View source for AEP-NRC-2016-40, Annual Radiological Environmental Operating Report for 2015

{{Adams
| number = ML16145A422
| issue date = 05/13/2016
| title = Annual Radiological Environmental Operating Report for 2015
| author name = Scarpello M
| author affiliation = AEP Indiana Michigan Power Co
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000315, 05000316
| license number = DPR-058, DPR-074
| contact person = 
| case reference number = AEP-NRC-2016-40
| document type = Environmental Monitoring Report, Letter type:AEP
| page count = 315
}}

=Text=
{{#Wiki_filter:m INDIANA                                                                            Indiana Michigan Power MICHIGAN                                                                            Cook Nuclear Plant PCWaR*                                                                               One Cook Place Bridgman, Ml 49106 A unit ofAmerican Electric Power                                                     lndianaMichiganPower.com May 13, 2016                                                                    AEP-NRC-2016-40 10 CFR 50 , Appendix I 10 CFR 50.36a(a)(2)
Docket Nos.: 50-315 50-316 U.S. Nuclear Regulatory Commission ATTN : Document Control Desk Washington , D.C. 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT In accordance with Technical Specification 5.6.2, Indiana Michigan Power Company, the licensee for Donald C. Cook Nuclear Plant Units 1 and 2, is providing the Annual Radiological Environmental Operating Report as an enclosure to this letter. This report covers the period of January 1, 2015, through December 31, 2015.
This letter contains no new regulatory commitments.         Should you have any questions, please contact me at (269) 466-2649.
Michael K. Scarpello Manager, Regulatory Affairs DB/mll

==Enclosure:==
Annual Radiological Environmental Operating Report c:        R. J. Ancona , MPSC A. W . Dietrich , NRC, Washington , D.C.
MDEQ - RMD/RPS NRC Resident Inspector C. D. Pederson, NRC , Region Ill A. J. Williamson , AEP Ft. Wayne , w/o enclosure

Enclosure to AEP-NRC-2016-40 Annual Radiological Environmental Operating Report

Annual Radiological Environmental Operating Report Indiana Michigan Power Company Donald C. Cook Nuclear Plant RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
/
January 1, 2015- December 31, 2015 Docket No. 50-315, 50-316 License No. DPR-58, DPR-74 AREVA Doc. 47-9254230-000 Donald c. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 TABLE OF CONTENTS 1.0    EXECUTIVE 

==SUMMARY==
 .................................................................... : ............................ 6

==2.0    INTRODUCTION==
 ......................................*............................................. :........................ ?
2.1    General Plant Site Information ...................... : ...................,. .................................. 7 2.2    Program De~igh ................................................................................................:... 7 2.3    Monitoring Zones ................................. ,............... :............................................... 8 2.4    Pathways Monitored .: .............................................................................. :............ 8 2.5    Descriptions of Monitoring Pathways ..................................................................... 8 2,5.1, Air .. .-.......................................................................................................... 9 2.5.2    Surfac;;e Water .......................................................................................... 9
             *2.5.3    Groundwater ............................................................ ~ ................................ 9 2.5.4    Drinking Water ......................................................................................... 9 2.5.5    Sediment. ............................................ :............................................... ;... 10.
2.5.6    Milk ........................ ,.,. ................ ,............................................................. 10 2.5~7    Fish ........................ :..*... ~*......................................................... .'...........*..... 10 2.5.8    Food Product. ...... ; .............................................................. ,.................... 10 2.5.9    Broadleaf Vegetation ....................................................-.... :..................... 10 2.5:10 TLD Monitoring ........................ :......................................................... ;..... 11 -
2.5.11 Additional Groundwater Sample Analysis (non-ODCM required) ............ 11 2.5.12 Additional Groundwater S~mple Analysis (NEI Groundwater Protection Initiative (GPI)) .................................................................................................... 11 2.6    Samples Analyzed During 2015 ..................................................................... '.._. .. 21 3.0    RADIOLOGICAL DATA 

==SUMMARY==
TABLES .................. ~ ................*............................. 22 4.0    ANALYSIS OF ENVIRONMENTAL RESULTS .............................................................. 51
     . 4.1    Sampling Program Deviations ............................................................................ 51 4.2    Comparison of Achieved LLD with Requirements .: ............................................ 52 4.3    Results Compare9 Agairist Reporting Levels ...................................................... 53 4.4    Data Analysis by Media Type - Discussion ........................... ; ........... :................53 4.4.1     Air Particulate .........................................................................................
                                                     .                                                    ~
53 4.4.2     Airborne lodine .................... :.................................................................. 56 Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 TABLE OF CONTENTS (Continued) 4.4.3    Groundwater (Well) ......................... :...................................................... 56 4.4.4    Drinking Water .................... *............. ,....................................................... 59 4.4.5    Surface Water ..............................*......................................................... 60 4.4.6     Sediment ................................................... ,:........................................... 60 1
4.4.7     Milk ................................ :................ :..................................... :..   ************** 61 4.4.8    Food Products & Vegetation .............. : ......................_.............................. 61 4.4.9     Fish ......................................................................................................:.. ,62 4.4.10 Gamma Exposure* Rate ............................................................................. 62 .
4.4.11 Additional Sample Analysis (non-ODCM required samples) ***************:***64 5.0    OFF-SITE DOSE EQUIVALENT COMMITMENTS .......... :....... : ..................................... 65.
6.0    

==SUMMARY==
OF REMP, ODCM, AND VENDOR PROCEDURE CHANGES .. : ................ 67

==7.0    REFERENCES==
 ...................... .'........ :............................................................................... 92 8.0    ERRATA* ........................... :........... :.................. ;............................................................. 92 APPENDIX A: SYNOPSIS OF ANALYSIS TECHNIQUES ..................................................... A-f APPENDIX B: 2015 LAND USE CENSUS ...................................................... :...... ,...... :........ B-1 APPENDIX C: QUALITYASSURANCE PROGRAM .............................................................. C-1 APPENDIX D: 2015 DATA 

==SUMMARY==
 .................................................................................. D-1.
APPENDIX E: PRE-OPERATIONAL RADIOLOGICAL MONITORING PROGRAM ............... E-1 APPENDIX F: NEI GROUNDWATER PROTECTION INITIATIVE ................ _: ......................... F-1 Donald C. Cook Nuclear Plant                               Annual Radiological Environmental Operating Report 2015 LIST OF TABLES Table 2.1 Sample Frequency & Type of Analysis Based on ODCM, Rev. 25, Attachment 3.19 and 12-THP-6010-RPP-636 Rev .. 5 .................................................................................... 12 Table 2.2 2015 Radiological Environmental Monitoring Program Sampling Types and Locations ......... ~ ................................................................................................................,....... 13 Table 2.3 Environmental Lower Limit of Detection (LLD) Sensitivity Requirements ODCM, Rev. 25, Attachment 3.20 .......................................................................................................... 16 Table 2.4 Reporting Levels for Radioactivity Concentrations in Environmental Samples
* ODCM Rev. 25, Attachment 3.21 .............................................................................................. 17 Table 2.5 REMP Samples Analyzed in 2015 ................... '.********:******************************** .............. 21 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January- December 2015) ...................................................................... 24 Table 3.2 2015 Environmental TLD Exposure Rate Measurements ........................................ 49 Table 3.3 2015 Environmental TLD Data Summary ................................................................ 50 Table 5.1      Cs-137 Concentrations in Fish Samples ........................................... : ...................... 65 Table 5.2 Cs-137 Concentrations in Broadleaf Samples ....................... ;................................. 66                                '-
Table 5.3 Summary of Off-Site Dose Commitments ................................................................. 66 Table 6.1 GEL Laboratories, LLC Updated Procedures for Support of Nuclear Power Plants Calendar Year 2015 ................................................................................................................... 84 Table C-1 2015 Inter- Laboratory Radiological Proficiency Testing Results and
* Acceptance Criteria ................................................................................................................, C-9 Table C-2 2015 Eckert & Ziegler Analytics Performance Evaluation Results ....................... C-23 Table C-3 REMP Intra-Laboratory Data Summary: Bias and Precision by Matrix ................ C-27 Table C-4 All Radiological Intra-Laboratory Data Summary: Bias and Precision by Matrix .. C-29 Table C-5 2015 Corrective Action Report Summary .................................................. : ......... C-36 Table C-6 Percentage ~f Individual Dosimeters That Passed EDC Internal Criteria January- December 2015 ..................................................................................................... C-41 Table C-7 Mean Dosimeter Analyses (N=6)                             January~         December 2015 ............................. C-42 Table C-8 Summary of Independent Blind Spike Dosimeter Testing January - December 2015 ... , ..... ,.......................................................................................................................... C-42 Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 LIST OF FIGURES Figure 2.1     Donald C. Cook Nuclear Plant Sampling Locations* - 1 Mile Radius ..................... 18 Figure 2.2 Donald C. Cook Nuclear Plant Sampling Locations - 10 Mile Radius .................... 19 Figure 2.3 Donald C. Cook Nuclear Plant Sampling Locations - 26 Mile Radius .................... 20 Figure 4.1 Mean Annual Gross Beta Concentration in Air Particulate Samples Collected over 10 Years ................ ,.......................................................................................................... 55 Figure 4.2 Mean Monthly Gross Beta Concentration in Air Particulate Samples Collected in 2015 ............................... :......................................................................................................... 56 Figure 4.3 Tritium Detected in Groundwater Over the Past 10 Years ...................................... 58 Figure 4.4 Tritium Detected in Groundwater Over the Past 10 Years ...................................... 58 Figure 4.5 Tritium Detected in Drinking Water Over the P~st 12 Years .......... :..................... , .. 60 Figure 4.6 Direct Radiation - Quarterly TLD Results ............................................................... 63 Figure 4.7 Direct Radiation, Annual Summary Ten Years Historical Trend ............................. 64 Donald C. Cook N'uclear Plant               Annual Radiological Environmental Operating Report 2015 1.0    EXECUTIVE 

==SUMMARY==

Implementation of the Donald C. Cook Nuclear Plant (CNP) Radiological Environmental Monitoring Program (REMP) continued during the period January through December 2015, in accordance with station Technical Specifications and the Off-Site Dose
* Calculation Manual (ODCM).
Radiochemical and radiometric analyses of REMP samples were performed to allow for detection and quantification of station-related radioactivity. A variety of potential exposure pathways were monitored by analyzing air, fruit, vegetation, water, fish, and sediment samples. Thermoluminescent dosimeters (TLDs) were also utilized to monitor for g~mma radiation exposure that might be attributed to plant activities.
Evaluation of sample analysis results considered the variability of natural or man-made radioactivity sources including their distribution and uptake in the environmental media.
This variability depends on several possible factors such as:
* contributions from cosn;ogenic radioactivity,
* groundwater dynamics,
* station related reJease rates,
* past spatial variability of radioactive fallout from nuclear weapons tests, other nuclear events (e.g. Fukushima, Chernobyl), and the on-going redistribution of this fallout,
       *       . soil characteristics,
* farming practice_s, and
* feed type .
Since these factors had the potential to cause considerable variation in sample analysis results; they were considered during the evaluation of sample analysis results.
Based on an evaluation of sample analysis results, it was determined that non-tritium radioactivity detected by the REMP was from outside sources, such as fallout from nuclear weapons tests, external nuclear events c;inc;f naturally-occurring radionuclides..
Examples include the following:
* All four of the lake sediment samples contained naturally-occurring K-40 and three samples contained Th-228. Two samples contained naturally-occurring Ac-228.           .     .                                                    .
* Naturally-occurring K-40 was detected in all eight REMP fish samples and trace levels of Cs-137 were observed in the three indicator and two control stations.
Both non-REMP fish samples detected naturally occurring K-40 and one non-REMP fish sample detected trace levels of Cs-137.
* Both indicator and control . food products samples (grapes) contained
              . naturally-occurring K-40 and Be-7. All samples of broadleaf vegetation contained naturally-occurring K-40 and Be-7. dne indicator sample contained naturally Donald C. Cook Nuclear Plant                Annual Radiological Environmental Operating Report 2015 occurring Th-228. Additionally, three of twenty-four indicator samples contained low levels of Cs-137.
* Three of 138 water samples (drinking, ground, and surface) indicated the presence of naturally-occurring K-40. Three samples also detected the presence of Th-228. Tritium was riot detected in any of the 82 water samples.
* The quarterly composite of the air particulate samples all contained naturally-occurririg Be-7. One control sample contained K-40, and one indicator sample contained Th-228.
No sample analysis results exceeded or approached specified reporting levels.
This report was prepared for Indiana Michigan Power Company by AREVA Inc. Sample collection and preparation was performed by CNP. Laboratory analyses were performed by GEL Laboratories, LLC (GEL). TLD *analyses were performed by Environmental Dosimetry Company.

==2.0     INTRODUCTION==
* 2.1     General Plant Site Information Indiana Michigan Power Company's CNP is located on the southeastern shore of Lake Michigan* approximately one mile north of Bridgman, Michigan. The site consists of two pressurized water reactors: Unit 1, 1084 MWe (Net Design Electrical Rating) and Unit 2, 1107 MWe (Net Design Electrical Rating). Unit 1 achieved initial criticality on January 18, 1975, and Unit 2 on March 10, 1978.
The Independent Spent Fuel Storage Installation (ISFSI) impacts are included with Unit 1 and Unit 2 statistics. The ISFSI cask system does not create any radioactive materials or have any radioactive waste treatment systems.
Therefore, specific operating procedures for the control of radioactive effluents are not required. Certificate of Compliance No. 1014 Appendix A, Specification 3.1. 1, Multi-Purpose Canister, provides assurance that there are no radioactive effluents from the ISFSI.
2.2      Program Design The REMP for CNP was designed with specific objectives:
To provide an early indication of the appearance or accumulation of radioactive material in the environment possibly caused by CNP activities.
To provide assurance to regulatory agencies and the public that the environmental/dose impact of the CNP operation is known and within anticipated limits.
                        -To verify the adequacy and proper functioning of station effluent controls and monitoring systems.
To comply with regulatory requirements and station Technical Specifications and provide records to document compliance.
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Radioactivity in the Environs of Nuclear Power Plants"; NRC Regulatory Guide 4.8, "Environmental Technical Specifications for Nuclear Power Plants"; the NRC Branch Technical Position of November 1979, "An Acceptable Radiological Environmental Monitoring Program"; and NRC NUREG-0472, "Standard Radiological Effluent Technical Specifications for Pressurized Water Reactors."
The REMP sampling requirements are given in Attachment 3.19, "Radiological Environmental Monitoring Program Sample Stations, Sample Types, Sample Frequencies," of the ODCM and summarized in Table 2.1 of this report. The identification of the required* sampling locations is also provided in Attachment 3.19 of the ODCM and Table 2.2 of this report. The monitoring locations are shown graphically in Figures 2.1 - 2.3.
2.3    Monitoring Zones The REMP is designed to allow comparison of levels of radioactivity in samples from the area potentially influenced by the plant to levels found in areas not influenced by the plant.       Generally, monitoring zones are designated as "indicator" or "control" locations. For a particular* pathway, the distinction between these designations is based on relative direction and distance from the plant. Sample analysis data from the two zones is evaluated and used to differentiate between radiation due to plant activities and that due to other sources (examples: nuclear weapons test fallout, external nuclear events, medical related tests and seasonal background variations).
2.4    Pathways Monitored Four pathway categories (airborne, waterborne, ingestion, and direct radiation) were monitored by the REMP. Each *of these. categories was monitored by the collection of one or more sample types listed and described below.
Airborne Pathway:              Air Waterborne Pathway:            Surface Water Groundwater Drinking Water Sediment Ingestion Pathway:             Milk (if available)
Fish Food Product (Fruit and Broadleaf Vegetation)
Broadleaf Vegetation (in lieu of Milk !:Ind garden census)
Direct Radiation:              TLD Monitoring 2.5     Descriptions of Monitoring Pathways S~mple types and frequency of analysis are given in Table 2.1. The sample
            . locations are listed in Table 2.2 and shown in Figures 2.1 - 2.3. The program as described in this* report includes both ODCM required and additional or supplemental samples. A description of the ODCM sampling program follows, Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 and a detailed summary of the analytical methodologies employed by GEL Laboratories is provided in Appendix A.
2.5.1   Air Air samplers were installed at ten locations as required* by the ODCM.
These samplers operated continuously (except during weekly sample media replacement) within the specified sample flow rate range of 42 to 70 liters per minute (LPM). An Automatic Volume Totalizer was used to measure the total volume of air sampled, total unit run time and volumetric flow rate.
Airborne particulates were collected by passing air through a 47-mm particulate filter. Charcoal cartridges were installed downstream of the particulate filters and Were used to collect airbo*rne radioiodine. Both types of sample media were collected weekly, arid to allow for the decay of radon daughter products, the particulate filters were held at least 100 hours before being analyzed for gross-beta radioactivity.
The pa.rticulate filters were composited by location as part of the quarterly gamma spectroscopy analysis.
2.5.2 . Surface*water
                    *Two 500-ml surface water samples were collected from shoreline locations approximately 500 feet. north and south of the plant centerline.
Samples. were composited daily, and the gamma aliquot*was preserved with nitric acid. A gamma .isotopic analysis was performed on a monthly composite from each sample point. A tritium analysis was performed on a quarterly comp.osite from each sample point.
* 2.5.3    Groundwater i
                     .Groundwater samples were collected quarterly from 1 wells, all within 4300 feet of the reactors. At each well, a static water elevation was determined and at least three well bore volumes were purged from the
                  '  well using a groundwater pump or equivalent. Two 1-liter and two 125-ml samples were then collected and* *the gamma isotopic *aliquot was preserved with nitric acid. Gamma isotopic and tritium analyses were perfor~ed.              *
* 2.5.4    Drinking Water One-liter samples were collected daily at* the intake of the water.
purification plants for St. Joseph and Lake Township. The daily samples were composited over 14 days and the gamma isotopic/gross beta aliquot was preserved with nitric acid. The 14-day composite samples were*
analyzed for' gross beta, gamma isotopic and low level Iodine (1-131). A quarterly composite was analyzed for Tritium (H-3).         -
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating,Report 2015 2.5.5   Sediment Lake Michigan shoreline sediment samples were collected semi-annually approximately 500 feet north and south of the plant centerline. A one-liter sample was collected from an area covered part time by wave action at each location. The sediment samples were analyzed for gamma isotopic content.
2.5.6   Milk Due to the retirement of several milk farms, the required number of indicator milk locations was not met in 2015. The milk sampling program has been considered suspended since 2010. Environmental personnel implemented broadleaf vegetation collection per the ODCM during the growing season as* a result of not meeting the required number of milk indicator farms.*
2.5.7   Fish
                    . Approximately four pounds of fish were collected twice this year from four locations using gill nets in Lake Michigan. The edible portions of the fish were analyzed for gamma-emitting radionuclides.
In addition to the ODCM required bi-annual fish samples, a once-a-year sampling for fish species important to sport fishing in Lake Michigan (trout, salmon, and perch) was initiated in 2011 and continued through 2015. The same analysis is performed for the sport fish samples as that performed for the original REMP fish samples.
2.5.8    Food Product Two food product samples (grapes) were collected annually at. the time of harvest. Samples consist of greater than 300 grams of media and were collected from the highest deposition factor land sectors near CNP, with media present, .and at an approximate distance of 20 miles from the plant in one of the less prevalent deposition factor land sectors. Samples were analyzed for gamma-emitting radionuclides.
2.5.9    Broadleaf Vegetation Broadleaf vegetation sampling in lieu of milk collection was reinstated on December 16, 2004, and continued through 2015 during the growing season (June - October, when available). Three samples *consisting of greater than 300 grams of media were_ collected from two different locations within 8 miles of the plant in the highest deposition factor land sectors with media present, and one sample at an approximate distance of 20 miles from the plant in one of the less prevalent deposition factor land sectors. Samples were analyzed for gamma-emitting radionuclides and low level 1-131'.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 2.5.10 TLD Monitoring Direct gamma radiation exposure was continuously monitored with the use of Panasonic UD-814 AS4 TLDs. TLDs were posted at 27 locations in the environs surrounding CNP and replaced quarterly.
2.5.11 Additional Groundwater Sample Analysis (non-ODCM required)
During 2015, additional groundwater samples not required by the OOCM were collected for informational purposes. These samples were collected at several onsite locations in 2015 and analyzed for gamma, tritium, gross beta and gross alpha, by GEL laboratories.
2.5.12 Additional Groundwater Sample Analysis (NEI Groundwater Protection Initiative (GPI))
During 2015, additional groundwater samples not required by the ODCM were collected for informational purposes. These samples were collected at several onsite locations in 2015 and analyzed for tritium by CNP.
The full discussion of the GPI sample data and analysis is contained in Appendix F.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 2.1 Sampling Frequency & Type of Analysis Based on ODCM, Rev. 25, Attachment 3.19 and 12-THP-6010-RPP-636 Rev. 5 Sampling &
Exposure Pathway Number of Collection              Type of Analysis and/or Sample      Locations Frequency Gamma Exposure-
: 1.                           27            Quarterly     Direct Radiation - Quarterly Environmental TLD Continuous     Gross Beta and 1-131 - Weekly
: 2. Airborne                  10       sampler - weekly   Gamma Isotopic - Quarterly on filter change   composite (by location)
Groundwater                                           Gamma Isotopic and Tritium -
: 3.                           17            Quarterly (Well Water)                                          Quarterly Gamma Isotopic - Monthly on Once per calendar
: 4. Surface Water              2                          composite day Tritium *_ Quarterly on composite Gamma Isotopic, Gross Beta Once per calendar   and 1-131 Low Level (LL) - on
: 5. Drinking Water             2 day        14 day composite. Tritium -:-
Quarterly on composite Sediment
: 6.                             2        Semiannually      Gamma Isotopic Lake Once every 15 Milk                              days or Monthly if  Gamma Isotopic.and 1-131 Low
: 7.                            4.
(if available)                     animals are fed    Level (LL) :-- per sample stored feed.
: 8. Fish (edible portion)     4            2 per year     Gamma Isotopic - per sample
: 9. Fish (edible portion)      2           1 per year     Gamma Isotopic - per sample Food Products-
: 10.                            2      At time of harvest  Gamma Isotopic - per sample Grape Broad leaf Monthly when      Gamma Isotopic and 1-131 Low
: 11. Vegetation - (in lieu      3 available     Level (LL) - per sample of milk sampling)
Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Table 2.2 2015 Radiological Environmental Monitoring Program Sampling Types and Locations Exposure Pathway Sample       Indicator/
(Sample Type                                              Location Description Station       Control Designation)
Airborne
: a. Filter (AP I CF)     ONS-1                 I       1945 feet @ 18&deg; from Plant axis ONS-2                 I       2338 feet @ 48&deg; from Plant axis ONS-3                 I       2407 feet @ 90&deg; from Plant axis ONS-4                 I       1852 feet @ 118&deg; from Plant axis ONS-5                 I       1895 feet @ 189&deg; from Plant axis ONS-6                 I       1917 feet @ 210&deg; from Plant axis NBF                  c        15.6 miles SSW - New Buffalo, Ml SBN                  c        26.2 miles SE - South Bend, IN DOW                  c        24.3 miles ENE - Dowagiac, Ml COL                  c        18.9 miles NNE - Coloma, Ml Waterborne
: a. Ground Well (WG)     W-1                           1969 feet @ 11&deg; from Plant axis W-2                           2302 feet @ 63&deg; from Plant axis W-3                           3279 feet @ 107&deg; from Plant axis W-4                           418 feet @ 301&deg; from Plant axis W-5                           404 feet@ 290&deg; from Plant axis W-6                           424 feet @ 273&deg; from Plant axis W-7                           1895 feet @ 189&deg; from Plant axis W-8                           1274 feet @ 54&deg; from Plant axis W-9                           1447 feet@ 22&deg; from Plant axis W-10                          4216 feet @ 129&deg; from Plant axis W-11                          3206 feet @ 153&deg; from Plant axis W-12                          2631 feet@ 162&deg; from Plant axis W-13                          2152 feet @ 182&deg; from Plant axis W-14                          1780 feet @ 164&deg; from Plant axis W-15                          725 feet @ 202 &deg; from Plant axis (MW-12c)
W-16                  I       2200 feet @ 208 &deg; from Plant axis (MW-20)
W-17                  I       2200 feet @ 180 &deg; from Plant axis (MW-21)
: b. Drinking (WD)        STJ                  c        9 miles NE - St. Joseph Public Intake Station LTW                   I       0.6 mile S - Lake Twp. Public Intake Station Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Exposure Pathway Sample         Indicator/
(Sample.Type                                                   Location Description Station         Control Designation)
: c. Surface (V'.JS)         SWL-2                           500 feet S of Plant Centerline - Site I
Boundary SWL-3                     I      500 feet N of Plant Centerline - Site Boundary
: d. Sediment (SE)          SL-2                             500 feet S of Plant Centerline - Site I
Boundary SL-3                     I       500 feet N of Plant Centerline*- Site Boundary Ingestion
: a. Milk (TM)              None                     I       None available None                     I       None available None                     I       None available None                     c       None available
: b. Fish (FH)              ONS-N                    I       0.3 mile N, Lake Michigan ONS-S                    I       0.4 mile S, Lake Michigan Trout and salmon within 20 miles of TRT/SLM*                 I CNP, Lake Michigan Perch within 10 miles of CNP, Lake PRCH*                    I Michigan OFS-N                    c       3.5 miles N, Lake MichiQan OFS-S                    c       5.0 miles S, Lake MichiQan
: c. Food Products          ONS-G                    I       Nearest sample to Plant in the (TF) **                                                highest D/Q land sector containing grapes.
OFS-G                    c       In a land sector containing grapes,
                                                            -20 miles from the Plant, *in one of the less prevalent D/Q land Sectors
: d. Vegetation (TV)        ONS1-V                  -I       3 samples of different kinds of
[broadleaf vegetation     ONS2-V                   I       broadleaf vegetation collected at the taken in lieu of milk                                      site boundary, within 5 mi. of the plant or garden census ]                                        in each of two different sectors with ONS3-V                   I
 **                                                         the highest annual average D/Q containing media.
OFS1-V                  c        1 Background sample of similar OFS2-V                  c        vegetation grown 10-20 miles distant in one of the less prevalent wind directions.
* Samples not listed in ODCM Attachment 3.19
         ** See Figures 2.1, 2.2, and 2.3 for exact locations for 2015 Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 2.2 2015 Radiological Environmental Monitoring Program Sampling Types and Locations (Continued)
Exposure Pathway Sample (Sample Type                        Location Description Station Designation)
Direct Radiation
: a. TLD          T-1       1945 feet @ 18&deg; from Plant axis T-2      2338 feet @ 48&deg; from Plant axis T-3      2407 feet @ 90&deg; from Plant axis T-4       1852 feet @ 118&deg; from Plant axis T-5       1895 feet @ 189&deg; from Plant axis T-6       1917 feet @210&deg; from Plant axis T-7      2103 feet@ 36&deg; from Plant axis T-8      2208 feet @ 82&deg; from Plant axis T-9       1368 feet @ 149&deg; from Plant axis T-10      1390 feet@ 127&deg; from Plant axis T-11      1969 feet @ 11&deg; from Plant axis T-12     2292 feet @ 63&deg; from Plant axis NBF       15.6 miles SSW - New Buffalo, Ml SBN      26.2 miles SE - South Bend, IN DOW      24.3 miles ENE - Dowagiac, Ml COL       18.9 miles NNE - Coloma, Ml OFT-1    4.5 miles NE - Pole #B294-44 OFT-2    3.6 miles NE - Stevensville Substation OFT-3     5.1 miles NE - Pole #B296-13 OFT-4    4.1 miles E - Pole #B350-72 OFT-5    4.2 miles ESE - Pole #B387-32 OFT-6    4.9 miles SE - Pole #B426-1 OFT-7    2.5 miles S - Bridgman Substation OFT-8    4.0 miles S - Pole #B424-20 OFT-9    4.4 miles ESE - Pole #B369-214 OFT-10   3.8 miles S - Pole #B422-99 OFT-11   3.8 miles S - Pole #B423-12 Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 2.3 Environmental Lower Limit of Detection (LLD) Sensitivity Requirements ODCM, Rev. 25, Attachment 3.20 Food Prod.      Water                                  Fish        Sediment Milk      Air Filter Analysis      (pCi/kg,      (pCi/L)                              (pCi/kg,       (pCi/kg, (pCi/L)     (pCi/m 3 )
wet)                                               wet)           dry)
Gross Beta                     4                      0.01 H-3                       2000 Mn-54                       15                                   130 Co-58                       15                                   130 Co-60                       15                                   130 Fe-59                       30                                   260 Zn-65                       30                                   260 Zr-95                       30 Nb-95                       15 1-131          60            1           1          0.07 Cs-134          60           15          15          0.06         130            150 Cs-137          60           18          18          0.06         150            180 Ba-140                       60          60 La-140                       15          15 Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Table 2.4 Reporting Levels for Radioactivity Concentrations in Environmental Samples ODCM Rev. 25, Attachment 3.21 Food Prod.      Water                         Airborne          Fish Milk Analysis        (pCi/kg,       (pCi/L)                          Filter       (pCi/kg, (pCi/L) wet)                                        (pCi/m 3 )       wet)
H-3                          20000 Mn-54                          1000                                         30000 Co-58                          1000                                         30000 Co-60                          300                                          10000 Fe-59                          400                                          10000 Zn-65                          300                                          20000 Zr-95                          400 Nb-95                          400 1-131            100.            2               3            0.90 Cs-134           1000            30              60             10            1000 Cs-137           2000            50              70             20            2000 Ba-140                          200             300 La-140                          200             300 Donald C. Cook Nuclear Plant                Annual Radiological Environmental Operating Report 2015 Figure 2.1 Donald C. Cook Nuclear Plant Sampling Locations - 1 Mile Radius (See Table 2.2 for information on sampling locations) 1 mile er Plant (DCCNPP)
    +
E9
* Broadleaf
                                                                           -10
                                                                        + "'\ *"'' . ~
             '"LTWINTAKE 0                                                         1 Mile Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Figure 2.2 Donald C. Cook Nuclear Plant Sampling Locations -10 Mile Radius (See Table 2.2 for information on sampling locations) 1/ -* ..*
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Donald C. Cook Nuclear Plant                                        Annual Radiological Environmental Operating Report 2015 Figure 2.3 Donald C. Cook Nuclear Plant Sampling Locations - 26 Mile Radius (See Table 2.2 for information on sampling locations)
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    -                                                                                             20                   ' 25 Miles Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report'2015 2.6     Samples Analyzed During 2015 Table 2.5 below summarizes the number of samples of each type analyzed during the 2015 reporting period and the number of analyses by station type for each media. A more detailed breakdown of the various analyses performed is provided in the data summary tables in Section 3, Table 3.1.
Table 2.5 REMP Samples Analyzed in 2015 Number of REMP Samples Sample Type Total                 Indicator         Control Gamma Exposure 108                      92                16 Environmental TLD Air Particulate            52'0                    312    -          208 Charcoal Filter            520                     312               208 Groundwater                68                      68                 0 Surface Water                18                     18                 0 Drinking Water              52                     26                 26 Sediment (Lake)               4                      4                  0 Food Products 2                       1                 1 (grapes)
Vegetation 28                     24                 4 (broad leaf)
Milk*                   0                      0                  0 Fish                   8                      4                 4 Total All Types            1,328                   861               467
* No milk sampling locations were available.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 3.0    RADIOLOGICAL DATA 

==SUMMARY==
TABLES This section summarizes the analytical results of the environmental samples that were collected during 2015. These results, shown in Table 3.1, are presented in a format similar to that prescribed in the NRC's Radiological Assessment Branch Technical Position on Environmental Monitoring (Reference 1). The results are ordered by sample media type and then by- radionuclide for the monitoring zones described in Section 2.3. The units for each media type are also given. A summary of the data from TLD' direct radiation measurements is provided in Table 3.2. The complete listing of quarterly TLD data is provided in Table 3.3.
The left-most column of Table 3.1 contains the radionuclide of interest, the total number of analyses for that radionuclide in 2015, and the number of measurements that exceeded the Reporting Levels found in Table 2.4. The latter are classified as "Non-routine" measurements. The second column lists the required Lower Limit of Detection (LLD) for those radionuclides that have detection\capability requirements specifie6 in Table 2.3 ..
The absence of a value in this column indicates that no LLD is specified in the ODCM for that ra<;lionuclide in that media.
For each media type and radionuclide, the remaining three columns summarize the data for the following categories of monitoring locations: (1) the Indicator stations, which were.
within the range of influence of the plant and which could be affected by plant activities; (2) the station which had the highest m~an concentration during 2015, and (3) the Control stations, which were beyond the influence of the plant. Direct radiation monitoring stations (using TLDs) were grouped into onsite and offsite stations. These are shown in Table 3.2.
      -In each of these columns, for each radionudide, the following are given:
* The n;iean value of all concentrations including negative values and values that were not considered "detectable",
* The lowest and highest concentration.
* The number of detectable measurements divided by the total number of measurements.
A sample was considered a "detectable measurement" when the concentration exceeded its associated minimum detectable concentration (MDC). The standard deviation on each m'easurenient represents only the random.* uncertainty associated with the radioactive decay process (counting statistics), and not the propagation of all possible uncertainties in the analytical procedure.
The radionuclides reported in this section represent those that: (1) had an LLD requirement in Attachment 3.20 or a' Reporting Level listed in Attachment 3.21 of the ODCM, (2) had a positive measurement of radioactivity, whether it was naturally-occurring or man-made, or (3) were of specific* interest for any other reason. The radionuclides that were routinely analyzed and reported by GEL Laboratory in a gamma spectroscopy analysis were Ac-228, Th-228, Ag-108m, Ag-110m, Ba-140; La-140, Be-7, Ce-141, Ce-144, Co-57, Co-58, Co-60, Cr-51, Cs-134, Cs-1&deg;37,
* Fe-59 1 1-131, K-40, Mn-54, Ru-103, Ru-106, Sb-124, Sb-125, Se-75, Zn-65, Zr-95 and Nb-95.
GEL Laboratories has been analyzing CNP's environmental samples since June 2010, when the AREVA Environmental Laboratory (ELAB) discontinued operations. During this Donald C. Cook Nuclear Plant
* Annual Radiological Environmental Operating Report 2015 transitional period there were slight differences in how the labs treated the measurement data. The main differences were the treatment of the Th-232 decay series, the Ba-140 decay series, and the Zr-95 decay series. Where the AREVA ELAB used one daughter radionuclide to infer the decay series, GEL Labs measures each of the radionuclides independently. Both analysis methods meet or exceed the reporting requirements, as detailed in the ODCM. One other important difference between the laboratories' analysis methods is the determination of a statistically significant positive concentration. The AREVA ELAB had historically flagged concentrations above three times the uncertainty in*
the measurement, or 3cr. GEL Labs maintains a check on concentrations above the MDC.
Donald C. Cook Nuclear Plant                       Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Air Particulates (AP)               UNITS: pCi/cubic meter Indicator Stations                        Station With Highest Mean           Control Stations Radionuclides              Mean***                        Station           Mean***                      Mean***
(No. Analyses)    Required Range                                            Range                        Range Non-Routine*        LLD    No. Detected**                                   No. Detected**               No. Detected**
BETA        (520)  0.01          2. 9E -2                 ONS*5                  2.9E -2                       2.8E -2 (0)                  1.2 - 6.l)E -2                                  1.2 - 5.8)E -2                1.2 - 6.l)E -2 (312/ 3'12)                                       (52/ 52)                    (208/ 208)
Be-7       (40)                  1.2E -1                  NBF                    1. 2E -1                      1. lE -1 (0)                   8.2 - 14.l)E -2                                 9.9 - 15.0)E -2               8.4 - 15.0)E -2 (24/ 24)                                        . (4/ 4)                      (16/ 16)
K-40       (40)                  1. 3E -3                 NBF                    2.2E -3                       1. 6E -3 (0)                 -1.7 - 4.2)E -3                                 -2.1 - 60.2)E -4              -3.0 - 6.0)E -3 (0/ 24)                                          (1/ 4)                       (1/ 16)
Cr-51      (40)                  1.2E -3                  ONS-5                  5.7E -3                     -3.6E -4 (0)                 -3.5 - 3.8)E -2                                 -1.4 - 3.8)E -2               -2.4 - 1.9)E -2 (0/ 24)                                          (0/ 4)                       (0/ 16)
Mn-54      (40)                -3.8E -5                   NBF                    1.0E -4                     -3.3E -5 (0)                 -1.9 - 1.S)E -4                                 -4.9 - 22.l)E -5              -7.0 - 2.2)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Co-57      (40)                 1. SE -5                  ONS-2                  1.lE -4                       O.OE 0 (0)                 -1.1 - 2.3)E -4                                   2.6 - 17.l)E -5             -1.8 - 1.S)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Co-58      (40)                -1. 6E -5                  ONS-4                  3.6E -4                     -9.4E -5 (0)                 -8.0 - 5.6)E -4                                   2.8 - 561.0)E -6            -5.1 - 5.2)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Fe-59      (40)                -2.7E -4                   ONS*1                  6.0E -4                     -2.6E -4 (0)                 -1.5 - 1.4)E -3                                   8.3 - 143.0)E -5            -3.4 - 2.S)E -3 (0/ 24)                                          (0/ 4)                       (0/ 16)
Co-60      (40)                 1. OE -5                  COL                    9.9E -5                       O.OE 0
(~)                 -2.1 - 3.S)E -4                                   2.8 - 236.0)E -6            -3.0 - 2.4)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Zn-65      (40)                  O.OE 0                   ONS-2                  2.lE -4                     -2.6E -4 (0)                 -4.9 - 5.8)E -4                                 -4.7 - 58.0)E -5              -1.3 - 0.7)E -3 (0/ 24)                                          (0/ 4)                       (0/ 16)
Se-75      (40)                 2.7E -5                   ONS-6                  l.SE -4                     -1.lE -4 (0)                 -3.2 - 3.S)E -4                                 -9.3 - 35.0)E -5              -6.3 - 2.2)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Nb-95      (40)                 1.4E -4                   ONS*5                  2.6E -4                     -1. 6E -4 (0)                 -4.4 - 5.S)E -4                                 -1.5 - 5.2)E -4               -1.2 - 0.8)E -3 (0/ 24)                                          (0/ 4)                       (0/ 16)
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Air Particulates (AP)                 UNITS: pCi/cubic meter Indicator Stations                         Station With Highest Mean             Control Stations Radionuclides            Mean***                         Station            Mean***                       Mean***
(No. Analyses)  Required Range                                              Range                         Range Non-Routine*      LLD    No. Detected**                                     No. Detected**                No. Detected**
Zr-95      (40)                1.3E -4                   NBF                     9.1E -4                        4.2E -4 (0)               -1.2 - 1.8)E -3                                     1. 9 - 17.7)E -4             -6.8 - 17.7)E -4 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ru-103     (40)                9.2E -5                  *DOW                     8.7E -4                        2.9E -4 (0)               -9.5 - 16.0)E -4                                  -1.4 - 21. 4)E -4              -1.5 - 2.1)E -3 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ru-106     (40)              -8.6E -5                    ONS*6                   5.4E -4                      -3.0E -4 (0)               -3.0 - 2.0)E -3                                   -2.6 - 12.4)E -4               -4.0 - 1.5)E -3 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ag-108m    (40)                1. 7E -5                  ONS*~                   9.8E -5                      -1.8E -5 (0)               -1.3 - 2.2)E -4                                   -4.1 - 19.7)E -5               -1.4 - 1.1)E -4 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ag-110m    (40)              -3.5E -5                    DOW                     1.0E -4                      -3.4E -5 (0)               -4.2 - 3.8)E -4                                   -2.2 - 3.1)E -4                -4.8 - 3.1)E -4 (0/ 24)                                            (0/ 4)                        (0/ 16)
Sb-124     (40)                9.8E -5                   ONS-4                   2.1E -4                      -4.6E -5 (0)               -1.3 - 2.2)E -3                                   -4.0 - 8.7)E -4                -1.5 - 1.6)E -3 (0/ 24)                                            (0/ 4)                        (0/ 16)
Sb-125     (40)               1.5E -5                    SBN                     1.9E -4                      -3.4E -5 (0)            (. -3.9 - 3.7)E -4                                   -1.1 - 7.0)E -4                -7.6 - 7.0)E -4 (0/ 24)                                             (0/ 4)                        (0/ 16) 1-131      (40)               1.3E 0                     ONS*6                   1. 6E 1                        8.7E -1 (0)               -3.1 - 6.2)E 1                                    -8.3 - 6200,0)E -2             -2.9 - 4.6)E 1 (0/ 24)                                            (0/ 4)                        (0/ 16)
Cs-134     (40)  0.06          O.OE 0                    SBN                     1. 7E -4                       8.7E -5 (0)               -.4.2 - 2.8)E -4                                  -2.6 - 50.5)E -5               -2.4 - 5.1)E -4 (0/ 24)                                             (0/ 4)                        (0/ 16)
Cs-137     (40)  0.06          O.OE 0                    ONS-1                   6.4E -5                        2.7E -5 (0)               -1. 9 - 2.7)E -4                                  -1.3 - 2.7)E -4                -1.4 - 2.3)E -4 (0/ 24)                                             (0/ 4)                       (0/ 16)
Ba-140     (40)                6.4E -2                   ONS-4                   3.2E -1                      -3.7E -1 (0)               -1.1 - 1.2)E 0                                      3.6 - 1190.0)E -3            -2.7 - 0.2)E 0 (0/ 24)                                             (0/ 4)                        (0/ 16)
La-140     (40)              -9.4E -3                    ONS*5                   1.5E -1                      -3.8E -2 (0)               -7.9 - 6.1)E -1                                   -1.0 - 60.5)E -2               -4.2 - 1.4)E -1 (0/ 24)                                             (0/ 4)                       (0/ 16)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Air Particulates !AP}                UNITS: pCi/cubic meter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides                    Mean***                        Station            Mean***                       Mean****
(No. Analyses)       Required    Range                                             Range                         Range Non-Routine*            LLD      No. Detected**                                    No. Detected**                No. Detected**
Ce-141       (40)                      4.7E -4                  ONS-6                   1.4E -3                      5.6E -4 (0)                     -2.5 - 3.5)E -3                                  -3.9 - 291. O)E -5           -1.2 - 4.l)E -3 (0/ 24)                                           (0/ 4)                    (0/ 16)
Ce-144       (40)                    -1.4E -4                   ONS-1                   5.4E -4                      6.7E -5 (0)                     -1.3 - 1.0)E -3                                  -2.6 - 10.2)E -4             -1. 6 - 1.5)E -3 (0/ 24)                                           (0/ 4)                    (0/ 16)
Ac-228       (40)                      2.4E -4                  ONS-2                   5.2E -4                    -1.0E ~4 (0)                     -1.1 - 1.3)E -3                                    3.4 - 8.2)E -4             -9.2 - 7.4)E -4 (0/ 24)                                           (0/ 4)                    (0/ 16)
Th-228       (40)                      l.lE -4                  SBN                     3.lE -4                      1. 6E -4 (0)                     -4.4 - 4.4)E -4                                  -8.4 - 47.7)E -5             -3.0 - 4.8)E -4 (1/ 24)                                           (0/ 4)                    (0/ 16)
*Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e.,,> MDC) is shown in parentheses.
***Mean value is set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                         Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Charcoal Cartridge (CF)               UNITS: pCi/cubic meter Indicator Stations                    Station With Highest Mean               Control Stations
                                                               ------------------7--.. ------------------~-------
, Radionuclides                     Mean***                    Station            Mean***                         Mean***
(No. Analyses)        Required    Range                                         Range                           Range Non-Routine*            LLD       No. Dete*cted**                               No. Detected**                  No. Detected**
1-131       (520)      0.07          -5.4E -5                ONS-6                     9.0E -4                      2.0E -5 (0)                      -1.7 - 1.7)E -2                                 -1.1 - 1. 7)E -2              -1.5 - 2.l)E -2
                                                 <91  312)                                           (ci/ 52)                  (0/ 208)
* Non-Routine refers to radionuclides exceeding th(l Reporting Levels in ODCM Attachment 3.21 of the ODCM        '
  **The fraction of sample analysis yielding detectable measurement$ (i.e., > MDC) is shown* in parentheses.
  *** Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Fish (FHl          UNITS: pCi/kg Indicator Stations                       Station With Highest Mean          Control Stations Radionuclides            Mean***                        Station           Mean***                    Mean***
{No. Analyses)  Required Range                                           Range                       Range Non-Routine*      LLD    No. Detected**                                   No. Detected**             No. Detected**
Be-7        (8)                 2.3E -1                 ONS-S                 1.3E 1                       8.4E 0 (0)           ( -1.5 - 1.5)E 1                                (   1.1 - 1.5)E 1           (    2.2 - 21.0)E        o*
(0/ 4)                                            (0/ 2)                    (0/ 4)
K-40        (8)                 3.2E 3                  ONS*N                 3.4E 3                       2.9E 3 (0)           (     2.9 - 3.6)E 3                             (   3.1 - 3.6)E 3           (    2.7 - 3.0)E 3 (4/ 4)                                             (2/ 2)                    (4/ 4)
Cr-51       (8)               -2.5E 0                   OFS*N                 8.4E 0                       6.5E 0 (0)            ( -1.4 - 1.l)E 1                                ( ~2.7      - 19.6}E 0      ( -2.7 - 19.6)E 0 (0/ 4)                                             (0/ 2)                    (0/ 4)
Mn-54      (8)   130            4.2E -1                 ONS*S                 8.3E -1                    -7.0E -1 (0)            ( -5.3 - l4.3)E -1                              (   2.2 - 14.3)E -1         ( -1.6 - O.l)E 0 (0/ 4)                                            (0/ 2)                    (0/ 4)
Co-57      (8)                  1.9E -1                 OFS*N                 5.4E -1                      4.8E -1 (0)            ( -:-1.2 - 1.6)E 0                              ( -2.2 - 12.9)E -1          ( -2.2 - 12.g)E -1 (0/ 4)                                             (0/ 2)                   (0/ 4)
Co-58      (8)   130          --6.4E -1                 OFS*N                 1.6E 0                       6.3E -1 (0)            ( -2.2 - 0.6)E 0                                (   8.6 - 22.6)E -1         ( -9.9 - 22.6)E -1 (0/ 4)                                             (0/ 2)                    (0/ 4)
* Fe-59      (8)   260     --.._ 1.2E 0                   ONS*S                 3.6E 0                     -6.8E -1 (0)            ( -6.0 - 6.5)E 0                                (   7.2*- 65.0)E -1         ( -4.1 - 1.8)E 0 (0/ 4)                                             (0/ 2)                   (0/ 4)
Co-60      (8)   130          -6.lE -1                  OFS-S                 2.0E 0                       1.2E 0 (0)            ( -1.7 - 1.1)E 0                                (   9.5.- 30.?)E -1         ( -1.2 - 3.1)E 0 (0/ 4)                                             (0/ 2)                   (0/ 4)
Zn-65      (8)   260          -2.0E 0                   ONS-S               -4.6E -1                     -3.3E 0 (0)            ( -5.7 - 0.8)~ 0                                ( -1.7 - 0.8)E 0            ( -8.1 - 0.5)E 0 (0/ 4)                                             (0/ 2)                   (0/ 4)
Se-75      (8)                -7.0E -1                  OFS-S                 3.3E -1                      2.7E -1 (0)            ( -1.4 - 0.3)E 0                               ( -5.1 - 11.?)E -1           ( -5.7 - 11.7)K          -i (0/ 4)                                             (0/ 2)                   (0/ 4)
Nb-95      (8)                  4.8E -1                 ONS-N                 l.8E 0                      1. 6E -0 (0)            ( -2.2 - 1.9)E 0                                (   1.7 - 1.9)E 0           (    9.1 - 24.2)E -1 (0/ 4)                                             (0/ 2)                   (0/ 4)
Zr-95      (8)                -7 .5E -2*                OFS-S                 3.2E 0                      2.lE 0 (0)            ( -1.5 - 0.9)E 0                               (    2.0 - 4.5)E 0           (    4.3 - 44.9)E -1 (0/ 4)                                             (0/ 2)                   (0/ 4)
. Donald C. Cook Nuclear Plant                         Annual Radiological Environmental Ope.rating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Fish (FH)             UNITS: pCi/kq Indicator Stations                          Station Witti Highest Mean             Control Stations Radionuclides              Mean***                         Station             Mean***                        Mean***
 . (No. Analyses)  Required   Range                                               Range                          Range Non-Routine*      LLD      No. Detected**                                      No. Detected**                 No. Detected**
Ru-103      (8)                -6.7E -1                    ONS-N                  -4.6E -1                        -1.5E 0 (0)                -1.4 - -0.l)E 0                                    -8.3 - -0.9)E -1                -2.2 - -0. 6) E 0 (0/ 4)                                             .(0/ 2)                         (0/ 4)
Ri.1-106   (8)                 -5.8E 0                     OFS-N                    1.0E 1                          2.~E     0 (0)                 -1.2 - 0.2).E 1                                      6.5 - 13.6)E 0             (  -4.8     -   13.6)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Ag-108m    (8)                 -1.3E -1                    ONS-S                    9.0E -1                         1.3E -1 (0)                 -2.1 - 1.J)E 0                                       4.9 - 13.l)E -1               -5.8 - 14.2)E -1 (0/ 4)                                               (0/ 2)                         (0/ 4)
Ag-110rri  (8)                 -7.5E -1                    OFS-N                    3.4E -1                         3.4E     -2 (0)                 .:.2. 7 - 1.6)E 0                                    2.6 - 4.l)Ei -1               -7.5     - 4.l)E     -1 (0/ 4)                                               (0/ 2)                         (0/ 4)
Sb-124     (!!)                -1.4E 0                     OFS-N                    6.3E 0                          2.8E 0 (0)                 -3 .. 5. - 1.l)E 0                                   6.1    -    6.5)E 0           -2.5 - 6.5)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Sb-125      (8)                 ~9.6E      -1               OFS-N                    2.lE 0                          2.0E o (0)                 -3.4     - O.S)E     0                               1.8    -    2,3)E 0             1.2 - 2.7)E 0 (0/ 4),                                              (0/ 2)                         (0/ 4) 1-131      (8)                   l.8E 0                    ONS-N                    2.7E 0                        -3.8E -1 (0)           . ( -1.9       -  4.0)E .0                                 1.5 - 4.0)E 0                 -4.6 - 3.2)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Cs-134     (8)   130             2.2E -1                   ON~-N                    1.lE 0                        -1.lE -1 (0)                 -6.8 .4)E -1                                  -1.2 - 23.4)E -1                -1.2 - 1.0)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Cs-137      (8)   150             1.4E 1                    ONS-N                    1.5~      1                     6.0E 0 (0)                   3.9 -* 22.6)E 0                                    7.0     -   ~2.6)E 0            7 .4 ,- 143.0)E -1 (3/ 4),                                              (2/ 2)                        (2/ 4)
Ba-140     (8)                 -2.8E 0                     OFS-S                    3.5E 0                          1.0E 0 (0)                 -9.8 - 7.2)E 0,                                      1. 7 - 5.3)E 0                -1.3 - 1.0)E 1 (0/ 4)                                               (0/ 2)                        (0/ 4)
La-140     (8)                   1.6E -1                   ONS-S                    9.9E -1                       -1.9E 0 (0)                 -1.9 7" 3.7)E 0                                    -1. 7' - 3.7)E 0                -5.3 - 1. 0) E 0 (0/ 4)                                               (0/. 2)                        (0/ 4)
Ce-141     (8)                   5.0E     ~1               ONS-N                    3.'0E 0                         5.8E -1 (0)                 -2.2     - 3.6)E     0
* 2.4 - 3.6)E 0                 -Ll - 2.9)E 0 (0/ 4)                                               (0/ 2)                        (0/ 4)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Fish (FH)           UNITS: pCi/kg Indicator Stations                       Station With Highest Mean             Control Stations Radionuclides                     Mean***                       Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                            Range                         Range Non-Routine*            LLD      No. Detected**                                    No. Detected**                No. Detected**
Ce-144       (8)                     -4.4E -1                   ONS-N                   2.3E 0                     -4.3E 0 (0)                     -6.0 - 4.4)E 0                                     1. 7 - 44.2)E -1           -1.5 - 0.6)E 1 (0/ 4)                                           (0/ 2)                    (0/ 4)
Ac-228      .(8)                     -4.7E -1                   OFS-N                   1.2E 0                     -1.BE 0 (0)                     -5.6 - 3.5)E 0                                   -7.0 - 9.4)E 0               -8.1 - 9.4)E 0 (0/ 4)                                           (0/ 2)                    (0/ 4)
Th-228       (8)                       3.6E -1                  OFS*N                   2.lE 0                       8.5E -1 (0)                     -5.0 - 10.0)E -1                                   1.5 - 2.7)E 0              -3.4 - 2.7)E 0 (0/ 4)                                           (0/ 2)                    (0/ 4)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE Ofor calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Sediment (SE)               UNITS: pCi/kg drv Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
Be-7        (4)              -1.3E 1                    SL*2                  -3.lE 0                    NO DATA (0)              -7.5 - 6. 6)E 1                                  -7.2 - 6.6)E 1 (0/ 4)                                            (0/ 2)
K-40       (4)                5.7E 3                    SL*2                    5.7E 3                   NO DATA (0)                4.9 - 6.6)E 3                                     4.9 - 6.6)E 3 (4/ 4).                                           (2/ 2)
Cr-51      (4)                l.9E 1                    SL*2                    4.4E 1                   NO DATA (0)               -3.6 - 8.9)E 1                                   -1.3 - 88.8)E 0 (0/ 4)                                            (0/ 2)
Mn-54       (4)               5.2E 0                    SL-3                    9.0E 0                   NO DATA (0)               -5.1 - 21.l)E 0                                  -3.2 - 21.l)E 0 (0/ 4)                                            (0/ 2)
Co-57       (4)              -2.0E 0                   *SL-3                    3.0E 0                   NO DATA (0)               -1.4 - 0.5)E 1                                     1.3 - 4.7)E 0 (0/ 4)                                            (0/ 2)
Co-58      (4)               -2.6E 0                    SL*2                    9.5E -2                  NO DATA (0)               -1.3 - 0.8)E 1                                   -7.7 - 7.9)E 0 (0/ 4)                                            (0/ 2)
Fe-59      (4)                4.9E 0                    SL*3                    1.lE 1                   NO DATA (0)               -7.5 - 22.8)E 0                                  -1.3 - 228.0)E -1
                                         . (0/ 4)                                            (0/ 2)
Co-60      (4)                5.8E 0                    SL-3                    l.5E 1                   NO DATA (0)               -1,7 - 3.5)E 1                                   -4.6 - 35.1)E 0 (0/ 4)                                            (0/ 2)
Zn-65      (4).              -1.3E 1                    SL*2                  -1.lE 1                    NO DATA (0)               -3.7 - 1.6)E 1                                   -3.7 - 1.6)E 1 (0/ 4)                                            (0/ 2)
Se-75      (4)                2.4E 0                    SL*3                    2.7E 0                   NO DATA (0)               -2.7 - 8.l)E 0                                   -2.7 - 8.l)E 0 (0/ 4)                                            (0/ 2)
Nb-95      (4)                4.4E -1                   SL*3                    7.1E 0                   NO DATA (0)               -1.8 - 1.0)E 1                                     4.7    -   9.6)E 0 (0/ 4)                                            (0/ 2)
Zr-95      (4)               -1. 7E 0                   SL*2                    1.2E 1                   NO DATA (0)              -2.5 - 1. 6) E 1                                    8.1 - 16.l)E 0 (0/ 4)                                            (0/ 2)
Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Sediment (SE)              UNITS: pCi/kg dry Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides           Mean***                        Station            Mean***                       Mean***
(No. Analyses) Required Range                                             Range                         Range Non-Routine*     LLD    No. Detected**                                    No. Detected**                No. Detected**
Ru-103     (4)              -2.7E 0                    SL-2                    2.7E 0                   NO DATA (0)              -1.2 - 0.9)E 1                                   -3.9 - 9.3)E 0 (0/ 4)                                           (0/ 2)
Ru-106     (4)              -l.8E 1                    SL-2                  -1.2E 1                    NO DATA (0)              -5.6 - 3.2)E 1                                   -5.6 - 3.2)E 1 (0/ 4)                                           (0/ 2)
Ag-108m    (4)              -2.lE -2                   SL-3                    2.9E 0                   NO DATA (0)              -6.8 - 5.3)E 0                                     5.0 - 53.0)E -1 (0/ 4)                                           (0/ 2)
Ag-110m    (4)               1.7E 0                    SL-3                    8.8E 0                   NO DATA (0)              -2.9 - 1.8)E 1                                     4.5 - 13.0)E 0 (0/ 4)                                            (0/ 2)
Sb-124     (4)               1.4E 0                    SL-2                    4.4E 0                   NO DATA (0)              -3.8 - 3.5)E 1                                   -5.9 - 14.6)E 0 (0/ 4)                                            (0/ 2)
Sb-125     (4)               3.5E 0                    SL-3                    l.4E 1                   NO DATA (0)              -1.6 - 3.5)E 1                                   -7.1 - 34.9)E 0 (0/ 4)                                            (0/ 2) 1-131      (4)              -4.4E -1                   SL-2                    1.lE 1                   NO DATA (0)              -2.3 - 2.3)E 1                                   -3.4 - 233.0)E -1 (0/ 4)                                            (0/ 2)
Cs-134     (4)  150          1.2E 1                    SL-2                    1.4E 1                   NO DATA (0)               3.3 - 25.2)E 0                                    3.3 - 2S.2)E 0 (0/ 4)                                            (0/ 2)
Cs-137     (4)  180          6.0E 0                    SL-3                    1.4E 1                   NO DATA (0)              -2.7 - 18.6)E 0                                    9.1 - 18.6)E 0 (0/ 4)"                                           (0/ 2)
Ba-140     (4)             -6.8E 0                     SL-3                    2.2E 1                   NO DATA (0)             -7.7 - 4.4)E 1                                    -2.7 - 440.0)E -1 (0/ 4)                                            (0/ 2)
La-140     (4)               l.3E 0                    SL-2                    8.9E 0                   NO DATA (0)             -1.5 - 1.4)E 1                                      3.8 - 13.9)E 0 (0/ 4)                                            (0/ 2)
Ce-141     (4)               7.lE 0                    SL-2                    1. 9E 1                  NO DATA (0)             -1.1 - 2.0)E 1                                      1.7 - 2.0)E 1 (0/ 4)                                            (0/ 2)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January* December 2015)
MEDIUM: Sediment (SE)              UNITS: pCi/kg dry Indicator Stations                       Station With Highest Mean             Control Stations Radionuclides                     Mean***                       Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                            Range                         Range Non-Routine*            LLD      No. Detected**                                    No. Detected**                No. Detected**
Ce-144      (4)                       1. 9E 0                   SL-2                    1.3E 1                   NO DATA (0)                      -1.4 - 2. 6)E 1                                  -1.2     -   26.4)E 0 (0/ 4)                                           (0/ 2)
Ac-228      (4)                       1.6E 2                    SL-3                    1.BE 2                   NO DATA (0)                       1.1     -  2.0)E 2                                1.5    -   2.0)E 2 (2/ 4)                                            (1/ 2)
Th-228      (4)                       1.4E 2                    SL-3                    1.6E 2                   NO DATA (0)                       1.1     -  2.0)E 2                                1.2    -   2.0)E 2 (3/ 4)                                            (1/ 2)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Food Products CTFl                 UNITS: pCi/kg wet Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
Be-7        (2)                3.8E 1                   OFS-G                   1.5E 2                         l.5E 2 (0)
(1/ 1)                                           (1/ 1)                         (1/ 1)
K-40       (2)                2.4E 3                    OFS-G                   4.lE 3                         4.lE 3 (0)
(1/ 1)                                           (1/ 1)                         (1/ 1)
Cr-51      (2)               -8.9E 0                    ONS-G                 -8.9E 0                        -1. BE 1 (0)
(0/ 1)                                           (0/ 1)                         (0/ 1)
Mn-54      (2)                 4.7E -1                  ONS-G                   4.7E -1                      -1. 6E 0 (0)
(0/ 1)                                            (0/ 1)                         (0/ 1)
Co-57      (2)                1.5E -1                   ONS-G                   l.5E -1                      -8.7E -1 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Co-58      (2)                1.4E 0                    ONS-G                   1.4E 0                         1.3E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Fe-59      (2)                l.3E 0                    ONS-G                   1.3E 0                       -6.lE 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Co-60      (2)                3.5E -1                   ONS-G                   3.5E -1                      -3.4E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Zn-65      (2)               -9.0E"O                    OFS-G                 -6.3E -1                       -6.3E -1
                                                            \_
(0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Se-75      (2)                5.2E -1                   ONS-G                   5.2E -1                      -1.2E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Nb-95      (2)                1.lE 0                    ONS-G                   1.lE 0                         5.3E -2 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Zr-95      (2)                2.5E 0                    OFS-G                   4.7E 0                         4.7E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Food Products (TF)                 UNITS:      pCi/kg wet Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides                     Mean***                        Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                             Range                         Range Non-Routine*            LLD       No. Detected**                                    No. Detected**                No. Detected**
Ce-144      (2)                        2.lE 0                    ONS*G                   2.lE 0                     -3.6E 0 (0)
(0/ 1)                                           (0/ 1)                    (0/ 1)
Ac-228      (2)                        3.SE 0                    ONS-G                   3.SE 0                     -2.2E 1 (0)
(0/ 1)                                            (0/ 1)                    (0/ 1)
Th-228      (2)                        2.4E 0                    ONS-G                   2.4E 0                       6.0E -1 (0)
(0/ 1)                                            (0/ 1)                    (0/ 1)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
*** Mean value set to O.OE O for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant *
(January - December 2015)
MEDIUM: Vegetation (TV)              UNITS: pCi/kgwet Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides             Mean***                        Station            Mean***                       Mean***
(No. Analyses)   Required Range                                             Range                         Range Non-Routine*       LLD    No. Detected**                                    No. Detected**                No. Detected**
Be-7        (28)                l.6E 3                   ONS3-V                  2.0E 3                         1.4E 3 (0)                 3.4 - 37.3)E 2                                   8.8 - 36.2)E 2                 9.4 - 18.2)E 2 (24/ 24)                                           (9/ 9)                         (4/ 4)
K-40        (28)                2.6E 3                   OFS1-V                  3.4E 3                         3.2E 3 (0)                 1.0 - 5.7)E 3                                    3.3 - 3.7)E 3                  2.6 - 3.7)E 3 (24/ 24)                                           (3/ 3)                         (4/ 4)
Cr-51       (28)              -4.lE 0                    OFS1-V                  1.2E 1                       -1.5E -1 (0)               -6.6 - 5.2)E 1                                   -5.7 - 27.3)E 0                -3.5 - 2.7)E 1 (0/ 24)                                           (0/ 3)                         (0/ 4)
Mn-54       (28)               1. 6E -1                  ONS1-V                  5.9E -1                        3.lE -1 (0)               -3.4 - 5.2)E 0                                   -2.0 - 5.2)E 0                 -7.4 - 7.9)E -1 (0/ 24)                                          (0/ 12)                        (0/ 4)
Co-57       (28)                7.8E -1                  ONS3-V                  1.5E 0                         2.lE -1 (0)               -2.5 - 7.0)E 0                                     5.5 - 36.2)E -1              -9.2 - 12.5)E -1 (0/ 24)                                           (0/ 6)                        (0/ 4)
Co-58       (28)               1. 2E -1                  ONS3-V                  2.3E 0                       -1.4E 0 (0)               -8.4 - 8.l)E 0                                   -1.4 - 5.7)E 0                 -2.0 - -0.6)E 0 (0/ 24)                                           (0/ 6)                        (0/ 4)
Fe-59     - (28)               5.9E -1                   ONS3-V                  l.8E 0                       -7. 6E 0 (0)               -1.4 - 1.3)E 1                                   -1.4 - 1.2)E 1                 -1.2 - -0.3)E 1 (0/ 24)                                           (0/ 6)                        (0/ 4)
Co-60       (28)               4.9E -1                   ONS2-V                  l.8E 0                       -1. 7E 0 (0)               -6.9 - 7.8)E 0                                   -1. 7 - 7.8)E 0                -6.6 - 1.4)E 0 (0/ 24)                                           (0/ 6)                        (0/ 4)
Zn-65       (28)              -4.8E 0                    ONS1-V                -8.9E -1                       -3.0E 0 (0)               -3.3 - 0.8)E 1                                   -1.0 - 0.8)E 1                 -7.1 - 2.9)E 0 (0/ 24)                                          (0/ 12)                        (0/ 4) 0 Se-75       (28)               8.3E -l                   ONS1-V                  2.2E 0                       -1.3E 0 (0)               -3.8 - 5.4)E 0                                   -3.8 - 5.4)E 0                 -2.8 - 1.l)E 0 (0/ 24)                                           (0/ 12)                        (0/ 4)
Nb-95       (28)               l.OE 0                    OFS1-V                 1.9E 0                         1. 6E 0 (0)               -5.8 - 4.6)E 0                                     9.2 - 347.0)E -2               9.2 - 347.0)E -2 (0/ 24)                                            (0/ 3)                        (0/ 4)
Zr-95       (28)               1. 3E -1                  ONS1-V                  1.4E 0                       -1.SE 0 (0)               -8.7 - 13.4)E 0                                  -8.7 - 13.4)E 0                -3.5 - -0.7)E 0 (0/ 24)                                           (0/ 12)                        (0/ 4)
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Vegetation (TV)             UNITS: pCi/kgwet Indicator Stations                        Station With Highest Mean           Control Stations Radionuclides            Mean***                        Station           Mean***                      Mean***
(No. Analyses)  Required Range                                            Range                        Range Non-Routine*      LLD    No. Detected**                                   No. Detected**               No. Detected**
Ru-103     (28)                4.7E -1                  OFS2-V                 l.5E 0                        6.0E -1 (0)               -3.7 - 4.l)E 0                                                                -2.0 - 15.3)E -1 (0/ 24)                                         (0/ 1)                         (0/ 4)
Ru-106     (28)                2.4E 0                   OFS1-V                 2.2E 1                        1.lE 1 (0)               -3.2 - 5.l)E 1                                    3.2 - 59.8)E 0              -2.4 - 6.0)E 1 (0/ 24)                                         (0/ 3)                         (0/ 4)
Ag-108m    (28)              -5.lE -1                   ONS2-V                 5.3E -1                     -1.lE 0 (0)               -4.6 - 8.9)E 0                                  -3.1 - 8.9)E 0                -4.7 - 3.l)E 0 (0/ 24)                                         (0/ 6)                         (0/ 4)
Ag-110m    (28)              -8.lE -1                   OFS2-V                 1.6E 0                      -8.2E -1 (0)               -8.4 - 4.8)E 0                                                                -3.5 - 2.0)E 0 (0/ 24)                                         (0/ 1)                         (0/ 4)
Sb-124     (28)              -2.4E -1                   ONS2-V                 5.8E 0                        1.4E 0 (0)               -1.2 - 1.2)E 1                                  -7.8 - 12.4)E 0               -2.0 - 3.4)E 0 (0/ 24)                                         (0/ 6)                         (0/ 4)
Sb-125     (28)               7.9E -1                   OFS1-V                 2.5E 0                      -4.2E -1 (0)               -1.2 - 1.5)E 1                                  -3.5 - 11.l)E 0               -9.1 - 11.l)E 0 (0/ 24)                                          (0/ 3)                         (0/ 4) 1-131      (28)   60         -1.5E 0                    OFS2-V                 3.4E 0                        1.4E 0 (0)               -9.4 - 6.4)E 0                                                                -1.0 - 3.4)E 0 (0/ 24)                                         (0/ 1)                        (0/ 4)
Cs-134     (28)   60          1.0E 0                    OFS2-V                 2.8E 0                        1.8E 0 (0)               -5.8 - 7.0)E 0                                                                  1.2 - 2.8)E 0 (0/ 24)                                         (0/ 1)                        (0/ 4)
Cs-137     (28)   60          5.7E 0                    ONS2-V                 9.lE 0                        3.3E 0 (0)               -6.0 - 28.6)E 0                                 -1. 7 - 25.5)E 0                3.4 - 48.8)E -1 (3/ 24)                                          (1/ 3)                        (0/ 4)
Ba-140     (28)              -1. 5E 0                   OFS1-V                 1.lE 1                        1.lE 1 (0)               -3.1 - 2.l)E 1                                    4.0 - 18.2)E 0                4.0 - 18.2)E 0 (0/ 24)                                          (0/ 3)                        (0/ 4)
La-140     (28)              -6.8E -2                   ONS2-V                 3.9E 0                      -1.4E 0 (0)               -7.4 - 16.3)E 0                                 -2.7 - 16.3)E 0               -3.6 - 0.2)E 0 (0/ 24)                                          (0/ 6)                        (0/ 4)
Ce-141     (28)               9.3E -1                   ONS2-V                 5.4E 0                      -6.7E -1 (0)               -2.0 - 1. 4)E 1                                   5.1 - 136.0)E -1            -1.2 - 0.4)E 1 (0/ 24)                                          (0/ 6)                        (0/ 4)
Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Vegetation !TV!            UNITS: pCi/kg wet Indicator Stations                       Station With Highest Mean        Control Stations Radionuclides                     Mean***                        Station          Mean***                   Mean***
(No. Analyses)        Required    Range                                           Range                     Range Non-Routine*            LLD       No. Detected**                                  No. Detected**            No. Detected**
Ce-144       (28)                     -1. 7E 0                   ONS2-V               1. 7E -2                -6.9E 0 (0)                      -2.9 - 5.B)E 1                                 -2.9 - 5.B)E 1           -1.4 - 0.3)E 1 (0/ 24)                                      (0/ 6)                   (0/ 4)
Ac-22*8      (28)                      1.3E 1                    ONS3-V               2.3E 1                    2.lE 1 (0)                      -3.3     -   6.2)E 1                            4.9 - 50.7)E 0            1.4 - 2.9)E 1 (0/ 24)                                      (0/ 6)                   (0/ 4)
Th-228       (28)                      1. 6E 0                   OFS1-V.              8.0E 0                    3.8E 0 (0)                      -1. 7 - 2.3)E 1                                 6.5   -   9.2)E 0       -8.8 - 9.2)E 0 (1/ 24)                                      (0/ 3)                   (0/ 4)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
** The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Drinking Water {WDl                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides             Mean***                        Station            Mean***                       Mean***
(No. Analyses)   Required Range                                             Range                         Range Non-Routine*       LLD    No. Detected**                                    No. Detected**                No. Detected**
BETA        (52)    4          1.5E 0                    LTW                     1.5E 0                         1.3E 0 (0)                -1. 7 - 2.B)E 0                                  -1. 7 - 2.8)E 0                -8.1 - 31.3)E -1 (0/ 26)                                          (0/ 26)                        (0/ 26)
H-3        (8)    2000        -1. SE 2                   STJ                   -7 .BE 1                       -7.BE 1 (0)                -3.9 - 1.7)E 2                                   -6.1 - 4.3)E 2              ( -6.1 -        4.3)E 2 (0/ 4)                                           (0/ 4)                         (0/ 4)
Be-7       (52)                4.0E 0                    LTW                     4.0E 0                         3.9E 0 (0)                -1.5 - 3.0)E 1                                   -1.5 - 3.0)E 1                 -4.0 - 3.2)E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
K-40       (52)                1.SE 0                    STJ                     l.2E 1                         l.2E 1 (0)                -5.0 - 6.l)E 1                                   -2.7 - 5.S)E 1                 -2.7 - 5.B)E 1 (2/ 26)                                          (0/ 26)                        (0/ 26)
Cr-51      (52)                3.2E 0                    LTW                     3.2E 0                       -1. 3E -1 (0)                -1.3 - 2.4)E 1                                   -1.3 - 2.4)E 1                 -2.1 - 1.8)E 1 (0/ 26)                                           (0/ 26)                        (0/ 26)
Mn-54      (52)    15         -4.0E -1                   STJ                   -3.SE -1                       -3.SE -1 (0)                -2.6 - 1.4)E 0                                   -1.8 - 1.4)E 0                 -1.8 - 1.4)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-57      (52)               -9.9E -2                   LTW                   -9.9E -2                       -3.5E -1 (0)                -2.8 - 2.5)E 0                                   -2.8 - 2.5)E 0                 -3.4 - 1.3)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-58      (52)    15         -1. SE -1                  LTW                   -1.SE -1                       -2.5E -1 (0)                -1. 9 - 2.0)E 0                                  -1.9 - 2.0)E 0                 -5.7 - 2.6)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Fe-59      (52)    30         -2.4E -1                   STJ                     1.6E 0                         1.6E 0 (0)                -3.7 - 2.3)E 0                                   -1.2 - 4.8)E 0                 -1.2 - 4.8)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-60      (52)    15          3.6E -1                   LTW                     3.6E -1                        2.7E -1 (0)               -1.9 - 2.5)E 0                                    -1. 9 - 2.5)E 0                -2.1 - 3.5)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Zn-65      (52)    30        -1.SE 0                     STJ                     3.lE -1                        3.lE -1 (0)               -9.5 - 2.7)E 0                                    -5.1 - 9.8)E 0                 -5.1 - 9.8)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Se-75      (52)                3.2E -1                   LTW                     3.2E -1                      -2.lE -1 (0)               -2.7      -  7.0)E 0                              -2.7 - 7.0)E 0                 -2.2 - 2.8)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Drinking Water (WD)                UNITS: pCi/liter Indicator Stations                        Station With Highest Mean           Control Stations Radionuclides             Mean***                        Station           Mean***                      Mean***
(No. Analyses)   Required Range                                            Range                        Range Non-Routine*       LLD    No. Detected**                                   No. Detected**               No. Detected**
Nb-95       (52)   15           2.2E -1                  STJ                    7.5E -1                       7.SE -1 (0)               -3.4 - 3.3)E 0                                   -1.6 - 3.9)E 0               -1. 6 - 3. 9) E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Zr-95       (52)   30         -9.9E -2                   STJ                    7.6E -1                       7.6E -1 (0)               -4.0 - 3.8)E 0                                  -2.7 - 6.5)E 0                -2.7 - 6.5)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ru-103      (52)              -2.6E -1                   LTW                  -2.6E -1                      -3.2E -1 (0)               -2.7 - 1.7)E 0                                  -2.7 - 1.7)E 0                -3.9 - 2.0)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ru-106      (52)               1.lE 0                    STJ                    1.2E 0                        1.2E 0 (0)               -1.1 - 3.3)E 1                                  -1. 7 - 1.4)E 1               '-1.7 - l.4)E 1 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ag-108m     (52)                5.7E -2                  STJ                    4.4E -1                       4.4E -1 (0)                -2.5 - 2.8)E 0                                  -1.9 - 3.9)E 0                -1.9 - 3.9)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ag-110m    (52)               -4.8E -2                   LTW                  -4.8E -2                      -4.lE -1 (0)                -3.3 - 2.8)E 0                                  -3.3 - 2.8)E 0                -3.4 - 1.4)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Sb-124     (52)               -4.SE -1                   LTW                  -4.SE -1                      -8.lE -1 (0)                -1.3 - 0. 7)E 1                                 -1.3 - 0.7)E 1                -7.9 - 4.4)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Sb-125     (52)                1. SE -2                  LTW                    1.5E -2                     -1.SE 0 (0)                -1.0 - O.S)E 1                                  -1.0 - O.S)E 1                -7.3 - 4.9)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26) 1-131      (52)     1          3.5E -2                   STJ                    4.5E -2                       4.SE -2 (0)                -6.1 - 7.8)E -1                                 -4.4 - 8.0)E -1               -4.4 - 8.0)E -1 (0/ 26)                                         (0/ 26)                     (0/ 26)
Cs-134     (52)    15          3.3E -1                   STJ                    4.3E -1                       4.3E -1 (0)                -2.7 - 7.l)E 0                                  -2.9 - 2.9)E 0                -2.9 - 2.9)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Cs-137     (52)    18           3.0E -1                  LTW                    3.0E -1                       6.2E -2 (0)                -2.0 - 5.0)E 0                                  -2.0 - 5.0)E 0                -4.2 - 2.8)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ba-140     (52)    60         -1. 4E -1                  STJ                    3.7E 0                        3.7E 0 (0)                -1.2 - 1. 6)E 1                                 -1.2 - 2.3)E 1                -1.2 - 2.3)E 1 (0/ 26)                                         (0/ 26)                     (0/ 26)
Donald C. Cook Nuclear Plant                            Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Drinking Water (WO)                 UNITS: pCi/liter Indicator Stations                      Station With Highest Mean             Control Stations Radionuclides                     Mean***                      Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                           Range                         Range Non-Routine*            LLD       No. Detected**                                  No. Detected**                No. Detected**
La-140       (52)        15          -4.SE -2                  STJ                     1.lE -1                      1.lE -1 (0)                     -4.0 - 2.5)E 0                                  -3.9 - 4.7)E 0               -3.9 - 4.7)E 0 (0/ 26)                                          (0/ 26)                    (0/ 26)
Ce-141      (52)                      7.7E -1                  LTW                     7.7E -1                      7.4E -1 (0)                      -3.5 - 5.4)E 0                                  -3.5 - 5.4)E 0               -6.6 - 7.9)E 0 (0/ 26)                                          (0/ 26)                    (0/ 26)
Ce-144      (52)                      3.2E -1                  LTW                     3.2E.-l                    -2.5E -1 (0)                      -1. 6 - 2.2)E 1                                 -1.6 - 2.2)E 1               -1.4 - 2.3)E 1 (0/ 26)                                          (0/ 26)                    (0/ 26)
Ac-228      (52)                     -6.5E -1                  STJ                     3.SE -1                      3.SE -1 (0)                      -1.3 - 0.9)E 1                                  -1.0 - 2.0)E 1               -1.0 - 2.0)E 1 (0/ 26)                                          (0/ 26)                    (0/ 26)
Th-228      (52)                      2.lE 0                   LTW                     2.lE 0                       l.7E 0 (0)                      -3.1 - 9.4)E 0                                  -3.1 - 9.4)E 0               -5.6 - 9.4)E 0 (0/ 26)                                          (0/ 26)                    (1/ 26)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Ground Water. (WG)             UNITS: pCi/liter Indicator Stations                     Station With Highest Mean          Control Stations Radionuclides             Mean***                      Station           Mean***                    Mean***
(No. Analyses)   Required Range                                          Range                      Range Non-Routine*       LLD    No. Detected**                                 No. Detected**             No. Detected**
H-3        (68)   2000        -2 .. 5E 2               W-5                   1.3E 2                 NO DATA (0)                -1.2 - 0.8)E 3                                -3.2 - 7.6)E 2 (0/ 68)                                        (0/ 4)
Be-7       (68)                3.3E 0                  W*3                   1'.4E 1                NO DATA (0)                -2.1 - 4.0)E 1                                 4.2 - 23.3)E 0 (0/ 68)                                        (0/ 4)
K-40       (68)                9.3E 0                  W-3                   2.6E 1                 NO DATA (0)                -3.8 - 4.5)E 1                                 8.3 - 37.0)E 0 (1/ 68)                                        (0/ 4)
Cr-51      (68)'             -1. 3E 0                  W-12                  7.3E 0                 NO DATA (0)               -3.2 - 2.8)E 1                                -3.9 - 23.4)E 0 (0/ 68)                                        (0/ 4)
Mn-54      ((i8)   15          1.1E -1                 W-7                   1.2E 0                 NO DATA (0)               -3.1 - 4.7)E 0                                  4.3 -- 28.1)E -1 (0/ 68)                                        (0/ 4)
Co-57      (68)              -5.2E -2.                 W-15                  9.3E -1                NO DATA (0)                -2.9 - 2.7)E 0                               -1.2 - 2.7)E 0 (0/ 68)                                        (0/ 4)
Co-58      (68)    15        -4. 6E -1                 W-13                  5.2E -1                NO DATA (0)               -3.1 - 3.5)E 0                                -2.5 - 3.5)E 0 (o/ 68)                                        (0/ 4)
Fe-59      (68)    30        -3.4E -1                  W-2                   1.7E 0                 NO DATA (0)                -6.8 - 7.:i)E .0                             -1. 4 - 7. 2)E 0 (0/ 68)                                        (0/ 4)
Co"60      (68)    15          5.8E -1                 MW-20                 2.3E 0                 NO DATA (0)               -1.9 - 4.1-)E 0                                 9.2 - 37.2)E -1 (0/ 68)                                        (0/ 4)
Zn-65      (68)    30        -6.8E -1                  W-15                  2.0E 0                 NO DATA (0)               -8.8 - 9.0)E 0                                -3.5 - 9.0)E 0 (0/ 68)                                        (0/ 4)
Se-75      (68)                1. OE -1                W-10                  2.0E 0                 NO DATA (0)               -5.0 - 3.6)E 0                                  7.0 - 36.0)E -1 (0/ 68)                                        (0/ 4)
Nb-95      (68)    15          6.2E -1                 W-4                   1.7E 0                 NO DATA (0)            .( ~2.7      - 4.0)E 0                             1.1 - 2.4)E 0 (0/ 68)                                        (0/ 4)
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Ground Water !WG)              UNITS: pCi/liter Indicator Stations                      Station With Highest Mean       Control Stations Radionuclides            Mean***                        Station         Mean***                  Mean***
(No. Analyses)  Required Range                                          Range                    Range Non-Routine*      LLD    No. Detected**                                 No. Detected**           No. Detected**
Zr-95      (68)   30         -1. 7E -1                  W-12                2.5E 0               NO DATA (0)               -9.9 - 10.0)E 0                               -3.2 - 10.0)E 0 (0/ 68)                                     (0/ 4)
Ru-103     (68)              -5.9E -1                   W-13
* 9. 7E -1             NO DATA (0)               -3.9 - 3.2)E 0                             ( -5.3 - 30.B)E -1 (0/ 68)                                     (0/ 4)
Ru-106     (68)                2.0E 0                   W-1                 1.2E 1               NO DATA (0)               -2.2 - 2.9)E 1                           . ( -3.9 - 288.0)E -1 (0/ 68)                                     (0/ 4)
Ag-108m    (68)               2.0E -1                   W-15                1.3E 0               NO DATA (0)               -2.5 - 4.2)E 0                                -6.9 - 204.0)E -2 (0/ 68)                                     (0/ 4)
Ag-110m    (68)              -3.2E -1                   W-4                 5.lE -1              NO*DATA (0)               -3.2 - 4.2)E 0                                -5.1 - 13.4)E -1 (0/ 68)                                     (0/ 4)
Sb-124     (68)                2.7E -1                  W,11                4.lE 0               NO DATA (0)               -6.9 - 7.4)E 0                                -1.1 - 7.4)E 0 (0/ 68)                                     (0/ 4)
Sb-125     (68)              -1. BE -1                  W-6                 4.0E 0               NO DATA (0)               -1.2 - 0.9)E 1                                 2.3 - 7.7)E 0 (0/ 68)                                     (0/ 4) 1-131      (68)    1          3.BE -2                   W-2                 2.4E 0.              NO DATA (0)               -5.7 - 6.5)E 0                                 1.7 - 3.0)E 0 (0/ 68)                                     (0/ 4)
Cs-134     (68)   15           6.4E -2                  W-15
* 1.2E 0               NO DATA (0)               -2.7 - 6.9)E 0                                -2.3 - 6.9)E 0 (0/ 68)                                     (0/ 4)
Cs-137     (68)   18          2.lE -1                   W-6                 2.5E 0               NO DATA (0)               -4.0 - 3.3)E 0                                 1.3 - 3.3)E 0 (0/ 68)                                      (0/ 4)
Ba-140     (68)   60         -2.lE -1                   W-6                 3.9E 0               NO DATA (0)               -2.4 - 1.6)E 1                                 1.2 - 9.B)E 0 (0/ 68)                                      (0/ 4)
La-140     (68)   15          3.5E: -1                  W-9                 2.4E 0               NO DATA (0)               -5.5 - 6.B)E 0                                 1.4 - 4.9)E 0 (0/ 68)                                      (0/ 4)
Donald C. Cook Nuclear Plant                           Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Ground Water !WG)                UNITS: pCi/liter Indicator Stations                     Station With Highest Mean            Control Stations Radionuclides                     Mean***                     Station            Mean***                      Mean***
(No. Analyses)        Required    Range                                          Range                        Range Non-Routine*            LLD       No. Detected**                                 No. Detected**               No. Detected**
Ce-141      (68)                       6.7E -1                W-2                     3.SE 0                  NO DATA (0)                      -6.6    -  7 .9)E 0                              3.0 - 4.7)E 0 (0/ 68)"                                        (0/ 4)
Ce-144      (68)                       1.0E 0                 W-14                    1.1E 1                  NO DATA (0)                      -1. 7   -  4.2)E 1                             -2.3     -  420.0)E -1 (0/ 68)                                          (0/ 4)
Ac-228      (68)                       2.6E 0                 W-11                    8.2E 0                  NO DATA (0)                      -1.1    -  2.7)E 1                             -5.2     -  26.9)E 0 (0/ 68)                                          (0/ 4)
Th-228      (68)                       1. 7E 0                W-15                    6.SE 0                  NO DATA (Q)                      -7.6 - 14.8)E 0                                -6. 7    -  14.8)E 0 (2/ 68)                                          (0/ 4)
*Non-Routine refers to radionuclides.exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
*** Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Surface Water {WS)                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
H-3         (6)  2000        -2.4E 2                    SWL-3                  -2.0E 2                   NO DATA (0)              -1.1 - 0.2)E 3                                    -6.4 - 1. 7)E 2 (0/ 6)                                           (0/ 3)
Be-7       (18)               1.2E 0                    SWL-2                   3.9E 0                   NO DATA (0)               -1.2 - 1.2)E l                                   -1.2 - 1.2)E 1 (0/ 18)                                           (0/ 9)
K-40       (18)              -3.5E 0                    SWL-3                 -9.6E -1                   NO DATA (0)               -2.4 - 2.5)E 1                                   -2.3 - 2.5)E 1 (0/ 18)                                           (0/ 9)
Cr-51      (18)               1.lE 0                    SWL-2                   4.5E 0                   NO DATA (0)               -1.8 - 1. 7)E 1                                  -6.9 - 16.9)E 0 (0/ 18)                                           (0/ 9)
Mn-54      (18)   15           8.7E -2                  SWL-2                   3.7E -1                  NO DATA (0)               -1.6:... 2.7)E 0                                 -1.2 - 2.7)E 0 (0/ 18)                                           (0/ 9)
Co-57      (18)               1. 4E -2                  SWL-2                   1. 9E -1                 NO DATA (0)               -1.l - 1.3)E 0                                   -5.9 - 12.8)E -1 (0/ 18)                                           (0/ 9)
Co-58      (18)   15          1. 6E -1                  SWL-2                   4.6E -1                  NO DATA (0)               -1.2 - 2.5)E 0                                   -1.1 - 2.5)E 0 (0/ 18)                                           (0/ 9)
Fe-59      (18)   30         _:1.4E -1                  SWL-2                   1. 6E -1                 NO DATA (0)               -2.4 - 2.4)E 0                                   -2.2 - 2.4)E 0 (0/ 18)                                           (0/ 9)
Co-60      (18)   15          1.5E -1                   SWL-3                   2.6E -1                  NO DATA (0)               -1.0 - l.5)E 0                                   -5.6 - 15.l)E -1 (0/ 18)                                           (0/ 9)
Zn-65      (18)   30         -8.4E -1                   SWL-3                 -8.3E -1                   NO DATA (0)               -3.3 - 1. 7)E 0                                  -3.3 - 1.4)E 0 (0/ 18)                                           (0/ 9)
Se-75      (18)               1.2E -1                   SWL-2                   2.4E -1                  NO DATA (0)               -1.3 - 2.0)E 0                                   -1.3 - 2.0)E 0 (0/ 18)                                           (0/ 9)
Nb-95      (18)   15          3.3E -1                   SWL-3                   3.7E -1                  NO DATA (0)               -1. 6 - 2.l)E 0                                  -1. 6 - 2.l)E 0 (0/ 18)                                            (0/ 9)
Donald C. Cook Nuclear Plant                       Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Surface Water !WSl                 UNITS: pCi/liter
                            ..Indicator   Stations
______________________                  Station With Highest Mean             Control Stations Radionuclides             Mean***                         Station            Mean***                       Mean***
(No. Analyses)   Required  Range                                             Range                         Range Non-Routine*       LLD    No. Detected**                                     No. Detected**                No. Detected**
Zr-95       (18)   30           -2.4E -1                  SWL-3                 -2.2E -1                   NO DATA (0)                 -2.0 - 2.1i:E o                                 -2.8 - 2.l)E 0 (0/ 18)                                           (0/ 9)
Ru-103     (18)                 -7.8E -1                  SWL-2                 -3.7E -1                   NO DATA (0)                  -6.0 - 0.9)E 0                                  -1.2 - 0.9)E 0 (0/ 18)                                           (0/ 9)
Ru-106     (18)                 -6.2E -1                  SWL-2                   2.7E 0                   NO DATA (0)                  -1.1 - 1.8)E 1                                  -1.1 - 1.8)E 1 (0/ 18)                                           (0/ 9)
Ag-108m    (18)                 -4.0E -1                  SWL-3                 -1.2E -1                   NO DATA (0)                  -2.7 - 0.7)E 0                                  ...:2.2 - 0.7)E 0 (0/ 18)                                           (0/ 9)
. Ag-110m    (18)                 -4.5E ~1                  SWL-2                 -2.2E -1                   NO DATA (0)                  -3.5 - 0.7)E 0                                  -3.1 - 0.7)E 0 (0/ 18)                                           (0/ 9)
Sb-124     (18)                 -3.4E -1                  SWL-3                 -5.4E -2                   NO DATA (0)                  -3.8 - 2.8)E 0                                  -3.1 - 2.8)E 0 (0/ 18)                                           (0/ 9)
Sb-125     (18)                 -4.5E -1                  SWL-3                   5.0E -1                  NO DATA (0)                  -3.9 - 3.4)E 0                                  -2.2 - 3.4)E 0 (0/ 18)                                           (0/ 9) 1-131      (18)     1           -2.9E -1                  SWL-3                   1.2E 0                   NO DATA (0)                  -1.0 - 0.9)E 1                                  -1.8 - 7 .3)E 0 (0/ 18)                                           (0/ 9)
Cs-134     (18)    15            1. 3E -1                 SWL*3                   2.6:e: -1                NO DAT.I\.
(0)                  -1. 7 - 1.l)E 0                                 -8.9 - 10.5)E -1 (0/ 18)                                           (0/ 9)
Cs-137     (18)    18            4.8E -1                  SWL*2                   6.2E -1                  NO DATA (0)                  -8.8 - 32.2)E -1                                -9.7 - 322.0)E -2 (0/ 18)                                           (0/ 9)
Ba-140     (18)    60            3.5E 0                   SWL-2                   4.9E 0                   NO DATA (0)                  -1.8 - 1.9)E 1                                  -7.3 - 19.3)E 0 (0/ 18)                                           (0/ 9)
La-140     (18)    15           -2.6E -1                  SWL*3                 -3.lE -2                   NO DATA (0)                  -7.2 - 3.3)E 0                                  -3.4 - 3.3)E 0 (0/ 18)                                           (0/ 9)
Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Surface Water IWS)                UNITS: pCi/liter Indicator Stations                        Station With Highest Mean            Control Stations Radionuclides                     Mean***.                       Station            Mean***                      Mean***
(No. Analyses)        Required    Range                                             Range                        Range Non-Routine*
* LLD       No. Detected**                                    No. Detected**               No. Detected**
Ce-141      (18)                       1.2E 0                    SWL-2                  1.6E 0                   NO DATA (0)                      -3.7 - 5.0)E 0                                   -1. 6 - 4.3)E 0 (0/ 18)                                          (0/ 9)
Ce-144      (18)                      -1.3E 0                    SWL-3                 -4.0E -1                  NO DATA (0)                       -1.4 - 0.7)E 1                                   -4:7 - 7.l)E 0 (0/ 18)                                          (0/ 9)
Ac-228      (18)                       1.9E 0                    SWL-3                  4.0E 0                   NO DATA (0)                       -8.1 - 16.8)E 0                                  -7.8 - 16.8)E 0 (0/ 18)                                          (0/ 9)
Th-228      (18)                       1.3E 0                    SWL-3                  1.5E 0                   NO DATA (0)                       -3.2 - 8.l)E 0                                   -3.2 - 8.l)E 0 (0/ 18)                                          (0/ 9)
*Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
*** Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 3.2 2015 Environmental TLD Exposure Rate Measurements
(&#xb5;R/hr)
Offsite and Control Onsite TLDs                               Highest Mean {SBN)
TLDs Mean                 5.1 +/- 0.4             5.6 +/- 0.8                7.2 +/-*0.7 Range                3.9 - 5.7             4.1-7.8                  6.1 - 7.8 No. of Measurements*             48                    60                        4
* ,    Each measurement was based on quarterly readings from three TLD elements.
Units are &#xb5;R (micro-roentgen) per hour.
Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Table 3.3 2015 ENVIRONMENTAL TLD DATA 

==SUMMARY==

Exposure Rate
(&#xb5;R/hr +/- 1 std. dev.)
Average Annual First         Second                 Third        Fourth        Exposure Rate Station Number       Quarter          Quarter              Quarter       Quarter            (&#xb5;R/hr)
T-01          4.7 +/- 0.2        5.3 +/- 0.2            5.1+/-0.2       5.6 +/- 0.3*            5.2 T-02          4.7 +/- 0.2        5.4 +/- 0.5            5.2 +/- 0.1     5.5 +/- 0.2             5.2 f        T-03          3.9 +/- 0.2        4.5 +/- 0.3            5.1+/-0.3      5.7 +/- 0.3              4.8
       . T-04          5.1+/-0.2          5.6 +/- 0.2          . 5.5 +/- 0.2    5.0 +/- 0.2              5.3 T-05          4.7 +/- 0.3        5.2 +/- 0.4            5.1+/-0.2      5.6 +/- 0.4              5.2 T-06          4.4 +/- 0.3        5.2 +/- 0.2            5.3 +/- 0.4     5.3 +/- 0.3             5.1 T-07          4.5 +/- 0.3        5.3 +/- 0.2            5.2 +/- 0.2    5.3 +/- 0.2              5.1 T-08          4.7.+/- 0.2        5.1+/-0.3              5.1+/-0.3      5.4 +/- 0.3              5.1 T-09          4.4 +/- 0.2        4.9 +/- 0.2            4.9 +/- 0.1    5.2 +/- 0.2              4.9 T-10          4.6 +/- 0.3        5.3 +/- 0.2            5.2 +/- 0.3    5.3 +/- 0.3              5.1 T-11          4.6 +/- 0.4        5.3 +/- 0.2            5.2 +/- 0.3    5.6 +/- 0.3              5.2 T-12          4.8 +/- 0.4        5.0 +/- 0.2            5.3 +/- 0.2    5.6 +/- 0.2              5.2 NBF           5.2 +/- 0.2        5.7 +/- 0.5            5.5 +/- 0.3    5.7 +/- 0.2              5.5 SBN           6.1+/-0.3          7.8 +/- 0.5            7.4 +/- 0.4    7.3 +/- 0.3            ' 7.2 oow*           4.4 +/- 0.2        5.1+/-0.2              5.0 +/- 0.2    5.1+/-0.2                4.9 COL           4.1 +/- 0.2        4.7 +/- 0:2            5.0 +/- 0.3    4.9 +/- 0.3              4.7 OFT-1          4.3 +/- 0.2        5.3 +/- 0.3            5.1 +/- 0.2    5.3+/- 0.3               5.0 OFT-2          4.7 +/- 0.2        5.3 +/- 0.2            5.8 +/- 0.4    5.7 +/- 0.2              5.4 OFT-3          4.7 +/- 0.2        5.4 +/- 0.4 .          5.6 +/- 0.2    5.8 +/- 0.2              5.4 OFT-4          5.1 +/-,0.4        5.5 +/- 0.3            5.6 +/- 0.2    6.2 +/- 0.3              5.6 OFT-5          4.7 +/- 0.2        5.2 +/- 0.3            5.7 +/- 0.4    5.7 +/- 0.3              5.3 OFT-6          5.7 +/- 0.3        6.3 +/- 0.3         . 7.1 +/- 0.3     7.3 +/- 0.3              6.6 OFT-7          4.7 +/- 0.2        5.5 +/- 0.2            5.5 +/- 0.2    5.7+/- 0.2               5.4 OFT-8          5.5 +/- 0.2        6.3 +/- 0.3            6.6 +/- 0.6    6.6 +/- 0.3              6.3 OFT-9          4.8 +/- 0.3        5.9 +/- 0.2            6.0 +/- 0.3    6.3 +/- 0.4              5.8 OFT-10          4.8 +/- 0.2       -5.3 +/- 0.4            5.4 +/- 0.2    5.5 +/- 0.2              5.3 OFT-11          6.0 +/- 0.2        6.1+/-0.5              6.8 +/- 0.2    6.7 +/- 0.3              6.4 Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 4.0    ANALYSIS OF ENVIRONMENTAL RESULTS 4.1    Sampling Program Deviations The ODCM states in Section 3.5 that the environmental sampling and analysis program shall be conducted as specified in Attachment 3.19 at the locations specified in the same attachment. Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability or malfunction of automatic sampling equipment. If specimens are unobtainable due to sampling equipment malfunction, every effort shall be made to complete corrective action prior to the end of the next sampling period.
All deviations from the sampling schedule shall be documented in the Annual Radiological Environmental Operating Report pursuant to Section 3.5.2 of the ODCM. In addition, sampling program deviations are documented in CNP's action tracking system by way of an Action Request (AR) or General tracker (GT). The following deviations were noted for the 2015 sampling program:
: 1. No surface water samples were obtained during the first quarter of 2015 due to ice buildup along the shore of Lake Michigan. A Data Sheet 1, Documentation of Unavailable Samples from 12-THP-601 O-RPP-643, Quarterly Review of Radiological Environmental Monitoring Program (REMP) Data, was completed and submitted for each month of unavailable samples. By February 19th the Great Lakes Environmental Research Laboratory showed over 63% Ice coverage on Lake Michigan, greater than that of 2014; by March the ice cover was over 86%. AR 2015-6989 was written to document this program deviation.
: 2. 1/1/15 to 12/31/15: The required indicator milk samples (minimum of three) were not collected due to the retirement of farm operators and inability to locate suitable replacement farms. The milk program continued to be suspended in 2015. This has been the case since 2010. GT 00102954-01 document~ this event and the commencement of broadleaf sampling in lieu of milk. AR 2011-13312 was initiated in November of 2011 to validate the adequacy of the broadleaf sampling program. The Land Use Census, performed annually by CNP, is used to identify dairy farms. However, no new dairy farms were identified in 2015.
: 3. On 4/21/2015, ONS-1 lost power due to high winds. Power was restored on 4/21/15 4 hours and 10 minutes later. This lost time was not detrimental to the sample. 12-THP-6010-RPP-643, Data Sheet 1 of RPP-643 was completed and AR 2015-5879 was written to document the event.
: 4. On 6/21/2015, ONS-1 air station lost power for 85 minutes due to inclement weather. This lost time was not detrimental to the sample. Data Sheet 1 of RPP-643 and AR 2015-8494 were written to document the event.
: 5. No surface water samples were obtained during the first four days of April (4/1-4/4) 2015 due to ice buildup along the shore of Lake Michigan Data Sheet 1 of RPP-643 was completed and submitted and AR 2015-12891 was initiated to document this occurrence.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015
: 6. On 7/13/2015 Air Stations ONS-5 and ONS-6 lost power for 74 and 3 hours respectively, due to strong storms which downed trees. ONS-6 was quickly accessed and repaired; ONS-5 had downed trees and power lines preventing access and could not be repaired for some days (AR 2015-9116) Data Sheet 1 of RPP-643 was completed.
: 7. On 7/22/2015 Air Station ONS-1 lost power for one hour (AR 2015-9704); the cause was unknown. Data Sheet 1 of RPP-643 was completed.
: 8. On 9/1/2015 Air Station NBF lost power for 30 minutes, cause unknown (AR 2015-12005) Data Sheet 1 of RPP-643 was completed.
: 9. On 9/25/2015 during modifications to the electric lines feeding ONS-2, the backup generator set up to power ONS-2 malfunctioned. Power was restored 36 hours later (AR 2015-12957). Data Sheet 1 of RPP-643 was completed.
: 10. On Monday afternoon 10/19/2015 an email was received in which GEL notified of an error discovered by them during revision of data. It was determined by GEL that not all air particulate filters for the second quarter 2015 (Analysis ID 378032) were included in the composite sample. The laboratory revised the data to include all 13 filters from the second quarter and promptly sent the corrected results. GEL also initiated a formal investigation into their program to understand and correct the cause of this oversight. 9NP documented the occurrence and the completion and results of the investigation in AR 2015-13626. The revised results showed traces of Be-7 on all ten samples, K-40 on NBF, and Th-228 on ONS-1; all naturally occurring.
: 11. No Perch samples were collected during 2015 due to insufficient quantity within the specified area (sample must be greater than or equal to four pounds and collected within the 10 mile radius of the plant). AR 2016-0080 was written to document this program deviation.
4.2     Comparison of Achieved LL.D with Requirements Attachment 3.20 from the ODCM (Table 2.3 in this report) lists the LLDs requirements for routine environmental sample analyses. The LLD's are "a priori" (before the fact) commitments to ensure measurements meet criteria for the ability of a system to detect small amounts of radioactivity. The Minimum Detectable Concentration (MDC) is calculated by the laboratory for a given measurement. The MDC is an "a posteriori" (after the fact) evaluation that quantifies the smallest activity that can be measured with the actual sample and system parameters. The MDC is compared to the LLD to ensure compliance to the requirements is achieved. Appendix D includes flags in the far right hand margin for any occurrences of exceeded MDC's As discussed in Section 3.5.2 Bases of the ODCM, on occasion, an L,LD may not be achieved due to situations such as a low sample volume. In such a case, the ODCM requires the identification and discussion of the contributing factors in the Annual Radiological Environmental Operating Report. There were no missed LLDs in 2015.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 As discussed in Section 3.5.2 Bases of the ODCM, on occasion, an LLD may not be achieved due to situations such as a low sample volume. In s_uch a case, the ODCM requires the identification and discussion of the contributing factors in the Annual Radiological Environmental Operating Report. There were no missed LLDs in 2015.
4.3    Results Compared Against Reporting Levels ODCM Section 3.5.2 requires a discussion in the Annual Radiological Environmental Operating Report of any instance that a radionuclide concentration exceeds the reporting levels given in Attachment 3.21 (Table 2.4 in this report). Reporting Levels are the environmental concentrations that relate to the As Low as Reasonably Achievable (ALARA) design dose 9bjectives of 10 CFR 50, Appendix I. It should be noted that environmental concentrations are averaged over calendar quarters for the purposes of this comparison, and that Reporting Levels apply only to measured levels of radioactivity due to plant effluents.
No Reporting Levels were exceeded in 2015.
4.4    Data Analysis by Media Type - Discussion The 2015 REMP data for each media type are discussed below. Graphical plots of monitoring data are also shown in Figures 4.1 to 4.7.
4.4.1   Air Particulate Air particulates were collected weekly on 47 mm particulate filters at six indicator locations and four control locations, and analyzed for gross beta   ~
radioactivity. On a quarterly basis, a gamma isotopic analysis was performed on the composite of each location's weekly particulate sample
                    *media.
Figure 4.1 shows the gross beta concentrations in air particulate filters collected for the operating period of th~ past ten years. Gross beta concentrations were detectable on all particulate samples, both indicator and control locations.
There was a discernible increase in the counts at all stations starting in the middle of 2010 and continuing through 2012, as shown in Figure 4.1.
When an average AREVA E-LAB response, on a monthly basis is compared to the average GEL response, there is an average increase of approximately 40%. It should be noted that this increase was found in both control samples as well as indicators, and followed the historical trending over the course of the year. This relative increase is attributed to differences in analytical method between the AREVA E-LAB (historica*I data before the second half of 2010) and GEL, (since the second half of 2010 through 2015). The reason for the step increase is related to the change in the gross beta counting equipment configurations and reference calibration standards used by the AREVA lab and GEL. Both labs use(d) gas proportional counting of the filter element. However, AREVA applied a Cs-137 calibration source while the GEL uses a Tc-99 calibration source. In the case of the AREVA data record, the Cs-137 Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 AREVA applied a Cs-137 calibration source while the GEL uses a Tc-99 calibration source. In the case of the AREVA data record, the Cs-137 detection efficiency (approximately 34%) was applied to the "gross" counts to determine the apparent activity. This inherently presumes that the radioactivity in a field sample is all Cs-137. In the case of the GEL data record, the Tc-99 efficiency (21 %) is applied to the same "gross" counts as if the entire radioactivity in this case is Tc-99. The end result is two different gross beta radioactivity determinations for the same level of environmental activity. In application, this is not an adverse condition in that the gross beta counting is used as a qualitative indicator of changes in environmental conditions, not as a quantitative measure of the actual radioaGtivity since the comparison of the response curves for each monitoring station, including the control station, are similar over time, and the curves indicate that there is no detectable influence from a single nearby point source such as the CNP.
It can be seen in Figure 4.1 that the annual average gross beta air particulate counts from 2012-2013 and from 2013-2014 exhibit a 20%
decrease in both indicator and control locations, each year. No plant related radionuclides were detected on the air particulate composite filters indicating that the changes in the gross beta activity is likely due to
* naturally occurring radionuclides. Air particulate activity sampling can depend upon local weather conditions, global weather patterns as well as sampling methodology. Possible sources of this change to average trend line could be:
* Unusually harsh weather conditions experienced locally which would lock potential airborne radioactivity in frozen soil or under snow,
* Changes (increases) in the local average rainfall which would reduce the amount of airborne particulates.available to influence the air particulate samples,
* Changes in global weather patterns effecting transportation of suspended airborne particulates and deposition due to washout mechanisms, or
* A decrease in the source of manmade background sources, such as past atmospheric nuclear weapons testing or nuclear accidents such as those at Fukushima Daiichi.
Notable in the graph, *shown in Figure 4.2, is a distinct annual cycle. The gross* beta concentrati_on fluctuations over the year were attributed to seasonal changes in the naturally-occurring airborne radioactivity levels.
_,..,This conclusion was based on the similarity in fluctuations noted in gross beta concentrations at both the indicator stations and control stations.
Results for gamma isotopic analyses performed on quarterly composites of the weekly particulate samples have been listed in Table 3.1. The presence of naturally-occurring Be-7 was detected in all of the indicator and control samples. The presence of naturally-occurring Th-228 was Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 detected in one indicator sample, and the presence of naturally-occurring K-40 was detected in one control sample. No other radionuclides were detected in the quarterly composites of the weekly air particulate samples.
Full details of all measurements can be found in Appendix D.
In summary, the information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's "Pre-Operational Radiological Monitoring Program" (PRMP) [see Appendix E] . Also , no significant difference was noted between the average monthly gross beta concentration at the indicator and the control stations. Therefore , the results were not due to plant operations.
Figure 4.1 Mean Annual Gross Beta Concentration in Air Particulate Samples Collected over 10 Years 50.0
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No Iodine was detected above the MDC in 2015.                      Full details of all measurements can be found in Appendix D.
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP.
4.4.3 Groundwater (Well)
Groundwater samples were collected from seventeen well locations on a quarterly frequency and analyzed for gamma isotopic and tritium [See Table 3.1].
The presence of naturally-occurring K-40 was identified in one sample and naturally-occurring Th-228 was identified in two out of sixty-eight samples [See Table 3.1].                       The presence of K-40 and Th-228 in Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 groundwater samples is attributed to natural occurrences since they are not fission or activation products related to plant operations.
Tritium was not detected above the associated MDC in any 2015 groundwater sample.
Figure 4.3 and 4.4 plot the measured activity of tritium , when detected at levels above the MDC. For years where no tritium was detected above the MDC, no values were plotted.
While ground water sampling was not performed as part of CNP's PRMP, the information detailed above was evaluated and found to be consistent with data obtained during the plant's operational history. Therefore, the 2015 results were not due to plant operations.
Donald C. Cook Nuclear Plant                                        Annual Radiological Environmental Operating Report 2015 Figure 4.3 Tritium Detected in Groundwater Over the Past 10 Years 20,000 +..-----------------~--~~~~~~~~~~~ Reporting Level
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                  .}an-06     .}an-07  .}an-OS       .}an-09        .ian-'\O     .}an*'\'\     .)an-'\'2      .}an*'\~     .}an *'\ 4    .}an-'\ 5     .}an-'\ 6 Sample Date Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 4.4.4  Drinking Water Drinking water samples were collected daily from one indicator and one control station . A 14-day composite was analyzed for gamma isotopic and gross beta radioactivity. A quarterly composite was analyzed for tritium.
A specific lodine-131 low-level analysis performed on all samples indicated that no lodine-131 was present.
Figure 4.5 shows a plot of the tritium data going back twelve years . Only measurements that were detected at levels above the MDC were plotted.
No tritium was detected in drinking water samples in 2015 [See Table 3.1].
During 2015, the presence of gross beta radioactivity was not identified in any indicator or control samples. Two indicator samples contained naturally-occurring K-40 . [See Table 3.1 and Appendix DJ.
One control sample detected Thorium-228 . The presence of Th-228 in the drinking water sample is attributed to natural occurrences since it is not a fission or activation product related to plant operations.
No other gamma-emitting nuclides were identified in any 2015 samples .
While drinking water sampling was not performed as part of CNP's PRMP, the information detailed above was evaluated and found to be consistent with data obtained during the plant's operational history.
This information supports the conclusion that these occurrences were not attributable to plant operations.
Donald C. Cook Nuclear Plant                       Annual Radiological Environmental Operating Report 2015 Figure 4.5 Tritium Detected in Drinking Water Over the Past 12 Years Reporting Level
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Ja"..()4 Ja"..os Ja"..06 Ja"..01 Ja"..os Ja"..09 Ja"*"o Ja"*"" Ja"*"l Ja"*"3 Ja"*"* Ja"*"s Ja"*'\6 Sample Date 4.4.5    Surface Water Surface water samples were collected daily from two indicator locations, when available (See section 4.1 for sampling deviations) . Monthly composites were analyzed for gamma-emitting radionuclides and quarterly composites were analyzed for tritium . No tritium or gamma emitting radionuclides were detected above the MDC in any
* of the samples collected in 2015 [See Table 3.1].
The information detailed above was evaluated and found to be consistent with data obtained during past operational periods and the conduct of CNP's PRMP. There was no impact to this sample medium from plant operations in 2015.
4.4.6    Sediment Semiannual samples of lake sediments were collected from two indicator stations and analyzed for gamma-emitting nuclides.                           During 2015, naturally-occurring K-40 was detected in all four samples and Th-228 was detected in three sediment samples. Additionally, two samples contained Ac-228. These radionuclides are expected as part of the naturally-Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 occurring thorium decay series. No other gamma-emitting nuclides were detected in any of the samples collected in 2015. Unlike many past operational and pre-operational periods where traces of Cs-137 were found , no detectable Cs-137 was identified in 2015 samples [See Table 3.1).
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP and the presence of naturally-occurring radionuclides (K-40 and Ac!Th-228) was not attributed to plant operation.
4.4.7  Milk Milk samples were not collected during 2015, as milking operations ceased at the indicator farm (Shafer) in September 2014, and at the control farm (Livinghouse) in October 2014.
Condition Report 04351048 and AR 2011 -13312-1 had previously been written to document the milk farm events and to validate the adequacy of the broadleaf and milk sampling process.
4.4.8  Food Products & Vegetation Vegetation samples (broadleaf) analyzed for gamma-em itting nuclides identified the presence of naturally-occurring Be-7 and K-40 in all samples from both indicator and control locations. One indicator station sample contained Th-228, a daughter of the naturally occurring Ac-228.
Three indicator samples contained trace levels of Cs-137. The indicator samples ranged from 18.0 to 28.6 pCi/kg [See Table 3.1). ARs 2015-9219 and 2016-0077 were written to document the occurrences for tracking purposes. Although the presence of Cs-137 is consistent with historical data, pre-operational samplings of broadleaf media were not collected before CNP construction . The historical results for this media indicate that the presence of Cs-137 could be the result of atmospheric weapons testing . The presence of Cs-137 was noted in 2011 after the Fukushima disaster. AR 2011-4952 was written in response to the 2011 samples. The Cs-137 detected is not considered to be a result of CNP gaseous effluents, as this result is consistent with historical data, and there were no Cs-137 releases from 2010 through 2014, with only one ten (10) minute release containing Cs-137 in 2015.
One annual sample of food products (grapes) each from an indicator and a control location was analyzed for gamma-emitting nuclides. Analysis identified only the presence of naturally-occurring K-40 and Be-7 [See Table 3.1] in both indicator and control samples. While food product sampling was not performed as part of CNP's PRMP, the information detailed above was evaluated and found to be consistent with data obtained during the plant's operational history. The presence of the naturally-occurring detected radionuclides was not attributed to plant operations.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 4.4.9   Fish REMP Fish samples were collected on two occasions at two indicator and two control locations. Naturally-occurring K-40 was detected in all the samples. Trace levels of Cesium-137 were observed in three indicator and two control samples [See Table 3.1 ]. Additionally, non-RE MP perch, salmon, and trout sampling was initiated in the third quarter of 2011. One of the two non-REMP indicator samples (salmon) had a trace level of Cs-137 (16.7 pCi/kg) and both samples had naturally occurring K-40. ARs 2015-12765, 2015-11188 and 2016-4475 were written to document the occurrences for trending purposes.
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP and during the plant's operational history. With the historical detection of similar trace levels of radioactivity in both the indicator and control samples, the presence of the detected radionuclides was not attributed to plant operation.
4.4.10 Gamma Exposure Rate Direct radiation was continuously measured at 27 locations surrounding CNP with TLDs. All TLDs were collected quarterly and processed by Stanford Dosimetry at the Environmental Dosimetry Company laboratory in Sterling, Massachusetts.
The results in Tables 3.2 and 3.3 show that the mean exposure rates for the onsite and offsite categories were not significantly different in total for 2015. As shown in Figure 4.6, there is a similar annual cycle at both onsite and offsite locations. The lowest point of the cycle typically occurred during the winter months. This is attributed primarily to the attenuating effect of the snow cover and frozen ground on radon emissions and on direct irradiation by naturally-occurring radionuclides in the soil. Also contributing to the variation in radiation levels at different field sites was the varying distribution of radionuclides in the underlying soil, rock or nearby building materials. Figure 4.7 illustrates that the average trend line over the last ten years for the offsite stations runs slightly higher than that for the onsite stations, suggesting that there is no detectable plant component of direct radiation that can be seen above the natural background exposure rate .
In July 2010, the Environmental Dosimetry Company assumed responsibility for calibration and processing of the TLDs used for these activities. The Panasonic Model UD-814 AS4 TLDs that had historically been used to measure direct radioactivity around CNP continued to be in use.
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Figure 4.6 Direct Radiation - Quarterly TLD Results 12.0
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Groundwater (Radioactive Equipment Storage Facility, Steam Generator wells) - Two one-liter well water samples were taken at 4 locations quarterly. These samples were analyzed for tritium by GEL. The samples are also analyzed for gamma, gross beta, and gross alpha for tracking purposes [see Appendix D] . Measured tritium activities in the samples were all found to be less than the MDC . No plot for this data was possible because since 2007, there has been no positive identification of tritium in the wells SG-1 through SG-5. Tritium in these wells is also being tracked by the CNP Groundwater Protection Initiative and is discussed further in Appendix F.
Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 5.0    OFF-SITE DOSE EQUIVALENT COMMITMENTS
      *The purpose of this section is to evaluate off-site dose consequences (dose equivalent commitments) associated with CNP radioactive liquid and airborne effluents. The method utilizes Regulatory Guide 1.109/0DCM models and actual measurements of the concentrations of radioactivity in environmental media to compute the dose consequences resulting from the consumption of these foods. The doses are based on an assumption that the individuals consume fish or broadleaf vegetation year round at the respective average Cs-137 concentrations determined during 2015. The maximum consumption rates from Regulatory Guide 1.109 are also assumed, although the consumption fraction was conservatively assumed to cover the entire time period in which Cesium was measured in the broadleaf samples.
The dose commitments calculated in this section are compared to the ALARA dose objectives of 10 CFR 50 Appendix I for liquid and/or gaseous effluents. These standards are a fraction of the average USA background radiation of 300 mrem per year given iri NCRP 94 (Reference 2).
Trace levels of Cesium-137 were detected in five REMP fish samples (Table 3.1) and one non-REMP fish sample and are detailed in Table 5.1 and dose summarized in Table 5.3. The concentrations ranged from 7.02 to 22.6 pCi/kg, all of which are well below the required LLD of 150 pCi/kg. The presence of this radionuclide was determined to not be the result of operations at the CNP. Given that, the dose impacts from ingestion of the*
radionuclide yielded a maximum dose of 2.23E-02 mrem/year total body (for the adult age group) and 3.54E-02 mrem/year to the liver (for the teen age group). This represents 0.74% and 0.35% of the total body and organ dose objectives of 10 CFR 50 Appendix I (3 mrem/yr and 10 mrem/yr, respectively).
Table 5.1: Cs-137 Concentration in Fish Samples Concentration Media      Station       Sample                       Date (pCi/kg)
Fish      OFS-N       374475001          14.3       6-3-15 Fish*     ONS-N       374475002          7.02       6-3-15
                 , Fish      ONS-S       374475003          20.9       6-3-15 Fish      OFS-N       377953001          7.58      7-23-15 Fish      ONS-N'      377953002          22.6      7-23-15 Fish    SLM5WNW 377393001                16.7      7-16-15 Trace levels of Cesium-137 were detected in three broadleaf vegetation samples (Table 3.1) and are detailed in Table 5.2 with doses summarized below in Table 5.3. The concentrations ranged from 18.0 to 28.6 pCi/kg, all of which are well below the required LLD of 60 pCi/kg. The presence of this radionuclide was determined to not be the result of operations at the CNP and none of the samples were from plants that are commonly eaten. Given that, the dose impacts from ingestion of the radionuclide yielded a total body dose of 2.75E-02 mrem/year (for the adult age group) and total critical organ dose of 5.11 E-02 mrem/year to the bone (for the child age group). This represents 0.55% and 0.34% of the total body and organ dose objectives of 10 CFR 50 AppE?ndix I (5 mrem/yr and 15 mrem/yr respectivel_y).
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Table 5.2: Cs-137 Concentrations in Broadleaf Samples Concentration Media       Station      Sample                         Date (pCi/kg)
Broad leaf  ONS3-V 377009001               25.5         7-10-15 Broad leaf  ONS3-V 381112003               28.6         9-11-15 Broad leaf  ONS1-V 375227004               18.0         6-15-15 Average                              24.0 Table 5.3, below, summarizes each of the dose commitments calculated for each of the media, that had positive results for radionuclides that are not naturally occurring.
Table 5.3: Summary of Off-Site Dose Commitments Limiting Organ    Organ Dose      Whole Body Dose Media     Radionuclide
[age group]      (mrem/yr)         (mrem/yr)
Fish         Cs-137        Liver [Teen]      3.54E-02          2.23E-02 Broad leaf      Cs-137        Bone [Child]      5.11E-02          2.75E"'.02 Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating* Report 2015
(
6.0      

==SUMMARY==
OF REMP, ODCM, AND VENDOR PROCEDURE CHANGES The ODCM was revised in 2015; changes to the ODCM are documented in the following table.
Procedure No.:      PMP-601 O-OSD-001                                     Rev. No.:      25

==Title:==
Off-Site Dose Calculation Manual Alteration                                         Justification 10 CFR 50.59 is not applicable to this             Per definition in Attachment 1 of PMP-2010-procedure revision.                                PRC-002. This is an administrative procedure .
governing the conduct of fac,;ility operations.
Changes to this document are made in accordance with Technical Specification 5.5.1 and implemented through 12-EA-6090-:ENV-114, Effectiveness Review for ODCM/PCP Programs.
Step 2.1.2.j: Added supplemental information       Enhancement to provide clarity on the of the calculation of dose attributed to carbon-   variables that would be utilized for calculating
: 14.                                                C-14 dose. (AR #2015-1439)
Step 2.1.2.k.3: Added usage of installed           Enhancement which reflects the installation of blowdown flow instrumentation as an                modern technology allowing for more accurate acceptable method for obtaining flows.             flow measurements of blowdown. The data are obtainable on the Plan~ PPG computers.
This change does not involve a change of procedural intent and reflects an improvement in measuring flows.
Step 2.4.1: Added specific mention of the dry      Enhancement to ensure it is clearly understood cask storage facility (ISFSI) and the need to      that the direct radiation dose to the public is a incorporate the dose from it with our dual unit    combination of that from our dual unit site and site data.                                         the dry cask storage facility operated under a separate license. (AR #2015-1439)
Step 2.7.2: Revised verbiage throughout the        Enhancement which clarifies the deadline to step to change wording from "by May 1" to          provide the NRG the ARERR, based upon .
  "prior to May 1."                                  industry operating experience. This change does not involve a change of procedural intent.
(AR #2015-1439)
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Opei.:ating Report 2015 Alteration                                       Justification Attachment 3.19: Corrected distance              NUREG 1301 uses kilometers and an error referenced and made clarification of the sector was made where the unit conversion from criteria where broadleaf sampling was            kilometers to miles did not converfthe actual required, reflecting NUREG 1301 more             number but only the unit. The value of 8 accurately.                                      kilometers  equals 5 miles. Adjusted the broadleaf distances to approximate mile equivalents of NUREG 1301 guidance given kilometers.
The clarification on the broadleaf sampling involved and NRG Branch Technical Position having different verbiage than NUREG 1301.
The previous revision reflected .the verbiage from the Branch Technical Position. The change made here reflects the verbiage in NUREG 11301 and clearly states that samples from two different sectors with the highest D/Q are required. This does not involve a change in procedural intent and simply clarifies the process of broadleaf sample. (AR #2015-1861)
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 The following changes were made to the REMP procedures in 2015:
Procedure No.:       12-THP-6010-RPP-630
                    ~~~~~~~~~~~~~~~~~-
Rev. No.:     8 Tit Ie:               Collection of REMP Surface Water Samples Alteration                                       Justification Removed Data Sheet 1, Documentation of            Per QHSA recommendation GT 2014-10583-1.
Unavailable Samples, and Pata Sheet 2, D.C.       These Data Sheets have been moved to 12-Cook Nuclear Plant Sample Collection Data         THP-RPP-643, Quarterly Review of Sheet.                                            Radiological Environmental Monitoring Program (REMP) Data.
Step 3.2: Added procedure reference for 12-       Clearly identify location of where Data Sheet 1 THP-601 O-RPP-643 Data Sheet 1.                   has been moved.
Step 4.1.2: Added procedure reference for         Clearly identify location of where Data Sheets 12-THP-6010-RPP-643 Data Sheets 1 and 2.          1 and 2 have been moved.
Step 4.3: Last bullet, added procedure            Clearly identify location of where Data Sheet 2 reference for 12-THP-601 O-RPP-643 Data           has been moved.
Sheet 2.
Step 4.4.5: Added procedure reference for         Clearly identify location of where Data Sheet 2 12-THP-6010-RPP-643 Data Sheet 2.                 has been moved.
Step 4.4.6: Added procedure reference for         Clearly identify location of where Data Sheet 2 12-THP-6010-RPP-643 Data Sheet 2.                 has been moved.
Step 6.3: Added procedure reference for 12-       Clearly identify location of where Data Sheet 1 THP-601 O-RPP-643 Data Sheet 1.                   has been moved.
Added Reference 7.1.2, 12-THP- RPP-643,           References are made within the body of Quarterly Review of Radiological                  procedure due to moving Data Sheets to 12-Environmental Monitoring Program (REMP)           THP- RPP-643.
Data.
Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Procedure No.:       12-THP-60*10-RPP-632                              Rev. No.:     11

==Title:==
Collection of Environmental Air Samples Alteration                                    Justification Step 2.3: Changed reference location of Data Corrected reference due to moving Data Sheet 2, D.C. Cook Nuclear Plant Sample          Sheets from 12-THP-6010-RPP-630 to 12-Collection Data Sheet.                           rrHP--601 O-RPP-643.
Step 3.2: Changed reference location of Data Corrected reference due to moving Data
 . Sheet 1', Documentation of Unavailable           Sheets from 12-THP-6010-RPP-630 to 12-Samples.                                         THP-601 O-RPP-643.
Step 4.1.3: Changed reference location of .      Corrected reference* due to moving Data Data Sheet 1, Documentation of Unavailable       Sheets from 12-THP-6010-RPP-630 to 12-Samples, and Data Sheet 2, D.C. Cook             THP-601 O-RPP-643.
Nuclear Plant Sample Collection Data Sheet.
Step 4.4.2: Changed reference- location of
* Corrected reference due to moving Data Data Sheet 2, D.C. Cook Nuclear Plant            Sheets from 12-THP-6010-RPP-630 to 12-Sample Collection Data Sheet.                    THP-601 O-RPP-643.
Step 4,4.3: Changed reference location of
* Corrected reference due to moving Data Data Sheet 2, D.C. Cook Nuclear Plant          *Sheets from 12-THP-6010-RPP-630 to 12-Sample Collection Data Sheet.                    THP-601 O-RPP-643.
Step 6.1 : Changed reference location of Data Corrected reference due to moving Data Sheet 2, D.C. Cook Nuclear Plant Sample          Sheets from 12-THP-6010-RPP-630 to 1.2-Collection Data Sheet.                           THP-601 O-RPP-643.
Updated Use Reference 7.1.2 to 12- THP--         Corrected reference due to moving Data 601 O-RPP-643.                                    Sheets from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643'.
Removed all information regarding the AVS- Per SME recommendation.
100 totalizers that are no longer used. These changes are not margin-marked.
* Donal~   C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Procedure No.: ' 12-THP-601 O-RPP-633                                 Rev. No.:     7

==Title:==
Collection of Environmental Radiation Dosimeters Alteration                                   Justification Step 2.3: Updated procedure referenced from Changed location of the referenced Data 12-THP-6010-RPP-630 to 12-THP-6010-RPP- Sheets per OHSA recommendation, GT 2014-643 for Data Sheet 2.                           10583-1.
Step 3.2: Updated procedure referenced from Changed location of the referenced Data 12-THP-6010-RPP-630 to 12-THP-6010-RPP- Sheets per OHSA recommendation, GT 2014-643 for Data Sheet 1.                           10583-1.
Steip 4.1.3: Updated procedure referenced       Changed location. of the referenced Data from 12-THP-6010-RPP-630 to 12-THP-6010- Sheets per*OHSA recommendation, GT 2014:.
RPP-643 for Data Sheets 1 and 2.                10583-1.
Steip 4.2.4: Updated procedure referenced       Changed location of the referenced Data from 12-THP,.6010-RPP-630 to 12-THP-6010- Sheets per OHSA recor:nmehdation, GT 2014-RPP~643 for Data Sheet 2.                       10583-1.
Step 4.2.6: Updated procedure referenced        Changed location of the referenced Data from 12-THP-6010-RPP-630 to 12-THP-6010- Sheets per OHSA recommendation, GT 2014-RPP-643 for Data Sheet 2.                       10583-1.
Step 4.2.7: Updated procedure referenced        Changed location of the referenced Data from 12-THP-6010-RPP-630 to 12-THP-6010- Sheets per OHSA recommendation, GT 2014-RPP-643 for Data Sheet 2.                       10583-1 .
 .Step* 6.3: Updated procedure referenced from Changed location of the referenced* Data 12-THP-6010:.RPP-630 to 12-THP-6010-RPP- Sheets per OHSA recommendation, GT 2014-643 for Data Sheet 1.                           10583-1.
Step 7 .1.2: l)pdated Use Reference to 12-      Changed location of the referenced Data THP-RPP-643, Quarterly Review of                Sheets per OHSA recommendation, GT 2014-Radiological Environmental Monitoring           10583-1.
Program (REMP) Data.
Updated Attachment *3 referenced Data Sheets Changed location of the referenced Data 1 and 2 to 12-THP-RPP--643. .                   Sheets per OHSA recommendation, GT 20t4-10583-1.
Revision Summary, added 10CFR50.59              SMR recommendation.
statement bf applicability.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Procedure No.:     12-THP-6010-RPP-634                            Rev. No.:     13

==Title:==
Collection of REMP Groundwater Samples Alteration
* Justification Step 3.4: *updated Use Reference to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.1.2: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.4.3: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.5.4: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.5.5: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.8.4: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.9.1: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           *his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.9.2: Updated Note to reference PMP- Per*QHSA recommendation GT 2014-10583, 3130-SMC-005 for Data Sheet 1, Shipping      !his moved Data Sheets 1 and 2 from 12-THP-Memorandum.                                  601 O-RPP-630 to 12-THP-601 O-RPP-643 Correct Use Reference.
Step 6.1: Updated Use Reference to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Reference - Updated Use Reference 7.1.2 to Correct User Reference.
PMP-3130-SMC-005 . .,
Reference - Updated Use Reference 7.1.3 to* Per QHSA recommendation GT 2014-10583, 12-THP-6010-RPP-643, Quarterly Review of ~his moved Data Sheets 1 and 2 from 12-THP-Radiological Environmental Monitoring        6010-RPP-630 to 12-THP-6010-RPP-643.        I Program (REMP) Data. .
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-601 O-RPP-635                              Rev. No.:       6

==Title:==
Collection of Milk Samples Alteration
* Justification Step 3.2, Changed use procedure 12-THP-       Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2
                                                ~ram 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.1.1, Changed use procedure _12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 Wrom 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.1.2, Changed use procedure 12-THP- Per OHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 Wrom 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.2.3, Changed use procedure 12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2
                                                ~ram 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.2.4, Changed use procedure 12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.3.1, Changed use procedure 12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 ram 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.                              .
Step 6.1, Changed use procedure 12-THP-        Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 ram 12..THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 6.2, Changed use procedure 12-THP-        Per OHSA recommendation from GT 2014-6010-RPP-643.                                  10583. Moved Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Use Reference 7.1.3 changed to 12-THP-         Per QHSA recommendation GT 2014-10583, 601 O-RPP-643, Quarterly Review of             this moved Data Sheets 1 and 2 from 12-THP-Radiological Environmental Monitoring          6010-RPP-630 to 12-THP-6010-RPP-643.
Program (REMP) Data.
Attachment 1 under Indicator Farms - deleted No longer available. These farmers have Shafer and Livinghouse Farms.                  recently retired. This is a correction per PMP-Attachment left blank for future use.          2010-PRC-002. (AR 2014-11607)
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-636                             Rev. No.:     5

==Title:==
Collection of Fish Samples Alteration                                   Justification Step 3.2: Changed Use Procedure to 12-THP Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                  this moved Data Sheets 1 and.2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.1.2: Changed Use Procedure to 12-        Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                              ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.2.4: Changed Use Procedure to 12-       per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                              ~his moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.3.1: Changed Use Procedure to 12-        Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                               his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 6.1: Changed Use Procedure to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                  ~his moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 6.2: Changed Use Procedure to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                  ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Use Reference 7.1.2 updc;ited to 12-THP-6010 Per QHSA recommendation GT 2014-10583, RPP-643, Quarterly Review of Radiological       this moved Data Sheets 1 and 2 from 12-THP-Environmental Monitoring Program (REMP)         601 O-RPP-630 to 12-THP-601 O-RPP-643.
Data.
Deleted Figure 1                                Per SME recommendation. Procedure enhancement, figure was outdated.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-637                                 Rev. No.:     8

==Title:==
Collection of REMP Lake Se,diment and Soil Samples Alteration                                 Justification Step 3.3, Updated Use reference to         Per OHSA recommendation from GT 2014-12-THP- 6010-RPP-643.                      10583 to move Data Sheet 1 and Data Sheet 2 from 12:.THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 3.4, Updated Use reference to         Per QHSA recommendation from GT 2014-12-THP- 6010-RPP-643.                      10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 3.5 Changed wording from              eSAT is the old CAP. Allows for ease of use.
   "initiate an eSAT report" to "initiate a Condition Report" Step 4.1.2, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                     10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.2.4, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                     10583 to rriove Data Sheet ,1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-
           <                                  601 O-RPP-643.
Step 4.2.6, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-6010-RPP-643.                      10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step4.2.8, Updated Use reference to        Per QHSA recommendation from GT 2014-12-THP-6010-RPP-643.              -        10583 to move Data Sheet 1 and Data Sheet 2 from-12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.3.7, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                     10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.4.4 Changed eSAT to                 eSAT is the old CAP. Allows for ease of use.
Condition Report.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Alteration                                  Justification Step 6. 1, Updated Use reference to 12-     Per QHSA recommendation from GT 2014-THP- 601 O-RPP-643.                         10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-
* 601 O-RPP-643.
Use Reference 7.1.3, Updated to 12-         Per QHSA recommendation from GT 2014-THP- 601 O-RPP-643, Quarterly Review o      10583 to move Data Sheet 1 and Data Sheet Radiological Environmental Monitoring       2 from 12-THP-6010-RPP-630 to 12-THP-Program (REMP) Data.                        601 O-RPP-643.
Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Procedure No.:     12-THP-6010-RPP-637                           Rev. No.:     9

==Title:==
Collection of REMP Lake Sediment and Soil Samples Alteration                                 Justification Updated Use Reference 7.1.2 to currently    Old MMD reference no longer exists.
used reference.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-638                             Rev. No.:     8

==Title:==
Collection of Grape and Broadleaf Samples Alteration                                   Justification Step 3.1, Updated Use Reference to           . Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                         10583 that moved Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-Step 4.1.2, Updated Use Reference to           THP-601 O-RPP-643.
12- THP-601 O-RPP-643.
Step 4.2.5, Updated Use Reference to 12- THP-601 O-RPP-643.
Step 4.2.6, Updated Use Reference to 12- THP-6010-RPP-643.
Step 4.3.1, Updated Use Reference to 12- THP-601 O-RPP-643.
Step 6.1, Updated Use Reference to 12- THP-601 O-RPP-643.
Updated Use Reference 7.1.3, 12-THP- 601 O-RPP...:643, Quarterly' Review of Radiological Environmental Monitoring Program (REMP) Data.
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-601 O-RPP-638                                Rev. No.:     9

==Title:==
Collection of Grape and Broadleaf Samples Alteration                                      Justification Steps 4.2 through 4.2.5: Revised verbiage in Per industry SME recommendation, procedural this section of the procedure to reflect recent ~nhancements have been made to more changes to NUREG 1301.                           accurately reflect the recent changes to NUREG 1301 for environmental sample. See AR 2015-1861 for detailed clarification.
Donald C. Cook Nuclear Plant      Annual Radiological Environmental Operating Report 2015 Pr9cedure No.:    12-THP-6010-RPP-640                          Rev. No.:     7

==Title:==
Land Use Census Alteration                                 Justification Step 3.2: Revised wording.                Per AR 2015-1861-2, change made to match the ODCM verbiage in PMP-6010-0SD-001.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-642                              Rev. No.:     8

==Title:==
Collection of Drinking Water Samples Alteration                                   Justification Step 3.2: Changed Use Procedure to 12-THP-Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                   ~his moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.1.2: Changed Use Procedure to 12-         Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.4.1: Changed U&e Procedure to 12-       'Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                              .~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.4.3: Changed Use.Procedure to 12-         Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010~RPP-630  to 12-THP-6010-RPP-643.
Step 6.1: Changed Use Procedure to 12-THP-Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                   ~his moved Data Sheets 1 and 2 from 12-TH.P-
* 6010-RPP-630 to 12-THP-6010-RPP-643.
Step 6.4: Changed Use Procedure to 12-THP-Per QHSA recommendation GT 2014-10583,.
601 O-RPP-643.                                   this moved Data Sheets 1 and 2 from 12-THP-
                                               . 601 O-RPP~630 to 12-THP-6010-RPP-643.
Use Reference 7.1.1 updated to 12-THP-601 o Per QHSA recommendation GT 2014-10583, RPP-643, Quarterly Review of Radiological        this moved Data Sheets 1 and 2 from 12-THP-Environmental Monitoring Program (REMP)          601 O-RPP-630 to 12-THP-601 O-RPP-643.
Data.
Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-643                               Rev. No.:     9

==Title:==
Quarterly Review of Radiological Environmental Monitoring Program (REMP) Data Alteration                                      Justification Updated TOC to include changing Data Sheet Per Supervisor's recommendation.
1 to Data Sheet 3, REMP Quarterly Data Review.
Added Data Sheet 1, Documentation of            Per OHSA recommendation from GT 2014-
 .Unavailable Samples, and Data Sheet 2, D.C. 10583-2.
Cook Nuclear Plant Sample Collection Datc;i Sheet.
Step 2.1: Removed the old procedure             Procedural clarification.
reference to reflect changes to current procedure:
* Step 3.1: Updated the Data Sheet number         To reflect the correct Data Sheet usage.
from Data Sheet 1 to Data Sheet 3.
Step 4.1: Updated the Data Sheet number         To reflect the correct Data ~heet usage.
from Data Sheet 1 to Data Sheet 3.
Step 4.4.3: Updated the Data Sheet number To reflect the correct Data Sheet usage.
from Data Sheet 1 .to Data Sheet 3.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 There was one revision to procedures for the Environmental Dosimetry Company in 2015.
Procedure No.:      1052
                   ~~~~~~~~~~~~~~~~~~~
Rev. No.:       1

==Title:==
Panasonic TLD Badge Assignment Alteration                                     Justification Editorial change only                           Due to review cycle only - no technical changes made.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 Table 6.1 below summarizes the changes made by GEL to the procedures that are used for the Donald C. Cook Nuclear Plant REMP.
* Table6.1 GEL Laboratories, LLC Updated Procedures for Support of Nuclear Power Plants Calendar Year 2015 l~sue        DIRR Sop#            Rev                         Sop Title Date         Type Preparation, Authorization, Advance Change, GL-ADM-E-001          17     Revision, Release, and Retirement of Standard      9-Apr-15   Revision Operating Procedures
. G~-CHL-B-016           2     PNNL Monthly Records Checklist                   20-Nov-15    Change Alpha Spec Instrument Calibration Package GL-CHL-B~026           0                                                        21-Jul-15  Revision Review Checklist
                              *Alpha Spec Instrument Calibration Package GL-CHL-B-026           1                                                        6-Aug-15   Revision Review Checklist GL-CHL-B-027           1     Bioassay Sample Receipt and Review Form           26-Feb-15   Change GL-CHL-RAD-015       *o      Recounts Ra-226 Checklist                         28-Ja.n-15  Deletion SHAW Ra-226 Manual Calculation Verification GL-CHL-RAD-017         1                                          J 28-Jan-15   Deletion Checklist Radiation and Contamination Survey Review GL-CHL-RAD:022         0                                                       19-Feb-15   Deletion
* Tracker, GL-CH L-RAD-024 ,      7     Sealed Source Leak Check Tracker Checklist        19-Feb-15   Deletion GL-CHL-SR-001          0     Sample Receipt and Review Fo.rrr:i
* 11-Mar-15. Revision GL~CHL-SR-001          1     Sample Receipt and Review Form                   26-Aug-15    Revision internal Review of Contractually Required GL-CS-E-002            8                                                        8-Apr-15   Revision Quality Criteria for Client Package Delivery  ,,
GL-CS-M-001            6     Project Management AlphaLIMS Manual                15-JLil-15 Revision GL-DC-E-001*          16     Doc*ument Control                                 22-Jun-15   Revision GL-FS-E-005            0     CME"45 B Drilling Rig                             28-Apr-15   Deletion GL-FS-E-006            2     Hydrolab Datasonde 4a Operation                   28-Apr-15   Deletion GL-GC-E-011           12     Total Solids                                     24-Mar-15    .Revision Carbonaceous Biochemical Oxygen Demand GL-GC-E-028           21                                                      13-May-15    Revision (CBOD)
Carbonaceous Biochemical Oxygen Demand GL-GC-E-028           22                                                       14-Sep-15. Revision (CBOD)
Alkalinity: Total, Bicarbonate, Carbonate, GL-GC-E-033           11                                                       25-Sep-15   Revision Hydroxide, and Phenolphthalein Fecal Coliform Most Probable Number GL-GC-E-034           10                                                      25-Mar-15    Deletion (Colilert-18 Quanti-Tray)
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Issue       DIRR Sop#          Rev                        Sop Title Date        Type GL-GC-E-035         11     Volatile Suspended Solids                       2'9-Apr-15  Change Colorimetric Determination of Hexavalent GL-GC-E-044         19                                                     25-Feb-15   Revision Chromium Colorimetric Determination of Hexavalent GL-GC-E-044         20                                                      7-Apr-15   Revision Chromium GL-GC-E-045         23     Biochemical Oxygen Demand {BOD)                13-May-15    Revision GL-GC-E-045         24     Biochemical Oxygen Demand (BOD)                 15-Sep-15   Revision GL-GC-E-047         15     Methylene Blue Active Subst.ance                17-Feb-15   Revision GL-GC-E-047         16     Methylene Blue Active Substance                  8-Apr-15   Revision GL-GC-E-047         17     Methylene Blue Active Substance                26-Aug-15    Revision GL-GC-E-047         18     Methylene Blue Active Substance                 29-Sep-15   Revision Heating Value Determination by Bomb GL-GC-E-048          8                                                      6-Apr-15   Change Calorimeter Heating Value Determination by Bomb GL-GC-E-048          9                                                      3-Jun-15   Revision Calorimeter GL-GC-E-050         12     Threshold Odor                                 11-Nov-15    Revision Volatile Solids and% Ash Procedure for Water GL-GC-E-057          9                                                    24-Mar-15    Revision Samples Chemical Oxygen Demand (COD) - Digestion GL-GC-E-061         18                                                     13-Apr-15   Revision Reactor Method Total Coliform and E.coli by Most Probable GL-GC-E-063          8     Number and Presence/Absence (Colilert and      25-Mar-15    Deletion Colilert Quanti-Tray)
GL-GC-E-067         19     Cyanide Sample Distillation                     27-Jan-15   Revision GL-GC-E-067         20     Cyanide Sample Distillation                    17-Mar-15    Revision GL-GC-E-082         11     Acid-Soluble Sulfides                           25-Sep-15   Revision GL-GC-E-086         23     Ion Chromatography (IC}                        19-Mar-15    Revision GL-GC-E-086         24     Ion Chromatography (IC}                        22-Dec-15    Change GL-GC-E-090          9     Acidity                                        14-Aug-15    Revision GL-GC-E-090         10     Acidity                                         25-Sep-15   Revision Total, Total Inorganic, and Total Organic GL-GC-E-093         12     Carbon {TOC) Using the 01 Analytical Model         1-Jul-15 Revision 1010 TOC Analyzer GL-GC-E-101          8     Hydrazine                                       28-0ct-15   Deletion New GL-GC-E-132          0     Hexavalent Chromium By Lachat                    21-Jul-15 Document GL-HR-E-002         17     Employee Training                              10-Dec-15    Revision Donald   c: Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Issue       DIRR Sop#           Rev                        Sop Title D~te        Type Change Control Requirements for Hardware GL-IT-E-004            4                                                        4-Feb-15  Revision and Software User Roles and Responsibilities for Personnel GL-IT-E-007            1                                                       30-Jun-15  Revision Using Computer Services GL-IT-E-011            4      System Security and Virus Protection              4-Feb-15  Revision Operation of LIMS Database Primary and GL-IT-E-015            2                                                       13-Apr-15  Revision Failover Servers The Determinatiqn of Method Detection GL-LB-E-001           14                                                        9-Apr-15  Revision Limits The Determination of Method Detection GL-LB-E-001           15                                                       16-Apr-15  Revision Limits GkLB-E-002             8      Balances                                       *17-Mar-15   Revision GL-LB-E-002            9      Balances                                        30~Mar-15   Revision GL-LB-E-002           10      Balances                                        30-Apr-15   Change Gl-LB-E-003           :17     Glassware Preparation                             8-Sep-15  Revision Temperature Monitoring.and Documentation GL-LB"E-004           11      Requirements
                               .             for Refrigerat'ors, Freezers,     20-Janw15  Revision Ovens, Incubators and Other Similar Devices GL-LB-E-005           10      Data Review and Validation                        8-Sep-15  Revision Basic Requirements for the Use and Maintenance of Laboratory Notebooks, GL-LB-E-OOS .          9                                                      24-Aug-15   Revision Logbooks, Forms and Ottier Recordkeeping Devices GL-LB-E-009            4      Run Logs                                       *16-Dec-15 Change Maintenance (!nd _Use of Air Displacement GL-LB-E-010            6                                                      17-Mar-15   Revision
                            . Pipettes The Collection and Monitoring of the DI Water GL-LB-E-016            ~                                                        8-Apr-15  Revi~ion Systems GL-LB-E-027            5      Bioassay Kit Delivery and Retrieval              24-Jun-15  Revision GL-LB-G-001           20    . Laboratory Waste Management Plan                  24-Jul-15 Revision GL-LB-N-001           16      Safety, Health and Chemical Hygiene Plan          7-Apr-15  Change GL-LB-N-001           17      Safety, Health and Chemical Hygiene Plan          24-Jul-15 Revision GL-LB-S-001            3      Disaste_r Preparedness and Recovery Plan          19-Jul-15 Revision Acid Digestion ofTotal*Recoverable or GL-MA-E-006           11      Dissolved Metals in Surface and Groundwater     19wFeb-15   Revision.
Samples for Analysis by ICP or ICP-MS Acid Digestion ofTotal Recoverable or GL-IVIA-E-006         12      Dissolved Metals in Surface and Groundwater       5-0ct-15  Revision Samples for Analysis by ICP or ICP-MS Donald C. Cook NuClear Plant            Annual Radiological Environmental Operating Report 2015 Issue         DIRR Sop#          Rev                         Sop Title Date         Type Acid Digestion of Total Metals in Aqueous GL-MA-E-008         16      Samples and Extracts for Analysis by ICP and     10-Feb-15    Revision
* ICP-MS Acid Digestion of To_tal Metals in Aqueous GL-MA-E-008         17      Samples and Extracts for Analysis by ICP and      5-0ct-15    Revision ICP-MS Acid Digestion of Sediments, Sludges, and GL-MA-E-009         24                                                       25-Feb-15    Revision Soils Acid Digestion of Sediments, Sludges, and GL-MA-E-009         25                                                       28-0ct-15    Revision Soils Mercury Analysis Using the Perkin Elmer GL-MA-E-010         28                                                        ?~Apr-15    Revision Automated Mercury Analyzer Mercury Analysis Using the Perkin Elmer GL-MA-E-010         29                                                        28-Jul-15   Revision Automated Mercury Analyzer Mercury Analysis Using the Perkin Elmer GL-MA-E-010         30                                                        5-0ct-15    Revision Automated Mercury Analyzer GL-MA-E-013         23      Determination of Metals by ICP                  19-May-15     Revision GL-MA-E~014         25      Determination of Metals by ICP-MS                25-Feb-15 .. Revision Sample Preparation for Total Recoverable GL-MA-E-016         13                                                       10-Feb-15    Revision Elements by EPA Method 200.Z Sample Preparation for Total Recoverable GL-MA-E-016         14                                                       28-0ct-15    Revision Elements by EPA Method 200.2 GL-MA-.E-017         g,     Metals Data Validation                             2-Jul-15   Revision Mercury Analysis l.Jsing the PS Analytical GL-MA-E-018         16                                                      14-Aug-15     Revision Millennium Automated Mercury Analyzer Acid Digestion of Personal Cassette Filters For GL-MA-E~020          2                                                       28-0ct-15    Revision Analysis by ICP Non-Volatile Total Petroleum Hydrocarbons GL-dA-E-003         24                                                       27-Jan-15    Change by Flame Ionization Detector Volatile Total Petroleum Hydrocarbons by GL-OA-E-004         25                                                      20-Nov-15     Revision Flame Ionization Detector.
Analysis of Semivolatile Organic Compounds GL-OA-E-009         34                                                       20-Jan-15    Change by Gas Chromatography/Mass Spectrometry Extraction of Semivolatile and Nonvolatile GL-OA-E-010         i3      O~ganic Compounds from Soil, Sludge, and          5-Jan-15    Change.
Other Miscellaneous Solid Samples Extraction of SemivoJatile and Nonvolatile GL-OA-E-010         24      Organic Compounds from Soil, Sludge, and           7-Jul-15   Change Other Miscellaneous Solid Samples Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Issue        DIRR Sop#          Rev                        Sop Title Date        Type Analysis of Chlorophenoxy Acid Herbicides by GL-OA-E-011         21                                                    20-Nov-15    Change ECD Extraction of Semivolatile and Nonvolatile GL-OA-E-013         27     Organic Compounds from Groundwater,               5-Jan-15  Change Wastewater, and Other Aqueous Samples Extraction of Semivolatile and Nonvolatile GL-OA-E-013         28     Organic Compounds from Groundwater,                2-Jul-15 Change Wastewater, and Other Aqueous Samples Volatile Organic Compounds by Gas GL-OA-E-022         11     Chromatograph/Mass Spectrometer                26-Aug-15    Revision Applicable to EPA Method 524.2 Volatile Organic Compounds (VOC) by Gas GL-OA-E-026         20                                                    28-May-15    Revision Chromatograph/Mass Spectrometer Volatile Organic Compounds (VOC) by Gas GL-OA-E-026         21                                                    30-Nov-15    Revision Chromatograph/Mass Spectrometer Organochlorine Pesticides and Chlorinated GL-OA-E-041         13                                                    27-Nov-15    Change Hydrocarbons Common Industrial Solvents, Glycols, and GL-OA-E-046          8     Various Organic Compounds by Flame               9-Dec-15   Change Ionization Detector Definitive Low Level Analysis of Nitroaromatic Explosives Utilizing Liquid Chromatography/
GL-OA-E-056         17     Mass Spectrometry/ Mass Spectrometry            16-Jun-15   Revision (LC/MS/MS) by SW-846 Method 8321 Modified (8321M)
Analysis of 1,2-Dibromoethane (EDB) and 1,2-GL-OA-E-059         13     Dibromo-3-Chloropropane (DBCP) in Water by      21-Apr-15   Change GC/ECD Using Methods 504.1 or 8011 Analysis of 1,2-Dibromoethane (EDB), 1,2-Dibromo-3-Chloropropane (DBCP) and 1,2,3-GL-OA-E-059         14                                                    20-Nov-15    Change Trichloropropane in Water by GC/ECD Using Methods 504.1 or 8011 Massachusetts Method for the Determination GL-OA-E-063          4                                                    24-Dec-15    Change of Extractable Petroleum Hydrocarbons (EPH)
Reagent/Solventistandards Screening for GL-OA-E-065          2                                                       7-Jul-15  Change Organic Prep GL-OA-E-066          5     Automated Soxhlet Extraction                      2-Jul-15  Change Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Issue      DIRR Sop#          Rev                        Sop Title Date       Type Definitive Low Level Perchlorate Analysis Utilizing Liquid Chromatography/Mass GL-OA-E-067         11     Spectrometry/Mass Spectrometry                  16-Jun-15  Revision (LC/MS/MS) by EPA Method 6850 _Modified (6850M)
The Pre-Extraction Processing of Soil Samples GL-OA-E-071          2     Collected Using Multi-Incremental Sampling      26-Feb-15  Revision (MIS) Techniques Analysis of 1,4-Dioxane in Drinking Water by GL-OA-E-073          0     Solid Phase Extraction (SPE) and Gas            20-Jan-15  Change Chromatography/Mass Spectrometry GL-QS-B-001         27     Quality Assurance Plan                         20-Mar-15 . Revision GL-QS-B-001         28     Quality Assurance Plan                         25-Mar-15   Revision GL-QS-B-002          7     DoD ELAP Quality Assurance Plan                 26-Jun-15  Revision GL-QS-E-001         22     Conduct of Quality Audits                       21-Jan-15  Revision GL-QS-E-007         11     Thermometer Verification                        20-Jan-15  Revision GL-QS-E-008         12     Quality Records Management and Disposition     21-May-15   Change Method Validation and Initial and Continuing GL-QS~E-011          8                                                    10-Nov-15   Revision Demonstrations of Capability The Determination of Technetium-99 Using GL-RAD-A-005        23                                                     10-Apr-15  Revision TEVA Resin The Determination of Technetium-99 Using GL-RAD-A-005        24                                                    17-Dec-15   Change TEVA Resin The Isotopic Determination of Americium, GL-RAD-A-011        25                                                      1-0ct-15  Revision Curium, Plutonium, and Uranium GL-RAD-A-016        16     The Determination of Radiometric Polonium       16-Apr-15  Revision The Determination of Promethium-147 in Soil GL-RAD-A-020        14                                                     10-Apr-15  Revision and Water GL-RAD-A-022        16     The Determination of Ni-59 and Ni-63            10-Apr-15  Change The Preparation of Special Matrices for the GL-RAD-A-026        14                                                      1-0ct-15  Revision Determination of Radionuclides The Isotopic Determination of GL-RAD-A-032        19                                                     14-0ct-15  Revision Neptunium/Thorium The Determination of Fe-55 in Liquid and Solid GL-RAD-A-040        11                                                     10-Apr-15  Revision Matrices by Liquid Scintillation Counter The Determination of Radium-224 and GL-RAD-A-046         7                                                      16-Jul-15 Revision Radium-226 by Alpha Spectroscopy The Determination of Calcium-45 in Soils and GL-RAD-A-048         8                                                    17-Dec-15   Change Waters Isotopic Determination of Plutonium in Large GL-RAD-A-053         4                                                    15-Dec-15   Revision Water Resin Samples Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Issue        DIRR Sop#           Rev                       Sop Title Date       "Type The Determination of Technetium-99 Using GL-RAD-A-059         3                                                   17-Dec-15   Change Analytical Grade 1X8 Resin The Determination of Carbon-14 in GL-RAD-A-065         0                                                   11-Aug-15   Change Atmospheric Screening Cartridges The Sequential Determination of Isotopic GL-RAD-B-001        41     Americiu~, Curium, Californium, Plutonium,     20-Jan-15  Change Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        42     Americium, Curium, Californium, Plutonium,     28-Apr-15  Change Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        42     Americium, Curium, Californium, Plutonium,     28-Apr-15  Change Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        43     Americium, Curium, Californium, Plutonium,      10-Jul-15 Revision Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        44     Americium, Curium, Californium, Plutonium,    11-Aug-15   Revision Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        45     Americium, Curium, Californium, Plutonium,    20-Nov-15   Revision Strontium, and Uranium in Urine The Determir:iation of Polonium-210 or GL-RAD-B-002        13                                                   20-Nov-15   Change Radium-226 in Bioassay Samples The Determination of Isotopic Thorium and GL-RAD-B-003        18                                                   31-Mar-15   Change Uranium in Urine Samples The Determination of Gross Alpha Activity in GL-RAD-B-008        11                                                    29-Apr-15  Revision Nasal Swipes Sequential Determination of Americium, GL-RAD-B-013        22     Plutonium, Strontium, Plutonium-241, and       24-Sep-15  Revision Uranium in Fecal, Bone, and Tissue Samples The Preparation of Synthetic Urine and Fecal GL-RAD-B-014        10                                                   26-Mar-15   Change Material GL-RAD-B-017        13     The Determination of Neptunium in Urine       31-Mar-15   Change Total Uranium in Bioassay Samples by Kinetic GL-RAD-B-019        11                                                    28-Apr-15 *Change Phosphorescence The Determination of Gross Alpha and Gross GL-RAD-B-022         7                                                   26-Mar-15   Change Non-Volatile Beta in Urine The Determination of Gross Alpha and Gross GL-RAD-B-022         8                                                   24-Sep-15   Revision Non-Volatile Beta in Urine Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Issue        DIRR Sop#          Rev                       Sop Titl~
Date        Type GL-RAD-B-023         8     The Determination of Carbon-14 in Urine         7-0ct-15   Change GL-RAD-B-039         2     The Determination of lron-55 in Urine         26-Mar-15    Change The Determination of Radium-224 and GL-RAD-B-040         1     Radium-226 by Alpha Spectroscopy in           26~Mar-15    Change Bioassay Samples Data Review, Validation and Data Package GL-RAD-D-003        39                                                   19-Mar-15    Revision Assembly Equations Used in Data Reduction for GL-RAD-D-006         6                                                   12-Mar-15    Revision Environmental Radiochemistry GL-RAD-1-001        19     Gamma Spectroscopy System Operation           24-Mar-15    Revision GL-RAD-1-004        18     Beckman LS-6000/6500                          30-Mar-15    Revision LB4100 Gross Alpha/Beta Counter Operating GL-RAD-1-006        16                                                     8-Apr-15   Revision Instructions GL-RAD-1-009        14     Alpha Spectroscopy System                     12-May-15    Revision GL-RAD-1-014        15     WALLAC Guardian Model 1414                    30-Mar-15    Revision Multi-Detector Counter: Operating GL-RAD-1-016         9                                                     8-Apr-15   Revision Instructions Wallac 1220 Quantalus Liquid Scintillation GL-RAD-1-017        12                                                   3'1-Mar-15 . Revision Counter GL-RAD-1-020         1     nperation of the Gamma Analyst                 28-0ct-15   Delet'ion Preparation and Verification of Radioactive GL-RAD-M-001        31                                                   26-Mar.-15   Revision  I Standards Preparation and Verification of Radioactive GL-RAD-M-001        32                                                     3-Jun-15   Revi.sion Standards GL-SR~E-001         43     Sample Receipt, Login, and Storage             27-Jan-15   Revision Design Specifications for the Network GL-SVR-D-001         6                                                   10-Dec-15    Revision Infrastructure GL-SVR-E-005         2     Backupsvr01                                     4-Feb-15   Revision Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015

==7.0      REFERENCES==
: 1. US NRG Radiological Assessment Branch Technical Position, "An Acceptable Radiological Environmental Monitoring Program," Revision 1, November 1979.
: 2. NCRP Report No. 94, Exposure of the Population in the United States and Canada from Natural Background Radiation, National Council on Radiation Protection and Measurements, 1987.
8.0      ERRATA It was identified that the mean concentration and range for tritium (H-3) in drinking water reported in Table 3.1 of the 2014 CNP AREOR was incorrect and did not match up with the data listing provided in Appendix D of the same document. Specifically, the mean and range for the indicator station (LTW) and the station with the highest mean (same location) were reported in Table 3.1 of the AREOR as 6.6E4 pCi/L and 264,000 pCi/L respectively, whereas the individual H-3 quarterly concentration values reported in Appendix D for the indicator station (LTW) were -2.35E+01, -4.55E+01, 3.03E+01 and 2.64E+02 pCi/L, which would result in a correct mean of 56.3 pCi/L and a range of 264 pCi/L AREVA initiated CR 2016-266 and a corrected drinking water table is provided on the following pages.
Donald C. Cook Nuclear Plant                      Annual .Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2014)
MEDIUM: Drinking Water !WDl                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
BETA       (52)    4           1.0E 0                   STJ                     l.4E 0                         1.4E 0 (0)               -2.4 - 2.7)E 0                                   -4.2 - 31.4)E -1               -4.2 - 31.4)E -1 (0/ 26)                                          (0/ 26)                        (0/ 26)
H-3        (8)   2000          5.6E 1                   LTW                     5.6E 1                       -l.2E 2 (0)               -4.6 - 26.4)E 1                                  -4.6 - 26.4)E 1                -7.5 - 2.l)E 2 (0/ 4)                                           (0/ 4)                         (0/ 4)
Be-7       (52)                3.4E -1                  LTW                     3.4E -1                      -3.6E -2 (0)               -1.4 - 2.4)E 1                                   -1.4 - 2.4)E 1                 -1.9 - l.5)E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
K-40       (52)                4.2E 0                   STJ                     6.SE 0                         6.5E 0 (0)               -3.3 - 4.8)E 1                                   -4.4 - 4.2)E 1                 -4.4 - 4.2)E 1 (1/ 26)                                          (1/ 26)                        (1/ 26)
Cr-51      (52)               2.5E 0                    LTW                     2.SE 0                       -1.2E 0 (0)               -2.2 - 2.5)E 1                                   -2.2 - 2.5)E 1                 -2.1 - 2.7)E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
Mn-54      (52)   15          1.5E -1                   LTW                     1.SE -1                      -1. 2E -1 (0)               -1.9 - 3.0)E 0                                   -1.9 - 3.0)E 0                 -2.1 - 4.7)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Co-57      (52)                3.9E -1                  LTW                     3.9E -1                      -1.3E -1 (0)               -2.1 - 2.7)E 0                                   -2.1 - 2.7)E 0                 -1.4 - 1.0)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Co-58      (52)   15         -2.9E -1                   STJ                   -2.4E -1                       -2.4E -1 (0)               -3.3 - 1.5)E 0                                   -3.5 - 2.l)E 0                 -3.5 - 2.l)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Fe-59      (52)   30          5.8E -1                   STJ                     5.9E -1                        5.9E -1 (0)               -5.1 - 7.3)E 0                                   -3.2 - 4.l)E 0                 -3.2 - 4.l)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-60      (52)   15         -5.lE -2                   STJ                     3.lE -1                        3.lE -1 (0)               -2.7 - 2.8)E 0                                   -3.1 - 3.3)E 0                 -3.1 - 3.3)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Zn-65      (52)   30         -1.3E 0                    STJ                   -1.5E -1                       -1.5E -1 (0)               -8.0 - 6.5)E 0                                   -4.8 - 10.5)E 0                -4.8 '- 10.5)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Se-75      (52)               1. 9E -1                  LTW                     1. 9E -1                       2.lE -3 (0)               -4.5 - 3.0)E 0                                   -4.5 - 3.0)E 0                 -3.8 - 3.l)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Donald C. Cook Nuclear Plant                        Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2014)
MEDIUM: Drinking Water (WO)                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides              Mean***                        Station            Mean***                       Mean***
(No. Analyses)    Required Range                                             Range                         Range Non-Routine*        LLD    No. Detected**                                    No. Detected**                No. Detected**
Nb-95        (52)   15           6.6E -1                  LTW                     6.6E -1                      -8.9E -2 (0)               -1.6 - 3.4)E 0                                   -1.6 - 3.4)E 0                 -2.3 - 2.7)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Zr-95      . (52)   30           3.7E -1                  LTW                     3.7E -1                        1.lE -1 (0)               -3.8 - 14.8)E 0                                  -3.8 - 14.8)E 0                -3,4 - 3.7)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ru-103       (52)              -2.5E -1                   LTW                   -2.5E -1                       -5.9E -1 (0)               -3.5 - 5.5)E 0                                   -3.5 - 5.5)E 0                 -2.9 - 1.2)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ru-106       (52)              -2.lE 0                    LTW                   -2.lE 0                        -3.lE 0 (0)               -2.3 - 2.8)E 1                                   -2.3 - 2.8)E 1                 -1. 9 - 0. 9) E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ag-108m      (52)               4.0E -3                   LTW                     4.0E -3                      -6.0E -2 (0)               -3.0 - 1.6)E 0                                   -3.0 - 1.6)E 0                 -2.6 - 1.5)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ag-110m     (52)               -9.4E -1                   STJ                     6.lE -2                        6.lE -2 (0)                -3.6 - 1.6)E 0                                   -2.5 - 3.3)E 0                 -2.5 - 3.3)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Sb-124       (52)               8.9E -3                   LTW                     8.9E -3                      -4.4E -1 (0)                -4.1 - 5.0)E 0                                   -4.1 - 5.0)E 0                 -4.7 - 3.4)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Sb-125       (52)               2.3E -3                   STJ                     l.4E 0                         l.4E 0 (0)               -9.8 - 11.5)E 0                                  -2.2 - 8.l)E 0                 -2.2 - 8.l)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26) 1-131       (52)     1          9.0E -2                   LTW                     9.0E -2                      -1.0E -2 (0)                -5.5 - 51.0)E -1                                 -5.5 - 51.0)E -1               -5.6 - 7.6)E -1 (0/ 26)                                           (0/ 26)                       (0/ 26)
Cs-134      (52)    15          8.lE -2                   STJ                     6.2E -1                        6.2E -1 (0)                -3.0 - 4.0)E 0                                   -2.2 - 3.2)E 0                 -2.2 - 3.2)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Cs-137      (52)    18          6. 7E -1                  LTW                     6.7E -1                        6.5E -1 (0)                -2.4 - 3.9)E 0                                   -2.4 - 3.9)E 0                 -2.9 - 4.6)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Ba-140      (52)    60          3.5E -1                   LTW                     3.5E -1                      -9.3E -1 (0)                -3.1 - 5.7)E 0                                   -3.l - 5.7)E 0                 -6.6 - 3.5)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmer;ital Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2014)
MEDIUM: Drinking Water (WO)               UNITS: .pCi/liter Indicator Stations                     Station With Highest Mean          Control Stations Radionuclides                     Mean***                      Station           Mean***                     Mean***
(No. Analyses)       Required     Range                                          Range                       Range Non-Routine*            LLD       No. Detected**                                 No. Detected**              No. Detected**
La-140      (52)         15           3.5E -1                  LTW                   3.5E -1                   -9.3E -1 (0.)                     -3.1 -5.7)E 0                                  -3.1 - 5.7)E 0             -6.6 - 3.5)E 0 (0/ 26)                                       (0/ 26)                   (0/ 26)
Ce-141      (52)                      2.7E -1                  LTW                   2.7E -1                     3.3E -2 (0)                      -5.2 - 5.S)E 0                                 -5.2 - 5.S)E 0             -5.9 - 7.6)E 0 (0/ 26)                                       (0/ 26)                   (0/ 26)
Ce-144      (52)                     -1. lE 0                  STJ                   3.3E -1                     3.3E -1 (0)                      -1.8 - 2.8)E 1                                 -1.5 - 1.2)E 1             -1.5 - 1.2)E 1 (0/ 26)                                       (0/ 26)                   (0/ 26)
Ac-228      (52)                      2.0E 0                   LTW                   2.0E 0                      3.6E -1 (0)                      -9.1 - 21.5)E 0                                -9.1 - 21.5)E 0            -1.4 - 1. 7)E 1 (0/ 26)                                       (0/ 26)                   (0/ 26)
Th-228      (52)                      3.3E 0                   LTW                   3.3E 0                      2.0E 0 (0)                      -4.4 - 14.0)E 0                               -4.4 - 14.0)E 0             -7.1 - 7.7)E 0 (0/ 26)                                       (0/ 26)                   (0/ 26)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM.
**The fraction of sample analysis yielding detectable measurements (i.e., > MOC) is shown in parentheses.   *
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
* Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2015 APPENDIX A SYNOPSIS OF ANALYSIS TECHNIQUES A-1

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 GEL Labs GROSS ALPHA/BETA ANALYSIS Air particulate samples, collected on a weekly basis aid in verifying the in-plant controls used for monitoring the release of radioactive materials. The samples are transmitted to the laboratory for gross beta radioactivity analysis. Air particulate samples are analyzed on a low background alpha/beta .gas proportional counting unit, for a predetermined amount of time; following a delay to allow for the decay of radon products. Blank filters, either provided by the client, or of the same size and type as the client filters are used for background subtraction. If the beta activity concentration is greater than 0.2 pCi/m 3 , the sample may need to be analyzed for individual gamma emitters. Each sample is composited by sampling location and held-until the end of the quarter for a gamma isotopic analysis.
Environmental water samples are also analyzed for gross alpha and/or gross beta radioactivity.
Measurable amounts of alpha and beta emitting radionuclides, either naturally-occurring or artificially produced, are found in most environmental water samples. Gross alpha and gross beta measurements are rapid screening methods that may indicate the need for a more detailed isotopic analysis. Samples are evaporated to near dryness and quantitatively transferred to concentric ring, stainless steel planchets, where the evaporation is completed as described in EPA Method 900.0. A gas proportional counter is used for the measurement of gross alpha/gross beta radioactivity. Solid deposition is an interference in this method and must be accounted for during instrument calibration.
No decay is accounted for in the gross alpha/beta activity concentration calculations since the radionuclides of origin are not known. The MDC depends on sample size, counting system char~cteristics, background, and counting time. Typical counting times for gross alpha/beta analyses are seventy-five minutes for waters and sixty minutes for air particulate filters.
GAMMA SPECTROMETRY The following media are typically analyzed for gamma-emitting radionuclide activity: milk, water, ,
charcoal cartridges, airborne particulate filters, biological material (which includes aquatic animals, plants, and terrestrial vegetation), and. sediment or soil samples. Samples are prepared by various controlled methods (blending, drying, milling) in order to maximize the volume that can be analyzed, and to achieve sample homogeneity. In order to ensure the precision and* accuracy of the gamma measurements, specific counting containers are used to load sample media in a reproducible manner. Sample spectra are collected via high purity germanium based gamma ray spectrometry detection systems. The gamma spectrometry software can account for baseline corrections, background peak interferences, and photopeak multiplet resolution. Detected photopeaks are identified using a comprehensive library, specifically tailored for environmental monitoring around nuclear power facilities. Typical counting times for gamma spectrometry analyses vary from 7,200 to 30,000 seconds.
LOW LEVEL IODINE. ANALYSIS The low detection limit required for 1-131 in milk and water samples can only be achieved by radiochemical separation and concentration of the iodine.
A-2

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Iodate carrier is added to an acidified sample and, after reduction with Na2 S04 to iodide, the 1-131 is precipitated with AgN0 3 . The precipitate is dissolved and purified with Zinc powder and H2S04 and the solution is re-precipitated as Pdl 2 , which is then filtered on to a polypropylene filter and counted on a low background gas flow proportional counter.
H-3 ANALYSIS The determination of tritium in environmental matrices basically involves a sample preparation step followed by distillation and analysis of the pure distillate by liquid scintillation spectrometry.
The tritium counting efficiency is determined using an efficiency curve generated as a function of sample quench. A set of NIST (National Institute of Standards and Technology) traceable standards is used for calibration.
* The sample preparation step involves extracting H-3 from the matrix in the presence of NaOH and KMn0 4 allowing for sufficient equilibration time so that a complete transposition of tritium with stable hydrogen has occurred.
A-3

Donald C. Cook Nuclear Plant     Annual Radiological Environmental Operating Report 2015 APPENDIX B 2015 LAND USE CENSUS B-1

Donald  t. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 2015 Radiological Environmental Monitoring Program Land Use Census Summary Date: September 29, 2015 Purpose A Land Use Census (LUC) is performed annually to identify relevant changes in land usage in the area surrounding Donald C. Cook Nuclear Plant (CNP) which have the potential to affect radiation exposure pathways. Identified changes are evaluated to determine if modifications should be made to the Radiological Environmental Monitoring Program (REMP) or other related programs.
A summary of the 2015 LUC is detailed below.
Dairy Farm Survey
.A dairy farm survey was conducted from August 14 through September 30, 2015, to update the following information:
* Dairy farms located in the area around the CNP (within Berrien County, Ml)
* Location nearest to CNP where animal milk is produced for human consumption.
                                                                                                    ~
As a result of information obtained prior to and during the census period, one identified dairy farm in Sector H has ceased milking operations. That farm is listed here:
Dean Lozmack, 14843 Cleveland Road, Galien, Ml, 49113, Sector H, discontinued milking operations in July, 2015.
Additionally, 'during the 2014 Land Use Census reporting period, Livinghouse Farm (REMP Designation: LF) notified CNP personnel that they would cease milking operations as soor:i as their milk cows are sold. This anticipated change was administered during October-November, 2014.
I Currently, there are zero (0) indicator (within eight miles of the CNP) farms/residences which have dairy_ animals providing milk for human consumption which participate in the CNP REMP Dairy Farm Milk sampling program.
CNP REMP requirements specify a minimum of three indicators (within 8 miles of CNP) milk farms/residences are needed to support the milk sampling program. Due to the lack of any dairy farms/residences participating at this time, the milk sampling program continues to be considered suspended.
In accordance with REMP guidance, Broadleaf sampling "in-lieu of milk" continues to be conducted as a compensatory action for this condition.
Finally, the census identified the closest animals (cows) providing milk for human consumption as follows:
Shuler Farm (REMP Designation: SF) 8-2

Donald C. Cook Nuclear Plant              Annual.Radiological Environmental Operating Report 2015 Sector/Distance from CNP: G and H / 4.12 miles (21,648 feet) 2791 Snow Rd.
Baroda, 49101 Livestock for Consumption Survey During the time period August 14 through September 30, 2015, the Livestock Survey examined farms near CNP that produce livestock for consumption to determine the location closest to CNP in each land sector within 5 miles.
As a result of information obtained prior to and during the census period, two new farms which support livestock (beef and/or goats) operations were identified in Sectors G and E. Those farms are listed here:
Jeff Monroe Farm (Be~f & Goats), 10627 Miller Rd., Baroda, Ml 49101, Sector G; Distance from CNP: 4.83 mi.
Gary Klutts Farm (Beef), 770 Hinchman Rd., Baroda, Ml 49101 Sector E; Distance from CNP: 4.813 mi.
The location which was determined to be the "Closest Livestock for Consumption (meat)" did not change from. the 2014 report.
* Robert Mast Farm, Livingston Road, Bridgman, Ml, 49106 (Distance From CNP: 1.41 miles (7,445 feet) and recorded as part of this census on the
       . associated Data Sheet 1, Land Use Census, Section IV. "Closest Livestock for Consumption (meat)" to .12-THP-6010-RPP-640 "Land Use Census".
Residential Land Use Survey From June 1, 2014 to June 1, 2015, per Lake Township Building Inspector, Jim Gast, 0 (zero) new residential building permits were issued for residential construction in the Lake Township sections that border the CNP property (Sections 5, 6, 7, and 8). Additionally, there were 0 (zero) Demolition Permits issued during that time. As a consequence, there was no impact on the "closest residences" already listed on 12-THP-6010-RPP-640 Data Sheet 1 - "Residential Land Use Data" section.
Per email correspondence with the Berrien County Health Department, there were no groundwater well permits issued in Lake Township Sections 5, 6, 7, or 8 during this time period.
Per email correspondence with the Michigan Department of Agriculture, there was no usage of Lake Michigan water for agricultural irrigation purposes in Berrien County.
B-3

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Garden Census. Grape and Broadleaf Sampling During the time period August 20 through September 30, 2015, a survey of nearby properties verified that the gar.den located at 7379 Rosemary Rd. (0.91 miles [4,805 feet] from CNP), in Sector C, is still the "Closest Garden Producing Fresh Leafy Vegetables."
In lieu of conducting the Garden Census as part of this LUC, 2015 Broadleaf Sampling was performed per the requirements of the ODCM and in accordance with 12-THP-601 O-RPP-638, Collection of Grape and Broadleaf Samples.
Notifications and Updates The 2015 Land Use Census identified no relevant changes in usage to areas surrounding CNP.
The identified changes in this report have been evaluated per PMP-6010-0SD-001 Off-Site Dose Calculation Manual, and repres*ent no changes in dose commitment.
B-4

Donald C. Cook Nuclear Plant    An'nual Radiological Environmental Operating Report 2015 APPENDIX C QUALITY ASSURANCE PROGRAM C-1

Donald C. Cook Nuclear Plant               Annual Radiological Environmental Operating Report 2015 Appendix C: Quality Assurance (QA) Programs GEL Laboratories QA GEL's primary goals are to ensure that all measurement data generated are scientifically and legally defensible, of known and acceptable quality per the data quality objectives (DQOs), and thoroughly documented to provide sound support for environmental decisions. In addition, GEL continues to ensure compliance with all contractual requirements, environmental standards, and regulations established by local, state and federal authorities.
GEL administers the QA program in accordance with their Quality Assurance Plan, GL-QS   001. The Quality Systems include all QA policies and quality control (QC) procedures necessary to plan, implement, and assess the work that GEL performs. GEL's QA Program establishes a quality management system (QMS) that governs all of the activities of the organization.
The results of GEL's assessment of their laboratory activities listed in this section entails their QA program for the proficiency testing (PT) and environmental monitoring aspects of GEL for 2015. GEL's QA Program is designed to monitor the quality of analytical processing associated with environmental, radiobioassay, effluent (10 CFR Part 50), and waste (10 CFR Part 61) sample analysis.
This summary was extraGted from GEL Laboratories report entitled "2015 Annual Quality Assurance Report for the Radiological Environmental Monitoring Program (REMP)", dated April 4, 2016, and includes:
* Intra-laboratory QC results analyzed during 2015.
* Inter-laboratory QC results analyzed during 2015 where known values were available.
QA Programs for Inter-laboratory, Intra-laboratory and Third Party Cross Check In addition to internal and client audits, GEL's laboratory participates in annual performance evaluation studies conducted by independent providers. GEL routinely participates in the
* following types of performance audits:
* PT and other inter-laboratory comparisons.
* Performance requirements necessary to retain Certifications.
* Evaluation of recoveries of certified reference and in-house secondary reference materials using statistical process control (SPC) data.
* Evaluation of relative percent difference between measurements through SPC data.
GEL also participates in a number of PT programs for federal and state agencies, and as required by contracts. It is GEL's policy that no proficiency evaluation samples be analyzed in any special manner. GEL's annual performance evaluation participation generally includes a combination of studie& that support the following:
      .*  US Environmental Protection Agency Discharge Monitoring Report, Quality Assurance Program (DMR-QA). An annual national program sponsored by the US Environmental Protection Agency (EPA) for laboratories engaged in the analysis of samples associated C-2

Donald C. Cook Nuclear Plant               Annual Radiological Environmental Operating Report 2015 with the National Pollutant Discharge Ellimination System (NPDES) monitoring program.
Participation is mandatory for all holders of NPDES permits. The permit holder must analyze for all of the parameters listed on the discharge permit. Parameters include general chemistry, metals, biochemical oxygen demand, chemical oxygen demand, oil and grease, ammonia, nitrates, etc.
* Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP).
A semiannual program developed by the DOE in support of DOE contractors performing waste analyses. Participation is required for all laboratories that perform environmental analytical measurements in support of environmental management activities. This program includes radioactive isotopes in water, soil, vegetation and air filters. *
* ERA's Multimedia Radiochemistry PT program (MRaD'). This program is for labs seeking certification for radionuclides in wastewater and solid waste. The program is conducted in strict compliance with EPA National Standards for Water PT study.
* ERA's lnterLab RadChem PT Program for radiological analyses. This program completes the process of replacing the EPA Environmental Monitoring Systems Laboratory, Las Vegas (EMSL-LV) Nuclear Radiation Assessment Division program which was discontinued in 1998. Laboratories seeking certification for radionuclide
        . analysis in drinking water also use the study. This program is conducted in strict compliance with the EPA National Standards for Water PT Studies. This program encompasses Uranium by EPA method 200.8 (for drinking water certification in Utah/Primary NELAP), gamma emitters, Gross Alpha/Beta, lodine-131, naturally occurring radioactive isotopes, Strontium-89/90, and Tritium.
* ERA's Water Pollution (WP) biannual program for waste methodologies, which includes parameters for both organic and inorganic analytes.
* ERA's Water Supply (WS) biannual program for drinking water methodologies, which includes parameters for organic and inorganic analytes.
* Environmental Cross-Check Program administered by Eckert & Ziegler Analytics, Inc.
This progr:am encompasses radionuclides in water, soil, milk, naturally occurring radioactive isotopes in soil and air filters:
GEL procures single-blind performance evaluation samples from Eckert & Ziegler Analytics to verify the analysis of sample matrices processed at GEL. Samples are received on a quarterly basis. GEL's Third-Party Cross-Check Program provides environmental matrices encountered in a typical nuclear utility REMP. The Third-Party Cross-Check Program is intended'to meet or exceed the inter-laboratory comparison program requirements discussed in NRG Regulatory Guide 4.15. Once performance evaluation samples have been prepared in accordance with the instructions provided by the PT program provider, samples are managed and analyzed in the same manner as environmental samples from GEL's clients.
C-3

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 QA Program for Internal and External Audits During each annual reporting period, at least one internal assessment of each area of the laboratory is conducted in accordance with the pre-established schedule from Standard Operating Procedure (SOP) for the Conduct of Quality Audits, GL-QS-E-001. The annual internal audit plan is reviewed for adequacy and includes the scheduled frequency and scope of quality control actions necessary to GEL's QA program. Internal audits are conducted at least annually in accordance with a schedule approved by the Quality Systems Director. Supplier audits are contingent upon the categorization of the supplier, and may or may not be conducted prior to the use of a supplier or subcontractor. 1ype I suppliers and subcontractors, regardless of how they were initially qualified, are re-evaluated at least once every three years.
In addition, prospective customers audit GEL during pre-contract audits. GEL hosts several external audits each year for both our clients and other programs. These programs include environmental monitoring, waste characterization, and radiobioassay. The following list of programs may audit GEL at least annually or up to every three years depending on the program:
* NELAC, National Environmental Laboratory Accreditation Program (NELAP)
* DOECAP, U.S. Department of Energy Consolidated Audit Program
* DOELAP, U.S. Department of Energy Laboratory Accreditation Program
* DOE QSAS, U.S. Department of Energy, Quality Systems for Analytical Services
* ISO/IEC 17025:2005
* A2LA, American Association for Laboratory Accreditation
* DOD ELAP, US Department of Defense Environmental Laboratory Accreditation Program
* NUPIC, Nuclear Procurement Issues Committee
* SC DHEC, South Carolina Department of Health and Environmental Control The annual radiochemistry laboratory internal audit (15-RAD-001) was conducted in May, 2015.
One (1) finding, three (3) observations, and one (1) recommendation resulted from this assessment. By July, 2015, the finding was closed and appropriate laboratory staff addressed each observation and recommendation.
Performance Evaluation Acceptance Criteria for Environmental Sample Analysis GEL utilized an acceptance protocol based upon two performance models. For those inter-laboratory, programs that already have .established performance criteria for bias (e.g. MAPEP, and ERA/ELAP), GEL will utilize the criteria for the specific program. For intra-laboratory or third party quality control programs that do not have a specific acceptance* criteria (e.g. the Eckert-Ziegler Analytics Environmental Cross-check Program), results, will be evaluated in accordance with GEL's internal acceptance criteria.
Performance Evaluation Samples Performance Evaluation (PE) results and internal quality control sample results are evaluated in accordance with GEL acceptance criteria. The first criterion concerns bias, which is defined as the deviation of any one result from the known value. The second criterion concerns precision, C-4

Donald C. Cook Nuclear Plant               Annual Radiological Environmental Operating Report 2015 which deals with the ability of the measurement to be replicated by comparison of an individual result with the mean of all results for a given sample set.
GEL also evaluates its analytical performance on a regular basis through SPC acceptance criteria. Where feasible, this criterion is applied to both measures of precision and accuracy and is specific to sample matrix. GEL establishes environmental process control limits at least annually.
* For Radiochemistry analysis, QC evaluation is based on static limits rather than those that are statistically derived. Current process control limits are maintained in GEL's Alpha Laboratory Information Management System (LIMS). GEL also measures precision with matrix duplicates and/or matrix spike duplicates. The upper and lower control limits (UCL and LCL respectively) for precision are plus or minus three times the standard deviation from the mean of a series of relative percent differences. The static precision criteria for radiochemical analyses are O -
20%, for activity levels exceeding the contract required detection limit (CRDL).
QC Program for Environmental Sample Analysis GEL's internal QA Program is designed to include QC functions such as instrumentation calibration checks (to ensure proper instrument response), blank samples, instrumentation backgrounds, duplicates, as well as overall staff qualification analyses and statistical process controls. Both QC and qualification analyses samples are used to be as similar as the matrix type of those samples submitted for analysis by the various laboratory clients. These performance test (PT} samples (or performance evaluation samples) are either actual samples submitted in duplicate in order to evaluate the precision of laboratory measurements, or fortified blank samples, which have been given a known quantity of a radioisotope that is of interest to GEL's clients.
Accuracy (or Bias) is-measured through laboratory control samples and/or matrix spikes, as well as surrogates and internal standards. The UCLs and LCLs for accuracy are plus or minus three times the standard deviation from the mean of a series of recoveries. The static limit for radiochemical analyses is 75 - 125.%. Specific instructions for out-of-control situations are provided in the applicable analytical SOP.
GEL's Laboratory Control Standard (LCS) is an aliquot of reagent water or other blank matrix to which known quantities of the method analytes are added in the laboratory. The LCS is analyzed exactly like a sample, and its purpose is to determine whether the methodology is in control, and whether the laboratory is capable of making accurate and precise measurements.
Some methods may refer to these samples as Laboratory Fortified Blanks (LFB). The
* requirement for recovery is between 75 and 125% for radiological analyses excluding drinking water matrix.
Bias(%)= (observed concentration)
* 100 %
(known concentration)
* Precision is a data quality indicator of the agreement between measurements of the same property, obtained under similar conditions, and how well they conform to themselves.
Precision is usually expressed as standard deviation, variance or range in either absolute or relative (percentage) terms.
C-5

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 GEL's laboratory sample duplicate (DUP or LCSD) is an aliquot of a sample taken from the same container and processed in the same manner under identical laboratory conditions. The aliquot is analyzed independently from the parent sample and the results are compared to measure precision and accuracy.
If a DUP is analyzed, it will be reported as Relative Percent Difference (RPO). The RPO must be 20 percent or less, if both samples are greater than five times the MDC. If both results are less than five times MDC, then the RPO must be equal to, or less than 100 percent. If one result is above the MDC and the other is below the MDC, then the RPO can be calculated using the MDC for the result of the one below the MDC. The RPO must be 100 percent or less. In the situation where both results are above the MDC but one result is greater than five times the MDC and the other is less than five times the MDC, the RPO must be less than or equal to 20 percent. If both results are below MDC, then the limits on percent RPO are not applicable.
Difference (%) =(high DUP result -   low DUP result)
* 100 %
(average of results)
Summary of Data Results During 2015, forty-four (44) radioisotopes associated with seven (7) matrix types were analyzed under GEL's Performance Evaluation program in participation with ERA, MAPEP, and Eckert &
Ziegler Analytics. Matrix types were representative of client analyses performed during 2015.
Of the four hundred eighty-four (484) total results reported, 98.8% (478 of 484) were found to be acceptable. Results marked with "warning" are considered acceptable for this program because they are still within the 3-sigma acceptance criteria.The list below contains the type of matrix evaluated by GEL:
* Air Filter
* Cartridge
* Water
* Milk
* Soil
* Liquid
* Vegetation A summary list of all inter-laboratory radiological PT results and their evaluation against their acceptance criteria is provided in Table C-1. This list reflects GEL's participation in the MAPEP Monitoring Program, the ERA MRaD PT Program, the ERA PT Program, and the Eckert &
Ziegler Analytics Environmental Cross-Check Program.
* Summaries of GEL's intra-laboratory test results. for bias and precision by sample matrix are provided in Table C-3 (REMP Related) and Table C-4 (All Samples).
Summary of Participation in the Eckert & Ziegler Analytics Environmental Cross-Check Program Eckert & Ziegler Analytics provided samples for one hundred fifteen (115) individual environmental analyses. The accuracy of each result reported to Eckert & Ziegler Analytics, Inc. is measured by the ratio of GEL's result to the known value. All results fell within GEL's C-6

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 acceptance criteria (100%). Table C-2 lists the results specific to the Eckert & Ziegler Analytics sample provided in 2015. No corrective action reports were noted for these results.
Summary of Participation in the MAPEP Monitoring Program MAPEP Series 32 and 33 were analyzed by the laboratory. Of the one hundred thirty-five (135) analyses, 100% (135 out of 135) of all results fell within the PT provider's acceptance criteria.
Summary of Participation in the ERA MRaD PT Program The ERA MRad program provided samples (MRAD-22 and MRAD-23) for one hundred eighty-six (186) individual environmental analyses. Of the one hundred eighty-six (186) analyses, 99.5% (185 out of 186) fell within the PT provider's acceptance criteria. One analytical failure occurred: Total Uranium in vegetation.
For the corrective actions associated with MRAD-22, refer to CARR 150519-954 which is detailed in Table C-5.
Summary of Participation in the ERA PT Program The ERA program provided samples (RAD-100, RAD-101, RAD-102 and RAD-103) forforty-eight (48) individual environmental analyses. Of the 48 analyses, 89.6% (43 out of 48) of all results fell within the PT provider's acceptance criteria. Isotope failures included: Cesium-137, Radium-228, lodine-131, Strontium-89 and Strontium-90.
For the corrective actions associated with isotope failures refer to corrective actions CARR150223-929, CARR150610-962, CARR150825-971, and CARR151130-993 (Table C-5).
Corrective Action Request and Report (CARR)
There are two categories of corrective action at GEL. One is corrective action implemented at the analytical and data review level in accordance with the analytical SOP. The other is formal corrective action documented by the Quality Systems (QS) Team in accordance with SOP GL-QS-E-002. A formal corrective action is initiated when a nonconformance reoccurs or is so significant that permanent elimination or prevention of the problem is required. Formal corrective action investigations include root cause analysis.
GEL includes quality requirements in most analytical SOPs to ensure that data are reported only if the QC criteria are met or the QC measures that did not meet the acceptance criteria are documented. A formal corrective action is implemented according to GEL's standard operating procedure GL-QS-E-002 for Conducting Corrective/Preventive Action and Identifying Opportunities for Improvement. Recording and documentation is performed following guidelines stated in GEL's SOP GL-QS-E-012 for Client NCR Database Operation.
Any employee at GEL can identify and report a nonconformance and request that corrective action be taken. Any GEL employee can participate on a corrective action team as requested by the QS team or Group Leaders. The steps for conducting corrective action are detailed in GEL's SOP GL-QS-E-002. In the event that correctness or validity of the laboratory's test results in doubt, the laboratory will take corrective action. If investigations ~how that the results C-7   .

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 have been impacted, affected clients will be informed of the issue in writing within five (5) calendar days of the discovery.
Table C-5 provides the status of CARRs for radiological performance testing during 2015. GEL has determined that causes of the failures did not impact any data reported to its clients.
C-8

Donald C. Cook Nuclear Plant                                                                                                                                     Annual Radiological Environmental Operating Report 2015 Table C-1 2015 Inter-Laboratory Radiological Proficiency Testing Results and Acceptance Criteria
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EZA               4th/2014              03/10/15       E11057                                      Cartridae                PCi                     lodine-131               8.70E+01                   9.89E+01                      0.88.                 Acceptable EZA               4th/2014              03/10/15       E11058                                           Milk               pCi/L                  Strontium-89               9.09E+01                   9.57E+01                      0.95                  Acceptable EZA               4th/2014              03/10/15       E11058                                           Milk               pCi/L                  Strontium-90                1.39E+01                  1.56E+01                      0.89                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                    lodine-131                9.34E+01                  9.51 E+01                     0.98                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                   Cerium-141                2.33E+02                   2.19E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               PCi/L                        Cr-51                 4.22E+02                  4.06E+02                      1.04                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                   Cesium-134                 1.50E+02                  1.64E+02                      0.91                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                   Cesium-137                2.16E+02                   1.98E+02                      1.09                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                     Cobalt-58                1.32E+02                  1.30E+02                      1.02                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                        Mn-54                 2.39E+02                  2.25E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               PCi/L                       lron-59                1.80E+02                  1.75E+02                      1.03                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                       Zinc-65                3.32E+02                  2.97E+02                      1.12                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                     Cobalt-60                2.49E+02                  2.35E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                PCi/L                    lodine-131                1.11 E+02                 9.53E+01                      1.16                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                   Cerium-141                 3.02E+02                  2.84E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                        Cr-51                 5.43E+02                  5.26E+02                      1.03                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                   Cesium-134                 1.90E+02                  2.13E+02                      0.89                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                   Cesium-137                 2.58E+02                  2.57E+02                      1.01                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                     Cobalt-58                1.73E+02                  1.68E+02                      1.03                  Acceptable EZA              4th/2014              03/10/15       E11060                                         Water                pCi/L                        Mn-54                 3.06E+02                  2.92E+02                      1.05                  Acceptable EZA              4th/2014              03/10/15       E11060                                         Water                pCi/L
* lron-59                2.51E+02                  2.26E+02                      1.11                  Acceptable EZA              4th/2014              03/10/15       E11060                                         Water                pCi/L                       Zinc-65                4.20E+02                  3.84E+02                      1.09                  Acceptable EZA              4th/2014             .03/10/15       E11060                                         Water                pCi/L                     Cobalt-60                3.24E+02                  3.04E+02                      1.06                  Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Barium-133                    73.2                      67.6                    56.4-74.4                Acceptable .
ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Cesium-134                    51.9                       51.3                   41.3-56.4                Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Cesium-137                     142                       124                     112-139                Not Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                     Cobalt-60                   62.7                       62.4                   56.2-71.2                Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                       Zinc-65                    107                       98.7                   88.8-118                 Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Gross Alpha                   67.2                       62.3                   32.6-77.3                Acceptable C-9

Donald C. Cook Nuclear Plant                                      Annual Radiological Environmental Operating Report 2015 ERA      1st/ 2015 02/23/15  RAD-100  Water             Gross Beta                      48.9                      Acceptable ERA      1st/ 2015 02/23/15  RAD-100  Water             Gross Al ha                     62.3      32.6-77.3 ERA      1st/ 2015 02/23/15  RAD-100  Water             Radium-226         16.1         16.8      12.5-19.2 ERA      1st/2015  02/23/15  RAD-100  Water             Radium-226         16.9         16.8      12.5-19.2 ERA      1st/ 2015 02/23/15  RAD-100  Water             Radium-226         16.8         16.8      12.5-19.2       Acceptable ERA      1st/ 2015 02/23/15  RAD-1 00 Water             Radium-228         4.50         5.12      3.07-6.85 ERA      1st/ 2015 02/23/15  RAD-1 00 Water             Radium-228         7.40         5.12      3.07-6.85 ERA      1st/ 2015 02/23/15  RAD-100  Water            Uranium (Nat        11.0         10.6      8.27-12.2       Acceptable ERA      1st/ 2015 02/23/15  RAD-100  Water                                16.4         15.5      12.1-17.9 ERA      1st/ 2015 02/23/15  RAD-100  Water                                11.3         10.6      8.27-12.2 ERA      1st/ 2015 02/23/15  RAD-100  Water                                17.1         15.5      12.1-17.9       Acceptable ERA      1st/ 2015 02/23/15  RAD-100  Water                Tritium        10000        10600     9220-11700 ERA      1st/ 2015 02/23/15  RAD-100  Water            Strontium-89        47.3         52.1      41.2-59.6 ERA      1st/2015  02/23/15  RAD-100  Water            Strontium-90        26.7         32.4     *23.7-37.5 ERA      1st/ 2015 02/23/15  RAD-'100 Water            Strontium-89        54.6         52.1      41.2-59.6 ERA      1st/ 2015 02/23/15  RAD-100                   Strontium-90        24.6         32.4      23.7-37.5 EZA       1st/2015 05/21/15  E11174                      lodine-131     8.01E+01     7.74E+01        1.03 EZA       1st/2015 05/21/15  E11175    Milk            Strontium-89     9.75E+01     1.05E+02        0.93         Acceptable EZA       1st/2015 05/21/15  E11175    Milk            Strontium-90     1.10E+01     1.44E+01        0.77 EZA       1st/2015 05/21/15  E11176    Milk              lodine-131     9.60E+01     9.75E+01        0.98 EZA       1st/2015 05/21/15  E11176    Milk             Cerium-141      2.13E+02     2.11E+02        1.01 EZA       1st/2015 05/21/15  E11176    Milk            Chromium-51      5.88E+02     5.55E+02      . 1.06         Acceptable EZA       1st/2015 05/21/15  E11176    Milk             Cesium-134      1.71E+02     1.91 E+02        0.9 EZA       1st/2015 05/21/15  E11176    Milk             Cesium-137      2.59E+02     2.53E+02        1.02 EZA       1st/2015 05/21/15  E11176    Milk               Cobalt-58     2.64E+02     2.72E+02        0.97 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L     Man anese-54      2.43E+02     2.40E+02        1.01 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L          lron-59      3.14E+02     2.95E+02        1.06 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L          Zinc-65      4.67E+02     4.53E+02        1.03 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L         Cobalt-60     4.81E+02     4.98E+02        0.97         Acceptable EZA       1st/2015 05/21/15  E11175   Water  Ci/L        lodine-131     9.92E+01     9.67E+01        1.03 EZA       1st/2015 05/21/15  E11177   Water  Ci/L       Cerium-141      1.40E+02     1.39E+02        1.01 EZA       1st/2015 05/21/15  E11177   Water pCi/L      Chromium-51      3.95E+02     3.66E+02        1.08 .       Acceptable C-10

Donald C. Cook Nuclear Plant                                                          Annual Radiological Environmental Operating Report 2015
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EZA       1st/2015     05/21/15   E11177          Water    pCi/L          Cesium-134         1.12E+02                1.26E+02                0.89    Acceptable EZA       1st/2015     05/21/15   E11177          Water    PCi/L          Cesium-137        *1.69E+02                1.67E+02                1.01    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L           Cobalt-58         1.78E+02                1.80E+02                0.99    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L        Manoanese-54         1.66E+02                1.59E+02                1.05    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L            lron-59          2.14E+02                1.95E+02                1.10    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L            Zinc-65          3.25E+02                2.99E+02                1.09    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L           Cobalt-60         3.23E+02                3.28E+02                0.98    Acceptable MAPEP    2nd/2015      06/16/15   E11177          Filter Sq/sample       Gross Alpha            1.520                  1.770              0.53-3.01  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP GrF32 Filter Sq/sample        Gross Beta            0.844                  0.750              0.38-1.13  Acceptable MA PEP   2nd/2015
* 06/16/15   MAPEP GrF32  Soil    Bq/Kq        Americium-241           114.0                   97.0                68-126   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaS32   Soil    Bq/Kq          Cesium-134             639                    678               475-881    Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15 MaS32   Soil    Bq/Kg          Cesium-137           -0.279                             False Pos Test     Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq           Cobalt-57            0.369                             False Pos Test     Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg           Cobalt-60             852                    817               572-1062   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg            lron-55              330                    205              Sens. Eval. Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq        Manganese-54            1280                   1198               839-1557   Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq           Nickel-63             481                    448                314-582   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg        Plutonium-238            80.3                   83.9             58.7-109.1  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg      Plutonium-239/240          69.1                   70.8              49.6-92.0  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg         Potassium-40            684                    622               435-809    Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg         Strontium-90            601                    653               457-849    Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil. Bq/Kq        Technetium-99            694                    867               607-1127   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaS32   Soil    Bq/Kq           U-234/233              58                     53               36.8-68.3  Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq         Uranium-238             204                    201                141-261   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg            Zinc-65           1190.0                   1064               745-1383   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaW32 Water     Bq/L        Americium-241           0.657                  0.654            0.458-0.850  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L          Cesium-134            20.80                   23.5              16.5-30.6  Acceptable MA PEP   2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L          Cesium-137             19.7                   19.1              13.4-24.8  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L           Cobalt-57              30                    29.9              20.9-38.9  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L           Cobalt-60              0.0                             False Pos Test     Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L          Hydrogen-3             633                    563                394-732   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L            lron-55              8.81                   6.88              4.82-8.94  Acceptable MA PEP   2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L        Manganese-54            0.314                             False Pos Test     Acceptable MA PEP   2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L           Nickel-63            0.350                             False Pos Test     Acceptable C-11

Donald C. Cook Nuclear Plant                                            Annual Radiological Environmental Operating Report 2015 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water                             0.770       0.832 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water        Potassium-40         0.159                 False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water        Strontium-90          8.49        9.48       6.64-12.32 MA PEP   2nd/2015  06/16/15   MAPEP-15-MaW32  Water       Technetium-99          2.90        3.18        2.23-4.13 MA PEP   2nd/2015  06/16/15   MAPEP-15-MaW32  Water      Uranium-234/233         0.146       0.148     0.104-0.192 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water        Uranium-238          0.918       0.970        0.68-1.26 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water           Zinc-65          19.600        18.30       12.8-23.8 MA PEP   2nd/2015  06/16/15   MAPEP-15-GrW32  Water         Gross Al ha          1.050       1.066     0.320-1.812 MAPEP    2nd/2015  06/16/15   MAPEP-15-GrW32  Water         Gross Beta          3.220        2.79        1.40-4.19 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Uranium-235           0.014       0.015    0.0103-0.0191 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Uranium-238           7.65        7.96       5.57-10.35 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter      Uranium-Total          7.96          8.0      5.58-10.36 MAPEP    2nd/2015  06/16/15   MAPEP-15-Rd F32 Filter      Americium-241        0.0657        0.068    0.0477-0.0885 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter        Cesium-134          1.0600        1.15       0.81-1.50 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdF32  Filter        Cesium-137         0.0166                 False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-Rd F32 Filter         Cobalt-57           1.590        1.51       1.06-1.96 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter         Cobalt-60
* 0.016                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter      Man anese-54           0.998        1.02       0.71-1.33 MAPEP    2nd/2015  06/16/15  .MAPEP-15-RdF32  Filter      Plutonium-238        0.00005                False Pos Test    Acceptable MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter    Plutonium-239/240       0.0788      0.0847    0.0593-0.1101     Acee table MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Strontium-90         -0.025                False Pos Test    Acceptable MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter    Uranium-234/233          0.017      0.0155    0.0109-0.0202 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Uranium-238          0.0958       0.099     0.069-0.129 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32                  Zinc-65            0.867       0.83        0.58-1.08 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32              Americium-241          0.116        0.11     0.076-0.140 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32                Cesium-134           6.44        7.32        5.12-9.52 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32                Cesium-137           9.30        9.18       6.43-11.93 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32                 Cobalt-57           0.037                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32                 Cobalt-60           5.680       5.55        3.89-7.22 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32              Man anese-54           0.009                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32              Plutonium-238          0.084       0.085     0.060-0.111 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32            Plutonium-239/240       0.0898       0.094     0.066-0.122 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32               Strontium-90          0.852        1.08       0.76-1.40 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32             Uranium-234/233         0.023       0.022    0.0153-0.0283 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32               Uranium-238           0.129       0.128     0.090-0.166 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32                  Zinc-65          -0.0058                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-SrF-32 Filter       Strontium-89          41.7         47.5       33.3-61.8 C-12

Donald C. Cook Nuclear Plant                                          Annual Radiological Environmental Operating Report 2015 MAPEP    2nd/2015  06/16/15  MAPEP-15-XaW-32 Water                              1.72       1.49        1.04-1.94 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Actinium-228           1090        1250       802-1730 ERA      2nd/2015  05/19/15  MRAD-22          Soil     Americium-241           1410        1500       878-1950 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Bismuth-212           1090        1780       474-2620 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Bismuth-214           4340        4430       2670-6380 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Cesium-134            6020        6390      4180-7680 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Cesium-137            1540        1490       1140-1920 ERA      2nd/2015  05/19/15  MRAD-22          Soil        Cobalt-60            2010        1880       1270-2590 ERA      2nd/2015  05/19/15. MRAD-22          Soil        Lead-212             1200        1230        806-1710 ERA      2nd/2015  05/19/15  MRAD-22          Soil        Lead-214             4890        4530       2640-6760 ERA      2nd/2015  05/19/15  MRAD-22          Soil     Man anese-54            <49.9      <1000         0-1000 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Plutonium-238           978         998       600-1380 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Plutonium-239          1240        1210       791-1670 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Potassium-40          10900       10700      7810-14400       Acceptable ERA      2nd/2015  05/19/15  MRAD-22          Soil       Strontium-90          1230        1940        740-3060 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Thorium-234           3840        3890       1230-7320 ERA      2nd/2015  05/19/15  MRAD-22          Soil          Zinc-65            8030        7130      5680-9470        Acceptable ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-234           3754        3920       2400-5050       Acee table ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-238           3565        3890       2410-4930       Acceptable ERA      2nd/2015  05/19/15  MRAD-22          Soil      Uranium-Total          7319        7990      4330-10500 ERA      2nd/2015  05/19/15  MRAD-22          Soil   Uranium-Total mass        8030        7130       5680-9470 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-234           4040        3920       2400-5050 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-238           4230        3890       2410-4930 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Uranium-Total          8477        7990      4330-10500 ERA      2nd/2015  05/19/15  MRAD-22          Soil   Uranium-Total mass        8030        7130       5680-9470 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-234           4480.       3920       2400-5050 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-238           4020        3890       2410-4930 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Uranium-Total          8683        7990      4330-10500 ERA      2nd/2015  05/19/15  MRAD-22          Soil   Uranium-Total mass        12000       7130       5680-9470 ERA      2nd/2015  05/19/15  MRAD-22                 Uranium-Total mass        12800      11600      6390-14600 ERA      2nd/2015  05/19/15  MRAD-22                     Uranium-234           3480        3150       2070-4050 ERA      2nd/2015  05/19/15  MRAD-22                     Uranium-238           3090        3130       2090-3980 ERA      2nd/2015  05/19/15  MRAD-22                    Uranium-Total        . 6716        6420       4350-7990 ERA      2nd/2015  05/19/15  MRAD-22                 Uranium-Total mass        9370     6280-11900    3540-6710 ERA      2nd/2015  05/19/15  MRAD-22                        Am-241             5130        4340       2650-5770 ERA      2nd/2015  05/19/15  MRAD-22                     Cesium-134            2210        2650       1700-3440 ERA      2nd/2015  05/19/15  MRAD-22                     Cesium-137            1790        1810       1310-2520 C-13

Donald C. Cook Nuclear Plant                                                                                                       Annual Radiological Environmental Operating Report 2015
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Value'"''''T*N: .. . value*.*~*.,::                      ~f&#xa5;;f;.: ~' Evalu~ti'* . . **
1:
ERA           2nd/2015         05/19/15       MRAD-22                         Veaetation          pCi/kq               Cobalt-60                    1570                1540                 1060-2150                   Acceotable ERA           2nd/2015         05/19/15       MRAD-22                         Veaetation          oCi/kq              Curium-244                   1370                 1360                  666-2120                   Acceptable ERA           2nd/2015         05/19/15       MRAD-22                         Veaetation          pCi/ka            Manganese-54                   <31.1                <300                    0-300                    Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg            Plutonium-238                  4700                 3680                 2190-5040                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation          pCi/kq            Plutonium-239                  5120                 4180                 2570-5760                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg             Potassium-40                  33100              30900                22300-43400                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation          pCi/ka             Strontium-90                  5920                 6590                 3760-8740                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veoetation          pCi/kq             Uranium-234                   3230                 3150                 2070-4050                   Acceptable ERA          _ 2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg             Uranium-238                   3340                 3130                 2090-3980                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg            Uranium-Total                  6742                 6420                 4350-7990                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation           ua/ka         Uranium-Total(mass)               10000                9370                 3540-6710                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation           ua/ka         Uranium-Total(mass)               8780                 5280                 3540-6710                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veoetation          pCi/kq            Uranium-Total                  8780                 6420                 4350-7990                Not Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation          oCi/kq                Zinc-65                     1250                1090                  786-1530                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter         Americium-241                    50.2                49.8                  30.7-67.4                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter            Cesium-134                     951                 909                  578-1130                   Acceptable ERA            2nd/2015.       05/19/15       MRAD-22                             Filter        pCi/Filter            Cesium-137                    1320                1170                  879-1540                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter             Cobalt-60                    87.6                79.1                  61.2-98.8                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter              lron-55                      879               836.0                  259-1630                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Manoanese-54                   <6.09                 <50                  0.00-50.0                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ug/Filter          Plutonium-238                   57.1                52.1                  35.7-68.5                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Plutonium-239                   46.0                40.3                  29.2-52.7                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Strontium-90                   84.6                96.6                  47.2-145                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-234                    34.7                34.3                 21.3-51.7                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-238                    34.5                34.0                  17.8-38.2                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Uranium-Total                   70.9                69.9                   38.7-106                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ua/Filter       Uranium-Total(mass)                 103                 102                   65.3-144                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter              Zinc-65                     1190                 986                  706-1360                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-234                    39.2                34.3                  21.3-51.7                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-238                    34.9                34.0                  17.8-38.2                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Uranium-Total                   75.7                69.9                   38.7-106                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ua/Filter       Uranium-Total(mass)                 105                 102                   65.3-144                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ug/Filter       Uranium-Total(mass)                95.5                 102                  52.9-116                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22
* Filter        pCi/Filter           Gross Aloha                    77.2                62.2                  20.8-96.6                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter            Gross Beta                    62.7                58.4                  36.9-85.1                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                            Water             pCi/L            Americium-241                   48.5                46.0                  31.0-61.7                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                            Water             pCi/L              Cesium-134                    1180                1260                  925-1450                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                            Water             pCi/L              Cesium-137                    1410                1360                 1150-1630                   Acceptable C-14

Donald C. Cook Nuclear Plant                                       Annual Radiological Environmental Operating Report 2015 ERA      2nd/2015  05/19/15  MRAD-22  Water             lron-55             1080        1070       638-1450 ERA      2nd/2015  05/19/15  MRAD-22  Water        Man anese-54             <5.41       <100       0.00-100 ERA      2nd/2015  05/19/15  MRAD-22  Water         Plutonium-238            81.0        72.4      53.6-90.1 ERA      2nd/2015  05/19/15  MRAD-22  Water         Plutonium-239            205         184        143-232 ERA      2nd/2015  05/19/15- MRAD-22  Water          Strontium-90            865         912       594-1210 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-234             68.5.       61.8      46.4-79.7 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-238             71.8        61.3      46.7-75.2 ERA      2nd/2015  05/19/15  MRAD-22  Water         Uranium-Total            140         126       92.6-163 ERA      2nd/2015  05/19/15  MRAD-22  Water      Uranium-Total mass          214          184       147-222 ERA       2nd/2015 05/19/15  MRAD-22  Water             Zinc-65              1310        1180      984-1490 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-234             60.7        61.8      46.4-79.7 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-238             58.0        61.3      46.7-75.2 ERA      2nd/2015  05/19/15  MRAD-22  Water         Uranium-Total             121        126       92.6-163 ERA      2nd/2015  05/19/15  MRAD-22  Water      Uranium-Total(mass           174         184       147-222 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-234             64.1        61.8      46.4-79.7 ERA       2nd/2015 05/19/15  MRAD-22  Water          Uranium-238             60.4        61.3      46.7-75.2 ERA       2nd/2015 05/19/15  MRAD-22  Water         Uranium-Total             127         126      92.6-163        Acceptable ERA       2nd/2015 05/19/15  MRAD-22  Water      Uranium-Total mass)          181         184       147-222 ERA       2nd/2015 05/19/15  MRAD-22  Water      Uranium-Total(mass           176         184       147-222 ERA       2nd/2015 05/19/15  MRAD-22  Water          Gross Al ha              128         119      42.2-184 ERA       2nd/2015 05/19/15  MRAD-22  Water           Gross Beta            155.0       158.0      90.5-234 ERA       2nd/2015 05/19/15  MRAD-22  Water             Tritium             10600       10300     6900-14700 ERA       2nd/2015 05/26/15  RAD-101  Water           lodine-131             18.2        23.8      19.7-28.3 ERA       2nd/2015 05/26/15  MRAD-22  Water           lodine-131             23.5        23.8      19.7-28.3 EZA       2nd/2015 08/06/15  E11216  Cartrid e        lodine-131          8.92E+01    8.01E+01        1.11 EZA       2nd/2015 08/06/15  E11217    Milk          Strontium-89         9.13E+01    9.26E+01        1.11 EZA       2nd/2015 08/06/15  E11217    Milk          Strontium-90         1.16E+01    1.27E+01        0.91 EZA       2nd/2015 08/06/15  E11218    Milk           lodine-131          1.05E+02    9.59E+01        1.10 EZA       2nd/2015 08/06/15  E11218    Milk          Cerium-141          -2.70E+OO    Not Pres.
EZA       2nd/2015 08/06/15  E11218    Milk         Chromium-51           2.70E+02    2.76E+02        0.98 EZA       2nd/2015 08/06/15  E11218    Milk          Cesium-134           1.46E+02    1.63E+02        0.90 EZA       2nd/2015 08/06/15  E11218    Milk          Cesium-137           1.31 E+02   1.25E+02        1.05 EZA       2nd/2015 08/06/15  E11218    Milk            Cobalt-58          7.1.8E+01   6.84E+01        1.05 EZA       2nd/2015 08/06/15  E11218    Milk         Man anese-54          1.02E+02    1.01 E+02       1.01 EZA       2nd/2015 08/06/15  E11218    Milk             lron-59           1.51 E+02   1.51E+02        1.00 EZA       2nd/2015 08/06/15  E11218    Milk             Zinc-65           2.63E+02    2.48E+02        1.06 EZA       2nd/2015 08/06/15  E11218    Milk            Cobalt-60          1.96E+02    1.93E+02        1.02 C-15

Donald C. Cook Nuclear f>lant                                                                                            Annual Radiological Environmental Operating Report 2015
        .             .* Repo'rt       . .:.:.    :  '
PT        Quarter I Provider: ', . Year
                       .Rece,ived Date
                                       *'f~<~  ':",., .
Sampfo'Number *
                                                             .\.
                                                                       .Sample Media )~:;:'dnit     >'AfX~i'yte I Nuclide . ~:!i~
* GEL Value*
                                                                                                                                        *\,;f':. ,*
Known
                                                                                                                                                     'value
                                                                                                                                                              >,-;:Acceptance, N:.: :Range/ Ratio .. "
                                                                                                                                                                                    +,
                                                                                                                                                                                                   .*~~- ~**
Evaluatio'ri' *. ' :
EZA         2nd/2015     08/06/15  E11219                                  Water      oCi/L            lodine-131               9.53E+01            9.34E+01            1.02             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      oCi/L           Cerium-141                1.24E-01            Not Pres.             -              Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L          Chromium-51                3.47E+02            2.93E+02            1.18             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L           Cesium-134                1.63E+02            1.73E+02            0.94             Acceotable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L           Cesium-137                1.34E+02            1.33E+02            1.01             Acceotable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L             Cobalt-58               7.21 E+01           7.26E+01            0.99             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L         Manoanese-54                1.17E+02            1.07E+02            1.10             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      oCi/L              lron-59                1.76E+02            1.61E+02            1.09             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water    . pCi/L              Zinc-65                2.85E+ci2           2.64E+02            1.08             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L             Cobalt-60               2.10E+02            2.05E+02            1.03             Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L           Barium-133                   63.9                64.7          53.9-71.2           Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L           Cesiurn-134                  45.2                50.1          40.3-55.1           Acceotable ERA         3rd/ 2015    08/25/15  RAD - 102                               Water      oCi/L           Cesium-137                   90.5                89.9           80.8-101           Acceotable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L             Cobalt-60                  58.7                59.9          53.9-68.4           Acceotable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L              Zinc-65                   282                 265            238-310            Acceptable ERA         3rd/ 2015    08/25/15  RAD - 102                               Water      pCi/L           Gross Aloha                  37.1                34.5          17.7-44.5           Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L           Gross Beta                   26.2                25.1          15.6-33.1           Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L           Gross Alpha                  35.3                34.5          17.7-44.5           Acceptable ERA         3rd/ 2015    08/25/15  RAD- 102                                Water      pCi/L           Radium-226                   15.9                15.2           11.3-17.4          Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L           Radium-226                   15.7                15.2           11.3-17.4          Acceotable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L           Radium-226                   15.1                15.2          11.3-17.4
* Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      pCi/L           Radium-228                   5.31                5.12          3.13-6.95           Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      pCi/L           Radium-228                   5.14                5.12          3.13-6.95           Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L          Uranium !Nat)                 24.2                 24           19.3-27.0           Acceotable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      ua/L       Uranium (Natl mass                37.9                 35           28.1-39.4           Acceptable ERA         3rd/ 2015    08/25/15  RAD - 102                               Water      pCi/L          Uranium (Nat)                 23.4                 24            19.3-27.0          Acceptable ERA         3rd/2015     08/25/15  RAD-102                                 Water      ug/L       Uranium (Nat) mass                34.9                 35           28.1-39.4           Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L              Tritium                  14500               15600         13600-17200         *Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L          Strontium-89                  24.1                42.1          32.3-49.2         Not Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L          Strontium-90                  27.7                26.8           19.4-31.2          Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L            lodine-131                  24.7                25.7          21.3-30.3           Acceptable EZA          3rd/2015    11/15/15  E11310                             Cartridoe        pCi             lodine-131               8.21E+01            8.15E+01            1.01             Acceptable EZA          3rd/2015    11/15/15  E11311                                   Milk      pCi/L          Strontium-89               8.79E+01            9.91E+01            0.89             Acceotable EZA          3rd/2015    11 /15/15 E11311                                   Milk      oCi/L          Strontium-90               1.07E+01            1.64E+01            0.65             Acceptable EZA          3rd/2015    11/15/15  E11312                                   Milk      pCi/L            lodine-131               9.61 E+01           9.99E+01            0.96             Acceptable EZA          3rd/2015    11/15/15  E11312                                   Milk      pCi/L           Cerium-141                2.15E+02            2.13E+02            1.01             Acceotable EZA          3rd/2015    11/15/15  E11312                                   Milk      oCi/L          Chromium-51                5.82E+02            5.38E+02            1.08             Acceotable EZA          3rd/2015    11/15/15  E11312                                   Milk      pCi/L           Cesium-134                1.89E+02            2.12E+02            0.89             Acceptable
                                                                                            . C-16

Donald C. Cook Nuclear Plant                                                 Annual Radiological Environmental Operating Report 2015 EZA       3rd/2015  11/15/15  E11312          Milk                                                              0.95 EZA       3rd/2015  11/15/15  E11312          Milk             Man anese-54        3.02E+02     2.90E+02        1.04 EZA       3rd/2015  11/15/15  E11312          Milk                 lron-59         2.30E+02     2.26E+02        1.02 EZA       3rd/2015  11 /15/15 E11312          Milk                 Zinc-65         3.62E+02     3.53E+02        1.02 EZA       3rd/2015  11/15/15  E11312          Milk                Cobalt-60        3.42E+02     3.30E+02        1.04 EZA       3rd/2015  11/15/15  E11313.        Water               lodine-131        1.00E+02     9.67E+01        1.03 EZA       3rd/2015  11/15/15  E11313         Water               Cerium-141        2.05E+02     1.99E+02        1.03 EZA       3rd/2015  11/15/15  E11313         Water             Chromium-51         5.42E+02     5.02E+02        1.08 EZA       3rd/2015  11/15/15  E11313         Water               Cesium-134        1.75E+02     1.98E+02        0.89 EZA       3rd/2015  11/15/15  E11313         Water               Cesium-137        2.40E+02     2.38E+02        1.01 EZA       3rd/2015  11/15/15  E11313         Water                Cobalt-58        2.45E+02     2.46E+02        1.00 EZA       3rd/2015  11/15/15  E11313         Water             Man anese-54
* 2.88E+02     2.71E+02        1.06 EZA       3rd/2015  11/15/15  E11313         Water                 lron-59         2.31E+02     2.11E+02        1.10 EZA       3rd/2015  11/15/15  E11313         Water                 Zinc-65         3.75E+02     3.30E+02        1.14 EZA       3rd/2015  11/15/15  E11313         Water  pCi/L         Cobalt-60        3.11E+02     3.08E+02        1.01         Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-GrF33 Filter             Gross Al ha          0.999        0.900      0.27-1.53       Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-GrF33 Filter              Gross Beta          1.570        1.560      0.78-2.34       Acceptable MAPEP    4th /2015  12/03/1.5 MAPEP-15-MaS33  Soil            Americium-241           61.7         49.5      34.7-64.4        Warn in MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil               Cesium-134            933         1010      707-1313        Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil               Cesium-137         861.00         809       566-1052        Acee table MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                Cobalt-57           1240         1180      826-1534        Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                Cobalt-60           2.45         1.30     Sens. Eval.
MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                 lron-55             557         555        389-722 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil             Man anese-54           1450         1340      938-1742 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil                Nickel-63            625         682        477-887 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil             Plutonium-238         100.00       97.50      68.3-126.8 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil           Plutonium-239/240        76.7         80.4      56.3-104.5 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil              Potassium-40           687         599        419-779 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil              Strontium-90           403         425        298-553 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil             Technetium-99           639         631        442-820 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                U-234/233             59          56         39-73 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil              Uranium-238            208         220        154-286 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil                 Zinc-65           761.0         662        463-861 MAPEP    4th /2015  12/03/15  MAPEP-15-MaW33 Water             Americium-241          1.030       1.055     0.739-1.372 MAPEP     4th /2015 12/03/15  MAPEP-15-MaW33 Water               Cesium-134          21.20         23.1       16.2-30.0 MAPEP     4th /2015 12/03/15  MAPEP-15-MaW33 Water               Cesium-137         0.00355                False Pos Test MAPEP     4th /2015 12/03/15  MAPEP-15-MaW33 Water                Cobalt-57             21         20.8       14.6-27.0 C-17

Donald C. Cook Nuclear Plant                                                           Annual Radiological Environmental Operating Report. 2015 tr:;#~!~':;ti~~mi~rl-1                                                                                           c* r~?:~-~
MAPEP    4th/2015  12/03/15  MAPEP-15-MaW33      Water       Ba/L           Cobalt-60          17.5         17.1        12.0-22.2       Acceotable MAPEP    4th /2015 12/03i15  MAPEP-15-MaW33      Water       Ba/L          Hvdroaen-3           212          216         151-281        Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L            lron-55           12.7         13.1        9.2-17.0      , Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Bq/L        Manganese-54           15.9        15.6        10.9-20.3       Acceotable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L           Nickel-63           8.7          8.6       5.99-11.12       Acceotable MAPEP    4th /2015 12/03/15. MAPEP-15-MaW33      Water       Bq/L        Plutonium-238         0.607       0.681      0.477-0.885       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Bq/L      Plutonium-239/240       0.843       0.900      0.630-1.170       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33. Water       Bq/L         Potassium-40          210          214         150-278        Acceptable MAPEP    4th /2015 12/03/15  .MAPEP-15-MaW33     Water       Ba/L         Strontium-90         4.06         4.80        3.36-6.24       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-MaW33     Water       Ba/L        Technetium-99          7.27        7.19        5.03-9.35       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-MaW33     Water       Ba/L       Uranium-234/233        1.130        1.140       0.80-1.48       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L         Uranium-238          1.180        1.180       0.83-1.53       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L            Zinc-65            14.7        13.9         9.7-18.1       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-GrW33      Water       Ba/L         Gross Alpha          0.425       0.429      0.129-0.729       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-GrW33      Water       Bq/L          Gross Beta           3.59        3.52        1.76-5.28       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample       Uranium-235         0.0769       0.086      0.060-0.112       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample       Uranium-238           11.2 __,     11.9        8.3-15.5       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample      Uranium-Total         11.30         12.0        8.4-15.6       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample      Americium-241        0.1550        0.147     0.103-0.191       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-Rd F33     Filter   Bq/sample        Cesium-134         2.2900        2.45        1.72-3.19       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Sq/sample        Cesium-137          1.940         1.96       1.37-2.55       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample         Cobalt-57          2.870        2.74        1:92-3.56       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Sq/sample         Cobalt-60          1.800         1.71       1.20-2.22       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample      Manganese-54         22.200        2.11        1.48-2.74       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample      Plutonium-238         0.099       0.104      0.073-0.135       Acceptable MAPEP    4th /2015 12/03/15  l\JiAPEP-15-RdF33   Filter   Ba/sample    Plutonium-239/240       0.004       0.0025     Sens. Eval.       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample       Strontium-90         2.090        2.18        1.53-2.83       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Sq/sample     Uranium-234/233        0.153        0.143     0.100-0.186       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample       Uranium-238          0.159        0.148     0.104-0.192       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample          Zinc-65           1.560         1.32       0.92-1.72       Acceptable MA PEP   4th /2015 12/03/15   MAPEP-15-RdV33   Veaetation Ba/sample      Americium-241         0.128         0.11     0.076-0.140       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-RdV33   Vegetation Ba/samole        Cesium-134          5.180         5.80       4.06-7.54       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdV33    Vegetation Ba/sample        Cesium-137         0.0326                 False Pas Test     Acceptable MAPEP    4th /2015 12103/15  MAPEP-15-RdV33    Veaetation Ba/sample         Cobalt-57          6.980        6.62        4.63-8.61       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-RdV33   Vegetation Ba/sample         Cobalt-60          4.810        4.56        3.19-5.93       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-RdV33   Vegetation Ba/sample      Manganese-54          7.840        7.68        5.38-9.98       Acceptable MA PEP   4th /2015 12/03/15   MAPEP-15-RdV33   Veaetation Ba/sample      Plutonium-238       0.000495      0.0007     Sens. Eval.       Acceptable MA PEP   4th /2015 12/03/15   MAPEP" 15-RdV33  Vegetation Ba/samole    Plutonium-239/240      0.0654        0.077     0.054-0.100       Acceptable C-18

Donald C. Cook Nuclear Plant                                            *Annual Radiological Environmental Operating Report 2015 MAPEP                                                                                                    0.91-1.69 MA PEP   4th /2015  12/03/15 MAPEP-15-RdV33                                      0.192       0.162      0.113-0.211 MAPEP    4th /2015  12/03/15 MAPEP-15-RdV33               Uranium-238            0.192       0.168      0.118-0.218 MAPEP    4th /2015  12/03/15 MAPEP-15-RdV33                   Zinc-65            6.120        5.46       3.82-7.10 MAPEP    4th /2015  12/03/15 MAPEP-15-RdF33                Gross Al ha           0.999        0.900       0.27-1.53 MAPEP    4th /2015  12/03/15 MAPEP-15-RdF33
* Filter        Gross Beta            1.57         1.56       0.78-2.34 MA PEP   4th /2015  12/03/15 MAPEP-15-SrF-33  Filter      Strontium-89           3.313        3.98       2.79-5.17 MA PEP   4th /2015  12/03/15 MAPEP-15-SrF-33  Filter      Strontium-90           0.862         1.05       0.74-1.37 ERA      3rd I 2015 11/24/15 MRAD-23          Soil        Actinium-228           1220         1240        795-1720 ERA      3rd I 2015 11/24/15 MRAD-23          Soil       Americium-241            667          539         315-700 ERA      3rd I 2015 11/24/15 MRAD-23          Soil         Bismuth-212           1240         1240        330-1820 ERA      3rd I 2015 11/24/15 MRAD-23          Soil         Bismuth-214           1690         2660       1600-3830 ERA      3rd I 2015 11/24/15 MRAD-23          Soil         Cesium-134            2250         2420       1580-2910 ERA      3rd/2015   11/24/15 MRAD-23          Soil         Cesium-137            5400         5120       3920-6590 ERA      3rd I 2015 11/24/15 MRAD-23          Soil           Cobalt-60           4290         3900       2640-5370 ERA      3rd I 2015 11/24/15 MRAD-23           Soil          Lead-212            1290         1240        812-1730 ERA      3rd I 2015 11/24/15 MRAD-23           Soil          Lead-214            2090         2800       1630-4180 ERA      3rd I 2015 11/24/15 MRAD-23           Soil      Man anese-54            <29.7       <1000          0-1000 ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Plutonium-238            934         864        519-1190       Acceptable ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Plutonium-239            982         969        633-1340       Acee table ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Potassium-40           11700.      10600      7740-14200       Acceptable ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Strontium-90          7490         8820      3360-13900       Acceptable ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Thorium-234           3760         3330       1050-6260 ERA      3rd I 2015 11/24/15 MRAD-23           Soil           Zinc-65            4610         3620       2880-4810 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uranium-234           2659         3360       2050-4310 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uranium-238           2831         3330       2060-4220 ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Uranium-Total          5490         6850       3720-9040 ERA      3rd I 2015 11/24/15 MRAD-23           Soil    Uranium-Total mass        8420         9990      5510-12600 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uranium-234           2970         3360       2050-4310 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uraniuni-238          3010         3330       2060-4220 ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Uranium-Total           6091        6850       3720-9040 ERA      3rd I 2015 11/24/15 MRAD-23           Soil    Uranium-Total mass        8990         9990      5510-12600 ERA      3rd I 2015 11/24/15 MRAD-23                   Uranium-Total mass         8470        9990      5510-12600 ERA      3rd I 2015 11/24/15 MRAD-23                          Am-241              1780        1590        972-2110 ERA      3rd I 2015 11/24/15 MRAD-23                       Cesium-134              652         748         481-972 ERA      3rd I 2015 11/24/15 MRAD-23                       Cesium-137             1140        1230        892-1710 ERA      3rd/2015   11/24/15 MRAD-23                         Cobalt-60            1870         1930      1330-2700 ERA      3rd I 2015 11/24/15 MRAD-23                        Curium-244            2910        3230       1580-5030 C-19

Donald C. Cook Nuclear Plant                                                                                            Annual Radiological Environmental Operating Report 2015
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Report
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                                                                ;;;sample *:;< H{::f;i~Y~,-.                                         GEw       "    Known*   *+::Acceptance*~;~~ ,                          -
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                                                                                   "('         ',                                                                                                   ~,,_ -~
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*Provider:  "Year      * ,, ::'Date , ,   safopl~ :Number  *'
                                                                 *:.Media       .',/,,;;Unit         , Ah.ilyte/ Nuclide Value / ;n *' , value  *   '; Range/ Ratio.  "' Evalu.ati6rff~1'.*.'
ERA       3rd/ 2015       11 /24/15    MRAD-23                    Veaetation            pCi/ka           Manaanese-54              <45.2            <300              0-300        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/ka           Plutonium-238             4720             3920          2340-5370        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/kg           Plutonium-239             2630             2390           1470-3290       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Veaetation            pCi/kq           Potassium-40              31200           31000         22400-43500       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Ver:ietation          pCi/kq            Strontium-90             7590             7160          4080-9490        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/kg            Uranium-234              4280             4010          2640-5150        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Ver:ietation          pCi/kq            Uranium-238               4620            3970          2650-5040        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/kg           Uranium-Total              9155            8160          5530-10200       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Veqetation             UQ/kq      Uranium-Total(mass)            13900           11900           3540-6710       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Ver:ietation           UQ/kq       Uranium-Total(mass)           13100           11900          7970-15100       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Veaetation            pCi/kg               Zinc-65                1530            1540           1110-2160       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter        Americium-241               35.1            36.8           22.7-49.8       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Cesium-134                 315            349.0           222-433        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Cesiurn-137                598             613            461-805        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter           Cobalt-60                 509             521            403-651        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter             lron-55                 546            595.0           184-1160       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter         Manqanese-54              <4.53             <50            0.00-50.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           uq/Filter          Plutonium-238              43.6             42.6           29.2-56.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter         Plutonium-239              63.6             63.8           46.2-83.4      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Strontium-90              37.1             45.7           22.3-68.5      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Uranium-234               38.4             43.0           26.7-64.8      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Uranium-238               39.3             42.7           27.6-59.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           PCi/Filter         Uranium-Total              80.1             87.7           48.'6-133      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           ug/Filter      Uranium-Total(mass)             118             128            81.9-180       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter             Zinc-65                 727             685             491-946       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Uranium-234               45.7             43.0           26.7-64.8      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           oCi/Filter          Uranium-238               43.4             42.7           27.6-59.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter         Uranium-Total              91.1             87.7           48.6-133       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           ug/Filter      Uranium-Total(mass)             130             128            81.9-180       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           uq/Filter      Uranium-Total(mass)             117             128            81.9-180       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           oCi/Filter          Gross Aloha                 98             77.3           25.9-120       Acceotable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter           Gross Beta               52.2             41.3           26.1-60.2      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                pCi/L           Americium-241               114             113            76.1-152       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 pCi/L           Cesium-134                 702             759             557-872       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 oCi/L           Cesium-137                 622             623             529-747       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 pCi/L            Cobalt-60                 927             896            778-1050       Acceotable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 pCi/L              lron-55                 196             212             126-288       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 oCi/L          Manaanese-54              <6.14            <100            0.00-100       Acceptable C-20

Donald C. Cook Nuclear Plant                                                                                Annual Radiological Environmental Operating Report 2015
                              *~eport                                                                                                        :.*:    .              >:*.
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: ~;:~;;;;::  * ' :**,:<sample                                        GEL        *.Known * :;'.,* Acceptance.: ~i**>** ,.
Provider.:;. . Year        * ';li>~te :~*;    Sample Number* * * '''<<~"Media **                                     Value ,. J;  : value *** :;;;::;Range/ Ratio '**:*: .:  Evaluation  ,"b;.
* ERA             3rd I 2015    11/24/15     MRAD-23                     Water      pCi/L      Plutonium-238           117            140                104-174              Acceotable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Plutonium-239           88.5           114               88.5-144              Acceotable ERA             3rd/2015      11/24i15     MRAD-23                     Water      pCi/L       Strontium-90           505            544                354-719              Acceptable ERA             3rd I 2015    11/24/15     MRAD-23                     Water      pCi/L      Uranium-234             49.2           48.5             36.4-62.6              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-238            49.7           48.1             36.7-59.0              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Uranium-Total           98.9           98.9              72.7-128              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ug/L    Uranium-Total(mass)        148            144                115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L          Zinc-65             786            712                594-898              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-234            45.8           48.5             36.4-62.6              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-238            44.4           48.1             36.7-59.0              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Uranium-Total           92.8           98.9              72.7-128              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ua/L    Uranium-Total(mass)       135.0          144.0               115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-234            49.5           48.5             36.4-62.6              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-238            43.1           48.1             36.7-59.0              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Uranium-Total            95            98.9              72.7-128              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ug/L    Uranium-Total(mass)        129            144                115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ug/L    Uranium-Total(mass)        135             144               115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Gross Alpha           104.0            136              48.3-211              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L        Gross Beta            61.6           53.7              30.7-79.6             Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L          Tritium            20500          21500            14400-30700             Acceptable ERA             3rd/ 2015     11/23/15     RAD - 103                   Water      pCi/L       Strontium-89            42            35.7              26.7-42.5             Acceptable ERA             3rd/ 2015     11/23/15     RAD - 103                   Water      pCi/L       Strontium-90           26.9           31.1              22.7-36.1             Acceptable ERA             3rd/2015      11/23/15     RAD - 103                   Water      PCi/L       Strontium-89           41.8           35.7             26.7-42.5              Acceptable ERA             3rd/2015      11/23/15     RAD - 103                   Water      pCi/L       Strontium-90            22            31.1             22.7-36.1             Not Acceptable EZA              4th/2015     02/18/16     E11412                     Cartridge    pCi         lodine-131         7.73E+01      7.98E+01                 0.97               Acceptable EZA              4th/2015     02/18/16     E11413                       Milk      pCi/L       Strontium-89        9.41 E+01     8.68E+01                 1.08               Acceptable EZA              4th/2015     02/18/16     E11413                       Milk      pCi/L       Strontium-90        9.74E+OO      1.25E+01                 0.78               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L        lodine-131         1.01 E+02     9.12E+01                 1.11               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L        Cerium-141         1.36E+02       1.29E+02                1.06               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk    . pCi/L      Chromium-51          2.79E+02      2.81E+02                 0.99               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L       Cesium-134          1.45E+02       1.60E+02                0.91               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      pCi/L       Cesium-137          1.15E+02       1.15E+02                1.00               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      pCi/L         Cobalt-58         1.06E+02       1.10E+02                0.96               Acceptable EZA              4th/2015     02/18/16. E11414                       Milk      pCi/L      Manganese-54         1.53E+02       1.45E+02                1.06               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      pCi/L          lron-59          1.19E+02       1.08E+02                1.10               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      PCi/L          Zinc-65          2.69E+02      2.48E+02                 1.08               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L         Cobalt-60         2.12E+02       2.13E+02                0.99               Acceptable C-21

Donald C. Cook Nuclear Plant                                                                                              Annual Radiological Environme_ntal Operating Report 2015
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                                         *. ;~~:<:~>~; "  ) ~)sample                                                                                                                  :.*>                  ,\{~,'-~:
PT.~J**; *,;Quarter I Provider: .*''*Year Received
                         . : e"oate
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                                                                               ''"&deg;">\ .
                                                                             '".      Unit . *   * *A!J~iY1te*;.N-~clide\:j;~ri. GEL*
Value***
K!19wn' i, !cr./Acceptance*
value**  :Xf:.* *Range/ Ratio**:~:.:.* '.:..         ,
Evaluation.***
EZA            4th/2015     02/18/16  E11415                         Water            PCi/L                 lodine-131            1.05E+02         9.26E+01              1.13                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                Cerium-141             1.27E+02         1.12E+02              1.14                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L               Chromium-51             2.60E+02         2.44E+02              1.07                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                Cesium-134             1.25E+02         1.39E+02              0.90                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                Cesium-137             1.12E+02         9.95E+01              1.13                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                  Cobalt-58            9.73E+01         9.56E+01              1.02                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L             Manaanese-54              1.41 E+02        1.26E+02              1.12                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                    lron-59            1.11 E+02        9.34E+01              1.19                     Acceptable EZA            4th/2015'    02/18/16  E11415                         Water            pCi/L                   Zinc-65             2.43E+02         2.15E+02              1.13                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                  Cobalt-60            1.92E+02         1.85E+02              1.04                     Acceptable C-22

Donald C. Cook Nuclear Plant                                                                              Annual Radiological Environmental Operating Report 2015 Table C-2 2015 Eckert & Ziegler Analytics Performance Evaluation Results
                  ,- -~- ,- '                                           ,,
                                                               'lo Re~o'rf          Sample'   Sample ,                       ,*                ;~    GEL           '                   Acceptari~e,,,    '           ''
Date:*,,,.    " Number     Media ;~;,. . Unit    . , .\4nal.yte 1 Nuclidef:     Value   '*:.; '*~nown val&#xb5;e';' '
* Range/ Rcitic;>>*   Evaluation!'.::*:
03/10/15        E11057      CartridQe       pCi               lodine-131        8.70E+01           9.89E+01              0.88            Acceptable 03/10/15        E11058        Milk        pCi/L              Strontium-89       9.09E+01           9.57E+01              0.95            Acceptable 03/10/15        E11058        Milk        pCi/L              Strontium-90       1.39E+01           1.56E+01              0.89            Acceptable 03/10/15        E11059        Milk        pCi/L               lodine-131        9.34E+01           9.51E+01              0.98            Acceptable 03/10/15        E11059        Milk         PCi/L              Cerium-141        2.33E+02           2.19E+02              1.06            Acceptable 03/10/15        E11059        Milk        PCi/L                   Cr-51         4.22E+02           4.06E+02              1.04            Acceptable 03/10/15        E11059        Milk        pCi/L               Cesium-134        1.50E+02           1.64E+02              0.91            Acceptable 03/10/15        E11059        Milk        PCi/L               Cesium-137        2.16E+02           1.98E+02              1.09            Acceptable 03/10/15        E11059        Milk        pCi/L                 Cobalt-58       1.32E+02           1.30E+02              1.02            Acceotable 03/10/15        E11059        Milk        pCi/L                   Mn-54         2.39E+02           2.25E+02              1.06            Acceptable 03/10/15        E11059        Milk        pCi/L                  lron-59        1.80E+02           1.75E+02              1.03            Acceptable 03/10/15        E11059        Milk        pCi/L                  Zinc-65        3.32E+02           2.97E+02              1.12            Acceotable 03/10/15        E11059        Milk         pCi/L                Cobalt-60       2.49E+02           2.35E+02              1.06            Acceptable 03/10/15        E11060       Water         pCi/L               lodine-131       1.11 E+02          9.53E+01              1.16            Acceptable 03/10/15        E11060       Water        pCi/L               Cerium-141        3.02E+02           2.84E+02              1.06            Acceptable 03/10/15        E11060       Water        pCi/L                   Cr-51         5.43E+02           5.26E+02              1.03            Acceptable 03/10/15        E11060       Water        PCi/L               Cesium-134        1.90E+02           2.13E+02              0.89            Acceptable 03/10/15        E11060       Water        PCi/L               Cesium-137        2.58E+02           2.57E+02              1.01            Acceptable 03/10/15        E11060       Water        pCi/L                 Cobalt-58       1.73E+02           1.68E+02              1.03            Acceotable 03/10/15        E11060       Water         oCi/L                  Mn-54         3.06E+02           2.92E+02              1.05            Acceptable 03/10/15        E11060       Water         oCi/L                 lron-59        2.51E+02           2.26E+02              1.11            Acceptable 03/10/15        E11060       Water         pCi/L                 Zinc-65        4.20E+02           3.84E+02              1.09            Acceptable 03/10/15        E11060       Water         pCi/L                Cobalt-60       3.24E+02           3.04E+02              1.06            Acceptable 05/21/15        E11174      Cartridcie      pCi               lodine-131        8.01E+01           7.74E+01              1.03            Acceptable 05/21/15        E11175        Milk        pCi/L              Strontium-89       9.75E+01           1.05E+02              0.93            Acceptable 05/21/15        E11175        Milk        pCi/L              Strontium-90       1.1 OE+01          1.44E+01              0.77            Acceptable 05/21/15        E11176        Milk        PCi/L                lodine-131       9.60E+01           9.75E+01              0.98            Acceptable 05/21/15        E11176       *Milk        pCi/L               Cerium-141        2.13E+02           2.11E+02              1.01            Acceptable C-23

Donald C. Cook Nuclear Plant                                                                                           Annual Radiological Environmental Operating Report 2015
                 ."':'/'<J
                ~t~~1~l~~
05/21/15       E11176                 Milk
                           .. :' ~~6~ft;it; . .':. s~:~~~~L:, lf..
:unit pCi/L
                                                                           .  .Ii;~~::::~,. .. . . :_ .?~
Chromium-51
:* 1,.J)!Analyte.J Nuchde,\i;, r~ :v~~~e)J'.~ ;?Kntiv:in value.~i: : .* Range/ Rati9'f'1::'
5.88E+02
::'~, ~*:
5.55E+02                       1.06
                                                                                                                                                                       . ": -~
                                                                                                                                        -. :.";\;j~ -" ; * '. Acc,epta11c~}! .
                                                                                                                                                                               .,,c*
                                                                                                                                                                                               ,'c, Acceptable
:E~a1u~fiorfi;~::;
* 05/21/15       E11176                 Milk           pCi/L                Cesium-134          1.71E+02              1.91E+02                        0.9                Acceptable 05/21/15       E11176                 Milk           pCi/L                Cesium-137          2.59E+02              2.53E+02                       1.02                Acceptable 05/21/15       E11176                 Milk           PCi/L                  Cobalt-58         2.64E+02              2.72E+02                       0.97                Acceptable 05/21/15       E11176                 Milk           pCi/L             Manganese-54           2.43E+02              2.40E+02                       1.01                Acceptable 05/21/15       E11176                 Milk           pCi/L                    lron-59         3.14E+02              2.95E+02                       1.06                Acceptable 05/21/15       E11176                 Milk           pCi/L                    Zinc-65         4.67E+02              4.53E+02                       1.03                Acceptable 05/21/15       E11176                 Milk           PCi/L                  Cobalt-60         4.81E+02              4.98E+02                       0.97                Acceptable 05/21/15       E11177                Water           pCi/L                 lodine-131         9.92E+01              9.67E+01                       1.03                Acceptable 05/21/15       E11177                Water           pCi/L                Cerium-141          1.40E+02              1.39E+02                       1.01                Acceptable 05/21/15       E11177                Water           pCi/L               Chromium-51          3.95E+02              3.66E+02                       1.08                Acceptable 05/21/15       E11177                Water           pCi/L                Cesium-134          1.12E+02              1.26E+02                       0.89                Acceptable 05/21/15       E11177                Water           pCi/L                Cesium-137          1.69E+02              1.67E+02                       1.01                Acceptable 05/21/15       E11177                Water            pCi/L                 Cobalt-58         1.78E+02              1.80E+02                       0.99                Acceptable 05/21/15       E11177                Water            pCi/L             Manganese-54          1.66E+02              1.59E+02                       1.05                Acceptable 05/21/15       E11177                Water            pCi/L                   lron-59         2.14E+02              1.95E+02                       1.10                Acceptable 05/21/15       E11177                Water            pCi/L                   Zinc-65
* 3.25E+02              2.99E+02                       1.09                Acceptable 05/21/15       E11177                Water            pCi/L                  Cobalt-60        3.23E+02              3.28E+02                       0.98                Acceptable 08/06/15       E11216              Cartridoe            pCi                lodine-131         8.92E+01              8.01 E+01                      1.11                Acceptable 08/06/15       E11217                 Milk            pCi/L              Strontium-89         9.13E+01              8.26E+01                       1.11                Acceptable 08/06/15       E11217                 Milk            pCi/L              Strontium-90         1.16E+01              1.27E+01                       0.91                Acceptable 08/06/15       E11218                 Milk            pCi/L                lodine-131         1.05E+02              9.59E+01                       1.10                Acceptable 08/06/15       E11218                 Milk            pCi/L               Ceriumc141         -2.70E+OO              Not Pres.                        -                 Acceptable 08/06/15       E11218                 Milk            pCi/L              Chromium-51          2.70E+02              2.76E+02                       0.98                Acceptable 08/06/15       E11218                 Milk            pCi/L               Cesium-134          1.46E+02              1.63E+02                       0.90                Acceptable 08/06/15       E11218                 Milk            pCi/L               Cesium-137          1.31 E+02             1.25E+02                       1.05                Acceptable 08/06/15       E11218                 Milk            pCi/L                  Cobalt-58        7.18E+01              6.84E+01                       1.05                Acceptable 08/06/15       E11218                 Milk            pCi/L             Manganese-54          1.02E+02              1.01 E+02                      1.01                Acceptable 08/06/15       E11218                 Milk            pCi/L                   lron-59         1.51E+02              1.51 E+02                      1.00                Acceptable 08/06/15       E11218                 Milk            pCi/L                   Zinc-65         2.63E+02              2.48E+02                       1.06                Acceptable 08/06/15       E11218                 Milk            pCi/L                  Cobalt-60         1.96E+02             1.93E+02                       1.02                Acceptable 08/06/15       E11219                Water            pCi/L                 lodine-131        9.53E+01              9.34E+01                       1.02                Acceptable 08/06/15       E11219                Water            pCi/L               Cerium-141           1.24E-01             Not Pres.                        -                 Acceptable C-24

Donald C. Cook Nuclear Plant                                                                                                                              Annual Radiological Environmental Operating Report 2015 I-'~: : ..:::~ii!&sect;i,~:::1<* ,~~~!~~~I~;*\ .
                                        . um er,* .,., i'.'C**
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                                                                           *:{*:*unit*"*:*
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                                                                                                                                                            . :51 Known -valu ",;;,.~RailQe/RatioiL.:.~/ ''*-".; Evaluation's.''.,,'<
08/06/15        E11219                       Water           pCi/L                     Chromium-51                      3.47E+02              2.93E+02             1.18                     Acceptable 08/06/15        E11219                       Water           PCi/L                      Cesium-134                      1.63E+02              1.73E+02             0.94                     Acceptable 08/06/15        E11219                       Water
* pCi/L                        Cesium-137                      1.34E+02              1.33E+02             1.01                     Acceptable 08/06/15        E11219                       Water           pCi/L                        Cobalt-58                     7.21E+01              7.26E+01             0.99                     Acceotable 08/06/15        E11219                       Water           pCi/L                    Manganese-54                      1.17E+02              1.07E+02             1.10                     Acceptable 08/06/15        E11219                       Water           pCi/L                         lron-59                      1.76E+02              1.61E+02             1.09                     Acceptable 08/06/15        E11219                       Water           oCi/L                         Zinc-65                      2.85E+02              2.64E+02              1.08                    Acceptable 08/06/15        E11219                       Water           PCi/L                        Cobalt-60                     2.10E+02              2.05E+02              1.03                    Acceptable 11/15/15        E11310                   Cartridae             oCi                       lodine-131                     8.21E+01              8.15E+01              1.01                    Acceptable 11/15/15        E11311                        Milk           oCi/L                     Strontium-89                     8.79E+01              9.91E+01              0.89                    Acceptable 11/15/15        E11311                        Milk           oCi/L                     Strontium-90
* 1.07E+01              1.64E+01              0.65                    Acceptable 11/15/15        E11312                        Milk           pCi/L                       lodine-131                     9.61E+01              9.99E+01              0.96                    Acceptable 11/15/15        E11312                        Milk           pCi/L                      Cerium-141                      2.15E+02              2.13E+02              1.01                    Acceptable 11/15/15        E11312                        Milk           pCi/L                     Chromium-51                      5.82E+02              5.38E+02              1.08                    Acceptable 11/15/15        E11312                        Milk           pCi/L                      Cesium-134                      1.89E+02              2.12E+02              0.89                    Acceptable 11/15/15        E11312                        Milk           oCi/L                      Cesium-137                      2.43E+02              2.55E+02              0.95                    Acceptable 11/15/15        E11312                        Milk           pCi/L                        Cobalt-58                     2.50E+02              2.63E+02              0.95                    Acceptable 11/15/15        E11312                        Milk           pCi/L                    Manaanese-54                      3.02E+02              2.90E+02              1.04                    Acceptable 11/15/15        E11312                        Milk           pCi/L                         lron-59                      2.30E+02              2.26E+02              1.02                    Acceptable 11/15/15        E11312                        Milk           pCi/L                         Zinc-65                      3.62E+02              3.53E+02              1.02                    Acceptable 11/15/15        E11312                        Milk           pCi/L                        Cobalt-60                     3.42E+02              3.30E+02              1.04                    Acceptable 11/15/15        E11313                       Water           pCi/L                       lodine-131                     1.00E+02              9.67E+01              1.03                    Acceptable 11/15/15        E11313                       Water           pCi/L                      Cerium-141                      2.05E+02               1.99E+02             1.03                    Acceptable 11/15/15        E11313                       Water           pCi/L                     Chromium-51                      5.42E+02              5.02E+02              1.08                    Acceptable 11/15/15         E11313                      Water           pCi/L                      Cesium-134                       1.75E+02              1.98E+02             0.89                    Acceptable 11/15/15         E11313                      Water            oCi/L                     Cesium-137                      2.40E+02              2.38E+02              1.01                    Acceptable 11/15/15         E11313                      Water            oCi/L                       Cobalt-58                     2.45E+02              2.46E+02              1.00                    Acceptable 11/15/15         E113fa                      Water            pCi/L                   Manaanese-54                      2.88E+02              2.71E+02              1.06                    Acceptable 11/15/15        E11313                      Water           PCi/L                         lron-59                      2.31E+02              2.11E+02              1.10                    Acceptable 11/15/15        E11313                      Water            pCi/L                        Zinc-65                       3.75E+02              3.30E+02             1.14                    Acceptable 11/15/15        E1131'3                     Water            pCi/L                       Cobalt-60                      3.11E+02              3.08E+02             1.01                    Acceptable 02/18/16         E11412                   Cartridge            pCi                       lodine-131                      7.73E+01              7.98E+01             0.97                    Acceotable 02/18/16         E11413                       Milk            oCi/L                     Strontium-89                     9.41 E+01             8.61E+01             1.08                    Acceptable C-25

Donald C. Cook Nuclear Plant                                                                                                     Annual Radiological Environmental Operating Report 2015
                                                                                                                                ,,,        ''<o.           " ::--~~
f:*:R~~~~~**
                                                                                                                                                                                 ~~
                            ,:*'', Sampl~ .,                                                                                                                                  '
value,'~ '. KhoJ~:va1u;:~ f~.:
                                               .,:*Sample :                                   ''
                                                                                                                         'GEL    "                    , Aci:ep~ance: /!'., **
                                             * :*;,,*tiviedia/'< , ,, ;d~i~* . ,,''.;!A:nalyte:l;Nuclide''".:
                                                                                              ,"-?-,.
                                                                                                                                                                                ~valuautiW:,:;.,
                         ' tii,'; NuintJ~r,'                                                                   ; \,,. ~'                                RangefRatidi';:7,,1,,
02/18/16       E11413                    Milk           pCi/L             Strontium-90                 9.74E+OO          1.25E+01              0.78               Acceptable 02/18/16       E11414                    Milk           pCi/L              lodine-131                  1.01 E+02         9.12E+01              1.11               Acceptable 02/18/16       E11414                    Milk           pCi/L             Cerium-141                   1.36E+02          1.29E+02              1.06               Acceptable 02/18/16       E11414                    Milk           pCi/L            Chromium-51                   2.79E+02          2.81E+02              0.99               Acceptable 02/18/16       E11414                    Milk           pCi/L             cesium-134                   1.45E+02          1.60E+02              0.91               Acceptable 02/18/16       E11414                    Milk           pCi/L             Cesium-137                   1.15E+02          1.15E+02              1.00               Acceptable 02/18/16       E11414                    Milk           pCi/L               Cobalt-58                  1.06E+02          1.10E+02              0.96               Acceptable 02/18/16      E11414                    Milk           pCi/L            Manganese-54                  1.53E+02          1.45E+02              1.06             , Acceptable 02/18/16      E11414                    Milk           pCi/L                lron-59                   1.19E+02          1.08E+02               1.10              Acceptable 02/18/16       E11414                    Milk           PCi/L                Zinc-65                   2.69E+02          2.48E+02              1.08               Acceptable 02/18/16      E11414                    Milk           pCi/L               Cobalt-60                  2.12E+02          2.13E+02              0.99               Acceptable 02/18/16      E11415                  Water            pCi/L              lodine-131                  1.05E+02          9.26E+01              1.13               Acceptable 02/18/16      E11415                  Water            pCi/L             Cerium-141                   1.27E+02          1.12E+02              1.14               Acceptable 02/18/16      E11415                  Water            pCi/L            Chromium-51                   2.60E+02          2.44E+02               1:07              Acceptable 02/18/16      E11415                  Water            pCi/L             Cesium-134                   1.25E+02          1.39E+02              0.90               Acceptable 02/18/16      E11415                  Water            pCi/L             Cesium-137                   1.12E+02          9.95E+01               1.13              Acceptable 02/18/16      E11415                  Water            pCi/L               Cobalt-58                  9.73E+01          9.56E+01               1.02              Acceptable 02/18/16      E11415                   Water           pCi/L            Manganese-54                   1.41E+02         1.26E+02               1.12              Acceptable 02/18/16      E11415                  Water            pCi/L                lron-59                   1.11E+02          9.34E+01               1.19              Acceptable 02/18/16      E11415                  Water            pCi/L                Zinc-65                   2.43E+02          2.15E+02               1.13              Acceptable 02/18/16       E11415                  Water           pCi/L               Cobalt-60                   1.92E+02         1.85E+02               1.04              Acceptable C-26

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Table C-3 REMP Intra-Laboratory Data Summary: Bias and Precision by Matrix Bias Criteria            Precision Criteria C+ I - 250/ol                {Note 1}
WITHIN          OUTSIDE    WITHIN          OUTSIDE REMP 2015                    CRITERIA        CRITERIA   CRITERIA         CRITERIA MILK Gas Flow Sr 2nd count                            41               0         44                0 Gas Flow Total Strontium                         25               0         25                0 Gamma Soec Liquid RAD A- 013 with Ba La          59               0        117                0 SOLID Gamma Soec Sol id RAD A-013                      22               0         28                0 LSC Nickel 63                                     3               0          3                0 Gas Flow Sr 2nd count                             6               0          6                0 Gas Flow Total Strontium                          4               0          4                0 Gamma Spec Sol id RAD A- 0 13 with Ba, La         5               0          9                0 Gamma Spec Solid RAD A- 013 with Iod ine          6               0          6                0 FILTER Gas Flow Sr 2nd Count                             5               0          5                0 Gross A & B                                     402               0       402                 0 Gamma Spec Filter                               42                0         51                0 LIOUID Aloha Soec Uranium                               10               0         14                0 Tritium                                          212               0        213                0 LSC Iron - 55                                    12               0         11                0 LSC Nickel 63                                    14               0         13                0 Gamma Spec Liquid RAD A-013                       5               0          5                0 Alpha Spec Am243                                 4                0          4                0 Gamma Iodine-131                                 27               0         27                0 Alpha Spec Plutonium                             18               0         18                0 Gas Flow Sr 2nd count                            10               0         10                0 Alpha Spec Am241 Curium                          19               0         19                0 Gas Flow Total Strontium                         29               0         26                0 Gross Aloha Non Vol Beta                        35                0         39               0 Gamma Soec Liquid RAD A-013 with Ba La          65                0        158               0 Gamma Soec Liquid RAD A-013 with Iod ine         31                0        32                0 TISSUE Gamma Spec Solid RAD A-013                       35                0        36                0 Gas Flow Sr 2nd count                             12               0         12               0 Gas Flow Total Strontium                          11               0         11               0 Gamma Spec Solid RAD A- 013 with Iodine           12               0         12               0 SEA WATER LSC Iron-55                                      7                0         6                0 C-27

Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Bias Criteria                 Precision Criteria C+ I - 250/ol                      (Note 1)
WITHIN           OUTSIDE         WITHIN            OUTSIDE REMP 2015                         CRITERIA         CRITERIA        CRITERIA          CRITERIA LSC Nickel 63                                               7               0               6                 0 Gas Flow Total Strontium                                   4                0               4                 0 Gross Aloha Non Vol Beta                                    3               0               3                 0 Gamma Spec Liquid RAD A-013 with Iod ine                   8                0               8                 0 VEGETATION Gas Flow Sr 2nd count                                      10               0               10                0 Gamma Spec Solid RAD A-013 with Iodine                    79                0              86                 0 AIR CHARCOAL Gamma Iodine 131 RAD A-013                                529               0              577                0 Carbon - 14 (Ascarite/Soda Lime Filter per Liter)                                                    35                0              35                 0 DRINKING WATER Tritium                                                    51               0               50                0 LSC Iron- 55                                               14               0               16                0 LSC Nickel 63                                              14               0               16                0 Gamma Iodine-131                                          31                0              32                 0 Gas Flow Sr 2nd count                                      15               0               15                0 Gas Flow Total Strontium                                   17               0               18                0 Gross Alpha Non Vol Beta                                  76                0              73                 0 Gamma Spec Liquid RAD A-013 w ith Ba La                   32                0              85                 0 Total                                       2113                             2400 Note 1: The RPO must be 20 percent or less, if both samples are greater than 5 times the MDC . If both results are less than 5 times MDC , then the RPO must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC , then the RPO can be calculated using the MDC for the result of the one below the MDC . The RPO must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC , the RPO must be less than or equal to 20%. If both resu lts are below MDC , then the limits on % RPO are not aoolicable.
C-28

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Table C-4 All Radiological Intra-Laboratory Data Summary:
Bias and Precision by Matrix Bias Criteria ( + I - 25% Precision Criteria (Note 1)
WITHIN          OUTSIDE    WITHIN         OUTSIDE Total Radiological 2015                 CRITERIA        CRITERIA   CRITERIA        CRITERIA MILK Gamma Soec Liquid RAD A-013                                  6               0          6              0 Gamma Iodine-129                                             1               0          2              0 Gamma Iodine- 131                                           25               0         119             0 Gas Flow Sr 2nd count                                       41               0         45              0 Gas Flow Strontium 90                                        6               0          6              0 Gas Flow Total Strontium                                    25               0         25              0 Gamma Soec Liquid RAD A- 013 with Ba La                     59               0         117             0 Gamma Soec Liqu id RAD A-013 with Iod ine                    6               0          6              0 SOLID Gamma Percent Leach                                          2               0          0              0 Gas Flow Radium 228                                         50               0         52              0 Tritium                                                    268               0        301              0 Carbon - 14                                                172               0        229              0 LSC Iron - 55                                              143               0         155             0 Aloha Spec Polonium Solid                                   18               0         21              0 Gamma Nickel 59 RAD A-022                                  125               0         138             0 LSC Chlorine-36 in Solids                                    3               0          3              0 Gamma Soec Ra226 RAD A-013                                  40               0         48              0 Gamma Soec Solid RAD A-013                                 815               0        1016             0 LSC Nickel 63                                              184               0         189             0 LSC Plutonium                                              241               0        250              0 Technetium -99                                             328               0        360              0 ICP-MS Technet ium -99 in Soil                              22               0         17              0 LSC Selenium 79                                              9               0         11              0 Total Activity,                                              6               0          6              0 Tritium                                                      3               0          3              0 Aloha Soec Am243                                            40               0         55              0 Gamma Iodine- 129                                          145               0        158              0 Gas Flow Lead 210                                            4               0          3              0 Total Uranium KPA                                            5               0          6              0 Aloha Spec Uran ium                                        326               0        448              0 LSC Prometh ium 147                                          6               0          7              0 LSC Rapid Strontium 89 and 90                               74               0         84              0 Aloha Soec Thorium                                         232               0        308              0 Gas Flow Rad ium 228                                         4               0         21              0 ICP-MS Uranium - 233 234 in Sol id                          46               0         45              0 Aloha Soec Plutonium                                       337               0        357              0 ICP-MS Technetium-99 Prep in Soil                           27               0         17              0 Alpha Spec Neptunium                                       277               0        288              0 Alpha Spec Plutonium                                       163               0        190              0 Alpha Spec Rad iu m 226                                     12               0         12              0 Gamma Spec Solid with Ra 226, Ra228                          3               0          3              0 C-29

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + / - 250/o Precision Criteria (Note 1)
WITHIN          OUTSIDE      WITHIN         OUTSIDE Total Radiological 2015                 CRITERIA        CRITERIA     CRITERIA        CRITERIA Gas Flow Sr 2nd count                                       33               0           39              0 Gas Flow Strontium 90                                      270               0          284              0 Gas Flow Total Radium                                        0               0            1              0 Lucas Cell Radium 226                                       90               0           119             0 Total Activity Screen                                       21               0           25              0 Aloha Soec Am241 Curium                                    355               0          390              0 Aloha Soec Total Uranium                                     2               0            5              0 Gas Flow Total Strontiu m                                   56               0           59              0 ICP-MS Uranium-233, 234 Prep in Solid                       43               0           43              0 ICP- MS Uranium-235, 236, 238 in Solid                      56               0           48              0 Gamma Soec Solid RAD A-013 with Ba La                        5               0            9              0 Gamma Spec Solid RAD A-013 with Iodine                       6               0            6              0 Oroanicallv Bound Tritium                                    4               0            4              0 GFC Chlorine-36 in Solids                                    2               0            2              0 Gamma Spec Solid RAD A-013 (pCi/Sample)                      0               0            1              0 Tritium                                                     13               0           13              0 Aloha Soec Am241 (oCi/Samole)                                2               0            1              0 ICP- MS Uranium - 234 235 236 238 in Solid                  55               0           44              0 ICP- MS Uranium-235, 236, 238 Prep in Solid                 43               0           43              0 ICP-MS U-234, 235, 236 238 Prep per sample                   2               0            1              0 Alpha Spec Uranium                                           2               0            1              0 Gross Alpha/Beta                                           297               0          390              0 Alpha Spec Plutonium                                         1               0            1              0 Gas Flow Strontium 90                                        2               0            1              0 Gross Aloha/Beta (Ame ricium Calibration) Solid              3               0            5              0 ICP- MS Uranium-234 235 236 238 Prep in Solid               27               0           23              0 Lucas Cell Rad ium 226 by DOE HASL 300 Ra-04 Solid           3               0            3              0 FILTER Aloha Spec Uranium                                          11               0           19              0 Aloha Soec Polonium                                          0               0            8              0 Gamma 1- 131 filter                                          5               0            5              0 LSC Pluton ium Filter                                      127               0          157              0 Tritium                                                    109               0          185              0 Carbon - 14                                                 59               0          104              0 Nickel - 63                                                 0                0           17              0 LSC Iron - 55                                              118               0          126              0 Gamma Nickel 59 RAD A- 022                                 94                0          102              0 Gamma Soec Sol id RAD A-013                                  2               0            2              0 LSC Nickel 63                                              111               0          118              0 Technetium-99                                              83                0          117              0 Gamma Spec Filter RAD A- 013                               229               0          260              0 LSC Selenium 79                                             0                0            2              0 Alphaspec Np Filter per Liter                               12               0           20              0 Aloha soec Pu Filter per Liter                             29                0           37              0 Gamma Iodine-125                                            5                0            0              0 C-30

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 250/o Precision Criteria (Note 1 l WITHIN          OUTSIDE      WITHIN         OUTSIDE Total Radiological 2015               CRITERIA        CRITERIA     CRITERIA        CRITERIA Gamma Iodine-129                                          61               0           96              0 Alpha Spec Am243                                          18               0            23             0 Gas Flow Lead 210                                          0               0            s              0 LSC Plutonium Filter oer Liter                             9               0            14             0 Total Uranium KPA                                          9               0            16             0 Aloha Soec Uranium                                        SS               0           141             0 LSC Promethium 147                                         s               0            s              0 LSC Rapid Strontium 89 and 90                            112               0           137             0 Alpha Spec Thorium                                        37               0           48              0 Alpha Spec Plutonium                                      90               0           127             0 Aloha Soec Neotunium                                     102               0           113             0 Aloha Soec Plutonium                                     106               0           129             0 Alpha Spec Polonium,(Filter/Liter)                         0               0            9              0 Alpha Spec Radium 226                                      0               0            3              0 Alpha/Beta (Americium Calibration)                         4               0            8              0 Gas Flow Sr 2nd Count                                     63               0           78              0 Gas Flow Strontium 90                                     72               0           87              0 Lucas Cell Radium-226                                      3               0            3              0 Aloha Soec Am241Curium                                   134               0           166             0 Gas Flow Total Strontium                                   s               0            7              0 ICP-MS Uranium-23S 236 238 in Filter                       0               0            3              0 Total Activity in Filter                                   s               0            s              0 Alphaspec Am241 Curium Filter per Liter                   20               0           24              0 Tritium                                                   87               0           89              0 Gamma Spec Filter RAD A- 013 Direct Count                  8               0            8              0 Carbon-14                                                 11               0           11              0 GFC Chlorine-36 in Filters PL                              4               0            4              0 Direct Count-Gross Alpha/Beta                             69               0            0              0 Gross Alpha/Beta                                          66               0           7S              0 ICP-MS Uranium-234, 23S 236, 238 in Filter                 0               0           10              0 ICP-MS Uranium-23S 236 238 Prep in Filter                  0               0            3              0 Alpha Spec U                                              19               0           42              0 Gross A & B                                              461               0          4S6              0 LSC Iron-SS                                                3               0           13              0 Technetium-99                                             11               0           18              0 Gas Flow Sr-90                                            10               0           16              0 LSC Nickel 63                                             13               0           20              0 Gas Flow Pb - 210                                          6               0           20              0 Gas Flow Ra - 228                                          4               0           13              0 Gamma Iodine 129                                           7               0            7              0 ICP-MS Uranium-234 23S 236, 238 Prep in Filter             0               0            s              0 Gamma Spec Filter                                        102               0          132              0 Lucas Cell Ra -2 26                                       11               0           21              0 Total Uranium KPA                                          2               0            4              0 C-31

Donald C. Cook Nuclear Plant   Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 25% Precision Criteria (Note 1 l WITHIN          OUTSIDE    WITHIN         OUTSIDE Total Radiological 2015         CRITERIA        CRITERIA   CRITERIA        CRITERIA Alpha Spec Tho rium                                   15              0         22              0 LIQUID Aloha Soec Uran ium                                 521               0        688              0 Aloha Soec Polon ium                                   1              0          2              0 Electrolytic Tritium                                 21               0         36              0 Tritium                                             1292              0        1344             0 Ca rbon - 14                                         163              0         191             0 Plutonium                                            65               0         79              0 Chlorine-36 in Liquids                                3               0          3              0 Iodine- 131                                           2               0          3              0 LSC Iron-55                                         225               0        285              0 Gamma Nickel 59 RAD A-022                            26               0         30              0 Gamma Iod ine 131 RAD A-013                           1               0          2              0 Gamma Spec Solid RAD A-013                            2               0          2              0 LSC Nickel 63                                       247               0        285              0 LSC Radon 222                                        15               0         16              0 Technetium -99                                      619               0        525              0 Gamma Soec Liqu id RAD A- 013                       913               0        936              0 Aloha Spec Total U RAD A-011                         66               0         65              0 LSC Selenium 79                                       9               0          9              0 Total Activity                                        3               0          3              0 Alpha Spec Am243                                     25               0         28              0 Gamma Iod ine-129                                   118               0        135              0 Gamma Iodine- 131                                    27               0         27              0 ICP-MS Technetium-99 in Water                        25               0         26              0 Gas Flow Lead 210                                    22               0         18              0 Total Uranium KPA                                   125               0        274              0 LSC Promethium 147                                    9               0          9              0 LSC Raoid Strontium 89 and 90                        16               0         18              0 Alpha Spec Polonium                                   2               0          2              0 Alpha Spec Thorium                                  225               0        254              0 Gas Flow Radium 228                                 274               0        317              0 Gas Flow Radium 228                                  42               0         43              0 Aloha Soec Pluton ium                               393               0        512              0 LSC Sulfur 35                                         5               0          5              0 Alpha Spec Neptun ium                               185               0        216              0 Alpha Spec Plutonium                                 41               0         60              0 Alpha Spec Radium 226                                30               0         27              0 Gas Flow Sr 2nd count                               218               0        233              0 Gas Flow Strontium 90                               516               0        585              0 Gas Flow Total Radium                                80               0        109              0 ICP-MS Technetium-99 Prep in Water                   26               0         27              0 ICP-MS Uranium-233 234 in Liquid                      5               0         13              0 LSC Calcium 45                                        5               0          5              0 Luca s Cell Radium 226                              380               0        404              0 Lu cas Cell Rad ium -226                             14               0         14              0 Total Activity Screen                                 6               0         11              0 C-32

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 25% Precision Criteria (Note 1 l WITHIN          OUTSIDE    WITHIN         OUTSIDE Total Radiological 2015                  CRITERIA        CRITERIA   CRITERIA        CRITERIA Chlorine - 36 in Liquids                                       11              0          14             0 Alpha Spec Am241 Curium                                      337               0        452              0 Gas Flow Total Strontium                                      138              0         141             0 Gross Aloha Non Vol Beta                                     1154              0        1379             0 LSC Phosphorus-32                                              3               0          3              0 ICP-MS Uran ium-233 234 Preo in Liauid                         6               0          14             0 Tritium in Drinkinq Wate r by EPA 906 .0                      13               0          17             0 Gamma Spec Liquid RAD A-013 with Ba, La                       65               0         158             0 Gamma Spec Liquid RAD A-013 with Iodine                      144               0         138             0 Gas Flow Strontium 89 & 90                                     4               0          1              0 ICP- MS Uran ium-235 236 238 in Liau id                       10               0         13              0 Gas Flow Total Aloha Radium                                    6               0          4              0 Gross Aloha Co-precipitation                                   4               0         24              0 ICP- MS Uranium - 23 5 23 6 238 Pre p in Liquid                6               0         14              0 ICP-MS Uranium-234 235 236, 238 in Liqu id                    90               0         79              0 Gross Alpha Beta (Americium Calibration) Liquid               31               0         51              0 ICP-MS Uranium - 234, 235, 236, 238 Preo in Liauid            57               0         55              0 Aloha/Beta (Americium Ca li bration) Drin kina Water          24               0         20              0 TISSUE Carbon-14                                                      4               0          4              0 Gamma Spec Solid RAD A-013                                    77               0         87              0 Tritium                                                        1               0          1              0 Gas Flow Lead 210                                              1               0          1              0 Alpha Spec Uranium                                             5               0         11              0 Aloha Spec Thorium                                             1               0          1              0 Aloha Soec Plutonium                                           3               0          4              0 Gas Flow Sr 2nd count                                         12               0         12              0 Gas Flow Strontium 90                                         21               0         19              0 Gas Flow Total Strontium                                      11               0         11              0 Gamma Spec Sol id RAD A- 013 wi th Iod ine                    12               0         12              0 Gross Alpha/Beta                                               4               0          7              0 SEA WATER LSC Iron-55                                                    7               0          6              0 LSC Nickel 63                                                  7               0          6              0 Gas Flow Total Strontium                                       4               0          4              0 Gross Alpha Non Vol Beta                                       3               0          3              0 Gamma Spec Liquid RAD A-013 with Iodine                        8               0          8              0 VEGETATION Carbon - 14                                                    5               0          6              0 Gamm a Nickel 59 RAD A- 022                                    1               0          1              0 Gamma Soec Solid RAD A- 013                                   30               0         31              0 LSC Nickel 63                                                  1               0          1              0 C-33

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 250/o Precision Criteria (Note 1 l WITHIN          OUTSIDE      WITHIN         OUTSIDE Total Radiological 2015                   CRITERIA        CRITERIA     CRITERIA        CRITERIA LSC Plutonium                                                1               0            1              0 Technetium-99                                                3               0            3              0 Tritium                                                     12               0           12              0 Gamma Iodine-129                                             1               0            0              0 Gas Flow Lead 210                                            4               0            6              0 Total Uranium KPA                                            4               0            4              0 Alpha Spec Uranium                                          25               0           28              0 Alpha Spec Thorium                                           4               0            7              0 Alpha Spec Plutonium                                        14               0           13              0 Alpha Spec Neptunium                                         1               0            1              0 Alpha Spec Plutonium                                         1               0            1              0 Gas Flow Sr 2nd count                                       10               0           10              0 Gas Flow Strontium 90                                       21               0           19              0 Gas Flow Total Radium                                        3               0            5              0 Alpha Spec Am241 Curium                                      7               0            5              0 Gamma Spec Solid RAD A-013 with Iodine                      79               0           86              0 Gamma Spec Solid RAD A- 013 (pCi/Sample)                     1               0            1              0 Alpha Spec Am241 (PCi/Sample)                                2               0            2              0 ICP-MS Uranium-234 235 236 238 in Solid                     10               0            4              0 Alpha Spec Uranium                                           1               0            2              0 Gross Alpha/Beta                                             8               0            9              0 Alpha Spec Plutonium                                         1               0            2              0 Gas Flow Strontium 90                                        4               0            2              0 ICP-MS Uranium-234, 235 236 238 Prep in Solid                4               0            2              0 AIR CHARCOAL Gamma Iodine 131 RAD A-013                                 529               0          577              0 Gamma Iodine-129                                            14               0            8              0 Alpha Spec Uranium                                           0               0            3              0 Alpha Spec Plutonium                                         0               0            3              0 Aloha Soec Am241Curium                                       0               0            3              0 Carbon-14                                                   16               0           16              0 Carbon-14 (Ascarite/Soda Lime Filter per Liter)             35               0           35              0 Gamma Iodine 129                                            17               0           17              0 Gamma Spec Filter                                           17               0           17              0 DRINKING WATER Alpha Spec Uranium                                           2               0            2              0 Alpha Spec Polonium                                          1               0            1              0 Tritium                                                     54               0           53              0 Carbon-14                                                    1               0            1              0 Iodine-131                                                  11               0           11              0 LSC Iron-55                                                 14               0           16              0 LSC Nickel 63                                               14               0           16              0 LSC Radon 222                                               13               0           13              0 Gamma Spec Liquid RAD A- 013                                31               0           88              0 C-34

Donald C. Cook Nuclear Plant                  Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 250/o   Precision Criteria (Note 1 l WITHIN          OUTSIDE         WITHIN           OUTSIDE Total Radiological 2015                           CRITERIA         CRITERIA       CRITERIA         CRITERIA Gamma Iodine-129                                                         8              0              13                0 Gamma Iodine- 131                                                       31              0              32                0 Total Uranium KPA                                                        9              0              26                0 Aloha Spec Thorium                                                       1              0               1                0 Gas Flow Radium 228                                                      1              0               0                0 Gas Flow Radium 228                                                     29              0              30                0 Aloha Soec Plutonium                                                     1              0               1                0 Gas Flow Sr 2nd count                                                   15              0              15                0 Gas Flow Strontium 90                                                   15              0              18                0 Lucas Cell Radium - 226                                                 58              0              70                0 Alpha Spec Am241 Curium                                                  1              0               1                0 Gas Flow Total Strontium                                                17              0              18                0 Gross Alpha Non Vol Beta                                               313              0             247                0 Tritium in Drinkinq Water by EPA 906.0                                  50              0              72                0 Gamma Spec Liquid RAD A-013 with Ba La                                  32              0              85                0 Gas Flow Strontium 89 & 90                                              23              0              16                0 Gross Aloha Co-precip itation                                          133              0              96                0 Aloha/Beta (Americium Calibration) Drinkinq Water                       17              0              17                0 ECLS-R-GA NJ 48 Hr Rapid Gross Aloha                                     3              0               3                0 Total                 19581                          22758 Note 1: The RPO must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPO must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC ,
then the RPO can be calculated using the MDC for the result of the one below the MDC . The RPO must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPO must be less than or equal to 20%. If both results are below MDC , then the limits on % RPO are not applicable.
C-35

Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Table C-5 2015 Corrective Action Report Summary CORRECTIVE ACTION ID#
                 &                                             DISPOSITION PE FAILURE CARR150223-929                       Root Cause Analysis ISO Documentation of PT Failures in  Cesium-137 (Cs-137)
RAD 100 for Cesium-137 and           EPA 901.1, HASL 300 Ga-01, DOE 4.5.2.3 Radium-228.                          After a review of the data, an apparent reason for this discrepancy could not be determined. The following steps were taken to prove that this low bias was an isolated occurrence and that our overall process is within control.
: 1. The batch quality control samples were reviewed and found to be compliant. The LCS recovered at 105%.
: 2. Laboratory control data were also reviewed for trends. None were noted.
: 3. The instrument calibrations were reviewed for biases that could have attributed to this failure. Biases were not noted.
: 4. A sample duplicate was also prepared and counted along with the reported result. The result fell within the method's acceptance range for duplicates.
Permanent Corrective/Preventive Actions or Improvements :
The laboratory must assume unidentified random error caused the elevated bias because all quality control criteria were met for the batch. Additionally, a well characterized performance evaluation sample from another vendor W?S prepped and analyzed a few weeks after this sample. The lab will continue to monitor the recoveries of these parameters to ensure that there are no issues.
A second PT was successfully analyzed for this matrix.
Radium-228 (Ra-228}
RAD Naturals LAB PBMS A-009 After a review of the data, an apparent reason for this discrepancy could not be determined. The following steps were taken to prove that this low bias was an isolated occurrence and that our overall process is within control.
C-36

Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
                  &                                             DISPOSITION PE FAILURE
: 1. The batch quality control samples were reviewed and found to be compliant. The LCS recovered at 118%.
: 2. Laboratory control data were aiso reviewed for trends.
None were noted.
: 3. The instrument calibrations were reviewed for biases that could have attributed to this failure. Biases were not noted.
: 4. A sample duplicate was also prepared and counted along with the reported result. The result fell within the method's acceptance limit for duplicates with than RER of 0.62.
: 5. Sample was also reanalyzed after the report was received and a result (4.94 pCi/L) that fell well within the acceptance range of the study was obtained.
Changes were not made in the prep process for the reanalysis.
Permanent Corrective/Preventive Actions or Improvements :
The laboratory must assume unidentified random error caused the elevated bias because all quality control criteria were met for the batch. The lab will continue to monitor the recoveries of these parameters to ensure that there are no issues.
A second PT was successfully analyzed for this matrix.
CARR150519-954                      Root Cause Analysis ISO Documentation of PT Failures in The cause of this failure was determined to be human error.
-MRAD-22 for Total Uranium in       The Uranium-Total (mass) result was inadvertently entered as Vegetation by Alpha Spec            the resultfor Uranium-Total (pCi/Kg). These results are hand entered into the PT provider's databas~.
Permanent Corrective/Preventive Actions' or Improvements :
The laboratory has implemented automatic upload capabilities for performance sample results using CSV files. An EDD-like file is created directly from Alpha Urns and uploaded onto the PT provider's website. This will eliminate manual data entry C-37

Donald C. Cook Nuclear Plant       . Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
                 &                                             DISPOSITION PE FAILURE errors.
A second PT was successfully analyzed for this matrix.
CARR150610-962                       Root Cause Analysis of lodine-131 (1-131)
ISO Documentation of PT Failures in  After a review of the data, an apparent reason for this RAD-101 for lodine-131 in drinking   discrepancy could not be determined. The following steps water.                               were taken to prove that this high bias was an isolated occurrence and that our overall process is within control.
The batch quality control samples were reviewed and found to be compliant. The LCS recovered at 103%.
Laboratory control data were also reviewed for trends. None were noted.
The instrument calibrations were reviewed for positive biases that could have attributed to this failure. None were noted.
Sample duplicates were also prepared and counted along with the reported result. All results fell within the method's acceptance range for duplicates.
Perman~nt Corrective/Preventive Actions or Improvements The laboratory must assume an unidentified random error caused the high bias 'for this batch. While the LCS recovered outside of its acceptance range, the matrix spike (MS) recovery fell within both the acceptance range for the MS (80%-120%) and the acceptance range for the LCS (90%-
110%).
A second PT was successfully analyzed for this matrix.
CARR150825-971                       Root Cause Analysis of Strontium-89 (Sr-89)
EPA 905.0 ISO Documentation of PT Failures in RAD-103 for Strontium-89 in drinking The laboratory concluded that an unidentified random error water.                               caused the low bias for this batch because all quality control samples fell well within their acceptance ranges. We have reviewed the ERA Sr 89/90's from 2013-2015 to see if there is C-38

Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
                 &                                            DISPOSITION PE FAILURE any consistent issues. The failures in that time frame were both high and low bias failures and were not conducted by the same analyst. We have noticed that the failure came in the series run in the late summer whereas the ones in January/February have been acceptable. We also reviewed the instruments that were used in the hopes that a preparation or calibration was not properly conducted, but our findings were inconclusive.
Because of the short half-life of th.e Sr-89, the investigations have been post-failure review of the process and the data. In the same time frame, quarterly milk PT's have been run through a similar process (includes an additional column but the basic separation of Sr from daughter products is the same) with acceptable results.
Also, as a note, no procedural changes were made between the acceptable and failed results, i.e., the laboratory analyzed the unacceptable PTs the same way we ran the acceptable samples. The lab will continue to monitor the recoveries of this radionuclide to ensure that there are no issues.
A second PT (RAD-104) was successfully analyzed for this matrix CARR151130-993                       Root Cause Analysis of Strontium-90 (Sr-90)
ISO Documentation of PT Failures in  After a review of the data, an apparent reason for this RAD-102 for Strontium-90 in drinking discrepancy could not be determined. The following steps water.                               were taken to prove that this high bias was an isolated occurrence and that our overall process is within control.
The batch quality control samples were reviewed and found to be compliant. The LCS recovered at within acceptance range.
Laboratory control data were also reviewed for trends. No trends were noted .
                                      .The instrument calibrations were reviewed for positive biases that could have attributed to this failure. None were noted.
Sample duplicates were also prepared and counted along with the reported result. All results fell within the method's C-39

Donald C. Cook Nuclear Plant   Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
              &                                        DISPOSITION PE FAILURE acceptance range for duplicates.
Permanent Corrective/Preventive Actions or Improvements The laboratory must assume an unidentified random error caused the high bias for this batch. While the LCS recovered outside of its acceptance range, the matrix spike (MS) recovery fell within both the acceptance range for the MS (80%-120%) and the acceptance range for the LCS (90%-
110%).
C-40

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 Environmental TLDs Environmental dosimetry services for the reporting period of January - December, 2015 were provided by the Environmental Dosimetry Company (EDC) , Sterling , Massachusetts. The TLD systems at the EDC are calibrated and operated to ensure consistent and accurate evaluation of TLDs. The quality of the dosimetry results reported to EDC clients is ensured by in-house performance testing and independent performance testing by EDC clients.
The purpose of the dosimetry quality assurance program is to provide performance documentation of the routine processing of EDC dosimeters. Performance testing provides a statistical measure of the bias and precision of dosimetry processing against a reliable standard, which in turn points out any trends or performance changes . Dosimetry quality control tests are performed on EDC Panasonic 814 Environmental dosimeters. These tests include: (1) the in-house testing program conducted by the EDC QA Officer and (2) independent tests performed by EDC clients. In-house tests are performed using six pairs of 814 dosimeters, a pair is reported as an individual result and six pairs are reported as the mean result.
Excluded from this report are instrumentation checks. Although instrumentation checks represent an important aspect of the quality assurance program , they are not included as process checks in this report. Instrumentation checks represent between 5-10% of the TLDs processed.
Table C-6 provides a summary of individual dosimeter results evaluated against the EDC internal acceptance criteria for high-energy photons (Cs-137) only. The internal acceptance (tolerance) criteria for the Panasonic Environmental dosimeters are: +/- 15% for bias and +/- 12.8%
for precision . During this period , 100% (72/72) of the individual dosimeters, evaluated against these criteria met the tolerance limits for accuracy and 100% (72/72) met the criterion for precision .
Table C-7 provides the Bias + Standard deviation results for each group (N=6) of dosimeters evaluated against the internal tolerance criteria . Overall , 100% (12/12) of the dosimeter sets evaluated against the internal tolerance performance criteria met these criteria .
Table C-8 presents the independent blind spike results for irradiated dosimeters provided by client utilities during this annual period . All results passed the performance acceptance criterion .
Table C-6 Percentage of Individual Dosimeters That Passed EDC Internal Criteria January - December 2015( 1 ), !2l Number                                     % Passed Precision Dosimeter Type                            % Passed Bias Criteria Tested                                           Criteria Panasonic Environmental           72                   100                        100 1
         < lThis table summarizes results of tests conducted by EDC.
2
         < >Environmental dosimeter results  are free in air.
C-41

Donald C. Cook Nuclear Plant                 Annual Radiological Environmental Operating Report 2015 Table C-7 Mean Dosimeter Analyses ~N=6)
January - December 20151 ), 12l Standard        Tolerance Limit Process Date           Exposure Level     Mean Bias%
Deviation%            +/-15%
4/16/2015                  55                4.5                 1.1               Pass 4/28/2015                  91                2.7                 1.6               Pass 05/07/2015                  48                0.3                 1.3               Pass 7/22/2015                  28                1.5                 1.4               Pass 7/24/2015                 106                2.9                 1.8               Pass 8/06/2015                  77               -3 .3                1.3               Pass 10/30/2015                  28                3.7                2.2                Pass 11/04/2015                  63                2.5                 1.0               Pass 11 /22/2015                 85               -2 .9                1.7               Pass 1/27/2016                  61                3.1                0.9                Pass 1/31/2016                 112                2.2                 1.3               Pass 2/05/2016                  36                3.2                 1.4               Pass 1
(   l This table summarizes results of tests conducted by EDC for TLDs issued in 2015.
2
(   l Environmental dosimeter results are free in air.
Table C-8 Summary of Independent Blind Spike Dosimeter Testing January - December 2015( 1 ), l 2l Standard    Pass I Fail Issuance Period                 Client        Mean Bias%
Deviation%
1st Qtr. 2015           Millstone          -6 .5             2.9          Pass 2na Qtr.2015            Millstone          -2 .2             3.7          Pass 2na Qtr.2015            Seabrook            1.4              0.9          Pass 3ra Qtr. 2015           Millstone          -3.4              1.1          Pass 4tn Qtr.2015            Millstone          -1 .5             2.3          Pass 4tn Qtr.2015            Seabrook            0.8              1.8          Pass 1
(  l Performance criteria are +/- 30%.
2
(  l Blind spike irradiations using Cs-137 C-42

Donald C. Cook Nuclear Plant     Annual Radiological Environmental Operating Report 2015 APPENDIX D 2015 DATA 

==SUMMARY==

D-1

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC     FLAGS TYPE      STATION       U~N      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       364598001  117/2015     BETA        3.96E-02    2.05E-03     l.02E-03 AP         SBN       364598002  117/2015     BETA        3.61E-02     l.94E-03    1.0lE-03 AP         DOW       364598003  117/2015     BETA        3.61E-02     1.95E-03    1.0lE-03 AP         COL       364598004  117/2015     BETA        3.61E-02     1.92E-03    9.82E-04 AP         ONS-1     364598005  117/2015     BETA        4.07E-02    2.03E-03     9.70E-04 AP         ONS-2     364598006  117/2015     BETA        3.44E-02     1.86E-03    9.69E-04 AP         ONS-3     364598007  117/2015     BETA        3.72E-02    1.93E-03     9.64E-04 AP         ONS-4     364598008  117/2015     BETA        3.87E-02     1.96E-03    9.58E-04 AP         ONS-5     364598009  117/2015     BETA        3.79E-02    1.97E-03     9.90E-04 AP         ONS-6     364598010  117/2015     BETA        3.41E-02     1.85E-03    9.69E-04 AP         NBF       365202001 1114/2015     BETA        3.09E-02     1.78E-03    8.91E-04 AP         SBN       365202002 1/14/2015     BETA        3.36E-02     1.86E-03    8.88E-04 AP         DOW       365202003 1114/2015     BETA        3.37E-02    1.85E-03     8.81E-04 AP         COL       365202004 1114/2015     BETA        3.23E-02    1.82E-03     8.90E-04 AP         ONS-1     365202005 1114/2015     BETA        3.50E-02     1.91E-03    9.03E-04 AP         ONS-2     365202006 1114/2015     BETA        3.28E-02    1.85E-03     9.06E-04 AP         ONS-3     365202007 1/14/2015     BETA        3.26E-02     1.84E-03    9.0lE-04 AP         ONS-4     365202008 1/14/2015     BETA        3.IOE-02     1.77E-03    8.76E-04 AP         ONS-5     365202009 1/14/2015     BETA        3.60E-02    1.94E-03     9.02E-04 AP         ONS-6     365202010 1/14/2015     BETA        3.65E-02     1.94E-03    8.90E-04 AP         NBF       365672001 112112015     BETA        3.91E-02    2.05E-03     1.0lE-03 AP         SBN       365672002 1/21/2015     BETA        4.36E-02    2.15E-03     9.97E-04 AP         DOW       365672003 1/21/2015     BETA        3.60E-02     1.96E-03    1.0lE-03 AP         COL       365672004 1/2112015     BETA        3.70E-02    1.98E-03     1.00E-03 AP         ONS-1     365672005 1/21/2015     BETA        3.69E-02     1.97E-03    9.92E-04 AP         ONS-2     365672006 1/21/2015     BETA        3.44E-02     1.92E-03    1.0lE-03 AP         ONS-3     365672007 1/21/2015     BETA        3.79E-02    2.02E-03     1.0lE-03 AP         ONS-4     365672008 1/2112015     BETA        4.02E-02    2.07E-03     1.0lE-03 AP         ONS-5     365672009 112112015     BETA        3.38E-02     l.91E-03    l.02E-03 AP         ONS-6     365672010 112112015     BETA        3.49E-02     1.94E-03    1.0lE-03 AP        NBF        366148001 1/28/2015     BETA        2.07E-02    1.44E-03     9.86E-04 AP         SBN       366148002 1/28/2015     BETA        1.90E-02     l.37E-03    9.68E-04 AP         DOW       366148003 1/28/2015     BETA        2.57E-02     l.59E-03    9.73E-04 AP         COL       366148004 1/28/2015     BETA        2.22E-02     l.53E-03    l.04E-03 AP         ONS-1     366148005 1/28/2015     BETA        2.35E-02     l.56E-03    1.0lE-03 AP         ONS-2     366148006 1/28/2015     BETA        2.67E-02    1.66E-03     1.0lE-03 AP         ONS-3     366148007 1/28/2015     BETA        2.54E-02     l.59E-03    9.80E-04 AP         ONS-4     366148008 1/28/2015     BETA        2.97E-02    1.74E-03     9.99E-04 AP         ONS-5     366148009 1128/2015     BETA        2.51E-02     l.56E-03 . 9.51E-04 AP         ONS-6     366148010 1/28/2015     BETA        2.56E-02     1.61E-03    9.88E-04 AP        NBF        366679001 2/4/2015      BETA        2.58E-02     l.63E-03    9.48E-04 AP         SBN       366679002 2/4/2015      BETA        2.16E-02     l.49E-03    9.39E-04 AP         DOW       366679003 2/4/2015      BETA        2.39E-02     l.56E-03    9.34E-04 AP         COL       366679004 2/4/2015      BETA        2.48E-02     l.61E-03    9.63E-04 AP         ONS-1     366679005 2/4/2015      BETA        2.33E-02     l.55E-03    9.41E-04 AP         ONS-2     366679006 2/4/2015      BETA        2.72E-02     1.69E-03    9.61E-04 AP         ONS-3     366679007 2/4/2015      BETA        2.70E-02    1.65E-03     9.24E-04 AP         ONS-4     366679008 2/4/2015      BETA        2.58E-02     1.61E~03    9.20E-04 AP         ONS-5     366679009 2/4/2015      BETA        2.57E-02     1.60E-03    9.14E-04 AP         ONS-6     366679010 2/4/2015      BETA        2.32E-02     1.52E-03    9.15E-04 D-2

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN        DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         NBF       367176001   2/11/2015     BETA         3.50E-02    l.9IE-03    9.85E-04 AP         SBN       367176002   2/11/2015     BETA         3.77E-02    l.98E-03    9.77E-04 AP         DOW       367176003   2/11/2015     BETA         4.33E-02   2.IOE-03     9.61E-04 AP         COL       367176004   2111/2015     BETA         3.63E-02    l.96E-03    l.OOE-03 AP         ONS-1     367176005   2/11/2015     BETA         3.38E-02    1.87E-03    9.84E-04 AP         ONS-2     367176006   2/11/2015     BETA         3.41E-02    l.90E-03    l.OOE-03 AP         ONS-3     367176007   2/11/2015     BETA         3.44E"02    l.88E-03    9.69E-04 AP         ONS-4     367176008   2/11/2015     BETA         3.46E-02    l.90E-03    9.84E-04 AP         ONS-5     367176009   2/11/2015     BETA         4.36E-02   2.l lE-03    9.59E-04 AP         ONS-6     367176010   2/11/2015     BETA         3.67E-02    l.96E-03    9.90E-04 AP         NBF       367474001   2118/2015     BETA         2.81E-02    I.69E-03    9.35E-04 AP         SBN       367474002   2118/2015     BETA         3.24E-02    l.80E-03    9.23E-04 AP         DOW       367474003   2/18/2015     BETA        2.34E-02     l.51E-03    8.99E-04 AP         COL       367474004   2/18/2015     BETA         2.49E-02    l.60E-03    9.48E-04 AP         ONS-1     367474005   2/18/2015     BETA         3.07E-02    l.76E-03    9.29E-04 AP         ONS-2     367474006   2/18/2015     BETA         2.78E-02    l.67E-03    9.24E-04 AP         ONS-3     367474007   2/18/2015     BETA         2.75E-02    l.66E-03    9.20E-04 AP         ONS-4     367474008   2/18/2015     BETA        2.44E-02     l.57E-03    9.24E-04 AP         ONS-5     367474009   2/18/2015     BETA       *3.26E-02     I.79E-03    9.05E-04 AP         ONS-6     367474010   2/18/2015     BETA        2.89E-02     l.70E-03    9.20E-04 AP         NBF       372291001    4/1/2015    Ac-228       -3.81E-04   3.90E-04     l.12E-03 u AP         NBF       372291001    4/1/2015   Ag-108m        l.06E-04   8.74E-05     3.06E-04 u AP         NBF       372291001    4/1/2015   Ag-llOm       -3.80E-04   2.09E-04     4.lOE-04 u AP        NBF        372291001   4/1/2015     Ba-140       -4.52E-06   3.50E-02     l.13E-01 u AP        NBF        372291001   4/1/2015       Be-7        l.19E-Ol    l.02E-02    8.49E-03 AP         NBF       372291001   4/1/2015     Ce-141       -4.54E-04   7.94E-04     2.39E-03 u AP         NBF       372291001   4/1/2015     Ce-144       -6.68E-04   6.37E-04     l.83E-03 u AP         NBF       372291001    4/1/2015     Co-57       -l.94E-05   8.26E-05     2.48E-04 u AP         NBF       372291001    4/1/2015     Co-58        5.21E-04   2.70E-04     9.99E-04 u AP        NBF        372291001   4/1/2015      Co-60       -3.08E-05    l.53E-04    4.96E-04 u AP        NBF        372291001   4/1/2015      Cr-51       -l.08E-02   7.79E-03     l.76E-02 u AP         NBF       372291001   4/1/2015     Cs-134        l.74E-04    l.49E-04    5.00E-04 u AP        NBF        372291001   4/1/2015     Cs-137       -l.44E-04   1.15E-04     3.12E-04 u AP         NBF       372291001    4/1/2015     Fe-59       -6:23E-04   9.60E-04     2.76E-03 u AP         NBF       372291001    4/1/2015     I-131        6.58E-02    l.84E-01    O.OOE+OO UI AP        NBF        372291001   4/1/2015      K-40        2.41E-04     l.64E-03    6.03E-03 u AP        NBF        372291001   4/1/2015     La-140       2.65E-02     l.73E-02    6.89E-02 U AP        NBF        372291001   4/1/2015      Mn-54       -4.85E-05    l.30E-04    4.06E-04 U AP         NBF       372291001   4/1/2015      Nb-95        7.79E-04   3.20E-04     l.14E-03 u AP         NBF       372291001    4/1/2015    Ru-103        8.82E-05   4.43E-04     l.46E-03 u AP        NBF        372291001    4/1/2015    Ru-106        2.55E-04    l.16E-03    3.99E-03 u AP        NBF        372291001   4/1/2015     Sb-124       -6.12E-04   8.19E-04     2.20E-03 u AP        NBF        372291001   4/1/2015     Sb-125        l.84E-04   2.87E-04     9.82E-04 u AP        NBF        372291001    4/1/2015     Se-75       4.47E-05    2.09E-04     7.09E-04 u AP        NBF        372291001    4/1/2015    Th-228        3.42E-04   2.27E-04     6.26E-04 u AP         NBF       372291001    4/1/2015     Zn-65        5.37E-04   3:63E-04     l.34E-03 u AP        NBF        372291001 \ 4/1/2015      Zr-95        l.45E-03   7.04E-04     2.38E-03 u AP         SBN       372291002   4/1/2015     Ac-228       -1.86E-04   4.15E-04     l.27E-03 u AP         SBN       372291002   4/1/2015    Ag-108m       -l.35E-04   8.93E-05     2.25E-04 u AP         SBN       372291002    4/1/2015   Ag-llOm        l.98E-04    l.64E-04    5.98E-04 u D-3

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         SBN       372291002 4/112015    Ba-140       -5.58E-02   3.92E-02     l.06E-01 u AP         SBN       372291002 4/112015     Be-7         1.21E-01   9.93E-03     7.20E-03 AP         SBN       372291002 4/1/2015    Ce-141        8.99E-04   7.61E-04     2.60E-03 u AP         SBN       372291002 4/112015    Ce-144        6.28E-04   5.83E-04     l.82E-03 u AP         SBN       372291002 4/112015     Co-57       -2.65E-05   6.40E-05     2.IOE-04 u AP         SBN       372291002 4/112015     Co-58       -1.12E-04    1.73E-04    5.0IE-04 u AP         SBN       372291002 4/1/2015     Co-60        2.33E-04    1.53E-04    5.67E-04 u AP         SBN       372291002 4/112015     Cr-51        8.73E-03   6.14E-03     2.lOE-02 u AP         SBN       372291002 4/112015    Cs-134       -2.58E-05    l.31E-04    4.19E-04 u AP         SBN       372291002 4/112015    Cs-137       -4.98E-05   9.95E-05     3.lOE-04 u AP         SBN       372291002 4/112015     Fe-59       -9.38E-04   6.14E-04     1.06E-03 u AP         SBN       372291002 4/112015     I-131        2.29E-01    l.46E-01    O.OOE+OO UI AP         SBN       372291002 4/112015     K-40       . 1.0IE-03    l.22E-03    5.03E-03 u AP         SBN       372291002 4/1/2015    La-140        5.91E-03   9.54E-03     3.62E-02 U AP         SBN       372291002 4/112015     Mn-54       -l.77E-04    l.29E-04    3.24E-04 U AP         SBN       372291002 4/11201.5    Nb-95.      -5.82E-04   2.99E-04     6.97E-04 U AP         SBN       372291002 4/112015    Ru-103       -3.72E-04   3.81E-04     l.13E-03 u AP         SBN       372291002 4/112015    Ru-106       -2.13E-03    1.1 IE-03   2.51E-03 u.
AP         SBN       372291002 4/1/2015    Sb-124        7.76E-04   6.13E-04     2.43E-03 u AP         SBN       372291002 4/1/2015    Sb-125       -3.llE-05   2.73E-04     8.68E-04 U AP         SBN       372291002 4/1/2015     Se-75        8.14E-05    1.92E-04    6.44E-04 U AP         SBN       372291002 4/112015    Th-228        4.77E-04   2.30E-04     6.0SE-04 u AP         SBN       372291002 4/1/2015     Zn-65       -5.50E-04   3.46E-04     7.54E-04 u AP         SBN       372291002 4/1/2015     Zr-95        7.95E-04   3.39E-04     1.32E-03 u AP        DOW        372291003 4/112015    Ac-228       -9.21E-04   5.llE-04     l.41E-03 u AP        DOW        372291003 4/112015   Ag-108m       -5.94E-05   8.41E-05     2.66E-04 u AP        DOW        372291003 4/1/2015   Ag-llOm        3.36E-05    l.85E-04    6.17E-04 u AP        DOW        372291003 4/112015    Ba-140       -2.65E-02   4.19E-02     l.31E-Ol u AP        DOW        372291003 4/112015     Be-7         9.96E-02   8.63E-03     7.97E-03 AP        DOW        372291003 4/112015    Ce-141       -1.18E-03   8.65E-04     2.36E-03 u AP         DOW       372291003 4/112015    Ce-144       -l.55E-03   7.22E-04     1.77E-03 u AP         DOW       372291003 4/112015     Co-57        6.79E-06   7.07E-05     2.33E-04 u AP         DOW       372291003 4/112015     Co-58       -3.40E-04   2.llE-04     5.22E-04 u AP         DOW       372291003 4/1/2015    .Co-60       -5.99E-07    l.33E-04    4.37E-04 u AP         DOW       372291003 4/112015     Cr-51       -1.43E-02   7.53E-03     l.94E-02 u AP        DOW        372291003 4/1/2015    Cs-134       -2.39E-04    l.27E-04    3.29E-04 u AP        DOW        372291003 4/1/2015    Cs-137       -1.0SE-04    l.OSE-04    3.llE-04 u AP        DOW        372291003 4/112015     Fe-59       -7.55E-04   7.12E-04     2.0IE-03 u AP         DOW       372291003 4/112015     I-131       -l.41E-01    l.69E-01   O.OOE+OO  u AP         DOW       372291003 4/112015     K-40         2.0IE-03    l.25E-03    4.14E-03 u AP         DOW       372291003 4/112015    La-140       -5.84E-03    l.75E-02    5.59E-02 u AP         DOW       372291003 4/112015    Mn-54         l.72E-04    l.31E-04    4.58E-04 u AP         DOW       372291003 4/112015     Nb-95       -l.53E-04   2.54E-04     7.33E-04 u AP         DOW       372291003 4/1/2015    Ru-103        2.14E-03   8.55E-04     l.28E-03 u~
AP         DOW       372291003 4/112015    Ru-106       -4.20E-06    1.34E-03    3.73E-03 u AP         DOW       372291003 4/112015    Sb-124       -1.46E-03   8.40E-04     l.89E-03 u AP        DOW        372291003 4/112015    Sb-125        l.43E-05   2.57E-04     8.64E-04 u AP        DOW        372291003 4/112015     Se-75       -5.25E-05   2.17E-04     6.41E-04 u AP        DOW        372291003 4/112015    Th-228        1.26E-04    l.99E-04    6.16E-04 u AP        DOW        372291003 4/112015     Zn-65       -2.56E-04   2.67E-04     7.70E-04 u D-4

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN     DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         DOW       372291003 4/112015     Zr-95       l.37E-04    4.18E-04     l.43E-03 u AP         COL       372291004 4/1/2015    Ac-228      -2.16E-04    5.68E-04     2.04E-03 u AP         COL       372291004 4/1/2015   Ag-108m      -5.41E-05    9.57E-05     2.97E-04 u AP         COL       372291004 4/1/2015   Ag-llOm      -2.32E-04    2.30E-04     6.41E-04 u AP         COL       372291004 4/1/2015    Ba-140      -6.32E-02    5.07E-02     l.35E-Ol u AP         COL       372291004 4/112015      Be-7       l.IIE-01    9.73E-03     l.08E-02 AP         COL       372291004 4/1/2015    Ce-141       8.43E-04    9.28E-04     3.14E-03 u AP         COL       372291004 4/1/2015    Ce-144      -6.69E-05    6.25E-04     2.05E-03 u AP         COL       372291004 4/1/2015     Co-57       l.49E-04     1.0IE-04    3.42E-04 u AP         COL       372291004 4/112015     Co-58      -l.16E-04    2.19E-04     6.64E-04 u AP         COL       372291004 4/112015     Co-60       2.25E-05     l.60E-04    5.48E-04 u AP         COL       372291004 4/112015     Cr-51      -6.13E-03    8.61E-03     2.73E-02 u AP         COL       372291004 4/112015    Cs-134      -l.07E-04     l.64E-04    5.03E-04 u AP         COL       372291004 4/112015    Cs-137       2.3IE-04     l.25E-04    4.40E-04 u AP         COL       372291004 4/1/2015     Fe-59       3.39E-04    8.98E-04     3.lOE-03 u AP         COL       372291004 4/1/2015     1-131       2.29E-02    2.22E-Ol    O.OOE+OO UI AP         COL       372291004 4/1/2015     K-40        2.00E-03     l.84E-03    7.12E-03 u AP         COL       372291004 4/112015    La-140       7.39E-03     l.25E-02    4.76E-02 u AP         COL       372291004 4/112015    Mn-54       -l.53E-04     l.38E-04    3.72E-04 u AP         COL       372291004 4/112015     Nb-95      -2.34E-05    2.55E-04     8.46E-04 u AP         COL       372291004 4/112015    Ru-103       7.62E-05    5.46E-04     l.81E-03 u AP         COL       372291004 4/1/2015    Ru-106      -4.03E-04     l.19E-03    3.67E-03 u AP         COL       372291004 4/112015    Sb-124       4.70E-06    9.94E-04     3.28E-03 u AP        COL        372291004 4/1/2015    Sb-125      -5.43E-04    3.24E-04     7.97E-04 u AP         COL       372291004 4/112015     Se-75       2.00E-04    2.25E-04     7.51E-04 u AP         COL       372291004 4/112015    Th-228       8.45E-07    2.30E-04     7.82E-04 u AP         COL       372291004 4/112015     Zn-65      -l.13E-03    5.16E-04     8.67E-04 u AP         COL       372291004 4/112015     Zr-95       7.58E-04    5.07E-04     l.90E-03 u AP         ONS-1     372291005 4/1/2015    Ac-228      -4.9IE-04    5.57E-04     l.71E-03 u AP        ONS-1      372291005 4/1/2015   Ag-108m      -9.85E-06    8.98E-05     2.96E-04 u AP         ONS-1     372291005 4/112015   Ag-llOm       9.50E-05    2.23E-04     7.46E-04 u AP         ONS-1     372291005 4/112015    Ba-140      -l.53E-02    3.68E-02     l.15E-Ol u AP         ONS-1     372291005 4/112015     Be-7        l.27E-Ol    9.32E-03. 9.04E-03 AP         ONS-1     372291005 4/112015    Ce-141      -2.51E-04    8.80E-04     2.73E-03 u AP         ONS-1     372291005 4/1/2015    Ce-144       l.02E-03    6.67E-04     2.19E-03 u AP        ONS-1      372291005 4/1/2015     Co-57       2.32E-05    7.85E-05     2.59E-04 u AP         ONS-1     372291005 4/112015     Co-58      -8.58E-05    2.60E-04     8.23E-04 u AP         ONS-1     372291005 4/112015     Co-60      -l.39E-04     l.40E-04    4.03E-04 u AP         ONS-1     372291005 4/112015     Cr-51      -5.00E-03    7.14E-03     2.13E-02 u AP         ONS-1     372291005 4/112015    Cs-134       l.12E-04     l.35E-04    4.66E-04 u AP         ONS-1     372291005 4/112015    Cs-137       2.68E-04     l.37E-04    4.65E-04 u AP        ONS-1      372291005 4/1/2015     Fe-59       6.92E-04    8.25E-04     2.90E-03 u AP         ONS-1     372291005 4/1/2015     1-131       3.45E-Ol    2.00E-01    O.OOE+OO UI AP         ONS-1     372291005 4/112015     K-40        9.87E-04     l.66E-03    6.02E-03 u AP         ONS-1     372291005 4/l/20l5    La-140      -2.90E-02     l.92E-02    3.94E-02 u AP         ONS-1     372291005 4/1/2015     Mn-54      -l.73E-05     l.36E-04    4.40E-04 u AP        ONS-1      372291005 4/1/2015     Nb-95      -l.23E-04    2.84E-04     8.96E-04 u AP        ONS-1      372291005 411/2015    Ru-103       4.86E-04    4.89E-04     l.66E-03 u AP         ONS-1     372291005 4/112015    Ru-106      -2.27E-04    9.71E-04     3.20E-03 u AP         ONS-1     372291005 4/112015    Sb-124      -4.65E-05    7.25E-04     2.34E-03 u D-5

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-1     372291005 4/112015    Sb-125      -1.43E~04    2.90E-04     9.26E-04 u AP         ONS-1     372291005 4/112015     Se-75       1.51E-04    2.14E-04     6.99E-04 u AP         ONS-1     372291005 4/112015    Th-228       1.34E-06    3.21E-04     5.39E-04 u AP         ONS-1     372291005 4/112015     Zn-65      -1.19E-04    3.42E-04     l.09E-03 u AP         ONS-1     372291005 4/1/2015     Zr-95      -8.07E-05    4.82E-04     1.57E-03 u AP         ONS-2     372291006 4/112015    Ac-228       8.21E-04    4.96E-04     1.77E-03 u AP         ONS-2     372291006 4/112015   Ag-108m       2.16E-05    8.28E-05     2.40E-04 u AP         ONS-2     372291006 4/112015   Ag-llOm      -5.56E-05     1.73E-04    5.38E-04 u AP         ONS-2     372291006 4/1/2015    Ba-140       6.17E-03    3.56E-02     1.22E-01 u AP         ONS-2     372291006 4/112015     Be-7        l.37E-01     1.03E-02    6.75E-03 AP         ONS-2     372291006 4/112015    Ce-141      -2.98E-05    6.91E-04     2.32E-03 u AP         ONS-2     372291006 4/1/2015    Ce-144       9.93E-05    5.04E-04     l.72E-03 u AP         ONS-2     372291006 4/112015     Co-57       9.43E-05    6.84E-05     2.36E-04 u AP         ONS-2     372291006 4/1/2015     Co-58      -6.0lE-05    2.24E-04     7.lOE-04 u AP         ONS-2     372291006 4/1/2015     Co-60      -6.94E-05     1.08E-04    3.13E-04 u AP         ONS-2     372291006 4/1/2015     Cr-51      -4.21E-03    6.43E-03     1.97E-02 u AP         ONS-2     372291006 4/112015    Cs-134      -3.08E-05     1.24E-04    3.95E-04 u AP         ONS-2     372291006 4/1/2015    Cs-137       1.45E-04     1.12E-04    3.99E-04 u AP         ONS-2     372291006 4/1/2015     Fe-59      -3.24E-04    7.59E-04     2.26E-03 u AP         ONS-2     372291006 4/112015     I-131      -1.lOE-01     1.67E-01    O.OOE+OO u AP         ONS-2     372291006 4/112015     K-40        l.78E-03     l.38E-03    5.64E-03 u AP         ONS-2     372291006 4/1/2015    La-140       1.07E-02     l.IOE-02
* 4.32E-02 u AP         ONS-2     372291006 4/112015    Mn-54       -4.74E-05     l.31E-04    4.lOE-04 u AP        ONS-2      372291006 4/112015     Nb-95      -4.36E-04    2.15E-04     4.47E-04 u AP         ONS-2     372291006 4/1/2015    Ru-103       4.58E-04    3.57E-04     l.29E-03 u AP         ONS-2     372291006 4/1/2015    Ru-106       1.lOE-04     1.lOE-03    3.71E-03 u AP         ONS-2     372291006 4/1/2015    Sb-124      -1.07E-03    6.99E-04     l.22E-03 u AP         ONS-2     372291006 4/1/2015    Sb-125      -2.21E-04    2.95E-04     7.28E-04 u AP         ONS-2     372291006 4/112015     Se-75       l.27E-05     1.65E-04    5.45E-04 u AP        ONS-2      372291006 4/112015    Th-228       4.40E-04    2.65E-04     6.03E-04 u AP         ONS-2     372291006 4/1/2015     Zn-65      -4.67E-05    3.16E-04     9.96E-04 u AP         ONS-2     372291006 4/1/2015     Zr-95      -3.53E-07    4.25E-04     1.40E-03 u AP         ONS-3     372291007 4/112015    Ac-228       7.59E-04    6.44E-04     2.25E-03 u AP         ONS-3     372291007 4/1/2015   Ag-108m       1.97E-04     l.18E-04    3.71E-04 u AP         ONS-3     372291007 4/112015   Ag-llOm      -2.50E-05     1.91E-04    6.03E-04 u AP         ONS-3     372291007 4/1/2015    Ba-140      -l.13E-02    3.73E-02     l.21E-Ol u AP         ONS-3     372291007 4/1/2015     Be-7        1.41E-01     1.14E-02    8.54E-03 AP         ONS-3     372291007 4/112015    Ce-141      -1.68E-04    7.84E-04     2.57E-03 u AP         ONS-3     372291007 4/1/2015    Ce-144      -5.50E-04    6.19E-04     l.89E-03 u AP         ONS-3     372291007 4/112015     Co-57      -8.40E-06    7.86E-05     2.61E-04 u AP         ONS-3     372291007 4/1/2015     Co-58      -4.71E-04    3.50E-04     8.88E-04 u AP         ONS-3     372291007 4/1/2015     Co-60       4.22E-05     1.41E-04    4.82E-04 u AP         ONS-3     372291007 4/112015     Cr-51      -5.38E-03    6.86E-03     2.lOE-02 u AP         ONS-3     372291007 4/112015    Cs-134      -1.66E-04     l.50E-04    3.93E-04 u AP         ONS-3   . 372291007 4/112015    Cs-137      -4.14E-05     l.25E-04    3.97E-04 u AP         ONS-3     372291007 4/112015     Fe-59      -5.99E-04    8.02E-04     2.23E-03 u AP         ONS-3     372291007 4/112015     I-131       5.19E-02    2.09E-01     O.OOE+OO UI AP         ONS-3     372291007 4/112015     K-40       -5.03E-04     1.52E-03    5.35E-03 u AP         ONS-3     372291007 4/112015    La-140       2.18E-02     1.69E-02    6.73E-02 u AP         ONS-3     372291007 4/112015    Mn-54       -1.65E-04    2.06E-04     6.0lE-04 u D-6

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-3     372291007 4/1/2015     Nb-95      -2.59E-06     2.82E-04    9.23E-04  u AP         ONS-3     372291007 4/1/2015    Ru-103       l.13E-04     4.40E-04    1.46E-03  u AP         ONS-3     372291007 4/1/2015    Ru-106      -l.77E-03     l.31E-03    3.44E-03  u AP         ONS-3     372291007 4/1/2015    Sb-124      -3.59E-04     8.07E-04    2.36E-03  u AP         ONS-3     372291007 4/1/2015    Sb-125      -5.20E-05     3.48E-04    1.12E-03  u AP         ONS-3     372291007 4/1/2015     Se-75       3.llE-04   . 2.49E-04    8.48E-04  u AP         ONS-3     372291007 4/1/2015    Th-228       2.69E-04     2.48E-04    7.31E-04  u AP         ONS-3     372291007 4/1/2015     Zn-65       3.62E-05     4.25E-04    1.42E-03  u AP         ONS-3     372291007 4/1/2015     Zr-95       l.28E-04     3.05E-04    1.0SE-03  u AP         ONS-4     372291008 4/1/2015    Ac-228       8.20E-04     4.81E-04    l.83E-03  u AP         ONS-4     372291008 4/1/2015   Ag-108m       6.21E-05     8.77E-05    3.04E-04  u AP         ONS-4     372291008 4/1/2015   Ag-1 lOm      1.68E-04     2.05E-04    7.07E-04  u AP         ONS-4     372291008 4/1/2015    Ba-140       4.31E-02     4.32E-02    l.50E-01  u AP         ONS-4     372291008 4/1/2015     Be-7        l.09E-01     9.78E-03    8.32E-03 AP         ONS-4     372291008 4/1/2015    Ce-141       l.09E-03     7.19E-04    2.21E-03  u AP         ONS-4     372291008 4/1/2015    Ce-144       6.40E-04     5.93E-04    2.0lE-03  u AP         ONS-4     372291008 4/1/2015     Co-57       6.35E~o5     7.69E-05    2.61E-04  u AP         ONS-4     372291008 4/1/2015     Co-58       5.61E-04     2.47E-04    8.65E-04  u AP         ONS-4     372291008 4/1/2015     Co-60       7.26E-06     5.60E-05    1.92E-04  u AP         ONS-4     372291008 4/1/2015     Cr-51       7.96E-03     6.98E-03    2.33E-02  u AP         ONS-4     372291008 411/2015    Cs-134      -4.62E-05     l.32E-04    4.09E-04  u AP         ONS-4     372291008 4/1/2015    Cs-137       l.89E-04     l.21E-04    4.24E-04  u AP         ONS-4     372291008 4/1/2015. Fe-59      -1.llE-03     8.62E-04    2.23E-03  u AP         ONS-4     372291008 4/1/2015     1-131      -l.63E-01     1.78E-01   O.OOE+OO   u AP         ONS-4     372291008 4/1/2015     K-40       -l.71E-03     l.66E-03    5.39E-03  u AP         ONS-4     372291008 4/1/2015    La-140       2.00E-02     l.55E-02    5.88E-02  u AP         ONS-4     372291008 411/2015     Mn-54       l.03E-04     l.25E-04    4.35E-04  u AP         ONS-4     372291008 4/1/2015     Nb-95      -3.09E-04     3.63E-04    8.73E-04  u AP         ONS-4     372291008 411/2015    Ru-103       l.OlE-04     4.78E-04    l.61E-03  u AP         ONS-4     372291008 4/1/2015    Ru-106      -1.07E-05     l.12E-03    3.67E-03  u AP         ONS-4     372291008 4/1/2015    Sb-124      -5.91E-05     6.46E-04    2.05E-03  u AP         ONS-4     372291008 4/1/2015    Sb-125      -5.91E-05     2.79E-04    9.20E-04  u AP         ONS-4     372291008 4/1/2015     Se-75       2.46E-04     2.12E-04    6.40E-04  u AP         ONS-4     372291008 4/1/2015    Th-228       3.31E-05     l.73E-04    5.81E-04  u AP         ONS-4     372291008 4/1/2015     Zn-65      -3.13E-04     3.27E-04    9.29E-04  u AP         ONS-4     372291008 4/1/2015     Zr-95      -1.16E-03     6.19E-04    1.26E-03  u AP         ONS-5     372291009 4/1/2015    Ac-228       1.72E-05     5.17E-04    1.SOE-03  u AP         ONS-5     372291009 4/1/2015   Ag-108m       2.21E-04     l.llE-04    3.79E-04  u AP         ONS-5     372291009 4/1/2015   Ag-llOm       l.12E-04     2.03E-04    6.95E-04  u AP         ONS-5     372291009 4/1/2015    Ba-140      -8.68E-03     4.49E-02    1.47E-01  u AP         ONS-5     372291009 4/1/2015     Be-7        1.22E-01     1.0lE-02    8.90E-03 AP         ONS-5     372291009 4/1/2015    Ce-141      -4.79E-04     7.24E-04    2.34E-03  u AP         ONS-5     372291009 4/1/2015    Ce-144      -9.54E-04     6.38E-04    1.86E-03  u AP         ONS-5     372291009 4/1/2015     Co-57      -3.66E-06     8.52E-05    2.70E-04. u AP         ONS-5     372291009 4/1/2015     Co-58      -3.62E-04     2.30E-04    4.95E-04  u AP         ONS-5     372291009 4/1/2015     Co-60      -4.50E-05     9.55E-05    2.76E-04  u AP         ONS-5     372291009 4/1/2015     Cr-51      -5.22E-03     7.32E-03    2.23E-02  u AP         ONS-5     372291009 4/1/2015    Cs-134       l.19E-04     l.51E-04    5.21E-04  u AP         ONS-5     372291009 4/1/2015    Cs-137      -1.67E-04     l.46E-04    4.68E-04  u AP         ONS-5     372291009 4/1/2015     Fe-59       3.09E-05     6.47E-04    2.17E-03  u D-7

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC        STD.DEV.      MDC        FLAGS TYPE      STATION       LSN      DATE       NUCLIDE       (pCi/m3)       (pCi/m3)  (pCi/m3)
AP         ONS-5     372291009  4/112015      I-131      l.22E-Ol        l.92E-Ol O.OOE+OO  UI AP         ONS-5     372291009  4/112015      K-40       2.70E-03       2.lOE-03   8.14E-03 U AP         ONS-5     372291009  4/112015     La-140      l.62E-03        1.13E-02  3.91E-02 u AP         ONS-5     372291009  4/112015     Mn-54      -l.22E-04        1.42E-04  4.00E-04 U AP         ONS-5     372291009  4/112015     Nb-95      -l.48E-04       3.23E-04   l.02E-03 U AP         ONS-5     372291009  4/1/2015     Ru-103     -2.80E-04       4.56E-04   l.44E-03 U AP         ONS-5     372291009  4/112015     Ru-106      7.43E-04        1.13E-03  3.93E-03 U AP         ONS-5     372291009  4/1/2015     Sb-124      4.33E-05       6.68E-04   2.26E-03 U AP         ONS-5     372291009  4/1/2015     Sb-125      3.66E-04       2.83E-04   9.72E-04 U AP         ONS-5     372291009  4/112015      Se-75     -2.91E-05        l.95E-04  6.36E-04 U AP         ONS-5     372291009  4/112015     Th-228     -4.61E-05        1.76E-04  5.94E-04 U AP         ONS-5     372291009  4/112015     Zn-65      -3.45E-04       3.46E-04   9.63E-04 U AP         ONS-5     372291009  4/1/2015      Zr-95      2.53E-04       3.63E-04   l.29E-03 U AP         ONS-6     372291010  4/1/2015     Ac-228      l.30E-04       4.02E-04   l.43E-03 U AP         ONS-6     372291010  4/1/2015 . Ag-108m      4.62E-05       8.90E-05   3.02E-04 U AP         ONS-6     372291010  4/1/2015    Ag-llOm      5.78E-05        1.66E-04  5.76E-04 U AP         ONS-6     372291010  4/1/2015     Ba-140      4.33E-02       4.35E-02   l.51E-01 u AP         ONS-6     372291010  4/1/2015      Be-7       l.31E-Ol        l.04E-02  8.16E-03 AP         ONS-6     372291010  4/1/2015     Ce-141      2.91E-03        l.06E-03  3.13E-03 U AP         ONS-6     372291010  4/1/2015     Ce-144     -l.79E-04       7.21E-04   2.24E-03 U AP         ONS-6     372291010  4/1/2015     Co-57       l.42E-04       8.71E-05   2.86E-04 U AP         ONS-6     372291010  4/1/2015     Co-58      -8.0lE-04       3.81E-04   5.02E-04 U AP         ONS-6     372291010  4/1/2015     Co-60       l.24Ec04        l.44E-04  5.20E-04 U AP         ONS-6     372291010  4/1/2015      Cr-51     -6.81E-03       7.32E-03   2.20E-02 U AP         ONS-6     372291010  4/1/2015     Cs-134     -l.llE-05       l.32E-04   4.35E-04 U AP         ONS-6     372291010  4/1/2015     Cs-137      4.97E-05        l.06E-04  3.74E-04 U AP         ONS-6     372291010  4/1/2015      Fe-59      5.58E-04       7.55E-04   2.87E-03 U AP         ONS-6     372291010  4/1/2015      I-131      3.12E-Ol       2.02E-01  O.OOE+OO  UI AP         ONS-6     372291010  4/1/2015      K-40       l.50E-03        l.75E-03  6.63E-03 U AP        ONS-6      372291010  4/112015     La-140     -l.72E-02       l.88E-02   5.08E-02 U AP        ONS-6      372291010  4/1/2015     Mn-54      -2.21E-05       l.33E-04   4.32E-04 U AP         ONS-6     372291010  411/2015     Nb-95       4.97E-05       2.92E-o4   9.92E-04 U AP         ONS-6     372291010  4/1/2015     Ru-103      8.~lE-05      A.24E-04    l.40E-03 U AP         ONS-6     372291010  4/1/2015     Ru-106     -2.59E-04       9.40E-04   2.88E-03 U AP         ONS-6     372291010  4/1/2015     Sb-124      3.34E-05       7.4~E-04   2.49E-03 U AP        ONS-6      372291010  4/112015     Sb-125      l.66E-04    - 3*.2if:-04  l.09E-03 U AP        ONS-6      372291010  4/1/2015      Se-75      l.62E-04    .* 2.13E-o4   7.34E-04 U AP        ONS-6      372291010  4/1/2015     Th-228      l.83E-04    : 1.89E:-o4   6.50E-04 U AP        ONS-6      372291010  4/1/2015     Zn-65       3.91E-04       3.70E-o4   l.33E-03 U AP         ONS-6     372291010  4/1/2015      Zr-95      3.58E-05  : -5.22f-04     l.76E-03 U AP        NBF        367835001 2/25/2015     BETA        5.51E-02   ~ 2.3$~-03     8.57E-04 AP        SBN        367835002 2/25/2015     BETA        5.84E-02       2.48E-03 f  ~ ~
8.77E-04 AP        DOW        367835003 2/25/2015     BETA        6.07E-02       2.50~-03   8.60E-04 AP        COL        367835004 2/25/2015     BETA        5.20E-02       2.31E-03   8.64E-04 AP        ONS-1      367835005 2/25/2015     BETA        5.24E-02       2.33E-03   8.72E-04 AP        ONS-2      367835006 2/25/2015     BETA        6.14E-02  .-~  25iiE-03
                                                                          .. 0     8.54E-04 AP        ONS-3      367835007 2/25/2015     BETA        5.67E-02    I  2.45&#xa3;-03   8.85E-04 AP        ONS-4      367835008 2/25/2015     BETA        5.50E-02    :--2:43&#xa3;-03   8.99E-04 AP        ONS-5      367835009 2/25/2015     BETA        5.78E-02       2.47E-03   8.82E-04 AP        ONS-6      367835010 2/25/2015     BETA        5.16E-02       2.31E-03   8.70E-04
:: ~I      ,.
D-8

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC     FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        NBF        368255001 2/28/2015     BETA        3.44E-02     l.88E-03    9.55E-04 AP         SBN       368255002 2/28/2015     BETA        3.38E-02     1.88E-03    9.72E-04 AP         DOW       368255003 2/28/2015     BETA        2.83E-02     1.70E-03    9.55E-04 AP         COL       368255004 2/28/2015     BETA        3.39E-02     1.86E-03    9.58E-04 AP         ONS-1     368255005  3/1/2015     BETA        2.90E-02     1.74E-03    9.82E-04 AP         ONS-2     368255006  3/1/2015     BETA        2.84E-02     1.70E-03    9.51E-04 AP         ONS-3     368255007  3/1/2015     BETA        3.22E-02     1.84E-03    9.80E-04 AP         ONS-4     368255008  3/1/2015     BETA        2.86E-02     1.71E-03    9.52E-04 AP         ONS-5     368255009  3/1/2015     BETA        2.92E-02     1.72E-03    9.47E-04 AP         ONS-6     368255010  3/1/2015     BETA        3.23E-02     1.83E-03    9.68E-04 AP         NBF       368784001  3/7/2015     BETA        2.71E-02     1.68E-03    9.81E-04 AP         SBN       368784002  3/7/2015     BETA        2.60E-02     1.62E-03    9.58E-04 AP         DOW       368784003  3/7/2015     BETA        2.50E-02    1.61E-03     9.80E-04 AP         COL       368784004  3/7/2015     BETA        3.35E-02    1.88E-03     9.90E-04 AP         ONS-1     368784005  3/8/2015     BETA        2.64E-02     1.67E-03    9.95E-04 AP         ONS-2     368784006  3/8/2015     BETA        2.58E-02     1.64E-03    9.77E-04 AP         ONS-3     368784007  3/8/2015     BETA        2.88E-02     1.72E-03    9.71E-04 AP         ONS-4     368784008  3/8/2015     BETA        2.69E-02    1.68E-03     9.88E-04 AP         ONS-5     368784009  3/8/2015     BETA        2.85E-02    1.72E-03     9.75E-04 AP         ONS-6     368784010  3/8/2015     BETA        2.87E-02    1.74E-03     9.97E-04 AP        NBF        369215001 3/14/2015     BETA        2.36E-02     1.55E-03    9.64E-04 AP         SBN       369215002 3/14/2015     BETA        2.31E-02     1.54E-03    9.71E-04 AP         DOW       369215003 3/14/2015     BETA        2.42E-02     1.57E-03    9.57E-04 AP         COL       369215004 3/14/2015     BETA        2.25E-02    1.54E-03     9.92E-04 AP         ONS-1     369215005 3/14/2015     BETA        2.58E-02    1.65E-03     1.00E-03 AP         ONS-2     369215006 3/14/2015     BETA        2.72E-02    1.67E-03     9.64E-04 AP         ONS-3     369215007 3/15/2015     BETA        2.57E-02    1.61E-03     9.51E-04 AP         ONS-4     369215008 3/15/2015     BETA        2.65E-02     l.67E-03    9.95E-04 AP         ONS-5     369215009 3/15/2015     BETA        2.86E-02     1.72E-03    9.81E-04 AP         ONS-6     369215010 3/15/2015     BETA        2.61E-02     1.66E~03    9.95E-04 AP        NBF        369628001 3/21/2015     BETA        2.73E-02    1.69E-03     l.04E-03 AP         SBN       369628002 3/2112015     BETA        2.55E-02    1.63E-03     l.03E-03 AP         DOW       369628003 3/21/2015     BETA        2.35E-02    1.56E-03     l.03E-03 AP         COL       369628004 3/21/2015     BETA        2.64E-02     1.67E-03    l.05E-03 AP         ONS-1     369628005 3/21/2015     BETA        2.78E-02     l.72E-03    l.05E-03 AP         ONS-2     369628006 3/21/2015     BETA        2.58E-02    1.63E-03     l.02E-03 AP         ONS-3     369628007 3/22/2015     BETA        2.65E-02    1.69E-03     1.06E-03 AP         ONS-4     369628008 3/22/2015     BETA        2.66E-02     l.70E-03    1.07E-03 AP         ONS-5     369628009 3/22/2015     BETA        2.87E-02    1.73E-03     l.03E-03 AP         ONS-6     369628010 3/22/2015     BETA        2.60E-02     1.67E-03    l.06E-03 AP        NBF        370078001 3/28/2015     BETA        2.08E-02     l.49E-03    1.06E-03 AP        SBN        370078002 3/28/2015     BETA        2.00E-02    1.45E-03     1.04E-03 AP        DOW        370078003 3/28/2015     BETA        1.84E-02    1.39E-03     l.04E-03 AP         COL       370078004 3/28/2015     BETA        1.93E-02    1.43E-03     1.05Ec03 AP         ONS-1     370078005 3/28/2015     BETA        2.27E-02     l.56E-03    l.06E-03 AP         ONS-2     370078006 3/28/2015     BETA        2.09E-02     1.48E-03    l.04E-03 AP         ONS-3     370078007 3/29/2015     BETA        2.0lE-02    1.47E-03     l.07E-03 AP         ONS-4     370078008 3/29/2015     BETA        1.90E-02    1.43E-03     1.07E-03 AP         ONS-5     370078009 3/29/2015     BETA        l.92E-02    1.43E-03     l.05E-03 AP         ONS-6     370078010 3/29/2015     BETA        1.66E-02     1.33E-03    l.06E-03 D-9

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE       NUCLIDE       (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       370818001 4/4/2015     BETA         2.40E-02     1.60E-03    1.02E-03 AP         SBN       370818002 4/4/2015     BETA         2.25E-02     l.55E-03    1.03E-03 AP         DOW       370818003 4/4/2015     BETA         2.41E-02     1.60E-03    1.02E-03 AP         COL       370818004 4/4/2015     BETA         2.36E-02     1.59E-03    1.02E-03 AP         ONS-1     370818005 41512015     BETA         2.14E-02     1.52E-03    l.03E-03 AP         ONS-2     370818006 4/5/2015     BETA         2.44E-02     1.59E-03    9.91E-04 AP         ONS-3     370818007 4/5/2015     BETA         2.22E-02     l.53E-03    1.0lE-03 AP         ONS-4     370818008 4/5/2015     BETA         2.lOE-02     1.50E-03    1.02E-03 AP         ONS-5     370818009 4/5/2015     BETA         2.44E-02     1.61E-03    1.0lE-03 AP         ONS-6     370818010 4/5/2015     BETA         2.23E-02     1.54E-03    1.02E-03 AP         NBF       371275001 4/15/2015    BETA         2.89E-02     1.76E-03    1.02E-03 AP         SBN       371275002 4/15/2015    BETA         2.73E-02     1.73E-03    1.04E-03 AP         DOW       371275003 4/15/2015    BETA         1.99E-02     1.47E-03    1.03E-03
* AP         COL       371275004 4/15/2015    BETA         2.12E-02     1.51E-03    l.02E-03 AP         ONS-1     371275005 4/15/2015    BETA         2.50E-02     l.65E-03    l.04E-03 AP         ONS-2     371275006 4/15/2015    BETA         2.19E-02     l.52E-03    9.98E-04 AP         ONS-3     371275007 4/15/2015    BETA         2.27E-02     1.49E-03    9.35E-04 AP         ONS-4     371275008 4/15/2015    BETA         2.46E-02     1.62E-03    1.0lE-03 AP         ONS-5     371275009 4/15/2015 '  BETA         1.96E-02     1.45E-03    1.02E-03 AP         ONS-6     371275010 4/15/2015    BETA         2.63E-02     1.69E-03    1.03E-03 AP         NBF       371765001 4/22/2015    BETA         2.06E-02     l.52E-03    l.14E-03 AP         SBN       371765002 4/22/2015    BETA         l.85E-02     1.45E-03    l.16E-03 AP         DOW       371765003 4/22/2015    BETA         1.91E-02     1.47E-03    1.16E-03 AP         COL       371765004 4/22/2015    BETA         1.73E-02     l.36E-03    1.0SE-03 AP         ONS-1     371765005 4/22/2015    BETA         2.02E-02     l.54E-03    l.19E-03 AP         ONS-2     371765006 4/22/2015    BETA         l.97E-02     1.48E-03    l.13E-03 AP         ONS-3     371765007 4/22/2015    BETA         2.00E-02     l.47E-03    l.lOE-03 AP         ONS-4     371765008 4/22/2015    BETA         l.78E-02     l.39E-03    1.1 lE-03 AP         ONS-5     371765009 4/22/2015    BETA         l.93E-02     1.47E-03    1.15E-03 AP         ONS-6     371765010 4/22/2015    BETA         1.92E-02     1.47E-03    1.14E-03 AP         NBF       372180001 4/29/2015    BETA         2.06E-02     1.48E-03    9.74E-04
 *AP         SBN       372180002 4/29/2015    BETA         l.69E-02
* l.35E-03    9.79E-04 AP         DOW       372180003 4/29/2015    BETA         1.59E-02     1.31E-03    9.87E-04 AP         COL       372180004 4/29/2015    BETA         1.60E-02     l.32E-03    9.94E-04 AP         ONS-1     372180005 4/29/2015    BETA         1.88E-02     l.43E-03    9.96E-04 AP         ONS-2     372180006 4/29/2015    BETA         1.77E-02     l.38E-03    9.72E-04 AP         ONS-3     372180007 4/29/2015    BETA         1.66E-02     l.31E-03    9.48E-04 AP         ONS-4     372180008 4/29/2015    BETA         1.56E-02     1.28E-03    9.51E-04 AP         ONS-5     372180009 4/29/2015    BETA         1.84E-02     1.41E-03'   9.78E-04 AP         ONS-6     372180010 4/29/2015    BETA         1.75E-02     l.37E-03    9.77E-04 AP         NBF       372743001  51612015    BETA         2.14E-02     1.53E-03    1.05E-03 AP         SBN       372743002  51612015    BETA         2.44E-02     1.63E-03    1.04E-03 AP         DOW       372743003  5/6/2015    BETA         2.06E-02     l.46E-03    9.87E-04 AP         COL       372743004  5/6/2015    BETA         1.92E-02     1.39E-03    9.53E-04 AP         ONS-l     372743005  5/6/2015    BETA         2.13E-02     1.48E-03    9.78E-04 AP         ONS-2     372743006  5/6/2015    BETA         2.lOE-02     l.48E-03    9.92E-04 AP         ONS-3     372743007  5/6/2015    BETA         1.91E-02     1.40E-03    9.78E-04 AP         ONS-4     372743008  51612015    BETA         1.71E-02     1.36E-03    1.02E-03 AP         ONS-5     372743009  5/6/2015    BETA         2.22E-02     l.50E-03    9.70E-04 AP         O!'JS-6   372743010  5/6/2015     BETA        2.16E-02     1.49E-03    9.83E-04 D-10

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        NBF        373202001 5/13/2015     BETA        1.83&#xa3;-02     l.37E-03    9.00E-04 AP         SBN       373202002 5/13/2015     BETA        2.0lE-02     1.44&#xa3;-03    9.05&#xa3;-04 AP         DOW       373202003 5/13/2015     BETA        2.0lE-02     1.43E-03    9.0lE-04 AP         COL       373202004 5/13/2015     BETA        1.86E-02     1.37&#xa3;-03    8.84&#xa3;-04 AP         ONS-1     373202005 5/13/2015     BETA        l.50E-02     1.24&#xa3;-03    8.95E-04 AP         ONS-2     373202006 5/13/2015     BETA        1.55E-02     l.25E-03    8.85E-04 AP         ONS-3     373202007 5/13/2015     BETA        l.68E-02     1.32E-03    9.03E-04 AP         ONS-4     373202008 5/13/2015     BETA        l.75E-02     1.35E-03    9.llE-04 AP         ONS-5     373202009 5/13/2015     BETA        l.78E-02     l.33E-03    8.72E-04 AP         ONS-6     373202010 5/13/2015     BETA        l.60E-02     l.29E-03    9.lOE-04 AP        NBF        373655001 5/20/2015     BETA        1.75E-02     l.36E-03    l.03E-03 AP         SBN       373655002 5/20/2015     BETA        1.40E-02     1.23E-03    1.06E-03 AP         DOW       373655003 5/20/2015     BETA        1.73&#xa3;-02     l.36E-03    l.05E-03 AP         COL       373655004 5/20/2015     BETA        l.91E-02     l.39E-03    9.99E-04 AP         ONS-1     373655005 5/20/2015     BETA        1.52&#xa3;-02     l.27E-03    1.03E-03 AP         ONS-2     373655006 5/20/2015     BETA        l.93E-02     1.42E-03    1.02E-03 AP         ONS-3     373655007 5/20/2015     BETA        1.83&#xa3;-02     l.40E-03    1.05&#xa3;-03 AP         ONS-4     373655008 5/20/2015     BETA        1.79&#xa3;-02     l.36E-03    1.02E-03 AP         ONS-5     373655009 5/20/2015     BETA        2.35&#xa3;-02     1.57E-03    l.05E-03 AP         ONS-6     373655010 5/20/2015     BETA        1.87&#xa3;-02     l.39E-03    1.03&#xa3;-03 AP        NBF        383110001 7/1/2015      Ac-228     -2.42&#xa3;-04    3.99&#xa3;-04     1.26E-03 u AP        NBF        383110001 7/1/2015    Ag-108m      -1.39&#xa3;-04    8.25&#xa3;-05     2.15E-04 u AP         NBF       383110001 7/1/2015    Ag-llOm      -9.47&#xa3;-05     1.60&#xa3;-04    4.86E-04 u AP        NBF        383110001 7/1/2015      Ba-140     -2.73E+OO    l.25E+OO     O.OOE+OO u AP        NBF        383110001 7/1/2015       Be-7       l.21E-01     1.23&#xa3;-02    l.71E-02 AP        NBF        383110001 7/1/2015      Ce-141      4.98&#xa3;-04    2.13E-03     7.22&#xa3;-03 u AP        NBF        383110001 7/1/2015      Ce-144      3.30E-04    5.40E-04     l.85E-03 u AP        NBF        383110001 7/1/2015      Co-57       7.55&#xa3;-05    7.49E-05     2.45E-04 u AP        NBF        383110001 7/1/2015      Co-58      -4.05&#xa3;-04    3.89E-04     1.12&#xa3;-03 u AP        NBF        383110001 7/1/2015      Co-60      -5.42&#xa3;-06     1.13&#xa3;-04    3.77E-04 u AP         NBF       383110001 7/1/2015       Cr-51      1.87&#xa3;-02    2.55&#xa3;-02     8.55E-02 u AP        NBF      ' 383110001 7/1/2015      Cs-134     -1.22&#xa3;-04     1.29&#xa3;-04    3.79E-04 u AP         NBF       383110001 7/1/2015      Cs-137      7.21E-05    9.78E-05     3.38E-04 u AP         NBF       383110001 7/1/2015       Fe-59     -l.58E-03    2.08E-03     6.13&#xa3;-03 u AP         NBF       383110001  7/1/2015      I-131     -2.87E+Ol    3.05E+Ol     O.OOE+OO u AP        NBF        383110001 7/1/2015       K-40       6.02&#xa3;-03     1.73&#xa3;-03    4.16E-03 AP        NBF        383110001 7/1/2015      La-140      1.43&#xa3;-01    3.70&#xa3;-01     O.OOE+OO UI AP         NBF       383110001 7/1/2015      Mn-54       1.53&#xa3;-04     1.55&#xa3;-04    5.32E-04 u AP        NBF        383110001 7/1/2015      Nb-95       3.24&#xa3;-04    4.79&#xa3;-04     1.65E-03 u AP         NBF       383110001 7/1/2015      Ru-103      l.41E-05     l.05E-03    3.37&#xa3;-03 u AP         NBF       383110001 7/1/2015      Ru-106      3.16&#xa3;-04     l.06E-03    3.61E-03 u AP         NBF       383110001  7/1/2015     Sb-124     -2.89&#xa3;-04     l.36E-03    4.37&#xa3;-03 u AP         NBF       383110001  7/1/2015     Sb-125     -4.28&#xa3;-04    2.77&#xa3;-04     7.34E-04 u AP         NBF       383110001  711/2015      Se-75     -1.87&#xa3;-04    2.25E-04     7.0lE-04 u AP         NBF       383110001  7/1/2015     Th-228      1.26&#xa3;-04     1.89&#xa3;-04    5.05E-04 u AP         NBF       383110001  7/1/2015     Zn-65       5.42&#xa3;-05    2.46&#xa3;-04     7.20E-04 u AP         NBF       383110001 7/1/2015       Zr-95'     l.77E~03    8.97&#xa3;-04     3.06&#xa3;-03 u AP         SBN       383110002 7/1/2015      Ac-228      8.46&#xa3;-05    3.16E-04     1.56&#xa3;-03 u AP         SBN       383110002 7/1/2015     Ag-108m      2.02&#xa3;-05    7.53E-05     2.56E-04 u AP         SBN       383110002  7/1/2015   Ag-llOm      -2.06&#xa3;-05    2.08E-04     6.86E-04 u D-11

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 20*15 SAMPLE                              END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN       DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         SBN       383110002   7/112015    Ba-140       -9.26E-01   l.llE+OO     O.OOE+OO u AP         SBN       383110002   7/112015     Be-7         l.19E-01    1.30E-02    1.59E-02 AP         SBN       383110002   7/112015    Ce-141        l.61E-04   2.66E-03     8.38E-03 u AP         SBN       383110002   7/112015    Ce-144       -1.00E-03   6.27E-04     l.84E-03 u AP         SBN       383110002   7/1/2015    Co-57        -1.75E-04   8.66E-05     2.29E-04 u AP         SBN       383110002   711/2015     Co-58       -1.91E-04   4.08E-04     1.31E-03 u AP         SJ3N      383110002   711/2015    Co-60        -8.17E-05    1.35E-04    4.20E-04 u AP         SBN       ~83110002   711/2015     Cr-51       -1.28E-02   3.25E-02     8.85E-02 u AP         SBN       383110002   711/2015    Cs-134
* 2.06E-04     1.27E-04    4.45E-04 u AP         SBN       383110002   7/1/2015    Cs-137        3.23E-05   9.53E-05     2.79E-04 u AP         SBN       383110002   7/112015     Fe-59       -1.48E-03    1.97E-03    4.66E-03 u AP         SBN       383110002   7/112015     I-131       4.60E+Ol    3.63E+Ol     O.OOE+OO UI AP         SBN       383110002   7/112015     K-40         1.39E-03    1.06E-03    2.94E-03 u AP         SBN       383110002   7/1/2015    La-140        2.02E-02   4.31E-01     O.OOE+OO UI AP         SBN       383110002   711/2015    Mn-54        -4.29E-05    1.37E-04    4.46E-04 u AP         SBN       383110002   711/2015    Nb-95        -6.85E-04   4.60E-04     1.16E-03 u AP         SBN       383110002   711/2015    Ru-103       -1.54E-03    1.06E-03    2.91E-03 u AP         SBN       383110002   7/1/2015    Ru-106       -2.03E-03    l.23E-03    2.89E-03 u AP         SBN       383.110002  7/112015    Sb-124       -1.21E-03    1.45E-03    4.14E-03 u AP         SBN       383110002   7/112015    Sb-125       -1.09E-04   2.50E-04     8.13E-04 u AP         SBN       383110002   7/112015     Se-75       -6.30E-04   3.03E-04     6.79E-04 u AP         SBN       383110002   7/1/2015    Th-228        4.30E-04   3.28E-04     5.85E-04 u AP         SBN       383110002   7/1/2015    Zn-65        -3.13E-04   3.79E-04     1.12E-03 u AP         SBN       383110002   7/1/2015     Zr-95       5.59E-04    8.38E-04     2.82E-03 u AP         DOW       383110003   7/112015    Ac-228        7.43E-04   3.95E-04     l.19E-03 u AP         DOW       383110003   7/112015   Ag-108m       -2.06E-05   6.00E-05     1.95E-04 u AP         DOW.      383110003   7/112015   Ag-llOm        2.76E-04    1.28E-04  , 4.60E-04 u AP         DOW       383110003   7/112015    Ba-140      -1.05E+OO    8.79E-01     O.OOE+OO u AP         DOW       383110003   711/2015     Be-7         l.12E-01    1.1 IE-02   l.12E-02 AP         DOW       383110003   7/1/2015    Ce-141       4.12E-03    3.40E-03     5.3 lE-03 u AP         DOW       383110003   711/2015    Ce-144       6.22E-05
* 4.23E-04     l.43E-03 u AP         DOW       383110003 - 7/112015    Co-57        -6.46E-05   5.80E-05     1.79,E-04 u AP         DOW       383110003   711/2015    Co-58         3.99E-04   3.29E-04     l.16E-03 u AP         DOW       383110003   7/112015    Co-60         3.25E-05   9.90E-05     3.42E-04 u
\   AP         DOW       383110003   7/1/2015     Cr-51        6.41E-03    1.90E-02    6.58E-02 u AP         DOW       383110003   7/1/2015    Cs-134        3.18E-04    1.39E-04    4.35E-04 u AP         DOW       383110003   7/112015    Cs-137      -7.87E-05     1.05E-04    2.64E-04 u AP         DOW       383110003   7/112015     Fe-59        2.49E-03    1.94E-03    6.74E-03 u AP         DOW       383110003   7/112015     I-131      -1.llE+Ol    2.50E+Ol     O.OOE+OO u AP         DOW       383110003   711/2015     K-40         4.13E-03    1.49E-03    3.12E-03 UI AP         DOW       383110003   7/1/2015    La-140       -3.41E-01   2.80E-01     O.OOE+OO u AP         DOW       383110003   7/1/2015    Mn-54         l.79E-05    1.09E-04    3.24E-04 u AP         DOW       383110003   7/1/2015    Nb-95         3.71E-04   3.75E-04     l.30E-03 u AP         DOW       383110003   7/112015    Ru-103        6.92E-04   9.51E-04     2.91E-03 u AP         DOW       383110003   7/112015    Ru-106        8.82E-05   9.82E-04     3.20E-03 u AP         DOW       383110003   711/2015    Sb-124        1.58E-03    1.03E-03    3.91E-03 u AP         DOW       383110003   7/1/2015    Sb-125      -7.79E-05    2.02E-04     6.53E-04 u AP         DOW       383110003   7/1/2015     Se-75        2.52E-05    1.98E-04    6.41E-04 u AP         DOW       383110003   7/112015    Th-228        2.12E-04    l.88E-04    4.31E-04 u AP         DOW       383110003   7/112015    Zn-65        -3.92E-04   2.97E-04     7.73E-04 u D-12

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION     . LSN      DATE       NUCLIDE        (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         DOW        383110003 7/1/2015      Zr-95       1.67E-04   6.18E-04     2.12E-03  u AP         COL        383110004 711/2015     Ac-228      6.13E-04    3.99E-04     1.48E-03  u AP         COL        383110004 711/2015    Ag-108m     -2.71E-06    6.59E-05     2.17E-04  u AP         COL        383110004 7/112015    Ag-llOm      4.12E-05     1.89E-04    6.45E-04  u AP         COL        383110004 7/112015     Ba-140     -1.22E+OO    r.01E+oo     O.OOE+OO  u AP         COL        383110004 7/112015      Be-7        l.03E-01    l.12E-02    l.62E-02 AP         COL        383110004 7/112015     Ce-141       l.73E-03   2.30E-03     7.52E-03  u AP         COL        383110004 7/1/2015     Ce-144      4.25E-04    5.96E-04     1.95E-03  u AP         COL        383110004 7/1/2015     Co-57       3.93E-05    7.62E-05     2.49E-04  u AP         COL        383110004 7/1/2015     Co-58        1.93E-04   4.32E-04     1.26E-03 u AP         COL        383110004 7/1/2015     Co-60       2.75E-06     l.OSE-04    3.56E-04  u AP         COL        383110004 7/1/2015      Cr-51       l.62E-03   2.58E-02     8.62E-02  u AP         COL        383110004 7/1/2015     Cs-134      2.85E-05     l.40E-04    3.76E-04  u AP         COL        383110004 7/112015     Cs-137     -7.64E-05     1.0IE-04    3.05E-04  u AP         COL        383110004 7/112015      Fe-59      2.47E-03     1.73E-03    6.20E-03  u AP         COL        383110004 7/1/2015      I-131      6.25E+OO    3.17E+Ol     O.OOE+OO UI AP         COL        383110004 7/1/2015      K-40      -8.SIE-04     l.44E-03    4.38E-03  u AP         COL        383110004 7/1/2015     La-140     -4.21E-01    4.26E-01     O.OOE+OO  u AP         COL        383110004 7/1/2015     Mn-54      -l.56E-04     l.32E-04    3.87E-04  u AP         COL        383110004 7/1/2015     Nb-95      -2.56E-04    5.33E-04     1.39E-03  u AP         COL        383110004 7/1/2015     Ru-103       l.47E-03    ld4E-03     3.18E-03  u AP         COL        383110004 7/112015     Ru-106      7.36E-04     1.02E-03    3.44E-03  u AP         COL        383110004 711/2015     Sb-124     *2.98E-04     1.22E-03    4.llE-03  u AP         COL        383110004 7/1/2015     Sb-125     -3.52E-04    2.30E-04     6.26E-04  u AP         COL        383110004 7/112015      Se-75      2.02E-04    2.13E-04     7.27E-04  u AP         COL        383110004 7/1/2015     Th-228      2.0SE-04     1.65E-04    4.24E-04  u AP         COL        383110004 7/112015     Zn-65       4.59E-06    3.31E-04     1.IOE-03  u AP         COL        383110004 7/1/2015      Zr-95     -6.75E-04    8.04E-04     2.36E-03  u AP         ONS-1      383110005 7/1/2015     Ac-228       l.33E-03   5.99E-04     1.37E-03  u AP         ONS-1      383110005 7/1/2015    Ag-108m     -1.39E-05    5.99E-05     1.94E.:04 u AP         ONS-1      383110005 7/1/2015    Ag-llOm      3.64E-04     l.93E-04    5.85E-04  u AP         ONS-1    . 383110005 711/2015     Ba-140     -l.07E+OO    9.95E-Ol     O.OOE+OO  u AP         ONS-1      383110005 7/1/2015      Be-7        l.l IE-01  9.75E-03     l.33E-02 AP         ONS-1      383110005 7/1/2015     Ce-141      2.30E-04    2.27E-03     6.45E-03  u AP         ONS-1      383110005 7/1/2015     Ce-144      -2.59E-04   5.0IE-04     l.56E-03  u AP         ONS-1      383110005 7/1/2015 '   Co-57      -5.87E-05    6.57E-05     2.00E-04  u AP         ONS-1      383110005 7/1/2015     Co-58      -3.53E-04    3.59E-04     l.06E-03  u AP         ONS-1      383110005 7/1/2015     Co-60      -7.04E-05    9.98E-05     3.07E-04 u AP         ONS-1      383110005 7/1/2015      Cr-51       l.51E-02   2.48E-02     8.04E-02  u AP         ONS-1      383110005 7/112015     Cs-134     -l.39E-04     l.13E-04    3.22E-04  u AP         ONS-1      383110005 7/1/2015     Cs-137       l.IIE-04   9.75E-05     3.0IE-04  u AP         ONS-1      383110005 7/1/2015      Fe-59       l.43E-03    l.94E-03    4.92E-03  u AP         ONS-1      383110005 7/1/2015      I-131     -2.37E+OO    2.56E+Ol     O.OOE+OO  u AP         ONS-1      383110005 7/1/2015      K-40        l.OSE-03    l.40E-03    3.05E-03  u AP         ONS-1      383110005 7/1/2015     La-140       l.58E-01    3. llE-01   0.00E+OO UI AP         ONS-1      383110005 7/1/2015     Mn-54       -3.25E-05    1.19E-04    3.94E-04 U AP         ONS-1      383110005 7/1/2015     Nb-95       4.97E-04    4.29E-04     l.27E-03  u AP         ONS-1      383110005 711/2015     Ru-103     -9.27E-04     l.13E-03    2.9IE-03  u AP         ONS-1      383110005 7/112015     Ru-106       l.09E-03   9.99E-04     3.37E-03  u AP         ONS-1      383110005 7/1/2015     Sb-124      -1.34E-03    l.09E-03    3.00E-03  u D-13

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION*      LSN       DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        ONS-1      383110005   7/1/2015    Sb-125      -4.80E-05    2.lOE-04     6.82E-04 u AP        ONS-1      383110005   7/1/2015     Se-75      -l.45E-04    2.llE-04     6.59E-04 u AP        ONS-1      383110005   7/112015    Th-228       4.26E-04     l.63E-04    3.64E-04 AP        ONS-1      383110005   7/112015     Zn-65      -3.58E-04    3.55E-04     l.05E-03 u AP        ONS-1      383110005   7/1/2015     Zr-95       l.75E-03    7.71E-04     2.45E-03 u AP        ONS-2      383110006   7/1/2015    Ac-228       3.43E-04    3.83E-04     l.20E-03 u AP        ONS-2      383110006   7/1/2015   Ag-108m       l.41E-05    5.21E-05     l.70E-04 u AP.       ONS-2      383110006   7/1/2015   Ag-llOm       l.98E-05     l.45E-04    4.79E-04 u AP        ONS-2      383110006   7/1/2015    Ba-140      -l.34E-02    6.l lE-01    O.OOE+OO u AP        ONS-2      383110006   7/1/2015     Be-7        l.19E-Ol     l.07E-02    l.06E-02 AP        ONS-2      383110006   7/112015    Ce-141      -2.52E-03     l.99E-03    5.81E-03 u AP        ONS-2      383110006   7/1/2015    ce-144      -5.29E-04    4.32E-04     l.32E-03 u AP        ONS-2      383110006   7/1/2015    Co-57        2.56E-05    5.15E-05     l.76E-04 u AP        ONS-2      383110006   7/112015    Co-58       -l.03E-04    3.05E-04     9.34E-04 u AP        ONS-2      383110006   7/1/2015    Co-60        9.20E-05    8.59E-05     3.09E-04 u AP        ONS-2      383110006   7/1/2015     Cr-51       l.75E-02    2.07E-02     6.88E-02 u AP        ONS-2      383110006   7/1/2015    Cs-134      -8.45E-05    9.44E-,05    2.27E-04 u AP        ONS-2      383110006   7/1/2015    Cs-137       9.14E-05    8.IOE-05     2.73E-04 u AP        ONS-2      383110006   7/1/2015     Fe-59      -2.79E-04     l.26E-03    4.12E-03 u AP        ONS-2      38311000.6  7/1/2015     I-131      -1.IOE+Ol    2.36E+Ol     O.OOE+OO u AP        ONS-2      383110006   7/1/2015     K-40        3.16E-03     l.35E-03    l.96E-03 UI AP        ONS-2      383110006   7/1/2015    La-140       4.15E-02    2.75E-Ol     O.OOE+OO UI AP        ONS-2      383110006   7/1/2015    Mn-54       -l.77E-05    7.82E-05     2.49E-04 U AP        ONS-2      383110006   7/1/2015    Nb-95        5.40E-06    3.28E-04     l.08E-03 u AP        ONS-2      383110006   7/1/2015    Ru-103       l.87E-06    7.61E-04     2.56E-03 u AP        ONS-2      383110006  '7/1/2015    Ru-106      -3.34E-04    8.40E-04     2.71E-03 u AP        ONS-2      383110006   7/1/2015    Sb-124       l.22E-06    9.33E-04     3.05E-03 u AP        ONS-2      383110006   7/1/2015    Sb-125       2.23E-04     l.85E-04    6.15E-04 U AP        ONS-2      383110006   7/1/2015     Se-75       l.98E-06     l.61E-04    5.30E-04 U AP        ONS-2      383110006   7/1/2015    Th-228       l.29E-05     l.23E-04    3.60E-04 U AP        ONS-2      383110006   7/1/2015    Zn-65        5.80E-04    2.70E-04     9.06E-04 U AP        ONS-2      383110006   7/1/2015     Zr-95       3.70E-04    5.82E-04     l.99E-03 u AP        ONS-3      383110007   7/1/2015    Ac-228       l.02E-03    6.llE-04     l.24E-03 u AP        ONS-3      383110007   7/1/2015   Ag-108m       4.89E-05    6.77E-05     l.99E-04 u AP        ONS-3      383110007   7/1/2015   Ag-lJOm      -2.15E-05     1.54E-04    4.96E-04 u AP        ONS-3      383110007   7/1/2015    Ba-140       5.54E-03    8.92E-Ol     O.OOE+OO UI AP        ONS-3      383110007   7/1/2015     Be-7        l.18E-Ol     l.03E-02    l.23E-02 AP        ONS-3      383110007   7/1/2015    Ce-141       3.47E-03    2.43E-03     6.93E-03 u AP        ONS-3      383110007   7/1/2015    Ce-144      -2.44E-04    5.26E-04     l.67E-03 u AP        ONS-3      383110007   7/1/2015    Co-57       -2.97E-05    6.55E-05     2.09E-04 u AP        ONS-3      383110007   7/1/2015    Co-58        3.22E-04    3.66E-04     l.08E-03 u AP        ONS-3      383110007   7/1/2015    Co-60        9.00E-05     l.15E-04    3.47E-04 u AP        ONS-3      383110007   7/1/2015     Cr-51       5.63E-03    2.33E-02     7.60E-02 u AP        ONS-3      383110007   7/1/2015    Cs-134      -l.24E-05     l.19E-04    3.29E-04 u AP        ONS-3      383110007   7/1/2015    Cs-137      -9.74E-05    8.76E-05     2.65E-04 u AP        ONS-3      383110007   7/1/2015     Fe-59      -3.03E-04    2.04E-03     5.05E-03 u AP        ONS-3      383110007   7/1/2015     I-131      -3.14E+Ol    2.71E+Ol     O.OOE+OO u AP        ONS-3      383110007   7/1/2015     K-40        4.21E-03     l.69E-03    4.77E-03 u AP        ONS-3      383110007   7/1/2015    La-140      -5.12E-02    2.92E-Ol     O.OOE+OO u AP        ONS-3      383110007   7/1/2015    Mn-54       -l.25E-04     l.17E-04    3.47E-04 u D-14

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-3     383110007 7/112015     Nb-95       3.0IE-04    4.58E-04     l.33E-03 u AP         ONS-3     383110007 7/1/2015    Ru-103       1.60E-03     1.05E-03    3.44E-03 u AP         ONS-3     383110007 7/112015    Ru-106       4.15E-Of    9.03E-04     3.07E-03 u AP         ONS-3     383110007 7/112015     Sb-124     -3.27E-04     l.14E-03    3.63E-03 u AP         ONS-3     383110007 7/112015     Sb-125      2.66E-04    2.13E-04     7.1 IE-04 u AP         ONS-3     383110007 7/112015      Se-75       1.56E-06   2.17E-04     7.llE-04 u AP         ONS-3     383110007 7/1/2015    Th-228       2.51E-04     1.74E-04    4.93E-04 u AP         ONS-3     383110007 7/1/2015      Zn-65     -4.91E-04    3.00E-04     8.0IE-04 u AP         ONS-3     383110007 7/1/2015      Zr-95      4.87E-04    6.73E-04     2.27E-03 u AP         ONS-4     383110008 7/1/2015     Ac-228     -1.08E-03    5.14E-04     9.15E-04 u AP         ONS-4     383110008 7/112015   Ag-108m      -8.72E-05    6.61E-05     l.93E-04 u AP         ONS-4     383110008 7/112015   Ag-llOm      -l.23E-04     l.91E-04    5.90E-04 u AP         ONS-4     383110008 7/112015    Ba-140       l.19E+OO    9.31E-01     O.OOE+OO UI AP         ONS-4     383110008 7/112015      Be-7       1.06E-01     1.05E-02    l.37E-02 AP         ONS-4     383110008 7/1/2015     Ce-141      2.44E-03    2.02E-03     4.46E-03 u AP         ONS-4     383110008 7/1/2015     Ce-144     -2.17E-04    4.12E-04     l.36E-03 u AP         ONS-4     383110008 7/112015      Co-57     -3.41E-05    5.61E-05     l.71E-04 u AP         ONS-4     383110008 7/112015      Co-58      4.96E-04    3.83E-04     l.32E-03 u AP         ONS-4     383110008 7/112015      Co-60     -9.lOE-05    9.66E-05     2.74E-04 u AP         ONS-4     383110008 7/1/2015      Cr-51     -3.51E-02    2.42E-02     6.71E-02 u AP         ONS-4     383110008 7/1/2015     Cs-134      1.76E-04     1.08E-04    3.75E-04 u AP         ONS-4     383110008 7/1/2015     Cs-137     -5.28E-05    9.16E-05     2.80E-04 u AP         ONS-4     383110008 7/1/2015      Fe-59     -1.22E-04     l.56E-03    5.00E-03 u AP        ONS-4      383110008 7/1/2015      1-131     6.14E+OO     2.69E+Ol     O.OOE+OO UI AP        ONS-4      383110008 7/1/2015      K-40       l.19E-03    1.44E-03     5.1 IE-03 u AP        ONS-4      383110008 7/112015     La-140     -1.66E-01    3.27E-01     O.OOE+OO u AP         ONS-4     383110008 7/1/2015     Mn-54      -8.83E-05     1.28E~04    3.96E-04 u AP         ONS-4     383110008 7/1/2015     Nb-95       5.48E-04    4.96E-04     l.37E-03 u AP         ONS-4     383110008 7/112015    Ru-103      -4.38E-04     1.08E-03    2.94E-03 u AP        ONS-4      383110008 7/112015    Ru-106      -1.06E-03    1.0IE-03     2.92E-03 u AP        ONS-4      383110008 7/112015     Sb-124      4.38E-04     l.17E-03    4.07E-03 u AP        ONS-4      383110008 7/1/2015     Sb-125      1.56E-04    2.14E-04     7.29E-04 u AP        ONS-4      383110008 711/2015      Se-75     -2.03E-05     l.96E-04    6.l IE-04 u AP         ONS-4     383110008 7/1/2015    Th-228       2.51E-04     l.97E-04    3.97E-04 u AP         ONS-4     383110008 7/1/2015      Zn-65     -3.26E-04    3.43E-04     9.84E-04 u AP        ONS-4      383110008 7/112015      Zr-95      1.53E-04    7.llE-04     2.09E-03 u AP        ONS-5      383110009 7/1/2015    Ac-228      -1.01E"04    3.89E-04     1.27E-03 u AP        ONS-5      383110009 7/1/2015   Ag-108m      -4.82E-05    6.36E-05   . l.90E-04 u AP        ONS-5      383110009 7/112015   Ag-llOm      -2.31E-04     l.98E-04    5.52E-04 u AP         ONS-5     383110009 7/1/2015    Ba-140       3.27E-01    8.72E-01     O.OOE+OO UI AP        ONS-5      383110009 7/1/2015      Be-7       1.14E-01     l.16E-02    1.51E-02 AP        ONS-5      383110009 7/112015    Ce-141       4.66E-04    2.22E-03     7.26E-03 u AP        ONS-5      383110009 7/112015    Ce-144      -1.64E-05    4.74E-04     l.61E-03 u AP        ONS-5      383110009 7/1/2015      Co-57     -3.91E-05    6.51E-05     l.99E-04 u AP        ONS-5      383110009 7/1/2015      Co-58     -1.l IE-04   3.63E-04     1.15E-03 u AP         ONS-5     383110009 7/1/2015      Co-60     -l.58E-05    9.54E-05     3.07E-04 u AP        ONS-5      383110009 7/1/2015      Cr-51      3.79E-02    2.36E-02     7.99E-02 u AP        ONS-5      383110009 7/1/2015     Cs-134     -1.40E-04    1.07E-04     2.89E-04 u AP        ONS-5      383110009 7/112015     CS-137      6.26E-05    1.22E-04     2.56E-04 u AP        ONS-5      383110009 7/1/2015
* Fe-59      9.67E-04    1.26E-03     4.49E-03 u D-15

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-5     383110009  7/112015     I-131      7.05E+OO     2.83E+OI     O.OOE+OO UI AP         ONS-5     383110009  7/112015     K-40        2.90E-03     l.23E-03    3.27E-03 u AP         ONS-5     383110009  7/1/2015    La-140       6.05E-OI    3.44E-OI     O.OOE+OO UI AP         ONS-5     383110009  7/112015    Mn-54       -l.02E-04     1.24E-04    3.68E-04 u AP         ONS-5     383110009  7/112015    Nb-95        5.15E-04    4.22E-04     1.44E-03 u AP         ONS-5     383110009  7/1/2015    Ru-103       8.39E-04     l.02E-03    3.50E-03 u AP         ONS-5     383110009  7/1/2015    Ru-106      -5.47E-04     l.04E-03    3.30E-03 u AP         ONS-5     383110009  7/1/2015    Sb-124       l.66E-04     1.13E-03    3.84E-03 u AP         ONS-5     383110009  7/1/2015    Sb-125       1.57E-05    2.38E-04     7.65E-04 u AP         ONS-5     383110009  7/112015     Se-75      -4.12E-05    2.25E-04     6.43E-04 u AP         ONS-5     383110009  7/112015    Th-228       3.06E-04    2.0SE-04     4.89E-04 u AP         ONS-5     383110009  7/1/2015    Zn-65        3.20E-04    2.39E-04     8.05E-04 u AP         ONS-5     383110009 7/1/2015      Zr-95      -7.93E-04    6.76E-04     l.89E-03 u AP         ONS-6     383110010 7/1/2015     Ac-228      -1.55E-04    3.38E-04     1.12E-03 u AP         ONS-6     383110010 7/1/2015    Ag-108m      -3.75E-06    6.40E-05     2.llE-04 u AP         ONS-6     383110010 7/1/2015    Ag-1 lOm     -2.19E-04    1.75E-04     5.00E-04 u AP         ONS-6     383110010 7/1/2015     Ba-140       9.62E-OI    8.91E-OI     O.OOE+OO UI AP         ONS-6     383110010 7/1/2015      Be-7        1.IOE-01     1.12E-02    l.46E-02 AP         ONS-6     383110010 7/1/2015     Ce-141       2.IOE-03    2.37E-03     7.0IE-03 u AP         ONS-6     383110010 7/1/2015     Ce-144      -3.04E-04    4.73E-04     l.48E-03 u AP         ONS-6     383110010 711/2015     Co-57       -7.79E-05    6.59E-05     l.96E-04 u AP         ONS-6     383110010  7/1/2015    Co-58       -4.05E-04    3.63E-04     l.09E-03 u AP         ONS-6     383110010  7/1/2015    Co-60       -l.OIE-04    9.56E-05     2.61E-04 u AP         ONS-6     383110010 7/1/2015      Cr-51       l.OOE-02    2.38E-02     8.0SE-02 u AP         ONS-6     383110010 7/1/2015     Cs-134       2.84E-04    2.35E-04     3.03E-04 u AP         ONS-6     383110010 7/1/2015     Cs-137      -4.04E-05    6.99E-05     2.12E-04 u AP         ONS-6     383110010 7/1/2015      Fe-59       8.63E-05     l.OSE-03    3.61E-03 u AP         ONS-6     383110010 7/1/2015      I-131      6.20E+OI     3.08E+OI     O.OOE+OO UI AP         ONS-6     383110010 7/1/2015      K-40        l.46E-03     l.63E-03    2.73E-03 u AP         ONS-6     383110010 7/112015     La-140      -7.86E-OI    3.43E-OI     O.OOE+OO u AP         ONS-6     383110010 7/1/2015     Mn-54       -3.67E-05    9.26E-05     2.99E-04 u AP         ONS-6     383110010 7/1/2015     Nb-95        5.44E-04    6.09E-04     l.ISE-03 u AP         ONS-6     383110010 7/1/2015     Ru-103      -7.27E-04    9.28E-04     2.84E-03 u AP         ONS-6     383110010 7/1/2015     Ru-106       8.95E-04    9.65E-04     3.23E-03 u AP         ONS-6     383110010 7/1/2015     Sb-124       4.70E-04    9.76E-04     3.44E-03 u AP         ONS-6     383110010 7/1/2015     Sb-125       6.86E-05    2.02E-04     6.79E-04 u AP         ONS-6     383110010 7/1/2015      Se-75       l.77E-04    2.04E-04     6.99E-04 u AP         ONS-6     383110010 7/1/2015     Th-228       3.02E-04    1.86E-04     4.92E-04 u AP         ONS-6     383110010 7/1/2015     Zn-65       -2.17E-04    2.68E-04     7.99E-04 u AP         ONS-6     383110010 7/1/2015      Zr-95      -3.64E-04    7.14E-04     2.04E-03 u AP        NBF        374058001 5/27/2015    BETA         2.47E-02     l.62E-03    9.78E-04 AP         SBN       374058002 5/27/2015    BETA         2.48E-02     l.62E-03    9.83E-04 AP        DOW        374058003 5/27/2015    BETA         2.26E-02     l.54E-03    9.76E-04 AP         COL       374058004 5/27/2015    BETA         2.52E-02     l.61E-03    9.58E-04 AP         ONS-1     374058005 5/27/2015    BETA         2.34E-02     l.55E-03    9.48E-04 AP         ONS-2     374058006 5/27/2015    BETA         2.83E-02     1.73E-03    9.78E-04 AP         ONS-3     374058007 5/27/2015    BETA         2.51E-02     l.62E-03    9.65E-04 AP         ONS-4     374058008 5/27/2015    BETA         2.64E-02     1.66E-03    9.65E-04 AP         ONS-5     374058009 5/27/2015    BETA         3.06E-02     l.79E-03    9.72E-04 AP         ONS-6     374058010 5/27/2015    BETA         2.58E-02     L63E-03     9.57E-04 D-16

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        NBF        374491001 61312015     BETA         1.88&#xa3;-02     1.40&#xa3;-03    1.02&#xa3;-03 AP         SBN       374491002 6/3/2015     BETA         1.70&#xa3;-02     l.32E-03    9.97&#xa3;-04 AP         DOW       374491003 6/3/2015     BETA         l.71E-02     1.34&#xa3;-03    1.03&#xa3;-03 AP         COL       374491004 6/3/2015     BETA         1.49&#xa3;-02     1.25&#xa3;-03    1.02&#xa3;-03 AP         ONS-1     374491005 6/3/2015     BETA         1.67&#xa3;-02     1.30&#xa3;-03    9.90&#xa3;-04 AP         ONS-2     374491006 6/3/2015     BETA         1.49&#xa3;-02     1.22&#xa3;-03    9.69&#xa3;-04 AP         ONS-3     374491007 6/3/2015     BETA         1.62&#xa3;-02     1.29&#xa3;-03    l.OOE-03 AP         ONS-4     374491008 6/3/2015     BETA         1.78&#xa3;-02     1.37&#xa3;-03    1.03&#xa3;-03 AP         ONS-5     374491009 6/3/2015     BETA         1.72&#xa3;-02     1.33&#xa3;-03    l.OIE-03 AP         ONS-6     374491010 6/3/2015     BETA         1.72&#xa3;-02     1.33&#xa3;-03    l.OIE-03 AP         NBF       374979001 6/10/2015    BETA         2.55&#xa3;-02     1.64&#xa3;-03    9.78&#xa3;-04 AP         SBN       374979002 6/10/2015    BETA         2.84&#xa3;-02     l.71E-03    l.OIE-03 AP         DOW       374979003 6/10/2015    BETA         2.98&#xa3;-02     l.77E-03    1.04&#xa3;-03 AP         COL       374979004 6/10/2015    BETA         2.31&#xa3;-02     l.5l'E-03   9.68&#xa3;-04 AP         ONS-1     374979005 6/10/2015    BETA         2.30&#xa3;-02     1.55&#xa3;-03    1.02&#xa3;-03 AP         ONS-2     374979006 6/10/2015    BETA         2.55&#xa3;-02     1.63&#xa3;-03    1.03&#xa3;-03 AP         ONS-3     314979007 6/10/2015    BETA         2.41E-02     1.56&#xa3;-03    9.89&#xa3;-04 AP         ONS-4     374979008 6/10/2015    BETA         2.87&#xa3;-02     1.74&#xa3;-03    1.04&#xa3;-03 AP         ONS-5     374979009 6/10/2015    BETA         2.72&#xa3;-02     l.67E-03    1.02&#xa3;-03 AP         ONS-6     374979010 6/10/2015    BETA         2.64&#xa3;-02     1.66&#xa3;-03    1.02&#xa3;-03 AP         NBF       375504001 6/17/2015    BETA         1.80&#xa3;-02     1.34&#xa3;-03    1.03&#xa3;-03 AP         SBN       375504002 6/17/2015    BETA         2.IOE-02     1.46&#xa3;-03    1.05&#xa3;-03 AP         DOW       375504003 6/17/2015    BETA         2.49&#xa3;-02     1.60&#xa3;-03    1.06&#xa3;-03 AP         COL       375504004 6/17/2015    BETA         2.07&#xa3;-02     1.46&#xa3;-03    1.06&#xa3;-03 AP         ONS-1     375504005 6/17/2015    BETA         l.65E-02     1.30&#xa3;-03    1.05&#xa3;-03 AP         ONS-2     375504006 6/17/2015    BETA         1.82&#xa3;-02     1.35&#xa3;-03    1.03&#xa3;-03 AP         ONS-3     375504007 6/i7/2015    BETA         l.65E-02     1.29&#xa3;-03    1.02&#xa3;-03 AP         ONS-4     375504008 6/17/2015    BETA         2.13E-02     l.51E-03    1.09&#xa3;-03 AP         ONS-5     375504009 6/17/2015    BETA         1.62&#xa3;-02     1.29&#xa3;-03    1.05&#xa3;-03 AP         ONS-6     375504010 6/17/2015    BETA         2.06&#xa3;-02     1.47&#xa3;-03    1.07&#xa3;-03 AP         NBF       375803001 6/24/2015    BETA         2.16&#xa3;-02     1.55&#xa3;-03    1.14&#xa3;-03 AP         SBN       375803002 6/24/2015    BETA         2.15Ec02     l.47E-03    1.03&#xa3;-03 AP         DOW -     375803003 6/24/2015    BETA         2.36&#xa3;-02     1.60&#xa3;-03    1.12&#xa3;-03 AP         COL       375803004 6/24/2015    BETA         2.25E-02     1.52&#xa3;-03    1.05&#xa3;-03 AP         ONS-1     375803005 6/24/2015    BETA         2.0IE-02     1.44&#xa3;-03    1.06&#xa3;-03 AP         ONS:2     375803006 6/24/2015    BETA         2.22&#xa3;-02     1.48&#xa3;-03    l.02E-03 AP         ONS-3     375803007 6/24/2015    BETA         2.42&#xa3;-02     1.63&#xa3;-03    1.12&#xa3;-03 AP         ONS-4     375803008 6/24/2015    BETA         2.25&#xa3;-02     1.56&#xa3;-03    l. llE-03 AP         ONS-5     375803009 6/24/2015    BETA         2.14&#xa3;-02     1.54&#xa3;-03    1.13&#xa3;-03 AP         ONS-6     375803010 6/24/2015    BETA         2.26&#xa3;-02     1.58&#xa3;-03    1.14&#xa3;-03 AP         NBF       376160001  7/112015    BETA         1.82&#xa3;-02     l.41E-03    1.02&#xa3;-03
 .AP         SBN       376160002  7/112015    BETA         1.98&#xa3;-02     1.43&#xa3;-03    9.63&#xa3;-04 AP         DOW       376160003  7/112015    BETA         1.66&#xa3;-02     1.31&#xa3;-03    9.71E-04 AP         COL       376160004  7/112015    BETA         1.92&#xa3;-02     1.40&#xa3;-03    9.58&#xa3;-04 AP         ONS-1     376160005  7/1/2015    BETA         2.58&#xa3;-02     1.60&#xa3;-03    9.38&#xa3;-04 AP         ONS-2     376160006  711/2015    BETA         2.63&#xa3;-02     1.63&#xa3;-03    9.48&#xa3;-04 AP         ONS-3     376160007  7/112015    BETA         2.47&#xa3;-02     l.61E-03    9.93&#xa3;-04 AP         ONS-4     376160008  7/1/2015    BETA         2.03&#xa3;-02     1.45&#xa3;-03    9.70&#xa3;-04 AP         ONS-5     376160009  7/1/2015    BETA         l.78E-02     1.37&#xa3;-03    9.84&#xa3;-04 AP         ONS-6     376160010  711/2015    BETA         2.19&#xa3;-02     1.49&#xa3;-03    9.56&#xa3;-04 D-17

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                      CONC      STD.DEV.       MDC     FLAGS TYPE      STATION       LSN        DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       376892001    7/8/2015    BETA         l.90E-02     l.45E-03    1.07E-03 AP         SBN       376892002    7/8/2015    BETA         2.32E-02     l.54E-03    9.93E-04 AP         DOW       376892003    7/8/2015    BETA         2.42E-02     l.62E-03    l.05E-03 AP         COL       376892004    7/8/2015    BETA         2.16E-02     1.54E-03    l.06E-03 AP         ONS-1     376892005    7/8/2015    BETA         1.94E-02     1.46E-03    l.06E-03 AP         ONS-2     376892006    7/8/2015    BETA         2.29E-02     1.53E-03    9.95E-04 AP         ONS-3     376892007    7/8/2015    BETA         2.28E-02     l.54E-03    1.0lE-03 AP         ONS-4     376892008    7/8/2015    BETA         2.16E-02     1.51E-03  . 1.02E-03 AP         ONS-5     376892009    7/8/2015    BETA         2.23E-02     1.47E-03    9.46E-04 AP         ONS-6     376892010    7/8/2015. BETA         2.56E-02     l.63E-03    1.0lE-03 AP         NBF       377426001   7/15/2015    BETA         2.06E-02     l.48E-03    9.40E-04 AP         SBN       377426002   7/15/2015    BETA         2.07E-02     1.46E-03    9.05E-04 AP         DOW       377426003   7/15/2015    BETA         l.79E-02     l.40E-03    9.63E-04 AP         COL       377426004   7/15/2015    BETA         2.18E-02     l.50E-03    9.09E-04 AP         ONS-1     377426005   7/15/2015    BETA         2.16E-02     l.49E-03    9.12E-04 AP         ONS-2     377426006   7115/2015    BETA         2.45E-02     l.59E-03    9.lOE-04 AP         ONS-3     377426007   7/15/2015    BETA         2.23E-02     l.51E-03    9.00E-04 AP         ONS-4     377426008   7/15/2015    BETA         l.99E-02     1.45E-03    9.29E-04 AP         ONS-5     377426009   7/16/2015    BETA         2.15E-02     1.78E-03    l.30E-03 AP         ONS-6     377426010   7/15/2015    BETA         2.13E-02     1.51E-03    9.49E-04 AP        NBF        377895001 . 7/22/2015    BETA         2.75E-02     1.71E-03    9.41E-04 AP         SBN       377895002   7/22/2015    BETA         2.60E-02     l.67E-03    9.48E-04 AP         DOW       377895003   7/22/2015    BETA         2.66E-02     1.65E-03    9.lOE-04 AP         COL       377895004   7/22/2015    BETA         2.35E-02     1.54E-03    9.0lE-04 AP         ONS-1     377895005   7/22/2015    BETA         2.65E-02     1.64E-03    9.05E-04 AP         ONS-2     377895006   7/22/2015    BETA         2.60E-02     1.62E-03    8.97E-04 AP         ONS-3     377895007   7/22/2015    BETA         2.62E-02     1.63E-03    8.97E-04 AP         ONS-4     377895008   7/22/2015    BETA         2.62E-02     l.66E-03    9.35E-04 AP         ONS-5     377895009   7/22/2015    BETA         2.84E-02     1.82E-03    1.03E-03 AP         ONS-6     377895010   7/22/2015    BETA         3.29E-02     l.84E-03    9.12E-04 AP        NBF        378372001   7/29/2015    BETA         4.07E-02    2.06E-03     9.21E-04 AP         SBN       378372002   7/29/2015    BETA         3.22E-02     l.85E-03    9.42E-04 AP        DOW        378372003   7/29/2015    BETA         3.75E-02     1.94E-03    8:90E-04 AP         COL       378372004   7/29/2015    BETA         3.30E-02     1.83E-03    9.02E-04 AP         ONS-1     378372005   7/29/2015    BETA         4.28E-02    2.09E-03     9.02E-04 AP        ONS-2      378372006   7/29/2015    BETA         4.0lE-02    2.0lE-03     8.89E-04 AP         ONS-3     378372007   7/29/2015    BETA         3.74E-02     1.95E-03    8.98E-04 AP         ONS-4     378372008   7/29/2015    BETA         3.74E-02     l.97E-03    9.20E-04 AP         ONS-5     378372009   7/29/2015    BETA         3.48E-02     l.87E-03    8.92E-04 AP         ONS-6     378372010   7/29/2015    BETA         3.34E-02     l.84E-03    8.98E-04 AP         NBF       378883001    8/5/2015    BETA         2.66E-02     1.71E-03    l.05E-03 AP         SBN       378883002    8/5/2015    BETA         2.95E-02     l.77E-03    l.OlE-03 AP        DOW        378883003    8/5/2015    BETA         2.56E-02     1.60E-03    9.57E-04 AP         COL       378883004    8/5/2015    BETA         2.65E-02     l.69E-03    1.03E-03 AP         ONS-1     378883005    8/5/2015    BETA         2.84E-02     l.72E-03    9.96E-04 AP         ONS-2     378883006    8/5/2015    BETA         3.41E-02     l.88E-03    9.90E-04 AP        ONS-3      378883007    8/5/2015    BETA         3.22E-02     l.81E-03    9.74E-04 AP        ONS-4      378883008    8/5/2015    BETA         2.83E-02     l.74E-03    l.02E-03 AP        ONS-5      378883009    8/5/2015    BETA         2.91E-02     l.70E-03    9.56E-04 AP         ONS-6     378883010    8/5/2015    BETA         2.76E-02    l.72E-03     1.03E-03 D-18

Donald C~ Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         NBF       379369001 8/12/2015    BETA        2.92E-02     l.77E-03    l.02E-03 AP         SBN       379369002 8/12/2015    BETA        3.14E-02     1.83E-03    l.02E-03 AP         DOW       379369003 8/12/2015    BETA        2.76E-02     l.66E-03    9.52E-04 AP         COL       379369004 8/12/2015    BETA        3.00E-02     l.78E-03    l.OlE-03 AP         ONS-1     379369005 8/12/2015    BETA        3.37E-02     l.86E-03    9.76E-04 AP         ONS-2     379369006 8/12/2015    BETA        3.15E-02     l.87E-03    l.06E-03 AP         ONS-3     379369007 8/12/2015    BETA        2.82E-02     l.70E-03    9.75E-04 AP         ONS-4     379369008 8/12/2015    BETA        2.83E-02     l.74E-03    l.02E-03 AP         ONS-5     379369009 8/12/2015    BETA        2.66E-02     l.66E-03    9.82E-04 AP         ONS-6     379369010 8/12/2015    BETA        2.94E-02     l.75E-03    9.92E-04 AP         NBF       379768001 8/19/2015    BETA        3.96E-02     2.05E-03    l.03E-03 AP         SBN       379768002 8/19/2015    BETA        4.0lE-02     2.07E-03    l.04E-03 AP         DOW       379768003 8/19/2015    BETA        4.02E-02     2.05E-03    l.OlE-03 AP         COL       379768004 8/19/2015    BETA        4.09E-02     2.09E-03    l.04E-03 AP         ONS-1     379768005 8/19/2015    BETA        3.68E-02     l.96E-03    l.OlE-03 AP         ONS-2     379768006 8/19/2015    BETA        3.92E-02     2.07E-03    l.06E-03 AP         ONS-3     379768007 8/19/2015    BETA        3.97E-02     2.02E-03    9.90E-04 AP         ONS*4     379768008 8/19/2015    BETA        4.19E-02     2.16E-03    1.07E-03 AP         ONS-5     379768009 8/19/2015    BETA        3.71E-02     1.96E-03    1.0lE-03 AP         ONS-6     379768010 8/19/2015    BETA        3.84E-02     2.0lE-03    1.02E-03 AP         NBF       384522001 9/30/2015   Ac-228       2.07E-04     4.92E-04    1.72E-03 u AP         NBF       384522001 9/30/2015  Ag-108m      -1.51E-05     8.65E-05    2.79E-04 u AP         NBF       384522001 9/30/2015  Ag-llOm      -8.06E-06     1.12E-04    3.65E-04 u AP         NBF       384522001 9/30/2015    Ba-140     -1.91E-02     4.77E-02    1.47E-01 u AP         NBF       384522001 9/30/2015     Be-7        1.50E-01    1.14E-02    7.50E-03 AP         NBF       384522001 9/30/2015    Ce-141      2.49E-04     8.59E-04    2.65E-03 u AP         NBF       384522001 9/30/2015    Ce-144      4.llE-04     5.71E-04    1.90E-03 u AP         NBF       384522001 9/30/2015    Co-57       2.14E-05     7.23E-05    2.38E-04 u AP         NBF       384522001 9/30/2015    Co-58      -2.72E-04     2.17E-04    5.54E-04 u AP         NBF       384522001 9/30/2015    Co-60      -1.86E-04     1.18E-04    1.94E-04 u AP         NBF       384522001 9/30/2015    Cr-51        1.05E-02    7.36E-03    2.54E-02 u AP         NBF       384522001 9/30/2015    Cs-134     -9.32E-05     1.67E-04    4.38E-04 u AP         NBF       384522001 9/30/2015    Cs-137     -3.88E-05     1.12E-04    3.63E-04 u AP         NBF       384522001 9/30/2015    Fe-59      -7.04E-04     7.73E-04    2.05E-03 u AP         NBF       384522001 9/30/2015     1-131      4.16E-01     1.68E-01    O.OOE+OO UI AP         NBF       384522001 9/30/2015     K-40      -2.09E-04     1.48E-03    5.05E-03 u AP         NBF       384522001 9/30/2015    La-140     -1.39E-02     l.86E-02    5.22E-02 u AP         NBF       384522001 9/30/2015    Mn-54       2.21E-04     l.65E-04    5.87E-04 u AP         NBF       384522001 9/30/2015    Nb-95      -2.66E-04     2.51E-04    7.0lE-04 u AP         NBF       384522001 9/30/2015    Ru-103       1.33E-03    5.56E-04    1.86E-03 u AP         NBF       384522001 9/30/2015    Ru-106       1.48E-03    l.27E-03    4.38E-03 u AP         NBF       384522001 9/30/2015    Sb-124       5.86E-04    5.94E-04    2.34E-03 u AP         NBF       384522001 9/30/2015    Sb-125       1.07E-04    3.05E-04    1.02E-03 u AP         NBF       384522001 9/30/2015     Se-75     -2.57E-04     1.79E-04. 5.06E-04 u AP         NBF       384522001 9/30/2015    Th-228      7.07E-05     2.35E-04    6.04E-04 u AP         NBF       384522001 9/30/2015    Zn-65      -1.70E-04     2.87E-04    8.33E-04 u AP         NBF       384522001 9/30/2015     Zr-95      2.40E-04     4.82E-04    1.69E-03 u AP         SBN       384522002 9/30/2015    Ac-228      -4.40E-04    9.24E-04    3.05E-03 u AP         SBN       384522002 9/30/2015   Ag-108m       l.06E-04  . 1.64E-04    4.97E-04 u AP         SBN       384522002 9/30/2015   Ag-llOm      2.79E-04     3.93E-04    1.36E-03 u D-19

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         SBN       384522002 9/30/2015   Ba-140       l.68E-01     1.0SE-01    3.SlE-01 u AP         SBN       384522002 9/30/2015    Be-7        l.31E-Ol     1.64E-02    1.63E-02 AP         SBN       384522002 9/30/2015   Ce-141      -1.26E-04     l.26E-03    3.98E-03 u AP         SBN       384522002 9/30/2015   Ce-144      -7.56E-05    9.98E-04     3.lSE-03 u AP         SBN       384522002 9/30/2015   Co-57       -2.98E-05     l.16E-04    3.65E-04 u AP         SBN       384522002 9/30/2015   Co-58       -5.06E-04    5.61E-04     1.59E-03 u AP         SBN       384522002 9/30/2015   Co-60       -3.00E-04    2.63E-04     6.59E-04 u AP         SBN       384522002 9/30/2015    Cr-51      -2.44E-02     1.40E-02    3.56E-02 u AP         SBN       384522002 9/30/2015   Cs-134       5.05E-04    2.69E-04     9.68E-04 u AP         SBN       384522002 9/30/2015   Cs-137       7.41E-05    2.27E-04     7.71E-04 u AP         SBN       384522002 9/30/2015    Fe-59      -3.42E-03     1.96E-03    4.20E-03 u AP         SBN       384522002 9/30/2015    I-131       3.72E-01     3.SlE-01    O.OOE+OO UI AP         SBN       384522002 9/30/2015    K-40        2.69E-03    2.77E-03     l.14E-02 U AP         SBN       384522002 9/30/2015   La-140      -2.09E-02    3.97E-02     1.21E-01 u AP         SBN       384522002 9/30/2015   Mn-54       -7.04E-04    3.49E-04     7.lSE-04 U AP         SBN       384522002 9/30/2015   Nb-95       -1.20E-03    7.19E-04     1.76E-03 u AP         SBN       384522002 9/30/2015   Ru-103       8.34E-04    9.52E-04     3.35E-03 u AP         SBN       384522002 9/30/2015   Ru-106       1.15E-03    2.41E-03     8.28E-03 u AP         SBN       384522002 9/30/2015   Sb-124      -l.33E-03     1.53E-03    4.13E-03 u AP         SBN       384522002 9/30/2015   Sb-125       6.98E-04     6.86E-04    l.70E-03 u AP         SBN       384522002 9/30/2015    Se-75      -5.74E-04     3.83E-04    l.06E-03 u AP         SBN       384522002 9/30/2015   Th-228       4.22E-04     3.21E-04    l.23E-03 u AP         SBN       384522002 9/30/2015    Zn-65       6.86E-04     6.61E-04    2.38E-03 u AP         SBN       384522002 9/30/2015    Zr-95       1.58E-03    9.35E-04     3.13E-03 u AP         DOW       384522003 9/30/2015   Ac-228       3.54E-04    4.43E-04     l.60E-03 u AP         DOW       384522003 9/30/2015  Ag-108m       9,87E-05    8.33E-05     2.94E-04 U AP         DOW       384522003 9/30/2015  Ag-1 lOm     -2.16E-04     1.66E-04    3.91E-04 u AP         DOW       384522003 9/30/2015   Ba-140       l.36E-02    4.lOE-02     l.38E-01 u AP         DOW       384522003 9/30/2015    Be-7        1.20E-01     1.04E-02    9.41E-03 AP         DOW       384522003 9/30/2015   Ce-141       4.38E-04     8.95E-04    2.24E-03 u AP         DOW       384522003 9/30/2015   Ce-144      -1.0SE-04     5.43E-04    l.74E-03 u AP         DOW       384522003 9/30/2015   Co-57        5.30E-05     7.65E-05    2.57E-04 u AP         DOW       384522003 9/30/2015   Co-58        7.22E-05     1.91E-04    6.69E-04 u AP         DOW       384522003 9/30/2015    Co-60      -8.36E-05     1.23E-04    3.56E-04 u AP         DOW       384522003 9/30/2015    Cr-51       2.34E-03     8.21E-03    2.78E-02 u
 *AP         DOW       384522003 9/30/2015   Cs-134       9.70E-05    9.91E-05     3.70E-04 u AP         DOW       384522003 9/30/2015   Cs-137       l.91E-04     l.12E-04    4.llE-04 u AP         DOW       384522003 9/30/2015    Fe-59       5.61E-05     1.03E-03    3.38E-03 u AP         DOW       384522003 9/30/2015    I-131       l.52E-01    2.34E-01     O.OOE+OO UI AP         DOW       384522003 9/30/2015    K-40        3.57E-04    2.13E-03     7.77E-03 u AP         DOW       384522003 9/30/2015   La-140       l.02E-04     1.46E-02    4.SlE-02 u AP         DOW       384522003 9/30/2015   Mn-54       -1.89E-04     l.53E-04    4.09E-04 u AP         DOW       384522003 9/30/2015   Nb-95       -l.42E-04     2.86E-04    8.91E-04 u AP         DOW       384522003 9/30/2015   Ru-103      -1.40E-04     4.02E-04    l.25E-03 u AP         DOW       384522003 9/30/2015   Ru-106      -2.56E-04     l.27E-03    3.96E-03 u AP         DOW       384522003 9/30/2015   Sb-124       2.99E-04     9.51E-04    3.28E-03 u AP         DOW       384522003 9/30/2015   Sb-125       l.14E-04    2.87E-04     9.72E-04 u AP         DOW       384522003 9/30/2015    Se-75      -4.45E-04    2.31E-04     5.96E-04 u AP         DOW       384522003 9/30/2015   Th-228      -2.96E-04     1.93E-04    5.94E-04 u AP         DOW       384522003 9/30/2015    Zn-65      -5.30E-04     3.99E-04    9.79E-04 u D-20

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN        DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        DOW        384522003   9/30/2015     Zr-95      -3.lOE-04    4.26E-04     l.25E-03 u AP         COL       384522004   9/30/2015    Ac-228      -8.78E-04    6.57E-04     l.72E-03 u AP         COL       384522004   9/30/2015   Ag-108m      -2.50E-05    8.95E-05     2.83E-04 u AP         COL       384522004   9/30/2015   Ag-llOm      -4.SOE-04    2.SOE-04     5.38E-04 u AP         COL       384522004   9/30/2015    Ba-140       4.87E-02    6.37E-02     2.23E-01 u AP         COL       384522004   9/30/2015     Be-7        1.17E-01     l.12E-02    l.03E-02 AP         COL       384522004   9/30/2015    Ce-141       1.47E-03    1.09E-03     3.39E-03 u AP         COL       384522004   9/30/2015    Ce-144       6.83E-04    8.07E-04     2.73E-03 u AP.        COL       384522004   9/30/2015    Co-57        8.41E-05     1.03E-04    3.49E-04 u AP         COL       384522004   9/30/2015    Co-58       -l.85E-04    3.48E-04     l.06E-03 u AP         COL       384522004   9/30/2015    Co-60        2.36E-04    2.23E-04     8.41E-04 u AP         COL       384522004   9/30/2015     Cr-51       l.42E-02     l.12E-02    3.74E-02 u AP         COL       384522004   9/30/2015    Cs-134       1.63E-04     l.43E-04    5.48E-04 u AP         COL       384522004   9/30/2015    Cs-137       l.53E-05     1.42E-04    4.62E-04 u AP         COL       384522004   9/30/2015     Fe-59      -1.38E-03     l.21E-03    2.77E-03 u AP         COL       384522004   9/30/2015     1-131       3.27E-01    2.81E-01     O.OOE+OO UI AP         COL       384522004   9/30/2015     K.-40      -2.95E-03    2.50E-03     7.65E-03 u AP         COL       384522004   9/30/2015    La-140       2.09E-05    2.45E-02     8.07E-02 u AP         COL       384522004   9/30/2015    Mn-54       -5.45E-05    1.72E-04     5.41E-04 u AP         COL       384522004   9/30/2015    Nb-95       -1.26E-05    4.04E-04     1.35E-03 u AP         COL       384522004   9/30/2015    Ru-103      -2.18E-04    6.18E-04     l.93E-03 u AP         COL       384522004   9/30/2015    Ru-106      -3.95E-03    2.26E-03     3.50E-03 u AP         COL       384522004   9/30/2015    Sb-124      O.OOE+OO     O.OOE+OO     O.OOE+OO UI AP         COL       384522004   9/30/2015    Sb-125       4.90E-04    4.04E-04     l.44E-03 u AP         COL       384522004   9/30/2015     Se-75      -5.51E-04    2.91E-04     7.53E-04 u AP         COL       384522004   9/30/2015    Th-228       6.12E-05    3.62E-04     8.32E-04 u AP         COL       384522004   9/30/2015    Zn-65       -1.30E-03    6.38E-04     9.93E-04 u AP         COL       384522004   9/30/2015     Zr-95      -1.21E-04    6.49E-04     2.20E-03 u AP         ONS-1     384522005   9/30/2015    Ac-228      -3.27E-04    6.15E-04     2.0SE-03 u AP         ONS-1     384522005   9/30/2015   Ag-108m      -1.25E-04    1.03E-04     2.40E-04 u AP         ONS-1     384522005   9/30/2015   Ag-llOm      -4.24E-04    2.23E-04     3.92E-04 u AP         ONS-1     384522005   9/30/2015. Ba-140       2.22E-02    4.63E-02     1.57E-01 u AP         ONS-1     384522005   9/30/2015     Be-7        1.39E-01     1.19E-02    1.0lE-02 AP         ONS-1     384522005   9/30/2015    Ce-141      -2.26E-04     l.09E-03    3.49E-03 u AP         ONS-1     384522005   9/30/2015    Ce-144       9.22E-04    7.98E-04     2.65E-03 u AP         ONS-1     384522005   9/30/2015    Co-57       -3.60E-05     l.02E-04    3.23E-04 u AP         ONS-1     384522005*  9/30/2015    Co-58       -3.64E-04    3.18E-04     8.54E-04 u AP         ONS-1     384522005   9/30/2015    Co-60       -2.06E-04     l.85E-04    4.86E-04 u AP         ONS-1     384522005   9/30/2015     Cr-51       7.75E-03     l.05E-02    3.58E-02 u AP         ONS-1     384522005   9/30/2015    Cs-134      -5.55E-06     l.60E-04    5.27E-04 u AP         ONS-1     384522005   9/30/2015    Cs-137       9.63E-06     l.07E-04    3.62E-04 u AP         ONS-1     384522005   9/30/2015     Fe-59       8.30E-05    9.37E-04     3.07E-03 u AP         ONS-1     384522005   9/30/2015     1-131      -1.78E-01    2.87E-01     O.OOE+OO u AP         ONS-1     384522005   9/30/2015     K-40        8.00E-05    2.03E-03     7.llE-03 u AP         ONS-1     384522005   9/30/2015    La-140       3.46E-02     1.91E-02    8.05E-02 u AP         ONS-1     384522005   9/30/2015    Mn~54        4.0lE-05     1.77E-04    5.99E-04 u AP         ONS-1     384522005   9/30/2015    Nb-95       -1.83E-04    3.37E-04     l.04E-03 u AP         ONS-1     384522005   9/30/2015    Ru-103      -4.86E-05    5.16E-04     l.65E-03 u AP         ONS-1     384522005 . 9/30/2015    Ru-106       1.99E-03     l.52E-03    5.03E-03 u AP         ONS-1     384522005   9/30/2015    Sb-124       2.24E-03     l.06E-03    4.27E-03 u D-21

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE       (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-1     384522005 9/30/2015    Sb-125     -3.75E-04    3.97E-04     l.16E-03 u AP         ONS-1     384522005 9/30/2015     Se-75     -3.23E-04    2.95E-04     8.96E-04 u AP         ONS-1     384522005 9/30/2015    Th-228      l.61E-04    3.0lE-04     8.57E-04 u AP         ONS-1     384522005 9/30/2015    Zn-65       3.14E-04    4.22E-04     l.48E-03 u AP         ONS-1     384522005 9/30/2015     Zr-95     -3.SOE-04    4.66E-04     l.32E-03 u AP         ONS-2     384522006 9/30/2015    Ac-228      3.71E-04    4.79E-04     l.85E-03 u AP         ONS-2     384522006 9/30/2015   Ag-108m      4.28E-05    9.18E-05     3.0SE-04 u AP         ONS-2     384522006 9/30/2015   Ag-llOm      3.83E-04    2.03E-04     7.42E-04 u AP         ONS-2     384522006 9/30/2015    Ba-140     -8.0lE-03    4.71E-02     l.47E-Ol u AP         ONS-2     384522006 9/30/2015     Be-7       l.26E-Ol     l.03E-02    9.28E-03 AP         ONS-2     384522006 9/30/2015. Ce-141      2.43E-04    8.16E-04     2.41E-03 u AP         ONS-2     384522006 9/30/2015    Ce-144     -4.74E-04    6.12E-04     l.86E-03 u AP         ONS-2     384522006 9/30/2015    Co-57       l.71E-04     l.18E-04    2.84E-04 u AP         ONS-2     384522006 9/30/2015    Co-58      -5.86E-05    2.51E-04     7.97E-04 u AP         ONS-2     384522006 9/30/2015    Co-60      -l.20E-05    8.19E-05     2.59E-04 u AP         ONS-2     384522006 9/30/2015     Cr-51      6.21E-03    7.0lE-03     2.42E-02 u AP         ONS-2     384522006 9/30/2015    Cs-134     -7.35E-05     1.31E-04    3.97E-04 u AP         ONS-2     384522006 9/30/2015    Cs-137     -1.03E-04     l.17E-04    3.48E-04 u AP         ONS-2     384522006 9/30/2015     Fe-59     -8.43E-04    9.17E-04     l.97E-03 u AP         ONS-2     384522006 9/30/2015     I-131      1.37E-01    2.03E-Ol     O.OOE+OO UI AP         ONS-2     384522006 9/30/2015     K-40       8.73E-04     l.74E-03    6.53E-03 u AP         ONS-2     384522006 9/30/2015    La-140     -6.76E-03     l.63E-02    4.73E-02 u AP         ONS-2     384522006 9/30/2015    Mn-54       7.74E-05     1.47E-04    4.92E-04 u AP         ONS-2     384522006 9/30/2015    Nb-95       4.32E-04    3.0lE-04     l.OSE-03 u AP         ONS-2     384522006 9/30/2015    Ru-103     -2.15E-06    4.14E-04     l.33E-03 u AP         ONS-2     384522006 9/30/2015    Ru-106     -2.39E-03     l.61E-03    3.49E-03 u AP         ONS-2     384522006 9/30/2015    Sb-124      7.81E-05    8.09E-04     2.75E-03 u AP         ONS-2     384522006 9/30/2015    Sb-125     -2.72E-05    2.68E-04     8.62E-04 u AP         ONS-2     384522006 9/30/2015     Se-75     -7.07E-06    2.12E-04     7.12E-04 u AP         ONS-2     384522006 9/30/2015    Th-228     -l.73E-04     l.90E-04    6.15E-04 u AP         ONS-2     384522006 9/30/2015    Zn-65       l.18E-04    3.lOE-04     1.0SE-03 u AP         ONS-2     384522006 9/30/2015     Zr-95     -l.12E-04    4.87E-04     1.56E-03 u AP         ONS-3     384522007 9/30/2015    Ac-228     -4.24E-04    4.96E-04     1.57E-03 u AP         ONS-3     384522007 9/30/2015   Ag-108m      l.86E-04     1.02E-04    3.42E-04 u AP         ONS-3     384522007 9/30/2015   Ag-llOm      3.61E-04    2.18E-04     7.86E-04 u AP         ONS-3     384522007 9/30/2015    Ba-140      3.33E-02    4.llE-02     l.43E-Ol u AP         ONS-3     384522007 9/30/2015     Be-7 ,     l.30E-01     l.06E-02    9.28E-03 AP         ONS-3     384522007 9/30/2015    Ce-141      4.64E-04    8.44E-04     2.79E-03 u AP         ONS-3     384522007 9/30/2015    Ce-144     -1.06E-03    6.89E-04     l.90E-03 u AP         ONS-3     384522007 9/30/2015    Co-57       2.32E-04     l.48E-04    2.45E-04 u AP         ONS-3     384522007 9/30/2015    Co-58       4.84E-04    2.67E-04     9.56E-04 u AP         ONS-3     384522007 9/30/2015    Co-60       5.66E-05     l.71E-04    5.75E-04 u AP         ONS-3     384522007 9/30/2015     Cr-51     -3.95E-03    7.19E-03     2.31E-02 u AP         ONS-3     384522007 9/30/2015    Cs-134     -4.21E-05     l.19E-04    4.05E-04 u AP         ONS-3     384522007 9/30/2015    Cs-137      l.66E-05     l.OOE-04    3.29E-04 u AP         ONS-3     384522007 9/30/2015     Fe-59     -9.0lE-04     9.82E-04    2.79E-03 u AP         ONS-3     384522007 9/30/2015     I-131     -4.73E-02    2.27E-Ol     O.OOE+OO u AP         ONS-3     384522007 9/30/2015     K-40       4.16E-03     l.85E-03    4.19E-03 u AP         ONS-3     384522007 9/30/2015    La-140     -4.57E-02    2.31E-02     4.14E-02 u AP         ONS-3     384522007 9/30/2015    Mn-54       2.74E-05     l.30E-04    3.91E-04 u D-22

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC        FLAGS TYPE    STATION       LSN      DATE     NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        ONS-3     384522007 9/30/2015    Nb-95       l.35E-04    2.85E-04     9.95E-04  u AP        ONS-3     384522007 9/30/2015   Ru-103      -9.48E-04    5.03E-04     l.18E-03  u AP        ONS-3     384522007 9/30/2015   Ru-106      -6.05E-04    9.69E-04     2.87E-03  u AP        ONS-3     384522007 9/30/2015   Sb-124       8.62E-04    8.27E-04     3.1 IE-03 u AP        ONS-3     384522007 9/30/2015   Sb-125      -3.89E-04    2.74E-04     7.40E-04  u AP        ONS-3     384522007 9/30/2015    Se-75      -2.62E-04    2.13E-04     6.42E-04  u AP        ONS-3     384522007 9/30/2015   Th-228       1.90E-04     l.87E-04    6.28E-04  u AP        ONS-3     384522007 9/30/2015    Zn-65       5.29E-04    2.91E-04     1.lOE-03  u AP        ONS-3     384522007 9/30/2015    Zr-95       2.62E-04    4.41E-04     l.57E-03  u AP        ONS-4     384522008 9/30/2015   Ac-228       9.41E-04    5.lOE-04     l.86E-03  u AP        ONS-4     384522008 9/30/2015  Ag-108m       1.59E-05    7.90E-05     2.64E-04  u AP        ONS-4     384522008 9/30/2015  Ag-llOm      -l.56E-04     1.82E-04    5.20E-04  u AP        ONS-4     384522008 9/30/2015   Ba-140       3.26E-02    4.71E-02     1.61E-01  u AP        ONS-4     384522008 9/30/2015    Be-7        l.34E-01     1.13E-02    9.25E-03 AP        ONS-4     384522008 9/30/2015   Ce-141       1.0IE-07    8.44E-04     2.69E-03  u AP        ONS-4     384522008 9/30/2015   Ce-144       1.21E-05    5.07E-04     l.64E-03  u AP        ONS-4     384522008 9/30/2015    Co-57      -4.49E-05    6.84E-05     2.09E-04  u AP        ONS-4     384522008 9/30/2015    Co-58       3.66E-04    2.22E-04     8.36E-04  u AP        ONS-4     384522008 9/30/2015    Co-60       l.78E-04    9.62E-05     4.03E-04  u AP        ONS-4     384522008 9/30/2015    Cr-51      -4.80E-03    7.30E-03     2.30E-02  u AP        ONS-4     384522008 9/30/2015   Cs-134      -1.62E-04     l.25E-04    3.24E-04  u AP        ONS-4     384522008 9/30/2015   Cs-137      -4.90E-05     1.16E-04    3.74E-04  u AP        ONS-4     384522008 9/30/2015    Fe-59      -3.35E-04    9.61E-04     2.98E-03  u AP       ONS-4      384522008 9/30/2015    I-131       4.04E-02    2.41E-01    O.OOE+OO UI AP       ONS-4      384522008 9/30/2015    K-40        1.49E-03     l.92E-03    6.94E-03  u AP        ONS-4     384522008 9/30/2015   La-140      -8.29E-03     l.71E-02    5.08E-02  u AP        ONS-4     384522008 9/30/2015   Mn-54       -1.33E-04     l.07E-04    2.66E-04  u AP        ONS-4     384522008 9/30/2015    Nb-95      -3.38E-04    2.63E-04     6.94E-04  u AP        ONS-4     384522008 9/30/2015   Ru-103       2.13E-04    3.72E-04     1.28E-03  u AP        ONS-4     384522008 9/30/2015   Ru-106      -3.00E-03     1.41E-03    2.72E-03  u AP        ONS-4     384522008 9/30/2015   Sb-124      -3.95E-04    7.47E-04     2.19E-03  u AP        ONS-4     384522008 9/30/2015   Sb-125       l.06E-04    2.84E-04     9.56E-04  u AP        ONS-4     384522008 9/30/2015    Se-75       l.87E-04     1.97E-04    6.85E-04  u
 . AP        ONS-4     384522008 9/30/2015   Th-228       8.43E-05     1.77E-04    6.38E-04  u AP        ONS-4     384522008 9/30/2015    Zn-65      -l.79E-04    3.40E-04     l.02E-03  u AP       ONS-4      384522008 9/30/2015    Zr-95       5.07E-04    4.80E-04     1.74E-03  u AP       ONS-5      384522009 9/30/2015   Ac-228      -4.38E-05    5.78E-04     1.99E-03  u AP       ONS-5      384522009 9/30/2015  Ag-108m       l.50E-04    9.99E-05     3.47E-04  u AP       ONS-5      384522009 9/30/2015  Ag-llOm      -3.lOE-04    2.08E-04     4.50E-04  u AP        ONS-5     384522009 9/30/2015   Ba-140      -4.63E-03    4.86E-02     l.62E-01  u AP        ONS-5     384522009 9/30/2015    Be-7        l.32E-01     1.14E-02    9.08E-03 AP        ONS-5     384522009 9/30/2015   Ce-141       l.22E-03    8.56E-04     2.85E-03  u AP        ONS-5     384522009 9/30/2015   Ce-144      -l.30E-03    8.16E-04     2.19E-03  u AP        ONS-5     384522009 9/30/2015    Co-57      -2.91E-05    8.79E-05     2.77E-04  u AP        ONS-5     384522009 9/30/2015    Co-58       2.23E-04    2.84E-04     1.00E-03  u AP        ONS-5     384522009 9/30/2015    Co-60       l.94E-05    2.06E-04     6.83E-04  u AP       ONS-5      384522009 9/30/2015   'Cr-51      -l.43E-02    9.92E-03     2.12E-02  u AP       ONS-5      384522009 9/30/2015   Cs-134      -9.00E-05     1.27E-04    3.63E-04  u AP       ONS-5      384522009 9/30/2015   Cs-137      -1.85E-04     l.32E-04    3.40E-04  u AP       ONS-5      384522009 9/30/2015    Fe-59      -9.50E-04    9.30E-04     2.48E-03  u D-23

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-5     384522009 9/30/2015     I-131      -2.38E-01    2.56E-01     O.OOE+OO u AP         ONS-5     384522009 9/30/2015     K-40       -8.99E-04    2.06E-03     6.99E-03 u AP         ONS-5     384522009 9/30/2015    La-140      -1.0lE-02     l.92E-02    5.34E-02 u AP         ONS-5     384522009 9/30/2015    Mn-54       -l.OSE-05     1.29E-04    4.14E-04 u AP         ONS-5     384522009 9/30/2015    Nb-95        l.68E-04    3.16E-04     l.09E-03 u AP         ONS-5     384522009 9/30/2015    Ru-103       7.02E-04    5.19E-04     l.86E-03 u AP         ONS-5     384522009 9/30/2015    Ru-106      -9.31E-05     l.18E-03    3.90E-03 u AP         ONS-5     384522009 9/30/2015    Sb-124       l.18E-03    9.74E-04     3.76E-03 u AP         ONS-5     384522009 9/30/2015    Sb-125       l.05E-06    3.llE-04     1.0lE-03 u AP         ONS-5     384522009 9/30/2015     Se-75      -l.21E-06    2.18E-04     7.27E-04 u AP         ONS-5     384522009 9/30/2015    Th-228       l.65E-04     l.97E-04    6.90E-04 u AP         ONS-5     384522009 9/30/2015    Zn-65        2.39E-04    4. l lE-04   l.45E-03 u AP         ONS-5     384522009 9/30/2015     Zr-95       2.00E-04    4.52E-04     1.57E-03 u AP         ONS-6     384522010 9/30/2015    Ac-228       4.70E-04    4.85E-04     1.78E-03 u AP         ONS-6     384522010 9/30/2015   Ag-108m      -3.68E-05    8.72E-05     2.71E-04 u AP         ONS-6     384522010 9/30/2015   Ag-llOm      -5.96E-05     1.45E-04    4.40E-04 u AP         ONS-6     384522010 9/30/2015    Ba-140      -1.47E-02    3.79E-02     1.15E-01 u AP         ONS-6     384522010 9/30/2015     Be-7        1.40E-01     l.llE-02    6.96E-03 AP         ONS-6     384522010 9/30/2015    Ce-141       7.73E-04    7.85E-04     2.60E-03 u AP         ONS-6     384522010 9/30/2015    Ce-144      -8.29E-04    6.03E-04     l.66E-03 u AP         ONS-6     384522010 9/30/2015    Co-57        3.95E-06    7.06E-05     2.29E-04 u AP         ONS-6     384522010 9/30/2015    Co-58        6.0SE-05     1.81E-04    6.27E-04 u AP         ONS-6     384522010 9/30/2015    Co-60       -1.21E-04     l.29E-04    3.47E-04 u AP         ONS-6     384522010 9/30/2015    Cr-51        2.81E-03    6.76E-03     2.30E-02 u AP         ONS-6     384522010 9/30/2015    Cs-134       6.36E-05     l.31E-04    4.54E-04 u AP         ONS-6     384522010 9/30/2015    Cs-137      -8.35E-05    9.84E-05     2.88E-04 u AP         ONS-6     384522010 9/30/2015     Fe-59      -5.0SE-04    6.71E-04     1.76E-03 u AP         ONS-6     384522010 9/30/2015     1.-131     -8.26E-02    2.30E-01     O.OOE+OO u AP         ONS-6     384522010 9/30/2015     K-40        2.75E-03    2.19E-03     8.30E-03 u AP         ONS-6     384522010 9/30/2015    La-140      -9.69E-03    2.09E-02     6.25E-02 u AP         ONS-6     384522010 9/30/2015    Mn-54        6.27E-05     l.34E-04    4.61E-04 u AP         ONS-6     384522010 9/30/2015    Nb-95        l.1 lE-04   2.28E-04     8.19E-04 u AP         ONS-6     384522010 9/30/2015    Ru-103      -5.89E-04    4.50E-04     1.16E-03 u AP         ONS-6     384522010 9/30/2015    Ru-106       l.24E-03    9.78E-04     3.33E-03 u AP         ONS-6     384522010 9/30/2015    Sb-124       5.76E-04    7.61E-04     2.81E-03 u AP         ONS-6     384522010 9/30/2015    Sb-125      -l.73E-04    2.65E-04     7.99E-04 u AP         ONS-6     384522010 9/30/2015     Se-75       3.50E-04    2.06E-04     7.0lE-04 u AP         ONS-6     384522010 9/30/2015    Th-228       5.84E-05    2.22E-04     6.06E-04 u AP         ONS-6     384522010 9/30/2015    Zn-65       -3.29E-04    3.75E-04     1.03E-03 u AP         ONS-6     384522010 9130/2015     Zr-95      -4.33E-04    3.65E-04     9.0SE-04 u AP        NBF        380195001 8/26/2015    BETA         2.50E-02     1.63E-03    1.0lE-03 AP         SBN       380195002 8/26/2015    BETA         2.66E-02    1.67E-03     9.98E-04 AP        DOW        380195003 8/26/2015    BETA         2.72E-02     l.67E-03    9.73E-04 AP         COL       380195004 8/26/2015    BETA         2.40E-02     l.62E-03    1.03E-03 AP         ONS-1     380195005 8/26/2015    BETA         2.31E-02     l.56E-03    1.00E-03 AP         ONS-2     380195006 8/26/2015    BETA         2.94E-02    1.79E-03     1.03E-03 AP         ONS-3     380195007 8/26/2015    BETA         2.61E-02    1.65E-03     9.98E-04 AP         ONS-4     380195008 8/26/2015    BETA         2.29E-02     l.62E-03    l.08E-03 AP         ONS-5     380195009 8/26/2015    BETA         2.66E-02     l.68E-03    1.0lE-03 AP         ONS-6     380195010 8/26/2015    BETA         2.83E-02    1.74E-03     l.02E-03 D-24

Donald C. Cook Nuclear Plant           Annual Radiological Enviror;imental Operating Report 2015 SAMPLE                             END                      CONC        STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)      (pCi/m3)    (pCi/m3)
AP         NBF       380656001 9/2/2015     BETA         4.78E-02      2.27E-03     l.03E-03 AP         SBN       380656002 9/2/2015     BETA         5.18E-02      2.37E-03     l.04E-03 AP         DOW       380656003 9/2/2015     BETA         4.34E-02      2.13E-03     1.00E-03 AP         COL       380656004 9/2/2015     BETA         4.07E-02      2.lOE-03     1.05E-03 AP         ONS-1     380656005 9/2/2015     BETA         4.47E-02      2.18E-03     l.02E-03 AP         ONS-2     380656006  9/2/2015    BETA         5.07E-02      2.29E-03     9.96E-04 AP         ONS-3     380656007  9/2/2015    BETA         5.14E-02      2.36E-03     1.04E-03 AP         ONS-4     380656008  9/2/2015    BETA         4.75E-02      2.37E-03     1.14E-03 AP         ONS-5     380656009  9/2/2015    BETA         5.55E-02      2.43E-03     1.02E-03 AP         ONS-6     380656010  9/2/2015    BETA         5.28E-02      2.37E-03     1.02E-03 AP         NBF       381042001  9/9/2015    BETA         5.91E-02      2.52E-03     l.04E-03 AP         SBN       381042002  9/9/2015    BETA         5.87E-02      2.52E-03     1.05E-03 AP         DOW       381042003 9/9/2015     BETA         5.85E-02      2.49E-03     l.02E-03 AP         COL       381042004 9/9/2015     BETA         5.89E-02      2.46E-03     9.89E-04 AP         ONS-1     381042005 9/9/2015     BETA         5.32E-02      2.36E-03     1.0lE-03 AP         ONS-2     381042006  9/9/2015    BETA         5.64E-02      2.42E-03     1.00E-03 AP         ONS-3     381042007  9/9/2015    BETA         5.52E-02      2.45E-03     1.06E-03 AP         ONS-4     381042008  9/9/2015    BETA         4.67E-02      2.25E-03     l.06E-03 AP         ONS-5     381042009  9/9/2015    BETA         5.31E-02      2.36E-03     1.0lE-03 AP         ONS-6     381042010  9/9/2015    BETA         5.45E-02      2.42E-03     1.04E-03 AP         NBF       381428001 9/16/2015    BETA         2.85E-02       1.74E-03    l.08E-03 AP         SBN       381428002 9/16/2015    BETA         3.21E-02       1.85E-03    1.09E-03 AP         DOW       381428003 9/16/2015    BETA         2.96E-02       1.71E-03    1.0lE-03 AP         COL       381428004 9/16/2015    BETA         2.76E-02       1.72E-03    l.09E-03 AP         ONS-1     381428005 9/16/2015    BETA         3.30E-02       1.88E-03    1.09E-03 AP         ONS-2     381428006 9/16/2015    BETA         2.89E-02       1.78E-03    1.1 lE-03 AP         ONS-3     381428007 9/16/2015    BETA         3.04E-02       1.82E-03    1. lOE-03 AP         ONS-4     381428008 9/16/2015    BETA         2.83E-02       1.74E-03    1.08E-03 AP         ONS-5     381428009 9/16/2015    BETA         2.90E-02       1.77E-03    l. lOE-03 AP         ONS-6     381428010 9/16/2015    BETA         2.95E-02       1.73E-03    1.02E-03 AP         NBF       381831001 9/23/2015    BETA         3.27E-02       1.87E-03    9.79E-04 AP        .SBN       381831002 9/23/2015    BETA         2.78E-02       1.68E-03    9.30E-04 AP         DOW       381831003 9/23/2015    BETA         3.19E-02       l.81E-03    9.41E-04 AP         COL       381831004 9/23/2015    BETA         3.26E-02       1.86E-03    9.80E-04 AP         ONS-1     381831005 9/23/2015    BETA         3.73E-02       1.98E-03    9.60E-04 AP         ONS-2     381831006 9/23/2015    BETA         3.18E-02       1.82E-03    9.54E-04 AP         ONS-3     381831007 9/23/2015    BETA         2.85E-02       1.75E~03    9.94E-04 AP         ONS-4     381831008 9123/2015    BETA         2.92E-02       1.76E-03    9.78E-04 AP         ONS-5     381831009 9/23/2015    BETA         2.84E-02       1.74E-03    9.76E-04 AP         ONS-6     381831010 9/23/2015    BETA         2.73E-02       1.66E-03    9.24E-04 AP         NBF       382263001 9/30/2015    BETA         4.17E-02       2.lOE-03    9.77E-04 AP         SBN       382263002 9/30/2015    BETA         3.48E-02       l.94E-03    1.00E-03 AP         DOW       382263003 9/30/2015    BETA         2.96E-02       1.79E-03    1.0lE-03 AP         COL       382263004 9/30/2015    BETA         3.83E-02       2.02E-03    9.84E-04 AP         ONS-1     382263005 9/30/2015     BETA        3.74E-02       1.97E-03    9.64E-04 AP         ONS-2     382263006 9/30/2015     BETA        3.59E-02       2.00E-03    1.04E-03 AP         ONS-3     382263007 9/30/2015    BETA         3.23E-02       1.83E-03    9.60E-04 AP         ONS-4     382263008 9/30/2015    BETA         3.43E-02       1.90E-03    9.77E-04 AP         ONS-5     382263009 9/30/2015    BETA         4.15E-02       2.08E-03    9.68E-04 AP         ONS-6     382263010 9/30/2015    BETA         3.30E-02       1.86E-03    9.73E-04 D-25

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                     CONC      STD.DEV.        MDC     FLAGS TYPE     STATION       LSN       DATE     NUCLIDE        (pCi/m3)     (pCi/m3)    (pCi/m3)
 . AP       NBF        382890001  101712015   BETA         1.52E-02      1.26E-03    l.02E-03 AP        SBN       382890002  101712015   BETA         1.16E-02      l.14E-03    l.07E-03 AP        DOW       382890003  101712015   BETA         l.34E-02      l.25E-03    l.13E-03 AP        COL       382890004  101712015   BETA         1.48E-02      l.31E-03    l.12E-03 AP        ONS-1     382890005  101712015   BETA         1.47E-02      1.28E-03    l.07E-03 AP        ONS-2     382890006  101712015   BETA         l.34E-02      1.20E-03    1.05E-03 AP        ONS-3     382890007  101712015   BETA         1.25E-02      1: 16E-03   1.03E-03 AP        ONS-4     382890008  101712015   BETA         l.40E-02      1.21E-03    1.02E-03 AP        ONS-5     382890009  101712015   BETA         1.18E-02      l.14E-03    l.06E-03 AP        ONS-6     382890010  101712015   BETA         1.28E-02      l.16E-03    1.0lE-03 AP       NBF        383491001 1011412015   BETA         3.44E-02      1.91E-03    l.03E-03 AP        SBN       383491002 1011412015   BETA         3.20E-02      l.86E-03    1.05E-03 AP        DOW       383491003 1011412015   BETA         3.22E-02     1.82E-03     9.95E-04 AP        COL       383491004 10/14/2015   BETA         3.04E-02      1.77E-03    9.98E-04 AP        ONS-1     383491005 10/14/2015   BETA         3.37E-02      1.92E-03    l.06E-03 AP        ONS-2     383491006 10/14/2015   BETA         3.70E-02      1.97E-03    1.0lE-03 AP        ONS-3     383491007 10/14/2015   BETA         3.34E-02      1.88E-03  . l.03E-03 AP        ONS-4     383491008 1011412015   BETA         2.92E-02      l.72E-03    9.76E-04 AP        ONS-5     383491009 1011412015   BETA         3.65E-02      l.99E-03    l.05E-03 AP        ONS-6     383491010 10/14/2015   BETA         3.79E-02     2.06E-03     l.08E-03 AP       NBF        383944001 1012112015   BETA         2.80E-02      1.71E-03    9.51E-04 AP        SBN       383944002 10/21/2015   BETA         2.78E-02      l.69E-03    9.37E-04 AP,       DOW       383944003 1012112015   BETA         3.05E-02      1.76E-03    9.23E-04 AP        COL       383944004 10/21/2015   BETA         3.08E-02      l.79E-03    9.50E-04 AP        ONS-1     383944005 1012112015   BETA         2.74E-02     1.68E-03     9.36E-04 AP        ONS-2     383944006 1012112015   BETA         3.08E-02      1.76E-03    9.21E-04 AP        ONS-3     383944007 1012112015   BETA         3.04E-02      1.79E-03    9.58E-04 AP        ONS-4     383944008 1012112015   BETA         2.71E-02      1.66E-03    9.33E-04 AP        ONS-5     383944009 1012112015   BETA         3.45E-02      l.86E-03    9.17E-04 AP        ONS-6     383944010 1012112015   BETA         3.08E-02      1.79E-03    9.44E-04 AP       NBF        384389001 10/28/2015   BETA         2.82E-02      l.62E-03    1.23E-03 AP        SBN       384389002 10/28/2015   BETA         3.21E-02      l.73E-03    l.23E-03 AP        DOW       384389003 10/28/2015   BETA         2.44E-02      l.53E-03    1.25E-03 AP        COL       384389004 10/28/2015   BETA         2.62E-02      1.53E~03    l.18E-03 AP        ONS-1     384389005 10/28/2015   BETA         2.53E-02      l.60E-03    l.33E-03 AP        ONS-2     384389006 10/28/2015   BETA         2.68E-02     1.59E-03     l.24E-03 AP        ONS-3     384389007 10/28/2015   BETA         2.41E-02
* 1.47E-03     l.19E-03 AP        ONS-4     384389008 10/28/2015   BETA         2.77E-02      l.57E-03    l.18E-03 AP        ONS-5     384389009 10/28/2015   BETA         2.79E-02     1.64E-03     l.26E-03 AP        ONS-6     384389010 10/28/2015   BETA         2.53E-02      1.55E-03    l.25E-03 AP       NBF        384929001  111412015   BETA         2.40E-02      l.50E-03    l.28E-03 AP        SBN       384929002  111412015   BETA         2.50E-02      1.48E-03    1.20E-03 AP        DOW       384929003  111412015   BETA         2.63E-02      l.54E-03    1.24E-03 AP        COL       384929004  111412015   BETA         2.47E-02      1.48E-03    1.21E-03 AP        ONS-1     384929005  111412015   BETA         2.51E-02      1.51E-03    l.23E-03 AP        ONS-2     384929006  111412015   BETA         2.73E-02      l.58E-03    l.26E-03 AP        ONS-3     384929007  111412015   BETA         2.73E-02      l.57E-03    l.23E-03 AP        ONS-4     384929008  11/4/2015   BETA         2.18E-02      l.41E-03    l.23E-03 AP        ONS-5     384929009  11/4/2015   BETA         2.60E-02      l.57E-03    l.29E-03 AP        ONS-6     384929010  1114/2015   BETA         2.47E-02      1.52E-03    l.28E-03 D-26

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC         FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       385529001 1111112015   BETA         2.54E-02     l.53E-03    l.26E-03 AP         SBN       385529002 1111112015   BETA         3.08E-02     l.67E-03    l.24E-03 AP         DOW       385529003 11/1112015   BETA         3.0IE-02     l.64E-03    l.23E-03 AP         COL       385529004 11/11/2015   BETA         2.5IE-02     l.53E-03    l.27E-03 AP         ONS-1     385529005 11/1112015   BETA         3.04E-02     l.67E-03    l.26E-03 AP         ONS-2     385529006 11/1112015   BETA         2.96E-02     l.64E-03    l.24E-03 AP         ONS-3     385529007 11/11/2015   BETA         2.96E-02     l.63E-03    l.23E-03 AP         ONS-4     385529008 11/11/2015   BETA         3.06E-02     l.66E-03    l.24E-03 AP         ONS-5     385529009 11/1112015   BETA         3.46E-02     l.79E-03    l.28E-03 AP         ONS-6     385529010 1111112015   BETA         2.92E-02     l.64E-03    l.26E-03 AP         NBF       386093001 11/18/2015   BETA         3.66E-02     l.83E-03    l. l 7E-03 AP         SBN       386093002 11118/2015   BETA         3.52E-02     l.86E-03    l.27E-03 AP         DOW       386093003 11/18/2015   BETA         3.19E-02     l.6IE-03    l.05E-03 AP         COL       386093004 11/18/2015   BETA         3.62E-02     l.82E-03    l.l7E-03 AP         ONS-1     386093005 11/18/2015   BETA         2.93E-02     l.62E-03    l.l5E-03 AP         ONS-2     386093006 11/18/2015   BETA         3.73E-02     l.85E-03    l.l8E-03 AP         ONS-3     386093007 11/18/2015   BETA         3.94E-02     l.90E-03    l.18E-03 AP         ONS-4     386093008 11/18/2015   BETA         3.47E-02     l.78E-03    l.l8E-03 AP         ONS-5     386093009 11/18/2015   BETA         3.46E-02     l.80E-03    l.2IE-03 AP         ONS-6     386093010 11/18/2015   BETA         3.54E-02     l.81E-03    l.l9E-03 AP         NBF       389027001 12/30/2015   Ac-228      -4.85E-04    4.99E-04     l.56E-03   u AP         NBF       389027001 12/30/2015  Ag-108m      -l.37E-04     l.03E-04    2.82E-04   u AP         NBF       389027001 12/30/2015  Ag-llOm       l.53E-04     l.41E-04    5.2IE-04   u AP        NBF        389027001 12/30/2015   Ba-140 .    -6.17E-03    8.6IE-03     2.46E-02   u AP        NBF        389027001 12/30/2015    Be-7        9.93E-02    7.47E-03     4.96E-03 AP         NBF       389027001 12/30/2015   Ce-141      -3.05E-04    4.35E-04     l.31E-03   u AP        NBF        389027001 12/30/2015   Ce-144      -2.15E-05    6.17E-04     2.00E-03   u AP         NBF       389027001 12/30/2015   Co-57       -5.51E-05    7.27E-05     2.23E-04   u AP         NBF       389027001 12/30/2015   Co-58        6.91E-05    2.19E-04     7.39E-04   u AP         NBF       389027001 12/30/2015   Co-60       -l.53E-04     l.38E-04    3.50E-04   u AP         NBF       389027001 12/30/2015    Cr-51       3.62E-04    3.74E-03     l.24E-02   u AP         NBF       389027001 12/30/2015   Cs-134       l.95E-04     l.48E-04    5.25E-04   u AP         NBF       389027001 12/30/2015   Cs-137       l.46E-04     l.08E-04    3.90E-04   u AP         NBF       389027001 12/30/2015    Fe-59       8.78E-04     6.93E-04    2.5IE-03   u AP         NBF       389027001 12/30/2015    1-131      -2.56E-02     l.79E-02    4.79E-02   u AP         NBF       389027001 12/30/2015    K-40        2.70E-03     l.87E-03    6.92E-03   u AP         NBF       389027001 12/30/2015   La-140      -2.88E-03    3.7IE-03     9.70E-03   u AP         NBF       389027001 12/30/2015   Mn-54        8.30E-05     l.47E-04    5.02E-04   u AP         NBF       389027001 12/30/2015   Nb-95        l.09E-04     l.79E-04    5.66E-04   u AP         NBF       389027001 12/30/2015   Ru-103      -7.45E-05    2.7IE-04     8.45E-04   u AP         NBF       389027001 12/30/2015   Ru-106      -8.64E-04     l.03E-03    3.07E-03   u AP         NBF       389027001 12/30/2015   Sb-124       6.26E-04    3.90E-04     l.69E-03   u AP         NBF       389027001 12/30/2015   Sb-125      -7.59E-04    3.52E-04     7.66E-04   u AP         NBF       389027001 12/30/2015    Se-75      -9.43E-05     l.78E-04    5.74E-04   u AP         NBF       389027001 12/30/2015   Th-228       2.9IE-04     l.80E-04    6.09E-04   u AP         NBF       389027001 12/30/2015    Zn-65      -6.05E-05    2.77E-04     8.98E-04   u AP         NBF       389027001 12/30/2015    Zr-95       l.94E-04    3.09E-04     l.09E-03   u AP         SBN       389027002 12/30/2015   Ac-228       5.22E-04     5.38E-04    l.96E-03   u AP         SBN       389027002 12/30/2015  Ag-108m      -3.28E-05    7.27E-05     2.23E-04   u AP         SBN       389027002 12/30/2015  Ag-llOm      -2.37E-04     l.83E-04    4.56E-04   u D-27

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         SBN       389027002 12/30/2015   Ba-140       2.15E-03     8.50E-03    2.81E-02 u AP         SBN       389027002 12/30/2015    Be-7        8.97E-02    7.42E-03     5.24E-03 AP         SBN       389027002 12/30/2015   Ce-141       8.0lE-04    6.69E-04     l.35E-03 u AP         SBN       389027002 12/30/2015   Ce-144       7.82E-04     5.32E-04    1.77E-03 u.
AP         SBN       389027002 12/30/2015   Co-57        5.74E-05    7.llE-05     2.37E-04 u AP         SBN       389027002 12/30/2015   Co-58       -1.35E-04     1.67E-04    4.74E-04 u AP         SBN       389027002 12/30/2015   Co-60        9.23E-05     1.47E-04    5.26E-04 u AP         SBN       389027002 12/30/2015    Cr-51      -4.31E-03    3.35E-03     9.48E-03 u AP         SBN       389027002 12/30/2015   Cs-134       l.17E-06    9.46E-05     3.13E-04 u AP.        SBN'      389027002 12/30/2015   Cs-137       3.07E-05    9.46E-05     3.28E-04 u AP         SBN       389027002 12/30/2015    Fe-59       1.95E-04     5.12E-04    1.75E-03 u AP         SBN       389027002 12/30/2015    1-131       3.36E-03     1.79E-02    5.29E-02 u AP         SBN       389027002 12/30/2015    K-40        3.22E-03     1.58E-03    2.80E-03 UI AP         SBN       389027002 12/30/2015   La-140      -l.52E-03    2.57E-03     6.75E-03 u AP         SBN       389027002 12/30/2015   Mn-54        3.74E-05     l.23E-04    4.17E-04 u AP         SBN       389027002 12/30/2015   Nb-95       -1.06E-05     1.32E-04    3.69E-04 u AP         SBN       389027002 12/30/2015   Ru-103      -2.12E-04    2.85E-04     8.37E-04 u AP         SBN       389027002 12/30/2015   Ru-106      -8.67E-05     l.20E-03    4.00E-03 u AP         SBN.      389027002 12/30/2015   Sb-124      -1.29E-04     5.23E-04    l.61E-03 u AP         SBN       389027002 12/30/2015   Sb-125       2.16E-04    2.86E-04     9.77E-04 u AP         SBN       389027002 12/30/2015    Se-75       9.80E-05     1.6&sect;E-04    5.71E-04 u AP         SBN       389027002 12/30/2015   Th-228      -8.35E-05     1.65E-04    5.50E-04 u AP         SBN       389027002 12/30/2015    Zn-65      -1.54E-04     3.llE-04    9.19E-04 u AP         SBN       389027002 12/30/2015    Zr-95       1.59E-04    2.59E-04     9.28E-04 u AP         DOW       389027003 12/30/2015   Ac-228      -5.22E-04     6.75E-04    2.17E-03 u AP         DOW       389027003 12/30/2015  Ag-108m       8.73E-05     l.56E-04    4.76E-04 u AP         DOW       389027003 12/30/2015  Ag-llOm       3.08E-04    2.38E-04     8.54E-04 u AP         DOW       389027003 12/30/2015   Ba-140      -4.63E-03     l.40E-02    4.18E-02 u AP         DOW       389027003 12/30/2015    Be-7        9.76E-02     8.54E-03    7.33E-03 AP         DOW       389027003 12/30/2015   Ce-141      -9.31E-05     5.44E-04    1.78E-03 u AP         DOW       389027003 12/30/2015   Ce-144       l.53E-03     1.00E-03    2.50E-03 u AP         DOW       389027003 12/30/2015   Co-57        3.48E-05     8.91E-05    3.00E-04 u AP         DOW       389027003 12/30/2015   Co-58       -1.28E-04    2.70E-04     7.59E-04 u AP         DOW       389027003 12/30/2015   Co-60       -5.61E-05     l.38E-04    4.16E-04 u AP         DOW       389027003 12/30/2015    Cr-51       8.85E-03     5.16E-03    l.74E-02 u AP         DOW       389027003 12/30/2015   Cs-134       1.60E-04     l.79E-04    6.34E-04 u AP         DOW       389027003 12/30/2015   Cs-137       6.20E-05     l.37E-04    4.62E-04 u AP         DOW       389027003 12/30/2015    Fe-59       7.28E-05     6.76E-04    2.26E-03 u AP         DOW       389027003 12/30/2015    1-131       l.09E-02     2.72E-02    9.29E-02 u AP         DOW       389027003 12/30/2015    K-40        2.17E-03     1.57E-03    3.72E-03 u AP         DOW       389027003 12/30/2015   La-140      -5.62E-03     3.76E-03    7.00E-03 u AP         DOW       389027003 12/30/2015   Mn-54        1.28E-04     l.56E-04    5.52E-04 u AP         DOW       389027003 12/30/2015   Nb-95       -3.74E-04     2.45E-04    5.81E-04 u AP         DOW       389027003 12/30/2015   Ru-103       8.0lE-04     4.52E-04    1.40E-03 u AP         DOW       389027003 12/30/2015   Ru-106       l.39E-03     l.41E-03. 4.86E-03 u AP         DOW       389027003 12/30/2015   Sb-124       2.41E-05     5.42E-04    1.82E-03 u AP         DOW       389027003 12/30/2015   Sb-125      -5.46E-04     4.18E-04    1.21E-03 u AP         DOW       389027003 12/30/2015    Se-75       2.16E-04     2.25E-04    7.46E-04 u AP         DOW       389027003 12/30/2015   Th-228       3.82E-04     2.28E-04    7.45E-04 u AP         DOW       389027003 12/30/2015    Zn-65      -8.0lE-04     4.70E-04    l.12E-03 u D-28

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         DOW       389027003 12/30/2015    Zr-95       4.24E-04    4.93E-04     l.69E-03  u AP         COL       389027004 12/30/2015   Ac-228       8.39E-05    4.20E-04     1.51E-03  u AP         COL       389027004 12/30/2015  Ag-108m      -8.33E-05    8.75E-05     2.49E-04  u AP         COL       389027004 12/30/2015  Ag-llOm      -1.66E-04     l.63E-04    4.19E-04  u AP         COL       389027004 12/30/2015   Ba-140       1.68E-02     l.OlE-02    3.55E-02  u AP         COL       389027004 12/30/2015    Be-7        8.39E-02    7.1 lE-03    2.79E-03 AP         COL       389027004 12/30/2015   Ce-141      -5.lOE-05    3.69E-04     l.23E-03  u AP         COL       389027004 12/30/2015   Ce-144      -2.92E-04    5.03E-04     1.63E-03  u AP         COL       389027004 12/30/2015   Co-57        3.98E-06    7.22E-05     2.45E-04  u AP         COL       389027004 12/30/2015   Co-58       -3.74E-04     1.84E-04    3.34E-04  u AP         COL       389027004 12/30/2015   Co-60        l.36E-04     1.20E-04    4.51E-04  u AP         COL       389027004 12/30/2015    Cr-51      -4.73E-03    3.16E-03     8.34E-03  u AP         COL       389027004 12/30/2015   Cs-134       l.24E-04     1.56E-04    4.83E-04  u AP         COL       389027004 12/30/2015   Cs-137       7.40E-05    8.92E-05     3.17E-04  u AP         COL       389027004 12/30/2015    Fe-59       2.09E-04    4.95E-04     1.75E-03  u AP         COL       389027004 12/30/2015    1-131      -7.37E-04     1.80E-02    5.79E-02  u AP         COL       389027004 12/30/2015    K-40        2.04E-03     l.72E-03    6.58E-Q3  u AP         COL       389027004 12/30/2015   La-140      -4.51E-03    3.93E-03     9.52E-03  u AP         COL       389027004 12/30/2015   Mn-54        l.85E-04     1.30E-04    4.40E-04  u AP         COL       389027004 12/30/2015   Nb-95       -3.80E-04    2.37E-04     5.75E-04  u AP        .COL       389027004 12/30/2015   Ru-103      -3.05E-04    2.47E-04     6.99E-04  u AP         COL       389027004 12/30/2015   Ru-106      -5.61E-04    8.58E-04     2.61E-03  u AP         COL       389027004 12/30/2015   Sb-124       9.56E-05    4.98E-04     1.69E-03  u AP         COL       389027004 12/30/2015   Sb-125       4.76E-04    3.04E-04     1.00E-03  u AP         COL       389027004 12/30/2015    Se-75       l.08E-04     l.74E-04    5.85E-04  u AP         COL       389027004 12/30/2015   Th-228      -2.57E-04     l.69E-04    4.93E-04  u AP         COL       389027004 12/30/2015   Zn-65        l.76E-04    2.30E-04     8.44E-04  u AP         COL       389027004 12/30/2015    Zr-95      -3.60E-04    3.67E-04     1.04E-03  u AP         ONS-1     389027005 12/30/2015   Ac-228       l.22E-04    6.26E-04     2.12E-03  u AP         ONS-1     389027005 12/30/2015  Ag-108m       7.61E-06     l.02E-04    3.53E-04  u AP         ONS-1     389027005 12/30/2015  Ag-llOm      -3.49E-04    2.69E-04     6.67E-04  u AP         ONS-1     389027005 12/30/2015   Ba-140       1.52E-02     1.35E-02    4.83E-02  u AP         ONS-1     389027005 12/30/2015    Be-7        8.18E-02    7.49E-03     8.91E-03 AP         ONS-1     389027005 12/30/2015   Ce-141       1.43E-05    3.38E-04     l. lOE-03 u AP         ONS-1     389027005 12/30/2015   Ce-144       4.84E-04    4.96E-04     1.69E-03  u AP         ONS-1     389027005 12/30/2015   Co-57       -4.18E-05    6.39E-05     l.99E-04  u AP         ONS-1     389027005 12/30/2015   Co-58        3.02E-04    2.39E-04     8.98E-04  u AP         ONS-1     389027005 12/30/2015   Co-60        3.49E-04    2.03E-04     8.02E-04  u AP         ONS-.1    389027005 12/30/2015    Cr-51      -l.35E-03    3.76E-03     1.19E-0:2 u AP         ONS-1     389027005 12/30/2015   Cs-134      -4.20E-04    2.13E-04     4.24E-04  u AP         ONS-1     389027005 12/30/2015   Cs-137      -l.32E-04     l.42E-04    3.83E-04  u AP         ONS-1     389027005 12/30/2015    Fe-59       l.95E-04    5.91E-04     2.05E-03  u AP         ONS-1     389027005 12/30/2015    1-131      -1.58E-02    2.23E-02     6.61E-02  u AP         ONS-1     389027005 12/30/2015    K-40        l.48E-03    2.49E-03     9.43E-03  u AP         ONS-1     389027005 12/30/2015   La-140       7.40E-03    4.61E-03     1.99E-02  u AP         ONS-1     389027005 12/30/2015   Mn-54       -3.94E-05     l.78E-04    5.75E-04  u AP         ONS-1     389027005 12/30/2015   Nb-95        4.30E-04    2.82E-04     l.05E-03  u AP         ONS-1     389027005 12/30/2015   Ru-103       4.68E-04    3.83E-04     l.37E-03  u AP         ONS-1     389027005 12/30/2015   Ru-106      -9.99E-04     l.34E-03    3.86E-03  u AP         ONS-1     389027005 12/30/2015   Sb-124      -3.19E-04    9.81E-04     3.05E-03  u D-29

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-1     389027005 12/30/2015   Sb-125       2.88E-04    3.29E-04     l.18E-03 u AP         ONS-1     389027005 12/30/2015    Se-75       5.87E-05    2.05E-04     6.95E-04 u AP         ONS-1     389027005 12/30/2015   Th-228      -4.67E-05    2.22E-04     6.43E-04 u AP         ONS-1     389027005 12/30/2015    Zn-65      -l.32E-04    6.22E-04     l.96E-03 u AP         ONS-1     389027005 12/30/2015    Zr-95      -l.65E-04    5.64E-04     l.83E-03 u AP         ONS-2     389027006 12/30/2015   Ac-228       5.49E-04    5.78E-04     2.07E-03 u AP         ONS-2     389027006 12/30/2015  Ag-108m       4.76E-05    9.35E-05     3.18E-04 u AP         ONS-2     389027006 12/30/2015  Ag-llOm      -3.15E-04     l.87E-04    4.40E-04 u AP         ONS-2     389027006 12/30/2015   Ba-140      -l.27E-02    9.81E-03     2.62E-02 u AP         ONS-2     389027006 12/30/2015    Be-7        8.97E-02    7.40E-03     5.27E-03 AP         ONS-2     389027006 12/30/2015   Ce-141       5.61E-04    7.14E-04     l.38E-03 u AP         ONS-2     389027006 12/30/2015   Ce-144      -2.30E-04    5.89E-04     l.87E-03 u AP         ONS-2     389027006 12/30/2015   Co-57        l.34E-04    7.63E-05     2.06E-04 u AP         ONS-2     389027006 12/30/2015   Co-58       -1.08E-04    2.05E-04     6.48E-04 u AP         ONS-2     389027006 12/30/2015   Co-60       -3.45E-05     l.78E-04    5.64E-04 u AP         ONS-2     389027006 12/30/2015    Cr-51      ~2.93E-03    3.36E-03     l.04E-02 u AP         ONS-2     389027006 12/30/2015   Cs-134       l.77E-04     l.36E-04    4.91E-04 u AP         ONS-2     389027006 12/30/2015   Cs-137      -l.OSE-04     l.llE-04    3.IOE-04 u AP         ONS-2     389027006 12/30/2015    Fe~59      -l.45E-03    8.05E-04     l.22E-03 u AP         ONS-2     389027006 12/30/2015    I-131       2.13E-02     l.97E-02    6.80E-02 u AP         ONS-2     389027006 12/30/2015    K-40        l.03E-03     l.SOE-03    2.66E-03 u AP         ONS-2     389027006 12/30/2015   La-140       6.55E-04    4.71E-03     l.61E-02 u AP         ONS-2     389027006 12/30/2015   Mn-54        2.95E-05     l.17E-04    4.02E-04 u AP         ONS-2     389027006 12/30/2015   Nb-95        3.67E-04    2.09E-04     7.55E-04 u AP         ONS-2     389027006 12/30/2015   Ru-103       l.54E-05    2.48E-04     8.17E-04 u AP         ONS-2     389027006 12/30/2015   Ru-106       l.llE-03     LllE-03     3.82E-03 u AP         ONS-2     389027006 12/30/2015   Sb-124       7.94E-04    5.IOE-04     2.04E-03 u AP         ONS-2     389027006 12/30/2015   Sb-125      -8.83E"05    2.79E-04     8.98E-04 u AP         ONS-2     389027006 12/30/2015    Se-75       l.65E-04     l.81E-04    6.29E-04 u AP         ONS-2     389027006 12/30/2015   Th-228      -8.27E-05     l.77E-04    5.69E-04 u AP         ONS-2     389027006 12/30/2015    Zn-65       l.87E-04    2.47E-04     8.90E-04 u AP         ONS-2     389027006 12/30/2015    Zr-95       l.75E-04    3.36E-04     l.18E-03 u AP         ONS-3     389027007 12/30/2015   Ac-228      -l.39E-04    4.32E-04     l.55E-03 u AP         ONS-3     389027007 12/30/2015  Ag-108m      -4.07E-05    9.92E-05     2.70E-04 u AP         ONS-3     389027007 12/30/2015  Ag-llOm      -2.48E-04     l.72E-04    4.22E-04 u AP         ONS-3     389027007 12/30/2015   Ba-140       6.27E-04     8.89E-03    2.90E-02 u AP         ONS-3     389027007 12/30/2015    Be-7        8.90E-02    7.IIE-03     4.69E-03 AP         ONS-3     389027007 12/30/2015   Ce-141       9.88E-05    4.58E-04     l.42E-03 u AP         ONS-3     389027007 12/30/2015   Ce-144       l.75E-04    4.99E-04     l.64E-03 u AP         ONS-3     389027007 12/30/2015    Co-57       l.76E-05     6.30E-05    2.07E-04 u AP         ONS-3     389027007 12/30/2015    Co-58       3.98E-05     l.80E-04    6.12E-04 u AP         ONS-3     389027007 12/30/2015    Co-60       4.45E-05     l.52E-04    5.08E-04 u AP         ONS-3     389027007 12/30/2015    Cr-51      -2.87E-03     3.55E-03    l.IOE-02 u AP         ONS-3     389027007 12/30/2015   Cs-134      -2.68E-05     l.15E-04    3.60E-04 u AP         ONS-3     389027007 12/30/2015   Cs-137      -5.87E-O~     8.66E-05    2.64E-04 u AP         ONS-3     389027007 12/30/2015    Fe-59      -5.39E-04     5.47E-04    l.47E-03 u AP         ONS-3     389027007 12/30/2015    I-131       7.00E-03     l.65E-02    5.62E-02 u AP         ONS-3     389027007 12/30/2015    K-40        4.27E-04     l.47E-03    6.04E-03 u AP         ONS-3     389027007 12/30/2015   La-140      -l.06E-04     3.l IE-03   l.03E-02 u AP         ONS-3     389027007 12/30/2015   Mn-54        l.51E-04     l.24E-04    4.48E-04 u D-30

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-3     389027007 12/30/2015    Nb-95       3.87E-05     l.68E-04    5.77E-04  u AP         ONS-3     389027007 12/30/2015    Ru-103      3.99E-04    2.74E-04     9.54E-04  u AP         ONS-3     389027007 12/30/2015    Ru-106       l.29E-03   8.58E-04     3.09E-03  u AP         ONS-3     389027007 12/30/2015    Sb-124      3.63E-06    2.78E-04     9.23E-04  u AP         ONS-3     389027007 12/30/2015    Sb-125     -5.68E-05    2.72E-04     8.76E-04  u AP         ONS-3     389027007 12/30/2015     Se-75     -l.76E-04     l.59E-04    4.80E-04  u AP         ONS-3     389027007 12/30/2015    Th-228       l.44E-04    l.72E-04    6.07E-04  u AP         ONS-3     389027007 12/30/2015    Zn-65       2.16E-04    3.24E-04     1.13E-03  u AP         ONS-3     389027007 12/30/2015     Zr-95     -4.98E-06    3.12E-04     l.04E-03  u AP         ONS-4     389027008 12/30/2015    Ac-228     -3.25E-04    5.llE-04     l.70E-03  u AP         ONS-4     389027008 12/30/2015  Ag-108m      -1.03E-04     l.05E-04    2.99E-04  u AP         ONS-4     389027008 12/30/2015  Ag-llOm      -6.57E-05     l.54E-04    4.65E-04  u AP         ONS-4     389027008 12/30/2015    Ba-140      3.59E-03    7.49E-03     2.64E-02  u AP         ONS-4     389027008 12/30/2015     Be-7       8.28E-02    6.93E-03     5.98E-03 AP         ONS-4     389027008 12/30/2015    Ce-141     -3.79E-04    4.93E-04     l.54E-03  u AP         ONS-4     389027008 12/30/2015    Ce-144      3.86E-04     5.95E-04    2.04E-03  u AP         ONS-4     389027008 12/30/2015    Co-57       3.17E-05     8.14E-05    2.76E-04  u AP         ONS-4     389027008 12/30/2015    Co-58       2.75E-06    2.0IE-04     6.60E-04  u AP         ONS-4     389027008 12/30/2015    Co-60      -7. l IE-05   l.62E-04    5.05E-04  u AP         ONS-4     389027008 12/30/2015     Cr-51      9.03E-03    4.80E-03     l.12E-02  u AP         ONS-4     389027008 12/30/2015    Cs-134      5.79E-05     l.17E-04    4.06E-04  u AP         ONS-4     389027008 12/30/2015    Cs-137      2.55E-05     l.20E-04    4.06E-04  u AP         ONS-4     389027008 12/30/2015     Fe-59     -6.38E-05     5.59E-04    l.85E-03  u AP         ONS-4     389027008 12/30/2015     I-131      2.48E-02    2.07E-02     7.02E-02  u AP         ONS-4     389027008 12/30/2015     K-40       2.0IE-03     l.33E-03    4.05E-03  u AP         ONS-4     389027008 12/30/2015    La-140     -2.98E-03     3.05E-03    6.88E-03  u AP         ONS-4     389027008 12/30/2015    Mn-54      -1.85E-04     l.61E-04    3.39E-04  u AP         ONS-4     389027008 12/30/2015    Nb-95       4.20E-05    2.15E-04     7.20E-04  u AP         ONS-4     389027008 12/30/2015    Ru-103       1.38E-04   2.96E-04     l.03E-03  u AP         ONS-4     389027008 12/30/2015    Ru-106       l.76E-03    l.12E-03    3.02E-03  u AP         ONS-4     389027008 12/30/2015    Sb-124       8.66E-04    7.35E-04    2.73E-03  u AP         ONS-4     389027008 12/30/2015    Sb-125       l.25E-04    3.37E-04    l.1 IE-03 u AP         ONS    389027008 12/30/2015     Se-75       l.53E-04    2.0IE-04    6.77E-04  u AP         ONS-4     389027008 12/30/2015    Th-228       9.15E-05    l.95E-04    6.53E-04  u AP         ONS-4     389027008 12/30/2015    Zn-65       -5.51E-05    2.88E-04    9.43E-04  u AP         ONS-4     389027008 12/30/2015     Zr-95       6.08E-04    3.40E-04    l.26E-03  u AP         ONS-5     389027009 12/30/2015    Ac-228       5.46E-04    6.75E-04    2.69E-03  u AP         ONS-5     389027009 12/30/2015   Ag-108m      -6.16E-05    l.15E-04    3.52E-04  u AP         ONS-5     389027009 12/30/2015   Ag-1 lOm      l.71E-04    2.62E-04    9.34E-04  u AP         ONS-5     389027009 12/30/2015    Ba-140      4.49E-03     l.21E-02    4.l IE-02 u AP         ONS-5     389027009 12/30/2015     Be-7        8.22E-02    8.85E-03    6.02E-03 AP         ONS-5     389027009 12/30/2015    Ce-141      -6.08E-04    6.72E-04    l.82E-03  u AP         ONS-5     389027009 12/30/2015    Ce-144      -9.33E-04    7.llE-04    2.03E-03  u AP         ONS-5     389027009 12/30/2015    Co-57       -1.09E-04    8.87E-05    2.59E-04  u AP         ONS-5     389027009 12/30/2015    Co--58      -l.17E-04    2.06E-04    6.18E-04  u AP         ONS-5     389027009 12/30/2015    Co-60        l.57E-04    2.03E-04    7.51E-04  u AP         ONS-5     389027009 12/30/2015     Cr-51       4.29E-03    5.42E-03    l.89E-02  u AP         ONS-5     389027009 12/30/2015    Cs-134       2.27E-04    l.96E-04    7.18E-04  u AP         ONS-5     389027009 12/30/2015    Cs-137       5.99E-05    1.34E-04    4.57E-04  u AP         ONS-5     389027009 12/30/2015     Fe-59      -9.84E-04    7.49E-04    1.54E-03  u D-31

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION        LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-5     389027009  12/30/2015    I-131       9.70E-03    2.59E-02     8.87E-02  u AP         ONS-5     389027009  12/30/2015    K-40       -2.55E-04    2.15E-03     8.06E-03  u AP         ONS-5     389027009  12/30/2015   La-140       l.34E-04    5.79E-04     2.69E-03  u AP         ONS-5      389027009 12/30/2015   Mn-54       -8.9IE~o5     l.94E-04    6.04E-04  u AP         ONS-5      389027009 12/30/2015   Nb-95        5.06E-04    2.53E-04     9.81E-04  u AP         ONS-5      389027009 12/30/2015   Ru-103      -l.36E-04    3.45E-04     1.07E-03  u AP         ONS-5     389027009  12/30/2015   Ru-106      -l.72E-03     1.50E-03    3.SOE-03  u AP         ONS-5     389027009  12/30/2015   Sb-124      -l.18E-03     1.06E-03    2.51E-03  u AP         ONS-5     389027009  12/30/2015   Sb-125      -l.18E-04    3.46E-04     1.lOE-03  u AP         ONS-5     389027009  12/30/2015    Se-75      -2.32E-04    2.09E-04     6.28E-04  u AP         ONS-5      389027009 12/30/2015   Th-228       6.17E-06    2.47E-04     7.78E-04  u AP        ONS-5      389027009  12/30/2015   Zn-65       -4.00E-05    3.44E-04     l.09E-03  u AP         ONS-5     389027009  12/30/2015    Zr-95       8.69E-04    5.50E-04     2.05E-03  u AP         ONS-6     ,389027010 12/30/2015   Ac-228       6.12E-04    5.83E-04     2.09E-03  u AP         ONS-6     389027010  12/30/2015  Ag-108m      -1.23E-04     l.07E-04    2.89E-04  u AP         ONS-6     389027010  12/30/2015  Ag-llOm       4,09E-05    2.04E-04     6.97E-04  u AP         ONS-6     389027010  12/30/2015   Ba-140      -4.87E-03     l.16E-02    3.68E-02  u AP        ONS-6      389027010  12/30/2015    Be-7        9.75E-02    7.81E-03     6.26E-03 AP        ONS-6      389027010  12/30/2015   Ce-141      -3.89E-05    3.94E-04     l.26E-03  u AP         ONS-6     389027010  12/30/2015   Ce-144       8.93E-04    6.60E-04     l.66E-03  u AP         ONS-6     389027010  12/30/2015   Co-57       -6.19E-05    7.SOE-05     2.36E-04  u AP         ONS-6     389027010  12/30/2015   Co-58        1.58E-04    2.09E-04     6.84E-04  u AP         ONS-6     389027010  12/30/2015   Co-60        5.61E-05     l.llE-04    4.0SE-04  u AP        ONS-6      389027010  12/30/2015    Cr-51      -2.95E-03    4.26E-03     l.31E-02  u AP        ONS-6      389027010  12/30/2015   Cs-134       1.07E-04     1.25E-04    4.45E-04  u AP        ONS-6      389027010  12/30/2015   Cs-137       8.16E-05     1.02E-04    3.64E-04  u AP         ONS-6     389027010  12/30/2015    Fe-59      -l.15E-03    6.02E-04     8.65E-04  u AP         ONS-6     389027010  12/30/2bl5    I-131       3.37E-03    2.13E-02     7.00E-02  u AP         ONS-6     389027010  12/30/2015    K-40       -2.97E-04     1.79E-03    6.63E-03  u AP        ONS-6      389027010  12/30/2015   La-140       5.03E-03    5.79E-03     2.lOE-02  u AP        ONS-6      389027010  12/30/2015   Mn-54       -l.73E-04     1.51E-04    4.20E-04  u AP        ONS-6      389027010  12/30/2015   Nb-95        3.16E-04    2.17E-04     7.89E-04  u AP         ONS-6     389027010  12/30/2015   Ru-103       6.88E-04    3.53E-04     l.23E-03  u AP         ONS-6     389027010  12/30/2015   Ru-106       3.00E-04     l.20E-03    4.03E-03  u
 .AP         ONS-6     389027010  12/30/2015   Sb-124      -3.0lE-04    7.87E-04     2.39E-03  u AP        ONS-6      389027010  12/30/2015   Sb-125       3.39E-04    3.04E-04     l.05E-03  u AP        ONS-6      389027010  12/30/2015    Se-75      -9.34E-05     l.68E-04    5.32E-04  u AP        ONS-6      389027010  12/30/2015   Th-228      -4.40E-04    2.0SE-04     5.53E-04  u AP         ONS-6     389027010  12/30/2015   Zn-65        1.78E-04    3.41E-04     l.19E-03  u AP         ONS-6     389027010  12/30/2015    Zr-95       7.07E-04    3.95E-04     l.45E-03  u AP        NBF        386425001  11/25/2015   BETA         2.46E-02     1.48E-03    l. lOE-03 AP         SBN       386425002  11/25/2015   BETA         2.lOE-02     1.35E-03    l.06E-03 AP        DOW        386425003  11/25/2015   BETA         2.20E-02     l.38E-03    1.05E-03 AP        COL        386425004  11/25/2015   BETA         2.16E-02     l.40E-03    l.lOE-03 AP         ONS-1     386425005  11/25/2015   BETA         2.24E-02     l.45E-03    1.14E-03 AP         ONS-2     386425006  11/25/2015   BETA         2.30E-02     1.42E-03    l.O'?E-03 AP        ONS-3      386425007  11/25/2015   BETA         2.07E-02     l.38E-03    l.12E-03 AP        ONS-4      386425008  11/25/2015   BETA         1.91E-02     1.32E-03    1.lOE-03 AP        ONS-5      386425009  11/25/2015   BETA         l.86E-02 . 1.32E-03    l.13E-03 AP         ONS-6     386425010  11/25/2015   BETA         2.28E-02     l.44E-03    l.1 lE-03 D-32

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                      CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN         DATE     NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         NBF       386774001    12/2/2015   BETA         2.57E-02     l.52E-03    1.IOE-03 AP         SBN       386774002    12/2/2015   BETA         2.21E-02     l.45E-03    1.15E-03 AP         DOW       386774003    12/2/2015   BETA         2.19E-02     l.43E-03    1.12E-03 AP         COL       386774004    12/2/2015   BETA         2.17E-02     l.39E-03    1.0SE-03 AP         ONS-1     386774005    12/2/2015   BETA         2.65E-02     l.53E-03    l.07E-03 AP         ONS-2     386774006    12/2/2015   BETA         2.26E-02     1.45E-03    l.12E-03 AP         ONS-3     386774007    12/2/2015   BETA         2.61E-02     l.51E-03    l.07E-03 AP         ONS-4     386774008    12/2/2015   BETA         2.69E-02     1.53E-03    l.06E-03 AP         ONS-5     386774009    12/2/2015   BETA         2.49E-02     l.49E-03    1.0SE-03 AP         ONS-6     386774010    12/2/2015   BETA         2.61E-02     l.52E-03    l.07E-03 AP         NBF       387341001    12/9/2015   BETA         4.90E-02    2.llE-03     l.12E-03 AP         SBN       387341002    12/9/2015   BETA         4.51E-02    2.0IE-03     l.12E-03 AP        DOW        387341003    12/9/2015   BETA         4.34E-02    2.00E-03     1.15E-03 AP         COL       387341004    12/9/2015   BETA         4.46E-02    2.0lE-03     1.12E-03 AP         ONS-1     387341005    12/9/2015   BETA         4.30E-02     l.96E-03    l.1 IE-03 AP         ONS-2     387341006    12/9/2015   BETA         4.49E-02    2.05E-03     l.16E-03 AP         ONS-3     387341007    12/9/2015   BETA         4.46E-02     l.96E-03    l.07E-03 AP         ONS-4     387341008    12/9/2015   BETA         4.78E-02    2.06E-03     1.IOE-03 AP         ONS-5     387341009    12/9/2015   BETA         4.37E-02    2.03E-03     l.18E-03 AP         ONS-6     387341010    12/9/2015   BETA         4.82E-02    2.12E-03     l.15E-03 AP         NBF       387887001   12/16/2015   BETA         3.18E-02     l.72E-03    l.19E-03 AP         SBN       387887002   12/16/2015   BETA         3.19E-02     l.76E-03    l.25E-03 AP         DOW       387887003   12/16/2015   BETA         3.17E-02     l.73E-03    1.22E-03 AP-       COL        387887004   12/16/2015   BETA         2.91E-02     l.63E-03    l.17E-03 AP         ONS-1     387887005   12/16/2015   BETA         3.23E-02     l.71E-03    1.16E-03 AP         ONS-2     387887006   12/16/2015   BETA         3.09E-02     l.72E-03    l.23E-03 AP         ONS-3     387887007   12/16/2015   BETA         3.16E-02     l.69E-03    l.17E-03 AP         ONS-4     387887008   12/16/2015   BETA         2.99E-02     l.63E-03    l.14E-03 AP         ONS-5     387887009   12/16/2015   BETA         3.34E-02     l.74E-03    l.16E-03 AP         ONS-6     387887010   12/16/2015   BETA         3.09E-02     l.71E-03    l.22E-03 AP        NBF        388145001   12/23/2015   BETA         2.60E-02     l.52E-03    l.1 IE-03 AP         SBN       388145002   12/23/2015   BETA         2.69E-02     l.57E-03    1.14E-03 AP         DOW       388145003   12/23/2015   BETA         2.91E-02     l.62E-03    l.12E-03 AP         COL       388145004   12/23/2015   BETA         2.83E-02     l.61E-03    1.14E-03 AP         ONS-1     388145005   12/23/2015   BETA         2.78E-02     l.57E-03    1.1 IE-03 AP        ONS-2      388145006   12/23/2015   BETA         3.12E-02     l.70E-03    l.15E-03 AP        ONS-3      388145007   12/23/2015   BETA         2.88E-02     l.62E-03    l.14E-03 AP        ONS-4      388145008   12/23/2015   BETA         3.02E-02     l.65E-03    l.12E-03 AP         ONS-5     388145009   12/23/2015   BETA         3.33E-02     l.73E-03    l.12E-03 AP         ONS-6     388145010   12/23/2015   BETA         3.02E-02     l.67E-03    l.15E-03 AP        NBF        388629001   12/30/2015   BETA         l.99E-02     l.35E-03    l.18E-03 AP         SBN       388629002   12/30/2015   BETA         2.02E-02     l.35E-03    l.17E-03 AP        DOW        388629003   12/30/2015   BETA         2.09E-02     l.39E-03    1.20E-03 AP         COL       388629004   12/30/2015   BETA         l.92E-02     l.29E-03    l.13E-03 AP         ONS-1     388629005   12/30/2015   BETA         2.59E-02     l.76E-03    l.56E-03 AP         ONS-2     388629006   12/30/2015   BETA         2.03E-02     l.39E-03    l.24E-03 AP        ONS-3      388629007   12/30/2015   BETA         2.04E-02     l.30E-03    1.0SE-03 AP        ONS-4      388629008   12/30/2015   BETA         2.14E-02     l.36E-03    l.13E-03 AP        ONS-5      388629009   12/30/2015   BETA         2.14E-02     l.37E-03    l.14E-03 AP        ONS-6      388629010
* 12/30/2015   BETA         2.07E-02     1.36E-03    l.17E-03 D-33

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
CF        NBF        364598012  117/2015     1-131       6.06E-03    8.06E-03     2.83E-02 u CF         SBN       364598013  1/7/2015     1-131      -5.0lE-03    4.77E-03     1.09E-02 u CF         DOW       364598014  117/2015     1-131       3.98E-03    4.18E-03     1.65E-02 u CF         COL       364598015  1/7/2015     1-131      -9.90E-03    6.88E-03     1.48E-02 u CF         ONS-1     364598016  117/2015     1-131       5.26E-03    5.87E-03     2.09E-02 u CF         ONS-2     364598017  117/2015     1-131      -3.86E-03    5.91E-03     1.71E-02 u CF         ONS-3     364598018  117/2015     1-131      -l.92E-03    4.98E-03     l.53E-02 u CF         ONS-4     364598019  117/2015     1-131       7.46E-03    4.89E-03     l.86E-02 u CF         ONS-5     364598020  117/2015     1-131      -l.86E-03    2.81E-03     6.96E-03 u CF         ONS-6     364598021  117/2015     I-131       7.61E-03    7.94E-03     2.89E-02 u CF        NBF        365202012 1114/2015     1-131      -6.72E-03    5.09E-03     l.15E-02 u CF         SBN       365202013 1/14/2015     1-131      -9.74E-03    7.35E-03     l.80E-02 u CF        DOW        365202014 1/14/2015     1-131      -5.52E-03    5.48E-03     1.43E-02 u CF         COL       365202015 1/14/2015     1-131       5.39E-03    6.00E-03     2.12E-02 u CF         ONS-1     365202016 1/14/2015     1-131      -2.05E-03    4.56E-03     l.36E-02 u CF         ONS-2     365202017 1/14/2015     1-131      -l.57E-03    4.89E-03     l.53E-02 u CF         ONS-3     365202018 1/14/2015     1-131       2.66E-03    5.81E-03     1.99E-02 u CF         ONS-4     365202019 1/14/2015     1-131       3.04E-03    6.30E-03     2.18E-02 u CF         ONS-5     365202020 1/14/2015     1-131      -4.35E-03    5.49E-03     l.57E-02 u CF         ONS-6     365202021 1/14/2015     I-131      -l.03E-03    4.18E-03     l.32E-02 u CF        NBF        365672012 1/21/2015     I-131       2.88E-03    4.65E-03     l.59E-02 u CF         SBN       365672013 1/21/2015     I-131       2.16E-03    3.75E-03     l.29E-02 u CF         DOW       365672014 1/21/2015     I-131       l.92E-03    4.IOE-03     l.39E-02 u CF         COL       365672015 1/21/2015     1-131       3.64E-03    4.24E-03     1.52E-02 u CF         ONS-1     365672016 1/21/2015     1-131      -l.61E-03    3.63E-03     l.IOE-02 u CF         ONS-2     365672017 1/21/2015     1-131      -3.95E-03    3.44E-03     9.0lE-03 u CF         ONS-3     365672018 1/21/2015     I-131       3.74E-03    3.82E-03     1.23E-02 u CF         ONS-4     365672019 1/21/2015     1-131       4.56E-04    3.71E-03     1.09E-02 u CF         ONS-5     365672020 1/2112015     1-131       1.61E-02    4.53E-03     9.73E-03 UI CF         ONS-6     365672021 1/21/2015     I-131       4.34E-03    2.71E-03     9.99E-03 u CF        NBF        366148012 1/28/2015     I-131      -6.26E-03    7.56E-03     2'.16E-02 u CF         SBN       366148013 1/28/2015     I-131       2.09E-03    5.14E-03     l.82E-02 u CF         DOW       366148014 1/28/2015     I-131       3.27E-03    8.03E-03     2.73E-02 u CF         COL       366148015 1/28/2015     I-131       9.83E-04    5.33E-03     l.76E-02 u CF         ONS-1     366148016 1/28/2015     1-131      -7.28E-03    6.95E-03     1.88E-02 u CF         ONS-2     366148017 1/28/2015     1-131       1.42E-04    5.35E-03     1.74E-02 u CF         ONS-3     366148018 1/28/2015     1-131      -6.90E-03    5.52E-03     l.47E-02 u CF         ONS-4     366148019 1/28/2015     1-131       l.09E-03    4.lOE-03     l.39E-02 u CF         ONS-5     366148020 1/28/2015     1-131      -3.58E-03    6.37E-03     l.91E-02 u CF         ONS-6     366148021 1/28/2015     1-131      -9.94E-03    7.05E-03     l.63E-02 u CF        NBF        366679012 2/4/2015      I-131       1.24E-04    6.87E-03     2.24E-02 u CF        SBN        366679013 2/4/2015      1-131      -l.34E-03    6.55E-03     2.04E-02 u CF        DOW        366679014 2/4/2015      I-131       2.63E-03    4.42E-03     1.57E-02 u CF         COL       366679015 2/4/2015      I-131       l.24E-04    6.37E-03     2.07E-02 u CF         ONS-1     366679016 2/4/2015      1-131       2.58E-03    5.80E-03*    2.04E-02 u CF         ONS-2     366679017 2/4/2015      I-131      -2.43E-03    5.40E-03     1.61E-02 u CF         ONS-3     366679018 2/4/2015      1-131      -l.59E-03    6.91E-03     2.22E-02 u CF         ONS-4     366679019 2/4/2015      1-131       3.02E-03    7.87E-03     2.64E-02 u CF         ONS-5     366679020 2/4/2015      1-131       9.15E-03    6.41E-03     2.40E-02 u CF         ONS-6     366679021 2/4/2015      1-131       4.15E-03    4.36E-03     l.61E-02 u D-34

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)     (pCi/m3)   (pCi/m3)
CF         NBF       367176012 2/1112015     1-131      -3.65E-03     5.57E-03    l.60E-02 u CF         SBN       367176013 2/11/2015     1-131       1.88E-03     5.05E-03    l.71E-02 u CF         DOW       367176014 2/1112015     1-131      -5.49E-03     5.16E-03    l.42E-02 u CF         COL       367176015 2/1112015     1-131       4.95E-03     6.44E-03    2.32E-02 u CF         ONS-1     367176016 2/1112015     1-131      -4.04E-03    *5.34E-03    l.45E-02 u CF         ONS-2     367176017 2/1112015     1-131      -2.21E-03     7.59E-03    2.31E-02 u CF         ONS-3     367176018 2/1112015     1-131       l.93E-03     5.6IE-03    1.94E-02 u CF         ONS-4     367176019 211112015     1-131      -1.94E-03     6.32E-03    l.98E-02 u CF         ONS-5     367176020 2/11/2015     1-131      -4.47E-03     5.0IE-03    1.47E-02 u CF         ONS-6     367176021 2/1112015     I-131       7.25E-03     5.50E-03    2.03E-02 u CF         NBF       367474012 2118/2015     1-131       6.04E-03     4.45E-03    l.70E-02 u CF         SBN       367474013 2/18/2015     1-131       8.44E-03     6.00E-03    2.26E-02 u CF         DOW       367474014 2/18/2015     1-131      -4.63E-03     6.48E-03    l.81E-02 u CF         COL       367474015 2/18/2015     1-131      -6.56E-03     5.06E-03    1.20E-02 u CF         ONS-1     367474016 2118/2015     I-131       l.89E-04     8.38E-03    2.82E-02 u CF         ONS-2     367474017 2118/2015     I-131       3.56E-03     6.54E-03    2.25E-02 u CF         ONS-3     367474018 2118/2015     I-131      -1.03E-02     7.79E-03    l.62E-02 u CF         ONS-4     367474019 2118/2015     I-131      -5.65E-05     4.96E-03    l.63E-02 u CF         ONS-5     367474020 2/18/2015     I-131      -1.14E-02     6.24E-03    l.30E-02 u CF         ONS-6     367474021 2/18/2015     I-131      -4.57E-03     5.16E-03    1.41E-02 u CF         NBF       367835012 2/2512015     I-131      -9.89E-03     5.58E-03    l.08E-02 u CF         SBN       367835013 2/25/2015     I-131       1.93E-03     5.14E-03    1.81E-02 u CF         DOW       367835014 2/25/2015     I-131      -1.58E-03      5.22E~03   1.63E-02 u CF         COL       367835015 2/25/2015     I-131       6.37E-03     5.0IE-03    1.96E-02 u CF         ONS-1     367835016 2/2512015     I-131      -4.61E-03     5.82E-03    1.67E-02 u CF         ONS-2     367835017 2/25/2015     1-131      -5.82E-04     4.00E-03    1.29E-02 u CF         ONS-3     367835018 2/2512015     I-131      -2.43E-04     5.18E-03    1.69E-02 u CF         ONS-4     367835019 2/25/2015     1-131       6.80E-04     3.49E-03    l.18E-02 u CF         ONS-5     367835020 2/25/2015     I-131       7.98E-03     5.43E-03    1.96E-02 u CF         ONS-6     367835021 2/25/2015     I-131      -1.00E-02     5.93E-03    l.36E-02 u CF         NBF       368255012 2/28/2015     I-131       1.59E-03     6.66E-03    2.26E-02 u CF         SBN       368255013 2/2812015     I-131      -1.79E-03     5.0IE-03    1.59E-02 u CF         DOW       368255014 2/28/2015     I-131       l.02E-02     4.20E-03    l.76E-02 u CF         COL       368255015 2/28/2015     I-131      -l.33E-02     8.69E-03    2.09E-02 u CF         ONS-1     368255016  3/112015     I-131      -2.64E-03     5.88E-03    1.74E-02 u CF         ONS-2     368255017  3/112015     1-131      -8.26E-03     7.84E-03    l.81E-02 u CF         ONS-3     368255018  3/1/2015     I-131       l.02E-02     7.82E-03    2.90E-02 u CF         ONS-4     368255019  3/1/2015     1-131       8.54E-03     6.59E-03    2.46E-02 u CF         ONS-5     368255020  311/2015     I-131      -3.32E-04     4.15E-03    1.32E-02 u CF         ONS-6     368255021  3/112015     I-131      -2.98E-03     4.24E-03    1.22E-02 u CF         NBF       368784012  3/712015     1-131       3.50E-03     7.44E-03    2.56E-02 u CF         SBN       368784013  31712015     I-131      -4.87E-03     6.lOE-03    1.68E-02 u CF         DOW       368784014  3/712015     1-131       1.89E-04     4.32E-03    1.45E-02 u CF         COL       368784015  3/712015     I-131       l.78E-03     5.56E-03    l.92E-02 u CF         ONS-1     368784016  3/8/2015     I-131      -7.68E-03     5.34E-03    1.21E-02 u CF         ONS-2     368784017  3/8/2015     1-131      -6.81E-03     5.77E-03    1.43E-02 u CF         ONS-3     368784018  3/8/2015     1-131       3.50E-03     6.56E-03    2.29E-02 u CF         ONS-4     368784019  3/8/2015     I-131       4.04E-03     6.22E-03    2.26E-02 u CF         ONS-5     368784020  3/8/2015     I-131      -1.17E-02     6.07E-03    l.05E-02 u CF         ONS-6     368784021  3/8/2015     1-131      -1.55E-03     6.94E-03    2.22E-02 u D-35

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       369215012  3/14/2015     I-131      -l.45E-03
* 4.23E-03     l.28E-02 u CF         SBN       369215013  3/14/2015     I-131      -6.33E-03    4.53E-03     l.05E-02 u CF         DOW       369215014  3/14/2015     I-131       l.16E-04    5.53E-03     l.83E-02 u CF         COL       369215015  3/14/2015     I-131       5.46E-05    2.95E-03     l.OOE-02 u CF         ONS-1     369215016  3/14/2015     I-131      -3.96E-03    6.93E-03     2.00E-02 u CF         ONS-2     369215017  3/14/2015     I-131      -1.62E-03    4.71E-03     l.47E-02 u CF         ONS-3     369215018  3/15/2015     I-131       9.60E-03    6.61E-03     2.40E-02 u CF         ONS-4     369215019  3/15/2015     I-131       2.74E-04    4.94E-03     l.61E-02 u CF         ONS-5     369215020  3/15/2015     I-131      -5.20E-03    4.57E-03     l.17E-02 u CF         ONS-6     369215021  3/15/2015     I-131      -5.94E-03    6.59E-03     l.88E-02 u CF         NBF       369628012  3/21/2015     I-131       l.78E-03    4.24E-03     l.51E-02 u CF         SBN       369628013  3/21/2015     I-131      -5.37E-04    6.41E-03     2.14E-02 u CF         DOW       369628014  3/21/2015     I-131       l.42E-04    4.97E-03     l.66E-02 u CF         COL       369628015  3/21/2015     I-131      -5.31E-04    6.09E-03     l.94E-02 u CF         ONS-1     369628016  3/21/2015     I-131      -l.60E-03    5.59E-03     l.70E-02 u CF         ONS-2     369628017  3/21/2015     I-131      -4.72E-03    4.81E-03     l.26E-02 u CF         ONS-3     369628018  3/22/2015     I-131       2.96E-03    4.04E-03     l.48E-02 u CF         ONS-4     369628019  3/22/2015     I-131       3.68E-03     5.48E-03    l.90E-02 u CF         ONS-5     369628020  3/22/2015     I-131       9.36E-03    4.95E-03     l.86E-02 u CF         ONS-6     369628021  3/22/2015     I-131       l.13E-02    7.73E-03     2.85E-02 u CF         NBF       370078012  3/28/2015     I-131      -2.44E-04    4.89E-03     l.64E-02 u CF         SBN       370078013  3/28/2015     I-131       l.84E-03     6.19E-03    2.12E-02 u CF         DOW       370078014  3/28/2015     I-131      -l.21E-03     6.41E-03    2.05E-02 u CF         COL       370078015  3/28/2015     I-131      -l.51E-03     6.16E-03    l.94E-02 u CF         ONS-1     370078016  3/28/2015     I-131      -5.64E-03     l.20E-02    3.63E-02 u CF         ONS-2     370078017  3/28/2015     I-131      -2.38E-03     5.30E-03    l.53E-02 u CF         ONS-3     370078018  3/29/2015     I-131       l.OOE-02     6.52E-03    2.44E-02 u CF         ONS-4     370078019  3/29/2015     I-131       5.18E-03     7.73E-03    2.70E-02 u CF         ONS-5     370078020  3/29/2015     I-131      -l.67E-02     8.65E-03    l.83E-02 u CF         ONS-6     370078021  3/29/2015     I-131       l.42E-03     5.llE-03    l.79E-02 u CF         NBF       370818012 . 4/4/2015     I-131       7.62E-04    4.70E-03     l.56E-02 u CF         SBN       370818013   4/4/2015     I-131       6.90E-03     5.81E-03    2.15E-02 u CF         DOW       370818014   4/4/2015     I-131      -8.12E-03     7.81E-03    l.98E-02 u CF         COL       370818015   4/4/2015     I-111       l.82E-03     6.60E-03    2.24E-02 u CF         ONS-1     370818016   4/5/2015     I-131      -6.19E-03    4.58E-03     l.OOE-02 u CF         ONS-2     370818017   4/5/2015     I-131      -6.79E-03     6.23E~03    l.63E-02 u CF         ONS-3     370818018   4/5/2015     I-131      -3.33E-03     6.95E-03    l.80E-02 u CF         ONS-4     370818019   4/5/2015     I-131       3.18E-03     5.58E-03    l.97E-02 u CF         ONS-5     370818020   4/5/2015     I-131      -l.66E-03     4.29E-03    l.36E-02 u CF         ONS-6     370818021   4/5/2015     I-131       2.65E-03     6.0lE-03    2.lOE-02 u CF         NBF       371275012  4/15/2015     I-131      -3.33E-03     4.71E-03    l.33E-02 u CF         SBN       371275013  4/15/2015     I-131      -l.80E-03     4.92E-03    l.50E-02 u CF         DOW       371275014  4/15/2015     I-131      -3.93E-03     6.07E-03    l.81E-02 u CF         COL       371275015  4/15/2015     I-131      -6.13E-03     6.35E-03    l.76E-02 u CF         ONS-1     371275016  4/15/2015     I-131       l.OlE-03     5.19E-03    l.77E-02 u CF         ONS-2     371275017  4/15/2015     I-131      -6.77E-03     5.17E-03    l.18E-02 u CF         ONS-3     371275018  4/15/2015     I-131       l.06E-03     7.03E-03    2.39E-02 u CF         ONS-4     371275019  4/15/2015     I-131      -5.17E-03     5.67E-03    l.38E-02 u CF         ONS-5     371275020  4/15/2015     I-131       2.37E-03     4.98E-03    l.76E-02 u CF         ONS-6     371275021  4/15/2015     I-131      -3.78E-03     5.19E-03    l.44E-02 u D-36

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
CF         NBF       371765012 4/22/2015     I-131       l.72E-03    6.56E-03     2.23E-02 u CF         SBN       371765013 4/22/2015     I-131      -8.61E-03    5.69E-03     l.03E-02 u CF         DOW       371765014 4/22/2015     I-131       6.35E-03    6.14E-03     2.3IE-02 u CF         COL       371765015 4/22/2015     I-131      -3.2IE-03    6.90E-03     2.05E-02 u CF         ONS-1     371765016 4/22/2015     I-131       2.54E-03    5.87E-03     2.05E-02 u CF         ONS-2     371765017 4/22/2015     I-131      -4.68E-04    6.84E-03     l.9IE-02 u CF         ONS-3     371765018 4/22/2015     I-131       3.99E-03    3.98E-03     l.46E-02 u CF         ONS-4     371765019 4/22/2015     I-131      -3.3IE-03    5.60E-03     l.73E-02 u CF         ONS-5     371765020 4/22/2015     I-131      -l.56E-03    7.68E-03     2.46E-02 u CF         ONS-6     371765021 4/22/2015     I-131       7.0IE-03    5.78E-03     2.21E-02 u CF         NBF       372180012 4/29/2015     I-131       3.82E-03    4.53E-03     l.62E-02 u CF         SBN       372180013 4/29/2015     1-131      -l.99E-03    3.36E-03     9.94E-03 u CF         DOW       372180014 4/29/2015     1-131      -6.92E-03    4.05E-03     9.29E-03 u CF         COL       372180015 4/29/2015     1-131      -5.64E-03    4.61E-03     l.31E-02 u CF         ONS-1     372180016 4/29/2015     I-131      -2.99E-03    4.86E-03     l.49E-02 u CF         ONS-2     372180017 4/29/2015     I-131       2.06E-03    4.85E-03     1.49E-02 u CF         ONS-3     372180018 4/29/2015     I-131       2.74E-03    3.42E-03     l.17E-02 u CF         ONS-4     372180019 4/29/2015     I-131      -3.77E-03    3.69E-03     l.OIE-02 u CF         ONS-5     372180020 4/29/2015     I-131       3.42E-03    6.31E-03     2.18E-02 u CF         ONS-6     372180021 4/29/2015     1-131      -4.26E-03    2.92E-03     6.32E-03 u CF        NBF        372743012  5/6/2015     1-131      -2.36E-03    4.86E-03     l.45E-02 u CF         SBN       372743013  5/6/2015     I-131       2.00E-03    7.69E-03     2.60E-02 u CF         DOW       372743014  5/6/2015     I-131       6.18E-04    3.62E-03     l.27E-02 u CF         COL       372743015  5/6/2015     I-131       4.74E-03    3.79E-03     l.62E-02 u CF         ONS-1     372743016  5/6/2015     I-131       6.21E-03    4.86E-03     l.92E-02 u CF         ONS-2     372743017  5/6/2015     I-131      -1.35E-03    6.59E-03     2.05E-02 u CF         ONS-3     372743018  5/6/2015     1-131       6.60E-04    4.42E-03     l.52E-02 u CF         ONS-4     372743019  5/6/2015     I-131      -l.18E-02    7.33E-03     l.61E-02 u CF         ONS-5     372743020  5/6/2015     I-131       7.29E-04    5.24E-03     l.76E-02 u CF         ONS-6     372743021  5/6/2015     I-131       2.32E-03    5.06E-03     l.73E-02 u CF        NBF        373202012 5113/2015     I-131      -7.99E-03    5.85E-03     l.40E-02 u CF         SBN       373202013 5/13/2015     1-131       2.36E-03    4.35E-03     l.62E-02 u CF         DOW       373202014 5/13/2015     I-131      -6.33E-04    2.50E-03     7.66E-03 u CF         COL       373202015 5113/2015     1-131       9.24E-03    5.66E-03     2.07E-02 u CF         ONS-1     373202016 5113/2015     1-131       7.49E-03    6.23E-03     2.31E-02 u CF         ONS-2     373202017 5/13/2015     I-131      -2.40E-03    3.34E-03     9.32E-03 u CF         ONS-3     373202018 5/13/2015     I-131      -2.79E-03    4.20E-03     l.19E-02 u CF         ONS-4     373202019 5113/2015     I-131       3.04E-03    3.15E-03     1.23E-02 u CF         ONS-5     373202020 5113/2015     1-131       l.95E-03    4.22E-03     l.52E-02 u CF         ONS-6     373202021 5113/2015     I-131       l.19E-03    3.23E-03     l.15E-02 u CF        NBF        373655012 5/20/2015     I-131      -3.89E-03    4.48E-03     l.13E-02 u CF         SBN       373655013 5/20/2015     I-131       5.04E-03    3.75E-03     l.66E-02 u CF         DOW       373655014 5/20/2015     I-131      -l.35E-03    6.SOE-03     2.21E-02 u CF         COL       373655015 5/20/2015     I-131      -6.05E-05    5.72E-03     l.88E-02 u CF         ONS-1     373655016 5/20/2015     1-131       2.74E-03    4.98E-03     l.78E-02 u CF         ONS-2     373655017 5/20/2015     I-131       8.13E-03    5.43E-03     2.06E-02 u CF         ONS-3     373655018 5/20/2015     I-131      -4.79E-03    5.72E-03     l.60E-02 u CF         ONS-4     373655019 5/20/2015     I-131      -l.03E-02    7.77E-03     l.90E-02 u CF         ONS-5     373655020 5/20/2015     I-131       4.39E-03    5.92E-03     2.12E-02 u CF         ONS-6     373655021 5/20/2015     I-131      -3.38E-04    4.23E-03     l.35E-02 u D-37

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC          FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF'        NBF       374058012 5/27/2015     I-131      -l.lOE-03    5.41E-03     1.77E-02   u CF         SBN       374058013 5/27/2015     I-131      -3.85E-03    5.20E-03     l.42E-02   u CF         DOW       374058014 5/27/2015     I-131       l.lOE-03    4.70E-03     l.57E-02   u CF         COL       374058015 5/27/2015     I-131       3.17E-03    4.90E-03     l.70E-02   u CF         ONS-1     374058016 5/27/2015     I-131      -5.62E-03    4.42E-03     1.08E-02   u CF         ONS-2     374058017 5/27/2015     I-131       l.17E-03    5.29E-03     1.79E-02   u CF         ONS-3     374058018 5/27/2015     I-131      -6.90E-03    6.77E-03     1.85E-02   u CF         ONS-4     374058019 5/27/2015     I-131       4.76E-03    6.31E-03     2.28E-02   u CF         ONS-5     374058020 5/27/2015     I-131      -5.35E-03    6.03E-03     1.67E-02   u CF         ONS-6     374058021 5/27/2015     I-131       1.65E-02    6.53E-03     1.02E-02   UI CF         NBF       374491012  6/3/2015     I-131      -1.02E-02    5.89E-03     l.25E-02 *U CF         SBN       374491013  6/3/2015     I-131       3.88E-03    3.36E-03     l.34E-02   U CF         DOW       374491014  6/3/2015     I-131       2.82E-04    6.07E-03     2.05E-02   U CF         COL       374491015  6/3/2015     I-131      -5.59E-03    5.07E-03     1.22E-02   U CF         ONS-1     374491016  6/3/2015     I-131       6.30E-03    4.56E-03     1.71E-02   u CF       ' ONS-2     374491017  6/3/2015     I-131      -8.00E-03    4.54E-03     6.83E-03   u CF         ONS-3     374491018  6/3/2015     I-131      -3.40E-03    4.94E-03     l.45E-02   U CF         ONS-4     374491019  6/3/2015     I-131       4.49E-03    4.69E-03     l.74E-02   U CF         ONS-5     374491020  6/3/2015     I-131       2.05E-03    5.50E-03     l.96E-02   U CF         ONS-6     374491021  6/3/2015     I-131       8.52E-03    6.77E-03     2.49E-02   U CF         NBF       374979012 6/10/2015     I-131      -1.74E-03    5.35E-03     1.66E-02   U CF         SBN       374979013 6/10/2015     I-131      -1.51E-02    8.69E-03     1.59E-02   U CF         DOW       374979014 6/10/2015     I-131      -4.13E-04    4.79E-03     1.52E-02   U CF         COL       374979015 6/10/2015     I-131       5.68E-03    5.02E-03     l.93E-02  .U .
CF         ONS-1     374979016 6/10/2015     I-131       4.06E-03    6.45E-03     2.30E-02   U CF         ONS-2     374979017 6/10/2015     I-131       9.21E-03    8.58E-03     3.09E-02   U CF         ONS-3     374979018 6/10/2015     I-131       1.83E-03    4.13E-03     1.48E-02   U CF         ONS-4     374979019 6/10/2015     I-131       l.28E-02    6.92E-03     2.58E-02   U CF         ONS-5     374979020 6/10/2015     I-131      -3.35E-03    5.50E-03     1.60E-02   U CF         ONS-6     374979021 6/10/2015     I-131       5.09E-03    7.90E-03     2.75E-02   U CF         NBF       375504012 6/17/2015     I-131       6.53E-03    7.47E-03     2.74E-02   U CF         SBN       375504013 6117/2015     I-131      -3.62E-03    5.32E-03     1.51E-02   u CF         DOW       375504014 6/17/2015     I-131       1.04E-03    5.77E-03     l.97E-02   U CF         COL       375504015 6/17/2015     I-131       l.12E-02    6.30E-03     2.51E-02   u CF         ONS-1     375504016 6/17/2015     I-131      -1.05E-03    8.42E-03     2.76E-02   U CF         ONS-2     375504017 6/17/2015     I-131       8.08E-04    5.68E-03     l.96E-02   U CF         ONS-3     375504018 6/17/2015     I-131      -3.55E-03    6.60E-03     l.86E-02   U CF         ONS-4     375504019 6/17/2015     I-131       4.81E-03    4.98E-03     1.89E-02   U CF         ONS-5     375504020 6/17/2015     I-131       6.0IE-03    6.51E-03     2.34E-02   U CF         ONS-6     375504021 6/17/2015     I-131       6.91E-03    6.25E-03     2.39E-02   U CF         NBF       375803012 6/24/2015     I-131      -2.38E-03    4.88E-03     1.58E-02   U CF         SBN       375803013 6/24/2015     I-131       4.47E-04    3.53E-03     l.04E-02   U CF         DOW      *375803014 6/24/2015     I-131       4.93E-03    3.66E-03     l.23E-02   U CF         COL       375803015 6/24/2015     I-131       2.00E-03    3.87E-03     l.32E-02   U CF         ONS-1     375803016 6/24/2015     I-131      -2.76E-03    3.86E-03     l.04E-02   U CF         ONS-2     375803017 6/24/2015     I-131      -l.36E-03    3.87E-03     l.23E-02   U CF         ONS-3     375803018 6/24/2015     I-131       4.09E-04    5.09E-03     1.45E-02   U CF         ONS-4     375803019 6/24/2015     I-131      -3.13E-03    3.79E-03     1:17E-02   U CF         ONS-5     375803020 6/24/2015     I-131      -3.59E-03    3.69E-03     l.08E-02   U CF         ONS-6     375803021 6/24/2015     I-131      -3.09E-03    3.98E-03     l.22E-02   U D-38

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN       DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       376160012   7/1/2015     I-131       3.14E-03    3.56E-03     l.40E-02 u CF         SBN       376160013   7/1/2015     I-131       l.68E-03    4.04E-03     l.4IE-02 u CF         DOW       376160014   7/1/2015     I-131      -6.09E-03    4.56E-03     l.IIE-02 u CF         COL       376160015   7/1/2015     I-131       2.74E-03    2.90E-03     l.14E-02 u CF         ONS-1     376160016   7/1/2015     I-131       6.64E-03    3.41E-03     l.14E-02 u CF         ONS-2     376160017 . 7/1/2015     I-131      -2.57E-03    4.70E-03     l.44E-02 u CF         ONS-3     376160018   7/1/2015     I-131      -6.03E-05    435E-03      l.43E-02 u CF         ONS-4     376160019   7/1/2015     I-131      -6.55E-03    4.36E-03     l.04E-02 u CF         ONS-5     376160020   7/1/2015     I-131      -2.38E-03    4.93E-03     l.50E-02 u CF         ONS-6     376160021   7/1/2015     I-131       5.06E-03    3.96E-03     l.50E-02 u CF         NBF       376892012   7/8/2015     I-131       l.52E-03    4.14E-03     l.48E-02 u CF         SBN       376892013   7/8/2015     I-131      -5.96E-03     5.17E-03    l.19E-02 u CF        DOW        376892014   7/8/2015     I-131       8.88E-03    5.49E-03     2.lOE-02 u CF         COL       376892015   7/8/2015     I-131      -7.5IE-04    6.27E-03     2.02E-02 u CF         ONS-1     376892016   7/8/2015     I-131      -2.52E-03    5.87E-03     l.80E-02 u CF         ONS-2     376892017   7/8/2015     I-131       l.25E-02    6.39E-03     2.31E-02 u CF         ONS-3     376892018   7/8/2015     I-131       5.91E-03    6.62E-03     2.41E-02 u CF         ONS-4     376892019   7/8/2015     I-131       l.40E-03    5.5IE-03     l.85E-02 u CF         ONS-5     376892020   7/8/2015     I-131       3.72E-03    5.50E-03     l.97E-02 u CF         ONS-6     376892021   7/8/2015     I-131       3.30E-03    4.34E-03     l.59E-02 u CF         NBF       377426012  7/15/2015     I-131       2.09E-02    6.68E-03     1.75E-02 UI CF         SBN       377426013  7/15/2015     I-131       4.79E-03    5.22E-03     1.89E-02 u CF         DOW       377426014  7/15/2015     I-131      -3.64E-05    6.14E-03     l.99E-02 u CF         COL       377426015  7/15/2015     I-131       2.71E-03    4.61E-03     l.66E-02 u CF         ONS-1     377426016  7/15/2015     I-131       5.12E-03    5.22E-03     l.92E-02 u CF         ONS-2     377426017  7115/2015     I-131      -1.48E-02     1.09E-02    2.54E-02 u CF         ONS-3     377426018  7/15/2015     1-131      -4.35E-03    4.70E-03     l.23E-02 u CF         ONS-4     377426019  7/15/2015     I-131      -7.40E-03    5.49E-03     l.21E-02 u CF         ONS-5     377426020  7/16/2015     1-131      -3.05E-03    7.79E-03     2.40E-02 u CF         ONS-6     377426021  7/15/2015     I-131       5.13E-03    5.05E-03     l.91E-02 u CF         NBF       377895012  7/22/2015     1-131       1.54E-04    6.04E-03     1.71E-02 u CF         SBN       377895013  7/22/2015     I-131       l.18E-03    4.12E-03     1.40E-02 u CF         DOW       377895014  7/22/2015     1-131       4.19E-03     5.87E-03    2.IOE-02 u CF         COL       377895015  7/22/2015     1-131      -5.53E-03    4.45E-03     l.03E-02 u CF         ONS-1     377895016  7/22/2015     I-131       l.41E-03     5.78E-03    l.99E-02 u CF         ONS-2     377895017  7/22/2015     I-131       1.27E-03    3.66E-03     l.28E-02 u CF         ONS-3     377895018  7/22/2015     I-131       3.82E-04    4.00E-03     l.33E-02 u CF         ONS-4     377895019  7/22/2015     1-131       l.93E-04    3.91E-03     l.32E-02 u CF         ONS-5     377895020  7/22/2015     I-131      -l.48E-03    4.14E-03     l.28E-02 u CF         ONS-6     377895021  7/22/2015     I-131      -1.07E-02    6.86E-03     l.17E-02 u CF        NBF        378372012  7/29/2015     I-131      -2.53E-03    4.23E-03     l.25E-02 u CF         SBN       378372013  7/29/2015     I-131      -l.24E-02    6.53E-03     1.28E-02 u CF         DOW       378372014  7/29/2015     I-131       l.25E-02     6.43E-03    2.39E-02 u CF         COL       378372015  7/29/2015     I-131      -6.59E-03     3.92E-03    6.87E-03 u CF         ONS-1     378372016  7/29/2015     1-131       8.09E-06     6.36E-03    2.09E-02 u CF         ONS-2     378372017  7/29/2015     I-131       8.09E-03     6.08E-03    2.25E-02 u CF         ONS-3     378372018  7/29/2015     I-131       7.57E-03    4.94E-03     l.84E-02 u CF         ONS-4     378372019  7/29/2015     I-131      -7.87E-03    5.05E-03     1.03E-02 u CF         ONS-5     378372020  7/29/2015     I-131       3.58E-03    5.96E-03     2.07E-02 u CF         ONS-6     378372021  7/29/2015     I-131      -4.03E-03    3.43E-03     7.50E-03 u D-39

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE     STATION       LSN      DATE      NUCLIDE        (pCi/m3) *  (pCi/m3)    (pCi/m3)
CF         NBF       378883012  8/5/2015     1-131       2.59E-05    5.43E-03     l.82E-02  u CF         SBN       378883013  8/5/2015     1-131       5.56E-03    6.0IE-03     2.19E-02  u CF         DOW       378883014  8/5/2015     I-131       8.81E-03    5.41E-03     l.89E-02  u CF         COL       378883015  8/5/2015     1-131      -2.00E-03    6.43E-03     2.0IE-02  u CF         ONS-1     378883016  8/5/2015     1-131       l.17E-02    5.99E-03     2.32E-02  u CF         ONS-2     378883017  8/5/2015     1-131      -7.5IE-03    6.26E-03     l.38E-02  u CF         ONS-3     378883018  8/5/2015     1-131       2.92E-03    5.07E-03     1.84E-02  u CF         ONS-4     378883019  8/5/2015     1-131       7.75E-03    4.62E-03     l.98E-02  u CF         ONS-5     378883020  8/5/2015     1-131       6.12E-03    7.33E-03     2.09E-02  u CF         ONS-6     378883021  8/5/2015     1-131      -l.02E-02    6.36E-03     1.24E-02  u CF         NBF       379369012 8/12/2015     1-131       l.37E-03    3.14E-03     l.13E-02  u CF         SBN       379369013 8/12/2015     1-131       l.97E-03    4.75E-03     l.65E-02  u CF         DOW       379369014 8/12/2015     I-131      -l.27E-03    3.45E-03     l.09E-02  u CF         COL       379369015 8/12/2015     1-131      -3.33E-03    3~93E-03     l.08E-02  u CF         ONS-1     379369016 8/12/2015     1-131      -2.99E-04    5.63E-03     l.82E-02  u CF         ONS-2     379369017 8/12/2015     1-131       l.12E-03    5.25E-03     l.75E-02  u CF         ONS-3     379369018 8/12/2015     1-131      -5.34E-03    6.76E-03     2.04E-02  u CF         ONS-4     379369019 8/12/2015     1-131      -7.98E-03    5.12E-03     l.04E-02  u CF         ONS-5     379369020 8/12/2015     1-131       3.3IE-03    5. l 7E-03   l.85E-02  u CF        ONS-6      379369021 8/12/2015     1-131       4.IOE-04    3.88E-03     l.32E-02  u CF        NBF        379768012 8/19/2015     1-131       2.29E-03    6.20E-03     2.17E-02  u CF         SBN       379768013 8/19/2015     1-131       2.38E-03    4.76E-03     l.73E-02  u CF         DOW      *379768014 8/19/2015     1-131      -2.IOE-03    5.31E-03     l.57E-02  u CF        COL        379768015 8/19/2015     1-131       2.91E-03    5.35E-03     l.90E-02  u CF         ONS-1     379768016 8/19/2015     1-131      -2.86E-03    4.06E-03     1.14E-02  u CF         ONS-2     379768017 8/19/2015     1-131       2.02E-03    8.80E-03     2.97E-02  u CF         ONS-3     379768018 8/19/2015     1-131      -l.50E-04    4.96E-03     1.65E-02  u CF        ONS-4      379768019 8/19/2015     1-131      -9.49E-03    7.32E-03     l.91E-02  u CF        ONS-5      379768020 8/19/2015     1-131      -7.73E-03    5.40E-03     l.li>E-02 u CF         ONS-6     379768021 8/19/2015     1-131      -2.88E-04    4.71E-03     1.50E-02  u CF        NBF        380195012 8/26/2015     1-131      -4.18E-03    5.16E-03     l.43E-02  u
 *CF         SBN       380195013 8/26/2015     1-131       3.03E-03    5.32E-03     l.88E-02  u CF         DOW       380195014 8/26/2015     1-131      -l.40E-03    4.65E-03     l.49E-02  u CF         COL       380195015 8/26/2015     1-131       3.76E-03    6.13E-03     2.18E-02  u CF         ONS-1     380195016 8/26/2015     1-131       l.OIE-03    6.71E-03     2.20E-02  u CF        ONS-2      380195017 8/26/2015     1-131       2.19E-03    8.73E-03     2.96E-02  u CF        ONS-3      380195018 8/26/2015     1-131      -l.03E-03    4.55E-03     l.41E-02  u CF         ONS-4     380195019 8/26/2015     1-131       l.53E-03    6.85E-03     2.36E-02  u CF         ONS-5     380195020 8/26/2015     1-131      -9.87E-03    6.65E-03     l.57E-02  u CF        ONS-6      380195021 8/26/2015     1-131       3.23E-03    7.41E-03     2.52E-02  u CF        NBF        380656012  9/2/2015     1-131      -8.19E-04    5.83E-03     l.89E-02  u CF         SBN       380656013  9/2/2015     1-131       8.12E-04    5.45E-03     l.63E-02  u CF        DOW        380656014  9/2/2015     1-131      -3.14E-04    5.12E-03     l.64E-02  u CF        COL        380656015 9/2/2015      1-131       l.28E-02    7.70E-03     l.95E-02  u CF        ONS-1      380656016  9/2/2015     1-131       8.16E-03    6.77E-03     2.44E-02  u CF         ONS-2     380656017  9/2/2015     1-131      -4.08E-03    4.48E-03     l.07E-02  u CF        ONS-3      380656018 9/2/2015      1-131      -6.84E-03    5.99E-03     l.39E-02  u CF        ONS-4      380656019  9/2/2015     1-131       8.27E-03    8.28E-03     2.98E-02  u CF        ONS-5      380656020  9/2/2015     1-131      -7.15E-03    5.82E-03     l.41E-02  u CF         ONS-6     380656021  9/2/2015     I-131      -2.16E-03    5.60E-03     l.69E-02  u D-40

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN       DATE       NUCLIDE       (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       381042012   9/9/2015     1-131      -4.26E-03    7.91E-03     2.39E-02  u CF         SBN       381042013   9/9/2015     1-131      *l.29E-03    7.31E-03     2.27E-02  u CF         DOW       381042014   9/9/2015     1-131      -5.41E-03    6.04E-03     l.62E-02  u CF         COL       381042015   9/9/2015     1-131      -l.62E-03    5.75E-03     l.74E-02  u CF         ONS-1     381042016   9/9/2015     1-131       5.94E-03    6.63E-03     2.41E-02  u CF         ONS-2     381042017   9/9/2015     1-131      -5.65E-03    5.98E-03     l.60E-02  u CF         ONS-3     381042018   9/9/2015     1-131      -l.42E-03    4.14E-03     l.29E-02  u CF         ONS-4     381042019   9/9/2015     1-131      -8.71E-04    6.21E-03     2.06E-02  u CF         ONS-5     381042020   9/9/2015     1-131       5.15E-03    5.07E-03     l.89E-02  u CF         ONS-6     381042021   9/9/2015     1-131       5.41E-03    5.64E-03     2.05E-02  u CF         NBF       381428012  9/16/2015     1-131      -6.14E-03    3.43E-03     7.15E-03  u CF         SBN       381428013  9/16/2015     1-131       7.74E-03    3.91E-03     l.31E-02  u CF         DOW       381428014  9/16/2015     1-131       l.03E-03    2.76E-03     9.34E-03  u CF         COL       381428015  9/16/2015     1-131      -l.62E-03    3.62E-03     l. lSE-02 u CF         ONS-1     381428016  9/16/2015     1-131       9.72E-03    4.SSE-03     l.09E-02  u CF         ONS-2     381428017  9/16/2015     1-131      -l.94E-03    2.54E-03     7.83E-03  u CF         ONS-3     381428018  9/16/2015     1-131      -l.51E-03    2.94E-03     8.97E-03  u CF         ONS-4     381428019  9/16/2015     1-131      -l.96E-03    2.90E-03     8.89E-03  u CF         ONS-5     381428020  9/16/2015     1-131      -9.63E-04    2.43E-03     7.65E-03  u CF         ONS-6     381428021  9/16/2015     1-131       6.54E-03    4.76E-03     l.64E-02  u CF        NBF        381831012  9/23/2015     1-131      -2.68E-03    3.78E-03     l.l lE-02 u CF         SBN       381831013  9/23/2015     1-131      -2.63E-03    2.97E-03     8.SSE-03  u CF         DOW       381831014  9/23/2015     1-131      ~9.47E-04    3.05E-03     9.33E-03  u CF         COL       381831015  9/23/2015     1-131       4.27E-04    3.0SE-03     9.71E-03  u CF         ONS-1     381831016  9/23/2015     1-131       2.91E-03    3.79E-03     l.33E-02  u CF         ONS-2     381831017  9123/2015     1-131       9.llE-04    6.70E-03     l.95E-02  u CF         ONS-3     381831018  9123/2015     1-131       l.SlE-03    4.41E-03     l.50E-02  u CF         ONS-4     381831019  9/23/2015     1-131       8.55E-04    3.24E-03     l.llE-02  u CF         ONS-5     381831020  9/23/2015     1-131       2.89E-03    3.45E-03     l.24E-02  u CF         ONS-6     381831021  9/23/2015     1-131       3.39E-03    3.l lE-03    l.09E-02  u CF         NBF       382263012  9/30/20l5     1-131       2.67E-03    7.76E-03     2.70E-02  u CF         SBN       382263013  9/30/2015     1-131      -l.44E-02    9.65E-03     2.lOE-02  u CF        DOW        382263014  9/30/2015     1-131      -2.78E-03    4.78E-03     l.43E-02  u CF         COL       382263015  9/30/2015     1-131      -9.20E-03    8.24E-03     2.25E-02  u CF         ONS-1     38226:3016 9/30/2015     1-131       4.97E-03    5.29E-03     l.99E-02  u CF         ONS-2     382263017  9/30/2015     1-131      -2.66E-04    2.79E-03     8.92E-03  u CF         ONS-3     382263018  9/30/2015     1-131      -2.SOE-03    5.76E-03     l.SOE-02  u CF         ONS-4     382263019  9/30/2015     1-131      -l.70E-03    7.17E-03     2.27E-02  u CF         ONS-5     382263020  9/30/2015     1-131      -2.41E-03    7.96E-03     2.50E-02  u CF         ONS-6     382263021  9/30/2015 . 1-131      -9.67E-04    4.85E-03     l.58E-02  u CF        NBF        382890012  10/7/2015     1-131       5.15E-04    6.06E-03     2.06E-02  u CF         SBN       382890013  10/7/2015     1-131      -l.57E-03    7.48E-03     2.34E-02  u CF        DOW        382890014  10/7/2015     1-131       6.48E-03    6.29E-03     2.27E-02  u CF         COL       382890015  10/7/2015     1-131       l.60E-03    6.33E-03     2.15E-02  u CF         ONS-1     382890016  10/7/2015     1-131      -3.60E-03    4.60E-03     l.23E-02  u CF         ONS-2     382890017  10/7/2015     1-131       8.50E-03    5.87E-03     2.17E-02  u CF         ONS-3     382890018  10/7/2015     1-131       3.58E-03    4.74E-03     I. 74E-02 u CF         ONS-4     382890019  10/7/2015     1-131      -4.16E-04    4.99E-03     l.60E-02  u CF         ONS-5     382890020  10/7/2015     1-131      -4.14E-03    4.98E-03     l.27E-02  u CF         ONS-6     382890021  10/7/2015     1-131.     -l.57E-03    5.35E-03     l.68E-02  u D-41

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE     NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       383491012 10/14/2015    I-131       5.88E-04    6.48E-03     2.12E-02 u CF         SBN       383491013 10/14/2015    I-131       2.39E-03     6.26E~03    2.19E-02 u CF         DOW       383491014 10/14/2015    I-131       3.40E-03    6.12E-03     2.15E-02 u CF         COL       383491015 10/14/2015    I-131      -6.76E-03    7.15E-03     1.91E-02 u CF         ONS-1     383491016 10/14/2015    I-131       5.31E-04. 5.92E-03     1.97E-02 u CF         ONS-2     383491017 10/14/2015    I-131      -5.65E-03    5.44E-03     l.35E-02 u CF         ONS-3     383491018 10/14/2015    I-131      -8.0IE-03    5.79E-03     1.45E-02 u CF         ONS-4     383491019 10/14/2015    I-131       2.79E-03    6.56E-03     2.23E-02 u CF         ONS-5     383491020 10/14/2015    I-131       7.86E-03    5.82E-03     2.17E-02 u CF         ONS-6     383491021 10/14/2015    I-131       3.43E-03    5.78E-03     2.04E-02 u CF         NBF       383944012 10/21/2015    I-131       2.39E-03    5.37E-03     1.88E-02 u CF         SBN       383944013 10/21/2015    I-131       1.17E-02    6.30E-03     2.29E-02 u CF         DOW       383944014 10/21/2015    I-131       l.41E-03    5.54E-03     l.90E-02 u CF         COL       383944015 10/21/2015    I-131      -5.77E-03    5.03E-03     l.27E-02 u CF         ONS-1     383944016 10/21/2015    I-131      -1.71E-03    3.34E-03     9.09E-03 u CF         ONS-2     383944017 10/21/2015    I-131       1.57E-03    6.21E-03     2.13E-02 u CF         ONS-3     383944018 10/21/2015    I-131      -1.06E-02    6.30E-03     1.28E-02 u CF         ONS-4     383944019 10/21/2015    I-131       5.04E-03    4.84E-03     l.89E-02 u CF         ONS-5     383944020 10/21/2015    I-131       2.00E-03    4.IOE-03     1.45E-02 u CF         ONS-6     383944021 10/21/2015    I-131      -2.49E-03    3.0IE-03     6.74E-03 u CF         NBF       384389012 10/28/2015    I-131       l.03E-03    5.17E-03     1.75E-02 u CF         SBN       384389013 10/28/2015    I-131      -2.88E-03    6.66E-03     1.99E-02 u CF         DOW       384389014 10/28/2015    I-131       1.06E-02    7.41E-03     2.78E-02 u CF         COL       384389015 10/28/2015    I-131       6.59E-03    5.76E-03     2.09E-02 u CF         ONS-1     384389016 10/28/2015    I-131      -4.23E-03    6.16E-03     1.82E-02 u CF         ONS-2     384389017 10/28/2015    I-131       3.73E-03    5.72E-03     2.07E-02 u CF         ONS-3     384389018 10/28/2015    I-131       4.58E-04    4.49E-03     1.48E-02 u CF         ONS-4     384389019 10/28/2015    I-131      -2.35E-03    5.35E-03     1.67E-02 u CF         ONS-5     384389020 10/28/2015    I-131      -1.16E-04     5.88E-03    1.94E-02 u CF         ONS-6     384389021 10/28/2015    I-131       1.84E-03    6.85E-03     2.40E-02 u CF        NBF        384929012  11/4/2015    I-131       9.15E-03    4.85E-03     1.77E-02 u CF         SBN       384929013  11/4/2015    I-131       3.73E-04    3.29E-03     l.13E-02 u CF         DOW       384929014  11/4/2015    I-131      -8.88E-03    5.31E-03     1.14E-02 u CF         COL       384929015  11/4/2015    I-131       4.03E-03    4.54E-03     1.65E-02 u CF         ONS-1     384929016  1114/2015    I-131      -4.66E-03    4.99E-03     l.34E-02 u CF         ONS-2     384929017  11/4/2015    I-131       3.93E-03    5.llE-03     l.84E-02 u CF         ONS-3     384929018  11/4/2015    I-131      -2.lOE-03    4.04E-03     l.22E-02 u CF         ONS-4     384929019  11/4/2015    I-131       2.68E-03    5.45E-03     l.87E-02 u CF         ONS-5     384929020  11/4/2015    I-131       1.82E-03    4.62E-03     l.63E-02 u CF         ONS-6     384929021  11/4/2015    I-131      -5.55E-03    4.54E-03     1.IOE-02 u CF         NBF       385529012 11/11/2015    I-131       l.92E-03     8.67E-03    2.91E-02 u CF         SBN       385529013 11/11/2015    I-131      -4.44E-03    4.lOE-03     1.00E-02 u CF         DOW       385529014 11/1112015    I-131       5.52E-04    6.78E-03     2.29E-02 u CF         COL       385529015 11/11/2015    I-131      -5.75E-04    4.31E-03     l.38E-02 u CF         ONS-1     385529016 11/11/2015    I-131      -5.48E-03    4.71E-03     1.07E-02 u CF         ONS-2     385529017 11/11/2015    I-131       l.72E-02     8.49E-03    3.26E-02 u CF         ONS-3     385529018 11/11/2015    I-131      -l.38E-03    4.40E-03     l.38E-02 u CF         ONS-4     385529019 11/11/2015    I-131       2.73E-03    6.47E-03     2.29E-02 u CF         ONS-5     385529020 11/11/2015    I-131      -5.77E-04    4.85E-03     1.57E-02 u CF         ONS-6     385529021 11/11/2015    I-131       1.61E-03     5.IOE-03    1.76E-02 u D-42

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC       STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE     NUCLIDE         (pCi/ni.3)  (pCi/m3)   (pCi/m3)
CF         NBF       386093012 11/18/2015    I-131      -5.47E-03      5.74E-03   1.53E-02  u CF         SBN       386093013 11/18/2015    I-131       5.15E-03      7.54E-03   2.60E-02  u CF         DOW       386093014 11/18/2015    I-131      -2.07E-03      4.74E-03    l.49E-02 u CF         COL       386093015 11/18/2015    I-131       4.68E-03      4.61E-03   1.75E-02  u CF         ONS-1     386093016 11/18/2015    I-131      -4.52E-03      4.75E-03   1.20E-02  u CF         ONS-2     386093017 11/18/2015    I-131       6.80E-03      4.71E-03   1.85E-02  u CF         ONS-3     386093018 11/18/2015    I-131       3.46E-04      3.83E-03    l.27E-02 u CF         ONS-4     386093019 11/18/2015    I-131       3.29E-03      4.85E-03   1.72E-02  u CF         ONS-5     386093020 11/18/2015    I-131      -2.88E-03      5.45E-03    l.65E-02 u CF         ONS-6     386093021 11/18/2015    I-131      -6.15E-04      3.83E-03    l.22E-02 u CF         NBF       386425012 11/25/2015    I-131      -1.06E-02      6.17E-03   1.0lE-02  u CF         SBN       386425013 11/25/2015    I-131       5.85E-03      6.46E-03   2.34E-02  u CF         DOW       386425014 1112512015    I-131      -l.25E-02      5.89E-03   7.24E-03  u CF         COL       386425015 11/25/2015    I-131        1.83E-02     1.05E-02   3.81E-02  u CF         ONS-1     386425016 11/25/2015    I-131       2.85E-03      6.66E-03   2.33E-02  u CF         ONS-2     386425017 1112512015    I-131        1.82E-03     7.18E-03   2.44E-02  u CF         ONS-3     386425018 11/25/2015    I-131      -2.03E-04      1.17E-02   3.86E-02  u CF         ONS-4     386425019 11/25/2015    I-131       9.62E-03      5.74E-03   2.46E-02  u CF         ONS-5     386425020 11/25/2015    I-131       4.00E-04. 5.65E-03    l.89E-02 u CF         ONS-6     386425021 11/25/2015    I-131       9.90E-03      l.30E-02   4.64E-02  u CF         NBF       386774012  12/2/2015    I-131       5.33E-03      5.32E-03    l.97E-02 u CF         SBN       386774013  12/2/2015    I-131        1.95E-03     4.52E-03    l.58E-02 u CF         DOW       386774014  12/2/2015    I-131      -2.36E-03      5.98E-03    l.77E-02 u CF         COL       38677~015  12/2/2015    I-131       2.45E-03      4.34E-03    l.54E-02 u CF         ONS-1     386774016  12/2/2015    I-131      -6.17E-03      5.35E-03    l.23E-02 u CF         ONS-2     386774017  12/2/2015    I-131      -5.29E-03      5.67E-03    l.54E-02 u CF         ONS-3     386774018  12/2/2015    1-131      -4.49E-03      7.30E-03   2.08E-02  u CF         ONS-4     386774019  12/2/2015    I-131      -6.53E-03      4.85E-03    l.07E-02 u CF         ONS-5     386774020  12/2/2015    I-131      -3.38E-03      4.13E-03    1.20E-02 u CF         ONS-6     386774021  12/2/2015    I-131      -2.22E-03      3.41E-03    1.03E-02 u CF         NBF       387341012  12/9/2015    I-131      -4.29E-03      5.61E-03    1.59E-02 u CF         SBN       387341013  12/9/2015    I-131      -6.67E-04      5.14E-03    l.63E-02 u CF         DOW       387341014  12/9/2015    I-131      -5.22E-03      6.05E-03    l.53E-02 u CF         COL       387341015  12/9/2015    I-131      -1.02E-02      6.36E-03    l.50E-02 u CF         ONS-1     387341016  121912015    I-131      -l.13E-03      4.85E-03    l.53E-02 u CF         ONS-2     387341017  12/9/2015    I-131        1.76E-03   . 4.43E-03    l.56E-02 u CF         ONS-3     387341018  12/9/2015    I-131       8.26E-03      6.74E-03   2.47E-02  u CF         ONS-4     387341019  12/9/2015    I-131      -1.26E-03      5.45E-03
* l.78E-02 u CF         ONS-5     387341020  12/9/2015    I-131      -1.15E-03      5.71E-03    l.83E-02 u CF         ONS-6     387341021  121912015    I-131      -9.80E-03      7.06E-03    l.62E-02 u CF         NBF       387887012 12/16/2015    I-131       2.55E-03      7.60E-03   2.57E-02  u CF         SBN       387887013 12/16/2015    I-131        1.07E-02     l.02E-02   3.60E-02  u CF         DOW       387887014 12/16/2015    I-131       2.29E-04      6.42E-03   2.14E-02  u CF         COL       387887015 12/16/2015    I-131      -l.31E-03      5.37E-03    l.69E-02 u CF         ONS-1     387887016 12/16/2015    I-131        9.34E-05     5.23E-03    1.52E-02 u CF         ONS-2     387887017 12/16/2015    I-131       -2.04E-03     8.04E-03   2.50E-02  u CF         ONS-3     387887018 12/16/2015    I-131        1.83E-03     7.33E-03   2.47E-02  u CF         ONS-4     387887019 12/16/2015    I-131       2.59E-03      6.26E-03   2.15E-02  u CF         ONS-5     387887020 12/16/2015    I-131       -8.73E-04     5.89E-03    l.94E-02 u CF         ONS-6     387887021 12/16/2015    I-131       -l.87E-03     6.08E-03    l.90E-02 u D-43

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC       STD.DEV.      MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)     (pCi/m3)   (pCi/m3)
CF        NBF        388145012 12/23/2015    1-131      -2.06E-03     3.SOE-03    l.02E-02 u CF         SBN       388145013 12/23/2015    1-131      -5.29E-04     5.30E-03    l.68E-02 u CF         DOW       388145014 12/23/2015    1-131       3.64E-03     6.70E-03    2.40E-02 u CF         COL       388145015 12/23/2015    1-131      -2.22E-03     7.52E-03    2.36E-02 u CF         ONS-1     388145016 12/23/2015    1-131      -l.OlE-02     6.54E-03    l.23E-02 u CF         ONS-2     388145017 12/23/2015    1-131      -3.02E-03     7.66E-03    2.27E-02 u CF         ONS-3     388145018 12/23/2015    1-131       l.OSE-03     4.65E-03    l.63E-02 u CF         ONS-4     388145019 12/23/2015    1-131      -1.29E-02     7.70E-03    1.67E-02 u CF         ONS-5     388145020 12/23/2015    1-131       9.16E-04  -  5.17E-03    l.75E-02 u CF         ONS-6     388145021 12/23/2015    1-131       8.96E-03     5.87E-03    2.19E-02 u CF        NBF        388629012 12/30/2015    I-131       2:86E-03     6.62E-03    2.36E-02 u CF         SBN       388629013 12/30/2015    1-131       9.25E-03     8.75E-03    3.12E-02 u CF        DOW        388629014 12/30/2015    1-131      -l.13E-02     8.0lE-03    l.83E-02 u CF         COL       388629015 12/30/2015    I-131       8.33E-04     8.19E-03    2.66E-02 u CF         ONS-1     388629016 12/30/2015    I-131      -6.82E-03     6.98E-03    2.00E-02 u CF        ONS-2      388629017 12/30/2015    I-131      -3.66E-03     6.13E-03    l.86E-02 u CF         ONS-3     388629018 12/30/2015    I-131      -l.77E-03     3.57E-03    l.02E-02 u CF         ONS-4     388629019 12/30/2015    1-131      -8.76E-04     6.SlE-03    2.15E-02 u CF         ONS-5     388629020 12/30/2015    1-131      -7.07E-03     5.96E-03    1.71E-02 u CF        ONS-6      388629021 12/30/2015    I-131       2.30E-03     6.21E-03    2.17E-02 u D-44

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN     DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         OFS-N     374475001 6/3/2015    Ac-228       9.35E+OO    5.39E+OO    l.68E+Ol u FH         OFS-N     374475001 6/3/2015   Ag-108m       3.55E-02    9.50E-Ol    3.09E+OO u FH         OFS-N     374475001 6/3/2015   Ag-llOm       2.61E-Ol    l.67E+OO    5.47E+OO u FH         OFS-N     374475001 6/3/2015    Ba-140      -l.28E+Ol    7.47E+OO    2.08E+Ol u FH         OFS-N     374475001 6/3/2015     Be-7        2.IOE+Ol    l.12E+Ol    3.41E+Ol u FH         OFS-N     374475001 6/3/2015    Ce-141        l.13E-Ol   3.IOE+OO    5.82E+OO u FH         OFS-N     374475001 6/3/2015    Ce-144       6.42E+OO    7.63E+OO    2.0lE+Ol u FH         OFS-N     374475001 6/3/2015    Co-57       -2.16E-Ol    8.52E-Ol    2.76E+OO u FH         OFS-N     374475001 6/3/2015    Co-58        2.26E+OO    l.31E+OO    4.14E+OO u FH         OFS-N     374475001 6/3/2015    Co-60       -l.20E+OO    1.31E+OO    4.05E+OO u FH         OFS-N     374475001 6/3/2015     Cr-51       l.96E+Ol    l.llE+Ol    3.48E+Ol u FH         OFS-N     374475001 6/3/2015    Cs-134       l.03E+OO    l.23E+OO    4.06E+OO U FH         OFS-N     374475001 6/3/2015    Cs-137       l.43E+Ol    2.22E+OO    3.69E+OO M FH         OFS-N     374475001 6/3/2015     Fe-59       l.81E+OO    3.06E+OO    l.03E+Ol U FH         OFS-N     374475001 6/3/2015     1-131       8.33E-01    2.46E+OO    8.llE+OO U FH         OFS-N     374475001 6/3/2015     K-40        3.03E+03    l.46E+02    3.97E+Ol FH         OFS-N     374475001 6/3/2015    La-140       9.75E-01    l.90E+OO    6.32E+OO u FH         OFS-N     374475001 6/3/2015    Mn-54       -4.85E-01    l.16E+OO    3.74E+OO u FH         OFS-N     374475001 6/3/2015    Nb-95        l.74E+OO    l.26E+OO    4.lOE+OO u FH         OFS-N     374475001 6/3/2015    Ru-103      -5.79E-Ol    1.46E+OO    4.03E+OO u FH         OFS-N     374475001 6/3/2015    Ru-106       l.36E+Ol    9.48E+OO    3.15E+Ol u FH         OFS-N     374475001 6/3/2015    Sb-124       6.09E+OO    2.96E+OO    9.46E+OO u FH         OFS-N     374475001 6/3/2015    Sb-125       1.80E+OO    2.85E+OO    9.30E+OO u FH         OFS-N     374475001 6/3/2015     Se-75       9.76E-Ol    1.34E+OO    4.48E+OO U FH         OFS-N     374475001 6/3/2015    Th-228       1.51E+OO    2.53E+OO    6.59E+OO U FH         OFS-N     374475001 6/3/2015    Zn-65       -2.41E+OO    3.09E+OO    9.93E+OO U FH         OFS-N     374475001 6/3/2015     Zr-95       4.34E-Ol    2.19E+OO    7.26E+OO U FH         ONS-N     374475002 6/3/2015    Ac-228'      2.18E+OO    5.36E+OO    l.40E+Ol U FH         ONS-N     374475002 6/3/2015   Ag-108m      -2.14E-Ol    7.82E-Ol    2.49E+OO U FH         ONS-N     374475002 6/3/2015   Ag-llOm       l.62E+OO    l.37E+OO    4.44E+OO U FH         ONS-N     374475002 6/3/2015    Ba-140      -9.76E+OO    8.21E+OO    l.95E+Ol U FH         ONS-N     374475002 6/3/2015     Be-7 .     -1.47E+Ol    1.09E+Ol    2.59E+Ol U FH         ONS-N     374475002 6/3/2015    Ce-141       3.62E+OO    2.47E+OO    4.74E+OO U FH         ONS-N     374475002 6/3/2015    C~-144        l.67E-Ol   4.97E+OO    1.67E+Ol U FH         ONS-N     374475002 6/3/2015    Co-57       -2.89E-Ol    6.48E-Ol    2.17E+OO U FH         ONS-N     374475002 6/3/2015    Co-58       -2.18E+OO    l.14E+OO    3.14E+OO U FH         ONS-N     374475002 6/3/2015    Co-60       -l.32E+OO    1.13E+OO    3.47E+OO U FH         ONS-N     374475002 6/3/2015     Cr-51      -4.68E+OO    9.24E+OO    2.96E+Ol U FH         ONS-N     374475002 6/3/2015    Cs-134      -l.22E-01    1.07E+OO    3.50E+OO U FH         ONS-N     374475002 6/3/2015    Cs-137       7.02E+OO    1.79E+OO    3.llE+OO M FH         ONS-N     374475002 6/3/2015     Fe-59       3.60E+OO    2.62E+OO    8.33E+OO U FH         ONS-N     374475002 6/3/2015     1-131       1.50E+OO    2.46E+OO    7.96E+OO U FH         ONS-N     374475002 6/3/2015     K-40        3.13E+03    1.49E+02    2.56E+Ol FH         ONS-N     374475002 6/3/2015    La-140       5.18E-Ol    1.65E+OO    5.48E+OO u FH         ONS-N     374475002 6/3/2015    Mn-54       -5.33E-Ol    9.96E-Ol    3.18E+OO u FH         ONS-N     374475002 6/3/20p     Nb-95        l.66E+OO    l.06E+OO    3.39E+OO u FH         ONS-N     374475002 6/3/2015    Ru-103      -8.87E-02    9.57E-Ol    3.22E+OO U FH         ONS-N     374475002 6/3/2015    Ru-106      -l.22E+Ol    8.85E+OO    2.69E+Ol U FH         ONS-N     374475002 6/3/2015    Sb-124       l.09E+OO    2.12E+OO    6.15E+OO U FH         ONS-N     374475002 6/3/2015    Sb-125      -8.69E-Ol    2.32E+OO    7.34E+OO U D-45

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         ONS-N     374475002  61312015     Se-75       2.81E-Ol    l.18E+OO    3.89E+OO u FH         ONS-N     374475002  6/3/2015    Th-228      -4.98E-Ol    2.15E+OO    5.42E+OO u FH         ONS-N     374475002  6/3/2015    Zn-65       -l.15E+OO    2.47E+OO    8.14E+OO u FH         ONS-N     374475002  6/3/2015     Zr-95       9.22E-Ol    l.66E+OO    5.51E+OO u FH         ONS-S     374475003  6/3/2015    Ac-228      -5.59E+OO    5.09E+OO    1.24E+Ol u FH         ONS-S     374475003  6/3/2015   Ag-108m       4.86E-Ol    8.93E-Ol    2.38E+OO u FH         ONS-S     374475003  6/3/2015   Ag-llOm      -2.69E+OO    l.31E+OO    3.59E+OO u FH         ONS-S     374475003  6/3/2015    Ba-140       1.14E+OO    5.42E+OO    l.77E+Ol u FH         ONS-S     374475003  6/3/2015     Be-7        l.48E+Ol    8.22E+OO    2.55E+Ol u FH         ONS-S     374475003  6/3/2015    Ce-141      -2.19E+OO    l.92E+OO    4.84E+OO u FH         ONS-S     374475003  6/3/2015    Ce-144      -6.00E+OO    5.20E+OO    l.59E+Ol u FH         ONS-S     374475003  6/3/2015    Co-57       -l.22E+OO    7.21E-Ol    2.lOE+OO u FH         ONS-S     374475003  6/3/2015    Co-58        2.62E-Ol    8.74E-Ol    2.95E+OO u FH         ONS-S     374475003  6/3/2015    Co-60       -I.65E+OO    l.53E+OO    3.25E+OO u FH         ONS-S     374475003  6/3/2015     Cr-51       1.14E+Ol    8.78E+OO    2.86E+Ol u FH         ONS-S     374475003  6/3/2015    Cs-134      -6.83E-Ol    9.84E-Ol    3.04E+OO u FH         ONS-S     374475003  6/3/2015    Cs-137       2.09E+Ol    l.75E+OO    2.91E+OO M FH         ONS-S     374475003  6/3/2015     Fe-59       7.16E-Ol    2.18E+OO    7.25E+OO u FH         ONS-S     374475003  6/3/2015     1-131      -l.87E+OO    2.22E+OO    7.15E+OO u FH         ONS-S     374475003  6/3/2015     K-40        3.22E+03    l.48E+02    2.62E+Ol FH         ONS-S     374475003  6/3/2015    La-140      -1.70E+OO    l.53E+OO    4.45E+OO u FH         ONS-S     374475003  6/3/2015    Mn-54        2.23E-Ol    8.48E-Ol    2.86E+OO u FH         ONS-S     374475003  6/3/2015    Nb-95       -2.17E+OO    l.78E+OO    2.90E+OO u FH         ONS-S     374475003  6/3/2015    Ru-103      -3.60E-Ol    9.48E-Ol    3.07E+OO u FH         ONS-S     374475003  6/3/2015    Ru-106       2.24E+OO    7.76E+OO    2.52E+Ol u FH         ONS-S     374475003  6/3/2015    Sb-124      -l.37E-Ol    l.82E+OO    6.09E+OO u FH         ONS-S     374475003  6/3/2015    Sb-125      -3.89E-Ol    2.44E+OO    7.04E+OO u FH         ONS-S     374475003  6/3/2015     Se-75      -3.15E-Ol    l.06E+OO    3.57E+OO u FH         ONS-S     374475003  6/3/2015    Th-228       l.OOE+OO    2.49E+OO    5.19E+OO u FH         ONS-S     374475003  6/3/2015    Zn-65        8.08E-Ol    2.51E+OO    7.22E+OO u FH         ONS-S     374475003  6/3/2015     Zr-95      -l.48E+OO    l.61E+OO    4.90E+OO u FH         OFS-S     374475004  6/3/2015    Ac-228      -8.12E+OO    6.81E+OO    l.39E+Ol u FH         OFS-S     374475004  6/3/2015   Ag-108m      -5.82E-Ol    7.97E-Ol    2.53E+OO u FH         OFS-S     374475004  6/3/2015   Ag-llOm      -7.51E-Ol    l.37E+OO    4.30E+OO u FH         OFS-S     374475004  6/3/2015    Ba-140       5.28E+OO    5.94E+OO    l.93E+Ol u FH         OFS-S     374475004  6/3/2015     Be-7        2.34E+OO    8.18E+OO    2.68E+Ol u FH         OFS-S     374475004  6/3/2015    Ce-141      -1.IIE+OO    l.59E+OO    5.00E+OO u FH         OFS-S     374475004  6/3/2015    Ce-144      -l.50E+Ol    6.37E+OO    l.64E+Ol u FH         OFS-S     374475004  6/3/2015    Co-57        7.92E-Ol    7.12E-Ol    2.26E+OO u FH         OFS-S     374475004  6/3/2015    Co-58        4.02E-Ol    9.96E-Ol    3.34E+OO u FH         OFS-S     374475004  6/3/2015    Co-60        9.47E-Ol    l.18E+OO    3.83E+OO u FH         OFS-S     374475004  6/3/2015     Cr-51      -2.52E-Ol    8.87E+OO    2.96E+Ol u FH         OFS-S     374475004  6/3/2015    Cs-134      -4.12E-Ol    l.02E+OO    3.35E+OO u FH         OFS-S     374475004  6/3/2015    Cs-137       7.44E-Ol    2.08E+OO    3.26E+OO u FH         OFS-S     374475004' 6/3/2015     Fe-59      -4.09E+OO    2.74E+OO    7.93E+OO u FH         OFS-S     374475004  6/3/2015     1-131      -4.56E+OO    2.60E+OO    7.54E+OO u FH         OFS-S     374475004  6/3/2015     K-40        3.04E+03    l.50E+02    2.74E+Ol FH         OFS-S     374475004  6/3/2015    La-140      -l.54E+OO    1.58E+OO    4.82E+OO u FH         OFS-S     374475004  6/3/2015    Mn-54         l.09E-Ol   9.09E-Ol    3.04E+OO u FH         OFS-S     374475004  6/3/2015    Nb-95        2.42E+OO    2.13E+OO    3.22E+OO u D-46

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     ~TD.DEV.        MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         OFS-S     374475004  6/3/2015     Ru-103     -l.90E+OO    l.12E+OO    3.21E+OO u FH         OFS-S     374475004  6/3/2015     Ru-106     -3.57E+OO    8.54E+OO    2.70E+Ol u FH         OFS-S     374475004  6/3/2015     Sb-124      9.46E-Ol    2.40E+OO    7.0lE+OO u FH         OFS-S     374475004  6/3/2015     Sb-125      2.71E+OO    2.46E+OO    8.0lE+OO u FH         OFS-S     374475004  6/3/2015      Se-75      1.17E+OO    1.21E+OO    4.0lE+OO u FH         OFS-S     374475004  6/3/2015     Th-228     -3.35E+OO    2.90E+OO    5.67E+OO u FH         OFS-S     374475004  6/3/2015      Zn-65      5.20E-Ol    2.69E+OO    7.66E+OO u FH         OFS-S     374475004  6/3/2015      Zr-95      l.96E+OO    2.05E+OO    6.02E+OO u FH         SLM5WNW   377393001 7/16/2015     Ac-228     -2.38E+Ol    l.24E+Ol    3.22E+Ol u FH         SLM5WNW   377393001 7/16/2015   Ag-108m        l.12E-Ol   2.07E+OO    6.66E+OO u FH         SLM5WNW   377393001 7/16/2015   Ag-llOm       8.17E+OO    4.56E+OO    l.28E+Ol u FH         SLM5WNW   377393001 7/16/2015     i3a-140     l.25E+Ol    l.20E+Ol    4.IOE+Ol u FH         SLM5WNW   377393001 7/16/2015       B*e-7     3.llE+Ol    2.05E+Ol    6.66E+Ol u FH         SLM5WNW   377393001 7/16/2015     Ce-141     -2.59E+OO    3.94E+OO    l.17E+Ol u FH         SLMSWNW   377393001 7/16/2015     Ce-144     -l.31E+OO    l.35E+Ol    4.30E+Ol u FH         SLM5WNW   377393001 7/16/2015      Co-57      6.90E-01    l.66E+OO    5.36E+OO u FH         SLM5WNW   377393001 7/16/2015      Co-58     -2.19E+OO    3.07E+OO    7.98E+OO u FH         SLM5WNW   377393001 7/16/2015      Co-60      4.43E+OO    3.22E+OO     l.lOE+Ol u FH         SLM5WNW   377393001 7/16/2015      Cr-51      6.14E+OO    2.09E+Ol    6.91E+Ol u FH         SLM5WNW   377393001 7/16/2015     Cs-134      l.35E+OO    2.79E+OO    9.31E+OO u FH         SLM5WNW   377393001 7/16/2015     Cs-137      l.67E+Ol    4.83E+OO    8.75E+OO M FH         SLM5WNW   377393001 7/16/2015      Fe-59     -9.SSE-01    6.07E+OO    2.0lE+Ol u FH         SLM5WNW   377393001 7/16/2015      1-131     -3.42E-Ol    4.37E+OO     l.42E+Ol u FH         SLM5WNW   377393001 7/16/2015      K-40       3.73E+03    2.12E+02    6.82E+Ol FH         SLM5WNW   377393001 7/16/2015     La-140     -3.SOE+OO    3.82E+OO     l.06E+Ol u FH         SLM5WNW   377393001 7/16/2015      Mn-54      8.85E-Ol    2.25E+OO    7.48E+OO u FH         SLM5WNW   377393001 7/16/2015      Nb-95      2.83E+OO    2.51E+OO    8.48E+OO u FH         SLM5WNW   377393001 7/16/2015     Ru-103     -3.21E+OO    2.35E+OO    6.99E+OO u FH         SLM5WNW   377393001 7/16/2015     Ru-106     -1.13E+Ol    l.91E+Ol    6.06E+Ol u FH         SLM5WNW   377393001 7/16/2015     Sb-124      4.02E+OO    4.95E+OO     l.77E+Ol u FH         SLMSWNW   377393001 7/16/2015     Sb-125      l.69E+Ol    7.65E+OO    2.35E+Ol u FH         SLM5WNW   377393001 7/16/2015      Se-75     -1.07E+OO    2.63E+OO    8.54E+OO u FH         SLM5WNW   377393001 7/16/2015     Th-228      8.45E+OO    6.91E+OO     l.18E+Ol u FH         SLM5WNW   377393001 7/16/2015      Zn-65     -5.91E+OO    5.81E+OO     l.75E+Ol u FH         SLM5WNW   377393001 7/16/2015      Zr-95     -3.64E+OO    4.64E+OO     l.43E+Ol u FH         TRT5W     377393002 7/16/2015     Ac-228     -8.95E+OO    l.ISE+Ol    3.57E+Ol u FH         TRT5W     377393002 7/16/2015    Ag-108m     -l.09E+OO    l.82E+OO    5.65E+OO u FH         TRT5W     377393002 7/16/2015    Ag-llOm      2.09E+OO    3.12E+OO     l.07E+Ol u FH         TRTSW     377393002 7/16/2015     Ba-140      l.64E+Ol    1.21E+Ol    4.07E+Ol u FH         TRT5W     377393002 7/16/2015       Be-7      3.SOE+Ol    2.85E+Ol    5.98E+Ol u FH         TRT5,W    377393002 7/16/2015     Ce-141      6.75E+OO    4.71E+OO     l.35E+Ol u FH         TRT5W     377393002 7/16/2015     Ce-144     -4.42E+OO    l.41E+Ol    4.44E+Ol u FH         TRT5W     377393002 7/16/2015      Co-57      l.28E+OO    2.14E+OO    6.23E+OO u FH         TRT5W     377393002 7/16/2015      Co-58      2.17E+OO    2.39E+OO    7.49E+OO u FH         TRT5W     377393002 7/16/2015      Co-60      -3.25E-Ol   3.04E+OO    9.69E+OO u FH         TRT5W     377393002 7/16/2015      Cr-51      2.57E+Ol    2.14E+Ol    7.23E+Ol u FH         TRT5W     377393002 7/16/2015     Cs-134      4.42E+OO    2.58E+OO    9.53E+OO u FH         TRT5W     377393002 7/16/2015     Cs-137      l.13E+Ol    4.15E+OO     l.22E+Ol u FH         TRT5W     377393002 7/16/2015      Fe-59      5.77E+OO    5.67E+OO     l.94E+Ol u FH         TRT5W     377393002 7/16/2015      I-131     -3.89E+OO    5.18E+OO     l.62E+Ol u D-47

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         TRT5W     377393002 7/16/2015     K-40        2.66E+03    l.66E+02    6.IOE+Ol FH         TRT5W     377393002 7/16/2015    La-140       l.65E+OO    4.08E+OO    l.42E+OI u FH         TRT5W     377393002 7/16/2015    Mn-54       -2.42E+OO    2.27E+OO    6.68E+OO u FH         TRT5W     377393002 7/16/2015    Nb-95       -2.29E+OO    2.43E+OO    7.37E+OO u FH         TRT5W     377393002 7/16/2015    Ru-103      -3.65E+OO    2.73E+OO    7.67E+OO u FH         TRT5W     377393002 7/16/2015    Ru-106      -3.67E+OO    2.13E+Ol    6.72E+Ol u FH         TRT5W     377393002 7/16/2015    Sb-124      -2.35E+OO    5.63E+OO    l.76E+Ol u FH         TRT5W     377393002 7/16/2015    Sb-125       7.26E+OO    6.37E+OO    2.14E+Ol u FH         TRT5W     377393002 7/16/2015     Se-75       3.36E+OO    2.94E+OO    9.94E+OO u FH         TRT5W     377393002 7/16/2015    Th-228       2.12E-Ol    5.0IE+OO    l.37E+Ol u FH         TRT5W     377393002 7/16/2015     Zn-65       l.04E+OO    7.60E+OO    2.17E+Ol u FH         TRT5W     377393002 7/16/2015     Zr-95      -7.41E+OO    5.00E+OO    l.4IE+Ol u FH         OFS-N     377953001 7/23/2015    Ac-228      -6.96E+OO    6.46E+OO    l.38E+Ol u FH         OFS-N     377953001 7/23/2015   Ag-108m       l.42E+OO    8.78E-OI    2.78E+OO u FH         OFS-N     377953001 7/23/2015   Ag-llOm       4.BE-01     l.38E+OO    4.64E+OO u FH         OFS-N     377953001 7/23/2015    Ba-140       9.82E+OO    7.05E+OO    2.00E+Ol u FH         OFS-N     377953001 7/23/2015     Be-7        2.22E+OO    8.94E+OO    2.95E+Ol u FH         OFS-N     377953001 7123/2015    Ce-141       2.94E+OO    2.70E+OO    5.53E+OO u FH         OFS-N     377953001 7/23/2015    Ce-144      -3.36E+OO    5.96E+OO    l.90E+Ol u FH         OFS-N     377953001 7/23/2015    Co-57        l.29E+OO    8.2IE-Ol    2.55E+OO u FH         OFS-N     377953001 7123/2015    Co-58        8.64E-Ol    9.94E-Ol    3.35E+OO u FH         OFS-N*    377953001 7123/2015    Co-60        l.88E+OO    l.72E+OO    3.98E+OO u FH         OFS-N     377953001 7/23/2015     Cr-51      -2.73E+OO    9.62E+OO    3.21E+Ol U FH         OFS-N     377953001 7/23/2015    Cs-134      -l.21E+OO    l.07E+OO    3.36E+OO U FH         OFS-N     377953001 7/23/2015    Cs-137       7.58E+OO    l.55E+OO    3.53E+OO M FH         OFS-N     377953001 7/23/2015     Fe-59      -4.92E-Ol    2.81E+OO    7.97E+OO U FH         OFS-N     377953001 7/23/2015     I-131       3.21E+OO    2.67E+OO    8.76E+OO U FH         OFS-N     377953001 7/23/2015     K-40        2.90E+03    l.47E+02    2.83E+Ol FH         OFS-N     377953001 7/23/2015    La-140      -l.91E+OO    l.70E+OO    5.16E+OO u FH         OFS-N     377953001 7/23/2015    Mn-54       -l.59E+OO    l.42E+OO    3.IOE+OO u FH         OFS-N     377953001 7123/2015    Nb-95        l.18E+OO    l.04E+OO    3.47E+OO u FH         OFS-N     377953001 7/23/2015    Ru-103      -2.17E+OO    l.22E+OO    3.48E+OO u FH         OFS-N     377953001 7/23/2015    Ru-106       6.45E+OO    8.99E+OO    2.92E+Ol u FH         OFS-N     377953001 7123/2015    Sb-124       6.47E+OO    2.58E+OO    6.88E+OO u FH         OFS-N     377953001 7/23/2015    Sb-125       2.30E+OO    2.56E+OO    8.44E+OO u FH         OFS-N     377953001 7/23/2015     Se-75      -5.70E-Ol    l.25E+OO    4.18E+OO u FH         OFS-N     377953001 7/23/2015    Th-228       2.69E+OO    3.00E+OO    5.14E+OO u FH         OFS-N     377953001 7/23/2015     Zn-65      -8.0SE+OO    3.35E+OO    8.08E+OO u FH         OFS-N     377953001 7/23/2015     Zr-95       l.34E+OO    I.SOE+OO    6.09E+OO u FH         ONS-N     377953002 7123/2015    Ac-228      -l.94E+OO    6.63E+OO    l.59E+Ol u FH         ONS-N     377953002 7/23/2015   Ag-108m      -2.IOE+OO    1.1 IE+OO   2.95E+OO u FH         ONS-N     377953002 7/23/2015   Ag-llOm      -l.41E+OO    1.53E+OO    4.81E+OO u FH         ONS-N     377953002 7/23/2015    Ba-140       7.20E+OO    7.34E+OO    2.37E+Ol u FH         ONS-N     377953002 7/23/2015     Be-7       -9.98E+OO    9.93E+OO    3.05E+Ol u FH         ONS-N     377953002 7/23/2015    Ce-141       2.38E+OO    2.29E+OO    6.43E+OO u FH         ONS-N     377953002 7/23/2015    Ce-144       4.42E+OO    6.79E+OO    2.17E+Ol u FH         ONS-N     377953002 7/23/2015    Co-57        6.62E-Ol*   9.25E-01    2.95E+OO u FH         ONS-N     377953002 7/23/2015. Co-58       -l.25E+OO    l.21E+OO    3.79E+OO u FH         ONS-N     377953002 7123/2015    Co-60       -5.88E-Ol    l.42E+OO    4.49E+OO u FH         ONS-N     377953002 7/23/2015     Cr-51      -l.43E+Ol    l.16E+Ol    3.59E+Ol u D-48

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE      NUCLIDE          (pCi/kg)   (pCi/kg)   (pCi/kg)
FH         ONS-N     377953002  7/23/2015    Cs-134       2.34E+OO     1.33E+OO   4.23E+OO  u FH         ONS-N     377953002  7/23/2015    Cs-137       2.26E+Ol     3.36E+OO   3.86E+OO  M FH         ONS-N     377953002  7/23/2015     Fe-59      -6.0IE+OO     3.40E+OO   9.36E+OO  u FH         ONS-N     377953002  7/23/2015     I-131       3.96E+OO     3.07E+OO   9.91E+OO  u FH         ONS-N     377953002  7/23/2015     K-40        3.58E+03     l.67E+02   3.17E+Ol FH         ONS-N     377953002  7/23/2015    La-140      -l.86E+OO     l.99E+OO   6.lOE+OO  u FH         ONS-N     377953002  7/23/2015    Mn-54        5.68E-01     l.13E+OO   3.78E+OO  u FH         ONS-N     377953002  7/23/2015    Nb-95        l.88E+OO     l.27E+OO   4.15E+OO  u FH         ONS-N     377953002  7/23/2015    Ru-103      -8.28E-01     l.28E+OO   4.03E+OO  u FH         ONS-N     377953002  7/23/2015    Ru-106      -4.89E+OO     l.04E+Ol   3.25E+Ol  u FH         ONS-N     377953002  7/23/2015    Sb-124      -3.20E+OO     2.70E+OO   8.04E+OO  u FH         ONS-N     377953002  7/23/2015    Sb-125      -3.41E+OO     3.14E+OO   9.69E+OO  U FH         ONS-N     377953002  7/23/2015     Se-75      -1.34E+OO     l.45E+OO   4.65E+OO  U FH         ONS-N     377953002  7/23/2015    Th-228       7.54E-Ol     3.49E+OO   6.97E+oo* u FH         ONS-N     377953002  7/23/2015     Zn-65      -5.74E+OO     3.48E+OO   9.84E+OO  U FH         ONS-N     377953002  7/23/2015     Zr-95      -5.49E-Ol     2.06E+OO   6.82E+OO  U FH         ONS-S     377953003  7/23/2015    Ac-228       3.49E+OO     7.33E+OO   l.71E+Ol  U FH         ONS-S     377953003  7/23/2015   Ag-108m       l.31E+OO     9. l 7E-OI 2.91E+OO  U FH         ONS-S     377953003  7/23/2015   Ag-llOm      -5.23E-Ol     l.55E+OO   5.07E+OO  U FH         ONS-S     377953003  7/23/2015    Ba-140      -9.71E+OO     8.28E+OO   2.55E+OI  U FH         ONS-S     377953003  7123/2015     Be-7        l.08E+Ol
* l.OIE+Ol   3.34E+OI  U FH         ONS-S     377953003  7/23/2015    Ce-141      -l.82E+OO     2.70E+OO   6.04E+OO  u FH         ONS-S     377953003  7/23/2015    Ce-144      -3.39E-01     5.82E+OO   l.84E+OI  u FH         ONS-S     377953003  7/23/2015    Co-57        l.60E+OO     8.31E-OI   2.44E+OO  u FH         ONS-S     377953003  7/23/2015    Co-58        6. l 7E-01   l.28E+OO   4.0IE+OO  u FH         ONS-S     377953003  7/23/2015    Co-60        l.12E+OO     l.27E+OO   4.26E+OO  u FH         ONS-S     377953003  7/23/2015     Cr-51      -2.27E+OO     l.13E+OI   3.64E+OI  u FH         ONS-S     377953003  7/23/2015    Cs-134      -6.42E-OI     1.56E+OO   4.08E+OO  u FH         ONS-S     377953003  7/23/2015    Cs-137       3.88E+OO     2.0IE+OO   3.98E+OO  u FH         ONS-S     377953003  7/2.3/2015    Fe-59       6.50E+OO     3.44E+OO   l.05E+OI  u FH         ONS-S     377953003  7/23/2015     I-131       3.59E+OO     3.69E+OO   l.18E+OI  u FH         ONS-S     377953003. 7/23/2015     K-40        2.87E+03     1.38E+02   3.69E+Ol FH         ONS-S     377953003  7/23/2015    La-140       3:67E+OO     2.95E+OO   8.60E+OO  u FH         ONS-S     377953003  7/23/2015    Mn-54        l.43E+OO*    L29E+OO    3.73E+OO  u FH         ONS-S     377953003  7123/2015    Nb-95        5.35E-Ol     l.22E+OO   4.lOE+OO  u FH         ONS-S     377953003  7/23/2015    Ru-103      -1.39E+OO     l.46E+OO   3.97E+OO  u FH         ONS-S     377953003  7/23/2015    Ru-106      -8.15E+OO     9.51E+OO   2.97E+Ol  u FH         ONS-S     377953003  7/23/2015    Sb-124      -3.48E+OO     2.64E+OO   7.57E+OO  u FH         ONS-S     377953003  7/23/2015    Sb-125       8.26E-01     2.70E+OO   9.06E+OO  u FH         ONS-S     377953003  7/23/2015     Se-75      -l.43E+OO     l.38E+OO   4.31E+OO  u FH         ONS-S     377953003  7/23/2015    Th-228        l.94E-OI    3.41E+OO   5.28E+OO  u FH         ONS-S     377953003  7/23/2015     Zn-65      -l.72E+OO     2.99E+OO   9.49E+OO  u FH         ONS-S     377953003  7/23/2015     Zr-95       8.07E-OI     2.09E+OO   7.05E+OO  u FH         OFS-S     377953004  7123/2015    Ac-228      -1.31E+OO     5.32E+OO   l.42E+OI  u FH         OFS-S     377953004  7/23/2015   Ag-108m      -3.38E-OI     7.84E-OI   2.53E+OO  u FH         OFS-S     377953004  7/23/2015   Ag-llOm       2.12E-OI     1.37E+OO   4.55E+OO  u FH         OFS-S     377953004  7/23/2015    Ba-140       l.69E+OO     5.99E+OO   l.95E+Ol  u FH         OFS-S     377953004  7/23/2015     Be-7        8.00E+OO     8.02E+OO   2.61E+OI  u FH         OFS-S     377953004  7/23/2015    Ce-141       3.75E-OI     l.54E+OO   4.97E+OO  u FH         OFS-S     377953004  7/23/2015    Ce-144      -5.34E+OO     5.33E+OO   l.64E+Ol  u D-49

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         OFS-S     377953004 7/23/2015    Co-57        6.61E-02    6.89E-01    2.23E+OO u FH         OFS-S     377953004 7/23/2015    Co-58       -9.94E-01    l.19E+OO    3.27E+OO u FH         OFS-S     377953004 7/23/2015    Co-60        3.07E+OO    l.32E+OO    3.99E+OO u FH         OFS-S     377953004 7/23/2015     Cr-51       9.24E+OO    l.lOE+Ol    2.90E+Ol u FH         OFS-S     377953004 7/23/2015    Cs-134       1.70E-01    l.02E+OO    3.32E+OO u FH         OFS-S     377953004 7/23/2015    Cs-137       l.38E+OO    l.83E+OO    3.23E+OO u FH         OFS-S     377953004 7/23/2015     Fe-59       3.87E-02    2.43E+OO    7.93E+OO u FH         OFS-S     377953004 7/23/2015     I-131      -9.88E-01    2.35E+OO    7.67E+OO u FH         OFS-S     377953004 7/23/2015     K-40        2.68E+03    l.33E+02    2.70E+Ol FH         OFS-S     377953004 7/23/2015    La-140      -5.25E+OO    3.17E+OO    6.08E+OO u FH         OFS-S     377953004 7/23/2015    Mn-54       -8.45E-01    9.61E-01    3.05E+OO u FH         OFS-S     377953004 7/23/2015    Nb-95        9.09E-01    l.OOE+OO    3.36E+OO u FH         OFS-S     377953004 7/23/2015    Ru-103      -l.32E+OO    9.96E-01    2.96E+OO u FH         OFS-S     377953004 7/23/2015    Ru-106      -4.82E+OO    8.28E+OO    2.59E+Ol u FH         OFS-S     377953004 7/23/2015    Sb-124      -2.50E+OO    2.07E+OO    6.09E+OO u FH         OFS-S     377953004 7/23/2015    Sb-125       l.21E+OO    2.24E+OO    7.37E+OO u FH         OFS-S     377953004 7/23/2015     Se-75      -5.06E-01    1.llE+OO    3.69E+OO u FH         OFS-S     377953004 7/23/2015    Th-228       2.55E+OO    2.60E+OO    5.46E+OO u FH         OFS-S     377953004 7/23/2015    Zn-65       -3.18E+OO    2.54E+OO    7.56E+OO u FH         OFS-S     377953004 7/23/2015     Zr-95       4.49E+OO    2.09E+OO    6.43E+OO u D-50

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
SE         SL-2      371324001 411512015    Ac-228       l.72E+02    6.45E+Ol    l.30E+02 SE         SL-2      371324001 411512015   Ag-108m      -6.78E+OO    9.19E+OO
* 3.05E+Ol u SE         SL-2      371324001 411512015   Ag-llOm      -2.88E+Ol    l.67E+Ol    4.56E+Ol u SE         SL-2      371324001 411512015    Ba-140      -7.65E+Ol    5.50E+Ol    l.63E+02 u SE         SL-2      371324001 411512015     Be-7       -7.19E+Ol    l.03E+02    2.91E+02 u SE         SL-2      371324001 411512015    Ce-141       l.66E+Ol    l.38E+Ol    4.93E+Ol u SE         SL-2      371324001 411512015    Ce-144      -l.22E+OO    4.73E+Ol    l.70E+02 u SE         SL-2      371324001 411512015    Co-57       -l.37E+Ol    6.79E+OO    l.97E+Ol u SE         SL-2      371324001 411512015    Co-58       -7.70E+OO    l.31E+Ol    3.91E+Ol u SE         SL-2      371324001 411512015    Co-60        9.15E+OO    l.17E+Ol    4.08E+Ol u SE         SL-2      371324001 4/15/2015     Cr-51      -l.31E+OO    8.41E+Ol    3.02E+02 u SE         SL-2      371324001 4/15/2015    Cs-134       2.52E+Ol    l.43E+Ol    4.75E+Ol u SE         SL-2      371324001 4/15/2015    Cs-137      -8.44E-Ol    l.26E+Ol    4.20E+Ol u SE         SL-2      371324001 411512015     Fe-59      -7.52E+OO    2.56E+Ol    8.42E+Ol u SE         SL-2      371324001 411512015     1-131      -3.40E-Ol    l.53E+Ol    5.43E+Ol u SE         SL-2      371324001 411512015     K-40        6.57E+03    5.18E+02    2.75E+02 SE         SL-2      371324001 4/15/2015    La-140       3.84E+OO    l.58E+Ol    5.46E+Ol u SE         SL-2      371324001 4/15/2015    Mn-54        7.97E+OO    l.17E+Ol    4.16E+Ol u SE         SL-2      371324001 4/15/2015    Nb-95       -1.77E+Ol    1.37E+Ol    3.47E+Ol u SE         SL-2      371324001 4/15/2015    Ru-103       9.27E+OO    1.05E+Ol    3.72E+Ol u SE         SL-2      371324001 4/15/2015    Ru-106      -5.64E+Ol    l.04E+02    3.37E+02 u SE         SL-2      371324001 411512015    Sb-124      -5.85E+OO    2.60E+Ol    8.49E+Ol u SE         SL-2      371324001 4/15/2015    Sb-125      -l.56E+Ol    2.69E+Ol    9.04E+Ol u SE        SL-2       371324001 4/15/2015     Se-75       4.35E+OO    l.19E+Ol    4.lOE+Ol u SE        SL-2       371324001 4/15/2015    Th-228       1.25E+02    3.79E+Ol    5.52E+Ol SE        SL-2       371324001 4/15/2015    Zn-65        1.58E+Ol    3.08E+Ol    1.06E+02 u SE         SL-2      371324001 4/15/2015     Zr-95       8.14E+OO    l.97E+Ol    7.05E+Ol u SE         SL-3      371324002 4/15/2015    Ac-228       1.54E+02    4.51E+Ol    9.05E+Ol SE         SL-3      371324002 4/15/2015   Ag-108m       5.30E+OO    5.91E+OO    2.IIE+Ol u SE         SL-3      371324002 4/15/2015   Ag-llOm       l.30E+Ol    9.21E+OO    3.17E+Ol u SE         SL-3      371324002 4/15/2015    Ba-140       4.40E+Ol    3.30E+Ol    l.15E+02 u SE         SL-3      371324002 4/15/2015     Be-7        3.08E+Ol    6.78E+Ol    2.09E+02 u SE         SL-3      371324002 4/15/2015    Ce-141       2.26E+OO    l.07E+Ol    3.81E+Ol u SE         SL-3      371324002 4/15/2015    Ce-144      -3.98E+OO    3.92E+Ol    l.39E+02 u SE         SL-3      371324002 4/15/2015    Co-57        4.65E+OO    5.13E+OO    l.86E+Ol u SE        SL-3       371324002 411512015    Co-58        2.59E+OO    7.18E+OO    2.48E+Ol u SE        SL-3       371324002 4/15/2015    Co-60       -4.63E+OO    9.36E+OO    2.57E+Ol u SE        SL-3       371324002 411512015    Cr-51        2.45E+Ol    6.08E+Ol    2.13E+02 u SE        SL-3       371324002 4/15/2015    Cs-134       l.56E+Ol    9.0IE+OO    3.05E+Ol u SE        SL-3       371324002 4/15/2015    Cs-137       l.86E+Ol    8.58E+OO    2.85E+Ol u SE         SL-3      371324002 4/15/2015     Fe-59*     -l.31E-Ol    l.46E+Ol    4.94E+Ol u SE         SL-3      371324002 4/15/2015     1-131      -l.82E+OO    l.06E+Ol    3.80E+Ol u SE         SL-3      371324002 4/15/2015     K-40        6.20E+03    3.95E+02    l.60E+02 SE         SL-3      371324002 4/15/2015    La-140       l.84E+OO    l.06E+Ol    3.56E+Ol u SE         SL-3      371324002 4/15/2015    Mn-54       -3.15E+OO    7.22E+OO    2.38E+Ol u SE         SL-3      371324002 4/15/2015    Nb-95        4.69E+OO    7.42E+OO    2.59E+Ol u SE        SL-3       371324002 4/15/2015    Ru-103      -l.15E+Ol    7.13E+OO. 2.lOE+Ol u SE        SL-3       371324002 411512015    Ru-106      -3.47E+Ol    6.74E+Ol    1.96E+02 u SE        SL-3       371324002 4/15/2015    Sb-124       3.45E+Ol    l.66E+Ol    5.80E+Ol u SE        SL-3       371324002 4/15/2015    Sb-125      -7.05E+OO    l.85E+Ol    6.42E+Ol u D-51

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 SAMPLE                                END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION        LSN        DATE      NUCLIDE         (pCi/kg)   (pCi/kg)    (pCi/kg)
SE         SL-3       371324002   4/15/2015      Se-75     -2.71E+OO    8.42E+OO    2.94E+Ol u SE         SL-3       371324002 ' 4/15/2015     Th-228      2.00E+02    2.40E+Ol    3.90E+Ol SE         SL-3       371324002   4/15/2015     Zn-65      -l.37E+Ol    2.04E+Ol    5.49E+Ol u SE         SL-3       371324002   4/15/2015      Zr-95     -6.33E+OO    l.18E+Ol    3.88E+Ol u SE         SL-2       383226001   10/12/2015    Ac-228      l.11E+02    5.61E+Ol    1.41E+02 u SE         SL-2       383226001   10/12/2015  Ag-108m       8.92E-01    5.92E+OO    2.lOE+Ol u SE         SL-2       383226001   1011212015  Ag-JJOm       1.80E+Ol    1.lOE+Ol    3.71E+Ol u SE         SL-2       383226001   1011212015    Ba-140      5.73E+OO    3.33E+Ol    1.15E+02 u SE         SL-2       383226001   1011212015     Be-7       6.58E+Ol    5.63E+Ol    1.99E+02 u SE         SL-2       383226001   10/12/2015    Ce-141      2.04E+Ol    1.22E+Ol    4.19E+Ol u SE         SL-2       383226001   10/12/2015    Ce-144      2.64E+Ol    4.29E+Ol    1.37E+02 u SE         SL-2       383226001   10/12/2015    Co-57      -3.56E-01    5.67E+OO    1.79E+Ol u SE         SL-2       383226001   10/12/2015    Co-58       7.89E+OO    7.50E+OO    2.61E+Ol u SE         SL-2       383226001   10/12/2015    Co-60      -1.65E+Ol    9.70E+OO    2.36E+Oi u SE         SL-2       383226001   10/12/2015     Cr-51      8.88E+Ol    6.39E+Ol    2.22E+02 u SE         SL-2       383226001   10/12/2015    Cs-134      3.31E+OO    8.88E+OO    3.07E+Ol u SE         SL-2       383226001   10/12/2015    Cs-137     -2.68E+OO    7.28E+OO    2.49E+Ol u SE         SL-2       383226001   10/12/2015     Fe-59      4.39E+OO    1.82E+Ol    5.33E+Ol u SE         SL-2       383226001   10/12/2015     1-131      2.33E+Ol    1.17E+Ol    4.02E+Ol u SE         SL-2       383226001   10/12/2015     K-40       4.89E+03    3.40E+02    2.15E+02 SE         SL-2       383226001   10/12/2015    La-140      l.39E+Ol    l.24E+Ol    4.31E+Ol u SE         SL-2       383226001   10/12/2015    Mn-54      -5.12E+OO    7.42E+OO    2.40E+Ol u SE       - SL-2       383226001   10/12/2015    Nb-95       5.18E+OO    6.71E+OO    2.35E+Ol u
 .SE         SL-2       383226001   10/12/2015    Ru-103     -3.93E+OO    6.85E+OO    2.30E+Ol u SE         SL-2       383226001   10/12/2015    Ru-106      3.23E+Ol    5.54E+Ol    l.98E+02 u SE         SL-2     . 383226001   10/12/2015    Sb-124      l.46E+Ol    l.57E+Ol    5.48E+Ol u SE         SL-2       383226001   10/12/2015    Sb-125      l.75E+OO    l.78E+Ol    6.30E+Ol u SE         SL-2       383226001   10/12/2015     Se-75     -2.58E-01    8.46E+OO    3.00E+Ol u SE         SL-2       383226001   10/12/2015    Th-228      l.11E+02    2.97E+Ol    4.33E+Ol SE         SL-2       383226001   10/12/2015    Zn-65      -3.70E+Ol    2.60E+Ol    6.30E+Ol u SE         SL-2       383226001   10/12/2015     Zr-95      l.61E+Ol    l.24E+Ol    4.33E+Ol u SE         SL-3       383226002   10/12/2015    Ac-228      2.04E+02    7.62E+Ol     1.86E+02 UI SE         SL-3       383226002   10/12/2015   Ag-108m      5.03E-01    6.89E+OO    2.40E+Ol u SE         SL-3       383226002   10/12/2015   Ag-JJOm      4.52E+OO    l.l7E+Ol    4.04E+Ol u SE         SL-3       383226002   10/12/2015    Ba-140     -2.66E-01    3.80E+Ol     l.36E+02 u SE         SL-3       383226002   10/12/2015     Be-7      -7.53E+Ol    7.94E+Ol    2.49E+02 u SE         SL-3       383226002   10/12/2015    Ce-141     -1.lOE+Ol    1.lOE+Ol    3.73E+Ol u SE         SL-3       383226002   10/12/2015    Ce-144     -l.36E+Ol    3.91E+Ol     l.41E+02 u SE         SL-3       383226002   10/12/2015    Co-57       1.27E+OO    4.82E+OO     l.80E+Ol u SE         SL-3       383226002   10/12/2015    Co-58      -l.30E+Ol    9.39E+OO    2.64E+Ol u*
SE         SL-3       383226002   10/12/2015    Co-60       3.51E+Ol    l.17E+Ol    4.56E+Ol u SE         SL-3       383226002   10/12/2015     Cr-51     -3.58E+Ol    7.34E+Ol    2.56E+02 u SE         SL-3       383226002   10/12/2015    Cs-134      3.96E+OO    9.74E+OO    3.40E:+Ol u
 'SE         SL-3       383226002   10/12/2015    Cs-137      9.07E+OO    l.OOE+Ol    3.59E+Ol u SE         SL-3       383226002   10/12/2015     Fe-59      2.28E+Ol    2.25E+Ol    7.97E+Ol u SE         SL-3       383226002   10/12/2015     I-131     -2.29E+Ol    l.37E+Ol    3.97E+Ol u SE         SL-3       383226002   10/12/2015     K-40       5.22E+03    4.20E+02    2.73E+02 SE         SL-3       383226002   10/12/2015    La-140     -1.45E+Ol    l.39E+Ol    3.88E+Ol u SE         SL-3       383226002   10/12/2015    Mn-54       2.llE+Ol    1.llE+Ol    3.79E+Ol u SE         SL-3       383226002   10/12/2015    Nb-95       9.60E+OO    l.03E+Ol    3.63E+Ol u D-52

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.      MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/kg)   (pCi/kg)    (pCi/kg)
SE         SL-3      383226002 10/12/2015   Ru-103      -4.51E+OO    8.97E+OO    2.93E+Ol u SE         SL-3      383226002 10/12/2015   Ru-106      -l.16E+Ol    7.88E+Ol    2.74E+02 u SE         SL-3    . 383226002 10/12/2015   Sb-124      -3.76E+Ol    2.40E+Ol    5.74E+Ol u SE         SL-3      383226002 10/12/2015   Sb-125       3.49E+Ol    2.60E+Ol    9.17E+Ol u SE         SL-3      383226002 10/12/2015    Se-75       S.13E+OO    9.14E+OO    3.41E+Ol u SE         SL-3      383226002 10/12/2015   Th-228       l.18E+02    3.55E+Ol    7.12E+Ol UI SE         SL-3      383226002 10/12/2015   Zn-65       -1.78E+Ol    1.93E+Ol    5.84E+Ol u SE         SL-3      383226002 10/12/2015    Zr-95      -2.49E+Ol    1.67E+Ol    4.64E+Ol u D-53

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TF         ONS-G     381112008 9/11/2015    Ac-228       3.53E+OO    5.87E+OO    1.53E+Ol u TF         ONS-G     381112008 9/11/2015   Ag-108m      -6.lOE-01    8.87E-01    2.81E+OO u TF         ONS-G     381112008 9/11/2015   Ag-llOm      -l.29E+OO    1.38E+OO    4.31E+OO u TF         ONS-G     381112008 9/11/2015    Ba-140       6.68E+OO    4.61E+OO    1.47E+Ol u TF         ONS-G     381112008 9/11/2015     Be-7        3.76E+Ol    l.56E+Ol    2.77E+Ol TF         ONS-G     381112008 9/11/2015    Ce-141       1.32E+OO    1.67E+OO    4.79E+OO u TF         ONS-G     381112008 9/11/2015    Ce-144       2.09E+OO    5.88E+OO    l.90E+Ol u TF         ONS-G     381112008 9/11/2015     Co-57        l.52E-01   7.52E-01    2.44E+OO u TF         ONS-G     381112008 9/11/2015     Co-58       l.36E+OO    1.09E+OO    3.61E+OO u TF         ONS-G     381112008 9/11/2015     Co-60       3.49E-01    l.15E+OO    3.76E+OO u TF         ONS-G     381112008 9111/2015     Cr-51      -8.90E+OO    8.43E+OO    2.65E+Ol u TF         ONS-G     381112008 9/1112015    Cs-134       3.48E-01    l.15E+OO    3.87E+OO u TF         ONS-G     381112008 9/11/2015    Cs-137       2.70E+OO    1.28E+OO    4.02E+OO U TF         ONS-G     381112008 9/11/2015     Fe-59       l.33E+OO    2.40E+OO    7.92E+OO U TF         ONS-G     381112008 9/11/2015     I-131       2.22E-01    1.33E+OO    4.43E+OO U TF         ONS-G     381112008 9/11/2015     K-40        2.36E+03    1.22E+02    3.39E+Ol TF         ONS-G     381112008 9/11/2015    La-140       2.30E+OO    1.41E+OO    4.79E+OO u TF         ONS-G     381112008 9/11/2015    Mn-54        4.67E-01    1.04E+OO    3.50E+OO u TF         ONS-G     381112008 9/11/2015    Nb-95        1.IOE+OO    1.05E+OO    3.53E+OO u TF         ONS-G     381112008 9/11/2015    Ru-103       2.79E-02    9.82E-01    3.19E+OO u TF         ONS-G     381112008 9/11/2015    Ru-106       l.16E+OO    9.57E+OO    3.08E+Ol u TF         ONS-G     381112008 9/11/2015    Sb-124      -3.23E+OO    2.22E+OO    6.16E+OO u TF         ONS-G     381112008 9/11i2015    Sb-125       5.91E-01    2.66E+OO    8.78E+OO u TF         ONS-G     381112008 9/11/2015     Se-75       5. lSE-01   l.19E+OO    4.03E+OO u TF         ONS-G     381112008 9/11/2015    Th-228      2.42E+OO     2.SOE+,00   6.47E+OO u TF         ONS-G     381112008 9/1.1/2015   Zn-65       -9.02E+OO    3.55E+OO    7.86E+OO u TF         ONS-G     381112008 9/11/2015     Zr-95       2.48E+OO    1.89E+OO    6.28E+OO u TF         OFS-G     381112009 9/11/2015    Ac-228      -2.23E+Ol    l.05E+Ol    2.32E+Ol u TF         OFS-G     381112009 9111/2015   Ag-108m      -8.58E-01    1.61E+OO    4.36E+OO u TF         OFS-G     381112009 9/11/2015   Ag-llOm      -8.85E-01    2.33E+OO    7.46E+OO u TF         OFS-G     381112009 9/11/2015    Ba-140      -3.98E+OO    6.92E+OO    2.26E+Ol u TF         OFS-G     381112009 9/11/2015     Be-7        1.51E+02    2.50E+Ol    4.26E+Ol TF         OFS-G     381112009 9/11/2015    Ce-141      -1.82E+OO    2.59E+OO    8.46E+OO u TF         OFS-G     381112009 9/11/2015    Ce-144      -3.57E+OO    1.02E+Ol    3.39E+Ol u TF         OFS-G     381112009 9/11/2015     Co-57      -8.65E-01    1.69E+OO    4.45E+OO u TF         OFS-G     381112009 9/11/2015    Co-58        l.25E+OO    l.93E+OO    5.58E+OO U TF         OFS-G     381112009 9/11/2015    Co-60       -3.38E+OO    2.04E+OO    5.74E+OO U TF         OFS-G     381112009 9/11/2015     Cr-51      -l.79E+Ol    1.52E+Ol    4.60E+Ol U TF         OFS-G     381112009 9/11/2015    Cs-134      -l.13E+OO    1.98E+OO    5.90E+OO U TF         OFS-G     381112009 9/11/2015    Cs-137      -3.63E-02    1.67E+OO    5.52E+OO U TF         OFS-G     381112009 9/11/2015     Fe-59      -6.07E+OO    4.18E+OO    1.24E+Ol U TF         OFS-G     381112009 9/11/2015     I-131       l.15E+OO    2.25E+OO    7.30E+OO U TF         OFS-G     381112009 9/11/2015     K-40        4.05E+03    1.96E+02    5.21E+Ol TF         OFS-G     381112009 9/11/2015    La-140       4.74E-03    2.llE+OO    5.96E+OO u TF         OFS-G     381112009 9/11/2015    Mn-54       -1.62E+OO    1.67E+OO    5.13E+OO u TF         OFS-G     381112009 9/1112015    Nb-95        5.29E-02    l.62E+OO    5.32E+OO u TF         OFS-G     381112009 9/11/2015    Ru-103       l.13E+OO    1.62E+OO    5.49E+OO u TF         OFS-G     381112009 9/11/2015    Ru-106       l.86E+Ol    l.55E+Ol    5.12E+Ol u TF         OFS-G     381112009 9/11/2015    Sb-124      -5.91E+OO    4.60E+OO    1.18E+Ol u TF         OFS-G     381112009 9/11/2015    Sb-125      -3.59E+OO    4.52E+OO    l.39E+Ol u D-54

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE         (pCi/kg)   (pCi/kg)    (pCi/kg)
TF         OFS-G     381112009 9/11/2015    Se-75      -l.15E+OO    2.14E+OO    6.87E+OO u TF         OFS-G     381112009 9/11/2015   Th-228       6.04E-Ol  . 4.60E+OO    l.09E+Ol u TF         OFS-G     381112009 9/11/2015   Zn-65       -6.34E-Ol    4.34E+OO    l.45E+Ol u TF         OFS-G     381112009 9/11/2015    Zr-95       4.67E+OO    3.12E+OO    l.04E+Ol u D-55

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                     CONC      STD.DEV.        MDC      FLAGS TYPE      STATION       LSN        DATE     NUCLIDE         (pCi/kg)   (pCi/kg)    (pCi/kg)
TV         ONS2-V    375227001   6/15/2015   Ac-228       5.0lE+OO    1.59&#xa3;+01    3.88&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015  Ag-108m      -8.47&#xa3;-01    2.lOE+OO    6.72E+OO u TV.        ONS2-V    375227001   6/15/2015  Ag-llOm       7.16&#xa3;-01    3.30&#xa3;+00    1.08&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015   Ba-140      -2.28&#xa3;+01    1.39&#xa3;+01    2.85&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015    Be-7        1.42&#xa3;+03    7.74&#xa3;+01    6.53&#xa3;+01 TV         ONS2-V    375227001   6/15/2015   Ce-141       5.12&#xa3;-01    3.84&#xa3;+00    1.1 lE+Ol u TV         ONS2-V    375227001   6/15/2015   Ce-144      -4.87&#xa3;+00    1.39&#xa3;+01    4.48&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015   Co-57        7.68&#xa3;-02    1.83&#xa3;+00    5.97&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015   Co-58       -2.07&#xa3;+00    2.43&#xa3;+00    7.58&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015   Co-60        1.39&#xa3;+00    2.89&#xa3;+00    9.66&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015    Cr-51       8.12&#xa3;-01    1.89&#xa3;+01    6.26&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015   Cs-134      -5.49&#xa3;-01    2.61E+OO    8.50&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015   Cs-137       2.18E+OO    2.61E+OO    8.73&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015    Fe-59       7.29&#xa3;-01    4.97&#xa3;+00    1.67&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015    I-131      -3.llE+OO    4.07E+OO    8.87E+OO u TV         ONS2-V    375227001   6/15/2015    K-40        2.21E+03    1.37&#xa3;+02    8.42&#xa3;+01 TV         ONS2-V    375227001   6/15/2015   La-140      -1.05&#xa3;-01    3.39&#xa3;+00    9.39&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015   Mn-54        1.0lE-01    2.27E+OO    7.44&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015   Nb-95       -2.08&#xa3;+00    2.40&#xa3;+00    7.51E+OO u TV         ONS2-V    375227001   6/15/2015   Ru-103      -5.76&#xa3;-01    2.34&#xa3;+00    7.47&#xa3;+00 u TV         ONS2-V    375227001   6/15/2015   Ru-106       2.94&#xa3;+01    2.21E+Ol    7.32&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015   Sb-124       4.16&#xa3;+00    5.52&#xa3;+00    1.84&#xa3;+01 .u TV         ONS2-V    375227001   6/15/2015   Sb-125      -9.22&#xa3;+00    6.63&#xa3;+00    1.96&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015    Se-75 *    -5.82&#xa3;-01    3.0lE+OO    1.0lE+Ol U TV         ONS2-V    375227001   6/15/2015   Th-228       3.42&#xa3;+00    7.40&#xa3;+00    1.58&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015    Zn-65      -3.83&#xa3;+00    9.07E+OO    1.97&#xa3;+01 u TV         ONS2-V    375227001   6/15/2015    Zr-95      -6.52&#xa3;+00    4.37&#xa3;+00     l.27E+Ol U TV         ONS2-V    375227002   6/15/2015   Ac-228       l.OlE+Ol    2.87&#xa3;+01    5.24&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015  Ag-108m       1.14&#xa3;+00    2.88&#xa3;+00    9.66&#xa3;+00 u TV         ONS2-V    375227002   6/15/2015  Ag-1 lOm     -4.02&#xa3;+00    4.60&#xa3;+00    1.45&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015   Ba-140       2.05&#xa3;+01    l.41E+Ol    4.54&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015    Be-7        1.26&#xa3;+03    8.36&#xa3;+01    8.58&#xa3;+01 TV         ONS2-V    375227002   6/15/2015   Ce-141       1.36&#xa3;+01    5.60&#xa3;+00    1.62&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015   Ce-144       5.82&#xa3;+01    2.33&#xa3;+01    5.58&#xa3;+01 UI TV         ONS2-V    375227002   6115/2015    Co-57      -1.34&#xa3;+00    2.32&#xa3;+00    7.69&#xa3;+00 u TV         ONS2-V    375227002   6/15/2015    Co-58      -6.84&#xa3;-02    2.99&#xa3;+00     l.OOE+Ol u TV         ONS2-V    375227002   6/15/2015    Co-60      -1.15&#xa3;+00    3.76&#xa3;+00     1.24&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015    Cr-51       8.29&#xa3;+00    3.17&#xa3;+01    8.97&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015   Cs-134      -5.80&#xa3;+00    5.33&#xa3;+00     1.22&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015   Cs-137       5.70E+OO    5.57&#xa3;+00     1.08&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015    Fe-59       l.34E+Ol    8.79&#xa3;+00    2.48&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015    I-131      -2.47&#xa3;+00    4.08&#xa3;+00     1.35&#xa3;+01 u TV         ONS2-V    375227002 . 6/15/2015    K-40        3.96&#xa3;+03    2.18&#xa3;+02     1.11&#xa3;+02 TV         ONS2-V    375227002   6/15/2015   La-140       6.70&#xa3;+00    4.71E+OO     1.58&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015   Mn-54       -1.60&#xa3;+00    3.22&#xa3;+00     1.05&#xa3;+01 u TV         ONS2-V    375227002   6/15/2015   Nb-95        2.64&#xa3;+00    3.47&#xa3;+00     1.17&#xa3;+01 u D-56

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.        MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/kg)  (pCi/kg)     (pCi/kg)
TV         ONS2-V    375227002 6/15/2015   Ru-103       l.82E+OO    3.06E+OO     l.02E+Ol u TV         ONS2-V    375227002 6/15/2015   Ru-106      -5.83&#xa3;+00    2.92E+Ol     9.45&#xa3;+01 u TV         ONS2-V    375227002 6/15/2015   Sb-124       8.30&#xa3;+00    7.07E+OO     2.40&#xa3;+01 u TV         ONS2-V    375227002 6/15/2015   Sb-125      -6.llE+OO    8.57&#xa3;+00     2.78E+Ol u TV         ONS2-V    375227002 6/15/2015    Se-75       2.54E+OO    4.62E+OO     l.33E+Ol u TV         ONS2-V    375227002 6/15/2015   Th-228       2.76&#xa3;+00    1.09E+Ol     2.19E+Ol u TV         ONS2-V    375227002 6/15/2015   Zn-65       -6.90&#xa3;+00    8.29&#xa3;+00. 2.58E+Ol u TV         ONS2-V    375227002 6/15/2015    Zr-95      -9.34&#xa3;-01    5.97&#xa3;+00     1.91&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015   Ac-228       3.16&#xa3;+01    2.42E+Ol     4.02&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015  Ag-108m      -1.79&#xa3;+00    2.85&#xa3;+00     9.31E+OO u TV         ONS2-V    375227003 6/15/2015  Ag-1 lOm     -3.70&#xa3;+00    4.56E+OO     1.45&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015   Ba-140      -2.09&#xa3;+00    l.31E+Ol     4.31E+Ol u TV         ONS2-V    375227003 6/15/2015    Be-7*       8.79&#xa3;+02    6.56E+Ol     8.93E+Ol TV         ONS2-V    375227003 6/15/2015   Ce-141       1.76&#xa3;+00    4.70E+OO     1.41E+Ol u TV         ONS2-V    375227003 6/15/2015   Ce-144      -1.94&#xa3;+01    1.83&#xa3;+01     5.49&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015   Co-57       -1.04&#xa3;+00    2.18E+OO     6.82E+OO u TV         ONS2-V    375227003 6/15/2015   Co-58       -2.84&#xa3;-01    3.17E+OO     1.06&#xa3;+01 u TV         ONS2-V    375227003 611512015   Co-60        7.78&#xa3;+00    3.50&#xa3;+00     l.12E+Ol u TV         ONS2-V    375227003 6/15/2015    Cr-51      -2.68&#xa3;+01    2.67E+Ol     8.20&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015   Cs-134       l.70E+OO    3.80&#xa3;+00     1.28&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015   Cs-137       l.47E+Ol    8.66E+OO     1.20&#xa3;+01 UI TV         ONS2-V    375227003 6/15/2015    Fe-59      -2.04&#xa3;+00'   6.86&#xa3;+00     2.21E+Ol u TV         ONS2-V    375227003 6/1512015    1-131      -5.85&#xa3;+00    4.49&#xa3;+00     l.33E+Ol u TV         ONS2-V    375227003 6/15/2015    K-40       2.10&#xa3;+03     1.52&#xa3;+02     1.19&#xa3;+02 TV         ONS2-V    375227003 6/15/2015   La-140      2.79&#xa3;+00     4.54&#xa3;+00     l.52E+Ol u TV         ONS2-V    375227003 6/15/2015   Mn-54       -2.59&#xa3;+00    3.33&#xa3;+00     1.06&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015   Nb-95        3.33&#xa3;+00    3.34&#xa3;+00     1.12E+Ol u TV         ONS2*V    375227003 6/15/2015   Ru-103       l.86E+OO    3.14E+OO     l.05E+Ol u TV         ONS2-V    375227003 6/15/2015   Ru-106      -1.21&#xa3;+01    3.15&#xa3;+01     1.01&#xa3;+02 u TV         ONS2-V    375227003 6/15/2015   Sb-124       l.24E+Ol    8.04E+OO     2.66E+Ol u TV         ONS2-V    375227003 6/15/2015   Sb-125      -3.51&#xa3;-01    1.0lE+Ol     2.94&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015    Se-75      -2.05&#xa3;-01    3.89&#xa3;+00     1.27&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015   Th-228       5.87E+OO    1.07E+Ol     l.70E+Ol u TV         ONS2-V    375227003 6/15/2015   Zn-65       -1.20E+Ol    8.llE+OO     2.32&#xa3;+01 u TV         ONS2-V    375227003 6/15/2015    Zr-95       6.00E+OO    5.92&#xa3;+00    .l.99E+Ol u TV         ONSl-V    375227004 6/15/2015   Ac-228      3.72E+Ol     2.37E+Ol     4.76E+Ol u TV         ONSl-V    375227004 6/15/2015  Ag-108m      -4.02&#xa3;-01    2.52&#xa3;+00     8.40E+OO u TV         ONSl-V    375227004 6/15/2015  Ag-llOm      4.81&#xa3;+00     4.14&#xa3;+00     l.38E+Ol u TV         ONSl-V    375227004 6/15/2015   Ba-140       1.47E+Ol    1.22E+Ol     4.0IE+Ol u TV         ONSl-V    375227004 6/15/2015    Be-7        1.17&#xa3;+03    7.48E+Ol     7.82E+Ol TV         ONSl-V    375227004 6/15/2015   Ce-141       2.52E+OO    8.67&#xa3;+00     1.34&#xa3;+01 u TV         ONSl-V    375227004 6/15/2015   Ce-144      -4.53E+OO    1.64&#xa3;+01     5.52E+Ol u TV         ONSl-V    375227004 6/15/2015   Co-57        6.97&#xa3;+00    2.74E+OO     7.79E+OO u TV         ONSl-V    375227004 6/15/2015   Co-58        3.28E+OO    2.99E+OO     1.00E+Ol u TV         ONSl-V    375227004 6/15/2015   Co-60        7.00E+OO    3.90E+OO     1.15E+Ol u TV         ONSl-V    375227004 6/15/2015    Cr-51      -6.59&#xa3;+01    3.02E+Ol     7.92E+Ol u TV         ONSl-V    375227004 6/15/2015   Cs-134       2.80&#xa3;-01    3.47E+OO     1.17E+Ol u TV         ONSl-V . 375227004 6/15/2015   Cs-137       1.80&#xa3;+01    4.95&#xa3;+00     9.65E+OO M TV         ONSl-V    375227004 6/15/2015    Fe-59      -1.00E+Ol    8.41E+OO     2.12E+Ol u TV         ONSl-V    375227004 6/15/2015    1-131      -8.22&#xa3;+00    4.41E+OO     1.21E+Ol u D-57

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV          ONSl-V   375227004 611512015    K-40        3.34E+03    l.93E+02    9.llE+Ol TV          ONSl-V   375227004 611512015   La-140      -7.38E+OO    4.54E+OO    l.26E+Ol  u TV          ONSl-V   375227004 611512015   Mn-54        3.37E+OO    3.13E+OO    l.05E+Ol  u TV          ONSl-V   375227004 611512015   Nb-95       -9.40E-Ol    4.25E+OO    l.06E+Ol  u TV          ONSl-V   375227004 611512015   Ru-103      -5.45E-Ol    2.81E+OO    9.26E+OO  u TV          ONSl-V   375227004 611512015   Ru-106       l.66E+Ol    4.82E+Ol    8.80E+Ol  u TV          ONSl-V   375227004 611512015   Sb-124      -1.IOE+Ol    7.24E+OO    2.0IE+Ol  u TV          ONSl-V   375227004 611512015   Sb-125       3.91E+OO    7.61E+OO    2.56E+Ol  u TV          ONSl-V   375227004 611512015    Se-75       3.llE+OO    3.97E+OO    l.29E+Ol  u TV          ONSl-V   375227004 611512015   Th-228       9.64E+OO    8.71E+OO    l.69E+Ol  u TV          ONSl-V   375227004 611512015    Zn-65       2.19E-Ol    8.80E+OO    2.47E+Ol  u TV          ONSl-V   375227004 611512015    Zr-95       l.34E+Ol    5.72E+OO    l.62E+Ol  u TV          ONSl-V   375227005 611512015   Ac-228       l.75E+Ol    2.08E+Ol    3.45E+Ol  u TV          ONSl-V   375227005 611512015  Ag-108m      -l.61E+OO    2.02E+OO    6.47E+OO  u TV          ONSl-V   375227005 611512015  Ag-llOm       3.77E+OO    3.63E+OO    l.07E+Ol  u TV          ONSl-V   375227005 611512015   Ba-140       i.87E+Ol    l.05E+Ol    2.87E+Ol  u TV          ONSl-V   375227005 6/15/2015    Be-7        2.76E+03    1.29E+02    5.61E+Ol TV          ONSl-V   375227005 6/15/2015   Ce-141       4.58E+OO    3.70E+OO    l.09E+Ol  u TV          ONSl-V   375227005 6/15/2015   Ce-144       4.99E+OO    l.32E+Ol    3.99E+OI  u TV          ONSl-V   375227005 6/15/2015   Co-57        4.ISE-01    l.62E+OO    5.49E+OO  u TV          ONSl-V   375227005 6/15/2015   Co-58        l.78E+OO    2.22E+OO    7.48E+OO  u TV          ONSl-V   375227005 6/15/2015   Co-60       -6.88E+OO    5.37E+OO    7.81E+OO  u TV          ONSl-V   375227005 6/15/2015    Cr-51      -5.66E+OO    l.88E+OI    6.33E+Ol  u TV          ONSl-V   375227005 6/15/2015   Cs-134       7.63E-OI    2.53E+OO    8.55E+OO  u TV          ONSl-V   375227005 6/15/2015   Cs-137        l.23E-OI   2.71E+OO    8.07E+OO  u TV          ONSl-V   375227005 6/15/2015    Fe-59       3.35E+OO    4.70E+OO    l.55E+OI  u TV          ONSl-V   375227005 6/15/2015    1-131      -1.16E+OO    2.76E+OO    9.15E+OO  u TV          ONSl-V   375227005 6/15/2015    K-40        l.36E+03    l.06E+02    6.84E+OI TV          ONSl-V   375227005 6/15/2015   La-140      -6.65E+OO    4.75E+OO    l.02E+Ol  u TV          ONSl-V   375227005 6/l~/2015   Mn-54       -2.03E+OO    2.30E+OO    7.28E+OO  u TV          ONSl-V   375227005 6/15/2015   Nb-95        2.72E+OO    2.09E+OO    7.0IE+OO  u TV.         ONSl-V   375227005 6/15/2015   Ru-103      -l.31E+OO    3.64E+OO    7.02E+OO  u TV
* ONSl-V   375227005 6/15/2015   Ru-106      -2.12E+Ol    2.24E+Ol    6.83E+OI  u TV          ONSl-V   375227005 611512015   Sb-124      -7.03E-Ol    5.79E+OO     l.88E+Ol u TV          ONSl-V   375227005 6/15/2015   Sb-125      -9.75E+OO    6.43E+OO    l.92E+OI  u TV          ONSl-V   375227005 6/15/2015    Se-75       8.93E-OI    3.07E+OO    9.88E+OO  u TV          ONSl-V   375227005 6/15/2015   Th-228       1.19E+OI    7.98E+OO    l.52E+OI  u TV          ONSl-V   375227005 611512015    Zn-65       5.51E+OO    6.24E+OO     l.80E+OI u TV          ONSl-V   375227005 611512015    Zr-95      -3.47E+OO    3.78E+OO    1.20E+Ol  u TV          ONSl-V   375227006 611512015   Ac-228       6.47E+OO    l.79E+Ol    3.33E+OI  u TV          ONSl-V   375227006 611512015  Ag-108m      -2.52E+OO    2.08E+OO    6.17E+OO  u TV          ONSl-V   375227006 6/15/2015  Ag-llOm       l.88E+OO    3.67E+OO    1.IIE+Ol  u TV          ONSl-V   375227006 611512015   Ba-140      -l.02E-Ol    8.84E+OO    2.94E+OI  u TV          ONSl-V   375227006 611512015    Be-7        3.92E+02    3.87E+Ol    5.6IE+OI TV          ONSl-V   375227006 6/15/2015   Ce-141      -8.24E+OO    4.51E+OO    9.34E+OO  u TV          ONSl-V   375227006 6/15/2015   Ce-144       6.12E+OO    l.15E+Ol    3.72E+OI  u TV          ONSl-V   375227006 6/15/2015    Co-57       5.83E-Ol    1.47E+OO    4.SIE+OO  u TV          ONSl-V   375227006 611512015    Co-58      -3.95E-Ol    2.13E+OO    7.12E+OO  u TV          ONSl-V   375227006 6/15/2015    Co-60      -2.56E+OO    2.47E+OO    7.62E+OO  u TV          ONSl-V   375227006 611512015    Cr-51       5.15E+Ol    2.26E+Ol    6.19E+Ol  u D-58

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.      MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/kg)  (pCi/kg)   (pCi/kg)
TV         ONSl-V    375227006 6/15/2015   Cs-134 .      3.93E+OO    2.63E+OO   8.38E+OO  u TV         ONSl-V    375227006 6/15/2015   Cs-137        l.31E+OO    2.28E+OO   7.54E+OO  u TV         ONSl-V    375227006 6/15/2015    Fe-59        l.16E+Ol    6.llE+OO   l.89E+Ol  u TV         ONSl-V    375227006 6/15/2015    1-131        l.04E+OO    3.03E+OO   9.89E+OO  u TV         ONSl-V    375227006 6/15/2015    K-40         3.66E+03    l.88E+02   7.88E+Ol TV         ONSl-V    375227006 6/15/2015   La-140       -2.86E+OO    3.19E+OO   9.72E+OO  u TV         ONSl-V    375227006 6/15/2015   Mn-54         9.89E-02    2.06E+OO   6.93E+OO  u TV         ONSl-V    375227006 6/15/2015   Nb-95        -2.SOE+OO    3.lOE+OO   6.94E+OO  u TV         ONSl-V    375227006 6/15/2015   Ru-103        4.12E+OO    2.23E+OO   7.lOE+OO  u TV         ONSl-V    375227006 6/15/2015   Ru-106        9.08E+OO    l.91E+Ol   6.34E+Ol  u TV         ONSl-V    375227006 6/15/2015   Sb-124       -l.23E+OO    5.77E+OO   l.57E+Ol  u TV         ONSl-V    375227006 6/15/2015   Sb-125        l.91E+OO    5.74E+OO   l.85E+Ol  u TV         ONSl-V    375227006 6115/2015    Se-75        2.06E+OO    2.58E+OO   8.56E+OO  u TV         ONSl-V    375227006 6/15/2015   Th-228      -8.61E+OO     5.57E+OO   l.21E+Ol  u TV         ONSl-V    375227006 6/15/2015    Zn-65       -4.26E+OO    5.96E+OO   l.87E+Ol  u TV         ONSl-V    375227006 6/15/2015    Zr-95        l.24E+OO. 4.05E+OO   l.32E+Ol  u TV         OFSl-V    375227007 6/15/2015   Ac-228        2.91E+Ol    2.36E+Ol   4.42E+Ol  u TV         OFSl-V    375227007 6/15/2015  Ag-108m        3.09E+OO    2.74E+OO   8.29E+OO  u TV         OFSl-V    375227007 6/15/2015  Ag-1 lOm      -3.51E+OO    3.82E+OO   l.22E+Ol  u TV         OFSl-V    375227007 6/15/2015   Ba-140        l.82E+Ol    l.25E+Ol   3.97E+Ol  u TV         OFSl-V    375227007 6/15/2015    Be-7
* l.02E+03     6.61E+Ol   7.64E+Ol TV         OFSl-V    375227007 6/15/2015   Ce-141        l.87E+OO    4.50E+OO   l.47E+Ol  u TV         OFSl-V    375227007 6/15/2015   Ce-144       -l.36E+Ol    l.76E+Ol   5.73E+Ol  u TV         OFSl-V    375227007 6/15/2015   Co-57         9.05E-01    2.30E+OO   7.72E+OO  u TV         OFSl-V    375227007 6/15/2015   Co-58        -2.0IE+OO    4.38E+OO   9.49E+OO  u TV         OFSl-V    375227007 6/15/2015   Co-60        -l.73E+OO    2.99E+OO   9.60E+OO  u TV         OFSl-V    375227007 6/15/2015    Cr-51        l.29E+Ol    2.63E+Ol   8.69E+Ol  u TV         OFSl-V    375227007 6/15/2015   Cs-134        l.18E+OO    3.49E+OO   l.13E+Ol  u TV         OFSl-V    375227007 6/15/2015   Cs-137        3.98E+OO    3.39E+OO   l.09E+Ol  u TV         OFSl-V    375227007 6/15/2015    Fe-59       -6.16E+OO    5.73E+OO   l.77E+Ol  u TV         OFSl-V    375227007 6/15/2015    1-131        l.21E+OO    3.72E+OO   l.23E+Ol  u TV         OFSl-V    375227007 6/15/2015    K-40         3.39E+03    l.88E+02   9.17E+Ol TV         OFSl-V    375227007 6/15/2015   La-140         l.51E-01   4.20E+OO   l.19E+Ol  u       I TV         OFSl-V    375227007 6/15/2015   Mn-54         6.63E-01    4.40E+OO   8.16E+OO  u TV         OFSl-V    375227007 6/15/2015   Nb-95         9.21E-02    3.48E+OO   l.12E+Ol  u TV         OFSl-V    375227007 6/15/2015   Ru-103        9.57E-01    2.66E+OO   8.72E+OO  u TV         OFSl-V    375227007 6/15/2015   Ru-106        3.46E+OO    2.67E+Ol   8.68E+Ol  u TV         OFSl-V    375227007 6/15/2015   Sb-124       -l.98E+OO    6.47E+OO   2.09E+Ol  u TV         OFSl-V    375227007 6/15/2015   Sb-125        l.llE+Ol    l.16E+Ol   2.65E+Ol  u TV         OFSl-V    375227007 6/15/2015    Se-75        1.12E+OO    4.31E+OO    l.43E+Ol u TV         OFSl-V    375227007 6/15/2015   Th-228        6.52E+OO    9.81E+OO   2.08E+Ol  u TV         OFSl-V    375227007 6/15/2015    Zn-65       -5.07E+OO    6.66E+OO   2.13E+Ol  u TV         OFSl-V    375227007 6/15/2015    Zr-95       -3.49E+OO    6.lOE+OO   l.92E+Ol  u TV         ONS3-V    377009001 7/10/2015   Ac-228       -3.16E+Ol    2.14E+Ol   4.89E+Ol  u TV         ONS3-V    377009001 7/10/2015  Ag-108m        8.93E+OO    5.07E+OO    l.OIE+Ol u TV         ONS3-V    377009001 7/10/2015  Ag-llOm        2.21E+OO    3.65E+OO    l.05E+Ol u TV         ONS3-V    377009001 7/10/2015   Ba-140       -6.64E+OO    l.99E+Ol   4.83E+Ol  u TV         ONS3-V    377009001 7/10/2015    Be-7         l.49E+03    8.71E+Ol   9.00E+Ol TV         ONS3-V    377009001 7/10/2015   Ce-141        2.84E+OO    8.32E+OO    l.51E+Ol u TV         ONS3-V    377009001 7/10/2015   Ce-144       -2.87E+Ol    2.0IE+Ol   6.16E+Ol  u D-59

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC         FLAGS TYPE      STATION        LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV         ONS3-V     377009001 7/10/2015    Co-57        7.60E-02    2.38E+OO    7.92E+OO u TV         ONS3-V     377009001 7/10/2015    Co-58       -2.35E+OO    3.65E+OO    l.03E+Ol u TV         ONS3-V     377009001 7/10/2015    Co-60       -l.71E+OO    3.42E+OO    l.09E+Ol u TV         ONS3-V    .377009001 7/10/2015     Cr-51       l.88E+Ol    2.99E+Ol    9.60E+Ol u TV         ONS3-V     377009001 7/10/2015    Cs-134       2.86E+OO    4.44E+OO    l.26E+Ol u TV         ONS3-V     377009001 7/10/2015    Cs-137       2.55E+Ol    7.23E+OO    1.1 IE-i-Ol M TV         ONS3-V     377009001 7/10/2015     Fe-59      -8.24E+OO    7.09E+OO    2.17E+Ol u TV         ONS3-V     377009001 7/10/2015     I-131      -2.52E-Ol    5.24E+OO    l.54E+Ol u TV         ONS3-V     377009001 7/10/2015     K-40        4.16E+03    2.30E+02    l.06E+02 TV         ONS3-V     377009001 7/10/2015    La-140      -2.68E+OO    4.69E+OO    l.47E+Ol u TV         ONS3-V     377009001 7/10/2015    Mn-54        l.44E+OO    3.85E+OO    l.14E+Ol u TV         ONS3-V     377009001 7/10/2015    Nb-95       -2.46E+OO    4.06E+OO    l.09E+Ol u TV         ONS3-V     377009001 7/10/2015    Ru-103       2.33E+OO    3.30E+OO    l.IOE+Ol u TV         ONS3-V     377009001 7/10/2015    Ru-106      -3.05E-01    3.18E+Ol    l.04E+02 u TV         ONS3-V     377009001 7/10/2015    Sb-124      -7.76E+OO    7.70E+OO    2.28E+Ol u TV         ONS3-V     377009001 7/10/2015    Sb-125       l.46E+Ol    1.00E+Ol    2.87E+Ol u TV         ONS3-V     377009001 7/10/2015     Se-75      -2.56E+OO    4.31E+OO    l.37E+Ol u TV         ONS3-V     377009001 7/10/2015    Th-228      -l.23E+Ol    9.76E+OO    2.lOE+Ol u TV         ONS3-V     377009001 7/10/2015    Zn-65       -9.66E+OO    8.44E+OO    2.60E+Ol u TV         ONS3-V     377009001 7/10/2015     Zr-95      -l.81E+OO    5.71E+OO    l.83E+Ol u TV         ONS3-V     377009002 7/10/2015    Ac-228       6.23E+Ol    2.22E+Ol    4.lOE+Ol UI TV         ONS3-V     377009002 7/10/2015   Ag-108m      -l.18E+OO    2.15E+OO    6.96E+OO u TV         ONS3-V     377009002 7/10/2015   Ag-llOm      -3.0lE+OO    3.03E+OO    7.90E+OO u TV         ONS3-V    377009002  7/10/2015    Ba-140       l.81E+OO    1.05E+Ol    3.38E+Ol u TV         ONS3-V    377009002  7/10/2015     Be-7        l.41E+03    7.79E+Ol    6.87E+Ol TV         ONS3-V     377009002 7/10/2015    Ce-141       2.66E+OO    4.61E+OO    l.33E+OI u TV         ONS3-V    377009002  7/10/2015    Ce-144      -8.59E+OO    l.70E+Ol    4.80E+OI u TV         ONS3-V    377009002  7/10/2015    Co-57       -2.52E+OO    l.96E+OO    6.02E+OO u TV         ONS3-V     377009002 7/10/2015    Co-58       -2.33E+OO    2.81E+OO    7.64E+OO u TV         ONS3-V     377009002 7/10/2015    Co-60        6.77E-Ol    2.61E+OO    8.58E+OO u TV         ONS3-V     377009002 7/10/2015    Cr-51        5.22E+OI    2.20E+Ol    7.50E+Ol u TV         ONS3-V     377009002 7/10/2015    Cs-134        l.91E-OI   2.93E+OO    8.51E+OO u TV         ONS3-V     377009002 7/10/2015    Cs-137      -l.71E+OO    3.53E+OO    9.14E+OO u TV         ONS3-V     377009002 7/10/2015     Fe-59      -2.38E+OO    4.56E+OO    l.46E+OI u TV         ONS3-V     377009002 7/10/2015     I-131      -8.82E-03    3.81E+OO
* l.27E+Ol u TV         ONS3-V    377009002  7/10/2015     K-40        l.27E+03    9.75E+Ol    7.31E+Ol TV         ONS3-V    377009002  7/10/2015    La-140       l.63E+Ol    1.08E+Ol    l.24E+Ol UI TV         ONS3-V    377009002  7/10/2015    Mn-54       -2.14E-01    2.35E+OO    7.85E+OO u TV         ONS3-V    377009002  7/10/2015    Nb-95        3.96E+OO    2.71E+OO    8.60E+OO u TV         ONS3-V    377009002  7/10/2015    Ru-103       3.54E+OO    2.57E+OO    8.30E+OO u TV         ONS3-V    377009002  7/10/2015    Ru-106       7.74E+OO    2.63E+Ol    7.47E+Ol u TV         ONS3-V    377009002  7/10/2015    Sb-124       6.13E+OO    5.57E+OO    l.91E+Ol u TV         ONS3-V    377009002  7/10/2015    Sb-125       1.43E+OO    6.43E+OO    2.14E+Ol u TV         ONS3-V     377009002 7/10/2015     Se-75      -l.99E+OO    3.41E+OO    l.07E+Ol u TV         ONS3-V     377009002 7/10/2015    Th-228       4.66E+OO    8.13E+OO    l.52E+Ol u TV         ONS3-V     377009002 7/10/2015    Zn-65        5.23E+OO    5.59E+OO    l.63E+Ol u TV         ONS3-V    377009002  7/10/2015     Zr-95       l.95E+OO    4.30E+OO    l.40E+Ol u TV         ONS3-V    377009003  7/10/2015    Ac-228       3.55E+Ol    l.34E+Ol    3.72E+Ol u TV         ONS3-V    377009003  7/10/2015   Ag-108m      -3.09E+OO    2.57E+OO    7.61E+OO u TV         ONS3-V    377009003  7/10/2015   Ag-llOm      -7.92E-Ol    4.66E+OO    8.49E+OO u D-60

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC      STD.DEV.      MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)   (pCi/kg)   (pCi/kg)
TV         ONS3-V    377009003 7/10/2015    Ba-140      -2.34E+Ol     l.39E+Ol   3.96E+Ol u TV         ONS3-V    377009003 711012015     Be-7        l.17E+03     6.81E+Ol   7.58E+Ol TV         ONS3-V    377009003 7/10/2015    Ce-141       l.08E+Ol     5.09E+OO   l.41E+Ol u TV         ONS3-V    377009003 7/10/2015    Ce-144       3.46E+OO     1.68E+Ol   5.3IE+Ol u JV         ONS3-V    377009003 7/10/2015    Co-57         6.79E-02    2.47E+OO   7.20E+OO u TV         ONS3-V    377009003 7/10/2015    Co-58        3.70E+OO     3.25E+OO   9.16E+OO u TV         ONS3-V    377009003 7/10/2015    Co-60        4.llE+OO     3.05E+OO   l.OIE+Ol u TV         ONS3-V    377009003 7/10/2015     Cr-51      -4.62E+Ol     2.69E+Ol   7.83E+Ol u TV         ONS3-V    377009003 7/10/2015    Cs-134       l.55E+OO     3.72E+OO   9.87E+OO u TV         ONS3-V    377009003 7/10/2015    Cs-137       3.60E+OO     3.43E+OO   9.08E+OO u TV         ONS3-V    377009003 7/10/2015     Fe-59      -l.87E+OO     5.45E+OO   l.79E+Ol u TV         ONS3-V    377009003 7/10/2015     1-131      -6.46E+OO     4.47E+OO   l.34E+Ol u TV         ONS3-V    377009003 7/10/2015     K-40        2.56E+03     l.47E+02   8.90E+Ol TV         ONS3-V    377009003 7/10/2015    La-140        6.22E-01    3.98E+OO   1.32E+Ol u TV         ONS3-V    377009003 7110/2015    Mn-54        -4. l IE-01  2.65E+OO   8.89E+OO u TV         ONS3-V    377009003 7/10/2015    Nb-95        2.78E+OO     2.89E+OO   9.35E+OO u TV         ONS3-V    377009003 7/10/2015    Ru-103      -3.69E+OO     2.78E+OO   8.31E+OO u TV         ONS3-V    377009003 7/10/2015    Ru-106      -l.46E+Ol     2.44E+Ol   7.70E+Ol u TV         ONS3-V    377009003 7/10/2015    Sb-124       l.18E+Ol     7.05E+OO   2.lOE+Ol u TV         ONS3-V    377009003 7/10/2015    Sb-125       6.35E+OO     7.31E+OO   2.39E+Ol u TV         ONS3-V    377009003 7/10/2015     Se-75      -6.09E-02     3.95E+OO   l.14E+Ol u TV         ONS3-V    377009003 7/10/2015    Th-228       l.43E+OO     6.83E+OO   l.72E+Ol u TV         ONS3-V    377009003 7/10/2015    Zn-65       -l.16E+Ol     6.53E+OO   l.83E+Ol u TV         ONS3-V    377009003 7/10/2015     Zr-95      -7.20E+OO     5.38E+OO   1.57E+Ol u TV         ONSl-V    377009004 7110/2015    Ac-228      -1.55E+Ol     l.22E+Ol   2.84E+Ol u TV         ONSl-V    377009004 7/10/2015   Ag-108m      -l.47E+OO     l.79E+OO   5.77E+OO u TV         ONSl-V    377009004 7/10/2015   Ag-llOm      -9.68E-01     2.22E+OO   6.14E+OO u TV        ONSl-V     377009004 7/10/2015    Ba-140      -2.93E+OO     l.23E+Ol   3.0IE+Ol u TV         ONSl-V    377009004 7/10/2015     Be-7        4.93E+02     3.64E+Ol   5.31E+Ol TV         ONSl-V    377009004 7/10/2015    Ce-141       7:62E-01     6.40E+OO   9.56E+OO u TV         ONSl-V    377009004 7/10/2015    Ce-144       1.IOE+Ol     l.15E+Ol   3.78E+Ol u TV        ONSl-V     377009004 7/10/2015    Co-57        9.91E-Ol     I.42E+oo   4.70E+OO u TV         ONSl-V    377009004 7/10/2015    Co-58       -3.52E+OO     2.13E+OO   5.98E+OO u TV         ONSl-V    377009004 7/10/2015    Co-60        l.49E+OO     2.25E+OO   7.50E+OO u TV         ONSl-V    377009004 7/10/2015     Cr-51       4.46E-01     l.80E+Ol   5.77E+Ol u TV        ONSl-V     377009004 7/10/2015    Cs-134       l.56E+OO     2.25E+OO   7.35E+OO u TV         ONSl-V    377009004 7/10/2015    Cs-137       8.23E+OO     4.09E+OO   6.54E+OO UI TV         ONSl-V    377009004 7/10/2015     Fe-59      -l.85E+OO     4.25E+OO   1.39E+Ol u TV         ONSl-V    377009004 7/10/2015     1-131       6.42E+OO     3.34E+OO   l.04E+Ol u TV        ONSl-V     377009004 7/10/2015     K-40        2.77E+03     l.51E+02   6.68E+Ol TV         ONSl-V    377009004 7/10/2015    La-140       l.70E+OO     2.73E+OO   9.04E+OO u TV         ONSl-V    377009004 7/10/2015    Mn-54        5.23E+OO     2.56E+OO   6.86E+OO u TV        ONSl-V     377009004 7/10/2015    Nb-95       -8.74E-01     2.52E+OO   7.00E+OO u TV        ONSl-V     377009004 7/10/2015    Ru-103      -2.37E+OO     2.02E+OO   6.26E+OO u TV         ONSl-V    377009004 7/10/2015    Ru-106      -9.64E+OO     l.81E+Ol   5.81E+Ol u TV         ONSl-V    377009004 7/10/2015    Sb-124        7.74E-01    4.55E+OO   l.48E+Ol u TV        ONSl-V     377009004 7/10/2015    Sb-125      -9.6IE+OO     5.58E+OO   l.64E+Ol u TV        ONSl-V     377009004 7/10/2015     Se-75       2.66E+OO     2.78E+OO   8.26E+OO u TV         ONSl-V    377009004 7/10/2015    Th-228       4.83E+OO     5.91E+OO   l.28E+Ol u TV         ONSl-V    377009004 7/10/2015    Zn-65        l.07E+OO     5.lOE+OO   l.47E+Ol u D-61

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                        CONC     STD.DEV.      MDC      FLAGS TYPE      STATION       LSN        DATE      NUCLIDE           (pCi/kg)  (pCi/kg)   (pCi/kg)
TV         ONSl-V    377009004   7/10/2015       Zr-95      l.93E+OO    3.58E+OO   1.17E+Ol u TV         ONSl-V    377009005   7110/2015     Ac-228     -1.62E+Ol     1.77E+Ol   3.94E+Ol u TV         ONSl-V    377009005   7/10/2015   Ag-108m       -5.65E-02    2.26E+OO   7.28E+OO u TV         ONSl-V    377009005   7/10/2015   Ag-llOm      -l.62E+OO     2.51E+OO   8.lOE+OO u TV         ONSl-V    377009005   7110/2015     Ba-140     -1.69E+Ol     l.15E+Ol   3.50E+Ol u TV         ONSl-V    377009005   7/10/2015       Be-7      1.05E+03     6.27E+Ol _ 6.89E+Ol TV         ONSl-V    377009005   7110/2015     Ce-141      3.96E+OO     6.64E+OO   l.18E+Ol u TV         ONSl-V    377009005   7/10/2015     Ce-144     -2.50E+Ol     l.57E+Ol   4.5JE+Ol u TV         ONSl-V    377009005   7/10/2015      Co-57     -1.41E+OO     1.85E+OO   5.75E+OO u TV         ONSl-V    377009005   7/10/2015      Co-58     -3.92E+OO     2.95E+OO   7.39E+OO u TV         ONSl-V    377009005   7110/2015      Co-60     -5.24E+OO     3.23E+OO   7.49E+OO u TV         ONSl-V    377009005   7/10/2015       Cr-51    -3.08E+Ol     2.98E+Ol   7.16E+Ol u TV         ONSl-V    377009005   7110/2015     Cs-134      -1.99E-01    2.98E+OO   9.16E+OO u TV         ONSl-V    377009005   7/10/2015     Cs-137      4.86E+OO     2.96E+OO   9.44E+OO u TV         ONSl-V    377009005   7/10/2015     . Fe-59
* 8.31E+OO     5.97E+OO   l.83E+Ol u TV         ONSl-V    377009005   7110/2015       1-131    -5.43E+OO     4.03E+OO   1.21E+Ol u TV         ONSl-V    371009005   7/10/2015       K-40       l.11E+03    9.55E+Ol   8.37E+Ol TV
* ONSl-V    377009005   7/10/2015     La-140     -1.26E+OO     4.18E+OO   1.18E+Ol u TV         ONSl-V    377009005   7/10/2015      Mn-54      2.41E+OO     2.58E+OO   8.43E+OO u TV         ONSl-V    377009005   7110/2015      Nb-95      2.14E+OO     2.58E+OO   8.49E+OO u TV         ONSl-V    377009005   7110/2015     Ru-103      2.lOE+OO     2.48E+OO   8.33E+OO u TV         ONSl-V    377009005 . 7/10/2015     Ru-106     -4.94E+OO     2.25E+Ol   7.44E+Ol u TV         ONSl-V   '377009005   7110/2015     Sb-124      7.20E+OO     5.89E+OO   2.00E+Ol u TV         ONSl-V    377009005   7110/2015     Sb-125      6.69E+OO     7.63E+OO   2.16E+Ol u TV         ONSl-V    377009005   7/10/2015       Se-75     3.39E+OO     3.22E+OO   l.06E+Ol u TV         ONSl-V    377009005   7110/2015     Th-228      2.31E+Ol     7.52E+OO   l.36E+Ol TV         ONSl-V    377009005   7/10/2015      Zn-65     -9.99E+OO     6.28E+OO   l.82E+Ol u TV         ONSl-V    377009005   7110/2015       Zr-95     5.24E+OO     4.45E+OO   1.45E+Ol u TV         ONSl-V    377009006   7110/2015     Ac-228     -7.96E+OO     l.36E+Ol   2.50E+Ol u TV         ONSl-V    377009006   7/10/2015   Ag-108m      -1.87E+OO     l.73E+OO   5.23E+OO u TV         ONSl-V    377009006   7/10/2015   Ag-1 lOm     -8.43E+OO     2.77E+OO   5.74E+OO u TV         ONSl-V    377009006   7/10/2015   . Ba-140     -3.14E+Ol     l.37E+Ol   2.58E+Ol u TV         ONSl-V    377009006   7110/2015       Be-7      3.35E+02     3.24E+Ol   5.24E+Ol TV         ONSl-V    377009006   7/10/2015     Ce-141      6.15E+OO     3.32E+OO   9.30E+OO u TV         ONSl-V    377009006   7/10/2015     Ce-144     -1.12E+Ol     l.03E+Ol   3.34E+Ol u TV         ONSl-V    377009006   7110/2015      Co-57      l.64E+OO     l.45E+OO   4.53E+OO u TV         ONSl-V    377009006   7110/2015      Co-58      -6.86E-01    2.06E+OO   6.20E+OO u TV         ONSl-V    377009006   7110/2015      Co-60      -5.25E-01    2.34E+OO   6.49E+OO u TV         ONSl-V    377009006   7110/2015       Cr-51    -7.52E+OO     l.62E+Ol   5.21E+Ol u TV         ONSl-V    377009006   7110/2015     Cs-134      2.48E+OO     2.26E+OO   6.73E+OO u TV         ONSl-V    377009006   7110/2015     Cs-137     -5.97E+OO     3.53E+OO   7.90E+OO u TV         ONSl-V    377009006   7/10/2015       Fe-59     -4.40E-01    4.82E+OO   1.47E+Ol u TV         ONSl-V    377009006   7/10/2015       I-131    -2.81E+OO     2.85E+OO   8.77E+OO u TV         ONSl-V    377009006   7110/2015       K-40      3.74E+03     1.85E+02   6:05E+Ol TV         ONSl-V    3~7009006   7/10/2015     La-140       3.16E-01    2.70E+OO   8.79E+OO u TV         ONSl-V    377009006   7110/2015      Mn-54      -2.56E-01    1.81E+OO   5.85E+OO u TV         ONSl-V    377009006   7110/2015      Nb-95      3.05E+OO     2.06E+OO   6.58E+OO u TV         ONSl-V    377009006   7110/2015     Ru-103      -2.39E-01    l.76E+OO   5.88E+OO u TV         ONSl-V    377009006   7110/2015     Ru-106     -1.06E+OO     l.69E+Ol   5.59E+Ol u TV         ONSl-V    377009006   7110/2015     Sb-124      7.0lE+OO     4.12E+OO   l.38E+Ol u D-62

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN        DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV         ONSl-V    377009006   7/10/2015    Sb-125       7.41E+OO   .5.15E+OO    1.61E+Ol u TV         ONSl-V    377009006   7/10/2015     Se-75       2.85E+OO    2.37E+OO    7.67E+OO u TV         ONSl-V    377009006   7/10/2015    Th-228        7.62E-01   5.75E+OO    1.05E+Ol u TV         ONSl-V    377009006   7/10/2015    Zn-65       -5.85E+OO    4.87E+OO    1.49E+Ol u TV         ONSl-V    377009006   7110/2015     Zr-95      -1.83E+OO    3.34E+OO    l.06E+Ol u TV         OFSl-V    377009007   7/10/2015    Ac-228       2.09E+Ol    1.43E+Ol    2.60E+Ol u TV         OFSl-V    377009007   7/10/2015   Ag-108m      -l.32E+OO    1.75E+OO    5.55E+OO u TV         OFSl-V    377009007   7/10/2015   Ag-JI Om      2.04E+OO    2.17E+OO    6.47E+OO u TV         OFSl-V    377009007   7/10/2015    Ba-140       3.95E+OO    9.02E+OO    2.95E+Ol u TV         OFSl-V    377009007   7/10/2015     Be-7        9.38E+02    5.63E+Ol    5.54E+Ol TV         OFSl-V    377009007   7/10/2015    Ce-141       3.21E+OO    3.llE+OO    9.98E+OO u TV         OFSl-V    377009007   7/10/2015    Ce-144       3.13E+OO    1.08E+Ol    3.54E+Ol u TV        OFSl-V     377009007   7/10/2015    Co-57       -9.19E-01    1.45E+OO    4.65E+OO u TV        OFSl-V     377009007   7/10/2015    Co-58       -1.03E+OO    2.08E+OO    6.39E+OO u TV        OFSl-V     377009007   7/10/2015    Co-60        -4.14E-02   2.16E+OO    7.25E+OO u TV        OFSl-V     377009007   7/10/2015     Cr-51       2.73E+Ol    1.79E+Ol    5.80E+Ol u TV         OFSl-V    377009007   7/10/2015    Cs-134       l.82E+OO    2.40E+OO    7.llE+OO u TV        OFSl-V     377009007   7/10/2015    Cs-137       4.88E+OO    3.05E+OO    6.91E+OO u TV         OFSl-V    377009007   7110/2015     Fe-59      -2.99E+OO    4.36E+OO    l.36E+Ol u TV         OFSl-V    377009007 . 7/10/2015     I-131       2.12E+OO    3.06E+OO    l.02E+Ol u TV         OFSl-V    377009007   7/10/2015     K-40        3.26E+03    1.71E+02    6.13E+Ol TV         OFSl-V    377009007   7/10/2015    La-140      -2.14E+OO    2.90E+OO    9.07E+OO u TV         OFSl-V    377009007   7/10/2015    Mn-54        -7.37E-01   2.16E+OO    7.lOE+OO u TV        OFSl-V     377009007   7/10/2015    Nb-95        3.47E+OO    2.24E+OO    7.29E+OO u TV        OFSl-V     377009007   7/10/2015    Ru-103      -1.98E-01    1.93E+OO    6.26E+OO u TV        OFSl-V     377009007   7/10/2015    Ru-106       3.17E+OO    1.78E+Ol    5.75E+Ol u TV        OFSl-V     377009007   7/10/2015    Sb-124       1.17E+OO    5.19E+OO    l.49E+Ol u TV        OFSl-V     377009007   7/10/2015    Sb-125      -2.09E-01    5.29E+OO    1.74E+Ol u TV        OFSl-V     377009007   7/10/2015     Se-75      -1.58E+OO    2.48E+OO    8.22E+OO u TV        OFSl-V     377009007   7/10/2015    Th-228       8.23E+OO    6.26E+OO    1.llE+Ol u TV        OFSl-V     377009007   7/10/2015    Zn-65        2.85E+OO    5.31E+OO    l.74E+Ol u TV        OFSl-V     377009007   7/10/2015     Zr-95      -7.81E-Ol    3.49E+OO    l.16E+Ol u TV        ONS3-V     379410001   8/13/2015    Ac-228       1.58E+Ol    2.39E+Ol    5.27E+Ol u TV        ONS3-V     379410001   8/13/2015   Ag-108m      -5.34E-01    2.77E+OO    8.90E+OO u TV        ONS3-V     379410001   8/13/2015   Ag-llOm      -2.40E+OO    4.64E+OO    1.47E+Ol u TV        ONS3-V     379410001   8/13/2015    Ba-140       l.84E+OO
* 1.52E+Ol    4.47E+Ol u TV        ONS3-V     379410001   8/13/2015     Be-7        l.84E+03    1.09E+02    8.45E+Ol TV        ONS3-V     379410001   8/13/2015    Ce-141       1.21E+Ol    7.60E+OO    1.14E+Ol UI TV        ONS3-V     379410001   8/13/2015    Ce-144      -8.17E+OO    1.53E+Ol    4.79E+Ol u TV        ONS3-V     379410001   8/13/2015    Co-57        5.49E-01    1.89E+OO    6.07E+OO u TV        ONS3-V     379410001   8/13/2015    Co-58        5.73E+OO    3.72E+OO    1.07E+Ol u TV        ONS3-V     379410001   8/13/2015    Co-60        2.95E+OO    3.86E+OO    l.30E+Ol u TV        ONS3-V     379410001   8/13/2015     Cr-51      -1.28E+Ol    2.57E+Ol    8.32E+Ol u TV        ONS3-V     379410001   8113/2015    Cs-134       4.78E+OO    4.54E+OO    l.25E+Ol u TV        ONS3-V     379410001   8/13/2015    Cs-137       4.67E+OO    5.39E+OO    1.llE+Ol u TV        ONS3-V     379410001   8/13/2015     Fe-59       1.23E+Ol    7.71E+OO    2.53E+Ol u TV        ONS3-V     379410001   8/13/2015     1-131       1.54E+OO    4.31E+OO    l.42E+Ol u TV        ONS3-V     379410001   8/13/2015     K-40        2.89E+03    1.71E+02    1.07E+02 TV        ONS3-V     379410001   8/13/2015    La-140      -6.89E+OO    4.95E+OO    l.39E+Ol u TV        ONS3-V     379410001   8113/2015    Mn-54       -3.38E+OO    3.38E+OO    1.04E+Ol u TV        ONS3-V     379410001   8/13/2015    Nb-95        5.23E-01    3.42E+OO    1.13E+Ol u TV        ONS3-V     379410001   8/13/2015    Ru-103      -8.99E-03    3.llE+OO    9.94E+OO u TV        ONS3-V     379410001   8/13/2015    Ru-106       5.13E+Ol   *3.16E+Ol    l.02E+02 u TV        ONS3-V     379410001   8/13/2015    Sb-124      -6.87E+OO    7.69E+OO    2.29E+Ol u TV        ONS3-V     379410001   8/13/2015    Sb-125      -1.19E+Ol    8.72E+OO    2.56E+Ol u TV        ONS3-V     379410001   8/13/2015     Se-75      -3.54E+OO    5.09E+OO    l.22E+Ol u D-63

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV         ONS3-V    379410001 8/13/2015     Th-228     -l.66E+Ol    9.89E+OO    l.99E+Ol u TV         ONS3-V    379410001 8/13/2015     Zn-65      -l.05E+Ol    8.71E+OO    2.68E+Ol u TV         ONS3-V    379410001 8/13/2015      Zr-95       2.61E-Ol   6.22E+OO    2.05E+Ol u TV         ONS3-V    379410002 8/13/2015     Ac-228      4.85E+OO    l.36E+Ol    3.84E+Ol u TV         ONS3-V    379410002 8/13/2015   Ag-108m       -8.57E-Ol   2.44E+OO    6.99E+OO u TV         ONS3-V    379410002 8/13/2015   Ag-1 lOm     -4.50E+OO    3.62E+OO    l.07E+Ol u TV         ONS3-V    379410002 8./13/2015    Ba-140      l.16E+Ol    l.05E+Ol    3.44E+Ol u TV         ONS3-V    379410002 8/13/2015      Be-7       l.39E+03    7.86E+Ol    6.97E+Ol TV         ONS3-V    379410002 8/13/2015     Ce-141     -2.0lE+Ol    7.98E+OO    l.15E+Ol u TV         ONS3-V    379410002 8/13/2015     Ce-144     -l.94E+OO    l.40E+Ol    4.47E+Ol u TV         ONS3-V    379410002 8/13/2015     Co-57       3.62E+OO    l.92E+OO    5.61E+OO u TV         ONS3-V    379410002 8/13/2015     Co-58       3.17E+OO    2.70E+OO    7.66E+OO U TV         ONS3-V    379410002 8/13/2015     Co-60       4.67E+OO    4.51E+OO    9.35E+OO U TV         ONS3-V    379410002 8/13/2015      Cr-51     -2.72E+Ol    2.27E+Ol    6.83E+Ol U TV         ONS3-V    379410002 8/13/2015     Cs-134      3.93E+OO    3.08E+OO    9.36E+OO U TV         ONS3-V    379410002 8/13/2015     Cs-137      7.90E+OO    3.llE+OO    8.24E+OO U TV         ONS3-V    379410002 8/13/2015      Fe-59       7.70E-Ol   5.07E+OO    l.69E+Ol U TV         ONS3-V    379410002 8/13/2015      I-131     -5.51E-Ol    3.15E+OO    l.06E+Ol U TV         ONS3-V    379410002 8/13/2015      K-40       2.66E+03    l.53E+02    8.09E+Ol TV         ONS3-V    379410002 8/13/2015     La-140     -2.06E+OO    4.04E+OO    l.07E+Ol u TV         ONS3-V    379410002 8/13/2015     Mn-54       3.53E-Ol    2.40E+OO    7.80E+OO u TV         ONS3-V    379410002 8/13/2015     Nb-95       l.16E+OO    2.46E+OO    8.05E+OO u TV         ONS3-V    379410002 8/13/2015     Ru-103      3.96E+OO    2.52E+OO    8.07E+OO u TV         ONS3-V    379410002 8/13/2015     Ru-106     -4.14E+OO    2.19E+Ol    7.15E+Ol u TV         ONS3-V    379410002 8/13/2015     Sb-124     -6.45E+OO    6.41E+OO    l.57E+Ol u TV         ONS3-V    379410002 8/13/2015     Sb-125      9.30E-01    6.33E+OO    2.13E+Ol u TV         ONS3-V    379410002 8/13/2015      Se-75      8.32E-Ol    3.15E+OO    l.02E+Ol u TV         ONS3-V    379410002 8/13/2015     Th-228     -2.02E+OO    6.82E+OO    l.58E+Ol u TV         ONS3-V    379410002 8/13/2015     Zn-65      -l.31E+Ol    6.58E+OO    l.77E+Ol u TV         ONS3-V    379410002 8/13/2015      Zr-95      1.32E+OO    4.26E+OO    l.39E+Ol u TV         ONS3-V    379410003 8/13/2015     Ac-228      3.36E+Ol    2.70E+Ol    4.98E+Ol u TV         ONS3-V    379410003 8/13/2015   Ag-108m
* l.76E-Ol   2.80E+OO    9.34E+OO u TV         ONS3-V    379410003 8/13/2015   Ag-llOm      -6.l lE-01   4.85E+OO    l.59E+Ol u TV         ONS3-V    379410003 8/13/2015   . Ba-140      8.77E+OO    l.36E+Ol    4.48E+Ol u TV         ONS3-V    379410003 8/13/2015      Be-7       2.62E+03    l.33E+02    8.54E+Ol TV         ONS3-V    379410003 8/13/2015     Ce-141      2.25E-Ol    4.65E+OO    l.39E+Ol u TV         ONS3-V    379410003 8/13/2015     Ce-144     -8.61E+OO    l.57E+Ol    5.23E+Ol u TV         ONS3-V    379410003 8/13/2015     Co-57       l.14E+OO    2.03E+OO    6.42E+OO u TV         ONS3-V    379410003 8/13/2015     Co-58      -l.35E+OO    3.28E+OO    l.07E+Ol u TV         ONS3-V    379410003 8/13/2015     Co-60      -l.94E-Ol    3.77E+OO    l.24E+Ol u TV         ONS3-V    379410003 8/13/2015      Cr-51      l.34E+Ol    2.86E+Ol    9.20E+Ol u TV         ONS3-V    379410003 8/13/2015     Cs-134     -l.25E+OO    4.06E+OO    l.34E+Ol u TV         ONS3-V    379410003 8/13/2015     Cs-137      9.45E+OO    4.99E+OO    l.18E+Ol u TV         ONS3-V    379410003 8/13/2015      Fe-59      6.23E+OO    5.94E+OO    2.69E+Ol u TV         ONS3-V    379410003 8/13/2015      1-131     -l.19E+OO    4.32E+OO    l.44E+Ol u TV         ONS3-V    379410003 8/13/2015      K-40       5.67E+03    3.16E+02    l.01E+02 TV         ONS3-V    379410003 8/13/2015     La-140      4.87E-02    5.65E+OO    l.56E+Ol u TV         ONS3-V    379410003 8/13/2015     Mn-54       2.99E+OO    3.58E+OO    l.19E+Ol u TV         ONS3-V    379410003 8/13/2015     Nb-95      -5.78E+OO    5.21E+OO    l.21E+Ol u TV         ONS3-V    379410003 8/13/2015     Ru-103     -3.12E-Ol    3.12E+OO    l.03E+Ol u TV         ONS3-V    379410003 8/13/2015     Ru-106      4.52E+Ol    3.26E+Ol    l.04E+02 u TV         ONS3-V    379410003 8/13/2015     Sb-124     -l.20E+Ol    7.49E+OO    2.09E+Ol u TV         ONS3-V    379410003 8/13/2015     Sb-125      7.28E+OO    8.75E+OO    2.91E+Ol u TV         ONS3-V    379410003 8/13/2015      Se-75      2.37E+OO    4.27E+OO    l.39E+Ol u TV         ONS3-V    379410003 8/13/2015     Th-228      9.61E-02    9.48E+OO    l.93E+Ol u TV         ONS3-V    379410003 8/13/2015     Zn-65      -3.28E+Ol    l.36E+Ol    2.60E+Ol u TV         ONS3-V    379410003 8/13/2015      Zr-95     -4.87E+OO    6.22E+OO    2.00E+Ol u D-64

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE     STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV         ONSl-V    379410004 8/13/2015    Ac-228       2.24E+Ol    1.83E+Ol    3.58E+Ol u TV         ONSl-V    379410004 8/13/2015   Ag-108m      -4.58E+OO    2.29E+OO    6.16E+OO u TV         ONSl-V    379410004 8/13/2015   Ag-llOm      -l.05E+OO    3.14E+OO    1.00E+Ol u TV         ONSl-V    379410004 8/13/2015    Ba-140      -2.92E+OO    9.32E+OO    3.lOE+Ol u TV         ONSl-V    379410004 8/13/2015     Be-7        l.59E+03    8.46E+Ol    6.12E+Ol TV         ONSl-V    379410004 8/13/2015    Ce-141       3.53E+OO    3.92E+OO    l.lOE+Ol u TV         ONSl-V    379410004 8/13/2015    Ce-144      -1.42E+Ol    l.33E+Ol    4.05E+Ol u TV         ONSl-V    379410004 8/13/2015     Co-57       1.71E+OO    l.65E+OO    5.22E+OO u TV         ONSl-V    379410004 8/13/2015    Co-58       -3.64E+OO    2.65E+OO    6.61E+OO u TV         ONSl-V    379410004 8/13/2015    Co-60       -4.66E+OO    3.25E+OO    7.94E+OO u TV         ONSl-V    379410004 8/13/2015     Cr-51      -6.82E+OO    1.90E+Ol    6.17E+Ol u TV         ONSl-V    379410004 8/13/2015    Cs-134       3.35E+OO    2.92E+OO    8.67E+OO U TV         ONSl-V    379410004 8/13/2015    Cs-137
* 5.57E+OO    4.64E+OO-   7.65E+OO U
 *TV         ONSl-V    379410004 8/13/2015     Fe-59       7.28E+OO    4.99E+OO    l.62E+Ol U TV         ONSl-V    379410004 8/13/2015     I-131       -9.93E-Ol   3.19E+OO    l.03E+Ol U TV         ONSl-V    379410004 8/13/2015     K-40        2.46E+03    l.44E+02    7.08E+Ol TV        ONSl-V     379410004 8/13/2015    La-140        3.53E-01   3.33E+OO    l.08E+Ol u TV         ONSl-V    379410004 8/13/2015    Mn-54         5.61E-01   2.47E+OO    8.08E+OO u TV         ONSl-V    379410004 8/13/2015    Nb-95        l.77E+OO    2.31E+OO    7.60E+OO u TV        ONSl-V     379410004 8/13/2015    Ru-103      -l.80E+OO    2.16E+OO    7.00E+OO u TV        ONSl-V     379410004 8/13/2015    Ru-106       5.62E+OO    1.99E+Ol    6.64E+Ol u TV         ONSl-V    379410004 8/13/2015    Sb-124      -4.93E+OO    5.19E+OO    1.62E+Ol u TV         ONSl-V    379410004 8/13/2015    Sb-125      -l.38E+OO    6.02E+OO    l.93E+Ol u TV        ONSl-V     379410004 8/13/2015     Se-75       5.42E+OO    3.19E+OO    1.00E+Ol u TV        ONSl-V     379410004 8/13/2015    Th-228      -l.03E+Ol    6.58E+OO    1.40E+Ol u TV        ONSl-V     379410004 8/13/2015    Zn-65       -2.24E+OO    6.0lE+OO    1.69E+Ol u TV         ONSl-V    379410004 8/13/2015     Zr-95       5.04E+OO    4.32E+OO    1.41E+Ol u TV        ONSl-V     379410005 8/13/2015    Ac-228       2.77E+Ol    1.87E+Ol    3.55E+Ol u TV        ONSl-V     379410005 8/13/2015   Ag-108m       1.55E+OO    2.38E+OO    7.67E+OO u TV        ONSl-V     379410005 8/13/2015   Ag-llOm      -7.56E-Ol    3.59E+OO    l.19E+Ol u TV        ONSl-V     379410005 8/13/2015    Ba-140      -8.43E+OO    1.08E+Ol    3.45E+Ol u TV        ONSl-V     379410005 8/13/2015     Be-7        l.42E+03    8.18E+Ol    6.80E+Ol TV        ONSl-V     379410005 8/13/2015    Ce-141      -8.70E+OO    5.71E+OO    l.22E+Ol u TV        ONSl-V     379410005 8/13/2015    Ce-144       l.90E+Ol    1.50E+Ol    4.75E+Ol u TV        ONSl-V     379410005 8/13/2015    Co-57       -l.15E+OO    l.94E+OO    6.18E+OO U TV        ONSl-V     379410005 8/13/2015    Co-58        8.12E+OO    5.06E+OO    8.65E+OO U TV        ONSl-V     379410005 8/13/2015    Co-60        5.32E-Ol    3.12E+OO    1.05E+Ol U TV        ONSl-V     379410005 8/13/2015     Cr-51      -3.78E+Ol    2.49E+Ol    7.33E+Ol U TV        ONSl-V     379410005 8/13/2015    Cs-134      -1.27E+OO    3.27E+OO    9.68E+OO U TV        ONSl-V     379410005 8/13/2015    Cs-137        l.49E-01   2.61E+OO    8.57E+OO U TV        ONSl-V     379410005 8/13/2015    Fe-59       -5.87E+OO    6.22E+OO    1.90E+Ol U TV        ONSl-V     379410005 8/13/2015     I-131      -9.39E+OO    5.75E+OO    l.19E+Ol U TV        ONSl-V     379410005 8/13/2015     K-40        l.16E+03    1.03E+02    9.34E+Ol TV        ONSl-V     379410005 8/13/2015    La-140      -2.82E+OO    4.06E+OO    1.26E+Ol u TV        ONSl-V     379410005 8/13/2015    Mn-54       -9.82E-Ol    2.82E+OO    9.33E+OO u TV        ONSl-V     379410005 8/13/2015    Nb-95        5.51E-Ol    2.84E+OO    9.22E+OO u TV        ONSl-V     379410005 8/13/2015    Ru-103       1.70E+OO    2.59E+OO    8.71E+OO u TV        ONSl-V     379410005 8/13/2015    Ru-106      -3.22E+Ol    2.64E+Ol    7.97E+Ol u TV        ONSl-V     379410005 8/13/2015    Sb-124      -l.64E+OO    6.68E+OO    2.15E+Ol u TV        ONSl-V     379410005 8/13/2015    Sb-125      -4.37E+OO    7.26E+OO    2.26E+Ol u TV        ONSl-V     379410005 8/13/2015     Se-75       4.26E+OO    3.43E+OO    l.12E+Ol u TV        ONSl-V     379410005 8/13/2015    Th-228      -6.36E+OO    8.24E+OO    l.71E+Ol u TV        ONSl-V     379410005 8/13/2015    Zn-65        l.14E+OO    6.43E+OO    2.12E+Ol u TV        ONSl-V     379410005 8/13/2015     Zr-95       -3.71E~Ol   4.61E+OO    1.49E+Ol u TV        ONSl-V     379410006 8/13/2015    Ac-228       4.93E+Ol    2.36E+Ol    3.59E+Ol UI TV        ONSl-V     379410006 8/13/2015   Ag-108m       7.03E-02    2.05E+OO    6.78E+OO u D-65

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.        MDC      FLAGS TYPE     STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV        ONSl-V    379410006 8/13/2015   Ag-llOm      -2.25E+OO    3.lOE+OO    9.99E+OO  u TV        ONSl-V    379410006 8/13/2015    Ba-140      -8.40E+OO    1.55E+Ol    3.23E+Ol  u TV        ONSl-V    379410006 8/13/2015     Be-7        5.62E+02    4.93E+Ol    6.19E+Ol TV        ONSl-V    379410006 8/13/2015    Ce-141       1.40E+OO    6.29E+OO    l.09E+Ol  u TV        ONSl-V    379410006 8/13/2015    Ce-144      -5.22E+OO    l.32E+Ol    4.26E+Ol  u TV        ONSl-V    379410006 8/13/2015    Co-57       -4.89E-01    1.73E+OO    5.60E+OO  u TV        ONSl-V    379410006 8/13/2015    Co-58       -8.44E+OO    3.37E+OO    7.13E+OO  u TV        ONSl-V    379410006 8/13/2015    Co-60        5.35E+OO    4.04E+OO    7.56E+OO  u TV        ONSl-V    379410006 8/13/2015     Cr-51       1.69E+Ol    1.94E+Ol    6.48E+Ol  u TV        ONSl-V    379410006 8/13/2015    Cs-134       6.30E-01    2.89E+OO    8.54E+OO  u TV        ONSl-V    379410006 8/13/2015    Cs-137       2.89E+OO    2.55E+OO    8.51E+OO  u TV        ONSlN     379410006 8/13/2015     Fe-59      -3.61E+OO    4.82E+OO    1.52E+Ol  u TV        ONSl-V    379410006 8/13/2015     I-131      4.70E+OO     3.29E+OO    l.07E+Ol  u TV        ONSl-V    379410006 8/13/2015     K-40       4.06E+03     2.19E+02    6.55E+Ol TV        ONSl-V    379410006 8/13/2015    La-140       3.19E+OO    3.04E+OO    l.02E+Ol  u TV        ONSl-V    379410006 8/13/2015    Mn-54        l.26E+OO    2.27E+OO    7.66E+OO  u TV        ONSl-V    379410006 8/13/2015    Nb-95        3.31E+OO    2.51E+OO    8.13E+OO  u TV        ONSl-V    379410006 8/13/2015    Ru-103       2.96E-01    2.24E+OO    7.37E+OO  u TV        ONSl-V    379410006 8/13/2015    Ru-106      -1.71E+OI    2.04E+OI    6.30E+OI  u TV        ONSl-V    379410006 8/13/2015    Sb-124      -3.96E-01    4.00E+OO    l.33E+OI  u TV        ONSl-V    379410006 8/13/2015    Sb-125      -4.39E+OO    6.03E+OO    l.93E+OI  u
 . TV        ONSl-V    379410006 8/13/2015     Se-75       9.64E-01    2.82E+OO    9.57E+OO  u TV        ONSl-V    379410006 8/13/2015    Th-228       2.83E+OO    7.59E+OO    1.46E+Ol  u TV        ONSl-V    379410006 8/13/2015    Zn-65        8.21E+OO    6.00E+OO    l.72E+Ol  u TV        ONSl-V    379410006 8/13/2015     Zr-95      -8.67E+OO    5.07E+OO    1.27E+Ol  u TV        OFSl-V    379410007 8/13/2015    Ac-228       1.42E+Ol    1.79E+OI    3.61E+Ol. u TV        OFSl-V    379410007 8/13/2015   Ag-108m      -4.74E+OO    2.36E+OO    6.45E+OO  u TV        OFSl-V    379410007 8/13/2015   Ag-llOm      -3.35E+OO    3.53E+OO    l.llE+Ol  u TV        OFSl-V    379410007 8/13/2015    Ba-140       1.07E+OI    1.03E+OI    3.33E+Ol  u TV        OFSl-V    379410007 8/13/2015     Be-7        1.82E+03    9.12E+Ol    6.33E+Ol TV        OFSl-V    379410007 8/13/2015    Ce-141      -1.19E+Ol    5.71E+OO    1.08E+OI  u TV        OFSl-V    379410007 8/13/2015    Ce-144      -3.85E+OO    l.34E+OI    4.28E+OI  u TV        OFSl-V    379410007 8/13/2015    Co-57        l.25E+OO    1.75E+OO    5.64E+OO  u TV        OFSl-V    379410007 8/13/2015     Co-58      -1.94E+OO    2.28E+OO    7.0lE+OO  u TV        OFSl-V    379410007 8/13/2015     Co-60      -6.59E+OO    4.24E+OO    8.31E+OO  u TV        OFSl-V    379410007 8/13/2015     Cr-51      -5.69E+OO    1.97E+OI    6.52E+Ol  U TV        OFSl-V    379410007 8/13/2015    Cs-134       l.37E+OO    2.68E+OO    8.81E+OO  U TV        OFSl-V    379410007 8/13/2015    Cs-137       4.09E+OO    3.02E+OO    7.87E+OO  U TV        OFSl-V    379410007 8/13/2015     Fe-59      -8.88E+OO    7.0lE+OO     l.61E+OI U TV        OFSl-V    379410007 8/13/2015     I-131      -1.03E+OO    3.12E+OO    l.02E+OI  U TV        OFSl-V    379410007 8/13/2015     K-40        3.68E+03    2.03E+02    7.20E+OI TV        OFSl-V    379410007 8/13/2015    La-140      -3.59E+OO    3.37E+OO    1.02E+OI  u TV        OFSl-V    379410007 8/13/2015    Mn-54        7.87E-OI    2.47E+OO    8.26E+OO  u TV        OFSl-V    379410007 8/13/2015    Nb-95        2.25E+OO    2.40E+OO    8.06E+OO  u TV        OFSl-V    379410007 8/13/2015    Ru-103       9.30E-02    2.32E+OO    7.55E+OO  u TV        OFSl-V    379410007 8/13/2015    Ru-106       5.98E+OI    2.82E+OI    6.88E+OI  u TV        OFSl-V    379410007 8/13/2015    Sb-124       2.95E+OO    5.25E+OO    l.78E+Ol  u TV        OFSl-V    379410007 8/13/2015    Sb-125      -3.47E+OO    6.37E+OO    2.04E+Ol  u TV        OFSl-V    379410007 8/,13/2015    Se-75      -2.02E+OO    2.79E+OO    9.1 lE+OO u TV        OFSl-V    379410007 8/13/2015    Th-228       9.20E+OO    7.48E+OO     l.35E+OI u D-66

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN        DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV         OFSl-V    379410007   8/13/2015     Zn-65      -7.06E+OO    5.91E+OO    1.76E+Ol  u TV         OFSl-V    379410007   8/13/2015     Zr-95       -6.67E-Ol   4.IOE+OO    l.37E+Ol  u TV         ONS3-V    381112001   9/11/2015    Ac-228       2.06E+Ol    l.33E+Ol    3.17E+Ol  u TV         ONS3-V    381112001   911112015   Ag-108m        8.91E-Ol   l.71E+OO    5.77E+OO  u TV         ONS3-V    381112001   9/11/2015   Ag-llOm      -1.05E+OO    2.66E+OO    8.64E+OO  u TV         ONS3-V    381112001   911112015    Ba-140       l.05E+OO    8.llE+OO    2.68E+Ol  u TV         ONS3-V    381112001   9/11/2015     Be-7        2.35E+03    l.11E+02    5.00E+Ol TV         ONS3-V    381112001   9/11/2015    Ce-141       3.54E+OO    3.IOE+OO    9.18E+OO  u TV         ONS3-V    381112001   911112015    Ce-144       6.81E+OO    l.12E+Ol    3.55E+Ol  u TV         ONS3-V    381112001   911112015    Co-57        l.21E+OO    l.44E+OO    4.57E+OO  u TV         ONS3-V    381112001   911112015    Co-58        3.40E+OO    2.IOE+OO    4.40E+OO  u TV         ONS3-V    381112001   9/11/2015    Co-60         l.08E-Ol   2.25E+OO    7.52E+OO  u TV         ONS3-V    381112001   9/11/2015     Cr-51      -3.50E+Ol    l.89E+Ol    5.22E+Ol  u TV         ONS3-V    381112001   9/11/2015    Cs-134      -l.27E+OO    2.13E+OO    6.llE+OO  u TV         ONS3-V    381112001   9/1112015    Cs-137       6.46E+OO    2.65E+OO    7.42E+OO  u TV         ONS3-V    381112001   911112015     Fe-59      -l.35E+Ol    6.56E+OO    l.18E+Ol  u TV         ONS3-V    381112001   9/11/2015     1-131       2.18E+OO    3.02E+OO    8.55E+OO  u TV         ONS3-V    381112001   9/11/2015     K-40        l.43E+03    9.56E+Ol    6.41E+Ol TV         ONS3-V    381112001   911112015    La-140      -1.07E+OO    2.54E+OO    8.05E+OO  u TV         ONS3-V    381112001   911112015    Mn-54       -2.23E+OO    1.94E+OO    5.94E+OO  u TV         ONS3-V    381112001   9/1112015    Nb-95        2.28E+OO    l.90E+OO    6.37E+OO  u TV         ONS3-V    381Jl2001   9/11/2015    Ru-103      -l.83E+OO    l.86E+OO    5.83E+OO  u TV         ONS3-V    381J 1,2001 9/11/2015    Ru-106      -2.23E+Ol    l.82E+Ol    5.43E+Ol  u TV         ONS3-V    381J 12001  9/11/2015    Sb-124      -4.69&#xa3;+00    4.58E+OO    l.35E+Ol  u TV         ONS3-V    381J 12001  911112015    Sb-125       1.13E+Ol    5.79E+OO    l.82E+Ol  u TV         ONS3-V    381112001   9/11/2015     Se-75      -5.15E-01    2.64E+OO    8.60E+OO  u TV         ONS3-V    381J 12001  9/11/2015    Th-228      -2.52E-03    4.89E+OO    l.27E+Ol  u TV         ONS3-V    381J 12001  9/1112015    Zn-65       -6.69E+OO    5.29E+OO    1.56E+Ol  u TV         ONS3-V    381112001   911112015     Zr-95       l.95E+OO    3.27E+OO    1.1 IE+Ol u TV         ONS3-V    381112002   9/11/2015    Ac-228       5.07E+Ol    l.70E+Ol    4.06E+Ol  UI TV         ONS3-V    381J 12002  9/11/2015   Ag-108m       2.16E+OO    2.32E+OO    7.79E+OO  u TV         ONS3-V  . 381112002   9/1112015   Ag-llOm       3.89E+OO    3.70E+OO    l.24E+Ol  u TV         ONS3-V    381112002   911112015    Ba-140      -7.35E+OO    l.02E+Ol    3.22E+Ol  u TV         ONS3-V    381112002   9/11/2015     Be-7        2.21E+03    l.12E+02    6.95E+Ol TV         ONS3-V    381J 12002  911112015    Ce-141       7.16E+OO    4.64E+OO    l.34E+Ol  u TV         ONS3-V    381J 12002  9/11/2015    Ce-144       l.37E+OO    l.51E+Ol    5.13E+Ol  u TV         ONS3-V    381112002   911112015    Co-57        9.77E-Ol    l.96E+OO    6.68E+OO  u TV         ONS3-V    381J 12002  9/1112015    Co-58        2.97E+OO    2.47E+OO    7.41E+OO  u TV         ONS3-V    381J 12002  9/11/2015    Co-60       -3.65E+OO    3.75E+OO    1.05E+Ol  U TV         ONS3-V    381112002   911112015     Cr-51       2.04E+Ol    2.64E+Ol    7.53E+Ol. U TV         ONS3-V    381112002   9/1112015    Cs-134       2.42E+OO    3.51E+OO    9.35E+OO  U TV         ONS3-V    381112002   9/11/2015    Cs-137      -6.94E-Ol    2.69E+OO    8.64E+OO  U TV         ONS3-V    381112002   9/11/2015     Fe-59      -1.08E+OO    5.64E+OO    l.83E+Ol  U TV         ONS3-V    381J 12002  9/11/2015     1-131      -4.53E+OO    3.85E+OO    l.14E+Ol  U TV         ONS3-V    381J 12002  9/11/2015     K-40        l.96E+03    l.21E+02    7.63E+Ol TV         ONS3-V    381112002   9/1112015    La-140       4.12E+OO    3.94E+OO    l.19E+Ol  u TV         ONS3-V    381J 12002  911112015    Mn-54        3.58E+OO    2.51E+OO    8.36E+OO  u TV         ONS3-V    381J 12002  911112015    Nb-95        l.46E+OO    2.68E+OO    8.73E+OO  u TV         ONS3-V    381112002   911112015    Ru-103      -2.51E-Ol    2.54E+OO    8.40E+OO  u TV         ONS3-V    381112002   9/11/2015    Ru-106      -6.29E+OO    2.25E+Ol    7.27E+Ol  u TV         ONS3-V    381J 12002  911112015    Sb-124       7.42E-01    5.69E+OO    l.89E+Ol  u TV         ONS3-V    381J 12002  911112015    Sb-125       2.60E+OO    6.71E+OO    2.26E+Ol  u TV         ONS3-V    381112002   9/1112015     Se-75      -3.59E+OO    3.58E+OO    1.1 lE+Ol u TV         ONS3-V    381112002   9/11/2015    Th-228       6.81E+OO    7.74E+OO    1.51E+Ol  u TV         ONS3-V    381112002   9/11/2015    Zn-65       -6.37E+OO    7.25E+OO    1.87E+Ol  u TV         ONS3-V    381112002   9/1112015     Zr-95      -5.94E+OO    4.73E+OO    l.37E+Ol  u D-67

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.        MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)     (pCi/kg)
TV         ONS3-V    381112003 9/1112015    Ac-228       1.45E+Ol    1.16E+Ol     3.04E+Ol u TV         ONS3-V    381112003 9/1112015   Ag-108m      -1.45E+OO    1.79E+OO     5.70E+OO u TV         ONS3-V    381112003 9/1112015   Ag-llOm      -2.75E+OO    2.69E+OO     8.26E+OO u TV         ONS3-V    381112003 9/1112015    Ba-140      -1.14E+Ol    8.78E+OO     2.61E+Ol u TV         ONS3-V    381112003 9/11/2015     Be-7        3.62&#xa3;+03    1.64&#xa3;+02     5.23E+Ol TV         ONS3-V    381112003 9/1112015    Ce-141      -5.19E+OO    4.13E+OO     9.04E+OO u TV         ONS3-V    381112003 9/1112015    Ce-144       l.25E+OO    1.09E+Ol     3.67E+Ol u TV         ONS3-V    381112003 9/1112015    Co-57        1.54E+OO    1.64E+OO     4.96E+OO u TV         ONS3-V    381112003 9/1112015    Co-58       -3.50&#xa3;-02    1.93E+OO     5.60E+OO u TV         ONS3-V    381112003 9/1112015    Co-60        2.95&#xa3;-01    2.24E+OO     7.55E+OO u TV         ONS3-V    381112003 9/11/2015     Cr-51       l.12E+Ol    1.78E+Ol     6.08E+Ol u TV         ONS3-V    381112003 9/1112015    Cs-134       6.98E+OO    3.lOE+OO     7.62E+OO u TV         ONS3-V    381112003 9/1112015    Cs-137       2.86E+Ol    4.53E+OO     6.52E+OO M TV         ONS3-V    381112003 9/1112015     Fe-59       6.0lE+OO    4.90E+OO     l.60E+Ol u TV         ONS3-V    381112003 911112015     I-131       2.71E+OO    2.72E+OO     9.15E+OO u TV         ONS3-V    381112003 9/1112015     K-40        3.20&#xa3;+03    1.68&#xa3;+02     5.75E+Ol TV         ONS3-V    381112003 9/1112015    La-140      -6.99&#xa3;-01    2.96E+OO   . 9.58E+OO u TV         ONS3-V    381112003 9/1112015    Mn-54       -1.29E+OO    2.0lE+OO     6.45E+OO u TV         ONS3-V    381112003 9/11/2015    Nb-95        4.64E+OO    2.73E+Ob     5.90E+OO u TV         ONS3-V    381112003 9/11/2015    Ru-103      -2.18E+OO    2.05E+OO     5.43E+OO u TV         ONS3-V    381112003 9111/2015    Ru-106      -2.50E+Ol    1.78E+Ol     5.12E+Ol u TV         ONS3-V    381112003 9/11/2015    Sb-124      -6.98E+OO    4.58E+OO     1.22E+Ol u TV         ONS3-V    381112003 9/11/2015    Sb-125       5.89&#xa3;-01    5.21E+OO     l.74E+Ol u TV         ONS3-V    381112003 9111/2015     Se-75       6.38&#xa3;-01    2.74E+OO     8.83E+OO u TV         ONS3-V    381112003 9/1112015    Th-228       2.15E+OO    6.35E+OO     l.33E+Ol u TV         ONS3-V    381112003 9/11/2015    Zn-65        2.86E+OO    5.21E+OO     l.72E+Ol u TV         ONS3-V    381112003 9/11/2015     Zr-95       l.84E+OO    3.51E+OO     l.19E+Ol u TV         ONSl-V    381112004 9/11/2015    Ac-228      -3.34E+Ol    1.53E+Ol     3.26E+Ol u TV         ONSl-V    381112004 911112015   Ag-108m      -1.98E+OO    2.18E+OO     6.74E+OO u TV         ONSl-V    381112004 9!11!2oi'5  Ag-llOm       3.45E+OO    3.76E+OO     l.09E+Ol u TV         ONSl-V    381112004 9/1112015    Ba-140       2.llE+Ol    l.12E+Ol     3.44E+Ol u TV         ONSl-V    381112004 9/11/2015     Be-7        1.94&#xa3;+03    9.67E+Ol     6.37E+Ol TV         ONSl-V    381112004 9/1112015    Ce"141      -6.26E+OO    5.44E+OO     l.17E+Ol u TV         ONSl-V    381112004 911112015    Ce-144      -3.03&#xa3;+00    1.40E+Ol     4.50E+Ol u TV         ONSl-V    381112004 9/1112015    Co-57        3.23E+OO    1.86E+OO     5.70E+OO u TV         ONSl-V    381112004 9/1112015    Co-58        2.61&#xa3;-01    2.41E+OO     7.24E+OO u TV         ONSl-V    381112004 9/11/2015    Co-60        l.15E+OO    2.46E+OO     8.28E+OO u TV         ONSl-V    381112004 9/1112015     Cr-51       l.36E+Ol    2.05E+Ol     6.81E+Ol u TV         ONSl-V    381112004 9/1112015    Cs-134      -3.96E+OO    3.06E+OO     7.64E+OO u TV         ONSl-V    381112004 9/1112015    Cs-137      -3.92E+OO    4.31E+OO     1.03E+Ol u TV         ONSl-V    381112004 9111/2015     Fe-59       6.98E+OO    4.70E+OO     1.57E+Ol u TV         ONSl-V    381112004 9/1112015     I-131      -4.41&#xa3;-01    3.23E+OO     l.06E+Ol u TV         ONSl-V    381112004 9/1112015     K-40        1.54&#xa3;+03    1.07&#xa3;+02     6.65E+Ol TV         ONSl-V    381112004 9/11/2015    La-140       7.63&#xa3;-01    2.74E+OO     9.lOE+OO u TV         ONSl-V    381112004 9/11/2015    Mn-54       -1.79&#xa3;-01    2.23E+OO     7.30E+OO u TV         ONSl-V    381112004 9111/2015    Nb-95       -l.38E+OO    2.93E+OO     7.40E+OO u TV         ONSl-V    381112004 9/1112015    Ru-103      -1.84&#xa3;-01    2.32E+OO     7.43E+OO u TV         ONSl-V    381112004 9111/2015    Ru-106       l.30E+Ol    2.22E+Ol     7.49E+Ol u TV         ONSl-V    381112004 9/11/2015    Sb-124       2.41&#xa3;-01    5.38&#xa3;+00     1.75E+Ol u TV         ONSl-V    381112004 9/1112015    Sb-125       l.91E+OO    6.40E+OO     2.09E+Ol u TV         ONSl-V    381112004 9111/2015     Se-75      -3.76&#xa3;+00    3.13E+OO     9.78E+OO u TV         ONSl-V    381112004 9/1112015    Th-228       8.02E+OO    6.60E+OO     1.59E+Ol u TV         ONSl-V    381112004 911112015    Zn-65        l.70E+OO    5.29E+OO     l.79E+Ol u TV         ONSl-V    381112004 9/1112015     Zr-95       3.83E+OO    4.llE+OO     l.37E+Ol u TV         ONSl-V    381112005 9/1112015    Ac-228      -9.37E+OO    1.50E+Ol     4.0lE+Ol u TV         ONSl-V    381112005 9/11/2015   Ag-108m      -3:10E+OO    2.58E+OO     7.81E+OO u TV         ONSl-V    381112005 9/11/2015   Ag-llOm      -2.58E+OO    3.64E+OO     l.17E+Ol u D-68

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE       NUCLIDE         (pCVkg)   (pCi/kg)    (pCi/kg)
TV         ONSl-V    381112005 9/1112015     Ba-140      l.14E+OO    l.20E+Ol    3.90E+Ol  u TV         ONSl-V    381112005 9/1112015      Be-7       3.73E+03    I.76E+02    7.73E+Ol TV         ONSl-V    381112005 9/1112015     Ce-141     -2.92E+OO    5.76E+OO    l.49E+Ol  u TV         ONSl-V    381112005 9/1112015     Ce-144     -l.18E+Ol    I.76E+Ol    5.76E+Ol  u TV         ONSl-V    381112005 9/1112015     Co-57      -2.28E+OO    2.28E+OO    7.29E+OO  u TV         ONSl-V    381112005 9/1112015     Co-58      -l.36E+OO    2.47E+OO    7.66E+OO  u TV         ONSl-V    381112005 9/1112015     Co-60      -l.96E+OO    2.88E+OO    9.08E+OO  u TV         ONSl-V    381112005 9/1112015      Cr-51     -l.12E+Ol    2.6IE+Ol    8.49E+Ol  u TV         ONSl-V    381112005 9/1112015     Cs-134      l.31E+OO    2.91E+OO    9.50E+OO  u TV         ONSl-V    381112005 9/11/2015     Cs-137     -l.64E+OO    2.78E+OO    8.72E+OO  u TV         ONSl-V    381112005 9/11/2015      Fe-59     -4.57E+OO    5.07E+OO    l.58E+Ol  u TV         ONSl-V    381112005 9/11/2015      1-131     -l.03E+OO    4.00E+OO    l.31E+Ol  u TV         ONSl-V    381112005 9/11/2015      K-40       l.04E+03    9.69E+Ol    8.24E+Ol TV         ONSl-V    381112005 9/1112015     La-140     -5.95E+OO    3.96E+OO    l.09E+Ol  u TV         ONSl-V    381112005 9/1112015     Mn-54      -4.50E-01    2.48E+OO    8.29E+OO  u TV         ONSl-V    381112005 9/1112015     Nb-95       2.12E+OO    2.69E+OO    8.79E+OO  u TV         ONSl-V    381112005 9/1112015     Ru-103      4.00E+OO    5.35E+OO    7.91E+OO  u TV         ONSl-V    381112005 9/11/2015     Ru-106      2.72E+Ol    2.51E+Ol    8.17E+Ol  u TV         ONSl-V    381112005 9/11/2015     Sb-124      l.27E+OO    5.34E+OO    l.78E+Ol  u TV         ONSl-V    381112005 9/11/2015     Sb-125      6.42E+OO    7.46E+OO    2.45E+Ol  u TV         ONSl-V    381112005 9/11/2015 . Se-75      5.56E-Ol    3.87E+OO    l.29E+Ol  u TV         ONSl-V    381112005 9/11/2015     Th-228      4.92E+OO    8.07E+OO    l.80E+Ol  u TV         ONSl-V    381112005 9/11/2015     Zn-65       9.41E-Ol    5.74E+OO    l.93E+Ol  u TV         ONSl-V    381112005 9/11/2015      Zr-95      5.59E-Ol    4.83E+OO    l.56E+Ol  u TV         ONSl-V    381112006 9/11/2015     Ac-228     -7.82E+OO    l.02E+Ol    2.25E+Ol  u TV         ONSl-V    381112006 9/11/2015    Ag-108m       l.SOE-01   l.36E+Oci   4.46E+OO  u TV         ONSl-V    381112006 9/11/2015    Ag-llOm
* 2.lOE-01    2.18E+OO    7.19E+OO  u TV         ONSl-V    381112006 9/11/2015     Ba-140      8.18E+OO    8.51E+OO    2.19E+Ol  u TV         ONSl-V    381112006 9/11/2015      Be-7       l.32E+03    6.94E+Ol    4.17E+Ol TV         ONSl-V    381112006 9/11/2015     Ce-141     -4.36E+OO    3.15E+OO    7.67E+OO  u TV         ONSl-V    381112006 9/11/2015     Ce-144      2.33E+OO    9.24E+OO    3.00E+Ol  u TV         ONSl-V    381112006 9/11/2015     Co-57       4.13E+OO    l.55E+OO    4.04E+OO  UI TV         ONSl-V    381112006 9/11/2015     Co-58       8.4IE-Ol    l.64E+OO    5.48E+OO  u TV         ONSl-V    381112006 9/11/2015     Co-60       2.79E+OO    l.82E+OO    6.13E+OO  u TV         ONSl-V    381112006 9/11/2015      Cr-51      7.18E+OO    l.34E+Ol    4.47E+Ol  U TV         ONSl-V    381112006 9/11/2015     Cs-134      5.39E-Ol    l.93E+OO    5.62E+OO  U TV         ONSl-V    381112006 9/11/2015     Cs-137      l.63E+OO    l.68E+OO    5.68E+OO  U TV         ONSl-V    381112006 9/11/2015      Fe-59     -7.27E+OO    4.07E+OO    l.08E+Ol  U TV         ONSl-V    381112006 9/11/2015      I-131     -l.35E-01    2.38E+OO    6.88E+OO  U TV         ONSl-V    381112006 9/11/2015      K-40       2.69E+03    l.45E+02    5.37E+Ol TV         ONSl-V    381112006 9/11/2015     La-140      l.88E+OO    2.04E+OO    6.96E+OO  u TV         ONSl-V    381112006 9/11/2015     Mn-54      -l.90E+OO    l.60E+OO    4.81E+OO  u TV         ONSl-V    381112006 9/11/2015     Nb-95       2.86E+OO    l.72E+OO    5.58E+OO  u TV         ONSl-V    381112006 9/11/2015     Ru-103      9.67E-Ol    l.52E+OO    4.98E+OO  u TV         ONSl-V    381112006 9/11/2015     Ru-106      2.93E+Ol    l.36E+Ol    4.76E+Ol  u TV         ONSl-V    381112006 9/11/2015     Sb-124     -l.20E+OO    3.12E+OO    9.87E+OO  u TV         ONSl-V    381I12006 9/11/2015     Sb-125      2.62E+OO    4.llE+OO     l.35E+Ol u TV         ONSl-V    381112006 9/11/2015      Se-75      4.16E+OO    2.22E+OO    6.79E+OO  u TV         ONSl-V    381112006 9/11/2015     Th-228      l.12E+OO    4.38E+OO    l.OIE+Ol  u TV         ONSl-V    381112006 9/11/2015     Zn-65      -7.IOE+OO    4.29E+OO    l.17E+Ol  u TV         ONSl-V    381112006 9/11/2015      Zr-95       l.98E-Ol   2.75E+OO    9.17E+OO  u TV         OFS2-V    381112007 9/11/2015     Ac-228      2.02E+o1
* 2.57E+Ol    4.45E+Ol  u TV         OFS2-V    381112007 9/11/2015    Ag-108m     -l.28E+OO    2.49E+OO    8.17E+OO  u TV         OFS2-V    381112007 9/11/2015    Ag-llOm      l.56E+OO    4.03E+OO     l.31E+Ol u TV         OFS2-V    381112007 9/11/2015     Ba-140      9.58E+OO    l.21E+Ol    4.03E+Ol  u TV         OFS2-V    381112007 9/11/2015      Be-7       l.76E+03    l.OOE+02    7.28E+Ol D-69

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN       DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
TV         OFS2-V    381112007  9/11/2015    Ce-141       4.14E+OO    4.17E+OO    l.37E+Ol u TV         OFS2-V    381112007  9/11/2015    Ce-144      -l.32E+Ol    l.6IE+Ol    5.17E+Ol u TV         OFS2-V    381112007  9/11/2015    Co-57       -3.84E-Ol    2.05E+OO    6.79E+OO u TV         OFS2-V    381112007  9/11/2015    Co-58       -6. IOE-01   2.61E+OO    8.36E+OO u TV         OFS2-V    38il 12007 9/11/2015. Co-60        1.44E+OO    2.98E+OO    9.96E+OO u TV         OFS2-V    381112007  9/11/2015     Cr-51      -3.51E+Ol    2.6IE+Ol    7:68E+Ol u TV         OFS2-V    381112007  9/11/2015    Cs-134       2.81E+OO    3.19E+OO    l.02E+Ol u TV         OFS2-V    381112007  9/11/2015    Cs-137       3.39E-Ol    3.0IE+OO    9.89E+OO u TV         OFS2-V    381112007  9/11/2015     Fe-59      -I.24E+Ol    6.52E+OO    l.74E+Ol u TV         OFS2-V    381112007  9/11/2015     I-131       3.36E+OO    3.82E+OO    l.29E+Ol u TV         OFS2-V    381112007  9/11/2015     K-40        2.63E+03    1.58E+02    7.27E+Ol TV         OFS2-V    381112007  9/11/2015    La-140       9.28E-03    3.65E+OO    l.19E+Ol u TV        OFS2-V     381112007  9/11/2015    Mn-54        5.14E-Ol    2.96E+OO    9.6IE+OO u TV        OFS2-V     381112007  9/11/2015    Nb-95        4.41E-Ol    2.99E+OO    9.75E+OO u TV        OFS2-V     381112007  9/11/2015    Ru-103       l.53E+OO    2.96E+OO    8.65E+OO u TV        OFS2-V     381112007  9/11/2015    Ru-106      -2.36E+Ol    2.48E+Ol    7.69E+Ol u TV        OFS2-V     381112007  9/11/2015    Sb-124       3.37E+OO    5.97E+OO    l.99E+Ol u TV        OFS2-V     381112007  9/11/2015    Sb-125      -9.llE+OO    8.0IE+OO    2.51E+Ol u TV        OFS2-V     381112007  9/11/2015     Se-75      -2.78E+OO    3.76E+OO    l.18E+Ol u TV        OFS2-V     381112007  9/11/2015    Th-228      -8.78E+OO    8.52E+OO    l.79E+Ol u TV        OFS2-V     381112007  9/11/2015    Zn-65       -2.SIE+OO    6.13E+OO    l.99E+Ol u TV        OFS2-V     381112007  9/11/2015     Zr-95      -8.97E-01    4.96E+OO    l.60E+Ol u D-70

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN     DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD         STJ       364598023 11712015    Ac-228      -9.42E+OO    3.79E+OO    7.64E+OO u WD         STJ       364598023 11712015   Ag-108m       l.62E-Ol    4.64E-Ol    l.53E+OO u WD         STJ       364598023 11712015   Ag-llOm      -2.21E+OO    7.41E-Ol    l.59E+OO u WD         STJ       364598023 11712015    Ba-140       9.30E-Ol    8.20E-Ol    2.73E+OO u WD         STJ       364598023 11712015     Be-7       -l.36E+OO    4.30E+OO    l.38E+Ol u WD         STJ       364598023 11712015    BETA         8.99E-Ol    5.52E-Ol    l.75E+OO u WD         STJ       364598023 11712015    Ce-141       6.59E-Ol    9.98E-Ol    2.90E+OO u WD         STJ       364598023 11712015    Ce-144        l.77E-Ol   3.47E+OO    l.14E+Ol u WD         STJ       364598023 11712015    Co-57         l.88E-Ol   4.59E-Ol    l.51E+OO u WD         STJ       364598023 11712015    Co-58        8.02E-02    5.56E-Ol    l.61E+OO u WD         STJ       364598023 11712015    Co-60        3.77E-Ol    5.06E-Ol    l.71E+OO u WD         STJ       364598023 11712015     Cr-51       4.74E+OO    4.78E+OO    l.58E+Ol u WD         STJ       364598023 11712015    Cs-134      -l.79E-Ol    5.76E-Ol    l.88E+OO u WD         STJ       364598023 11712015    Cs-137      -1.00E+OO    9.59E-Ol    2.29E+OO u WD         STJ       364598023 117/2015     Fe-59       l.83E+OO    l.09E+OO    3.44E+OO u WD         STJ       364598023 11712015     1-131      -2.74E-Ol    7.67E-Ol    2.51E+OO u WD         STJ       364598023 117/2015     K-40        1.04E+Ol    9.41E+OO    l.72E+Ol u WD         STJ       364598023 11712015    La-140       9.30E-Ol    8.20E-Ol    2.73E+OO u WD         STJ       364598023 11712015    Mn-54        7.02E-Ol    5.14E-OI    l.68E+OO u WD         STJ       364598023 11712015    Nb-95        9.31E-01    5.69E-01    l.83E+OO u WD         STJ       364598023 11712015    Ru-103       4.33E-02    7.43E-01    l.77E+OO u WD         STJ       364598023 11712015    Ru-106       l.OOE+OO    4.50E+OO    1.53E+Ol u WD         STJ       364598023 11712015    Sb-124      -3.40E-01    l.22E+OO    3.89E+OO u WD         STJ       364598023 11712015    Sb-125       8.92E-01    2.83E+OO    4.40E+OO u WD         STJ       364598023 11712015     Se-75      -2.38E-01    6.88E-01    2.30E+OO u WD         STJ       364598023 11712015    Th-228       2.53E-01    l.41E+OO    3.91E+OO u WD         STJ       364598023 11712015    Zn-65       -l.74E+OO    l.13E+OO    3.15E+OO u WD         STJ       364598023 11712015     Zr-95       l.30E+OO    9.16E-01    3.0lE+OO u WD         STJ       364598024 11712015     1-131       l.44E-01     l.02E-01   3.25E-Ol u WD         LTW       364598025 11712015    Ac-228       7.76E+OO    4.53E+OO    8.87E+OO u WD         LTW       364598025 11712015   Ag-108m      -1.14E+OO    l.08E+OO    l.82E+OO u WD         LTW       364598025 11712015   Ag-llOm      -8.77E-Ol    7.83E-01    l.80E+OO u WD         LTW       364598025 11712015    Ba-140       1.79E+OO    l.03E+OO    3.33E+OO u WD         LTW       364598025 11712015     Be-7       -3.39E+OO    5.38E+OO    l.71E+Ol u WD         LTW       364598025 11712015    BETA         2.64E+OO    1.21E+OO . 3.32E+OO u WD         LTW       364598025 117/2015    Ce-141       8.00E-01    l.76E+OO    3.54E+OO U WD         LTW       364598025 11712015    Ce-144      -5.63E+OO    5.23E+OO    1.44E+OI U WD         LTW       364598025 11712015    Co-57       -2.48E-OI    6.00E-01    1.99E+OO U WD         LTW       364598025 11712015    Co-58        4.32E-02    5.94E-01    l.92E+OO U WD         LTW       364598025 11712015    Co-60       -2.75E-01    5.70E-Ol    l.83E+OO U WD         LTW       364598025 11712015     Cr-51      -7.66E+OO    6.16E+OO    1.90E+OI U WD         LTW       364598025 11712015    Cs-134      -4.25E-01    7.39E-01    2.31E+OO U WD         LTW       364598025 11712015    Cs-137       l.27E+OO    6.95E-01    2.16E+OO U WD         LTW       364598025 117/2015     Fe-59       8.08E-OI    l.36E+OO    3.99E+OO U WD         LTW       364598025 11712015     1-131       2.93E+OO    l.15E+OO    3.26E+OO U WD         LTW       364598025 11712015     K-40        2.75E+Ol    1.llE+Ol    2.05E+Ol WD         LTW       364598025 11712015    La-140       l.79E+OO    l.03E+OO    3.33E+OO u WD         LTW       364598025 11712015    Mn-54        7.90E-01    6.27E-OI    2.09E+OO u WD         LTW       364598025 11712015    Nb-95        3.1 lE-01   8.91E-01    2.07E+OO u WD         LTW       364598025 11712015    Ru-103      -3.47E-01    6.66E-Ol    2.13E+OO u D-71

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN        DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WD         LTW       364598025    117/2015     Ru-106     -4.12E+OO    6.66E+OO    l.80E+Ol u WD         LTW       364598025    117/2015     Sb-124      2.90E+OO    1.62E+OO    5.26E+OO u WD         LTW       364598025    117/2015     Sb-125     -7.19E-01    1.90E+OO    5.28E+OO u WD         LTW       364598025    117/2015      Se-75     -7.04E-01    8.55E-01    2.74E+OO u WD         LTW       364598025    117/2015. Th-228      2.74E+OO    1.78E+OO    4.46E+OO u WD         LTW       364598025    117/2015     Zn-65        9.02E-02   1.25E+OO    4.17E+OO u WD         LTW       364598025    117/2015      Zr-95      l.47E+OO    1.13E+OO    3.61E+OO u WD         LTW       364598026    117/2015      I-131     -1.41E-01    9.56E-02    3.24E-01 u WD         STJ       365672023   1/2112015     Ac-228      l.06E+Ol    6.50E+OO    2.29E+Ol u WD         STJ       365672023   112112015   Ag-108m       3.88E+OO    1.65E+OO    5.24E+OO u WD         STJ       365672023   1/21/2015   Ag-llOm       1.43E+OO    l.39E+OO    4.83E+OO u WD         STJ       365672023   1/21/2015     Ba-140     -3.36E+OO    6.51E+OO    2.09E+Ol U WD         STJ       365672023   1/2112015      Be-7       1.06E+Ol    1.16E+Ol    3.91E+Ol U WD         STJ       365672023   1/2112015     BETA        l.27E+OO    4.62E-01    l.34E+OO U WD         STJ       365672023   1/21/2015     Ce-141     -1.46E+OO    2.90E+OO    8.lOE+OO U WD         STJ       365672023   1/21/2015     Ce-144     -7.57E+OO    8.90E+OO    2.72E+Ol U WD         STJ       365672023   1/2112015     Co-57       1.28E+OO    l.32E+OO    4.40E+OO U WD         STJ       365672023   1/2112015     Co-58       4.24E-01    1.42E+OO    4.73E+OO U WD         STJ       365672023   112112015     Co-60      -1.40E+OO    2.30E+OO    5.26E+OO U WD         STJ       365672023   112112015      Cr-51      1.82E+Ol    l.36E+Ol    4.59E+Ol u WD         STJ       365672023   1/2112015     Cs-134      2.46E-02    1.67E+OO    5.45E+OO u WD         STJ       365672023   1121/2015     Cs-137     -1.27E+OO    1.31E+OO    3.77E+OO u WD         STJ       365672023   1121/2015      Fe-59      3.63E+OO    2.80E+OO    1.00E+Ol u WD         STJ       365672023   112112015      I-131      2.80E-01    2.27E+OO    7.49E+OO u WD         STJ       365672023   112112015      K-40       3.98E+Ol    2.45E+Ol    4.96E+Ol u WD         STJ       365672023   1/2112015     La-140     -3.46E+OO    2.24E+OO    5.17E+OO u WD         STJ       365672023   1/2112015     Mn-54      -5.64E-01    1.47E+OO    4.56E+OO u WD         STJ       365672023   1/2112015     Nb-95      -1.55E+OO    1.64E+OO    4.57E+OO u WD         STJ       365672023   1/2112015     Ru-103     -3.85E+OO    1.71E+OO    4.02E+OO u WD         STJ       365672023   112112015     Ru-106      l.36E+Ol    l.32E+Ol    4.59E+Ol u WD         STJ       365672023   1/2112015     Sb-124     -3.81E+OO    4.45E+OO    l.29E+Ol u WD         STJ       365672023 . 1/2112015     Sb-125     -4.96E+OO    3~84E+OO    l.06E+Ol u WD         STJ       365672023   1/21/2015      Se-75     -1.87E+OO    l.92E+OO    5.95E+OO u WD         STJ       365672023   1/2112015     Th-228      4.04E+OO    3.00E+OO    9.90E+OO u WD         STJ       365672023   1/2112015     Zn-65      -1.18E+OO    2.59E+OO    6.58E+OO u WD         STJ       365672023   1/21/2015      Zr-95      1.66E+OO    2.37E+OO    8.15E+OO U WD         STJ       365672024   1/2112015      1-131       1.lOE-01   2.38E-01    7.63E-01 U WD         LTW       365672025   1/2112015     Ac-228      2.23E+OO    6.89E+OO    2.30E+Ol U WD         LTW       365672025   1/21/2015    Ag-108m     -9.27E-02    1.22E+OO    3.56E+OO U WD         LTW       365672025   1/2112015    Ag-llOm       7.21E-01   l.30E+OO    4.39E+OO U WD         LTW       365672025   112112015     Ba-140      2.91E+OO    6.69E+OO    2.00E+Ol U WD         LTW       365672025   1/21/2015      Be-7       3.02E+Ol    l.30E+Ol    4.25E+Ol U WD         LTW       365672025   1/21/2015     BETA        l.35E+OO    4.77E-01    l.42E+OO U WD         LTW       365672025   112112015     Ce-141     -2.09E-01    2.07E+OO    6.57E+OO U WD         LTW       365672025   1/2112015     Ce-144      4.46E+OO    9.27E+OO    2.70E+Ol U WD         LTW       365672025   1/2112015     Co-57       -4.27E-01   1.04E+OO    3.29E+OO U WD         LTW       365672025   1/2112015     Co-58      -l.23E+OO    l.63E+OO    4.85E+OO U WD         LTW       365672025   112112015     Co-60      -1.92E+OO    1.70E+OO    4.85E+OO U WD         LTW       365672025   1/2112015      Cr-51      2.36E+Ol    l.27E+Ol    4.15E+Ol U WD         LTW       365672025   1/2112015     Cs-134     -1.20E+OO    1.91E+OO    5.80E+OO U D-72

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                      CONC     STD.DEV.         MDC      FLAGS TYPE      STATION       LSN        DATE     NUCLIDE          (pCi/L)    (pCi/L)      (pCi/L)
WD         LTW       365672025   1/21/2015   Cs-137       1.42E+OO    l.53E+OO      5.23E+OO u WD         LTW       365672025   1/2112015    Fe-59      -l.33E-Ol    2.76E+OO      9.02E+OO u WD         LTW       365672025   1/2112015    I-131      -8.50E-Ol    2.lOE+OO      6.62E+OO u WD         LTW       365672025   112112015    K-40        6.66E+OO    l.70E+Ol      5.0lE+Ol u WD         LTW       365672025   112112015   La-140      -3.99E+OO    2.48E+OO      5.94E+OO u WD         LTW       365672025   1/2112015   Mn-54       -1.15E+OO    l.46E+OO      4.53E+OO u WD         LTW       365672025   1/21/2015   Nb-95        5.06E-01    l.50E+OO      4.95E+OO u WD         LTW       365672025   1121/2015   Ru-103       5.68E-01    l.16E+OO      3.98E+OO u WD         LTW       365672025   1/21/2015   Ru-106       8.75E+OO    l.26E+Ol      4.31E+Ol u WD         LTW       365672025   1/21/2015   Sb-124      -l.88E+OO    3.57E+OO      1.08E+Ol u WD         LTW       365672025   112112015   Sb-125      -1.78E+OO    4.06E+OO      l.07E+Ol u WD         LTW       365672025   112112015    Se-75      -1.29E+OO    1.63E+OO      5.08E+OO u WD         LTW       365672025   112112015   Th-228       2.67E+OO    2.84E+OO      9.39E+OO u WD         LTW       365672025   1/2112015   Zn-65       -l.32E+OO    3.76E+OO      1.20E+Ol u WD         LTW       365672025   1/21/2015    Zr-95      -2.25E+OO    3.03E+OO      7.52E+OO u WD         LTW       365672026   1/2112015    I-131       2.02E-01    2.83E-01      8.95E-01 u WD         STJ       366679023   2/4/2015    Ac-228       l.lOE+Ol    7.42E+OO      1.64E+Ol u WD         STJ       366679023   2/4/2015   Ag-108m       2.88E+OO    l.62E+OO      4.26E+OO u WD         STJ       366679023   2/4/2015   Ag-llOm       5.55E-01    1.16E+OO      3.47E+OO u WD         STJ       366679023   2/4/2015    Ba-140       1.25E-01    5.92E+OO      l.98E+Ol u WD         STJ       366679023   2/4/2015     Be-7        l.87E+Ol    8.95E+OO      3.60E+Ol u WD         STJ       366679023   2/4/2015    BETA         l.05E+OO    4.00E-01      l.21E+OO u WD         STJ       366679023   2/4/2015    Ce-141      -2.25E+OO    2.54E+OO      7.65E+OO u WD         STJ       366679023   2/4/2015    Ce-144      -l.26E+Ol    8.80E+OO      2.67E+Ol u WD         STJ       366679023   2/4/2015    Co-57        2.99E-02    l.20E+OO      3.80E+OO u WD         STJ       366679023   2/4/2015    Co-58        l.63E+OO    9.17E-01      3.34E+OO u WD         STJ       366679023   2/4/2015    Co-60       -2.33E-02    l.20E+OO      3.93E+OO u WD         STJ       366679023   2/4/2015     Cr-51       6.35E-01    l.37E+Ol      3.92E+Ol u WD         STJ       366679023   2/4/2015    Cs-134       5.76E-Ol    l.20E+OO      4.05E+OO u WD         STJ       366679023   2/4/2015    Cs-137       2.13E+OO    2.31E+OO      3.89E+OO u WD         STJ       366679023   2/4/2015     Fe-59       8.llE-01    2.51E+OO      8.53E+OO u WD         STJ       366679023   2/4/2015     I-131       9.0SE-02    2.17E+OO   . 7.02E+OO  u WD         STJ       366679023   2/4/2015     K-40        l.45E+OO    l.72E+Ol      4.92E+Ol u WD         STJ       366679023   2/4/2015    La-140       l.56E+OO    2.03E+OO      6.49E+OO u WD         STJ       366679023   2/4/2015    Mn-54        1.53E-01    l.40E+OO      4.06E+OO U WD         STJ       366679023   2/4/2015    Nb-95       -8.28E-01    l.35E+OO      4.16E+OO U WD         STJ       366679023   2/4/2015    Ru-103      -2.07E+OO    l.46E+OO      3.87E+OO U WD         STJ       366679023   2/4/2015    Ru-106      -2.56E+OO    l.20E+Ol      3.92E+Ol U WD         STJ       366679023   2/4/2015    Sb-124      -2.34E+OO    3.47E+OO      9.88E+OO U WD         STJ       366679023   2/4/2015    Sb-125      -1.48E+OO    3.65E+OO      l.13E+Ol U WD         STJ       366679023   2/4/2015    Se-75        2.97E-03    1.75E+OO      5.75E+OO U WD         STJ       366679023   2/4/2015    Th-228       5.63E+OO    3.12E+OO      8.97E+OO U WD         STJ       366679023   2/4/2015    Zn-65        5.91E+OO    3.07E+OO      9.59E+OO U WD         STJ       366679023   2/4/2015     Zr-95      -2.68E+OO    2.57E+OO      7.49E+OO U WD         STJ       366679024   2/4/2015     I-131       3.42E-01    2.22E-01    I 6.61E-01 u WD         LTW       366679025   2/4/2015    Ac-228      -9.75E+OO    5.94E+OO      1.59E+Ol U WD        LTW        366679025   2/4/2015   Ag-108m       1.53E-01    l.35E+OO      3.91E+OO U WD        LTW        366679025   2/4/2015   Ag-llOm      -3.33E+OO    1.46E+OO      3.33E+OO U WD         LTW       366679025   2/4/2015    Ba-140       5.26E+OO    6.23E+OO      2.09E+Ol U WD         LTW       366679025 . 2/4/2015     Be-7        l.14E+Ol    1.llE+Ol      3.54E+Ol U D-73

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.        MDC       FLAGS TYPE      STATION       LSN       DATE      NUCLIDE           (pCi/L)   (pCi/L)     (pCi/L)
WD         LTW       366679025   2/4/2015    BETA         8.63E-Ol    5.82E-Ol     l.86E+OO u WD         LTW       36&deg;6679025  2/4/2015    Ce-141       l.16E+OO    2.32E+OO     7.62E+OO u WD         LTW       366679025   2/4/2015    Ce-144      -6.lOE+OO    8.09E+OO
* 2.51E+Ol u WD         LTW       366679025   2/4/2015    Co-57       -l.87E-02    1.1 lE+OO    3.62E+OO u WD         LTW       366679025   2/4/2015    Co-58        2.03E+OO    7.99E-Ol     3.53E+OO u WD         LTW       366679025   2/4/2015    Co-60        l.65E+OO    1.24E+OO     4.51E+OO u WD         LTW       366679025   2/4/2015     Cr-51       1.51E+Ol    1.20E+Ol     4.08E+Ol u WD         LTW       366679025   2/4/2015    Cs-134        l.93E-01   1.29E+OO     4.33E+OO u WD         LTW       366679025   2/4/2015    Cs-137       l.73E+OO    l.76E+OO     6.14E+OO u WD         LTW       366679025   2/4/2015     Fe-59       l.03E+OO    2.67E+OO     8.90E+OO u WD         LTW       366679025   2/4/2015     I-131      -1.03E+OO    2.25E+OO     7.23E+OO u WD         LTW       366679025   2/4/2015     K-40       -9.50E+OO    l.95E+Ol     6.34E+Ol u WD         LTW       366679025   2/4/2015    La-140      2.27E+OO     2.14E+oo     7.61E+OO u WD        LTW        366679025   2/4/2015    Mn-54       -6.00E-01    l.21E+OO     3.19E+OO u WD         LTW       366679025   2/4/2015    Nb-95       -3.43E+OO    l.56E+OO     3.54E+OO u WD         LTW       366679025   2/4/2015    Ru-103       8.39E-01    l.28E+OO     4.27E+OO u WD         LTW       366679025   2/4/2015    Ru-106      -2.67E+OO    l.04E+Ol     3.43E+Ol u WD         LTW       366679025   2/4/2015    Sb-124       4.70E-01    3.20E+OO     l.06E+Ol u WD         LTW       366679025   2/4/2015    Sb-125       3.52E+OO    3.32E+OO     l.13E+Ol u WD         LTW       366679025   2/4/2015     Se-75      -1.61E+OO    l.88E+OO     6.00E+OO u WD         LTW       366679025   2/4/2015    Th-228      -2.27E+OO    2.79E+OO     9.02E+OO u WD         LTW       366679025   2/4/2015     Zn-65      -8.80E-01    2.73E+OO     8.48E+OO u WD         LTW       366679025   2/4/2015     Zr-95       l.61E+OO    2.19E+OO     7.60E+OO U WD         LTW       366679026   2/4/2015     I-131      -3.32E-01     l.72E-01    6.46E-01 u WD         STJ       367474023  2118/2015    Ac-228       1.99E+Ol    7.85E+OO     1.71E+Ol UI WD         STJ       367474023  2/18/2015   Ag-108m       3.71E-01    9.49E-01     3.12E+OO U WD         STJ       367474023  2118/2015   Ag-llOm       4.53E-01    l.02E+OO     3.41E+OO U WD         STJ       367474023  2118/2015    Ba-140       l.llE+Ol    7.22E+OO     2.39E+Ol U WD         STJ       367474023  2/18/2015     Be-7       -2.59E+OO    9.93E+OO     3.17E+Ol U WD         STJ       367474023  2/18/2015    BETA        -8.06E-01    8.24E-01     2.92E+OO U WD         STJ       367474023  2/18/2015    Ce-141       9.07E-01    2.68E+OO     7.63E+OO U WD         STJ       367474023  2/18/2015    Ce-144      -l.60E+OO    8.89E+OO     2.51E+Ol U WD         STJ       367474023  2/18/2015    Co-57       -l.27E+OO    l.04E+OO     3.18E+OO U WD         STJ       367474023  2/18/2015     Co-58      -l.88E-02    1.14E+OO     3.71E+OO U WD         STJ       367474023  2/18/2015     Co-60      -1.06E+OO    l.07E+OO     3.13E+OO U WD         STJ       367474023  2/18/2015     Cr-51       6.39E+OO    l.27E+Ol     4.23E+Ol U WD         STJ       367474023  2/18i2015    Cs-134       6.18E-02    l.20E+OO     3.92E+OO U WD         STJ       367474023  2/18/2015    Cs-137       5.80E-01    1.llE+OO     3.70E+OO U WD         STJ       367474023  2118/2015     Fe-59      -8.58E-01    2.80E+OO     7.58E+OO U WD         STJ       367474023  2/18/2015     I-131       4.92E+OO    4.99E+OO     9.41E+OO U WD         STJ       367474023  2/18/2015     K-40        4.22E+Ol    2.70E+Ol     3.27E+Ol UI WD         STJ       367474023  2/18/2015    La-140       2.19E+OO    2.36E+OO     8.08E+OO U WD         STJ       367474023  2/18/2015    Mn-54       -l.27E-01    9.59E-01     3.09E+OO U WD         STJ       367474023  2118/2015    Nb-95        2.32E+OO    l.29E+OO     4.16E+OO U WD         STJ       367474023  2118/2015    Ru-103      -6.13E-01    1.28E+OO     4.18E+OO U WD         STJ       367474023  2/18/2015    Ru-106      -l.07E+Ol    9.76E+OO     2.96E+Ol U WD         STJ       367474023  2/18/2015    Sb-124      -4.78E+OO    3.0lE+OO     7.92E+OO U WD         STJ       367474023  2/18/2015    Sb-125       2.74E+OO    3.18E+OO     l.04E+Ol U WD         STJ       367474023  2/18/2015     Se-75       2.79E+OO    l.71E+OO     5.49E+OO U WD         STJ       367474023  2/18/2015    Th-228       3.26E-01    2.79E+OO     6.47E+OO U D-74

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        * (pCi/L)    (pCi/L)    (pCi/L)
WD         STJ       367474023 2/18/2015     Zn-65      -3.87E+OO    2.51E+OO    6.38E+OO u WD         STJ       367474023 2/18/2015     Zr-95       3.22E+OO    2.06E+OO    6.79E+OO u WD         STJ       367474024 2118/2015     I-131        l.23E-01   2.39E-01    7.77E-01 u WD         LTW       367474025 2/18/2015    Ac-228       7.lOE+OO    6.57E+OO    l.44E+Ol u WD         LTW       367474025 2/18/2015   Ag-108m       8.38E-01    7.92E-01    2.89E+OO u WD         LTW       367474025 2/18/2015   Ag-llOm      -2.32E-01    9.67E-01    3.12E+OO u WD         LTW       367474025 2/18/2015    Ba-140      -6.58E+OO    6.81E+OO    2.llE+Ol u WD         LTW       367474025 2/18/2015     Be-7       -4.42E+OO    8.58E+OO    2.79E+Ol u WD         LTW       367474025 2/18/2015    BETA         l.74E+OO    l.20E+OO    3.61E+OO u WD         LTW       367474025 2118/2015    Ce-141      -5.32E-Ol    l.70E+OO    5.35E+OO u WD         LTW       367474025 2/18/2015    Ce-144      -1.IOE+OO    6.44E+OO    l.83E+Ol u WD         LTW       367474025 2118/2015    Co-57       -8.20E-Ol    9.llE-01    2.29E+OO U WD         LTW       367474025 2/18/2015    Co-58       -l.02E+OO    l.15E+OO    3.42E+OO U WD         LTW       367474025 2/18/2015    Co-60        l.18E+OO    1.00E+OO    3.53E+OO U WD         LTW       367474025 2/18/2015     Cr-51      -7.73E+OO    1.17E+Ol    3.19E+Ol U WD         LTW       367474025 2/18/2015    Cs-134      -2.67E+OO    l.32E+OO    3.20E+OO U WD         LTW       367474025 2/18/2015    Cs-137      -l.51E+OO    l.llE+OO    3.16E+OO U WD         LTW       367474025 2/18/2015     Fe-59       l.25E+OO    1.99E+OO    6.78E+OO U WD         LTW       367474025 2/18/2015     I-131       3.56E-Ol    2.54E+OO    8.28E+OO U WD         LTW       367474025 2/18/2015     K-40        2.04E+Ol    l.82E+Ol    3.61E+Ol U WD         LTW       367474025 2/18/2015    La-140      -2.69E+OO    2.18E+OO    6.03E+OO U WD         LTW       367474025 2/18/2015    Mn-54       -1.40E+OO    l.16E+OO    3.49E+OO U WD         LTW       367474025 2/18/2015    Nb-95        3.23E-Ol    1.1 lE+OO   3.65E+OO U WD         LTW       367474025 2/18/2015    Ru-103       1.67E+OO    l.18E+OO    3.95E+OO U WD         LTW       367474025 2/18/2015    Ru-106      -1.0lE+Ol    8.94E+OO    2.65E+Ol U WD         LTW       367474025 2/18/2015    Sb-124       6.67E+OO    3.llE+OO    9.28E+OO U WD         LTW       367474025 2/18/2015    Sb-125      -2.25E+OO    2.64E+OO    7.17E+OO U WD         LTW       367474025 2/18/2015     Se-75       8.04E-01    1.32E+OO    4.42E+OO U WD         LTW       367474025 2/18/2015    Th-228       l.39E+OO    2.30E+OO    5.34E+OO U WD         LTW       367474025 2/18/2015     Zn-65      -1.86E+OO    2.22E+OO    6.69E+OO U WD         LTW       367474025 2/18/2015     Zr-95       l.88E+OO    2.00E+OO    6.67E+OO U WD         LTW       367474026 2/18/2015     I-131      -2.68E-Ol    2.15E-Ol    7.24E-01 u WD         STJ       372306001 2/12/2015      H-3       -6.08E+02    2.95E+02    1.09E+03 U
                                                       -  -3.91E+02    3.07E+02    l.08E+03 U WD         LTW       372306002 2/12/2015      H-3 WD         STJ       368255023  3/4/2015    Ac-228       l.79E+OO    4.82E+OO    1.65E+Ol U WD         STJ       368255023  3/4/2015   Ag-108m      -6.61E-01    1.37E+OO    3.99E+OO U WD         STJ       368255023  3/4/2015   Ag-llOm       5.13E-02    1.28E+OO    4.17E+OO U WD         STJ       368255023  3/4/2015    Ba-140      -1.54E+OO    7.08E+OO    2.30E+Ol U WD         STJ       368255023  3/4/2015     Be-7        l.39E+Ol    9.12E+OO    3.82E+Ol U WD         STJ       368255023  3/4/2015    BETA         l.42E+OO    9.94E-Ol    3.03E+OO U WD         STJ       368255023  3/4/2015    Ce-141       1.84E+OO    2.66E+OO    8.41E+OO U WD         STJ       368255023  3/4/2015    Ce-144      -l.42E+Ol    9.91E+OO    2.78E+Ol U WD         STJ       368255023  3/4/2015    Co-57       -l.38E+OO    l.21E+OO    3.52E+OO u WD         STJ       368255023  3/4/2015    Co-58        2.55E+OO    l.40E+OO    4.89E+OO u WD         STJ       368255023  3/4/2015    Co-60        3.14E+OO    l.58E+OO    5.63E+OO u WD         STJ       368255023  3/4/2015     Cr-51      -2.1 lE+Ol   l.44E+Ol    4.0lE+Ol u WD         STJ       368255023  3/4/2015    Cs-134      -1.21E-OI    1.45E+OO    4.82E+OO u WD         STJ       368255023  3/4/2015    Cs-137      -1.llE+OO    l.66E+OO    5.12E+OO u WD         STJ       368255023  3/4/2015     Fe-59       4.70E+OO    2.64E+OO    9.31E+OO u WD         STJ       368255023  3/4/2015     I-131       6.43E-01    2.65E+OO    8.58E+OO u D-75

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC     STD.DEV.       MDC         FLAGS TYPE    STATION       LSN       DATE     NUCLIDE          (pCi/L)    (pCi/L)     (pCi/L)
WD        STJ       368255023  3/4/2015      K-40       8.88E+OO    l.78E+Ol     6.09E+Ol u WD        STJ       368255023  3/4/2015     La-140     -l.13E+OO    2.26E+OO     6.92E+OO u WD        STJ       368255023  3/4/2015     Mn-54      -l.76E+OO    l.40E+OO     3.99E+OO u WD        STJ       368255023  3/4/2015     Nb-95       5.85E-01    l.71E+OO     5.30E+OO u*
WD        STJ       368255023  3/4/2015     Ru-103     -2.34E+OO    l.67E+OO     4.78E+OO u WD        STJ       368255023  3/4/2015     Ru-106     -4.42E+OO    l.39E+Ol     4.41E+Ol u WD        STJ       368255023  3/4/2015     Sb-124     -7.93E+OO    5.02E+OO     9.68E+OO u WD        STJ       368255023  3/4/2015     Sb-125      2.49E+OO    3.65E+OO     l.25E+Ol u WD        STJ       368255023  3/4/2015      Se-75      7.86E-02    l.92E+OO     6.30E+OO u WD        STJ       368255023  3/4/2015     Th-228     -l.90E+OO    2.92E+OO     9.39E+OO u WD        STJ       368255023  3/4/2015     Zn-65      -3.13E-01    3.89E+OO     l.07E+Ol u WD        STJ       368255023  3/4/2015      Zr-95      7.65E-01    2.56E+OO     8.76E+OO u WD        LTW       368255024  3/4/2015     Ac-228     -5.90E+OO    5.08E+OO     1.41E+Ol u WD        LTW       368255024  3/4/2015   Ag-108m      -2.15E-02    1.15E+OO     3.83E+OO u WD        LTW       368255024  3/4/2015   Ag-1 lOm      3.75E-02    l.38E+OO     3.93E+OO u WD        LTW       368255024  3/4/2015     Ba-140      8.lOE+OO    6.41E+OO     2.19E+Ol u
 . WD        LTW       368255024  3/4/2015      Be-7       5.30E+OO    l.OlE+Ol     3.46E+Ol u WD        LTW       368255024  3/4/2015     BETA        l.02E+OO    1.13E+OO     3.57E+OO
* u WD        LTW       368255024  3/4/2015     Ce-141      3.40E+OO    2.43E+OO     7.65E+OO u WD        LTW       368255024  3/4/2015     Ce-144     -8.45E+OO    8.70E+OO     2.72E+Ol u WD        LTW       368255024  3/4/2015     Co-57       4.02E-01    l.02E+OO     3.43E+OO u WD        LTW       368255024  3/4/2015     Co-58      -7.66E-01    1.19E+OO     3.61E+OO u WD        LTW       368255024  3/4/2015     Co-60       5.89E-01    l.59E+OO    '4.70E+OO u WD        LTW       368255024  3/4/2015      Cr-51      l.79E+OO    1.14E+Ol     3.69E+Ol u WD        LTW       368255024  3/4/2015     Cs-134     -9.60E-01    l.46E+OO     4.46E+OO u WD        LTW       368255024  3/4/2015     Cs-137      5.03E+OO    l.27E+OO     3.68E+OO UI WD        LTW       368255024  3/4/2015      Fe-59     -7.44E-01    2.33E+OO     7.52E+OO u WD        LTW       368255024  3/4/2015      I-131      l.98E+OO    2.16E+OO     7.43E+OO u WD        LTW       368255024  3/4/2015      K-40      -l.88E+Ol    l.58E+Ol     4.86E+Ol u WD        LTW       368255024  3/4/2015     La-140      5.78E-02    l.92E+OO     6.27E+OO u WD        LTW       368255024  3/4/2015     Mn-54       7.04E-01    l.23E+OO     4.13E+OO u WD        LTW       368255024  3/4/2015     Nb-95      -3.24E-01    l.26E+OO     4.02E+OO u WD        LTW       368255024  3/4/2015     Ru-103     -2.90E-01    l.35E+OO     4.45E+OO u WD        LTW       368255024  3/4/2015     Ru-106       9.57E-01   l.03E+Ol     3.43E+Ol u WD        LTW       368255024  3/4/2015     Sb-124      2.61E+OO    2.85E+OO     l.OlE+Ol u WD        LTW       368255024  3/4/2015     Sb-125     -2.82E+OO    3.51E+OO     1.llE+Ol u WD        LTW       368255024  3/4/2015      Se-75      4.78E-01    l.71E+OO     5.60E+OO u WD        LTW       368255024  3/4/2015     Th-228      2.86E+OO    3.08E+OO     8.42E+OO u WD        LTW       368255024  3/4/2015     Zn-65      -3.79E+OO    2.74E+OO     7.49E+OO u WD        LTW       368255024  3/4/2015      Zr-95     -l.79E+OO    2.52E+OO     7.34E+OO u WD        STJ       368255025  3/4/2015      I-131     -4.38E-01    2.02E-01     6.89E-01 u WD        LTW       368255026. 3/4/2015      I-131     -l.24E-01     l.23E-Ol    4.14E-01 u WD        STJ       369215023  3/18/2015    Ac-228     -4.99E+OO    6.04E+OO     l.82E+Ol u WD        STJ       369215023  3/18/2015   Ag-108m      -2.62E-01   l.13E+OO     3.60E+OO u WD        STJ       369215023  3/18/2015   Ag-llOm     -1.22E+OO    l.21E+OO     3.21E+OO u WD        STJ       369215023  3/18/2015    Ba-140     -4.28E+OO    5.81E+OO     l.85E+Ol u WD        STJ       369215023  3/18/2015     Be-7      -l.59E+Ol    1.llE+Ol     3.05E+Ol u WD        STJ       369215023  3/18/2015    BETA        -6.24E-01   l.08E+OO     3.63E+OO u WD        STJ       369215023  3/18/2015    Ce-141     -2.14E+OO    2.55E+OO     6.80E+OO u WD        STJ       369215023  3/18/2015    Ce-144      2.26E+Ol    9.87E+OO     2.94E+Ol u D-76

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.      MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD         STJ       369215023 3/18/2015   Co-57        2.52E-01    l.07E+OO    3.49E+OO u WD         STJ       369215023 3/18/2015   Co-58        3.02E-04    l.08E+OO    3.44E+OO u WD         STJ       369215023 3/18/2015   Co-60       -2.lOE+OO    l.39E+OO    3.62E+OO u WD         STJ       369215023 3/18/2015    Cr-51      -7.14E+OO    1.15E+Ol    3.66E+Ol u WD         STJ       369215023 3/18/2015   Cs-134       2.02E+OO    l.49E+OO    4.63E+OO u WD         STJ       369215023 3/18/2015   Cs-137       2.57E-01    l.32E+OO    3.90E+OO u WD         STJ       369215023 3/18/2015    Fe-59       l.90E+OO    2.51E+OO    8.74E+OO u WD         STJ       369215023 3/18/2015    1-131       5.09E-02    2.29E+OO    6.58E+OO u WD         STJ       369215023 3/18/2015    K-40        6.09E+OO    l.89E+Ol    4.61E+Ol u WD         STJ       369215023 3/18/2015   La-140        l.42E-01   2.08E+OO    6.83E+OO u WD         STJ       369215023 3/18/2015   Mn-54       -1.58E+OO    1.33E+OO    3.81E+OO u WD         STJ       369215023 3/18/2015   Nb-95        2.79E~02    1.1 IE+OO   3.67E+OO u WD         STJ       369215023 3/18/2015   Ru-103      -1.66E+OO    l.35E+OO    3.83E+OO u WD         STJ       369215023 3/18/2015   Ru-106       1.03E+Ol    l.16E+Ol    3.99E+Ol u WD         STJ       369215023 3/18/2015   Sb-124      -4.14E-02    2.97E+OO    9.63E+OO u WD         STJ       369215023 3/18/2015   Sb-125      -7.lOE+OO    3.47E+OO    8.34E+OO u WD         STJ       369215023 3/18/2015    Se-75      -7.07E-01    1.64E+OO    5.38E+OO u WD         STJ       369215023 3/18/2015   Th-228       2.32E+OO    2.96E+OO    8.77E+OO u WD         STJ       369215023 3/18/2015    Zn-65       l.35E+OO    2.50E+OO    8.64E+OO u WD         STJ       369215023 3/18/2015    Zr-95       l.76E+OO    2.05E+OO    7.05E+OO u WD         LTW       369215024 3/18/2015   Ac-228      -7.39E+OO    6.lOE+OO    1.71E+Ol u WD         LTW       369215024 3/18/2015  Ag-108m       1.59E+OO    l.34E+OO    4.52E+OO u WD         LTW       369215024 3/18/2015  Ag-llOm       6.57E-01    1.38E+OO    4.74E+OO u WD.        LTW       369215024 3/18/2015   Ba-140      2.54E+OO     7.48E+OO    2.24E+Ol u WD         LTW       369215024 3/18/2015    Be-7        l.22E+Ol    l.44E+Ol    4.71E+Ol u WD         LTW       369215024 3/18/2015   BETA         2.02E+OO    l.05E+OO    3.12E+OO u WD         LTW       369215024 3/18/2015   Ce-141       3.02E+OO    2.66E+OO    8.69E+OO u WD         LTW       369215024 3/18/2015   Ce-144       l.91E+Ol    l.09E+Ol    3.47E+Ol u WD         LTW       369215024 3/18/2015    Co-57       6.27E-Ol    l.27E+OO    4.21E+OO u WD         LTW       369215024 3/18/2015   Co-58        7.53E-Ol    l.43E+OO    4.87E+OO u WD         LTW       369215024 3/18/2015   Co-60        4.0IE-01    l.25E+OO    4.28E+OO u WD         LTW       369215024 3/18/2015    Cr-51       3.89E+OO    l.27E+Ol    4.27E+Ol u WD         LTW       369215024 3/18/2015   Cs-134       6.72E-Ol    l.49E+OO    5.06E+OO u WD         LTW       369215024 3/18/2015   Cs-137        1.08E-Ol   l.62E+OO    4.94E+OO u WD         LTW       369215024 3/18/2015    Fe-59       4.07E-02    2.54E+OO    8.52E+OO u WD         LTW       369215024 3/18/2015    1-131      -3.25E+OO    2.27E+OO    6.30E+OO u WD         LTW       369215024 3/18/2015    K-40       -3.37E+OO    2.27E+Ol    7.93E+Ol u WD         LTW       369215024 3/18/2015   La-140       l.54E+OO    2.14E+OO    7.52E+OO u WD         LTW       369215024 3/18/2015   Mn-54       -l.75E+OO    l.53E+OO    4.32E+OO u WD         LTW       369215024 3/18/2015   Nb-95       -7.05E-01    l.31E+OO    4.08E+OO u WD        LTW        369215024 3/18/2015   Ru-103      -1.42E+OO    l.70E+OO    5.06E+OO u WD         LTW       369215024 3/18/2015   Ru-106       2.89E+OO    l.27E+Ol    4.30E+Ol u WD         LTW       369215024 3/18/2015   Sb-124       3.29E+OO    3.62E+OO    1.28E+Ol u WD         LTW       369215024 3/18/2015   Sb-125       2.37E+OO    4.04E+OO    1.35E+Ol u WD         LTW       369215024 3/18/2015    Se-75       -8.26E-Ol   l.92E+OO    6.29E+OO u WD         LTW       369215024 3/18/2015   Th-228       l.61E+OO    3.lOE+OO    9.91E+OO U WD         LTW       369215024 3/18/2015    Zn-65      -7.23E+OO    3.31E+OO    6.62E+OO U WD         LTW       369215024 3/18/2015    Zr-95      -3.99IHOO    2.46E+OO    6.14E+OO U WD         STJ       369215025 3/18/2015    1-131      -1.75E-01    2.44E-01    8.46E-01 u WD         LTW       369215026 3/18/2015    1-131       -8.53E-02   2.46E-01    8.30E-Ol U D-77

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN       DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WD         STJ       370078023   4/1/2015    Ac-228       l.75E+OO    5.23E+OO    9.69E+OO u WD         STJ       370078023   4/1/2015   Ag-108m      -7.24&#xa3;-01    6.07&#xa3;-01    l.83E+OO u WD         STJ       370078023   4/1/2015   Ag-llOm      -7.56&#xa3;-01    6.47&#xa3;-01    1.99E+OO u WD         STJ       370078023   4/1/2015    Ba-140       3.53&#xa3;-01    3.40E+OO    9.96E+OO u WD         STJ       370078023   4/1/2015     Be-7       -3.76E+OO    5.44E+OO    1.69E+Ol u WD         STJ       370078023   4/1/2015    BETA         1.82E+OO    1.21E+OO    3.54E+OO u WD         STJ       370078023   4/1/2015    Ce-141      -2.96E+OO    l.35E+OO    3.64E+OO u WD         STJ       370078023   4/1/2015    Ce-144       1.60E+OO    4.87E+OO    1.42E+Ol u WD         STJ       370078023   4/1/2015    Co-57       -5.85&#xa3;-01    5.73&#xa3;-01    l.80E+OO u WD         STJ       370078023   4/1/2015    Co-58        4.71&#xa3;-02    6.57&#xa3;-01    2.13E+OO u WD         STJ       370078023   4/112015    Co-60       -1.98&#xa3;-01    6.46&#xa3;-01    2.06E+OO u WD         STJ       370078023   4/1/2015     Cr-51      -3.22E+OO    6.06E+OO    l.97E+Ol u WD         STJ       370078023   4/1/2015    Cs-134       2.28E+OO    8.98&#xa3;-01    2.56E+OO u WD         STJ       370078023   4/1/2015    Cs-137       ~6.78E-01   l.05E+OO    2.39E+OO u WD         STJ       370078023   4/1/2015     Fe-59       l.50E+OO    l.76E+OO    4.61E+OO u WD         STJ       370078023   4/1/2015     1-131      -l.75E+OO    l.18E+OO    3.50E+OO u WD         STJ       370078023   4/1/2015     K-40        6.07E+OO    l.65E+Ol    2.llE+Ol u WD        STJ        370078023   4/1/2015    La-140      -2.65E-01    1.04E+OO    3.27E+OO u WD         STJ       370078023   4/112015    Mn-54       -3.29E-01    6.58E-01    2.08E+OO u WD         STJ       370078023   4/1/2015    Nb-95        l.OOE+OO    8.95&#xa3;-01    2.09E+OO u WD         STJ       370078023   4/1/2015    Ru-103      -9.lOE-01    6.83&#xa3;-01    2.13E+OO u WD         STJ       370078023   4/1/2015    Ru-106       5.58E+OO    5.71E+OO    l.89E+Ol u WD         STJ       370078023   4/1/2015    Sb-124      -1.02E+OO    1.59E+OO    5.03E+OO u WD        STJ        370078023   4/1/2015    Sb-125      -3.31E+OO    l.97E+OO    5.60E+OO u WD        STJ        370078023   4/1/2015     Se-75      -7.36E-01    8.67E-01    2.81E+OO u WD        STJ        370078023   4/1/2015    Th-228       2.llE-02    1.99E+OO    4.36E+OO u WD         STJ       370078023   4/1/2015    Zn-65        7.40E-01    1.54E+OO    4.44E+OO u WD         STJ       370078023   4/1/2015     Zr-95      -l.38E+OO    1.63E+OO    3.62E+OO u WD         STJ       370078024   4/1/2015     1-131      -3.60E-01    2.06E-01    7.69E-01 u WD        LTW        370078025   4/1/2015    Ac-228      -2.80E+OO    2.86E+OO    7.9JE+OO u WD        LTW        370078025   4/1/2015   Ag-108m      -2.15E-02    5.06E-Ol    1.66E+OO u WD        LTW        370078025   4/1/2015   Ag-llOm       2.38E-01    5.21&#xa3;-01    l.68E+OO u WD        LTW        370078025   4/112015    Ba-140      -2.15E+OO    2.65E+OO    8.16E+OO u WD        LTW        370078025   4/1/2015     Be-7       -9.74E-01    5.52E+OO    1.56E+Ol u WD        LTW        370078025   4/1/2015    BETA         6.63E-01    4.54E-01    l.43E+OO u WD        LTW        370078025   4/1/2015    Ce-141       1.40E-01    l.lOE+OO    3.18E+OO u WD        LTW        370078025   4/1/2015    Ce-144      -5.96E+OO    3.97E+OO
* l.17E+Ol u WD        LTW        370078025   4/1/2015    Co-57        3.48&#xa3;-01    5.02E-01    l.64E+OO u WD        LTW        370078025   4/1/2015    Co-58       -2.62&#xa3;-01    6.06&#xa3;-01    l.70E+OO u WD        LTW        370078025   4/1/2015    Co-60        1.92E+OO    7.12&#xa3;-01    2.16E+OO u WD        LTW        370078025   4/1/2015     Cr-51       l.93E+OO    7.60E+OO    l.76E+Ol u WD        LTW        370078025   4/1/2015    Cs-134       7.58E-01    9.76E-01    l.98E+OO u WD        LTW        370078025   4/1/2015    Cs-137       3.0lE-01    5.20E-01    1.77E+OO u WD        LTW        370078025   4/1/2015    Fe-59       -3.68E+OO   -l.80E+OO    3.57E+OO u WD        LTW        370078025   4/1/2015     1-131      -1.08E-01    9.45E-01    3.12E+OO u WD        LTW        370078025   4/1/2015     K-40       -l.43E+Ol    1.15E+Ol    2:40E+Ol u WD        LTW        370078025   4/1/2015    La-140      -1.61&#xa3;-01    9.34E-01    3.05E+OO u WD        LTW        370078025 . 4/1/2015    Mn-54        6.53E-01    5.25E-01    l.71E+OO u WD        LTW        370078025   4/1/2015    Nb-95        8.09E-01    5.80E-01    l.92E+OO u WD        LTW        370078025   4/1/2015    Ru-103      -3.94&#xa3;-01    5.85E-01    1.84E+OO u D-78

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.        MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)     (pCi/L)    (pCi/L)
WD         LTW       370078025  4/1/2015    Ru-106      -3.62E+OO     5.27E+OO    l.62E+Ol u WD         LTW       370078025  4/1/2015    Sb-124      -2.0IE+OO     2.36E+OO    4.04E+OO u WD         LTW       370078025  4/1/2015    Sb-125       7.59E-Ol     l.53E+OO    5.05E+OO u WD         LTW       370078025  4/1/2015     Se-75       5.82E-Ol     7.66E-Ol    2.58E+OO u WD         LTW       370078025  4/1/2015    Th-228       2.87E+OO     2.29E+OO    4.08E+OO u WD         LTW       370078025  4/1/2015     Zn-65      -l.77E+OO     l.52E+OO    3.76E+OO u WD         LTW       370078025  4/1/2015     Zr-95       3.28E-Ol     9.42E-Ol    3.18E+OO u WD         LTW       370078026  411/2015     1-131       5,40E-Ol     2.31E-Ol    6.16E-Ol u WD         STJ       371275023 4/15/2015    Ac-228      -5.18E-Ol     3.78E+OO    l.20E+Ol u WD         STJ       371275023 4/15/2015   Ag-108m       l.IOE+OO     8.47E-Ol    2.79E+OO u WD         STJ       371275023 4/15/2015   Ag-llOm      -3.30E-Ol     7.94E-Ol    2.46E+OO u WD         STJ       371275023 4/15/2015    Ba-140       l.16E+OO     3.43E+OO    l.13E+Ol u WD         STJ       371275023 4/15/2015     Be-7        l.49E+Ol     7.79E+OO    2.50E+Ol u WD         STJ       371275023 4/15/2015    BETA.        8.73E-Ol     8.73E-Ol    2.55E+OO u WD         STJ       371275023 4/15/2015    Ce-141       l.75E+OO     l.48E+OO    4.73E+OO u WD         STJ       371275023 4/15/2015    Ce-144      -6.62E+OO     5.90E+OO    l.78E+Ol u WD         STJ       371275023 4/15/2015    Co-57       -7.7IE-01     8.llE-01    2.19E+OO u WD         STJ       371275023 4/15/2015    Co-58        4.62E-Ol     9.0IE-01    2.71E+OO u WD         STJ       371275023 4/15/2015    Co-60        6.74E-02     l.08E+OO    3.0IE+OO u WD         STJ       371275023 4/15/2015     Cr-51      -7.77E+OO     7.75E+OO    2.42E+Ol u WD         STJ       371275023 4/15/2015    Cs-134       3.32E-Ol     8.97E-01    3.05E+OO u WD         STJ       371275023 4/15/2015    Cs-137      -8.15E-Ol     l.IOE+OO
* 2.93E+OO u WD         STJ       371275023 4/15/2015     Fe-59       3.15E+OO     l.82E+OO    6.07E+OO u WD         STJ       371275023 4/15/2015     1-131       l.62E+OO     l.34E+OO    4.48E+OO u WD         STJ       371275023 4/15/2015     K-40        7.66E+OO     l.73E+Ol    2.78E+Ol u WD         STJ       371275023 4/15/2015    La-140      -l.93E+OO     l.43E+OO    4.00E+OO u WD         STJ       371275023 4/15/2015    Mn-54       -9.36E-Ol     7.29E-Ol    2.llE+OO u WD         STJ       371275023 4/15/2015    Nb-95        2.55E-Ol     7.65E-01    2.60E+OO u WD         STJ       371275023 4/15/2015    Ru-103       4.92E-Ol     9.40E-Ol    3.IOE+OO u WD         STJ       371275023 4/15/2015*   Ru-106       l.03E+OO     7.76E+OO    2.51E+Ol u WD         STJ       371275023 4/15/2015    Sb-124      -l.02E+OO     l.95E+OO    6.llE+OO u WD         STJ       371275023 4/15/2015    Sb-125      -l.36E+OO     2.3IE+OO    7.31E+OO u WD         STJ       371275023 4/15/2015     Se-75      -7.21E-02     l.25E+OO    3.71E+OO u WD         STJ       371275023 4/15/2015    Th-228       5.77E+OO   '3.21E+OO     6.29E+OO u WD         STJ       371275023 4/15/2015    Zn-65       -l.68E+OO     l.98E+OO    5.90E+OO u WD         STJ       371275023 4/15/2015     Zr-95      -7.55E-Ol     l.48E+OO    4.80E+OO u WD         STJ       371275024 4/15/2015     1-131      -l.12E-01     2.IOE-01    7.20E-Ol u WD         LTW       371275025 4/15/2015    Ac-228       7.IOE-01     5.80E+OO    l.95E+Ol u WD         LTW       371275025 4/15/2015   Ag-108m       8.50E-01     l.18E+OO    3.97E+OO u WD         LTW       371275025 4/15/2015   Ag-llOm       6.02E-Ol     l.28E+OO    3.75E+OO u WD         LTW       371275025 4/15/2015    Ba-140      -7.87E+OO     6.37E+OO    l.82E+Ol u WD        LTW        371275025 4/15/2015     Be-7        5.14E+OO     l.06E+Ol    3.56E+Ol u WD         LTW       371275025 4/15/2015    BETA         2.76E+OO     l.13E+OO    2.95E+OO u WD         LTW       371275025 4/15/2015    Ce-141       3.47E+OO     2.80E+OO    8.04E+OO u WD         LTW       371275025 4/15/2015    Ce-144       l.82E+Ol     l.03E+Ol    3.22E+Ol u WD         LTW       371275025 4/15/2015    Co-57       -6.88E-Ol     I&deg;.22E+OO   3.84E+OO u WD        LTW        371275025 4/15/2015    Co-58       -l.22E+OO     l.19E+OO    3.57E+OO u WD         LTW       371275025 4/15/2015    Co-60        2.51E+OO     l.18E+OO    4.22E+OO u WD        LTW        371275025 4/15/2015     Cr-51      -4.76E+OO     l.32E+Ol    3.79E+Ol u WD         LTW       371275025 4/15/2015    Cs-134       6.65E-02     l.26E+OO    3.97E+OO u D-79

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD         LTW       371275025 4/15/2015     Cs-137      7.73E-Ol    l.27E+OO    3.97E+OO u WD         LTW       371275025 4/15/2015      Fe-59     -2.08E+OO    2.70E+OO    8.21E+OO u WD         LTW       371275025 4/15/2015      I-131     -l.57E+OO    2.38E+OO    7.58E+OO u WD         LTW       371275025 4/15/2015      K-40       l.02E+Ol    1.44E+Ol    3.16E+Ol u WD         LTW       371275025 4115/2015     La-140     -l.24E+OO    1.94E+OO    5.67E+OO u WD         LTW       371275025 4/15/2015     Mn-54       6.71E-Ol    l.26E+OO    4.35E+OO u WD         LTW       371275025 4/15/2015      Nb-95      2.37E+OO    l.25E+OO    4.29E+OO u WD         LTW       371275025 4/15/2015     Ru-103     -4.68E-02    l.52E+OO    4.34E+OO u WD         LTW       371275025 4/15/2015     Ru-106      l.18E+Ol    l.19E+Ol    3.98E+Ol u WD         LTW       371275025 4/15/2015     Sb-124      l.32E+OO    2.04E+OO    7.41E+OO u WD         LTW       371275025 4/15/2015     Sb-125     -4.0IE-01    3.26E+OO    l.07E+Ol u WD         LTW       371275025 4/15/2015      Se-75     -3.07E-01    l.61E+OO    5.37E+OO u WD         LTW       371275025 4/15/2015     Th-228      5.55E+OO    3.64E+OO    9.79E+OO u WD         LTW       371275025 4/15/2015      Zn-65     -5.06E+OO    2.87E+OO    7.03E+OO u WD         LTW       371275025 4/15/2015      Zr-95     -5.17E-01    2.36E+OO    7.42E+OO u WD         LTW       371275026 4/15/2015      I-131     -2.96E-01    2.llE-01    7.67E-01 u WD         STJ       372180023 4/29/2015     Ac-228      2.82E+OO    4.93E+OO    l.57E+Ol u WD         STJ       372180023 4/29/2015   Ag-108m      -3.86E-Ol    1.02E+OO    3.18E+OO u.
WD         STJ       372180023 4/29/2015   Ag-nom        2.0IE-01    1.04E+OO    3.00E+OO u WD         STJ       372180023 4/29/2015     Ba-140      8.61E+OO    6.13E+OO    2.06E+Ol u WD         STJ       372180023 4/29/2015      Be-7      -3.06E+OO    9.29E+OO    3.08E+Ol u WD         STJ       372180023 4/29/2015      BETA       2.94E+OO    l.22E+OO    3.28E+OO u WD         STJ       372180023 4/29/2015     Ce-141      3.26E-Ol    2.26E+OO    6.84E+OO u WD         STJ       372180023 4/29/2015     Ce-144     -2.03E+OO    8.31E+OO    2.50E+Ol u WD         STJ       372180023 4/29/2015
* Co-57     -3.69E-01    l.08E+OO    3.23E+OO u WD         STJ       372180023 4/29/2015      Co-58     -8.02E-Ol    l.13E+OO    3.46E+OO u WD         STJ       372180023 4/29/2015      Co-60      2.26E+OO    1.16E+OO    3.99E+OO u WD         STJ       372180023 4/29/2015      Cr-51     -9.41E+OO    l.14E+Ol    3.56E+Ol u WD         STJ       372180023 4/29/2015     Cs-134     -l.13E+OO    l.27E+OO    3.81E+OO u WD         STJ       372180023 4/29/2015     Cs-137      l.99E+OO    l.27E+OO    3.IOE+OO u WD         STJ       372180023 4/29/2015      Fe-59     -l.24E+OO    2.12E+OO    6.64E+OO u WD         STJ       372180023 4/29/2015      1-131     -2.65E+OO    2.72E+OO    7.lOE+OO u WD         STJ       372180023 4/29/2015      K-40       5.78E+Ol    2.0IE+Ol    3.39E+Ol UI WD         STJ       372180023 4/29/2015     La-140      l.39E+OO    l.89E+OO    5.88E+OO u WD         STJ       372180023 4/29/2015     Mn-54      -4.0IE-01    l.15E+OO    2.91E+OO u WD         STJ       372180023 4/29/2015      Nb-95     -7.47E-Ol    l.03E+OO    3.14E+OO u WD         STJ       372180023 4/29/2015     Ru-103      l.19E+OO    l.25E+OO    4.24E+OO u WD         STJ       372180023 4/29/2015     Ru-106      l.28E+Ol    l.08E+Ol    3.63E+Ol u WD         STJ       372180023 4/29/2015     Sb-124      4.38E+OO    2.64E+OO    9.42E+OO u WD         STJ       372180023 4/29/2015     Sb-125     -5.53E+OO    3.66E+OO    8.50E+OO u WD         STJ       372180023 4/29/2015      Se-75     -l.12E+OO    l.85E+OO    5.19E+OO u WD         STJ       372180023 4/29/2015     Th-228     -3.60E+OO    2.85E+OO    7.87E+OO u WD         STJ       372180023 4/29/2015      Zn-65       l.94E-Ol   2.41E+OO    8.03E+OO u WD         STJ       372180023 4/29/2015      Zr-95      l.74E+OO    2.03E+OO    6.83E+OO u WD         STJ       372180024 4/29/2015      I-131      3.90E-02    2.07E-01    6.69E-01 u WD         LTW       372180025 4/29/2015     Ac-228      l.08E+OO    4.54E+OO    l.36E+Ol u WD        LTW        372180025 4/29/2015   Ag-108m       4.59E-01    8.65E-Ol    2.93E+OO u WD         LTW       372180025 4/29/2015   Ag-l!Om       3.36E-01    9.97E-Ol    3.28E+OO u WD         LTW       372180025 4/29/2015     Ba-140     2.59E+OO     5.48E+OO    l.83E+Ol u WD         LTW       372180025 4/29/2015      Be-7       l.89E+Ol    l.07E+Ol    3.12E+Ol u D-80

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)    (pCi/L)   (pCi/L)
WD         LTW       372180025 4/29/2015   BETA         2.71E+OO     l.15E+OO   3.06E+OO u WD         LTW       372180025 4/29/2015   Ce-141       1.58E+OO     l.SOE+OO   5.90E+OO u WD         LTW       372180025 4/29/2015   Ce-144       l.02E+Ol     6.88E+OO   2.14E+Ol u WD         LTW       372180025 4/29/2015   Co-57        2.46E+OO
* l.20E+OO   2.53E+OO u WD         LTW       372180025 4/29/2015   Co-58         l.41E-01    l.15E+OO   3.47E+OO u WD         LTW       372180025 4/29/2015   Co-60         9.3 lE-01   l.llE+OO   3.63E+OO u WD        *LTW       372180025 4/29/2015    Cr-51       3.02E+OO     l.48E+Ol   3.05E+Ol u WD         LTW       372180025 4/29/2015   Cs-134       l.35E+OO     1.33E+OO   4.23E+OO u WD         LTW       372180025 4/29/2015   Cs-137      -l.72E+OO     1.44E+OO   3.65E+OO u WD         LTW       372180025 4/29/2015    Fe-59       -3.17E-01    2.02E+OO   6.49E+OO u WD         LTW       372180025 4/29/2015    1-131       -l.40E-01    l.96E+OO   6.25E+OO u WD         LTW       372180025 4/29/2015    K-40        6.14E+Ol     l.49E+Ol   3.70E+Ol UI WD         LTW       372180025 4/29/2015   La-140       -2.96E-01    l.48E+OO   4.74E+OO u WD         LTW       372180025 4/29/2015   Mn-54       -l.47E+OO     l.04E+OO   2.99E+oo u WD         LTW       372180025 4/29/2015   Nb-95        -2.00E-01    9.35E-01   3.lOE+OO u WD         LTW       372180025 4/29/2015   Ru-103        3.0SE-02    l.09E+OO   3.61E+OO u WD         LTW       372180025 4/29/2015   Ru-106      -5.31E+OO     9.0lE+OO   2.82E+Ol u WD         LTW       372180025 4/29/2015   Sb-124      -1.llE+OO     2.89E+OO   9.llE+OO u WD         LTW       372180025 4/29/2015   Sb-125       3.60E+OO     2.70E+OO   9.06E+OO u WD         LTW       372180025 4/29/2015    Se-75       -7.67E-Ol    l.29E+OO   4.09E+OO u WD         LTW       372180025 4/29/2015   Th-228       l.28E+OO     3.0lE+OO   6.82E+OO u WD         LTW       372180025 4/29/2015    Zn-65      -2.54E+OO     2.29E+OO   6.63E+OO u WD         LTW       372180025 4/29/2015    Zr-95       l.54E+OO     l.64E+OO   5.67E+OO u WD         LTW       372180026 4/29/2015    1-131        6.45E-01    2.63E-01   7.lOE-01 u WD         STJ       373202023 5/13/2015   Ac-228        3.74E-OI    4.02E+OO   l.18E+OI u WD         STJ       373202023 5/13/2015  Ag-108m       -l.95E-01    7.87E-01   2.60E+OO u WD         STJ       373202023 5/13/2015  Ag-llOm        7.95E-OI    8.37E-01   2.SOE+OO u WD         STJ       373202023 5/13/2015   Ba-140       5.00E+OO     5.48E+OO   1.12E+OI u WD         STJ       373202023 5/13/2015    Be-7       -l.24E+OO     7.84E+OO   2.59E+Ol u WD         STJ       373202023 5/13/2015   BETA         2.29E+OO     l.16E+OO   3.06E+OO u WD         STJ       373202023 5/13/2015   Ce-141       -3.49E-OI    2.04E+OO   5.36E+OO u WD         STJ       373202023 5/13/2015   Ce-144       l.13E+OI     7.05E+OO   2.0lE+Ol u WD         STJ       373202023 5/13/2015   Co-57         2.22E-Ol    8.14E-01   2.72E+OO u WD         STJ       373202023 5/13/2015   Co-58         2.92E-Ol    8.90E-01   2.92E+OO u WD         STJ       373202023 5/13/2015   Co-60        -6.66E-Ol    l.OSE+OO   2.82E+OO u WD         STJ       373202023 5/13/2015    Cr-51       7.03E+OO     8.53E+OO   2.76E+Ol u WD         STJ       373202023 5/13/2015   Cs-134        4.36E-OI    8.93E-01   2.96E+OO u WD         STJ       373202023 511312015   Cs-137       -8.94E-Ol    8.62E-01   2.58E+OO u WD         STJ       373202023 511312015    Fe-59        2.46E-Ol    l.62E+OO   5.43E+OO u WD         STJ       373202023 5/13/2015    1-131        l.72E+OO    l.32E+OO   4.43E+OO u WD         STJ       373202023 5/13/2015    K-40        8.39E+OO     l.27E+Ol   3.84E+Ol u WD         STJ       373202023 5/13/2015   La-140      -l.51E+OO     l.22E+OO   3.34E+OO u WD         STJ       373202023 5/13/2015   Mn-54         2.85E-Ol    8.58E-Ol   2.81E+OO u WD         STJ       373202023 5/13/2015   Nb-95        -l.47E-OI    8.22E-Ol   2.64E+OO u WD         STJ       373202023 5/13/2015   Ru-103        9.77E-02    8.44E-Ol   2.82E+OO u WD         STJ       373202023 5/13/2015   Ru-106       6.00E+OO     8.46E+OO   2.82E+OI u WD         STJ       373202023 5/13/2015   Sb-124       -3.33E-OI    l.75E+OO   5.54E+OO u WD         STJ       373202023 5/13/2015   Sb-125      -7.29E+OO     2.95E+OO   7.13E+OO u WD         STJ       373202023 5/13/2015    Se-75      *-7.12E-Ol    l.27E+OO   4.0lE+OO u WD         STJ       373202023 5/13/2015   Th-228       6.26E+OO     2.61E+OO   6.47E+OO u D-81

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS*
TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)    (pCi/L)   (pCi/L)
WD         STJ       373202023 5/13/2015   Zn-65        1.83E+OO     1.99E+OO   6.02E+OO  u WD         STJ       373202023 5/13/2015    Zr-95       2.27E-01     l.50E+OO   4.91E+OO  u WD         STJ       373202024 5/13/2015    I-131      -3.73E-02     2.51E-01   8.35E-01  u WD         LTW       373202025 5/13/2015   Ac-228       3.06E+OO     4.12E+OO   l.25E+Ol  u WD         LTW       373202025 5/13/2015  Ag-108m       7.38E-01     8.23E-01   2.74E+OO  u WD         LTW       373202025 5/13/2015  Ag-1 lOm     -8.89E-02     8.67E-01   2.90E+OO  u WD         LTW       373202025 5/13/2015   Ba-140       3.97E+OO     3.93E+OO   l.30E+Ol  u WD         LTW       373202025 5/13/2015    Be-7        5.84E+OO     7.82E+OO   2.59E+Ol  u WD         LTW       373202025 5/13/2015   BETA         2.00E+OO     1.09E+OO   3.06E+OO  u WD         LTW       373202025 5/13/2015   Ce-141       8.70E-01     1.62E+OO   4.64E+OO  u WD         LTW       373202025 5/13/2015   Ce-144      -1.ISE+Ol     7.54E+OO   l.93E+Ol  u WD         LTW       373202025 5/13/2015   Co-57       -6.73E-02     8.28E-01   2.68E+OO  u WD         LTW       373202025 5/13/2015   Co-58        5.36E-01     8.70E-01   2.63E+OO  u WD         LTW       373202025 5/13/2015   Co-60       -l.82E+OO     1.09E+OO   2.88E+OO  u WD         LTW       373202025 5/13/2015    Cr-51      -l.63E+OO     7.92E+OO   2.61E+Ol  u WD         LTW       373202025 5/13/2015   Cs-134      -5.30E-01   . 9.75E-01   3.00E+OO  u WD         LTW       373202025 5/13/2015   Cs-137       4.09E-01     9.44E-01   3.22E+OO  u WD         LTW       373202025 5/13/2015    Fe-59      -5.15E-01     1.93E+OO   5.73E+OO  u WD         LTW       373202025 5/13/2015    I-131      -2.46E-01     1.27E+OO   4.16E+OO  u WD         LTW       373202025 5/13/2015    K-40        7.63E+OO     l.39E+Ol   4.69E+Ol  u WD         LTW       373202025 5/13/2015   La-140       2.00E+OO     1.42E+OO   4.97E+OO  u WD         LTW       373202025 5/13/2015   Mn-54        7.74E-02     8.64E-01   2.87E+OO  u WD         LTW       373202025 5/13/2015   Nb-95        7.81E-Ol     8.92E-01   3.05E+OO  U WD         LTW       373202025 5/13/2015   Ru-103      -2.15E+OO     1.1 IE+OO  2.83E+OO  U WD         LTW       373202025 5/13/2015   Ru-106       2.70E+OO     7.31E+OO   2.50E+Ol  U WD         LTW       373202025 5/13/2015   Sb-124       O.OOE+OO     O.OOE+OO   6.75E+OO  U WD         LTW       373202025 5/13/2015   Sb-125      -l.33E+OO     2.86E+OO   7.86E+OO  U WD         LTW       373202025 5/13/2015    Se-75       8.56E-01     l.19E+OO   4.05E+OO  U WD         LTW       373202025 5/13/2015   Th-228       8.89E-01     2.57E+OO   6.49E+OO  U WD         LTW       373202025 5/13/2015    Zn-65       2.65E+OO     2.IOE+OO   6.40E+OO  u WD         LTW       373202025 5/13/2015    Zr-95       6.50E-01     1.55E+OO   5.24E+OO  u WD         LTW       373202026 5/13/2015    I-131        l .38E-01   2.63E-01   8.39E-01  u WD         STJ       378029001 6/24/2015     H-3       -4.42E+02     2.69E+02   9.40E+02  u WD         LTW       378029002 6/24/2015     H-3       -1.54E+02     2.76E+02   9.29E+02  u WD         STJ       374058023 5/27/2015   Ac-228       l.21E+Ol     5.35E+OO   l.70E+Ol  u WD         STJ       374058023 5/27/2015  Ag-108m      -5.03E-01     1.22E+OO   3.85E+OO  u WD         STJ       374058023 5/27/2015  Ag-llOm      -6.30E-01     1.22E+OO   3.90E+OO  u WD         STJ       374058023 5/27/2015   Ba-140       7.32E+OO     6.88E+OO   2.32E+Ol  u WD         STJ       374058023 5/27/2015    Be-7        l.95E+Ol     l.31E+Ol   4.41E+Ol  u WD         STJ       374058023 5/27/2015   BETA         6.62E-01     9.72E-01   2.96E+OO  u WD         STJ       374058023 5/27/2015   Ce-141      -2.48E+OO     2.80E+OO   8.12E+OO  u WD         STJ       374058023 5/27/2015   Ce-144       7.93E+OO     l.13E+Ol   3.3 IE+Ol u WD         STJ       374058023 5/27/2015   Co-57       -8.74E-01     1.29E+OO   3.96E+OO  u WD         STJ       374058023 5/27/2015   Co-58       -4.96E-01     1.45E+OO   4.66E+OO  u WD         STJ       374058023 5/27/2015    Co-60      -1.87E+OO     l.32E+OO   3.23E+OO  u WD         STJ       374058023 5/27/2015    Cr-51      -l.38E+Ol     1.32E+Ol   4.00E+Ol  u WD         STJ       374058023 5/27/2015   Cs-134      -1.92E+OO     1.52E+OO   4.18E+OO  u WD         STJ       374058023 5/27/2015   Cs-137        3.16E-01    l.38E+OO   4.72E+OO  u WD         STJ       374058023 5/27/2015    Fe-59       2.96E+OO     2.70E+OO   9.49E+OO  u WD         STJ       374058023 5/27/2015    I-131       -7.33E-01    2.21E+OO   7.08E+OO  u D-82

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                     CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN       DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WD         STJ       374058023  5/27/2015    K-40        l.IIE+Ol    2.00E+Ol    7.48&#xa3;+01 u WD         STJ       374058023  5/27/2015   La-140       3.47&#xa3;+00    2.30&#xa3;+00    8.50&#xa3;+00 u WD         STJ       374058023  5/27/2015   Mn-54       -1.65&#xa3;+00    l.50E+OO    3.43&#xa3;+00 u WD         STJ       374058023  5/27/2015   Nb-95       -3.97&#xa3;-02    2.0IE+OO    5.16&#xa3;+00 u WD         STJ       374058023  5/27/2015   Ru-103      -5.08&#xa3;-01    1.55&#xa3;+00    4.87E+OO u WD         STJ       374058023  5/27/2015   Ru-106       2.47&#xa3;+00    l.32E+Ol    4.49&#xa3;+01 u WD         STJ       374058023  5/27/2015   Sb-124       3.66&#xa3;+00    3.34&#xa3;+00    l.22E+Ol u WD         STJ       374058023  5/27/2015   Sb-125       4.00E-01    3.35&#xa3;+00    l.IOE+Ol u WD         STJ       374058023  5/27/2015    Se-75      -3.98&#xa3;-01    l.99E+OO    6.60&#xa3;+00 u WD         STJ       374058023  5/27/2015   Th-228       9.42&#xa3;+00    5.87&#xa3;+00    l.05E+Ol u WD         STJ       374058023  5/27/2015    Zn-65      -3.64&#xa3;+00    2.71E+OO    6.68&#xa3;+00 u WD         STJ       374058023  5/27/2015    Zr-95      -6.17&#xa3;-01    1.98&#xa3;+00    6.35&#xa3;+00 u WD         STJ       374058024  5/27/2015    1-131       7.95&#xa3;-01    3.06E-Ol    8.42&#xa3;-01 u WD         LTW       374058025  5/27/2015   Ac-228      2.75&#xa3;+00     7.49&#xa3;+00    2.55&#xa3;+01 u WD         LTW       374058025  5/27/2015  Ag-108m       7.12&#xa3;-01    l.70E+OO    5.71E+OO u WD         LTW       374058025  5/27/2015  Ag-llOm      2.80&#xa3;+00     l.9IE+OO    6.47&#xa3;+00 u WD         LTW       374058025  5/27/2015   Ba-140      -1.18&#xa3;+01    l.OOE+Ol    2.93&#xa3;+01 u WD         LTW       374058025  5/27/2015    Be-7       -1.47&#xa3;+01    1.82&#xa3;+01    4.94&#xa3;+01 u WD         LTW       374058025  5/27/2015   BETA         l.03E+OO    9.91E-Ol    2.96&#xa3;+00 u WD         LTW       374058025  5/27/2015   Ce-141      2.73&#xa3;+00     2.90E+OO    9.56&#xa3;+00 u WD         LTW       374058025  5/27/2015   Ce-144      -1.38&#xa3;+01    1.IOE+Ol    3.30&#xa3;+01 u WD         LTW       374058025  5/27/2015   Co-57        2.33&#xa3;-01    l.40E+OO    4.61E+OO u WD         LTW       374058025  5/27/2015   Co-58        7.61E-Ol    2.00E+OO    6.84&#xa3;+00 u WD         LTW       374058025  5/27/2015   Co-60        6.23&#xa3;-01    2.03&#xa3;+00    6.84&#xa3;+00 u WD        LTW        374058025  5/27/2015    Cr-51       1.88&#xa3;+01    1.59&#xa3;+01    5.37&#xa3;+01 u WD         LTW       374058025  5/2712015   Cs-134      7.06&#xa3;+00     2.64&#xa3;+00    8.16E+OO U WD        LTW        374058025  5/27/2015   Cs-137      -1.85&#xa3;+00    2.18&#xa3;+00    6.55E+OO U WD         LTW       374058025  5/27/2015    Fe-59      -3.43&#xa3;+00    4.17&#xa3;+00    l.25E+Ol U WD        LTW        374058025  5/27/2015    1-131       3.19&#xa3;+00    3.13&#xa3;+00    1.06&#xa3;+01 u WD         LTW       374058025  5/27/2015    K-40       -4.99&#xa3;+01    2.73&#xa3;+01    7.66E+Ol U WD         LTW       374058025  5/27/2015   La-140       2.53E+OO    3.13E+OO    l.IIE+Ol U WD         LTW       374058025  5/27/2015   Mn-54       -2.64&#xa3;+00    1.91&#xa3;+00    5.37&#xa3;+00 u WD         LTW       374058025  5/27/2015   Nb-95        3.30&#xa3;+00    2.19&#xa3;+00    6.24&#xa3;+00 u WD         LTW       374058025  5/27/2015   Ru-103       5.86&#xa3;-01    1.99&#xa3;+00    6.51E+OO U WD         LTW       374058025  5/27/2015   Ru-106       3.30&#xa3;+01    2.47&#xa3;+01    6.lOE+Ol U WD        LTW        374058025  5/27/2015   Sb-124      -1.25&#xa3;+01    5.58&#xa3;+00    l.03E+Ol U WD        LTW        374058025  5/27/2015   Sb-125       1.26&#xa3;-01    4.86E+OO    l.6IE+Ol U WD        LTW        374058025  5/27/2015    Se-75       2.23&#xa3;-01    2.38&#xa3;+00    7.69&#xa3;+00 u WD         LTW       374058025  5/27/2015   Th-228       1.57&#xa3;+00    3.77&#xa3;+00    l.19E+Ol U WD         LTW       374058025  5/27/2015   Zn-65        1.83&#xa3;+00    4.18E+OO    1.42&#xa3;+01 u WD         LTW       374058025  5/27/2015    Zr-95       3.76&#xa3;+00    3.64&#xa3;+00    l.23E+Ol U WD         LTW       374058026  5/27/2015    1-131      -6.05&#xa3;-01    2.50&#xa3;-01    9.15E-Ol u WD         STJ       374979023  6/10/2015   Ac-228       1.13&#xa3;+00    5.llE+OO    l.75E+Ol U WD         STJ       374979023  6/10/2015  Ag-108m       1.30&#xa3;+00    l.24E+OO    4.16&#xa3;+00 u WD         STJ       374979023  6/10/2015  Ag-llOm      -1.32&#xa3;-01    1.33&#xa3;+00    3.82E+OO U WD         STJ       374979023  6/10/2015   Ba-140      -1.22&#xa3;+01    7.33&#xa3;+00    1.86&#xa3;+01 u WD         STJ       374979023. 6/10/2015    Be-7        l.27E+Ol    1.13&#xa3;+01    3.78&#xa3;+01 u WD         STJ       374979023  6/10/2015   BETA         l.56E+OO    5.44&#xa3;-01    1.65&#xa3;+00 u WD         STJ       374979023  6/10/2015   Ce-141       7.40E-Ol    2.55&#xa3;+00    7.53&#xa3;+00 u WD         STJ       374979023  6/10/2015   Ce-144      -4.70&#xa3;-01    9.02&#xa3;+00    2.90&#xa3;+01 u D-83

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                        CONC     STD.DEV.       MDC      FLAGS TYPE'     STATION       LSN      DATE      NUCLIDE            (pCi/L)   (pCi/L)    (pCi/L)
WD         STJ       374979023 6/10/2015    Co-57        -8.05E-OI    1.16E+OO    3.51E+OO u WD         STJ       374979023 6/10/2015    Co-58        -6.00E-01    l.27E+OO    3.99E+OO u WD         STJ       374979023 6/10/2015    Co-60        -2. I IE-01  l.IOE+OO    3.53E+OO u WD         STJ*      374979023 6/10/2015     Cr-51       -5.27E+OO    1.20E+OI    3.87E+OI u WD         STJ       374979023 6/10/2015    Cs-134        3.23E-OI    l.25E+OO    4.20E+OO u WD         STJ       374979023 6/10/2015    Cs-137        2.81E+OO    2.75E+OO    4.57E+OO u WD         STJ       374979023 6/10/2015     Fe-59        2.21E-Ol    2.33E+OO    7.90E+OO u WD         STJ       374979023 6/10/2015     I-131        2.lOE+OO    2.38E+OO    8.03E+OO u WD         STJ       374979023 6/10/2015     K-40        -l.70E+Ol    l.63E+Ol    5.15E+OI u
(. WD         STJ       374979023 6/10/2015    La-140       -4.48E-02    2.03E+OO    6.86E+OO u WD         STJ       374979023 6/10/2015    Mn"54*        -l.78E-OI   l.23E+OO    3.97E+OO u WD         STJ       374979023 6/10/2015    Nb-95        -l.34E+OO    l.36E+OO    4.02E+OO U WD         STJ       374979023 6/10/2015    Ru-103        l.04E+OO    l.42E+OO    4.70E+OO U WD         STJ       374979023 6/10/2015    Ru-106       -l.07E+Ol    l.05E+Ol   -3.14E+OI U WD         STJ       374979023 6/10/2015    Sb-124        9.50E-Ol    2.44E+OO    8.38E+OO U WD         STJ       374979023 6/10/2015    Sb-125       -2.97E+OO    3.84E+OO    l.06E+Ol U WD         STJ       374979023 6110/2015     Se-75       -l.67E+OO    l.78E+OO    5.56E+OO U WD         STJ       374979023 6/10/2015    Th-228        9.00E-01
* 3.35E+OO    9.42E+OO U WD         STJ       374979023 6/10/2015    Zn-65         8.95E-Ol    2.31E+OO    8.0IE+OO U WD         STJ       374979023 6/10/2015     Zr-95        8.0IE-02    2.43E+OO    8.04E+OO U WD         STJ       374979024 6/10/2015     I-131        5.05E-Ol    2.86E-Ol    8.78E-Ol u WD         LTW       374979025 6/10/2015    Ac-228        9.39E+OO    6.63E+OO    2.24E+OI u WD         LTW       374979025 6/10/2015   Ag-108m       -1.llE+OO    l.07E+OO    3.18E+OO U WD        LTW        374979025 6/10/2015   Ag-llOm       -4.17E-02    l.IOE+OO    3.49E+OO U WD        LTW        374979025 6/10/2015    Ba-140        l.55E+Ol    6.57E+OO    2.14E+Ol U WD        LTW        374979025 6/10/2015     Be-7        -6.23E+OO    1.08E+OI    3.37E+OI U WD        LTW        374979025 6/10/2015    BETA          2.75E+OO    l.18E+OO    3.16E+OO U WD        LTW        374979025 6/10/2015    Ce-141         l.85E-Ol   2.25E+OO    6.90E+OO U WD         LTW       374979025 6/10/2015    Ce-144       -l.64E+OI    9.09E+OO    2.44E+Ol U WD         LTW       374979025 6/10/2015    Co-57         2.49E+OO    l.44E+OO    3.60E+OO U WD         LTW       374979025 6/10/2015    Co-58         3.06E-OI    9.94E-Ol    3.0IE+OO U WD         LTW       374979025 6/10/2015    Co-60         l.58E+OO    l.OIE+OO    3.73E+OO u WD         LTW       374979025 6/10/2015     Cr-51        l.72E+OI    l.42E+Ol    3.77E+Ol u WD         LTW       374979025 6/10/2015    Cs-134       -3.53E-Ol    1.03E+OO    3.31E+OO u WD         LTW       374979025 6/10/2015    Cs-137       -2.04E+OO    l.47E+OO    3.99E+OO U WD        LTW        374979025 611012015     Fe-59        l.72E+OO    2.69E+OO    9.15E+OO U WD        LTW        374979025 6/10/2015     I-131        l.14E+OO    l.88E+OO    6.39E+OO U WD         LTW       374979025 6/10/2015     K-40
* 4.32E+OO     1.64E+Ol    5.85E+Ol U WD        LTW        374979025 6/10/2015    La-140         l.31E-Ol   l.70E+OO    5.70E+OO U WD         LTW       374979025 6/10/2015    Mn-54         4.47E-Ol    l.16E+OO    3.95E+OO U WD        LTW        374979025 6/10/2015    Nb-95         2.49E-Ol    1.25E+OO    4.25E+OO U WD         LTW       374979025 6/10/2015    Ru-103       -l.23E+OO    1.26E+OO    3.69E+OO U WD         LTW       374979025 6/10/2015    Ru-106       -4.39E+OO    l.llE+Ol    3.45E+Ol U WD         LTW       374979025 6/10/2015    Sb-124        4.84E+OO    2.59E+OO    9.84E+OO U WD         LTW       374979025 6/10/2015    Sb-125        2.71E+OO    3.46E+OO    l.17E+Ol U WD         LTW       374979025 6/10/2015     Se-75        4.55E+OO    2.33E+OO    5.74E+OO U WD        LTW        374979025 611012015    Th-228        2.87E-Ol    3.14E+OO    8.61E+OO U WD        LTW        374979025 6/10/2015    Zn-65         9.62E-Ol    2.35E+OO    7.03E+OO U WD        LTW        374979025 6/10/2015     Zr-95       -l.60E+OO    l.89E+OO    5.72E+OO U WD        LTW        374979026 6/10/2015     I-131       -2.03E-OI    2.22E-OI    7.89E-Ol u D-84

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC    STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD         STJ       375803023 6/24/2015    Ac-228      -1.58E+OO   3.86E+OO    l.05E+Ol  u WD         STJ       375803023 6/24/2015  Ag-108m        l.27E+OO   7.12E-01    2.08E+OO  u WD         STJ       375803023 6/24/2015  Ag-llOm       -l.36E+OO   7.62E-01    2.09E+OO  u WD         STJ       375803023 6/24/2015    Ba-140      -2.58E-01   3.19E+OO    l.05E+Ol  u WD         STJ       375803023 6/24/2015     Be-7        4.64E+OO   5.72E+OO    1.91E+Ol  u WD         STJ       375803023 6/24/2015    BETA         8.98E-01   4.64E-Ol    1.44E+OO  u WD         STJ       375803023 6/24/2015    Ce-141      -2.06E+OO   1.49E+OO    3.81E+OO  u WD         STJ       375803023 6/24/2015    Ce-144      -1.52E+OO   4.43E+OO    l.39E+Ol  u WD         STJ       375803023 6/24/2015    Co-57         1.78E-01  5.89E-01    l.88E+OO  u WD         STJ       375803023 6/24/2015    Co-58        6.56E-01   l.OlE+OO    2.18E+OO  u WD         STJ       375803023 6/24/2015    Co-60        4.20E-01   6.47E-01    2.20E+OO  u WD         STJ       375803023 6/24/2015     Cr-51       7.82E-Ol   6.78E+OO    2.03E+Ol  u WD         STJ       375803023 6/24/2015    Cs-134       8.58E-01   7.61E-Ol    2.56E+OO  u WD         STJ       375803023 6/24/2015    Cs-137       l.65E+OO   8.33E-01    2.58E+OO  u WD         STJ       375803023 6/24/2015     Fe-59       l.63E+OO   2.58E+OO    4.97E+OO  u WD         STJ       375803023 6/24/2015     1-131      -9.93E-01   l.OSE+OO    3.30E+OO  u WD         STJ       375803023 6/24/2015     K-40        l.15E+Ol   l.46E+Ol    2.31E+Ol  u WD         STJ       375803023 6/24/2015    La-140      -4.93E-01   l.35E+OO    3.65E+OO  u WD         STJ       375803023 6/24/2015    Mn-54       -4.40E-01   8.06E-01    2.IOE+OO  u WD         STJ       375803023 6/24/2015    Nb-95        2.IOE+OO   8.41E-01    2.52E+OO  u WD         STJ       375803023 6/24/2015   'Ru-103       l.23E+OO   4.86E-01    2.17E+OO  u WD         STJ       375803023 6/24/2015    Ru-106      -3.13E+OO   6.31E+OO    2.0lE+Ol  u WD         STJ       375803023 6/24/2015    Sb-124      -1.86E+OO   l.82E+OO    5.39E+OO  u WD         STJ       375803023 6/24/2015    Sb-125      -8.76E-01   2.14E+OO    6.lOE+OO  u WD         STJ       375803023 6/24/2015     Se-75       7.79E-01   9.48E-01    3.IOE+OO  u WD         STJ       375803023 6/24/2015    Th-228       l.09E+OO   l.95E+OO    4.91E+OO  u WD         STJ       375803023 6/24/2015    Zn-65       -2,l.lE+OO  1.55E+OO    4.44E+OO  u WD         STJ       375803023 6/24/2015     Zr-95      -4.45E-01   1.13E+OO    _3.72E+OO u WD         STJ       375803024 6/24/2015     1-131       4.68E-01   2.72E-Ol    7.77E-01  u WD         LTW       375803025 6/24/2015    Ac-228       l.21E+OO   3.84E+OO    1.0SE+Ol  u WD         LTW       375803025 6/24/2015  Ag-108m       -1.0SE+OO   7.07E-01    l.99E+OO  u WD         LTW       375803025 6/24/2015  Ag*llOm     . -5.0SE-01   7.15E-01    2.24E+OO  u WD         LTW       375803025 6/24/2015    Ba-140       l.15E+OO   3.16E+OO    l.06E+Ol  u WD         LTW       375803025 6/24/2015     Be-7       -1.44E+Ol   8.30E+OO    1.89E+Ol  u WD         LTW       375803025 6/24/2015    BETA         l.23E+OO   l.02E+OO    3.02E+OO  u WD         LTW       375803025 6/24/2015    Ce-141       l.68E+OO   l.91E+OO    3.45E+OO  u WD         LTW       375803025 6/24/2015    Ce-144      -2.68E-01   4.SOE+OO    1.55E+Ol  u WD         LTW       375803025 6/24/2015    Co-57        1.46E-01   5.90E-01    l.93E+OO  u WD         LTW       375803025 6/24/2015    Co-58       -4.24E-01   7.30E-01    2.38E+OO  u WD         LTW       375803025 6/24/2015    Co-60       -6.16E-01   8.30E-01    2.62E+OO  u WD         LTW       375803025 6/24/2015     Cr-51      -4.91E+OO   8.50E+OO    2.23E+Ol  u WD         LTW       375803025 6/24/2015    Cs-134       5.SlE-01   8.16E-01    2.67E+OO  u WD         LTW       375803025 6/24/2015    Cs-137       7.16E-01   7.75E-01    2.57E+OO  u WD         LTW       375803025 6/24/2015     Fe-59      -6.54E-01   l.48E+OO    4.69E+OO  u WD         LTW       375803025 6/24/2015     I-131       l.73E+OO   l.20E+OO    3.83E+OO  u WD         LTW       375803025 6/24/2015     K-40       -1.52E+Ol   l.68E+Ol    3,57E+Ol  U WD         LTW       375803025 6/24/2015    La-140      -6.32E-01   1.19E+OO    3.75E+OO  U WD         LTW       375803025 6/24/2015    Mn-54       -3.14E-01   7.41E-01    2.43E+OO  U.
WD         LTW       375803025 6/24/2015    Nb-95        5.0lE-01   8.78E-01    2.40E+OO  U WD         LTW       375803025 6/24/2015    Ru-103       l.35E+OO   8.SlE-01    2.31E+OO  U D-85

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION        LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WD         LTW        375803025 6/24/2015    Ru-106      -1.13E+Ol    7.13E+OO    2.03E+Ol u WD         LTW        375803025 6/24/2015     Sb-124     -7.35E-01    2.09E+OO    6.38E+OO u WD         LTW        375803025 6/24/2015     Sb-125      l.62E+OO    2.0lE+OO    6.50E+OO u WD         LTW        375803025 6/24/2015      Se-75     -8.28E-01    9.89E-01    3.15E+OO u WD         LTW        375803025 6/24/2015     Th-228       5.77E-01   2.37E+OO    5.24E+OO u WD         LTW        375803025 6/24/2015     Zn-65      -3.28E-01    l.64E+OO    5.31E+OO u WD         LTW        375803025 6/24/2015      Zr-95      l.40E+OO    l.37E+OO    4.51E+OO u WD         LTW        375803026 6/24/2015      I-131      3.89E-01    2.63E-01    7.52E-01 u WD         STJ        376892023  7/8/2015     Ac-228     -6.00E+OO    8.65E+OO    2.69E+Ol u WD         STJ        376892023  7/8/2015   Ag-108m      -l.85E+OO    1.64E+OO    4.91E+OO u WD         STJ        376892023  7/8/2015   Ag-llOm      -1.47E+OO    1.90E+OO    5.74E+OO u WD         STJ        376892023  7/8/2015     Ba-140      2.04E+Ol    9.84E+OO    3.25E+Ol u WD         STJ        376892023  7/8/2015      Be-7      -3.97E+Ol    1.95E+Ol    4.91E+Ol u WD         STJ        376892023  7/8/2015     BETA        2.45E+OO    1.18E+OO    3.34E+OO u WD         STJ        376892023  7/8/2015     Ce-141      5.20E+OO    3.60E+OO    l.03E+Ol u WD         STJ        376892023  7/8/2015     Ce-144      9.15E+OO    1.09E+Ol    3.59E+Ol u WD         STJ        376892023  7/8/2015     Co-57       7.75E-01    l.37E+OO    4.56E+OO u WD         STJ        376892023  7/8/2015     Co-58      -3.19E+OO    2.38E+OO    5.76E+OO u WD         STJ        376892023  7/8/2015     Co-60      -8.50&#xa3;-01    2.59E+OO. 7.13E+OO u WD         STJ        376892023  7/8/2015      Cr-51      2.29E+OO    2.00E+Ol    5.81E+Ol u WD         STJ        376892023  7/8/2015     Cs-134     -2.94E+OO    2.07E+OO    5.78E+OO u WD         STJ        376892023  7/8/2015     Cs-137       9.lOE-01   2.30E+OO    6.65E+OO u WD         STJ        376892023  7/8/2015      Fe-59      3.45E+OO    3.66E+OO    l.28E+Ol u WD         STJ        376892023  7/8/2015      I-131     -2.56E+OO    3.22E+OO    1.0lE+Ol u WD         STJ        376892023  7/8/2015      K-40       1.91E+Ol    2.78E+Ol    4.51E+Ol u WD         STJ        376892023  7/8/2015     La-140      4.67E+OO    3.05E+OO    l.12E+Ol u WD         STJ        376892023  7/8/2015     Mn-54      -1.04E+OO    1.77E+OO    5.49E+OO u WD         STJ        376892023  7/8/2015     Nb-95       2.34E+OO    2.06E+OO    6.96E+OO u WD         STJ        376892023  7/8/2015     Ru-103      l.69E+OO    2.02E+OO    6.84E+OO u WD         STJ        376892023  7/8/2015     Ru-106     -4.09E+OO    1.94E+Ol    6.05E+Ol u WD         STJ        376892023  7/8/2015     Sb-124      l.12E+OO    4.72E+OO    1.61E+Ol u WD         STJ        376892023  7/8/2015     Sb-125     -3.42E+OO    4.85E+OO    l.52E+Ol u WD         STJ        376892023  7/8/2015      Se-75       3.37E-01   2.45E+OO    7.62E+OO u WD         STJ        376892023  7/8/2015     Th-228     -5.60E+OO    4.25E+OO    l.17E+Ol u WD         STJ        376892023  7/8/2015     Zn-65       8.47E+OO    4.50E+OO    1.55E+Ol u WD         STJ        376892023  7/8/2015      Zr-95      1.24E+OO    3.31E+OO    1.lOE+Ol u WD         STJ        376892024  7/8/2015      I-131     -2.18&#xa3;-01     1.90E-01   6.94E-01 u WD         LTW        376892025  7/8/2015     Ac-228      6.39E+OO    5.53E+OO    l.95E+Ol u WD         LTW        376892025  7/8/2015    Ag-108m      8.49E-01    1.0lE+OO    3.46E+OO u WD         LTW      . 376892025  7/8/2015    Ag-llOm     -3.29E+OO    1.49E+OO    3.42E+OO u WD         LTW        376892025  7/8/2015     Ba-140     -7.53E+OO    7.69E+OO    2.28E+Ol u WD         LTW        376892025  7/8/2015      Be-7      -1.27E+OO    1.12E+Ol    3.60E+Ol u WD         LTW        376892025  7/8/2015     BETA        1.49E+OO    1.18E+OO    3.57E+OO u WD         LTW        376892025  7/8/2015     Ce-141      5.38E+OO    3.66E+OO    7.33E+OO u WD         LTW        376892025  7/8/2015     Ce-144     -l.61E+Ol    9.58E+OO    2.64E+Ol u WD         LTW        376892025  7/8/2015     Co-57       -7.19E-01   1.12E+OO    3.62E+OO u WD         LTW        376892025  7/8/2015     Co-58       1.lOE+OO    1.47E+OO    4.92E+OO U WD         LTW        376892025  7/8/2015     Co-60      -5.20E-01    1.0lE+OO    3.06E+OO U WD         LTW        376892025  7/8/2015      Cr-51     -1.28E+Ol    1.36E+Ol    4.07E+Ol U WD         LTW        376892025  7/8/2015     Cs-134      -2.30E-01   l.55E+OO    4.27E+OO U D-86

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.        MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)     (pCi/L)    (pCi/L)
WD         LTW       376892025  7/8/2015    Cs-137      -l.56E+OO     1.48E+OO    4.21E+OO u WD         LTW       376892025  7/8/2015     Fe-59       l.23E+OO     2.99E+OO    l.02E+Ol u WD         LTW       376892025  7/8/2015     I-131      -5.25E+OO     2.75E+OO    7.55E+OO u WD         LTW       376892025  7/8/2015     K-40       -l.58E+Ol     1.86E+Ol    6.24E+Ol u WD         LTW       376892025  7/8/2015    La-140       7.22E-01     2.40E+OO    7.98E+OO u WD         LTW       376892025  7/8/2015    Mn-54       -1.77E+OO     l.34E+OO    3.65E+OO u WD        *LTW       376892025  7/8/2015    Nb-95        4.34E-01     l.34E+OO
* 4.43E+OO u WD         LTW       376892025  7/8/2015    Ru-103       7.14E-01     l.35E+OO    4.05E+OO u WD         LTW       376892025  7/8/2015    Ru-106      -4.21E+OO     1.21E+Ol    3.89E+Ol u WD         LTW       376892025  7/8/2015    Sb-124      -5.18E+OO     3.03E+OO    6.42E+OO u WD         LTW       376892025  7/8/2015    Sb-125       5.25E+OO     3.22E+OO    l.09E+Ol u WD         LTW       376892025  7/8/2015     Se-75       1.59E+OO     2.07E+OO    6.03E+OO u WD         LTW       376892025  7/8/2015    Th-228       2.53E-03     5.63E+OO    8.92E+OO u WD         LTW       376892025  7/8/2015     Zn-65      -9.46E+OO     3.89E+OO    8.04E+OO u WD         LTW       376892025  7/8/2015     Zr-95       1.69E+OO     2.35E+OO    7.90E+OO u WD         LTW       376892026  7/8/2015     I-131       6.05E-01     2.93E-01    8.lOE-01 u WD         STJ       377895023 7/22/2015    Ac-228      -3.50E+OO     6.50E+OO    2.17E+Ol u WD         STJ       377895023 7/22/2015   Ag-108m      -3.74E-01     1.29E+OO    4.23E+OO u WD         STJ       377895023 7/22/2015   Ag-llOm       8.72E-01     1.51E+OO    5.07E+OO u WD         STJ       377895023 7/22/2015    Ba-140       1.02E+Ol     8.16E+OO    2.80E+Ol u WD         STJ       377895023 7/22/2015     Be-7        l.36E+Ol     l.37E+Ol    4.69E+Ol u WD         STJ       377895023 7/22/2015    BETA         3.13E+OO     1.29E+OO    3.32E+OO u WD         STJ       377895023 7/22/2015    Ce-141       4.92E+OO     3.36E+OO    l.05E+Ol u WD         STJ       377895023 7/22/2015    Ce-144      -l.35E+Ol     1.lOE+Ol    3.41E+Ol u WD         STJ       377895023 7/22/2015    Co-57       -1.73E+OO     1.42E+OO    4.41E+OO u WD         STJ       377895023 7/22/2015    Co-58       -3.70E-01     1.50E+OO    4.93E+OO u WD         STJ       377895023 7/22/2015    Co-60       -7.46E-01     l.54E+OO    4.86E+OO u WD         STJ       377895023 7/22/2015     Cr-51       9.32E+OO     1.57E+Ol    5.19E+Ol u WD.        STJ       377895023 7/22/2015    Cs-134       l.55E+OO     l.64E+OO    5.50E+OO u WD         STJ       377895023 7/22/2015    Cs-137      -4.12E+OO     1.92E+OO    4.21E+OO u WD         STJ       377895023 7/22/2015     Fe-59       4.75E+OO     3.98E+OO    l.24E+Ol u WD         STJ       377895023 7/22/2015     I-131       2.92E+OO     3.37E+OO    1.llE+Ol u WD         STJ       377895023 7/22/2015     K-40        l.18E-01     1.93E+Ol    6.98E+Ol u WD         STJ       377895023 7/22/2015    La-140      -3.90E+OO     2.67E+OO    6.47E+OO u WD         STJ       377895023 7/22/2015    Mn-54        2.76E-01     l.39E+OO    4.73E+OO u WD         STJ       377895023 7/22/2015    Nb-95        3.86E+OO     1.86E+OO    6.16E+OO u WD         STJ       377895023 7/22/2015    Ru-103      -2.53E+oo     2.llE+OO    5.20E+OO u WD         STJ       377895023 7/22/2015    Ru-106      -7.85E+OO     1.29E+Ol    3.98E+Ol u WD         STJ       377895023 7/22/2015    Sb-124       l.74E+OO     3.56E+OO    l.24E+Ol u WD         STJ       377895023 7/22/2015    Sb-125      -4.53E+OO     4.20E+OO    l.27E+Ol u WD         STJ       377895023 7/22/2015     Se-75       l.84E+OO     2.12E+OO    7.08E+OO u WD         STJ       377895023 7/22/2015    Th-228       2.44E+OO     3.87E+OO    l.19E+Ol u WD         STJ       377895023 7/22/2015    Zn-65       -2.66E+OO     3.41E+OO    l.OlE+Ol u WD         STJ       377895023 7/22/2015     Zr-95       l.98E-01     2.81E+OO    9.llE+OO u WD         STJ       377895024 7/22/2015     I-131      -3.14E-01     l.96E-01    7.32E-01 u WD         LTW       377895025 7/22/2015    Ac-228       6.51E+OO     6.15E+OO    l.97E+Ol u WD         LTW       377895025 7/22/2015   Ag-108m      -9.17E-02     1.1 lE+OO   3.66E+OO u WD         LTW       377895025 7/22/2015   Ag-llOm      -7.03E-01
* 1.13E+OO    3.39E+OO u WD         LTW       377895025 7/22/2015    Ba-140      -7.22E+OO     7.43E+OO    2.26E+Ol u WD         LTW       377895025 7/22/2015     Be-7        l.22E+Ol     1.06E+Ol    3.66E+Ol u D-87

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN       DATE      NUCLXDE           (pCi/L)   (pCi/L)    (pCi/L)
WD         LTW       377895025  7/22/2015     BETA        2.30E+OO    1.23E+OO    3.56E+OO u WD         LTW       377895025  7/22/2015     Ce-141     -3.54E+OO    2.33E+OO    6.76E+OO u WD         LTW       377895025  7/22/2015     Ce-144      4.54E+OO    8.35E+OO    2.72E+Ol u WD         LTW       377895025  7/22/2015     Co-57      -1.30E+OO    l.08E+OO    3.06E+OO u WD         LTW       377895025- 7/22/2015     Co-58        3.61E-01   l.llE+OO    3.82E+OO u WD         LTW       377895025  7/22/2015     Co-60        7.36E-01   l.19E+OO    4.22E+OO u WD         LTW       377895025  7/22/2015     Cr-51      -6.32E+OO    l.09E+Ol    3.54E+Ol u WD         LTW       377895025  7/22/2015     Cs-134     -l.19E+OO    1.38E+OO    4.19E+OO u WD         LTW       377895025  7/22/2015     Cs-137     -1.07E+OO    1.30E+OO    3.78E+OO u WD         LTW       377895025  7/22/2015     Fe-59       2.28E+OO    3.14E+OO    l.lOE+Ol u WD         LTW       377895025  7/22/2015      I-131       8.13E-01   2.42E+OO    8.27E+OO u WD         LTW       377895025  7/22/2015      K-40      -1.40E+OO    l.82E+Ol    5.81E+Ol u WD         LTW       377895025  7/22/2015     La-140      -7.74E-01   2.62E+OO    7.87E+OO u WD         LTW       377895025  7/22/2015    *Mn-54        5.62E-01   l.17E+OO    4.04E+OO u WD         LTW       377895025  7/22/2015     Nb-95      -l.43E+OO    l.35E+OO    4.16E+OO u WD         LTW       377895025  7/22/2015    Ru-103        9.48E-01   l.32E+OO    4.50E+OO u WD         LTW       377895025  7/22/2015    Ru-106      -l.08E+Ol    l.20E+Ol    3.51E+Ol u WD         LTW       377895025  7/22/2015     Sb-124     -5.97E+OO    3.52E+OO    7.65E+OO u WD         LTW       377895025  7/22/2015     Sb-125       8.16E-01   3.36E+OO    l.14E+Ol u WD         LTW       377895025  7/22/2015     Se-75        3.91E-01   l.66E+OO    5.38E+OO u WD         LTW       377895025  7/22/2015     Th-228      2.26E+OO    4.20E+OO    8.99E+OO u WD         LTW       377895025  7/22/2015     Zn~65      -4.15E+OO    2.58E+OO    5.92E+OO u WD         LTW       377895025  7/22/2015      Zr-95     -3.71E+OO    2.26E+OO    5.84E+OO u WD         LTW       377895026  7/22/2015      I-131      -2.40E-01    l.96E-01   7.18E-01 u WD         STJ       378883023   8/5/2015    Ac-228       3.32E+OO    7.38E+OO    l.76E+Ol u WD         STJ       378883023   8/5/2015   Ag-108m       -2.32E-01   l.24E+OO    4.06E+OO u WD         STJ       378883023   8/5/2015   Ag-llOm      -1.22E+OO    l.60E+OO    4.81E+OO u WD         STJ       378883023   8/5/2015     Ba-140    . 3.09E+OO    6.70E+OO    2.25E+Ol u WD         STJ       378883023   8/5/2015      Be-7       6.99E+OO    l.20E+Ol    3.98E+Ol u WD         STJ       378883023   8/5/2015     BETA        2.68E+OO    9.70E-01    2.86E+OO u WD         STJ       378883023   8/5/2015     Ce-141      3.99E+OO    3.lOE+OO    9.47E+OO u WD         STJ       378883023   8/5/2015     Ce-144      9.46E+OO    l.12E+Ol    3.60E+Ol u WD         STJ       378883023   8/5/2015     Co-57       -4.89E-02   1.35E+OO    4.44E+OO u WD         STJ       378883023   8/5/2015     Co-58      -l.03E+OO    l.53E+OO    4.81E+OO u WD         STJ       378883023   8/5/2015     Co-60       3.51E+OO    l.84E+OO    5.66E+OO u WD         STJ       378883023   8/5/2015     Cr-51        l.73E+Ol   l.80E+Ol    4.36E+Ol u WD         STJ      *318883023   8/5/2015     Cs-134      2.13E+OO    l.55E+OO    5.49E+OO u WD         STJ       378883023   8/5/2015     Cs-137      2.16E+OO    l.74E+OO    ~.88E+OO u WD         STJ       378883023   8/5/2015      Fe-59       4.99E-01   3.48E+OO    l.02E+Ol u WD         STJ       378883023   8/5/2015      I-131       l.83E+OO   2.29E+OO    7.82E+OO u WD         STJ       378883023   8/5/2015      K-40       5.03E+Ol    2.17E+Ol    7.33E+Ol u WD         STJ       378883023   8/5/2015     La-140     -2.23E+OO    l.76E+OO    4.38E+OO u WD         STJ       378883023   8/5/2015     Mn-54      -l.43E+OO    l.49E+OO    4.51E+OO u WD         STJ       378883023   8/5/2015     Nb-95       2.94E+OO    2.19E+OO    5.07E+OO u WD         STJ       378883023   8/5/2015     Ru-103       l.98E+OO   l.65E+OO    5.59E+OO u WD         STJ       378883023   8/5/2015     Ru-106       l.OlE+Ol   l.49E+Ol    4.43E+Ol u WD         STJ       378883023   8/5/2015     Sb-124     -4.34E+OO    3.62E+OO    9.67E+OO u WD         STJ       378883023   8/5/2015     Sb-125      4.86E+OO    4.02E+OO    1.37E+Ol u WD         STJ       378883023   8/5/2015      Se-75     -l.70E+OO    2.44E+OO    7.45E+OO u WD         STJ       378883023   8/5/2015     Th-228      2.30E+OO    4.88E+OO    l.23E+Ol u D-88

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD         STJ       378883023  8/5/2015     Zn-65      -3.S2E+OO    3.54E+OO    l.03E+Ol u WD         STJ       378883023  8/5/2015     Zr-95       6.48E+OO    3.12E+OO    l.OIE+Ol u WD         STJ       378883024  8/5/2015     1-131       -l.85E-01   2.26E-01    7.93E-01 u WD         LTW       378883025  8/5/2015    Ac-228      -8.38E+OO    5.84E+OO    l.62E+Ol u WD         LTW       378883025  8/5/2015   Ag-108m      -2.50E+OO    l.48E+OO    3.19E+OO u WD         LTW       378883025  8/5/2015   Ag-llOm       l.91E+OO    1.19E+OO    4.14E+OO u WD         LTW       378883025  8/5/2015    Ba-140      -4.53E+OO    6.47E+OO    l.95E+Ol u WD         LTW       378883025  8/5/2015     Be-7        5.44E+OO    1.19E+Ol    3.94E+Ol u WD         LTW       378883025  8/5/2015    BETA         l.61E+OO    1.13E+OO    3.51E+OO u WD         LTW       378883025  8/5/2015    Ce-141       3.84E+OO    2.38E+OO    7.61E+OO u WD         LTW       378883025  8/5/2015    Ce-144      -1.17E+Ol    9.97E+OO    2.95E+Ol u WD         LTW       378883025  8/5/2015    Co-57       -2.85E-01    1.24E+OO    3.99E+OO u WD         LTW       378883025  8/5/2015    Co-58       -1.35E+OO    l.41E+OO    4.18E+OO u WD        LTW        378883025  8/5/2015    Co-60       -8.86E-01    l.32E+OO    3.99E+OO u WD        LTW        378883025  8/5/2015     Cr-51      -4.93E+OO    l.20E+Ol    3.88E+Ol u WD        LTW        378883025  8/5/2015    Cs-134       1.95E+OO    1.43E+OO    5.02E+OO u WD        LTW        378883025  8/5/2015    Cs-137       2.17E-01    l.41E+OO    4.19E+OO u
  .WD       LTW        378883025  8/5/2015     Fe-59     .-l.59E+OO    2.89E+OO    7.26E+OO u WD        LTW        378883025  8/5/2015     1-131      -2.54E-01    2.0IE+OO    6.57E+OO u WD        LTW        378883025  8/5/2015     K-40       -1.61E+Ol    l.76E+Ol    5.64E+Ol u WD        LTW        378883025  8/5/2015    La-140       9.97E-01    2.lOE+OO    7.23E+OO u WD        LTW        378883025  8/5/2015    Mn-54       -1.16E+OO    l.36E+OO    4.09E+OO u WD        LTW        378883025  8/5/2015    Nb-95       -5.98E-01    l.26E+OO    3.37E+OO u WD        LTW        378883025  8/5/2015    Ru-103      -2.lOE+OO    l.58E+OO    4.42E+OO u WD        LTW        378883025  8/5/2015    Ru-106       7.61E+OO    l.13E+Ol    3.95E+Ol u WD        LTW        378883025  8/5/2015    Sb-124       2.03E-01    3.18E+OO    1.05E+Ol u WD        LTW        378883025  8/5/2015    Sb-125       9.33E-01    3.79E+OO    1.25E+Ol u WD        LTW        378883025  8/5/2015     Se-75       6.40E-01    l.82E+OO    6.19E+OO u WD        LTW        378883025  8/5/2015    Th-228       9.41E+OO    4.00E+OO    9.96E+OO u WD        LTW        378883025  8/5/2015    Zn-65       -3.71E+OO    3.46E+OO    7.66E+OO u WD        LTW        378883025  8/5/2015     Zr-95       4.55E-01    2.03E+OO    6.87E+OO u WD        LTW        378883026  8/5/2015     1-131      -l.43E-01    2.37E-01    8.lOE-01 u WD         STJ       379768023 8/19/2015    Ac-228      -3.31E+OO    3.89E+OO    8.86E+OO u WD        STJ        379768023 8119/2015   Ag-108m      -5:97E-01    5.81E-01    l.82E+OO u WD        STJ        379768023 8/19/2015   Ag-llOm       7.40E-03    5.99E-01    1.94E+OO u WD        STJ        379768023 8/19/2015    Ba-140       6.51E+OO    3.76E+OO    1.0IE+Ol u WD         STJ       379768023 8/19/2015     Be-7        4.68E+OO    5.37E+OO    l.77E+Ol u WD        STJ        379768023 8/19/2015    BETA         1.69E+OO    l.llE+OO    3.21E+OO u WD        STJ        379768023 8/19/2015    Ce-141       3.91E+OO    1.59E+OO    3.95E+OO u WD        STJ        379768023 8/19/2015    Ce-144      -5.76E+OO    4.67E+OO    1.39E+Ol u WD        STJ        379768023 8/19/2015    Co-57       -2.14E-01    5.58E-01    l.82E+OO u WD        STJ        379768023 8/19/2015    Co-58       -2.22E-01    5.83E-01    l.92E+OO u WD        STJ        379768023 8/19/2015    Co-60       -3.61E-01    6.19E-01    1.94E+OO u WD        STJ        379768023 8/19/2015    Cr-51        1.17E+Ol    5.41E+OO    2.09E+Ol u WD        STJ        379768023 8/19/2015    Cs-134      -9.40E-01    7.07E-01    2.16E+OO u WD        STJ        379768023 8/19/2015    Cs-137       2.67E-01    6.39E-01    2.09E+OO u WD        STJ        379768023 8/19/2015    Fe-59       -6.73E-01    1.23E+OO    3.93E+OO u WD        STJ        379768023 8/19/2015     1-131        l.lOE-01   1.lOE+OO    3.67E+OO u WD        STJ        379768023 8/19/2015     K-40        2.81E+Ol    l.33E+Ol    l.92E+Ol UI WD        STJ        379768023 8/19/2015    La-140      -5.21E-02    9.lOE-01    3.03E+OO u D-89

Donald C. Cook Nuclear Plant              Annual Radiological Environmentai Operating Report 2015 SAMPLE                                END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN         DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD          STJ      379768023    8/19/2015    Mn-54        -4.37E-01   7.41E-01    1.94E+OO u WD          STJ      379768023    8/19/2015    Nb-95        9.34E-01    8.05E-01    2.20E+OO u WD          STJ      379768023    8/19/2015    Ru-103       -2.97E-01   7.34E-01    2.05E+OO u WD          STJ      379768023    8/19/2015    Ru-106       l.67E+OO    5.58E+OO    1.83E+Ol u WD          STJ      379768023    8/19/2015    Sb-124      -l.89E+OO    1.52E+OO    4.54E+OO u WD          STJ      379768023    8/19/2015    Sb-125        1.14E-01   1.65E+OO    5.47E+OO u WD          STJ      379768023    8/19/2015     Se-75       4.89E-01    9.0lE-01    2.89E+OO u WD          STJ      379768023    8/19/2015    Th-228       5.53E+OO    1.99E+OO    3.86E+OO WD          STJ      379768023    8/19/2015    Zn-65        2.91E+OO    l.36E+OO    3.48E+OO u WD          STJ      379768023    8/19/2015     Zr-95       l.32E+OO    l.17E+OO    3.75E+OO u WD          STJ      379768024    8/19/2015     I-131       -4.61E-02   2.08E-01    6.98E-01 u WD          LTW      379768025    8/19/2015    Ac-228      -7.50E-02    2.98E+OO    7.42E+OO u WD          LTW      379768025    8/19/2015   Ag-108m      -4.47E-01    4.72E-01    1.46E+OO u WD          LTW      379768025    8/19/2015   Ag-llOm       4.81E-01    4.94E-01    L67E+OO  u WD          LTW      379768025    8/19/2015    Ba-140      -6.42E+OO    3.78E+OO    8.42E+OO u WD          LTW      379768025    8/19/2015     Be-7        6.18E+OO    4.72E+OO    1.52E+Ol u WD          LTW      379768025  . 8/19/2015    BETA         2.29E+OO    9.98E-01    2.59E+OO u WD          LTW      379768025    8/19/2015    Ce-141       L60E+OO     1.55E+OO    3.07E+OO u WD          LTW      379768025    8/19/2015    Ce-144      -4.47E+OO    3.83E+OO    l.17E+Ol u WD          LTW      379768025    8/19/2015    Co-57        3.58E-01    4.83E-01    l.S6E+OO u WD          LTW      379768025    8/19/2015    Co-58        3.33E-01    5.14E-01    l.72E+OO u WD
* LTW      379768025    8/19/2015    Co-60         l.66E-01   9.31E-01    l.88E+OO u WD          LTW      379768025    8/19/2015     Cr-51       l.02E+Ol    5.31E+OO    1.65E+Ol U WD          LTW      379768025    8/19/2015    Cs-134       5.72E-01    6.20E-01    l.96E+OO U WD          LTW      379768025    8/19/2015    Cs-137      -l.70E-01    5.33E-01    1.77E+OO U WD          LTW      379768025    8/19/2015     Fe-59      -7.49E-01    l.06E+OO    3.26E+OO U WD          LTW    . 379768025    8/19/2015     I-131      -l.66E+OO    l.03E+OO    3.00E+OO U WD          LTW      379768025    8/19/2015     K-40        3.56E+Ol    l.06E+Ol    l.46E+Ol WD          LTW      379768025    8/19/2015    La-140       l.72E+OO    1.22E+OO    3.05E+OO u WD          LTW      379768025    8/19/2015    Mn-54        4.15E-02    5.1 lE-01   1.69E+OO u WD          LTW      379768025'   8/19/2015    Nb-95        5.26E-01    5.0lE-01    1.67E+OO u WD          LTW      379768025    8/19/2015    Ru-103      -l.07E+OO    6.77E-01    1.65E+OO u WD          LTW      379768025    8/19/2015    Ru-106      -7.41E+OO    4.76E+OO    1.42E+Ol u WD          LTW      379768025    8/19/2015    Sb-124      -6.26E-01    l.34E+OO    4.26E+OO u WD          LTW      379768025    8/19/2015    Sb-125       9.04E-01    l.44E+OO    4.72E+OO u WD          LTW      379768025    8/19/2015     Se-75      -5.54E-01    7.65E-01    2.31E+OO u WD          LTW      379768025    8/19/2015    Th-228       3.0lE+OO    l.98E+OO
* 3.llE+OO u WD          LTW      379768025    8/19/2015    Zn-65       -2.89E-01    l.08E+OO    2.95E+OO u WD          LTW      379768025    8/19/2015     Zr-95      -5.95E-01    9.81E-01    3.17E+OO u WD          LTW      379768026    8/19/2015     I-131       2.24E-03    2.lOE-01    6.90E-01 u WD          STJ      385416001    9/30/2015      H-3        4.26E+02    3.90E+02    1.21E+03 u WD          LTW      385416002    9/30/2015      H-3        l.73E+02    3.77E+02    1.21E+03 u WD          STJ      380656023     9/2/2015    Ac-228      -6.71E+OO    6.27E+OO    l.95E+Ol u WD          STJ      380656023     9/2/2015   Ag-108m       l.06E+OO    1.59E+OO    4.75E+OO u WD          STJ      380656023     9/2/2015   Ag-llOm      -l.90E+OO    1.45E+OO    3.95E+OO u WD          STJ      380656023     9/2/2015    Ba-140       6.48E+OO    7.29E+OO    2.48E+Ol u WD          STJ      380656023    9/2/2015      Be-7        8.68E+OO    l.27E+Ol    4.32E+Ol u WD          STJ      380656023    9/2/2015     BETA         5.24E-01    9.20E-01    2.87E+OO u WD          STJ      380656023     9/2/2015    Ce-141       7.94E+OO    3.46E+OO    1.04E+Ol u WD          STJ      380656023     9/2/2015    Ce-144       7.70E+OO    l.08E+Ol    3.59E+Ol u D-90

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC      STD.DEV.      MDC       FLAGS TYPE     STATION        LSN     DATE      NUCLIDE           (pCi/L)    (pCi/L)   (pCi/L)
WD         STJ        380656023 9/2/2015    Co-57       -3.40E+OO     l.58E+OO   4.08E+OO u WD         STJ        380656023 9/2/2015    Co-58        6.15E-Ol     l.44E+OO   4.97E+OO u WD         STJ        380656023 9/2/2015    Co-60        l.87E+OO     l.65E+OO   5.81E+OO u WD         STJ        380656023 9/2/2015     Cr-51      -3.37E+OO     l.42E+Ol   4.71E+Ol u WD         STJ        380656023 9/2/2015    Cs-134       2.62E+OO     l.60E+OO   5.62E+OO u WD         STJ        380656023 9/2/2015    Cs-137       l.73E+OO     l.44E+OO   4.95E+OO u WD         STJ        380656023 9/2/2015     Fe-59      -5.56E-Ol     4.30E+OO   l.20E+Ol u WD         STJ        380656023 9/2/2015     I-131      -7.58E-Ol     2.75E+OO   9.04E+OO u WD         STJ        380656023 9/2/2015     K-40        l.87E+Ol     2.05E+Ol   6.96E+Ol u WD         STJ        380656023 9/2/2015    La-140       4.26E-Ol     2.29E+OO   7.83E+OO u WD         STJ        380656023 9/2/2015    Mn-54        l.37E+OO     l.64E+OO   5.69E+OO u WD         STJ        380656023 9/2/2015    Nb-95        l.69E+OO     l.57E+OO   ~.31E+OO u WD         STJ        380656023 9/2/2015    Ru-103       l.36E+OO     l.63E+OO   5.54E+OO u WD         STJ        380656023 9/2/2015    Ru-106       l.IOE+Ol     l.IIE+Ol   3.82E+Ol u WD         STJ        380656023 91212015    Sb-124      -5.09E+OO     4.95E+OO   8.39E+OO u WD         STJ      . 380656023 9/2/2015    Sb-125      -7.32E-01     3.98E+OO   l.30E+Ol u WD         STJ        380656023 9/2/2015     Se-75      -2.17E+OO     2.07E+OO   6.03E+OO u WD         STJ        380656023 9/2/2015    Th-228       2.03E+OO     4.41E+OO   l.17E+Ol u WD         STJ        380656023 9/2/2015    Zn-65        9.80E+OO     2.48E+OO   O.OOE+OO UI WD         STJ        380656023 9/2/2015     Zr-95       l.98E+OO     3.67E+OO   l.07E+Ol u WD         STJ        380656024 9/2/2015     I-131      -7.55E-02      l.70E-Ol  5.89E-Ol u WD         LTW        380656025 91212015    Ac-228      -l.34E+Ol     6.98E+OO   l.55E+Ol u WD         LTW        380656025 9/2/2015   Ag-108m       2.79E+OO     l.21E+OO   3.99E+OO u
 *WD        LTW         380656025 9/2/2015   Ag-llOm        l.88E-01    l.16E+OO   3.77E+OO u WD        LTW         380656025 9/2/2015    Ba-140       3.88E+OO     6.08E+OO   2.07E+Ol u WD        LTW         380656025 9/2/2015     Be-7       -l.03E+Ol     l.IIE+Ol   3.33E+Ol u WD         LTW        380656025 9/2/2015    BETA         l.41E+OO     8.63E-Ol   2.31E+OO u WD         LTW        380656025 9/2/2015    Ce-141       5.35E*02     2.13E+OO   7.lOE+OO u WD         LTW        380656025 9/2/2015    Ce-144       l.56E+Ol     8.12E+OO   2.66E+Ol u WD        LTW         380656025 9/2/2015    Co-57       -2.42E+OO     1.1 IE+OO  2.84E+OO u WD        LTW         380656025 9/2/2015    Co-58       -l.94E+OO     l.34E+OO   3.63E+OO u WD        LTW         380656025 9/2/2015    Co-60        2.53E+OO     l.45E+OO   5.26E+OO u WD        LTW         380656025 9/2/2015     Cr-51       l.25E+Ol     l.08E+Ol   3.67E+Ol u WD        LTW         380656025 9/2/2015    Cs-134       l.43E+OO     l.47E+OO   4.83E+OO u WD         LTW        380656025 9/2/2015    Cs-137        l.OIE-01 . l.33E+OO   4.30E+OO u WD        LTW         380656025 9/2/2015     Fe-59       l.04E+OO     2.37E+OO   8.03E+OO u WD        LTW         380656025 9/2/2015     I-131      -3.36E+OO     2.21E+OO   6.28E+OO u WD        LTW         380656025 9/2/2015     K-40        l.66E+Ol     l.31E+Ol   4.81E+Ol u WD        LTW         380656025 9/2/2015    La-140      -2.65E+OO     l.86E+OO   4.26E+OO u WD         LTW        380656025 9/2/2015    Mn-54       -1.14E+OO     l.57E+OO   3.92E+OO u WD        LTW         380656025 91212015    Nb-95         l.96E-01    l.20E+OO   3.94E+OO u wb        LTW         380656025 9/2/2015    Ru-103      -2.73E+OO     l.65E+OO   3.57E+OO u WD        LTW         380656025 9/2/2015    Ru-106       l.67E+Ol     l.16E+Ol   3.96E+Ol u WD        LTW         380656025 91212015    Sb-124       3.40E+OO     2.98E+OO   l.09E+Ol u WD        LTW         380656025 9/2/2015    Sb-125       4.47E+OO     3.IOE+OO   l.07E+Ol u WD        LTW         380656025 9/2/2015     Se-75      -2.70E+OO     l.69E+OO   4.47E+OO u WD        LTW         380656025 91212015    Th-228       4.95E+OO     3.34E+OO   8.20E+OO u WD        LTW         380656025 9/2/2015    Zn-65       -5.93E+OO
* 3.48E+OO   8.44E+OO u WD        LTW         380656025 9/2/2015     Zr-95      -l.28E+OO     2.06E+OO   6.46E+OO u WD        LTW         380656026 9/2/2015     I-131       7.84E-Ol     2.98E-01   8.03E-01 u D-91

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)    (pCi/L)   (pCi/L)
WD         STJ       381428023 9/16/2015   Ac-228      -6.35E+OO    6.94E+OO    2.08E+Ol u WD         STJ       381428023 9/16/2015  Ag-108m      -6.5IE-01     l.37E+OO   4.25E+OO u WD         STJ       381428023 9/16/2015  Ag-llOm      -2.45E-01     l.40E+OO   4.62E+OO u WD         STJ       381428023 9/16/2015   Ba-140       l.63E+OO    7.61E+OO    2.60E+Ol u WD         STJ       381428023 9/1612015    Be-7        3.16E+Ol     l.58E+Ol   5.15E+Ol u WD         STJ       381428023 9/16/2015   BETA        -2.73E-01
* 8.66E-01   2.90E+OO u WD         STJ       381428023 9/16/2015   Ce-141       7.12E-01    3.17E+OO    1.00E+Ol u WD         STJ       381428023 9/16/2015   Ce-144      -3.99E+OO     1.04E+Ol   3.46E+Ol u WD         STJ       381428023 9/16/2015   Co-57        2.22E-01     1.44E+OO   4.91E+OO u WD         STJ       381428023 9/16/2015   Co-58       -5.72E+OO    2.45E+OO    3.78E+OO u WD         STJ       381428023 9/16/2015   Co-60       -4.81E-02     1.62E+OO   5.42E+OO u WD         STJ       381428023 9/16/2015    Cr-51       7.70E+OO     1.46E+Ol   4.87E+Ol u WD.        STJ       381428023 9/16/2015   Cs-134       2.88E+OO     1.85E+OO   6.42E+OO u WD         STJ       381428023 9/16/2015   Cs-137       1.85E-01     l.60E+OO   5.38E+OO u WD         STJ       381428023 9116/2015    Fe-59       4.22E+OO    2.65E+OO    9.62E+OO u WD         STJ       381428023 9/16/2015    I-131       1.99E+OO    2.81E+OO    9.41E+OO u WD         STJ       381428023 9/16/2015    K-40        3.1 IE+Ol   2.06E+Ol    7.54E+Ol u WD         STJ       381428023 9/16/2015   La-140       7.60E-OI    2.21E+OO    7.67E+OO u WD         STJ       381428023 9/16/2015   Mn-54         l.66E-02    1.76E+OO   5.80E+OO u WD         STJ       381428023 9/16/2015   Nb-95       -2.12E-OI     l.74E+OO   5.71E+OO u WD         STJ       381428023 9/16/2015   Ru-103      -7.86E-Ol     1.95E+OO   6.08E+OO u WD         STJ       381428023 9/16/2015   Ru-106      -1.68E+Ol     1.34E+Ol   3.87E+Ol u WD         STJ       381428023 9116/2015   Sb-124      -4.81E+OO    4.03E+OO    l.05E+Ol u WD         STJ       381428023 9/16/2015   Sb-125      -5.16E-01    3.90E+OO    1.25E+Ol u WD         STJ       381428023 9/16/2015    Se-75       1.45E+OO    2.31E+OO    7.75E+OO u WD         STJ       381428023 9/16/2015   Th-228      4.98E+OO     4.73E+OO    1.14E+Ol u WD         STJ       381428023 9/16/2015    Zn-65      -6.78E-01    3.06E+OO    9.68E+OO u WD         STJ       381428023 9/16/2015    Zr-95      -2.60E+OO    2.79E+OO    7.71E+OO u WD         STJ       381428024 9/16/2015    I-131       7.84E-02      1.68E-01  5.34E-Ol u WD         LTW       381428025 9/16/2015   Ac-228       l.25E+OO     5.21E+OO   l.63E+Ol u WD         LTW       381428025 9/16/2015  Ag-108m       4.79E-01     l.18E+OO   3.90E+OO u WD         LTW       381428025 9/16/2015  Ag-llOm       5.40E-02     l.43E+OO   4.16E+OO u WD         LTW       381428025 9/16/2015   Ba-140      -9.65E+OO     8.13E+OO   2.30E+Ol u WD         LTW       381428025 9/16/2015    Be-7       -5.02E+OO     l.13E+Ol   3.50E+Ol u WD         LTW       381428025 9/16/2015   BETA         l.76E+OO     9.21E-01   2.47E+OO u WD         LTW       381428025 9/16/2015   Ce-141      -3.20E+OO    2.35E+OO    6.70E+OO u WD         LTW       381428025 9/16/2015   Ce-144       4.90E-01    9.0IE+OO    2.77E+Ol u WD         LTW       381428025 9/16/2015   Co-57        1.21E+OO     1.31E+OO   3.88E+OO u WD         LTW       381428025 9/16/2015    Co-58      -4.13E-01     1.31E+OO   4.20E+OO u WD         LTW       381428025 9/16/2015    Co-60       4.64E-Ol     1.36E+OO   4.65E+OO u WD         LTW       381428025 9/16/2015    Cr-51      -6.51E+OO     1.18E+Ol   3.77E+Ol u WD         LTW       381428025 9/16/2015   Cs-134       1.04E+OO     1.36E+OO   4.68E+OO u WD         LTW       381428025 9/16/2015   Cs-137       3.25E+OO     1.92E+OO   4.45E+OO u WD         LTW       381428025 9/1612015    Fe-59       9.20E-01     2.81E+OO   9.67E+OO u WD         LTW       381428025 9/1612015    I-131      -3.69E+OO     2.28E+OO   6.08E+OO u WD         LTW       381428025 9/16/2015    K-40       -3.IOE+Ol     1.67E+Ol   4.45E+Ol u WD         LTW       381428025 9/16/2015   La-140      -1.16E+OO     l.70E+OO   4.83E+OO u WD         LTW       381428025 9/16/2015   Mn-54       -9.85E-01     1.27E+OO   3.83E+OO u WD         LTW       381428025 9/16/2015   Nb-95        8.32E-01     1.31E+OO   4.22E+OO u WD         LTW       381428025 9/16/2015   Ru-103      -1.47E-02     1.55E+OO   4.98E+OO u D-92

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L).   (pCi/L)    (pCi/L)
WD         LTW       381428025 9/16/2015    Ru-106      -l.17E+OO    1.04E+Ol    3.47E+Ol u WD         LTW       381428025 911612015    Sb-124        5.89E-01   2.39E+OO    8.06E+OO u WD         LTW       381428025 9/16/2015    Sb-125      -1.0lE+Ol    4.51E+OO    l.05E+Ol u WD         LTW       381428025 9/16/2015     Se-75       6.95E+OO    5.79E+OO    6.03E+OO UI WD         LTW       381428025 911612015    Th-228       2.84E+OO    3.42E+OO    9.62E+OO u WD         LTW       381428025 911612015     Zn-65        9.74E-01   2.49E+OO    8.61E+OO u WD         LTW       381428025 911612015     Zr-95       -4.0lE-02   1.95E+OO    6.44E+OO u WD         LTW       381428026 911612015     I-131       -1.40E-01   1.64E-01    5.84E-Ol u WD         STJ       382263023 9/30/2015    Ac-228       l.07E+OO    3.55E+OO    7.19E+OO u WD         STJ       382263023 9/30/2015   Ag-108m       -3.89E-01   5.30E-01    l.43E+OO u WD         STJ       382263023 9/30/2015   Ag-l!Om        3.42E-01   5.0SE-01    1.69E+OO u WD         STJ       382263023 9/30/2015    Ba-140      -2.05E+OO    2.83E+OO    7.95E+OO u WD         STJ       382263023 9/30/2015     Be-7        2.77E+OO    5.09E+OO    1.43E+Ol u WD         STJ       382263023 9/30/2015    BETA          6.67E~03   9.32E-01    3.03E+OO u WD         STJ       382263023 9/30/2015    Ce-141      -4.51E+OO    1.70E+OO    2.94E+OO u WD         STJ       382263023 9/30/2015    Ce-144      -7.96E-01    3.47E+OO    1.lOE+Ol u WD         STJ       382263023 9/30/2015    Co-57         2.56E-01   4.50E-01    l.44E+OO u WD         STJ       382263023 9/30/2015    Co-58         2.87E-01   4.87E-01    l.60E+OO u WD         STJ       382263023 9/30/2015    Co-60         4.65E-01   5.00E-01    l.67E+OO u WD         STJ       382263023 9/30/2015     Cr-51       -6.31E-02   4.82E+OO    1.58E+Ol u WD         STJ       382263023 9/30/2015    Cs-134       -4.43E-01   5.48E-01    1.71E+OO u WD         STJ       382263023 9/30/2015    Cs-137        3.95E-01   5.52E-01    l.83E+OO u WD         STJ       382263023 9/30/2015     Fe-59       -7.59E-01   9.44E-01    3.00E+OO u WD         STJ       382263023 9/30/2015     1-131       8.24E-01    9.79E-01    3.18E+OO u WD         STJ       382263023 9/30/2015     K-40       -3.85E+OO    8.98E+OO    2.33E+Ol u WD         STJ       382263023 9/30/2015    La-140      -4. lOE-01   8.46E-01    2.66E+OO u WD         STJ       382263023 9/30/2015    Mn-54         1.1 lE-01  8.97E-01    l.53E+OO u WD         STJ       382263023 9/30/2015    Nb-95        2.00E+OO    l.llE+OO    1.66E+OO UI WD         STJ       382263023 9/30/2015    Ru-103      -3.91E-01    5.36E-01    1.76E+OO u WD         STJ       382263023 9/30/2015    Ru-106       4.64E+OO    4.45E+OO    l.47E+Ol u WD         STJ       382263023 9/30/2015    Sb-124       2.56E+OO    l.16E+OO    3.71E+OO u WD         STJ       382263023 9/30/2015    Sb-125        6.46E-01   1.41E+OO    4.56E+OO u WD         STJ       382263023 9/30/2015     Se-75        9.22E-01   7.0lE-01    2.26E+OO u WD         STJ       382263023 9/30/2015    Th-228        4.94E-01   1.64E+OO    3.33E+OO u WD         STJ       382263023 9/30/2015    Zn-65       -1.56E+OO    1.22E+OO    3.llE+OO u WD         STJ       382263023 9/30/2015     Zr-95      -2.47E-01    9.50E-01    2.90E+OO u WD         STJ       382263024 9/30/2015     1-131      -2.58E-01    2.20E-01    7.98E-01 u WD         LTW       382263025 9/30/2015    Ac-228      -2".28E+OO   2.86E+OO    6.69E+OO u WD         LTW       382263025 9/30/2015   Ag-108m      -2.60E-01    4.50E-01    l.45E+OO u WD        LTW        382263025 9/30/2015   Ag-llOm      -4.25E-01    4.78E-01    1.47E+OO u WD         LTW       382263025 9/30/2015    Ba-140       1.99E+OO    2.75E+OO    7.98E+OO u WD         LTW       382263025 9/30/2015     Be-7        3.48E+OO    4.24E+OO    l.40E+Ol u WD         LTW       382263025 9/30/2015    BETA         -6.S6E-Ol   8.61E-01    2.98E+OO u WD         LTW       382263025 9/30/2015    Ce-141      -3.52E+OO    l.69E+OO    3.09E+OO u WD         LTW       382263025 9/30/2015    Ce-144       2.27E+OO    3.64E+OO    l.18E+Ol u WD         LTW       382263025 9/30/2015    Co-57         4.79E-01   4.77E-01    1.53E+OO u WD        LTW        382263025 9/30/2015    Co-58       -l.21E+OO    5.46E-01    1.44E+OO u WD        LTW        382263025 9/30/2015    Co-60       -2.68E-01    4.89E-01    l.54E+OO u WD         LTW       382263025 9/30/2015     Cr-51      -2.87E+OO    4.92E+OO    l.62E+Ol u WD         LTW       382263025 9/30/2015    Cs-134      -4.42E-01    5.84E-01    1.63E+OO u D-93

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.        MDC      FLAGS TYPE      STATION       LSN       DATE      NUCLIDE           (pCi/L)   (pCi/L)     (pCi/L)
WD         LTW       382263025 9/30/2015     Cs-137       4.SOE-01    5.15E-01    1.67E+OO u WD         LTW       382263025 9/30/2015      Fe-59       6.12E-01    9.87E-01    3.29E+OO u WD         LTW       382263025 9/30/2015      I-131       -8.64E-01   9.55E-01    3.06E+OO u WD         LTW       382263025  9/30/2015     K-40       -1.02E+Ol    l.07E+Ol    2.47E+Ol u WD         LTW       382263025  9/30/2015    La-140        8.74E-02   7.90E-01    2.66E+OO u WD         LTW       382263025  9/30/2015    Mn-54         2.40E-02   4.52E-01     l.52E+OO u WD         LTW       382263025 9/30/2015     Nb-95       -5.23E-01    7.78E-01     l.69E+OO u WD         LTW       382263025 9/30/2015     Ru-103       1.12E+OO    7.88E-01    1.69E+OO u WD         LTW       382263025 9/30/2015     Ru-106       7.70E+OO    4.81E+OO    1.51E+Ol u WD         LTW       382263025 9/30/2015     Sb-124      -l.74E+OO    l.06E+OO    2.93E+OO u WD         LTW       382263025 9/30/2015     Sb-125       5.30E-02    l.36E+OO    4.51E+OO u WD         LTW       382263025 9/30/2015      Se-75       l.22E+OO    7.49E-01    2.41E+OO u WD         LTW       382263025 9/30/2015     Th-228       3.17E+OO    l.89E+OO    3.66E+OO u WD         LTW       382263025 9/30/2015     Zn-65        6.15E-01    l.05E+OO    3.07E+OO u WD         LTW       382263025 9/30/2015      Zr-95       3.3 lE-01   7.70E-01    2.62E+OO u WD         LTW       382263026 9/30/2015      I-131       2.83E-01    2.49E-01     7.46E-01 u WD         STJ       383491023 10/14/2015    Ac-228       2.77E+OO    6.52E+OO     l.72E+Ol u WD         STJ       383491023 10/14/2015   Ag-108m       3.18E+OO    l.43E+OO    4.55E+OO u WD         STJ       383491023 10/14/2015   Ag-llOm      -3.37E+OO    l.78E+OO    3.70E+OO u WD         STJ       383491023 10/14/2015    Ba-140       l.21E+OO    5.78E+OO    l.88E+Ol u WD         STJ       383491023 10/14/2015     Be-7       -5.71E+OO    l.05E+Ol    3.22E+Ol u WD         STJ       383491023 10/14/2015    BETA         2.21E-01    7.58E-01    2.48E+OO u WD         STJ       383491023 10/14/2015    Ce-141       4.88E+OO    2.54E+OO    7.88E+OO u WD         STJ       383491023 10/14/2015    Ce-144      -l.03E+Ol    8.83E+OO    2.60E+Ol U WD         STJ       383491023 10/14/2015    Co-57        2.79E-01    l.09E+OO    3.57E+OO U WD         STJ       383491023 10/14/2015    Co-58        2.35E-01    1.llE+OO    3.71E+OO U WD         STJ       383491023 10/14/2015    Co-60        7.21E-01    l.39E+OO    4.81E+OO U WD         STJ       383491023 10/14/2015     Cr-51      -2.06E+Ol    l.30E+Ol    3.65E+Ol. U WD         STJ       383491023 10/14/2015    Cs-134       3.46E-01    l.35E+OO    4.54E+OO U WD         STJ       383491023 10/14/2015    Cs-137      -4.17E+OO    2.07E+OO    4.86E+OO U WD         STJ       383491023 10/14/2015     Fe-59       4.77E+OO    2.71E+OO    8.96E+OO U WD         STJ       383491023 10/14/2015     I-131      -2.47E-01    2.22E+OO    7.25E+OO U WD         STJ       383491023 10/14/2015     K-40        2.50E+Ol    l.92E+Ol    3.77E+Ol U WD         STJ       383491023 10/14/2015    La-140       2.28E+OO    2.12E+OO    7.57E+OO U WD         STJ       383491023 10/14/2015    Mn-54       -4.52E-02    l.23E+OO   '4.0lE+OO U WD         STJ       383491023 10/14/2015    Nb-95        l.21E+OO    l.41E+OO    4.83E+OO U WD         STJ       383491023 10/14/2015    Ru-103      -6.47E-02    1.50E+OO    4.81E+OO U WD         STJ       383491023 10/14/2015    Ru-106       4.29E+OO    l.02E+Ol    3.51E+Ol U WD         STJ       383491023 10/14/2015    Sb-124       2.39E+OO    3.87E+OO    l.32E+Ol U WD         STJ       383491023 10/14/2015    Sb-125      -6.74E+OO    3.86E+OO    1.00E+Ol U WD         STJ       383491023 10/14/2015     Se-75       2.17E-01    l.61E+OO    5.41E+OO U WD         STJ       383491023 10/14/2015    Th-228      -l.15E+OO    3.27E+OO    9.91E+OO U WD         STJ       383491023 10/14/2015    Zn-65        2.57E+OO    2.85E+OO    1.00E+Ol u WD         STJ       383491023 10/14/2015     Zr-95       4.25E-01    l.91E+OO    6.44E+OO u WD        *STJ       383491024 10/14/2015     I-131        l.66E-02   2.19E-01     7.17E-01 u WD         LTW       383491025 10/14/2015    Ac-228      -8.55E+OO    5.62E+OO    1.43E+Ol u WD         LTW       383491025 10/14/2015   Ag-108m       1.49E+OO    l.22E+OO    4.0SE+OO u WD         LTW.      383491025 10/14/2015   Ag-llOm       2.17E-01    l.06E+OO    3.58E+OO u WD         LTW       383491025 10/14/2015    Ba-140      -4.87E+OO    7.05E+OO    2.12E+Ol u WD         LTW       383491025 10/14/2015     Be-7        3.19E+OO    l.05E+Ol    3.45E+Ol u
               \.
D-94

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WD          LTW      383491025 10/14/2015   BETA         1.48E+OO    7.16E-01    2.26E+OO u WD          LTW     *383491025 10/14/2015   Ce-141      -3.42E+OO    2.93E+OO    7.63E+OO u WD          LTW      383491025 10/14/2015   Ce-144       3.06E+OO    8.43E+OO    2.77E+Ol u WD          LTW      383491025 10/14/2015   Co-57       -8.56E-02    1.16E+OO    3.78E+OO u WD
* LTW      383491025 10/14/2015   Co-58       -1.46E+OO    1.15E+OO    3.llE+OO u WD          LTW      383491025 10/14/2015   Co-60       -6.86E-01    l.15E+OO    3.44E+OO u WD          LTW      383491025 10/14/2015    Cr-51       l.30E+Ol    1.13E+Ol    3.83E+Ol u WD          LTW      383491025 10/14/2015   Cs-134       4.51E-01    1.25E+OO    4.21E+OO u WD          LTW      383491025 10/14/2015   Cs-137       4.72E-01    1.24E+OO    4.23E+OO u WD          LTW      383491025 10/14/2015    Fe-59      -2.17E+OO    2.46E+OO    7.30E+OO u WD          LTW      383491025 10/14/2015    I-131      -2.40E-02    2.36E+OO    7.76E+OO u WD          LTW     -383491025 10/14/2015    K-40        1.85E+OO    1.60E+Ol    5.28E+Ol u WD.         LTW      383491025 10/14/2015   La-140      -4.26E-03    2.22E+OO    7.20E+OO u WD          LTW      383491025 10/14/2015   Mn-54       -8.35E-01    1.34E+OO
* 4.13E+OO u WD          LTW      383491025 10/14/2015   Nb-95       -1.17E+OO    1.33E+oo*   3.97E+OO u WD          LTW      383491025 10/14/2015   Ru-103      -4.58E-01    1.29E+OO    4.0lE+OO u WD          LTW      383491025 10/14/2015   Ru-106       6.90E+OO    1.00E+Ol    3.48E+Ol u WD          LTW      383491025 10/14/2015   Sb-124       9.66E-02    2.34E+OO    7.91E+OO u WD          LTW      383491025 10/14/2015   Sb-125      -4.27E+OO    3.51E+OO    1.00E+Ol u WD          LTW      383491025 10/14/2015    Se-75      -2.56E-01    1.87E+OO    6.25E+OO u WD          LTW      383491025 10/14/2015   Th-228       3.18E+OO    3.52E+OO    9.43E+OO u WD          LTW      383491025 10/14/2015   Zn-65       -6.90E+OO    2.99E+OO    5.71E+OO u WD          LTW      383491025 10/14/2015    Zr-95      -1.86E+OO    1.93E+OO    5.58E+OO U WD          LTW      383491026 10/14/2015    I-131      -3.50E-01    1.83E-01    7.02E-01 u WD          STJ      384389023 10/28/2015   Ac-228      -2.51E+OO    4.15E+OO    l.25E+Ol U WD          STJ      384389023 10/28/2015  Ag-108m       7.09E-01    8.60E-01    2.88E+OO U WD          STJ      384389023 10/28/2015  Ag-llOm       1.1 lE+OO   9.29E-01    3.22E+OO U WD          STJ      384389023 10/28/2015   Ba-140       2.32E+Ol    7.21E+OO    l.47E+Ol UI WD          STJ      384389023 10/28/2015    Be-7       -1.46E+OO    7.73E+OO    2.49E+Ol U WD          STJ      384389023 10/28/2015   BETA         2.14E+OO    1.0lE+OO    2.67E+OO U WD          STJ      384389023 10/28/2015   Ce-141       l.57E+OO    2.77E+OO    5.27E+OO U WD          STJ      384389023 10/28/2015   Ce-144       6.98E+OO    6.98E+OO    2.26E+Ol U WD          STJ      384389023 10/28/2015   Co-57       -4.42E-01    8.43E-01    2.66E+OO U WD          STJ      384389023 10/28/2015   Co-58        3.72E-01    7.72E-01    2.65E+OO U WD          STJ      384389023 10/28/2015   Co-60       -2.00E-01    8.93E-01    2.80E+OO U WD          STJ      384389023 10/28/2015    Cr-51       l.12E+Ol    9.02E+OO    3.03E+Ol U WD          STJ      384389023 10/28/2015   Cs-134       2.22E+OO    1.13E+OO    3.81E+OO U WD          STJ      384389023 10/28/2015   Cs-137       6.51E-Ol    1.06E+OO    3.64E+OO U WD          STJ      384389023 10/28/2015    Fe-59       l.14E+OO    l.76E+OO    5.98E+OO U WD          STJ      384389023 10/28/2015    I-131       4.34E+OO    1.97E+OO    6.16E+OO U WD          STJ      384389023 10/28/2015    K-40       -8.81E+OO    1.25E+Ol    3.72E+Ol U WD          STJ      384389023 10/28/2015   La-140      -l.03E+OO    1.75E+OO    5.08E+OO U WD          STJ      384389023 10/28/2015   Mn-54       -1.00E+OO    9.06E-01    2.68E+OO U WD          STJ      384389023 10/28/2015   Nb-95       -4.15E-01    9.l lE-01   2.94E+OO U WD          STJ      384389023 10/28/2015   Ru-103      -l.59E+OO    l.08E+OO    2.99E+OO U WD          STJ      384389023 10/28/2015   Ru-106      -1.26E+OO    7.93E+OO    2.51E+Ol U WD          STJ      384389023 10/28/2015   Sb-124       6.56E-01    2.21E+OO    7.03E+OO U WD          STJ      384389023 10/28/2015   Sb-125       2.63E+OO    2.72E+OO    9.lOE+OO U WD          STJ      384389023 10/28/2015    Se-75      -3.64E-01    1.27E+OO    4.21E+OO U WD          STJ      384389023 10/28/2015   Th-228      -2.85E+OO    2.31E+OO    6.37E+OO U D-95

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                        CONC     STD.DEV.      MDC      FLAGS TYPE     STATION       LSN      DATE       NUCLIDE           (pCiJL)   (pCi/L)   (pCi/L)
WD         STJ       384389023 10/28/2015    Zn-65        2.80E+OO    l.51E+OO   7.70E+OO u WD         STJ       384389023 10/28/2015     Zr-95       l.32E+OO    l.48E+OO   5.15E+OO u WD         STJ       384389024 10/28/2015     1-131       2.21E-01    2.53E-01   7.75E-Ol u WD         LTW       384389025 10/28/2015    Ac-228      -7.41E+OO    5.00E+OO   l.36E+Ol u WD         LTW       384389025 10/28/2015   Ag-108m      -l.23E+OO    9.37E-Ol   2.76E+OO u WD         LTW       384389025 10/28/2015   Ag-llOm       l.77E+OO    l.27E+OO   3.50E+OO u WD         LTW       384389025 10/28/2015    Ba-140       l.07E+Ol    5.88E+OO   l.81E+Ol u WD         LTW       384389025 10/28/2015     Be-7        l.15E+Ol    8.46E+OO   2.83E+Ol u WD         LTW       384389025 10/28/2015    BETA         8.85E-01    5.69E-01   l.81E+OO u WD         LTW       384389025 10/28/2015    Ce-141       l.17E+OO    2.29E+OO   6.79E+OO u WD         LTW       384389025 10/28/2015    Ce-144       4.49E+OO    7.52E+OO   2.46E+Ol u WD         LTW       384389025 10/28/2015    Co-57       -l.53E+OO    l.13E+OO   2.95E+OO u WD         LTW       384389025 10/28/2015. Co-58       -4.09E-01    8.55E-01   2.77E+OO u WD         LTW       384389025 10/28/2015    Co-60        2.93E-01    9.37E-01   3.12E+OO u WD         LTW       384389025 10/28/2015     Cr-51       1.26E+Ol    9.86E+OO   3.31E+Ol u
 .WD         LTW       384389025 10/28/2015    Cs-134       4.lOE-01    9.38E-Ol   3.23E+OO u WD         LTW       384389025 10/28/2015    Cs-137       l.17E+OO    1.09E+OO   3.25E+OO u WD         LTW       384389025 10/28/2015     Fe-59      -1.13E+OO    1.85E+OO   5.72E+OO u WD         LTW       384389025 10/28/2015     1-131      -3.73E+OO    2.12E+OO   5.94E+OO u WD         LTW       384389025 10/28/2015     K-40        9.95E+OO    1.25E+Ol   3.59E+Ol u WD         LTW       384389025 10/28/2015    La-140      -2.08E+OO    1.96E+OO   5.84E+OO u WD         LTW       384389025 10/28/2015    Mn-54        1.44E+OO    9.99E-01   3.42E+OO u WD         LTW       384389025 10/28/2015    Nb-95        7.93E-01    9.59E-01   3.32E+OO U WD         LTW       384389025 10/28/2015    Ru-103      -1.04E+OO    1.15E+OO   3.53E+OO U WD        LTW        384389025 10/28/2015    Ru-106      -9.68E+OO    9.51E+OO   2.81E+Ol U WD         LTW       384389025 10/28/2015    Sb-124      -2.04E-01    2.00E+OO   6.59E+OO U WD         LTW       384389025 10/28/2015    Sb-125      -1.05E+OO
* 3.26E+OO   8.87E+OO U WD         LTW       384389025 10/28/2015     Se-75    . -9.09E-01    l.35E+OO   4.41E+OO U WD         LTW       384389025 10/28/2015    Th-228      -3.06E+OO    2.45E+OO   6.78E+OO U WD         LTW       384389025 10/28/2015    Zn-65        l.OlE+OO    1.92E+OO   5.78E+OO U WD         LTW       384389025 10/28/2015     Zr-95      -7.23E-01    1.63E+OO   5.31E+OO U WD         LTW       384389026 10/28/2015     I-131       3.98E-01    2.76E-01   8.29E-01 u WD         STJ       385529023 11/11/2015    Ac-228      -2.19E-01    3.92E+OO   9.62E+OO U WD         STJ       385529023 11/1112015   Ag-108m       9.76E-01    6.17E-01   2.00E+OO U WD         STJ       385529023 11/11/2015   Ag-llOm      -2.llE+OO    9.65E-01   2.06E+OO U WD         STJ       385529023 11/11/2015    Ba-140       l.79E+OO    3.04E+OO   l.02E+Ol U WD         STJ       385529023 11/11/2015     Be-7        l.lOE+Ol    5.99E+OO   l.89E+Ol U WD         STJ       385529023 11/11/2015    BETA         5.99E-01    9.58E-01   2.88E+OO U WD         STJ       385529023 11/11/2015    Ce-141       l.79E+OO    1.0lE+OO   3.61E+OO U WD         STJ       385529023 11/11/2015    Ce-144        l.53E-02   4.63E+OO   1.47E+Ol U WD         STJ       385529023 11/11/2015    Co-57        8.70E-02    6.04E-01   l.92E+OO U WD         STJ       385529023 11/11/2015    Co-58       -2.93E-02    6.22E-01   2.0lE+OO U WD         STJ       385529023 11/11/2015    Co-60        4.77E-01    6.24E-Ol   2.07E+OO u WD         STJ       385529023 11/11/2015     Cr-51      -7.79E+OO    6.58E+OO   2.0lE+Ol u WD         STJ       385529023 11/11/2015    Cs-134      -1.08E+OO    8.50E-Ol   2.12E+OO u WD         STJ       385529023 11/11/2015    Cs-137      -1.llE+OO    l.03E+OO   2.19E+OO U WD         STJ       385529023 11/11/2015     Fe-59       2.20E+OO    l.36E+OO   4.38E+OO U WD         STJ       385529023 11/11/2015     I-131       4.54E-01    1.03E+OQ   3.34E+OO U WD         STJ       385529023 11/11/2015     K-40       -7.27E+OO    l.34E+Ol   3.46E+Ol U WD         STJ       385529023 11/11/2015    La-140       l.51E+OO    9.86E-01   2.94E+OO U D-96

Donald C. Cook Nuclear Plant         *Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/L)    (pCi/L)    (pCi/L)
WD         STJ       385529023 1111112015   Mn-54       7.09E-01    6.35E-Ol    2.05E+OO u WD         STJ       385529023 11111/2015   Nb-95       l.66E+OO    7.65E-01    2.29E+OO u WD         STJ       385529023 11/1112015   Ru-103      8.86E-01    6.85E-01    2.25E+OO u WD         STJ       385529023 11/11/2015   Ru-106     -l.48E+OO    5.63E+OO    l.84E+Ol u WD         STJ       385529023 11111/2015   Sb-124      6.90E-01    l.56E+OO    5.24E+OO u WD         STJ       385529023 11111/2015   Sb-125     -l.65E+OO    l.74E+OO    5.62E+OO u WD         STJ       385529023 11111/2015    Se-75      2.49E-01    l.OOE+OO    2.90E+OO u WD         STJ       385529023 11111/2015   Th-228     -2.95E+OO    l.98E+OO    4.38E+OO u WD         STJ       385529023 11/1112015    Zn-65     -5.92E-02    l.38E+OO    3.91E+OO u WD         STJ       385529023 11111/2015    Zr-95     -1.15E+OO    1.14E+OO    3.47E+OO u WD         STJ       385529024 11/11/2015    I-131     -2.86E-02    2.42E-01    8.04E-01 u WD         LTW       385529025 11/11/2015   Ac-228      l.46E+OO    4.06E+OO    9.03E+OO u WD         LTW       385529025 11/11/2015  Ag-108m     -3.05E-01    5.24E-01    l.71E+OO u WD         LTW       385529025 1111112015  Ag-llOm     -2.97E-01    5.74E-01    l.83E+OO u WD         LTW       385529025 11/11/2015   Ba-140      7.53E-01    2.76E+OO    9.15E+OO lI WD         LTW       385529025 11/1112015    Be-7       9.57E+OO    5.25E+OO    l.66E+Ol u WD         LTW       385529025 11/11/2015   BETA       2.28E+OO     1.16E+OO    3.48E+OO u WD         LTW       385529025 11/1112015   Ce-141      1.12E+OO    l.81E+OO    3.35E+OO u WD         LTW       385529025 11/11/2015   Ce-144     -5.75E-01    4.21E+OO    l.35E+Ol u WD         LTW       385529025 11/11/2015    Co-57      l.22E-01    5.44E-01    l.82E+OO u WD         LTW       385529025 1111112015    Co-58     -5.85E-01    5.61E-01    l.77E+OO u WD         LTW       385529025 11/1112015    Co-60     -6.31E-01    6.50E-01    l.62E+OO u WD         LTW       385529025 11/1112015    Cr-51     -2.35E+OO    5.77E+OO    l.82E+Ol u WD         LTW       385529025 11/11/2015   Cs-134     -7.85E-01    6.82E~Ol    2.02E+OO u WD         LTW       385529025 11111/2015   Cs-137      l.78E-01    6.23E-01    2.04E+OO u WD         LTW       385529025 1111112015  . Fe-59     -8.83E-01    1.llE+OO    3.49E+OO u WD         LTW       385529025 1111112015    I-131     -9.26E-01    9.16E-01    2.92E+OO u WD         LTW       385529025 11111/2015    K-40      2.86E+OO     l.42E+Ol    l.70E+Ol u WD         LTW       385529025 11/11/2015   La-140     -2.91E-01    8.76E-01    2.87E+OO u WD         LTW       385529025 11111/2015   Mn-54      -l.38E-01    5.17E-01    l.72E+OO u WD         LTW       385529025 11/11/2015   Nb-95      -l.50E-01    6.79E-01    l.86E+OO u WD         LTW       385529025 11111/2015   Ru-103      2.02E-01    6.17E-01    2.05E+OO u WD         LTW       385529025 11/11/2015   Ru-106     2.98E+OO     5.lOE+OO    l.68E+Ol u WD         LTW       385529025 11/11/2015   Sb-124     -l.60E+OO    l.50E+OO    4.57E+OO u WD         LTW       385529025 1111112015   Sb-125     -2.87E+OO    l.77E+OO    5.22E+OO u WD         LTW       385529025 1111112015    Se-75      7.68E-01    8.70E-Ol    2.80E+OO u WD         LTW       385529025 11/1112015   Th-228     2.29E+OO     2.38E+OO    4.68E+OO u WD         LTW       385529025 11111/2015    Zn-65      l.04E+OO    l.30E+OO    3.80E+OO u WD        *LTW       385529025 11/11/2015    Zr-95      6.58E-01    l.31E+OO    3.70E+OO u WD         LTW       385529026 1111112015    I-131      8.71E-02    2.68E-01    8.64E-01 u WD         STJ       389968001 12/23/2015     H-3       3.13E+02    4.03E+02    1.26E+03 u WD         LTW       389968002 12/23/2015     H-3      -3.63E+02    3.59E+02    l.25E+03 u WD         STJ       386425023 11/25/2015   Ac-228     -7.86E-01    2.77E+OO    6.76E+OO u WD         STJ       386425023 11/25/2015  Ag-108m     -3.78E-01    4.37E-01    l.37E+OO u WD         STJ       386425023 11125/2015  Ag-llOm      6.52E-01    5.02E-01    l.49E+OO u WD         STJ       386425023 11/25/2015   Ba-140      4.00E+OO    4.05E+OO    8.31E+OO u WD         STJ       386425023 11125/2015    Be-7       4.23E+OO    4.18E+OO    l.36E+Ol u WD         STJ       386425023 11125/2015   BETA        9.19E-01    1.12E+OO    3.42E+OO u WD         STJ       386425023 11125/2015   Ce-141      8.91E-01    9.05E-01    2.88E+OO u WD         STJ       386425023 11125/2015   Ce-144     -l.06E+OO    3.35E+OO    l.07E+Ol u D-97

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE     STATION       LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WD        STJ       386425023 11/25/2015   Co-57        7.57E-02    4.81E-Ol    l.39E+OO u WD        STJ       386425023 11/25/2015   Co-58        2.28E-Ol    4.40E-Ol    l.48E+OO u WD        STJ       386425023 11/25/2015   Co-60        2.42E+OO    8.91E-Ol    l.83E+OO UI WD        STJ       386425023 11/25/2015    Cr-51      -3.16E-Ol    4.65E+OO    l.55E+Ol u WD        STJ       386425023 11/25/2015   Cs-134       8.77E-Ol    5.53E-Ol    l.81E+OO u WD        STJ       386425023 11/25/2015   Cs-137       l.90E+OO    l.25E+OO    l.57E+OO UI WD        STJ       386425023 11/25/2015    Fe-59        7.53E-Ol   l.03E+OO    3.39E+OO u WD        STJ       386425023 11/25/2015    1-131       2.60E+OO    l.14E+OO    3.38E+OO u WD        STJ       386425023 11/25/2015    K-40       -5.52E+OO    9.27E+OO    2.14E+Ol u WD        STJ       386425023 11/25/2015   La-140       l.37E+OO    8.73E-Ol    2.92E+OO u WD        STJ       386425023 11/25/2015   Mn-54       -7.81E-Ol    4.65E-01    l.33E+OO u WD        STJ       386425023 11/25/2015   Nb-95         3.68E-Ol   4.76E-Ol    l.57E+OO u WD        STJ       386425023 11/25/2015   Ru-103      -8.30E-Ol    5.66E-Ol    l.66E+OO u WD        STJ       386425023 11/25/2015   Ru-106      -2.78E+OO    4.70E+OO    l.46E+Ol u WD        STJ       386425023 11/25/2015   Sb-124       l.07E+OO    l.lOE+OO    3.74E+OO u WD        STJ       386425023 11/25/2015   Sb-125      -3.22E-01    l.26E+OO    4.llE+OO u WD        STJ       386425023 11/25/2015    Se-75      -8.SOE-01    6.76E-Ol    2.llE+OO u WD        STJ       386425023 11/25/2015   Th-228       l.52E+OO    l.67E+OO    3.40E+OO u WD        STJ       386425023 11/25/2015   Zn-65       -l.36E+OO    9.95E-Ol    2.87E+OO u WD        STJ       386425023 11/25/2015    Zr-95       8.02E-01    2.25E+OO    2.83E+OO u WD        STJ       386425024 11/25/2015    1-131        3.60E-Ol   2.68E-Ol    7.93E-Ol u WD        LTW       386425025 11/25/2015   Ac-228      -6.l lE-01   3.42E+OO    7.08E+OO u WD        LTW       386425025 11/25/2015  Ag-108m      -3.00E-01    4.60E-Ol    1.43E+OO u WD        LTW       386425025 11/25/2015  Ag-llOm      -7.91E-01    5.32E-Ol    l.57E+OO u WD        LTW       386425025 11/25/2015   Ba-140       l.77E+OO    2.92E+OO    9.83E+OO u WD        LTW       386425025 11/25/2015    Be-7       -2.llE+OO    4.64E+OO    l.54E+Ol u WD        LTW       386425025 11/25/2015   BETA        -l.71E+OO    9.20E-Ol    3.34E+OO u WD        LTW       386425025 11/25/2015   Ce-141       2.24E+OO    l.69E+OO    3.75E+OO u WD        LTW       386425025 11/25/2015   Ce-144       4.09E+OO    4.llE+OO    l.36E+Ol u WD        LTW       386425025 11/25/2015   Co-57       -l.67E-Ol    5.21E-Ol    l.74E+OO u WD        LTW       386425025 11/25/2015   Co-58       -7.48E-02    5.32E-01    l.73E+OO u WD        LTW       386425025 11/25/2015   Co-60       -2.86E-01    5.37E-01    l.64E+OO u
 . WD        LTW       386425025 11/25/2015    Cr-51       6.13E+OO    5.98E+OO    l.87E+Ol u WD        LTW       386425025 11/25/2015   Cs-134      -3.18E-Ol    5.69E-Ol    l.81E+OO u WD        LTW       386425025 11/25/2015   Cs-137        8.84E-Ol   5.58E-Ol    l.81E+OO U WD        LTW       386425025 11/25/2015    Fe-59      -l.23E-Ol    1.03E+OO    3.44E+OO U WD        LTW       386425025 11/25/2015    1-131      -1.29E+OO    1.31E+OO    3.47E+OO U WD        LTW       386425025 11/25/2015    K-40        1.33E+Ol    1.22E+Ol    l.71E+Ol U WD        LTW       386425025 11/25/2015   La-140      -6.18E-01    1.02E+OO    3.21E+OO U WD        LTW       386425025 11/25/2015   Mn-54       -7.94E-01    5.20E-01    l.48E+OO U WD        LTW       386425025 11/25/2015   Nb-95       -l.ISE-01    5.50E-01    l.79E+OO U WD        LTW       386425025 11/25/2015   Ru-103      -l.09E+OO    6.46E-01    l.91E+OO U WD        LTW       386425025 11/25/2015   Ru-106       2.86E+OO    4.60E+OO    l.54E+Ol U WD        LTW       386425025 11/25/2015   Sb-124        1.27E-01   1.45E+OO    4.75E+OO U WD        LTW       386425025 11/25/2015   Sb-125        3.42E-01   l.50E+OO    4.81E+OO U WD        LTW       386425025 11/25/2015    Se-75       -3.02E-01   7.92E-Ol    2.57E+OO U WD        LTW       386425025 11/25/2015   Th-228      -l.73E+OO    1.60E+OO    3.76E+OO U WD        LTW       386425025 11/25/2015   Zn-65        7.31E-01    l.23E+OO    3.65E+OO U WD        LTW       386425025 11/25/2015    Zr-95      -2.32E-Ol    9.67E-Ol    3.15E+OO U WD        LTW       386425026 11/25/2015    1-131      -4.23E-02    2.52E-01    8.39E-01 u D-98

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                        CONC     STD.DEV.       MDC      FLAGS TYPE       STATION      LSN       DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WD           STJ     387341023  12/9/2015    Ac-228      -1.00E+Ol    5.25E+OO    l.21E+Ol u WD           STJ     387341023  12/9/2015   Ag-108m       l.27E+OO    l.IOE+OO    3.71E+OO u WD           STJ     387341023  12/9/2015   Ag-llOm      -5.56E-Ol    l.IOE+OO    3.56E+OO u WD           STJ     387341023  12/9/2015    Ba-140       3.89E-Ol    5.75E+OO    l.87E+Ol u WD.          STJ     387341023  12/9/2015     Be-7        8.32E-Ol    9.91E+OO    3.25E+Ol u WD           STJ     387341023  12/9/2015    BETA         2.28E+OO    l.04E+OO    3.07E+OO u WD           STJ     387341023  12/9/2015    Ce-141      -6.60E+OO    2.77E+OO    6.22E+OO u WD           STJ     387341023  12/9/2015    Ce-144       4.3IE-Ol    8.56E+OO    2.77E+Ol u WD           STJ     387341023  12/9/2015    Co-57       -l.60E+OO    l.17E+OO    3.40E+OO u WD           STJ     387341023  12/9/2015    Co-58       -l.67E+OO    l.30E+OO    3.70E+OO u WD           STJ     387341023  12/9/2015    Co-60        2.26E-Ol    l.35E+OO    3.84E+OO u WD           STJ     387341023  12/9/2015     Cr-51       9.33E-01    l.03E+Ol    3.46E+Ol u WD           STJ     387341023  12/9/2015    Cs-134      -2.83E-01    l.33E+OO    4.38E+OO u WD           STJ     387341023  12/9./2015   Cs-137      -l.55E-01    l.32E+OO    4.49E+OO u WD           STJ     387341023  12/9/2015     Fe-59       3.94E-01    2.36E+OO    7.8IE+OO u WD           STJ     387341023  12/9/2015     1-131      -2.71E+OO    2.18E+OO    6.41E+OO u WD           STJ     387341023  12/9/2015     K-40       -2.74E+Ol    2.07E+Ol    5.IOE+Ol u WD           STJ     387341023  12/9/2015    La-140      -5.93E-01    l.90E+OO    6.08E+OO u WD           STJ     387341023  12/9/2015    Mn-54       -4.28E-01    l.17E+OO    3.20E+OO u WD           STJ     387341023  12/9/2015    Nb-95        3.33E-03    l.22E+OO    4.IOE+OO u WD           STJ     387341023  12/9/2015    Ru-103      -4.23E-02    l.25E+OO    4.05E+OO u WD           STJ     387341023  12/9/2015    Ru-106       l.33E+Ol    l.05E+Ol    3.56E+Ol u WD           STJ     387341023  12/9/2015    Sb-124       9.09E-01    2.54E+OO    8.77E+OO u WD           STJ     387341023  12/9/2015    Sb-125      -3.89E-01    2.97E+OO    9.67E+OO u WD           STJ     387341023  12/9/2015     Se-75      -l.07E+OO    l.44E+OO    4.58E+OO u WD           STJ     387341023  12/9/2015    Th-228       5.03E+OO    3.74E+OO    8.89E+OO u WD           STJ     387341023  12/9/2015    Zn-65       -5.09E+OO    3.18E+OO    6.0IE+OO u WD           STJ     387341023  12/9/2015     Zr-95       4.06E+OO    2.27E+OO    7.87E+OO u WD         . STJ     387341024  12/9/2015     I-131      -1.49E-01     l.98E-01   6.96E-01 u WD           LTW     387341025  12/9/2015    Ac-228      -7.02E+OO    5.86E+OO    l.61E+Ol u WD           LTW     387341025  12/9/2015   Ag-108m      -I.68E+OO    l.19E+OO    3.45E+OO u WD           LTW     387341025  12/9/2015   Ag-llOm      -1.05E-01    l.16E+OO    3.79E+OO u WD           LTW     387341025  12/9/2015    Ba-140       6.31E-01    5.80E+OO    l.93E+Ol u WD           LTW     387341025  12/9/2015     Be-7        2.27E+Ol    l.27E+Ol    4.20E+Ol u WD           LTW     387341025' 12/9/2015    BETA         1.52E+OO    l.12E+OO    3.47E+OO u WD           LTW     387341025  12/9/2015    Ce-141      -5.61E-01    2.62E+OO    7.30E+OO u WD           LTW     387341025  12/9/2015    Ce-144       2.21E+Ol    9.00E+OO    2.63E+Ol u WD           LTW     387341025  12/9/2015    Co-57       -2.75E+OO    l.25E+OO    3.27E+OO u WD           LTW     387341025  12/9/2015    Co-58        l.45E+OO    1.24E+OO    4.23E+OO u WD           LTW     387341025  12/9/2015    Co-60        l.96E+OO    l.04E+OO    4.77E+OO u WD           LTW     387341025  12/9/2015     Cr-51       9.99E-01    l.26E+Ol    4.07E+Ol u WD           LTW     387341025  12/9/2015    Cs-134       1.0IE+OO    l.32E+OO    4.36E+OO u WD           LTW     387341025  12/9/2015    Cs-137      -4.32E-01    1.37E+OO    4.38E+OO u WD      \. LTW       387341025  12/9/2015     Fe-59      -l.05E+OO    2.50E+OO    7.99E+OO u WD           LTW     387341025  12/9/2015     I-131       l.23E+OO    2.54E+OO    7.97E+OO u WD           LTW     387341025  12/9/2015     K-40        1.42E+Ol    l.52E+Ol    3.55E+Ol u WD           LTW     387341025  12/9/2015    La-140       l.15E+OO    2.43E+OO    8.18E+OO u WD           LTW     387341025  12/9/2015    Mn-54        8.61E-01    l.IOE+OO    3.74E+OO u WD           LTW     387341025  12/9/2015    Nb-95*       2.05E+OO    l.23E+OO    4.19E+OO u WD           LTW     387341025  12/9/2015    Ru-103      -6.31E-01    l.41E+OO    4.56E+OO u D-99

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN       DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD         LTW       387341025  12/9/2015   Ru-106        3.19E-01   9.31E+OO    3.07E+Ol u WD         LTW       387341025  12/9/2015   Sb-124      -4.lOE+OO    3.05E+OO    7.53E+OO u WD         LTW       387341025  12/9/2015   Sb-125        4.40E-01   3.21E+OO    1.08E+Ol u WD         LTW       387341025  12/9/2015    Se-75        l.19E+OO   1.74E+OO    5.71E+OO u WD         LTW       387341025  12/9/2015   Th-228       5.97E+OO    3.55E+OO    8.96E+OO u WD         LTW       387341025  12/9/2015    Zn-65       -3.48E-01   2.64E+OO    8.69E+OO u WD         LTW       387341025  12/9/2015    Zr-95       2.64E+OO    2.12E+OO    7.26E+OO u WD         LTW       387341026  12/9/2015    1-131       -6.66E-02    l.89E-01   6.41E-01 u WD         STJ       388145023 12/23/2015   Ac-228      -2.97E+OO    3.35E+OO    7.06E+OO u WD         STJ       388145023 12/23/2015  Ag-108m        3.60E-01   4.54E-01    1.50E+OO u WD         STJ       388145023 12/23/2015  Ag-llOm        4.72E-01   5.07E-01    1.65E+OO u WD         STJ       388145023 12/23/2015   Ba-140       5.82E+OO    2.96E+OO    9.02E+OO u WD         STJ       388145023 12/23/2015    Be-7       -2.55E+OO    4.49E+OO    l.45E+Ol u WD         STJ       388145023 12/23/2015   BETA         2.46E+OO    1.1 IE+OO   2.92E+OO u WD         STJ       388145023 12/23/2015   Ce-141       2.15E+OO    l.56E+OO    3.15E+OO u WD         STJ       388145023 12/23/2015   Ce-144      -1.91E+OO    3.66E+OO    l.16E+Ol u WD         STJ       388145023 12/23/2015   Co-57         6.14E-01   5.21E-Ol    1.64E+OO u WD         STJ       388145023 12/23/2015   Co-58       -2.50E-01    5.06E-01    1.59E+OO u WD         STJ       388145023 12/23/2015   Co-60        8.28E-01    6.81E-Ol    1.60E+OO u WD         STJ       388145023 12/23/2015    Cr-51      -1.80E+OO    5.40E+OO    l.62E+Ol u WD         STJ       388145023 12/23/2015   Cs-134        7.06E-01   5.82E-01    l.86E+OO u WD         STJ       388145023 12/23/2015   Cs-137      -9.98E-01    5.89E-01    l.67E+OO u WD         STJ       388145023 12/23/2015    Fe-59      -8. lOE-03   9.48E-01    3.15E+OO u WD         STJ       388145023 12/23/2015    1-131      -4.12E-01    9.30E-01    3.04E+OO u WD         STJ       388145023 12/23/2015    K-40        3.97E+OO    9.32E+OO    2.21E+Ol u WD         STJ       388145023 12/23/2015   La-140       ~7.50E-01   9.38E-01    2.92E+OO u WD         STJ       388145023 12/23/2015   Mn-54       -3.08E-01    4.80E-01    l.57E+OO u WD         STJ       388145023 12/23/2015   Nb-95        6.33E-01    5.33E-01    l.71E+OO u WD         STJ       388145023 12/23/2015   Ru-103        9.28E-02   5.67E-01    l.87E+OO u WD         STJ       388145023 12/23/2015   Ru-106       2.36E-02    4.63E+OO    l.51E+Ol u WD         STJ       388145023 12/23/2015   Sb-124      -1.55E+OO    l.40E+OO    4.19E+OO u WD         STJ       388145023 12/23/2015   Sb-125        l.34E-01   i.57E+OO    4.51E+OO u WD         STJ       388145023 12/23/2015    Se-75      -8.13E-01    7.07E-01    2.24E+OO u WD         STJ       388145023 12/23/2015   Th-228       6.39E-01    1.49E+OO    3.40E+OO u WD         STJ       388145023 12/23/2015   Zn-65       -7.76E-02    9.96E-01    3.30E+OO u WD         STJ       388145023 12/23/2015    Zr-95       l.18E+OO    9.62E-01    3.04E+OO u WD         STJ       388145024 12/23/2015    I-131       3.55E-01    2.57E-01    7.55E-01 u WD         LTW       388145025 12/23/2015   Ac-228       5.89E+OO    2.18E+OO    6.06E+OO u WD         LTW       388145025 12/23/2015  Ag-108m       8.15E-01    6.09E-01    l.28E+OO u WD         LTW       388145025 12/23/2015  Ag-llOm      -5.79E-01    4.03E-01    l.21E+OO u WD         LTW       388145025 12/23/2015   Ba-140       1.42E+OO    2.27E+OO    7.34E+OO u WD         LTW       388145025 12/23/2015    Be-7        3.06E+OO    3.78E+OO    l.23E+Ol u WD         LTW       388145025 12/23/2015   BETA         l.43E+OO    8.44E-01    2.30E+OO u WD         LTW       388145025 12/23/2015   Ce-141       5.15E-01    1.17E+OO    2.58E+OO u WD
* LTW       388145025 12/23/2015   Ce-144       l.97E+OO    3.04E+OO    9.76E+OO u WD         LTW       388145025 12/23/2015   Co-57        6.37E-02    3.99E-01    l.29E+OO u WD         LTW       388145025 12/23/2015   Co-58       -8.21E-02    4.15E-01    l.36E+OO u WD         LTW       388145025 12/23/2015   Co-60       -2.09E-01    4.14E-01    l.34E+OO u WD         LTW       388145025 12/23/2015    Cr-51       4.24E+OO    4.32E+OO    1.42E+Ol u WD         LTW       388145025 12/23/2015   Cs-134       2.07E-02    4.47E-01    l.48E+OO u D-100

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                  -- CONC       STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WD        LTW        388145025 12/23/2015   Cs-137       -3.37E-01   4.39E-Ol    l.4IE+OO u WD        LTW        388145025 12/23/2015    Fe-59        2.08E+OO   l.16E+OO    3.20E+OO u WD        LTW        388145025 12/23/2015    I-131       -7.12E-01   8.26E-01    2.6IE+OO u WD        LTW        388145025 12/23/2015    K-40         6.2IE-Ol   7.94E+OO    2.0IE+Ol u WD        LTW        388145025 12/23/2015   La-140        3.55E-Ol   7.68E-Ol    2.55E+OO u WD        LTW        388145025 12/23/2015   Mn-54        -3.96E-Ol   4.28E-01    l.33E+OO u WD        LTW        388145025 12/23/2015   Nb-95         4.22E-Ol   4.5IE-Ol    l.SOE+OO u WD        LTW        388145025 12/23/2015   Ru-103        2.45E-Ol   5.43E-Ol    l.54E+OO u WD        LTW        388145025 12/23/2015   Ru-106       -l.53E+OO   3.72E+OO    l.23E+Ol u WD        LTW        388145025 12/23/2015   Sb-124       -6.64E-01   l.12E+OO    3.50E+OO u WD        LTW        388145025 12/23/2015   Sb-125        7.15E-02   l.36E+OO    3.87E+OO u WD        LTW        388145025 12/23/2015    Se-75       -9.16E-01   6.32E-Ol    l.94E+OO u WD        LTW        388145025 12/23/2015   Th-228        9.16E-01   l.55E+OO    2.64E+OO u WD        LTW        388145025 12/23/2015   Zn-65        -1.0IE+OO   9.47E-Ol    2.82E+OO u WD        LTW        388145025 12/23/2015    Zr-95       -2.4IE+OO   l.28E+OO    2.35E+OO u WD        LTW        388145026 12/23/2015    I-131       -1.19E-01   2.30E-01    7.89E-01 u D-101

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC      STD.DEV.      MDC      FLAGS TYPE      STATION        LSN       DATE      NUCLIDE          (pCi/L)     (pCi/L)   (pCi/L)
WG         W-1        365519001  1/19/2015    Ac-228       l.03E+Ol     6.74E+OO   l.84E+Ol u WG         W-1        365519001  1119/2015   Ag-108m      -l.15E-Ol     l.OSE+OO   3.55E+OO u WG         W-1        365519001  1119/2015   Ag-llOm      -8.74E-Ol     l.22E+OO   3.67E+OO u WG         W-1        365519001  1/19/2015    Ba-140      -2.71E+OO     l.49E+OO   2.85E+OO u WG         W-1        365519001  1/19/20_15    Be-7       -3.16E+OO     9.26E+OO   2.96E+Ol u WG         W-1        365519001  1119/2015    Ce-141      -6.55E+OO     2.90E+OO   6.86E+OO u WG         W-1        365519001  1/19/2015    Ce-144      ~I.62E+OO     9.71E+OO   3.14E+Ol u WG         W-1        365519001  1/19/2015    Co-57        l.40E+OO     l.32E+OO   4.28E+OO u WG         W-1        365519001  1/19/2015    Co-58       -7.28E-Ol     l.22E+OO   3.90E+OO u WG         W-1        365519001  1119/2015    Co-60        9.7IE-Ol     l.31E+OO   4.52E+OO u WG         W-1        365519001  1/19/2015     Cr-51       4.20E-Ol     l.25E+Ol   4.19E+Ol u WG         W-1        365519001 1/19/2015     Cs-134       l.04E+OO     l.26E+OO   4.40E+OO u WG         W-1        365519001 1/19/2015     Cs-137       2.08E+OO     1.31E+OO   4.4IE+OO u WG         W-1        365519001  1119/2015     Fe-59      -8.42E-01     2.26E+OO   6.0SE+OO u WG        W-1         365519001 J/19/2015       H-3       -3.14E+02     5.64E+02   l.90E+03 u WG         W-1        365519001  111912015     I-131      -3.38E-Ol     l.65E+OO   5.43E+OO u WG         W-1        365519001  1119/2015     K-40        2.23E+OO     l.43E+Ol   4.14E+Ol u WG         W-1        365519001  1119/2015    La-140      -2,7IE+OO     l.49E+OO   2.85E+OO u WG         W-1        365519001  1119/2015    Mn-54       -l.03E+OO     l.28E+OO   3.98E+OO u WG         W-1        365519001  1119/2015    Nb-95        5.35E-Ol     l.27E+OO   3.73E+OO u WG         W-1        365519001  1119/2015    Ru-103      -4.39E-Ol     l.28E+OO   4.09E+OO u WG         W-1        365519001  J/19/2015    Ru-106      -3.9IE-Ol     9.38E+OO   3.03E+Ol u WG         W-1        365519001  1/19/2015    Sb-124      -l.47E+OO     3.06E+OO   9.70E+OO u WG         W-1        365519001 1/19/2015     Sb-125      2.20E+OO      3.39E+OO   l.15E+Ol u WG        W-1         365519001 1/19/2015      Se-75       2.17E-Ol     l.69E+OO   5.73E+OO u WG         W-1        365519001 1/19/2015     Th-228       3.80E+OO     4.34E+OO   8.44E+OO u WG         W-1        365519001 1119/2015     Zn-65       -2.12E+OO     2.41E+OO   5.74E+OO u WG         W-1        365519001  1119/2015     Zr-95      -3.14E+OO     2.35E+OO   6.31E+OO u WG         W-2        365519002 1/19/2015     Ac-228      -6.78E+OO     6.93E+OO   2.IOE+Ol u WG         W-2        365519002  1119/2015   Ag-108m      -9.64E-Ol     l.56E+OO   4.87E+OO u WG         W-2        365519002  1119/2015   Ag-llOm      -l.34E+OO     l.37E+OO   4.07E+OO u WG         W-2        365519002 1/19/2015     Ba-140       l.14E+OO     l.95E+OO   6.76E+OO u WG         W-2        365519002  1119/2015     Be-7       -l.13E+Ol     l.38E+Ol   4.18E+Ol u WG         W-2        365519002  111912015    Ce-141       3.20E+OO     3.16E+OO   9.07E+OO u WG         W-2        365519002  1119/2015    Ce-144      -l.13E+Ol     l.32E+Ol   3.54E+Ol u WG         W-2        365519002 1/19/2015     Co-57        7.71E-Ol     l.49E+OO   4.69E+OO u WG         W-2      - 365519002 1119/2015     Co-58       -2.88E+OO     l.63E+OO   4.07E+OO u WG        W-2         365519002 1119/2015     Co-60        l.76E+OO   - L85E+OO    6.32E+OO u WG        W-2         365519002 1119/2015      Cr-51      -7.84E+OO     l.52E+Ol   4.65E+Ol u WG         W-2        365519002 1/19/2015     Cs-134       2.25E+OO     l.86E+OO   6.27E+OO u WG         W-2        365519002 1/19/2015     Cs-137       2.89E~Ol     l.54E+OO   5.llE+OO u WG         W-2        365519002 1119/2015      Fe-59       7.21E+OO     3.26E+OO   l.02E+Ol u WG         W-2        365519002 1/19/2015       H-3       -5.22E+02     5.52E+02   l.89E+03 u WG         W-2        365519002  1119/2015     1-131       2.31E+OO     2.20E+OO   7.31E+OO u WG         W-2        365519002  1/19/2015     K-40        8.15E+OO     l.98E+Ol   6.97E+Ol u WG         W-2        365519002  1119/2015    La-140       l.14E+OO     l.95E+OO   6.76E+OO u WG        W-2         365519002 1/19/2015     Mn-54       -5. l 7E-02   l.52E+OO   4.93E+OO u WG         W-2        365519002 1119/2015     Nb-95        l.72E+OO     2.21E+OO   5.93E+OO u WG         W-2        365519002 1119/2015     Ru-103       2.42E+OO     l.53E+QO   5.17E+OO u WG        W-2         365519002 1/19/2015     Ru-106       9.42E+OO     1.32E+Ol   4.47E+Ol u D-102

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                                END                       CONC    STD.DEV.       MDC      FLAGS TYPE     . STATION      LSN         DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG          W-2      36551.9002   1119/2015    Sb-124       5.83E+OO   3.76E+OO    l.34E+OI u WG          W-2      365519002    1/19/2015    Sb-125      -2.IOE+OO   4.67E+OO    l.48E+OI u WG          W-2      365519002    1/19/2015    Se-75        3.06E+OO   2.32E+OO    7.69E+OO u WG          W-2      365519002    1/19/2015    Th-228      -3.09E-02   3.89E+OO    1.15E+OI u WG          W-2      365519002    1/19/2015    Zn-65        6.69E+OO   3.84E+OO    1.19E+OI u WG          W-2      365519002    1/19/2015     Zr-95      -1.07E+OO   3.25E+OO    8.69E+OO u WG          W-3      365519003    1/20/2015    Ac-228       8.83E+OO   6.08E+OO    l.97E+OI u WG          W-3      365519003    1/20/2015   Ag-108m       l.36E+OO   l.29E+OO    4.43E+OO u WG          W-3      365519003    1/20/2015  Ag-llOm       -2.85E+OO   l.66E+OO    3.51E+OO u WG          W-3      365519003    1/20/2015    Ba-140       l.02E+OO   l.89E+OO    6.59E+OO u WG          W-3      365519003    1/20/2015     Be-7        4.16E+OO   l.20E+OI    3.58E+OI u WG          W-3      365519003    1/20/2015    Ce-141      -2.44E+OO   2.47E+OO    6.86E+OO u WG          W-3      365519003    1/20/2015    Ce-144        5.63E-01  9.34E+OO    3.08E+Ol u WG          W-3      365519003    1/20/2015    Co-57*      -1.64E+OO   1.27E+OO    3.64E+OO u WG          W-3      365519003    1/20/2015    Co-58       -1.21E+OO   1.09E+OO    3.03E+OO u WG          W-3      365519003    1/20/2015    Co-60       -l.92E+OO   1.70E+OO    4.81E+OO u WG          W-3      365519003    112012015     Cr-51       8.03E+OO   1.27E+Ol    3.73E+Ol u WG          W-3      365519003    1/20/2015    Cs-134      -9.09E-01   l.31E+OO    3.94E+OO u WG          W-3      365519003    1/20/2015    Cs-137        7.51E-01  1.97E+OO    4.41E+OO u WG          W-3      365519003    1/20/2015     Fe-59      -4.15E-01   2.65E+OO    8.68E+OO u WG          W-3      365519003    1/20/2015      H-3       -6.52E+02   5.56E+02    l.92E+03 u WG          W-3      365519003    1/20/2015     I-131        6.94E-01  1.65E+OO    5.43E+OO u WG          W-3      365519003    1/20/2015     K-40        3.23E+Ol   1.88E+Ol    4.40E+Ol u WG          W-3      365519003    1/20/2015    La-140       1.02E+OO   1.89E+OO    6.59E+OO u WG          W-3      365519003    1/20/2015    Mn-54       -6.05E-01   1.19E+OO    3.64E+OO u WG          W-3      365519003    1/20/2015    Nb-95        7.38E-01   1.46E+OO    4.67E+OO u WG          W-3      365519003    1/20/2015    Ru-103      -1.72E+OO   1.31E+OO    3.87E+OO u WG          W-3      365519003    1/20/2015    Ru-106      -6.SOE+OO   1.18E+OI    3.70E+Ol u WG          W-3      365519003    1/20/2015    Sb-124      -8.76E-01   3.08E+OO    8.32E+OO u WG          W-3      365519003    1/20/2015    Sb-125       1.24E+OO   3.83E+OO    1.24E+OI u WG          W-3      365519003    1/20/2015     Se-75       2.18E+OO   1.88E+OO    6.27E+OO u WG          W-3      365519003    1/20/2015    Th-228       3.34E+OO   3.21E+OO    8.55E+OO u WG          W-3      365519003    1/20/2015    Zn-65       -3.03E+OO   3.05E+OO    7.24E+OO u WG          W-3      365519003    1/20/2015     Zr-95       1.12E+OO   2.08E+OO    7.03E+OO u WG          W-4      365519004    1/19/2015    Ac-228      -7.89E+OO   5.61E+OO    1.60E+OI u WG          W-4      365519004    1/19/2015   Ag-108m        8.39E-OI  1.25E+OO    4.20E+OO u WG          W-4      365519004    1/19/2015   Ag-llOm        l.37E-03  1.22E+OO    4.08E+OO u WG          W-4      365519004    1/19/2015    Ba-140      -2.30E+OO   2.02E+OO    5.51E+OO u WG          W-4      365519004    1/19/2015     Be-7       -4.0IE+OO   1.21E+OI    3.84E+OI u WG          W-4      365519004    1/19/2015    Ce-141       1.25E+OO   2.16E+OO    7.28E+OO u WG          W-4      365519004    1/19/2015    Ce-144       8.52E+OO   9.30E+OO    3.06E+OI u WG          W-4      365519004    1/19/2015     Co-57      -1.42E+OO   l.30E+OO    3.38E+OO u WG          W-4      365519004    1/19/2015     Co-58       -2.12E-OI  1.29E+OO    4.19E+OO u WG          W-4      365519004    1/19/2015     Co-60       1.56E+OO   1.50E+OO    5.04E+OO u WG          W-4      365519004    1/19/2015     Cr-51      -9.17E+OO   1.22E+Ol    3.86E+Ol u WG          W-4      365519004    1/19/2015    Cs-134       -l.32E-01  1.26E+OO    4.13E+OO u WG          W-4      365519004    1119/2015    Cs-137      -4.04E+OO   1.91E+OO    4.81E+OO u WG          W-4      365519004  . 1/19/2015     Fe-59       -5.99E-OI  2.22E+OO    5.85E+OO u WG          W-4      365519004    1/19/2015      H-3     * -1.03E+02   5.79E+02    1.92E+03 u WG          W-4      365519004    1/19/2015     I-131       2.29E+OO   1.95E+OO    6.54E+OO u D-103

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-4       365519004 1/19/2015    K-40        5.92E+OO    l.81E+Ol    6.50E+Ol u WG         W-4       365519004 1/19/2015   La-140      -2.30E+OO    2.02E+OO    5.51E+OO u WG         W-4       365519004 1/19/2015   Mn-54       -l.59E+OO    1.26E+OO    3.53E+OO u WG         W-4       365519004 1/19/2015   Nb-95        l.62E+OO    l.34E+OO    O.OOE+OO UI WG         W-4       365519004 1/19/2015   Ru-103        1.90E-01   l.29E+OO    4.22E+OO u WG         W-4       365519004 1/19/2015   Ru-106      -l.31E+OO    l.16E+Ol    3.89E+Ol u WG         W-4       365519004 1/19/2015   Sb-124       l.15E+OO    3.36E+OO    l.13E+Ol u WG         W-4       365519004 1/19/2015   Sb-125        1.25E-Ol   3.27E+OO    1.07E+Ol u WG         W-4       365519004 1/19/2015    Se-75       2.87E-02    l.63E+OO    5.52E+OO u WG         W-4       365519004 1/19/2015   Th-228       8.00E+OO    3.61E+OO    7.92E+OO WG         W-4       365519004 1/19/2015    Zn-65       4.04E+OO    2.58E+OO    8.46E+OO u WG         W-4       365519004 1/19/2015    Zr-95      -1.IOE+OO    2.36E+OO    7.53E+OO u WG         W-5       365519005 1/19/2015   Ac-228      -3.51E+OO    5.40E+OO    l.67E+OI u WG         W-5       365519005 1/19/2015  Ag-108m       1.02E+OO    l.IOE+OO    3.72E+OO u WG         W-5       365519005 1/19/2015  Ag-JI Om     -1.04E-OI    l.02E+OO    3.22E+OO u WG         W-5       365519005 1/19/2015   Ba-140      -2.51E+OO    l.67E+OO    4.16E+OO u WG         W-5       365519005 1/19/2015    Be-7        l.62E+OI    1.41E+Ol    3.36E+OI u WG         W-5       365519005 1/19/2015   Ce-141       6.76E-OI    2.llE+OO    6.85E+OO u WG         W-5       365519005 1/19/2015   Ce-144      -4.00E+OO    1.00E+OI    2.81E+OI u WG         W-5       365519005 1/19/2015   Co-57       -7.84E-01    1.12E+OO    3.47E+OO u WG         W-5       365519005 1/19/2015   Co-58        5.19E-OI    1.07E+OO    3.69E+OO u WG         W-5       365519005 1/19/2015   Co-60       -5.72E-OI    l.38E+OO    4.23E+OO u WG         W-5       365519005 1/19/2015    Cr-51       5.79E+OO    9.93E+OO    3.38E+Ol u WG         W-5       365519005 1/19/2015   Cs-134       6.48E-OI    l.33E+OO    4.56E+OO u WG         W-5       365519005 1/19/2015   Cs-137      -1.66E+OO    1.30E+OO    3.41E+OO u WG         W-5       365519005 1/19/2015   Fe-59       -l.54E+OO    2.32E+OO    7.0lE+OO u WG         W-5       365519005 1/19/2015     H-3       -2.74E+02    5.64E+02    1.89E+03 u WG         W-5       365519005 1/19/2015    1-131       6.46E-01    1.49E+OO    5.03E+OO u WG         W-5       365519005 1/19/2015    K-40        4.04E+OO    2.22E+OI    4.llE+OI u WG         W-5       365519005 1/19/2015   La-140      -2.51E+OO    1.67E+OO    4.16E+OO u WG         W-5       365519005 1/19/2015   Mn-54        l.IOE+OO    LllE+OO     3.89E+OO u WG         W-5       365519005 1/19/2015   Nb-95        1.55E+OO    1.23E+OO    4.29E+Ob u WG         W-5       365519005 1/19/2015   Ru-103      -6.97E-Ol    1.44E+OO    3.98E+OO u WG         W-5       365519005 1/19/2015   Ru-106       3.12E+OO    1.08E+OI    3.54E+Ol u WG         W-5       365519005 1/19/2015   Sb-124       2.83E+OO    2.25E+OO    8.47E+OO u WG         W-5       365519005 1/19/2015   Sb-125       4.27E+OO    3.54E+OO    l.19E+OI u WG         W-5       365519005 1/19/2015    Se-75       8.68E-01    1.55E+OO    5.30E+OO u WG         W-5       365519005 1/19/2015   Th-228       3.20E+OO    3.47E+OO    6.40E+OO u WG         W-5       365519005 1/19/2015   Zn-65        4.90E+OO    2.56E+OO    8.48E+OO u WG         W-5       365519005 1/19/2015    Zr-95       1.65E+OO    1.67E+OO    5.94E+OO u WG         W-6       365519006 1/19/2015   Ac-228       3.78E+OO    6.60E+OO    2.15E+OI u WG         W-6       365519006 1/19/2015  Ag-108m       7.56E-01    1.06E+OO    3.60E+OO u WG         W-6       365519006 1/19/2015  Ag-llOm      -l.31E+OO    1.28E+OO    3.87E+OO u WG         W-6       365519006 1/19/2015   Ba-140       2.34E+OO    2.03E+OO    7.12E+OO u WG         W-6       365519006 1/19/2015    Be-7       -l.41E+OI    1.16E+Ol    3.31E+OI u WG         W-6       365519006 1/19/2015   Ce-141       3.64E+OO    3.12E+OO    8.99E+OO u WG        W-6        365519006 1/19/2015   Ce-144      -1.54E+Ol    l.18E+Ol    3.42E+Ol u WG         W-6       365519006 1/19/2015   Co-57        l.20E+OO    l.53E+OO    4.96E+OO u WG         W-6       365519006 1/19/2015   Co-58       -9.71E-Ol    l.41E+OO    4.40E+OO u WG         W-6       365519006 1/19/2015   Co-60        l.33E+OO    1.50E+OO    5.21E+OO u D-104

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.      MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-6       365519006 1119/2015     Cr-51      1.48E+Ol    l.39E+Ol    4.66E+Ol u WG         W-6       365519006 1119/2015    Cs-134     -1.35E-01    l.39E+OO    4.60E+OO u WG         W-6       365519006 1119/2015    Cs-137      1.27E+OO    1.49E+OO    5.19E+OO u WG         W-6       365519006 1119/2015     Fe-59     -7.95E-01    2.48E+OO    7.82E+OO u WG         W-6       365519006 1119/2015      H-3      -3.02E+02    5.69E+02    1.92E+03 u WG         W-6       365519006 1119/2015     1-131     -1.IOE+OO    2.00E+OO    6.34E+OO u WG         W-6       365519006 1119/2015     K-40      -1.42E+OI    2.35E+Ol    6.71E+OI u WG         W-6       365519006 1119/2015    La-140      2.34E+OO    2.03E+OO    7.12E+OO u WG         W-6       365519006 1119/2015    Mn-54       6.00E-01    1.53E+OO    4.58E+OO u WG         W-6       365519006 1119/2015    Nb-95       3.95E+OO    1.90E+OO    5.80E+OO u WG         W-6       365519006 1/19/2015   Ru-103       9.42E-02    1.40E+OO    4.57E+OO u WG         W-6       365519006 1119/2015   Ru-106       6.55E+OO    1.22E+OI    4.02E+OI u WG         W-6       365519006 1/19/2015    Sb-124     -1.43E+OO    2.72E+OO    8.25E+OO u WG         W-6       365519006 1119/2015    Sb-125      2.25E+OO    3.95E+OO    1.32E+Ol u WG         W-6       365519006 1119/2015     Se-75      2.27E+OO    2.14E+OO    7.20E+OO u WG         W-6       365519006 1/19/2015    Th~228      3.37E+OO    3.65E+OO    9.77E+OO u WG         W-6       365519006 1/19/2015    Zn-65       1.00E+OO    3.15E+OO    9.25E+OO u WG         W-6       365519006 1119/2015     Zr-95      5.49E-OI    2.20E+OO    7.48E+OO u WG         W-7       365519007 1116/2015   Ac-228       1.37E+OI    8.51E+OO    2.53E+OI u WG         W-7       365519007 1/16/2015  Ag-108m      -1.59E+OO    1.28E+OO    3.53E+OO u WG         W-7       365519007 1/16/2015  Ag-llOm       2.77E-OI    1.44E+OO    4.82E+OO u WG         W-7       365519007 1116/2015    Ba-140       l.14E-OI   2.IOE+OO    7.02E+OO u WG         W-7       365519007 1/16/2015     Be-7      -7.91E+OO    l.37E+Ol    4.18E+Ol u WG         W-7       365519007 1116/2015    Ce-141      2.75E+OO    2.57E+OO    8.45E+OO u WG         W-7       365519007 1/16/2015    Ce-144     -3.57E-OI    1.04E+OI    3.21E+OI u WG         W-7       365519007 1116/2015    Co-57      -1.48E+OO    l.32E+OO    3.95E+OO u WG         W-7       365519007 1/16/2015    Co-58      -9.98E-OI    1.48E+OO    4.41E+OO u WG         W-7       365519007 1116/2015    Co-60      -1.IIE+OO    1.62E+OO    4.73E+OO u WG         W-7       365519007 1/16/2015     Cr-51      5.29E-OI    1.42E+OI    4.71E+OI u WG         W-7       365519007 1/16/2015    Cs-134     -3.15E-OI    1.42E+OO    4.50E+OO u WG         W-7       365519007 1/16/2015    Cs-137      1.59E+OO    1.79E+OO    6.13E+OO u WG         W-7       365519007 1116/2015     Fe-59     -2.97E+OO    3.94E+OO    9.83E+OO u WG         W-7       365519007 1/16/2015      H~3      -8.66E+02    5.40E+02    1.90E+03 u WG         W-7       365519007 1/16/2015     I-!31      4.37E+OO    2.65E+OO    8.12E+OO u WG         W-7       365519007 1116/2015     K-40      -3.24E+OI    2.18E+OI    6.53E+Ol u WG         W-7       365519007 1116/2015    La-140       l.14E-01   2.IOE+OO    7.02E+OO u WG         W-7       365519007 1116/2015    Mn-54       2.81E+OO    1.43E+OO    3.88E+OO u WG         W-7       365519007 1116/2015    Nb-95       l.37E+OO    1.38E+OO    4.80E+OO u WG         W-7       365519007 1/16/2015    Ru-103     -7.ISE-01    l.65E+OO    4.62E+OO u WG         W-7       365519007 1/16/2015    Ru-106      1.64E+OI    1.81E+Ol    4.86E+OI u WG         W-7       365519007 1116/2015    Sb-124      4.02E+OO    3.56E+OO    l.31E+OI u WG         W-7       365519007 1/16/2015    Sb-125      4.05E-OI    4.19E+OO    l.36E+OI u WG         W-7       365519007 1/16/2015     Se-75      2.15E+OO    2.25E+OO    7.64E+OO u WG         W-7       365519007 1/16/2015    Th-228      1.88E+OO    4.05E+OO    9.81E+OO u WG         W-7       365519007 1116/2015     Zn-65      3.13E+OO    3.16E+OO    1.02E+OI u WG         W-7       365519007 1/16/2015     Zr-95      2.04E-01    2.58E+OO    8.50E+OO u WG         W-8       365519008 1/20/2015    Ac-228     -4.43E+OO    6.87E+OO    2.18E+Ol u WG         W-8       365519008 1120/2015   Ag-108m     -2.54E+OO    1.45E+OO    3.71E+OO u WG         W-8       365519008 1/20/2015   Ag-llOm     -1.45E+OO    1.56E+OO    4.74E+OO u WG         W-8       365519008 1120/2015    Ba-140      4.27E+OO    2.27E+OO    7.73E+OO u D-105

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-8       365519008 1/20/2015    Be-7       -l.17E+OO    l.21E+Ol    3.87E+Ol u WG         W-8       365519008 1/20/2015   Ce-141       4.43E+OO    2.79E+OO    8.90E+OO u WG         W-8       365519008 1/20/2015   Ce-144      -8.56E+OO    l.23E+Ol    3.38E+Ol u WG         W-8       365519008 1/20/2015   Co-57       -3.70E-01    l.36E+OO    4.37E+OO u WG         W-8       365519008 1/20/2015   Co-58        4.09E-01    l.39E+OO    4.65E+OO u WG         W-8       365519008 1/20/2015   Co-60       -l.43E+OO    l.70E+OO    4.99E+OO u WG         W-8       365519008 1/20/2015    Cr-51       6.63E+OO    l.49E+Ol    4.44E+Ol u WG         W-8       365519008 1/20/2015   Cs-134       8.13E-01    l.80E+OO    6.08E+OO u WG         W-8       365519008 1/20/2015   Cs-137       4.46E-01    l.67E+OO    5.35E+OO u WG         W-8       365519008 1/20/2015    Fe-59       3.18E+OO    2.83E+OO    l.OOE+Ol u WG         W-8       365519008 1/20/2015     H-3       -2.67E+02    5.67E+02    l.90E+03 u WG         W-8       365519008 1120/2015    1-131      -3.28E+OO    2.19E+OO    5.14E+OO u WG         W-8       365519008 1/20/2015    K-40        3.84E+OO    2.15E+Ol    7.04E+Ol u WG         W-8       365519008 1120/2015   La-140       4.27E+OO    2.27E+OO    7.73E+OO u WG         W-8       365519008 1/20/2015   Mn-54        l.36E+OO    l.39E+OO    4.80E+OO u WG         W-8       365519008 1120/2015   Nb-95        l.61E+OO    l.82E+OO    5.45E+OO u WG         W-8       365519008 1120/2015   Ru-103      -2.09E+OO    l.71E+OO    4.84E+OO U*
WG         W-8       365519008 1/20/2015   Ru-106       l.51E+Ol    l.29E+Ol    4.51E+Ol u WG         W-8       365519008 1120/2015   Sb-124      -3.44E+OO    4.09E+OO    l.16E+Ol u WG         W-8       365519008 1/20/2015   Sb-125       2.73E+OO    4.50E+OO    l.50E+Ol u WG         W-8       365519008 1120/2015    Se-75      -4.83E-01    2.04E+OO    6.75E+OO u WG         W-8       365519008 1120/2015   Th-228        l.50E-01   3.31E+OO    9.13E+OO u WG         W-8       365519008 1/20/2015    Zn-65       l.74E+OO    2.65E+OO    8.41E+OO u WG         W-8       365519008 1120/2015    Zr-95       l.06E+OO    2.19E+OO    7.51E+OO u WG         W-9       365519009 1116/2015   Ac-228       l.63E+Ol    8.45E+OO    2.77E+Ol u WG         W-9       365519009 1116/2015  Ag-108m       2.43E+OO    l.60E+OO    5.24E+OO u WG         W-9       365519009 1116/2015  Ag-llOm      -5.67E-01    l.70E+OO    5.48E+OO u WG         W-9       365519009 1116/2015   Ba-140       4.88E+OO    2.78E+OO    9.91E+OO u WG         W-9       365519009 1116/2015    Be-7       -9.97E+OO    l.48E+Ol    4.50E+Ol u WG         W-9       365519009 1/16/2015   Ce-141      -4.66E-01    2.79E+OO    8.57E+OO u WG         W-9       365519009 1116/2015   Ce-144       5.61E+OO    l.12E+Ol    3.69E+Ol u WG         W-9       365519009 1/16/2015   Co-57       -2.97E-01    l.36E+OO    4.42E+OO u WG         W-9       365519009 1116/2015    Co-58       3.93E-01    l.65E+OO    5.45E+OO u WG         W-9       365519009 1/16/2015    Co-60       2.02E+OO    l.83E+OO    6.34E+OO u WG         W-9       365519009 1/16/2015    Cr-51      -3.18E+Ol    l.81E+Ol    4.19E+Ol u WG         W-9       365519009 1116/2015   Cs-134      -l.91E+OO    l.83E+OO    5.29E+OO u WG         W-9       365519009 1116/2015   Cs-137      -l.89E+OO    2.0lE+OO    6.0lE+OO u WG         W-9       365519009 1116/2015    Fe-59      -6.llE+OO    3.89E+OO    l.03E+Ol u WG         W-9       365519009 1/16/2015     H-3       -4.76E+02    5.52E+02    l.88E+03 u WG         W-9       365519009 1/16/2015    1-131      -2.17E+OO    2.98E+OO    9.32E+OO u WG         W-9       365519009 1116/2015    K-40        l.57E+Ol    2.82E+Ol    4.73E+Ol u WG         W-9       365519009 1116/2015   La-140       4.88E+OO    2.78E+OO    9.91E+OO u WG         W-9       365519009 1116/2015   Mn-54        l.14E+OO    l.45E+OO    4.90E+OO u WG         W-9       365519009 1116/2015   Nb-95       -2.73E+OO    2.00E+OO    5.88E+OO u WG         W-9       365519009 1/16/2015   Ru-103       l.09E+OO    l.65E+OO    5.68E+OO u WG         W-9       365519009 1/16/2015   Ru-106       9.03E+OO    l.57E+Ol    5.32E+Ol u WG         W-9       365519009 1116/2015   Sb-124       4.30E+OO    3.25E+OO    l.20E+Ol u WG         W-9       365519009 1/16/2015   Sb-125        l.82E-01   4.60E+OO    l.49E+Ol u WG         W-9       365519009 1/16/2015    Se-75       2.75E+OO    2.25E+OO    7.56E+OO u WG         W-9       365519009 1/16/2015   Th-228      -6.24E+OO    3.93E+OO    l.OOE+Ol u D-106

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC      FLAGS TYPE     STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG        W-9       365519009 1/16/2015    Zn-65      -2.54E+OO    3.00E+OO    7.05E+OO u WG        W-9       365519009 1/16/2015    Zr-95      -5.42E+OO    3.30E+OO    8.66E+OO u WG        W-10      365519010 1/16/2015   Ac-228       2.76E+OO    7.04E+OO    2.22E+Ol u WG        W-10      365519010 1/16/2015  Ag-108m      -8.84E-02    1.43E+OO    3.98E+OO u WG        W-10      365519010 1/16/2015  Ag-llOm       l.76E+OO    1.39E+OO    4.81E+OO u WG        W-10      365519010 1/16/2015   Ba-140      -3.47E+OO    2.75E+OO    7.29E+OO u WG        W-10      365519010 1/16/2015    Be-7        2.23E+OO    l.18E+Ol    4.02E+Ol u WG        W-10      365519010 1/16/2015   Ce-141       l.21E+OO    3.25E+OO    9.75E+OO u WG        W-10      365519010 1/16/2015   Ce-144       l.85E+Ol    l.13E+Ol    3.49E+Ol u WG        W-10      365519010 1/16/2015   Co-57        7.07E-01    1.32E+OO    4.52E+OO u WG        W-10      365519010 1/16/2015   Co-58       -1.14E+OO    1.62E+OO    4.95E+OO u WG        W-10      365519010 1/16/2015   Co-60        6.02E-01    1.22E+OO    4.27E+OO u WG        W-10      365519010 1/16/2015    Cr-51      -1.08E+Ol    1.49E+Ol    4.61E+Ol U WG        W-10      365519010 1/16/2015   Cs-134       2.06E+OO    1.40E+OO    4.92E+OO U WG        W-10      365519010 1/16/2015   Cs-137      -2.81E+OO    1.65E+OO    4.30E+OO U WG        W-10      365519010 1/16/2015    Fe-59       1.54E+OO    2.81E+OO    9.83E+OO U WG        W-10      365519010 1/16/2015     H-3        3.98E+02    6.00E+02    L92E+03  U WG        W-10      365519010 1/16/2015    1-131      -4.79E-01    2.22E+OO    7.05E+OO U
 .,WG        W-10      365519010 1/16/2015    K-40       -2.36E+Ol    1.69E+Ol    4.96E+Ol U WG        W-10      365519010 1/16/2015   La-140      -3.47E+OO    2.75E+OO    7.29E+OO U WG        W-10      365519010 1/16/2015   Mn-54        3.49E-01    1.31E+OO    4.36E+OO U WG        W-10      365519010 1/16/2015   Nb-95        2.25E-02    1.43E+OO    4.70E+OO U WG        W-10      365519010 1/16/2015   Ru-103       1.45E-01    1.54E+OO    4.55E+OO U WG        W-10      365519010 1/16/2015   Ru-106      -1.56E+Ol    1.39E+Ol    4.llE+Ol U WG        W-10      365519010 1/16/2015   Sb-124       l.55E+OO    3.61E+OO    1.24E+Ol U WG        W-10      365519010 1/16/2015   Sb-125       3.53E-01    3.57E+OO    l.15E+Ol U WG        W-10      365519010 1/16/2015    Se-75       8.63E-01    1.85E+OO    6.19E+OO U WG        W-10      365519010 1/16/2015   Th-228      -1.84E+OO    3.30E+OO    1.04E+Ol U WG        W-10      365519010 1/16/2015    Zn-65      -8.75E-01    3.00E+OO    8.27E+OO U WG        W-10      365519010 1/16/2015    Zr-95      -5.31E+OO    2.67E+OO    6.04E+OO U WG        W-11      365519011 1/16/2015   Ac-228       4.23E+OO    7.05E+OO    2.44E+Ol U WG        W-11      365519011 1/16/2015  Ag-108m      ~6.lOE-02    1.46E+OO    4.67E+OO U WG        W-11      365519011 1/16/2015  Ag-llOm       4.87E-04    1.40E+OO    4.62E+OO U WG        W-11      365519011 1/16/2015   Ba-140       1.61E+OO    1.77E+OO    6:61E+OO U WG        W-11      365519011 1/16/2015    Be-7        1.52E+Ol    l.45E+Ol    4.99E+Ol U WG        W-11      365519011 1/16/2015   Ce-141      -4.40E+OO    3.15E+OO    8.52E+OO U WG        W-11      365519011 1/16/2015   Ce-144      -3.19E+OO    1.13E+Ol    3.56E+Ol U WG        W-11      365519011 1/16/2015   Co-57        1.27E+OO    1.65E+OO    4.82E+OO U WG        W-11      365519011 1/16/2015   Co-58        1.43E+OO    1.88E+OO    6.33E+OO U WG        W-11      365519011 1/16/2015   Co-60        3.12E+OO    2.03E+OO    7.13E+OO U WG        W-11      365519011 1/16/2015    Cr-51       2.43E+Ol    1.68E+Ol    5.03E+Ol U WG        W-11      365519011 1/16/2015   Cs-134      -2.51E-01    l.63E+OO    5.21E+OO U WG        W-11      365519011 1/16/2015   Cs-137      -7.87E-01    l.72E+OO    5.37E+OO U WG        W-11      365519011 1/16/2015    Fe-59       1.84E+OO    3.05E+OO    l.06E+Ol U WG        W-11      365519011 1/16/2015     H-3       -4.55E+02    5.62E+02    l.91E+03 u WG        W-11      365519011 1/16/2015    1-131       1.92E+OO    2.87E+OO    9.52E+OO U WG        W-11      365519011 1/16/2015    K-40        9.66E+OO    2.05E+Ol    7.14E+Ol U WG        W-11      365519011 1/16/2015   La-140       1.61E+OO    1.77E+OO    6.61E+OO U WG        W-11      365519011 1/16/2015   Mn-54       -1.23E+OO    1.41E+OO    4.07E+OO U WG        W-11      365519011 1/16/2015   Nb-95        1.23E+OO    1.57E+OO    5.35E+OO U D-107

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-11      365519011 1/16/2015    Ru-103      3.24E+OO    l.91E+OO    6.45E+OO u WG         W-11      365519011 1/16/2015    Ru-106      7.36E+OO    l.43E+Ol    4.38E+Ol u WG         W-11      365519011 1/16/2015    Sb-124      7.41E+OO    3.95E+OO    l.47E+Ol u WG         W-11      365519011 1/16/2015    Sb-125      8.21E+OO    4.99E+OO    l.63E+Ol u WG         W-11      365519011 1/16/2015     Se-75     -1.59E+OO    2.41E+OO    7.65E+OO u WG         W-11      365519011 1/16/2015    Th-228     -5.07E+OO    3.89E+OO    l.16E+Ol u WG         W-11      365519011 1/16/2015    Zn-65      -l.25E-02    2.89E+OO    9.56E+OO u WG         W-11      365519011 1/16/2015     Zr-95      9.78E-Ol    2.55E+OO    8.56E+OO u WG         W-12      365519012 1/16/2015    Ac-228     -8.75E+OO    5.67E+OO    l.51E+Ol u WG         W-12      365519012 1/16/2015  Ag-108m       7.33E-Ol    l.16E+OO    3.91E+OO u WG         W-12      365519012 1/16/2015  Ag-llOm      -l.85E-Ol    1.20E+OO    3.79E+OO u WG         W-12      365519012 1/16/2015    Ba-140      l.31E+OO    l.32E+OO    4.92E+OO u WG         W-12      365519012 1/16/2015     Be-7       3.lOE+OO    l.08E+Ol    3.59E+Ol u WG         W-12      365519012 1/16/2015    Ce-141     -7.96E-Ol    2.23E+OO    7.05E+OO u WG         W-12      365519012 1/16/2015    Ce-144     -2.12E+OO    8.50E+OO    2.71E+Ol u WG         W-12      365519012 1/16/2015    Co-57      -3.35E-Ol    1.1 IE+OO   3.55E+OO u WG         W-12      365519012 1/16/2015    Co-58      -2.69E-Ol    l.27E+OO    3.58E+OO u WG         W-12      365519012 1/16/2015    Co-60       1.76E+OO    1.43.E+OO   4.97E+OO u WG         W-12      365519012 1/16/2015     Cr-51     -3.88E+OO    l.07E+Ol    3.50E+Ol u WG         W-12      365519012 1/16/2015    Cs-134     -5.73.E-Ol   l.32E+OO    4.25E+OO u WG         W-12      365519012 1/16/2015    Cs-137     -2.03.E+OO   l.58E+OO    4.40E+OO u WG         W-12      365519012 1/16/2015     Fe-59      1.58E+OO    2.47E+OO    8.44E+OO u WG         W-12      365519012 1/16/2015      H-3       3.87E+Ol    3.94E+02    l.29E+03 u WG         W-12      365519012 1/16/2015     I-131      l.55E+OO    2.17E+OO    7.34E+OO u WG         W-12      365519012 1/16/2015     K-40       l.84E+Ol    l.70E+Ol    6.27E+Ol u WG         W-12      365519012 1/16/2015    La-140      l.31E+OO    l.32E+OO    4.92E+OO u WG         W-12      365519012 1/16/2015    Mn-54       2.36E+OO    l.17E+OO    3.6IE+OO u WG         W-12      365519012 1/16/2015    Nb-95       2.39E+OO    l.32E+OO    4.55E+OO u WG         W-12      365519012 1/16/2015    Ru-103     -2.98E+OO    l.56E+OO    3.91E+OO u WG         W-12      365519012 1/16/2015    Ru-106     -l.13E+OO    8.90E+OO    2.82E+Ol u WG         W-12      365519012 1/16/2015    Sb-124     -8.78E-Ol    2.06E+OO    6.28E+OO u WG         W-12      365519012 1/16/2015    Sb-125     -4.68E+OO    3.15E+OO    8.60E+OO u WG         W-12      365519012 1/16/2015     Se-75      2.66E+OO    l.66E+OO    5.55E+OO u WG         W-12      365519012 1/16/2015    Th-228      l.99E+OO    3.00E+OO    8.93.E+OO u WG         W-12      365519012 1/16/2015    Zn-65      -5.0IE+OO    3.02E+OO    5.40E+OO u WG         W-12      365519012 1/16/2015     Zr-95      9.98E+OO    3.22E+OO    8.36E+OO UI WG         W-13      365519013 1/16/2015    Ac-228      5.86E+OO    6.18E+OO    l.97E+Ol u WG         W-13      365519013 1/16/2015   Ag-108m      -1.83.E-Ol  l.38E+OO    4.48E+OO u WG         W-13      365519013 1/16/2015   Ag-llOm      -l.02E-Ol   l.12E+OO    3.73.E+OO u WG         W-13      365519013 1/16/2015    Ba-140     -2.88E+OO    2.30E+OO    6.17E+OO u WG         W-13      365519013 1/16/2015     Be-7      -7.77E+OO    1.25E+Ol    3.86E+Ol u WG         W-13      365519013 1/16/2015    Ce-141      4.60E+OO    2.90E+OO    8.16E+OO u WG         W-13      365519013 1/16/2015    Ce-144      l.07E+Ol    l.07E+Ol    3.44E+Ol u WG         W-13      365519013 1/16/2015    Co-57       -9.93E-Ol   l.32E+OO    4.03E+OO u WG         W-13      365519013 1/16/2015    Co-58       3.50E+OO    l.42E+OO    4.61E+OO u WG         W-13      365519013 1/16/2015    Co-60        2.78E-Ol   l.51E+OO    4.97E+OO u WG         W-13      365519013 1/16/2015     Cr-51      l.61E+Ol    l.28E+Ol    4.31E+Ol u WG         W-13      365519013 1/16/2015    Cs-134     -I.49E+OO    l.36E+OO    3.94E+OO u WG         W-13      365519013 1/16/2015    Cs-137      1.55E+OO    l.30E+OO    4.56E+OO u WG         W-13      365519013 1/16/2015     Fe-59      -9.33E-Ol   2.79E+OO    8.79E+OO u D-108

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-13      365519013 111612015      H-3       4.35E+Ol    3.83E+02    l.26E+03 u WG         W-13      365519013 1/16/2015     I-131     -4.64E+OO    2.51E+OO    6.56E+OO u WG         W-13      365519013 1/16/2015     K-40       3.43E+Ol    2.05E+Ol    7.25E+Ol u WG         W-13      365519013 111612015    La-140     -2.88E+OO    2.30E+OO    6.17E+OO u WG         W-13      365519013 1/16/2015    Mn-54       4.23E+OO    2.53E+OO    3.60E+OO UI WG         W-13      365519013 1/16/2015    Nb-95       5.64E-Ol    l.14E+OO    3.96E+OO u WG         W-13      365519013 1/16/2015    Ru-103     -3.20E-Ol    l.43E+OO    4.55E+OO u WG         W-13      365519013 1/16/2015    Ru-106      l.30E+Ol    l.34E+Ol    4.48E+Ol u WG         W-13      365519013 111612015    Sb-124     -3.55E+OO    3.63E+OO    l.03E+Ol u WG         W-13      365519013 111612015    Sb-125     -6.09E+OO    3.97E+OO    l.08E+Ol u WG         W-13      365519013 1/16/2015     Se-75     -4.95E+OO    2.16E+OO    5.26E+OO u WG         W-13      365519013 1/16/2015    Th-228     -7.58E+OO    3.49E+OO    8.63E+OO u WG         W-13      365519013 1/16/2015    Zn-65      -5.88E+OO    3.32E+OO    7.79E+OO u WG         W-13      365519013 111612015     Zr-95      4.88E+OO    l.78E+OO    7.51E+OO u WG         W-14      365519014 111612015    Ac-228     -2.90E+OO    6.66E+OO    2.09E+Ol u WG         W-14      365519014 1116/2015  Ag-108m       2.llE+OO    l.43E+OO    4.40E+OO u WG         W-14      365519014 1116/2015   Ag-llOm      l.98E+OO    l.23E+OO    4.37E+OO u WG         W-14      365519014 1/16/2015    Ba-140     -l.58E-Ol    2.26E+OO    7.39E+OO u WG         W-14      365519014 1116/2015     Be-7       l.68E+Ol    l.48E+Ol    3.99E+Ol u WG         W-14      365519014 111612015    Ce-141      l.21E+OO    2.86E+OO    9.27E+OO u WG         W-14      365519014 1/16/2015    Ce-144      l.52E+OO    l.08E+Ol    3.47E+Ol u WG         W~14      365519014 1116/2015    Co-57      -l.13E+OO    l.35E+OO    4.llE+OO u WG         W-14      365519014 111612015  . Co-58        9.45E-Ol   l.20E+OO    4.22E+OO u WG         W-14      365519014 1116/2015    Co-60      -2.21E-Ol    1.21E+OO    3.94E+OO u WG         W-14      365519014 1116/2015     Cr-51     -1.36E+Ol    l.36E+Ol    4.15E+Ol u WG         W-14    . 365519014 1116/2015    Cs-134     -l.86E+OO    l.64E+OO    4.52E+OO u WG         W-14      365519014 1116/2015    Cs-137     -l.53E+OO    l.41E+OO    4.17E+OO u WG         W-14      365519014 1/16/2015     Fe-59     -2.14E+OO    2.64E+OO    7.54E+OO u WG         W-14      365519014 111612015      H-3       l.85E+02    4.0IE+02    l.29E+03 u WG         W-14      365519014 1/16/2015     I-131      2.42E-01    2.52E+OO    8.32E+OO u WG         W-14      365519014 1/16/2015     K-40       2.41E+OO    2.0IE+Ol    q.27E+Ol u WG         W-14      365519014 1/16/2015    La-140     -l.58E-01    2.26E+OO    7.39E+OO u WG         W-14      365519014 1/16/2015    Mn-54       l.71E+OO    2.28E+OO    4.51E+OO u WG         W-14      365519014 1/16/2015    Nb-95        8.72E-01   l.50E+OO    5.15E+OO u WG         W-14      365519014 1/16/2015    Ru-103      l.56E+OO    l.85E+OO    5.51E+OO u WG         W-14      365519014 111612015    Ru-106      l.82E+Ol    l.23E+Ol    4.32E+Ol u WG         W-14      365519014 1/16/2015    Sb-124     -5.65E+OO    3.24E+OO    6.llE+OO u WG         W-14      365519014 111612015    Sb-125      5.21E+OO    3.82E+OO    l.30E+Ol u WG         W-14      365519014 1/16/2015     Se-75       5.79E-Ol   2.00E+OO    6.0IE+OO u WG         W-14      365519014 1/16/2015    Th-228      l.36E+OO    2.75E+OO    9.1 IE+OO u WG         W-14      365519014 111612015    Zn-65       -6.59E-Ol   2.93E+OO    7.82E+OO u WG         W-14      365519014 1/16/2015     Zr-95      l.31E+OO    2.62E+OO    9.00E+OO u WG         W-15      365519015 1/19/2015    Ac-228     -7.79E+OO    6.20E+OO    l.76E+Ol u WG         W-15      365519015 1/19/2015   Ag-108m      l.36E+OO    l.28E+OO    4.32E+OO u WG         W-15      365519015 l/19/2015   Ag-llOm       5.05E-Ol   l.45E+OO    4.32E+OO u WG         W-15      365519015 1/19/2015    Ba-140     -3.07E+OO    2.49E+OO    6.75E+OO u WG         W-15      365519015 111912015     Be-7       l.92E+Ol    l.20E+Ol    4.05E+Ol u WG         W-15      365519015 1/19/2015    Ce-141     -l.47E+OO    2.74E+OO    7.61E+OO u WG         W-15      365519015 1/19/2015    Ce-144     -l.66E+Ol    l.09E+Ol    3.IOE+Ol u WG         W-15      365519015 1/19/2015    Co-57        3.92E-Ol   l.25E+OO    4.14E+OO u D-109

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-15      365519015 111912015      Co-58       l.19E-Ol   l.60E+OO    5.23E+OO u WG         W-15      365519015 111912015      Co-60       5.50E-Ol   l.70E+OO    5.70E+OO u WG         W-15      365519015 111912015      Cr-51      5.34E+OO    l.29E+Ol    4.35E+Ol u WG         W-15      365519015 111912015     Cs-134       8.68E-02   l.57E+OO    5.13E+OO u WG         W-15      365519015 111912015     Cs-137      -8.65E-Ol   l.59E+OO    4.66E+OO u WG         W-15      365519015 111912015      Fe-59     -5.8IE-Ol    2.76E+OO    8.90E+OO u WG         W-15      365519015 111912015       H-3      -2.64E+Ol    3.82E+02    l.26E+03 u WG         W-15      365519015 111912015      1-131     -2.92E+OO    l.90E+OO    5.16E+OO u WG         W-15      365519015 111912015      K-40      -3.74E+Ol    2.12E+Ol    5.98E+Ol u WG         W-15      365519015 111912015     La-140     -3.07E+OO    2.49E+OO    6.75E+OO u WG         W-15      365519015 111912015     Mn-54       l.49E+OO    l.38E+OO    4.79E+OO u WG         W-15      365519015 111912015     Nb-95      -l.57E+OO    l.66E+OO    4.87E+OO u WG         W-15      365519015 111912015    Ru-103      -5.58E-Ol    l.52E+OO    5.00E+OO u WG         W-15      365519015 111912015    Ru-106      -l.72E+Ol    l.46E+Ol    4.21E+Ol u WG         W-15      365519015 111912015     Sb-124      9.73E-Ol    4.38E+OO    l.48E+Ol u WG         W-15      365519015 111912015     Sb-125     -l.57E+OO    4.20E+OO    l.2IE+Ol u WG         W-15      365519015 111912015      Se-75     -4.39E+OO    2.20E+OO    5.76E+OO u WG         W-15      365519015 111912015    Th-228      -6.69E+OO    3.62E+OO    9.94E+OO u WG         W-15      365519015 111912015      Zn-65      8.96E+oo*   2.79E+OO    l.09E+Ol u WG         W-15      365519015 111912015      Zr-95     -2.79E+OO    2.65E+OO    7.52E+OO u WG         MW-20     365519016 111612015    Ac-228       3.83E-Ol    5.87E+OO    2.0IE+Ol u WG         MW-20     365519016 111612015   Ag-108m        l.54E-Ol   l.29E+OO    4.22E+OO u WG         MW-20     365519016 111612015   Ag-llOm       4.73E-Ol    l.09E+OO    3.77E+OO u WG        MW-20      365519016 111612015    Ba-140       l.39E+OO    2.41E+OO    8.31E+OO u WG         MW-20     365519016 111612015      Be-7       l.53E+Ol    l.21E+Ol    4.09E+Ol u WG        MW-20      365519016 111612015    Ce-141       4.41E+OO    2.82E+OO    9.37E+OO u WG         MW-20     365519016 111612015    Ce-144      -l.13E+OO    l.05E+Ol    3.38E+Ol u WG         MW-20     365519016 1/16/2015    . Co-57     -l.97E+OO    l.43E+OO    4.14E+OO u WG         MW-20     365519016 111612015      Co-58     -7.44E-01    l.20E+OO    3.63E+OO u WG        MW-20      365519016 111612015      Co-60      3.72E+OO    2.04E+OO    7.12E+OO u WG        MW-20      365519016 111612015      Cr-51     -l.05E+Ol    l.34E+Ol    4.19E+Ol u WG         MW-20     365519016 111612015     Cs-134     -l.23E+OO    l.33E+OO    3.82E+OO u WG        MW-20      365519016 111612015     Cs-137     -2.07E+OO    l.49E+OO    3.71E+OO u WG         MW-20     365519016 111612015      Fe-59      7.14E-Ol    3.22E+OO    l.IOE+Ol u WG         MW-20     365519016 111612015       H-3       4.73E+02    4.17E+02    l.29E+03 u WG        MW-20      365519016 1116/2015      1-131     -l.94E+OO    2.53E+OO    7.83E+OO u WG        MW-20      365519016 1/16/2015      K-40       8.36E+OO    l.96E+Ol    6.50E+Ol u WG        MW-20      365519016 1/16/2015     La-140      l.39E+OO    2.41E+OO    8.31E+OO u WG         MW-20     365519016 1/16/2015     Mn-54       3.52E-Ol    l.36E+OO    4.55E+OO u WG         MW-20     365519016 1/16/2015     Nb-95      -3.83E-02    l.67E+OO    5.24E+OO u WG        MW-20      365519016 111612015    Ru-103      -l.77E+OO    l.47E+OO    4.08E+OO u WG        MW-20      365519016 1/16/2015    Ru-106       l.19E+Ol    l.20E+Ol    4.21E+Ol u WG        MW-20      365519016 111612015     Sb-124      3.98E+OO    4.44E+OO    l.54E+Ol u WG        MW-20      365519016 1/16/2015     Sb-125     -3.49E-Ol    3.83E+OO    l.24E+Ol u WG        MW-20      365519016 1/16/2015      Se-75     -8.18E-Ol    l.72E+OO    5.61E+OO u WG         MW-20     365519016 1/16/2015    Th-228       2.08E+OO    3.73E+OO    l.02E+Ol u WG        MW-20      365519016 1/16/2015      Zn-65     -l.22E+OO    2.61E+OO    6.79E+OO u WG        MW-20      365519016 111612015      Zr-95     -5.78E+OO    3.02E+OO    7.24E+OO u WG        MW-21      365519017 1(1612015    Ac-228       4.65E+OO    7.38E+OO    2.49E+Ol u WG        MW-21      365519017 111612015   Ag-108m      -l.67E+OO    l.61E+OO    4.75E+OO u D-110

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         MW-21     365519017 1116/2015  Ag-llOm       8.38E-01    l.61E+OO    4.80E+OO u WG         MW-21     365519017 1/16/2015   Ba-140       6.15E+OO    2.64E+OO    9.44E+OO u WG         MW-21     365519017 1/16/2015    Be-7*      -l.08E+OO    1.36E+Ol    4.33E+Ol u WG         MW-21     365519017 1/16/2015   Ce-141       2.00E+OO    4.30E+OO    8.57E+OO u WG         MW-21     365519017 1/16/2015   Ce-144      -3.41E+OO    l.OlE+Ol    3.25E+Ol u WG         MW-21     365519017 1116/2015    Co-57      -7.37E-02    1.39E+OO    4.57E+OO u WG         MW-21     365519017 1116/2015    Co-58      -9.23E-Ol    l.78E+OO    4.64E+OO u WG         MW-21     365519017 1116/2015    Co-60      -6.41E-Ol    l.59E+OO    4.90E+OO u WG         MW-21     365519017 1/16/2015    Cr-51      -2.35E+Ol    l.46E+Ol    4.09E+Ol u WG         MW-21     365519017 1/16/2015   Cs-134      -l.09E+OO    l.74E+OO    5.31E+OO u WG         MW-21     365519017 1/16/2015   Cs-137      -l.41E+OO    l.69E+OO    5.03E+OO u WG         MW-21     365519017 1/16/2015    Fe-59       3.90E-02    3.26E+OO    l.08E+Ol u WG         MW-21     365519017 1/16/2015     H-3       -6.95E+02    3.98E+02    l.41E+03 u WG         MW-21     365519017 1/16/2015    1-111       4.20E+OO    2.66E+OO    8.02E+OO u WG         MW-21     365519017 1/16/2015    K-40        2.19E+OI    2.85E+Ol    6.96E+Ol u WG         MW-21     365519017 1/16/2015   La-140       6.15E+OO    2.64E+OO    9.44E+OO u WG         MW-21     365519017 1/16/2015   Mn-54       -3.23E-OI    1.30E+OO    4.llE+OO u WG         MW-21     365519017 1/16/2015    Nb-95       l.79E+OO    l.73E+OO    6.13E+OO u WG         MW-21     365519017 1/16/2015   Ru-103      -5.37E-Ol    l.65E+OO    5.46E+OO u WG         MW-21     365519017 1/16/2015   Ru-106       l.44E+OO    l.20E+Ol    4.00E+Ol u WG         MW-21     365519017 1/16/2015   Sb-124       4.52E+OO    3.06E+OO    l.15E+Ol u WG         MW-21     365519017 1/16/2015   Sb-125      -3.81E+OO    4.83E+OO    l.47E+OI u WG         MW-21     365519017 1116/2015    Se-75       l.94E+OO    2.18E+OO    7.40E+OO u WG         MW-21     365519017 1/16/2015   Th-228       6.69E-OI    3.57E+OO    l.07E+Ol u WG         MW-21     365519017 1/16/2015    Zn-65      -8.41E+OO    4.44E+OO    l.09E+Ol u WG         MW-21     365519017 1/16/2015    Zr-95      -l.07E+OO    2.72E+OO    8.55E+OO u WG         SG-1      365519018 1/16/2015   Ac-228      -4.61E+OO    7.08E+OO    2.24E+Ol u WG         SG-1      365519018 1/16/2015  Ag-108m       2.42E+OO    l.81E+OO    5.28E+OO u WG         SG-1      365519018 1/16/2015  Ag-llOm       7.08E-Ol    l.61E+OO    4.79E+OO u WG         SG-1      365519018 1/16/2015   ALPHA       -4.29E-Ol    8.30E-Ol    2.81E+OO u WG         SG-1      365519018 1/16/2015   Ba-140      -3.44E-Ol    2.IOE+OO    6.84E+OO u WG         SG-1      365519018 1/16/2015    Be-7        l.06E+Ol    l.53E+Ol    5.26E+Ol u WG         SG-1      365519018 1/16/2015    BETA        6.07E+OO    l.02E+OO    2.62E+OO WG         SG-1      365519018 1/16/2015   Ce-141      -l.60E+OO    3.43E+OO    9.17E+OO u WG         SG-1      365519018 1/16/2015   Ce-144      -l.19E-Ol    l.19E+Ol    3.79E+Ol u WG         SG-1      365519018 1/16/2015    Co-57       8.80E-03    l.40E+OO    4.47E+OO u WG         SG-1      365519018 1/16/2015    Co-58      -l.12E+OO    l.45E+OO    4.25E+OO u WG         SG-1      365519018 1/16/2015    Co-60       3.06E+OO    l.73E+OO    6.21E+OO u WG         SG-1      365519018 1/16/2015    Cr-51       3.22E-Ol    l.52E+Ol    4.96E+OI u WG         SG-1      365519018 1/16/2015   Cs-134       8.33E-Ol    l.52E+OO    5.15E+OO u WG         SG-1      365519018 1/16/2015   Cs-137      -2.89E+OO    2.0lE+OO    4.90E+OO u WG         SG-1      365519018 1/16/2015    Fe-59       2.98E+OO    3.20E+OO    l.12E+OI u WG         SG-1      365519018 1/16/2015     H-3        l.48E+02    3.94E+02    1.27E+03 u WG         SG-1      365519018 1/16/2015    1-131       4.49E+OO    2.65E+OO    8.73E+OO u WG         SG-1      365519018 1116/2015    K-40       -l.51E+Ol    l.84E+Ol    5.61E+Ol u WG         SG-1      365519018 1/16/2015   La-140      -3.44E-01    2.IOE+OO    6.84E+OO u WG         SG-1      365519018 1/16/2015   Mn-54        5.21E-Ol    l.44E+OO    4.81E+OO u WG         SG-1      365519018 1/16/2015    Nb-95       2.07E+OO    l.83E+OO    5.63E+OO u WG         SG-1      365519018 1/16/2015   Ru-103      -2.09E-Ol    l.65E+OO    5.49E+OO u WG         SG-1      365519018 1116/2015   Ru-106      -9.32E+OO    l.83E+OI    4.65E+Ol u D-111

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.        MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)     (pCi/L)
WG         SG-1      365519018 1116/2015   Sb-124      -8.48E-Ol    3.42E+OO     l.IOE+Ol u WG         SG-1      365519018 1/16/2015   Sb-125       l.19E+OO    4.60E+OO
* l.32E+Ol u WG         SG-1      365519018 1116/2015    Se-75       2.06E+OO    2.IOE+OO     7.06E+OO u WG         SG-1      365519018 1/16/2015   Th-228       2.29E+OO    3.77E+OO     l.24E+Ol u WG         SG-1      365519018 1/16/2015    Zn-65      -4.77E+OO    3.46E+OO     9.2IE+OO u WG         SG-1      365519018 1116/2015    Zr-95      -8.19E-Ol    2.55E+OO     8.03E+OO u WG         SG-2      365519019 1/16/2015   Ac-228       l.23E+Ol    6.63E+OO     2.34E+Ol u WG         SG-2      365519019 1/16/2015  Ag-108m       2.48E+OO    l.58E+OO     4.92E+OO u WG         SG-2      365519019 1116/2015  Ag-llOm       l.OIE+OO    1.53E+OO     5.14E+OO u WG.        SG-2      365519019 1116/2015   ALPHA       -l.30E+OO    1.22E+OO     4.19E+OO u   DL WG         SG-2      365519019 1/16/2015   Ba-140       l.35E+OO    2.67E+OO     9.32E+OO u WG         SG-2      365519019 1/16/2015     Be-7      -6.16E+OO    l.49E+Ol     4.74E+Ol u WG         SG-2      365519019 1116/2015    BETA        8.88E+OO    l.28E+OO     3.05E+OO WG         SG-2      365519019 1/16/2015   Ce-141      -4.04E+OO    2.72E+OO     7.70E+OO u WG         SG-2      365519019 1/16/2015   Ce-144      -4.69E+OO    8.79E+OO     2.83E+Ol lJ WG         SG-2      365519019 1/16/2015    Co-57       l.OOE+OO    1.1 IE+OO    3.74E+OO u WG         SG-2      365519019 1/16/2015    Co-58      -2.39E+OO    1.68E+OO     4.51E+OO u WG         SG-2      365519019 1116/2015    Co-60      -4.55E-Ol    2.20E+OO     7.20E+OO u WG         SG-2      365519019 1116/2015    Cr-51       2.67E+Ol    l.46E+Ol     4.91E+Ol u WG         SG-2      365519019 1116/2015   Cs-134      -l.31E+OO    2.lIE+OO     6.64E+OO u WG         SG-2      365519019 1/16/2015   Cs-137      -4.06E+OO    2.34E+OO     5.08E+OO u WG         SG-2      365519019 1/16/2015    Fe-59      -2.27E+OO    4.54E+OO     l.17E+Ol u WG         SG-2      365519019 1116/2015     H-3        l.12E+02    3.87E+02     l.26E+03 u WG         SG-2      365519019 1/16/2015    I-131       l.50E+OO    2.28E+OO     7.84E+OO u WG         SG-2      365519019 1/16/2015    K-40       -4.15E+OO    l.89E+Ol     6.24E+Ol u WG         SG-2      365519019 1/16/2015   La-140       l.35E+OO    2.67E+OO     9.32E+OO u WG         SG-2      365519019 1/16/2015   Mn-54        5.74E+OO    2.04E+OO     6.28E+OO u WG         SG-2      365519019 1/16/2015    Nb-95       2.38E+OO    l.73E+OO     5.65E+OO u WG         SG-2      365519019 1116/2015   Ru-103       4.57E-Ol    l.84E+OO     6.12E+OO u WG         SG-2      365519019 1116/2015   Ru-106      -8.62E+OO    l.52E+Ol     4.61E+Ol u WG         SG-2      365519019 1116/2015   Sb-124       3.35E+OO    4.30E+OO     l.53E+Ol u WG         SG-2      365519019 1/16/2015   Sb-125       5.lIE+OO    4.42E+OO     l.51E+Ol u WG         SG-2      365519019 1116/2015    Se-75       2.IOE-01    l.97E+OO     6.29E+OO u WG         SG-2      365519019 1/16/2015   Th-228       7.70E+OO    3.75E+OO     8.87E+OO u WG         SG-2      365519019 1/16/2015    Zn-65       4.61E-Ol    4.39E+OO     l.25E+Ol u WG         SG-2      365519019 1/16/2015    Zr-95       3.52E+OO    3.00E+OO     l.06E+Ol u WG         SG-4      365519020 1116/2015   Ac-228      -6.74E+OO    6.04E+OO     l.77E+Ol u WG         SG-4      365519020 1/16/2015  Ag-108m      -2.57E+OO    l.26E+OO     3.22E+OO u WG         SG-4      365519020 1/16/2015  Ag-llOm      -l.69E+OO    l.20E+OO     3.31E+OO u WG         SG-4      365519020 1/16/2015   ALPHA        l.78E+OO    9.52E-Ol     2.86E+OO u WG         SG-4      365519020 1/16/2015   Ba-140      -1.SIE+OO    1.85E+OO     5.12E+OO u WG         SG-4      365519020 1/16/2015     Be-7      -l.39E+Ol    1.lIE+Ol     3.29E+Ol u WG         SG-4      365519020 1/16/2015    BETA        l.OIE+Ol    1.21E+OO     2.43E+OO WG         SG-4      365519020 1/16/2015   Ce-141       -3.9IE-01   2.78E+OO     7.87E+OO u WG         SG-4      365519020 1/16/2015   Ce-144      -1.ISE+Ol    9.08E+OO     2.74E+Ol u WG         SG-4      365519020 1/16/2015    Co-57       l.44E+OO    l.02E+OO     3.76E+OO u WG         SG-4      365519020 1/16/2015    Co-58       4.05E-Ol    l.26E+OO     4.16E+OO u WG         SG-4      365519020 1/16/2015    Co-60       7.58E-Ol    l.27E+OO     4.39E+OO u WG         SG-4      365519020 1/16/2015    Cr-51      -I.66E+Ol    l.28E+Ol     3.66E+Ol u WG         SG-4      365519020 1116/2015   Cs-134        5.37E-Ol   l.14E+OO     3.83E+OO u D-112

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC       STD.DEV. MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)     (pCi/L)  (pCi/L)
WG         SG-4      365519020 1/16/2015    Cs-137        l.84E-01     1.44E+OO  4.56E+OO u WG         SG-4      365519020 1116/2015     Fe-59      -1.51E+OO      2.70E+OO  8.54E+OO u WG         SG-4      365519020 1/16/2015      H-3        3.59E+02      3.96E+02  1.25E+03 u WG         SG-4      365519020 1/16/2015     1-131      -6.82E-01      2.09E+OO  6.94E+OO u WG         SG-4      365519020 1116/2015     K-40        3.42E-01      l.81E+Ol  5.87E+Ol u WG         SG-4      365519020 1/16/2015    La-140      -l.81E+OO      l.85E+OO  5.12E+OO u WG         SG-4      365519020 1/16/2015    Mn-54        7.60E-Ol      l.30E+OO  3.85E+OO u WG         SG-4      365519020 1116/2015     Nb-95       9.14E-Ol      l.30E+OO  4.37E+OO u WG         SG-4      365519020 1116/2015    Ru-103        1.22E-Ol     1.27E+OO  4.26E+OO u WG         SG-4      365519020 1116/2015    Ru-106      -1.69E+Ol      l.17E+Ol  3.25E+Ol u WG         SG-4      365519020 1116/2015    Sb-124      -9.64E-Ol      3.18E+OO  9.94E+OO u WG         SG-4      365519020 1/16/2015    Sb-125       l.18E+OO      3.67E+OO  l.24E+Ol u WG         SG-4      365519020 1/16/2015     Se-75       l.72E+OO      l.94E+OO  6.35E+OO u WG         SG-4      365519020 1/16/2015    Th-228      -7.82E-01      3.0lE+OO  8.38E+OO u WG         SG-4      365519020 1/16/2015     Zn-65      -1.44E+OO      2.44E+OO  7.62E+OO u WG         SG-4      365519020 1/16/2015     Zr-95       3.70E+OO      2.31E+OO  7.83E+OO u WG         SG-5      365519021 1/16/2015    Ac-228       9.88E+OO      7.02E+OO  2.42E+Ol u WG         SG-5      365519021 1116/2015   Ag-108m       3.74E-Ol      l.21E+OO  4.14E+OO u WG         SG-5      365519021 1/16/2015   Ag-llOm       l.23E+OO      l.49E+OO  4.52E+OO u WG         SG-5      365519021 1/16/2015    ALPHA        l.15E+OO      9.79E-Ol  3.07E+OO u WG         SG-5      365519021 1/16/2015    Ba-140       7.74E-02      2.55E+OO  8.43E+OO u WG         SG-5      365519021 1/16/2015     Be-7       -5.82E+OO      l.43E+Ol  4.02E+Ol u WG         so:5      365519021 1116/2015     BETA        l.53E+Ol      l.47E+OO  l.63E+OO WG         SG-5      365519021 1/16/2015    Ce-141      -9.86E-01      2.17E+OO  6.75E+OO U WG         SG-5      365519021 1/16/2015    Ce-144      -1.00E+Ol      8.44E+OO  2.47E+Ol U WG         SG-5      365519021 1/16/2015     Co-57       5.43E-01      l.llE+OO  3.55E+OO U WG         SG-5      365519021 1/16/2015     Co-58       5.97E-Ol      l.48E+OO  4.91E+OO U WG         SG-5      365519021 1/16/2015     Co-60       l.84E+OO      l.53E+OO  5.53E+OO U WG         SG-5      365519021 1/16/2015     Cr-51      -1.09E+Ol      l.43E+Ol  3.80E+Ol D WG         SG-5      365519021 1116/2015    Cs-134      -l.47E+OO      l.74E+OO  5.lOE+OO U WG         SG-5      365519021 1/16/2015    Cs-137       l.20E+OO      1.54E+OO  5.24E+OO U WG         SG-5      365519021 1/16/2015     Fe-59       l.12E+OO      2.83E+OO  9.60E+OO U WG         SG-5      365519021 1/16/2015      H-3        4.28E+02      4.02E+02  l.25E+03 U WG         SG-5      365519021 1/16/2015     1-131      -2.12E+OO      2.41E+OO  7.26E+OO U WG         SG-5      365519021 1/16/2015     K-40        l.06E+Ol      2.04E+Ol  7.31E+Ol U WG         SG-5      365519021 111612015    La-140       7.74E-02   I  2.55E+OO  8.43E+OO U WG         SG-5      365519021 1/16/2015    Mn-54       -6.70E-01      l.13E+OO  3.53E+OO U WG         SG-5      365519021 1/16/2015    Nb-95       -3.69E+OO      l.72E+OO  3.92E+OO U WG         SG-5      365519021 1/16/2015    Ru-103       4.84E-02      1.54E+OO  5.15E+OO U WG         SG-5      365519021 1/16/2015    Ru-106       l.62E+Ol      l.38E+Ol  4.72E+Ol U WG         SG-5      365519021 1/16/2015    Sb-124      -3.98E+OO      4.08E+OO  l.15E+Ol U we;        SG-5      365519021 1/16/2015    Sb-125      -9.88E-Ol      3.67E+OO  l.15E+Ol U WG         SG-5      365519021 1/16/2015     Se-75      -l.SOE-02      l.96E+OO  5.69E+OO U WG         SG-5      365519021 1116/2015    Th-228       2.93E+OO      3.26E+OO  9.28E+OO U WG         SG-5      365519021 1/16/2015     Zn-65      -2.43E+OO      3.16E+OO  7.55E+OO U WG         SG-5      365519021 1/16/2015     Zr-95      -3.85E+OO      2.86E+OO  7.71E+OO U WG         W-1       371326001 4/15/2015    Ac-228       l.47E+OO      5.66E+OO  1.59E+Ol U WG         W-1       371326001 4/15/2015   Ag-108m      -8.43E-01      l.llE+OO  3.39E+OO U WG         W-1       371326001 4/15/2015   Ag-llOm      -1.49E-01      l.16E+OO  3.85E+OO U WG         W-1       371326001 4/15/2015    Ba-140      -l.43E+OO      6.30E+OO  2.lOE+Ol U D-113

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-1       371326001 4/15/2015     Be-7        1.47E+OO    1.08E+Ol    3.50E+Ol  u WG         W-1       371326001 4/15/2015    Ce-141      -3.4IE+OO    2.96E+OO    7.76E+OO  u WG         W-1       371326001 4/15/2015    Ce-144       5.98E+OO    8.46E+OO    2.76E+Ol  u WG         W-1       371326001 4/15/2015     Co-57       -3.12E-02   1.08E+OO    3.48E+OO  u WG         W-1       371326001 4/15/2015     Co-58       -5.68E-02   l.17E+OO    3.82E+OO  u WG         W-1       371326001 4/15/2015     Co-60       -6.0SE-01   l.40E+OO    4.42E+OO  u WG         W-1       371326001 4/15/2015     Cr-51      -2.64E+Ol    l.24E+Ol    3.12E+Ol  u WG         W-1       371326001 4/15/2015    Cs-134      -3.llE-01    l.44E+OO    4.35E+OO  u WG         W-1       371326001 4/15/2015    Cs-137        l.28E-01   l.35E+OO    4.53E+OO  u WG         W-1       371326001 4/15/2015     Fe-59       3.07E+OO    2.52E+OO    8.79E+OO  u WG         W-1       371326001 4/15/2015      H-3       -2.14E+02    4.92E+02    l.65E+03  u WG         W-1       371326001 4/15/2015     I-131       4.67E+OO    2.34E+OO    5.98E+OO  u WG         W-1       371326001 4/15/2015     K-40       -l.55E+OO    l.82E+Ol    5.99E+Ol  u WG         W-1       371326001 4/15/2015    La-140      -8.65E-02    2.36E+OO    7.67E+OO  u WG         W-1       371326001 4/15/2015    Mn-54         l.14E-02   1.36E+OO    4.44E+OO  u WG         W-1       371326001 4/15/2015    Nb-95       -6.3IE-02    l.23E+OO    4.05E+OO  u WG         W-1       371326001 4/15/2015    Ru-103      -2.63E+OO    l.43E+OO    3.60E+OO  u WG        W-1        371326001 4/15/2015    Ru-106       2.88E+Ol    l.13E+Ol    3.89E+Ol  u WG        W-1        371326001 4/15/2015    Sb-124      -1.04E+OO    3.05E+OO    9.46E+OO  u WG        W-1        371326001 4/15/2015    Sb-125      -2.21E+OO    3.40E+OO    l.05E+Ol  u WG        W-1        371326001 4/15/2015     Se-75       2.54E-01    l.59E+OO    5.34E+OO  u WG         W-1       371326001 4/15/2015    Th-228        l.83E-01   4.09E+OO    8.97E+OO  u WG         W-1       371326001 4/15/2015    Zn-65       -2.92E+OO    2.59E+OO    7.57E+OO  u WG        W-1        371326001 4/15/2015     Zr-95      -9.24E-01    2.19E+OO    6.98E+OO  u WG        W-7        371326002 4/14/2015    Ac-228      -2.56E+OO    4.88E+OO    l.62E+Ol  u WG        W-7        371326002 4/14/2015   Ag-108m       2.58E-01    l.06E+OO    3.53E+OO  u WG         W-7       371326002 4/14/2015   Ag-llOm       8.04E-01    l.15E+OO    3.83E+OO  u WG         W-7       371326002 4/14/2015    Ba-140       1.58E+Ol    6.50E+OO    l.95E+Ol  u WG         W-7       371326002 4/14/2015     Be-7       -4.99E+OO    1.28E+Ol    3.51E+Ol  u WG        W-7        371326002 4/14/2015    Ce-141      -2.00E+OO    2.51E+OO    7.27E+OO  u WG        W-7        371326002 4/14/2015    Ce-144       5.24E+OO    8.68E+OO    2.84E+Ol  u WG        W-7        371326002 4/14/2015    Co-57       -l.50E+OO    l.14E+OO    3.31E+OO  u WG        W-7        371326002 4/14/2015    Co-58       -2.00E+OO    1.23E+OO    3.21E+OO  u WG        W-7        371326002 4/14/2015    Co-60        2.39E+OO    1.53E+OO    5.32E+OO  u WG        W-7        371326002 4/14/2015     Cr-51       5.86E+OO    l.14E+Ol    3.86E+Ol  u WG        W-7        371326002 4/14/2015    Cs-134       3.82E-01    1.03E+OO    3.54E+OO  u WG        W-7        371326002 4/14/2015    Cs-137      -2.90E+OO    1.57E+OO    3.85E+OO  u WG        W-7        371326002 4/14/2015     Fe-59       l.37E+OO    2.32E+OO    7.96E+OO  u WG        W-7        371326002 4/14/2015      H-3       -5.55E+Ol    4.98E+02    1.65E+03  u WG        W-7        371326002 4/14/2015     I-131      -2.48E+OO    2.32E+OO    7.00E+OO  u WG        W-7        371326002 4/14/2015     K-40        l.63E+Ol    1.33E+Ol    4.1 IE+Ol u WG        W-7        371326002 4/14/2015    La-140       3.25E+OO    2.06E+OO    7.54E+OO  u WG        W-7        371326002 4/14/2015    Mn-54        4.74E-Ol    l.30E+OO    3.91E+OO  u WG        W-7        371326002 4/14/2015    Nb-95        4.68E-Ol    1.28E+OO    4.37E+OO  u WG        W-7        371326002 4/14/2015    Ru-103       1.67E+OO    1.36E+OO    4.59E+OO  u WG        W-7        371326002 4/14/2015    Ru-106       1.54E+Ol    1.09E+Ol    3.67E+Ol  u WG        W-7        371326002 4/14/2015    Sb-124       8.32E-02    2.25E+OO    7.49E+OO  u WG        W-7        371326002 4/14/2015    Sb-125       5.63E+OO    3.42E+OO    1.15E+Ol  u WG        W-7        371326002 4/14/2015     Se-75      -2.41E+OO    1.76E+OO    5.27E+OO  u WG        W-7        371326002 4/14/2015    Th-228      4.'54E+OO    2.93E+OO    7.80E+OO  u D-114

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-7       371326002 4/14/2015   Zn-65        l.37E+OO    2.60E+OO    8.15E+OO u WG         W-7       371326002 4/14/2015    Zr-95      -6.95E-02    l.89E+OO    6.30E+OO u WG         W-8       371326003 4/15/2015   Ac-228       4.95E+OO    6.80E+OO    2.38E+Ol u WG         W-8       371326003 4/15/2015  Ag-108m      -l.31E+OO    l.58E+OO    4.85E+OO u WG         W-8       371326003 4/15/2015  Ag-llOm      -l.09E+OO    l.58E+OO    4.54E+OO u WG         W-8       371326003 4/15/2015   Ba-140      -l.16E+Ol    7.99E+OO    2.18E+Ol u WG         W-8       371326003 4/15/2015    Be-7        8.91E+OO    l.46E+Ol    4.86E+Ol u WG         W-8       371326003 4/15/2015   Ce-141       7.93E+OO    4.89E+OO    9.17E+OO u WG         W-8       371326003 4/15/2015   Ce-144      -l.52E+OO    l.26E+Ol    3.82E+Ol u WG         W-8       371326003 4/15/2015   Co-57       -6.90E-Ol    l.56E+OO    5.12E+OO u WG         W-8       371326003 4/15/2015   Co-58       -9.82E-Ol    l.44E+OO    4.27E+OO U WG         W-8       371326003 4/15/2015   Co-60        4.00E+OO    l.86E+OO    6.48E+OO U WG         W-8       371326003 4/15/2015    Cr-51      -l.32E+Ol    l.53E+Ol    4.75E+Ol U WG         W-8       371326003 4/15/2015   Cs-134      -l.09E+'OO   l.65E+OO    4.92E+OO U WG         W-8       371326003 4/15/2015   Cs-137      -4.35E-02    l.67E+OO    5.4IE+OO U WG         W-8       371326003 4/15/2015    Fe-59      -l.30E-Ol    2.89E+OO    9.59E+OO U WG         W-8       371326003 4/15/2015     H-3       -5.82E+02    4.78E+02    l.65E+03 U WG         W-8       371326003 4/15/2015    1-131      -5.65E+OO    3.22E+OO    8.37E+OO U WG         W-8       371326003 4/15/2015    K-40       -8.66E+OO    l.9IE+Ol    6.03E+Ol U WG         W-8       371326003 4/15/2015   La-140      -3.04E+OO    2.24E+OO    5.17E+OO U WG         W-8       371326003 4/15/2015   Mn-54       -7.66E-Ol    l.34E+OO    4.14E+OO U WG         W-8       371326003 4/15/2015   Nb-95        2.40E+OO    2.IOE+OO    6.97E+OO U WG         W-8       371326003 4/15/2015   Ru-103      -l.50E-Ol    l.76E+OO    5.70E+OO U WG         W-8       371326003 4/15/2015   Ru-106      -l.94E+Ol    l.63E+Ol    4.66E+Ol U WG        W-8        371326003 4/15/2015   Sb-124      -3.09E+OO    3.59E+OO    l.02E+Ol U WG         W-8       371326003 4/15/2015   Sb-125       2.26E+OO    4.82E+OO    l.61E+Ol U WG         W-8       371326003 4/15/2015    Se-75       5.79E-02    2.18E+OO    7.22E+OO U WG         W-8       371326003 4/15/2015   Th-228       3.76E+OO    3.80E+OO    l.14E+Ol U WG         W-8       371326003 4/15/2015    Zn-65       4.54E+OO    3.94E+OO    l.23E+Ol U WG         W-8       371326003 4/15/2015    Zr-95        l.49E-Ol   2.55E+OO    8.25E+OO U WG         W-10      371326004 4/15/2015   Ac-228       3.llE+OO    8.80E+OO    3.18E+Ol U WG         W-10      371326004 4/15/2015  Ag-108m      -l.08E+OO    l.33E+OO    4.04E+OO U WG         W-10      371326004 4/15/2015  Ag-llOm      -2.67E+OO    l.73E+OO    4.34E+OO U WG         W-10      371326004 4/15/2015   Ba-140       4.50E+OO    8.69E+OO    2.91E+Ol U WG         W-10      371326004 4/15/2015    Be-7       -l.45E+OO    l.50E+Ol    4.91E+Ol U WG         W-10      371326004 4/15/2015   Ce-141       3.05E-Ol    2.27E+OO    7.53E+OO. U WG         W-10      371326004 4/15/2015   Ce-144      -3.34E+OO    8.34E+OO    2.70E+Ol U WG         W-10      371326004 4/15/2015   Co-57       -l.08E+OO    l.15E+OO    3.43E+OO U WG         W-10      371326004 4/15/2015   Co-58       -l.19E+OO    l.73E+OO    5.36E+OO U WG         W-10      371326004 4/15/2015   Co-60        3.47E-02    l.64E+OO    5.50E+OO U WG         W-10      371326004 4/15/2015    Cr-51      -l.58E+OO    l.31E+Ol    4.38E+Ol U WG         W-10      371326004 4/15/2015   Cs-134       5.41E-02    l.85E+OO    6.19E+OO U WG         W-10      371326004 4/15/2015   Cs-137      -2.25E-Ol    2.26E+OO    6.93E+OO u WG         W-10      371326004 4/15/2015    Fe-59       l.38E+OO    3.50E+OO    l.18E+Ol u WG         W-10      371326004 4/15/2015     H-3       -9.18E+02    4.67E+02    l.67E+03 u WG         W-10      371326004 4/15/2015    1-131      -l.55E-Ol    2.76E+OO    9.20E+OO u WG         W-10      371326004 4/15/2015    K-40        3.62E+Ol    l.76E+Ol    2.80E+Ol UI WG         W-10      371326004 4/15/2015   La-140      -l.40E+OO    3.66E+OO    l.15E+Ol u WG         W-10      371326004 4/15/2015   Mn-54       -3.12E+OO    2.IOE+OO    5.74E+OO u WG         W-10      371326004 4/15/2015   Nb-95        3.31E+OO    2.08E+OO    7.22E+OO u D-115

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG          W-10     371326004 4/15/2015    Ru-103      l.47E+OO    l.88E+OO    6.0lE+OO u WG          W-10     371326004 4/15/2015    Ru-106      3.30&#xa3;-01    l.27E+Ol    4.lOE+Ol u WG          W-10     371326004 4/15/2015    Sb-124      5.72E+OO    4.77E+OO    l.73E+Ol u WG          W-10     371326004 4/15/2015    Sb-125     -5.42E+OO    4.40E+OO    1.27E+Ol u WG          W-10     371326004 4/15/2015     Se-75      3.60E+OO    2.14E+OO    6.90E+OO u WG          W-10     371326004 4/15/2015    Th-228      l.45E+OO    4.64E+OO    9.58E+OO u WG          W-10     371326004 4/15/2015    Zn-65      -5.78E+OO    4.40E+OO    1.17E+Ol u WG          W-10     371326004 4/15/2015     Zr-95      2.56E+OO    3.05E+OO    l.07E+Ol u WG          W-11     371326005 4/14/2015    Ac-228     -5.17E+OO    5.04E+OO    l.51E+Ol u WG          W-11     371326005 4/14/2015   Ag-108m     -8.77&#xa3;-01    l.26E+OO    3.96E+OO u WG          W-11     371326005 4114/2015   Ag-llOm     -1.19E+OO    1.1 lE+OO   3.14E+OO u WG          W-11     371326005 4/14/2015    Ba-140     4.65E+OO     6.54E+OO    2.20E+Ol u WG          W-11     371326005 4/14/2015     Be-7       1.09E+Ol    l.25E+Ol    4.19E+Ol u WG          W-11     371326005 4/14/2015    Ce-141      7.78E-01    2.50E+OO    8.llE+OO u WG          W-11     371326005 4/14/2015    Ce-144      3.17E+OO    9.82E+OO    3.05E+Ol u WG          W-11     371326005 4/14/2015    Co-57       7.55E-01    1.28E+OO    4.20E+OO u WG          W-11     371326005 4/14/2015    Co-58      -1.18E+OO    1.15E+OO    3.43E+OO u WG          W-11     371326005 4/14/2015    Co-60       2.00E+OO    l.37E+OO    4.82E+OO u WG          W-11     371326005 4/14/2015     Cr-51     -2.08E+OO    l.18E+Ol    3.91E+Ol u WG          W-11     371326005 4/14/2015    Cs-134      5.87E-01    l.43E+OO    4.67E+OO u WG          W-11     371326005 4/14/2015    Cs-137      8.85E-01    l.29E+OO    4.30E+OO u WG          W-11     371326005 4/14/2015     Fe-59     -3.34E+OO    2.44E+OO    6.51E+OO u WG          W-11     371326005 4/14/2015      H-3      -2.55E+02    4.97E+02    l.67E+03 U WG          W-11     371326005 4/14/2015     1-131     -1.71E+OO    2.66E+OO    8.49E+OO U WG          W-11     371326005 4/14/2015     K-40       2.40E+Ol    2.06E+Ol    4.37E+Ol U WG          W-11     371326005 4/14/2015    La-140      4.63E-01    l.98E+OO    6.54E+OO U WG          W-11     371326005 4/14/2015    Mn-54       6.96E-01    1.03E+OO    3.61E+OO U WG          W-11     371326005 4/14/2015    Nb-95       l.65E+OO    l.31E+OO    4.55E+OO U WG          W-11     371326005 4/14/2015    Ru-103     -3.49E+OO    l.60E+OO    3.80E+OO U WG          W-11     371326005 4/14/2015    Ru-106      8.69E+OO    9.88E+OO    3.34E+Ol u WG
* W-11     371326005 4/14/2015    Sb-124     -1.07E+OO    2.42E+OO    7.58E+OO u WG          W-11     371326005 4/14/2015    Sb-125      8.0lE-01    3.68E+OO    l.23E+Ol u WG          W-11     371326005 4/14/2015     Se-75      4.20E-01    l.66E+OO    5.47E+OO u WG          W-11     371326005 4/14/2015    Th~228      9.15E+OO    4.43E+OO    l.04E+Ol u WG          W-11     371326005 4/14/2015     Zn-65      4.57E-01    2.61E+OO    7.64E+OO u WG          W-11     371326005 4/14/2015     Zr-95      l.80E+OO    2.57E+OO    8.49E+OO u WG          W-12     371326006 4/14/2015    Ac-228     -2.80E+OO    7.23E+OO    2.12E+Ol u WG          W-12     371326006 4/14/2015   Ag-108m     -3.21&#xa3;-01    l.22E+OO    3.88E+OO u WG          W-12     371326006 4/14/2015   Ag-llOm     -8.21&#xa3;-01    1.21E+OO    3.81E+OO u WG          W-12     371326006 4/14/2015    Ba-140     -3.04E+OO    7.68E+OO    2.18E+Ol u WG          W-12     371326006 4/14/2015     Be-7       6.99E+OO    l.03E+Ol    3.38E+Ol u WG          W-12     371326006 4/14/2015    Ce-141     -l.30E+OO    2.48E+OO    7.89E+OO u WG          W-12     371326006 4114/2015    Ce-144     -l.54E+Ol    9.69E+OO    2.80E+Ol u WG          W-12     371326006 4/14/2015     Co-57      1.12E+OO    1.19E+OO    3.92E+OO u WG          W-1~     371326006 4/14/2015     Co-58     -l.92E+OO    l.38E+OO    3.82E+OO u WG          W-12     371326006 4/14/2015     Co-60      -4.49&#xa3;-01   l.33E+OO    3.96E+OO u WG          W-12     371326006 4/14/2015     Cr-51      2.34E+Ol    l.36E+Ol    4.38E+Ol u WG          W-12     371326006 4/14/2015    Cs-134      l.78E+OO    l.55E+OO    5.16E+OO u WG          W-12     371326006 4114/2015    Cs-137     -4.30&#xa3;-01    l.59E+OO    4.88E+OO u WG          W-12     371326006 4/14/2015     Fe-59     -l.59E+OO    3.24E+OO    6.88E+OO u D-116

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-12      371326006 4/14/2015      H-3       -4.23E+02    4.92E+02    l.68E+03 u WG         W-12      371326006 4/14/2015     1-131       -8.34E-Ol   2.62E+OO    8.46E+OO u WG         W-12      371326006 4/14/2015     K-40        l.14E+Ol    2.14E+Ol    4.56E+Ol u WG         W-12      371326006 4/14/2015    La-140       -4.89E-Ol   2.61E+OO    8.53E+OO u WG         W-12      371326006 4/14/2015    Mn-54         l.87E-01   l.29E+OO    4.20E+OO u WG         W-12      371326006 4/14/2015    Nb-95        -9.81E-01   l.60E+OO    4.55E+OO u WG         W-12      371326006 4/14/2015    Ru-103       -l.40E-01   l.37E+OO    4.60E+OO u WG         W-12      371326006 4/14/2015    Ru-106      -4.57E+OO    l.13E+Ol    3.54E+Ol u WG*        W-12      371326006 4/14/2015    Sb-124       6.02E+OO    3.40E+OO    l.19E+Ol u WG         W-12      371326006 4/14/2015    Sb-125       2.28E+OO    3.66E+OO    l.21E+Ol u WG         W-12      371326006 4/14/2015     Se-75       -l.61E-Ol   l.69E+OO    5.63E+OO u WG        W-12       371326006 4/14/2015    Th-228       9.lOE+OO    3.79E+OO    9.lOE+OO UI WG         W-12      371326006 4/14/2015    Zn-65        3.29E-Ol    2.71E+OO    9.00E+OO u WG         W-12      371326006 4/14/2015     Zr-95       2.09E+OO    2.40E+OO    8.07E+OO u WG         W-13      371326007 4/14/2015    Ac-228       3.92E+OO    5.50E+OO    l.67E+Ol u WG         W-13      371326007 4/14/2015   Ag-108m        4.73E-Ol   l.04E+OO    3.55E+OO u WG         W-13      371326007 4/14/2015   Ag-llOm      -l.28E+OO    l.23E+OO    3.60E+OO u WG        W-13       371326007 4/14/2015    Ba-140      -l.06E+Ol    7.23E+OO    l.95E+Ol u WG        W-13       371326007 4/14/2015     Be-7        5.50E+OO    1.1 lE+Ol   3.76E+Ol u WG        W-13       371326007 4/14/2015    Ce-141       l.51E+OO    2.39E+OO    8.llE+OO u WG        W-13       371326007 4/14/2015    Ce-144       8.67E+OO    9.lOE+OO    3.07E+Ol u WG         W-13      371326007 4/14/2015    Co-57       -1.lOE+OO    l.19E+OO    3.85E+OO u WG         W-13      371326007 4/14/2015    Co-58         2.17E-Ol   l.21E+OO    4.lOE+OO u WG        W-13       371326007 4/14/2015    Co-60        8.75E-Ol    l.61E+OO    4.87E+OO u WG        W-13       371326007 4/14/2015     Cr-51       4.57E+OO    l.29E+Ol    4.20E+Ol u WG        W-13       371326007 4/14/2015    Cs-134       2.23E-01    l.27E+OO    4.31E+OO u WG        W-13       371326007 4/14/2015    Cs-137       l.96E+OO    l.26E+OO    4.23E+OO u WG        W-13       371326007 4/14/2015     Fe-59      -6.18E-01    2.63E+OO    8.46E+OO u WG         W-13      371326007 4/14/2015      H-3       -7.13E+02    4.84E+02    l.69E+03 u WG        W-13       371326007 4/14/2015     1-131      -2.07E+OO    2.55E+OO    7.70E+OO u WG        W-13       371326007 4/14/2015     K-40        7.26E+OO    l.85E+Ol    6.03E+Ol u WG        W-13       371326007 4/14/2015    La-140      -7.53E-01    2.31E+OO    7.40E+OO u WG        W-13       371326007 4/14/2015    Mn-54         8.96E-01   l.39E+OO    4.22E+OO u WG         W-13      371326007 4/14/2015    Nb-95        5.02E-01    l.29E+OO    4.24E+OO u WG         W-13      371326007 4/14/2015    Ru-103       l.63E+OO    1.57E+OO    4.72E+OO u WG        W-13       371326007 4/14/2015    Ru-106       1.28E+Ol    l.18E+Ol    3.98E+Ol u WG        W-13       371326007 4/14/2015    Sb-124      -3.99E+OO    4.46E+OO    l.07E+Ol u WG        W-13       371326007 4/14/2015    Sb-125       8.68E+OO    3.84E+OO    l.22E+Ol u WG        W-13       371326007 4/14/2015     Se-75      ~l.25E+OO    l.73E+OO    5.41E+OO u WG        W-13       371326007 4/14/2015    Th-228       l.08E+OO    3.77E+OO    8.15E+OO u WG        W-13       371326007 4/14/2015    Zn-65       -3.84E+OO    3.36E+OO    7.80E+OO u WG        W-13       371326007 4/14/2015     Zr-95       6.43E-01    2.26E+OO    6.47E+OO u WG        W-14       371326008 4/14/2015    Ac-228       4.17E-01    4.67E+OO    l.53E+Ol u WG        W-14       371326008 4/14/2015   Ag-108m       2.41E+OO    l.15E+OO    3.65E+OO u WG        W-14       371326008 4/14/2015   Ag-llOm      -6.14E-02    l.02E+OO    3.41E+OO u WG        W-14       371326008 4/14/2015    Ba-140       8.06E-01    5.82E+OO    l.89E+Ol u WG        W-14       371326008 4/14/2015     Be-7       -7.0SE-01    1.07E+Ol    3.44E+Ol u WG        W-14       371326008 4/14/2015    Ce-141      -2.61E+OO    2.35E+OO    6.60E+OO u WG        W-14       371326008 4/14/2015    Ce-144       l.40E+OO    7.35E+OO    2.39E+Ol u WG        W-14       371326008 4/14/2015    Co-57         l.OSE-01   l.OOE+OO    3.27E+QO u D-117

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC      STD.DEV.      MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)     (pCi/L)   (pCi/L)
WG         W-14      371326008 4/14/2015    Co-58        -6.32E-01. l.lOE+OO   3.47E+OO u WG         W-14      371326008 4/14/2015     Co-60        3.04E-02    9.40E-01   3.15E+OO u WG         W-14      371326008 4114/2015     Cr-51      -1.00E+Ol     1.0lE+Ol   3.13E+Ol u WG         W-14      371326008 4/14/2015    Cs-134        5.07E-01    l.19E+OO   4.03E+OO u WG         W-14      371326008 4/14/2015    Cs-137      -1.08E+OO     l.14E+OO   3.51E+OO u WG         W-14      371326008 4/14/2015     Fe-59       l.32E+OO     2.24E+OO   7.53E+OO u WG         W-14      371326008 4/14/2015      H-3       -8.83E+02     4.76E+02   1.69E+03 u WG         W-14      371326008 4/14/2015     I-131       1.02E+OO
* 2.06E+OO   6.89E+OO u WG         W-14      371326008 4/14/2015     K-40       -8.lOE+OO     l.39E+Ol   4.60E+Ol u WG         W-14      371326008 4/14/2015    La-140       -3.88E-01    l.90E+OO   6.llE+OO u WG         W-14      371326008 4/14/2015    Mn-54         4.37E-01    9.73E-01   3.30E+OO u WG         W-14      371326008 4/14/2015    Nb-95         9.40E-02    l.44E+OO   4.16E+OO u WG         W-14      371326008 4/14/2015    Ru-103       4.61E-01     l.26E+OO   4.15E+OO u WG         W-14      371326008 4/14/2015    Ru-106       l.39E+OO     9.50E+OO   3.23E+Ol u WG         W-14      371326008 4/14/2015    Sb-124       l.89E+OO     2.83E+OO   9.77E+OO u WG         W-14      371326008 4/14/2015    Sb-125      -4.43E+OO     3.02E+OO   8.46E+OO u WG         W-14      371326008 4/14/2015     Se-75       2.15E-01     l.40E+OO   4.73E+OO u WG         W-14      371326008 4/14/2015    Th-228       4.77E+OO     2.96E+OO   6.79E+OO u WG         W-14      371326008 4/14/2015    Zn-65       -3.56E+OO     2.93E+OO   8.20E+OO u WG         W-14      371326008 4/14/2015     Zr-95      -5.91E-01     2.16E+OO   6.37E+OO u WG         W-15      371326009 4115/2015    Ac-228       1.15E+Ol     l.08E+Ol   l.83E+Ol u WG         W-15      371326009 4/15/2015   Ag-108m       2.04E+OO     l.36E+OO   3.95E+OO u WG         W-15      371326009 4/15/2015   Ag-llOm      -2.59E+OO     l.47E+OO   3.94E+OO u WG         W-15      371326009 4/15/2015    Ba-140      -8.15E+OO     8.13E+OO   2.08E+Ol u WG         W-15      371326009 4/15/2015     Be-7       -2.lOE+Ol     l.24E+Ol   3.46E+Ol u WG         W-15      371326009 4/15/2015    Ce-141       3.66E+OO     2.47E+OO   7.20E+OO u WG         W-15      371326009 4/15/2015    Ce-144      -8.88E+OO     9.56E+OO   2.57E+Ol u WG         W-15      371326009 4/15/2015    Co-57        l.75E+OO     l.09E+OO   3.44E+OO u WG         W-15      371326009 4/15/2015    Co-58       -1.l lE-01    l.44E+OO   4.27E+OO u WG         W-15      371326009 4115/2015    Co-60        l.67E+OO     1.62E+OO   4.88E+OO u WG         W-15      371326009 4/15/2015     Cr-51      -2.77E+OO     1.lOE+Ol   3.66E+Ol u WG         W-15    . 371326009 4/15/2015    Cs-134       6.92E+OO     2.38E+OO   5.lOE+OO UI WG         W-15      371326009 4/15/2015    Cs-137       2.21E+OO     l.49E+OO   4.88E+OO u WG         W-15      371326009 4/15/2015     Fe-59      -l.79E+OO     3.61E+OO   9.66E+OO u WG         W-15      371326009 4/15/2015      H-3       -8.30E+02     4.70E+02   1.66E+03 u WG         W-15      371326009 4/15/2015     I-131       l.64E+OO     2.29E+OO   7.71E+OO u WG         W-15      371326009 4/15/2015     K-40        1.69E+Ol     2.26E+Ol   5.21E+Ol u WG         W-15      371326009 4/15/2015    La-140       3.0lE+OO     2.35E+OO   8.23E+OO u WG         W-15      371326009 4/15/2015    Mn-54       -1.28E+OO     l.33E+OO   4.12E+OO u WG         W-15      371326009 4/15/2015    Nb-95        l.03E+OO     l.75E+OO   5.18E+OO u WG        W-15       371326009 4/15/2015    Ru-103       4.41E-01     l.79E+OO   5.12E+OO u WG         W-15      371326009 4/15/2015    Ru-106       6.18E+OO     l.25E+Ol   4.15E+Ol u WG         W-15      371326009 4/15/2015    Sb-124      -1.55E+OO     2.72E+OO   8.46E+OO u WG         W-15      371326009 4/15/2015    Sb-125      -2.48E+OO     4.09E+OO   1.18E+Ol u WG         W-15      371326009 4/15/2015     Se-75       7.08E-01     l.95E+OO   5.73E+OO u WG         W-15      371326009 4/15/2015    Th-228       l.48E+Ol     5.94E+OO   9.12E+OO UI WG         W-15      371326009 4/15/2015    Zn-65       -3.50E+OO     3.32E+OO   9.93E+OO u WG         W-15      371326009 4115/2015     Zr-95      -2.33E+OO     2.69E+OO   8.llE+OO u WG        MW-20      371326010 4/15/2015    Ac-228      -3.46E+OO     6.43E+OO   l.49E+Ol u WG         MW-20     371326010 4115/2015   Ag-108m       l.21E+OO     9.93E-01   3.24E+OO u D-118

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         MW-20     371326010 4/15/2015  Ag-llOm       7.56E-Ol    l.OIE+OO    3.40E+OO u WG         MW-20     371326010 4115/2015   Ba-140       5.94E+OO    5.16E+OO    l.75E+Ol u WG         MW-20     371326010 4/15/2015    Be-7       -7.86E+OO    9.IOE+OO    2.87E+Ol u WG         MW-20     371326010 4/15/2015   Ce-141      -3.38E+OO    2.02E+OO    5.61E+OO u WG         MW-20     371326010 4/15/2015   Ce-144      -1.00E+Ol    7.35E+OO    2.15E+Ol u WG         MW-20     371326010 4/15/2015   Co-57       -9.76E-OI    9.85E-Ol    3.02E+OO u WG         MW-20     371326010 4/15/2015   Co-58       -2.58E+OO    l.22E+OO    3.0lE+OO u WG         MW-20     371326010 4/15/2015   Co-60        1.40E+OO    l.31E+OO    4.56E+OO u WG         MW-20     371326010 4/15/2015    Cr-51       6.12E+OO    l.07E+Ol    3.56E+Ol u WG         MW-20     371326010 4/15/2015   Cs-134      -7.51E-Ol    l.19E+OO    3.0IE+OO u WG         MW-20     371326010 4/15/2015   Cs-137      -6.3IE-Ol    l.15E+OO    3.61E+OO u WG         MW-20     371326010 4/15/2015    Fe-59      -l.22E-Ol    2.18E+OO    7.09E+OO u WG         MW-20     371326010 4/15/2015     H-3       -l.64E+02    5.23E+02    l.74E+03 u WG         MW-20     371326010 4/15/2015    1-131       2.30E+OO    l.85E+OO    6.09E+OO u WG         MW-20     371326010 4/15/2015    K-40        2.46E+Ol    2.09E+Ol    3.31E+Ol u WG         MW-20     371326010 4/15/2015   La-140       l.32E-Ol    2.00E+OO    6.60E+OO u WG         MW-20     371326010 4115/2015   Mn-54        8.98E-Ol    l.21E+OO    3.65E+OO u WG         MW-20     371326010 4/15/2015   Nb-95        5.70E-Ol    l.17E+OO    3.85E+OO u WG         MW-20     371326010 4/15/2015   Ru-103      -6.83E-01    l.07E+OO    2.90E+OO u WG         MW-20     371326010 4/15/2015   Ru-106       l.34E+OO    9.07E+OO    3.0IE+Ol u WG         MW-20     371326010 4/15/2015   Sb-124       3.30E+OO    3.25E+OO    l.12E+Ol u WG         MW-20     371326010 4/15/2015   Sb-125       5.67E+OO    3.32E+OO    l.06E+Ol u WG         MW-20     371326010 4/15/2015    Se-75      -2.79E+OO    l.57E+OO    4.36E+OO u WG         MW-20     371326010 4/15/2015   Th-228       l.68E+OO    2.31E+OO    7.44E+OO U WG         MW-20     371326010 4/15/2015    Zn-65        l.07E-Ol   2.57E+OO    8.42E+OO U WG         MW-20     371326010 4/15/2015    Zr-95      -4.48E+OO    2.96E+OO    6.02E+OO U WG         MW-21     371326011 4115/2015   Ac-228      -l.07E+Ol    5.75E+OO    l.24E+Ol U WG         MW-21     371326011 4/15/2015  Ag-108m       7.44E-Ol    9.30E-01    3.0SE+OO U WG         MW-21     371326011 4/15/2015  Ag-llOm      -4.IOE-01    9.63E-Ol    3.12E+OO U WG         MW-21     371326011 4/15/2015   Ba-140      -2.00E-01    5.86E+OO    l.63E+Ol U WG         MW-21     371326011 4/15/2015    Be-7       -5.65E+OO    9.04E+OO    2.79E+Ol U WG         MW-21     371326011 4/15/2015   Ce-141       9.54E-01    2.17E+OO    6.31E+OO U WG         MW-21     371326011 4/15/2015   Ce-144       2.69E+OO    7.06E+OO    2.31E+Ol U WG         MW-21     371326011 4115/2015    Co-57       3.03E-Ol    9.93E-01    3.25E+OO U WG         MW-21     371326011 4/15/2015    Co-58      -2.16E+OO    l.14E+OO    2.87E+OO U WG         MW-2*1    371326011 4/15/2015   Co-60       -l.93E-Ol    l.04E+OO    3.38E+OO U WG         MW-21     371326011 4/15/2015    Cr-51      -5.48E+OO    l.09E+Ol    3.07E+Ol U WG         MW-21     371326011 4/15/2015   Cs-134      -8.36E-Ol    l.14E+OO    3.51E+OO U WG         MW-21     371326011 4/15/2015   Cs-137       6.97E-02    l.03E+OO    3.44E+OO U WG         MW-21     371326011 4/15/2015    Fe-59       6.18E+OO    3.88E+OO    7.65E+OO U WG         MW-21     371326011 4/15/2015     H-3       -l.15E+03    4.77E+02    l.73E+03 U WG         MW-21     371326011 4/15/2015    1-131       1.1 IE+OO   l.61E+OO    5.40E+OO U WG         MW-21     371326011 4/15/2015    K-40        l.OSE+OO    l.73E+Ol    3.16E+Ol U WG         MW-21     371326011 4/15/2015   La-140       l.92E+OO    l.69E+OO    5.87E+OO U WG         MW-21     371326011 4/15/2015   Mn-54        7.36E-Ol    9.07E-Ol    3.0SE+OO U WG         MW-21     371326011 4/15/2015   Nb-95       -l.33E+OO    1.32E+OO    3.35E+OO U WG         MW-21     371326011 4/15/2015   Ru-103      -l.71E+OO    l.42E+OO    3.51E+OO U WG         MW-21     371326011 4/15/2015   Ru-106       l.33E+Ol    9.90E+OO    3.35E+Ol U WG         MW-21     371326011 4/15/2015   Sb-124      -2.44E+OO    2.72E+OO    7.81E+OO U WG         MW-21     371326011 4/15/2015   Sb-125       3.57E+OO    3.07E+OO    l.OIE+Ol U D-119

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE       NUCLIDE          (pCi/L)   (pCi/L)    (pCi/L)
WG         MW-21     371326011 4/15/2015      Se-75       4.44E-Ol   1.40E+OO    4.73E+OO u WG         MW-21     371326011 4/15/2015     Th-228      2.24E+OO    2.93E+OO    6.20E+OO u WG         MW-21     371326011 4/15/2015      Zn-65       l.37E-02   2.45E+OO    7.06E+OO u WG         MW-21     371326011 4/15/2015      Zr-95       l.39E+OO   2.04E+OO    6.88E+OO u WG         W-2       371455001 4/16/2015     Ac-228      3.41E+OO    5.23E+OO    1.78E+Ol u WG         W-2       371455001 4/16/2015    Ag-108m      -9.71E-02   l.19E+OO    3.44E+OO u WG         W-2       371455001 4/16/2015    Ag-llOm      1.80E+OO    l.27E+OO    4.31E+OO u WG         W-2       371455001 4/16/2015     Ba-140      3.18E+OO    6.74E+OO    2.29E+Ol u WG         W-2       371455001 4/16/2015      Be-7      -1.lOE+Ol    1.14E+Ol    3.49E+Ol u WG         W-2       371455001 4/16/2015     Ce-141      2.99E+OO    2.53E+OO    8.38E+OO u WG         W-2       371455001 4116/2015     Ce-144     -2.88E+OO    8.71E+OO    2.85E+Ol u WG         W-2       371455001 4/16/2015     Co-57       1.57E+OO    l.18E+OO    3.88E+OO u WG         W-2       371455001 4116/2015     Co-58        2.79E-02   1.21E+OO    3.93E+OO u WG         W-2       371455001 4/16/2015     Co-60       3.07E+OO    1.40E+OO    4.62E+OO u WG         W-2       371455001 4/16/2015      Cr-51      5.52E+OO    l.37E+Ol    4.48E+Ol u WG         W-2       371455001 4/16/2015     Cs-134      -4.87E-Ol   l.31E+OO    4.llE+OO u WG         W-2       371455001 4116/2015     Cs-137       7.88E-01   l.37E+OO    4.60E+OO u WG        W-2        371455001 4/16/2015      Fe-59     -l.36E+OO    2.56E+OO    7.92E+OO u WG        W-2        371455001 4/16/2015       H-3      -5.46E+02    4.12E+02    l.44E+03 u WG        W-2        371455001 4/16/2015      I-131      2.46E+OO    3.23E+OO    1.llE+Ol u WG         W-2       371455001 4/16/2015      K-40       3.37E+Ol    1.95E+Ol    3.17E+Ol UI WG         W-2       371455001 4/16/2015     La-140       8.69E-01   2.51E+OO    8.45E+OO. U WG         W-2       371455001 4/16/2015     Mn-54       -8.lSE-01   1.29E+OO    3.93E+OO U WG        W-2        371455001 4/16/2015     Nb-95       2.50E-Ol    l.36E+OO    4.46E+OO U WG        W-2        371455001 411612015     Ru-103     -l.54E+OO    1.58E+OO    4.84E+OO U WG         W-2       371455001 4/16/2015     Ru-106      8.43E+OO    1.02E+Ol    3.48E+Ol U WG        W-2        371455001 4/16/2015     Sb-124     -3.89E-01    2.78E+OO    8.82E+OO U WG         W-2       371455001 4/16/2015     Sb-125      4.14E-01    3.79E+OO    1.llE+Ol U WG        W-2        371455001 4/16/2015      Se-75       8.49E-01   l.89E+OO    6.18E+OO U WG        W-2        371455001 4/16/2015     Th-228      2.33E+OO    2.88E+OO    9.27E+OO U WG        W-2        371455001 4/16/2015     Zn-65      -4.68E+OO    3.07E+OO    8.22E+OO U WG        W-2        371455001 4/16/2015 . Zr-95     -6.57E-01    2.35E+OO    7.13E+OO U WG        W-3        371455002 4/19/2015     Ac-228      l.37E+OO    4.55E+OO    l.81E+Ol U WG         W-3       371455002 4/19/2015    Ag-108m     -5.12E-01    1.14E+OO    3.71E+OO U WG        W-3        371455002 4/19/2015    Ag-llOm     -3.70E-01    l.07E+OO    3.39E+OO U WG        W-3        371455002 4/19/2015     Ba-140     -6.71E+OO    7.72E+OO    2.37E+Ol U WG        W-3        371455002 4/19/2015      Be-7       2.33E+Ol    l.29E+Ol    4.27E+Ol U WG        W-3        371455002 4/19/2015     Ce-141      2.87E+OO    2.95E+OO    8.70E+OO U WG        W-3        371455002 4/19/2015     Ce-144      l.70E+OO    9.69E+OO    3.00E+Ol U WG         W-3       371455002 4/19/2015     Co-57       6.17E-Ol    1.16E+OO    3.88E+OO U WG        W-3        371455002 4/19/2015     Co-58      -l.74E+OO    l.50E+OO    4.27E+OO U WG        W-3        371455002 4/19/2015     Co-60       2.29E+OO    l.43E+OO    5.02E+OO U WG        W-3        371455002 411912015      Cr-51      l.26E+Ol    1.SOE+Ol    4.89E+Ol u WG        W-3        371455002 411912015     Cs-134      l.55E+OO    l.31E+OO    4.49E+OO u WG        W-3        371455002 4/19/2015     Cs-137      5.60E-01    1.33E+OO    4.44E+OO u WG        W-3        371455002 4119/2015      Fe-59     -3.49E+OO    3.20E+OO    9.34E+OO u WG        W-3        371455002 4119/2015       H-3      -2.98E+02    4.13E+02    l.41E+03 u WG        W-3        371455002 4/19/2015      I-131      l.25E+OO    2.98E+OO    1.02E+Ol u WG        W-3        371455002 4/19/2015      K-40       8.25E+OO    1.62E+Ol    4.15E+Ol u WG        W-3        371455002 4/19/2015     La-140      6.82E+OO    2.95E+OO    9.80E+OO u D-120

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                     CONC      STD.DEV.       MDC      FLAGS TYPE      STATION        LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-3        371455002 4/19/2015   Mn-54       -2.SOE-01    1.28E+OO    4.07E+OO u WG         W-3        371455002 4/19/2015   Nb-95       -l.OOE-02    l.31E+OO    4.24E+OO u WG         W-3        371455002 4/19/2015   Ru-103      -6.47E-02    l.57E+OO    5.20E+OO u WG         W-3        371455002 4/19/2015   Rucl06      -l.60E+Ol    1.04E+Ol    2.76E+Ol u WG         W-3        371455002 4/19/2015   Sb-124      -4.SlE-01    2.90E+OO    9.16E+OO u WG         W-3        371455002 4/19/2015   Sb-125      -l.54E+OO    3.85E+OO    l.18E+Ol u WG         W-3        371455002 4/19/2015    Se-75      -l.42E+OO    2.16E+OO    5.78E+OO u WG         W-3        371455002 4/19/2015   Th-228       3.67E+OO    3.18E+OO    1.0lE+Ol u WG         W-3        371455002 4/19/2015    Zn-65       4.34E+OO    2.38E+OO    7.94E+OO u WG         W-3        371455002 4/19/2015    Zr-95      -2.50E+OO    2.75E+OO    7.91E+OO u WG         W-9        371455003 4/19/2015   Ac-228       7.18E+OO    l.03E+Ol    2.43E+Ol u WG         W-9        371455003 4/19/2015  Ag-108m      -l.36E+OO    1.64E+OO    5.05E+OO u WG         W-9        371455003 4/19/2015  Ag-llOm      -2.44E+OO    l.55E+OO    4.03E+OO u WG         W-9        371455003 4/19/2015   Ba-140      -2.15E+OO    8.63E+OO    2.76E+Ol u WG         W-9        371455003 4/19/2015    Be-7       -3.87E+OO    l.51E+Ol    4.17E+Ol u WG         W-9        371455003 4/19/2015   Ce-141      -4.27E+OO    4.0lE+OO    l.06E+Ol u WG         W-9        371455003 4/19/2015   Ce-144       2.51E+OO    1.25E+Ol    3.97E+Ol u WG         W-9      . 371455003 4/19/2015    Co-57      -2.86E+OO . 1.83E+OO    4.75E+OO u WG         W-9        371455003 4/19/2015    Co-58      -2.ss:g-01   l.61E+OO    5.lOE+OO u WG         W-9        371455003 4/19/2015    Co-60      -5.34E-Ol    l.59E+OO    5.09E+OO u WG         W-9        371455003 4/19/2015    Cr-51      -2.92E+Ol    l.70E+Ol    4.67E+Ol u WG         W-9        371455003 4/19/2015   Cs-134       9.05E-01    l.SOE+OO    5.27E+OO u WG         W-9        371455003 4/19/2015   Cs-137       1.79E+OO    l.59E+OO    5.38E+OO u WG         W-9        371455003 4/19/2015    Fe-59      -4.79E+OO    3.44E+OO    9.0lE+OO u WG         W-9        371455003 4/19/2015     H-3       -3.77E+02    4.14E+02    1.42E+03 u WG         W-9        371455003 4/19/2015    I-131       6.45E+OO    4.24E+OO    l.30E+Ol u WG         W-9        371455003 4/19/2015    K-40       -l.37E+Ol    l.94E+Ol    6.90E+Ol u WG         W-9        371455003 4/19/2015   La-140       l.86E+OO    2.85E+OO    9.93E+OO u WG         W-9        371455003 4/19/2015   Mn-54       -l.97E+OO    2.23E+OO    5.84E+OO u WG         W-9        371455003 4/19/2015   Nb-95        l.18E+OO    l.60E+OO    5.37E+OO u WG         W-9        371455003 4/19/2015   Ru-103      -9. lSE-01   2.lOE+OO    5.67E+OO u WG         W-9        371455003 4/19/2015   Ru-106      -l.46E+Ol    l.34E+Ol    3.81E+Ol u WG         W-9        371455003 4h9!2015    Sb-124      -6.87E+OO    5.06E+OO    l.35E+Ol u WG         W-9        371455003 4/19/2015   Sb-125       4.63E-Ol    4.37E+OO    l.44E+Ol u WG         W-9        371455003 4/19/2015    Se-75       1.22E+OO    2.20E+OO    7.39E+OO u WG         W-9        37i455003 4/19/2015   Th-228       6.69E+OO    4.37E+OO    l.15E+Ol u WG         W-9        371455003 4/19/2015    Zn-65      -2.SSE+OO    3.05E+OO    8.99E+OO u WG         W-9        371455003 4/19/2015    Zr-95      -1.70E+OO    2.75E+OO    8.29E+OO u WG         SG-1       371455004 4/19/2015   Ac-228       2.75E-Ol    6.20E+OO    2.12E+Ol u WG         SG-1       371455004 4/19/2015  Ag-108m       4.78E-Ol    l.37E+OO    4.52E+OO u WG         SG-1       371455004 4/19/2015  Ag-llOm       3.24E-Ol    l.30E+OO    4.34E+OO u WG         SG-1       371455004 4/19/2015   ALPHA        7.92E-Ol    1.1 lE+OO   3.49E+OO u WG         SG-1       371455004 4/19/2015   Ba-140      -1.0lE+OO    9.96E+OO    3.lOE+Ol u WG         SG-1       371455004 4/19/2015    Be-7        l.24E+Ol    l.45E+Ol    4.82E+Ol u WG         SG-1       371455004 4/19/2015    BETA        5.33E+OO    9.55E-Ol    2.43E+OO WG         SG-1       371455004 4/19/2015   Ce-141      -l.22E+OO    3.64E+OO    l.06E+Ol u WG         SG-1       371455004 4/19/2015   Ce-144       l.43E+OO*   l.30E+Ol    3.70E+Ol u WG         SG-1       371455004 4/19/2015    Co-57      -2.68E-Ol    l.51E+OO    4.67E+OO u WG         SG-1       371455004 4/19/2015    Co-58       9.56E-02    3.42E+OO    5.54E+OO u WG         SG-1       371455004 4/19/2015    Co-60       2.79E-Ol    2.05E+OO    5.73E+OO u D-121

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN        DATE      NUCLIDE          (pCi/L)     (pCi/L)   (pCi/L)
WG          SG-1     371455004   4/19/2015     Cr-51      -2.48E+Ol     2.04E+Ol   5.llE+Ol u WG        . SG-1     371455004   4/19/2015    Cs-134       l.OOE+OO     3.25E+OO   5.93E+OO u WG          SG-1     371455004   4/19/2015    Cs-137      -9.57E-01     l.52E+OO   4.74E+OO u WG          SG-1     371455004   4/19/2015     Fe-59       2.09E+OO     2.86E+OO   9.87E+OO u WG          SG-1     371455004   4/19/2015      H-3       -l.74E+02     4.23E+02   l.42E+03 u WG          SG-1     371455004   4/19/2015     I-131      -2.70E+OO     3.20E+OO   9.80E+OO u WG          SG-1     371455004   4/19/2015     K-40        1:94E+OO     l.91E+Ol   7.0lE+Ol u WG          SG-1     371455004   4/19/2015    La-140      -4.17E+OO     2.97E+OO   7.68E+OO u WG          SG-1     371455004   4/19/2015    Mn-54       -4.45E-01     l.61E+OO   5.12E+OO u WG          SG-1     371455004   4/19/2015     Nb-95      -4.91E-02     l.90E+OO   6.19E+OO u WG          SG-1     371455004   4/19/2015    Ru-103       9.49E-01     l.67E+OO   5.69E+OO u WG          SG-1     371455004   4/19/2015    Ru-106       1.51E+OO     l.44E+Ol   4.79E+Ol u WG          SG-1     371455004   4/19/2015    Sb-124      -6.60E+OO     3.61E+OO   7.53E+OO u WG          SG-1     371455004   4/19/2015    Sb-125      -3.58E+OO     4.05E+OO   l.22E+Ol u WG          SG-1     371455004   4/19/2015     Se-75       l.96E+OO     2.36E+OO   7.94E+OO u WG          SG-1     371455004   4/19/2015    Th-228       4.66E+OO     4.03E+OO   l.19E+Ol u WG          SG-1     371455004   4/19/2015     Zn-65      -6.51E+OO     3.81E+OO   9.67E+OO u WG          SG-1     371455004   4/19/2015. Zr-95       8.03E-01     3.28E+OO   l.09E+Ol u WG          SG-2     371455005   4/19/2015    Ac-228      -5.52E-01     5.38E+OO   l.72E+Ol u WG          SG-2     371455005   4/19/2015   Ag-108m      -6.69E-02     l.16E+OO   3.76E+OO u WG          SG-2     371455005   4/19/2015   Ag-llOm       6.72E-01     l.16E+OO   3.98E+OO u WG          SG-2     371455005   4/19/2015    ALPHA        4.35E-01     l.llE+OO   3.56E+OO u WG          SG-2     371455005   4/19/2015    Ba-140      -4.78E+OO     7.20E+OO   2.32E+Ol u WG          SG-2     371455005   4/19/2015     Be-7        3.58E+Ol     l.29E+Ol   3.39E+Ol WG          SG-2     371455005   4/19/2015     BETA        4.69E+OO     8.56E-01   2.12E+OO WG          SG-2     371455005   4/19/2015    Ce-141      -4.17E+OO     2.77E+OO   7.69E+OO u WG          SG-2     371455005   4/19/2015    Ce-144      -4.13E+OO     8.66E+OO   2.73E+Ol u WG          SG-2     371455005 . 4/19/2015     Co-57       2.65E-01     I.07E+OO   3.49E+OO u WG          SG-2     371455005   4/19/2015     Co-58      -l.58E+OO     l.50E+OO   4.38E+OO u WG          SG-2     371455005   4/19/2015     Co-60      -5.91E-01     l.09E+OO   3.37E+OO u WG          SG-2     371455005   4/19/2015     Cr-51       5.73E+OO     l.29E+Ol   4.19E+Ol u WG          SG-2     371455005   4/19/2015    Cs-134       2.49E+OO     l.41E+OO   4.79E+OO u WG          SG-2     371455005   4/19/2015    Cs-137      -3.42E-01     l.29E+OO   4.20E+OO u WG/
SG-2     371455005   4/19/2015     Fe-59       1.26E+OO     2.45E+OO   8.48E+OO u WG          SG-2     371455005   4/19/2015      H-3       -5.40E+Ol     4.25E+02   l.41E+03 u WG          SG-2     371455005   4/19/2015     I-131       2.18E+OO
* 3.09E+OO   l.OOE+Ol u WG          SG-2     371455005   4/19/2015     K-40       -l.33E+Ol     l.65E+Ol   5.34E+Ol u WG          SG-2     371455005   4/19/2015    La-140      -2.40E-01     2.19E+OO   7.06E+OO u WG          SG-2     371455005   4/19/2015    Mn-54       -1.31E+OO     l.20E+OO   3.45E+OO u WG          SG-2     371455005   4/19/2015     Nb-95       4.57E-01     l.27E+OO   4.27E+OO u WG          SG-2     371455005   4/19/2015    Ru-103       l.36E+OO     l.53E+OO   5.04E+OO u WG          SG-2     371455005   4/19/2015    Ru-106      -3.00E+OO     l.08E+Ol   3.53E+Ol u WG          SG-2     371455005   4/19/2015    Sb-124      -9. l lE-01   3.02E+OO   9.40E+OO u WG          SG-2     371455005   4/19/2015    Sb-125      -l.99E+OO     3.73E+OO   l.OOE+Ol u WG          SG-2     371455005   4/19/2015     Se-75      -l.48E+OO     l.88E+OO   5.82E+OO u WG          SG-2     371455005   4/19/2015    Th-228       4.39E+OO     3.31E+OO   7.29E+OO u WG          SG-2     371455005   4/19/2015     Zn-65      -l.15E+OO     3.0lE+OO   8.29E+OO u WG          SG-2     371455005   4/19/2015     Zr-95       1.82E+OO     2.09E+OO   7.19E+OO u WG          SG-4     371455006   4/19/2015    Ac-228      -7.51E+OO     5.69E+OO   l.62E+Ol u WG          SG-4     371455006   4/19/2015   Ag-108m      -2.06E+OO     l.28E+OO   3.54E+OO u
                                                                                               /
D-122

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.        MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)     (pCi/L)
WG         SG-4      371455006 4119/2015  Ag-llOm      -l.18E+OO    l.30E+OO     3.84E+OO u WG         SG-4      371455006 4/19/2015   ALPHA        2.64E-01    9.85E-01     3.12E+OO u WG         SG-4      371455006 4119/2015   Ba-140      2.88E+OO     6.63E+OO     2.22E+Ol u WG         SG-4      371455006 4/19/2015     Be-7       l.95E+Ol    l.15E+Ol     3.84E+Ol u WG         SG-4      371455006 4/19/2015    BETA        6.07E+OO    8.70E-01     1.98E+OO WG         SG-4      371455006 4119/2015   Ce-141      -3.93E-01    2.69E+OO     8.60E+OO u WG         SG-4      371455006 4/19/2015   Ce-144      4.96E+OO     9.99E+OO     3.26E+Ol u WG         SG-4      371455006 4119/2015    Co-57       5.33E-OI    l.18E+OO     3.88E+OO u WG         SG-4      371455006 4/19/2015    Co-58 . l.39E+OO    l.30E+OO     4.13E+OO u WG         SG-4      371455006 4/19/2015    Co-60       3.16E-02    l.49E+OO     4.88E+OO u WG         SG-4      371455006 4119/2015    Cr-51       2.32E+OI    l.29E+Ol     4.64E+Ol u WG         SG-4      371455006 4/19/2015   Cs-134      -l.23E+OO    l.28E+OO     3.90E+OO u WG         SG-4      371455006 4/19/2015   Cs-137       l.28E+OO    l.47E+OO     4.91E+OO u WG         SG-4      371455006 4/19/2015    Fe-59       4.75E-01    2.85E+OO     9.52E+OO u WG         SG-4      371455006 4/19/2015     H-3       -6.29E+02    4.llE+02     l.45E+03 u WG         SG-4      371455006 4119/2015    I-131       2.98E+OO    3.00E+OO     l.02E+Ol u WG         SG-4      371455006 4/19/2015     K-40      -4.18E+Ol    l.88E+Ol     5.16E+Ol u WG         SG-4      371455006 4/19/2015   La-140       5.34E-OI    2.46E+OO     8.IOE+OO u WG         SG-4      371455006 4/19/2015   Mn-54        l.90E+OO    l.46E+OO     3.66E+OO u WG         SG-4      371455006 4/19/2015    Nb-95       8.IOE-01    l.41E+OO     4.35E+OO u WG         SG-4      371455006 4/19/2015   Ru-103      -l.38E+OO    l.49E+OO     4.52E+OO u WG         SG-4      371455006 4/19/2015   Ru-106       4.30E+OO    l.IOE+Ol     3.64E+OI u WG         SG-4      371455006 4/19/2015   Sb-124      -l.08E-01    3.18E+OO     l.06E+OI u WG         SG-4      371455006 4/19/2015   Sb-125       l.31E+OO    3.68E+OO     l.23E+OI u WG         SG-4      371455006 4/19/2015    Se-75      -3.61E+OO    2.31E+OO     5.85E+OO u WG         SG-4      371455006 4/19/2015   Th-228       2.99E+OO. 4.14E+OO     9.33E+OO u WG         SG-4      371455006 4/19/2015    Zn-65      -5.37E+OO    3.15E+OO     8.00E+OO u WG         SG-4      371455006 4/19/2015    Zr-95       3.46E+OO    2.77E+OO     8.38E+OO u WG         SG-5      371455001 4/19/2015   Ac-228       l.62E+OO    7.18E+OO     l.77E+Ol u WG         SG-5      371455007 4/19/2015  Ag-108m      -5.49E-02    l.06E+OO     3.46E+OO u WG         SG-5      371455007 4/19/2015  Ag-llOm      -l.44E+OO    l.33E+OO     3.77E+OO u WG         SG-5      371455007 4/19/2015   ALPHA        l.49E+OO    l.52E+OO     4.54E+OO u  DL WG         SG-5      371455007 4/19/2015   Ba-140       2.40E+OO    6.87E+OO     2.27E+Ol u WG         SG-5      371455007 4/19/2015     Be-7      -2.98E+OO    1.17E+Ol     3.74E+OI u WG         SG-5      371455007 4/19/2015    BETA        l.33E+OI    l.50E+OO     2.50E+OO WG         SG-5      371455007 4/19/2015   Ce-141       4.74E-01    2.48E+OO     7.70E+OO u WG         SG-5      371455007 4/19/2015   Ce-144       2.0IE+OO    9.28E+OO     2.70E+OI u WG         SG-5      371455007 4/19/2015    Co-57       3.70E-02    l.02E+OO     3.31E+OO u WG         SG-5      371455007 4/19/2015    Co-58      -1.llE+OO    l.08E+OO     3.15E+OO u WG         SG-5      371455007 4/19/2015    Co-60       7.38E-01    l.08E+OO     3.75E+OO u WG         SG-5      371455007 4/19/2015    Cr-51       2.39E+OO    l.35E+OI     4.02E+OI u WG         SG-5      371455007 4/19/2015   Cs-134      -8.28E-01    l.45E+OO     4.19E+OO u WG         SG-5      371455007 4/19/2015   Cs-137      -3:orn+oo    l.68E+OO     4.42E+OO u WG         SG-5      371455007 4/19/2015    Fe-59       4.70E-01    2.82E+OO     9.34E+OO u WG         SG-5      371455007 4/19/2015     H-3       -9.34E+Ol    4.28E+02     l.42E+03 u WG         SG-5      371455007 4/19/2015    I-131       2.80E+OO    2.70E+OO     9.18E+OO u WG         SG-5      371455007 4/19/2015     K-40      -8.08E+OO    l.75E+OI     6.IOE+Ol u WG         SG-5      371455007 4/19/2015   La-140      -3.61E-OI    2.02E+OO     6.58E+OO u WG         SG-5      371455007 4/19/2015    Mn~54       8.70E-OI    1.24E+OO     4.27E+OO u WG         SG-5      371455007 4/19/2015    Nb-95       3.12E+OO    1.44E+OO   I 4.85E+OO u D-123

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC     STD.DEV.        MDC      FLAGS TYPE      STATION       LSN       DATE      NUCLIDE          (pCi/L)   (pCi/L)     (pCi/L)
WG         SG-5      371455007  4/19/2015    Ru-103      l.16E+OO    1.35E+OO     4.54E+OO u WG         SG-5      371455007  4119/2015    Ru-106      l.70E+OO    9.78E+OO     3.18E+Ol u WG         SG-5      371455007  4/19/2015    Sb-124       9.07E-01   3.35E+OO     1.14E+Ol u WG         SG-5      371455007  4/19/2015    Sb-125     -6.44E+OO    3.54E+OO     9.lOE+OO u WG         SG-5      371455007  4/19/2015     Se-75     -l.lSE-01    l.75E+OO     5.86E+OO u WG         SG-5      371455007  4/19/2015    Th-228      3.14E+OO    4.43E+OO     8.25E+OO u WG         SG-5      371455007  4/19/2015    Zn-65       4.88E+OO    2.38E+OO     8.09E+OO u WG         SG-5      371455007  4/19/2015     Zr-95      l.57E+OO    2.llE+OO     7.35E+OO u WG         W-4       371914001  4/24/2015    Ac-228      5.05E-02    4.67E+OO     9.78E+OO u WG         W-4       371914001  4/24/2015   Ag-108m       l.86E-01   6.86E-01     2.0lE+OO u WG         W-4       371914001  4/24/2015   Ag-llOm     -5.07E-01    7.87E-01     2.lOE+OO U WG         W-4       371914001  4/24/2015    Ba-140     -5.03E-01    4.52E+OO     1.48E+Ol U WG         W-4       371914001' 4/24/2015     Be-7       5.56E+OO    6.48E+OO     2.16E+Ol U WG         W-4       371914001  4/24/2015    Ce-141      4.0SE+OO    l.69E+OO     4.45E+OO U WG         W-4       371914001  4/24/2015    Ce-144      5. l lE-01  4.72E+OO     l.50E+Ol U WG         W-4       371914001  4/24/2015    Co-57      -8.59E-01    6.32E-01     1.86E+OO U WG         W-4       371914001  4/24/2015    Co-58       l.07E+OO    7.74E-01     2.57E+OO U WG         W-4       371914001  4/24/2015    Co-60      -1.46E+OO    7.79E-01     2.0SE+OO U WG         W-4       371914001  4/24/2015     Cr-51     -l.13E+Ol    8.22E+OO     2.43E+Ol U WG         W-4       371914001  4/24/2015    Cs-134     -2. l lE-01  7.27E-01     2.40E+OO U WG         W-4       371914001  4/24/2015    Cs-137      4.94E-01    l.27E+OO     2.39E+OO U WG         W-4       371914001  4/24/2015     Fe-59      l.68E+OO    l.66E+OO     5.47E+OO U WG         W-4       371914001  4/24/2015      H-3       3.41E+02    4.28E+02     l.35E+03 U WG         W-4       371914001  4/24/2015     I-131      l.44E+OO    2.0lE+OO     6.47E+OO U WG         W-4       371914001  4/24/2015     K-40      -1.40E+OO    l.17E+Ol     3.06E+Ol U WG         W-4       371914001  4/24/2015    La-140       l.31E-Ol   1.67E+OO     5.49E+OO U WG         W-4       371914001  4/24/2015    Mn-54       4.29E-01    7.06E-01     2.38E+OO U WG         W-4       371914001  4/24/2015    Nb-95       l.12E+OO    8.0lE-01     2.66E+OO U WG.        W-4       371914001  4/24/2015. Ru-103     -1.79E+OO    1.02E+OO     2.46E+OO U WG         W-4       371914001  4/24/2015    Ru-106      6.97E+OO    6.43E+OO     2.lOE+Ol U WG         W-4       371914001  4/24/2015    Sb-124     -1.49E+OO    1.92E+OO     5.88E+OO U WG         W-4       371914001  4/24/2015    Sb-125     -3.51E+OO    2.33E+OO   . 5.97E+OO U WG         W-4       371914001  4/24/2015     Se-75      l.62E+OO    1.05E+OO     3.32E+OO U WG         W-4       371914001  4/24/2015    Th-228     -1.06E+OO    1.84E+OO     5.0lE+OO U WG         W-4       371914001  4/24/2015    Zn-65        8.71E-01   l.52E+OO     4.36E+OO U WG         W-4       371914001  4/24/2015     Zr-95     -2.90E+OO    1.47E+OO     4.02E+OO U WG         W-5       371914002  4/24/2015    Ac-228      7.97E-01    3.65E+OO     6.72E+OO U WG         W-5       371914002  4/24/2015   Ag-108m      1.42E+OO    7.86E-01     l.67E+OO U WG         W-5       371914002  4/24/2015   Ag-llOm      1.85E+OO    7.33E-01     l.96E+OO U WG         W-5       371914002  4/24/2015    Ba-140      6.67E+OO    4.75E+OO     1.50E+Ol U WG         W-5       371914002  4/24/2015     Be-7       7.38E+OO    5.73E+OO     1.83E+Ol U WG         W-5       371914002  4/24/2015    Ce-141     -9.03E-01    1.61E+OO     4.09E+OO U WG         W-5       371914002  4/24/2015    Ce-144      -3.43E-01   4.IOE+OO     l.32E+Ol u WG         W-5       371914002  4/24/2015    Co-57       -3.61E-01   5.37E-01     l.70E+OO u WG         W-5       371914002  4/24/2015    Co-58       -4.70E-03   7.61E-01     2.0SE+OO u WG         W-5       371914002  4/24/2015    Co-60       -9.54E-01   6.22E-01     1.77E+OO u WG         W-5       371914002  4/24/2015     Cr-51      3.54E+OO    6.SOE+OO     2.26E+Ol u WG         W-5       371914002  4/24/2015    Cs-134     -3.04E-01    5.87E-01     l.88E+OO u WG         W-5       371914002  4/24/2015    Cs-137      5.lSE-01    1.29E+OO     2.15E+OO u WG         W-5       371914002  4/24/2015     Fe-59     -2.42E-01    l.45E+OO     4.17E+OO u D-124

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-5       371914002  4/24/2015      H-3        7.57E+02    4.71E+02    l.41E+03 u WG         W-5       371914002  4/24/2015     1-131      -2.23E+OO    2.06E+OO    6.36E+OO u WG         W-5       371914002  4/24/2015     K-40       -4.04E+OO    8.96E+OO    2.69E+Ol u WG         W-5       371914002  4/24/2015    La-140      -5.17E-01    l.43E+OO    4.55E+OO u WG         W-5       371914002  4/24/2015    Mn-54       -6.91E-01    5.91E-01    l.78E+OO u WG         W-5       371914002  4/24/2015    Nb-95        2.55E+OO    9.02E-01    l.94E+OO UI WG         W-5       371914002  4/24/2015    Ru-103      -1.18E+OO    8.70E-01    2.18E+OO u WG         W-5       371914002  4/24/2015    Ru-106       1.14E+Ol    5.77E+OO    l.82E+Ol u WG         W-5       371914002  4/24/2015    Sb-124      -1.13E+OO    l.90E+OO    4.96E+OO u WG         W-5       371914002  4/24/2015    Sb-125      -6.98E-01    l.89E+OO    5.28E+OO u WG         W-5       371914002  4/24/2015     Se-75       7.26E-Ol    8.25E-01    2.75E+OO u WG         W-5       371914002  4/24/2015    Th-228       1.1 lE+OO   l.78E+OO    3.52E+OO u WG         W-5       371914002  4/24/2015     Zn-65      -l.21E+OO    l.31E+OO    3.80E+OO u WG         W-5       371914002  4/24/2015     Zr-95       l.99E+OO    1.13E+OO    3.63E+OO u WG         W-6       371914003  4/24/2015    Ac-228      -3.84E+OO    3.24E+OO    8.08E+OO u WG         W-6       371914003  4/24/2015   Ag-108m      -5.75E-02    5.17E-01    l.69E+OO u WG         W-6       371914003  4/24/2015   Ag-llOm      -l.03E-Ol    6.45E-01    l.78E+OO u WG         W-6       371914003  4/24/2015    Ba-140       2.21E+OO    3.92E+OO    l.28E+Ol u WG         W-6       371914003  4/24/2015     Be-7        5.45E+OO    7.69E+OO    l.66E+Ol u WG         W-6       371914003  4/24/2015    Ce-141        l.51E-01   1.31E+OO    3.75E+OO u WG         W-6       371914003  4/24/2015    Ce-144      -4.24E-01    4.02E+OO    l.30E+Ol u WG         W-6       371914003  4/24/2015    Co-57        7.93E-Ol    5.78E-01    l.82E+OO u WG         W-6       371914003  4/24/2015    Co-58         l.03E-01   6.12E-01    2.05E+OO u WG         W-6       371914003  4/24/2015    Co-60        l.75E+OO    8.30E-01    l.82E+OO u WG         W-6       371914003  4/24/2015     Cr-51      -6.42E-01    6.29E+OO    2.09E+Ol u WG         W-6       371914003  4/24/2015    Cs-134       1.1 lE-01   6.71E-01    2.26E+OO u WG         W-6       371914003  4/24/2015    Cs-137       2.73E+OO    1.12E+OO    2.0lE+OO UI WG         W-6       371914003  4/24/2015     Fe-59      -l.57E+OO    1.38E+OO    4.llE+OO u WG         W-6       371914003  4/24/2015      H-3       4.93E+02     4.50E+02    1.40E+03 u WG         W-6       371914003  4/24/2015     1-131      -1.58E-02    l.50E+OO    4.95E+OO u WG         W-6       371914003  4/24/2015     K-40        2.18E+Ol    1.03E+Ol    1.61E+Ol WG         W-6       371914003  4/24/2015    La-140       1.64E+OO    1.30E+OO    4.00E+OO u WG         W-6       371914003  4/24/2015    Mn-54       -7.07E-01    5.98E-01    1.82E+OO u WG         W-6     . 371914003' 4/24/2015    Nb-95        1.09E-02    6.65E-01    2.03E+OO u WG         W-6       371914003  4/24/2015    Ru-103      -1.12E+OO    8.07E-Ol    2.02E+OO u WG         W-6       371914003  4/24/2015    Ru-106       2.75E+OO    5.42E+OO    1.76E+Ol u WG         W-6       371914003  4/24/2015    Sb-124       4.75E-01    1.44E+OO    4.86E+OO u WG         W-6       371914003  4/24/2015    Sb-125       2.84E+OO    1.80E+OO    5.75E+OO u WG         W-6       371914003  4/24/2015     Se-75       9.57E-01    8.43E-Ol    2.80E+OO u WG         W-6       371914003  4/24/2015    Th-228       1.20E-01    l.72E+OO    3.77E+OO u WG         W-6       371914003  4/24/2015     Zn-65      -5.74E-01    1.49E+OO    3.67E+OO u WG         W-6       371914003  4/24/2015     Zr-95       1.84E+OO    1.35E+OO    3.82E+OO u WG         W-10      376889004   717/2015    Ac-228       4.43E+OO    6.55E+OO    2.21E+Ol u WG         W-10      376889004   717/2015   Ag-l08m       2.64E+OO    1.70E+OO    5.61E+OO u WG         W-10      376889004   717/2015   Ag-llOm       9.02E-01    1.43E+OO    4.80E+OO u WG         W-10      376889004   717/2015    Ba-140      -2.82E+OO    8.70E+OO    2.77E+Ol u WG         W-10      376889004   717/2015     B.e-7       2.llE+Ol    l.56E+Ol    5.19E+Ol u WG         W-10      376889004   717/2015    Ce-141       2.76E+OO    3.15E+OO    1.06E+Ol u WG         W-10      376889004   717/2015    Ce-144       l.56E+OO    1.23E+Ol    3.90E+Ol u WG         W-10      376889004   717/2015    Co-57       -1.05E+OO    l.58E+OO    5.12E+OO u D-125 .

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                      CONC*     STD.DEV.        MDC        FLAGS TYPE      STATION       LSN     DATE       NUCLIDE         (pCi/L)    (pCi/L)     (pCi/L)
WG         W-10      376889004 717/2015     Co-58      -l.90E+OO    l.64E+OO     4.55E+OO  u WG         W-10      376889004 717/2015     Co-60      -l.36E+OO    l.60E+OO     4.72E+OO  u WG         W-10      376889004 717/2015      Cr-51     -l.66E+Ol    1.67E+Ol     5.12E+Ol  u WG         W-10      376889004 717/2015     Cs-134     -l.43E+OO    l.59E+OO     4.58E+OO  u WG         W-10      376889004 717/2015     Cs-137     -l.51E+OO    l.47E+OO     4.21E+OO  u WG         W-10      376889004 717/2015      Fe-59     -5.93E+OO    3.30E+OO     8.00E+OO  u WG         W-10      376889004 717/2015       H-3      -4.34E+02    5.45E+02     l.85E+03  u WG         W-10      376889004 717/2015      I-131     -4.21E+OO    3.25E+OO     9.49E+OO  u WG         W-10      376889004 717/2015      K-40       8.25E+OO    1.91E+Ol     5.89E+Ol  u WG         W-10      376889004 717/2015     La-140     -5.50E+OO    3.57E+OO     6.68E+OO  u WG         W-10      376889004 717/2015     Mn-54       1.26E+OO    l.64E+OO     5.70E+OO  u WG         W-10      376889004 717/2015     Nb-95       3.71E-Ol    2.08E+OO     5.87E+OO  u WG         W-10      376889004 717/2015     Ru-103      3.08E-Ol    l.80E+OO     5.93E+OO  u WG         W-10      376889004 717/2015     Ru-106      4.24E+OO    l.19E+Ol     3.96E+Ol  u WG         W-10      376889004 717/2015     Sb-124      2.35E+OO    3.84E+OO     l.34E+Ol  u WG         W-10      376889004 717/2015     Sb-125     -5.00E+OO    4.77E+OO     l.43E+Ol  u WG         W-10      376889004 717/2015      Se-75      2.82E+OO    1.24E+OO     7.34E+OO  u WG         W-10      376889004 717/2015     Th-228      4.48E+OO    4.06E+OO     l.17E+Ol  u WG'        W-10      376889004 717/2015     Zn-65      -7.96E-Ol    3.58E+OO     9.97E+OO  u WG         W-10      376889004 717/2015      Zr-95      4.00E+OO    2.94E+OO     9.12E+OO  u WG         W-11      376889005 717/2015     Ac-228      2.69E+Ol    9.89E+OO     2.62E+Ol  UI WG         W-11      376889005 717/2015    Ag-108m      9.87E-01    l.17E+OO     3.98E+OO  u WG         W-11      376889005 717/2015    Ag-llOm     -1.52E+OO    1.63E+OO     4.17E+OO  u WG         W-11      376889005 717/2015     Ba-140      8.35E-01    7.95E+OO     2.58E+Ol  U WG        W-11       376889005 717/2015      Be-7       2.37E+Ol    l.47E+Ol     4.87E+Ol* U WG        W-11       376889005 717/2015     Ce-141     -6.34E-01    2.97E+OO     9.40E+OO  U WG         W-11      376889005 717/2015     Ce-144     -4.72E+OO    9.81E+OO     3.06E+Ol  U WG        W-11       376889005 717/2015     Co-57      -4.42E-01    1.35E+OO     4.29E+OO  U WG        W-11       376889005 717/2015     Co-58       5.77E-01    1.41E+OO     4.81E+OO  U WG        W-11       376889005 717/2015     Co-60      -8.35E-01    l.39E+OO     4.27E+OO  U WG        W-11       376889005 717/2015      Cr-51     -4.82E+OO    1.37E+Ol     4.45E+Ol  U WG        W-11       376889005 717/2015     Cs-134      8.29E-01    1.77E+OO    .5.55E+OO  U WG        W-11       376889005 717/2015     Cs-137      1.87E+OO    l.19E+OO     3.30E+OO  U WG        W-11       376889005 717/2015      Fe-59      1.40E+OO    2.80E+OO     9.52E+OO  U WG        W-11       376889005 717/2015       H-3      -6.18E+02    5.39E+02     1.86E+03  U WG        W-11       376889005 717/2015 . I-131     -3.73E-01    2.90E+OO     9.47E+OO  u WG        W-11       376889005 717/2015      K-40      -9.08E+OO    1.70E+Ol     6.llE+Ol  u WG        W-11       376889005 717/2015     La-140      9.00E-01    2.17E+OO     7.54E+OO  u WG        W-11       376889005 717/2015     Mn-54      -1.85E+OO    1.66E+OO     3.88E+OO  u WG        W-11       376889005 717/2015     Nb-95       1.21E-Ol    l.38E+OO     4.61E+OO  u WG        W-11       376889005 717/2015     Ru-103     -5.39E-Ol    1.41E+OO     4.41E+OO  u WG        W-11       376889005 717/2015     Ru-106     -4.28E+OO    l.33E+Ol     4.36E+Ol  u WG        W-11       376889005 717/2015     Sb-124      6.64E+OO    2.95E+OO
* l.30E+Ol  u WG        W-11       376889005 717/2015     Sb-125      9.85E-01    3.63E+OO     1.21E+Ol  u WG        W-11       376889005 717/2015      Se-75      1.75E-02    1.86E+OO     6.21E+OO  u WG        W-11       376889005 717/2015     Th-228      3.19E-01    3.05E+OO     9.81E+OO  u WG        W-11       376889005 717/2015     Zn-65      -1.85E+OO    2.82E+OO     8.30E+OO  u WG        W-11       376889005 717/2015      Zr-95     -9.35E-01    2.69E+OO     7.52E+OO  u WG        W-12       376889006 717/2015     Ac-228      l.34E+Ol    6.84E+OO     2.22E+Ol  u WG        W-12       376889006 717/2015    Ag-108m     -l.38E+OO    l.31E+OO     3.90E+OO  u D-126

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC      FLAGS TYPE     STATION       LSN     DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-12      376889006 717/2015   Ag-llOm      -4.30E-01    1.13E+OO    3.69E+OO u WG         W-12      376889006 717/2015    Ba-140       2.71E+OO    7.18E+OO . 2.38E+Ol u WG         W-12      376889006 717/2015     Be-7        2.04E+Ol    1.29E+Ol    4.31E+Ol u WG         W-12      376889006 717/2015    Ce-141       4.82E-01    2.85E+OO    8.32E+OO u WG         W-12      376889006 717/2015    Ce-144       5.00E+OO    9.07E+OO    3.00E+Ol u WG         W-12      376889006 717/2015    Co-57       -l.15E+OO    l.27E+OO    3.93E+OO u WG         W-12      376889006 717/2015    Co-58        2.75E-01    1.34E+OO    4.54E+OO u WG         W-12      376889006 717/2015    Co-60
* l.64E+OO    l.43E+OO    5.15E+OO u WG         W-12      376889006 717/2015     Cr-51       2.45E-01    l.32E+Ol    4.44E+Ol u WG         W-12      376889006 717/2015    Cs-134      -7.73E-01    l.24E+OO    3.85E+OO u WG         W-12      376889006 717/2015    Cs-137       2.13E-01    l.39E+OO    4.72E+OO u WG         W-12      376889006 717/2015     Fe-59       l.62E+OO    2.85E+OO    9.68E+OO u WG         W-12      376889006 717/2015      H-3       -5.51E+Ol    5.68E+02    l.88E+03 u WG         W-12      376889006 717/2015     I-131       3.12E+OO    3.55E+OO    8.12E+OO u WG         W-12      376889006 717/2015     K-40        2.66E+Ol    1.59E+Ol    4.71E+Ol u WG         W-12      376889006 717/2015    La-140      -6.09E-01    2.23E+OO    7.lOE+OO u WG         W-12      376889006 717/2015    Mn-54        2.36E-02    l.30E+OO    4.34E+OO u WG         W-12      376889006 717/2015    Nb-95        3.91E-01    1.59E+OO    4.72E+OO u WG         W-12      376889006 717/2015    Ru-103      -3.93E+OO    1.72E+OO    3.81E+OO u WG         W-12      376889006 717/2015    Ru-106      -6.54E+OO    1.0lE+Ol    3.02E+Ol u WG         w:12      376889006 717/2015    Sb-124      -4.71E+OO    3.64E+OO    9.43E+OO u WG         W-12      376889006 717/2015    Sb-125      -6.50E-01    3.35E+OO    1.09E+Ol u WG         W-12      376889006 717/2015     Se-75       1.09E+OO    l.76E+OO    6.07E+OO u
 .wG         W-12      376889006 717/2015    Th-228       7.30E+OO    3.46E+OO    8.19E+OO u WG         W-12      376889006 717/2015    Zn-65       -4.47E+OO. 3.41E+OO    9.19E+OO u WG         W-12      376889006 717/2015     Zr-95       l.27E+OO    2.23E+OO    7.73E+OO u WG         MW-20     376889008 717/2015    Ac-228      -2.44E-01    6.47E+OO    2.04E+Ol u WG         MW-20     376889008 717/2015   Ag-108m       2.75E-01    l.36E+OO    4.48E+OO u WG         MW-20     376889008 717/2015   Ag-l!Om      -1.20E+OO    1.48E+OO    4.55E+OO u WG         MW-20     376889008 717/2015    Ba-140       l.13E+OO    8.44E+OO    2.39E+Ol u WG         MW-20     376889008 717/2015     Be-7       -6.44E+OO    l.30E+Ol    4.02E+Ol u WG         MW-20     376889008 717/2015    Ce-141      -1.07E+OO    2.96E+OO    8.07E+OO u WG         MW-20     376889008 717/2015    Ce-144      -l.32E+Ol    l.OOE+Ol    2.90E+Ol u WG         MW-20     376889008 717/2015    Co-57        3.68E-01    l.32E+OO    4.35E+OO u WG         MW-20     376889008 717/2015    Co-58        2.52E-01    l.45E+OO    4.82E+OO u WG         MW-20     376889008 717/2015    Co-60        9.15E-01    l.85E+OO    6.33E+OO u WG         MW-20     376889008 717/2015     Cr-51      -l.17E+Ol    l.56E+Ol    4.90E+Ol u WG         MW-20     376889008 717/2015    Cs-134      -2.70E+OO    l.96E+OO    4.25E+OO u WG         MW-20     376889008 717/2015    Cs-137       4.84E-01    l.53E+OO    5.19E+OO u WG         MW-20     376889008 717/2015     Fe-59       l.80E+OO    2.61E+OO    9.25E+OO u WG         MW-20     376889008 717/2015      H-3       -2.63E+02    5.01E+02    l.68E+03 u WG         MW-20     376889008 717/2015     I-131       l.78E+OO    2.82E+OO    9.50E+OO u WG         MW-20     376889008 717/2015     K-40        3.91E+OO    2.32E+Ol    4.61E+Ol u WG         MW-20     376889008 717/2015    La-140      -3.87E+OO    2.50E+OO    5.47E+OO u WG         MW-20     376889008 717/2015    Mn-54       -2.15E+OO    l.45E+OO    3.77E+OO u WG         MW-20     376889008 717/2015    Nb-95       -l.20E+OO    1.52E+OO    4.60E+OO U WG         MW-20     376889008 717/2015    Ru-103      -2.12E+OO    2.02E+OO    4.91E+OO U WG         MW-20     376889008 717/2015    Ru-106      -7.lOE+OO    l.26E+Ol    3.99E+Ol U WG         MW-20     376889008 717/2015    Sb-124      -2.35E+OO    3.47E+OO    9.85E+OO U WG         MW-20     376889008 717/2015    Sb-125      -1.15E+Ol    4.88E+OO    l.06E+Ol U D-127

(
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN       DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         MW-20     376889008   717/2015     Se-75       7.49E-01    1.87E+OO    6.35E+OO u WG         MW-20     376889008   717/2015    Th-228       5.48E-02    3.04E+OO    9.72E+OO u WG         MW-20     376889008   717/2015    Zn-65       -2.81E+OO    3.34E+OO    LOIE+Ol  u WG         MW-20     376889008   717/2015     Zr-95       7.70E-01    2.74E+OO    9.23E+OO u WG         MW-21     376889009   717/2015    Ac-228      -3.06E+OO    5.27E+OO    1.51E+Ol u WG         MW-21     376889009   717/2015   Ag-108m      -5.49E-02    1.09E+OO    3.62E+OO u WG         MW-21     376889009   717/2015   Ag-llOm       l.17E+OO    1.42E+OO    4.28E+OO u WG         MW-21     376889009   717/2015    Ba-140      -7.09E+OO    6.87E+OO    2.00E+Ol u WG         MW-21     376889009 . 717/2015     Be-7        1.24E+Ol    l.13E+Ol    3.86E+Ol u WG         MW-21     376889009   717/2015    Ce-141       3.81E+OO    2.32E+OO    7.09E+OO u WG         MW-21     376889009   717/2015    Ce-144       9.24E+OO    8.46E+OO    2.86E+Ol u WG         MW-21     376889009   717/2015    Co-57       -8.57E-02    1.04E+OO    3.50E+OO u WG         MW-21     376889009   717/2015    Co-58       -8.13E-01    l.17E+OO    3.60E+OO u WG         MW-21     376889009   717/2015    Co-60        1.04E+OO    1.24E+OO    4.44E+OO u WG         MW-21     376889009   717/2015     Cr-51      -1.28E+Ol    1.34E+Ol    3.88E+Ol u WG         MW-21     376889009   717/2015    Cs-134       1.IOE+OO    1.43E+OO    4.97E+OO u WG         MW-21     376889009   717/2015    Cs-137       9.05E-Ol    1.36E+OO    4.llE+OO u WG         MW-21     376889009   717/2015     Fe-59      -7.59E-01    2.19E+OO    6.78E+OO u WG         MW-21     376889009   717/2015      H-3       -8.96E+02    5.21E+02    l.84E+03 u WG         MW-21     376889009   717/2015     1-131      -2.93E+OO    2.69E+OO    8.02E+OO u WG         MW-21     376889009   717/2015     K-40        8.75E+OO    2.22E+Ol    5.75E+Ol u WG         MW-21     376889009   717/2015    La-140      -1.67E+OO    2.19E+OO    6.33E+OO u WG         MW-21     376889009   717/2015    Mn-54        3.65E-Ol    l.35E+OO    4.58E+OO U WG         MW-21     376889009   717/2015    Nb-95        1.51E+OO    1.44E+OO    3.67E+OO U WG         MW-21     376889009   717/2015    Ru-103       1.07E+OO    1.26E+OO    4.31E+OO U WG         MW-21     376889009   717/2015    Ru-106      -5.64E+OO    l.14E+Ol    3.49E+Ol U WG         MW-21     376889009   717/2015    Sb-124       1.79E+OO    2.69E+OO    9.59E+OO U WG         MW-21     376889009   717/2015    Sb-125       3.99E-01    3.59E+OO    l.20E+Ol U WG         MW-21     376889009   717/2015     Se-75      -2.27E+OO    l.84E+OO    5.25E+OO U WG         MW-21     376889009   71712015    Th-228       4.54E+OO    2.91E+OO    9.20E+OO U WG         MW-21     376889009   717/2015     Zn-65      -l.04E+OO    3-.21E+OO   8.90E+OO U WG         MW-21     376889009   717/2015     Zr-95       5.26E-01    2.16E+OO    7.40E+OO U WG         W-4       376889001   7/9/2015    Ac-228       1.41E+Ol    6.68E+OO    2.26E+Ol U WG         W-4       376889001   7/9/2015   Ag-108m      -1.77E+OO    1.29E+OO    3.57E+OO U WG         W-4       376889001   7/9/2015   Ag-llOm       l.34E+OO    1.26E+OO    4.45E+OO U WG         W-4       376889001   7/9/2015    Ba-140       5.12E+OO    6.72E+OO    2.26E+Ol U WG         W-4       376889001   7/9/2015     Be-7        l.16E+Ol    l.32E+Ol    4.44E+Ol U WG         W-4       376889001   7/9/2015    Ce-141       2.78E+OO    2.77E+OO    8.59E+OO U WG         W-4       376889001   7/9/2015    Ce-144      -l.09E+OO    1.07E+Ol    3.43E+Ol U WG         W-4       376889001   71912015    Co-57       -1.46E+OO    1.48E+OO    4.47E+OO U WG         W-4       376889001   71912015    Co-58       -l.09E+OO    1.20E+OO    3.19E+OO U WG         W-4       376889001   7/9/2015    Co-60        4.06E-01    1.21E+OO    4.21E+OO U WG         W-4       376889001   7/9/2015     Cr-51      -8.97E+OO    1.47E+Ol    4.66E+Ol U WG         W-4       376889001   7/9/2015    Cs-134       1.90E+OO    1.68E+OO    5.35E+OO U WG         W-4       376889001   71912015    Cs-137      -4.42E-Ol    1.43E+OO    4.66E+OO U WG         W-4       376889001   71912015     Fe-59      -6.34E+OO    3.20E+OO    6.5IE+OO U WG         W-4       376889001   7/9/2015      H-3       -3.28E+02    4.88E+02    l.65E+03 U WG         W-4       376889001   719/2015     I-131      -6.79E-Ol    2.07E+OO    6.65E+OO U WG         W-4       376889001   7/9/2015     K-40        2.lOE+Ol    2.15E+Ol    5.30E+Ol U WG         W-4       376889001   71912015    La-140       4.39E-Ol    1.69E+OO    5.81E+OO U D-128

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN     DATE      NUCLIDE           (pCi/L)    (pCi/L)   (pCi/L)
WG         W-4       376889001 7/9/2015    Mn-54         2.46E+OO    l.OlE+OO   3.49E+OO u WG         W-4       376889001 7/9/2015    Nb-95         2.42E+OO    l.43E+OO   5.0lE+OO u WG         W-4       376889001 7/9/2015    Ru-103       -l.91E+OO    l.54E+OO   4.30E+OO u WG         W-4       376889001 7/9/2015    Ru-106       -9.49E-01    l.04E+Ol   3.48E+Ol u WG         W-4       376889001 7/9/2015    Sb-124        2.14E+OO    3.04E+OO   l.09E+Ol u WG         W-4       376889001 7/9/2015    Sb-125
* 2.49E+OO     3.70E+OO   l.25E+Ol u WG         W-4       376889001 7/9/2015     Se-75        2.37E+OO    2.05E+OO   6.95E+OO u WG         W-4       376889001 7/9/2015    Th-228        l.llE+OO    4.33E+OO   l.02E+Ol u WG         W-4       376889001 7/9/2015     Zn-65       -3.77E+OO    3.59E+OO   7.90E+OO u WG         W-4       376889001 7/9/2015     Zr-95       -3.51E-Ol    2.86E+OO   8.41E+OO u WG         W-5       376889002 7/9/2015    Ac-228        3.42E+OO    7.41E+OO   2.30E+Ol u WG         W-5       376889002 7/9/2015   Ag-108m       -l.88E-02    1.33E+OO   4.35E+OO u WG         W-5       376889002 7/9/2015   Ag-llOm       -8.07E-01    1.66E+OO   5.17E+OO u WG         W-5       376889002 7/9/2015    Ba-140       -4.37E+OO    6.73E+OO   2.06E+Ol u WG         W-5       376889002 7/9/2015     Be-7         4.92E+OO    1.37E+Ol   4.57E+Ol u WG         W-5       376889002 7/9/2015    Ce-141       -2.47E+OO    3.40E+OO   9.41E+OO u WG         W-5       376889002 7/9/2015    Ce-144       -1.41E+Ol    1.21E+Ol   3.77E+Ol u WG         W-5       376889002 7/9/2015    Co-57         5.44E-01    l.53E+OO   5.16E+OO u WG         W-5       376889002 7/9/2015    Co-58        -2.03E-01    l.67E+OO   5.32E+OO u WG         W-5       376889002 7/9/2015    Co-60        -1.0SE-03    l.70E+OO   5.62E+OO u WG         W-5       376889002 7/9/2015     Cr-51        l.74E+Ol    l.60E+Ol   5.35E+Ol u WG         W-5       376889002 7/9/2015    Cs-134       -6.71E-01    l.53E+OO   4.69E+OO u WG         W-5       376889002 7/9/2015    Cs-137        3.32E+OO    l.90E+OO   6.30E+OO u WG         W-5       376889002 7/9/2015     Fe-59       -1.55E+OO    3.0lE+OO   9.53E+OO u WG         W-5       376889002 7/9/2015      H-3        -3.17E+02    5.37E+02   l.81E+03 u WG         W-5       376889002 7/9/2015     1-131       -l.31E+OO    2.72E+OO   8.68E+OO u WG         W-5       376889902 7/9/2015     K-40         l.20E+Ol    l.85E+Ol   6.37E+Ol u WG         W-5       376889002 7/9/2015    La-140        8.lOE-02    2.IOE+OO   6.95E+OO u WG         W-5       376889002 7/9/2015    Mn-54        -1.56E+OO    l.62E+OO   4.96E+OO u WG         W-5       376889002 7/9/2015    Nb-95         2.55E-01    l.66E+OO   5.41E+OO u WG         W-5       376889002 7/9/2015    Ru-103       -1.67E+OO    l.74E+OO   5.21E+OO u WG         W-5       376889002 7/9/2015    Ru-106        2:66E+OO    l.50E+Ol   4.92E+Ol u WG         W-5       376889002 7/9/2015    Sb-124        3.50E-01    3.69E+OO   l.23E+Ol u WG         W-5       376889002 7/9/2015    Sb-125       -6.06E+OO    4.39E+OO   l.24E+Ol u WG         W-5       376889002 7/9/2015     Se-75       -2.90E+OO    2.23E+OO   6.62E+OO u WG         W-5       376889002 7/9/2015    Th-228        6.83E+OO    5.85E+OO   9.22E+OO U WG         W-5       376889002 7/9/2015     Zn-65       -l.72E+OO    3.24E+OO   l.03E+Ol U WG         W-5       376889002 7/9/2015     Zr-95        5.64E-01    2.26E+OO   7.43E+OO U WG         W-6       376889003 7/9/2015    Ac-228        5.62E+OO    6.37E+OO   2.19E+Ol U WG         W-6       376889003 7/9/2015   Ag-108m       -l.03E+OO    l.23E+OO   3.68E+OO U WG         W-6       376889003 7/9/2015   Ag-llOm        4.22E+OO  . l.55E+OO   4.IOE+OO UI WG         W-6       376889003 7/9/2015    Ba-140        l.16E+OO    6.35E+OO   2.07E+Ol U WG         W-6       376889003 7/9/2015     Be-7         2.07E+OO    l.13E+Ol   3.72E+Ol U WG         W-6       376889003 7/9/2015    Ce-141       -3.llE+OO    3.04E+OO   9.05E+OO U WG         W-6       376889003 7/9/2015    Ce-144        3.84E+OO    l.llE+Ol   3.61E+Ol U WG         W-6       376889003 7/9/2015     Co-57        -5.66E-01   l.50E+OO   4.74E+OO U WG         W-6       376889003 7/9/2015    Co-58        -2.02E+OO    l.48E+OO   4.0lE+OO U WG         W-6       376889003 7/9/2015    Co-60        -1.28E+OO    1.51E+OO   4.44E+OO U WG         W-6       376889003 7/9/2015     Cr-51       -1.55E+Ol    1.37E+Ol   4.09E+Ol U WG         W-6       376889003 7/9/2015    Cs-134        -1.88E-01   1.51E+OO   4.95E+OO U D-129

Donald C. Cook Nuclear Plant           Annual Radiologi.cal Environmental Operating Report 2015 SAMPLE                             END                        CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)    (pCi/L)    (pCi/L)
WG         W-6       376889003  7/9/2015    Cs-137        3.25E+OO    l.49E+OO    2.33E+OO UI WG         W-6       376889003  7/9/2015     Fe-59       -4.92E+OO    2.95E+OO    6.71E+OO u WG         W-6       376889003  7/9/2015      H-3        -4.47E+Ol    5.51E+02    l.82E+03 u WG         W-6       376889003  7/9/2015     1-131        -2.74E-01   2.61E+OO    7.47E+OO u WG         W-6       376889003  7/9/2015     K-40         3.07E+Ol    2.23E+Ol    8.37E+Ol u WG         W-6       376889003  7/9/2015    La-140         l.21E~Ol   1.64E+OO    5.48E+OO u WG         W-6       376889003  7/9/2015    Mn-54         -5.86E-01   1.53E+OO    4.88E+OO u WG         W-6       376889003  7/9/2015    Nb-95        -2.12E-02    1.45E+OO    4.81E+OO u WG         W-6       376889003  7/9/2015    Ru-103        1.07E+OO    l.30E+OO    4.40E+OO u WG         W-6       376889003  7/9/2015    Ru-106        3.73E+OO    1.23E+Ol    4.21E+Ol u WG         W-6       376889003  7/9/2015    Sb-124        -4.69E-01   3.44E+OO    1.llE+Ol u WG        W-6        376889003  7/9/2015    Sb-125        3.22E+OO    4.17E+OO    1.40E+Ol u WG         W-6       376889003  7/9/2015     Se-75       -8.08E-01    2.08E+OO    6.81E+OO u WG         W-6       376889003  7/9/2015    Th-228         3.50E-01   3.98E+OO    9.31E+OO u WG         W-6       376889003  7/9/2015    Zn-65        -4.69E+OO    4.46E+OO    l.03E+Ol u WG         W-6       376889003  7/9/2015     Zr-95       -4.08E+OO    2.88E+OO    6.50E+OO u WG         W-15      376889007  7/9/2015    Ac-228        1.46E+Ol    8.90E+OO    2.32E+Ol u WG        W-15       376889007  7/9/2015   Ag-108m        2.00E+OO    1.47E+OO    4.90E+OO u WG        W-15       376889007  7/9/2015   Ag-llOm        6.89E-01    l.33E+OO    4.52E+OO u WG        W-15       376889007  7/9/2015    Ba-140        2.08E+OO    6.36E+OO    2.16E+Ol u WG        W-15       376889007  7/9/2015     Be-7         5.94E+OO    l.34E+Ol    4.06E+Ol u WG         W-15      376889007  7/9/2015    Ce-141       -2.74E+OO    2.96E+OO    7.79E+OO u WG         W-15      376889007  7/9/2015    Ce-144       -l.51E+OO    9.84E+OO    3.16E+Ol u WG        W-15       376889007  7/9/2015    Co-57         2.73E+OO    1.42E+OO    4.50E+OO u WG        W-15       376889007  7/9/2015    Co-58         4.62E-01    1.64E+OO    5.63E+OO u WG        W-15       376889007  7/9/2015    Co-60         3.39E-01    1.83E+OO    6.22E+OO u WG        W-15       376889007  7/9/2015     Cr-51        3.32E+OO    1.52E+Ol    5.04E+Ol u WG         W-15      376889007  7/9/2015    Cs-134       -2.25E+OO    1.79E+OO    4.80E+OO u WG         W-15      376889007  7/9/2015    Cs-137        l.19E+OO    l.33E+OO    4.63E+OO u WG        W-15       376889007  7/9/2015     Fe-59       -8.46E-01    3.42E+OO    l.09E+Ol u WG        W-15       376889007  7/9/2015      H-3        -1.07E+03    5.33E+02    1.91E+03 u WG        W-15       376889007  7/9/2015     1-131       -5.57E+OO    2.83E+OO    6.89E+OO u WG        W-15       376889007  7/9/2015     K-40        -2.97E+OO    1.77E+Ol    5.92E+Ol u WG        W-15       376889007  7/9/2015    La-140        5.76E+OO    3.22E+OO    1.15E+Ol u WG        W-15       376889007  7/9/2015    Mn-54         6.04E-01    1.48E+OO    5.09E+OO u WG        W-15       376889007  7/9/2015    Nb-95         2.14E+OO    1.99E+OO    6.67E+OO u WG        W-15       376889007  7/9/2015    Ru-103        6.87E-01    1.71E+OO    5.82E+OO u WG        W-15       376889007  7/9/2015    Ru-106       -8.27E+OO    1.41E+Ol    4.39E+Ol u WG        W-15       376889007  7/9/2015    Sb-124       -6.92E+OO    4.89E+OO    l.22E+Ol u WG        W-15       376889007  7/9/2015    Sb-125        1.59E+OO    4.41E+OO    1.44E+Ol u WG        W-15       376889007  7/9/2015     Se-75        l.95E+OO    2.18E+OO    6.90E+OO u WG        W-15       376889007  7/9/2015    Th-228        1.46E+Ol    6.35E+OO    8.63E+OO UI WG        W-15       376889007  7/9/2015    Zn-65         3.78E+OO    3.99E+OO    l.24E+Ol u WG        W-15       376889007  7/9/2015     Zr-95       -7.lOE-01    2.69E+OO    8.46E+OO u WG        W-1        377222001 7/10/2015    Ac-228        4.82E-01    5.72E+OO    1.67E+Ol u WG        W-1        377222001 7/10/2015   Ag-108m        l.37E+OO    1.16E+OO    3.82E+OO u WG        W-1        377222001 7/10/2015   Ag-llOm       -l.20E+OO    l.14E+OO    3.39E+OO u WG        W-1        377222001 7/10/2015    Ba-140       -4.61E+OO    6.89E+OO    2.20E+Ol u WG        W-1        377222001 7110/2015     Be-7        -l.06E+Ol    1.19E+Ol    3.52E+Ol u WG        W-1        377222001 7/10/2015    Ce-141        7.16E-01    2.69E+OO    8.60E+OO u D-130

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-1       377222001 7/10/2015   Ce-144       9.59E+OO    8.89E+OO    2.86E+Ol u WG         W-1       377222001 7/10/2015   Co-57        9.73E-01    l.27E+OO    3.68E+OO u WG         W-1       377222001 7/10/2015   Co-58       -3.56E-01    l.14E+OO    3.62E+OO u WG         W-1       377222001 7/10/2015   Co-60       -5.58E-01    l.26E+OO    3.94E+OO u WG         W-1       377222001 7/10/2015    Cr-51       3.06E+OO    1.34E+Ol    4.29E+Ol u WG         W-1       377222001 7/10/2015   Cs-134       6.55E-01    1.35E+OO    4.54E+OO u WG         W-1       377222001 7/10/2015   Cs-137       7.91E-01    l.27E+OO    4.33E+OO u WG         W-1       377222001 7/10/2015    Fe-59      -6.90E-02    2.93E+OO    9.77E+OO u WG         W-1       377222001 7/10/2015     H-3       -5.83E+Ol    4.35E+02    l.44E+03 u WG         W-1       377222001 7/10/2015    I-131       l.65E+OO    2.74E+OO    9.lOE+OO u WG         W-1       377222001 7/10/2015    K-40        l.52E+Ol    l.88E+Ol    4.36E+Ol U WG         W-1       377222001 7/10/2015   La-140       3.44E+OO    l.83E+OO    6.55E+OO U WG         W-1       377222001 7/10/2015   Mn-54       -7.38E-01    l.23E+OO    3.80E+OO U wd         W-1       377222001 7/10/2015   Nb-95        2.39E-01    1.33E+OO    4.42E+OO U WG         W-1       377222001 7/10/2015   Ru-103      -7.86E-01    L47E+OO     4.80E+OO U WG         W-1       377222001 7/10/2015   Ru-106       l.07E+Ol    l.06E+Ol    3.65E+Ol U WG         W-1       377222001 7/10/2015   Sb-124      -l.99E+OO    3.26E+OO    l.OlE+Ol U WG         W-1       377222001 7110/2015   Sb-125       7.61E-01    3.48E+OO    l.13E+Ol U WG         W-1       377222001 7/10/2015    Se-75      -4.19E-01    l.71E+OO    5.61E+OO U WG         W-1       377222001 7/10/2015   Th-228       4.81E+OO    3.48E+OO    8.91E+OO U WG         W-1       377222001 7/10/2015   Zn-65       -8.81E+OO    3.99E+OO    9.31E+OO U WG         W-1       377222001 7/10/2015    Zr-95      -l.82E+OO    2.12E+OO    6.35E+OO U WG         W-2       377222002 7/14/2015   Ac-228       l.97E+OO    5.92E+OO    2.06E+Ol U WG        W-2        377222002 7/14/2015  Ag-108m      -6.64E-01    l.06E+OO    3.31E+OO U WG         W-2       377222002 7114/2015  Ag-llOm      -1.31E-02    l.IOE+OO    3.39E+OO U WG         W-2       377222002 7/14/2015   Ba-140       3.37E+OO    5.45E+OO    l.82E+Ol U WG         W-2       377222002 7/14/2015    Be-7        3.07E+Ol    l.45E+Ol    3.58E+Ol U WG         W-2       377222002 7/14/2015   Ce-141       4.65E+OO    2.51E+OO    6.46E+OO U WG         W-2       377222002 7/14/2015   Ce-144      -6.09E+OO    9.04E+OO    2.66E+Ol U WG         W-2       377222002 7/14/2015   Co-57       -l.61E+OO    l.17E+OO    3.37E+OO U WG         W-2       377222002 7/14/2015   Co-58       -1.16E+OO    l.09E+OO    3.16E+OO U WG         W-2       377222002 7/14/2015   Co-60       -6.40E-01    l.19E+oo*   3.54E+OO U WG         W-2       377222002 7/14/2015    Cr-51       l.29E+Ol    l.25E+Ol    4.21E+Ol U WG         W-2       377222002 7/14/2015   Cs-134        l.26E-01   l.21E+OO    4.06E+OO U WG         W-2       377222002 7114/2015   Cs-137       2.12E+OO    l.49E+OO    4.77E+OO U WG         W-2       377222002 7/14/2015    Fe-59       l.53E+OO    2.34E+OO    8.0lE+OO U WG         W-2       377222002 7/14/2015     H-3       -4.12E+02    4.16E+02    l.43E+03 U WG         W-2       377222002 7/14/2015    I-131       l.74E+OO    l.86E+OO    6.29E+OO U WG         W-2       377222002 7/14/2015    K-40       4.54E+Ol     3.27E+Ol    4.86E+Ol U WG         W-2       377222002 7/14/2015   La-140      -6.71E-Ol    l.71E+OO    5.38E+OO U WG         W-2       377222002 7/14/2015   Mn-54        4.53E"Ol    1.39E+OO    4.15E+OO U WG         W-2       377222002 7/14/2015   Nb-95       -2.42E+OO    l.27E+OO    3.15E+OO U WG         W-2       377222002 7/14/2015   Ru-103      -7.95E-01    1.33E+OO    4.14E+OO U WG         W-2       377222002 7/14/2015   Ru-106       l.36E+OO    9.90E+OO    3.21E+Ol U WG         W-2       377222002 7/14/2015   Sb-124       7.50E-01    2.27E+OO    7.84E+OO U WG         W-2       377222002 7/14/2015   Sb-125      -4.04E+OO    3.76E+OO    1.12E+Ol U WG         W-2       377222002 7/14/2015    Se-75      -3.75E-01    l.58E+OO    5.25E+OO u WG         W-2       377222002 7/14/2015   Th-228      -5.50E+OO    3.12E+OO    9.lOE+OO u WG         W-2       377222002 7/14/2015   Zn-65       -8.52E-01    2.36E+OO    6.19E+OO u WG         W-2       377222002 7/14/2015    Zr-95      -l.59E+OO    2.09E+OO    6.46E+OO u D-131

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION        LSN      DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-3        377222003 7/14/2015    Ac-228     -3.49E+OO    5.95E+OO    l.70E+Ol u WG         W-3        377222003 7/14/2015  Ag-108m      -3.22E-Ol    l.26E+OO    4.03E+OO u WG         W-3        377222003 7/14/2015  Ag-llOm      -7.69E-Ol    l.32E+OO    4.24E+OO u WG         W-3        377222003 7/14/2015    Ba-140      4.29E+OO    6.lOE+OO    2.04E+Ol u WG         W-3        377222003 7/14/2015     Be-7       l.13E+Ol    l.08E+Ol    3.66E+Ol u WG         W-3        377222003 7/14/2015    Ce-141     -2.74E+OO    2.86E+OO    8.55E+OO u WG         W-3        377222003 7/14/2015    Ce-144      9.lOE+OO    l.09E+Ol    3.53E+Ol u WG         W-3        377222003 7/14/2015    Co-57       8.9IE-Ol    l.31E+OO    4.26E+OO u WG         W-3      . 377222003 7/14/2015    Co-58      -3.l IE+OO   l.76E+OO    3.53E+OO u WG         W-3        377222003 7/14/2015    Co-60       5.45E-Ol    l.13E+OO    3.88E+OO u WG         W-3        377222003 7/14/2015    Cr-51      -3.78E+OO    l.35E+Ol    4.39E+Ol u WG         W-3        377222003 7/14/2015    Cs-134     -2.63E+OO    l.6IE+OO    4.48E+OO u WG         W-3        377222003 7/14/2015    Cs-137      3.26E+OO    l.71E+OO    5.77E+OO u WG         W-3        377222003 7/14/2015    Fe-59      -3.24E+OO    2.43E+OO    6.20E+oo u WG         W-3        377222003 7/14/2015      H-3      -2.12E+02    4.32E+02    l.45E+03 u WG         W-3        377222003 7/14/2015     I-131      l.49E+OO    2.41E+OO    7.22E+OO u WG         W-3        377222003 7/14/2015     K-40       3.70E+Ol    l.6IE+Ol    4.86E+Ol u WG         W-3        377222003 7/14/2015    La-140     -6.20E-01    2.14E+OO    6.87E+OO u WG         W-3        377222003 7/14/2015    Mn-54      -l.12E+OO    l.19E+OO    3.52E+OO u WG         W-3        377222003 7/14/2015    Nb-95       9.52E-Ol    l.39E+OO    4.80E+OO u WG         W-3        377222003 7/14/2015    Ru-103     -3.30E+OO    l.82E+OO    4.69E+OO u WG         W-3        377222003 7/14/2015    Ru-106      5.79E+OO    l.13E+Ol    3.73E+Ol u WG         W-3        377222003 7/14/2015    Sb-124      2.00E+OO    3.06E+OO    l.09E+Ol u WG         W-3        377222003 7/14/2015    Sb-125     -3.32E+OO    3.44E+OO    l.02E+Ol u WG         W-3        377222003 7/14/2015     Se-75      6.33E-02    l.75E+OO    5.87E+OO u WG         W-3        377222003 7/14/2015    Th-228     -l.78E+OO    3.07E+OO    l.OOE+Ol u WG         W-3        377222003 7/14/2015    Zn-65      -5.50E+OO    3.llE+OO    7.20E+OO u WG         W-3        377222003 7/14/2015     Zr-95      2.lOE+OO    2.14E+OO    7.52E+OO u WG         W-7        377222004 7/10/2015    Ac-228      l.92E+OO    4.64E+OO    l.49E+Ol u WG         W-7        377222004 7/10/2015   Ag-108m      4.18E+OO    2.22E+OO    3.74E+OO UI WG         W-7        377222004 7/10/2015   Ag-llOm     -2.67E+OO    l.59E+OO    3.39E+OO u WG         W-7        377222004 7/10/2015    Ba-140     -2.37E+Ol    9.36E+OO    2.02E+Ol u WG         W-7        377222004 7/10/2015     Be-7       3.74E+OO    l.17E+Ol    4.00E+Ol u WG         W-7        377222004 7/10/2015    Ce-141      I.22E+OO    2.52E+OO    8.62E+OO u WG         W-7        377222004 7/10/2015    Ce-144     -l.54E+Ol    9.88E+OO    2.96E+Ol u WG         W-7        377222004 7/10/2015    Co-57       l.57E+OO    l.28E+OO    4.09E+OO u WG         W-7        377222004 7/10/2015    Co-58      -2.33E+OO    l.36E+OO    3.34E+OO u WG         W-7        377222004 7/10/2015    Co-60      -l.42E+OO    l.08E+OO    2.69E+OO u WG         W-7        377222004 7/10/2015     Cr-51      7.71E+OO    l.34E+Ol    4.45E+Ol u WG         W-7        377222004 7/10/2015    Cs-134      2.48E+OO    2.24E+OO    4.79E+OO u WG         W-7        377222004 7/10/2015    Cs-137       4.06E-01   l.79E+OO    4.23E+OO u WG         W-7        377222004 7/10/2015     Fe-59     -2.33E+OO    2.73E+OO    8.32E+OO u WG         W-7        377222004 7/10/2015      H-3       6.49E+Ol    4.44E+02    l.45E+03 u WG         W-7        377222004 7/10/2015     I-131      -8.38E-02   2.94E+OO-   9.49E+OO u WG         W-7        377222004 7/10/2015     K-40       4.28E+Ol    2.02E+Ol    3.57E+Ol UI WG         W-7        377222004 7/10/2015    La-140     -l.3IE+OO    2.04E+OO    5.90E+OO u WG         W-7        377222004 7/10/2015    Mn-54       l.07E+OO    l.12E+OO    4.47E+OO u WG         W-7        377222004 7/10/2015    Nb-95       -3.89E-Ol   l.52E+OO
* 4.15E+OO u WG         W-7        377222004 7/10/2015    Ru-103       4.59E-Ol   l.38E+OO    4.69E+OO u WG         W-7        377222004 7/10/2015    Ru-106     -3.03E+OO    l.02E+Ol    3.28E+Ol u D-132

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.      MDC      FLAGS TYPE      STATION       LSN       DATE     NUCLIDE          (pCi/L) .   (pCi/L)   (pCi/L)
WG         W-7       377222004  7/10/2015    Sb-124     -3.88E+OO     2.77E+OO   6.84E+OO u WG         W-7       377222004  7/10/2015    Sb-125      l.23E+OO     4.llE+OO   1.18E+Ol u WG         W-7       377222004  7/10/2015     Se-75     -l.81E+OO     l.88E+OO   5.77E+OO u WG         W-7       377222004  7/10/2015    Th-228      9.66E-01     2.79E+OO   7.85E+OO u WG         W-7       377222004  7/10/2015    Zn-65       2.81E+OO     2.14E+OO   7.17E+OO u WG         W-7       377222004  7/10/2015     Zr-95      l.68E+OO     2.llE+OO   7.24E+OO u WG         W-8       377222005  7/10/2015    Ac-228     -3.15E+OO     5.44E+OO   l.70E+Ol u WG         W-8       377222005  7/10/2015  Ag-108m       l.41E+OO     1.lOE+OO   3.71E+OO u WG        W-8        377222005  7/10/2015  Ag-llOm      -1.l lE-01    L04E+OO    3.33E+OO u WG         W-8       377222005  7/10/2015    Ba-140     2.88E+OO      7.87E+OO   2.31E+Ol u WG         W-8       377222005  7/10/2015     Be-7      -9.86E+OO     l.OSE+Ol   3.28E+Ol u WG         W-8       377222005  7/10/2015    Ce-141     -3.llE+OO     2.63E+OO   7.83E+OO u WG         W-8       377222005  7/10/2015    Ce-144      5.86E+OO     9.49E+OO   3.12E+Ol u WG         W-8       377222005  7/10/2015    Co-57      -4.68E-01     l.25E+OO   3.92E+OO u WG         W-8       377222005  7/10/2015    Co-58      -l.90E+OO     l.23E+OO   3.35E+OO u WG         W-8       377222005  7/10/2015    Co-60       l.97E+OO     l.28E+OO   4.51E+OO u WG         W-8       377222005  7/10/2015     Cr-51      2.78E+Ol     l.47E+Ol   4.79E+Ol u WG         W-8       377222005  7/10/2015    Cs-134     -4.74E-01     l.31E+OO   4.14E+OO u WG         W-8       377222005  7/10/2015    Cs-137     -2.56E-01     l.21E+OO   3.83E+OO u WG         W-8       377222005  7/10/2015     Fe-59      l.29E+OO     2.26E+OO   7.77E+OO u WG         W-8       377222005  7/10/2015      H-3      -8.09E+02     4.11E+02   l.48E+03 u WG         W-8       377222005  7/10/2015     1-131     -3.56E-01     2.71E+OO   8.97E+OO u WG         W-8       377222005  7/10/2015     K-40      -3.81E+Ol     l.85E+Ol   4.90E+Ol u WG         W-8       377222005  7/10/2015    La-140      2.69E+OO     l.60E+OO   7.50E+OO u WG         W-8       377222005  7/10/2015    Mn-54      -l.99E+OO     l.29E+OO   3.54E+OO u WG         W-8       377222005  7/10/2015    Nb-95       3.09E-01     l.07E+OO   3.55E+OO u WG         W-8       377222005  7/10/2015    Ru-103     -5.00E-01     l.51E+OO   4.19E+OO u WG         W-8       377222005  7/10/2015    Ru-106      l.32E+Ol     l.OSE+Ol   3.65E+Ol u WG         W-8       377222005* 7/10/2015    Sb-124      4.61E-01     2.15E+OO   7.39E+OO u WG         W-8       377222005  7/10/2015    Sb-125     -9.15E-01     3.40E+OO   1.llE+Ol u WG         W-8       377222005  7/10/2015     Se-75       l.02E-01    l.76E+OO   5.97E+OO u WG         W-8       377222005  7/10/2015    Th-228       7.71E-01    3.06E+OO   9.61E+OO u WG         W-8       377222005  7/10/2015    Zn-65      -l.31E+OO     3.lOE+OO   8.34E+OO u WG         W-8       377222005  7/10/2015     Zr-95      l.13E+OO     l.95E+OO   6.81E+OO u WG         W-9       37-7222006 7/14/2015    Ac-228      2.46E+OO     7.90E+OO   2.03E+Ol u WG         W-9       377222006  7/14/2015   Ag-108m       6.02E-01    l.17E+OO   3.93E+OO u WG         W-9       377222006  7/14/2015   Ag-llOm     -5.51E-01     l.12E+OO   3.52E+OO u WG         W-9       377222006  7/14/2015    Ba-140     -7.46E+OO     6.15E+OO   l.73E+Ol u WG         W-9       377222006  7/14/2015     Be-7      -l.93E+OO     1.16E+Ol   3.76E+Ol u WG         W-9       377222006  7/14/2015    Ce-141      2.95E+OO     3.61E+OO   7.41E+OO u WG         W-9       377222006  7/14/2015    Ce-144      L50E+Ol      9.54E+OO   3.08E+Ol u WG         W-9       377222006  7/14/2015    Co-57       l.57E+OO     1.14E+OO   3.76E+OO u WG         W-9       377222006  7/14/2015    Co-58       -7.64E-01    1.16E+OO   3.59E+OO u WG         W-9       377222006  7/14/2015    Co-60        9.98E-01    1.44E+OO   5.09E+OO u WG         W-9       377222006  7/14/2015     Cr-51     -9.42E+OO     l.42E+Ol   3.94E+Ol u WG         W-9       377222006  7/14/2015    Cs-134     -l.25E+OO     l.21E+OO   3.51E+OO u WG         W-9       377222006  7/14/2015    Cs-137      -7.89E-01    1.15E+OO   3.63E+OO u WG         W-9       377222006  7/14/2015     Fe-59      3.65E+OO     2.93E+OO   l.OlE+Ol u WG         W-9       377222006  7/14/2015      H-3      -3.72E+02     4.25E+02   l.45E+03 u WG         W-9       377222006  7/14/2015     1-131      l.09E+OO     2.05E+OO   6.95E+OO u D-133

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-9       377222006 7114/2015    K-40        l.02E+Ol    l.96E+Ol    4.30E+Ol  u WG         W-9       377222006 7/14/2015   La-140       l.52E+OO    2.16E+OO    7.55E+OO  u WG         W-9       377222006 7/14/2015   Mn-54        l.48E+OO    l.48E+OO    4.61E+OO  u WG         W-9       377222006 7/14/2015   Nb-95        2.21E+OO    l.20E+OO    4.26E+OO  u WG         W-9       377222006 7/14/2015   Ru-103       3.0lE-01    l.38E+OO    4.55E+OO  u WG         W-9       377222006 7/14/2015   Ru-106      -2.23E+Ol    l.15E+Ol    2.58E+Ol  u WG         W-9       377222006 7/14/2015   Sb-124       2.37E+OO    3.09E+OO    l.lOE+Ol  u WG         W-9       377222006 7/14/2015   Sb-125      -l.88E+OO    3.40E+OO    1.07E+Ol  u WG         W-9       377222006 7/14/2015    Se-75      -1.67E+OO    l.65E+OO    5.15E+OO  u WG         W-9       377222006 7/14/2015   Th-228       4.58E+OO    3.79E+OO    8.17E+OO  u WG         W-9       377222006 7/14/2015    Zn-65       1.79E+OO    2.49E+OO    7.75E+OO  U WG         W-9       377222006 7/14/2015    Zr-95       8.35E-01    2.17E+OO    7.45E+OO  U WG         W-13      377222007 7/10/2015   Ac-228      -2.90E+OO    6.33E+OO    2.07E+Ol  U WG         W-13      377222007 7/10/2015  Ag-108m       2.03E+OO    l.32E+OO    4.43E+OO  U WG         W-13      377222007 7/10/2015  Ag-llOm      -3.22E+OO    1.69E+OO    4.06E+OO  U WG         W-13      377222007 7/10/2015   Ba-140       l.45E+Ol    9.51E+OO    3.26E+Ol  U WG         W-13      377222007 7/10/2015    Be-7       -8.82E+OO    l.32E+Ol    4.20E+Ol  U WG         W-13      377222007 7110/2015   Ce-141        l.46E-01   2.90E+OO    8.35E+OO  U WG         W-13      377222007 7/10/2015   Ce-144       l.80E+OO    9.60E+OO    3.13E+Ol  U WG         W-13      377222007 7/10/2015   Co-57        2.38E+OO    l.43E+OO    4.59E+OO  U WG         W-13      377222007 7/10/2015    Co-58      -2.54E+OO    1.51E+OO    3.80E+OO  U WG         W-13      377222007 7/10/2015    Co-60       3.65E+OO    2.13E+OO    7.56E+OO  U WG         W-13      377222007 7/10/2015    Cr-51      -2.19E+OO    1.70E+Ol    5.53E+Ol  U WG        W-13       377222007 7/10/2015   Cs-134      -2.84E-01    l.66E+OO    5.26E+OO  U WG         W-13      377222007 7/10/2015   Cs-137      2.19E+OO     l.69E+OO    5.80E+OO  U WG         W-13      377222007 7/10/2015    Fe-59      -1.86E+OO    3.65E+OO    l.13E+Ol  U WG         W-13      377222007 7/10/2015     H-3        1.93E+02    4.54E+02    l.47E+03  U WG         W-13      377222007 7110/2015    I-131       3.llE+OO    3.llE+OO    l.05E+Ol  U WG         W-13      377222007 7/10/2015    K-40        5.24E+OO    2.08E+Ol    7.17E+Ol  U WG         W-13      377222007 7/10/2015   La-140      -5.33E+OO    3.35E+OO    7.78E+OO  u WG         W-13      377222007 7/10/2015   Mn-54       -2.24E+OO    2.22E+OO    5.59E+OO  u WG         W-13      377222007 7/10/2015   Nb-95       -7.75E-01    1.51E+OO    4.60E+OO  u WG         W-13      377222007 7/10/2015   Ru-103       3.08E+OO    l.76E+OO    6.00E+OO  u WG         W-13      377222007 7/10/2015   Ru-106       6.97E+OO    l.31E+Ol    4.45E+Ol  u WG         W-13      377222007 7/10/2015   Sb-124      -6.72E+OO    4.59E+OO    1. lOE+Ol u WG         W-13      377222007 7110/2015   Sb-125       1.51E+OO    4.19E+OO    1.28E+Ol  u WG         W-13      377222007 7/10/2015    Se-75      -3.70E+OO    2.40E+OO    6.25E+OO  u WG         W-13      377222007 7110/2015   Th-228      -2.99E+OO    2.91E+OO    9.37E+OO  u WG         W-13      377222007 7/10/2015    Zn-65      -2.75E+OO    4.24E+OO    1.22E+Ol  u WG         W-13      377222007 7/10/2015    Zr-95       2.62E+OO    3.llE+OO    l.05E+Ol  u WG         W-14      377222008 7/10/2015   Ac-228       6.96E+OO    5.75E+OO    2.0lE+Ol  u WG         W-14      377222008 7/10/2015  Ag-108m      -l.74E+OO    l.38E+OO    3.91E+OO  u WG         W-14      377222008 7110/2015  Ag-llOm      -1.74E-01    1.20E+OO    3.97E+OO  u WG         W-14      377222008 7/10/2015   Ba-140      -7.58E+OO    8.20E+OO    2.38E+Ol  u WG         W-14      377222008 7/10/2015    Be-7        4.76E+OO    l.31E+Ol    4.32E+Ol  u WG         W-14      377222008 7/10/2015   Ce-141       6.lOE+OO    3.lOE+OO    9.62E+OO  u WG         W-14      377222008 7/10/2015   Ce-144       4.20E+Ol    1.33E+Ol    3.06E+Ol  UI WG         W-14      377222008 7/10/2015   Co-57       -7.59E-01    l.36E+OO    4.25E+OO  u WG         W-14      377222008 7/10/2015   Co-58        2.87E-01    l.30E+OO    4.39E+OO  u WG         W-14      377222008 7/10/2015    Co-60       3.69E-01    l.53E+OO    5.23E+OO  u D-134

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC      FLAGS TYPE     STATION       LSN       DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-14      377222008  7110/2015     Cr-51      -1.48E+Ol    1.44E+Ol    4.37E+Ol u WG         W-14      377222008  7110/2015    Cs-134       l.97E+OO    1.63E+OO    5.72E+OO u WG         W-14      377222008  7110/2015    Cs-137       -1.66E-01   1.38E+OO    4.58E+OO u WG         W-14      377222008  7110/2015     Fe-59      -4.00E+OO    2.55E+OO    5.59E+OO u WG         W-14      377222008  7110/2015      H-3        2.33E+02    4.58E+02    1.47E+03 u WG         W-14      377222008  7/10/2015     I-131        4.19E-01   3.02E+OO    1.00E+Ol u WG         W-14      377222008  7110/2015     K-40       -1.07E+Ol    1.75E+Ol    6.22E+Ol u WG         W-14      377222008  7/10/2015    La-140      -1.50E+OO    2.53E+OO    7.58E+OO u WG         W-14      377222008  7110/2015    Mn-54         7.90E-01   1.62E+OO    5.23E+OO u WG         W-14      377222008  7110/2015    Nb-95       -2.51E+oo. 1.63E+OO    4.36E+OO u WG         W-14      377222008  7/10/2015    Ru-103       -4.19E-01   1.51E+OO    4.77E+OO u WG         W-14      377222008  7/10/2015    Ru-106      -9.16E-01    1.42E+Ol    4.12E+Ol u WG         W-14      377222008  7/10/2015    Sb-124       2.83E+OO    3.27E+OO    l.18E+Ol u WG         W-14      377222008  7/10/2015    Sb-125      -l.19E+OO    4.18E+OO    l.33E+Ol u WG         W-14      377222008  7/10/2015     Se-75      -2.61E+OO    2.13E+OO    6.42E+OO u WG         W-14      377222008  7/10/2015    Th-228      -5.05E+OO    3.39E+OO    9.55E+OO u WG         W-14      377222008  7/10/2015    Zn-65       -3.60E+OO    2.88E+OO    7.40E+OO u WG         W-14      377222008  7/10/2015     Zr-95      -4.08E+OO    3.14E+OO    7.78E+OO u WG         SG-1      377222009  7/10/2015    Ac-228       6.47E+OO    7.40E+OO    1.87E+Ol u WG         SG-1      377222009  7/10/2015   Ag-108m       l.37E+OO    1.66E+OO    4.86E+OO u WG         SG-1      377222009  7/10/2015   Ag-1 lOm       7.66E-01   1.46E+OO
* 5.02E+OO u WG         SG-1      37.7222009 7/10/2015    Ba-140       6.30E+OO    7.23E+OO    2.44E+Ol u WG         SG-1      377222009  7/10/2015     Be-7       -5.40E+OO    1.42E+Ol    4.44E+Ol u WG         SG-1      377222009  7/10/2015    Ce-141       l.22E+OO    3.21E+OO    1.0lE+Ol u WG        SG-1       377222009  7/10/2015    Ce-144      -2.lOE-01    1.03E+Ol    3.34E+Ol u WG         SG-1      377222009  7/10/2015    Co-57       -4.35E-Ol    1.36E+OO    4.35E+OO u WG        SG-1       377222009  7/10/2015    Co-58       -8.56E-01    1.65E+OO    4.31E+OO u
 .WG         SG-1      377222009  7/10/2015    Co-60       -6.76E-01    1.38E+OO    4.24E+OO u WG         SG-1      377222009  7/10/2015     Cr-51       8.42E+OO    1.49E+Ol    5.05E+Ol u WG         SG-1      377222009  7/10/2015    Cs-134      -1.67E-01    1.64E+OO    5.35E+OO u WG         SG-1      377222009  7/10/2015    Cs-137       2.29E+OO    3.66E+OO    5.27E+OO u WG         SG-1      377222009  7/10/2015     Fe-59      -4.76E+OO    3.89E+OO    l.12E+Ol u WG         SG-1      377222009  7/10/2015      H-3       -4.56E+02    4.10E+02    1.42E+03 u WG         SG-1      377222009  7/10/2015     I-131      -l.34E+OO    2.94E+OO    9.32E+OO u WG         SG-1      377222009  7/10/2015     K-40       -2.81E+OO    2.06E+Ol    6.88E+Ol u WG        SG-1       377222009  7/10/2015    La-140       3.60E+OO    3.30E+OO    l.16E+Ol u WG        SG-1       377222009  7/10/2015    Mn-54        1.0lE+OO    1.79E+OO    5.54E+OO u WG        SG-1       377222009  7/10/2015    Nb-95       -1.61E+OO    1.61E+OO    4.llE+OO u WG        SG-1       377222009  7/10/2015    Ru-103      -7.16E-01    l.57E+OO    4.86E+OO u WG        SG-1       377222009  7/10/2015    Ru-106      -5.42E+Ol    l.87E+Ol    3.15E+Ol u WG         SG-1      377222009  7/10/2015    Sb-124       7.85E+OO    6.69E+OO    1.48E+Ol u WG        SG-1       377222009  7/10/2015    Sb-125      -2.31E+OO    4.22E+OO    l.31E+Ol u WG         SG-1      377222009  7110/2015     Se-75       2.00E+OO    2.02E+OO    6.90E+OO u WG         SG-1      377222009  7/10/2015    Th-228      -3.42E+OO    3.12E+OO    9.49E+OO u WG         SG-1      377222009  7/10/2015    Zn-65       -2.06E+OO    3.96E+OO    1.06E+Ol u WG         SG-1      377222009  7/10/2015     Zr-95       l.70E+OO    3.04E+OO    7.62E+OO u WG        SG-2       377222010  7/10/2015    Ac-228       8.20E+OO    7.53E+OO    2.22E+Ol u WG        SG-2       377222010  7/10/2015   Ag-108m       l.17E+OO    l.19E+OO    4.lOE+OO u WG        SG-2       377222010  7/10/2015   Ag-llOm       3.64E-01    l.57E+OO    5.16E+OO u WG        SG-2       377222010  7/10/2015    Ba-140      -9.33E+OO    9.0lE+OO    2.69E+Ol u D-135

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC    STD.DEV.       MDC       FLAGS TYPE      STATION       LSN        DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         SG-2      377222010   7/10/2015    Be-7        -2.76E+OO   l.32E+OI    4.33E+OI u WG         SG-2      377222010   7/10/2015   Ce-141       -4.21E-OI   2.72E+OO    8.87E+OO u WG         SG-2      377222010   7/10/2015   Ce-144       -l.25E+OI   l.03E+OI    2.96E+OI u WG         SG-2      377222010   7/10/2015   Co-57         l.67E+OO   l.27E+OO    4.04E+OO u WG         SG-2      377222010   7/10/2015   Co-58         2.22E+OO   l.33E+OO    4.68E+OO u WG         SG-2      377222010   7/10/2015   Co-60        -l.06E+OO   l.82E+OO    5.85E+OO u WG         SG-2      377222010   7/10/2015    Cr-51       -4.19E-OI   l.34E+OI    4.34E+OI u WG         SG-2      377222010   7/10/2015   Cs-134       -1.02E+OO   l.65E+OO    5.22E+OO u WG         SG-2      377222010   7/10/2015   Cs-137     * -2.21E+OO   2.13E+OO    5.26E+OO u WG         SG-2      377222010   7/10/2015    Fe-59       -4.77E-02   2.87E+OO    9.34E+OO u WG         SG-2      377222010   7/10/2015     H-3        -4.17E+02   4.10E+02    l.41E+03 u WG         SG-2      377222010   7/10/2015    1-131        2.65E+OO   3.21E+OO    l.06E+OI u WG         SG-2      377222010   7/10/2015    K-40         4.13E+OI   2.20E+OI    5.37E+Ol u WG         SG-2      377222010 . 7/10/2015   La-140       -4.06E+OO   3.49E+OO    9.70E+OO u WG         SG-2      377222010   7/10/2015   Mn-54         4.80E-01   l.20E+OO    4.IOE+OO u WG         SG-2      377222010   7/10/2015   Nb-95        -l.08E+OO   l.74E+OO    5.58E+OO u WG         SG-2      377222010   7/10/2015   Ru-103       -2.48E+OO   2.23E+OO    5.66E+OO u WG         SG-2      377222010   7/10/2015   Ru-106       -6.56E+OO   1.f5E+Ol    3.89E+OI u WG         SG-2      377222010   7/10/2015   Sb-124        2.55E+OO   3.60E+OO    l.26E+OI u WG         SG-2      377222010   7/10/2015   Sb-125        4.22E+OO   4.06E+OO    l.39E+OI u WG         SG-2      377222010   7/10/2015    Se-75       -2.21E+OO   2.12E+OO    6.44E+OO u WG         SG-2      377222010   7/10/2015   Th-228        1.41E+OO   3.70E+OO    9.50E+OO u WG         SG-2      377222010   7/10/2015    Zn-65       -5.98E+OO   4.45E+OO    9.65E+OO u WG         SG-2      377222010   7/10/2015    Zr-95       -4.29E+OO   2.73E+OO    7.43E+OO u WG         SG-4      377222011   7/10/2015   Ac-228        2.93E+OO   6.18E+OO    l.75E+OI u WG         SG-4      377222011   7/10/2015  Ag-108m       -l.48E+OO   1.21E+OO    3.54E+OO u WG         SG-4      377222011   7/10/2015  Ag-llOm        1.16E+OO   l.48E+OO    4.44E+OO u WG         SG-4      377222011   7/10/2015   Ba-140         6.15E-OI  7.00E+OO    2.31E+OI u WG         SG-4      377222011   7/10/2015    Be-7        -4.32E+OO   9.97E+OO    3.17E+OI u WG         SG-4      377222011   7/10/2015   Ce-141        9.46E+OO   5.00E+OO    6.59E+OO UI WG         SG-4      377222011   7/10/2015   Ce-144        5.78E+OO   7.61E+OO    2.59E+OI u WG         SG-4      377222011   7/10/2015    Co-57        l.58E+OO   l.IOE+OO    3.70E+OO u WG         SG-4      377222011   7/10/2015    Co-58        l.51E+OO   l.32E+OO    4.66E+OO u WG         SG-4      377222011   7/10/2015    Co-60        -7.34E-02  l.40E+OO    4.66E+OO u WG         SG-4      377222011   7/10/2015    Cr-51        l.84E+OI   l.45E+Ol    4.98E+OI u WG         SG-4      377222011   7/10/2015   Cs-134         6.13E-01  1.29E+OO    4.48E+OO u WG         SG-4      377222011   7/10/2015   Cs-137        -9.42E-OI  l.44E+OO    4.35E+OO u WG         SG-4      377222011   7/10/2015    Fe-59        l.74E+OO   2:86E+OO    9.55E+OO u WG         SG-4      377222011   7/10/2015     H-3        -4.03E+02   4.30E+02    l.48E+03 u WG         SG-4      377222011   7/10/2015    I-131        3.66E+OO   2.97E+OO    l.02E+Ol u WG         SG-4      377222011   7/10/2015    K-40        -7.00E+OO   1.74E+OI    6.03E+OI u WG         SG-4      377222011   7/10/2015   La-140         l.92E-01  2.31E+OO    7.70E+OO u WG         SG-4      377222011   7/10/2015   Mn-54        -2.85E+OO   l.45E+OO    3.44E+OO u WG         SG-4      377222011   7110/2015   Nb-95          5.00E-01  l.39E+OO    4.38E+OO u WG         SG-4      377222011   7/10/2015   Ru-103       -2.28E+OO   l.66E+OO    4.70E+OO u WG         SG-4      377222011   7/10/2015   Ru-106       -6.66E+OO   l.30E+OI    3.43E+OI u WG         SG-4      377222011   7/10/2015   Sb-124       -4.14E+OO   3.25E+OO    8.08E+OO u WG         SG-4      377222011   7/10/2015   Sb-125        -9.32E-OI  3.57E+OO    1.17E+OI u WG         SG-4      377222011   7/10/2015    Se-75       -3.74E+OO   l.98E+OO    4.99E+OO u WG         SG-4      377222011   7/10/2015   Th-228       -1.83E+OO   2.75E+OO    8.47E+OO u D-136

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN        DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         SG-4      377222011   7/10/2015     Zn-65       1.85E+OO    l.97E+OO    6.53E+OO  u WG         SG-4      377222011   7/10/2015     Zr-95       -5.0IE-01   l.9IE+OO    6.23E+OO  u WG         SG-5      377222012   7/10/2015    Ac-228       l.07E+Ol    8.48E+OO    l.96E+Ol  u WG         SG-5      377222012   7/10/2015   Ag-108m      -1.87E+OO    l.22E+OO    3.29E+OO  u WG         SG-5      377222012   7/10/2015   Ag-llOm      -2.27E+OO    l.20E+OO    2.68E+OO  u WG         SG-5      377222012   7/10/2015    Ba-140        5.38E-Ol   7.73E+OO    2.50E+Ol  u WG         SG-5      377222012   7110/2015      Be-7       2.6IE+Ol    l.36E+Ol    4.47E+Ol  u WG         SG-5      377222012   7/10/2015    Ce-141       l.15E+OO    2.91E+OO    8.47E+OO  u WG         SG-5      377222012   7/10/2015    Ce-144       l.09E+Ol    9.53E+OO    3.1 lE+Ol u WG         SG-5      377222012   7/10/2015     Co-57        I.79E-Ol   l.25E+OO    3.95E+OO  u WG         SG-5     .377222012   7/10/2015     Co-58        5.60E-Ol   2.19E+OO    4.47E+OO  u WG         SG-5      377222012   7/10/2015     Co-60       l.49E+OO    l.36E+OO    4.9IE+OO  u WG         SG-5      377222012   7/10/2015     Cr-51      -l.52E+Ol    l.30E+Ol    3.87E+Ol  u WG         SG-5      377222012   7/10/2015    Cs-134       l.IIE+OO    l.62E+OO    4.98E+OO  u WG         SG-5      377222012   7/10/2015    Cs-137       2.73E+OO    l.37E+OO    4.74E+OO  u WG         SG-5      377222012   7/10/2015     Fe-59       3.63E+OO    2.60E+OO    9.22E+OO  u WG         SG-5      377222012   7/10/2015      H-3       -5.66E+02    4.26E+02    I.49E+03  u WG         SG-5      377222012   7/10/2015     I-131      -2.21E+OO    2.75E+OO;   8.43E+OO  u WG         SG-5      377222012   7/10/2015     K-40       -8.02E+OO    2.0IE+Ol    6.67E+Ol  u WG         SG-5      377222012   7/10/2015    La-140      -5.36E-Ol    2.65E+OO    8.48E+OO  u WG         SG-5      377222012   7/10/2015    Mn-54        1.85E+OO    l.31E+OO    4.59E+OO  u WG         SG-5      377222012   7/10/2015     Nb-95      -3.30E-Ol    l.47E+OO    4.65E+OO  u WG         SG-5      377222012   7/10/2015    Ru-103       1.25E+OO    l.37E+OO    4.19E+OO  u WG         SG-5      377222012   7/10/2015    Ru-106       2.0IE+Ol    l.50E+Ol    4.70E+Ol  u WG         SG-5      377222012   7/10/2015    Sb-124      -7.91E-Ol    2.70E+OO    8.37E+OO  u WG         SG-5      377222012   7/10/2015    Sb-125       1.24E+OO    3.71E+OO    l.23E+Ol  u WG         SG-5      377222012   7/10/2015     Se-75       3.34E-01    l.84E+OO    6.22E+OO  u WG         SG-5      377222012   7/10/2015    Th-228       4.56E+OO    5.07E+OO    1.02E+Ol  u WG         SG-5      377222012   7/10/2015     Zn-65       3.17E+OO    3.37E+OO    l.04E+Ol  u WG         SG-5      377222012 . 7/10/2015     Zr-95      -2.74E+OO    2.48E+OO    7.18E+OO  u WG         SG-1      379297001   7/10/2015    ALPHA        8.78E-01    l.12E+OO    3.58E+OO  u WG         SG-1      379297001   7/10/2015     BETA        2.00E+OO    7.84E-01    2.38E+OO  u WG         SG-2      379297002   7/10/2015    ALPHA       -4.69E-01    1.12E+OO    3.68E+OO  u WG         SG-2      379297002   7/10/2015     BETA        3.49E+OO    l.17E+OO    3.56E+OO  u WG         SG-4      379297003   7/10/2015    ALPHA        9.56E-Ol    l.18E+OO    3.79E+OO  u WG         SG-4      379297003   7/10/2015     BETA        4.35E+OO    8.92E-01    2.47E+OO WG         SG-5      379297004   7/10/2015    ALPHA        1.24E+OO    l.21E+OO    3.89E+OO  u WG         SG-5      379297004   7/10/2015    BETA         4.34E+OO    l.OIE+OO    3.00E+OO WG        W-1        382797001   10/6/2015    Ac-228       6.34E+OO    7.98E+OO    1.23E+Ol  u WG        W-1        382797001   10/6/2015   Ag-108m      -4.15E-01    8.63E-01    2.78E+OO  u WG         W-1       382797001   10/6/2015   Ag-llOm      -l.43E+OO    9.86E-01    2.73E+OO  u WG        W-1        382797001   10/6/2015    Ba-140      -3.97E-02    3.83E+OO    L24E+Ol   u WG         W-1       382797001   10/6/2015     Be-7        3.70E+OO    8.60E+OO    2.85E+Ol  u WG        W-1        382797001   10/6/2015    Ce-141      -2.64E+OO    l.64E+OO    4.83E+OO  u WG        W-1        382797001   10/6/2015    Ce-144       5.49E+OO    6.36E+OO    2.09E+Ol  u WG        W-1        382797001   10/6/2015     Co-57       l.12E+OO    8.43E-01    2.72E+OO  u WG         W-1       382797001   10/6/2015     Co-58      -l.39E-01    9.30E-01    3.07E+OO  u WG        W-1        382797001   10/6/2015     Co-60      -1.14E+OO    l.56E+OO    3.92E+OO  u WG        W-1        382797001   10/6/2015     Cr-51      -3.62E-01    7.97E+OO    2.68E+Ol  u WG        W-1        382797001   10/6/2015    Cs-134      -3.99E-02    l.06E+OO    3.51E+OO  u D-137

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE     STATION       LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-1       382797001 10/6/2015    Cs-137       3.77E-Ol    1.02E+OO    3.31E+OO u WG         W-1       382797001 10/6/2015     Fe-59       3.64E+OO    2.lOE+OO    6.32E+OO u WG         W-1       382797001 10/6/2015      H-3       -l.69E+02    4.28E+02    l.43E+03 u WG         W-1       382797001 10/6/2015     1-131      -2.21E-Ol    l.22E+OO    4.06E+OO u WG         W-1       382797001 10/6/2015     K-40        l.88E+Ol    l.51E+Ol    3.60E+Ol u WG         W-1       382797001 10/6/2015    La-140      -l.62E+OO    l.34E+OO    3.SOE+OO u WG         W-1       382797001 10/6/2015    Mn-54       -3.98E-Ol    l.02E+OO    3.31E+OO u
 .WG         W-1       382797001 10/6/2015    Nb-95        l.03E+OO    7.68E-Ol    4.09E+OO u WG         W-1       382797001 10/6/2015    Ru-103      -2.47E-Ol    1.28E+OO    3.33E+OO u WG         W-1       382797001 10/6/2015    Ru-106       7.83E+OO    8.16E+OO    2.68E+Ol u WG         W-1       382797001 10/6/2015    Sb-124       3.04E+OO    2.74E+OO    9.35E+OO u WG        W-1        382797001 10/6/2015    Sb-125      -l.94E-01    2.66E+OO    8.76E+OO u WG        W-1        382797001 to/6/2015     Se-75      -l.15E+OO    l.17E+OO    3.78E+OO u WG         W-1       382797001 10/6/2015    Th-228      -3.67E+OO    2.87E+OO    6.53E+OO u WG         W-1       382797001 10/6/2015    Zn-65       -l.67E+OO    2.38E+OO    6.13E+OO u WG         W-1       382797001 10/6/2015     Zr-95      -8.06E-01    l.75E+OO    5.36E+OO u WG         W-3       382797002 10/6/2015    Ac-228       l.14E+Ol    6.19E+OO    l.09E+Ol UI WG         W-3       382797002 10/6/2015   Ag-108m      -l.60E+OO    8.61E-Ol    l.93E+OQ u WG         W-3       382797002 10/6/2015   Ag-1 lOm      2.31E+OO    9.56E-Ol    2.45E+OO u WG         W-3       382797002 10/6/2015    Ba-140       3.69E+OO    3.14E+OO    l.05E+Ol u WG         W-3       382797002 10/6/2015     Be-7        l.72E+Ol    l.OSE+Ol    l.98E+Ol u WG         W-3       382797002 10/6/2015    Ce-141       4.41E+OO    l.90E+OO    3.86E+OO UI WG         W-3       382797002 10/6/2015    Ce-144      -2.42E-Ol    4.98E+OO    l.61E+Ol U WG        W-3        382797002 10/6/2015    Co-57       -5.26E-Ol    6.76E-Ol    2.13E+OO U WG         W-3       382797002 10/6/2015    Co-58        7.06E-Ol    7.31E-Ol    2.49E+OO U WG         W-3       382797002 10/6/2015    Co-60       -6.14E-01    1.0lE+OO    2.72E+OO U WG         W-3       382797002 10/6/2015     Cr-51       l.27E+OO    6.20E+OO    2.04E+Ol U WG         W-3       382797002 10/6/2015    Cs-134      -9.69E-Ol    8.43E-01    2.46E+OO U WG         W-3       382797002 10/6/2015    Cs-137       5.16E-03    8.93E-Ol    2.53E+OO U WG         W-3       382797002 10/6/2015     Fe-59       7.51E-Ol    1.44E+OO    4.SOE+OO U WG         W-3       382797002 10/6/2015      H-3        l.02E+02    4.72E+02    l.54E+03 U WG         W-3       382797002 10/6/2015     1-131      -6.57E-01    l.03E+OO    3.23E+OO U WG         W-3       382797002 10/6/2015     K-40        2.73E+Ol    l.47E+Ol    3.93E+Ol U WG         W-3       382797002 10/6/2015    La-140       3.54E-Ol    l.06E+OO    3.56E+OO U WG         W-3       382797002 10/6/2015    Mn-54       -2.SOE-01    7.05E-Ol    2.32E+OO U WG        W-3        382797002 10/6/2015    Nb-95        4.79E-Ol    8.89E-Ol    2.53E+OO U WG        W-3        382797002 10/6/2015    Ru-103      -l.65E-Ol    8.06E-Ol    2.32E+OO U WG        W-3        382797002 10/6/2015    Rt\-106     -3.47E+OO    6.85E+OO    2.20E+Ol U WG        W-3        382797002 10/6/2015    Sb-124       3.60E+OO    2.15E+OO    6.48E+OO U WG         W-3       382797002 10/6/2015    Sb-125      -3.26E+OO    2.90E+OO    6.49E+OO U WG         W-3       382797002 10/6/2015     Se-75       8.22E-Ol    9.66E-01    3.21E+OO U WG         W-3       382797002 10/6/2015    Th-228       4.40E+OO    2.13E+OO    3.SOE+OO WG         W-3       382797002 10/6/2015    Zn-65       -3.03E-Ol    2.0lE+OO    5.56E+OO u WG         W-3       382797002 10/6/2015     Zr-95      -4.84E-01    l.41E+OO    4.49E+OO u WG         W-10      382797003 10/6/2015    Ac-228       8.09E-Ol    3.34E+OO    l.06E+Ol u WG         W-10      382797003 10/6/2015   Ag-108m       5.87E-01    6.94E-01    2.25E+OO u WG        W-10       382797003 10/6/2015   Ag-llOm       7.12E-Ol    6.98E-Ol    2.33E+OO U WG        W-10       382797003 10/6/2015    Ba-140      -5.42E+OO    3.13E+OO    9.00E+OO U WG        W-10       382797003 10/6/2015     Be-7        3.32E+OO    6.45E+OO    2.09E+Ol U WG         W-10      382797003 10/6/2015    Ce-141      -5.lOE-01    l.82E+OO    4.28E+OO U D-138

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-10      382797003 10/6/2015    Ce-144      -3.19E+OO    5.22E+OO    1.64E+Ol u WG         W-10      382797003 10/6/2015    Co-57       -1.07E+OO    7.37E-01    2.17E+OO u WG         W-10      382797003 10/6/2015    Co-58       -2.97E-01    7.12E-01    2.27E+OO u WG         W-10      382797003 10/6/2015    Co-60       -l.30E+OO    7.68E-01    2.05E+OO u WG         W-10      382797003 10/6/2015     Cr-51       1.02E+Ol    7.47E+OO    2.25E+Ol u WG         W-10      382797003 10/6/2015    Cs-134       1.74E-01    7.36E-01    2.36E+OO u WG         W-10      382797003 10/6/2015    Cs-137       5.59E-01    7.5lE-01    2.52E+OO u WG         W-10      382797003 10/6/2015     Fe-59      -8.47E-01    1.40E+OO    4.48E+OO u WG         W-10      382797003 10/6/2015      H-3       -2.99E+02    4.69E+02    1.59E+03 u WG         W-10      382797003 10/6/2015     1-131      -5.16E-01    9.56E-01    3.05E+OO u WG         W-10      382797003 10/6/2015     K-40        2.85E+Ol    l.32E+Ol    2.81E+Ol ur WG         W-10      382797003 10/6/2015    La-140      -1.46E+OO    1.09E+OO    3.04E+OO u WG         W-10      382797003 10/6/2015    Mn-54       -2.18E-01    6.84E-01    2.19E+OO u WG        W-10       382797003 10/6/2015    Nb-95        l.38E+OO    8.39E-01    2.42E+OO u WG         W-10      382797003 10/6/2015    Ru-103       6.33E-02    7.53E-01    2.23E+OO u WG         W-10      382797003 10/6/2015    Ru-106      -5.12E+OO    7.63E+OO    2.llE+Ol u WG         W-10      382797003 10/6/2015'   Sb-124      -1.86E+OO    1.75E+OO    5.26E+OO u WG        W-10       382797003 10/6/2015    Sb-125      -2.75E-01    2.15E+OO    6.90E+OO u WG        W-10       382797003 10/6/2015     Se-75       6.96E-01    1.00E+OO    3.35E+OO u WG         W-10      382797003 10/6/2015    Th-228      -6.10E+OO    2.57E+OO    5.0IE+OO u WG        W-10       382797003 10/6/2015    Zn-65        2.99E+OO    1.67E+OO    4.94E+OO u WG        W-10       382797003 10/6/2015     Zr-95      -l.22E+OO    l.31E+OO    4.02E+OO u WG        W-11       382797004 10/6/2015    Ac-228       6.76E+OO    5.60E+OO    1.82E+Ol u WG        W-11       382797004 10/6/2015   Ag-108m       5.76E-01    l.21E+OO    4.llE+OO u WG        W-11       382797004 101612015   Ag-llOm       1.05E+OO    1.28E+OO    4.30E+OO u WG        W-11       382797004 10/6/2015    Ba-140      -7.65E+OO    7.07E+OO    2.07E+Ol u WG        W-11       382797004 10/6/2015     Be-7       -6.02E+OO    1.16E+Ol    3.67E+Ol u WG        W-11       382797004 10/6/2015    Ce-141       1.65E+OO    2.02E+OO    6.86E+OO u WG        W-11       382797004 10/6/2015    Ce-144       2.47E+OO    8.09E+OO    2.74E+Ol u WG        W-11       382797004 10/6/2015    Co-57        8.67E-Ol    1.22E+OO    3.49E+OO u WG        W-11       382797004 10/6/2015    Co-58       -2.42E+OO    1.62E+OO    3.53E+OO u WG        W-11       382797004 10/6/2015    Co-60        9.83E-Ol    1.41E+OO    4.99E+OO u WG        W-11       382797004 101612015     Cr-51      2.21E+OO     1.14E+Ol    3.90E+Ol u WG        W-11       382797004 10/6/2015    Cs-134       2.77E-01    1.25E+OO    4.27E+OO u WG        W-11       382797004 10/6/2015    Cs-137       4.29E-01    1.46E+OO    4.79E+OO u WG        W-11       382797004 10/6/2015     Fe-59       1.28E+OO    3.14E+OO    1.05E+Ol u WG        W-11       382797004 10/6/2015      H-3       -2.09E+02    4.25E+02    1.43E+03 u WG        W-11       382797004 10/6/2015     1-131      -4.64E-Ol    l.86E+OO    5.39E+OO u WG        W-11       382797004 10/6/2015     K-40        3.65E+OO    l.85E+Ol    2.78E+Ol u WG        W-11       382797004 10/6/2015    La-140       3.41E-01    l.63E+OO    5.53E+OO u WG        W-11       382797004 10/6/2015    Mn-54       -9.51E-Ol    1.19E+OO    3.60E+OO u WG        W-11       382797004 10/6/2015    Nb-95       -3.08E-Ol    l.49E+OO    4.87E+OO u WG        W-11       382797004 10/6/2015    Ru-103      -2.52E+OO    l.57E+OO    3.44E+OO u WG        W-11       382797004 10/6/2015    Ru-106      -2.09E+OO    1.09E+Ol    3.47E+Ol u WG        W-11       382797004 10/6/2015    Sb-124       3.23E+OO    4.23E+OO    1.46E+Ol u WG        W-11       382797004 10/6/2015    Sb-125      -2.55E+OO    3.45E+OO    1.08E+Ol u WG        W-11       382797004 10/6/2015     Se-75      -l.06E+OO    l.68E+OO    5.14E+OO u WG        W-11       382797004 10/6/2015    Th-228       5.95E+OO    3.74E+OO    9.76E+OO u WG        W-11       382797004 10/6/2015    Zn-65        5.42E+OO    2.14E+OO    7.86E+OO u WG        W-11       382797004 10/6/2015     Zr-95      -6.33E-01    1.82E+OO    5.88E+OO u D-139

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-12      382797005 10/612015   Ac-228       4.51E+OO    6.40E+OO    2.09E+Ol u WG         W-12      382797005 10/6/2015  Ag-108m        l.lOE-01   1.35E+OO    4.07E+OO u WG         W-12      382797005 10/6/2015  Ag-llOm      -1.03E+OO    l.29E+OO    3.98E+OO u WG         W-12      382797005 10/6/2015   Ba-140       1.44E+OO    6.38E+OO    2.07E+Ol u WG         W-12      382797005 10/6/2015    Be-7        3.15E+OO    1.14E+Ol    3.72E+Ol u WG         W-12      382797005 10/6/2015   Ce-141       2.02E+OO    2.81E+OO    8.27E+OO u WG         W-12      382797005 10/6/2015   Ce-144       7.43E+OO    l.24E+Ol    3.06E+Ol u WG         W-12      382797005 10/6/2015   Co-57       -1.14E+OO    l.29E+OO    3.98E+OO u WG         W-12      382797005 10/6/2015   Co-58        4.36E-01    l.26E+OO    4.23E+OO u WG         W-12      382797005 10/6/2015   Co-60        4.09E+OO    l.75E+OO    6.0lE+OO u WG         W-12      382797005 10/6/2015    Cr-51       9.36E+OO    l.27E+Ol    4.17E+Ol u WG         W-12      382797005 10/6/2015   Cs-134       1.04E-01    l.25E+OO    4.14E+OO u WG         W-12      382797005 10/6/2015   Cs-137       l.lOE+OO    l.44E+OO    4.95E+OO u WG         W-12      382797005 10/6/2015    Fe-59      -3.48E+OO    2.63E+OO    7.19E+OO u WG         W-12      382797005 10/6/2015     H-3        l.01E+02    4.23E+02    l.38E+03 u WG         W-12      382797005 10/6/2015    1-131      -2.49E+OO    2.42E+OO    7.31E+OO u WG         W-12      382797005 10/6/2015    K-40        l.78E+Ol    l.99E+Ol    3.09E+Ol u WG         W-12      382797005 10/6/2015   La-140      -1.24E+OO    2.33E+OO    7.04E+OO u WG         W-12      382797005 10/6/2015   Mn-54       -2.27E+OO    l.29E+OO    3.14E+OO u WG         W-12      382797005 10/6/2015   Nb-95        5.19E-Ol    1.54E+OO    4.55E+OO u WG         W-12      382797005 10/6/2015   Ru-103      -4.58E-Ol    l.41E+OO    4.42E+OO u WG         W-12      382797005 10/6/2015   Ru-106       2.92E-Ol    l.34E+Ol    3.91E+Ol u WG         W-12      382797005 10/6/2015   Sb-124      -l.03E+OO    3.14E+OO    1.0lE+Ol u WG         W-12      382797005 10/6/2015   Sb-125       5.lOE+OO    3.75E+OO    l.25E+Ol u WG         W-12      382797005 10/6/2015    Se-75       6.80E-Ol    l.74E+OO    5.92E+OO u WG         W-12      382797005 10/6/2015   Th-228      -4.14E+OO    3.0lE+OO    8.80E+OO u WG         W-12      382797005 10/6/2015   Zn-65       2.91E+OO     3.05E+OO    9.63E+OO u WG         W-12      382797005 10/6/2015    Zr-95      -3.23E+OO    2.20E+OO    5.80E+OO u WG         MW-20     382797006 10/6/2015   Ac-228      -6.57E+OO    5.56E+OO    1.56E+Ol u WG         MW-20     382797006 10/6/2015  Ag-108m      -3.46E-Ol    1.15E+OO    3.78E+OO u WG         MW-20     382797006 10/6/2015  Ag-llOm        l.41E-Ol   1.1 lE+OO   3.67E+OO u WG         MW-20     382797006 10/6/2015   Ba-140       4.44E+OO    5.74E+OO    l.96E+Ol u WG         MW-20     382797006 10/6/2015    Be-7        6.24E+OO    l.13E+Ol    3.84E+Ol u WG         MW-20     382797006 10/6/2015   Ce-141       2.19E+OO    2.66E+OO    7.85E+OO u WG         MW-20     382797006 10/6/2015   Ce-144      -l.74E+OO    9.20E+OO    2.66E+Ol u WG         MW-20     382797006 10/6/2015   Co-57       -2.34E-Ol    1.14E+OO    3.76E+QO u WG         MW-20     382797006 10/6/2015   Co-58        l.74E+OO    l.26E+OO    4.13E+OO u WG         MW-20     382797006 10/6/2015   Co-60        3.04E+OO    l.56E+OO    5.21E+OO u WG         MW-20     382797006 10/6/2015    Cr-51      -2.15E+Ol    l.39E+Ol    3.83E+Ol u WG         MW-20     382797006 10/6/2015   Cs-134       1.1 lE+OO   l.60E+OO    5.34E+OO u WG         MW-20     382797006 10/6/2015   Cs-137      -4.28E-02    l.28E+OO    4.17E+OO u WG         MW-20     382797006 10/6/2015    Fe-59      -7.83E-02    2.46E+OO    8.17E+OO u WG         MW-20     382797006 10/6/2015     H-3       -2.76E+02    3.82E+02    l.30E+03 u WG         MW-20     382797006 10/6/2015    1-131      -7.76E-Ol    l.98E+OO    6.52E+OO u WG         MW-20     382797006 10/6/2015    K-40        4.42E+Ol    l.90E+Ol    3.92E+Ol UI WG         MW-20     382797006 10/6/2015   La-140       6.35E-Ol    l.69E+OO    5.06E+OO u WG         MW-20     382797006 10/6/2015   Mn-54        4.61E-02    l.31E+OO    4.24E+OO U WG         MW-20     382797006 10/6/2015   Nb-95       2.05E+OO     l.25E+OO    4.23E+OO U WG         MW-20     382797006 10/6/2015   Ru-103      -3.05E+OO    l.57E+OO    4.llE+OO U WG         MW-20     382797006 10/6/2015   Ru-106       4.0lE+OO    l.04E+Ol    3.50E+Ol U D-140

Donald C. Cook Nuclear Plant .         Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         MW-20     382797006 10/6/2015     Sb-124      -6.75E-01   3.0SE+OO    9.69E+OO u WG         MW-20     382797006 10/6/2015     Sb-125     -5.50E+OO    3.83E+OO    l.12E+Ol u WG         MW-20     382797006 10/6/2015      Se-75       l.lOE+OO   2.lOE+OO    6.39E+OO u WG         MW-20     382797006 10/6/2015     Th-228      2.40E+OO    3.41E+OO    7.83E+OO u WG         MW-20     382797006 10/6/2015      Zn-65      4.llE+OO    2.40E+OO    7.77E+OO u WG         MW-20     382797006 10/6/2015      Zr-95      4.62E+OO    2.46E+OO    8.21E+OO u WG         MW-21     382797007 10/6/2015     Ac-228      4.61E+OO    6.47E+OO    2.15E+Ol u WG         MW-21     382797007 10/6/2015   Ag-108m       -7.51E-Ol   l.31E+OO    4.19E+OO u WG         MW-21     382797007 10/6/2015   Ag-llOm      -1.27E+OO    1.43E+OO    4.21E+OO u WG         MW-21     382797007 10/6/2015     Ba-140      4.63E+OO    6.81E+OO    2.30E+Ol u WG         MW-21     382797007 10/6/2015       Be-7     -1.0SE+Ol    l.34E+Ol    4.17E+Ol u WG         MW-21     382797007 10/6/2015     Ce-141      1.31E+OO    2.75E+OO    8.12E+OO u WG         MW-21     382797007 10/6/2015     Ce-144      1.29E+Ol    9.05E+OO    3.02E+Ol u WG         MW-21     382797007 10/6/2015      Co-57      1.55E+OO    1.49E+OO    3.24E+OO u WG         MW-21     382797007 10/6/2015      Co-58      3.35E+OO    9.87E-01    4.32E+OO u WG        MW-21      382797007 10/6/2015
* Co-60      -6.03E-01   1.53E+OO    4.83E+OO u WG        MW-21      382797007 10/6/2015      Cr-51      9.40E+OO    l.34E+Ol    4.38E+Ol u WG         MW-21     382797007 10/6/2015     Cs-134      1.43E+OO    l.39E+OO    4.86E+OO u WG         MW-21     382797007 10/6/2015     Cs-137      1.15E+OO    1.54E+OO    5.16E+OO u WG        MW-21      382797007 10/6/2015      Fe-59       3.42E-01   3.12E+OO    1.02E+Ol u WG        MW-21      382797007 101612015       H-3      -4.53E+02    3.63E+02    1.26E+03 u WG        MW-21      382797007 10/6/2015      I-131       5.62E-01   2.26E+OO    7.68E+OO u WG        MW-21      382797007 101612015      K-40      -3.28E+OO    1.95E+Ol    6.57E+Ol u WG        MW-21      382797007 101612015     La~140      2.86E+OO    2.42E+OO    7.84E+OO u WG        MW-21      382797007 101612015      Mn-54    . 2.14E+OO    1.53E+OO    5.27E+OO u WG        MW-21      382797007 101612015      Nb-95      2.94E+OO    1.62E+OO    5.49E+OO u WG        MW-21      382797007 101612015     Ru-103      -9.69E-01   1.60E+OO    5.05E+OO u WG        MW-21      382797007 101612015     Ru-106      1.69E+Ol    1.48E+Ol    4.95E+Ol u WG        MW-21      382797007 10/6/2015     Sb-124      2.60E+OO    3.51E+OO    1.25E+Ol u WG        MW-21      382797007 10/6/2015     Sb-125     -1.02E+OO    3.81E+OO    1.25E+Ol u WG        MW-21      382797007 10/6/2015      Se-75      2.35E+OO    2.08E+OO    6.82E+OO u WG        MW-21      382797007 10/6/2015     Th-228      2.84E+OO    2.88E+OO    9.32E+OO u WG        MW-21      382797007 10/6/2015      Zn-65     -1.06E+OO    3.56E+OO    9.37E+OO u WG        MW-21      382797007 10/6/2015      Zr-95       6.41E-01   2.41E+OO    8.17E+OO u WG        SG-1       382797008 101512015     Ac-228      -4.49E-01   5.68E+OO    1.85E+Ol u WG        SG-1       382797008 10/5/2015   Ag-108m        9.77E-01   1.21E+OO    3.98E+OO u WG        SG-1       382797008 10/5/2015   Ag-llOm        6.27E-01   l.30E+OO    4.38E+OO u WG        SG-1       382797008 10/5/2015    ALPHA        1.52E+OO    1.19E+OO    3.60E+OO u WG        SG-1       382797008 10/5/2015     Ba-140     -4.58E+OO    6.lOE+OO    1.93E+Ol u WG        SG-1       382797008 10/5/2015      Be-7       1.0lE+Ol    l.IOE+Ol    3.62E+Ol u WG        SG-1       382797008 10/5/2015      BETA       4.65E+OO    8.00E-01    2.02E+OO WG        SG-1       382797008 10/5/2015     Ce-141      1.66E+OO    2.60E+OO    7.96E+OO u WG        SG-1       382797008 10/5/2015     Ce-144     -1.29E+Ol    9.39E+OO    2.69E+Ol u WG        SG-1       382797008 10/5/2015      Co-57      -3.95E-01   1.09E+OO    3.42E+OO u WG        SG-1       382797008 10/5/2015      Co-58      1.41E+OO    1.26E+OO    4.30E+OO u WG        SG-1       382797008 10/5/2015      Co-60      -7.20E-02   1.29E+OO    4.21E+OO u WG        SG-1       382797008 10/5/2015      Cr-51      6.46E+OO    1.25E+Ol    4.15E+Ol u WG        SG-1       382797008 10/5/2015     Cs-134     -l.19E+OO    1.45E+OO    4.38E+OO u WG        SG-1       382797008 10/5/2015     Cs-137       5.98E-02   l.39E+OO    4.62E+OO u WG        SG-1       382797008 10!5i2015      Fe-59      -l.50E-01   2.29E+OO    7.60E+OO u D-141

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE       NUCLIDE         (pCi/L)    (pCi/L)    (pCi/L)
WG         SG-1      382797008 10/5/2015       H-3     -1.75E+02     4.03E+02    l.35E+03 u WG         SG-1      382797008 10/5/2015      I-131    -1.74E+OO     2.59E+OO    8.08E+OO u WG         SG-1      382797008 10/5/2015      K-40     -8.24E+OO     l.69E+Ol    5.64E+Ol u WG         SG-1      382797008 10/5/2015     La-140     8.09E-Ol     2.0lE+OO    6.75E+OO u WG         SG-1      382797008 10/5/2015     Mn-54      9.55E-01     l.27E+OO    4.29E+OO u WG         SG-1      382797008 10/5/2015     Nb-95      5.38E-Ol     l.28E+OO    4.29E+OO u WG         SG-1      382797008 10/5/2015     Ru-103    -8.39E-01     l.32E+OO    4.26E+OO u WG         SG-1      382797008 10/5/2015     Ru-106    -3.45E+OO     1.15E+Ol    3.75E+Ol u WG         SG-1      382797008 10/5/2015     Sb-124    -2.73E+OO     2.59E+OO    7.26E+OO u WG         SG-1      382797008 10/5/2015     Sb-125     2.94E+OO     3.35E+OO    1.llE+Ol u WG         SG-1      382797008 10/5/2015      Se-75     2.34E+OO     l.89E+OO    5.93E+OO u WG         SG-1      382797008 10/5/2015     Th-228     3.87E-01     3.15E+OO    8.70E+OO u WG         SG-1      382797008 10/5/2015     Zn-65     -4.58E+OO     3.22E+OO    7.06E+OO u WG         SG-1      382797008 10/5/2015      Zr-95     4.06E-Ol   - 2.40E+OO    7.94E+OO u WG         SG-2      382797009 10/5/2015     Ac-228    -3.70E+OO     4.64E+OO    l.43E+Ol u WG         SG-2      382797009 10/5/2015    Ag-108m     4.78E-01     l.29E+OO    4.19E+OO u.
WG         SG-2      382797009 10/5/2015    Ag-llOm     6.97E-02     l.42E+OO    4.09E+OO u WG         SG-2      382797009 10/5/2015    ALPHA      -1.03E+OO     7.39E-01    2.49E+OO u WG         SG-2      382797009 10/5/2015     Ba-140    -l.43E+Ol     7.24E+OO    l.85E+Ol u WG         SG-2      382797009 10/5/2015      Be-7     -1.27E+Ol     1.18E+Ol    3.62E+Ol u WG         SG-2      382797009 10/5/2015     BETA       3.47E+OO     8.25E-01    2.33E+OO M WG         SG-2      382797009 10/5/2015 /   Ce-141     3.23E+OO     2.81E+OO    8.02E+OO u WG         SG-2      382797009 10/5/2015     Ce-144      l.25E-01    8.81E+OO    3.00E+Ol u WG         SG-2      382797009 10/5/2015     Co-57     -8.81E-01     1.23E+OO    3.75E+OO u WG         SG-2      382797009 10/5/2015     Co-58     -5.36E-01     1.21E+OO    3.64E+OO u WG         SG-2      382797009 10/5/2015     Co-60     -8.69E-01     1.09E+OO    3.16E+OO u WG         SG-2      382797009 10/5/2015      Cr-51    -1.82E+Ol     l.40E+Ol    4.06E+Ol u WG         SG-2      382797009 10/5/2015     Cs-134     l.65E+OO     l.40E+OO    4.70E+OO u WG         SG-2      382797009 10/5/2015     Cs-137     l.93E+OO     l.80E+OO    5.59E+OO u WG         SG-2      382797009 10/5/2015      Fe-59     5.46E+OO     3.16E+OO    9.98E+OO u WG         SG-2      382797009 10/5/2015       H-3     -2.07E+02     3.89E+02    l.31E+03 u WG         SG-2      382797009 10/5/2015      1-131    -4.88E-01     2.12E+OO    6.74E+OO u WG         SG-2      382797009 10/5/2015      K-40      l.26E+OO     1.58E+Ol
* 5.19E+Ol u WG         SG-2      382797009 10/5/2015     La-140     3.54E+OO     l.78E+OO    6.63E+OO u WG         SG-2      382797009 10/5/2015     Mn-54     -l.82E+OO     l.35E+OO    3.68E+OO u WG         SG-2      382797009 10/5/2015     Nb-95     -3.0lE-01     l.35E+OO    3.70E+OO u WG         SG-2      382797009 10/5/2015     Ru-103    -1.19E+OO     l.30E+OO    4.04E+OO u WG         SG-2      382797009 10/5/2015     Ru-106     1.17E+Ol     1.19E+Ol    4.07E+Ol u WG         SG-2      382797009 10/5/2015     Sb-124     4.0lE-01     2.56E+OO    8.73E+OO u WG         SG-2      382797009 10/5/2015     Sb-125     4.03E+OO     3.49E+OO    l.16E+Ol u WG         SG-2      382797009 10/5/2015      Se-75    -5.26E-01     2.27E+OO    6.47E+OO u WG         SG-2      382797009 10/5/2015     Th-228     6.12E+OO     4.06E+OO    9.76E+OO u WG         SG-2      382797009 10/5/2015     Zn-65     -9.60E-01     3.08E+OO    8.45E+OO u WG         SG-2      382797009 10/5/2015      Zr-95     2.60E+OO     2.73E+OO    7.78E+OO u WG         SG-4      382797010 10/5/2015     Ac-228     4.32E+OO     5.56E+OO    l.81E+Ol u WG         SG-4      382797010 10/5/2015    Ag-108m     6.46E-01     l.34E+OO    4.40E+OO u WG         SG-4      382797010 10/5/2015    Ag-llOm    -4.30E-01     l.33E+OO    4.30E+OO u WG         SG-4      382797010 10/5/2015    ALPHA       2.06E+OO     9.55E-01    2.63E+OO u WG         SG-4      382797010 10/5/2015     Ba-140     7.96E+OO     7.58E+OO    2.61E+Ol u WG         SG-4      382797010 10/5/2015     ,Be-7      2.21E+Ol     1.34E+Ol    4.57E+Ol u D-142

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN       DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         SG-4      382797010  10/5/2015   BETA         3.13E+OO    5.35E-01    1.22E+OO M WG         SG-4      382797010  10/5/2015   Ce-141       2.54E+OO    2.79E+OO    8.llE+OO u WG         SG-4      3827970,10 10/5/2015   Ce-144       9.46E+OO    l.07E+Ol    3.49E+Ol u WG         SG-4      382797010  10/5/2015    Co-57        l.79E-01   l.21E+OO    4.lOE+OO u WG         SG-4      382797010  10/5/2015    Co-58      -l.81E+OO    l.43E+OO    3.97E+OO u WG         SG-4      382797010  10/5/2015    Co-60      -4.92E-01    l.34E+OO    4.27E+OO u WG         SG-4      382797010  10/5/2015    Cr-51       l.32E+OO    l.40E+Ol    4.58E+Ol u WG         SG-4      382797010  10/5/2015   Cs-134       3.61E+OO    l.78E+OO    5.97E+OO u WG         SG-4      382797010  10/5/2015   Cs-137      -l.08E-02    l.51E+OO    5.00E+OO u WG         SG-4      382797010  10/5/2015    Fe-59      -3.99E+OO    3.98E+OO    9.93E+OO u WG         SG-4      382797010  10/5/2015     H-3       -2.90E+02    4.09E+02    l.39E+03 u WG         SG-4      382797010  10/5/2015    1-131       l.30E+OO    2.46E+OO    8.13E+OO u WG         SG-4      382797010  10/5/2015    K-40       -l.72E+Ol    l.82E+Ol    5.90E+Ol u WG         SG-4      382797010  10/5/2015   La-140       l.06E+OO    2.62E+OO    8.91E+OO u WG         SG-4      382797010  10/5/2015   Mn-54       -4.0lE+OO    l.69E+OO    3.39E+OO u WG         SG-4      382797010  10/5/2015   Nb-95       -2.27E-01    l.45E+OO    4.70E+OO u WG         SG-4      382797010  10/5/2015   Ru-103      -4.72E-02    l.49E+OO    4.36E+OO u WG         SG-4      382797010  10/5/2015   Ru-106       l.83E+Ol    l.27E+Ol    4.36E+Ol u WG         SG-4      382797010  10/5/2015   Sb-124      -2.88E+OO    2.82E+OO    7.35E+OO u WG         SG-4      382797010  10/5/2015   Sb-125       2.25E+OO    3.96E+OO    l.30E+Ol u WG         SG-4      382797010  10/5/2015    Se-75       2.50E+OO    2.0lE+OO    6.66E+OO u WG         SG-4      382797010  10/5/2015   Th-228      -l.59E+OO    3.21E+OO    l.OlE+Ol u WG         SG-4      382797010  10/5/2015    Zn-65      -l.98E-01    3.0lE+OO    8.65E+OO u WG         SG-4      382797010  10/5/2015    Zr-95       3.08E+OO    2.75E+OO    9.43E+OO u WG         SG-5      382797011  10/5/2015   Ac-228      -2.69E+OO    5.56E+OO    l.83E+Ol u WG         SG-5      382797011  10/5/2015  Ag-108m       3.36E+OO    l.39E+OO    3.44E+OO u WG         SG-5      382797011  10/5/2015  Ag-llOm      -2.07E+OO    l.31E+OO    3.58E+OO u WG         SG-5      382797011  10/5/2015   ALPHA        4.48E-01    1.04E+OO    3.32E+OO u WG         SG-5      382797011  10/5/2015   Ba-140       8.llE+OO    5.82E+OO    l.89E+Ol u WG         SG-5      382797011  10/5/2015    Be-7        4.26E+OO    l.04E+Ol    3.46E+Ol u WG         SG-5      382797011  10/5/2015   BETA         8.21E+OO    9.71E-01    l.75E+OO WG         SG-5      382797011  10/5/2015   Ce-141       5.55E+OO    3.52E+OO    7.22E+OO u WG         SG-5      382797011  10/5/2015   Ce-144      -2.96E+OO    8.84E+OO    2.82E+Ol u WG         SG-5      382797011  10/5/2015    Co-57      -7.57E-01    1.15E+OO    3.61E+OO u WG         SG-5      382797011  10/5/2015    Co-58        5.71E-01   l.20E+OO    3.68E+OO u WG         SG-5      382797011  10/5/2015    Co-60       l.74E+OO    l.33E+OO    4.82E+OO u WG         SG-5      382797011  10/5/2015    Cr-51      -9.52E+OO    1.17E+Ol    3.67E+Ol u WG         SG-5      382797011  10/5/2015   Cs-134        4.93E-01   l.45E+OO    4.91E+OO u WG         SG-5      382797011  10/5/2015   Cs-137        l.74E-01   l.45E+OO    4.68E+OO u WG         SG-5      382797011  10/5/2015    Fe-59      -3.07Ef00    2.92E+OO    8.19E+OO u WG         SG-5      382797011  10/5/2015     H-3       -3.01E+02    3.95E+02    l.34E+03 u WG         SG-5      382797011  10/5/2015    1-131      -l.80E+OO    2.25E+OO    6.98E+OO u WG         SG-5      382797011  10/5/2015    K-40       -9.54E+OO    l.75E+Ol    6.20E+Ol u WG         SG-5      382797011  10/5/2015   La-140       2.04E+OO    2.07E+OO    7.44E+OO u WG         SG-5      382797011  10/5/2015   Mn-54        l.57E+OO    l.26E+OO    4.39E+OO u WG         SG-5      382797011  10/5/2015    Nb-95       -2.68E-01   l.47E+OO    4.73E+OO u WG         SG-5      382797011  10/5/2015   Ru-103       7.94E-01    l.58E+OO    4.66E+OO u WG         SG-5      382797011  10/5/2015   Ru-106       l.OOE+Ol    l.23E+Ol    4.llE+Ol u WG         SG-5      382797011  10/5/2015   Sb-124       -8.27E-01   2.llE+OO    6.36E+OO u WG         SG-5      382797011  10/5/2015   Sb-125       l.05E+Ol    4.56E+OO    l.35E+Ol u D-143

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.      MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)    (pCi/L)   (pCi/L)
WG         SG-5      382797011 10/5/2015    Se-75       -7.37E-01    l.86E+OO   5.95E+OO  u WG         SG-5      382797011 10/5/2015   Th-228       -1.71E+OO    2.92E+OO   9.56E+OO  u WG         SG-5      382797011 10/5/2015   Zn-65        -4.22E+OO    3.58E+OO   8.56E+OO  u WG         SG-5      382797011 10/5/2015    Zr-95       -l.21E-Ol    2.45E+OO   8.14E+OO  u WG         W-2       382940001 1017/2015   Ac-228        5.83E+OO    6.45E+OO   9.25E+OO  u WG         W-2       382940001 1017/2015  Ag-108m     ' 5.61E-01     6.85E-01   2.23E+OO  u WG         W-2       382940001 1017/2015  Ag-llOm        6.42&#xa3;-01    6.76&#xa3;-01   2.28E+OO  u WG         W-2       382940001 1017/2015   Ba-140       -9.49&#xa3;+00    5.48E+OO   l.24E+Ol  u WG         W-2       382940001 1017/2015    Be-7         2.61E+OO    6.44E+OO   2.09E+Ol  u WG         W-2       382940001 1017/2015   Ce-141        3.34E+OO    l.81E+OO   5.07E+OO  u WG         W-2       382940001 1017/2015   Ce-144       -7.03&#xa3;+00    5.48E+OO   1.73E+Ol  u WG         W-2       382940001 1017/2015   Co-57        -5.61E-01    8.57&#xa3;-01   2.39E+OO  u WG         W-2       382940001 1017/2015   Co-58        -8.35&#xa3;-01    7.62&#xa3;-01   2.32E+OO  u WG         W-2       382940001 1017/2015   Co-60        -2.48&#xa3;-01    7.85&#xa3;-01   2.59&#xa3;+00  u WG         W-2       382940001 1017/2015    Cr-51        5.75&#xa3;+00    7.40E+OO   2.43E+Ol  u WG         W-2       382940001 1017/2015   Cs-134        6.30E-01    8.39&#xa3;-01   2.82E+OO  u WG         W-2       382940001 1017/2015   Cs-137       -1.85&#xa3;-01    7.20&#xa3;-01   2.38E+OO  u WG         W-2       382940001 1017/2015    Fe-59       -6.72&#xa3;-01    l.51E+OO   4.75E+OO  u WG         W-2       382940001 1017/2015     H-3         1.33&#xa3;+02    3.80&#xa3;+02   1.22&#xa3;+03  u WG         W-2       382940001 1017/2015    1-131       2.96E+OO     l.80E+OO   5.03&#xa3;+00  u WG         W-2       382940001 1017/2015    K-40        -2.86&#xa3;+01    l.33E+Ol   3.22E+Ol  u WG         W-2       382940001 1017/2015   La-140       -3.95E-01    l.39E+OO   4.51E+OO  u WG         W-2       382940001 1017/2015   Mn-54        -1.48E+OO    8.58&#xa3;-01   2.39&#xa3;+00  u WG         W-2       382940001 1017/2015   Nb-95         9.83&#xa3;-01    7.89&#xa3;-01   2.63&#xa3;+00  u WG         W-2       382940001 1017/2015   Ru-103       -4.26&#xa3;-01    8.29&#xa3;-01   2.59E+OO  U WG         W-2       382940001 1017/2015   Ru-106      -3.0lE+OO     8.52E+OO   2.14E+Ol  U WG         W-2       382940001 1017/2015   Sb-124        2. l lE-01  l.69E+OO   5.64E+OO  U WG         W-2       382940001 1017/2015   Sb-125       -3.49&#xa3;+00    2.71E+OO   6.64E+OO  U WG         W-2       382940001 1017/2015    Se-75       -3.32&#xa3;-01    l.06E+OO   3.45E+OO  U WG         W-2       382940001 1017/2015   Th-228        1.36&#xa3;-01    2.49E+OO   5.57E+OO  U WG         W-2       382940001 1017/2015   Zn-65         l.69E+OO    l.72E+OO   5.03E+OO  U WG         W-2       382940001 1017/2015    Zr-95       -6.74&#xa3;~01    l.68E+OO   4.33E+OO  U WG         W-7       382940002 1017/2015   Ac-228       2.79E+OO     5.22E+OO   l.12E+Ol  U WG         W-7       382940002 1017/2015  Ag-108m        3.46E-01    7.22E-01   2.45&#xa3;+00  u WG         W-7       382940002 1017/2015  Ag-1 lOm      -1.16&#xa3;+00    8.09E-01   2.38E+OO  U WG         W-7.      382940002 1017/2015   Ba-140       -4.97&#xa3;-01    3.90E+OO   l.29E+Ol  U WG         W-7       382940002 1017/2015    Be-7        3.95E+Ol     1.24E+Ol   2.16E+Ol  UI WG         W-7       382940002 1017/2015   Ce-141       2.06&#xa3;+00     1.66E+OO   4.88E+OO  U WG         W-7       382940002 1017/2015   Ce-144      -5.19E+OO     5.80E+OO*  1.77E+Ol  U WG         W-7       382940002 1017/2015   Co-57         5.93E-01    7.43&#xa3;-01   2.35E+OO  U WG         W-7       382940002 1017/2015   Co-58        -3.14&#xa3;-01    9.72&#xa3;-01   2.66E+OO  U WG         W-7       382940002 1017/2015   Co-60        -1.75&#xa3;-02    9.17&#xa3;-01   2.55E+OO  U WG         W-7       382940002 1017/2015    Cr-51      -8.31E+OO     8.26E+OO   2.56E+Ol  U WG         W-7       382940002 1017/2015   Cs-134       -2.35&#xa3;-01    8.70E-01   2.79&#xa3;+00  u WG         W-7       382940002 1017/2015   Cs-137        l.39E+OO    8.82&#xa3;-01   2.83E+OO  U WG         W-7       382940002 1017/2015    Fe-59       3.36E+OO     1.83E+OO   5.82E+OO  U WG         W-7      -382940002 1017/2015     H-3       -8.12E+Ol     3.75&#xa3;+02   1.25&#xa3;+03  u WG         W-7       382940002 1017/2015    I-131      -l.79E+OO     i.54E+OO   4.64E+oo* u WG         W-7       382940002 1017/2015    K-40         l.40E+OI    l.57E+Ol   2.43E+Ol  U WG         W-7       382940002 1017/2015   La-140        9.70&#xa3;-02    1.23&#xa3;+00   4.llE+OO  U D-144

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-7       382940002 1017/2015   Mn-54        4.32&#xa3;-01    9.20&#xa3;-01    2.60E+OO   u WG         W-7       382940002 1017/2015   Nb-95       -5.21&#xa3;-01    l.18E+OO    2.81E+OO   u WG         W-7       382940002 1017/2015   Ru-103      -l.15E+OO    8.53&#xa3;-01    2.61E+OO   u WG         W-7       382940002 1017/2015   Ru-106      -1.lOE+OO    6.71E+OO    2.20E+Ol   u WG         W-7       382940002 1017/2015   Sb-124       5.82E+OO    3.04E+OO    7.27E+OO   u WG         W-7       382940002 1017/2015   Sb-125      -l.51E+OO    2.15E+OO    7.05E+OO   u WG         W-7       382940002 1017/2015    Se-75       l.16E+OO    l.15E+OO    3.62E+OO   u WG         W-7       382940002 1017/2015   Th-228       l.72E+OO    2.47E+OO    5.35E+OO   u WG         W-7       382940002 1017/2015    Zn-65      -l.49E+OO    l.97E+OO    5.23E+OO   u WG         W-7       382940002 1017/2015    Zr-95       2.08E+OO    l.47E+OO    4.75E+OO   u WG         W-8       382940003 1017/2015   Ac-228       6.50E+OO    3.72E+OO    8.20E+OO   u WG         W-8       382940003 1017/2015  Ag-108m      -4.68&#xa3;-02    5.74&#xa3;-01    l.83E+OO   u WG         W-8       382940003 1017/2015  Ag-llOm      -2.0lE+OO    7.73&#xa3;-01    l.80E+OO   u WG         W-8       382940003 1017/2015   Ba-140       1.48E+OO    3.39E+OO    l.OOE+Ol   u WG         W-8       382940003 1017/2015    Be-7       -5.97E+OO    5.71E+OO    l.81E+OI   u WG         W-8       382940003 1017/2015   Ce-141      -l.80E+OO    l.53E+OO    3.85E+OO   u WG         W-8       382940003 1017/2015   Ce-144       5.41E+OO    4.38E+OO    l.45E+Ol   u WG         W-8       382940003 101712015   Co-57        5.85&#xa3;-01    5.96&#xa3;-01    l.88E+OO   u WG         W-8       382940003 1017/2015   Co-58        6.16&#xa3;-01    6.97E-01    l.72E+OO   u WG         W-8       382940003 1017/2015   Co-60       -3.46&#xa3;-01    6.12E-OI    l.93E+OO   u WG         W-8       382940003 1017/2015    Cr-51       7.82E+OO    6.26E+OO    2.0lE+OI   u WG         W-8       382940003 1017/2015   Cs-134       l.04E+OO    6.99E-OI    2.26E+OO   u WG         W-8       382940003 1017/2015   Cs-137      -5.74&#xa3;-01    9.39E-01    2.51E+OO   u WG         W-8       382940003 1017/2015    Fe-59       9.37E-01    1.18E+OO    3.99E+OO   u WG         W-8       382940003 1017/2015     H-3        l.30E+02    3.78E+02    1.22E+03   u WG         W-8       382940003 1017/2015    1-131      -8.85&#xa3;-01    l.35E+OO    3.69E+OO   u WG         W-8       382940003 101712015    K-40        2.08E+OI    8.68E+OO    2.63E+OI   u WG         W-8       382940003 1017/2015   La-140       1.26E+OO    1.12E+OO    3.71E+OO   u WG         W-8       382940003 1017/2015   Mn-54        5.57&#xa3;-01    6.82&#xa3;-01    l.96E+OO   u WG         W-8       382940003 101712015   Nb-95        3.55&#xa3;-01    5.97E-OI    l.98E+OO   u WG         W-8       382940003 1017/2015   Ru-103      -5.71&#xa3;-01    6.66&#xa3;-01    2.14E+OO   u WG         W-8       382940003 1017/2015   Ru-106       7.16E+OO    5.81E+OO    l.92E+OI   u WG         W-8       382940003 1017/2015   Sb-124      -8.69&#xa3;-01    1.44E+OO    4.62E+OO   u WG         W-8       382940003 101712015   Sb-125      -l.71E+OO    l.87E+OO    5.71E+OO   u WG         W-8       382940003 101712015    Se-75       1.30E+OO    l.30E+OO    2.78E+OO   u WG         W-8       382940003 1017/2015   Th-228       l.64E+OO    2.33E+OO    3.74E+OO   u WG         W-8       382940003 1017/2015    Zn-65       5.30E-01    1.21E+OO    3.57E+OO   u WG         W-8       382940003 1017/2015    Zr-95        l.82E-01   1.09E+OO    3.60E+OO   u WG         W-9       382940004 1017/2015   Ac-228      -2.29E+OO    3.63E+OO    l.03E+OI   u WG         W-9       382940004 I0/7/2015  Ag-108m      -l.56E-OI    6.08E-01    l.96E+OO   u WG         W-9       382940004 1017/2015  Ag-llOm      -6.45E-01    7.07E-OI    2.lOE+OO   u WG         W-9       382940004 1017/2015   Ba-140      -2.64E+OO    3.66E+OO    1.13E+OI   u WG         W-9       382940004 1017/2015    Be-7        7.38E-OI    5.71E+OO    l.86E+Ol   u WG         W-9       382940004 1017/2015   Ce-141       5.75E-01    1.24E+OO    3.. 83E+OO u WG         W-9       382940004 1017/2015   Ce-144       8.08E+OO    5.12E+OO    l.59E+Ol   u WG         W-9       382940004 1017/2015    Co-57       3.81&#xa3;-01    6.92E-01    2.02E+OO   u WG         W-9       382940004 1017/2015    Co-58       2.21&#xa3;-01,   7.09E-01    2.37E+OO   u WG         W-9       382940004 1017/2015    Co-60      -1.77&#xa3;-01    6.79E-OI    2.23E+OO   u WG         W-9       382940004 1017/2015    Cr-51       4.52E+OO    7.lOE+OO    2.37E+OI   u WG         W-9       382940004 101712015   Cs-134       1:56E+OO    8.08E-OI    2.61E+OO   u D-145

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L)
WG         W-9       382940004 1017/2015   Cs-137      -8.0IE-01    7.08E-Ol    2.19E+OO u WG         W-9       382940004 1017/2015    Fe-59       3.49E-Ol    l.67E+OO    4.46E+OO u WG         W-9       382940004 1017/2015     H-3       -3.90E+02    3.62E+02    l.26E+03 u WG         W-9       382940004 1017/2015    1-131      -8.10E-02    l.27E+OO    4.17E+OO u WG         W-9       382940004 1017/2015    K-40        7.41E-Ol    l.12E+Ol    3.09E+Ol u WG         W-9       382940004 1017/2015   La-140       l.39E+OO    l.34E+OO    4.53E+OO u WG         W-9       382940004 1017/2015   Mn-54        4.26E-Ol    6.61E-Ol    2.22E+OO u WG         W-9       382940004 1017/2015   Nb-95        2.56E-Ol    6.30E-Ol    2.12E+OO u WG         W-9       382940004 1017/2015   Ru-103      -3.08E-Ol    7.88E-Ol    2.50E+OO u WG         W-9       382940004 1017/2015   Ru-106       9.71E-Ol    6.18E+OO    2.09E+Ol u WG         W-9       382940004 1017/2015   Sb-124       9.50E-Ol    l.61E+OO    5.47E+OO u WG         W-9       382940004 1017/2015   Sb-125       4.38E-Ol    l.86E+OO    6.lOE+OO u WG         W-9       382940004 1017/2015    Se-75       8.13E-Ol    9.29E-Ol    3.12E+OO u WG         W-9       382940004 1017/2015   Th-228       6.36E-Ol    2.lOE+OO    4.85E+OO u WG         W-9       382940004 1017/2015    Zn-65       l.07E+OO    l.62E+OO    4.69E+OO u WG         W-9       382940004 1017/2015    Zr-95       6.34E-Ol    l.16E+OO    3.93E+OO u WG         W-13      382940005 1017/2015   Ac-228       9.65E-Ol    3.08E+OO    6.00E+OO u WG         W-13      382940005 1017/2015  Ag-108m      -4.58E-Ol    6. l IE-01  l.67E+OO u WG         W-13      382940005 1017/2015  Ag-llOm      -1.16E+OO    7.14E-Ol    l.78E+OO u WG         W-13      382940005 1017/2015   Ba-140       5.66E+OO    3.40E+OO    9.68E+OO u WG         W-13      382940005 1017/2015    Be-7        7.98E+OO    5.64E+OO    l.81E+Ol u WG         W-13      382940005 1017/2015   Ce-141       9.32E-Ol    l.IOE+OO    3.53E+OO u WG         W-13      382940005 1017/2015   Ce-144        l.91E-Ol   4.16E+OO    l.34E+Ol u WG         W-13      382940005 1017/2015   Co-57       -8.98E-Ol    5.72E-Ol    l.67E+OO u WG         W-13      382940005 1017/2015   Co-58        9.07E-Ol
* 9.02E-Ol    l.68E+OO u WG         W-13      382940005 1017/2015   Co-60        1.26E+OO    6.80E-Ol    2.19E+OO u WG         W-13      382940005 1017/2015    Cr-51      -2.24E+OO    5.76E+OO    I.75E+Ol u WG         W-13      382940005 1017/2015   Cs-134      -9.85E-02    6.63E-Ol    2.08E+OO u WG         W-13      382940005 1017/2015   Cs-137      -9.93E-Ol    l.03E+OO    2.18E+OO u WG         W-13      382940005 1017/2015    Fe-59      -l.44E+OO    l.2IE+OO    3.55E+OO u WG         W-13      382940005 1017/2015     H-3       -8.02E+02    3.37E+02    l.27E+03 u WG         W-13      382940005 1017/2015    1-131      -l.22E+OO    l.26E+OO    3.44E+OO u WG         W-13      382940005 1017/2015    K-40       -4.96E+OO    9.24E+OO    2.56E+Ol u WG         W-13      382940005 1017/2015   La-140      -4.34E-Ol    8.86E-Ol    2.84E+OO u WG         W-13      382940005 1017/2015   Mn-54       -2.0IE-01    5.74E-Ol    l.88E+OO u WG         W-13      382940005 1017/2015   Nb-95        2.35E-Ol    5.68E-Ol    l.92E+OO u WG         W-13      382940005 1017/2015   Ru-103      -5.26E-Ol    6.77E-Ol    l.82E+OO u WG         W-13      382940005 1017/2015   Ru-106       l.84E+OO    5.09E+OO    l.65E+Ol u WG         W-13      382940005 1017/2015   Sb-124       6.18E-Ol    l.26E+OO    4.27E+OO u WG         W-13      382940005 1017/2015   Sb-125      -5.98E-Ol    l.60E+OO    5.16E+OO u WG         W-13      382940005 1017/2015    Se-75      -6.34E-Ol    8.13E-Ol    2.65E+OO u WG         W-13      382940005 1017/2015   Th-228       2.15E+OO    l.64E+OO    3.36E+OO u WG         W-13      382940005 1017/2015    Zn-65      -5.25E-Ol    l.40E+OO    3.83E+OO u WG         W-13      382940005 1017/2015    Zr-95       5.l IE-01   l.39E+OO    3.47E+OO u WG         W-14      382940006 1017/2015   Ac-228       7.llE+OO    3.45E+OO    7.49E+OO u WG         W-14      382940006 1017/2015  Ag-108m      -2.13E-Ol    6.22E-Ol    l.96E+OO u WG         W-14      382940006 1017/2015  Ag-llOm      -7.05E-Ol    6.40E-Ol    l.96E+OO u WG         W-14      382940006 1017/2015   Ba-140      -3.29E+OO    3.24E+OO    l.02E+Ol u WG         W-14      382940006 1017/2015    Be-7        3.46E+OO    5.78E+OO    l.96E+Ol u WG         W-14      382940006 1017/2015   Ce-141      -8.30E-Ol    l.37E+OO    4.35E+OO u D-146

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.        MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)     (pCi/L)
WG         W-14      382940006 101712015   Ce-144      -2.32E-Ol    5.43E+OO     l.61E+Ol u WG         W-14      382940006 101712015   Co-57        8.31E-Ol    6.72E-Ol     2.21E+OO u WG         W-14      382940006 101712015   Co-58        3.02E-Ol    7.56E-Ol     2.18E+OO u WG         W-14      382940006 101712015   Co-60        3.79E-Ol    6.SIE-01     2.31E+OO u WG         W-14      382940006 101712015    Cr-51       1.4IE+Ol    7.25E+OO     2.26E+Ol u WG         W-14      382940006 101712015   Cs-134      -2.0SE-01    6.77E-Ol     2.19E+OO u WG         W-14      382940006 101712015   Cs-137       3.45E-Ol    6.68E-Ol     2.24E+OO u WG         W-14      382940006 101712015    Fe-59      -2.26E-Ol    l.31E+OO     4.36E+OO u WG         W-14      382940006 101712015     H-3        5.36E+Ol    3.82E+02     l.25E+03 u WG         W-14      382940006 101712015    1-131       5.33E-Ol    l.29E+OO     4.20E+OO u WG         W-14      382940006 101712015    K-40        l.49E+Ol    l.28E+Ol     l.99E+Ol U WG         W-14      382940006 101712015   La-140       l.64E+OO    l.50E+OO     4.42E+OO U WG         W-14      382940006 101712015   Mn-54        5.39E-Ol    6.44E-Ol     2.14E+OO U WG         W-14      382940006 101712015   Nb-95        6.05E-Ol    7.38E-Ol     2.45E+OO U WG         W-14      382940006 101712015   Ru-103      -6.53E-Ol    7.31E-Ol     2.34E+OO U WG         W-14      382940006 101712015   Ru-106       3.03E+OO    5.71E+OO     l.92E+Ol U WG         W-14      382940006 10/7/2015   Sb-124       7.70E-Ol    l.58E+OO     5.28E+OO U WG         W-14      382940006 101712015   Sb-125      -2.lOE+OO    l.94E+OO     5.81E+OO U WG         W-14      382940006 101712015    Se-75      -1.19E+OO    l.13E+OO     3.03E+OO U WG         W-14      382940006 101712015   Th-228       3.35E+OO    2.20E+OO     4.87E+OO u WG         W-14      382940006 101712015   Zn-65       -l.93E+OO    l.49E+OO     4.47E+OO u WG         W-14      382940006 101712015    Zr-95       3.lSE-01    l.13E+OO     3.74E+OO u WG         W-15      382940007 101712015   Ac-228      -l.02E+OO    3.34E+OO     9.67E+OO u WG         W-15      382940007 101712015  Ag-108m      -6.88E-02    5.34E-Ol     l.74E+OO U WG         W-15      382940007 101712015  Ag-llOm      -4.71E-02    6.16E-01     l.80E+OO U WG         W-15      382940007 101712015   Ba-140       2.55E+OO    3.1 IE+OO    l.02E+Ol U WG         W-15      382940007 101712015    Be-7         l.58E-01   5.37E+OO     l.75E+Ol U WG         W-15      382940007 101712015   Ce-141       3.42E-01    1.33E+OO     3.85E+OO U WG         W-15      382940007 101712015   Ce-144      -8.07E+OO    4.66E+OO     l.33E+Ol U WG         W-15      382940007 101712015   Co-57       -l.15E+OO    6.lSE-01     l.73E+OO U WG         W-15      382940007 101712015   Co-58        2.57E-01    6.0IE-01     2.02E+OO U WG         W-15      382940007 101712015   Co-60        l.41E+OO    7.33E-01     2.42E+OO u*
WG         W-15      382940007 101712015    Cr-51      -2.85E+OO    6.07E+OO     l.99E+Ol U WG         W-15      382940007 101712015   Cs-134        L44E-Ol    6.62E-01     2.22E+OO U WG         W-15      382940007 101712015   Cs-137       3.53E-01    9.25E-01   . 2.04E+OO U WG         W-15      382940007 101712015    Fe-59       l.22E+OO    l.56E+OO     4.53E+OO U WG         W-15      382940007 101712015     H-3       -2.61E+02    3.66E+02     l.25E+03 U WG         W-15      382940007 101712015    1-131      -7.37E-01    l.IOE+OO     3.52E+OO U WG         W-15      382940007 101712015    K-40       -1.42E+Ol    1.0IE+Ol     2.83E+Ol U WG         W-15      382940007 101712015   La-140       l.32E+OO    l.16E+OO     3.91E+OO U WG         W-15      382940007 101712015   Mn-54       -6.09E-01    5.73E-01     1.75E+OO U WG         W-15      382940007 101712015   Nb-95       -1.07E+OO    8.95E-01     2.lOE+OO U WG         W-15      382940007 101712015   Ru-103      -5.67E-01    7.66E-01     2.06E+OO u WG         W-15      382940007 101712015   Ru-106      -3.66E-01    5.87E+OO     l.87E+Ol u WG         W-15      382940007 101712015   Sb-124      -2.05E-01    l.43E+OO     4.63E+OO u WG         W-15      382940007 101712015   Sb-125      -3.51E+OO    l.93E+OO     5.38E+OO u WG         W-15      382940007 101712015    Se-75      -l.58E+OO    l.15E+OO     2.62E+OO u WG         W-15      382940007 101712015   Th-228       3.26E+OO    2.40E+OO     3.44E+OO u WG         W-15      382940007 101712015   Zn-65       -l.29E+OO    l.52E+OO     3.88E+OO u WG         W-15      382940007 101712015    Zr-95      -9.63E-01    l.08E+OO     3.39E+OO u D-147

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.      MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-4       383519001 10/14/2015   Ac-228      -3.43E+OO    6.25E+OO    1.97E+Ol  u WG         W-4       383519001 10/14/2015  Ag-108m       1.48E+OO    l.50E+OO    5.0SE+OO  u WG         W-4       383519001 10/14/2015  Ag-llOm       1.22E+OO    l.34E+OO    4.52E+OO  u WG         W-4       383519001 10/14/2015   Ba-140      -6.73E+OO    7.69E+OO    2.32E+Ol  u WG         W-4       383519001 10114/2015    Be-7       -1.03E+OO    1.22E+Ol    3.45E+Ol  u WG         W-4       383519001 10/14/2015   Ce-141       5.83E+OO    2.77E+OO    8.71E+OO  u WG         W-4       383519001 10/14/2015   Ce-144       1.13E+Ol    8.82E+OO    2.97E+Ol  u WG         W-4       383519001 10/14/2015   Co-57       -9.45E-01    1.19E+OO    3.59E+OO  u WG         W-4       383519001 10/14/2015   Co-58       -1.20E+OO    l.53E+OO    4.67E+OO  u WG         W-4       383519001 10/14/2015   Co-60       -6.17E-01    l.12E+OO    3.38E+OO  u WG         W-4       383519001 10/14/2015    Cr-51      -1.68E+OO    1.41E+Ol    4.51E+Ol  u WG         W-4       383519001 10/14/2015   Cs-134      -1.68E+OO    1.59E+OO    4.66E+OO  u WG         W-4       383519001 10/14/2015   Cs-137      -l.38E+OO    1.56E+OO    4.55E+OO  u WG         W-4       383519001 10/14/2015    Fe-59       4.47E+OO    2.89E+OO    1.0IE+Ol  u WG         W-4       383519001 10114/2015     H-3        2.67E+02    3.92E+02    1.24E+03  u WG         W-4       383519001 10/14/2015    I-131       6.18E-01    2.63E+OO    8.94E+OO  U WG         W-4       383519001 10/14/2015    K-40        2.87E+Ol    1.89E+Ol    6.63E+Ol. U WG         W-4       383519001 10114/2015   La-140       2.47E+OO    2.14E+OO    7.77E+OO  U WG         W-4       383519001 10/14/2015   Mn-54       -7.09E-02    1.41E+OO    4.65E+OO  U WG         W-4       383519001 10114/2015   Nb-95        1.51E+OO    1.48E+OO    5.08E+OO  U WG         W-4       383519001 10/14/2015   Ru-103      -1.47E+OO    1.90E+OO    5.19E+OO  U WG         W-4       383519001 10114/2015   Ru-106       6.17E+OO    1.45E+Ol    4.79E+Ol  U WG.        W-4       383519001 10114/2015   Sb-124      -4.87E+OO    4.15E+OO    1.15E+Ol  U WG         W-4       383519001 10/14/2015   Sb-125       4.40E-01    4.30E+OO    1.44E+Ol  U WG         W-4       383519001 10/14/2015    Se-75       6.54E-01    1.91E+OO    6.29E+OO  U WG         W-4       383519001 10/14/2015   Th-228       3.47E+OO    3.28E+OO    9.lOE+OO  U WG         W-4       383519001 10/14/2015    Zn-65      -5.40E+OO    3.81E+OO    9.97E+OO  U WG         W-4       383519001 10/14/2015    Zr-95       1.49E+OO    2.19E+OO    7.64E+OO  U WG         W-5       383519002 10/14/2015   Ac-228       1.0IE+Ol    5.llE+OO    l.31E+Ol  U WG         W-5       383519002 10/14/2015  Ag-108m       8.73E-02    l.13E+OO    3.64E+OO  U WG         W-5       383519002 10/14/2015  Ag-llOm      -7.24E-01    1.23E+OO    3.86E+OO  U
 *wG         W-5       383519002 10/14/2015   Ba-140       6.85E-01    6.86E+OO    2.31E+Ol  U WG         W-5       383519002 10/14/2015    Be-7       -9.82E+OO    1.IOE+Ol    3.42E+Ol  U WG         W-5       383519002 10/14/2015   Ce-141       1.74E+OO    4.24E+OO    7.94E+OO  U WG         W-5       383519002 10/14/2015   Ce-144       2.21E+Ol    1.03E+Ol    3.26E+Ol  U WG         W-5       383519002 10/14/2015    Co-57       2.56E-01    l.18E+OO    3.77E+OO  U WG         W-5       383519002 10114/2015    Co-58       2.78E-01    l.17E+OO    3.88E+OO  U WG         W-5       383519002 10114/2015    Co-60       1.72E+OO    1.46E+OO    5.llE+OO  U WG         W-5       383519002 10/14/2015    Cr-51      -9.00E+OO    1.20E+Ol    3.69E+Ol  U WG         W-5       383519002 10/14/2015   Cs-134      -1.0IE+OO    l.36E+OO    3.37E+OO  U WG         W-5       383519002 10/14/2015   Cs-137      -2.90E+OO    1.74E+OO    4.95E+OO  U WG         W-5       383519002 10/14/2015    Fe-59       -7.67E-01   2.41E+OO    7.79E+OO  U WG         W-5       383519002 10/14/2015     H-3        3.49E+02    3.94E+02    1.23E+03  U WG         W-5       383519002 10/14/2015    I-131       3.lOE+OO    2.44E+OO    8.08E+OO  U WG         W-5       383519002 10/14/2015    K-40        2.22E+Ol    l.52E+Ol    5.30E+Ol  U WG         W-5       383519002 10/14/2015   La-140       1.70E+OO    2.04E+OO    7.IOE+OO  U WG         W-5       383519002 10/14/2015   Mn-54        4.74E+OO    1.85E+OO    3.51E+OO  M  UI WG         W-5       383519002 10/14/2015   Nb-95        -1.05E-01   l.32E+OO    4.28E+OO  U WG         W-5       383519002 10/14/2015   Ru-103      -3.54E+OO    1.57E+OO    3.79E+OO  U WG         W-5       383519002 10114/2015   Ru-106      -1.81E+Ol    1.25E+Ol    3.48E+Ol  U D-148

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN        DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L)
WG         W-5       383519002   10/14/2015   Sb-124      -1.02E+OO    2.37E+OO    7.41E+OO  u WG         W-5       383519002   10/14/2015   Sb-125       l.OlE+OO    3.76E+OO    l.22E+Ol  u WG         W-5       383519002   10/14/2015    Se-75       5.92E-01    l.93E+OO    6.43E+OO  u WG         W-5       383519002   10/14/2015   Th-228       1.46E+OO    3.12E+OO    9.91E+OO  u WG         W-5       383519002   10114/2015   Zn-65       -2.32E+OO    2.72E+OO    8.21E+OO  u WG         W-5       383519002   10/14/2015    Zr-95       l.70E+OO    2.lOE+OO    7.20E+OO  u WG         W-6       383519003   10/14/2015   Ac-228       3.97E+OO    6.49E+OO    2.18E+Ol  u WG         W-6       383519003   10/14/2015  Ag-108m      -5.44E-01    l.37E+OO    4.33E+OO  u WG         W-6       383519003   10/14/2015  Ag-llOm      -l.70E+OO    1.28E+OO    3.59E+OO. u WG         W-6       383519003   10/14/2015   Ba-140       9.78E+OO    7.48E+OO    2.53E+Ol  u WG         W-6       383519003   10/14/2015    Be-7        4.65E+OO    l.38E+Ol    4.45E+Ol  u WG        W-6        383519003   10/14/2015   Ce-141      -5.26E+OO    3.64E+OO    9.57E+OO  u WG         W-6       383519003   10/14/2015   Ce-144       6.0lE+OO    l.llE+Ol    3.62E+Ol  u WG        W-6        383519003   10/14/2015   Co-57        5.46E-01    l.35E+OO    4.42E+OO  u WG        W-6        383519003   10/14/2015   Co-58       -2.40E+OO    l.52E+OO    3.94E+OO  u WG        W-6        383519003   10/14/2015   Co-60       -l.53E+OO    l.90E+OO    4.67E+OO  u WG         W-6       383519003   10/14/2015    Cr-51      -6.48E+OO    l.18E+Ol    3.74E+Ol  u WG         W-6       383519003   10/14/2015   Cs-134      -2.87E-01    l.50E+OO    4.87E+OO  u WG         W-6       383519003   10/14/2015   Cs-137       2.63E+OO    l.56E+OO    5.42E+OO  u WG         W-6       383519003   10/14/2015    Fe-59      -6.81E+OO    3.37E+OO    6.78E+OO  u WG         W-6       383519003   10/14/2015     H-3        l.73E+02    3.84E+02    1.23E+03  u WG         W-6       383519003   10/14/2015    1-131      -2.50E+OO    2.66E+OO    8.05E+OO  u WG         W-6       383519003   10/14/2015    K-40        l.48E+Ol    2.0lE+Ol    7.57E+Ol  U WG        W-6        383519003   10/14/2015   La-140       6.14E-Ol    2.00E+OO    6.88E+OO  U WG        W-6        383519003   10/14/2015   Mn-54        7.40E-01    1.48E+OO    5.06E+OO  U WG        W-6        383519003   10/14/2015   Nb-95        1.70E-Ol    1.69E+OO    4.93E+OO  U WG        W-6        383519003   10/14/2015   Ru-103      -2.0lE+OO    1.68E+OO    4.74E+OO  U WG        W-6        383519003   10/14/2015   Ru-106       2.05E+OO    l.21E+Ol    4.12E+Ol  U 1
WG        W-6        383519003 . 10/14/2015   Sb-124       4.29E-Ol    3.33E+OO    l.llE+Ol  U WG         W-6       383519003   10114/2015   Sb-125       7.72E+OO    3.64E+OO    1.29E+Ol  U WG         W-6       383519003   10/14/2015    Se-75      -1.06E-Ol    l.88E+OO    6.30E+OO  U WG         W-6       383519003   10/14/2015   Th-228      -4.65E+OO    3.23E+OO    9.44E+OO  U WG         W-6       383519003   10/14/2015   Zn-65        3.13E+OO    3.37E+OO    l.05E+Ol  U WG         W-6       383519003   10/14/2015    Zr-95      -9.86E+OO    3.76E+OO    6.40E+OO  U D-149

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L) ws         SWL-2     372275001  4/30/2015   Ac-228       5.90E+OO    5.83E+OO    7.lOE+OO u ws         SWL-2     372275001  4/30/2015  Ag-108m      -3.42E-Ol    5.44E-Ol    l.78E+OO u ws         SWL-2     372275001  4/30/2015  Ag-1 lOm     -6.SOE-02    6.04E-Ol    l.96E+OO u ws         SWL-2     372275001  4/30/2015   Ba-140      -4.38E+OO    6.75E+OO    2.16E+Ol u ws         SWL-2     372275001  4/30/2015    Be-7       -3.35E+OO    6.54E+OO    2.13E+Ol u ws         SWL-2     372275001  4/30/2015   Ce-141       4.34E+OO    2.63E+OO    4.74E+OO u ws         SWL-2     372275001  4/30/2015   Ce-144       3.15E+OO    4.49E+OO    l.47E+Ol u ws         SWL-2     372275001  4/30/2015   Co-57        6.29E-Ol    6.09E-Ol    l.95E+OO u ws         SWL-2     372275001  4/30/2015   Co-58        4.92E-Ol    7.12E-Ol    2.41E+OO u ws         SWL-2     372275001  4/30/2015   Co-60        7.02E-Ol    6.34E-Ol    2.16E+OO u ws         SWL-2     372275001  4/30/2015    Cr-51       5.09E+OO    1.31E+Ol    2.69E+Ol u ws         SWL-2     372275001  4/30/2015   Cs-134       7.40E-Ol    6.77E-Ol    2.28E+OO u ws         SWL-2     372275001  4/30/2015   Cs-137       4.47E-Ol    6.51E-Ol    2.14E+OO u ws         SWL-2     372275001  4/30/2015    Fe-59       4.54E-Ol    l.54E+OO    5.09E+OO u ws         SWL-2     372275001  4/30/2015    I-131      -6.62E+OO    6.20E+OO    l.28E+Ol u ws         SWL-2     372275001  4/30/2015    K-40       -l.44E+Ol    l.23E+Ol    2.70E+Ol u ws         SWL-2     372275001  4/30/2015   La-140      -8. 19E-Ol   2.27E+OO    7.34E+OO u ws         SWL-2     372275001  4/30/2015   Mn-54       -8.54E-Ol    7.43E-Ol    l.95E+OO u ws         SWL-2     372275001  4/30/2015   Nb-95        l.06E+OO    7.83E-Ol    2.51E+OO u ws         SWL-2     372275001  4/30/2015   Ru-103      -7.94E-Ol    8.81E-Ol    2.79E+OO u ws         SWL-2     372275001  4/30/2015   Ru-106      -6.33E-Ol    5.64E+OO    l.84E+Ol u ws         SWL-2     372275001  4/30/2015   Sb-124      -2.45E+OO    l.86E+OO    5.38E+OO u ws         SWL-2     372275001  4/30/2015   Sb-125      -2.36E+OO    l.74E+OO    5.35E+OO u ws         SWL-2     372275001  4/30/2015    Se-75      -l.26E+OO    9.81E-Ol    2.97E+OO u ws         SWL-2     372275001  4/30/2015   Th-228      -l.36E+OO    2.04E+OO    5.05E+OO u ws         SWL-2     372275001  4/30/2015   Zn-65       -2.43E+OO    l.57E+OO    4.49E+OO u ws         SWL-2     372275001  4/30/2015    Zr-95       l.82E+OO    l.32E+OO    4.23E+OO u ws         SWL-3     372275002  4/30/2015   Ac-228       l.35E+Ol    5.58E+OO    8.17E+OO UI ws         SWL-3     372275002  4/30/2015  Ag-108m      -1.33E-Ol    4.76E-Ol    l.54E+OO u ws         SWL-3     3722750.02 4/30/2015  Ag-llOm      -l.09E+OO    6.26E-Ol    l.52E+OO u ws         SWL-3     372275002  4/30/2015   Ba-140       3.31E+OO    5.56E+OO    l.81E+Ol u ws         SWL-3     372275002  4/30/2015    Be-7       -2.95E+OO    5.41E+OO    l.71E+Ol u ws         SWL-3     372275002  4/30/2015   Ce-141      -3.71E+OO    2.36E+OO    4.25E+OO u ws         SWL-3     372275002  4/30/2015   Ce-144      -4.47E-Ol    3.69E+OO    l.19E+Ol u ws         SWL-3     372275002  4/30/2015   Co-57       -2.S4E-02    4.92E-Ol    l.59E+OO U ws         SWL-3     372275002  4/30/2015   Co-58        4.50E-Ol    5.83E-Ol    l.85E+OO U ws         SWL-3     372275002  4/30/2015   Co-60       -l.69E-Ol    6.42E-Ol    l.81E+OO U ws         SWL-3     372275002  4/30/2015    Cr-51      -9.93E+OO    7.51E+OO    2.30E+Ol U ws         SWL-3     372275002  4/30/2015   Cs-134       l.05E+OO    7.67E-Ol    l.65E+OO U ws         SWL-3     372275002  4/30/2015   Cs-137       6.35E-Ol    5.81E-Ol    l.68E+OO U ws         SWL-3     372275002  4/30/2015    Fe-59      -2.40E+OO    l.58E+OO    3.62E+OO U ws         SWL-3     372275002  4/30/2015    I-131       2.02E-Ol    3.34E+OO    l.IOE+Ol U ws         SWL-3     372275002  4/30/2015    K-40       -4.82E+OO    9.77E+OO    2.41E+Ol U ws         SWL-3     372275002  4/30/2015   La-140       3.33E+OO    4.48E+OO    6.22E+OO U ws         SWL-3     372275002  4/30/2015   Mn-54        8.67E-Ol    5.58E-Ol    l.82E+OO U ws         SWL-3     372275002  4/30/2015   Nb-95        I.29E+OO    6.68E-Ol    2.12E+OO U ws         SWL-3     372275002  4/30/2015   Ru-103      -4.70E-Ol    8.60E-Ol    2.36E+OO U ws         SWL-3     372275002  4/30/2015   Ru-106      -l.05E+OO    4.41E+OO    l.47E+Ol U ws         SWL-3     372275002  4/30/2015   Sb-124       2.83E+OO    l.87E+OO    5.53E+OO U ws         SWL-3     372275002  4/30/2015   Sb-125      -2.17E+OO    l.51E+OO    4.45E+OO U D-150

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L) ws         SWL-3     372275002 4/30/2015     Se-75       4.06E-02    7.33E-01    2.47E+OO u ws         SWL-3     372275002 4/30/2015    Th-228       2.70E+OO    l.63E+OO    3.IOE+OO u ws         SWL-3     372275002 4/30/2015    Zn-65       -6.47E-02    l.25E+OO    3.47E+OO u ws         SWL-3     372275002 4/30/2015     Zr-95       6.62E-01    l.08E+OO    3.63E+OO u ws         SWL-2     374177001 5/31/2015    Ac-228       l.02E+Ol    8.62E+OO    l.97E+Ol u ws         SWL-2     374177001 5/31/2015   Ag-108m      -2.68E+OO    l.44E+OO    3.56E+OO u ws         SWL-2     374177001 5/31/2015   Ag-llOm      -3.08E+OO    l.74E+OO    3.77E+OO u ws         SWL-2     374177001 5/31/2015    Ba-140       l.77E+Ol    1.52E+Ol    4.67E+Ol u ws         SWL-2     374177001 5/31/2015     Be-7       -l.24E+Ol    l.58E+Ol    4.03E+Ol u ws         SWL-2     374177001 5/31/2015    Ce-141      -5.98E-01    3.37E+OO    9.39E+OO u ws         SWL-2     374177001 5/31/2015    Ce-144      -7.06E-02    8.47E+OO    2.70E+Ol u ws         SWL-2. 374177001 5/31/2015    Co-57       -9.70E-02    1.12E+OO    3.56E+OO u ws         SWL-2     374177001 5/31/2015    Co-58        2.50E+OO    l.58E+OO    4.41E+OO u ws         SWL-2     374177001 5/31/2015    Co-60       -7.37E-01    l.06E+OO    3.13E+OO u ws         SWL-2     374177001 5/31/2015     Cr-51       l.69E+Ol    l.74E+Ol    5.79E+Ol u ws         SWL-2     374177001 5/31/2015    Cs-134      -l.67E+OO    l.47E+OO    4.23E+OO u ws         SWL-2     374177001 5/31/2015    Cs-137       3.22E+OO    l.58E+OO    5.19E+OO u ws         SWL-i     374177001 5/31/2015     Fe-59      -2.24E+OO    2.94E+OO    9.00E+OO u ws         SWL-2     374177001 5/31/2015     1-131      -1.00E+Ol    6.82E+OO    l.90E+Ol u ws         SWL-2     374177001 5/31/2015     K-40       -2.42E+Ol    l.67E+Ol    5.28E+Ol u ws         SWL-2     374177001 5/31/2015    La-140      -7.20E+OO    6.33E+OO    l.42E+Ol u ws         SWL-2     374177001 5/31/2015    Mn-54        l.75E+OO    1.19E+OO    3.40E+OO u ws         SWL-2     374177001 5/31/2015    Nb-95       -2.66E-01    l.41E+OO    4.56E+OO u ws         SWL-2     374177001 5/31/2015    Ru-103       8.63E-01    l.68E+OO    5.llE+OO u ws         S~-2      374177001 5/31/2015    Ru-106       l.81E+Ol    1.31E+Ol    4.45E+Ol u ws         SWL-2     374177001 5/31/2015    Sb-124      -3.79E+OO    3.46E+OO    9.81E+OO u ws         SWL-2     374177001 5/31/2015    Sb-125      -l.45E+OO    3.45E+OO    l.08E+Ol u ws         SWL-2     374177001 5/31/2015     Se-75       l.40E+OO    l.93E+OO    6.49E+OO u ws         SWL-2     374177001 5/31/2015    Th-228       6.27E+OO    4.72E+OO    8.56E+OO u ws         SWL-2     374177001 5/31/2015    Zn-65       -3.00E+OO    2.75E+OO    8.03E+OO u ws         SWL-2     374177001 5/31/2015     Zr-95      -l.41E+OO    2.76E+OO    8.18E+OO u ws         SWL-3     374177002 5/31/2015    Ac-228       l.67E-01    4.64E+OO    l.39E+Ol u ws         SWL-3     374177002 5/31/2015   Ag-108m       7.39E-01    8.51E-01    2.80E+OO u ws         SWL-3     374177002 5/31/2015   Ag-llOm      -1.18E+OO    1.19E+OO    2.95E+OO u ws         SWL-3     374177002 5/31/2015    Ba-140       8.72E+OO    9.79E+OO    3.35E+Ol u ws         SWL-3     374177002 5/31/2015     Be-7       -5.12E+OO    1.16E+Ol    3.80E+Ol u ws         SWL-3     374177002 5/31/2015    Ce-141       2.02E+OO    2.49E+OO    8.46E+OO u ws         SWL-3     374177002 5/31/2015    Ce-144      -4.74E+OO    7.03E+OO    2.31E+Ol u ws         SWL-3     374177002 5/31/2015    Co-57       -1.12E+OO    l.06E+OO    3.15E+OO u ws         SWL-3     374177002 5/31/2015    Co-58       -l.24E+OO    1.13E+OO    3.26E+OO u ws         SWL-3     374177002 5/31/2015    Co-60        l.51E+OO    l.22E+OO    4.19E+OO u ws         SWL-3     374177002 5/31/2015     Cr-51       4.37E+OO    l.46E+Ol    4.24E+Ol u ws         SWL-3     374177002 5/31/2015    Cs-134      -8.86E-01    l.07E+OO    3.20E+OO u ws         SWL-3     374177002 5/31/2015    Cs-137       2.17E+OO    l.96E+OO    3.19E+OO u ws         SWL-3     374177002 5/31/2015     Fe-59      -2.08E+OO    3.13E+OO    8.27E+OO u ws         SWL-3     374177002 5/31/2015     1-131       l.41E+OO    5.54E+OO    l.81E+Ol u ws         SWL-3     374177002 5/31/2015     K-40       -l.41E+Ol    l.58E+Ol    4.33E+Ol u ws         SWL-3     374177002 5/31/2015    La-140       1.33E+OO    3.47E+OO    1.16E+Ol u ws         SWL-3     374177002 5/31/2015    Mn-54       -3.36E-01    l.05E+OO    3.32E+OO u ws         SWL-3     374177002 5/31/2015    Nb-95        1.36E+OO    l.42E+OO    4.22E+OO u D-151

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                                END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN         DATE     NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L) ws         SWL-3     374177002    5/31/2015   Ru-103      -5.99E+OO    2.15E+OO    4.06E+OO u ws         SWL-3     374177002    5/31/2015   Ru-106      -8.43E+OO    9.06E+OO    2.77E+Ol u ws         SWL-3     374177002    5/31/2015   Sb-124      -2.37E-02    2.78E+OO    9.30E+OO u ws         SWL-3     374177002    5/31/2015   Sb-125       1.28E+OO    2.88E+OO    9.38E+OO u ws         SWL-3     374177002    5/31/2015    Se-75      -7.12E-01    l.56E+OO    5.0IE+OO u ws         SWL-3     374177002    5/31/2015   Th-228       7.12E+OO    4.03E+OO    7.76E+OO u ws         SWL-3     374177002    5/31/2015   Zn-65       -3.16E+OO    2.09E+OO    5.59E+OO u ws         SWL-3     374177002    5131/2015    Zr-95      -2.82E+OO    l.91E+OO    5.llE+OO u ws         SWL-2     376161002    6/30/2015     H-3       -l.08E+03    5.23E+02    l.87E+03 u ws         SWL-3     376161004    6/30/2015     H-3       -6.42E+02    5.23E+02    l.81E+03 u ws         SWL-2     376161001    6/30/2015   Ac-228      -5.49E+OO    3.18E+OO    6.96E+OO u ws         SWL-2     376161001    6/30/2015  Ag-108m      -4.84E-01    4.89E-01    1.48E+OO u ws         SWL-2     376161001    6/30/2015  Ag-llOm       4.69E-OI    5.87E-01    l.70E+OO u ws         SWL-2     376161001    6/30/2015   Ba-140      -7.30E+OO    5.85E+OO    l.81E+Ol u ws         SWL-2     376161001    6/30/2015    Be-7        1.13E+Ol    5.95E+OO    1.84E+Ol U*
ws         SWL-2     376161001    6/30/2015   Ce-141      -l.64E+OO    l.47E+OO    4.38E+OO u ws         SWL-2     376161001    6/30/2015   Ce-144       2.81E+OO    3.84E+OO    1.21E+Ol u ws         SWL-2     376161001    6/30/2015   Co-57       -4.19E-02    5.05E-01    1.60E+OO u ws         SWL-2     376161001    6/30/2015   Co-58       -1.82E-01    6.65E-01    l.84E+OO u ws         SWL-2     376161001    6/30/2015   Co-60        7.38E-01    6.24E-01    l.82E+OO u ws         SWL-2     376161001    6/30/2015    Cr-51       7.66E;t-OO  8.18E+OO    2.46E+Ol u ws         SWL-2     376161001    6/30/2015   Cs-134      -9.89E-01    7.57E-01    l.69E+OO u ws         SWL-2     376161001    6/30/2015   Cs-137       5.03E-01    l.02E+OO    1.79E+OO u ws         SWL-2     376161001    6/30/2015    Fe-59       2.25E+OO    l.40E+OO    4.53E+OO u ws         SWL-2     376161001    6/30/2015    1-131      -l.76E+OO    3.74E+OO    1.19E+Ol u ws         SWL-2     376161001    6/30/2015    K-40       -1.74E+OO    8;96E+OO    2,18E+Ol u ws         SWL-2     376161001. 6/30/2015   La-140       4.17E-01    2.27E+OO    6.36E+OO u ws         SWL-2     376161001    6/30/2015   Mn-54        2.96E-02    4.98E-01    1.62E+OO u ws         SWL-2     376161001  . 6/30i2015   Nb-95         6.48E-01   6.09E-01    l.99E+OO u ws         SWL-2     376161001    6/30/2015   Ru-103      -5.18E-01    l.35E+OO    2.39E+OO u ws         SWL-2     376161001    6/30/2015   Ru-106       6.73E+OO    4.94E+OO    1.61E+Ol u ws         SWL-2     376161001    6/30/2015   Sb-124       4.SIE-01    l.51E+OO    5.lOE+OO u ws         SWL-2     376161001    6/30/2015   Sb-125      -1.38E+OO    l.72E+OO    4.57E+OO u ws         SWL-2     376161001    6/30/2015    Se-75       2.32E-01    7.81E-01    2.58E+OO u ws         SWL-2     376161001    6/30/2015   Th-228       3.96E+OO    2.17E+OO    3.07E+OO UI ws         SWL-2     376161001    6/30/2015    Zn-65      -1.00E+OO    l.llE+OO    3.47E+OO u ws         SWL-2     376161001    6/30/2015    Zr-95        1.20E-01   l.03E+OO    3.37E+OO u ws         SWL-3     376161003    6/30/2015   Ac-228       5.0IE+OO    3.88E+OO    7.04E+OO u ws         SWL-3     376161003    6/30/2015  Ag-108m      -5.70E-01    4.32E-01    1.30E+OO u ws         SWL-3     376161003    6/30/2015  Ag-llOm      -3.52E-01    4.80E-01    1.56E+OO u ws         SWL-3     376161003    6/30/2015   Ba-140       9.24E+OO    5.89E+OO    l.86E+Ol u ws         SWL-3     376161003    6/30/2015    Be-7         6.86E-01   5.02E+OO    1.64E+Ol u ws         SWL-3     376161003    6/30/2015   Ce-141      -6.40E-01    l.25E+OO    3.96E+OO u ws         SWL-3     376161003    6/30/2015   Ce-144      -3.96E+OO    4.55E+OO    1.12E+Ol u ws         SWL-3     376161003    6/30/2015   Co-57        2.94E-01    4.87E-01    1.41E+OO u ws         SWL-3     376161003    6/30/2015   Co-58         6.04E-01   5.30E-01    1.77E+OO u ws         SWL-3     376161003    6/30/2015   Co-60        -1.75E-01   4.98E-01    l.57E+OO u ws         SWL-3     376161003    6/30/2015    Cr-51       7.75E+OO    6.87E+OO    2.26E+Ol u ws         SWL-3     376161003    6/30/2015   Cs-134        3.91E-OI   7.43E-01    l.54E+OO u ws         SWL-3     376161003    6/30/2015   Cs-137       -2.40E-01   7.09E-01    l.75E+OO u D-152

Dona.Id C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                        CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE       NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L) ws          SWL-3     376161003 6/30/2015      Fe-59      -3.46E-01    l.19E+OO    3.82E+OO u ws          SWL-3     376161003 6/30/2015       1-131     -1.SOE+OO    3.41E+OO    1.llE+Ol u ws          SWL-3     376161003 6/30/2015       K-40      -1.64E+Ol    8.46E+OO    2.03E+Ol u ws          SWL-3     376161003 6/30/2015      La-140      2.25E-02    1.68E+OO    5.60E+OO u ws          SWL-3     376161003 6/30/2015      Mn-54       5.25E-01    4.54E-01    1.51E+OO u ws          SWL-3     376161003 6/30/2015      Nb-95      -l.38E+OO    8.68E-01    l.84E+OO u ws          SWL-3     376161003 6/30/2015      Ru-103     -5.74E-01    7.49E-01    2.03E+OO u ws          SWL-3     376161003 6/30/2015      Ru-106      8.57E-02    4.41E+OO    l.42E+Ol u ws          SWL-3     376161003 6/30/2015      Sb-124      6.60E-01    l.30E+OO    4.40E+OO u ws          SWL-3     376161003 6/30/2015      Sb-125     -1.43E+OO    l.30E+OO    3.98E+OO u ws          SWL-3     376161003 6/30/2015       Se-75      4.45E-01    6.95E-01    2.34E+OO u ws          SWL-3     376161003 6/30/2015      Th-228     -7.12E-01    1.41E+OO    3.39E+OO u ws          SWL-3     376161003 6/30/2015      Zn-65      -l.63E+OO    I.25E+oo    3.07E+OO u ws          SWL-3     376161003 6/30/2015       Zr-95     -1.12E+OO    l.24E+OO    3.0IE+OO u ws          SWL-2     378470001 7/31/2015      Ac-228     -8.0SE+OO    4.63E+OO    7.25E+OO u ws          SWL-2     378470001 7/31/2015    Ag-108m      -8.37E-01    5.16E-01    1.47E+OO u ws          SWL-2     378470001 7/31/2015    Ag-llOm        l.88E-01   4.89E-01    l.63E+OO u ws          SWL-2     378470001 7/31/2015      Ba-140      8.14E+OO    5.77E+OO    l.89E+Ol u ws          SWL-2     378470001 7/31/2015       Be-7       l.03E+Ol    6.63E+OO    l.82E+Ol u ws          SWL-2     378470001 7/31/2015      Ce-141      2.50E+OO    l.54E+OO    4.15E+OO u ws          SWL-2     378470001 7/31/2015      Ce-144     -2.94E+OO    3.65E+OO    l.13E+Ol u ws          SWL-2     378470001 7/31/2015      Co-57       l.28E+OO    6.44E-01    l.47E+OO u ws          SWL-2     378470001 7/31/2015      Co-58      -2.96E-01    5.85E-01    l.87E+OO u ws         SWL-2      378470001 7/31/2015      Co-60      -4.46E-01    5.25E-01    1.64E+OO u ws         SWL-2      378470001 7/31/2015      Cr-51       6.51E+OO    7.51E+OO    2.28E+Ol u ws         SWL-2      378470001 7/31/2015      Cs-134      9.93E-01    l.02E+OO    1.90E+OO u ws         SWL-2      378470001 7/31/2015      Cs-137       l.97E-02   7.78E-01    l.84E+OO u ws          SWL-2     378470001 7/31/2015      Fe-59      -4.16E-01    1.26E+OO    4.16E+OO u ws          SWL-2     378470001 7/31/2015       1-131     -4.51E+OO    3.79E+OO    9.98E+OO u ws          SWL-2     378470001 7/31/2015       K-40       4.98E+OO    l.26E+Ol    1.68E+Ol u ws          SWL-2     378470001 7/31/2015      La-140     -2.40E+OO    l.85E+OO    5.34E+OO u ws          SWL-2     378470001 7/31/2015      Mn-54       2.69E-01    5. l 7E-01  l.70E+OO u ws          SWL-2     378470001 7/31/2015      Nb-95       2.47E-01    8.52E-01    l.83E+OO u ws          SWL-2     378470001 7/31/2015    . Ru-103     -4.75E-01    7.71E-01    2.20E+OO u ws          SWL-2     378470001 7/31/2015      Ru-106      5.26E+OO    4.79E+OO    1.58E+Ol u ws         SWL-2      378470001 7/31/2015      Sb-124     -1.18E+OO    l.64E+OO    4.41E+OO u ws         SWL-2      378470001 7/31/2015      Sb-125     -2.12E+OO    l.50E+OO    4.41E+OO u ws          SWL-2     378470001 7/31/2015       Se-75      2.04E+OO    1.15E+OO    2.50E+OO u ws          SWL-2     378470001 7/3 i/2015     Th-228     -3.65E-01    l.38E+OO    3.57E+OO u ws          SWL-2     378470001 7/31/2015      Zn-65      -6.45E-01    1.15E+OO    3.74E+OO u ws          SWL-2     378470001 7/31/2015       Zr-95     -1.04E+OO    l.06E+OO    3.27E+OO u ws          SWL-3     378470002 7/31/2015      Ac-228       l.97E-01   3.39E+OO    7.50E+OO u ws          SWL-3     378470002 7/31/2015    Ag-108m      -5.36E-02    4.49E-01    l.48E+OO u ws          SWL-3     378470002 7/31/2015    Ag-llOm      -5.22E-01    5.86E-01    1.55E+OO u ws          SWL-3     378470002 7/31/2015      Ba-140      3.52E+OO    5.71E+OO    l.87E+Ol u ws          SWL-3     378470002 7/31/2015       Be-7      -1.87E+OO    5.18E+OO    l.68E+Ol u ws         SWL-3      378470002 7/31/2015      Ce-141     -1.92E-02    1.53E+OO    4.41E+OO u ws         SWL-3      378470002 7/31/2015      Ce-144     -l.88E-01    3.91E+OO    1.27E+Ol u ws          SWL-3     378470002 7/31/2015      Co-57      -l.86E-03    4.99E-01    l.63E+OO u ws          SWL-3     378470002 7/3112015      Co-58       2.92E-01    5.38E-01    l.82E+OO u D-153

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN        DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L) ws         SWL-3     378470002   7/31/2015     Co-60       -5.58E-01   6.99E-Ol    l.63E+OO u ws         SWL-3     378470002   7/31/2015     Cr-51      -3.43E+OO    6.85E+OO    2.26E+Ol u ws         SWL-3     378470002   7131/2015    Cs-134       -8.64E-02   5.02E-01    1.68E+OO u ws         SWL-3     378470002   7/31/2015    Cs-137       1.33E+OO    6.33E-Ol    l.75E+OO u ws         SWL-3     378470002   7/31/2015     Fe-59       -6.15E-02   l.27E+OO    4.18E+OO u ws         SWL-3     378470002   7/31/2015     I-131        4.04E-02   3.08E+OO    l.03E+Ol u ws         SWL-3     378470002   7/31/2015     K-40        9.07E+OO    l.35E+Ol    1.45E+Ol u ws         SWL-3     378470002   7/31/2015    La-140      -3.14E+OO    1.89E+OO    5.37E+OO u ws         SWL-3     378470002   7/31/2015    Mn-54        -6.66E-01   7.58E-01    1.58E+OO u ws         SWL-3     378470002   7/31/2015    Nb-95        -8.76E-02   5.64E-01    1.89E+OO u ws         SWL-3     378470002   7/31/2015    Ru-103       -5.33E-02   7.59E-01    2.18E+OO u ws         SWL-3     378470002   7/31/2015    Ru-106      -3.50E+OO    5.60E+OO    l.53E+Ol U ws         SWL-3     378470002   7/31/2015    Sb-124        7.30E-01   1.40E+OO    4.75E+OO U ws         SWL-3     378470002   7/31/2015    Sb-125       1.42E+OO    1.52E+OO    4.84E+OO U ws         SWL-3     378470002   7/31/2015     Se-75        7.23E-bl   7.89E-01    2.65E+OO U ws         SWL-3     378470002   7/31/2015    Th-228       8.22E-Ol    1.80E+OO    3.72E+OO U ws         SWL-3     378470002   7/31/2015    Zn-65       -1.76E+OO    1.22E+OO    3.54E+OO U ws         SWL-3     378470002   7/31/2015     Zr-95        l.31E-01   1.02E+OO    3.44E+OO U ws         SWL-2     380452001   8/31/2015    Ac-228      -2.62E+OO    3.26E+OO    7.62E+OO U ws         SWL-2     380452001   8/31/2015   Ag-108m       5.55E-01    4.98E-01    1.64E+OO U ws         SWL"2     380452001   8/31/2015   Ag-llOm        7.29E-Ol   5.82E-Ol    l.86E+OO U ws         SWL-2     380452001   8/31/2015    Ba-140       3.32E+OO    6.76E+OO    2.23E+Ol U ws         SWL-2     380452001   8/31/2015     Be-7        6.72E+OO    5.96E+OO    l.95E+Ol U ws         SWL-2     380452001   8/31/2015    Ce-141       1.42E+OO    2.18E+OO    3.99E+OO U ws         SWL-2     380452001   8/31/2015    Ce-144      -1.94E+OO    3.32E+OO    1.llE+Ol U ws         SWL-2     380452001   8/31/2015    Co-57         1.21E-Ol   4.44E-Ol    1.41E+OO U ws         SWL-2     380452001   8/31/2015    Co-58        1.44E+OO    8.09E-Ol    2.27E+OO U ws         SWL-2     380452001   8/31/2015    Co-60        6.30E-Ol    6.52E-Ol    2.18E+OO U ws         SWL-2     380452001   8/31/2015     Cr-51       3.20E+OO    8.llE+OO    2.61E+Ol U ws         SWL-2     380452001   8/31/2015    Cs-134      -2.92E-02    6. l IE-01  2.03E+OO U ws         SWL-2     380452001   8/31/2015    Cs-137       2.42E-01    6.07E-01    l.97E+OO U ws         sw1-2*    380452001   8/31/2015     Fe-59       2.39E+OO    1.61E+OO    5.12E+OO U ws         SWL-2     380452001   8/31/2015     I-131      -5.26E+OO    4.09E+OO    l.28E+Ol U ws         SWL-2     380452001   8/31/2015     K-40       -7.52E+OO    1.05E+Ol    2.48E+Ol U ws         SWL-2     380452001   8/31/2015    La-140      -9.20E-01    2.34E+OO    7.45E+OO U ws         SWL-2     380452001   8/31/2015    Mn-54        2.37E-01    5.67E-01    l.89E+OO U ws         SWL-2     380452001   8/31/2015    Nb-95         1.98E-01   6.3 IE-01   2.12E+OO U ws         SWL-2     380452001   8/31/2015    Ru-103      -1.24E+OO    9.69E-01    2.53E+OO U ws         SWL-2     380452001   8/31/2015    Ru-106       9.09E+OO    7.13E+OO    l.76E+Ol U ws         SWL-2     380452001   8/31/2015    Sb-124       2.02E+OO    1.71E+OO    5.77E+OO U ws         SWL-2     380452001   8/31/2015    Sb-125       2.46E+OO    1.53E+OO    4.91E+OO U ws         SWL-2     380452001   8/31/2015     Se-75      -1.74E-01    8.03E-01    2.60E+OO U ws         SWL-2     380452001   8/31/2015    Th-228       8.00E-01    1.56E+OO    3.49E+OO U ws         SWL-2     380452001 . 8/31/2015    Zn-65       -1.92E-01    l.27E+OO    4.07E+OO U ws         SWL-2     380452001   8/31/2015     Zr-95        9.77E-01   1.17E+OO    3.93E+OO U ws         SWL-3     380452002   8/31/2015    Ac-228       1.04E+Ol    5.53E+OO    8.89E+OO UI ws         SWL-3     380452002   8/31/2015   Ag-108m       3.03E-01    5.33E-01    l.80E+OO U ws         SWL-3     380452002   8/31/2015   Ag-llOm       2.82E-01    6.46E-01    1.86E+OO U ws         SWL-3     380452002   8/31/2015    Ba-140       l.OIE+Ol    7.58E+OO    2A8E+Ol  U ws         SWL-3     380452002   8/31/2015     Be-7       -4.60E+OO    6.51E+OO    2.12E+Ol U D-154

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE     NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L) ws         SWL-3     380452002 8/31/2015   Ce-141       4.98E+OO    2.08E+OO    5.38E+OO u ws         SWL-3     380452002 8/31/2015   Ce-144       2.lOE+OO    4.34E+OO    l.38E+Ol u ws         SWL-3     380452002 8/31/2015   Co-57        2.llE-01    5.75E-01    l.83E+OO u ws         SWL-3     380452002 8/31/2015   Co-58       -7.19E-01    7.16E-01    2.18E+OO u ws         SWL-3     380452002 8/31/2015   Co-60        5.75E-01    6.00E-01    l.98E+OO u ws         SWL-3     380452002 8/31/2015    Cr-51      -9.59E+OO    9.74E+OO    2.79E+Ol u ws         SWL-3     380452002 8/31/2015   Cs-134       2.94E-01    6.58E-01    2.15E+OO u ws         SWL-3     380452002 8/31/2015   Cs-137       1.35E+OO    8.94E-01    2.02E+OO u ws         SWL-3     380452002 8/31/2015    Fe-59       1.33E+OO    l.50E+OO    4.98E+OO u ws         SWL-3     380452002 8/31/2015    I-131       7.26E+OO    5.18E+OO    l.63E+Ol u ws         SWL-3     380452002 8/31/2015    K-40       -1.35E+Ol    l.16E+Ol    2.73E+Ol u ws         SWL-3     380452002 8/31/2015   La-140       3.82E-02    2.50E+OO    8.34E+OO u ws         SWL-3     380452002 8/31/2015   Mn-54         l.52E-01   5.91E-Ol    l.92E+OO_ u ws         SWL-3     380452002 8/31/2015   Nb-95       -l.60E+OO    l.49E+OO    2.59E+OO u ws         SWL-3     380452002 8/31/2015   Ru-103      -l.31E+OO    9.06E-01    2.77E+OO u ws         SWL-3     380452002 8/31/2015   Ru-106      -4.12E+OO    5.57E+OO    l.78E+Ol u ws         SWL-3     380452002 8/31/2015   Sb-124      -l.26E+OO    l.50E+OO    4.65E+OO u ws         SWL-3     380452002 8/31/2015   Sb-125       5.48E-01    l.56E+OO    5.30E+OO u ws         SWL-3     380452002 8/31/2015    Se-75      -3.0lE-01    8.94E-01    2.92E+OO u ws         SWL-3     380452002 8/31/2015   Th-228      -3.16E+OO    l.96E+OO    4.04E+OO u ws         SWL-3     380452002 8/31/2015    Zn-65       l.32E+OO    1.30E+OO    3.77E+OO u ws         SWL-3     380452002 8/31/2015    Zr-95      -l.20E+OO    l.50E+OO    3.99E+OO u ws         SWL-2     382256002 9/30/2015     H-3        l.67E+02    l.78E+02    5.56E+02 u ws         SWL-3     382256004 9/30/2015     H-3        l.74E+02    l.65E+02    5.12E+02 u ws         SWL-2     382256001 9/30/2015   Ac-228       8.lOE+OO    4.00E+OO    6.49E+OO UI ws         SWL-2     382256001 9/30/2015  Ag-108m      -7.77E-01    5.12E-01    l.49E+OO u ws         SWL-2     382256001 9/30/2015  Ag-1 lOni     5.26E-01    5.95E-01    l.75E+OO u ws         SWL-2     382256001 9/30/2015   Ba-140       2.81E+OO    5.80E+OO    l.97E+Ol u ws         SWL-2     382256001 9/30/2015    Be-7        9.00E+OO    5.97E+OO    l.86E+Ol u ws         SWL-2     382256001 9/30/2015   Ce-141       3.85E-01    2.31E+OO    4.18E+OO u ws         SWL-2     382256001 9/30/2015   Ce-144      -6.76E+OO    4.lOE+OO    l.25E+Ol u ws         SWL-2     382256001 9/30/2015   Co-57       -5.91E-Ol    5.18E-01    l.67E+OO u ws         SWL-2     382256001 9/30/2015   Co-58       -2.52E-01    5.89E-01    l.91E+OO u ws         SWL-2     382256001 9/30/2015   Co-60        4.37E-01    5.27E-OI    l.79E+OO u ws         SWL-2     382256001 9/30/2015    Cr-51       4.12E-01    8.97E+OO    2.40E+OI u ws         SWL-2*    382256001 9/30/2015   Cs-134        2.34E-02   5.37E-OI    l.78E+OO u ws         SWL-2     382256001 9/30/2015   Cs-137       3.88E-01    9.51E-OI    l.71E+OO u ws         SWL-2     382256001 9/30/2015    Fe-59      -8.59E-02    l.20E+OO. 3.87E+OO u ws         SWL-2     382256001 9/30/2015    I-131       9.42E+OO    4.05E+OO    1.17E+OI u ws         SWL-2     382256001 9/30/2015    K-40        8.41E+OO    l.16E+Ol    2.59E+Ol u ws         SWL-2     382256001 9/30/2015   La-140       7.90E-OI    2.47E+OO    7.16E+OO u ws         SWL-2     382256001 9/30/2015   Mn-54        2.72E+OO    1.33E+OO    l.80E+OO UI ws         SWL-2     382256001 9/30/2015   Nb-95         2.lOE-01   6.39E-01    2.13E+OO u ws         SWL-2     382256001 9/30/2015   Ru-103        4.51E-02   7.64E-01    2.45E+OO u ws         SWL-2     382256001 9/30/2015   Ru-106      -l.05E+OI    5.24E+OO    l.46E+Ol u ws         SWL-2     382256001 9/30/2015   Sb-124       -5.27E-01   l.58E+OO    5.13E+OO u ws         SWL-2     382256001 9/30/2015   Sb-125       -9.74E-01   l.50E+OO    4.73E+OO u ws         SWL-2     382256001 9/30/2015    Se-75      -l.12E+OO    8.88E-01    2.53E+OO u ws         SWL-2     382256001 9/30/2015   Th-228       l.02E+OO    l.68E+OO    3.13E+OO u ws         SWL-2     382256001 9/30/2015    Zn-65      -l.19E+OO    l.20E+OO    3.65E+OO u D-155

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/L)    (pCi/L)    (pCi/L) ws         SWL-2     382256001 9/30/2015     Zr-95      -5.21E-Ol
* l.09E+OO    3.54E+OO u ws         SWL-3     382256003 9/30/2015    Ac-228       l.68E+Ol    6.08E+OO    6.47E+OO UI ws         SWL-3     382256003 9/30/2015   Ag-108m       7.04E-Ol    4.28E-Ol    l.34E+OO u ws         SWL-3     382256003 9/30/2015   Ag-llOm      -4.25E-03    4.26E-Ol    1.43E+OO u ws         SWL-3     382256003 9/30/2015    Ba-140       6.34E+OO    5.22E+OO    l.56E+Ol u ws         SWL-3     382256003 9/30/2015     Be-7       -5.14E+OO    5.24E+OO    l.39E+Ol u ws         SWL-3     382256003 9/30/2015    Ce-141       l.46E+OO    l.15E+OO    3.62E+OO u ws         SWL-3     382256003 9/30/2015    Ce-144      -5.87E-01    3.06E+OO    9.85E+OO u ws         SWL-3     382256003 9/30/2015    Co-57        8.13E-03    4.06E-01    1.32E+OO u ws         SWL-3     382256003 9/30/2015    Co-58       -6.52E-Ol    5.16E-01    l.56E+OO u ws         SWL-3     382256003 9/30/2015    Co-60        l.31E-Ol    4.95E-Ol    l.55E+OO u ws         SWL-3     382256003 9/30/2015     Cr-51      -l.34E-01    5.87E+OO    1.95E+Ol u ws         SWL-3     382256003 9/30/2015    Cs-134       3.89E-Ol    4.53E-01    l.51E+OO u ws         SWL-3     382256003 9/30/2015    Cs-137      -l.06E-Ol    4.4IE-Ol    1.47E+OO u ws         SWL-3     382256003 9/30/2015     Fe-59      -8.14E-Ol    l.45E+OO    3.88E+OO u ws         SWL-3     382256003 9/30/2015     1-131       2.61E+OO    2.83E+OO    9.28E+OO u ws         SWL-3     382256003 9/30/2015     K-40        l.57E+Ol    6.71E+OO    2.02E+Ol u ws         SWL-3     382256003 9/30/2015    La-140       2.51E-01    l.72E+OO    5.69E+OO u ws         SWL-3     382256003 9/30/2015    Mn-54       -l.60E-01    4.45E-Ol    1.45E+OO u ws         SWL-3     382256003 9/30/2015    Nb-95        4.07E-Ol    5.06E-Ol    l.69E+OO u ws         SWL-3     382256003 9/30/2015    Ru-103      -l.66E-Ol    6.74E-01    l.89E+OO u ws         SWL-3     382256003 9/30/2015    Ru-106      -1.09E+Ol    6.56E+OO    l.35E+Ol u ws         SWL-3     382256003 9/30/2015    Sb-124      -l.14E-Ol    l.26E+OO    4.llE+OO u ws         SWL-3     382256003 9/30/2015    Sb-125       l.47E+OO    1.24E+OO    4.00E+OO u ws         SWL-3     382256003 9/30/2015     Se-75       7.lOE-01    6.39E-Ol    2.llE+OO u ws         SWL-3     382256003 9/30/2015    Th-228      -9.75E-Ol    l.32E+OO    3.07E+OO u ws         SWL-3     382256003 9/30/2015     Zn-65       l.09E+OO    l.02E+OO    3.32E+OO u ws         SWL-3     382256003 9/30/2015     Zr-95      -l.43E+OO    l.68E+OO    3.02E+OO u ws         SWL-2     384557001 10/31/2015   Ac-228      -4.45E+OO    2.68E+OO    5.87E+OO u ws         SWL-2     384557001 10/31/2015  Ag-108m      -l.42E-Ol    3.59E-Ol    l.18E+OO u ws         SWL-2     384557001 10/31/2015  Ag-llOm       2.24E-Ol    4.04E-Ol    l.31E+OO u ws         SWL-2     384557001 10/31/2015   Ba-140       4.87E+OO    4.69E+OO    l.53E+Ol u ws         SWL-2     384557001 10/31/2015    Be-7        3.48E+OO    4.22E+OO    l.40E+Ol u ws         SWL-2     384557001 10/31/2015   Ce-141       9.57E-Ol    l.09E+OO    3.26E+OO u ws         SWL-2     384557001 10/31/2015   Ce-144      -2.19E+OO    2.82E+OO    9.18E+OO u ws         SWL-2     384557001 10/31/2015    Co-57       3.36E-Ol    3.73E-01    l.25E+OO u ws         SWL-2     384557001 10/31/2015    Co-58       4.73E-01    4.92E-Ol    l.65E+OO u ws         SWL-2     384557001 10/31/2015    Co-60      -3.51E-Ol    4.93E-01    1.34E+OO u ws         SWL-2     384557001 10/31/2015    Cr-51      -6.85E+OO    7.78E+OO    l.89E+Ol u ws         SWL-2     384557001 10/31/2015   Cs-134       3.62E-Ol    4.60E-Ol    l.55E+OO u ws         SWL-2     384557001 10/31/2015   Cs-137      -9.73E-02    4.65E-Ol    l.29E+OO u ws         SWL-2     384557001 10/31/2015    Fe-59       8.29E-01    l.19E+OO    3.43E+OO u ws         SWL-2     384557001 10/31/2015    I-131       2.70E+OO    2.59E+OO    8.64E+OO u ws         SWL-2     384557001 1013112015    K-40       -6.82E+OO    8.18E+OO    2.09E+Ol u ws         SWL-2     384557001 10/31/2015   La-140       1.97E+OO    l.66E+OO    5.51E+OO u ws         SWL-2     384557001 10/31/2015   Mn-54       -3.50E-Ol    4.16E-Ol    l.32E+OO u ws         SWL-2     384557001 10/31/2015   Nb-95       -4.l IE-01   6.66E-Ol    l.66E+OO u ws         SWL-2     384557001 10/31/2015   Ru-103      -4.59E-Ol    5.86E-Ol    I.86E+OO u ws         SWL-2     384557001 10/31/2015   Ru-106       7.16E-Ol    4.04E+OO    1.31E+Ol u ws         SWL-2     384557001 10/31/2015   Sb-124      -4.83E-Ol    l.22E+OO    3.91E+OO u D-156

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                        CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE       NUCLIDE           (pCi/L)   (pCi/L)     (pCi/L) ws         SWL-2     384557001 10/31/2015     Sb-125     -l.46E+OO    l.15E+OO    3.54E+OO u ws         SWL-2     384557001 10/31/2015      Se-75      9.22E-Ol    6.63E-Ol    2.07E+OO u ws         SWL-2     384557001 10/31/2015     Th-228     -2.18E+OO    l.54E+OO    2.80E+OO u ws         SWL-2     384557001 10/31/2015     Zn-65       3.24E-Ol    9.06E-Ol    2.98E+OO u ws         SWL-2     384557001 10/31/2015      Zr-95     -6.71E-Ol    8.43E-Ol    2.72E+OO u ws         SWL-3     384557002 10/31/2015     Ac-228     -5.56E+OO    3.44E+OO    6.23E+OO u ws         SWL-3     384557002 10/31/2015   Ag-108m       8.27E-02    4.07E-Ol    l.33E+OO u ws         SWL-3     384557002 10/31/2015   Ag-llOm      -3.50E+OO    9.52E-Ol    l.35E+OO u ws         SWL-3     384557002 10/31/2015     Ba-140      l.68E+OO    4.79E+OO    l.54E+Ol u ws         SWL-3     384557002 10/31/2015      Be-7      -2.86E+OO    4.73E+OO    l.49E+Ol u ws         SWL-3     384557002 10/31/2015     Ce-141     -2.31E+OO    l.81E+OO    3.44E+OO u ws         SWL-3     384557002 10/3 i/2015    Ce-144      1.14E+OO    3.22E+OO    9.92E+OO u ws         SWL-3     384557002 10/31/2015     Co-57      -9.87E-Ol    7.09E-Ol    l.28E+OO u ws         SWL-3     384557002 10/31/2015     Co-58      -3.14E-Ol    5.58E-Ol    l.54E+OO u ws         SWL-3     384557002 10/31/2015     Co-60      -2.lOE-01    4.30E-Ol    l.39E+OO u ws         SWL-3     384557002 10/31/2015      Cr-51      4.09E+OO    5.95E+OO    l.97E+Ol u ws         SWL-3     384557002 10/31/2015     Cs-134       9.46E-Ol   5.05E-Ol    l.58E+OO u ws         SWL-3     384557002 10/31/2015     Cs-137     -8.75E-Ol    9.93E-Ol    l.95E+OO u ws         SWL-3     384557002 10/31/2015      Fe-59     -9.24E-Ol    l.IOE+QO    3.52E+OO u ws         SWL-3     384557002 10/31/2015      I-131     -2.llE-01    2.63E+OO    8.63E+OO u ws         SWL-3     384557002 10/31/2015      K-40       2.52E+Ol    l.39E+Ol    I.42E+Ol UI ws         SWL-3     384557002 10/31/2015     La-140       l.58E-Ol   l.84E+OO    5.16E+OO u ws         SWL-3     384557002 10/31/2015     Mn-54      -4.SOE-01    4.43E-Ol    l.36E+OO u ws         SWL-3     384557002 10/31/2015     Nb-95      -2.00E-01    5. l IE-01  1.66E+OO u ws         SWL-3     384557002 10/31/2015     Ru-103       l.92E-02   7.02E-Ol    l.97E+OO u ws         SWL-3     384557002 10/31/2015     Ru-106     -3.62E-Ol    3.95E+OO    l.32E+Ol u ws         SWL-3     384557002 10/31/2015     Sb-124     -4.94E-Ol    l.29E+OO    4.09E+OO u ws         SWL-3     384557002 10/31/2015     Sb-125      5.52E-Ol    l.24E+OO    4.04E+OO u ws         SWL-3     384557002 10/31/2015      Se-75     -4.78E-Ol    6.57E-Ol    2.14E+OO u ws         SWL-3     384557002 10/31/2015     Th-228     -3.93E-02    l.51E+OO    3.27E+OO u ws         SWL-3     384557002 10/31/2015      Zn-65     -l.37E+OO    9.41E-Ol    2.80E+OO u ws         SWL-3     384557002 10/31/2015      Zi:-95     2.05E+OO    9.98E-Ol    3.07E+OO u ws         SWL-2     386484001 11/30/2015     Ac-228     -3.64E+OO    4.0IE+OO    l.20E+Ol u ws         SWL-2     386484001 11/30/2015    Ag-108m     -1.IIE+OO    8.31E-Ol    2.47E+OO u ws         SWL-2     386484001 11/30/2015    Ag-llOm      -4.42E-Ol   7.67E-Ol    2.37E+OO u ws         SWL-2     386484001 11/30/2015     Ba-140       l.93E+Ol   l.13E+Ol    3.67E+Ol u ws         SWL-2     386484001 11/30/2015      Be-7       l.15E+Ol    I.02E+Ol    3.39E+Ol u ws         SWL-2     386484001 11/30/2015     Ce-141      3.58E+OO    3.19E+OO    'Z.52E+OO u ws         SWL-2     386484001 11/30/2015     Ce-144     -l.40E+Ol    7.30E+OO    2.0IE+Ol u ws         SWL-2     386484001 11/30/2015     Co-57       -5.0IE-01   9.77E-Ol    2.78E+OO u ws         SWL-2     386484001 11/30/2015     Co-58      -l.09E+OO    9.65E-Ol    2.93E+OO u ws         SWL-2     386484001 11/30/2015     Co-60      -l.02E+OO    9.61E-Ol    2.42E+OO u ws         SWL-2     386484001 11/30/2015      Cr-51      3.55E+OO    l.30E+Ol    4.38E+Ol u ws         SWL-2     386484001 11/30/2015     Cs-134       8.96E-02    8.58E-Ol   2.91E+OO u ws         SWL-2     386484001 11/30/2015     Cs-137       4.32E-Ol    8.37E-Ol   2.76E+OO u ws         SWL-2     386484001 11/30/2015      Fe-59     -2.12E+OO    2.08E+OO    6.16E+OO u ws         SWL-2     386484001 11/30/2015      1-131     -2.87E+OO    6.20E+OO    2.02E+Ol u ws         SWL-2     386484001 11/30/2015      K-40      -7.98E+OO    l.26E+Ol    3.91E+Ol u ws         SWL-2     386484001 11/30/2015     La-140      2.13E+OO    2.70E+OO    9.55E+OO u ws         SWL-2     386484001 11/30/2015     Mn-54      -l.22E+OO     8.83E-Ol   2.59E+OO u D-157

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE           (pCi/L)   (pCi/L)    (pCi/L) ws         SWL-2     386484001 11/30/2015   Nb-95       -2.38E-OI    9.75E-OI    3.25E+OO u ws         SWL-2     386484001 11/30/2015   Ru-103      -5.38E-OI    1.21E+OO    3.85E+OO u ws         SWL-2     386484001 11/30/2015   Ru-106      -3.74E+OO    7.29E+OO    2.28E+OI u ws         SWL-2     386484001 11/30/2015   Sb-124       2.30E-OI    2.06E+OO    6.97E+OO u ws         SWL-2     386484001 11/30/2015   Sb-125      -3.89E+OO    2.92E+OO    7.78E+OO u ws         SWL-2     386484001 11/30/2015    Se-75        l.32E-02   l.30E+OO    4.40E+OO u ws         SWL-2     386484001 11/30/2015   Th-228        1.l IE-01  2.84E+OO    6.51E+OO u ws         SWL-2     386484001 11/30/2015    Zn-65       l.69E+OO    2.0IE+OO    6.79E+OO u ws         SWL-2     386484001 1113012015    Zr-95      -l.92E+OO    l.76E+OO    5.43E+OO u ws         SWL-3     386484002 11/30/2015   Ac-228       3.62E+OO    4.33E+OO    l.27E+OI u ws*        SWL-3     386484002 11/30/2015  Ag-108m      -2.19E+OO    9.35E-OI    2.33E+OO u ws         SWL-3     386484002 11/30/2015  Ag-llOm        l.77E-02   8.00E-01    2.63E+OO u ws         SWL-3     386484002 11/30/2015   Ba-140      -5.82E+OO    l.08E+OI    3.48E+OI u ws         SWL-3     386484002 11/30/2015    Be-7       -7.53E-OI    8.99E+OO    2.98E+OI u ws         SWL-3     386484002 11/30/2015   Ce-141       2.37E+OO    3.0IE+OO    8.18E+OO u ws         SWL-3     386484002 11/30/2015   Ce-144       7.08E+OO    6.63E+OO    2.18E+OI u ws         SWL-3     386484002 11/30/2015   Co-57        3.SIE-01    8.22E-OI    2.75E+OO u ws         SWL-3     386484002 11/30/2015   Co*58        3.95E-OI    9.90E-OI    3.26E+OO u ws         SWL-3     386484002 11/30/2015   Co-60        3.00E-01    l.51E+OO    2.94E+OO u ws         SWL-3     386484002 11/30/2015    Cr-51      -1.SOE+OI    l.70E+OI    4.37E+OI u ws         SWL-3     386484002 11/30/2015   Cs-134      *6.49E-OI    1.02E+OO    3.38E+OO u ws         SWL-3     386484002 11/30/2015   Cs-137      -5. llE-01   8.72E-OI    2.74E+OO u ws         SWL-3     386484002 11/30/2015    Fe-59       2.36E+OO    2.47E+OO    7.47E+OO u ws         SWL-3     386484002 11/30/2015    I-131       1.43E+OO    6.44E+OO    2.18E+OI u ws         SWL-3     386484002 11/30/2015    K-40       -2.27E+OI    l.46E+OI    4.18E+OI u ws         SWL-3     386484002 11/30/2015   La-140       1.1 IE+OO   3.69E+OO    l.06E+OI u ws         SWL-3     386484002 11/30/2015   Mn-54       -l.58E+OO    9.77E-OI    2.62E+OO u ws         SWL-3     386484002 11/30/2015   Nb-95        l.43E+OO    l.llE+OO    3.67E+OO u ws         SWL-3     386484002 11/30/2015   Ru-103      -l.62E+OO    l.62E+OO    4.29E+OO u ws         SWL-3     386484002 11/30/2015   Ru-106      -3.99E+OO    7.90E+OO    2.51E+Ol u ws         SWL-3     386484002 11130/2015   Sb-124      -3.14E+OO    2.44E+OO    6.49E+OO u ws         SWL-3     386484002 11/30/2015   Sb-125      -5.SOE-01    2.69E+OO    8.23E+OO u ws         SWL-3     386484002 11/30/2015    Se-75      -3.44E-OI    l.33E+OO    4.27E+OO u ws         SWL-3     386484002 11/30/2015   Th-228       8.05E+OO    3.46E+OO    6.70E+OO UI ws         SWL-3     386484002 11/30/2015   Zn-65       -3.29E+OO    1.98E+OO    5.30E+OO u ws         SWL-3     386484002 11/30/2015    Zr-95      -3.22E-02    2.28E+OO    6.42E+OO u ws         SWL-2     388628002 12/31/2015     H-3        7.44E+OI    4.63E+02    l.51E+03 u ws         SWL-3     388628004 12/31/2015     H-3       -l.44E+02    4.44E+02    l.48E+03 u ws         SWL-2     388628001 12/31/2015   Ac-228      -l.79E+OO    2.89E+OO    6.23E+OO u ws         SWL-2     388628001 12/31/2015  Ag-108m      -3.46E-01    3.90E-OI    1.26E+OO u ws         SWL-2     388628001 12/31/2015  Ag-llOm      -5.17E-OI    4.42E-OI    l.35E+OO u ws         SWL-2     388628001 12/31/2015   Ba-140      -6.43E-OI    6.27E+OO    l.57E+Ol u ws         SWL-2     388628001 12/31/2015    Be-7       -l.49E+OO    4.54E+OO    l.50E+OI u ws         SWL-2     388628001 12/31/2015   Ce-141       3.45E+OO    l.47E+OO    3.71E+OO u ws         SWL-2     388628001 12/31/2015   Ce-144       l.46E+OO    3.24E+OO    9.98E+OO u ws         SWL-2     388628001 12/31/2015   Co-57        5.37E-OI    4.09E-01    l.31E+OO u ws        SWL-2      388628001 12/31/2015   Co-58        l.OIE+OO    5.43E-OI    l.67E+OO u ws        SWL-2      388628001 12/31/2015   Co-60        3.79E-OI    5.43E-OI    l.36E+OO u ws        SWL-2      388628001 12/31/2015   Cr-51       4.20E+OO     6.25E+OO    2.00E+OI u ws         SWL-2     388628001 12/31/2015   Cs-134       3.97E-OI    4.74E-OI    1.54E+OO u D-158

Donald C. Cook Nuclear Plant                  Annual Radiological Environmental Operating Report 2015 SAMPLE                                    END                           CONC       STD.DEV. MDC      FLAGS TYPE      STATION         LSN           DATE        NUCLIDE             (pCi/L)     (pCi/L)  (pCi/L) ws         SWL-2       388628001     12/31/2015      Cs-137         4.15E-OI      4.53E-OI  l.48E+OO u ws         SWL-2       388628001     12/31/2015       Fe-59         3.74E-OI      1.1 IE+OO 3.70E+OO u ws         SWL-2       388628001     12/31/2015       1-131         2.78E+OO      2.88E+OO  9.59E+OO u ws         SWL-2       388628001     12/31/2015       K-40         -4.81E+OO      8.77E+OO  l.96E+OI u ws         SWL-2       388628001     12/31/2015      La-140         l.68E+OO      l.75E+OO  5.73E+OO u ws         SWL-2       388628001     12/31/2015      Mn-54          7.53E-OI      4.50E-OI  l.40E+OO u ws         SWL-2       388628001     12/31/2015      Nb-95          l.06E+OO      5.58E-01  l.71E+OO u ws         SWL-2       388628001     12/31/2015      Ru-103        -2.46E-OI      9.81E-OI  l.86E+OO u ws         SWL-2       388628001     12/31/2015      Ru-106        -1.14E+OO      3.94E+OO  l.28E+OI u ws         SWL-2       388628001     12/31/2015      Sb-124         8.14E-02      l.49E+OO  4.12E+OO u ws         SWL-2       388628001     12/31/2015      Sb-125        -1.41E+OO      1.22E+OO  3.86E+OO u ws         SWL-2       388628001     12/31/2015       Se-75         7.98E-02      6.65E-OI  2.15E+OO u ws         SWL-2       388628001     12/31/2015      Th-228         2.22E+OO      l.65E+OO  3.13E+OO u ws         SWL-2       388628001     12/31/2015      Zn-65         -1.14E+OO      9.49E-OI  2.90E+OO u ws         SWL-2       388628001     12/31/2015       Zr-95         3.41E-OI      9.48E-OI  3.IOE+OO u ws         SWL-3       388628003     12/31/2015      Ac-228        -7.81E+OO      4.47E+OO  7.95E+OO u ws         SWL-3       388628003     12/31/2015     Ag-108m         5.98E-02      4.86E-OI  l.57E+OO u ws         SWL-3       388628003     12/31/2015     Ag-llOm          l.98E-OI     5.24E-OI  l.76E+OO u ws         SWL-3       388628003     12/31/2015      Ba-140        -l.82E+OI      l.IOE+OI  2.0IE+OI u ws         SWL-3       388628003     12/31/2015       Be-7          9.56E+OO      6.05E+OO  l.88E+OI u ws         SWL-3       388628003     12/31/2015      Ce-141         3.40E+OO      l.67E+OO  4.55E+OO u ws         SWL-3       388628003     12/31/2015      Ce-144        -4.0IE+OO      3.87E+OO  l.25E+OI u ws         SWL-3       388628003     12/31/2015      Co-57         -l.71E-OI      5.09E-OI  l.72E+OO u ws         SWL-3       388628003     12/31/2015      Co-58         -2.97E-03      5.99E-01  l.98E+OO u ws         SWL-3       388628003     12/31/2015      Co-60          9.37E-OI      5.98E-01  1.98E+OO u ws         SWL-3       388628003     12/31/2015       Cr-51         3.31E+OO      7.68E+OO  2.52E+OI u ws         SWL-3       388628003     12/31/2015      Cs-134        -3.79E-OI      5.75E-01  l.84E+OO u ws         SWL-3       388628003     12/31/2015      Cs-137        -6.56E-01      5.58E-01  1.73E+OO u ws         SWL-3       388628003     12/31/2015       Fe-59        -9.54E-OI      l.44E+OO  4.50E+OO u ws         SWL-3       388628003     12/31/2015       I-131        -9.29E-02      4.06E+OO  1.16E+OI u ws         SWL-3       388628003     12/31/2015       K-40          l.29E+Ol      l.69E+Ol  l.80E+OI u ws         SWL-3       388628003     12/31/2015      La-140        -3.38E+OO      2.17E+OO  6.20E+OO u ws         SWL-3       388628003     12/31/2015      Mn-54         -9.67E-02      7.61E-OI  l.76E+OO u ws         SWL-3       388628003     12/31/2015      Nb-95          2.13E+OO      l.38E+OO  2.30E+OO u ws         SWL-3       388628003     12/31/2015      Ru-103        -4.30E-01      8.55E-01  2.33E+OO u ws         SWL-3       388628003      12/31/2015     Ru-106        -2.85E+OO      4.55E+OO  l.48E+Ol u ws         SWL-3       388628003      12/31/2015     Sb-124         3.24E-01      1.52E+OO  5.08E+OO u ws         SWL-3       388628003      12/31/2015     Sb-125.        3.38E+OO      l.68E+OO  5.04E+OO u ws         SWL-3       388628003     12/31/2015       Se-75          l.32E-02     7.90E-01  2.61E+OO u ws         SWL-3       388628003     12/31/2015      Th-228        -2.86E-01      l.87E+OO  3.85E+OO u ws         SWL-3       388628003      12/31/2015     Zn"65          l.35E+OO      l.20E+OO  3.90E+OO u ws         SWL-3       388628003      12/31/2015      Zr-95         l.79E+OO      1.14E+OO  3.67E+OO u U: Target isotope was analyzed for but not detected above the MDC and LLD.
UI: Uncertain identification for gamma spectroscopy.
X: Lab-specific qualifier (see data summary package for narrative).
M: Reported result is less than the LLD and greater than the MDC.
DL: Measured MDC is greater than the LLD.
D-159

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2015 APPENDIX E PRE-OPERATIONAL RADIOLOGICAL MONITORING PROGRAM E-1

Donald C. Cook Nuclear Plant               Annual Radiological Environmental Operating Report 2015 Donald C. Cook Nuclear Plant Pre-Operational Radiological Monitoring Program Summary This appendix details information obtained during the conduct of a Pre-Operational Radiological Monitoring Program (PRMP) at the Donald C. Cook Nuclear Plant (CNP) from August 1971 until the initial criticality of Unit 1 on January 18, 1975. Program-related samples were analyzed by the Eberline Instrument Corporation and a summary of these results are presented below. This information was' utilized during the evaluation of CNP's 2015 Radiological Environmental Monitoring Program sample data and allowed for the comparison of current and historical information.
Air Samples:
Gross beta radioactivity in PRMP air particulate filters ranged from 0.01 to Q.17 pCi/m 3. from mid-1971 until mid-1973. In June of 1973 and 1974, the People's Republic of Chin.a detonated several nuclear devices in the atmosphere. As a result, PRMP gross beta radioactivity results up to 0.45 pCi/m 3 were documented with no statistically significant difference noted between indicator and control stations. By the end of the pre-operational period, gross beta values were approximately 0.06 pCi/m 3 .
Analysis of composited PRMP air particulate filters detected "trace amounts" of fission product radionuclides Ce-144, Ru-103, R\,l-106, Zr-95 and Nb-95. The presence of these radionuclides was attributed to atmospheric nuclear tests conducted previously. Be-7, a cosmogenic nuclide produced through cosmic ray spallation, was also identified during the analysis of these air particulate filters.
Direct Radiation:
Direct radiation (background) as measured by PRMP thermolominescent dosimeters ranged between 1.0 and 2.0 mrem per week.
Milk Samples:
Gamma ray spectroscopy of PRMP milk samples was conducted and naturally-occurring K-40 was detected in the range of 520 to 2310 pCi/liter. Cs-137 was detected in many milk samples following the atmospheric nuclear test discussed above. Cs-137 radioactivity ranged from 8 to 33 pCi/liter. 1-131 was noted in four milk samples collected on 719174 with values ranging from 0.2 to 0.9 pCi/liter.                              *
* Lake Water Samples:
PRMP -lake water samples collected were analyzed for tritium and by gamma .ray spectroscopy.
Tritium activities were below 1000 pCi/liter and typically averaged about 400 pCi/liter: No radionuclides were detected by gamma ray spectroscopy.
E-2

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 201 s*
Lake Sediment Samples:
PRMP lake sediment samples were analyzed by gamma ray spectroscopy and a natural abundance of Uranium, Thorium daughters and K-40 were detected. Traces of Cs:-137 were also noted (less than 0.1 pCi/gram) and attributed tc:i fallout.
Fish Samples:
PRMP Fish samples collected and analyzed by gamma, ray spectroscopy exhibited a natural abundance of K-40. Trace levels of Cs-137 present were attributed to fallout.
Drinking Water Samples:
Drinking water sampling and analysis was not performed as part of CNP's PRMP.
E-3

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2015 APPENDIX F NEl*GROUNDWATER PROTECTION INITIATIVE r- ..
r-1

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Analysis of the Sample Data The Groundwater Protection Initiative (GPI) Sample Data for 2015 indicates no groundwater contamination in excess of the reporting threshold of 2.00E-5 uCi/mL for tritium. Gamma spectroscopy was performed on all Radiological Environmental Monitoring Program wells quarterly. Those results are not actual GPI results so are not included in the Annual Radioactive Effluent Release Report (ARERR), but are part of CNP's 2015 Annual Radiological
. Environmental Operating Report. There were no positively identified radionuclides from plant effluents detected in any of the GPI well samples.
The LLD value used for tritium counting of the samples varied between 9.42E-7 and 9.63E-7 uCi/mL, depending on which scintillation counter was used. This is well below the required maximum LLD value of 2.00E-6 uCi/mL per the ODCM.
While no valid tritium values were found above LLD for 2015, values found above the LLD are not abnormal, unexpected, or inconsistent with past sampling history. The samples observed above LLD historically were expected results from the release of tritiated water into the Absorption Pond, a licensed pathway and part of plant design, or the result of recapture deposition of tritium from licensed radioactive gaseous release points. The 2015 results were expected considering the reduction in tritium released to the Absorption Pond and typical rainfall experienced.
Wells located inside the Protected Area of the plant are subject to recapture deposition of tritium and may show occasional sample results above LLD values following rainfalls and snow melt.
The results observed in 2015 continue to reflect normal expectations and behaviors as they relate to recaptured tritium for the weather conditions observed in 2015.
Two additional wells were installed in 2015, MW-28 and MW-29. These wells are shallow wells placed in close proximity to each Unit's Refueling Water Storage Tanks to improve leak detection capabilities. These wells are also closer to the Containment structures and plant ventilation stacks to better monitor recapture of tritium inside the Protected Area.
The sample data indicates that no radioactive spills or unidentified leaks have occurred in 2015 impacting groundwater. The sample results indicate proper well placement to ensure the protection of the groundwater and early identification of any abnormal conditions involving groundwater. This is validated by the demonstrated ability to monitor percolation from the Absorption Pond and recaptured tritium in precipitation, with flow direction and behavior acting as described in the plant licensing documents.
F-2

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 2015 GPI Sample Data Samples analyzed for tritium . Values noted are in microcuries per milliliter (uCi/mL)
Lower Limit of Detection = LLD Date          MW-        MW-                  MW-       MW-       MW-          MW-        MW-220        22M                  240       24M       248          250        25M 02/25/2015                                    <LLD      <LLD      <LLD         <LLD       <LLD 02/26/2015 <LLD          <LLD      <LLD 03/29/2015                                                                     <LLD       <LLD 04/01/2015 <LLD          <LLD      <LLD       <LLD      <LLD      <LLD         <LLD       <LLD 05/29/2015                                                                     <LLD       <LLD 05/30/2015                                    <LLD      <LLD      <LLD 05/31/2015 <LLD          <LLD      <LLD 06/24/2015                                    <LLD      <LLD      <LLD 06/25/2015                                                                     <LLD       <LLD 06/26/2015                         <LLD 07/04/2015                                    <LLD      <LLD      <LLD 07/29/2015 <LLD          <LLD      <LLD                                        <LLD       <LLD 08/28/2015                                    <LLD      <LLD      <LLD         <LLD       <LLD 09/14/2015 <LLD          <LLD      <LLD       <LLD      <LLD      <LLD         <LLD       <LLD 10/21/2015 10/23/2015 11/18/2015 11/20/2015 <LLD 12/14/2015 <LLD
                        -<LLD
                         <LLD
                                   <LLD
                                   <LLD
                                              <LLD
                                              <LLD
                                                        <LLD
                                                        <LLD
                                                                  <LLD
                                                                  <LLD
                                                                              <LLD
                                                                              <LLD
                                                                                          <LLD
                                                                                          <LLD 12/15/2015                                    <LLD      <LLD      <LLD                    <LLD (Note: Wells MW-22 through MW 27 are multi-port wells installed in the Fall of 2009, with three sample points placed at different depths. S= Shallow M= Middle D= Deep.)
(Note: A "*" symbol following a sample result denotes a gamma count was performed. Any gamma results above LLD will be additionally flagged and documented in the analysis section.)
F-3

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 2015 GPI Sample Data Samples analyzed for tritium . Values noted are in microcuries per milliliter (uCi/mL)
Lower Limit of Detection = LLD Date          MW-        MW-                  MW-       MW-        MW-         MW-255        260                  265       270       27M          275 02/25/2015    <LLD       <LLD      <LLD       <LLD      <LLD      <LLD         <LLD 02/26/2015                                                                                <LLD 03/29/2015    <LLD       <LLD      <LLD       <LLD      <LLD      <LLD         <LLD 04/01/2015    <LLD       <LLD      <LLD       <LLD      <LLD      <LLD         <LLD 04/06/2015                                                                                <LLD 05/26/2015                                              <LLD      <LLD         <LLD 05/29/2015    <LLD       <LLD      <LLD       <LLD 06/01/2015                                                                                <LLD 06/24/2015               <LLD      <LLD       <LLD      <LLD      <LLD         <LLD 06/25/2015    <LLD 07/08/2015                                                                                <LLD 07/29/2015    <LLD       <LLD      <LLD       <LLD      <LLD      <LLD 08/28/2015 10/21/2015 11/18/2015
              <LLD
              <LLD
              <LLD
                         <LLD
                         <LLD
                                   <LLD
                                   <LLD
                                   <LLD
                                              <LLD
                                                        <LLD
                                                        <LLD
                                                        <LLD
                                                                  <LLD
                                                                              <LLD
                                                                              <LLD       --
12/15/2015    <LLD       <LLD      <LLD       <LLD      <LLD      <LLD        <LLD (Note: Wells MW-22 through MW 27 are multi-port wells installed in the Fall of 2009, with three sample points placed at different depths. S= Shallow M= Middle D= Deep.)
(Note: A "*" symbol following a sample result denotes a gamma count was performed . Any gamma results above LLD will be additionally flagged and documented in the analysis section .)
F-4

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 2015 GPI Sample Data Samples analyzed for tritium. Values noted are in microcuries per milliliter (uCi/mL)
Lower Limit of Detection = LLD Date                               SG-4                           MW-20 01/16/2015    <LLD       <LLD      <LLD       <LLD                <LLD        <LLD 02/26/2015                                                        <LLD                   <LLD 04/15/2015 04/19/2015 04/24/2015 06/01/2015
                       --                               <LLD
                                                                  <LLD        <LLD 07/07/2015 07/10/2015 09/18/2015 10/05/2015
              <LLD
              <LLD
                         <LLD
                         <LLD
                                   <LLD
                                   <LLD
                                                                  <LLD
                                                                  <LLD
                                                                              <LLD
                                                                              <LLD      --
10/06/2015 11/24/2015 12/14/2015             ---                                        <LLD
                                                                  <LLD
                                                                  <LLD
                                                                              <LLD (Note: A "*" symbol following a sample result denotes a gamma count was performed . Any gamma results above LLD will be additionally flagged and documented in the analysis section .)
F-5

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 2015 GPI Sample Data Samples analyzed for tritium . Values noted are in microcuries per milliliter (uCi/mL)
                                                         =
Lower Limit of Detection LLD Date          W-9        W-10      W-11       W-12      W-13      W-14         W-15       OW-1 01/16/2015 01/19/2015 02/26/2015 04/06/2015
              <LLD
                         <LLD
                         <LLD
                                   <LLD
                                   <LLD
                                              <LLD
                                              <LLD
                                                        <LLD
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                                                                  <LLD
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                                                                               <LLD 04/14/2015 04/15/2015 04/19/2015    <LLD
                                   <LLD
                                              <LLD      <LLD      <LLD
                                                                               <LLD
                                                                                          <LLD 05/30/2015 05/31/2015 06/24/2015 06/26/2015 06/29/2015
                                                                  <LLD*
                                                                  <LLD
                                                                               <LLD
                                                                               <LLD
                                                                                          <LLD
                                                                                          <LLD*
07/07/2015               <LLD      <LLD       <LLD 07/08/2015 07/09/2015 07/10/2015 07/14/2015 07/29/2015
              <LLD
                         <LLD
                        --        -                     <LLD
                                                        <LLD
                                                                  <LLD
                                                                  <LLD
                                                                               <LLD
                                                                                          <LLD 09/14/2015                         <LLD       <LLD      <LLD      <LLD         <LLD 09/21/2015                                                                                <LLD 10/06/2015               <LLD      <LLD       <LLD 10/07/2015    <LLD                                      <LLD      <LLD         <LLD 10/2112015 11/20/2015 12/15/2015 (Note: A "*" symbol following a sample result denotes a gamma count was performed. Any
                                                                                          <LLD
                                                                                          <LLD gamma results above LLD will be additionally flagged and documented in the analysis section .)
F-6

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 2015 GPI Sample Data Samples analyzed for tritium. Values noted are in microcuries per milliliter (uCi/mL)
Lower Limit of Detection = LLD Date          W-1        W-2        W-3       W-4        W-5       W-6          W-7        W-8 01/16/2015                                                                      <LLD 01/19/2015 <LLD 01/20/2015 04/06/2015
                         <LLD
                                    <LLD
                                              <LLD
                                                         <LLD       <LLD
                                                                                           <LLD
                                                                                           <LLD 04/14/2015 04/15/2015 <LLD 04/16/2015 04/19/2015
                         <LLD      --- - -                                      <LLD
                                                                                           <LLD 04/24/2015 07/08/2015 07/09/2015 07/10/2015 <LLD 07/14/2015               <LLD
                                    <LLD
                                    <LLD
                                              <LLD
                                              <LLD
                                                         <LLD
                                                         <LLD
                                                                    <LLD
                                                                    <LLD     -- <LLD       <LLD 10/06/2015 <LLD                     <LLD 10/07/2015               <LLD                                                   <LLD       <LLD 10/14/2015                                    <LLD       <LLD      <LLD 12/15/2015
                        ---                                        <LLD (Note: A "*" symbol following a sample result denotes a gamma count was performed. Any gamma results above LLD will be additionally flagged and documented in the analysis section.)
On 10/20-22 of 2015, MW-28 and MW-29 were installed to monitor each unit's Refueling Water Storage Tank (RWST) for leaks to the groundwater.
Samples analyzed for tritium . Values noted are in microcuries per milliliter (uCi/mL)
Lower Limit of Detection= LLD Date          OW-4       MW-28      MW-29 07 /29/2015 <LLD
                        ---~~
09/21/2015 <LLD 10/21/2015 <LLD 10/23/2015 11/20/2015 <LLD 12/15/2015
              <LLD
                         <LLD (Note: A "*" symbol following a sample result de.notes a gamma count was performed. Any gamma results above LLD will be additionally flagged and documented in the analysis section .)
F-7

m INDIANA                                                                            Indiana Michigan Power MICHIGAN                                                                            Cook Nuclear Plant PCWaR*                                                                               One Cook Place Bridgman, Ml 49106 A unit ofAmerican Electric Power                                                     lndianaMichiganPower.com May 13, 2016                                                                    AEP-NRC-2016-40 10 CFR 50 , Appendix I 10 CFR 50.36a(a)(2)
Docket Nos.: 50-315 50-316 U.S. Nuclear Regulatory Commission ATTN : Document Control Desk Washington , D.C. 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT In accordance with Technical Specification 5.6.2, Indiana Michigan Power Company, the licensee for Donald C. Cook Nuclear Plant Units 1 and 2, is providing the Annual Radiological Environmental Operating Report as an enclosure to this letter. This report covers the period of January 1, 2015, through December 31, 2015.
This letter contains no new regulatory commitments.         Should you have any questions, please contact me at (269) 466-2649.
Michael K. Scarpello Manager, Regulatory Affairs DB/mll

==Enclosure:==
Annual Radiological Environmental Operating Report c:        R. J. Ancona , MPSC A. W . Dietrich , NRC, Washington , D.C.
MDEQ - RMD/RPS NRC Resident Inspector C. D. Pederson, NRC , Region Ill A. J. Williamson , AEP Ft. Wayne , w/o enclosure

Enclosure to AEP-NRC-2016-40 Annual Radiological Environmental Operating Report

Annual Radiological Environmental Operating Report Indiana Michigan Power Company Donald C. Cook Nuclear Plant RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM
/
January 1, 2015- December 31, 2015 Docket No. 50-315, 50-316 License No. DPR-58, DPR-74 AREVA Doc. 47-9254230-000 Donald c. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 TABLE OF CONTENTS 1.0    EXECUTIVE 

==SUMMARY==
 .................................................................... : ............................ 6

==2.0    INTRODUCTION==
 ......................................*............................................. :........................ ?
2.1    General Plant Site Information ...................... : ...................,. .................................. 7 2.2    Program De~igh ................................................................................................:... 7 2.3    Monitoring Zones ................................. ,............... :............................................... 8 2.4    Pathways Monitored .: .............................................................................. :............ 8 2.5    Descriptions of Monitoring Pathways ..................................................................... 8 2,5.1, Air .. .-.......................................................................................................... 9 2.5.2    Surfac;;e Water .......................................................................................... 9
             *2.5.3    Groundwater ............................................................ ~ ................................ 9 2.5.4    Drinking Water ......................................................................................... 9 2.5.5    Sediment. ............................................ :............................................... ;... 10.
2.5.6    Milk ........................ ,.,. ................ ,............................................................. 10 2.5~7    Fish ........................ :..*... ~*......................................................... .'...........*..... 10 2.5.8    Food Product. ...... ; .............................................................. ,.................... 10 2.5.9    Broadleaf Vegetation ....................................................-.... :..................... 10 2.5:10 TLD Monitoring ........................ :......................................................... ;..... 11 -
2.5.11 Additional Groundwater Sample Analysis (non-ODCM required) ............ 11 2.5.12 Additional Groundwater S~mple Analysis (NEI Groundwater Protection Initiative (GPI)) .................................................................................................... 11 2.6    Samples Analyzed During 2015 ..................................................................... '.._. .. 21 3.0    RADIOLOGICAL DATA 

==SUMMARY==
TABLES .................. ~ ................*............................. 22 4.0    ANALYSIS OF ENVIRONMENTAL RESULTS .............................................................. 51
     . 4.1    Sampling Program Deviations ............................................................................ 51 4.2    Comparison of Achieved LLD with Requirements .: ............................................ 52 4.3    Results Compare9 Agairist Reporting Levels ...................................................... 53 4.4    Data Analysis by Media Type - Discussion ........................... ; ........... :................53 4.4.1     Air Particulate .........................................................................................
                                                     .                                                    ~
53 4.4.2     Airborne lodine .................... :.................................................................. 56 Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 TABLE OF CONTENTS (Continued) 4.4.3    Groundwater (Well) ......................... :...................................................... 56 4.4.4    Drinking Water .................... *............. ,....................................................... 59 4.4.5    Surface Water ..............................*......................................................... 60 4.4.6     Sediment ................................................... ,:........................................... 60 1
4.4.7     Milk ................................ :................ :..................................... :..   ************** 61 4.4.8    Food Products & Vegetation .............. : ......................_.............................. 61 4.4.9     Fish ......................................................................................................:.. ,62 4.4.10 Gamma Exposure* Rate ............................................................................. 62 .
4.4.11 Additional Sample Analysis (non-ODCM required samples) ***************:***64 5.0    OFF-SITE DOSE EQUIVALENT COMMITMENTS .......... :....... : ..................................... 65.
6.0    

==SUMMARY==
OF REMP, ODCM, AND VENDOR PROCEDURE CHANGES .. : ................ 67

==7.0    REFERENCES==
 ...................... .'........ :............................................................................... 92 8.0    ERRATA* ........................... :........... :.................. ;............................................................. 92 APPENDIX A: SYNOPSIS OF ANALYSIS TECHNIQUES ..................................................... A-f APPENDIX B: 2015 LAND USE CENSUS ...................................................... :...... ,...... :........ B-1 APPENDIX C: QUALITYASSURANCE PROGRAM .............................................................. C-1 APPENDIX D: 2015 DATA 

==SUMMARY==
 .................................................................................. D-1.
APPENDIX E: PRE-OPERATIONAL RADIOLOGICAL MONITORING PROGRAM ............... E-1 APPENDIX F: NEI GROUNDWATER PROTECTION INITIATIVE ................ _: ......................... F-1 Donald C. Cook Nuclear Plant                               Annual Radiological Environmental Operating Report 2015 LIST OF TABLES Table 2.1 Sample Frequency & Type of Analysis Based on ODCM, Rev. 25, Attachment 3.19 and 12-THP-6010-RPP-636 Rev .. 5 .................................................................................... 12 Table 2.2 2015 Radiological Environmental Monitoring Program Sampling Types and Locations ......... ~ ................................................................................................................,....... 13 Table 2.3 Environmental Lower Limit of Detection (LLD) Sensitivity Requirements ODCM, Rev. 25, Attachment 3.20 .......................................................................................................... 16 Table 2.4 Reporting Levels for Radioactivity Concentrations in Environmental Samples
* ODCM Rev. 25, Attachment 3.21 .............................................................................................. 17 Table 2.5 REMP Samples Analyzed in 2015 ................... '.********:******************************** .............. 21 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January- December 2015) ...................................................................... 24 Table 3.2 2015 Environmental TLD Exposure Rate Measurements ........................................ 49 Table 3.3 2015 Environmental TLD Data Summary ................................................................ 50 Table 5.1      Cs-137 Concentrations in Fish Samples ........................................... : ...................... 65 Table 5.2 Cs-137 Concentrations in Broadleaf Samples ....................... ;................................. 66                                '-
Table 5.3 Summary of Off-Site Dose Commitments ................................................................. 66 Table 6.1 GEL Laboratories, LLC Updated Procedures for Support of Nuclear Power Plants Calendar Year 2015 ................................................................................................................... 84 Table C-1 2015 Inter- Laboratory Radiological Proficiency Testing Results and
* Acceptance Criteria ................................................................................................................, C-9 Table C-2 2015 Eckert & Ziegler Analytics Performance Evaluation Results ....................... C-23 Table C-3 REMP Intra-Laboratory Data Summary: Bias and Precision by Matrix ................ C-27 Table C-4 All Radiological Intra-Laboratory Data Summary: Bias and Precision by Matrix .. C-29 Table C-5 2015 Corrective Action Report Summary .................................................. : ......... C-36 Table C-6 Percentage ~f Individual Dosimeters That Passed EDC Internal Criteria January- December 2015 ..................................................................................................... C-41 Table C-7 Mean Dosimeter Analyses (N=6)                             January~         December 2015 ............................. C-42 Table C-8 Summary of Independent Blind Spike Dosimeter Testing January - December 2015 ... , ..... ,.......................................................................................................................... C-42 Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 LIST OF FIGURES Figure 2.1     Donald C. Cook Nuclear Plant Sampling Locations* - 1 Mile Radius ..................... 18 Figure 2.2 Donald C. Cook Nuclear Plant Sampling Locations - 10 Mile Radius .................... 19 Figure 2.3 Donald C. Cook Nuclear Plant Sampling Locations - 26 Mile Radius .................... 20 Figure 4.1 Mean Annual Gross Beta Concentration in Air Particulate Samples Collected over 10 Years ................ ,.......................................................................................................... 55 Figure 4.2 Mean Monthly Gross Beta Concentration in Air Particulate Samples Collected in 2015 ............................... :......................................................................................................... 56 Figure 4.3 Tritium Detected in Groundwater Over the Past 10 Years ...................................... 58 Figure 4.4 Tritium Detected in Groundwater Over the Past 10 Years ...................................... 58 Figure 4.5 Tritium Detected in Drinking Water Over the P~st 12 Years .......... :..................... , .. 60 Figure 4.6 Direct Radiation - Quarterly TLD Results ............................................................... 63 Figure 4.7 Direct Radiation, Annual Summary Ten Years Historical Trend ............................. 64 Donald C. Cook N'uclear Plant               Annual Radiological Environmental Operating Report 2015 1.0    EXECUTIVE 

==SUMMARY==

Implementation of the Donald C. Cook Nuclear Plant (CNP) Radiological Environmental Monitoring Program (REMP) continued during the period January through December 2015, in accordance with station Technical Specifications and the Off-Site Dose
* Calculation Manual (ODCM).
Radiochemical and radiometric analyses of REMP samples were performed to allow for detection and quantification of station-related radioactivity. A variety of potential exposure pathways were monitored by analyzing air, fruit, vegetation, water, fish, and sediment samples. Thermoluminescent dosimeters (TLDs) were also utilized to monitor for g~mma radiation exposure that might be attributed to plant activities.
Evaluation of sample analysis results considered the variability of natural or man-made radioactivity sources including their distribution and uptake in the environmental media.
This variability depends on several possible factors such as:
* contributions from cosn;ogenic radioactivity,
* groundwater dynamics,
* station related reJease rates,
* past spatial variability of radioactive fallout from nuclear weapons tests, other nuclear events (e.g. Fukushima, Chernobyl), and the on-going redistribution of this fallout,
       *       . soil characteristics,
* farming practice_s, and
* feed type .
Since these factors had the potential to cause considerable variation in sample analysis results; they were considered during the evaluation of sample analysis results.
Based on an evaluation of sample analysis results, it was determined that non-tritium radioactivity detected by the REMP was from outside sources, such as fallout from nuclear weapons tests, external nuclear events c;inc;f naturally-occurring radionuclides..
Examples include the following:
* All four of the lake sediment samples contained naturally-occurring K-40 and three samples contained Th-228. Two samples contained naturally-occurring Ac-228.           .     .                                                    .
* Naturally-occurring K-40 was detected in all eight REMP fish samples and trace levels of Cs-137 were observed in the three indicator and two control stations.
Both non-REMP fish samples detected naturally occurring K-40 and one non-REMP fish sample detected trace levels of Cs-137.
* Both indicator and control . food products samples (grapes) contained
              . naturally-occurring K-40 and Be-7. All samples of broadleaf vegetation contained naturally-occurring K-40 and Be-7. dne indicator sample contained naturally Donald C. Cook Nuclear Plant                Annual Radiological Environmental Operating Report 2015 occurring Th-228. Additionally, three of twenty-four indicator samples contained low levels of Cs-137.
* Three of 138 water samples (drinking, ground, and surface) indicated the presence of naturally-occurring K-40. Three samples also detected the presence of Th-228. Tritium was riot detected in any of the 82 water samples.
* The quarterly composite of the air particulate samples all contained naturally-occurririg Be-7. One control sample contained K-40, and one indicator sample contained Th-228.
No sample analysis results exceeded or approached specified reporting levels.
This report was prepared for Indiana Michigan Power Company by AREVA Inc. Sample collection and preparation was performed by CNP. Laboratory analyses were performed by GEL Laboratories, LLC (GEL). TLD *analyses were performed by Environmental Dosimetry Company.

==2.0     INTRODUCTION==
* 2.1     General Plant Site Information Indiana Michigan Power Company's CNP is located on the southeastern shore of Lake Michigan* approximately one mile north of Bridgman, Michigan. The site consists of two pressurized water reactors: Unit 1, 1084 MWe (Net Design Electrical Rating) and Unit 2, 1107 MWe (Net Design Electrical Rating). Unit 1 achieved initial criticality on January 18, 1975, and Unit 2 on March 10, 1978.
The Independent Spent Fuel Storage Installation (ISFSI) impacts are included with Unit 1 and Unit 2 statistics. The ISFSI cask system does not create any radioactive materials or have any radioactive waste treatment systems.
Therefore, specific operating procedures for the control of radioactive effluents are not required. Certificate of Compliance No. 1014 Appendix A, Specification 3.1. 1, Multi-Purpose Canister, provides assurance that there are no radioactive effluents from the ISFSI.
2.2      Program Design The REMP for CNP was designed with specific objectives:
To provide an early indication of the appearance or accumulation of radioactive material in the environment possibly caused by CNP activities.
To provide assurance to regulatory agencies and the public that the environmental/dose impact of the CNP operation is known and within anticipated limits.
                        -To verify the adequacy and proper functioning of station effluent controls and monitoring systems.
To comply with regulatory requirements and station Technical Specifications and provide records to document compliance.
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Radioactivity in the Environs of Nuclear Power Plants"; NRC Regulatory Guide 4.8, "Environmental Technical Specifications for Nuclear Power Plants"; the NRC Branch Technical Position of November 1979, "An Acceptable Radiological Environmental Monitoring Program"; and NRC NUREG-0472, "Standard Radiological Effluent Technical Specifications for Pressurized Water Reactors."
The REMP sampling requirements are given in Attachment 3.19, "Radiological Environmental Monitoring Program Sample Stations, Sample Types, Sample Frequencies," of the ODCM and summarized in Table 2.1 of this report. The identification of the required* sampling locations is also provided in Attachment 3.19 of the ODCM and Table 2.2 of this report. The monitoring locations are shown graphically in Figures 2.1 - 2.3.
2.3    Monitoring Zones The REMP is designed to allow comparison of levels of radioactivity in samples from the area potentially influenced by the plant to levels found in areas not influenced by the plant.       Generally, monitoring zones are designated as "indicator" or "control" locations. For a particular* pathway, the distinction between these designations is based on relative direction and distance from the plant. Sample analysis data from the two zones is evaluated and used to differentiate between radiation due to plant activities and that due to other sources (examples: nuclear weapons test fallout, external nuclear events, medical related tests and seasonal background variations).
2.4    Pathways Monitored Four pathway categories (airborne, waterborne, ingestion, and direct radiation) were monitored by the REMP. Each *of these. categories was monitored by the collection of one or more sample types listed and described below.
Airborne Pathway:              Air Waterborne Pathway:            Surface Water Groundwater Drinking Water Sediment Ingestion Pathway:             Milk (if available)
Fish Food Product (Fruit and Broadleaf Vegetation)
Broadleaf Vegetation (in lieu of Milk !:Ind garden census)
Direct Radiation:              TLD Monitoring 2.5     Descriptions of Monitoring Pathways S~mple types and frequency of analysis are given in Table 2.1. The sample
            . locations are listed in Table 2.2 and shown in Figures 2.1 - 2.3. The program as described in this* report includes both ODCM required and additional or supplemental samples. A description of the ODCM sampling program follows, Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 and a detailed summary of the analytical methodologies employed by GEL Laboratories is provided in Appendix A.
2.5.1   Air Air samplers were installed at ten locations as required* by the ODCM.
These samplers operated continuously (except during weekly sample media replacement) within the specified sample flow rate range of 42 to 70 liters per minute (LPM). An Automatic Volume Totalizer was used to measure the total volume of air sampled, total unit run time and volumetric flow rate.
Airborne particulates were collected by passing air through a 47-mm particulate filter. Charcoal cartridges were installed downstream of the particulate filters and Were used to collect airbo*rne radioiodine. Both types of sample media were collected weekly, arid to allow for the decay of radon daughter products, the particulate filters were held at least 100 hours before being analyzed for gross-beta radioactivity.
The pa.rticulate filters were composited by location as part of the quarterly gamma spectroscopy analysis.
2.5.2 . Surface*water
                    *Two 500-ml surface water samples were collected from shoreline locations approximately 500 feet. north and south of the plant centerline.
Samples. were composited daily, and the gamma aliquot*was preserved with nitric acid. A gamma .isotopic analysis was performed on a monthly composite from each sample point. A tritium analysis was performed on a quarterly comp.osite from each sample point.
* 2.5.3    Groundwater i
                     .Groundwater samples were collected quarterly from 1 wells, all within 4300 feet of the reactors. At each well, a static water elevation was determined and at least three well bore volumes were purged from the
                  '  well using a groundwater pump or equivalent. Two 1-liter and two 125-ml samples were then collected and* *the gamma isotopic *aliquot was preserved with nitric acid. Gamma isotopic and tritium analyses were perfor~ed.              *
* 2.5.4    Drinking Water One-liter samples were collected daily at* the intake of the water.
purification plants for St. Joseph and Lake Township. The daily samples were composited over 14 days and the gamma isotopic/gross beta aliquot was preserved with nitric acid. The 14-day composite samples were*
analyzed for' gross beta, gamma isotopic and low level Iodine (1-131). A quarterly composite was analyzed for Tritium (H-3).         -
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating,Report 2015 2.5.5   Sediment Lake Michigan shoreline sediment samples were collected semi-annually approximately 500 feet north and south of the plant centerline. A one-liter sample was collected from an area covered part time by wave action at each location. The sediment samples were analyzed for gamma isotopic content.
2.5.6   Milk Due to the retirement of several milk farms, the required number of indicator milk locations was not met in 2015. The milk sampling program has been considered suspended since 2010. Environmental personnel implemented broadleaf vegetation collection per the ODCM during the growing season as* a result of not meeting the required number of milk indicator farms.*
2.5.7   Fish
                    . Approximately four pounds of fish were collected twice this year from four locations using gill nets in Lake Michigan. The edible portions of the fish were analyzed for gamma-emitting radionuclides.
In addition to the ODCM required bi-annual fish samples, a once-a-year sampling for fish species important to sport fishing in Lake Michigan (trout, salmon, and perch) was initiated in 2011 and continued through 2015. The same analysis is performed for the sport fish samples as that performed for the original REMP fish samples.
2.5.8    Food Product Two food product samples (grapes) were collected annually at. the time of harvest. Samples consist of greater than 300 grams of media and were collected from the highest deposition factor land sectors near CNP, with media present, .and at an approximate distance of 20 miles from the plant in one of the less prevalent deposition factor land sectors. Samples were analyzed for gamma-emitting radionuclides.
2.5.9    Broadleaf Vegetation Broadleaf vegetation sampling in lieu of milk collection was reinstated on December 16, 2004, and continued through 2015 during the growing season (June - October, when available). Three samples *consisting of greater than 300 grams of media were_ collected from two different locations within 8 miles of the plant in the highest deposition factor land sectors with media present, and one sample at an approximate distance of 20 miles from the plant in one of the less prevalent deposition factor land sectors. Samples were analyzed for gamma-emitting radionuclides and low level 1-131'.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 2.5.10 TLD Monitoring Direct gamma radiation exposure was continuously monitored with the use of Panasonic UD-814 AS4 TLDs. TLDs were posted at 27 locations in the environs surrounding CNP and replaced quarterly.
2.5.11 Additional Groundwater Sample Analysis (non-ODCM required)
During 2015, additional groundwater samples not required by the OOCM were collected for informational purposes. These samples were collected at several onsite locations in 2015 and analyzed for gamma, tritium, gross beta and gross alpha, by GEL laboratories.
2.5.12 Additional Groundwater Sample Analysis (NEI Groundwater Protection Initiative (GPI))
During 2015, additional groundwater samples not required by the ODCM were collected for informational purposes. These samples were collected at several onsite locations in 2015 and analyzed for tritium by CNP.
The full discussion of the GPI sample data and analysis is contained in Appendix F.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 2.1 Sampling Frequency & Type of Analysis Based on ODCM, Rev. 25, Attachment 3.19 and 12-THP-6010-RPP-636 Rev. 5 Sampling &
Exposure Pathway Number of Collection              Type of Analysis and/or Sample      Locations Frequency Gamma Exposure-
: 1.                           27            Quarterly     Direct Radiation - Quarterly Environmental TLD Continuous     Gross Beta and 1-131 - Weekly
: 2. Airborne                  10       sampler - weekly   Gamma Isotopic - Quarterly on filter change   composite (by location)
Groundwater                                           Gamma Isotopic and Tritium -
: 3.                           17            Quarterly (Well Water)                                          Quarterly Gamma Isotopic - Monthly on Once per calendar
: 4. Surface Water              2                          composite day Tritium *_ Quarterly on composite Gamma Isotopic, Gross Beta Once per calendar   and 1-131 Low Level (LL) - on
: 5. Drinking Water             2 day        14 day composite. Tritium -:-
Quarterly on composite Sediment
: 6.                             2        Semiannually      Gamma Isotopic Lake Once every 15 Milk                              days or Monthly if  Gamma Isotopic.and 1-131 Low
: 7.                            4.
(if available)                     animals are fed    Level (LL) :-- per sample stored feed.
: 8. Fish (edible portion)     4            2 per year     Gamma Isotopic - per sample
: 9. Fish (edible portion)      2           1 per year     Gamma Isotopic - per sample Food Products-
: 10.                            2      At time of harvest  Gamma Isotopic - per sample Grape Broad leaf Monthly when      Gamma Isotopic and 1-131 Low
: 11. Vegetation - (in lieu      3 available     Level (LL) - per sample of milk sampling)
Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Table 2.2 2015 Radiological Environmental Monitoring Program Sampling Types and Locations Exposure Pathway Sample       Indicator/
(Sample Type                                              Location Description Station       Control Designation)
Airborne
: a. Filter (AP I CF)     ONS-1                 I       1945 feet @ 18&deg; from Plant axis ONS-2                 I       2338 feet @ 48&deg; from Plant axis ONS-3                 I       2407 feet @ 90&deg; from Plant axis ONS-4                 I       1852 feet @ 118&deg; from Plant axis ONS-5                 I       1895 feet @ 189&deg; from Plant axis ONS-6                 I       1917 feet @ 210&deg; from Plant axis NBF                  c        15.6 miles SSW - New Buffalo, Ml SBN                  c        26.2 miles SE - South Bend, IN DOW                  c        24.3 miles ENE - Dowagiac, Ml COL                  c        18.9 miles NNE - Coloma, Ml Waterborne
: a. Ground Well (WG)     W-1                           1969 feet @ 11&deg; from Plant axis W-2                           2302 feet @ 63&deg; from Plant axis W-3                           3279 feet @ 107&deg; from Plant axis W-4                           418 feet @ 301&deg; from Plant axis W-5                           404 feet@ 290&deg; from Plant axis W-6                           424 feet @ 273&deg; from Plant axis W-7                           1895 feet @ 189&deg; from Plant axis W-8                           1274 feet @ 54&deg; from Plant axis W-9                           1447 feet@ 22&deg; from Plant axis W-10                          4216 feet @ 129&deg; from Plant axis W-11                          3206 feet @ 153&deg; from Plant axis W-12                          2631 feet@ 162&deg; from Plant axis W-13                          2152 feet @ 182&deg; from Plant axis W-14                          1780 feet @ 164&deg; from Plant axis W-15                          725 feet @ 202 &deg; from Plant axis (MW-12c)
W-16                  I       2200 feet @ 208 &deg; from Plant axis (MW-20)
W-17                  I       2200 feet @ 180 &deg; from Plant axis (MW-21)
: b. Drinking (WD)        STJ                  c        9 miles NE - St. Joseph Public Intake Station LTW                   I       0.6 mile S - Lake Twp. Public Intake Station Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Exposure Pathway Sample         Indicator/
(Sample.Type                                                   Location Description Station         Control Designation)
: c. Surface (V'.JS)         SWL-2                           500 feet S of Plant Centerline - Site I
Boundary SWL-3                     I      500 feet N of Plant Centerline - Site Boundary
: d. Sediment (SE)          SL-2                             500 feet S of Plant Centerline - Site I
Boundary SL-3                     I       500 feet N of Plant Centerline*- Site Boundary Ingestion
: a. Milk (TM)              None                     I       None available None                     I       None available None                     I       None available None                     c       None available
: b. Fish (FH)              ONS-N                    I       0.3 mile N, Lake Michigan ONS-S                    I       0.4 mile S, Lake Michigan Trout and salmon within 20 miles of TRT/SLM*                 I CNP, Lake Michigan Perch within 10 miles of CNP, Lake PRCH*                    I Michigan OFS-N                    c       3.5 miles N, Lake MichiQan OFS-S                    c       5.0 miles S, Lake MichiQan
: c. Food Products          ONS-G                    I       Nearest sample to Plant in the (TF) **                                                highest D/Q land sector containing grapes.
OFS-G                    c       In a land sector containing grapes,
                                                            -20 miles from the Plant, *in one of the less prevalent D/Q land Sectors
: d. Vegetation (TV)        ONS1-V                  -I       3 samples of different kinds of
[broadleaf vegetation     ONS2-V                   I       broadleaf vegetation collected at the taken in lieu of milk                                      site boundary, within 5 mi. of the plant or garden census ]                                        in each of two different sectors with ONS3-V                   I
 **                                                         the highest annual average D/Q containing media.
OFS1-V                  c        1 Background sample of similar OFS2-V                  c        vegetation grown 10-20 miles distant in one of the less prevalent wind directions.
* Samples not listed in ODCM Attachment 3.19
         ** See Figures 2.1, 2.2, and 2.3 for exact locations for 2015 Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 2.2 2015 Radiological Environmental Monitoring Program Sampling Types and Locations (Continued)
Exposure Pathway Sample (Sample Type                        Location Description Station Designation)
Direct Radiation
: a. TLD          T-1       1945 feet @ 18&deg; from Plant axis T-2      2338 feet @ 48&deg; from Plant axis T-3      2407 feet @ 90&deg; from Plant axis T-4       1852 feet @ 118&deg; from Plant axis T-5       1895 feet @ 189&deg; from Plant axis T-6       1917 feet @210&deg; from Plant axis T-7      2103 feet@ 36&deg; from Plant axis T-8      2208 feet @ 82&deg; from Plant axis T-9       1368 feet @ 149&deg; from Plant axis T-10      1390 feet@ 127&deg; from Plant axis T-11      1969 feet @ 11&deg; from Plant axis T-12     2292 feet @ 63&deg; from Plant axis NBF       15.6 miles SSW - New Buffalo, Ml SBN      26.2 miles SE - South Bend, IN DOW      24.3 miles ENE - Dowagiac, Ml COL       18.9 miles NNE - Coloma, Ml OFT-1    4.5 miles NE - Pole #B294-44 OFT-2    3.6 miles NE - Stevensville Substation OFT-3     5.1 miles NE - Pole #B296-13 OFT-4    4.1 miles E - Pole #B350-72 OFT-5    4.2 miles ESE - Pole #B387-32 OFT-6    4.9 miles SE - Pole #B426-1 OFT-7    2.5 miles S - Bridgman Substation OFT-8    4.0 miles S - Pole #B424-20 OFT-9    4.4 miles ESE - Pole #B369-214 OFT-10   3.8 miles S - Pole #B422-99 OFT-11   3.8 miles S - Pole #B423-12 Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 2.3 Environmental Lower Limit of Detection (LLD) Sensitivity Requirements ODCM, Rev. 25, Attachment 3.20 Food Prod.      Water                                  Fish        Sediment Milk      Air Filter Analysis      (pCi/kg,      (pCi/L)                              (pCi/kg,       (pCi/kg, (pCi/L)     (pCi/m 3 )
wet)                                               wet)           dry)
Gross Beta                     4                      0.01 H-3                       2000 Mn-54                       15                                   130 Co-58                       15                                   130 Co-60                       15                                   130 Fe-59                       30                                   260 Zn-65                       30                                   260 Zr-95                       30 Nb-95                       15 1-131          60            1           1          0.07 Cs-134          60           15          15          0.06         130            150 Cs-137          60           18          18          0.06         150            180 Ba-140                       60          60 La-140                       15          15 Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Table 2.4 Reporting Levels for Radioactivity Concentrations in Environmental Samples ODCM Rev. 25, Attachment 3.21 Food Prod.      Water                         Airborne          Fish Milk Analysis        (pCi/kg,       (pCi/L)                          Filter       (pCi/kg, (pCi/L) wet)                                        (pCi/m 3 )       wet)
H-3                          20000 Mn-54                          1000                                         30000 Co-58                          1000                                         30000 Co-60                          300                                          10000 Fe-59                          400                                          10000 Zn-65                          300                                          20000 Zr-95                          400 Nb-95                          400 1-131            100.            2               3            0.90 Cs-134           1000            30              60             10            1000 Cs-137           2000            50              70             20            2000 Ba-140                          200             300 La-140                          200             300 Donald C. Cook Nuclear Plant                Annual Radiological Environmental Operating Report 2015 Figure 2.1 Donald C. Cook Nuclear Plant Sampling Locations - 1 Mile Radius (See Table 2.2 for information on sampling locations) 1 mile er Plant (DCCNPP)
    +
E9
* Broadleaf
                                                                           -10
                                                                        + "'\ *"'' . ~
             '"LTWINTAKE 0                                                         1 Mile Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Figure 2.2 Donald C. Cook Nuclear Plant Sampling Locations -10 Mile Radius (See Table 2.2 for information on sampling locations) 1/ -* ..*
                                                                                                        "it JoM-p
                                                                                                                          ;>    tlllrl:#
                                                                                                                                               ~
l
                                                                                                                                                                \
STJ INTAKE.             e ST                                       ~
t Vi t              ~
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                                                                                                                                                                 'll ii       .i        ' ,,f~                                        r
                                                                                                                                                            ! ~ i Legend S.t f01f1*h
* I'
       ~    Bro.dleaf and Food Products
                                                                                                             . ~
                                                                                                             ~       i         hp u
                                                                                                                                                                      ~
                                                                                                  ~
* DC Cook Nuclear Power Plant (DCCNPP)
* TLD e    Drinking Water X    Fish OFS-N Lake Michigan x
OFT-3 WJor.t Beei> Rt1 S lt"Vt*n\\'il l'!'
                                                  .'*'HI See 1-mlle Radius Map for Detal OFT_.
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                                                               --                                                  3                     4 .                       5
                                                                                                                                                                    *Miles
                                                               -1 9-

Donald C. Cook Nuclear Plant                                        Annual Radiological Environmental Operating Report 2015 Figure 2.3 Donald C. Cook Nuclear Plant Sampling Locations - 26 Mile Radius (See Table 2.2 for information on sampling locations)
                                                                                              "*1       Oe.*11
                                                                                                '*"' r...,
                                                                                                     ~44,~
It. Broadleaf and Food Products
* Air/TLD
* DC Cook Nuclear Power Plant (DCCNPP) tt .. tklJ i
See 10-mile Radius Map for D:~~\ ---...
Lake Michigan f;    ,.
W>11m 1 DOW "'
                                                                                                                                    *~r: ~
                                                                                     *~....
cu I
                      \
                        \
                                          * ~ WOfl OFS-G fNll l AN.\ t OFS2-V
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                 **~
w~                                      "''kHl\ IT""
p 2.5 5                                                                   30
    -                                                                                             20                   ' 25 Miles Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report'2015 2.6     Samples Analyzed During 2015 Table 2.5 below summarizes the number of samples of each type analyzed during the 2015 reporting period and the number of analyses by station type for each media. A more detailed breakdown of the various analyses performed is provided in the data summary tables in Section 3, Table 3.1.
Table 2.5 REMP Samples Analyzed in 2015 Number of REMP Samples Sample Type Total                 Indicator         Control Gamma Exposure 108                      92                16 Environmental TLD Air Particulate            52'0                    312    -          208 Charcoal Filter            520                     312               208 Groundwater                68                      68                 0 Surface Water                18                     18                 0 Drinking Water              52                     26                 26 Sediment (Lake)               4                      4                  0 Food Products 2                       1                 1 (grapes)
Vegetation 28                     24                 4 (broad leaf)
Milk*                   0                      0                  0 Fish                   8                      4                 4 Total All Types            1,328                   861               467
* No milk sampling locations were available.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 3.0    RADIOLOGICAL DATA 

==SUMMARY==
TABLES This section summarizes the analytical results of the environmental samples that were collected during 2015. These results, shown in Table 3.1, are presented in a format similar to that prescribed in the NRC's Radiological Assessment Branch Technical Position on Environmental Monitoring (Reference 1). The results are ordered by sample media type and then by- radionuclide for the monitoring zones described in Section 2.3. The units for each media type are also given. A summary of the data from TLD' direct radiation measurements is provided in Table 3.2. The complete listing of quarterly TLD data is provided in Table 3.3.
The left-most column of Table 3.1 contains the radionuclide of interest, the total number of analyses for that radionuclide in 2015, and the number of measurements that exceeded the Reporting Levels found in Table 2.4. The latter are classified as "Non-routine" measurements. The second column lists the required Lower Limit of Detection (LLD) for those radionuclides that have detection\capability requirements specifie6 in Table 2.3 ..
The absence of a value in this column indicates that no LLD is specified in the ODCM for that ra<;lionuclide in that media.
For each media type and radionuclide, the remaining three columns summarize the data for the following categories of monitoring locations: (1) the Indicator stations, which were.
within the range of influence of the plant and which could be affected by plant activities; (2) the station which had the highest m~an concentration during 2015, and (3) the Control stations, which were beyond the influence of the plant. Direct radiation monitoring stations (using TLDs) were grouped into onsite and offsite stations. These are shown in Table 3.2.
      -In each of these columns, for each radionudide, the following are given:
* The n;iean value of all concentrations including negative values and values that were not considered "detectable",
* The lowest and highest concentration.
* The number of detectable measurements divided by the total number of measurements.
A sample was considered a "detectable measurement" when the concentration exceeded its associated minimum detectable concentration (MDC). The standard deviation on each m'easurenient represents only the random.* uncertainty associated with the radioactive decay process (counting statistics), and not the propagation of all possible uncertainties in the analytical procedure.
The radionuclides reported in this section represent those that: (1) had an LLD requirement in Attachment 3.20 or a' Reporting Level listed in Attachment 3.21 of the ODCM, (2) had a positive measurement of radioactivity, whether it was naturally-occurring or man-made, or (3) were of specific* interest for any other reason. The radionuclides that were routinely analyzed and reported by GEL Laboratory in a gamma spectroscopy analysis were Ac-228, Th-228, Ag-108m, Ag-110m, Ba-140; La-140, Be-7, Ce-141, Ce-144, Co-57, Co-58, Co-60, Cr-51, Cs-134, Cs-1&deg;37,
* Fe-59 1 1-131, K-40, Mn-54, Ru-103, Ru-106, Sb-124, Sb-125, Se-75, Zn-65, Zr-95 and Nb-95.
GEL Laboratories has been analyzing CNP's environmental samples since June 2010, when the AREVA Environmental Laboratory (ELAB) discontinued operations. During this Donald C. Cook Nuclear Plant
* Annual Radiological Environmental Operating Report 2015 transitional period there were slight differences in how the labs treated the measurement data. The main differences were the treatment of the Th-232 decay series, the Ba-140 decay series, and the Zr-95 decay series. Where the AREVA ELAB used one daughter radionuclide to infer the decay series, GEL Labs measures each of the radionuclides independently. Both analysis methods meet or exceed the reporting requirements, as detailed in the ODCM. One other important difference between the laboratories' analysis methods is the determination of a statistically significant positive concentration. The AREVA ELAB had historically flagged concentrations above three times the uncertainty in*
the measurement, or 3cr. GEL Labs maintains a check on concentrations above the MDC.
Donald C. Cook Nuclear Plant                       Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Air Particulates (AP)               UNITS: pCi/cubic meter Indicator Stations                        Station With Highest Mean           Control Stations Radionuclides              Mean***                        Station           Mean***                      Mean***
(No. Analyses)    Required Range                                            Range                        Range Non-Routine*        LLD    No. Detected**                                   No. Detected**               No. Detected**
BETA        (520)  0.01          2. 9E -2                 ONS*5                  2.9E -2                       2.8E -2 (0)                  1.2 - 6.l)E -2                                  1.2 - 5.8)E -2                1.2 - 6.l)E -2 (312/ 3'12)                                       (52/ 52)                    (208/ 208)
Be-7       (40)                  1.2E -1                  NBF                    1. 2E -1                      1. lE -1 (0)                   8.2 - 14.l)E -2                                 9.9 - 15.0)E -2               8.4 - 15.0)E -2 (24/ 24)                                        . (4/ 4)                      (16/ 16)
K-40       (40)                  1. 3E -3                 NBF                    2.2E -3                       1. 6E -3 (0)                 -1.7 - 4.2)E -3                                 -2.1 - 60.2)E -4              -3.0 - 6.0)E -3 (0/ 24)                                          (1/ 4)                       (1/ 16)
Cr-51      (40)                  1.2E -3                  ONS-5                  5.7E -3                     -3.6E -4 (0)                 -3.5 - 3.8)E -2                                 -1.4 - 3.8)E -2               -2.4 - 1.9)E -2 (0/ 24)                                          (0/ 4)                       (0/ 16)
Mn-54      (40)                -3.8E -5                   NBF                    1.0E -4                     -3.3E -5 (0)                 -1.9 - 1.S)E -4                                 -4.9 - 22.l)E -5              -7.0 - 2.2)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Co-57      (40)                 1. SE -5                  ONS-2                  1.lE -4                       O.OE 0 (0)                 -1.1 - 2.3)E -4                                   2.6 - 17.l)E -5             -1.8 - 1.S)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Co-58      (40)                -1. 6E -5                  ONS-4                  3.6E -4                     -9.4E -5 (0)                 -8.0 - 5.6)E -4                                   2.8 - 561.0)E -6            -5.1 - 5.2)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Fe-59      (40)                -2.7E -4                   ONS*1                  6.0E -4                     -2.6E -4 (0)                 -1.5 - 1.4)E -3                                   8.3 - 143.0)E -5            -3.4 - 2.S)E -3 (0/ 24)                                          (0/ 4)                       (0/ 16)
Co-60      (40)                 1. OE -5                  COL                    9.9E -5                       O.OE 0
(~)                 -2.1 - 3.S)E -4                                   2.8 - 236.0)E -6            -3.0 - 2.4)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Zn-65      (40)                  O.OE 0                   ONS-2                  2.lE -4                     -2.6E -4 (0)                 -4.9 - 5.8)E -4                                 -4.7 - 58.0)E -5              -1.3 - 0.7)E -3 (0/ 24)                                          (0/ 4)                       (0/ 16)
Se-75      (40)                 2.7E -5                   ONS-6                  l.SE -4                     -1.lE -4 (0)                 -3.2 - 3.S)E -4                                 -9.3 - 35.0)E -5              -6.3 - 2.2)E -4 (0/ 24)                                          (0/ 4)                       (0/ 16)
Nb-95      (40)                 1.4E -4                   ONS*5                  2.6E -4                     -1. 6E -4 (0)                 -4.4 - 5.S)E -4                                 -1.5 - 5.2)E -4               -1.2 - 0.8)E -3 (0/ 24)                                          (0/ 4)                       (0/ 16)
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Air Particulates (AP)                 UNITS: pCi/cubic meter Indicator Stations                         Station With Highest Mean             Control Stations Radionuclides            Mean***                         Station            Mean***                       Mean***
(No. Analyses)  Required Range                                              Range                         Range Non-Routine*      LLD    No. Detected**                                     No. Detected**                No. Detected**
Zr-95      (40)                1.3E -4                   NBF                     9.1E -4                        4.2E -4 (0)               -1.2 - 1.8)E -3                                     1. 9 - 17.7)E -4             -6.8 - 17.7)E -4 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ru-103     (40)                9.2E -5                  *DOW                     8.7E -4                        2.9E -4 (0)               -9.5 - 16.0)E -4                                  -1.4 - 21. 4)E -4              -1.5 - 2.1)E -3 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ru-106     (40)              -8.6E -5                    ONS*6                   5.4E -4                      -3.0E -4 (0)               -3.0 - 2.0)E -3                                   -2.6 - 12.4)E -4               -4.0 - 1.5)E -3 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ag-108m    (40)                1. 7E -5                  ONS*~                   9.8E -5                      -1.8E -5 (0)               -1.3 - 2.2)E -4                                   -4.1 - 19.7)E -5               -1.4 - 1.1)E -4 (0/ 24)                                            (0/ 4)                        (0/ 16)
Ag-110m    (40)              -3.5E -5                    DOW                     1.0E -4                      -3.4E -5 (0)               -4.2 - 3.8)E -4                                   -2.2 - 3.1)E -4                -4.8 - 3.1)E -4 (0/ 24)                                            (0/ 4)                        (0/ 16)
Sb-124     (40)                9.8E -5                   ONS-4                   2.1E -4                      -4.6E -5 (0)               -1.3 - 2.2)E -3                                   -4.0 - 8.7)E -4                -1.5 - 1.6)E -3 (0/ 24)                                            (0/ 4)                        (0/ 16)
Sb-125     (40)               1.5E -5                    SBN                     1.9E -4                      -3.4E -5 (0)            (. -3.9 - 3.7)E -4                                   -1.1 - 7.0)E -4                -7.6 - 7.0)E -4 (0/ 24)                                             (0/ 4)                        (0/ 16) 1-131      (40)               1.3E 0                     ONS*6                   1. 6E 1                        8.7E -1 (0)               -3.1 - 6.2)E 1                                    -8.3 - 6200,0)E -2             -2.9 - 4.6)E 1 (0/ 24)                                            (0/ 4)                        (0/ 16)
Cs-134     (40)  0.06          O.OE 0                    SBN                     1. 7E -4                       8.7E -5 (0)               -.4.2 - 2.8)E -4                                  -2.6 - 50.5)E -5               -2.4 - 5.1)E -4 (0/ 24)                                             (0/ 4)                        (0/ 16)
Cs-137     (40)  0.06          O.OE 0                    ONS-1                   6.4E -5                        2.7E -5 (0)               -1. 9 - 2.7)E -4                                  -1.3 - 2.7)E -4                -1.4 - 2.3)E -4 (0/ 24)                                             (0/ 4)                       (0/ 16)
Ba-140     (40)                6.4E -2                   ONS-4                   3.2E -1                      -3.7E -1 (0)               -1.1 - 1.2)E 0                                      3.6 - 1190.0)E -3            -2.7 - 0.2)E 0 (0/ 24)                                             (0/ 4)                        (0/ 16)
La-140     (40)              -9.4E -3                    ONS*5                   1.5E -1                      -3.8E -2 (0)               -7.9 - 6.1)E -1                                   -1.0 - 60.5)E -2               -4.2 - 1.4)E -1 (0/ 24)                                             (0/ 4)                       (0/ 16)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Air Particulates !AP}                UNITS: pCi/cubic meter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides                    Mean***                        Station            Mean***                       Mean****
(No. Analyses)       Required    Range                                             Range                         Range Non-Routine*            LLD      No. Detected**                                    No. Detected**                No. Detected**
Ce-141       (40)                      4.7E -4                  ONS-6                   1.4E -3                      5.6E -4 (0)                     -2.5 - 3.5)E -3                                  -3.9 - 291. O)E -5           -1.2 - 4.l)E -3 (0/ 24)                                           (0/ 4)                    (0/ 16)
Ce-144       (40)                    -1.4E -4                   ONS-1                   5.4E -4                      6.7E -5 (0)                     -1.3 - 1.0)E -3                                  -2.6 - 10.2)E -4             -1. 6 - 1.5)E -3 (0/ 24)                                           (0/ 4)                    (0/ 16)
Ac-228       (40)                      2.4E -4                  ONS-2                   5.2E -4                    -1.0E ~4 (0)                     -1.1 - 1.3)E -3                                    3.4 - 8.2)E -4             -9.2 - 7.4)E -4 (0/ 24)                                           (0/ 4)                    (0/ 16)
Th-228       (40)                      l.lE -4                  SBN                     3.lE -4                      1. 6E -4 (0)                     -4.4 - 4.4)E -4                                  -8.4 - 47.7)E -5             -3.0 - 4.8)E -4 (1/ 24)                                           (0/ 4)                    (0/ 16)
*Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e.,,> MDC) is shown in parentheses.
***Mean value is set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                         Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Charcoal Cartridge (CF)               UNITS: pCi/cubic meter Indicator Stations                    Station With Highest Mean               Control Stations
                                                               ------------------7--.. ------------------~-------
, Radionuclides                     Mean***                    Station            Mean***                         Mean***
(No. Analyses)        Required    Range                                         Range                           Range Non-Routine*            LLD       No. Dete*cted**                               No. Detected**                  No. Detected**
1-131       (520)      0.07          -5.4E -5                ONS-6                     9.0E -4                      2.0E -5 (0)                      -1.7 - 1.7)E -2                                 -1.1 - 1. 7)E -2              -1.5 - 2.l)E -2
                                                 <91  312)                                           (ci/ 52)                  (0/ 208)
* Non-Routine refers to radionuclides exceeding th(l Reporting Levels in ODCM Attachment 3.21 of the ODCM        '
  **The fraction of sample analysis yielding detectable measurement$ (i.e., > MDC) is shown* in parentheses.
  *** Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Fish (FHl          UNITS: pCi/kg Indicator Stations                       Station With Highest Mean          Control Stations Radionuclides            Mean***                        Station           Mean***                    Mean***
{No. Analyses)  Required Range                                           Range                       Range Non-Routine*      LLD    No. Detected**                                   No. Detected**             No. Detected**
Be-7        (8)                 2.3E -1                 ONS-S                 1.3E 1                       8.4E 0 (0)           ( -1.5 - 1.5)E 1                                (   1.1 - 1.5)E 1           (    2.2 - 21.0)E        o*
(0/ 4)                                            (0/ 2)                    (0/ 4)
K-40        (8)                 3.2E 3                  ONS*N                 3.4E 3                       2.9E 3 (0)           (     2.9 - 3.6)E 3                             (   3.1 - 3.6)E 3           (    2.7 - 3.0)E 3 (4/ 4)                                             (2/ 2)                    (4/ 4)
Cr-51       (8)               -2.5E 0                   OFS*N                 8.4E 0                       6.5E 0 (0)            ( -1.4 - 1.l)E 1                                ( ~2.7      - 19.6}E 0      ( -2.7 - 19.6)E 0 (0/ 4)                                             (0/ 2)                    (0/ 4)
Mn-54      (8)   130            4.2E -1                 ONS*S                 8.3E -1                    -7.0E -1 (0)            ( -5.3 - l4.3)E -1                              (   2.2 - 14.3)E -1         ( -1.6 - O.l)E 0 (0/ 4)                                            (0/ 2)                    (0/ 4)
Co-57      (8)                  1.9E -1                 OFS*N                 5.4E -1                      4.8E -1 (0)            ( -:-1.2 - 1.6)E 0                              ( -2.2 - 12.9)E -1          ( -2.2 - 12.g)E -1 (0/ 4)                                             (0/ 2)                   (0/ 4)
Co-58      (8)   130          --6.4E -1                 OFS*N                 1.6E 0                       6.3E -1 (0)            ( -2.2 - 0.6)E 0                                (   8.6 - 22.6)E -1         ( -9.9 - 22.6)E -1 (0/ 4)                                             (0/ 2)                    (0/ 4)
* Fe-59      (8)   260     --.._ 1.2E 0                   ONS*S                 3.6E 0                     -6.8E -1 (0)            ( -6.0 - 6.5)E 0                                (   7.2*- 65.0)E -1         ( -4.1 - 1.8)E 0 (0/ 4)                                             (0/ 2)                   (0/ 4)
Co-60      (8)   130          -6.lE -1                  OFS-S                 2.0E 0                       1.2E 0 (0)            ( -1.7 - 1.1)E 0                                (   9.5.- 30.?)E -1         ( -1.2 - 3.1)E 0 (0/ 4)                                             (0/ 2)                   (0/ 4)
Zn-65      (8)   260          -2.0E 0                   ONS-S               -4.6E -1                     -3.3E 0 (0)            ( -5.7 - 0.8)~ 0                                ( -1.7 - 0.8)E 0            ( -8.1 - 0.5)E 0 (0/ 4)                                             (0/ 2)                   (0/ 4)
Se-75      (8)                -7.0E -1                  OFS-S                 3.3E -1                      2.7E -1 (0)            ( -1.4 - 0.3)E 0                               ( -5.1 - 11.?)E -1           ( -5.7 - 11.7)K          -i (0/ 4)                                             (0/ 2)                   (0/ 4)
Nb-95      (8)                  4.8E -1                 ONS-N                 l.8E 0                      1. 6E -0 (0)            ( -2.2 - 1.9)E 0                                (   1.7 - 1.9)E 0           (    9.1 - 24.2)E -1 (0/ 4)                                             (0/ 2)                   (0/ 4)
Zr-95      (8)                -7 .5E -2*                OFS-S                 3.2E 0                      2.lE 0 (0)            ( -1.5 - 0.9)E 0                               (    2.0 - 4.5)E 0           (    4.3 - 44.9)E -1 (0/ 4)                                             (0/ 2)                   (0/ 4)
. Donald C. Cook Nuclear Plant                         Annual Radiological Environmental Ope.rating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Fish (FH)             UNITS: pCi/kq Indicator Stations                          Station Witti Highest Mean             Control Stations Radionuclides              Mean***                         Station             Mean***                        Mean***
 . (No. Analyses)  Required   Range                                               Range                          Range Non-Routine*      LLD      No. Detected**                                      No. Detected**                 No. Detected**
Ru-103      (8)                -6.7E -1                    ONS-N                  -4.6E -1                        -1.5E 0 (0)                -1.4 - -0.l)E 0                                    -8.3 - -0.9)E -1                -2.2 - -0. 6) E 0 (0/ 4)                                             .(0/ 2)                         (0/ 4)
Ri.1-106   (8)                 -5.8E 0                     OFS-N                    1.0E 1                          2.~E     0 (0)                 -1.2 - 0.2).E 1                                      6.5 - 13.6)E 0             (  -4.8     -   13.6)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Ag-108m    (8)                 -1.3E -1                    ONS-S                    9.0E -1                         1.3E -1 (0)                 -2.1 - 1.J)E 0                                       4.9 - 13.l)E -1               -5.8 - 14.2)E -1 (0/ 4)                                               (0/ 2)                         (0/ 4)
Ag-110rri  (8)                 -7.5E -1                    OFS-N                    3.4E -1                         3.4E     -2 (0)                 .:.2. 7 - 1.6)E 0                                    2.6 - 4.l)Ei -1               -7.5     - 4.l)E     -1 (0/ 4)                                               (0/ 2)                         (0/ 4)
Sb-124     (!!)                -1.4E 0                     OFS-N                    6.3E 0                          2.8E 0 (0)                 -3 .. 5. - 1.l)E 0                                   6.1    -    6.5)E 0           -2.5 - 6.5)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Sb-125      (8)                 ~9.6E      -1               OFS-N                    2.lE 0                          2.0E o (0)                 -3.4     - O.S)E     0                               1.8    -    2,3)E 0             1.2 - 2.7)E 0 (0/ 4),                                              (0/ 2)                         (0/ 4) 1-131      (8)                   l.8E 0                    ONS-N                    2.7E 0                        -3.8E -1 (0)           . ( -1.9       -  4.0)E .0                                 1.5 - 4.0)E 0                 -4.6 - 3.2)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Cs-134     (8)   130             2.2E -1                   ON~-N                    1.lE 0                        -1.lE -1 (0)                 -6.8 .4)E -1                                  -1.2 - 23.4)E -1                -1.2 - 1.0)E 0 (0/ 4)                                               (0/ 2)                         (0/ 4)
Cs-137      (8)   150             1.4E 1                    ONS-N                    1.5~      1                     6.0E 0 (0)                   3.9 -* 22.6)E 0                                    7.0     -   ~2.6)E 0            7 .4 ,- 143.0)E -1 (3/ 4),                                              (2/ 2)                        (2/ 4)
Ba-140     (8)                 -2.8E 0                     OFS-S                    3.5E 0                          1.0E 0 (0)                 -9.8 - 7.2)E 0,                                      1. 7 - 5.3)E 0                -1.3 - 1.0)E 1 (0/ 4)                                               (0/ 2)                        (0/ 4)
La-140     (8)                   1.6E -1                   ONS-S                    9.9E -1                       -1.9E 0 (0)                 -1.9 7" 3.7)E 0                                    -1. 7' - 3.7)E 0                -5.3 - 1. 0) E 0 (0/ 4)                                               (0/. 2)                        (0/ 4)
Ce-141     (8)                   5.0E     ~1               ONS-N                    3.'0E 0                         5.8E -1 (0)                 -2.2     - 3.6)E     0
* 2.4 - 3.6)E 0                 -Ll - 2.9)E 0 (0/ 4)                                               (0/ 2)                        (0/ 4)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Fish (FH)           UNITS: pCi/kg Indicator Stations                       Station With Highest Mean             Control Stations Radionuclides                     Mean***                       Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                            Range                         Range Non-Routine*            LLD      No. Detected**                                    No. Detected**                No. Detected**
Ce-144       (8)                     -4.4E -1                   ONS-N                   2.3E 0                     -4.3E 0 (0)                     -6.0 - 4.4)E 0                                     1. 7 - 44.2)E -1           -1.5 - 0.6)E 1 (0/ 4)                                           (0/ 2)                    (0/ 4)
Ac-228      .(8)                     -4.7E -1                   OFS-N                   1.2E 0                     -1.BE 0 (0)                     -5.6 - 3.5)E 0                                   -7.0 - 9.4)E 0               -8.1 - 9.4)E 0 (0/ 4)                                           (0/ 2)                    (0/ 4)
Th-228       (8)                       3.6E -1                  OFS*N                   2.lE 0                       8.5E -1 (0)                     -5.0 - 10.0)E -1                                   1.5 - 2.7)E 0              -3.4 - 2.7)E 0 (0/ 4)                                           (0/ 2)                    (0/ 4)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE Ofor calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Sediment (SE)               UNITS: pCi/kg drv Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
Be-7        (4)              -1.3E 1                    SL*2                  -3.lE 0                    NO DATA (0)              -7.5 - 6. 6)E 1                                  -7.2 - 6.6)E 1 (0/ 4)                                            (0/ 2)
K-40       (4)                5.7E 3                    SL*2                    5.7E 3                   NO DATA (0)                4.9 - 6.6)E 3                                     4.9 - 6.6)E 3 (4/ 4).                                           (2/ 2)
Cr-51      (4)                l.9E 1                    SL*2                    4.4E 1                   NO DATA (0)               -3.6 - 8.9)E 1                                   -1.3 - 88.8)E 0 (0/ 4)                                            (0/ 2)
Mn-54       (4)               5.2E 0                    SL-3                    9.0E 0                   NO DATA (0)               -5.1 - 21.l)E 0                                  -3.2 - 21.l)E 0 (0/ 4)                                            (0/ 2)
Co-57       (4)              -2.0E 0                   *SL-3                    3.0E 0                   NO DATA (0)               -1.4 - 0.5)E 1                                     1.3 - 4.7)E 0 (0/ 4)                                            (0/ 2)
Co-58      (4)               -2.6E 0                    SL*2                    9.5E -2                  NO DATA (0)               -1.3 - 0.8)E 1                                   -7.7 - 7.9)E 0 (0/ 4)                                            (0/ 2)
Fe-59      (4)                4.9E 0                    SL*3                    1.lE 1                   NO DATA (0)               -7.5 - 22.8)E 0                                  -1.3 - 228.0)E -1
                                         . (0/ 4)                                            (0/ 2)
Co-60      (4)                5.8E 0                    SL-3                    l.5E 1                   NO DATA (0)               -1,7 - 3.5)E 1                                   -4.6 - 35.1)E 0 (0/ 4)                                            (0/ 2)
Zn-65      (4).              -1.3E 1                    SL*2                  -1.lE 1                    NO DATA (0)               -3.7 - 1.6)E 1                                   -3.7 - 1.6)E 1 (0/ 4)                                            (0/ 2)
Se-75      (4)                2.4E 0                    SL*3                    2.7E 0                   NO DATA (0)               -2.7 - 8.l)E 0                                   -2.7 - 8.l)E 0 (0/ 4)                                            (0/ 2)
Nb-95      (4)                4.4E -1                   SL*3                    7.1E 0                   NO DATA (0)               -1.8 - 1.0)E 1                                     4.7    -   9.6)E 0 (0/ 4)                                            (0/ 2)
Zr-95      (4)               -1. 7E 0                   SL*2                    1.2E 1                   NO DATA (0)              -2.5 - 1. 6) E 1                                    8.1 - 16.l)E 0 (0/ 4)                                            (0/ 2)
Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Sediment (SE)              UNITS: pCi/kg dry Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides           Mean***                        Station            Mean***                       Mean***
(No. Analyses) Required Range                                             Range                         Range Non-Routine*     LLD    No. Detected**                                    No. Detected**                No. Detected**
Ru-103     (4)              -2.7E 0                    SL-2                    2.7E 0                   NO DATA (0)              -1.2 - 0.9)E 1                                   -3.9 - 9.3)E 0 (0/ 4)                                           (0/ 2)
Ru-106     (4)              -l.8E 1                    SL-2                  -1.2E 1                    NO DATA (0)              -5.6 - 3.2)E 1                                   -5.6 - 3.2)E 1 (0/ 4)                                           (0/ 2)
Ag-108m    (4)              -2.lE -2                   SL-3                    2.9E 0                   NO DATA (0)              -6.8 - 5.3)E 0                                     5.0 - 53.0)E -1 (0/ 4)                                           (0/ 2)
Ag-110m    (4)               1.7E 0                    SL-3                    8.8E 0                   NO DATA (0)              -2.9 - 1.8)E 1                                     4.5 - 13.0)E 0 (0/ 4)                                            (0/ 2)
Sb-124     (4)               1.4E 0                    SL-2                    4.4E 0                   NO DATA (0)              -3.8 - 3.5)E 1                                   -5.9 - 14.6)E 0 (0/ 4)                                            (0/ 2)
Sb-125     (4)               3.5E 0                    SL-3                    l.4E 1                   NO DATA (0)              -1.6 - 3.5)E 1                                   -7.1 - 34.9)E 0 (0/ 4)                                            (0/ 2) 1-131      (4)              -4.4E -1                   SL-2                    1.lE 1                   NO DATA (0)              -2.3 - 2.3)E 1                                   -3.4 - 233.0)E -1 (0/ 4)                                            (0/ 2)
Cs-134     (4)  150          1.2E 1                    SL-2                    1.4E 1                   NO DATA (0)               3.3 - 25.2)E 0                                    3.3 - 2S.2)E 0 (0/ 4)                                            (0/ 2)
Cs-137     (4)  180          6.0E 0                    SL-3                    1.4E 1                   NO DATA (0)              -2.7 - 18.6)E 0                                    9.1 - 18.6)E 0 (0/ 4)"                                           (0/ 2)
Ba-140     (4)             -6.8E 0                     SL-3                    2.2E 1                   NO DATA (0)             -7.7 - 4.4)E 1                                    -2.7 - 440.0)E -1 (0/ 4)                                            (0/ 2)
La-140     (4)               l.3E 0                    SL-2                    8.9E 0                   NO DATA (0)             -1.5 - 1.4)E 1                                      3.8 - 13.9)E 0 (0/ 4)                                            (0/ 2)
Ce-141     (4)               7.lE 0                    SL-2                    1. 9E 1                  NO DATA (0)             -1.1 - 2.0)E 1                                      1.7 - 2.0)E 1 (0/ 4)                                            (0/ 2)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January* December 2015)
MEDIUM: Sediment (SE)              UNITS: pCi/kg dry Indicator Stations                       Station With Highest Mean             Control Stations Radionuclides                     Mean***                       Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                            Range                         Range Non-Routine*            LLD      No. Detected**                                    No. Detected**                No. Detected**
Ce-144      (4)                       1. 9E 0                   SL-2                    1.3E 1                   NO DATA (0)                      -1.4 - 2. 6)E 1                                  -1.2     -   26.4)E 0 (0/ 4)                                           (0/ 2)
Ac-228      (4)                       1.6E 2                    SL-3                    1.BE 2                   NO DATA (0)                       1.1     -  2.0)E 2                                1.5    -   2.0)E 2 (2/ 4)                                            (1/ 2)
Th-228      (4)                       1.4E 2                    SL-3                    1.6E 2                   NO DATA (0)                       1.1     -  2.0)E 2                                1.2    -   2.0)E 2 (3/ 4)                                            (1/ 2)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Food Products CTFl                 UNITS: pCi/kg wet Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
Be-7        (2)                3.8E 1                   OFS-G                   1.5E 2                         l.5E 2 (0)
(1/ 1)                                           (1/ 1)                         (1/ 1)
K-40       (2)                2.4E 3                    OFS-G                   4.lE 3                         4.lE 3 (0)
(1/ 1)                                           (1/ 1)                         (1/ 1)
Cr-51      (2)               -8.9E 0                    ONS-G                 -8.9E 0                        -1. BE 1 (0)
(0/ 1)                                           (0/ 1)                         (0/ 1)
Mn-54      (2)                 4.7E -1                  ONS-G                   4.7E -1                      -1. 6E 0 (0)
(0/ 1)                                            (0/ 1)                         (0/ 1)
Co-57      (2)                1.5E -1                   ONS-G                   l.5E -1                      -8.7E -1 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Co-58      (2)                1.4E 0                    ONS-G                   1.4E 0                         1.3E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Fe-59      (2)                l.3E 0                    ONS-G                   1.3E 0                       -6.lE 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Co-60      (2)                3.5E -1                   ONS-G                   3.5E -1                      -3.4E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Zn-65      (2)               -9.0E"O                    OFS-G                 -6.3E -1                       -6.3E -1
                                                            \_
(0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Se-75      (2)                5.2E -1                   ONS-G                   5.2E -1                      -1.2E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Nb-95      (2)                1.lE 0                    ONS-G                   1.lE 0                         5.3E -2 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Zr-95      (2)                2.5E 0                    OFS-G                   4.7E 0                         4.7E 0 (0)
(0/ 1)                                            (0/ 1)                        (0/ 1)
Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Food Products (TF)                 UNITS:      pCi/kg wet Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides                     Mean***                        Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                             Range                         Range Non-Routine*            LLD       No. Detected**                                    No. Detected**                No. Detected**
Ce-144      (2)                        2.lE 0                    ONS*G                   2.lE 0                     -3.6E 0 (0)
(0/ 1)                                           (0/ 1)                    (0/ 1)
Ac-228      (2)                        3.SE 0                    ONS-G                   3.SE 0                     -2.2E 1 (0)
(0/ 1)                                            (0/ 1)                    (0/ 1)
Th-228      (2)                        2.4E 0                    ONS-G                   2.4E 0                       6.0E -1 (0)
(0/ 1)                                            (0/ 1)                    (0/ 1)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
*** Mean value set to O.OE O for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant *
(January - December 2015)
MEDIUM: Vegetation (TV)              UNITS: pCi/kgwet Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides             Mean***                        Station            Mean***                       Mean***
(No. Analyses)   Required Range                                             Range                         Range Non-Routine*       LLD    No. Detected**                                    No. Detected**                No. Detected**
Be-7        (28)                l.6E 3                   ONS3-V                  2.0E 3                         1.4E 3 (0)                 3.4 - 37.3)E 2                                   8.8 - 36.2)E 2                 9.4 - 18.2)E 2 (24/ 24)                                           (9/ 9)                         (4/ 4)
K-40        (28)                2.6E 3                   OFS1-V                  3.4E 3                         3.2E 3 (0)                 1.0 - 5.7)E 3                                    3.3 - 3.7)E 3                  2.6 - 3.7)E 3 (24/ 24)                                           (3/ 3)                         (4/ 4)
Cr-51       (28)              -4.lE 0                    OFS1-V                  1.2E 1                       -1.5E -1 (0)               -6.6 - 5.2)E 1                                   -5.7 - 27.3)E 0                -3.5 - 2.7)E 1 (0/ 24)                                           (0/ 3)                         (0/ 4)
Mn-54       (28)               1. 6E -1                  ONS1-V                  5.9E -1                        3.lE -1 (0)               -3.4 - 5.2)E 0                                   -2.0 - 5.2)E 0                 -7.4 - 7.9)E -1 (0/ 24)                                          (0/ 12)                        (0/ 4)
Co-57       (28)                7.8E -1                  ONS3-V                  1.5E 0                         2.lE -1 (0)               -2.5 - 7.0)E 0                                     5.5 - 36.2)E -1              -9.2 - 12.5)E -1 (0/ 24)                                           (0/ 6)                        (0/ 4)
Co-58       (28)               1. 2E -1                  ONS3-V                  2.3E 0                       -1.4E 0 (0)               -8.4 - 8.l)E 0                                   -1.4 - 5.7)E 0                 -2.0 - -0.6)E 0 (0/ 24)                                           (0/ 6)                        (0/ 4)
Fe-59     - (28)               5.9E -1                   ONS3-V                  l.8E 0                       -7. 6E 0 (0)               -1.4 - 1.3)E 1                                   -1.4 - 1.2)E 1                 -1.2 - -0.3)E 1 (0/ 24)                                           (0/ 6)                        (0/ 4)
Co-60       (28)               4.9E -1                   ONS2-V                  l.8E 0                       -1. 7E 0 (0)               -6.9 - 7.8)E 0                                   -1. 7 - 7.8)E 0                -6.6 - 1.4)E 0 (0/ 24)                                           (0/ 6)                        (0/ 4)
Zn-65       (28)              -4.8E 0                    ONS1-V                -8.9E -1                       -3.0E 0 (0)               -3.3 - 0.8)E 1                                   -1.0 - 0.8)E 1                 -7.1 - 2.9)E 0 (0/ 24)                                          (0/ 12)                        (0/ 4) 0 Se-75       (28)               8.3E -l                   ONS1-V                  2.2E 0                       -1.3E 0 (0)               -3.8 - 5.4)E 0                                   -3.8 - 5.4)E 0                 -2.8 - 1.l)E 0 (0/ 24)                                           (0/ 12)                        (0/ 4)
Nb-95       (28)               l.OE 0                    OFS1-V                 1.9E 0                         1. 6E 0 (0)               -5.8 - 4.6)E 0                                     9.2 - 347.0)E -2               9.2 - 347.0)E -2 (0/ 24)                                            (0/ 3)                        (0/ 4)
Zr-95       (28)               1. 3E -1                  ONS1-V                  1.4E 0                       -1.SE 0 (0)               -8.7 - 13.4)E 0                                  -8.7 - 13.4)E 0                -3.5 - -0.7)E 0 (0/ 24)                                           (0/ 12)                        (0/ 4)
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Vegetation (TV)             UNITS: pCi/kgwet Indicator Stations                        Station With Highest Mean           Control Stations Radionuclides            Mean***                        Station           Mean***                      Mean***
(No. Analyses)  Required Range                                            Range                        Range Non-Routine*      LLD    No. Detected**                                   No. Detected**               No. Detected**
Ru-103     (28)                4.7E -1                  OFS2-V                 l.5E 0                        6.0E -1 (0)               -3.7 - 4.l)E 0                                                                -2.0 - 15.3)E -1 (0/ 24)                                         (0/ 1)                         (0/ 4)
Ru-106     (28)                2.4E 0                   OFS1-V                 2.2E 1                        1.lE 1 (0)               -3.2 - 5.l)E 1                                    3.2 - 59.8)E 0              -2.4 - 6.0)E 1 (0/ 24)                                         (0/ 3)                         (0/ 4)
Ag-108m    (28)              -5.lE -1                   ONS2-V                 5.3E -1                     -1.lE 0 (0)               -4.6 - 8.9)E 0                                  -3.1 - 8.9)E 0                -4.7 - 3.l)E 0 (0/ 24)                                         (0/ 6)                         (0/ 4)
Ag-110m    (28)              -8.lE -1                   OFS2-V                 1.6E 0                      -8.2E -1 (0)               -8.4 - 4.8)E 0                                                                -3.5 - 2.0)E 0 (0/ 24)                                         (0/ 1)                         (0/ 4)
Sb-124     (28)              -2.4E -1                   ONS2-V                 5.8E 0                        1.4E 0 (0)               -1.2 - 1.2)E 1                                  -7.8 - 12.4)E 0               -2.0 - 3.4)E 0 (0/ 24)                                         (0/ 6)                         (0/ 4)
Sb-125     (28)               7.9E -1                   OFS1-V                 2.5E 0                      -4.2E -1 (0)               -1.2 - 1.5)E 1                                  -3.5 - 11.l)E 0               -9.1 - 11.l)E 0 (0/ 24)                                          (0/ 3)                         (0/ 4) 1-131      (28)   60         -1.5E 0                    OFS2-V                 3.4E 0                        1.4E 0 (0)               -9.4 - 6.4)E 0                                                                -1.0 - 3.4)E 0 (0/ 24)                                         (0/ 1)                        (0/ 4)
Cs-134     (28)   60          1.0E 0                    OFS2-V                 2.8E 0                        1.8E 0 (0)               -5.8 - 7.0)E 0                                                                  1.2 - 2.8)E 0 (0/ 24)                                         (0/ 1)                        (0/ 4)
Cs-137     (28)   60          5.7E 0                    ONS2-V                 9.lE 0                        3.3E 0 (0)               -6.0 - 28.6)E 0                                 -1. 7 - 25.5)E 0                3.4 - 48.8)E -1 (3/ 24)                                          (1/ 3)                        (0/ 4)
Ba-140     (28)              -1. 5E 0                   OFS1-V                 1.lE 1                        1.lE 1 (0)               -3.1 - 2.l)E 1                                    4.0 - 18.2)E 0                4.0 - 18.2)E 0 (0/ 24)                                          (0/ 3)                        (0/ 4)
La-140     (28)              -6.8E -2                   ONS2-V                 3.9E 0                      -1.4E 0 (0)               -7.4 - 16.3)E 0                                 -2.7 - 16.3)E 0               -3.6 - 0.2)E 0 (0/ 24)                                          (0/ 6)                        (0/ 4)
Ce-141     (28)               9.3E -1                   ONS2-V                 5.4E 0                      -6.7E -1 (0)               -2.0 - 1. 4)E 1                                   5.1 - 136.0)E -1            -1.2 - 0.4)E 1 (0/ 24)                                          (0/ 6)                        (0/ 4)
Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Vegetation !TV!            UNITS: pCi/kg wet Indicator Stations                       Station With Highest Mean        Control Stations Radionuclides                     Mean***                        Station          Mean***                   Mean***
(No. Analyses)        Required    Range                                           Range                     Range Non-Routine*            LLD       No. Detected**                                  No. Detected**            No. Detected**
Ce-144       (28)                     -1. 7E 0                   ONS2-V               1. 7E -2                -6.9E 0 (0)                      -2.9 - 5.B)E 1                                 -2.9 - 5.B)E 1           -1.4 - 0.3)E 1 (0/ 24)                                      (0/ 6)                   (0/ 4)
Ac-22*8      (28)                      1.3E 1                    ONS3-V               2.3E 1                    2.lE 1 (0)                      -3.3     -   6.2)E 1                            4.9 - 50.7)E 0            1.4 - 2.9)E 1 (0/ 24)                                      (0/ 6)                   (0/ 4)
Th-228       (28)                      1. 6E 0                   OFS1-V.              8.0E 0                    3.8E 0 (0)                      -1. 7 - 2.3)E 1                                 6.5   -   9.2)E 0       -8.8 - 9.2)E 0 (1/ 24)                                      (0/ 3)                   (0/ 4)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
** The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Drinking Water {WDl                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides             Mean***                        Station            Mean***                       Mean***
(No. Analyses)   Required Range                                             Range                         Range Non-Routine*       LLD    No. Detected**                                    No. Detected**                No. Detected**
BETA        (52)    4          1.5E 0                    LTW                     1.5E 0                         1.3E 0 (0)                -1. 7 - 2.B)E 0                                  -1. 7 - 2.8)E 0                -8.1 - 31.3)E -1 (0/ 26)                                          (0/ 26)                        (0/ 26)
H-3        (8)    2000        -1. SE 2                   STJ                   -7 .BE 1                       -7.BE 1 (0)                -3.9 - 1.7)E 2                                   -6.1 - 4.3)E 2              ( -6.1 -        4.3)E 2 (0/ 4)                                           (0/ 4)                         (0/ 4)
Be-7       (52)                4.0E 0                    LTW                     4.0E 0                         3.9E 0 (0)                -1.5 - 3.0)E 1                                   -1.5 - 3.0)E 1                 -4.0 - 3.2)E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
K-40       (52)                1.SE 0                    STJ                     l.2E 1                         l.2E 1 (0)                -5.0 - 6.l)E 1                                   -2.7 - 5.S)E 1                 -2.7 - 5.B)E 1 (2/ 26)                                          (0/ 26)                        (0/ 26)
Cr-51      (52)                3.2E 0                    LTW                     3.2E 0                       -1. 3E -1 (0)                -1.3 - 2.4)E 1                                   -1.3 - 2.4)E 1                 -2.1 - 1.8)E 1 (0/ 26)                                           (0/ 26)                        (0/ 26)
Mn-54      (52)    15         -4.0E -1                   STJ                   -3.SE -1                       -3.SE -1 (0)                -2.6 - 1.4)E 0                                   -1.8 - 1.4)E 0                 -1.8 - 1.4)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-57      (52)               -9.9E -2                   LTW                   -9.9E -2                       -3.5E -1 (0)                -2.8 - 2.5)E 0                                   -2.8 - 2.5)E 0                 -3.4 - 1.3)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-58      (52)    15         -1. SE -1                  LTW                   -1.SE -1                       -2.5E -1 (0)                -1. 9 - 2.0)E 0                                  -1.9 - 2.0)E 0                 -5.7 - 2.6)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Fe-59      (52)    30         -2.4E -1                   STJ                     1.6E 0                         1.6E 0 (0)                -3.7 - 2.3)E 0                                   -1.2 - 4.8)E 0                 -1.2 - 4.8)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-60      (52)    15          3.6E -1                   LTW                     3.6E -1                        2.7E -1 (0)               -1.9 - 2.5)E 0                                    -1. 9 - 2.5)E 0                -2.1 - 3.5)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Zn-65      (52)    30        -1.SE 0                     STJ                     3.lE -1                        3.lE -1 (0)               -9.5 - 2.7)E 0                                    -5.1 - 9.8)E 0                 -5.1 - 9.8)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Se-75      (52)                3.2E -1                   LTW                     3.2E -1                      -2.lE -1 (0)               -2.7      -  7.0)E 0                              -2.7 - 7.0)E 0                 -2.2 - 2.8)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Donald C. Cook Nuclear Plant                      Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Drinking Water (WD)                UNITS: pCi/liter Indicator Stations                        Station With Highest Mean           Control Stations Radionuclides             Mean***                        Station           Mean***                      Mean***
(No. Analyses)   Required Range                                            Range                        Range Non-Routine*       LLD    No. Detected**                                   No. Detected**               No. Detected**
Nb-95       (52)   15           2.2E -1                  STJ                    7.5E -1                       7.SE -1 (0)               -3.4 - 3.3)E 0                                   -1.6 - 3.9)E 0               -1. 6 - 3. 9) E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Zr-95       (52)   30         -9.9E -2                   STJ                    7.6E -1                       7.6E -1 (0)               -4.0 - 3.8)E 0                                  -2.7 - 6.5)E 0                -2.7 - 6.5)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ru-103      (52)              -2.6E -1                   LTW                  -2.6E -1                      -3.2E -1 (0)               -2.7 - 1.7)E 0                                  -2.7 - 1.7)E 0                -3.9 - 2.0)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ru-106      (52)               1.lE 0                    STJ                    1.2E 0                        1.2E 0 (0)               -1.1 - 3.3)E 1                                  -1. 7 - 1.4)E 1               '-1.7 - l.4)E 1 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ag-108m     (52)                5.7E -2                  STJ                    4.4E -1                       4.4E -1 (0)                -2.5 - 2.8)E 0                                  -1.9 - 3.9)E 0                -1.9 - 3.9)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ag-110m    (52)               -4.8E -2                   LTW                  -4.8E -2                      -4.lE -1 (0)                -3.3 - 2.8)E 0                                  -3.3 - 2.8)E 0                -3.4 - 1.4)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Sb-124     (52)               -4.SE -1                   LTW                  -4.SE -1                      -8.lE -1 (0)                -1.3 - 0. 7)E 1                                 -1.3 - 0.7)E 1                -7.9 - 4.4)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Sb-125     (52)                1. SE -2                  LTW                    1.5E -2                     -1.SE 0 (0)                -1.0 - O.S)E 1                                  -1.0 - O.S)E 1                -7.3 - 4.9)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26) 1-131      (52)     1          3.5E -2                   STJ                    4.5E -2                       4.SE -2 (0)                -6.1 - 7.8)E -1                                 -4.4 - 8.0)E -1               -4.4 - 8.0)E -1 (0/ 26)                                         (0/ 26)                     (0/ 26)
Cs-134     (52)    15          3.3E -1                   STJ                    4.3E -1                       4.3E -1 (0)                -2.7 - 7.l)E 0                                  -2.9 - 2.9)E 0                -2.9 - 2.9)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Cs-137     (52)    18           3.0E -1                  LTW                    3.0E -1                       6.2E -2 (0)                -2.0 - 5.0)E 0                                  -2.0 - 5.0)E 0                -4.2 - 2.8)E 0 (0/ 26)                                         (0/ 26)                     (0/ 26)
Ba-140     (52)    60         -1. 4E -1                  STJ                    3.7E 0                        3.7E 0 (0)                -1.2 - 1. 6)E 1                                 -1.2 - 2.3)E 1                -1.2 - 2.3)E 1 (0/ 26)                                         (0/ 26)                     (0/ 26)
Donald C. Cook Nuclear Plant                            Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Drinking Water (WO)                 UNITS: pCi/liter Indicator Stations                      Station With Highest Mean             Control Stations Radionuclides                     Mean***                      Station            Mean***                       Mean***
(No. Analyses)        Required    Range                                           Range                         Range Non-Routine*            LLD       No. Detected**                                  No. Detected**                No. Detected**
La-140       (52)        15          -4.SE -2                  STJ                     1.lE -1                      1.lE -1 (0)                     -4.0 - 2.5)E 0                                  -3.9 - 4.7)E 0               -3.9 - 4.7)E 0 (0/ 26)                                          (0/ 26)                    (0/ 26)
Ce-141      (52)                      7.7E -1                  LTW                     7.7E -1                      7.4E -1 (0)                      -3.5 - 5.4)E 0                                  -3.5 - 5.4)E 0               -6.6 - 7.9)E 0 (0/ 26)                                          (0/ 26)                    (0/ 26)
Ce-144      (52)                      3.2E -1                  LTW                     3.2E.-l                    -2.5E -1 (0)                      -1. 6 - 2.2)E 1                                 -1.6 - 2.2)E 1               -1.4 - 2.3)E 1 (0/ 26)                                          (0/ 26)                    (0/ 26)
Ac-228      (52)                     -6.5E -1                  STJ                     3.SE -1                      3.SE -1 (0)                      -1.3 - 0.9)E 1                                  -1.0 - 2.0)E 1               -1.0 - 2.0)E 1 (0/ 26)                                          (0/ 26)                    (0/ 26)
Th-228      (52)                      2.lE 0                   LTW                     2.lE 0                       l.7E 0 (0)                      -3.1 - 9.4)E 0                                  -3.1 - 9.4)E 0               -5.6 - 9.4)E 0 (0/ 26)                                          (0/ 26)                    (1/ 26)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Ground Water. (WG)             UNITS: pCi/liter Indicator Stations                     Station With Highest Mean          Control Stations Radionuclides             Mean***                      Station           Mean***                    Mean***
(No. Analyses)   Required Range                                          Range                      Range Non-Routine*       LLD    No. Detected**                                 No. Detected**             No. Detected**
H-3        (68)   2000        -2 .. 5E 2               W-5                   1.3E 2                 NO DATA (0)                -1.2 - 0.8)E 3                                -3.2 - 7.6)E 2 (0/ 68)                                        (0/ 4)
Be-7       (68)                3.3E 0                  W*3                   1'.4E 1                NO DATA (0)                -2.1 - 4.0)E 1                                 4.2 - 23.3)E 0 (0/ 68)                                        (0/ 4)
K-40       (68)                9.3E 0                  W-3                   2.6E 1                 NO DATA (0)                -3.8 - 4.5)E 1                                 8.3 - 37.0)E 0 (1/ 68)                                        (0/ 4)
Cr-51      (68)'             -1. 3E 0                  W-12                  7.3E 0                 NO DATA (0)               -3.2 - 2.8)E 1                                -3.9 - 23.4)E 0 (0/ 68)                                        (0/ 4)
Mn-54      ((i8)   15          1.1E -1                 W-7                   1.2E 0                 NO DATA (0)               -3.1 - 4.7)E 0                                  4.3 -- 28.1)E -1 (0/ 68)                                        (0/ 4)
Co-57      (68)              -5.2E -2.                 W-15                  9.3E -1                NO DATA (0)                -2.9 - 2.7)E 0                               -1.2 - 2.7)E 0 (0/ 68)                                        (0/ 4)
Co-58      (68)    15        -4. 6E -1                 W-13                  5.2E -1                NO DATA (0)               -3.1 - 3.5)E 0                                -2.5 - 3.5)E 0 (o/ 68)                                        (0/ 4)
Fe-59      (68)    30        -3.4E -1                  W-2                   1.7E 0                 NO DATA (0)                -6.8 - 7.:i)E .0                             -1. 4 - 7. 2)E 0 (0/ 68)                                        (0/ 4)
Co"60      (68)    15          5.8E -1                 MW-20                 2.3E 0                 NO DATA (0)               -1.9 - 4.1-)E 0                                 9.2 - 37.2)E -1 (0/ 68)                                        (0/ 4)
Zn-65      (68)    30        -6.8E -1                  W-15                  2.0E 0                 NO DATA (0)               -8.8 - 9.0)E 0                                -3.5 - 9.0)E 0 (0/ 68)                                        (0/ 4)
Se-75      (68)                1. OE -1                W-10                  2.0E 0                 NO DATA (0)               -5.0 - 3.6)E 0                                  7.0 - 36.0)E -1 (0/ 68)                                        (0/ 4)
Nb-95      (68)    15          6.2E -1                 W-4                   1.7E 0                 NO DATA (0)            .( ~2.7      - 4.0)E 0                             1.1 - 2.4)E 0 (0/ 68)                                        (0/ 4)
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Ground Water !WG)              UNITS: pCi/liter Indicator Stations                      Station With Highest Mean       Control Stations Radionuclides            Mean***                        Station         Mean***                  Mean***
(No. Analyses)  Required Range                                          Range                    Range Non-Routine*      LLD    No. Detected**                                 No. Detected**           No. Detected**
Zr-95      (68)   30         -1. 7E -1                  W-12                2.5E 0               NO DATA (0)               -9.9 - 10.0)E 0                               -3.2 - 10.0)E 0 (0/ 68)                                     (0/ 4)
Ru-103     (68)              -5.9E -1                   W-13
* 9. 7E -1             NO DATA (0)               -3.9 - 3.2)E 0                             ( -5.3 - 30.B)E -1 (0/ 68)                                     (0/ 4)
Ru-106     (68)                2.0E 0                   W-1                 1.2E 1               NO DATA (0)               -2.2 - 2.9)E 1                           . ( -3.9 - 288.0)E -1 (0/ 68)                                     (0/ 4)
Ag-108m    (68)               2.0E -1                   W-15                1.3E 0               NO DATA (0)               -2.5 - 4.2)E 0                                -6.9 - 204.0)E -2 (0/ 68)                                     (0/ 4)
Ag-110m    (68)              -3.2E -1                   W-4                 5.lE -1              NO*DATA (0)               -3.2 - 4.2)E 0                                -5.1 - 13.4)E -1 (0/ 68)                                     (0/ 4)
Sb-124     (68)                2.7E -1                  W,11                4.lE 0               NO DATA (0)               -6.9 - 7.4)E 0                                -1.1 - 7.4)E 0 (0/ 68)                                     (0/ 4)
Sb-125     (68)              -1. BE -1                  W-6                 4.0E 0               NO DATA (0)               -1.2 - 0.9)E 1                                 2.3 - 7.7)E 0 (0/ 68)                                     (0/ 4) 1-131      (68)    1          3.BE -2                   W-2                 2.4E 0.              NO DATA (0)               -5.7 - 6.5)E 0                                 1.7 - 3.0)E 0 (0/ 68)                                     (0/ 4)
Cs-134     (68)   15           6.4E -2                  W-15
* 1.2E 0               NO DATA (0)               -2.7 - 6.9)E 0                                -2.3 - 6.9)E 0 (0/ 68)                                     (0/ 4)
Cs-137     (68)   18          2.lE -1                   W-6                 2.5E 0               NO DATA (0)               -4.0 - 3.3)E 0                                 1.3 - 3.3)E 0 (0/ 68)                                      (0/ 4)
Ba-140     (68)   60         -2.lE -1                   W-6                 3.9E 0               NO DATA (0)               -2.4 - 1.6)E 1                                 1.2 - 9.B)E 0 (0/ 68)                                      (0/ 4)
La-140     (68)   15          3.5E: -1                  W-9                 2.4E 0               NO DATA (0)               -5.5 - 6.B)E 0                                 1.4 - 4.9)E 0 (0/ 68)                                      (0/ 4)
Donald C. Cook Nuclear Plant                           Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Ground Water !WG)                UNITS: pCi/liter Indicator Stations                     Station With Highest Mean            Control Stations Radionuclides                     Mean***                     Station            Mean***                      Mean***
(No. Analyses)        Required    Range                                          Range                        Range Non-Routine*            LLD       No. Detected**                                 No. Detected**               No. Detected**
Ce-141      (68)                       6.7E -1                W-2                     3.SE 0                  NO DATA (0)                      -6.6    -  7 .9)E 0                              3.0 - 4.7)E 0 (0/ 68)"                                        (0/ 4)
Ce-144      (68)                       1.0E 0                 W-14                    1.1E 1                  NO DATA (0)                      -1. 7   -  4.2)E 1                             -2.3     -  420.0)E -1 (0/ 68)                                          (0/ 4)
Ac-228      (68)                       2.6E 0                 W-11                    8.2E 0                  NO DATA (0)                      -1.1    -  2.7)E 1                             -5.2     -  26.9)E 0 (0/ 68)                                          (0/ 4)
Th-228      (68)                       1. 7E 0                W-15                    6.SE 0                  NO DATA (Q)                      -7.6 - 14.8)E 0                                -6. 7    -  14.8)E 0 (2/ 68)                                          (0/ 4)
*Non-Routine refers to radionuclides.exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
*** Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Surface Water {WS)                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
H-3         (6)  2000        -2.4E 2                    SWL-3                  -2.0E 2                   NO DATA (0)              -1.1 - 0.2)E 3                                    -6.4 - 1. 7)E 2 (0/ 6)                                           (0/ 3)
Be-7       (18)               1.2E 0                    SWL-2                   3.9E 0                   NO DATA (0)               -1.2 - 1.2)E l                                   -1.2 - 1.2)E 1 (0/ 18)                                           (0/ 9)
K-40       (18)              -3.5E 0                    SWL-3                 -9.6E -1                   NO DATA (0)               -2.4 - 2.5)E 1                                   -2.3 - 2.5)E 1 (0/ 18)                                           (0/ 9)
Cr-51      (18)               1.lE 0                    SWL-2                   4.5E 0                   NO DATA (0)               -1.8 - 1. 7)E 1                                  -6.9 - 16.9)E 0 (0/ 18)                                           (0/ 9)
Mn-54      (18)   15           8.7E -2                  SWL-2                   3.7E -1                  NO DATA (0)               -1.6:... 2.7)E 0                                 -1.2 - 2.7)E 0 (0/ 18)                                           (0/ 9)
Co-57      (18)               1. 4E -2                  SWL-2                   1. 9E -1                 NO DATA (0)               -1.l - 1.3)E 0                                   -5.9 - 12.8)E -1 (0/ 18)                                           (0/ 9)
Co-58      (18)   15          1. 6E -1                  SWL-2                   4.6E -1                  NO DATA (0)               -1.2 - 2.5)E 0                                   -1.1 - 2.5)E 0 (0/ 18)                                           (0/ 9)
Fe-59      (18)   30         _:1.4E -1                  SWL-2                   1. 6E -1                 NO DATA (0)               -2.4 - 2.4)E 0                                   -2.2 - 2.4)E 0 (0/ 18)                                           (0/ 9)
Co-60      (18)   15          1.5E -1                   SWL-3                   2.6E -1                  NO DATA (0)               -1.0 - l.5)E 0                                   -5.6 - 15.l)E -1 (0/ 18)                                           (0/ 9)
Zn-65      (18)   30         -8.4E -1                   SWL-3                 -8.3E -1                   NO DATA (0)               -3.3 - 1. 7)E 0                                  -3.3 - 1.4)E 0 (0/ 18)                                           (0/ 9)
Se-75      (18)               1.2E -1                   SWL-2                   2.4E -1                  NO DATA (0)               -1.3 - 2.0)E 0                                   -1.3 - 2.0)E 0 (0/ 18)                                           (0/ 9)
Nb-95      (18)   15          3.3E -1                   SWL-3                   3.7E -1                  NO DATA (0)               -1. 6 - 2.l)E 0                                  -1. 6 - 2.l)E 0 (0/ 18)                                            (0/ 9)
Donald C. Cook Nuclear Plant                       Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Surface Water !WSl                 UNITS: pCi/liter
                            ..Indicator   Stations
______________________                  Station With Highest Mean             Control Stations Radionuclides             Mean***                         Station            Mean***                       Mean***
(No. Analyses)   Required  Range                                             Range                         Range Non-Routine*       LLD    No. Detected**                                     No. Detected**                No. Detected**
Zr-95       (18)   30           -2.4E -1                  SWL-3                 -2.2E -1                   NO DATA (0)                 -2.0 - 2.1i:E o                                 -2.8 - 2.l)E 0 (0/ 18)                                           (0/ 9)
Ru-103     (18)                 -7.8E -1                  SWL-2                 -3.7E -1                   NO DATA (0)                  -6.0 - 0.9)E 0                                  -1.2 - 0.9)E 0 (0/ 18)                                           (0/ 9)
Ru-106     (18)                 -6.2E -1                  SWL-2                   2.7E 0                   NO DATA (0)                  -1.1 - 1.8)E 1                                  -1.1 - 1.8)E 1 (0/ 18)                                           (0/ 9)
Ag-108m    (18)                 -4.0E -1                  SWL-3                 -1.2E -1                   NO DATA (0)                  -2.7 - 0.7)E 0                                  ...:2.2 - 0.7)E 0 (0/ 18)                                           (0/ 9)
. Ag-110m    (18)                 -4.5E ~1                  SWL-2                 -2.2E -1                   NO DATA (0)                  -3.5 - 0.7)E 0                                  -3.1 - 0.7)E 0 (0/ 18)                                           (0/ 9)
Sb-124     (18)                 -3.4E -1                  SWL-3                 -5.4E -2                   NO DATA (0)                  -3.8 - 2.8)E 0                                  -3.1 - 2.8)E 0 (0/ 18)                                           (0/ 9)
Sb-125     (18)                 -4.5E -1                  SWL-3                   5.0E -1                  NO DATA (0)                  -3.9 - 3.4)E 0                                  -2.2 - 3.4)E 0 (0/ 18)                                           (0/ 9) 1-131      (18)     1           -2.9E -1                  SWL-3                   1.2E 0                   NO DATA (0)                  -1.0 - 0.9)E 1                                  -1.8 - 7 .3)E 0 (0/ 18)                                           (0/ 9)
Cs-134     (18)    15            1. 3E -1                 SWL*3                   2.6:e: -1                NO DAT.I\.
(0)                  -1. 7 - 1.l)E 0                                 -8.9 - 10.5)E -1 (0/ 18)                                           (0/ 9)
Cs-137     (18)    18            4.8E -1                  SWL*2                   6.2E -1                  NO DATA (0)                  -8.8 - 32.2)E -1                                -9.7 - 322.0)E -2 (0/ 18)                                           (0/ 9)
Ba-140     (18)    60            3.5E 0                   SWL-2                   4.9E 0                   NO DATA (0)                  -1.8 - 1.9)E 1                                  -7.3 - 19.3)E 0 (0/ 18)                                           (0/ 9)
La-140     (18)    15           -2.6E -1                  SWL*3                 -3.lE -2                   NO DATA (0)                  -7.2 - 3.3)E 0                                  -3.4 - 3.3)E 0 (0/ 18)                                           (0/ 9)
Donald C. Cook Nuclear Plant                              Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2015)
MEDIUM: Surface Water IWS)                UNITS: pCi/liter Indicator Stations                        Station With Highest Mean            Control Stations Radionuclides                     Mean***.                       Station            Mean***                      Mean***
(No. Analyses)        Required    Range                                             Range                        Range Non-Routine*
* LLD       No. Detected**                                    No. Detected**               No. Detected**
Ce-141      (18)                       1.2E 0                    SWL-2                  1.6E 0                   NO DATA (0)                      -3.7 - 5.0)E 0                                   -1. 6 - 4.3)E 0 (0/ 18)                                          (0/ 9)
Ce-144      (18)                      -1.3E 0                    SWL-3                 -4.0E -1                  NO DATA (0)                       -1.4 - 0.7)E 1                                   -4:7 - 7.l)E 0 (0/ 18)                                          (0/ 9)
Ac-228      (18)                       1.9E 0                    SWL-3                  4.0E 0                   NO DATA (0)                       -8.1 - 16.8)E 0                                  -7.8 - 16.8)E 0 (0/ 18)                                          (0/ 9)
Th-228      (18)                       1.3E 0                    SWL-3                  1.5E 0                   NO DATA (0)                       -3.2 - 8.l)E 0                                   -3.2 - 8.l)E 0 (0/ 18)                                          (0/ 9)
*Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM
**The fraction of sample analysis yielding detectable measurements (i.e., > MDC) is shown in parentheses.
*** Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Table 3.2 2015 Environmental TLD Exposure Rate Measurements
(&#xb5;R/hr)
Offsite and Control Onsite TLDs                               Highest Mean {SBN)
TLDs Mean                 5.1 +/- 0.4             5.6 +/- 0.8                7.2 +/-*0.7 Range                3.9 - 5.7             4.1-7.8                  6.1 - 7.8 No. of Measurements*             48                    60                        4
* ,    Each measurement was based on quarterly readings from three TLD elements.
Units are &#xb5;R (micro-roentgen) per hour.
Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Table 3.3 2015 ENVIRONMENTAL TLD DATA 

==SUMMARY==

Exposure Rate
(&#xb5;R/hr +/- 1 std. dev.)
Average Annual First         Second                 Third        Fourth        Exposure Rate Station Number       Quarter          Quarter              Quarter       Quarter            (&#xb5;R/hr)
T-01          4.7 +/- 0.2        5.3 +/- 0.2            5.1+/-0.2       5.6 +/- 0.3*            5.2 T-02          4.7 +/- 0.2        5.4 +/- 0.5            5.2 +/- 0.1     5.5 +/- 0.2             5.2 f        T-03          3.9 +/- 0.2        4.5 +/- 0.3            5.1+/-0.3      5.7 +/- 0.3              4.8
       . T-04          5.1+/-0.2          5.6 +/- 0.2          . 5.5 +/- 0.2    5.0 +/- 0.2              5.3 T-05          4.7 +/- 0.3        5.2 +/- 0.4            5.1+/-0.2      5.6 +/- 0.4              5.2 T-06          4.4 +/- 0.3        5.2 +/- 0.2            5.3 +/- 0.4     5.3 +/- 0.3             5.1 T-07          4.5 +/- 0.3        5.3 +/- 0.2            5.2 +/- 0.2    5.3 +/- 0.2              5.1 T-08          4.7.+/- 0.2        5.1+/-0.3              5.1+/-0.3      5.4 +/- 0.3              5.1 T-09          4.4 +/- 0.2        4.9 +/- 0.2            4.9 +/- 0.1    5.2 +/- 0.2              4.9 T-10          4.6 +/- 0.3        5.3 +/- 0.2            5.2 +/- 0.3    5.3 +/- 0.3              5.1 T-11          4.6 +/- 0.4        5.3 +/- 0.2            5.2 +/- 0.3    5.6 +/- 0.3              5.2 T-12          4.8 +/- 0.4        5.0 +/- 0.2            5.3 +/- 0.2    5.6 +/- 0.2              5.2 NBF           5.2 +/- 0.2        5.7 +/- 0.5            5.5 +/- 0.3    5.7 +/- 0.2              5.5 SBN           6.1+/-0.3          7.8 +/- 0.5            7.4 +/- 0.4    7.3 +/- 0.3            ' 7.2 oow*           4.4 +/- 0.2        5.1+/-0.2              5.0 +/- 0.2    5.1+/-0.2                4.9 COL           4.1 +/- 0.2        4.7 +/- 0:2            5.0 +/- 0.3    4.9 +/- 0.3              4.7 OFT-1          4.3 +/- 0.2        5.3 +/- 0.3            5.1 +/- 0.2    5.3+/- 0.3               5.0 OFT-2          4.7 +/- 0.2        5.3 +/- 0.2            5.8 +/- 0.4    5.7 +/- 0.2              5.4 OFT-3          4.7 +/- 0.2        5.4 +/- 0.4 .          5.6 +/- 0.2    5.8 +/- 0.2              5.4 OFT-4          5.1 +/-,0.4        5.5 +/- 0.3            5.6 +/- 0.2    6.2 +/- 0.3              5.6 OFT-5          4.7 +/- 0.2        5.2 +/- 0.3            5.7 +/- 0.4    5.7 +/- 0.3              5.3 OFT-6          5.7 +/- 0.3        6.3 +/- 0.3         . 7.1 +/- 0.3     7.3 +/- 0.3              6.6 OFT-7          4.7 +/- 0.2        5.5 +/- 0.2            5.5 +/- 0.2    5.7+/- 0.2               5.4 OFT-8          5.5 +/- 0.2        6.3 +/- 0.3            6.6 +/- 0.6    6.6 +/- 0.3              6.3 OFT-9          4.8 +/- 0.3        5.9 +/- 0.2            6.0 +/- 0.3    6.3 +/- 0.4              5.8 OFT-10          4.8 +/- 0.2       -5.3 +/- 0.4            5.4 +/- 0.2    5.5 +/- 0.2              5.3 OFT-11          6.0 +/- 0.2        6.1+/-0.5              6.8 +/- 0.2    6.7 +/- 0.3              6.4 Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 4.0    ANALYSIS OF ENVIRONMENTAL RESULTS 4.1    Sampling Program Deviations The ODCM states in Section 3.5 that the environmental sampling and analysis program shall be conducted as specified in Attachment 3.19 at the locations specified in the same attachment. Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability or malfunction of automatic sampling equipment. If specimens are unobtainable due to sampling equipment malfunction, every effort shall be made to complete corrective action prior to the end of the next sampling period.
All deviations from the sampling schedule shall be documented in the Annual Radiological Environmental Operating Report pursuant to Section 3.5.2 of the ODCM. In addition, sampling program deviations are documented in CNP's action tracking system by way of an Action Request (AR) or General tracker (GT). The following deviations were noted for the 2015 sampling program:
: 1. No surface water samples were obtained during the first quarter of 2015 due to ice buildup along the shore of Lake Michigan. A Data Sheet 1, Documentation of Unavailable Samples from 12-THP-601 O-RPP-643, Quarterly Review of Radiological Environmental Monitoring Program (REMP) Data, was completed and submitted for each month of unavailable samples. By February 19th the Great Lakes Environmental Research Laboratory showed over 63% Ice coverage on Lake Michigan, greater than that of 2014; by March the ice cover was over 86%. AR 2015-6989 was written to document this program deviation.
: 2. 1/1/15 to 12/31/15: The required indicator milk samples (minimum of three) were not collected due to the retirement of farm operators and inability to locate suitable replacement farms. The milk program continued to be suspended in 2015. This has been the case since 2010. GT 00102954-01 document~ this event and the commencement of broadleaf sampling in lieu of milk. AR 2011-13312 was initiated in November of 2011 to validate the adequacy of the broadleaf sampling program. The Land Use Census, performed annually by CNP, is used to identify dairy farms. However, no new dairy farms were identified in 2015.
: 3. On 4/21/2015, ONS-1 lost power due to high winds. Power was restored on 4/21/15 4 hours and 10 minutes later. This lost time was not detrimental to the sample. 12-THP-6010-RPP-643, Data Sheet 1 of RPP-643 was completed and AR 2015-5879 was written to document the event.
: 4. On 6/21/2015, ONS-1 air station lost power for 85 minutes due to inclement weather. This lost time was not detrimental to the sample. Data Sheet 1 of RPP-643 and AR 2015-8494 were written to document the event.
: 5. No surface water samples were obtained during the first four days of April (4/1-4/4) 2015 due to ice buildup along the shore of Lake Michigan Data Sheet 1 of RPP-643 was completed and submitted and AR 2015-12891 was initiated to document this occurrence.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015
: 6. On 7/13/2015 Air Stations ONS-5 and ONS-6 lost power for 74 and 3 hours respectively, due to strong storms which downed trees. ONS-6 was quickly accessed and repaired; ONS-5 had downed trees and power lines preventing access and could not be repaired for some days (AR 2015-9116) Data Sheet 1 of RPP-643 was completed.
: 7. On 7/22/2015 Air Station ONS-1 lost power for one hour (AR 2015-9704); the cause was unknown. Data Sheet 1 of RPP-643 was completed.
: 8. On 9/1/2015 Air Station NBF lost power for 30 minutes, cause unknown (AR 2015-12005) Data Sheet 1 of RPP-643 was completed.
: 9. On 9/25/2015 during modifications to the electric lines feeding ONS-2, the backup generator set up to power ONS-2 malfunctioned. Power was restored 36 hours later (AR 2015-12957). Data Sheet 1 of RPP-643 was completed.
: 10. On Monday afternoon 10/19/2015 an email was received in which GEL notified of an error discovered by them during revision of data. It was determined by GEL that not all air particulate filters for the second quarter 2015 (Analysis ID 378032) were included in the composite sample. The laboratory revised the data to include all 13 filters from the second quarter and promptly sent the corrected results. GEL also initiated a formal investigation into their program to understand and correct the cause of this oversight. 9NP documented the occurrence and the completion and results of the investigation in AR 2015-13626. The revised results showed traces of Be-7 on all ten samples, K-40 on NBF, and Th-228 on ONS-1; all naturally occurring.
: 11. No Perch samples were collected during 2015 due to insufficient quantity within the specified area (sample must be greater than or equal to four pounds and collected within the 10 mile radius of the plant). AR 2016-0080 was written to document this program deviation.
4.2     Comparison of Achieved LL.D with Requirements Attachment 3.20 from the ODCM (Table 2.3 in this report) lists the LLDs requirements for routine environmental sample analyses. The LLD's are "a priori" (before the fact) commitments to ensure measurements meet criteria for the ability of a system to detect small amounts of radioactivity. The Minimum Detectable Concentration (MDC) is calculated by the laboratory for a given measurement. The MDC is an "a posteriori" (after the fact) evaluation that quantifies the smallest activity that can be measured with the actual sample and system parameters. The MDC is compared to the LLD to ensure compliance to the requirements is achieved. Appendix D includes flags in the far right hand margin for any occurrences of exceeded MDC's As discussed in Section 3.5.2 Bases of the ODCM, on occasion, an L,LD may not be achieved due to situations such as a low sample volume. In such a case, the ODCM requires the identification and discussion of the contributing factors in the Annual Radiological Environmental Operating Report. There were no missed LLDs in 2015.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 As discussed in Section 3.5.2 Bases of the ODCM, on occasion, an LLD may not be achieved due to situations such as a low sample volume. In s_uch a case, the ODCM requires the identification and discussion of the contributing factors in the Annual Radiological Environmental Operating Report. There were no missed LLDs in 2015.
4.3    Results Compared Against Reporting Levels ODCM Section 3.5.2 requires a discussion in the Annual Radiological Environmental Operating Report of any instance that a radionuclide concentration exceeds the reporting levels given in Attachment 3.21 (Table 2.4 in this report). Reporting Levels are the environmental concentrations that relate to the As Low as Reasonably Achievable (ALARA) design dose 9bjectives of 10 CFR 50, Appendix I. It should be noted that environmental concentrations are averaged over calendar quarters for the purposes of this comparison, and that Reporting Levels apply only to measured levels of radioactivity due to plant effluents.
No Reporting Levels were exceeded in 2015.
4.4    Data Analysis by Media Type - Discussion The 2015 REMP data for each media type are discussed below. Graphical plots of monitoring data are also shown in Figures 4.1 to 4.7.
4.4.1   Air Particulate Air particulates were collected weekly on 47 mm particulate filters at six indicator locations and four control locations, and analyzed for gross beta   ~
radioactivity. On a quarterly basis, a gamma isotopic analysis was performed on the composite of each location's weekly particulate sample
                    *media.
Figure 4.1 shows the gross beta concentrations in air particulate filters collected for the operating period of th~ past ten years. Gross beta concentrations were detectable on all particulate samples, both indicator and control locations.
There was a discernible increase in the counts at all stations starting in the middle of 2010 and continuing through 2012, as shown in Figure 4.1.
When an average AREVA E-LAB response, on a monthly basis is compared to the average GEL response, there is an average increase of approximately 40%. It should be noted that this increase was found in both control samples as well as indicators, and followed the historical trending over the course of the year. This relative increase is attributed to differences in analytical method between the AREVA E-LAB (historica*I data before the second half of 2010) and GEL, (since the second half of 2010 through 2015). The reason for the step increase is related to the change in the gross beta counting equipment configurations and reference calibration standards used by the AREVA lab and GEL. Both labs use(d) gas proportional counting of the filter element. However, AREVA applied a Cs-137 calibration source while the GEL uses a Tc-99 calibration source. In the case of the AREVA data record, the Cs-137 Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 AREVA applied a Cs-137 calibration source while the GEL uses a Tc-99 calibration source. In the case of the AREVA data record, the Cs-137 detection efficiency (approximately 34%) was applied to the "gross" counts to determine the apparent activity. This inherently presumes that the radioactivity in a field sample is all Cs-137. In the case of the GEL data record, the Tc-99 efficiency (21 %) is applied to the same "gross" counts as if the entire radioactivity in this case is Tc-99. The end result is two different gross beta radioactivity determinations for the same level of environmental activity. In application, this is not an adverse condition in that the gross beta counting is used as a qualitative indicator of changes in environmental conditions, not as a quantitative measure of the actual radioaGtivity since the comparison of the response curves for each monitoring station, including the control station, are similar over time, and the curves indicate that there is no detectable influence from a single nearby point source such as the CNP.
It can be seen in Figure 4.1 that the annual average gross beta air particulate counts from 2012-2013 and from 2013-2014 exhibit a 20%
decrease in both indicator and control locations, each year. No plant related radionuclides were detected on the air particulate composite filters indicating that the changes in the gross beta activity is likely due to
* naturally occurring radionuclides. Air particulate activity sampling can depend upon local weather conditions, global weather patterns as well as sampling methodology. Possible sources of this change to average trend line could be:
* Unusually harsh weather conditions experienced locally which would lock potential airborne radioactivity in frozen soil or under snow,
* Changes (increases) in the local average rainfall which would reduce the amount of airborne particulates.available to influence the air particulate samples,
* Changes in global weather patterns effecting transportation of suspended airborne particulates and deposition due to washout mechanisms, or
* A decrease in the source of manmade background sources, such as past atmospheric nuclear weapons testing or nuclear accidents such as those at Fukushima Daiichi.
Notable in the graph, *shown in Figure 4.2, is a distinct annual cycle. The gross* beta concentrati_on fluctuations over the year were attributed to seasonal changes in the naturally-occurring airborne radioactivity levels.
_,..,This conclusion was based on the similarity in fluctuations noted in gross beta concentrations at both the indicator stations and control stations.
Results for gamma isotopic analyses performed on quarterly composites of the weekly particulate samples have been listed in Table 3.1. The presence of naturally-occurring Be-7 was detected in all of the indicator and control samples. The presence of naturally-occurring Th-228 was Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 detected in one indicator sample, and the presence of naturally-occurring K-40 was detected in one control sample. No other radionuclides were detected in the quarterly composites of the weekly air particulate samples.
Full details of all measurements can be found in Appendix D.
In summary, the information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's "Pre-Operational Radiological Monitoring Program" (PRMP) [see Appendix E] . Also , no significant difference was noted between the average monthly gross beta concentration at the indicator and the control stations. Therefore , the results were not due to plant operations.
Figure 4.1 Mean Annual Gross Beta Concentration in Air Particulate Samples Collected over 10 Years 50.0
                                           ~Al1    lndicatorlocations -    All Control Locations 45.0
  -~
  ..,     40.0 u
  ..,Q. 35.0 6
c0      30.0 Ill c     25.0 Cl>
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c             :      :
0     20.0 u
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()                                  ..
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10.0       :
5 .0  ::
0 .0 2006       2007     2008      2009          2010        2011          2012       2013 2014    2015 Year Donald C. Cook Nuclear Plant                     Annual Radiological Environmental Operating Report 2015 Figure 4.2 Mean Monthly Gross Beta Concentration in Air Particulate Samples Collected in 2015 45.0 40.0
  -E M
ua.        35.0 M
6 I:
0         30.0
  ........ra c:
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                                     - f - ln dica torlocation   - - - Contro l Location 4.4.2 Airborne Iodine Airborne iodine sample media were collected weekly in conjunction with the air particulate sample media replacement.                    These media were analyzed for lodine-131 .
No Iodine was detected above the MDC in 2015.                      Full details of all measurements can be found in Appendix D.
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP.
4.4.3 Groundwater (Well)
Groundwater samples were collected from seventeen well locations on a quarterly frequency and analyzed for gamma isotopic and tritium [See Table 3.1].
The presence of naturally-occurring K-40 was identified in one sample and naturally-occurring Th-228 was identified in two out of sixty-eight samples [See Table 3.1].                       The presence of K-40 and Th-228 in Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 groundwater samples is attributed to natural occurrences since they are not fission or activation products related to plant operations.
Tritium was not detected above the associated MDC in any 2015 groundwater sample.
Figure 4.3 and 4.4 plot the measured activity of tritium , when detected at levels above the MDC. For years where no tritium was detected above the MDC, no values were plotted.
While ground water sampling was not performed as part of CNP's PRMP, the information detailed above was evaluated and found to be consistent with data obtained during the plant's operational history. Therefore, the 2015 results were not due to plant operations.
Donald C. Cook Nuclear Plant                                        Annual Radiological Environmental Operating Report 2015 Figure 4.3 Tritium Detected in Groundwater Over the Past 10 Years 20,000 +..-----------------~--~~~~~~~~~~~ Reporting Level
    'C'
    ~                                                        * .W-1
* W-2      L W-3
* W-4        .* w-s    "J', W-6   = w -7 u
    .e 15,000 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
c:
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0 E
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5,000   +---------------------------------------
NRC Lower Limit of Detection 0  +------~            . . . . . ~~-_,.~~---~~..,...._~~------------------~
             .}an-06 Sample Date Figure 4.4 Tritium Detected in Groundwater Over the Past 10 Years 25,000 . . , - - - - --   - - - - - -- -- - - - -- -- - - --                                          - - - - -- -- - - - - - -
ill W-8   " W-9   ;:: W-10    111 W-11   111 W-12 1:1 W-13     b W-14     -t MW-20
* MW-21
~ 20,000 - - -                                                                                                                               Reporting Level
~
u
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Lower Limit of Detection 0 +------,----.------,---~.---~".---~;.------,----.-----.---~----,
                  .}an-06     .}an-07  .}an-OS       .}an-09        .ian-'\O     .}an*'\'\     .)an-'\'2      .}an*'\~     .}an *'\ 4    .}an-'\ 5     .}an-'\ 6 Sample Date Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 4.4.4  Drinking Water Drinking water samples were collected daily from one indicator and one control station . A 14-day composite was analyzed for gamma isotopic and gross beta radioactivity. A quarterly composite was analyzed for tritium.
A specific lodine-131 low-level analysis performed on all samples indicated that no lodine-131 was present.
Figure 4.5 shows a plot of the tritium data going back twelve years . Only measurements that were detected at levels above the MDC were plotted.
No tritium was detected in drinking water samples in 2015 [See Table 3.1].
During 2015, the presence of gross beta radioactivity was not identified in any indicator or control samples. Two indicator samples contained naturally-occurring K-40 . [See Table 3.1 and Appendix DJ.
One control sample detected Thorium-228 . The presence of Th-228 in the drinking water sample is attributed to natural occurrences since it is not a fission or activation product related to plant operations.
No other gamma-emitting nuclides were identified in any 2015 samples .
While drinking water sampling was not performed as part of CNP's PRMP, the information detailed above was evaluated and found to be consistent with data obtained during the plant's operational history.
This information supports the conclusion that these occurrences were not attributable to plant operations.
Donald C. Cook Nuclear Plant                       Annual Radiological Environmental Operating Report 2015 Figure 4.5 Tritium Detected in Drinking Water Over the Past 12 Years Reporting Level
  'C' s~      15,000 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
0
 .sc:
0 I u 10,000 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
c:
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E
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 ~
* StJo~ph
* l ake Township 6,000 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Low er Limit of Det ection 0 +----,---~---..,--~-~--~--~---,------,----,---,.----,-
Ja"..()4 Ja"..os Ja"..06 Ja"..01 Ja"..os Ja"..09 Ja"*"o Ja"*"" Ja"*"l Ja"*"3 Ja"*"* Ja"*"s Ja"*'\6 Sample Date 4.4.5    Surface Water Surface water samples were collected daily from two indicator locations, when available (See section 4.1 for sampling deviations) . Monthly composites were analyzed for gamma-emitting radionuclides and quarterly composites were analyzed for tritium . No tritium or gamma emitting radionuclides were detected above the MDC in any
* of the samples collected in 2015 [See Table 3.1].
The information detailed above was evaluated and found to be consistent with data obtained during past operational periods and the conduct of CNP's PRMP. There was no impact to this sample medium from plant operations in 2015.
4.4.6    Sediment Semiannual samples of lake sediments were collected from two indicator stations and analyzed for gamma-emitting nuclides.                           During 2015, naturally-occurring K-40 was detected in all four samples and Th-228 was detected in three sediment samples. Additionally, two samples contained Ac-228. These radionuclides are expected as part of the naturally-Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 occurring thorium decay series. No other gamma-emitting nuclides were detected in any of the samples collected in 2015. Unlike many past operational and pre-operational periods where traces of Cs-137 were found , no detectable Cs-137 was identified in 2015 samples [See Table 3.1).
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP and the presence of naturally-occurring radionuclides (K-40 and Ac!Th-228) was not attributed to plant operation.
4.4.7  Milk Milk samples were not collected during 2015, as milking operations ceased at the indicator farm (Shafer) in September 2014, and at the control farm (Livinghouse) in October 2014.
Condition Report 04351048 and AR 2011 -13312-1 had previously been written to document the milk farm events and to validate the adequacy of the broadleaf and milk sampling process.
4.4.8  Food Products & Vegetation Vegetation samples (broadleaf) analyzed for gamma-em itting nuclides identified the presence of naturally-occurring Be-7 and K-40 in all samples from both indicator and control locations. One indicator station sample contained Th-228, a daughter of the naturally occurring Ac-228.
Three indicator samples contained trace levels of Cs-137. The indicator samples ranged from 18.0 to 28.6 pCi/kg [See Table 3.1). ARs 2015-9219 and 2016-0077 were written to document the occurrences for tracking purposes. Although the presence of Cs-137 is consistent with historical data, pre-operational samplings of broadleaf media were not collected before CNP construction . The historical results for this media indicate that the presence of Cs-137 could be the result of atmospheric weapons testing . The presence of Cs-137 was noted in 2011 after the Fukushima disaster. AR 2011-4952 was written in response to the 2011 samples. The Cs-137 detected is not considered to be a result of CNP gaseous effluents, as this result is consistent with historical data, and there were no Cs-137 releases from 2010 through 2014, with only one ten (10) minute release containing Cs-137 in 2015.
One annual sample of food products (grapes) each from an indicator and a control location was analyzed for gamma-emitting nuclides. Analysis identified only the presence of naturally-occurring K-40 and Be-7 [See Table 3.1] in both indicator and control samples. While food product sampling was not performed as part of CNP's PRMP, the information detailed above was evaluated and found to be consistent with data obtained during the plant's operational history. The presence of the naturally-occurring detected radionuclides was not attributed to plant operations.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 4.4.9   Fish REMP Fish samples were collected on two occasions at two indicator and two control locations. Naturally-occurring K-40 was detected in all the samples. Trace levels of Cesium-137 were observed in three indicator and two control samples [See Table 3.1 ]. Additionally, non-RE MP perch, salmon, and trout sampling was initiated in the third quarter of 2011. One of the two non-REMP indicator samples (salmon) had a trace level of Cs-137 (16.7 pCi/kg) and both samples had naturally occurring K-40. ARs 2015-12765, 2015-11188 and 2016-4475 were written to document the occurrences for trending purposes.
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP and during the plant's operational history. With the historical detection of similar trace levels of radioactivity in both the indicator and control samples, the presence of the detected radionuclides was not attributed to plant operation.
4.4.10 Gamma Exposure Rate Direct radiation was continuously measured at 27 locations surrounding CNP with TLDs. All TLDs were collected quarterly and processed by Stanford Dosimetry at the Environmental Dosimetry Company laboratory in Sterling, Massachusetts.
The results in Tables 3.2 and 3.3 show that the mean exposure rates for the onsite and offsite categories were not significantly different in total for 2015. As shown in Figure 4.6, there is a similar annual cycle at both onsite and offsite locations. The lowest point of the cycle typically occurred during the winter months. This is attributed primarily to the attenuating effect of the snow cover and frozen ground on radon emissions and on direct irradiation by naturally-occurring radionuclides in the soil. Also contributing to the variation in radiation levels at different field sites was the varying distribution of radionuclides in the underlying soil, rock or nearby building materials. Figure 4.7 illustrates that the average trend line over the last ten years for the offsite stations runs slightly higher than that for the onsite stations, suggesting that there is no detectable plant component of direct radiation that can be seen above the natural background exposure rate .
In July 2010, the Environmental Dosimetry Company assumed responsibility for calibration and processing of the TLDs used for these activities. The Panasonic Model UD-814 AS4 TLDs that had historically been used to measure direct radioactivity around CNP continued to be in use.
The information detailed above was evaluated and found to be consistent with data obtained during the conduct of CNP's PRMP.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Figure 4.6 Direct Radiation - Quarterly TLD Results 12.0
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0.0 2                                  3                    4 Measurement Quarter Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Figure 4.7 Direct Radiation, Annual Summary Ten Years Historical Trend 20 1.*:.*:****On-Site 18                                                                  t{*:*!&sect;~1 Off-Site 16 14 Cl>
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2 2004 2005 2006 2007 2008 2009 2010 201 1 2012 2013 2014 2015 Year 4.4.11 Additional Sample Analysis (non-ODCM required samples)
Groundwater (Radioactive Equipment Storage Facility, Steam Generator wells) - Two one-liter well water samples were taken at 4 locations quarterly. These samples were analyzed for tritium by GEL. The samples are also analyzed for gamma, gross beta, and gross alpha for tracking purposes [see Appendix D] . Measured tritium activities in the samples were all found to be less than the MDC . No plot for this data was possible because since 2007, there has been no positive identification of tritium in the wells SG-1 through SG-5. Tritium in these wells is also being tracked by the CNP Groundwater Protection Initiative and is discussed further in Appendix F.
Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 5.0    OFF-SITE DOSE EQUIVALENT COMMITMENTS
      *The purpose of this section is to evaluate off-site dose consequences (dose equivalent commitments) associated with CNP radioactive liquid and airborne effluents. The method utilizes Regulatory Guide 1.109/0DCM models and actual measurements of the concentrations of radioactivity in environmental media to compute the dose consequences resulting from the consumption of these foods. The doses are based on an assumption that the individuals consume fish or broadleaf vegetation year round at the respective average Cs-137 concentrations determined during 2015. The maximum consumption rates from Regulatory Guide 1.109 are also assumed, although the consumption fraction was conservatively assumed to cover the entire time period in which Cesium was measured in the broadleaf samples.
The dose commitments calculated in this section are compared to the ALARA dose objectives of 10 CFR 50 Appendix I for liquid and/or gaseous effluents. These standards are a fraction of the average USA background radiation of 300 mrem per year given iri NCRP 94 (Reference 2).
Trace levels of Cesium-137 were detected in five REMP fish samples (Table 3.1) and one non-REMP fish sample and are detailed in Table 5.1 and dose summarized in Table 5.3. The concentrations ranged from 7.02 to 22.6 pCi/kg, all of which are well below the required LLD of 150 pCi/kg. The presence of this radionuclide was determined to not be the result of operations at the CNP. Given that, the dose impacts from ingestion of the*
radionuclide yielded a maximum dose of 2.23E-02 mrem/year total body (for the adult age group) and 3.54E-02 mrem/year to the liver (for the teen age group). This represents 0.74% and 0.35% of the total body and organ dose objectives of 10 CFR 50 Appendix I (3 mrem/yr and 10 mrem/yr, respectively).
Table 5.1: Cs-137 Concentration in Fish Samples Concentration Media      Station       Sample                       Date (pCi/kg)
Fish      OFS-N       374475001          14.3       6-3-15 Fish*     ONS-N       374475002          7.02       6-3-15
                 , Fish      ONS-S       374475003          20.9       6-3-15 Fish      OFS-N       377953001          7.58      7-23-15 Fish      ONS-N'      377953002          22.6      7-23-15 Fish    SLM5WNW 377393001                16.7      7-16-15 Trace levels of Cesium-137 were detected in three broadleaf vegetation samples (Table 3.1) and are detailed in Table 5.2 with doses summarized below in Table 5.3. The concentrations ranged from 18.0 to 28.6 pCi/kg, all of which are well below the required LLD of 60 pCi/kg. The presence of this radionuclide was determined to not be the result of operations at the CNP and none of the samples were from plants that are commonly eaten. Given that, the dose impacts from ingestion of the radionuclide yielded a total body dose of 2.75E-02 mrem/year (for the adult age group) and total critical organ dose of 5.11 E-02 mrem/year to the bone (for the child age group). This represents 0.55% and 0.34% of the total body and organ dose objectives of 10 CFR 50 AppE?ndix I (5 mrem/yr and 15 mrem/yr respectivel_y).
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Table 5.2: Cs-137 Concentrations in Broadleaf Samples Concentration Media       Station      Sample                         Date (pCi/kg)
Broad leaf  ONS3-V 377009001               25.5         7-10-15 Broad leaf  ONS3-V 381112003               28.6         9-11-15 Broad leaf  ONS1-V 375227004               18.0         6-15-15 Average                              24.0 Table 5.3, below, summarizes each of the dose commitments calculated for each of the media, that had positive results for radionuclides that are not naturally occurring.
Table 5.3: Summary of Off-Site Dose Commitments Limiting Organ    Organ Dose      Whole Body Dose Media     Radionuclide
[age group]      (mrem/yr)         (mrem/yr)
Fish         Cs-137        Liver [Teen]      3.54E-02          2.23E-02 Broad leaf      Cs-137        Bone [Child]      5.11E-02          2.75E"'.02 Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating* Report 2015
(
6.0      

==SUMMARY==
OF REMP, ODCM, AND VENDOR PROCEDURE CHANGES The ODCM was revised in 2015; changes to the ODCM are documented in the following table.
Procedure No.:      PMP-601 O-OSD-001                                     Rev. No.:      25

==Title:==
Off-Site Dose Calculation Manual Alteration                                         Justification 10 CFR 50.59 is not applicable to this             Per definition in Attachment 1 of PMP-2010-procedure revision.                                PRC-002. This is an administrative procedure .
governing the conduct of fac,;ility operations.
Changes to this document are made in accordance with Technical Specification 5.5.1 and implemented through 12-EA-6090-:ENV-114, Effectiveness Review for ODCM/PCP Programs.
Step 2.1.2.j: Added supplemental information       Enhancement to provide clarity on the of the calculation of dose attributed to carbon-   variables that would be utilized for calculating
: 14.                                                C-14 dose. (AR #2015-1439)
Step 2.1.2.k.3: Added usage of installed           Enhancement which reflects the installation of blowdown flow instrumentation as an                modern technology allowing for more accurate acceptable method for obtaining flows.             flow measurements of blowdown. The data are obtainable on the Plan~ PPG computers.
This change does not involve a change of procedural intent and reflects an improvement in measuring flows.
Step 2.4.1: Added specific mention of the dry      Enhancement to ensure it is clearly understood cask storage facility (ISFSI) and the need to      that the direct radiation dose to the public is a incorporate the dose from it with our dual unit    combination of that from our dual unit site and site data.                                         the dry cask storage facility operated under a separate license. (AR #2015-1439)
Step 2.7.2: Revised verbiage throughout the        Enhancement which clarifies the deadline to step to change wording from "by May 1" to          provide the NRG the ARERR, based upon .
  "prior to May 1."                                  industry operating experience. This change does not involve a change of procedural intent.
(AR #2015-1439)
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Opei.:ating Report 2015 Alteration                                       Justification Attachment 3.19: Corrected distance              NUREG 1301 uses kilometers and an error referenced and made clarification of the sector was made where the unit conversion from criteria where broadleaf sampling was            kilometers to miles did not converfthe actual required, reflecting NUREG 1301 more             number but only the unit. The value of 8 accurately.                                      kilometers  equals 5 miles. Adjusted the broadleaf distances to approximate mile equivalents of NUREG 1301 guidance given kilometers.
The clarification on the broadleaf sampling involved and NRG Branch Technical Position having different verbiage than NUREG 1301.
The previous revision reflected .the verbiage from the Branch Technical Position. The change made here reflects the verbiage in NUREG 11301 and clearly states that samples from two different sectors with the highest D/Q are required. This does not involve a change in procedural intent and simply clarifies the process of broadleaf sample. (AR #2015-1861)
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 The following changes were made to the REMP procedures in 2015:
Procedure No.:       12-THP-6010-RPP-630
                    ~~~~~~~~~~~~~~~~~-
Rev. No.:     8 Tit Ie:               Collection of REMP Surface Water Samples Alteration                                       Justification Removed Data Sheet 1, Documentation of            Per QHSA recommendation GT 2014-10583-1.
Unavailable Samples, and Pata Sheet 2, D.C.       These Data Sheets have been moved to 12-Cook Nuclear Plant Sample Collection Data         THP-RPP-643, Quarterly Review of Sheet.                                            Radiological Environmental Monitoring Program (REMP) Data.
Step 3.2: Added procedure reference for 12-       Clearly identify location of where Data Sheet 1 THP-601 O-RPP-643 Data Sheet 1.                   has been moved.
Step 4.1.2: Added procedure reference for         Clearly identify location of where Data Sheets 12-THP-6010-RPP-643 Data Sheets 1 and 2.          1 and 2 have been moved.
Step 4.3: Last bullet, added procedure            Clearly identify location of where Data Sheet 2 reference for 12-THP-601 O-RPP-643 Data           has been moved.
Sheet 2.
Step 4.4.5: Added procedure reference for         Clearly identify location of where Data Sheet 2 12-THP-6010-RPP-643 Data Sheet 2.                 has been moved.
Step 4.4.6: Added procedure reference for         Clearly identify location of where Data Sheet 2 12-THP-6010-RPP-643 Data Sheet 2.                 has been moved.
Step 6.3: Added procedure reference for 12-       Clearly identify location of where Data Sheet 1 THP-601 O-RPP-643 Data Sheet 1.                   has been moved.
Added Reference 7.1.2, 12-THP- RPP-643,           References are made within the body of Quarterly Review of Radiological                  procedure due to moving Data Sheets to 12-Environmental Monitoring Program (REMP)           THP- RPP-643.
Data.
Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Procedure No.:       12-THP-60*10-RPP-632                              Rev. No.:     11

==Title:==
Collection of Environmental Air Samples Alteration                                    Justification Step 2.3: Changed reference location of Data Corrected reference due to moving Data Sheet 2, D.C. Cook Nuclear Plant Sample          Sheets from 12-THP-6010-RPP-630 to 12-Collection Data Sheet.                           rrHP--601 O-RPP-643.
Step 3.2: Changed reference location of Data Corrected reference due to moving Data
 . Sheet 1', Documentation of Unavailable           Sheets from 12-THP-6010-RPP-630 to 12-Samples.                                         THP-601 O-RPP-643.
Step 4.1.3: Changed reference location of .      Corrected reference* due to moving Data Data Sheet 1, Documentation of Unavailable       Sheets from 12-THP-6010-RPP-630 to 12-Samples, and Data Sheet 2, D.C. Cook             THP-601 O-RPP-643.
Nuclear Plant Sample Collection Data Sheet.
Step 4.4.2: Changed reference- location of
* Corrected reference due to moving Data Data Sheet 2, D.C. Cook Nuclear Plant            Sheets from 12-THP-6010-RPP-630 to 12-Sample Collection Data Sheet.                    THP-601 O-RPP-643.
Step 4,4.3: Changed reference location of
* Corrected reference due to moving Data Data Sheet 2, D.C. Cook Nuclear Plant          *Sheets from 12-THP-6010-RPP-630 to 12-Sample Collection Data Sheet.                    THP-601 O-RPP-643.
Step 6.1 : Changed reference location of Data Corrected reference due to moving Data Sheet 2, D.C. Cook Nuclear Plant Sample          Sheets from 12-THP-6010-RPP-630 to 1.2-Collection Data Sheet.                           THP-601 O-RPP-643.
Updated Use Reference 7.1.2 to 12- THP--         Corrected reference due to moving Data 601 O-RPP-643.                                    Sheets from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643'.
Removed all information regarding the AVS- Per SME recommendation.
100 totalizers that are no longer used. These changes are not margin-marked.
* Donal~   C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Procedure No.: ' 12-THP-601 O-RPP-633                                 Rev. No.:     7

==Title:==
Collection of Environmental Radiation Dosimeters Alteration                                   Justification Step 2.3: Updated procedure referenced from Changed location of the referenced Data 12-THP-6010-RPP-630 to 12-THP-6010-RPP- Sheets per OHSA recommendation, GT 2014-643 for Data Sheet 2.                           10583-1.
Step 3.2: Updated procedure referenced from Changed location of the referenced Data 12-THP-6010-RPP-630 to 12-THP-6010-RPP- Sheets per OHSA recommendation, GT 2014-643 for Data Sheet 1.                           10583-1.
Steip 4.1.3: Updated procedure referenced       Changed location. of the referenced Data from 12-THP-6010-RPP-630 to 12-THP-6010- Sheets per*OHSA recommendation, GT 2014:.
RPP-643 for Data Sheets 1 and 2.                10583-1.
Steip 4.2.4: Updated procedure referenced       Changed location of the referenced Data from 12-THP,.6010-RPP-630 to 12-THP-6010- Sheets per OHSA recor:nmehdation, GT 2014-RPP~643 for Data Sheet 2.                       10583-1.
Step 4.2.6: Updated procedure referenced        Changed location of the referenced Data from 12-THP-6010-RPP-630 to 12-THP-6010- Sheets per OHSA recommendation, GT 2014-RPP-643 for Data Sheet 2.                       10583-1.
Step 4.2.7: Updated procedure referenced        Changed location of the referenced Data from 12-THP-6010-RPP-630 to 12-THP-6010- Sheets per OHSA recommendation, GT 2014-RPP-643 for Data Sheet 2.                       10583-1 .
 .Step* 6.3: Updated procedure referenced from Changed location of the referenced* Data 12-THP-6010:.RPP-630 to 12-THP-6010-RPP- Sheets per OHSA recommendation, GT 2014-643 for Data Sheet 1.                           10583-1.
Step 7 .1.2: l)pdated Use Reference to 12-      Changed location of the referenced Data THP-RPP-643, Quarterly Review of                Sheets per OHSA recommendation, GT 2014-Radiological Environmental Monitoring           10583-1.
Program (REMP) Data.
Updated Attachment *3 referenced Data Sheets Changed location of the referenced Data 1 and 2 to 12-THP-RPP--643. .                   Sheets per OHSA recommendation, GT 20t4-10583-1.
Revision Summary, added 10CFR50.59              SMR recommendation.
statement bf applicability.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Procedure No.:     12-THP-6010-RPP-634                            Rev. No.:     13

==Title:==
Collection of REMP Groundwater Samples Alteration
* Justification Step 3.4: *updated Use Reference to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.1.2: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.4.3: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.5.4: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.5.5: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.8.4: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           this moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.9.1: Updated Use Reference to 12-     Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                           *his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.9.2: Updated Note to reference PMP- Per*QHSA recommendation GT 2014-10583, 3130-SMC-005 for Data Sheet 1, Shipping      !his moved Data Sheets 1 and 2 from 12-THP-Memorandum.                                  601 O-RPP-630 to 12-THP-601 O-RPP-643 Correct Use Reference.
Step 6.1: Updated Use Reference to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Reference - Updated Use Reference 7.1.2 to Correct User Reference.
PMP-3130-SMC-005 . .,
Reference - Updated Use Reference 7.1.3 to* Per QHSA recommendation GT 2014-10583, 12-THP-6010-RPP-643, Quarterly Review of ~his moved Data Sheets 1 and 2 from 12-THP-Radiological Environmental Monitoring        6010-RPP-630 to 12-THP-6010-RPP-643.        I Program (REMP) Data. .
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-601 O-RPP-635                              Rev. No.:       6

==Title:==
Collection of Milk Samples Alteration
* Justification Step 3.2, Changed use procedure 12-THP-       Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2
                                                ~ram 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.1.1, Changed use procedure _12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 Wrom 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.1.2, Changed use procedure 12-THP- Per OHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 Wrom 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.2.3, Changed use procedure 12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2
                                                ~ram 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.2.4, Changed use procedure 12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.3.1, Changed use procedure 12-THP- Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 ram 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.                              .
Step 6.1, Changed use procedure 12-THP-        Per QHSA recommendation from GT 2014-601 O-RPP-643.                                 10583. Moved Data Sheet 1 and Data Sheet 2 ram 12..THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 6.2, Changed use procedure 12-THP-        Per OHSA recommendation from GT 2014-6010-RPP-643.                                  10583. Moved Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Use Reference 7.1.3 changed to 12-THP-         Per QHSA recommendation GT 2014-10583, 601 O-RPP-643, Quarterly Review of             this moved Data Sheets 1 and 2 from 12-THP-Radiological Environmental Monitoring          6010-RPP-630 to 12-THP-6010-RPP-643.
Program (REMP) Data.
Attachment 1 under Indicator Farms - deleted No longer available. These farmers have Shafer and Livinghouse Farms.                  recently retired. This is a correction per PMP-Attachment left blank for future use.          2010-PRC-002. (AR 2014-11607)
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-636                             Rev. No.:     5

==Title:==
Collection of Fish Samples Alteration                                   Justification Step 3.2: Changed Use Procedure to 12-THP Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                  this moved Data Sheets 1 and.2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.1.2: Changed Use Procedure to 12-        Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                              ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.2.4: Changed Use Procedure to 12-       per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                              ~his moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.3.1: Changed Use Procedure to 12-        Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                               his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 6.1: Changed Use Procedure to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                  ~his moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 6.2: Changed Use Procedure to 12-THP- Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                  ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Use Reference 7.1.2 updc;ited to 12-THP-6010 Per QHSA recommendation GT 2014-10583, RPP-643, Quarterly Review of Radiological       this moved Data Sheets 1 and 2 from 12-THP-Environmental Monitoring Program (REMP)         601 O-RPP-630 to 12-THP-601 O-RPP-643.
Data.
Deleted Figure 1                                Per SME recommendation. Procedure enhancement, figure was outdated.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-637                                 Rev. No.:     8

==Title:==
Collection of REMP Lake Se,diment and Soil Samples Alteration                                 Justification Step 3.3, Updated Use reference to         Per OHSA recommendation from GT 2014-12-THP- 6010-RPP-643.                      10583 to move Data Sheet 1 and Data Sheet 2 from 12:.THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 3.4, Updated Use reference to         Per QHSA recommendation from GT 2014-12-THP- 6010-RPP-643.                      10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 3.5 Changed wording from              eSAT is the old CAP. Allows for ease of use.
   "initiate an eSAT report" to "initiate a Condition Report" Step 4.1.2, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                     10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.2.4, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                     10583 to rriove Data Sheet ,1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-
           <                                  601 O-RPP-643.
Step 4.2.6, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-6010-RPP-643.                      10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step4.2.8, Updated Use reference to        Per QHSA recommendation from GT 2014-12-THP-6010-RPP-643.              -        10583 to move Data Sheet 1 and Data Sheet 2 from-12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.3.7, Updated Use reference to       Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                     10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.4.4 Changed eSAT to                 eSAT is the old CAP. Allows for ease of use.
Condition Report.
Donald C. Cook Nuclear Plant         Annual Radiological Environmental Operating Report 2015 Alteration                                  Justification Step 6. 1, Updated Use reference to 12-     Per QHSA recommendation from GT 2014-THP- 601 O-RPP-643.                         10583 to move Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-THP-
* 601 O-RPP-643.
Use Reference 7.1.3, Updated to 12-         Per QHSA recommendation from GT 2014-THP- 601 O-RPP-643, Quarterly Review o      10583 to move Data Sheet 1 and Data Sheet Radiological Environmental Monitoring       2 from 12-THP-6010-RPP-630 to 12-THP-Program (REMP) Data.                        601 O-RPP-643.
Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Procedure No.:     12-THP-6010-RPP-637                           Rev. No.:     9

==Title:==
Collection of REMP Lake Sediment and Soil Samples Alteration                                 Justification Updated Use Reference 7.1.2 to currently    Old MMD reference no longer exists.
used reference.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-638                             Rev. No.:     8

==Title:==
Collection of Grape and Broadleaf Samples Alteration                                   Justification Step 3.1, Updated Use Reference to           . Per QHSA recommendation from GT 2014-12- THP-601 O-RPP-643.                         10583 that moved Data Sheet 1 and Data Sheet 2 from 12-THP-6010-RPP-630 to 12-Step 4.1.2, Updated Use Reference to           THP-601 O-RPP-643.
12- THP-601 O-RPP-643.
Step 4.2.5, Updated Use Reference to 12- THP-601 O-RPP-643.
Step 4.2.6, Updated Use Reference to 12- THP-6010-RPP-643.
Step 4.3.1, Updated Use Reference to 12- THP-601 O-RPP-643.
Step 6.1, Updated Use Reference to 12- THP-601 O-RPP-643.
Updated Use Reference 7.1.3, 12-THP- 601 O-RPP...:643, Quarterly' Review of Radiological Environmental Monitoring Program (REMP) Data.
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-601 O-RPP-638                                Rev. No.:     9

==Title:==
Collection of Grape and Broadleaf Samples Alteration                                      Justification Steps 4.2 through 4.2.5: Revised verbiage in Per industry SME recommendation, procedural this section of the procedure to reflect recent ~nhancements have been made to more changes to NUREG 1301.                           accurately reflect the recent changes to NUREG 1301 for environmental sample. See AR 2015-1861 for detailed clarification.
Donald C. Cook Nuclear Plant      Annual Radiological Environmental Operating Report 2015 Pr9cedure No.:    12-THP-6010-RPP-640                          Rev. No.:     7

==Title:==
Land Use Census Alteration                                 Justification Step 3.2: Revised wording.                Per AR 2015-1861-2, change made to match the ODCM verbiage in PMP-6010-0SD-001.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-642                              Rev. No.:     8

==Title:==
Collection of Drinking Water Samples Alteration                                   Justification Step 3.2: Changed Use Procedure to 12-THP-Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                   ~his moved Data Sheets 1 and 2 from 12-THP-601 O-RPP-630 to 12-THP-601 O-RPP-643.
Step 4.1.2: Changed Use Procedure to 12-         Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.4.1: Changed U&e Procedure to 12-       'Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                              .~his moved Data Sheets 1 and 2 from 12-THP-6010-RPP-630 to 12-THP-6010-RPP-643.
Step 4.4.3: Changed Use.Procedure to 12-         Per QHSA recommendation GT 2014-10583, THP-601 O-RPP-643.                               ~his moved Data Sheets 1 and 2 from 12-THP-6010~RPP-630  to 12-THP-6010-RPP-643.
Step 6.1: Changed Use Procedure to 12-THP-Per QHSA recommendation GT 2014-10583, 601 O-RPP-643.                                   ~his moved Data Sheets 1 and 2 from 12-TH.P-
* 6010-RPP-630 to 12-THP-6010-RPP-643.
Step 6.4: Changed Use Procedure to 12-THP-Per QHSA recommendation GT 2014-10583,.
601 O-RPP-643.                                   this moved Data Sheets 1 and 2 from 12-THP-
                                               . 601 O-RPP~630 to 12-THP-6010-RPP-643.
Use Reference 7.1.1 updated to 12-THP-601 o Per QHSA recommendation GT 2014-10583, RPP-643, Quarterly Review of Radiological        this moved Data Sheets 1 and 2 from 12-THP-Environmental Monitoring Program (REMP)          601 O-RPP-630 to 12-THP-601 O-RPP-643.
Data.
Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Procedure No.:      12-THP-6010-RPP-643                               Rev. No.:     9

==Title:==
Quarterly Review of Radiological Environmental Monitoring Program (REMP) Data Alteration                                      Justification Updated TOC to include changing Data Sheet Per Supervisor's recommendation.
1 to Data Sheet 3, REMP Quarterly Data Review.
Added Data Sheet 1, Documentation of            Per OHSA recommendation from GT 2014-
 .Unavailable Samples, and Data Sheet 2, D.C. 10583-2.
Cook Nuclear Plant Sample Collection Datc;i Sheet.
Step 2.1: Removed the old procedure             Procedural clarification.
reference to reflect changes to current procedure:
* Step 3.1: Updated the Data Sheet number         To reflect the correct Data Sheet usage.
from Data Sheet 1 to Data Sheet 3.
Step 4.1: Updated the Data Sheet number         To reflect the correct Data ~heet usage.
from Data Sheet 1 to Data Sheet 3.
Step 4.4.3: Updated the Data Sheet number To reflect the correct Data Sheet usage.
from Data Sheet 1 .to Data Sheet 3.
Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 There was one revision to procedures for the Environmental Dosimetry Company in 2015.
Procedure No.:      1052
                   ~~~~~~~~~~~~~~~~~~~
Rev. No.:       1

==Title:==
Panasonic TLD Badge Assignment Alteration                                     Justification Editorial change only                           Due to review cycle only - no technical changes made.
Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 Table 6.1 below summarizes the changes made by GEL to the procedures that are used for the Donald C. Cook Nuclear Plant REMP.
* Table6.1 GEL Laboratories, LLC Updated Procedures for Support of Nuclear Power Plants Calendar Year 2015 l~sue        DIRR Sop#            Rev                         Sop Title Date         Type Preparation, Authorization, Advance Change, GL-ADM-E-001          17     Revision, Release, and Retirement of Standard      9-Apr-15   Revision Operating Procedures
. G~-CHL-B-016           2     PNNL Monthly Records Checklist                   20-Nov-15    Change Alpha Spec Instrument Calibration Package GL-CHL-B~026           0                                                        21-Jul-15  Revision Review Checklist
                              *Alpha Spec Instrument Calibration Package GL-CHL-B-026           1                                                        6-Aug-15   Revision Review Checklist GL-CHL-B-027           1     Bioassay Sample Receipt and Review Form           26-Feb-15   Change GL-CHL-RAD-015       *o      Recounts Ra-226 Checklist                         28-Ja.n-15  Deletion SHAW Ra-226 Manual Calculation Verification GL-CHL-RAD-017         1                                          J 28-Jan-15   Deletion Checklist Radiation and Contamination Survey Review GL-CHL-RAD:022         0                                                       19-Feb-15   Deletion
* Tracker, GL-CH L-RAD-024 ,      7     Sealed Source Leak Check Tracker Checklist        19-Feb-15   Deletion GL-CHL-SR-001          0     Sample Receipt and Review Fo.rrr:i
* 11-Mar-15. Revision GL~CHL-SR-001          1     Sample Receipt and Review Form                   26-Aug-15    Revision internal Review of Contractually Required GL-CS-E-002            8                                                        8-Apr-15   Revision Quality Criteria for Client Package Delivery  ,,
GL-CS-M-001            6     Project Management AlphaLIMS Manual                15-JLil-15 Revision GL-DC-E-001*          16     Doc*ument Control                                 22-Jun-15   Revision GL-FS-E-005            0     CME"45 B Drilling Rig                             28-Apr-15   Deletion GL-FS-E-006            2     Hydrolab Datasonde 4a Operation                   28-Apr-15   Deletion GL-GC-E-011           12     Total Solids                                     24-Mar-15    .Revision Carbonaceous Biochemical Oxygen Demand GL-GC-E-028           21                                                      13-May-15    Revision (CBOD)
Carbonaceous Biochemical Oxygen Demand GL-GC-E-028           22                                                       14-Sep-15. Revision (CBOD)
Alkalinity: Total, Bicarbonate, Carbonate, GL-GC-E-033           11                                                       25-Sep-15   Revision Hydroxide, and Phenolphthalein Fecal Coliform Most Probable Number GL-GC-E-034           10                                                      25-Mar-15    Deletion (Colilert-18 Quanti-Tray)
Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Issue       DIRR Sop#          Rev                        Sop Title Date        Type GL-GC-E-035         11     Volatile Suspended Solids                       2'9-Apr-15  Change Colorimetric Determination of Hexavalent GL-GC-E-044         19                                                     25-Feb-15   Revision Chromium Colorimetric Determination of Hexavalent GL-GC-E-044         20                                                      7-Apr-15   Revision Chromium GL-GC-E-045         23     Biochemical Oxygen Demand {BOD)                13-May-15    Revision GL-GC-E-045         24     Biochemical Oxygen Demand (BOD)                 15-Sep-15   Revision GL-GC-E-047         15     Methylene Blue Active Subst.ance                17-Feb-15   Revision GL-GC-E-047         16     Methylene Blue Active Substance                  8-Apr-15   Revision GL-GC-E-047         17     Methylene Blue Active Substance                26-Aug-15    Revision GL-GC-E-047         18     Methylene Blue Active Substance                 29-Sep-15   Revision Heating Value Determination by Bomb GL-GC-E-048          8                                                      6-Apr-15   Change Calorimeter Heating Value Determination by Bomb GL-GC-E-048          9                                                      3-Jun-15   Revision Calorimeter GL-GC-E-050         12     Threshold Odor                                 11-Nov-15    Revision Volatile Solids and% Ash Procedure for Water GL-GC-E-057          9                                                    24-Mar-15    Revision Samples Chemical Oxygen Demand (COD) - Digestion GL-GC-E-061         18                                                     13-Apr-15   Revision Reactor Method Total Coliform and E.coli by Most Probable GL-GC-E-063          8     Number and Presence/Absence (Colilert and      25-Mar-15    Deletion Colilert Quanti-Tray)
GL-GC-E-067         19     Cyanide Sample Distillation                     27-Jan-15   Revision GL-GC-E-067         20     Cyanide Sample Distillation                    17-Mar-15    Revision GL-GC-E-082         11     Acid-Soluble Sulfides                           25-Sep-15   Revision GL-GC-E-086         23     Ion Chromatography (IC}                        19-Mar-15    Revision GL-GC-E-086         24     Ion Chromatography (IC}                        22-Dec-15    Change GL-GC-E-090          9     Acidity                                        14-Aug-15    Revision GL-GC-E-090         10     Acidity                                         25-Sep-15   Revision Total, Total Inorganic, and Total Organic GL-GC-E-093         12     Carbon {TOC) Using the 01 Analytical Model         1-Jul-15 Revision 1010 TOC Analyzer GL-GC-E-101          8     Hydrazine                                       28-0ct-15   Deletion New GL-GC-E-132          0     Hexavalent Chromium By Lachat                    21-Jul-15 Document GL-HR-E-002         17     Employee Training                              10-Dec-15    Revision Donald   c: Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Issue       DIRR Sop#           Rev                        Sop Title D~te        Type Change Control Requirements for Hardware GL-IT-E-004            4                                                        4-Feb-15  Revision and Software User Roles and Responsibilities for Personnel GL-IT-E-007            1                                                       30-Jun-15  Revision Using Computer Services GL-IT-E-011            4      System Security and Virus Protection              4-Feb-15  Revision Operation of LIMS Database Primary and GL-IT-E-015            2                                                       13-Apr-15  Revision Failover Servers The Determinatiqn of Method Detection GL-LB-E-001           14                                                        9-Apr-15  Revision Limits The Determination of Method Detection GL-LB-E-001           15                                                       16-Apr-15  Revision Limits GkLB-E-002             8      Balances                                       *17-Mar-15   Revision GL-LB-E-002            9      Balances                                        30~Mar-15   Revision GL-LB-E-002           10      Balances                                        30-Apr-15   Change Gl-LB-E-003           :17     Glassware Preparation                             8-Sep-15  Revision Temperature Monitoring.and Documentation GL-LB"E-004           11      Requirements
                               .             for Refrigerat'ors, Freezers,     20-Janw15  Revision Ovens, Incubators and Other Similar Devices GL-LB-E-005           10      Data Review and Validation                        8-Sep-15  Revision Basic Requirements for the Use and Maintenance of Laboratory Notebooks, GL-LB-E-OOS .          9                                                      24-Aug-15   Revision Logbooks, Forms and Ottier Recordkeeping Devices GL-LB-E-009            4      Run Logs                                       *16-Dec-15 Change Maintenance (!nd _Use of Air Displacement GL-LB-E-010            6                                                      17-Mar-15   Revision
                            . Pipettes The Collection and Monitoring of the DI Water GL-LB-E-016            ~                                                        8-Apr-15  Revi~ion Systems GL-LB-E-027            5      Bioassay Kit Delivery and Retrieval              24-Jun-15  Revision GL-LB-G-001           20    . Laboratory Waste Management Plan                  24-Jul-15 Revision GL-LB-N-001           16      Safety, Health and Chemical Hygiene Plan          7-Apr-15  Change GL-LB-N-001           17      Safety, Health and Chemical Hygiene Plan          24-Jul-15 Revision GL-LB-S-001            3      Disaste_r Preparedness and Recovery Plan          19-Jul-15 Revision Acid Digestion ofTotal*Recoverable or GL-MA-E-006           11      Dissolved Metals in Surface and Groundwater     19wFeb-15   Revision.
Samples for Analysis by ICP or ICP-MS Acid Digestion ofTotal Recoverable or GL-IVIA-E-006         12      Dissolved Metals in Surface and Groundwater       5-0ct-15  Revision Samples for Analysis by ICP or ICP-MS Donald C. Cook NuClear Plant            Annual Radiological Environmental Operating Report 2015 Issue         DIRR Sop#          Rev                         Sop Title Date         Type Acid Digestion of Total Metals in Aqueous GL-MA-E-008         16      Samples and Extracts for Analysis by ICP and     10-Feb-15    Revision
* ICP-MS Acid Digestion of To_tal Metals in Aqueous GL-MA-E-008         17      Samples and Extracts for Analysis by ICP and      5-0ct-15    Revision ICP-MS Acid Digestion of Sediments, Sludges, and GL-MA-E-009         24                                                       25-Feb-15    Revision Soils Acid Digestion of Sediments, Sludges, and GL-MA-E-009         25                                                       28-0ct-15    Revision Soils Mercury Analysis Using the Perkin Elmer GL-MA-E-010         28                                                        ?~Apr-15    Revision Automated Mercury Analyzer Mercury Analysis Using the Perkin Elmer GL-MA-E-010         29                                                        28-Jul-15   Revision Automated Mercury Analyzer Mercury Analysis Using the Perkin Elmer GL-MA-E-010         30                                                        5-0ct-15    Revision Automated Mercury Analyzer GL-MA-E-013         23      Determination of Metals by ICP                  19-May-15     Revision GL-MA-E~014         25      Determination of Metals by ICP-MS                25-Feb-15 .. Revision Sample Preparation for Total Recoverable GL-MA-E-016         13                                                       10-Feb-15    Revision Elements by EPA Method 200.Z Sample Preparation for Total Recoverable GL-MA-E-016         14                                                       28-0ct-15    Revision Elements by EPA Method 200.2 GL-MA-.E-017         g,     Metals Data Validation                             2-Jul-15   Revision Mercury Analysis l.Jsing the PS Analytical GL-MA-E-018         16                                                      14-Aug-15     Revision Millennium Automated Mercury Analyzer Acid Digestion of Personal Cassette Filters For GL-MA-E~020          2                                                       28-0ct-15    Revision Analysis by ICP Non-Volatile Total Petroleum Hydrocarbons GL-dA-E-003         24                                                       27-Jan-15    Change by Flame Ionization Detector Volatile Total Petroleum Hydrocarbons by GL-OA-E-004         25                                                      20-Nov-15     Revision Flame Ionization Detector.
Analysis of Semivolatile Organic Compounds GL-OA-E-009         34                                                       20-Jan-15    Change by Gas Chromatography/Mass Spectrometry Extraction of Semivolatile and Nonvolatile GL-OA-E-010         i3      O~ganic Compounds from Soil, Sludge, and          5-Jan-15    Change.
Other Miscellaneous Solid Samples Extraction of SemivoJatile and Nonvolatile GL-OA-E-010         24      Organic Compounds from Soil, Sludge, and           7-Jul-15   Change Other Miscellaneous Solid Samples Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Issue        DIRR Sop#          Rev                        Sop Title Date        Type Analysis of Chlorophenoxy Acid Herbicides by GL-OA-E-011         21                                                    20-Nov-15    Change ECD Extraction of Semivolatile and Nonvolatile GL-OA-E-013         27     Organic Compounds from Groundwater,               5-Jan-15  Change Wastewater, and Other Aqueous Samples Extraction of Semivolatile and Nonvolatile GL-OA-E-013         28     Organic Compounds from Groundwater,                2-Jul-15 Change Wastewater, and Other Aqueous Samples Volatile Organic Compounds by Gas GL-OA-E-022         11     Chromatograph/Mass Spectrometer                26-Aug-15    Revision Applicable to EPA Method 524.2 Volatile Organic Compounds (VOC) by Gas GL-OA-E-026         20                                                    28-May-15    Revision Chromatograph/Mass Spectrometer Volatile Organic Compounds (VOC) by Gas GL-OA-E-026         21                                                    30-Nov-15    Revision Chromatograph/Mass Spectrometer Organochlorine Pesticides and Chlorinated GL-OA-E-041         13                                                    27-Nov-15    Change Hydrocarbons Common Industrial Solvents, Glycols, and GL-OA-E-046          8     Various Organic Compounds by Flame               9-Dec-15   Change Ionization Detector Definitive Low Level Analysis of Nitroaromatic Explosives Utilizing Liquid Chromatography/
GL-OA-E-056         17     Mass Spectrometry/ Mass Spectrometry            16-Jun-15   Revision (LC/MS/MS) by SW-846 Method 8321 Modified (8321M)
Analysis of 1,2-Dibromoethane (EDB) and 1,2-GL-OA-E-059         13     Dibromo-3-Chloropropane (DBCP) in Water by      21-Apr-15   Change GC/ECD Using Methods 504.1 or 8011 Analysis of 1,2-Dibromoethane (EDB), 1,2-Dibromo-3-Chloropropane (DBCP) and 1,2,3-GL-OA-E-059         14                                                    20-Nov-15    Change Trichloropropane in Water by GC/ECD Using Methods 504.1 or 8011 Massachusetts Method for the Determination GL-OA-E-063          4                                                    24-Dec-15    Change of Extractable Petroleum Hydrocarbons (EPH)
Reagent/Solventistandards Screening for GL-OA-E-065          2                                                       7-Jul-15  Change Organic Prep GL-OA-E-066          5     Automated Soxhlet Extraction                      2-Jul-15  Change Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Issue      DIRR Sop#          Rev                        Sop Title Date       Type Definitive Low Level Perchlorate Analysis Utilizing Liquid Chromatography/Mass GL-OA-E-067         11     Spectrometry/Mass Spectrometry                  16-Jun-15  Revision (LC/MS/MS) by EPA Method 6850 _Modified (6850M)
The Pre-Extraction Processing of Soil Samples GL-OA-E-071          2     Collected Using Multi-Incremental Sampling      26-Feb-15  Revision (MIS) Techniques Analysis of 1,4-Dioxane in Drinking Water by GL-OA-E-073          0     Solid Phase Extraction (SPE) and Gas            20-Jan-15  Change Chromatography/Mass Spectrometry GL-QS-B-001         27     Quality Assurance Plan                         20-Mar-15 . Revision GL-QS-B-001         28     Quality Assurance Plan                         25-Mar-15   Revision GL-QS-B-002          7     DoD ELAP Quality Assurance Plan                 26-Jun-15  Revision GL-QS-E-001         22     Conduct of Quality Audits                       21-Jan-15  Revision GL-QS-E-007         11     Thermometer Verification                        20-Jan-15  Revision GL-QS-E-008         12     Quality Records Management and Disposition     21-May-15   Change Method Validation and Initial and Continuing GL-QS~E-011          8                                                    10-Nov-15   Revision Demonstrations of Capability The Determination of Technetium-99 Using GL-RAD-A-005        23                                                     10-Apr-15  Revision TEVA Resin The Determination of Technetium-99 Using GL-RAD-A-005        24                                                    17-Dec-15   Change TEVA Resin The Isotopic Determination of Americium, GL-RAD-A-011        25                                                      1-0ct-15  Revision Curium, Plutonium, and Uranium GL-RAD-A-016        16     The Determination of Radiometric Polonium       16-Apr-15  Revision The Determination of Promethium-147 in Soil GL-RAD-A-020        14                                                     10-Apr-15  Revision and Water GL-RAD-A-022        16     The Determination of Ni-59 and Ni-63            10-Apr-15  Change The Preparation of Special Matrices for the GL-RAD-A-026        14                                                      1-0ct-15  Revision Determination of Radionuclides The Isotopic Determination of GL-RAD-A-032        19                                                     14-0ct-15  Revision Neptunium/Thorium The Determination of Fe-55 in Liquid and Solid GL-RAD-A-040        11                                                     10-Apr-15  Revision Matrices by Liquid Scintillation Counter The Determination of Radium-224 and GL-RAD-A-046         7                                                      16-Jul-15 Revision Radium-226 by Alpha Spectroscopy The Determination of Calcium-45 in Soils and GL-RAD-A-048         8                                                    17-Dec-15   Change Waters Isotopic Determination of Plutonium in Large GL-RAD-A-053         4                                                    15-Dec-15   Revision Water Resin Samples Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Issue        DIRR Sop#           Rev                       Sop Title Date       "Type The Determination of Technetium-99 Using GL-RAD-A-059         3                                                   17-Dec-15   Change Analytical Grade 1X8 Resin The Determination of Carbon-14 in GL-RAD-A-065         0                                                   11-Aug-15   Change Atmospheric Screening Cartridges The Sequential Determination of Isotopic GL-RAD-B-001        41     Americiu~, Curium, Californium, Plutonium,     20-Jan-15  Change Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        42     Americium, Curium, Californium, Plutonium,     28-Apr-15  Change Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        42     Americium, Curium, Californium, Plutonium,     28-Apr-15  Change Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        43     Americium, Curium, Californium, Plutonium,      10-Jul-15 Revision Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        44     Americium, Curium, Californium, Plutonium,    11-Aug-15   Revision Strontium, and Uranium in Urine The Sequential Determination of Isotopic GL-RAD-B-001        45     Americium, Curium, Californium, Plutonium,    20-Nov-15   Revision Strontium, and Uranium in Urine The Determir:iation of Polonium-210 or GL-RAD-B-002        13                                                   20-Nov-15   Change Radium-226 in Bioassay Samples The Determination of Isotopic Thorium and GL-RAD-B-003        18                                                   31-Mar-15   Change Uranium in Urine Samples The Determination of Gross Alpha Activity in GL-RAD-B-008        11                                                    29-Apr-15  Revision Nasal Swipes Sequential Determination of Americium, GL-RAD-B-013        22     Plutonium, Strontium, Plutonium-241, and       24-Sep-15  Revision Uranium in Fecal, Bone, and Tissue Samples The Preparation of Synthetic Urine and Fecal GL-RAD-B-014        10                                                   26-Mar-15   Change Material GL-RAD-B-017        13     The Determination of Neptunium in Urine       31-Mar-15   Change Total Uranium in Bioassay Samples by Kinetic GL-RAD-B-019        11                                                    28-Apr-15 *Change Phosphorescence The Determination of Gross Alpha and Gross GL-RAD-B-022         7                                                   26-Mar-15   Change Non-Volatile Beta in Urine The Determination of Gross Alpha and Gross GL-RAD-B-022         8                                                   24-Sep-15   Revision Non-Volatile Beta in Urine Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 Issue        DIRR Sop#          Rev                       Sop Titl~
Date        Type GL-RAD-B-023         8     The Determination of Carbon-14 in Urine         7-0ct-15   Change GL-RAD-B-039         2     The Determination of lron-55 in Urine         26-Mar-15    Change The Determination of Radium-224 and GL-RAD-B-040         1     Radium-226 by Alpha Spectroscopy in           26~Mar-15    Change Bioassay Samples Data Review, Validation and Data Package GL-RAD-D-003        39                                                   19-Mar-15    Revision Assembly Equations Used in Data Reduction for GL-RAD-D-006         6                                                   12-Mar-15    Revision Environmental Radiochemistry GL-RAD-1-001        19     Gamma Spectroscopy System Operation           24-Mar-15    Revision GL-RAD-1-004        18     Beckman LS-6000/6500                          30-Mar-15    Revision LB4100 Gross Alpha/Beta Counter Operating GL-RAD-1-006        16                                                     8-Apr-15   Revision Instructions GL-RAD-1-009        14     Alpha Spectroscopy System                     12-May-15    Revision GL-RAD-1-014        15     WALLAC Guardian Model 1414                    30-Mar-15    Revision Multi-Detector Counter: Operating GL-RAD-1-016         9                                                     8-Apr-15   Revision Instructions Wallac 1220 Quantalus Liquid Scintillation GL-RAD-1-017        12                                                   3'1-Mar-15 . Revision Counter GL-RAD-1-020         1     nperation of the Gamma Analyst                 28-0ct-15   Delet'ion Preparation and Verification of Radioactive GL-RAD-M-001        31                                                   26-Mar.-15   Revision  I Standards Preparation and Verification of Radioactive GL-RAD-M-001        32                                                     3-Jun-15   Revi.sion Standards GL-SR~E-001         43     Sample Receipt, Login, and Storage             27-Jan-15   Revision Design Specifications for the Network GL-SVR-D-001         6                                                   10-Dec-15    Revision Infrastructure GL-SVR-E-005         2     Backupsvr01                                     4-Feb-15   Revision Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015

==7.0      REFERENCES==
: 1. US NRG Radiological Assessment Branch Technical Position, "An Acceptable Radiological Environmental Monitoring Program," Revision 1, November 1979.
: 2. NCRP Report No. 94, Exposure of the Population in the United States and Canada from Natural Background Radiation, National Council on Radiation Protection and Measurements, 1987.
8.0      ERRATA It was identified that the mean concentration and range for tritium (H-3) in drinking water reported in Table 3.1 of the 2014 CNP AREOR was incorrect and did not match up with the data listing provided in Appendix D of the same document. Specifically, the mean and range for the indicator station (LTW) and the station with the highest mean (same location) were reported in Table 3.1 of the AREOR as 6.6E4 pCi/L and 264,000 pCi/L respectively, whereas the individual H-3 quarterly concentration values reported in Appendix D for the indicator station (LTW) were -2.35E+01, -4.55E+01, 3.03E+01 and 2.64E+02 pCi/L, which would result in a correct mean of 56.3 pCi/L and a range of 264 pCi/L AREVA initiated CR 2016-266 and a corrected drinking water table is provided on the following pages.
Donald C. Cook Nuclear Plant                      Annual .Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2014)
MEDIUM: Drinking Water !WDl                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides            Mean***                        Station            Mean***                       Mean***
(No. Analyses)  Required Range                                             Range                         Range Non-Routine*      LLD    No. Detected**                                    No. Detected**                No. Detected**
BETA       (52)    4           1.0E 0                   STJ                     l.4E 0                         1.4E 0 (0)               -2.4 - 2.7)E 0                                   -4.2 - 31.4)E -1               -4.2 - 31.4)E -1 (0/ 26)                                          (0/ 26)                        (0/ 26)
H-3        (8)   2000          5.6E 1                   LTW                     5.6E 1                       -l.2E 2 (0)               -4.6 - 26.4)E 1                                  -4.6 - 26.4)E 1                -7.5 - 2.l)E 2 (0/ 4)                                           (0/ 4)                         (0/ 4)
Be-7       (52)                3.4E -1                  LTW                     3.4E -1                      -3.6E -2 (0)               -1.4 - 2.4)E 1                                   -1.4 - 2.4)E 1                 -1.9 - l.5)E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
K-40       (52)                4.2E 0                   STJ                     6.SE 0                         6.5E 0 (0)               -3.3 - 4.8)E 1                                   -4.4 - 4.2)E 1                 -4.4 - 4.2)E 1 (1/ 26)                                          (1/ 26)                        (1/ 26)
Cr-51      (52)               2.5E 0                    LTW                     2.SE 0                       -1.2E 0 (0)               -2.2 - 2.5)E 1                                   -2.2 - 2.5)E 1                 -2.1 - 2.7)E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
Mn-54      (52)   15          1.5E -1                   LTW                     1.SE -1                      -1. 2E -1 (0)               -1.9 - 3.0)E 0                                   -1.9 - 3.0)E 0                 -2.1 - 4.7)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Co-57      (52)                3.9E -1                  LTW                     3.9E -1                      -1.3E -1 (0)               -2.1 - 2.7)E 0                                   -2.1 - 2.7)E 0                 -1.4 - 1.0)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Co-58      (52)   15         -2.9E -1                   STJ                   -2.4E -1                       -2.4E -1 (0)               -3.3 - 1.5)E 0                                   -3.5 - 2.l)E 0                 -3.5 - 2.l)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Fe-59      (52)   30          5.8E -1                   STJ                     5.9E -1                        5.9E -1 (0)               -5.1 - 7.3)E 0                                   -3.2 - 4.l)E 0                 -3.2 - 4.l)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Co-60      (52)   15         -5.lE -2                   STJ                     3.lE -1                        3.lE -1 (0)               -2.7 - 2.8)E 0                                   -3.1 - 3.3)E 0                 -3.1 - 3.3)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Zn-65      (52)   30         -1.3E 0                    STJ                   -1.5E -1                       -1.5E -1 (0)               -8.0 - 6.5)E 0                                   -4.8 - 10.5)E 0                -4.8 '- 10.5)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Se-75      (52)               1. 9E -1                  LTW                     1. 9E -1                       2.lE -3 (0)               -4.5 - 3.0)E 0                                   -4.5 - 3.0)E 0                 -3.8 - 3.l)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Donald C. Cook Nuclear Plant                        Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2014)
MEDIUM: Drinking Water (WO)                 UNITS: pCi/liter Indicator Stations                        Station With Highest Mean             Control Stations Radionuclides              Mean***                        Station            Mean***                       Mean***
(No. Analyses)    Required Range                                             Range                         Range Non-Routine*        LLD    No. Detected**                                    No. Detected**                No. Detected**
Nb-95        (52)   15           6.6E -1                  LTW                     6.6E -1                      -8.9E -2 (0)               -1.6 - 3.4)E 0                                   -1.6 - 3.4)E 0                 -2.3 - 2.7)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Zr-95      . (52)   30           3.7E -1                  LTW                     3.7E -1                        1.lE -1 (0)               -3.8 - 14.8)E 0                                  -3.8 - 14.8)E 0                -3,4 - 3.7)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ru-103       (52)              -2.5E -1                   LTW                   -2.5E -1                       -5.9E -1 (0)               -3.5 - 5.5)E 0                                   -3.5 - 5.5)E 0                 -2.9 - 1.2)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ru-106       (52)              -2.lE 0                    LTW                   -2.lE 0                        -3.lE 0 (0)               -2.3 - 2.8)E 1                                   -2.3 - 2.8)E 1                 -1. 9 - 0. 9) E 1 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ag-108m      (52)               4.0E -3                   LTW                     4.0E -3                      -6.0E -2 (0)               -3.0 - 1.6)E 0                                   -3.0 - 1.6)E 0                 -2.6 - 1.5)E 0 (0/ 26)                                          (0/ 26)                        (0/ 26)
Ag-110m     (52)               -9.4E -1                   STJ                     6.lE -2                        6.lE -2 (0)                -3.6 - 1.6)E 0                                   -2.5 - 3.3)E 0                 -2.5 - 3.3)E 0 (0/ 26)                                           (0/ 26)                        (0/ 26)
Sb-124       (52)               8.9E -3                   LTW                     8.9E -3                      -4.4E -1 (0)                -4.1 - 5.0)E 0                                   -4.1 - 5.0)E 0                 -4.7 - 3.4)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Sb-125       (52)               2.3E -3                   STJ                     l.4E 0                         l.4E 0 (0)               -9.8 - 11.5)E 0                                  -2.2 - 8.l)E 0                 -2.2 - 8.l)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26) 1-131       (52)     1          9.0E -2                   LTW                     9.0E -2                      -1.0E -2 (0)                -5.5 - 51.0)E -1                                 -5.5 - 51.0)E -1               -5.6 - 7.6)E -1 (0/ 26)                                           (0/ 26)                       (0/ 26)
Cs-134      (52)    15          8.lE -2                   STJ                     6.2E -1                        6.2E -1 (0)                -3.0 - 4.0)E 0                                   -2.2 - 3.2)E 0                 -2.2 - 3.2)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Cs-137      (52)    18          6. 7E -1                  LTW                     6.7E -1                        6.5E -1 (0)                -2.4 - 3.9)E 0                                   -2.4 - 3.9)E 0                 -2.9 - 4.6)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Ba-140      (52)    60          3.5E -1                   LTW                     3.5E -1                      -9.3E -1 (0)                -3.1 - 5.7)E 0                                   -3.l - 5.7)E 0                 -6.6 - 3.5)E 0 (0/ 26)                                           (0/ 26)                       (0/ 26)
Donald C. Cook Nuclear Plant                             Annual Radiological Environmental Operating Report 2015 Table 3.1 Radiological Environmer;ital Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January - December 2014)
MEDIUM: Drinking Water (WO)               UNITS: .pCi/liter Indicator Stations                     Station With Highest Mean          Control Stations Radionuclides                     Mean***                      Station           Mean***                     Mean***
(No. Analyses)       Required     Range                                          Range                       Range Non-Routine*            LLD       No. Detected**                                 No. Detected**              No. Detected**
La-140      (52)         15           3.5E -1                  LTW                   3.5E -1                   -9.3E -1 (0.)                     -3.1 -5.7)E 0                                  -3.1 - 5.7)E 0             -6.6 - 3.5)E 0 (0/ 26)                                       (0/ 26)                   (0/ 26)
Ce-141      (52)                      2.7E -1                  LTW                   2.7E -1                     3.3E -2 (0)                      -5.2 - 5.S)E 0                                 -5.2 - 5.S)E 0             -5.9 - 7.6)E 0 (0/ 26)                                       (0/ 26)                   (0/ 26)
Ce-144      (52)                     -1. lE 0                  STJ                   3.3E -1                     3.3E -1 (0)                      -1.8 - 2.8)E 1                                 -1.5 - 1.2)E 1             -1.5 - 1.2)E 1 (0/ 26)                                       (0/ 26)                   (0/ 26)
Ac-228      (52)                      2.0E 0                   LTW                   2.0E 0                      3.6E -1 (0)                      -9.1 - 21.5)E 0                                -9.1 - 21.5)E 0            -1.4 - 1. 7)E 1 (0/ 26)                                       (0/ 26)                   (0/ 26)
Th-228      (52)                      3.3E 0                   LTW                   3.3E 0                      2.0E 0 (0)                      -4.4 - 14.0)E 0                               -4.4 - 14.0)E 0             -7.1 - 7.7)E 0 (0/ 26)                                       (0/ 26)                   (0/ 26)
* Non-Routine refers to radionuclides exceeding the Reporting Levels in ODCM Attachment 3.21 of the ODCM.
**The fraction of sample analysis yielding detectable measurements (i.e., > MOC) is shown in parentheses.   *
***Mean value set to O.OE 0 for calculated mean values with exponent less than E-06.
* Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2015 APPENDIX A SYNOPSIS OF ANALYSIS TECHNIQUES A-1

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 GEL Labs GROSS ALPHA/BETA ANALYSIS Air particulate samples, collected on a weekly basis aid in verifying the in-plant controls used for monitoring the release of radioactive materials. The samples are transmitted to the laboratory for gross beta radioactivity analysis. Air particulate samples are analyzed on a low background alpha/beta .gas proportional counting unit, for a predetermined amount of time; following a delay to allow for the decay of radon products. Blank filters, either provided by the client, or of the same size and type as the client filters are used for background subtraction. If the beta activity concentration is greater than 0.2 pCi/m 3 , the sample may need to be analyzed for individual gamma emitters. Each sample is composited by sampling location and held-until the end of the quarter for a gamma isotopic analysis.
Environmental water samples are also analyzed for gross alpha and/or gross beta radioactivity.
Measurable amounts of alpha and beta emitting radionuclides, either naturally-occurring or artificially produced, are found in most environmental water samples. Gross alpha and gross beta measurements are rapid screening methods that may indicate the need for a more detailed isotopic analysis. Samples are evaporated to near dryness and quantitatively transferred to concentric ring, stainless steel planchets, where the evaporation is completed as described in EPA Method 900.0. A gas proportional counter is used for the measurement of gross alpha/gross beta radioactivity. Solid deposition is an interference in this method and must be accounted for during instrument calibration.
No decay is accounted for in the gross alpha/beta activity concentration calculations since the radionuclides of origin are not known. The MDC depends on sample size, counting system char~cteristics, background, and counting time. Typical counting times for gross alpha/beta analyses are seventy-five minutes for waters and sixty minutes for air particulate filters.
GAMMA SPECTROMETRY The following media are typically analyzed for gamma-emitting radionuclide activity: milk, water, ,
charcoal cartridges, airborne particulate filters, biological material (which includes aquatic animals, plants, and terrestrial vegetation), and. sediment or soil samples. Samples are prepared by various controlled methods (blending, drying, milling) in order to maximize the volume that can be analyzed, and to achieve sample homogeneity. In order to ensure the precision and* accuracy of the gamma measurements, specific counting containers are used to load sample media in a reproducible manner. Sample spectra are collected via high purity germanium based gamma ray spectrometry detection systems. The gamma spectrometry software can account for baseline corrections, background peak interferences, and photopeak multiplet resolution. Detected photopeaks are identified using a comprehensive library, specifically tailored for environmental monitoring around nuclear power facilities. Typical counting times for gamma spectrometry analyses vary from 7,200 to 30,000 seconds.
LOW LEVEL IODINE. ANALYSIS The low detection limit required for 1-131 in milk and water samples can only be achieved by radiochemical separation and concentration of the iodine.
A-2

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Iodate carrier is added to an acidified sample and, after reduction with Na2 S04 to iodide, the 1-131 is precipitated with AgN0 3 . The precipitate is dissolved and purified with Zinc powder and H2S04 and the solution is re-precipitated as Pdl 2 , which is then filtered on to a polypropylene filter and counted on a low background gas flow proportional counter.
H-3 ANALYSIS The determination of tritium in environmental matrices basically involves a sample preparation step followed by distillation and analysis of the pure distillate by liquid scintillation spectrometry.
The tritium counting efficiency is determined using an efficiency curve generated as a function of sample quench. A set of NIST (National Institute of Standards and Technology) traceable standards is used for calibration.
* The sample preparation step involves extracting H-3 from the matrix in the presence of NaOH and KMn0 4 allowing for sufficient equilibration time so that a complete transposition of tritium with stable hydrogen has occurred.
A-3

Donald C. Cook Nuclear Plant     Annual Radiological Environmental Operating Report 2015 APPENDIX B 2015 LAND USE CENSUS B-1

Donald  t. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 2015 Radiological Environmental Monitoring Program Land Use Census Summary Date: September 29, 2015 Purpose A Land Use Census (LUC) is performed annually to identify relevant changes in land usage in the area surrounding Donald C. Cook Nuclear Plant (CNP) which have the potential to affect radiation exposure pathways. Identified changes are evaluated to determine if modifications should be made to the Radiological Environmental Monitoring Program (REMP) or other related programs.
A summary of the 2015 LUC is detailed below.
Dairy Farm Survey
.A dairy farm survey was conducted from August 14 through September 30, 2015, to update the following information:
* Dairy farms located in the area around the CNP (within Berrien County, Ml)
* Location nearest to CNP where animal milk is produced for human consumption.
                                                                                                    ~
As a result of information obtained prior to and during the census period, one identified dairy farm in Sector H has ceased milking operations. That farm is listed here:
Dean Lozmack, 14843 Cleveland Road, Galien, Ml, 49113, Sector H, discontinued milking operations in July, 2015.
Additionally, 'during the 2014 Land Use Census reporting period, Livinghouse Farm (REMP Designation: LF) notified CNP personnel that they would cease milking operations as soor:i as their milk cows are sold. This anticipated change was administered during October-November, 2014.
I Currently, there are zero (0) indicator (within eight miles of the CNP) farms/residences which have dairy_ animals providing milk for human consumption which participate in the CNP REMP Dairy Farm Milk sampling program.
CNP REMP requirements specify a minimum of three indicators (within 8 miles of CNP) milk farms/residences are needed to support the milk sampling program. Due to the lack of any dairy farms/residences participating at this time, the milk sampling program continues to be considered suspended.
In accordance with REMP guidance, Broadleaf sampling "in-lieu of milk" continues to be conducted as a compensatory action for this condition.
Finally, the census identified the closest animals (cows) providing milk for human consumption as follows:
Shuler Farm (REMP Designation: SF) 8-2

Donald C. Cook Nuclear Plant              Annual.Radiological Environmental Operating Report 2015 Sector/Distance from CNP: G and H / 4.12 miles (21,648 feet) 2791 Snow Rd.
Baroda, 49101 Livestock for Consumption Survey During the time period August 14 through September 30, 2015, the Livestock Survey examined farms near CNP that produce livestock for consumption to determine the location closest to CNP in each land sector within 5 miles.
As a result of information obtained prior to and during the census period, two new farms which support livestock (beef and/or goats) operations were identified in Sectors G and E. Those farms are listed here:
Jeff Monroe Farm (Be~f & Goats), 10627 Miller Rd., Baroda, Ml 49101, Sector G; Distance from CNP: 4.83 mi.
Gary Klutts Farm (Beef), 770 Hinchman Rd., Baroda, Ml 49101 Sector E; Distance from CNP: 4.813 mi.
The location which was determined to be the "Closest Livestock for Consumption (meat)" did not change from. the 2014 report.
* Robert Mast Farm, Livingston Road, Bridgman, Ml, 49106 (Distance From CNP: 1.41 miles (7,445 feet) and recorded as part of this census on the
       . associated Data Sheet 1, Land Use Census, Section IV. "Closest Livestock for Consumption (meat)" to .12-THP-6010-RPP-640 "Land Use Census".
Residential Land Use Survey From June 1, 2014 to June 1, 2015, per Lake Township Building Inspector, Jim Gast, 0 (zero) new residential building permits were issued for residential construction in the Lake Township sections that border the CNP property (Sections 5, 6, 7, and 8). Additionally, there were 0 (zero) Demolition Permits issued during that time. As a consequence, there was no impact on the "closest residences" already listed on 12-THP-6010-RPP-640 Data Sheet 1 - "Residential Land Use Data" section.
Per email correspondence with the Berrien County Health Department, there were no groundwater well permits issued in Lake Township Sections 5, 6, 7, or 8 during this time period.
Per email correspondence with the Michigan Department of Agriculture, there was no usage of Lake Michigan water for agricultural irrigation purposes in Berrien County.
B-3

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Garden Census. Grape and Broadleaf Sampling During the time period August 20 through September 30, 2015, a survey of nearby properties verified that the gar.den located at 7379 Rosemary Rd. (0.91 miles [4,805 feet] from CNP), in Sector C, is still the "Closest Garden Producing Fresh Leafy Vegetables."
In lieu of conducting the Garden Census as part of this LUC, 2015 Broadleaf Sampling was performed per the requirements of the ODCM and in accordance with 12-THP-601 O-RPP-638, Collection of Grape and Broadleaf Samples.
Notifications and Updates The 2015 Land Use Census identified no relevant changes in usage to areas surrounding CNP.
The identified changes in this report have been evaluated per PMP-6010-0SD-001 Off-Site Dose Calculation Manual, and repres*ent no changes in dose commitment.
B-4

Donald C. Cook Nuclear Plant    An'nual Radiological Environmental Operating Report 2015 APPENDIX C QUALITY ASSURANCE PROGRAM C-1

Donald C. Cook Nuclear Plant               Annual Radiological Environmental Operating Report 2015 Appendix C: Quality Assurance (QA) Programs GEL Laboratories QA GEL's primary goals are to ensure that all measurement data generated are scientifically and legally defensible, of known and acceptable quality per the data quality objectives (DQOs), and thoroughly documented to provide sound support for environmental decisions. In addition, GEL continues to ensure compliance with all contractual requirements, environmental standards, and regulations established by local, state and federal authorities.
GEL administers the QA program in accordance with their Quality Assurance Plan, GL-QS   001. The Quality Systems include all QA policies and quality control (QC) procedures necessary to plan, implement, and assess the work that GEL performs. GEL's QA Program establishes a quality management system (QMS) that governs all of the activities of the organization.
The results of GEL's assessment of their laboratory activities listed in this section entails their QA program for the proficiency testing (PT) and environmental monitoring aspects of GEL for 2015. GEL's QA Program is designed to monitor the quality of analytical processing associated with environmental, radiobioassay, effluent (10 CFR Part 50), and waste (10 CFR Part 61) sample analysis.
This summary was extraGted from GEL Laboratories report entitled "2015 Annual Quality Assurance Report for the Radiological Environmental Monitoring Program (REMP)", dated April 4, 2016, and includes:
* Intra-laboratory QC results analyzed during 2015.
* Inter-laboratory QC results analyzed during 2015 where known values were available.
QA Programs for Inter-laboratory, Intra-laboratory and Third Party Cross Check In addition to internal and client audits, GEL's laboratory participates in annual performance evaluation studies conducted by independent providers. GEL routinely participates in the
* following types of performance audits:
* PT and other inter-laboratory comparisons.
* Performance requirements necessary to retain Certifications.
* Evaluation of recoveries of certified reference and in-house secondary reference materials using statistical process control (SPC) data.
* Evaluation of relative percent difference between measurements through SPC data.
GEL also participates in a number of PT programs for federal and state agencies, and as required by contracts. It is GEL's policy that no proficiency evaluation samples be analyzed in any special manner. GEL's annual performance evaluation participation generally includes a combination of studie& that support the following:
      .*  US Environmental Protection Agency Discharge Monitoring Report, Quality Assurance Program (DMR-QA). An annual national program sponsored by the US Environmental Protection Agency (EPA) for laboratories engaged in the analysis of samples associated C-2

Donald C. Cook Nuclear Plant               Annual Radiological Environmental Operating Report 2015 with the National Pollutant Discharge Ellimination System (NPDES) monitoring program.
Participation is mandatory for all holders of NPDES permits. The permit holder must analyze for all of the parameters listed on the discharge permit. Parameters include general chemistry, metals, biochemical oxygen demand, chemical oxygen demand, oil and grease, ammonia, nitrates, etc.
* Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP).
A semiannual program developed by the DOE in support of DOE contractors performing waste analyses. Participation is required for all laboratories that perform environmental analytical measurements in support of environmental management activities. This program includes radioactive isotopes in water, soil, vegetation and air filters. *
* ERA's Multimedia Radiochemistry PT program (MRaD'). This program is for labs seeking certification for radionuclides in wastewater and solid waste. The program is conducted in strict compliance with EPA National Standards for Water PT study.
* ERA's lnterLab RadChem PT Program for radiological analyses. This program completes the process of replacing the EPA Environmental Monitoring Systems Laboratory, Las Vegas (EMSL-LV) Nuclear Radiation Assessment Division program which was discontinued in 1998. Laboratories seeking certification for radionuclide
        . analysis in drinking water also use the study. This program is conducted in strict compliance with the EPA National Standards for Water PT Studies. This program encompasses Uranium by EPA method 200.8 (for drinking water certification in Utah/Primary NELAP), gamma emitters, Gross Alpha/Beta, lodine-131, naturally occurring radioactive isotopes, Strontium-89/90, and Tritium.
* ERA's Water Pollution (WP) biannual program for waste methodologies, which includes parameters for both organic and inorganic analytes.
* ERA's Water Supply (WS) biannual program for drinking water methodologies, which includes parameters for organic and inorganic analytes.
* Environmental Cross-Check Program administered by Eckert & Ziegler Analytics, Inc.
This progr:am encompasses radionuclides in water, soil, milk, naturally occurring radioactive isotopes in soil and air filters:
GEL procures single-blind performance evaluation samples from Eckert & Ziegler Analytics to verify the analysis of sample matrices processed at GEL. Samples are received on a quarterly basis. GEL's Third-Party Cross-Check Program provides environmental matrices encountered in a typical nuclear utility REMP. The Third-Party Cross-Check Program is intended'to meet or exceed the inter-laboratory comparison program requirements discussed in NRG Regulatory Guide 4.15. Once performance evaluation samples have been prepared in accordance with the instructions provided by the PT program provider, samples are managed and analyzed in the same manner as environmental samples from GEL's clients.
C-3

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 QA Program for Internal and External Audits During each annual reporting period, at least one internal assessment of each area of the laboratory is conducted in accordance with the pre-established schedule from Standard Operating Procedure (SOP) for the Conduct of Quality Audits, GL-QS-E-001. The annual internal audit plan is reviewed for adequacy and includes the scheduled frequency and scope of quality control actions necessary to GEL's QA program. Internal audits are conducted at least annually in accordance with a schedule approved by the Quality Systems Director. Supplier audits are contingent upon the categorization of the supplier, and may or may not be conducted prior to the use of a supplier or subcontractor. 1ype I suppliers and subcontractors, regardless of how they were initially qualified, are re-evaluated at least once every three years.
In addition, prospective customers audit GEL during pre-contract audits. GEL hosts several external audits each year for both our clients and other programs. These programs include environmental monitoring, waste characterization, and radiobioassay. The following list of programs may audit GEL at least annually or up to every three years depending on the program:
* NELAC, National Environmental Laboratory Accreditation Program (NELAP)
* DOECAP, U.S. Department of Energy Consolidated Audit Program
* DOELAP, U.S. Department of Energy Laboratory Accreditation Program
* DOE QSAS, U.S. Department of Energy, Quality Systems for Analytical Services
* ISO/IEC 17025:2005
* A2LA, American Association for Laboratory Accreditation
* DOD ELAP, US Department of Defense Environmental Laboratory Accreditation Program
* NUPIC, Nuclear Procurement Issues Committee
* SC DHEC, South Carolina Department of Health and Environmental Control The annual radiochemistry laboratory internal audit (15-RAD-001) was conducted in May, 2015.
One (1) finding, three (3) observations, and one (1) recommendation resulted from this assessment. By July, 2015, the finding was closed and appropriate laboratory staff addressed each observation and recommendation.
Performance Evaluation Acceptance Criteria for Environmental Sample Analysis GEL utilized an acceptance protocol based upon two performance models. For those inter-laboratory, programs that already have .established performance criteria for bias (e.g. MAPEP, and ERA/ELAP), GEL will utilize the criteria for the specific program. For intra-laboratory or third party quality control programs that do not have a specific acceptance* criteria (e.g. the Eckert-Ziegler Analytics Environmental Cross-check Program), results, will be evaluated in accordance with GEL's internal acceptance criteria.
Performance Evaluation Samples Performance Evaluation (PE) results and internal quality control sample results are evaluated in accordance with GEL acceptance criteria. The first criterion concerns bias, which is defined as the deviation of any one result from the known value. The second criterion concerns precision, C-4

Donald C. Cook Nuclear Plant               Annual Radiological Environmental Operating Report 2015 which deals with the ability of the measurement to be replicated by comparison of an individual result with the mean of all results for a given sample set.
GEL also evaluates its analytical performance on a regular basis through SPC acceptance criteria. Where feasible, this criterion is applied to both measures of precision and accuracy and is specific to sample matrix. GEL establishes environmental process control limits at least annually.
* For Radiochemistry analysis, QC evaluation is based on static limits rather than those that are statistically derived. Current process control limits are maintained in GEL's Alpha Laboratory Information Management System (LIMS). GEL also measures precision with matrix duplicates and/or matrix spike duplicates. The upper and lower control limits (UCL and LCL respectively) for precision are plus or minus three times the standard deviation from the mean of a series of relative percent differences. The static precision criteria for radiochemical analyses are O -
20%, for activity levels exceeding the contract required detection limit (CRDL).
QC Program for Environmental Sample Analysis GEL's internal QA Program is designed to include QC functions such as instrumentation calibration checks (to ensure proper instrument response), blank samples, instrumentation backgrounds, duplicates, as well as overall staff qualification analyses and statistical process controls. Both QC and qualification analyses samples are used to be as similar as the matrix type of those samples submitted for analysis by the various laboratory clients. These performance test (PT} samples (or performance evaluation samples) are either actual samples submitted in duplicate in order to evaluate the precision of laboratory measurements, or fortified blank samples, which have been given a known quantity of a radioisotope that is of interest to GEL's clients.
Accuracy (or Bias) is-measured through laboratory control samples and/or matrix spikes, as well as surrogates and internal standards. The UCLs and LCLs for accuracy are plus or minus three times the standard deviation from the mean of a series of recoveries. The static limit for radiochemical analyses is 75 - 125.%. Specific instructions for out-of-control situations are provided in the applicable analytical SOP.
GEL's Laboratory Control Standard (LCS) is an aliquot of reagent water or other blank matrix to which known quantities of the method analytes are added in the laboratory. The LCS is analyzed exactly like a sample, and its purpose is to determine whether the methodology is in control, and whether the laboratory is capable of making accurate and precise measurements.
Some methods may refer to these samples as Laboratory Fortified Blanks (LFB). The
* requirement for recovery is between 75 and 125% for radiological analyses excluding drinking water matrix.
Bias(%)= (observed concentration)
* 100 %
(known concentration)
* Precision is a data quality indicator of the agreement between measurements of the same property, obtained under similar conditions, and how well they conform to themselves.
Precision is usually expressed as standard deviation, variance or range in either absolute or relative (percentage) terms.
C-5

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 GEL's laboratory sample duplicate (DUP or LCSD) is an aliquot of a sample taken from the same container and processed in the same manner under identical laboratory conditions. The aliquot is analyzed independently from the parent sample and the results are compared to measure precision and accuracy.
If a DUP is analyzed, it will be reported as Relative Percent Difference (RPO). The RPO must be 20 percent or less, if both samples are greater than five times the MDC. If both results are less than five times MDC, then the RPO must be equal to, or less than 100 percent. If one result is above the MDC and the other is below the MDC, then the RPO can be calculated using the MDC for the result of the one below the MDC. The RPO must be 100 percent or less. In the situation where both results are above the MDC but one result is greater than five times the MDC and the other is less than five times the MDC, the RPO must be less than or equal to 20 percent. If both results are below MDC, then the limits on percent RPO are not applicable.
Difference (%) =(high DUP result -   low DUP result)
* 100 %
(average of results)
Summary of Data Results During 2015, forty-four (44) radioisotopes associated with seven (7) matrix types were analyzed under GEL's Performance Evaluation program in participation with ERA, MAPEP, and Eckert &
Ziegler Analytics. Matrix types were representative of client analyses performed during 2015.
Of the four hundred eighty-four (484) total results reported, 98.8% (478 of 484) were found to be acceptable. Results marked with "warning" are considered acceptable for this program because they are still within the 3-sigma acceptance criteria.The list below contains the type of matrix evaluated by GEL:
* Air Filter
* Cartridge
* Water
* Milk
* Soil
* Liquid
* Vegetation A summary list of all inter-laboratory radiological PT results and their evaluation against their acceptance criteria is provided in Table C-1. This list reflects GEL's participation in the MAPEP Monitoring Program, the ERA MRaD PT Program, the ERA PT Program, and the Eckert &
Ziegler Analytics Environmental Cross-Check Program.
* Summaries of GEL's intra-laboratory test results. for bias and precision by sample matrix are provided in Table C-3 (REMP Related) and Table C-4 (All Samples).
Summary of Participation in the Eckert & Ziegler Analytics Environmental Cross-Check Program Eckert & Ziegler Analytics provided samples for one hundred fifteen (115) individual environmental analyses. The accuracy of each result reported to Eckert & Ziegler Analytics, Inc. is measured by the ratio of GEL's result to the known value. All results fell within GEL's C-6

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 acceptance criteria (100%). Table C-2 lists the results specific to the Eckert & Ziegler Analytics sample provided in 2015. No corrective action reports were noted for these results.
Summary of Participation in the MAPEP Monitoring Program MAPEP Series 32 and 33 were analyzed by the laboratory. Of the one hundred thirty-five (135) analyses, 100% (135 out of 135) of all results fell within the PT provider's acceptance criteria.
Summary of Participation in the ERA MRaD PT Program The ERA MRad program provided samples (MRAD-22 and MRAD-23) for one hundred eighty-six (186) individual environmental analyses. Of the one hundred eighty-six (186) analyses, 99.5% (185 out of 186) fell within the PT provider's acceptance criteria. One analytical failure occurred: Total Uranium in vegetation.
For the corrective actions associated with MRAD-22, refer to CARR 150519-954 which is detailed in Table C-5.
Summary of Participation in the ERA PT Program The ERA program provided samples (RAD-100, RAD-101, RAD-102 and RAD-103) forforty-eight (48) individual environmental analyses. Of the 48 analyses, 89.6% (43 out of 48) of all results fell within the PT provider's acceptance criteria. Isotope failures included: Cesium-137, Radium-228, lodine-131, Strontium-89 and Strontium-90.
For the corrective actions associated with isotope failures refer to corrective actions CARR150223-929, CARR150610-962, CARR150825-971, and CARR151130-993 (Table C-5).
Corrective Action Request and Report (CARR)
There are two categories of corrective action at GEL. One is corrective action implemented at the analytical and data review level in accordance with the analytical SOP. The other is formal corrective action documented by the Quality Systems (QS) Team in accordance with SOP GL-QS-E-002. A formal corrective action is initiated when a nonconformance reoccurs or is so significant that permanent elimination or prevention of the problem is required. Formal corrective action investigations include root cause analysis.
GEL includes quality requirements in most analytical SOPs to ensure that data are reported only if the QC criteria are met or the QC measures that did not meet the acceptance criteria are documented. A formal corrective action is implemented according to GEL's standard operating procedure GL-QS-E-002 for Conducting Corrective/Preventive Action and Identifying Opportunities for Improvement. Recording and documentation is performed following guidelines stated in GEL's SOP GL-QS-E-012 for Client NCR Database Operation.
Any employee at GEL can identify and report a nonconformance and request that corrective action be taken. Any GEL employee can participate on a corrective action team as requested by the QS team or Group Leaders. The steps for conducting corrective action are detailed in GEL's SOP GL-QS-E-002. In the event that correctness or validity of the laboratory's test results in doubt, the laboratory will take corrective action. If investigations ~how that the results C-7   .

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 have been impacted, affected clients will be informed of the issue in writing within five (5) calendar days of the discovery.
Table C-5 provides the status of CARRs for radiological performance testing during 2015. GEL has determined that causes of the failures did not impact any data reported to its clients.
C-8

Donald C. Cook Nuclear Plant                                                                                                                                     Annual Radiological Environmental Operating Report 2015 Table C-1 2015 Inter-Laboratory Radiological Proficiency Testing Results and Acceptance Criteria
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EZA               4th/2014              03/10/15       E11057                                      Cartridae                PCi                     lodine-131               8.70E+01                   9.89E+01                      0.88.                 Acceptable EZA               4th/2014              03/10/15       E11058                                           Milk               pCi/L                  Strontium-89               9.09E+01                   9.57E+01                      0.95                  Acceptable EZA               4th/2014              03/10/15       E11058                                           Milk               pCi/L                  Strontium-90                1.39E+01                  1.56E+01                      0.89                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                    lodine-131                9.34E+01                  9.51 E+01                     0.98                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                   Cerium-141                2.33E+02                   2.19E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               PCi/L                        Cr-51                 4.22E+02                  4.06E+02                      1.04                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                   Cesium-134                 1.50E+02                  1.64E+02                      0.91                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                   Cesium-137                2.16E+02                   1.98E+02                      1.09                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                     Cobalt-58                1.32E+02                  1.30E+02                      1.02                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                        Mn-54                 2.39E+02                  2.25E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               PCi/L                       lron-59                1.80E+02                  1.75E+02                      1.03                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                       Zinc-65                3.32E+02                  2.97E+02                      1.12                  Acceptable EZA               4th/2014              03/10/15       E11059                                           Milk               pCi/L                     Cobalt-60                2.49E+02                  2.35E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                PCi/L                    lodine-131                1.11 E+02                 9.53E+01                      1.16                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                   Cerium-141                 3.02E+02                  2.84E+02                      1.06                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                        Cr-51                 5.43E+02                  5.26E+02                      1.03                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                   Cesium-134                 1.90E+02                  2.13E+02                      0.89                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                   Cesium-137                 2.58E+02                  2.57E+02                      1.01                  Acceptable EZA               4th/2014              03/10/15       E11060                                         Water                pCi/L                     Cobalt-58                1.73E+02                  1.68E+02                      1.03                  Acceptable EZA              4th/2014              03/10/15       E11060                                         Water                pCi/L                        Mn-54                 3.06E+02                  2.92E+02                      1.05                  Acceptable EZA              4th/2014              03/10/15       E11060                                         Water                pCi/L
* lron-59                2.51E+02                  2.26E+02                      1.11                  Acceptable EZA              4th/2014              03/10/15       E11060                                         Water                pCi/L                       Zinc-65                4.20E+02                  3.84E+02                      1.09                  Acceptable EZA              4th/2014             .03/10/15       E11060                                         Water                pCi/L                     Cobalt-60                3.24E+02                  3.04E+02                      1.06                  Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Barium-133                    73.2                      67.6                    56.4-74.4                Acceptable .
ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Cesium-134                    51.9                       51.3                   41.3-56.4                Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Cesium-137                     142                       124                     112-139                Not Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                     Cobalt-60                   62.7                       62.4                   56.2-71.2                Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                       Zinc-65                    107                       98.7                   88.8-118                 Acceptable ERA              1st/ 2015             02/23/15       RAD-100                                        Water                pCi/L                   Gross Alpha                   67.2                       62.3                   32.6-77.3                Acceptable C-9

Donald C. Cook Nuclear Plant                                      Annual Radiological Environmental Operating Report 2015 ERA      1st/ 2015 02/23/15  RAD-100  Water             Gross Beta                      48.9                      Acceptable ERA      1st/ 2015 02/23/15  RAD-100  Water             Gross Al ha                     62.3      32.6-77.3 ERA      1st/ 2015 02/23/15  RAD-100  Water             Radium-226         16.1         16.8      12.5-19.2 ERA      1st/2015  02/23/15  RAD-100  Water             Radium-226         16.9         16.8      12.5-19.2 ERA      1st/ 2015 02/23/15  RAD-100  Water             Radium-226         16.8         16.8      12.5-19.2       Acceptable ERA      1st/ 2015 02/23/15  RAD-1 00 Water             Radium-228         4.50         5.12      3.07-6.85 ERA      1st/ 2015 02/23/15  RAD-1 00 Water             Radium-228         7.40         5.12      3.07-6.85 ERA      1st/ 2015 02/23/15  RAD-100  Water            Uranium (Nat        11.0         10.6      8.27-12.2       Acceptable ERA      1st/ 2015 02/23/15  RAD-100  Water                                16.4         15.5      12.1-17.9 ERA      1st/ 2015 02/23/15  RAD-100  Water                                11.3         10.6      8.27-12.2 ERA      1st/ 2015 02/23/15  RAD-100  Water                                17.1         15.5      12.1-17.9       Acceptable ERA      1st/ 2015 02/23/15  RAD-100  Water                Tritium        10000        10600     9220-11700 ERA      1st/ 2015 02/23/15  RAD-100  Water            Strontium-89        47.3         52.1      41.2-59.6 ERA      1st/2015  02/23/15  RAD-100  Water            Strontium-90        26.7         32.4     *23.7-37.5 ERA      1st/ 2015 02/23/15  RAD-'100 Water            Strontium-89        54.6         52.1      41.2-59.6 ERA      1st/ 2015 02/23/15  RAD-100                   Strontium-90        24.6         32.4      23.7-37.5 EZA       1st/2015 05/21/15  E11174                      lodine-131     8.01E+01     7.74E+01        1.03 EZA       1st/2015 05/21/15  E11175    Milk            Strontium-89     9.75E+01     1.05E+02        0.93         Acceptable EZA       1st/2015 05/21/15  E11175    Milk            Strontium-90     1.10E+01     1.44E+01        0.77 EZA       1st/2015 05/21/15  E11176    Milk              lodine-131     9.60E+01     9.75E+01        0.98 EZA       1st/2015 05/21/15  E11176    Milk             Cerium-141      2.13E+02     2.11E+02        1.01 EZA       1st/2015 05/21/15  E11176    Milk            Chromium-51      5.88E+02     5.55E+02      . 1.06         Acceptable EZA       1st/2015 05/21/15  E11176    Milk             Cesium-134      1.71E+02     1.91 E+02        0.9 EZA       1st/2015 05/21/15  E11176    Milk             Cesium-137      2.59E+02     2.53E+02        1.02 EZA       1st/2015 05/21/15  E11176    Milk               Cobalt-58     2.64E+02     2.72E+02        0.97 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L     Man anese-54      2.43E+02     2.40E+02        1.01 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L          lron-59      3.14E+02     2.95E+02        1.06 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L          Zinc-65      4.67E+02     4.53E+02        1.03 EZA       1st/2015 05/21/15  E11176    Milk  Ci/L         Cobalt-60     4.81E+02     4.98E+02        0.97         Acceptable EZA       1st/2015 05/21/15  E11175   Water  Ci/L        lodine-131     9.92E+01     9.67E+01        1.03 EZA       1st/2015 05/21/15  E11177   Water  Ci/L       Cerium-141      1.40E+02     1.39E+02        1.01 EZA       1st/2015 05/21/15  E11177   Water pCi/L      Chromium-51      3.95E+02     3.66E+02        1.08 .       Acceptable C-10

Donald C. Cook Nuclear Plant                                                          Annual Radiological Environmental Operating Report 2015
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EZA       1st/2015     05/21/15   E11177          Water    pCi/L          Cesium-134         1.12E+02                1.26E+02                0.89    Acceptable EZA       1st/2015     05/21/15   E11177          Water    PCi/L          Cesium-137        *1.69E+02                1.67E+02                1.01    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L           Cobalt-58         1.78E+02                1.80E+02                0.99    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L        Manoanese-54         1.66E+02                1.59E+02                1.05    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L            lron-59          2.14E+02                1.95E+02                1.10    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L            Zinc-65          3.25E+02                2.99E+02                1.09    Acceptable EZA       1st/2015     05/21/15   E11177          Water    pCi/L           Cobalt-60         3.23E+02                3.28E+02                0.98    Acceptable MAPEP    2nd/2015      06/16/15   E11177          Filter Sq/sample       Gross Alpha            1.520                  1.770              0.53-3.01  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP GrF32 Filter Sq/sample        Gross Beta            0.844                  0.750              0.38-1.13  Acceptable MA PEP   2nd/2015
* 06/16/15   MAPEP GrF32  Soil    Bq/Kq        Americium-241           114.0                   97.0                68-126   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaS32   Soil    Bq/Kq          Cesium-134             639                    678               475-881    Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15 MaS32   Soil    Bq/Kg          Cesium-137           -0.279                             False Pos Test     Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq           Cobalt-57            0.369                             False Pos Test     Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg           Cobalt-60             852                    817               572-1062   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg            lron-55              330                    205              Sens. Eval. Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq        Manganese-54            1280                   1198               839-1557   Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq           Nickel-63             481                    448                314-582   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg        Plutonium-238            80.3                   83.9             58.7-109.1  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg      Plutonium-239/240          69.1                   70.8              49.6-92.0  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg         Potassium-40            684                    622               435-809    Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg         Strontium-90            601                    653               457-849    Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil. Bq/Kq        Technetium-99            694                    867               607-1127   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaS32   Soil    Bq/Kq           U-234/233              58                     53               36.8-68.3  Acceptable MA PEP   2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kq         Uranium-238             204                    201                141-261   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaS32  Soil    Bq/Kg            Zinc-65           1190.0                   1064               745-1383   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP MaW32 Water     Bq/L        Americium-241           0.657                  0.654            0.458-0.850  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L          Cesium-134            20.80                   23.5              16.5-30.6  Acceptable MA PEP   2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L          Cesium-137             19.7                   19.1              13.4-24.8  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L           Cobalt-57              30                    29.9              20.9-38.9  Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L           Cobalt-60              0.0                             False Pos Test     Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L          Hydrogen-3             633                    563                394-732   Acceptable MAPEP    2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L            lron-55              8.81                   6.88              4.82-8.94  Acceptable MA PEP   2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L        Manganese-54            0.314                             False Pos Test     Acceptable MA PEP   2nd/2015      06/16/15   MAPEP-15-MaW32  Water     Bq/L           Nickel-63            0.350                             False Pos Test     Acceptable C-11

Donald C. Cook Nuclear Plant                                            Annual Radiological Environmental Operating Report 2015 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water                             0.770       0.832 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water        Potassium-40         0.159                 False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water        Strontium-90          8.49        9.48       6.64-12.32 MA PEP   2nd/2015  06/16/15   MAPEP-15-MaW32  Water       Technetium-99          2.90        3.18        2.23-4.13 MA PEP   2nd/2015  06/16/15   MAPEP-15-MaW32  Water      Uranium-234/233         0.146       0.148     0.104-0.192 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water        Uranium-238          0.918       0.970        0.68-1.26 MAPEP    2nd/2015  06/16/15   MAPEP-15-MaW32  Water           Zinc-65          19.600        18.30       12.8-23.8 MA PEP   2nd/2015  06/16/15   MAPEP-15-GrW32  Water         Gross Al ha          1.050       1.066     0.320-1.812 MAPEP    2nd/2015  06/16/15   MAPEP-15-GrW32  Water         Gross Beta          3.220        2.79        1.40-4.19 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Uranium-235           0.014       0.015    0.0103-0.0191 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Uranium-238           7.65        7.96       5.57-10.35 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter      Uranium-Total          7.96          8.0      5.58-10.36 MAPEP    2nd/2015  06/16/15   MAPEP-15-Rd F32 Filter      Americium-241        0.0657        0.068    0.0477-0.0885 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter        Cesium-134          1.0600        1.15       0.81-1.50 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdF32  Filter        Cesium-137         0.0166                 False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-Rd F32 Filter         Cobalt-57           1.590        1.51       1.06-1.96 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter         Cobalt-60
* 0.016                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter      Man anese-54           0.998        1.02       0.71-1.33 MAPEP    2nd/2015  06/16/15  .MAPEP-15-RdF32  Filter      Plutonium-238        0.00005                False Pos Test    Acceptable MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter    Plutonium-239/240       0.0788      0.0847    0.0593-0.1101     Acee table MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Strontium-90         -0.025                False Pos Test    Acceptable MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32  Filter    Uranium-234/233          0.017      0.0155    0.0109-0.0202 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdF32  Filter       Uranium-238          0.0958       0.099     0.069-0.129 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdF32                  Zinc-65            0.867       0.83        0.58-1.08 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32              Americium-241          0.116        0.11     0.076-0.140 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32                Cesium-134           6.44        7.32        5.12-9.52 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32                Cesium-137           9.30        9.18       6.43-11.93 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32                 Cobalt-57           0.037                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32                 Cobalt-60           5.680       5.55        3.89-7.22 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32              Man anese-54           0.009                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32              Plutonium-238          0.084       0.085     0.060-0.111 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32            Plutonium-239/240       0.0898       0.094     0.066-0.122 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32               Strontium-90          0.852        1.08       0.76-1.40 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32             Uranium-234/233         0.023       0.022    0.0153-0.0283 MA PEP   2nd/2015  06/16/15   MAPEP-15-RdV32               Uranium-238           0.129       0.128     0.090-0.166 MAPEP    2nd/2015  06/16/15   MAPEP-15-RdV32                  Zinc-65          -0.0058                False Pos Test MAPEP    2nd/2015  06/16/15   MAPEP-15-SrF-32 Filter       Strontium-89          41.7         47.5       33.3-61.8 C-12

Donald C. Cook Nuclear Plant                                          Annual Radiological Environmental Operating Report 2015 MAPEP    2nd/2015  06/16/15  MAPEP-15-XaW-32 Water                              1.72       1.49        1.04-1.94 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Actinium-228           1090        1250       802-1730 ERA      2nd/2015  05/19/15  MRAD-22          Soil     Americium-241           1410        1500       878-1950 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Bismuth-212           1090        1780       474-2620 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Bismuth-214           4340        4430       2670-6380 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Cesium-134            6020        6390      4180-7680 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Cesium-137            1540        1490       1140-1920 ERA      2nd/2015  05/19/15  MRAD-22          Soil        Cobalt-60            2010        1880       1270-2590 ERA      2nd/2015  05/19/15. MRAD-22          Soil        Lead-212             1200        1230        806-1710 ERA      2nd/2015  05/19/15  MRAD-22          Soil        Lead-214             4890        4530       2640-6760 ERA      2nd/2015  05/19/15  MRAD-22          Soil     Man anese-54            <49.9      <1000         0-1000 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Plutonium-238           978         998       600-1380 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Plutonium-239          1240        1210       791-1670 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Potassium-40          10900       10700      7810-14400       Acceptable ERA      2nd/2015  05/19/15  MRAD-22          Soil       Strontium-90          1230        1940        740-3060 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Thorium-234           3840        3890       1230-7320 ERA      2nd/2015  05/19/15  MRAD-22          Soil          Zinc-65            8030        7130      5680-9470        Acceptable ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-234           3754        3920       2400-5050       Acee table ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-238           3565        3890       2410-4930       Acceptable ERA      2nd/2015  05/19/15  MRAD-22          Soil      Uranium-Total          7319        7990      4330-10500 ERA      2nd/2015  05/19/15  MRAD-22          Soil   Uranium-Total mass        8030        7130       5680-9470 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-234           4040        3920       2400-5050 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-238           4230        3890       2410-4930 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Uranium-Total          8477        7990      4330-10500 ERA      2nd/2015  05/19/15  MRAD-22          Soil   Uranium-Total mass        8030        7130       5680-9470 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-234           4480.       3920       2400-5050 ERA      2nd/2015  05/19/15  MRAD-22          Soil       Uranium-238           4020        3890       2410-4930 ERA      2nd/2015  05/19/15  MRAD-22          Soil      Uranium-Total          8683        7990      4330-10500 ERA      2nd/2015  05/19/15  MRAD-22          Soil   Uranium-Total mass        12000       7130       5680-9470 ERA      2nd/2015  05/19/15  MRAD-22                 Uranium-Total mass        12800      11600      6390-14600 ERA      2nd/2015  05/19/15  MRAD-22                     Uranium-234           3480        3150       2070-4050 ERA      2nd/2015  05/19/15  MRAD-22                     Uranium-238           3090        3130       2090-3980 ERA      2nd/2015  05/19/15  MRAD-22                    Uranium-Total        . 6716        6420       4350-7990 ERA      2nd/2015  05/19/15  MRAD-22                 Uranium-Total mass        9370     6280-11900    3540-6710 ERA      2nd/2015  05/19/15  MRAD-22                        Am-241             5130        4340       2650-5770 ERA      2nd/2015  05/19/15  MRAD-22                     Cesium-134            2210        2650       1700-3440 ERA      2nd/2015  05/19/15  MRAD-22                     Cesium-137            1790        1810       1310-2520 C-13

Donald C. Cook Nuclear Plant                                                                                                       Annual Radiological Environmental Operating Report 2015
                          *** Report *
                                               *.>::)'if:J1:*'*.: ** ::*~!*~1~:}.~~mple  * ~:i                                                      GE~.\~i.;~L1.;~:* Known*,*,:'.. 1~~; Rangef'Ratio
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* i. .~:S:luarter/  *.Receiyed .'                                                                   .: '                                                                             Acc~ptance;.,. ; i::. 1 Providefa~ ;::~';?Year    .: .,*., Date': ... :i' Samoie'r\li.miber \'                                      . ,.                        1*~    **.
Value'"''''T*N: .. . value*.*~*.,::                      ~f&#xa5;;f;.: ~' Evalu~ti'* . . **
1:
ERA           2nd/2015         05/19/15       MRAD-22                         Veaetation          pCi/kq               Cobalt-60                    1570                1540                 1060-2150                   Acceotable ERA           2nd/2015         05/19/15       MRAD-22                         Veaetation          oCi/kq              Curium-244                   1370                 1360                  666-2120                   Acceptable ERA           2nd/2015         05/19/15       MRAD-22                         Veaetation          pCi/ka            Manganese-54                   <31.1                <300                    0-300                    Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg            Plutonium-238                  4700                 3680                 2190-5040                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation          pCi/kq            Plutonium-239                  5120                 4180                 2570-5760                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg             Potassium-40                  33100              30900                22300-43400                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation          pCi/ka             Strontium-90                  5920                 6590                 3760-8740                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veoetation          pCi/kq             Uranium-234                   3230                 3150                 2070-4050                   Acceptable ERA          _ 2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg             Uranium-238                   3340                 3130                 2090-3980                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Vegetation          pCi/kg            Uranium-Total                  6742                 6420                 4350-7990                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation           ua/ka         Uranium-Total(mass)               10000                9370                 3540-6710                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation           ua/ka         Uranium-Total(mass)               8780                 5280                 3540-6710                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veoetation          pCi/kq            Uranium-Total                  8780                 6420                 4350-7990                Not Acceotable ERA            2nd/2015        05/19/15       MRAD-22                         Veaetation          oCi/kq                Zinc-65                     1250                1090                  786-1530                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter         Americium-241                    50.2                49.8                  30.7-67.4                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter            Cesium-134                     951                 909                  578-1130                   Acceptable ERA            2nd/2015.       05/19/15       MRAD-22                             Filter        pCi/Filter            Cesium-137                    1320                1170                  879-1540                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter             Cobalt-60                    87.6                79.1                  61.2-98.8                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter              lron-55                      879               836.0                  259-1630                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Manoanese-54                   <6.09                 <50                  0.00-50.0                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ug/Filter          Plutonium-238                   57.1                52.1                  35.7-68.5                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Plutonium-239                   46.0                40.3                  29.2-52.7                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Strontium-90                   84.6                96.6                  47.2-145                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-234                    34.7                34.3                 21.3-51.7                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-238                    34.5                34.0                  17.8-38.2                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Uranium-Total                   70.9                69.9                   38.7-106                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ua/Filter       Uranium-Total(mass)                 103                 102                   65.3-144                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter              Zinc-65                     1190                 986                  706-1360                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-234                    39.2                34.3                  21.3-51.7                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter           Uranium-238                    34.9                34.0                  17.8-38.2                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        pCi/Filter          Uranium-Total                   75.7                69.9                   38.7-106                  Acceotable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ua/Filter       Uranium-Total(mass)                 105                 102                   65.3-144                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter         ug/Filter       Uranium-Total(mass)                95.5                 102                  52.9-116                   Acceptable ERA            2nd/2015        05/19/15       MRAD-22
* Filter        pCi/Filter           Gross Aloha                    77.2                62.2                  20.8-96.6                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                             Filter        oCi/Filter            Gross Beta                    62.7                58.4                  36.9-85.1                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                            Water             pCi/L            Americium-241                   48.5                46.0                  31.0-61.7                  Acceptable ERA            2nd/2015        05/19/15       MRAD-22                            Water             pCi/L              Cesium-134                    1180                1260                  925-1450                   Acceotable ERA            2nd/2015        05/19/15       MRAD-22                            Water             pCi/L              Cesium-137                    1410                1360                 1150-1630                   Acceptable C-14

Donald C. Cook Nuclear Plant                                       Annual Radiological Environmental Operating Report 2015 ERA      2nd/2015  05/19/15  MRAD-22  Water             lron-55             1080        1070       638-1450 ERA      2nd/2015  05/19/15  MRAD-22  Water        Man anese-54             <5.41       <100       0.00-100 ERA      2nd/2015  05/19/15  MRAD-22  Water         Plutonium-238            81.0        72.4      53.6-90.1 ERA      2nd/2015  05/19/15  MRAD-22  Water         Plutonium-239            205         184        143-232 ERA      2nd/2015  05/19/15- MRAD-22  Water          Strontium-90            865         912       594-1210 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-234             68.5.       61.8      46.4-79.7 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-238             71.8        61.3      46.7-75.2 ERA      2nd/2015  05/19/15  MRAD-22  Water         Uranium-Total            140         126       92.6-163 ERA      2nd/2015  05/19/15  MRAD-22  Water      Uranium-Total mass          214          184       147-222 ERA       2nd/2015 05/19/15  MRAD-22  Water             Zinc-65              1310        1180      984-1490 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-234             60.7        61.8      46.4-79.7 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-238             58.0        61.3      46.7-75.2 ERA      2nd/2015  05/19/15  MRAD-22  Water         Uranium-Total             121        126       92.6-163 ERA      2nd/2015  05/19/15  MRAD-22  Water      Uranium-Total(mass           174         184       147-222 ERA      2nd/2015  05/19/15  MRAD-22  Water          Uranium-234             64.1        61.8      46.4-79.7 ERA       2nd/2015 05/19/15  MRAD-22  Water          Uranium-238             60.4        61.3      46.7-75.2 ERA       2nd/2015 05/19/15  MRAD-22  Water         Uranium-Total             127         126      92.6-163        Acceptable ERA       2nd/2015 05/19/15  MRAD-22  Water      Uranium-Total mass)          181         184       147-222 ERA       2nd/2015 05/19/15  MRAD-22  Water      Uranium-Total(mass           176         184       147-222 ERA       2nd/2015 05/19/15  MRAD-22  Water          Gross Al ha              128         119      42.2-184 ERA       2nd/2015 05/19/15  MRAD-22  Water           Gross Beta            155.0       158.0      90.5-234 ERA       2nd/2015 05/19/15  MRAD-22  Water             Tritium             10600       10300     6900-14700 ERA       2nd/2015 05/26/15  RAD-101  Water           lodine-131             18.2        23.8      19.7-28.3 ERA       2nd/2015 05/26/15  MRAD-22  Water           lodine-131             23.5        23.8      19.7-28.3 EZA       2nd/2015 08/06/15  E11216  Cartrid e        lodine-131          8.92E+01    8.01E+01        1.11 EZA       2nd/2015 08/06/15  E11217    Milk          Strontium-89         9.13E+01    9.26E+01        1.11 EZA       2nd/2015 08/06/15  E11217    Milk          Strontium-90         1.16E+01    1.27E+01        0.91 EZA       2nd/2015 08/06/15  E11218    Milk           lodine-131          1.05E+02    9.59E+01        1.10 EZA       2nd/2015 08/06/15  E11218    Milk          Cerium-141          -2.70E+OO    Not Pres.
EZA       2nd/2015 08/06/15  E11218    Milk         Chromium-51           2.70E+02    2.76E+02        0.98 EZA       2nd/2015 08/06/15  E11218    Milk          Cesium-134           1.46E+02    1.63E+02        0.90 EZA       2nd/2015 08/06/15  E11218    Milk          Cesium-137           1.31 E+02   1.25E+02        1.05 EZA       2nd/2015 08/06/15  E11218    Milk            Cobalt-58          7.1.8E+01   6.84E+01        1.05 EZA       2nd/2015 08/06/15  E11218    Milk         Man anese-54          1.02E+02    1.01 E+02       1.01 EZA       2nd/2015 08/06/15  E11218    Milk             lron-59           1.51 E+02   1.51E+02        1.00 EZA       2nd/2015 08/06/15  E11218    Milk             Zinc-65           2.63E+02    2.48E+02        1.06 EZA       2nd/2015 08/06/15  E11218    Milk            Cobalt-60          1.96E+02    1.93E+02        1.02 C-15

Donald C. Cook Nuclear f>lant                                                                                            Annual Radiological Environmental Operating Report 2015
        .             .* Repo'rt       . .:.:.    :  '
PT        Quarter I Provider: ', . Year
                       .Rece,ived Date
                                       *'f~<~  ':",., .
Sampfo'Number *
                                                             .\.
                                                                       .Sample Media )~:;:'dnit     >'AfX~i'yte I Nuclide . ~:!i~
* GEL Value*
                                                                                                                                        *\,;f':. ,*
Known
                                                                                                                                                     'value
                                                                                                                                                              >,-;:Acceptance, N:.: :Range/ Ratio .. "
                                                                                                                                                                                    +,
                                                                                                                                                                                                   .*~~- ~**
Evaluatio'ri' *. ' :
EZA         2nd/2015     08/06/15  E11219                                  Water      oCi/L            lodine-131               9.53E+01            9.34E+01            1.02             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      oCi/L           Cerium-141                1.24E-01            Not Pres.             -              Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L          Chromium-51                3.47E+02            2.93E+02            1.18             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L           Cesium-134                1.63E+02            1.73E+02            0.94             Acceotable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L           Cesium-137                1.34E+02            1.33E+02            1.01             Acceotable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L             Cobalt-58               7.21 E+01           7.26E+01            0.99             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L         Manoanese-54                1.17E+02            1.07E+02            1.10             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      oCi/L              lron-59                1.76E+02            1.61E+02            1.09             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water    . pCi/L              Zinc-65                2.85E+ci2           2.64E+02            1.08             Acceptable EZA         2nd/2015     08/06/15  E11219                                  Water      pCi/L             Cobalt-60               2.10E+02            2.05E+02            1.03             Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L           Barium-133                   63.9                64.7          53.9-71.2           Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L           Cesiurn-134                  45.2                50.1          40.3-55.1           Acceotable ERA         3rd/ 2015    08/25/15  RAD - 102                               Water      oCi/L           Cesium-137                   90.5                89.9           80.8-101           Acceotable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L             Cobalt-60                  58.7                59.9          53.9-68.4           Acceotable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L              Zinc-65                   282                 265            238-310            Acceptable ERA         3rd/ 2015    08/25/15  RAD - 102                               Water      pCi/L           Gross Aloha                  37.1                34.5          17.7-44.5           Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L           Gross Beta                   26.2                25.1          15.6-33.1           Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L           Gross Alpha                  35.3                34.5          17.7-44.5           Acceptable ERA         3rd/ 2015    08/25/15  RAD- 102                                Water      pCi/L           Radium-226                   15.9                15.2           11.3-17.4          Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L           Radium-226                   15.7                15.2           11.3-17.4          Acceotable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L           Radium-226                   15.1                15.2          11.3-17.4
* Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      pCi/L           Radium-228                   5.31                5.12          3.13-6.95           Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      pCi/L           Radium-228                   5.14                5.12          3.13-6.95           Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L          Uranium !Nat)                 24.2                 24           19.3-27.0           Acceotable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      ua/L       Uranium (Natl mass                37.9                 35           28.1-39.4           Acceptable ERA         3rd/ 2015    08/25/15  RAD - 102                               Water      pCi/L          Uranium (Nat)                 23.4                 24            19.3-27.0          Acceptable ERA         3rd/2015     08/25/15  RAD-102                                 Water      ug/L       Uranium (Nat) mass                34.9                 35           28.1-39.4           Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L              Tritium                  14500               15600         13600-17200         *Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      pCi/L          Strontium-89                  24.1                42.1          32.3-49.2         Not Acceptable ERA         3rd/ 2015    08/25/15  RAD-102                                 Water      oCi/L          Strontium-90                  27.7                26.8           19.4-31.2          Acceptable ERA         3rd/ 2015    08/25/15  RAD -102                                Water      oCi/L            lodine-131                  24.7                25.7          21.3-30.3           Acceptable EZA          3rd/2015    11/15/15  E11310                             Cartridoe        pCi             lodine-131               8.21E+01            8.15E+01            1.01             Acceptable EZA          3rd/2015    11/15/15  E11311                                   Milk      pCi/L          Strontium-89               8.79E+01            9.91E+01            0.89             Acceotable EZA          3rd/2015    11 /15/15 E11311                                   Milk      oCi/L          Strontium-90               1.07E+01            1.64E+01            0.65             Acceptable EZA          3rd/2015    11/15/15  E11312                                   Milk      pCi/L            lodine-131               9.61 E+01           9.99E+01            0.96             Acceptable EZA          3rd/2015    11/15/15  E11312                                   Milk      pCi/L           Cerium-141                2.15E+02            2.13E+02            1.01             Acceotable EZA          3rd/2015    11/15/15  E11312                                   Milk      oCi/L          Chromium-51                5.82E+02            5.38E+02            1.08             Acceotable EZA          3rd/2015    11/15/15  E11312                                   Milk      pCi/L           Cesium-134                1.89E+02            2.12E+02            0.89             Acceptable
                                                                                            . C-16

Donald C. Cook Nuclear Plant                                                 Annual Radiological Environmental Operating Report 2015 EZA       3rd/2015  11/15/15  E11312          Milk                                                              0.95 EZA       3rd/2015  11/15/15  E11312          Milk             Man anese-54        3.02E+02     2.90E+02        1.04 EZA       3rd/2015  11/15/15  E11312          Milk                 lron-59         2.30E+02     2.26E+02        1.02 EZA       3rd/2015  11 /15/15 E11312          Milk                 Zinc-65         3.62E+02     3.53E+02        1.02 EZA       3rd/2015  11/15/15  E11312          Milk                Cobalt-60        3.42E+02     3.30E+02        1.04 EZA       3rd/2015  11/15/15  E11313.        Water               lodine-131        1.00E+02     9.67E+01        1.03 EZA       3rd/2015  11/15/15  E11313         Water               Cerium-141        2.05E+02     1.99E+02        1.03 EZA       3rd/2015  11/15/15  E11313         Water             Chromium-51         5.42E+02     5.02E+02        1.08 EZA       3rd/2015  11/15/15  E11313         Water               Cesium-134        1.75E+02     1.98E+02        0.89 EZA       3rd/2015  11/15/15  E11313         Water               Cesium-137        2.40E+02     2.38E+02        1.01 EZA       3rd/2015  11/15/15  E11313         Water                Cobalt-58        2.45E+02     2.46E+02        1.00 EZA       3rd/2015  11/15/15  E11313         Water             Man anese-54
* 2.88E+02     2.71E+02        1.06 EZA       3rd/2015  11/15/15  E11313         Water                 lron-59         2.31E+02     2.11E+02        1.10 EZA       3rd/2015  11/15/15  E11313         Water                 Zinc-65         3.75E+02     3.30E+02        1.14 EZA       3rd/2015  11/15/15  E11313         Water  pCi/L         Cobalt-60        3.11E+02     3.08E+02        1.01         Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-GrF33 Filter             Gross Al ha          0.999        0.900      0.27-1.53       Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-GrF33 Filter              Gross Beta          1.570        1.560      0.78-2.34       Acceptable MAPEP    4th /2015  12/03/1.5 MAPEP-15-MaS33  Soil            Americium-241           61.7         49.5      34.7-64.4        Warn in MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil               Cesium-134            933         1010      707-1313        Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil               Cesium-137         861.00         809       566-1052        Acee table MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                Cobalt-57           1240         1180      826-1534        Acceptable MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                Cobalt-60           2.45         1.30     Sens. Eval.
MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                 lron-55             557         555        389-722 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil             Man anese-54           1450         1340      938-1742 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil                Nickel-63            625         682        477-887 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil             Plutonium-238         100.00       97.50      68.3-126.8 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil           Plutonium-239/240        76.7         80.4      56.3-104.5 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil              Potassium-40           687         599        419-779 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil              Strontium-90           403         425        298-553 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil             Technetium-99           639         631        442-820 MAPEP    4th /2015  12/03/15  MAPEP-15-MaS33  Soil                U-234/233             59          56         39-73 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil              Uranium-238            208         220        154-286 MA PEP   4th /2015  12/03/15  MAPEP-15-MaS33  Soil                 Zinc-65           761.0         662        463-861 MAPEP    4th /2015  12/03/15  MAPEP-15-MaW33 Water             Americium-241          1.030       1.055     0.739-1.372 MAPEP     4th /2015 12/03/15  MAPEP-15-MaW33 Water               Cesium-134          21.20         23.1       16.2-30.0 MAPEP     4th /2015 12/03/15  MAPEP-15-MaW33 Water               Cesium-137         0.00355                False Pos Test MAPEP     4th /2015 12/03/15  MAPEP-15-MaW33 Water                Cobalt-57             21         20.8       14.6-27.0 C-17

Donald C. Cook Nuclear Plant                                                           Annual Radiological Environmental Operating Report. 2015 tr:;#~!~':;ti~~mi~rl-1                                                                                           c* r~?:~-~
MAPEP    4th/2015  12/03/15  MAPEP-15-MaW33      Water       Ba/L           Cobalt-60          17.5         17.1        12.0-22.2       Acceotable MAPEP    4th /2015 12/03i15  MAPEP-15-MaW33      Water       Ba/L          Hvdroaen-3           212          216         151-281        Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L            lron-55           12.7         13.1        9.2-17.0      , Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Bq/L        Manganese-54           15.9        15.6        10.9-20.3       Acceotable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L           Nickel-63           8.7          8.6       5.99-11.12       Acceotable MAPEP    4th /2015 12/03/15. MAPEP-15-MaW33      Water       Bq/L        Plutonium-238         0.607       0.681      0.477-0.885       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Bq/L      Plutonium-239/240       0.843       0.900      0.630-1.170       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33. Water       Bq/L         Potassium-40          210          214         150-278        Acceptable MAPEP    4th /2015 12/03/15  .MAPEP-15-MaW33     Water       Ba/L         Strontium-90         4.06         4.80        3.36-6.24       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-MaW33     Water       Ba/L        Technetium-99          7.27        7.19        5.03-9.35       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-MaW33     Water       Ba/L       Uranium-234/233        1.130        1.140       0.80-1.48       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L         Uranium-238          1.180        1.180       0.83-1.53       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-MaW33      Water       Ba/L            Zinc-65            14.7        13.9         9.7-18.1       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-GrW33      Water       Ba/L         Gross Alpha          0.425       0.429      0.129-0.729       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-GrW33      Water       Bq/L          Gross Beta           3.59        3.52        1.76-5.28       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample       Uranium-235         0.0769       0.086      0.060-0.112       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample       Uranium-238           11.2 __,     11.9        8.3-15.5       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample      Uranium-Total         11.30         12.0        8.4-15.6       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   ug/sample      Americium-241        0.1550        0.147     0.103-0.191       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-Rd F33     Filter   Bq/sample        Cesium-134         2.2900        2.45        1.72-3.19       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Sq/sample        Cesium-137          1.940         1.96       1.37-2.55       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample         Cobalt-57          2.870        2.74        1:92-3.56       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Sq/sample         Cobalt-60          1.800         1.71       1.20-2.22       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample      Manganese-54         22.200        2.11        1.48-2.74       Acceptable MA PEP   4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample      Plutonium-238         0.099       0.104      0.073-0.135       Acceptable MAPEP    4th /2015 12/03/15  l\JiAPEP-15-RdF33   Filter   Ba/sample    Plutonium-239/240       0.004       0.0025     Sens. Eval.       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample       Strontium-90         2.090        2.18        1.53-2.83       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Sq/sample     Uranium-234/233        0.153        0.143     0.100-0.186       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample       Uranium-238          0.159        0.148     0.104-0.192       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdF33      Filter   Ba/sample          Zinc-65           1.560         1.32       0.92-1.72       Acceptable MA PEP   4th /2015 12/03/15   MAPEP-15-RdV33   Veaetation Ba/sample      Americium-241         0.128         0.11     0.076-0.140       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-RdV33   Vegetation Ba/samole        Cesium-134          5.180         5.80       4.06-7.54       Acceptable MAPEP    4th /2015 12/03/15  MAPEP-15-RdV33    Vegetation Ba/sample        Cesium-137         0.0326                 False Pas Test     Acceptable MAPEP    4th /2015 12103/15  MAPEP-15-RdV33    Veaetation Ba/sample         Cobalt-57          6.980        6.62        4.63-8.61       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-RdV33   Vegetation Ba/sample         Cobalt-60          4.810        4.56        3.19-5.93       Acceptable MAPEP    4th /2015 12/03/15   MAPEP-15-RdV33   Vegetation Ba/sample      Manganese-54          7.840        7.68        5.38-9.98       Acceptable MA PEP   4th /2015 12/03/15   MAPEP-15-RdV33   Veaetation Ba/sample      Plutonium-238       0.000495      0.0007     Sens. Eval.       Acceptable MA PEP   4th /2015 12/03/15   MAPEP" 15-RdV33  Vegetation Ba/samole    Plutonium-239/240      0.0654        0.077     0.054-0.100       Acceptable C-18

Donald C. Cook Nuclear Plant                                            *Annual Radiological Environmental Operating Report 2015 MAPEP                                                                                                    0.91-1.69 MA PEP   4th /2015  12/03/15 MAPEP-15-RdV33                                      0.192       0.162      0.113-0.211 MAPEP    4th /2015  12/03/15 MAPEP-15-RdV33               Uranium-238            0.192       0.168      0.118-0.218 MAPEP    4th /2015  12/03/15 MAPEP-15-RdV33                   Zinc-65            6.120        5.46       3.82-7.10 MAPEP    4th /2015  12/03/15 MAPEP-15-RdF33                Gross Al ha           0.999        0.900       0.27-1.53 MAPEP    4th /2015  12/03/15 MAPEP-15-RdF33
* Filter        Gross Beta            1.57         1.56       0.78-2.34 MA PEP   4th /2015  12/03/15 MAPEP-15-SrF-33  Filter      Strontium-89           3.313        3.98       2.79-5.17 MA PEP   4th /2015  12/03/15 MAPEP-15-SrF-33  Filter      Strontium-90           0.862         1.05       0.74-1.37 ERA      3rd I 2015 11/24/15 MRAD-23          Soil        Actinium-228           1220         1240        795-1720 ERA      3rd I 2015 11/24/15 MRAD-23          Soil       Americium-241            667          539         315-700 ERA      3rd I 2015 11/24/15 MRAD-23          Soil         Bismuth-212           1240         1240        330-1820 ERA      3rd I 2015 11/24/15 MRAD-23          Soil         Bismuth-214           1690         2660       1600-3830 ERA      3rd I 2015 11/24/15 MRAD-23          Soil         Cesium-134            2250         2420       1580-2910 ERA      3rd/2015   11/24/15 MRAD-23          Soil         Cesium-137            5400         5120       3920-6590 ERA      3rd I 2015 11/24/15 MRAD-23          Soil           Cobalt-60           4290         3900       2640-5370 ERA      3rd I 2015 11/24/15 MRAD-23           Soil          Lead-212            1290         1240        812-1730 ERA      3rd I 2015 11/24/15 MRAD-23           Soil          Lead-214            2090         2800       1630-4180 ERA      3rd I 2015 11/24/15 MRAD-23           Soil      Man anese-54            <29.7       <1000          0-1000 ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Plutonium-238            934         864        519-1190       Acceptable ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Plutonium-239            982         969        633-1340       Acee table ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Potassium-40           11700.      10600      7740-14200       Acceptable ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Strontium-90          7490         8820      3360-13900       Acceptable ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Thorium-234           3760         3330       1050-6260 ERA      3rd I 2015 11/24/15 MRAD-23           Soil           Zinc-65            4610         3620       2880-4810 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uranium-234           2659         3360       2050-4310 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uranium-238           2831         3330       2060-4220 ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Uranium-Total          5490         6850       3720-9040 ERA      3rd I 2015 11/24/15 MRAD-23           Soil    Uranium-Total mass        8420         9990      5510-12600 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uranium-234           2970         3360       2050-4310 ERA      3rd I 2015 11/24/15 MRAD-23           Soil        Uraniuni-238          3010         3330       2060-4220 ERA      3rd I 2015 11/24/15 MRAD-23           Soil       Uranium-Total           6091        6850       3720-9040 ERA      3rd I 2015 11/24/15 MRAD-23           Soil    Uranium-Total mass        8990         9990      5510-12600 ERA      3rd I 2015 11/24/15 MRAD-23                   Uranium-Total mass         8470        9990      5510-12600 ERA      3rd I 2015 11/24/15 MRAD-23                          Am-241              1780        1590        972-2110 ERA      3rd I 2015 11/24/15 MRAD-23                       Cesium-134              652         748         481-972 ERA      3rd I 2015 11/24/15 MRAD-23                       Cesium-137             1140        1230        892-1710 ERA      3rd/2015   11/24/15 MRAD-23                         Cobalt-60            1870         1930      1330-2700 ERA      3rd I 2015 11/24/15 MRAD-23                        Curium-244            2910        3230       1580-5030 C-19

Donald C. Cook Nuclear Plant                                                                                            Annual Radiological Environmental Operating Report 2015
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                                                                 *:.Media       .',/,,;;Unit         , Ah.ilyte/ Nuclide Value / ;n *' , value  *   '; Range/ Ratio.  "' Evalu.ati6rff~1'.*.'
ERA       3rd/ 2015       11 /24/15    MRAD-23                    Veaetation            pCi/ka           Manaanese-54              <45.2            <300              0-300        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/ka           Plutonium-238             4720             3920          2340-5370        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/kg           Plutonium-239             2630             2390           1470-3290       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Veaetation            pCi/kq           Potassium-40              31200           31000         22400-43500       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Ver:ietation          pCi/kq            Strontium-90             7590             7160          4080-9490        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/kg            Uranium-234              4280             4010          2640-5150        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Ver:ietation          pCi/kq            Uranium-238               4620            3970          2650-5040        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Vegetation            pCi/kg           Uranium-Total              9155            8160          5530-10200       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Veqetation             UQ/kq      Uranium-Total(mass)            13900           11900           3540-6710       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Ver:ietation           UQ/kq       Uranium-Total(mass)           13100           11900          7970-15100       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                    Veaetation            pCi/kg               Zinc-65                1530            1540           1110-2160       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter        Americium-241               35.1            36.8           22.7-49.8       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Cesium-134                 315            349.0           222-433        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Cesiurn-137                598             613            461-805        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter           Cobalt-60                 509             521            403-651        Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter             lron-55                 546            595.0           184-1160       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter         Manqanese-54              <4.53             <50            0.00-50.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           uq/Filter          Plutonium-238              43.6             42.6           29.2-56.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter         Plutonium-239              63.6             63.8           46.2-83.4      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Strontium-90              37.1             45.7           22.3-68.5      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Uranium-234               38.4             43.0           26.7-64.8      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Uranium-238               39.3             42.7           27.6-59.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           PCi/Filter         Uranium-Total              80.1             87.7           48.'6-133      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           ug/Filter      Uranium-Total(mass)             118             128            81.9-180       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter             Zinc-65                 727             685             491-946       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter          Uranium-234               45.7             43.0           26.7-64.8      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           oCi/Filter          Uranium-238               43.4             42.7           27.6-59.0      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter         Uranium-Total              91.1             87.7           48.6-133       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           ug/Filter      Uranium-Total(mass)             130             128            81.9-180       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           uq/Filter      Uranium-Total(mass)             117             128            81.9-180       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           oCi/Filter          Gross Aloha                 98             77.3           25.9-120       Acceotable ERA       3rd/ 2015       11/24/15     MRAD-23                       Filter           pCi/Filter           Gross Beta               52.2             41.3           26.1-60.2      Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                pCi/L           Americium-241               114             113            76.1-152       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 pCi/L           Cesium-134                 702             759             557-872       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 oCi/L           Cesium-137                 622             623             529-747       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 pCi/L            Cobalt-60                 927             896            778-1050       Acceotable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 pCi/L              lron-55                 196             212             126-288       Acceptable ERA       3rd/ 2015       11/24/15     MRAD-23                      Water                 oCi/L          Manaanese-54              <6.14            <100            0.00-100       Acceptable C-20

Donald C. Cook Nuclear Plant                                                                                Annual Radiological Environmental Operating Report 2015
                              *~eport                                                                                                        :.*:    .              >:*.
PT      , :,: Quarter I  'Received                 ' *.
: ~;:~;;;;::  * ' :**,:<sample                                        GEL        *.Known * :;'.,* Acceptance.: ~i**>** ,.
Provider.:;. . Year        * ';li>~te :~*;    Sample Number* * * '''<<~"Media **                                     Value ,. J;  : value *** :;;;::;Range/ Ratio '**:*: .:  Evaluation  ,"b;.
* ERA             3rd I 2015    11/24/15     MRAD-23                     Water      pCi/L      Plutonium-238           117            140                104-174              Acceotable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Plutonium-239           88.5           114               88.5-144              Acceotable ERA             3rd/2015      11/24i15     MRAD-23                     Water      pCi/L       Strontium-90           505            544                354-719              Acceptable ERA             3rd I 2015    11/24/15     MRAD-23                     Water      pCi/L      Uranium-234             49.2           48.5             36.4-62.6              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-238            49.7           48.1             36.7-59.0              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Uranium-Total           98.9           98.9              72.7-128              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ug/L    Uranium-Total(mass)        148            144                115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L          Zinc-65             786            712                594-898              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-234            45.8           48.5             36.4-62.6              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-238            44.4           48.1             36.7-59.0              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Uranium-Total           92.8           98.9              72.7-128              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ua/L    Uranium-Total(mass)       135.0          144.0               115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-234            49.5           48.5             36.4-62.6              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Uranium-238            43.1           48.1             36.7-59.0              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L      Uranium-Total            95            98.9              72.7-128              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ug/L    Uranium-Total(mass)        129            144                115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      ug/L    Uranium-Total(mass)        135             144               115-174              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L       Gross Alpha           104.0            136              48.3-211              Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L        Gross Beta            61.6           53.7              30.7-79.6             Acceptable ERA             3rd/ 2015     11/24/15     MRAD-23                     Water      pCi/L          Tritium            20500          21500            14400-30700             Acceptable ERA             3rd/ 2015     11/23/15     RAD - 103                   Water      pCi/L       Strontium-89            42            35.7              26.7-42.5             Acceptable ERA             3rd/ 2015     11/23/15     RAD - 103                   Water      pCi/L       Strontium-90           26.9           31.1              22.7-36.1             Acceptable ERA             3rd/2015      11/23/15     RAD - 103                   Water      PCi/L       Strontium-89           41.8           35.7             26.7-42.5              Acceptable ERA             3rd/2015      11/23/15     RAD - 103                   Water      pCi/L       Strontium-90            22            31.1             22.7-36.1             Not Acceptable EZA              4th/2015     02/18/16     E11412                     Cartridge    pCi         lodine-131         7.73E+01      7.98E+01                 0.97               Acceptable EZA              4th/2015     02/18/16     E11413                       Milk      pCi/L       Strontium-89        9.41 E+01     8.68E+01                 1.08               Acceptable EZA              4th/2015     02/18/16     E11413                       Milk      pCi/L       Strontium-90        9.74E+OO      1.25E+01                 0.78               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L        lodine-131         1.01 E+02     9.12E+01                 1.11               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L        Cerium-141         1.36E+02       1.29E+02                1.06               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk    . pCi/L      Chromium-51          2.79E+02      2.81E+02                 0.99               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L       Cesium-134          1.45E+02       1.60E+02                0.91               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      pCi/L       Cesium-137          1.15E+02       1.15E+02                1.00               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      pCi/L         Cobalt-58         1.06E+02       1.10E+02                0.96               Acceptable EZA              4th/2015     02/18/16. E11414                       Milk      pCi/L      Manganese-54         1.53E+02       1.45E+02                1.06               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      pCi/L          lron-59          1.19E+02       1.08E+02                1.10               Acceptable EZA              4th/2015     02/18/16     E11414                       Milk      PCi/L          Zinc-65          2.69E+02      2.48E+02                 1.08               Acceptable EZA              4th/2015     02/18/16     E11414                       Mi~       pCi/L         Cobalt-60         2.12E+02       2.13E+02                0.99               Acceptable C-21

Donald C. Cook Nuclear Plant                                                                                              Annual Radiological Environme_ntal Operating Report 2015
                                             ~ :;                          I. * ;~.;                                         ~: '                                                      ..
                                                                                                                                           .N~ ~i:
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                                         *. ;~~:<:~>~; "  ) ~)sample                                                                                                                  :.*>                  ,\{~,'-~:
PT.~J**; *,;Quarter I Provider: .*''*Year Received
                         . : e"oate
* sailipie*Number  * :~:*:'. Media
                                                                               ''"&deg;">\ .
                                                                             '".      Unit . *   * *A!J~iY1te*;.N-~clide\:j;~ri. GEL*
Value***
K!19wn' i, !cr./Acceptance*
value**  :Xf:.* *Range/ Ratio**:~:.:.* '.:..         ,
Evaluation.***
EZA            4th/2015     02/18/16  E11415                         Water            PCi/L                 lodine-131            1.05E+02         9.26E+01              1.13                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                Cerium-141             1.27E+02         1.12E+02              1.14                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L               Chromium-51             2.60E+02         2.44E+02              1.07                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                Cesium-134             1.25E+02         1.39E+02              0.90                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                Cesium-137             1.12E+02         9.95E+01              1.13                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                  Cobalt-58            9.73E+01         9.56E+01              1.02                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L             Manaanese-54              1.41 E+02        1.26E+02              1.12                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                    lron-59            1.11 E+02        9.34E+01              1.19                     Acceptable EZA            4th/2015'    02/18/16  E11415                         Water            pCi/L                   Zinc-65             2.43E+02         2.15E+02              1.13                     Acceptable EZA            4th/2015     02/18/16  E11415                         Water            pCi/L                  Cobalt-60            1.92E+02         1.85E+02              1.04                     Acceptable C-22

Donald C. Cook Nuclear Plant                                                                              Annual Radiological Environmental Operating Report 2015 Table C-2 2015 Eckert & Ziegler Analytics Performance Evaluation Results
                  ,- -~- ,- '                                           ,,
                                                               'lo Re~o'rf          Sample'   Sample ,                       ,*                ;~    GEL           '                   Acceptari~e,,,    '           ''
Date:*,,,.    " Number     Media ;~;,. . Unit    . , .\4nal.yte 1 Nuclidef:     Value   '*:.; '*~nown val&#xb5;e';' '
* Range/ Rcitic;>>*   Evaluation!'.::*:
03/10/15        E11057      CartridQe       pCi               lodine-131        8.70E+01           9.89E+01              0.88            Acceptable 03/10/15        E11058        Milk        pCi/L              Strontium-89       9.09E+01           9.57E+01              0.95            Acceptable 03/10/15        E11058        Milk        pCi/L              Strontium-90       1.39E+01           1.56E+01              0.89            Acceptable 03/10/15        E11059        Milk        pCi/L               lodine-131        9.34E+01           9.51E+01              0.98            Acceptable 03/10/15        E11059        Milk         PCi/L              Cerium-141        2.33E+02           2.19E+02              1.06            Acceptable 03/10/15        E11059        Milk        PCi/L                   Cr-51         4.22E+02           4.06E+02              1.04            Acceptable 03/10/15        E11059        Milk        pCi/L               Cesium-134        1.50E+02           1.64E+02              0.91            Acceptable 03/10/15        E11059        Milk        PCi/L               Cesium-137        2.16E+02           1.98E+02              1.09            Acceptable 03/10/15        E11059        Milk        pCi/L                 Cobalt-58       1.32E+02           1.30E+02              1.02            Acceotable 03/10/15        E11059        Milk        pCi/L                   Mn-54         2.39E+02           2.25E+02              1.06            Acceptable 03/10/15        E11059        Milk        pCi/L                  lron-59        1.80E+02           1.75E+02              1.03            Acceptable 03/10/15        E11059        Milk        pCi/L                  Zinc-65        3.32E+02           2.97E+02              1.12            Acceotable 03/10/15        E11059        Milk         pCi/L                Cobalt-60       2.49E+02           2.35E+02              1.06            Acceptable 03/10/15        E11060       Water         pCi/L               lodine-131       1.11 E+02          9.53E+01              1.16            Acceptable 03/10/15        E11060       Water        pCi/L               Cerium-141        3.02E+02           2.84E+02              1.06            Acceptable 03/10/15        E11060       Water        pCi/L                   Cr-51         5.43E+02           5.26E+02              1.03            Acceptable 03/10/15        E11060       Water        PCi/L               Cesium-134        1.90E+02           2.13E+02              0.89            Acceptable 03/10/15        E11060       Water        PCi/L               Cesium-137        2.58E+02           2.57E+02              1.01            Acceptable 03/10/15        E11060       Water        pCi/L                 Cobalt-58       1.73E+02           1.68E+02              1.03            Acceotable 03/10/15        E11060       Water         oCi/L                  Mn-54         3.06E+02           2.92E+02              1.05            Acceptable 03/10/15        E11060       Water         oCi/L                 lron-59        2.51E+02           2.26E+02              1.11            Acceptable 03/10/15        E11060       Water         pCi/L                 Zinc-65        4.20E+02           3.84E+02              1.09            Acceptable 03/10/15        E11060       Water         pCi/L                Cobalt-60       3.24E+02           3.04E+02              1.06            Acceptable 05/21/15        E11174      Cartridcie      pCi               lodine-131        8.01E+01           7.74E+01              1.03            Acceptable 05/21/15        E11175        Milk        pCi/L              Strontium-89       9.75E+01           1.05E+02              0.93            Acceptable 05/21/15        E11175        Milk        pCi/L              Strontium-90       1.1 OE+01          1.44E+01              0.77            Acceptable 05/21/15        E11176        Milk        PCi/L                lodine-131       9.60E+01           9.75E+01              0.98            Acceptable 05/21/15        E11176       *Milk        pCi/L               Cerium-141        2.13E+02           2.11E+02              1.01            Acceptable C-23

Donald C. Cook Nuclear Plant                                                                                           Annual Radiological Environmental Operating Report 2015
                 ."':'/'<J
                ~t~~1~l~~
05/21/15       E11176                 Milk
                           .. :' ~~6~ft;it; . .':. s~:~~~~L:, lf..
:unit pCi/L
                                                                           .  .Ii;~~::::~,. .. . . :_ .?~
Chromium-51
:* 1,.J)!Analyte.J Nuchde,\i;, r~ :v~~~e)J'.~ ;?Kntiv:in value.~i: : .* Range/ Rati9'f'1::'
5.88E+02
::'~, ~*:
5.55E+02                       1.06
                                                                                                                                                                       . ": -~
                                                                                                                                        -. :.";\;j~ -" ; * '. Acc,epta11c~}! .
                                                                                                                                                                               .,,c*
                                                                                                                                                                                               ,'c, Acceptable
:E~a1u~fiorfi;~::;
* 05/21/15       E11176                 Milk           pCi/L                Cesium-134          1.71E+02              1.91E+02                        0.9                Acceptable 05/21/15       E11176                 Milk           pCi/L                Cesium-137          2.59E+02              2.53E+02                       1.02                Acceptable 05/21/15       E11176                 Milk           PCi/L                  Cobalt-58         2.64E+02              2.72E+02                       0.97                Acceptable 05/21/15       E11176                 Milk           pCi/L             Manganese-54           2.43E+02              2.40E+02                       1.01                Acceptable 05/21/15       E11176                 Milk           pCi/L                    lron-59         3.14E+02              2.95E+02                       1.06                Acceptable 05/21/15       E11176                 Milk           pCi/L                    Zinc-65         4.67E+02              4.53E+02                       1.03                Acceptable 05/21/15       E11176                 Milk           PCi/L                  Cobalt-60         4.81E+02              4.98E+02                       0.97                Acceptable 05/21/15       E11177                Water           pCi/L                 lodine-131         9.92E+01              9.67E+01                       1.03                Acceptable 05/21/15       E11177                Water           pCi/L                Cerium-141          1.40E+02              1.39E+02                       1.01                Acceptable 05/21/15       E11177                Water           pCi/L               Chromium-51          3.95E+02              3.66E+02                       1.08                Acceptable 05/21/15       E11177                Water           pCi/L                Cesium-134          1.12E+02              1.26E+02                       0.89                Acceptable 05/21/15       E11177                Water           pCi/L                Cesium-137          1.69E+02              1.67E+02                       1.01                Acceptable 05/21/15       E11177                Water            pCi/L                 Cobalt-58         1.78E+02              1.80E+02                       0.99                Acceptable 05/21/15       E11177                Water            pCi/L             Manganese-54          1.66E+02              1.59E+02                       1.05                Acceptable 05/21/15       E11177                Water            pCi/L                   lron-59         2.14E+02              1.95E+02                       1.10                Acceptable 05/21/15       E11177                Water            pCi/L                   Zinc-65
* 3.25E+02              2.99E+02                       1.09                Acceptable 05/21/15       E11177                Water            pCi/L                  Cobalt-60        3.23E+02              3.28E+02                       0.98                Acceptable 08/06/15       E11216              Cartridoe            pCi                lodine-131         8.92E+01              8.01 E+01                      1.11                Acceptable 08/06/15       E11217                 Milk            pCi/L              Strontium-89         9.13E+01              8.26E+01                       1.11                Acceptable 08/06/15       E11217                 Milk            pCi/L              Strontium-90         1.16E+01              1.27E+01                       0.91                Acceptable 08/06/15       E11218                 Milk            pCi/L                lodine-131         1.05E+02              9.59E+01                       1.10                Acceptable 08/06/15       E11218                 Milk            pCi/L               Ceriumc141         -2.70E+OO              Not Pres.                        -                 Acceptable 08/06/15       E11218                 Milk            pCi/L              Chromium-51          2.70E+02              2.76E+02                       0.98                Acceptable 08/06/15       E11218                 Milk            pCi/L               Cesium-134          1.46E+02              1.63E+02                       0.90                Acceptable 08/06/15       E11218                 Milk            pCi/L               Cesium-137          1.31 E+02             1.25E+02                       1.05                Acceptable 08/06/15       E11218                 Milk            pCi/L                  Cobalt-58        7.18E+01              6.84E+01                       1.05                Acceptable 08/06/15       E11218                 Milk            pCi/L             Manganese-54          1.02E+02              1.01 E+02                      1.01                Acceptable 08/06/15       E11218                 Milk            pCi/L                   lron-59         1.51E+02              1.51 E+02                      1.00                Acceptable 08/06/15       E11218                 Milk            pCi/L                   Zinc-65         2.63E+02              2.48E+02                       1.06                Acceptable 08/06/15       E11218                 Milk            pCi/L                  Cobalt-60         1.96E+02             1.93E+02                       1.02                Acceptable 08/06/15       E11219                Water            pCi/L                 lodine-131        9.53E+01              9.34E+01                       1.02                Acceptable 08/06/15       E11219                Water            pCi/L               Cerium-141           1.24E-01             Not Pres.                        -                 Acceptable C-24

Donald C. Cook Nuclear Plant                                                                                                                              Annual Radiological Environmental Operating Report 2015 I-'~: : ..:::~ii!&sect;i,~:::1<* ,~~~!~~~I~;*\ .
                                        . um er,* .,., i'.'C**
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                                                               '\
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                                                                           *:{*:*unit*"*:*
                                                                           ~;' '"*'   -
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                                                                                                       ~~li~~it*te I Ntlcua :';;~ttili:}:      : *d~L .:~~ ~g:~_< ' *...." '{~l~'J~*)~ccepta~~{kJA.*
                                                                                                                                     . :>*:'.' .,:v~i~e::
                                                                                                                                                                                                        ,;, **. :*;   <~~~;ir;~*.:
                                                                                                                                                            . :51 Known -valu ",;;,.~RailQe/RatioiL.:.~/ ''*-".; Evaluation's.''.,,'<
08/06/15        E11219                       Water           pCi/L                     Chromium-51                      3.47E+02              2.93E+02             1.18                     Acceptable 08/06/15        E11219                       Water           PCi/L                      Cesium-134                      1.63E+02              1.73E+02             0.94                     Acceptable 08/06/15        E11219                       Water
* pCi/L                        Cesium-137                      1.34E+02              1.33E+02             1.01                     Acceptable 08/06/15        E11219                       Water           pCi/L                        Cobalt-58                     7.21E+01              7.26E+01             0.99                     Acceotable 08/06/15        E11219                       Water           pCi/L                    Manganese-54                      1.17E+02              1.07E+02             1.10                     Acceptable 08/06/15        E11219                       Water           pCi/L                         lron-59                      1.76E+02              1.61E+02             1.09                     Acceptable 08/06/15        E11219                       Water           oCi/L                         Zinc-65                      2.85E+02              2.64E+02              1.08                    Acceptable 08/06/15        E11219                       Water           PCi/L                        Cobalt-60                     2.10E+02              2.05E+02              1.03                    Acceptable 11/15/15        E11310                   Cartridae             oCi                       lodine-131                     8.21E+01              8.15E+01              1.01                    Acceptable 11/15/15        E11311                        Milk           oCi/L                     Strontium-89                     8.79E+01              9.91E+01              0.89                    Acceptable 11/15/15        E11311                        Milk           oCi/L                     Strontium-90
* 1.07E+01              1.64E+01              0.65                    Acceptable 11/15/15        E11312                        Milk           pCi/L                       lodine-131                     9.61E+01              9.99E+01              0.96                    Acceptable 11/15/15        E11312                        Milk           pCi/L                      Cerium-141                      2.15E+02              2.13E+02              1.01                    Acceptable 11/15/15        E11312                        Milk           pCi/L                     Chromium-51                      5.82E+02              5.38E+02              1.08                    Acceptable 11/15/15        E11312                        Milk           pCi/L                      Cesium-134                      1.89E+02              2.12E+02              0.89                    Acceptable 11/15/15        E11312                        Milk           oCi/L                      Cesium-137                      2.43E+02              2.55E+02              0.95                    Acceptable 11/15/15        E11312                        Milk           pCi/L                        Cobalt-58                     2.50E+02              2.63E+02              0.95                    Acceptable 11/15/15        E11312                        Milk           pCi/L                    Manaanese-54                      3.02E+02              2.90E+02              1.04                    Acceptable 11/15/15        E11312                        Milk           pCi/L                         lron-59                      2.30E+02              2.26E+02              1.02                    Acceptable 11/15/15        E11312                        Milk           pCi/L                         Zinc-65                      3.62E+02              3.53E+02              1.02                    Acceptable 11/15/15        E11312                        Milk           pCi/L                        Cobalt-60                     3.42E+02              3.30E+02              1.04                    Acceptable 11/15/15        E11313                       Water           pCi/L                       lodine-131                     1.00E+02              9.67E+01              1.03                    Acceptable 11/15/15        E11313                       Water           pCi/L                      Cerium-141                      2.05E+02               1.99E+02             1.03                    Acceptable 11/15/15        E11313                       Water           pCi/L                     Chromium-51                      5.42E+02              5.02E+02              1.08                    Acceptable 11/15/15         E11313                      Water           pCi/L                      Cesium-134                       1.75E+02              1.98E+02             0.89                    Acceptable 11/15/15         E11313                      Water            oCi/L                     Cesium-137                      2.40E+02              2.38E+02              1.01                    Acceptable 11/15/15         E11313                      Water            oCi/L                       Cobalt-58                     2.45E+02              2.46E+02              1.00                    Acceptable 11/15/15         E113fa                      Water            pCi/L                   Manaanese-54                      2.88E+02              2.71E+02              1.06                    Acceptable 11/15/15        E11313                      Water           PCi/L                         lron-59                      2.31E+02              2.11E+02              1.10                    Acceptable 11/15/15        E11313                      Water            pCi/L                        Zinc-65                       3.75E+02              3.30E+02             1.14                    Acceptable 11/15/15        E1131'3                     Water            pCi/L                       Cobalt-60                      3.11E+02              3.08E+02             1.01                    Acceptable 02/18/16         E11412                   Cartridge            pCi                       lodine-131                      7.73E+01              7.98E+01             0.97                    Acceotable 02/18/16         E11413                       Milk            oCi/L                     Strontium-89                     9.41 E+01             8.61E+01             1.08                    Acceptable C-25

Donald C. Cook Nuclear Plant                                                                                                     Annual Radiological Environmental Operating Report 2015
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02/18/16       E11413                    Milk           pCi/L             Strontium-90                 9.74E+OO          1.25E+01              0.78               Acceptable 02/18/16       E11414                    Milk           pCi/L              lodine-131                  1.01 E+02         9.12E+01              1.11               Acceptable 02/18/16       E11414                    Milk           pCi/L             Cerium-141                   1.36E+02          1.29E+02              1.06               Acceptable 02/18/16       E11414                    Milk           pCi/L            Chromium-51                   2.79E+02          2.81E+02              0.99               Acceptable 02/18/16       E11414                    Milk           pCi/L             cesium-134                   1.45E+02          1.60E+02              0.91               Acceptable 02/18/16       E11414                    Milk           pCi/L             Cesium-137                   1.15E+02          1.15E+02              1.00               Acceptable 02/18/16       E11414                    Milk           pCi/L               Cobalt-58                  1.06E+02          1.10E+02              0.96               Acceptable 02/18/16      E11414                    Milk           pCi/L            Manganese-54                  1.53E+02          1.45E+02              1.06             , Acceptable 02/18/16      E11414                    Milk           pCi/L                lron-59                   1.19E+02          1.08E+02               1.10              Acceptable 02/18/16       E11414                    Milk           PCi/L                Zinc-65                   2.69E+02          2.48E+02              1.08               Acceptable 02/18/16      E11414                    Milk           pCi/L               Cobalt-60                  2.12E+02          2.13E+02              0.99               Acceptable 02/18/16      E11415                  Water            pCi/L              lodine-131                  1.05E+02          9.26E+01              1.13               Acceptable 02/18/16      E11415                  Water            pCi/L             Cerium-141                   1.27E+02          1.12E+02              1.14               Acceptable 02/18/16      E11415                  Water            pCi/L            Chromium-51                   2.60E+02          2.44E+02               1:07              Acceptable 02/18/16      E11415                  Water            pCi/L             Cesium-134                   1.25E+02          1.39E+02              0.90               Acceptable 02/18/16      E11415                  Water            pCi/L             Cesium-137                   1.12E+02          9.95E+01               1.13              Acceptable 02/18/16      E11415                  Water            pCi/L               Cobalt-58                  9.73E+01          9.56E+01               1.02              Acceptable 02/18/16      E11415                   Water           pCi/L            Manganese-54                   1.41E+02         1.26E+02               1.12              Acceptable 02/18/16      E11415                  Water            pCi/L                lron-59                   1.11E+02          9.34E+01               1.19              Acceptable 02/18/16      E11415                  Water            pCi/L                Zinc-65                   2.43E+02          2.15E+02               1.13              Acceptable 02/18/16       E11415                  Water           pCi/L               Cobalt-60                   1.92E+02         1.85E+02               1.04              Acceptable C-26

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Table C-3 REMP Intra-Laboratory Data Summary: Bias and Precision by Matrix Bias Criteria            Precision Criteria C+ I - 250/ol                {Note 1}
WITHIN          OUTSIDE    WITHIN          OUTSIDE REMP 2015                    CRITERIA        CRITERIA   CRITERIA         CRITERIA MILK Gas Flow Sr 2nd count                            41               0         44                0 Gas Flow Total Strontium                         25               0         25                0 Gamma Soec Liquid RAD A- 013 with Ba La          59               0        117                0 SOLID Gamma Soec Sol id RAD A-013                      22               0         28                0 LSC Nickel 63                                     3               0          3                0 Gas Flow Sr 2nd count                             6               0          6                0 Gas Flow Total Strontium                          4               0          4                0 Gamma Spec Sol id RAD A- 0 13 with Ba, La         5               0          9                0 Gamma Spec Solid RAD A- 013 with Iod ine          6               0          6                0 FILTER Gas Flow Sr 2nd Count                             5               0          5                0 Gross A & B                                     402               0       402                 0 Gamma Spec Filter                               42                0         51                0 LIOUID Aloha Soec Uranium                               10               0         14                0 Tritium                                          212               0        213                0 LSC Iron - 55                                    12               0         11                0 LSC Nickel 63                                    14               0         13                0 Gamma Spec Liquid RAD A-013                       5               0          5                0 Alpha Spec Am243                                 4                0          4                0 Gamma Iodine-131                                 27               0         27                0 Alpha Spec Plutonium                             18               0         18                0 Gas Flow Sr 2nd count                            10               0         10                0 Alpha Spec Am241 Curium                          19               0         19                0 Gas Flow Total Strontium                         29               0         26                0 Gross Aloha Non Vol Beta                        35                0         39               0 Gamma Soec Liquid RAD A-013 with Ba La          65                0        158               0 Gamma Soec Liquid RAD A-013 with Iod ine         31                0        32                0 TISSUE Gamma Spec Solid RAD A-013                       35                0        36                0 Gas Flow Sr 2nd count                             12               0         12               0 Gas Flow Total Strontium                          11               0         11               0 Gamma Spec Solid RAD A- 013 with Iodine           12               0         12               0 SEA WATER LSC Iron-55                                      7                0         6                0 C-27

Donald C. Cook Nuclear Plant                    Annual Radiological Environmental Operating Report 2015 Bias Criteria                 Precision Criteria C+ I - 250/ol                      (Note 1)
WITHIN           OUTSIDE         WITHIN            OUTSIDE REMP 2015                         CRITERIA         CRITERIA        CRITERIA          CRITERIA LSC Nickel 63                                               7               0               6                 0 Gas Flow Total Strontium                                   4                0               4                 0 Gross Aloha Non Vol Beta                                    3               0               3                 0 Gamma Spec Liquid RAD A-013 with Iod ine                   8                0               8                 0 VEGETATION Gas Flow Sr 2nd count                                      10               0               10                0 Gamma Spec Solid RAD A-013 with Iodine                    79                0              86                 0 AIR CHARCOAL Gamma Iodine 131 RAD A-013                                529               0              577                0 Carbon - 14 (Ascarite/Soda Lime Filter per Liter)                                                    35                0              35                 0 DRINKING WATER Tritium                                                    51               0               50                0 LSC Iron- 55                                               14               0               16                0 LSC Nickel 63                                              14               0               16                0 Gamma Iodine-131                                          31                0              32                 0 Gas Flow Sr 2nd count                                      15               0               15                0 Gas Flow Total Strontium                                   17               0               18                0 Gross Alpha Non Vol Beta                                  76                0              73                 0 Gamma Spec Liquid RAD A-013 w ith Ba La                   32                0              85                 0 Total                                       2113                             2400 Note 1: The RPO must be 20 percent or less, if both samples are greater than 5 times the MDC . If both results are less than 5 times MDC , then the RPO must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC , then the RPO can be calculated using the MDC for the result of the one below the MDC . The RPO must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC , the RPO must be less than or equal to 20%. If both resu lts are below MDC , then the limits on % RPO are not aoolicable.
C-28

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Table C-4 All Radiological Intra-Laboratory Data Summary:
Bias and Precision by Matrix Bias Criteria ( + I - 25% Precision Criteria (Note 1)
WITHIN          OUTSIDE    WITHIN         OUTSIDE Total Radiological 2015                 CRITERIA        CRITERIA   CRITERIA        CRITERIA MILK Gamma Soec Liquid RAD A-013                                  6               0          6              0 Gamma Iodine-129                                             1               0          2              0 Gamma Iodine- 131                                           25               0         119             0 Gas Flow Sr 2nd count                                       41               0         45              0 Gas Flow Strontium 90                                        6               0          6              0 Gas Flow Total Strontium                                    25               0         25              0 Gamma Soec Liquid RAD A- 013 with Ba La                     59               0         117             0 Gamma Soec Liqu id RAD A-013 with Iod ine                    6               0          6              0 SOLID Gamma Percent Leach                                          2               0          0              0 Gas Flow Radium 228                                         50               0         52              0 Tritium                                                    268               0        301              0 Carbon - 14                                                172               0        229              0 LSC Iron - 55                                              143               0         155             0 Aloha Spec Polonium Solid                                   18               0         21              0 Gamma Nickel 59 RAD A-022                                  125               0         138             0 LSC Chlorine-36 in Solids                                    3               0          3              0 Gamma Soec Ra226 RAD A-013                                  40               0         48              0 Gamma Soec Solid RAD A-013                                 815               0        1016             0 LSC Nickel 63                                              184               0         189             0 LSC Plutonium                                              241               0        250              0 Technetium -99                                             328               0        360              0 ICP-MS Technet ium -99 in Soil                              22               0         17              0 LSC Selenium 79                                              9               0         11              0 Total Activity,                                              6               0          6              0 Tritium                                                      3               0          3              0 Aloha Soec Am243                                            40               0         55              0 Gamma Iodine- 129                                          145               0        158              0 Gas Flow Lead 210                                            4               0          3              0 Total Uranium KPA                                            5               0          6              0 Aloha Spec Uran ium                                        326               0        448              0 LSC Prometh ium 147                                          6               0          7              0 LSC Rapid Strontium 89 and 90                               74               0         84              0 Aloha Soec Thorium                                         232               0        308              0 Gas Flow Rad ium 228                                         4               0         21              0 ICP-MS Uranium - 233 234 in Sol id                          46               0         45              0 Aloha Soec Plutonium                                       337               0        357              0 ICP-MS Technetium-99 Prep in Soil                           27               0         17              0 Alpha Spec Neptunium                                       277               0        288              0 Alpha Spec Plutonium                                       163               0        190              0 Alpha Spec Rad iu m 226                                     12               0         12              0 Gamma Spec Solid with Ra 226, Ra228                          3               0          3              0 C-29

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + / - 250/o Precision Criteria (Note 1)
WITHIN          OUTSIDE      WITHIN         OUTSIDE Total Radiological 2015                 CRITERIA        CRITERIA     CRITERIA        CRITERIA Gas Flow Sr 2nd count                                       33               0           39              0 Gas Flow Strontium 90                                      270               0          284              0 Gas Flow Total Radium                                        0               0            1              0 Lucas Cell Radium 226                                       90               0           119             0 Total Activity Screen                                       21               0           25              0 Aloha Soec Am241 Curium                                    355               0          390              0 Aloha Soec Total Uranium                                     2               0            5              0 Gas Flow Total Strontiu m                                   56               0           59              0 ICP-MS Uranium-233, 234 Prep in Solid                       43               0           43              0 ICP- MS Uranium-235, 236, 238 in Solid                      56               0           48              0 Gamma Soec Solid RAD A-013 with Ba La                        5               0            9              0 Gamma Spec Solid RAD A-013 with Iodine                       6               0            6              0 Oroanicallv Bound Tritium                                    4               0            4              0 GFC Chlorine-36 in Solids                                    2               0            2              0 Gamma Spec Solid RAD A-013 (pCi/Sample)                      0               0            1              0 Tritium                                                     13               0           13              0 Aloha Soec Am241 (oCi/Samole)                                2               0            1              0 ICP- MS Uranium - 234 235 236 238 in Solid                  55               0           44              0 ICP- MS Uranium-235, 236, 238 Prep in Solid                 43               0           43              0 ICP-MS U-234, 235, 236 238 Prep per sample                   2               0            1              0 Alpha Spec Uranium                                           2               0            1              0 Gross Alpha/Beta                                           297               0          390              0 Alpha Spec Plutonium                                         1               0            1              0 Gas Flow Strontium 90                                        2               0            1              0 Gross Aloha/Beta (Ame ricium Calibration) Solid              3               0            5              0 ICP- MS Uranium-234 235 236 238 Prep in Solid               27               0           23              0 Lucas Cell Rad ium 226 by DOE HASL 300 Ra-04 Solid           3               0            3              0 FILTER Aloha Spec Uranium                                          11               0           19              0 Aloha Soec Polonium                                          0               0            8              0 Gamma 1- 131 filter                                          5               0            5              0 LSC Pluton ium Filter                                      127               0          157              0 Tritium                                                    109               0          185              0 Carbon - 14                                                 59               0          104              0 Nickel - 63                                                 0                0           17              0 LSC Iron - 55                                              118               0          126              0 Gamma Nickel 59 RAD A- 022                                 94                0          102              0 Gamma Soec Sol id RAD A-013                                  2               0            2              0 LSC Nickel 63                                              111               0          118              0 Technetium-99                                              83                0          117              0 Gamma Spec Filter RAD A- 013                               229               0          260              0 LSC Selenium 79                                             0                0            2              0 Alphaspec Np Filter per Liter                               12               0           20              0 Aloha soec Pu Filter per Liter                             29                0           37              0 Gamma Iodine-125                                            5                0            0              0 C-30

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 250/o Precision Criteria (Note 1 l WITHIN          OUTSIDE      WITHIN         OUTSIDE Total Radiological 2015               CRITERIA        CRITERIA     CRITERIA        CRITERIA Gamma Iodine-129                                          61               0           96              0 Alpha Spec Am243                                          18               0            23             0 Gas Flow Lead 210                                          0               0            s              0 LSC Plutonium Filter oer Liter                             9               0            14             0 Total Uranium KPA                                          9               0            16             0 Aloha Soec Uranium                                        SS               0           141             0 LSC Promethium 147                                         s               0            s              0 LSC Rapid Strontium 89 and 90                            112               0           137             0 Alpha Spec Thorium                                        37               0           48              0 Alpha Spec Plutonium                                      90               0           127             0 Aloha Soec Neotunium                                     102               0           113             0 Aloha Soec Plutonium                                     106               0           129             0 Alpha Spec Polonium,(Filter/Liter)                         0               0            9              0 Alpha Spec Radium 226                                      0               0            3              0 Alpha/Beta (Americium Calibration)                         4               0            8              0 Gas Flow Sr 2nd Count                                     63               0           78              0 Gas Flow Strontium 90                                     72               0           87              0 Lucas Cell Radium-226                                      3               0            3              0 Aloha Soec Am241Curium                                   134               0           166             0 Gas Flow Total Strontium                                   s               0            7              0 ICP-MS Uranium-23S 236 238 in Filter                       0               0            3              0 Total Activity in Filter                                   s               0            s              0 Alphaspec Am241 Curium Filter per Liter                   20               0           24              0 Tritium                                                   87               0           89              0 Gamma Spec Filter RAD A- 013 Direct Count                  8               0            8              0 Carbon-14                                                 11               0           11              0 GFC Chlorine-36 in Filters PL                              4               0            4              0 Direct Count-Gross Alpha/Beta                             69               0            0              0 Gross Alpha/Beta                                          66               0           7S              0 ICP-MS Uranium-234, 23S 236, 238 in Filter                 0               0           10              0 ICP-MS Uranium-23S 236 238 Prep in Filter                  0               0            3              0 Alpha Spec U                                              19               0           42              0 Gross A & B                                              461               0          4S6              0 LSC Iron-SS                                                3               0           13              0 Technetium-99                                             11               0           18              0 Gas Flow Sr-90                                            10               0           16              0 LSC Nickel 63                                             13               0           20              0 Gas Flow Pb - 210                                          6               0           20              0 Gas Flow Ra - 228                                          4               0           13              0 Gamma Iodine 129                                           7               0            7              0 ICP-MS Uranium-234 23S 236, 238 Prep in Filter             0               0            s              0 Gamma Spec Filter                                        102               0          132              0 Lucas Cell Ra -2 26                                       11               0           21              0 Total Uranium KPA                                          2               0            4              0 C-31

Donald C. Cook Nuclear Plant   Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 25% Precision Criteria (Note 1 l WITHIN          OUTSIDE    WITHIN         OUTSIDE Total Radiological 2015         CRITERIA        CRITERIA   CRITERIA        CRITERIA Alpha Spec Tho rium                                   15              0         22              0 LIQUID Aloha Soec Uran ium                                 521               0        688              0 Aloha Soec Polon ium                                   1              0          2              0 Electrolytic Tritium                                 21               0         36              0 Tritium                                             1292              0        1344             0 Ca rbon - 14                                         163              0         191             0 Plutonium                                            65               0         79              0 Chlorine-36 in Liquids                                3               0          3              0 Iodine- 131                                           2               0          3              0 LSC Iron-55                                         225               0        285              0 Gamma Nickel 59 RAD A-022                            26               0         30              0 Gamma Iod ine 131 RAD A-013                           1               0          2              0 Gamma Spec Solid RAD A-013                            2               0          2              0 LSC Nickel 63                                       247               0        285              0 LSC Radon 222                                        15               0         16              0 Technetium -99                                      619               0        525              0 Gamma Soec Liqu id RAD A- 013                       913               0        936              0 Aloha Spec Total U RAD A-011                         66               0         65              0 LSC Selenium 79                                       9               0          9              0 Total Activity                                        3               0          3              0 Alpha Spec Am243                                     25               0         28              0 Gamma Iod ine-129                                   118               0        135              0 Gamma Iodine- 131                                    27               0         27              0 ICP-MS Technetium-99 in Water                        25               0         26              0 Gas Flow Lead 210                                    22               0         18              0 Total Uranium KPA                                   125               0        274              0 LSC Promethium 147                                    9               0          9              0 LSC Raoid Strontium 89 and 90                        16               0         18              0 Alpha Spec Polonium                                   2               0          2              0 Alpha Spec Thorium                                  225               0        254              0 Gas Flow Radium 228                                 274               0        317              0 Gas Flow Radium 228                                  42               0         43              0 Aloha Soec Pluton ium                               393               0        512              0 LSC Sulfur 35                                         5               0          5              0 Alpha Spec Neptun ium                               185               0        216              0 Alpha Spec Plutonium                                 41               0         60              0 Alpha Spec Radium 226                                30               0         27              0 Gas Flow Sr 2nd count                               218               0        233              0 Gas Flow Strontium 90                               516               0        585              0 Gas Flow Total Radium                                80               0        109              0 ICP-MS Technetium-99 Prep in Water                   26               0         27              0 ICP-MS Uranium-233 234 in Liquid                      5               0         13              0 LSC Calcium 45                                        5               0          5              0 Luca s Cell Radium 226                              380               0        404              0 Lu cas Cell Rad ium -226                             14               0         14              0 Total Activity Screen                                 6               0         11              0 C-32

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 25% Precision Criteria (Note 1 l WITHIN          OUTSIDE    WITHIN         OUTSIDE Total Radiological 2015                  CRITERIA        CRITERIA   CRITERIA        CRITERIA Chlorine - 36 in Liquids                                       11              0          14             0 Alpha Spec Am241 Curium                                      337               0        452              0 Gas Flow Total Strontium                                      138              0         141             0 Gross Aloha Non Vol Beta                                     1154              0        1379             0 LSC Phosphorus-32                                              3               0          3              0 ICP-MS Uran ium-233 234 Preo in Liauid                         6               0          14             0 Tritium in Drinkinq Wate r by EPA 906 .0                      13               0          17             0 Gamma Spec Liquid RAD A-013 with Ba, La                       65               0         158             0 Gamma Spec Liquid RAD A-013 with Iodine                      144               0         138             0 Gas Flow Strontium 89 & 90                                     4               0          1              0 ICP- MS Uran ium-235 236 238 in Liau id                       10               0         13              0 Gas Flow Total Aloha Radium                                    6               0          4              0 Gross Aloha Co-precipitation                                   4               0         24              0 ICP- MS Uranium - 23 5 23 6 238 Pre p in Liquid                6               0         14              0 ICP-MS Uranium-234 235 236, 238 in Liqu id                    90               0         79              0 Gross Alpha Beta (Americium Calibration) Liquid               31               0         51              0 ICP-MS Uranium - 234, 235, 236, 238 Preo in Liauid            57               0         55              0 Aloha/Beta (Americium Ca li bration) Drin kina Water          24               0         20              0 TISSUE Carbon-14                                                      4               0          4              0 Gamma Spec Solid RAD A-013                                    77               0         87              0 Tritium                                                        1               0          1              0 Gas Flow Lead 210                                              1               0          1              0 Alpha Spec Uranium                                             5               0         11              0 Aloha Spec Thorium                                             1               0          1              0 Aloha Soec Plutonium                                           3               0          4              0 Gas Flow Sr 2nd count                                         12               0         12              0 Gas Flow Strontium 90                                         21               0         19              0 Gas Flow Total Strontium                                      11               0         11              0 Gamma Spec Sol id RAD A- 013 wi th Iod ine                    12               0         12              0 Gross Alpha/Beta                                               4               0          7              0 SEA WATER LSC Iron-55                                                    7               0          6              0 LSC Nickel 63                                                  7               0          6              0 Gas Flow Total Strontium                                       4               0          4              0 Gross Alpha Non Vol Beta                                       3               0          3              0 Gamma Spec Liquid RAD A-013 with Iodine                        8               0          8              0 VEGETATION Carbon - 14                                                    5               0          6              0 Gamm a Nickel 59 RAD A- 022                                    1               0          1              0 Gamma Soec Solid RAD A- 013                                   30               0         31              0 LSC Nickel 63                                                  1               0          1              0 C-33

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 250/o Precision Criteria (Note 1 l WITHIN          OUTSIDE      WITHIN         OUTSIDE Total Radiological 2015                   CRITERIA        CRITERIA     CRITERIA        CRITERIA LSC Plutonium                                                1               0            1              0 Technetium-99                                                3               0            3              0 Tritium                                                     12               0           12              0 Gamma Iodine-129                                             1               0            0              0 Gas Flow Lead 210                                            4               0            6              0 Total Uranium KPA                                            4               0            4              0 Alpha Spec Uranium                                          25               0           28              0 Alpha Spec Thorium                                           4               0            7              0 Alpha Spec Plutonium                                        14               0           13              0 Alpha Spec Neptunium                                         1               0            1              0 Alpha Spec Plutonium                                         1               0            1              0 Gas Flow Sr 2nd count                                       10               0           10              0 Gas Flow Strontium 90                                       21               0           19              0 Gas Flow Total Radium                                        3               0            5              0 Alpha Spec Am241 Curium                                      7               0            5              0 Gamma Spec Solid RAD A-013 with Iodine                      79               0           86              0 Gamma Spec Solid RAD A- 013 (pCi/Sample)                     1               0            1              0 Alpha Spec Am241 (PCi/Sample)                                2               0            2              0 ICP-MS Uranium-234 235 236 238 in Solid                     10               0            4              0 Alpha Spec Uranium                                           1               0            2              0 Gross Alpha/Beta                                             8               0            9              0 Alpha Spec Plutonium                                         1               0            2              0 Gas Flow Strontium 90                                        4               0            2              0 ICP-MS Uranium-234, 235 236 238 Prep in Solid                4               0            2              0 AIR CHARCOAL Gamma Iodine 131 RAD A-013                                 529               0          577              0 Gamma Iodine-129                                            14               0            8              0 Alpha Spec Uranium                                           0               0            3              0 Alpha Spec Plutonium                                         0               0            3              0 Aloha Soec Am241Curium                                       0               0            3              0 Carbon-14                                                   16               0           16              0 Carbon-14 (Ascarite/Soda Lime Filter per Liter)             35               0           35              0 Gamma Iodine 129                                            17               0           17              0 Gamma Spec Filter                                           17               0           17              0 DRINKING WATER Alpha Spec Uranium                                           2               0            2              0 Alpha Spec Polonium                                          1               0            1              0 Tritium                                                     54               0           53              0 Carbon-14                                                    1               0            1              0 Iodine-131                                                  11               0           11              0 LSC Iron-55                                                 14               0           16              0 LSC Nickel 63                                               14               0           16              0 LSC Radon 222                                               13               0           13              0 Gamma Spec Liquid RAD A- 013                                31               0           88              0 C-34

Donald C. Cook Nuclear Plant                  Annual Radiological Environmental Operating Report 2015 Bias Criteria ( + I - 250/o   Precision Criteria (Note 1 l WITHIN          OUTSIDE         WITHIN           OUTSIDE Total Radiological 2015                           CRITERIA         CRITERIA       CRITERIA         CRITERIA Gamma Iodine-129                                                         8              0              13                0 Gamma Iodine- 131                                                       31              0              32                0 Total Uranium KPA                                                        9              0              26                0 Aloha Spec Thorium                                                       1              0               1                0 Gas Flow Radium 228                                                      1              0               0                0 Gas Flow Radium 228                                                     29              0              30                0 Aloha Soec Plutonium                                                     1              0               1                0 Gas Flow Sr 2nd count                                                   15              0              15                0 Gas Flow Strontium 90                                                   15              0              18                0 Lucas Cell Radium - 226                                                 58              0              70                0 Alpha Spec Am241 Curium                                                  1              0               1                0 Gas Flow Total Strontium                                                17              0              18                0 Gross Alpha Non Vol Beta                                               313              0             247                0 Tritium in Drinkinq Water by EPA 906.0                                  50              0              72                0 Gamma Spec Liquid RAD A-013 with Ba La                                  32              0              85                0 Gas Flow Strontium 89 & 90                                              23              0              16                0 Gross Aloha Co-precip itation                                          133              0              96                0 Aloha/Beta (Americium Calibration) Drinkinq Water                       17              0              17                0 ECLS-R-GA NJ 48 Hr Rapid Gross Aloha                                     3              0               3                0 Total                 19581                          22758 Note 1: The RPO must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPO must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC ,
then the RPO can be calculated using the MDC for the result of the one below the MDC . The RPO must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPO must be less than or equal to 20%. If both results are below MDC , then the limits on % RPO are not applicable.
C-35

Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 Table C-5 2015 Corrective Action Report Summary CORRECTIVE ACTION ID#
                 &                                             DISPOSITION PE FAILURE CARR150223-929                       Root Cause Analysis ISO Documentation of PT Failures in  Cesium-137 (Cs-137)
RAD 100 for Cesium-137 and           EPA 901.1, HASL 300 Ga-01, DOE 4.5.2.3 Radium-228.                          After a review of the data, an apparent reason for this discrepancy could not be determined. The following steps were taken to prove that this low bias was an isolated occurrence and that our overall process is within control.
: 1. The batch quality control samples were reviewed and found to be compliant. The LCS recovered at 105%.
: 2. Laboratory control data were also reviewed for trends. None were noted.
: 3. The instrument calibrations were reviewed for biases that could have attributed to this failure. Biases were not noted.
: 4. A sample duplicate was also prepared and counted along with the reported result. The result fell within the method's acceptance range for duplicates.
Permanent Corrective/Preventive Actions or Improvements :
The laboratory must assume unidentified random error caused the elevated bias because all quality control criteria were met for the batch. Additionally, a well characterized performance evaluation sample from another vendor W?S prepped and analyzed a few weeks after this sample. The lab will continue to monitor the recoveries of these parameters to ensure that there are no issues.
A second PT was successfully analyzed for this matrix.
Radium-228 (Ra-228}
RAD Naturals LAB PBMS A-009 After a review of the data, an apparent reason for this discrepancy could not be determined. The following steps were taken to prove that this low bias was an isolated occurrence and that our overall process is within control.
C-36

Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
                  &                                             DISPOSITION PE FAILURE
: 1. The batch quality control samples were reviewed and found to be compliant. The LCS recovered at 118%.
: 2. Laboratory control data were aiso reviewed for trends.
None were noted.
: 3. The instrument calibrations were reviewed for biases that could have attributed to this failure. Biases were not noted.
: 4. A sample duplicate was also prepared and counted along with the reported result. The result fell within the method's acceptance limit for duplicates with than RER of 0.62.
: 5. Sample was also reanalyzed after the report was received and a result (4.94 pCi/L) that fell well within the acceptance range of the study was obtained.
Changes were not made in the prep process for the reanalysis.
Permanent Corrective/Preventive Actions or Improvements :
The laboratory must assume unidentified random error caused the elevated bias because all quality control criteria were met for the batch. The lab will continue to monitor the recoveries of these parameters to ensure that there are no issues.
A second PT was successfully analyzed for this matrix.
CARR150519-954                      Root Cause Analysis ISO Documentation of PT Failures in The cause of this failure was determined to be human error.
-MRAD-22 for Total Uranium in       The Uranium-Total (mass) result was inadvertently entered as Vegetation by Alpha Spec            the resultfor Uranium-Total (pCi/Kg). These results are hand entered into the PT provider's databas~.
Permanent Corrective/Preventive Actions' or Improvements :
The laboratory has implemented automatic upload capabilities for performance sample results using CSV files. An EDD-like file is created directly from Alpha Urns and uploaded onto the PT provider's website. This will eliminate manual data entry C-37

Donald C. Cook Nuclear Plant       . Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
                 &                                             DISPOSITION PE FAILURE errors.
A second PT was successfully analyzed for this matrix.
CARR150610-962                       Root Cause Analysis of lodine-131 (1-131)
ISO Documentation of PT Failures in  After a review of the data, an apparent reason for this RAD-101 for lodine-131 in drinking   discrepancy could not be determined. The following steps water.                               were taken to prove that this high bias was an isolated occurrence and that our overall process is within control.
The batch quality control samples were reviewed and found to be compliant. The LCS recovered at 103%.
Laboratory control data were also reviewed for trends. None were noted.
The instrument calibrations were reviewed for positive biases that could have attributed to this failure. None were noted.
Sample duplicates were also prepared and counted along with the reported result. All results fell within the method's acceptance range for duplicates.
Perman~nt Corrective/Preventive Actions or Improvements The laboratory must assume an unidentified random error caused the high bias 'for this batch. While the LCS recovered outside of its acceptance range, the matrix spike (MS) recovery fell within both the acceptance range for the MS (80%-120%) and the acceptance range for the LCS (90%-
110%).
A second PT was successfully analyzed for this matrix.
CARR150825-971                       Root Cause Analysis of Strontium-89 (Sr-89)
EPA 905.0 ISO Documentation of PT Failures in RAD-103 for Strontium-89 in drinking The laboratory concluded that an unidentified random error water.                               caused the low bias for this batch because all quality control samples fell well within their acceptance ranges. We have reviewed the ERA Sr 89/90's from 2013-2015 to see if there is C-38

Donald C. Cook Nuclear Plant        Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
                 &                                            DISPOSITION PE FAILURE any consistent issues. The failures in that time frame were both high and low bias failures and were not conducted by the same analyst. We have noticed that the failure came in the series run in the late summer whereas the ones in January/February have been acceptable. We also reviewed the instruments that were used in the hopes that a preparation or calibration was not properly conducted, but our findings were inconclusive.
Because of the short half-life of th.e Sr-89, the investigations have been post-failure review of the process and the data. In the same time frame, quarterly milk PT's have been run through a similar process (includes an additional column but the basic separation of Sr from daughter products is the same) with acceptable results.
Also, as a note, no procedural changes were made between the acceptable and failed results, i.e., the laboratory analyzed the unacceptable PTs the same way we ran the acceptable samples. The lab will continue to monitor the recoveries of this radionuclide to ensure that there are no issues.
A second PT (RAD-104) was successfully analyzed for this matrix CARR151130-993                       Root Cause Analysis of Strontium-90 (Sr-90)
ISO Documentation of PT Failures in  After a review of the data, an apparent reason for this RAD-102 for Strontium-90 in drinking discrepancy could not be determined. The following steps water.                               were taken to prove that this high bias was an isolated occurrence and that our overall process is within control.
The batch quality control samples were reviewed and found to be compliant. The LCS recovered at within acceptance range.
Laboratory control data were also reviewed for trends. No trends were noted .
                                      .The instrument calibrations were reviewed for positive biases that could have attributed to this failure. None were noted.
Sample duplicates were also prepared and counted along with the reported result. All results fell within the method's C-39

Donald C. Cook Nuclear Plant   Annual Radiological Environmental Operating Report 2015 CORRECTIVE ACTION ID#
              &                                        DISPOSITION PE FAILURE acceptance range for duplicates.
Permanent Corrective/Preventive Actions or Improvements The laboratory must assume an unidentified random error caused the high bias for this batch. While the LCS recovered outside of its acceptance range, the matrix spike (MS) recovery fell within both the acceptance range for the MS (80%-120%) and the acceptance range for the LCS (90%-
110%).
C-40

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 Environmental TLDs Environmental dosimetry services for the reporting period of January - December, 2015 were provided by the Environmental Dosimetry Company (EDC) , Sterling , Massachusetts. The TLD systems at the EDC are calibrated and operated to ensure consistent and accurate evaluation of TLDs. The quality of the dosimetry results reported to EDC clients is ensured by in-house performance testing and independent performance testing by EDC clients.
The purpose of the dosimetry quality assurance program is to provide performance documentation of the routine processing of EDC dosimeters. Performance testing provides a statistical measure of the bias and precision of dosimetry processing against a reliable standard, which in turn points out any trends or performance changes . Dosimetry quality control tests are performed on EDC Panasonic 814 Environmental dosimeters. These tests include: (1) the in-house testing program conducted by the EDC QA Officer and (2) independent tests performed by EDC clients. In-house tests are performed using six pairs of 814 dosimeters, a pair is reported as an individual result and six pairs are reported as the mean result.
Excluded from this report are instrumentation checks. Although instrumentation checks represent an important aspect of the quality assurance program , they are not included as process checks in this report. Instrumentation checks represent between 5-10% of the TLDs processed.
Table C-6 provides a summary of individual dosimeter results evaluated against the EDC internal acceptance criteria for high-energy photons (Cs-137) only. The internal acceptance (tolerance) criteria for the Panasonic Environmental dosimeters are: +/- 15% for bias and +/- 12.8%
for precision . During this period , 100% (72/72) of the individual dosimeters, evaluated against these criteria met the tolerance limits for accuracy and 100% (72/72) met the criterion for precision .
Table C-7 provides the Bias + Standard deviation results for each group (N=6) of dosimeters evaluated against the internal tolerance criteria . Overall , 100% (12/12) of the dosimeter sets evaluated against the internal tolerance performance criteria met these criteria .
Table C-8 presents the independent blind spike results for irradiated dosimeters provided by client utilities during this annual period . All results passed the performance acceptance criterion .
Table C-6 Percentage of Individual Dosimeters That Passed EDC Internal Criteria January - December 2015( 1 ), !2l Number                                     % Passed Precision Dosimeter Type                            % Passed Bias Criteria Tested                                           Criteria Panasonic Environmental           72                   100                        100 1
         < lThis table summarizes results of tests conducted by EDC.
2
         < >Environmental dosimeter results  are free in air.
C-41

Donald C. Cook Nuclear Plant                 Annual Radiological Environmental Operating Report 2015 Table C-7 Mean Dosimeter Analyses ~N=6)
January - December 20151 ), 12l Standard        Tolerance Limit Process Date           Exposure Level     Mean Bias%
Deviation%            +/-15%
4/16/2015                  55                4.5                 1.1               Pass 4/28/2015                  91                2.7                 1.6               Pass 05/07/2015                  48                0.3                 1.3               Pass 7/22/2015                  28                1.5                 1.4               Pass 7/24/2015                 106                2.9                 1.8               Pass 8/06/2015                  77               -3 .3                1.3               Pass 10/30/2015                  28                3.7                2.2                Pass 11/04/2015                  63                2.5                 1.0               Pass 11 /22/2015                 85               -2 .9                1.7               Pass 1/27/2016                  61                3.1                0.9                Pass 1/31/2016                 112                2.2                 1.3               Pass 2/05/2016                  36                3.2                 1.4               Pass 1
(   l This table summarizes results of tests conducted by EDC for TLDs issued in 2015.
2
(   l Environmental dosimeter results are free in air.
Table C-8 Summary of Independent Blind Spike Dosimeter Testing January - December 2015( 1 ), l 2l Standard    Pass I Fail Issuance Period                 Client        Mean Bias%
Deviation%
1st Qtr. 2015           Millstone          -6 .5             2.9          Pass 2na Qtr.2015            Millstone          -2 .2             3.7          Pass 2na Qtr.2015            Seabrook            1.4              0.9          Pass 3ra Qtr. 2015           Millstone          -3.4              1.1          Pass 4tn Qtr.2015            Millstone          -1 .5             2.3          Pass 4tn Qtr.2015            Seabrook            0.8              1.8          Pass 1
(  l Performance criteria are +/- 30%.
2
(  l Blind spike irradiations using Cs-137 C-42

Donald C. Cook Nuclear Plant     Annual Radiological Environmental Operating Report 2015 APPENDIX D 2015 DATA 

==SUMMARY==

D-1

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC     FLAGS TYPE      STATION       U~N      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       364598001  117/2015     BETA        3.96E-02    2.05E-03     l.02E-03 AP         SBN       364598002  117/2015     BETA        3.61E-02     l.94E-03    1.0lE-03 AP         DOW       364598003  117/2015     BETA        3.61E-02     1.95E-03    1.0lE-03 AP         COL       364598004  117/2015     BETA        3.61E-02     1.92E-03    9.82E-04 AP         ONS-1     364598005  117/2015     BETA        4.07E-02    2.03E-03     9.70E-04 AP         ONS-2     364598006  117/2015     BETA        3.44E-02     1.86E-03    9.69E-04 AP         ONS-3     364598007  117/2015     BETA        3.72E-02    1.93E-03     9.64E-04 AP         ONS-4     364598008  117/2015     BETA        3.87E-02     1.96E-03    9.58E-04 AP         ONS-5     364598009  117/2015     BETA        3.79E-02    1.97E-03     9.90E-04 AP         ONS-6     364598010  117/2015     BETA        3.41E-02     1.85E-03    9.69E-04 AP         NBF       365202001 1114/2015     BETA        3.09E-02     1.78E-03    8.91E-04 AP         SBN       365202002 1/14/2015     BETA        3.36E-02     1.86E-03    8.88E-04 AP         DOW       365202003 1114/2015     BETA        3.37E-02    1.85E-03     8.81E-04 AP         COL       365202004 1114/2015     BETA        3.23E-02    1.82E-03     8.90E-04 AP         ONS-1     365202005 1114/2015     BETA        3.50E-02     1.91E-03    9.03E-04 AP         ONS-2     365202006 1114/2015     BETA        3.28E-02    1.85E-03     9.06E-04 AP         ONS-3     365202007 1/14/2015     BETA        3.26E-02     1.84E-03    9.0lE-04 AP         ONS-4     365202008 1/14/2015     BETA        3.IOE-02     1.77E-03    8.76E-04 AP         ONS-5     365202009 1/14/2015     BETA        3.60E-02    1.94E-03     9.02E-04 AP         ONS-6     365202010 1/14/2015     BETA        3.65E-02     1.94E-03    8.90E-04 AP         NBF       365672001 112112015     BETA        3.91E-02    2.05E-03     1.0lE-03 AP         SBN       365672002 1/21/2015     BETA        4.36E-02    2.15E-03     9.97E-04 AP         DOW       365672003 1/21/2015     BETA        3.60E-02     1.96E-03    1.0lE-03 AP         COL       365672004 1/2112015     BETA        3.70E-02    1.98E-03     1.00E-03 AP         ONS-1     365672005 1/21/2015     BETA        3.69E-02     1.97E-03    9.92E-04 AP         ONS-2     365672006 1/21/2015     BETA        3.44E-02     1.92E-03    1.0lE-03 AP         ONS-3     365672007 1/21/2015     BETA        3.79E-02    2.02E-03     1.0lE-03 AP         ONS-4     365672008 1/2112015     BETA        4.02E-02    2.07E-03     1.0lE-03 AP         ONS-5     365672009 112112015     BETA        3.38E-02     l.91E-03    l.02E-03 AP         ONS-6     365672010 112112015     BETA        3.49E-02     1.94E-03    1.0lE-03 AP        NBF        366148001 1/28/2015     BETA        2.07E-02    1.44E-03     9.86E-04 AP         SBN       366148002 1/28/2015     BETA        1.90E-02     l.37E-03    9.68E-04 AP         DOW       366148003 1/28/2015     BETA        2.57E-02     l.59E-03    9.73E-04 AP         COL       366148004 1/28/2015     BETA        2.22E-02     l.53E-03    l.04E-03 AP         ONS-1     366148005 1/28/2015     BETA        2.35E-02     l.56E-03    1.0lE-03 AP         ONS-2     366148006 1/28/2015     BETA        2.67E-02    1.66E-03     1.0lE-03 AP         ONS-3     366148007 1/28/2015     BETA        2.54E-02     l.59E-03    9.80E-04 AP         ONS-4     366148008 1/28/2015     BETA        2.97E-02    1.74E-03     9.99E-04 AP         ONS-5     366148009 1128/2015     BETA        2.51E-02     l.56E-03 . 9.51E-04 AP         ONS-6     366148010 1/28/2015     BETA        2.56E-02     1.61E-03    9.88E-04 AP        NBF        366679001 2/4/2015      BETA        2.58E-02     l.63E-03    9.48E-04 AP         SBN       366679002 2/4/2015      BETA        2.16E-02     l.49E-03    9.39E-04 AP         DOW       366679003 2/4/2015      BETA        2.39E-02     l.56E-03    9.34E-04 AP         COL       366679004 2/4/2015      BETA        2.48E-02     l.61E-03    9.63E-04 AP         ONS-1     366679005 2/4/2015      BETA        2.33E-02     l.55E-03    9.41E-04 AP         ONS-2     366679006 2/4/2015      BETA        2.72E-02     1.69E-03    9.61E-04 AP         ONS-3     366679007 2/4/2015      BETA        2.70E-02    1.65E-03     9.24E-04 AP         ONS-4     366679008 2/4/2015      BETA        2.58E-02     1.61E~03    9.20E-04 AP         ONS-5     366679009 2/4/2015      BETA        2.57E-02     1.60E-03    9.14E-04 AP         ONS-6     366679010 2/4/2015      BETA        2.32E-02     1.52E-03    9.15E-04 D-2

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN        DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         NBF       367176001   2/11/2015     BETA         3.50E-02    l.9IE-03    9.85E-04 AP         SBN       367176002   2/11/2015     BETA         3.77E-02    l.98E-03    9.77E-04 AP         DOW       367176003   2/11/2015     BETA         4.33E-02   2.IOE-03     9.61E-04 AP         COL       367176004   2111/2015     BETA         3.63E-02    l.96E-03    l.OOE-03 AP         ONS-1     367176005   2/11/2015     BETA         3.38E-02    1.87E-03    9.84E-04 AP         ONS-2     367176006   2/11/2015     BETA         3.41E-02    l.90E-03    l.OOE-03 AP         ONS-3     367176007   2/11/2015     BETA         3.44E"02    l.88E-03    9.69E-04 AP         ONS-4     367176008   2/11/2015     BETA         3.46E-02    l.90E-03    9.84E-04 AP         ONS-5     367176009   2/11/2015     BETA         4.36E-02   2.l lE-03    9.59E-04 AP         ONS-6     367176010   2/11/2015     BETA         3.67E-02    l.96E-03    9.90E-04 AP         NBF       367474001   2118/2015     BETA         2.81E-02    I.69E-03    9.35E-04 AP         SBN       367474002   2118/2015     BETA         3.24E-02    l.80E-03    9.23E-04 AP         DOW       367474003   2/18/2015     BETA        2.34E-02     l.51E-03    8.99E-04 AP         COL       367474004   2/18/2015     BETA         2.49E-02    l.60E-03    9.48E-04 AP         ONS-1     367474005   2/18/2015     BETA         3.07E-02    l.76E-03    9.29E-04 AP         ONS-2     367474006   2/18/2015     BETA         2.78E-02    l.67E-03    9.24E-04 AP         ONS-3     367474007   2/18/2015     BETA         2.75E-02    l.66E-03    9.20E-04 AP         ONS-4     367474008   2/18/2015     BETA        2.44E-02     l.57E-03    9.24E-04 AP         ONS-5     367474009   2/18/2015     BETA       *3.26E-02     I.79E-03    9.05E-04 AP         ONS-6     367474010   2/18/2015     BETA        2.89E-02     l.70E-03    9.20E-04 AP         NBF       372291001    4/1/2015    Ac-228       -3.81E-04   3.90E-04     l.12E-03 u AP         NBF       372291001    4/1/2015   Ag-108m        l.06E-04   8.74E-05     3.06E-04 u AP         NBF       372291001    4/1/2015   Ag-llOm       -3.80E-04   2.09E-04     4.lOE-04 u AP        NBF        372291001   4/1/2015     Ba-140       -4.52E-06   3.50E-02     l.13E-01 u AP        NBF        372291001   4/1/2015       Be-7        l.19E-Ol    l.02E-02    8.49E-03 AP         NBF       372291001   4/1/2015     Ce-141       -4.54E-04   7.94E-04     2.39E-03 u AP         NBF       372291001   4/1/2015     Ce-144       -6.68E-04   6.37E-04     l.83E-03 u AP         NBF       372291001    4/1/2015     Co-57       -l.94E-05   8.26E-05     2.48E-04 u AP         NBF       372291001    4/1/2015     Co-58        5.21E-04   2.70E-04     9.99E-04 u AP        NBF        372291001   4/1/2015      Co-60       -3.08E-05    l.53E-04    4.96E-04 u AP        NBF        372291001   4/1/2015      Cr-51       -l.08E-02   7.79E-03     l.76E-02 u AP         NBF       372291001   4/1/2015     Cs-134        l.74E-04    l.49E-04    5.00E-04 u AP        NBF        372291001   4/1/2015     Cs-137       -l.44E-04   1.15E-04     3.12E-04 u AP         NBF       372291001    4/1/2015     Fe-59       -6:23E-04   9.60E-04     2.76E-03 u AP         NBF       372291001    4/1/2015     I-131        6.58E-02    l.84E-01    O.OOE+OO UI AP        NBF        372291001   4/1/2015      K-40        2.41E-04     l.64E-03    6.03E-03 u AP        NBF        372291001   4/1/2015     La-140       2.65E-02     l.73E-02    6.89E-02 U AP        NBF        372291001   4/1/2015      Mn-54       -4.85E-05    l.30E-04    4.06E-04 U AP         NBF       372291001   4/1/2015      Nb-95        7.79E-04   3.20E-04     l.14E-03 u AP         NBF       372291001    4/1/2015    Ru-103        8.82E-05   4.43E-04     l.46E-03 u AP        NBF        372291001    4/1/2015    Ru-106        2.55E-04    l.16E-03    3.99E-03 u AP        NBF        372291001   4/1/2015     Sb-124       -6.12E-04   8.19E-04     2.20E-03 u AP        NBF        372291001   4/1/2015     Sb-125        l.84E-04   2.87E-04     9.82E-04 u AP        NBF        372291001    4/1/2015     Se-75       4.47E-05    2.09E-04     7.09E-04 u AP        NBF        372291001    4/1/2015    Th-228        3.42E-04   2.27E-04     6.26E-04 u AP         NBF       372291001    4/1/2015     Zn-65        5.37E-04   3:63E-04     l.34E-03 u AP        NBF        372291001 \ 4/1/2015      Zr-95        l.45E-03   7.04E-04     2.38E-03 u AP         SBN       372291002   4/1/2015     Ac-228       -1.86E-04   4.15E-04     l.27E-03 u AP         SBN       372291002   4/1/2015    Ag-108m       -l.35E-04   8.93E-05     2.25E-04 u AP         SBN       372291002    4/1/2015   Ag-llOm        l.98E-04    l.64E-04    5.98E-04 u D-3

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         SBN       372291002 4/112015    Ba-140       -5.58E-02   3.92E-02     l.06E-01 u AP         SBN       372291002 4/112015     Be-7         1.21E-01   9.93E-03     7.20E-03 AP         SBN       372291002 4/1/2015    Ce-141        8.99E-04   7.61E-04     2.60E-03 u AP         SBN       372291002 4/112015    Ce-144        6.28E-04   5.83E-04     l.82E-03 u AP         SBN       372291002 4/112015     Co-57       -2.65E-05   6.40E-05     2.IOE-04 u AP         SBN       372291002 4/112015     Co-58       -1.12E-04    1.73E-04    5.0IE-04 u AP         SBN       372291002 4/1/2015     Co-60        2.33E-04    1.53E-04    5.67E-04 u AP         SBN       372291002 4/112015     Cr-51        8.73E-03   6.14E-03     2.lOE-02 u AP         SBN       372291002 4/112015    Cs-134       -2.58E-05    l.31E-04    4.19E-04 u AP         SBN       372291002 4/112015    Cs-137       -4.98E-05   9.95E-05     3.lOE-04 u AP         SBN       372291002 4/112015     Fe-59       -9.38E-04   6.14E-04     1.06E-03 u AP         SBN       372291002 4/112015     I-131        2.29E-01    l.46E-01    O.OOE+OO UI AP         SBN       372291002 4/112015     K-40       . 1.0IE-03    l.22E-03    5.03E-03 u AP         SBN       372291002 4/1/2015    La-140        5.91E-03   9.54E-03     3.62E-02 U AP         SBN       372291002 4/112015     Mn-54       -l.77E-04    l.29E-04    3.24E-04 U AP         SBN       372291002 4/11201.5    Nb-95.      -5.82E-04   2.99E-04     6.97E-04 U AP         SBN       372291002 4/112015    Ru-103       -3.72E-04   3.81E-04     l.13E-03 u AP         SBN       372291002 4/112015    Ru-106       -2.13E-03    1.1 IE-03   2.51E-03 u.
AP         SBN       372291002 4/1/2015    Sb-124        7.76E-04   6.13E-04     2.43E-03 u AP         SBN       372291002 4/1/2015    Sb-125       -3.llE-05   2.73E-04     8.68E-04 U AP         SBN       372291002 4/1/2015     Se-75        8.14E-05    1.92E-04    6.44E-04 U AP         SBN       372291002 4/112015    Th-228        4.77E-04   2.30E-04     6.0SE-04 u AP         SBN       372291002 4/1/2015     Zn-65       -5.50E-04   3.46E-04     7.54E-04 u AP         SBN       372291002 4/1/2015     Zr-95        7.95E-04   3.39E-04     1.32E-03 u AP        DOW        372291003 4/112015    Ac-228       -9.21E-04   5.llE-04     l.41E-03 u AP        DOW        372291003 4/112015   Ag-108m       -5.94E-05   8.41E-05     2.66E-04 u AP        DOW        372291003 4/1/2015   Ag-llOm        3.36E-05    l.85E-04    6.17E-04 u AP        DOW        372291003 4/112015    Ba-140       -2.65E-02   4.19E-02     l.31E-Ol u AP        DOW        372291003 4/112015     Be-7         9.96E-02   8.63E-03     7.97E-03 AP        DOW        372291003 4/112015    Ce-141       -1.18E-03   8.65E-04     2.36E-03 u AP         DOW       372291003 4/112015    Ce-144       -l.55E-03   7.22E-04     1.77E-03 u AP         DOW       372291003 4/112015     Co-57        6.79E-06   7.07E-05     2.33E-04 u AP         DOW       372291003 4/112015     Co-58       -3.40E-04   2.llE-04     5.22E-04 u AP         DOW       372291003 4/1/2015    .Co-60       -5.99E-07    l.33E-04    4.37E-04 u AP         DOW       372291003 4/112015     Cr-51       -1.43E-02   7.53E-03     l.94E-02 u AP        DOW        372291003 4/1/2015    Cs-134       -2.39E-04    l.27E-04    3.29E-04 u AP        DOW        372291003 4/1/2015    Cs-137       -1.0SE-04    l.OSE-04    3.llE-04 u AP        DOW        372291003 4/112015     Fe-59       -7.55E-04   7.12E-04     2.0IE-03 u AP         DOW       372291003 4/112015     I-131       -l.41E-01    l.69E-01   O.OOE+OO  u AP         DOW       372291003 4/112015     K-40         2.0IE-03    l.25E-03    4.14E-03 u AP         DOW       372291003 4/112015    La-140       -5.84E-03    l.75E-02    5.59E-02 u AP         DOW       372291003 4/112015    Mn-54         l.72E-04    l.31E-04    4.58E-04 u AP         DOW       372291003 4/112015     Nb-95       -l.53E-04   2.54E-04     7.33E-04 u AP         DOW       372291003 4/1/2015    Ru-103        2.14E-03   8.55E-04     l.28E-03 u~
AP         DOW       372291003 4/112015    Ru-106       -4.20E-06    1.34E-03    3.73E-03 u AP         DOW       372291003 4/112015    Sb-124       -1.46E-03   8.40E-04     l.89E-03 u AP        DOW        372291003 4/112015    Sb-125        l.43E-05   2.57E-04     8.64E-04 u AP        DOW        372291003 4/112015     Se-75       -5.25E-05   2.17E-04     6.41E-04 u AP        DOW        372291003 4/112015    Th-228        1.26E-04    l.99E-04    6.16E-04 u AP        DOW        372291003 4/112015     Zn-65       -2.56E-04   2.67E-04     7.70E-04 u D-4

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN     DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         DOW       372291003 4/112015     Zr-95       l.37E-04    4.18E-04     l.43E-03 u AP         COL       372291004 4/1/2015    Ac-228      -2.16E-04    5.68E-04     2.04E-03 u AP         COL       372291004 4/1/2015   Ag-108m      -5.41E-05    9.57E-05     2.97E-04 u AP         COL       372291004 4/1/2015   Ag-llOm      -2.32E-04    2.30E-04     6.41E-04 u AP         COL       372291004 4/1/2015    Ba-140      -6.32E-02    5.07E-02     l.35E-Ol u AP         COL       372291004 4/112015      Be-7       l.IIE-01    9.73E-03     l.08E-02 AP         COL       372291004 4/1/2015    Ce-141       8.43E-04    9.28E-04     3.14E-03 u AP         COL       372291004 4/1/2015    Ce-144      -6.69E-05    6.25E-04     2.05E-03 u AP         COL       372291004 4/1/2015     Co-57       l.49E-04     1.0IE-04    3.42E-04 u AP         COL       372291004 4/112015     Co-58      -l.16E-04    2.19E-04     6.64E-04 u AP         COL       372291004 4/112015     Co-60       2.25E-05     l.60E-04    5.48E-04 u AP         COL       372291004 4/112015     Cr-51      -6.13E-03    8.61E-03     2.73E-02 u AP         COL       372291004 4/112015    Cs-134      -l.07E-04     l.64E-04    5.03E-04 u AP         COL       372291004 4/112015    Cs-137       2.3IE-04     l.25E-04    4.40E-04 u AP         COL       372291004 4/1/2015     Fe-59       3.39E-04    8.98E-04     3.lOE-03 u AP         COL       372291004 4/1/2015     1-131       2.29E-02    2.22E-Ol    O.OOE+OO UI AP         COL       372291004 4/1/2015     K-40        2.00E-03     l.84E-03    7.12E-03 u AP         COL       372291004 4/112015    La-140       7.39E-03     l.25E-02    4.76E-02 u AP         COL       372291004 4/112015    Mn-54       -l.53E-04     l.38E-04    3.72E-04 u AP         COL       372291004 4/112015     Nb-95      -2.34E-05    2.55E-04     8.46E-04 u AP         COL       372291004 4/112015    Ru-103       7.62E-05    5.46E-04     l.81E-03 u AP         COL       372291004 4/1/2015    Ru-106      -4.03E-04     l.19E-03    3.67E-03 u AP         COL       372291004 4/112015    Sb-124       4.70E-06    9.94E-04     3.28E-03 u AP        COL        372291004 4/1/2015    Sb-125      -5.43E-04    3.24E-04     7.97E-04 u AP         COL       372291004 4/112015     Se-75       2.00E-04    2.25E-04     7.51E-04 u AP         COL       372291004 4/112015    Th-228       8.45E-07    2.30E-04     7.82E-04 u AP         COL       372291004 4/112015     Zn-65      -l.13E-03    5.16E-04     8.67E-04 u AP         COL       372291004 4/112015     Zr-95       7.58E-04    5.07E-04     l.90E-03 u AP         ONS-1     372291005 4/1/2015    Ac-228      -4.9IE-04    5.57E-04     l.71E-03 u AP        ONS-1      372291005 4/1/2015   Ag-108m      -9.85E-06    8.98E-05     2.96E-04 u AP         ONS-1     372291005 4/112015   Ag-llOm       9.50E-05    2.23E-04     7.46E-04 u AP         ONS-1     372291005 4/112015    Ba-140      -l.53E-02    3.68E-02     l.15E-Ol u AP         ONS-1     372291005 4/112015     Be-7        l.27E-Ol    9.32E-03. 9.04E-03 AP         ONS-1     372291005 4/112015    Ce-141      -2.51E-04    8.80E-04     2.73E-03 u AP         ONS-1     372291005 4/1/2015    Ce-144       l.02E-03    6.67E-04     2.19E-03 u AP        ONS-1      372291005 4/1/2015     Co-57       2.32E-05    7.85E-05     2.59E-04 u AP         ONS-1     372291005 4/112015     Co-58      -8.58E-05    2.60E-04     8.23E-04 u AP         ONS-1     372291005 4/112015     Co-60      -l.39E-04     l.40E-04    4.03E-04 u AP         ONS-1     372291005 4/112015     Cr-51      -5.00E-03    7.14E-03     2.13E-02 u AP         ONS-1     372291005 4/112015    Cs-134       l.12E-04     l.35E-04    4.66E-04 u AP         ONS-1     372291005 4/112015    Cs-137       2.68E-04     l.37E-04    4.65E-04 u AP        ONS-1      372291005 4/1/2015     Fe-59       6.92E-04    8.25E-04     2.90E-03 u AP         ONS-1     372291005 4/1/2015     1-131       3.45E-Ol    2.00E-01    O.OOE+OO UI AP         ONS-1     372291005 4/112015     K-40        9.87E-04     l.66E-03    6.02E-03 u AP         ONS-1     372291005 4/l/20l5    La-140      -2.90E-02     l.92E-02    3.94E-02 u AP         ONS-1     372291005 4/1/2015     Mn-54      -l.73E-05     l.36E-04    4.40E-04 u AP        ONS-1      372291005 4/1/2015     Nb-95      -l.23E-04    2.84E-04     8.96E-04 u AP        ONS-1      372291005 411/2015    Ru-103       4.86E-04    4.89E-04     l.66E-03 u AP         ONS-1     372291005 4/112015    Ru-106      -2.27E-04    9.71E-04     3.20E-03 u AP         ONS-1     372291005 4/112015    Sb-124      -4.65E-05    7.25E-04     2.34E-03 u D-5

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-1     372291005 4/112015    Sb-125      -1.43E~04    2.90E-04     9.26E-04 u AP         ONS-1     372291005 4/112015     Se-75       1.51E-04    2.14E-04     6.99E-04 u AP         ONS-1     372291005 4/112015    Th-228       1.34E-06    3.21E-04     5.39E-04 u AP         ONS-1     372291005 4/112015     Zn-65      -1.19E-04    3.42E-04     l.09E-03 u AP         ONS-1     372291005 4/1/2015     Zr-95      -8.07E-05    4.82E-04     1.57E-03 u AP         ONS-2     372291006 4/112015    Ac-228       8.21E-04    4.96E-04     1.77E-03 u AP         ONS-2     372291006 4/112015   Ag-108m       2.16E-05    8.28E-05     2.40E-04 u AP         ONS-2     372291006 4/112015   Ag-llOm      -5.56E-05     1.73E-04    5.38E-04 u AP         ONS-2     372291006 4/1/2015    Ba-140       6.17E-03    3.56E-02     1.22E-01 u AP         ONS-2     372291006 4/112015     Be-7        l.37E-01     1.03E-02    6.75E-03 AP         ONS-2     372291006 4/112015    Ce-141      -2.98E-05    6.91E-04     2.32E-03 u AP         ONS-2     372291006 4/1/2015    Ce-144       9.93E-05    5.04E-04     l.72E-03 u AP         ONS-2     372291006 4/112015     Co-57       9.43E-05    6.84E-05     2.36E-04 u AP         ONS-2     372291006 4/1/2015     Co-58      -6.0lE-05    2.24E-04     7.lOE-04 u AP         ONS-2     372291006 4/1/2015     Co-60      -6.94E-05     1.08E-04    3.13E-04 u AP         ONS-2     372291006 4/1/2015     Cr-51      -4.21E-03    6.43E-03     1.97E-02 u AP         ONS-2     372291006 4/112015    Cs-134      -3.08E-05     1.24E-04    3.95E-04 u AP         ONS-2     372291006 4/1/2015    Cs-137       1.45E-04     1.12E-04    3.99E-04 u AP         ONS-2     372291006 4/1/2015     Fe-59      -3.24E-04    7.59E-04     2.26E-03 u AP         ONS-2     372291006 4/112015     I-131      -1.lOE-01     1.67E-01    O.OOE+OO u AP         ONS-2     372291006 4/112015     K-40        l.78E-03     l.38E-03    5.64E-03 u AP         ONS-2     372291006 4/1/2015    La-140       1.07E-02     l.IOE-02
* 4.32E-02 u AP         ONS-2     372291006 4/112015    Mn-54       -4.74E-05     l.31E-04    4.lOE-04 u AP        ONS-2      372291006 4/112015     Nb-95      -4.36E-04    2.15E-04     4.47E-04 u AP         ONS-2     372291006 4/1/2015    Ru-103       4.58E-04    3.57E-04     l.29E-03 u AP         ONS-2     372291006 4/1/2015    Ru-106       1.lOE-04     1.lOE-03    3.71E-03 u AP         ONS-2     372291006 4/1/2015    Sb-124      -1.07E-03    6.99E-04     l.22E-03 u AP         ONS-2     372291006 4/1/2015    Sb-125      -2.21E-04    2.95E-04     7.28E-04 u AP         ONS-2     372291006 4/112015     Se-75       l.27E-05     1.65E-04    5.45E-04 u AP        ONS-2      372291006 4/112015    Th-228       4.40E-04    2.65E-04     6.03E-04 u AP         ONS-2     372291006 4/1/2015     Zn-65      -4.67E-05    3.16E-04     9.96E-04 u AP         ONS-2     372291006 4/1/2015     Zr-95      -3.53E-07    4.25E-04     1.40E-03 u AP         ONS-3     372291007 4/112015    Ac-228       7.59E-04    6.44E-04     2.25E-03 u AP         ONS-3     372291007 4/1/2015   Ag-108m       1.97E-04     l.18E-04    3.71E-04 u AP         ONS-3     372291007 4/112015   Ag-llOm      -2.50E-05     1.91E-04    6.03E-04 u AP         ONS-3     372291007 4/1/2015    Ba-140      -l.13E-02    3.73E-02     l.21E-Ol u AP         ONS-3     372291007 4/1/2015     Be-7        1.41E-01     1.14E-02    8.54E-03 AP         ONS-3     372291007 4/112015    Ce-141      -1.68E-04    7.84E-04     2.57E-03 u AP         ONS-3     372291007 4/1/2015    Ce-144      -5.50E-04    6.19E-04     l.89E-03 u AP         ONS-3     372291007 4/112015     Co-57      -8.40E-06    7.86E-05     2.61E-04 u AP         ONS-3     372291007 4/1/2015     Co-58      -4.71E-04    3.50E-04     8.88E-04 u AP         ONS-3     372291007 4/1/2015     Co-60       4.22E-05     1.41E-04    4.82E-04 u AP         ONS-3     372291007 4/112015     Cr-51      -5.38E-03    6.86E-03     2.lOE-02 u AP         ONS-3     372291007 4/112015    Cs-134      -1.66E-04     l.50E-04    3.93E-04 u AP         ONS-3   . 372291007 4/112015    Cs-137      -4.14E-05     l.25E-04    3.97E-04 u AP         ONS-3     372291007 4/112015     Fe-59      -5.99E-04    8.02E-04     2.23E-03 u AP         ONS-3     372291007 4/112015     I-131       5.19E-02    2.09E-01     O.OOE+OO UI AP         ONS-3     372291007 4/112015     K-40       -5.03E-04     1.52E-03    5.35E-03 u AP         ONS-3     372291007 4/112015    La-140       2.18E-02     1.69E-02    6.73E-02 u AP         ONS-3     372291007 4/112015    Mn-54       -1.65E-04    2.06E-04     6.0lE-04 u D-6

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-3     372291007 4/1/2015     Nb-95      -2.59E-06     2.82E-04    9.23E-04  u AP         ONS-3     372291007 4/1/2015    Ru-103       l.13E-04     4.40E-04    1.46E-03  u AP         ONS-3     372291007 4/1/2015    Ru-106      -l.77E-03     l.31E-03    3.44E-03  u AP         ONS-3     372291007 4/1/2015    Sb-124      -3.59E-04     8.07E-04    2.36E-03  u AP         ONS-3     372291007 4/1/2015    Sb-125      -5.20E-05     3.48E-04    1.12E-03  u AP         ONS-3     372291007 4/1/2015     Se-75       3.llE-04   . 2.49E-04    8.48E-04  u AP         ONS-3     372291007 4/1/2015    Th-228       2.69E-04     2.48E-04    7.31E-04  u AP         ONS-3     372291007 4/1/2015     Zn-65       3.62E-05     4.25E-04    1.42E-03  u AP         ONS-3     372291007 4/1/2015     Zr-95       l.28E-04     3.05E-04    1.0SE-03  u AP         ONS-4     372291008 4/1/2015    Ac-228       8.20E-04     4.81E-04    l.83E-03  u AP         ONS-4     372291008 4/1/2015   Ag-108m       6.21E-05     8.77E-05    3.04E-04  u AP         ONS-4     372291008 4/1/2015   Ag-1 lOm      1.68E-04     2.05E-04    7.07E-04  u AP         ONS-4     372291008 4/1/2015    Ba-140       4.31E-02     4.32E-02    l.50E-01  u AP         ONS-4     372291008 4/1/2015     Be-7        l.09E-01     9.78E-03    8.32E-03 AP         ONS-4     372291008 4/1/2015    Ce-141       l.09E-03     7.19E-04    2.21E-03  u AP         ONS-4     372291008 4/1/2015    Ce-144       6.40E-04     5.93E-04    2.0lE-03  u AP         ONS-4     372291008 4/1/2015     Co-57       6.35E~o5     7.69E-05    2.61E-04  u AP         ONS-4     372291008 4/1/2015     Co-58       5.61E-04     2.47E-04    8.65E-04  u AP         ONS-4     372291008 4/1/2015     Co-60       7.26E-06     5.60E-05    1.92E-04  u AP         ONS-4     372291008 4/1/2015     Cr-51       7.96E-03     6.98E-03    2.33E-02  u AP         ONS-4     372291008 411/2015    Cs-134      -4.62E-05     l.32E-04    4.09E-04  u AP         ONS-4     372291008 4/1/2015    Cs-137       l.89E-04     l.21E-04    4.24E-04  u AP         ONS-4     372291008 4/1/2015. Fe-59      -1.llE-03     8.62E-04    2.23E-03  u AP         ONS-4     372291008 4/1/2015     1-131      -l.63E-01     1.78E-01   O.OOE+OO   u AP         ONS-4     372291008 4/1/2015     K-40       -l.71E-03     l.66E-03    5.39E-03  u AP         ONS-4     372291008 4/1/2015    La-140       2.00E-02     l.55E-02    5.88E-02  u AP         ONS-4     372291008 411/2015     Mn-54       l.03E-04     l.25E-04    4.35E-04  u AP         ONS-4     372291008 4/1/2015     Nb-95      -3.09E-04     3.63E-04    8.73E-04  u AP         ONS-4     372291008 411/2015    Ru-103       l.OlE-04     4.78E-04    l.61E-03  u AP         ONS-4     372291008 4/1/2015    Ru-106      -1.07E-05     l.12E-03    3.67E-03  u AP         ONS-4     372291008 4/1/2015    Sb-124      -5.91E-05     6.46E-04    2.05E-03  u AP         ONS-4     372291008 4/1/2015    Sb-125      -5.91E-05     2.79E-04    9.20E-04  u AP         ONS-4     372291008 4/1/2015     Se-75       2.46E-04     2.12E-04    6.40E-04  u AP         ONS-4     372291008 4/1/2015    Th-228       3.31E-05     l.73E-04    5.81E-04  u AP         ONS-4     372291008 4/1/2015     Zn-65      -3.13E-04     3.27E-04    9.29E-04  u AP         ONS-4     372291008 4/1/2015     Zr-95      -1.16E-03     6.19E-04    1.26E-03  u AP         ONS-5     372291009 4/1/2015    Ac-228       1.72E-05     5.17E-04    1.SOE-03  u AP         ONS-5     372291009 4/1/2015   Ag-108m       2.21E-04     l.llE-04    3.79E-04  u AP         ONS-5     372291009 4/1/2015   Ag-llOm       l.12E-04     2.03E-04    6.95E-04  u AP         ONS-5     372291009 4/1/2015    Ba-140      -8.68E-03     4.49E-02    1.47E-01  u AP         ONS-5     372291009 4/1/2015     Be-7        1.22E-01     1.0lE-02    8.90E-03 AP         ONS-5     372291009 4/1/2015    Ce-141      -4.79E-04     7.24E-04    2.34E-03  u AP         ONS-5     372291009 4/1/2015    Ce-144      -9.54E-04     6.38E-04    1.86E-03  u AP         ONS-5     372291009 4/1/2015     Co-57      -3.66E-06     8.52E-05    2.70E-04. u AP         ONS-5     372291009 4/1/2015     Co-58      -3.62E-04     2.30E-04    4.95E-04  u AP         ONS-5     372291009 4/1/2015     Co-60      -4.50E-05     9.55E-05    2.76E-04  u AP         ONS-5     372291009 4/1/2015     Cr-51      -5.22E-03     7.32E-03    2.23E-02  u AP         ONS-5     372291009 4/1/2015    Cs-134       l.19E-04     l.51E-04    5.21E-04  u AP         ONS-5     372291009 4/1/2015    Cs-137      -1.67E-04     l.46E-04    4.68E-04  u AP         ONS-5     372291009 4/1/2015     Fe-59       3.09E-05     6.47E-04    2.17E-03  u D-7

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC        STD.DEV.      MDC        FLAGS TYPE      STATION       LSN      DATE       NUCLIDE       (pCi/m3)       (pCi/m3)  (pCi/m3)
AP         ONS-5     372291009  4/112015      I-131      l.22E-Ol        l.92E-Ol O.OOE+OO  UI AP         ONS-5     372291009  4/112015      K-40       2.70E-03       2.lOE-03   8.14E-03 U AP         ONS-5     372291009  4/112015     La-140      l.62E-03        1.13E-02  3.91E-02 u AP         ONS-5     372291009  4/112015     Mn-54      -l.22E-04        1.42E-04  4.00E-04 U AP         ONS-5     372291009  4/112015     Nb-95      -l.48E-04       3.23E-04   l.02E-03 U AP         ONS-5     372291009  4/1/2015     Ru-103     -2.80E-04       4.56E-04   l.44E-03 U AP         ONS-5     372291009  4/112015     Ru-106      7.43E-04        1.13E-03  3.93E-03 U AP         ONS-5     372291009  4/1/2015     Sb-124      4.33E-05       6.68E-04   2.26E-03 U AP         ONS-5     372291009  4/1/2015     Sb-125      3.66E-04       2.83E-04   9.72E-04 U AP         ONS-5     372291009  4/112015      Se-75     -2.91E-05        l.95E-04  6.36E-04 U AP         ONS-5     372291009  4/112015     Th-228     -4.61E-05        1.76E-04  5.94E-04 U AP         ONS-5     372291009  4/112015     Zn-65      -3.45E-04       3.46E-04   9.63E-04 U AP         ONS-5     372291009  4/1/2015      Zr-95      2.53E-04       3.63E-04   l.29E-03 U AP         ONS-6     372291010  4/1/2015     Ac-228      l.30E-04       4.02E-04   l.43E-03 U AP         ONS-6     372291010  4/1/2015 . Ag-108m      4.62E-05       8.90E-05   3.02E-04 U AP         ONS-6     372291010  4/1/2015    Ag-llOm      5.78E-05        1.66E-04  5.76E-04 U AP         ONS-6     372291010  4/1/2015     Ba-140      4.33E-02       4.35E-02   l.51E-01 u AP         ONS-6     372291010  4/1/2015      Be-7       l.31E-Ol        l.04E-02  8.16E-03 AP         ONS-6     372291010  4/1/2015     Ce-141      2.91E-03        l.06E-03  3.13E-03 U AP         ONS-6     372291010  4/1/2015     Ce-144     -l.79E-04       7.21E-04   2.24E-03 U AP         ONS-6     372291010  4/1/2015     Co-57       l.42E-04       8.71E-05   2.86E-04 U AP         ONS-6     372291010  4/1/2015     Co-58      -8.0lE-04       3.81E-04   5.02E-04 U AP         ONS-6     372291010  4/1/2015     Co-60       l.24Ec04        l.44E-04  5.20E-04 U AP         ONS-6     372291010  4/1/2015      Cr-51     -6.81E-03       7.32E-03   2.20E-02 U AP         ONS-6     372291010  4/1/2015     Cs-134     -l.llE-05       l.32E-04   4.35E-04 U AP         ONS-6     372291010  4/1/2015     Cs-137      4.97E-05        l.06E-04  3.74E-04 U AP         ONS-6     372291010  4/1/2015      Fe-59      5.58E-04       7.55E-04   2.87E-03 U AP         ONS-6     372291010  4/1/2015      I-131      3.12E-Ol       2.02E-01  O.OOE+OO  UI AP         ONS-6     372291010  4/1/2015      K-40       l.50E-03        l.75E-03  6.63E-03 U AP        ONS-6      372291010  4/112015     La-140     -l.72E-02       l.88E-02   5.08E-02 U AP        ONS-6      372291010  4/1/2015     Mn-54      -2.21E-05       l.33E-04   4.32E-04 U AP         ONS-6     372291010  411/2015     Nb-95       4.97E-05       2.92E-o4   9.92E-04 U AP         ONS-6     372291010  4/1/2015     Ru-103      8.~lE-05      A.24E-04    l.40E-03 U AP         ONS-6     372291010  4/1/2015     Ru-106     -2.59E-04       9.40E-04   2.88E-03 U AP         ONS-6     372291010  4/1/2015     Sb-124      3.34E-05       7.4~E-04   2.49E-03 U AP        ONS-6      372291010  4/112015     Sb-125      l.66E-04    - 3*.2if:-04  l.09E-03 U AP        ONS-6      372291010  4/1/2015      Se-75      l.62E-04    .* 2.13E-o4   7.34E-04 U AP        ONS-6      372291010  4/1/2015     Th-228      l.83E-04    : 1.89E:-o4   6.50E-04 U AP        ONS-6      372291010  4/1/2015     Zn-65       3.91E-04       3.70E-o4   l.33E-03 U AP         ONS-6     372291010  4/1/2015      Zr-95      3.58E-05  : -5.22f-04     l.76E-03 U AP        NBF        367835001 2/25/2015     BETA        5.51E-02   ~ 2.3$~-03     8.57E-04 AP        SBN        367835002 2/25/2015     BETA        5.84E-02       2.48E-03 f  ~ ~
8.77E-04 AP        DOW        367835003 2/25/2015     BETA        6.07E-02       2.50~-03   8.60E-04 AP        COL        367835004 2/25/2015     BETA        5.20E-02       2.31E-03   8.64E-04 AP        ONS-1      367835005 2/25/2015     BETA        5.24E-02       2.33E-03   8.72E-04 AP        ONS-2      367835006 2/25/2015     BETA        6.14E-02  .-~  25iiE-03
                                                                          .. 0     8.54E-04 AP        ONS-3      367835007 2/25/2015     BETA        5.67E-02    I  2.45&#xa3;-03   8.85E-04 AP        ONS-4      367835008 2/25/2015     BETA        5.50E-02    :--2:43&#xa3;-03   8.99E-04 AP        ONS-5      367835009 2/25/2015     BETA        5.78E-02       2.47E-03   8.82E-04 AP        ONS-6      367835010 2/25/2015     BETA        5.16E-02       2.31E-03   8.70E-04
:: ~I      ,.
D-8

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC     FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        NBF        368255001 2/28/2015     BETA        3.44E-02     l.88E-03    9.55E-04 AP         SBN       368255002 2/28/2015     BETA        3.38E-02     1.88E-03    9.72E-04 AP         DOW       368255003 2/28/2015     BETA        2.83E-02     1.70E-03    9.55E-04 AP         COL       368255004 2/28/2015     BETA        3.39E-02     1.86E-03    9.58E-04 AP         ONS-1     368255005  3/1/2015     BETA        2.90E-02     1.74E-03    9.82E-04 AP         ONS-2     368255006  3/1/2015     BETA        2.84E-02     1.70E-03    9.51E-04 AP         ONS-3     368255007  3/1/2015     BETA        3.22E-02     1.84E-03    9.80E-04 AP         ONS-4     368255008  3/1/2015     BETA        2.86E-02     1.71E-03    9.52E-04 AP         ONS-5     368255009  3/1/2015     BETA        2.92E-02     1.72E-03    9.47E-04 AP         ONS-6     368255010  3/1/2015     BETA        3.23E-02     1.83E-03    9.68E-04 AP         NBF       368784001  3/7/2015     BETA        2.71E-02     1.68E-03    9.81E-04 AP         SBN       368784002  3/7/2015     BETA        2.60E-02     1.62E-03    9.58E-04 AP         DOW       368784003  3/7/2015     BETA        2.50E-02    1.61E-03     9.80E-04 AP         COL       368784004  3/7/2015     BETA        3.35E-02    1.88E-03     9.90E-04 AP         ONS-1     368784005  3/8/2015     BETA        2.64E-02     1.67E-03    9.95E-04 AP         ONS-2     368784006  3/8/2015     BETA        2.58E-02     1.64E-03    9.77E-04 AP         ONS-3     368784007  3/8/2015     BETA        2.88E-02     1.72E-03    9.71E-04 AP         ONS-4     368784008  3/8/2015     BETA        2.69E-02    1.68E-03     9.88E-04 AP         ONS-5     368784009  3/8/2015     BETA        2.85E-02    1.72E-03     9.75E-04 AP         ONS-6     368784010  3/8/2015     BETA        2.87E-02    1.74E-03     9.97E-04 AP        NBF        369215001 3/14/2015     BETA        2.36E-02     1.55E-03    9.64E-04 AP         SBN       369215002 3/14/2015     BETA        2.31E-02     1.54E-03    9.71E-04 AP         DOW       369215003 3/14/2015     BETA        2.42E-02     1.57E-03    9.57E-04 AP         COL       369215004 3/14/2015     BETA        2.25E-02    1.54E-03     9.92E-04 AP         ONS-1     369215005 3/14/2015     BETA        2.58E-02    1.65E-03     1.00E-03 AP         ONS-2     369215006 3/14/2015     BETA        2.72E-02    1.67E-03     9.64E-04 AP         ONS-3     369215007 3/15/2015     BETA        2.57E-02    1.61E-03     9.51E-04 AP         ONS-4     369215008 3/15/2015     BETA        2.65E-02     l.67E-03    9.95E-04 AP         ONS-5     369215009 3/15/2015     BETA        2.86E-02     1.72E-03    9.81E-04 AP         ONS-6     369215010 3/15/2015     BETA        2.61E-02     1.66E~03    9.95E-04 AP        NBF        369628001 3/21/2015     BETA        2.73E-02    1.69E-03     l.04E-03 AP         SBN       369628002 3/2112015     BETA        2.55E-02    1.63E-03     l.03E-03 AP         DOW       369628003 3/21/2015     BETA        2.35E-02    1.56E-03     l.03E-03 AP         COL       369628004 3/21/2015     BETA        2.64E-02     1.67E-03    l.05E-03 AP         ONS-1     369628005 3/21/2015     BETA        2.78E-02     l.72E-03    l.05E-03 AP         ONS-2     369628006 3/21/2015     BETA        2.58E-02    1.63E-03     l.02E-03 AP         ONS-3     369628007 3/22/2015     BETA        2.65E-02    1.69E-03     1.06E-03 AP         ONS-4     369628008 3/22/2015     BETA        2.66E-02     l.70E-03    1.07E-03 AP         ONS-5     369628009 3/22/2015     BETA        2.87E-02    1.73E-03     l.03E-03 AP         ONS-6     369628010 3/22/2015     BETA        2.60E-02     1.67E-03    l.06E-03 AP        NBF        370078001 3/28/2015     BETA        2.08E-02     l.49E-03    1.06E-03 AP        SBN        370078002 3/28/2015     BETA        2.00E-02    1.45E-03     1.04E-03 AP        DOW        370078003 3/28/2015     BETA        1.84E-02    1.39E-03     l.04E-03 AP         COL       370078004 3/28/2015     BETA        1.93E-02    1.43E-03     1.05Ec03 AP         ONS-1     370078005 3/28/2015     BETA        2.27E-02     l.56E-03    l.06E-03 AP         ONS-2     370078006 3/28/2015     BETA        2.09E-02     1.48E-03    l.04E-03 AP         ONS-3     370078007 3/29/2015     BETA        2.0lE-02    1.47E-03     l.07E-03 AP         ONS-4     370078008 3/29/2015     BETA        1.90E-02    1.43E-03     1.07E-03 AP         ONS-5     370078009 3/29/2015     BETA        l.92E-02    1.43E-03     l.05E-03 AP         ONS-6     370078010 3/29/2015     BETA        1.66E-02     1.33E-03    l.06E-03 D-9

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE       NUCLIDE       (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       370818001 4/4/2015     BETA         2.40E-02     1.60E-03    1.02E-03 AP         SBN       370818002 4/4/2015     BETA         2.25E-02     l.55E-03    1.03E-03 AP         DOW       370818003 4/4/2015     BETA         2.41E-02     1.60E-03    1.02E-03 AP         COL       370818004 4/4/2015     BETA         2.36E-02     1.59E-03    1.02E-03 AP         ONS-1     370818005 41512015     BETA         2.14E-02     1.52E-03    l.03E-03 AP         ONS-2     370818006 4/5/2015     BETA         2.44E-02     1.59E-03    9.91E-04 AP         ONS-3     370818007 4/5/2015     BETA         2.22E-02     l.53E-03    1.0lE-03 AP         ONS-4     370818008 4/5/2015     BETA         2.lOE-02     1.50E-03    1.02E-03 AP         ONS-5     370818009 4/5/2015     BETA         2.44E-02     1.61E-03    1.0lE-03 AP         ONS-6     370818010 4/5/2015     BETA         2.23E-02     1.54E-03    1.02E-03 AP         NBF       371275001 4/15/2015    BETA         2.89E-02     1.76E-03    1.02E-03 AP         SBN       371275002 4/15/2015    BETA         2.73E-02     1.73E-03    1.04E-03 AP         DOW       371275003 4/15/2015    BETA         1.99E-02     1.47E-03    1.03E-03
* AP         COL       371275004 4/15/2015    BETA         2.12E-02     1.51E-03    l.02E-03 AP         ONS-1     371275005 4/15/2015    BETA         2.50E-02     l.65E-03    l.04E-03 AP         ONS-2     371275006 4/15/2015    BETA         2.19E-02     l.52E-03    9.98E-04 AP         ONS-3     371275007 4/15/2015    BETA         2.27E-02     1.49E-03    9.35E-04 AP         ONS-4     371275008 4/15/2015    BETA         2.46E-02     1.62E-03    1.0lE-03 AP         ONS-5     371275009 4/15/2015 '  BETA         1.96E-02     1.45E-03    1.02E-03 AP         ONS-6     371275010 4/15/2015    BETA         2.63E-02     1.69E-03    1.03E-03 AP         NBF       371765001 4/22/2015    BETA         2.06E-02     l.52E-03    l.14E-03 AP         SBN       371765002 4/22/2015    BETA         l.85E-02     1.45E-03    l.16E-03 AP         DOW       371765003 4/22/2015    BETA         1.91E-02     1.47E-03    1.16E-03 AP         COL       371765004 4/22/2015    BETA         1.73E-02     l.36E-03    1.0SE-03 AP         ONS-1     371765005 4/22/2015    BETA         2.02E-02     l.54E-03    l.19E-03 AP         ONS-2     371765006 4/22/2015    BETA         l.97E-02     1.48E-03    l.13E-03 AP         ONS-3     371765007 4/22/2015    BETA         2.00E-02     l.47E-03    l.lOE-03 AP         ONS-4     371765008 4/22/2015    BETA         l.78E-02     l.39E-03    1.1 lE-03 AP         ONS-5     371765009 4/22/2015    BETA         l.93E-02     1.47E-03    1.15E-03 AP         ONS-6     371765010 4/22/2015    BETA         1.92E-02     1.47E-03    1.14E-03 AP         NBF       372180001 4/29/2015    BETA         2.06E-02     1.48E-03    9.74E-04
 *AP         SBN       372180002 4/29/2015    BETA         l.69E-02
* l.35E-03    9.79E-04 AP         DOW       372180003 4/29/2015    BETA         1.59E-02     1.31E-03    9.87E-04 AP         COL       372180004 4/29/2015    BETA         1.60E-02     l.32E-03    9.94E-04 AP         ONS-1     372180005 4/29/2015    BETA         1.88E-02     l.43E-03    9.96E-04 AP         ONS-2     372180006 4/29/2015    BETA         1.77E-02     l.38E-03    9.72E-04 AP         ONS-3     372180007 4/29/2015    BETA         1.66E-02     l.31E-03    9.48E-04 AP         ONS-4     372180008 4/29/2015    BETA         1.56E-02     1.28E-03    9.51E-04 AP         ONS-5     372180009 4/29/2015    BETA         1.84E-02     1.41E-03'   9.78E-04 AP         ONS-6     372180010 4/29/2015    BETA         1.75E-02     l.37E-03    9.77E-04 AP         NBF       372743001  51612015    BETA         2.14E-02     1.53E-03    1.05E-03 AP         SBN       372743002  51612015    BETA         2.44E-02     1.63E-03    1.04E-03 AP         DOW       372743003  5/6/2015    BETA         2.06E-02     l.46E-03    9.87E-04 AP         COL       372743004  5/6/2015    BETA         1.92E-02     1.39E-03    9.53E-04 AP         ONS-l     372743005  5/6/2015    BETA         2.13E-02     1.48E-03    9.78E-04 AP         ONS-2     372743006  5/6/2015    BETA         2.lOE-02     l.48E-03    9.92E-04 AP         ONS-3     372743007  5/6/2015    BETA         1.91E-02     1.40E-03    9.78E-04 AP         ONS-4     372743008  51612015    BETA         1.71E-02     1.36E-03    1.02E-03 AP         ONS-5     372743009  5/6/2015    BETA         2.22E-02     l.50E-03    9.70E-04 AP         O!'JS-6   372743010  5/6/2015     BETA        2.16E-02     1.49E-03    9.83E-04 D-10

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        NBF        373202001 5/13/2015     BETA        1.83&#xa3;-02     l.37E-03    9.00E-04 AP         SBN       373202002 5/13/2015     BETA        2.0lE-02     1.44&#xa3;-03    9.05&#xa3;-04 AP         DOW       373202003 5/13/2015     BETA        2.0lE-02     1.43E-03    9.0lE-04 AP         COL       373202004 5/13/2015     BETA        1.86E-02     1.37&#xa3;-03    8.84&#xa3;-04 AP         ONS-1     373202005 5/13/2015     BETA        l.50E-02     1.24&#xa3;-03    8.95E-04 AP         ONS-2     373202006 5/13/2015     BETA        1.55E-02     l.25E-03    8.85E-04 AP         ONS-3     373202007 5/13/2015     BETA        l.68E-02     1.32E-03    9.03E-04 AP         ONS-4     373202008 5/13/2015     BETA        l.75E-02     1.35E-03    9.llE-04 AP         ONS-5     373202009 5/13/2015     BETA        l.78E-02     l.33E-03    8.72E-04 AP         ONS-6     373202010 5/13/2015     BETA        l.60E-02     l.29E-03    9.lOE-04 AP        NBF        373655001 5/20/2015     BETA        1.75E-02     l.36E-03    l.03E-03 AP         SBN       373655002 5/20/2015     BETA        1.40E-02     1.23E-03    1.06E-03 AP         DOW       373655003 5/20/2015     BETA        1.73&#xa3;-02     l.36E-03    l.05E-03 AP         COL       373655004 5/20/2015     BETA        l.91E-02     l.39E-03    9.99E-04 AP         ONS-1     373655005 5/20/2015     BETA        1.52&#xa3;-02     l.27E-03    1.03E-03 AP         ONS-2     373655006 5/20/2015     BETA        l.93E-02     1.42E-03    1.02E-03 AP         ONS-3     373655007 5/20/2015     BETA        1.83&#xa3;-02     l.40E-03    1.05&#xa3;-03 AP         ONS-4     373655008 5/20/2015     BETA        1.79&#xa3;-02     l.36E-03    1.02E-03 AP         ONS-5     373655009 5/20/2015     BETA        2.35&#xa3;-02     1.57E-03    l.05E-03 AP         ONS-6     373655010 5/20/2015     BETA        1.87&#xa3;-02     l.39E-03    1.03&#xa3;-03 AP        NBF        383110001 7/1/2015      Ac-228     -2.42&#xa3;-04    3.99&#xa3;-04     1.26E-03 u AP        NBF        383110001 7/1/2015    Ag-108m      -1.39&#xa3;-04    8.25&#xa3;-05     2.15E-04 u AP         NBF       383110001 7/1/2015    Ag-llOm      -9.47&#xa3;-05     1.60&#xa3;-04    4.86E-04 u AP        NBF        383110001 7/1/2015      Ba-140     -2.73E+OO    l.25E+OO     O.OOE+OO u AP        NBF        383110001 7/1/2015       Be-7       l.21E-01     1.23&#xa3;-02    l.71E-02 AP        NBF        383110001 7/1/2015      Ce-141      4.98&#xa3;-04    2.13E-03     7.22&#xa3;-03 u AP        NBF        383110001 7/1/2015      Ce-144      3.30E-04    5.40E-04     l.85E-03 u AP        NBF        383110001 7/1/2015      Co-57       7.55&#xa3;-05    7.49E-05     2.45E-04 u AP        NBF        383110001 7/1/2015      Co-58      -4.05&#xa3;-04    3.89E-04     1.12&#xa3;-03 u AP        NBF        383110001 7/1/2015      Co-60      -5.42&#xa3;-06     1.13&#xa3;-04    3.77E-04 u AP         NBF       383110001 7/1/2015       Cr-51      1.87&#xa3;-02    2.55&#xa3;-02     8.55E-02 u AP        NBF      ' 383110001 7/1/2015      Cs-134     -1.22&#xa3;-04     1.29&#xa3;-04    3.79E-04 u AP         NBF       383110001 7/1/2015      Cs-137      7.21E-05    9.78E-05     3.38E-04 u AP         NBF       383110001 7/1/2015       Fe-59     -l.58E-03    2.08E-03     6.13&#xa3;-03 u AP         NBF       383110001  7/1/2015      I-131     -2.87E+Ol    3.05E+Ol     O.OOE+OO u AP        NBF        383110001 7/1/2015       K-40       6.02&#xa3;-03     1.73&#xa3;-03    4.16E-03 AP        NBF        383110001 7/1/2015      La-140      1.43&#xa3;-01    3.70&#xa3;-01     O.OOE+OO UI AP         NBF       383110001 7/1/2015      Mn-54       1.53&#xa3;-04     1.55&#xa3;-04    5.32E-04 u AP        NBF        383110001 7/1/2015      Nb-95       3.24&#xa3;-04    4.79&#xa3;-04     1.65E-03 u AP         NBF       383110001 7/1/2015      Ru-103      l.41E-05     l.05E-03    3.37&#xa3;-03 u AP         NBF       383110001 7/1/2015      Ru-106      3.16&#xa3;-04     l.06E-03    3.61E-03 u AP         NBF       383110001  7/1/2015     Sb-124     -2.89&#xa3;-04     l.36E-03    4.37&#xa3;-03 u AP         NBF       383110001  7/1/2015     Sb-125     -4.28&#xa3;-04    2.77&#xa3;-04     7.34E-04 u AP         NBF       383110001  711/2015      Se-75     -1.87&#xa3;-04    2.25E-04     7.0lE-04 u AP         NBF       383110001  7/1/2015     Th-228      1.26&#xa3;-04     1.89&#xa3;-04    5.05E-04 u AP         NBF       383110001  7/1/2015     Zn-65       5.42&#xa3;-05    2.46&#xa3;-04     7.20E-04 u AP         NBF       383110001 7/1/2015       Zr-95'     l.77E~03    8.97&#xa3;-04     3.06&#xa3;-03 u AP         SBN       383110002 7/1/2015      Ac-228      8.46&#xa3;-05    3.16E-04     1.56&#xa3;-03 u AP         SBN       383110002 7/1/2015     Ag-108m      2.02&#xa3;-05    7.53E-05     2.56E-04 u AP         SBN       383110002  7/1/2015   Ag-llOm      -2.06&#xa3;-05    2.08E-04     6.86E-04 u D-11

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 20*15 SAMPLE                              END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN       DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         SBN       383110002   7/112015    Ba-140       -9.26E-01   l.llE+OO     O.OOE+OO u AP         SBN       383110002   7/112015     Be-7         l.19E-01    1.30E-02    1.59E-02 AP         SBN       383110002   7/112015    Ce-141        l.61E-04   2.66E-03     8.38E-03 u AP         SBN       383110002   7/112015    Ce-144       -1.00E-03   6.27E-04     l.84E-03 u AP         SBN       383110002   7/1/2015    Co-57        -1.75E-04   8.66E-05     2.29E-04 u AP         SBN       383110002   711/2015     Co-58       -1.91E-04   4.08E-04     1.31E-03 u AP         SJ3N      383110002   711/2015    Co-60        -8.17E-05    1.35E-04    4.20E-04 u AP         SBN       ~83110002   711/2015     Cr-51       -1.28E-02   3.25E-02     8.85E-02 u AP         SBN       383110002   711/2015    Cs-134
* 2.06E-04     1.27E-04    4.45E-04 u AP         SBN       383110002   7/1/2015    Cs-137        3.23E-05   9.53E-05     2.79E-04 u AP         SBN       383110002   7/112015     Fe-59       -1.48E-03    1.97E-03    4.66E-03 u AP         SBN       383110002   7/112015     I-131       4.60E+Ol    3.63E+Ol     O.OOE+OO UI AP         SBN       383110002   7/112015     K-40         1.39E-03    1.06E-03    2.94E-03 u AP         SBN       383110002   7/1/2015    La-140        2.02E-02   4.31E-01     O.OOE+OO UI AP         SBN       383110002   711/2015    Mn-54        -4.29E-05    1.37E-04    4.46E-04 u AP         SBN       383110002   711/2015    Nb-95        -6.85E-04   4.60E-04     1.16E-03 u AP         SBN       383110002   711/2015    Ru-103       -1.54E-03    1.06E-03    2.91E-03 u AP         SBN       383110002   7/1/2015    Ru-106       -2.03E-03    l.23E-03    2.89E-03 u AP         SBN       383.110002  7/112015    Sb-124       -1.21E-03    1.45E-03    4.14E-03 u AP         SBN       383110002   7/112015    Sb-125       -1.09E-04   2.50E-04     8.13E-04 u AP         SBN       383110002   7/112015     Se-75       -6.30E-04   3.03E-04     6.79E-04 u AP         SBN       383110002   7/1/2015    Th-228        4.30E-04   3.28E-04     5.85E-04 u AP         SBN       383110002   7/1/2015    Zn-65        -3.13E-04   3.79E-04     1.12E-03 u AP         SBN       383110002   7/1/2015     Zr-95       5.59E-04    8.38E-04     2.82E-03 u AP         DOW       383110003   7/112015    Ac-228        7.43E-04   3.95E-04     l.19E-03 u AP         DOW       383110003   7/112015   Ag-108m       -2.06E-05   6.00E-05     1.95E-04 u AP         DOW.      383110003   7/112015   Ag-llOm        2.76E-04    1.28E-04  , 4.60E-04 u AP         DOW       383110003   7/112015    Ba-140      -1.05E+OO    8.79E-01     O.OOE+OO u AP         DOW       383110003   711/2015     Be-7         l.12E-01    1.1 IE-02   l.12E-02 AP         DOW       383110003   7/1/2015    Ce-141       4.12E-03    3.40E-03     5.3 lE-03 u AP         DOW       383110003   711/2015    Ce-144       6.22E-05
* 4.23E-04     l.43E-03 u AP         DOW       383110003 - 7/112015    Co-57        -6.46E-05   5.80E-05     1.79,E-04 u AP         DOW       383110003   711/2015    Co-58         3.99E-04   3.29E-04     l.16E-03 u AP         DOW       383110003   7/112015    Co-60         3.25E-05   9.90E-05     3.42E-04 u
\   AP         DOW       383110003   7/1/2015     Cr-51        6.41E-03    1.90E-02    6.58E-02 u AP         DOW       383110003   7/1/2015    Cs-134        3.18E-04    1.39E-04    4.35E-04 u AP         DOW       383110003   7/112015    Cs-137      -7.87E-05     1.05E-04    2.64E-04 u AP         DOW       383110003   7/112015     Fe-59        2.49E-03    1.94E-03    6.74E-03 u AP         DOW       383110003   7/112015     I-131      -1.llE+Ol    2.50E+Ol     O.OOE+OO u AP         DOW       383110003   711/2015     K-40         4.13E-03    1.49E-03    3.12E-03 UI AP         DOW       383110003   7/1/2015    La-140       -3.41E-01   2.80E-01     O.OOE+OO u AP         DOW       383110003   7/1/2015    Mn-54         l.79E-05    1.09E-04    3.24E-04 u AP         DOW       383110003   7/1/2015    Nb-95         3.71E-04   3.75E-04     l.30E-03 u AP         DOW       383110003   7/112015    Ru-103        6.92E-04   9.51E-04     2.91E-03 u AP         DOW       383110003   7/112015    Ru-106        8.82E-05   9.82E-04     3.20E-03 u AP         DOW       383110003   711/2015    Sb-124        1.58E-03    1.03E-03    3.91E-03 u AP         DOW       383110003   7/1/2015    Sb-125      -7.79E-05    2.02E-04     6.53E-04 u AP         DOW       383110003   7/1/2015     Se-75        2.52E-05    1.98E-04    6.41E-04 u AP         DOW       383110003   7/112015    Th-228        2.12E-04    l.88E-04    4.31E-04 u AP         DOW       383110003   7/112015    Zn-65        -3.92E-04   2.97E-04     7.73E-04 u D-12

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION     . LSN      DATE       NUCLIDE        (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         DOW        383110003 7/1/2015      Zr-95       1.67E-04   6.18E-04     2.12E-03  u AP         COL        383110004 711/2015     Ac-228      6.13E-04    3.99E-04     1.48E-03  u AP         COL        383110004 711/2015    Ag-108m     -2.71E-06    6.59E-05     2.17E-04  u AP         COL        383110004 7/112015    Ag-llOm      4.12E-05     1.89E-04    6.45E-04  u AP         COL        383110004 7/112015     Ba-140     -1.22E+OO    r.01E+oo     O.OOE+OO  u AP         COL        383110004 7/112015      Be-7        l.03E-01    l.12E-02    l.62E-02 AP         COL        383110004 7/112015     Ce-141       l.73E-03   2.30E-03     7.52E-03  u AP         COL        383110004 7/1/2015     Ce-144      4.25E-04    5.96E-04     1.95E-03  u AP         COL        383110004 7/1/2015     Co-57       3.93E-05    7.62E-05     2.49E-04  u AP         COL        383110004 7/1/2015     Co-58        1.93E-04   4.32E-04     1.26E-03 u AP         COL        383110004 7/1/2015     Co-60       2.75E-06     l.OSE-04    3.56E-04  u AP         COL        383110004 7/1/2015      Cr-51       l.62E-03   2.58E-02     8.62E-02  u AP         COL        383110004 7/1/2015     Cs-134      2.85E-05     l.40E-04    3.76E-04  u AP         COL        383110004 7/112015     Cs-137     -7.64E-05     1.0IE-04    3.05E-04  u AP         COL        383110004 7/112015      Fe-59      2.47E-03     1.73E-03    6.20E-03  u AP         COL        383110004 7/1/2015      I-131      6.25E+OO    3.17E+Ol     O.OOE+OO UI AP         COL        383110004 7/1/2015      K-40      -8.SIE-04     l.44E-03    4.38E-03  u AP         COL        383110004 7/1/2015     La-140     -4.21E-01    4.26E-01     O.OOE+OO  u AP         COL        383110004 7/1/2015     Mn-54      -l.56E-04     l.32E-04    3.87E-04  u AP         COL        383110004 7/1/2015     Nb-95      -2.56E-04    5.33E-04     1.39E-03  u AP         COL        383110004 7/1/2015     Ru-103       l.47E-03    ld4E-03     3.18E-03  u AP         COL        383110004 7/112015     Ru-106      7.36E-04     1.02E-03    3.44E-03  u AP         COL        383110004 711/2015     Sb-124     *2.98E-04     1.22E-03    4.llE-03  u AP         COL        383110004 7/1/2015     Sb-125     -3.52E-04    2.30E-04     6.26E-04  u AP         COL        383110004 7/112015      Se-75      2.02E-04    2.13E-04     7.27E-04  u AP         COL        383110004 7/1/2015     Th-228      2.0SE-04     1.65E-04    4.24E-04  u AP         COL        383110004 7/112015     Zn-65       4.59E-06    3.31E-04     1.IOE-03  u AP         COL        383110004 7/1/2015      Zr-95     -6.75E-04    8.04E-04     2.36E-03  u AP         ONS-1      383110005 7/1/2015     Ac-228       l.33E-03   5.99E-04     1.37E-03  u AP         ONS-1      383110005 7/1/2015    Ag-108m     -1.39E-05    5.99E-05     1.94E.:04 u AP         ONS-1      383110005 7/1/2015    Ag-llOm      3.64E-04     l.93E-04    5.85E-04  u AP         ONS-1    . 383110005 711/2015     Ba-140     -l.07E+OO    9.95E-Ol     O.OOE+OO  u AP         ONS-1      383110005 7/1/2015      Be-7        l.l IE-01  9.75E-03     l.33E-02 AP         ONS-1      383110005 7/1/2015     Ce-141      2.30E-04    2.27E-03     6.45E-03  u AP         ONS-1      383110005 7/1/2015     Ce-144      -2.59E-04   5.0IE-04     l.56E-03  u AP         ONS-1      383110005 7/1/2015 '   Co-57      -5.87E-05    6.57E-05     2.00E-04  u AP         ONS-1      383110005 7/1/2015     Co-58      -3.53E-04    3.59E-04     l.06E-03  u AP         ONS-1      383110005 7/1/2015     Co-60      -7.04E-05    9.98E-05     3.07E-04 u AP         ONS-1      383110005 7/1/2015      Cr-51       l.51E-02   2.48E-02     8.04E-02  u AP         ONS-1      383110005 7/112015     Cs-134     -l.39E-04     l.13E-04    3.22E-04  u AP         ONS-1      383110005 7/1/2015     Cs-137       l.IIE-04   9.75E-05     3.0IE-04  u AP         ONS-1      383110005 7/1/2015      Fe-59       l.43E-03    l.94E-03    4.92E-03  u AP         ONS-1      383110005 7/1/2015      I-131     -2.37E+OO    2.56E+Ol     O.OOE+OO  u AP         ONS-1      383110005 7/1/2015      K-40        l.OSE-03    l.40E-03    3.05E-03  u AP         ONS-1      383110005 7/1/2015     La-140       l.58E-01    3. llE-01   0.00E+OO UI AP         ONS-1      383110005 7/1/2015     Mn-54       -3.25E-05    1.19E-04    3.94E-04 U AP         ONS-1      383110005 7/1/2015     Nb-95       4.97E-04    4.29E-04     l.27E-03  u AP         ONS-1      383110005 711/2015     Ru-103     -9.27E-04     l.13E-03    2.9IE-03  u AP         ONS-1      383110005 7/112015     Ru-106       l.09E-03   9.99E-04     3.37E-03  u AP         ONS-1      383110005 7/1/2015     Sb-124      -1.34E-03    l.09E-03    3.00E-03  u D-13

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION*      LSN       DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        ONS-1      383110005   7/1/2015    Sb-125      -4.80E-05    2.lOE-04     6.82E-04 u AP        ONS-1      383110005   7/1/2015     Se-75      -l.45E-04    2.llE-04     6.59E-04 u AP        ONS-1      383110005   7/112015    Th-228       4.26E-04     l.63E-04    3.64E-04 AP        ONS-1      383110005   7/112015     Zn-65      -3.58E-04    3.55E-04     l.05E-03 u AP        ONS-1      383110005   7/1/2015     Zr-95       l.75E-03    7.71E-04     2.45E-03 u AP        ONS-2      383110006   7/1/2015    Ac-228       3.43E-04    3.83E-04     l.20E-03 u AP        ONS-2      383110006   7/1/2015   Ag-108m       l.41E-05    5.21E-05     l.70E-04 u AP.       ONS-2      383110006   7/1/2015   Ag-llOm       l.98E-05     l.45E-04    4.79E-04 u AP        ONS-2      383110006   7/1/2015    Ba-140      -l.34E-02    6.l lE-01    O.OOE+OO u AP        ONS-2      383110006   7/1/2015     Be-7        l.19E-Ol     l.07E-02    l.06E-02 AP        ONS-2      383110006   7/112015    Ce-141      -2.52E-03     l.99E-03    5.81E-03 u AP        ONS-2      383110006   7/1/2015    ce-144      -5.29E-04    4.32E-04     l.32E-03 u AP        ONS-2      383110006   7/1/2015    Co-57        2.56E-05    5.15E-05     l.76E-04 u AP        ONS-2      383110006   7/112015    Co-58       -l.03E-04    3.05E-04     9.34E-04 u AP        ONS-2      383110006   7/1/2015    Co-60        9.20E-05    8.59E-05     3.09E-04 u AP        ONS-2      383110006   7/1/2015     Cr-51       l.75E-02    2.07E-02     6.88E-02 u AP        ONS-2      383110006   7/1/2015    Cs-134      -8.45E-05    9.44E-,05    2.27E-04 u AP        ONS-2      383110006   7/1/2015    Cs-137       9.14E-05    8.IOE-05     2.73E-04 u AP        ONS-2      383110006   7/1/2015     Fe-59      -2.79E-04     l.26E-03    4.12E-03 u AP        ONS-2      38311000.6  7/1/2015     I-131      -1.IOE+Ol    2.36E+Ol     O.OOE+OO u AP        ONS-2      383110006   7/1/2015     K-40        3.16E-03     l.35E-03    l.96E-03 UI AP        ONS-2      383110006   7/1/2015    La-140       4.15E-02    2.75E-Ol     O.OOE+OO UI AP        ONS-2      383110006   7/1/2015    Mn-54       -l.77E-05    7.82E-05     2.49E-04 U AP        ONS-2      383110006   7/1/2015    Nb-95        5.40E-06    3.28E-04     l.08E-03 u AP        ONS-2      383110006   7/1/2015    Ru-103       l.87E-06    7.61E-04     2.56E-03 u AP        ONS-2      383110006  '7/1/2015    Ru-106      -3.34E-04    8.40E-04     2.71E-03 u AP        ONS-2      383110006   7/1/2015    Sb-124       l.22E-06    9.33E-04     3.05E-03 u AP        ONS-2      383110006   7/1/2015    Sb-125       2.23E-04     l.85E-04    6.15E-04 U AP        ONS-2      383110006   7/1/2015     Se-75       l.98E-06     l.61E-04    5.30E-04 U AP        ONS-2      383110006   7/1/2015    Th-228       l.29E-05     l.23E-04    3.60E-04 U AP        ONS-2      383110006   7/1/2015    Zn-65        5.80E-04    2.70E-04     9.06E-04 U AP        ONS-2      383110006   7/1/2015     Zr-95       3.70E-04    5.82E-04     l.99E-03 u AP        ONS-3      383110007   7/1/2015    Ac-228       l.02E-03    6.llE-04     l.24E-03 u AP        ONS-3      383110007   7/1/2015   Ag-108m       4.89E-05    6.77E-05     l.99E-04 u AP        ONS-3      383110007   7/1/2015   Ag-lJOm      -2.15E-05     1.54E-04    4.96E-04 u AP        ONS-3      383110007   7/1/2015    Ba-140       5.54E-03    8.92E-Ol     O.OOE+OO UI AP        ONS-3      383110007   7/1/2015     Be-7        l.18E-Ol     l.03E-02    l.23E-02 AP        ONS-3      383110007   7/1/2015    Ce-141       3.47E-03    2.43E-03     6.93E-03 u AP        ONS-3      383110007   7/1/2015    Ce-144      -2.44E-04    5.26E-04     l.67E-03 u AP        ONS-3      383110007   7/1/2015    Co-57       -2.97E-05    6.55E-05     2.09E-04 u AP        ONS-3      383110007   7/1/2015    Co-58        3.22E-04    3.66E-04     l.08E-03 u AP        ONS-3      383110007   7/1/2015    Co-60        9.00E-05     l.15E-04    3.47E-04 u AP        ONS-3      383110007   7/1/2015     Cr-51       5.63E-03    2.33E-02     7.60E-02 u AP        ONS-3      383110007   7/1/2015    Cs-134      -l.24E-05     l.19E-04    3.29E-04 u AP        ONS-3      383110007   7/1/2015    Cs-137      -9.74E-05    8.76E-05     2.65E-04 u AP        ONS-3      383110007   7/1/2015     Fe-59      -3.03E-04    2.04E-03     5.05E-03 u AP        ONS-3      383110007   7/1/2015     I-131      -3.14E+Ol    2.71E+Ol     O.OOE+OO u AP        ONS-3      383110007   7/1/2015     K-40        4.21E-03     l.69E-03    4.77E-03 u AP        ONS-3      383110007   7/1/2015    La-140      -5.12E-02    2.92E-Ol     O.OOE+OO u AP        ONS-3      383110007   7/1/2015    Mn-54       -l.25E-04     l.17E-04    3.47E-04 u D-14

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN     DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-3     383110007 7/112015     Nb-95       3.0IE-04    4.58E-04     l.33E-03 u AP         ONS-3     383110007 7/1/2015    Ru-103       1.60E-03     1.05E-03    3.44E-03 u AP         ONS-3     383110007 7/112015    Ru-106       4.15E-Of    9.03E-04     3.07E-03 u AP         ONS-3     383110007 7/112015     Sb-124     -3.27E-04     l.14E-03    3.63E-03 u AP         ONS-3     383110007 7/112015     Sb-125      2.66E-04    2.13E-04     7.1 IE-04 u AP         ONS-3     383110007 7/112015      Se-75       1.56E-06   2.17E-04     7.llE-04 u AP         ONS-3     383110007 7/1/2015    Th-228       2.51E-04     1.74E-04    4.93E-04 u AP         ONS-3     383110007 7/1/2015      Zn-65     -4.91E-04    3.00E-04     8.0IE-04 u AP         ONS-3     383110007 7/1/2015      Zr-95      4.87E-04    6.73E-04     2.27E-03 u AP         ONS-4     383110008 7/1/2015     Ac-228     -1.08E-03    5.14E-04     9.15E-04 u AP         ONS-4     383110008 7/112015   Ag-108m      -8.72E-05    6.61E-05     l.93E-04 u AP         ONS-4     383110008 7/112015   Ag-llOm      -l.23E-04     l.91E-04    5.90E-04 u AP         ONS-4     383110008 7/112015    Ba-140       l.19E+OO    9.31E-01     O.OOE+OO UI AP         ONS-4     383110008 7/112015      Be-7       1.06E-01     1.05E-02    l.37E-02 AP         ONS-4     383110008 7/1/2015     Ce-141      2.44E-03    2.02E-03     4.46E-03 u AP         ONS-4     383110008 7/1/2015     Ce-144     -2.17E-04    4.12E-04     l.36E-03 u AP         ONS-4     383110008 7/112015      Co-57     -3.41E-05    5.61E-05     l.71E-04 u AP         ONS-4     383110008 7/112015      Co-58      4.96E-04    3.83E-04     l.32E-03 u AP         ONS-4     383110008 7/112015      Co-60     -9.lOE-05    9.66E-05     2.74E-04 u AP         ONS-4     383110008 7/1/2015      Cr-51     -3.51E-02    2.42E-02     6.71E-02 u AP         ONS-4     383110008 7/1/2015     Cs-134      1.76E-04     1.08E-04    3.75E-04 u AP         ONS-4     383110008 7/1/2015     Cs-137     -5.28E-05    9.16E-05     2.80E-04 u AP         ONS-4     383110008 7/1/2015      Fe-59     -1.22E-04     l.56E-03    5.00E-03 u AP        ONS-4      383110008 7/1/2015      1-131     6.14E+OO     2.69E+Ol     O.OOE+OO UI AP        ONS-4      383110008 7/1/2015      K-40       l.19E-03    1.44E-03     5.1 IE-03 u AP        ONS-4      383110008 7/112015     La-140     -1.66E-01    3.27E-01     O.OOE+OO u AP         ONS-4     383110008 7/1/2015     Mn-54      -8.83E-05     1.28E~04    3.96E-04 u AP         ONS-4     383110008 7/1/2015     Nb-95       5.48E-04    4.96E-04     l.37E-03 u AP         ONS-4     383110008 7/112015    Ru-103      -4.38E-04     1.08E-03    2.94E-03 u AP        ONS-4      383110008 7/112015    Ru-106      -1.06E-03    1.0IE-03     2.92E-03 u AP        ONS-4      383110008 7/112015     Sb-124      4.38E-04     l.17E-03    4.07E-03 u AP        ONS-4      383110008 7/1/2015     Sb-125      1.56E-04    2.14E-04     7.29E-04 u AP        ONS-4      383110008 711/2015      Se-75     -2.03E-05     l.96E-04    6.l IE-04 u AP         ONS-4     383110008 7/1/2015    Th-228       2.51E-04     l.97E-04    3.97E-04 u AP         ONS-4     383110008 7/1/2015      Zn-65     -3.26E-04    3.43E-04     9.84E-04 u AP        ONS-4      383110008 7/112015      Zr-95      1.53E-04    7.llE-04     2.09E-03 u AP        ONS-5      383110009 7/1/2015    Ac-228      -1.01E"04    3.89E-04     1.27E-03 u AP        ONS-5      383110009 7/1/2015   Ag-108m      -4.82E-05    6.36E-05   . l.90E-04 u AP        ONS-5      383110009 7/112015   Ag-llOm      -2.31E-04     l.98E-04    5.52E-04 u AP         ONS-5     383110009 7/1/2015    Ba-140       3.27E-01    8.72E-01     O.OOE+OO UI AP        ONS-5      383110009 7/1/2015      Be-7       1.14E-01     l.16E-02    1.51E-02 AP        ONS-5      383110009 7/112015    Ce-141       4.66E-04    2.22E-03     7.26E-03 u AP        ONS-5      383110009 7/112015    Ce-144      -1.64E-05    4.74E-04     l.61E-03 u AP        ONS-5      383110009 7/1/2015      Co-57     -3.91E-05    6.51E-05     l.99E-04 u AP        ONS-5      383110009 7/1/2015      Co-58     -1.l IE-04   3.63E-04     1.15E-03 u AP         ONS-5     383110009 7/1/2015      Co-60     -l.58E-05    9.54E-05     3.07E-04 u AP        ONS-5      383110009 7/1/2015      Cr-51      3.79E-02    2.36E-02     7.99E-02 u AP        ONS-5      383110009 7/1/2015     Cs-134     -1.40E-04    1.07E-04     2.89E-04 u AP        ONS-5      383110009 7/112015     CS-137      6.26E-05    1.22E-04     2.56E-04 u AP        ONS-5      383110009 7/1/2015
* Fe-59      9.67E-04    1.26E-03     4.49E-03 u D-15

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-5     383110009  7/112015     I-131      7.05E+OO     2.83E+OI     O.OOE+OO UI AP         ONS-5     383110009  7/112015     K-40        2.90E-03     l.23E-03    3.27E-03 u AP         ONS-5     383110009  7/1/2015    La-140       6.05E-OI    3.44E-OI     O.OOE+OO UI AP         ONS-5     383110009  7/112015    Mn-54       -l.02E-04     1.24E-04    3.68E-04 u AP         ONS-5     383110009  7/112015    Nb-95        5.15E-04    4.22E-04     1.44E-03 u AP         ONS-5     383110009  7/1/2015    Ru-103       8.39E-04     l.02E-03    3.50E-03 u AP         ONS-5     383110009  7/1/2015    Ru-106      -5.47E-04     l.04E-03    3.30E-03 u AP         ONS-5     383110009  7/1/2015    Sb-124       l.66E-04     1.13E-03    3.84E-03 u AP         ONS-5     383110009  7/1/2015    Sb-125       1.57E-05    2.38E-04     7.65E-04 u AP         ONS-5     383110009  7/112015     Se-75      -4.12E-05    2.25E-04     6.43E-04 u AP         ONS-5     383110009  7/112015    Th-228       3.06E-04    2.0SE-04     4.89E-04 u AP         ONS-5     383110009  7/1/2015    Zn-65        3.20E-04    2.39E-04     8.05E-04 u AP         ONS-5     383110009 7/1/2015      Zr-95      -7.93E-04    6.76E-04     l.89E-03 u AP         ONS-6     383110010 7/1/2015     Ac-228      -1.55E-04    3.38E-04     1.12E-03 u AP         ONS-6     383110010 7/1/2015    Ag-108m      -3.75E-06    6.40E-05     2.llE-04 u AP         ONS-6     383110010 7/1/2015    Ag-1 lOm     -2.19E-04    1.75E-04     5.00E-04 u AP         ONS-6     383110010 7/1/2015     Ba-140       9.62E-OI    8.91E-OI     O.OOE+OO UI AP         ONS-6     383110010 7/1/2015      Be-7        1.IOE-01     1.12E-02    l.46E-02 AP         ONS-6     383110010 7/1/2015     Ce-141       2.IOE-03    2.37E-03     7.0IE-03 u AP         ONS-6     383110010 7/1/2015     Ce-144      -3.04E-04    4.73E-04     l.48E-03 u AP         ONS-6     383110010 711/2015     Co-57       -7.79E-05    6.59E-05     l.96E-04 u AP         ONS-6     383110010  7/1/2015    Co-58       -4.05E-04    3.63E-04     l.09E-03 u AP         ONS-6     383110010  7/1/2015    Co-60       -l.OIE-04    9.56E-05     2.61E-04 u AP         ONS-6     383110010 7/1/2015      Cr-51       l.OOE-02    2.38E-02     8.0SE-02 u AP         ONS-6     383110010 7/1/2015     Cs-134       2.84E-04    2.35E-04     3.03E-04 u AP         ONS-6     383110010 7/1/2015     Cs-137      -4.04E-05    6.99E-05     2.12E-04 u AP         ONS-6     383110010 7/1/2015      Fe-59       8.63E-05     l.OSE-03    3.61E-03 u AP         ONS-6     383110010 7/1/2015      I-131      6.20E+OI     3.08E+OI     O.OOE+OO UI AP         ONS-6     383110010 7/1/2015      K-40        l.46E-03     l.63E-03    2.73E-03 u AP         ONS-6     383110010 7/112015     La-140      -7.86E-OI    3.43E-OI     O.OOE+OO u AP         ONS-6     383110010 7/1/2015     Mn-54       -3.67E-05    9.26E-05     2.99E-04 u AP         ONS-6     383110010 7/1/2015     Nb-95        5.44E-04    6.09E-04     l.ISE-03 u AP         ONS-6     383110010 7/1/2015     Ru-103      -7.27E-04    9.28E-04     2.84E-03 u AP         ONS-6     383110010 7/1/2015     Ru-106       8.95E-04    9.65E-04     3.23E-03 u AP         ONS-6     383110010 7/1/2015     Sb-124       4.70E-04    9.76E-04     3.44E-03 u AP         ONS-6     383110010 7/1/2015     Sb-125       6.86E-05    2.02E-04     6.79E-04 u AP         ONS-6     383110010 7/1/2015      Se-75       l.77E-04    2.04E-04     6.99E-04 u AP         ONS-6     383110010 7/1/2015     Th-228       3.02E-04    1.86E-04     4.92E-04 u AP         ONS-6     383110010 7/1/2015     Zn-65       -2.17E-04    2.68E-04     7.99E-04 u AP         ONS-6     383110010 7/1/2015      Zr-95      -3.64E-04    7.14E-04     2.04E-03 u AP        NBF        374058001 5/27/2015    BETA         2.47E-02     l.62E-03    9.78E-04 AP         SBN       374058002 5/27/2015    BETA         2.48E-02     l.62E-03    9.83E-04 AP        DOW        374058003 5/27/2015    BETA         2.26E-02     l.54E-03    9.76E-04 AP         COL       374058004 5/27/2015    BETA         2.52E-02     l.61E-03    9.58E-04 AP         ONS-1     374058005 5/27/2015    BETA         2.34E-02     l.55E-03    9.48E-04 AP         ONS-2     374058006 5/27/2015    BETA         2.83E-02     1.73E-03    9.78E-04 AP         ONS-3     374058007 5/27/2015    BETA         2.51E-02     l.62E-03    9.65E-04 AP         ONS-4     374058008 5/27/2015    BETA         2.64E-02     1.66E-03    9.65E-04 AP         ONS-5     374058009 5/27/2015    BETA         3.06E-02     l.79E-03    9.72E-04 AP         ONS-6     374058010 5/27/2015    BETA         2.58E-02     L63E-03     9.57E-04 D-16

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        NBF        374491001 61312015     BETA         1.88&#xa3;-02     1.40&#xa3;-03    1.02&#xa3;-03 AP         SBN       374491002 6/3/2015     BETA         1.70&#xa3;-02     l.32E-03    9.97&#xa3;-04 AP         DOW       374491003 6/3/2015     BETA         l.71E-02     1.34&#xa3;-03    1.03&#xa3;-03 AP         COL       374491004 6/3/2015     BETA         1.49&#xa3;-02     1.25&#xa3;-03    1.02&#xa3;-03 AP         ONS-1     374491005 6/3/2015     BETA         1.67&#xa3;-02     1.30&#xa3;-03    9.90&#xa3;-04 AP         ONS-2     374491006 6/3/2015     BETA         1.49&#xa3;-02     1.22&#xa3;-03    9.69&#xa3;-04 AP         ONS-3     374491007 6/3/2015     BETA         1.62&#xa3;-02     1.29&#xa3;-03    l.OOE-03 AP         ONS-4     374491008 6/3/2015     BETA         1.78&#xa3;-02     1.37&#xa3;-03    1.03&#xa3;-03 AP         ONS-5     374491009 6/3/2015     BETA         1.72&#xa3;-02     1.33&#xa3;-03    l.OIE-03 AP         ONS-6     374491010 6/3/2015     BETA         1.72&#xa3;-02     1.33&#xa3;-03    l.OIE-03 AP         NBF       374979001 6/10/2015    BETA         2.55&#xa3;-02     1.64&#xa3;-03    9.78&#xa3;-04 AP         SBN       374979002 6/10/2015    BETA         2.84&#xa3;-02     l.71E-03    l.OIE-03 AP         DOW       374979003 6/10/2015    BETA         2.98&#xa3;-02     l.77E-03    1.04&#xa3;-03 AP         COL       374979004 6/10/2015    BETA         2.31&#xa3;-02     l.5l'E-03   9.68&#xa3;-04 AP         ONS-1     374979005 6/10/2015    BETA         2.30&#xa3;-02     1.55&#xa3;-03    1.02&#xa3;-03 AP         ONS-2     374979006 6/10/2015    BETA         2.55&#xa3;-02     1.63&#xa3;-03    1.03&#xa3;-03 AP         ONS-3     314979007 6/10/2015    BETA         2.41E-02     1.56&#xa3;-03    9.89&#xa3;-04 AP         ONS-4     374979008 6/10/2015    BETA         2.87&#xa3;-02     1.74&#xa3;-03    1.04&#xa3;-03 AP         ONS-5     374979009 6/10/2015    BETA         2.72&#xa3;-02     l.67E-03    1.02&#xa3;-03 AP         ONS-6     374979010 6/10/2015    BETA         2.64&#xa3;-02     1.66&#xa3;-03    1.02&#xa3;-03 AP         NBF       375504001 6/17/2015    BETA         1.80&#xa3;-02     1.34&#xa3;-03    1.03&#xa3;-03 AP         SBN       375504002 6/17/2015    BETA         2.IOE-02     1.46&#xa3;-03    1.05&#xa3;-03 AP         DOW       375504003 6/17/2015    BETA         2.49&#xa3;-02     1.60&#xa3;-03    1.06&#xa3;-03 AP         COL       375504004 6/17/2015    BETA         2.07&#xa3;-02     1.46&#xa3;-03    1.06&#xa3;-03 AP         ONS-1     375504005 6/17/2015    BETA         l.65E-02     1.30&#xa3;-03    1.05&#xa3;-03 AP         ONS-2     375504006 6/17/2015    BETA         1.82&#xa3;-02     1.35&#xa3;-03    1.03&#xa3;-03 AP         ONS-3     375504007 6/i7/2015    BETA         l.65E-02     1.29&#xa3;-03    1.02&#xa3;-03 AP         ONS-4     375504008 6/17/2015    BETA         2.13E-02     l.51E-03    1.09&#xa3;-03 AP         ONS-5     375504009 6/17/2015    BETA         1.62&#xa3;-02     1.29&#xa3;-03    1.05&#xa3;-03 AP         ONS-6     375504010 6/17/2015    BETA         2.06&#xa3;-02     1.47&#xa3;-03    1.07&#xa3;-03 AP         NBF       375803001 6/24/2015    BETA         2.16&#xa3;-02     1.55&#xa3;-03    1.14&#xa3;-03 AP         SBN       375803002 6/24/2015    BETA         2.15Ec02     l.47E-03    1.03&#xa3;-03 AP         DOW -     375803003 6/24/2015    BETA         2.36&#xa3;-02     1.60&#xa3;-03    1.12&#xa3;-03 AP         COL       375803004 6/24/2015    BETA         2.25E-02     1.52&#xa3;-03    1.05&#xa3;-03 AP         ONS-1     375803005 6/24/2015    BETA         2.0IE-02     1.44&#xa3;-03    1.06&#xa3;-03 AP         ONS:2     375803006 6/24/2015    BETA         2.22&#xa3;-02     1.48&#xa3;-03    l.02E-03 AP         ONS-3     375803007 6/24/2015    BETA         2.42&#xa3;-02     1.63&#xa3;-03    1.12&#xa3;-03 AP         ONS-4     375803008 6/24/2015    BETA         2.25&#xa3;-02     1.56&#xa3;-03    l. llE-03 AP         ONS-5     375803009 6/24/2015    BETA         2.14&#xa3;-02     1.54&#xa3;-03    1.13&#xa3;-03 AP         ONS-6     375803010 6/24/2015    BETA         2.26&#xa3;-02     1.58&#xa3;-03    1.14&#xa3;-03 AP         NBF       376160001  7/112015    BETA         1.82&#xa3;-02     l.41E-03    1.02&#xa3;-03
 .AP         SBN       376160002  7/112015    BETA         1.98&#xa3;-02     1.43&#xa3;-03    9.63&#xa3;-04 AP         DOW       376160003  7/112015    BETA         1.66&#xa3;-02     1.31&#xa3;-03    9.71E-04 AP         COL       376160004  7/112015    BETA         1.92&#xa3;-02     1.40&#xa3;-03    9.58&#xa3;-04 AP         ONS-1     376160005  7/1/2015    BETA         2.58&#xa3;-02     1.60&#xa3;-03    9.38&#xa3;-04 AP         ONS-2     376160006  711/2015    BETA         2.63&#xa3;-02     1.63&#xa3;-03    9.48&#xa3;-04 AP         ONS-3     376160007  7/112015    BETA         2.47&#xa3;-02     l.61E-03    9.93&#xa3;-04 AP         ONS-4     376160008  7/1/2015    BETA         2.03&#xa3;-02     1.45&#xa3;-03    9.70&#xa3;-04 AP         ONS-5     376160009  7/1/2015    BETA         l.78E-02     1.37&#xa3;-03    9.84&#xa3;-04 AP         ONS-6     376160010  711/2015    BETA         2.19&#xa3;-02     1.49&#xa3;-03    9.56&#xa3;-04 D-17

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                      CONC      STD.DEV.       MDC     FLAGS TYPE      STATION       LSN        DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       376892001    7/8/2015    BETA         l.90E-02     l.45E-03    1.07E-03 AP         SBN       376892002    7/8/2015    BETA         2.32E-02     l.54E-03    9.93E-04 AP         DOW       376892003    7/8/2015    BETA         2.42E-02     l.62E-03    l.05E-03 AP         COL       376892004    7/8/2015    BETA         2.16E-02     1.54E-03    l.06E-03 AP         ONS-1     376892005    7/8/2015    BETA         1.94E-02     1.46E-03    l.06E-03 AP         ONS-2     376892006    7/8/2015    BETA         2.29E-02     1.53E-03    9.95E-04 AP         ONS-3     376892007    7/8/2015    BETA         2.28E-02     l.54E-03    1.0lE-03 AP         ONS-4     376892008    7/8/2015    BETA         2.16E-02     1.51E-03  . 1.02E-03 AP         ONS-5     376892009    7/8/2015    BETA         2.23E-02     1.47E-03    9.46E-04 AP         ONS-6     376892010    7/8/2015. BETA         2.56E-02     l.63E-03    1.0lE-03 AP         NBF       377426001   7/15/2015    BETA         2.06E-02     l.48E-03    9.40E-04 AP         SBN       377426002   7/15/2015    BETA         2.07E-02     1.46E-03    9.05E-04 AP         DOW       377426003   7/15/2015    BETA         l.79E-02     l.40E-03    9.63E-04 AP         COL       377426004   7/15/2015    BETA         2.18E-02     l.50E-03    9.09E-04 AP         ONS-1     377426005   7/15/2015    BETA         2.16E-02     l.49E-03    9.12E-04 AP         ONS-2     377426006   7115/2015    BETA         2.45E-02     l.59E-03    9.lOE-04 AP         ONS-3     377426007   7/15/2015    BETA         2.23E-02     l.51E-03    9.00E-04 AP         ONS-4     377426008   7/15/2015    BETA         l.99E-02     1.45E-03    9.29E-04 AP         ONS-5     377426009   7/16/2015    BETA         2.15E-02     1.78E-03    l.30E-03 AP         ONS-6     377426010   7/15/2015    BETA         2.13E-02     1.51E-03    9.49E-04 AP        NBF        377895001 . 7/22/2015    BETA         2.75E-02     1.71E-03    9.41E-04 AP         SBN       377895002   7/22/2015    BETA         2.60E-02     l.67E-03    9.48E-04 AP         DOW       377895003   7/22/2015    BETA         2.66E-02     1.65E-03    9.lOE-04 AP         COL       377895004   7/22/2015    BETA         2.35E-02     1.54E-03    9.0lE-04 AP         ONS-1     377895005   7/22/2015    BETA         2.65E-02     1.64E-03    9.05E-04 AP         ONS-2     377895006   7/22/2015    BETA         2.60E-02     1.62E-03    8.97E-04 AP         ONS-3     377895007   7/22/2015    BETA         2.62E-02     1.63E-03    8.97E-04 AP         ONS-4     377895008   7/22/2015    BETA         2.62E-02     l.66E-03    9.35E-04 AP         ONS-5     377895009   7/22/2015    BETA         2.84E-02     1.82E-03    1.03E-03 AP         ONS-6     377895010   7/22/2015    BETA         3.29E-02     l.84E-03    9.12E-04 AP        NBF        378372001   7/29/2015    BETA         4.07E-02    2.06E-03     9.21E-04 AP         SBN       378372002   7/29/2015    BETA         3.22E-02     l.85E-03    9.42E-04 AP        DOW        378372003   7/29/2015    BETA         3.75E-02     1.94E-03    8:90E-04 AP         COL       378372004   7/29/2015    BETA         3.30E-02     1.83E-03    9.02E-04 AP         ONS-1     378372005   7/29/2015    BETA         4.28E-02    2.09E-03     9.02E-04 AP        ONS-2      378372006   7/29/2015    BETA         4.0lE-02    2.0lE-03     8.89E-04 AP         ONS-3     378372007   7/29/2015    BETA         3.74E-02     1.95E-03    8.98E-04 AP         ONS-4     378372008   7/29/2015    BETA         3.74E-02     l.97E-03    9.20E-04 AP         ONS-5     378372009   7/29/2015    BETA         3.48E-02     l.87E-03    8.92E-04 AP         ONS-6     378372010   7/29/2015    BETA         3.34E-02     l.84E-03    8.98E-04 AP         NBF       378883001    8/5/2015    BETA         2.66E-02     1.71E-03    l.05E-03 AP         SBN       378883002    8/5/2015    BETA         2.95E-02     l.77E-03    l.OlE-03 AP        DOW        378883003    8/5/2015    BETA         2.56E-02     1.60E-03    9.57E-04 AP         COL       378883004    8/5/2015    BETA         2.65E-02     l.69E-03    1.03E-03 AP         ONS-1     378883005    8/5/2015    BETA         2.84E-02     l.72E-03    9.96E-04 AP         ONS-2     378883006    8/5/2015    BETA         3.41E-02     l.88E-03    9.90E-04 AP        ONS-3      378883007    8/5/2015    BETA         3.22E-02     l.81E-03    9.74E-04 AP        ONS-4      378883008    8/5/2015    BETA         2.83E-02     l.74E-03    l.02E-03 AP        ONS-5      378883009    8/5/2015    BETA         2.91E-02     l.70E-03    9.56E-04 AP         ONS-6     378883010    8/5/2015    BETA         2.76E-02    l.72E-03     1.03E-03 D-18

Donald C~ Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         NBF       379369001 8/12/2015    BETA        2.92E-02     l.77E-03    l.02E-03 AP         SBN       379369002 8/12/2015    BETA        3.14E-02     1.83E-03    l.02E-03 AP         DOW       379369003 8/12/2015    BETA        2.76E-02     l.66E-03    9.52E-04 AP         COL       379369004 8/12/2015    BETA        3.00E-02     l.78E-03    l.OlE-03 AP         ONS-1     379369005 8/12/2015    BETA        3.37E-02     l.86E-03    9.76E-04 AP         ONS-2     379369006 8/12/2015    BETA        3.15E-02     l.87E-03    l.06E-03 AP         ONS-3     379369007 8/12/2015    BETA        2.82E-02     l.70E-03    9.75E-04 AP         ONS-4     379369008 8/12/2015    BETA        2.83E-02     l.74E-03    l.02E-03 AP         ONS-5     379369009 8/12/2015    BETA        2.66E-02     l.66E-03    9.82E-04 AP         ONS-6     379369010 8/12/2015    BETA        2.94E-02     l.75E-03    9.92E-04 AP         NBF       379768001 8/19/2015    BETA        3.96E-02     2.05E-03    l.03E-03 AP         SBN       379768002 8/19/2015    BETA        4.0lE-02     2.07E-03    l.04E-03 AP         DOW       379768003 8/19/2015    BETA        4.02E-02     2.05E-03    l.OlE-03 AP         COL       379768004 8/19/2015    BETA        4.09E-02     2.09E-03    l.04E-03 AP         ONS-1     379768005 8/19/2015    BETA        3.68E-02     l.96E-03    l.OlE-03 AP         ONS-2     379768006 8/19/2015    BETA        3.92E-02     2.07E-03    l.06E-03 AP         ONS-3     379768007 8/19/2015    BETA        3.97E-02     2.02E-03    9.90E-04 AP         ONS*4     379768008 8/19/2015    BETA        4.19E-02     2.16E-03    1.07E-03 AP         ONS-5     379768009 8/19/2015    BETA        3.71E-02     1.96E-03    1.0lE-03 AP         ONS-6     379768010 8/19/2015    BETA        3.84E-02     2.0lE-03    1.02E-03 AP         NBF       384522001 9/30/2015   Ac-228       2.07E-04     4.92E-04    1.72E-03 u AP         NBF       384522001 9/30/2015  Ag-108m      -1.51E-05     8.65E-05    2.79E-04 u AP         NBF       384522001 9/30/2015  Ag-llOm      -8.06E-06     1.12E-04    3.65E-04 u AP         NBF       384522001 9/30/2015    Ba-140     -1.91E-02     4.77E-02    1.47E-01 u AP         NBF       384522001 9/30/2015     Be-7        1.50E-01    1.14E-02    7.50E-03 AP         NBF       384522001 9/30/2015    Ce-141      2.49E-04     8.59E-04    2.65E-03 u AP         NBF       384522001 9/30/2015    Ce-144      4.llE-04     5.71E-04    1.90E-03 u AP         NBF       384522001 9/30/2015    Co-57       2.14E-05     7.23E-05    2.38E-04 u AP         NBF       384522001 9/30/2015    Co-58      -2.72E-04     2.17E-04    5.54E-04 u AP         NBF       384522001 9/30/2015    Co-60      -1.86E-04     1.18E-04    1.94E-04 u AP         NBF       384522001 9/30/2015    Cr-51        1.05E-02    7.36E-03    2.54E-02 u AP         NBF       384522001 9/30/2015    Cs-134     -9.32E-05     1.67E-04    4.38E-04 u AP         NBF       384522001 9/30/2015    Cs-137     -3.88E-05     1.12E-04    3.63E-04 u AP         NBF       384522001 9/30/2015    Fe-59      -7.04E-04     7.73E-04    2.05E-03 u AP         NBF       384522001 9/30/2015     1-131      4.16E-01     1.68E-01    O.OOE+OO UI AP         NBF       384522001 9/30/2015     K-40      -2.09E-04     1.48E-03    5.05E-03 u AP         NBF       384522001 9/30/2015    La-140     -1.39E-02     l.86E-02    5.22E-02 u AP         NBF       384522001 9/30/2015    Mn-54       2.21E-04     l.65E-04    5.87E-04 u AP         NBF       384522001 9/30/2015    Nb-95      -2.66E-04     2.51E-04    7.0lE-04 u AP         NBF       384522001 9/30/2015    Ru-103       1.33E-03    5.56E-04    1.86E-03 u AP         NBF       384522001 9/30/2015    Ru-106       1.48E-03    l.27E-03    4.38E-03 u AP         NBF       384522001 9/30/2015    Sb-124       5.86E-04    5.94E-04    2.34E-03 u AP         NBF       384522001 9/30/2015    Sb-125       1.07E-04    3.05E-04    1.02E-03 u AP         NBF       384522001 9/30/2015     Se-75     -2.57E-04     1.79E-04. 5.06E-04 u AP         NBF       384522001 9/30/2015    Th-228      7.07E-05     2.35E-04    6.04E-04 u AP         NBF       384522001 9/30/2015    Zn-65      -1.70E-04     2.87E-04    8.33E-04 u AP         NBF       384522001 9/30/2015     Zr-95      2.40E-04     4.82E-04    1.69E-03 u AP         SBN       384522002 9/30/2015    Ac-228      -4.40E-04    9.24E-04    3.05E-03 u AP         SBN       384522002 9/30/2015   Ag-108m       l.06E-04  . 1.64E-04    4.97E-04 u AP         SBN       384522002 9/30/2015   Ag-llOm      2.79E-04     3.93E-04    1.36E-03 u D-19

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE     NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         SBN       384522002 9/30/2015   Ba-140       l.68E-01     1.0SE-01    3.SlE-01 u AP         SBN       384522002 9/30/2015    Be-7        l.31E-Ol     1.64E-02    1.63E-02 AP         SBN       384522002 9/30/2015   Ce-141      -1.26E-04     l.26E-03    3.98E-03 u AP         SBN       384522002 9/30/2015   Ce-144      -7.56E-05    9.98E-04     3.lSE-03 u AP         SBN       384522002 9/30/2015   Co-57       -2.98E-05     l.16E-04    3.65E-04 u AP         SBN       384522002 9/30/2015   Co-58       -5.06E-04    5.61E-04     1.59E-03 u AP         SBN       384522002 9/30/2015   Co-60       -3.00E-04    2.63E-04     6.59E-04 u AP         SBN       384522002 9/30/2015    Cr-51      -2.44E-02     1.40E-02    3.56E-02 u AP         SBN       384522002 9/30/2015   Cs-134       5.05E-04    2.69E-04     9.68E-04 u AP         SBN       384522002 9/30/2015   Cs-137       7.41E-05    2.27E-04     7.71E-04 u AP         SBN       384522002 9/30/2015    Fe-59      -3.42E-03     1.96E-03    4.20E-03 u AP         SBN       384522002 9/30/2015    I-131       3.72E-01     3.SlE-01    O.OOE+OO UI AP         SBN       384522002 9/30/2015    K-40        2.69E-03    2.77E-03     l.14E-02 U AP         SBN       384522002 9/30/2015   La-140      -2.09E-02    3.97E-02     1.21E-01 u AP         SBN       384522002 9/30/2015   Mn-54       -7.04E-04    3.49E-04     7.lSE-04 U AP         SBN       384522002 9/30/2015   Nb-95       -1.20E-03    7.19E-04     1.76E-03 u AP         SBN       384522002 9/30/2015   Ru-103       8.34E-04    9.52E-04     3.35E-03 u AP         SBN       384522002 9/30/2015   Ru-106       1.15E-03    2.41E-03     8.28E-03 u AP         SBN       384522002 9/30/2015   Sb-124      -l.33E-03     1.53E-03    4.13E-03 u AP         SBN       384522002 9/30/2015   Sb-125       6.98E-04     6.86E-04    l.70E-03 u AP         SBN       384522002 9/30/2015    Se-75      -5.74E-04     3.83E-04    l.06E-03 u AP         SBN       384522002 9/30/2015   Th-228       4.22E-04     3.21E-04    l.23E-03 u AP         SBN       384522002 9/30/2015    Zn-65       6.86E-04     6.61E-04    2.38E-03 u AP         SBN       384522002 9/30/2015    Zr-95       1.58E-03    9.35E-04     3.13E-03 u AP         DOW       384522003 9/30/2015   Ac-228       3.54E-04    4.43E-04     l.60E-03 u AP         DOW       384522003 9/30/2015  Ag-108m       9,87E-05    8.33E-05     2.94E-04 U AP         DOW       384522003 9/30/2015  Ag-1 lOm     -2.16E-04     1.66E-04    3.91E-04 u AP         DOW       384522003 9/30/2015   Ba-140       l.36E-02    4.lOE-02     l.38E-01 u AP         DOW       384522003 9/30/2015    Be-7        1.20E-01     1.04E-02    9.41E-03 AP         DOW       384522003 9/30/2015   Ce-141       4.38E-04     8.95E-04    2.24E-03 u AP         DOW       384522003 9/30/2015   Ce-144      -1.0SE-04     5.43E-04    l.74E-03 u AP         DOW       384522003 9/30/2015   Co-57        5.30E-05     7.65E-05    2.57E-04 u AP         DOW       384522003 9/30/2015   Co-58        7.22E-05     1.91E-04    6.69E-04 u AP         DOW       384522003 9/30/2015    Co-60      -8.36E-05     1.23E-04    3.56E-04 u AP         DOW       384522003 9/30/2015    Cr-51       2.34E-03     8.21E-03    2.78E-02 u
 *AP         DOW       384522003 9/30/2015   Cs-134       9.70E-05    9.91E-05     3.70E-04 u AP         DOW       384522003 9/30/2015   Cs-137       l.91E-04     l.12E-04    4.llE-04 u AP         DOW       384522003 9/30/2015    Fe-59       5.61E-05     1.03E-03    3.38E-03 u AP         DOW       384522003 9/30/2015    I-131       l.52E-01    2.34E-01     O.OOE+OO UI AP         DOW       384522003 9/30/2015    K-40        3.57E-04    2.13E-03     7.77E-03 u AP         DOW       384522003 9/30/2015   La-140       l.02E-04     1.46E-02    4.SlE-02 u AP         DOW       384522003 9/30/2015   Mn-54       -1.89E-04     l.53E-04    4.09E-04 u AP         DOW       384522003 9/30/2015   Nb-95       -l.42E-04     2.86E-04    8.91E-04 u AP         DOW       384522003 9/30/2015   Ru-103      -1.40E-04     4.02E-04    l.25E-03 u AP         DOW       384522003 9/30/2015   Ru-106      -2.56E-04     l.27E-03    3.96E-03 u AP         DOW       384522003 9/30/2015   Sb-124       2.99E-04     9.51E-04    3.28E-03 u AP         DOW       384522003 9/30/2015   Sb-125       l.14E-04    2.87E-04     9.72E-04 u AP         DOW       384522003 9/30/2015    Se-75      -4.45E-04    2.31E-04     5.96E-04 u AP         DOW       384522003 9/30/2015   Th-228      -2.96E-04     1.93E-04    5.94E-04 u AP         DOW       384522003 9/30/2015    Zn-65      -5.30E-04     3.99E-04    9.79E-04 u D-20

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN        DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        DOW        384522003   9/30/2015     Zr-95      -3.lOE-04    4.26E-04     l.25E-03 u AP         COL       384522004   9/30/2015    Ac-228      -8.78E-04    6.57E-04     l.72E-03 u AP         COL       384522004   9/30/2015   Ag-108m      -2.50E-05    8.95E-05     2.83E-04 u AP         COL       384522004   9/30/2015   Ag-llOm      -4.SOE-04    2.SOE-04     5.38E-04 u AP         COL       384522004   9/30/2015    Ba-140       4.87E-02    6.37E-02     2.23E-01 u AP         COL       384522004   9/30/2015     Be-7        1.17E-01     l.12E-02    l.03E-02 AP         COL       384522004   9/30/2015    Ce-141       1.47E-03    1.09E-03     3.39E-03 u AP         COL       384522004   9/30/2015    Ce-144       6.83E-04    8.07E-04     2.73E-03 u AP.        COL       384522004   9/30/2015    Co-57        8.41E-05     1.03E-04    3.49E-04 u AP         COL       384522004   9/30/2015    Co-58       -l.85E-04    3.48E-04     l.06E-03 u AP         COL       384522004   9/30/2015    Co-60        2.36E-04    2.23E-04     8.41E-04 u AP         COL       384522004   9/30/2015     Cr-51       l.42E-02     l.12E-02    3.74E-02 u AP         COL       384522004   9/30/2015    Cs-134       1.63E-04     l.43E-04    5.48E-04 u AP         COL       384522004   9/30/2015    Cs-137       l.53E-05     1.42E-04    4.62E-04 u AP         COL       384522004   9/30/2015     Fe-59      -1.38E-03     l.21E-03    2.77E-03 u AP         COL       384522004   9/30/2015     1-131       3.27E-01    2.81E-01     O.OOE+OO UI AP         COL       384522004   9/30/2015     K.-40      -2.95E-03    2.50E-03     7.65E-03 u AP         COL       384522004   9/30/2015    La-140       2.09E-05    2.45E-02     8.07E-02 u AP         COL       384522004   9/30/2015    Mn-54       -5.45E-05    1.72E-04     5.41E-04 u AP         COL       384522004   9/30/2015    Nb-95       -1.26E-05    4.04E-04     1.35E-03 u AP         COL       384522004   9/30/2015    Ru-103      -2.18E-04    6.18E-04     l.93E-03 u AP         COL       384522004   9/30/2015    Ru-106      -3.95E-03    2.26E-03     3.50E-03 u AP         COL       384522004   9/30/2015    Sb-124      O.OOE+OO     O.OOE+OO     O.OOE+OO UI AP         COL       384522004   9/30/2015    Sb-125       4.90E-04    4.04E-04     l.44E-03 u AP         COL       384522004   9/30/2015     Se-75      -5.51E-04    2.91E-04     7.53E-04 u AP         COL       384522004   9/30/2015    Th-228       6.12E-05    3.62E-04     8.32E-04 u AP         COL       384522004   9/30/2015    Zn-65       -1.30E-03    6.38E-04     9.93E-04 u AP         COL       384522004   9/30/2015     Zr-95      -1.21E-04    6.49E-04     2.20E-03 u AP         ONS-1     384522005   9/30/2015    Ac-228      -3.27E-04    6.15E-04     2.0SE-03 u AP         ONS-1     384522005   9/30/2015   Ag-108m      -1.25E-04    1.03E-04     2.40E-04 u AP         ONS-1     384522005   9/30/2015   Ag-llOm      -4.24E-04    2.23E-04     3.92E-04 u AP         ONS-1     384522005   9/30/2015. Ba-140       2.22E-02    4.63E-02     1.57E-01 u AP         ONS-1     384522005   9/30/2015     Be-7        1.39E-01     1.19E-02    1.0lE-02 AP         ONS-1     384522005   9/30/2015    Ce-141      -2.26E-04     l.09E-03    3.49E-03 u AP         ONS-1     384522005   9/30/2015    Ce-144       9.22E-04    7.98E-04     2.65E-03 u AP         ONS-1     384522005   9/30/2015    Co-57       -3.60E-05     l.02E-04    3.23E-04 u AP         ONS-1     384522005*  9/30/2015    Co-58       -3.64E-04    3.18E-04     8.54E-04 u AP         ONS-1     384522005   9/30/2015    Co-60       -2.06E-04     l.85E-04    4.86E-04 u AP         ONS-1     384522005   9/30/2015     Cr-51       7.75E-03     l.05E-02    3.58E-02 u AP         ONS-1     384522005   9/30/2015    Cs-134      -5.55E-06     l.60E-04    5.27E-04 u AP         ONS-1     384522005   9/30/2015    Cs-137       9.63E-06     l.07E-04    3.62E-04 u AP         ONS-1     384522005   9/30/2015     Fe-59       8.30E-05    9.37E-04     3.07E-03 u AP         ONS-1     384522005   9/30/2015     1-131      -1.78E-01    2.87E-01     O.OOE+OO u AP         ONS-1     384522005   9/30/2015     K-40        8.00E-05    2.03E-03     7.llE-03 u AP         ONS-1     384522005   9/30/2015    La-140       3.46E-02     1.91E-02    8.05E-02 u AP         ONS-1     384522005   9/30/2015    Mn~54        4.0lE-05     1.77E-04    5.99E-04 u AP         ONS-1     384522005   9/30/2015    Nb-95       -1.83E-04    3.37E-04     l.04E-03 u AP         ONS-1     384522005   9/30/2015    Ru-103      -4.86E-05    5.16E-04     l.65E-03 u AP         ONS-1     384522005 . 9/30/2015    Ru-106       1.99E-03     l.52E-03    5.03E-03 u AP         ONS-1     384522005   9/30/2015    Sb-124       2.24E-03     l.06E-03    4.27E-03 u D-21

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE       (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-1     384522005 9/30/2015    Sb-125     -3.75E-04    3.97E-04     l.16E-03 u AP         ONS-1     384522005 9/30/2015     Se-75     -3.23E-04    2.95E-04     8.96E-04 u AP         ONS-1     384522005 9/30/2015    Th-228      l.61E-04    3.0lE-04     8.57E-04 u AP         ONS-1     384522005 9/30/2015    Zn-65       3.14E-04    4.22E-04     l.48E-03 u AP         ONS-1     384522005 9/30/2015     Zr-95     -3.SOE-04    4.66E-04     l.32E-03 u AP         ONS-2     384522006 9/30/2015    Ac-228      3.71E-04    4.79E-04     l.85E-03 u AP         ONS-2     384522006 9/30/2015   Ag-108m      4.28E-05    9.18E-05     3.0SE-04 u AP         ONS-2     384522006 9/30/2015   Ag-llOm      3.83E-04    2.03E-04     7.42E-04 u AP         ONS-2     384522006 9/30/2015    Ba-140     -8.0lE-03    4.71E-02     l.47E-Ol u AP         ONS-2     384522006 9/30/2015     Be-7       l.26E-Ol     l.03E-02    9.28E-03 AP         ONS-2     384522006 9/30/2015. Ce-141      2.43E-04    8.16E-04     2.41E-03 u AP         ONS-2     384522006 9/30/2015    Ce-144     -4.74E-04    6.12E-04     l.86E-03 u AP         ONS-2     384522006 9/30/2015    Co-57       l.71E-04     l.18E-04    2.84E-04 u AP         ONS-2     384522006 9/30/2015    Co-58      -5.86E-05    2.51E-04     7.97E-04 u AP         ONS-2     384522006 9/30/2015    Co-60      -l.20E-05    8.19E-05     2.59E-04 u AP         ONS-2     384522006 9/30/2015     Cr-51      6.21E-03    7.0lE-03     2.42E-02 u AP         ONS-2     384522006 9/30/2015    Cs-134     -7.35E-05     1.31E-04    3.97E-04 u AP         ONS-2     384522006 9/30/2015    Cs-137     -1.03E-04     l.17E-04    3.48E-04 u AP         ONS-2     384522006 9/30/2015     Fe-59     -8.43E-04    9.17E-04     l.97E-03 u AP         ONS-2     384522006 9/30/2015     I-131      1.37E-01    2.03E-Ol     O.OOE+OO UI AP         ONS-2     384522006 9/30/2015     K-40       8.73E-04     l.74E-03    6.53E-03 u AP         ONS-2     384522006 9/30/2015    La-140     -6.76E-03     l.63E-02    4.73E-02 u AP         ONS-2     384522006 9/30/2015    Mn-54       7.74E-05     1.47E-04    4.92E-04 u AP         ONS-2     384522006 9/30/2015    Nb-95       4.32E-04    3.0lE-04     l.OSE-03 u AP         ONS-2     384522006 9/30/2015    Ru-103     -2.15E-06    4.14E-04     l.33E-03 u AP         ONS-2     384522006 9/30/2015    Ru-106     -2.39E-03     l.61E-03    3.49E-03 u AP         ONS-2     384522006 9/30/2015    Sb-124      7.81E-05    8.09E-04     2.75E-03 u AP         ONS-2     384522006 9/30/2015    Sb-125     -2.72E-05    2.68E-04     8.62E-04 u AP         ONS-2     384522006 9/30/2015     Se-75     -7.07E-06    2.12E-04     7.12E-04 u AP         ONS-2     384522006 9/30/2015    Th-228     -l.73E-04     l.90E-04    6.15E-04 u AP         ONS-2     384522006 9/30/2015    Zn-65       l.18E-04    3.lOE-04     1.0SE-03 u AP         ONS-2     384522006 9/30/2015     Zr-95     -l.12E-04    4.87E-04     1.56E-03 u AP         ONS-3     384522007 9/30/2015    Ac-228     -4.24E-04    4.96E-04     1.57E-03 u AP         ONS-3     384522007 9/30/2015   Ag-108m      l.86E-04     1.02E-04    3.42E-04 u AP         ONS-3     384522007 9/30/2015   Ag-llOm      3.61E-04    2.18E-04     7.86E-04 u AP         ONS-3     384522007 9/30/2015    Ba-140      3.33E-02    4.llE-02     l.43E-Ol u AP         ONS-3     384522007 9/30/2015     Be-7 ,     l.30E-01     l.06E-02    9.28E-03 AP         ONS-3     384522007 9/30/2015    Ce-141      4.64E-04    8.44E-04     2.79E-03 u AP         ONS-3     384522007 9/30/2015    Ce-144     -1.06E-03    6.89E-04     l.90E-03 u AP         ONS-3     384522007 9/30/2015    Co-57       2.32E-04     l.48E-04    2.45E-04 u AP         ONS-3     384522007 9/30/2015    Co-58       4.84E-04    2.67E-04     9.56E-04 u AP         ONS-3     384522007 9/30/2015    Co-60       5.66E-05     l.71E-04    5.75E-04 u AP         ONS-3     384522007 9/30/2015     Cr-51     -3.95E-03    7.19E-03     2.31E-02 u AP         ONS-3     384522007 9/30/2015    Cs-134     -4.21E-05     l.19E-04    4.05E-04 u AP         ONS-3     384522007 9/30/2015    Cs-137      l.66E-05     l.OOE-04    3.29E-04 u AP         ONS-3     384522007 9/30/2015     Fe-59     -9.0lE-04     9.82E-04    2.79E-03 u AP         ONS-3     384522007 9/30/2015     I-131     -4.73E-02    2.27E-Ol     O.OOE+OO u AP         ONS-3     384522007 9/30/2015     K-40       4.16E-03     l.85E-03    4.19E-03 u AP         ONS-3     384522007 9/30/2015    La-140     -4.57E-02    2.31E-02     4.14E-02 u AP         ONS-3     384522007 9/30/2015    Mn-54       2.74E-05     l.30E-04    3.91E-04 u D-22

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                     CONC      STD.DEV.       MDC        FLAGS TYPE    STATION       LSN      DATE     NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP        ONS-3     384522007 9/30/2015    Nb-95       l.35E-04    2.85E-04     9.95E-04  u AP        ONS-3     384522007 9/30/2015   Ru-103      -9.48E-04    5.03E-04     l.18E-03  u AP        ONS-3     384522007 9/30/2015   Ru-106      -6.05E-04    9.69E-04     2.87E-03  u AP        ONS-3     384522007 9/30/2015   Sb-124       8.62E-04    8.27E-04     3.1 IE-03 u AP        ONS-3     384522007 9/30/2015   Sb-125      -3.89E-04    2.74E-04     7.40E-04  u AP        ONS-3     384522007 9/30/2015    Se-75      -2.62E-04    2.13E-04     6.42E-04  u AP        ONS-3     384522007 9/30/2015   Th-228       1.90E-04     l.87E-04    6.28E-04  u AP        ONS-3     384522007 9/30/2015    Zn-65       5.29E-04    2.91E-04     1.lOE-03  u AP        ONS-3     384522007 9/30/2015    Zr-95       2.62E-04    4.41E-04     l.57E-03  u AP        ONS-4     384522008 9/30/2015   Ac-228       9.41E-04    5.lOE-04     l.86E-03  u AP        ONS-4     384522008 9/30/2015  Ag-108m       1.59E-05    7.90E-05     2.64E-04  u AP        ONS-4     384522008 9/30/2015  Ag-llOm      -l.56E-04     1.82E-04    5.20E-04  u AP        ONS-4     384522008 9/30/2015   Ba-140       3.26E-02    4.71E-02     1.61E-01  u AP        ONS-4     384522008 9/30/2015    Be-7        l.34E-01     1.13E-02    9.25E-03 AP        ONS-4     384522008 9/30/2015   Ce-141       1.0IE-07    8.44E-04     2.69E-03  u AP        ONS-4     384522008 9/30/2015   Ce-144       1.21E-05    5.07E-04     l.64E-03  u AP        ONS-4     384522008 9/30/2015    Co-57      -4.49E-05    6.84E-05     2.09E-04  u AP        ONS-4     384522008 9/30/2015    Co-58       3.66E-04    2.22E-04     8.36E-04  u AP        ONS-4     384522008 9/30/2015    Co-60       l.78E-04    9.62E-05     4.03E-04  u AP        ONS-4     384522008 9/30/2015    Cr-51      -4.80E-03    7.30E-03     2.30E-02  u AP        ONS-4     384522008 9/30/2015   Cs-134      -1.62E-04     l.25E-04    3.24E-04  u AP        ONS-4     384522008 9/30/2015   Cs-137      -4.90E-05     1.16E-04    3.74E-04  u AP        ONS-4     384522008 9/30/2015    Fe-59      -3.35E-04    9.61E-04     2.98E-03  u AP       ONS-4      384522008 9/30/2015    I-131       4.04E-02    2.41E-01    O.OOE+OO UI AP       ONS-4      384522008 9/30/2015    K-40        1.49E-03     l.92E-03    6.94E-03  u AP        ONS-4     384522008 9/30/2015   La-140      -8.29E-03     l.71E-02    5.08E-02  u AP        ONS-4     384522008 9/30/2015   Mn-54       -1.33E-04     l.07E-04    2.66E-04  u AP        ONS-4     384522008 9/30/2015    Nb-95      -3.38E-04    2.63E-04     6.94E-04  u AP        ONS-4     384522008 9/30/2015   Ru-103       2.13E-04    3.72E-04     1.28E-03  u AP        ONS-4     384522008 9/30/2015   Ru-106      -3.00E-03     1.41E-03    2.72E-03  u AP        ONS-4     384522008 9/30/2015   Sb-124      -3.95E-04    7.47E-04     2.19E-03  u AP        ONS-4     384522008 9/30/2015   Sb-125       l.06E-04    2.84E-04     9.56E-04  u AP        ONS-4     384522008 9/30/2015    Se-75       l.87E-04     1.97E-04    6.85E-04  u
 . AP        ONS-4     384522008 9/30/2015   Th-228       8.43E-05     1.77E-04    6.38E-04  u AP        ONS-4     384522008 9/30/2015    Zn-65      -l.79E-04    3.40E-04     l.02E-03  u AP       ONS-4      384522008 9/30/2015    Zr-95       5.07E-04    4.80E-04     1.74E-03  u AP       ONS-5      384522009 9/30/2015   Ac-228      -4.38E-05    5.78E-04     1.99E-03  u AP       ONS-5      384522009 9/30/2015  Ag-108m       l.50E-04    9.99E-05     3.47E-04  u AP       ONS-5      384522009 9/30/2015  Ag-llOm      -3.lOE-04    2.08E-04     4.50E-04  u AP        ONS-5     384522009 9/30/2015   Ba-140      -4.63E-03    4.86E-02     l.62E-01  u AP        ONS-5     384522009 9/30/2015    Be-7        l.32E-01     1.14E-02    9.08E-03 AP        ONS-5     384522009 9/30/2015   Ce-141       l.22E-03    8.56E-04     2.85E-03  u AP        ONS-5     384522009 9/30/2015   Ce-144      -l.30E-03    8.16E-04     2.19E-03  u AP        ONS-5     384522009 9/30/2015    Co-57      -2.91E-05    8.79E-05     2.77E-04  u AP        ONS-5     384522009 9/30/2015    Co-58       2.23E-04    2.84E-04     1.00E-03  u AP        ONS-5     384522009 9/30/2015    Co-60       l.94E-05    2.06E-04     6.83E-04  u AP       ONS-5      384522009 9/30/2015   'Cr-51      -l.43E-02    9.92E-03     2.12E-02  u AP       ONS-5      384522009 9/30/2015   Cs-134      -9.00E-05     1.27E-04    3.63E-04  u AP       ONS-5      384522009 9/30/2015   Cs-137      -1.85E-04     l.32E-04    3.40E-04  u AP       ONS-5      384522009 9/30/2015    Fe-59      -9.50E-04    9.30E-04     2.48E-03  u D-23

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-5     384522009 9/30/2015     I-131      -2.38E-01    2.56E-01     O.OOE+OO u AP         ONS-5     384522009 9/30/2015     K-40       -8.99E-04    2.06E-03     6.99E-03 u AP         ONS-5     384522009 9/30/2015    La-140      -1.0lE-02     l.92E-02    5.34E-02 u AP         ONS-5     384522009 9/30/2015    Mn-54       -l.OSE-05     1.29E-04    4.14E-04 u AP         ONS-5     384522009 9/30/2015    Nb-95        l.68E-04    3.16E-04     l.09E-03 u AP         ONS-5     384522009 9/30/2015    Ru-103       7.02E-04    5.19E-04     l.86E-03 u AP         ONS-5     384522009 9/30/2015    Ru-106      -9.31E-05     l.18E-03    3.90E-03 u AP         ONS-5     384522009 9/30/2015    Sb-124       l.18E-03    9.74E-04     3.76E-03 u AP         ONS-5     384522009 9/30/2015    Sb-125       l.05E-06    3.llE-04     1.0lE-03 u AP         ONS-5     384522009 9/30/2015     Se-75      -l.21E-06    2.18E-04     7.27E-04 u AP         ONS-5     384522009 9/30/2015    Th-228       l.65E-04     l.97E-04    6.90E-04 u AP         ONS-5     384522009 9/30/2015    Zn-65        2.39E-04    4. l lE-04   l.45E-03 u AP         ONS-5     384522009 9/30/2015     Zr-95       2.00E-04    4.52E-04     1.57E-03 u AP         ONS-6     384522010 9/30/2015    Ac-228       4.70E-04    4.85E-04     1.78E-03 u AP         ONS-6     384522010 9/30/2015   Ag-108m      -3.68E-05    8.72E-05     2.71E-04 u AP         ONS-6     384522010 9/30/2015   Ag-llOm      -5.96E-05     1.45E-04    4.40E-04 u AP         ONS-6     384522010 9/30/2015    Ba-140      -1.47E-02    3.79E-02     1.15E-01 u AP         ONS-6     384522010 9/30/2015     Be-7        1.40E-01     l.llE-02    6.96E-03 AP         ONS-6     384522010 9/30/2015    Ce-141       7.73E-04    7.85E-04     2.60E-03 u AP         ONS-6     384522010 9/30/2015    Ce-144      -8.29E-04    6.03E-04     l.66E-03 u AP         ONS-6     384522010 9/30/2015    Co-57        3.95E-06    7.06E-05     2.29E-04 u AP         ONS-6     384522010 9/30/2015    Co-58        6.0SE-05     1.81E-04    6.27E-04 u AP         ONS-6     384522010 9/30/2015    Co-60       -1.21E-04     l.29E-04    3.47E-04 u AP         ONS-6     384522010 9/30/2015    Cr-51        2.81E-03    6.76E-03     2.30E-02 u AP         ONS-6     384522010 9/30/2015    Cs-134       6.36E-05     l.31E-04    4.54E-04 u AP         ONS-6     384522010 9/30/2015    Cs-137      -8.35E-05    9.84E-05     2.88E-04 u AP         ONS-6     384522010 9/30/2015     Fe-59      -5.0SE-04    6.71E-04     1.76E-03 u AP         ONS-6     384522010 9/30/2015     1.-131     -8.26E-02    2.30E-01     O.OOE+OO u AP         ONS-6     384522010 9/30/2015     K-40        2.75E-03    2.19E-03     8.30E-03 u AP         ONS-6     384522010 9/30/2015    La-140      -9.69E-03    2.09E-02     6.25E-02 u AP         ONS-6     384522010 9/30/2015    Mn-54        6.27E-05     l.34E-04    4.61E-04 u AP         ONS-6     384522010 9/30/2015    Nb-95        l.1 lE-04   2.28E-04     8.19E-04 u AP         ONS-6     384522010 9/30/2015    Ru-103      -5.89E-04    4.50E-04     1.16E-03 u AP         ONS-6     384522010 9/30/2015    Ru-106       l.24E-03    9.78E-04     3.33E-03 u AP         ONS-6     384522010 9/30/2015    Sb-124       5.76E-04    7.61E-04     2.81E-03 u AP         ONS-6     384522010 9/30/2015    Sb-125      -l.73E-04    2.65E-04     7.99E-04 u AP         ONS-6     384522010 9/30/2015     Se-75       3.50E-04    2.06E-04     7.0lE-04 u AP         ONS-6     384522010 9/30/2015    Th-228       5.84E-05    2.22E-04     6.06E-04 u AP         ONS-6     384522010 9/30/2015    Zn-65       -3.29E-04    3.75E-04     1.03E-03 u AP         ONS-6     384522010 9130/2015     Zr-95      -4.33E-04    3.65E-04     9.0SE-04 u AP        NBF        380195001 8/26/2015    BETA         2.50E-02     1.63E-03    1.0lE-03 AP         SBN       380195002 8/26/2015    BETA         2.66E-02    1.67E-03     9.98E-04 AP        DOW        380195003 8/26/2015    BETA         2.72E-02     l.67E-03    9.73E-04 AP         COL       380195004 8/26/2015    BETA         2.40E-02     l.62E-03    1.03E-03 AP         ONS-1     380195005 8/26/2015    BETA         2.31E-02     l.56E-03    1.00E-03 AP         ONS-2     380195006 8/26/2015    BETA         2.94E-02    1.79E-03     1.03E-03 AP         ONS-3     380195007 8/26/2015    BETA         2.61E-02    1.65E-03     9.98E-04 AP         ONS-4     380195008 8/26/2015    BETA         2.29E-02     l.62E-03    l.08E-03 AP         ONS-5     380195009 8/26/2015    BETA         2.66E-02     l.68E-03    1.0lE-03 AP         ONS-6     380195010 8/26/2015    BETA         2.83E-02    1.74E-03     l.02E-03 D-24

Donald C. Cook Nuclear Plant           Annual Radiological Enviror;imental Operating Report 2015 SAMPLE                             END                      CONC        STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)      (pCi/m3)    (pCi/m3)
AP         NBF       380656001 9/2/2015     BETA         4.78E-02      2.27E-03     l.03E-03 AP         SBN       380656002 9/2/2015     BETA         5.18E-02      2.37E-03     l.04E-03 AP         DOW       380656003 9/2/2015     BETA         4.34E-02      2.13E-03     1.00E-03 AP         COL       380656004 9/2/2015     BETA         4.07E-02      2.lOE-03     1.05E-03 AP         ONS-1     380656005 9/2/2015     BETA         4.47E-02      2.18E-03     l.02E-03 AP         ONS-2     380656006  9/2/2015    BETA         5.07E-02      2.29E-03     9.96E-04 AP         ONS-3     380656007  9/2/2015    BETA         5.14E-02      2.36E-03     1.04E-03 AP         ONS-4     380656008  9/2/2015    BETA         4.75E-02      2.37E-03     1.14E-03 AP         ONS-5     380656009  9/2/2015    BETA         5.55E-02      2.43E-03     1.02E-03 AP         ONS-6     380656010  9/2/2015    BETA         5.28E-02      2.37E-03     1.02E-03 AP         NBF       381042001  9/9/2015    BETA         5.91E-02      2.52E-03     l.04E-03 AP         SBN       381042002  9/9/2015    BETA         5.87E-02      2.52E-03     1.05E-03 AP         DOW       381042003 9/9/2015     BETA         5.85E-02      2.49E-03     l.02E-03 AP         COL       381042004 9/9/2015     BETA         5.89E-02      2.46E-03     9.89E-04 AP         ONS-1     381042005 9/9/2015     BETA         5.32E-02      2.36E-03     1.0lE-03 AP         ONS-2     381042006  9/9/2015    BETA         5.64E-02      2.42E-03     1.00E-03 AP         ONS-3     381042007  9/9/2015    BETA         5.52E-02      2.45E-03     1.06E-03 AP         ONS-4     381042008  9/9/2015    BETA         4.67E-02      2.25E-03     l.06E-03 AP         ONS-5     381042009  9/9/2015    BETA         5.31E-02      2.36E-03     1.0lE-03 AP         ONS-6     381042010  9/9/2015    BETA         5.45E-02      2.42E-03     1.04E-03 AP         NBF       381428001 9/16/2015    BETA         2.85E-02       1.74E-03    l.08E-03 AP         SBN       381428002 9/16/2015    BETA         3.21E-02       1.85E-03    1.09E-03 AP         DOW       381428003 9/16/2015    BETA         2.96E-02       1.71E-03    1.0lE-03 AP         COL       381428004 9/16/2015    BETA         2.76E-02       1.72E-03    l.09E-03 AP         ONS-1     381428005 9/16/2015    BETA         3.30E-02       1.88E-03    1.09E-03 AP         ONS-2     381428006 9/16/2015    BETA         2.89E-02       1.78E-03    1.1 lE-03 AP         ONS-3     381428007 9/16/2015    BETA         3.04E-02       1.82E-03    1. lOE-03 AP         ONS-4     381428008 9/16/2015    BETA         2.83E-02       1.74E-03    1.08E-03 AP         ONS-5     381428009 9/16/2015    BETA         2.90E-02       1.77E-03    l. lOE-03 AP         ONS-6     381428010 9/16/2015    BETA         2.95E-02       1.73E-03    1.02E-03 AP         NBF       381831001 9/23/2015    BETA         3.27E-02       1.87E-03    9.79E-04 AP        .SBN       381831002 9/23/2015    BETA         2.78E-02       1.68E-03    9.30E-04 AP         DOW       381831003 9/23/2015    BETA         3.19E-02       l.81E-03    9.41E-04 AP         COL       381831004 9/23/2015    BETA         3.26E-02       1.86E-03    9.80E-04 AP         ONS-1     381831005 9/23/2015    BETA         3.73E-02       1.98E-03    9.60E-04 AP         ONS-2     381831006 9/23/2015    BETA         3.18E-02       1.82E-03    9.54E-04 AP         ONS-3     381831007 9/23/2015    BETA         2.85E-02       1.75E~03    9.94E-04 AP         ONS-4     381831008 9123/2015    BETA         2.92E-02       1.76E-03    9.78E-04 AP         ONS-5     381831009 9/23/2015    BETA         2.84E-02       1.74E-03    9.76E-04 AP         ONS-6     381831010 9/23/2015    BETA         2.73E-02       1.66E-03    9.24E-04 AP         NBF       382263001 9/30/2015    BETA         4.17E-02       2.lOE-03    9.77E-04 AP         SBN       382263002 9/30/2015    BETA         3.48E-02       l.94E-03    1.00E-03 AP         DOW       382263003 9/30/2015    BETA         2.96E-02       1.79E-03    1.0lE-03 AP         COL       382263004 9/30/2015    BETA         3.83E-02       2.02E-03    9.84E-04 AP         ONS-1     382263005 9/30/2015     BETA        3.74E-02       1.97E-03    9.64E-04 AP         ONS-2     382263006 9/30/2015     BETA        3.59E-02       2.00E-03    1.04E-03 AP         ONS-3     382263007 9/30/2015    BETA         3.23E-02       1.83E-03    9.60E-04 AP         ONS-4     382263008 9/30/2015    BETA         3.43E-02       1.90E-03    9.77E-04 AP         ONS-5     382263009 9/30/2015    BETA         4.15E-02       2.08E-03    9.68E-04 AP         ONS-6     382263010 9/30/2015    BETA         3.30E-02       1.86E-03    9.73E-04 D-25

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                     CONC      STD.DEV.        MDC     FLAGS TYPE     STATION       LSN       DATE     NUCLIDE        (pCi/m3)     (pCi/m3)    (pCi/m3)
 . AP       NBF        382890001  101712015   BETA         1.52E-02      1.26E-03    l.02E-03 AP        SBN       382890002  101712015   BETA         1.16E-02      l.14E-03    l.07E-03 AP        DOW       382890003  101712015   BETA         l.34E-02      l.25E-03    l.13E-03 AP        COL       382890004  101712015   BETA         1.48E-02      l.31E-03    l.12E-03 AP        ONS-1     382890005  101712015   BETA         1.47E-02      1.28E-03    l.07E-03 AP        ONS-2     382890006  101712015   BETA         l.34E-02      1.20E-03    1.05E-03 AP        ONS-3     382890007  101712015   BETA         1.25E-02      1: 16E-03   1.03E-03 AP        ONS-4     382890008  101712015   BETA         l.40E-02      1.21E-03    1.02E-03 AP        ONS-5     382890009  101712015   BETA         1.18E-02      l.14E-03    l.06E-03 AP        ONS-6     382890010  101712015   BETA         1.28E-02      l.16E-03    1.0lE-03 AP       NBF        383491001 1011412015   BETA         3.44E-02      1.91E-03    l.03E-03 AP        SBN       383491002 1011412015   BETA         3.20E-02      l.86E-03    1.05E-03 AP        DOW       383491003 1011412015   BETA         3.22E-02     1.82E-03     9.95E-04 AP        COL       383491004 10/14/2015   BETA         3.04E-02      1.77E-03    9.98E-04 AP        ONS-1     383491005 10/14/2015   BETA         3.37E-02      1.92E-03    l.06E-03 AP        ONS-2     383491006 10/14/2015   BETA         3.70E-02      1.97E-03    1.0lE-03 AP        ONS-3     383491007 10/14/2015   BETA         3.34E-02      1.88E-03  . l.03E-03 AP        ONS-4     383491008 1011412015   BETA         2.92E-02      l.72E-03    9.76E-04 AP        ONS-5     383491009 1011412015   BETA         3.65E-02      l.99E-03    l.05E-03 AP        ONS-6     383491010 10/14/2015   BETA         3.79E-02     2.06E-03     l.08E-03 AP       NBF        383944001 1012112015   BETA         2.80E-02      1.71E-03    9.51E-04 AP        SBN       383944002 10/21/2015   BETA         2.78E-02      l.69E-03    9.37E-04 AP,       DOW       383944003 1012112015   BETA         3.05E-02      1.76E-03    9.23E-04 AP        COL       383944004 10/21/2015   BETA         3.08E-02      l.79E-03    9.50E-04 AP        ONS-1     383944005 1012112015   BETA         2.74E-02     1.68E-03     9.36E-04 AP        ONS-2     383944006 1012112015   BETA         3.08E-02      1.76E-03    9.21E-04 AP        ONS-3     383944007 1012112015   BETA         3.04E-02      1.79E-03    9.58E-04 AP        ONS-4     383944008 1012112015   BETA         2.71E-02      1.66E-03    9.33E-04 AP        ONS-5     383944009 1012112015   BETA         3.45E-02      l.86E-03    9.17E-04 AP        ONS-6     383944010 1012112015   BETA         3.08E-02      1.79E-03    9.44E-04 AP       NBF        384389001 10/28/2015   BETA         2.82E-02      l.62E-03    1.23E-03 AP        SBN       384389002 10/28/2015   BETA         3.21E-02      l.73E-03    l.23E-03 AP        DOW       384389003 10/28/2015   BETA         2.44E-02      l.53E-03    1.25E-03 AP        COL       384389004 10/28/2015   BETA         2.62E-02      1.53E~03    l.18E-03 AP        ONS-1     384389005 10/28/2015   BETA         2.53E-02      l.60E-03    l.33E-03 AP        ONS-2     384389006 10/28/2015   BETA         2.68E-02     1.59E-03     l.24E-03 AP        ONS-3     384389007 10/28/2015   BETA         2.41E-02
* 1.47E-03     l.19E-03 AP        ONS-4     384389008 10/28/2015   BETA         2.77E-02      l.57E-03    l.18E-03 AP        ONS-5     384389009 10/28/2015   BETA         2.79E-02     1.64E-03     l.26E-03 AP        ONS-6     384389010 10/28/2015   BETA         2.53E-02      1.55E-03    l.25E-03 AP       NBF        384929001  111412015   BETA         2.40E-02      l.50E-03    l.28E-03 AP        SBN       384929002  111412015   BETA         2.50E-02      1.48E-03    1.20E-03 AP        DOW       384929003  111412015   BETA         2.63E-02      l.54E-03    1.24E-03 AP        COL       384929004  111412015   BETA         2.47E-02      1.48E-03    1.21E-03 AP        ONS-1     384929005  111412015   BETA         2.51E-02      1.51E-03    l.23E-03 AP        ONS-2     384929006  111412015   BETA         2.73E-02      l.58E-03    l.26E-03 AP        ONS-3     384929007  111412015   BETA         2.73E-02      l.57E-03    l.23E-03 AP        ONS-4     384929008  11/4/2015   BETA         2.18E-02      l.41E-03    l.23E-03 AP        ONS-5     384929009  11/4/2015   BETA         2.60E-02      l.57E-03    l.29E-03 AP        ONS-6     384929010  1114/2015   BETA         2.47E-02      1.52E-03    l.28E-03 D-26

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC         FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         NBF       385529001 1111112015   BETA         2.54E-02     l.53E-03    l.26E-03 AP         SBN       385529002 1111112015   BETA         3.08E-02     l.67E-03    l.24E-03 AP         DOW       385529003 11/1112015   BETA         3.0IE-02     l.64E-03    l.23E-03 AP         COL       385529004 11/11/2015   BETA         2.5IE-02     l.53E-03    l.27E-03 AP         ONS-1     385529005 11/1112015   BETA         3.04E-02     l.67E-03    l.26E-03 AP         ONS-2     385529006 11/1112015   BETA         2.96E-02     l.64E-03    l.24E-03 AP         ONS-3     385529007 11/11/2015   BETA         2.96E-02     l.63E-03    l.23E-03 AP         ONS-4     385529008 11/11/2015   BETA         3.06E-02     l.66E-03    l.24E-03 AP         ONS-5     385529009 11/1112015   BETA         3.46E-02     l.79E-03    l.28E-03 AP         ONS-6     385529010 1111112015   BETA         2.92E-02     l.64E-03    l.26E-03 AP         NBF       386093001 11/18/2015   BETA         3.66E-02     l.83E-03    l. l 7E-03 AP         SBN       386093002 11118/2015   BETA         3.52E-02     l.86E-03    l.27E-03 AP         DOW       386093003 11/18/2015   BETA         3.19E-02     l.6IE-03    l.05E-03 AP         COL       386093004 11/18/2015   BETA         3.62E-02     l.82E-03    l.l7E-03 AP         ONS-1     386093005 11/18/2015   BETA         2.93E-02     l.62E-03    l.l5E-03 AP         ONS-2     386093006 11/18/2015   BETA         3.73E-02     l.85E-03    l.l8E-03 AP         ONS-3     386093007 11/18/2015   BETA         3.94E-02     l.90E-03    l.18E-03 AP         ONS-4     386093008 11/18/2015   BETA         3.47E-02     l.78E-03    l.l8E-03 AP         ONS-5     386093009 11/18/2015   BETA         3.46E-02     l.80E-03    l.2IE-03 AP         ONS-6     386093010 11/18/2015   BETA         3.54E-02     l.81E-03    l.l9E-03 AP         NBF       389027001 12/30/2015   Ac-228      -4.85E-04    4.99E-04     l.56E-03   u AP         NBF       389027001 12/30/2015  Ag-108m      -l.37E-04     l.03E-04    2.82E-04   u AP         NBF       389027001 12/30/2015  Ag-llOm       l.53E-04     l.41E-04    5.2IE-04   u AP        NBF        389027001 12/30/2015   Ba-140 .    -6.17E-03    8.6IE-03     2.46E-02   u AP        NBF        389027001 12/30/2015    Be-7        9.93E-02    7.47E-03     4.96E-03 AP         NBF       389027001 12/30/2015   Ce-141      -3.05E-04    4.35E-04     l.31E-03   u AP        NBF        389027001 12/30/2015   Ce-144      -2.15E-05    6.17E-04     2.00E-03   u AP         NBF       389027001 12/30/2015   Co-57       -5.51E-05    7.27E-05     2.23E-04   u AP         NBF       389027001 12/30/2015   Co-58        6.91E-05    2.19E-04     7.39E-04   u AP         NBF       389027001 12/30/2015   Co-60       -l.53E-04     l.38E-04    3.50E-04   u AP         NBF       389027001 12/30/2015    Cr-51       3.62E-04    3.74E-03     l.24E-02   u AP         NBF       389027001 12/30/2015   Cs-134       l.95E-04     l.48E-04    5.25E-04   u AP         NBF       389027001 12/30/2015   Cs-137       l.46E-04     l.08E-04    3.90E-04   u AP         NBF       389027001 12/30/2015    Fe-59       8.78E-04     6.93E-04    2.5IE-03   u AP         NBF       389027001 12/30/2015    1-131      -2.56E-02     l.79E-02    4.79E-02   u AP         NBF       389027001 12/30/2015    K-40        2.70E-03     l.87E-03    6.92E-03   u AP         NBF       389027001 12/30/2015   La-140      -2.88E-03    3.7IE-03     9.70E-03   u AP         NBF       389027001 12/30/2015   Mn-54        8.30E-05     l.47E-04    5.02E-04   u AP         NBF       389027001 12/30/2015   Nb-95        l.09E-04     l.79E-04    5.66E-04   u AP         NBF       389027001 12/30/2015   Ru-103      -7.45E-05    2.7IE-04     8.45E-04   u AP         NBF       389027001 12/30/2015   Ru-106      -8.64E-04     l.03E-03    3.07E-03   u AP         NBF       389027001 12/30/2015   Sb-124       6.26E-04    3.90E-04     l.69E-03   u AP         NBF       389027001 12/30/2015   Sb-125      -7.59E-04    3.52E-04     7.66E-04   u AP         NBF       389027001 12/30/2015    Se-75      -9.43E-05     l.78E-04    5.74E-04   u AP         NBF       389027001 12/30/2015   Th-228       2.9IE-04     l.80E-04    6.09E-04   u AP         NBF       389027001 12/30/2015    Zn-65      -6.05E-05    2.77E-04     8.98E-04   u AP         NBF       389027001 12/30/2015    Zr-95       l.94E-04    3.09E-04     l.09E-03   u AP         SBN       389027002 12/30/2015   Ac-228       5.22E-04     5.38E-04    l.96E-03   u AP         SBN       389027002 12/30/2015  Ag-108m      -3.28E-05    7.27E-05     2.23E-04   u AP         SBN       389027002 12/30/2015  Ag-llOm      -2.37E-04     l.83E-04    4.56E-04   u D-27

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         SBN       389027002 12/30/2015   Ba-140       2.15E-03     8.50E-03    2.81E-02 u AP         SBN       389027002 12/30/2015    Be-7        8.97E-02    7.42E-03     5.24E-03 AP         SBN       389027002 12/30/2015   Ce-141       8.0lE-04    6.69E-04     l.35E-03 u AP         SBN       389027002 12/30/2015   Ce-144       7.82E-04     5.32E-04    1.77E-03 u.
AP         SBN       389027002 12/30/2015   Co-57        5.74E-05    7.llE-05     2.37E-04 u AP         SBN       389027002 12/30/2015   Co-58       -1.35E-04     1.67E-04    4.74E-04 u AP         SBN       389027002 12/30/2015   Co-60        9.23E-05     1.47E-04    5.26E-04 u AP         SBN       389027002 12/30/2015    Cr-51      -4.31E-03    3.35E-03     9.48E-03 u AP         SBN       389027002 12/30/2015   Cs-134       l.17E-06    9.46E-05     3.13E-04 u AP.        SBN'      389027002 12/30/2015   Cs-137       3.07E-05    9.46E-05     3.28E-04 u AP         SBN       389027002 12/30/2015    Fe-59       1.95E-04     5.12E-04    1.75E-03 u AP         SBN       389027002 12/30/2015    1-131       3.36E-03     1.79E-02    5.29E-02 u AP         SBN       389027002 12/30/2015    K-40        3.22E-03     1.58E-03    2.80E-03 UI AP         SBN       389027002 12/30/2015   La-140      -l.52E-03    2.57E-03     6.75E-03 u AP         SBN       389027002 12/30/2015   Mn-54        3.74E-05     l.23E-04    4.17E-04 u AP         SBN       389027002 12/30/2015   Nb-95       -1.06E-05     1.32E-04    3.69E-04 u AP         SBN       389027002 12/30/2015   Ru-103      -2.12E-04    2.85E-04     8.37E-04 u AP         SBN       389027002 12/30/2015   Ru-106      -8.67E-05     l.20E-03    4.00E-03 u AP         SBN.      389027002 12/30/2015   Sb-124      -1.29E-04     5.23E-04    l.61E-03 u AP         SBN       389027002 12/30/2015   Sb-125       2.16E-04    2.86E-04     9.77E-04 u AP         SBN       389027002 12/30/2015    Se-75       9.80E-05     1.6&sect;E-04    5.71E-04 u AP         SBN       389027002 12/30/2015   Th-228      -8.35E-05     1.65E-04    5.50E-04 u AP         SBN       389027002 12/30/2015    Zn-65      -1.54E-04     3.llE-04    9.19E-04 u AP         SBN       389027002 12/30/2015    Zr-95       1.59E-04    2.59E-04     9.28E-04 u AP         DOW       389027003 12/30/2015   Ac-228      -5.22E-04     6.75E-04    2.17E-03 u AP         DOW       389027003 12/30/2015  Ag-108m       8.73E-05     l.56E-04    4.76E-04 u AP         DOW       389027003 12/30/2015  Ag-llOm       3.08E-04    2.38E-04     8.54E-04 u AP         DOW       389027003 12/30/2015   Ba-140      -4.63E-03     l.40E-02    4.18E-02 u AP         DOW       389027003 12/30/2015    Be-7        9.76E-02     8.54E-03    7.33E-03 AP         DOW       389027003 12/30/2015   Ce-141      -9.31E-05     5.44E-04    1.78E-03 u AP         DOW       389027003 12/30/2015   Ce-144       l.53E-03     1.00E-03    2.50E-03 u AP         DOW       389027003 12/30/2015   Co-57        3.48E-05     8.91E-05    3.00E-04 u AP         DOW       389027003 12/30/2015   Co-58       -1.28E-04    2.70E-04     7.59E-04 u AP         DOW       389027003 12/30/2015   Co-60       -5.61E-05     l.38E-04    4.16E-04 u AP         DOW       389027003 12/30/2015    Cr-51       8.85E-03     5.16E-03    l.74E-02 u AP         DOW       389027003 12/30/2015   Cs-134       1.60E-04     l.79E-04    6.34E-04 u AP         DOW       389027003 12/30/2015   Cs-137       6.20E-05     l.37E-04    4.62E-04 u AP         DOW       389027003 12/30/2015    Fe-59       7.28E-05     6.76E-04    2.26E-03 u AP         DOW       389027003 12/30/2015    1-131       l.09E-02     2.72E-02    9.29E-02 u AP         DOW       389027003 12/30/2015    K-40        2.17E-03     1.57E-03    3.72E-03 u AP         DOW       389027003 12/30/2015   La-140      -5.62E-03     3.76E-03    7.00E-03 u AP         DOW       389027003 12/30/2015   Mn-54        1.28E-04     l.56E-04    5.52E-04 u AP         DOW       389027003 12/30/2015   Nb-95       -3.74E-04     2.45E-04    5.81E-04 u AP         DOW       389027003 12/30/2015   Ru-103       8.0lE-04     4.52E-04    1.40E-03 u AP         DOW       389027003 12/30/2015   Ru-106       l.39E-03     l.41E-03. 4.86E-03 u AP         DOW       389027003 12/30/2015   Sb-124       2.41E-05     5.42E-04    1.82E-03 u AP         DOW       389027003 12/30/2015   Sb-125      -5.46E-04     4.18E-04    1.21E-03 u AP         DOW       389027003 12/30/2015    Se-75       2.16E-04     2.25E-04    7.46E-04 u AP         DOW       389027003 12/30/2015   Th-228       3.82E-04     2.28E-04    7.45E-04 u AP         DOW       389027003 12/30/2015    Zn-65      -8.0lE-04     4.70E-04    l.12E-03 u D-28

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         DOW       389027003 12/30/2015    Zr-95       4.24E-04    4.93E-04     l.69E-03  u AP         COL       389027004 12/30/2015   Ac-228       8.39E-05    4.20E-04     1.51E-03  u AP         COL       389027004 12/30/2015  Ag-108m      -8.33E-05    8.75E-05     2.49E-04  u AP         COL       389027004 12/30/2015  Ag-llOm      -1.66E-04     l.63E-04    4.19E-04  u AP         COL       389027004 12/30/2015   Ba-140       1.68E-02     l.OlE-02    3.55E-02  u AP         COL       389027004 12/30/2015    Be-7        8.39E-02    7.1 lE-03    2.79E-03 AP         COL       389027004 12/30/2015   Ce-141      -5.lOE-05    3.69E-04     l.23E-03  u AP         COL       389027004 12/30/2015   Ce-144      -2.92E-04    5.03E-04     1.63E-03  u AP         COL       389027004 12/30/2015   Co-57        3.98E-06    7.22E-05     2.45E-04  u AP         COL       389027004 12/30/2015   Co-58       -3.74E-04     1.84E-04    3.34E-04  u AP         COL       389027004 12/30/2015   Co-60        l.36E-04     1.20E-04    4.51E-04  u AP         COL       389027004 12/30/2015    Cr-51      -4.73E-03    3.16E-03     8.34E-03  u AP         COL       389027004 12/30/2015   Cs-134       l.24E-04     1.56E-04    4.83E-04  u AP         COL       389027004 12/30/2015   Cs-137       7.40E-05    8.92E-05     3.17E-04  u AP         COL       389027004 12/30/2015    Fe-59       2.09E-04    4.95E-04     1.75E-03  u AP         COL       389027004 12/30/2015    1-131      -7.37E-04     1.80E-02    5.79E-02  u AP         COL       389027004 12/30/2015    K-40        2.04E-03     l.72E-03    6.58E-Q3  u AP         COL       389027004 12/30/2015   La-140      -4.51E-03    3.93E-03     9.52E-03  u AP         COL       389027004 12/30/2015   Mn-54        l.85E-04     1.30E-04    4.40E-04  u AP         COL       389027004 12/30/2015   Nb-95       -3.80E-04    2.37E-04     5.75E-04  u AP        .COL       389027004 12/30/2015   Ru-103      -3.05E-04    2.47E-04     6.99E-04  u AP         COL       389027004 12/30/2015   Ru-106      -5.61E-04    8.58E-04     2.61E-03  u AP         COL       389027004 12/30/2015   Sb-124       9.56E-05    4.98E-04     1.69E-03  u AP         COL       389027004 12/30/2015   Sb-125       4.76E-04    3.04E-04     1.00E-03  u AP         COL       389027004 12/30/2015    Se-75       l.08E-04     l.74E-04    5.85E-04  u AP         COL       389027004 12/30/2015   Th-228      -2.57E-04     l.69E-04    4.93E-04  u AP         COL       389027004 12/30/2015   Zn-65        l.76E-04    2.30E-04     8.44E-04  u AP         COL       389027004 12/30/2015    Zr-95      -3.60E-04    3.67E-04     1.04E-03  u AP         ONS-1     389027005 12/30/2015   Ac-228       l.22E-04    6.26E-04     2.12E-03  u AP         ONS-1     389027005 12/30/2015  Ag-108m       7.61E-06     l.02E-04    3.53E-04  u AP         ONS-1     389027005 12/30/2015  Ag-llOm      -3.49E-04    2.69E-04     6.67E-04  u AP         ONS-1     389027005 12/30/2015   Ba-140       1.52E-02     1.35E-02    4.83E-02  u AP         ONS-1     389027005 12/30/2015    Be-7        8.18E-02    7.49E-03     8.91E-03 AP         ONS-1     389027005 12/30/2015   Ce-141       1.43E-05    3.38E-04     l. lOE-03 u AP         ONS-1     389027005 12/30/2015   Ce-144       4.84E-04    4.96E-04     1.69E-03  u AP         ONS-1     389027005 12/30/2015   Co-57       -4.18E-05    6.39E-05     l.99E-04  u AP         ONS-1     389027005 12/30/2015   Co-58        3.02E-04    2.39E-04     8.98E-04  u AP         ONS-1     389027005 12/30/2015   Co-60        3.49E-04    2.03E-04     8.02E-04  u AP         ONS-.1    389027005 12/30/2015    Cr-51      -l.35E-03    3.76E-03     1.19E-0:2 u AP         ONS-1     389027005 12/30/2015   Cs-134      -4.20E-04    2.13E-04     4.24E-04  u AP         ONS-1     389027005 12/30/2015   Cs-137      -l.32E-04     l.42E-04    3.83E-04  u AP         ONS-1     389027005 12/30/2015    Fe-59       l.95E-04    5.91E-04     2.05E-03  u AP         ONS-1     389027005 12/30/2015    1-131      -1.58E-02    2.23E-02     6.61E-02  u AP         ONS-1     389027005 12/30/2015    K-40        l.48E-03    2.49E-03     9.43E-03  u AP         ONS-1     389027005 12/30/2015   La-140       7.40E-03    4.61E-03     1.99E-02  u AP         ONS-1     389027005 12/30/2015   Mn-54       -3.94E-05     l.78E-04    5.75E-04  u AP         ONS-1     389027005 12/30/2015   Nb-95        4.30E-04    2.82E-04     l.05E-03  u AP         ONS-1     389027005 12/30/2015   Ru-103       4.68E-04    3.83E-04     l.37E-03  u AP         ONS-1     389027005 12/30/2015   Ru-106      -9.99E-04     l.34E-03    3.86E-03  u AP         ONS-1     389027005 12/30/2015   Sb-124      -3.19E-04    9.81E-04     3.05E-03  u D-29

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-1     389027005 12/30/2015   Sb-125       2.88E-04    3.29E-04     l.18E-03 u AP         ONS-1     389027005 12/30/2015    Se-75       5.87E-05    2.05E-04     6.95E-04 u AP         ONS-1     389027005 12/30/2015   Th-228      -4.67E-05    2.22E-04     6.43E-04 u AP         ONS-1     389027005 12/30/2015    Zn-65      -l.32E-04    6.22E-04     l.96E-03 u AP         ONS-1     389027005 12/30/2015    Zr-95      -l.65E-04    5.64E-04     l.83E-03 u AP         ONS-2     389027006 12/30/2015   Ac-228       5.49E-04    5.78E-04     2.07E-03 u AP         ONS-2     389027006 12/30/2015  Ag-108m       4.76E-05    9.35E-05     3.18E-04 u AP         ONS-2     389027006 12/30/2015  Ag-llOm      -3.15E-04     l.87E-04    4.40E-04 u AP         ONS-2     389027006 12/30/2015   Ba-140      -l.27E-02    9.81E-03     2.62E-02 u AP         ONS-2     389027006 12/30/2015    Be-7        8.97E-02    7.40E-03     5.27E-03 AP         ONS-2     389027006 12/30/2015   Ce-141       5.61E-04    7.14E-04     l.38E-03 u AP         ONS-2     389027006 12/30/2015   Ce-144      -2.30E-04    5.89E-04     l.87E-03 u AP         ONS-2     389027006 12/30/2015   Co-57        l.34E-04    7.63E-05     2.06E-04 u AP         ONS-2     389027006 12/30/2015   Co-58       -1.08E-04    2.05E-04     6.48E-04 u AP         ONS-2     389027006 12/30/2015   Co-60       -3.45E-05     l.78E-04    5.64E-04 u AP         ONS-2     389027006 12/30/2015    Cr-51      ~2.93E-03    3.36E-03     l.04E-02 u AP         ONS-2     389027006 12/30/2015   Cs-134       l.77E-04     l.36E-04    4.91E-04 u AP         ONS-2     389027006 12/30/2015   Cs-137      -l.OSE-04     l.llE-04    3.IOE-04 u AP         ONS-2     389027006 12/30/2015    Fe~59      -l.45E-03    8.05E-04     l.22E-03 u AP         ONS-2     389027006 12/30/2015    I-131       2.13E-02     l.97E-02    6.80E-02 u AP         ONS-2     389027006 12/30/2015    K-40        l.03E-03     l.SOE-03    2.66E-03 u AP         ONS-2     389027006 12/30/2015   La-140       6.55E-04    4.71E-03     l.61E-02 u AP         ONS-2     389027006 12/30/2015   Mn-54        2.95E-05     l.17E-04    4.02E-04 u AP         ONS-2     389027006 12/30/2015   Nb-95        3.67E-04    2.09E-04     7.55E-04 u AP         ONS-2     389027006 12/30/2015   Ru-103       l.54E-05    2.48E-04     8.17E-04 u AP         ONS-2     389027006 12/30/2015   Ru-106       l.llE-03     LllE-03     3.82E-03 u AP         ONS-2     389027006 12/30/2015   Sb-124       7.94E-04    5.IOE-04     2.04E-03 u AP         ONS-2     389027006 12/30/2015   Sb-125      -8.83E"05    2.79E-04     8.98E-04 u AP         ONS-2     389027006 12/30/2015    Se-75       l.65E-04     l.81E-04    6.29E-04 u AP         ONS-2     389027006 12/30/2015   Th-228      -8.27E-05     l.77E-04    5.69E-04 u AP         ONS-2     389027006 12/30/2015    Zn-65       l.87E-04    2.47E-04     8.90E-04 u AP         ONS-2     389027006 12/30/2015    Zr-95       l.75E-04    3.36E-04     l.18E-03 u AP         ONS-3     389027007 12/30/2015   Ac-228      -l.39E-04    4.32E-04     l.55E-03 u AP         ONS-3     389027007 12/30/2015  Ag-108m      -4.07E-05    9.92E-05     2.70E-04 u AP         ONS-3     389027007 12/30/2015  Ag-llOm      -2.48E-04     l.72E-04    4.22E-04 u AP         ONS-3     389027007 12/30/2015   Ba-140       6.27E-04     8.89E-03    2.90E-02 u AP         ONS-3     389027007 12/30/2015    Be-7        8.90E-02    7.IIE-03     4.69E-03 AP         ONS-3     389027007 12/30/2015   Ce-141       9.88E-05    4.58E-04     l.42E-03 u AP         ONS-3     389027007 12/30/2015   Ce-144       l.75E-04    4.99E-04     l.64E-03 u AP         ONS-3     389027007 12/30/2015    Co-57       l.76E-05     6.30E-05    2.07E-04 u AP         ONS-3     389027007 12/30/2015    Co-58       3.98E-05     l.80E-04    6.12E-04 u AP         ONS-3     389027007 12/30/2015    Co-60       4.45E-05     l.52E-04    5.08E-04 u AP         ONS-3     389027007 12/30/2015    Cr-51      -2.87E-03     3.55E-03    l.IOE-02 u AP         ONS-3     389027007 12/30/2015   Cs-134      -2.68E-05     l.15E-04    3.60E-04 u AP         ONS-3     389027007 12/30/2015   Cs-137      -5.87E-O~     8.66E-05    2.64E-04 u AP         ONS-3     389027007 12/30/2015    Fe-59      -5.39E-04     5.47E-04    l.47E-03 u AP         ONS-3     389027007 12/30/2015    I-131       7.00E-03     l.65E-02    5.62E-02 u AP         ONS-3     389027007 12/30/2015    K-40        4.27E-04     l.47E-03    6.04E-03 u AP         ONS-3     389027007 12/30/2015   La-140      -l.06E-04     3.l IE-03   l.03E-02 u AP         ONS-3     389027007 12/30/2015   Mn-54        l.51E-04     l.24E-04    4.48E-04 u D-30

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         ONS-3     389027007 12/30/2015    Nb-95       3.87E-05     l.68E-04    5.77E-04  u AP         ONS-3     389027007 12/30/2015    Ru-103      3.99E-04    2.74E-04     9.54E-04  u AP         ONS-3     389027007 12/30/2015    Ru-106       l.29E-03   8.58E-04     3.09E-03  u AP         ONS-3     389027007 12/30/2015    Sb-124      3.63E-06    2.78E-04     9.23E-04  u AP         ONS-3     389027007 12/30/2015    Sb-125     -5.68E-05    2.72E-04     8.76E-04  u AP         ONS-3     389027007 12/30/2015     Se-75     -l.76E-04     l.59E-04    4.80E-04  u AP         ONS-3     389027007 12/30/2015    Th-228       l.44E-04    l.72E-04    6.07E-04  u AP         ONS-3     389027007 12/30/2015    Zn-65       2.16E-04    3.24E-04     1.13E-03  u AP         ONS-3     389027007 12/30/2015     Zr-95     -4.98E-06    3.12E-04     l.04E-03  u AP         ONS-4     389027008 12/30/2015    Ac-228     -3.25E-04    5.llE-04     l.70E-03  u AP         ONS-4     389027008 12/30/2015  Ag-108m      -1.03E-04     l.05E-04    2.99E-04  u AP         ONS-4     389027008 12/30/2015  Ag-llOm      -6.57E-05     l.54E-04    4.65E-04  u AP         ONS-4     389027008 12/30/2015    Ba-140      3.59E-03    7.49E-03     2.64E-02  u AP         ONS-4     389027008 12/30/2015     Be-7       8.28E-02    6.93E-03     5.98E-03 AP         ONS-4     389027008 12/30/2015    Ce-141     -3.79E-04    4.93E-04     l.54E-03  u AP         ONS-4     389027008 12/30/2015    Ce-144      3.86E-04     5.95E-04    2.04E-03  u AP         ONS-4     389027008 12/30/2015    Co-57       3.17E-05     8.14E-05    2.76E-04  u AP         ONS-4     389027008 12/30/2015    Co-58       2.75E-06    2.0IE-04     6.60E-04  u AP         ONS-4     389027008 12/30/2015    Co-60      -7. l IE-05   l.62E-04    5.05E-04  u AP         ONS-4     389027008 12/30/2015     Cr-51      9.03E-03    4.80E-03     l.12E-02  u AP         ONS-4     389027008 12/30/2015    Cs-134      5.79E-05     l.17E-04    4.06E-04  u AP         ONS-4     389027008 12/30/2015    Cs-137      2.55E-05     l.20E-04    4.06E-04  u AP         ONS-4     389027008 12/30/2015     Fe-59     -6.38E-05     5.59E-04    l.85E-03  u AP         ONS-4     389027008 12/30/2015     I-131      2.48E-02    2.07E-02     7.02E-02  u AP         ONS-4     389027008 12/30/2015     K-40       2.0IE-03     l.33E-03    4.05E-03  u AP         ONS-4     389027008 12/30/2015    La-140     -2.98E-03     3.05E-03    6.88E-03  u AP         ONS-4     389027008 12/30/2015    Mn-54      -1.85E-04     l.61E-04    3.39E-04  u AP         ONS-4     389027008 12/30/2015    Nb-95       4.20E-05    2.15E-04     7.20E-04  u AP         ONS-4     389027008 12/30/2015    Ru-103       1.38E-04   2.96E-04     l.03E-03  u AP         ONS-4     389027008 12/30/2015    Ru-106       l.76E-03    l.12E-03    3.02E-03  u AP         ONS-4     389027008 12/30/2015    Sb-124       8.66E-04    7.35E-04    2.73E-03  u AP         ONS-4     389027008 12/30/2015    Sb-125       l.25E-04    3.37E-04    l.1 IE-03 u AP         ONS    389027008 12/30/2015     Se-75       l.53E-04    2.0IE-04    6.77E-04  u AP         ONS-4     389027008 12/30/2015    Th-228       9.15E-05    l.95E-04    6.53E-04  u AP         ONS-4     389027008 12/30/2015    Zn-65       -5.51E-05    2.88E-04    9.43E-04  u AP         ONS-4     389027008 12/30/2015     Zr-95       6.08E-04    3.40E-04    l.26E-03  u AP         ONS-5     389027009 12/30/2015    Ac-228       5.46E-04    6.75E-04    2.69E-03  u AP         ONS-5     389027009 12/30/2015   Ag-108m      -6.16E-05    l.15E-04    3.52E-04  u AP         ONS-5     389027009 12/30/2015   Ag-1 lOm      l.71E-04    2.62E-04    9.34E-04  u AP         ONS-5     389027009 12/30/2015    Ba-140      4.49E-03     l.21E-02    4.l IE-02 u AP         ONS-5     389027009 12/30/2015     Be-7        8.22E-02    8.85E-03    6.02E-03 AP         ONS-5     389027009 12/30/2015    Ce-141      -6.08E-04    6.72E-04    l.82E-03  u AP         ONS-5     389027009 12/30/2015    Ce-144      -9.33E-04    7.llE-04    2.03E-03  u AP         ONS-5     389027009 12/30/2015    Co-57       -1.09E-04    8.87E-05    2.59E-04  u AP         ONS-5     389027009 12/30/2015    Co--58      -l.17E-04    2.06E-04    6.18E-04  u AP         ONS-5     389027009 12/30/2015    Co-60        l.57E-04    2.03E-04    7.51E-04  u AP         ONS-5     389027009 12/30/2015     Cr-51       4.29E-03    5.42E-03    l.89E-02  u AP         ONS-5     389027009 12/30/2015    Cs-134       2.27E-04    l.96E-04    7.18E-04  u AP         ONS-5     389027009 12/30/2015    Cs-137       5.99E-05    1.34E-04    4.57E-04  u AP         ONS-5     389027009 12/30/2015     Fe-59      -9.84E-04    7.49E-04    1.54E-03  u D-31

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION        LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
AP         ONS-5     389027009  12/30/2015    I-131       9.70E-03    2.59E-02     8.87E-02  u AP         ONS-5     389027009  12/30/2015    K-40       -2.55E-04    2.15E-03     8.06E-03  u AP         ONS-5     389027009  12/30/2015   La-140       l.34E-04    5.79E-04     2.69E-03  u AP         ONS-5      389027009 12/30/2015   Mn-54       -8.9IE~o5     l.94E-04    6.04E-04  u AP         ONS-5      389027009 12/30/2015   Nb-95        5.06E-04    2.53E-04     9.81E-04  u AP         ONS-5      389027009 12/30/2015   Ru-103      -l.36E-04    3.45E-04     1.07E-03  u AP         ONS-5     389027009  12/30/2015   Ru-106      -l.72E-03     1.50E-03    3.SOE-03  u AP         ONS-5     389027009  12/30/2015   Sb-124      -l.18E-03     1.06E-03    2.51E-03  u AP         ONS-5     389027009  12/30/2015   Sb-125      -l.18E-04    3.46E-04     1.lOE-03  u AP         ONS-5     389027009  12/30/2015    Se-75      -2.32E-04    2.09E-04     6.28E-04  u AP         ONS-5      389027009 12/30/2015   Th-228       6.17E-06    2.47E-04     7.78E-04  u AP        ONS-5      389027009  12/30/2015   Zn-65       -4.00E-05    3.44E-04     l.09E-03  u AP         ONS-5     389027009  12/30/2015    Zr-95       8.69E-04    5.50E-04     2.05E-03  u AP         ONS-6     ,389027010 12/30/2015   Ac-228       6.12E-04    5.83E-04     2.09E-03  u AP         ONS-6     389027010  12/30/2015  Ag-108m      -1.23E-04     l.07E-04    2.89E-04  u AP         ONS-6     389027010  12/30/2015  Ag-llOm       4,09E-05    2.04E-04     6.97E-04  u AP         ONS-6     389027010  12/30/2015   Ba-140      -4.87E-03     l.16E-02    3.68E-02  u AP        ONS-6      389027010  12/30/2015    Be-7        9.75E-02    7.81E-03     6.26E-03 AP        ONS-6      389027010  12/30/2015   Ce-141      -3.89E-05    3.94E-04     l.26E-03  u AP         ONS-6     389027010  12/30/2015   Ce-144       8.93E-04    6.60E-04     l.66E-03  u AP         ONS-6     389027010  12/30/2015   Co-57       -6.19E-05    7.SOE-05     2.36E-04  u AP         ONS-6     389027010  12/30/2015   Co-58        1.58E-04    2.09E-04     6.84E-04  u AP         ONS-6     389027010  12/30/2015   Co-60        5.61E-05     l.llE-04    4.0SE-04  u AP        ONS-6      389027010  12/30/2015    Cr-51      -2.95E-03    4.26E-03     l.31E-02  u AP        ONS-6      389027010  12/30/2015   Cs-134       1.07E-04     1.25E-04    4.45E-04  u AP        ONS-6      389027010  12/30/2015   Cs-137       8.16E-05     1.02E-04    3.64E-04  u AP         ONS-6     389027010  12/30/2015    Fe-59      -l.15E-03    6.02E-04     8.65E-04  u AP         ONS-6     389027010  12/30/2bl5    I-131       3.37E-03    2.13E-02     7.00E-02  u AP         ONS-6     389027010  12/30/2015    K-40       -2.97E-04     1.79E-03    6.63E-03  u AP        ONS-6      389027010  12/30/2015   La-140       5.03E-03    5.79E-03     2.lOE-02  u AP        ONS-6      389027010  12/30/2015   Mn-54       -l.73E-04     1.51E-04    4.20E-04  u AP        ONS-6      389027010  12/30/2015   Nb-95        3.16E-04    2.17E-04     7.89E-04  u AP         ONS-6     389027010  12/30/2015   Ru-103       6.88E-04    3.53E-04     l.23E-03  u AP         ONS-6     389027010  12/30/2015   Ru-106       3.00E-04     l.20E-03    4.03E-03  u
 .AP         ONS-6     389027010  12/30/2015   Sb-124      -3.0lE-04    7.87E-04     2.39E-03  u AP        ONS-6      389027010  12/30/2015   Sb-125       3.39E-04    3.04E-04     l.05E-03  u AP        ONS-6      389027010  12/30/2015    Se-75      -9.34E-05     l.68E-04    5.32E-04  u AP        ONS-6      389027010  12/30/2015   Th-228      -4.40E-04    2.0SE-04     5.53E-04  u AP         ONS-6     389027010  12/30/2015   Zn-65        1.78E-04    3.41E-04     l.19E-03  u AP         ONS-6     389027010  12/30/2015    Zr-95       7.07E-04    3.95E-04     l.45E-03  u AP        NBF        386425001  11/25/2015   BETA         2.46E-02     1.48E-03    l. lOE-03 AP         SBN       386425002  11/25/2015   BETA         2.lOE-02     1.35E-03    l.06E-03 AP        DOW        386425003  11/25/2015   BETA         2.20E-02     l.38E-03    1.05E-03 AP        COL        386425004  11/25/2015   BETA         2.16E-02     l.40E-03    l.lOE-03 AP         ONS-1     386425005  11/25/2015   BETA         2.24E-02     l.45E-03    1.14E-03 AP         ONS-2     386425006  11/25/2015   BETA         2.30E-02     1.42E-03    l.O'?E-03 AP        ONS-3      386425007  11/25/2015   BETA         2.07E-02     l.38E-03    l.12E-03 AP        ONS-4      386425008  11/25/2015   BETA         1.91E-02     1.32E-03    1.lOE-03 AP        ONS-5      386425009  11/25/2015   BETA         l.86E-02 . 1.32E-03    l.13E-03 AP         ONS-6     386425010  11/25/2015   BETA         2.28E-02     l.44E-03    l.1 lE-03 D-32

Donald C. Cook Nuclear Plant             Annual Radiological Environmental Operating Report 2015 SAMPLE                               END                      CONC      STD.DEV.       MDC      FLAGS TYPE      STATION       LSN         DATE     NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
AP         NBF       386774001    12/2/2015   BETA         2.57E-02     l.52E-03    1.IOE-03 AP         SBN       386774002    12/2/2015   BETA         2.21E-02     l.45E-03    1.15E-03 AP         DOW       386774003    12/2/2015   BETA         2.19E-02     l.43E-03    1.12E-03 AP         COL       386774004    12/2/2015   BETA         2.17E-02     l.39E-03    1.0SE-03 AP         ONS-1     386774005    12/2/2015   BETA         2.65E-02     l.53E-03    l.07E-03 AP         ONS-2     386774006    12/2/2015   BETA         2.26E-02     1.45E-03    l.12E-03 AP         ONS-3     386774007    12/2/2015   BETA         2.61E-02     l.51E-03    l.07E-03 AP         ONS-4     386774008    12/2/2015   BETA         2.69E-02     1.53E-03    l.06E-03 AP         ONS-5     386774009    12/2/2015   BETA         2.49E-02     l.49E-03    1.0SE-03 AP         ONS-6     386774010    12/2/2015   BETA         2.61E-02     l.52E-03    l.07E-03 AP         NBF       387341001    12/9/2015   BETA         4.90E-02    2.llE-03     l.12E-03 AP         SBN       387341002    12/9/2015   BETA         4.51E-02    2.0IE-03     l.12E-03 AP        DOW        387341003    12/9/2015   BETA         4.34E-02    2.00E-03     1.15E-03 AP         COL       387341004    12/9/2015   BETA         4.46E-02    2.0lE-03     1.12E-03 AP         ONS-1     387341005    12/9/2015   BETA         4.30E-02     l.96E-03    l.1 IE-03 AP         ONS-2     387341006    12/9/2015   BETA         4.49E-02    2.05E-03     l.16E-03 AP         ONS-3     387341007    12/9/2015   BETA         4.46E-02     l.96E-03    l.07E-03 AP         ONS-4     387341008    12/9/2015   BETA         4.78E-02    2.06E-03     1.IOE-03 AP         ONS-5     387341009    12/9/2015   BETA         4.37E-02    2.03E-03     l.18E-03 AP         ONS-6     387341010    12/9/2015   BETA         4.82E-02    2.12E-03     l.15E-03 AP         NBF       387887001   12/16/2015   BETA         3.18E-02     l.72E-03    l.19E-03 AP         SBN       387887002   12/16/2015   BETA         3.19E-02     l.76E-03    l.25E-03 AP         DOW       387887003   12/16/2015   BETA         3.17E-02     l.73E-03    1.22E-03 AP-       COL        387887004   12/16/2015   BETA         2.91E-02     l.63E-03    l.17E-03 AP         ONS-1     387887005   12/16/2015   BETA         3.23E-02     l.71E-03    1.16E-03 AP         ONS-2     387887006   12/16/2015   BETA         3.09E-02     l.72E-03    l.23E-03 AP         ONS-3     387887007   12/16/2015   BETA         3.16E-02     l.69E-03    l.17E-03 AP         ONS-4     387887008   12/16/2015   BETA         2.99E-02     l.63E-03    l.14E-03 AP         ONS-5     387887009   12/16/2015   BETA         3.34E-02     l.74E-03    l.16E-03 AP         ONS-6     387887010   12/16/2015   BETA         3.09E-02     l.71E-03    l.22E-03 AP        NBF        388145001   12/23/2015   BETA         2.60E-02     l.52E-03    l.1 IE-03 AP         SBN       388145002   12/23/2015   BETA         2.69E-02     l.57E-03    1.14E-03 AP         DOW       388145003   12/23/2015   BETA         2.91E-02     l.62E-03    l.12E-03 AP         COL       388145004   12/23/2015   BETA         2.83E-02     l.61E-03    1.14E-03 AP         ONS-1     388145005   12/23/2015   BETA         2.78E-02     l.57E-03    1.1 IE-03 AP        ONS-2      388145006   12/23/2015   BETA         3.12E-02     l.70E-03    l.15E-03 AP        ONS-3      388145007   12/23/2015   BETA         2.88E-02     l.62E-03    l.14E-03 AP        ONS-4      388145008   12/23/2015   BETA         3.02E-02     l.65E-03    l.12E-03 AP         ONS-5     388145009   12/23/2015   BETA         3.33E-02     l.73E-03    l.12E-03 AP         ONS-6     388145010   12/23/2015   BETA         3.02E-02     l.67E-03    l.15E-03 AP        NBF        388629001   12/30/2015   BETA         l.99E-02     l.35E-03    l.18E-03 AP         SBN       388629002   12/30/2015   BETA         2.02E-02     l.35E-03    l.17E-03 AP        DOW        388629003   12/30/2015   BETA         2.09E-02     l.39E-03    1.20E-03 AP         COL       388629004   12/30/2015   BETA         l.92E-02     l.29E-03    l.13E-03 AP         ONS-1     388629005   12/30/2015   BETA         2.59E-02     l.76E-03    l.56E-03 AP         ONS-2     388629006   12/30/2015   BETA         2.03E-02     l.39E-03    l.24E-03 AP        ONS-3      388629007   12/30/2015   BETA         2.04E-02     l.30E-03    1.0SE-03 AP        ONS-4      388629008   12/30/2015   BETA         2.14E-02     l.36E-03    l.13E-03 AP        ONS-5      388629009   12/30/2015   BETA         2.14E-02     l.37E-03    l.14E-03 AP        ONS-6      388629010
* 12/30/2015   BETA         2.07E-02     1.36E-03    l.17E-03 D-33

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
CF        NBF        364598012  117/2015     1-131       6.06E-03    8.06E-03     2.83E-02 u CF         SBN       364598013  1/7/2015     1-131      -5.0lE-03    4.77E-03     1.09E-02 u CF         DOW       364598014  117/2015     1-131       3.98E-03    4.18E-03     1.65E-02 u CF         COL       364598015  1/7/2015     1-131      -9.90E-03    6.88E-03     1.48E-02 u CF         ONS-1     364598016  117/2015     1-131       5.26E-03    5.87E-03     2.09E-02 u CF         ONS-2     364598017  117/2015     1-131      -3.86E-03    5.91E-03     1.71E-02 u CF         ONS-3     364598018  117/2015     1-131      -l.92E-03    4.98E-03     l.53E-02 u CF         ONS-4     364598019  117/2015     1-131       7.46E-03    4.89E-03     l.86E-02 u CF         ONS-5     364598020  117/2015     1-131      -l.86E-03    2.81E-03     6.96E-03 u CF         ONS-6     364598021  117/2015     I-131       7.61E-03    7.94E-03     2.89E-02 u CF        NBF        365202012 1114/2015     1-131      -6.72E-03    5.09E-03     l.15E-02 u CF         SBN       365202013 1/14/2015     1-131      -9.74E-03    7.35E-03     l.80E-02 u CF        DOW        365202014 1/14/2015     1-131      -5.52E-03    5.48E-03     1.43E-02 u CF         COL       365202015 1/14/2015     1-131       5.39E-03    6.00E-03     2.12E-02 u CF         ONS-1     365202016 1/14/2015     1-131      -2.05E-03    4.56E-03     l.36E-02 u CF         ONS-2     365202017 1/14/2015     1-131      -l.57E-03    4.89E-03     l.53E-02 u CF         ONS-3     365202018 1/14/2015     1-131       2.66E-03    5.81E-03     1.99E-02 u CF         ONS-4     365202019 1/14/2015     1-131       3.04E-03    6.30E-03     2.18E-02 u CF         ONS-5     365202020 1/14/2015     1-131      -4.35E-03    5.49E-03     l.57E-02 u CF         ONS-6     365202021 1/14/2015     I-131      -l.03E-03    4.18E-03     l.32E-02 u CF        NBF        365672012 1/21/2015     I-131       2.88E-03    4.65E-03     l.59E-02 u CF         SBN       365672013 1/21/2015     I-131       2.16E-03    3.75E-03     l.29E-02 u CF         DOW       365672014 1/21/2015     I-131       l.92E-03    4.IOE-03     l.39E-02 u CF         COL       365672015 1/21/2015     1-131       3.64E-03    4.24E-03     1.52E-02 u CF         ONS-1     365672016 1/21/2015     1-131      -l.61E-03    3.63E-03     l.IOE-02 u CF         ONS-2     365672017 1/21/2015     1-131      -3.95E-03    3.44E-03     9.0lE-03 u CF         ONS-3     365672018 1/21/2015     I-131       3.74E-03    3.82E-03     1.23E-02 u CF         ONS-4     365672019 1/21/2015     1-131       4.56E-04    3.71E-03     1.09E-02 u CF         ONS-5     365672020 1/2112015     1-131       1.61E-02    4.53E-03     9.73E-03 UI CF         ONS-6     365672021 1/21/2015     I-131       4.34E-03    2.71E-03     9.99E-03 u CF        NBF        366148012 1/28/2015     I-131      -6.26E-03    7.56E-03     2'.16E-02 u CF         SBN       366148013 1/28/2015     I-131       2.09E-03    5.14E-03     l.82E-02 u CF         DOW       366148014 1/28/2015     I-131       3.27E-03    8.03E-03     2.73E-02 u CF         COL       366148015 1/28/2015     I-131       9.83E-04    5.33E-03     l.76E-02 u CF         ONS-1     366148016 1/28/2015     1-131      -7.28E-03    6.95E-03     1.88E-02 u CF         ONS-2     366148017 1/28/2015     1-131       1.42E-04    5.35E-03     1.74E-02 u CF         ONS-3     366148018 1/28/2015     1-131      -6.90E-03    5.52E-03     l.47E-02 u CF         ONS-4     366148019 1/28/2015     1-131       l.09E-03    4.lOE-03     l.39E-02 u CF         ONS-5     366148020 1/28/2015     1-131      -3.58E-03    6.37E-03     l.91E-02 u CF         ONS-6     366148021 1/28/2015     1-131      -9.94E-03    7.05E-03     l.63E-02 u CF        NBF        366679012 2/4/2015      I-131       1.24E-04    6.87E-03     2.24E-02 u CF        SBN        366679013 2/4/2015      1-131      -l.34E-03    6.55E-03     2.04E-02 u CF        DOW        366679014 2/4/2015      I-131       2.63E-03    4.42E-03     1.57E-02 u CF         COL       366679015 2/4/2015      I-131       l.24E-04    6.37E-03     2.07E-02 u CF         ONS-1     366679016 2/4/2015      1-131       2.58E-03    5.80E-03*    2.04E-02 u CF         ONS-2     366679017 2/4/2015      I-131      -2.43E-03    5.40E-03     1.61E-02 u CF         ONS-3     366679018 2/4/2015      1-131      -l.59E-03    6.91E-03     2.22E-02 u CF         ONS-4     366679019 2/4/2015      1-131       3.02E-03    7.87E-03     2.64E-02 u CF         ONS-5     366679020 2/4/2015      1-131       9.15E-03    6.41E-03     2.40E-02 u CF         ONS-6     366679021 2/4/2015      1-131       4.15E-03    4.36E-03     l.61E-02 u D-34

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)     (pCi/m3)   (pCi/m3)
CF         NBF       367176012 2/1112015     1-131      -3.65E-03     5.57E-03    l.60E-02 u CF         SBN       367176013 2/11/2015     1-131       1.88E-03     5.05E-03    l.71E-02 u CF         DOW       367176014 2/1112015     1-131      -5.49E-03     5.16E-03    l.42E-02 u CF         COL       367176015 2/1112015     1-131       4.95E-03     6.44E-03    2.32E-02 u CF         ONS-1     367176016 2/1112015     1-131      -4.04E-03    *5.34E-03    l.45E-02 u CF         ONS-2     367176017 2/1112015     1-131      -2.21E-03     7.59E-03    2.31E-02 u CF         ONS-3     367176018 2/1112015     1-131       l.93E-03     5.6IE-03    1.94E-02 u CF         ONS-4     367176019 211112015     1-131      -1.94E-03     6.32E-03    l.98E-02 u CF         ONS-5     367176020 2/11/2015     1-131      -4.47E-03     5.0IE-03    1.47E-02 u CF         ONS-6     367176021 2/1112015     I-131       7.25E-03     5.50E-03    2.03E-02 u CF         NBF       367474012 2118/2015     1-131       6.04E-03     4.45E-03    l.70E-02 u CF         SBN       367474013 2/18/2015     1-131       8.44E-03     6.00E-03    2.26E-02 u CF         DOW       367474014 2/18/2015     1-131      -4.63E-03     6.48E-03    l.81E-02 u CF         COL       367474015 2/18/2015     1-131      -6.56E-03     5.06E-03    1.20E-02 u CF         ONS-1     367474016 2118/2015     I-131       l.89E-04     8.38E-03    2.82E-02 u CF         ONS-2     367474017 2118/2015     I-131       3.56E-03     6.54E-03    2.25E-02 u CF         ONS-3     367474018 2118/2015     I-131      -1.03E-02     7.79E-03    l.62E-02 u CF         ONS-4     367474019 2118/2015     I-131      -5.65E-05     4.96E-03    l.63E-02 u CF         ONS-5     367474020 2/18/2015     I-131      -1.14E-02     6.24E-03    l.30E-02 u CF         ONS-6     367474021 2/18/2015     I-131      -4.57E-03     5.16E-03    1.41E-02 u CF         NBF       367835012 2/2512015     I-131      -9.89E-03     5.58E-03    l.08E-02 u CF         SBN       367835013 2/25/2015     I-131       1.93E-03     5.14E-03    1.81E-02 u CF         DOW       367835014 2/25/2015     I-131      -1.58E-03      5.22E~03   1.63E-02 u CF         COL       367835015 2/25/2015     I-131       6.37E-03     5.0IE-03    1.96E-02 u CF         ONS-1     367835016 2/2512015     I-131      -4.61E-03     5.82E-03    1.67E-02 u CF         ONS-2     367835017 2/25/2015     1-131      -5.82E-04     4.00E-03    1.29E-02 u CF         ONS-3     367835018 2/2512015     I-131      -2.43E-04     5.18E-03    1.69E-02 u CF         ONS-4     367835019 2/25/2015     1-131       6.80E-04     3.49E-03    l.18E-02 u CF         ONS-5     367835020 2/25/2015     I-131       7.98E-03     5.43E-03    1.96E-02 u CF         ONS-6     367835021 2/25/2015     I-131      -1.00E-02     5.93E-03    l.36E-02 u CF         NBF       368255012 2/28/2015     I-131       1.59E-03     6.66E-03    2.26E-02 u CF         SBN       368255013 2/2812015     I-131      -1.79E-03     5.0IE-03    1.59E-02 u CF         DOW       368255014 2/28/2015     I-131       l.02E-02     4.20E-03    l.76E-02 u CF         COL       368255015 2/28/2015     I-131      -l.33E-02     8.69E-03    2.09E-02 u CF         ONS-1     368255016  3/112015     I-131      -2.64E-03     5.88E-03    1.74E-02 u CF         ONS-2     368255017  3/112015     1-131      -8.26E-03     7.84E-03    l.81E-02 u CF         ONS-3     368255018  3/1/2015     I-131       l.02E-02     7.82E-03    2.90E-02 u CF         ONS-4     368255019  3/1/2015     1-131       8.54E-03     6.59E-03    2.46E-02 u CF         ONS-5     368255020  311/2015     I-131      -3.32E-04     4.15E-03    1.32E-02 u CF         ONS-6     368255021  3/112015     I-131      -2.98E-03     4.24E-03    1.22E-02 u CF         NBF       368784012  3/712015     1-131       3.50E-03     7.44E-03    2.56E-02 u CF         SBN       368784013  31712015     I-131      -4.87E-03     6.lOE-03    1.68E-02 u CF         DOW       368784014  3/712015     1-131       1.89E-04     4.32E-03    1.45E-02 u CF         COL       368784015  3/712015     I-131       l.78E-03     5.56E-03    l.92E-02 u CF         ONS-1     368784016  3/8/2015     I-131      -7.68E-03     5.34E-03    1.21E-02 u CF         ONS-2     368784017  3/8/2015     1-131      -6.81E-03     5.77E-03    1.43E-02 u CF         ONS-3     368784018  3/8/2015     1-131       3.50E-03     6.56E-03    2.29E-02 u CF         ONS-4     368784019  3/8/2015     I-131       4.04E-03     6.22E-03    2.26E-02 u CF         ONS-5     368784020  3/8/2015     I-131      -1.17E-02     6.07E-03    l.05E-02 u CF         ONS-6     368784021  3/8/2015     1-131      -1.55E-03     6.94E-03    2.22E-02 u D-35

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       369215012  3/14/2015     I-131      -l.45E-03
* 4.23E-03     l.28E-02 u CF         SBN       369215013  3/14/2015     I-131      -6.33E-03    4.53E-03     l.05E-02 u CF         DOW       369215014  3/14/2015     I-131       l.16E-04    5.53E-03     l.83E-02 u CF         COL       369215015  3/14/2015     I-131       5.46E-05    2.95E-03     l.OOE-02 u CF         ONS-1     369215016  3/14/2015     I-131      -3.96E-03    6.93E-03     2.00E-02 u CF         ONS-2     369215017  3/14/2015     I-131      -1.62E-03    4.71E-03     l.47E-02 u CF         ONS-3     369215018  3/15/2015     I-131       9.60E-03    6.61E-03     2.40E-02 u CF         ONS-4     369215019  3/15/2015     I-131       2.74E-04    4.94E-03     l.61E-02 u CF         ONS-5     369215020  3/15/2015     I-131      -5.20E-03    4.57E-03     l.17E-02 u CF         ONS-6     369215021  3/15/2015     I-131      -5.94E-03    6.59E-03     l.88E-02 u CF         NBF       369628012  3/21/2015     I-131       l.78E-03    4.24E-03     l.51E-02 u CF         SBN       369628013  3/21/2015     I-131      -5.37E-04    6.41E-03     2.14E-02 u CF         DOW       369628014  3/21/2015     I-131       l.42E-04    4.97E-03     l.66E-02 u CF         COL       369628015  3/21/2015     I-131      -5.31E-04    6.09E-03     l.94E-02 u CF         ONS-1     369628016  3/21/2015     I-131      -l.60E-03    5.59E-03     l.70E-02 u CF         ONS-2     369628017  3/21/2015     I-131      -4.72E-03    4.81E-03     l.26E-02 u CF         ONS-3     369628018  3/22/2015     I-131       2.96E-03    4.04E-03     l.48E-02 u CF         ONS-4     369628019  3/22/2015     I-131       3.68E-03     5.48E-03    l.90E-02 u CF         ONS-5     369628020  3/22/2015     I-131       9.36E-03    4.95E-03     l.86E-02 u CF         ONS-6     369628021  3/22/2015     I-131       l.13E-02    7.73E-03     2.85E-02 u CF         NBF       370078012  3/28/2015     I-131      -2.44E-04    4.89E-03     l.64E-02 u CF         SBN       370078013  3/28/2015     I-131       l.84E-03     6.19E-03    2.12E-02 u CF         DOW       370078014  3/28/2015     I-131      -l.21E-03     6.41E-03    2.05E-02 u CF         COL       370078015  3/28/2015     I-131      -l.51E-03     6.16E-03    l.94E-02 u CF         ONS-1     370078016  3/28/2015     I-131      -5.64E-03     l.20E-02    3.63E-02 u CF         ONS-2     370078017  3/28/2015     I-131      -2.38E-03     5.30E-03    l.53E-02 u CF         ONS-3     370078018  3/29/2015     I-131       l.OOE-02     6.52E-03    2.44E-02 u CF         ONS-4     370078019  3/29/2015     I-131       5.18E-03     7.73E-03    2.70E-02 u CF         ONS-5     370078020  3/29/2015     I-131      -l.67E-02     8.65E-03    l.83E-02 u CF         ONS-6     370078021  3/29/2015     I-131       l.42E-03     5.llE-03    l.79E-02 u CF         NBF       370818012 . 4/4/2015     I-131       7.62E-04    4.70E-03     l.56E-02 u CF         SBN       370818013   4/4/2015     I-131       6.90E-03     5.81E-03    2.15E-02 u CF         DOW       370818014   4/4/2015     I-131      -8.12E-03     7.81E-03    l.98E-02 u CF         COL       370818015   4/4/2015     I-111       l.82E-03     6.60E-03    2.24E-02 u CF         ONS-1     370818016   4/5/2015     I-131      -6.19E-03    4.58E-03     l.OOE-02 u CF         ONS-2     370818017   4/5/2015     I-131      -6.79E-03     6.23E~03    l.63E-02 u CF         ONS-3     370818018   4/5/2015     I-131      -3.33E-03     6.95E-03    l.80E-02 u CF         ONS-4     370818019   4/5/2015     I-131       3.18E-03     5.58E-03    l.97E-02 u CF         ONS-5     370818020   4/5/2015     I-131      -l.66E-03     4.29E-03    l.36E-02 u CF         ONS-6     370818021   4/5/2015     I-131       2.65E-03     6.0lE-03    2.lOE-02 u CF         NBF       371275012  4/15/2015     I-131      -3.33E-03     4.71E-03    l.33E-02 u CF         SBN       371275013  4/15/2015     I-131      -l.80E-03     4.92E-03    l.50E-02 u CF         DOW       371275014  4/15/2015     I-131      -3.93E-03     6.07E-03    l.81E-02 u CF         COL       371275015  4/15/2015     I-131      -6.13E-03     6.35E-03    l.76E-02 u CF         ONS-1     371275016  4/15/2015     I-131       l.OlE-03     5.19E-03    l.77E-02 u CF         ONS-2     371275017  4/15/2015     I-131      -6.77E-03     5.17E-03    l.18E-02 u CF         ONS-3     371275018  4/15/2015     I-131       l.06E-03     7.03E-03    2.39E-02 u CF         ONS-4     371275019  4/15/2015     I-131      -5.17E-03     5.67E-03    l.38E-02 u CF         ONS-5     371275020  4/15/2015     I-131       2.37E-03     4.98E-03    l.76E-02 u CF         ONS-6     371275021  4/15/2015     I-131      -3.78E-03     5.19E-03    l.44E-02 u D-36

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE         (pCi/m3)   (pCi/m3)    (pCi/m3)
CF         NBF       371765012 4/22/2015     I-131       l.72E-03    6.56E-03     2.23E-02 u CF         SBN       371765013 4/22/2015     I-131      -8.61E-03    5.69E-03     l.03E-02 u CF         DOW       371765014 4/22/2015     I-131       6.35E-03    6.14E-03     2.3IE-02 u CF         COL       371765015 4/22/2015     I-131      -3.2IE-03    6.90E-03     2.05E-02 u CF         ONS-1     371765016 4/22/2015     I-131       2.54E-03    5.87E-03     2.05E-02 u CF         ONS-2     371765017 4/22/2015     I-131      -4.68E-04    6.84E-03     l.9IE-02 u CF         ONS-3     371765018 4/22/2015     I-131       3.99E-03    3.98E-03     l.46E-02 u CF         ONS-4     371765019 4/22/2015     I-131      -3.3IE-03    5.60E-03     l.73E-02 u CF         ONS-5     371765020 4/22/2015     I-131      -l.56E-03    7.68E-03     2.46E-02 u CF         ONS-6     371765021 4/22/2015     I-131       7.0IE-03    5.78E-03     2.21E-02 u CF         NBF       372180012 4/29/2015     I-131       3.82E-03    4.53E-03     l.62E-02 u CF         SBN       372180013 4/29/2015     1-131      -l.99E-03    3.36E-03     9.94E-03 u CF         DOW       372180014 4/29/2015     1-131      -6.92E-03    4.05E-03     9.29E-03 u CF         COL       372180015 4/29/2015     1-131      -5.64E-03    4.61E-03     l.31E-02 u CF         ONS-1     372180016 4/29/2015     I-131      -2.99E-03    4.86E-03     l.49E-02 u CF         ONS-2     372180017 4/29/2015     I-131       2.06E-03    4.85E-03     1.49E-02 u CF         ONS-3     372180018 4/29/2015     I-131       2.74E-03    3.42E-03     l.17E-02 u CF         ONS-4     372180019 4/29/2015     I-131      -3.77E-03    3.69E-03     l.OIE-02 u CF         ONS-5     372180020 4/29/2015     I-131       3.42E-03    6.31E-03     2.18E-02 u CF         ONS-6     372180021 4/29/2015     1-131      -4.26E-03    2.92E-03     6.32E-03 u CF        NBF        372743012  5/6/2015     1-131      -2.36E-03    4.86E-03     l.45E-02 u CF         SBN       372743013  5/6/2015     I-131       2.00E-03    7.69E-03     2.60E-02 u CF         DOW       372743014  5/6/2015     I-131       6.18E-04    3.62E-03     l.27E-02 u CF         COL       372743015  5/6/2015     I-131       4.74E-03    3.79E-03     l.62E-02 u CF         ONS-1     372743016  5/6/2015     I-131       6.21E-03    4.86E-03     l.92E-02 u CF         ONS-2     372743017  5/6/2015     I-131      -1.35E-03    6.59E-03     2.05E-02 u CF         ONS-3     372743018  5/6/2015     1-131       6.60E-04    4.42E-03     l.52E-02 u CF         ONS-4     372743019  5/6/2015     I-131      -l.18E-02    7.33E-03     l.61E-02 u CF         ONS-5     372743020  5/6/2015     I-131       7.29E-04    5.24E-03     l.76E-02 u CF         ONS-6     372743021  5/6/2015     I-131       2.32E-03    5.06E-03     l.73E-02 u CF        NBF        373202012 5113/2015     I-131      -7.99E-03    5.85E-03     l.40E-02 u CF         SBN       373202013 5/13/2015     1-131       2.36E-03    4.35E-03     l.62E-02 u CF         DOW       373202014 5/13/2015     I-131      -6.33E-04    2.50E-03     7.66E-03 u CF         COL       373202015 5113/2015     1-131       9.24E-03    5.66E-03     2.07E-02 u CF         ONS-1     373202016 5113/2015     1-131       7.49E-03    6.23E-03     2.31E-02 u CF         ONS-2     373202017 5/13/2015     I-131      -2.40E-03    3.34E-03     9.32E-03 u CF         ONS-3     373202018 5/13/2015     I-131      -2.79E-03    4.20E-03     l.19E-02 u CF         ONS-4     373202019 5113/2015     I-131       3.04E-03    3.15E-03     1.23E-02 u CF         ONS-5     373202020 5113/2015     1-131       l.95E-03    4.22E-03     l.52E-02 u CF         ONS-6     373202021 5113/2015     I-131       l.19E-03    3.23E-03     l.15E-02 u CF        NBF        373655012 5/20/2015     I-131      -3.89E-03    4.48E-03     l.13E-02 u CF         SBN       373655013 5/20/2015     I-131       5.04E-03    3.75E-03     l.66E-02 u CF         DOW       373655014 5/20/2015     I-131      -l.35E-03    6.SOE-03     2.21E-02 u CF         COL       373655015 5/20/2015     I-131      -6.05E-05    5.72E-03     l.88E-02 u CF         ONS-1     373655016 5/20/2015     1-131       2.74E-03    4.98E-03     l.78E-02 u CF         ONS-2     373655017 5/20/2015     I-131       8.13E-03    5.43E-03     2.06E-02 u CF         ONS-3     373655018 5/20/2015     I-131      -4.79E-03    5.72E-03     l.60E-02 u CF         ONS-4     373655019 5/20/2015     I-131      -l.03E-02    7.77E-03     l.90E-02 u CF         ONS-5     373655020 5/20/2015     I-131       4.39E-03    5.92E-03     2.12E-02 u CF         ONS-6     373655021 5/20/2015     I-131      -3.38E-04    4.23E-03     l.35E-02 u D-37

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC          FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF'        NBF       374058012 5/27/2015     I-131      -l.lOE-03    5.41E-03     1.77E-02   u CF         SBN       374058013 5/27/2015     I-131      -3.85E-03    5.20E-03     l.42E-02   u CF         DOW       374058014 5/27/2015     I-131       l.lOE-03    4.70E-03     l.57E-02   u CF         COL       374058015 5/27/2015     I-131       3.17E-03    4.90E-03     l.70E-02   u CF         ONS-1     374058016 5/27/2015     I-131      -5.62E-03    4.42E-03     1.08E-02   u CF         ONS-2     374058017 5/27/2015     I-131       l.17E-03    5.29E-03     1.79E-02   u CF         ONS-3     374058018 5/27/2015     I-131      -6.90E-03    6.77E-03     1.85E-02   u CF         ONS-4     374058019 5/27/2015     I-131       4.76E-03    6.31E-03     2.28E-02   u CF         ONS-5     374058020 5/27/2015     I-131      -5.35E-03    6.03E-03     1.67E-02   u CF         ONS-6     374058021 5/27/2015     I-131       1.65E-02    6.53E-03     1.02E-02   UI CF         NBF       374491012  6/3/2015     I-131      -1.02E-02    5.89E-03     l.25E-02 *U CF         SBN       374491013  6/3/2015     I-131       3.88E-03    3.36E-03     l.34E-02   U CF         DOW       374491014  6/3/2015     I-131       2.82E-04    6.07E-03     2.05E-02   U CF         COL       374491015  6/3/2015     I-131      -5.59E-03    5.07E-03     1.22E-02   U CF         ONS-1     374491016  6/3/2015     I-131       6.30E-03    4.56E-03     1.71E-02   u CF       ' ONS-2     374491017  6/3/2015     I-131      -8.00E-03    4.54E-03     6.83E-03   u CF         ONS-3     374491018  6/3/2015     I-131      -3.40E-03    4.94E-03     l.45E-02   U CF         ONS-4     374491019  6/3/2015     I-131       4.49E-03    4.69E-03     l.74E-02   U CF         ONS-5     374491020  6/3/2015     I-131       2.05E-03    5.50E-03     l.96E-02   U CF         ONS-6     374491021  6/3/2015     I-131       8.52E-03    6.77E-03     2.49E-02   U CF         NBF       374979012 6/10/2015     I-131      -1.74E-03    5.35E-03     1.66E-02   U CF         SBN       374979013 6/10/2015     I-131      -1.51E-02    8.69E-03     1.59E-02   U CF         DOW       374979014 6/10/2015     I-131      -4.13E-04    4.79E-03     1.52E-02   U CF         COL       374979015 6/10/2015     I-131       5.68E-03    5.02E-03     l.93E-02  .U .
CF         ONS-1     374979016 6/10/2015     I-131       4.06E-03    6.45E-03     2.30E-02   U CF         ONS-2     374979017 6/10/2015     I-131       9.21E-03    8.58E-03     3.09E-02   U CF         ONS-3     374979018 6/10/2015     I-131       1.83E-03    4.13E-03     1.48E-02   U CF         ONS-4     374979019 6/10/2015     I-131       l.28E-02    6.92E-03     2.58E-02   U CF         ONS-5     374979020 6/10/2015     I-131      -3.35E-03    5.50E-03     1.60E-02   U CF         ONS-6     374979021 6/10/2015     I-131       5.09E-03    7.90E-03     2.75E-02   U CF         NBF       375504012 6/17/2015     I-131       6.53E-03    7.47E-03     2.74E-02   U CF         SBN       375504013 6117/2015     I-131      -3.62E-03    5.32E-03     1.51E-02   u CF         DOW       375504014 6/17/2015     I-131       1.04E-03    5.77E-03     l.97E-02   U CF         COL       375504015 6/17/2015     I-131       l.12E-02    6.30E-03     2.51E-02   u CF         ONS-1     375504016 6/17/2015     I-131      -1.05E-03    8.42E-03     2.76E-02   U CF         ONS-2     375504017 6/17/2015     I-131       8.08E-04    5.68E-03     l.96E-02   U CF         ONS-3     375504018 6/17/2015     I-131      -3.55E-03    6.60E-03     l.86E-02   U CF         ONS-4     375504019 6/17/2015     I-131       4.81E-03    4.98E-03     1.89E-02   U CF         ONS-5     375504020 6/17/2015     I-131       6.0IE-03    6.51E-03     2.34E-02   U CF         ONS-6     375504021 6/17/2015     I-131       6.91E-03    6.25E-03     2.39E-02   U CF         NBF       375803012 6/24/2015     I-131      -2.38E-03    4.88E-03     1.58E-02   U CF         SBN       375803013 6/24/2015     I-131       4.47E-04    3.53E-03     l.04E-02   U CF         DOW      *375803014 6/24/2015     I-131       4.93E-03    3.66E-03     l.23E-02   U CF         COL       375803015 6/24/2015     I-131       2.00E-03    3.87E-03     l.32E-02   U CF         ONS-1     375803016 6/24/2015     I-131      -2.76E-03    3.86E-03     l.04E-02   U CF         ONS-2     375803017 6/24/2015     I-131      -l.36E-03    3.87E-03     l.23E-02   U CF         ONS-3     375803018 6/24/2015     I-131       4.09E-04    5.09E-03     1.45E-02   U CF         ONS-4     375803019 6/24/2015     I-131      -3.13E-03    3.79E-03     1:17E-02   U CF         ONS-5     375803020 6/24/2015     I-131      -3.59E-03    3.69E-03     l.08E-02   U CF         ONS-6     375803021 6/24/2015     I-131      -3.09E-03    3.98E-03     l.22E-02   U D-38

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN       DATE      NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       376160012   7/1/2015     I-131       3.14E-03    3.56E-03     l.40E-02 u CF         SBN       376160013   7/1/2015     I-131       l.68E-03    4.04E-03     l.4IE-02 u CF         DOW       376160014   7/1/2015     I-131      -6.09E-03    4.56E-03     l.IIE-02 u CF         COL       376160015   7/1/2015     I-131       2.74E-03    2.90E-03     l.14E-02 u CF         ONS-1     376160016   7/1/2015     I-131       6.64E-03    3.41E-03     l.14E-02 u CF         ONS-2     376160017 . 7/1/2015     I-131      -2.57E-03    4.70E-03     l.44E-02 u CF         ONS-3     376160018   7/1/2015     I-131      -6.03E-05    435E-03      l.43E-02 u CF         ONS-4     376160019   7/1/2015     I-131      -6.55E-03    4.36E-03     l.04E-02 u CF         ONS-5     376160020   7/1/2015     I-131      -2.38E-03    4.93E-03     l.50E-02 u CF         ONS-6     376160021   7/1/2015     I-131       5.06E-03    3.96E-03     l.50E-02 u CF         NBF       376892012   7/8/2015     I-131       l.52E-03    4.14E-03     l.48E-02 u CF         SBN       376892013   7/8/2015     I-131      -5.96E-03     5.17E-03    l.19E-02 u CF        DOW        376892014   7/8/2015     I-131       8.88E-03    5.49E-03     2.lOE-02 u CF         COL       376892015   7/8/2015     I-131      -7.5IE-04    6.27E-03     2.02E-02 u CF         ONS-1     376892016   7/8/2015     I-131      -2.52E-03    5.87E-03     l.80E-02 u CF         ONS-2     376892017   7/8/2015     I-131       l.25E-02    6.39E-03     2.31E-02 u CF         ONS-3     376892018   7/8/2015     I-131       5.91E-03    6.62E-03     2.41E-02 u CF         ONS-4     376892019   7/8/2015     I-131       l.40E-03    5.5IE-03     l.85E-02 u CF         ONS-5     376892020   7/8/2015     I-131       3.72E-03    5.50E-03     l.97E-02 u CF         ONS-6     376892021   7/8/2015     I-131       3.30E-03    4.34E-03     l.59E-02 u CF         NBF       377426012  7/15/2015     I-131       2.09E-02    6.68E-03     1.75E-02 UI CF         SBN       377426013  7/15/2015     I-131       4.79E-03    5.22E-03     1.89E-02 u CF         DOW       377426014  7/15/2015     I-131      -3.64E-05    6.14E-03     l.99E-02 u CF         COL       377426015  7/15/2015     I-131       2.71E-03    4.61E-03     l.66E-02 u CF         ONS-1     377426016  7/15/2015     I-131       5.12E-03    5.22E-03     l.92E-02 u CF         ONS-2     377426017  7115/2015     I-131      -1.48E-02     1.09E-02    2.54E-02 u CF         ONS-3     377426018  7/15/2015     1-131      -4.35E-03    4.70E-03     l.23E-02 u CF         ONS-4     377426019  7/15/2015     I-131      -7.40E-03    5.49E-03     l.21E-02 u CF         ONS-5     377426020  7/16/2015     1-131      -3.05E-03    7.79E-03     2.40E-02 u CF         ONS-6     377426021  7/15/2015     I-131       5.13E-03    5.05E-03     l.91E-02 u CF         NBF       377895012  7/22/2015     1-131       1.54E-04    6.04E-03     1.71E-02 u CF         SBN       377895013  7/22/2015     I-131       l.18E-03    4.12E-03     1.40E-02 u CF         DOW       377895014  7/22/2015     1-131       4.19E-03     5.87E-03    2.IOE-02 u CF         COL       377895015  7/22/2015     1-131      -5.53E-03    4.45E-03     l.03E-02 u CF         ONS-1     377895016  7/22/2015     I-131       l.41E-03     5.78E-03    l.99E-02 u CF         ONS-2     377895017  7/22/2015     I-131       1.27E-03    3.66E-03     l.28E-02 u CF         ONS-3     377895018  7/22/2015     I-131       3.82E-04    4.00E-03     l.33E-02 u CF         ONS-4     377895019  7/22/2015     1-131       l.93E-04    3.91E-03     l.32E-02 u CF         ONS-5     377895020  7/22/2015     I-131      -l.48E-03    4.14E-03     l.28E-02 u CF         ONS-6     377895021  7/22/2015     I-131      -1.07E-02    6.86E-03     l.17E-02 u CF        NBF        378372012  7/29/2015     I-131      -2.53E-03    4.23E-03     l.25E-02 u CF         SBN       378372013  7/29/2015     I-131      -l.24E-02    6.53E-03     1.28E-02 u CF         DOW       378372014  7/29/2015     I-131       l.25E-02     6.43E-03    2.39E-02 u CF         COL       378372015  7/29/2015     I-131      -6.59E-03     3.92E-03    6.87E-03 u CF         ONS-1     378372016  7/29/2015     1-131       8.09E-06     6.36E-03    2.09E-02 u CF         ONS-2     378372017  7/29/2015     I-131       8.09E-03     6.08E-03    2.25E-02 u CF         ONS-3     378372018  7/29/2015     I-131       7.57E-03    4.94E-03     l.84E-02 u CF         ONS-4     378372019  7/29/2015     I-131      -7.87E-03    5.05E-03     1.03E-02 u CF         ONS-5     378372020  7/29/2015     I-131       3.58E-03    5.96E-03     2.07E-02 u CF         ONS-6     378372021  7/29/2015     I-131      -4.03E-03    3.43E-03     7.50E-03 u D-39

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC        FLAGS TYPE     STATION       LSN      DATE      NUCLIDE        (pCi/m3) *  (pCi/m3)    (pCi/m3)
CF         NBF       378883012  8/5/2015     1-131       2.59E-05    5.43E-03     l.82E-02  u CF         SBN       378883013  8/5/2015     1-131       5.56E-03    6.0IE-03     2.19E-02  u CF         DOW       378883014  8/5/2015     I-131       8.81E-03    5.41E-03     l.89E-02  u CF         COL       378883015  8/5/2015     1-131      -2.00E-03    6.43E-03     2.0IE-02  u CF         ONS-1     378883016  8/5/2015     1-131       l.17E-02    5.99E-03     2.32E-02  u CF         ONS-2     378883017  8/5/2015     1-131      -7.5IE-03    6.26E-03     l.38E-02  u CF         ONS-3     378883018  8/5/2015     1-131       2.92E-03    5.07E-03     1.84E-02  u CF         ONS-4     378883019  8/5/2015     1-131       7.75E-03    4.62E-03     l.98E-02  u CF         ONS-5     378883020  8/5/2015     1-131       6.12E-03    7.33E-03     2.09E-02  u CF         ONS-6     378883021  8/5/2015     1-131      -l.02E-02    6.36E-03     1.24E-02  u CF         NBF       379369012 8/12/2015     1-131       l.37E-03    3.14E-03     l.13E-02  u CF         SBN       379369013 8/12/2015     1-131       l.97E-03    4.75E-03     l.65E-02  u CF         DOW       379369014 8/12/2015     I-131      -l.27E-03    3.45E-03     l.09E-02  u CF         COL       379369015 8/12/2015     1-131      -3.33E-03    3~93E-03     l.08E-02  u CF         ONS-1     379369016 8/12/2015     1-131      -2.99E-04    5.63E-03     l.82E-02  u CF         ONS-2     379369017 8/12/2015     1-131       l.12E-03    5.25E-03     l.75E-02  u CF         ONS-3     379369018 8/12/2015     1-131      -5.34E-03    6.76E-03     2.04E-02  u CF         ONS-4     379369019 8/12/2015     1-131      -7.98E-03    5.12E-03     l.04E-02  u CF         ONS-5     379369020 8/12/2015     1-131       3.3IE-03    5. l 7E-03   l.85E-02  u CF        ONS-6      379369021 8/12/2015     1-131       4.IOE-04    3.88E-03     l.32E-02  u CF        NBF        379768012 8/19/2015     1-131       2.29E-03    6.20E-03     2.17E-02  u CF         SBN       379768013 8/19/2015     1-131       2.38E-03    4.76E-03     l.73E-02  u CF         DOW      *379768014 8/19/2015     1-131      -2.IOE-03    5.31E-03     l.57E-02  u CF        COL        379768015 8/19/2015     1-131       2.91E-03    5.35E-03     l.90E-02  u CF         ONS-1     379768016 8/19/2015     1-131      -2.86E-03    4.06E-03     1.14E-02  u CF         ONS-2     379768017 8/19/2015     1-131       2.02E-03    8.80E-03     2.97E-02  u CF         ONS-3     379768018 8/19/2015     1-131      -l.50E-04    4.96E-03     1.65E-02  u CF        ONS-4      379768019 8/19/2015     1-131      -9.49E-03    7.32E-03     l.91E-02  u CF        ONS-5      379768020 8/19/2015     1-131      -7.73E-03    5.40E-03     l.li>E-02 u CF         ONS-6     379768021 8/19/2015     1-131      -2.88E-04    4.71E-03     1.50E-02  u CF        NBF        380195012 8/26/2015     1-131      -4.18E-03    5.16E-03     l.43E-02  u
 *CF         SBN       380195013 8/26/2015     1-131       3.03E-03    5.32E-03     l.88E-02  u CF         DOW       380195014 8/26/2015     1-131      -l.40E-03    4.65E-03     l.49E-02  u CF         COL       380195015 8/26/2015     1-131       3.76E-03    6.13E-03     2.18E-02  u CF         ONS-1     380195016 8/26/2015     1-131       l.OIE-03    6.71E-03     2.20E-02  u CF        ONS-2      380195017 8/26/2015     1-131       2.19E-03    8.73E-03     2.96E-02  u CF        ONS-3      380195018 8/26/2015     1-131      -l.03E-03    4.55E-03     l.41E-02  u CF         ONS-4     380195019 8/26/2015     1-131       l.53E-03    6.85E-03     2.36E-02  u CF         ONS-5     380195020 8/26/2015     1-131      -9.87E-03    6.65E-03     l.57E-02  u CF        ONS-6      380195021 8/26/2015     1-131       3.23E-03    7.41E-03     2.52E-02  u CF        NBF        380656012  9/2/2015     1-131      -8.19E-04    5.83E-03     l.89E-02  u CF         SBN       380656013  9/2/2015     1-131       8.12E-04    5.45E-03     l.63E-02  u CF        DOW        380656014  9/2/2015     1-131      -3.14E-04    5.12E-03     l.64E-02  u CF        COL        380656015 9/2/2015      1-131       l.28E-02    7.70E-03     l.95E-02  u CF        ONS-1      380656016  9/2/2015     1-131       8.16E-03    6.77E-03     2.44E-02  u CF         ONS-2     380656017  9/2/2015     1-131      -4.08E-03    4.48E-03     l.07E-02  u CF        ONS-3      380656018 9/2/2015      1-131      -6.84E-03    5.99E-03     l.39E-02  u CF        ONS-4      380656019  9/2/2015     1-131       8.27E-03    8.28E-03     2.98E-02  u CF        ONS-5      380656020  9/2/2015     1-131      -7.15E-03    5.82E-03     l.41E-02  u CF         ONS-6     380656021  9/2/2015     I-131      -2.16E-03    5.60E-03     l.69E-02  u D-40

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION       LSN       DATE       NUCLIDE       (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       381042012   9/9/2015     1-131      -4.26E-03    7.91E-03     2.39E-02  u CF         SBN       381042013   9/9/2015     1-131      *l.29E-03    7.31E-03     2.27E-02  u CF         DOW       381042014   9/9/2015     1-131      -5.41E-03    6.04E-03     l.62E-02  u CF         COL       381042015   9/9/2015     1-131      -l.62E-03    5.75E-03     l.74E-02  u CF         ONS-1     381042016   9/9/2015     1-131       5.94E-03    6.63E-03     2.41E-02  u CF         ONS-2     381042017   9/9/2015     1-131      -5.65E-03    5.98E-03     l.60E-02  u CF         ONS-3     381042018   9/9/2015     1-131      -l.42E-03    4.14E-03     l.29E-02  u CF         ONS-4     381042019   9/9/2015     1-131      -8.71E-04    6.21E-03     2.06E-02  u CF         ONS-5     381042020   9/9/2015     1-131       5.15E-03    5.07E-03     l.89E-02  u CF         ONS-6     381042021   9/9/2015     1-131       5.41E-03    5.64E-03     2.05E-02  u CF         NBF       381428012  9/16/2015     1-131      -6.14E-03    3.43E-03     7.15E-03  u CF         SBN       381428013  9/16/2015     1-131       7.74E-03    3.91E-03     l.31E-02  u CF         DOW       381428014  9/16/2015     1-131       l.03E-03    2.76E-03     9.34E-03  u CF         COL       381428015  9/16/2015     1-131      -l.62E-03    3.62E-03     l. lSE-02 u CF         ONS-1     381428016  9/16/2015     1-131       9.72E-03    4.SSE-03     l.09E-02  u CF         ONS-2     381428017  9/16/2015     1-131      -l.94E-03    2.54E-03     7.83E-03  u CF         ONS-3     381428018  9/16/2015     1-131      -l.51E-03    2.94E-03     8.97E-03  u CF         ONS-4     381428019  9/16/2015     1-131      -l.96E-03    2.90E-03     8.89E-03  u CF         ONS-5     381428020  9/16/2015     1-131      -9.63E-04    2.43E-03     7.65E-03  u CF         ONS-6     381428021  9/16/2015     1-131       6.54E-03    4.76E-03     l.64E-02  u CF        NBF        381831012  9/23/2015     1-131      -2.68E-03    3.78E-03     l.l lE-02 u CF         SBN       381831013  9/23/2015     1-131      -2.63E-03    2.97E-03     8.SSE-03  u CF         DOW       381831014  9/23/2015     1-131      ~9.47E-04    3.05E-03     9.33E-03  u CF         COL       381831015  9/23/2015     1-131       4.27E-04    3.0SE-03     9.71E-03  u CF         ONS-1     381831016  9/23/2015     1-131       2.91E-03    3.79E-03     l.33E-02  u CF         ONS-2     381831017  9123/2015     1-131       9.llE-04    6.70E-03     l.95E-02  u CF         ONS-3     381831018  9123/2015     1-131       l.SlE-03    4.41E-03     l.50E-02  u CF         ONS-4     381831019  9/23/2015     1-131       8.55E-04    3.24E-03     l.llE-02  u CF         ONS-5     381831020  9/23/2015     1-131       2.89E-03    3.45E-03     l.24E-02  u CF         ONS-6     381831021  9/23/2015     1-131       3.39E-03    3.l lE-03    l.09E-02  u CF         NBF       382263012  9/30/20l5     1-131       2.67E-03    7.76E-03     2.70E-02  u CF         SBN       382263013  9/30/2015     1-131      -l.44E-02    9.65E-03     2.lOE-02  u CF        DOW        382263014  9/30/2015     1-131      -2.78E-03    4.78E-03     l.43E-02  u CF         COL       382263015  9/30/2015     1-131      -9.20E-03    8.24E-03     2.25E-02  u CF         ONS-1     38226:3016 9/30/2015     1-131       4.97E-03    5.29E-03     l.99E-02  u CF         ONS-2     382263017  9/30/2015     1-131      -2.66E-04    2.79E-03     8.92E-03  u CF         ONS-3     382263018  9/30/2015     1-131      -2.SOE-03    5.76E-03     l.SOE-02  u CF         ONS-4     382263019  9/30/2015     1-131      -l.70E-03    7.17E-03     2.27E-02  u CF         ONS-5     382263020  9/30/2015     1-131      -2.41E-03    7.96E-03     2.50E-02  u CF         ONS-6     382263021  9/30/2015 . 1-131      -9.67E-04    4.85E-03     l.58E-02  u CF        NBF        382890012  10/7/2015     1-131       5.15E-04    6.06E-03     2.06E-02  u CF         SBN       382890013  10/7/2015     1-131      -l.57E-03    7.48E-03     2.34E-02  u CF        DOW        382890014  10/7/2015     1-131       6.48E-03    6.29E-03     2.27E-02  u CF         COL       382890015  10/7/2015     1-131       l.60E-03    6.33E-03     2.15E-02  u CF         ONS-1     382890016  10/7/2015     1-131      -3.60E-03    4.60E-03     l.23E-02  u CF         ONS-2     382890017  10/7/2015     1-131       8.50E-03    5.87E-03     2.17E-02  u CF         ONS-3     382890018  10/7/2015     1-131       3.58E-03    4.74E-03     I. 74E-02 u CF         ONS-4     382890019  10/7/2015     1-131      -4.16E-04    4.99E-03     l.60E-02  u CF         ONS-5     382890020  10/7/2015     1-131      -4.14E-03    4.98E-03     l.27E-02  u CF         ONS-6     382890021  10/7/2015     1-131.     -l.57E-03    5.35E-03     l.68E-02  u D-41

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC      STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE     NUCLIDE        (pCi/m3)    (pCi/m3)    (pCi/m3)
CF         NBF       383491012 10/14/2015    I-131       5.88E-04    6.48E-03     2.12E-02 u CF         SBN       383491013 10/14/2015    I-131       2.39E-03     6.26E~03    2.19E-02 u CF         DOW       383491014 10/14/2015    I-131       3.40E-03    6.12E-03     2.15E-02 u CF         COL       383491015 10/14/2015    I-131      -6.76E-03    7.15E-03     1.91E-02 u CF         ONS-1     383491016 10/14/2015    I-131       5.31E-04. 5.92E-03     1.97E-02 u CF         ONS-2     383491017 10/14/2015    I-131      -5.65E-03    5.44E-03     l.35E-02 u CF         ONS-3     383491018 10/14/2015    I-131      -8.0IE-03    5.79E-03     1.45E-02 u CF         ONS-4     383491019 10/14/2015    I-131       2.79E-03    6.56E-03     2.23E-02 u CF         ONS-5     383491020 10/14/2015    I-131       7.86E-03    5.82E-03     2.17E-02 u CF         ONS-6     383491021 10/14/2015    I-131       3.43E-03    5.78E-03     2.04E-02 u CF         NBF       383944012 10/21/2015    I-131       2.39E-03    5.37E-03     1.88E-02 u CF         SBN       383944013 10/21/2015    I-131       1.17E-02    6.30E-03     2.29E-02 u CF         DOW       383944014 10/21/2015    I-131       l.41E-03    5.54E-03     l.90E-02 u CF         COL       383944015 10/21/2015    I-131      -5.77E-03    5.03E-03     l.27E-02 u CF         ONS-1     383944016 10/21/2015    I-131      -1.71E-03    3.34E-03     9.09E-03 u CF         ONS-2     383944017 10/21/2015    I-131       1.57E-03    6.21E-03     2.13E-02 u CF         ONS-3     383944018 10/21/2015    I-131      -1.06E-02    6.30E-03     1.28E-02 u CF         ONS-4     383944019 10/21/2015    I-131       5.04E-03    4.84E-03     l.89E-02 u CF         ONS-5     383944020 10/21/2015    I-131       2.00E-03    4.IOE-03     1.45E-02 u CF         ONS-6     383944021 10/21/2015    I-131      -2.49E-03    3.0IE-03     6.74E-03 u CF         NBF       384389012 10/28/2015    I-131       l.03E-03    5.17E-03     1.75E-02 u CF         SBN       384389013 10/28/2015    I-131      -2.88E-03    6.66E-03     1.99E-02 u CF         DOW       384389014 10/28/2015    I-131       1.06E-02    7.41E-03     2.78E-02 u CF         COL       384389015 10/28/2015    I-131       6.59E-03    5.76E-03     2.09E-02 u CF         ONS-1     384389016 10/28/2015    I-131      -4.23E-03    6.16E-03     1.82E-02 u CF         ONS-2     384389017 10/28/2015    I-131       3.73E-03    5.72E-03     2.07E-02 u CF         ONS-3     384389018 10/28/2015    I-131       4.58E-04    4.49E-03     1.48E-02 u CF         ONS-4     384389019 10/28/2015    I-131      -2.35E-03    5.35E-03     1.67E-02 u CF         ONS-5     384389020 10/28/2015    I-131      -1.16E-04     5.88E-03    1.94E-02 u CF         ONS-6     384389021 10/28/2015    I-131       1.84E-03    6.85E-03     2.40E-02 u CF        NBF        384929012  11/4/2015    I-131       9.15E-03    4.85E-03     1.77E-02 u CF         SBN       384929013  11/4/2015    I-131       3.73E-04    3.29E-03     l.13E-02 u CF         DOW       384929014  11/4/2015    I-131      -8.88E-03    5.31E-03     1.14E-02 u CF         COL       384929015  11/4/2015    I-131       4.03E-03    4.54E-03     1.65E-02 u CF         ONS-1     384929016  1114/2015    I-131      -4.66E-03    4.99E-03     l.34E-02 u CF         ONS-2     384929017  11/4/2015    I-131       3.93E-03    5.llE-03     l.84E-02 u CF         ONS-3     384929018  11/4/2015    I-131      -2.lOE-03    4.04E-03     l.22E-02 u CF         ONS-4     384929019  11/4/2015    I-131       2.68E-03    5.45E-03     l.87E-02 u CF         ONS-5     384929020  11/4/2015    I-131       1.82E-03    4.62E-03     l.63E-02 u CF         ONS-6     384929021  11/4/2015    I-131      -5.55E-03    4.54E-03     1.IOE-02 u CF         NBF       385529012 11/11/2015    I-131       l.92E-03     8.67E-03    2.91E-02 u CF         SBN       385529013 11/11/2015    I-131      -4.44E-03    4.lOE-03     1.00E-02 u CF         DOW       385529014 11/1112015    I-131       5.52E-04    6.78E-03     2.29E-02 u CF         COL       385529015 11/11/2015    I-131      -5.75E-04    4.31E-03     l.38E-02 u CF         ONS-1     385529016 11/11/2015    I-131      -5.48E-03    4.71E-03     1.07E-02 u CF         ONS-2     385529017 11/11/2015    I-131       l.72E-02     8.49E-03    3.26E-02 u CF         ONS-3     385529018 11/11/2015    I-131      -l.38E-03    4.40E-03     l.38E-02 u CF         ONS-4     385529019 11/11/2015    I-131       2.73E-03    6.47E-03     2.29E-02 u CF         ONS-5     385529020 11/11/2015    I-131      -5.77E-04    4.85E-03     1.57E-02 u CF         ONS-6     385529021 11/11/2015    I-131       1.61E-03     5.IOE-03    1.76E-02 u D-42

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC       STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE     NUCLIDE         (pCi/ni.3)  (pCi/m3)   (pCi/m3)
CF         NBF       386093012 11/18/2015    I-131      -5.47E-03      5.74E-03   1.53E-02  u CF         SBN       386093013 11/18/2015    I-131       5.15E-03      7.54E-03   2.60E-02  u CF         DOW       386093014 11/18/2015    I-131      -2.07E-03      4.74E-03    l.49E-02 u CF         COL       386093015 11/18/2015    I-131       4.68E-03      4.61E-03   1.75E-02  u CF         ONS-1     386093016 11/18/2015    I-131      -4.52E-03      4.75E-03   1.20E-02  u CF         ONS-2     386093017 11/18/2015    I-131       6.80E-03      4.71E-03   1.85E-02  u CF         ONS-3     386093018 11/18/2015    I-131       3.46E-04      3.83E-03    l.27E-02 u CF         ONS-4     386093019 11/18/2015    I-131       3.29E-03      4.85E-03   1.72E-02  u CF         ONS-5     386093020 11/18/2015    I-131      -2.88E-03      5.45E-03    l.65E-02 u CF         ONS-6     386093021 11/18/2015    I-131      -6.15E-04      3.83E-03    l.22E-02 u CF         NBF       386425012 11/25/2015    I-131      -1.06E-02      6.17E-03   1.0lE-02  u CF         SBN       386425013 11/25/2015    I-131       5.85E-03      6.46E-03   2.34E-02  u CF         DOW       386425014 1112512015    I-131      -l.25E-02      5.89E-03   7.24E-03  u CF         COL       386425015 11/25/2015    I-131        1.83E-02     1.05E-02   3.81E-02  u CF         ONS-1     386425016 11/25/2015    I-131       2.85E-03      6.66E-03   2.33E-02  u CF         ONS-2     386425017 1112512015    I-131        1.82E-03     7.18E-03   2.44E-02  u CF         ONS-3     386425018 11/25/2015    I-131      -2.03E-04      1.17E-02   3.86E-02  u CF         ONS-4     386425019 11/25/2015    I-131       9.62E-03      5.74E-03   2.46E-02  u CF         ONS-5     386425020 11/25/2015    I-131       4.00E-04. 5.65E-03    l.89E-02 u CF         ONS-6     386425021 11/25/2015    I-131       9.90E-03      l.30E-02   4.64E-02  u CF         NBF       386774012  12/2/2015    I-131       5.33E-03      5.32E-03    l.97E-02 u CF         SBN       386774013  12/2/2015    I-131        1.95E-03     4.52E-03    l.58E-02 u CF         DOW       386774014  12/2/2015    I-131      -2.36E-03      5.98E-03    l.77E-02 u CF         COL       38677~015  12/2/2015    I-131       2.45E-03      4.34E-03    l.54E-02 u CF         ONS-1     386774016  12/2/2015    I-131      -6.17E-03      5.35E-03    l.23E-02 u CF         ONS-2     386774017  12/2/2015    I-131      -5.29E-03      5.67E-03    l.54E-02 u CF         ONS-3     386774018  12/2/2015    1-131      -4.49E-03      7.30E-03   2.08E-02  u CF         ONS-4     386774019  12/2/2015    I-131      -6.53E-03      4.85E-03    l.07E-02 u CF         ONS-5     386774020  12/2/2015    I-131      -3.38E-03      4.13E-03    1.20E-02 u CF         ONS-6     386774021  12/2/2015    I-131      -2.22E-03      3.41E-03    1.03E-02 u CF         NBF       387341012  12/9/2015    I-131      -4.29E-03      5.61E-03    1.59E-02 u CF         SBN       387341013  12/9/2015    I-131      -6.67E-04      5.14E-03    l.63E-02 u CF         DOW       387341014  12/9/2015    I-131      -5.22E-03      6.05E-03    l.53E-02 u CF         COL       387341015  12/9/2015    I-131      -1.02E-02      6.36E-03    l.50E-02 u CF         ONS-1     387341016  121912015    I-131      -l.13E-03      4.85E-03    l.53E-02 u CF         ONS-2     387341017  12/9/2015    I-131        1.76E-03   . 4.43E-03    l.56E-02 u CF         ONS-3     387341018  12/9/2015    I-131       8.26E-03      6.74E-03   2.47E-02  u CF         ONS-4     387341019  12/9/2015    I-131      -1.26E-03      5.45E-03
* l.78E-02 u CF         ONS-5     387341020  12/9/2015    I-131      -1.15E-03      5.71E-03    l.83E-02 u CF         ONS-6     387341021  121912015    I-131      -9.80E-03      7.06E-03    l.62E-02 u CF         NBF       387887012 12/16/2015    I-131       2.55E-03      7.60E-03   2.57E-02  u CF         SBN       387887013 12/16/2015    I-131        1.07E-02     l.02E-02   3.60E-02  u CF         DOW       387887014 12/16/2015    I-131       2.29E-04      6.42E-03   2.14E-02  u CF         COL       387887015 12/16/2015    I-131      -l.31E-03      5.37E-03    l.69E-02 u CF         ONS-1     387887016 12/16/2015    I-131        9.34E-05     5.23E-03    1.52E-02 u CF         ONS-2     387887017 12/16/2015    I-131       -2.04E-03     8.04E-03   2.50E-02  u CF         ONS-3     387887018 12/16/2015    I-131        1.83E-03     7.33E-03   2.47E-02  u CF         ONS-4     387887019 12/16/2015    I-131       2.59E-03      6.26E-03   2.15E-02  u CF         ONS-5     387887020 12/16/2015    I-131       -8.73E-04     5.89E-03    l.94E-02 u CF         ONS-6     387887021 12/16/2015    I-131       -l.87E-03     6.08E-03    l.90E-02 u D-43

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                      CONC       STD.DEV.      MDC       FLAGS TYPE      STATION       LSN      DATE      NUCLIDE        (pCi/m3)     (pCi/m3)   (pCi/m3)
CF        NBF        388145012 12/23/2015    1-131      -2.06E-03     3.SOE-03    l.02E-02 u CF         SBN       388145013 12/23/2015    1-131      -5.29E-04     5.30E-03    l.68E-02 u CF         DOW       388145014 12/23/2015    1-131       3.64E-03     6.70E-03    2.40E-02 u CF         COL       388145015 12/23/2015    1-131      -2.22E-03     7.52E-03    2.36E-02 u CF         ONS-1     388145016 12/23/2015    1-131      -l.OlE-02     6.54E-03    l.23E-02 u CF         ONS-2     388145017 12/23/2015    1-131      -3.02E-03     7.66E-03    2.27E-02 u CF         ONS-3     388145018 12/23/2015    1-131       l.OSE-03     4.65E-03    l.63E-02 u CF         ONS-4     388145019 12/23/2015    1-131      -1.29E-02     7.70E-03    1.67E-02 u CF         ONS-5     388145020 12/23/2015    1-131       9.16E-04  -  5.17E-03    l.75E-02 u CF         ONS-6     388145021 12/23/2015    1-131       8.96E-03     5.87E-03    2.19E-02 u CF        NBF        388629012 12/30/2015    I-131       2:86E-03     6.62E-03    2.36E-02 u CF         SBN       388629013 12/30/2015    1-131       9.25E-03     8.75E-03    3.12E-02 u CF        DOW        388629014 12/30/2015    1-131      -l.13E-02     8.0lE-03    l.83E-02 u CF         COL       388629015 12/30/2015    I-131       8.33E-04     8.19E-03    2.66E-02 u CF         ONS-1     388629016 12/30/2015    I-131      -6.82E-03     6.98E-03    2.00E-02 u CF        ONS-2      388629017 12/30/2015    I-131      -3.66E-03     6.13E-03    l.86E-02 u CF         ONS-3     388629018 12/30/2015    I-131      -l.77E-03     3.57E-03    l.02E-02 u CF         ONS-4     388629019 12/30/2015    1-131      -8.76E-04     6.SlE-03    2.15E-02 u CF         ONS-5     388629020 12/30/2015    1-131      -7.07E-03     5.96E-03    1.71E-02 u CF        ONS-6      388629021 12/30/2015    I-131       2.30E-03     6.21E-03    2.17E-02 u D-44

Donald C. Cook Nuclear Plant          Annual Radiological Environmental Operating Report 2015 SAMPLE                            END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN     DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         OFS-N     374475001 6/3/2015    Ac-228       9.35E+OO    5.39E+OO    l.68E+Ol u FH         OFS-N     374475001 6/3/2015   Ag-108m       3.55E-02    9.50E-Ol    3.09E+OO u FH         OFS-N     374475001 6/3/2015   Ag-llOm       2.61E-Ol    l.67E+OO    5.47E+OO u FH         OFS-N     374475001 6/3/2015    Ba-140      -l.28E+Ol    7.47E+OO    2.08E+Ol u FH         OFS-N     374475001 6/3/2015     Be-7        2.IOE+Ol    l.12E+Ol    3.41E+Ol u FH         OFS-N     374475001 6/3/2015    Ce-141        l.13E-Ol   3.IOE+OO    5.82E+OO u FH         OFS-N     374475001 6/3/2015    Ce-144       6.42E+OO    7.63E+OO    2.0lE+Ol u FH         OFS-N     374475001 6/3/2015    Co-57       -2.16E-Ol    8.52E-Ol    2.76E+OO u FH         OFS-N     374475001 6/3/2015    Co-58        2.26E+OO    l.31E+OO    4.14E+OO u FH         OFS-N     374475001 6/3/2015    Co-60       -l.20E+OO    1.31E+OO    4.05E+OO u FH         OFS-N     374475001 6/3/2015     Cr-51       l.96E+Ol    l.llE+Ol    3.48E+Ol u FH         OFS-N     374475001 6/3/2015    Cs-134       l.03E+OO    l.23E+OO    4.06E+OO U FH         OFS-N     374475001 6/3/2015    Cs-137       l.43E+Ol    2.22E+OO    3.69E+OO M FH         OFS-N     374475001 6/3/2015     Fe-59       l.81E+OO    3.06E+OO    l.03E+Ol U FH         OFS-N     374475001 6/3/2015     1-131       8.33E-01    2.46E+OO    8.llE+OO U FH         OFS-N     374475001 6/3/2015     K-40        3.03E+03    l.46E+02    3.97E+Ol FH         OFS-N     374475001 6/3/2015    La-140       9.75E-01    l.90E+OO    6.32E+OO u FH         OFS-N     374475001 6/3/2015    Mn-54       -4.85E-01    l.16E+OO    3.74E+OO u FH         OFS-N     374475001 6/3/2015    Nb-95        l.74E+OO    l.26E+OO    4.lOE+OO u FH         OFS-N     374475001 6/3/2015    Ru-103      -5.79E-Ol    1.46E+OO    4.03E+OO u FH         OFS-N     374475001 6/3/2015    Ru-106       l.36E+Ol    9.48E+OO    3.15E+Ol u FH         OFS-N     374475001 6/3/2015    Sb-124       6.09E+OO    2.96E+OO    9.46E+OO u FH         OFS-N     374475001 6/3/2015    Sb-125       1.80E+OO    2.85E+OO    9.30E+OO u FH         OFS-N     374475001 6/3/2015     Se-75       9.76E-Ol    1.34E+OO    4.48E+OO U FH         OFS-N     374475001 6/3/2015    Th-228       1.51E+OO    2.53E+OO    6.59E+OO U FH         OFS-N     374475001 6/3/2015    Zn-65       -2.41E+OO    3.09E+OO    9.93E+OO U FH         OFS-N     374475001 6/3/2015     Zr-95       4.34E-Ol    2.19E+OO    7.26E+OO U FH         ONS-N     374475002 6/3/2015    Ac-228'      2.18E+OO    5.36E+OO    l.40E+Ol U FH         ONS-N     374475002 6/3/2015   Ag-108m      -2.14E-Ol    7.82E-Ol    2.49E+OO U FH         ONS-N     374475002 6/3/2015   Ag-llOm       l.62E+OO    l.37E+OO    4.44E+OO U FH         ONS-N     374475002 6/3/2015    Ba-140      -9.76E+OO    8.21E+OO    l.95E+Ol U FH         ONS-N     374475002 6/3/2015     Be-7 .     -1.47E+Ol    1.09E+Ol    2.59E+Ol U FH         ONS-N     374475002 6/3/2015    Ce-141       3.62E+OO    2.47E+OO    4.74E+OO U FH         ONS-N     374475002 6/3/2015    C~-144        l.67E-Ol   4.97E+OO    1.67E+Ol U FH         ONS-N     374475002 6/3/2015    Co-57       -2.89E-Ol    6.48E-Ol    2.17E+OO U FH         ONS-N     374475002 6/3/2015    Co-58       -2.18E+OO    l.14E+OO    3.14E+OO U FH         ONS-N     374475002 6/3/2015    Co-60       -l.32E+OO    1.13E+OO    3.47E+OO U FH         ONS-N     374475002 6/3/2015     Cr-51      -4.68E+OO    9.24E+OO    2.96E+Ol U FH         ONS-N     374475002 6/3/2015    Cs-134      -l.22E-01    1.07E+OO    3.50E+OO U FH         ONS-N     374475002 6/3/2015    Cs-137       7.02E+OO    1.79E+OO    3.llE+OO M FH         ONS-N     374475002 6/3/2015     Fe-59       3.60E+OO    2.62E+OO    8.33E+OO U FH         ONS-N     374475002 6/3/2015     1-131       1.50E+OO    2.46E+OO    7.96E+OO U FH         ONS-N     374475002 6/3/2015     K-40        3.13E+03    1.49E+02    2.56E+Ol FH         ONS-N     374475002 6/3/2015    La-140       5.18E-Ol    1.65E+OO    5.48E+OO u FH         ONS-N     374475002 6/3/2015    Mn-54       -5.33E-Ol    9.96E-Ol    3.18E+OO u FH         ONS-N     374475002 6/3/20p     Nb-95        l.66E+OO    l.06E+OO    3.39E+OO u FH         ONS-N     374475002 6/3/2015    Ru-103      -8.87E-02    9.57E-Ol    3.22E+OO U FH         ONS-N     374475002 6/3/2015    Ru-106      -l.22E+Ol    8.85E+OO    2.69E+Ol U FH         ONS-N     374475002 6/3/2015    Sb-124       l.09E+OO    2.12E+OO    6.15E+OO U FH         ONS-N     374475002 6/3/2015    Sb-125      -8.69E-Ol    2.32E+OO    7.34E+OO U D-45

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         ONS-N     374475002  61312015     Se-75       2.81E-Ol    l.18E+OO    3.89E+OO u FH         ONS-N     374475002  6/3/2015    Th-228      -4.98E-Ol    2.15E+OO    5.42E+OO u FH         ONS-N     374475002  6/3/2015    Zn-65       -l.15E+OO    2.47E+OO    8.14E+OO u FH         ONS-N     374475002  6/3/2015     Zr-95       9.22E-Ol    l.66E+OO    5.51E+OO u FH         ONS-S     374475003  6/3/2015    Ac-228      -5.59E+OO    5.09E+OO    1.24E+Ol u FH         ONS-S     374475003  6/3/2015   Ag-108m       4.86E-Ol    8.93E-Ol    2.38E+OO u FH         ONS-S     374475003  6/3/2015   Ag-llOm      -2.69E+OO    l.31E+OO    3.59E+OO u FH         ONS-S     374475003  6/3/2015    Ba-140       1.14E+OO    5.42E+OO    l.77E+Ol u FH         ONS-S     374475003  6/3/2015     Be-7        l.48E+Ol    8.22E+OO    2.55E+Ol u FH         ONS-S     374475003  6/3/2015    Ce-141      -2.19E+OO    l.92E+OO    4.84E+OO u FH         ONS-S     374475003  6/3/2015    Ce-144      -6.00E+OO    5.20E+OO    l.59E+Ol u FH         ONS-S     374475003  6/3/2015    Co-57       -l.22E+OO    7.21E-Ol    2.lOE+OO u FH         ONS-S     374475003  6/3/2015    Co-58        2.62E-Ol    8.74E-Ol    2.95E+OO u FH         ONS-S     374475003  6/3/2015    Co-60       -I.65E+OO    l.53E+OO    3.25E+OO u FH         ONS-S     374475003  6/3/2015     Cr-51       1.14E+Ol    8.78E+OO    2.86E+Ol u FH         ONS-S     374475003  6/3/2015    Cs-134      -6.83E-Ol    9.84E-Ol    3.04E+OO u FH         ONS-S     374475003  6/3/2015    Cs-137       2.09E+Ol    l.75E+OO    2.91E+OO M FH         ONS-S     374475003  6/3/2015     Fe-59       7.16E-Ol    2.18E+OO    7.25E+OO u FH         ONS-S     374475003  6/3/2015     1-131      -l.87E+OO    2.22E+OO    7.15E+OO u FH         ONS-S     374475003  6/3/2015     K-40        3.22E+03    l.48E+02    2.62E+Ol FH         ONS-S     374475003  6/3/2015    La-140      -1.70E+OO    l.53E+OO    4.45E+OO u FH         ONS-S     374475003  6/3/2015    Mn-54        2.23E-Ol    8.48E-Ol    2.86E+OO u FH         ONS-S     374475003  6/3/2015    Nb-95       -2.17E+OO    l.78E+OO    2.90E+OO u FH         ONS-S     374475003  6/3/2015    Ru-103      -3.60E-Ol    9.48E-Ol    3.07E+OO u FH         ONS-S     374475003  6/3/2015    Ru-106       2.24E+OO    7.76E+OO    2.52E+Ol u FH         ONS-S     374475003  6/3/2015    Sb-124      -l.37E-Ol    l.82E+OO    6.09E+OO u FH         ONS-S     374475003  6/3/2015    Sb-125      -3.89E-Ol    2.44E+OO    7.04E+OO u FH         ONS-S     374475003  6/3/2015     Se-75      -3.15E-Ol    l.06E+OO    3.57E+OO u FH         ONS-S     374475003  6/3/2015    Th-228       l.OOE+OO    2.49E+OO    5.19E+OO u FH         ONS-S     374475003  6/3/2015    Zn-65        8.08E-Ol    2.51E+OO    7.22E+OO u FH         ONS-S     374475003  6/3/2015     Zr-95      -l.48E+OO    l.61E+OO    4.90E+OO u FH         OFS-S     374475004  6/3/2015    Ac-228      -8.12E+OO    6.81E+OO    l.39E+Ol u FH         OFS-S     374475004  6/3/2015   Ag-108m      -5.82E-Ol    7.97E-Ol    2.53E+OO u FH         OFS-S     374475004  6/3/2015   Ag-llOm      -7.51E-Ol    l.37E+OO    4.30E+OO u FH         OFS-S     374475004  6/3/2015    Ba-140       5.28E+OO    5.94E+OO    l.93E+Ol u FH         OFS-S     374475004  6/3/2015     Be-7        2.34E+OO    8.18E+OO    2.68E+Ol u FH         OFS-S     374475004  6/3/2015    Ce-141      -1.IIE+OO    l.59E+OO    5.00E+OO u FH         OFS-S     374475004  6/3/2015    Ce-144      -l.50E+Ol    6.37E+OO    l.64E+Ol u FH         OFS-S     374475004  6/3/2015    Co-57        7.92E-Ol    7.12E-Ol    2.26E+OO u FH         OFS-S     374475004  6/3/2015    Co-58        4.02E-Ol    9.96E-Ol    3.34E+OO u FH         OFS-S     374475004  6/3/2015    Co-60        9.47E-Ol    l.18E+OO    3.83E+OO u FH         OFS-S     374475004  6/3/2015     Cr-51      -2.52E-Ol    8.87E+OO    2.96E+Ol u FH         OFS-S     374475004  6/3/2015    Cs-134      -4.12E-Ol    l.02E+OO    3.35E+OO u FH         OFS-S     374475004  6/3/2015    Cs-137       7.44E-Ol    2.08E+OO    3.26E+OO u FH         OFS-S     374475004' 6/3/2015     Fe-59      -4.09E+OO    2.74E+OO    7.93E+OO u FH         OFS-S     374475004  6/3/2015     1-131      -4.56E+OO    2.60E+OO    7.54E+OO u FH         OFS-S     374475004  6/3/2015     K-40        3.04E+03    l.50E+02    2.74E+Ol FH         OFS-S     374475004  6/3/2015    La-140      -l.54E+OO    1.58E+OO    4.82E+OO u FH         OFS-S     374475004  6/3/2015    Mn-54         l.09E-Ol   9.09E-Ol    3.04E+OO u FH         OFS-S     374475004  6/3/2015    Nb-95        2.42E+OO    2.13E+OO    3.22E+OO u D-46

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     ~TD.DEV.        MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         OFS-S     374475004  6/3/2015     Ru-103     -l.90E+OO    l.12E+OO    3.21E+OO u FH         OFS-S     374475004  6/3/2015     Ru-106     -3.57E+OO    8.54E+OO    2.70E+Ol u FH         OFS-S     374475004  6/3/2015     Sb-124      9.46E-Ol    2.40E+OO    7.0lE+OO u FH         OFS-S     374475004  6/3/2015     Sb-125      2.71E+OO    2.46E+OO    8.0lE+OO u FH         OFS-S     374475004  6/3/2015      Se-75      1.17E+OO    1.21E+OO    4.0lE+OO u FH         OFS-S     374475004  6/3/2015     Th-228     -3.35E+OO    2.90E+OO    5.67E+OO u FH         OFS-S     374475004  6/3/2015      Zn-65      5.20E-Ol    2.69E+OO    7.66E+OO u FH         OFS-S     374475004  6/3/2015      Zr-95      l.96E+OO    2.05E+OO    6.02E+OO u FH         SLM5WNW   377393001 7/16/2015     Ac-228     -2.38E+Ol    l.24E+Ol    3.22E+Ol u FH         SLM5WNW   377393001 7/16/2015   Ag-108m        l.12E-Ol   2.07E+OO    6.66E+OO u FH         SLM5WNW   377393001 7/16/2015   Ag-llOm       8.17E+OO    4.56E+OO    l.28E+Ol u FH         SLM5WNW   377393001 7/16/2015     i3a-140     l.25E+Ol    l.20E+Ol    4.IOE+Ol u FH         SLM5WNW   377393001 7/16/2015       B*e-7     3.llE+Ol    2.05E+Ol    6.66E+Ol u FH         SLM5WNW   377393001 7/16/2015     Ce-141     -2.59E+OO    3.94E+OO    l.17E+Ol u FH         SLMSWNW   377393001 7/16/2015     Ce-144     -l.31E+OO    l.35E+Ol    4.30E+Ol u FH         SLM5WNW   377393001 7/16/2015      Co-57      6.90E-01    l.66E+OO    5.36E+OO u FH         SLM5WNW   377393001 7/16/2015      Co-58     -2.19E+OO    3.07E+OO    7.98E+OO u FH         SLM5WNW   377393001 7/16/2015      Co-60      4.43E+OO    3.22E+OO     l.lOE+Ol u FH         SLM5WNW   377393001 7/16/2015      Cr-51      6.14E+OO    2.09E+Ol    6.91E+Ol u FH         SLM5WNW   377393001 7/16/2015     Cs-134      l.35E+OO    2.79E+OO    9.31E+OO u FH         SLM5WNW   377393001 7/16/2015     Cs-137      l.67E+Ol    4.83E+OO    8.75E+OO M FH         SLM5WNW   377393001 7/16/2015      Fe-59     -9.SSE-01    6.07E+OO    2.0lE+Ol u FH         SLM5WNW   377393001 7/16/2015      1-131     -3.42E-Ol    4.37E+OO     l.42E+Ol u FH         SLM5WNW   377393001 7/16/2015      K-40       3.73E+03    2.12E+02    6.82E+Ol FH         SLM5WNW   377393001 7/16/2015     La-140     -3.SOE+OO    3.82E+OO     l.06E+Ol u FH         SLM5WNW   377393001 7/16/2015      Mn-54      8.85E-Ol    2.25E+OO    7.48E+OO u FH         SLM5WNW   377393001 7/16/2015      Nb-95      2.83E+OO    2.51E+OO    8.48E+OO u FH         SLM5WNW   377393001 7/16/2015     Ru-103     -3.21E+OO    2.35E+OO    6.99E+OO u FH         SLM5WNW   377393001 7/16/2015     Ru-106     -1.13E+Ol    l.91E+Ol    6.06E+Ol u FH         SLM5WNW   377393001 7/16/2015     Sb-124      4.02E+OO    4.95E+OO     l.77E+Ol u FH         SLMSWNW   377393001 7/16/2015     Sb-125      l.69E+Ol    7.65E+OO    2.35E+Ol u FH         SLM5WNW   377393001 7/16/2015      Se-75     -1.07E+OO    2.63E+OO    8.54E+OO u FH         SLM5WNW   377393001 7/16/2015     Th-228      8.45E+OO    6.91E+OO     l.18E+Ol u FH         SLM5WNW   377393001 7/16/2015      Zn-65     -5.91E+OO    5.81E+OO     l.75E+Ol u FH         SLM5WNW   377393001 7/16/2015      Zr-95     -3.64E+OO    4.64E+OO     l.43E+Ol u FH         TRT5W     377393002 7/16/2015     Ac-228     -8.95E+OO    l.ISE+Ol    3.57E+Ol u FH         TRT5W     377393002 7/16/2015    Ag-108m     -l.09E+OO    l.82E+OO    5.65E+OO u FH         TRT5W     377393002 7/16/2015    Ag-llOm      2.09E+OO    3.12E+OO     l.07E+Ol u FH         TRTSW     377393002 7/16/2015     Ba-140      l.64E+Ol    1.21E+Ol    4.07E+Ol u FH         TRT5W     377393002 7/16/2015       Be-7      3.SOE+Ol    2.85E+Ol    5.98E+Ol u FH         TRT5,W    377393002 7/16/2015     Ce-141      6.75E+OO    4.71E+OO     l.35E+Ol u FH         TRT5W     377393002 7/16/2015     Ce-144     -4.42E+OO    l.41E+Ol    4.44E+Ol u FH         TRT5W     377393002 7/16/2015      Co-57      l.28E+OO    2.14E+OO    6.23E+OO u FH         TRT5W     377393002 7/16/2015      Co-58      2.17E+OO    2.39E+OO    7.49E+OO u FH         TRT5W     377393002 7/16/2015      Co-60      -3.25E-Ol   3.04E+OO    9.69E+OO u FH         TRT5W     377393002 7/16/2015      Cr-51      2.57E+Ol    2.14E+Ol    7.23E+Ol u FH         TRT5W     377393002 7/16/2015     Cs-134      4.42E+OO    2.58E+OO    9.53E+OO u FH         TRT5W     377393002 7/16/2015     Cs-137      l.13E+Ol    4.15E+OO     l.22E+Ol u FH         TRT5W     377393002 7/16/2015      Fe-59      5.77E+OO    5.67E+OO     l.94E+Ol u FH         TRT5W     377393002 7/16/2015      I-131     -3.89E+OO    5.18E+OO     l.62E+Ol u D-47

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         TRT5W     377393002 7/16/2015     K-40        2.66E+03    l.66E+02    6.IOE+Ol FH         TRT5W     377393002 7/16/2015    La-140       l.65E+OO    4.08E+OO    l.42E+OI u FH         TRT5W     377393002 7/16/2015    Mn-54       -2.42E+OO    2.27E+OO    6.68E+OO u FH         TRT5W     377393002 7/16/2015    Nb-95       -2.29E+OO    2.43E+OO    7.37E+OO u FH         TRT5W     377393002 7/16/2015    Ru-103      -3.65E+OO    2.73E+OO    7.67E+OO u FH         TRT5W     377393002 7/16/2015    Ru-106      -3.67E+OO    2.13E+Ol    6.72E+Ol u FH         TRT5W     377393002 7/16/2015    Sb-124      -2.35E+OO    5.63E+OO    l.76E+Ol u FH         TRT5W     377393002 7/16/2015    Sb-125       7.26E+OO    6.37E+OO    2.14E+Ol u FH         TRT5W     377393002 7/16/2015     Se-75       3.36E+OO    2.94E+OO    9.94E+OO u FH         TRT5W     377393002 7/16/2015    Th-228       2.12E-Ol    5.0IE+OO    l.37E+Ol u FH         TRT5W     377393002 7/16/2015     Zn-65       l.04E+OO    7.60E+OO    2.17E+Ol u FH         TRT5W     377393002 7/16/2015     Zr-95      -7.41E+OO    5.00E+OO    l.4IE+Ol u FH         OFS-N     377953001 7/23/2015    Ac-228      -6.96E+OO    6.46E+OO    l.38E+Ol u FH         OFS-N     377953001 7/23/2015   Ag-108m       l.42E+OO    8.78E-OI    2.78E+OO u FH         OFS-N     377953001 7/23/2015   Ag-llOm       4.BE-01     l.38E+OO    4.64E+OO u FH         OFS-N     377953001 7/23/2015    Ba-140       9.82E+OO    7.05E+OO    2.00E+Ol u FH         OFS-N     377953001 7/23/2015     Be-7        2.22E+OO    8.94E+OO    2.95E+Ol u FH         OFS-N     377953001 7123/2015    Ce-141       2.94E+OO    2.70E+OO    5.53E+OO u FH         OFS-N     377953001 7/23/2015    Ce-144      -3.36E+OO    5.96E+OO    l.90E+Ol u FH         OFS-N     377953001 7/23/2015    Co-57        l.29E+OO    8.2IE-Ol    2.55E+OO u FH         OFS-N     377953001 7123/2015    Co-58        8.64E-Ol    9.94E-Ol    3.35E+OO u FH         OFS-N*    377953001 7123/2015    Co-60        l.88E+OO    l.72E+OO    3.98E+OO u FH         OFS-N     377953001 7/23/2015     Cr-51      -2.73E+OO    9.62E+OO    3.21E+Ol U FH         OFS-N     377953001 7/23/2015    Cs-134      -l.21E+OO    l.07E+OO    3.36E+OO U FH         OFS-N     377953001 7/23/2015    Cs-137       7.58E+OO    l.55E+OO    3.53E+OO M FH         OFS-N     377953001 7/23/2015     Fe-59      -4.92E-Ol    2.81E+OO    7.97E+OO U FH         OFS-N     377953001 7/23/2015     I-131       3.21E+OO    2.67E+OO    8.76E+OO U FH         OFS-N     377953001 7/23/2015     K-40        2.90E+03    l.47E+02    2.83E+Ol FH         OFS-N     377953001 7/23/2015    La-140      -l.91E+OO    l.70E+OO    5.16E+OO u FH         OFS-N     377953001 7/23/2015    Mn-54       -l.59E+OO    l.42E+OO    3.IOE+OO u FH         OFS-N     377953001 7123/2015    Nb-95        l.18E+OO    l.04E+OO    3.47E+OO u FH         OFS-N     377953001 7/23/2015    Ru-103      -2.17E+OO    l.22E+OO    3.48E+OO u FH         OFS-N     377953001 7/23/2015    Ru-106       6.45E+OO    8.99E+OO    2.92E+Ol u FH         OFS-N     377953001 7123/2015    Sb-124       6.47E+OO    2.58E+OO    6.88E+OO u FH         OFS-N     377953001 7/23/2015    Sb-125       2.30E+OO    2.56E+OO    8.44E+OO u FH         OFS-N     377953001 7/23/2015     Se-75      -5.70E-Ol    l.25E+OO    4.18E+OO u FH         OFS-N     377953001 7/23/2015    Th-228       2.69E+OO    3.00E+OO    5.14E+OO u FH         OFS-N     377953001 7/23/2015     Zn-65      -8.0SE+OO    3.35E+OO    8.08E+OO u FH         OFS-N     377953001 7/23/2015     Zr-95       l.34E+OO    I.SOE+OO    6.09E+OO u FH         ONS-N     377953002 7123/2015    Ac-228      -l.94E+OO    6.63E+OO    l.59E+Ol u FH         ONS-N     377953002 7/23/2015   Ag-108m      -2.IOE+OO    1.1 IE+OO   2.95E+OO u FH         ONS-N     377953002 7/23/2015   Ag-llOm      -l.41E+OO    1.53E+OO    4.81E+OO u FH         ONS-N     377953002 7/23/2015    Ba-140       7.20E+OO    7.34E+OO    2.37E+Ol u FH         ONS-N     377953002 7/23/2015     Be-7       -9.98E+OO    9.93E+OO    3.05E+Ol u FH         ONS-N     377953002 7/23/2015    Ce-141       2.38E+OO    2.29E+OO    6.43E+OO u FH         ONS-N     377953002 7/23/2015    Ce-144       4.42E+OO    6.79E+OO    2.17E+Ol u FH         ONS-N     377953002 7/23/2015    Co-57        6.62E-Ol*   9.25E-01    2.95E+OO u FH         ONS-N     377953002 7/23/2015. Co-58       -l.25E+OO    l.21E+OO    3.79E+OO u FH         ONS-N     377953002 7123/2015    Co-60       -5.88E-Ol    l.42E+OO    4.49E+OO u FH         ONS-N     377953002 7/23/2015     Cr-51      -l.43E+Ol    l.16E+Ol    3.59E+Ol u D-48

Donald C. Cook Nuclear Plant            Annual Radiological Environmental Operating Report 2015 SAMPLE                              END                       CONC     STD.DEV.       MDC       FLAGS TYPE      STATION       LSN       DATE      NUCLIDE          (pCi/kg)   (pCi/kg)   (pCi/kg)
FH         ONS-N     377953002  7/23/2015    Cs-134       2.34E+OO     1.33E+OO   4.23E+OO  u FH         ONS-N     377953002  7/23/2015    Cs-137       2.26E+Ol     3.36E+OO   3.86E+OO  M FH         ONS-N     377953002  7/23/2015     Fe-59      -6.0IE+OO     3.40E+OO   9.36E+OO  u FH         ONS-N     377953002  7/23/2015     I-131       3.96E+OO     3.07E+OO   9.91E+OO  u FH         ONS-N     377953002  7/23/2015     K-40        3.58E+03     l.67E+02   3.17E+Ol FH         ONS-N     377953002  7/23/2015    La-140      -l.86E+OO     l.99E+OO   6.lOE+OO  u FH         ONS-N     377953002  7/23/2015    Mn-54        5.68E-01     l.13E+OO   3.78E+OO  u FH         ONS-N     377953002  7/23/2015    Nb-95        l.88E+OO     l.27E+OO   4.15E+OO  u FH         ONS-N     377953002  7/23/2015    Ru-103      -8.28E-01     l.28E+OO   4.03E+OO  u FH         ONS-N     377953002  7/23/2015    Ru-106      -4.89E+OO     l.04E+Ol   3.25E+Ol  u FH         ONS-N     377953002  7/23/2015    Sb-124      -3.20E+OO     2.70E+OO   8.04E+OO  u FH         ONS-N     377953002  7/23/2015    Sb-125      -3.41E+OO     3.14E+OO   9.69E+OO  U FH         ONS-N     377953002  7/23/2015     Se-75      -1.34E+OO     l.45E+OO   4.65E+OO  U FH         ONS-N     377953002  7/23/2015    Th-228       7.54E-Ol     3.49E+OO   6.97E+oo* u FH         ONS-N     377953002  7/23/2015     Zn-65      -5.74E+OO     3.48E+OO   9.84E+OO  U FH         ONS-N     377953002  7/23/2015     Zr-95      -5.49E-Ol     2.06E+OO   6.82E+OO  U FH         ONS-S     377953003  7/23/2015    Ac-228       3.49E+OO     7.33E+OO   l.71E+Ol  U FH         ONS-S     377953003  7/23/2015   Ag-108m       l.31E+OO     9. l 7E-OI 2.91E+OO  U FH         ONS-S     377953003  7/23/2015   Ag-llOm      -5.23E-Ol     l.55E+OO   5.07E+OO  U FH         ONS-S     377953003  7/23/2015    Ba-140      -9.71E+OO     8.28E+OO   2.55E+OI  U FH         ONS-S     377953003  7123/2015     Be-7        l.08E+Ol
* l.OIE+Ol   3.34E+OI  U FH         ONS-S     377953003  7/23/2015    Ce-141      -l.82E+OO     2.70E+OO   6.04E+OO  u FH         ONS-S     377953003  7/23/2015    Ce-144      -3.39E-01     5.82E+OO   l.84E+OI  u FH         ONS-S     377953003  7/23/2015    Co-57        l.60E+OO     8.31E-OI   2.44E+OO  u FH         ONS-S     377953003  7/23/2015    Co-58        6. l 7E-01   l.28E+OO   4.0IE+OO  u FH         ONS-S     377953003  7/23/2015    Co-60        l.12E+OO     l.27E+OO   4.26E+OO  u FH         ONS-S     377953003  7/23/2015     Cr-51      -2.27E+OO     l.13E+OI   3.64E+OI  u FH         ONS-S     377953003  7/23/2015    Cs-134      -6.42E-OI     1.56E+OO   4.08E+OO  u FH         ONS-S     377953003  7/23/2015    Cs-137       3.88E+OO     2.0IE+OO   3.98E+OO  u FH         ONS-S     377953003  7/2.3/2015    Fe-59       6.50E+OO     3.44E+OO   l.05E+OI  u FH         ONS-S     377953003  7/23/2015     I-131       3.59E+OO     3.69E+OO   l.18E+OI  u FH         ONS-S     377953003. 7/23/2015     K-40        2.87E+03     1.38E+02   3.69E+Ol FH         ONS-S     377953003  7/23/2015    La-140       3:67E+OO     2.95E+OO   8.60E+OO  u FH         ONS-S     377953003  7/23/2015    Mn-54        l.43E+OO*    L29E+OO    3.73E+OO  u FH         ONS-S     377953003  7123/2015    Nb-95        5.35E-Ol     l.22E+OO   4.lOE+OO  u FH         ONS-S     377953003  7/23/2015    Ru-103      -1.39E+OO     l.46E+OO   3.97E+OO  u FH         ONS-S     377953003  7/23/2015    Ru-106      -8.15E+OO     9.51E+OO   2.97E+Ol  u FH         ONS-S     377953003  7/23/2015    Sb-124      -3.48E+OO     2.64E+OO   7.57E+OO  u FH         ONS-S     377953003  7/23/2015    Sb-125       8.26E-01     2.70E+OO   9.06E+OO  u FH         ONS-S     377953003  7/23/2015     Se-75      -l.43E+OO     l.38E+OO   4.31E+OO  u FH         ONS-S     377953003  7/23/2015    Th-228        l.94E-OI    3.41E+OO   5.28E+OO  u FH         ONS-S     377953003  7/23/2015     Zn-65      -l.72E+OO     2.99E+OO   9.49E+OO  u FH         ONS-S     377953003  7/23/2015     Zr-95       8.07E-OI     2.09E+OO   7.05E+OO  u FH         OFS-S     377953004  7123/2015    Ac-228      -1.31E+OO     5.32E+OO   l.42E+OI  u FH         OFS-S     377953004  7/23/2015   Ag-108m      -3.38E-OI     7.84E-OI   2.53E+OO  u FH         OFS-S     377953004  7/23/2015   Ag-llOm       2.12E-OI     1.37E+OO   4.55E+OO  u FH         OFS-S     377953004  7/23/2015    Ba-140       l.69E+OO     5.99E+OO   l.95E+Ol  u FH         OFS-S     377953004  7/23/2015     Be-7        8.00E+OO     8.02E+OO   2.61E+OI  u FH         OFS-S     377953004  7/23/2015    Ce-141       3.75E-OI     l.54E+OO   4.97E+OO  u FH         OFS-S     377953004  7/23/2015    Ce-144      -5.34E+OO     5.33E+OO   l.64E+Ol  u D-49

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
FH         OFS-S     377953004 7/23/2015    Co-57        6.61E-02    6.89E-01    2.23E+OO u FH         OFS-S     377953004 7/23/2015    Co-58       -9.94E-01    l.19E+OO    3.27E+OO u FH         OFS-S     377953004 7/23/2015    Co-60        3.07E+OO    l.32E+OO    3.99E+OO u FH         OFS-S     377953004 7/23/2015     Cr-51       9.24E+OO    l.lOE+Ol    2.90E+Ol u FH         OFS-S     377953004 7/23/2015    Cs-134       1.70E-01    l.02E+OO    3.32E+OO u FH         OFS-S     377953004 7/23/2015    Cs-137       l.38E+OO    l.83E+OO    3.23E+OO u FH         OFS-S     377953004 7/23/2015     Fe-59       3.87E-02    2.43E+OO    7.93E+OO u FH         OFS-S     377953004 7/23/2015     I-131      -9.88E-01    2.35E+OO    7.67E+OO u FH         OFS-S     377953004 7/23/2015     K-40        2.68E+03    l.33E+02    2.70E+Ol FH         OFS-S     377953004 7/23/2015    La-140      -5.25E+OO    3.17E+OO    6.08E+OO u FH         OFS-S     377953004 7/23/2015    Mn-54       -8.45E-01    9.61E-01    3.05E+OO u FH         OFS-S     377953004 7/23/2015    Nb-95        9.09E-01    l.OOE+OO    3.36E+OO u FH         OFS-S     377953004 7/23/2015    Ru-103      -l.32E+OO    9.96E-01    2.96E+OO u FH         OFS-S     377953004 7/23/2015    Ru-106      -4.82E+OO    8.28E+OO    2.59E+Ol u FH         OFS-S     377953004 7/23/2015    Sb-124      -2.50E+OO    2.07E+OO    6.09E+OO u FH         OFS-S     377953004 7/23/2015    Sb-125       l.21E+OO    2.24E+OO    7.37E+OO u FH         OFS-S     377953004 7/23/2015     Se-75      -5.06E-01    1.llE+OO    3.69E+OO u FH         OFS-S     377953004 7/23/2015    Th-228       2.55E+OO    2.60E+OO    5.46E+OO u FH         OFS-S     377953004 7/23/2015    Zn-65       -3.18E+OO    2.54E+OO    7.56E+OO u FH         OFS-S     377953004 7/23/2015     Zr-95       4.49E+OO    2.09E+OO    6.43E+OO u D-50

Donald C. Cook Nuclear Plant           Annual Radiological Environmental Operating Report 2015 SAMPLE                             END                       CONC     STD.DEV.       MDC      FLAGS TYPE      STATION       LSN      DATE      NUCLIDE          (pCi/kg)  (pCi/kg)    (pCi/kg)
SE         SL-2      371324001 411512015    Ac-228       l.72E+02    6.45E+Ol    l.30E+02 SE         SL-2      371324001 411512015   Ag-108m      -6.78E+OO    9.19E+OO
* 3.05E+Ol u SE         SL-2      371324001 411512015   Ag-llOm      -2.88E+Ol    l.67E+Ol    4.56E+Ol u SE         SL-2      371324001 411512015    Ba-140      -7.65E+Ol    5.50E+Ol    l.63E+02 u SE         SL-2      371324001 411512015     Be-7       -7.19E+Ol    l.03E+02    2.91E+02 u SE         SL-2      371324001 411512015    Ce-141       l.66E+Ol    l.38E+Ol    4.93E+Ol u SE         SL-2      371324001 411512015    Ce-144      -l.22E+OO    4.73E+Ol    l.70E+02 u SE         SL-2      371324001 411512015    Co-57       -l.37E+Ol    6.79E+OO    l.97E+Ol u SE         SL-2      371324001 411512015    Co-58       -7.70E+OO    l.31E+Ol    3.91E+Ol u SE         SL-2      371324001 411512015    Co-60        9.15E+OO    l.17E+Ol    4.08E+Ol u SE         SL-2      371324001 4/15/2015     Cr-51      -l.31E+OO    8.41E+Ol    3.02E+02 u SE         SL-2      371324001 4/15/2015    Cs-134       2.52E+Ol    l.43E+Ol    4.75E+Ol u SE         SL-2      371324001 4/15/2015    Cs-137      -8.44E-Ol    l.26E+Ol    4.20E+Ol u SE         SL-2      371324001 411512015     Fe-59      -7.52E+OO    2.56E+Ol    8.42E+Ol u SE         SL-2      371324001 411512015     1-131      -3.40E-Ol    l.53E+Ol    5.43E+Ol u SE         SL-2      371324001 411512015     K-40        6.57E+03    5.18E+02    2.75E+02 SE         SL-2      371324001 4/15/2015    La-140       3.84E+OO    l.58E+Ol    5.46E+Ol u SE         SL-2      371324001 4/15/2015    Mn-54        7.97E+OO    l.17E+Ol    4.16E+Ol u SE         SL-2      371324001 4/15/2015    Nb-95       -1.77E+Ol    1.37E+Ol    3.47E+Ol u SE         SL-2      371324001 4/15/2015    Ru-103       9.27E+OO    1.05E+Ol    3.72E+Ol u SE         SL-2      371324001 4/15/2015    Ru-106      -5.64E+Ol    l.04E+02    3.37E+02 u SE         SL-2      371324001 411512015    Sb-124      -5.85E+OO    2.60E+Ol    8.49E+Ol u SE         SL-2      371324001 4/15/2015    Sb-125      -l.56E+Ol    2.69E+Ol    9.04E+Ol u SE        SL-2       371324001 4/15/2015     Se-75       4.35E+OO    l.19E+Ol    4.lOE+Ol u SE        SL-2       371324001 4/15/2015    Th-228       1.25E+02    3.79E+Ol    5.52E+Ol SE        SL-2       371324001 4/15/2015    Zn-65        1.58E+Ol    3.08E+Ol    1.06E+02 u SE         SL-2      371324001 4/15/2015     Zr-95       8.14E+OO    l.97E+Ol    7.05E+Ol u SE         SL-3      371324002 4/15/2015    Ac-228       1.54E+02    4.51E+Ol    9.05E+Ol SE         SL-3      371324002 4/15/2015   Ag-108m       5.30E+OO    5.91E+OO    2.IIE+Ol u SE         SL-3      371324002 4/15/2015   Ag-llOm       l.30E+Ol    9.21E+OO    3.17E+Ol u SE         SL-3      371324002 4/15/2015    Ba-140       4.40E+Ol    3.30E+Ol    l.15E+02 u SE         SL-3      371324002 4/15/2015     Be-7        3.08E+Ol    6.78E+Ol    2.09E+02 u SE         SL-3      371324002 4/15/2015    Ce-141       2.26E+OO    l.07E+Ol    3.81E+Ol u SE         SL-3      371324002 4/15/2015    Ce-144      -3.98E+OO    3.92E+Ol    l.39E+02 u SE         SL-3      371324002 4/15/2015    Co-57        4.65E+OO    5.13E+OO    l.86E+Ol u SE        SL-3       371324002 411512015    Co-58        2.59E+OO    7.18E+OO    2.48E+Ol u SE        SL-3       371324002 4/15/2015    Co-60       -4.63E+OO    9.36E+OO    2.57E+Ol u SE        SL-3       371324002 411512015    Cr-51        2.45E+Ol    6.08E+Ol    2.13E+02 u SE        SL-3       371324002 4/15/2015    Cs-134       l.56E+Ol    9.0IE+OO    3.05E+Ol u SE        SL-3       371324002 4/15/2015    Cs-137       l.86E+Ol    8.58E+OO    2.85E+Ol u SE         SL-3      371324002 4/15/2015     Fe-59*     -l.31E-Ol    l.46E+Ol    4.94E+Ol u SE         SL-3      371324002 4/15/2015     1-131      -l.82E+OO    l.06E+Ol    3.80E+Ol u SE         SL-3      371324002 4/15/2015     K-40        6.20E+03    3.95E+02    l.60E+02 SE         SL-3      371324002 4/15/2015    La-140       l.84E+OO    l.06E+Ol    3.56E+Ol u SE         SL-3      371324002 4/15/2015    Mn-54       -3.15E+OO    7.22E+OO    2.38E+Ol u SE         SL-3      371324002 4/15/2015    Nb-95        4.69E+OO    7.42E+OO    2.59E+Ol u SE        SL-3       371324002 4/15/2015    Ru-103      -l.15E+Ol    7.13E+OO. 2.lOE+Ol u SE        SL-3       371324002 411512015    Ru-106      -3.47E+Ol    6.74E+Ol    1.96E+02 u SE        SL-3       371324002 4/15/2015    Sb-124       3.45E+Ol    l.66E+Ol    5.80E+Ol u SE        SL-3       371324002 4/15/2015    Sb-125      -7.05E+OO    l.85E+Ol    6.42E+Ol u D-51

Donald C. Cook Nuclear Plant              Annual Radiological Environmental Operating Report 2015 SAMPLE                                END                      CONC      STD.DEV.       MDC        FLAGS TYPE      STATION        LSN        DATE      NUCLIDE         (pCi/kg)   (pCi/kg)    (pCi/kg)
SE         SL-3       371324002   4/15/2015      Se-75     -2.71E+OO    8.42E+OO    2.94E+Ol u SE         SL-3       371324002 ' 4/15/2015     Th-228      2.00E+02    2.40E+Ol    3.90E+Ol SE         SL-3       371324002   4/15/2015     Zn-65      -l.37E+Ol    2.04E+Ol    5.49E+Ol u SE         SL-3       371324002   4/15/2015      Zr-95     -6.33E+OO    l.18E+Ol    3.88E+Ol u SE         SL-2       383226001   10/12/2015    Ac-228      l.11E+02    5.61E+Ol    1.41E+02 u SE         SL-2       383226001   10/12/2015  Ag-108m       8.92E-01    5.92E+OO    2.lOE+Ol u SE         SL-2       383226001   1011212015  Ag-JJOm       1.80E+Ol    1.lOE+Ol    3.71E+Ol u SE         SL-2       383226001   1011212015    Ba-140      5.73E+OO    3.33E+Ol    1.15E+02 u SE         SL-2       383226001   1011212015     Be-7       6.58E+Ol    5.63E+Ol    1.99E+02 u SE         SL-2       383226001   10/12/2015    Ce-141      2.04E+Ol    1.22E+Ol    4.19E+Ol u SE         SL-2       383226001   10/12/2015    Ce-144      2.64E+Ol    4.29E+Ol    1.37E+02 u SE         SL-2       383226001   10/12/2015    Co-57      -3.56E-01    5.67E+OO    1.79E+Ol u SE         SL-2       383226001   10/12/2015    Co-58       7.89E+OO    7.50E+OO    2.61E+Ol u SE         SL-2       383226001   10/12/2015    Co-60      -1.65E+Ol    9.70E+OO    2.36E+Oi u SE         SL-2       383226001   10/12/2015     Cr-51      8.88E+Ol    6.39E+Ol    2.22E+02 u SE         SL-2       383226001   10/12/2015    Cs-134      3.31E+OO    8.88E+OO    3.07E+Ol u SE         SL-2       383226001   10/12/2015    Cs-137     -2.68E+OO    7.28E+OO    2.49E+Ol u SE         SL-2       383226001   10/12/2015     Fe-59      4.39E+OO    1.82E+Ol    5.33E+Ol u SE         SL-2       383226001   10/12/2015     1-131      2.33E+Ol    1.17E+Ol    4.02E+Ol u SE         SL-2       383226001   10/12/2015     K-40       4.89E+03    3.40E+02    2.15E+02 SE         SL-2       383226001   10/12/2015    La-140      l.39E+Ol    l.24E+Ol    4.31E+Ol u SE         SL-2       383226001   10/12/2015    Mn-54      -5.12E+OO    7.42E+OO    2.40E+Ol u SE       - SL-2       383226001   10/12/2015    Nb-95       5.18E+OO    6.71E+OO    2.35E+Ol u
 .SE         SL-2       383226001   10/12/2015    Ru-103     -3.93E+OO    6.85E+OO    2.30E+Ol u SE         SL-2       383226001   10/12/2015    Ru-106      3.23E+Ol    5.54E+Ol    l.98E+02 u SE         SL-2     . 383226001   10/12/2015    Sb-124      l.46E+Ol    l.57E+Ol    5.48E+Ol u SE         SL-2       383226001   10/12/2015    Sb-125      l.75E+OO    l.78E+Ol    6.30E+Ol u SE         SL-2       383226001   10/12/2015     Se-75     -2.58E-01    8.46E+OO    3.00E+Ol u SE         SL-2       383226001   10/12/2015    Th-228      l.11E+02    2.97E+Ol    4.33E+Ol SE         SL-2       383226001   10/12/2015    Zn-65      -3.70E+Ol    2.60E+Ol    6.30E+Ol u SE         SL-2       383226001   10/12/2015     Zr-95      l.61E+Ol    l.24E+Ol    4.33E+Ol u SE         SL-3       383226002   10/12/2015    Ac-228      2.04E+02    7.62E+Ol     1.86E+02 UI SE         SL-3       383226002   10/12/2015   Ag-108m      5.03E-01    6.89E+OO    2.40E+Ol u SE         SL-3       383226002   10/12/2015   Ag-JJOm      4.52E+OO    l.l7E+Ol    4.04E+Ol u SE         SL-3       383226002   10/12/2015    Ba-140     -2.66E-01    3.80E+Ol     l.36E+02 u SE         SL-3       383226002   10/12/2015     Be-7      -7.53E+Ol    7.94E+Ol    2.49E+02 u SE         SL-3       383226002   10/12/2015    Ce-141     -1.lOE+Ol    1.lOE+Ol    3.73E+Ol u SE         SL-3       383226002   10/12/2015    Ce-144     -l.36E+Ol    3.91E+Ol     l.41E+02 u SE         SL-3       383226002   10/12/2015    Co-57       1.27E+OO    4.82E+OO     l.80E+Ol u SE         SL-3       383226002   10/12/2015    Co-58      -l.30E+Ol    9.39E+OO    2.64E+Ol u*
SE         SL-3       383226002   10/12/2015    Co-60       3.51E+Ol    l.17E+Ol    4.56E+Ol u SE         SL-3       383226002   10/12/2015     Cr-51     -3.58E+Ol    7.34E+Ol    2.56E+02 u SE         SL-3       383226002   10/12/2015    Cs-134      3.96E+OO    9.74E+OO    3.40E:+Ol u
 'SE         SL-3       383226002   10/12/2015    Cs-137      9.07E+OO    l.OOE+Ol    3.59E+Ol u SE         SL-3       383226002   10/12/2015     Fe-59      2.28E+Ol    2.25E+Ol    7.97E+Ol u SE         SL-3       383226002   10/12/2015     I-131     -2.29E+Ol    l.37E+Ol    3.97E+Ol u SE         SL-3       383226002   10/12/2015     K-40       5.22E+03    4.20E+02    2.73E+02 SE         SL-3       383226002   10/12/2015    La-140     -1.45E+Ol    l.39E+Ol    3.88E+Ol u SE         SL-3       383226002   10/12/2015    Mn-54       2.llE+Ol    1.llE+Ol    3.79E+Ol u}}