Text

Donald C. Cook, Units 1 and 2, Submittal of Annual Radiological Environmental Operating Report
	ML17132A009
Person / Time
Site:	Cook
Issue date:	05/08/2017
From:	Scarpello M K; American Electric Power, Indiana Michigan Power Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	AEP-NRC-2017-24
	Download: ML17132A009 (295)
	v • d • e

m IN DIANA MICHIGAN POWER A unit of American Electric Power May 8, 2017 Docket Nos. 50-315 50-316 U.S. Nuclear Regulatory Commission ATI'N: Document Control Desk Washington, D. C. 20555-0001 Donald C. Cook Nuclear Plant Units 1 and 2 Indiana Michigan Power Cook Nuclear Plant One Cook Place Bridgman, Ml 49106 lndianaMichiganPower.com AEP-NRC-2017-24 10 CFR 50, Appendix I 10 CFR 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, 2016, through December 31, 2016. This letter contains no new regulatory commitments.

Should you have any questions, please contact me at (2S9) 466-2649.

Sincerely, Michael K. Scarpello Manager, Regulatory Affairs DB/mll

Enclosure:

Annual Radiological Environmental Operating Report c: R. J. Ancona -MPSC MDEQ -RMD/RPS NRC Resident Inspector C. D. Pederson -NRC Region Ill J. K. Rankin -Washington D.C. A. J. Williamson

-Ft. Wayne AEP, w/o enclosure Enclosure to AEP-NRC-2017-24 Annual Radiological Environmental Operating Report AREVA Doc. 103-3576-000 Annual Radiological Environmental Operating Report Indiana Michigan Power Company Donald C. Cook Nuclear Plant RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM January 1, 2016-December 31, 2016 Docket N9. 50-315, 50-316 License No. DPR-58, DPR-74 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 TABLE OF CONTENTS 1.0 EXECUTIVE

SUMMARY

.................................................................................................

?

2.0 INTRODUCTION

..................

..........................................................................................

8 2.1 General Plant Site Information

.............................................................................

8 2.2 Program Design ...................................................................................................

8 2.3 Monitoring Zones .................................................................................................

9 2.4 Pathways Monitored

.............................................................................................

9 2.5 Descriptions of Monitoring Pathways ...................................................................

9 2.5.1 Air ..........................................................................................................

10 2.5.2 Surface Water ........................................................................................

10 2.5.3 Groundwater

..........................................................................................

1 O 2.5.4 Drinking Water .......................................................................................

10 2.5.5 Sediment.

...............................................................................................

11 2.5.6 Milk ........................................................................................................

11 2.5.7 Fish ........................................................................................................

11 2.5.8 Food Product. .........................................................................................

11 2.5.9 Broad leaf Vegetation

..............................................................................

11 2.5.10 TLD Monitoring

.......................................................................................

12 2.5.11 Additional Groundwater Sample Analysis (non-ODCM required)

............

12 2.5.12 Additional Groundwater Sample Analysis (NEI Groundwater Protection Initiative (GPI)) ...................................................................................................

12 2.6 Samples Analyzed During 2016 .........................................................................

22 3.0 RADIOLOGICAL DATA

SUMMARY

TABLES ...............................................................

23 4.0 ANALYSIS OF ENVIRONMENTAL RESULTS ...............................................................

52 4.1 Sampling Program Deviations

............................................................................

52 4.2 Comparison of Achieved LLD with Requirements

..............................................

54 4.3 Results Compared Against Reporting Levels .....................................................

54 4.4 Data Analysis by Media Type -Discussion

.......................................................

55 4.4.1 Air Particulate

.........................................................................................

55 4.4.2 Airborne lodine .......................................................................................

58 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 TABLE OF CONTENTS (Continued)

4.4.3 Groundwater

(Well) ................................................................................

58 4.4.4 Drinking Water .......................................................................................

60 4.4.5 Sutiace Water ........................................................................................

61 4.4.6 Sediment.

...............................................................................................

61 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

..............................................................................................................

71 8.0 ERRATA .......................................................................................................................

71 APPENDIX A: SYNOPSIS OF ANALYSIS TECHNIQUES

.....................................................

A-1 APPENDIX B: 2016 LAND USE CENSUS .............................................................................

8-1 APPENDIX C: QUALITY ASSURANCE PROGRAM ..............................................................

C-1 APPENDIX D: 2016 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 2016 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 ...........................................................................................

13 Table 2.2 2016 Radiological Environmental Monitoring Program Sampling Types and Locations

..................................................................................................................................

14 Table 2.3 Environmental Lower Limit of Detection (LLD) Sensitivity Requirements ODCM, Rev. 25, Attachment 3.20 ..........................................................................................................

17 Table 2.4 Reporting Levels for Radioactivity Concentrations in Environmental Samples ODCM Rev. 25, Attachment 3.21 ..............................................................................................

18 Table 2.5 REMP Samples Analyzed in 2016 ...........................................................................

22 Table 3.0 Radionuclides Analyzed and Reported Within a Gamma Spectroscopy Analysis .... 24 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) ......................................................................

25 Table 3.2 2016 Environmental TLD Exposure Rate Measurements

........................................

50 Table 3.3 2016 Environmental TLD Data Summary ................................................................

51 Table 5.1 Cs-137 Concentrations in Fish Samples ..................................................................

65 Table 5.2 Cs-137 Concentrations in Broadleaf Samples .........................................................

66 Table 5.3 Cs-137 Concentrations in Grape Samples ..............................................................

66 Table 5.4 Summary of Off-Site Dose Commitments

................................................................

66 Table 6.1 GEL 2016 Procedure Changes ...............................................................................

69 Table C-1 2016 Inter-Laboratory Radiological Proficiency Testing Results and Acceptance Criteria ....................................................................................................................................

C-9 Table C-2 2016 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 2016 Corrective Action Report Summary ............................................................

C-36 Table C-6 Percentage of Individual Dosimeters That Passed EDC Internal Criteria January -December 2016 ....................................................................................................

C-40 Table C-7 Mean Dosimeter Analyses (N=6) January-December 2016

.............................

C-41 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 TABLE OF CONTENTS (Continued)

Table C-8 Summary of Independent Blind Spike Dosimeter Testing January -December 2016 ...................................

................................................................

C-41 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 LIST OF FIGURES Figure 2.1 Donald C. Cook Nuclear Plant Sampling Locations -1 Mile Radius .....................

19 Figure 2.2 Donald C. Cook Nuclear Plant Sampling Locations

-10 Mile Radius ....................

20 Figure 2.3 Donald C. Cook Nuclear Plant Sampling Locations

-26 Mile Radius ....................

21 Figure 4.1 Mean Annual Gross Beta Concentration in Air Particulate Samples Collected over 10 Years ...................................................................................................................................

57 Figure 4.2 Mean Monthly Gross Beta Concentration in Air Particulate Samples Collected in 2016 .........................................................................................................................................

57 Figure 4.3 Tritium Detected in Groundwater Over the Past 10 Years (Wells W1-W7) .............

59 Figure 4.4 Tritium Detected in Groundwater Over the Past 1 O Years (Wells W-8-W14, and MW-20, MW-21) .......................................................................................................................

59 Figure 4.5 Tritium Detected in Drinking Water Over the Past 10 Years ...................................

60 Figure 4.6 Direct Radiation

-Quarterly TLD Results ...............................................................

63 Figure 4. 7 Direct Radiation, Annual Summary 1 O Years Historical Trend ................................

64 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 2016, 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 gamma 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 cosmogenic radioactivity, ai groundwater dynamics, Q) station related release 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 practices, 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 and naturally-occurring radionuclides.

For a list of naturally occurring radionuclides and radionuclides analyzed, see Table 3.0. Examples include the following:

All four of the lake sediment samples contained Potassium-40 (K-40), three samples contained Thorium-228 (Th-228), and two samples contained Actinium-228 (Ac-228).

11 K-40 was detected in all eight REMP fish samples and trace levels of Cesium-137 C(s-137) were observed in three indicator and four control station samples. Of the three non-REMP sport fish samples, all detected K-40 and two detected trace levels of Cs-137. e Both indicator and control food products samples (grapes) contained K-40 and Beryllium-? (Be-7). One indicator food sample contained trace levels of Cs-137.

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 All samples of broadleaf vegetation contained K-40 and Be-7. Additionally, three of twenty-four indicator samples contained low levels of Cs-137 . ., Five of 144 water samples (drinking, ground, and surface) indicated the presence of K-40. Three samples also detected the presence of Th-228. Tritium was not detected in any of the 84 water samples . ., The quarterly composite of the air particulate samples all contained Be-7. 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 (MPC), 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.

The program was developed to meet the intent of Nuclear Regulatory Commission (NRC) Regulatory Guide 4.1 (Revision 1), "Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants"; NRC Regulatory Guide Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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: Waterborne Pathway: Ingestion Pathway: Direct Radiation:

Air Surface Water Groundwater Drinking Water Sediment Milk (if available)

Fish Food Product (Fruit and Broad leaf Vegetation)

Broad leaf Vegetation (in lieu of Milk and garden census, when necessary)

TLD Monitoring

2.5 Descriptions

of Monitoring Pathways Sample 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 informational samples. A description of the ODCM sampling program follows, Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 airborne radioiodine.

Both types of sample media were collected weekly, and to allow for the decay of radon daughter products, the particulate filters were held at least 100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months before being analyzed for gross-beta radioactivity.

The particulate 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 composite from each sample point. 2.5.3 Groundwater Groundwater samples were collected quarterly from 17 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 performed.

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 Environmental Operating Report 2016 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 2016. 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 2016. The same analysis is performed for the sport fish samples as that performed for the original REMP fish samples. 2.5.8 Food Product Three 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 2016 during the growing season (June -October, when available).

Three samples consisting of greater than 300 grams of media were collected from two different sectors within 5 miles of the plant in the highest deposition factor land sectors with media present, and one sample of similar vegetation grown 10-20 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 2016 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 2016, additional groundwater samples not required by the ODCM were collected for informational purposes.

These samples were collected at several onsite locations in 2016 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 2016, additional groundwater samples not required by the ODCM were collected for informational purposes.

These samples were collected at several onsite locations in 2016 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 Environmental Operating Report 2016 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Table 2.'i Sampling Frequency

& Type of Analysis Based on ODCM, Rev. 25, Attachment 3.19 and 12-THP-6010-RPP-636 Rev. 5 Exposure Pathway Number of Sampling & and/or Sample Locations Collection Type of Analysis Frequency Gamma Exposure-27 Quarterly Direct Radiation

-Quarterly Environmental TLD Continuous Gross Beta and 1-131 -Weekly Airborne 10 sampler -weekly Gamma Isotopic -Quarterly on filter change composite (by location)

Groundwater 17 Quarterly Gamma Isotopic and Tritium -(Well Water) Quarterly Once per calendar Gamma Isotopic -Monthly on Surface Water 2 day composite Tritium -Quarterly on composite Gamma Isotopic, Gross Beta Drinking Water 2 Once per calendar and 1-131 Low Level (LL) -on day 14 day composite.

Tritium -Quarterly on composite Sediment 2 Semiannually Gamma Isotopic Lake Once every 15 Milk 4 days or Monthly if Gamma Isotopic and 1-131 Low (if available) animals are fed Level (LL) -per sample stored feed. Fish (edible portion) 4 2 per year Gamma Isotopic -per sample Fish (edible portion) 2 1 per year Gamma Isotopic -per sample Food Products-2 At time of harvest Gamma Isotopic -per sample Grape Broad leaf Monthly when Gamma Isotopic and 1-131 Low Vegetation

-(in lieu 3 of milk samplinq) available Level (LL) -per sample Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 2.2 2016 Radiological Environmental Monitoring Program Sampling Types and Locations Exposure Pathway Sample Indicator/ (Sample Type Station Control Location Description Designation)

Airborne a. Filter (AP I CF) ONS-1 I 1945 feet @ 18° from Plant axis ONS-2 I 2338 feet @ 48° from Plant axis ONS-3 I 2407 feet @ 90° from Plant axis ONS-4 I 1852 feet @ 118° from Plant axis ONS-5 I 1895 feet @ 189° from Plant axis ONS-6 I 1917 feet@210° 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° from Plant axis W-2 2302 feet @ 63° from Plant axis W-3 3279 feet @ 107° from Plant axis W-4 418 feet @ 301° from Plant axis W-5 404 feet @ 290° from Plant axis W-6 424 feet @ 273° from Plant axis W-7 1895 feet @ 189° from Plant axis W-8 1274 feet@ 54° from Plant axis W-9 1447 feet@ 22° from Plant axis W-10 4216 feet@ 129° from Plant axis W-11 3206 feet @ 153° from Plant axis W-12 2631 feet@ 162° from Plant axis W-13 2152 feet @ 182° from Plant axis W-14 1780 feet @ 164° from Plant axis W-15 725 feet @ 202 ° from Plant axis (MW-12c) W-16 I 2200 feet @ 208 ° from Plant axis (MW-20) W-17 I 2200 feet @ 180 ° from Plant axis (MW-21) b. Drinking (WO) 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 2016 Exposure Pathway Sample Indicator/ (Sample Type Station Control Location Description Designation)

c. Surface (\IVS) SWL-2 I -500 feet S of Plant Centerline

-Site Boundary SWL-3 I -500 feet N of Plant Centerline

-Site Boundary d. Sediment (SE) SL-2 I -500 feet S of Plant Centerline

-Site 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 TRT/SLM* I Trout and salmon within 20 miles of CNP, Lake Michigan PRCH* I Perch within 10 miles of CNP, Lake 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 samples 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 ONS3-V I site boundary, within 5 mi. of the or garden census ] plant, in each of two different sectors ** with 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 2016 Donald C. Cook Nuclear Plant Annual Radiological Environmental Opernting Report 2016 Table 2.2 2016 Radiological Environmental Monitoring Program Sampling Types and Locations (Continued)

Exposure Pathway Sample (Sample Type Location Description Designation)

Station Direct Radiation

a. TLD T-1 1945 feet @ 18° from Plant axis T-2 2338 feet @ 48° from Plant axis T-3 2407 feet @ 90° from Plant axis T-4 1852 feet @ 118° from Plant axis T-5 1895 feet @ 189° from Plant axis T-6 1917 feet@210° from Plant axis T-7 2103 feet @ 36° from Plant axis T-8 2208 feet @ 82° from Plant axis T-9 1368 feet@ 149° from Plant axis T-10 1390 feet@ 127° from Plant axis T-11 1969 feet @ 11° from Plant axis T-12 2292 feet @ 63° 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 2016 Table 2.3 Environmental Lower Limit of Detection (LLD) Sensitivity Requirements ODCM, Rev. 25, Attachment 3.20 Food Prod. Water Milk Air Filter Fish Sediment Analysis (pCi/kg, (pCi/l) (pCi/L) (pCi/m 3) (pCi/kg, (pCi/kg, 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 2016 Table 2.4 Reporting Levels for Radioactivity Concentrations in Environmental Samples ODCM Rev. 25, Attachment 3.21 Food Prod. Water Milk Airborne Fish Analysis (pCi/kg, (pCi/L) (pCi/L) Filter (pCi/kg, 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 2016 x +

EB Figure 2.1 Donald C. Cook Nuclear Plant Sampling Locations

-1 Mile Radius (See Table 2.2 for information on sampling locations) 1 mi l e DC Cook Nuclear Pow r Plant (OCCNPP) AirfTLD LTWINTAKE

0 1 I Mile Dona l d C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 F i gure 2.2 Dona ld C. Coo k N u c l ea r Pla nt Sa m p ling Locat i ons -10 Mi l e Radius (See T ab l e 2.2 fo r i n f o rm atio n o n sam plin g l ocat i ons) Legend A Broadleaf e DC Cook Nuclear Power Plant (DCCNPP)

TLD

Drinking Water X F i sh Lake Michigan See 1-mi l e Rad i us Map for Detail OFS-S x ,r*ii .... OFT-8 * ' .. ., '/t'.,*, l"t'<: , ... , .... y; < < .. \'t" An h 1 Dot,.,..K'1 $l i"l'l'll">\'i ll 11 f.lw n t.'I i """*,. 0 0.5 j 2 ---20-OFT-3

O FT ... * *Yltt11.*

t \\ L Ct ... f hf 3 . : . f. i 4. ' '" 5 *M i les Donald C. C ook Nuclear Plan t Annu a l Radiological Envi r onment a l Op er ating Report 201 6 Figure 2.3 Donald C. Cook Nuclear Plant Sampling Locations

-26 Mile Radius (See Table 2.2 for information on sampling locations)

.& Broadleaf

AirfTLD e DC Cook Nuclear Power Plant (DCCNPP) '" .. .. See 10-rrile Radius Map fo r Details\ .. Lake Michigan / /' ,... / I I { \ ... ; ) I .... , .... .,. .... I.I** . ... ...... , ... ....... lfn1.o ... ..--/ ... .:: ..... p ?-""* ... ., I :::::. ,\..J .... 2.5 /. "'*f!* ... 5 ....... , .. ... t1rh.-..l*1* ... _ .. , ! '----* (_ ........ . --, (OL'00 -.* \ . Jt ** fl.At.""*

..... , ,, ..... ... 1 s-... 11 ........ , '"'" 'Cllt>,1 1 ".... l ... ..... i .i. i / ... 1** ' I v J . ... *. t .. . . I L ... f l ..* "*"" .... i ** ,'I!:' ... ' .. '" *' . . . . J , ..... r. .. , ... ...., . " " . . """"' ... ., I *" ..... ,._......,.

.. ... "II (\'> ./ ... , ......... I

1 ..... r.._ .. \llCltr G\N N I < * , ...... ,,. .... ... ,.... .:; -...... .... ,'\-. .. ---- ' .. ; Sou lh E<M SBN l!i; .. / 1 0 *.. ,, 15 1 1 If Ii 2 0 25 3 0 Miles Dona l d C. Cook Nuclear Plant Annua l Rad i olog i ca l Environmenta l Operating Report 2016 2.6 Samples Analyzed During 2016 Tab l e 2.5 be l ow summarizes the number of samples of each type ana l yzed during the 2016 reporting period and the number of analyses by station type for each media. A more deta il ed breakdown of the various analyses performed is provided in the data summary tables in Section 3, Table 3.1. Table 2.5 REMP Samp l es A n a l yzed in 2016 Sa m ple Type Nu m ber o f REMP Samp l es Tota l Indi ca t or Co n t r o l Gamma Exposure 108 92 16 Environmental TLD Air Particulate 519 311 208 C h ar co a l Filte r 519 31 1 2 08 Groundwate r 68 68 0 Surface Water 24 24 0 D ri nking Water 52 26 26 Se di ment (Lake) 4 4 0 F o od Products 3 2 1 (grapes) Vegetation 28 24 4 (broad l eaf) Milk* 0 0 0 Fish 8 4 4 Total All Type s 1 , 333 866 467

No milk sampling locations were ava i lable. Program is currently suspended.

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 3.0 RADIOLOGICAL DATA

SUMMARY

TABLES This section summarizes the analytical results of the environmental samples that were collected during 2016. 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 2016, 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 specified in Table 2.3. The absence of a value in this column indicates that no LLD is specified in the ODCM for that radionuclide 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 mean concentration during 2016, 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 radionuclide, the following are given: The mean value of all concentrations including negative values and values that were not considered "detectable".

e The lowest and highest concentration.

Ill 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 measurement 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 are found in Table 3.0.

Donald C. Cook Nuclear Plant Annua! Radiological Environmental Operating Report 2016 Table 3.0 Radionuclides Analyzed and Reported Within a Gamma Spectroscopy Analysis Nuclide Symbol Ac-228 Antimony-124 Sb-124 Antimony-125 Sb-125 Barium-140 Ba-140 Beryllium-?*

Be-7 Cerium-141 Ce-141 Cerium-144 Ce-144 Cesium-134 Cs-134 Cesium-137 Cs-137 Chromium-51 Cr-51 Cobalt-57 Co-57 Cobalt-58 Co-58 Cobalt-60 Co-60 lodine-131 1-131 lron-59 Fe-59 Lanthanum-140 La-140 Manganese-54 Mn-54 Niobium-95 Nb-95 Potassium-40*

K-40 Ruthenium-103 Ru-103 Ruthenium-106 Ru-106 Selenium-75 Se-75 Silver-108m Ag-108m Silver-11 Om Ag-110m Thorium-228*

Th-228 Tritium H-3 Zinc-65 Zn-65 Zirconium-95 Zr-95 *Naturally occurring GEL Laboratories has been analyzing CNP's environmental samples since June 2010, when the AREVA Environmental Laboratory (ELAB) discontinued operations.

During this 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 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

BETA (519) 0.01 2.4E -2 ONS-5 2.5E -2 2.4E -2 (0) 1. 2 -4. 6) E -2 1.2 -4.4)E -2 1.2 -4.6)E -2 . (311/ 311) (52/ 52) (208/ 208) Be-7 (40) 1. 3E -1 DOW 1.4E -1 1.3E -1 (0) 9.6 -18.l)E -2 9.5 -17.7)E -2 9.4 -18.l)E -2 (24/ 24) (4/ 4) (16/ 16) K-40 (40) 1. OE -3 ONS-5 2.4E -3 8.6E -4 (0) -3.5 -6.8)E 6.6 -45.7)E 2.8 -6.9)E -3 (0/ 24) (0/ 4) (0/ 16) Cr-51 (40) -8.3E -4 COL 6.0E 9.lE -4 (0) -1.3 -1.2)E -2 1.5 -173.0)E 1.4 -1.7)E -2 (0/ 24) (0/ 4) (0/ 16) Mn-54 (40) 1. 2E -5 COL 1.lE -4 5.9E -5 (0) -2.7 -1.7)E 2.6 -25.3)E 3.1 -3.3)E -4 (0/ 24) (0/ 4) (0/ 16) Co-57 (40) O.OE 0 DOW 5.2E -5 1. 4E -5 (0) -1.1 -1.8)E 2.7 -14.2)E 1.4 -1.5)E -4 (0/ 24) (0/ 4) (0/ 16) Co-58 (40) -6.2E -5 ONS-5 4.9E 1. 2E -4 (0) -4.7 -4.2)E 2.1 -4.2)E 5.4 -2.3)E -4 (0/ 24) (0/ 4) (0/ 16) Fe-59 (40) 1. 6E -5 NBF 7.3E 1.3E -4 (0) -1. 6 -1. 4) E -3 1. 8 -12.4)E 2.2 -1.2)E -3 (0/ 24) (0/ 4) (0/ 16) Co-60 (40) 1. lE -5 COL 1. 7E -4 7.3E -5 (0) -2.4 -2.l)E 1.3 -8.6)E 1. 7 -8. 6)E -4 (0/ 24) (0/ 4) (0/ 16) Zn-65 (40) -1. 2E -4 ONS-5 1.3E 4.4E -5 (0) -1.1 -0.5)E 1.2 -4.9)E 7.0 -7.4)E -4 (0/ 24) (0/ 4) (0/ 16) Se-75 (40) 2.6E -5 SBN 2.3E -4 1. lE -4 (0) -4.6 -3.4)E -4 3.2 -41.5)E 3.2 -4.2)E -4 (0/ 24) (0/ 4) (0/ 16) Nb-95 (40) 4.7E -5 ONS-2 2.2E -4 O.OE 0 (0) -8.3 -5.8)E -4 9.1 -39.7)E 4.0 -4.0)E -4 (0/ 24) (0/ 4) (0/ 16)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Zr-95 (40) 5.2E -5 ONS-3 5.4E 3.8E -5 (0) -7.9 -16.9)E 2.4 -16.9)E 6.9 -8.4)E -4 (0/ 24) (0/ 4) (0/ 16) Ru-103 (40) -1.4E -4 SBN 3.lE -4 1. 2E -4 (0) -1.6 -0.6)E 5.4 -104.0)E 6.0 -10.4)E -4 (0/ 24) (0/ 4) (0/ 16) Ru-106 (40) -3.3E -4 NSF 1. OE -3 1. 3E -4 (0) -1. 7 -2.4)E 1.1 -3.l)E 3.0 -3.l)E -3 (0/ 24) (0/ 4) (0/ 16) Ag-108m (40) 1. 2E -5 ONS*3 6.4E 5.2E -5 (0) -1.6 -2.9)E -4 2.2 -15.2)E 2.8 -1.2)E -4 (0/ 24) (0/ 4) (0/ 16) Ag-110m (40) -6.2E -5 ONS*3 8.SE 5.8E -5 (0) -4.1 -6.l)E 1.6 -6.l)E 5.0 -3.2)E -4 (0/ 24) (0/ 4) (0/ 16) Sb-124 (40) -1. 7E -4 SBN 2.2E 3.4E -5 (0) -1.4 -0.8)E 3.3 -5.4)E 1. 5 -0. 6) E -3 (0/ 24) (0/ 4) (0/ 16) Sb-125 (40) 2.4E -5 ONS-3 1.SE -4 4.0E -5 (0) -5.5 -6.l)E 1.3 -27 .8)E 3.7 -5.S)E -4 (0/ 24) (0/ 4) (0/ 16) 1-131 (40) -2.lE -2 SBN 3.9E -1 1. 3E -1 (0) -8.7 -3.l)E 1.6 -156.0)E 5.6 -15.6)E -1 (0/ 24) (0/ 4) (0/ 16) Cs-134 (40) 0.06 -1.2E -5 ONS*1 1.2E -4 O.OE 0 (0) -3.5 -3.l)E 1.3 -31.2)E 4.7 -2.3)E -4 (0/ 24) (0/ 4) (0/ 16) Cs-137 (40) 0.06 2.0E -5 SBN 1.3E 2.lE -5 (0) -1.8 -2.S)E 4.5 -41.7)E 5.3 -4.2)E -4 (0/ 24) (0/ 4) (0/ 16) Ba-140 (40) 3.8E -3 ONS-3 1. 6E -2 2.6E -3 (0) -5.1 -10.3)E -2 1.9 -51.8)E 1.2 -0.7)E -1 (0/ 24) (0/ 4) (0/ 16) La-140 (40) -3.7E -3 ONS*S 1.0E 1. SE -3 (0) -3.8 -3.9)E 6.9 -28.2)E 3.5 -3.S)E -2 (0/ 24) (0/ 4) (0/ 16)

Donald C. Cook Nuclear Plant Annual Radiological Envimnmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Ce-141 (40) (0) Ce-144 (40) (0) Ac-228 (40)

(0) Th-228 (40) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Air Particulates

{AP) UNITS: pCi/cubic meter Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected** -l.3E -4 SBN 6.8E 1. 6 -1.l)E 6.4 -27.l)E -4 (0/ 24) (0/ 4) -7.4E -5 SBN 8.lE 1. 6 -1.0)E -3 5.0 -16.l)E -4 (0/ 24) (0/ 4) -3.0E -5 ONS-1 3.2E 1.0 -1. 7)E 1.5 -8.l)E -4 (0/ 24) (0/ 4) l.2E -4 COL 3.3E 4.1 -4.4)E -4 1.2 -7.2)E -4 (0/ 24) (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 is set to O.OE 0 for calculated mean values with exponent less than E-06. Control Stations Mean*** Range No. Detected**

1.2E 1.1 -2.7)E -3 (0/ 16) 9.2E 1.1 -1.6)E -3 (0/ 16) -1.2E 5.0 -5.8)E -4 (0/ 16) 2.2E 1.2 -8.3)E -4 (0/ 16)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Non-Routine*

1-131 (519) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Charcoal Cartridge (CF) UNITS: pCi/cubic meter Indicator Stations Station With Highest Mean Mean*** Required Range Station Mean*** Range LLD No. Detected**

0.07 5.9E 1. 7 -1. 7) E -2 (0/ 311) ONS-2 No. Detected**

1.SE 1.3 -l.4)E -2 (0/ 52) *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. Control Stations Mean*** Range No. Detected**

1.SE 1. 6 -1.4)E -2 (0/ 208)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Be-7 (8) -9.lE 0 ONS-N 2.lE 0 -2.2E 1 (0) -3.5 -0.4)E 1 -2.9 -43.9)E 3.1 --0.6)E 1 (0/ 4) (0/ 2) (0/ 4) K-40 (8) 2.9E 3 OFS-N 3_5E 3 3.2E 3 (0) 2.1 -3.3)E 3 3.1 -3.9)E 3 2.8 -3.9)E 3 (4/ 4) (2/ 2) (4/ 4) Cr-51 (S) 1. 6E 0 ONS*S 2.8E 0 -5.2E 0 (0) -1.0 -1.l)E 1 -1.8 -7.5)E 0 -2.0 -O.l)E 1 (0/ 4) (0/ 2) (0/ 4) Mn-54 (8) 130 -7.7E -1 OFS-S 5.4E 5.0E -1 (0) -3.1 -1.7)E 0 3.7 -7.l)E 2.2 -0.7)E 0 (0/ 4) (0/ 2) (0/ 4) Co-57 (8) 7.8E -3 OFS-S 1.9E 0 8.3E -1 (0) -9.3 -13.9)E -1 4.0 -33.0)E 4.8 -33.0)E -1 (0/ 4) (0/ 2) (0/ 4) Co-58 (8) 130 -1. SE -1 OFS-N 1.2E 0 3.lE -1 (0) -2.2 -1.9)E 0 -5.9 -30.l)E 2.7 -3.0)E 0 (0/ 4) (0/ 2) (0/ 4) Fe-59 (8) 260 l.5E 0 ONS-S 3.0E 0 -2.6E 0 (0) -8.8 -68.l)E 8.6 -68.l)E 8.2 -O.l)E 0 (0/ 4) (0/ 2) (0/ 4) Co-60 (8) 130 6.3E -1 ONS-S l.lE 0 4.2E -1 (0) -7.0 -11.3)E -1 9.9 -11.3)E 3.1 -3.0)E 0 (0/ 4) (0/ 2) (0/ 4) Zn-65 (8) 260 -1.4E 0 OFS-S 4.8E 0 2.4E -1 (0) -3.6 -0.1)E 0 4.1 -5.6)E 0 -6.7 -5.6)E 0 (0/ 4) (0/ 2) (0/ 4) Se-75 (8) -7.9E -1 ONS-N -4.9E 7.8E -1 (0) -3.3 -1.1)E 0 -1.9 -1.0)E 0 -4.0 -2.8)E 0 (0/ 4) (0/ 2) (0/ 4) Nb-95 (8) -3.3E -1 OFS-N 2.0E 0 1.4E 0 (0) -2.4 -1.2)E 0 1.7 -2.3)E 0 -1.6 -3.1)E 0 (0/ 4) (0/ 2) (0/ 4) Zr-95 (8) -8.BE -1 OFS-N 3.2E 0 7.1E -1 (0) -4.5 -2.5)E 0 1.1 -62.7)E 3.1 -6.3)E 0 (0/ 4) (0/ 2) (0/ 4)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Ru-103 (8) -8.8E -1 OFS*N 1.3E 0 7.5E -1 (0) -2.0 -0.7)E 0 6.8 -19.6)E 1.3 -2.0)E 0 (0/ 4) (0/ 2) (0/ 4) Ru-106 (8) -4.5E 0 ONS-N -2.2E 0 -1.2E 1 (0) -8.6 --0.3)E 0 -4.0 --0.3)E 0 -3.7 -0.5)E 1 (0/ 4) (0/ 2) (0/ 4) Ag-108m (8) -8.0E -1 OFS*S -1.2E 3.0E -1 (0) -1. 7 --0.2)E 0 -2.5 -O.l)E 1.3 -0.3)E 0 (0/ 4) (0/ 2) (0/ 4) Ag-110m (8) -1. 9E 0 OFS*N 6.5E 0 3.lE 0 (0) -7.7 -3.5)E 0 -3.0 -15.9)E 0 -3.0 -15.9)E 0 (0/ 4) (0/ 2) (0/ 4) Sb-124 (8) -7.4E -2 ONS*N 1.6E 0 -3.3E -1 (0) -2.7 -3.2)E 0 -8.8 -31800.0)E 2.2 -0.5)E 0 (0/ 4) (0/ 2) (0/ 4) Sb-125 (8) -3.5E 0 OFS*S -2.0E 0 -2.lE 0 (0) -8.5 -1.3)E 0 -2.5 --1.5)E 0 -3.0 --1.3)E 0 (0/ 4) (0/ 2) (0/ 4) 1-131 (8) -2.0E 0 OFS-N 2.4E 0 1. 2E -1 (0) -4.6 --0.2)E 0 2.2 -2.6)E 0 -6.4 -2.6)E 0 (0/ 4) (0/ 2) (0/ 4) Cs-134 (8) 130 9.6E -1 OFS*S 2.0E 0 6.7E -1 (0) -5.7 -25.4)E 4.4 -44.6)E 1.4 -4.5)E 0 (0/ 4) (0/ 2) (0/ 4) Cs-137 (8) 150 1.2E 1 OFS*N 2.lE 1 1.9E 1 (0) -7.2 -299.0)E -1 1.1 -3.0)E 1 1.1 -3.0)E 1 (3/ 4) (2/ 2) (4/ 4) Ba-140 (8) -3.lE 0 ONS-N -8.5E 2.4E 0 (0) -1. 2 -0. 6) E 1 -7.7 -6.l)E 0 -5.6 -2.7)E 0 (0/ 4) (0/ 2) (0/ 4) La-140 (8) -1. 6E 0 OFS*N l.OE 0 -8.6E -1 (0) -4.8 -0.7)E 0 -2.3 -22.2)E 4.l -2.2)E 0 (0/ 4) (0/ 2) (0/ 4) Ce-141 (8) 6.2E -1 OFS*S 1.2E 0 -1.2E 0 (0) -3.3 -4.7)E 0 8.5 -15.8)E 5.9 -1. 6)E 0 (0/ 4) (0/ 2) (0/ 4)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Ce-144 (8) (0) Ac-228 (8) (0) Th-228 (8) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Fish (FH) UNITS: pCi/kg Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

l.3E 1 ONS-S 1. 6E 1 1.3 -23.4)E 0 8.7 -23.4)E 0 (0/ 4) (0/ 2) -5.6E 0 OFS-S 7.3E 0 -7.2 --4.6)E 0 9.1 -136.0)E (0/ 4) (0/ 2) -l.8E 0 OFS-N 6.7E 0 -9.3 -5.4)E 0 5.5 -8.0)E 0 (0/ 4) (0/ 2) -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 is set to O.OE 0 for calculated mean values with exponent less than E-06. Control Stations Mean*** Range No. Detected**

-6.8E 0 -2.0 -1.2)E 1 (0/ 4) -5.5E 0 -2.4 -1.4)E 1 (0/ 4) 6.lE 0 1.7 -9.2)E 0 (0/ 4)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Be-7 (4) (0) K-40 (4) (0) Cr-51 (4) (0) Mn-54 (4) (0) Co-57 (4) (0) Co-58 (4) (0) Fe-59 (4)

(0) Co-60 (4)

(0) Zn-65 (4) (0) Se-75 (4) (0) Nb-95 (4) (0) Zr-95 (4) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Sediment (SE) UNITS: pCi/kg dry Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

-2.7E 1 SL*2 -5.5E 0 -6.7 -3.4)E 1 -4.5 -3.4)E 1 (0/ 4) (0/ 2) 5.BE 3 SL-3 5.9E 3 5.4 -6.5)E 3 5.4 -6.5)E 3 (4/ 4) (2/ 2) 8.3E 1 SL-2 2.7E 2 -1.4 -6.B)E 2 -1.4 -6.B)E 2 (0/ 4) (0/ 2) 1.1E 0 SL-2 4.5E 0 -2.6 -9.2)E 0 -1.5 -91. 9)E -1 (0/ 4) (0/ 2) -7.3E -1 SL-2 6.1E 3.3 -2.3)E 0 -1.1 -2.3)E 0 (0/ 4) (0/ 2) -4.6E 0 SL-3 8.2E 1.2 -O.O)E 1 -3.9 -20.3)E -2 (0/ 4) (0/ 2) 3.6E 0 SL-2 2.5E 1 -3.9 -2.B)E 1 2.3 -2.B)E 1 (0/ 4) (0/ 2) 1.2E -1 SL-2 5.BE 0 -7.7 -7.l)E 0 4.6 -7.l)E 0 (0/ 4) (0/ 2) -4.5E -1 SL-3 7.4E 0 -1.2 -1.3)E 1 1. 7 -13.2)E 0 (0/ 4) (0/ 2) 2.BE 0 SL-3 6.0E 0 -2.7 -6.2)E 0 5.9 -6.2)E 0 (0/ 4) (0/ 2) 2.7E 0 SL-2 2.BE 0 -4.8 -9.9)E 0 0.0 -5.6)E 0 (0/ 4) (0/ 2) -3.4E -1 SL-3 6.9E 0 -1.4 -1.B)E 1 -4.6 -18.4)E 0 (0/ 4) (0/ 2) Control Stations Mean*** Range No. Detected**

NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA NO DATA Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Ru-103 (4) -2.8E 0 SL-2 1.7E 0 NO DATA (0) -1.2 -0.4)E 1 -3.4 -37.8)E -1 (0/ 4) (0/ 2) Ru-106 (4) 7.7E 0 SL-3 9.6E 0 NO DATA (0) -1.8 -2.9)E 1 -6.1 -25.3)E 0 (0/ 4) (0/ 2) Ag-108m (4) -9.2E -1 SL-3 5.0E 0 NO DATA (0) -1.1 -0.5)E 1 4.9 -5.l)E 0 (0/ 4) (0/ 2) Ag-110m (4) 5.7E 0 SL-2 2.4E 1 NO DATA (0) -2.1 -5.9)E 1 -1.2 -5.9)E 1 (0/ 4) (0/ 2) Sb-124 (4) 1.8E 1 SL-2 2.6E 1 NO DATA (0) 8.4 -36.5)E 0 1.6 -3.7)E 1 (0/ 4) (0/ 2) Sb-125 (4) -6.3E 0 SL-2 -6.2E 0 NO DATA (0) -1.1 --0.2)E 1 -8.0 --4.5)E 0 (0/ 4) (0/ 2) 1-131 (4) 2.lE 1 SL-2 3.5E 1 NO DATA (0) -6.1 -13.l)E 1 -6.1 -13.l)E 1 (0/ 4) (0/ 2) Cs-134 (4) 150 1.4E 1 SL-2 1.8E 1 NO DATA (0) -4.0 -22.6)E 0 1.7 -1.9)E 1 (0/ 4) (0/ 2) Cs-137 (4) 180 5.8E 0 SL-2 6.8E 0 NO DATA (0) -2.8 -16.5)E 0 -2.8 -16.5)E 0 (0/ 4) (0/ 2) Ba-140 (4) -5.3E 1 SL-2 -5.3E 1 NO DATA (0) -8.8 --1.9)E 1 -8.6 --1.9)E 1 (0/ 4) (0/ 2) La-140 (4) 5.8E 0 SL-3 3.0E 1 NO DATA (0) -4.6 -3.4)E 1 2.6 -3.4)E 1 (0/ 4) (0/ 2) Ce-141 (4) 2.2E 0 SL-2 1.2E 1 NO DATA (0) -1.4 -3.6)E 1 -1.2 -3.6)E 1 (0/ 4) (0/ 2)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Ce-144 (4) (0) Ac-228 (4) (0) Th-228 (4) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Sediment (SE) UNITS: pCi/kg dry Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

-1.8E 1 SL-3 1.8E 1 -7_7 -2.7)E 1 8.5 -27.3)E 0 (0/ 4) (0/ 2) 2.2E 2 SL-3 2.4E 2 1.5 -3.3)E 2 1.5 -3.3)E 2 (2/ 4) (2/ 2) 1.5E 2 SL-3 1.8E 2 7.8 -26.4)E 1 9.8 -26_4)E 1 (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 is set to O.OE O for calculated mean values with exponent less than E-06. Control Stations Mean*** Range No. Detected**

NO DATA NO DATA NO DATA Donald C. Cook Nuclear Plant Annua! Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary

Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Be-7 (3) 1. 9E 2 ONS-G 1.9E 2 7.5E 1 (0) 1.8 -1.9)E 2 1.8 -1.9)E 2 (2/ 2) (2/ 2) (1/ 1) K-40 (3) 3.3E 3 OFS-G 4.5E 3 4.5E 3 (0) 2.2 -4.5)E 3 (2/ 2) (1/ 1) (1/ 1) Cr-51 (3) -l.3E 1 ONS-G -1.3E 1 -2.2E 1 (0) -1.8 --0.8)E 1 -1.8 --0.8)E 1 (0/ 2) (0/ 2) (0/ 1) Mn-54 (3) -2.4E 0 OFS-G 8.5E -1 8.5E -1 (0) -3.1 --l.8)E 0 (0/ 2) (0/ 1) (0/ 1) Co-57 (3) 2.0E 0 ONS-G 2.0E 0 1.lE 0 (0) 1.5 -2.6)E 0 1.5 -2.6)E 0 (0/ 2) (0/ 2) (0/ 1) Co-58 (3) -8.lE -1 OFS-G 1.8E 0 1.8E 0 (0) -2.3 -0.7)E 0 (0/ 2) (0/ 1) (0/ 1) Fe-59 (3) -2.8E 0 OFS-G -2.5E 0 -2.5E 0 (0) -7.0 -1.4)E 0 (0/ 2) (0/ 1) (0/ 1) Co-60 (3) -1. 6E -1 OFS-G 4.4E -1 4.4E -1 (0) -1.8 -1.5)E 0 (0/ 2) (0/ 1) (0/ 1) Zn-65 (3) l.5E 0 OFS-G 2.4E 0 2.4E 0 (0) -2.6 -5.5)E 0 (0/ 2) (0/ 1) (0/ 1) Se-75 (3) 6.8E -1 OFS-G 5.lE 0 5.lE 0 (0) -2.7 -4.l)E 0 (0/ 2) (0/ 1) (0/ 1) Nb-95 (3) 8.0E -1 ONS-G 8.0E -1 1.4E -1 (0) 3.4 -12.7)E -1 3.4 -12.7)E -1 (0/ 2) (0/ 2) (0/ 1) Zr-95 (3) -2.2E 0 OFS-G -4.lE 4.lE -1 (0) -3.0 --1.3)E 0 (0/ 2) (0/ 1) (0/ 1)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Food Products (TF) 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**

Ru-103 (3) 1.4E 0 ONS-G 1.4E 0 -1.4E 0 (0) 6.1 -21.2)E -1 6.1 -21.2)E -1 (0/ 2) (0/ 2) (0/ 1) Ru-106 (3) 9.0E 0 ONS-G 9.0E 0 -1.0E 1 (0) -1.4 -3.2)E 1 -1.4 -3.2)E 1 (0/ 2) (0/ 2) (0/ 1) Ag-108m (3) -4.3E -2 ONS-G -4.3E 2.7E -1 (0) -6.9 -6.0)E 6.9 -6.0)E -1 (0/ 2) (0/ 2) (0/ 1) Ag-110m (3) 2.BE 0 ONS-G 2.BE 0 -6.9E -1 (0) -1.4 -6.9)E 0 -1. 4 -6.9)E 0 (0/ 2) (0/ 2) (0/ 1) Sb-124 (3) -1.4E 0 OFS*G -6. 7E 6.7E -1 (0) -3.5 -0.7)E 0 (0/ 2) (0/ 1) (0/ 1) Sb-125 (3) -6.7E 0 OFS-G 7.3E -1 7.3E -1 (0) -1.3 -O.O)E 1 (0/ 2) (0/ 1) (0/ 1) 1-131 (3) 60 1.6E 0 ONS-G 1. 6E 0 1.6E 0 (0) -1.5 -33.7)E 1.5 -33.7)E -1 (0/ 2) (0/ 2) (0/ 1) Cs-134 (3) 60 -1. BE 0 OFS-G 7.lE -1 7.1E -1 (0) -3.5 --0.2)E 0 (0/ 2) (0/ 1) (0/ 1) Cs-137 (3) 60 3.1E 1 ONS-G 3.1E 1 -3.9E -1 (0) 1.6 -60.2)E 0 1.6 -60.2)E 0 (1/ 2) (1/ 2) (0/ 1) Ba-140 (3) -1. 5E 0 ONS-G -1.5E 0 -2.7E 0 (0) -1.3 -1.0)E 1 -1.3 -1.0)E 1 (0/ 2) (0/ 2) (0/ 1) La-140 (3) -2.1E 0 OFS-G 1.4E 0 1.4E 0 (0) -5. 7 -1.5)E 0 (0/ 2) (0/ 1) (0/ 1) Ce-141 (3) -1. OE -1 ONS-G -1.0E 2.9E 0 (0) -6.5 -4.5)E 6.5 -4.5)E -1 (0/ 2) (0/ 2) (0/ 1)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Ce-144 (3) (0) Ac-228 (3) (0) Th-228 (3) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Food Products !TF) UNITS: pCi/kg wet Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

-5.7E 0 OFS*G 2.8E 9.0 --2.4)E 0 (0/ 2) (0/ 1) -3.4E 1 OFS*G -2.4E 0 -4.7 --2.l)E 1 (0/ 2) (0/ 1) -2.7E 0 OFS*G -2.2E 0 -6.7 -l.3)E 0 (0/ 2) (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 is set to O.OE 0 for calculated mean values with exponent less than E-06. Control Stations Mean*** Range No. Detected**

2.8E -2 (0/ 1) -2.4E 0 (0/ 1) -2.2E 0 (0/ 1)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Be-7 (28) 1.6E 3 ONS2-V 2.0E 3 1.lE 3 (0) 4.1 -33.0)E 2 7.0 -33.0)E 2 4.4 -20.5)E 2 (24/ 24) (6/ 6) (4/ 4) K-40 (28) 2.8E 3 ONS1-V 2.9E 3 2.8E 3 (0) 1.0 -6.l)E 3 1.4 -3.9)E 3 2.3 -3.3)E 3 (24/ 24) (6/ 6) (4/ 4) Cr-51 (28) -2.3E 0 ONS1-V 1.8E 1 -l.3E 1 (0) -6.9 -11.l)E 1 -4.6 -11.l)E 1 -4.2 -1.l)E 1 (0/ 24) (0/ 6) (0/ 4) Mn-54 (28) 1. 5E -2 OFS1-V 1.7E 0 -2.2E 0 (0) -6.9 -4.2)E 0 -2.9 -36.5)E 7.8 -3.7)E 0 (0/ 24) (0/ 2) (0/ 4) Co-57 (28) -2.9E -1 OFS1-V 5.2E 9.0E -1 (0) -1.0 -0.5)E 1 -2.9 -3.9)E 0 -5.0 -3.9)E 0 (0/ 24) (0/ 2) (0/ 4) Co-58 (28) -4.3E -1 OFS2-V 2.4E 0 2.lE 0 (0) -9.5 -9.6)E 0 -3.5 -50.7)E 3.5 -50.7)E -1 (0/ 24) (0/ 2) (0/ 4) Fe-59 (28) 1.6E 0 OFS2-V 7.0E 0 6.2E 0 (0) -9.1 -44.7)E 0 4.9 -135.0)E 6.2 -17.2)E 0 (0/ 24) (0/ 2) (0/ 4) Co-60 (28) -8.5E -1 OFS2-V 2.3E 0 2.2E 0 (0) -1. 6 -1.l)E 1 1.9 -2.7)E 0 -1.9 -6.3)E 0 (0/ 24) (0/ 2) (0/ 4) Zn-65 (28) -3.4E 0 OFS1-V 3.4E 0 -9.4E -1 (0) -4.1 -1.9)E 1 -2.0 -8.8)E 0 -8.5 -8.8)E 0 (0/ 24) (0/ 2) (0/ 4) Se-75 (28) -1.0E -1 OFS2-V 1.5E 0 5.5E -1 (0) -6.8 -10.7)E 0 3.2 -26.S)E 6.4 -26.5)E -1 (0/ 24) (0/ 2) (0/ 4) Nb-95 (28) 5.9E -1 ONS1-V 1.5E 0 -1. 6E 0 (0) -1.4 -0.8)E 1 -3.9 -5.5)E 0 -6.9 -4.7)E 0 (0/ 24) (0/ 6) (0/ 4) Zr-95 (28) 3.lE -3 ONS1-V 3.2E 0 9.5E -2 (0) -1.4 -1.3)E 1 -1.4 -1.2)E 1 -2.2 -3.4)E 0 (0/ 24) (0/ 6) (0/ 4)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Ru-103 (28) -9.2E -1 ONS2-V -8.4E 2.8E 0 (0) -6.5 -3.2)E 0 -3.7 -3.2)E 0 -4.9 --0.l)E 0 (0/ 24) (0/ 6) (0/ 4) Ru-106 (28) -7.lE 0 OFS2-V 6.9E 0 -7.5E -2 (0) -4.7 -3.8)E 1 -2.3 -3.7)E 1 -3.2 -3.7)E 1 (0/ 24) (0/ 2) (0/ 4) Ag-108m (28) -9.5E -1 OFS1-V l.2E 0 -5.3E -2 (0) -6.2 -4.0)E 0 1.2 -1.3)E 0 -1.9 -l.3)E 0 (0/ 24) (0/ 2) (0/ 4) Ag-110m (28) -1.lE 0 ONS1-V 1.lE 0 -6.3E -1 (0) -7.9 -7.8)E 0 -6.0 -7.8)E 0 -4.5 -3.2)E 0 (0/ 24) (0/ 6) (0/ 4) Sb-124 (28) 7.8E -1 OFS2-V 8.4E 0 6.5E 0 (0) -1.6 -4.3)E 1 2.4 -14.3)E 0 -5.4 -14.6)E 0 (0/ 24) (0/ 2) (0/ 4) Sb-125 (28) 9.7E -2 OFS1-V 9.7E 0 2.2E 0 (0) -1.2 -l.8)E 1 9.2 -1940.0)E 7.1 -19.4)E 0 (0/ 24) (0/ 2) (0/ 4) 1-131 (28) 60 -1.lE 0 ONS2-V l.3E 0 1. 4E -2 (0) -1.3 -1.0)E 1 -3.5 -9.7)E 0 -3.8 -3.5)E 0 (0/ 24) (0/ 6) (0/ 4) Cs-134 (28) 60 1.3E 0 OFS1-V 3.5E 0 1.7E 0 (0) -9.8 -7.8)E 0 1.3 -5.7)E 0 -1.8 -5. 7)E 0 (0/ 24) (0/ 2) (0/ 4) Cs-137 (28) 60 9.0E 0 ONS2-V 2.5E 1 7.2E -1 (0) -1.1 -6.2)E 1 -6. 7 -621.0)E 3.3 -3.2)E 0 (3/ 24) (3/ 6) (0/ 4) Ba-140 (28) 1.lE 1 ONS3-V 1.4E 1 -1.5E 0 (0) -2.3 -5.5)E 1 -2.3 -5.5)E 1 -1.9 -1.8)E 1 (0/ 24) (0/ 12) (0/ 4) La-140 (28) -2.6E 0 OFS2-V 1.8E 4.7E 0 (0) -1.4 -3.l)E 1 -2.2 -2.6)E 0 -1.2 -0.3)E 1 (0/ 24) (0/ 2) (0/ 4) Ce-141 (28) -1. 2E 0 OFS2-V 1.2E 1 2.2E 0 (0) -2.4 -1.2)E 1 8.2 -16.6)E 0 -1.1 -1. 7)E 1 (0/ 24) (0/ 2) (0/ 4)

Donald C. Cook Nuclear Plant Annual 'Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Ce-144 (28) (0) Ac-228 (28) (0) Th-228 (28) (0) ' Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Vegetation (TV) UNITS: pCi/kg wet Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

-6.7E 0 OFS2-V 2.0E 1 -5.0 -2.3)E 1 1.4 -2.6)E 1 (0/ 24) (0/ 2) 1. 9E 1 OFS1-V 6.3E 1 -2.7 -9.5)E 1 4.9 -7. 6)E 1 (0/ 24) (0/ 2) 5.4E -1 ONS3-V 1. 7E 0 -2.7 -1. 6)E 1 -2.7 -1.6)E 1 (0/ 24) (0/ 12)

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 O for calculated mean values with exponent less than E-06. Control Stations Mean*** Range No. Detected**

5.0E 0 -1.2 -2.6)E 1 (0/ 4) 3.3E 1 7.2 -759.0)E -1 (0/ 4) -3.6E 0 -1.6 -O.B)E 1 (0/ 4)

Donald C. Cook Nuclear Plant Annuai Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

BETA (52) 4 1.3E 0 LTW l.3E 0 1.lE 0 (0) -7.2 -31.7)E 7 .2 -31. 7)E 1.8 -3.6)E 0 (0/ 26) (0/ 26) (0/ 26) H-3 (8) 2000 -1.5E 1 STJ 2.0E 2 2.0E 2 (0) -5.7 -2.4)E 2 -5.5 -5.9)E 2 -5.5 -5.9)E 2 (0/ 4) (0/ 4) (0/ 4) Be-7 (52) 2.8E 0 LTW 2.8E 0 1.4E 0 (0) -2.2 -3.2)E 1 -2.2 -3.2)E 1 -2.8 -2.3)E 1 (0/ 26) (0/ 26) (0/ 26) K-40 (52) 3.6E 0 LTW 3.6E 0 -2.0E 0 (0) -3.7 -3.6)E 1 -3.7 -3.6)E 1 -3.9 -6.4)E 1 (0/ 26) (0/ 26) (0/ 26) Cr-51 (52) 2.BE 0 LTW 2.8E 0 8.8E -1 (0) -1.9 -2.2)E 1 -1.9 -2.2)E 1 -2.5 -1. 7)E 1 (0/ 26) (0/ 26) (0/ 26) Mn-54 (52) 15 3.3E -1 LTW 3.3E -1 3.7E -2 (0) -3.0 -3.4)E 0 -3.0 -3.4)E 0 -2.3 -3.2)E 0 (0/ 26) (0/ 26) (0/ 26) Co-57 (52) 2.5E -1 LTW 2.5E -1 1. lE -1 (0) -1.3 -4.9)E 0 -1.3 -4. 9)E 0 -1. 7 -1.2)E 0 (0/ 26) (0/ 26) (0/ 26) Co-58 (52) 15 -1.0E -1 LTW -1.0E 2.0E -1 (0) -2.8 -2.5)E 0 -2.8 -2.5)E 0 -2.8 -2.5)E 0 (0/ 26) (0/ 26) (0/ 26) Fe-59 (52) 30 8.6E -1 LTW 8.6E -1 1. 2E -1 (0) -3.2 -18.2)E 0 -3.2 -18.2)E 0 -4.8 -2.9)E 0 (0/ 26) (0/ 26) (0/ 26) Co-60 (52) 15 6.BE -2 STJ 1. 7E -1 1.7E -1 (0) -2.6 -2.9)E 0 -3.l -3.2)E 0 -3.1 -3.2)E 0 (0/ 26) (0/ 26) (0/ 26) Zn-65 (52) 30 3.2E -1 LTW 3.2E 1. BE -1 (0) -3.9 -12.3)E 0 -3.9 -12.3)E 0 -5.9 -7.5)E 0 (0/ 26) (0/ 26) (0/ 26) Se-75 (52) 2.4E -1 LTW 2.4E 3.8E -1 (0) -1.5 -3. 7)E 0 -1.5 -3.7)E 0 -3.9 -2.2)E 0 (0/ 26) (0/ 26) (0/ 26)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Drinking Water IWDl 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**

Nb-95 (52) 15 -2.0E -1 STJ 9.3E -1 9.3E -1 (0) -2.4 -2.0)E 0 -2.7 -3.3)E 0 -2.7 -3.3)E 0 (0/ 26) (0/ 26) (0/ 26) Zr-95 (52) 30 2.6E -1 STJ 3.5E -1 3.5E -1 (0) -4.6 -6.5)E 0 -4.5 -4.2)E 0 -4.5 -4.2)E 0 (0/ 26) (0/ 26) (0/ 26) Ru-103 (52) -6.4E -1 STJ -4.8E 4.8E -1 (0) -2.7 -l.6)E 0 -3.2 -2.0)E 0 -3.2 -2.0)E 0 (0/ 26) (0/ 26) (0/ 26) Ru-106 (52) -2.5E 0 STJ 4.2E 0 4.2E 0 (0) -1. 7 -2.7)E 1 -1.8 -6.3)E 1 -1.8 -6.3)E 1 (0/ 26) (0/ 26) (0/ 26) Ag-108m (52) -3.2E -1 STJ 1. 6E -1 1. 6E -1 (0) -2.0 -1.l)E 0 -2.4 -2.7)E 0 -2.4 -2.7)E 0 (0/ 26) (0/ 26) (0/ 26) Ag-110m (52) -3.4E -1 LTW -3.4E 7.4E -1 (0) -2.2 -2.2)E 0 -2.2 -2.2)E 0 -2.7 -3.6)E 0 (0/ 26) (0/ 26) (0/ 26) Sb-124 (52) -1.8E -1 STJ 5.2E -1 5.2E -1 (0) -5.3 -9.4)E 0 -4.6 -7.9)E 0 -4.6 -7.9)E 0 (0/ 26) (0/ 26) (0/ 26) Sb-125 (52) 6.lE -4 STJ 8.4E -1 8.4E -1 (0) -5.2 -11.8)E 0 -4.4 -9.3)E 0 -4.4 -9.3)E 0 (0/ 26) (0/ 26) (0/ 26) 1-131 (52) 1 3.9E -2 LTW 3.9E -2 3.lE -2 (0) -4.2 -8.9)E 4.2 -8.9)E 4.9 -3.8)E -1 (0/ 26) (0/ 26) (0/ 26) Cs-134 (52) 15 7.4E -1 LTW 7.4E -1 9.3E -2 (0) -1.9 -9.3)E 0 -1.9 -9.3)E 0 -1.9 -2.9)E 0 (0/ 26) (0/ 26) (0/ 26) Cs-137 (52) 18 -3.0E -2 STJ 6.5E -1 6.5E -1 (0) -2.1 -6.4)E 0 -1.1 -3. 6)E 0 -1.1 -3.6)E 0 (0/, 26) (0/ 26) (0/ 26) Ba-140 (52) 60 9.9E -2 STJ 9.2E -1 9.2E -1 (0) -1.1 -1. 7)E 1 -1.4 -2.l)E 1 -1.4 -2.l)E 1 (0/ 26) (0/ 26) (0/ 26)

Donald C. Cook Nuclear Plant Annuai Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD La-140 (52) 15 (0) Ce-141 (52) (0) Ce-144 (52) (0) Ac-228 (52) (0) Th-228 (52) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Drinking Water IWD) UNITS: pCi/liter Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

3.7E -1 LTW 3.7E 4.8 -4.1)E 0 -4.8 -4.l)E 0 (0/ 26) (0/ 26) 1.0E -1 LTW 1.0E 6.0 -4.5)E 0 -6.0 -4.5)E 0 (0/ 26) (0/ 26) -2.8E -1 STJ 3.4E 0 -1. 6 -1.8)E 1 -9.5 -27.7)E 0 (0/ 26) (0/ 26) 2.0E 0 LTW 2.0E 0 -1.2 -1.5)E 1 -1.2 -1.5)E 1 (0/ 26) (0/ 26) 1.6E 0 STJ l.8E 0 -4.8 -7.1)E 0 -5.0 -5.9)E 0 (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., > MDC) is shown in parentheses.

- - Mean value is set to O.OE 0 for calculated mean values with exponent less than E-06. Control Stations Mean*** Range No. Detected**

2.3E 7.1 -6.7)E 0 (0/ 26) -2.1E 4.8 -3.8)E 0 (0/ 26) 3.4E 0 -9.5 -27.7)E 0 (0/ 26) 1.0E 0 -9.3 -13.8)E 0 (0/ 26) 1.8E 0 -5.0 -5.9)E 0 (0/ 26)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Ground Water (WGl 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**

H-3 (68) 2000 1.1E 2 W-12 3.7E 2 NO DATA (0) -9.0 -10.9)E 2 -5.8 -8.9)E 2 (0/ 68) (0/ 4) Be-7 (68) -5.6E -1 MW-21 6.lE 0 NO DATA (0) -2.4 -1.9)E 1 2.9 -13.0)E 0 (0/ 68) (0/ 4) K-40 (68) 3.6E 0 W-4 1.BE 1 NO DATA (0) -4.0 -4.9)E 1 -8.5 -36.5)E 0 (5/ 68) (1/ 4) Cr-51 (68) -7.0E -1 W-4 7.5E 0 NO DATA (0) -2.1 -2.6)E 1 -3.3 -25.6)E 0 (0/ 68) (0/ 4) Mn-54 (68) 15 -8.9E -2 W-6 6.0E -1 NO DATA (0) -2.3 -1.B)E 0 -4.9 -16.7)E -1 (0/ 68) (0/ 4) Co-57 (68) 5.5E -2 MW-20 8.6E -1 NO DATA (0) -1. 7 -1.9)E 0 2.1 -19.0)E -1 (0/ 68) (0/ 4) Co-58 (68) 15 -1. 6E -1 W-4 9.5E -1 NO DATA (0) -2.8 -3.7)E 0 -1.3 -3. 7)E 0 (0/ 68) (0/ 4) Fe-59 (68) 30 3.7E -1 W-15 1. 6E 0 NO DATA (0) -2.9 -5.6)E 0 -3.2 -32.6)E -1 (0/ 68) (0/ 4) Co-60 (68) 15 -1. SE -1 W-3 6.5E -1 NO DATA (0) -4.4 -3.B)E 0 -1.6 -28.5)E -1 (0/ 68) (0/ 4) Zn-65 (68) 30 -1.2E -1 W-5 1.5E 0 NO DATA (0) -7.3 -6.0)E 0 4.9 -3140.0)E -3 (0/ 68) (0/ 4) Se-75 (68) 2.7E -1 W-5 2.5E 0 NO DATA (0) -2.6 -4.4)E 0 2.9 -44.2)E -1 (0/ 68) (0/ 4) Nb-95 (68) 15 1. 3E -1 W-2 1.7E 0 NO DATA (0) -3.2 -4. 9)E 0 -2.9 -49.1)E -1 (0/ 68) (0/ 4)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Ground Water (WGl 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**

Zr-95 (68) 30 6.5E -1 W-15 2.9E 0 NO DATA (0) -4.8 -9.0)E 0 -2.2 -89.6)E -1 (0/ 68) (0/ 4) Ru-103 (68) -5.6E -1 MW-20 2.8E -1 NO DATA (0) -5.0 -1.6)E 0 -8.7 -16.0)E -1 (0/ 68) (0/ 4) Ru-106 (68) -9.9E -1 W-15 6.2E 0 NO DATA (0) -3.7 -2.1)E 1 -1. 5 -15. 7) E 0 (0/ 68) (0/ 4) Ag-108m (68) 1. GE -1 W-8 1.0E 0 NO DATA (0) -2.0 -2.3)E 0 9.5 -1970.0)E -3 (0/ 68) (0/ 4) Ag-110m (68) -8.5E -2 W-15 1.1E 0 NO DATA (0) -3.3 -4.8)E 0 -8.1 -48.4)E -1 (0/ 68) (0/ 4) Sb-124 (68) 6.8E -2 W-10 2.0E 0 NO DATA (0) -3.2 -6.2)E 0 -1.2 -62.3)E -1 (0/ 68) (0/ 4) Sb-125 (68) 2.3E -1 W-8 4.8E 0 NO DATA (0) -7.7 -20.1)E 0 -2.8 -20.1)E 0 (0/ 68) (0/ 4) 1-131 (68) 1 -5.1E -2 W-12 1.3E 0 NO DATA (0) -3.8 -3.6)E 0 -2.3 -35.6)E -1 (0/ 68) (0/ 4) Cs-134 (68) 15 4.4E -1 W-15 1.4E 0 NO DATA (0) -1.8 -4.2)E 0 -2.5 -41.7)E -1 (0/ 68) (0/ 4) Cs-137 (68) 18 -4.7E -2 W-5 6.9E -1 NO DATA (0) -3.1 -3.3)E 0 -3.8 -12.8)E -1 (0/ 68) (0/ 4) Ba-140 (68) 60 -2.8E -1 MW-20 4.2E 0 NO DATA (0) -2.1 -1.5)E 1 -1.7 -14.4)E 0 (0/ 69) (0/ 4) La-140 (68) 15 3.6E -1 W-10 1.4E 0 NO DATA (0) -5.6 -4.6)E 0 2.3 -38.9)E -1 (0/ 68) (0/ 4)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Ce-141 (68) (0) Ce-144 (68) (0) Ac-228 (68) (0) Th-228 (68) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Ground Water {WG) UNITS: pCi/liter Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

-8.8E -2 MW-20 1.6E 0 -6.4 -4.7)E 0 3.5 -2950.0)E (0/ 68) (0/ 4) 1.6E 0 W-5 1.5E 1 -2.0 -4.7)E 1 -4.6 -47.4)E 0 (0/ 68) (0/ 4) 8.6E -1 W-8 4.6E 0 -1.1 -l.8)E 1 1.3 -11. 3) E 0 (0/ 68) (0/ 4) 1. 7E 0 W-7 3.0E 0 -3.4 -7.5)E 0 7.9 -55.5)E -1 (3/ 68) (0/ 4) -3 *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. Control Stations Mean*** Range No. Detected**

NO DATA NO DATA NO DATA NO DATA

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

H-3 (8) 2000 -1. SE 2 SWL-3 -1.5E 2 NO DATA (0) -1.1 -0.2)E 3 -1.1 -0.2)E 3 (0/ 8) (0/ 4) Be-7 (24) 3.3E 0 SWL-3 5.9E 0 NO DATA (0) -1. 7 -3.4)E 1 -8.0 -34.3)E 0 (0/ 24) (0/ 12) K-40 (24) -4.lE 0 SWL-2 -4.3E -1 NO DATA (0) -3.5 -3.6)E 1 -3.0 -2.6)E 1 (0/ 24) (0/ 12) Cr-51 (24) -1.5E 0 SWL-2 -1.3E 0 NO DATA (0) -2.3 -1.4)E 1 -2.3 -l.2)E 1 (0/ 24) (0/ 12) Mn-54 (24) 15 6. 6E -2 SWL-2 1. 6E -1 NO DATA (0) -2.0 -2.5)E 0 -2.0 -2.5)E 0 (0/ 24) CO/ 12) Co-57 (24) 2.7E -1 SWL-2 5.5E -1 NO DATA (0) -2.2 -4.2)E 0 -1.0 -4.2)E 0 CO/ 24) CO/ 12) Co-58 (24) 15 3.5E -2 SWL-2 3.2E -1 NO DATA (0) -2.3 -2.4)E 0 -1.3 -2.4)E 0 (0/ 24) CO/ 12) Fe-59 (24) 30 4.lE -1 SWL-2 l.lE 0 NO DATA (0) -4.6 -3.5)E 0 -1.9 -3.5)E 0 co/ 24) CO/ 12) Co-60 (24) 15 -1. lE -1 SWL-3 -6.5E -2 NO DATA (0) -1.4 -l.5)E 0 -9.l -9.0)E -1 CO/ 24) CO/ 12) Zn-65 (24) 30 1.3E -1 SWL-2 2.5E -1 NO DATA (0) -3.4 -5.2)E 0 -3.3 -5.2)E 0 (0/ 24) CO/ 12) Se-75 (24) -4.3E -1 SWL-2 * -3.7E -1 NO DATA (0) -1.4 -l.2)E 0 -1.4 -0. 7)E 0 CO/ 24) CO/ 12) Nb-95 (24) 15 l.2E -1 SWL-2 3.0E -1 NO DATA (0) -3.6 -2.5)E 0 -3.6 -2.5)E 0 (0/ 24) CO/ 12)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) 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**

Zr-95 (24) 30 4.6E -1 SWL-3 7.2E -1 NO DATA (0) -1.9 -3.l)E 0 -1.1 -3.l)E 0 (0/ 24) (0/ 12) Ru-103 (24) -5.4E -1 SWL-3 -2.3E -1 NO DATA (0) -5.8 -1.4)E 0 -3.2 -1.0)E 0 (0/ 24) (0/ 12) Ru-106 (24) 6.BE -1 SWL-3 1.0E 0 NO DATA (0) -2.0 -2.7)E 1 -7.1 -14.5)E 0 (0/ 24) (0/ 12) Ag-108m (24) 1.lE -1 SWL-2 3.3E -1 NO DATA (0) -1.3 -2.l)E 0 -4.5 -21.4)E -1 (0/ 24) (0/ 12) Ag-110m (24) 1. BE -1 SWL-2 3.3E -1 NO DATA (0) -2.1 -3.0)E 0 -1.6 -3.0)E 0 (0/ 24) (0/ 12) Sb-124 (24) -6.7E -1 SWL-2 -2.lE -2 NO DATA (0) -6.0 -5.l)E 0 -3.3 -5.l)E 0 (0/ 24) (0/ 12) Sb-125 (24) 4.2E -1 SWL-2 9.lE -1 NO DATA (0) -2.8 -10.l)E 0 -2.2 -10.l)E 0 (0/ 24) (0/ 12) 1-131 (24) 1 -8.4E -1 SWL-3 -2.6E -2 NO DATA (0) -6.8 -6.4)E 0 -6.4 -6.4)E 0 (o/ 24) (0/ 12) Cs-134 (24) 15 3.7E -1 SWL-2 6.5E -1 NO DATA (0) -9.8 -18.B)E 3.1 -18.B)E -1 (0/ 24) (0/ 12) Cs-137 (24) 18 3.2E -1 SWL-3 4.0E -1 NO DATA (0) -2.2 -4.0)E 0 -2.2 -4.0)E 0 (0/ 24) (0/ 12) Ba-140 (24) 60 -1.2E -1 SWL-3 7.lE -1 NO DATA (0) -1.5 -1.B)E 1 -1.3 -1.4)E 1 (0/ 24) (0/ 12) La-140 (24) 15 -2.7E -1 SWL-3 -2.5E -1 NO DATA (0) -9.6 -8.9)E 0 -4.0 -6.2)E 0 (0/ 24) (0/ 12)

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Radionuclides (No. Analyses)

Required Non-Routine*

LLD Ce-141 (24) (0) Ce-144 (24) (0) Ac-228 (24) (0) Th-228 (24) (0) Table 3.1 Radiological Environmental Program Summary Indiana Michigan Power Co., DC Cook Nuclear Plant (January -December 2016) MEDIUM: Surface Water (WS) UNITS: pCi/liter Indicator Stations Station With Highest Mean ------------------------

Mean*** Station Mean*** Range Range No. Detected**

No. Detected**

-6.7E -1 SWL-2 -4.4E 9.6 -2.9)E 0 -5.7 -2.9)E 0 (0/ 24) (0/ 12) 4.4E -1 SWL-2 l.5E 0 -7.4 -7.l)E 0 -4.6 -4.7)E 0 (0/ 24) (0/ 12) -6.0E -1 SWL-2 -5.8E 1.2 -0.8)E 1 -1.2 -0.8)E 1 (0/ 24) (0/ 12) 1.4E 0 SWL-3 1.6E 0 -3.8 -5.8)E 0 -3.8 -5.8)E 0 (0/ 24) (0/ 12)

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. Control Stations Mean*** Range No. Detected**

NO DATA NO DATA NO DATA NO DATA

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 3.2 2016 Environmental TLD Exposure Rate Measurements

(µR/hr) Onsite TLDs Offsite and Control Highest Mean (SBN) TLDs Mean 5.1+/-0.4 5.7 +/- 0.8 7.5 +/- 0.4 Range 4.4-6.5 4.5-8 7.2-8 No. of Measurements*

48 60 4 Each measurement was based on quarterly readings from three TLD elements.

Units are µR (micro-roentgen) per hour.

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Station Number T-01 T-02 T-03 T-04 T-05 T-06 T-07 T-08 T-09 T-10 T-11 T-12 NBF SBN DOW COL OFT-1 OFT-2 OFT-3 OFT-4 OFT-5 OFT-6 OFT-7 OFT-8 OFT-9 OFT-10 OFT-11 Table 3.3 2016 ENVIRONMENTAL TLD DATA

SUMMARY

First Quarter 4.8 +/- 0.2 4.9 +/- 0.2 4.7 +/- 0.2 5.5 +/- 0.2 5.2 +/- 0.3 4.9 +/- 0.2 4.5 +/- 0.2 5.0 +/- 0.2 4.4 +/- 0.2 5.1+/-0.2 5.1 +/- 0.3 4.8 +/- 0.4 5.3 +/- 0.2 7.2 +/- 0.3 4.8 +/- 0.3 4.5 +/- 0.2 5.1+/-0.2 5.2 +/- 0.2 5.4 +/- 0.2 5.6 +/- 0.2 5.3 +/- 0.4 6.2 +/- 0.3 5.2 +/- 0.3 6.3 +/- 0.2 5.1+/-0.3 5.5 +/- 0.2 6.3 +/- 0.3 Exposure Rate {µR/hr +/- 1 std. dev.) Secono! Third Quarter Quarter 5.1+/-0.2 5.2 +/- 0.4 5.1 +/- 0.3 5.0 +/- 0.3 4.5 +/- 0.2 4.6 +/- 0.3 5.6 +/- 0.3 5.9 +/- 0.3 5.0 +/- 0.2 5.0 +/- 0.4 5.0 +/- 0.3 4.8 +/- 0.3 4.8 +/- 0.2 4.9 +/- 0.3 5.1 +/- 0.4 5.3 +/- 0.3 4.5 +/- 0.3 4.5 +/- 0.3 5.1+/-0.3 5.2 +/- 0.4 4.9 +/- 0.5 4.7 +/- 0.3 4.9 +/- 0.2 5.3 +/- 0.2 5.3 +/- 0.2 5.3 +/- 0.3 7.2 +/- 0.3 7.4 +/- 0.4 4.9 +/- 0.2 4.9 +/- 0.3 4.7 +/- 0.3 4.7 +/- 0.2 4.8 +/- 0.2 5.1+/-0.2 5.2 +/- 0.3 5.4 +/- 0.3 5.2 +/- 0.2 5.3 +/- 0.2 5.4 +/- 0.2 5.3 +/- 0.3 5.1+/-0.3 5.2 +/- 0.2 6.7 +/- 0.2 6.6 +/- 0.4 5.4 +/- 0.2 5.2 +/- 0.3 5.7 +/- 0.2 5.8 +/- 0.3 5.5 +/- 0.2 5.4 +/- 0.3 5.1 +/- 0.3 5.2 +/- 0.3 6.0 +/- 0.2 6.4 +/- 0.3 Average Annual Fourth Exposure Rate Quarter (µR/hr) 5.7 +/- 0.3 5.2 5.5 +/- 0.3 5.1 5.1 +/- 0.4 4.7 6.5 +/- 0.6 5.9 5.7 +/- 0.3 5.2 5.5 +/- 0.3 5.1 5.3 +/- 0.3 4.9 5.5 +/- 0.3 5.2 5.0 +/- 0.3 4.6 5.4 +/- 0.3 5.2 5.5 +/- 0.3 5.1 5.4 +/- 0.2 5.1 6.0 +/- 0.2 5.5 8.0 +/- 0.5 7.5 5.8 +/- 0.2 5.1 5.5 +/- 0.3 4.9 5.5 +/- 0.3 5.1 5.9 +/- 0.3 5.4 5.5 +/- 0.2 5.4 6.1 +/- 0.4 5.6 5.9 +/- 0.3 5.4 7.0 +/- 0.4 6.6 6.0 +/- 0.2 5.5 7.0 +/- 0.3 6.2 6.1+/-0.3 5.5 6.0 +/- 0.3 5.5 7.1+/-0.3 6.5 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 Data Sheet 1, Documentation of Unavailable Samples, of CNP procedure 12-THP-6010-RPP-643, Quarterly Review of Radiological Environmental Monitoring Program (REMP) Data, and in the Corrective Action Program (CAP) by way of an Action Request (AR) or General Tracker (GT). Note that due to the retirement of AT&T 2G towers, 2016 was a challenging year for prompt response to power losses to air monitoring stations.

For this reason, the existing telemetry was retired, and replaced with a new and updated 3G system in November of 2016. The following deviations were noted for the 2016 sampling program: 1. 12/28/2015:

At 1736 (5:36pm), air station ONS-1 lost power due to a heavy ice storm which took place that day. The loss of power spanned the end of 2015 and start of 2016, as well as two sampling periods. Total power loss was 64 hours7.407407e-4 days 0.0178 hours 1.058201e-4 weeks 2.4352e-5 months and 44 minutes. The loss of time applicable to 2016 is 23 hours2.662037e-4 days 0.00639 hours 3.80291e-5 weeks 8.7515e-6 months and 35 min. AR 2016-0323 was written to document this program deviation.

Sufficient sample volume was obtained so the loss was not detrimental to the sample. 2. 1/9/2016:

ONS-1 air station lost power for 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months due to inclement weather. This lost time was not detrimental to the sample. AR 2016-1319 was written to document this program deviation.

3. 2/24/2016:

ONS-6 air station lost power for 15 hours1.736111e-4 days 0.00417 hours 2.480159e-5 weeks 5.7075e-6 months and 50 minutes due to inclement weather. This lost time was not detrimental to the sample. AR 2016-2367 was written to document this program deviation.

4. 3/26/2016:

ONS-2 air station lost power for 43.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months due to work on a nearby electric pole and transformer which feed the air station. This lost time was not detrimental to the sample. AR 2016-3510 was written to document this program deviation.

5. 1/12/2016 and then from 1/17-1/29:

No surface water samples were obtained due to ice buildup along the shore of Lake Michigan.

AR 2016-1331 was written to document this program deviation.

Sufficient sample volume for the monthly composite was obtained.

6. 1/1/2016 through 12/31/2016:

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 2016. This has been the case since 2010. GT 00102954-01 documents this Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 2016. Broadleaf sampling in lieu of milk was performed.

7. 6/1 /2016: Air station designated SBN, located off-site in South Bend was found to have no power. SBN air station had lost power on 5/31 at 1840 due to Kankakee Station power failure. Loss of power was about 14.1 hours1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months for this sample period. This loss of run time is not detrimental to the air sample or the program's ability to provide quality data. 300,000 liters are the minimum needed for a representative sample. Sample collected was 511,877L.

Power was restored on 6/2/2016 with a second sampling period being affected by a 30-hour time loss. Sample volume collected was 461,420L.

Total loss of power was 44 hours5.092593e-4 days 0.0122 hours 7.275132e-5 weeks 1.6742e-5 months . AR 2016-7289 was written to document this program deviation.

8. 6/22/2016:

During collection of Radiological Environmental Monitoring Program (REMP) environmental air samples, the air station designated ONS-1, located behind the Visitor Center off Rosemary RoaO, was founalOnave ncq50weY:----ONS-1 lost 47 hours5.439815e-4 days 0.0131 hours 7.771164e-5 weeks 1.78835e-5 months of run time. However, this loss of run time was not detrimental to the sample. No SENSUS notification was received.

The conduit attached to the power pole had been separated from the pole and the electric cabling was torn. This happened during an extremely strong straight-line wind event, which was not forecasted, on the afternoon of Monday June 20th. The REMP Supervisor contacted AEP T&D. By Friday June 24th a generator was installed and power was restored on Monday 6/27/2016.

Loss of power was about 64 hours7.407407e-4 days 0.0178 hours 1.058201e-4 weeks 2.4352e-5 months . This loss of run time was not detrimental to the air sample or the program's ability to provide quality data. The minimum needed for a representative sample is 300,000 liters. Sample collected was 423,403L.

AR 2016-8154 was written to document this program deviation.

9. 8/17/2016:

During sample pick up, Coloma Radiological Environmental Monitoring Program (REMP) air station (ID name COL) air pump was found to be not working. Upon further investigation it was discovered that the circuit breaker on the flow meter had tripped off. There have been power losses due to strong storms this season. However, due to not being able to validate why the breaker on the flow meter had tripped off, the pump was immediately exchanged for a freshly calibrated one. The removed pump was turned in for calibration, repair, and functional checks. The new pump operated normally.

Total lost time was 49.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months , which was not detrimental to the sample. AR 2016-9936 was initiated to document this event. 10. 9/14/2016:

During the REMP surveillance tours, an environmental technician noted that ONS-6 air pump had lost 83 hours9.606481e-4 days 0.0231 hours 1.372354e-4 weeks 3.15815e-5 months . This occurred during the hottest time of the year, so the temperature in the housing likely caused the air pump to overheat and trip off. This was because a housing fan failure had previously been identified and was awaiting replacement upon the arrival of the new fan. This loss was not detrimental to the sample. This also occurred during the time period telemetry was no longer functioning properly (due to sunset for AT&T 2G towers); therefore no notification was sent or received.

AR 2016-9815 was written to document this program deviation and track the replacement of the housing's fan. Telemetry replacement was completed in December of 2016. The housing fan was also replaced.

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 11. 10/19/2016:

During weekly performance of REMP air sampling, onsite REMP air . station ONS-3, sampler ID number DF-11364 was found de-energized.

Troubleshooting on site revealed the electrical outlet was energized as was all other equipment in the sampler enclosure.

A newly calibrated spare was installed and the sampler was brought to the RP Instrumentation group to try to retrieve the elapsed time and total volume sample accumulated on the sampler via the F&J totalizer display. Attempts to do this were unsuccessful and the totalizer portion of the sampler was declared irreparable.

This was documented in AR 2016-12093.

The particulate filter and iodine cartridge were sent to GEL Labs for routine analysis on October 20th, 2016, but the laboratory was unable to analyze the cartridges due to insufficient volume. The week's sample (October 12-19, 2016) was not viable. This was the only instance where an air sample was unavailable in 2016. This was documented in AR 2016-12176.

12. 11/19/2016:

Due to high winds and high waves, the surface water samples could not be collected.

Seasonal unavailability of surface water samples is expected during this time of the year. This was documented in AR 2017-0997.

13. 12/16/2016; 12/17/2016; 12/19-12/23/2016:

Due to ice formation along the shores of Lake Michigan, surface water samples could not be collected.

This was documented in AR 2017-0997.

14. 2016: During 2016, though several attempts to collect salmon were made, the minimum quantity required for analysis could not be met. Salmon specimens were less than the 4 pounds minimum. This was likely due to a lean salmon population in Lake Michigan for 2016. An additional Perch sample was obtained to supplement this unavailable sample. This is detailed in AR 2016-13418.

4.2 Comparison

of Achieved LLD with Requirements Attachment 3.20 from the ODCM (Table 2.3 in this report) lists the Lower Limits of Detection (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 LLD 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. These factors are summarized below. There were no missed LLDs in 2016. 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 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 objectives 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 2016. 4.4 Data Analysis by Media Type -Discussion The 2016 REMP data for each media type are discussed below. Graphical plots of monitoring data are also shown in Figures 4.1 to 4.7. Details of results of gamma isotopic analyses are listed in Table 3.1 and full details of all measurements are in Appendix D.1 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 the 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 ELAB 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 ELAB (historical data before the second half of 2010) and GEL, (since the second half of 2010 through 2016). 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 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 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 that the gross beta counting is used as a qualitative indicator of changes in environmental conditions, not as a quantitative measure of the actual radioactivity 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: tl Unusually harsh weather conditions experienced locally which would lock potential airborne radioactivity in frozen soil or under snow, e 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 e 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 concentration 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. No other radionuclides were detected in the quarterly composites of the weekly air particulate samples. 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.

Donald C. Cook Nuclear Plant Annual Radiologic a l E nvironm e ntal Op e r a ting R e port 2016 § 0 c.. 'b .... c 0 +:l ni ,t:i c: Cl> u c: 0 0 *:;: +:l u <t § u c.. '? 0 .... c 0 ... "E Cl> u c: 0 0 *:;: +:l u <t 50.0 45.0 40.0 35.0 30.0 25.0 -20.0 15.0 10.0 5.0 0.0 45.0 40.0 35.0 30.0 25.0 20.0 : : : Figure 4.1 Mean Annual Gross Beta Concentration in Air Particulate Samples Collected over 10 Years l nd i catorlocations

-All Co n tro l L ocatio n s : ******** --********--*********--********--******** : : ******** ******** ********* ******** ******** ....... *:-:.:-2007 2008 2009 20 1 0 20 11 2012 2013 2 01 4 2015 Year Figure 4.2 Mean Monthly Gross Beta Concentration in Air Particulate Samples Collected in 2016 20 1 6 1 5.0 +------------

+-l ndicatorlocation

_.Contro l L oca tion Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 2016. 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 K-40 was identified in five samples and Th-228 was identified in three out of sixty-eight samples. The presence of K-40 and Th-228 in groundwater samples is attributed to natural occurrences since they are not fission or activation products related to plant operat i ons. Tritium was not detected above the associated MDC in any 2016 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 results were not due to plant operations.

Donald C. Cook Nuclear Plant Annual Radiological Environmenta l Operating Report 2016 Figure 4.3 Tritium Detected in Groundwater Over the Past 10 Years (W1-W7) 20,000 .L ......

.. ***-****-*-******-*-**-**********--

- - - ..

Reporting L evel .... i1 .!:: 15,000 +----c: 0 ..... c: GI 0 § 10 ,0 00 0 E ::i :;::; . W-1 *W-2 .. w.3 *W-4 ti W-6 =w-7 5,000 . *****-**----*-***-*--

---**-*-**-*-*-**----* -****-*--**-*---**-*-**---*-**

-*----*-*-----------**-*****--******* ****-******-* NRC Lo we r Li mit of D etec t io n _J_L ___ l.1 J J_§_JJ_ __ Sample Date Figure 4.4 Tritium Detected in Groundwater Over the Past 10 Years (W8-W14, MW20, MW21) 25,000 *W-8 m W-9 b W-11 *W-1 2 *W-13 ll W-14 iii MW-20 a MW-21 20,000 -................................................

........................

...................................................

............ Reporting L evel :!: -0 a. c: :8 15,000 ..... c: Q) u c: 0 u E 10,000 +-----------------------------------------

s :;; 5,000 -!--------0 Lo wer Lim i t of D e tect io n ------r---******-----,----,----**.._***-*-** . Jan*0 1 Jan*OS Jan*0 9 Jan:\O Jal\*'\'\

Ja!\*'\l Jan*'\3 Jan*'\4 Jan*'\5 Ja"*'\6 Jan*'\1 Sample Date Donald C. Cook Nuclear Plant Annua l Radiological Environmenta l Operating Report 2016 -... (I) .... 20,000 4.4.4 Drinking Water Drinking water samp l es were collected daily from one indicator and one contro l station. A 14-day composite was ana l yzed for gamma isotopic and gross beta rad i oactivity. A quarterly composite was ana l yzed for tritium. A specific lodine-131 low-level ana l ysis performed on all samp l es indicated that no lodine-131 was present. Figure 4.5 shows a plot of the tritium data going back 10 years. Only measurements that were detected at levels above the MDC were plotted. No_ tritium was detected in drinking water samples in 2016. During 2016, the presence of gross beta radioactivity was not identified in any indicator or control samples. No gamma-emitting nuclides were identified in any 2016 samples. While drinking water samp ling was not performed as part of CNP's PRMP, the information detai l ed above was evaluated and found to be consistent with data obtained during the plant's operat i onal history. Figure 4.5 Tritium Detected in Drinking Water Over the Past 10 Years Report ing Level s 15,000 +---* 0 a. -c: 0 :;:; .... c: 10,000 +----------------------------c: 0 0 E :J :;:; *StJo se ph *Lake Township 5,000 +--------------------------------

Lo wer Limit of D etection 0 +-----,-------,-----,-----.-----.--

---,------.------.-----,-------.-

J a tl

01 Jan-OS Jan-0 9 Jan-"\O Jan-"\"\ Jan-"\'2.

Jan-'1 3 Jan-"\4 Jan-"\S Jan-"'1 6 Jan-'1 1 Sample Date ---------------------------'

Donald C. Cook N uclear P l ant Annual Radio l og i ca l Environmenta l Operat i ng Report 2016 4.4.5 Surface Water S u rf ace water samples were collected dai l y from t wo indicator locat i ons, when ava il ab l e (See section 4.1 for sampling deviati o ns). Monthly co m posites were analyzed for gamma-emitting radionuclides and quarterly composites were analyzed for tr i tium. No tritium or gamma emitting radionuc li des were detected above the MDC in any of t he samples collected in 2016. The inform a tion detai l ed above w as e v alua ted and fo u nd t o be c onsis ten t with data obtained during pa s t oper a tional p e riods an d t he c o nduc t o f CNP's PRMP. There wa s no i mpact to t his sa mp l e medi u m fro m pl a n t oper at ions in 2016. 4.4.6 Sedim e nt Semia n nual samples of lake sediments were collected from two ind i cator stations and a nalyzed for gamma-emitt i ng nuclides. During 2016, K-40 was detected in a ll four samples, and Th-228 was detected in three s amples. A d dition a lly, t wo s a mpl es cont a ined Ac-2 28. These radionuclides are expected as part of t he natura ll y-occurr i ng thor i um decay series. No other gamma-emitting nuclides were detected in any of the samp l es collected in 2 0 16. Un l ike many past operat i o n al and operationa l periods where traces of Cs-13 7 were found , no detectable Cs-137 was identified in 2016 samp l es [See Table 3.1]. T h e i nformation deta il ed above was evaluated and found to be cons i stent wit h data obtained during t h e conduct of CNP's PRMP and the presence of naturally-occurring radionuclides (K-4 0 and Ac/Th-228) was not attributed to plant operation. 4.4.7 Milk Milk samples were not collected during 2016, as milking operat i ons ceased at the indicator farm (Shafer) in September 2014, and at the contro l farm (Livinghouse) in October 2014. Condition Report 04351048 and AR 2011-1 3312-1 had pre v ious l y been written to document the mi l k farm events a nd to va l idate t he adequacy of the broad l eaf and mi l k sampling process. 4.4.8 Food Products & Vegetation Vegetation samples (broad l eaf) analyzed for gamma-emitting nuc l ides ident i fied the presence of naturally-occurring Be-7 and K-40 in all samples from both indica t or and contro l l ocations.

Three indi c ator samp l es co n tained trace leve l s of Cs-137. T h e ind i cator samples ranged fr o m 37.2 to 62.1 pC i/kg. AR 2016-11543 w as written to document the occurrences for track i ng purposes. Althoug h the presence of Cs-137 is consistent w ith historical data, pre-o perat ion a l samplings of broad l eaf med i a were n o t co ll ected before CNP construction. The historica l resu l ts fo r t h is med i a indicate that t h e prese n ce of Cs-137 could be the res u lt of atmospher i c weapo n s testing. The presence of Cs-137 was noted in D on ald C. Cook Nuc l ear P l ant Annua l Rad i o l og i cal Env i ronmenta l Operating Report 20 1 6 2011 after the Fukushima disaster.

AR 2011-4952 was wri tt en in res ponse t o the 2 011 sa mple s. T he Cs-137 d etec te d is not c on s i de r e d to be a result of CNP gaseous effluents, as this result is consistent with historical data, and there were no Cs-137 re l eases from 2010 through 2014 or in 2016, with only one ten (10) minute release containing Cs-137 in 2015. One ann u al sample of food products (grapes) each from two indic at or and a control location was analyzed for gamma-emitting nuclides. Analysis identified t he pre s ence of naturally-occurring K-40 and Be-7 in both indicator a nd con t rol samples. One indicator sample cont a ined a tr a ce level of Cs-137(60.2 pCi/kg).This was documen t ed in AR 2016-11543. While food produc t sampling was not performed as part of CNP's PRMP, t he information detailed above was evalua t ed a nd found to be consisten t with data obtained during the plant's oper a tional history. The presence of t he naturally-occ u r r ing detected radionucl i des and a t r a ce level of C s-137 was not attributed t o plant operations. 4.4.9 Fis h REMP fish samples were collected on two occasions at two indic at or and two control locations. K-40 was detected in all the samples. Trace levels of Cesium-137 were observed in three indicator and four control samples. Additionally, non-REMP perch, salmon, and trout sampling was initiated in the third quarter of 2011. Two of the three non-REMP indicator samples (trout and perch) had a trace leve l of Cs-137 (17.9 and 20.7 pCi/kg;. All three samples had K-40. ARs 2016-10353, 2016-14073, 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 tota l for 2016. 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 t he winter months. This is attributed primarily to the attenuat i ng effect of the snow cover and frozen ground on radon emissions and on direct irradiation by natura lly-occurring radionuclides in the soil. Also contributing to the variation in radiation levels at different Donald C. Cook Nuclear Plant Annual Radiological Environmenta l Operating Report 2016 16.0 14.0 12.0 ... Cl t: I'll 8 10.0 .§. Cl 8.0 .... I'll c:: !!! :I 6.0 Ill 8. >< w 4.0 2.0 0.0 1 fie l d sites was the varying d i stribut i on of radionuc l ides in the underlying soi l , rock or nearby bui l ding mater i als. Figure 4.7 i llustrates 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 detectab l e p l ant component of direct radiation that can be seen above the natura l background exposure rate. In July 2010 , the Environmental Dosimetry Company assumed responsibility for cal i bration 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. Figure 4.6 Direct Radiation

-Quarterly TLD Results __.. -I -t-O nsi te ...,._Orf s i te -.-control I 2 3 4 Measurement Quarter Do n a l d C. Cook Nuc l ear P l ant Annua l Rad i ologica l Environmental Operating Report 2016 a; IG 8 E QI Cl :! ! Figur e 4.7 Dir ec t Radiation, Annual Summary 10 Year s Hi s toric a l Tr e nd 20 18 =on-Sit e O ff-Si te 16 -C ontro l 14 12 10 8 -.! _f i " 1. --c' -:!f --F;. -_IS --,. , ... '\ ,._ I*;. it I'. I* " " 1. ,, ,. l*c . " *' *.' \ 6 4 2 0 ' l'i'* ;: I .. '. :>* ' ,, R " ' I" *' , , * ii ., I* '.* . , , ,. ::.; " i! . '** !.; -,-2 007 200 8 2009 2010 2011 2012 2 013 2 014 201 5 2016 Y ea r 4.4.11 Additional Sample Analysis (non-ODCM required samples) Groundwater (Radioactive Equipment Storage Facility, Steam Generator wells) -Two one-liter well wa t er samples were taken at 4 locations q u a rt e rly. These sa mpl es w e re a n a lyzed for t ritium by G E L. The sa mples a re 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 t his data was possible because since 2007, there has been no positive identification of tritium in t he 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 2016 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 2016. 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 1 OCFR50 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 in NCRP 94 (Reference 2). Trace levels of Cesium-137 were detected in seven REMP fish samples and two REMP samples and are detailed in Table 5.1 and dose summarized in Table 5.4. The concentrations ranged from 6.63 to 29.9 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 2.69E-02 mrem/year total body (for the adult age group) and 4.28E-02 mrem/year to the liver (for the teen age group). This represents 0.9% and 0.4% of the total body and organ dose objectives of 1 OCFR50 Appendix I (3 mrem/yr and 10 mrem/yr, respectively).

Table 5.1: Cs-137 Concentration in Fish Samples Media Station Sample Concentration Date . (pCi/kg) Fish TRT-Forebay 393360001 17.9 3-14-16 Fish OFS-N .398213001 11.4 5-24-16 Fish ONS-S 398213003 6.63 5-24-16 Fish OFS-S 398213004 18.1 5-24-16 Fish PCH-CNP 405197001 20.7 9-01-16 Fish OFS-N 406683001 29.7 9-22-16 Fish ONS-N 406683002 29.9 9-22-16 Fish ONS-S 406683003 12.3 9-22-16 Fish OFS-S 406683004 15.1 9-22-16 Average 18.0 Trace levels of Cesium-137 were detected in three broadleaf vegetation samples and are detailed in Table 5.2 with doses summarized below in Table 5.4. The concentrations ranged from 37.2 to 62.1 pCi/kg. One concentration was above 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 5.44E-02 mrem/year (for the adult age group) and total critical organ dose Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 of 1.01 E-01 mrem/year to the bone (for the child age group). This represents 1.1 % and 0. 7% of the total body and organ dose objectives of 1 OCFR50 Appendix I (5 mrem/yr and 15 mrem/yr respectively).

Table 5.2: Cs-137 Concentrations in Broad leaf Samples Media Station Sample Concentration Date (pCi/kg) Broad leaf ONS2-V 404202002 37.2 8-18-16 Broad leaf ONS2-V 405413002 62.1 9-06-16 Broad leaf ONS2-V 405413003 43.5 9-06-16 Average 47.6 A trace level of Cesium-137 was detected in one grape sample and is detailed in Table 5.3 with doses summarized below in Table 5.4. The concentration was 60.2 pCi/kg, which is just above the required LLD of 60 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 total body dose of 1.23E-01 mrem/year (for the adult age group) and total critical organ dose of 5.63E-01 mrem/year to the bone (for the child age group). This represents 2.5% and 3.8% of the total body and organ dose objectives of 1 OCFR50 Appendix I (5 mrem/yr and 15 mrem/yr respectively).

Table 5.3: Cs-137 Concentrations in Grape Samples Media Station Sample Concentration Date (pCi/kg) Grapes ONS-G 405413008 60.2 9-06-16 Average 60.2 Table 5.4, 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 5.4: Summary of Off-Site Dose Commitments Media Radionuclide Limiting Organ Organ Dose Whole Body Dose [aqe group] (mrem/vr) (mrem/yr)

Fish Cs-137 Liver [Teen] 4.28E-02 2.69E-02 Broad leaf Cs-137 Bone [Child] 1.01 E-01 5.44E-02 Grapes Cs-137 Bone (Child) 5.63E-01 1.23E-01 Donald C. Cook Nuclear Plant Annual Environmental Operating Report 2016 6.0

SUMMARY

OF REMP, ODCM, AND VENDOR PROCEDURE CHANGES The ODCM was not revised in 2016. The following changes were made to the REMP procedures in 2016: Procedure No.: 12-THP-6010-RPP-635 Rev. No.: 7 Title: Collection of Milk Samples Alteration Justification Step 5.1 -Changed the procedure name Removing the words Grape eases the referenced from "Grape" to "Food Products." specificity of sampling.

Aligns procedure with wording in NUREG 1301 and Branch Technical Position which say "Food Products".

AR 2016-8561 Step 7 .1.2 -Changed the procedure name Removing the words Grape eases the referenced from "Grape" to "Food Products." specificity of sampling.

Aligns procedure with wording in NUREG 1301 and Branch Technical Position which say "Food Products".

AR 2016-8561 Procedure No.: 12-THP-6010-RPP-638 Rev. No.: 10 Title: Collection of Food Products and Broadleaf Samples Alteration Justification Header: Title changes from "Grape" samples To remove focus of grape vegetative samples. to "Food Products." AR 2016-8561 Step 1.1 -Changed "grape" samples to "food To remove focus of grape vegetative samples. products" samples. 2016-8561 Step 4.1.2 -First bullet, changes "grape" To remove focus of grape vegetative samples. samples to "food products" samples. 1\R 2016-8561

-67 Donald C. Cook Nuclear Plant Annuai Radiological Environmental Operating Report 2016 Procedure No.: 12-THP-6010-RPP-643 Rev. No.: 10 -----Title: Quarterly Review of Radiological Environmental Monitoring Program (REMP) Data Alteration Justification Step 4.2.8 -Changed the word "grape" to Removing the words Grape eases the "food product." specificity of sampling.

Aligns procedure with lwording in NUREG 1301 and Branch Technical Position which say "Food Products". 2016-8561 Reference 7.2.1.k-Changed the word "grape" Removing the words Grape eases the to "food products." specificity of sampling.

Aligns procedure with !wording in NUREG 1301 and Branch Technical Position which say "Food Products". 2016-8561 There were no revisions to procedures for the Environmental Dosimetry Company in 2016. -68 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table 6.1 below summarizes the changes made by GEL Laboratories during 2016 to the procedures that are used for the Donald C. Cook Nuclear Plant REMP. Table 6.1 GEL 2016 Procedure Changes Sop# Rev Sop Title Issue DIRR Date Type GL-CHL-B-025 1 BWXT Pantex QC Package Checklist 18-Mar-16 Change GL-CHL-SR-001 2 Sample Receipt and Review Form 22-Mar-16 Revision GL-CHL-SR-002 0 Survey Release Form 29-Apr-16 New Document GL-CHL-SR-003 0 GEL Sample Label Reference 13-May-16 New Document GL-CO-E-002 6 Delegated Authority to Commit the Company 4-Feb-16 Revision GL-CO-E-002 7 Delegated Authority to Commit the Company 10-Mar-16 Revision Internal Review of Contractually Required Quality GL-CS-E-002 9 Criteria for Client Package Delivery 19-May-16 Revision GL-CS-E-005 8 Electronic Data Deliverables 18-Apr-16 Revision GL-CS-E-008 2 Prelogin, Login, and Login Review 21-Mar-16 Revision GL-CS-M-001 7 Project Management Alpha LI MS Manual 14-Sep-16 Revision GL-DC-E-001 17 Document Control 9-Jun-16 Revision GL-FS-E-003 7 Field Dissolved Oxygen 16-Aug-16 Revision GL-GC-E-008 21 pH 28-Sep-16 Revision GL-GC-E-009 11 Conductivity and Salinity 26-Jan-16 Revision GL-GC-E-009 12 Conductivity and Salinity 28-Sep-16 Revision GL-GC-E-011 13 Total Solids 29-Sep-16 Revision GL-GC-E-027 12 Pensky-Martens Closed Cup Flashpoint 10-Aug-16 Deletion GL-GC-E-028 23 Carbonaceous Biochemical Oxygen Demand (CBOD) 19-Jul-16 Revision Alkalinity:

Total, Bicarbonate, Carbonate, GL-GC-E-033 12 Hydroxide, and Phenolphthalein 26-Aug-16 Revision GL-GC-E-037 14 Turbidity 21-Nov-16 Revision GL-GC-E-040 15 Pretreatment of Cyanide Amenable to Chlorination 15-Mar-16 Revision GL-GC-E-047 19 Methylene Blue Active Substance 17-Feb-16 Revision GL-GC-E-047 19 Methylene Blue Active Substance 19-May-16 Revision GL-GC-E-048 10 Heating Value Determination by Bomb Calorimeter 17-Feb-16 Revision GL-GC-E-048 11 Heating Value Determination by Bomb Calorimeter 25-Mar-16 Revision GL-GC-E-050 13 Threshold Odor 26-Apr-16 Deletion GL-GC-E-052 7 Sulfide (Methylene Blue Method) 19-May-16 Revision GL-GC-E-052 8 Sulfide (Methylene Blue Method) 28-Sep-16 Revision Volatile Solids and % Ash Procedure for Solid and GL-GC-E-058 11 Semisolid Samples 25-Aug-16 Revision -69 Donald C. Cook Nuclear Plant Annuai Radiological Environmental Operating Report 2016 Sop# Rev Sop Title Issue DIRR Date Type GL-GC-E-061 19 Chemical Oxygen Demand (COD) -Digestion 28-Sep-16 Revision Reactor Method Total Carbon and Total Organic Carbon Analysis Using GL-GC-E-062 16 the Dohrmann DC-190 Boat Sampler 29-Jan-16 Revision GL-GC-E-067 21 Cyanide Sample Distillation 25-Mar-16 Revision GL-GC-E-069 11 Reactive Cyanide and Sulfide 23-May-16 Revision GL-GC-E-076 13 Total Residual Chlorine 23-Jun-16 Revision GL-GC-E-076 13 Total Residual Chlorine 19-Jul-16 Revision GL-GC-E-077 11 Cyanide Weak Acid Dissociable Sample Preparation 15-Mar-16 Revision and Analysis GL-GC-E-079 8 Bomb Preparation Method for Solid Waste 28-Sep-16 Revision GL-GC-E-090 11 Acidity 28-Sep-16 Revision Total, Total Inorganic, and Total Organic Carbon (TOG) GL-GC-E-093 13 Using the 01 Analytical Model 1010 TOG Analyzer 22-Jan-16 Revision -70 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016

7.0 REFERENCES

1. US NRC 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 2015 Land Use Census (LUC), included in Appendix B of the Annual Radiological Environmental Operating Report of 2015, contained an error. The Dairy Farm Survey states that "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".

The correct distance is eight (8) kilometers.

The 2016 LUC is correct. -71 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 APPENDIX A SYNOPSIS OF ANALYSIS TECHNIQUES A-1 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 pCj/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 characteristics, 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 2016 Iodate carrier is added to an acidified sample and, after reduction with sodium sulfate (Na 2 S0 4) to iodide, the 1-131 is precipitated with silver nitrate (AgN0 3). The precipitate is dissolved and purified with Zinc powder and sulphuric acid (H 2 S0 4) and the solution is re-precipitated as palladium iodide (Pdl2), 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 sodium hydroxide (NaOH) and potassium permanganate (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 2016 APPENDIX B 2016 LAND USE CENSUS B-1 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 2016 Radiological Environmental Monitoring Program Land Use Census Summary Date: September 30, 2016 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.

Details were documented in Data Sheet 1, Land Use Census, of CNP procedure 12-THP-6010-RPP-640, Land Use Census. A summary of the 2016 LUC is detailed below. Dairy Farm Survey A dairy farm survey was conducted from August 29 through September 30, 2016, to update the following information:

e 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.

During the survey period, no new dairy farms were identified within Berrien County. Currently, there are zero (0) indicator (within eight km 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 km of CNP) milk farms/residences are needed to support the milk sampling program. Due to the lack of dairy farms/residences within the specified distance and the one identified farm declining to participate 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) Sector/Distance from CNP: G and HI 4.1 miles (21,648 feet) 2791 Snow Rd. Baroda, Ml 49101 B-2 Donald C. Cook Nuclear Plant Annual Radiological Environmental Op_erating Report 2016 Livestock for Consumption Survey During the time period August 29 through September 30, 2016, 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, one new farm which support livestock (beef and/or goats) operations was identified in Sector D. That farm is listed here: Siri Stacey (Goats), Sector /Distance from CNP: D/ 2.628 miles (13,874 feet) 7368 Holden Rd. Stevensville, Ml 49127, The location, which was determined to be the "Closest Livestock for Consumption (meat)," did not change from the 2015 report. Robert Mast Farm Sector/Distance from CNP: F / 1.41 miles ( 7 ,445 feet) Livingston Rd. Bridgman, Ml 49106 Residential Land Use Survey From June 1, 2015 to June 1, 2016, 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. Garden Census, Grape and Broadleaf Sampling During the time period August 29 through September 30, 2016, a survey of nearby properties verified that the garden located at 7379 Rosemary Rd. (0.91 miles [4,805 feet] from CNP), in Sector C, is still the "Closest Garden ProducingFresh-Leafy\/egetabfeS:" ____ -----------------------In lieu of conducting the Garden Census as part of this LUC, 2016 Broadleaf Sampling was performed per the requirements of the ODCM and in accordance with 12-THP-601 O-RPP-638, Collection of Food Products and Broadleaf Samples. B-3 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Notifications and Updates The 2016 Land Use Census identified no relevant changes in usage to areas surrounding CNP. The .identified changes in this report have been evaluated per PMP-601 O-OSD-001 Off-Site Dose Calculation Manual, and represent no changes in dose commitment.

B-4 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 APPENDIX C QuaUty Assurance Program C-1 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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-B-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 quality assurance program for the proficiency testing (PT) and environmental monitoring aspects of GEL for 2016. GEL's QA Program is designed to monitor the quality of analytical processing associated with environmental, radiobioassay, effluent (1 O CFR Part 50), and waste (10 CFR Part 61) sample analysis.

This summary was extracted from GEL Laboratories report entitled "2016 Annual Quality Assurance Report for the Radiological Environmental Monitoring Program (REMP), dated March 29, 2017, and includes:

a Intra-laboratory QC results analyzed during 2016.

Inter-laboratory QC results analyzed during 2016 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 m 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 studies 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 with the NPDES monitoring program. Participation is mandatory for all holders of C-2 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 (MRaDŽ). This program is for labs seeking certification for radionuclides in wastewater and solid waste. The program is conducted in strict compliance with US EPA National Standards for Water Proficiency 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 US 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.

e ERA's Water Supply (WS) biannual program for drinking water methodologies includes parameters for organic and inorganic analytes.

Environmental Cross-Check Program administered by Eckert & Ziegler Analytics, Inc. This program 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 NRC 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 2016 Quality Assurance 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.

Type 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: e TNI, The NELAC Institute, National Environmental Laboratory Accreditation Program (NE LAP)

DOECAP, U.S. Department of Energy Consolidated Audit Program

DOELAP, U.S. Department of Energy Laboratory Accreditation Program a DOE QSAS, U.S. Department of Energy, Quality Systems for Analytical Services e 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 (16-RAD-001) was conducted in May, 2016. Two (2) findings, six (6) observations, and five (5) recommendations resulted from this assessment.

By July, 2016, the findings were 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 laboratory programs that already have established performance criteria for bias (i.e., MAPEP, and ERNELAP), 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 (i.e. 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 2016 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 0 -20%, for activity levels exceeding the contract required detection limit (CRDL). Quality Control Program for Environmental Sample Analysis GEL's internal QA Program is designed to include QC functions such as instrumentation calibration checks (to insure 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. GEL1s 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 2016 GEL's laboratory 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% 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 2016, fifty-five (55) 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 2016. Of the five hundred one (501) total results reported, 98.6% (494 of 501) were found to be acceptable.

The list below contains the type of matrix evaluated by GEL:

Air Filter e Cartridge

.. Water

Milk

Soil .. Liquid Q Vegetation A summary list of all inter-laboratory radiological proficiency test 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 twenty-eight (128) 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 acceptance criteria ( 100%). Table C-2 list the results specific to the Eckert & Ziegler Analytics sample provided in 2016. No corrective action reports were noted for these results. C-6 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Summary of Participation in the MAPEP Monitoring Program MAPEP Series 34 and 35 were analyzed by the laboratory.

Of the one hundred twenty-six (126) analyses, 98.4% (126 out of 128) of all results fell within the PT provider's acceptance criteria.

Two analytical failures occurred:

lron-55 in soil and Radium-226 in water. For the corrective measures associated with MAPEP Series 34, refer to CARR 160602-1025 which is detailed in Table C-5. Summary of Participation in the ERA MRaD PT Program The ERA MRad program provided samples (MRAD-24 and MRAD-25) for one hundred four (194) individual environmental analyses.

Of the one hundred ninety-four (194) analyses, 99.4% (193 out of 194) fell within the PT provider's acceptance criteria.

One analytical failure occurred:

Total Uranium in water.

For the corrective actions associated with MRAD-24, refer to CARR 160519-1015 which is detailed in Table C-5. Summary of Participation i111 the ERA PT Program The ERA program provided samples (RAD-104, RAD-105, RAD-106 and QR030716U) one (51) individual environmental analyses.

Of the 51 analyses, 92.1 % (47 out of 51) of all results fell within the PT provider's acceptance criteria.

Isotope failures included:

Cesium-137 and Strontium-89.

For the corrective actions associated with isotope failures refer to corrective actions CARR 160229-1005, and CARR 160830-1052 (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 standard operating procedures (SOP). The other is formal corrective action documented by the Quality Systems (QS) Team in accordance with GEL's 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 GE L'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 show that the results C-7 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 have been impacted, affected clients will be informed of the issue in writing within five (5) calendar days of the disco\lery.

Table C-5 provides the status of CARRs for radiological performance testing during 2016. 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 2016 Table C-1 2016 Inter-Laboratory Radiological Proficiency Testing Results and Acceptance Criteria ..... .. . *Report ...........

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Date. . .. .. .. ' . .. . *.:" . ..' . *-. . EZA 4th/2015 2/18/2016 E11412 Cartridge pCi lodine-131 7.73E+01 7.98E+01 0.97 Acceptable EZA 4th/2015 2/18/2016 E11413 Milk pCi/L Strontium-89 9.41 E+01 8.68E+01 1.08 Acceptable EZA 4th/2015 2/18/2016 E11413 Milk pCi/L Strontium-90 9.74E+OO 1.25E+01 0.78 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L lodine-131 1.01 E+02 9.12E+01 1.11 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Cerium-141 1.36E+02 1.29E+02 1.06 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Chromium-51 2.79E+02 2.81E+02 0.99 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Cesium-134 1.45E+02 1.60E+02 0.91 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Cesium-137 1.15E+02 1.15E+02 1.00 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Cobalt-58 1.06E+02 1.10E+02 0.96 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Manganese-54 1.53E+02 1.45E+02 1.06 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L lron-59 1.19E+02 1.08E+02 1.10 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Zinc-65 2.69E+02 2.48E+02 1.08 Acceptable EZA 4th/2015 2/18/2016 E11414 Milk pCi/L Cobalt-60 2.12E+02 2.13E+02 0.99 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L lodine-131 1.05E+02 9.26E+01 1.13 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Cerium-141 1.27E+02 1.12E+02 1.14 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Chromium-51 2.60E+02 2.44E+02 1.07 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Cesium-134 1.25E+02 1.39E+02 0.90 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Cesium-137 1.12E+02 9.95E+01 1.13 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Cobalt-58 9.73E+01 9.56E+01 1.02 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Manganese-54 1.41 E+02 1.26E+02 1.12 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L lron-59 1.11 E+02 9.34E+01 1.19 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Zinc-65 2.43E+02 2.15E+02 1.13 Acceptable EZA 4th/2015 2/18/2016 E11415 Water pCi/L Cobalt-60 1.92E+02 1.85E+02 1.04 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Barium-133 94.1 90.5 76.2-99.6 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Cesium-134 24.0 23.2 17.7 -25.9 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Cesium-137 72.6 59.1 53.2 -67.8 Not Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Cobalt-60 85.3 83.4 75.1 -94.1 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Zinc-65 118 102 91.8-122 Acceptable ERA 1st/ 2016 2/25/2016 8AD-104 Water pCi/L Gross Alpha 91.1 72.8 38.3-89.7 Not Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Gross Alpha 92.1 72.8 38.3-89.7 Not Acceptable C-9 ----*--*--*-------------

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_*:' *,-" ,, -' ' --ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Gross Beta 20.0 17.8 10.2 -26.0 Acceptable ERA 1st/2016 2/25/2016 RAD-104 Water pCi/L Radium-226 11.0 10.0 7.49-11.7 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Radium-226 11.6 10.0 7.49-11.7 Acceptable ERA 1st/2016 2/25/2016 RAD-104 Water pCi/L Radium-226 10.7 10.0 7.49 -11.7 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Radium-228 1.99 2.21 1.02 -3.52 Acceptable ERA 1st/2016 2/25/2016 RAD-104 Water pCi/L Radium-228 2.20 2.21 1.02 -3.52 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Radium-228 1.99 2.21 1.02 -3.52 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Uranium (Nat) 66.9 67.1 54.6 -74.4 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Uranium (Nat) 65.5 67.1 54.6 -74.4 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water µg/L Uranium (Nat) mass 99.9 97.9 79.7 -109 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Tritium 11700 12100 10500 -13300 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Strontium-89 55.8 68.0 55.4 -76.2 Acceptable ERA 1st/ 2016 2/25/2016 RAD-104 Water pCi/L Strontium-90 44.7 43.4 32.0 -49.8 Acceptable ERA 1st/2016 2/25/2016 RAD-104 Water pCi/L lodine-131 24.6 25.1 20.8 -29.7 Acceptable ERA 1st/2016 2/25/2016 RAD-104 Water pCi/L lodine-131 24.2 25.1 20.8 -29.7 Acceptable ERA 1st/ 2016 3/14/2016 QR030716U Water pCi/L Cesium-137 156 157 141-175 Acceptable EZA 1st/2016 05/16/15 E11445 Cartridge pCi lodine-131 9.39E+01 8.86E+01 1.06 Acceptable EZA 1st/2016 05/16/15 E11446 Milk pCi/L Strontium-89 8.16E+01 8.67E+01 0.94 Acceptable EZA 1st/2016 05/16/15 E11446 Milk pCi/L Strontium-90 1.08E+01 1.14E+01 0.95 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L lodine-131 9.41 E+01 8.22E+01 1.15 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Cerium-141 1.05E+02 9.84E+01 1.07 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Chromium-51 2.69E+o2 2.43E+02 1.11 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Cesium-134 1.13E+02 1.30E+02 0.87 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Cesium-137 1.64E+02 1.61E+02 1.02 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Cobalt-58 1.16E+02 1.17E+02 0.99 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Manganese-54 1.24E+02 1.17E+02 1.06 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L lron-59 1.47E+02 1.31E+02 1.12 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Zinc-65 1,98E+02 1.79E+02 1-11 Acceptable EZA 1st/2016 05/16/15 E11447 Milk pCi/L Cobalt-60 2.59E+02 2.44E+02 1.06 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L lodine-131 9.92E+01 9.67E+01 1.03 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L Cerium-141 1.40E+02 1.39E+02 1.01 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L Chromium-51 3.95E+02 3.66E+02 1.08 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L Cesium-134 1.12E+02 1.26E+02 0.89 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L Cesium-137 1.69E+02 1.67E+02 1.01 Acceptable C-10 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 PT *auarter I Report* Sample GEL, -Known* Acceptance Provider ---Year Received Sample Number ._*Media Unit .Analyte I Value value Range/ Ratio . Evaluation

-Date. EZA 1st/2016 05/16/15 E11448 Water pCi/L Cobalt-58 1.78E+02 1.80E+02 0.99 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L Manganese-54 1.66E+02 1.59E+02 1.05 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L lron-59 2.14E+02 1.95E+02 1.01 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L Zinc-65 3.25E+02 2.99E+02 1.09 Acceptable EZA 1st/2016 05/16/15 E11448 Water pCi/L Cobalt-60 3.23E+02 3.28E+02 0.98 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Niobium-95 4.01E+03 3.62E+03 1.11 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Zirconium-95 9.79E+03 9.48E+03 1.03 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Tc-99M 1.34E+03 1.32E+03 1.02 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Ruthenium-103 6.33E+03 6.23E+03 1.02 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L lodine-131 4.64E+03 4.83E+03 0.96 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L lodine-132 1.39E+03 1.62E+03 0.86 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Tellurium-132 1.81 E+03 1.50E+03 1.21 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Cesium-137 7.79E+01 7.31E+01 1.07 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Barium-140 1.89E+04 1.85E+04 1.02 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Lanthanum-140 2.11E+04 2.06E+04 1.03 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Cerium-141 1.43E+04 1.39E+04 1.03 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Cerium-144 2.20E+03 2.08E+03 1.06 Acceptable EZA 1st/2016 05/16/15 E11449 Water pCi/L Neodymium-147 6.40E+03 6.19E+03 1.03 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-GrF34 Filter Sq/sample Gross Alpha 1.41 1.20 0.36-2.04 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-GrF34 Filter Sq/sample Gross Beta 0.897 0.790 0.40-1.19 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Americium-241 111 103.0 72-134 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Cesium-134 953 1030 721-1339 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Cesium-137 2.57 False Pos Test Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Cobalt-57 1030.000 992 694-1290 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Cobalt-60 1270 1190 833-1547 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg lron-55 197 428 300-556 Not Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Manganese-54 1230 1160 812-1508 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Nickel-63 1240 1250 875-1625 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Plutonium-238 60.1 63.6 44.5-82.7 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Plutonium-239/240 1.15 0.21 Sens. Eval. Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Potassium-40 680 607 425-789 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Strontium-90

-3.40 False Pos Test Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Technetium-99 32 False Pos Test Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg U-234/233 49.0 45.9 32.1-59.7 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Uranium-238 143 146 102-190 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaS34 Soil Bq/Kg Zinc-65 785.0 692 484-900 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Americium-241 0.0113 False Pos Test Acceptable C-11 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 **' PT .. * . : Report -* ** * **-. *** ... *

Ji , '.-.sam.*p*

1_e . .-. * -** .* . Received*:'.

" , '.

N1,1m!)er

_. _ M.ed.ia Provider ' Year_. '* 1 -Date .. _ _ ' '-* ._. Unit * ..

,, . , Known-' "Value ' ... __ value GEL :-.... 1 ;

* , .. { .Ran9ef,Ratio .

Ev,aluaticm MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Cesium-134 15.0 16.1 11.3-20.9 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Cesium-137 21.8 21.2 14.8 -27.6 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Cobalt-57 0.000 False Pas Test Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Cobalt-60 12.2 11.8 8.3-15.3 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Hydrogen-3 0.878 False Pas Test Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L lron-55 18.3 16.2 11.3-21.1 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Manganese-54 11.4 11.1 7.8 -14.4 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Nickel-63 12.0 12.3 8.6 -16.0 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Plutonium-238 1.14 1.244 0.871 -1.617 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Plutonium-239/240 0.586 0.641 0.449 -0.833 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Potassium-40 272 251 176 -326 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Radium-226 1.45 0.718 0.503

-0.933 Not Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Strontium-90 7.12 8.74 6.12-11.36 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Technetium-99 0.0453 False Pas Test Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Uranium-234/233 1.37 1.48 1.04-1.92 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Uranium-238 1.43 1.53 1.07-1.99 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-GrW34 Water Bq/L Zinc-65 14.3 13.6 9.5 -17.7 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L Gross Alpha 0.957 0.67 0.202-1.144 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-XaW34 Water Bq/L Gross Beta 2.390 2.150 1.08-3.23 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-MaW34 Water Bq/L lodine-129 4.00 3.85 2.70-5.01 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter ug/sample Uranium-235 0.091 0.101 0.071-0.131 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter ug/sample Uranium-238 13.9 13.8 9.7-17.9 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter ug/sample Uranium-Total 14.0 13.9 9.7 -18.1 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Americium-241 0.0751 0.0805 0.0564 -0.1047 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Cesium-134

-0.0349 False Pas Test Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Cesium-137 2.37 2.30 1.61 -2.99 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Cobalt-57 3 2.94 2.06 -3.82 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Cobalt-60 4.17 4.02 2.81 -5.23 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Manganese-54 4.60 4.53 3.17 -5.89 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Plutonium-238 0.0593 0.0637 0.0446 -0.0828 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Plutonium-239/240 0.0889 0.099 0.069 -0.129 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Strontium-90 1.01 1.38 0.97 -1.79 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Uranium-234/233 0.170 0.165 0.116-0.215 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Uranium-238 0.179 0.172 0.120 -0.224 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-RdF34 Filter Sq/sample Zinc-65 3.52 3.57 2.50 -4.64 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Americium-241 0.101 0.089 0.062 -0.116 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Cesium-134 9.49 10.62 7.43-13.81 Accemtable MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Cesium-137 5.50 5.62 3.93 -7.31 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Cobalt-57 12.0 11.8 8.3 -15.3 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Cobalt-60

-0.0339 False Pas Test Acceptable C-12 I_

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 . PT Quarter I Report Sample GEL Known Acceptance . Provider.

Year Received Sample Numb.er. Media .Unit 'Analyte l Nuclide Value value Range/ Ratio Evaluation Date MA PEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Manganese-54

-0.00655 False Pas Test Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Plutonium-238 0.0929 0.105 0.074-0.137 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Plutonium-239/240 0.0801 0.092 0.064

-0.120 Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Strontium-90

-0.00648 False Pas Test Acceptable MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Uranium-234/233 0.204 0.196 0.137-0.255 Accept9ble MAPEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Uranium-238 0.225 0.204 0.143 -0.265 Acceptable MA PEP 2nd/2016 06/02/16 MAPEP-16-Rv34 Vegetation Sq/sample Zinc-65 10.3 9.6 6.7 -12.5 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Actinium-228 1320 1240 795 -1720 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Americium-241 1410 1360 796 -1770 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Sismuth-212 1220 1240 -330 -1820 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Sismuth-214 4130 3530 2130 -5080 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Cesium-134 3500 3450 2260 -4140 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Cesium-137 4510 4310 3300 -5550 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Cobalt-60 5760 5490 3710 -7560 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Lead-212 1360 1240 812 -1730 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Lead-214 4590 3710 2170 -5530 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Manganese-54

<54.7 <1000 <1000 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Plutonium-238 585 658 396 -908 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Plutonium-239 477 496 324-685 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Potassium-40 10900 10600 7740 -14200 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Strontium-90 7120 8560 3260 -13500 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Thorium-234 3590 3430 1080 -6450 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-234 3940 3460 2110 -4430 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-234 2334 3460 2110 -4430 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-234 3460 3460 2110 -4430 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-238 3540 3430 2120 -4350 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-238 2757 3430 2120 -4350 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-238 3340 3430 2120 -4350 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-Total 7428 7050 3820 -9300 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-Total 5091 7050 3820 -9300 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Uranium-Total 7214 7050 3820 -9300 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil µg/kg Uranium-Total (mass) 10600 10300 5680 -13000 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil µg/kg Uranium-Total (mass) 9790 10300 5680 -13000 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil µg/kg Uranium-Total (mass) 8450 10300 5680 -13000 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil µg/kg Uranium-Total (mass) 9370 10300 5680 -13000 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil µg/kg Uranium-Total (mass) 9790 10300 5680 -13000 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Soil pCi/kg Zinc-65 2730 2450 1950 -3260 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Americium-241 2240 2120 1300 -2820 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Cesium-134 1070 1070 687 -1390 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Cesium-137 941 838 608 -1170 Acceptable C-13 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 . . . ' . -. . ..

1'

** .. .. *1'* . . .. . . , . ... .*._ ..... . **-PT-**-***

sample:, *I-* .. .-*.. " ... GEL -' .. . .

P.cceptance

... Received . ** * . :c **-* ** .. ... *Unit. * :Al}'alYte/

Nuclide .* *-... Known . ,* '"-Evaluation

.. prov icier} -.-..* *year'*** "Media** Value . *' '.(aiue * 'Range/Ratio

.*. ' *oate *.* .*. ',* ,,c* _,-, ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Cobalt-60 1300 1100 759-1540 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Curium-244 1310 1560 764 -2430 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Manganese-54

<34.1 <300 <300 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Plutonium-238 2620 2810 1680 -3850 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Plutonium-239 3360 3640 2230 -5010 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Potassium-40 38100 31000 22400 -43500 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Strontium-90 8370 8710 4960 -11500 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Uranium-234 4320 4160 2740 -5340 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Uranium-238 4430 4120 2750 -5230 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Uranium-Total 9040 8470 5740 -10500 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation

µg/kg Uranium-Total (mass) 12500 12400 8310-15700 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation

µg/kg Uranium-Total (mass) 13300 12400 8310-15700 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Vegetation pCi/kg Zinc-65 3700 2820 2030 -3960 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Americium-241 44.2 45.9 28.3 -62.1 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Cesium-134 254 304 193 -377 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Cesium-137 1060 1150 864-1510 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Cobalt-60 576 623 482-778 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter lron-55 94.9 126 39.1 -246 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Manganese-54

<3.61 <50.0 <50.0 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Plutonium-238 60.8 70.5 48.3 -92.7 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Plutonium-239 46.9 54.8 39.7 -71.6 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Strontium-90 141 150 73.3-225 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Uranium-234 63.1 64.8 40.2 -97.7 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Uranium-234 54.2 64.8 40.2 -97.7 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Uranium-238 51.4 64.2 41.5-88.8 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Uranium-238 56.9 64.2 41.5 -88.8 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Uranium-Total 117 132 73.1 -201 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Uranium-Total 114 132 73.1 -201 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter µg/Filter Uranium-Total (mass) 156 192 123 -270 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter µg/Filter Uranium-Total (mass) 171 192 123 -270 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter µg/Filter Uranium-Total (mass) 154 192 123 -270 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter µg/Filter Uranium-Total (mass) 156 192 123 -270 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Zinc-65 358 356 255 -492 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Gross Alpha 79.5 70.1 23.5 -109 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Gross Beta 63.5 54.4 34.4 -79.3 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Filter pCi/Filter Gross Beta 63.5 54.4 34.4 -79.3 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Americium-241 134 121 81.5-162 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Cesium-134 813 842 618-968 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Cesium-137 1110 1100 934 -1320 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Cobalt-60 1090 1050 912 -1230 Acceptable C-14 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 . ' *Report PT C}uarter I *Received

$ample Number Sample . Unit . Analyte l Nuclide GEL Known Acceptance*

Evaluation Provider Year Date Media Value value Range/ Ratio ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L lron-55 1630 1650 984-2240 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Manganese-54

<6.38 <100 <100 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Plutonium-238 126 138 102 -172 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Plutonium-239 88.2 98.7 76.6 -124 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Strontium-90 472 434 283-574 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-234 59.3 52.7 39.6 -68.0 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-234 49.9 52.7 39.6 -68.0 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-234 49.8 52.7 39.6 -68.0 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-238 54.1 52.3 39.9 -64.2 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-238 53.7 52.3 39.9 -64.2 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-238 49.1 52.3 39.9-64.2 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-Total 110.7 107 78.6 -138 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-Total 158 107 78.6 -138 Not Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-Total 106.4 107 78.6 -138 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Uranium-Total 103.9 107 78.6 -138 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water µg/L Uranium-Total (mass) 160.9 157 125 -190 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water µg/L Uranium-Total (mass) 147 157 125. 190 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water µg/L Uranium-Total (mass) 161 157 125-190 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Zinc-65 1130 1010 842 -1270 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Gross Alpha 160 117 41.5-181 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Gross Beta 79.3 75.5 43.2 -112 Acceptable ERA 2nd/2016 05/13/16 MRAD-24 Water pCi/L Tritium 8470 8650 5800 -12300 Acceptable ERA 2nd/2016 05/23/16 RAD-105 Water pCi/L Cesium-137 81.5 78.4 70.6 -88.9 Acceptable ERA 2nd/2016 05/23/16 RAD-105 Water pCi/L Gross Alpha 72.6 62.7 32.9-77.8 Acceptable ERA 2nd/2016 05/23/16 RAD-105 Water pCi/L Gross Alpha 74 62.7 32.9 -77.8 Acceptable ERA 2nd/2016 05/23/16 RAD-105 Water pCi/L lodine-131 27.9 26.6 22.1 -31.3 Acceptable EZA 2nd/2016 07/27/16 E11573 Cartridge pCi lodine-131 9.52E+01 8.94E+01 1.07 AcceptCJble EZA 2nd/2016 07/27/16 E11574 Milk pCi/L Strontium-89 8.51E+01 9.44E+01 0.90 Acceptable EZA 2nd/2016 07/27/16 E11574 Milk pCi/L Strontium-90 9.49E+01 1.54E+02 0.62 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L lodine-131 9.77E+01 9.45E+01 1.03 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Cerium-141 1.46E+02 1.39E+02 1.05 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Chromium-51 2.53E+02 2.76E+02 0.92 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Cesium-134 1.62E+02 1.74E+02 0.93 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Cesium-137 1.20E+02 1.20E+02 1.00 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Cobalt-58 1.39E+02 1.42E+02 0.98 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Manganese-54 1.26E+02 1.25E+02 1.00 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L lron-59 1.25E+02 1.22E+02 1.03 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Zinc-65 2.47E+02 2.35E+02 1.05 Acceptable EZA 2nd/2016 07/27/16 E11575 Milk pCi/L Cobalt-60 1.72E+02 1.73E+02 1.00 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L lodine-131 1.02E+02 9.67E+01 1.05 Acceptable C-15 -----1 I Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 *: **-. .,. ..

.' :-'. . .. ... .. .. . ; ' .. .. PT**-* . **Quarter i * .. *

1. **;sample

-Analyte'/.

Nuclide .. GEL, Known :: -1

.. Eyaluatio11:

.. ' * '* Year * * .. '.,'.Received.. . *Unit ** Vah,!e .. value , . > Ran'ge{.Ratio

.. . Provider.

bate.* .. * ... iVJ.edi.a

.. ** -. . . .. .. . . _, .... . . . . EZA 2nd/2016 07/27/16 E11576 Water pCi/L Cerium-141 1.56E+02 1.47E+02 1.06 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L Chromium-51 3.33E+02 2.92E+02 1.14 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L Cesium-134 1.65E+02 1.85E+02 0.89 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L Cesium-137 1.34E+02 1.28E+02 1.05 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L Cobalt-58 1.47E+02 1.51E+02 0.98 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L Manganese-54 1.45E+02 1.33E+02 1.09 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L lron-59 1.54E+02 1.29E+02 1.19 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L Zinc-65 2.72E+02 2.49E+02 1.09 Acceptable EZA 2nd/2016 07/27/16 E11576 Water pCi/L Cobalt-60 1.99E+02 1.83E+02 1.09 Acceptable ERA 3rd/ 2016 08/30/16 RAD-106 Water pCi/L Barium-133 86.2 82.9 69.7 -91.2 Acceptable ERA 3rd/ 2016 08/30/16 RAD-106 Water pCi/L Cesium-134 62.3 65.3 53.1 -71.8 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Cesium-137 99.3 95.2 85.7 -107 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Cobalt-60 123 117 105-131 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Zinc-65 118 113 102 -134 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Gross Alpha 42.5 48.1 25.0 -60.5 Acceptable ERA 3rd/ 2016 08/30/16 RAD-106 Water pCi/L Gross Alpha 48.7 48.1 25.0 -60.5 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Gross Beta 27.3 28.6 18.2 -36.4 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Radium-226 10.4 12.3 9.18 -14.2 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Radium-226 10 12.3 9.18 -14.2 Acceptable ERA 3rd/2016 08/30/16 RAD -106 Water pCi/L Radium-226 11.3 12.3 9.18-14.2 Acceptable ERA 3rd/ 2016 08/30/16 RAD-106 Water pCi/L Radium-228 5.89 5.75 3.51 -7.57 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Radium-228 5.53 5.75 3.51 -7.57 Acceptable ERA 3rd/2016 08/30/16 RAD -106 Water pCi/L Uranium (Nat) 36.4 35.2 28.4 -39.3 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Uranium (Nat) 34.2 35.2 28.4 -39.3 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water µg/L Uranium (Nat) mass 51.1 51.3 41.4 -57.3 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water µg/L Uranium (Nat) mass 55.6 51.3 41.4-57.3 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Tritium 11600 12400 10800 -13600 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Strontium-89 56.9 53.3 42.3 -60.9 Acceptable ERA 3rd/2016 08/30/16 RAD -106 Water pCi/L Strontium-89 62.8 53.3 42.3 -60.9 Not Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Strontium-90 39.1 39.2 28.8 -45.1 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L Strontium-90 35.1 39.2 28.8 -45.1 Acceptable ERA 3rd/ 2016 08/30/16 RAD -106 Water pCi/L lodine-131 27.3 24.9 20.7 -29.5 Acceptable ERA 3rd/ 2016 08/30/16 RAD-106 Water pCi/L lodine-131 25.2 24.9 20.7 -29.5 Acceptable EZA 3rd/2016 11/28/16 E11605 Cartridge pCi lodine-131 6.33E+01 6.01 E+01 1.05 Acceptable EZA 3rd/2016 11/28/16 E11606 Milk pCi/L Strontium-89 7.60E+01 9.09E+01 0.84 Acceptable EZA 3rd/2016 11/28/16 E11606 Milk pCi/L Strontium-90 1.17E+01 1.37E+01 0.85 A(::ceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L lodine-131 7.53E+01 7.19E+01 1.05 Acceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L Cerium-141 9.85E+01 9.32E+01 1.06 Acceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L Chromium-51 2.63E+02 2.36E+02 1.12 Acceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L Cesium-134 1.21 E+02 1.36E+02 0.89 Acceptable C-16 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 PT *Quarter I Report*

Number Sample GEL Known Acceptance

. Provider*

Year * .* .*.* Received Media Unit An<1lyte I Nuclide* Value value Range/ Ratio . Evaluation . Date. ,. EZA 3rd/2016 11/28/16 E11607 Milk pCi/L Cesium-137 1.19E+02 1.19E+02 1.00 Acceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L Cobalt-58 9.56E+01 9.74E+01 0.98 Acceptable EZA 3rd/2016 11/28/16 E11607 'Milk pCi/L Manganese-54 1.61 E+02 1.52E+02 1.06 Acceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L lron-59 9.00E+01 9.06E+01 0.99 Acceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L Zinc-65 2.11E+02 1.79E+02 1.18 Acceptable EZA 3rd/2016 11/28/16 E11607 Milk pCi/L Cobalt-60 1.44E+02 1.35E+02 1.07 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L lodine-131 5.53E+01 4.90E+01 1.13 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Cerium-141 9.49E+01 8.52E+01 1.11 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Chromium-51 2.03E+02 2.15E+02 0.95 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Cesium-134 1.20E+02 1.24E+02 0.97 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Cesium-137 1.15E+02 1.08E+02 1.06 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Cobalt-58 9.54E+01 8.90E+01 1.07 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Manganese-54 1.47E+02 1.39E+02 1.06 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L lron-59 8.73E+01 8.28E+01 1.05 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Zinc-65 1.79E+02 1.63E+02 1.10 Acceptable EZA 3rd/2016 11/28/16 E11068 Water pCi/L Cobalt-60 1.26E+02 1.23E+02 1.02 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Americium-241

-0.563 0 False Pos Test Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Cesium-134 3.74 0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Cesium-137 1180 1067 747-1387 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Cobalt-57 1220 1190 833-1547 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Cobalt-60 889 851 596-1106 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg lron-55 -337 0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Manganese-54 2.50 0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Nickel-63 1090 990 693-1287 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Plutonium-238 69.0 70.4 49.3-91.5 Ac.ceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Plutonium-239/240 46.8 53.8 37.7-69.9 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Potassium-40 619 588 412-764 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Strontium-90 770 894 626-1162 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Technetium-99 548 556 389-723 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg U-234/233 122 122 85-159 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Uranium-238 122 121 85-157 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaS35 Soil Sq/Kg Zinc-65 775.0 695 487-904 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Americium-241 0.725 0.814 0.570-1.058 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Cesium-134 22.20 23.9 16.7-31.1 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Cesium-137

-0.089 0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Cobalt-57 27.6 27.3 19.1-35.5 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Cobalt-60

-0.001 0.0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Bq/L Hydrogen-3 337 334 151-281 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Bq/L lron-55 22.3 21.5 15.1-28.0 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Manganese-54 14.7 14.8 10.4-19.2 Acceptable C-17 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Nickel-63 17 .0 17.2 12.0-22.4 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Plutonium-238 1.09 1.13 0.79-1.47 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Plutonium-239/240 0.024 0.013 Sens. Eval. Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Potassium-40 275 252 176-328 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Radium-226 1.02 1.33 0.93-1.73 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Strontium-90

-0.00289 0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Technetium-99 10.90 11.60 8.1-15.1 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Uranium-234/233 1.85 1.86 1.30-2.42 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-MaW35 Water Sq/L Uran.ium-238 1.890 1.920 1.34-2.50 Acceptable MAPEP 4th/2016 12/02/16 MAPf-P-16-MaW35 Water Sq/L Zinc-65 17.5 17.4 12.2-22.6 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-XaW35 Alk. Water Sq/L lodine-129 0.425 0.429 0.129-0. 729 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter ug/sample Uranium-235 0;0915 0.0903 0.0632-0.117 4 Accept;ible MA PEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter ug/sample Uranium-238 13.0 12.5 8.8-16.3 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter ug/sample Uranium-Total 13.60 12.6 8.8-16.4 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter ug/sample Americium-241

-0.000067 0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Cesium-134 1.7500 2.04 1.43-2.65 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Cesium-137 1.89 1.78 1.25-2.31 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Cobalt-57 2.48 2.48 1.74-3.22 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Cobalt-60 3.30 3.26 2.28-4.24 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Manganese-54 2.87 2.75 1.93-3.58 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Plutonium-238 0.0694 0.0693 0.0485-0.0901 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Plutonium-239/240 0.0508 0.0535 0.0375-0.0696 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Strontium-90 0.726 1.03 0.72-1.34 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Uranium-234/233 0.150 0.150 0.105-0.195 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Uranium-238 0.152 0.156 0.109-0.203 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdF35 Filter Sq/sample Zinc-65 0.0232 0 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Americium-241 0.052 0.062 0.076-0.140 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Cesium-134 0.0307 False Pos Test Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Cesium-137 5.8100 5.51 3.88-7.20 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Cobalt-57 6.920 6.81 4.77-8.85 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Cobalt-60 4.950 4.86 3.40-6.32 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Manganese-54 7.800 7.27 5.09-9.45 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Plutonium-238 0.078300 0.0820 0.57-0.107 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Plutonium-239/240 0.00151 False Pos Test Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Strontium-90 0.575 0.80 0.56-1.04 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Uranium-234/233 0.114 0.117 0.082-0.152 Acceptable MA PEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Uranium-238 0.125 0.122 0.085-0.159 Acceptable MAPEP 4th/2016 12/02/16 MAPEP-16-RdV35 Vegetation Sq/sample Zinc-65 5.870 5.40 3.78-7.02 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Actinium-228 1140 1170 750 -1620 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Americium-241 1040 878 514-1140 Acceptable C-18 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 PT c::iuarter

/' Report Sample Nunibe'r *Sample GEL Known *Acceptance.

Received Unit Analyte/ Nuclide Evaluation Provider:

*Year oatE! *Media Value value Rangel Ratio -ERA 4th/2016 11123/16 MRAD-25 Soil pCi/kg Bismuth-212 1500 1280 341 -1880 Acceptable ERA 4th/2016 11123/16 MRAD-25 Soil pCilkg Bismuth-214 1350 1230 741 -1770 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Cesium-134 5450 5470 3580 -6570 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Cesium-137 7230 6700 5130 -8620 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Cobalt-60 8490 8020 5420 -11000 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Lead-212 1230 1200 786 -1670 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Lead-214 1460 1280 747-1910 Acceptable ERA 4th/2016 11/23/16 -MRAD-25 Soil pCi/kg Manganese-54

<51.2 <1000 <1000 Acceptable ERA 4th/2016 11 /23/16 MRAD-25 Soil pCi/kg Plutonium-238 587 647 389 -893 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Plutonium-239 561 525 343 -725 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Potassium-40 11000 10600 7740 -14200 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Strontium-90 3740 4540 1730 -7170 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Thorium-234 2120 1750 553 -3290 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-234 1650 1760 1080 -2260 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-234 1230 1760 1080 -2260 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-234 2220 1760 1080 -2260 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-238 1630 1750 1080 -2220 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-238 1290 1750 1080 -2220 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-238 1550 1750 1080 -2220 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-Total 3910 3590 1950 -4740 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-Total 3310 3590 1950 -4740 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-Total 2520 3590 1950-4740 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Uranium-Total 3930 3590 1950-4740 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil µg/kg Uranium-Total (mass) 4890 5240 2890 -6590 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil µg/kg Uranium-Total (mass) 5840 5240 2890 -6590 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil µg/kg Uranium-Total (mass) 3780 5240 2890 -6590 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil µg/kg Uranium-Total (mass) 4670 5240 2890 -6590 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Soil pCi/kg Zinc-65 3310 2920 2330 -3880 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Americium-241 1590 1530 935 -2030 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Cesium-134 1640 1690 1090 -2200 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Cesium-137 1170 1030 747 -1430 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Cobalt-60 1680 1560 1080-2180 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Curium-244 496 530 260 -826 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Manganese-54

<29.6 <300 <300 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Plutonium-238 1440 1330 793 -1820 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Plutonium-239 1230 1100 675-1510 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Potassium-40 31400 30900 22300 -43400 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Strontium-90 4290 4670 2660 -6190 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-234 3730 3110 2040 -3990 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-234 3430 3110 2040-3990 Acceptable C-19 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016

Report . -PT . Quarter/*

Sample Number*

Sample .. ; GEL Known* _Acceptance Year Received.

Media --*-**Unit Analyte l Nuclide Value. value Range/ R_atio ** Evaluation

---Date ,. --ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-238 3490 3090 2060 -3930 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-238 3370 3090 2060 -3930 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-Total 7248 6340 4300-7890 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-Total 6680 6340 4300-7890 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-Total 7190 6340 4300 -7890 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Uranium-Total 6680 6340 4300 -7890 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation

µg/kg Uranium-Total (mass) 9980 9250 6200 -11700 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation

µg/kg Uranium-Total (mass) 10500 9250 6200 -11700 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation

µg/kg Uranium-Total (mass) 10100 9250 6200 -11700 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Vegetation pCi/kg Zinc-65 2090 1690 1220 -2370 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Americium-241 44 42.3 26.1 -57.2 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Cesium-134 614 614 391 -762 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Cesium-137 1280 1170 879 -1540 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Cobalt-60 950 900 696-1120 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter lron-55 232 248 76.9 -485 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Manganese-54

<4.55 <50.0 <50.0 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Plutonium-238 54.5 61.9 42.4 -81.4 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Plutonium-239 54.8 59.7 43.2-78.0 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Strontium-90 97.4 101 49.4 -151 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Uranium-234 30.3 29.2 18.1 -44.0 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Uranium-234 30.9 29.2 18.1 -44.0 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Uranium-238 27.9 28.9 18.7-40.0 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Uranium-238 29.4 28.9 18.7 -40.0 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Uranium-Total 54.1 59.5 32.9 -90.5 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Uranium-Total 61.5 59.5 32.9 -90.5 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Uranium-Total 60 59.5 32.9 -90.5 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter µg/Filter Uranium-Total (mass) 83.7 86.7 55.5 -122 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter µg/Filter Uranium-Total (mass) 80.7 86.7 55.5 -122 Acceptable ERA 4th/2016 11 /23/16 MRAD-25 Filter µg/Filter Uranium-Total (mass) 88.3 86.7 55.5 -122 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Zinc-65 1330 1150 824 -1590 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Gross Alpha 79.6 71.2 23.9 -111 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Filter pCi/Filter Gross Beta 71.7 60.3 38.1 -87.9 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Americium-241 58.6 56.2 37.9 -75.4 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Cesium-134 1190 1260 925 -1450 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Cesium-137 1030 987 838 -1180 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Cobalt-60 1990 1960 1700 -2290 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L lron-55 228 245 146 -332 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Manganese-54

<5.09 <100 <100 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Plutonium-238 85.6 112 82.9 -139 Acceptable C-20 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 .. Repor( -. PT. Quarter I

Sample _Number. *_sample Unit -* *Analyte/

Nuclide GEL 'Known Acceptance Provider Year

Received Media Value value Rarig!=!l Ratio

.. ' Date: ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Plutonium-239 125 157 122 -198 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Strontium-90 658 751 489 -993 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-234 106 105 78.9 -135 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-234 108 105 78.9-135 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-234 103 105 78.9 -135 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-238 98.4 104 79.3 -128 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-Total 209 213 157 -275 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-Total 225 213 157 -275 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-Total 214 213 157 -275 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Uranium-Total 211 213 157-275 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water µg/L Uranium-Total (mass) 295 311 248 -376 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water µg/L Uranium-Total (mass) 317 311 248 -376 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water µg/L Uranium-Total (mass) 336 311 248 -376 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water µg/L Uranium-Total (mass) 312 311 248-376 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Zinc-65 807 724 604-913 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Gross Alpha 207 165 58.6 -256 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Gross Beta 119 130 74.4 -193 Acceptable ERA 4th/2016 11/23/16 MRAD-25 Water pCi/L Tritium 9210 10100 6770 -14400 Acceptable EZA 4th/2016 02/21/17 E11674 Cartridge pCi lodine-131 9.60E+01 9.67E+01 0.99 Acceptable EZA 4th/2016 02/21/17 E11675 Milk pCi/L Strontium-89 7.86E+01 7.42E+01 1.06 Acceptable EZA 4th/2016 02/21/17 E11675 Milk pCi/L Strontium-90 7.50E+OO 1.00E+01 0.75 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L lodine-131 1.08E+02 9.74E+01 1.11 Acceptable EZA 4th/2016 02/21 /17 E11676 Milk pCi/L Cerium-141 1.55E+02 1.43E+02 1.09 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L Chromium-51 3.29E+02 2.80E+02 1.18 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L Cesium-134 1.67E+02 1.78E+02 0.94 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L Cesium-137 1.43E+02 1.26E+02 1.13 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L Cobalt-58 1.54E+02 1.46E+02 1.05 Acceptable EZA 4th/2016 02/21 /17 E11676 Milk pCi/L Manganese-54 1.46E+02 1.29E+02 1.13 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L lron-59 1.45E+02 1.25E+02 1.16 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L Zinc-65 2.68E+02 2.44E+02 1.10 Acceptable EZA 4th/2016 02/21/17 E11676 Milk pCi/L Cobalt-60 1.87E+02 1.78E+02 1.05 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L lodine-131 1.06E+02 9.18E+01 1.15 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L Cerium-141 1.47E+02 1.38E+02 1.06 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L Chromium-51 3.03E+02 2.71E+02 1.12 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L Cesium-134 1.59E+02 1.73E+02 0.92 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L Cesium-137 1.38E+02 1.22E+02 1.13 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L Cobalt-58 1.49E+02 1.42E+02 1.05 Acceptable C-21 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 EZA 4th/2016 02/21/17 E11677 Water pCi/L Manganese-54 1.35E+02 1.25E+02 1.08 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L lron-59 1.35E+02 1.21 E+02 1.12 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L Zinc-65 2.61E+02 2.36E+02 1.10 Acceptable EZA 4th/2016 02/21/17 E11677 Water pCi/L Cobalt-60 1.76E+02 1.72E+02 1.02 Acceptable C-22 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table C-2 c e 1e 2016 E k rt & z* a er A If na1y ICS p f er ormance E f va ua ion R esu It s .. ***-***. .... '*

.. * .

. . * 'f?ampie *

' GEl*_ sample Media;:, 'Unit Knowrivatue

., * *

.' ..

... : .. :** ..

- r;: .. : -Value**'**

--*;* .. , ...... ... ,,::.:** : ... :*, ... *Ratio :. .. 2/18/2016 E11412 Cartridge pCi lodine-131 7.73E+01 7.98E+01 0.97 Acceptable 2/18/2016 E11413 Milk pCi/L Strontium-89 9.41E+01 8.68E+01 1.08 Acceptable 2/18/2016 E11413 Milk pCi/L Strontium-90 9.74E+OO 1.25E+01 0.78 Acceptable 2/18/2016 E11414 Milk pCi/L lodine-131 1.01E+02 9.12E+01 1.11 Acceptable 2/18/2016 E11414 Milk pCi/L Cerium-141 1.36E+02 1.29E+02 1.06 Acceptable 2/18/2016 E1-1414 Milk pCi/L Chromium-51 2.79E+02 2.81E+02 0.99 Acceptable 2/18/2016 E11414 Milk pCi/L Cesium-134 1.45E+02 1.60E+02 0.91 Acceptable 2/18/2016 E11414 Milk pCi/L Cesium-137

1. 15E+02 1.15E+02 1.00 Acceptable 2/18/2016 E11414 Milk pCi/L Cobalt-58 1.06E+02 1.10E+02 0.96 Acceptable 2/18/2016 E11414 Milk pCi/L Manganese-54 1.53E+02 1.45E+02 1.06 Acceptable 2/18/2016 E11414 Milk pCi/L lron-59 1.19E+02 1.08E+02 1.10 Acceptable 2/18/2016 E11414 Milk pCi/L Zinc-65 2.69E+02 2.48E+02 1.08 Acceptable 2/18/2016 E11414 Milk pCi/L Cobalt-60 2.12E+02 2.13E+02 0.99 Acceptable 2/18/2016 E11415 Water pCi/L lodine-131 1.05E+02 9.26E+01 1.13 Acceptable 2/18/2016 E11415 Water pCi/L Cerium-141 1.27E+02 1.12E+02 1.14 Acceptable 2/18/2016 E11415 Water pCi/L Chromium-51 2.60E+02 2.44E+02 1.07 Acceptable 2/18/2016 E11415 Water pCi/L Cesium-134 1.25E+02 1.39E+02 0.90 Acceptable 2/18/2016 E11415 Water pCi/L Cesium-137 1.12E+02 9.95E+01 1.13 Acceptable 2/18/2016 E11415 Water pCi/L Cobalt-58 9.73E+01 9.56E+01 1.02 Acceptable 2/18/2016 E11415 Water pCi/L Manganese-54 1.41E+02 1.26E+02 1. 12 Acceptable 2/18/2016 E11415 Water pCi/L lron-59 1.11E+02 9.34E+01 1.19 Acceptable 2/18/2016 E11415 Water pCi/L Zinc-65 2.43E+02 2. 15E+02 1.13 Acceptable 2/18/2016 E11415 Water pCi/L Cobalt-60 1.92E+02 1.85E+02 1.04 Acceptable 05/16/15 E11445 Cartridge pCi lodine-131 9.39E+01 8.86E+01 1.06 Acceptable 05/16/15 E11446 Milk pCi/L Strontium-89 8.16E+01 8.67E+01 0.94 Acceptable 05/16/15 E11446 Milk pCi/L Strontium-90 1.08E+01 1.14E+01 0.95 Acceptable 05/16/15 E11447 Milk pCi/L lodine-131 9.41E+01 8.22E+01 1. 15 Acceptable 05/16/15 E11447 Milk pCi/L Cerium-141 1.05E+02 9.84E+01 1.07 Acceptable 05/16/15 E11447 Milk pCi/L Chromium-51 2.69E+02 2.43E+02 1.11 Acceptable 05/16/15 E11447 Milk pCi/L Cesium-134 1.13E+02 1.30E+02 0.87 Acceptable 05/16/15 E11447 Milk pCi/L Cesium-137 1.64E+02 1.61E+02 1.02 Acceptable C-23 --------------------

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 ::*.:: '. " *>*. *:. .,;:*_ . . : *.:*. : .. .-OMO* '* ,I:'. -*Report --__ Sample :.

.. *Unit IN u.cl_id(:!

,. *GEL. **** Kno1Nn

Rarige/ Evaluatiqn

...

,: *.. /Numb.er*

.*. '*: vafu_e . ; -.. *.-. * ... *. :: ... *.Ratio***

... ** ----* : --. *.' *--* 05/16/15 E11447 Milk pCi/L Cobalt-58 1.16E+02 1.17E+02 0.99 Acceptable 05/16/15 E11447 Milk pCi/L Manganese-54 1.24E+02 1. 17E+02 1.06 Acceptable 05/16/15 E11447 Milk pCi/L lron-59 1.47E+02 1.31E+02 1.12 Acceptable 05/16/15 E11447 Milk pCi/L Zinc-65 1.98E+02 1.79E+02 1.11 Acceptable 05/16/15 E11447 Milk pCi/L Cobalt-60 2.59E+02 2.44E+02 1.06 Acceptable 05/16/15 E11448 Water pCi/L lodine-131 9.92E+01 9.67E+01 1.03 Acceptable 05/16/15 E11448 Water pCi/L Cerium-141 1.40E+02 1.39E+02 1.01 Acceptable 05/16/15 E11448 Water pCi/L Chromium-51 3.95E+02 3.66E+02 1.08 Acceptable 05/16/15 E11448 Water pCi/L Cesium-134 1.12E+02 1.26E+02 0.89 Acceptable 05/16/15 E11448 Water pCi/L Cesium-137 1.69E+02 1.67E+02 1.01 Acceptable 05/16/15 E11448 Water pCi/L Cobalt-58 1.78E+02 1.80E+02 0.99 Acceptable 05/16/15 E11448 Water pCi/L Manganese-54 1.66E+02 1.59E+02 1.05 Acceptable 05/16/15 E11448 Water pCi/L lron-59 2.14E+02 1.95E+02 1.01 Acceptable 05/16/15 E11448 Water pCi/L Zinc-65 3.25E+02 2.99E+02 1.09 Acceptable 05/16/15 E11448 Water pCi/L Cobalt-60 3.23E+02 3.28E+02 0.98 Acceptable 05/16/15 E11449 Water pCi/L Niobium-95 4.01E+03 3.62E+03 1.11 Acceptable 05/16/15 E11449 Water pCi/L Zirconium-95 9.79E+03 9.48E+03 1.03 'Acceptable 05/16/15 E11449 Water pCi/L Tc-99M 1.34E+03 1.32E+03 1.02 Acceptable 05/16/15 E11449 Water pCi/L Ruthenium-103 6.33E+03 6.23E+03 1.02 Acceptable 05/16/15 E11449 Water pCi/L lodine-131 4.64E+03 4.83E+03 0.96 Acceptable 05/16/15 E11449 Water pCi/L lodine-132 1.39E+03 1.62E+03 0.86 Acceptable 05/16/15 E11449 Water pCi/L Tellurium-132 1.81E+03 1.50E+03 1.21 Acceptable 05/16/15 E11449 Water pCi/L Cesium-137 7.79E+01 7.31E+01 1.07 Acceptable 05/16/15 E11449 Water pCi/L Barium-140 1.89E+04 1.85E+04 1.02 Acceptable 05/16/15 E11449 Water pCi/L Lanthanum-140 2.11E+04 2.06E+04 1.03 Acceptable 05/16/15 E11449 Water pCi/L Cerium-141 1.43E+04 1.39E+04 1.03 Acceptable 05/16/15 E11449 Water pCi/L Cerium-144 2.20E+03 2.08E+03 1.06 Acceptable 05/16/15 E11449 Water pCi/L Neodymium-147 6.40E+03 6.19E+03 1.03 Acceptable 07/27/16 E11573 Cartridge pCi lodine-131 9.52E+01 8.94E+01 1.07 Acceptable 07/27/16 E11574 Milk pCi/L Strontium-89 8.51E+01 9.44E+01 0.90 Acceptable 07/27/16 E11574 Milk pCi/L Strontium-90 9.49E+01 1.54E+01 0.62 Acceptable 07/27/16 E11575 Milk pCi/L lodine-131 9.77E+01 9.45E+01 1.03 Acceptable 07/27/16 E11575 Milk pCi/L Cerium-141 1.46E+02 1.39E+02 1.05 Acceptable 07/27/16 E11575 Milk pCi/L Chromium-51 2.53E+02 2.76E+02 0.92 Acceptable 07/27/16 E11575 Milk pCi/L Cesium-134 1.62E+02 1.74E+02 0.93 Acceptable C-24 Donald C. Cook Nuclear Annual Radiological Environmental Operating Report 2016 .* ...............

- :* ... .-... ,. -** . ... ' .. .. *-* ..

,;, ** . ..,-Report

., -.. : ., ... , . GEL. *' .::*,?;*;

.> *'." ;_

.:= \0nit .

N_ucUdE;*.

-**** ** Knowri value .. ; Evalua!!9n

.. *. oat'e;\ _ .... Number, .. . .. ,,

Rangel* .. " . -. . . .. ; . . *r: Ratio --*. 07/27/16 E11575 Milk pCi/L Cesium-137 1.20E+02 1.20E+02 1.00 Acceptable 07/27/16 E11575 Milk pCi/L Cobalt-58 1.39E+02 1.42E+02 0.98 Acceptable 07/27/16 E11575 Milk pCi/L Manganese-54 1.26E+02 1.25E+02 1.00 Acceptable 07/27/16 E11575 Milk pCi/L lron-59 1.25E+02 1.22E+02 1.03 Acceptable 07/27/16 E11575 Milk pCi/L Zinc-65 2.47E+02 2.35E+02 1.05 Acceptable 07/27/16 E11575 Milk pCi/L Cobalt-60 1.72E+02 1.73E+02 1.00 Acceptable 07/27/16 E11576 Water pCi/L lodine-131 1.02E+02 9.67E+01 1.05 Acceptable 07/27/16 E11576 Water pCi/L Cerium-141 1.56E+02 1.47E+02 1.06 Acceptable 07/27/16 E11576 Water pCi/L Chromlum-51 3.33E+02 2.92E+02 1.14 Acceptable 07/27/16 E11576 Water pCi/L Cesium-134 1.65E+02 1.85E+02 0.89 _ Acceptable 07/27/16 E11576 Water pCi/L Cesium-137 1.34E+02 1.28E+02 1.05 Acceptable 07/27/16 E11576 Water pCi/L Cobalt-58 1.47E+02 1.51E+02 0.98 Acceptable 07/27/16 E11576 Water pCi/L Manganese-54 1.45E+02 1.33E+02 1.09 Acceptable 07/27/16 E11576 Water pCi/L lron-59 1.54E+02 1.29E+02 1.19 Acceptable 07/27/16 E11576 Water pCi/L Zinc-65 2.72E+02 2.49E+02 1.09 Acceptable 07/27/16 E11576 Water pCi/L Cobalt-60 1.99E+02 1.83E+02 1.09 Acceptable 11/28/16 E11605 Cartridge pCi lodine-131 6.33E+01 6.01E+01 1.05 Acceptable 11/28/16 E11606 Milk pCi/L Strontium-89 7.60E+01 9.09E+01 0.84 Acceptable 11/28/16 E11606 Milk pCi/L Strontium-90 1.17E+01 1.37E+01 0.85 Acceptable 11/28/16 E11607 Milk pCi/L lodine-131 7.53E+01 7.19E+01 1.05 Acceptable 11/28/16 E11607 Milk pCi/L Cerium-141 9.85E+01 9.32E+01 1.06 Acceptable 11/28/16 E11607 Milk pCi/L Chromium-51 2.63E+02 2.36E+02 1.12 Acceptable 11/28/16 E11607 Milk pCi/L Cesium-134 1.21E+02 1.36E+02 0.89 Acceptable 11/28/16 E11607 Milk pCi/L Cesium-137 1.19E+02 1.19E+02 1.00 Acceptable 11/28/16 E11607 Milk pCi/L Cobalt-58 9.56E+01 9.74E+01 0.98 Acceptable 11/28/16 E11607 Milk pCi/L Manganese-54 1.61E+02 1.52E+02 1.06 Acceptable 11/28/16 E11607 Milk pCi/L lron-59 9.00E+01 9.06E+01 0.99 Acceptable 11/28/16 E11607 Milk pCi/L Zinc-65 2.11 E+02 1.79E+02 1.18 Acceptable 11/28/16 E11607 Milk pCi/L Cobalt-60 1.44E+02 1.35E+02 1.07 Acceptable 11/28/16 E11068 Water pCi/L lodine-131 5.53E+01 4.90E+01 1.13 Acceptable 11/28/16 E11068 Water pCi/L Cerium-141 9.49E+01 8.52E+01 1.11 Acceptable 11/28/16 E11068 Water pCi/L Chromium-51 2.03E+02 2.15E+02 0.95 Acceptable*

11/28/16 E11068 Water pCi/L Cesium-134 1.20E+02 1.24E+02 0.97 Acceptable 11/28/16 E11068 Water pCi/L Cesium-137 1.15E+02 1.08E+02 1.06 Acceptable C-25 -------------

Donald C. Cook Nuclear Plant -Repprt* ::oatE! *

11/28/16 11/28116 11/28/16 11/28/16 11/28/16 02/21/17 02/21/17 02/21/17 02/21/17 02/21/17 02/21/17 02/21/17 02/21/17 02/21/17 02/21/17 02121/17 02121/17 02121117 02121117 02121/17 02/21117 02121117 02121/17 02121117 02121/17 02121/17 02121/17 02121117 E11068 E11068 E11068 E11068 E11068 E11674 E11675 E11675 E11676 E11676 E11676 E11676 E11676 E11676 E11676 E11676 E11676 E11676 E11677 E11677 E11677 E11677 E11677 E11677 E11677 E11677 E11677 E11677 Annual Radiological Environmental Operating Report 2016 Water pCi/L Water pCi/L Water pCi/L Water pCi/L Water pCi/L Cartridge pCi Milk pCi/L Milk pCi/L Milk pCi/L Milk pCi/L Milk pCi/L Milk pCi/L Milk pCi/L Milk pCi/l Milk pCi/L Milk pCi/L Milk pCi/L Milk oCi/L Water oCi/L Water oCi/L Water oCi/L Water oCi/L Water pCi/L Water pCi/L Water oCi/L Water oCi/L Water oCi/l Water pCi/L Cobalt-58 Manganese-54 lron-59 Zinc-65 Cobalt-60 lodine-131 Strontium-89 Strontium-90 lodine-131 Cerium-141 Chromium-51 Cesium-134 Cesium-137 Cobalt-58 Manganese-54 lron-59 Zinc-65 Cobalt-60 lodine-131 Cerium-141 Chromium-51 Cesium-134 Cesium-137 Cobalt-58 Manganese-54 lron-59 Zinc-65 Cobalt-60 C-26 GEL .. Value.* 9.54E+01 1.47E+02 8.73E+01 1.79E+02 1.26E+02 9.60E+01 7.86E+01 7.50E+OO 1.08E+02 1.55E+02 3.29E+02 1.67E+02 1.43E+02 1.54E+02 1.46E+02 1.45E+02 2.68E+02 1.87E+02 1.06E+02 1.47E+02 3.03E+02 1.59E+02 1.38E+02 1.49E+02 1.35E+02 1.35E+02 2.61E+02 1.76E+02 -.*,_**-... , '* *Kpo)Nn 8.90E+01 1.39E+02 8.28E+01 1.63E+02 1.23E+02 9.67E+01 7.42E+01 1.00E+01 9.74E+01 1.43E+02 2.80E+02 1.78E+02 1.26E+02 1.46E+02 1.29E+02 1.25E+02 2.44E+02 1.78E+02 9.18E+01 1.38E+02 2.71E+02 1.73E+02 1.22E+02 1.42E+02 1.25E+02 1.21 E+02 2.36E+02 1.72E+02 Acceptanc;e.

Ra.nger* ***.'Ratio.

1.07 1.06 1.05 1.10 1.02 0.99 1.06 0.75 1.11 1.09 1.18 0.94 1.13 1.05 1.13 1.16 1.10 1.05 1.15 1.06 1.12 0.92 1.13 1.05 1.08 1.12 1.10 1.02 **,-( i;valuatii:m

**.,-Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceptable Acceotable Acceotable Acceotable Acceotable Acceptable Acceptable Acceptable Acceptable Acceptable Acceotable Acceotable Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table C-3 REMP Intra-Laboratory Data Summary: Bias and Precision by Matrix * *

r : * : ' Bias Criteria '*

Priedsior{Criteria . ' ........ * * .. ' :* (Nate il: '

2.0l6' .. *., * .. *:' ;, .* .-*: 't+./-250(0)*

..... *.* : . .OUTS!DI;

< , *. . .. , ****CRITERIA

' *c-1htERIA . w:i:THiilN:

; OUTSIDE.*

... dutERIA *

cRlteRIA ' . . ,. . MILK.*,' Gamma Iodine-131 19 0 108 0 Gas Flow Sr 2nd count 38 0 43 0 Gas Flow Total Strontium 24 0 24 0 Gamma Spec Liquid RAD A-013 with Ba, La 60 0 105 0 . -*. . .* ,*SOlID. *. . ; *,* " -* **' . .. LSC Iron-55 3 0 3 0 Gamma Spec Solid RAD A-013 15 0 19 0 LSC Nickel 63 3 0 3 0 Gas Flow Sr 2nd count 4 0 4 0 Gas Flow Total Strontium 3 0 3 0 Gamma Spec Solid RAD A-013 with Ba La 5 0 9 0 Gamma Soec Solid RAD A-013 with Iodine 8 0 9 0 ' .. '.' .*.... . : : . ...... Gamma Spec Filter RAD A-013 3 0 3 0 Gas Flow Sr 2nd Count 5 0 5 0 Gross A & B 272 0 274 0 Gamma Soec Filter 31 0 34 0 ':* ', ,:* .****** **uouxo * * *. o!i:. .,: .. _, .. , *. **.' ': .*.... '* ... '. : "' " ':: : *-.. ,,._. Aloha Soec Uranium 5 0 5 0 Tritium 171 0 173 0 LSC Iron-55 11 0 12 0 LSC Nickel 63 10 0 10 0 Gamma Spec Liquid RAD A-013 5 0 5 0 Gamma Iodine-131 21 0 21 0 Alpha Soec Plutonium 5 0 5 0 Gas Flow Sr 2nd count 8 0 8 0 Aloha Spec Am241 Curium 10 0 10 0 Gas Flow Total Strontium 24 0 23 0 Gross Alpha Non Vol Beta 32 0 35 0 Gamma Spec Liquid RAD A-013 with Ba La 71 0 141 0 Gamma Soec Liquid RAD A-013 with Iodine 15 0 15 0 ... ' :;. ' .* ... ;: : "*:::> ' ' :':/;, : ... **

\*.:*:* Gamma Spec Solid RAD A-013 29 0 29 0 Gas Flow Sr 2nd count 9 0 9 0 Gas Flow Total Strontium 7 0 7 0 Gamma Soec Solid RAD A-013 with Iodine 11 0 11 0 LSC Iron-55 7 0 5 0 LSC Nickel 63 7 0 6 0 C-27 ..

Donald C. Cook: Nuclear Plant Annual Radiological Environmental Operating Report 2016 * .

C:;;iteria

* . Precision criteria * * , , . <+J .... '.25%1 . . i il ,; . . , .*/*.: ..

: .. : . **: :,:* . * ......

*

..

Gas Flow Total Strontium Gross Alpha Non Vol Beta Gamma Spec Liquid RAD A-013 with Iodine .VEGETATION

. * .. *.* .* *' .. . . *: { . **.'. > Gas Flow Sr 2nd count Gamma Spec Solid RAD A-013 with Iodine . AIR CHARCOAL ' *.* ' ; ' . Gamma Iodine 131 RAD A-013 Carbon-14 (Ascarite/Soda Lime Filter per Liter) Tritium LSC Iron-55 LSC Nickel 63 Gamma Iodine-131 Gas Flow Sr 2nd count Gas Flow Total Strontium Gross Alpha Non Vol Beta Gamma Spec Liquid RAD A-013 with Ba, La Total 10 0 9 0 9 0 8 0 9 0 9 0 r .. ***** '*** . .. ,, * . ,;,L ... ,,.; .. * .* .. *:.,,*.:i

. .. ** *. *.:<; 7 0 7 0 78 0 82 0 .. .. ' ... .'.' :* ... .. ., * 369 0 419 0 28 0 28 0 . .** , . '* " ..... :. ; 35 0 33 0 11 0 12 0 11 0 12 0 26 0 26 0 12 0 12 0 10 0 12 0 67 0 67 0 0 21 0 71 1654 1983 Note 1: The RPD 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 RPD 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 RPD 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 % RPD are not applicable.

C-28 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table C-4 All Radiological lntra-Laboratocy Data Summary: Bias and Precision by Matrix . , ** .. ,.-,. ** .. " . ::.:* : . .,. Gamma Spec Liquid RAD A-013 Gamma Iodine-131 Gas Flow Sr 2nd count Gas Flow Total Strontium Gamma Spec Liquid RAD A-013 with Ba, La Gamma Spec Liquid RAD A-013 with Iodine . SOLiD , .. '; ' . Gas Flow Radium 228 Tritium Carbon-14 LSC Iron-55 Aloha Spec Polonium Solid Gamma Nickel 59 RAD A-022 LSC Chlorine-36 in Solids Gamma Soec Ra226 RAD A-013 Gamma Spec Solid RAD A-013 LSC Nickel 63 LSC Plutonium Technetium-99 ICP-MS Technetium-99 in Soil LSC Selenium 79 Total Activity, Tritium Alpha Spec Am243 Gamma Iodine-129 Gas Flow Lead 210 Total Uranium KPA Aloha Soec Uranium LSC Promethium 147 LSC, Rapid Strontium 89 and 90 Alpha Spec Thorium Gas Flow Radium 228 ICP-MS Uranium-233, 234 in Solid Alpha Spec Plutonium ICP-MS Technetium-99 Prep in Soil Aloha Spec Neptunium Aloha Spec Plutonium Alpha Spec Radium 226 Dissolution Soil Prep Gas Flow Sr 2nd count Gas Flow Strontium 90 Lucas Cell Radium 226 Total Activity Screen

"':i.5°10

,

cmetia <Note n

VlfIIH.Irt

'. * . OUTSIDE: _, * ** ;wrrHIN * **. " CRITERIA ' CRlTERiA:.

' ... CRITERIA*

' *.CRITERIA . . ... L: -' ' : .. 3 0 3 0 19 0 108 0 38 0 43 0 24 0 24 0 60 0 105 0 2 0 3 0 ... *" .. ' .: : ...

75 0 79 0 257 0 294 0 164 0 218 0 109 0 117 0 10 0 11 0 106 0 111 0 3 0 3 0 36 0 50 0 736 0 1056 0 196 0 198 0 208 0 214 0 348 0 378 0 7 0 5 0 5 0 6 0 2 0 2 0 39 0 41 0 43 0 58 0 114 0 146 0 9 0 10 0 5 0 6 0 333 0 458 0 3 0 3 0 60 0 69 0 289 0 352 0 0 0 56 0 37 0 37 0 379 0 382 0 7 0 5 0 313 0 318 0 171 0 189 0 32 0 29 0 1 0 1 0 48 0 50 0 241 0 244 0 89 0 156 0 7 0 10 0 C-29 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 . , , . :. , . , " *. *,* .. -*:*'".\:, *. : . *.* . ':> .:** ***;. *:Tatar RaidioloQi¢:ai

.20Hii * *, *; *: " ; Alpha Spec Am241 Curium Alpha Soec Total Uranium Gas Flow Total Strontium Gross Alpha Non Vol Beta ICP-MS Uranium-233 234 Prep in Solid ICP-MS Uranium-235, 236, 238 in Solid Gamma Soec Solid RAD A-013 with Ba, La Gamma Spec Solid RAD A-013 with Iodine GFC Chlorine-36 in Solids Gamma Spec Solid RAD A-013 (pCi/Sample)

Tritium Alpha Spec Am241 (pCi/Sample)

ICP-MS Uranium-234, 235 236 238 in Solid ICP-MS Uranium-235, 236, 238 Prep in Solid Alpha Spec Uranium Gross Alpha/Beta Alpha Spec Plutonium Gas Flow Strontium 90 Gross Aloha/Beta (Americium Calibration)

Solid ICP-MS Uranium-234.

235. 236, 238 Prep in Solid .::* ..... Aloha Spec Uranium Alpha Spec Polonium Gamma I-131. filter LSC Plutonium Filter Tritium Carbon-14 Nickel-63 LSC Iron-55 Gamma Nickel 59 RAD A-022 LSC Nickel 63 Technetium-99 Gamma Spec Filter RAD A-013 LSC Selenium 79 Alphaspec Np Filter per Liter Alphaspec Pu Filter per Liter Gamma Iodine-125 Gamma Iodine-129 Aloha Spec Am243 Gas Flow Lead 210 LSC Plutonium Filter per Liter Total Uranium KPA Alpha Spec Uranium LSC Promethium 147 LSC Rapid Strontium 89 and 90 Alpha Spec Thorium

Bias

(+ f..., 25°/o::: .**.*. WnHrN** *.* *outs16rf , : ciriTERi:A' 405 0 28 0 42 0 0 0 39 0 41 0 5 0 8 0 5 0 2 0 19 0 1 0 92 0 39 0 2 0 339 0 2 0 2 0 5 0 47 0 ":: . .**., *.v::t*::*'

....... *** ;;; .** *"<<' ... .. 11 0 0 0 3 0 81 0 56 0 20 0 0 0 67 0 57 0 67 0 38 0 132 0 3 0 7 0 25 0 4 0 9 0 11 0 0 0 4 0 9 0 51 0 3 0 65 0 35 0 C-30 tf . 'wn'HIN' cR.nEihA.

423 31 45 1 39 37 9 9 6 2 21 1 81 39 1 444 1 1 5 43 *.* OUTSIDE *.* .* 'cRil-EfixA

'; 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ... *. : ;. ; :* ....... ); "* ', :'.' ,; :,; **** .. ,'. ') '*: .. 23 0 4 0 4 0 98 0 105 0 71 0 5 0 75 0 64 0 77 0 86 0 186 0 14 0 11 0 28 0 0 0 63 0 18 0 4 0 6 0 16 0 95 0 4 0 88 0 49 0 Donald C. Cook Nuclear Plant :*.:**** .. *'. , ...

'io-i6

Aloha Soec Plutonium ICP-MS Uranium-233, 234 in Filter Alpha Spec Neptunium Alpha Spec Plutonium Alpha Spec Polonium,(Filter/Liter)

Aloha Spec Radium 226 Aloha/Beta (Americium Calibration)

Gas Flow Sr 2nd Count Gas Flow Strontium 90 Alpha Soec Am241Curium Gas Flow Total Strontium ICP-MS Uranium-233 234 Prep in Filter ICP-MS lJranium-235, 236, 238 in Filter Total Activity in Filter, Alphasoec Am241 Curium Filter oer Liter Tritium GFC Chlorine-36 in Filters Gamma Spec Filter RAD A-013 Direct Count Carbon-14 GFC Chlorine-36 in Filters PL Direct Count-Gross Alpha/Beta Gross Alpha/Beta ICP-MS Uranium-234 235, 236. 238 in Filter ICP-MS Uranium-235 236. 238 Preo in Filter Alpha Soec U Gross A & B LSC Iron-55 Technetium-99 Gas Flow Sr-90 LSC Nickel 63 Carbon-14 (Ascarite/Soda Lime Filter oer Liter) Gas Flow Pb-210 Gas Flow Ra-228 Gamma Iodine 129 ICP-MS Uranium-234 235, 236, 238 Prep in Filter Gamma Spec Filter Lucas Cell Ra-226 Aloha Spec Thorium Aloha Soec Uranium Aloha Soec Polonium Electrolytic Tritium Tritium Carbon-14 Plutonium Annual Radiological Environmental Operating Report 2016

(.f.f..: 2s%' * (Note-il .. writixN* --*-outsI01::

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.' !

i** .... CRITERIA.;

66 0 109 0 0 0 1 0 69 0 73 0 78 0 90 0 0 0 2 0 4 0 6 0 4 0 5 0 44 0 59 0 58 0 83 0 106 0 145 0 3 0 4 0 0 0 1 0 0 0 1 0 3 0 4 0 11 0 16 0 75 0 76 0 2 0 2 0 2 0 6 0 6 0 6 0 3 0 3 0 73 0 0 0 60 0 68 0 8 0 8 0 0 0 1 0 7 0 22 0 310 0 320 0 6 0 13 0 8 0 12 0 3 0 7 0 9 0 14 0 1 0 1 0 6 0 14 0 2 0 7 0 3 0 4 0 4 0 4 0 75 0 90 0 6 0 12 0 8 0 15 0 ' .. _. :**-**** .... ,,:;' :-! .-_* .. ,, \.;. ,.: ! ' " 410 0 609 0 2 0 2 0 17 0 30 0 1074 0 1071 0 179 0 198 0 86 0 105 0 C-31 I l Donald C. Cook Nuclear Plant .. ; , .. ,****. 1, *-*. .. '*. **"o.* *** .. *Total 2oi6 * .. Chlorine-36 in Liquids Iodine-131 LSC Iron-55 Gamma Nickel 59 RAD A-022 Gamma Iodine 131 RAD A-013 Gamma Radium 228 RAD A-013 LSC Nickel 63 LSC Radon 222 Technetium-99 Gamma Spec Liquid RAD A-013 Alpha Spec Total U RAD A-011 LSC Selenium 79 Total Activity Aloha Spec Am243 Gamma Iodine-129 Gamma Iodine-131 ICP-MS Technetium-99 in Water Gas Flow Lead 210 Total Uranium KPA LSC Promethium 147 LSC, Rapid Strontium 89 and 90 Alpha Spec Polonium Alpha Spec Thorium Gas Flow Radium 228 Gas Flow Radium 228 Aloha Spec Plutonium LSC Sulfur 35 Aloha Spec Neptunium Aloha Soec Plutonium Alpha Spec Radium 226 Gas Flow Sr 2nd count Gas Flow Strontium 90 Gas Flow Strontium 90 Gas Flow Total Radium ICP-MS Technetium-99 Prep in Water ICP-MS Uranium-233, 234 in Liquid LSC Calcuim 45 Lucas Cell Radium 226 Lucas Cell Radium-226 Total Activity Screen Chlorine-36 in Liquids Aloha Spec Am241 Curium Gas Flow Total Strontium Gross Aloha Non Vol Beta LSC Phosphorus-32 Lucas Cell Radium 226 by Method Ra-04 ICP-MS Uranium-233 234 Prep in Liquid Annual Radiological Environmental Operating Report 2016 *. ,.*-: ** _ > Bias c+ i :is 0 Jo * .

criteria CNote :h ': ,*., wrtHtN **. * 'outsrr>E . 1' *

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' .. * 'cRITERlA*, ;; CRITERIA .. 7 0 7 0 7 0 4 0 155 0 198 0 26 0 30 0 4 0 4 0 5 0 5 0 212 0 247 0 19 0 20 0 472 0 497 0 697 0 747 0 21 0 35 0 30 0 28 0 2 0 2 0 14 0 23 0 102 0 132 0 21 0 21 0 19 0 17 0 27 0 27 0 58 0 119 0 19 0 22 0 9 0 10 0 3 0 2 0 181 0 236 0 417 0 469 0 23 0 24 0 313 0 404 0 11 0 11 0 136 0 187 0 38 0 49 0 24 0 42 0 165 0 180 0 462 0 479 0 1 0 1 0 57 0 72 0 19 0 17 0 9 0 13 0 11 0 11 0 428 0 458 0 5 0 13 0 2 0 2 0 17 0 19 0 295 0 402 0 72 0 76 0 983 0 1206 0 3 0 4 0 1 0 2 0 9 0 13 0 C-32 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 ; ..... ... ** .: .. -**.

-.WITHIN".'.*

WlrHIN'_.: . , .** * ; tiutERiA:

' CRITE*1t:i:A.,*

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Tritium in Drinkinq Water by EPA 906.0 1 0 1 Gamma Spec Liquid RAD A-013 with Ba, La 72 0 142 Gamma Soec Liauid RAD A-013 with Iodine 120 0 96 Gas Flow Strontium 89 & 90 5 0 2 ICP-MS Uranium-235, 236, 238 in Liquid 14 0 13 Gas Flow Total Alpha Radium 4 0 3 Gross Aloha Co-orecioitation 7 0 13 ICP-MS Uranium-235.

236, 238 Prep in Liquid 9 0 13 ICP-MS Uranium-234, 235 236, 238 in Liquid 69 0 69 Gross Alpha Beta (Americium Calibration)

Liquid 26 0 32 ICP-MS Uranium-234, 235 236. 238 Preo in Liauid 46 0 47 Aloha/Beta (Americium Calibration)

Drinkinq Water 23 0 17 . :. ';. *">" .-*. *. TISSUE*. .. . . ... ... ,--'.. .. *. ,.-*. *..*. : Carbon-14 1 0 1 Gamma Nickel 59 RAD A-022 1 0 6 Gamma Spec Solid RAD A-013 45 0 54 LSC Nickel 63 1 0 1 LSC Plutonium 1 0 1 Technetium-99 1 0 1 Gamma Iodine-129 1 0 1 Gas Flow Lead 210 1 0 1 Alpha Spec Uranium 7 0 10 Alpha Spec Thorium 1 0 0 Alpha Spec Plutonium 10 0 11 Gas Flow Sr 2nd count 9 0 9 Gas Flow Strontium 90 12 0 12 Alpha Spec Am241 Curium 4 0 4 Gas Flow Total Strontium 7 0 7 Gamma Spec Solid RAD A-013 with Iodine 11 0 11 Gross Alpha/Beta 2 0 3 -*. .... :_*.-:.: .* . .,. . . .... ** .* ..... : .. *' , .. **,_,,.: ... : .. ,:*;; .: > ... -: '. .. .:c *-** .*;-...... . LSC Iron-55 7 0 5 LSC Nickel 63 7 0 6 Gas Flow Total Strontium 10 0 9 Gross Alpha Non Vol Beta 9 0 8 Gamma Spec Liquid RAD A-013 with Iodine 9 0 9 ... * --*:---: . : Carbon-14 4 0 4 Gamma Nickel 59 RAD A-022 1 0 1 Gamma Spec Solid RAD A-013 24 0 25 LSC Nickel 63 1 0 1 LSC Plutonium 1 0 1 Technetium-99 2 0 2 Tritium 10 0 10 C-33 o,u'rsioE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Donald C. Cook Nuclear Plant '"'., ., Alpha Spec Am243 Gamma Iodine-129 Gas Flow Lead 210 Total Uranium KPA Aloha Spec Uranium Aloha Spec Thorium Alpha Spec Plutonium Alpha Spec Neptunium Gas Flow Sr 2nd count Gas Flow Strontium 90 Gas Flow Total Radium Aloha Spec Am241 Curium Gamma Soec Solid RAD A-013 with Iodine Gamma Spec Solid RAD A-013 (pCi/Sample)

Alpha Spec Am241 (pCi/Sample)

ICP-MS Uranium-234, 235, 236, 238 in Solid Alpha Spec Uranium Gross Alpha/Beta Alpha Spec Plutonium

, Annual Radiological Environmental Operating Report 2016 r+. I -

Ctiferia (Note *fr . wfrHiN :_: oursloE ** *

w1tHxN.: -* oufsroe *

. bul-E'itiA

CRITERIA:*

0 0 1 0 1 0 0 0 4 0 4 0 4 0 4 0 23 0 26 0 5 0 8 0 14 0 15 0 1 0 1 0 7 0 7 0 13 0 11 0 1 0 3 0 6 0 4 0 78 0 82 0 1 0 1 0 2 0 2 0 4 0 2 0 0 0 2 0 2 0 4 0 0 0 2 0 Gas Flow Strontium 90 4 0 2 0 ICP-MS Uranium-234 235. 236, 238 Prep in Solid 2 0 1 0 Gamma Iodine 131 RAD A-013 369 0 419 0 Gamma Soec Filter RAD A-013 0 0 1 0 Gamma Iodine-129 5 0 4 0 Alpha Spec Uranium 0 0 1 0 Alpha Spec Plutonium 0 0 2 0 Aloha Spec Am241Curium 0 0 2 0 Carbon-14 12 0 12 0 Direct Count-Gross Alpha/Beta 1 0 0 0 Carbon-14 (Ascarite/Soda Lime Filter per Liter) 28 0 28 0 Gamma Iodine 129 12 0 12 0 Gamma Spec Filter 12 0 12 0 -::* *,<: :;"*' :'.. ',' ,-'--,_ ,., __ ._ --* *i. " -,'/*:.-'; .. :*:.* *, ... :*: "' -.. DRINKING WATER . ---_* --Alpha Spec Uranium 1 0 1 0 Tritium 35 0 33 0 Carbon-14 1 0 1 0 Iodine-131 2 0 2 0 LSC Iron-55 12 0 13 0 LSC Nickel 63 13 0 14 0 LSC Radon 222 27 0 35 0 Gamma Spec Liauid RAD A-013 30 0 53 0 Gamma Iodine-129 4 0 4 0 Gamma Iodine-131 26 0 26 0 Total Uranium KPA 9 0 20 0 Alpha Spec Polonium 1 0 1 0 Gas Flow Radium 228 32 0 25 0 C-34 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 .. . . **-.*** .. ... .. . -..* . ., Blas,Ci'ite'i'la*

c-1:-/ . Precisi<m CNote ll' '.* ... 'i; , o,: ** : w:tri-111\l: , :::i>utsioe . W.rfHIN

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.. Aloha Spec Plutonium 1 0 1 0 Gas Flow Sr 2nd count 12 0 13 0 Gas Flow Strontium 90 11 0 9 0 LSC Calcuim 45 2 0 2 0 Lucas Cell Radium-226 46 0 49 0 Alpha Spec Am241 Curium 1 0 1 0 Gas Flow Total Strontium 10 0 12 0 Gross Alpha Non Vol Beta 334 0 265 0 LSC Phosphorus-32 2 0 2 0 Tritium in Drinkinq Water by EPA 906.0 47 0 58 0 Gamma Spec Liquid RAD A-013 with Ba La 21 0 71 0 Gas Flow Strontium 89 & 90 21 0 10 0 Gross Alpha Co-precipitation 136 0 100 0 Aloha/Beta (Americium Calibration)

Drinkinq Water 11 0 11 0 ECLS-R-GA NJ 48 Hr Rapid Gross Aloha 5 0 5 0 Tota! 17075 20165 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 2016 Table C-5 2016 Corrective Action Report Summary CORRECTIVE ACTION ID# & PE FAILURE CARR160229-1005 ISO Documentation of PT Failures in RAD 104 for Cesium-137 and Gross Alpha. DISPOSITION Root Cause Analysis Cesium-137 (Cs-137) EPA 901.1, HASL 300 Ga-01, DOE 4.5.2.3 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 high 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 102%. 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.

5. A remedial sample from the QR030716U study was performed for Cs-137. The result fell well within the acceptance range for the study. Gross Alpha EPA 00-02, EPA 900.0 and EPA 9310 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 high 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 102% (EPA 00-02) and 113% (EPA 900.0 and EPA 9310). 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. The batch quality control samples were reviewed and found to be compliant.

The LCS Sample C-36

,-------Donald C. Cook Nuclear Plant CORRECTIVE ACTION ID# & PE FAILURE CARR 160519-1015 ISO Documentation of PT Failures in MRAD-24 for Total Uranium in Water Annual Radiological Environmental Operating Report 2016 DISPOSITION duplicates were also prepared and counted along with the reported results. The results for both fell within the methods' acceptance ranges for duplicates.

5. The sample was re-analyzed in duplicate following EPA 00-02 and results (80 pCi/L and 82 pCi/L) that fell within the acceptance range were obtained.

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 was 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 (RAD-103) was successfully analyzed for this matrix. Root Cause Analysis Uranium-Total ASTM 05174-91, ASTM 05174-97, ASTM 05174-02 This failure was due to a data entry error. The Uranium-Total (mass) concentration in ug/L was inadvertently reported as the Uranium-Total in pCi/L. The cause of this failure was determined to be human error. The Uranium-Total (mass) result was inadvertently entered as the result for Uranium-Total (pCi/Kg).

These results are hand entered into the PT provider's database.

Permanent Corrective/Preventive Actions or Improvements

A parmname synonym was entered into Alpha Urns to distinguish Uranium-Total activity from Uranium-Total (mass) concentration.

This change drastically reduced the potential for such errors to occur in the future A second PT (MRAD-25) was successfully analyzed for this matrix. C-37 Donald C. Cook Nuclear Plant CORRECTIVE ACTION ID# & PE FAILURE CARR160602-i 025 ISO Documentation of PT Failures in MAPEP 34 lron-55 in soil and Radium-226 in water. CARR 160830-1052 ISO Documentation of PT Failures in RAD-106 for Strontium-89 in drinking water. Annual Radiological Environmental Operating Report 2016 DISPOSITION Root Cause Analysis of lron-55 in soil and Radium-226 in water: 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 high 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 103%. 2. Laboratory control data were also reviewed for trends. None were noted. 3. The instrument calibrations were reviewed for positive biases that could have attributed to this failure. None were noted. 4. Sample duplicates were also prepared and counted along with the reported result. All results fell within the method's acceptance range for duplicates.

Permanent Corrective/Preventive Actions or Improvements:

Fe-55 After a review of the data, it was determined that not enough sample was used to* accurately quantitate this analyte. Per the instructions, the sample contained

<2000 Bq/kg of this isotope. The lab mistakenly did not use a large enough aliquot and count time to achieve a result lower than 2000 Bq/kg. MAPEP-16-MaW34 Radium-226 In the future a more sensitive method will be used to determine the Ra-226 activity.

A second PT (MAPEP 35) was successfully analyzed for both matrices.

Root Cause Analysis of Strontium-89 (Sr-89) EPA 905.0 Strontium-89 After a thorough review of all data, a definite reason for the failure could not be determined.

However, it is suspected that C-38 Donald C. Cook Nuclear Plant CORRECTIVE ACTION ID# & PE FAILURE Annual Radiological Environmental Operating Report 2016 DISPOSITION the failure was due to a random laboratory error. 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 sample was reviewed and found to be compliant.

The LCS recovered at 105%. 2. Two sample duplicates were also prepared with the batch. Both results (50.7 pCi/L and 57.0 pCi/L) fell within the PT acceptance range Permanent Corrective/Preventive Actions or Improvements The laboratory must assume unidentified random errors caused the biases observed with the results because all quality control criteria were met for each batch. A review of the recoveries was also performed to ensure that the recoveries were not trending high or low for each failure. No trends were noted C-39 T !

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Environmental TLDs Environmental dosimetry services for the reporting period of January -December, 2016 were provided by the Environmental Dosimetry Company (EDC), Sterling, Massachusetts.

The TLD systems at the Environmental Dosimetry Company (EDC) are calibrated and operated to ensure consistent and accurate evaluation of TLDs. The quality of the dosimetric 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 2016(1), (2) Panasonic Environmental 72 100 (1>This table summarizes results of tests conducted by EDC. (ZlEnvironmental dosimeter results are free in air. C-40 * % Passed P*recisicfo

.'. * ' _ -. , triterikj

,,." * -100 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Table C-7 Mean Dosimeter Analyses (N=6) JANUARY-DECEMBER 201s<1>* (2> .. . ,. . . . . . . ... : ... *standard

. .. Tolerance Lim!t

bate :

Mean Bias %; ... ,.. . : Deviation%

.. l' +/-15% ... . . 4/22/2016 40 3.5 0.7 Pass 4/29/2016 80 1.8 0.7 Pass 5/10/2016 70 1.8 1.8 Pass 7/25/2016 33 2.4 1.5 Pass 8/2/2016 56 2.4 1.6 Pass 8/2/2016 123 0.7 1.4 Pass 10/25/2016 28 2.9 1.0 Pass 10/29/2016 93 3.2 1.8 Pass 11/6/2016 61 0.0 1.6 Pass 1/30/2017 39 1.4 2.5 Pass 1/31/2017 76 2.2 1.3 Pass 1/31/2017 101 -1.7 1.5 Pass <1 l This table summarizes results of tests conducted by EDC for TLDs issued in 2016. <2 l Environmental dosimeter results are free in air. Table C-8 Summary of Independent Blind Spike Dosimeter Testing JANUARY-DECEMBER 201s<1>* <2> . -.* ' ..... , ..

Period,. .... '" ,. *c1ieht >** * * *

stari'dard l\.liean Bias% ** *. ,

.%, 1st Qtr. 2016 Millstone

-0.2 1.0 2nd Qtr.2016 Millstone

-3.4 3.0 2na Qtr.2016 Seabrook 1.8 0.8 3ra Qtr. 2016 Millstone 3.0 2.4 4th Qtr.2016 Millstone

.0.9 3.9 4th Qtr.2016 Seabrook -0.2 0.7 <1 l Performance criteria are +/-30%. <2 l Blind spike irradiations using Cs-137 C-41 Pai:;s/fail Pass Pass Pass Pass Pass Pass Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 APPENDIX D 2016 DATA

SUMMARY

D-1 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP NBF 388922001 1/6/2016 BETA 2.79E-02 l.56E-03 l.19E-03 AP SBN 388922002 1/6/2016 BETA 2.96E-02 l.61E-03 l.19E-03 AP DOW 388922003 1/6/2016 BETA 2.55E-02 l.53E-03 l.24E-03 AP COL 388922004 1/6/2016 BETA 2.SOE-02 1.62E-03 l.27E-03 AP ONS-1 388922005 1/6/2016 BETA 2.64E-02 l.69E-03 AP ONS-2 388922006 1/6/2016 BETA 2.76E-02 l.60E-03 l.26E-03 AP ONS-3 388922007 1/6/2016 BETA 2.64E-02 l.55E-03 l.23E-03 AP ONS-4 388922008 1/6/2016 BETA 2.74E-02 l.56E-03 l.21E-03 AP ONS-5 388922009 1/6/2016 BETA 2.89E-02 l.64E-03 l.26E-03 AP ONS-6 388922010 1/6/2016 BETA 2.93E-02 l.61E-03 l.21E-03 AP NBF 389483001 1113/2016 BETA 2.30E-02 l.47E-03 l.26E-03 AP SBN 389483002 1/13/2016 BETA 2.55E-02 1.55E-03 l.27E-03 AP DOW 389483003 1113/2016 BETA 2.20E-02 1.44E-03 l.27E-03 AP COL 389483004 1113/2016 BETA 2.26E-02 l.46E-03 l.27E-03 AP ONS-1 389483005 1113/2016 BETA 2.46E-02 l.50E-03 l.24E-03 AP ONS-2 389483006 1113/2016 BETA 2.46E-02 l.52E-03 l.26E-03 AP ONS-3 389483007 1113/2016 BETA 1.93E-02 1.38E-03 l.31E-03 AP ONS-4 389483008 1/13/2016 BETA 2.06E-02 1.35E-03 l.19E-03 AP ONS-5 389483009 1113/2016 BETA 2.67E-02 l.58E-03 l.26E-03 AP ONS-6 389483010 1/13/2016 BETA 2.25E-02 l.43E-03 l.22E-03 AP NBF 389873001 1/20/2016 BETA 3.54E-02 l.86E-03 l.23E-03 AP SBN 389873002 1/20/2016 BETA 3.12E-02 l.74E-03 l.23E-03 AP DOW 389873003 1/20/2016 BETA 2.93E-02 1.64E-03 l.16E-03 AP COL 389873004 1/20/2016 BETA 3.14E-02 1.72E-03 l.20E-03 AP ONS-1 389873005 1120/2016 BETA 2.96E-02 1.65E-03 l.16E-03 AP ONS-2 389873006 1/20/2016 BETA 2.73E-02 l.61E-03 l.20E-03 AP ONS-3 389873007 1/20/2016 BETA 3.0SE-02 1.71E-03 l.21E-03 AP ONS-4 389873008 1120/2016 BETA 2.34E-02 1.48E-03 l.18E-03 AP ONS-5 389873009 1120/2016 BETA 2.81E-02 l.61E-03 l.17E-03 AP ONS-6 389873010 1/20/2016 BETA 2.60E-02 l.55E-03 l.16E-03 AP NBF 390288001 1/27/2016 BETA 2.llE-02 l.45E-03 l.28E-03 AP SBN 390288002 1/27/2016 BETA 2.55E-02 l.57E-03 l.26E-03 AP DOW 390288003 1127/2016 BETA 2.40E-02 l.53E-03 l.26E-03 AP COL 390288004 1/27/2016 BETA 2.22E-02 l.43E-03 l.19E-03 AP ONS-1 390288005 1/27/2016 BETA 2.52E-02 l.59E-03 l.29E-03 AP ONS-2 390288006 1/27/2016 BETA 2.lOE-02 l.45E-03 1.28E-03 AP ONS-3 390288007 1/27/2016 BETA 2.36E-02 l.51E-03 l.25E-03 AP ONS-4 390288008 1/27/2016 BETA 2.32E-02 l.55E-03 l.33E-03 AP ONS-5 390288009 1/27/2016 BETA 2.24E-02 l.49E-03 l.28E-03 AP ONS-6 390288010 1/27/2016 BETA 2.18E-02 l.45E-03 l.25E-03 AP NBF 390825001 2/3/2016 BETA 2.6IE-02 l.63E-03 1.38E-03 AP SBN 390825002 2/3/2016 BETA 2.37E-02 l.54E-03 1.36E-03 AP DOW 390825003 2/3/2016 BETA 2.27E-02 l.51E-03 l.36E-03 AP COL 390825004 2/3/2016 BETA 2.0IE-02 l.39E-03 l.29E-03 AP ONS-1 390825005 2/3/2016 BETA 2.38E-02 l.53E-03 1.34E-03 AP ONS-2 390825006 2/3/2016 BETA 2.20E-02 l.50E-03 1.38E-03 AP ONS-3 390825007 2/3/2016 BETA 2.34E-02 l.53E-03 1.35E-03 AP ONS-4 390825008 2/3/2016 BETA 2.51E-02 l.59E-03 1.37E-03 AP ONS-5 390825009 2/3/2016 BETA 2.58E-02 l.62E-03 l.38E-03 AP ONS-6 390825010 2/3/2016 BETA 2.15E-02 l.46E-03 1.34E-03 0-2 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP NBF 391285001 2/10/2016 BETA 2.05E-02 l.37E-03 l.24E-03 AP SBN 391285002 2/10/2016 BETA 2.26E-02 l.41E-03 1.20E-03 AP DOW 391285003 2/10/2016 BETA l.68E-02 l.21E-03 l.17E-03 AP COL 391285004 2/10/2016 BETA 2.16E-02 l.40E-03 l.23E-03 AP ONS-1 391285005 2/10/2016 BETA 2.25E-02 1.40E-03 1.19E-03 AP ONS-2 391285006 2/10/2016 BETA l.83E-02 l.28E-03 l.21E-03 AP ONS-3 391285007 2/10/2016 BETA 2.04E-02 l.38E-03 l.26E-03 AP ONS-4 391285008 2/10/2016 BETA 2.08E-02 l.36E-03 l.20E-03 AP ONS-5 391285009 2/10/2016 BETA l.96E-02 l.32E-03 l.20E-03 AP ONS-6 391285010 2/10/2016 BETA 2.09E-02 l.39E-03 l.24E-03 AP NBF 391696001 2/17/2016 BETA 2.21E-02 l.46E-03 1.18E-03 AP SBN 391696002 2/17/2016 BETA l.57E-02 l.24E-03 1.17E-03 AP DOW 391696003 2/17/2016 BETA l.86E-02 1.34E-03 l.18E-03 AP COL 391696004 2/17/2016 BETA l.84E-02 l.3 lE-03 1.14E-03 AP ONS-1 391696005 2/17/2016 BETA l.58E-02 l.20E-03 l.lOE-03 AP ONS-2 391696006 2/17/2016 BETA l.49E-02 l.19E-03 1.15E-03 AP ONS-3 391696007 2/17/2016 BETA 1.66E-02 l.25E-03 1.13E-03 AP ONS-4 391696008 2/17/2016 BETA l.55E-02 l.19E-03 l.lOE-03 AP ONS-5 391696009 2/17/2016 BETA 1.70E-02 l.24E-03 l.lOE-03 AP ONS-6 391696010 2/17/2016 BETA l.71E-02 1.28E-03 l.16E-03 AP NBF 396305001 3/30/2016 Ac-228 -3.02E-04 7.34E-04 2.48E-03 u AP NBF 396305001 3/30/2016 Ag-108111 9.34E-05 l.47E-04 4.95E-04 u AP NBF 396305001 3/30/2016 Ag-110111 3.18E-04 2.45E-04 9.00E-04 u AP NBF 396305001 3/30/2016 Ba-140 -2.67E-02 4.15E-02 1.23E-Ol u AP NBF 396305001 3/30/2016 Be-7 l.30E-Ol l.15E-02 9.88E-03 AP NBF 396305001 3/30/2016 Ce-141 -l.llE-03 9.78E-04 2.81E-03 u AP NBF 396305001 3/30/2016 Ce-144 -1.12E-03 8.75E-04 2.46E-03 u AP NBF 396305001 3/30/2016 Co-57 -8.20E-05 l.08E-04 3.28E-04 u AP NBF 396305001 3/30/2016 Co-58 -l.52E-04 3.02E-04 9.25E-04 u AP NBF 396305001 3/30/2016 Co-60 2.09E-04 2.33E-04 8.41E-04 u AP NBF 396305001 3/30/2016 Cr-51 -3.43E-04 7.68E-03 2.54E-02 u AP NBF 396305001 3/30/2016 Cs-134 -4.86E-05 l.91E-04 6.llE-04 u AP . NBF 396305001 3/30/2016 Cs-137 -2.44E-05 l.05E-04 3.38E-04 u AP NBF 396305001 3/30/2016 Fe-59 9.16E-04 l.22E-03 4.25E-03 u AP NBF 396305001 3/30/2016 I-131 1.70E-01 l.56E-01 O.OOE+OO U1 AP NBF 396305001 3/30/2016 K-40 4.00E-03 2.47E-03 9.50E-03 u AP NBF 396305001 3/30/2016 La-140 -l.50E-02 I.87E-02 5.31E-02 u AP NBF 396305001 3/30/2016 Mn-54 -3.13E-04 2.04E-04 5.02E-04 U AP NBF 396305001 3/30/2016 Nb-95 -6.67E-05 2.29E-04 7.21E-04.

u AP NBF 396305001 3/30/2016 Ru-103 -2.63E-04 5.45E-04 l.41E-03 u AP NBF 396305001 3/30/2016 Ru-106 l.04E-03 l.72E-03 5.58E-03 u AP NBF 396305001 3/30/2016 Sb-124 -4.07E-04 8.53E-04 2.45E-03 u AP NBF 396305001 3/30/2016 Sb-125 1.19E-04 3.64E-04 l.22E-03 u AP NBF 396305001 3/30/2016 Se-75 6.70E-06 2.91E-04 9.76E-04 U AP NBF 396305001 3/30/2016 Th-228 8.34E-04 4.48E-04 l.OlE-03 u AP NBF 396305001 3/30/2016 Zn-65 -4. l 7E-04 5.00E-04 l.39E-03 u AP NBF 396305001 3/30/2016 Zr-95 5.26E-04 5.93E-04 2.12E-03 u AP SBN 396305002 3/30/2016 Ac-228 5.84E-04 5.46E-04 l.90E-03 u AP SBN 396305002 3/30/2016 Ag-108111 -l.53E-04 l.16E-04 3.32E-04 U AP SBN 396305002 3/30/2016 Ag-110111 -l.57E-04 l.92E-04 5.76E-04 U D-3 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP SBN 396305002 3/30/2016 Ba-140 6.77E-02 2.22E-02 8.71E-02 u AP SBN 396305002 3/30/2016 Be-7 9.82E-02 8.93E-03 9.llE-03 AP SBN 396305002 3/30/2016 Ce-141 -6.41E-04 8.66E-04 2.62E-03 u AP SBN 396305002 3/30/2016 Ce-144 1.61E-03 7.57E-04 2.39E-03 u AP SBN 396305002 3/30/2016 Co-57 -9.73E-06 9.41E-05 3.03E-04 u AP SBN 396305002 3/30/2016 Co-58 -5.02E-04 2.79E-04 6.48E-04 u AP SBN 396305002 3/30/2016 Co-60 9.49E-05 1.66E-04 5.74E-04 u AP SBN 396305002 3/30/2016 Cr-51 -1.28E-02 7.94E-03 2.llE-02 u AP SBN 396305002 3/30/2016 Cs-134 l.59E-04 l.63E-04 5.55E-04 u AP SBN 396305002 3/30/2016 Cs-137 7.0lE-05 l.31E-04 4.45E-04 u AP SBN 396305002 3/30/2016 Fe-59 4.37E-04 7.89E-04 2.70E-03 u AP SBN 396305002 3/30/2016 I-131 -l.62E-02

-1.07E-Ol O.OOE+OO u AP SBN. 396305002 3/30/2016 K-40 4.42E-03 l.57E-03 5.04E-03 u AP SBN 396305002 3/30/2016 La-140 -7.88E-03 l.llE-02 3.29E-02 u AP SBN 396305002 3/30/2016 Mn-54 l.84E-04 1.60E-04 5.61E-04 u AP SBN 396305002 3/30/2016 Nb-95 2.77E-05 2.75E-04 9.02E-04 u AP SBN 396305002 3/30/2016 Ru-103 l.04E-03 .5.08E-04 l.67E-03 u AP SBN 396305002 3/30/2016 Ru-106 -2.08E-03 l.46E-03 4.08E-03 u AP SBN 396305002 3/30/2016 Sb-124 2.39E-04 7.80E-04 2.68E-03 u AP SBN 396305002 3/30/2016 Sb-125 -7.60E-05 3.49E-04 l.13E-03 u AP SBN 396305002 3/30/2016 Se-75 4.15E-04 2.45E-04 8.0lE-04 u AP SBN 396305002 3/30/2016 Th-228 4.54E-04 3.95E-04 7.32E-04 u AP SBN 396305002 3/30/2016 Zn-65 2.14E-04 3.55E-04 1.21E-03 u AP SBN 396305002 3/30/2016 Zr-95 -5.00E-04 5.36E-04 1.56E-03 u AP DOW 396305003 3/30/2016 Ac-228 -8.86E-05 5.85E-04 l.97E-03 u AP DOW 396305003 3/30/2016 Ag-108m -9.30E-05 l.04E-04 3.02E-04 u AP DOW 396305003 3/30/2016 Ag-l!Om -3.65E-05 2.15E-04 6.88E-04 u AP DOW 396305003 3/30/2016 Ba-140 3.17E-02 3.23E-02 l.15E-01 u AP DOW 396305003 3/30/2016 Be-7 l.17E-Ol 9.79E-03 9.57E-03 AP DOW 396305003 3/30/2016 Ce-141 l.16E-03 7.64E-04 2.48E-03 u AP DOW 396305003 3/30/2016 Ce-144 -4.82E-04 6.37E-04 l.91E-03 u AP DOW 396305003 3/30/2016 Co-57 l.42E-04 9.54E-05 3.lOE-04 u AP DOW 396305003 3/30/2016 Co-58 -4.0lE-04 2.38E-04 5.20E-04 u AP DOW 396305003 3/30/2016 Co-60 6.52E-05 9.99E-05 3.71E-04 u AP DOW 396305003 3/30/2016 Cr-51 -3.57E-03 6.29E-03 l.98E-02 u AP DOW 396305003 3/30/2016 Cs-134 -5.50E-05 1.02E-04 3.02E-04 u AP DOW 396305003 3/30/2016 Cs-137 -3.53E-05 l.35E-04 4.43E-04 u AP DOW 396305003 3/30/2016 Fe-59 -8.lOE-04

8.44E-04 2.24E-03 u AP DOW 396305003 3/30/2016 I-131 -l.33E-Ol l.06E-01 O.OOE+OO u AP DOW 396305003 3/30/2016 K-40 UOE-03 2.04E-03 7.63E-03 u AP DOW 396305003 3/30/2016 La-140 -l.08E-02 l.30E-02 3.55E-02 u AP DOW 396305003 3/30/2016 Mn-54 2.03E-05 l.51E-04 5.02E-04 u AP DOW 396305003 3/30/2016 Nb-95 4.94E-05 3.08E-04 l.03E-03 u AP DOW 396305003 3/30/2016 Ru-103 -l.23E-04 4.04E-04 1.25E-03 u AP DOW 396305003 3/30/2016 Ru-106 l.69E-03 l.14E-03 4.llE-03 u AP DOW 396305003 3/30/2016 Sb-124 -5.70E-04 5.70E-04 l.25E-03 u AP DOW 396305003 3/30/2016 Sb-125 -2.91E-04 3.28E-04 9.58E-04 u AP DOW 396305003 3/30/2016 Se-75 -4.55E-05 2.61E-04 7.52E-04 u AP DOW 396305003 3/30/2016 Th-228 2.83E-04 l.94E-04 5.86E-04 u AP DOW 396305003 3/30/2016 Zn-65 -l.OlE-04 3.72E-04 l.2IE-03 u D-4 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP DOW 396305003 3/30/2016 Zr-95 4.60E-04 5.44E-04 1.90E-03 u AP COL 396305004 3/30/2016 Ac-228 3.69E-04 l.23E-03 4.22E-03 u AP COL 396305004 3/30/2016 Ag-108m -2.SOE-04 1.90E-04 4.83E-04 u AP COL 396305004 3/30/2016 Ag-llOm -5.02E-04 4.28E-04 l.llE-03 u AP COL 396305004 3/30/2016 Ba-140 l.SIE-02 6.47E-02 2.20E-01 u AP COL 396305004 3/30/2016 Be-7 1.04E-01 l.24E-02 l.63E-02 AP COL 396305004 3/30/2016 Ce-141 5.36E-04 l.1 IE-03 3.61E-03 u AP COL 396305004 3/30/2016 Ce-144 -6.28E-05 9.57E-04 3.05E-03 u AP COL 396305004 3/30/2016 Co-57 -4.22E-05 l.27E-04 3.97E-04 u AP COL 396305004 3/30/2016 Co-58 -l.62E-04 4.69E-04 l.45E-03 u AP COL 396305004 3/30/2016 Co-60 8.56E-04 3.55E-04 1.30E-03 u AP COL 396305004 3/30/2016 Cr-51 l.73E-02 l.19E-02 4.04E-02 u AP COL 396305004 3/30/2016 Cs-134 -4.66E-04 3.12E-04 7.64E-04 u AP COL 396305004 3/30/2016 Cs-137 -5.31E-04 3.20E-04 6.04E-04 u AP COL 396305004 3/30/2016 Fe-59 -3.37E-04 1.68E-03 5.44E-03 u AP COL 396305004 3/30/2016 I-131 2.92E-01 l.93E-01 O.OOE+OO UI AP COL 396305004 3/30/2016 K-40 6.90E-03 4.0SE-03 1.54E-02 u AP COL 396305004 3/30/2016 La-140 3.47E-02 2.88E-02 1.07E-01 u AP COL 396305004 3/30/2016 Mn-54 2.53E-04 3.31E-04 1.14E-03 u AP COL 396305004 3/30/2016 Nb-95 -3.44E-04 5.06E-04 1.49E-03 u AP COL 396305004 3/30/2016 Ru-103 6.67E-04 7.62E-04 2.70E-03 u AP COL 396305004 3/30/2016 Ru-106 -3.02E-03 2.24E-03 5.92E-03 u AP COL 396305004 3/30/2016 Sb-124 -4.96E-04 9.24E-04 2.54E-03 u AP COL 396305004 3/30/2016 Sb-125 -3.70E-04 5.95E-04 1.79E-03 u AP COL 396305004 3/30/2016 Se-75 7.31E-05 3.71E-04 1.25E-03 u AP COL 396305004 3/30/2016 Th-228 7.22E-04 3.91E-04 1.34E-03 u AP COL 396305004 3/30/2016 Zn-65 -7.00E-04 8.17E-04 1.90E-03 u AP COL 396305004 3/30/2016 Zr-95 -6.90E-04 9.71E-04 2.87E-03 u AP ONS-1 396305005 3/30/2016 Ac-228 5.58E-04 5.06E-04 2.09E-03 u AP ONS-1 396305005 3/30/2016 Ag-108m 1.37E-04 9.62E-05 3.28E-04 u AP ONS-1 396305005 3/30/2016 Ag-l!Om -1.71E-04 2.41E-04 7.38E-04 u AP ONS-1 396305005 3/30/2016 Ba-140 1.03E-01 6.79E-02 1.22E-01 u AP ONS-1 396305005 3/30/2016 Be-7 9.61E-02 8.87E-03 9.42E-03 AP ONS-1 396305005 3/30/2016 Ce-141 2.00E-04 7.09E-04 2.33E-03 u AP ONS-1 396305005 3/30/2016 Ce-144 -7.0SE-04 6.95E-04 2.07E-03 u AP ONS-1 396305005 3/30/2016 Co-57 -5.87E-05 8.07E-05 2.48E-04 u AP ONS-1 396305005 3/30/2016 Co-58 -4.38E-04 2.37E-04 5.14E-04 u AP ONS-1 396305005 3/30/2016 Co-60 1.97E-04 1.70E-04 6.53E-04 u AP ONS-1 396305005 3/30/2016 Cr-51 -1.49E-03 5.73E-03 1.89E-02 u AP ONS-1 396305005 3/30/2016 Cs-134 3.12E-04 1.68E-04 5.98E-04 u AP ONS-1 396305005 3/30/2016 Cs-137 5.29E-05 1.03E-04 3.49E-04 u AP ONS-1 396305005 3/30/2016 Fe-59 -1.50E-04 6.54E-04 2.07E-03 u AP ONS-1 396305005 3/30/2016 I-131 -2.15E-02 1.15E-01 O.OOE+OO u AP ONS-1 396305005 3/30/2016 K-40 -1.95E-03 1.85E-03 5.94E-03 u AP ONS-1 396305005 3/30/2016 La-140 -2.95E-03 1.05E-02 3.34E-02 u AP ONS-1 396305005 3/30/2016 Mn-54 1.87E-05 l.25E-04 4.28E-04 u AP ONS-1 396305005 3/30/2016 Nb-95 2.35E-05 3.07E-04 1.02E-03 u AP ONS-1 396305005 3/30/2016 Ru-103 -4.77E-04 4.88E-04 1.43E-03 u AP ONS-1 396305005 3/30/2016 Ru-106 -6.62E-04 l.48E-03 4.60E-03 u AP ONS-1 396305005 3/30/2016 Sb-124 -4.63E-04 7.42E-04 2.17E-03 u D-5 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-1 396305005 3/30/2016 Sb-125 6.06E-04 3.36E-04 l.16E-03 u AP ONS-1 396305005 3/30/2016 Se-75 1.97E-04 2.24E-04 7.78E-04 u AP ONS-1 396305005 3/30/2016 Th-228 3.12E-04 2.65E-04 6.99E-04 u AP ONS-1 396305005 3/30/2016 Zn-65 -6.07E-04 3.45E-04 7.04E-04 u AP ONS-1 396305005 3/30/2016 Zr-95 -9.54E-05 4.92E-04 l.63E-03 u AP ONS-2 396305006 3/30/2016 Ac-228 -7.98E-04 7.00E-04 2.0lE-03 u AP ONS-2 396305006 3/30/2016 Ag-108m -1.91E-05 l.03E-04 3.33E-04 u AP ONS-2 396305006 3/30/2016 Ag-llOm -5.03E-06 2.63E-04 8.59E-04 u AP ONS-2 396305006 3/30/2016 Ba-140 -2.39E-02 3.33E-02 9.71E-02 u AP ONS-2 396305006 3/30/2016 Be-7 l.06E-01 9.36E-03 1.04E-02 AP ONS-2 396305006 3/30/2016 Ce-141 -4.51E-04 8.42E-04 2.60E-03 u AP ONS-2 396305006 3/30/2016 Ce-144 4.42E-04 6.94E-04 2.38E-03 u AP ONS-2 396305006 3/30/2016 Co-57 6.73E-06 8.69E-05 2.93E-04 u AP ONS-2 396305006 3/30/2016 Co-58 -l.91E-04 3.18E-04 9.61E-04 u AP ONS-2 396305006 3/30/2016 Co-60 l.91E-04 l.39E-04 5.52E-04 u AP ONS-2 396305006 3/30/2016 Cr-51 3.97E-03 8.16E-03 2.80E-02 u AP ONS-2 396305006 3/30/2016 Cs-134 -l.97E-04 1.50E-04 3.68E-04 u AP ONS-2 396305006 3/30/2016 Cs-137 LllE-04 l.39E-04 4.95E-04 u AP ONS-2 396305006 3/30/2016 Fe-59 -l.29E-03 9.54E-04 2.30E-03 u AP ONS-2 396305006 3/30/2016 I-131 9.69E-02 l.26E-Ol O.OOE+OO UI AP ONS-2 396305006 3/30/2016 K-40 1.80E-03 2.28E-03 8.68E-03 u AP ONS-2 396305006 3/30/2016 La-140 6.83E-03 l.66E-02 5.87E-02 u AP ONS-2 396305006 3/30/2016 Mn-54 -1.58E-04 2.18E-04 5.27E-04 u AP ONS-2 396305006 3/30/2016 Nb-95 3.97E-04 2.93E-04 1.0lE-03 u AP ONS-2 396305006 3/30/2016 Ru-103 -1.0lE-03 5.26E-04 l.16E-03 u AP ONS-2 396305006 3/30/2016 Ru-106 5.26E-04 l.27E-03 4.41E-03 u AP ONS-2 396305006 3/30/2016 Sb-124 -6.46E-04 l.12E-03 3.35E-03 u AP ONS-2 396305006 3/30/2016 Sb-125 9.61E-05 3.46E-04 l.03E-03 u AP ONS-2 396305006 3/30/2016 Se-75 -2.23E-04 2.52E-04 7.44E-04 u AP ONS-2 396305006 3/30/2016 Th-228 l.llE-04 2.34E-04 7.59E-04 u AP ONS-2 396305006 3/30/2016 Zn-65 3.SOE-05 4.15E-04 l.40E-03 u AP ONS-2 396305006 3/30/2016 Zr-95 -5.69E-04 6.44E-04 l.48E-03 u AP ONS-3 396305007 3/30/2016 Ac-228 2.00E-04 5.60E-04 2.07E-03 u AP ONS-3 396305007 3/30/2016 Ag-108m 2.60E-05 9.88E-05 3.30E-04 u AP ONS-3 396305007 3/30/2016 Ag-llOm -l.59E-04 1.92E-04 5.75E-04 u AP ONS-3 396305007 3/30/2016 Ba-140 2.18E-03 3.20E-02 8.95E-02 u AP ONS-3 396305007 3/30/2016 Be-7 1.00E-01 9.36E-03 8.71E-03 AP ONS-3 396305007 3/30/2016 Ce-141 2.06E-04 7.45E-04 2.40E-03 u .AP ONS-3 396305007 3/30/2016 Ce-144 3.06E-04 6.93E-04 2.27E-03 u AP ONS-3 396305007 3/30/2016 Co-57 -2.89E-05 1.0lE-04 3.21E-04 u AP ONS-3 396305007 3/30/2016 Co-58 -2.16E-04 2.75E-04 8.09E-04 u AP ONS-3 396305007 3/30/2016 Co-60 1.74E-04 1.27E-04 4.70E-04 u AP ONS-3 396305007 3/30/2016 Cr-51 1.04E-02 6.13E-03 2.lOE-02 u AP ONS-3 396305007 3/30/2016 Cs-134 -3.00E-04 1.51E-04 3.24E-04 u AP ONS-3 396305007 3/30/2016 Cs-137 -l.74E-04 1.48E-04 3.63E-04 u AP ONS-3 396305007 3/30/2016 Fe-59 -9.54E-04 8.95E-04 2.49E-03 u AP ONS-3 396305007 3/30/2016 I-131 -l.OlE-01 1.26E-01 O.OOE+OO u AP ONS-3 396305007 3/30/2016 K-40 -4.45E-04 1.81E-03 5.77E-03 u AP ONS-3 396305007 3/30/2016 La-140 -1.34E-03 1.30E-02 4.28E-02 u AP ONS-3 396305007 3/30/2016 Mn-54 -3.26E-05 l.44E-04 4.73E-04 u D-6 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-3 396305007 3/30/2016 Nb-95 4.32E-04 3.36E-04 l.08E-03 u AP ONS-3 396305007 3/30/2016 Ru-103 -8.62E-04 4.80E-04 l.19E-03 u AP ONS-3 396305007 3/30/2016 Ru-106 -7.86E-04 l.38E-03 4.36E-03 u AP ONS-3 396305007 3/30/2016 Sb-124 2.25E-04 6.08E-04 2.13E-03 u AP ONS-3 396305007 3/30/2016 Sb-125 2.78E-04 3.21E-04 l.09E-03 u AP ONS-3 396305007 3/30/2016 Se-75 -1.21E-04 2.lOE-04 6.53E-04 u AP ONS-3 396305007 3/30/2016 Th-228 -4.llE-04 2.24E-04 6.35E-04 u AP ONS-3 396305007 3/30/2016 Zn-65 -3.50E-04 4.02E-04 l.17E-03 u AP ONS-3 396305007 3/30/2016 Zr-95 l.69E-03 5.48E-04 1.74E-03 u AP ONS-4 396305008 3/30/2016 Ac-228 -6.62E-04 5.91E-04 l.71E-03 u AP ONS-4 396305008 3/30/2016 Ag-108m -5.93E-05 1.04E-04 3.31E-04 u AP ONS-4 396305008 3/30/2016 Ag-llOm -3.23E-04 2.79E-04 6.25E-04 u AP ONS-4 396305008 3/30/2016 Ba-140 -8.79E-03 3.02E-02 9.68E-02 u AP ONS-4 396305008 3/30/2016 Be-7 9.89E-02 9.14E-03 8.67E-03 AP ONS-4 396305008 3/30/2016 Ce-141 -l.22E-03 9.09E-04 2.66E-03 u AP ONS-4 396305008 3/30/2016 Ce-144 -5.25E-04 6.60E-04 2.0lE-03 u AP ONS-4 396305008 3/30/2016 Co-57 7.65E-05 8.90E-05 2.96E-04 u AP ONS-4 396305008 3/30/2016 Co-58 -l.24E-04 2.05E-04 6.20E-04 u AP ONS-4 396305008 3/30/2016 Co-60 -l.93E-04 l.31E-04 3.24E-04 u AP ONS-4 396305008 3/30/2016 Cr-51 -6.69E-03 6.89E-03 2.05E-02 u AP ONS-4 396305008 3/30/2016 Cs-134 -3.50E-04 l.72E-04 3.92E-04 u AP ONS-4 396305008 3/30/2016 Cs-137 7.54E-05 l.19E-04 4.09E-04 u AP ONS-4 396305008 3/30/2016 Fe-59 4.71E-04 9.09E-04 3.IOE-03 u AP ONS-4 396305008 3/30/2016 I-131 3.51E-02 l.32E-Ol O.OOE+OO UI AP ONS-4 396305008 3/30/2016 K-40 -l.15E-03 l.78E-03 5.69E-03 u AP ONS-4 396305008 3/30/2016 La-140 -2.14E-02 1.47E-02 3.67E-02 u AP ONS-4 396305008 3/30/2016 Mn-54 7.46E-05 l.70E-04 4.94E-04 u AP ONS-4 396305008 3/30/2016 Nb-95 -9.74E-05 2.42E-04 7.62E-04 u AP ONS-4 396305008 3/30/2016 Ru-103 6.34E-05 4.49E-04 l.49E-03 u AP ONS-4 396305008 3/30/2016 Ru-106 -9.89E-04 l.36E-03 4.27E-03 u AP ONS-4 396305008 3/30/2016 Sb-124 -8.53E-04 9.27E-04 2.63E-03 u AP ONS-4 396305008 3/30/2016 Sb-125 -l.54E-06 3.08E-04 l.02E-03 u AP ONS-4 396305008 3/30/2016 Se-75 l.89E-04 2.05E-04 6.90E-04 u AP ONS-4 396305008 3/30/2016 Th-228 4.40E-04 3.59E-04 7.37E-04 u AP ONS-4 396305008 3/30/2016 Zn-65 4.16E-05 3.51E-04 1.17E-03 u AP ONS-4 396305008 3/30/2016 Zr-95 7.42E-04 5.51E-04 l.89E-03 u AP ONS-5 396305009 3/30/2016 Ac-228 6.97E-04 6.47E-04 2.41E-03 u AP ONS-5 396305009 3/30/2016 Ag-108m 9.08E-05 l.24E-04 4.20E-04 u AP ONS-5 396305009 3/30/2016 Ag-llOm l.24E-04 2.14E-04 7.53E-04 u AP ONS-5 396305009 3/30/2016 Ba-140 4.26E-03 3.55E-02 1.24E-Ol u AP ONS-5 396305009 3/30/2016 Be-7 1.15E-Ol 1.07E-02 9.66E-03 AP ONS-5 396305009 3/30/2016 Ce-141 5.66E-04 8.33E-04 2.78E-03 u AP ONS-5 396305009 3/30/2016 Ce-144 -8.19E-04 6.97E-04 2.l lE-03 u AP ONS-5 396305009 3/30/2016 Co-57 -l.04E-04 9.81E-05 2.98E-04 u AP ONS-5 396305009 3/30/2016 Co-58 -2.07E-04 2.99E-04 8.89E-04 u AP ONS-5 396305009 3/30/2016 Co-60 -8.05E-05 l.79E-04 5.60E-04 u AP ONS-5 396305009 3/30/2016 Cr-51 -8.70E-04 7.38E-03 2.40E-02 u AP ONS-5 396305009 3/30/2016 Cs-134 7.88E-05 l.69E-04 5.85E-04 u AP ONS-5 396305009 3/30/2016 Cs-137 8.98E-06 l.67E-04 4.89E-04 u AP ONS-5 396305009 3/30/2016 Fe-59 4.97E-04 8.00E-04 2.85E-03 u D-7 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-5 396305009 3/30/2016 I-131 -l.27E-Ol 1.44E-01 O.OOE+OO u AP ONS-5 396305009 3/30/2016 K-40 4.44E-03 2.49E-03 9.65E-03 u AP ONS-5 396305009 3/30/2016 La-140 2.82E-02 l.58E-02 6.22E-02 u AP ONS-5 396305009 3/30/2016 Mn-54 4.45E-06 2.06E-04 5.90E-04 u AP ONS-5. 396305009 3/30/2016 Nb-95 -l.54E-04 2.52E-04 7.50E-04 u AP ONS-5 396305009 3/30/2016 Ru-103 -3.18E-05 5.24E-04 1.67E-03 u AP ONS-5 396305009 3/30/2016 Ru-106 -7.62E-04 1.40E-03 4.25E-03 u AP ONS-5 396305009 3/30/2016 Sb-124 l.86E-05 l.08E-03 3.59E-03 u AP ONS-5 396305009 3/30/2016 Sb-125 -2.43E-05 3.26E-04 1.04E-03 u AP ONS-5 396305009 3/30/2016 Se-75 -2.84E-05 2.16E-04 7.07E-04 u AP ONS-5 396305009 3/30/2016 Th-228 8.56E-05 2.20E-04 7.34E-04 u AP ONS-5 396305009 3/30/2016 Zn-65 l.20E-04 4.47E-04 l.50E-03 u AP ONS-5 396305009 3/30/2016 Zr-95 -2.83E-04 4.16E-04 l.21E-03 u AP ONS-6 396305010 3/30/2016 Ac-228 -1.02E-03 5.69E-04 l.54E-03 u AP ONS-6 396305010 3/30/2016 Ag-108m -9.24E-05 9.62E-05 2.84E-04 u AP ONS-6 396305010 3/30/2016 Ag-llOm -l.59E-04 1.98E-04 5.85E-04 u AP ONS-6 396305010 3/30/2016 Ba-140 3.06E-02 3.66E-02 l.25E-01 u AP ONS-6 396305010 3/30/2016 Be-7 l.06E-01 8.63E-03 7.81E-03 AP ONS-6 396305010 3/30/2016 Ce-141 6.59E-04 7.60E-04 2.53E-03 u AP ONS-6 396305010 3/30/2016 Ce-144 3.83E-04 7.12E-04 2.36E-03 u AP ONS-6 396305010 3/30/2016 Co-57 -9.02E-05 9.22E-05 2.77E-04 u AP ONS-6 396305010 3/30/2016 Co-58 l.66E-04 2.57E-04 9.08E-04 u AP ONS-6 396305010 3/30/2016 Co-60 2.12E-04 2.46E-04 7.97E-04 u AP ONS-6 396305010 3/30/2016 Cr-51 -4.IOE-03 6.93E-03 2.22E-02 u AP ONS-6 396305010 3/30/2016 Cs-134 l.65E-04 l.16E-04 4.33E-04 u AP ONS-6 396305010 3/30/2016 Cs-137 -l.79E-04 l.27E-04 3.15E-04 u AP ONS-6 396305010 3/30/2016 Fe-59 -2.19E-04 7.87E-04 . 2.49E-03 u AP ONS-6 396305010 3/30/2016 I-131 l.43E-01 1.34E-01 O.OOE+OO UI AP ONS-6 396305010 3/30/2016 K-40 l.24E-03 2.41E-03 4.65E-03 u AP ONS-6 396305010 3/30/2016 La-140 -2.35E-02 l.26E-02 l.99E-02 u AP ONS-6 396305010 3/30/2016 Mn-54 -5.29E-05 l.50E-04 4.85E-04 u AP ONS-6 396305010 3/30/2016 Nb-95 l.23E-04 2.94E-04 9.99E-04 u AP ONS-6 396305010 3/30/2016 Ru-103 4.70E-04 4.31E-04 l.50E-03 u AP ONS-6 396305010 3/30/2016 Ru-106 2.67E-04 1.28E-03 4.23E-03 u AP ONS-6 396305010 3/30/2016 Sb-124 8.33E-04 6.34E-04 2.54E-03 u AP ONS-6 396305010 3/30/2016 Sb-125 -5.43E-04 3.46E-04 9.22E-04 u AP ONS-6 396305010 3/30/2016 Se-75 l.91E-04 2.24E-04 7.76E-04 u AP ONS-6 396305010 3/30/2016 Th-228 -2.57E-04 2.39E-04 7.16E-04 u AP ONS-6 396305010 3/30/2016 Zn-65 -5.71E-04 4.llE-04 l.04E-03 u AP ONS-6 396305010 3/30/2016 Zr-95 1.00E-05 4.52E-04 l.53E-03 u AP NBF 392125001 2/24/2016 BETA l.61E-02 1.26E-03 l.15E-03 AP SBN 392125002 2/24/2016 BETA l.55E-02 l.24E-03 l.15E-03 AP DOW 392125003 2/24/2016 BETA l.36E-02 l.16E-03 l.12E-03 AP COL 392125004 2/24/2016 BETA I.84E-02 1.33E-03 l.13E-03 AP ONS-1 392125005 2/24/2016 BETA l.51E-02 l.22E-03 l.13E-03 AP ONS-2 392125006 2/24/2016 BETA l.58E-02 l.25E-03 l.14E-03 AP ONS-3 392125007 2/24/2016 BETA l.49E-02 l.18E-03 l.OSE-03 AP ONS-4 392125008 2/24/2016 BETA l.68E-02 l.29E-03 l.15E-03 AP ONS-5 392125009 2/24/2016 BETA l.SOE-02 1.30E-03 l.IOE-03 AP ONS-6 392125010 2/24/2016 BETA l.50E-02 1.22E-03 l.13E-03 D-8 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP NBF 392609001 3/2/2016 BETA 2.37E-02 1.47E-03 1.17E-03 AP SBN 392609002 3/2/2016 BETA 2.24E-02 1.42E-03 1.17E-03 AP DOW 392609003 3/2/2016 BETA 2.30E-02 l.43E-03 l.16E-03 AP COL 392609004 3/2/2016 BETA 2.36E-02 l .46E-03 l.18E-03 AP ONS-1 392609005 3/2/2016 BETA 2.67E-02 1.55E-03 l.17E-03 AP ONS-2 392609006 3/2/2016 BETA 2.39E-02 l.42E-03 1.09E-03 AP ONS-3 392609007 3/2/2016 BETA 2.64E-02 1.55E-03 1.18E-03 AP ONS-4 392609008 3/2/2016 BETA 2.78E-02 l.57E-03 l.16E-03 AP ONS-5 392609009 3/2/2016 BETA 2.69E-02 l.61E-03 l.26E-03 AP ONS-6 392609010 3/2/2016 BETA 2.31E-02 l.54E-03 1.32E-03 AP NBF 393036001 3/9/2016 BETA 1.82E-02 l.34E-03 1.16E-03 AP SBN 393036002 3/9/2016 BETA 2.llE-02 l.44E-03 1.17E-03 AP DOW 393036003 3/9/2016 BETA l.61E-02 l.28E-03 l.19E-03 AP COL 393036004 3/9/2016 BETA l.87E-02 l.33E-03 1.12E-03 AP ONS-1 393036005 3/9/2016 BETA l.71E-02 l.25E-03 1.07E-03 AP ONS-2 393036006 3/9/2016 BETA 1.69E-02 l.24E-03 l.08E-03 AP ONS-3 393036007 3/9/2016 . BETA 1.71E-02 1.29E-03 l.15E-03 AP ONS-4 393036008 3/9/2016 BETA l.94E-02 l.33E-03 1.08E-03 AP ONS-5 393036009 3/9/2016 BETA 2.05E-02 l.35E-03 1.06E-03 AP ONS-6 393036010 3/9/2016 BETA l.77E-02 l.31E-03 1.15E-03 AP NBF 393504001 3/16/2016 BETA l.66E-02 l.27E-03 1.21E-03 AP SBN 393504002 3/16/2016 BETA l.63E-02 l.26E-03 1.21E-03 AP DOW 393504003 3/16/2016 BETA l.42E-02 l.19E-03 l.22E-03 AP COL 393504004 3/16/2016 BETA 1.88E-02 l.34E-03 l.20E-03 AP ONS-1 393504005 3/16/2016 BETA J.25E-02 l.lOE-03 1.18E-03 AP ONS-2 393504006 3/16/2016 BETA 1.92E-02 l.33E-03 l.17E-03 AP ONS-3 393504007 3/16/2016 BETA 1.81E-02 1.29E-03 1.17E-03 AP ONS-4 393504008 3/16/2016 BETA 1.59E-02 l.21E-03 1.15E-03 AP ONS-5 393504009 3/16/2016 BETA 1.21E-02 1.07E-03 l.16E-03 AP ONS-6 393504010 3/16/2016 BETA l.62E-02 1.27E-03 l.23E-03 AP NBF 393880001 3/23/2016 BETA l.61E-02 1.22E-03 l.13E-03 AP SBN 393880002 3/23/2016 BETA l.40E-02 1.13E-03 1.1 lE-03 AP DOW 393880003 3/23/2016 BETA 1.64E-02 l.20E-03 l.09E-03 AP COL 393880004 3/23/2016 BETA l.51E-02 l.15E-03 l.08E-03 AP ONS-1 393880005 3/23/2016 BETA l.49E-02 l.16E-03 l. llE-03 AP ONS-2 393880006 3/23/2016 BETA l.47E-02 l.36E-03 l.50E-03 AP ONS-3 393880007 3/23/2016 BETA l.69E-02 l.27E-03 l.17E-03 AP ONS-4 393880008 3123/2016 BETA l.42E-02 l.14E-03 l.12E-03 AP ONS-5 393880009 3/23/2016 BETA l.87E-02 l.3 lE-03 1.14E-03 AP ONS-6 393880010 3123/2016 BETA l.53E-02 l.19E-03 l.13E-03 AP NBF 394190001 3/30/2016 BETA 2.37E-02 l.48E-03 l.24E-03 AP SBN 394190002 3/30/2016 BETA 1.75E-02 1.27E-03 l.24E-03 AP DOW 394190003 3/30/2016 BETA l.72E-02 l.25E-03 l.21E-03 AP COL 394190004 3/30/2016 BETA l.85E-02 l.28E-03 l.19E-03 AP ONS-1 394190005 3/30/2016 BETA 2.08E-02 l.38E-03 l.23E-03 AP ONS-2 394190006 3/30/2016 BETA l.62E-02 l.24E-03 l.25E-03 AP ONS-3 394190007 3/30/2016 BETA 1.84E-02 l.32E-03 l.26E-03 AP ONS-4 394190008 3/30/2016 BETA l.86E-02 J.28E-03 l.17E-03 AP ONS-5 394190009 3/30/2016 BETA 2.00E-02 l.35E-03 l.22E-03 AP ONS-6 394190010 3/30/2016 BETA l.79E-02 1.28E-03 l.22E-03 D-9 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP NBF 394892001 4/6/2016 BETA 2.35E-02 l.45E-03 l.llE-03 AP SBN 394892002 4/6/2016 BETA 2.43E-02 l.48E-03 l.1 IE-03 AP DOW 394892003 4/6/2016 BETA 2.16E-02 l.40E-03 l.12E-03 AP COL 394892004 4/6/2016 BETA 2.15E-02 1.38E-03 1.09E-03 AP ONS-1 394892005 4/6/2016 BETA 2.llE-02 1.38E-03 1.l IE-03 AP ONS-2 394892006 4/6/2016 BETA 1.97E-02 l.35E-03 l.14E-03 AP ONS-3 394892007 4/6/2016 BETA 2.03E-02 l.37E-03 l.14E-03 AP ONS-4 394892008 4/6/2016 BETA 2.08E-02 1.36E-03 1.lOE-03 AP ONS-5 394892009 4/6/2016 BETA 2.28E-02 l.44E-03 l.12E-03 AP ONS-6 394892010 4/6/2016 BETA l.87E-02 l.31E-03 l.12E-03 AP NBF 395460001 4/13/2016 BETA l.82E-02 l.29E-03 1.12E-03 AP SBN 395460002 4/13/2016 BETA l.65E-02 l.23E-03 l.12E-03 AP DOW 395460003 4/13/2016 BETA l.46E-02 l.16E-03 l.12E-03 AP COL 395460004 4/13/2016 BETA l.27E-02 1.09E-03 l.13E-03 AP ONS-1 395460005 4/13/2016 BETA l.64E-02 l.23E-03 l.13E-03 AP ONS-2 395460006 4/13/2016 BETA 1.54E-02 l.20E-03 l.13E-03 AP ONS-3 395460007 4/13/2016 BETA l.53E-02 1.19E-03 1.12E-03 AP ONS-4 395460008 4/13/2016 BETA l.63E-02 1.21E-03 l.lOE-03 AP ONS-5 395460009 4/13/2016 BETA l.60E-02 l.21E-03 l.12E-03 AP ONS-6 395460010 4/13/2016 BETA l.65E-02 l.22E-03 1.llE-03 AP NBF 395901001 4/20/2016 BETA 2.18E-02 l.45E-03 l.23E-03 AP SBN 395901002 4/20/2016 BETA 2.58E-02 1.56E-03 l.21E-03 AP DOW 395901003 4/20/2016 BETA 2.18E-02 1.43E-03 l.20E-03 AP COL 395901004 4/20/2016 BETA 2.60E-02 l.57E-03 1.23E-03 AP ONS-1 395901005 4/20/2016 BETA 2.57E-02 l.54E-03 l.19E-03 AP ONS-2 395901006 4/20/2016 BETA 2.73E-02 l.60E-03 l.21E-03 AP ONS-3 395901007 4/20/2016 BETA 2.56E-02 l.56E-03 l.22E-03 AP ONS-4 395901008 4/20/2016 BETA 2.36E-02 1.49E-03 l.20E-03 AP ONS-5 395901009 4/20/2016 BETA 2.86E-02 l.63E-03 l.20E-03 AP ONS-6 395901010 4/20/2016 BETA 2.76E-02 l.58E-03 1.17E-03 AP NBF 396336001 4/27/2016 BETA 2.35E-02 1.51E-03 l.22E-03 AP SBN 396336002 4127/2016 BETA 2.03E-02 l.39E-03 1.19E-03 AP DOW 396336003 4/27/2016 BETA l.88E-02 l.33E-03 l.17E-03 AP COL 396336004 4/27/2016 BETA 2.20E-02 1.44E-03 1.19E-03 AP ONS-1 396336005 4/27/2016 BETA 2.20E-02 l.43E-03 1. l 7E-03 AP ONS-2 396336006 4/27/2016 BETA 2.38E-02 l.50E-03 1.18E-03 AP ONS-3 396336007 4/27/2016 BETA 2.00E-02 l.38E-03 1.18E-03 AP ONS-4 396336008 4/27/2016 BETA 2.llE-02 I.40E-03 1.16E-03 AP ONS-5 396336009 4/27/2016 BETA l.93E-02 1.34E-03 1.16E-03 AP ONS-6 396336010 4/27/2016 BETA l.77E-02 l.28E-03 1.15E-03 AP NBF 396892001 5/4/2016 BETA 1.58E-02 l.22E-03 l.20E-03 AP SBN 396892002 5/4/2016 BETA l.32E-02 l.BE-03 l.21E-03 AP DOW 396892003 5/4/2016 BETA l.67E-02 l.25E-03 l.19E-03 AP COL 396892004 5/4/2016 BETA l.60E-02 l.23E-03 l.19E-03 AP ONS-1 396892005 5/4/2016 BETA l.61E-02 l.22E-03 1.17E-03 AP ONS-2 396892006 5/4/2016 BETA l.55E-02 1.19E-03 1.15E-03 AP ONS-3 396892007 5/4/2016 BETA 1.58E-02 1.19E-03 1.14E-03 AP ONS-4 396892008 5/4/2016 BETA l.49E-02 l.19E-03 1.19E-03 AP ONS-5 396892009 5/4/2016 BETA l.71E-02 1.26E-03 l.18E-03 AP ONS-6 396892010 5/4/2016 BETA l.39E-02 1.16E-03 l.20E-03 D-10 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP NBF 397370001 5/11/2016 BETA l.21E-02 l.09E-03 1.14E-03 AP SBN 397370002 5/11/2016 BETA l.95E-02 1.37E-03 l.16E-03 AP DOW 397370003 5/11/2016 BETA l.16E-02 1.09E-03 l.20E-03 AP COL 397370004 5/11/2016 BETA 1.52E-02 l.21E-03 l.14E-03 AP ONS-1 397370005 5/11/2016 BETA l.56E-02 1.25E-03 l.19E-03 AP ONS-2 397370006 5/11/2016 BETA l.62E-02 l.22E-03 1.lOE-03 AP ONS-3 397370007 5/11/2016 BETA l.58E-02 l.25E-03 1.18E-03 AP ONS-4 397370008 5/11/2016 BETA l.51E-02 l.18E-03 l.lOE-03 AP ONS-5 397370009 5/11/2016 BETA l.73E-02 l.29E-03 l.14E-03 AP ONS-6 397370010 5/11/2016 BETA l.26E-02 l. lOE-03 l.12E-03 AP NBF 397851001 5/18/2016 BETA 1.54E-02 l.19E-03 l.lOE-03 AP SBN 397851002 5/18/2016 BETA 1.53E-02 l.21E-03 l.14E-03 AP DOW 397851003 5/18/2016 BETA l.35E-02 1.llE-03 1.08E-03 AP COL 397851004 5/18/2016 BETA l.53E-02 l.17E-03 l.07E-03 AP ONS-1 397851005 5/18/2016 BETA l.54E-02 l.18E-03 l.08E-03 AP ONS-2 397851006 5/18/2016 BETA l.3 lE-02 LllE-03 1.l lE-03 AP ONS-3 397851007 5/18/2016 BETA 1.54E-02 1.15E-03 l.02E-03 AP ONS-4 397851008 5/18/2016 BETA l.48E-02 l.17E-03 l.09E-03 AP ONS-5 397851009 5/1812016 BETA l.67E-02 1.18E-03 9.98E-04 AP ONS-6 397851010 5/18/2016 BETA l.36E-02 1.12E-03 1.09E-03 AP NBF 402840001 6/29/2016 Ac-228 -2.04E-04 5.13E-04 l.77E-03 u AP NBF 402840001 6/29/2016 Ag-108m l.17E-04 1.07E-04 3.70E-04 u AP NBF 402840001 6/29/2016 Ag-llOm -l.77E-04 2.36E-04 6.87E-04 u AP NBF 402840001 6/29/2016 Ba-140 -2.55E-02 5.95E-02 l.90E-Ol u AP NBF 402840001 6/29/2016 Be-7 l.63E-01 l.33E-02 l.22E-02 AP NBF 402840001 6/29/2016 Ce-141 l.97E-05 1.08E-03 3.60E-03 u AP NBF 402840001 6/29/2016 Ce-144 -3.80E-05 6.76E-04 2.25E-03 u AP NBF 402840001 6/29/2016 Co-57 4.51E-05 1.02E-04 3.48E-04 u AP NBF 402840001 6/29/2016 Co-58 -5.40E-04 3.03E-04 6.20E-04 u AP NBF 402840001 6/29/2016 Co-60 8.94E-05 1.50E-04 5.30E-04 u AP NBF 402840001 6/29/2016 Cr-51 l.82E-04 1.0lE-02 3.30E-02 u AP NBF 402840001 6/29/2016 Cs-134 l.78E-04 1.62E-04 5.87E-04 u AP NBF 402840001 6/29/2016 Cs-137 -6.66E-05 1.31E-04 4.08E-04 u AP NBF 402840001 6/29/2016 Fe-59 1.24E-03 8.24E-04 3.26E-03 u AP NBF 402840001 6/29/2016 I-131 3.04E-01 3.58E-01 O.OOE+OO Ul AP NBF 402840001 6/29/2016 K-40 2.96E-03 l.69E-03 2.25E-03 Ul AP NBF 402840001 6/29/2016 La-140 6.37E-03 3.13E-02 l.08E-01 u AP NBF 402840001 6/29/2016 Mn-54 2.46E-04 l.76E-04 6.40E-04 u AP NBF 402840001 6/29/2016 Nb-95 1.83E-04 3.62E-04 l.26E-03 u AP NBF 402840001 6/29/2016 Ru-103 5.41E-04 5.69E-04 l.96E-03 u AP NBF 402840001 6/29/2016 Ru-106 3.13E-03 l.49E-03 5.35E-03 u AP NBF 402840001 6/29/2016 Sb-124 -8.18E-05 1.04E-03 3.41E-03 u AP NBF 402840001 6/29/2016 Sb-125 -7.05E-05 3.66E-04 l.16E-03 u AP NBF 402840001 6/29/2016 Se-75 -3.79E-05 2.48E-04 8.02E-04 u AP NBF 402840001 6/29/2016 Th-228 4.44E-05 2.17E-04 7.43E-04 u AP NBF 402840001 6/29/2016 Zn-65 7.39E-04 4.27E-04 l.58E-03 u AP NBF 402840001 6/29/2016 Zr-95 8.40E-04 6.74E-04 2.44E-03 u AP SBN 402840002 6/29/2016 Ac-228 -3.51E-04 5.78E-04 1.93E-03 u -AP SBN 402840002 6/29/2016 Ag-108m -4.87E-05 1.llE-04 3.51E-04 u AP SBN 402840002 6/29/2016 Ag-llOm -l.69E-05 2.16E-04 7.19E-04 u D-11

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP SBN 402840002 6/29/2016 Ba-140 -l.23E-01 7.41E-02 l.78E-Ol u AP SBN 402840002 6/29/2016 Be-7 l.81E-01 l.51E-02 l.28E-02 AP SBN 402840002*

6/29/2016 Ce-141 2.71E-03 2.12E-03 3.llE-03 u AP SBN 402840002 6/29/2016 Ce-144 5.02E-04 8.39E-04 2.76E-03 u AP SBN 402840002 6/29/2016 Co-57 -8.66E-09 9.77E-05 3.15E-04 u AP SBN 402840002 6/29/2016 Co-58 -l.93E-04 2.54E-04 6.97E-04 u AP SBN 402840002 6/29/2016 Co-60 -5.00E-05 1.33E-04 4.03E-04 u AP SBN 402840002 6/29/2016 Cr-51 -5.25E-03 9.89E-03 3.15E-02 u AP SBN 402840002 6/29/2016 Cs-134 2.34E-04 l.66E-04 5.95E-04 u AP SBN 402840002 6/29/2016 Cs-137 -4.53E-05 l.61E-04 5.09E-04 u AP SBN 402840002 6/29/2016 Fe-59 -9.23E-04 l.09E-03 3.09E-03 u AP SBN 402840002 6/29/2016 I-131 l.56E+OO 5.86E-Ol O.OOE+OO UI AP SBN 402840002 6/29/2016 K-40 -2.49E-03 l.79E-03 4.59E-03 u AP SBN 402840002 6/29/2016 La-140 -l.07E-02 2.22E-02 6.35E-02 u AP SBN 402840002 6/29/2016 Mn-54 6.56E-05 l.59E-04 5.56E-04 u AP SBN 402840002 6/29/2016 Nb-95 -4.02E-04 4.43E-04 l.26E-03 u AP SBN 402840002 6/29/2016 Ru-103 7.69E-05 5.99E-04 l.99E-03 u AP SBN 402840002 6/29/2016 Ru-106 l.67E-03 l.61E-03 5.55E-03 u AP SBN 402840002 6/29/2016 Sb-124 -3.31E-04 l.27E-03 3.96E-03 u AP SBN 402840002 6/29/2016 Sb-125 5.47E-04 4.08E-04 l.29E-03 u AP SBN**"

402840002 6/29/2016 Se-75 3.63E-04 2.45E-04 8.44E-04 u AP SBN 402840002 6/29/2016 Th-228 9.97E-05 2.12E-04 7.26E-04 u AP SBN 402840002 6/29/2016 Zn-65 2.lOE-05 3.58E-04 l.20E-03 u AP SBN 402840002 6/29/2016 Zr-95 -5.17E-04 8.12E-04 2.43E-03 u AP DOW 402840003 6/29/2016 Ac-228 -4.95E-04 4.98E-04 l.50E-03 u AP DOW 402840003 6/29/2016 Ag-108m 3.50E-05 6.93E-05 2.36E-04 u AP DOW 402840003 6/29/2016 Ag-llOm -2.71E-06 l.83E-04 5.97E-04 u AP DOW 402840003 6/29/2016 Ba-140 -5.49E-03 5.71E-02 l.63E-01 u AP DOW 402840003 6/29/2016 Be-7 l.77E-01 l.24E-02 6.45E-03 AP DOW 402840003 6/29/2016 Ce-141 7.89E-04 2.52E-03 u AP DOW 402840003 6/29/2016 Ce-144 -4.83E-05 5.77E-04 l.81E-03 u AP DOW 402840003 6/29/2016 Co-57 l.04E-04 6.37E-05 2.28E-04 u AP DOW 402840003 6/29/2016 Co-58 -6.29E-05 2.54E-04 8.llE-04 u AP DOW 402840003 6/29/2016 Co-60 -l.72E-04 1.37E-04 3.3 lE-04 u AP DOW 402840003 6/29/2016 Cr-51 -2.36E-06 6.69E-03 2.22E-02 u AP DOW 402840003 6/29/2016 Cs-134 2.61E-05 1.33E-04 4.47E-04 u AP DOW 402840003 6/29/2016 Cs-137 -3.31E-05 9.87E-05 2.83E-04 u AP DOW 402840003 6/29/2016 Fe-59 -l.15E-03 7.36E-04 l.21E-03 u AP DOW 402840003 6/29/2016 I-131 1.38E-Ol 2.80E-Ol O.OOE+OO UI AP DOW 402840003 6/29/2016 K-40 -3.38E-04 l.45E-03 5.20E-03 u AP DOW 402840003 6/29/2016 La-140 -l.90E-02 2.90E-02 8.44E-02 u AP DOW 402840003 6/29/2016 Mn-54 -5.lOE-06 l.40E-04 4.57E-04 u AP DOW 402840003 6/29/2016 Nb-95 -2.53E-04 2.73E-04 7.77E-04 u AP DOW 402840003 6/29/2016 Ru-103 3.59E-04 4.57E-04 l.56E-03 u AP DOW 402840003 6/29/2016 Ru-106 l.61E-03 9.04E-04 3.33E-03 u AP DOW 402840003 6/29/2016 Sb-124 6.07E-04 6.44E-04 2.51E-03 u AP DOW 402840003 6/29/2016 Sb-125 -3.54E-05 2.26E-04 7.21E-04 u AP DOW 402840003 6/29/2016 Se-75 3.81E-04 2.07E-04 7.0IE-04 u AP DOW 402840003 6/29/2016 Th-228 -7.75E-05 l.74E-04 5.80E-04 u AP DOW 402840003 6/29/2016 Zn-65 2.76E-05 3.06E-04 9.99E-04 u D-12 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP DOW 402840003 6/29/2016 Zr-95 -5.55E-04 4.31E-04 l.08E-03 u AP COL 402840004 6/29/2016 Ac-228 -2.13E-04 5.14E-04 l.66E-03 u AP COL 402840004 6/29/2016 Ag-108111

-2.19E-04 l.35E-04 2.69E-04 u AP COL 402840004 6/29/2016 Ag-llOm -2.68E-04 l.86E-04 4.15E-04 u AP COL 402840004 6/29/2016 Ba-140 3.57E-02 5.59E-02 1.97E-01 u AP COL 402840004 6/29/2016 Be-7 1.78E-Ol 1.29E-02 7.49E-03 AP COL 402840004 6/29/2016 Ce-141 -8.58E-04 9.89E-04 3.lOE-03 u AP COL 402840004 6/29/2016 Ce-144 8.65E-04 7.37E-04 2.52E-03 u AP COL 402840004 6/29/2016 Co-57 3.78E-05 8.55E-05 2.93E-04 u AP COL 402840004 6/29/2016 Co-58 -2.61E-04 2.74E-04 7.59E-04 u AP COL 402840004 6/29/2016 Co-60 4.81E-06 1.09E-04 3.66E-04 u AP COL 402840004 6/29/2016 Cr-51 2.62E-03 8.53E-03 2.83E-02 u AP COL 402840004 6/29/2016 Cs-134 1.65E-04 l.76E-04 5.58E-04 u AP COL 402840004 6/29/2016 Cs-137 l.21E-05 1.17E-04 3.90E-04 u AP COL 402840004.

6/29/2016 Fe-59 l.57E-04 9.83E-04 3.37E-03 u AP COL 402840004 6/29/2016 I-131 -5.63E-01 3.40E-01 O.OOE+OO u AP COL 402840004 6/29/2016 K-40 -l.63E-03 l.74E-03 5.51E-03 u AP COL 402840004 612912016 La-140 -3.54E-02 2.61E-02 5.72E-02 u AP COL 402840004 6/29/2016 Mn-54 3.90E-05 l.02E-04 3.54E-04 u AP COL 402840004 6/29/2016 Nb-95 4.04E-04 3.84E-04 l.34E-03 u AP COL 402840004 6/29/2016 Ru-103 -5.95E-04 5.19E-04 1.50E-03 u AP COL 402840004 6/29/2016 Ru-106 2.39E-04 l.16E-03 3.94E-03 u AP COL 402840004 6/29/2016 Sb-124 6.46E-04 6.78E-04 2.65E-03 u AP COL 402840004 6/29/2016 Sb-125 2.40E-04 3.55E-04 1.18E-03 u AP COL 402840004 6/29/2016 Se-75 -3.17E-04 2.83E-04 8.39E-04 u AP COL 402840004 612912016 Th-228 2.23E-04 2.13E-04 7.15E-04 u AP COL 402840004 6/29/2016 Zn-65 5.92E-05 3.63E-04 l.24E-03 u AP COL 402840004 6/29/2016 Zr-95 -2.75E-04 5.71E-04 1.80E-03 u AP ONS-1 402840005 6/29/2016 Ac-228 -1.SOE-04 5.42E-04 1.82E-03 u AP ONS-1 402840005 6/29/2016 Ag-108m 4.95E-05 l.OlE-04 3.45E-04 u AP ONS-1 402840005 6/29/2016 Ag-llOm -l.18E-04 l.76E-04 4.94E-04 u AP ONS-1 402840005 6/29/2016 Ba-140 -2.23E-02 6.27E-02 1.94E-Ol u AP ONS-1 402840005 6/29/2016 Be-7 l.60E-01 1.42E-02 1.16E-02 AP ONS-1 402840005 6/29/2016 Ce-141 4.74E-04 9.63E-04 3.28E-03 u AP ONS-1 402840005 6/29/2016 Ce-144 9.71E-04 9.26E-04 2.14E-03 u AP ONS-1 402840005 6/29/2016 Co-57 -l.03E-05 8.50E-05 2.84E-04 u AP ONS-1 402840005 6/29/2016 Co-58 -4.70E-04 3.41E-04 8.59E-04 u AP ONS-1 402840005 6/29/2016 Co-60 4.04E-05 1.79E-04 6.05E-04 u AP ONS-1 402840005 6/29/2016 Cr-51 -6.51E-04 8.54E-03 2.85E-02 u AP ONS-1 402840005 6/29/2016 Cs-134 -UOE-05 I.84E-04 6.02E-04 u AP ONS-1 402840005 6/29/2016 Cs-137 1.72E-04 1.43E-04 5.12E-04 u AP ONS-1 402840005 6/29/2016 Fe-59 9.42E-05 1.09E-03 3.68E-03 u AP ONS-1 402840005 6/29/2016 I-131 -l.46E-01 3.95E-01 O.OOE+OO u AP ONS-1 402840005 6/29/2016 K-40 1.02E-03 l.82E-03 6.99E-03 u AP ONS-1 402840005 6/29/2016 La-140 3.91E-02 2.61E-02 1.05E-01 u AP ONS-1 402840005 6/29/2016 Mn-54 9.08E-05 l.38E-04 4.89E-04 u AP ONS-1 402840005 6/29/2016 Nb-95 -5.15E-04 3.66E-04 9.68E-04 u AP ONS-1 402840005 6/29/2016 Ru-103 1.48E-04 4.81E-04 I.62E-03 u AP ONS-1 402840005 6/29/2016 Ru-106 -l.06E-03 1.29E-03 3.88E-03 u AP ONS-1 402840005 6/29/2016 Sb-124 -1.13E-03 7.06E-04 O.OOE+OO u D-13 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-1 402840005 6/29/2016 Sb-125 -8.88E-05 2.86E-04 9.1 lE-04 u AP ONS*-1 402840005 6/29/2016 Se-75 -3.20E-05 2.58E-04 8.24E-04 u AP ONS-1 402840005 6/29/2016 Th-228 l.llE-04 2.32E-04 7.20E-04 u AP ONS-1 402840005 6/29/2016 Zn-65 -l.06E-03 4.94E-04 8.83E-04 u AP ONS-1 402840005 6/29/2016 Zr-95 4.09E-04 4.31E-04 l.60E-03 u AP ONS-2 402840006 6129/2016 Ac-228 -2.14E-04 4.64E-04 l.45E-03 u AP ONS-2 402840006 6129/2016 Ag-108m 2.90E-04 l.46E-04 3.75E-04 u AP, .. ONS-2 402840006 6/29/2016 Ag-110m -3.49E-04 2.47E-04 5.93E-04 u AP ONS-2 402840006 6/29/2016 Ba-140 2.24E-02 5.21E-02 l.82E-01 u AP ONS-2 402840006 6/29/2016 Be-7 l.69E-Ol 1.39E-02 8.82E-03 AP ONS-2 402840006 6/29/2016 Ce-141 3.95£-04 1.14E-03 3.70E-03 u AP ONS-2 402840006 6/29/2016 Ce-144 l.21E-04 7.25E-04 2.35E-03 u AP ONS-2 402840006 6/29/2016 Co-57 2.86E-05 9.92E-05 3.25E-04 u AP ONS-2 402840006 6/29/2016 Co-58 9.38E-05 2.84E-04 9.62E-04 u AP ONS-2 402840006 6/29/2016 Co-60 -l.52E-04 l.53E-04 3.95E-04 u AP ONS-2 402840006 6/29/2016 Cr-51 -3.55E-03 8.89E-03 2.83E-02 u AP ONS-2 402840006 6/29/2016 Cs-134 5.65E-05 l.67E-04 5.64E-04 u AP ONS-2 402840006 6/29/2016 Cs-137 5.96E-05 l.26E-04 4.34E-04 u AP ONS-2 402840006 6/29/2016 Fe-59 l.07E-03 l.02E-03 3.76E-03 u AP ONS-2 402840006 6/29/2016 1-131 7.12E-02 3.28E-01 O.OOE+OO UI AP ONS-2 402840006 6/29/2016 K-40 6.66E-03 2.66E-03 9.41E-03 u AP ONS-2 402840006 6/29/2016 La-140 l.96E-03 l.47E-02 4.96E-02 u AP ONS-2 402840006 6/29/2016 Mn-54 -2.69E-04 l.65E-04 3.72E-04 u AP ONS-2 402840006 6/29/2016 Nb-95 9.14E-05 3.27E-04 l.08E-03 u AP ONS-2 402840006 6/29/2016 Ru-103 l.97E-05 4.52E-04 l.53E-03 u AP ONS-2 402840006 6/29/2016 Ru-106 2.44E-03 l.40E-03 4.96E-03 u AP ONS-2 402840006 6/29/2016 Sb-124 -3.18E-04 5.98E-04 l.66E-03 u AP ONS-2 402840006 6/29/2016 Sb-125 2.04E-04 3.llE-04 9.49E-04 u AP ONS-2 402840006 6/29/2016 Se-75 l.65E-04 2.44E-04 8.12E-04 u AP ONS-2 402840006 6/29/2016 Th-228 3.16E-04 2.13E-04 6.39E-04 u AP ONS-2 402840006 6/29/2016 Zn-65 4.15E-04 3.0lE-04 l.16E-03 u AP ONS-2 402840006 6/29/2016 Zr-95 -7.86E-04 5.03E-04 l.lOE-03 u AP ONS-3 402840007 6/29/2016 Ac-228 -3.98E-06 4.15E-04 l.49E-03 u AP ONS-3 402840007 6/29/2016 Ag-108m 5.46E-05 8.94E-05 3.03E-04 u AP ONS-3 402840007 6/29/2016 Ag-llOm 6.llE-04 2.45E-04 8.55E-04 u AP ONS-3 402840007 6/29/2016 Ba-140 5.18E-02 5.59E-02 l.92E-Ol u AP ONS-3 402840007 6/29/2016 Be-7 l.76E-Ol l.37E-02 8.19E-03 AP ONS-3 402840007 6/29/2016 Ce-141 -7.0lE-04 9.73E-04 2.68E-03 u AP ONS-3 402840007 612912016 Ce-144 -6.18E-04 5.75E-04 l.68E-03 u AP ONS-3 402840007 6/29/2016 Co-57 3.95E-05 8.50E-05 2.83E-04 u AP ONS-3 402840007 6/29/2016 Co-58 -3.76E-04 2.47E-04 5.67E-04 u AP ONS-3 402840007 6/29/2016 Co-60 8.36E-05 1.20E-04 4.37E-04 u AP ONS-3 402840007 6/29/2016 Cr-51 5.00E-03 7.13E-03 2.45E-02 u AP ONS-3 402840007 6/29/2016 Cs-134 l.12E-04 1.31E-04 4.64E-04 u . AP ONS-3 402840007 6/29/2016 Cs-137 3.05E-05 l.18E-04 4.02E-04 u AP ONS-3 402840007 6/29/2016 Fe-59 l.37E-03 8.28E-04 3.19E-03 u AP ONS-3 402840007 6/29/2016 I-131 5.04E-02 3.02E-01 O.OOE+OO UI AP ONS-3 402840007 6/29/2016 K-40 2.70E-03 2.0lE-03 7.61E-03 u AP ONS-3 402840007 6/29/2016 La-140 -3.82E-02 2.48E-02 4.68E-02 u AP ONS-3 402840007 6/29/2016 Mn-54 2.68E-06 1.26E-04 4.21E-04 u D-14 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-3 402840007 6/29/2016 Nb-95 -8.29E-05 2.85E-04 9.02E-04 u AP ONS-3 402840007 6/29/2016 Ru-103 -l.38E-04 3.77E-04 1.ISE-03 u AP ONS-3 402840007 6/29/2016 Ru-106 -l.70E-03 1.25E-03 2.63E-03 u AP ONS-3 402840007 6/29/2016 Sb-124 l.77E-05 8.16E-04 2.74E-03 u AP ONS-3 402840007 6/29/2016 Sb-125 2.70E-04 2.34E-04 8.23E-04 u AP ONS-3 402840007 6/29/2016 Se-75 3.07E-04 2.34E-04 7.59E-04 u AP ONS-3 402840007 6/29/2016 Th-228 l.34E-04 1.78E-04 6.26E-04 u AP ONS-3 402840007 6/29/2016 Zn-65 -3.92E-04 3.17E-04 8.ISE-04 u AP ONS-3 402840007 6/29/2016 Zr-95 7.66E-04 5.25E-04 1.90E-03 u AP ONS-4 402840008 6/29/2016 Ac-228 -4.04E-04 4.47E-04 1.35E-03 u AP ONS-4 402840008 6/29/2016 Ag-108m -4.73E-05 8.SOE-05 2.54E-04 u AP ONS-4 402840008 6/29/2016 Ag-llOm -l.93E-04 l.90E-04 5.08E-04 u AP ONS-4 402840008 6/29/2016 Ba-140 -5.12E-02 4.5IE-02 l.26E-01 u AP ONS-4 402840008 6/29/2016 Be-7 1.70E-01 1.21E-02 6.84E-03 AP ONS-4 402840008 6/29/2016 Ce-141 -1.27E-04 9.29E-04 2.93E-03 u AP ONS-4 402840008 6/29/2016 Ce-144 -1.0IE-03 6.37E-04 1.69E-03 u AP ONS-4 402840008 6/29/2016 Co-57 1.33E-05 7.58E-05 2.45E-04 u AP ONS-4 402840008 6/29/2016 Co-58 -3.36E-04 3.04E-04 6.47E-04 u AP ONS-4 402840008 6/29/2016 Co-60 -2.39E-04 l.66E-04 4.00E-04 u AP ONS-4 402840008 6/29/2016 Cr-51 -l.06E-02 8.33E-03 2.37E-02 u AP ONS-4 402840008 6/29/2016 Cs-134 -8.87E-05 l.39E-04 4.16E-04 u AP ONS-4 402840008 6/29/2016 Cs-137 -1.61E-04 1.15E-04 3.02E-04 u AP ONS-4 402840008 6/29/2016 Fe-59 2.13E-05 l. llE-03 3.69E-03 u AP ONS-4 402840008 6/29/2016 I-131 -1.75E-01 2.88E-01 O.OOE+OO u AP ONS-4 402840008 6/29/2016 K-40 6.75E-03 1.62E-03 3.60E-03 UI AP ONS-4 402840008 6/29/2016 La-140 3. lOE-03 2.22E-02 7.59E-02 u AP ONS-4 402840008 6/29/2016 Mn-54 1.22E-04 1.47E-04 5.07E-04 u AP ONS-4 402840008 6/29/2016 Nb-95 3.45E-04 3.68E-04 1.14E-03 u AP ONS-4 402840008 6/29/2016 Ru-103 1.83E-04 5.24E-04 1.80E-03 u AP ONS-4 402840008 6/29/2016 Ru-106 -2.34E-04 l.07E-03 3.46E-03 u AP ONS-4 402840008 6/29/2016 Sb-124 -4.73E-04 8.48E-04 2.55E-03 u AP ONS-4 402840008 6/29/2016 Sb-125 9.91E-05 2.18E-04 7.31E-04 u AP ONS-4 402840008 6/29/2016 Se-75 -3.57E-04 2.21E-04 6.04E-04 u AP ONS-4 402840008 6/29/2016 Th-228 7.41E-05 1.82E-04 6.37E-04 u AP ONS-4 402840008 6/29/2016 Zn-65 5.41E-04 3.96E-04 l.42E-03 u AP ONS-4 402840008 6/29/2016 Zr-95 6.56E-04 5.02E-04 1.78E-03 u AP ONS-5 402840009 6/29/2016 Ac-228 3.22E-04 5.0lE-04 1.92E-03 u AP ONS-5 402840009 6/29/2016 Ag-108m -l.57E-04 1.16E-04 3.06E-04 u AP ONS-5 402840009 6/29/2016 Ag-llOm -l.23E-05 2.45E-04 8.04E-04 u AP ONS-5 402840009 6/29/2016 Ba-140 2.16E-02 7.20E-02 2.49E-01 u AP ONS-5 402840009 6/29/2016 Be-7 l.59E-01 1.IIE-02 9.31E-03 AP ONS-5 402840009 6/29/2016 Ce-141 -4.50E-04 l.04E-03 3.35E-03 u AP ONS-5 402840009 6/29/2016 Ce-144 -l.62E-03 7.46E-04 1.83E-03 u AP ONS-5 402840009 6/29/2016 Co-57 1.81E-04 l.OOE-04 3.34E-04 u AP ONS-5 402840009 6/29/2016 Co-58 4.ISE-04 3.28E-04 1.19E-03 u AP ONS-5 402840009 6/29/2016 Co-60 l.32E-04 l.36E-04 5.06E-04 u AP ONS-5 402840009 6/29/2016 Cr-51 1.ISE-02 9.76E-03 3.32E-02 u AP ONS-5 402840009 6/29/2016 Cs-134 2.33E-04 1.SIE-04 5.60E-04 u AP ONS-5 402840009 6/29/2016 Cs-137 -1.0lE-04 1.42E-04 4.33E-04 u AP ONS-5 402840009 6/29/2016 Fe-59 1.12E-03 9.95E-04 3.68E-03 u D-15 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-5 402840009 6/29/2016 I-131 -8.65E-01 4.20E-01 O.OOE+OO u AP ONS-5 402840009 6/29/2016 K-40 l.40E-03 l.40E-03 4.38E-03 u AP ONS-5 402840009 6/29/2016 La-140 2.30E-02 2.05E-02 8.19E-02 u AP ONS-5 402840009 6/29/2016 Mn-54 2.46E-05 l.45E-04 4.89E-04 u AP ONS-5 402840009 6/29/2016 Nb-95 5.76E-04 3.67E-04 l.33E-03 u AP ONS-5 402840009 6129/2016 Ru-103 -l.64E-03 7.llE-04 8.88E-04 u AP ONS-5 402840009 6/29/2016 Ru-106 -l.24E-03 l.38E-03 4.llE-03 u AP ONS-5 402840009 6/29/2016 Sb-124 -6.73E-04 8.99E-04 2.46E-03 u AP ONS-5 402840009 6/29/2016 Sb-125 2.82E-04 3.56E-04 l.21E-03 u AP ONS-5 402840009 6/29/2016 Se-75 -3.30E-05 2.28E-04 7.39E-04 u AP ONS-5 402840009 6/29/2016 Th-228 l.21E-04 2.26E-04 7.16E-04 u AP ONS-5 402840009 6/29/2016 Zn-65 4.89E-04 3.65E-04 l.36E-03 u AP ONS-5 402840009 6/29/2016 Zr-95 -3.37E-04 4.82E-04 l.41E-03 u AP ONS-6 402840010 6/29/2016 Ac-228 -9.22E-04 6.41E-04 1.84E-03 u AP ONS-6 402840010 6/29/2016 Ag-108m -2.lSE-05 9.27E-05 2.99E-04 u AP ONS-6 402840010 6/29/2016 Ag-llOm -l.23E-04 2.0SE-04 6.37E-04 u AP ONS-6 402840010 6/29/2016 Ba-140 -3.58E-02 5.72E-02 l.71E-01 u AP ONS-6 402840010 6/29/2016 Be-7 l.SlE-01 l.49E-02 l.04E-02 AP ONS-6 402840010 6/29/2016 Ce-141 -l.90E-04 l.OSE-03 3.42E-03 u AP ONS-6 402840010 6/2912016 Ce-144 4.16E-04 8.32E-04 2.73E-03 u AP ONS-6 402840010 6/29/2016 Co-57 2.76E-05 LOSE-04 3.51E-04 u AP ONS-6 402840010 6/29/2016 Co-58 -2.52E-04 3.54E-04 l.03E-03 u AP ONS-6 402840010 6/29/2016 Co-60 -l.77E-05 l.76E-04 5.73E-04 u AP ONS-6 402840010 6/29/2016 Cr-51 -1.33E-02 l.06E-02 3.llE-02 u AP ONS-6 402840010 6/29/2016 Cs-134 l.23E-04 UOE-04 4.64E-04 u AP ONS-6 402840010 6/29/2016 Cs-137 -l.28E-04 l.55E-04 4.50E-04 u AP ONS-6 402840010 6/29/2016 Fe-59 -l.09E-03 9.34E-04 2.35E-03 u AP ONS-6 402840010 6/29/2016 I-131 l.42E-01 3.30E-01 O.OOE+OO UI AP ONS-6 402840010 6/29/2016 K-40 4.49E-04 l.87E-03 6.57E-03 u AP ONS-6 402840010 6/29/2016 La-140 -2.95E-02 2.89E-02 7.37E-02 u AP ONS-6 402840010 6/29/2016 Mn-54 l.26E-04 l.38E-04 5.04E-04 u AP ONS-6 402840010 6/29/2016 Nb-95 -8.31E-04 4.34E-04 9.28E-04 u AP ONS-6 402840010 6/29/2016 Ru-103 6.25E-04 6.lSE-04 2.14E-03 u AP ONS-6 402840010 6/29/2016 Ru-106 -4.96E-04 L41E-03 4.llE-03 u AP ONS-6 402840010 6/29/2016 Sb-124 -4.19E-04 9.54E-04 2.SlE-03 u AP .. ONS.-6 402840010 6/29/2016 Sb-125 -2.19E-04 3.25E-04 9.97E-04 u AP ONS-6 *402840010 6/29/2016 Se-75 -4.55E-04 2.75E-04 7.61E-04 u AP ONS-6 402840010 6/29/2016 Th-228 8.17E-05 2.llE-04 7.21E-04 u AP ONS-6 402840010 6/29/2016 Zn-65 -l.24E-06 4.15E-04 l.38E-03 u AP ONS-6 402840010 6/29/2016 Zr-95 -6.94E-04 7.lOE-04 l.98E-03 u AP NBF 398279001 5/25/2016 BETA 2.31E-02 l.46E-03 l.16E-03 AP SBN 398279002 5/25/2016 BETA 2.45E-02 l.53E-03 l.20E-03 AP DOW 398279003 5/25/2016 BETA 2.41E-02 l.49E-03 l.15E-03 AP COL 398279004 5/25/2016 BETA 2.79E-02 l.61E-03 l.17E-03 AP ONS-1 398279005 5/25/2016 BETA 2.96E-02 1.63E-03 l.14E-03 AP ONS-2 398279006 5/25/2016 BETA 2.53E-02 1.54E-03 l. lSE-03 AP ONS-3 398279007 5/25/2016 BETA 2.37E-02 l.50E-03 1.20E-03 AP ONS-4 398279008 5/25/2016 BETA 2.64E-02 l.55E-03 l.15E-03 AP ONS-5 398279009 5/25/2016 BETA 2.74E-02 l.61E-03 l.19E-03 AP ONS-6 398279010 5125/2016 BETA 2.49E-02 l.52E-03 l.17E-03 D-16 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/1113)

AP NBF 398620001 6/1/2016 BETA 2.19E-02 1.46E-03 l.20E-03 AP SBN 398620002 6/1/2016 BETA 2.24E-02 1.55E-03 l.32E-03 AP DOW 398620003 6/1/2016 BETA 2.13E-02 l.40E-03 l.15E-03 AP COL 398620004 6/1/2016 BETA 2.63E-02 l.56E-03 1.15E-03 AP ONS-1 398620005 6/1/2016 BETA 2.35E-02 l.52E-03 1.21E-03 AP ONS-2 398620006 6/1/2016 BETA 2.38E-02 l.46E-03 1.12E-03 . AP ONS-3 398620007 6/1/2016 BETA 2.61E-02 l.55E-03 l.15E-03 AP ONS-4 398620008 6/1/2016 BETA 2.19E-02 1.42E-03 L15E-03 AP ONS-5 398620009 6/1/2016 BETA 2.42E-02 1.46E-03 1.lOE-03 AP ONS-6 398620010 6/112016 BETA 2.53E-02 1.54E-03 l.18E-03 AP NBF 399139001 6/8/2016 BETA l.75E-02 l.29E-03 1.20E-03 AP SBN 399139002 6/8/2016 BETA 1.40E-02 l.32E-03 1.51E-03 AP DOW 399139003 6/8/2016 BETA l.95E-02 l.34E-03 l.17E-03 AP COL 399139004 6/8/2016 BETA 1.65E-02 l.24E-03 l.17E-03 AP ONS-1 399139005 6/8/2016 BETA 1.61E-02 1.23E-03 l.18E-03 AP ONS-2 399139006 6/8/2016 BETA 1.87E-02 l.3 lE-03 1.16E-03 AP ONS-3 399139007 6/8/2016 BETA 1.58E-02 l.20E-03 1.14E-03 AP ONS-4 399139008 6/8/2016 BETA 1.80E-02 l.29E-03 1.17E-03 AP ONS-5 399139009 6/8/2016 BETA 1.45E-02 1.18E-03 1.20E-03 AP ONS-6 399139010 6/8/2016 BETA l.71E-02 l.27E-03 l.18E-03 AP NBF 399591001 6/15/2016 BETA 2.62E-02 l.55E-03 1.18E-03 AP SBN 399591002 6/15/2016 BETA 2.62E-02 l.57E-03 1.21E-03 AP DOW 399591003 6/15/2016 BETA 2.56E-02 1.52E-03 l.16E-03 AP COL 399591004 6/15/2016 BETA 2.00E-02 l.34E-03 1.15E-03 AP ONS-1 399591005 6/15/2016 BETA 2.32E-02 l.46E-03 l.17E-03 AP ONS-2 399591006 6/15/2016 BETA 2.51E-02 l.50E-03 l.16E-03 AP ONS-3 399591007 6/1512016 BETA 2.75E-02 l.59E-03 1.18E-03 AP ONS-4 399591008 6/1512016 BETA 2.23E-02 l.42E-03 l.16E-03 AP ONS-5 399591009 6/15/2016 BETA 2.51E-02 l.51E-03 l.16E-03 AP ONS-6 399591010 6/15/2016 BETA 2.60E-02 1.55E-03 1.18E-03 AP NBF 400075001 6/22/2016 BETA 2.13E-02 1.40E-03 l.18E-03 AP SBN 400075002 6/22/2016 BETA 2.17E-02 1.44E-03 1.23E-03 AP DOW 400075003 6/22/2016 BETA 2.16E-02 l.40E-03 1. I 7E-03 AP COL 400075004 6/22/2016 BETA 2.llE-02 l.38E-03 l.16E-03 AP ONS-1 400075005 6/22/2016 BETA 2.32E-02 l.74E-03 l.66E-03 AP ONS-2 400075006 6/22/2016 BETA 2.lOE-02 1.40E-03 l.21E-03 AP ONS-3 400075007 6/22/2016 BETA 2.41E-02 1.50E-03 l.20E-03 AP ONS-4 400075008 6/22/2016 BETA 2.16E-02 l.41E-03 l.18E-03 AP ONS-5 400075009 6/22/2016 BETA 2.62E-02 l.44E-03 1.02E-03 AP ONS-6 400075010 6122/2016 BETA 2.67E-02 l.57E-03 1.20E-03 AP NBF 400502001 6/29/2016 BETA l.91E-02 l.33E-03 1.25E-03 AP SBN 400502002 6/29/2016 BETA 1.76E-02 l.31E-03 l.31E-03 AP DOW 400502003 6/29/2016 BETA l.59E-02 l.21E-03 1.23E-03 AP COL 400502004 6/29/2016 BETA 1.70E-02 l.25E-03 1.23E-03 AP ONS-1 400502005 6/29/2016 BETA 1.67E-02 l.64E-03 2.05E-03 AP ONS-2 400502006 6129/2016 BETA 1.54E-02 l.21E-03 l.28E-03 AP ONS-3 400502007 6/29/2016 BETA 1.73E-02 1.28E-03 1.27E-03 AP ONS-4 400502008 6/29/2016 BETA 1.64E-02 l.24E-03 1.25E-03 AP ONS-5 400502009 6/29/2016 BETA l.96E-02 1.36E-03 1.28E-03 AP ONS-6 400502010 612912016 BETA 2.04E-02 l.39E-03 1.28E-03 D-17 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. l\IDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP NBF 401150001 7/6/2016 BETA 2.38E-02 l.49E-03 l.22E-03 AP SBN 401150002 7/6/2016 BETA 2.24E-02 l.46E-03 l.24E-03 AP DOW 401150003 7/6/2016 BETA 2.21E-02 l.44E-03 l.22E-03 AP COL 401150004 7/6/2016 BETA 2.29E-02 l.44E-03 l.19E-03 AP ONS-1 401150005 7/6/2016 BETA 2.13E-02 l.38E-03 l.18E-03 AP ONS-2 401150006 7/6/2016 BETA 2.14E-02 1.40E-03 l.20E-03 AP ONS-3 401150007 7/6/2016 BETA 2.32E-02 1.45E-03 l.19E-03 AP ONS-4 401150008 7/6/2016 BETA 2.18E-02 l.41E-03 l.19E-03 AP ONS-5 401150009 7/6/2016 BETA 2.61E-02 1.57E-03 l.25E-03 AP ONS-6 401150010 7/6/2016 BETA 2.55E-02 l.54E-03 l.23E-03 AP NBF 401711001 7/13/2016 BETA 2.52E-02 1.56£-03 l.24E-03 AP SBN 401711002 7/13/2016 BETA 2.05£-02 l.40E-03 l.23E-03 AP DOW 401711003 7113/2016 BETA. 2.44E-02 1.54£-03 l.25E-03 AP COL 401711004 7/13/2016 BETA 2.20E-02 1.4lE-03 l.16E-03 AP ONS-1 401711005 7113/2016 BETA 2.50E-02 1.50£-03 l.16E-03 AP ONS-2 401711006 7/13/2016 BETA 2.55E-02 l.55E-03 l.22E-03 AP ONS-3 401711007 7113/2016 BETA l.97E-02 1.36£-03 l.21E-03 AP ONS-4 401711008 7113/2016 BETA 2.21E-02 1.42£-03 l.17E-03 AP ONS-5 401711009 7/13/2016 BETA 2.40E-02 l.51E-03 l.22E-03 AP ONS-6 401711010 7/13/2016 BETA 2.43E-02 l.51E-03 l.22E-03 AP NBF 402227001 7/20/2016 BETA l.69E-02 l.29E-03 l.27E-03 AP SBN 402227002 7/20/2016 BETA 2.41E-02 l.52E-03 l.25E-03 AP DOW 402227003 7/20/2016 BETA 2.lOE-02 l.38E-03 l.19E-03 AP COL 402227004 7/20/2016 BETA l.61E-02 l.20E-03 l.16E-03 AP ONS-1 402227005 7/20/2016 BETA l.91E-02 l.29E-03 l.14E-03 AP ONS-2 402227006 7/20/2016 BETA 2.17E-02 l.43E-03 1.23E-03 AP ONS-3 402227007 7/20/2016 BETA 2.28E-02 1.45E-03 1.20E-03 AP ONS-4 402227008 7/20/2016 BETA 2.llE-02 1.37E-03 l.17E-03 AP ONS-5 402227009 7/20/2016 BETA 2.02E-02 l.28E-03 l.07E-03 AP ONS-6 402227010 7/20/2016 BETA l.81E-02 l.32E-03 1.25E-03 AP NBF 402770001 7/27/2016 BETA 2.36E-02 l.51E-03 l.27E-03 AP SBN 402770002 7/27/2016 BETA 3.llE-02 l.72E-03 l.26E-03 AP DOW 402770003 7/27/2016 BETA 2.46E-02 l.50E-03 l.20E-03 AP COL 402770004 7127/2016 BETA 2.78E-02 l.58E-03 l.19E-03 AP ONS-1 402770005 7/27/2016 BETA 2.81E-02 l.59E-03 l.20E-03 AP ONS-2 402770006 7/27/2016 BETA 2.98E-02 l.63E-03 l.18E-03 AP ONS-3 402770007 7/27/2016 BETA 3.31E-02 l.73E-03 l.20E-03 AP ONS-4 402770008 7/27/2016 BETA 2.57E-02 l.52E-03 l.19E-03 AP ONS-5 402770009 7/27/2016 BETA 3.0lE-02 l.65E-03 l.20E-03 AP ONS-6 402770010 7/27/2016 BETA 2.44E-02 l.52E-03 l.25E-03 AP NBF 403299001 8/3/2016 BETA 2.33E-02 l.52E-03 l.29E-03 AP SBN 403299002 8/3/2016 BETA 2.80E-02 1.64E-03 l.26E-03 AP DOW 403299003 8/3/2016 BETA 2.17E-02 1.49£-03 l.33E-03 AP COL 403299004 8/3/2016 BETA 2.25E-02 1.42E-03 l.17E-03 AP ONS-1 403299005 8/3/2016 BETA 2.23E-02 1.43E-03 l.19E-03 AP ONS-2 403299006 8/3/2016 BETA 2.60E-02 l.55E-03 l.22E-03 AP ONS-3 403299007 8/3/2016 BETA 2.78E-02 1.58E-03 l.18E-03 AP ONS-4 403299008 8/3/2016 BETA 2.53£-02 l.55E-03 1.25E-03 AP ONS-5 403299009 8/3/2016 BETA 2.71E-02 l.58E-03 1.22E-03 AP ONS-6 403299010 8/3/2016 BETA 2.48E-02 1.52E-03 l.23E-03 D-18 Donald C. Cook Nuclear Plant Annua.I Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP NBF 403718001 8/10/2016 BETA 2.53E-02 l.54E-03 l.23E-03 AP SBN 403718002 8/10/2016 BETA 3.08E-02 l.71E-03 l.25E-03 AP DOW 403718003 8/10/2016 BETA 2.91E-02 l.60E-03 1.16E-03 AP COL 403718004 8/10/2016 BETA 2.94E-02 l.63E-03 1.18E-03 AP ONS-1 403718005 8/10/2016 BETA 2.61E-02 l.53E-03 1.18E-03 AP ONS-2 403718006 8/10/2016 BETA 2.41E-02 l.50E-03 l.22E-03 .

AP ONS-3 403718007 8/10/2016 BETA 2.76E-02 1.58E-03 1.19E-03 AP ONS-4 403718008 8/10/2016 BETA 2.68E-02 l.56E-03 1.19E-03 AP ONS-5 403718009 8/10/2016 BETA 2.78E-02 l.60E-03 l.20E-03 AP ONS-6 403718010 8/10/2016 BETA 2.70E-02 l.58E-03 l.22E-03 AP NBF 404249001 8/17/2016 BETA 3.00E-02 l.64E-03 1.13E-03 AP SBN 404249002 8/17/2016 BETA 2.63E-02 l.59E-03 l.20E-03 AP DOW 404249003 8/17/2016 BETA 2.43E-02 1.47E-03 1.l IE-03 AP COL 404249004 8/17/2016 BETA 2.89E-02 l.93E-03 l.60E-03 AP ONS-1 404249005 8/17/2016 BETA 2.50E-02 l.49E-03 1.IIE-03 AP ONS-2 404249006 8/17/2016 BETA 2.68E-02 l.56E-03 1.14E-03 AP ONS-3 404249007 8/17/2016 BETA 2.70E-02 l.57E-03 1.14E-03 AP ONS-4 404249008 8/17/2016 BETA 2.81E-02 l.58E-03 1.12E-03 AP ONS-5 404249009 8/17/2016 BETA 2.56E-02 l.53E-03 1.15E-03 AP ONS-6 404249010 8/17/2016 BETA 2.41E-02 l.49E-03 1.16E-03 AP NBF 409456001 9/28/2016 Ac-228 -l.62E-04 5.24E-04 1.87E-03 u AP NBF 409456001 9/28/2016 Ag-108m -2.50E-05 l.03E-04 3.26E-04 u AP NBF 409456001 9/28/2016 Ag-llOm -l.67E-04 2.14E-04 6.26E-04 u AP NBF 409456001 9/28/2016 Ba-140 6.09E-02 5.15E-02 l.79E-01 u AP NBF 409456001 9/28/2016 Be-7 1.44E-OI 1.04E-02 8.81E-03 AP NBF 409456001 9/28/2016 Ce-141 -6.97E-05 8.86E-04 2.75E-03 u AP NBF 409456001 9/28/2016 Ce-144 -7.0IE-05 6.80E-04 2.12E-03 u AP NBF 409456001 9/28/2016 Co-57 -1.31E-05 9.78E-05 3.05E-04 u AP NBF 409456001 9/28/2016 Co-58 -2.58E-04 3.73E-04 1.04E-03 u AP NBF 409456001 9/28/2016 Co-60 l.93E-04 l.06E-04 4.50E-04 u AP NBF 409456001 9/28/2016 Cr-51 6.15E-03 8.08E-03 2.78E-02 u AP NBF 409456001 9/28/2016 Cs-134 -1.33E-04 l.65E-04 4.69E-04 u AP NBF 409456001 9/28/2016 Cs-137 1.04E-05 1.48E-04 4.90E-04 u AP NBF 409456001 9/28/2016 Fe-59 1.82E-04 9.06E-04 3.05E-03 u AP NBF 409456001 9/28/2016 I-131 1.07E-01 2.28E-01 O.OOE+OO U1 AP NBF 409456001 9/28/2016 K-40 -7.22E-04 2.07E-03 8.06E-03 u AP NBF 409456001 9/28/2016 La-140 7.40E-03 2.00E-02 7.08E-02 u AP NBF 409456001 9/28/2016 Mn-54 3.34E-04 1.12E-04 4.25E-04 u AP NBF 409456001 9/28/2016 Nb-95 2.30E-04 3.75E-04 1.36E-03 u AP NBF 409456001 9/28/2016 Ru-103 -6.46E-05 4.62E-04 1.47E-03 u AP NBF 409456001 9/28/2016 Ru-106 -l.06E-03 1.50E-03 4.33E-03 u AP NBF 409456001 9/28/2016 Sb-124 l.87E-05 4.72E-04 1.60E-03 u AP NBF 409456001 9/28/2016 Sb-125 -l.03E-04 3.56E-04 1.13E-03 u AP NBF 409456001 9/28/2016 Se-75 9.79E-05 I.93E-04 6.66E-04 u AP NBF 409456001 9/28/2016 Th-228 -4.54E-05 2.06E-04 6.80E-04 u AP NBF 409456001 9/28/2016 Zn-65 -1.llE-04 4.24E-04 1.34E-03 u AP NBF 409456001 9/28/2016 Zr-95 -2.55E-04 4.99E-04 l.56E-03 u AP SBN 409456002 9/28/2016 Ac-228 -l.27E-04 4.56E-04 1.52E-03 u AP SBN 409456002 9/28/2016 Ag-108m 7.29E-05 9.llE-05 3.17E-04 u AP SBN 409456002 9/28/2016 Ag-llOm -3.09E-04 l.71E-04 3.33E-04 u D-19 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP SBN 409456002 9/28/2016 Ba-140 3.33E-03 3.53E-02 1.17E-01 u AP SBN 409456002 9/28/2016 Be-7 l.29E-01 l.05E-02 7.94E-03 AP SBN 409456002 9/28/2016 Ce-141 1.40E-04 6.79E-04 2.20E-03 u AP SBN 409456002 9/28/2016 Ce-144 6.06E-04 5.81E-04 l.94E-03 u AP SBN 409456002 9/28/2016 Co-57 l.54E-04 8.39E-05 2.76E-04 u AP SBN 409456002 9/28/2016 Co-58 -2.56E-04 1.80E-04 4.14E-04 u AP SBN 409456002 9/28/2016 Co-60 -3.75E-05 l.41E-04 4.40E-04 u AP SBN 409456002 9/28/2016 Cr-51 -7.15E-03 6.40E-03 l.90E-02 u AP SBN 409456002 9/28/2016 Cs-134 1.35E-04 l.16E-04 4.20E-04 u AP SBN 409456002 9/28/2016 Cs-137 7.31E-05 1.05E-04 3.63E-04 u AP SBN 409456002 9/28/2016 Fe-59 -7.89E-04 5.64E-04 l.OOE-03 u AP SBN 409456002 9/28/2016 I-131 1.94E-02 2.20E-01 O.OOE+OO UI AP SBN 409456002 9/28/2016 K-40 -1.97E-04 1.40E-03 5.41E-03 u AP SBN 409456002 9/28/2016 La-140 -l.85E-03 l.64E-02 5.14E-02 u AP SBN 409456002 9/28/2016 Mn-54 -1.05E-04 9.91E-05 2.66E-04 u AP SBN 409456002 9/28/2016 Nb-95 -1.44E-04 2.89E-04 8.52E-04 u AP SBN 409456002 9/28/2016 Ru-103 l.67E-04 3.63E-04 l.25E-03 u AP SBN 409456002 9/28/2016 Ru-106 -l.23E-03 l.03E-03 2.64E-03 u AP SBN 409456002 9/28/2016 Sb-124 4.34E-04 6.09E-04 2.29E-03 u AP SBN 409456002 9/28/2016 Sb-125 -9.78E-05 2.82E-04 9.04E-04 u AP SBN 409456002 9/28/2016 Se-75 l.25E-04 l.82E-04 6.42E-04 u AP SBN 409456002 9/28/2016 Th-228 -l.19E-04 1.65E-04 5.41E-04 u AP SBN 409456002 9/28/2016 Zn-65 2.31E-05 3.25E-04 9.63E-04 u AP SBN 409456002 9/28/2016 Zr-95 l.48E-04 4.30E-04 l.44E-03 u AP DOW 409456003 9/28/2016 Ac-228 3.42E-04 4.67E-04 l.78E-03 u AP DOW 409456003 9/28/2016 Ag-108m -l.lOE-04 8.86E-05 2.50E-04 u AP DOW 409456003 9/28/2016 Ag-llOm l.58E-04 l.47E-04 5.48E-04 u AP DOW 409456003 9/28/2016 Ba-140 3.l lE-02 3.79E-02 1.31E-01 u AP DOW 409456003 9/28/2016 Be-7 l.55E-01 l.07E-02 6.09E-03 AP DOW 409456003 9/28/2016 Ce-141 4.56E-04 6.73E-04 2.21E-03 u AP DOW 409456003 9/28/2016 Ce-144 -7.81E-05 5.68E-04 l.80E-03 u AP DOW 409456003 9/28/2016 Co-57 -2.70E-05 6.93E-05 2.16E-04 u AP DOW 409456003 9/28/2016 Co-58 2.32E-04 2.llE-04 7.78£-04 u AP DOW 409456003 9/28/2016 Co-60 2.53E-04 l.41E-04 5.33E-04 u AP DOW 409456003 9/28/2016 Cr-51 -l.43E-02 6.89E-03 l.67E-02 u AP DOW 409456003 9/28/2016 Cs-134 -l.23E-04 l.56E-04 3.70£-04 u AP DOW 409456003 9/28/2016 Cs-137 -3.69E-05 9.62E-05 2.93E-04 u AP DOW 409456003 9/28/2016 Fe-59 -2.20E-03 l.05E-03 u AP DOW 409456003 9/28/2016 I-131 2.77E-01 l.53E-01 O.OOE+OO UI AP DOW 409456003 9/28/2016 K-40 -1.70E-03 l.67E-03 5.54£-03 u AP DOW 409456003 9/28/2016 La-140 6.89E-03 l.04E-02 3.90E-02 u AP DOW 409456003 9/28/2016 Mn-54 8.32E-05 l.25E-04 3.67£-04 u AP DOW 409456003 9/28/2016 Nb-95 -2.00E-04 2.45E-04 6.74E-04 u AP DOW 409456003 9/28/2016 Ru-103 -2.52E-04 3.27E-04 9.54E-04 u AP DOW 409456003 9/28/2016 Ru-106 -l.30E-03 l.29E-03 3.65E-03 u AP DOW 409456003 9/28/2016 Sb-124 -l.50E-03 8.42E-04 l.23E-03 u AP DOW 409456003 9/28/2016 Sb-125 l.44E-04 2.05E-04 7.19E-04 u AP DOW 409456003 9/28/2016 Se-75 -9.68E-05 l.80E-04 5.90E-04 u AP DOW 409456003 9/28/2016 Th-228 3.34E-04 2.99E-04 5.98E-04 u AP DOW 409456003 9/28/2016 Zn-65 l.83E-05 3.56E-04 l.19E-03 u D-20 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP DOW 409456003 9/28/2016 Zr-95 -6.05E-05 4.12E-04 1.28E-03 u AP COL 409456004 9/28/2016 Ac-228

6.58E-05 4.58E-04 l.59E-03 u AP COL 409456004 9/28/2016 Ag-108m -1.66E-04 1.05E-04 2.51E-04 u AP COL 409456004 9/28/2016 Ag-llOm -2.78E-04 2.03E-04 4.75E-04 u AP COL 409456004 9/28/2016 Ba-140 -4.95E-02 3.75E-02 9.87E-02 u AP COL 409456004 9/28/2016 Be-7 1.43E-Ol 1.0lE-02 8.12E-03 AP COL 409456004 9/28/2016 Ce-141 -7.79E-04 6.48E-04 l.96E-03 u AP COL 409456004 9/28/2016 Ce-144 -2.84E-04 5.35E-04 l.77E-03 u AP COL 409456004 9/28/2016 Co-57 l.50E-06 7.21E-05 2.26E-04 u AP COL 409456004 9/28/2016 Co-58 2.09E-04 l.92E-04 7.29E-04 u AP COL 409456004 9/28/2016 Co-60 -1.33E-04 1.28E-04 3.20E-04 u AP COL 409456004 9/28/2016 Cr-51 4.06E-03 6.43E-03 2.20E-02 u AP COL 409456004 9/28/2016 Cs-134 6.05E-05 1.46E-04 5.04E-04 u AP COL 409456004 9/28/2016 Cs-137 -5.63E-05 1.llE-04 3.46E-04 u AP COL 409456004 9/28/2016 Fe-59 -5.96E-05 5.73E-04 l.79E-03 u AP COL 409456004 9/28/2016 I-131 8.61E-03 1.71E-Ol O.OOE+OO ur AP COL 409456004 9/28/2016 K-40 5.77E-04 2.04E-03 7.50E-03 u AP COL 409456004 9/28/2016 La-140 2.71E-02 2.07E-02 7.94E-02 u AP COL 409456004 9/28/2016 Mn-54 l.61E-04 1.87E-04 6.54E-04 u AP COL 409456004 9/28/2016 Nb-95 4.07E-05 2.34E-04 7.93E-04 u AP COL 409456004 9/28/2016 Ru-103 5.09E-05 3.15E-04 1.03E-03 u AP COL 409456004 9/28/2016 Ru-106 3.60E-04 1.23E-03 4.21E-03 u AP COL 409456004 9/28/2016 Sb-124 -3.71E-04 6.24E-04 1.63E-03 u AP COL 409456004 9/28/2016 Sb-125 l.67E-04 3.17E-04 9.70E-04 u AP COL 409456004 9/28/2016 Se-75 4.14E-04 2.16E-04 7.36E-04 u AP COL 409456004 9/28/2016 Th-228 2.41E-04 3.24E-04 5.13E-04 u AP COL 409456004 9/28/2016 Zn-65 -2.70E-04 3.46E-04 9.36E-04 u AP COL 409456004 9/28/2016 Zr-95 2.77E-04 4.94E-04 1.74E-03 u AP ONS-1 409456005 9/28/2016 Ac-228 6.40E-05 4.51E-04 l.59E-03 u AP ONS-1 409456005 9/28/2016 Ag-108m -7.26E-05 8.53E-05 2.49E-04 u AP ONS-1 409456005 9/28/2016 Ag-llOm 7.36E-05 1.78E-04 4.94E-04 u AP ONS-1 409456005 9/28/2016 Ba-140 -4.80E-02 3.32E-02 8.93E-02 u AP ONS-1 409456005 9/28/2016 Be-7 1.17E-Ol 9.40E-03 6.59E-03 AP ONS-1 409456005 9/28/2016 Ce-141 -7.05E-04 6.79E-04 1.94E-03 u AP ONS-1 409456005 9/28/2016 Ce-144 3.00E-04 4.96E-04 l.64E-03 u AP ONS-1 409456005 9/28/2016 Co-57 7.29E-05 7.20E-05 2.40E-04 u AP ONS-1 409456005 9/28/2016 Co-58 4.02E-04 2.31E-04 8.lOE-04 u AP ONS-1 409456005 9/28/2016 Co-60 -8.38E-06 1.23E-04 3.95E-04 u AP ONS-1 409456005 9/28/2016 Cr-51 -7.07E-03 6.25E-03 1.83E-02 u AP ONS-1 409456005 9/28/2016 Cs-134 1.25E-04 1.0IE-04 3.36E-04 u AP ONS-1 409456005 9/28/2016 Cs-137 l.llE-04 8.84E-05 3.14E-04 u AP ONS-1 409456005 9/28/2016 Fe-59 -l.61E-03 8.29E-04 1.75E-03 u AP ONS-1 409456005 9/28/2016 I-131 1.30E-Ol 1.49E-Ol O.OOE+OO ur AP ONS-1 409456005 9/28/2016 K-40 l.27E-03 1.99E-03 4.03E-03 u AP ONS-1 409456005 9/28/2016 La-140 -2.52E-03 1.62E-02 5.31E-02 u AP ONS-1 409456005 9/28/2016 Mn-54 3.78E-05 1.59E-04 4.54E-04 u AP ONS-1 409456005 9/28/2016 Nb-95 4.82E-04 2.88E-04 9.86E-04 u AP ONS-1 409456005 9/28/2016 Ru-103 -2.80E-05 3.40E-04 7.23E-04 u AP ONS-1 409456005 9/28/2016 Ru-106 -l.06E-03 1.03E-03 3.02E-03 u AP ONS-1 409456005 9/28/2016 Sb-124 2.95E-04 8.24E-04 2.84E-03 u D-21 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION .. LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-1 409456005 9/28/2016 Sb-125 -5.05E-04 2.81E-04 6.88E-04 u AP ONS-1 409456005 9/28/2016 Se-75 l.52E-04 l.53E-04 5.31E-04 u AP ONS-1 409456005 9/28/2016 Th-228 2.85E-04 1.93E-04 5.69E-04 u AP ONS-1 409456005 9/28/2016 Zn-65 -1.78E-05 2.82E-04 9.29E-04 u AP ONS-1 409456005 9/28/2016 Zr-95 5.49E-04 5.34E-04 l.38E-03 u AP ONS-2 409456006 9/28/2016 Ac-228 -4.66E-04 5.12E-04 1.82E-03 u AP ONS-2 409456006 9/28/2016 Ag-108m -6.56E-05 l.llE-04 3.50E-04 u AP ONS-2 409456006 9/28/2016 Ag-llOm -4.07E-04 2.88E-04 5.95E-04 u AP ONS-2 409456006 9/28/2016 Ba-140 1.42E-02 4.35E-02 l.53E-Ol u AP ONS-2 409456006 9/28/2016 Be-7 1.47E-Ol l.37E-02 7.97E-03 AP ONS-2 409456006 9/28/2016 Ce-141 -1.64E-03 8.93E-04 2.21E-03 u AP ONS-2 409456006 9/28/2016 Ce-144 -4.65E-05 5.48E-04 l.81E-03 u AP ONS-2 409456006 9/28/2016 Co-57 l.18E-05 6.67E-05 2.26E-04 u AP ONS-2 409456006 9/28/2016 Co-58 2.30E-05 2.38E-04 7.93E-04 u AP ONS-2 409456006 9/28/2016 Co-60 -7.l lE-05 l.36E-04 3.79E-04 u AP ONS-2 409456006 9/28/2016 Cr-51 -6.44E-03 6.88E-03 1.80E-02 u AP ONS-2 409456006 9/28/2016 Cs-134 l.19E-04 l.22E-04 4.76E-04 u AP ONS-2 409456006 9/28/2016 Cs-137 -l.30E-04 l.36E-04 3.59E-04 u AP ONS-2 409456006 9/28/2016 Fe-59 -5.25E-04 8.93E-04 2.57E-03 u AP ONS-2 409456006 9/28/2016 1-131 -l.93E-02 2.16E-01 O.OOE+OO u AP ONS-2 409456006 9/28/2016 K-40 l.47E-03 2.06E-03 8.42E-03 u AP ONS-2 409456006 9/28/2016 La-140 -3.64E-02 2.27E-02 O.OOE+OO u AP ONS-2 409456006 9/28/2016 Mn-54 5.58E-05 l.84E-04 6.24E-04 u AP ONS-2 409456006 9/28/2016 Nb-95 2.26E-04 2.38E-04 9.28E-04 u AP ONS-2 409456006 9/28/2016 Ru-103 2.54E-04 6.17E-04 l.99E-03 u AP ONS-2 409456006 9/28/2016 Ru-106 -4.32E-04 l.22E-03 3.80E-03 u AP ONS-2 409456006 9/28/2016 Sb-124 -1.23E-05 8.20E-04 2.67E-03 u AP ONS-2 409456006 9/28/2016 Sb-125 7.85E-05 2.31E-04 8.26E-04 u AP ONS-2 409456006 9/28/2016 Se-75 -l.45E-04 2.20E-04 6.42E-04 u AP ONS-2 409456006 9/28/2016 Th-228 3.71E-04 2.76E-04 8.15E-04 u AP QNS.-2 409456006 9/28/2016 Zn-65 -8.70E-05 4.12E-04 l.35E-03 u AP ONS-2 409456006 9/28/2016 Zr-95 -1.64E-04 3.86E-04 LlOE-03 u AP ONS-3 409456007 9/28/2016 Ac-228 -4.51E-04 3.34E-04 8.13E-04 u AP ONS-3 409456007 9/28/2016 Ag-108m 1.52E-04 9.13E-05 3.22E-04 u AP ONS-3 409456007 9/28/2016 Ag-llOm -1.64E-04 l.32E-04 2.68E-04 u AP ONS-3 409456007 9/28/2016 Ba-140 7.07E-03 3.94E-02 l.36E-01 u AP ONS-3 409456007 9/28/2016 Be-7 l.29E-Ol l.03E-02 5.94E-03 AP ONS-3 409456007 9/28/2016 Ce-141 -2.22E-04 6.15E-04 2.05E-03 u AP ONS-3 409456007 9/28/2016 Ce-144 2.53E-04 4.49E-04 l.59E-03 u AP ONS-3 409456007 9/28/2016 Co-57 -3.44E-05 7.52E-05 2.25E-04 u AP ONS-3 409456007 9/28/2016 Co-58 7.0lE-05 l.83E-04 6.41E-04 u AP ONS-3 409456007 9/28/2016 Co-60 -1.76E-04 l.18E-04 2.20E-04 u AP ONS-3 409456007 9/28/2016 Cr-51 -7.63E-05 7.27E-03 2.38E-02 u AP ONS-3 409456007 9/28/2016 Cs-134 -7.14E-05 l.56E-04 4.07E-04 u AP ONS-3 409456007 9/28/2016 Cs-137 -9.96E-05 9.65E-05 2.62E-04 u AP ONS-3 409456007 9/28/2016 Fe-59 5.04E-04 5.61E-04 2.15E-03 u AP ONS-3 409456007 9/28/2016 1-131 -1.21E-Ol l.90E-01 O.OOE+OO u AP ONS-3 409456007 9/28/2016 K-40 -2.76E-03 l.21E-03 2.19E-03 u AP ONS-3 409456007 9/28/2016 La-140 -l.46E-02 2.05E-02 5.75E-02 u AP ONS-3 409456007 9/28/2016 Mn-54 1.67E-04 l.24E-04 4.63E-04 u D-22 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-3 409456007 9/28/2016 Nb-95 -l.81E-04 2.20E-04 6.08E-04 u AP ONS-3 409456007 9/28/2016 Ru-103 -2.36E-04 4.3IE-04 l.26E-03 u AP ONS-3 409456007 9/28/2016 Ru-106 1.29E-05 1.12E-03 3.84E-03 u AP ONS-3 409456007 9/28/2016 Sb-124 3.42E-04 3.51E-04 l.59E-03 u AP ONS-3 409456007 9/28/2016 Sb-125 -l.28E-05 2.57E-04 8.20E-04 u AP ONS-3 409456007 9/28/2016 Se-75 -l.70E-04 1.87E-04 5.62E-04 u AP ONS-3 409456007 9/28/2016 Th-228 l.47E-04 2.llE-04 4.88E-04 u AP ONS-3 409456007 9/28/2016 Zn-65 -l.77E-04 3.77E-04 1.12E-03 u AP ONS-3 409456007 9/28/2016 Zr-95 -2.43E-04 4.08E-04 l.20E-03 u AP ONS-4 409456008 9/28/2016 Ac-228 -4.72E-04 5.0lE-04 l.51E-03 u AP ONS-4 409456008 9/28/2016 Ag-108m -1.50E-05 1.04E-04 3.40E-04 u AP ONS-4 409456008 9/28/2016 Ag-1 lOm -8.92E-05 1.88E-04 5.48E-04 u AP ONS-4 409456008 9/28/2016 Ba-140 4.96E-02 4.69E-02 1.69E-01 u AP ONS-4 409456008 9/28/2016 Be-7 1.64E-01 l.27E-02 9.28E-03 AP ONS-4 409456008 9/28/2016 Ce-141 l.08E-03 1.12E-03 2.53E-03 u AP ONS-4 409456008 9/28/2016 Ce-144

6.41E-05 5.66E-04 l.96E-03 u AP ONS-4 409456008 9/28/2016 Co-57 -7.85E-05 7.83E-05 2.47E-04 u AP ONS-4 409456008 9/28/2016 Co-58 -9.97E-05 2.08E-04 5.99E-04 u AP ONS-4 409456008 9/28/2016 Co-60 l.15E-04 1.23E-04 4.73E-04 u AP ONS-4 409456008 9/28/2016 Cr-51 3.81E-03 6.25E-03 2.19E-02 u AP ONS-4 409456008 9/28/2016 Cs-134 -2.88E-04 l.65E-04 3.59E-04 u AP ONS-4 409456008 9/28/2016 Cs-137 1.24E-04 l.llE-04 4.05E-04 u AP ONS-4 409456008 9/28/2016 Fe-59 8.74E-04 8.30E-04 2.94E-03 u AP ONS-4 409456008 9/28/2016 I-131 -4.0IE-02 l.76E-01 O.OOE+OO u AP ONS-4 409456008 9/28/2016 K-40 -3.45E-03 l.77E-03 4.63E-03 u AP ONS-4 409456008 9/28/2016 La-140 4.94E-03 l.63E-02 5.80E-02 u AP ONS-4 409456008 9/28/2016 Mn-54 6.68E-05 l.28E-04 4.44E-04 u AP ONS-4 409456008 9/28/2016 Nb-95 2.77E-05 2.35E-04 7.76E-04 u AP ONS-4 409456008 9/28/2016 Ru-103 3.90E-04 4.71E-04 l.66E-03 u AP ONS-4 409456008 9/28/2016 Ru-106 -1.21E-03 l.28E-03 3.59E-03 u AP ONS-4 409456008 9/28/2016 Sb-124 -L36E-03 9.09E-04 1.69E-03 u AP ONS-4 409456008 9/28/2016 Sb-125 -2.21E-05 2.62E-04 8.61E-04 u AP ONS-4 409456008 9/28/2016 Se-75 3.94E-05 1.89E-04 6.46E-04 u AP ONS-4 409456008 9/28/2016 Th-228 -6.99E-05 1.69E-04 5.78E-04 u AP ONS-4 409456008 9/28/2016 Zn-65 -7.60E-04 4.13E-04 6.91E-04 u AP ONS-4 409456008 9/28/2016 Zr-95 l.26E-04 4.86E-04 1.63E-03 u AP ONS-5 409456009 9/28/2016 Ac-228 7.30E-04 5.71E-04 2.13E-03 u AP ONS-5 409456009 9/28/2016 Ag-108111

-1.40E-04 1.14E-04 3.15E-04 u AP ONS-5 409456009 9/28/2016 Ag-110111

-2.20E-04 2.31E-04 6.59E-04 u AP ONS-5 409456009 9/28/2016 Ba-140 -9.95E-03 5.25E-02 1.65E-01 u AP ONS-5 409456009 9/28/2016 Be-7 1.51E-Ol 1.09E-02 9.88E-03 AP ONS-5 409456009 9/28/2016 Ce-141 -2.79E-04 9.24E-04 2.82E-03 u AP ONS-5 409456009 9/28/2016 Ce-144 7.30E-04 6.41E-04 2.IOE-03 u AP ONS-5 409456009 9/28/2016 Co-57 -7.23E-05 8.42E-05 2.43E-04 u AP ONS-5 409456009 9/28/2016 Co-58 -7.20E-05 2.73E-04 8.84E-04 u AP ONS-5 409456009 9/28/2016 Co-60 -3.88E-07 1.23E-04 3.96E-04 u AP ONS-5 409456009 9/28/2016 Cr-51 1.86E-03 8.80E-03 2.67E-02 u AP ONS-5 409456009 9/28/2016 Cs-134 -2.49E-04 l.63E-04 3.77E-04 u AP ONS-5 409456009 9/28/2016 Cs-137 2.54E-04 l.42E-04 4.32E-04 u AP ONS-5 409456009 9/28/2016 Fe-59 4.59E-04 9.50E-04 3.31E-03 u D-23 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-5 409456009 9/28/2016 I-131 l.53E-01 2.37E-01 O.OOE+OO UI AP ONS-5 409456009 9/28/2016 K-40 4.57E-03 3.24E-03 5.84E-03 u AP ONS-5 409456009 9/28/2016 La-140 -6.93E-03 1.85E-02 5.72E-02 u AP ONS-5 409456009 9128/2016 Mn-54 1.37E-04 1.59E-04 5.69E-04 u AP ONS-5 409456009 9/28/2016 Nb-95 -2.16E-05 2.08E-04 7.34E-04 u AP ONS-5 409456009 9/28/2016 Ru-103 -1.24E-04 6.38E-04 2.02E-03 u AP ONS-5 409456009 9/28/2016 Ru-106 1.70E-04 1.43E-03 4.61E-03 u AP ONS-5 409456009 9128/2016 Sb-124 -9.64E-04 6.00E-04 O.OOE+OO u AP ONS-5 409456009 9/28/2016 Sb-125 3.65E-04 3.64E-04 1.25E-03 u AP ONS-5 409456009 9128/2016 Se-75 3.43E-04 2.28E-04 7.85E-04 u AP ONS-5 409456009 9/28/2016 Th-228 -l.38E-04 1.94E-04 6.15E-04 u AP ONS-5 409456009 9/28/2016 Zn-65 -l.20E-04 3.62E-04 l.12E-03 u AP ONS-5 409456009 9/28/2016 Zr-95 -7.74E-05 5.14E-04 l.70E-03 u AP ONS-6 409456010 9/28/2016 Ac-228 l.68E-03 7.52E-04 2.28E-03 u AP ONS-6 409456010 9/28/2016 Ag-108m -9.47E-05 8.90E-05 2.55E-04 u AP ONS-6 409456010 9/28/2016 Ag-llOm -2.06E-04 l.86E-04 5.05E-04 u AP ONS-6 409456010 9/2812016 Ba-140 -2.93E-02 3.37E-02 9.23E-02 u AP ONS-6 409456010 9/28/2016 Be-7 1.43E-01 l.14E-02 7.76E-03 AP ONS-6 409456010 9/28/2016 Ce-141 4.45E-04 7.84E-04 2.58E-03 u AP ONS-6 409456010 9/28/2016 Ce-144 -7.03E-04 5.82E-04 1.62E-03 u AP ONS-6 409456010 9/28/2016 Co-57 9.39E-06 6.28E-05 2.05E-04 u AP ONS-6 409456010 9/28/2016 Co-58 -7.lOE-06 2.23E-04 7.55E-04 u AP ONS-6 409456010 9/28/2016 Co-60 8.63E-05 1.36E-04 4.88E-04 u AP ONS-6 409456010 9/2812016 Cr-51 3.40E-04 6.59E-03 2.24E-02 u AP ONS-6 409456010 9/28/2016 Cs-134 l.35E-04 1.31E-04 4.66E-04 u AP ONS-6 409456010 9128/2016 Cs-137 -4.06E-05 1.09E-04 3.30E-04 u AP ONS-6 409456010 9/28/2016 Fe-59 2.20E-04 9.41E-04 3.22E-03 u AP ONS-6 409456010 9128/2016 I-131 3.09E-01 2.15E-01 O.OOE+OO UI AP ONS-6 409456010 9/28/2016 K-40 6.63E-04 1.44E-03 5.95E-03 u AP ONS-6 409456010 9/28/2016 La-140 -l.73E-02 l.93E-02 4.77E-02 u AP ONS-6 409456010 9/28/2016 Mn-54 -6.74E-05 l.25E-04 3.93E-04 u AP ONS-6 409456010 9/28/2016 Nb-95 -2.79E-04 2.77E-04 7.15E-04 u AP ONS-6 409456010 9/28/2016 Ru-103 -9.17E-04 4.43E-04 8.43E-04 u AP ONS-6 409456010 9/28/2016 Ru-106 2.30E-04 8.69E-04 2.92E-03 u AP ONS-6 409456010 9/28/2016 Sb-124 l.49E-04 7.47E-04 2.50E-03 u AP ONS-6 409456010 9/28/2016 Sb-125 l.39E-04 2.49E-04 8.67E-04 u AP ONS-6 409456010 9/28/2016 Se-75 1.63E-04 l.98E-04 6.99E-04 u AP ONS-6 409456010 9/28/2016 Th-228 1.64E-04 2.13E-04 6.53E-04 u AP ONS-6 409456010 9/28/2016 Zn-65 -4.05E-06 3.0IE-04 9.96E-04 u AP ONS-6 409456010 9/28/2016 Zr-95 -2.09E-04 3.55E-04 9.75E-04 u AP NBF 404740001 8/24/2016 BETA 2.23E-02 l.46E-03 l.19E-03 AP SBN 404740002 8/24/2016 BETA 2.28E-02 l.48E-03 l.19E-03 AP DOW 404740003 8/24/2016 BETA 2.40E-02 l.48E-03 l.14E-03 AP COL 404740004 8/2412016 BETA 2.06E-02 l.42E-03 l.22E-03 AP ONS-1 404740005 8/24/2016 BETA 2.50E-02 l.53E-03 l.17E-03 AP ONS-2 404740006 8/24/2016 BETA 2.79E-02 1.60E-03 l.15E-03 AP ONS-3 404740007 8/24/2016 BETA 2.25E-02 l.40E-03 l. lOE-03 AP ONS-4 404740008 8/24/2016 BETA 2.23E-02 1.46E-03 l.19E-03 AP ONS-5 404740009 8/24/2016 BETA 2.23E-02 l.45E-03 l.17E-03 AP ONS-6 404740010 8/24/2016 BETA l.94E-02 l.40E-03 l.25E-03 D-24 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP NBF 405181001 8/31/2016 BETA 2.52E-02 l.55E-03 l.29E-03 AP SBN 405181002 8/31/2016 BETA 2.47E-02 1.54E-03 l.31E-03 AP DOW 405181003 8/31/2016 BETA 2.44E-02 l.51E-03 1.26E-03 AP COL 405181004 8/31/2016 BETA 2.44E-02 1.52E-03 l.29E-03 AP ONS-1 405181005 8/31/2016 BETA 2.25E-02 l.46E-03 l.28E-03 AP ONS-2 405181006 8/31/2016 BETA 2.32E-02 l.46E-03 l.25E-03 AP ONS-3 405181007 8/31/2016 BETA 2.37E-02 l.46E-03 l.23E-03 AP ONS-4 405181008 8/31/2016 BETA 2.52E-02 l.55E-03 l.30E-03 AP ONS-5 405181009 8/31/2016 BETA 2.90E-02 l.67E-03 1.30E-03 AP ONS-6 405181010 8/31/2016 BETA 2.36E-02 l.51E-03 l.31E-03 AP NBF 405568001 917/2016 BETA 2.30E-02 l.45E-03 1.24E-03 AP SBN 405568002 917/2016 BETA 2.26E-02 l.47E-03 l.29E-03 AP DOW 405568003 917/2016 BETA 2.12E-02 l.40E-03 l.25E-03 AP COL 405568004 917/2016 BETA 2.03E-02 l.40E-03 l.29E-03 AP ONS-1 405568005 917/2016 BETA 2.20E-02 l.43E-03 l.27E-03 AP ONS-2 405568006 917/2016 BETA 2.37E-02 l.47E-03 l.24E-03 AP ONS-3 405568007 917/2016 BETA 2.13E-02 1.46E-03 1.34E-03 AP ONS-4 405568008 917/2016 BETA 2.15E-02 l.43E-03 l.29E-03 AP ONS-5 405568009 917/2016 BETA 2.45E-02 1.53E-03 1.29E-03 AP ONS-6 405568010 917/2016 BETA 2.IOE-02 l.43E-03 l.30E-03 AP NBF 406075001 9/14/2016 BETA 2.07E-02 l.42E-03 1.32E-03 AP SBN 406075002 9/14/2016 BETA 2.02E-02 l.40E-03 1.33E-03 AP DOW 406075003 9/14/2016 BETA 2.09E-02 l.42E-03 l.32E-03 AP COL 406075004 9/14/2016 BETA 2.llE-02 l.43E-03 1.32E-03 AP ONS-1 406075005 9/14/2016 BETA 2.00E-02 l.36E-03 l.26E-03 AP ONS-2 406075006 9/14/2016 BETA 2.04E-02 l.40E-03 1.30E-03 AP ONS-3 406075007 9/14/2016 BETA l.88E-02 l.33E-03 l.27E-03 AP ONS-4 406075008 9/14/2016 BETA 2.25E-02 l.45E-03 l.28E-03 AP ONS-5 406075009 9/14/2016 BETA 2.51E-02 l.53E-03 l.28E-03 AP ONS-6 406075010 9/14/2016 BETA I.48E-02 l.86E-03 2.80E-03 AP NBF 406606001 9/21/2016 BETA 3.22E-02 l.70E-03 l.l lE-03 AP SBN 406606002 9/21/2016 BETA 3.83E-02 l.89E-03 l.15E-03 AP DOW 406606003 9/21/2016 BETA 3.lOE-02 l.72E-03 l.17E-03 AP COL 406606004 9/2112016 BETA 3.04E-02 l.69E-03 1.15E-03 AP ONS-1 406606005 9/21/2016 BETA 3.lOE-02 l.68E-03 1.12E-03 AP ONS-2 406606006 9/2112016 BETA 3.31E-02 l.76E-03 l.15E-03 AP ONS-3 406606007 9/21/2016 BETA 3.00E-02 1.64E-03 1.lOE-03 AP ONS-4 406606008 9/21/2016 BETA 3.lOE-02 l.68E-03 l.13E-03 AP ONS-5 406606009 9/21/2016 BETA 3.69E-02 l.82E-03 l.lOE-03 AP ONS-6 406606010 9/21/2016 BETA 3.39E-02 l.79E-03 l.16E-03 AP NBF 407112001 9/28/2016 BETA 3.85E-02 l.93E-03 l.24E-03 AP SBN 407112002 9/28/2016 BETA 4.57E-02 2.05E-03 1.18E-03 AP DOW 407112003 9/28/2016 BETA 3.91E-02 l.93E-03 l.22E-03 AP COL 407112004 9/28/2016 BETA 3.53E-02 l.78E-03 1.15E-03 AP ONS-1 407112005 9/28/2016 BETA 3.64E-02 l.82E-03 l.16E-03 AP ONS-2 407112006 9/28/2016 BETA 3.42E-02 l.86E-03 l.30E-03 AP ONS-3 407112007 9/28/2016 BETA 3.77E-02 l.83E-03 1.14E-03 AP ONS-4 407112008 9/28/2016 BETA 3.79E-02 l.84E-03 1.15E-03 AP ONS-5 407112009 9/28/2016 BETA 3.55E-02 l.80E-03 1.17E-03 AP ONS-6 407112010 9/28/2016 BETA 3.59E-02 l.84E-03 l.21E-03 D-25 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP NBF 407541001 10/5/2016 BETA l.77E-02 1.32E-03 l.18E-03 AP SBN 407541002 10/5/2016 BETA l.95E-02 1.35E-03 l.15E-03 AP DOW 407541003 10/5/2016 BETA l.84E-02 l.32E-03 l.15E-03 AP COL 407541004 10/5/2016 BETA 2.16E-02 1.40E-03 l.l IE-03 AP ONS-1 407541005 10/5/2016 BETA 2.llE-02 l.38E-03 l. lOE-03 AP ONS-2 407541006 10/5/2016 BETA l.98E-02 l.34E-03 l.l lE-03 AP ONS-3 407541007 10/5/2016 BETA 2.08E-02 1.42E-03 l.18E-03 AP ONS-4 407541008 10/5/2016 BETA 2.lOE-02 l.37E-03 l.09E-03 AP ONS-5 407541009 10/5/2016 BETA 2.33E-02 l.46E-03 l.12E-03 AP ONS-6 407541010 10/5/2016 BETA l.75E-02 l.30E-03 l.17E-03 AP NBF 408223001 10/12/2016 BETA 3.27E-02 l.76E-03 l.21E-03 AP SBN 408223002 10/12/2016 BETA 4.00E-02 l.98E-03 l.26E-03 AP DOW 408223003 10/12/2016 BETA 3.20E-02 l.75E-03 l.23E-03 AP COL 408223004 10/12/2016 BETA 3.21E-02 l.70E-03 l.15E-03 AP ONS-1 408223005 10/12/2016 BETA 3.45E-02 l.75E-03 1.14E-03 AP ONS-2 408223006 10/12/2016 BETA 3.62E-02 l.80E-03 l.15E-03 AP ONS-3 408223007 10/12/2016 BETA 3.54E-02 l.77E-03 1.14E-03 AP ONS-4 408223008 10/12/2016 BETA 3.16E-02 l.66E-03 l.12E-03 AP ONS-5 408223009 10/12/2016 BETA 3.81E-02 l.83E-03 l.13E-03 AP ONS-6 408223010 10/12/2016 BETA 3.22E-02 l.69E-03 l.14E-03 AP NBF 408923001 10/19/2016 BETA 2.84E-02 l.60E-03 l.l IE-03 AP SBN 408923002 10/19/2016 BETA 2.79E-02 l.63E-03 l.l 7E-03 AP DOW 408923003 10/19/2016 BETA 2.0IE-02 l.40E-03 l.18E-03 AP COL 408923004 10/19/2016 BETA 1.86E-02 1.33E-03 l.16E-03 AP ONS-1 408923005 10/19/2016 BETA 2.09E-02 1.35E-03 l.08E-03 AP ONS-2 408923006 10/19/2016 BETA 2.19E-02 l.43E-03 l.14E-03 AP ONS-4 408923008 10/19/2016 BETA l.91E-02 l.30E-03 l.08E-03 AP ONS-5 408923009 10/19/2016 BETA 2.06E-02 l.34E-03 l.07E-03 AP**' ONS-6 408923010 10/19/2016 BETA 2.37E-02 l.49E-03 l.14E-03 AP NBF 409381001 10/26/2016 BETA 2.llE-02 1.39E-03 1.20E-03 AP SBN 409381002 10/26/2016 BETA 2.26E-02 1.47E-03 l.24E-03 AP DOW 409381003 10/26/2016 BETA l.90E-02 l.36E-03 1.25E-03 AP COL 409381004 10/26/2016 BETA l.79E-02 l.29E-03 l.21E-03 AP ONS-1 409381005 10/26/2016 BETA 2.0IE-02 l.37E-03 l.21E-03 AP ONS-2 409381006 10/26/2016 BETA 2.50E-02 l.53E-03 1.22E-03 AP ONS-3 409381007 10/26/2016 BETA l.70E-02 1.31E-03 1.30E-03 AP ONS-4 409381008 10/26/2016 BETA l.SOE-02 1.32E-03 1.24E-03 AP ONS-5 409381009 10/26/2016 BETA 2.17E-02 1.36E-03 l.llE-03 AP ONS-6 409381010 10/26/2016 BETA l.93E-02 1.35E-03 1.22E-03 AP NBF 409934001 11/2/2016 BETA 3.llE-02 l.69E-03 l.17E-03 AP SBN 409934002 11/2/2016 BETA 3.0SE-02 1. 71E-03 l.22E-03 AP DOW 409934003 11/2/2016 BETA 2.74E-02 l.63E-03 l.24E-03 AP COL 409934004 11/2/2016 BETA 2.50E-02 l.59E-03 l.28E-03 AP ONS-1 409934005 11/2/2016 BETA 2.98E-02 l.64E-03 1.16E-03 AP ONS-2 409934006 11/2/2016 BETA 2.87E-02 l.70E-03 l.29E-03 AP ONS-3 409934007 11/2/2016 BETA 2.92E-02 l.71E-03 1.27E-03 AP ONS-4 409934008 11/2/2016 BETA 2.87E-02 l.65E-03 l.21E-03 AP ONS-5 409934009 11/2/2016 BETA 3.62E-02 1.90E-03 l.28E-03 AP ONS-6 409934010 11/2/2016 BETA 3.27E-02 l.78E-03 1.23E-03 AP NBF 410456001 11/9/2016 BETA 4.14E-02 l.94E-03 1.22E-03 0-26 Donald C. Cook Nuclear Piant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP SBN 410456002 11/9/2016 BETA 4.30E-02 2.00E-03 l.24E-03 AP DOW 410456003 11/9/2016 BETA 3.69E-02 l.86E-03 l.26E-03 AP COL 410456004 11/9/2016 BETA 3.68E-02 l.85E-03 1.25E-03 AP ONS-1 410456005 1119/2016 BETA 4.04E-02 l.90E-03 1.20E-03 AP ONS-2 410456006 11/9/2016 BETA 4.26E-02 2.02E-03 1.28E-03 AP ONS-3 410456007 1119/2016 BETA 4.25E-02 1.95E-03 1.20E-03 AP ONS-4 410456008 11/9/2016 BETA 3.86E-02 1.91E-03 l.26E-03 AP ONS-5 410456009 11/9/2016 BETA 4.40E-02 l.98E-03 1.19E-03 AP ONS-6 410456010 11/9/2016 BETA 3.80E-02 l.89E-03 1.25E-03 AP NBF 411037001 11/16/2016 BETA 3.36E-02 1.79E-03 1.20E-03 AP SBN 411037002 11116/2016 BETA 3.09E-02 l.72E-03 1.21E-03 AP DOW 411037003 11116/2016 BETA 2.89E-02 l.67E-03 1.21E-03 AP COL 411037004 11116/2016 BETA 3.07E-02 l.67E-03 1.15E-03 AP ONS-1 411037005 11116/2016 BETA 4.00E-02 1.91E-03 1.15E-03 AP ONS-2 411037006 11116/2016 BETA 3.55E-02 1.83E-03 1.19E-03 AP ONS-3 411037007 11116/2016 BETA 3.58E-02 1.80E-03 1.14E-03 AP ONS-4 411037008 11/16/2016 BETA 3.58E-02 1.84E-03 1.19E-03 AP ONS-5 411037009 11/16/2016 BETA 3.86E-02 1.88E-03 1.15E-03 AP ONS-6 411037010 11/16/2016 BETA 3.43E-02 1.79E-03 1.17E-03 AP NBF 414244001 12/28/2016 Ac-228 -6.81E-05 4.05E-04 l.32E-03 u AP NBF 414244001 12/28/2016 Ag-108m 2.57E-05 5.70E-05 1.95E-04 u AP NBF 414244001 12/28/2016 Ag-llOm l.lOE-04 l.l lE-04 3.94E-04 u AP NBF 414244001 12/28/2016 Ba-140 7.lOE-03 6.57E-03 2.31E-02 u AP NBF 414244001 12/28/2016 Be-7 1.0lE-01 5.97E-03 4.51E-03 AP NBF 414244001 12/28/2016 Ce-141 4.49E-04 2.88E-04 9.83E-04 u AP NBF 414244001 12/28/2016 Ce-144 -l.37E-04 3.78E-04 1.28E-03 u AP NBF 414244001 12/28/2016 Co-57 1.04E-04 5.52E-05 1.85E-04 u AP NBF 414244001 12/28/2016 Co-58 6.71E-05 1.43E-04 4.82E-04 u AP NBF 414244001 12/28/2016 Co-60 -7.47E-05 8.97E-05 2.63E-04 u AP NBF 414244001 12/28/2016 Cr-51 -1.lOE-03 2.31E-03 7.46E-03 u AP NBF 414244001 12/28/2016 Cs-134 3.22E-05 7.91E-05 2.68E-04 u AP NBF 414244001 12/28/2016 Cs-137 -3.15E-05 9.18E-05 2.89E-04 u AP NBF 414244001 12/28/2016 Fe-59 6.0lE-04 5.78E-04 1.lOE-03 u AP NBF 414244001 12/28/2016 I-131 -2.75E-02 1.41E-02 3.49E-02 u AP NBF 414244001 12/28/2016 K-40 -8.69E-04 l.29E-03 4.15E-03 u AP NBF 414244001 12/28/2016 La-140 -4.18E-03 3.76E-03 1.05E-02 u AP NBF 414244001 12/28/2016 Mn-54 -1.56E-05 9.79E-05 3.lOE-04 u AP NBF 414244001 12/28/2016 Nb-95 1.66E-04 1.56E-04 5.05E-04 u AP NBF 414244001 12/28/2016 Ru-103 1.20E-04 2.19E-04 7.44E-04 u AP NBF 414244001 12/28/2016 Ru-106 9.75E-04 7.36E-04 2.59E-03 u AP NBF 414244001 12/28/2016 Sb-124 l.09E-04 4.59E-04 1.58E-03 u AP NBF 414244001 12/28/2016 Sb-125 1.81E-04 2.07E-04 7.14E-04 u AP NBF 414244001 12/28/2016 Se-75 2.27E-04 l.38E-04 4.62E-04 u AP NBF 414244001 12/28/2016 Th-228 -1.17E-04 1.58E-04 4.70E-04 u AP NBF 414244001 12/28/2016 Zn-65 -3.36E-04 1.76E-04 2.49E-04 u AP NBF 414244001 12/28/2016 Zr-95 -l.23E-04 2.47E-04 7.47E-04 u AP SBN 414244002 12/28/2016 Ac-228 4.82E-04 4.54E-04 l.54E-03 u AP SBN 414244002 12/28/2016 Ag-108m 2.59E-05 7.41E-05 2.46E-04 u AP SBN 414244002 12/28/2016 Ag-llOm 2.19E-04 l.17E-04 4.llE-04 u AP SBN 414244002 12/28/2016 Ba-140 8.90E-03 8.66E-03 2.91E-02 u D-27 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP SBN 414244002 12/28/2016 Be-7 9.40E-02 5.49E-03 3.98E-03 AP SBN 414244002 12/28/2016 Ce-141 5.16E-04 7.05E-04 1.15E-03 u AP SBN 414244002 12/28/2016 Ce-144 5.llE-04 4.26E-04 l.36E-03 u AP SBN 414244002 12/28/2016 Co-57 -l.42E-04 7.15E-05 l.80E-04 u AP SBN 414244002 12/28/2016 Co-58 l.33E-04 l.79E-04 5.64E-04 u AP SBN 414244002 12/28/2016 Co-60 l.05E-05 l.09E-04 3.55E-04 u AP SBN 414244002 12/28/2016 Cr-51 -8.68E-04 2.61E-03 8.48E-03 u AP SBN 414244002 12/28/2016 Cs-134 -2.55E-04 l.27E-04 2.61E-04 u AP SBN 414244002 12/28/2016 Cs-137 4.17E-04 l.12E-04 2.78E-04 ur AP SBN 414244002 12/28/2016 Fe-59 2.72E-04 3.83E-04 l.34E-03 u AP SBN 414244002 12/28/2016 I-131 -l.39E-03 l.72E-02 5.63E-02 u AP SBN 414244002 12/28/2016 K-40 -2.82E-03 l.72E-03 5.30E-03 u AP SBN 414244002 12/28/2016 La-140 -3.25E-03 3.21E-03 9.04E-03 u AP SBN 414244002 12/28/2016 Mn-54 -2.69E-05 l.05E-04 2.98E-04 u AP SBN 414244002 12/28/2016 Nb-95 3.44E-04 2.37E-04 4.75E-04 u AP SBN 414244002 12/28/2016 Ru-103 -5.35E-05 2.33E-04 7.40E-04 u AP SBN 414244002 12/28/2016 Ru-106 3.40E-04 9.07E-04 2.96E-03 u AP SBN 414244002 12/28/2016 Sb-124 5.39E-04 4.79E-04 l.76E-03 u AP SBN 414244002 12/28/2016 Sb-125 4.09E-05 2.12E-04 7.00E-04 u AP SBN 414244002 12/28/2016 Se-75 3.24E-05 l.26E-04 4.28E-04 u AP SBN 414244002 12/28/2016 Th-228 2.91E-04 2.29E-04 4.26E-04 u AP SBN 414244002 12/28/2016 Zn-65 -l.20E-05 2.36E-04 6.71E-04 u AP SBN 414244002 12/28/2016 Zr-95 -l.20E-04 2.78E-04 8.99E-04 u AP DOW 414244003 12/28/2016 Ac-228 -2.79E-04 3.33E-04 9.85E-04 u AP DOW 414244003 12/28/2016 Ag-108m -2.08E-05 5.31E-05 l.71E-04 u AP DOW 414244003 12/28/2016 Ag-llOm -l.02E-Q4 l.05E-04 3.09E-04 u AP DOW 414244003 12/28/2016 Ba-140 -l.59E-03 5.74E-03 l.83E-02 u AP DOW 414244003 12/28/2016 Be-7 9.46E-02 6.56E-03 4.37E-03 AP DOW 414244003 12/28/2016 Ce-141 -1.44E-04 2.86E-04 8.87E-04 u AP DOW 414244003 12/28/2016 Ce-144 l.65E-04 3.70E-04 l.21E-03 u AP DOW 414244003 12/28/2016 Co--57 -9.21E-06 4.52E-05 l.44E-04 u AP DOW 414244003 12/28/2016 Co-58 l.72E-04 l.23E-04 4.43E-04 u AP DOW 414244003 12/28/2016 Co-60 -8.60E-05 7.53E-05 l.88E-04 u AP DOW 414244003 12/28/2016 Cr-51 3.18E-04 2.llE-03 7.18E-03 u AP DOW 414244003 12/28/2016 Cs-134 5.03E-05 7.l lE-05 2.34E-04 u AP DOW 414244003 12/28/2016 Cs-137 -l.26E-04 9.16E-05 2.31E-04 u AP DOW 414244003 12/28/2016 Fe-59 -4.64E-05 3.72E-04 l.22E-03 u AP DOW 414244003 12/28/2016 I-131 5.25E-03 l.12E-02 3.84E-02 u AP DOW 414244003 12/28/2016 K-40 2.62E-03 l.56E-03 3.28E-03 u AP DOW 414244003 12/28/2016 La-140 -l.90E-03 3.06E-03 8.85E-03 u AP DOW 414244003 12/28/2016 Mn-54 4.70E-05 7.94E-05 2.80E-04 u AP DOW 414244003 12/28/2016 Nb-95 l.59E-04 l.52E-04 4.79E-04 u AP DOW 414244003 12/28/2016 Ru-103 2.50E-05 2.00E-04 5.95E-04 u AP DOW 414244003 12/28/2016 Ru-106 l.21E-04 5.93E-04 l.95E-03 u AP DOW 414244003 12/28/2016 Sb-124 l.16E-04 3.22E-04 l.lOE-03 u AP DOW 414244003 12/28/2016 Sb-125 -7.30E-05 l.43E-04*

4.50E-04 u AP DOW 414244003 12/28/2016 Se-75 4.07E-05 l.04E-04 3.62E-04 u AP DOW 414244003 12/28/2016 Th-228 1.80E-04 l.95E-04 4.26E-04 u AP DOW 414244003 12/28/2016 Zn-65 -4.BE-05 l.80E-04 5.59E-04 u AP DOW 414244003 12/28/2016 Zr-95 6.02E-05 2.15E-04 6.36E-04 u D-28 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3} (pCi/m3) (pCi/m3) AP COL 414244004 12/28/2016 Ac-228 2.54E-04 3.83E-04 l.20E-03 u AP COL 414244004 12/28/2016 Ag-108m -8.19E-05 5.56E-05 l.54E-04 u AP COL 414244004 12/28/2016 Ag-llOm 2.77E-04 l.62E-04 3.75E-04 u AP COL 414244004 12/28/2016 Ba-140 9.02E-03 6.70E-03 2.27E-02 u AP COL 414244004 12/28/2016 Be-7 9.69E-02 5.96E-03 2.93E-03 AP COL 414244004 12/28/2016 Ce-141 -4.18E-04 3.19E-04 8.34E-04 u AP COL 414244004 12/28/2016 Ce-144 -4.66E-04 3.57E-04 1.0lE-03 u AP COL 414244004 12/28/2016 Co-57 -3.59E-05 4.60E-05 1.27E-04 u AP COL 414244004 12/28/2016 Co-58 9.20E-06 9.25E-05 3.17E-04 u AP COL 414244004 12/28/2016 Co-60 -5.60E-05 6.64E-05 l.83E-04 u AP COL 414244004 12/28/2016 Cr-51 J.45E-04 l.99E-03 6.74E-03 u AP COL 414244004 12/28/2016 Cs-134 -7.55E-05 8.20E-05 2.29E-04 u AP COL 414244004 12/28/2016 Cs-137 7.06E-05 6.51E-05 2.22E-04 u AP COL 414244004 12/28/2016 Fe-59 4.88E-04 3.40E-04 1.23E-03 u AP COL 414244004 12/28/2016 I-131 -7.52E-03 9.65E-03 3.00E-02 u AP COL 414244004 12/28/2016 K-40 l.81E-03 l.39E-03 2.03E-03 u AP COL 414244004 12/28/2016 La-140 2.72E-03 2.02E-03 7.62E-03 u AP COL 414244004 12/28/2016 Mn-54 -2.64E-05 5.65E-05 l.81E-04 u AP COL 414244004 12/28/2016 Nb-95 -l.82E-04 l.34E-04 3.46E-04 u AP COL 414244004 12/28/2016 Ru-103 2.49E-04 l.65E-04 5.63E-04 u AP COL 414244004 12/28/2016 Ru-106 -4.68E-04 7.25E-04 l.91E-03 u AP COL 414244004 12/28/2016 Sb-124 5.00E-04 4.12E-04 1.47E-03 u AP COL 414244004 12/28/2016 Sb-125 3.14E-04 l.70E-04 5.76E-04 u AP COL 414244004 12/28/2016 Se-75 5.88E-05 l.02E-04 3.51E-04 u AP COL 414244004 12/28/2016 Th-228 l.21E-04 1.59E-04 3.82E-04 u AP COL 414244004 12/28/2016 Zn-65 l.88E-04 2.00E-04 7.03E-04 u AP COL 414244004 12/28/2016 Zr-95 l.72E-04 2.06E-04 6.97E-04 u AP ONS-1 414244005 12/28/2016 Ac-228 8.08E-04 5.07E-04 l.19E-03 u AP ONS-1 414244005 12/28/2016 Ag-108m -l.48E-05 5.IOE-05 1.64E-04 u AP ONS-1 414244005 12/28/2016 Ag-llOm l.05E-04 l.13E-04 3.89E-04 u AP ONS-1 414244005 12/28/2016 Ba-140 2.29E-03 5.43E-03 l.84E-02 u AP ONS-1 414244005 12/28/2016 Be-7 9.75E-02 6.19E-03 3.64E-03 AP ONS-1 414244005 12/28/2016 Ce-141 -4.lOE-04 3.25E-04 9.llE-04 u AP ONS-1 414244005 12/28/2016 Ce-144 -l.62E-04 3.92E-04 1.18E-03 u AP ONS-1 414244005 12/28/2016 Co-57 8.28E-06 4.78E-05 l.39E-04 u AP ONS-1 414244005 12/28/2016 Co-58 -2.18E-04 l.41E-04 3.40E-04 u AP ONS-1 414244005 12/28/2016 Co-60 9.76E-05 8.12E-05 3.0lE-04 u AP ONS-1 414244005 12/28/2016 Cr-51 -1.18E-03 2.23E-03 7.18E-03 u AP ONS-1 414244005 12/28/2016 Cs-134 6.17E-05 6.98E-05 2.43E-04 u AP ONS-1 414244005 12/28/2016 Cs-137 -5.51E-05 6.72E-05 l.93E-04 u AP ONS-1 414244005 12/28/2016 Fe-59 -1.33E-04 2.28E-04 6.77E-04 u AP ONS-1 414244005 12/28/2016 I-131 -2.36E-02 l.40E-02 3.79E-02 u AP ONS-1 414244005 12/28/2016 K-40 3.47E-03 1.25E-03 l.47E-03 UI AP ONS-1 414244005 12/28/2016 La-140 9.46E-04 2.09E-03 7.40E-03 u AP ONS-1 414244005 12/28/2016 Mn-54 1.64E-05 8.23E-05 2.67E-04 u AP ONS-1 414244005 12/28/2016 Nb-95 2.14E-04 l.42E-04 4.90E-04 u AP ONS-1 414244005 12/28/2016 Ru-103 6.23E-05 l.60E-04 5.38E-04 u AP ONS-1 414244005 12/28/2016 Ru-106 3.85E-05 6.60E-04 2.15E-03 u AP ONS-1 414244005 12/28/2016 Sb-124 8.79E-05 3.03E-04 1.04E-03 u AP ONS-1 414244005 12/28/2016 Sb-125 2.02E-04 1.90E-04 6.52E-04 u D-29 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. l\IDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/1113) (pCi/1113) (pCi/m3) AP ONS-1 414244005 12/28/2016 Se-75 l.35E-04 l.20E-04 4.09E-04 u AP ONS-1 414244005 12/28/2016 Th-228 2.33E-04 2.00E-04 4.54E-04 u AP ONS-1 414244005 12/28/2016 Zn-65 -5.llE-05 l.57E-04 5.04E-04 u AP ONS-1 414244005 12/28/2016 Zr-95 -l.14E-04 2.03E-04 5.98E-04 u AP ONS-2 414244006 12/28/2016 Ac-228 -7.0lE-04 6.07E-04 l.65E-03 u AP ONS-2 414244006 12/28/2016 Ag-108m -3.83E-05 l.02E-04 3.30E-04 u AP ONS-2 414244006 12/28/2016 Ag-llOm 6.07E-05 l.91E-04 6.60E-04 u AP ONS-2 414244006 12/28/2016 Ba-140 -3. llE-03 9.94E-03 3.15E-02 u AP ONS-2 414244006 12/28/2016 Be-7 l.07E-01 9.91E-03 6.lOE-03 AP ONS-2 414244006 12/28/2016 Ce-141 5.19E-05 4.75E-04 l.59E-03 u AP ONS-2 414244006 12/28/2016 Ce-144 -6.00E-05 5.33E-04 l.62E-03 u AP ONS-2 414244006 12/28/2016 Co-57 -l.12E-04 8.52E-05 2.44E-04 u AP ONS-2 414244006 12/28/2016 Co-58 l.25E-04 2.43E-04 8.55E-04 u AP ONS-2 414244006 12/28/2016 Co-60 -6.99E-05 l.34E-04 3.73E-04 u AP ONS-2 414244006 12/28/2016 Cr-51 l.27E-03 3.83E-03 l.25E-02 u AP ONS-2 414244006 12/28/2016 Cs-134 -2.68E-06 8.16E-05 2.63E-04 u AP ONS-2 414244006 12/28/2016 Cs-137 2.19E-04 l.66E-04 6.14E-04 u AP ONS-2 414244006 12/28/2016 Fe-59 6.67E-04 7.16E-04 2.77E-03 u AP ONS-2 414244006 12/28/2016 1-131 2.03E-02 l.82E-02 6.49E-02 u AP ONS-2 414244006 12/28/2016 K-40 -l.63E-03 l.85E-03 6.78E-03 u AP ONS-2 414244006 12/28/2016 La-140 2.77E-03 4.85E-03 l.83E-02 u AP ONS-2 414244006 12/28/2016 Mn-54 l.llE-04 l.63E-04 5.84E-04 u AP ONS-2 414244006 12/28/2016 Nb-95 1.59E-04 2.09E-04 7.95E-04 u AP ONS-2 414244006 12/28/2016 Ru-103 -l.llE-04 2.97E-04 9.47E-04 u AP ONS-2 414244006 12/28/2016 Ru-106 -7.02E-04 l.35E-03 4.12E-03 u AP ONS-2 414244006 12/28/2016 Sb-124 8.35E-04 6.22E-04 2.75E-03 u AP ONS-2 414244006 12/28/2016 Sb-125 -5.48E-04 3.38E-04 8.25E-04 u AP ONS-2 414244006 12/28/2016 Se-75 -l.68E-04 l.93E-04 5.42E-04 u AP ONS-2 414244006 12/28/2016 Th-228 l.43E-04 3.09E-04 5.68E-04 u AP ONS-2 414244006 12/28/2016 Zn-65 -l.17E-04 2.47E-04 7.15E-04 u AP ONS-2 414244006 12/28/2016 Zr-95 2.16E-04 3.69E-04 l.34E-03 u AP ONS-3 414244007 12/28/2016 Ac-228 2.71E-05 4.89E-04 l.1 IE-03 u AP ONS-3 414244007 12/28/2016 Ag-108m 2.20E-05 6.63E-05 2.24E-04 u AP ONS-3 414244007 12/28/2016 Ag-llOm 5.llE-05 l.22E-04 4.05E-04 u AP ONS-3 414244007 12/28/2016 Ba-140 l.90E-03 6.59E-03 2.2IE-02 u AP ONS-3 414244007 12/28/2016 Be-7 1.IOE-01 7.27E-03 3.64E-03 AP ONS-3 414244007 12/28/2016 Ce-141 -2.33E-04 3.09E-04 8.71E-04 u AP ONS-3 414244007 12/28/2016 Ce-144 2.17E-04 3.98E-04 l.28E-03 u AP ONS-3 414244007 12/28/2016 Co-57 3.73E-06 4.90E-05 l.55E-04 u AP ONS-3 414244007 12/28/2016 Co-58 1.15E-05 l.36E-04 3.92E-04 u AP ONS-3 414244007 12/28/2016 Co-60 -6.33E-05 7.40E-05 2.03E-04 u AP ONS-3 414244007 12/28/2016 Cr-51 3.00E-03 2.45E-03 8.48E-03 u* AP ONS-3 414244007 12/28/2016 Cs-134 -4.13E-05 8.74E-05 2.62E-04 u AP ONS-3 414244007 12/28/2016 Cs-137 -7.64E-05 7.72E-05 2.15E-04 u AP ONS-3 414244007 12/28/2016 Fe-59 -2.88E-04 3.60E-04 l.06E-03 u AP ONS-3 414244007 12/28/2016 1-131 -3.46E-03 l.29E-02 4.24E-02 u AP ONS-3 414244007 12/28/2016 K-40 -3.77E-04 l.05E-03 3.76E-03 u AP ONS-3 414244007 12/28/2016 La-140 l.98E-03 l.91E-03 7.52E-03 u AP ONS-3 414244007 12/28/2016 Mn-54 -6.16E-06 8.91E-05 2.82E-04 u AP ONS-3 414244007 12/28/2016 Nb-95 l.85E-04 l.49E-04 5.18E-04 u 0-30 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) AP ONS-3 414244007 12/28/2016 Ru-103 -l.68E-04 2.17E-04 5.72£-04 u AP ONS-3 414244007 12/28/2016 Ru-106 9.97E-04 7.30E-04 2.55E-03 u AP ONS-3 414244007 12/28/2016 Sb-124 2.15E-04 3.26E-04 1.20E-03 u AP ONS-3 414244007 12/28/2016 Sb-125 4.53E-05 1.97E-04 6.63£-04 u AP ONS-3 414244007 12/28/2016 Se-75 l.20E-04 1.19E-04 4.13£-04 u AP ONS-3 414244007 12/28/2016 Th-228 2.51£-04 2.05E-04 4.19£-04 u AP ONS-3 414244007 12/28/2016 Zn-65 -1.91£-04 2.04E-04 6.00E-04 u AP ONS-3 414244007 12/28/2016 Zr-95 -4.08£-05 I.87E-04 5.78£-04 u AP ONS-4 414244008 12/28/2016 Ac-228 3.78£-04 4.llE-04 1.33£-03 u AP ONS-4 414244008 12/28/2016 Ag-108111 8.75E-05 6.30E-05 l.99E-04 u AP ONS-4 414244008 12/28/2016 Ag-110111 2.36E-05 1.19E-04 3.95E-04 u AP ONS-4 414244008 12/28/2016 Ba-140 7.76£-03 8.83£-03 2.25E-02 u AP ONS-4 414244008 12/28/2016 Be-7 1.03£-01 5.24E-03 3.36£-03 AP ONS-4 414244008 12/28/2016 Ce-141 -2.05E-04 2.42E-04 7.81£-04 u AP ONS-4 414244008 12/28/2016 Ce-144 2.21£-04 2.98E-04 1.05E-03 u AP ONS-4 414244008 12/28/2016 Co-57 -3.74E-05 3.98E-05 1.13E-04 u AP ONS-4 414244008 12/28/2016 Co-58 l.58E-04 I.23E-04 4.42E-04 u AP ONS-4 414244008 12/28/2016 Co-60 -2.92E-06 8.93E-05 2.97E-04 u AP ONS-4 414244008 12/28/2016 Cr-51 -2.19E-03 2.45E-03 7.40E-03 u AP ONS-4 414244008 12/28/2016 Cs-134 -l.33E-04 8.06E-05 l.88E-04 u AP ONS-4 414244008 12/28/2016 Cs-137 1.36E-04 6.86E-05 2.48E-04 u AP ONS-4 414244008 12/28/2016 Fe-59 9.61£-06 3.55E-04 1.14E-03 u AP ONS-4 414244008 12/28/2016 I-131 -1.63E-02 l.52E-02 3.83E-02 u AP ONS-4 414244008 12/28/2016 K-40 -4.69E-04 l.30E-03 4.26E-03 u AP ONS-4 414244008 12/28/2016 La-140 2.15E-03 2.47E-03 9.09E-03 u AP ONS-4 414244008 12/28/2016 Mn-54 -7.20E-06 7.53E-05 2.45E-04 u AP ONS-4 414244008 12/28/2016 Nb-95 7.60E-05 I.47E-04 5.04E-04 u AP ONS-4 414244008 12/28/2016 Ru-103 -2.40E-04 1.88E-04 4.93E-04 u AP ONS-4 414244008 12/28/2016 Ru-106 -4.33E-04 5.97E-04 1.83E-03 u AP ONS-4 414244008 12/28/2016 Sb-124 -5.46E-05 4.73E-04 1.52E-03 u AP ONS-4 414244008 12/28/2016 Sb-125 -6.82E-05 I.80E-04 5.55£-04 u AP ONS-4 414244008 12/28/2016 Se-75 2.35E-05 1.15E-04 3.83E-04 u AP ONS-4 414244008 12/28/2016 Th-228 l.47E-04 l.53E-04 4.12E-04 u AP ONS-4 414244008 12/28/2016 Zn-65 -2.31E-04 l.89E-04 4.67E-04 u AP ONS-4 414244008 12/28/2016 Zr-95 -2.29E-04 2.25E-04 6.35E-04 u AP ONS-5 414244009 12/28/2016 Ac-228 -5.13E-04 4.03E-04 1.12E-03 u AP ONS-5 414244009 12/28/2016 Ag-108111 3.43E-05 6.38E-05 2.18E-04 u AP ONS-5 414244009 12/28/2016 Ag-110111 5.76E-05 l.08E-04 3.70E-04 u AP ONS-5 414244009 12/28/2016 Ba-140 3.12E-03 6.llE-03 2.IOE-02 u AP ONS-5 414244009 12/28/2016 Be-7 1.05E-01 5.73E-03 3.79E-03 AP ONS-5 414244009 12/28/2016 Ce-141 5.38E-05 5.51E-04 9.16E-04 u AP ONS-5 414244009 12/28/2016 Ce-144 -6.30E-05 3.38E-04 1.15E-03 u AP ONS-5 414244009 12/28/2016 Co-57 l.47E-05 4.45E-05 1.55E-04 u AP ONS-5 414244009 12/28/2016 Co-58 5.81E-05 1.45E-04 4.87E-04 u AP ONS-5 414244009 12/28/2016 Co-60 -5.14E-05 7.78E-05 2.34E-04 u AP ONS-5 414244009 12/28/2016 Cr-51 -2.31E-03 2.61£-03 8.15E-03 u AP ONS-5 414244009 12/28/2016 Cs-134 7.55E-05 I.05E-04 2.80E-04 u AP ONS-5 414244009 12/28/2016 Cs-137 1.34E-04 8.21E-05 2.89E-04 u AP ONS-5 414244009 12/28/2016 Fe-59 -3.97E-04 4.04E-04 l.06E-03 u AP ONS-5 414244009 12/28/2016 I-131 -2.17E-02 I.42E-02 3.93£-02 u 0-31 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/1113) (pCi/1113) (pCi/m3) AP ONS-5 414244009 12/28/2016 K-40 -6.64E-04 l.36E-03 4.46E-03 u AP ONS-5 414244009 12/28/2016 La-140 -3.53E-03 2.65E-03 6.25E-03 u AP ONS-5 414244009 12/28/2016 Mn-54 -l.21E-04 9.39E-05 2.43E-04 u AP ONS-5 414244009 12/28/2016 Nb-95 2.17E-04 1.44E-04 4.72E-04 u AP ONS-5 414244009 12/28/2016 Ru-103 -I.68E-05 I.76E-04 5.75E-04 u AP ONS-5 414244009 12/28/2016 Ru-106 -2.8IE-04 7.33E-04 2.30E-03 u AP ONS-5 414244009 12/28/2016 Sb-124 -l.04E-04 3.35E-04 l.05E-03 u AP ONS-5 414244009 12/28/2016 Sb-125 2.16E-04 5.92E-04 u AP ONS-5 414244009 12/28/2016 Se-75 4.89E-05 l.35E-04 4.16E-04 u AP ONS-5 414244009 12/28/2016 Th-228 3.43E-04 2.20E-04 4.99E-04 u AP ONS-5 414244009 12/28/2016 Zn-65 2.18E-05 2.02E-04 6.50E-04 u AP ONS-5 414244009 12/28/2016 Zr-95 2.00E-04 2.30E-04 8.04E-04 u AP ONS-6 414244010 12/28/2016 Ac-228 5.97E-04 6.6IE-04 l.58E-03 u AP ONS-6 414244010 12/28/2016 Ag-108m l.83E-04 8.27E-05 2.68E-04 u AP ONS-6 414244010 12/28/2016 Ag-llOm LOIE-04 1.24E-04 4.37E-04 u AP ONS-6 414244010 12/28/2016 Ba-140 2.38E-03 8.14E-03 2.67E-02 u AP ONS-6 414244010 12/28/2016 Be-7 l.02E-01 5.38E-03 5.02E-03 AP ONS-6 414244010 12/28/2016 Ce-141 -3.44E-04 3.53E-04 LOiE-03 u AP ONS-6 414244010 12/28/2016 Ce-144 1.29E-04 4.3IE-04 1.37E-03 u AP ONS-6 414244010 12/28/2016 Co-57 -6.34E-06 5.66E-05 l.77E-04 u AP ONS-6 414244010 12/28/2016 Co-58 -l.60E-06 1.55E-04 5.20E-04 u AP ONS-6 414244010 12/28/2016 Co-60 6.30E-05 9.51E-05 3.29E-04 u AP ONS-6 414244010 12/28/2016 Cr-51 -5.14E-04 2.82E-03 9.26E-03 u AP ONS-6 414244010 12/28/2016 Cs-134 -l.40E-04 l.06E-04 2.51E-04 u AP ONS-6 414244010 12/28/2016 Cs-137 1.38E-04 1.0IE-04 3.56E-04 u AP ONS-6 414244010 12/28/2016 Fe-59 -3.46E-04 4.48E-04 l.32E-03 u AP ONS-6 414244010 12/28/2016 I-131 l.70E-02 1.77E-02 5.96E-02 u AP ONS-6 414244010 12/28/2016 K-40 -3.87E-04 1.56E-03 5.69E-03 u AP ONS-6 414244010 12/28/2016 La-140 -5.05E-03 3.71E-03 9.86E-03 u AP ONS-6 414244010 12/28/2016 Mn-54 -5.44E-05 l.04E-04 3.31E-04 u AP ONS-6 414244010 12/28/2016 Nb-95 -2.90E-04 2.15E-04 5.lOE-04 u AP ONS-6 414244010 12/28/2016 Ru-103 3.16E-04 2.50E-04 7.15E-04 u AP ONS-6 414244010 12/28/2016 Ru-106 -6.47E-04 l.02E-03 3.05E-03 u AP ONS-6 414244010 12/28/2016 Sb-124 2.61E-04 3.84E-04 l.39E-03 u AP ONS-6 414244010 12/28/2016 Sb-125 2.68E-04 2.37E-04 8.00E-04 u AP ONS-6 414244010 12/28/2016 Se-75 2.71E-04 1.44E-04 4.72E-04 u AP ONS-6 414244010 12/28/2016 Th-228 -4.49E-05 1.45E-04 4.34E-04 u AP ONS-6 414244010 12/28/2016 Zn-65 l.52E-04 2.49E-04 7.68E-04 u AP ONS-6 414244010 12/28/2016 Zr-95 -2.63E-04 2.94E-04 8.96E-04 u AP NBF 411429001 11/23/2016 BETA 4.34E-02 1.99E-03 l.14E-03 AP SBN 411429002 11/23/2016 BETA 4.57E-02 2.06E-03 l.17E-03 AP DOW 411429003 11/23/2016 BETA 4.06E-02 1.93E-03 l.16E-03 AP COL 411429004 11/23/2016 BETA 4.25E-02 1.96E-03 l.14E-03 AP ONS-1 411429005 11/23/2016 BETA 4.21E-02 l.98E-03 l.17E-03 AP ONS-2 411429006 11/23/2016 BETA 4.62E-02 2.05E-03 l.14E-03 AP ONS-3 411429007 11/23/2016 BETA 4.0lE-02 l.91E-03 l.15E-03 AP ONS-4 411429008 11/23/2016 BETA 4.27E-02 l.99E-03 1.l 7E-03 AP ONS-5 411429009 11/23/2016 BETA 4.06E-02 l.92E-03 l.14E-03 AP ONS-6 411429010 11/23/2016 BETA 3.98E-02 1.91E-03 1.16E-03 AP NBF 411698001 11/30/2016 BETA 4.17E-02 l.97E-03 l.15E-03 D-32 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP SBN 411698002 11/30/2016 BETA 4.lOE-02 l.97E-03 1.18E-03 AP DOW 411698003 11/30/2016 BETA 3.84E-02 l.89E-03 l.16E-03 AP COL 411698004 11/30/2016 BETA 4.lOE-02 1.94E-03 1.14E-03 AP ONS-1 411698005 11/30/2016 BETA 4.12E-02 l.97E-03 1.17E-03 AP ONS-2 411698006 11/30/2016 BETA 4.23E-02 2.02E-03 l.20E-03 AP ONS-3 411698007 11/30/2016 BETA 3.79E-02 1.85E-03 1.12E-03 AP ONS-4 411698008 11/30/2016 BETA 3.51E-02 l.83E-03 l.18E-03 AP ONS-5 411698009 11/30/2016 BETA 4.06E-02 l.95E-03 l.17E-03 AP ONS-6 411698010 11/30/2016 BETA 4.42E-02 2.03E-03 1.15E-03 AP NBF 412404001 1217/2016 BETA 2.24E-02 l.47E-03 l.26E-03 AP SBN 412404002 1217/2016 BETA 2.14E-02 l.42E-03 l.23E-03 AP DOW 412404003 1217/2016 BETA 2.09E-02 l.39E-03 l.20E-03 AP COL 412404004 1217/2016 BETA l.91E-02 l.32E-03 l.18E-03 AP ONS-1 412404005 1217/2016 BETA 1.97E-02 l.34E-03 1.19E-03 AP ONS-2 412404006 1217/2016 BETA l.80E-02 1.32E-03 1.24E-03 AP ONS-3 412404007 1217/2016 BETA 2.12E-02 1.39E-03 1.18E-03 AP ONS-4 412404008 1217/2016 BETA l.80E-02 l.3 IE-03 l.23E-03 AP ONS-5 412404009 1217/2016 BETA l.94E-02 1.33E-03 1.19E-03 AP ONS-6 412404010 1217/2016 BETA 2.0lE-02 1.37E-03 l.20E-03 AP NBF 412897001 12/14/2016 BETA 3.18E-02 l.69E-03 l.17E-03 AP SBN 412897002 12/14/2016 BETA 2.83E-02 l.60E-03 l.19E-03 AP DOW 412897003 12/14/2016 BETA 3.44E-02 l.76E-03 1.19E-03 AP COL 412897004 12/14/2016 BETA 3.12E-02 l.69E-03 l.20E-03 AP ONS-1 412897005 12/14/2016 BETA 2.82E-02 l.59E-03 1.18E-03 AP ONS-2 412897006 12/14/2016 BETA 2.95E-02 l.64E-03 l.20E-03 AP ONS-3 412897007 12/14/2016 BETA 3.lOE-02 l.68E-03 l.20E-03 AP ONS-4 412897008 12/14/2016 BETA 2.78E-02 l.60E-03 l.20E-03 AP ONS-5 412897009 12/14/2016 BETA 2.66E-02 l.53E-03 1.16E-03 AP ONS-6 412897010 12/14/2016 BETA 2.64E-02 l.54E-03 l. l 7E-03 AP NBF 413336001 12/21/2016 BETA 2.73E-02 l.60E-03 l.22E-03 AP SBN 413336002 12/21/2016 BETA 3.24E-02 l.77E-03 l.27E-03 AP DOW 413336003 12/21/2016 BETA 3.04E-02 1.69E-03 l.22E-03 AP COL 413336004 12/21/2016 BETA 2.70E-02 l.57E-03 l.19E-03 AP ONS-1 413336005 12/21/2016 BETA 2.71E-02 1.55E-03 1.16E-03 AP ONS-2 413336006 12/21/2016 BETA 2.67E-02 1.54E-03 L16E-03 AP ONS-3 413336007 12/21/2016 BETA 2.70E-02 l.56E-03 1.19E-03 AP ONS-4 413336008 12/21/2016 BETA 3.llE-02 l.68E-03 1.19E-03 AP ONS-5 413336009 12/21/2016 BETA 2.71E-02 1.60E-03 1.24E-03 AP ONS-6 413336010 12/21/2016 BETA 2.58E-02 l.53E-03 1.19E-03 AP NBF 413521001 12/28/2016 BETA 3.35E-02 l.82E-03 1.30E-03 AP SBN 413521002 12/28/2016 BETA 3.14E-02 l.74E-03 l.26E-03 AP DOW 413521003 12/28/2016 BETA 3.12E-02 l.74E-03 1.27E-03 AP COL 413521004 12/28/2016 BETA 2.64E-02 l.57E-03 l.22E-03 AP ONS-1 413521005 12/28/2016 BETA 2.73E-02 l.61E-03 1.25E-03 AP ONS-2 413521006 12/28/2016 BETA 2.61E-02 1.58E-03 1.26E-03 AP ONS-3 413521007 12/28/2016 BETA 2.44E-02 l.51E-03 1.23E-03 AP ONS-4 413521008 12/28/2016 BETA 2.72E-02 l.56E-03 l.17E-03 AP ONS-5 413521009 12/28/2016 BETA 2.70E-02 l.66E-03 1.34E-03 AP ONS-6 413521010 12/28/2016 BETA 2.69E-02 l.57E-03 1.20E-03 0-33 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 388922012 1/6/2016 I-131 5.04E-03 6.25E-03 2.22E-02 u CF SBN 388922013 1/6/2016 I-131 4.85E-03 7.69E-03 2.65E-02 u CF DOW 388922014 1/6/2016 I-131 2.50E-03 2.58E-03 1.15E-02 u CF COL 388922015 1/6/2016 I-131 2.57E-03 4.58E-03 l.64E-02 u CF ONS-1 388922016 1/6/2016 I-131 5.67E-03 6.81E-03 2.46E-02 u CF ONS-2 388922017 1/6/2016 I-131 6.82E-03 7.85E-03 2.76E-02 u CF ONS-3 388922018 1/6/2016 I-131 l.48E-03 4.73E-03 l.63E-02 u CF ONS-4 388922019 1/6/2016 I-131 -8.00E-03 4.62E-03 7.40E-03 u CF ONS-5 388922020 1/6/2016 I-131 2.38E-03 4.83E-03 l.71E-02 u CF ONS-6 388922021 1/6/2016 I-131 -5.63E-03 4.05E-03 8.94E-03 u CF NBF 389483012 1/13/2016 I-131 -5.00E-03 4.51E-03 l.08E-02 u CF SBN 389483013 1113/2016 I-131 l.72E-03 5.64E-03 l.93E-02 u CF DOW 389483014 1/13/2016 I-131 -l.40E-04 5.45E-03 l.91E-02 u CF COL 389483015 1/13/2016 I-131 -4.46E-03 6.50E-03 l.85E-02 u CF ONS-1 389483016 1113/2016 I-131 -2.43E-03 5.76E-03 l.71E-02 u CF ONS-2 389483017 1/13/2016 I-131 -l.09E-02 5.99E-03 1.16E-02 u CF ONS-3 389483018 1113/2016 I-131 2.13E-03 6.32E-03 2.19E-02 u CF ONS-4 389483019 1/13/2016 1-131 -9.28E-04 5.25E-03 l.71E-02 u CF ONS-5 389483020 1113/2016 I-131 4.68E-03 6.36E-03 2.25E-02 u CF ONS-6 389483021 1/13/2016 I-131 -2.46E-03 6.21E-03 l.88E-02 u CF NBF 389873012 1/20/2016 I-131 -8.27E-03 7.03E-03 l.72E-02 u CF SBN 389873013 1/20/2016 I-131 -2.07E-03 6.54E-03 2.03E-02 u CF DOW 389873014 1/20/2016 I-131 -1.72E-03 5.54E-03 l.73E-02 u CF COL 389873015 1/20/2016 I-131 -6.88E-03 5.22E-03 1.29E-02 u CF ONS-1 389873016 1/20/2016 1-131 -l.86E-03 4.92E-03 1.50E-02 u CF ONS-2 389873017 1/20/2016 I-131 -8.96E-03 7.74E-03 1.97E-02 u CF ONS-3 389873018 1/20/2016 I-131 2.44E-03 9.47E-03 3.21E-02 u CF ONS-4 389873019 1/20/2016 1-131 -3.28E-03 7.62E-03 2.34E-02 u .CF ONS-5 389873020 1/20/2016 I-131 -2.12E-03 5.17E-03 l.53E-02 u CF ONS-6 389873021 1/20/2016 1-131 5.12E-03 5.61E-03 2.0lE-02 u CF NBF 390288012 1/27/2016 1-131 -6.41E-03 5.84E-03 l.49E-02 u CF SBN

390288013 1/27/2016 1-131 -3.07E-03 4.36E-03 1.28E-02 u CF DOW 390288014 1/27/2016 I-131 4.85E-03 4.79E-03 l.77E-02 u CF COL 390288015 1/27/2016 I-131 -2.69E-03 5.30E-03 l.49E-02 u CF ONS-1 390288016 1/27/2016 I-131 4.lOE-03 6.12E-03 2.19E-02 u CF ONS-2 390288017 1/27/2016 I-131 7.64E-03 7.07E-03 2.64E-02 u CF ONS-3 390288018 1/27/2016 I-131 -1.80E-03 5.09E-03 1.62E-02 u CF ONS-4 390288019 1/27/2016 1-131 l.28E-03 5.22E-03 l.80E-02 u CF ONS-5 390288020 1/27/2016 I-131 -7.12E-03 5.84E-03 l.42E-02 u CF ONS-6 390288021 1127/2016 I-131 -5.72E-03 9.38E-03 2.67E-02 u CF NBF 390825012 2/3/2016 I-131 l.59E-03 5.91E-03 2.04E-02 u CF SBN 390825013 2/3/2016 I-131 -4.34E-03 6.86E-03 2.14E-02 u CF DOW 390825014 2/3/2016 I-131 -3.43E-03 6.96E-03 2.20E-02 u CF COL 390825015 2/3/2016 1-131 l.23E-02 7.69E-03 2.80E-02 u CF ONS-1 390825016 2/3/2016 1-131 4.92E-03 5.32E-03 l.98E-02 u CF ONS-2 390825017 2/3/2016 I-131 2.90E-04 1.18E-02 3.84E-02 u CF ONS-3 390825018 2/3/2016 1-131 -l.71E-03 5.56E-03 l.69E-02 u CF ONS-4 390825019 2/3/2016 1-131 3.97E-03 3.72E-03 l.47E-02 u CF ONS-5 390825020 2/3/2016 1-131 -2.26E-03 7.33E-03 2.29E-02 u CF. ONS-6 390825021 2/3/2016 I-131 -3.44E-03 4.39E-03 l.17E-02 u D-34 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016* SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 391285012 2/10/2016 I-131 -1.IOE-02 6.24E-03 1.50E-02 u CF SBN 391285013 2/10/2016 I-131 -5.75E-03 5.36E-03 1.39E-02 u CF DOW 391285014 2/10/2016 I-131 -l.04E-03 4.41E-03 l.35E-02 u CF COL 391285015 2/10/2016 I-131 4.48E-03 7.27E-03 2.65E-02 u CF ONS-1 391285016 2/10/2016 I-131 -5.20E-03 4.56E-03 9.92E-03 u CF ONS-2 391285017 2/10/2016 I-131 l.95E-03 4.22E-03 l.51E-02 u CF ONS-3 391285018 2/10/2016 I-131 -4.68E-03 5.SOE-03 l.53E-02 u CF ONS-4 391285019 2/10/2016 I-131 4.00E-03 6.91E-03 2.44E-02 u CF ONS-5 391285020 2/10/2016 I-131 2.86E-03 5.lOE-03 l.81E-02 u CF ONS-6 391285021 2/10/2016 I-131 -l.OSE-02 6.47E-03 l.38E-02 u CF NBF 391696012 2/17/2016 I-131 3.44E-03 6.57E-03 2.28E-02 u CF SBN 391696013 2/17/2016 I-131 -4.82E-04 4.94E-03 L56E-02 u CF DOW 391696014 2/17/2016 I-131 9.07E-04 5.3 lE-03 l.77E-02 u CF COL 391696015 2/17/2016 I-131 6.09E-03 4.80E-03 l.91E-02 u CF ONS-1 391696016 2/17/2016 I-131 5.09E-03 7.87E-03 2.78E-02 u CF ONS-2 391696017 2/17/2016 I-131 3.54E-04 6.35E-03 2.07E-02 u CF ONS-3 391696018 2/17/2016 I-131 1.16E-02 7.79E-03 2.83E-02 u CF ONS-4 391696019 2/17/2016 I-131 2.54E-03 5.06E-03 l.70E-02 u CF ONS-5 391696020 2/17/2016 I-131 9.28E-03 l.02E-02 3.67E-02 u CF ONS-6 391696021 2/17/2016 I-131 9.13E-05 6.57E-03 2.17E-02 u CF NBF 392125012 2/24/2016 I-131 l.26E-03 4.81E-03 l.63E-02 u CF SBN 392125013 2/24/2016 I-131 -1.16E-03 5.31E-03 l.71E-02 u CF DOW 392125014 2/24/2016 I-131 -7.49E-04 6.85E-03 2.27E-02 u CF COL 392125015 2/24/2016 I-131 2.lOE-03 8.03E-03 2.70E-02 u CF ONS-1 392125016 2/24/2016 I-131 l.96E-03 4.62E-03 l.62E-02 u CF ONS-2 392125017 2/24/2016 I-131 9.0lE-03 8.73E-03 2.85E-02 u CF ONS-3 392125018 2/24/2016 I-131 5.73E-04 6.82E-03 2.24E-02 u CF ONS-4 392125019 2/24/2016 I-131 8.87E-03 6.87E-03 2.48E-02 u CF ONS-5 392125020 2/24/2016 I-131 -9.25E-03 7.12E-03 l.86E-02 u CF ONS-6 392125021 2/24/2016 I-131 -4.40E-03 6.54E-03 l.88E-02 u CF NBF 392609012 3/2/2016 I-131 -l.04E-03 1.15E-02 3.69E-02 u CF SBN 392609013 3/2/2016 I-131 8.92E-03 6.58E-03 2.40E-02 u CF DOW 392609014 3/2/2016 I-131 -4.74E-04 4.56E-03 l.45E-02 u CF COL 392609015 3/2/2016 I-131 -5.65E-03 4.98E-03 1.32E-02 u CF ONS-1 392609016 3/2/2016 I-131 -8.29E-03 7.39E-03 1.63E-02 u CF ONS-2 392609017 3/2/2016 I-131 2.63E-03 4.19E-03 1.53E-02 u CF ONS-3 392609018 3/2/2016 I-131 l.72E-02 l.llE-02 4.12E-02 u CF ONS-4 392609019 3/2/2016 I-131 -8.23E-03 6.35E-03 l.65E-02 u CF ONS-5 392609020 3/2/2016 I-131 -l.67E-03 6.llE-03 l.99E-02 u CF ONS-6 392609021 3/2/2016 I-131 9.24E-03 l.OlE-02 3.70E-02 u CF NBF 393036012 3/9/2016 I-131 7.84E-04 7.46E-03 2.46E-02 u CF SBN 393036013 3/9/2016 I-131 3.29E-03 6.67E-03 2.31E-02 u CF DOW 393036014 3/9/2016 I-131 l.57E-03 5.77E-03 2.00E-02 u CF COL 393036015 3/912016 I-131 8.13E-03 6.58E-03 2.47E-02 u CF ONS-1 393036016 3/9/2016 I-131 -2.03E-03 5.68E-03 l.76E-02 u CF ONS-2 393036017 3/9/2016 I-131 2.89E-05 4.64E-03 1.53E-02 u CF ONS-3 393036018 3/9/2016 I-131 8.03E-04 5.15E-03 1.76E-02 u CF ONS-4 393036019 3/9/2016 I-131 -9.84E-03 5.43E-03 l.llE-02 u CF ONS-5 393036020 3/9/2016 I-131 -6.88E-03 6.15E-03 l.55E-02 u CF ONS-6 393036021 3/9/2016 I-131 -2.21E-03 5.07E-03 l.57E-02 u D-35 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE *STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 393504012 3/16/2016 I-131 5.32E-04 4.69E-03 l.62E-02 u CF SBN 393504013 3/16/2016 I-131 -6.0IE-04 4.37E-03 l.39E-02 u CF DOW 393504014 3/16/2016 I-131 l.77E-03 5.57E-03 l.92E-02 u CF COL 393504015 3/16/2016 I-131 5.12E-04 8.31E-03 2.81E-02 u CF ONS-1 393504016 3/16/2016 I-131 3.51E-03 5.16E-03 l.84E-02 u CF ONS-2 393504017 3/16/2016 I-131 -4.68E-04 6.25E-03 2.00E-02 u CF ONS-3 393504018 3/16/2016 I-131 -l.15E-02 5.54E-03 7.22E-03 u CF ONS-4 393504019 3/16/2016 I-131 -l.08E-02 l.21E-02 3.30E-02 u CF ONS-5 393504020 3/16/2016 I-131 -l.48E-03 6.39E-03 l.98E-02 u CF ONS-6 393504021 3/16/2016 I-131 4.18E-03 4.30E-03 l.69E-02 u CF NBF 393880012 3/23/2016 I-131 -2.16E-03 4.84E-03 l.40E-02 u CF SBN 393880013 3/23/2016 I-131 -5.46E-03 7.02E-03 2.14E-02 u CF DOW 393880014 3/23/2016 I-131 7.96E-03 4.73E-03 l.87E-02 u CF COL 393880015 3/23/2016 I-131 -9.34E-04 4.25E-03 1.16E-02 u CF ONS-1 393880016 3/23/2016 I-131 2.54E-03 5.81E-03 l.99E-02 u CF ONS-2 393880017 3/23/2016 I-131 4.21E-03 8.05E-03 2.79E-02 u CF ONS-3 393880018 3/23/2016 I-131 8.06E-03 6.15E-03 2.34E-02 u CF ONS-4 393880019 3/23/2016 I-131 2.34E-03 5.43E-03 l.90E-02 u CF ONS-5 393880020 3/23/2016 I-131 -5.18E-03 4.91E-03 l.20E-02 u CF ONS-6 393880021 3/23/2016 I-131 7.38E-03 6.15E-03 2.28E-02 u CF NBF 394190012 3/30/2016 I-131 4.68E-04 4.99E-03 l.66E-02 u CF SBN 394190013 3/30/2016 I-131 -6.llE-03 6.02E-03 l.60E-02 u CF DOW 394190014 3/30/2016 I-131 8.96E-03 5.08E-03 l.91E-02 u CF COL 394190015 3/30/2016 I-131 4.SOE-04 4.65E-03 l.53E-02 u CF ONS-1 394190016 3/30/2016 I-131 8.61E-03 7.55E-03 2.78E-02 u CF ONS-2 394190017 3/30/2016 1-131 6.91E-03 5.98E-03 2.14E-02 u CF ONS-3 394190018 3/30/2016 I-131 -3.82E-03 9.40E-03 2.82E-02 u CF ONS-4 394190019 3/30/2016 I-131 5.30E-03 6.74E-03 2.39E-02 u CF ONS-5 394190020 3/30/2016 I-131 -2.86E-03 5.68E-03 l.72E-02 u CF ONS-6 394190021 3/30/2016 1-131 4.57E-04 4.46E-03 l.51E-02 u CF NBF 394892012 4/6/2016 I-131 l.63E-03 7.35E-03 2.53E-02 u CF SBN 394892013 4/6/2016 I-131 5.61E-03 5.77E-03 2.18E-02 u CF DOW 394892014 4/6/2016 I-131 -8.50E-04 6.61E-03 2.09E-02 u CF COL 394892015 4/6/2016 I-131 -7.09E-03 6.55E-03 l.79E-02 u CF ONS-1 394892016 4/6/2016 I-131 -5.26E-03 5.34E-03 l.39E-02 u CF ONS-2 394892017 4/6/2016 I-131 5.25E-03 5.94E-03 2.18E-02 u CF ONS-3 394892018 4/6/2016 I-131 l.22E-02 6.94E-03 2.52E-02 u CF ONS-4 394892019 4/6/2016 I-131 9.99E-03 9.19E-03 3.22E-02 u CF ONS-5 394892020 4/6/2016 I-131 8.00E-03 9.39E-03 l.89E-02 u CF ONS-6 394892021 4/6/2016 I-131 5.28E-03 6.03E-03 2.19E-02 u CF NBF 395460012 4113/2016 I-131 4.91E-03 7.16E-03 2.53E-02 u CF SBN 395460013 4113/2016 I-131 3.84E-03 5.0SE-03 l.79E-02 u CF DOW 395460014 4113/2016 I-131 6.80E-03 4.83E-03 l.77E-02 u CF COL 395460015 4/13/2016 I-131 6.41E-03 4.77E-03 l.82E-02 u CF ONS-1 395460016 4/13/2016 I-131 7.64E-04 5.84E-03 l.92E-02 u CF ONS-2 395460017 4113/2016 1-131 -5.90E-04 4.58E-03 l.43E-02 u CF ONS-3 395460018 4113/2016 1-131 2.llE-03 3.85E-03 l.36E-02 u CF ONS-4 395460019 4113/2016 I-131 8.51E-04 4.68E-03 l.65E-02 u CF ONS-5 395460020 4/13/2016 I-131 2.99E-03 6.17E-03 2.lOE-02 u CF ONS-6 395460021 4/13/2016 I-131 -6.28E-04 5.00E-03 l.58E-02 u D-36 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. i\1DC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 395901012 4/20/2016 I-131 -3.76E-03 8.65E-03 2.55E-02 u CF SBN 395901013 4/20/2016 I-131 3.85E-03 6.30E-03 2.23E-02 u CF DOW 395901014 4/20/2016 I-131 -1.72E-03 6.71E-03 2.07E-02 u CF COL 395901015 4/20/2016 I-131 2.16E-03 9.69E-03 3.26E-02 u CF ONS-1 395901016 4/20/2016 I-131 l.81E-03 5.04E-03 1.75E-02 u CF ONS-2 395901017 4/20/2016 I-131 2.26E-03 5.26E-03 1.84E-02 u CF ONS-3 395901018 4/20/2016 I-131 -4.71E-03 4.74E-03 1.34E-02 u CF ONS-4 395901019 4/20/2016 I-131 l.98E-03 6.19E-03 2.IOE-02 u CF ONS-5 395901020 4/20/2016 I-131 8.77E-03 5.53E-03 2.08E-02 u CF ONS-6 395901021 4/20/2016 I-131 6.81E-03 6.IOE-03 2.24E-02 u CF NBF 396336012 4/27/2016 I-131 -2.81E-03 9.12E-03 2.85E-02 u CF SBN 396336013 4/27/2016 I-131 -l.32E-02 8.42E-03 1.73E-02 u CF DOW 396336014 4/27/2016 I-131 l.75E-03 6.48E-03 2.25E-02 u CF COL 396336015 4/27/2016 I-131 1.43E-04 3.97E-03 1.33E-02 u CF ONS-1 396336016 4/27/2016 I-131 2.41E-03 7.63E-03 2.34E-02 u CF ONS-2 396336017 4/27/2016 I-131 -3.47E-03 5.43E-03 l.57E-02 u CF ONS-3 396336018 4/27/2016 I-131 2.82E-03 5.62E-03 l.97E-02 u CF ONS-4 396336019 4/27/2016 I-131 7.24E-04 5.40E-03 1.84E-02 u CF ONS-5 396336020 4/27/2016 I-131 2.64E-03 4.86E-03 l.71E-02 u CF ONS-6 396336021 4/27/2016 I-131 -l.45E-03 5.90E-03 l.93E-02 u CF NBF 396892012 5/4/2016 I-131 4.38E-03 7.04E-03 2.21E-02 u CF SBN 396892013 5/4/2016 I-131 1.25E-03 4.48E-03 1.56E-02 u CF DOW 396892014 5/4/2016 I-131 -3.84E-04 6.16E-03 1.97E-02 u CF COL 396892015 5/4/2016 I-131 -1.33E-04 3.79E-03 1.23E-02 u CF ONS-1 396892016 5/4/2016 I-131 2.53E-03 6.l IE-03 2.14E-02 u CF ONS-2 396892017 5/4/2016 I-131 1.40E-02 6.97E-03 2.67E-02 u CF ONS-3 396892018 5/4/2016 I-131 l.85E-03 3.58E-03 1.33E-02 u CF ONS-4 396892019 5/4/2016 I-131 l.09E-02 6.22E-03 2.38E-02 u CF ONS-5 396892020 5/4/2016 I-131 3.99E-03 5.25E-03 l.89E-02 u CF ONS-6 396892021 5/4/2016 I-131 1.57E-03 5.49E-03 1.92E-02 u CF NBF 397370012 5/11/2016 I-131 -4.54E-03 6.53E-03 1.85E-02 u CF SBN 397370013 5/11/2016 I-131 -6.38E-03 7.85E-03 2.23E-02 u CF DOW 397370014 5/11/2016 I-131 -4.37E-04 5.86E-03 1.94E-02 u CF COL 397370015 5/11/2016 I-131 -4.28E-03 4.99E-03 l.31E-02 u CF ONS-1 397370016 5/11/2016 I-131 l.55E-04 4.72E-03 1.58E-02 u CF ONS-2 397370017 5/11/2016 I-131 l.22E-02 5.88E-03 2.21E-02 u CF ONS-3 397370018 5/11/2016 I-131 l.57E-02 8.89E-03 3.23E-02 u CF ONS-4 397370019 5/11/2016 I-131 8.81E-05 6.34E-03 2.09E-02 u CF ONS-5 397370020 5/11/2016 I-131 -2.99E-03 4.54E-03 1.35E-02 u CF ONS-6 397370021 5/11/2016 I-131 5.71E-04 4.94E-03 1.63E-02 u CF NBF 397851012 5/18/2016 I-131 -3.91E-03 5.34E-03 1.48E-02 u CF SBN 397851013 5/18/2016 I-131 -7.lOE-03 6.13E-03 1.64E-02 u CF DOW 397851014 5/18/2016 I-131 -6.12E-03 5.93E-03 1.50E-02 u CF COL 397851015 5/18/2016 I-131 -3.lOE-03 4.06E-03 l.07E-02 u CF ONS-1 397851016 5/18/2016 I-131 7.13E-03 5.77E-03 2.12E-02 u CF ONS-2 397851017 5/18/2016 I-131 -l.54E-03 3.57E-03 1.00E-02 u CF ONS-3 397851018 5/18/2016 I-131 2.64E-04 5.67E-03 l.89E-02 u CF ONS-4 397851019 5/18/2016 I-131 -5.46E-03 5.90E-03 1.37E-02 u CF ONS-5 397851020 5/18/2016 I-131 2.12E-03 3.48E-03 l.26E-02 u CF ONS-6 397851021 5/18/2016 I-131 1.26E-03 4.73E-03 1.64E-02 u D-37 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 398279012 5/25/2016 I-131 5.08E-03 5.35E-03 1.99E-02 u CF SBN 398279013 5/25/2016 I-131 l.16E-02 8.80E-03 3.24E-02 u CF DOW 398279014 5/25/2016 I-131 -l.lOE-03 4.83E-03 1.57E-02 u CF COL 398279015 5/25/2016 I-131 4.28E-03 5.29E-03 l.96E-02 u CF ONS-1 398279016 5/25/2016 I-131 l.20E-02 7.68E-03 2.83E-02 u CF ONS-2 398279017 5/25/2016 I-131 -2.45E-03 5.57E-03 l.65E-02 u CF ONS-3 398279018 5/25/2016 I-131 -7.36E-04 6.86E-03 2.18E-02 u CF ONS-4 398279019 5/25/2016 I-131 -3.19E-03 4.84E-03 l.39E-02 u CF ONS-5 398279020 5/25/2016 I-131 l.35E-02 7.84E-03 2.99E-02 u CF ONS-6 398279021 5/25/2016 I-131 4.0lE-03 5.77E-03 2.09E-02 u CF NBF 398620012 6/1/2016 I-131 -l.26E-03 5.73E-03 1.78E-02 u CF SBN 398620013 6/1/2016 I-131 8.30E-03 6.34E-03 2.36E-02 u CF DOW 398620014 6/1/2016 I-131 -4.55E-03 4.67E-03 1.29E-02 u CF COL 398620015 6/1/2016 I-131 l.04E-03 4.95E-03 l.66E-02 u CF ONS-1 398620016 6/1/2016 I-131 -2.55E-03 6.75E-03 2.llE-02 u CF ONS-2 398620017 6/1/2016 I-131 4.43E-03 4.90E-03 l.83E-02 u CF ONS-3 398620018 6/1/2016 I-131 5.73E-04 8.84E-03 2.91E-02 u CF ONS-4 398620019 6/1/2016 1-131 3.32E-03 4.75E-03 1.73E-02 u CF ONS-5 398620020 6/1/2016 1-131 1.31E-02 5.69E-03 2.24E-02 u CF ONS-6 398620021 6/1/2016 I-131 -2.20E-03 4.64E-03 l.44E-02 u CF NBF 399139012 6/8/2016 I-131 -3.46E-03 6.47E-03 1.96E-02 u CF SBN 399139013 6/8/2016 I-131 9.32E-03 5.92E-03

2.24E-02 u CF DOW 399139014 6/8/2016 . I-131 3.42E-03 5.70E-03 2.03E-02 u CF COL 399139015 6/8/2016 I-131 5.24E-03 6.99E-03 2.49E-02 u CF ONS-1 399139016 6/8/2016 I-131 4.17E-03 5.44E-03 l.93E-02 u CF ONS-2 399139017 6/8/2016 1-131 3.67E-03 8.24E-03 2.88E-02 u CF ONS-3 399139018 6/8/2016 1-131 1.16E-02 3.89E-03 l.30E-02 u CF ONS-4 399139019 6/8/2016 1-131 -4.16E-03 5.24E-03 l.47E-02 u CF ONS-5 399139020 6/8/2016 1-131 -1.59E-06 5.92E-03 1.98E-02 u CF ONS-6 399139021 6/8/2016 1-131 5.57E-03 4.97E-03 l.89E-02 u CF NBF 399591012 6/15/2016 I-131 3.57E-03 5.61E-03 2.0lE-02 u CF SBN 399591013 6/15/2016 1-131 4.64E-03 6.38E-03 2.27E-02 u CF DOW 399591014 6/15/2016 1-131 -1.41E-03 5.51E-03 1.79E-02 u CF COL 399591015 6/15/2016 I-131 5.15E-03 6.86E-03 2.45E-02 u CF ONS-1 399591016 6115/2016 I-131 -1.19E-02 5.75E-03 7.31E-03 u CF ONS-2 399591017 6/15/2016 1-131 -5.49E-03 6.59E-03 1.82E-02 u CF ONS-3 399591018 6/15/2016 I-131 -3.53E-03 5.76E-03 1.75E-02 u CF ONS-4 399591019 6/15/2016 I-131 -7.56E-05 5.32E-03 1.78E-02 u CF ONS-5 399591020 6/15/2016 I-131 4.25E-03 4.86E-03 l.81E-02 u CF ONS-6 399591021 6/15/2016 I-131 2.14E-03 4.53E-03 1.61E-02 u CF NBF 400075012 6/22/2016 I-131 -3.58E-03 5.70E-03 l.67E-02 u CF SBN 400075013 6/22/2016 I-131 -9.00E-03 5.78E-03 8.36E-03 u CF DOW 400075014 6/22/2016 1-131 -9.25E-04 3.56E-03 1.08E-02 u CF COL 400075015 6/22/2016 I-131 -7.91E-03 5.lOE-03 8.69E-03 u CF ONS-1 400075016 6/22/2016 I-131 -3.85E-03 6.36E-03 1.91E-02 u CF ONS-2 400075017 6/22/2016 I-131 4.30E-03 6.18E-03 2.17E-02 u CF ONS-3 400075018 6/22/2016 I-131 -5.06E-04 4.83E-03 1.56E-02 u CF ONS-4 400075019 6/22/2016 I-131 2.94E-03 5.99E-03 2.05E-02 u CF ONS-5 400075020 6/22/2016 1-131 5.31E-03 6.32E-03 2.36E-02 u CF ONS-6 400075021 6/22/2016 1-131 4.47E-03 4.0lE-03 1.60E-02 u D-38 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 400502012 6/29/2016 I-131 1.44E-02 4.71E-03 7.02E-03 UI CF SBN 400502013 6/29/2016 I-131 -2.91E-03 4.68E-03 1.42E-02 u CF DOW 400502014 6/29/2016 I-131 6.87E-05 3.48E-03 1.13E-02 u CF COL 400502015 6/29/2016 I-131 -2.40E-03 3.90E-03 1.17E-02 u CF ONS-1 400502016 6/29/2016 I-131 2.44E-03 5.22E-03 1.84E-02 u CF ONS-2 400502017 6/29/2016 I-131 1.70E-03 4.61E-03 1.54E-02 u CF ONS-3 400502018 6/29/2016 I-131 -3.58E-03 3.69E-03 1.02E-02 u CF ONS-4 400502019 6/29/2016 I-131 4.88E-03 6.40E-03 2.27E-02 u CF ONS-5 400502020 6/29/2016 I-131 6.13E-05 4.36E-03 1.41E-02 u CF ONS-6 400502021 6/29/2016 I-131 7.45E-03 4.19E-03 l.55E-02 u CF NBF 401150012 7/6/2016 I-131 -7.35E-03 4.67E-03 1.04E-02 u CF SBN 401150013 7/6/2016 I-131 -l.SOE-04 6.91E-03 2.29E-02 u CF DOW 401150014 7/6/2016 I-131 -9.12E-04 5.14E-03 1.68E-02 u CF COL 401150015 7/6/2016 I-131 -4.99E-03 4.68E-03 1.19E-02 u CF ONS-1 401150016 7/6/2016 I-131 -7.92E-03 4.57E-03 7.30E-03 u CF ONS-2 401150017 7/6/2016 I-131 -l.33E-02 7.00E-03 1.44E-02 u CF ONS-3 401150018 7/6/2016 I-131 3.12E-04 3.66E-03 1.21E-02 u CF ONS-4 401150019 7/6/2016 I-131 7.26E-04 6.93E-03 2.37E-02 u CF ONS-5 401150020 7/6/2016 I-13 I 3.68E-03 7.35E-03 2.54E-02 u CF ONS-6 401150021 7/6/2016 I-131 -2.42E-04 7.38E-03 2.lSE-02 u CF NBF 401711012 7/13/2016 I-131 8.78E-03 6.95E-03 2.56E-02 u CF SBN 401711013 7/13/2016 I-131 -3.25E-03 3.56E-03 8.61E-03 u CF DOW 401711014 7/13/2016 I-131 -4.92E-03 6.12E-03 1.76E-02 u CF COL 401711015 7/13/2016 I-131 -2.SOE-03 5.18E-03 1.54E-02 u CF ONS-1 401711016 7/13/2016 I-131 6.56E-03 5.86E-03 2.15E-02 u CF ONS-2 401711017 7/13/2016 4.49E-03 4.30E-03 l.58E-02 u CF ONS-3 401711018 7/13/2016 I-131 -5.47E-03 5.31E-03 1.38E-02 u CF ONS-4 401711019 7/13/2016 I-131 -6.lOE-04 5.26E-03 1.74E-02 u CF ONS-5 401711020 7/13/2016 I-131 3.15E-03 5.86E-03 2.02E-02 u CF ONS-6 401711021 7/13/2016 I-131 3. l lE-03 6.64E-03 2.27E-02 u CF NBF 402227012 7/20/2016 I-131 -1.64E-02 7.26E-03 1.29E-02 u CF SBN 402227013 7/20/2016 I-131 1.36E-03 4.53E-03 1.54E-02 u CF DOW 402227014 7/20/2016 I-131 5.03E-04 4.22E-03 1.43E-02 u CF COL 402227015 7/20/2016 I-131 7.31E-03 4.17E-03 1.06E-02 u CF ONS-1 402227016 7/20/2016 I-131 1.40E-03 4.50E-03 1.52E-02 u CF ONS-2 402227017 7/20/2016 I-131 6.0lE-03 4.54E-03 1.74E-02 u CF ONS-3 402227018 7/20/2016 I-131 -2.76E-03 4.34E-03 l.26E-02 u CF ONS-4 402227019 7/20/2016 I-131 1.13E-03 3.65E-03 1.24E-02 u CF ONS-5 402227020 7/20/2016 I-131 -2.82E-03 4.77E-03 l.47E-02 u CF ONS-6 402227021 7/20/2016 I-131 2.SOE-03 5.31E-03 1.84E-02 u CF NBF 402770012 7/27/2016 I-131 1.38E-02 4.88E-03 2.03E-02 u CF SBN 402770013 7/27/2016 I-131 2.25E-03 3.54E-03 1.32E-02 u CF DOW 402770014 7/27/2016 I-131 -5.75E-03 4.88E-03 1.34E-02 u CF COL 402770015 7/27/2016 I-131 -2.61E-03 6.17E-03 1.96E-02 u CF ONS-1 402770016 7/27/2016 I-131 9.26E-04 3.49E-03 1.19E-02 u CF ONS-2 402770017 7/27/2016 I-131 -2.83E-03 3.90E-03 1.12E-02 u CF ONS-3 402770018 7/27/2016 I-131 5.89E-03 4.94E-03 1.85E-02 u CF. ONS-4 402770019 7/27/2016 I-131 4.67E-03 4.99E-03 1.82E-02 u CF ONS-5 402770020 7/27/2016 I-131 6.66E-03 5.92E-03 2.14E-02 u CF ONS-6 402770021 7/27/2016 I-131 -4.lOE-03 3.34E-03 7.14E-03 u D-39 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 403299012 8/3/2016 I-131 6.15E-03 7.84E-03 2.86E-02 u CF SBN 403299013 8/3/2016 I-131 2.45E-03 6.40E-03 2.23E-02 u CF DOW 403299914 8/3/2016 I-131 -3.60E-03 5.27E-03 l.53E-02 u CF COL 403299015 8/3/2016 I-131 l.06E-03 4.78E-03 l.62E-02 u CF ONS-1 403299016 8/3/2016 I-131 7.72E-03 6.07E-03 2.15E-02 u CF ONS-2 403299017 8/3/2016 I-131 4.54E-03 3.0lE-03 1.14E-02 u CF ONS-3 403299018 8/3/2016 I-131 -2.50E-03

3.56E-03 l.04E-02 u CF ONS-4 403299019 8/3/2016 I-131 3.25E-03 4.33E-03 l.53E-02 u CF ONS-5 403299020 8/3/2016 I-131 -1.31E-03 3.23E-03 l.OlE-02 u CF ONS-6 403299021 8/3/2016 I-131 -8.94E-04 3.57E-03 l.13E-02 u CF NBF 403718012 8/10/2016 I-131 -3.21E-03 5.80E-03 1.59E-02 u CF SBN 403718013 8/10/2016 I-131 6.53E-03 6.07E-03 2.30E-02 u CF DOW 403718014 8/10/2016 I-131 9.30E-03 7.31E-03 2.70E-02 u CF COL 403718015 8/10/2016 I-131 3.69E-03 6.27E-03 2.33E-02 u CF ONS-1 403718016 . 8/10/2016 I-131 -7.29E-03 7.67E-03 l.97E-02 u CF ONS-2 403718017 8/10/2016 I-131 -6.30E-03 5.46E-03 l.36E-02 u CF ONS-3 403718018 8/10/2016 I-131 4.72E-03 5.28E-03 1.88E-02 u CF ONS-4 403718019 8/10/2016 I-131 6.02E-04 6.65E-03 2.27E-02 u CF ONS-5 403718020 8/10/2016 I-131 5.20E-03 7.63E-03 2.66E-02 u CF ONS-6 403718021 8/10/2016 I-131 1.54E-02 8.61E-03 3.23E-02 u *cF NBF 404249012 8/17/2016 I-131 -6.85E-03 6.0lE-03 l.29E-02 u CF SBN 404249013 8/17/2016 I-131 6.05E-05 5.95E-03 2.0lE-02 u CF DOW 404249014 8117/2016 I-131 1.lOE-02 7.94E-03 2.87E-02 u CF COL 404249015 8/17/2016 I-131 -2.87E-03 7.41E-03 2.28E-02 u CF ONS-1 404249016 8/17/2016 I-131 -7.95E-04 4.0lE-03 1.26E-02 u CF ONS-2 404249017 8/17/2016 I-131 -1.99E-03 l.02E-02 2.89E-02 u CF ONS-3 404249018 8/17/2016 I-131 6.22E-03 5.47E-03 2.02E-02 u CF ONS-4 404249019 8/17/2016 I-131 2.88E-03 4.51E-03 l.50E-02 u CF ONS-5 404249020 8/17/2016 I-131 4.14E-03 7.43E-03 2.71E-02 u CF ONS-6 404249021 8/17/2016 I-131 l.67E-03 6.85E-03 2.31E-02 u CF NBF 404740012 8/24/2016 I-131 4.60E-03 4.27E-03 l.66E-02 u CF SBN 404740013 8/24/2016 I-131 7.33E-03 4.53E-03 l.80E-02 u CF DOW 404740014 8/24/2016 I-131 2.83E-04 4.53E-03 l.53E-02 u CF COL 404740015 8/24/2016 I-131 -3.58E-03 4.96E-03 1.43E-02 u CF ONS-1 404740016 8/24/2016 I-131 -6.13E-03 4.62E-03 8.59E-03 u CF ONS-2 404740017 8/24/2016 I-131 4.32E-03 4.65E-03 l.74E-02 u CF ONS-3 404740018 8/24/2016 I-131 -3.91E-03 5.00E-03 l.51E-02 u CF ONS-4 404740019 8/24/2016 I-131 4.06E-03 4.76E-03 l.80E-02 u CF ONS-5 404740020 8/24/2016 I-131 -5.20E-03 4.47E-03 l.lOE-02 u CF ONS-6 404740021 8/24/2016 I-131 -6.51E-03 5.29E-03 l.29E-02 u CF NBF 405181012 8/31/2016 I-131 -l.06E-03 3.80E-03 l.22E-02 u CF SBN 405181013 8/31/2016 I-131 -9.21E-04 5.74E-03 l.83E-02 u CF DOW 405181014 8/31/2016 I-131 l.68E-03 l.59E-03 7.17E-03 u CF COL 405181015 8/31/2016 I-131 -7.60E-03 4.06E-03 6.35E-03 u CF ONS-1 405181016 8/31/2016 I-131 l.63E-03 4.06E-03 l.44E-02 u CF ONS-2 405181017 8/31/2016 I-131 l.61E-03 2.93E-03 l.lOE-02 u CF ONS-3 405181018 8/31/2016 I-131 2.05E-03 7.30E-03 2.58E-02 u CF ONS-4 405181019 8/31/2016 I-131 l.13E-03 4.06E-03 l.44E-02 u CF ONS-5 405181020 8/31/2016 I-131 -5.54E-03 8.02E-03 2.37E-02 u CF ONS-6 405181021 8/31/2016 I-131 -2.26E-05 4.87E-03 l.61E-02 u D-40 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 405568012 917/2016 1-131 -l.93E-03 3.14E-03 9.39E-03 u CF SBN 405568013 917/2016 1-131 -l.37E-03 3.76E-03 l. l 7E-02 u CF DOW 405568014 917/2016 I-131 -3.09E-04 2.94E-03 9.68E-03 u CF COL 405568015 917/2016 1-131 -3.35E-03 2.81E-03 7.00E-03 u CF ONS-1 405568016 917/2016 I-131 -l.12E-04 3.25E-03 1.llE-02 u CF ONS-2 405568017 917/2016 I-131 1.16E-03 3.95E-03 l.35E-02 u CF ONS-3 405568018 917/2016 I-131 8.57E-04 2.95E-03 1.04E-02 u CF ONS-4 405568019 917/2016 I-131 O.OOE+OO O.OOE+OO 1.40E-02 u CF ONS-5 405568020 917/2016 1-131 -7.71E-03 5.00E-03 1.lOE-02 u CF ONS-6 405568021 917/2016 I-131 -2.08E-03 3.24E-03 9.17E-03 u CF NBF 406075012 9/14/2016 I-131 -4.35E-03 4.51E-03 1.03E-02 u CF SBN 406075013 9/14/2016 I-131 l.lOE-03 5.69E-03 1.98E-02 u CF DOW 406075014 9/14/2016 I-131 3.30E-03 3.54E-03 l.32E-02 u CF COL 406075015 9/14/2016 I-131 -2.49E-04 3.65E-03 l.20E-02 u CF ONS-1 406075016 9/14/2016 I-131 1.08E-02 6.03E-03 1.12E-02 U CF ONS-2 406075017 9/14/2016 I-131 2.64E-03 2.71£-03 1.23E-02 U CF ONS-3 406075018 9/14/2016 I-131 -3.12E-04 2.75E-03 8.20E-03 u CF ONS-4 406075019 9/14/2016 I-131 -3.23E-03 4.86E-03 1.48E-02 U CF ONS-5 406075020 9/14/2016 I-131 -4.44E-04 4.62E-03 1.46E-02 U CF ONS-6 406075021 9/14/2016 I-131 -1.15E-02 8.82E-03 l.87E-02 U CF NBF 406606012 9/21/2016 I-131 2.81E-04 4.51E-03 1.52E-02 U CF SBN 406606013 9/21/2016 I-131 3.70E-03 4.55E-03 1.63E-02 U CF DOW 406606014 9/21/2016 I-131 9.22E-04 4.21E-03 1.49E-02 U CF COL 406606015 9/21/2016 I-131 -2.59E-03 3.15E-03 7.96E-03 u CF ONS-1 406606016 9/21/2016 I-131 1.79E-03 1.84E-03 8.33E-03 u CF ONS-2 406606017 9/21/2016 I-131 4.09E-03 5.46E-03 2.0lE-02 u CF ONS-3 406606018 9/21/2016 I-131 -3.07E-04 5.47E-03 1.77E-02 U CF ONS-4 406606019 9/21/2016 I-131 -2.84E-03 4.27E-03 1.29E-02 U CF ONS-5 406606020 9/21/2016 I-131 -3.15E-03 3.51E-03 9.03E-03 u CF ONS-6 406606021 9/21/2016 I-131 -2.91E-04 4.54E-03 1.49E-02 U CF NBF 407112012 9/28/2016 I-131 2.39E-03 4.69E-03 1.69E-02 U CF SBN 407112013 9/28/2016 I-131 7.02E-03 6.41E-03 2.45E-02 U CF DOW 407112014 9/28/2016 I-131 4.73E-03 6.08E-03 2.25E-02 U CF COL 407112015 9/28/2016 I-131 4.99E-03 6.llE-03 2.14E-02 U CF ONS-1 407112016 9/28/2016 I-131 -l.49E-03 9.23E-03 3.04E-02 U CF ONS-2 407112017 9/28/2016 I-131 -3.41E-03 6.77E-03 1.98E-02 U CF ONS-3 407112018 9/28/2016 I-131 -3.60E-03 4.3IE-03 1.13E-02 U CF ONS-4 407112019 9/28/2016 I-131 -3.76E-03 5.68E-03 1.49E-02 U CF ONS-5 407112020 9/28/2016 I-131 1.66E-03 5.00E-03 l.79E-02 U CF ONS-6 407112021 9/28/2016 I-131 5.21E-03 6.41E-03 2.39E-02 U CF NBF 407541012 10/5/2016 I-131 1.95E-03 5.55E-03 1.96E-02 U CF SBN 407541013 10/5/2016 I-131 3.44E-03 4.19E-03 1.56E-02 U CF DOW 407541014 10/5/2016 I-131 l.85E-03 4.84E-03 1.71E-02 u CF COL 407541015 10/5/2016 I-131 -4.80E-04 3.47E-03 1.15E-02 U CF ONS-1 407541016 10/5/2016 I-131 -5.74E-03 4.75E-03 9.83E-03 u CF ONS-2 407541017 10/5/2016 I-131 1.99E-03 2.04E-03 9.28E-03 u CF ONS-3 407541018 10/5/2016 I-131 -1.14E-02 7.28E-03 1.55E-02 U CF ONS-4 407541019 10/5/2016 I-131 -7.54E-03 6.62E-03 1.22E-02 U CF ONS-5 407541020 10/5/2016 I-131 6.46E-04 2.73E-03 9.78E-03 u CF ONS-6 407541021 10/5/2016 I-131 -3.20E-03 3.55E-03 8.66E-03 u D-41 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAlvlPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF NBF 408223012 10/12/2016 I-131 -l.31E-03 5.13E-03 l.70E-02 u CF SBN 408223013 10/12/2016 I-131 -2.63E-04 3.96E-03 l.29E-02 u CF DOW 408223014 10/12/2016 I-131 5.33E-03 6.50E-03 2.42E-02 u CF COL 408223015 10/12/2016 I-131 7.24E-03 4.lOE-03 l.75E-02 u CF ONS-1 408223016 10/12/2016 I-131 -9.66E-03 4.94E-03 9.91E-03 u CF ONS-2 408223017 10/12/2016 I-131 -l.83E-03 7.88E-03 2.55E-02 u CF ONS-3 408223018 10/12/2016 I-131 2.97E-03 6.65E-03 2.32E-02 u CF ONS-4 408223019 10/12/2016 I-131 -4.87E-03 3.88E-03 8.95E-03 u CF ONS-5 408223020 10/12/2016 I-131 -2.12E-03 4.05E-03 l.27E-02 u CF ONS-6 408223021 10/12/2016 I-131 -l.26E-03 7.49E-03 2.44E-02 u CF NBF 408923012 10/19/2016 I-131 -5.99E-03 5.45E-03 l.31E-02 u CF SBN 408923013 10/19/2016 I-131 -3.72E-04 4.48E-03 l.47E-02 u CF DOW 408923014 10/19/2016 I-131 8.43E-03 5.31E-03 2.12E-02 u CF COL 408923015 10/19/2016 I-131 5.90E-04 5.57E-03 l.91E-02 u CF ONS-1 408923016 10/19/2016 I-131 -6.50E-04 4.05E-03 L21E-02 u CF ONS-2 408923017 10/19/2016 I-131 2.07E-03 4.82E-03 L74E-02 u CF ONS-4 408923019 10/19/2016 I-131 -4.60E-03 2.91E-03 l.40E-03 u CF ONS-5 408923020 10/19/2016 I-131 5.27E-03 5.86E-03 2.14E-02 u CF ONS-6 408923021 10/19/2016 I-131 l.40E-02 7.06E-03 2.93E-02 u CF NBF 409381012 10/26/2016 I-131 2.SOE-03 2.08E-03 9.23E-03 u CF SBN 409381013 10/26/2016 I-131 l.93E-03 3.24E-03 l.22E-02 u CF DOW 409381014 10/26/2016 I-131 l.08E-03 3.23E-03 1.16E-02 u CF COL 409381015 10/26/2016 I-131 -7.02E-03 5.29E-03 L22E-02 u CF ONS-1 409381016 10/26/2016 I-131 l.63E-03 3.65E-03 l.31E-02 u CF ONS-2 409381017 10/26/2016 I-131 6.66E-03 4.70E-03 L79E-02 u CF ONS-3 409381018 10/26/2016 I-131 -2.00E-03 6.14E-03 l.92E-02 u CF ONS-4 409381019 10/26/2016 I-131 7.17E-03 7.03E-03 2.72E-02 u CF ONS-5 409381020 10/26/2016 I-131 6.61E-04 l.94E-03 7.26E-03 u CF ONS-6 409381021 10/26/2016 I-131 l.90E-03 3.35E-03 L24E-02 u CF NBF 409934012 11/2/2016 I-131 -8.79E-04 1.74E-03 4.37E-03 u CF SBN 409934013 11/2/2016 I-131 -6.47E-03 6.74E-03 l.78E-02 u CF DOW 409934014 11/2/2016 I-131 -5.95E-03 5.30E-03 l.43E-02 u CF COL 409934015 11/2/2016 I-131 3.75E-03 5.19E-03 l.83E-02 u CF ONS-1 409934016 11/2/2016 1-131 4.52E-03 3.99E-03 l.57E-02 u CF ONS-2 409934017 11/2/2016 1-131 6.54E-03 6.60E-03 2.40E-02 u CF ONS-3 409934018 11/2/2016 I-131 3.03E-03 4.74E-03 l.75E-02 u CF ONS-4 409934019 11/2/2016 1-131 -l.50E-03 5.59E-03 l.82E-02 u CF ONS-5 409934020 11/2/2016 I-131 -5.65E-03 5.89E-03 l.32E-02 u CF ONS-6 409934021 11/2/2016 I-131 -l.09E-04 5.34E-03 l.78E-02 u CF NBF 410456012 11/9/2016 I-131 -5.35E-03 5.60E-03 l.53E-02 u CF SBN 410456013 11/9/2016 I-131 -1.06E-03 4.36E-03 l.36E-02 u CF DOW 410456014 11/9/2016 1-131 4.62E-03 3.36E-03 1.28E-02 u CF COL 410456015 11/9/2016 1-131 -7.05E-03 5.51E-03 1.05E-02 u CF ONS-1 410456016 11/9/2016 I-131 -4.67E-03 3.47E-03 7.SOE-03 u CF ONS-2 410456017 11/9/2016 I-131 -3.41E-03 3.74E-03 l.03E-02 u CF ONS-3 410456018 11/9/2016 1-131 -3.74E-03 5.54E-03 l.58E-02 u CF ONS-4 410456019 11/9/2016 I-131 8.49E-04 5.55E-03 l.87E-02 u CF ONS-5 410456020 11/9/2016 1-131 2.58E-03 5.23E-03 1.82E-02 u CF ONS-6 410456021 11/9/2016 I-131 2.75E-03 2.89E-03 LOSE-02 u CF NBF 411037012 11/16/2016 I-131 l.55E-03 4.66E-03 l.65E-02 u D-42 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) CF SBN 411037013 11/16/2016 I-131 4.38E-04 4.15E-03 1.42E-02 u CF DOW 411037014 11116/2016 I-131 -1.40E-03 5.16E-03 l.61E-02 u CF COL 411037015 11/16/2016 I-131 -l.40E-05 4.36E-03 1.49E-02 u CF ONS-1 411037016 11116/2016 I-131 l.94E-03 4.65E-03 1.65E-02 u CF ONS-2 411037017 11116/2016 I-131 7.58E-04 3.81E-03 l.29E-02 u CF ONS-3 411037018 11/16/2016 I-131 l.49E-03 4.93E-03 l.69E-02 u CF ONS-4 411037019 11116/2016 I-131 -3.61E-04 4.32E-03 l.44E-02 u CF ONS-5 411037020 11116/2016 I-131 -l.05E-03 6.93E-03 2.22E-02 u CF ONS-6 411037021 11/16/2016 I-131 -4.03E-03 6.03E-03 1.67E-02 u CF NBF 411429012 11/23/2016 I-131 1.03E-03 3.95E-03 1.35E-02 u CF SBN 411429013 11/23/2016 I-131 6.80E-03 4.08E-03 1.57E-02 u CF DOW 411429014 11/23/2016 I-131 5.47E-03 4.73E-03 l.71E-02 u CF COL 411429015 11/23/2016 I-131 -6.06E-04 2.26E-03 6.50E-03 u CF ONS-1 411429016 11/23/2016 I-131 -2.44E-04 4.38E-03 1.46E-02 u CF ONS-2 411429017 11123/2016 I-131 3.28E-03 3.96E-03 1.44E-02 u CF ONS-3 411429018 11/23/2016 I-131 2.05E-03 4.62E-03 1.58E-02 u CF ONS-4 411429019 11123/2016 I-131 6.lOE-03 3.70E-03 1.37E-02 u CF ONS-5 411429020 11123/2016 I-131 -3.74E-03 3.87E-03 1.12E-02 u CF ONS-6 411429021 11/23/2016 I-131 1.45E-03 4.19E-03 1.27E-02 u CF NBF 411698012 11130/2016 I-131 -2.80E-03 3.23E-03 8.20E-03 u CF SBN 411698013 11/30/2016 I-131 -2.38E-03 2.54E-03 5.26E-03 u CF DOW 411698014 11/30/2016 I-131 l.21E-04 2.61E-03 8.88E-03 u CF COL 411698015 11130/2016 I-131 -l.61E-03 5.51E-03 1.76E-02 u CF ONS-1 411698016 11/30/2016 I-131 3.67E-03 6.42E-03 2.30E-02 u CF ONS-2 411698017 11130/2016 I-131 l.73E-03 2.93E-03 1.14E-02 u CF ONS-3 411698018 11/30/2016 I-131 5.63E-03 3.89E-03 1.57E-02 u CF ONS-4 411698019 11/30/2016 I-131 -7.04E-03 8.52E-03 2.37E-02 u CF ONS-5 411698020 11130/2016 I-131 -l.06E-02 5.21E-03 7.55E-03 u CF ONS-6 411698021 11/30/2016 I-131 5.23E-03 4.76E-03 1.89E-02 u CF NBF 412404012 1217/2016 I-131 -4.64E-03 4.14E-03 l.09E-02 u CF SBN 412404013 1217/2016 I-131 8.78E-04 6.22E-03 2.15E-02 u CF DOW 412404014 1217/2016 I-131 -2.16E-03 5.52E-03 l.69E-02 u CF COL 412404015 1217/2016 I-131 1.36E-04 5.00E-03 1.65E-02 u CF ONS-1 412404016 1217/2016 I-131 -2.90E-04 4.23E-03 1.42E-02 u CF ONS-2 412404017 1217/2016 I-131 5.07E-03 3.34E-03 1.46E-02 u CF ONS-3 412404018 1217/2016 I-131 -3.05E-03 5.84E-03 1.88E-02 u CF ONS-4 412404019 1217/2016 I-131 -3.16E-03 3.48E-03 8.41E-03 u CF ONS-5 412404020 1217/2016 I-131 -3.77E-03 6.51E-03 l.93E-02 u CF ONS-6 412404021 1217/2016 I-131 4.23E-03 4.14E-03 1.60E-02 u CF NBF 412897012 12/14/2016 I-131 -4.57E-03 4.39E-03 l.llE-02 u CF SBN 412897013 12/14/2016 I-131 -5.56E-03 6.07E-03 1.46E-02 u CF DOW 412897014 12/14/2016 I-131 -9.69E-04 6.38E-03 2.09E-02 u CF COL 412897015 12/14/2016 I-131 -1.33E-03 4.70E-03 1.37E-02 u CF ONS-1 412897016 12/14/2016 I-131 -l.75E-03 4.06E-03 1.28E-02 u CF ONS-2 412897017 12/14/2016 I-131 6.04E-04 5.40E-03 1.80E-02 u CF ONS-3 412897018 12/14/2016 I-131 -1.59E-03 4.96E-03 1.58E-02 u CF ONS-4 412897019 12/14/2016 I-131 l.65E-03 3.29E-03 1.20E-02 u CF ONS-5 412897020 12/14/2016 I-131 8.40E-03 5.31E-03 2.05E-02 u CF ONS-6 412897021 12/14/2016 I-131 -4.49E-05 2.31E-03 7.67E-03 u CF NBF 413336012 12/21/2016 I-131 7.41E-03 4.70E-03 l.79E-02 u D-43 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/rn3)

CF SBN 413336013 12/21/2016 I-131 6.60E-03 5.82E-03 2.24E-02 u CF DOW 413336014 12/21/2016 I-131 -4.36E-03 3.80E-03 8.51E-03 u CF COL 413336015 12/21/2016 I-131 -l.25E-02 5.98E-03 8.92E-03 u CF ONS-1 413336016 12/21/2016 1-131 -l.04E-02 8.44E-03 2.05E-02 u CF ONS-2 413336017 12/21/2016 1-131 -7.20E-03 4.33E-03 6.66E-03 u CF ONS-3 413336018 12/21/2016 I-131 9.46E-03 9.18E-03 3.49E-02 u CF ONS-4 413336019 12/21/2016 I-131 -3.31E-03 3.57E-03 8.52E-03 u CF ONS-5 413336020 12/21/2016 I-131 -l.69E-02 l.03E-02 2.16E-02 u CF ONS-6 413336021 12/21/2016 I-131 -l.84E-03 3.91E-03 l.20E-02 u CF NBF 413521012 12/28/2016 I-131 -3.67E-03 8.44E-03 2.59E-02 u CF SBN 413521013 12/28/2016 I-131 5.BE-03 6.48E-03 2.43E-02 u CF DOW 413521014 12/28/2016 I-131 3.06E-04 4.BE-03 l.43E-02 u CF COL 413521015 12/28/2016 I-131 -9.40E-04 5.22E-03 l.73E-02 u CF ONS-1 413521016 12/28/2016 I-131 -2.84E-03 6.83E-03 2.04E-02 u CF ONS-2 413521017 12/28/2016 I-131 5.70E-03 5.85E-03 2.23E-02 u CF ONS-3 413521018 12/28/2016 I-131 -1.52E-02 6.62E-03 7.43E-03 u CF ONS-4 413521019 12/28/2016 I-131 -4.69E-03 3.9IE-03 9.66E-03 u CF ONS-5 413521020 12/28/2016 I-131 -2.77E-03 5.08E-03 l.44E-02 u CF ONS-6 413521021 12/28/2016 I-131 -l.69E-03 4.35E-03 l.37E-02 u D-44 Donald C. Gook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH TRI-FOREBAY393360001 3/14/2016 Ac-228 5.61E-01 1.14E+Ol 3.83E+Ol u FH TRT-FOREBAY393360001 3/14/2016 Ag-108m 5.26E+OO 2.51E+OO 7.98E+OO u FH TRI-FOREBAY393360001 3/14/2016 Ag-llOm 1.85E+OO 3.40E+OO 1.15E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Ba-140 -2.89E+OO 1.37E+Ol 3.90E+Ol u FH TRI-FOREBA Y393360001 3/14/2016 Be-7 -3.30E+OO l.96E+Ol 6.56E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Ce-141 3.82E+OO 4.51E+OO l.36E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Ce-144 -6.26E+OO I.57E+Ol 4.55E+Ol u FH TRT-FOREBAY393360001 3/14/2016 Co-57 4.40E-01 1.83E+OO 5.51E+OO u FH TRT-FOREBAY393360001 3/14/2016 Co-58 3.86E+OO 3.02E+OO 9.33E+OO u FH TRI-FOREBAY393360001 3/14/2016 Co-60 -2.85E+OO 3.19E+OO 9.54E+OO u FH TRI-FOREBAY393360001 3/14/2016 Cr-51 -2.50E+Ol 2.57E+Ol 7.76E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Cs-134 6.26E-01 3.60E+OO 1.13E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Cs-137 1.79E+Ol 4.72E+OO 8.89E+OO M FH TRT-FOREBAY393360001 3/14/2016 Fe-59 4.46E+OO 7.00E+OO 2.41E+Ol u FH TRI-FOREBAY393360001 3/14/2016 1-131 4.61E+OO 4.66E+OO l.55E+Ol u FH TRI-FOREBAY393360001 3/14/2016 K-40 2.55E+03 1.69E+02 7.48E+Ol FH TRI-FOREBAY393360001 3/14/2016 La-140 -l.45E+OO 2.70E+OO 7.79E+OO u FH TRI-FOREBAY393360001 3/14/2016 Mn-54 1.08E+OO 2.54E+OO 8.52E+OO u FH TRI-FOREBAY393360001 3/14/2016 Nb-95 7.93E-Ol 3.20E+OO 1.05E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Ru-103 1.69E+OO 2.64E+OO 9.lOE+OO u FH TRI-FOREBAY393360001 3/14/2016 Ru-106 -1.12E+Ol 2.32E+Ol 7.45E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Sb-124 -3.86E-01 5.78E+OO 1.87E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Sb-125 3.71E+OO 6.19E+OO l.82E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Se-75 -4.06E+OO 3.43E+OO l.02E+Ol u FH TRI-FOREBA ¥393360001 3/14/2016 Th-228 2.36E+OO 4.53E+OO l.52E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Zn-65 1.49E-01 6.40E+OO 2.15E+Ol u FH TRI-FOREBAY393360001 3/14/2016 Zr-95 -l.93E+OO 4.65E+OO 1.48E+Ol u FH OFS-N 398213001 5/24/2016 Ac-228 -l.29E+Ol 9.18E+OO 2.29E+Ol u FH OFS-N 398213001 5/24/2016 Ag-108m -1.27E+OO 1.42E+OO 4.45E+OO u FH OFS-N 398213001 5/24/2016 Ag-llOm -2.99E+OO 2.32E+OO 6.83E+OO u FH OFS-N 398213001 5/24/2016 Ba-140 -5.62E+OO 7.95E+OO 2.48E+Ol u FH OFS-N 398213001 5/2412016 Be-7 -1.78E+Ol 1.34E+Ol 3.98E+Ol u FH OFS-N 398213001 5/24/2016 Ce-141 -l.45E+OO 2.26E+OO 7.36E+OO u FH OFS-N 398213001 5/24/2016 Ce-144 -l.71E+Ol 1.03E+Ol 2.67E+Ol u FH OFS-N 398213001 5/24/2016 Co-57 8.55E-02 1.07E+OO 3.60E+OO u FH OFS-N 398213001 5/24/2016 Co-58 -5.91E-Ol l.91E+OO 5.29E+OO u FH OFS-N 398213001 5/24/2016 Co-60 2.97E+OO 2.14E+OO 7.03E+OO u FH OFS-N 398213001 5/24/2016 Cr-51 -l.96E+Ol 1.44E+Ol 4.45E+Ol u FH OFS-N 398213001 5/24/2016 Cs-134 -1.40E+OO 1.98E+OO 5.56E+OO u FH OFS-N 398213001 5/24/2016 Cs-137 1.14E+Ol 2.34E+OO 5.57E+OO M FH OFS-N 398213001 5/24/2016 Fe-59 -2.31E+OO 4.25E+OO 1.38E+Ol u FH OFS-N 398213001 5/24/2016 I-131 2.20E+OO 2.86E+OO 9.57E+OO u FH OFS-N 398213001 5/24/2016 K-40 3.14E+03 1.57E+02 3.42E+Ol FH OFS-N 398213001 5/24/2016 La-140 2.22E+OO 2.77E+OO 9.50E+OO u FH OFS-N 398213001 5/24/2016 Mn-54 -8.52E-01 1.71E+OO 5.49E+OO u FH OFS-N 398213001 5/24/2016 Nb-95 2.29E+OO 1.75E+OO 5.75E+OO u FH OFS-N 398213001 5/24/2016 Ru-103 l.96E+OO 1.81E+OO 5.18E+OO u FH OFS-N 398213001 5/24/2016 Ru-106 -l.73E+Ol 1.42E+Ol 4.38E+Ol u FH OFS-N 398213001 5/2412016 Sb-124 5.00E-01 4.00E+OO 1.14E+Ol u FH OFS-N 398213001 5/24/2016 Sb-125 -2.96E+OO 4.08E+OO 1.30E+Ol u 0-45 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH OFS-N 398213001 5/24/2016 Se-75 7.55E-02 l.90E+OO 6.13E+OO U FH OFS-N 398213001 5/24/2016 Th-228 7.99E+OO 4.90E+OO 9.40E+OO U FH OFS-N 398213001 5/24/2016 Zn-65 -6.74E+OO 4.70E+OO l.39E+Ol U FH OFS-N 398213001 5/24/2016 Zr-95 l.llE-01 2.88E+OO 9.53E+OO U FH ONS-N 398213002 5/24/2016 Ac-228 -6.0SE+OO 6.22E+OO l.39E+Ol U FH ONS-N 398213002 5/24/2016 Ag-108m -7.29E-01 9.22E-Ol 2.85E+OO U FH ONS-N 398213002 5/24/2016 Ag-llOm -2.0SE+OO l.62E+OO 4.09E+OO U FH ONS-N 398213002 5/24/2016 Ba-140 6.05E+OO 5.68E+OO l.89E+Ol U FH ONS-N 398213002 5/24/2016 Be-7 -2.85E-01 8.32E+OO 2.SOE+Ol U FH ONS-N 398213002 5/24/2016 Ce-141 4.69E+OO 2.13E+OO 5.91E+OO U FH ONS-N 398213002 5/24/2016 Ce-144 1.31E+OO 6.05E+OO 2.03E+Ol U FH ONS-N 398213002 5/24/2016 Co-57 -4.02E-01 8.04E-Ol 2.67E+OO U FH ONS-N 398213002 5/24/2016 Co-58 l.93E+OO l.13E+OO 3.48E+OO U FH ONS-N 398213002 5/24/2016 Co-60 -6.95E-Ol l.lOE+OO 3.54E+OO U FH ONS-N 398213002 5/24/2016 Cr-51 -9.95E+OO l.OlE+Ol 3.12E+Ol U FH ONS-N 398213002 5/24/2016 Cs-134 2.54E+OO l.24E+OO 3.59E+OO U FH ONS-N 398213002 5/24/2016 Cs-137 -7.20E-Ol l.OlE+OO 3.23E+OO U FH ONS-N 398213002 5/24/2016 Fe-59 -8.76E-Ol 2.42E+OO 8.05E+OO U FH ONS-N 398213002 5/24/2016 I-131 -2.89E+OO 2.44E+OO 7.40E+OO U FH ONS-N 398213002 5/24/2016 K-40 2.14E+03 l.04E+02 2.84E+Ol FH ONS-N 398213002 5/24/2016 La-140 -2.82E+OO 2.15E+OO 5.19E+OO u FH ONS-N 398213002 5/24/2016 Mn-54 l.73E+OO l.09E+OO 3.43E+OO u FH ONS-N 398213002 5/24/2016 Nb-95 l.20E+OO l.08E+OO 3.52E+OO u FH ONS-N 398213002 5/24/2016 Ru-103 7.48E-01 l.04E+OO 3.48E+OO u .FH ONS-N 398213002 5/24/2016 Ru-106 -4.04E+OO 8.81E+OO 2.88E+Ol u FH ONS-N 398213002 5/24/2016 Sb-124 -8.SOE-04 2.34E+OO 7.66E+OO u FH ONS-N 398213002 5/24/2016 Sb-125 -1.0SE+OO 2.63E+OO 8.31E+OO u FH ONS-N 398213002 5/24/2016 Se-75 -l.94E+OO l.59E+OO 4.24E+OO u FH ONS-N 398213002 5/24/2016 Th-228 -4.40E+OO 2.93E+OO 6.20E+OO u FH ONS-N 398213002 5/24/2016 Zn-65 l.09E-Ol 2.68E+OO 7.SOE+OO u FH ONS-N 398213002 5/24/2016 Zr-95 -l.49E+OO l.75E+OO 5.50E+OO u FH ONS-S 398213003 5/24/2016 Ac-228 -4.66E+OO 7.21E+OO l.84E+Ol u FH ONS-S 398213003 5/24/2016 Ag-108m -6.51E-Ol l.14E+OO 3.58E+OO u FH ONS-S 398213003 5/24/2016 Ag-llOm -l.28E+OO l.96E+OO 5.79E+OO u FH ONS-S 398213003 5/24/2016 Ba-140 9.04E-01 6.82E+OO 2.29E+OI u FH ONS-S 398213003 5/24/2016 Be-7 -5.0lE+OO l.07E+OI 3.55E+OI u FH ONS-S 398213003 5/24/2016 Ce-141 -5.69E-01 2.23E+OO 7.18E+OO u FH ONS-S 398213003 5/24/2016 Ce-144 8.70E+OO 7.94E+OO 2.62E+Ol u FH ONS-S 398213003 5/24/2016 Co-57 -9.25E-Ol l.02E+OO 3.33E+OO u FH ONS-S 398213003 5/24/2016 Co-58 1.84E+OO l.35E+OO 4.37E+OO u FH ONS-S 398213003 5/24/2016 Co-60 9.92E-Ol l.53E+OO 5.14E+OO u FH ONS-S 398213003 5/24/2016 Cr-51 7.47E+OO l.26E+OI 4.lOE+OI u FH ONS-S 398213003 5/24/2016 Cs-134 -5.67E-01 l.37E+OO 4.42E+OO u FH ONS-S 398213003 5/24/2016 Cs-137 6.63E+OO 2.07E+OO 4.llE+OO M FH ONS-S 398213003 5/24/2016 Fe-59 -8.62E-Ol 3.15E+OO l.05E+OI u FH ONS-S 398213003 5/24/2016 I-131 -2.75E-Ol 2.72E+OO 8.76E+OO u FH ONS-S 398213003 5/24/2016 K-40 3.16E+03 l.52E+02 3.82E+Ol FH ONS-S 398213003 5/24/2016 La-140 6.59E-01 2.lOE+OO 6.99E+OO U FH ONS-S 398213003 5/24/2016 Mn-54 -9.47E-Ol l.24E+OO 3.90E+OO U FH ONS-S 398213003 5/24/2016 Nb-95 l.OSE+OO 1.35E+OO 4.46E+OO U D-46 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH ONS-S 398213003 5/24/2016 Ru-103 -l.51E+OO 1.45E+OO 3.96E+OO u FH ONS-S 398213003 5/24/2016 Ru-106 -8.60E+OO 1.12E+Ol 3.59E+Ol u FH ONS-S 398213003 5/24/2016 Sb-124 -7.46E-01 2.72E+OO 8.73E+OO u FH ONS-S 398213003 5/24/2016 Sb-125 l.27E+OO 3.51E+OO l.13E+Ol u FH ONS-S 398213003 5/24/2016 Se-75 -3.31E+OO l.84E+OO 5.25E+OO u FH ONS-S 398213003 5/24/2016 Th-228 5.41E+OO 4.22E+OO 8.26E+OO u FH ONS-S 398213003 5/24/2016 Zn-65 -l.82E-01 3.21E+OO 1.08E+Ol u FH ONS-S 398213003 5/24/2016 Zr-95 -l.27E-02 2.32E+OO 7.65E+OO u FH OFS-S 398213004 5/24/2016 Ac-228 9.07E-01 6.03E+OO l.43E+Ol u FH OFS-S 398213004 5/24/2016 Ag-108m l.29E-02 7.97E-01 2.62E+OO u FH OFS-S 398213004 5/24/2016 Ag-llOm 5.69E-01 l.23E+OO 4.14E+OO u FH OFS-S 398213004 5/24/2016 Ba-140 2.71E+OO 6.41E+OO l.67E+Ol u FH OFS-S 398213004 5/24/2016 Be-7 -6.43E+OO 8.12E+OO 2.55E+Ol u FH OFS-S 398213004 5/24/2016 Ce-141 8.53E-Ol 2.12E+OO 4.79E+OO u FH OFS-S 398213004 5/24/2016 Ce-144 -2.40E+OO 5.33E+OO l.70E+Ol u FH OFS-S 398213004 5/24/2016 Co-57 4.03E-01 6.80E-OI 2.21E+OO u FH OFS-S 398213004 5/24/2016 Co-58 l.57E+OO I.05E+OO 3.43E+OO u FH OFS-S 398213004 5/24/2016 Co-60 -3.ISE-01 1.lOE+OO 3.49E+OO u FI-I OFS-S 398213004 5/24/2016 Cr-51 7.39E-01 8.40E+OO 2.81E+OI u FH OFS-S 398213004 5/24/2016 Cs-134 -4.35E-01 9.89E-Ol 3.25E+OO u FH OFS-S 398213004 5/24/2016 Cs-137 l.81E+Ol l.78E+OO 3.36E+OO M FH OFS-S 398213004 5/24/2016 Fe-59 5.62E-02 2.37E+OO 7.76E+OO u FH OFS-S 398213004 5/24/2016 I-131 2.1 lE+OO 2.18E+OO 6.39E+OO u FH OFS-S 398213004 5/24/2016 K-40 2.81E+03 l.42E+02 2.76E+Ol FH OFS-S 398213004 5/24/2016 La-140 -l.35E+OO l.52E+OO 4.73E+OO u FH OFS-S 398213004 5/24/2016 Mn-54 3.66E-01 8.95E-01 3.0lE+OO u FH OFS-S 398213004 5/24/2016 Nb-95 3.14E+OO l.78E+OO 3.06E+OO UI FH OFS-S 398213004 5/24/2016 Ru-103 -l.30E+OO l.OOE+OO 3.00E+OO u FH OFS-S 398213004 5/24/2016 Ru-106 5.41E+OO 8.52E+OO 2.76E+Ol u FH OFS-S 398213004 5/24/2016 Sb-124 -2.15E+OO 2.20E+OO 5.52E+OO u FH OFS-S 398213004 5/24/2016 Sb-125 -2.49E+OO 2.44E+OO 7.61E+OO u FH OFS-S 398213004 5/24/2016 Se-75 2.82E+OO l.60E+OO 3.97E+OO u FH OFS-S 398213004 5/24/2016 Th-228 1.66E+OO 2.89E+OO 5.77E+OO u FH OFS-S 398213004 5/24/2016 Zn-65 5.55E+OO 3.12E+OO 8.59E+OO u FH OFS-S 398213004 5/24/2016 Zr-95 -4.02E-01 1.67E+OO 5.56E+OO u FH PCH-CNP 405197001 9/1/2016 Ac-228 -2.12E+Ol 9.50E+OO 2.18E+Ol u FH PCH-CNP 405197001 9/1/2016 Ag-108m -l.54E+OO 1.28E+OO 3.84E+OO u FH PCH-CNP 405197001 9/1/2016 Ag-llOm 2.00E+OO 2.14E+OO 7.20E+OO u FH PCH-CNP 405197001 9/1/2016 Ba-140 -9.58E+OO 7.55E+OO 2.20E+Ol u FH PCH-CNP 405197001 9/1/2016 Be-7 -3.26E+OO 1.41E+Ol 4.0lE+Ol u FH PCH-CNP 405197001 9/1/2016 Ce-141 -2.15E+OO 2.39E+OO 7.14E+OO u FH PCH-CNP 405197001 9/1/2016 Ce-144 -l.28E+Ol 9.0lE+OO 2.58E+Ol u FH PCH-CNP 405197001 9/1/2016 Co-57 -3.95E-OI 1.lOE+OO 3.43E+OO u FH PCH-CNP 405197001 9/1/2016 Co-58 l.77E+OO l.56E+OO 5.25E+OO u FH PCH-CNP 405197001 9/1/2016 Co-60 9.68E-OI 1.70E+OO 5.59E+OO u FH PCH-CNP 405197001 9/1/2016 Cr-51 5.88E+OO l.27E+OI 4.22E+Ol u FH PCH-CNP 405197001 9/1/2016 Cs-134 -9.42E-01 l.65E+OO 5.36E+OO u FH PCH-CNP 405197001 9/1/2016 Cs-137 2.07E+Ol 3.53E+OO 5.32E+OO M FH PCH-CNP 405197001 9/1/2016 Fe-59 -3.35E+OO 4.13E+OO 1.llE+Ol u FH PCH-CNP 405197001 9/1/2016 I-131 -3.0SE+OO 2.52E+OO 7.67E+OO u D-47 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH PCH-CNP 405197001 9/1/2016 K-40 3.37E+03 1.23E+02 3.92E+OI FH PCH-CNP 405197001 9/1/2016 La-140 -1.29E+OO 2.43E+OO 7.83E+OO u FH PCH-CNP 405197001 9/1/2016 Mn-54 -1.34E+OO 1.51E+OO 4.76E+OO u FH PCH-CNP 405197001 9/1/2016 Nb-95 1.21E+OO l.57E+OO 5.34E+OO u FH PCH-CNP 405197001 9/1/2016 Ru-103 3.42E-02 l.55E+OO 5.0IE+OO u FH PCH-CNP 405197001 9/1/2016 Ru-106 6.68E+OO l.39E+OI 4.46E+OI u FH PCH-CNP 405197001 9/1/2016 Sb-124 7.49E-OI 2.86E+OO 9.73E+OO u FH PCH-CNP 405197001 9/1/2016 Sb-125 3.08E+OO 3.85E+OO l.26E+Ol u FH PCH-CNP 405197001 9/1/2016 Se-75 5.13E+OO 2.67E+OO 5.78E+OO u FH PCH-CNP 405197001 9/1/2016 Th-228 -3.21E+OO 3.46E+OO 8.51E+OO u FH PCH-CNP 405197001 9/1/2016 Zn-65 l.22E+OO 3.76E+OO l.24E+OI u FH PCH-CNP 405197001 9/1/2016 Zr-95 -l.OOE-01 2.59E+OO 8.71E+OO u FH OFS-N 406683001 9/22/2016 Ac-228 -2.37E+Ol 1.25E+Ol 2.76E+OI u FH OFS-N 406683001 9/22/2016 Ag-108m 2.99E-01 2.09E+OO 6.37E+OO u FH OFS-N 406683001 9/22/2016 Ag-llOm l.59E+OI l.IOE+OI 1.26E+OI UI FH OFS-N 406683001 9/22/2016 Ba-140 -l.41E+OO 1.19E+Ol 3.91E+Ol u FH OFS-N 406683001 9/22/2016 Be-7 -3.14E+OI 2.0IE+OI 5.48E+OI u FH OFS-N 406683001 9/22/2016 Ce-141 -5.91E+OO 3.55E+OO 9.63E+OO u FH OFS-N 406683001 9/22/2016 Ce-144 1.19E+OI l.24E+Ol 4.12E+OI u FH OFS-N 406683001 9/22/2016 Co-57 -4.80E-01 l.66E+OO 5.37E+OO u FH OFS-N 406683001 9/22/2016 Co-58 3.0IE+OO 2.21E+OO 5.79E+OO u FH OFS-N 406683001 9/22/2016 Co-60 -3.14E+OO 2.61E+OO 6.91E+OO u FH OFS-N 406683001 9/22/2016 Cr-51 -3.25E-02 l.67E+OI 5.73E+OI u FH OFS-N 406683001 9/22/2016 Cs-134 5.94E-02 2.63E+OO 8.46E+OO u FH OFS-N 406683001 9/22/2016 Cs-137 2.97E+Ol 6.58E+OO 8.58E+OO M FH OFS-N 406683001 9/22/2016 Fe-59 4.06E-02 5.70E+OO l.92E+Ol u FH OFS-N 406683001 9/22/2016 l-131 2.56E+OO 4.33E+OO 1.50E+Ol u FH OFS-N 406683001 9/22/2016 K-40 3.91E+03 2.37E+02 8.33E+Ol FH OFS-N 406683001 9/22/2016 La-140 -2.27E-01 3.36E+OO l.08E+Ol u FH OFS-N 406683001 9/22/2016 Mn-54 -2.22E+OO 2.51E+OO 7.13E+OO U. FH OFS-N 406683001 9/22/2016 Nb-95 l.72E+OO 2.66E+OO 8.94E+OO u FH OFS-N 406683001 9/22/2016 Ru-103 6.79E-01 2.04E+OO 6.94E+OO u FH OFS-N 406683001 9/22/2016 Ru-106 2.25E-02 l.88E+Ol 6.14E+OI u FH OFS-N 406683001 9/22/2016 Sb-124 4.90E-01 5.24E+OO l.72E+Ol u FH OFS-N 406683001 9/22/2016 Sb-125 -l.34E+OO 5.60E+OO l.85E+Ol u FH OFS-N 406683001 9/22/2016 Se-75 -2.00E+OO 3.12E+OO 9.28E+OO u FH OFS-N 406683001 9/22/2016 Th-228 5.46E+OO 5.93E+OO l.43E+Ol u FH OFS-N 406683001 9/22/2016 Zn-65 -l.91E+OO 7.lOE+OO 2.34E+Ol u FH OFS-N 406683001 9/22/2016 Zr-95 6.27E+OO 4.57E+OO l.57E+Ol u FH ONS-N 406683002 9/22/2016 Ac-228 -4.57E+OO 7.52E+OO 2.28E+Ol u FH ONS-N 406683002 9/22/2016 Ag-108m -l.64E-OI l.76E+OO 5.78E+OO u FH ONS-N 406683002 9/22/2016 Ag-llOm -7.71E+OO 3.77E+OO 8.08E+OO u FH ONS-N 406683002 9/22/2016 Ba-140 -7.74E+OO l.26E+Ol 3.92E+Ol u FH ONS-N 406683002 9/22/2016 Be-7 4.39E+OO l.83E+Ol 6.IOE+OI u FH ONS-N 406683002 9/22/2016 Ce-141 -3.31E+OO 3.23E+OO 9.28E+OO u FH ONS-N 406683002 9/22/2016 Ce-144 l.73E+Ol 1.15E+Ol 3.65E+Ol u FH ONS-N 406683002 9/22/2016 Co-57 l.39E+OO 1.53E+OO 4.93E+OO u FH ONS-N 406683002 9/22/2016 Co-58 -2.23E+OO 2.17E+OO 6.0IE+OO U FH ONS-N 406683002 9/22i2016 Co-60 l.IOE+OO 2.66E+OO 8.88E+OO U FH ONS-N 406683002 9/22/2016 Cr-51 1.05E+Ol l.70E+Ol 5.86E+Ol U D-48 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH ONS-N 406683002 9/22/2016 Cs-134 l.09E+OO 2.47E+OO 8.18E+OO u FH ONS-N 406683002 9/22/2016 Cs-137 2.99E+Ol 5.92E+OO 6.66E+OO M FH ONS-N 406683002 9/22/2016 Fe-59 8.82E-Ol 4.93E+OO l.68E+Ol u FH ONS-N 406683002 9/22/2016 I-131 -4.55E+OO 3.95E+OO l.18E+Ol u FH ONS-N 406683002 9/22/2016 K-40 3.30E+03 l.59E+02 4.09E+Ol FH ONS-N 406683002 9/22/2016 La-140 -4.84E+OO 3.09E+OO 6.29E+OO u FH ONS-N 406683002 9/22/2016 Mn-54 -8.07E-01 2.42E+OO 7.49E+OO u FH ONS-N 406683002 9/22/2016 Nb-95 -2.37E+OO 2.34E+OO 6.59E+OO u FH ONS-N 406683002 9/22/2016 Ru-103 -7.55E-01 2.25E+OO 7.21E+OO u FH ONS-N 406683002 9/22/2016 Ru-106 -2.96E-01 l.98E+Ol 6.43E+Ol u FH ONS-N 406683002 9/22/2016 Sb-124 3.18E+OO 4.70E+OO l.68E+Ol u FH ONS-N 406683002 9/22/2016 Sb-125 -8.53E+OO 5.12E+OO 1.34E+Ol u FH ONS-N 406683002 9/22/2016 Se-75 9.56E-01 2.29E+OO 7.87E+OO u FH ONS-N 406683002 9/22/2016 Th-228 8.94E-Ol 3.54E+OO 1.14E+Ol u FH ONS-N 406683002 9/22/2016 Zn-65 -2.08E+OO 5.77E+OO 1.82E+Ol u FH ONS-N 406683002 9/22/2016 Zr-95 -4.49E+OO 4.12E+OO 1.14E+Ol u FH ONS-S 406683003 9/21/2016 Ac-228 -7.24E+OO l.08E+Ol 3.35E+Ol u FH ONS-S 406683003 9/21/2016 Ag-108m -l.65E+OO l.90E+OO 5.86E+OO u FH ONS-S 406683003 9/21/2016 Ag-llOm 3.50E+OO 3.70E+OO 9.70E+OO u FH ONS-S 406683003 9/21/2016 Ba-140 -l.16E+Ol l.28E+Ol 3.80E+Ol u FH ONS-S 406683003 9/21/2016 Be-7 -3.53E+Ol 2.0lE+Ol 5.21E+Ol u FH ONS-S 406683003 9/21/2016 Ce-141 l.66E+OO 2.76E+OO 9.27E+OO u FH ONS-S 406683003 9/21/2016 Ce-144 2.34E+Ol 1.07E+Ol 3.42E+Ol u FH ONS-S 406683003 9/21/2016 Co-57 -3.16E-02 1.IOE+OO 3.67E+OO u FH ONS-S 406683003 9/21/2016 Co-58 -2.13E+OO 2.70E+OO 8.49E+OO u FH ONS-S 406683003 9/21/2016 Co-60 1.13E+OO 3.07E+OO l.02E+Ol u FH ONS-S 406683003 9/21/2016 Cr-51 -1.79E+OO 1.78E+Ol 6.08E+Ol u FH ONS-S 406683003 9/21/2016 Cs-134 7.67E-01 2.18E+OO 7.60E+OO u FH ONS-S 406683003 9/21/2016 Cs-137 1.23E+Ol 3.78E+OO 8.89E+OO M FH ONS-S 406683003 9/21/2016 Fe-59 6.81E+OO 5.67E+OO l.99E+Ol u FH ONS-S 406683003 9/21/2016 I-131 -1.97E-01 4.06E+OO 1.38E+Ol u FH ONS-S 406683003 9/21/2016 K-40 3.10E+03 1.64E+02 7.21E+Ol FH ONS-S 406683003 9/21/2016 La-140 5.05E-01 4.66E+OO l.71E+Ol u FH ONS-S 406683003 9/21/2016 Mn-54 -3.05E+OO 2.99E+OO 7.73E+OO u FH ONS-S 406683003 9/21/2016 Nb-95 -1.22E+OO 2.99E+OO 9.lOE+OO u FH ONS-S 406683003 9/21/2016 Ru-103 -2.02E+OO 1.90E+OO 5.50E+OO u FH ONS-S 406683003 9/21/2016 Ru-106 -5.19E+OO 1.91E+Ol 6.02E+Ol u FH ONS-S 406683003 9/21/2016 Sb-124 -2.73E+OO 6.04E+OO 1.88E+Ol u FH ONS-S 406683003 9/21/2016 Sb-125 -5.61E+OO 5.51E+OO 1.67E+Ol u FH ONS-S 406683003 9/21/2016 Se-75 1.14E+OO 2.83E+OO 9.05E+OO u FH ONS-S 406683003 9/21/2016 Th-228 -9.26E+OO 4.26E+OO 1.04E+Ol u FH ONS-S 406683003 9/21/2016 Zn-65 -3.58E+OO 6.36E+OO 1.98E+Ol u FH ONS-S 406683003 9/21/2016 Zr-95 2.49E+OO 4.61E+OO 1.52E+Ol u FH OFS-S 406683004 9/21/2016 Ac-228 1.36E+Ol 9.89E+OO 3.51E+Ol u FH OFS-S 406683004 9/21/2016 Ag-108m -2.48E-01 1.88E+OO 6.12E+OO u FH OFS-S 406683004 9/21/2016 Ag-llOm -1.21E+OO 3.72E+OO 1.00E+Ol u FH OFS-S 406683004 9/21/2016 Ba-140 -5.15E+OO 1.24E+Ol 3.89E+Ol u FH OFS-S 406683004 9/21/2016 Be-7 -3.1 lE+Ol 1.87E+Ol 4.80E+Ol u FH OFS-S 406683004 9/21/2016 Ce-141 l.58E+OO 3.26E+OO 1.13E+Ol u FH OFS-S 406683004 9/21/2016 Ce-144 -l.97E+Ol l.59E+Ol 4.44E+Ol u D-49 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) FH OFS-S 406683004 9121/2016 Co-57 3.30E+OO l.97E+OO 6.15E+OO u FH OFS-S 406683004 9/21/2016 Co-58 -2.74E+OO 2.18E+OO 5.63E+OO u FH OFS-S 406683004 9/21/2016 Co-60 2.17E+OO 2.45E+OO 8.03E+OO u FH OFS-S 406683004 9/21/2016 Cr-51 -l.92E+OO l.86E+Ol 6.18E+Ol u FH OFS-S 406683004 9/21/2016 Cs-134 4.46E+OO 2.54E+OO 8.75E+OO u FH OFS-S 406683004 9/21/2016 Cs-137 l.51E+Ol 5.19E+OO 7.36E+OO M FH OFS-S 406683004 9/21/2016 Fe-59 -8.22E+OO 5.62E+OO l.54E+Ol u FH OFS-S 406683004 9/21/2016 I-131 -6.39E+OO 4.93E+OO l.45E+Ol u FH OFS-S 406683004 9/21/2016 K-40 3.10E+03 l.60E+02 6.67E+Ol FH OFS-S 406683004 9/21/2016 La-140 -4.08E+OO 3.58E+OO 9.02E+OO u FH OFS-S 406683004 9/21/2016 Mn-54 7.12E-Ol 2.14E+OO 7.0lE+OO u FH OFS-S 406683004 9/21/2016 Nb-95 -l.63E+OO 2.43E+OO 7.19E+OO u FH OFS-S 406683004 9/21/2016 Ru-103 l.65E+OO l.87E+OO 6.45E+OO u FH OFS-S 406683004 9/21/2016 Ru-106 -3.72E+Ol 2.24E+Ol 5.63E+Ol u FH OFS-S 406683004 9/21/2016 Sb-124 -l.46E-01 4.41E+OO l.44E+Ol u FH OFS-S 406683004 9/21/2016 Sb-125 -l.48E+OO 5.81E+OO l.88E+Ol u FH OFS-S 406683004 9/21/2016 Se-75 -4.00E+OO 2.88E+OO 8.53E+OO u FH OFS-S 406683004 9/21/2016 Th-228 9.17E+OO 7.12E+OO l.42E+Ol u FH OFS-S 406683004 9/21/2016 Zn-65 4.05E+OO 5.76E+OO 2.0lE+Ol u FH OFS-S 406683004 9/21/2016 Zr-95 -3.13E+OO 4.13E+OO 1.20E+Ol u FH PCH-CNP 412364001 1217/2016 Ac-228 6.66E+OO l.93E+Ol 3.91E+Ol u FH PCH-CNP 412364001 1217/2016 Ag-108m -2.24E-Ol l.84E+OO 6.04E+OO u FH PCH-CNP 412364001 1217/2016 Ag-llOm -3.97E-01 3.31E+OO l.05E+Ol u FH PCH-CNP 412364001 1217/2016 Ba-140 -5.38E+OO 7.42E+Ol 2.43E+02 u FH PCH-CNP 412364001 1217/2016 Be-7 4.04E+Ol 3.41E+Ol 1.16E+02 u FH PCH-CNP 412364001 1217/2016 Ce-141 -1.14E+Ol 8.0lE+OO 2.45E+Ol u FH PCH-CNP 412364001 1217/2016 Ce-144 -l.87E+Ol l.57E+Ol 4.95E+Ol u FH PCH-CNP 412364001 1217/2016 Co-57 l.33E+OO 2.lOE+OO 7.28E+OO u FH PCH-CNP 412364001 1217/2016 Co-58 -2.42E+OO 3.88E+OO l.02E+Ol u FH PCH-CNP 412364001 1217/2016 Co-60 3.84E+OO 4.23E+OO 1.14E+Ol u FH PCH-CNP 412364001 1217/2016 Cr-51 l.94E+Ol 4.85E+Ol l.65E+02 u FH PCH-CNP 412364001 1217/2016 Cs-134 -l.50E+OO 3.08E+OO 8.29E+OO u FH PCH-CNP 412364001 1217/2016 Cs-137 5.80E+OO 3.07E+OO l.03E+Ol u FH PCH-CNP 412364001 1217/2016 Fe-59 -l.16E+Ol 1.06E+Ol 2.89E+Ol u FH PCH-CNP 412364001 1217/2016 I-131 2.29E+02 9.44E+Ol 3.01E+02 DL FH PCH-CNP 412364001 1217/2016 K-40 2.65E+03 1.45E+02 7.20E+Ol FH PCH-CNP 412364001 1217/2016 La-140 4.34E+OO l.56E+Ol 5.49E+Ol u FH PCH-CNP 412364001 1217/2016 Mn-54 3.16E+OO -3*.44E+OO 6.99E+OO u FH PCH-CNP 412364001 1217/2016 Nb-95 -5.llE+OO 3.91E+OO l.03E+Ol u FH PCH-CNP 412364001 1217/2016 Ru-103 -l.38E+OO 3.88E+OO l.09E+Ol u FH PCH-CNP 412364001 1217/2016 Ru-106 4.18E+Ol 2.59E+Ol 8.78E+Ol u FH PCH-CNP 412364001 1217/2016 Sb-124 -1.79E+Ol 8.92E+OO 1.45E+Ol u FH PCH-CNP 412364001 1217/2016 Sb-125 -5.23E+OO 5.58E+OO l.68E+Ol u FH PCH-CNP 412364001 1217/2016 Se-75 3.09E+OO 3.62E+OO l.24E+Ol u FH PCH-CNP 412364001 1217/2016 Th-228 -8.84E+OO 4.70E+OO l.26E+Ol u FH PCH-CNP 412364001 1217/2016 Zn-65 -5.83E+OO 5.29E+OO 1.39E+Ol u FH PCH-CNP 412364001 1217/2016 Zr-95 9.16E+OO 8.26E+OO l.93E+Ol u D-50 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE SL-2 395504001 4/15/2016 Ac-228 l.73E+02 1.12E+02 1.99E+02 u SE SL-2 395504001 4/15/2016 Ag-108m -3.07E+OO 8.05E+OO 2.77E+Ol u SE SL-2 395504001 4/15/2016 Ag-llOm 5.91E+Ol 2.54E+Ol 5.91E+Ol u SE SL-2 395504001 4/15/2016 Ba-140 -8.63E+Ol 7.99E+Ol 2.50E+02 u SE SL-2 395504001 4/15/2016 Be-7 3.39E+Ol 9.40E+Ol 3.33E+02 u SE SL-2 395504001 4/15/2016 Ce-141 3.58E+Ol 1.71E+Ol 5.78E+Ol u SE SL-2 395504001 4115/2016 Ce-144 -7.73E+Ol 4.92E+Ol 1.56E+02 u SE SL-2 395504001 4/15/2016 Co-57 -1.09E+OO 5.58E+OO 2.03E+Ol u SE SL-2 395504001 4/15/2016 Co-58 -7.26E+OO 9.17E+OO 2.92E+Ol u SE SL-2 395504001 4/15/2016 Co-60 4.55E+OO l.16E+Ol 3.48E+Ol u SE SL-2 395504001 4/15/2016 Cr-51 -l.39E+02 9.47E+Ol 2.98E+02 u SE SL-2 395504001 4115/2016 Cs-134 1.73E+Ol 1.20E+Ol 4.32E+Ol u SE SL-2 395504001 4/15/2016 Cs-137 -2.83E+OO l.19E+Ol 3.40E+Ol u SE SL-2 395504001 4/15/2016 Fe-59 2.27E+Ol 2.86E+Ol l.OOE+02 u SE SL-2 395504001 4/15/2016 I-131 -6.lOE+Ol 3.17E+Ol 9.06E+Ol u SE SL-2 395504001 4/15/2016 K-40 6.04E+03 4.62E+02 2.87E+02 SE SL-2 395504001 4/15/2016 La-140 9.88E+OO 2.06E+Ol 7.33E+Ol u SE SL-2 395504001 4/15/2016 Mn-54 9.19E+OO 1.08E+Ol 3.89E+Ol u SE SL-2 395504001 4/15/2016 Nb-95 5.56E+OO 1.28E+Ol 3.98E+Ol u SE SL-2 395504001 4/15/2016 Ru-103 3.78E+OO 1.44E+Ol 3.54E+Ol u SE SL-2 395504001 4/15/2016 Ru-106 -1.76E+Ol 8.17E+Ol 2.74E+02 u SE SL-2 395504001 4/15/2016 Sb-124 1.61E+Ol 2.32E+Ol 8.39E+OI u SE SL-2 395504001 4/15/2016 Sb-125 -4.47E+OO 2.25E+Ol 7.85E+Ol u SE SL-2 395504001 4/15/2016 Se-75 1.82E+OO 9.92E+OO 3.47E+Ol u SE SL-2 395504001 4/15/2016 Th-228 1.57E+02 2.73E+Ol 5.lOE+Ol SE SL-2 395504001 4/15/2016 Zn-65 -4.58E+OO 2.70E+OI 7.45E+OI u SE SL-2 395504001 4/15/2016 Zr-95 -1.68E+OO 1.94E+OI 6.43E+OI u SE SL-3 395504002 4/15/2016 Ac-228 3.26E+02 7.09E+OI 1.28E+02 SE SL-3 395504002 4/15/2016 Ag-108m 5.12E+OO 7.31E+OO 2.62E+OI u SE SL-3 395504002 4/15/2016 Ag-llOm -3.68E+OO 1.13E+OI 3.70E+OI u SE SL-3 395504002 4115/2016 Ba-140 -8.81E+Ol 7.33E+OI 2.23E+02 u SE SL-3 395504002 411512016 Be-7 -3.lOE+OI 8.34E+OI 2.82E+02 u SE SL-3 395504002 4/15/2016 Ce-141 -1.40E+Ol 1.45E+Ol 4.79E+OI u SE SL-3 395504002 4/15/2016 Ce-144 8.45E+OO 4.60E+Ol l.71E+02 u SE SL-3 395504002 4/15/2016 Co-57 -3.33E+OO 5.94E+OO 2.16E+Ol u SE SL-3 395504002 4/15/2016 Co-58 -3.89E-02 1.05E+OI 3.60E+OI u SE SL-3 395504002 4/15/2016 Co-60 -3.46E+OO 9.52E+OO 3.06E+OI u SE SL-3 395504002 4/15/2016 Cr-51 -l.39E+02 1.03E+02 3.33E+02 u SE SL-3 395504002 4/15/2016 Cs-134 2.26E+Ol 1.55E+Ol 4.30E+Ol u SE SL-3 395504002 4/15/2016 Cs-137 l.09E+Ol 1.06E+Ol 3.80E+Ol u SE SL-3 395504002 4/15/2016 Fe-59 3.48E+OO 2.48E+Ol 8.56E+Ol u SE SL-3 395504002 4/15/2016 I-131 -9.43E+OO 2.75E+Ol 9.61E+Ol u SE SL-3 395504002 4/15/2016 K-40 6.46E+03 4.78E+02 3.63E+02 SE SL-3 395504002 4/15/2016 La-140 2.60E+Ol 1.97E+Ol 7.36E+Ol u SE SL-3 395504002 4/15/2016 Mn-54 -2.60E+OO 9.62E+OO 3.21E+Ol u SE SL-3 395504002 4/15/2016 Nb-95 -4.83E+OO 1.04E+Ol 3.45E+Ol u SE SL-3 395504002 4/15/2016 Ru-103 -1.19E+OI l.OOE+OI 3.06E+OI u SE SL-3 395504002 4/15/2016 Ru-106 2.53E+Ol 7.92E+Ol 2.83E+02 u SE SL-3 395504002 4/15/2016 Sb-124 1.26E+Ol 1.97E+Ol 7.IOE+Ol u SE SL-3 395504002 4/15/2016 Sb-125 -1.09E+OI 2.38E+Ol 8.llE+OI u D-51 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE SL-3 395504002 4/15/2016 Se-75 5.90E+OO l.08E+Ol 3.82E+Ol u SE SL-3 395504002 4/15/2016 Tu-228 2.64E+02 2.91E+Ol 4.60E+Ol SE SL-3 395504002 4/15/2016 Zn-65 l.69E+OO 2.70E+Ol 7.95E+Ol u SE SL-3 395504002 4/15/2016 Zr-95 . -4.56E+OO l.81E+Ol 6.13E+Ol u SE SL-2 408215001 10/12/2016 Ac-228 2.25E+02 7.26E+Ol 1.74E+02 ill SE SL-2 408215001 10/12/2016 Ag-108m -l.06E+Ol 5.83E+OO 1.59E+Ol u SE SL-2 408215001 10/12/2016 Ag-llOm -l.19E+Ol l.14E+Ol 2.65E+Ol u SE SL-2 408215001 10/12/2016 Ba-140 -l.94E+OI 9.84E+Ol 3.38E+02 u SE SL-2 408215001 10/12/2016 Be-7 -4.49E+OI 7.42E+Ol 2.48E+02 u SE SL-2 408215001 10/12/2016 Ce-141 -l.22E+Ol l.45E+Ol 4.33E+OI u SE SL-2 408215001 10/12/2016 Ce-144 -3.24E+Ol 3.48E+Ol l.16E+02 u SE SL-2 408215001 10/12/2016 Co-57 2.31E+OO 4.09E+OO l.52E+OI u SE SL-2 408215001 10/12/2016 Co-58 -l.15E+Ol 8.23E+OO 2.lOE+Ol u SE SL-2 408215001 10/12/2016 Co-60 7.13E+OO 8.65E+OO 3.12E+Ol u SE SL-2 408215001 10/12/2016 Cr-51 6.84E+02 2.02E+02 2.60E+02 UI SE SL-2 408215001 10/12/2016 Cs-134 l.94E+Ol 8.90E+OO 3.15E+Ol u SE SL-2 408215001 10/12/2016 Cs-137 l.65E+Ol 8.97E+OO 3.17E+OI u SE SL-2 408215001 10/12/2016 Fe-59 2.76E+OI 2.44E+Ol 8.85E+OI u SE SL-2 408215001 10/12/2016 1-131 l.31E+02 6.37E+Ol 2.29E+02 u SE SL-2 408215001 10/12/2016 K-40 5.45E+03 4.28E+02 2.39E+02 SE SL-2 408215001 10/12/2016 La-140 -4.60E+Ol 3.24E+Ol 7.15E+OI u SE SL-2 408215001 10/12/2016 Mn-54 -l.45E-01 8.81E+OO 2.32E+Ol u SE SL-2 408215001 10/12/2016 Nb-95 O.OOE+OO O.OOE+OO 2.75E+Ol u SE SL-2 408215001 10112/2016 Ru-103 -3.37E-01 9.71E+OO 3.41E+Ol u SE SL-2 408215001 10/12/2016 Ru-106 2.90E+Ol 6.34E+Ol 2.25E+02 u SE SL-2 408215001 10/12/2016 Sb-124 3.65E+Ol 2.29E+Ol 8.74E+Ol u SE SL-2 408215001 10/12/2016 Sb-125 -7.97E+OO l.67E+Ol 5.72E+Ol u SE SL-2 408215001 10/12/2016 Se-75 -2.65E+OO 9.76E+OO 3.24E+Ol u SE SL-2 408215001 10/12/2016 Tu-228 7.84E+Ol 2.83E+Ol 4.45E+Ol SE SL-2 408215001 10/12/2016 Zn-65 -l.21E+Ol 2.07E+Ol 6.71E+Ol u SE SL-2 408215001 10/12/2016 Zr-95 -l.35E+OI l.79E+Ol 5.51E+Ol u SE SL-3 408215002 10/12/2016 Ac-228 1.46E+02 4.38E+Ol 9.13E+Ol SE SL-3 408215002 10/12/2016 Ag-108m 4.88E+OO 4.76E+OO l.67E+OI u SE SL-3 408215002 10112/2016 Ag-llOm -2.06E+Ol l.32E+Ol 2.71E+Ol u SE SL-3 408215002 10/12/2016 Ba-140 -l.94E+Ol 7.30E+Ol 2.55E+02 u SE SL-3 408215002 10/12/2016 Be-7 -6.67E+Ol 6.71E+Ol 2.06E+02 u SE SL-3 408215002 10/12/2016 Ce-141 -7.26E-OI l.29E+OI 4.50E+OI u SE SL-3 408215002 10/12/2016 Ce-144 2.73E+Ol 3.15E+Ol l.14E+02 u SE SL-3 408215002 10/12/2016 Co-57 -7.99E-01 4.50E+OO 1.60E+Ol u SE SL-3 408215002 10/12/2016 Co-58 2.03E-01 7.47E+OO 2.52E+Ol u SE SL-3 408215002 10/12/2016 Co-60 -7.73E+OO 6.25E+OO 1.74E+OI u SE SL-3 408215002 10/12/2016 Cr-51 -7.50E+OI 7.91E+Ol 2.60E+02 u SE SL-3 408215002 10/12/2016 Cs-134 -3.98E+OO 6.82E+OO 2.18E+Ol u SE SL-3 408215002 10/12/2016 Cs-137 -l.41E+OO 6.44E+OO 2.19E+OI u SE SL-3 408215002 10/12/2016 Fe-59 -3.92E+OI 2.26E+Ol 4.91E+OI u SE SL-3 408215002 10/12/2016 1-131 2.16E+OI 4.78E+OI 1.69E+02 u SE SL-3 408215002 10112/2016 K-40 5.41E+03 3.12E+02 l.98E+02 SE SL-3 408215002 10/12/2016 La-140 3.35E+OI 2.84E+OI l.02E+02 u SE SL-3 408215002 10/12/2016 Mn-54 -l.95E+OO 8.lOE+OO 2.36E+Ol U SE SL-3 408215002 10/12/2016 Nb-95 9.92E+OO 9.85E+OO 3.07E+OI U D-52 Donald C. Cook Nuclear Plant Annual Radiologicai Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) SE SL-3 408215002 10/12/2016 Ru-103 -2.62E+OO 7.22E+OO 2.53E+Ol u SE SL-3 408215002 10/12/2016 Ru-106 -6.09E+OO 5.53E+Ol 1.92E+02 u SE SL-3 408215002 10/12/2016 Sb-124 8.38E+OO 1.71E+Ol 5.98E+Ol u SE SL-3 408215002 10/12/2016 Sb-125 -l.77E+OO l.60E+Ol 5.38E+Ol u SE SL-3 408215002 10/12/2016 Se-75 6.16E+OO 7.64E+OO 2.81E+OI u SE SL-3 408215002 10/12/2016 Th-228 9.81E+Ol 3.33E+Ol 5.78E+Ol ur SE SL-3 408215002 10/12/2016 Zn-65 1.32E+Ol 1.59E+OI 4.97E+OI u SE SL-3 408215002 10/12/2016 Zr-95 1.84E+Ol 1.54E+Ol 5.39E+Ol u D-53 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TF ONS-G 405413008 9/6/2016 Ac-228 -4.66E+Ol 1.88E+Ol 3.17E+Ol u TF ONS-G 405413008 9/6/2016 Ag-108m 6.00E-01 1.97E+OO 6.41E+OO u TF ONS-G 405413008 9/6/2016 Ag-llOm 6.87E+OO 4.49E+OO l.lOE+Ol u TF ONS-G 405413008 9/6/2016 Ba-140 1.0lE+Ol 1.52E+Ol 3.65E+Ol u TF ONS-G 405413008 9/6/2016 Be-7 1.93E+02 3.66E+Ol 5.82E+Ol TF ONS-G 405413008 9/6/2016 Ce-141 -6.47E-01 2.89E+OO 9.74E+OO u TF ONS-G 405413008 9/6/2016 Ce-144 -2.40E+OO 1.07E+Ol 3.62E+Ol u TF ONS-G 405413008 9/6/2016 Co-57 l.50E+OO 1.43E+OO 4.81E+OO u TF ONS-G 405413008 9/6/2016 Co-58 -2.27E+OO 2.53E+OO 7.94E+OO u TF ONS-G 405413008 9/6/2016 Co-60 l.46E+OO 2.82E+OO 9.42E+OO u TF ONS-G 405413008 9/6/2016 Cr-51 -7.71E+OO 1.91E+Ol 6.15E+Ol u TF ONS-G 405413008 9/6/2016 Cs-134 -3.48E+OO 2.81E+OO 8.48E+OO u TF ONS-G 405413008 9/6/2016 Cs-137 6.02E+Ol 6.59E+OO 8.lOE+OO TF ONS-G 405413008 9/6/2016 Fe-59 -7.0lE+OO 5.70E+OO 1.66E+Ol u TF ONS-G 405413008 9/6/2016 I-131 3.37E+OO 4.32E+OO l.28E+Ol u TF ONS-G 405413008 9/6/2016 K-40 2.15E+03 1.36E+02 7.37E+Ol TF ONS-G 405413008 9/6/2016 La-140 -5.67E+OO 4.48E+OO l.21E+Ol u TF ONS-G 405413008 9/6/2016 Mn-54 -3.09E+OO 2.47E+OO 7.41E+OO u TF ONS-G 405413008 9/6/2016 Nb-95 1.27E+OO 2.59E+OO 8.84E+OO u TF ONS-G 405413008 9/6/2016 Ru-103 6.08E-01 2.35E+OO 7.61E+OO u TF ONS-G 405413008 9/6/2016 Ru-106 3.21E+Ol 2.40E+Ol 7.68E+Ol u TF ONS-G 405413008 9/6/2016 Sb-124 -3.46E+OO 4.72E+OO l.45E+Ol u TF ONS-G 405413008 9/6/2016 Sb-125 -1.32E+Ol 6.64E+OO 1.72E+Ol u TF ONS-G 405413008 9/6/2016 Se-75 4.08E+OO 2.64E+OO 8.57E+OO u TF ONS-G 405413008 9/6/2016 Th-228 -6.70E+OO 5.66E+OO l.39E+Ol U TF ONS-G 405413008 9/6/2016 Zn-65 -2.60E+OO 5.97E+OO 1.91E+Ol U TF ONS-G 405413008 9/6/2016 Zr-95 -3.03E+OO 4.lOE+OO 1.31E+Ol U TF ONS-G 405413009 9/6/2016 Ac-228 -2.13E+Ol l.12E+Ol 2.30E+Ol U TF ONS-G 405413009 9/6/2016 Ag-108m -6.85E-01 l.25E+OO 4.06E+OO U TF ONS-G 405413009 9/6/2016 Ag-llOm -1.35E+OO 2.21E+OO 7.18E+OO U TF ONS-G 405413009 9/6/2016 Ba-140 -l.30E+Ol 7.80E+OO 2.20E+Ol U TF ONS-G 405413009 9/6/2016 Be-7 l.78E+02 2.56E+Ol 3.93E+Ol TF ONS-G 405413009 9/6/2016 Ce-141 4.46E-01 1.70E+OO 5.65E+OO u TF ONS-G 405413009 9/6/2016 Ce-144 -9.03E+OO 6.46E+OO l.97E+Ol u TF ONS-G 405413009 9/6/2016 Co-57 2.56E+OO l.03E+OO 2.46E+OO UI TF ONS-G 405413009 9/6/2016 Co-58 6.58E-01 l.56E+OO 5.36E+OO u TF ONS-G 405413009 9/6/2016 Co-60 -1.78E+OO 2.03E+OO 6.12E+OO u TF ONS-G 405413009 9/6/2016 Cr-51 -1.83E+Ol 1.60E+Ol 3.90E+Ol u TF ONS-G 405413009 9/6/2016 Cs-134 -1.74E-Ol l.81E+OO 5.93E+OO u TF ONS-G 405413009 9/6/2016 Cs-137 1.64E+OO 1.88E+OO 6.lOE+OO u TF ONS-G 405413009 9/6/2016 Fe-59 1.44E+OO 4.06E+OO 1.35E+Ol u TF ONS-G 405413009 9/6/2016 I-131 -l.54E-01 2.28E+OO 7.72E+OO u TF ONS-G 405413009 9/6/2016 K-40 4.51E+03 1.56E+02 4.17E+Ol TF ONS-G 405413009 9/6/2016 La-140 1.45E+OO 1.87E+OO 6.56E+OO u TF ONS-G 405413009 9/6/2016 Mn-54 -1.80E+OO 1.60E+OO 4.97E+OO u TF ONS-G 405413009 9/6/2016 Nb-95 3.38E-Ol 2.30E+OO 5.37E+OO u TF ONS-G 405413009 9/6/2016 Ru-103 2.12E+OO l.50E+OO 4.93E+OO u TF ONS-G 405413009 9/6/2016 Ru-106 -l.42E+Ol 1.42E+Ol 4.28E+Ol u TF ONS-G 405413009 9/6/2016 Sb-124 7.45E-01 3.28E+OO 9.76E+OO u TF ONS-G 405413009 9/6/2016 Sb-125 -2.87E-01 3.55E+OO 1.19E+Ol u D-54 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TF ONS-G 405413009 9/6/2016 Se-75 -2.73E+OO l.79E+OO 5.00E+OO u TF ONS-G 405413009 9/6/2016 Th-228 1.3 lE+OO 4.35E+OO 7.95E+OO u TF ONS-G 405413009 9/6/2016 Zn-65 5.52E+OO 4.43E+OO 1.46E+Ol u TF ONS-G 405413009 9/6/2016 Zr-95 -l.28E+OO 2.70E+OO 8.31E+OO u TF OFS-G 405413010 9/6/2016 Ac-228 -2.35E+OO 7.42E+OO l.91E+Ol u TF OFS-G 405413010 9/6/2016 Ag-108m -2.74E-01 9.00E-01 3.0lE+OO u TF OFS-G 405413010 9/6/2016 Ag-llOm -6.94E-01 l.83E+OO 5.51E+OO u TF OFS-G 405413010 9/6/2016 Ba-140 -2.66E+OO 7.76E+OO l.72E+Ol u TF OFS-G 405413010 9/6/2016 Be-7 7.52E+Ol 2.00E+Ol 3.25E+Ol TF OFS-G 405413010 9/6/2016 Ce-141 -2.88E+OO 2.37E+OO 5.31E+OO u TF OFS-G 405413010 9/6/2016 Ce-144 2.80E-02 6.42E+OO 2.08E+Ol u TF OFS-G 405413010 9/6/2016 Co-57 l.06E+OO 8.62E-01 2.77E+OO u TF OFS-G 405413010 9/6/2016 Co-58 l.78E+OO l.33E+OO 4.37E+OO u TF OFS-G 405413010 9/6/2016 Co-60 4.39E-01 l.61E+OO 4.86E+OO u TF OFS-G 405413010 9/6/2016 Cr-51 -2.17E+Ol l.05E+Ol 2.94E+Ol u TF OFS-G 405413010 9/6/2016 Cs-134 7.08E-01 l.49E+OO 4.44E+OO u TF OFS-G 405413010 9/6/2016 Cs-137 -3.92E-01 l.25E+OO 4.05E+OO u TF OFS-G 405413010 9/6/2016 Fe-59 -2.48E+OO 3.lOE+OO 9.31E+OO u TF OFS-G 405413010 9/6/2016 I-131 l.55E+OO 3.03E+OO 6.25E+OO u TF OFS-G 405413010 9/6/2016 K-40 4.54E+03 2.30E+02 3.26E+Ol TF OFS-G 405413010 9/6/2016 La-140 1.37E+OO l.91E+OO 6.58E+OO u TF OFS-G 405413010 9/6/2016 Mn-54 8.47E-Ol l.24E+OO 4.09E+OO u TF OFS-G 405413010 9/6/2016 Nb-95 l.35E-01 l.25E+OO 4.llE+OO u TF OFS-G 405413010 9/6/2016 Ru-103 -l.42E+OO 1.14E+OO 3.49E+OO u TF OFS-G 405413010 9/6/2016 Ru-106 -9.96E+OO l.04E+Ol 3.22E+Ol u TF OFS-G 405413010 9/6/2016 Sb-124 -6.69E-01 2.19E+OO 7.04E+OO u TF OFS-G 405413010 9/6/2016 Sb-125 7.25E-01 2.71E+OO 9.23E+OO u TF OFS-G 405413010 9/6/2016 Se-75 5.lOE+OO 2.05E+OO 4.76E+OO UI TF OFS-G 405413010 9/6/2016 Th-228 -2.15E+OO 2.94E+OO 7.48E+OO u TF OFS-G 405413010 9/6/2016 Zn-65 2.38E+OO 3.42E+OO 1.lOE+Ol u TF OFS-G 405413010 9/6/2016 Zr-95 -4.12E-01 2.07E+OO 6.70E+OO u D-55 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS3-V 399230001 6/10/2016 Ac-228 -l.36E+Ol 2.25E+Ol 4.66E+Ol u TV ONS3-V 399230001 6/10/2016 Ag-108m 6.27E-02 2.74E+OO 8.79E+OO u TV ONS3-V 399230001 6/10/2016 Ag-llOm -2.73E+OO 4.39E+OO l.38E+Ol u TV ONS3-V 399230001 6/10/2016 Ba-140 l.24E+Ol l.38E+Ol 4.65E+Ol u TV ONS3-V 399230001 6/10/2016 Be-7 7.43E+02 5.57E+Ol 7.94E+Ol TV ONS3-V 399230001 6/10/2016 Ce-141 5.lOE+OO 4.49E+OO l.49E+Ol u TV ONS3-V 399230001 6110/2016 Ce-144 -3.18E+Ol l.81E+Ol 5.35E+Ol u TV ONS3-V 399230001 6/10/2016 Co-57 -l.l 7E-Ol 2.17E+OO 7.31E+OO u TV ONS3-V 399230001 6110/2016 Co-58 6.59E+OO 4.72E+OO 9.96E+OO u TV ONS3-V 399230001 6/10/2016 Co-60 -1.34E+OO 3.83E+OO l.25E+Ol u TV ONS3-V 399230001 6/10/2016 Cr-51 9.64E-01 2.77E+Ol 9.02E+Ol u TV ONS3-V 399230001 6/10/2016 Cs-134 3.79E+OO 3.80E+OO l.23E+Ol u TV ONS3-V 399230001 6110/2016 Cs-137 7.30E+OO 3.73E+OO l.18E+Ol u TV ONS3-V 399230001 6/10/2016 Fe-59 -6.45E+OO 6.78E+OO 2.13E+Ol u TV ONS3-V 399230001 6/10/2016 I-131 -6.53E+OO 4.68E+OO l.37E+Ol u TV ONS3-V 399230001 6110/2016 K-40 3.32E+03 l.94E+02 l.04E+02 TV ONS3-V 399230001 6110/2016 La-140 -4.94E+OO 4.95E+OO l.48E+Ol u TV ONS3-V 399230001 6/10/2016 Mn-54 4.21E+OO 3.31E+OO l.09E+Ol u TV ONS3-V 399230001 6/10/2016 Nb-95 3.17E+OO 3.36E+OO l.llE+Ol u TV ONS3-V 399230001 6/10/2016 Ru-103 -2.45E+OO 2.96E+OO 9.53E+OO u TV ONS3-V 399230001 6/10/2016 Ru-106 4.71E+OO 2.86E+Ol 9.55E+Ol u TV ONS3-V 399230001 6/10/2016 Sb-124 -5.88E+OO 7.14E+OO 2.15E+Ol u TV ONS3-V 399230001 6/10/2016 Sb-125 3.20E-Ol 8.45E+OO 2.71E+Ol u TV ONS3-V 399230001 6/10/2016 Se-75 2.51E+OO 3.95E+OO l.30E+Ol u TV ONS3-V 399230001 6/10/2016 Th-228 8.09E+OO 9.50E+OO 2.03E+Ol u TV ONS3-V 399230001 6/10/2016 Zn-65 -4.57E+OO 8.90E+OO 2.65E+Ol u TV ONS3-V 399230001 6/10/2016 Zr-95 2.44E-02 5.71E+OO l.88E+Ol u TV ONS3-V 399230002 6/10/2016 Ac-228 l.18E+Ol 2.97E+Ol 8.00E+Ol u TV ONS3-V 399230002 6/10/2016 Ag-108m l.16E+OO 4.62E+OO l.56E+Ol u TV ONS3-V 399230002 6/10/2016 Ag-llOm 2.36E-01 6.85E+OO 2.31E+Ol u TV ONS3-V 399230002 6/10/2016 Ba-140 4.65E+Ol 2.57E+Ol 8.18E+Ol u TV ONS3-V 399230002 6/10/2016 Be-7 8.91E+02 9.64E+Ol l.48E+02 TV ONS3-V 399230002 6/10/2016 Ce-141 l.03E+Ol l.22E+Ol 2.57E+Ol u TV ONS3-V 399230002 6/10/2016 Ce-144 -4.96E+Ol 3.71E+Ol l.01E+02 u TV ONS3-V 399230002 6/10/2016 Co-57 3.26E-01 4.03E+OO l.37E+Ol u TV ONS3-V 399230002 6110/2016 Co-58 -9.48E+OO 5.56E+OO l.51E+Ol u TV ONS3-V 399230002 6/10/2016 Co-60 -2.84E+OO 5.90E+OO l.87E+Ol u TV ONS3-V 399230002 6/10/2016 Cr-51 -6.78E+Ol 5.20E+Ol 1.55E+02 u TV ONS3-V 399230002 6/10/2016 Cs-134 -2.54E+OO 6.13E+OO l.89E+Ol u TV ONS3-V 399230002 6/10/2016 Cs-137 2.05E+Ol 1.12E+Ol l.84E+Ol ur TV ONS3-V 399230002 6/10/2016 Fe-59 7.52E-01 l.09E+Ol

3.64E+Ol u TV ONS3-V 399230002 6/10/2016 I-131 -l.34E+Ol 8.39E+OO 2.38E+Ol u TV ONS3-V 399230002 6/10/2016 K-40 2.25E+03 l.77E+02 l.71E+02 TV ONS3-V 399230002 6/10/2016 La-140 -4.61E+OO 7.33E+OO 2.34E+Ol u TV ONS3-V 399.230002 6/10/2016 Mn-54 2.63E+OO 5.39E+OO 1.76E+Ol u TV ONS3-V 399230002 6/10/2016 Nb-95 -4.72E+OO 7.84E+OO l.79E+Ol u TV ONS3-V 399230002 6/10/2016 Ru-103 -2.13E+OO 5.07E+OO l.66E+Ol u TV ONS3-V 399230002 6/10/2016 Ru-106 -3.37E+Ol 5.09E+Ol l.62E+02 u TV ONS3-V 399230002 6/10/2016 Sb-124 -1.55E+Ol l.26E+Ol 3.69E+Ol u TV ONS3-V 399230002 6/10/2016 Sb-125 2.02E+OO l.37E+Ol 4.63E+Ol u 0-56 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS3-V 399230002 6/10/2016 Se-75 -3.42E+OO 6.97E+OO 2.24E+Ol u TV ONS3-V 399230002 6/10/2016 Th-228 -2.68E+Ol 1.36E+Ol 3.35E+Ol u TV ONS3-V 399230002 6/10/2016 Zn-65 -7.80E+OO l.57E+Ol 3.84E+Ol u TV ONS3-V 399230002 6/10/2016 Zr-95 l.06E+Ol 9.94E+OO 3.26E+Ol u TV ONS3-V 399230003 6/10/2016 Ac-228 3.15E+OI 4.31E+OI 8.16E+Ol u TV ONS3-V 399230003 6/10/2016 Ag-108m -4.17E+OO 4.79E+OO l.51E+Ol u TV ONS3-V 399230003 6/10/2016 Ag-llOm -3.06E+OO 6.94E+OO 2.27E+Ol u TV ONS3-V 399230003 6/10/2016 Ba-140 2.97E+Ol 2.64E+Ol 7.65E+Ol u TV ONS3-V 399230003 6/10/2016 Be-7 5.05E+02 8.39E+Ol l.41E+02 TV ONS3-V 399230003 6/10/2016 Ce-141 -l.49E+Ol l.16E+Ol 2.65E+OI u TV ONS3-V 399230003 6/10/2016 Ce-144 -3.93E+Ol 3.30E+Ol l.OIE+02 u TV ONS3-V 399230003 6/10/2016 Co-57 2.97E+OO 4.lOE+OO 1.34E+Ol u TV ONS3-V 399230003 6/10/2016 Co-58 9.64E+OO 6.00E+OO 1.97E+Ol u TV ONS3-V 399230003 6/10/2016 Co-60 1.llE+Ol l.05E+Ol 2.41E+Ol u TV ONS3-V 399230003 6/10/2016 Cr-51 3.70E+Ol 4.66E+Ol l.57E+02 u TV ONS3-V 399230003 6/10/2016 Cs-134 -9.79E+OO 7.34E+OO l.95E+Ol u TV ONS3-V 399230003 6/10/2016 Cs-137 -6.25E+OO 6.15E+OO l.85E+Ol u TV ONS3-V 399230003 6/10/2016 Fe-59 -l.70E-01 l.12E+Ol 3.69E+Ol u TV ONS3-V 399230003 6/10/2016 I-131 l.llE+OO 7.41E+OO 2.48E+Ol u TV ONS3-V 399230003 6/10/2016 K-40 4.00E+03 2.66E+02 l.72E+02 TV ONS3-V 399230003 6/10/2016 La-140 9.44E-Ol 6.82E+OO 2.31E+Ol u TV ONS3-V 399230003 6/10/2016 Mn-54 2.30E-Ol 5.26E+OO l.77E+Ol u TV ONS3-V 399230003 6/10/2016 Nb-95 -1.39E+Ol 8.57E+OO 1.82E+Ol u TV ONS3-V 399230003 6/10/2016 Ru-103 -4.70E+OO 5.19E+OO 1.62E+Ol u TV ONS3-V 399230003 6/10/2016 Ru-106 -4.03E+Ol 4.86E+Ol l.50E+02 u TV ONS3-V 399230003 6/10/2016 Sb-124 -2.37E+OO l.06E+Ol 3.49E+Ol u TV ONS3-V 399230003 6/10/2016 Sb-125 -3.64E+OO l.62E+Ol 4.66E+Ol u TV ONS3-V 399230003 6/10/2016 Se-75 -6.15E-01 6.88E+OO 2.33E+Ol u TV ONS3-V 399230003 6/10/2016 Th-228 6.81E-Ol l.41E+Ol 3.37E+Ol u TV ONS3-V 399230003 6/10/2016 Zn-65 -l.07E+Ol l.24E+Ol 3.84E+Ol u TV ONS3-V 399230003 6/10/2016 Zr-95 -1.33E+Ol 9.82E+OO 2.99E+Ol u TV ONSl-V 399230004 6/10/2016 Ac-228 l.59E+Ol 2.58E+Ol 5.05E+Ol u TV ONSl-V 399230004 6/10/2016 Ag-108m 7.79E-01 2.85E+OO 9.19E+OO u TV ONSl-V 399230004 6/10/2016 Ag-llOm 4.04E+OO 4.23E+OO l.40E+Ol u TV ONSl-V 399230004 6/10/2016 Ba-140 -9.12E+OO 1.36E+Ol 4.41E+Ol u TV ONSl-V 399230004 6/10/2016 Be-7 l.02E+03 7.30E+Ol 9.00E+Ol TV ONSl-V 399230004 6/10/2016 Ce-141 4.0IE+OO 8.78E+OO 1.78E+Ol u TV ONSl-V 399230004 6/10/2016 Ce-144 6.57E+OO 2.27E+Ol 6.76E+Ol u TV ONSl-V 399230004 6/10/2016 Co-57 -l.18E+OO 2.74E+OO 9.lOE+OO u TV ONSl-V 399230004 6/10/2016 Co-58 3.17E+OO 3.72E+OO l.09E+Ol u TV ONSl-V 399230004 6/10/2016 Co-60 6.96E-Ol 3.63E+OO 1.22E+Ol u TV ONSl-V 399230004 6/10/2016 Cr-51 -4.55E+Ol 3.13E+Ol 9.16E+Ol u TV ONSl-V 399230004 6/10/2016 Cs-134 3.29E+OO 3.42E+OO 1.14E+Ol u TV ONSl-V 399230004 6/10/2016 Cs-137 9.89E-01 3.61E+OO 1.20E+Ol u TV ONSl-V 399230004 6/10/2016 Fe-59 -3.86E+OO 6.68E+OO 2.17E+Ol u TV ONSl-V 399230004 6/10/2016 I-131 3.15E+OO 4.87E+OO l.58E+Ol u TV ONSl-V 399230004 6/10/2016 K-40 2.38E+03 1.60E+02 9.79E+Ol TV ONSl-V 399230004 6/10/2016 La-140 l.45E+OO 4.17E+OO 1.40E+Ol u TV ONSl-V 399230004 6/10/2016 Mn-54 3.43E+OO 3.36E+OO l.llE+Ol u TV ONSl-V 399230004 611012016 Nb-95 5.52E+OO 3.46E+OO 1.12E+Ol u D-57 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONSl-V 399230004 6/10/2016 Ru-103 -l.03E+OO 3.19E+OO l.06E+Ol u TV ONSl-V 399230004 6/10/2016 Ru-106 l.97E+Ol 2.96E+Ol 9.95E+Ol u TV ONSl-V 399230004 6/10/2016 Sb-124 -4.06E+OO 7.13E+OO 2.21E+Ol u TV ONSl-V 399230004 6/10/2016 Sb-125 -l.61E+OO 8.60E+OO 2.74E+Ol u TV ONSl-V 399230004 6/10/2016 Se-75 -3.96E+OO 6.07E+OO 1.41E+Ol u TV ONSl-V 399230004 6/10/2016 Th-228 -l.27E+Ol 9.38E+OO 2.18E+Ol u TV ONSl-V 399230004 6/10/2016 Zn-65 9.96E-01 7.66E+OO 2.59E+Ol u TV ONSl-V 399230004 6/10/2016 Zr-95 8.56E+OO 5.96E+OO l.96E+Ol u TV ONSl-V 399230005 6/10/2016 Ac-228 -1.39E+Ol 2.76E+Ol 7.61E+Ol u TV ONSl-V 399230005 6/10/2016 Ag-108111

-2.18E+OO 4.19E+OO l.33E+Ol u TV ONSl-V 399230005 6/10/2016 Ag-llOm -6.0lE+OO 7.0lE+OO 2.18E+Ol u TV ONSl-V 399230005 6/10/2016 Ba-140 l.88E+Ol 2.15E+Ol 6.99E+Ol u TV ONSl-V 399230005 6110/2016 Be-7 l.62E+03 9.84E+Ol l.20E+02 TV ONSl-V 399230005 6/10/2016 Ce-141 1.24E+Ol 7.63E+OO 2.35E+Ol u TV ONSl-V 399230005 6/10/2016 Ce-144 -l.86E+Ol 2.61E+Ol 8.16E+Ol u TV ONSl-V 399230005 6/10/2016 Co-57 4.5IE+OO 3.69E+OO l.18E+Ol u TV ONSl-V 399230005 6/10/2016 Co-58 -l.03E+OO 4.71E+OO l.55E+Ol u TV ONSl-V 399230005 6/10/2016 Co-60 6.84E+OO 6.29E+OO l.89E+Ol u TV ONSl-V 399230005 6/10/2016 Cr-51 l.1IE+02 5.55E+Ol l.31E+02 u TV ONSl-V 399230005 6/10/2016 Cs-134 4.03E+OO 5.88E+OO l.81E+Ol u TV ONSl-V 399230005 6/10/2016 Cs-137 4.70E+OO 5.lOE+OO l.73E+Ol u TV ONSl-V 399230005 6/10/2016 Fe-59 -8.91E+OO 9.78E+OO 2.95E+Ol u TV ONSl-V 399230005 6/10/2016 I-131 7.48E+OO 6.75E+OO 2.22E+Ol u TV ONSl-V 399230005 6/10/2016 K-40 2.68E+03 l.73E+02 l.57E+02 TV ONSl-V 399230005 6/10/2016 La-140 l.88E+OO 7.53E+OO 2.51E+Ol u TV ONSl-V 399230005 6/10/2016 Mn-54 l.88E+OO 4.85E+OO (62E+Ol u TV ONSl-V 399230005 6/10/2016 Nb-95 -3.92E+OO 6.13E+OO l.58E+Ol u TV ONSl-V 399230005 6/10/2016 Ru-103 2.76E-01 4.6IE+OO l.49E+Ol u TV ONSl-V 399230005 6/10/2016 Ru-106 6.20E+OO 4.46E+Ol l.51E+02 u TV ONSl-V 399230005 6/10/2016 Sb-124 4.82E+OO l.14E+Ol 3.84E+Ol u TV ONSl-V 399230005 6/10/2016 Sb-125 -l.17E+Ol 1.30E+Ol 4.03E+Ol u TV ONSl-V 399230005 6110/2016 Se-75 l.07E+Ol 6.03E+OO l.93E+Ol u TV ONSl-V 399230005 6/10/2016 Th-228 7.68E+OO l.41E+Ol 3.llE+Ol u TV ONSl-V 399230005 6/10/2016 Zn-65 -1.59E+Ol l.lOE+Ol 3.llE+Ol u TV ONSl-V 399230005 6/10/2016 Zr-95 -l.43E+Ol 9.13E+OO 2.65E+Ol u TV ONSl-V 399230006 6/10/2016 Ac-228 l.79E+Ol 2.82E+Ol 5.80E+Ol u TV ONSl-V 399230006 6/10/2016 Ag-108m -4.23E+OO 4.52E+OO 1.llE+Ol u TV ONSl-V 399230006 6/10/2016 Ag-llOm 9.12E-01 6.16E+OO l.79E+Ol u TV ONSl-V 399230006 6/10/2016 Ba-140 3.18E+Ol 1.74E+Ol 5.3IE+Ol u TV ONSl-V 399230006 6/10/2016 Be-7 4.08E+02 5.76E+Ol 9.40E+Ol TV ONSl-V 399230006 6/10/2016 Ce-141 -l.07E+Ol 8.84E+OO l.81E+Ol u TV ONSl-V 399230006 6/10/2016 Ce-144 -2.07E+Ol 2.14E+Ol 6.95E+Ol u TV ONSl-V 399230006 6/10/2016 Co-57 2.55E+OO 3.18E+OO 9.56E+OO u TV ONSl-V 399230006 6/10/2016 Co-58 -7.32E+OO 4.09E+OO l.08E+Ol u TV ONSl-V 399230006 6/10/2016 Co-60 -1.37E+Ol 6.53E+OO 1.36E+Ol u TV ONSl-V 399230006 6/10/2016 Cr-51 3.39E+Ol 3.29E+Ol l.06E+02 u TV ONSl-V 399230006 6110/2016 Cs-134 8.0lE-01 4.50E+OO l.32E+Ol u TV ONSl-V 399230006 6/10/2016 Cs-137 l.16E+OO 3.62E+OO l.19E+Ol u TV ONSl-V 399230006 6/10/2016 Fe-59 9.45E+OO 8.52E+OO 2.82E+Ol u TV ONSl-V 399230006 6/10/2016 I-131 -5.75E+OO 5.26E+OO l.57E+Ol u D-58 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TV ONSl-V 399230006 6/10/2016 K-40 3.87E+03 2.19E+02 l.23E+02 TV ONSl-V 399230006 6/10/2016 La-140 -1.50E+OO 4.74E+OO l.53E+Ol u TV ONSl-V 399230006 6/10/2016 Mn-54 8.38E-02 3.71E+OO 1.25E+Ol u TV ONSl-V 399230006 6/10/2016 Nb-95 -2.77E+OO 3.96E+OO l.22E+Ol u TV ONSl-V 399230006 6/10/2016 Ru-103 -2.86E+OO 3.70E+OO l.18E+Ol u TV ONSl-V 399230006 6/10/2016 Ru-106 -2.71E+Ol 3.58E+Ol l.12E+02 u TV ONSl-V 399230006 6/10/2016 Sb-124 7.29E+OO 8.34E+OO 2.85E+Ol u TV ONSl-V 399230006 6/10/2016 Sb-125 -1.08E+Ol 9.63E+OO 3.02E+Ol u TV ONSl-V 399230006 6/10/2016 Se-75 -6.78E+OO 5.lOE+OO l.54E+Ol u TV ONSl-V 399230006 6/10/2016 Th-228 6.35E+OO l.14E+Ol 2.65E+Ol u TV ONSl-V 399230006 6/10/2016 Zn-65 -7.02E+OO 9.52E+OO 2.97E+Ol u TV ONSl-V 399230006 6/10/2016 Zr-95 5.79E+OO 6.64E+OO 2.17E+Ol u TV OFS2-V 399230007 6/10/2016 Ac-228 8.lOE+OO 3.00E+Ol 5.0lE+Ol u TV OFS2-V 399230007 6/10/2016 Ag-108m -7.83E-Ol 2.90E+OO 9.53E+OO u TV OFS2-V 399230007 6/10/2016 Ag-llOm 3.12E+OO 4.77E+OO l.61E+Ol u TV OFS2-V 399230007 6/10/2016 Ba-140 -1.89E+Ol l.53E+Ol 4.57E+Ol u TV OFS2-V 399230007 6/10/2016 Be-7 4.38E+02 5.99E+Ol 9.12E+Ol TV OFS2-V 399230007 6/10/2016 Ce-141 l.66E+Ol 9.18E+OO 1.34E+OI UI TV OFS2-V 399230007 6/10/2016 Ce-144 2.59E+OI l.85E+OI 6.02E+OI u TV OFS2-V 399230007 6/10/2016 Co-57 -4.99E+OO 2.47E+OO 6.90E+OO u TV OFS2-V 399230007 6/10/2016 Co-58 5.07E+OO 3.42E+OO 1.15E+Ol u TV OFS2-V 399230007 6/10/2016 Co-60 l.92E+OO 3.95E+OO 1.18E+Ol u TV OFS2-V 399230007 6/10/2016 Cr-51 -2.56E+Ol 2.81E+Ol 9.llE+Ol u TV OFS2-V 399230007 6/10/2016 Cs-134 l.65E+OO 3.88E+OO 1.32E+Ol u TV OFS2-V 399230007 6/10/2016 Cs-137 -8.09E-02 3.87E+OO 1.25E+Ol u TV OFS2-V 399230007 6/10/2016 Fe-59 l.35E+Ol 8.16E+OO 2.66E+Ol u TV OFS2-V 399230007 6/10/2016 I-131 -5.l lE-01 4.35E+OO 1.46E+Ol u TV OFS2-V 399230007 6/10/2016 K-40 3.26E+03 l.67E+02 1.15E+02 TV OFS2-V 399230007 6/10/2016 La-140 2.58E+OO 5.37E+OO l.81E+Ol u TV OFS2-V 399230007 6/10/2016 Mn-54 -7.77E+OO 3.98E+OO l.08E+Ol u TV OFS2-V 399230007 6/10/2016 Nb-95 -2.42E+OO 4.75E+OO 1.26E+Ol u TV OFS2-V 399230007 6/10/2016 Ru-103 -4.91E+OO 3.44E+OO l.OlE+Ol u TV OFS2-V 399230007 6/10/2016 Ru-106 3.65E+Ol 3.48E+Ol l.14E+02 u TV OFS2-V 399230007 6/10/2016 Sb-124 1.43E+Ol 8.48E+OO 2.89E+Ol u TV OFS2-V 399230007 6/10/2016 Sb-125 -3.41E+OO 8.98E+OO 2.94E+Ol u TV OFS2-V 399230007 6/10/2016 Se-75 3.19E-OI 4.04E+OO l.29E+OI u TV OFS2-V 399230007 6/10/2016 Th-228 -l.76E+OO 8.67E+OO 2.05E+Ol u TV OFS2-V 399230007 6/10/2016 Zn-65 -2.09E+OO 7.97E+OO 2.56E+Ol u TV OFS2-V 399230007 6/10/2016 Zr-95 3.39E+OO 6.84E+OO 2.05E+Ol u TV ONS3-V 401692001 7/14/2016 Ac-228 1.92E+Ol 2.08E+Ol 4.28E+Ol u TV ONS3-V 401692001 7/14/2016 Ag-108m -1.32E+OO 2.37E+OO 7.52E+OO u TV ONS3-V 401692001 7/14/2016 Ag-110111

-6.lOE+OO 3.99E+OO 1.14E+Ol u TV ONS3-V 401692001 7/14/2016 Ba-140 -l.45E+Ol l.33E+Ol 3.98E+Ol u TV ONS3-V 401692001 7114/2016 Be-7 l.41E+03 8.14E+Ol 7.54E+Ol TV ONS3-V 401692001 7/14/2016 Ce-141 5.67E-Ol 6.80E+OO l.39E+Ol u TV ONS3-V 401692001 7/14/2016 Ce-144 -3.22E+OO l.56E+Ol 5.00E+Ol u TV ONS3-V 401692001 7/14/2016 Co-57 -3.48E+OO 2.99E+OO 6.59E+OO u TV ONS3-V 401692001 7/14/2016 Co-58 7.44E-01 2.56E+OO 8.52E+OO u TV ONS3-V 401692001 7114/2016 Co-60 -4.lOE+OO 2.91E+OO 8.44E+OO u TV ONS3-V 401692001 7114/2016 Cr-51 -4.89E+Ol 2.62E+OI 7.46E+Ol u D-59 L_

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS3-V 401692001 7/14/2016 Cs-134 -2.63E+OO 2.77E+OO 8.56E+OO u TV ONS3-V 401692001 7/14/2016 Cs-137 -3.50E+OO 2.80E+OO 8.56E+OO u TV ONS3-V 401692001 7/14/2016 Fe-59 -3.95E-02 5.50E+OO l.77E+Ol u TV ONS3-V 401692001 7114/2016 I-131 9.16E-01 4.05E+OO 1.34E+Ol u TV ONS3-V 401692001 7/14/2016 K-40 l.23E+03 l.08E+o2 8.58E+Ol TV ONS3-V 401692001 7/14/2016 La-140 -3.13E+OO 3.75E+OO 1.14E+Ol u TV ONS3-V 401692001 7/14/2016 Mn-54 4.30E-Ol 2.64E+OO 8.72E+OO u TV ONS3-V 401692001 7/14/2016 Nb-95 2.04E+OO 2.74E+OO 9.15E+OO u TV ONS3-V 401692001 7/14/2016 Ru-103 l.71E+OO 2.8IE+OO 9.14E+OO u TV ONS3-V 401692001 7/14/2016 Ru-106 2.93E+Ol 2.45E+Ol 8.17E+Ol u TV ONS3-V 401692001 7/14/2016 Sb-124 l.36E+OO 6.14E+OO 2.03E+Ol u TV ONS3-V 401692001 7/14/2016 Sb-125 l.17E+Ol 7.56E+OO 2.40E+Ol u TV ONS3-V 401692001 7/14/2016 Se-75 -2.14E+OO 3.47E+OO 1.14E+Ol u TV ONS3-V 401692001 7/14/2016 Th-228 7.97E+OO 8.46E+OO l.79E+Ol u TV ONS3-V 401692001 7/14/2016 Zn-65 2.00E+OO 5.84E+OO l.90E+Ol u TV ONS3-V 401692001 7/14/2016 Zr-95 l.25E+OO 4.60E+OO 1.54E+Ol u TV ONS3-V 401692002 7/14/2016 Ac-228 2.28E+Ol l.80E+Ol 3.58E+Ol u TV ONS3-V 401692002 7/14/2016 Ag-108m -l.75E+OO 2.20E+OO 6.88E+OO u TV ONS3-V 401692002 7/14/2016 Ag-llOm -5.50E-Ol 3.52E+OO 1.14E+Ol u TV ONS3-V 401692002 7/14/2016 Ba-140 l.lOE+Ol l.14E+Ol 3.64E+Ol u TV ONS3-V 401692002 7/14/2016 Be-7 l.14E+03 7.22E+Ol 6.71E+Ol TV ONS3-V 401692002 7/14/2016 Ce-141 3.12E+OO 6.20E+OO l.17E+Ol u TV ONS3-V 401692002 7/14/2016 Ce-144 -7.07E+OO l.46E+Ol 4.69E+Ol u TV ONS3-V 401692002 7/14/2016 Co-57 7.99E-01 l.81E+OO 5.93E+OO u TV ONS3-V 401692002 7/14/2016 Co-58 2.73E-Ol 2.45E+OO 8.06E+OO u TV ONS3-V 401692002 7/14/2016 Co-60 -2.44E+OO 2.74E+OO 8.48E+OO u TV ONS3-V 401692002 7/14/2016 Cr-51 -2.65E+Ol 2.17E+Ol 6.72E+Ol u TV ONS3-V 401692002 7/14/2016 Cs-134 -3.98E+OO 2.77E+OO 8.IOE+OO u TV ONS3-V 401692002 7/14/2016 Cs-137 2.33E+OO 4.84E+OO 8.09E+OO u TV ONS3-V 401692002 7/14/2016 Fe-59 -2.54E+OO 5.15E+OO l.68E+Ol u TV ONS3-V 401692002 7/14/2016 I-131 -l.16E+OO 3.80E+OO 1.24E+Ol u TV ONS3-V 401692002 7/14/2016 K-40 3.3IE+03 I.79E+02 8.25E+Ol TV ONS3-V 401692002 7/14/2016 La-140 5.06E+OO 3.75E+OO 1.24E+Ol u TV ONS3-V 401692002 7/14/2016 Mn-54 .-2.86E+OO 2.6IE+OO 7.94E+OO u TV ONS3-V 401692002 7/14/2016 Nb-95 l.67E+OO 2.84E+OO 8.23E+OO u TV ONS3-V 401692002 7/14/2016 Ru-103 -2.64E+OO 2.59E+OO 7.87E+OO u TV ONS3-V 401692002 7/14/2016 Ru-106 -4.71E+Ol 2.42E+Ol 6.78E+Ol u TV ONS3-V 401692002 7/14/2016 Sb-124 -4.23E+OO 1.04E+Ol l.93E+Ol u TV ONS3-V 401692002 7/14/2016 Sb-125 4.42E+OO 6.72E+OO 2.19E+Ol u TV ONS3-V 401692002 7/14/2016 Se-75 9.02E-01 3.23E+OO l.09E+Ol u TV ONS3-V 401692002 7/14/2016 Th-228 -4.64E+OO 6.45E+OO 1.59E+Ol u TV ONS3-V 401692002 7/14/2016 Zn-65 -7.6IE+OO 6.12E+OO l.86E+Ol u TV ONS3-V 401692002 7/14/2016 Zr-95 l.27E+Ol l.OIE+Ol l.50E+Ol u TV ONS3-V 401692003 7/14/2016 Ac-228 3.12E+Ol 3.41E+Ol 7.44E+Ol u TV ONS3-V 401692003 7/14/2016 Ag-108m -2.49E+OO 4.llE+OO l.3IE+Ol u TV ONS3-V 401692003 7/14/2016 Ag-llOm 3.18E+OO 8.lOE+OO 2.33E+Ol u TV ONS3-V 401692003 7/14/2016 Ba-140 4.13E+Ol 2.39E+Ol 7.44E+Ol u TV ONS3-V 401692003 7/14/2016 Be-7 1.55E+03 7.76E+Ol l.35E+02 TV ONS3-V 401692003 7/14/2016 Ce-141 -8.20E+OO 7.23E+OO l.71E+Ol U TV ONS3-V 401692003 7/14/2016 Ce-144 -4.19E+OO 2.0IE+Ol 6.50E+Ol U D-60 ----------

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS3-V 401692003 7/14/2016 Co-57 -l.98E-Ol 2.40E+OO 7.78E+OO u TV ONS3-V 401692003 7/14/2016 Co-58 -8.39E+OO 5.27E+OO l.54E+Ol u TV ONS3-V 401692003 7/14/2016 Co-60 -9.59E-Ol 5.04E+OO l.67E+Ol u TV ONS3-V 401692003 7/14/2016 Cr-51 5.57E+Ol 4.00E+Ol l.29E+02 u TV ONS3-V 401692003 7/14/2016 Cs-134 5.85E+OO 5.68E+OO l.89E+Ol u TV ONS3-V 401692003 7/14/2016 Cs-137 l.OlE+Ol 7.17E+OO l.67E+Ol u TV ONS3-V 401692003 7/14/2016 Fe-59 2.28E+OO l.05E+Ol 3.44E+Ol u TV ONS3-V 401692003 7714/2016 I-131 -3.61E+OO 7.50E+OO 2.lOE+Ol u TV ONS3-V 401692003 7/14/2016 K-40 2.58E+03 l.68E+02 l.50E+02 TV ONS3-V 401692003 7/14/2016 La-140 3.07E+Ol 8.55E+OO 2.23E+Ol UI TV ONS3-V 401692003 7/14/2016 Mn-54 -2.22E+OO 4.82E+OO l.56E+Ol u TV ONS3-V 401692003 7/14/2016 Nb-95 5.0lE+OO 5.14E+OO 1.71E+Ol u TV ONS3-V 401692003 7/14/2016 Ru-103 -4.84E+OO 4.87E+OO l.50E+Ol u TV ONS3-V 401692003 7/14/2016 Ru-106 2.57E+Ol 4.28E+Ol 1.45E+02 u TV ONS3-V 401692003 7114/2016 Sb-124 6.44E+OO 1.03E+Ol 3.47E+Ol u TV ONS3-V 401692003 7/14/2016 Sb-125 1.77E+Ol l.32E+Ol 4.24E+Ol u TV ONS3-V 401692003 7114/2016 Se-75 6.35E-01 5.14E+OO l.72E+Ol u TV ONS3-V 401692003 7/14/2016 Th-228 1.47E+Ol 1.lOE+Ol 2.66E+Ol u TV ONS3-V 401692003 7/14/2016 Zn-65 -4.07E+Ol l.53E+Ol 3.47E+Ol u TV ONS3-V 401692003 7114/2016 Zr-95 -l.33E+Ol 1.02E+Ol 2.84E+Ol u TV ONSl-V 401692004 7/14/2016 Ac-228 2.24E+Ol 2.64E+Ol 4.96E+Ol u TV ONSl-V 401692004 7/14/2016 Ag-108m -3.05E+OO 2.84E+OO 8.65E+OO u TV ONSl-V 401692004 7/14/2016 Ag-llOm -l.05E+OO 5.0lE+OO l.40E+Ol u TV ONSl-V 401692004 7/14/2016 Ba-140 5.06E-Ol l.37E+Ol 4.63E+Ol u TV ONSl-V 401692004 7/14/2016 Be-7 2.56E+03 9.25E+Ol 9.72E+Ol TV ONSl-V 401692004 7/14/2016 Ce-141 4.82E-01 6.19E+OO 1.49E+Ol u TV ONSl-V 401692004 7/14/2016 Ce-144 3.06E+OO 1.74E+Ol 5.57E+Ol u TV ONSl-V 401692004 7/14/2016 Co-57 -l.02E+Ol 3.98E+OO 7.07E+OO u TV ONSl-V 401692004 7/14/2016 Co-58 -2.90E+OO 3.18E+OO 9.92E+OO u TV ONSl-V 401692004 7/14/2016 Co-60 -l.64E+Ol l.07E+Ol 1.20E+Ol u TV ONSl-V 401692004 7/14/2016 Cr-51 4.26E+Ol 3.02E+Ol 9.66E+Ol u TV ONSl-V 401692004 7/14/2016 Cs-134 4.18E+OO 3.76E+OO 1.24E+Ol u TV ONSl-V 401692004 7/14/2016 Cs-137 9.50E+OO 4.96E+OO l.13E+Ol u TV ONSl-V 401692004 7/14/2016 Fe-59 -8.38E-Ol 7.19E+OO 2.30E+Ol u TV ONSl-V 401692004 7/14/2016 I-131 -3.12E+OO 4.85E+OO l.55E+Ol u TV ONSl-V 401692004 7114/2016 K-40 3.84E+03 1.64E+02 9.38E+Ol TV ONSl-V 401692004 7114/2016 La-140 -6.36E+OO 4.89E+OO 1.42E+Ol u TV ONSl-V 401692004 7114/2016 Mn-54 -4.64E+OO 3.50E+OO l.05E+Ol u TV ONSl-V 401692004 7/14/2016 Nb-95 l.94E+OO 3.17E+OO l.06E+Ol u TV ONSl-V 401692004 7/14/2016 Ru-103 -6.45E+OO 3.78E+OO l.06E+Ol u TV ONSl-V 401692004 7/14/2016 Ru-106 -2.75E+Ol 3.00E+Ol 9.58E+Ol u TV ONSl-V 401692004 7/14/2016 Sb-124 -8.12E+OO 8.04E+OO l.97E+Ol u TV ONSl-V 401692004 7/14/2016 Sb-125 8.79E-01 8.81E+OO 2.86E+Ol u TV ONSl-V 401692004 7114/2016 Se-75 5.44E+OO 4.37E+OO l.42E+Ol u TV ONSl-V 401692004 7/14/2016 Th-228 l.93E+OO 7.57E+OO l.96E+Ol u TV ONSl-V 401692004 7/14/2016 Zn-65 l.03E+Ol 7.96E+OO 2.69E+Ol u TV ONSl-V 401692004 7114/2016 Zr-95 7.08E+OO 6.04E+OO l.99E+Ol u TV ONSl-V 401692005 7/14/2016 Ac-228 6.16E+OO 2.37E+Ol 4.94E+Ol u TV ONSl-V 401692005 7114/2016 Ag-108m 2.63E+OO 2.69E+OO 8.92E+OO u TV ONSl-V 401692005 7/14/2016 Ag-llOm 7.76E+OO 4.79E+OO 1.54E+Ol u D-61 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONSl-V 401692005 7/14/2016 Ba-140 1.56E+Ol I.46E+Ol 4.75E+Ol u TV ONSl-V 401692005 7/14/2016 Be-7 9.77E+02 6.97E+Ol 8.27E+Ol TV ONSl-V 401692005 7/14/2016 Ce-141 2.94E+OO 7.63E+OO l.23E+Ol u TV ONSl-V 401692005 7/14/2016 Ce-144 l.03E+Ol l.44E+Ol 4.85E+Ol u TV ONSl-V 401692005 7/14/2016 Co-57 -2.07E-01 l.90E+OO 6.00E+OO u TV ONSl-V 401692005 7/14/2016 Co-58 -4.56E-Ol 3.69E+OO l.OIE+Ol u TV ONSl-V 401692005 7114/2016 Co-60 4.44E-01 3.20E+OO l.06E+Ol u TV ONSl-V 401692005 7/14/2016 Cr-51 -2.49E+Ol 2.81E+Ol 8.66E+Ol u TV ONSl-V 401692005 7/14/2016 Cs-134 3.03E+OO 3.51E+OO l.17E+Ol u TV ONSl-V 401692005 7/14/2016 Cs-137 2.14E+OO 3.43E+OO 1.llE+Ol u TV ONSl-V 401692005 7114/2016 Fe-59 -7.65E+OO 6.40E+OO 1.87E+Ol u TV ONSl-V 401692005 7/14/2016 I-131 -1.00E+OO 4.37E+OO 1.46E+Ol u TV ONSl-V 401692005 7/14/2016 K-40 l.44E+03 1.18E+02 9.97E+Ol TV ONSl-V 401692005 7114/2016 La-140 -8.09E+OO 5.40E+OO 1.5IE+Ol u TV ONSl-V 401692005 7114/2016 Mn-54 -6.89E+OO . * ..

_ ..... 3.92E+OO 9.20E+OO u TV ONSl-V 401692005 7114/2016 Nb-95 5.41E+OO 3.39E+OO 1.IOE+Ol u TV ONSl-V 401692005 7/14/2016 Ru-103 -2.57E+OO 3.08E+OO 9.72E+OO u TV ONSl-V 401692005 7114/2016 Ru-106 -l.43E+Ol 2.96E+Ol 9.40E+Ol u TV ONSl-V 401692005 7/14/2016 Sb-124 -3.54E+OO 7.30E+OO 2.36E+Ol u TV ONSl-V 401692005 7/14/2016 Sb-125 -1.23E+Ol 8.41E+OO 2.54E+Ol u TV ONSl-V 401692005 7/1412016 Se-75 -5.09E+OO 3.86E+OO 1.17E+Ol u TV ONSl-V 401692005 7/14/2016 Th-228 -7.53E+OO 6.85E+OO l.77E+Ol u TV ONSl-V 401692005 7/14/2016 Zn-65 4.75E+OO 8.00E+OO 2.26E+Ol u TV ONSl-V 401692005 7/14/2016 Zr-95 l.17E+Ol 5.90E+OO 1.86E+Ol u TV ONSl-V 401692006 7/14/2016 Ac-228 2.02E+Ol l.73E+Ol 3.52E+Ol u TV ONSl-V 401692006 7114/2016 Ag-108m 6.24E-02 2.00E+OO 6.41E+OO u TV ONSl-V 401692006 7/14/2016 Ag-llOm 7.9IE-01 3.18E+OO l.03E+Ol u TV ONSl-V 401692006 7/14/2016 Ba-140 2.86E+OO 9.84E+OO 3.31E+Ol u TV ONSl-V 401692006 7/14/2016 Be-7 4.71E+02 3.84E+Ol 6.27E+Ol TV ONSl-V 401692006 7/14/2016 Ce-141 2.99E+OO 5.19E+OO 1.0IE+Ol u TV ONSl-V 401692006 7/14/2016 Ce-144 1.74E+Ol 1.27E+Ol 3.92E+Ol u TV ONSl-V 401692006 7/14/2016 Co-57 6.94E-01 1.60E+OO 5.12E+OO u TV ONSl-V 401692006 7/14/2016 Co-58 -3.49E+OO 2.49E+OO 7.33E+OO u TV ONSl-V 401692006 7/14/2016 Co-60 -2.35E+OO 2.57E+OO 7.93E+OO u TV ONSl-V 401692006 7/14/2016 Cr-51 -6.75E+OO l.87E+Ol 6.05E+Ol u TV ONSl-V 401692006 7/14/2016 Cs-134 l.17E+OO 3.00E+OO 8.53E+OO u TV ONSl-V 401692006 7/14/2016 Cs-137 l.16E+OO 2.45E+OO 8.14E+OO u TV ONSl-V 401692006 7/14/2016 Fe-59 5.06E+OO 5.20E+OO 1.72E+Ol u TV ONSl-V 401692006 7114/2016 I-131 -3.16E+OO 3.34E+OO 1.04E+Ol u TV ONSl-V 401692006 7114/2016 K-40 3.32E+03 1.83E+02 6.24E+Ol TV ONSl-V 401692006 7/14/2016 La-140 -3.09E+OO 3.34E+OO l.05E+Ol u TV ONSl-V 401692006 7/14/2016 Mn-54 -1.44E+OO 2.27E+OO 7.15E+OO u TV ONSl-V 401692006 7/14/2016 Nb-95 2.96E+OO 2.21E+OO 7.53E+OO u TV ONSl-V 401692006 7/14/2016 Ru-103 -2.52E-01 3.45E+OO 6.78E+OO u TV ONSl-V 401692006 7/14/2016 Ru-106 -7.67E+OO 2.00E+Ol 6.55E+Ol u TV ONSl-V 401692006 7/14/2016 Sb-124 9.27E-01 5.13E+OO l.72E+Ol u TV ONSl-V 401692006 7/14/2016 Sb-125 4.2IE+OO 5.99E+OO l.93E+Ol u TV ONSl-V 401692006 7/14/2016 Se-75 -4.02E+OO 2.87E+OO 8.75E+OO u TV ONSl-V 401692006 7/14/2016 Th-228 1.20E+OO 6.93E+OO l.32E+Ol U TV ONSl-V 401692006 7/14/2016 Zn-65 -1.29E+Ol 6.16E+OO l.61E+Ol U D-62 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STA'IIION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONSl-V 401692006 7/14/2016 Zr-95 4.88E-01 4.0IE+OO I.32E+Ol u TV OFS2-V 401692007 7/14/2016 Ac-228 7.17E-01 1.53E+Ol 3.41E+Ol u TV OFS2-V 401692007 7114/2016 Ag-108m -1.88E+OO 2.0IE+OO 6.46E+OO u TV OFS2-V 401692007 7/14/2016 Ag-llOm -4.52E+OO 3.60E+OO 9.37E+OO u TV OFS2-V 401692007 7/14/2016 Ba-140 4.71E+OO 9.31E+OO 3.llE+Ol u TV OFS2-V 401692007 7/14/2016 Be-7 7.00E+02 4.90E+Ol 6.27E+Ol TV OFS2-V 401692007 7/14/2016 Ce-141 8.19E+OO 5.75E+OO 1.06E+Ol u TV OFS2-V 401692007 7/14/2016 Ce-144 1.39E+Ol 1.34E+Ol 4.44E+Ol u TV OFS2-V 401692007 7/14/2016 Co-57 3.68E-01 1.65E+OO 5.61E+OO u TV OFS2-V 401692007 7/14/2016 Co-58 -3.45E-01 2.51E+OO 6.95E+OO u TV OFS2-V 401692007 7/14/2016 Co-60 2.65E+OO 2.60E+OO 8.59E+OO u TV OFS2-V 401692007 7/14/2016 Cr-51 2.80E+OO 2.0lE+Ol 6.52E+Ol u TV OFS2-V 401692007 7114/2016 Cs-134 -1.84E+OO 2.86E+OO 7.65E+OO u TV OFS2-V 401692007 7/14/2016 Cs-137 -3.31E+OO 3.84E+OO 9.66E+OO u TV OFS2-V 401692007 7/14/2016 Fe-59 4.88E-Ol 5.0SE+OO 1.45E+Ol u TV OFS2-V 401692007 7/14/2016 1-131 8.67E-Ol 3.48E+OO 1.12E+Ol u TV OFS2-V 401692007 7/14/2016 K-40 2.48E+03 l.38E+02 7.22E+Ol TV OFS2-V 401692007 7/14/2016 La-140 -2.23E+OO 3.03E+OO 9.62E+OO u TV OFS2-V 401692007 7/14/2016 Mn-54 -4.39E+OO 2.52E+OO 6.96E+OO u TV OFS2-V 401692007 7/14/2016 Nb-95 4.68E+OO 2.50E+OO 7.75E+OO u TV OFS2-V 401692007 7/14/2016 Ru-103 -l.40E-Ol 2.18E+OO 7.27E+OO u TV OFS2-V 401692007 7/14/2016 Ru-106 -2.28E+Ol 2.00E+Ol 6.14E+Ol u TV OFS2-V 401692007 7/14/2016 Sb-124 2.42E+OO 5.03E+OO 1.49E+Ol u TV OFS2-V 401692007 7/14/2016 Sb-125 -7.IOE+OO 6.06E+OO l.91E+Ol u TV OFS2-V 401692007 7/14/2016 Se-75 2.65E+OO 2.98E+OO 9.68E+OO u TV OFS2-V 401692007 7/14/2016 Th-228 -4.15E+OO 5.94E+OO I.37E+Ol u TV OFS2-V 401692007 7/14/2016 Zn-65 -8.49E+OO 6.46E+OO 1.62E+Ol u TV OFS2-V 401692007 7/14/2016 Zr-95 -2.02E+OO 6.14E+OO UOE+Ol u TV ONS2-V 404202001 8/18/2016 Ac-228 -2.72E+Ol l.89E+Ol 3.94E+Ol u TV ONS2-V 404202001 8/18/2016 Ag-108m 1.56E+OO 2.14E+OO 7.27E+OO u TV ONS2-V 404202001 8/18/2016 Ag-llOm -L53E+OO 3.47E+OO I.08E+Ol u TV ONS2-V 404202001 8/18/2016 Ba-140 -I.34E+OO l.21E+Ol 4.02E+Ol u TV ONS2-V 404202001 8/18/2016 Be-7 2.20E+03 8.45E+Ol 7.16E+Ol TV ONS2-V 404202001 8/18/2016 Ce-141 -3.23E+OO 3.82E+OO I.20E+Ol u TV ONS2-V 404202001 8/18/2016 Ce-144 2.79E+OO 1.31E+Ol 4.30E+Ol u TV ONS2-V 404202001 8/18/2016 Co-57 -8.29E-01 l.77E+OO 5.74E+OO u TV ONS2-V 404202001 8/18/2016 Co-58 4.90E-01 2.54E+OO 8.25E+OO u TV ONS2-V 404202001 8/18/2016 Co-60 -3.41E-01 2.66E+OO 8.79E+OO u TV ONS2-V 404202001 8/18/2016 Cr-51 -l.23E+Ol 2.07E+Ol 6.94E+Ol u TV ONS2-V 404202001 8/18/2016 Cs-134 -l.02E+OO 2.84E+OO 8.99E+OO u TV ONS2-V 404202001 8/18/2016 Cs-137 4.25E+OO 5.26E+OO 8.29E+OO u TV ONS2-V 404202001 8/18/2016 Fe-59 2.49E+Ol 1.04E+Ol I.65E+Ol UI TV ONS2-V 404202001 8/18/2016 1-131 -6.82E-Ol 4.llE+OO 1.40E+Ol u TV ONS2-V 404202001 8/18/2016 K-40 1.97E+03 l.14E+02 6.06E+Ol TV ONS2-V 404202001 8/18/2016 La-140 -8.83E+OO 4.08E+OO 9.20E+OO u TV ONS2-V 404202001 8/18/2016 Mn-54 4.98E-Ol 2.35E+OO 7.62E+OO u TV ONS2-V 404202001 8/18/2016 Nb-95 -3.19E-Ol 2.34E+OO 7.54E+OO u TV ONS2-V 404202001 8118/2016 Ru-103 -3.71E+OO 2.57E+OO 7.71E+OO u TV ONS2-V 404202001 8/18/2016 Ru-106 -l.03E+Ol 2.23E+Ol 7.17E+Ol u TV ONS2-V 404202001 8/18/2016 Sb-124 -4.60E+OO 6.75E+OO 1.77E+Ol u D-63 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS2-V 404202001 8/18/2016 Sb-125 -4.57E+OO 9.13E+OO 2.15E+Ol u TV ONS2-V 404202001 8/18/2016 Se-75 2.18E-01 3.18E+OO l.OOE+Ol u TV ONS2-V 404202001 8/18/2016 Th-228 -6.29E+OO 6.91E+OO l.68E+Ol u TV ONS2-V 404202001 8/18/2016 Zn-65 l.90E+Ol l.05E+Ol L71E+Ol UI TV ONS2-V 404202001 8/18/2016 Zr-95 2.80E+OO 4.28E+OO l.41E+Ol u TV ONS2-V 404202002 8/18/2016 Ac-228 9.53E+Ol 3.22E+Ol 4.19E+Ol UI TV ONS2-V 404202002 8/18/2016 Ag-108m 5.61E-02 2.24E+OO 7.18E+OO u TV ONS2-V 404202002 8/18/2016 Ag-llOm -1.35E-01 3.15E+OO l.06E+Ol u TV ONS2-V 404202002 8/18/2016 Ba-140 8.25E+OO l.29E+Ol 4.16E+Ol u TV ONS2-V 404202002 8/18/2016 Be-7 6.98E+02 6.17E+Ol 7.33E+Ol TV ONS2-V 404202002 8/18/2016 Ce-141 3.09E+OO 4.15E+OO 1.24E+Ol u TV ONS2-V 404202002 8/18/2016 Ce-144 -9.85E+OO l.46E+Ol 4.51E+Ol u TV ONS2-V 404202002 8/18/2016 Co-57 1.61E+OO l.90E+OO 6.29E+OO u TV ONS2-V 404202002 8/18/2016 Co-58 8.38E-01 2.45E+OO 8.33E+OO U TV ONS2-V 404202002 8/18/2016 Co-60 2.43E+OO 2.78E+OO 9.33E+OO U TV ONS2-V 404202002 8/18/2016 Cr-51 1.04E+Ol 2.29E+Ol 7.47E+Ol U TV ONS2-V 404202002 8/18/2016 Cs-134 7.81E+OO 3.19E+OO 9.65E+OO U TV ONS2-V 404202002 8/18/2016 Cs-137 3.72E+Ol 5.57E+OO 8.13E+OO M TV ONS2-V 404202002 8/18/2016 Fe-59 4.14E+OO 5.08E+OO l.71E+Ol U TV ONS2-V 404202002 8/18/2016 I-131 . -3.45E+OO 4.17E+OO l.29E+Ol U TV ONS2-V 404202002 8/18/2016 K-40 2.72E+03 l.86E+02 9.23E+Ol TV ONS2-V 404202002 8/18/2016 La-140 -2.97E+OO 3.97E+OO l.22E+Ol u TV ONS2-V 404202002 8/18/2016 Mn-54 6.14E-01 2.39E+OO 8.lOE+OO u TV ONS2-V 404202002 8/18/2016 Nb-95 4.43E+OO 2.64E+OO 8.68E+OO u TV ONS2-V 404202002 8118/2016 Ru-103 4.21E-02 2.56E+OO 8.19E+OO u TV ONS2-V 404202002 8118/2016 Ru-106 -l.09E+Ol 2.32E+Ol 7.18E+Ol u TV ONS2-V 404202002 8/18/2016 Sb-124 9.30E-01 5.23E+OO l.72E+Ol u TV ONS2-V 404202002 8/18/2016 Sb-125 -3.44E-01 6.53E+OO 2.09E+Ol u TV ONS2-V 404202002 8/18/2016 Se-75 -6.19E-01 2.87E+OO 9.29E+OO u TV ONS2-V 404202002 8118/2016 Th-228 3.41E+OO 7.60E+OO l.59E+Ol u TV ONS2-V 404202002 8/18/2016 Zn-65 -l.38E+Ol 7.08E+OO l.57E+Ol u TV ONS2-V 404202002 8/18/2016 Zr-95 -6.12E-01 4.16E+OO l.40E+Ol u TV ONS2-V 404202003 8/18/2016 Ac-228 2.91E+Ol 2.53E+Ol 4.37E+Ol u TV ONS2-V 404202003 8/18/2016 Ag-108m 2.31E-02 2.lOE+OO 7.03E+OO u TV ONS2-V 404202003 8/18/2016 Ag-llOm -l.69E+OO 3.35E+OO l.03E+Ol u TV ONS2-V 404202003 8/18/2016 Ba-140 9.78E+OO l.18E+Ol 3.91E+Ol u TV ONS2-V 404202003 8/18/2016 Be-7 2.28E+03 l.19E+02 6.45E+Ol TV ONS2-V 404202003 8/18/2016 Ce-141 8.97E-01 7.93E+OO l.16E+Ol u TV ONS2-V 404202003 8/18/2016 Ce-144 -l.97E+Ol l.93E+Ol 4.64E+Ol u TV ONS2-V 404202003 8/18/2016 Co-57 l.lOE-01 l.95E+OO 5.89E+OO u TV ONS2-V 404202003 8/18/2016 Co-58 2.23E+OO 2.65E+OO 7.77E+OO u TV ONS2-V 404202003 8/18/2016 Co-60 1.32E+OO 2.74E+OO 9.18E+OO u TV ONS2-V 404202003 8/18/2016 Cr-51 l.21E+Ol 2.19E+Ol 7.49E+Ol u TV ONS2-V 404202003 8/18/2016 Cs-134 -9.04E-Ol 2.67E+OO 8.38E+OO u TV ONS2-V 404202003 8/18/2016 Cs-137 4.82E+OO 2.71E+OO 8.59E+OO u TV ONS2-V 404202003 8/18/2016 Fe-59 4.66E+OO 4.84E+OO l.64E+Ol u TV ONS2-V 404202003 8/18/2016 I-131 -2.13E+OO 4.32E+OO l.43E+Ol u TV ONS2-V 404202003 8/18/2016 K-40 l.13E+03 9.38E+Ol 7.09E+Ol TV ONS2-V 404202003 8/18/2016 La-140 O.OOE+OO O.OOE+OO l.39E+Ol u TV ONS2-V 404202003 8/18/2016 Mn-54 2.40E+OO 2.21E+OO 7.16E+OO u D-64 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TV ONS2-V 404202003 8/18/2016 Nb-95 6.03E-01 2.50E+OO 8.08E+OO u TV ONS2-V 404202003 8/18/2016 Ru-103 3.20E+OO 2.69E+OO 8.08E+OO u TV ONS2-V 404202003 8/18/2016 Ru-106 l.71E+Ol 2.19E+Ol 6.54E+Ol u TV ONS2-V 404202003 8/18/2016 Sb-124 2.87E-01 4.25E+OO 1.38E+Ol u TV ONS2-V 404202003 8/18/2016 Sb-125 7.79E+OO 6.74E+OO 2.24E+Ol u TV ONS2-V 404202003 8/18/2016 Se-75 -5.04E+OO 4.68E+OO 1.09E+OI u TV ONS2-V 404202003 8/18/2016 Th-228 7.74E-02 7.92E+OO 1.63E+OI u TV ONS2-V 404202003 8/18/2016 Zn-65 -3.55E-02 5.37E+OO l.58E+OI u TV ONS2-V 404202003 8/18/2016 Zr-95 -7.16E+OO 4.70E+OO 1.31E+Ol u TV ONS3-V 404202004 8/18/2016 Ac-228 -2.48E+OO l.21E+Ol 4.02E+Ol u TV ONS3-V 404202004 8/18/2016 Ag-108m 8.56E-01 2.30E+OO 7.74E+OO u TV ONS3-V 404202004 8/18/2016 Ag-llOm l.09E+OO 4.36E+OO 1.31E+Ol u TV ONS3-V 404202004 8/18/2016 Ba-140 -1.36E+Ol 1.58E+Ol 4.69E+OI u TV ONS3-V 404202004 8/18/2016 Be-7 2.09E+03 8.96E+Ol 8.0lE+Ol TV ONS3-V 404202004 8/18/2016 Ce-141 -l.12E+OI 4.28E+OO 1.05E+OI u TV ONS3-V 404202004 8/18/2016 Ce-144 5.38E+OO 1.21E+Ol 4.03E+Ol u TV ONS3-V 404202004 8/18/2016 Co-57 -1.45E+OO l.55E+OO 4.97E+OO u TV ONS3-V 404202004 8/18/2016 Co-58 2.36E+OO 2.79E+OO 9.59E+OO u TV ONS3-V 404202004 8/18/2016 Co-60 -3.04E+OO 3.15E+OO 9.33E+OO u TV ONS3-V 404202004 8/18/2016 Cr-51 -3.77E+OI 3.84E+Ol 8.39E+OI u TV ONS3-V 404202004 8/18/2016 Cs-134 -l.79E+OO 3.09E+OO 1.02E+Ol u TV ONS3-V 404202004 8/18/2016 Cs-137 2.03E+OO 3.13E+OO 1.02E+Ol u TV ONS3-V 404202004 8/18/2016 Fe-59 -7.64E+OO 6.77E+OO 2.04E+Ol u TV ONS3-V 404202004 8/18/2016 I-131 2.25E+OO 4.79E+OO 1.64E+Ol u TV ONS3-V 404202004 8/18/2016 K-40 2.20E+03 1.31E+02 9.78E+Ol TV ONS3-V 404202004 8/18/2016 La-140 -l.38E+Ol l.IOE+Ol 1.67E+Ol u TV ONS3-V 404202004 8/18/2016 Mn-54 -2.63E+OO 2.86E+OO 9.llE+OO u TV ONS3-V 404202004 8/18/2016 Nb-95 -8.05E+OO 4.59E+OO 9.56E+OO u TV ONS3-V 404202004 8/18/2016 Ru-103 2.48E+OO 2.89E+OO 9.61E+OO u TV ONS3-V 404202004 8/18/2016 Ru-106 -2.62E+Ol 2.82E+Ol 8.60E+Ol u TV ONS3-V 404202004 8/18/2016 Sb-124 4.29E+Ol 1.53E+Ol 2.49E+Ol UI TV ONS3-V 404202004 8/18/2016 Sb-125 -5.51E+OO 8.18E+OO 2.37E+Ol u TV ONS3-V 404202004 8/18/2016 Se-75 5.93E+OO 3.69E+OO 1.13E+Ol u TV ONS3-V 404202004 8/18/2016 Th-228 5.06E-01 8.89E+OO 1.59E+Ol u TV ONS3-V 404202004 8/18/2016 Zn-65 -3.37E+OO 7.27E+OO 2.02E+Ol u TV ONS3-V 404202004 8/18/2016 Zr-95 -1.31E+OO 6.llE+OO 1.70E+Ol u TV ONS3-V 404202005 8/18/2016 Ac-228 -1.28E+Ol l.81E+Ol 4.23E+Ol u TV ONS3-V 404202005 8/18/2016 Ag-108m 1.24E+OO 2.23E+OO 7.37E+OO u TV ONS3-V 404202005 8/18/2016 Ag-llOm -1.llE+OO 3.71E+OO 1.23E+Ol u TV ONS3-V 404202005 8/18/2016 Ba-140 1.86E+Ol 1.45E+Ol 4.69E+Ol u TV ONS3-V 404202005 8/18/2016 Be-7 l.19E+03 5.99E+Ol 7.81E+Ol TV ONS3-V 404202005 8/18/2016 Ce-141 -2.38E+Ol 9.70E+OO 1.36E+Ol u TV ONS3-V 404202005 8/18/2016 Ce-144 6.19E+OO 1.56E+Ol 4.92E+Ol u TV ONS3-V 404202005 8/18/2016 Co-57 -1.63E+OO 2.16E+OO 6.58E+OO u TV ONS3-V 404202005 8/18/2016 Co-58 -4.64E+OO 2.85E+OO 8.37E+OO u TV ONS3-V 404202005 8/18/2016 Co-60 3.18E-01 2.88E+OO 9.47E+OO u TV ONS3-V 404202005 8/18/2016 Cr-51 2.54E+Ol 2.49E+Ol 8.27E+Ol u TV ONS3-V 404202005 8/18/2016 Cs-134 1.35E+OO 2.86E+OO 8.73E+OO u TV ONS3-V 404202005 8/18/2016 Cs-137 -1.06E+Ol 5.91E+OO 1.24E+Ol u TV ONS3-V 404202005 8/1812016 Fe-59 -3.72E+OO 5.31E+OO 1.68E+Ol u 0-65

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS3-V 404202005 8/18/2016 I-131 6.74E+OO 4.81E+OO l.57E+Ol u TV ONS3-V 404202005 8/18/2016 K-40 l.97E+03 l.19E+02 9.08E+Ol TV ONS3-V 404202005 8/18/2016 La-140 -2.86E+OO 4.34E+OO l.32E+Ol u TV ONS3-V 404202005 8/18/2016 Mn-54 -1.39E+OO 2.53E+OO 8.32E+OO u TV ONS3-V 404202005 8/18/2016 Nb-95 7.95E+OO 4.20E+OO 8.68E+OO u TV ONS3-V 404202005 8/18/2016 Ru-103 l.19E+OO 2.79E+OO 9.14E+OO u TV ONS3-V 404202005 8/18/2016 Ru-106 7.84E+OO 2.61E+Ol 8.42E+Ol u TV ONS3-V 404202005 8/18/2016 Sb-124 3.23E+OO 6.65E+OO l.94E+Ol u TV ONS3-V 404202005 8/18/2016 Sb-125 -4.77E-01 7.15E+OO 2.34E+OI u TV ONS3-V 404202005 8/18/2016 Se-75 4.06E+OO 3.40E+OO 1.13E+Ol u TV ONS3-V 404202005 8/18/2016 Th-228 6.91E-01 7.46E+OO 1.75E+Ol u TV ONS3-V 404202005 8/18/2016 Zn-65 9.30E-02 5.99E+OO l.98E+Ol u TV ONS3-V 404202005 8/18/2016 Zr-95 -4.02E+OO 4.95E+OO l.61E+Ol u TV ONS3-V 404202006 8118/2016 Ac-228 l.07E+Ol 3.06E+Ol 5.29E+Ol u TV ONS3-V 404202006 8/18/2016 Ag-108m 4.02E+OO 2.91E+OO 9.67E+OO u TV ONS3-V 404202006 8/18/2016 Ag-llOm -7.90E+OO 4.71E+OO l.31E+Ol u TV ONS3-V 404202006 8/18/2016 Ba-140 -l.16E+Ol l.51E+Ol 4.85E+OI u TV ONS3-V 404202006 8/18/2016 Be-7 l.20E+03 7.30E+Ol 8.83E+Ol TV ONS3-V 404202006 8/18/2016 Ce-141 -1.00E+OI 5.53E+OO l.55E+OI u TV ONS3-V 404202006 8/18/2016 Ce-144 l.llE+Ol l.83E+Ol 5.90E+Ol u TV ONS3-V 404202006 8/18/2016 Co-57 -l.24E+OO 2.46E+OO 7.83E+OO u TV ONS3-V 404202006 8/18/2016 Co-58 l.15E+OO 3.06E+OO l.02E+Ol u TV ONS3-V 404202006 8/18/2016 Co-60 7.63E-Ol 6.53E+OO 1.31E+Ol u TV ONS3-V 404202006 8/18/2016 Cr-51 -6.86E+Ol 3.31E+Ol 8.38E+Ol u TV ONS3-V 404202006 8/18/2016 Cs-134 3.05E+OO 3.57E+OO l.18E+Ol u TV ONS3-V 404202006 8/18/2016 Cs-137 l.98E+Ol 6.74E+OO l.IOE+OI UI TV ONS3-V 404202006 8/18/2016 Fe-59 2.19E+OO 6.30E+OO l.84E+Ol u TV ONS3-V 404202006 8/18/2016 I-131 5.83E+OO 5.45E+OO l.85E+Ol u TV ONS3-V 404202006 8/18/2016 K-40 l.03E+03 l.09E+02 l.02E+02 TV ONS3-V 404202006 8/18/2016 La-140 -3.13E+OO 5.46E+OO l.53E+Ol U TV ONS3-V 404202006 8/18/2016 Mn-54 -l.60E+OO 2.81E+OO 8.87E+OO U TV ONS3-V 404202006 8/18/2016 Nb-95 5.llE-01 3.59E+OO l.06E+Ol U TV ONS3-V 404202006 8/18/2016 Ru-103 2.64E-OI 3.17E+OO l.07E+Ol U TV ONS3-V 404202006 8/18/2016 Ru-106 -2.96E+Ol 3.04E+OI 9.56E+Ol U TV ONS3-V 404202006 8/18/2016 Sb-124 -5.80E+OO 6.60E+OO 2.03E+Ol U TV ONS3-V 404202006 8/18/2016 Sb-125 5.47E+OO 7.77E+OO 2.65E+Ol U TV ONS3-V 404202006 8/18/2016 Se-75 -8.78E-OI 4.17E+OO l.30E+OI U TV ONS3-V 404202006 8/18/2016 Th-228 l.61E+OI l.14E+Ol 2.00E+Ol U TV ONS3-V 404202006 8/18/2016 Zn-65 5.16E+OO 6.75E+OO 2.21E+Ol U TV ONS3-V 404202006 8/18/2016 Zr-95 -8.77E+OO 5.82E+OO l.68E+Ol U TV OFSl-V 404202007 8/18/2016 Ac-228 4.91E+Ol 2.09E+OI 3.73E+Ol UI TV OFSl-V 404202007 8/18/2016 Ag-108m 1.18E+OO 1.72E+OO 5.83E+OO U TV OFSl-V 404202007 8/18/2016 Ag-llOm 3.22E+OO 3.09E+OO l.OlE+Ol U TV OFSl-V 404202007 8/18/2016 Ba-140 -9.98E+OO l.14E+OI 3.59E+OI U TV OFSl-V 404202007 8/18/2016 Be-7 2.05E+03 7.62E+OI 5.90E+OI TV OFSl-V 404202007 8/18/2016 Ce-141 -l.12E+Ol 4.42E+OO l.08E+OI u TV OFSl-V 404202007 8/18/2016 Ce-144 -l.19E+OI 1.26E+Ol 3.87E+Ol u TV OFSl-V 404202007 8/18/2016 Co-57 3.93E+OO 2.28E+OO 4.94E+OO u TV OFSl-V 404202007 8/18/2016 Co-58 7.94E-02 2.18E+OO 7.03E+OO u TV OFSl-V 404202007 8/18/2016 Co-60 -l.93E+OO 2.16E+OO 6.74E+OO u D-66 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV OFSl-V 404202007 8/18/2016 Cr-51 -4.22E+Ol 2.06E+Ol 5.85E+Ol u TV OFSl-V 404202007 8/18/2016 Cs-134 l.33E+OO 2.18E+OO 7.16E+OO u TV OFSl-V 404202007 8/18/2016 Cs-137 3.08E+OO 2.29E+OO 7.51E+OO u TV OFSl-V 404202007 8/18/2016 Fe-59 -6.20E+OO 4.59E+OO 1.39E+Ol u TV OFSl-V 404202007 8/18/2016 I-131 3.45E+OO 3.76E+OO l.27E+Ol u TV OFSl-V 404202007 8/18/2016 K-40 3.28E+03 l.36E+02 7.04E+OI TV OFSl-V 404202007 8/18/2016 La-140 -7.65E+OO 3.89E+OO 9.75E+OO u TV OFSl-V 404202007 8/18/2016 Mn-54 -2.85E-01 2.21E+OO 7.07E+OO u TV OFSl-V 404202007 8/18/2016 Nb-95 -l.75E+OO 2.43E+OO 7.55E+OO u TV OFSl-V 404202007 8/18/2016 Ru-103 -l.80E+OO 2.17E+OO 6.91E+OO u TV OFSl-V 404202007 8/18/2016 Ru-106 l.81E+OI l.96E+Ol 6.50E+Ol u TV OFSl-V 404202007 8/18/2016 Sb-124 -5.41E+OO 5.23E+OO l.29E+OI u TV OFSl-V 404202007 8/18/2016 Sb-125 9.24E-02 5.50E+OO l.85E+OI u TV OFSl-V 404202007 8/18/2016 Se-75 -6.39E-01 2.87E+OO 8.87E+OO u TV OFSl-V 404202007 8/18/2016 Th-228 7.51E+OO 8.73E+OO 1.15E+Ol u TV OFSl-V 404202007 8/18/2016 Zn-65 -2.02E+OO 4.88E+OO l.62E+Ol u TV OFSl-V 404202007 8/18/2016 Zr-95 -2.17E+OO 4.43E+OO l.24E+Ol u TV ONS2-V 405413001 9/6/2016 Ac-228 2.38E+Ol l.72E+Ol 3.71E+Ol u TV ONS2-V 405413001 9/6/2016 Ag-108m -2.49E+OO 2.0IE+OO 6.12E+OO u TV ONS2-V 405413001 9/6/2016 Ag-llOm -3.66E+OO 2.87E+OO 8.73E+OO u TV ONS2-V 405413001 9/6/2016 Ba-140 7.02E+OO l.OOE+OI 3.31E+OI u TV ONS2-V 405413001 9/6/2016 Be-7 3.30E+03 l.55E+02 5.77E+Ol TV ONS2-V 405413001 9/6/2016 Ce-141 -4.00E+OO 4.33E+OO l.02E+Ol u TV ONS2-V 405413001 9/6/2016 Ce-144 -1.80E+Ol l.30E+Ol 3.79E+Ol u TV ONS2-V 405413001 9/6/2016 Co-57 -l.99E+OO l.63E+OO 4.86E+OO u TV ONS2-V 405413001 9/6/2016 Co-58 -2.IIE+OO 2.IOE+OO 6.65E+OO u TV ONS2-V 405413001 9/6/2016 c6c6*o *** l.02E+OO 2.24E+OO 7.46E+OO u TV ONS2-V 405413001 9/6/2016 Cr-51 -l.41E+Ol l.94E+Ol 6.32E+Ol u TV ONS2-V 405413001 9/6/2016 Cs-134 l.63E+OO 2.12E+OO 6.86E+OO u TV ONS2-V 405413001 9/6/2016 Cs-137 -6.67E-OI 2.20E+OO 6.95E+OO u TV ONS2-V 405413001 9/6/2016 Fe-59 -3.36E+OO 4.60E+OO l.45E+Ol u TV ONS2-V 405413001 9/6/2016 I-131 5.09E+OO 3.51E+OO 1.15E+Ol u TV ONS2-V 405413001 9/6/2016 K-40 2.35E+03 1.44E+02 6.05E+Ol TV ONS2-V 405413001 9/6/2016 La-140 -7.06E+OO 3.61E+OO 8.58E+OO u TV ONS2-V 405413001 9/6/2016 Mn-54 -1.52E-Ol 2.12E+OO 7.18E+OO u TV ONS2-V 405413001 9/6/2016 Nb-95 l.47E+OO 2.22E+OO 7.16E+OO u TV ONS2-V 405413001 9/6/2016 Ru-103 -1.08E+OO 2.16E+OO 6.92E+OO u TV ONS2-V 405413001 9/6/2016 Ru-106 -1.26E+Ol l.98E+Ol 6.18E+Ol u TV ONS2-V 405413001 9/6/2016 Sb-124 -4.34E+OO 5.46E+OO 1.62E+Ol u TV ONS2-V 405413001 9/6/2016 Sb-125 3.14E-01 5.45E+OO l.81E+Ol u TV ONS2-V 405413001 9/6/2016 Se-75 9.57E-Ol 2.61E+OO 8.92E+OO u TV ONS2-V 405413001 9/6/2016 Th-228 -3.36E+OO 5.56E+OO l.35E+Ol u TV ONS2-V 405413001 9/6/2016 Zn-65 -l.67E+OO 4.70E+OO l.33E+Ol u TV ONS2-V 405413001 9/6/2016 Zr-95 3.0IE+OO 4.64E+OO l.23E+Ol u TV ONS2-V 405413002 9/6/2016 Ac-228 2.57E+Ol 2.48E+Ol 3.26E+Ol u TV ONS2-V 405413002 9/6/2016 Ag-108m -6.21E+OO 3.77E+OO 7.76E+OO u TV ONS2-V 405413002 9/6/2016 Ag-llOm -3.76E+OO 3.89E+OO 1.18E+OI u TV ONS2-V 405413002 9/6/2016 Ba-140 l.22E+Ol l.16E+Ol 3.92E+Ol u TV ONS2-V 405413002 9/6/2016 Be-7 1.13E+03 7.23E+Ol 8.13E+Ol TV ONS2-V 405413002 9/6/2016 Ce-141 2.83E+OO 4.45E+OO l.33E+Ol u D-67 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAJvfPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV . ONS2-V 405413002 9/6/2016 Ce-144 2.31E+Ol 1.71E+Ol 5.03E+Ol u TV ONS2-V 405413002 9/6/2016 Co-57 4.19E-01 2.04E+OO 6.63E+OO u TV ONS2-V 405413002 9/6/2016 Co-58 -1.46E-02 2.SOE+OO 9.17E+OO u TV ONS2-V 405413002 9/6/2016 Co-60 9.18E+OO 3.99E+OO 1.15E+Ol u TV ONS2-V 405413002 9/6/2016 Cr-51 l.33E+Ol 2.28E+Ol 7.88E+Ol u TV ONS2-V 405413002 9/6/2016 Cs-134. 5.88E+OO 3.03E+OO 9.76E+OO u TV ONS2-V 405413002 9/6/2016 Cs-137 6.21E+Ol 7.40E+OO 8.68E+OO TV ONS2-V 405413002 9/6/2016 Fe-59 -2.88E+OO 5.90E+OO 1.84E+Ol u TV ONS2-V 405413002 9/6/2016 I-131 -8.78E-01 4.24E+OO 1.44E+Ol u TV ONS2-V 405413002 9/6/2016 K-40 3.92E+03 1.69E+02 6.74E+Ol TV ONS2-V 405413002 9/6/2016 La-140 -8.66E+OO 4.58E+OO 1.19E+Ol u TV ONS2-V 405413002 9/6/2016 Mn-54 -2.28E+OO 2.68E+OO 8.27E+OO u TV ONS2-V 405413002 9/6/2016 Nb-95 -4.63E+OO 4.23E+OO 9.37E+OO u TV ONS2-V 405413002 9/6/2016 Ru-103 7.93E-02 2.56E+OO 8.63E+OO u TV ONS2-V 405413002 9/6/2016 Ru-106 -9.24E+OO 3.06E+Ol 9.00E+Ol u TV ONS2-V 405413002 9/6/2016 Sb-124 -3.25E+OO 5.81E+OO l.85E+Ol u TV 9/6/2016 7.llE+OO 2.42E+Ol u ONS2-V 405413002 Sb-125 TV ONS2-V 405413002 9/6/2016 Se-75 l.29E+OO 3.30E+OO 1.04E+Ol u TV ONS2-V 405413002 9/6/2016 Th-228 2.55E-01 9.82E+OO l.58E+Ol u TV ONS2-V 405413002 9/6/2016 Zn-65 1.14E+OO 6.26E+OO 2.02E+Ol u TV ONS2-V 405413002 9/6/2016 Zr-95 -4.36E+OO 4.99E+OO l.55E+Ol u TV ONS2-V 405413003 9/6/2016 Ac-228 2.43E+Ol 2.68E+Ol 5.04E+Ol u TV ONS2-V 405413003 9/6/2016 Ag-108m 8.49E-01 2.48E+OO 8.47E+OO u TV ONS2-V 405413003 9/6/2016 Ag-llOm -6.87E-01 4.07E+OO l.30E+Ol u TV ONS2-V 405413003 9/6/2016 Ba-140 -8.52E+OO 2.0lE+Ol 4.40E+OI u TV ONS2-V 405413003 9/6/2016 Be-7 2.40E+03 1.30E+02 8.27E+Ol TV ONS2-V 405413003 9/6/2016 Ce-141 -3.88E+OO 6.25E+OO l.39E+Ol u TV ONS2-V 405413003 9/6/2016 Ce-144 -1.02E+Ol 1.60E+Ol 5.03E+Ol u TV ONS2-V 405413003 9/6/2016 Co-57 -4.62E-01 2.0lE+OO 6.48E+OO u TV ONS2-V 405413003 9/6/2016 Co-58 4.37E-01 2.74E+OO 9.00E+OO u TV ONS2-V 405413003 9/6/2016 Co-60 -1.72E+OO 2.90E+OO 9.32E+OO u TV ONS2-V 405413003 9/6/2016 Cr-51 9.61E+OO 2.59E+Ol 8,95E+OI u TV ONS2-V 405413003 9/6/2016 Cs-134 4.20E+OO 3.17E+OO 1.05E+Ol u TV ONS2-V 405413003 9/6/2016 Cs-137 4.35E+OI 6.28E+OO 9.28E+OO M TV ONS2-V 405413003 9/6/2016 Fe-59 -1.SlE+OO 6.48E+OO 2.03E+Ol u TV ONS2-V 405413003 9/6/2016 I-131 9.70E+OO 7.20E+OO l.50E+Ol u TV ONS2-V 405413003 9/6/2016 K-40 2.37E+03 l.62E+02 8.81E+Ol TV ONS2-V 405413003 9/6/2016 La-140 -7.24E+OO 4.70E+OO 1.27E+OI u TV ONS2-V 405413003 9/6/2016 Mn-54 3.40E+OO 3.14E+OO l.04E+Ol u TV ONS2-V 405413003 9/6/2016 Nb-95 2.15E+OO 3.05E+OO 9.23E+OO u TV ONS2-V 405413003 9/6/2016 Ru-103 9.64E-OI 2.73E+OO 9.27E+OO u TV ONS2-V 405413003 9/6/2016 Ru-106 -9.39E+OO 2.16E+Ol 6.97E+OI u TV ONS2-V 405413003 9/6/2016 Sb-124 -9.55E+OO 6.31E+OO l.65E+Ol u TV ONS2-V 405413003 9/6/2016 Sb-125 -5.89E+OO 7.;2.7E+OO 2.35E+Ol u TV ONS2-V 405413003 9/6/2016 Se-75 l.93E+OO 4.02E+OO 1.ISE+Ol u TV ONS2-V 405413003 9/6/2016 Th-228 l.88E+OO 7.74E+OO 2.04E+OI u TV ONS2-V 405413003 9/6/2016 Zn-65 2.31E+OO 6.03E+OO 1.96E+Ol u TV ONS2-V 405413003 9/6/2016 Zr-95 3.40E+OO 4.81E+OO l.61E+Ol u TV ONS3-V 405413004 9/6/2016 Ac-228 4.94E+Ol 2.47E+Ol 3.99E+Ol UI TV 405413004 9/6/2016 Ag-108m -2.lSE-01 2.82E+OO 9.02E+OO u D-68 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS3-V 405413004 9/6/2016 Ag-1 lOrn -6.63E-01 4.30E+OO 1.43E+Ol u TV ONS3-V 405413004 9/6/2016 Ba-140 5.46E+Ol 3.16E+Ol 5.67E+Ol u TV ONS3-V 405413004 9/6/2016 Be-7 2.98E+03 1.63E+02 8.40E+Ol TV ONS3-V 405413004 9/6/2016 Ce-141 9.73E+OO 5.37E+OO 1.68E+Ol u TV ONS3-V 405413004 9/6/2016 Ce-144 -8.37E+OO 1.91E+Ol 6.23E+Ol u TV ONS3-V 405413004 9/6/2016 Co-57 8.96E-01 2.83E+OO 8.47E+OO u TV ONS3-V 405413004 9/6/2016 Co-58 3.42E+OO 2.96E+OO l.OIE+Ol u TV ONS3-V 405413004 9/6/2016 Co-60 -2.63E+OO 3.37E+OO l.04E+Ol u TV ONS3-V 405413004 9/6/2016 Cr-51 -3.69E+Ol 3.00E+Ol 8.95E+Ol u TV ONS3-V 405413004 9/6/2016 Cs-134 -2.94E+OO 3.93E+OO l.IOE+Ol u TV ONS3-V 405413004 9/6/2016 Cs-137 7.61E-01 3.70E+OO 1.12E+Ol u TV ONS3-V 405413004 9/6/2016 Fe-59 4.47E+Ol 2.65E+Ol 2.34E+Ol UI TV ONS3-V 405413004 9/6/2016 I-131 -6.37E+OO 5.79E+OO l.74E+Ol u TV ONS3-V 405413004 9/6/2016 K-40 3.74E+03 2.48E+02 8.00E+Ol TV ONS3-V 405413004 9/6/2016 La-140 -8.llE+OO 5.51E+OO l.48E+Ol u TV ONS3-V 405413004 9/6/2016 Mn-54 2.13E+OO 3.12E+OO*

9.54E+OO u TV ONS3-V 405413004 9/6/2016 Nb-95 2.27E+OO 3.75E+OO l.14E+Ol u TV ONS3-V 405413004 9/6/2016 Ru-103 5.77E-01 3.27E+OO l.05E+Ol u TV ONS3-V 405413004 9/6/2016 Ru-106 3.78E+Ol 3.08E+Ol 9.86E+Ol u TV ONS3-V 405413004 9/6/2016 Sb-124 -4.84E+OO 7.91E+OO 2.43E+Ol u TV ONS3-V 405413004 9/6/2016 Sb-125 7.75E+OO 8.58E+OO 2.78E+Ol u TV ONS3-V 405413004 9/6/2016 Se-75 -8.59E-01 4.35E+OO l.26E+Ol u TV ONS3-V 405413004 9/6/2016 Th-228 -9.69E+OO 9.40E+OO 2.09E+Ol u TV ONS3-V 405413004 9/6/2016 Zn-65 -1.75E+OO 8.31E+OO 2.39E+Ol u TV ONS3-V 405413004 9/6/2016 Zr-95 3.45E-02 5.40E+OO 1.82E+Ol u TV ONS3-V 405413005 9/6/2016 Ac-228 4.12E+Ol 2.72E+Ol 4.97E+Ol u TV ONS3-V 405413005 9/6/2016 Ag-108rn -5.22E+OO 2.83E+OO 7.88E+OO u TV ONS3-V 405413005 9/6/2016 Ag-llOrn -1.27E+OO 4.60E+OO 1.44E+Ol u TV ONS3-V 405413005 9/6/2016 Ba-140 l.98E+Ol 1.46E+Ol 4.89E+Ol u TV ONS3-V 405413005 9/6/2016 Be-7 1.43E+03 9.54E+Ol 8.05E+Ol TV ONS3-V 405413005 9/6/2016 Ce-141 -9.31E+OO 6.81E+OO 1.54E+Ol u TV ONS3-V 405413005 9/6/2016 Ce-144 -1.0IE+Ol 2.74E+Ol 5.85E+Ol u TV ONS3-V 405413005 9/6/2016 Co-57 1.87E+OO 2.27E+OO 7.38E+OO u TV ONS3-V 405413005 9/6/2016 Co-58 -2.23E+OO 3.39E+OO l.04E+Ol u TV ONS3-V 405413005 9/6/2016 Co-60 -3.43E+OO 2.95E+OO 8.48E+OO u TV ONS3-V 405413005 9/6/2016 Cr-51 -8.84E+OO 2.76E+Ol 9.30E+Ol u TV ONS3-V 405413005 9/6/2016 Cs-134 6.86E+OO 4.02E+OO 1.29E+Ol u TV ONS3-V 405413005 9/6/2016 Cs-137 -2.27E+OO 5.03E+OO 9.87E+OO u TV ONS3-V 405413005 9/6/2016 Fe-59 l.34E-01 7.14E+OO 2.13E+Ol u TV ONS3-V 405413005 9/6/2016 I-131 -5.21E+OO 5.22E+OO 1.66E+Ol u TV ONS3-V 405413005 9/6/2016 K-40 2.68E+03 l.82E+02 9.16E+Ol TV ONS3-V 405413005 9/6/2016 La-140 -7.35E+OO 4.88E+OO l.25E+Ol u TV ONS3-V 405413005 9/6/2016 Mn-54 4.52E-01 3.16E+OO 1.02E+Ol u TV ONS3-V 405413005 9/6/2016 Nb-95 2.22E-01 3.29E+OO 1.06E+Ol u TV ONS3-V 405413005 9/6/2016 Ru-103 1.44E+OO 3.lOE+OO 1.04E+Ol u TV ONS3-V 405413005 9/6/2016 Ru-106 -l.25E+Ol 3.14E+Ol 8.92E+Ol u TV ONS3-V 405413005 9/6/2016 Sb-124 -7.39E+OO 8.18E+OO 2.40E+Ol u TV ONS3-V 405413005 9/6/2016 Sb-125 -2.65E+OO 8.02E+OO 2.65E+Ol u TV ONS3-V 405413005 9/6/2016 Se-75 -4.92E+OO 4.00E+OO 1.27E+Ol u TV ONS3-V 405413005 9/6/2016 Th-228 4.96E+OO l.04E+Ol 2.14E+Ol u D-69 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) TV ONS3-V 405413005 9/6/2016 Zn-65 7.73E+OO 7.llE+OO 2.44E+Ol u TV ONS3-V 405413005 9/6/2016 Zr-95 -2.49E+OO 6.03E+OO 1.90E+Ol u TV ONS3-V 405413006 9/6/2016 Ac-228 3.68E+Ol 2.92E+Ol 4.96E+Ol u TV ONS3-V 405413006 9/6/2016 Ag-108m -2.67E+OO 3.86E+OO 9.0lE+OO u TV ONS3-V 405413006 9/6/2016 Ag-llOm -l.91E+OO 4.56E+OO l.41E+Ol u TV ONS3-V 405413006 9/6/2016 Ba-140 -2.25E+Ol l.93E+Ol 4.73E+Ol u TV ONS3-V 405413006 9/6/2016 Be-7 3.13E+03 l.58E+02 8.89E+Ol TV ONS3-V 405413006 9/6/2016 Ce-141 l.20E+Ol l.09E+Ol l.49E+Ol u TV ONS3-V 405413006 9/6/2016 Ce-144 4.94E+OO l.81E+Ol 5.90E+Ol u TV ONS3-V 405413006 9/6/2016 Co-57 -8.46E-01 2.37E+OO 7.64E+OO u TV ONS3-V 405413006 9/6/2016 Co-58 3.05E-Ol 3.21E+OO l.03E+Ol u TV ONS3-V 405413006 9/6/2016 Co-60 8.18E-01 3.41E+OO l.14E+Ol u TV ONS3-V 405413006 9/6/2016 Cr-51 -7.65E+OO 2.78E+Ol 9.39E+Ol u TV ONS3-V 405413006 9/6/2016 Cs-134 5.28E-01 3.38E+OO l.09E+Ol u TV ONS3-V 405413006 9/6/2016 Cs-137 3.93E+OO 3.53E+OO l.06E+Ol u TV ONS3-V 405413006 9/6/2016 Fe-59 -9.14E+OO 9.07E+OO 2.25E+Ol u TV ONS3-V 405413006 9/6/2016 1-131 -1.llE+Ol 6.85E+OO l.81E+Ol u TV ONS3-V 405413006 9/6/2016 K-40 6.08E+03 3.18E+02 l.03E+02 TV ONS3-V 405413006 9/6/2016 La-140 l.32E-01 4.68E+OO l.52E+Ol u TV ONS3-V 405413006 9/6/2016 Mn-54 4.08E+OO 3.17E+OO l.03E+Ol u TV ONS3-V 405413006 9/6/2016 Nb-95 5.25E+OO 4.00E+OO l.19E+Ol u TV ONS3-V 405413006 9/6/2016 Ru-103 3.15E-01 3.lOE+OO l.03E+Ol u TV ONS3-V 405413006 9/6/2016 Ru-106 -8.62E-01 2.79E+Ol 9.08E+Ol u TV ONS3-V 405413006 9/6/2016 Sb-124 3.41E+Ol l.44E+Ol 2.88E+Ol ill TV ONS3-V 405413006 9/6/2016 Sb-125 -l.21E+OO 7.60E+OO 2.53E+Ol u TV ONS3-V 405413006 9/6/2016 Se-75 l.31E+OO 4.18E+OO l.31E+Ol u TV ONS3-V 405413006 9/6/2016 111-228 7.55E+OO l.12E+Ol 2.07E+Ol u TV ONS3-V 405413006 9/6/2016 Zn-65 -6.llE+OO 8.19E+OO 2.61E+Ol u TV ONS3-V 405413006 9/6/2016 Zr-95 2.26E+OO 5.23E+OO l.71E+Ol u TV OFSl-V 405413007 9/6/2016 Ac-228 7.59E+Ol 3.60E+Ol 5.96E+Ol ill TV OFSl-V 405413007 9/6/2016 Ag-108m 1.27E+OO 2.81E+OO 9.42E+OO u TV OFSl-V 405413007 9/6/2016 Ag-llOm -4.32E+OO 5.16E+OO l.53E+Ol u TV OFSl-V 405413007 9/6/2016 Ba-140 l.83E+Ol l.67E+Ol 5.54E+Ol u TV OFSl-V 405413007 9/6/2016 Be-7 l.34E+03 8.49E+Ol 9.79E+Ol TV OFSl-V 405413007 9/6/2016 Ce-141 -4.88E+OO 5.38E+OO l.60E+Ol u TV OFSl-V 405413007 9/6/2016 Ce-144 -8.09E+OO l.82E+Ol 5.60E+Ol u TV OFSl-V 405413007 9/6/2016 Co-57 -2.90E+OO 2.43E+OO 7.07E+OO u TV OFSl-V 405413007 9/6/2016 Co-58 3.49E+OO 3.48E+OO l.14E+Ol u TV OFSl-V 405413007 9/6/2016 Co-60 6.29E+OO 3.98E+OO l.35E+Ol u TV OFSl-V 405413007 9/6/2016 Cr-51 l.14E+Ol 2.84E+Ol 9.63E+Ol u TV OFSl-V 405413007 9/6/2016 Cs-134 5.74E+OO 4.04E+OO 1.27E+Ol u TV OFSl-V 405413007 9/6/2016 Cs-137 3.18E+OO 3.99E+OO l.31E+Ol u TV OFSl-V 405413007 9/6/2016 Fe-59 l.72E+Ol 1.02E+Ol 2.40E+Ol u TV OFSl-V 405413007 9/6/2016 I-131 -3.75E+OO 5.49E+OO l.77E+Ol u TV OFSl-V 405413007 9/6/2016 K-40 2.26E+03 l.48E+02 7.47E+Ol TV OFSl-V 405413007 9/6/2016 La-140 -l.16E+Ol 6.17E+OO 1.51E+Ol u TV OFSl-V 405413007 9/6/2016 Mn-54 3.65E+OO 3.58E+OO l.17E+Ol u TV OFSl-V 405413007 9/6/2016 Nb-95 -6.88E+OO 5.15E+OO l.09E+Ol u TV OFSl-V 405413007 9/6/2016 Ru-103 -4.16E+OO 3.40E+OO l.OlE+Ol u TV OFSl-V 405413007 9/6/2016 Ru-106 -3.21E+Ol 3.25E+Ol 9.82E+Ol u D-70 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCVkg) (pCVkg) (pCVkg) TV OFSl-V 405413007 9/6/2016 Sb-124 l.46E+Ol 8.88E+OO 3.05E+Ol u TV OFSl-V 405413007 9/6/2016 Sb-125 l.94E+Ol 9.56E+OO 3.03E+Ol u TV OFSl-V 405413007 9/6/2016 Se-75 -l.17E-Ol 4.0lE+OO l.36E+Ol u TV OFSl-V 405413007 9/6/2016 -l.59E+OI 8.64E+OO 2.06E+OI u TV OFSl-V 405413007 9/6/2016 Zn-65 8.84E+OO 7.52E+OO 2.58E+Ol u TV OFSl-V 405413007 9/6/2016 Zr-95 1.18E+OO 6.03E+OO l.96E+Ol u D-71 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 388922023 1/6/2016 Ac-228 -8.62E+OO 5.12E+OO l.16E+Ol u WD STJ 388922023 1/6/2016 Ag-108m -4.49E-01 6.93E-01 2.22E+OO u WD STJ 388922023 1/6/2016 Ag-llOm -6.00E-01 8.37E-01 2.19E+OO u WD STJ 388922023 1/6/2016 Ba-140 2.05E+OO 4.12E+OO 1.35E+Ol u WD STJ 388922023 1/6/2016 Be-7 4.90E+OO 6.93E+OO 2.29E+Ol u WD STJ 388922023 1/6/2016 BETA -9.83E-01 7.76E-01 2.81E+OO u WD STJ 388922023 1/6/2016 Ce-141 -4.79E+OO 2.40E+OO 4.39E+OO u WD STJ 388922023 1/6/2016 Ce-144 2.58E+OO 4.93E+OO l.63E+Ol u WD STJ 388922023 1/6/2016 Co-57 5.66E-02 9.lOE-01 2.21E+OO u WD STJ 388922023 1/6/2016 Co-58 -l.91E+OO l.lOE+OO 2.59E+OO u WD STJ 388922023 1/6/2016 Co-60 -7.91E-01 1.05E+OO 2.81E+OO u WD STJ 388922023 1/6/2016 Cr-51 -7.39E-01 7.15E+OO 2.40E+Ol u WD STJ 388922023 1/6/2016 Cs-134 7.68E-01 9.78E-01 3.03E+OO U WD STJ 388922023 1/6/2016 Cs-137 5.18E-01 8.63E-01 2.80E+OO U WD STJ 388922023 1/6/2016 Fe-59 2.05E+OO l.69E+OO 5.59E+OO u WD STJ 388922023 1/6/2016 I-131 -1.28E+OO l.39E+OO 4.40E+OO u WD STJ 388922023 1/6/2016 K-40 -1.69E+Ol l.70E+Ol 3.89E+Ol u WD STJ 388922023 1/6/2016 La-140 -8.90E-01 l.30E+OO 4.03E+OO u WD STJ 388922023 1/6/2016 Mn-54 -1.00E+OO 8.43E-01 2.38E+OO u WD STJ 388922023 1/6/2016 Nb-95 -1.53E-01 7.88E-01 2.61E+OO u WD STJ 388922023 1/6/2016 Ru-103 -9.15E-01 9.14E-01 2.81E+OO u WD STJ 388922023 1/6/2016 Ru-106 -8.09E+OO 7.41E+OO 2.20E+Ol u WD STJ 388922023 1/6/2016 Sb-124 -5.17E-01 2.08E+OO 6.69E+OO u WD STJ 388922023 1/6/2016 Sb-125 9.40E-01 2.llE+OO 7.03E+OO u WD STJ 388922023 1/6/2016 Se-75 -2.66E-01 9.88E-01 3.34E+OO u WD STJ 388922023 1/6/2016 Th-228 1.47E-01 2.32E+OO 5.57E+OO u WD STJ 388922023 1/6/2016 Zn-65 -3.31E+OO 1.90E+OO 5.0IE+OO u WD STJ 388922023 1/6/2016 Zr-95 -1.18E-01 l.41E+OO 4.72E+OO u WD STJ 388922024 1/6/2016 I-131 2.42E-01 2.65E-01 8.18E-01 u WD LTW 388922025 1/6/2016 Ac-228 1.82E+OO 3.57E+OO 7.92E+OO u WD LTW 388922025 1/6/2016 Ag-108m -6.92E-01 5.15E-01 l.53E+OO u WD LTW 388922025 1/6/2016 Ag-llOm l.65E-01 5.28E-01 1.79E+OO u WD LTW 388922025 1/6/2016 Ba-140 -8.62E-01 2.87E+OO 9.llE+OO u WD LTW 388922025 1/6/2016 Be-7 -3.45E+OO 4.74E+OO 1.48E+Ol u WD LTW 388922025 1/6/2016 BETA l.32E+OO 1.15E+OO 3.54E+OO u WD LTW 388922025 1/6/2016 Ce-141 -8.19E-01 l.13E+OO 3.53E+OO u WD LTW 388922025 1/6/2016 Ce-144 -4.66E+OO 4.09E+OO l.24E+Ol u WD LTW 388922025 1/6/2016 Co-57 -6.51E-01 5.47E-01 l.66E+OO u WD LTW 388922025 1/6/2016 Co-58 8.90E-01 5.98E-01 1.96E+OO u WD LTW 388922025 1/6/2016 Co-60 1.88E-01 6.07E-Ol 2.05E+OO u WD LTW 388922025 1/6/2016 Cr-51 -4.07E+OO 5.53E+OO 1.78E+Ol u WD LTW 388922025 1/6/2016 Cs-134 -7.50E-01 8.0IE-01 1.83E+OO u WD LTW 388922025 1/6/2016 Cs-137 2.lOE-01 5.67E-OI l.92E+OO u WD LTW 388922025 1/6/2016 Fe-59 -3.26E-01 l.llE+OO 3.52E+OO u WD LTW 388922025 1/6/2016 I-131 -1.04E+OO 1.23E+OO 3.39E+OO u WD LTW 388922025 1/6/2016 K-40 7.44E+OO 1.05E+Ol 1.90E+Ol u WD LTW 388922025 1/6/2016 La-140 -1.0SE-01 1.0IE+OO 2.84E+OO u WD LTW 388922025 1/6/2016 Mn-54 5.42E-01 5.37E-01 l.79E+OO u WD LTW 388922025 1/6/2016 Nb-95 4.42E-01 6.07E-01 2.03E+OO u WD LTW 388922025 1/6/2016 Ru-103 3.58E-01 8.37E-01 l.75E+OO u D-72 Donald C. Cool< Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 388922025 1/6/2016 Ru-106 -3.60E+OO 4.80E+OO 1.55E+Ol u WD LTW 388922025 1/6/2016 Sb-124 9.39E+OO 3.53E+OO 4.74E+OO UI WD LTW 388922025 116/2016 Sb-125 7.68E-01 l.58E+OO 5.20E+OO u WD LTW 388922025 1/6/2016 Se-75 -5.36E-01 7.70E-Ol 2.51E+OO u WD LTW 388922025 1/6/2016 Th-228 1.75E+OO 2.44E+OO 3.98E+OO u WD LTW 388922025 1/6/2016 Zn-65 -1.29E+OO 1.16E+OO 3.40E+OO u WD LTW 388922025 1/6/2016 Zr-95 8.91E-Ol l.OOE+OO 3.36E+OO u WD LTW 388922026 1/6/2016 I-131 -l.57E-Ol 2.51E-OI 8.49E-Ol u WD STJ 389873023 1/20/2016 Ac-228 -8.73E+OO 6.92E+OO 2.06E+Ol u WD STJ 389873023 1/20/2016 Ag-108m -3.83E-01 l.30E+OO 4.15E+OO u WD STJ 389873023 1/20/2016 Ag-llOm . -2.73E+OO l.35E+OO 3.13E+OO u WD STJ 389873023 1/20/2016 Ba-140 -7.12E+OO 5.79E+OO 1.58E+Ol u WD STJ 389873023 1/20/2016 Be-7 2.26E+Ol l.38E+Ol 4.61E+Ol u WD STJ 389873023 1/20/2016 BETA 3.63E+OO l.29E+OO 3.73E+OO u WD STJ 389873023 1/20/2016 Ce-141 9.87E-01 2.56E+OO 8.33E+OO u WD STJ 389873023 1/20/2016 Ce-144 -9.46E+OO 9.85E+OO 2.96E+Ol u WD STJ 389873023 1/20/2016 Co-57 -4.49E-01 1.25E+OO 3.96E+OO u WD STJ 389873023 1/20/2016 Co-58 -2.24E-Ol l.31E+OO 4.26E+OO u WD STJ 389873023 1/20/2016 Co-60 2.12E+OO 1.32E+OO 4.97E+OO u WD STJ 389873023 1/20/2016 Cr-51 -5.39E+OO 1.IOE+Ol 3.54E+Ol u WD STJ 389873023 1/20/2016 Cs-134 6.76E-01 1.45E+OO 4.98E+OO u WD STJ 389873023 1/20/2016 Cs-137 2.74E+OO l.61E+OO 5.61E+OO u WD STJ 389873023 1/20/2016 Fe-59 4.80E-Ol 2.86E+OO 9.40E+OO u WD STJ 389873023 1/20/2016 I-131 -2.49E+OO l.99E+OO 5.79E+OO u WD STJ 389873023 1/20/2016 K-40 -8.95E+OO l.89E+Ol 6.30E+Ol u WD STJ 389873023 1/20/2016 La-140 2.79E+OO l.70E+OO 6.50E+OO u WD STJ 389873023 1/20/2016 Mn-54 -1.87E+OO l.70E+OO 3.98E+OO u WD STJ 389873023 1/20/2016 Nb-95 2.93E+OO l.60E+OO 5.15E+OO u WD STJ 389873023 1/20/2016 Ru-103 -l.67E+OO 1.55E+OO 4.47E+OO u WD STJ 389873023 1120/2016 Ru-106 6.26E+Ol 2.76E+Ol 3.92E+Ol UI WD STJ 389873023 1/20/2016 Sb-124 -3.92E+OO 3.16E+OO 7.57E+OO u WD STJ 389873023 1/20/2016 Sb-125 4.21E+OO 3.52E+OO l.21E+Ol u WD STJ 389873023 1/20/2016 Se-75 -5.26E-Ol 2.04E+OO 5.92E+OO u WD STJ 389873023 1/20/2016 Th-228 2.45E+OO 3.17E+OO l.llE+Ol u WD STJ 389873023 1/20/2016 Zn-65 -4.34E+OO 3.23E+OO 8.18E+OO u WD STJ 389873023 1/20/2016 Zr-95 2.86E+OO 2.41E+OO 8.50E+OO u WD STJ 389873024 1/20/2016 I-131 -4.21E-02 2.51E-01 8.34E-Ol u WD LTW 389873025 1/20/2016 Ac-228 8.29E+OO 6.75E+OO 2.44E+Ol u WD LTW 389873025 1/20/2016 Ag-108m 2.07E-Ol l.31E+OO 4.41E+OO u WD LTW 389873025 1/20/2016 Ag-llOm -8.58E-03 1.41E+OO 4.58E+OO u WD LTW 389873025 1120/2016 Ba-140 -8.90E+OO 6.98E+OO 2.02E+Ol u WD LTW 389873025 1/20/2016 Be-7 1.12E+OO 1.25E+Ol 4.17E+Ol u WD LTW 389873025 1/20/2016 BETA -1.34E-Ol 1.0IE+OO 3.32E+OO u WD LTW 389873025 1120/2016 Ce-141 l.82E+OO 2.48E+OO 9.llE+OO u WD LTW 389873025 1/20/2016 Ce-144 -9.56E+OO I.06E+Ol 3.28E+Ol u WD LTW 389873025 1/20/2016 Co-57 2.60E-Ol l.36E+OO 4.64E+OO u WD LTW 389873025 1/20/2016 Co-58 l.97E-02 l.23E+OO 4.15E+OO u WD LTW 389873025 1/20/2016 Co-60 -2.64E+OO 2.43E+OO 6.06E+OO u WD LTW 389873025 1/20/2016 Cr-51 5.85E+OO 1.43E+Ol 4.15E+Ol u WD LTW 389873025 1/20/2016 Cs-134 -7.34E-Ol 1.40E+OO 4.45E+OO u D-73 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 389873025 1120/2016 Cs-137 l.23E-01 1.37E+OO 4.50E+OO u WD LTW 389873025 1/20/2016 Fe-59 -2.20E+OO 3.85E+OO 9.92E+OO u WD LTW 389873025 1/20/2016 1-131 -l.13E+OO 2.24E+OO 6.91E+OO u WD LTW 389873025 1120/2016 K-40 1.39E+Ol l.80E+Ol 6.79E+Ol u WD LTW 389873025 1120/2016 La-140 8.90E-01 l.93E+OO 6.71E+OO u WD LTW 389873025 1120/2016 Mn-54 3.06E-01 l.83E+OO 5.38E+OO u WD LTW 389873025 1/20/2016 Nb-95 l.02E-01 l.63E+OO 5.16E+OO u WD LTW 389873025 1/20/2016 Ru-103 l.22E+OO l.57E+OO 5.36E+OO u WD LTW 389873025 1/20/2016 Ru-106 -2.0lE+OO 1.19E+Ol 3.83E+Ol u WD LTW 389873025 1120/2016 Sb-124 -2.25E-01 3.33E+OO l.09E+Ol u WD LTW 389873025 1120/2016 Sb-125 2.79E+OO 4.23E+OO l.42E+Ol u WD LTW 389873025 1/20/2016 Se-75 2.46E+OO 2.36E+OO 7.02E+OO u WD LTW 389873025 1120/2016 Th-228 l.99E+OO 4.25E+OO l.24E+Ol u WD LTW 389873025 1120/2016 Zn-65 -3.90E+OO 3.96E+OO 9.20E+OO u WD LTW 389873025 1120/2016 Zr-95 4.21E+OO 2.65E+OO 9.07E+OO u WD LTW 389873026' 1/2012016 1-131 -l.96E-01 2.42E-01 8.38E-01 u WD STJ 390825023 2/3/2016 Ac-228 6.79E+OO . 4.64E+OO l.59E+Ol u WD STJ 390825023 2/3/2016 Ag-108m l.88E+OO 1.15E+OO 3.77E+OO u WD STJ 390825023 2/3/2016 Ag-llOm -2.08E+OO l.49E+OO 3.88E+OO u WD STJ 390825023 2/3/2016 Ba-140 -5.52E+OO 6.37E+OO l.98E+Ol u WD STJ 390825023 2/3/2016 Be-7 -2.24E+Ol l.45E+Ol 3.22E+Ol u WD STJ 390825023 2/3/2016 BETA 5.65E-01 1.16E+OO 3.72E+OO u WD STJ 390825023 2/3/2016 Ce-141 2.70E-01 2.30E+OO 7.33E+OO u WD STJ 390825023 2/3/2016 Ce-144 -6.72E+OO 8.44E+OO 2.57E+Ol u WD STJ 390825023 2/3/2016 Co-57 3.69E-01 1.IOE+OO 3.57E+OO u WD STJ 390825023 2/3/2016 Co-58 l.06E+OO l.25E+OO 4.26E+OO u WD STJ 390825023 2/3/2016 Co-60 2.60E+OO l.20E+OO 4.25E+OO u WD STJ 390825023 2/3/2016 Cr-51 -6.41E+OO l.25E+Ol 3.43E+Ol u WD STJ 390825023 2/3/2016 Cs-134 l.22E+OO l.26E+OO 4.32E+OO u WD STJ 390825023 2/3/2016 Cs-137 6.88E-01 l.43E+OO 4.25E+OO u WD STJ 390825023 2/3/2016 Fe-59 -7.69E-01 2.46E+OO 6.75E+OO u .WD STJ 390825023 2/3/2016 1-131 -8.58E-01 2.45E+OO 7.80E+OO u WD STJ 390825023 2/3/2016 K-40 4.27E+OO l.38E+Ol 3.27E+Ol u WD STJ 390825023 2/3/2016 La-140 4.06E+OO 2.55E+OO 8.21E+OO u WD STJ 390825023 2/3/2016 Mn-54 3.79E-01 1.03E+OO 3.44E+OO u WD STJ 390825023 2/3/2016 Nb-95 5.78E-01 l.20E+OO 4.04E+OO u WD STJ 390825023 2/3/2016 Ru-103 1.62E+OO 1.38E+OO 4.74E+OO u WD STJ 390825023 2/3/2016 Ru-106 2.55E+Ol l.27E+Ol 4.20E+Ol u WD STJ 390825023 2/3/2016 Sb-124 3.65E+OO 2.88E+OO l.05E+Ol u WD STJ 390825023 2/3/2016 Sb-125 3.31E+OO 3.35E+OO l.llE+Ol u WD STJ 390825023 2/3/2016 Se-75 3.88E-01 l.64E+OO 5.47E+OO u WD STJ 390825023 2/3/2016 Th-228 4.71E+OO 5.15E+OO 8.28E+OO u WD STJ 390825023 2/3/2016 Zn-65 -8.16E-02 2.39E+OO 7.95E+OO u WD STJ 390825023 2/3/2016 Zr-95 7.lOE-01 2.lOE+OO 7.03E+OO u WD STJ 390825024 2/3/2016 1-131 -2.26E-01 l.97E-OI 7.17E-01 u WD LTW 390825025 2/3/2016 Ac-228 -l.41E+OO 5.75E+OO 1.84E+Ol u WD LTW 390825025 2/3/2016 Ag-108m -7.75E-01 1.lOE+OO 3.35E+OO u WD LTW 390825025 2/3/2016 Ag-llOm -2.19E+OO l.75E+OO 4.76E+OO u WD LTW 390825025 2/3/2016 Ba-140 9.48E-01 5.66E+OO l.84E+Ol u WD LTW 390825025 2/3/2016 Be-7 -l.09E+Ol l.lOE+Ol 3.20E+Ol u D-74 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

WD LTW 390825025 2/3/2016 BETA l.32E-01 1.04E+OO 3.36E+OO u WD LTW 390825025 2/3/2016 Ce-141 4.49E+OO 3.lOE+OO 9.05E+OO u WD LTW 390825025 2/3/2016 Ce-144 1.14E+Ol 9.87E+OO 3.22E+Ol u WD LTW 390825025 2/3/2016 Co-57 4.86E+OO 1.85E+OO 3.72E+OO UI WD LTW 390825025 2/3/2016 Co-58 -7.68E-01 l.30E+OO 4.00E+OO u WD LTW 390825025 2/3/2016 Co-60 4.90E-01 1.07E+OO 3.71E+OO u WD LTW 390825025 2/3/2016 Cr-51 7.lOE+OO 1.42E+Ol 4.64E+Ol u WD LTW 390825025 2/3/2016 Cs-134 1.68E+OO 1.41E+OO 4.87E+OO u WD LTW 390825025 2/3/2016 Cs-137 -1.07E+OO l.20E+OO 3.60E+OO u WD LTW 390825025 2/3/2016 Fe-59 -1.62E+OO 2.77E+OO 8.71E+OO u WD LTW 390825025 2/3/2016 I-131 2.75E-01 2.40E+OO 7.96E+OO u WD LTW 390825025 2/3/2016 K-40 1.77E+Ol 1.69E+Ol 3.57E+Ol u WD LTW 390825025 2/3/2016 La-140 l.36E+OO 2.51E+OO 8.55E+OO u WD LTW 390825025 2/3/2016 Mn-54 -6.90E-01 l.18E+OO 3.0IE+OO u WD LTW 390825025 2/3/2016 Nb-95 -2.40E+OO l.56E+OO 4.06E+OO u WD LTW 390825025 2/3/2016 Ru-103 -l.53E+OO 1.57E+OO 4.60E+OO u WD LTW 390825025 2/3/2016 Ru-106 -9.26E-01 1.13E+Ol 3.77E+Ol u WD LTW 390825025 2/3/2016 Sb-124 1.05E+OO 2.31E+OO 8.22E+OO u WD LTW 390825025 2/3/2016 Sb-125 -4.24E+OO 3.67E+OO 1.06E+Ol u WD LTW 390825025 2/3/2016 Se-75 1.34E+OO l.98E+OO 6.0IE+OO u WD LTW 390825025 2/3/2016 Th-228 1.94E+OO 2.84E+OO 9.34E+OO u WD LTW 390825025 2/3/2016 Zn-65 1.38E+OO 2.61E+OO 9.05E+OO u WD LTW 390825025 2/3/2016 Zr-95 -2.56E+OO 2.48E+OO 7.26E+OO u WD LTW 390825026 2/3/2016 I-131 7.93E-02 2.35E-01 7.51E-Ol u WD STJ 391696023 2/17/2016 Ac-228 -6.15E+OO 7.14E+OO l.94E+Ol u WD STJ 391696023 2/17/2016 Ag-108m 6.20E-01 l.34E+OO 4.39E+OO u WD STJ 391696023 2/17/2016 Ag-llOm 9.47E-01 1.46E+OO 5.0IE+OO u WD STJ 391696023 2/17/2016 Ba-140 3.88E+OO 5.72E+OO 1.98E+Ol u WD STJ 391696023 2/17/2016 Be-7 -6.73E+OO 1.19E+Ol 3.84E+Ol u WD STJ 391696023 2/17/2016 BETA 2.35E-01 1.06E+OO 3.41E+OO u WD STJ 391696023 2/17/2016 Ce-141 -1.45E+OO 2.89E+OO 8.I4E+OO u WD STJ 391696023 2/17/2016 Ce-144 7.35E+OO 9.69E+OO 3.29E+Ol u WD STJ 391696023 2/17/2016 Co-57 4.41E-01 l.33E+OO 4.52E+OO u WD STJ 391696023 2/17/2016 Co-58 2.50E+OO 1.44E+OO 4.93E+OO u WD STJ 391696023 2/17/2016 Co-60 -2.55E+OO 1.66E+OO 4.27E+OO u WD STJ 391696023 2/17/2016 Cr-51 1.0lE-01 1.39E+Ol 3.95E+Ol u WD STJ 391696023 2/17/2016 Cs-134 -l.60E+OO 1.47E+OO 4.19E+OO u WD STJ 391696023 2/17/2016 Cs-137 -1.05E+OO 1.3 lE+OO 3.99E+OO u WD STJ 391696023 2/17/2016 Fe-59 1.62E+OO 2.78E+OO 9.43E+OO u WD STJ 391696023 2/17/2016 I-131 -5.27E-01 2.21E+OO 7.02E+OO u WD STJ 391696023 2/17/2016 K-40 -1.0lE+Ol 1.51E+Ol 4.52E+Ol u WD STJ 391696023 2/17/2016 La-140 1.22E+OO 1.68E+OO 6.0lE+OO u WD STJ 391696023 2/17/2016 Mn-54 -2.29E+OO l.60E+OO 3.95E+OO u WD STJ 391696023 2/17/2016 Nb-95 1.46E+OO 1.35E+OO 4.66E+OO u WD STJ 391696023 2/17/2016 Ru-103 -1.05E+OO 1.48E+OO 4.71E+OO u WD STJ 391696023 2/17/2016 Ru-106 1.00E+Ol 1.27E+Ol 4.35E+Ol u WD STJ 391696023 2/17/2016 Sb-124 4.55E+OO 2.76E+OO 1.05E+Ol u WD STJ 391696023 2/17/2016 Sb-125 -3.60E+OO 3.80E+OO l.llE+Ol u WD STJ 391696023 2/17/2016 Se-75 2.33E-OI 2.05E+OO 6.76E+OO u WD STJ 391696023 2/17/2016 Th-228 -5.0IE+OO 3.18E+OO 8.88E+OO u D-75 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 391696023 2/17/2016 Zn-65 -9.49E-Ol 2.35E+OO 7.50E+OO u WD STJ 391696023 2/17/2016 Zr-95 -l.95E+OO 2.29E+OO 6.83E+OO U WD STJ 391696024 2/17/2016 I-131 -l.27E-Ol 2.38E-01 8.13E-Ol U WD LTW 391696025 2/17/2016 Ac-228 -l.15E+OO 5.77E+OO l.88E+Ol U WD LTW 391696025 2/17/2016 Ag-108m -9.42E-Ol 1.39E+OO 4.18E+OO U WD LTW 391696025 2/17/2016 Ag-llOm -8.13E-Ol 1.96E+OO 6.27E+OO U WD LTW 391696025 2/17/2016 Ba-140 8.89E+OO 7.58E+OO 2.62E+Ol U WD LTW 391696025 2/17/2016 Be-7 -1.91E-Ol 1.26E+Ol 4.24E+Ol U WD LTW 391696025 2/17/2016 BETA l.67E+OO l.18E+OO 3.46E+OO U WD LTW 391696025 2/17/2016 Ce-141 3.77E+OO 2.95E+OO 8.70E+OO U WD LTW 391696025 2/17/2016 Ce-144 -l.15E+Ol 9.90E+OO 2.91E+Ol U WD LTW 391696025 2/17/2016 Co-57 -8.66E-01 l.27E+OO 3.95E+OO U WD LTW 391696025 2/17/2016 Co-58 -9.16E-02 l.69E+OO 4.87E+OO U WD LTW 391696025 2/17/2016 Co-60 -l.20E+OO l.79E+OO 5.50E+OO U WD LTW 391696025 2/17/2016 Cr-51 6.03E+OO 1.46E+Ol 4.86E+Ol U WD LTW 391696025 2/17/2016 Cs-134 1.44E+OO 1.85E+OO 6.23E+OO U WD LTW 391696025 2117/2016 Cs-137 -2.06E+OO 1.62E+OO 4.45E+OO U WD LTW 391696025 2/17/2016 Fe-59 3.57E+OO 3.18E+OO l.12E+Ol U WD LTW 391696025 2/17/2016 I-131 l.52E+OO 2.38E+OO 7.96E+OO U WD LTW 391696025 2/17/2016 K-40 l.69E+Ol 2.37E+Ol 7.63E+Ol U WD LTW 391696025 2/1712016 La-140 2.47E+OO 2.25E+OO 8.24E+OO U WD LTW 391696025 2/1712016 Mn-54 2.20E+OO l.53E+OO 5.0lE+OO U WD LTW 391696025 2/17/2016 Nb-95 3.79E-01 l.25E+OO 4.17E+OO U WD LTW 391696025 2/17/2016 Ru-103 -5.73E-01 l.67E+OO 5.46E+OO U WD LTW 391696025 2/17/2016 Ru-106 -1.47E+Ol l.18E+Ol 3.23E+Ol U WD LTW 391696025 2/17/2016 Sb-124 4.56E+OO 4.99E+OO l.75E+Ol U WD LTW 391696025 2/17/2016 Sb-125 -3.08E+OO 4.llE+OO 1.22E+Ol U WD LTW 391696025 2/17/2016 Se-75 L70E-01 2.09E+OO 6.97E+OO U WD LTW 391696025 2/17/2016 Th-228 -2.19E+OO 3.29E+OO l.02E+Ol U WD LTW 391696025 2/1712016 Zn-65 2.46E+OO 3.84E+OO l.23E+Ol U WD LTW 391696025 2/17/2016 Zr-95 9.46E-Ol 2.60E+OO 8.66E+OO U WD LTW 391696026 2/17/2016 1-131 4.20E-02 2.51E-01 8.18E-01 u WD STJ 396411001 3/30/2016 H-3 5.91E+02 4.41E+02 1.35E+03 U WD LTW 396411002 3/30/2016 H-3 l.84E+02 4.16E+02 1.34E+03 U WD STJ 392609023 3/2/2016 Ac-228 3.55E+OO 4.18E+OO l.35E+Ol U WD STJ 392609023 3/2/2016 Ag-108m 7.89E-01 7.98E-01 2.64E+OO U WD STJ 392609023 3/2/2016 Ag-llOm -l.94E+OO 1.22E+OO 3.23E+OO U WD STJ 392609023 3/2/2016 Ba-140 -8.17E+OO 8.65E+OO l.45E+Ol U WD STJ 392609023 3/2/2016 Be-7 -4.49E+OO 7.59E+OO 2.45E+Ol U WD STJ 392609023 3/2/2016 BETA 2.59E+OO 1.25E+OO 3.42E+OO U WD STJ 392609023 3/2/2016 Ce-141 l.50E+OO l.83E+OO 4.92E+OO U WD STJ 392609023 3/2/2016 Ce-144 l.24E+Ol 7.69E+OO 2.18E+Ol U WD STJ 392609023 3/2/2016 Co-57 2.88E-01 8.57E-01 2.66E+OO U WD STJ 392609023 3/2/2016 Co-58 -l.58E+OO 9.89E-Ol 2.69E+OO U WD STJ 392609023 3/2/2016 Co-60 -3.56E-01 l.lOE+OO 3.12E+OO U WD STJ 392609023 3/2/2016 Cr-51 l.12E+Ol 9.15E+OO 2.93E+Ol U WD STJ 392609023 3/2/2016 Cs-134 -3.77E-01 1.27E+OO 3.40E+OO U WD STJ 392609023 3/2/2016 Cs-137 3.64E+OO 2.28E+OO 3.04E+OO UI WD STJ 392609023 3/2/2016 Fe-59 l.97E+OO l.75E+OO 5.96E+OO U WD STJ 392609023 3/2/2016 I-131 l.45E+OO 1.52E+OO 5.14E+OO U D-76 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SA:M:PLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 392609023 3/2/2016 K-40 5.85E+OO l.24E+Ol 4.32E+Ol u WD STJ 392609023 3/2/2016 La-140 7.67E-01 l.46E+OO 4.88E+OO u WD STJ 392609023 3/2/2016 Mn-54 l.74E+OO 9.58E-01 3.09E+OO u WD STJ 392609023 3/2/2016 Nb-95 9.82E-01 9.22E-01 3.06E+OO u WD STJ 392609023 3/2/2016 Ru-103 -8.23E-01 9.93E-01 3.14E+OO u WD STJ 392609023 3/2/2016 Ru-106 4.13E+OO 8.27E+OO 2.76E+Ol u WD STJ 392609023 3/2/2016 Sb-124 -2.33E+OO 2.34E+OO 6.74E+OO u WD STJ 392609023 3/2/2016 Sb-125 4.39E+OO 3.0lE+OO 8.27E+OO u WD STJ 392609023 3/2/2016 Se-75 -3.19E-01 l.33E+OO 4.26E+OO u WD STJ 392609023 3/2/2016 Th-228 5.68E+OO 2.99E+OO 5.28E+OO U1 WD STJ 392609023 3/2/2016 Zn-65 -2.llE+OO 2.22E+OO 5.66E+OO u WD STJ 392609023 3/2/2016 Zr-95 3.20E+OO l.79E+OO 5.78E+OO u WD STJ 392609024 3/2/2016 I-131 -7.70E-02 2.38E-01 8.03E-Ol u WD LTW 392609025 3/2/2016 Ac-228 2.43E+OO 5.33E+OO l.33E+Ol u WD LTW 392609025 3/2/2016 Ag-108m 4.66E-01 8.07E-01 2.63E+OO u \VD LTW 392609025 3/2/2016 Ag-llOm -3.73E-01 l.19E+OO 3.78E+OO u WD LTW 392609025 3/2/2016 Ba-140 5.04E+OO 4.35E+OO 1.47E+Ol u WD LTW 392609025 3/2/2016 Be-7 -6.46E+OO 7.71E+OO 2.33E+Ol u WD LTW 392609025 3/2/2016 BETA 2.83E+OO l.22E+OO .3.28E+OO u WD LTW 392609025 3/2/2016 Ce-141 1.97E+OO 2.lOE+OO 4.76E+OO u WD LTW 392609025 3/2/2016 Ce-144 -3.34E-01 6.07E+OO l.93E+Ol u WD LTW 392609025 3/2/2016 Co-57 -5.15E-01 7.72E-01 2.40E+OO u WD LTW 392609025 3/2/2016 Co-58 8.43E-02 9.06E-01 2.97E+OO u WD LTW 392609025 3/2/2016 Co-60 -2.07E+OO l.13E+OO 2.53E+OO u WD LTW 392609025 3/2/2016 Cr-51 -9.70E+OO 8.47E+OO 2.58E+Ol u WD LTW 392609025 3/2/2016 Cs-134 -7.13E-01 8.65E-01 2.64E+OO u WD LTW 392609025 3/2/2016 Cs-137 l.40E-01 8.49E-Ol 2.83E+OO u WD LTW 392609025 3/2/2016 Fe-59 1.29E+OO 1.67E+OO 5.72E+OO u WD LTW 392609025 3/2/2016 I-131 l.03E+OO 1.55E+OO 4.75E+OO u WD LTW 392609025 3/2/2016 K-40 9.75E+OO l.29E+Ol 2.31E+Ol u WD LTW 392609025 3/2/2016 La-140 2.31E+OO 1.68E+OO 5.62E+OO u WD LTW 392609025 3/2/2016 Mn-54 -l.27E-01 8.58E-01 2.77E+OO u WD LTW 392609025 3/2/2016 Nb-95 8.42E-01 9.SOE-01 3.26E+OO u WD LTW 392609025 3/2/2016 Ru-103 -1.16E+OO 9.07E-OI 2.77E+OO u WD LTW 392609025 3/2/2016 Ru-106 -8.44E+OO 7.74E+OO 2.36E+Ol u WD LTW 392609025 3/2/2016 Sb-124 8.72E-01 2.23E+OO 7.63E+OO u WD LTW 392609025 3/2/2016 Sb-125 -2.71E-02 2.30E+OO 7.39E+OO u WD LTW 392609025 3/2/2016 Se-75 -l.47E+OO l.18E+OO 3.60E+OO u WD LTW 392609025 3/2/2016 Th-228 7.07E+OO 3.47E+OO 6.45E+OO UI WD LTW 392609025 3/2/2016 Zn-65 l.39E+OO 2.15E+OO 6.39E+OO u WD LTW 392609025 3/2/2016 Zr-95 4.53E+OO 2.33E+OO 5.42E+OO u WD LTW 392609026 3/2/2016 I-131 9.72E-02 2.63E-01 8.51E-01 u WD STJ 393504023 3/16/2016 Ac-228 1.15E+OO 6.59E+OO 2.23E+Ol u WD STJ 393504023 3/16/2016 Ag-108m l.31E+OO l.37E+OO 4.71E+OO u WD STJ 393504023 3/16/2016 Ag-llOm 6.66E-01 2.33E+OO 7.95E+OO u WD STJ 393504023 3/16/2016 Ba-140 -3.77E+OO 7.43E+OO 2.33E+Ol u WD STJ 393504023 3/16/2016 Be-7 l.55E+Ol l.38E+Ol 4.73E+Ol u WD STJ 393504023 3/16/2016 BETA l.65E+OO l.16E+OO 3.45E+OO u WD STJ 393504023 3/16/2016 Ce-141 -3.39E+OO 3.40E+OO 9.18E+OO u WD STJ 393504023 3/16/2016 Ce-144 l.26E+OI l.05E+Ol 3.35E+Ol u D-77 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 393504023 3/16/2016 Co-57 1.0lE+OO 1.25E+OO 4.18E+OO u WD STJ 393504023 3/16/2016 Co-58 -8.79E-01 l.71E+OO 5.44E+OO u WD STJ 393504023 3/16/2016 Co-60 3.21E+OO l.75E+OO 5.90E+OO u WD STJ 393504023 3/16/2016 Cr-51 9.47E+OO l.34E+Ol 4.60E+Ol u WD STJ 393504023 3/16/2016 Cs-134 -5.09E-01 1.81E+OO 5.94E+OO u WD STJ 393504023 3/16/2016 Cs-137 1.49E+OO 1.85E+OO 6.25E+OO u WD STJ 393504023 3/16/2016 Fe-59 7.97E-Ol 3.0lE+OO 1.02E+Ol u WD STJ 393504023 3/16/2016 I-131 4.07E-01 2.55E+OO 8.60E+OO u WD STJ 393504023 3/16/2016 K-40 -2.30E+Ol 2.23E+Ol 7.39E+Ol u WD STJ 393504023 3/16/2016 La-140 -7.05E+OO 3.14E+OO 5.17E+OO u WD STJ 393504023 3/16/2016 Mn-54 4.97E-01 l.84E+OO 5.49E+OO u WD STJ 393504023 3/16/2016 Nb-95 l.74E+OO l.62E+OO 5.74E+OO u WD STJ 393504023 3/16/2016 Ru-103 2.0lE+OO l.69E+OO 5.77E+OO u WD STJ 393504023 3/16/2016 Ru-106 -8.97E+OO l.51E+Ol 4.64E+Ol u WD STJ 393504023 3/16/2016 Sb-124 1.35E+OO 4.24E+OO 1.46E+Ol u WD STJ 393504023 3/16/2016 Sb-125 8.58E-01 4.52E+OO l.52E+Ol u WD STJ 393504023 3/16/2016 Se-75 2.24E+OO 2.12E+OO 6.96E+OO u WD STJ 393504023 3/16/2016 Th-228 3.98E+OO 3.66E+OO 8.39E+OO u WD STJ 393504023 3/16/2016 Zn-65 5.58E+OO 4.19E+OO 1.34E+Ol u WD STJ 393504023 3/16/2016 Zr-95 4.17E+OO 3.50E+OO l.18E+Ol u WD STJ 393504024 3/16/2016 I-131 -4.94E-Ol 2.26E-Ol 8.37E-01 u WD LTW 393504025 3/16/2016 Ac-228 -2.43E+OO 6.71E+OO l.94E+Ol u WD LTW 393504025 3/16/2016 Ag-108m -l.16E+OO l.15E+OO 3.34E+OO u WD LTW 393504025 3/16/2016 Ag-llOm -1.56E-Ol l.96E+OO 6.36E+OO u WD LTW 393504025 3/16/2016 Ba-140 3.78E+OO 6.04E+OO 2.03E+Ol u WD LTW 393504025 3/16/2016 Be-7 -2.98E+OO l.38E+Ol 4.42E+Ol u WD LTW 393504025 3/16/2016 BETA -7.20E-01 l.OlE+OO 3.45E+OO u WD LTW 393504025 3/16/2016 Ce-141 -2.18E+OO 2.40E+OO 7.30E+OO u WD LTW 393504025 3/16/2016 Ce-144 1.84E+Ol l.22E+Ol 3.llE+Ol u WD LTW 393504025 3/16/2016 Co-57 8.SOE-01 l.16E+OO 3.88E+OO u WD LTW 393504025 3/16/2016 Co-58 -1.79E+OO 1.54E+OO 3.72E+OO u WD LTW 393504025 3/16/2016 Co-60 2.85E+OO l.78E+OO 6.37E+OO u WD LTW 393504025 3/16/2016 Cr-51 l.93E+Ol l.23E+Ol 4.39E+Ol u WD LTW 393504025 3/16/2016 Cs-134 3.86E+OO l.69E+OO 4.97E+OO u WD LTW 393504025 3/16/2016 Cs-137 -2.93E-Ol l.60E+OO 5.29E+OO u WD LTW 393504025 3/16/2016 Fe-59 2.69E-02 3.79E+OO 1.IOE+Ol u WD LTW 393504025 3/16/2016 I-131 3.12E+OO 2.67E+OO 9.05E+OO u WD LTW 393504025 3/16/2016 K-40 5.58E+OO 1.78E+Ol 6.37E+Ol u WD LTW 393504025 3/16/2016 La-140 -2.74E+OO 2.47E+OO 6.43E+OO u WD LTW 393504025 3/16/2016 Mn-54 1.69E+OO l.33E+OO 4.68E+OO u WD LTW 393504025 3/16/2016 Nb-95 l.15E+OO l.47E+OO 5.lOE+OO u WD LTW 393504025 3/16/2016 Ru-103 -2.65E+OO l.73E+OO 4.60E+OO u WD LTW 393504025 3/16/2016 Ru-106 -l.72E+Ol l.23E+Ol 3.44E+Ol u WD LTW 393504025 3/16/2016 Sb-124 -2.12E+OO 4.46E+OO 1.34E+Ol u WD LTW 393504025 3/16/2016 Sb-125 6.86E+OO 4.05E+OO 1.36E+Ol u WD LTW 393504025 3/16/2016 Se-75 l.45E+OO 1.81E+OO 6.23E+OO u WD LTW 393504025 3/16/2016 Th-228 6.65E+OO 3.84E+OO 7.82E+OO u WD LTW 393504025 3/16/2016 Zn-65 5.02E+OO 3.51E+OO l.15E+Ol u WD LTW . 393504025 3/16/2016 Zr-95 **;*,. 6.47E+OO 2.65E+OO 9.07E+OO u WD LTW 393504026 3/16/2016 I-131 -4.19E-01 l.99E-Ol 7.81E-Ol u D-78 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

WD STJ 394190023 3/30/2016 Ac-228 4.IOE+OO 5.83E+OO 1.97E+Ol u WD STJ 394190023 3/30/2016 Ag-108m 2.69E+OO l.33E+OO 4.24E+OO u WD STJ 394190023 3/30/2016 Ag-llOm -8.90E-01 l.37E+OO 4.16E+OO u WD STJ 394190023 3/30/2016 Ba-140 7.38E-01 5.71E+OO 1.89E+Ol u WD STJ 394190023 3/30/2016 Be-7 -1.03E+Ol 1.0IE+Ol 2.99E+Ol u WD STJ 394190023 3/30/2016 BETA l.55E+OO 9.17E-01 2.53E+OO u WD STJ 394190023 3/30/2016 Ce-141 1.24E+OO 2.69E+OO 6.92E+OO u WD STJ 394190023 3/30/2016 Ce-144 9.22E+OO 7.54E+OO 2.56E+Ol u WD STJ 394190023 3/30/2016 Co-57 1.06E-01 1.02E+OO 3.44E+OO u WD STJ 394190023 3/30/2016 Co-58 -2.19E-01 1.18E+OO 3.89E+OO u WD STJ 394190023 3/30/2016 Co-60 -3.05E+OO l.63E+OO 3.94E+OO u WD STJ 394190023 3/30/2016 Cr-51 l.70E+Ol 1.16E+Ol 3.99E+Ol u WD STJ 394190023 3/30/2016 Cs-134 -1.57E-01 l.12E+OO 3.71E+OO u WD STJ 394190023 3/30/2016 Cs-137 -3.37E-01 l.30E+OO 4.07E+OO u WD STJ 394190023 3/30/2016 Fe-59 4.57E-01 2.48E+OO 8.22E+OO u WD STJ 394190023 3/30/2016 I-131 3.85E+OO 2.14E+OO 7.24E+OO u WD STJ 394190023 3/30/2016 K-40 -6.60E+OO L53E+o1 5.33E+Ol u WD STJ 394190023 3/30/2016 La-140 -5.03E-Ol 1.65E+OO 5.17E+OO u WD STJ 394190023 3/30/2016 Mn-54 3.15E+OO 1.77E+OO 3.57E+OO u WD STJ 394190023 3/30/2016 Nb-95 2.72E+OO l.44E+OO 4.83E+OO u WD STJ 394190023 3/30/2016 Ru-103 -1.44E+OO l.35E+OO 3.99E+OO u WD STJ 394190023 3/30/2016 Ru-106 -1.81E+Ol l.30E+Ol 3.50E+Ol u WD STJ 394190023 3/30/2016 Sb-124 3.46E+OO 4.lOE+OO 1.43E+Ol u WD STJ 394190023 3/30/2016 Sb-125 2.94E+OO 3.60E+OO 1.24E+Ol u WD STJ 394190023 3/30/2016 Se-75 -9.98E-01 1.70E+OO 5.23E+OO u WD STJ 394190023 3/30/2016 Th-228 2.76E+OO 3.76E+OO 9.75E+OO u WD STJ 394190023 3/30/2016 Zn-65 2.15E+OO 3.27E+OO 9.89E+OO u WD STJ 394190023 3/30/2016 Zr-95 -3.94E-Ol 2.03E+OO 6.71E+OO u WD STJ 394190024 3/30/2016 I-131 -3.24E-Ol 2.32E-01 8.30E-Ol u WD LTW 394190025 3/30/2016 Ac-228 3.54E+OO 5.77E+OO 1.88E+Ol u WD LTW 394190025 3/30/2016 Ag-108m -5.13E-02 1.08E+OO 3.59E+OO u WD LTW 394190025 3/30/2016 Ag-llOm 2.15E+OO 1.68E+OO 5.72E+OO u WD LTW 394190025 3/30/2016 Ba-140 -4.17E+OO 5.64E+OO 1.75E+Ol u WD LTW 394190025 3/30/2016 Be-7 3.20E+Ol l.36E+Ol 4.0lE+OI u WD LTW 394190025 3/30/2016 BETA 2.81E+OO 1.09E+OO 3.22E+OO u WD LTW 394190025 3/30/2016 Ce-141 2.48E+OO 2.74E+OO 7.90E+OO u WD LTW 394190025 3/30/2016 Ce-144 -5.40E+OO 8.61E+OO 2.77E+Ol u WD LTW 394190025 3/30/2016 Co-57 5.13E-Ol l.12E+OO 3.75E+OO u WD LTW 394190025 3/30/2016 Co-58 -1.99E-02 1.25E+OO 4.05E+OO u WD LTW 394190025 3/30/2016 Co-60 2.48E-Ol 1.25E+OO 4.19E+OO u WD LTW 394190025 3/30/2016 Cr-51 -l.88E+Ol 1.24E+Ol 3.38E+Ol u WD LTW 394190025 3/30/2016 Cs-134 2.71E+OO 1.37E+OO 4.61E+OO u WD LTW 394190025 3/30/2016 Cs-137 6.41E-02 1.35E+OO 4.36E+OO u WD LTW 394190025 3/30/2016 Fe-59 5.44E+OO 2.65E+OO 8.55E+OO u WD LTW 394190025 3/30/2016 I-131 7.94E-Ol 1.92E+OO 6.59E+OO u WD LTW 394190025 3/30/2016 K-40 1.25E+Ol 1.62E+Ol 3.13E+Ol u WD LTW 394190025 3/30/2016 La-140 4.59E-Ol l.97E+OO 6.56E+OO u WD LTW 394190025 3/30/2016 Mn-54 1.16E+OO l.28E+OO 4.32E+OO u WD LTW 394190025 3/30/2016 Nb-95 6.45E-Ol l.IIE+OO 3.74E+OO u WD LTW 394190025 3/30/2016 Ru-103 -1.64E+OO 1.59E+OO 4.07E+OO u D-79 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 394190025 3/30/2016 Ru-106 -2.73E+OO l.17E+Ol 3.77E+Ol u WD LTW 394190025 3/30/2016 Sb-124 -3.80E+OO 2.68E+OO 6.21E+OO u WD LTW 394190025 3/30/2016 Sb-125 l.llE+OO 4.23E+OO l.25E+Ol u WD LTW 394190025 3/30/2016 Se-75 l.71E+OO l.82E+OO 5.99E+OO u WD LTW 394190025 3/30/2016 Th-228 l.IOE-02 2.74E+OO 8.88E+OO u WD LTW 394190025 3/30/2016 Zn-65 2.68E+OO 2.49E+OO 8.72E+OO u WD LTW 394190025 3/30/2016 Zr-95 2.47E+OO l.97E+OO 6.79E+OO u WD LTW 394190026 3/30/2016 I-131 -2.6IE-01 2.44E-01 &.49E-01 u WD STJ 395460023 4/13/2016 Ac-228 1.38E+Ol 6.26E+OO 1.84E+Ol u WD STJ 395460023 4/13/2016 Ag-108m -1.65E-02 1.1 IE+OO 3.6IE+OO u WD STJ 395460023 4/13/2016 Ag-llOm -5.13E-01 l.76E+OO 5.58E+OO u WD STJ 395460023 4/13/2016 Ba-140 -1.37E+Ol 7.40E+OO 1.79E+Ol u WD STJ 395460023 4/13/2016 Be-7 9.94E+OO l.25E+Ol 3.90E+Ol u WD STJ 395460023 4/13/2016 BETA -l.&3E+OO l.06E+OO 3.69E+OO u WD STJ 395460023 4/13/2016 Ce-141 -7.65E-01 2.73E+OO 7.66E+OO u WD STJ 395460023 4/13/2016 Ce-144 -2.88E+OO 9.lOE+OO 2.92E+Ol u WD STJ 395460023 4/13/2016 Co-57 3.27E-02 l.16E+OO 3.8IE+OO u WD STJ 395460023 4/13/2016 Co-58 -l.67E+OO l.30E+OO 3.55E+OO u WD STJ 395460023 4/13/2016 Co-60 * -1.76E+OO l.46E+OO 3.98E+OO u WD STJ 395460023 4/13/2016 Cr-51 -2.54E+Ol l.34E+Ol 3.52E+Ol u WD STJ 395460023 4/13/2016 Cs-134 -8.78E-03 l.16E+OO 3.79E+OO u WD STJ 395460023 4/13/2016 Cs-137 -2.16E-01 1.09E+OO 3.55E+OO u WD STJ 395460023 4/13/2016 Fe-59 2.23E-01 2.19E+OO 7.40E+OO u WD STJ 3954600:23 4/13/2016 I-131 2.97E+OO 2.28E+OO 7.68E+OO u WD STJ 395460023 4/13/2016 K-40 6.36E+Ol l.85E+Ol 3.05E+Ol ur WD STJ 395460023 4/13/2016 La-140 l.09E+OO l.94E+OO 6.58E+OO u WD STJ 395460023 4/13/2016 Mn-54 -9.33E-01 l.24E+OO 3.73E+OO u WD STJ 395460023 4/13/2016 Nb-95 7.98E-01 l.37E+OO 4.66E+OO u WD STJ 395460023 4/13/2016 Ru-103 -1.36E+OO l.67E+OO 4.24E+OO u WD STJ 395460023 4/13/2016 Ru-106 -2.53E+OO l.14E+Ol 3.76E+Ol u WD STJ 395460023 4/13/2016 Sb-124 -1.14E+OO 2.80E+OO 8.84E+OO u WD STJ 395460023 4/13/2016 Sb-125 2.25E+OO 3.69E+OO l.23E+Ol u WD STJ 395460023 4/13/2016 Se-75 -l.42E+OO l.89E+OO 6.04E+OO u WD STJ 395460023 4/13/2016 Th-228 8.75E-01 3.00E+OO I.OIE+Ol u WD STJ 395460023 4/13/2016 Zn-65 -l.83E+OO 2.83E+OO 8.80E+OO u WD STJ 395460023 4/13/2016 Zr"95 3.12E+OO 2.37E+OO 8.22E+OO U WD STJ 395460024 4/13/2016 I-131 3.76E-Ol 2.82E-01 8.25E-01 u WD LTW 395460025 4/13/2016 Ac-228 7.18E+OO 8.25E+OO 2.46E+Ol U WD LTW 395460025 4/13/2016 Ag-108m 3.59E-01 l.39E+OO 4.67E+OO U WD LTW 395460025 4/13/2016 Ag-llOm -2.75E-02 2.20E+OO 7.33E+OO U WD LTW 395460025 4/13/2016 Ba-140 3.19E+OO 8.16E+OO 2.36E+Ol U WD LTW 395460025 4/13/2016 Be-7 l.lOE+Ol l.28E+Ol 4.40E+Ol U WD LTW 395460025 4/13/2016 BETA 1.46E+OO 9.48E-01 2.69E+OO U WD LTW 395460025 4/13/2016 Ce-141 9.46E-01 4.75E+OO 7.7IE+OO U WD LTW 395460025 4/13/2016 Ce-144 -l.63E+Ol l.OIE+Ol 2.88E+Ol U WD LTW 395460025 4/13/2016 Co-57 -9.48E-01 l.32E+OO 3.62E+OO U WD LTW 395460025 4/13/2016 Co-58 2.50E+OO l.77E+OO 6.25E+OO U WD LTW 395460025 4/13/2016 Co-60 -4.46E-01 1.65E+OO 5.15E+OO u WD LTW 395460025 4/13/2016 Cr-51 2.23E+Ol l.55E+Ol 5.25E+Ol u WD LTW 395460025 4/13/2016 Cs-134 9.3IE+OO 2.77E+OO 6.34E+OO ur D-80 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 395460025 4/13/2016 Cs-137 -6.28E-01 l.96E+OO 6.18E+OO u WD LTW 395460025 4/1312016 Fe-59 -3.39E-02 3.63E+OO 1.19E+Ol u WD LTW 395460025 4/13/2016 I-131 -6.SOE-Ol 2.85E+OO 9.41E+OO u WD LTW 395460025 4/13/2016 K-40 2.44E+Ol 2.51E+Ol 8.74E+Ol u WD LTW 395460025 4/13/2016 La-140 -3.62E+OO 3.07E+OO 8.34E+OO u WD LTW 395460025 4/13/2016 Mn-54 -l.88E+OO l.62E+OO 4.67E+OO u WD LTW 395460025 4113/2016 Nb-95 -l.43E+OO l.76E+OO 5.02E+OO u WD LTW 395460025 4/13/2016 Ru-103 1.lOE+OO 1.93E+OO 6.52E+OO u WD LTW 395460025 4/13/2016 Ru-106 -l.66E+Ol 1.52E+Ol 4.36E+Ol u WD LTW 395460025 4/13/2016 Sb-124 l.39E+OO 4.51E+OO 1.55E+Ol u WD LTW 395460025 4/13/2016 Sb-125 -5.20E+OO 4.26E+OO l.24E+Ol u WD LTW 395460025 4/13/2016 Se-75 1.26E+OO 1.87E+OO 6.17E+OO u WD LTW 395460025 4113/2016 Th-228 4.50E+OO 3.73E+OO 9.99E+OO u WD LTW 395460025 4/13/2016 Zn-65 -3.22E+OO 4.65E+OO 1.42E+Ol u WD LTW 395460025 4/13/2016 Zr-95 2.28E+OO 3.03E+OO 9.18E+OO u WD LTW 395460026 4/13/2016 I-131 1.47E-01 2.48E-Ol 7.79E-01 u WD STJ 396336023 4/27/2016 Ac-228 -5.84E+OO 3.02E+OO 5.85E+OO u WD STJ 396336023 4/27/2016 Ag-108m 1.54E-01 4.42E-01 1.25E+OO u WD STJ 396336023 4/2712016 Ag-llOm -l.13E+OO 6.35E-Ol 1.76E+OO u WD STJ 396336023 4/27/2016 Ba-140 2.22E+OO 2.30E+OO 6.72E+OO u WD STJ 396336023 4/27/2016 Be-7 -5.92E+OO 3.99E+OO 1.16E+Ol u WD STJ 396336023 4/27/2016 BETA 4.15E-01 1.05E+OO 3.34E+OO u WD STJ 396336023 4/27/2016 Ce-141 5.68E-01 7.99E-01 2.53E+OO u WD STJ 396336023 4/27/2016 Ce-144 -4.50E-02 2.92E+OO 9.32E+OO u WD STJ 396336023 4/27/2016 Co-57 1.42E-01 3.77E-01 1.21E+OO u WD STJ 396336023 4/27/2016 Co-58 -2.94E-01 4.40E-Ol l.39E+OO u WD STJ 396336023 4/27/2016 Co-60 6.06E-01 4.45E-01 l.45E+OO u WD STJ 396336023 4/27/2016 Cr-51 -3.12E+OO 4.16E+OO 1.28E+Ol u WD STJ 396336023 4/27/2016 Cs-134 -l.25E+OO 7.46E-01 1.41E+OO u WD STJ 396336023 4/27/2016 Cs-137 1.45E-01 4.31E-01 1.43E+OO u WD STJ 396336023 4/27/2016 Fe-59 -1.40E+OO 8.73E-01 2.54E+OO u WD STJ 396336023 4/2712016 I-131 7.35E-01 7.56E-01 2.44E+OO u WD STJ 396336023 4/27/2016 K-40 -9.46E+OO 8.53E+OO 1.98E+Ol u WD STJ 396336023 4/27/2016 La-140 1.49E+OO 8.42E-01 2.35E+OO u WD STJ 396336023 4/2712016 Mn-54 -2.93E-Ol 4.26E-Ol l.35E+OO u WD STJ 396336023 4/27/2016 Nb-95 8.54E-01 4.70E-01 1.46E+OO u WD STJ 396336023 4/27/2016 Ru-103 l.48E-01 4.99E-01 1.47E+OO u WD STJ 396336023 4/27/2016 Ru-106 -2.31E+OO 3.91E+OO l.27E+Ol u WD STJ 396336023 4/27/2016 . Sb-124 -7.26E-01 9.89E-01 3.18E+OO u WD STJ 396336023 4/27/2016 Sb-125 l.30E+OO 1.24E+OO 3.95E+OO u WD STJ 396336023 4/2712016 Se-75 -3.86E-01 5.74E-01 l.86E+OO u WD STJ 396336023 4/27/2016 Th-228 -l.24E-Ol l.34E+OO 2.86E+OO u WD STJ 396336023 4/27/2016 Zn-65 3.45E-01 9.38E-01 2.73E+OO u WD STJ 396336023 4/27/2016 Zr-95 -5.47E-01 7.52E-01 2.31E+OO u WD STJ 396336024 4/27/2016 I-131 6.0SE-02 6.42E-02 2.0SE-01 u WD LTW 396336025 4/27/2016 Ac-228 -2.79E+OO 2.70E+OO 6.0lE+OO u WD LTW 396336025 4/27/2016 Ag-108m -2.06E-01 4.05E-01 1.32E+OO u WD LTW 396336025 4/27/2016 Ag-1 lOm -9.98E-01 5.66E-01 1.62E+OO u WD LTW 396336025 4/2712016 Ba-140 -l.05E+OO 2.09E+OO 6.71E+OO u WD LTW 396336025 4/27/2016 Be-7 1.92E+OO 4.17E+OO l.21E+Ol u D-81 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 396336025 4/27/2016 BETA 2.36E+OO l.16E+OO 3.14E+OO u WD LTW 396336025 4/27/2016 Ce-141 9.00E-01 8.45E-Ol 2.69E+OO u WD LTW 396336025 4/27/2016

Ce-144 -4.50E+OO 3.30E+OO 9.98E+OO u WD LTW 396336025 4/27/2016 Co-57 l.03E-Ol 4.09E-01 l.34E+OO u WD LTW 396336025 4/27/2016 Co-58 -7.34E-02 4.07E-01 l.36E+OO u WD LTW 396336025 4/27/2016 Co-60 -3.26E-OI 7.80E-OI l.64E+OO u WD LTW 396336025 4/27/2016 Cr-51 l.09E+OO 4.15E+OO l.40E+OI u WD LTW 396336025 4/27/2016 Cs-134 -3.48E-02 5.00E-01 1.46E+OO u WD LTW 396336025 4/27/2016 Cs-137 4.40E-OI 4.32E-OI l.39E+OO u WD LTW 396336025 4/27/2016 Fe-59 -6.90E-OI 8.22E-Ol 2.58E+OO u WD LTW 396336025 4/27/2016 I-131 4.48E-Ol 7.37E-OI 2.46E+OO u WD LTW 396336025 4/27/2016 K-40 -3.08E+OO 1.02E+Ol l.99E+OI u WD LTW 396336025 4/27/2016 La-140 -3.82E-Ol 6.39E-Ol 2.08E+OO u WD LTW 396336025 4/27/2016 Mn-54 -5.65E-OI 4.09E-Ol l.25E+OO u WD LTW 396336025 4/27/2016 Nb-95 l.34E-03 7.33E-Ol 1.45E+OO u \VD LTW 396336025 4/27/2016 Ru-103 -l.79E-OI 4.54E-Ol l.47E+OO u WD LTW 396336025 4/27/2016 Ru-106 -3.09E+OO 3.83E+OO 1.19E+Ol u WD LTW 396336025 4/27/2016 Sb-124 -l.67E+OO 1.04E+OO 3.0IE+OO u WD LTW 396336025 4/27/2016 Sb-125 -l.81E+OO l.23E+OO 3.71E+OO u WD LTW 396336025 4/27/2016 Se-75 -5.29E-Ol 5.99E-Ol l.96E+OO u WD LTW 396336025 4/27/2016 Th-228 -l.40E+OO l.54E+OO 3.07E+OO u vm LTW 396336025 4/27/2016 Zn-65 -l.41E+OO 9.55E-01 2.79E+OO u WD LTW 396336025 4/27/2016 Zr-95 -l.60E+OO 8.03E-01 2.26E+OO u WD LTW 396336026 4/27/2016 I-131 -8.56E-02 5.20E-02 l.78E-01 u WD STJ 397370023 5/11/2016 Ac-228 l.96E+OO 4.84E+OO 9.03E+OO u WD STJ 397370023 5/11/2016 Ag-108m -2.47E-01 5.30E-01 l.75E+OO u WD STJ 397370023 5/1112016 Ag-llOm -3.25E-01 7.77E-01 2.54E+OO u WD STJ 397370023 5/11/2016 Ba-140 2.02E+OO 3.89E+OO l.30E+Ol u WD STJ 397370023 5/11/2016 Be-7 5.04E+OO 5.42E+OO l.81E+OI u WD STJ 397370023 5/1112016 BETA l.78E+OO 1.08E+OO 3.05E+OO u WD STJ 397370023 5/1112016 Ce-141 8.29E-01 1.30E+OO 4.23E+OO u WD STJ 397370023 5/11/2016 Ce-144 -9.67E-01 4.lOE+OO l.38E+Ol u WD STJ 397370023 5/1112016 Co-57 4.00E-01 5.38E-01 l.82E+OO u WD STJ 397370023 5/11/2016 Co-58 l.33E-01 6.14E-01 2.07E+OO u WD STJ 397370023 5/11/2016 Co-60 -5.59E-02 6.54E-01 2.lOE+OO u WD STJ 397370023 5/11/2016 Cr-51 -9.14E-01 7.00E+OO 2.26E+Ol u WD STJ 397370023 5/11/2016 Cs-134 8.16E-01 6.55E-01 2.19E+OO u WD STJ 397370023 5/11/2016 Cs-137 8.87E-OI 6.57E-01 2.12E+OO u WD STJ 397370023 5/11/2016 Fe-59 3.59E-Ol l.42E+OO 4.68E+OO u WD STJ 397370023 5/11/2016 I-131 -5.87E-01 l.68E+OO 5.33E+OO u WD STJ 397370023 5/11/2016 K-40 -2.53E+Ol 1:37E+Ol 2.82E+Ol u WD STJ 397370023 5/11/2016 La-140 8.93E-01 1.47E+OO 4.30E+OO u *WD STJ 397370023 5/11/2016 Mn-54 1.14E+OO 6.27E-01 2.02E+OO u WD STJ 397370023 5/11/2016 Nb-95 3.14E-Ol 6.49E-Ol 2.llE+OO u WD STJ 397370023 5/11/2016 Ru-103 -1.24E+OO 7.64E-01 2.25E+OO u WD STJ 397370023 5/11/2016 Ru-106 -7.39E-Ol 5.26E+OO l.72E+Ol u WD STJ 397370023 5/11/2016 Sb-124 -4.66E-Ol l.46E+OO 4.71E+OO u WD STJ 397370023 5/11/2016 Sb-125 -4.42E-Ol 1.66E+OO 5.53E+OO u WD STJ 397370023 5/11/2016 Se-75 -l.27E+OO 9.23E-01 2.77E+OO u WD STJ 397370023 5/11/2016 Th-228 -7.44E-Ol 2.26E+OO 4.84E+OO u D-82 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 397370023 5/1112016 Zn-65 -9.49£-01 l.35E+OO 4.23E+OO u WD STJ 397370023 5/11/2016 Zr-95 6.66E-01 l.28E+OO 3.63E+OO u WD STJ 397370024 5/11/2016 I-131 2.34E-01 2.98E-01 9.69E-01 u WD LTW 397370025 5/11/2016 Ac-228 -3.34E+OO 3.24E+OO 6.69E+OO u WD LTW 397370025 5/11/2016 Ag-108m 2.58E-01 4.16E-01 1.39E+OO u WD LTW 397370025 5/11/2016 Ag-110111

-2.86E-01 6.66E-Ol 2.16E+OO u WD LTW 397370025 5/11/2016 Ba-140 7.42E-01 3.09E+OO 1.02E+Ol u WD LTW 397370025 5/11/2016 Be-7 -l.92E+OO 5.18E+OO 1.47E+Ol u WD LTW 397370025 5/11/2016 BETA l.65E+OO 1.08E+OO 3.lOE+OO u WD LTW 397370025 5/11/2016 Ce-141 -4.65E+OO l.94E+OO 3.05E+OO u WD LTW 397370025 5/11/2016 Ce-144 2.13E-01 3.25E+OO l.09E+Ol u WD LTW 397370025 5/11/2016 Co-57 3.09E-Ol 4.29E-01 1.44E+OO u WD LTW 397370025 5/11/2016 Co-58 -6.85E-01 5.44E-OI l.65E+OO u WD LTW 397370025 5/11/2016 Co-60 5.55E-01 5.62E-Ol l.91E+OO u WD LTW 397370025 5/11/2016 Cr-51 -4.00E+OO 5.37E+OO l.77E+Ol u WD LTW 397370025 5/11/2016 Cs-134. 9.37E-01 5.59E-01 l.83E+OO u WD LTW 397370025 5/1112016 Cs-137 -1.93E-01 4.77E-01 l.50E+OO u WD LTW 397370025 5/1112016 Fe-59 -6.33E-01 1.12E+OO 3.54E+OO u WD LTW 397370025 5/11/2016 I-131 3.47E+OO 1.57E+OO 4.79E+OO u WD LTW 397370025 5/11/2016 K-40 2.19E+Ol 1.llE+Ol l.60E+Ol UI WD LTW 397370025 5/11/2016 La-140 -l.61E+OO 1.12E+OO 3.19E+OO u WD LTW 397370025 5/11/2016 Mn-54 -l.49E+OO 8.22E-01 l.62E+OO u WD LTW 397370025 5/1112016 Nb-95 9.34E-02 5.08E-Ol l.71E+OO u WD LTW 397370025 5/11/2016 Ru-103 1.25E-02 6.21E-Ol l.79E+OO u WD LTW 397370025 5/1112016 Ru-106 -2.61E+OO 4.56E+OO 1.43E+Ol u WD LTW 397370025 5/1112016 Sb-124 -9.80E-01 1.31E+OO 4.02E+OO u WD LTW 397370025 5/11/2016 Sb-125 5.39E-Ol l.30E+OO 4.35E+OO u WD LTW 397370025 5/1112016 Se-75 -7.60E-03 6.98E-Ol 2.24E+OO u \VD LTW 397370025 5/11/2016 Th-228 l.61E+OO 2.08E+OO 3.67E+OO u WD LTW 397370025 5/1112016 Zn-65 5.54E-OI l.12E+OO 3.68E+OO u WD LTW 397370025 5/1112016 Zr-95 1.36E+OO 9.62E-Ol 3.20E+OO u WD LTW 397370026 5/1112016 I-131 -2.llE-01 2.39E-01 8.00E-01 u WD STJ 403180001 6/22/2016 H-3 3.45E+02 4.14E+02 1.31E+03 u WD LTW 403180002 . 6/22/2016 H-3 2.39E+02 3.96E+02 l.26E+03 u WD STJ 398279023 5/25/2016 Ac-228 1.15E+Ol 7.45E+OO 2.53E+Ol u WD STJ 398279023 5/25/2016 Ag-108m 8.46E-01 1.40E+OO 4.64E+OO u WD STJ 398279023 5/25/2016 Ag-llOm -2.02E+OO l.91E+OO 5.37E+OO u WD STJ 398279023 5/25/2016 Ba-140 l.03E+Ol 1.16E+Ol 3.84E+Ol u WD STJ 398279023 5/25/2016 Be-7 -2.79E+Ol 1.70E+Ol 4.41E+Ol u WD STJ 398279023 5/25/2016 BETA -1.08E+OO 8.09E-01 2.90E+OO u WD STJ 398279023 5/25/2016 Ce-141 -2.29E+OO 4.06E+OO 1.14E+Ol u WD STJ 398279023 5/25/2016 Ce-144 2.77E+Ol 1.28E+Ol 4.00E+Ol u WD STJ 398279023 5/25/2016 Co-57 -8.48E-Ol l.67E+OO 4.84E+OO u WD STJ 398279023 5/25/2016 Co-58 -l.02E-01 1.81E+OO 5.95E+OO u WD STJ 398279023 5/25/2016 Co-60 -7.37E-01 1.70E+OO 5.42E+OO u WD STJ 398279023 5/25/2016 Cr-51 7.29E+OO 1.79E+Ol 5.97E+Ol u WD STJ 398279023 5/25/2016 Cs-134 -l.94E+OO 1.70E+OO 4.90E+OO u WD STJ 398279023 5/25/2016 Cs-137 1.22E+OO 1.60E+OO 5.55E+OO u WD STJ 398279023 5/25/2016 Fe-59 5.24E-01 3.50E+OO 1.15E+Ol u WD STJ 398279023 5/25/2016 I-131 -8.34E-01 4.34E+OO 1.39E+Ol u D-83 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 398279023 5/25/2016 K-40 1.60E+Ol 2.39E+Ol 8.33E+Ol u WD STJ 398279023 5/25/2016 La-140 l.68E+OO 3.71E+OO 1.29E+Ol u WD STJ 398279023 5/25/2016 Mn-54 -7.46E-01 1.47E+OO 4.60E+OO u WD STJ 398279023 5/25/2016 Nb-95 2.77E+OO l.63E+OO 5.71E+OO u WD STJ 398279023 5/25/2016 Ru-103 -3.21E+OO 1.88E+OO 4.67E+OO u WD STJ 398279023 5/25/2016 Ru-106 -7.77E+OO 1.46E+Ol 4.68E+Ol u WD STJ 398279023 5/25/2016 Sb-124 -4.36E+OO 4.57E+OO 1.29E+Ol u WD STJ 398279023 5/25/2016 Sb-125 3.72E+OO 4.20E+OO.

1.41E+Ol u WD STJ 398279023 5/25/2016 Se-75 -3.91E+OO 2.47E+OO 6.98E+OO u WD STJ 398279023 5/25/2016 Th-228 5.94E+OO 5.30E+OO l.23E+Ol u WD STJ 398279023 5/25/2016 Zn-65 7.50E+OO 3.78E+OO 1.24E+Ol u WD STJ 398279023 5/25/2016 Zr-95 2.93E+OO 2.62E+OO 9.25E+OO u WD STJ 398279024 5/25/2016 1-131 2.72E-01 2.69E-Ol 8.37E-01 u WD LTW 398279025 5/25/2016 Ac-228 2.38E+OO 7.0lE+OO 1.85E+Ol u WD LTW 398279025 5/25/2016 Ag-108m -l.83E+OO 1.27E+OO 3.62E+OO u WD LTW 398279025 5/25/2016 Ag-l!Om -l.20E-02 l.50E+OO 5.00E+OO u WD LTW 398279025 5/25/2016 Ba-140 -6.71E+OO 8.52E+OO 2.59E+Ol u WD LTW 398279025 5/25/2016 Be-7 9.89E-01 1.28E+Ol 4.22E+Ol u WD LTW 398279025 5/25/2016 BETA 1.68E+OO 1.06E+OO 2.91E+OO u ¥/D LTW 398279025 5/25/2016 Ce-141 1.35E-Ol 2.74E+OO 8.90E+OO u WD LTW 398279025 5/25/2016 Ce-144 -6.33E+OO 9.37E+OO 2.94E+Ol u WD LTW 398279025 5/25/2016 Co-57 1.82E+OO 1.26E+OO 4.06E+OO u WD LTW 398279025 5125/2016 Co-58 -1.54E+OO 1.44E+OO 4.03E+OO u WD LTW 398279025 5/25/2016 Co-60 6.53E-01 l.38E+OO 6.12E+OO u WD LTW 398279025 5/25/2016 Cr-51 9.59E+OO 1.58E+Ol 4.81E+Ol u WD LTW 398279025 5/25/2016 Cs-134 -9.77E-01 1.47E+OO 4.17E+OO u WD LTW 398279025 5/25/2016 Cs-137 6.42E+OO 2.47E+OO 3.40E+OO UI WD LTW 398279025 5/25/2016 Fe-59 -3.16E+OO 2.33E+OO 6.06E+OO u WD LTW 398279025 5/25/2016 1-131 l.98E+OO 4.08E+OO l.29E+Ol u WD LTW 398279025 5/25/2016 K-40 -3.52E+Ol 1.86E+Ol 5.41E+Ol u WD LTW 398279025 5/25/2016 La-140 3.48E+OO 2.91E+OO 1.05E+Ol u WD LTW 398279025 5/25/2016 Mn-54 3.39E+OO 1.91E+OO 4.71E+OO u WD LTW 398279025 5/25/2016 Nb-95 -5.03E-01 l.25E+OO 4.08E+OO u WD LTW 398279025 5/25/2016 Ru-103 -2.42E+OO l.52E+OO 4.13E+OO u WD LTW 398279025 5/25/2016 Ru-106 2.69E+Ol 1.15E+Ol 3.74E+Ol u WD LTW 398279025 5/25/2016 Sb-124 4.51E+OO 3.30E+OO l.20E+Ol u WD LTW 398279025 5/25/2016 Sb-125 6.14E-01 3.49E+OO l.16E+Ol u WD LTW 398279025 5/25/2016 Se-75 -1.09E+OO 2.63E+OO 5.46E+OO u WD LTW 398279025 5/25/2016 Th-228 -4.24E+OO 3.15E+OO 8.0lE+OO u WD LTW 398279025 5/25/2016 Zn-65 -4.36E-01 3.08E+OO l.OOE+Ol u WD LTW 398279025 5/25/2016 Zr-95 8.53E-01 2.00E+OO 6.93E+OO u WD LTW 398279026 5/25/2016 1-131 4.07E-01 2.87E-01 8.70E-Ol u WD STJ 399139023 6/8/2016 Ac-228 2.43E+OO 5.23E+OO l.32E+Ol u WD STJ 399139023 6/8/2016 Ag-108m -3.97E-01 8.42E-Ol 2.64E+OO u WD STJ 399139023 6/8/2016 Ag-llOm -9.68E-Ol l.23E+OO 3.72E+OO u WD STJ 399139023 6/8/2016 Ba-140 6.22E+OO 5.79E+OO l.96E+Ol u WD STJ 399139023.

6/8/2016 Be-7 -2.42E+OO 8.36E+OO 2.79E+Ol u WD STJ 399139023 6/8/2016 BETA l.86E+OO l.09E+OO 3.06E+OO u WD STJ 399139023 6/8/2016 Ce-141 9.21E-02 l.79E+OO 5.71E+OO u WD STJ 399139023 6/8/2016 Ce-144 4.26E+OO 6.08E+OO l.95E+Ol u D-84 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 399139023 6/8/2016 Co-57 7.66E-01 8.02E-01 2.57E+OO u WD STJ 399139023 6/8/2016 Co-58 -2.99E-Ol 9.16E-Ol 2.92E+OO u WD STJ 399139023 6/8/2016 Co-60 l.16E-Ol 8.23E-Ol 2.72E+OO u WD STJ 399139023 6/8/2016 Cr-51 -9.25E+OO l.OlE+Ol 3.14E+Ol u WD STJ 399139023 6/8/2016 Cs-134 3.71E-Ol .9.47E-Ol 3.13E+OO u WD STJ 399139023 6/8/2016 Cs-137 7.37E-Ol 9.74E-Ol 3.27E+OO u WD STJ 399139023 6/8/2016 Fe-59 -1.58E+OO l.83E+OO 5.64E+OO u WD STJ 399139023 6/8/2016 1-131 2.55E+OO 2.56E+OO 8.38E+OO u WD STJ 399139023 6/8/2016 K-40 -4.02E+OO 1.40E+Ol 4.34E+Ol u WD STJ 399139023 6/8/2016 La-140 -l.27E-Ol l.61E+OO 5.36E+OO u WD STJ 399139023 6/8/2016 Mn-54 8.51E-02 8.71E-Ol 2.84E+OO u WD STJ 399139023 6/8/2016 Nb-95 -9.07E-02 9.39E-Ol 3.05E+OO u WD STJ 399139023 6/8/2016 Ru-103 -1.lOE+OO l.lOE+OO 3.47E+OO u VID STJ 399139023 6/8/2016 Ru-106 l.03E+Ol 9.36E+OO 2.78E+Ol u WD STJ 399139023 6/8/2016 Sb-124 7.90E+OO 2.47E+OO 7.61E+OO UI WD STJ 399139023 6/8/2016 Sb-125 -2.15E+OO 2.61E+OO 7.95E+OO u WD STJ 399139023 6/8/2016 Se-75 -4.62E-02 l.17E+OO 3.85E+OO u WD STJ 399139023 6/8/2016 Th-228 4.14E-Ol l.95E+OO 6.08E+OO u WD STJ 399139023 6/8/2016 Zn-65 2.95E-Ol 2.18E+OO 6.28E+OO u WD STJ 399139023 6/8/2016 Zr-95 3.31E-03 l.63E+OO 5.32E+OO u WD STJ 399139024 6/8/2016 1-131 1.43E-Ol 2.97E-Ol 9.70E-Ol u WD LTW 399139025 6/8/2016 Ac-228 l.31E+Ol 8.0lE+OO 2.57E+Ol u WD LTW 399139025 6/8/2016 Ag-108111 l.08E+OO l.17E+OO 3.98E+OO u WD LTW 399139025 6/8/2016 Ag-110111 -l.52E+OO 2.0lE+OO 6.20E+OO u WD LTW 399139025 6/8/2016 Ba-140 -2.17E+OO 9.0lE+OO 2.89E+Ol u WD LTW 399139025 6/8/2016 Be-7 -2.17E+Ol 1.50E+Ol 3.93E+Ol u WD LTW 399139025 6/8/2016 BETA 2.32E+OO l.20E+OO 3.37E+OO u WD LTW 399139025 6/8/2016 Ce-141 -3.98E+OO 3.07E+OO 8.04E+OO u WD LTW 399139025 6/8/2016 Ce-144 5.99E+OO 8.58E+OO 2.87E+Ol u WD LTW 399139025 6/8/2016 Co-57 -1.30E+OO l.07E+OO 3.31E+OO u WD LTW 399139025 6/8/2016 Co-58 1.45E-Ol l.31E+OO 4.42E+OO u WD LTW 399139025 6/8/2016 Co-60 2.70E+OO 1.82E+OO 5.91E+OO u WD LTW 399139025 6/8/2016 Cr-51 -2.06E+OO 1.46E+Ol 4.91E+Ol u WD LTW 399139025 6/8/2016 Cs-134 -1.13E+OO l.37E+OO 4.18E+OO u WD LTW 399139025 6/8/2016 Cs-137 -8.54E-OI l.50E+OO 4.56E+OO u WD LTW 399139025 6/8/2016 Fe-59 l.82E+Ol 6.75E+OO 1.07E+OI UI WD LTW 399139025 6/8/2016 1-131 4.46E-OI 3.56E+OO l.20E+OI u WD LTW 399139025 6/8/2016 K-40 3.60E+Ol 2.64E+Ol 3.95E+OI u WD LTW 399139025 6/8/2016 La-140 4.08E+OO 3.47E+OO 1.23E+Ol u WD LTW 399139025 6/8/2016 Mn-54 l.97E+OO 1.39E+OO 4.84E+OO u WD LTW 399139025 6/8/2016 Nb-95 -l.27E+OO l.49E+OO 4.61E+OO u WD LTW 399139025 6/8/2016 Ru-103 -3.02E-Ol 1.50E+OO 4.86E+OO u WD LTW 399139025 6/8/2016 Ru-106 -7.27E+OO l.18E+Ol 3.58E+Ol u WD LTW 399139025 6/8/2016 Sb-124 -2.16E+OO 3.71E+OO 1.12E+Ol u WD LTW 399139025 6/8/2016 Sb-125 4.63E+OO 3.48E+OO l.18E+Ol u WD LTW 399139025 6/8/2016 Se-75 3.66E+OO 2.64E+OO 6.26E+OO u WD LTW 399139025 6/8/2016 Th-228 -4.79E+OO 3.18E+OO 9.22E+OO u vm LTW 399139025 6/8/2016 Zn-65 -l.49E+OO 2.91E+OO 8.93E+OO u WD LTW 399139025 6/8/2016 Zr-95 -5.63E-Ol 2.31E+OO 7.60E+OO u WD LTW 399139026 6/8/2016 I-131 -3.86E-01 2.57E-01 8.90E-OI u D-85 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 400075023 6/22/2016 Ac-228 2.72E-01 5.54E+OO l.82E+Ol u WD STJ 400075023 6/22/2016 Ag-108m -4.99E-01 l.09E+OO 3.43E+OO u WD STJ 400075023 6/22/2016 Ag-llOm -4.42E-01 2.07E+OO 5.72E+OO u WD STJ 400075023 6/22/2016 Ba-140 -3.40E+OO 6.36E+OO l.96E+Ol u WD STJ 400075023 6/22/2016 Be-7 l.04E+Ol 1.03E+Ol 3.50E+Ol u WD STJ 400075023 6/22/2016 BETA l.61E+OO 7.16E-01 2.0lE+OO u WD STJ 400075023 6/22/2016 Ce-141 6.67E-01 2.24E+OO 7.39E+OO u WD STJ 400075023 6/22/2016 Ce-144 -2.86E+OO 8.07E+OO 2.60E+Ol u WD STJ 400075023 6/22/2016 Co-57 -1.llE+OO 1.16E+OO 3.48E+OO u WD STJ 400075023 6/22/2016 Co-58 3.27E-01 l.38E+OO 4.39E+OO u WD STJ 400075023 6/22/2016 Co-60 7.48E-01 l.27E+OO 4.43E+OO u WD STJ 400075023 6/22/2016 Cr-51 -9.46E+OO 1.19E+Ol 3.74E+Ol u WD STJ 400075023 6/22/2016 Cs-134 7.29E-01 l.47E+OO 5.0lE+OO u WD STJ 400075023 6/22/2016 Cs-137 l.19E-01 2.67E+OO 4.12E+OO u WD STJ 400075023 6/22/2016 Fe-59 -4.53E-01 2.92E+OO 9.29E+OO u WD STJ 400075023 6/22/2016 I-131 -2.79E+OO 2.30E+OO 6.77E+OO*

u WD STJ 400075023 6/22/2016 K-40 1.05E+Ol 2.03E+Ol 6.73E+Ol u WD STJ 400075023 6/22/2016 La-140 l.51E+OO 2.23E+OO 7.77E+OO u WD STJ 400075023 6/22/2016 Mn-54 -l.54E-Ol l.26E+OO 4.llE+OO u WD STJ 400075023 6/22/2016 Nb-95 1.55E+OO 1.92E+OO 4.33E+OO u WD STJ 400075023 6/22/2016 Ru-103 -8.71E-02 1.56E+OO 4.41E+OO u WD STJ 400075023 6/22/2016 Ru-106 -1.68E+Ol l.12E+Ol 3.12E+Ol u WD STJ 400075023 6/22/2016 Sb-124 -4.59E+OO 3.39E+OO 8.42E+OO u WD STJ 400075023 6/22/2016 Sb-125 -2.03E-01 3.69E+OO 1.21E+Ol u WD STJ 400075023 6/22/2016 Se-75 1.66E+OO l.64E+OO 5.66E+OO u WD STJ 400075023 6/22/2016 Th-228 5.48E+OO 3.48E+OO 9.53E+OO u WD STJ 400075023 6/22/2016 Zn-65 -3.85E-01 3.12E+OO 8.51E+OO u WD STJ 400075023 6/22/2016 Zr-95 -4.51E+OO 2.93E+OO 6.37E+OO u WD STJ 400075024 6/22/2016 I-131 -3.08E-Ol 2.26E-01 8.19E-01 u WD LTW 400075025 6/22/2016 Ac-228 1.04E+Ol 8.93E+OO 1.99E+Ol u WD LTW 400075025 6/22/2016 Ag-108m -l.02E+OO l.25E+OO 3.79E+OO u WD LTW 400075025 6/22/2016 Ag-llOm -1.22E+OO l.73E+OO 5.17E+OO u WD LTW 400075025 6/22/2016 Ba-140 8.SOE-01 6.61E+OO 2.13E+Ol u WD LTW 400075025 6/22/2016 Be-7 9.llE+OO l.13E+Ol 3.77E+Ol u WD LTW 400075025 6/22/2016 BETA -4.41E-Ol 8.03E-01 2.70E+OO u WD LTW 400075025 6/22/2016 Ce-141 7.27E-01 2.51E+OO 8.18E+OO u WD LTW 400075025 6/22/2016 Ce-144 1.65E+Ol 1.0lE+Ol 3.22E+Ol u WD LTW 400075025 6/22/2016 Co-57 7.91E-01 l.23E+OO 4.07E+OO u WD LTW 400075025 6/22/2016 Co-58 5.92E-01 l.25E+OO 4.25E+OO u WD LTW 400075025 6/22/2016 Co-60 l.16E+OO 1.llE+OO 4.02E+OO u WD LTW 400075025 6/22/2016 Cr-51 l.04E+OO l.33E+Ol 4.43E+Ol u WD LTW 400075025 6/22/2016 Cs-134 9.04E-01 1.45E+OO 4.94E+OO u WD LTW 400075025 6/22/2016 Cs-137 -5.62E-Ol l.36E+OO 4.37E+OO u WD LTW 400075025 6/22/2016 Fe-59 2.84E+OO 2.64E+OO 9.34E+OO u WD LTW 400075025 6/22/2016 I-131 -2.21E+OO 2.54E+OO 6.95E+OO u WD LTW 400075025 6/22/2016 K-40 -1.22E+Ol 1.65E+Ol 5.66E+Ol u WD LTW 400075025 6/22/2016 La-140 5.37E-01 2.54E+OO 8.39E+OO u WD LTW 400075025 6/22/2016 Mn-54 -2.30E+OO l.39E+OO 3.54E+OO u WD LTW 400075025 6/22/2016 Nb-95 2.87E-01 l.29E+OO 4.32E+OO u WD LTW 400075025 6/22/2016 Ru-103 -1.16E+OO l.37E+OO 4.05E+OO u D-86 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 400075025 6/22/2016 Ru-106 -6.62E+OO 1.14E+OI 3.64E+OI u WD LTW 400075025 6/22/2016 Sb-124 -3.64E+OO 3.14E+OO 8.55E+OO u WD LTW 400075025 6/22/2016 Sb-125 -l.75E+OO 4.07E+OO I.24E+Ol u WD LTW 400075025 6/22/2016 Se-75 -7.53E-02 I.67E+OO 5.60E+OO u WD LTW 400075025 6/22/2016 Th-228 -3.0IE+OO 2.94E+OO 9.05E+OO u WD LTW 400075025 6/22/2016 Zn-65 5.15E-OI 2.92E+OO 9.89E+OO u WD LTW 400075025 6/22/2016 Zr-95 1.57E+OO 2.50E+OO 8.53E+OO u WD LTW 400075026 6/22/2016 I-131 4.18E-OI 2.81E-Ol 8.25E-OI u WD STJ 401150023 7/6/2016 Ac-228 6.83E+OO 3.56E+OO 6.39E+OO UI WD STJ 401150023 7/6/2016 Ag-108111

-4.76E-Ol 4.36E-01 1.3IE+OO u WD STJ 401150023 7/6/2016 Ag-110111

-9.51E-Ol 7.53E-01 I.90E+OO u WD STJ 401150023 7/6/2016 Ba-140 4.19E+OO 2.46E+OO 7.88E+OO u WD STJ 401150023 7/6/2016 Be-7 -2.37E-OI 3.93E+OO l.32E+Ol u WD STJ 401150023 7/6/2016 BETA 2.04E+OO 1.14E+OO 3.17E+OO u WD STJ 401150023 7/6/2016 Ce-141 6.99E-OI 1.95E+OO 2.89E+OO u WD STJ 401150023 7/6/2016 Ce-144 -2.53E+OO 3.51E+OO 1.IlE+Ol u WD STJ 401150023 7/6/2016 Co-57 1.73E-OI 4.48E-Ol l.51E+OO u WD STJ 401150023 7/6/2016 Co-58 7.93E-OI 4.45E-Ol l.41E+OO u WD STJ 401150023 7/6/2016 Co-60 2.06E-Ol 4.78E-OI l.61E+OO u WD STJ 401150023 7/6/2016 Cr-51 4.36E+OO 6.53E+OO 1.41E+OI u WD STJ 401150023 7/6/2016 Cs-134 3.30E-Ol 5.06E-Ol l.67E+OO u WD STJ 401150023 7/6/2016 Cs-137 2.23E+OO 6.36E-Ol 1.54E+OO UI WD STJ 401150023 7/6/2016 Fe-59 -6.59E-OI 9.02E-OI 2.92E+OO u WD STJ 401150023 7/6/2016 I-131 l.44E-OI 8.63E-01 2.80E+OO u WD STJ 401150023 7/6/2016 K-40 4.67E+OO 1.08E+Ol 1.32E+OI u WD STJ 401150023 7/6/2016 La-140 -7.48E-OI 7.32E-OI 2.22E+OO u WD STJ 401150023 7/6/2016 Mn-54 -4.52E-Ol 4.24E-OI l.29E+OO u WD STJ 401150023 7/6/2016 Nb-95 7. l 7E-OI 4.85E-OI 1.56E+OO u WD STJ 401150023 7/6/2016 Ru-103 7.86E-Ol 5.89E-OI I.70E+OO u WD STJ 401150023 7/6/2016 Ru-106 -7.41E-Ol 4.00E+OO 1.32E+OI u WD STJ 401150023 7/6/2016 Sb-124 -1.15E+OO l.37E+OO 3.74E+OO u WD STJ 401150023 7/6/2016 Sb-125 -l.22E+OO l.36E+OO 4.18E+OO u WD STJ 401150023 7/6/2016 Se-75 -3.12E-OI 6.68E-OI 2.16E+OO u WD STJ 401150023 7/6/2016 Th-228 4.12E+OO 2.21E+OO 3.52E+OO UI WD STJ 401150023 7/6/2016 Zn-65 5.56E-Ol 9.38E-01 3.18E+OO u WD STJ 401150023 7/6/2016 Zr-95 -6.73E-Ol 7.67E-Ol 2.40E+OO u WD STJ 401150024 7/6/2016 I-131 l.92E-Ol 2.67E-OI 8.34E-OI u WD LTW 401150025 7/6/2016 Ac-228 1.66E+OO 3.49E+OO 5.58E+OO u WD LTW 401150025 7/6/2016 Ag-108111

-4.lOE-02 4.13E-01 l.34E+OO u WD LTW 401150025 7/6/2016 Ag-110111

-4.36E-Ol 5.98E-OI l.90E+OO u WD LTW 401150025 7/6/2016 Ba-140 9.98E-OI 2.49E+OO 8.05E+OO u WD LTW 401150025 7/6/2016 Be-7 -8.98E-02 4.62E+OO 1.38E+Ol u WD LTW 401150025 7/6/2016 BETA 4.78E-OI 9.97E-Ol 3.09E+OO u WD LTW 401150025 7/6/2016 Ce-141 3.3 IE-01 I.19E+OO 2.75E+OO u WD LTW 401150025 7/6/2016 Ce-144 3.00E+OO 3.21E+OO 1.02E+Ol u WD LTW 401150025 7/6/2016 Co-57 -3.13E-Ol 4.ISE-01 l.32E+OO u WD LTW 401150025 7/6/2016 Co-58 -5.52E-Ol 4.65E-Ol 1.43E+OO u WD LTW 401150025 7/6/2016 Co-60 3.60E-OI 4.55E-01 l.54E+OO u WD LTW 401150025 7/6/2016 Cr-51 9.67E+OO 4.64E+OO l.41E+OI u WD LTW 401150025 7/6/2016 Cs-134 1.06E+OO 5.60E-01 1.53E+OO u D-87 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 401150025 7/6/2016 Cs-137 -2.06E-02 4.71E-Ol l.58E+OO u WD LTW 401150025 7/6/2016 Fe-59 5.18E-03 l.IIE+OO 3.lOE+OO u WD LTW 401150025 7/6/2016 I-131 -4.l IE-01 8.38E-01 2.72E+OO u WD LTW 401150025 7/6/2016 K-40 2.90E+OO 9.41E+OO l.42E+Ol u WD LTW 401150025 7/6/2016 La-140 l.07E+OO 7.68E-01 2.54E+OO u WD LTW 401150025 7/6/2016 Mn-54 3.44E-01 4.59E-01 l.45E+OO u WD LTW 401150025 7/6/2016 Nb-95 -6.56E-01 6.63E-01 1.57E+OO u WD LTW 401150025 7/6/2016 Ru-103 -1.36E+OO 6.56E-01 l.50E+OO u WD LTW 401150025 7/6/2016 Ru-106 -1.42E+OO 4.02E+OO l.34E+Ol u WD LTW 401150025 7/6/2016 Sb-124 -5.59E-01 9.89E-01 3.13E+OO u WD LTW 401150025 7/6/2016 Sb-125 4.24E-01 l.26E+OO 4.14E+OO u WD LTW 401150025 7/6/2016 Se-75 -4.56E-01 6.04E-01 l.97E+OO u WD LTW 401150025 7/6/2016 Th-228 3.70E-01 1.62E+OO 3.24E+OO u WD LTW 401150025 7/6/2016 Zn-65 7.56E-01 9.60E-01 2.76E+OO u WD LTW 401150025 7/6/2016 Zr-95 -5.84E-01 7.95E-01 2.55E+OO u WD LTW 401150026 7/6/2016 1-131 -l.96E-02 2.48E-01 8.22E-OI u WD STJ 402227023 7/20/2016 Ac-228 -1.50E+OO 5.62E+OO 1.89E+OI u WD STJ 402227023 7/20/2016 Ag-108111

-2.36E+OO l.26E+OO 3.37E+OO u WD STJ 402227023 7/20/2016 Ag-llOm -2.14E+OO l.59E+OO 4.44E+OO u WD STJ 402227023 7/20/2016 Ba-140 -5.99E+OO 7.48E+OO l.95E+Ol U WD STJ 402227023 7/20/2016 Be-7 9.6IE+OO 1.28E+Ol 3.89E+Ol U WD STJ 402227023 7/20/2016 BETA 2.98E-OI 9.29E-Ol 2.90E+OO U WD STJ 402227023 7/20/2016 Ce-141 1.74E+OO 2.47E+OO 7.83E+OO U WD STJ 402227023 7/20/2016 Ce-144 8.04E+OO 9.26E+OO 2.81E+Ol U WD STJ 402227023 7/20/2016 Co-57 2.66E-02 l.29E+OO 3.85E+OO U WD STJ 402227023 7/20/2016 Co-58 -2.84E+OO 1.45E+OO 3.35E+OO U WD STJ 402227023 7/20/2016 Co-60 5.28E-02 9.32E-Ol 3.07E+OO U WD STJ 402227023 7/20/2016 Cr-51 l.50E+Ol l.32E+Ol 4.37E+Ol U WD STJ 402227023 7/20/2016 Cs-134 9.23E-Ol l.35E+OO 4.55E+OO U WD STJ 402227023 7/20/2016 Cs-137 6.77E-01 2.56E+OO 4.36E+OO U WD STJ 402227023 7/20/2016 Fe-59 2.57E+OO 2.63E+OO 9.15E+OO U WD STJ 402227023 7/20/2016 I-131 -2.60E+OO 2.55E+OO 7.48E+OO U WD sn 402227023 7/20/2016 K-40 1.95E+Ol l.82E+Ol 6.49E+Ol U WD STJ 402227023 7/20/2016 La-140 -2.44E+OO 2.23E+OO 6.29E+OO U WD STJ 402227023 7/20/2016 Mn-54 5.48E-Ol 1.34E+OO 4.42E+OO U WD STJ 402227023 7/20/2016 Nb-95 5.96E-01 l.24E+OO 4.15E+OO U WD STJ 402227023 7/20/2016 Ru-103 1.48E+OO l.45E+OO 4.97E+OO U WD STJ 402227023 7/20/2016 Ru-106 2.34E+Ol l.50E+Ol 4.54E+Ol U WD STJ 402227023 7/20/2016 Sb-124 -l.89E+OO 3.33E+OO l.03E+Ol U WD STJ 402227023 7/20/2016 Sb-125 1.88E+OO 3.37E+OO l.32E+Ol U WD STJ 402227023 7/20/2016 Se-75 4.47E-01 l.75E+OO 5.76E+OO U WD STJ 402227023 7/20/2016 Th-228 3.0IE+OO 3.54E+OO 8.83E+OO U WD STJ 402227023 7120/2016 Zn-65 l.09E-01 2.77E+OO 9.21E+OO U WD STJ 402227023 7/20/2016 Zr-95 5.00E-01 l.96E+OO 6.50E+OO U WD STJ 402227024 7/20/2016 I-131 6.73E-02 2.56E-01 8.27E-01 u WD LTW 402227025 7/20/2016 Ac-228 -2.95E+OO 7.38E+OO 2.38E+Ol U WD LTW 402227025 7/20/2016 Ag-108111

-3.54E-01 l.36E+OO 4.29E+OO U WD LTW 402227025 7/20/2016 Ag-llOm -6.18E-01 2.29E+OO 7.38E+OO U WD LTW 402227025 7/20/2016 Ba-140 -l.41E+OO 8.35E+OO 2.79E+Ol U WD LTW 402227025 7/20/2016 Be-7 4.37E+OO l.50E+Ol 4.88E+OI U D-88 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 402227025 7/20/2016 BETA -5.58E-01 7.58E-Ol 2.60E+OO u WD LTW 402227025 7/20/2016 Ce-141 2.0lE+OO 3.58E+OO l.07E+Ol u WD LTW 402227025 7/20/2016 Ce-144 -7.12E+OO l.14E+Ol 3.70E+Ol u WD LTW 402227025 7/20/2016 Co-57 8.88E-Ol l.53E+OO 5.17E+OO u WD LTW 402227025 7/20/2016 Co-58 -9.57E-01 l.61E+OO 5.0lE+OO u WD LTW 402227025 7/20/2016 Co-60 -8.53E-01 2.16E+OO 6.68E+OO u WD LTW 402227025 7/20/2016 Cr-51 7.06E+OO 1.59E+Ol 5.25E+Ol u WD LTW 402227025 7/20/2016 Cs-134 -l.88E+OO 1.99E+OO 5.97E+OO u WD LTW 402227025 7/20/2016 Cs-137 3.92E-Ol 1.63E+OO 5.52E+OO u WD LTW 402227025 7/20/2016 Fe-59 -1.44E+OO 3.37E+OO l.05E+Ol u WD LTW 402227025 7/20/2016 I-131 5.58E-Ol 3.36E+OO l.lOE+Ol u WD LTW 402227025 7/20/2016 K-40 1.08E+Ol 2.44E+Ol 3.65E+Ol u WD LTW 402227025 7/20/2016 La-140 -4.78E+OO 3.04E+OO 7.53E+OO u WD LTW 402227025 7/20/2016 Mn-54 l.73E+OO l.39E+OO 5.lOE+OO u WD LTW 402227025 7/20/2016 Nb-95 -l.82E+OO 1.78E+OO 5.05E+OO u WD LTW 402227025 7/20/2016 Ru-103 -2.44E+OO 1.91E+OO 5.27E+OO u WD LTW 402227025 7/20/2016 Ru-106 l.62E+Ol 1.00E+Ol 5.28E+Ol u WD LTW 402227025 7/20/2016 Sb-124 -l.91E+OO 3.85E+OO 1.20E+Ol u WD LTW 402227025 7/20/2016 Sb-125 1.18E+Ol 5.39E+OO l.71E+Ol u WD LTW 402227025 7/20/2016 Se-75 6.46E-Ol 2.20E+OO 7.29E+OO u WD LTW 402227025 7/20/2016 Th-228 3.03E+OO 4.31E+OO 1.23E+Ol u WD LTW 402227025 7/20/2016 Zn-65 1.23E+Ol 4.0lE+OO 6.72E+OO UI WD LTW 402227025 7/20/2016 Zr-95 -UlE-01 2.82E+OO 9.35E+OO u WD LTW 402227026 7/20/2016 I-131 5.81E-Ol 2.91E-Ol 8.20E-Ol u WD STJ 403299023 8/3/2016 Ac-228 -l.76E+OO 3.09E+OO 6.68E+OO u WD STJ 403299023 8/3/2016 Ag-108m -8.15E-Ol 4.65E-Ol UOE+OO u WD STJ 403299023 8/3/2016 Ag-llOm 2.29E-Ol 7.18E-Ol 2.02E+OO u WD STJ 403299023 8/3/2016 Ba-140 2.69E+OO 3.17E+OO 7.72E+OO u WD STJ 403299023 8/3/2016 Be-7 6.78E+OO 4.32E+OO 1.40E+Ol u WD STJ 403299023 8/3/2016 BETA 2.25E+OO 9.41E-Ol 2.62E+OO u WD STJ 403299023 8/3/2016 Ce-141 2.89E+OO l.14E+OO 2.73E+OO UI WD STJ 403299023 8/3/2016 Ce-144 -6.13E+OO 3.64E+OO 9.87E+OO u WD STJ 403299023 8/3/2016 Co-57 -1.57E-Ol 4.lOE-01 l.30E+OO u WD STJ 403299023 8/3/2016 Co-58 3.44E-02 4.63E-Ol 1.51E+OO u WD STJ 403299023 8/3/2016 Co-60 6.62E-Ol 5.36E-Ol l.75E+OO u WD STJ 403299023 8/3/2016 Cr-51 -2.37E+OO 4.41E+OO 1.42E+Ol u WD STJ 403299023 8/3/2016 Cs-134 -3.35E-OI 7.46E-OI 1.65E+OO u WD STJ 403299023 8/3/2016 Cs-137 -3.lOE-01 4.81E-Ol 1.54E+OO u WD STJ 403299023 8/3/2016 Fe-59 1.05E+OO 8.93E-Ol 2.95E+OO u WD STJ 403299023 8/3/2016 I-131 5.40E-Ol 8.0lE-01 2.61E+OO u WD STJ 403299023 8/3/2016 K-40 5.37E+OO l.17E+OI 1.48E+OI u WD STJ 403299023 8/3/2016 La-140 -8.81E-OI 7.60E-OI 2.34E+OO u WD STJ 403299023 8/3/2016 Mn-54 5.28E-OI 4.87E-OI 1.57E+OO u WD STJ 403299023 8/3/2016 Nb-95 l.19E-OI 4.64E-OI l.52E+OO u WD STJ 403299023 8/3/2016 Ru-103 -l.96E-Ol 5.51E-OI l.59E+OO u WD STJ 403299023 8/3/2016 Ru-106 1.48E+OO 4.25E+OO 1.42E+OI u WD STJ 403299023 8/3/2016 Sb-124 5.69E-02 1.lOE+OO 3.68E+OO u WD STJ 403299023 8/3/2016 Sb-125 -1.16E+OO l.33E+OO 4.12E+OO u WD STJ 403299023 8/3/2016 Se-75 -3.67E-Ol 6.16E-Ol 2.00E+OO u WD STJ 403299023 8/3/2016 Th-228 -l.39E+OO 1.58E+OO 3.15E+OO u D-89 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 403299023 8/3/2016 Zn-65 2.24E-01 1.06E+OO 3.05E+OO u WD STJ 403299023 8/3/2016 Zr-95 -1.llE+OO 8.71E-Ol 2.62E+OO u WD STJ 403299024 8/3/2016 I-131 7.15E-02 1.58E-01 5.02E-01 u WD LTW 403299025 8/3/2016 Ac-228 3.14E+OO 4.08E+OO 7.14E+OO u WD LTW 403299025 8/3/2016 Ag-108m 8.14E-02 4.41E-01 1.45E+OO u WD LTW 403299025 8/3/2016 Ag-llOm 3.35E-Ol 6.98E-01 2.02E+OO u WD LTW 403299025 8/3/2016 Ba-140 -2.96E-01 2.44E+OO 7.84E+OO u WD LTW 403299025 8/3/2016 Be-7 -1.51E+OO 4.13E+OO l.33E+Ol u WD LTW 403299025 8/3/2016 BETA l.72E+OO 9.38E-01 2.74E+OO u WD LTW 403299025 8/3/2016 Ce-141 -9.27E-Ol 8.51E-01 2.64E+OO u WD LTW 403299025 8/3/2016 Ce-144 -1.66E+OO 3.09E+OO 9.98E+OO u WD LTW 403299025 8/3/2016 Co-57 l.56E-01 4.05E-Ol l.34E+OO u WD LTW 403299025 8/3/2016 Co-58 7.00E-01 5.06E-Ol l.62E+OO u WD LTW 403299025 8/3/2016 Co-60 5.55E-Ol 5.65E-Ol l.67E+OO u WD LTW 403299025 8/3/2016 Cr-51 -3.95E+OO 4.51E+OO l.45E+Ol u WD LTW 403299025 8/3/2016 Cs-134 l.56E-Ol 5.28E-Ol l.76E+OO u WD LTW 403299025 8/3/2016 Cs-137 -9.82E-01 l.05E+OO 2.07E+OO u WD LTW 403299025 8/3/2016 Fe-59 -9.39E-01 9.15E-01 2.74E+OO u WD LTW 403299025 8/3/2016 I-131 -7.83E-Ol 8.36E-Ol 2.66E+OO u WD LTW 403299025 8/3/2016 K-40 -6.61E+OO 8.13E+OO 2.05E+Ol u WD LTW 403299025 8/3/2016 La-140 l.14E+OO 7.92E-Ol 2.61E+OO u WD LTW 403299025 8/3/2016 Mn-54 7.67E-02 4.62E-Ol l.53E+OO u WD LTW 403299025 8/3/2016 Nb-95 2.15E-Ol 4.77E-Ol l.60E+OO u WD LTW 403299025 8/3/2016 Ru-103 -4.96E-Ol 5.42E-Ol l.68E+OO u WD LTW 403299025 8/3/2016 Ru-106 7.61E-Ol 4.22E+OO l.43E+Ol u WD LTW 403299025 8/3/2016 Sb-124 -l.23E+OO l.16E+OO 3.45E+OO u WD LTW 403299025 8/3/2016 Sb-125 l.02E+OO l.35E+OO 4.45E+OO u WD LTW 403299025 8/3/2016 Se-75 -4.03E-Ol 6.13E-Ol 2.03E+OO u WD LTW 403299025 8/3/2016 Th-228 l.56E+OO l.89E+OO 3.49E+OO u WD LTW 403299025 8/3/2016 Zn-65 -l.36E+OO 9.83E-Ol 2.82E+OO u WD LTW 403299025 8/3/2016 Zr-95 -4.90E-01 8.69E-01 2.82E+OO U WD LTW 403299026 8/3/2016 I-131 -1.85E-Ol l.51E-01 5.25E-Ol u WD STJ 404249023 8/17/2016 Ac-228 -2.58E+OO 3.02E+OO 6.42E+OO U WD STJ 404249023 8/17/2016 Ag-108m -3.48E-02 3.43E-01 l.15E+OO U WD STJ 404249023 8/17/2016 Ag-llOm -8.50E-Ol 6.38E-01 l.79E+OO U WD STJ 404249023 8/17/2016 Ba-140 2.77E+OO 2.54E+OO 8.45E+OO U WD STJ 404249023 8/17/2016 Be-7

4.95E+OO 3.86E+OO l.28E+Ol U WD STJ 404249023 8/17/2016 BETA 1.54E+OO 7.71E-01 2.0lE+OO U WD STJ 404249023 8/17/2016 Ce-141 -I.67E+OO l.25E+OO 2.68E+OO U WD STJ 404249023 8/17/2016 Ce-144 2.69E+OO 3.00E+OO 9.64E+OO U WD STJ 404249023 8/17/2016 Co-57 9.30E-02 3.80E-01 l.24E+OO U WD STJ 404249023 8117/2016 Co-58 -l.51E-01 4.47E-01 l.41E+OO U WD STJ 404249023 8/17/2016 Co-60 4.92E-01 4.47E-01 1.53E+OO U WD STJ 404249023 8/17/2016 Cr-51 7.35E+OO 4.91E+OO l.35E+Ol U WD STJ 404249023 8/17/2016 Cs-134 4.91E-01 4.74E-01 1.55E+OO U WD STJ 404249023 8/17/2016 Cs-137 8.71E-02 4.42E-01 l.45E+OO U WD STJ 404249023 8/17/2016 Fe-59 9.92E-02 8.78E-Ol 2.97E+OO U WD STJ 404249023 8/17/2016 I-131 5.49E-01 9.33E-01 3.05E+OO U WD STJ 404249023 8/17/2016 K-40 4.15E+OO l.29E+Ol l.36E+Ol U WD $1) 404249023 8/17/2016 La-140 -8.79E-01 7.95E-01 2.31E+OO U D-90 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 404249023 8/17/2016 Mn-54 -4.06E-01 4.21E-01 1.25E+OO u WD STJ 404249023 8/17/2016 Nb-95 9.21E-02 4.66E-01 l.51E+OO u WD STJ 404249023 8117/2016 Ru-103 -9.24E-02 4.92E-01 1.45E+OO u WD STJ 404249023 8/17/2016 Ru-106 -4.38E+OO 3.70E+OO 1.lOE+Ol u WD STJ 404249023 8/17/2016 Sb-124 3.67E-01 1.14E+OO 3.77E+OO u WD STJ 404249023 8/17/2016 Sb-125 2.65E-01 1.09E+OO 3.69E+OO u WD STJ 404249023 8/17/2016 Se-75 -3.78E-02 5.59E-01 1.92E+OO u WD STJ 404249023 8/17/2016 Th-228 -l.71E+OO 1.57E+OO 3.24E+OO u WD STJ 404249023 8/17/2016 Zn-65 l.31E+OO 9.65E-01 3.26E+OO u WD STJ 404249023 8/17/2016 Zr-95 5.69E-01 7.71E-01 2.54E+OO u WD STJ 404249024 8/17/2016 I-131 3.22E-01 2.82E-01 8.38E-01 u WD LTW 404249025 8/17/2016 Ac-228 -7.41E-01 3.33E+OO 6.88E+OO u WD LTW 404249025 8/17/2016 Ag-108m 8.91E-04 3.86E-01 l.29E+OO u WD LTW 404249025 8/17/2016 Ag-llOm -4.05E-01 5.89E-01 1.78E+OO u WD LTW 404249025 8117/2016 Ba-140 l.27E+OO 2.49E+OO 8.28E+OO u WD LTW 404249025 8/17/2016 Be-7 -2.58E+OO 4.09E+OO 1.32E+Ol u WD LTW 404249025 8117/2016 BETA l.25E+OO l.OlE+OO 3.03E+OO u WD LTW 404249025 8/17/2016 Ce-141 l.61E+OO l.96E+OO 2.68E+OO u WD LTW 404249025 8/17/2016 Ce-144 2.30E+OO 3.91E+OO 1.02E+Ol u WD LTW 404249025 8/17/2016 Co-57 -2.81E-01 4.08E-01 l.30E+OO u WD LTW 404249025 8/17/2016 Co-58 4.97E-01 4.63E-01 1.50E+OO u WD LTW 404249025 8/17/2016 Co-60 5.61E-01 4.67E-01 l.57E+OO u WD LTW 404249025 8/17/2016 Cr-51 6.17E-01 4.27E+OO 1.46E+Ol u WD LTW 404249025 8117/2016 Cs-134 3.56E-01 5.07E-01 1.48E+OO u WD LTW 404249025 8/17/2016 Cs-137 9.51E-02 4.03E-01 1.32E+OO u WD LTW 404249025 8117/2016 Fe-59 l.09E-01 8.28E-01 2.79E+OO u WD LTW 404249025 8117/2016 I-131 -6.63E-01 9.IOE-01 2.98E+OO u WD LTW 404249025 8/17/2016 K-40 -1.19E+Ol 8.91E+OO 2.03E+Ol u WD LTW 404249025 8/17/2016 La-140 -1.17E+OO 9.62E-01 2.77E+OO u WD LTW 404249025 8/17/2016 Mn-54 -3.77E-01 4.54E-01 l.36E+OO u WD LTW 404249025 8/17/2016 Nb-95 -2.95E-01 4.84E-01 1.32E+OO u WD LTW 404249025 8117/2016 Ru-103 -2.62E-01 5.0lE-01 1.44E+OO u WD LTW 404249025 8/17/2016 Ru-106 -6.97E+OO 4.03E+OO l.llE+Ol u WD LTW 404249025 8/17/2016 Sb-124 2.57E-02 1.15E+OO 3.72E+OO u WD LTW 404249025 8/17/2016 Sb-125 -l.25E+OO 1.18E+OO 3.72E+OO u WD LTW 404249025 8/17/2016 Se-75 -l.42E+OO 9.26E-01 2.02E+OO u WD LTW 404249025 8117/2016 Th-228 2.27E+OO l.86E+OO 2.64E+OO u WD LTW 404249025 8/17/2016 Zn-65 -6.67E-01 8.70E-01 2.75E+OO u WD LTW 404249025 8/17/2016 Zr-95 5.67E-01 8.07E-01 2.63E+OO u WD LTW 404249026 8/17/2016 I-131 -7.09E-02 2.43E-01 8.22E-01 u WD STJ 409459001 9/28/2016 H-3 4.18E+02 5.05E+02 1.60E+03 u WD LTW 409459002 9/28/2016 H-3 8.89E+Ol 4.95E+02 l.62E+03 u WD STJ 405181023 8/31/2016 Ac-228 7.62E+OO 6.43E+OO 1.62E+Ol u WD STJ 405181023 8/31/2016 Ag-108m -l.75E-01 8.53E-01 2.80E+OO u WD STJ 405181023 8/31/2016 Ag-llOm -2.40E+OO l.31E+OO 3.05E+OO u WD STJ 405181023 8/31/2016 Ba-140 -l.51E+OO 4.91E+OO 1.58E+Ol u WD STJ 405181023 8/31/2016 Be-7 1.19E+Ol l.31E+Ol 2.73E+Ol u WD STJ 405181023 8/31/2016 BETA 2.25E+OO 9.30E-01 2.62E+OO u WD STJ 405181023 8/31/2016 Ce-141 -6.3 lE-01 1.71E+OO 5.78E+OO u WD STJ 405181023 8/31/2016 Ce-144 l.91E+OO 6.92E+OO 2.16E+Ol u D-91 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 405181023 8/31/2016 Co-57 -l.99E-02 8.44E-01 2.90E+OO u WD STJ 405181023 8/31/2016 Co-58 l.18E+OO l.17E+OO 3.lOE+OO u WD STJ 405181023 8/31/2016 Co-60 l.OlE+OO l.OOE+OO 3.57E+OO u WD STJ 405181023 8/31/2016 Cr-51 l.19E+OO 8.28E+OO 2.79E+Ol u WD STJ 405181023 8/31/2016 Cs-134 l.47E-01 9.54E-01 3.12E+OO u WD STJ 405181023 8/31/2016 Cs-137 3.81E-01 1.05E+OO 3.49E+OO u WD STJ 405181023 8/31/2016 Fe-59 -9.05E-01 l.89E+OO 5.68E+OO u WD STJ 405181023 8/31/2016 I-131 7.66E-01 1.67E+OO 5.65E+OO u WD STJ 405181023 8/31/2016 K-40 -3.94E+OO 1.43E+Ol 4.24E+Ol u WD STJ 405181023 8/31/2016 La-140 4.61E-01 1.49E+OO 4.61E+OO u WD STJ 405181023 8/31/2016 Mn-54 -8.39E-01 9.56E-01 2.81E+OO u WD STJ 405181023 8/31/2016 Nb-95 -2.74E+OO l.39E+OO 2.89E+OO u WD STJ 405181023 8/31/2016 Ru-103 l.lOE+OO 9.70E-01 3.29E+OO u WD STJ 405181023 8/31/2016 Ru-106 -5.73E-02 7.71E+OO 2.52E+Ol u WD STJ 405181023 8/31/2016 Sb-124 4.65E+OO 2.32E+OO 8.16E+OO u WD STJ 405181023 8/31/2016 Sb-125 -1.llE+OO 2.55E+OO 8.24E+OO u WD STJ 405181023 8/31/2016 Se-75 -5.00E-01 l.18E+OO 3.90E+OO u WD STJ 405181023 8/31/2016 Th-228 5.lOE+OO 4.15E+OO 7.0lE+OO u WD STJ 405181023 8/31/2016 Zn-65 -5.29E-01 1.68E+OO 5.14E+OO u WD STJ 405181023 8/31/2016 Zr-95 -8.23E-01 1.83E+OO 5.23E+OO u WD STJ 405181024 8/31/2016 I-131 -l.41E-01 l.55E-01 5.18E-01 u WD LTW 405181025 8/31/2016 Ac-228 -9.62E-01 4.31E+OO l.19E+Ol u WD LTW 405181025 8/31/2016 Ag-108m -1.49E+OO 9.48E-Ol 2.05E+OO u WD LTW 405181025 8/31/2016 Ag-llOm -l.20E-01 l.31E+OO 3.78E+OO u WD LTW 405181025 8/31/2016 Ba-140 3.71E+OO 4.14E+OO 1.40E+Ol u WD LTW 405181025 8/31/2016 Be-7 4.70E+OO 6.72E+OO 2.27E+Ol u WD LTW 405181025 8/31/2016 BETA 1.48E+OO 8.71E-01 2.58E+OO u WD LTW 405181025 8/31/2016 Ce-141 1.81E+OO 1.41E+OO 4.48E+OO u WD LTW 405181025 8/31/2016 Ce-144 -2.60E+OO 4.82E+OO 1.50E+Ol u WD LTW 405181025 8/31/2016 Co-57 -5.64E-01 7.23E-01 2.03E+OO u WD LTW 405181025 8/31/2016 Co-58 4.85E-01 7.78E-01 2.57E+OO u WD LTW 405181025 8/31/2016 Co-60 1.59E+OO 9.03E-01 3.16E+OO u WD LTW 405181025 8/31/2016 Cr-51 l.02E+Ol 7.60E+OO 2.58E+Ol u WD LTW 405181025 8/31/2016 Cs-134 ** -3.59E-01 9.17E-01 2.81E+OO u WD LTW 405181025 8/31/2016 Cs-137 5.06E-01 8.29E-01 2.76E+OO u WD LTW 405181025 8/31/2016 Fe-59 -8.32E-01 1.83E+OO 5.06E+OO u WD LTW 405181025 8/31/2016 I-131 -5.93E-01 l.46E+OO 4.78E+OO u WD LTW 405181025 8/31/2016 K-40 5.48E+OO l.28E+Ol 2.79E+Ol u WD LTW 405181025 8/31/2016 La-140 4.08E+OO l.56E+OO 5.31E+OO u WD LTW 405181025 8/31/2016 Mn-54 6.77E-01 7.78E-01 2.73E+OO u WD LTW 405181025 8/31/2016 Nb-95 -2.66E-01 8.17E-01 2.22E+OO u WD LTW 405181025 8/31/2016 Ru-103 5.57E-01 8.66E-01 2.65E+OO u WD LTW 405181025 8/31/2016 Ru-106 -6.95E-01 7.32E+OO 2.35E+Ol u WD LTW 405181025 8/31/2016 Sb-124 -1.43E+OO 2.13E+OO 6.24E+OO u WD LTW 405181025 8/31/2016 Sb-125 7.39E-01 2.00E+OO 6.75E+OO u WD LTW 405181025 8/31/2016 Se-75 7.75E-01 9.38E-01 3.24E+OO u WD LTW 405181025 8/31/2016 Th-228 l.52E+OO 2.29E+OO 5.66E+OO u WD LTW 405181025 8/31/2016 Zn-65 -4.24E-02 l.48E+OO 4.92E+OO u WD LTW 405181025 8/31/2016 Zr-95 -l.53E+OO l.56E+OO 4.44E+OO U WD LTW 405181026 8/31/2016 I-131 -1.76E-01 2.08E-01 6.92E-01 u D-92 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. I'.YIDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 406075023 9/14/2016 Ac-228 8.83E-01 6.27E+OO 2.llE+Ol u WD STJ 406075023 9/14/2016 Ag-108m l.59E-01 1.1 lE+OO 3.71E+OO u WD STJ 406075023 9/14/2016 Ag-llOm -4.75E-Ol 2.07E+OO 6.49E+OO u WD STJ 406075023 9/1.4/2:016 Ba-140 2.78E+OO 6.84E+OO 2.31E+Ol u WD STJ 406075023 9/14/2016 Be-7 -6.47E+OO l.17E+Ol 3.66E+Ol u WD STJ 406075023 9/14/2016 BETA l.lOE+OO l.OlE+OO 3.07E+OO u WD STJ 406075023 9/14/2016 Ce-141 l.15E+OO 2.43E+OO 8.42E+OO u WD STJ 406075023 9/14/2016 Ce-144 -2.54E+OO 9.97E+OO 3.24E+Ol u WD STJ 406075023 9/14/2016 Co-57 l.53E-Ol 1.23E+OO 4.23E+OO u WD STJ 406075023 9/14/2016 Co-58 9.55E-Ol l.35E+OO 4.25E+OO u WD STJ 406075023 9/14/2016 Co-60 l.79E+OO 1.53E+OO 5.61E+OO u WD STJ 406075023 9/14/2016 Cr-51 1.15E+Ol 1.19E+Ol 4.12E+Ol u WD STJ 406075023 9/14/2016 Cs-134 -2.25E-Ol 1.54E+OO 4.89E+OO u WD STJ 406075023 9/14/2016 Cs-137 -5.26E-Ol l.llE+OO 3.39E+OO u WD STJ 406075023 9/14/2016 Fe-59 -4.78E+OO 2.91E+OO 6.24E+OO u WD STJ 406075023 9/14/2016 I-131 1.07E+OO 2.40E+OO 7.42E+OO u WD STJ 406075023 9/14/2016 K-40 -3.66E+Ol l.87E+Ol 4.85E+Ol u WD STJ 406075023 9/14/2016 La-140 -1.18E+OO 2.40E+OO 7.49E+OO u WD STJ 406075023 9/14/2016 Mn-54 1.95E+OO l.39E+OO 3.31E+OO u WD STJ 406075023 9/14/2016 Nb-95 3.97E-01 l.52E+OO 5.02E+OO u WD STJ 406075023 9/14/2016 Ru-103 -3.15E+OO l.64E+OO 4.02E+OO u WD STJ 406075023 9/14/2016 Ru-106 5.06E+OO l.lOE+Ol 3.74E+Ol u WD STJ 406075023 9/14/2016 Sb-124 3.26E+OO 4.26E+OO l.52E+Ol u WD STJ 406075023 9/14/2016 Sb-125 2.28E+OO 3.88E+OO l.21E+Ol u WD STJ 406075023 9/14/2016 Se-75 3.37E-02 1.81E+OO 6.1 lE+OO u WD STJ 406075023 9/14/2016 Th-228 2.51E-01 4.49E+OO 8.45E+OO u WD STJ 406075023 9/14/2016 Zn-65 -5.89E+OO 3.63E+OO 6.25E+OO u WD STJ 406075023 9/14/2016 Zr-95 -5.57E-01 2.49E+OO 7.17E+OO u WD STJ 406075024 9/14/2016 I-131 l.33E-01 2.52E-01 7.95E-01 u WD LTW 406075025 9/14/2016 Ac-228 l.45E+Ol 7.15E+OO l.85E+Ol u WD LTW 406075025 9/14/2016 Ag-108m -2.02E+OO l.20E+OO 3.02E+OO u WD LTW 406075025 9/14/2016 Ag-llOm 8.30E-Ol l.86E+OO 6.24E+OO u WD LTW 406075025 9/14/2016 Ba-140 -8.89E+OO 6.58E+OO 1.72E+Ol u WD LTW 406075025 9/14/2016 Be-7 -4.67E+OO 1.15E+Ol 3.55E+Ol u WD LTW 406075025 9/14/2016 BETA l.05E+OO l.OlE+OO 3.16E+OO u WD LTW 406075025 9/14/2016 Ce-141 -2.87E+OO 2.41E+OO 7.27E+OO u WD LTW 406075025 9/14/2016 Ce-144 -3.76E+OO 8.86E+OO 2.87E+Ol u WD LTW 406075025 9/14/2016 Co-57 1.03E+OO l.18E+OO 3.97E+OO u WD LTW 406075025 9/14/2016 Co-58 1.09E+OO l.35E+OO 4.75E+OO u WD LTW 406075025 9/14/2016 Co-60 9.23E-Ol l.49E+OO 5.17E+OO u WD LTW 406075025 9/14/2016 Cr-51 -1.0lE+Ol l.26E+Ol 3.81E+Ol u WD LTW 406075025 9/14/2016 Cs-134 6.SOE-01 l.27E+OO 4.45E+OO u WD LTW 406075025 9/14/2016 Cs-137 -5.26E-Ol l.35E+OO 4.45E+OO u WD LTW 406075025 9/14/2016 Fe-59 -9.94E-Ol 2.30E+OO 7.22E+OO u WD LTW 406075025 9/14/2016 I-131 -l.43E+OO 2.25E+OO 6.86E+OO u WD LTW 406075025 9/14/2016 K-40 -3.07E+Ol l.91E+Ol 4.98E+Ol u WD LTW 406075025 9/14/2016 La-140 4.07E+OO 2.60E+OO 9.29E+OO u WD LTW 406075025 9/14/2016 Mn-54 5.09E-01 l.31E+OO 4.51E+OO u WD LTW 406075025 9/14/2016 Nb-95 -2.40E+OO l.90E+OO 4.58E+OO u WD LTW 406075025 9/14/2016 Ru-103 4.07E-Ol l.25E+OO 4.09E+OO u D-93 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 406075025 9/14/2016 Ru-106 -l.69E+Ol l.45E+Ol 3.88E+Ol u WD LTW 406075025 9/14/2016 Sb-124 -2.97E-01 3.23E+OO l.04E+Ol u WD LTW 406075025 9/14/2016 Sb-125 -9.49E-01 3.69E+OO l.16E+Ol u WD LTW 406075025 9/14/2016 Se-75 -l.41E+OO l.88E+OO 5.81E+OO u WD LTW 406075025 9/14/2016 Th-228 3.81E+OO 3.39E+OO 9.18E+OO u WD LTW 406075025 9/14/2016 Zn-65 -2.02E+OO 2.22E+OO 5.07E+OO u WD LTW 406075025 9/14/2016 Zr-95 -2.16E+OO 2.25E+OO 6.78E+OO u WD LTW 406075026 9/14/2016 1-131 5.71E-Ol 2.90E-01 8.20E-01 u WD STJ 407112023 9/28/2016 Ac-228 5.14E+OO 3.73E+OO 6.67E+OO u WD STJ 407112023 9/28/2016 Ag-108m 3.29E-01 4.08E-01 l.36E+OO u WD STJ 407112023 9/28/2016 Ag-llOm 3.02E-01 5.44E-Ol l.87E+OO u WD STJ 407112023 9/28/2016 Ba-140 1.39E+OO 3.32E+OO l.09E+Ol u WD STJ 407112023 9/28/2016 Be-7 2.0lE+OO 4.16E+OO 1.38E+Ol u WD STJ 407112023 9/28/2016 BETA 2.08E+OO 8.97E-01 2.33E+OO u WD STJ 407112023 9/28/2016 Ce-141 -3.06E+OO l.69E+OO 3.13E+OO u WD STJ 407112023 9/28/2016 Ce-144 -5.71E+OO 3.44E+OO 9.86E+OO u WD STJ 407112023 9/28/2016 Co-57 6.87E-01 4.33E-01 l.34E+OO u WD STJ 407112023 9/28/2016 Co-58 5.39E-02 4.0lE-01 1.37E+OO u WD STJ 407112023 9/28/2016 Co-60 4.36E-01 4.76E-01 l.60E+OO u WD STJ 407112023 9/28/2016 Cr-51 2.82E+OO 4.63E+OO l.57E+Ol u WD STJ 407112023 9/28/2016 Cs-134 3.46E-01 5.03E-01 l.62E+OO u WD STJ 407112023 9/28/2016 Cs-137 6.12E-01 5.03E-01 l.63E+OO u WD STJ 407112023 9/28/2016 Fe-59 -1.25E+OO 9.62E-01 2.84E+OO u WD STJ 407112023 9/28/2016 I-131 -8.67E-01 l.39E+OO 4.55E+OO u WD STJ 407112023 9/28/2016 K-40 3.12E+OO 1.15E+Ol l.29E+Ol u WD STJ 407112023 9/28/2016 La-140 -l.45E+OO l.16E+OO 3.27E+OO u WD STJ 407112023 9/28/2016 Mn-54 -l.44E-01 4.07E-01 1.36E+OO u WD STJ 407112023 9/28/2016 Nb-95 5.05E-01 4.96E-01 l.60E+OO u WD STJ 407112023 9/28/2016 Ru-103 5.64E-01 5.73E-01 l.71E+OO u WD STJ 407112023 9/28/2016 Ru-106 -3.29E+OO 3.92E+OO l.20E+Ol u WD STJ 407112023 9/28/2016 Sb-124 l.71E+OO 1.20E+OO 3.99E+OO u WD STJ 407112023 9/28/2016 Sb-125 l.76E-01 1.26E+OO 4.20E+OO u WD STJ 407112023 9/28/2016 Se-75 -7.00E-01 6.18E-01 l.99E+OO u WD STJ 407112023 9/28/2016 Th-228 3.69E+OO l.98E+OO 3.45E+OO UI WD STJ 407112023 9/28/2016 Zn-65 -2.55E-01 8.02E-01 2.61E+OO u WD STJ 407112023 9/28/2016 Zr-95 -7.04E-01 8.53E-01 2.56E+OO u WD STJ 407112024 9/28/2016 1-131 -2.51E-01 2.36E-01 8.28E-01 u WD LTW 407112025 9/28/2016 Ac-228 -l.21E+Ol 3.97E+OO 5.84E+OO u WD LTW 407112025 9/28/2016 Ag-108m -4.84E-01 4.55E-01 l.42E+OO u WD LTW 407112025 9/28/2016 Ag-llOm -7.3 lE-01 6.87E-01 2.16E+OO u WD LTW 407112025 9/28/2016 Ba-140 -9.88E-Ol 3.43E+OO l.llE+Ol u WD LTW 407112025 9/28/2016 Be-7 l.79E+OO 4.47E+OO 1.50E+Ol u WD LTW 407112025 9/28/2016 BETA 4.51E-01 7.17E-01 2.16E+OO u WD LTW 407112025 9/28/2016 Ce-141 -4.85E-Ol l.09E+OO 3.18E+OO u WD LTW 407112025 9/28/2016 Ce-144 -5.25E-01 3.31E+OO l.07E+Ol u WD LTW 407112025 9/28/2016 Co-57 -3.15E-Ol 5.28E-01 l.68E+OO u WD LTW 407112025 9/28/2016 Co-58 9.59E-01 5.62E-01 l.79E+OO u WD LTW 407112025 9/28/2016 Co-60 4.92E-01 5.29E-01 l.79E+OO u WD LTW 407112025 9/28/2016 Cr-51 -4.17E+OO 5.02E+OO . l.64E+Ol U WD LTW 407112025 9/28/2016 Cs-134 4.08E-02 5.90E-01 l.68E+OO U D-94 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 407112025 9/28/2016 Cs-137 -6.88E-01 5.32E-Ol l.55E+OO u WD LTW 407112025 9/28/2016 Fe-59 2.24E-Ol l.20E+OO 3.56E+OO u WD LTW 407112025 9/28/2016 I-131 8.45E-01 l.49E+OO 5.06E+OO u WD LTW 407112025 9/28/2016 K-40 -3.66E+Ol l.24E+Ol I.66E+Ol u WD LTW 407112025 9/28/2016 La-140 7.86E-Ol l.15E+OO 3.84E+OO u WD LTW 407112025 9/28/2016 Mn-54 -2.09E-01 5.56E-01 l.73E+OO u WD LTW 407112025 9/28/2016 Nb-95 l.76E-02 5.37E-Ol 1.72E+OO u WD LTW 407112025 9/28/2016 Ru-103 1.58E+OO l.08E+OO 1.94E+OO u WD LTW 407112025 9/28/2016 Ru-106 4.15E-01 4.47E+OO l.46E+Ol u WD LTW 407112025 9/28/2016 Sb-124 -3.63E-01 l.36E+OO 4.28E+OO u WD LTW 407112025 9/28/2016 Sb-125 -6.32E-01 l.31E+OO 4.30E+OO u WD LTW 407112025 9/28/2016 Se-75 -8.85E-01 9.50E-Ol 2.llE+OO u WD LTW 407112025 9/28/2016 Th-228 4.0lE+OO 2.41E+OO 3.49E+OO Ul WD LTW 407112025 9/28/2016 Zn-65 l.40E+OO l.17E+OO 3.96E+OO u WD LTW 407112025 9/28/2016 Zr-95 5.00E-01 l.02E+OO 2.98E+OO u WD LTW 407112026 9/28/2016 I-131 -2.03E-01 2.23E-Ol 7.83E-Ol u WD STJ 408223023 10/12/2016 Ac-228 -2.95E+OO 3.05E+OO 5.70E+OO u WD STJ 408223023 10/12/2016 Ag-108m l.68E-01 3.51E-Ol 1.18E+OO u \VD STJ 408223023 10/12/2016 Ag-llOm 2.34E-Ol 5.24E-Ol 1.69E+OO u WD STJ 408223023 10/12/2016 Ba-140 -5.26E-01 l.99E+OO 6.48E+OO u WD STJ 408223023 10/12/2016 Be-7 5.77E+OO 3.82E+OO 1.24E+Ol u WD STJ 408223023 10/12/2016 BETA 5.42E-01 7.47E-01 2.36E+OO u WD STJ 408223023 10/12/2016 Ce-141 -9.70E-02 6.88E-Ol 2.18E+OO u WD STJ 408223023 10/12/2016 Ce-144 4.14E+OO 2.94E+OO 9.lOE+OO u WD STJ 408223023 10112/2016 Co-57 -2.89E-02 3.51E-Ol 1.12E+OO u WD STJ 408223023 10/12/2016 Co-58 -3.81E-01 4.25E-Ol 1.28E+OO u WD STJ 408223023 10/12/2016 Co-60 -6.29E-Ol 8.08E-Ol 1.44E+OO u WD STJ 408223023 10/12/2016 Cr-51 1.39E+OO 3.67E+OO 1.25E+Ol u WD STJ 408223023 10/12/2016 Cs-134 7.99E-Ol 5.02E-Ol 1.60E+OO u WD STJ 408223023 10/12/2016 Cs-137 1.18E-Ol 4.33E-Ol 1.42E+OO u WD STJ 408223023 10/12/2016 Fe-59 -1.04E+OO 7.97E-01 2.41E+OO u WD STJ 408223023 10/12/2016 1-131 -2.14E+OO l.13E+OO 2.40E+OO u WD STJ 408223023 10/12/2016 K-40 7.58E+OO 9.88E+OO l.31E+Ol u WD STJ 408223023 10/12/2016 La-140 -7.59E-Ol 6.67E-01 l.96E+OO u WD STJ 408223023 10/12/2016 Mn-54 l.33E-01 3.78E-01 1.22E+OO u WD STJ 408223023 10/12/2016 Nb-95 1.89E-01 4.34E-Ol 1.41E+OO u WD STJ 408223023 10/12/2016 Ru-103 -1.87E-Ol 4.37E-Ol 1.42E+OO u WD STJ 408223023 10/12/2016 Ru-106 7.65E-Ol 3.78E+OO 1.24E+Ol u WD STJ 408223023 10112/2016 Sb-124 4.0lE-01 8.85E-Ol 2.96E+OO u WD STJ 408223023 10/12/2016 Sb-125 -7.02E-Ol 1.06E+OO 3.43E+OO u WD STJ 408223023 10/12/2016 Se-75 -5.29E-01 7.86E-Ol 1.82E+OO u WD STJ 408223023 10/12/2016 Th-228 5.36E-Ol 1.65E+OO 2.85E+OO u WD STJ 408223023 10/12/2016 Zn-65 -7.68E-Ol 7.58E-Ol 2.36E+OO u WD STJ 408223023 10/12/2016 Zr-95 7.38E-01 7.73E-Ol 2.52E+OO u WD STJ 408223024 10/12/2016 1-131 3.72E-Ol 2.64E-Ol 7.82E-01 u WD LTW 408223025 10/12/2016 Ac-228 1.89E+OO 3.55E+OO 6.40E+OO u WD LTW 408223025 10/12/2016 Ag-108m -2.67E-01 3.73E-01 1.19E+OO u WD LTW 408223025 10/12/2016 Ag-110m 6.36E-01 6.IOE-01 l.86E+OO u WD LTW 408223025 10/12/2016 Ba-140 -2.56E+OO 2.23E+OO 6.77E+OO u WD LTW 408223025 10/12/2016 Be-7 6.lOE+OO 3.92E+OO l.26E+Ol u 0-95 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 408223025*

10/12/2016 BETA 2.73E+OO l.14E+OO 3.07E+OO u WD LTW 408223025 10/12/2016 Ce-141 -2.18E+OO 9.lOE-01 2.29E+OO u WD LTW 408223025 10/12/2016 Ce-144 -6.36E-01 2.81E+OO 8.92E+OO u WD LTW 408223025 10/12/2016 Co-57 -2.74E-01 3.68E-01 l.15E+OO u WD LTW 408223025 10/12/2016 Co-58 6.74E-02 4.0lE-01 l.37E+OO u WD LTW 408223025 10/12/2016 Co-60 -6.58E-01 7.96E-01 l.60E+OO u WD LTW 408223025 10/12/2016 Cr-51 3.25E+OO 3.99E+OO l.34E+Ol u WD LTW 408223025 10/12/2016 Cs-134 9.33E-01 5.16E-01 l.60E+OO u WD LTW 408223025 10/12/2016 Cs-137 l.54E-01 4.55E-01 l.48E+OO u WD LTW 408223025 10/12/2016 Fe-59 -5.59E-Ol 8.55E-01 2.74E+OO u WD LTW 408223025 10/12/2016 I-131 7.0IE-01 7.52E-01 2.51E+OO u WD LTW 408223025 10/12/2016 K-40 6.32E+OO 1.llE+Ol l.40E+Ol u WD LTW . 408223025 10/12/2016 La-140 -l.74E+OO 8.52E-01 2.12E+OO u WD LTW 408223025 10/12/2016 Mn-54 6.57E-Ol 4.19E-Ol l.40E+OO U WD LTW 408223025 10/12/2016 Nb-95 -3.19E-02 4.64E-01 l.47E+OO U WD LTW 408223025 10/12/2016 Ru-103 -l.33E+OO 5.47E-01 l.36E+OO U WD LTW 408223025 10/12/2016 Ru-106 3.92E+OO 3.84E+OO l.25E+Ol U WD LTW 408223025 10/12/2016 Sb-124 -4.69E-01 9.60E-01 2.96E+OO U WD LTW 408223025 10/12/2016 Sb-125 -l.91E+OO l.37E+OO 3.66E+OO U WD LTW 408223025 10/12/2016 Se-75 5.12E-01 5.46E-Ol l.85E+OO U WD LTW 408223025 10/12/2016 Tb-228 8.97E-01 l.67E+OO 3.03E+OO U WD LTW 408223025 10/12/2016 Zn-65 -2.61E-Ol 8.38E-Ol 2.74E+OO U WD LTW 408223025 10/12/2016 Zr-95 -4.88E-02 7.17E-01 2.27E+OO U WD LTW 408223026 10/12/2016 I-131 l.51E-01 2.43E-01 7.60E-01 u WD STJ 409381023 10/26/2016 Ac-228 l.59E+OO 5.96E+OO l.15E+Ol U WD STJ 409381023 10/26/2016 Ag-108m -l.27E-01 l.lOE+OO 3.50E+OO U WD STJ 409381023 10/26/2016 Ag-llOm -l.12E+OO l.89E+OO 5.86E+OO U WD STJ 409381023 10/26/2016 Ba-140 -l.38E-01 7.12E+OO 2.27E+Ol U WD STJ 409381023 10/26/2016 Be-7 -6.54E+OO l.13E+Ol 3.39E+Ol U WD STJ 409381023 10/26/2016 BETA 2.32E-01 1.14E+OO 3.72E+OO U WD STJ 409381023 10/26/2016 Ce-141 3.75E+OO 3.77E+OO 6.82E+OO U WD STJ 409381023 10/26/2016 Ce-144 l.21E+Ol 7.72E+OO 2.61E+Ol U WD STJ 409381023 10/26/2016 Co-57 l.22E+OO l.13E+OO 3.86E+OO U WD STJ 409381023 10/26/2016 Co-58 l.92E+OO l.41E+OO 5.08E+OO U WD STJ . 409381023 10/26/2016 Co-60 -9.53E-01 1.35E+OO 3.80E+OO U WD STJ 409381023 10/26/2016 Cr-51 -2.71E+OO l.30E+Ol 4.22E+Ol U WD STJ 409381023 10/26/2016 Cs-134 4.77E-Ol l.17E+OO 4.lOE+OO U WD STJ 409381023 10/26/2016 Cs-137 l.06E-Ol l.46E+OO 4.97E+OO U WD STJ 409381023 10/26/2016 Fe-59 -l.87E+OO 2.94E+OO 8.79E+OO U WD STJ 409381023 10/26/2016 I-131 -3.32E+OO 2.44E+OO 6.68E+OO U WD STJ 409381023 10/26/2016 K-40 -4.6IE+OO 2.0IE+Ol 6.82E+Ol U WD STJ 409381023 10/26/2016 La-140 2.lOE+OO 2.12E+OO 7.87E+OO u WD STJ 409381023 10/26/2016 Mn-54 -l.05E+OO 1.21E+OO 3.56E+OO u WD STJ 409381023 10/26/2016 Nb-95 l.67E+OO 1.53E+OO 3.51E+OO u WD STJ 409381023 10/26/2016 Ru-103 3.97E-Ol l.31E+OO 4.32E+OO u WD STJ 409381023 10/26/2016 Ru-106 l.79E+Ol l.33E+Ol 4.52E+Ol u WD STJ 409381023 10/26/2016 Sb-124 -4.22E-02 2.93E+OO 9.89E+OO u WD STJ 409381023 10/26/2016 Sb-125 2.46E+OO 3.65E+OO l.23E+Ol u WD STJ 409381023 10/26/2016 Se-75 2.06E+OO l.83E+OO 6.19E+OO u WD STJ 409381023 10/26/2016 Tb-228 -2.03E+OO 2.65E+OO 8.40E+OO u D-96 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 409381023 10/26/2016 Zn-65 -l.61E+OO 2.68E+OO 7.97E+OO u WD STJ 409381023 10/26/2016 Zr-95 8.92E-01 2.33E+OO 8.lOE+OO u WD STJ 409381024 10/26/2016 I-131 -2.40E-01 1.45E-01 4.95E-01 u WD LTW 409381025 10/26/2016 Ac-228 3.70E+OO 4.79E+OO 1.69E+Ol u WD LTW 409381025 10/26/2016 Ag-108111 4.59E-01 1.04E+OO 3.55E+OO u WD LTW 409381025 10/26/2016 Ag-110111

-8.59E-01 1.50E+OO 4.70E+OO u WD LTW 409381025 10/26/2016 Ba-140 -1.08E+OO 5.74E+OO l.85E+Ol u WD LTW 409381025 10/26/2016 Be-7 5.79E+OO l.09E+Ol 3.71E+Ol u WD LTW 409381025 10/26/2016 BETA 3.17E+OO l.21E+OO 3.37E+OO u WD LTW 409381025 10/26/2016 Ce-141 7.26E-01 l.66E+OO 5.57E+OO u WD LTW 409381025 10/26/2016 Ce-144 8.41E-01 5.91E+OO l.98E+Ol u WD LTW 409381025 10/26/2016 Co-57 -7.87E-01 8.13E-01 2.54E+OO u WD LTW 409381025 10/26/2016 Co-58 -2.12E+OO l.41E+OO 3.83E+OO u WD LTW 409381025 10/26/2016 Co-60 -l.77E+OO l.12E+OO 2.19E+OO u WD LTW 409381025 10/26/2016 Cr-51 l.06E+OO l.OlE+Ol 3.48E+Ol u WD LTW 409381025 10/26/2016 Cs-134 -l.87E+OO l.33E+OO 3.66E+OO u WD LTW 409381025 10/26/2016 Cs-137 -l.88E+OO l.16E+OO 2.71E+OO u WD LTW 409381025 10/26/2016 Fe-59 3.98E-02 2.23E+OO 7.36E+OO u WD LTW 409381025 10/26/2016 I-131 7.51E-01 2.05E+OO 7.08E+OO u WD LTW 409381025 10/26/2016 K-40 -3.lOE+Ol l.89E+Ol 5.48E+Ol u WD LTW 409381025 10/26/2016 La-140 l.94E-01 2.77E+OO 8.96E+OO u WD LTW 409381025 10/26/2016 Mn-54 -2.93E-01 l.09E+OO 3.58E+OO u WD LTW 409381025 10/26/2016 Nb-95 -8.50E-01 l.35E+OO 3.97E+OO u WD LTW 409381025 10/26/2016 Ru-103 -l.78E+OO 1.50E+OO 3.72E+OO u WD LTW 409381025 10/26/2016 Ru-106 -6.14E+OO l.02E+Ol 3.06E+Ol u WD LTW 409381025 10/26/2016 Sb-124 -l.51E+OO 3.35E+OO l.04E+Ol u WD LTW 409381025 10/26/2016 Sb-125 -4.63E+OO 3.53E+OO l.03E+Ol u WD LTW 409381025 10/26/2016 Se-75 2.20E+OO l.52E+OO 4.95E+OO u WD LTW 409381025 10/26/2016 Th-228 2.05E+OO 3.08E+OO 7.54E+OO u WD LTW 409381025 10/26/2016 Zn-65 -l.14E+OO 2.43E+OO 7.49E+OO u WD LTW 409381025 10/26/2016 Zr-95 -l.51E+OO 2.07E+OO 5.88E+OO u WD LTW 409381026 10/26/2016 I-131 -8.93E-02 l.21E-01 4.07E-01 u WD STJ 410456023 11/9/2016 Ac-228 -9.32E+OO 6.23E+OO l.56E+Ol u WD STJ 410456023 11/9/2016 Ag-108111 4.38E-Ol l.37E+OO 4.33E+OO u WD STJ 410456023 11/9/2016 Ag-110111 3.58E+OO l.90E+OO 6.74E+OO u WD STJ 410456023 11/9/2016 Ba-140 1.13E+OO 7.54E+OO 2.50E+Ol u WD STJ 410456023 11/9/2016 Be-7 -6.17E+OO 1.16E+Ol 3.65E+Ol u WD STJ 410456023 11/9/2016 BETA 2.09E+OO 9.74E-01 2.62E+OO u WD STJ 410456023 11/9/2016 Ce-141 -2.48E+OO 2.49E+OO 7.98E+OO u WD STJ 410456023 11/9/2016 Ce-144 7.24E+OO 9.82E+OO 3.llE+Ol u WD STJ 410456023 11/9/2016 Co-57 9.06E-01 l.17E+OO 4.08E+OO u WD STJ 410456023 11/9/2016 Co-58 2.30E-02 l.35E+OO 4.36E+OO u WD STJ 410456023 11/9/2016 Co-60 -1.52E-01 9.lOE-01 2.98E+OO u WD STJ 410456023 11/9/2016 Cr-51 -6.24E-01 l.31E+Ol 4.37E+Ol u WD STJ 410456023 11/9/2016 Cs-134 -I.74E+OO l.57E+OO 4.29E+OO u WD STJ 410456023 11/9/2016 Cs-137 7.42E-01 l.40E+OO 4.76E+OO u WD STJ 410456023 11/9/2016 Fe-59 1.19E+OO 2.37E+OO 8.0IE+OO u WD STJ 410456023 11/9/2016 I-131 -6.37E-01 2.23E+OO 7.28E+OO u WD STJ 410456023 11/9/2016 K-40 -l.24E+OO I.90E+Ol 6.36E+Ol u WD STJ 410456023 11/9/2016 La-140 -4.14E-02 2.38E+OO 7.95E+OO u D-97 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 410456023 11/9/2016 Mn-54 -5.58E-02 l.34E+OO 4.31E+OO u WD STJ 410456023 11/9/2016 Nb-95 l.llE+OO l.36E+OO 4.69E+OO u WD STJ 410456023 11/9/2016 Ru-103 -l.97E+OO l.44E+OO 3.93E+OO u WD STJ 410456023 11/9/2016 Ru-106 -2.97E+OO l.23E+Ol 3.91E+Ol u WD STJ 410456023 11/9/2016 Sb-124 -3.65E+OO 3.16E+OO 8.05E+OO u WD STJ 410456023 11/9/2016 Sb-125 -1.llE+OO 3.53E+OO l.14E+Ol u WD STJ 410456023 11/9/2016 Se-75 -l.45E+OO l.91E+OO 6.12E+OO u WD STJ 410456023 11/9/2016 Th-228 l.47E+OO 3.90E+OO 9.66E+OO u WD STJ 410456023 11/9/2016 Zn-65 2.06E-01 2.47E+OO 7.94E+OO u WD STJ 410456023 11/9/2016 Zr-95 -4.66E-01 2.29E+OO 7.24E+OO u WD STJ 410456024 11/9/2016 I-131 l.12E-01 2.63E-01 8.35E-01 u WD LTW 410456025 11/9/2016 Ac-228 -3.39E+OO 4.59E+OO l.50E+Ol u WD LTW 410456025 11/9/2016 Ag-108m 3.85E-01 l.09E+OO 3.68E+OO u WD* LTW 410456025 11/9/2016 Ag-llOm l.52E-01 l.39E+OO 4.77E+OO u WD LTW 410456025 11/9/2016 Ba-140 4.llE+OO 6.07E+OO 2.07E+Ol u WD LTW 410456025 11/9/2016 Be-7 l.48E+Ol l.07E+Ol 3.46E+Ol u WD LTW 410456025 1119/2016 BETA 4.19E-03 8.96E-Ol 2.90E+OO u WD LTW 410456025 11/9/2016 Ce-141 2.85E+OO 2.03E+OO 6.57E+OO u WD LTW 410456025 11/9/2016 Ce-144 7.41E+OO 7.16E+OO 2.34E+Ol u WD LTW 410456025 11/9/2016 Co-57 -3.51E-01 9.65E-01 3.03E+OO u WD LTW 410456025 11/9/2016 Co-58 -3.50E-Ol l.09E+OO 3.IOE+OO u WD LTW 410456025 11/9/2016 Co-60 -8.lOE-01 l.24E+OO 3.65E+OO u WD LTW 410456025 11/9/2016 Cr-51 -8.llE-01 l.07E+Ol 3.60E+Ol u WD LTW 410456025 11/9/2016 Cs-134 7.68E-01 l.38E+OO 4.59E+OO u WD LTW 410456025 11/9/2016 Cs-137 7.73E-01 l.31E+OO 4.38E+OO u WD LTW 410456025 11/9/2016 Fe-59 -6.30E-01 2.llE+OO 6.75E+OO u WD LTW 410456025 11/9/2016 I-131 l.30E+OO l.88E+OO 6.53E+OO u WD LTW 410456025 11/9/2016 K-40 l.88E+Ol 2.60E+Ol 3.29E+Ol u WD LTW 410456025 11/9/2016 La-140 1.12E+OO l.91E+OO 6.69E+OO u WD LTW 410456025 11/9/2016 Mn-54 l.45E+OO l.19E+OO 4.27E+OO u WD LTW 410456025.

11/9/2016 . Nb-95 2.56E-01 l.47E+OO 4.24E+OO u WD LTW 410456025 11/9/2016 Ru-103 -2.IOE-01 l.19E+OO 3.86E+OO u WD LTW 410456025 11/9/2016 Ru-106 -2.08E+OO 9.89E+OO 3.13E+Ol u WD LTW 410456025 11/9/2016 Sb-124 3.llE-01 2.95E+OO 9.65E+OO u WD LTW 410456025 11/9/2016 Sb-125 -3.76E+OO 2.97E+OO 8.41E+OO u WD LTW 410456025 11/9/2016 Se-75 -9.76E-01 l.47E+OO 4.78E+OO u WD LTW 410456025 11/9/2016 Th-228 l.87E+OO 3.76E+OO 7.17E+OO u WD LTW 410456025 11/9/2016 Zn-65 2.75E+OO 2.05E+OO 7.21E+OO u WD LTW 410456025 11/9/2016 Zr-95 -4.58E+OO 2.65E+OO 5.99E+OO U WD LTW 410456026 11/9/2016 I-131 -7.0IE-02 2.39E-01 8.09E-01 u WD STJ 414248001 12/21/2016 H-3 -5.54E+02 3.95E+02 l.38E+03 U WD LTW 414248002 12/21/2016 H-3 -5.73E+02 3.87E+02 1.36E+03 U WD STJ 411429023 11/23/2016 Ac-228 2.88E+OO 6.95E+OO l.65E+Ol U WD STJ 411429023 11/23/2016 Ag-108m 6.16E-Ol 9.42E-01 3.24E+OO U WD STJ 411429023 11/23/2016 Ag-llOm -l.71E+OO l.72E+OO 5.15E+OO U WD STJ 411429023 11/23/2016 Ba-140 2.lOE+Ol 2.IOE+Ol 2.57E+Ol U WD STJ 411429023 11/23/2016 Be-7 l.15E+Ol l.06E+Ol 3.68E+Ol U WD STJ 411429023 11/23/2016 BETA l.34E+OO 7.43E-01 l.97E+OO U WD STJ 411429023 11/23/2016 Ce-141 -2.12E+OO 2.55E+OO 7.24E+OO U WD STJ 411429023 11/23/2016 Ce-144 l.25E+Ol 8.16E+OO 2.47E+Ol U 0-98 Donald C. Cook Nuclear Plant

Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. 11DC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 411429023 11123/2016 Co-57 -4.47E-Ol l.02E+OO 3.18E+OO u WD STJ 411429023 11123/2016 Co-58 -l.53E+OO l.36E+OO 3.58E+OO u WD STJ 411429023 11/23/2016 Co-60 l.89E+OO l.32E+OO 4.81E+OO u WD STJ 411429023 11/23/2016 Cr-51 6.81E+OO l.20E+Ol 4.13E+Ol u WD STJ 411429023 11123/2016 Cs-134 -2.09E-Ol l.28E+OO 3.99E+OO u WD STJ 411429023 11/23/2016 Cs-137 1.16E+OO l.04E+OO 3.64E+OO u WD STJ 411429023 11123/2016 Fe-59 -l.09E+OO 2.63E+OO 8.31E+OO u WD STJ 411429023 11123/2016 I-131 5.51E+OO 3.56E+OO 1.23E+Ol u WD STJ 411429023 11/23/2016 K-40 -2.17E+Ol l.59E+Ol 4.26E+Ol u WD STJ 411429023 11/23/2016 La-140 6.66E+OO 3.72E+OO 1.33E+Ol u WD STJ 411429023 11123/2016 Mn-54 . l.30E-Ol l.09E+OO 3.75E+OO u WD STJ 411429023 11/23/2016 Nb-95 4.50E-01 1.47E+OO 4.80E+OO u WD STJ 411429023 11/23/2016 Ru-103 6.04E-Ol l.50E+OO 5.03E+OO u WD STJ 411429023 11/23/2016 Ru-106 -l.81E+OO 8.83E+OO 2.79E+Ol u WD STJ 411429023 11/23/2016 Sb-124 l.48E+OO 2.68E+OO 9.39E+OO u WD STJ 411429023 11/23/2016 Sb-125 -4.36E+OO 3.47E+OO l.OOE+Ol u WD STJ 411429023 11/23/2016 Se-75 l.69E-Ol l.37E+OO 4.68E+OO u WD STJ 411429023 11/23/2016 Th-228 4.81E+OO 4.18E+OO 8.48E+OO u WD STJ 411429023 11/23/2016 Zn-65 -5.52E-Ol 2.33E+OO 7.51E+OO u WD STJ 411429023 11/23/2016 Zr-95 l.57E+OO l.75E+OO 6.12E+OO u WD STJ 411429024 11123/2016 I-131 2.45E-Ol 2.69E-Ol 8.31E-Ol u WD LTW 411429025 11123/2016 Ac-228 3.14E+OO 5.50E+OO 1.88E+Ol u WD LTW 411429025 11/23/2016 Ag-108m 3.16E-01 9.00E-01 3.lOE+OO u WD LTW 411429025 11123/2016 Ag-llOm -l.95E+OO I.38E+OO 3.29E+OO u WD LTW 411429025 11/23/2016 Ba-140 -l.06E+Ol 7.37E+OO I.97E+Ol u WD LTW 411429025 11123/2016 Be-7 l.98E+Ol I.OOE+Ol 2.68E+Ol u WD LTW 411429025 11/23/2016 BETA 9.74E-Ol 7.62E-Ol 2.19E+OO u WD LTW 411429025 11123/2016 Ce-141 -3.42E+OO 2.46E+OO 7.13E+OO u WD LTW 411429025 11123/2016 Ce-144 9.62E+OO 7.17E+OO 2.38E+Ol u WD LTW 411429025 11/23/2016 Co-57 3.lOE-01 9.90E-01 3.06E+OO u WD LTW 411429025 11/23/2016 Co-58 -2.80E+OO l.40E+OO 2.99E+OO u WD LTW 411429025 11/23/2016 Co-60 1.80E+OO l.30E+OO 4.70E+OO u WD LTW 411429025 11/23/2016 Cr-51 -l.68E+OO 1.05E+Ol 3.57E+Ot u WD LTW 411429025 11/23/2016 Cs-134 3.07E-Ol 1.21E+OO 4.0lE+OO u WD LTW 411429025 11/23/2016 Cs-137 -l.84E+OO 1.66E+OO 4.82E+OO u WD LTW 411429025 11/23/2016 Fe-59 -8.64E-Ol 1.85E+OO 5.82E+OO u WD LTW 411429025 11/23/2016 I-131 2.49E-Ol 2.72E+OO 9.36E+OO u WD LTW 411429025 11/23/2016 K-40 2.48E+Ol I.35E+Ol O.OOE+OO UI WD LTW 411429025 11/23/2016 La-140 -l.30E+OO 2.34E+OO 6.91E+OO u WD LTW 411429025 11/23/2016 Mn-54 l.61E+OO l.07E+OO 3.76E+OO u WD LTW 411429025 11/23/2016 Nb-95 -1.07E+OO l.39E+OO 3.84E+OO u WD LTW 411429025 11/23/2016 Ru-103 8.75E-Ol 1.26E+OO 4.37E+OO u WD LTW 411429025 11123/2016 Ru-106 l.02E+Ol 8.56E+OO 3.03E+Ol u WD LTW 411429025 11/23/2016 Sb-124 -l.14E+OO 3.27E+OO I.OlE+Ol u WD LTW 411429025 11/23/2016 Sb-125 3.14E+OO 4.24E+OO 1.0lE+Ol u WD LTW 411429025 11/23/2016 Se-75 -7.78E-Ol l.55E+OO 4.70E+OO u WD LTW 411429025 11/23/2016 Th-228 l.08E+OO 3.28E+OO 6.14E+OO u WD LTW 411429025 11123/2016 Zn-65 -3.8IE+OO 2.21E+OO 5.23E+OO u WD LTW 411429025 11/23/2016 Zr-95 -l.87E+OO 2.07E+OO 5.90E+OO u WD LTW 411429026 11/23/2016 I-131 8.87E-Ol 3.14E-01 9.15E-01 u D-99 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD STJ 412404023 1217/2016 Ac-228 3.86E+OO 6.32E+OO 2.1 IE+Ol u WD STJ 412404023 1217/2016 Ag-108m -3.02E-01 l.IOE+OO 3.56E+OO u WD STJ 412404023 1217/2016 Ag-llOm -6.25E-01 1.63E+OO 4.95E+OO u WD STJ 412404023 1217/2016 Ba-140 7.33E+OO 6.70E+OO 2.33E+Ol u WD STJ 412404023 1217/2016 Be-7 5.17E+OO l.33E+Ol 4.28E+Ol*

u WD STJ 412404023 1217/2016 BETA 2.25E-02 8.28E-01 2.71E+OO u WD STJ 412404023 1217/2016 Ce-141 3.23E+OO 3.94E+OO 8.13E+OO u WD STJ 412404023 1217/2016 Ce-144 3.64E+OO 8.96E+OO 3.llE+Ol u WD STJ 412404023 1217/2016 Co-57 7.67E-Ol 1.22E+OO 4.24E+OO u WD STJ 412404023 1217/2016 Co-58 -1.20E+OO l.30E+OO 3.63E+OO u WD STJ 412404023 1217/2016 Co-60 3.26E-01 l.37E+OO 4.76E+OO u WD STJ 412404023 1217/2016 Cr-51 -3.08E+OO 1.14E+Ol 3.76E+Ol u WD STJ 412404023 1217/2016 Cs-134 2.94E+OO I.67E+OO 5.83E+OO u WD STJ 412404023 1217/2016 Cs-137 1.27E+OO 1.38E+OO 4.76E+OO u WD STJ 412404023 1217/2016 Fe-59 2.94E+OO 2.74E+OO 8.99E+OO u WD STJ 412404023 1217/2016 I-131 4.14E+OO 2.51E+OO 8.56E+OO u WD STJ 412404023 1217/2016 K-40 -3.91E+Ol 2.04E+Ol 4.67E+Ol u WD STJ 412404023 1217/2016 La-140 -5.82E-01 2.62E+OO 8.54E+OO u WD STJ 412404023 1217/2016 Mn-54 -6.40E-01 1.46E+OO 4.46E+OO u WD STJ 412404023 1217/2016 Nb-95 3.26E+OO l.29E+OO 4.64E+OO u WD STJ 412404023 1217/2016 Ru-103 -5.17E-01 1.35E+OO 4.30E+OO u VYD STJ 412404023 1217/2016 Ru-106 -6.05E-01 l.13E+Ol 3.66E+Ol u WD STJ 412404023 1217/2016 Sb-124 3.99E+OO 2.57E+OO l.03E+Ol u WD STJ 412404023 1217/2016 Sb-125 9.3IE+OO 4.02E+OO 1.34E+Ol u WD STJ 412404023 1217/2016 Se-75 -l.83E+OO l.85E+OO 5.76E+OO u WD STJ 412404023 1217/2016 Th-228 l.46E+OO 3.46E+OO 9.32E+OO u WD STJ 412404023 1217/2016 Zn-65 9.26E-Ol 1.90E+OO 6.53E+OO u WD STJ 412404023 1217/2016 Zr-95 -2.42E+OO 2.72E+OO 7.86E+OO u WD STJ 412404024 1217/2016 I-131 8.97E-02 2.00E-01 6.36E-Ol .U WD LTW 412404025 1217/2016 Ac-228 2.51E+OO 5.32E+OO l.78E+Ol u WD LTW 412404025 1217/2016 Ag-108m -l.14E+OO 9.96E-01 2.91E+OO u WD LTW 412404025 1217/2016 Ag-llOm l.81E+OO l.60E+OO 5.26E+OO u WD LTW 412404025 1217/2016 Ba-140 l.89E+OO 6.llE+OO 2.07E+Ol u WD LTW 412404025 1217/2016 Be-7 1.75E+Ol 1.06E+Ol 3.71E+Ol u WD LTW 412404025 1217/2016 BETA 2.30E+OO 1.14E+OO 3.23E+OO u WD LTW 412404025 1217/2016 Ce-141 3.66E+OO 2.20E+OO 7.19E+OO u WD LTW 412404025 1217/2016 Ce-144 -8.82E+OO 7.63E+OO 2.24E+Ol u WD LTW 412404025 1217/2016 Co-57 6.96E-Ol 1.00E+OO 3.35E+OO u WD LTW 412404025 1217/2016 Co-58 6.79E-01 l.llE+OO 3.80E+OO u WD LTW 412404025 1217/2016 Co-60 -l.44E+OO l.52E+OO 4.29E+OO u WD LTW 412404025 1217/2016 Cr-51 9.41E+OO l.04E+Ol 3.66E+Ol u WD LTW 412404025 1217/2016 Cs-134 4.44E-01 l.08E+OO 3.64E+OO u WD LTW 412404025 1217/2016 Cs-137 2.15E+OO 1.99E+OO 3.37E+OO u WD LTW 412404025 1217/2016 Fe-59 7.20E-Ol 2.33E+OO 8.lOE+OO u WD LTW 412404025 1217/2016 I-131 6.95E-01 2.02E+OO 6.71E+OO u WD LTW 412404025 1217/2016 K-40 5.89E+OO 1.99E+Ol 6.85E+Ol u WD LTW 412404025 1217/2016 La-140 l.26E+OO l.59E+OO 5.87E+OO u WD LTW 412404025 1217/2016 Mn-54 -3.0IE+OO 1.57E+OO 3.40E+OO u WD LTW 412404025 1217/2016 Nb-95 2.00E+OO l.09E+OO 2.89E+OO u WD LTW 412404025 1217/2016 Ru-103 -8.74E-01 1.37E+OO 4.30E+OO u D-100 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 412404025 1217/2016 Ru-106 -4.67E-01 I.05E+Ol 3.42E+Ol u WD LTW 412404025 1217/2016 Sb-124 -5.34E+OO 3.57E+OO 7.75E+OO u WD LTW 412404025 1217/2016 Sb-125 -2.72E+OO 3.23E+OO 9.98E+OO u WD LTW 412404025 1217/2016 Se-75 5.52E-01 1.42E+OO 4.56E+OO u WD LTW 412404025 1217/2016 Th-228 6.42E+OO 3.93E+OO 7.56E+OO u WD LTW 412404025 1217/2016 Zn-65 -1.23E+OO 2.50E+OO 6.65E+OO u WD LTW 412404025 1217/2016 Zr-95 -4.33E+OO 2.48E+OO 5.64E+OO u WD LTW 412404026 1217/2016 1-131 -2.79E-OI 1.72E-01 6.35E-01 u WD STJ 413336023 12/21/2016 Ac-228 -7.94E-01 4.92E+OO 1.58E+OI u WD STJ 413336023 12/21/2016 Ag-108m 4.90E-Ol 9.35E-OI 3.24E+OO u WD STJ 413336023 12/21/2016 Ag-llOm -l.36E+OO 1.45E+OO 4.00E+OO u WD STJ 413336023 12/21/2016 Ba-140 2.96E+OO 5.76E+OO 1.98E+Ol u WD STJ 413336023 12/21/2016 Be-7 1.05E+OI 9.67E+OO 3.38E+OI u WD STJ 413336023 12/21/2016 BETA -4.66E-OI 1.05E+OO 3.55E+OO u WD STJ 413336023 12/21/2016 Ce-141 -2.39E+OO 2.23E+OO 5.79E+OO u WD STJ 413336023 12121/2016 Ce-144 -3.0IE-01 6.68E+OO 2.19E+OI u WD STJ 413336023 12/21/2016 Co-57 -1.70E+OO 1.07E+OO 2.83E+OO u WD STJ 413336023 12/21/2016 Co-58 -1.00E+OO I.09E+OO 2.54E+OO u WD STJ 413336023 12/21/2016 Co-60 -8.51E-01 8.21E-Ol 2.12E+OO u WD STJ 413336023 12/2112016 Cr-51 -3.03E+OO 9.75E+OO 3.29E+Ol u WD STJ 413336023 12/21/2016 Cs-134 -2.72E-Ol l.34E+OO 4.23E+OO u WD STJ 413336023 12/21/2016 Cs-137 -2.75E-Ol I.46E+OO 4.99E+OO u WD STJ 413336023 12/21/2016 Fe-59 2.51E+OO 1.98E+OO 7.30E+OO u WD STJ 413336023 12/21/2016 1-131 -5.89E-Ol I.96E+OO 6.57E+OO u WD STJ 413336023 12/21/2016 K-40 1.47E+Ol 2.13E+Ol 3.42E+Ol u WD STJ 413336023 12/21/2016 La-140 -1.IOE+OO I.65E+OO 4.74E+OO u WD STJ 413336023 12/21/2016 Mn-54 l.56E+OO 1.16E+OO 3.76E+OO u WD STJ 413336023 12/21/2016 Nb-95 1.42E+OO 1.19E+OO 4.llE+OO u WD STJ 413336023 12/21/2016 Ru-103 -2.17E+OO 1.35E+OO 3.67E+OO u WD STJ 413336023 12/21/2016 Ru-106 2.80E+Ol I.04E+Ol 2.56E+Ol Ul WD STJ 413336023 12/21/2016 Sb-124 l.35E+OO 2.72E+OO 9.43E+OO u WD STJ 413336023 12/21/2016 Sb-125 -2.31E+OO 2.61E+OO 8.05E+OO u WD STJ 413336023 12/21/2016 Se-75 -2.14E+OO l.56E+OO 4.21E+OO u WD STJ 413336023 12/2112016 Th-228 2.08E+OO 3.81E+OO 8.82E+OO u WD STJ 413336023 12/21/2016 Zn-65 -3.22E-OI 2.IOE+OO 6.97E+OO u WD STJ 413336023 12/21/2016 Zr-95 1.45E+OO I.92E+OO 6.59E+OO u WD STJ 413336024 12/21/2016 1-131 1.12E-Ol 2.51E-Ol 7.99E-Ol u WD LTW 413336025 12/21/2016 Ac-228 4.72E+OO 5.47E+OO 1.62E+Ol u WD LTW 413336025 12/21/2016 Ag-108m 6.0lE-01 I.07E+OO 3.63E+OO u WD LTW 413336025 12/21/2016 Ag-llOm -2.0SE+OO l.44E+OO 2.94E+OO u WD LTW 413336025 12/21/2016 Ba-140 1.68E+OI 9.66E+OO 2.04E+Ol u WD LTW 413336025 12/21/2016 Be-7 -9.16E-Ol 9.97E+OO 3.26E+OI u WD LTW 413336025 12/21/2016 BETA 1.96E+OO I.09E+OO 3.llE+OO u WD LTW 413336025 12/21/2016 Ce-141 -6.0lE+OO 2.70E+OO 6.21E+OO u WD LTW 413336025 12/21/2016 Ce-144 8.36E-Ol 7.78E+OO 2.51E+Ol u WD LTW 413336025 12/21/2016 Co-57 9.SOE-01 9.87E-Ol 3.25E+OO u WD LTW 413336025 12121/2016 Co-58 3.49E-01 I.04E+OO 3.62E+OO u WD LTW 413336025 12/21/2016 Co-60 -l.14E+OO 1.12E+OO 3.02E+OO u WD LTW 413336025 12/21/2016 Cr-51 l.75E+Ol l.18E+Ol 4.03E+Ol u WD LTW 413336025 12/21/2016 Cs-134 1.98E+OO I.65E+OO 5.llE+OO u D-101 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WD LTW 413336025 12/21/2016 Cs-137 -6.41E-01 1.06E+OO 3.15E+OO u WD LTW 413336025 12/21/2016 Fe-59 4.87E+OO 2.36E+OO 8.25E+OO u WD LTW 413336025 12/21/2016 I-131 2.62E-01 2.00E+OO 6.78E+OO u WD LTW 413336025 12/21/2016 K-40 l.88E+Ol l.77E+Ol O.OOE+OO UI WD LTW 413336025 12/21/2016 La-140 -2.30E+OO 2.43E+OO 6.69E+OO u WD LTW 413336025 12/21/2016 Mn-54 1.18E+OO l.23E+OO 4.37E+OO u WD LTW 413336025 12/21/2016 Nb-95 1.40E+OO l.33E+OO 4.51E+OO u WD LTW 413336025 12/21/2016 Ru-103 -2.28E+OO l.29E+OO 3.25E+OO u WD LTW 413336025 12/21/2016 Ru-106 -1.81E+OO 9.62E+OO 3.05E+Ol u WD LTW 413336025 12/21/2016 Sb-124 l.97E+OO 2.74E+OO 9.62E+OO u WD LTW 413336025 12/21/2016 Sb-125 -2.46E+OO 3.1 lE+OO 9.59E+OO u WD LTW 413336025 12/21/2016 Se-75 -3.65E-01 1.45E+OO 4.90E+OO u WD LTW 413336025 12/21/2016 Th-228 l.56E+OO 6.09E+OO 8.lOE+OO u WD LTW 413336025 12/21/2016 Zn-65 -6.85E-01 2.38E+OO 6.59E+OO u WD LTW 413336025 12/21/2016 Zr-95 2.05E+OO 2.04E+OO 6.99E+OO u WD LTW 413336026 12/2112016 I-131 4.30E-01 2.76E-01 8.36E-01 u D-102 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-2 388905001 1/6/2016 Ac-228 4.48E+OO 2.89E+OO 6.75E+OO u WG W-2 388905001 1/6/2016 Ag-108m 4.90E-01 4.66E-01 1.54E+OO u WG W-2 388905001 1/6/2016 Ag-llOm 3.93E-01 5.15E-01 l.67E+OO u WG W-2 388905001 1/6/2016 Ba-140 -4.43E+OO 2.88E+OO 8.36E+OO u WG W-2 388905001 116/2016 Be-7 2.72E+OO 4.57E+OO l.52E+Ol u WG W-2 388905001 1/6/2016 Ce-141 -l.22E+OO 9.27E-01 2.88E+OO u WG W-2 388905001 1/6/2016 Ce-144 -l.29E+OO 3.29E+OO l.09E+Ol u WG W-2 388905001 1/6/2016 Co-57 -2.65E-01 4.39E-01 l.45E+OO u WG W-2 388905001 1/6/2016 Co-58 -5.94E-01 6.03E-01 l.62E+OO u WG W-2 388905001 1/6/2016 Co-60 -1.51E+OO 6.33E-01 l.52E+OO u WG W-2 388905001 1/6/2016 Cr-51 5.09E+OO 6.52E+OO l.68E+Ol u WG W-2 388905001 1/6/2016 Cs-134 -3.48E-01 5.16E-01 1.66E+OO u WG W-2 388905001 1/6/2016 Cs-137 -8.90E-01 5.89E-01 l.67E+OO u WG W-2 388905001 1/6/2016 Fe-59 -2.17E+OO l.36E+OO 3.14E+OO u WG W-2 388905001 1/6/2016 H-3 -3.27E+02 4.44E+02 l.51E+03 u WG W-2 388905001 1/6/2016 I-131 -9.16E-01 l.13E+OO 3.06E+OO u WG

W-2 388905001 1/6/2016 K-40 5.08E+OO l.29E+Ol l.71E+Ol u WG W-2 388905001 1/6/2016 La-140 -4.13E-01 l.02E+OO 2.78E+OO u WG W-2 388905001 1/6/2016 Mn-54 -3.84E-01 5.68E-01 l.57E+OO u WG W-2 388905001 116/2016 Nb-95 8.39E-01 5.60E-01 l.85E+OO u WG W-2 388905001 1/6/2016 Ru-103 -4.89E-01 6.25E-01 l.72E+OO u WG W-2 388905001 1/6/2016 Ru-106 4.llE+OO 4.45E+OO l.45E+Ol u WG W-2 388905001 1/6/2016 Sb-124 -5.67E-01 l.44E+OO 4.59E+OO u WG W-2 388905001 1/6/2016 Sb-125 3.23E-03 l.32E+OO 4.40E+OO u WG W-2 388905001 1/6/2016 Se-75 -l.26E+OO 7.74E-01 2.20E+OO u WG W-2 388905001 1/6/2016 Th-228 1.48E+OO l.72E+OO 3.18E+OO u WG W-2 388905001 1/6/2016 Zn-65 -7.68E-01 l.59E+OO 3.30E+OO u WG W-2 388905001 1/6/2016 Zr-95 -l.72E+OO l.09E+OO 2.70E+OO u WG W-3 388905002 1/5/2016 Ac-228 l.48E-01 3.65E+OO 6.35E+OO u WG W-3 388905002 1/5/2016 Ag-108m -5.87E-02 4.68E-01 l.51E+OO u WG W-3 388905002 1/5/2016 Ag-1 lOm -2.0lE+OO 7.37E-Ol l.72E+OO u WG W-3 388905002 1/5/2016 Ba-140 -7.73E+OO 5.08E+OO 8.95E+OO u WG W-3 388905002 1/5/2016 Be-7 -3.70E+OO 4.80E+OO l.49E+Ol u WG W-3 388905002 1/5/2016 Ce-141 -8.17E-01 1.llE+OO 3.07E+OO u WG W-3 388905002 115/2016 Ce-144 l.47E+OO 3.59E+OO 1.16E+Ol u WG W-3 388905002 1/5/2016 Co-57 3.84E-01 4.67E-01 1.50E+,OQ .u. WG W-3 388905002 1/5/2016 Co-58 -9.60E-03 4.73E-01 1.55E+OO u WG W-3 388905002 1/5/2016 Co-60 -l.85E-02 5.29E-Ol 1.75E+OO u WG W-3 388905002 1/5/2016 Cr-51 9.31E-OI 5.26E+OO l.75E+Ol u WG W-3 388905002 1/5/2016 Cs-134 9.76E-01 6.58E-OI l.89E+OO u WG W-3 388905002 1/5/2016 Cs-137 -l.04E+OO 9.82E-01 2.37E+OO u WG W-3 388905002 1/5/2016 Fe-59 l.06E+OO l.05E+OO 3.54E+OO u WG W-3 388905002 1/5/2016 H-3 -l.98E+02 4.57E+02 1.53E+03 u WG W-3 388905002 1/5/2016 I-131 9.50E-Ol l.13E+OO 3.70E+OO u WG W-3 388905002 1/5/2016 K-40 l.49E+Ol l.23E+Ol l.82E+Ol u WG W-3 388905002 1/5/2016 La-140 -3.07E-01 1.1 IE+OO 3.04E+OO u WG W-3 388905002 1/5/2016 Mn-54 -2.0lE-01 4.79E-01 l.54E+OO u WG W-3 388905002 115/2016 Nb-95 l.lOE+OO 5.99E-01 l.89E+OO u WG W-3 388905002 1/5/2016 Ru-103 -4.92E-Ol 5.99E-Ol l.85E+OO u WG W-3 388905002 1/5/2016 Ru-106 l.26E+OO 4.51E+OO l.52E+Ol u D-103 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCiJL) WG W-3 388905002 1/5/2016 Sb-124 -9.28E-Ol 1.59E+OO 4.16E+OO u WG W-3 388905002 1/5/2016 Sb-125 2.llE+OO 1.53E+OO 4.89E+OO u WG W-3 388905002 1/5/2016 Se-75 4.72E-01 7.20E-Ol 2.41E+OO u WG W-3 388905002 1/5/2016 Th-228 6.97E-02 1.63E+OO 3.85E+OO u WG W-3 388905002 1/5/2016 Zn-65 6.63E-01 l.15E+OO 3.89E+OO u WG W-3 388905002 1/5/2016 Zr-95 1.46E+OO 9.46E-01 3.07E+OO u WG W-8 388905003 1/5/2016 Ac-228 1.86E+OO 3.58E+OO 8.72E+OO u WG W-8 388905003 1/5/2016 Ag-108m 9.52E-03 5.45E-OI 1.80E+OO u WG W-8 388905003 1/5/2016 Ag-llOm 2.13E-01 8.83E-OI 1.98E+OO u WG W-8 388905003 1/5/2016 Ba-140 -1.47E+OO 3.34E+OO l.07E+Ol u WG W-8 388905003 1/5/2016 Be-7 7.47E+OO 5.88E+OO l.90E+Ol u WG W-8 388905003 1/5/2016 Ce-141 -3.88E-01 l.33E+OO 3.92E+OO u WG W-8 388905003 1/5/2016 Ce-144 2.73E+OO 4.81E+OO l.49E+Ol u WG W-8 388905003 1/5/2016 Co-57 -5.90E-01 6.23E-01 l.93E+OO u WG W-8 388905003 1/5/2016 Co-58 -4.03E-Ol 6.50E-01 l.72E+OO u WG W-8 388905003 1/5/2016 Co-60 -3.86E-Ol 6.06E-01 l.92E+OO u WG W-8 388905003 1/5/2016 Cr-51 -l.34E+Ol 6.86E+OO l.95E+Ol u WG W-8 388905003 1/5/2016 Cs-134 -1.07E+OO 8.05E-01 2.09E+OO u WG W-8 388905003 1/5/2016 Cs-137 -2.07E+OO 1.0lE+OO 2.09E+OO u WG W-8 388905003 1/5/2016 Fe-59 5.64E+OO 2.59E+OO 4.06E+OO UI WG W-8 388905003 1/5/2016 H-3 -2.05E+02 4.50E+02 1.51E+03 u WG W-8 388905003 1/5/2016 I-131 5.88E-01 1.23E+OO 4.09E+OO u WG W-8 388905003 1/5/2016 K-40 2.78E+Ol 1.55E+Ol 2.12E+Ol UI WG W-8 388905003 1/5/2016 La-140 2.15E+OO l.19E+OO 3.85E+OO u WG W-8 388905003 1/5/2016 Mn-54 6.96E-01 6.02E-01 1.89E+OO u WG W-8 388905003 1/5/2016 Nb-95 8.60E-01 5.26E-01 2.15E+OO u WG W-8 388905003 1/5/2016 Ru-103 3.35E-01 7.03E-01 2.32E+OO u WG W-8 388905003 1/5/2016 Ru-106 -7.73E+OO 7.lOE+OO l.76E+Ol u WG W-8 388905003 1/5/2016 Sb-124 3.91E-01 1.43E+OO 4.70E+OO u WG W-8 388905003 1/5/2016 Sb-125 -2.84E+OO l.83E+OO 5.42E+OO u WG W-8 388905003 1/5/2016 Se-75 l.51E+OO 8.97E-01 2.84E+OO u WG W-8 388905003 1/5/2016 Th-228 -3.26E+OO 2.llE+OO 4.16E+OO u WG W-8 388905003 1/5/2016 Zn-65 l.98E+OO 8.82E-01 3.78E+OO u WG W-8 388905003 1/5/2016 Zr-95 -6.84E-02 L16E+OO 3.73E+OO u WG W-9 388905004 1/6/2016 Ac-228 8.29E+OO 2.98E+OO 7.15E+OO UI WG W-9 388905004 1/6/2016 Ag-108m -3.76E-01 4.71E-01 l.47E+OO u WG W-9 388905004 1/6/2016 Ag-llOm -7.82E-01 5.05E-01 1.49E+OO u WG W-9 388905004 1/6/2016 Ba-140 -3.81E+OO 2.92E+OO 8.51E+OO u WG W-9 388905004 1/6/2016 Be-7 -3.07E-01 4.38E+OO l.41E+Ol u W.G W-9 388905004 1/6/2016 Ce-141 -2.72E+OO 1.51E+OO 3.18E+OO u WG W-9 388905004 1/6/2016 Ce-144 3.30E+OO 3.83E+OO l.23E+Ol u WG W-9 388905004 1/6/2016 Co-57 5.38E-01 5.09E-01 l.63E+OO u WG W-9 388905004 1/6/2016 Co-58 1.47E-01 4.93E-OI l.60E+OO u WG W-9 388905004 1/6/2016 Co-60 1.43E-01 5.05E-01 l.70E+OO u WG W-9 388905004 1/6/2016 Cr-51 3.30E+OO 5.27E+OO 1.75E+Ol u WG W-9 388905004 1/6/2016 Cs-134 7.05E-03 6.42E-OI l.84E+OO u WG W-9 388905004 1/6/2016 Cs-137 3.52E-01 5.05E-01 l.71E+OO u WG W-9 388905004 116/2016 Fe-59 1.43E+OO 1.26E+OO 3.61E+OO u WG W-9 388905004 1/6/2016 H-3 1.63E+02 4.69E+02 l.52E+03 u WG W-9 388905004 1/6/2016 I-131 2.24E-01 LlOE+OO 3.20E+OO u D-104 Donald c. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-9 388905004 1/6/2016 K-40 9.78E-01 1.05E+Ol 2.54E+Ol u WG W-9 388905004 1/6/2016 La-140 1.60E+OO 9.96E-01 3.28E+OO u WG W-9 388905004 1/6/2016 Mn-54 -9.95E-01 5.61E-01 1.56E+OO u WG W-9 388905004 1/6/2016 Nb-95 7.80E-01 5.99E-01 1.75E+OO u WG W-9 388905004 1/6/2016 Ru-103 4.36E-02 6.39E-01 1.80E+OO u WG W-9 388905004 1/6/2016 Ru-106 4.42E+OO 5.26E+OO 1.56E+Ol u WG W-9 388905004 1/6/2016 Sb-124 -2.61E+OO 1.72E+OO 3.88E+OO u WG W-9 388905004 1/6/2016 Sb-125 1.42E+OO 1.47E+OO 4.79E+OO u WG W-9 388905004 1/6/2016 Se-75 -2.79E-01 7.26E-01 2.40E+OO u WG W-9 388905004 1/6/2016 Th-228 -2.84E+OO 1.74E+OO 3.75E+OO u WG W-9 388905004 1/6/2016 Zn-65 -l.21E+OO l.39E+OO 3.56E+OO u WG W-9 388905004 1/6/2016 Zr-95 3.96E-01 9.23E-01 3.09E+OO u WG W-15 388905005 117/2016 Ac-228 -3.53E+OO 3.70E+OO 7.62E+OO u WG W-15 388905005 117/2016 Ag-108m -6.29E-01 5.07E-01 l.53E+OO u WG W-15 388905005 117/2016 Ag-llOm 8.98E-01 5.48E-Ol 1.65E+OO u WG W-15 388905005 117/2016 Ba-140 -1.77E+OO 2.71E+OO 8.40E+OO u WG W-15 388905005 117/2016 Be-7 -3.87E+OO 4.76E+OO l.48E+Ol u WG W-15 388905005 117/2016 Ce-141 l.30E-02 1.66E+OO 2.98E+OO u WG W-15 388905005 117/2016 Ce-144 -1.27E+OO 3.86E+OO 1.25E+Ol u WG W-15 388905005 117/2016 Co-57 -2.09E-01 4.90E-Ol l.58E+OO u WG W-15 388905005 117/2016 Co-58 -4.53E-Ol 5.04E-01 l.56E+OO u WG W-15 388905005 117/2016 Co-60 2.32E-Ol 5.41E-01 1.81E+OO u WG W-15 388905005 117/2016 Cr-51 -8.49E+OO 7.74E+OO 1.72E+Ol u WG W-15 388905005 117/2016 Cs-134 4.08E-01 5.36E-Ol 1.78E+OO u WG W-15 388905005 117/2016 Cs-137 -2.96E-01 5.85E-01 1.73E+OO u WG W-15 388905005 1/7/2016 Fe-59 -3.15E-Ol 1.15E+OO 3.27E+OO u WG W-15 388905005 117/2016 H-3 -5.26E+02 4.31E+02 1.50E+03 u WG W-15 388905005 117/2016 I-131 -7.43E-01 9.39E-01 2.98E+OO u WG W-15 388905005 117/2016 K-40 4.57E+OO l.llE+Ol 1.81E+Ol u WG W-15 388905005 117/2016 La-140 5.50E-01 8.96E-01 2.96E+OO u WG W-15 388905005 117/2016 Mn-54 1.03E-01 5.76E-01 1.64E+OO u WG W-15 388905005 117/2016 Nb-95 8.97E-01 5.90E-01 l.90E+OO u WG W-15 388905005 117/2016 Ru-103 -6.70E-01 5.80E-01 1.74E+OO u WG W-15 388905005 117/2016 Ru-106 3.81E+OO 4.81E+OO 1.62E+Ol u WG W-15 388905005 117/2016 Sb-124 -5.97E-01 l.19E+OO 3.85E+OO u WG W-15 388905005 1/7/2016 Sb-125 6.65E-Ol 1.49E+OO 4.87E+OO u WG W-15 388905005 117/2016 Se-75 1.78E+OO 9.09E-01 2.47E+OO u WG W-15 388905005 117/2016 Th-228 2.48E+OO l.72E+OO 3.33E+OO u WG W-15 388905005 117/2016 Zn-65 6.54E-Ol 1.28E+OO 3.75E+OO u WG W-15 388905005 117/2016 Zr-95 -2.20E-01 8.80E-01 2.87E+OO u WG SG-1 388905006 1/6/2016 Ac-228 5.58E+OO 2.62E+OO 5.78E+OO u WG SG-1 388905006 1/6/2016 Ag-108m -2.82E-01 4.62E-01 1.51E+OO u WG SG-1 388905006 1/6/2016 Ag-llOm -8.94E-02 4.84E-01 1.58E+OO u WG SG-1 388905006 1/6/2016 ALPHA 1.88E-01 1.22E+OO 4.00E+OO u WG SG-1 388905006 1/6/2016 Ba-140 3.33E+OO 2.72E+OO 8.90E+OO u WG SG-1 388905006 1/6/2016 Be-7 2.27E+OO 4.59E+OO 1.53E+Ol u WG SG-1 388905006 1/6/2016 BETA 5.39E+OO 1.14E+OO 3.03E+OO WG SG-1 388905006 1/6/2016 Ce-141 8.65E-02 l.09E+OO 3.17E+OO u WG SG-1 388905006 11612016 Ce-144 5.42E-01 3.86E+OO 1.19E+Ol u WG SG-1 388905006 1/6/2016 Co-57 -2.60E-01 4.49E-01 1.47E+OO u D-105 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-1 388905006 1/6/2016 Co-58 -6.96E-01 5.61E-01 l.67E+OO u WG SG-1 388905006 1/6/2016 Co-60 4.84E-01 5.48E-01 l.82E+OO u WG SG-1 388905006 1/6/2016 Cr-51 l.08E+OO 5.28E+OO l.70E+Ol u WG SG-1 388905006 1/6/2016 Cs-134 -3.92E-01 7.31E-01 l.69E+OO u WG SG-1 388905006 1/6/2016 Cs-137 -2.53E-01 5.36E-01 l.72E+OO u WG SG-1 388905006 1/6/2016 Fe-59 -l.03E+OO l.06E+OO 3.32E+OO u WG SG-1 388905006 1/6/2016 H-3 -2.43E+02 4.53E+02 l.53E+03 u WG SG-1 388905006 1/6/2016 I-131 6.35E-01 9.56E-Ol 3.23E+OO u WG SG-1 388905006 1/6/2016 K-40 7.44E+OO 9.77E+OO

l.46E+Ol u WG SG-1 388905006 1/6/2016 La-140 8.55E-03 9.81E-01 2.73E+OO u WG SG-1 388905006 1/6/2016 Mn-54 -l.21E-01 5.lOE-01 l.63E+OO u WG SG-1 388905006 1/6/2016 Nb-95 l.03E+OO 5.72E-Ol l.78E+OO u WG SG-1 388905006 1/6/2016 Ru-103 -5.43E-Ol 5.78E-01 l.83E+OO U WG SG-1 388905006 1/6/2016 Ru-106 5.97E+OO 4.69E+OO l.52E+Ol U WG SG-1 388905006 1/6/2016 Sb-124 6.20E-01 l.21E+OO 3.98E+OO U WG SG-1 388905006 1/6/2016 Sb-125 2.05E+OO l:44E+OO 4.70E+OO U WG SG-1 388905006 1/6/2016 Se-75 -2.73E-01 7.67E-01 2.46E+OO U WG SG-1 388905006 1/6/2016 Th-228 l.25E+OO l.66E+OO 3.05E+OO U WG SG-1 388905006 1/6/2016 Zn-65 -1.91E+OO 1.47E+OO 3.13E+OO U WG SG-1 388905006 1/6/2016 Zr-95 l.04E+OO l.03E+OO 3.15E+OO U WG SG-2 388905007 1/6/2016 Ac-228 -3.84E+OO 3.56E+OO 7.23E+OO U WG SG-2 388905007 1/6/2016 Ag-108m -9.47E-02 4.45E-01 l.46E+OO U WG SG-2 388905007 1/6/2016 Ag-llOm -8.19E-02 5.52E-01 l.54E+OO U WG SG-2 388905007 1/6/2016 ALPHA -7.99E-01 l.18E+OO 4.00E+OO U WG SG-2 388905007 1/6/2016 Ba-140 2.89E+OO 2.65E+OO 8.61E+OO U WG SG-2 388905007 1/6/2016 Be-7 -2.12E+OO 4.58E+OO l.48E+Ol U WG SG-2 388905007 1/6/2016 BETA 5.46E+OO l.21E+OO 3.39E+OO WG SG-2 388905007 1/6/2016 Ce-141 8.74E-OI l.70E+OO 3.03E+OO u WG SG-2 388905007 1/6/2016 Ce-144 3.44E+OO 3.89E+OO l.20E+OI u WG SG-2 388905007 1/6/2016 Co-57 -3.86E-01 4.88E-Ol l.55E+OO u WG SG-2 388905007 1/6/2016 Co-58 -l.03E+OO 5.33E-01 l.49E+OO u WG SG-2 388905007 1/6/2016 Co-60 3.13E-Ol 5.07E-01 l.68E+OO u WG SG-2 388905007 1/6/2016 Cr-51 7.26E-01 4.98E+OO I.67E+Ol u WG SG-2 388905007 1/6/2016 Cs-134 -2.71E-01 5.13E-01 I.69E+OO u WG SG-2 388905007 1/6/2016 Cs-137 -5.17E-01 8.48E-Ol l.75E+OO u WG SG-2 388905007 1/6/2016 Fe-59 -l.44E+OO l.IOE+OO 3.27E+OO u WG SG-2 388905007 1/6/2016 H-3 2.53E+Ol 4.54E+02 l.49E+03 u WG SG-2 388905007 1/6/2016 I-131 -4.85E-01 9.75E-01 3.20E+OO u WG SG-2 388905007 1/6/2016 K-40 3.70E+OO l.07E+Ol l.53E+Ol u WG SG-2 388905007 1/6/2016 La-140 -7.00E-01 7.79E-01 2.45E+OO u WG SG-2 388905007 1/6/2016 Mn-54 3.14E-Ol 4.77E-01 I.61E+OO u WG SG-2 388905007 1/6/2016 Nb-95 -4.47E-01 5.33E-01 l.72E+OO u WG SG-2 388905007 1/6/2016 Ru-103 4.65E-01 8.06E-01 l.77E+OO u WG SG-2 388905007 1/6/2016 Ru-106 9.85E+OO 4.98E+OO l.52E+Ol u WG SG-2 388905007 1/6/2016 Sb-124 7.14E-Ol l.05E+OO 3.57E+OO u WG SG-2 388905007 1/6/2016 Sb-125 l.29E+OO l.42E+OO 4.70E+OO u WG SG-2 388905007 1/6/2016 Se-75 -7.42E-Ol 8.22E-01 2.35E+OO u WG SG-2 388905007 1/6/2016 Th-228 -2.40E+OO I.58E+OO 3.56E+OO u WG SG-2 388905007 1/6/2016 Zn-65 9.04E-01 l.14E+OO 3.32E+OO u WG SG-2 388905007 1/6/2016 Zr-95 2.04E-01 8.55E-Ol 2.90E+OO u D-106 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-4 388905008 1/6/2016 Ac-228 -5.86E+OO 2.88E+OO 6.32E+OO u WG SG-4 388905008 116/2016 Ag-108m 5.97E-01 4.41E-01 1.42E+OO u WG SG-4 388905008 116/2016 Ag-llOm -1.16E+OO 5.04E-01 1.32E+OO u WG SG-4 388905008 1/6/2016 ALPHA -2.58E+OO 1.1 lE+OO 4.00E+OO u WG SG-4 388905008 1/6/2016 Ba-140 l.58E+OO 2.42E+OO 7.90E+OO u WG SG-4 388905008 116/2016 Be-7 -2.24E+OO 4.17E+OO 1.33E+Ol u WG SG-4 388905008 116/2016 BETA 1.12E+Ol 1.28E+OO 2.16E+OO WG SG-4 388905008 1/6/2016 Ce-141 1.62E+OO 1.lOE+OO 3.04E+OO u WG SG-4 388905008 1/6/2016 Ce-144 3.34E+OO 3.48E+OO l.llE+Ol u WG SG-4 388905008 1/6/2016 Co-57 -4.64E-Ol 4.54E-01 1.40E+OO u WG SG-4 388905008 1/6/2016 Co-58 5.99E-01 5.llE-01 l.51E+OO u WG SG-4 388905008 1/6/2016 Co-60 2.02E-Ol 5.12E-01 1.67E+OO u WG SG-4 388905008 1/6/2016 Cr-51 -8.89E+OO 5.42E+OO 1.55E+Ol u WG SG-4 388905008 1/6/2016 Cs-134 1.24E+OO 5.82E-01 1.81E+OO u WG SG-4 388905008 1/6/2016 Cs-137 3.68E-01 4.81E-01 l.64E+OO u WG SG-4 388905008 116/2016 Fe-59 -8.56E-01 9.97E-Ol 3.07E+OO u WG SG-4 388905008 1/6/2016 H-3 -2.82E+OO 4.61E+02 1.52E+03 u WG SG-4 388905008 1/6/2016 I-131 8.25E-01 l.03E+OO 3.00E+OO u WG SG-4 388905008 1/6/2016 K-40 3.20E+OO 1.15E+Ol 1.66E+Ol u WG SG-4 388905008 116/2016 La-140 -7.30E-01 8.02E-01 2.49E+OO u WG SG-4 388905008 1/6/2016 Mn-54 -5.92E-Ol 4.82E-Ol 1.47E+OO u WG SG-4 388905008 1/6/2016 Nb-95 3.53E-Ol 7.03E-Ol 1.53E+OO u WG SG-4 388905008 11612016 Ru-103 -3.0lE-01 5.95E-01 1.65E+OO u WG SG-4 388905008 1/6/2016 Ru-106 1.89E+OO 4.36E+OO 1.41E+Ol u WG SG-4 388905008 116/2016 Sb-124 5.26E-01 1.09E+OO 3.67E+OO u WG SG-4 388905008 1/6/2016 Sb-125 -8.89E-02 l.31E+OO 4.29E+OO u WG SG-4 388905008 1/6/2016 Se-75 6.18E-01 6.63E-Ol 2.21E+OO u WG SG-4 388905008 1/6/2016 Th-228 4.91E+OO l.59E+OO 2.90E+OO WG SG-4 388905008 1/6/2016 Zn-65 -3.62E-01 l.llE+OO 3.05E+OO u WG SG-4 388905008 116/2016 Zr-95 6.56E-Ol 8. l 7E-01 2.76E+OO u WG SG-5 388905009 1/6/2016 Ac-228 -4.30E+OO 3.58E+OO 7.54E+OO u WG SG-5 388905009 1/6/2016 Ag-108m 4.16E-Ol 5.23E-01 1.68E+OO u WG SG-5 388905009 1/6/2016 Ag-llOm -4.75E-03 5.08E-01 1.68E+OO u WG SG-5 388905009 116/2016 ALPHA -3.14E+OO l.llE+OO 4.00E+OO u WG SG-5 388905009 1/6/2016 Ba-140 -3.14E+OO 2.91E+OO 9.15E+OO u WG SG-5 388905009 11612016 Be-7 -7.63E+OO 5.07E+OO 1.54E+Ol u WG SG-5 388905009 116/2016 BETA 6.0lE+OO 9.29E-01 2.19E+OO WG SG-5 388905009 116/2016 Ce-141 -8.31E-01 1.56E+OO 3.79E+OO u WG SG-5 388905009 116/2016 Ce-144 1.77E+OO 4.15E+OO 1.40E+Ol u WG SG-5 388905009 1/6/2016 Co-57 2.03E-Ol 6.80E-Ol 1.86E+OO u WG SG-5 388905009 1/6/2016 Co-58 -3.19E-01 5.26E-Ol 1.67E+OO u WG SG-5 388905009 1/6/2016 Co-60 -3.70E-02 5.50E-Ol 1.82E+OO u WG SG-5 388905009 1/6/2016 Cr-51 -1.05E+Ol 6.93E+OO 1.75E+Ol u WG SG-5 388905009 1/6/2016 Cs-134 5.14E-Ol 5.72E-01 1.89E+OO u WG SG-5 388905009 1/6/2016 Cs-137 2.19E-Ol 5.95E-Ol 1.99E+OO u WG SG-5 388905009 1/6/2016 Fe-59 -3.79E-Ol 1.20E+OO 3.42E+OO u WG SG-5 388905009 1/6/2016 H-3 -8.09E+02 4.23E+02 l.51E+03 u WG SG-5 388905009 116/2016 I-131 -1.06E+OO 1.14E+OO 3.50E+OO u WG SG-5 388905009 1/6/2016 K-40 3.12E+Ol 1.20E+Ol 1.58E+Ol WG SG-5 388905009 11612016 La-140 7.04E-02 9.67E-Ol 3.19E+OO u D-107 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-5 388905009 1/6/2016 Mn-54 8.15E-01 5.77E-Ol 1.87E+OO u WG SG-5 388905009 1/6/2016 Nb-95 7.51E-01 6.20E-01 2.02E+OO u WG SG-5 388905009 1/6/2016 Ru-103 1.06E+OO 6.SlE-01 1.97E+OO u WG SG-5 388905009 1/6/2016 Ru-106 -9.86E-01 4.53E+OO 1.49E+Ol u WG SG-5 388905009 1/6/2016 Sb-124 -1.09E+OO 1.41E+OO 4.34E+OO u WG SG-5 388905009 1/6/2016 Sb-125 -1.41E+OO 1.64E+OO 5.04E+OO u WG SG-5 388905009 1/6/2016 Se-75 6.93E-01 8.48E-01 2.77E+OO u WG SG-5 388905009 1/6/2016 Th-228 l.37E+OO 2.32E+OO 3.70E+OO u WG SG-5 388905009 1/6/2016 Zn-65 1.05E+OO 1.25E+OO 3.72E+OO u WG SG-5 388905009 1/6/2016 Zr-95 6.29E-01 9.39E-01 3.12E+OO u WG W-10 389058003 117/2016 Ac-228 2.38E+OO 5.83E+OO 8.55E+OO u WG W-10 389058003 117/2016 Ag-108m -5.21E-01 5.65E-01 l.81E+OO u WG W-10 389058003 117/2016 Ag-llOm -2.0SE-01 6.72E-01 1.86E+OO u WG W-10 389058003 117/2016 Ba-140 -l.94E+OO 3.llE+OO 9.99E+OO u WG W-10 389058003 117/2016 Be-7 -6.51E-01 5.44E+OO 1.81E+Ol u WG W-10 389058003 117/2016 Ce-141 2.02E+OO l.36E+OO 3.91E+OO u WG W-10 389058003 117/2016 Ce-144 -2.51E+OO 4.42E+OO l.42E+Ol u WG W-10 389058003 117/2016 Co-57 9.29E-02 5.48E-01 l.86E+OO u WG W-10 389058003 117/2016 Co-58 1.44E+OO 7.1 lE-01 2.02E+OO u WG W-10 389058003 117/2016 Co-60 7.36E-01 6.25E-01 2.12E+OO u WG W-10 389058003 117/2016 Cr-51 -8.29E+OO 6.62E+OO l.99E+Ol u WG W-10 389058003 117/2016 Cs-134 l.74E-01 7.09E-01 2.23E+OO u WG W-10 389058003 117/2016 Cs-137 5.96E-01 6.94E-Ol 2.0SE+OO u WG W-10 389058003 117/2016 Fe-59 -2.29E+OO l.46E+OO 4.12E+OO u WG W-10 389058003 117/2016 H-3 -8.10E+02 4.26E+02 1.52E+03 u WG W-10 389058003 117/2016 I-131 1.78E-01 1.09E+OO 3.50E+OO u WG W-10 389058003 117/2016 K-40 3.63E+OO 1.60E+Ol 2.04E+Ol u WG W-10 389058003 117/2016 La-140 6.67E-01 1.0lE+OO 3.41E+OO u WG W-10 389058003 117/2016 Mn-54 -l.49E+OO 7.14E-01 1.93E+OO u WG W-10 389058003 117/2016 Nb-95 l.20E+OO 6.78E-01 2.12E+OO u WG W-10 389058003 117/2016 Ru-103 -5.98E-01 6.87E-01 2.18E+OO u WG W-10 389058003 117/2016 Ru-106 7.79E+OO 6.06E+OO l.73E+Ol u WG W-10 389058003 117/2016 Sb-124 6.23E+OO 4.04E+OO 5.59E+OO UI WG W-10 389058003 117/2016 Sb-125 l.57E+OO l.73E+OO 5.77E+OO u WG W-10 389058003 117/2016 Se-75 -1.55E+OO 9.41E-01 2.73E+OO u WG W-10 389058003 117/2016 Th-228 5.17E+OO 2.26E+OO 3.76E+OO WG W-10 389058003 117/2016 Zn-65 -l.41E+OO l.51E+OO 3.87E+OO u WG W-10 389058003 117/2016 Zr-95 l.60E+OO l.19E+OO 3.SOE+OO u WG W-11 389058004 117/2016 Ac-228 7.18E+OO 3.lOE+OO 6.91E+OO UI WG W-11 389058004 117/2016 Ag-108m 2.46E-01 4.35E-01 1.46E+OO u WG W-11 389058004 117/2016 Ag-llOm 8.92E-01 5.37E-01 1.69E+OO u WG W-11 389058004 117/2016 Ba-140 -l.67E-01 2.49E+OO 8.13E+OO u WG W-11 389058004 117/2016 Be-7 7.94E+OO 4.58E+OO l.46E+Ol u WG W-11 389058004 117/2016 Ce-141 -l.30E-Ol 9.51E-Ol 2.84E+OO u WG W-11 389058004 117/2016 Ce-144 6.79E-01 3.29E+OO l.llE+Ol u WG W-11 389058004 117/2016 Co-57 l.58E-02 4.44E-01 l.50E+OO u WG W-11 389058004 117/2016 Co-58 6.58E-02 4.77E-01 1.60E+OO u WG W-11 389058004 117/2016 Co-60 -9.0SE-03 5.33E-01 l.78E+OO u WG W-11 389058004 117/2016 Cr-51 -8.52E+OO 5.20E+OO l.57E+Ol u WG W-11 389058004 117/2016 Cs-134 -l.47E-01 5.62E-01 l.86E+OO u D-108 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-11 389058004 1/7/2016 Cs-137 -l.llE-02 5.51E-Ol 1.77E+OO u WG W-11 389058004 1/7/2016 Fe-59 -8.84E-Ol l.31E+OO 3.51E+OO u WG W-11 389058004 1/7/2016 H-3 -5.26E+02 4.31E+02 1.50E+03 u WG W-11 389058004 1/7/2016 I-131 -2.29E+OO 1.21E+OO 2.90E+OO u WG W-11 389058004 1/7/2016 K-40 1.0lE+Ol l.12E+Ol 1.42E+Ol u WG W-11 389058004 1/7/2016 La-140 1.57E+OO 9.75E-Ol 3.22E+OO u WG W-11 389058004 1/7/2016 Mn-54 -8.27E-01 5.15E-Ol l.49E+OO u WG W-11 389058004 1/7/2016 Nb-95 1.22E+OO 5.91E-Ol 1.86E+OO u WG W-11 389058004 117/2016 Ru-103 9.52E-Ol 5.07E-Ol l.53E+OO u WG W-11 389058004 1/7/2016 Ru-106 5.23E+OO 4.61E+OO 1.49E+Ol u WG W-11 389058004 1/7/2016 Sb-124 -2.79E+OO 1.43E+OO 3.62E+OO u WG W-11 389058004 1/7/2016 Sb-125 1.95E+OO l.37E+OO 4.47E+OO u WG W-11 389058004 1/7/2016 Se-75 -1.48E-Ol 6.97E-Ol 2.22E+OO u WG W-11 389058004 1/7/2016 Th-228 2.34E+OO 1.62E+OO 3.25E+OO u WG W-11 389058004 1/7/2016 Zn-65 4.02E-01 l.22E+OO 3.49E+OO u WG W-11 389058004 117/2016 Zr-95 -1.48E-Ol 8.66E-OI 2.90E+OO u WG W-12 389058005 1/7/2016 Ac-228 -3.72E+OO 3.64E+OO 8.09E+OO u WG W-12 389058005 1/7/2016 Ag-108m 3.14E-01 5.58E-Ol 1.85E+OO u WG W-12 389058005 1/7/2016 Ag-llOm -3.23E-03 8.73E-Ol 1.93E+OO u WG W-12 389058005 1/7/2016 Ba-140 4.77E-Ol 3.09E+OO 1.0lE+Ol u WG W-12 389058005 117/2016 Be-7 -5.23E-01 5.57E+OO 1.83E+Ol u WG W-12 389058005 117/2016 Ce-141 1.30E+OO l.30E+OO 3.83E+OO u WG W-12 389058005 117/2016 Ce-144 9.26E+OO 4.40E+OO 1.48E+Ol u WG W-12 389058005 1/7/2016 Co-57 -3.74E-Ol 6.05E-Ol 1.91E+OO u WG W-12 389058005 1/7/2016 Co-58 -7.25E-Ol 6.52E-Ol 1.95E+OO u WG W-12 389058005 1/7/2016 Co-60 -5.26E-Ol 6.60E-Ol 2.07E+OO u WG W-12 389058005 117/2016 Cr-51 1.30E+Ol 6.74E+OO 2.08E+Ol u WG W-12 389058005 1/7/2016 Cs-134 -7.66E-02 6.54E-Ol 2.IOE+OO u WG W-12 389058005 1/7/2016 Cs-137 -l.28E+OO 9.lOE-01 2.04E+OO u WG W-12 389058005 1/7/2016 Fe-59 -7.97E-Ol l.22E+OO 3.89E+OO u WG W-12 389058005 1/7/2016 H-3 4.94E+02 4.74E+02 l.48E+03 u WG W-12 389058005 1/7/2016 I-131 5.04E-01 l.14E+OO 3.80E+OO u WG W-12 389058005 1/7/2016 K-40 1.25E+Ol l.33E+Ol 1.98E+Ol u WG W-12 389058005 1/7/2016 La-140 2.42E-01 l.OlE+OO 3.33E+OO u WG W-12 389058005 117/2016 Mn-54 -7.24E-Ol 5.89E-01 1.82E+OO u WG W-12 389058005 117/2016 Nb-95 5.89E-Ol 9.20E-Ol 2.06E+OO u WG W-12 389058005 1/7/2016 Ru-103 7.86E-Ol 6.98E-OI 2.27E+OO u WG W-12 389058005 1/7/2016 Ru-106 -l.35E-Ol 6.76E+OO 1.80E+Ol u WG W-12 389058005 1/7/2016 Sb-124 2.71E-Ol 1.53E+OO 5.02E+OO u WG W-12 389058005 1/7/2016 Sb-125 -2.38E+OO 1.80E+OO 5.46E+OO u WG W-12 389058005 1/7/2016 Se-75 1.35E+OO 8.87E-Ol 2.85E+OO u WG W-12 389058005 1/7/2016 Th-228 -1.96E+OO 2.03E+OO 4.29E+OO u WG W-12 389058005 1/7/2016 Zn-65 1.25E+OO l.54E+OO 4.49E+OO u WG W-12 389058005 117/2016 Zr-95 2.73E+OO 2.15E+OO 3.65E+OO u WG MW-20 389058008 1/7/2016 Ac-228 2.58E+OO 4.15E+OO 6.38E+OO u WG MW-20 389058008 1/7/2016 Ag-108m 2.28E-Ol 4.68E-Ol 1.51E+OO u WG MW-20 389058008 1/7/2016 Ag-llOm -2.73E+OO 8.34E-Ol l.53E+OO u WG MW-20 389058008 1/7/2016 Ba-140 -4.19E-Ol 2.62E+OO 8.73E+OO u WG MW-20 389058008 1/7/2016 Be-7 -3.63E+OO 4.47E+OO 1.45E+Ol u WG MW-20 389058008 1/7/2016 Ce-141 1.86E+OO l.08E+OO 3.33E+OO u D-109 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG MW-20 389058008 117/2016 Ce-144 -l.54E+OO 3.49E+OO 1.17E+Ol u WG MW-20 389058008 1/7/2016 Co-57 7.78E-01 5.20E-01 l.59E+OO u WG MW-20 389058008 1/7/2016 Co-58 -6.21E-01 6.95E-01 l.49E+OO u WG MW-20 389058008 1/7/2016 Co-60 -7.73E-01 6.88E-01 l.74E+OO u WG MW-20 389058008 1/7/2016 Cr-51 -3.86E+OO 5.llE+OO l.62E+Ol u WG MW-20 389058008 1/7/2016 Cs-134 4.55E-01 5.32E-01 l.75E+OO u WG MW-20 389058008 1/7/2016 Cs-137 -l.07E+OO 9.48E-01 2.18E+OO u WG MW-20 389058008 1/7/2016 Fe-59 -l.37E+OO l.04E+OO 3.13E+OO u WG MW-20 389058008 117/2016 H-3 3.31E+02 4.79E+02 l.52E+03 u WG MW-20 389058008 1/7/2016 I-131 -5.89E-01 9.29E-01 2.93E+OO u WG MW-20 389058008 1/7/2016 K-40 -6.67E+OO l.33E+Ol 2.27E+Ol u WG MW-20 389058008 1/7/2016 La-140 l.82E+OO 1.25E+OO 3.14E+OO u WG MW-20 389058008 1/7/2016 Mn-54 3.94E-01 4.94E-01 l.62E+OO u WG MW-20 389058008 1/7/2016 Nb-95 -1.l lE-01 6.57E-Ol l.75E+OO U WG MW-20 389058008 1/7/2016 Ru-103 -8.71E-01 8.25E-01 l.80E+OO U WG MW-20 389058008 1/7/2016 Ru-106 4.61E+OO 4.59E+OO l.52E+Ol U WG MW-20 389058008 1/7/2016 Sb-124 l.19E+OO l.25E+OO 4.26E+OO U WG MW-20 389058008 1/7/2016 Sb-125 1.26E+OO l.51E+OO 4.84E+OO U WG MW-20 389058008 1/7/2016 Se-75 -1.80E-02 8.25E-01 2.38E+OO U WG MW-20 389058008 117/2016 Th-228 2.47E+OO l.85E+OO 3.23E+OO U WG MW-20 389058008 1/7/2016 Zn-65 9.85E-01 1.12E+OO 3.29E+OO U WG MW-20 389058008 1/7/2016 Zr-95 5.48E-01 8.28E-01 2.74E+OO U WG MW-21 389058009 1/7/2016 Ac-228 2.73E+OO 4.39E+OO 7.lOE+OO U WG MW-21 389058009 1/7/2016 Ag-108m 4.74E-01 4.73E-01 1.55E+OO U WG MW-21 389058009 1/7/2016 Ag-llOm -3.85E-01 5.08E-01 l.58E+OO U WG MW-21 389058009 1/7/2016 Ba-140 -2.18E+OO 2.49E+OO 7.75E+OO U WG MW-21 389058009 1/7/2016 Be-7 2.93E+OO 4.61E+OO 1.52E+Ol U WG MW-21 389058009 1/7/2016 Ce-141 2.40E+OO 1.23E+OO 3.30E+OO U WG MW-21 389058009 1/7/2016 Ce-144 -4.26E+OO 3.84E+OO 1.19E+Ol U WG MW-21 389058009 1/7/2016 Co-57 2.83E-01 4.95E-01 l.61E+OO U WG MW-21 389058009 1/7/2016 Co-58 -7.84E-01 5.06E-01 l.51E+OO U WG MW-21 389058009 1/7/2016 Co-60 7.14E-02 5.49E-01 l.79E+OO U WG MW-21 389058009 1/7/2016 Cr-51 -l.38E+OO 5.00E+OO l.67E+Ol U WG MW-21 389058009 1/7/2016 Cs-134 l.36E+OO 7.36E-Ol l.80E+OO U WG MW-21 389058009 1/7/2016 Cs-137 -5.81E-01 8.3 lE-01 l.78E+OO U WG MW-21 389058009 117/2016 Fe-59 -5.90E-01 9.40E-01 2.99E+OO U WG MW-21 389058009 1/7/2016 H-3 -l.21E+02 4.58E+02 l.53E+03 U WG MW-21 389058009 1/7/2016 1-131 l.08E+OO 9.31E-01 3.06E+OO U WG MW-21 389058009 1/7/2016 K-40 -9.25E+OO 9.15E+OO 2.40E+Ol U WG MW-21 389058009 1/7/2016 La-140 -2.73E-01 7.67E-01 2.52E+OO U WG MW-21 389058009 117/2016 Mn-54 -8.00E-02 4.69E-01 l.56E+OO U WG MW-21 389058009 1/7/2016 Nb-95 3.35E-01 5.83E-Ol l.74E+OO U WG MW-21 389058009 1/7/2016 Ru-103 -2.15E-Ol 5.54E-01 l.80E+OO U WG MW-21 389058009 1/7/2016 Ru-106 -2.94E+OO 4.66E+OO l.47E+Ol U WG MW-21 389058009 1/7/2016 Sb-124 l.99E+OO 1.30E+OO 3.91E+OO U WG MW-21 389058009 1/7/2016 Sb-125 2.19E+OO l.47E+OO 4.71E+OO U WG MW-21 389058009 1/7/2016 Se-75 -6.87E-Ol 7.12E-01 2.31E+OO U WG MW-21 389058009 1/7/2016 Th-228 2.08E+OO l.62E+OO 2.99E+OO U WG MW-21 389058009 1/7/2016 Zn-65 5.64E-Ol l.09E+OO 3.18E+OO U WG MW-21 389058009 1/7/2016 Zr-95 -9.81E-01 9.lOE-01 2.70E+OO U D-110 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-1 389058001 1/8/2016 Ac-228 9.49E+OO 3.32E+OO 7.96E+OO UI WG W-1 389058001 1/8/2016 Ag-108m -2.81E-01 5.70E-01 1.80E+OO u WG W-1 389058001 1/8/2016 Ag-llOm -7.31E-01 9.46E-01 1.84E+OO u WG W-1 389058001 1/8/2016 Ba-140 -l.50E-01 2.53E+OO 8.48E+OO u WG W-1 389058001 1/8/2016 Be-7 8.53E+OO 5.78E+OO 1.81E+Ol u WG W-1 389058001 1/8/2016 Ce-141 4.67E-01 l.15E+OO 3.51E+OO u WG W-1 389058001 1/8/2016 Ce-144 -3.22E-OI 4.20E+OO 1.35E+Ol u WG W-1 389058001 1/8/2016 Co-57 l.42E+OO 6.41E-OI 1.85E+OO u WG wc1 389058001 1/8/2016 Co-58 -1.18E-OI 6.IOE-01 1.97E+OO u WG W-1 389058001 1/8/2016 Co-60 4.75E-02 7.58E-Ol 2.14E+OO u WG W-1 389058001 1/8/2016 Cr-51 2.87E-OI 5.46E+OO l.80E+Ol u WG W-1 389058001 1/8/2016 Cs-134 3.92E-OI 6.52E-OI 2.16E+OO u WG W-1 389058001 1/8/2016 Cs-137 -6.60E-02 6.30E-Ol 2.08E+OO u WG W-1 389058001 1/8/2016 Fe-59 -2.39E-01 1.27E+OO 4.20E+OO u WG W-1 389058001 1/8/2016 H-3 -1.37E+02 4.45E+02 1.48E+03 u WG W-1 389058001 1/8/2016 I-131 l.18E+OO 9.89E-OI 3.19E+OO u WG W-1 389058001 1/8/2016 K-40 2.27E+OO 1.41E+OI l.92E+OI u WG W-1 389058001 1/8/2016 La-140 -1.12E+OO l.04E+OO 3.06E+OO u WG W-1 389058001 1/8/2016 Mn-54 6.IOE-01 5.98E-Ol l.96E+OO u WG W-1 389058001 1/8/2016 Nb-95 9.0IE-01 6.55E-OI 2.12E+OO u WG W-1 389058001 1/8/2016 Ru-103 2.77E-01 5.99E-OI 2.04E+OO u WG W-1 389058001 1/8/2016 Ru-106 -2.50E+OO 5.24E+OO 1.71E+Ol u WG W-1 389058001 1/8/2016 Sb-124 9.07E-01 l.51E+OO 5.13E+OO u WG W-1 389058001 1/8/2016 Sb-125 -2.92E+OO l.77E+OO 5.00E+OO u WG W-1 389058001 1/8/2016 Se-75 l.71E+OO 8.99E-01 2.78E+OO u WG W-1 389058001 1/8/2016 Th-228 -l.20E+OO 1.68E+OO 4.23E+OO u WG W-1 389058001 1/8/2016 Zn-65 -3.94E-OI 1.49E+OO 4.19E+OO u WG W-1 389058001 1/8/2016 Zr-95 l.93E+OO l.IOE+OO 3.51E+OO u WG W-7 389058002 1/8/2016 Ac-228 -4.02E+OO 3.54E+OO 8.15E+OO u WG W-7 389058002 1/8/2016 Ag-108m -4.55E-OI 5.93E-01 l.61E+OO u WG W-7 389058002 1/8/2016 Ag-llOm -8.08E-Ol 5.97E-Ol 1.82E+OO u WG W-7 389058002 1/8/2016 Ba-140 -9.14E-01 2.84E+OO 9.02E+OO u WG W-7 389058002 1/8/2016 Be-7 -l.48E+OO 4.99E+OO 1.60E+OI u WG W-7 389058002 118/2016 Ce-141 1.72E+OO 1.53E+OO 3.45E+OO u WG W-7 389058002 118/2016 Ce-144 5.62E+OO 4.27E+OO l.34E+Ol u WG W-7 389058002 118/2016 Co-57 -3.84E-OI 5.43E-OI l.71E+OO u WG W-7 389058002 1/8/2016 Co-58 -7.74E-Ol 6.08E-OI l.83E+OO u WG W-7 389058002 118/2016 Co-60 1.75E-Ol 6.07E-OI 2.05E+OO u WG W-7 389058002 1/8/2016 Cr-51 -3.56E+OO 5.48E+OO 1.77E+Ol u WG W-7 389058002 1/8/2016 Cs-134 -7.57E-02 6.27E-01 l.79E+OO u WG W-7 389058002 118/2016 Cs-137 -2.77E-OI 6.04E-Ol l.99E+OO u WG W-7 389058002 1/8/2016 Fe-59 7.27E-Ol 1.18E+OO 3.87E+OO u WG W-7 389058002 1/8/2016 H-3 l.20E+02 4.67E+02 l.52E+03 u WG W-7 389058002 1/8/2016 I-131 4.76E-OI l.03E+OO 3.40E+OO u WG W-7 389058002 118/2016 K-40 -l.05E+OI 9.16E+OO 2.54E+OI u WG W-7 389058002 1/8/2016 La-140 -1.58E-01 l.06E+OO 3.47E+OO u WG W-7 389058002 1/8/2016 Mn-54 -4.34E-01 5.82E-Ol l.84E+OO u WG W-7 389058002 1/8/2016 Nb-95 7.94E-01 7.04E-01 2.06E+OO u WG W-7 389058002 1/8/2016 Ru-103 -8.35E-01 7.93E-OI 2.08E+OO u WG W-7 389058002 1/8/2016 Ru-106 -3.42E+OO 4.92E+OO 1.60E+Ol u D-111 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-7 389058002 1/8/2016 Sb-124 -2.12E+OO l.54E+OO 4.36E+OO u WG W-7 389058002 1/8/2016 Sb-125 -8.24E-01 l.63E+OO 5.22E+OO u WG W-7 389058002 1/8/2016 Se-75 4.78E-01 8.18E-01 2.75E+OO u WG W-7 389058002 1/8/2016 Th-228 2.57E+OO l.84E+OO 4.26E+OO u WG W-7 389058002 1/8/2016 Zn-65 8.53E-01 l.45E+OO 4.14E+OO u WG W-7 389058002 1/8/2016 Zr-95 7.54E-01 l.02E+OO 3.42E+OO u WG W-13 389058006 1/8/2016 Ac-228 6.92E+OO 2.94E+OO 7.75E+OO u WG W-13 389058006 1/8/2016 Ag-108m -2.00E-01 4.90E-01 l.57E+OO u WG W-13 389058006 1/8/2016 Ag-llOm -l.OOE-01 4.75E-01 l.58E+OO u WG W-13 389058006 1/8/2016 Ba-140 -2.28E+OO 2.68E+OO 8.19E+OO u WG W-13 389058006 1/8/2016 Be-7 3.60E+OO 4.58E+OO l.49E+Ol u WG W-13 389058006 1/8/2016 Ce-141 -3.90E-01 l.38E+OO 3.22E+OO u WG W-13 389058006 1/8/2016 Ce-144 -3.20E+OO 3.89E+OO l.21E+Ol u WG W-13 389058006 1/8/2016 Co-57 -5.99E-02 4.86E-01 l.57E+OO u WG W-13 389058006 1/8/2016 Co-58 -6.98E-02 5.25E-01 l.72E+OO u WG W-13 389058006 1/8/2016 Co-60 l.67E-01 5.58E-01 l.87E+OO u WG W-13 389058006 1/8/2016 Cr-51 9.12E+OO 5.48E+OO 1.69E+Ol u WG W-13 389058006

.. . Jl8/2016 Cs"134 ..... 3.87E-Ol. . 6.06Ec01 *-1.85E+OO u WG W-13 389058006 1/8/2016 Cs-137 -3.85E-01 5.27E-01 1.70E+OO u WG W-13 389058006 1/8/2016 Fe-59 3.73E-01 l.llE+OO 3.61E+OO u WG W-13 389058006 1/8/2016 H-3 4.54E+02 4.86E+02 l.53E+03 u WG W-13 389058006 1/8/2016 I-131 -2.49E+OO 1.19E+OO 2.74E+OO u WG W-13 389058006 1/8/2016 K-40 8.27E+OO l.28E+Ol 2.00E+Ol u WG W-13 389058006 1/8/2016 La-140 7.53E-01 8.53E-01 2.86E+OO u WG W-13 389058006 1/8/2016 Mn-54 -5.21E-Ol 5.46E-Ol l.69E+OO u WG W-13 . 389058006 1/8/2016 Nb-95 -2.23E-01 5.26E-01 l.71E+OO u WG W-13 389058006 1/8/2016 Ru-103 -6.83E-01 6.33E-01 l.64E+OO u WG W-13 389058006 1/8/2016 Ru-106 -2.65E+OO 4.38E+OO l.43E+Ol u WG W-13 389058006 1/8/2016 Sb-124 1.36E-01 l.25E+OO 4.llE+OO u WG W-13 389058006 1/8/2016 Sb-125 -2.14E+OO 1.54E+OO 4.56E+OO u WG W-13 389058006 1/8/2016 Se-75 3.94E-02 7.07E-01 2.37E+OO u WG W-13 389058006 1/8/2016 Th-228 4.74E-01 l.88E+OO 3.22E+OO u WG W-13 389058006 1/8/2016 Zn-65 l.05E+OO l.42E+OO 4.04E+OO u WG W-13 389058006 1/8/2016 Zr-95 2.71E+OO l.llE+OO 3.33E+OO u WG W-14 389058007 1/8/2016 Ac-228 6.66E+OO 3.89E+OO 8.06E+OO u WG W-14 389058007 1/8/2016 Ag-108m 6.56E-02 5.32E-01 l.77E+OO u WG W-14 389058007 1/8/2016 Ag-llOm -2.80E-Ol 6.0SE-01 l.91E+OO u WG W-14 389058007 1/8/2016 Ba-140 3.llE+OO 3.03E+OO 9.89E+OO u WG W-14 389058007 1/8/2016 Be-7 -4.65E+OO 5.35E+OO l.70E+Ol u WG W-14 389058007 1/8/2016 Ce-141 -3.03E+OO l.61E+OO 3.27E+OO u WG W-14 389058007 1/8/2016 Ce-144 2.53E+OO 3.54E+OO 1.19E+Ol u WG W-14 389058007 1/8/2016 Co-57 l.99E-02 4.68E-01 1.48E+OO u WG W-14 389058007 1/8/2016 Co-58 3.77E-01 6.92E-01 2.0lE+OO u WG W-14 389058007 1/8/2016 Co-60 -3.45E-01 6.76E-01 2.17E+OO u WG W-14 389058007 1/812016 Cr-51 -5.41E+OO 6.lOE+OO 1.81E+Ol u WG W-14 389058007 1/8/2016 Cs-134 -l.78E+OO 8.21E-01 2.04E+OO u WG W-14 389058007 1/8/2016 Cs-137 -l.27E+OO 7.43E-01 2.07E+OO u WG W-14 389058007 1/8/2016 Fe-59 3.38E-01 l.38E+OO 4.48E+OO u WG W-14 389058007 1/8/2016 H-3 -1.18E+02 4.60E+02 l.53E+03 u WG. W-14 389058007 1/8/2016 I-131 l.69E-01 9.79E-01 3.31E+OO u D-112 I _,_

Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. 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IOE-01 2.26E+OO 7.48E+OO u WG W-4 389593001 1/15/2016 Th-228 8.20E-01 4.58E+OO 9.22E+OO u WG W-4 389593001 1/15/2016 Zn-65 -6.99E+OO 4.44E+OO 1.13E+Ol u WG W-4 389593001 1/15/2016 Zr-95 -2.45E+OO 3.03E+OO 9.24E+OO u WG W-5 389593002 1/15/2016 Ac-228 -7.41E-OI 7.21E+OO 2.39E+Ol u WG W-5 389593002 1/15/2016 Ag-108m -8.64E-Ol 1.54E+OO 5.0lE+OO u WG W-5 389593002 1/15/2016 Ag-l!Om 3.47E-01 l.71E+OO 5.66E+OO u WG W-5 389593002 1/15/2016 Ba-140 -7.05E+OO 8.48E+OO 2.64E+Ol u WG W-5 389593002 1/15/2016 Be-7 1.89E+Ol 1.55E+Ol 5.27E+Ol u WG W-5 389593002 1/15/2016 Ce-141 -3.66E+OO 3.0lE+OO 9.45E+OO u WG W-5 389593002 1/15/2016 Ce-144 I.80E+Ol 1.34E+OI 3.80E+Ol u WG W-5 389593002 1/15/2016 Co-57 2.16E-Ol 1.54E+OO 4.84E+OO u WG W-5 389593002 1/15/2016 Co-58 -l.21E+OO 1.87E+OO 4.75E+OO u WG W-5 389593002 1/15/2016 Co-60 -2.94E+OO 1.85E+OO 4.57E+OO u D-113 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-5 389593002 1/15/2016 Cr-51 -5.0lE+OO l.65E+Ol 5.28E+Ol u WG W-5 389593002 1115/2016 Cs-134 l.80E+OO 2.0lE+OO 6.44E+OO u WG W-5 389593002 1/15/2016 Cs-137 8.73E-Ol 1.83E+OO 6.12E+OO u WG W-5 389593002 1115/2016 Fe-59 5.50E-01 3.04E+OO l.02E+Ol u WG W-5 389593002 1/15/2016 H-3 -7.26E+02 3.96E+02 1.41E+03 u WG W-5 389593002 1115/2016 I-131 6.SOE-01 2.82E+OO 9.21E+OO u WG W-5 389593002 1115/2016 K-40 -3.95E+Ol 2.46E+Ol 7.68E+Ol u WG W-5 389593002 1115/2016 La-140 -5.57E+OO 3.73E+OO 7.97E+OO u WG W-5 389593002 1/15/2016 Mn-54 9.44E-01 2.05E+OO 5.93E+OO u WG W-5 389593002 1/15/2016 Nb-95 6.59E-01 1.89E+OO 6.33E+OO u WG W-5 389593002 1/15/2016 Ru-103 8.09E-01 l.66E+OO 5.66E+OO u WG W-5 389593002 1115/2016 Ru-106 -6.58E+OO l.54E+Ol 4.92E+Ol u WG W-5 389593002 1115/2016 Sb-124 3.0lE+OO 3.81E+OO l.35E+Ol u WG W-5 389593002 1115/2016 Sb-125 8.72E+OO 4.83E+OO l.61E+Ol u WG W-5 389593002 1/15/2016 Se-75 4.42E+OO 2.59E+OO 8.33E+OO u WG W-5 389593002 1/15/2016 Th-228 2.13E+OO 3.46E+OO l.lOE+Ol u WG W-5 389593002 1115/2016 Zn-65 4.92E-03 4.09E+OO 1.16E+Ol u WG W-5 389593002 1/15/2016 Zr-95 6.18E+OO 2.30E+OO 8.26E+OO u WG W-6 389593003 1115/2016 Ac-228 3.23E+OO 5.62E+OO l.80E+Ol u WG W-6 389593003 1/15/2016 Ag-108m -l.57E+OO l.58E+OO 3.89E+OO u WG W-6 389593003 1/15/2016 Ag-llOm 3.68E-01 l.31E+OO 4.42E+OO u WG W-6 389593003 1115/2016 Ba-140 l.02E+OO 6.34E+OO 2.15E+Ol u WG W-6 389593003 1/15/2016 Be-7 -2.21E+Ol l.33E+Ol 3.70E+Ol u WG W-6 389593003 1/15/2016 Ce-141 -4.36E+OO 3.38E+OO 8.77E+OO u WG W-6 389593003 1115/2016 Ce-144 -2.0lE+Ol l.13E+Ol 3.21E+Ol u WG W-6 389593003 1/15/2016 Co-57 -1.llE+OO l.38E+OO 4.44E+OO u WG W-6 389593003 1/15/2016 Co-58 -4.56E-01 l.30E+OO 4.12E+OO u WG W-6 389593003 1/15/2016 Co-60 -2.24E+OO l.77E+OO 4.92E+OO u WG W-6 389593003 1/15/2016 Cr-51 -1.12E+Ol l.63E+Ol 4.94E+Ol u WG W-6 389593003 1/15/2016 Cs-134 -2.29E-01 l.42E+OO 4.58E+OO u WG W-6 389593003 1/15/2016 Cs-137 -3.79E-01 l.47E+OO 4.53E+OO u WG W-6 389593003 1/15/2016 Fe-59 9.20E-01 2.90E+OO 9.98E+OO u WG W-6 389593003 1/15/2016 H-3 l.78E+02 4.31E+02 l.39E+03 u WG W-6 389593003 1/15/2016 I-131 2.73E+OO 3.07E+OO 9.04E+OO u WG W-6 389593003 1/15/2016 K-40 3.81E+OO l.60E+Ol 4.71E+Ol u WG W-6 389593003 1/15/2016 La-140 -5.73E-01 2.lOE+OO 6.62E+OO u WG W-6 389593003 1/15/2016 Mn-54 l.67E+OO l.51E+OO 5.15E+OO U WG W-6 389593003 1/15/2016 Nb-95 -2.55E+OO 1.70E+OO 4.61E+OO U WG W-6 389593003 1/15/2016 Ru-103 -l.90E+OO l.61E+OO 4.86E+OO U WG W-6 389593003 1115/2016 Ru-106 9.55E+OO 1.26E+Ol 4.34E+Ol U WG W-6 389593003 1/15/2016 Sb-124 1.30E+OO 3.33E+OO l.14E+Ol U WG W-6 389593003 1/15/2016 Sb-125 l.51E+Ol 5.41E+OO 1.36E+Ol UI WG W-6 389593003 1/15/2016 Se-75 3.73E+OO 2.71E+OO 7.74E+OO U WG W-6 389593003 1115/2016 Th-228 3.95E+OO 3.95E+OO 1.08E+Ol U WG W-6 389593003 1/15/2016 Zn-65 4.13E+OO 3.66E+OO 9.02E+OO U WG W-6 389593003 1/15/2016 Zr-95 3.81E+OO 2.72E+OO 9.29E+OO U WG W-3 394508001 3/31/2016 Ac-228 -3.40E+OO 2.81E+OO 6.28E+OO U WG W-3 394508001 3/31/2016 Ag-108m -9.96E-01 4.81E-01 1.30E+OO U WG W-3 394508001 3/31/2016 Ag-llOm -8.46E-02 5.86E-01 1.90E+OO U WG W-3 394508001 3/31/2016 Ba-140 3.75E+OO 2.50E+OO

7.79E+OO U D-114 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-3 394508001 3/31/2016 Be-7 2.73E+OO 4.09E+OO l.32E+Ol u WG W-3 394508001 3/31/2016 Ce-141 1.44E+OO 1.23E+OO 2.78E+OO u WG W-3 394508001 3/3112016 Ce-144 1.75E+OO 3.28E+OO 1.07E+Ol u WG W-3 394508001 3/31/2016 Co-57 6.71E-01 4.49E-Ol 1.40E+OO u WG W-3 394508001 3/31/2016 Co-58 -7.30E-02 4.42E-01 1.44E+OO u WG W-3

394508001 3/31/2016 Co-60 -8.llE-02 4.80E-01 1.57E+OO u WG W-3 394508001 3/3112016 Cr-51 2.48E+OO 4.48E+OO 1.49E+Ol u WG W-3 394508001 3/3112016 Cs-134 2.32E-01 4.87E-01 1.61E+OO u WG W-3 394508001 3/31/2016 Cs-137 -1.69E-01 4.45E-01 1.46E+OO u WG W-3 394508001 3/3112016 Fe-59 l.35E+OO 1.09E+OO 3.17E+OO u WG W-3 394508001 3/31/2016 H-3 1.69E+02 4.43E+02 1.43E+03 u WG W-3 394508001 3/31/2016 I-131 5.42E-01 8.65E-01 2.85E+OO u WG W-3 394508001 3/31/2016 K-40 2.88E+Ol 1.29E+Ol 1.62E+Ol WG W-3 394508001 3/3112016 La-140 -8.19E-01 9.52E-01 2.44E+OO u WG W-3 394508001 3/31/2016 Mn-54 -1.05E-01 4.43E-01 1.44E+OO u WG W-3 394508001 3/31/2016 Nb-95 2.18E-01 4.65E-01 1.54E+OO u WG W-3 394508001 3/31/2016 Ru-103 -6.53E-01 5.90E-01 1.54E+OO u WG W-3 394508001 3/31/2016 Ru-106 3.71E+OO 4.12E+OO l.38E+Ol u WG W-3 394508001 3/3112016 Sb-124 -1.13E+OO l.24E+OO 3.91E+OO u WG W-3 394508001 3/3112016 Sb-125 -3.22E-01 l.32E+OO 4.26E+OO u WG W-3 394508001 3/31/2016 Se-75 -5.36E-01 6.27E-01 2.04E+OO u WG W-3 394508001 3/3112016 Th-228 -2.22E-01 1.41E+OO 3.21E+OO u WG W-3 394508001 3/31/2016 Zn-65 1.08E+OO 1.09E+OO 3.19E+OO u WG W-3 394508001 3/3112016 Zr-95 -6.56E-01 8.02E-01 2.53E+OO u WG W-7 394508002 3/3112016 Ac-228 1.52E+OO 3.21E+OO 6.50E+OO u WG W-7 394508002 3/3112016 Ag-108111

-4.34E-01 4.32E-01 l.33E+OO u WG W-7 394508002 3/31/2016 Ag-110111 2.93E-01 5.96E-01 1.97E+OO u WG W-7 394508002 3131/2016 Ba-140 1.42E+OO 2.16E+OO 6.96E+OO u WG W-7 394508002 3/31/2016 Be-7 1.llE+OO 4.19E+OO 1.36E+Ol u WG W-7 394508002 3/31/2016 Ce-141 4.79E-01 l.47E+OO 2.71E+OO u WG W-7 394508002 3/31/2016 Ce-144 9.38E-01 3.27E+OO L06E+Ol u WG W-7 394508002 3/3112016 Co-57 -8.78E-02 4.19E-01 l.35E+OO u WG W-7 394508002 3/31/2016 Co-58 1.08E+OO 5.27E-01 1.62E+OO u WG W-7 394508002 3/31/2016 Co-60 6.23E-01 4.79E-01 1.59E+OO u WG W-7 394508002 3/31/2016 Cr-51 5.40E+OO 4.41E+OO 1.43E+Ol u WG W-7 394508002 3/31/2016 Cs-134 3.85E-01 4.65E-01 1.55E+OO u WG W-7 394508002 3/31/2016 Cs-137 -3.03E-01 4.47E-01 1.45E+OO u WG W-7 394508002 3/3112016 Fe-59 -3.88E-01 9.97E-Ol 3.15E+OO u WG W-7 394508002 3/3112016 H-3 -6.08E+02 3.65E+02 1.29E+03 u WG W-7 394508002 3/31/2016 I-131 5.50E-04 7.77E-01 2.55E+OO u WG W-7 394508002 3/31/2016 K-40 3.03E+Ol 6.64E+OO 1.59E+Ol WG W-7 394508002 3/31/2016 La-140 9.29E-01 7.82E-01 2.59E+OO u WG W-7 394508002 3/31/2016 Mn-54 6.74E-01 4.79E-01 1.54E+OO u WG W-7 394508002 3/31/2016 Nb-95 6.35E-02 4.85E-01 L61E+OO u WG W-7 394508002 3/31/2016 Ru-103 -1.03E+OO 6.31E-01 1.54E+OO u WG W-7 394508002 3/31/2016 Ru-106 -1.63E-01 4.0lE+OO l.35E+Ol u WG W-7 394508002 3/3112016 Sb-124 1.79E+OO l.17E+OO 3.83E+OO u WG W-7 394508002 3/31/2016 Sb-125 -1.65E+OO l.32E+OO 3.98E+OO u WG W-7 394508002 3/31/2016 Se-75 -2.91E-01 6.25E-01 2.07E+OO u WG W-7 394508002 3/3112016 Th-228 2.95E+OO l.74E+OO 2.71E+OO ur D-115 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCvL) WG W-7 394508002 3/31/2016 Zn-65 1.25E+OO 1.09E+OO 3.0SE+OO u WG W-7 394508002 3/31/2016 Zr-95 -3.39E-01 8.0SE-01 2.63E+OO u WG W-10 394508003 3/31/2016 Ac-228 l.33E+OO 3.77E+OO 5.06E+OO u WG W-10 394508003 3/31/2016 Ag-108m 6.02E-01 4.63E-01 1.45E+OO u WG W-10 394508003 3/31/2016 Ag-llOm 5.47E-01 6.13E-01 2.0lE+OO u WG W-10 394508003 3/31/2016 Ba-140 2.33E+OO 2.21E+OO 7.35E+OO u WG W-10 394508003 3/31/2016 Be-7 6.54E+OO 4.32E+OO 1.41E+Ol u WG. W-10 394508003 3/31/2016 Ce-141 2.69E+OO 1.21E+OO 3.16E+OO u WG W-10 394508003 3/31/2016 Ce-144 -2.21E+OO 3.59E+OO 1.15E+Ol u WG W-10 394508003 3/31/2016 Co-57 5.72E-01 4.90E-01 l.61E+OO u WG W-10 394508003 3/31/2016 Co-58 1.48E-01 4.62E-01 l.52E+OO u WG W-10 394508003 3/31/2016 Co-60 9.24E-02 4.66E-01 l.56E+OO u WG W-10 394508003 3/31/2016 Cr-51 -2.68E-01 4.68E+OO 1.52E+Ol u WG W-10 394508003 3/31/2016 Cs-134 5.36E-01 4.SSE-01 l.60E+OO u WG W-10 394508003 3/31/2016 Cs-137 7.86E-01 5.05E-01 1.62E+OO u WG W-10 394508003 3/31/2016 Fe-59 -3.lOE-01 8.82E-01 2.92E+OO u WG W-10 394508003 3/31/2016 H-3 -7.48E+Ol 4.50E+02 1.49E+03 u WG W-10 394508003 3/31/2016 I-131 -7.26E-01 8.66E-01 2.70E+OO u WG W-10 394508003 3/31/2016 K-40 -2.24E+Ol 9.58E+OO l.99E+Ol u WG W-10 394508003 3/31/2016 La-140 8.05E-01 7.73E-01 2.57E+OO u WG W-10 394508003 3/31/2016 Mn-54 3.91E-02 4.41E-01 1.45E+OO u WG W-10 394508003 3/31/2016 Nb-95 3.43E-01 7.45E-01 1.20E+OO u WG W-10 394508003 3/31/2016 Ru-103 -1.75E-02 5.44E-01 l.59E+OO u WG W-10 394508003 3/31/2016 Ru-106 4.85E+OO 4.33E+OO l.43E+Ol u WG W-10 394508003 3/31/2016 Sb-124 -l.ISE-01 l.12E+OO 3.64E+OO u WG W-10 394508003 3/31/2016 Sb-125 7.90E-02 1.33E+OO 4.26E+OO u WG W-10 394508003 3/31/2016 Se-75 l.63E+OO 9.67E-01 2.31E+OO u WG W-10 394508003 3/31/2016 Th-228 -5.60E-01 l.61E+OO 3.33E+OO u WG W-10 394508003 3/31/2016 Zn-65 3.SOE-02 l.OSE+OO 3.14E+OO u WG W-10 394508003 3/31/2016 Zr-95 6.51E-Ol 8.13E-01 2.69E+OO u WG W-11 394508004 3/31/2016 Ac-228 -1.07E+OO 3.00E+OO 5.61E+OO u WG W-11 394508004 3/31/2016 Ag-108m -6.06E-01 3.86E-01 1.14E+OO u WG W-11 394508004 3/31/2016 Ag-llOm 4.83E-01 5.27E-01 1.76E+OO u WG W-11 394508004 3/31/2016 Ba-140 2.70E+OO 1.93E+OO 6.16E+OO u WG W-11 394508004 3/31/2016 Be-7 -9.71E-02 3.44E+OO l.13E+Ol u WG W-11 394508004 3/31/2016 Ce-141 -9.42E-02 7.56E-01 2.31E+OO u WG W-11 394508004 3/31/2016 Ce-144 4.03E+OO 2.88E+OO 8.99E+OO u WG W-11 394508004 3/31/2016 Co-57 5.55E-01 3.74E-01 1.17E+OO u WG W-11 394508004 3/31/2016 Co-58 2.41E-Ol 3.67E-01 l.24E+OO u WG W-11 394508004 3/31/2016 Co-60 -l.83E-01 7.15E-01 l.33E+OO u WG W-11 394508004 3/31/2016 Cr-51 -3.42E+OO 3.86E+OO l.24E+Ol u WG W-11 394508004 3/31/2016 Cs-134 2.llE-01 4.06E-01 l.37E+OO u WG W-11 394508004 3/31/2016 Cs-137 -9.83E-02 4.26E-01 l.35E+OO u WG W-11 394508004 3/31/2016 Fe-59 4.32E-01 7.66E-01 2.54E+OO u WG W-11 394508004 3/31/2016 H-3 2.28E+02 4.60E+02 1.48E+03 u WG W-11 394508004 3/31/2016 I-131 8.21E-01 6.86E-Ol 2.24E+OO u WG W-11 394508004 3/31/2016 K-40 2.70E+OO 9.12E+OO 1.22E+Ol u WG W-11 394508004 3/31/2016 La-140 -2.SOE-01 6.93E-01 l.93E+OO u WG W-11 394508004 3/31/2016 Mn-54 3.53E-01 3.91E-01 l.31E+OO u WG W-11 394508004 3/31/2016 Nb-95 6.74E-01 4.23E-01 l.37E+OO u D-116 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-11 394508004 3/31/2016 Ru-103 -3.00E-01 4.81E-OI l.33E+OO u WG W-11 394508004 3/31/2016 Ru-106 -4.04E+OO 3.68E+OO l.llE+Ol u WG W-11 394508004 3/31/2016 Sb-124 -l.54E+OO 9.60E-01 2.71E+OO u WG W-11 394508004 3/31/2016 Sb-125 -9.40E-Ol 1.12E+OO 3.56E+OO u WG W-11 394508004 3/31/2016 Se-75 2.IOE-01 5.56E-Ol l.75E+OO u WG W-11 394508004 3/31/2016 Th-228 -l.56E+OO 1.41E+OO 2.81E+OO u WG W-11 394508004 3/31/2016 Zn-65 l.67E-01 9.33E-01 2.66E+OO u WG W-11 394508004 3/31/2016 Zr-95 l.23E+OO 7.29E-01 2.36E+OO u WG W-12 394508005 3/31/2016 Ac-228 l.31E+OO 2.78E+OO 6.26E+OO u WG W-12 394508005 3/31/2016 Ag-108m -1.66E-Ol 3.87E-OI l.27E+OO u WG W-12 394508005 3/31/2016 Ag-llOm -l.07E+OO 6.27E-OI 1.79E+OO u WG W-12 394508005 3/31/2016 Ba-140 7.0IE-01 2.02E+OO 6.66E+OO u WG W-12 394508005 3/31/2016 Be-7 7.74E+OO 4.37E+OO l.26E+Ol u WG W-12 394508005 3/31/2016 Ce-141 l.49E+OO 8.52E-OI 2.41E+OO u WG W-12 394508005 3/31/2016 Ce-144 -l.72E+OO 2.80E+OO 9.23E+OO u WG W-12 394508005 3/31/2016 Co-57 -3.90E-01 3.82E-Ol l.23E+OO u WG W-12 394508005 3/31/2016 Co-58 -6.25E-Ol 4.40E-OI 1.32E+OO u WG W-12 394508005 3/31/2016 Co-60 l.69E-02 5.34E-OI l.58E+OO u WG W-12 394508005 3/31/2016 Cr-51 3.49E-Ol 3.91E+OO 1.33E+Ol u WG W-12 394508005 3/31/2016 Cs-134 2.85E-01 4.53E-OI l.53E+OO u WG W-12 394508005 3/31/2016 Cs-137 -7.34E-02 4.81E-01 1.54E+OO u WG W-12 394508005 3/31/2016 Fe-59 l.34E+OO 1.55E+OO 2.96E+OO u WG W-12 394508005 3/31/2016 H-3 -5.80E+02 4.18E+02 l.46E+03 u WG W-12 394508005 3/31/2016 I-131 -2.28E-01 7.13E-01 2.38E+OO u WG W-12 394508005 3/31/2016 K-40 -3.41E+OO 8.84E+OO 2.06E+OI u WG W-12 394508005 3/31/2016 La-140 4.93E-01 7.88E-01 2.63E+OO u WG W-12 394508005 3/31/2016 Mn-54 -2.04E-01 3.97E-01 1.29E+OO u WG W-12 394508005 3/31/2016 Nb-95 2.78E-OI 6.78E-Ol l.58E+OO u WG W-12 394508005 3/31/2016 Ru-103 -5.00E-01 5.48E-Ol 1.50E+OO u WG W-12 394508005 3/31/2016 Ru-106 3.IOE+OO 3.85E+OO 1.25E+Ol u WG W-12 394508005 3/31/2016 Sb-124 -9.66E-01 l.07E+OO 3.27E+OO u WG W-12 394508005 3/31/2016 Sb-125 -l.70E+OO 1.21E+OO 3.68E+OO u WG W-12 394508005 3/31/2016 Se-75 -l.66E-Ol 5.92E-01 1.89E+OO u WG W-12 394508005 3/31/2016 Th-228 l.llE-01 1.43E+OO 2.68E+OO u WG W-12 394508005 3/31/2016 Zn-65 -6. l 7E-Ol 1.lOE+OO 2.97E+OO u WG W-12 394508005 3/31/2016 Zr-95 -8.00E-01 7.63E-Ol 2.41E+OO u WG W-13 394508006 3/31/2016 Ac-228 2.09E+OO 4.15E+OO 7.45E+OO u WG W-13 394508006 3/31/2016 Ag-108m 3.30E-OI 4.77E-Ol l.57E+OO u WG W-13 394508006 3/31/2016 Ag-llOm -3.46E-02 7.42E-OI 2.31E+OO u WG W-13 394508006 3/31/2016 Ba-140 -7.38E+OO 3.lOE+OO 7.87E+OO u WG W-13 394508006 3/31/2016 Be-7 -7.65E+OO 7.27E+OO 1.52E+Ol u WG W-13 394508006 3/31/2016 Ce-141 -6.49E-03 1.53E+OO 3.27E+OO u WG W-13 394508006 3/31/2016 Ce-144 3.91E+OO 3.96E+OO 1.26E+Ol u WG W-13 394508006 3/31/2016 Co-57 6.15E-OI 6.02E-OI 1.68E+OO u WG W-13 394508006 3/31/2016 Co-58 -1.17E+OO

6. I 7E-01 l.67E+OO u WG W-13 394508006 3/31/2016 Co-60 3.70E-02 5.34E-Ol l.76E+OO u WG W-13 394508006 3/31/2016 Cr-51 -7.50E+OO 5.22E+OO l.60E+Ol u WG W-13 394508006 3/31/2016 Cs-134 -5.00E-02 5.84E-OI l.88E+OO u WG W-13 394508006 3/31/2016 Cs-137 -5.70E-02 5.75E-OI l.86E+OO u WG W-13 394508006 3/31/2016 Fe-59 -6.95E-01 l.03E+OO 3.32E+OO u D-117 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-13 394508006 3/31/2016 H-3 3.82E+02 4.36E+02 1.38E+03 u WG W-13 394508006

-3/31/2016 I-131 8.85E-Ol 9.12E-01 3.00E+OO u WG W-13 394508006 3/31/2016 K-40 -2.llE+OO 9.29E+OO 2.30E+Ol u WG W-13 394508006 3/31/2016 La-140 1.35E+OO 8.98E-01 2.91E+OO u WG W-13 394508006 3/31/2016 Mn-54 -6.29E-01 5.12E-01 l.60E+OO u WG W-13 394508006 3/31/2016 Nb-95 -2.63E-01 8.71E-01 l.92E+OO u WG W-13 394508006 3/31/2016 Ru-103 8.43E-01 6.59E-01 l.86E+OO u WG W-13 394508006 3/31/2016 Ru-106 -4.32E+OO 4.95E+OO 1.54E+Ol u WG W-13 394508006 3/31/2016 Sb-124 -2.25E+OO l.44E+OO 4.05E+OO u WG W-13 394508006 3/31/2016 Sb-125 5.86E-Ol l.46E+OO 4.83E+OO u WG W-13 394508006 3/31/2016 Se-75 2.42E-01 6.96E-01 2.33E+OO u WG W-13 394508006 3/31/2016 Th-228 -3.36E+OO l.98E+OO 3.58E+OO u WG W-13 394508006 3/31/2016 Zn-65 -l.16E+OO l.29E+OO 3.45E+OO u WG W-13 394508006 3/31/2016 Zr-95 7.20E-01 l.05E+OO 2.95E+OO u WG W-14 394508007 3/31/2016 Ac-228 -l.78E+OO 3.34E+OO 5.71E+OO u WG W-14 394508007 3/31/2016 Ag-108m 3.13E-02 3.88E-01 1.30E+OO u WG W-14 394508007 3/31/2016 Ag-llOm -5.37E-01 5.97E-Ol l.83E+OO u WG W-14 394508007 3/31/2016 Ba-140 2.61E+OO 2.18E+OO 7.09E+OO u WG W-14 394508007 3/31/2016 Be-7 l.89E+OO 4.21E+OO l.23E+Ol u WG W-14 394508007 3/31/2016 Ce-141 l.49E+OO l.21E+OO 2.51E+OO u WG W-14 394508007 3/31/2016 Ce-144 2.lOE+OO 3.02E+OO 9.95E+OO u WG W-14 394508007 3/3112016 Co-57 4.79E-01 4.07E-01 l.32E+OO u WG W-14 394508007 3/31/2016 Co-58 -l.14E-01 4.35E-Ol 1.39E+OO u WG W-14 394508007 3/31/2016 Co-60 4.34E-01 4.57E-01 l.51E+OO u WG W-14 394508007 3/31/2016 Cr-51 -2.60E+OO 4.38E+OO 1.38E+Ol u WG W-14 394508007 3/31/2016 Cs-134 3.86E-01 4.62E-01 l.50E+OO u WG W-14 394508007 3/31/2016 Cs-137 -1.94E-01 6.16E-01 1.50E+OO u WG W-14 394508007 3/31/2016 Fe-59 -l.20E+OO 9.38E-01 2.85E+OO u WG W-14 394508007 3/31/2016 H-3 8.87E+Ol 4.38E+02 l.43E+03 u WG W-14 394508007 3/31/2016 I-131 -6.17E-01 7.44E-01 2.43E+OO u WG W-14 394508007 3/31/2016 K-40 -6.42E+OO 9.24E+OO l.95E+Ol u WG W-14 394508007 3/31/2016 La-140 6.43E-01 7.22E-01 2.37E+OO u WG W-14 394508007 3/31/2016 Mn-54 -l.16E-01 4.42E-01 1.41E+OO u WG W-14 394508007 3/31/2016 Nb-95 8.45E-01 4.66E-01 1.44E+OO u WG W-14 394508007 3/3112016 Ru-103 -3.63E-01 4.58E-01 l.47E+OO u WG W-14 394508007 3/31/2016 Ru-106 -4.84E+OO 4.04E+OO 1.24E+Ol u WG W-14 394508007 3/31/2016 Sb-124 -5.65E-01 9.98E-01 3.12E+OO u WG W-14 394508007 3/31/2016 Sb-125 1.73E-01 1.18E+OO 3.95E+OO u WG W-14 394508007 3/31/2016 Se-75 8.95E-01 6.68E-01 2.09E+OO u WG W-14 394508007 3/31/2016 Th-228 4.63E-01 1.30E+OO 2.75E+OO u WG W-14 394508007 3/31/2016 Zn-65 2.61E-01 9.95E-01 2.87E+OO u WG W-14 394508007 3/31/2016 Zr-95 6.03E-01 7.79E-01 2.54E+OO u WG MW-20 394508008 3/31/2016 Ac-228 6.03E+OO 2.54E+OO 7.42E+OO u WG MW-20 394508008 3/31/2016 Ag-108m -7.09E-01 4.79E-01 1.45E+OO u WG MW-20 394508008 3/31/2016 Ag-llOm 3.92E-01 7.35E-01 2.44E+OO u WG MW-20 394508008 3/31/2016 Ba-140 -l.67E+OO 2.57E+OO 8.18E-t;OO u WG MW-20 394508008 3/31/2016 Be-7 -6.53E-01 4.39E+OO l.45E+Ol u WG MW-20 394508008 3/31/2016 Ce-141 2.95E+OO 1.12E+OO 2.78E+OO UI WG MW-20 394508008 3/31/2016 Ce-144 -l.06E+OO 2.94E+OO 9.90E+OO u WG MW-20 394508008 3/31/2016 Co-57 5.57E-01 4.28E-01 1.31E+OO u D-118 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG MW-20 394508008 3/31/2016 Co-58 3.14E-01 5.52E-01 l.84E+OO u WG MW-20 394508008 3/3112016 Co-60 -8.59E-02 5.87E-01 l.93E+OO u WG MW-20 394508008 3/31/2016 Cr-51 2.69E+OO 5.14E+OO 1.60E+Ol u WG MW-20 394508008 3/3112016 Cs-134 7.70E-01 6.07E-01 l.99E+OO u WG MW-20 394508008 3/31/2016 Cs-137 5.64E-02 5.65E-01 l.83E+OO u WG MW-20 394508008 3/3112016 Fe-59 5.27E-01 l.13E+OO 3.67E+OO u WG MW-20 394508008 3/3112016 H-3 3.08E+02 4.47E+02 1.42E+03 u WG MW-20 394508008 3/3112016 1-131 l.64E-01 8.27E-01 2.79E+OO u WG MW-20 394508008 3/3112016 K-40 6.21E+OO 1.17E+Ol l.79E+Ol u WG MW-20 394508008 3/3112016 La-140 8.33E-01 8.99E-01 2.96E+OO u WG MW-20 394508008 3/3112016 Mn-54 -3.69E-01 5.35E-01 l.72E+OO u WG MW-20 394508008 3/31/2016 Nb-95 6.98E-01 5.41E-01 l.78E+OO u WG MW-20 394508008 3/31/2016 Ru-103 1.13E+OO 6.71E-01 l.85E+OO u WG MW-20 394508008 3/31/2016 Ru-106 -l.52E+OO 4.73E+OO 1.52E+Ol u WG MW-20 394508008 3/3112016 Sb-124 -:2.55E+OO 2.42E+OO 4.29E+OO u WG MW-20. 394508008 3/31/2016 Sb-125 l.67E-01 1.40E+OO 4.66E+OO u WG MW-20 394508008 3/31/2016 Se-75 1.19E+OO 7.25E-01 2.24E+OO u WG MW-20 394508008 3/3112016 Th-228 2.08E+OO l.87E+OO 2.89E+OO u WG MW-20 394508008 3/31/2016 Zn-65 4.50E-01 l.29E+OO 3.62E+OO u WG MW-20 394508008 3/31/2016 Zr-95 -7.90E-01 9.53E-01 3.05E+OO u WG MW-21 394508009 3/3112016 Ac-228 -2.51E+OO 3.13E+OO 5.97E+OO u WG MW-21 394508009 3/31/2016 Ag-108m -2.00E+OO 7.68E-01 l.25E+OO u WG MW-21 394508009 3/31/2016 Ag-llOm 2.06E-01 5.69E-01 1.86E+OO u WG MW-21 394508009 3/3112016 Ba-140 -2.93E+OO 2.lOE+OO 6.47E+OO u WG MW-21 394508009 3/3112016 Be-7 4.48E+OO 3.96E+OO 1.25E+Ol u WG MW-21 394508009 3/31/2016 Ce-141 2.88E-01 8.0lE-01 2.55E+OO u WG MW-21 394508009 3/3112016 Ce-144 -4.92E+OO 4.03E+OO 9.40E+OO u WG MW-21 394508009 3/3112016 Co-57 1.12E+OO 4.61E-Ol 1.26E+OO u WG MW-21 394508009 3/31/2016 Co-58 4.43E-01 4.28E-01 l.39E+OO u WG MW-21 394508009 3/31/2016 Co-60 3.57E-01 4.60E-01 1.52E+OO u WG MW-21 394508009 3/31/2016 Cr-51 -3.65E+OO 4.55E+OO 1.34E+Ol u WG MW-21 394508009 3/31/2016 Cs-134 3.86E-01 4.71E-01 l.54E+OO u WG MW-21 394508009 3/31/2016 Cs-137 -4.90E-01 5.42E-01 l.48E+OO u WG MW-21 394508009 3/31/2016 Fe-59 -7.25E-01 8.27E-01 2.63E+OO u WG MW-21 394508009 3/31/2016 H-3 -8.71E+Ol 4.38E+02 l.45E+03 u WG MW-21 394508009 3/31/2016 1-131 -5.64E-01 7.81E-Ol 2.47E+OO u WG MW-21 394508009 3/3112016 K-40 -2.05E+Ol 1.05E+Ol l.92E+Ol u WG MW-21 394508009 3/3112016 La-140 l.20E+OO 7.27E-01 2.32E+OO u WG MW-21 394508009 3/3112016 Mn-54 -5.00E-01 5.03E-01 1.32E+OO u WG MW-21 394508009 3/31/2016 Nb-95 1.09E+OO 5.55E-01 1.50E+OO u WG MW-21 394508009 3/3112016 Ru-103 -6.80E-01 4.80E-Ol l.49E+OO u WG MW-21 394508009 3/3112016 Ru-106 -3.28E+OO 4.58E+OO 1.28E+Ol u WG MW-21 394508009 3/3112016 Sb-124 -1.51E-02 9.74E-01 3.26E+OO u WG MW-21 394508009 3/31/2016 Sb-125 -1.81E+OO 1.28E+OO 3.78E+OO u WG MW-21 394508009 3/31/2016 Se-75 -6.69E-01 6.12E-01 l.93E+OO u WG MW-21 394508009 3/31/2016 Th-228 4.62E-01 1.65E+OO 2.57E+OO u WG MW-21 394508009 3/31/2016 Zn-65 1.91E-01 1.0lE+OO 2.91E+OO u WG MW-21 394508009 3/31/2016 Zr-95 -7.70E-01 1.24E+OO 2.48E+OO u WG W-1 394957001 417/2016 Ac-228 1.91E+OO 4.79E+OO l.66E+Ol u WG W-1 394957001 417/2016 Ag-108m 1.29E+OO 1.06E+OO 3.66E+OO u D-119 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-1 394957001 417/2016 Ag-llOm -8.71E-Ol 1.67E+OO 5.22E+OO u WG W-1 394957001 417/2016 Ba-140 l.39E+Ol 6.18E+OO 2.08E+OI u WG W-1 394957001 417/2016 Be-7 9.84E+OO 1.03E+OI 3.34E+Ol u WG W-1 394957001 417/2016 Ce-141 -2.92E+OO 2.13E+OO 6.30E+OO u WG W-1 394957001 417/2016 Ce-144 l.22E+OI 8.14E+OO 2.72E+Ol u WG W-1 394957001 417/2016 Co-57 5.68E-Ol l.llE+OO 3.79E+OO u WG W-1 394957001 417/2016 Co-58 -2.75E+OO 1.41E+OO 3.35E+OO u WG W-1 394957001 417/2016 Co-60 -4.19E-Ol 1.36E+OO 4.41E+OO u WG W-1 394957001 417/2016 Cr-51 3.94E-Ol l.13E+Ol 3.85E+Ol u WG W-1 394957001 417/2016 Cs-134 -4.38E-Ol 1.14E+OO 3.67E+OO u WG W-1 394957001 417/2016 Cs-137 -3.37E-Ol l.33E+OO 4.19E+OO u WG W-1 394957001 417/2016 Fe-59 -l.30E+OO 2.35E+OO 7.08E+OO u WG W-1 394957001 417/2016 H-3 -1.00E+02 4.35E+02 1.45E+03 u WG W-1 394957001 417/2016 I-131 7.90E-Ol 2.13E+OO 7.32E+OO u WG W-1 394957001 417/2016 K-40 1.60E+Ol l.34E+Ol 3.lOE+OI u WG W-1 394957001 417/2016 La-140 2.62E+OO 2.25E+OO 8.09E+OO u WG W-1 394957001 417/2016 Mn-54 1.54E+OO 7.lOE-01 3.45E+OO u WG W-1 394957001 417/2016 Nb-95 -4.71E-02 l.33E+OO 4.41E+OO u WG W-1 394957001 417/2016 Ru-103 -3.81E-01 1.44E+OO 4.03E+OO u WG W-1 394957001 417/2016 Ru-106 -7.99E+OO l.03E+Ol 3.04E+Ol u WG W-1 394957001 417/2016 Sb-124 6.14E-Ol 3.77E+OO 1.25E+Ol u WG W-1 394957001 417/2016 Sb-125 -4.35E+OO 3.28E+OO 9.34E+OO u WG W-1 394957001 417/2016 Se-75 -1.72E+OO 1.79E+OO 5.28E+OO u WG W-1 394957001 417/2016 Th-228 -5.71E-01 2.94E+OO 8.59E+OO u WG W-1 394957001 417/2016 Zn-65 -3.67E-OI 2.64E+OO 8.46E+OO u WG W-1 394957001 417/2016 Zr-95 2.94E+OO 2.28E+OO 8.05E+OO u WG W-8 394957002 417/2016 Ac-228 l.13E+Ol 6.63E+OO 1.52E+OI u WG W-8 394957002 417/2016 Ag-108m 1.97E+OO 1.25E+OO 4.18E+OO u WG W-8 394957002 417/2016 Ag-llOm -4.92E-Ol 1.82E+OO 5.85E+OO u WG W-8 394957002 417/2016 Ba-140 7.94E+OO 6.60E+OO 2.22E+Ol u WG W-8 394957002 417/2016 Be-7 -1.00E+OO 1.04E+OI 2.94E+OI u WG W-8 394957002 417/2016 Ce-141 -l.63E+OO 2.29E+OO 7.16E+OO u WG W-8 394957002 417/2016 Ce-144 7.38E+OO 8.79E+OO 2.91E+Ol u WG W-8 394957002 417/2016 Co-57 1.63E+OO 1.16E+OO 3.80E+OO u WG W-8 394957002 417/2016 Co-58 3.15E-02 l.21E+OO 4.0IE+OO u WG W-8 394957002 417/2016 Co-60 4.93E-01 l.29E+OO 4.45E+OO u WG W-8 394957002 417/2016 Cr-51 -1.IOE+OI 1.48E+Ol 4. lOE+OI u WG W-8 394957002 417/2016 Cs-134 5.lOE-01 l.16E+OO 3.98E+OO u WG W-8 394957002 417/2016 Cs-137 6.0IE-01 l.85E+OO 2.72E+OO u WG W-8 394957002 417/2016 Fe-59 3.06E+OO 2.36E+OO 8.29E+OO u WG W-8 394957002 417/2016 H-3 l.41E+02 4.29E+02 l.39E+03 u WG W-8 394957002 417/2016 I-131 -1.62E+OO 2.16E+OO 6.77E+OO u WG W-8 394957002 417/2016 K-40 -8.16E+OO 1.72E+OI 5.46E+Ol u WG W-8 394957002 417/2016 La-140 -3.46E+OO 2.44E+OO 6.18E+OO u WG W-8 394957002 417/2016 Mn-54 l.18E+OO 1.1 IE+OO 3.88E+OO u WG W-8 394957002 417/2016 Nb-95 1.96E-Ol 1.22E+OO 4.llE+OO u WG W-8 394957002 417/2016 Ru-103 -2.21E+OO 1.27E+OO 3.16E+OO u WG W-8 394957002 417/2016 Ru-106 l.02E+OO 1.14E+Ol 3.86E+OI u WG W-8 394957002 417/2016 Sb-124 -l.36E+OO 3.02E+OO 9.15E+OO u WG W-8 394957002 417/2016 Sb-125 2.43E+OO 3.34E+OO l.13E+OI u D-120 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-8 394957002 417/2016 Se-75 -1.23E+OO l.87E+OO 6.09E+OO u WG W-8 394957002 417/2016 Th-228 3.80E+OO 3.71E+OO 9.78E+OO u WG W-8 394957002 417/2016 Zn-65 2.02E+OO 2.94E+OO 8.88E+OO u WG W-8 394957002 417/2016 Zr-95 5.42E+OO 2.59E+OO 8.27E+OO u WG W-9 394957003 417/2016 Ac-228 l.82E+Ol 7.68E+OO 2.16E+Ol u WG W-9 394957003 417/2016 Ag-108m 3.67E-Ol l.29E+OO 4.36E+OO u WG W-9 394957003 417/2016 Ag-llOm l.97E+OO 2.18E+OO 7.49E+OO u WG W-9 394957003 417/2016 Ba-140 3.63E-01 7.03E+OO 2.31E+Ol u WG W-9 394957003 417/2016 Be-7 -l.46E+Ol l.43E+Ol 4.32E+Ol u WG W-9 394957003 417/2016 Ce-141 l.67E+OO 2.98E+OO 8.43E+OO u WG W-9 394957003 417/2016 Ce-144 9.SOE+OO 9.lOE+OO 3.09E+OI u WG W-9 394957003 417/2016 Co-57 -1.0SE+OO 1.12E+OO 3.32E+OO u WG W-9 394957003 417/2016 Co-58 1.17E+OO l.60E+OO 4.72E+OO u WG W-9 394957003 417/2016 Co-60 3.78E+OO l.79E+OO 6.69E+OO u WG W-9 394957003 417/2016 Cr-51 7.07E+OO l.43E+OI 4.68E+OI u WG W-9 394957003 417/2016 Cs-134 1.67E+OO 2.00E+OO 6.45E+OO u WG W-9 394957003 417/2016 Cs-137 l.80E+OO 1.12E+OO 4.56E+OO u WG W-9 394957003 417/2016 Fe-59 2.58E+OO 3.44E+OO 1.16E+Ol u WG W-9 394957003 417/2016 H-3 8.95E+Ol 4.44E+02 1.45E+03 u WG W-9 394957003 417/2016 I-131 2.89E-OI 2.73E+OO 9.24E+OO u WG W-9 394957003 417/2016 K-40 -l.40E+OO 1.96E+OI 6.56E+Ol u WG W-9 394957003 417/2016 La-140 -2.97E+OO 2.24E+OO 5.42E+OO u WG W-9 394957003 417/2016 Mn-54 -3.65E-01 l.31E+OO 4.24E+OO u WG W-9 394957003 417/2016 Nb-95 -2.06E+OO 1.77E+OO 4.71E+OO u WG W-9 394957003 417/2016 Ru-103 -5.00E+OO 2.00E+OO 4.28E+OO u WG W-9 394957003 417/2016 Ru-106 8.75E+OO 1.42E+Ol 4.74E+OI u WG W-9 394957003 417/2016 Sb-124 -2.77E+OO 3.31E+OO 9.59E+OO u WG W-9 394957003 417/2016 Sb-125 -l.99E+OO . 3.73E+OO l.19E+Ol u WG W-9 394957003 417/2016 Se-75 2.54E-01 2.06E+OO 6.75E+OO u WG W-9 394957003 417/2016 Th-228 -2.31E+OO 3.lOE+OO 9.06E+OO u WG W-9 394957003 417/2016 Zn-65 -6.0lE+OO 4.35E+OO 1.17E+Ol u WG W-9 394957003 417/2016 Zr-95 -8.75E-01 3.15E+OO 1.03E+OI u WG W-15 394957004 417/2016 Ac-228 -5.68E+OO 5.47E+OO l.66E+Ol u WG W-15 394957004 417/2016 Ag-108m -3.07E-Ol 1.12E+OO 3.54E+OO u WG W-15 394957004 417/2016 Ag-llOm -4.69E-01 1.85E+OO 5.86E+OO u WG W-15 394957004 417/2016 Ba-140 -4.28E+OO 6.43E+OO l.74E+Ol u WG W-15 394957004 417/2016 Be-7 -2.48E+OO l.17E+Ol 3.70E+Ol u WG W-15 394957004 417/2016 Ce-141 4.65E+OO 2.67E+OO 7.27E+OO u WG W-15 394957004 417/2016 Ce-144 -3.0lE+OO 8.79E+OO 2.76E+Ol u WG W-15 394957004 417/2016 Co-57 l.75E+OO l.24E+OO 3.93E+OO u WG W-15 394957004 417/2016 Co-58 -2.37E+OO l.45E+OO 3.81E+OO u WG W-15 394957004 417/2016 Co-60 -6.49E-01 l.33E+OO 4.15E+OO u WG W-15 394957004 417/2016 Cr-51 -6.74E+OO l.29E+Ol 4.IOE+Ol u WG W-15 394957004 417/2016 Cs-134 l.OSE+OO l.47E+OO 4.95E+OO u WG W-15 394957004 417/2016 Cs-137 l.31E+OO l.36E+OO 4.66E+OO u WG W-15 394957004 417/2016 Fe-59 3.26E+OO 2.58E+OO 8.99E+OO u WG W-15 394957004 417/2016 H-3 9.18E+Ol 4.45E+02 l.45E+03 u WG W-15 394957004 417/2016 I-131 -3.75E+OO 2.44E+OO 6.81E+OO u WG W-15 394957004 417/2016 K-40 2.32E+OI l.50E+OI 3.53E+OI u WG W-15 394957004 417/2016 La-140 -3.78E-OI l.97E+OO 6.24E+OO u 0-121 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-15 394957004 417/2016 Mn-54 l.79E+OO l.23E+OO 4.19E+OO u WG W-15 394957004 417/2016 Nb-95 1.30E+OO l.17E+OO 4.0lE+OO u WG W-15 394957004 417/2016 Ru-103 l.58E-01 l.13E+OO 3.37E+OO u WG W-15 394957004 417/2016 Ru-106 -l.48E+OO l.24E+Ol 3.71E+Ol u WG W-15 394957004 417/2016 Sb-124 3.36E-02 3.09E+OO l.04E+Ol u WG W-15 394957004 417/2016 Sb-125 -4.99E+OO 3.40E+OO 9.28E+OO u WG W-15 394957004 417/2016 Se-75 l.79E+OO l.63E+OO 5.46E+OO U WG W-15 394957004 417/2016 Th-228 4.16E+OO 3.02E+OO 6.97E+OO U WG W-15 394957004 417/2016 Zn-65 3.06E+OO 3.02E+OO 1.04E+Ol U WG W-15 394957004 417/2016 Zr-95 8.96E+OO 3.32E+OO 7.71E+OO UI WG SG-1 394957005 417/2016 Ac-228 -l.42E+Ol 7.97E+OO 2.lOE+Ol U WG SG-1 394957005 417/2016 Ag-108m -8.74E-01 l.54E+OO 4.05E+OO U WG SG-1 394957005 417/2016 Ag-llOm -4.03E+OO 2.58E+OO 6.82E+OO U WG SG-1 394957005 417/2016 ALPHA l.13E+OO l.45E+OO 4.36E+OO U DL WG SG-1 394957005 417/2016 Ba-140 -1.92E+OO 7.72E+OO 2.56E+Ol U WG SG-1 394957005 417/2016 Be-7 -l.03E-01 l.39E+Ol 4.45E+Ol U WG SG-1 394957005 417/2016 BETA 9.90E+OO l.60E+OO 3.83E+OO WG SG-1 394957005 417/2016 Ce-141 l.85E+OO 2.78E+OO 9.65E+OO u WG SG-1 394957005 417/2016 Ce-144 l.OlE+Ol l.lOE+Ol 3.75E+Ol u WG SG-1 394957005 417/2016 Co-57 -3.14E-02 l.42E+OO 4.80E+OO u WG SG-1 394957005 417/2016 Co-58 7.71E-Ol l.58E+OO 5.39E+OO u WG SG-1 394957005 417/2016 Co-60 -3.28E+OO l.91E+OO 4.87E+OO u WG SG-1 394957005 417/2016 Cr-51 -7.44E+OO l.57E+Ol 4.97E+Ol u WG SG-1 394957005 417/2016 Cs-134 -l.86E+OO l.70E+OO 4.91E+OO u WG SG-1 394957005 417/2016 Cs-137 -l.55E+OO l.93E+OO 4.99E+OO u WG SG-1 394957005 417/2016 Fe-59 -4.45E+OO 3.40E+OO 8.88E+OO u WG SG-1 394957005 417/2016 H-3 4.05E+02 4.61E+02 l.45E+03 u WG SG-1 394957005 417/2016 I-131 2.05E+OO 2.77E+OO 9.27E+OO u WG SG-1 394957005 417/2016 K-40 3.19E+Ol 2.05E+Ol 4.73E+Ol u WG SG-1 394957005 417/2016 La-140 -2.97E+OO 2.81E+OO 7.83E+OO u WG SG-1 394957005 417/2016 Mn-54 -1.84E+OO l.58E+OO 4.48E+OO u WG SG-1 394957005 417/2016 Nb-95 1.38E+OO 1.69E+OO 5.82E+OO u WG SG-1 394957005 417/2016 Ru-103 -3.15E+OO l.87E+OO 4.77E+OO u WG SG-1 394957005 417/2016 Ru-106 -4.64E+OO l.35E+Ol 4.41E+Ol u WG SG-1 394957005 417/2016 Sb-124 2.85E+OO 4.54E+OO l.58E+Ol u WG SG-1 394957005 417/2016 Sb-125 -3.84E+OO 4.50E+OO 1.34E+Ol u WG SG-1 394957005 417/2016 Se-75 7.59E-01 2.06E+OO 6.88E+OO u WG SG-1 394957005 4/7/2016 Th-228 7.08E+OO 5.12E+OO l.09E+Ol u WG SG-1 394957005 4/7/2016 Zn-65 -1.lOE+OO 3.68E+OO l.16E+Ol u WG SG-1 394957005 4/7/2016 Zr-95 9.89E-01 2.76E+OO 9.39E+OO u WG SG-2 394957006 4/7/2016 Ac-228 8.99E+OO 6.74E+OO 2.33E+Ol u WG SG-2 394957006 4/7/2016 Ag-108m -5.75E-Ol 1.28E+OO 4.04E+OO u WG SG-2 394957006 4/7/2016 Ag-llOm -1.30E-01 l.89E+OO 6.15E+OO u WG SG-2 394957006 4/7/2016 ALPHA -8.24E-01 l.OOE+OO 3.50E+OO u WG SG-2 394957006 4/7/2016 Ba-140 3.77E+OO 7.29E+OO 2.42E+Ol u WG SG-2 394957006 4/7/2016 Be-7 9.56E+OO l.29E+Ol 4.34E+Ol u WG SG-2 394957006 4/7/2016 BETA 5.30E+OO l.28E+OO 3.52E+OO WG SG-2 394957006 4/7/2016 Ce-141 -8.69E-01 2.33E+OO 7.42E+OO u WG SG-2 394957006 417/2016 Ce-144 -2.19E+OO 9.lOE+OO 2.94E+Ol u WG SG-2 394957006 4/7/2016 Co-57 -2.03E-Ol 1.25E+OO 4.07E+OO u D-122 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-2 394957006 417/2016 Co-58 2.30E-01 l.40E+OO 4.68E+OO u WG SG-2 394957006 417/2016 Co-60 -l.59E+OO l.51E+OO 4.16E+OO u WG SG-2 394957006 417/2016 Cr-51 -5.02E+OO 1.39E+Ol 4.54E+Ol u WG SG-2 394957006 417/2016 Cs-134 -8.24E-01 1.31E+OO 3.99E+OO u WG SG-2 394957006 417/2016 Cs-137 -2.03E+OO l.41E+OO 3.81E+OO u WG SG-2 394957006 417/2016 Fe-59 -2.45E+o0 3.03E+OO 8.39E+OO u WG SG-2 394957006 417/2016 H-3 -6.01E+02 4.12E+02 l.45E+03 u WG SG-2 394957006 417/2016 I-131 3.41E-Ol 2.86E+OO 8.36E+OO u WG SG-2 394957006 417/2016 K-40 L27E+Ol l.91E+Ol 6.85E+Ol u WG SG-2 394957006 417/2016 La-140 l.91E+OO 2.33E+OO 8.27E+OO u WG SG-2 394957006 417/2016 Mn-54 2.18E+OO l.76E+OO 5.65E+OO u WG SG-2 394957006 417/2016 Nb-95 2.92E-01 l.42E+OO 4.76E+OO u WG SG-2 394957006 417/2016 Ru-103 6.92E-01 l.32E+OO 4.40E+OO u WG SG-2 394957006 417/2016 Ru-106 -3.91E+OO Ll3E+Ol 3.69E+Ol u WG SG-2 394957006 417/2016 Sb-124 -7.45E-01 4.66E+OO 1.48E+Ol u WG SG-2 394957006 417/2016 Sb-125 -2.62E+OO 4.17E+OO 1.29E+Ol u WG SG-2 394957006 417/2016 Se-75 -1.43E+OO l.80E+OO 5.71E+OO u WG SG-2 394957006 417/2016 Th-228 3.80E+OO 3.20E+OO l.OlE+Ol u WG SG-2 394957006 417/2016 Zn-65 -6.33E+OO 3.64E+OO 9.07E+OO u WG SG-2 394957006 417/2016 Zr-95 -3.19E+OO 2.84E+OO 8.18E+OO u WG SG-4 394957007 417/2016 Ac-228 2.54E+OO 5.92E+OO 1.99E+Ol u WG SG-4 394957007 417/2016 Ag-108m -l.03E+OO l.41E+OO 4.33E+OO u WG SG-4 394957007 417/2016 Ag-llOm -8.41E-Ol l.74E+OO 5.39E+OO u WG SG-4 394957007 417/2016 ALPHA l.72E+OO l.20E+OO 3.39E+OO u WG SG-4

394957007 417/2016 Ba-140 8.51E-01 6.50E+OO 2.IOE+Ol u WG SG-4 394957007 417/2016 Be-7 4.24E+OO 1.04E+Ol 3.43E+Ol u WG SG-4 394957007 417/2016 BETA 6.63E+OO Ll8E+OO 2.76E+OO WG SG-4 394957007 417/2016 Ce-141 6.12E-01 2.76E+OO 8.02E+OO u WG SG-4 394957007 417/2016 Ce-144 -3.51E+Ol l.27E+Ol 2.71E+Ol u WG SG-4 394957007 417/2016 Co-57 -2.78E-01 l.19E+OO 3.84E+OO u WG SG-4 394957007 417/2016 Co-58 -5.22E-03 1.30E+OO 4.26E+OO u WG SG-4 394957007 417/2016 Co-60 -2.58E+OO l.51E+OO 3.28E+OO u WG SG-4 394957007 417/2016 Cr-51 7.32E+OO l.25E+Ol 4.22E+Ol u WG SG-4 394957007 417/2016 Cs-134 -6.94E-01 l.27E+OO 3.93E+OO u WG SG-4 394957007 417/2016 Cs-137 1.92E+OO 1.34E+OO 4.48E+OO u WG SG-4 394957007 417/2016 Fe-59 8.88E-01 2.69E+OO 9.04E+OO u WG SG-4 394957007 417/2016 H-3 -2.56E+02 4.28E+02 l.45E+03 u WG SG-4 394957007 417/2016 I-131 -3.45E+OO 2.59E+OO 7.51E+OO u WG SG-4 394957007 417/2016 K-40 -2.84E+Ol l.78E+Ol 5.00E+Ol u WG SG-4 394957007 417/2016 La-140 1.78E+OO 2.43E+OO 8.38E+OO u WG SG-4 394957007 417/2016 Mn-54 -6.91E-01 1.35E+00 4.21E+OO u WG SG-4 394957007 417/2016 Nb-95 1.39E+OO l.34E+OO 4.19E+OO u WG SG-4 394957007 417/2016 Ru-103 -1.90E-01 1.35E+OO 4.29E+OO u WG SG-4 394957007 417/2016 Ru-106 1.05E+Ol l.13E+Ol 3.94E+Ol u WG SG-4 394957007 417/2016 Sb-124 1.83E+OO 3.67E+OO 1.28E+Ol u WG SG-4 394957007 417/2016 Sb-125 -3.75E+OO 3.77E+OO 1.12E+Ol u WG SG-4 394957007 417/2016 Se-75 1.16E+OO l.96E+OO 6.67E+OO u WG SG-4 394957007 417/2016 Th-228 7.54E-Ol 3.50E+OO 8.54E+OO u WG SG-4 394957007 417/2016 Zn-65 -3.53E-Ol 3.06E+OO 8.67E+OO u WG SG-4 394957007 417/2016 Zr-95 4.99E+OO 2.57E+OO 8.74E+OO u D-123 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-5 394957008 417/2016 Ac-228 -l.12E+Ol 5.59E+OO l.34E+Ol u WG SG-5 394957008 417/2016 Ag-108m 4.84E-01 9.43E-Ol 3.19E+OO u WG SG-5 394957008 417/2016 Ag-llOm 3.20E-Ol 1.41E+OO 4.78E+OO u WG SG-5 394957008 417/2016 ALPHA l.68E+OO 1.17E+OO 3.llE+OO u WG SG-5 394957008 417/2016 Ba-140 3.42E+OO 5.95E+OO l.99E+Ol u WG SG-5 394957008 417/2016 Be-7 -9.64E+OO l.15E+Ol 3.27E+Ol u WG SG-5 394957008 417/2016 BETA 7.42E+OO l.34E+OO 2.99E+OO WG SG-5 394957008 417/2016 Ce-141 l.37E+OO 2.03E+OO 6.64E+OO u WG SG-5 394957008 417/2016 Ce-144 2.18E+OO 7.75E+OO 2.53E+Ol u WG SG-5 394957008 417/2016 Co-57 5.06E-Ol l.08E+OO 3.54E+OO u WG SG-5 394957008 417/2016 Co-58 -3.74E-Ol l.17E+OO 3.79E+OO u WG SG-5 394957008 417/2016 Co-60 -9.90E-01 l.15E+OO 3.21E+OO u WG SG-5 394957008 417/2016 Cr-51 -l.63E+OO l.15E+Ol 3.80E+Ol u WG SG-5 394957008 417/2016 Cs-134 8.44E-Ol l.19E+OO 4.07E+OO u WG SG-5 394957008 417/2016 Cs-137 -5.03E-02 l.15E+OO 3.68E+OO u WG SG-5 394957008 417/2016 Fe-59 -2.86E-03 2.28E+OO 7.48E+OO u WG SG-5 394957008 417/2016 H-3 -l.39E+02 4.36E+02 l.45E+03 u WG SG-5 394957008 417/2016 I-131 -2.70E+OO 2.12E+OO 6.21E+OO u WG SG-5 394957008 4/7/2016 K-40 l.71E+Ol 2.13E+Ol 4.05E+Ol u WG SG-5 394957008 417/2016 La-140 -5.04E+OO 2.09E+OO 3.05E+OO u WG SG-5 394957008 4/7/2016 Mn-54 -3.17E-01 l.lOE+OO 3.06E+OO u WG SG-5 394957008 4/7/2016 Nb-95 8.25E-Ol l.08E+OO 3.80E+OO u WG SG-5 394957008 417/2016 Ru-103 -l.71E+OO l.37E+OO 3.89E+OO u WG SG-5 394957008 4/7/2016 Ru-106 -6.34E+OO 1.16E+Ol 3.54E+Ol u WG SG-5 394957008 417/2016 Sb-124 8.19E-Ol 2.32E+OO 8.07E+OO u WG SG-5 394957008 4/7/2016 Sb-125 4.75E-03 2.83E+OO 9.32E+OO u WG SG-5 394957008 4/7/2016 Se-75 -1.0lE+OO l.56E+OO 5.04E+OO u WG SG-5 394957008 417/2016 Th-228 l.13E+OO 2.07E+OO 6.70E+OO u WG SG-5 394957008 4/7/2016 Zn-65 -3.31E+OO 2.92E+OO 6.73E+OO u WG SG-5 394957008 4/7/2016 Zr-95 -l.08E+OO l.99E+OO 6.34E+OO u WG W-2 395506001 4/14/2016 Ac-228 -1.llE+Ol 6.59E+OO l.85E+Ol u WG W-2 395506001 4/14/2016 Ag-108m 9.27E-Ol l.49E+OO 4.54E+OO u WG W-2 395506001 4/14/2016 Ag-llOm 2.45E-Ol l.90E+OO 6.40E+OO u WG W-2

395506001 4/14/2016 Ba-140 -2.07E+Ol 8.38E+OO l.60E+Ol u WG W-2 395506001 4/14/2016 Be-7 3.75E+OO 1.51E+Ol 4.46E+Ol u WG W-2 395506001 4/14/2016 Ce-141 l.79E-Ol 2.75E+OO 9.29E+OO u WG W-2 395506001 4/14/2016 Ce-144 2.09E+Ol l.22E+Ol 3.63E+Ol u WG W-2 395506001 4/14/2016 Co-57 -l.37E+OO l.37E+OO 4.39E+OO u WG W-2 395506001 4/14/2016 Co-58 -2.22E-Ol l.55E+OO 5.15E+OO u WG W-2 395506001 4/14/2016 Co-60 -2.86E+OO l.98E+OO 4.82E+OO u WG W-2 395506001 4/14/2016 Cr-51 l.14E+Ol l.70E+Ol 4.98E+Ol u WG W-2 395506001 4/14/2016 Cs-134 6.86E-01 l.99E+OO 5.96E+OO u WG W-2 395506001 4/14/2016 Cs-137 3.25E+OO l.77E+OO 5.53E+OO u WG W-2 395506001 4/14/2016 Fe-59 2.39E+OO 2.91E+OO l.OlE+Ol u WG W-2 395506001 4/14/2016 H-3 l.54E+02 4.20E+02 l.36E+03 u WG W-2 395506001 4/14/2016 I-131 l.44E+OO 2.53E+OO 8.33E+OO u WG W-2 395506001 4/14/2016 K-40 3.97E+OO l.86E+Ol 5.03E+Ol u WG W-2 395506001 4/14/2016 La-140 -2.96E+OO 2.30E+OO 5.83E+OO u WG W-2 395506001 4/14/2016 Mn-54 l.30E+OO l.43E+OO 5.0lE+OO u WG W-2 395506001 4/14/2016 Nb-95 4.91E+OO 2.18E+OO 6.97E+OO u D-124 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-2 395506001 4/14/2016 Ru-103 -2.53E+OO l.66E+OO 4.61E+OO u WG W-2 395506001 4/14/2016 Ru-106 -l.28E+Ol 1.30E+Ol 3.80E+Ol u WG W-2 395506001 4/14/2016 Sb-124 l.17E+OO 3.87E+OO 1.32E+Ol u WG W-2 395506001 4/14/2016 Sb-125 -8.43E-01 6.09E+OO l.38E+Ol u WG W-2 395506001 4/14/2016 Se-75 1.41E+OO 2.54E+OO 7.45E+OO u WG W-2 395506001 4/14/2016 Th-228 2.21E+OO 5.18E+OO 1.22E+Ol u WG W-2 395506001 4/14/2016 Zn-65 6.0IE+OO 2.40E+OO 8.85E+OO u WG W-2 395506001 4/14/2016 Zr-95 1.34E+OO 2.20E+OO 7.46E+OO u WG W-4 395506002 4/14/2016 Ac-228 6. l IE-01 5.65E+OO 1.70E+Ol u WG W-4 395506002 4/14/2016 Ag-108m 6.05E-01 1.03E+OO 3.54E+OO u WG W-4 395506002 4/14/2016 Ag-llOm -2.86E+OO 1.8IE+OO 4.66E+OO u WG W-4 395506002 4114/2016 Ba-140 -8.33E+OO 6.37E+OO 1.78E+Ol u WG W-4 395506002 4/14/2016 Be-7 l.79E+OO 1.13E+Ol 3.75E+Ol u WG W-4 395506002 4/14/2016 Ce-141 2.77E+OO 2.33E+OO 7.82E+OO u WG W-4 395506002 4/14/2016 Ce-144 -l.22E+Ol 8.83E+OO 2.64E+Ol u WG W-4 395506002 4/14/2016 Co-57 -8.22E-dl l.09E+OO 3.52E+OO u WG W-4 395506002 4/14/2016 Co-58 3.73E+OO l.30E+OO 3.08E+OO UI WG W-4 395506002 4/14/2016 Co-60 9.98E-03 1.35E+OO 4.52E+OO u WG W-4 395506002 4/14/2016 Cr-51 1.32E+OO l.07E+Ol 3.66E+Ol u WG W-4 395506002 4/14/2016 Cs-134 -2.46E-02 l.57E+OO 4.38E+OO u WG W-4 395506002 4/14/2016 Cs-137 2.60E-01 l.28E+OO 3.97E+OO u WG W-4 395506002 4114/2016 Fe-59 -2.15E+OO 2.97E+OO 8.88E+OO u WG W-4 395506002 4/14/2016 H-3 2.37E+02 3.94E+02 1.26E+03 u WG W-4 395506002 4/14/2016 I-131 -l.56E+OO l.95E+OO 6.l3E+OO u WG W-4 395506002 4/14/2016 K-40 3.34E+Ol l.62E+Ol 4.16E+Ol u WG W-4 395506002 4/14/2016 La-140 -8.08E-Ol 2.25E+OO 7.07E+OO u WG W-4 395506002 4/14/2016 Mn-54 l.05E+OO l.19E+OO 4.18E+OO u WG W-4 395506002 4/14/2016 Nb-95 -9.22E-Ol 1.30E+OO 4.06E+OO u WG W-4 395506002 4/14/2016 Ru-103 -l.99E+OO 1.53E+OO 4.37E+OO u WG W-4 395506002 4/14/2016 Ru-106 -8.72E-01 l.IOE+Ol 3.54E+Ol u WG W-4 395506002 4/14/2016 Sb-124 9.00E-01 3.18E+OO 1.08E+Ol u WG W-4 395506002 4/14/2016 Sb-125 -4.0IE+OO 3.79E+OO 1.14E+Ol u WG W-4 395506002 4/14/2016 Se-75 -2.29E-01 l.73E+OO 5.50E+OO u WG W-4 395506002 4/14/2016 Th-228 -2.64E-Ol 3.05E+OO 9.0IE+OO u WG W-4 395506002 4/14/2016 Zn-65 2.35E+OO 2.86E+OO 8.89E+OO u WG W-4 395506002 4/14/2016 Zr-95 -2.31E+OO 2.44E+OO 7.40E+OO u WG W-5 395506003 4/14/2016 Ac-228 6.97E+OO 7.39E+OO 1.96E+Ol u WG W-5 395506003 4/14/2016 Ag-108m 1.87E-Ol l.17E+OO 3.83E+OO u WG W-5 395506003 4/14/2016 Ag-llOm -I.89E+OO 2.00E+OO 5.86E+OO u WG W-5 395506003 4/14/2016 Ba-140 1.45E+Ol 7.llE+OO 2.19E+Ol u WG W-5 395506003 4/14/2016 Be-7 -4.56E+OO 9.62E+OO 2.96E+Ol u WG W-5 395506003 4/14/2016 Ce-141 1.29E+OO 2.82E+OO 8.30E+OO u WG W-5 395506003 4/14/2016 Ce-144 4.74E+Ol l.75E+Ol 3.16E+Ol UI WG W-5 395506003 4/14/2016 Co-57 1.90E+OO l.26E+OO 4.04E+OO u WG W-5 395506003 4/14/2016 Co-58 8.94E-01 1.38E+OO 4.72E+OO u WG W-5 395506003 4/14/2016 Co-60 -9.41E-01 1.57E+OO 4.86E+OO u WG W-5 395506003 4/14/2016 Cr-51 2.17E+Ol l.35E+Ol 4.50E+Ol u WG W-5 395506003 4/14/2016 Cs-134 -4.09E-Ol 1.42E+OO 4.27E+OO u WG W-5 395506003 4/14/2016 Cs-137 -3.80E-01 l.56E+OO 4.40E+OO u WG W-5 395506003 4/14/2016 Fe-59 -l.29E+OO 2.61E+OO 7.97E+OO u ;.;'. D-125 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-5 395506003 4/14/2016 H-3 4.61E+02 4.23E+02 l.32E+03 u WG W-5 395506003 4/14/2016 1-131 1.53E+OO 2.09E+OO 7.05E+OO u WG W-5 395506003 4/14/2016 K-40 -1.49E+Ol l.94E+Ol 6.28E+Ol u WG W-5 395506003 4/14/2016 La-140 l.31E+OO 2.00E+OO 7.00E+OO u WG W-5 395506003 4/14/2016 Mn-54 -2.29E+OO l.51E+OO 3.09E+OO u WG W-5 395506003 4/14/2016 Nb-95 4.50E-01 l.30E+OO 4.40E+OO u WG W-5 395506003 4/14/2016 Ru-103 -2.18E+OO 1.60E+OO 4.29E+OO u WG W-5 395506003 4/14/2016 Ru-106 -1.03E+Ol 1.06E+Ol 3.19E+Ol u WG W-5 395506003 4/14/2016 Sb-124 l.09E+OO 2.88E+OO 9.85E+OO u WG W-5 395506003 4/14/2016 Sb-125 3.64E+OO 3.97E+OO l.33E+Ol u WG W-5 395506003 4/14/2016 Se-75 3.96E+OO 2.07E+OO 6.76E+OO u WG W-5 395506003 4/14/2016 Th-228 5.38E+OO 3.38E+OO 7.90E+OO u WG W-5 395506003 4/14/2016 Zn-65 l.74E+OO 2.92E+OO 8.79E+OO u WG W-5 395506003 4/14/2016 Zr-95 -7.25E-01 2.52E+OO 7.78E+OO u WG W-6 395506004 4/14/2016 Ac-228 -l.61E-01 6.15E+OO l.92E+Ol u WG W-6 395506004 4/14/2016 Ag-108m -4.66E-02 l.30E+OO 4.14E+OO u WG W-6 395506004 4/14/2016 Ag-llOm -1.67E+OO 1.73E+OO 4.96E+OO u WG W-6 395506004 4/14/2016 Ba-140 4.59E-01 6.42E+OO l.88E+Ol u WG W-6 395506004 4/14/2016 Be-7 -6.77E+OO 1.28E+Ol 4.15E+Ol u WG W-6 395506004 4/14/2016 Ce-141 5.95E-01 2.92E+OO 9.19E+OO u WG W-6 395506004 4/14/2016 Ce-144 -3.57E+OO l.22E+Ol 3.55E+Ol u WG W-6 395506004 4/14/2016 Co-57 -1.73E+OO l.60E+OO 4.64E+OO u WG W-6 395506004 4/14/2016 Co-58 -l.15E+OO 1.43E+OO 4.30E+OO u WG W-6 395506004 4/14/2016 Co-60 -1.08E+OO 1.22E+OO 3.51E+OO u WG W-6 395506004 4/14/2016 Cr-51 -l.58E+Ol 1.71E+Ol 4.42E+Ol u WG W-6 395506004 4/14/2016 Cs-134 -1.76E-01 l.38E+OO 4.47E+OO u WG W-6 395506004 4/14/2016 Cs-137 7.83E-01 1.55E+OO 5.26E+OO u WG W-6 395506004 4/14/2016 Fe-59 -l.29E+OO 2.77E+OO 7.44E+OO u WG W-6 395506004 4/14/2016 H-3 7.74E+02 4.56E+02 1.37E+03 u WG W-6 395506004 4/14/2016 1-131 l.09E+OO 2.35E+OO 7.74E+OO u WG W-6 395506004 4/14/2016 K-40 -l.46E+Ol 2.16E+Ol 6.04E+Ol u WG W-6 395506004 4/14/2016 La-140 4.56E+OO 2.34E+OO 8.47E+OO u WG W-6 395506004 4/14/2016 Mn-54 -4.85E-01 l.33E+OO 4.20E+OO u WG W-6 395506004 4/14/2016 Nb-95 l.45E+OO l.32E+OO 4.55E+OO u WG W-6 395506004 4/14/2016 Ru-103 -l.94E+OO 1.49E+OO 4.38E+OO u WG W-6 395506004 4/14/2016 Ru-106 l.38E+Ol 1.24E+Ol 4.30E+Ol u WG W-6 395506004 4/14/2016 Sb-124 -l.65E-01 3.08E+OO l.OOE+Ol u WG W-6 395506004 4/14/2016 Sb-125 3.29E-01 4.00E+OO l.29E+Ol u WG W-6 395506004 4/14/2016 Se-75 -7.31E-01 2.39E+OO 6.70E+OO u WG W-6 395506004 4/14/2016 Th-228 1.12E+OO 3.94E+OO 8.59E+OO u WG W-6 395506004 4/14/2016 Zn-65 * -3.90E-01 4.47E+OO 7.91E+OO u WG W-6 395506004 4/14/2016 Zr-95 -l.39E+OO 2.37E+OO 7.35E+OO u WG W-1 400508001 6/28/2016 Ac-228 l.31E+OO 3.34E+OO 7.26E+OO u WG W-1 400508001 6/28/2016 Ag-108m 3.85E-01 5.30E-01 l.54E+OO u WG W-1 400508001 6/28/2016 Ag-llOm l.32E-01 7.27E-Ol 2.41E+OO u WG W-1 400508001 6/28/2016

..

8.llE-02 3.09E+OO l.OlE+Ol u WG W-1 400508001 6/28/2016 Be-7 4.SOE+OO 8.43E+OO l.58E+Ol u WG W-1 400508001 6/28/2016 Ce-141 3.39E-02 1.33E+OO 3.0lE+OO u WG W-1 400508001 6/28/2016 Ce-144 6.69E+OO 3.07E+OO l.OlE+Ol u WG W-1 400508001 6/28/2016 Co-57 l.13E-01 3.97E-01 l.26E+OO u D-126 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-1 400508001 6/28/2016 Co-58 5. l lE-01 5.61E-Ol l.79E+OO u WG W-1 400508001 6/28/2016 Co-60 -6.33E-01 5.75E-01 l.76E+OO u WG W-1 400508001 6/28/2016 Cr-51 -l.53E+OO 6.12E+OO l.70E+Ol u WG W-1 400508001 6/28/2016 Cs-134 3.77E-01 6.64E-Ol l.92E+OO u WG W-1 400508001 6/28/2016 Cs-137 4.43E-01 5.49E-01 l.77E+OO u WG W-1 400508001 6/28/2016 Fe-59 1.62E+OO 1.25E+OO 3.99E+OO u WG W-1 400508001 6/28/2016 H-3 2.61E+02 4.75E+02 l.51E+03 u WG W-1 400508001 6/28/2016 I-131 1.66E+OO 1.28E+OO 4.21E+OO u WG W-1 400508001 6/28/2016 K-40 2.45E+OO 1.llE+Ol l.62E+Ol u WG W-1 400508001 6/28/2016 La-140 1.28E+OO l.12E+OO 3.67E+OO u WG W-1 400508001 6/28/2016 Mn-54 -3.51E-01 5.38E-01 1.73E+OO u WG W-1 400508001 6/28/2016 Nb-95 1.09E+OO 5.98E-01 l.89E+OO u WG W-1 400508001 6/28/2016 Ru-103 -1.05E+OO 6.46E-Ol l.90E+OO u WG W-1 400508001 6/28/2016 Ru-106 -8.97E+OO 5.19E+OO l.46E+Ol u WG W-1 400508001 6/28/2016 Sb-124 -3.95E-01 l.39E+OO 4.60E+OO u WG W-1 400508001 6/28/2016 Sb-125 -4.79E-01 1.55E+OO 4.43E+OO u WG W-1 400508001 6/28/2016 Se-75 3.50E-01 6.91E-01 2.25E+OO U WG W-1 400508001 6/28/2016 Th-228 l.67E+OO 1.93E+OO 2.86E+OO U WG W-1 400508001 6/28/2016 Zn-65 1.45E+OO l.36E+OO 3.81E+OO U WG W-1 400508001 6/28/2016 Zr-95 1.18E-01 9.50E-01 3.18E+OO U WG W-2 400508002 6/29/2016 Ac-228 1.24E+OO 3.78E+OO 5.24E+OO U WG W-2 400508002 6/29/2016 Ag-108m l.41E-02 3.92E-01 1.26E+OO U WG W-2 400508002 6/29/2016 Ag-llOm -3.39E-01 5.82E-01 l.83E+OO U WG W-2 400508002 6/29/2016 Ba-140 l.71E+OO 3.92E+OO 8.34E+OO U WG W-2 400508002 6/29/2016 Be-7 -l.40E+OO 3.78E+OO 1.26E+Ol U WG W-2 400508002 6/29/2016 Ce-141 8.57E-01 l.29E+OO 2.60E+OO U WG W-2 400508002 6/29/2016 Ce-144 9.24E-01 2.97E+OO 9.50E+OO U WG W-2 400508002 6/29/2016 Co-57 -l.82E-02 3.81E-Ol 1.22E+OO U WG W-2 400508002 6/29/2016 Co-58 -l.92E-01 4.49E-01 l.44E+OO U WG W-2 400508002 6/29/2016 Co-60 2.17E-01 4.77E-01 l.57E+OO u WG W-2 400508002 6/29/2016 Cr-51 3.62E+OO 4.42E+OO l.44E+Ol u WG W-2 400508002 6/29/2016 Cs-134 6.15E-02 6.61E-Ol l.62E+OO u WG W-2 400508002 6/29/2016 Cs-137 6.57E-01 4.68E-01 1.51E+OO u WG W-2 400508002 6/29/2016 Fe-59 4.66E-01 9.48E-01 3.17E+OO u WG W-2 400508002 6/29/2016 H-3 7.32E+02 4.94E+02 l.47E+03 u WG W-2 400508002 6/29/2016 I-131 2.71E-01 9.91E-Ol 3.23E+OO u WG W-2 400508002 6/29/2016 K-40 5.98E+OO l.02E+Ol 1.39E+Ol u WG W-2 400508002 6/29/2016 La-140 1.1 lE+OO 8.42E-Ol 2.80E+OO u WG W-2 400508002 6/29/2016 Mn-54 3.52E-01 4.27E-Ol 1.36E+OO u WG W-2 400508002 6/29/2016 Nb-95 -2.85E-01 4.79E-01 1.53E+OO u WG W-2 400508002 6/29/2016 Ru-103 4.25E-Ol 5.08E-Ol l.70E+OO u WG W-2 400508002 6/29/2016 Ru-106 -5.34E-01 4.08E+OO l.35E+Ol u WG W-2 400508002 6/29/2016 Sb-124 -l.67E+OO l.04E+OO 2.98E+OO u WG W-2 400508002 6/29/2016 Sb-125 -1.17E+OO l.26E+OO 3.88E+OO u WG W-2 400508002 6/29/2016 Se-75 8.22E-OI 6.03E-OI l.93E+OO u WG W-2 400508002 6/29/2016 Th-228 2.llE+OO 1.41E+OO 2.62E+OO u WG W-2 400508002 6/29/2016 Zn-65 -6.29E+OO 1.98E+OO 2.89E+OO u WG W-2 400508002 6/29/2016 Zr-95 -8.21E-Ol 8.81E-OI 2.75E+OO u WG W-3 400508003 6/29/2016 Ac-228 3.25E+OO 3.34E+OO 5.02E+OO u WG W-3 400508003 6/29/2016 Ag-108m 8.86E-01 4.36E-01 1.34E+OO u D-127 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-3 400508003 6/29/2016 Ag-llOm -l.57E-Ol 7.40E-01 1.81E+OO u WG W-3 400508003 6/2912016 Ba-140 -l.30E+Ol 6.45E+OO 8.32E+OO u WG W-3 400508003 6/29/2016 Be-7 3.00E+OO 3.76E+OO 1.26E+Ol u WG W-3 400508003 6/2912016 Ce-141 6.09E-01 l.lOE+OO 2.86E+OO u WG W-3 400508003 6/29/2016 Ce-144 -4.59E+OO 3.18E+OO 9.92E+OO u WG W-3 400508003 6/29/2016 Co-57 5.81E-02 3.95E-01 l.34E+OO u WG W-3 400508003 6/29/2016 Co-58 6.30E-01 4.45E-Ol 1.42E+OO u WG W-3 400508003 6/29/2016 Co-60 -1.64E-Ol 4.26E-01 l.36E+OO u WG W-3 400508003 6/29/2016 Cr-51 6.16E+OO 4.75E+OO l.50E+Ol u WG W-3 400508003 6129/2016 Cs-134 1.56E+OO 5.85E-01 1.61E+OO u WG W-3 400508003 6/29/2016 Cs-137 1.72E+OO 9.42E-01 l.37E+OO UI WG W-3 400508003 6/29/2016 Fe-59 -6.03E-01 9.40E-Ol 3.02E+OO u WG W-3 400508003 6/2912016 H-3 9.40E+02 5.20E+02 1.52E+03 u WG W-3 400508003 6/29/2016 I-131 3.48E-Ol 1.05E+OO 3.27E+OO u WG W-3 400508003 6/2912016 K-40 -3.lOE+OO 8.0lE+OO 1.97E+Ol u WG W-3 400508003 6/29/2016 La-140 -3.79E-02 8.18E-01 2.74E+OO u WG W-3 400508003 6/29/2016 Mn-54 -1.28E+OO 8.27E-01 l.38E+OO u WG W-3 400508003 6/29/2016 Nb-95 -1.24E+OO 7.66E-01 1.40E+OO u WG W-3 400508003 6/29/2016 Ru-103 1.94E-02 5.34E-01 1.55E+OO u WG W-3 400508003 6/29/2016 Ru-106 -2.54E+OO . 3.97E+OO l.27E+Ol u WG W-3 400508003 6/29/2016 Sb-124 -7.13E-01 1.0lE+OO 3.20E+OO u WG W-3 400508003 6/29/2016 Sb-125 4.75E-03 l.18E+OO 3.96E+OO u WG W-3 400508003 6/29/2016 Se-75 -8.50E-Ol 6.64E-01 2.03E+OO u WG W-3 400508003 6/29/2016 Th-228 3.26E+OO 1.74E+OO 3.20E+OO UI WG W-3 400508003 6/29/2016 Zn-65 6.53E-01 l.03E+OO 2.99E+OO u WG W-3 400508003 6/2912016 Zr-95 l.94E-Ol 7.63E-Ol 2.49E+OO u WG W-7 400508004 6/28/2016 Ac-228 -3.62E+OO 2.69E+OO 5.90E+OO u WG W-7 400508004 6/28/2016 Ag-108m -4.80E-01 4.07E-Ol l.26E+OO u WG W-7 400508004 6/28/2016 Ag-llOm 1.41E+OO 6.58E-01 l.86E+OO u WG W-7 400508004 6/28/2016 Ba-140 l.63E+OO 2.76E+OO 9.0lE+OO u WG W-7 400508004 6/28/2016 Be-7 -l.27E+OO 4.08E+OO l.33E+Ol u WG W-7 400508004 6128/2016 Ce-141 8.41E-Ol l.45E+OO 2.78E+OO u WG W-7 400508004 6/28/2016 Ce-144 -5.00E-01 3.18E+OO l.03E+Ol u WG W-7 400508004 6/28/2016 Co-57 l.74E-01 4.14E-01 l.34E+OO u WG W-7 400508004 6/28/2016 Co-58 -l.85E-01 4.17E-01 l.38E+OO u WG W-7 400508004 6/28/2016 Co-60 -8.96E-01 9.87E-Ol l.41E+OO u WG W-7 400508004 6/28/2016 Cr-51 1.77E+OO 4.50E+OO l.51E+Ol u WG W-7 400508004 6128/2016 Cs-134 5.84E-01 4.80E-Ol 1.60E+OO u WG W-7 400508004 6/28/2016 Cs-137 -l.71E-01 4.86E-01 1.55E+OO u WG W-7 400508004 6128/2016 Fe-59 -7.47E-01 8.61E-Ol 2.70E+OO u WG W-7 400508004 6/28/2016 H-3 9.86E+02 5.09E+02 1.47E+03 u WG W-7 400508004 6/28/2016 I-131 -1.08E+OO 1.54E+OO 3.48E+OO u WG W-7 400508004 6128/2016 K-40 -l.28E+Ol 8.63E+OO 1.84E+Ol u WG W-7 400508004 6/28/2016 La-140 -3.57E-Ol 7.74E-Ol 2.54E+OO u WG W-7 400508004 6/28/2016 Mn-54 -3.13E-Ol 4.06E-Ol l.32E+OO u WG W-7 400508004 6/28/2016 Nb-95 8.35E-01 7.62E-01 l.39E+OO u WG W-7 400508004 6/28/2016 Ru-103 -3.0lE-01 5.76E-01 1.61E+OO u WG W-7 400508004 6/28/2016 Ru-106 5.05E-01 4.53E+OO 1.28E+Ol u WG W-7 400508004 6/28/2016 Sb-124 -1.0lE+OO 1.07E+OO 3.38E+OO u WG W-7 400508004 6/28/2016 Sb-125 4.62E-01 1.20E+OO 3.96E+OO u D-128 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-7 400508004 6/28/2016 Se-75 4.81E-02 6.lOE-01 2.06E+OO u WG W-7 400508004 6/28/2016 Th-228 7.92E-Ol 1.45E+OO 2.68E+OO u WG W-7 400508004 6/28/2016 Zn-65 -2.89E+OO l.13E+OO 2.73E+OO u WG W-7 400508004 6/28/2016 Zr-95 -6.57E-Ol 7.50E-Ol 2.42E+OO u WG W-8 400508005 6/29/2016 Ac-228 l.25E+OO 3.89E+OO 6.06E+OO u WG W-8 400508005 6/29/2016 Ag-108m 4.93E-OI 4.ISE-01 l.31E+OO u WG W-8 400508005 6/29/2016 Ag-llOm 5.48E-OI 6.04E-OI l.95E+OO u WG W-8 400508005 6/29/2016 Ba-140 -7.60E-Ol 2.93E+OO 9.73E+OO u WG W-8 400508005 6/29/2016 Be-7 4.20E-02 3.95E+OO 1.33E+Ol u WG W-8 400508005 6/29/2016 Ce-141 5.1 lE-01 9.06E-Ol 2.88E+OO u WG W-8 400508005 6/29/2016 Ce-144 -8.88E-Ol 2.93E+OO 9.29E+OO u WG W-8 400508005 6/29/2016 Co-57 4.16E-OI 3.90E-Ol 1.23E+OO u WG W-8 400508005 6/29/2016 Co-58 -9.02E-OI 4.89E-Ol 1.35E+OO u WG W-8 400508005 6/29/2016 Co-60 2.82E-01 4.14E-Ol 1.37E+OO u WG W-8 400508005 612912016 Cr-51 -7.66E+OO 5.04E+OO 1.50E+OI u WG W-8 400508005 6/29/2016 Cs-134 8.00E-01 5.38E-01 l.56E+OO u WG W-8 400508005 612912016 Cs-137 l.19E+OO 6.13E-01 1.45E+OO u WG W-8 400508005 6/29/2016 Fe-59 2.07E-01 9.05E-Ol 3.02E+OO u WG W-8 400508005 6/29/2016 H-3 5.76E+02 4.93E+02 l.51E+03 u WG W-8 400508005 6/29/2016 I-131 3.45E-OI 1.34E+OO 4.38E+OO u WG W-8 400508005 6/29/2016 K-40 l.18E+OI 9.32E+OO l.27E+Ol u WG W-8 400508005 6/29/2016 La-140 -l.87E-OI 1.12E+OO 3.20E+OO u WG W-8 400508005 6/29/2016 Mn-54 -6.88E-01 5.13E-01 l.29E+OO u WG W-8 400508005 6/29/2016 Nb-95 -6.84E-OI 7.40E-OI l.52E+OO u WG W-8 400508005 6/29/2016 Ru-103 -1.37E+OO 5.98E-01 l.62E+OO u WG W-8 400508005 6/29/2016 Ru-106 -4.56E-Ol 3.91E+OO l.29E+Ol u WG W-8 400508005 6/29/2016 Sb-124 5.81E-OI l.lOE+OO 3.22E+OO u WG W-8 400508005 6/29/2016 Sb-125 -5.99E-01 l.19E+OO 3.77E+OO u WG W-8 400508005 6/29/2016 Se-75 2.87E-OI 5.95E-OI l.97E+OO u WG W-8 400508005 6/29/2016 Th-228 -2.46E+OO 1.34E+OO 2.88E+OO u WG W-8 400508005 6/29/2016 Zn-65 4.37E-OI 9.45E-Ol 2.74E+OO u WG W-8 400508005 6/29/2016 Zr-95 -1.18E-01 8.19E-01 2.67E+OO u WG W-9 400508006 6/29/2016 Ac-228 -4.0SE+OO 3.48E+OO 6.92E+OO u WG W-9 400508006 6/29/2016 Ag-108m l.88E-Ol 4.40E-01 1.42E+OO u WG W-9 400508006 6/29/2016 Ag-llOm 2.76E-01 6.17E-01 2.03E+OO u WG W-9 400508006 6/29/2016 Ba-140 -8.02E-01 2.60E+OO 8.63E+OO u WG W-9 400508006 6/29/2016 Be-7 -2.l lE+OO 7.46E+OO l.42E+Ol u WG W-9 400508006 6/29/2016 Ce-141 l.48E+OO l.62E+OO 3.04E+OO u WG W-9 400508006 6/29/2016 Ce-144 2.43E-03 3.51E+OO 1.18E+Ol u WG W-9 400508006 6/29/2016 Co-57 -5.64E-01 4.78E-Ol 1.53E+OO u WG W-9 400508006 6/29/2016 Co-58 6.69E-02 4.37E-Ol 1.44E+OO u WG W-9 400508006 6/29/2016 Co-60 -l.79E-Ol 4.93E-Ol l.61E+OO u WG W-9 400508006 6/29/2016 Cr-51 2.31E+OO 5.62E+OO l.69E+Ol u WG W-9 400508006 6/29/2016 Cs-134 3.00E-01 4.97E-01 1.64E+OO u WG W-9 400508006 6/29/2016 Cs-137 7.41E-01 5.17E-OI l.67E+OO u WG W-9 400508006 6/29/2016 Fe-59 -5.48E-Ol 9.36E-Ol 3.06E+OO u WG W-9 400508006 6/29/2016 H-3 7.32E+02 4.94E+02 l.47E+03 u WG W-9 400508006 6/29/2016 I-131 -l.24E+OO l.lOE+OO 3.32E+OO u WG W-9 400508006 6/29/2016 K-40 4.93E+Ol 1.04E+Ol 1.47E+Ol WG W-9 400508006 6/29/2016 La-140 8.13E-01 9.80E-01 3.26E+OO u D-129 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

WG W-9 400508006 6/29/2016 Mn-54 1.56E-Ol 4.66E-Ol l.53E+OO u WG W-9 400508006 6129/2016 Nb-95 -3.77E-Ol 4.94E-Ol l.56E+OO u WG W-9 400508006 6/29/2016 Ru-103 -5.85E-Ol 6.14E-Ol l.70E+OO u WG W-9 400508006 6129/2016 Ru-106 7.45E-Ol 4.54E+OO l.32E+Ol u WG W-9 400508006 6/29/2016 Sb-124 -3.00E-01 l.llE+OO 3.57E+OO u WG W-9 400508006 6/29/2016 Sb-125 2.99E-Ol l.35E+OO 4.33E+OO u WG W-9 400508006 6/29/2016 Se-75 l.22E+OO 7.45E-Ol 2.31E+OO u WG W-9 400508006 6/29/2016 Th-228 6.75E+OO 2.41E+OO 3.53E+OO UI WG W-9 400508006 6/29/2016 Zn-65 -5.52E-Ol l.12E+OO 3.16E+OO u WG W-9 400508006 6/29/2016 Zr-95 -8.63E-Ol 8.60E-Ol 2.67E+OO u WG W-10 400508007 6/28/2016 Ac-228 -l.95E+OO 3.69E+OO 6.81E+OO u WG W-10 400508007 6/28/2016 Ag-108m -2.29E-Ol 4.llE-01 l.31E+OO u WG W-10 400508007 6/28/2016 Ag-1 lOm 6.80E-01 6.52E-Ol l.96E+OO u WG W-10 400508007 6/28/2016 Ba-140 3.65E+OO 3.02E+OO 9.64E+OO u WG W-10 400508007 6/28/2016 Be-7 6.57E+OO 4.45E+OO l.41E+Ol u WG W-10 400508007 6/28/2016 Ce-141 2.79E+OO l.20E+OO 3.04E+OO u WG W-10 400508007 6/28/2016 Ce-144 -2.63E+OO 3.33E+OO l.04E+Ol u WG W-10 400508007 6/28/2016 Co-57 l.03E-Ol 4.33E-Ol l.40E+OO u WG W-10 400508007 6/28/2016 Co-58 l.22E+OO 5.43E-Ol l.53E+OO u WG W-10 400508007 6/28/2016 Co-60 l.49E-01 4.53E-01 1.53E+OO u WG W-10 400508007 6/28/2016 Cr-51 3.66E+OO 5.16E+OO l.59E+Ol u WG W-10 400508007 6/28/2016 Cs-134 4.95E-Ol 5.16E-Ol l.71E+OO u WG W-10 400508007 6/28/2016 Cs-137 -9.56E-02 4.87E-01 l.63E+OO u WG W-10 400508007 6/28/2016 Fe-59 5.61E-Ol 9.79E-Ol 3.21E+OO u WG W-10 400508007 6/28/2016 H-3 -l.47E+Ol 4.64E+02 l.53E+03 u WG W-10 400508007 6/28/2016 I-131 -4.61E-01 l.15E+OO 3.76E+OO u WG W-10 400508007 6/28/2016 K-40 2.49E+OO 9.93E+OO l.32E+Ol u WG W-10 400508007 6/28/2016 La-140 2.28E-01 8.95E-01 2.98E+OO u WG W-10 400508007 6/28/2016 Mn-54 3.42E-Ol 4.35E-Ol l.45E+OO u WG W-10 400508007 6/28/2016 Nb-95 -l.95E+OO 1.04E+OO l.69E+OO u WG W-10 400508007 6/28/2016 Ru-103 -1.15E-Ol 5.35E-Ol l.72E+OO u WG W-10 400508007 6/28/2016 Ru-106 -2.71E+OO 4.03E+OO l.32E+Ol u WG W-10 400508007 6/28/2016 Sb-124 4.84E-01 1.14E+OO 3.78E+OO u WG W-10 400508007 6/28/2016 Sb-125 l.28E+OO 4.16E+OO u WG W-10 400508007 6/28/2016 Se-75 8.89E-01 7.36E-Ol 2.14E+OO u WG W-10 400508007 6/28/2016 Th-228 -l.04E+OO l.30E+OO 3.38E+OO u WG W-10 400508007 6/28/2016 Zn-65 -2.67E+OO 1.15E+OO 2.85E+OO u WG W-10 400508007 6/28/2016 Zr-95 l.33E+OO l.09E+OO 2.76E+OO u WG W-11 400508008 6/28/2016 Ac-228 7.95E-Ol 5.39E+OO l.02E+Ol u WG W-11 400508008 6/28/2016 Ag-108m 1.llE+OO 6.24E-Ol l.98E+OO u WG W-11 400508008 6/28/2016 Ag-llOm -5.69E-Ol l.06E+OO 2.94E+OO u WG W-11 400508008 6/28/2016 Ba-140 -7.17E+OO 6.93E+OO l.27E+Ol u WG W-11 400508008 6/28/2016 Be-7 -5.lOE+OO 5.97E+OO l.88E+Ol u WG W-11 400508008 6/28/2016 Ce-141 -2.05E-01 L24E+OO 3.66E+OO u WG W-11 400508008 6/28/2016 Ce-144 2.73E+OO 4.00E+OO l.33E+Ol u WG W-11 400508008 6/28/2016 Co-57 l.76E-02 5.04E-Ol l.69E+OO u WG W-11 400508008 6/28/2016 Co-58 -7.72E-Ol 7.18E-01 2.23E+OO u WG W-11 400508008 6/28/2016 Co-60 l.49E-01 6.68E-Ol 2.26E+OO u WG W-11 400508008 6/28/2016 Cr-51 -3.40E+OO 6.40E+OO 2.13E+Ol u WG W-11 400508008 6/28/2016 Cs-134 7.83E-Ol 7.69E-01 2.59E+OO u D-130 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

WG W-11 400508008 6/28/2016 Cs-137 3.13E-01 7.15E-01 2.32E+OO u WG W-11 400508008 6/28/2016 Fe-59 1.97E+OO l.56E+OO 5.14E+OO u WG W-11 400508008 6/28/2016 H-3 4.74E+Ol 4.62E+02 l.51E+03 u WG W-11 400508008 6/28/2016 I-131 -8.95E-01 l.47E+OO 4.82E+OO u WG W-11 400508008 6/28/2016 K-40 2.43E+OO l.90E+Ol 2.15E+Ol u WG W-11 400508008 6/28/2016 La-140 -3.04E+OO l.64E+OO 4.32E+OO u WG W-11 400508008 6/28/2016 Mn-54 -9.38E-01 7.20E-01 2.18E+OO u WG W-11 400508008 6/28/2016 Nb-95 -l.98E-Ol 7.16E-01 2.38E+OO u WG W-11 400508008 6/28/2016 Ru-103 3.03E-01 l.13E+OO 2.39E+OO u WG W-11 400508008 6/28/2016 Ru-106 3.97E-01 5.95E+OO l.92E+Ol u WG W-11 400508008 6/28/2016 Sb-124 2.04E-Ol l.77E+OO 5.85E+OO u WG W-11 400508008 6/28/2016 Sb-125 -1.67E+OO 1.79E+OO 5.64E+OO u WG W-11 400508008 6/28/2016 Se-75 -2.52E-01 8.48E-Ol 2.68E+OO u WG W-11 400508008 6/28/2016 Th-228 -2.35E+OO 2.13E+OO 4.42E+OO u WG W-11 400508008 6/28/2016 Zn-65 -1.76E+OO 1.67E+OO 4.20E+OO u WG W-11 400508008 6/28/2016 Zr-95 -l.22E+OO l.30E+OO 4.13E+OO u WG W-12 400508009 6/28/2016 Ac-228 5.47E+OO 4.57E+OO 7.18E+OO u WG W-12 400508009 6/28/2016 Ag-108m -8.94E-Ol 5.08E-01 l.47E+OO u WG W-12 400508009 6/28/2016 Ag-llOm 9.06E-01 8.04E-Ol 2.68E+OO u WG W-12 400508009 6/28/2016 Ba-140 -5.17E+OO 3.63E+OO l.08E+Ol u WG W-12 400508009 6/28/2016 Be-7 -7.73E+OO 5.42E+OO 1.58E+Ol u WG W-12 400508009 6/28/2016 Ce-141 3.42E+OO l.29E+OO 3.36E+OO UI WG W-12 400508009 6/28/2016 Ce-144 -7.19E-01 3.28E+OO l.08E+Ol u WG W-12 400508009 6/28/2016 Co-57 3.05E-01 4.17E-01 l.37E+OO u WG W-12 400508009 6/28/2016 Co-58 6.06E-01 6.46E-01 2.08E+OO u WG W-12 400508009 6/28/2016 Co-60 -4.14E-01 6.57E-01 2.06E+OO u WG W-12 400508009 6/28/2016 Cr-51 -1.18E+OI 7.81E+OO l.77E+Ol u WG W-12 400508009 6/28/2016 Cs-134 -7.48E-02 6.54E-01 2.03E+OO u WG W-12 400508009 6/28/2016 Cs-137 -5.48E-01 6.43E-01 2.00E+OO u WG W-12 400508009 6/28/2016 Fe-59 -1.05E+OO 1.20E+OO 3.74E+OO u WG W-12 400508009 6/28/2016 H-3 8.91E+02 5.14E+02 l.51E+03 u WG W-12 400508009 6/28/2016 I-131 l.31E+OO l.37E+OO 4.02E+OO u WG W-12 400508009 6/28/2016 K-40 3.19E+Ol l.19E+Ol 1.97E+Ol WG W-12 400508009 6/28/2016 La-140 1.35E+OO l.26E+OO 4.24E+OO u WG W-12 400508009 6/28/2016 Mn-54 -1.16E+OO 6.64E-Ol 1.93E+OO u WG W-12 400508009 6/28/2016 Nb-95 -8.07E-01 8.00E-01 2.llE+OO u WG W-12 400508009 6/28/2016 Ru-103 -7.93E-OI 6.76E-Ol 2.08E+OO u WG W-12 400508009 6/28/2016 Ru-106 2.65E+OO 5.25E+OO 1.72E+Ol u WG W-12 400508009 6/28/2016 Sb-124 -8.34E-01 1.49E+OO 4.79E+OO u WG W-12 400508009 6/28/2016 Sb-125 -2.50E+OO l.55E+OO 4.58E+OO u WG W-12 400508009 6/28/2016 Se-75 2.20E-OI 6.97E-Ol 2.25E+OO u WG W-12 400508009 6/28/2016 Th-228 5.93E+OO 1.68E+OO 2.95E+OO WG W-12 400508009 6/28/2016 Zn-65 -9.69E-Ol l.28E+OO 4.0lE+OO u WG W-12 400508009 6/28/2016 Zr-95 -1.lOE+OO 1.14E+OO 3.46E+OO u WG W-13 400508010 6/28/2016 Ac-228 -2.60E-01 3.32E+OO 7.88E+OO u WG W-13 400508010 6/28/2016 Ag-108m 5.12E-01 5.06E-01 l.66E+OO u WG W-13 400508010 6/28/2016 Ag-llOm 7.32E-01 7.82E-01 2.46E+OO u WG W-13 400508010 6/28/2016 Ba-140 4.61E+OO 3.40E+OO 1.09E+Ol u WG W-13 400508010 6/28/2016 Be-7 -4.41E+OO 7.97E+OO l.61E+Ol u WG W-13 400508010 6/28/2016 Ce-141 6.80E-01 1.03E+OO 3.32E+OO u D-131 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 .: SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-13 400508010 6/28/2016 Ce-144 -2.74E+OO 3.86E+OO l.17E+Ol u WG W-13 400508010 6/28/2016 Co-57 -4.55E-02 4.81E-Ol 1.61E+OO u WG W-13 400508010 6/28/2016 Co-58 5.96E-02 5.92E-01 1.86E+OO u WG W-13 400508010 6/28/2016 Co-60 -9.49E-01 6.40E-01 1.85E+OO u WG W-13 400508010 6/28/2016 Cr-51 -1.08E+Ol 6.13E+OO 1.82E+Ol u WG W-13 400508010 6/28/2016 Cs-134 5.63E-01 6.15E-01 2.03E+OO u WG W-13 400508010 6/28/2016 Cs-137 -3.04E-Ol 6.57E-01 1.85E+OO u WG W-13 400508010 6/28/2016 Fe-59 4.llE-01 l.16E+OO 3.88E+OO u WG W-13 400508010 6/28/2016 H-3 3.04E+02 4.85E+02 1.54E+03 u WG W-13 400508010 6/28/2016 1-131 6.71E-01 l.31E+OO 4.38E+OO u WG W-13 400508010 6/28/2016 K-40 -l.07E+Ol 1.09E+Ol 2.47E+Ol u WG W-13 400508010 6/28/2016 La-140 l.36E+OO l.17E+OO 3.95E+OO u WG W-13 400508010 6/28/2016 Mn-54 7.87E-01 6.70E-01 1.76E+OO u WG W-13 400508010 6/28/2016 Nb-95 l.55E+OO 6.67E-01 l.99E+OO u WG W-13 400508010 6/28/2016 Ru-103 5.64E-01 7.12E-01 2.03E+OO u WG W-13 400508010 6/28/2016 Ru-106 -3.66E+Ol 1.52E+Ol 1.65E+Ol u WG W-13 400508010 6/28/2016 Sb-124 -5.65E-01 l.41E+OO 4.57E+OO u WG W-13 400508010 6/28/2016 Sb-125 -2.64E-01 1.55E+OO 5.08E+OO u WG W-13 400508010 6/28/2016 Se-75 -5.57E-01 7.90E-01 2.48E+OO u WG W-13 400508010 6/28/2016 Th-228 2.13E-Ol l.73E+OO 3.llE+OO u WG W-13 400508010 6/28/2016 Zn-65 -l.55E+OO 1.41E+OO 3.64E+OO u WG W-13 400508010 6/28/2016 Zr-95 -l.63E-01 9.92E-01 3.27E+OO u WG W-14 400508011 6/28/2016 Ac-228 3.33E+OO 4.29E+OO 7.03E+OO u WG W-14 400508011 6/28/2016 Ag-108m -4.68E-01 4.71E-Ol l.44E+OO u WG W-14 400508011 6/28/2016 Ag-llOm 2.23E+OO l.23E+OO 2.44E+OO u WG W-14 400508011 6/28/2016 Ba-140 2.35E+OO 2.98E+OO l.OOE+Ol u WG W-14 400508011 6/28/2016 Be-7 3.83E+OO 4.63E+OO l.49E+Ol u WG W-14 400508011 6/28/2016 Ce-141 l.70E+OO 1.93E+OO 3.09E+OO u WG W-14 400508011 6/28/2016 Ce-144 -l.26E-01 3.62E+OO l.17E+Ol u WG W-14 400508011 6/28/2016 Co-57 -4.47E-01 4.84E-01 l.51E+OO u WG W-14 400508011 6/28/2016 Co-58 4.23E-01 5.24E-01 l.72E+OO u WG W-14 400508011 6/28/2016 Co-60 3.95E-01 5.86E-01 l.95E+OO u WG W-14 400508011 6/28/2016 Cr-51 8.54E-02 5.33E+OO l.76E+Ol u WG W-14 400508011 6/28/2016 Cs-134 1.91E+OO l.04E+OO 1.83E+OO UI WG W-14 400508011 6/28/2016 Cs-137 -2. l lE-01 5.1 lE-01 l.67E+OO u WG W-14 400508011 6/28/2016 Fe-59 3.25E+OO l.49E+OO 4.04E+OO u WG W-14 400508011 6/28/2016 H-3 6.24E+02 5.07E+02 l.54E+03 u WG W-14 400508011 6/28/2016 1-131 -l.48E+OO l.49E+OO 4.03E+OO u WG W-14 400508011 6/28/2016 K-40 5.79E+OO l. llE+Ol l.62E+Ol u WG W-14 400508011 6/28/2016 La-140 -l.29E-01 l.04E+OO 3.34E+OO u WG W-14 400508011 6/28/2016 Mn-54 -l.30E-01 5.18E-01 l.67E+OO u WG W-14 400508011 6/28/2016 Nb-95 6.09E-01 5.54E-01 l.81E+OO u WG W-14 400508011 6/28/2016 Ru-103 6.04E-02 6.39E-01 l.89E+OO u WG W-14 400508011 6/28/2016 Ru-106 l.28E+OO 4.25E+OO l.42E+Ol u WG W-14 400508011 6/28/2016 Sb-124 6.18E-01 l.40E+OO 4.75E+OO u WG W-14 400508011 6/28/2016 Sb-125 l.15E+OO l.44E+OO 4.66E+OO u WG W-14 400508011 6/2812016 Se-75 5.58E-01 6.86E-01 2.27E+OO u WG W-14 400508011 6/28/2016 Th-228 -l.57E+OO l.73E+OO 3.38E+OO u WG W-14 400508011 6/28/2016 Zn-65 -1.22E+OO l.lOE+OO 3.39E+OO u WG W-14 400508011 6/28/2016 Zr-95 -4.54E+OO 1.99E+OO 3.14E+OO u 0-132 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-15 400508012 6/29/2016 Ac-228 1.16E+OO 5.14E+OO 5.94E+OO u WG W-15 400508012 6/29/2016 Ag-108m -3.52E-01 5.08E-01 1.59E+OO u WG W-15 400508012 6/29/2016 Ag-lIOm -8.llE-01 7.12E-Ol 2.17E+OO u WG W-15 400508012 6/29/2016 Ba-140 9.22E+OO 6.98E+OO 9.79E+OO u WG W-15 400508012 6/29/2016 Be-7 -4.24E+OO 4.97E+OO 1.53E+Ol u WG W-15 400508012 6/29/2016 Ce-141 3.40E+OO l.38E+OO 3.51E+OO u WG W-15 400508012 6/29/2016 Ce-144 7.85E+OO 4.22E+OO 1.27E+Ol u WG W-15 400508012 6/29/2016 Co-57 3.55E-01 5.02E-01 1.69E+OO u WG W-15 400508012 6/29/2016 Co-58 -5.78E-01 5.62E-Ol 1.75E+OO u WG W-15 400508012 6/29/2016 Co-60 6.85E-01 7.65E-01 1.80E+OO u WG W-15 400508012 6/29/2016 Cr-51 5.17E+OO 5.44E+OO l.77E+Ol u WG W-15 400508012 6/29/2016 Cs-134 -2.53E-01 9.74E-01 1.95E+OO u WG W-15 400508012 6/29/2016 Cs-137 1.13E+OO 5.91E-Ol 1.86E+OO u WG W-15 400508012 6/29/2016 Fe-59 7.03E-Ql 1.16E+OO 3.81E+OO u WG W-15 400508012 6/29/2016 H-3 1.09E+03 5.22E+02 1.49E+03 u WG W-15 400508012 6/29/2016 I-131 -1.89E+OO l.29E+OO 3.80E+OO u WG W-15 400508012 6/29/2016 K-40 -2.12E-02 l.02E+Ol 2.56E+Ol u WG W-15 400508012 6/29/2016 La-140 -l.23E+OO 1.15E+OO 3.54E+OO u WG W-15 400508012 6/29/2016 Mn-54 -2.63E-01 5.04E-01 1.63E+OO u WG W-15 400508012 6129/2016 Nb-95 5.07E-01 5.70E-Ol 1.89E+OO u WG W-15 400508012 6/29/2016 Ru-103 -5.80E-01 7.I3E-OI l.90E+OO u WG W-15 400508012 6/29/2016 Ru-106 6.64E+OO 4.95E+OO 1.63E+Ol u WG W-15 400508012 6/29/2016 Sb-124 -2.47E+OO 2.24E+OO 4.54E+OO u WG W-15 400508012 6129/2016 Sb-125 -l.06E+OO 1.46E+OO 4.55E+OO u WG W-15 400508012 6/29/2016 Se-75 2.71E-01 7.51E-OI 2.48E+OO u WG W-15 400508012 6/29/2016 Th-228 -l.09E+OO l.80E+OO 3.85E+OO u WG W-15 400508012 6/29/2016 Zn-65 -5.94E-Ol l.39E+OO 3.77E+OO u WG W-15 400508012 6/29/2016 Zr-95 2.14E+OO 1.04E+OO 3.23E+OO u WG MW-20 400508013 6/28/2016 Ac-228 4.06E+OO 4.66E+OO 7.40E+OO u WG MW-20 400508013 6/28/2016 Ag-108m -5.79E-02 4.67E-01 l.54E+OO u WG MW-20 400508013 6/28/2016 Ag-llOm -7.50E-Ol 6.99E-Ol 2.20E+OO u WG MW-20 400508013 6/28/2016 Ba-140 4.63E+OO 3.93E+OO 1.27E+Ol u WG MW-20 400508013 6/28/2016 Be-7 -2.56E+OO 4.82E+OO l.55E+Ol u WG MW-20 400508013 6/28/2016 Ce-141 1.41E+OO 1.62E+OO 3.53E+OO u WG MW-20 400508013 6/28/2016 Ce-144 -4.18E+OO 4.76E+OO l.19E+Ol u WG MW-20 400508013 6/28/2016 Co-57 2.I3E-01 5.15E-01 l.66E+OO u WG MW-20 400508013 6/28/2016 Co-58 -1.03E+OO 6.64E-01 l.77E+OO u WG MW-20 400508013 6/28/2016 Co-60 -3.64E-02 6.28E-01 1.77E+OO u WG MW-20 400508013 6/28/2016 Cr-51 -7.72E+OO 6.74E+OO 1.83E+Ol u WG MW-20 400508013 6/28/2016 Cs-134 5.32E-OI 6.07E-Ol 1.86E+OO u WG MW-20 400508013 6/28/2016 Cs-137 7.37E-Ol 5.72E-01 1.83E+OO u WG MW-20 400508013 6/28/2016 Fe-59 -2.26E+OO 1.20E+OO 3.29E+OO u WG MW-20 400508013 6/28/2016 H-3 1.15E+02 4.54E+02 l.47E+03 u WG MW-20 400508013 6/28/2016 I-131 -l.58E+OO 1.55E+OO 4.90E+OO u WG MW-20 400508013 6/28/2016 K-40 2.06E+Ol l.36E+Ol 1.79E+Ol UI WG MW-20 400508013 6/28/2016 La-140 1.72E+OO 1.25E+OO 4.07E+OO u WG MW-20 400508013 6/28/2016 Mn-54 -6.63E-01 5.19E-Ol l.61E+OO u WG MW-20 400508013 6/28/2016 Nb-95 -3.47E-01 8.30E-01 1.93E+OO u WG MW-20 400508013 6/28/2016 Ru-103 1.60E+OO 7.53E-Ol 2.25E+OO u WG MW-20 400508013 6/28/2016 Ru-106 -2.17E+OO 4.73E+OO l.51E+Ol u D-133 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG MW-20 400508013 6/28/2016 Sb-124 l.45E+OO L27E+OO 3.97E+OO u WG MW-20 400508013 6/28/2016 Sb-125 l.18E-Ol l.45E+OO 4.78E+OO u WG MW-20 400508013 6/28/2016 Se-75 6.96E-01 7.llE-01 2.35E+OO u WG MW-20 400508013 6/28/2016 Th-228 2.55E+OO l.85E+OO 3.65E+OO u WG MW-20 400508013 6/28/2016 Zn-65 -5.08E-01 l.36E+OO 3.39E+OO u WG MW-20 400508013 6/28/2016 Zr-95 -2.50E-01 l.02E+OO 3.26E+OO u WG MW-21 400508014 6/28/2016 Ac-228 8.87E+OO 4.32E+OO 4.85E+OO UI WG MW-21 400508014 6/28/2016 Ag-108m l.65E-Ol 4.09E-Ol l.32E+OO u WG MW-21 400508014 6/28/2016 Ag-llOm 5.76E-Ol 6.12E-Ol l.98E+OO u WG MW-21 400508014 6/28/2016 Ba-140 4.65E+OO 3.19E+OO l.03E+Ol u WG MW-21 400508014 6/28/2016 Be-7 l.30E+Ol 5.03E+OO l.43E+Ol u WG MW-21 400508014 6/28/2016 Ce-141 6.88E-01 9.08E-Ol 2.87E+OO u WG MW-21 400508014 6/28/2016 Ce-144 -3.32E-02 3.17E+OO 9.61E+OO u WG MW-21 400508014 6/28/2016 Co-57 1.98E-Ol 3.85E-Ol 1.23E+OO u WG MW-21 400508014 6/28/2016 Co-58 7.47E-Ol 4.97E-Ol L57E+OO u WG MW-21 400508014 6/28/2016 Co-60 -6.40E-Ol 4.90E-Ol 1.46E+OO u WG MW-21 400508014 . 6/28/2016 Cr-51 3.58E+OO 4.88E+OO 1.60E+Ol u WG MW-21 400508014 6/28/2016 Cs-134 7.25E-Ol 5.20E-Ol L66E+OO u WG MW-21 400508014 6/28/2016 Cs-137 -2.19E-01 4.59E-Ol 1.49E+OO u WG MW-21 400508014 6/28/2016 Fe-59 -3.88E-01 9.38E-01 3.06E+OO u WG MW-21 400508014 6/28/2016 H-3 5.78E+02 4.86E+02 1.48E+03 u WG MW-21 400508014 6/28/2016 I-131 9.78E-Ol l.43E+OO 4.48E+OO u WG MW-21 400508014 6/28/2016 K-40 4.38E+OO l.06E+Ol l.33E+Ol u WG MW-21 400508014 6/28/2016 La-140 3.68E-02 9.60E-Ol 3.22E+OO u WG MW-21 400508014 6/28/2016 Mn-54 -7.15E-Ol 4.54E-Ol 1.31E+OO u WG MW-21 400508014 6/28/2016 Nb-95 -3.58E-Ol 7.38E-Ol l.60E+OO u WG MW-21 400508014 6/28/2016 Ru-103 -6.07E-Ol 6.16E-Ol l.71E+OO u WG MW-21 400508014 6/28/2016 Ru-106 -4.67E+OO 4.07E+OO l.27E+Ol u WG MW-21 400508014 6/28/2016 Sb-124 8.97E-Ol l.08E+OO 3.64E+OO u WG MW-21 400508014 6/28/2016 Sb-125 -1.27E+OO l.24E+OO 3.77E+OO u WG MW-21 400508014 6/28/2016 Se-75 l.41E-Ol 5.93E-Ol l.97E+OO u WG MW-21 400508014 6/28/2016 Th-228 -2.52E+OO l.36E+OO 2.93E+OO u WG MW-21 400508014 6/28/2016 Zn-65 -7.73E-01 l.03E+OO 2.79E+OO u WG MW-21 400508014 6/28/2016 Zr-95 -9.41E-01 8.46E-Ol 2.59E+OO u WG SG-1 400508015 6/29/2016 Ac-228 2.50E+OO 3.83E+OO 4.99E+OO u WG SG-1 400508015 6/29/2016 Ag-108m 2.88E-01 4.32E-01 l.33E+OO U WG SG-1 400508015 6/29/2016 Ag-llOm -7.08E-01 5.83E-Ol l.81E+OO U WG SG-1 400508015 6/29/2016 ALPHA l.90E+OO 2.lOE+OO 6.46E+OO U DL WG SG-1 400508015 6/29/2016 Ba-140 -2.03E+OO 2.72E+OO 8.75E+OO U WG SG-1 400508015 6/29/2016 Be-7 -2.14E+OO 4.05E+OO l.33E+Ol U WG SG-1 400508015 6/29/2016 BETA 4.61E+OO l.24E+OO 3.29E+OO WG SG-1 400508015 6/29/2016 Ce-141 5.66E-01 l.55E+OO 2.92E+OO u WG SG-1 400508015 6/29/2016 Ce-144 7.30E-02 3.03E+OO l.02E+Ol u WG SG-1 400508015 6/29/2016 Co-57 3.05E-Ol 4.05E-01 l.36E+OO u WG SG-1 400508015 6/29/2016 Co-58 6.92E-01 5.21E-01 1.52E+OO u WG SG-1 400508015 6/29/2016 Co-60 -5.13E-01 4.58E-01 l.38E+OO u WG SG-1 400508015 6/29/2016 Cr-51 -4.48E+OO 5.02E+OO l.57E+Ol u WG SG-1 400508015 6/29/2016 Cs-134 -l.24E-01 5.04E-Ol l.46E+OO u WG SG-1 400508015 6/29/2016 Cs-137 8.17E-01 l.OOE+OO l.46E+OO U WG SG-1 400508015 6/29/2016 Fe-59 -9.47E-01 l.OOE+OO 2.77E+OO U D-134 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-1 400508015 6/29/2016 H-3 4.65E+02 4.90E+02 1.52E+03 u WG SG-1 400508015 6/29/2016 I-131 -2.39E+OO 1.40E+OO 3.96E+OO u WG SG-1 400508015 6/29/2016 K-40 2.64E+Ol l.17E+Ol l.39E+Ol U1 WG SG-1 400508015 6/29/2016 La-140 l.OIE-01 9.0IE-01 3.03E+OO u WG SG-1 400508015 6/29/2016 Mn-54 -l.08E-01 4.42E-01 1.41E+OO u WG SG-1 400508015 6/29/2016 Nb-95 1.62E+OO 5.87E-01 1.59E+OO U1 WG SG-1 400508015 6/29/2016 Ru-103 -2.63E-01 5.84E-Ol 1.66E+OO u WG SG-1 400508015 6/29/2016 Ru-106 9.09E+OO 4.97E+OO 1.36E+Ol u WG SG-1 400508015 6/29/2016 Sb-124 -1.20E+OO 1.1 IE+OO 3.42E+OO u WG SG-1 400508015 6/29/2016 Sb-125 2.06E-OI l.19E+OO 4.00E+OO u WG SG-1 400508015 6/29/2016 Se-75 3.89E-01 6.34E-01 2.07E+OO u WG SG-1 400508015 6/29/2016 Th-228 l.lOE+OO 1.59E+OO 2.70E+OO u WG SG-1 400508015 6/29/2016 Zn-65 -3.19E-01 l.57E+OO 2.73E+OO u WG SG-1 400508015 6/29/2016 Zr-95 l.07E+OO 6.84E-01 2.59E+OO u WG SG-2 400508016 6/29/2016 Ac-228 -2.15E+OO 3.62E+OO 7.12E+OO u WG SG-2 400508016 6/29/2016 Ag-108m -2.95E-OI 4.95E-01 1.59E+OO u WG SG-2 400508016 6/29/2016 Ag-llOm -l.08E+OO 7.97E-OI 2.35E+OO u WG SG-2 400508016 6/29/2016 ALPHA -2.43E+OO 1.22E+OO 4.40E+OO u DL WG SG-2 400508016 6/29/2016 Ba-140 5.22E-01 3.75E+OO 1.22E+Ol u WG SG-2 400508016 6/29/2016 Be-7 -4.0IE+OO 5.20E+OO 1.64E+Ol u WG SG-2 400508016 6/29/2016 BETA 2.03E+OO 8.39E-01 2.55E+OO u WG SG-2 400508016 6/29/2016 Ce-141 1.50E+OO 1.23E+OO 3.52E+OO u WG SG-2 400508016 6/29/2016 Ce-144 -2.63E-Ol 3.69E+OO l.19E+Ol u WG SG-2 400508016 6/29/2016 Co-57 2.24E-Ol 4.73E-Ol 1.59E+OO u WG SG-2 400508016 6/29/2016 Co-58 7.0SE-01 6.45E-OI 1.92E+OO u WG SG-2 400508016 6/29/2016 Co-60 7.28E-01 5.92E-01 1.95E+OO u WG SG-2 400508016 6/29/2016 Cr-51 1.33E+Ol 6.66E+OO 2.03E+Ol u WG SG-2 400508016 6/29/2016 Cs-134 -4.32E-01 6.20E-01 l.97E+OO u WG SG-2 400508016 6/29/2016 Cs-137 -1.69E-01 5.51E-01 1.82E+OO u WG SG-2 400508016 6/29/2016 Fe-59 -l.26E+OO l.26E+OO 3.95E+OO u WG SG-2 400508016 6/29/2016 H-3 4.28E+02 4.66E+02 1.45E+03 u WG SG-2 400508016 6129/2016 I-131 -l.41E+OO l.52E+OO 4.85E+OO u WG SG-2 400508016 6/29/2016 K-40 2.25E+Ol 1.36E+Ol 1.80E+Ol ur WG SG-2 400508016 6/29/2016 La-140 l.66E+OO 1.3IE+OO 4.39E+OO u WG SG-2 400508016 6/29/2016 Mn-54 -l.86E-Ol 6.22E-01 l.72E+OO u WG SG-2 400508016 6/29/2016 Nb-95 1.0lE+OO 6.64E-01 1.83E+OO u WG SG-2 400508016 6/29/2016 Ru-103 -5.09E-01 7.68E-01 2.09E+OO u WG SG-2 400508016 6/29/2016 Ru-106 2.30E+OO 5.03E+OO 1.70E+Ol u WG SG-2 400508016 6/29/2016 Sb-124 1.48E+OO 1.53E+OO 5.14E+OO u WG SG-2 400508016 6/29/2016 Sb-125 3.77E-01 1.46E+OO 4.84E+OO u WG SG-2 400508016 6/29/2016 Se-75 6.89E-OI 7.74E-01 2.48E+OO u WG SG-2 400508016 6129/2016 Th-228 9.82E-01 2.09E+OO 4.00E+OO u WG SG-2 400508016 6/29/2016 Zn-65 -l.46E+OO l.22E+OO 3.72E+OO u WG SG-2 400508016 6/29/2016 Zr-95 -5.80E-02 l.OIE+OO 3.35E+OO u WG SG-4 400508017 6/29/2016 Ac-228 7.62E-02 3.64E+OO 5.45E+OO u WG SG-4 400508017 6/29/2016 Ag-108m 7.40E-OI 4.90E-01 J.38E+OO u WG SG-4 400508017 6/29/2016 Ag-llOm -3.45E-01 6.68E-OI 2.02E+OO u WG SG-4 400508017 6/29/2016 ALPHA -7.36E+OO 2.09E+OO 7.84E+OO u DL WG SG-4 400508017 6/29/2016 Ba-140 -2.42E+OO 3.18E+OO 9.88E+OO u WG SG-4 400508017 6/29/2016 Be-7 2.89E-OI 4.22E+OO 1.37E+OI u D-135 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-4 400508017 6/29/2016 BETA 4.09E+OO l.18E+OO 3.38E+OO WG SG-4 400508017 6/29/2016 Ce-141 -2.55E-01 l.56E+OO 3.04E+OO u WG SG-4 400508017 6/29/2016 Ce-144 -8.95E-01 3.21E+OO 1.03E+Ol u WG SG-4 400508017 6/29/2016 Co-57 -4.70E-01 4.41E-01 l.36E+OO u WG SG-4 400508017 6/29/2016 Co-58 -9.60E-01

5. lOE-01 1.43E+OO u WG SG-4 400508017 6/29/2016 Co-60 -6.35E-02 4.44E-01 1.48E+OO u WG SG-4 400508017 6/29/2016 Cr-51 4.72E+OO 5.14E+OO 1.69E+Ol u WG SG-4 400508017 6/29/2016 Cs-134 3.73E-01 4.65E-01 1.55E+OO u WG SG-4 400508017 6/29/2016 Cs-137 -8.78E-01 5.0lE-01 l.46E+OO u WG SG-4 400508017 6/29/2016 Fe-59 -5.21E-Ol 9.77E-01 3.08E+OO u WG SG-4 400508017 6/29/2016 H-3 l.35E+02 4.39E+02 l.42E+03 u WG SG-4 400508017 6/29/2016 1-131 9.23E-Ol l.41E+OO 4.lOE+OO u WG SG-4 400508017 6/29/2016 K-40 6.14E+OO l.03E+Ol l.34E+Ol u WG SG-4 400508017 6/29/2016 La-140 -6.45E-Ol 9.73E-Ol 3.08E+OO u WG SG-4 400508017 6/29/2016 Mn-54 -l.65E-Ol 4.45E-01 l.45E+OO u WG SG-4 400508017 6/29/2016 Nb-95 9.42E-Ol l.OlE+OO l.56E+OO u WG SG-4 400508017 6/29/2016 Ru-103 -5.50E-01 5.67E-01 l.75E+OO u WG SG-4 400508017 6/29/2016 Ru-106 2.42E+OO 4.16E+OO l.41E+Ol u WG SG-4 400508017 6/29/2016 Sb-124 -3.25E-Ol l.30E+OO 3.58E+OO u WG SG-4 400508017 6/29/2016 Sb-125 2.29E+OO l.82E+OO 4.14E+OO u WG SG-4 400508017 6/29/2016 Se-75 5.45E-Ol 6.27E-01 2.09E+OO u WG SG-4 400508017 6/29/2016 Th-228 -l.43E-01 l.50E+OO 3.27E+OO u WG SG-4 400508017 6/29/2016 Zn-65 -3.44E+OO l.38E+OO 2.66E+OO u WG SG-4 400508017 6/29/2016 Zr-95 -8.78E-01 8.12E-01 2.53E+OO u WG SG-5 400508018 6/29/2016 Ac-228 -3.37E+OO 3.25E+OO 7.09E+OO u WG SG-5 400508018 6/29/2016 Ag-108m l.OOE-01 4.64E-01 l.50E+OO u WG 400508018 6/29/2016 Ag-llOm 8.78E-01 6.90E-01 2.23E+OO u WG SG-5 400508018 6/29/2016 ALPHA l.39E+OO l.04E+OO 3.17E+OO u WG SG-5 400508018 6/29/2016 Ba-140 6.02E+OO 3.55E+OO l.14E+Ol u WG SG-5 400508018 6/29/2016 Be-7 4.39E+OO 4.63E+OO l.48E+Ol u WG SG-5 400508018 6/29/2016 BETA 9.53E+OO l.20E+OO i.4.0E+OO WG SG-5 400508018 6/29/2016 Ce-141 l.12E+OO l.60E+OO 3.06E+OO u WG SG-5 400508018 6/29/2016 Ce-144 2.42E+OO 3.64E+OO 1.17E+Ol u WG SG-5 400508018 6/29/2016 Co-57 5.33E-01 5.00E-01 l.59E+OO u WG SG-5 400508018 6/29/2016 Co-58 -1.0lE+OO 5.69E-01 1.58E+OO u WG SG-5 400508018 6/29/2016 Co-60 8.32E-Ol 5.60E-01 l.83E+OO u WG SG-5 400508018 6/29/2016 Cr-51 -1.lOE+OO 5.40E+OO l.77E+Ol u WG SG-5 400508018 6/29/2016 Cs-134 -4.91E-02 5.43E-01 l.77E+OO u WG SG-5 400508018 6/29/2016 Cs-137 -3.69E-Ol 5.35E-01 l.72E+OO u WG SG-5 400508018 6/29/2016 Fe-59 3.20E+OO l.44E+OO 3.90E+OO u WG SG-5 400508018 6/29/2016 H-3 7.81E+02 5.07E+02 l.51E+03 u WG SG-5 400508018 6/29/2016 1-131 2.89E-Ol l.35E+OO 4.42E+OO u WG SG-5 400508018 6/29/2016 K-40 l.89E+Ol l.22E+Ol l.57E+Ol UI WG SG-5 400508018 6/29/2016 La-140 3.24E-Ol l.22E+OO 3.97E+OO u WG SG-5 400508018 6/29/2016 Mn-54 -4. lOE-01 5.06E-01 l.58E+OO u WG SG-5 400508018 6/29/2016 Nb-95 -l.26E+OO 9.09E-01 l.82E+OO u WG SG-5 400508018 6/29/2016 Ru-103 4.95E-01 6.46E-Ol l.92E+OO u WG SG-5 400508018 6/29/2016 Ru-106 3.77E+OO 4.59E+OO l.53E+Ol u WG SG-5 400508018 6/29/2016 Sb-124 -7.68E-02 l.30E+OO 4.32E+OO u WG SG-5 400508018 6/29/2016 Sb-125 -l.53E+OO l.42E+OO 4.32E+OO u D-136 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS .. TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-5 400508018 6/29/2016 Se-75 1.46E-02 6.96E-01 2.32E+OO u WG SG-5 400508018 6/29/2016 Th-228 l.29E+OO 2.0lE+OO 3.54E+OO u WG SG-5 400508018 6/29/2016 Zn-65 2.13E+OO 6.29E-01 3.55E+OO u WG SG-5 400508018 6/29/2016 Zr-95 5.92E-02 9.44E-01 3.lOE+OO u WG W-4 400809001 6/30/2016 Ac-228 -6.27E+OO 3.61E+OO 7.52E+OO u WG W-4 400809001 6/30/2016 Ag-108m 4.17E-01 4.96E-01 1.60E+OO u WG W-4 400809001 6/30/2016 Ag-llOm 6.23E-01 8.12E-01 2.32E+OO u WG W-4 400809001 6/30/2016 Ba-140 3.21E+OO 3.53E+OO 1.19E+Ol u WG W-4. 400809001 6/30/2016 Be-7 2.llE+OO 5.20E+OO 1.68E+Ol u WG W-4 400809001 6/30/2016 Ce-141 2.30E+OO 1.33E+OO 3.61E+OO u WG W-4 400809001 6/30/2016 Ce-144 -1.44E+OO 3.88E+OO 1.24E+Ol u WG W-4 400809001 6/30/2016 Co-57 l.09E-01 5.02E-01 1.63E+OO u WG W-4 400809001 6/30/2016 Co-58 -1.33E+OO 7.15E-01 1.73E+OO u WG W-4 400809001 6/30/2016 Co-60 -8.94E-01 7.0lE-01 1.72E+OO u .WG W-4 400809001 6/30/2016 Cr-51 -3.33E+OO 5.96E+OO 1.92E+Ol u WG W-4 400809001 6/30/2016 Cs-134 -4.37E-01 6.57E-01 1.87E+OO u WG W-4 400809001 6/30/2016 Cs-137 3.22E-Ol 6.1 lE-01 l.78E+OO u WG W-4 400809001 6/30/2016 Fe-59 -2.26E-01 1.45E+OO 4.12E+OO u WG W-4 400809001 6/30/2016 H-3 2.86E+02 3.14E+02 9.88E+02 u WG W-4 400809001 6/30/2016 I-131 9.81E-01 1.56E+OO 5.lOE+OO u WG W-4 400809001 6/30/2016 K-40 3.65E+Ol 1.38E+Ol 1.74E+Ol WG W-4 400809001 6/30/2016 La-140 -3.08E-02 1.21E+OO 3.89E+OO u WG W-4 400809001 6/30/2016 Mn-54 -7.41E-Ol 5.69E-Ol 1.69E+OO u WG W-4 400809001 6/30/2016 Nb-95 -3.19E+OO 1.16E+OO 1.73E+OO u WG W-4 400809001 6/30/2016 Ru-103 -4.86E-Ol 7.08E-01 2.0lE+OO u WG W-4 400809001 6/30/2016 Ru-106 6.06E+OO 4.86E+OO 1.60E+Ol u WG W-4 400809001 6/30/2016 Sb-124 -3.86E-01 1.29E+OO 4.23E+OO u WG W-4 400809001 6/30/2016 Sb-125 -1.90E+OO 1.55E+OO 4.64E+OO u WG W-4 400809001 6/30/2016 Se-75 5.59E-01 7.47E-01 2.48E+OO u WG W-4 400809001 6/30/2016 Th-228 5.75E+OO 2.00E+OO 3.31E+OO WG W-4 400809001 6/30/2016 Zn-65 -1.81E+OO L26E+OO 3.72E+OO u WG W-4 400809001 6/30/2016 Zr-95 4.56E-01 1.00E+OO 3.32E+OO u WG W-5 400809002 6/30/2016 Ac-228 -3.40E+OO 3.23E+OO 5.90E+OO u WG W-5 400809002 6/30/2016 Ag-108m 1.86E-01 3.74E-01 1.22E+OO u WG W-5 400809002 6/30/2016 Ag-llOm 5.08E-01 6.44E-01 1.85E+OO u WG W-5 400809002 6/30/2016 Ba-140 -1.36E+OO 2.87E+OO 9.55E+OO u WG W-5 400809002 6/30/2016 Be-7 3.12E+OO 4.0lE+OO 1.29E+Ol u WG W-5 400809002 6/30/2016 Ce-141 4.62E-01 8.83E-01 2.81E+OO u WG W-5 400809002 6/30/2016 Ce-144 6.07E-01 3.92E+OO 9.26E+OO u WG W-5 400809002 6/30/2016 Co-57 3.0lE-01 3.74E-01 1.19E+OO u WG W-5 400809002 6/30/2016 Co-58 -3.38E-01 4.59E-01 1.46E+OO u WG W-5 400809002 6/30/2016 Co-60 -l.14E+OO 8.67E-01 1.44E+OO u WG W-5 400809002 6/30/2016 Cr-51 2.32E+OO 4.65E+OO 1.53E+Ol u WG W-5 400809002 6/30/2016 Cs-134 6.23E-01 4.84E-01 1.57E+OO u WG W-5 400809002 6/30/2016 Cs-137 9.75E-01 5.04E-01 1.36E+OO u WG W-5 400809002 6/30/2016 Fe-59 3.69E-01 9.26E-01 3.0lE+OO u WG W-5 400809002 6/30/2016 H-3 1.99E+02 3.12E+02 9.96E+02 u WG W-5 400809002 6/30/2016 I-131 -4.57E-01 1.29E+OO 4.17E+OO u WG W-5 400809002 6/30/2016 K-40 7.03E-01 9.44E+OO 1.22E+Ol u WG W-5 400809002 6/30/2016 La-140 6.66E-01 9.52E-01 3.16E+OO u D-137 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC *FLAGS TYPE STATION LSN DATE . NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-5 400809002 6/30/2016 Mn-54 -2.34E-01 4.13E-01 l.32E+OO u WG W-5 400809002 6/30/2016 Nb-95 8.16E-01 4.85E-Ol l.54E+OO u WG W-5 400809002 6/30/2016 Ru-103 -2.18E-01 5.91E-Ol l.63E+OO u WG W-5 400809002 6/30/2016 Ru-106 -2.79E+OO 3.85E+OO l.25E+Ol u WG W-5 400809002 6/30/2016 Sb-124 -l.25E+OO LlOE+OO 3.28E+OO u WG W-5 400809002 6/30/2016 Sb-125 4.27E-Ol l.14E+OO 3.70E+OO u WG W-5 400809002 6/30/2016 Se-75 l.50E+OO l.03E+OO l.88E+OO u WG W-5 400809002 6/30/2016 Th-228 2.26E-01 l.32E+OO 2.82E+OO u WG W-5 400809002 6/30/2016 Zn-65 l.28E+OO 6.87E-Ol 2.32E+OO u WG W-5 400809002 6/30/2016 Zr-95 8.52E-01 8.lOE-01 2.67E+OO u WG W-6 400809003 6/30/2016 Ac-228 3.39E-01 4.29E+OO 7.15E+OO u WG W-6 400809003 6/30/2016 Ag-108m -2.62E-Ol 5.28E-01 l.50E+OO u WG W-6 400809003 6/30/2016 Ag-llOm -5.79E-Ol 7.31E-01 2.31E+OO u WG W-6 400809003 6/30/2016 Ba-140 5.39E+OO 3.74E+OO 1.19E+Ol u WG W-6 400809003 6/30/2016 Be-7 8.57E+OO 5.23E+OO 1.65E+Ol u WG W-6 400809003 6/30/2016 Ce-141 l.32E+OO 1.00E+OO 3.05E+OO u WG W-6 400809003 6/30/2016 Ce-144 -l.62E+OO 2.95E+OO 9.86E+OO u WG W-6 400809003 6/30/2016 Co-57 -4.37E-Ol 4.12E-01 l.25E+OO u WG W-6 400809003 6/30/2016 Co-58 -6.77E-Ol 5.44E-Ol 1.66E+OO u WG W-6 400809003 6/30/2016 Co-60 -2.30E-Ol 5.51E-01 l.79E+OO u WG W-6 400809003 6/30/2016 Cr-51 -5.83E+OO 5.66E+OO l.73E+Ol u WG W-6 400809003 6/30/2016 Cs-134 6.62E-Ol 5.70E-Ol l.88E+OO u WG W-6 400809003 6/30/2016 Cs-137 8.53E-01 6.64E-Ol l.85E+OO u WG W-6 400809003 6/30/2016 Fe-59 l.53E+OO l.46E+OO 4.09E+OO u WG W-6 400809003 6/30/2016 H-3 -6.91E+OO 3.08E+02 l.01E+03 u WG W-6 400809003 6/30/2016 I-131 2.64E-Ol l.47E+OO 4.94E+OO u WG W-6 400809003 6/30/2016 K-40 2.27E+Ol 1.06E+Ol l.72E+Ol UI WG W-6 400809003 6/30/2016 La-140 -3.53E+OO 1.50E+OO 3.56E+OO u WG W-6 400809003 6/30/2016 Mn-54 5.0lE-01 5.20E-01 9.88E-01 u WG W-6 400809003 6/30/2016 Nb-95 5.64E-01 5.69E-01 l.89E+OO u WG W-6 400809003 6/30/2016 Ru-103 -6.70E-01 7.09E-01 l.92E+OO u WG W-6 400809003 6/30/2016 Ru-106 l.65E+OO 4.67E+OO l.52E+Ol u WG W-6 400809003 6/30/2016 Sb-124 -3.62E-01 1.40E+OO 4.61E+OO u WG W-6 400809003 6/30/2016 Sb-125 -4.42E-01 l.58E+OO 4.54E+OO u WG W-6 400809003 6/30/2016 Se-75 -1.08E+OO 1.08E+OO 2.27E+OO u WG W-6 400809003 6/30/2016 Th-228 l.93E+OO 1.62E+OO 3.00E+OO u WG W-6 400809003 6/30/2016 Zn-65 6.47E-Ol l.32E+OO 3.70E+OO U WG W-6 400809003 6/30/2016 Zr-95 l.14E+OO 1.0lE+OO 3.34E+OO U WG W-4 407792001 1017/2016 Ac-228 l.98E+OO 3.23E+OO 7.85E+OO U WG W-4 407792001 1017/2016 Ag-108m 2.99E-01 4.65E-01 l.59E+OO U WG W-4 407792001 1017/2016 Ag-llOm 4.23E-01 6.67E-01 2.22E+OO U WG W-4 407792001 1017/2016 Ba-140 9.74E-Ol 2.83E+OO 9.59E+OO U WG W-4 407792001 1017/2016 Be-7 2.04E+OO 4.68E+OO l.59E+Ol U WG W-4 407792001 1017/2016 Ce-141 -7.54E-01 1.05E+OO 3.28E+OO U WG W-4 407792001 1017/2016 Ce-144 -6.57E-Ol 3.67E+OO l.18E+Ol U WG W-4 407792001 1017/2016 Co-57 2.48E-Ol 4.75E-Ol l.54E+OO U WG W-4 407792001 1017/2016 Co-58 6.26E-01 5.41E-01 l.80E+OO U WG W-4 407792001 1017/2016 Co-60 -l.81E-Ol 6.0lE-01 l.64E+OO U WG W-4 407792001 1017/2016 Cr-51 6.31E+OO 5.34E+OO 1.82E+Ol U WG W-4 407792001 1017/2016 Cs-134 3.33E-01 5.35E-01 1.79E+OO U 0-138 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-4 407792001 10/7/2016 Cs-137 3.46E-01 5.45E-01 1.83E+OO u WG W-4 407792001 10/7/2016 Fe-59 -l.28E+OO l.06E+OO 3.03E+OO u WG W-4 407792001 10/7/2016 H-3 -5.43E+Ol 5.92E+02 I.96E+03 u WG W-4 407792001 10/7/2016 I-131 -l.07E-01 9.75E-01 3.33E+OO u WG W-4 407792001 1017/2016 K-40 1.15E+Ol I.25E+Ol l.31E+Ol u WG W-4 407792001 1017/2016 La-140 -1.34E+OO 9.28E-01 2.66E+OO u WG W-4 407792001 1017/2016 Mn-54 -3.21E-01 4.62E-01 1.44E+OO u WG W-4 407792001 1017/2016 Nb-95 1.42E+OO 1.30E+OO l.70E+OO u WG W-4 407792001 1017/2016 Ru-103 -1.30E+OO 6.30E-01 1.72E+OO u WG W-4 407792001 10/7/2016 Ru-106 -7.81E+OO 4.79E+OO l.37E+Ol u WG W-4 407792001 1017/2016 Sb-124 2.0lE+OO 1.08E+OO 3.77E+OO u WG W-4 407792001 1017/2016 Sb-125 -4.83E-01 1.34E+OO 4.47E+OO u WG W-4 407792001 1017/2016 Se-75 1.85E-01 7.35E-01 2.32E+OO u WG W-4 407792001 1017/2016 Th-228 1.59E+OO I.81E+OO 3.18E+OO u WG W-4 407792001 10/7/2016 Zn-65 -1.76E+OO 1.12E+OO 3.00E+OO u WG W-4 407792001 1017/2016 Zr-95 2.47E+OO l.08E+OO 3.36E+OO u WG W-5 407792002 10/7/2016 Ac-228 -9.29E+OO 4.29E+OO 8.59E+OO u WG W-5 407792002 1017/2016 Ag-108m -9.57E-02 6.14E-01 2.08E+OO u WG W-5 407792002 10/7/2016 Ag-llOm -l.17E+OO 1.13E+OO 3.24E+OO u WG W-5 407792002 1017/2016 Ba-140 -2.36E+OO 3.45E+OO l.09E+OI u WG W-5 407792002 1017/2016 Be-7 -3.61E+OO 6.27E+OO 2.04E+Ol u WG W-5 407792002 1017/2016 Ce-141 -3.39E+OO 1.73E+OO 4.15E+OO u WG W-5 407792002 1017/2016 Ce-144 -4.63E+OO 4.66E+OO l.46E+Ol u WG W-5 407792002 1017/2016 Co-57 -7.17E-02 6.21E-01 2.07E+OO u WG W-5 407792002 1017/2016 Co-58 -9.91E-OI 7.05E-01 1.87E+OO U WG W-5 407792002 10/7/2016 Co-60 5.87E-04 6.56E-01 2.20E+OO U WG W-5 407792002 1017/2016 Cr-51 9.60E+OO 7.02E+OO 2.27E+Ol U WG W-5 407792002 1017/2016 Cs-134 -9.86E-Ol 9.37E-01 2.74E+OO U WG W-5 407792002 1017/2016 Cs-137 l.28E+OO 8.08E-01 2.77E+OO U WG W-5 407792002 1017/2016 Fe-59 7.81E-OI 1.71E+OO 5.62E+OO U WG W-5 407792002 10/7/2016 H-3 -3.24E+02 5.89E+02 I.99E+03 U WG W-5 407792002 1017/2016 I-131 4.35E-01 I.42E+OO 4.50E+OO U WG W-5 407792002 10/7/2016 K-40 3.25E+OO 1.17E+Ol 4.20E+Ol U WG W-5 407792002 10/7/2016 La-140 l.72E+OO 1.45E+OO 5.IOE+OO U WG W-5 407792002 1017/2016 Mn-54 1.62E+OO l.50E+OO 2.66E+OO U WG W-5 407792002 1017/2016 Nb-95 -2.41E-03 9.66E-01 2.78E+OO U WG W-5 407792002 1017/2016 Ru-103 8.50E-02 8.33E-01 2.55E+OO U WG W-5 407792002 1017/2016 Ru-106 5.93E+OO 6.58E+OO 2.27E+Ol U WG W-5 407792002 1017/2016 Sb-124 -2.06E+OO 1.94E+OO 5.39E+OO U WG W-5 407792002 1017/2016 Sb-125 1.58E+OO 2.0IE+OO 7.02E+OO U WG W-5 407792002 1017/2016 Se-75 2.87E-OI 1.0lE+OO 3.27E+OO U WG W-5 407792002 1017/2016 Th-228 3.28E+OO 2.31E+OO 4.25E+OO U WG W-5 407792002 1017/2016 Zn-65 3.14E+OO I.90E+OO 5.98E+OO U WG W-5 407792002 1017/2016 Zr-95 -8.83E-Ol 1.14E+OO 3.39E+OO U WG W-6 407792003 1017/2016 Ac-228 l.82E+OO 4.82E+OO 1.19E+Ol U WG W-6 407792003 1017/2016 Ag-108m 2.40E-03 7.37E-01 2.45E+OO U WG W-6 407792003 10/7/2016 Ag-110111 2.38E-01 1.0lE+OO 3.45E+OO U WG W-6 407792003 1017/2016 Ba-140 -6.44E+OO 4.SOE+OO 1.18E+Ol U WG W-6 407792003 1017/2016 Be-7 -5.92E+OO 7.00E+OO 2.16E+Ol U WG W-6 407792003 1017/2016 Ce-141 -2.03E+OO 1.96E+OO 5.18E+OO U 0-139 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-6 407792003 1017/2016 Ce-144 4.78E+OO 5.86E+OO l.90E+Ol u WG W-6 407792003 1017/2016 Co-57 4.89E-02 7.30E-01 2.36E+OO u WG W-6 407792003 1017/2016 Co-58 l.16E-01 7.84E-01 2.69E+OO u WG W-6 407792003 1017/2016 Co-60 5.28E-01 8.22E-01 2.81E+OO u WG W-6 407792003 1017/2016 Cr-51 l.91E+Ol 8.95E+OO 2.86E+Ol u WG W-6 407792003 1017/2016 Cs-134 l.93E+OO l.57E+OO 3.37E+OO u WG W-6 407792003 1017/2016 Cs-137 -8.00E-01 8.83E-01 2.61E+OO u WG W-6 407792003 1017/2016 Fe-59 7.94E-01 l.86E+OO 5.64E+OO u WG W-6 407792003 1017/2016 H-3 -9.01E+02 5.64E+02 l.99E+03 u WG W-6 407792003 1017/2016 I-131 -1.51E+OO 1.39E+OO 4.27E+OO u WG W-6 407792003 1017/2016 K-40 5.00E+OO 1.30E+Ol 4.51E+Ol u WG W-6 407792003 1017/2016 La-140 l.02E+OO l.57E+OO 5.26E+OO u WG W-6 407792003 1017/2016 Mn-54 6.99E-Ol 7.69E-01 2.69E+OO u WG W-6 407792003 1017/2016 Nb-95 -l.03E+OO 9.03E-01 2.54E+OO u WG W-6 407792003 1017/2016 Ru-103 -6.68E-01 9.32E-Ol 2.91E+OO u WG W-6 407792003 1017/2016 Ru-106 -7.05E+OO 7.55E+OO 2.24E+Ol u WG W-6 407792003 1017/2016 Sb-124 l.62E+OO l.99E+OO 6.81E+OO u WG W-6 407792003 1017/2016 Sb-125 -2.33E+OO 2.38E+OO 7.36E+OO u WG W-6 407792003 1017/2016 Se-75 -1.05E+OO l.05E+OO 3.38E+OO u WG W-6 407792003 1017/2016 Th-228 l.78E+OO 2.0lE+OO 5.70E+OO u WG W-6 407792003 1017/2016 Zn-65 -4.33E-Ol 1.70E+OO 4.79E+OO u WG W-6 407792003 1017/2016 Zr-95 1.02E-Ol l.51E+OO 4.81E+OO u WG W-1 408799001 10/20/2016 Ac-228 -1.0lE+Ol 4.87E+OO l.12E+Ol u WG W-1 408799001 10/20/2016 Ag-108m l.92E+OO l.40E+OO 3.40E+OO u WG W-1 408799001 10/20/2016 Ag-llOm -l.02E+OO l.15E+OO 3.24E+OO u WG W-1 408799001 10/20/2016 Ba-140 -l.96E+OO 5.65E+OO l.85E+Ol u WG W-1 408799001 10/20/2016 Be-7 -1.34E+OO 9.62E+OO 3.22E+Ol u WG W-1 408799001 10/20/2016 Ce-141 -l.06E+OO 2.15E+OO 6.73E+OO u WG W-1 408799001 10/20/2016 Ce-144 -7.95E+OO 7.77E+OO 2.33E+Ol u WG W-1 408799001 10/20/2016 Co-57 -8.64E-Ol l.09E+OO 3.08E+OO u WG W-1 408799001 10/20/2016 Co-58 5.64E-Ol 9.54E-Ol 3.00E+OO u WG W-1 408799001 10/20/2016 Co-60 l.29E+OO 9.98E-Ol 3.57E+OO u WG W-1 408799001 10/20/2016 Cr-51 -l.04E+Ol 9.86E+OO 3.12E+Ol u WG W-1 408799001 10/20/2016 Cs-134 2.70E+OO 1.70E+OO 3.63E+OO u WG W-1 408799001 10/20/2016 Cs-137 2.32E+OO l.21E+OO 4.15E+OO u WG W-1 408799001 10/20/2016 Fe-59 -4.16E-Ol 2.16E+OO 6.78E+OO u WG W-1 408799001 10/20/2016 H-3 -l.47E+02 5.39E+02 l.80E+03 u WG W-1 408799001 10/20/2016 I-131 -7.20E-02 l.60E+OO 4.92E+OO u WG W-1 408799001 10/20/2016 K-40 l.72E+Ol l.90E+Ol 2.84E+Ol u WG W-1 408799001 10/20/2016 La-140 7.54E-Ol l.88E+OO 6.57E+OO u WG W-1 408799001 10/20/2016 Mn-54 2.57E-01 l.05E+OO 3.49E+OO u WG W-1 408799001 10/20/2016 Nb-95 -l.75E+OO l.28E+OO 3.55E+OO u WG W-1 408799001 10/20/2016 Ru-103 -l.02E+OO l.02E+OO 3.08E+OO u WG W-1 408799001 10/20/2016 Ru-106 -5.47E+OO 9.45E+OO 2.98E+Ol u WG W-1 408799001 10/20/2016 Sb-124 -l.61E+OO 2.15E+OO 6.26E+OO u WG W-1 408799001 10/20/2016 Sb-125 l.95E+OO 2.67E+OO 9.35E+OO u WG W-1 408799001 1012012016 Se-75 -8.64E-02 l.56E+OO 4.87E+OO u WG W-1 408799001 10/20/2016 Th-228 6.97E+OO 3.54E+OO 8.87E+OO u WG W-1 408799001 10/20/2016 Zn-65 l.98E+OO l.87E+OO 6.20E+OO u WG W-1 408799001 10/20/2016 Zr-95 -3.37E-Ol l.87E+OO 6.04E+OO u D-140 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. :MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-7 408799002 10/20/2016 Ac-228 6.77E+OO 4.68E+OO 1.61E+Ol u WG W-7 408799002 10/20/2016 Ag-108m 7.54E-01 9.02E-01 2.91E+OO u WG W-7 408799002 10/20/2016 Ag-llOm -1.30E-01 l.54E+OO 4.39E+OO u WG W-7 408799002 10/20/2016 Ba-140 1.03E+OO 3.76E+OO 1.29E+Ol u WG W-7 408799002 10/20/2016 Be-7 -6.69E-01 8.45E+OO 2.83E+Ol u WG W-7 408799002 10/20/2016 Ce-141 1.28E+OO 1.93E+OO 6.05E+OO u WG W-7 408799002 10/20/2016 Ce-144 1.52E+OO 6.54E+OO 2.14E+Ol u WG W-7 408799002 10/20/2016 Co-57 -2.0SE-01 8.94E-Ol 2.87E+OO u WG W-7 408799002 10/20/2016 Co-58 3.75E-Ol 8.47E-Ol 2.89E+OO u WG W-7 408799002 10/20/2016 Co-60 O.OOE+OO 0.00E+OO 3.25E+OO u WG W-7 408799002 10/20/2016 Cr-51 -7.16E+OO 8.29E+OO 2.64E+Ol u WG W-7 408799002 10/20/2016 Cs-134 1.22E+OO l.16E+OO 4.04E+OO u WG W-7 408799002 10/20/2016 Cs-137 9.65E-01 9.42E-01 3.32E+OO u WG W-7 408799002 10/20/2016 Fe-59 8.25E-02 1.70E+OO 5.46E+OO u WG W-7 408799002 10/20/2016 H-3 -1.02E+02 5.44E+02 1.81E+03 u WG W-7 408799002 10/20/2016 I-131 -4.77E-01 1.78E+OO 5.99E+OO u WG W-7 408799002 10/20/2016 K-40 -1.79E-01 l.33E+Ol 4.93E+Ol u WG W-7 408799002 10/20/2016 La-140 1.16E+OO l.33E+OO 4.95E+OO u WG W-7 408799002 10/20/2016 Mn-54 6.3 lE-01 9.42E-Ol 3.23E+OO u WG W-7 408799002 10/20/2016 Nb-95 6.SSE-01 1.05E+OO 3.30E+OO u WG W-7 408799002 10/20/2016 Ru-103 -1.21E-01 9.41E-Ol 3.13E+OO u WG W-7 *408799002 10/20/2016 Ru-106 -3.07E+OO 8.42E+OO 2.37E+Ol u WG W-7 408799002 10/20/2016 Sb-124 2.68E+OO 2.47E+OO 9.14E+OO u WG W-7 408799002 10/20/2016 Sb-125 -2.00E+OO 2.67E+OO 7.36E+OO u WG W-7 408799002 10/20/2016 Se-75 -9.SOE-02 l.39E+OO 4.35E+OO u WG W-7 408799002 10/20/2016 Th-228 5.55E+OO 3.19E+OO 5.82E+OO u WG W-7 408799002 10/20/2016 Zn-65 1.34E+OO 1.90E+OO 6.04E+OO u WG W-7 408799002 10/20/2016 Zr-95 3.50E+OO 1.94E+OO 6.SOE+OO u WG W-8 408799003 10/19/2016 Ac-228 3.92E+OO 5.72E+OO 1.98E+Ol u WG W-8 408799003 10/19/2016 Ag-108m 1.71E+OO l.15E+OO 3.66E+OO u WG W-8 408799003 10/19/2016 Ag-llOm -2.85E+OO 1.73E+OO 3.92E+OO u WG W-8 408799003 10/19/2016 Ba-140 l.llE+Ol 6.04E+OO 2.lOE+Ol u WG W-8 408799003 10/19/2016 Be-7 7.77E+OO 1.0SE+Ol 3.67E+Ol u WG W-8 408799003 10119/2016 Ce-141 -5.74E+OO 2.77E+OO 6.86E+OO u WG W-8 408799003 10/19/2016 Ce-144 8.25E+OO 8.95E+OO 2.84E+Ol u WG W-8 408799003 10/19/2016 Co-57 -1.55E+OO 1.28E+OO 3.59E+OO u WG W-8 408799003

-10/19/2016-

-Co-58-----9.0SE"Ol ---2.16E+OO u-WG W-8 408799003 10/19/2016 Co-60 l.86E+OO l.09E+OO 3.76E+OO u WG W-8 408799003 10/19/2016 Cr-51 -1.62E+Ol 1.25E+Ol 3.67E+Ol u WG W-8 408799003 10/19/2016 Cs-134 4.70E-Ol 9.96E-Ol 3.36E+OO u WG W-8 408799003 10/19/2016 Cs-137 -2.15E+OO l.37E+OO 3.41E+OO u WG W-8 408799003 10/19/2016 Fe-59 -2.SOE+OO 2.87E+OO 7.79E+OO u WG W-8 408799003 10/19/2016 H-3 -8.73E+Ol 5.31E+02 1.76E+03 u WG W-8 408799003 10/19/2016 I-131 -1.51E+OO 2.0SE+OO 6.46E+OO u WG W-8 408799003 10/19/2016 K-40 1.33E+Ol 1.74E+Ol 5.92E+Ol u WG W-8 408799003 10119/2016 La-140 -4.42E-Ol 1.88E+OO 5.94E+OO u WG W-8 408799003 10119/2016 Mn-54 1.13E+OO l.02E+OO 3.18E+OO u WG W-8 408799003 10/19/2016 Nb-95 1.0SE+OO 1.06E+OO 3.67E+OO u WG W-8 408799003 10/19/2016 Ru-103 -8.43E-01 1.28E+OO 3.92E+OO u WG W-8 408799003 10119/2016 Ru-106 1.33E+Ol 1.09E+Ol 3.74E+Ol u D-141 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) . (pCi/L) WG W-8 408799003 10/19/2016 Sb-124 2.29E+OO 2.54E+OO 9.32E+OO u WG W-8 408799003 10/19/2016 Sb-125 2.0IE+OI 8.65E+OO 1.21E+Ol Ul WG W-8 408799003 10/19/2016 Se-75 4.64E-01 l.53E+OO 5.22E+OO u WG W-8 408799003 10/19/2016 Th-228 2.40E+OO 3.25E+OO 7.74E+OO u WG W-8 408799003 10/19/2016 Zn-65 -6.88E-01 1.91E+OO 6.lOE+OO u WG W-8 408799003 10/19/2016 Zr-95 6.22E-01 2.12E+OO 6.97E+OO u WG W-10 408799004 10/19/2016 Ac-228 -7.27E-01 5.14E+OO 1.66E+Ol u WG W-10 408799004 10/19/2016 Ag-108m 5.40E-01 9.19E-01 3.19E+OO u WG W-10 408799004 10/19/2016 Ag-llOm -l.12E-01 l.55E+OO 4.36E+OO u WG W-10 408799004 10/19/2016 Ba-140 -3.28E+OO 5.08E+OO 1.56E+Ol u WG W-10 408799004 10/19/2016 Be-7 8.79E+OO 9.54E+OO 3.33E+Ol u WG W-10 408799004 10/19/2016 Ce-141 -2.74E+OO 2.23E+OO 6.44E+OO u WG W-10 408799004 10/19/2016 Ce-144 1.28E+Ol 8.74E+OO 2.76E+Ol u .WG W-10 408799004 10/19/2016 Co-57 -6.68E-01 1.03E+OO 3.19E+OO u WG W-10 408799004 10/19/2016 Co-58 -3.57E-01 9.79E-01 2.61E+OO u WG W-10 408799004 10/19/2016 Co-60 3.73E-01 1.08E+OO 3.75E+OO u WG W-10 408799004 10/19/2016 Cr-51 -l.87E+OO 9.96E+OO 3.36E+Ol u WG W-10 408799004 10/19/2016 Cs-134 -2.66E-01 1.20E+OO 3.77E+OO u WG W-10 408799004 10/19/2016 Cs-137 -l.42E-01 9.76E-01 3.14E+OO u WG W-10 408799004 10/19/2016 Fe-59 3.38E+OO 2.46E+OO 8.92E+OO u WG W-10 408799004 10/19/2016 H-3 2.26E+02 5.51E+02 1.78E+03 u WG W-10 408799004 10/19/2016 I-131 -l.22E+OO 2.1 lE+OO 6.49E+OO u WG W-10 408799004 10/19/2016 K-40 1.71E+Ol 2.21E+Ol 3.48E+Ol u WG W-10 408799004 10/19/2016 La-140 3.89E+OO 2.12E+OO 7.90E+OO u WG W-10 408799004 10/19/2016 Mn-54 -8.68E-01 l.18E+OO 2.93E+OO u WG W-10 408799004 10/19/2016 Nb-95 9.03E-01 1.45E+OO 4.52E+OO u WG W-10 408799004 10/19/2016 Ru-103 -l.43E+OO l.26E+OO 3.70E+OO u WG W-10 408799004 10/19/2016 Ru-106 -7.20E+OO 9.33E+OO 2.78E+Ol u WG W-10 408799004 10/19/2016 Sb-124 l.54E+OO 2.27E+OO 8.22E+OO u WG W-10 408799004 10/19/2016 Sb-125 6.45E+OO 3.03E+OO l.04E+Ol u WG W-10 408799004 10/19/2016 Se-75 2.25E+OO l.63E+OO 5.26E+OO u WG W-10 408799004 10/19/2016 Th-228 3.97E+OO 3.70E+OO 6.86E+OO u WG W-10 408799004 10/19/2016 Zn-65 -7.29E+OO 3.81E+OO 7.21E+OO u WG W-10 408799004 10/19/2016 Zr-95 l.03E+OO l.85E+OO 6.30E+OO u WG W-11 408799005 10/19/2016 Ac-228 3.02E+OO 6.85E+OO 2.44E+Ol u WG W-11 408799005 10/19/2016 Ag-108m l.26E+OO 1.21E+OO 3.79E+OO u WG W-11 408799005 10/19/2016 Ag-llOm 7.23E-01 2.07E+OO 7.llE+OO u WG W-11 408799005 10/19/2016 Ba-140 -4.39E+OO 7.93E+OO 2.39E+Ol u WG W-11 408799005 10/19/2016 Be-7 -3.07E+OO 1.08E+Ol 3.36E+Ol u WG W-11 408799005 10/19/2016 Ce-141 -5.72E+OO 3.03E+OO 7.23E+OO u WG W-11 408799005 10/19/2016 Ce-144 8.18E+OO 7.98E+OO 2.74E+Ol u WG W-11 408799005 10/19/2016 Co-57 -2.llE-02 9.77E-01 3.33E+OO u WG W-11 408799005 10/19/2016 Co-58 -2.62E+OO 1.58E+OO 3.99E+OO u WG W-11 408799005 10/19/2016 Co-60 -8.67E-02 l.19E+OO 3.80E+OO u WG W-11 408799005 10/19/2016 Cr-51 9.31E+OO l.24E+Ol 4.19E+Ol u WG W-11 408799005 10/19/2016 Cs-134 -2.44E-02 l.46E+OO 4.29E+OO u WG W-11 408799005 10/19/2016 Cs-137 -l.71E+OO l.60E+OO 3.99E+OO u WG W-11 408799005 10/19/2016 Fe-59 1.52E+OO 2.69E+OO 8.56E+OO u WG W-11 408799005 10/19/2016 H-3 5.13E+Ol 5.63E+02 l.84E+03 u WG W-11 408799005 10/19/2016 I-131 1.02E+OO 2.36E+OO 7.89E+OO u D-142 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report-2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-11 408799005 10/19/2016 K-40 -2.29E+Ol 2.12E+Ol 7.05E+Ol u *WG W-11 408799005 10/19/2016 La-140 1.92E+OO 2.63E+OO 9.25E+OO u WG W-11 408799005 10/19/2016 Mn-54 -3.03E-01 1.33E+OO . 4.34E+OO u WG W-11 408799005 10/19/2016 Nb-95 -4.74E-01 l.57E+OO 5.14E+OO u WG W-11 408799005 10/19/2016 Ru-103 -1.80E+OO l.75E+OO 4.25E+OO u WG W-11 408799005 10/19/2016 Ru-106 -2.64E-02 l.25E+Ol 3.94E+Ol u WG W-11 408799005 10/19/2016 Sb-124 -3.21E+OO 3.48E+OO 9.71E+OO u WG W-11 408799005 10/19/2016 Sb-125 1.81E-01 3.25E+OO 1.06E+Ol u WG W-11 408799005 10/19/2016 Se-75 -1.32E+OO 1.57E+OO 4.82E+OO u WG W-11 408799005 10/19/2016 Th-228 2.09E+OO 3.0lE+OO 9.84E+OO u WG W-11 408799005 10119/2016 Zn-65 -l.52E-01 3.0lE+OO 9.84E+OO u WG W-11 408799005 . 10119/2016 Zr-95 8.12E-01 2.75Et00 9.48E+OO u WG W-12 408799006 10/19/2016 Ac-228 -7.03E+OO 5.86E+OO 1.61E+Ol u WG W-12 408799006 10/19/2016 Ag-108m 2.28E+OO l.18E+OO 4.04E+OO u WG W-12 408799006 10119/2016 Ag-llOm 8.51E-01 1.97E+OO 5.91E+OO u WG W-12 408799006 10/19/2016 Ba-140 -1.09E+Ol 7.02E+OO 1.79E+OI u WG W-12 408799006 10/19/2016 Be-7 9.15E+OO 1.06E+Ol 3.69E+Ol u WG W-12 408799006 10/19/2016 Ce-141 -1.47E+OO 2.56E+OO 7.57E+OO u WG W-12 408799006 10/19/2016 Ce-144 1.61E+Ol 9.90E+OO 2.52E+Ol u WG W-12 408799006 10/19/2016 Co-57 1.58E+OO 1.05E+OO 3.47E+OO u WG W-12 408799006 10/19/2016 Co-58 *-7.45E-02 1.20E+OO 3.80E+OO u WG W-12 408799006 10/19/2016 Co-60 5.14E-Ol 1.19E+OO 4.17E+OO u WG W-12 408799006 10119/2016 Cr-51 4.63E+OO l.15E+OI 4.02E+OI u WG W-12 408799006 10/19/2016 Cs-134 -1.32E+OO 1.43E+OO 3.31E+OO u WG W-12 408799006 10/19/2016 Cs-137 -1.21E+OO 1.42E+OO 3.56E+OO u WG W-12 408799006 10/19/2016 Fe-59 -9.82E-Ol 2.68E+OO 8.60E+OO u WG W-12 408799006 10/19/2016 H-3 6.58E+02 5.84E+02 l.81E+03 u WG W-12 408799006 10/19/2016 I-131 3.56E+OO 2.91E+OO 1.02E+Ol u WG W-12 408799006 10/19/2016 K-40 -2.73E+OO 1.67E+OI 5.26E+Ol u WG W-12 408799006 10/19/2016 La-140 4.99E-02 2.25E+OO 7.36E+OO u WG W-12 408799006 10/19/2016 Mn-54 -5.47E-Ol l.15E+OO 3.43E+OO u WG W-12 408799006 10/19/2016 Nb-95 -1.65E-Ol 9.89E-01 3.llE+OO u WG W-12 408799006 10/19/2016 Ru-103 -2.00E-01 1.38E+OO 4.55E+OO u WG W-12 408799006 10/19/2016 Ru-106 2.67E+OO 9.69E+OO 3.26E+Ol u WG W-12 408799006 10/19/2016 Sb-124 -2.83E+OO 3.32E+OO 8.88E+OO u WG W-12 408799006 10/19/2016 Sb-125 -5.05E-Ol 2.93E+OO 9.71E+OO u WG W-12 408799006 10119/2016 Se-75 -l.16E+OO 1.89E+OO 5.63E+OO u WG W-12 408799006 10/19/2016 Th-228 2.86E+OO 3.14E+OO 7.33E+OO u WG W-12 408799006 10119/2016 Zn-65 4.32E+OO 2.84E+OO 9.77E+OO u WG W-12 408799006 10/19/2016 Zr-95 3.27E+OO 2.33E+OO 8.21E+OO u WG W-13 408799007 10/19/2016 Ac-228 -6.54E+OO 6.30E+OO l.91E+Ol u WG W-13 408799007 10/19/2016 Ag-108m l.72E+OO l.24E+OO 4.22E+OO u WG W-13 408799007 10/19/2016 Ag-llOm -2.76E-Ol l.47E+OO 4.87E+OO u WG W-13 408799007 10/19/2016 Ba-140 2.71E+OO 5.67E+OO I.92E+OI u WG* W-13 408799007 10/19/2016 Be-7 -2.17E+Ol l.24E+Ol 3.21E+OI u WG W-13 408799007 10/19/2016 Ce-141 6.25E-01 2.12E+OO 6.83E+OO u WG W-13 408799007 10/19/2016 Ce-144 3.72E-Ol 7.41E+OO 2.37E+Ol u WG W-13 408799007 10/19/2016 Co-57 6.31E-Ol 1.lOE+OO 3.57E+OO u WG W-13 408799007 10/19/2016 Co-58 -l.56E-02 l.IOE+OO 3.47E+OO u WG W-13 408799007 10/19/2016 Co-60 -6.59E-01 1.17E+OO 3.50E+OO u D-143 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 I SAMPLE END CONC STD.DEV. MDC FLAGS I I TYPE STATION LSN DATE NUCLIDE (pCVL) (pCi/L) (pCVL) I WG. W-13 408799007 10/19/2016 Cr-51 -l.47E+OO 1.13E+Ol 3.79E+Ol u WG W-13 408799007 10/19/2016 Cs-134 2.llE+OO l.46E+OO 5.02E+OO u I WG W-13 408799007 10/19/2016 Cs-137 -l.58E+OO 1.35E+OO 3.70E+OO u WG W-13 408799007 10/19/2016 Fe-59 3.73E+OO 2.32E+OO 8.49E+OO u I WG W-13 408799007 10/19/2016 H-3 l.05E+Ol 5.50E+02 l.81E+03 u WG W-13 408799007 10/19/2016 I-131 -l.44E+OO 2.00E+OO 6.27E+OO u WG W-13 408799007 10/19/2016 K-40 -3.36E+Ol l.74E+Ol 5.14E+Ol u WG W-13 408799007 10/19/2016 La-140 l.47E+OO l.96E+OO 6.95E+OO u WG W-13 408799007 10/19/2016 Mn-54 8.91E-01 1.06E+OO 3.82E+OO U WG W-13 408799007 10/19/2016 Nb-95 -1.0lE+OO l.46E+OO 4.30E+OO U WG W-13 408799007 10/19/2016 Ru-103 -3.68E-01 1.21E+OO 3.86E+OO U WG W-13 408799007 10/19/2016 Ru-106 -5.26E+QO l.20E+Ol 3.72E+Ol U WG W-13 408799007 10/19/2016 Sb-124 4.02E+OO 2.45E+OO 9.58E+OO U WG W-13 408799007 10/19/2016 Sb-125 -2.lSE+OO 3.0lE+OO 9.28E+OO U WG W-13 408799007 10/19/2016 Se-75 2.46E+OO 1.68E+OO 5.76E+OO U WG W-13 408799007 10/19/2016 Th-228 6.90E+OO 3.57E+OO 6.98E+OO U WG W-13 408799007 10/19/2016 Zn-65 2.75E+OO 2.54E+OO 8.45E+OO U WG W-13 408799007 10/19/2016 Zr-95 2.13E+OO 1.87E+OO 6.57E+OO U WG W-14 408799008 10/19/2016 Ac-228 -6.llE+OO 5.75E+OO l.69E+Ol U WG W-14 408799008 10/19/2016 Ag-108m -7.13E-Ol 9.40E-01 2.93E+OO u WG W-14 408799008 10/19/2016 Ag-1 lOm -3.31E+OO 1.68E+OO 3.57E+OO u WG W-14 408799008 10/19/2016 Ba-140 3.07E-01 4.94E+OO 1.64E+Ol u WG W-14 408799008 10/19/2016 Be-7 -5.20E+OO 7.97E+OO 2.47E+Ol u WG W-14 408799008 10/19/2016 Ce-141 -6.43E+OO 2.67E+OO 5.59E+OO u WG W-14 408799008 10/19/2016 Ce-144 1.47E+OO 7.20E+OO 2.32E+Ol u WG W-14 408799008 10/19/2016 Co-57 -l.58E+OO 1.00E+OO 2.77E+OO u WG W-14 408799008 10/19/2016 Co-58 8.17E-01 9.87E-01 3.llE+OO u WG W-14 408799008 10/19/2016 Co-60 -l.20E+OO 1.0SE+OO 2.97E+OO u WG W-14 408799008 10/19/2016 Cr-51 -1.llE+Ol l.05E+Ol 2.85E+Ol u WG W-14 408799008 10/19/2016 Cs-134 1.34E+OO l.22E+OO 4.18E+OO u WG W-14 408799008 10/19/2016 Cs-137 -l.54E+OO l.41E+OO 4.15E+OO u WG W-14 408799008 10/19/2016 Fe-59 3.17E+OO 2.27E+OO 7.62E+OO u WG W-14 408799008 10/19/2016 H-3 2.80E+02 5.59E+02 l.79E+03 u WG W-14 408799008 10/19/2016 1-131 -3.13E+OO 1.95E+OO 5.43E+OO u WG W-14 408799008 10/19/2016 K-40 9.35E+OO 1.61E+Ol 5.83E+Ol u WG W-14 408799008 10/19/2016 La-140 l.lOE+OO 2.09E+OO 7.19E+OO u WG W-14 408799008 10/19/2016 Mn-54 -1.35E-Ol 9.48E-01 2.98E+OO u WG W-14 408799008 10/19/2016 Nb-95 -5.98E-01 l.16E+OO 3.54E+OO u WG W-14 408799008 10/19/2016 Ru-103 -8.30E-01 l.07E+OO 3.27E+OO u WG W-14 408799008 10/19/2016 Ru-106 5.53E+OO 1.lOE+Ol 2.76E+Ol u WG W-14 408799008 10/19/2016 Sb-124 l.28E+OO 1.98E+OO 7.08E+OO u WG W-14 408799008 10/19/2016 Sb-125 l.66E+OO 2.70E+OO 9.27E+OO u WG W-14 408799008 10/19/2016 Se-75 2.00E+OO 1.47E+OO 5.06E+OO u WG W-14 408799008 10/19/2016 Th-228 7.46E+OO 3.66E+OO 6.0SE+OO UI WG W-14 408799008 10/19/2016 Zn-65 -2.50E+OO 2.73E+OO 6.97E+OO u WG W-14 408799008 10/19/2016 Zr-95 l.llE+OO l.71E+OO 5.81E+OO u WG W-15 408799009 10/19/2016 Ac-228 7.86E+OO 1.0lE+Ol 2.73E+Ol u WG W-15 408799009 10/19/2016 Ag-108m l.16E+OO 1.32E+OO 4.75E+OO u WG W-15 408799009 10/19/2016 Ag-llOm 4.84E+OO 2.68E+OO 9.68E+OO u WG W-15 408799009 10/19/2016 Ba-140 -l.99E+Ol 9.84E+OO 2.21E+Ol u 0-144 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-15 408799009 10/19/2016 Be-7 -1.36E+Ol 1.59E+Ol 4.90E+Ol u WG W-15 408799009 10/19/2016 Ce-141 -3.55E+OO 2.94E+OO 8.08E+OO u WG W-15 408799009 10/19/2016 Ce-144 -4.59E+OO 9.87E+OO 3.19E+Ol u WG W-15 408799009 10/19/2016 Co-57 -9.66E-01 1.20E+OO 3.79E+OO u WG W-15 408799009 10/19/2016 Co-58 4.41E-01 1.46E+OO 4.94E+OO u WG W-15 408799009 10/19/2016 Co-60 -5.36E-Ol 2.00E+OO 6.44E+OO u WG W-15 408799009 10/19/2016 Cr-51 -6.0lE+OO 1.75E+Ol 5.34E+Ol U. WG W-15 408799009 10/19/2016 Cs-134 4.17E+OO 2.03E+OO 7.39E+OO u WG W-15 408799009 10/19/2016 Cs-137 -4.09E-01 l.18E+OO 3.46E+OO u WG W-15 408799009 10119/2016 Fe-59 2.73E+OO 3.58E+OO 1.31E+Ol u WG W-15 408799009 10/19/2016 H-3 -2.55E+02 5.30E+02 l.78E+03 u WG W-15 408799009 10/19/2016 I-131 2.99E+OO 3.05E+OO 1.02E+Ol u WG W-15 408799009 10/19/2016 K-40 7.83E+OO 2.52E+Ol 9.33E+OI u WG W-15 408799009 10/19/2016 La-140 4.37E+OO 3.27E+OO l.26E+OI u WG W-15 408799009 10/19/2016 Mn-54 -1.47E+OO 1.71E+OO 3.93E+OO u WG W-15 408799009 10/19/i016 Nb-95 -2.03E+OO 1.79E+OO 4.77E+OO u WG W-15 408799009 10/19/2016 Ru-103 2.66E-Ol 1.65E+OO 5.63E+OO u WG W-15 408799009 10/19/2016 Ru-106 l.57E+Ol 1.34E+Ol 4.88E+Ol u WG W-15 408799009 10/19/2016 Sb-124 l.08E+OO 2.73E+OO 9.96E+OO u WG W-15 408799009 10/19/2016 Sb-125 -l.47E+OO 3.53E+OO 1.15E+Ol u WG W-15 408799009 10/19/2016 Se-75 -2.27E+OO 1.93E+OO 5.30E+OO u WG W-15 408799009 10/19/2016 Th-228 4.39E-Ol 4.59E+OO l.21E+Ol u WG W-15 408799009 10/19/2016 Zn-65 -3.52E+OO 3.75E+OO 1.09E+Ol u WG W-15 408799009 10/19/2016 Zr-95 7.59E-OI 2.50E+OO 8.53E+OO u WG MW-20 408799010 10/20/2016 Ac-228 -2.81E+OO 6.64E+OO 1.97E+OI u WG MW-20 408799010 10/20/2016 Ag-108m 1.31E+OO 1.32E+OO 4.43E+OO u WG MW-20 408799010 10/20/2016 Ag-llOm -l.57E+OO l.62E+OO 4.46E+OO u WG MW-20 408799010 10/20/2016 Ba-140 1.44E+Ol 8.02E+OO 2.79E+OI u WG MW-20 408799010 10/20/2016 Be-7 -2.13E+OO l.23E+Ol 3.84E+Ol u WG MW-20 408799010 10/20/2016 Ce-141 3.53E-03 2.12E+OO 7.25E+OO u WG MW-20 408799010 10/20/2016 Ce-144 -l.19E+Ol 8.69E+OO 2.66E+Ol u WG MW-20 408799010 10/20/2016 Co-57 l.90E+OO 1.40E+OO 4.45E+OO u WG MW-20 408799010 10/20/2016 Co-58 -1.20E+OO 1.38E+OO 4.02E+OO u WG MW-20 408799010 10/20/2016 Co-60 -9.12E-Ol 1.50E+OO 4.58E+OO u WG MW-20 408799010 10/20/2016 Cr-51 7.42E+OO l.19E+Ol 4.03E+Ol u WG MW-20 408799010 10/20/2016 Cs-134 1.39E+OO 1.33E+OO 4.74E+OO u WG MW-20 .408799010 10/20/2016 Cs-137 4.76E-Ol 1.32E+OO 4.55E+OO u WG MW-20 408799010 10/20/2016 Fe-59 4.09E+OO 3.37E+OO 1.09E+Ol u WG MW-20 408799010 10/20/2016 H-3 3.38E+02 5.58E+02 1.78E+03 u WG MW-20 408799010 10/20/2016 I-131 -7.52E-02 2.48E+OO 8.05E+OO u WG MW-20 408799010 10/20/2016 K-40 -l.65E+OO 1.85E+Ol 6.08E+Ol u WG MW-20 408799010 10/20/2016 La-140 -2.67E+OO 2.37E+OO 6.llE+OO u WG MW-20 408799010 10/20/2016 Mn-54 -1.38E+OO l.33E+OO 3.73E+OO u WG MW-20 408799010 10/20/2016 Nb-95 -l.05E+OO l.64E+OO 5.08E+OO u WG MW-20 408799010 10/20/2016 Ru-103 -7.26E-Ol 1.36E+OO 4.04E+OO u WG MW-20 408799010 10/20/2016 Ru-106 2.08E+Ol 1.39E+Ol 4.88E+Ol u WG MW-20 408799010 10/20/2016 Sb-124 3.72E+OO 4.19E+OO 1.49E+Ol u WG MW-20 408799010 10/20/2016 Sb-125 1.29E-01 3.68E+OO 1.19E+OI u WG MW-20 408799010 10/20/2016 Se-75 -8.16E-01 1.81E+OO 5.83E+OO u WG MW-20 408799010 10/20/2016 Th-228 4.30E+OO 5.23E+OO 9.98E+OO u D-145 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. 11DC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG MW-20 408799010 10/20/2016 Zn-65 l.OOE+OO 3.03E+OO 8.96E+OO u WG MW-20 408799010 10/20/2016 Zr-95 3.20E+OO 2.58E+OO 9.15E+OO u WG MW-21 408799011 10/20/2016 Ac-228 -6.96E+OO 5.02E+OO l.34E+Ol u WG MW-21 408799011 10/20/2016 Ag-108m l.38E-01 9.68E-01 3.24E+OO u WG MW-21 408799011 10/20/2016 Ag-llOm -l.05E+OO l.38E+OO 3.52E+OO u WG MW-21 408799011 10/20/2016 Ba-140 -4.24E+OO 5.55E+OO l.67E+Ol u WG MW-21 408799011 10/20/2016 Be-7 3.79E+OO 1.14E+Ol 2.81E+Ol u WG MW-21 408799011 10/20/2016 Ce-141 -l.75E+OO 2.61E+OO 7.22E+OO u WG MW-21 408799011 10/20/2016 Ce-144 -5.17E-01 8.14E+OO 2.61E+Ol u WG MW-21 408799011 10/20/2016 Co-57 7.69E-01 l.09E+OO 3.57E+OO u WG MW-21 408799011 10/20/2016 Co-58 -5.92E-01 1.12E+OO 3.59E+OO u WG MW-21 408799011 10/20/2016 Co-60 9.04E-01 l.21E+OO 4.25E+OO u WG MW-21 408799011 10/20/2016 Cr-51 -3.52E+OO l.03E+Ol 3.40E+Ol u WG MW-21 408799011 10/20/2016 Cs-134 2.98E-01 l.19E+OO 3.86E+OO u WG MW-21 408799011 10/20/2016 Cs-137 -3.94E-01 1.16E+OO 3.60E+OO u WG MW-21 408799011 10/20/2016 Fe-59 2.13E+OO l.87E+OO 6.86E+OO u WG MW-21 408799011 10/20/2016 H-3 l.64E+02 5.06E+02 l.64E+03 u WG MW-21 408799011 10/20/2016 1-131 -l.54E+OO l.94E+OO 6.09E+OO u WG MW-21 408799011 10/20/2016 K-40 -5.57E+OO l.47E+Ol 4.64E+Ol u WG MW-21 408799011 10/20/2016 La-140 4.77E-Ol 2.06E+OO 6.83E+OO u WG MW-21 408799011 10/20/2016 Mn-54 -2.17E-02 7.94E-01 2.69E+OO u WG MW-21 408799011 10/20/2016 Nb-95 -2.0lE+OO l.56E+OO 4.18E+OO u WG MW-21 408799011 10/20/2016 Ru-103 7.BE-01 1.15E+OO 3.58E+OO u WG MW-21 408799011 10/20/2016 Ru-106 -l.15E+Ol l.13E+Ol 3.22E+Ol u WG MW-21 408799011 10/20/2016 Sb-124 -1.55E+OO 3.21E+OO 9.51E+OO u WG MW-21 408799011 10/20/2016 Sb-125 -l.16E+OO 3.37E+OO l.09E+Ol u WG MW-21 408799011 10/20/2016 Se-75 -1.99E-01 l.51E+OO 5.13E+OO u WG MW-21 408799011 10/20/2016 Th-228 2.61E-Ol 2.55E+OO 8.52E+OO u WG MW-21 408799011 10/20/2016 Zn-65 2.37E+OO 3.07E+OO 9.65E+OO u WG MW-21 408799011 10/20/2016 Zr-95 -4.80E+OO 2.44E+OO 5.21E+OO u WG W-2 408921001 10/21/2016 Ac-228 9.85E+OO 7.08E+OO 2.40E+Ol u WG W-2 408921001 10/21/2016 Ag-108m -3.49E-01 l.20E+OO 3.74E+OO u WG W-2 408921001 10/21/2016 Ag-llOm 2.46E+OO 2.02E+OO 7.12E+OO u WG W-2 408921001 10/21/2016 Ba-140 3.66E+OO 8.04E+OO 2.80E+Ol u WG W-2 408921001 10/21/2016 Be-7 -2.40E+Ol l.35E+Ol 3.19E+Ol u WG W-2 408921001 10/21/2016 Ce-141 -2.llE+OO 2.93E+OO 8.61E+OO u WG W-2 408921001 10/2112016 Ce-144 -4.27E+OO 8.89E+OO 2.98E+Ol u WG W-2 408921001 10/21/2016 Co-57 -9.06E-02 l.26E+OO 3.93E+OO u WG W-2 408921001 10/21/2016 Co-58 -6.47E-01 l.39E+OO 4.31E+OO u WG W-2 408921001 10/21/2016 Co-60 l.20E+OO l.24E+OO 4.58E+OO u WG W-2 408921001 10/21/2016 Cr-51 -2.llE+Ol l.44E+Ol 3.99E+Ol u WG W-2 408921001 10/21/2016 Cs-134 -l.18E+OO l.49E+OO 4.41E+OO u WG W-2 408921001 10/21/2016 Cs-137 -3.lOE+OO l.64E+OO 3.97E+OO u WG W-2 408921001 10/21/2016 Fe-59 -l.62E+OO 2.46E+OO 6.99E+OO u WG W-2 408921001 10/21/2016 H-3 -1.23E+02 4.26E+02 l.42E+03 u WG W-2 408921001 10/21/2016 1-131 -l.86E+OO 2.81E+OO 8.57E+OO u WG W-2 408921001 10/21/2016 K-40 2.03E+Ol 2.51E+Ol 6.65E+Ol u WG W-2 408921001 10/21/2016 La-140 3.85E+OO 2.82E+OO l.04E+Ol u WG W-2 408921001 10/21/2016 Mn-54 2.29E-02 l.33E+OO 4.36E+OO u WG W-2 408921001 10/21/2016 Nb-95 l.20E+OO l.51E+OO 5.26E+OO u D-146 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-2 408921001 10/21/2016 Ru-103 -2.59E+OO 1.75E+OO 4.51E+OO u WG W-2 408921001 10/21/2016 Ru-106 -l.23E-01 I.44E+Ol 4.85E+Ol u WG W-2 408921001 10/21/2016 Sb-124 5.96E+OO 3.56E+OO 1.36E+Ol u WG W-2 408921001 10/21/2016 Sb-125 -l.26E+OO 3.87E+OO 1.21E+Ol u WG W-2 408921001 10/21/2016 Se-75 2.44E-01 l.75E+OO 5.86E+OO u WG W-2 408921001 10/21/2016 Th-228 l.71E+OO 3.22E+OO l.OlE+Ol u WG W-2 408921001 10/21/2016 Zn-65 -l.64E+OO 3.50E+OO 1.06E+Ol u WG W-2 408921001 10/21/2016 Zr-95 2.52E+OO I.99E+OO 7.29E+OO u WG W-3 408921002 10/21/2016 Ac-228 1.35E+OO 5.32E+OO l.89E+Ol u WG W-3 408921002 10/21/2016 Ag-108m 7.73E-Ol 1.02E+OO 3.55E+OO u WG W-3 408921002 10/21/2016 Ag-110111

-2.21E+OO 1.68E+OO 4.31E+OO u WG W-3 408921002 10/21/2016 Ba-140 -6.26E-01 7.07E+OO 2.33E+Ol u WG W-3 408921002 10/21/2016 Be-7 6.07E+OO 1.02E+Ol 3.52E+Ol u WG W-3 408921002 10/21/2016 Ce-141 3.67E+OO 4.03E+OO 7.07E+OO u WG W-3 408921002 10/21/2016 Ce-144 -4.16E+OO 7.72E+OO 2.40E+Ol u WG W-3 408921002 10/21/2016 Co-57 -9.70E-01 l.09E+OO 3.29E+OO u WG W-3 408921002 10/21/2016 Co-58 -9.19E-01 I.03E+OO 2.89E+OO u WG W-3 408921002 10/21/2016 Co-60 2.85E+OO 1.37E+OO 4.81E+OO u WG W-3 408921002 10/21/2016 Cr-51 1.49E+Ol l.21E+Ol 4.20E+Ol u WG W-3 408921002 10/21/2016 Cs-134 -3.90E-01 1.34E+OO 4.18E+OO u WG W-3 408921002 10/21/2016 Cs-137 -2.52E+OO 1.27E+OO 2.79E+OO u WG W-3 408921002 10/21/2016 Fe-59 -2.93E+OO 2.68E+OO 7.88E+OO u WG W-3 408921002 10/21/2016 H-3 -4.31E+02 4.25E+02 1.46E+03 u WG W-3 408921002 10/21/2016 I-131 2.92E+OO 2.64E+OO 9.18E+OO u WG W-3 408921002 10/21/2016 K-40 -l.72E+Ol 1.43E+Ol 4.89E+Ol u WG W-3 408921002 10/21/2016 La-140 9.14E-01 2.41E+OO 7.42E+OO u WG W-3 408921002 10/21/2016 Mn-54 l.09E-01 l.07E+OO 3.47E+OO u WG W-3 408921002 10/21/2016 Nb-95 -2.06E+OO l.69E+OO 3.81E+OO u WG W-3 408921002 10/21/2016 Ru-103 5.99E-01 9.20E-01 3.22E+OO u WG W-3 408921002 10/21/2016 Ru-106 -1.39E+Ol l.04E+Ol 2.81E+Ol u WG W-3 408921002 10/21/2016 Sb-124 1.38E+OO 1.59E+OO 6.17E+OO u WG W-3 408921002 10/21/2016 Sb-125 l.40E+OO 2.99E+OO 1.03E+Ol u WG W-3 408921002 10/21/2016 Se-75 -2.55E+OO 1.68E+OO 4.34E+OO u WG W-3 408921002 10/21/2016 Th-228 6.76E+OO 3.13E+OO 6.46E+OO UI WG W-3 408921002 10/21/2016 Zn-65 2.14E-03 2.51E+OO 7.51E+OO u WG W-3 408921002 10/21/2016 Zr-95 3.91E-01 2.05E+OO 6.77E+OO u WG W-9 408921003 10/21/2016 Ac-228 -1.0lE+Ol 9.70E+OO 2.65E+Ol u WG W-9 408921003 10/21/2016 Ag-108m l .33E-01 1.23E+OO 4.25E+OO u WG W-9 408921003 10/2112016 Ag-llOm l.27E+OO 1.99E+OO 6.97E+OO u WG W-9 408921003 10/21/2016 Ba-140 6.06E+OO 9.33E+OO 3.28E+Ol u WG W-9 408921003 10/21/2016 Be-7 -6.73E+OO l.40E+Ol 4.50E+Ol u WG W-9 408921003 10/21/2016 Ce-141 -5.23E+OO 2.91E+OO 7.86E+OO u WG W-9 408921003 10/21/2016 Ce-144 -3.52E+OO 8.55E+OO 2.77E+Ol u WG W-9 408921003 10/21/2016 Co-57 -6.82E-01 1.32E+OO 4.27E+OO u WG W-9 408921003 10/21/2016 Co-58 1.IOE-01 l.51E+OO 4.44E+OO u WG W-9 408921003 10/21/2016 Co-60 -l.70E+OO I.86E+OO 5.18E+OO u WG W-9 408921003 10/21/2016 Cr-51 -6.43E+OO 1.71E+Ol 5.21E+Ol U WG W-9 408921003 10/21/2016 Cs-134 9.02E-01 1.75E+OO 6.05E+OO U WG W-9 408921003 10/21/2016 Cs-137 -3.87E-01 l.84E+OO 5.94E+OO U WG W-9 408921003 10/21/2016 Fe-59 -l.75E+OO 4.09E+OO 1.32E+Ol U D-147 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG W-9 408921003 10/21/2016 H-3 -7.26E+Ol 4.44E+02 1.47E+03 u WG W-9 408921003 10/21/2016 I-131 2.91E-01 3.22E+OO 1.0lE+Ol u WG W-9 408921003 10/21/2016 .K.-40 -1.56E+Ol 2.88E+Ol 9.80E+Ol u WG W-9 408921003 10/21/2016 La-140 2.32E+OO 2.39E+OO 9.38E+OO u WG W-9 408921003 10/21/2016 Mn-54 -4.31E-01 1.54E+OO 4.77E+OO u WG W-9 408921003 10/21/2016 Nb-95 -4.23E-02 1.78E+OO 5.79E+OO u WG W-9 408921003 10/21/2016 Ru-103 -1.62E-01 l.14E+OO 3.77E+OO u WG W-9 408921003 10/21/2016 Ru-106 -1.63E+Ol 1.60E+Ol 4.59E+Ol u WG W-9 408921003 10/21/2016 Sb-124 -1.SIE+OO 4.49E+OO l.35E+Ol u WG W-9 408921003 10/21/2016 Sb-125 1.63E+OO 4.lOE+OO 1.44E+Ol u WG W-9 408921003 10/21/2016 Se-75 -1.63E+OO 2.21E+OO 6.57E+OO u WG W-9 408921003 10/2112016 Th-228 1.78E+OO 4.87E+OO 8.54E+OO u WG W-9 408921003 10/21/2016 Zn-65 -4.23E+OO 2.93E+OO 6.69E+OO u WG W-9 408921003 10/2112016 Zr-95 2.51E+OO 3.03E+OO 1.07E+Ol u WG SG-1 408921004 10/21/2016 Ac-228 1.30E+OO 6.64E+OO 2.35E+Ol u WG SG-1 408921004 10/21/2016 Ag-108m 6.59E-02 l.17E+OO 3.80E+OO u WG SG-1 408921004 10/21/2016 Ag-llOm -8.83E-01 1.46E+OO 4.42E+OO u WG SG-1 408921004 10/21/2016 Ba-140 1.06E+Ol 7.84E+OO 2.68E+Ol u WG SG-1 408921004 10/21/2016 Be-7 1.85E+Ol l.30E+Ol 4.41E+Ol u WG SG-1 408921004 10/21/2016 Ce-141 -6.25E+OO 3.15E+OO 6.90E+OO u WG SG-1 408921004 10/21/2016 Ce-144 -5.19E+OO 7.18E+OO 2.33E+Ol u WG SG-1 408921004 10/21/2016 Co-57 l.13E+OO 1.05E+OO 3.61E+OO u WG SG-1 408921004 10/21/2016 Co-58 l.15E+OO 1.61E+OO 5.64E+OO u WG SG-1 408921004 10/21/2016 Co-60 7.92E-01 8.47E-01 3.29E+OO u WG SG-1 408921004 10/21/2016 Cr-51 -1.62E+Ol 1.25E+Ol 3.54E+Ol u WG SG-1 408921004 10/21/2016 Cs-134 5.47E-01 1.38E+OO 4.81E+OO u WG SG-1 408921004 10/21/2016 Cs-137 -3.30E-01 1.38E+OO 4.57E+OO u WG SG-1 408921004 10/21/2016 Fe-59 -2.14E+OO 3.58E+OO 1.09E+Ol u WG SG-1 408921004 10/21/2016 H-3 -6.26E+02 4.19E+02 l.47E+03 u WG SG-1 408921004 10/21/2016 I-131 3.93E+OO 2.79E+OO 9.46E+OO u WG SG-1 408921004 10/21/2016 .K-40 8.05E+OO 1.75E+Ol 6.48E+Ol u -WG SG-1 408921004 10/21/2016 La-140 4.44E-Ol 2.52E+OO 8.33E+OO u WG SG-1 408921004 10/21/2016 Mn-54 6.32E-01 1.38E+OO 4.80E+OO u WG SG-1 408921004 10121/2016 Nb-95 -3.69E-01 l.72E+OO 5.70E+OO u WG SG-1 408921004 10121/2016 Ru-103 -7.92E-Ol 1.42E+OO 4.29E+OO u WG SG-1 408921004 10121/2016 Ru-106 -l.27E+Ol l.57E+Ol 4.52E+Ol u WG SG-1 408921004 10/21/2016 Sb-124 4.94E+OO 3.37E+OO 1.31E+Ol u WG SG-1 408921004 10/21/2016 Sb-125 -2.24E+OO 3.38E+OO l.02E+Ol u WG SG-1 408921004 10/21/2016 Se-75 -l.17E+OO l.67E+OO 5.24E+OO u WG SG-1 408921004 10/21/2016 Th-228 3.89E+OO 2.99E+OO 9.99E+OO u WG SG-1 408921004 10/21/2016 Zn-65 2.87E+OO 2.77E+OO 9.99E+OO u WG SG-1 408921004 10/21/2016 Zr-95 -2.47E+OO 2.62E+OO 7.80E+OO u WG SG-2 408921005 10/21/2016 Ac-228 3.90E+OO 6.86E+OO 2.29E+Ol u WG SG-2 408921005 10/21/2016 Ag-108m -1.39E+OO l.44E+OO 4.27E+OO u WG SG-2 408921005 10/21/2016 Ag-llOm l.76E-01 l.99E+OO 6.51E+OO u WG SG-2 408921005 10/21/2016 Ba-140 -5. l IE-01 9.35E+OO 3.15E+Ol u WG SG-2 408921005 10/21/2016 Be-7 -1.lOE+OO 1.35E+Ol 4.31E+Ol u WG SG-2 408921005 10/21/2016 Ce-141 -1.05E+OO 2.56E+OO 8.07E+OO u WG SG-2 408921005 10/21/2016 Ce-144 -4.95E+OO l.15E+Ol 3.65E+Ol u WG SG-2 408921005 10/21/2016 Co-57 -l.58t'.+00 l.46E+OO 4.41E+OO u D-148 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE .NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-2 408921005 10/21/2016 Co-58 -l.38E+OO l.61E+OO 4.77E+OO u WG SG-2 408921005 10/21/2016 Co-60 5.27E-01 1.27E+OO 4.40E+OO u WG SG-2 408921005 10/21/2016 Cr-51 -l.30E+Ol 1.55E+Ol 4.81E+Ol u WG SG-2 408921005 10/21/2016 Cs-134 3.51E-Ol l.63E+OO 5.43E+OO u WG SG-2 408921005 10/21/2016 Cs-137 -2.18E+OO l.69E+OO 4.79E+OO u WG SG-2 408921005 10/21/2016 Fe-59 l.06E+OO 3.07E+OO l.05E+Ol u WG SG-2 408921005 10/21/2016 H-3 -7.61E+Ol 4.46E+02 1.48E+03 u WG SG-2 408921005 10/21/2016 I-131 -4.35E+OO 3.31E+OO 9.49E+OO u WG SG-2 408921005 10/21/2016 K-40 2.24E+Ol l.78E+Ol 5.17E+Ol u WG SG-2 408921005 10/21/2016 La-140 -4.07E-01 2.61E+OO 8.27E+OO u WG SG-2 408921005 10/21/2016 Mn-54 -l.79E+OO l.34E+OO 3.54E+OO u WG SG-2 408921005 10/21/2016 Nb-95 9.20E-01 l.39E+OO 4.56E+OO u WG SG-2 408921005 10/21/2016 Ru-103 -7.51E-01 l.92E+OO 5.98E+OO u WG SG-2 408921005 10/21/2016 Ru-106 l.61E+Ol l.23E+Ol 4.34E+Ol u WG SG-2 408921005 10/21/2016 Sb-124 5.97E+OO 4.41E+OO l.60E+Ol u WG SG-2 408921005 10/21/2016 Sb-125 6.39E-01 4.00E+OO l.31E+Ol u WG SG-2 408921005 10/21/2016 Se-75 l.42E+OO l.95E+OO 6.66E+OO u WG SG-2 408921005 10/21/2016 Th-228 6.77E-01 3.38E+OO l.12E+Ol u WG SG-2 408921005 10/21/2016 Zn-65 -l.82E+OO 3.18E+OO 8.19E+OO u WG SG-2 408921005 10/21/2016 Zr-95 2.91E+OO 2.71E+OO 9.44E+OO u WG SG-4 408921006 10/21/2016 Ac-228 3.61E+OO 4.62E+OO l.64E+Ol u WG SG-4 408921006 10/21/2016 Ag-108m 2.09E+OO 1.26E+OO 4.24E+OO u WG SG-4 408921006 10/21/2016 Ag-llOm 9.35E-01 1.59E+OO 5.60E+OO u WG SG-4 408921006 10/21/2016 Ba-140 -4.84E+OO 7.61E+OO 2.16E+Ol u WG SG-4 408921006 10/21/2016 Be-7 -l.24E+Ol l.32E+Ol 3.33E+Ol u WG SG-4 408921006 10/21/2016 Ce-141 -l.87E+OO 2.38E+OO 7.32E+OO u WG SG-4 408921006 10/21/2016 Ce-144 4.14E+OO 8.94E+OO 2.94E+Ol u WG SG-4 408921006 10/21/2016 Co-57 l.63E+OO l.23E+OO 4.16E+OO u WG SG-4 408921006 10/21/2016 Co-58 3.59E-01 l.44E+OO 4.98E+OO u WG SG-4 408921006 10/21/2016 Co-60 3.49E-01 l.42E+OO 4.79E+OO u WG SG-4 408921006 10/21/2016 Cr-51 7.86E+OO l.17E+Ol 3.96E+Ol u WG SG-4 408921006 10/21/2016 Cs-134 -l.07E+OO 1.18E+OO 3.53E+OO u WG SG-4 408921006 10/21/2016 Cs-137 2.llE+OO 1.19E+OO 4.17E+OO u WG SG-4 408921006 10/21/2016 Fe-59 1.58E+OO 2.55E+OO 8.96E+OO u WG SG-4 408921006 10/21/2016 H-3 -1.50E+02 4.44E+02 l.48E+03 u WG SG-4 408921006 10/21/2016 I-131 8.72E+OO 3.25E+OO 1.0lE+Ol u WG SG-4 408921006 10/21/2016 K-40 l.85E+Ol l.39E+Ol 5.02E+Ol u WG SG-4 408921006 10/21/2016 La-140 l.92E+OO 3.08E+OO 9.60E+OO u WG SG-4 408921006 10/21/2016 Mn-54 7.39E-01 l.llE+OO 3.93E+OO u WG SG-4 408921006 10/:21/2016 Nb-95 -8.99E-01 1.42E+OO 4.55E+OO u WG SG-4 408921006 10/21/2016 Ru-103 -3.66E+OO l.76E+OO 4.07E+OO u WG SG-4 408921006 10/21/2016 Ru-106 -l.43E+Ol l.21E+Ol 3.30E+Ol u WG SG-4 408921006 10/21/2016 Sb-124 -l.61E-01 2.52E+OO 8.llE+OO u WG SG-4 408921006 10/21/2016 Sb-125 5.77E+OO 3.53E+OO l.20E+Ol u WG SG-4 408921006 10/21/2016 Se-75 -l.13E+OO l.74E+OO 4.86E+OO u WG SG-4 408921006 10/21/2016 Th-228 2.79E+OO 4.12E+OO 9.33E+OO u WG SG-4 408921006 10/21/2016 Zn-65 2.16E+OO l.94E+OO 6.76E+OO u WG SG-4 408921006 10/21/2016 Zr-95 -5.48E+OO 2.94E+OO 6.60E+OO u WG SG-5 408921007 10/21/2016 Ac-228 5.60E+OO 4.68E+OO l.76E+Ol u WG SG-5 408921007 10/21/2016 Ag-108m -l.06E+OO l.03E+OO 3.06E+OO u D-149 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) WG SG-5 408921007 10/21/2016 Ag-llOm -l.35E+OO l.51E+OO 4.36E+OO u WG SG-5 408921007 10/21/2016 Ba-140 -2.17E-01 6.81E+OO 2.22E+Ol u WG SG-5 408921007 10/21/2016 Be-7 -2.95E+OO 1.00E+Ol 3.22E+Ol u WG SG-5 408921007 10/21/2016 Ce-141 1.06E+OO 2.41E+OO 7.35E+OO u WG SG-5 408921007 10/21/2016 Ce-144 -2.00E+OO 7.70E+OO 2.44E+Ol u WG SG-5 408921007 10/21/2016 Co-57 -4.57E-01 l.13E+OO 3.56E+OO u WG SG-5 408921007 10/21/2016 Co-58 -1.26E+OO LlOE+OO 3.22E+OO u WG SG-5 408921007 10/21/2016 Co-60 8.15E-01 9.68E-OI 3.49E+OO u WG SG-5 408921007 10/21/2016 Cr-51 2.46E+OO l.17E+Ol 3.99E+Ol u WG SG-5 408921007 10/21/2016 Cs-134 2.16E+OO 1.45E+OO 4.93E+OO u WG SG-5 408921007 10/21/2016 Cs-137 -3.71E-02 1.26E+OO 4.06E+OO u WG SG-5 408921007 10/21/2016 Fe-59 2.19E+OO 2.05E+OO 7.44E+OO u WG SG-5 408921007 10/21/2016 H-3 1.43E+02 4.61E+02 1.50E+03 u WG SG-5 408921007 10/21/2016 I-131 4.35E+OO 2.74E+OO 9.32E+OO u WG SG-5 408921007 10/21/2016 K-40 -1.66E+Ol 1.54E+Ol 4.54E+Ol u WG SG-5 408921007 10/21/2016 La-140 -3.80E-01 2.20E+OO 6.89E+OO u WG SG-5 408921007 10/21/2016 Mn-54 1.63E+OO l.12E+OO 4.04E+OO u WG SG-5 408921007 10/21/2016 Nb-95 -1.15E+OO 1.53E+OO 4.50E+OO u WG SG-5 408921007 10/21/2016 Ru-103 -1.95E+OO l.26E+OO 3.34E+OO u WG SG-5 408921007 10/21/2016 Ru-106 -1.03E+Ol 9.85E+OO 2.76E+Ol u WG SG-5 408921007 10/21/2016 Sb-124 2.llE+OO 3.06E+OO l.06E+Ol u WG SG-5 408921007 10/21/2016 Sb-125 8.22E+OO 6.89E+OO l.18E+Ol u WG SG-5 408921007 10/21/2016 Se-75 7.87E-01 1.58E+OO 5.47E+OO u WG SG-5 408921007 10/21/2016 Th-228 l.32E+Ol 4.20E+OO 7.71E+OO WG SG-5 408921007 10/21/2016 Zn-65 -1.76E+OO 2.30E+OO 5.65E+OO u WG SG-5 408921007 10/21/2016 Zr-95 -5.51E-02 1.58E+OO 5.02E+OO u WG SG-1 411391001 10/21/2016 ALPHA -5.73E-Ol 1.18E+OO 3.99E+OO u WG SG-1 411391001 10/21/2016 BETA 6.59E+OO 1.08E+OO 2.67E+OO WG SG-2 411391002 10/21/2016 ALPHA -3.18E-01 1.03E+OO 3.46E+OO u WG SG-2 411391002 10/21/2016 BETA 2.90E+OO 8.54E-01 2.50E+OO M WG SG-4 411391003 10/21/2016 ALPHA 1.09E+OO 1.23E+OO 3.86E+OO u WG SG-4 411391003 10/21/2016 BETA 7.34E+OO 1.llE+OO 2.65E+OO WG SG-5 411391004 10/21/2016 ALPHA 1.65E+OO l.18E+OO 3.52E+OO u WG SG-5 411391004 10/21/2016 BETA 4.91E+OO 9.92E-01 2.69E+OO D-150 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-2 390554001 1/3112016 Ac-228 3.68E+OO 4.51E+OO 7.59E+OO u ws SWL-2 390554001 1/31/2016 Ag-108m 5.47E-01 4.85E-Ol 1.55E+OO u ws SWL-2 390554001 1/31/2016 Ag-llOm -4.77E-02 6.66E-01 2.19E+OO u ws SWL-2 390554001 1/31/2016 Ba-140 -l.61E+OO 5.16E+OO l.73E+Ol u WS SWL-2 390554001 1/31/2016 Be-7 6.56E+OO 5.70E+OO 1.82E+Ol u ws SWL-2 390554001 1/31/2016 Ce-141 -1.00E+OO 2.14E+OO 4.48E+OO u WS SWL-2 390554001 1/31/2016 Ce-144 4.71E+OO 3.93E+OO l.29E+Ol u ws SWL-2 390554001 1/31/2016 Co-57 -2.24E-01 5.0IE-01 l.68E+OO u ws SWL-2 390554001 1/31/2016 Co-58 -3.0IE-02 5.86E-01 1.94E+OO u ws SWL-2 390554001 1/3112016 Co-60 6.0IE-01 6.19E-01 l.84E+OO u ws SWL-2 390554001 1/31/2016 Cr-51 -5.00E+OO 7.0SE+OO 2.25E+Ol u ws SWL-2 390554001 1/31/2016 Cs-134 3.83E-01 6.13E-Ol 2.04E+OO u ws SWL-2 390554001 1/31/2016 Cs-137 2.59E-01 5.34E-01 l.79E+OO u ws SWL-2 390554001 1/31/2016 Fe-59 1.74E+OO l.43E+OO 4.63E+OO u ws SWL-2 390554001 1/31/2016 1-131 -3.60E+OO 3.lOE+OO 9.46E+OO u ws SWL-2 390554001 1/31/2016 K-40 -l.03E+Ol 1.llE+Ol 2.50E+Ol u ws SWL-2 390554001 1/31/2016 La-140 7.59E-Ol l.86E+OO 6.26E+OO u ws SWL-2 390554001 1/31/2016 Mn-54 2.84E-01 5.39E-Ol l.79E+OO u ws SWL-2 390554001 1/31/2016 Nb-95 1.04E+OO 6.50E-Ol 2.09E+OO u ws SWL-2 390554001 1/31/2016 Ru-103 -9.55E-01 7.21E-Ol 2.12E+OO u ws SWL-2 390554001 1/31/2016 Ru-106 -l.97E+Ol 7.90E+OO 1.44E+Ol u ws SWL-2 390554001 1/31/2016 Sb-124 2.39E-01 l.50E+OO 4.98E+OO u ws SWL-2 390554001 1/31/2016 Sb-125 -4.45E-01 l.61E+OO 4.48E+OO u ws SWL-2 390554001 1/31/2016 Se-75 -7.43E-01 8.28E-01 2.54E+OO u ws SWL-2 390554001 1/31/2016 Th-228 l.58E+OO l.73E+OO 3.79E+OO u ws SWL-2 390554001 1/31/2016 Zn-65 7.SSE-01 1.llE+OO 3.66E+OO u ws SWL-2 390554001 1/31/2016 Zr-95 4.60E-01 l.07E+OO 3.57E+OO u ws SWL-3 390554002 1/31/2016 Ac-228 -1.05E+Ol 4.51E+OO 8.05E+OO u ws SWL-3 390554002 1/31/2016 Ag-108m -2.06E-02 4.64E-Ol 1.56E+OO u ws SWL-3 390554002 1/31/2016 Ag-llOm -8.63E-01 1.12E+OO 2.45E+OO u ws SWL-3 390554002 1/31/2016 Ba-140 -7.llE+OO 5.79E+OO 1.SOE+Ol u WS SWL-3 390554002 1/31/2016 Be-7 3.53E+OO 5.55E+OO l.86E+Ol u ws SWL-3 390554002 1/31/2016 Ce-141 l.57E+OO 1.42E+OO 4.57E+OO u ws SWL-3 390554002 1/31/2016 Ce-144 1.13E+OO 4.00E+OO 1.27E+Ol u ws SWL-3 390554002 1/31/2016 Co-57 2.88E-01 5.37E-Ol l.70E+OO u ws SWL-3 390554002 1/31/2016 Co-58 -8.74E-01 6.47E-Ol l.91E+OO u ws SWL-3 390554002 1/31/2016 Co-60 5.95E-Ol 5.77E-Ol l.89E+OO u ws SWL-3 390554002 1/31/2016 Cr-51 -6.04E+OO 7.72E+OO 2.44E+Ol u ws SWL-3 390554002 1/31/2016 Cs-134 8.06E-01 6.37E-Ol 2.04E+OO u ws SWL-3 390554002 1/31/2016 Cs-137 2.30E-01 5.98E-Ol l.97E+OO u ws SWL-3 390554002 1/31/2016 Fe-59 -l.76E+OO l.38E+OO 4.18E+OO u ws SWL-3 390554002 1/31/2016 I-131 l.74E+OO 3.27E+OO l.06E+Ol u ws SWL-3 390554002 1/31/2016 K-40 -3.54E+Ol l.40E+Ol 2.71E+Ol u ws SWL-3 390554002 1/31/2016 La-140 -3.12E+OO l.91E+OO 5.49E+OO u ws SWL-3 390554002 1/31/2016 Mn-54 -4.15E-Ol 5.61E-Ol l.75E+OO u ws SWL-3 390554002 1/31/2016 Nb-95 -2.30E+OO l.31E+OO 2.17E+OO u ws SWL-3 390554002 1/31/2016 Ru-103 -3.27E-Ol 8.25E-01 2.36E+OO u ws SWL-3 390554002 1/31/2016 Ru-106 -3.13E+OO 5.26E+OO l.69E+Ol u ws SWL-3 390554002 1/31/2016 Sb-124 -1.43E+OO 1.44E+OO 4.43E+OO u ws SWL-3 390554002 1/31/2016 Sb-125 l.49E+OO l.47E+OO 4.92E+OO u D-151 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-3 390554002 1/31/2016 Se-75 -9.91E-Ol 8.28E-Ol 2.57E+OO u ws SWL-3 390554002 1/31/2016 Th-228 1.43E+OO l.79E+OO 3.76E+OO u ws SWL-3 390554002 1/31/2016 Zn-65 -2.03E+OO l.37E+OO 4.04E+OO u ws SWL-3 390554002 1/31/2016 Zr-95 4.36E-Ol l.13E+OO 3.70E+OO u ws SWL-2 392358001 2/29/2016 Ac-228 7.71E+OO l.03E+Ol l.98E+Ol u ws SWL-2 392358001 2/29/2016 Ag-108m 2.14E+OO l.32E+OO 4.20E+OO u ws SWL-2 392358001 2/29/2016 Ag-llOm 2.07E-Ol l.75E+OO 5.70E+OO u ws SWL-2 392358001 2/29/2016 Ba-140 -l.02E+OO l.18E+Ol 3.96E+Ol u ws SWL-2 392358001 2/29/2016 Be-7 -l.24E+OO l.43E+Ol 4.57E+Ol u ws SWL-2 392358001 2/29/2016 Ce-141 2.27E+OO 3.62E+OO l.03E+Ol u ws SWL-2 392358001 2/29/2016 Ce-144 2.63E+OO 9.64E+OO 3.09E+Ol u ws SWL-2 392358001 2/29/2016 Co-57 -3.64E-Ol l.19E+OO 3.78E+OO u ws SWL-2 392358001 2/29/2016 Co-58 2.37E+OO l.78E+OO 5.26E+OO u ws SWL-2 392358001 2/29/2016 Co-60 1.54E+OO 2.17E+OO 4.40E+OO u ws SWL-2 392358001 2/29/2016 Cr-51 -2.29E+Ol l.99E+Ol 5.56E+Ol u ws SWL-2 392358001 2/29/2016 Cs-134 -3.l lE-01 l.60E+OO 4.43E+OO u ws SWL-2 392358001 2/29/2016 Cs-137 7.45E-02 l.72E+OO 4.94E+OO u ws SWL-2 392358001 2/29/2016 Fe-59 l.38E+OO 3.81E+OO l.lOE+Ol u ws SWL-2 392358001 2/29/2016 1-131 -5.88E+OO 6.38E+OO l.96E+Ol u ws SWL-2 392358001 2/29/2016 K-40 9.57E+OO 2.84E+Ol 6.40E+Ol u ws SwL-2 392358001 2/29/2016 La-140 -3.33E-02 4.48E+OO 1.45E+Ol u ws SWL-2 392358001 2/29/2016 Mn-54 2.52E+OO 1.59E+OO 4.67E+OO u ws SWL-2 392358001 2/29/2016 Nb-95 -3.58E+OO 2.lOE+OO 5.12E-i-OO u ws SWL-2 392358001 2/29/2016 Ru-103 -3.llE+OO l.89E+OO 5.49E+OO u ws SWL-2 392358001 2/29/2016 Ru-106 2.67E+Ol l.53E+Ol 4.49E+Ol u ws SWL-2 392358001 2/29/2016 Sb-124 -7.73E-Ol 3.65E+OO 1.20E+Ol u ws SWL-2 392358001 2/29/2016 Sb-125 2.57E+OO 3.79E+OO 1.24E+Ol u ws SWL-2 392358001 2/29/2016 Se-75 -3.68E-OI l.86E+OO 6.llE+OO u ws SWL-2 392358001 2/29/2016 Th-228 5.86E-Ol 3.47E+OO 9.13E+OO u ws SWL-2 392358001 2/29/2016 Zn-65 -5.40E-Ol 3.49E+OO 9.88E+OO u ws SWL-2 392358001 2/29/2016 Zr-95 -l.93E+OO 3.31E+OO 8.92E+OO u ws SWL-3 392358002 2/29/2016 Ac-228 -4.85E+OO 5.43E+OO 1.57E+Ol u ws SWL-3 392358002 2/29/2016 Ag-108m -l.25E+OO l.19E+OO 3.54E+OO u ws SWL-3 392358002 2/29/2016 Ag-llOm -2.47E-Ol l.78E+OO 4.90E+OO u ws SWL-3 392358002 2/29/2016 Ba-140 l.14E+Ol l.18E+Ol 3.53E+Ol u ws SWL-3 392358002 2/29/2016 Be-7 -8.00E+OO l.29E+Ol 4.19E+Ol u ws SWL-3 392358002 2/29/2016 Ce-141 -3.26E+OO 3.61E+OO 9.66E+OO u ws SWL-3 392358002 2/29/2016 Ce-144 -6.79E+OO 8.86E+OO 2.91E+Ol u ws SWL-3 392358002 212912016 Co-57 -2.17E+OO l.34E+OO 3.78E+OO u ws SWL-3 392358002 2/29/2016 Co-58 l.44E+OO l.53E+OO 4.49E+OO u ws SWL-3 392358002 2/29/2016 Co-60 -6.81E-Ol l.37E+OO 4.34E+OO u ws SWL-3 392358002 2/29/2016 Cr-51 6.20E+OO l.61E+Ol 5.30E+Ol u ws SWL-3 392358002 2/29/2016 Cs-134 7.78E-OI 1.25E+OO 4.18E+OO u ws SWL-3 392358002 2/29/2016 Cs-137 4.00E+OO l.91E+OO 4.09E+OO u ws SWL-3 392358002 2/29/2016 Fe-59 3.46E-Ol 3.18E+OO 1.07E+OI u ws SWL-3 392358002 2/29/2016 I-131 l.77E+OO 5.96E+OO l.94E+OI u ws. SWL-3 392358002 2/29/2016 K-40 -5.38E+OO l.69E+Ol 5.33E+OI u ws SWL-3 392358002 2/29/2016 La-140 4.95E+OO 4.71E+OO 1.40E+Ol u ws SWL-3 392358002 2/29/2016 Mn-54 -7.40E-Ol 1.23E+OO 3.83E+OO u ws SWL-3 392358002 2/29/2016 Nb-95 l.27E-Ol 1.32E+OO 4.32E+OO u D-152 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-3 392358002 2/29/2016 Ru-103 3.12E-OI l.68E+OO 4.95E+OO u ws SWL-3 392358002 2/29/2016 Ru-106 l.45E+OI 1.16E+OI 3.48E+OI u ws SWL-3 392358002 2/29/2016 Sb-124 3.30E+OO 3.94E+OO l.22E+OI u ws SWL-3 392358002 2/29/2016 Sb-125 -2.03E-Ol 3.30E+OO l.06E+OI u ws SWL-3 392358002 2/29/2016 Se-75 -l.29E+OO 1.84E+OO 5.87E+OO u ws SWL-3 392358002 2/29/2016 Th-228 2.49E+OO 3.28E+OO 8.54E+OO u ws SWL-3 392358002 2/29/2016 Zn-65 5.72E-OI 2.84E+OO 8.27E+OO u ws SWL-3 392358002 2/29/2016 Zr-95 3.05E+OO 2.25E+OO 7.50E+OO u ws SWL-2 394511002 3/31/2016 H-3 -l.26E+02 4.41E+02 1.47E+03 u ws SWL-3 394511004 3/31/2016 H-3 6.57E+Ol 4.47E+02 1.46E+03 u ws SWL-2 394511001 3/31/2016 Ac-228 -l.50E+OO 3.62E+OO 8.25E+OO u ws SWL-2 394511001 3/31/2016 Ag-108111 1.28E+OO 5.77E-Ol l.74E+OO u ws SWL-2 394511001 3/31/2016 Ag-110111 l.29E+OO 7.43E-Ol 2.57E+OO u ws SWL-2 394511001 3/31/2016 Ba-140 5.14E-OI 5.91E+OO l.97E+Ol u ws SWL-2 394511001 3/31/2016 Be-7 3.96E+OO 5.64E+OO l.89E+Ol u ws SWL-2 394511001 3/31/2016 Ce-141 -l.21E-OI l.38E+OO 4.53E+OO u ws SWL-2 394511001 3/31/2016 Ce-144 2.87E+OO 4.14E+OO l.31E+Ol u ws SWL-2 394511001 3/31/2016 Co-57 -1.55E-02 5.41E-Ol l.72E+OO u ws SWL-2 394511001 3/31/2016 Co-58 -3.48E-OI 7.52E-Ol 2.05E+OO u ws SWL-2 394511001 3/31/2016 Co-60 -1.82E-02 5.76E-Ol l.87E+OO u ws SWL-2 394511001 3/31/2016 Cr-51 -l.09E+Ol 8.12E+OO 2.45E+Ol u ws SWL-2 394511001 3/31/2016 Cs-134 7.29E-01 5.05E-Ol 1.94E+OO u ws SWL-2 394511001 3/31/2016 Cs-137 l.75E+OO 7.82E-OI l.90E+OO u ws SWL-2 394511001 3/31/2016 Fe-59 2.36E+OO l.49E+OO 4.77E+OO u ws SWL-2 394511001 3/31/2016 1-131 l.56E+OO 3.89E+OO l.IOE+Ol u ws SWL-2 394511001 3/31/2016 K-40 2.17E+OO l.25E+OI 2.82E+Ol u ws SWL-2 394511001 3/31/2016 La-140 -9.63E+OO 5.20E+OO 5.71E+OO u ws SWL-2 394511001 3/31/2016 Mn-54 3.26E-Ol 6.52E-Ol l.83E+OO u ws SWL-2 394511001 3/31/2016 Nb-95 4.59E-Ol l.49E+OO 2.04E+OO u ws SWL-2 394511001 3/31/2016 Ru-103 5.24E-Ol 7.75E-Ol 2.53E+OO u ws SWL-2 394511001 3/31/2016 Ru-106 l.04E+OI 6.0lE+OO 1.73E+OI u ws SWL-2 394511001 3131/2016 Sb-124 7.33E-OI 1.53E+OO 5.15E+OO u ws SWL-2 394511001 3/31/2016 Sb-125 6.27E-01 l.46E+OO 4.94E+OO u ws SWL-2 394511001 3/31/2016 Se-75 l.84E-01 8.35E-01 2.75E+OO u ws SWL-2 394511001 3/31/2016 Th-228 6.37E-OI 1.82E+OO 3.73E+OO u ws SWL-2 394511001 3/31/2016 Zn-65 -3.29E+OO l.46E+OO 3.74E+OO u ws SWL-2 394511001 3/31/2016 Zr-95 4.IOE-01 l.21E+OO 3.96E+OO u ws SWL-3 394511003 3/31/2016 Ac-228 2.43E+OO 3.48E+OO 6.04E+OO u ws SWL-3 394511003 3/31/2016 Ag-108111 7.IOE-01 4.28E-01 l.35E+OO u ws SWL-3 394511003 3/31/2016 Ag-110111 l.82E+OO 8.93E-01 l.83E+OO u ws SWL-3 394511003 3/31/2016 Ba-140 l.36E+OI 5.84E+OO l.69E+OI u ws SWL-3 394511003 3/31/2016 Be-7 -3.25E+OO 4.65E+OO 1.49E+OI u ws SWL-3 394511003 3/31/2016 Ce-141 9.78E-OI l.23E+OO 3.77E+OO u ws SWL-3 394511003 3/31/2016 Ce-144 5.37E+OO 3.45E+OO l.07E+OI u ws SWL-3 394511003 3/31/2016 Co-57 3.52E-OI 4.24E-OI l.37E+OO u ws SWL-3 394511003 3/31/2016 Co-58 l.08E-OI 4.47E-Ol l.51E+OO u ws SWL-3 394511003 3/31/2016 Co-60 -8.86E-OI 7.84E-OI l.55E+OO u ws SWL-3 394511003 3131/2016 Cr-51 -8.04E+OO 6.44E+OO 2.03E+OI u ws SWL-3 394511003 3/31/2016 Cs-134 l.41E-OI

4.35E-01 l.47E+OO u WS SWL-3 394511003 3/31/2016 Cs-137 1.09E+OO 5.04E-01 l.41E+OO u D-153 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. 11DC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-3 394511003 3/31/2016 Fe-59 2.19E-01 l.03E+OO 3.42E+OO u ws SWL-3 394511003 3/31/2016 I-131 l.48E-01 2.89E+OO 9.64E+OO u ws SWL-3 394511003 3/31/2016 K-40 -l.47E+OI 9.26E+OO 2.llE+OI u ws SWL-3 394511003 3/31/2016 La-140 -l.80E+OO l.60E+OO 4.95E+OO u ws SWL-3 394511003 3/31/2016 Mn-54 4.37E-01 4.lOE-01 l.37E+OO u ws SWL-3 394511003 3/31/2016 Nb-95 5.02E-Ol 4.82E-Ol l.62E+OO u ws SWL-3 394511003 3/31/2016 Ru-103 2.65E-01 6.48E-01 l.88E+OO u ws SWL-3 394511003 3/31/2016 Ru-106 -3.65E+OO 4.13E+OO l.28E+Ol u ws SWL-3 394511003 3/31/2016 Sb-124 -8.31E-Ol l.36E+OO 3.74E+OO u ws SWL-3 394511003 3/31/2016 Sb-125 4.89E-Ol l.21E+OO 4.02E+OO u ws SWL-3 394511003 3/31/2016 Se-75 -l.16E+OO 7.06E-Ol 2.16E+OO u ws SWL-3 394511003 3/31/2016 Th-228 l.70E+OO l.73E+OO 3.23E+OO u ws SWL-3 394511003 3/31/2016 Zn-65 -l.77E+OO l.07E+OO 3.04E+OO u ws SWL-3 394511003 3/31/2016 Zr-95 -l.14E+OO 8.64E-Ol 2.68E+OO u ws SWL-2 396646001 4/30/2016 Ac-228 -2.52E+OO 6.48E+OO 2.02E+Ol u ws SWL-2 396646001 4/30/2016 Ag-108m l.23E-01 l.26E+OO 4.12E+OO u ws SWL-2 396646001 4/30/2016 Ag-llOm 3.0IE+OO 2.69E+OO 8.29E+OO u ws SWL-2 396646001 4/30/2016 Ba-140 l.75E+Ol l.69E+Ol 5.67E+Ol u ws SWL-2 396646001 4/30/2016 Be-7 9.54E+OO l.50E+Ol 5.0lE+Ol u ws SWL-2 396646001 4/30/2016 Ce-141 2.94E+OO 3.34E+OO l.lOE+Ol u ws SWL-2 396646001 4/30/2016 Ce-144 4.63E+OO 9.99E+OO 3.30E+Ol u ws SWL-2 396646001 4/30/2016 Co-57 3.56E+OO 3.47E+OO 4.25E+OO u ws SWL-2 396646001 4/30/2016 Co-58 -8.38E-03 1.52E+OO 5.0IE+OO u ws SWL-2 396646001 4/30/2016 Co-60 -6.74E-01 l.58E+OO 4.95E+OO u ws SWL-2 396646001 4/30/2016 Cr-51 l.17E+Ol l.82E+Ol 6.21E+Ol u ws SWL-2 396646001 4/30/2016 Cs-134 6.15E-01 l.48E+OO 4.48E+OO u ws SWL-2 396646001 4/30/2016 Cs-137 4.40E-01 l.43E+OO 4.88E+OO u ws SWL-2 396646001 4/30/2016 Fe-59 l.89E+OO 3.83E+OO 1.18E+Ol u ws SWL-2 396646001 4/30/2016 I-131 -6.75E+OO 7.58E+OO 2.3 IE+Ol u ws SWL-2 396646001 4/30/2016 K-40 -3.02E+Ol l.94E+Ol 5.75E+Ol u ws SWL-2 396646001 4/30/2016 La-140 -3.99E+OO 4.53E+OO l.23E+Ol u ws _SWL-2 396646001 4/30/2016 Mn-54 -l.48E+OO 1.43E+OO 4.lOE+OO u ws SWL-2 .396646001 4/30/2016 Nb-95 2.45E+OO l.82E+OO 6.32E+OO u ws SWL-2 396646001 4/30/2016 Ru-103 -5.75E+OO 2.53E+OO 5.61E+OO u ws SWL-2 396646001 4/30/2016 Ru-106 -4.62E+OO l.40E+Ol 3.92E+Ol u ws SWL-2 396646001 4/30/2016 Sb-124 5.08E+OO 4.49E+OO 1.50E+Ol u ws SWL-2 396646001 4/30/2016 Sb-125 -7.58E-01 3.60E+OO 1.16E+Ol u ws SWL-2 396646001 4/30/2016 Se-75 -l.44E+OO 2.04E+OO 6.55E+OO u ws SWL-2 396646001 4/30/2016 Th-228 -2.62E+OO 3.lOE+OO l.02E+Ol u ws SWL-2 396646001 4/30/2016 Zn-65 5.21E+OO 2.88E+OO l.21E+Ol u ws SWL-2 396646001 4/30/2016 Zr-95 -l.47E+OO 2.98E+OO 9.39E+OO u ws SWL-3 396646002 4/30/2016 Ac-228 l.79E+OO 4.45E+OO 1.36E+Ol u ws SWL-3 396646002 4/30/2016 Ag-108m -L17E+OO 8.79E-01 2.53E+OO u ws SWL-3 396646002 4/30/2016 Ag-llOm -2.08E+OO l.30E+OO 3.45E+OO u ws SWL-3 396646002 4/30/2016 Ba-140 l.12E+Ol 9.43E+OO 3.llE+Ol u ws SWL-3 396646002 4/30/2016 Be-7 l.52E+OO 9.15E+OO 2.98E+Ol u ws SWL-3 396646002 4/30/2016 Ce-141 -5.34E+OO 3.78E+OO 7.lOE+OO u ws SWL-3 396646002 4/30/2016 Ce-144 -7.42E+OO 7.05E+OO 2.13E+Ol u ws SWL-3 396646002 4/30/2016 Co-57 -6.32E-01 8.82E-01 2.75E+OO u ws SWL-3 396646002 4/30/2016 Co-58 -2.29E+OO l.26E+OO 3.31E+OO u D-1.54 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. 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-9.45E-02 6.16E-Ol l.99E+OO u ws SWL-3 398615002 5/31/2016 Ba-140 -3.03E-02 5.35E+OO l.79E+Ol u ws SWL-3 398615002 5/31/2016 Be-7 4.04E+OO 4.96E+OO l.67E+Ol u D-155 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-3 398615002 5/31/2016 Ce-141 l.77E+OO l.42E+OO 4.30E+OO u ws SWL-3 398615002 5/31/2016 Ce-144 -l.94E+OO 3.60E+OO l.19E+Ol u ws SWL-3 398615002 5/31/2016 Co-57 5.14E-01 4.79E-Ol l.58E+OO u ws SWL-3 398615002 5/31/2016 Co-58 -4.38E-Ol 5.20E-01 l.62E+OO u ws SWL-3 398615002 5/31/2016 Co-60 3.50£-01 4.86E-01 l.63E+OO u ws SWL-3 398615002 5/31/2016 Cr-51 -5.72E+OO 8.54E+OO 2.36E+Ol u ws SWL-3 398615002 5/31/2016 Cs-134 -3.92£-01 5.71E-01 1.55E+OO u ws SWL-3 398615002 5/31/2016 Cs-137 2.15£-02 4.75E-01 1.57E+OO u ws SWL-3 398615002 5/31/2016 Fe-59 9.41E-01 1.15E+OO 3.90E+OO u ws SWL-3 398615002 5/31/2016 I-131 2.74£-01 3.58E+OO l.16E+Ol u ws SWL-3 398615002 5/31/2016 K-40 6.74E+OO l.llE+Ol l.43E+Ol u ws SWL-3 398615002 5/31/2016 La-140 -2.71E+OO 2.02E+OO 5.93E+OO u ws SWL-3 398615002 5/31/2016

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Mn-54 -5.61E-02 4.28E-01 l.38E+OO u ws SWL-2 400814001 6/30/2016 Nb-95 1.53£-01 8.36E-01 l.80E+OO u ws SWL-2 400814001 6/30/2016 Ru-103 -8.0IE-01 7.39E-01 2.03E+OO u ws SWL-2 400814001 6/30/2016 Ru-106 6.94E+OO 4.21E+OO l.34E+Ol u ws SWL-2 400814001 6/30/2016 Sb-124 2.90E-01 l.19E+OO 3.99E+OO u ws SWL-2 400814001 6/30/2016 Sb-125 -8.22E-01 l.19E+OO 3.72E+OO u ws SWL-2 400814001 6/30/2016 Se-75 -4.60E-01 6.62E-Ol 2.14E+OO u ws SWL-2 400814001 6/30/2016 Th-228 3.86E+OO l.77E+OO 3.28E+OO Ul ws SWL-2 400814001 6/30/2016 Zn-65 8.90E-01 9.76E-01 2.83E+OO u D-156 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws* SWL-2 400814001 6/30/2016 Zr-95 2.02E+OO 1.22E+OO 3.13E+OO u ws SWL-3 400814003 6/30/2016 Ac-228 -9.22E-01 3.09E+OO 5.83E+OO u ws SWL-3 400814003 6/30/2016 Ag-108m -1.42E-01 3.75E-01 1.25E+OO u ws SWL-3 400814003 6/30/2016 Ag-llOm 3.18E-01 5.57E-01 l.89E+OO u ws SWL-3 400814003 6/30/2016 Ba-140 -5.34E+OO 6.18E+OO l.97E+Ol u ws SWL-3 400814003 6/30/2016 Be-7 8.49E+OO 5.42E+OO l.49E+Ol u ws SWL-3 400814003 6/30/2016 Ce-141 l.32E+OO l.92E+OO 4.18E+OO u ws SWL-3 400814003 6/30/2016 Ce-144 7.13E+OO 3.52E+OO 1.07E+Ol u ws SWL-3 400814003 6/30/2016 Co-57 7.29E-01 4.35E-01 1.38E+OO u WS SWL-3 400814003 6/30/2016 Co-58 -3.66E-01 5.41E-01 l.64E+OO u ws SWL-3 400814003 6/30/2016 Co-60 -l.70E-01 4.45E-01 1.43E+OO u ws SWL-3 400814003 6/30/2016 Cr-51 -3.24E+OO 7.45E+OO 2.30E+Ol u ws SWL-3 400814003 6/30/2016 Cs-134 -l.OSE-01 5.39E-01 l.57E+OO u ws SWL-3 400814003 6/30/2016 Cs-137 6.95E-01 l.09E+OO 1.33E+OO u ws SWL-3 400814003 6/30/2016 Fe-59 l.96E+OO l.24E+OO 3.98E+OO u ws SWL-3 400814003 6/30/2016 I-131 2.49E+OO 5.08E+OO 1.58E+Ol u ws SWL-3 400814003 6/30/2016 K-40 1.31E+Ol l.13E+Ol 1.38E+Ol u ws SWL-3 400814003 6/30/2016 La-140 4.51E-Ol 2.20E+OO 7.41E+OO u ws SWL-3 400814003 6/30/2016 Mn-54 -l.16E-01 4.57E-01 l.46E+OO u ws SWL-3 400814003 6/30/2016 Nb-95 3.59E-02 5.45E-Ol l.77E+OO u ws SWL-3 400814003 6/30/2016 Ru-103 2.33E-01 7.31E-01 2.14E+OO u ws SWL-3 400814003 6/30/2016 Ru-106 -2.12E-01 3.97E+OO 1.30E+Ol u ws SWL-3 400814003 6/30/2016 Sb-124 -3.54E-Ol 1.25E+OO 4.lOE+OO u ws SWL-3 400814003 6/30/2016 Sb-125 l.05E+OO 1.20E+OO 4.0lE+OO u ws SWL-3 400814003 6/30/2016 Se-75 2.49E-Ol 7.03E-01 2.23E+OO u ws SWL-3 400814003 6/30/2016 Th-228 -2.91E-Ol l.40E+OO 3.llE+OO u ws SWL-3 400814003 6/30/2016 Zn-65 -3.47E-02 9.14E-01 3.02E+OO u ws SWL-3 400814003 6/30/2016 Zr-95 -8.92E-02 9.17E-01 2.97E+OO u ws SWL-2 402876001 7131/2016 Ac-228 -4.88E+OO 5.24E+OO l.03E+Ol u ws SWL-2 402876001 7/31/2016 Ag-108m 1.04E+OO 6.37E-01 2.04E+OO u ws SWL-2 402876001 7/3112016 Ag-llOm -1.62E+OO l.16E+OO 3.07E+OO u WS SWL-2 402876001 7/3112016 Ba-140 -1.49E+Ol 7.64E+OO 2.07E+Ol u ws SWL-2 402876001 7/31/2016 Be-7 2.52E-01 6.78E+OO 2.24E+Ol u ws SWL-2 402876001 7/3112016 Ce-141 -2.37E+OO l.89E+OO 4.48E+OO u ws SWL-2 402876001 7/31/2016 Ce-144 3.63E+OO 4.07E+OO 1.34E+Ol u ws SWL-2 402876001 7/31/2016 Co-57 -1.0lE+OO 5.71E-Ol l.69E+OO u WS SWL-2 402876001 7/31/2016 Co-58 -l.82E-01 7.07E-01 2.33E+OO u ws SWL-2 402876001 7/31/2016 Co-60 -1.16E-01 7.51E-01 2.50E+OO u ws SWL-2 402876001 7/31/2016 Cr-51 -4.34E+OO 7.96E+OO 2.64E+Ol u ws .SWL-2 402876001 7/3112016 Cs-134 l.15E+OO 7.88E-01 2.61E+OO u ws SWL-2 402876001 7/31/2016 Cs-137 l.31E-01 6.99E-01 2.26E+OO u ws SWL-2 402876001 7/31/2016 Fe-59 3.33E+OO l.93E+OO 6.18E+OO u ws SWL-2 402876001 7/31/2016 I-131 -2.04E-01 3.46E+OO 1.16E+Ol u ws SWL-2 402876001 7/31/2016 K-40 l.59E+Ol 1.21E+Ol 2.28E+Ol u ws SWL-2 402876001 7131/2016 La-140 -2.71E-01 2.41E+OO 7.87E+OO u ws SWL-2 402876001 7/3112016 Mn-54 2.02E-01 6.50E-01 2.18E+OO u ws SWL-2 402876001 7/31/2016 Nb-95 1.55E+OO 8.46E-Ol 2.74E+OO u ws SWL-2 402876001 7/31/2016 Ru-103 -3.71E-Ol 9.llE-01 2.94E+OO u ws SWL-2 402876001 7/3112016 Ru-106 -l.16E+Ol 9.64E+OO l.97E+Ol u ws SWL-2 402876001 7/31/2016 Sb-124 -l.58E+OO l.91E+OO 5.83E+OO u D-157 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-2 402876001 7/31/2016 Sb-125 l.38E+OO l.75E+OO 5.82E+OO u ws SWL-2 402876001 7/31/2016 Se-75 -4.15E-01 8.94E-01 2.80E+OO u ws SWL-2 402876001 7/31/2016 Th-228 3.65E+OO 2.63E+OO 3.61E+OO UI ws SWL-2 402876001 7/31/2016 Zn-65 2.25E-02 1.59E+OO 5.16E+OO u ws SWL-2 402876001 7/31/2016 Zr-95 2.97E-01 1.28E+OO 4.33E+OO u ws SWL-3 402876002 7/31/2016 Ac-228 -1.54E+OO 3.64E+OO 7.87E+OO u ws SWL-3 402876002 7131/2016 Ag-108m -2.48E-Ol 4.85E-01 l.57E+OO u ws SWL-3 402876002 7131/2016 Ag-llOm -5.05E-01 7.61E-01 2.40E+OO u ws SWL-3 402876002 7131/2016 Ba-140 -6.41E+OO 5.90E+OO l.80E+Ol u ws SWL-3 402876002 7/31/2016 Be-7 5.41E+OO 5.78E+OO 1.89E+Ol u ws SWL-3 402876002 7/31/2016 Ce-141 2.69E+OO l.44E+OO 4.32E+OO u ws SWL-3 402876002 7/31/2016 Ce-144 2.13E+OO 3.68E+OO l.23E+Ol u ws SWL-3 402876002 7/31/2016 Co-57 -6.79E-01 5.26E-01 l.66E+OO u ws SWL-3 402876002 7/31/2016 Co-58 -l.86E-01 7.13E-01 1.99E+OO u ws SWL-3 402876002 7/31/2016 Co-60 -9.09E-01 7.17E-01 1.76E+OO u ws SWL-3 402876002 7/31/2016 Cr-51 -2.49E+OO 7.23E+OO 2.41E+Ol u ws SWL-3 402876002 7/31/2016 Cs-134 5.20E-03 6..77E-01 l.92E+OO u ws SWL-3 402876002 7/31/2016 Cs-137 2.99E-Ol 5.35E-01 l.80E+OO u ws SWL-3 402876002 7/31/2016 Fe-59 l.91E+OO 1.45E+OO 4.79E+OO u ws SWL-3 402876002 7131/2016 I-131 -6.36E+OO 3.94E+OO 1.0lE+Ol u ws SWL-3 402876002 7/31/2016 K-40 -1.92E+Ol l.15E+Ol 2.40E+Ol u ws SWL-3 402876002 7/31/2016 La-140 -3.95E+OO 2.14E+OO 5.90E+OO u ws SWL-3 402876002 7/31/2016 Mn-54 -1.15E+OO l.09E+OO l.91E+OO u ws SWL-3 402876002 7/31/2016 Nb-95 8.28E-Ol 6.74E-Ol 2.21E+OO u ws SWL-3 402876002 7/31/2016 Ru-103 1.00E+OO 9.00E-01 2.54E+OO u ws SWL-3 402876002 7/31/2016 Ru-106 -l.30E+OO 4.99E+OO 1.66E+Ol u ws SWL-3 402876002 7131/2016 Sb-124 -4.83E-Ol 1.63E+OO 5.33E+OO u ws SWL-3 402876002 7/31/2016 Sb-125 -1.79E+OO 1.57E+OO 4.86E+OO u ws SWL-3 402876002 7/31/2016 Se-75 -1.44E-Ol 8.03E-Ol 2.58E+OO u ws SWL-3 402876002 7131/2016 Th-228 4.20E+OO 2.23E+OO 4.06E+OO UI ws SWL-3 402876002 7/31/2016 Zn-65 2.60E+OO 1.79E+OO 4.02E+OO u ws SWL-3 402876002 7/31/2016 Zr-95 6.21E-Ol l.IOE+OO 3.68E+OO u ws SWL-2 405173001 8/31/2016 Ac-228 -3.49E+OO 3.03E+OO 7.15E+OO u ws SWL-2 405173001 8/31/2016 Ag-108m -4.20E-Ol 4.17E-Ol l.30E+OO u ws SWL-2 405173001 8/31/2016 Ag-llOm -3.26E-Ol 6.09E-Ol 2.00E+OO u ws SWL-2 405173001 8/31/2016 Ba-140 3.62E+OO 6.55E+OO 2.17E+Ol u ws SWL-2 405173001 8/31/2016 Be-7 l.06E+Ol 6.19E+OO l.80E+Ol u ws SWL-2 405173001 8131/2016 Ce-141 -2.16E+OO 2.03E+OO 3.75E+OO u ws SWL-2 405173001 8/31/2016 Ce-144 4.36E+OO 3.18E+OO 9.91E+OO u ws SWL-2 405173001 8/31/2016 Co-57 4.49E-02 3.90E-Ol l.25E+OO u ws SWL-2 405173001 8/31/2016 Co-58 3.12E-01 5.31E-01 1.72E+OO u ws SWL-2 405173001 8/31/2016 Co-60 -l.23E-03 4.43E-01 1.45E+OO u ws SWL-2 405173001 8/31/2016 Cr-51 l.llE+Ol 7.21E+OO 2.36E+Ol u ws SWL-2 405173001 8/31/2016 Cs-134 1.88E+OO 8.53E-Ol 1.86E+OO UI ws SWL-2 405173001 8131/2016 Cs-137 2.llE-01 5.llE-01 1.66E+OO u ws SWL-2 405173001 8/31/2016 Fe-59 9.73E-Ol 1.28E+OO 4.35E+OO u ws SWL-2 405173001 8/31/2016 I-131 -5.02E+OO 4.39E+OO l.37E+Ol u ws SWL-2 405173001 8/31/2016 K-40 4.50E+OO 1.46E+Ol l.43E+Ol u ws SWL-2 405173001 8/31/2016 La-140 -2.21E+OO 2.32E+OO 6.81E+OO u ws SWL-2 405173001 8/31/2016 Mn-54. l.21E-01 4.26E-01 l.46E+OO u D-158 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-2 405173001 8/31/2016 Nb-95 1.26E+OO 7.0lE-01 1.84E+OO u ws SWL-2 405173001 8/31/2016 Ru-103 l.13E-Ol 7.45E-Ol 2.20E+OO u ws SWL-2 405173001 8/31/2016 Ru-106 3.35E+OO 4.12E+OO 1.35E+Ol u ws SWL-2 405173001 8/31/2016 Sb-124 -2.24E+OO 1.58E+OO 3.46E+OO u ws SWL-2 405173001 8/31/2016 Sb-125 -6.96E-Ol 1.20E+OO 3.86E+OO u ws SWL-2 405173001 8/31/2016 Se-75 7.09E-Ol 6.36E-Ol 2.15E+OO u ws SWL-2 405173001 8/31/2016 Th-228 2.28E-02 1.70E+OO 3.31E+OO u ws SWL-2 405173001 8/31/2016 Zn-65 8.18E-Ol 9.41E-Ol 3.20E+OO u ws SWL-2 405173001 8/31/2016 Zr-95 -3.60E-Ol 1.03E+OO 3.22E+OO u ws SWL-3 405173002 8/31/2016 Ac-228 l.12E+OO 3.27E+OO 6.54E+OO u ws SWL-3 405173002 8/31/2016 Ag-108m 8.45E-02 3.76E-Ol 1.27E+OO u ws SWL-3 405173002 8/3112016 Ag-llOm 1.70E-01 5.81E-Ol 1.88E+OO u ws SWL-3 405173002 8/31/2016 Ba-140 9.26E+OO 6.93E+OO 2.29E+Ol u WS SWL-3 405173002 8131/2016 Be-7 6.67E+OO 5.08E+OO 1.69E+Ol u ws SWL-3 405173002 8/31/2016 Ce-141 -6.39E-Ol l.24E+OO 3.68E+OO u ws SWL-3 405173002 8/31/2016 Ce-144 1.20E+OO 2.98E+OO 9.80E+OO u ws SWL-3 405173002 8/31/2016 Co-57 2.23E-01 3.91E-Ol 1.29E+OO u ws SWL-3 405173002 8/31/2016 Co-58 3.57E-Ol 5.27E-Ol 'l.73E+OO u ws SWL-3 405173002 8/31/2016 Co-60 3.64E-01 4.35E-01 1.39E+OO u ws SWL-3 405173002 8/31/2016 Cr-51 -4.73E+OO 6.51E+OO 2.17E+Ol u ws SWL-3 405173002 8/31/2016 Cs-134 2.24E-Ol 5.48E-01 1.60E+OO u ws SWL-3 405173002 8/31/2016 Cs-137 -9.57E-01 9.69E-Ol 2.07E+OO u ws SWL-3 405173002 8/31/2016 Fe-59 -4.15E-02 l.12E+OO 3.77E+OO u ws SWL-3 405173002 8/31/2016 I-131 6.38E+OO 4.31E+OO 1.44E+Ol u ws SWL-3 405173002 8/31/2016 K-40 5.38E+OO 1.22E+Ol 1.30E+Ol u ws SWL-3 405173002 8/31/2016 La-140 1.43E+OO 2.00E+OO 6.73E+OO u ws SWL-3 405173002 8/31/2016 Mn-54 3.09E-Ol 4.51E-01 1.48E+OO u ws SWL-3 405173002 8/31/2016 Nb-95 -2.94E-02 5.57E-Ol 1.80E+OO u ws SWL-3 405173002 8/31/2016 Ru-103 -3.27E-01 6.96E-01 2.04E+OO u ws SWL-3 405173002 8/31/2016 Ru-106 l.51E+OO 4.lOE+OO 1.36E+Ol u WS SWL-3 405173002 8/31/2016 Sb-124 -5.0lE-01 l.17E+OO 3.65E+OO u WS SWL-3 405173002 8/31/2016 Sb-125 -2.16E+OO l.20E+OO 3.47E+OO u ws SWL-3 405173002 8/31/2016 Se-75 l.17E+OO 6.88E-01 2.09E+OO u ws SWL-3 405173002 8/31/2016 Th-228 l.48E+OO l.96E+OO 3.36E+OO u ws SWL-3 405173002 8/31/2016 Zn-65 -3.83E-Ol 9.30E-Ol 3.07E+OO u ws SWL-3 405173002 8/31/2016 Zr-95 -9.62E-Ol l.03E+OO 3.12E+OO u ws SWL-2 407555002 9/30/2016 H-3 -7.75E+02 5.61E+02 l.96E+03 u ws SWL-3 407555004 9/30/2016 H-3 -l.05E+03 5.55E+02 l.98E+03 u WS SWL-2 407555001 9/30/2016 Ac-228 -3.55E+OO 2.70E+OO 5.31E+OO u ws SWL-2 407555001 9/30/2016 Ag-108m -4.53E-01 3.15E-01 9.53E-Ol u ws SWL-2 407555001 9/30/2016 Ag-llOm 1.58E-01 4.77E-Ol 1.53E+OO u ws SWL-2 407555001 9/30/2016 Ba-140 -2.56E+OO 5.81E+OO 1.67E+Ol u ws SWL-2 407555001 9/30/2016 Be-7 -3.81E+OO 4.31E+OO l.21E+Ol u ws SWL-2 407555001 9/30/2016 Ce-141 -1.30E-Ol l.03E+OO 3.0IE+OO u ws SWL-2 407555001 9/30/2016 Ce-144 -7.96E-Ol 2.44E+OO 7.71E+OO u ws SWL-2 407555001 9/30/2016 Co-57 l.70E-Ol 3.12E-01 1.00E+OO u ws SWL-2 407555001 9/30/2016 Co-58 5.93E-Ol 5.60E-Ol 1.32E+OO u WS SWL-2 407555001 9/30/2016 Co-60 -l.41E+OO 7.69E-01 l.21E+OO u ws SWL-2 407555001 9/30/2016 Cr-51 -4.92E-01 4.91E+OO 1.66E+Ol u ws SWL-2 407555001 9/30/2016 Cs-134 9.02E-01 4.37E-Ol 1.33E+OO u D-159 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. IvIDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-2 407555001 9/30/2016 Cs-137 l.84E-Ol 3.53E-01 1.16E+OO u ws SWL-2 407555001 9/30/2016 Fe-59 -l.05E-03 9.86E-Ol 2.93E+OO u ws SWL-2 407555001 9/30/2016 I-131 -4.57E-Ol 3.30E+OO 1.IIE+Ol u ws SWL-2 407555001 9/30/2016 K-40 -l.IOE+Ol 8.21E+OO l.68E+Ol u ws SWL-2 407555001 9/30/2016 La-140 l.84E+OO l.71E+OO 5.13E+OO u ws SWL-2 407555001 9/30/2016 Mn-54 -l.OSE-01 3.58E-01 1.13E+OO u ws SWL-2 407555001 9/30/2016 Nb-95 3.48E-01 4.67E-Ol l.52E+OO u ws SWL-2 407555001 9/30/2016 Ru-103 -6.92E-02 5.66E-01 l.67E+OO u ws SWL-2 407555001 9/30/2016 Ru-106 -2.95E+OO 3.28E+OO l.02E+Ol u ws SWL-2 407555001 9/30/2016 Sb-124 2.34E-01 9.75E-01 3.22E+OO u ws SWL-2 407555001 9/30/2016 Sb-125 l.70E+OO 9.87E-01 3.16E+OO u ws SWL-2 407555001 9/30/2016 Se-75 -6.31E-01 5.04E-01 1.62E+OO u ws SWL-2 407555001 9/30/2016 Th-228 2.09E-Ol 1.51E+OO 2.50E+OO u ws SWL-2 407555001 9/30/2016 Zn-65 3.50E-Ol 7.55E-Ol 2.40E+OO u ws SWL-2 407555001 9/30/2016 Zr-95 -l.86E-02 7.62E-Ol 2.45E+OO u ws SWL-3 407555003 9/30/2016 Ac-228 l.92E-Ol 3.40E+OO 4.ISE+OO u ws SWL-3 407555003 9/30/2016 Ag-108m 3.77E-02 3.0IE-01 l.03E+OO u ws SWL-3 407555003 9/30/2016 Ag-llOm -3.40E-Ol 4.92E-Ol l.52E+OO u ws SWL-3 407555003 9/30/2016 Ba-140 -7.56E-Ol 5.27E+OO 1.77E+Ol u ws SWL-3 407555003 9/30/2016 Be-7 4.SIE-02 4.0IE+OO l.36E+Ol u ws SWL-3 407555003 9/30/2016 Ce-141 4.35E-Ol 2.13E+OO 3.04E+OO u ws SWL-3 407555003 9/30/2016 Ce-144 -2.63E+OO 2.40E+OO 7.56E+OO u ws SWL-3 407555003 9/30/2016 Co-57 -l.05E-Ol 3.llE-01 l.03E+OO u ws SWL-3 407555003 9/30/2016" Co-58 -4.91E-Ol 4.22E-Ol l.26E+OO u ws SWL-3 407555003 9/30/2016 Co-60 l.25E-02 3.32E-Ol 1.12E+OO u ws SWL-3 407555003 9/30/2016 Cr-51 5.30E+OO 5.91E+OO l.87E+Ol u ws SWL-3 407555003 9/30/2016 Cs-134 l.23E-Ol 3.85E-01 l.27E+OO u ws SWL-3 407555003 9/30/2016 Cs-137 4.52E-Ol 3.71E-Ol 1.23E+OO u ws SWL-3 407555003 9/30/2016 Fe-59 -l.09E+OO 1.05E+OO 3.06E+OO u ws SWL-3 407555003 9/30/2016 I-131 -5.17E+OO 4.27E+OO l.23E+Ol u ws SWL-3 407555003 9/30/2016 K-40 -6.77E+OO 7.88E+OO l.99E+Ol u ws SWL-3 407555003 9/30/2016 La-140 -7.92E-Ol l.66E+OO 5.29E+OO u ws SWL-3 407555003 9/30/2016 Mn-54 -l.40E-Ol 3.59E-Ol 1.15E+OO u ws SWL-3 407555003 9/30/2016 Nb-95 l.78E-Ol

7.90E-01 l.62E+OO u ws SWL-3 407555003 9/30/2016 Ru-103 -l.94E-01 5.46E-01 l.63E+OO u ws SWL-3 407555003 9/30/2016 Ru-106 2.36E+OO 3.54E+OO 1.14E+Ol u ws SWL-3 407555003 9/30/2016 Sb-124 8.33E-Ol 9.78E-01 3.33E+OO u ws SWL-3 407555003 9/30/2016 Sb-125 -2.07E-Ol 8.93E-Ol 3.03E+OO u ws SWL-3 407555003 9/30/2016 Se-75 -4.64E-02 5.25E-Ol l.67E+OO u ws SWL-3 407555003 9/30/2016 Th-228 l.49E+OO l.58E+OO 2.60E+OO u ws SWL-3 407555003 9/30/2016 Zn-65 7.90E-Ol 7.64E-Ol 2.48E+OO u ws SWL-3 407555003 9/30/2016 Zr-95 -6.83E-Ol 8.05E-01 2.50E+OO u ws SWL-2 409620001 10/31/2016 Ac-228 3.13E+OO 4.77E+OO 8.63E+OO u ws SWL-2 409620001 10/31/2016 Ag-108m 4.94E-Ol 4.82E-Ol l.61E+OO u ws SWL-2 409620001 10/31/2016 Ag-llOm 5.91E-02 7.14E-Ol 2.42E+OO u ws SWL-2 409620001 10/31/2016 Ba-140 2.82E+OO 4.94E+OO l.64E+Ol u ws SWL-2 409620001 10/31/2016 Be-7 -3.88E+OO 5.55E+OO I.76E+Ol u ws SWL-2 409620001 10/31/2016 Ce-141 -5.66E+OO 2.28E+OO 4.04E+OO u ws SWL-2 409620001 10/31/2016 Ce-144 7.39E-01 3.87E+OO l.25E+Ol u ws SWL-2 409620001 10/31/2016 Co-57 -5.25E-Ol 5.14E-Ol l.57E+OO u D-160 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-2 409620001 10/31/2016 Co-58 -l.07E-02 5.78E-OI 1.97E+OO u ws SWL-2 409620001 10/31/2016 Co-60 4.60E-01 5.44E-01 l.84E+OO u ws SWL-2 409620001 10/31/2016 Cr-51 9.31E+OO 6.82E+OO 2.27E+Ol u ws SWL-2 409620001 10/31/2016 Cs-134 6.76E-01 6.83E-OI 2.0IE+OO u ws SWL-2 409620001 10/31/2016 Cs-137 -9.85E-02 5.68E-01 l.81E+OO u ws SWL-2 409620001 10/31/2016 Fe-59 3.54E+OO 1.49E+OO 4.44E+OO u ws SWL-2 409620001 10/31/2016 I-131 -8.73E-01 2.42E+OO 7.99E+OO u ws SWL-2 409620001 10/31/2016 K-40 2.05E+OO 1.37E+Ol l.60E+OI u ws SWL-2 409620001 10/31/2016 La-140 -l.81E-OI l.60E+OO 5.09E+OO u ws SWL-2 409620001 10/31/2016 Mn-54 --3.21E-01 5.44E-OI 1.55E+OO u ws SWL-2 409620001 10/31/2016 Nb-95 -l.14E+OO 8.25E-01 2.00E+OO u ws SWL-2 409620001 10/31/2016 Ru-103 -4.02E-01 7.07E-01 l.99E+OO u WS SWL-2 409620001 10/31/2016 Ru-106 -5.44E-01 4.99E+OO l.61E+Ol u ws SWL-2 409620001 10/31/2016 Sb-124 1.1 IE-01 l.47E+OO 4.72E+OO u ws SWL-2 409620001 10/31/2016 Sb-125 -6.12E-OI 1.52E+OO 4.95E+OO u ws SWL-2 409620001 10/31/2016 Se-75 -3.73E-01 7.22E-01 2.42E+OO u ws SWL-2 409620001 10/31/2016 Th-228 2.08E+OO 2.48E+OO 4.00E+OO u ws SWL-2 409620001 10/31/2016 Zn-65 6.06E-OI 1.14E+OO 3.86E+OO u ws SWL-2 409620001 10/31/2016 Zr-95 l.65E+OO 1.43E+OO 3.72E+OO u ws SWL-3 409620002 10/31/2016 Ac-228 2.91E+OO 3.61E+O_O 8.54E+OO u ws SWL-3 409620002 10/31/2016 Ag-108m 2.29E-01 4.86E-01 1.62E+OO u ws SWL-3 409620002 10/3112016 Ag-llOm 2.17E+OO 8.22E-Ol 2.58E+OO u ws SWL-3 409620002 10/31/2016 Ba-140 -2.llE+OO 7.50E+OO 1.72E+OI u ws SWL-3 409620002 10/31/2016 Be-7 3.43E+Ol 1.78E+Ol l.79E+OI UI ws SWL-3 409620002 10/31/2016 Ce-141 -3.84E-Ol 1.43E+OO 4.38E+OO u ws SWL-3 409620002 10/31/2016 Ce-144 -2.72E+OO 4.54E+OO 1.38E+Ol u ws SWL-3 409620002 10/31/2016 Co-57 4.41E-01 5.83E-01 l.82E+OO u ws SWL-3 409620002 10/31/2016 Co-58 -3.95E-01 6.08E-01 l.84E+OO u ws SWL-3 409620002 10/31/2016 Co-60 9.04E-OI 5.79E-OI l.98E+OO u ws SWL-3 409620002 10/31/2016 Cr-51 -l.06E+OO 6.61E+OO 2.19E+OI u ws SWL-3 409620002 10/31/2016 Cs-134 -2.22E-01 1.02E+OO l.99E+OO u ws SWL-3 409620002 10/31/2016 Cs-137 8.29E-OI 6.49E-01 2.12E+OO u ws SWL-3 "409620002 10/31/2016 Fe-59 -l.30E-Ol 1.33E+OO 4.45E+OO u ws SWL-3 409620002 10/31/2016 I-131 -4.75E+OO 2.88E+OO 8.35E+OO u ws SWL-3 409620002 10/31/2016 K-40 -l.98E+Ol 1.15E+Ol 2.62E+OI u ws SWL-3 409620002 10/31/2016 La-140 -1.50E+OO 1.88E+OO 5.76E+OO u ws SWL-3 409620002 10/31/2016 Mn-54 3.46E-Ol 5.79E-OI 1.88E+OO u ws SWL-3 409620002 10/31/2016 Nb-95 -3.16E-OI 7.76E-Ol l.98E+OO u WS SWL-3 409620002 10/31/2016 Ru-103 3.71E-01 8.23E-01 2.45E+OO u ws SWL-3 409620002 10/31/2016 Ru-106 -7.13E+OO 5.71E+OO l.67E+Ol u ws SWL-3 409620002 10/31/2016

_Sb-124 l.05E+OO l.51E+OO 5.12E+OO u ws SWL-3 409620002 10/31/2016 Sb-125 -5.42E-Ol 1.47E+OO 4.75E+OO u ws SWL-3 409620002 10/31/2016 Se-75 -7.97E-OI 8.02E-01 2.56E+OO u ws SWL-3 409620002 10/31/2016 Th-228 6.34E-OI 2.26E+OO 4.20E+OO u WS SWL-3 409620002 10/3112016 Zn-65 8.47E-01 1.31E+OO 4.19E+OO u ws SWL-3 409620002 10/31/2016 Zr-95 1.72E+OO 1.14E+OO 3.73E+OO u ws SWL-2 411589001 11/30/2016 Ac-228 5.24E+OO 5.69E+OO l.89E+Ol u WS SWL-2 411589001 11/30/2016 Ag-108m -2.73E-Ol 1.06E+OO 3.08E+OO u ws SWL-2 411589001 11/30/2016 Ag-llOm 1.33E-Ol 1.63E+OO 5.53E+OO u ws SWL-2 411589001 11/30/2016 Ba-140 -3.40E+OO 1.12E+Ol 3.57E+Ol u D-161 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-2 411589001 11/30/2016 Be-7 6.47E+OO l.22E+Ol 4.15E+Ol u ws SWL-2 411589001 11/30/2016 Ce-141 -2.94E+OO 2.44E+OO 6.90E+OO u ws SWL-2 411589001 11/30/2016 Ce-144 -4.55E+OO 6.48E+OO 2.06E+Ol u ws SWL-2 411589001 11/30/2016 Co-57 4.23E+OO l.61E+OO 2.77E+OO UI ws SWL-2 411589001 11130/2016 Co-58 9.08E-Ol l.30E+OO 4.36E+OO u ws SWL-2 411589001 11/30/2016 Co-60 -1.llE+OO l.36E+OO 3.81E+OO u ws SWL-2 411589001 11/30/2016 Cr-51 -l.28E+Ol l.29E+Ol 4.06E+Ol u ws SWL-2 411589001 11/30/2016 Cs-134 4.93E-Ol 1.16E+OO 4.09E+OO u ws SWL-2 411589001 11/30/2016 Cs-137 -7.52E-Ol 9.98E-Ol 2.85E+OO u ws SWL-2 411589001 11/30/2016 Fe-59 -l.92E+OO 2.66E+OO 7.81E+OO u ws SWL-2 411589001 11/30/2016 I-131 l.53E+OO 4.88E+OO l.68E+Ol u ws SWL-2 411589001 11/30/2016 K-40 l.03E+Ol l.88E+Ol 6.78E+Ol u ws SWL-2 411589001 11/30/2016 La-140 8.85E+OO 8.70E+OO l.35E+Ol u ws SWL-2 411589001 11/30/2016 Mn-54 2.45E+OO l.26E+OO 3.91E+OO u ws SWL-2 411589001 11/30/2016 Nb-95 -9.0IE-01 l.43E+OO 4.18E+OO u ws SWL-2 411589001 11/30/2016 Ru-103 l.35E+OO l.50E+OO 5.17E+OO u ws SWL-2 411589001 11/30/2016 Ru-106 -5.42E+OO l.08E+Ol 3.29E+Ol u ws SWL-2 411589001 11/30/2016 Sb-124 -3.28E+OO 3.53E+OO 9.83E+OO u ws SWL-2 411589001 11/30/2016 Sb-125 1.0lE+Ol 4.32E+OO 1.40E+Ol u ws SWL-2 411589001 11/30/2016 Se-75 -1.15E+OO l.83E+OO 5.50E+OO u ws SWL-2 411589001 11/30/2016 Th-228 l.91E-Ol 3.41E+OO 7.58E+OO u ws SWL-2 411589001 11/30/2016 Zn-65 1.19E-Ol 2.68E+OO 7.77E+OO u ws SWL-2 411589001 11/30/2016 Zr-95 7.14E-02 2.41E+OO 7.67E+OO u ws SWL-3 411589002 11/30/2016 Ac-228 2.IOE-01 4.78E+OO l.54E+Ol u ws SWL-3 411589002 11/30/2016 Ag-108m -7.74E-Ol 9.36E-01 2.85E+OO u ws SWL-3 411589002 11/30/2016 Ag-llOm 5.47E-02 l.44E+OO 4.88E+OO u ws SWL-3 411589002 11/30/2016 Ba-140 -l.29E+Ol l.02E+Ol 2.82E+Ol u ws SWL-3 411589002 11/30/2016 Be-7 3.84E+OO l.09E+Ol 3.66E+Ol u ws SWL-3 411589002 11/30/2016 Ce-141 -9.63E+OO 3.77E+OO 7.0lE+OO u ws SWL-3 411589002 11/30/2016 Ce-144 -2.16E+OO 7.15E+OO 2.26E+Ol u ws SWL-3 411589002 11/30/2016 Co-57 6.95E-01 l.04E+OO 3.43E+OO u ws SWL-3 411589002 11/30/2016 Co-58 7.39E-01 l.OlE+OO 3.63E+OO u ws SWL-3 411589002 11/30/2016 Co-60 -2.84E-01 l.13E+OO 3.56E+OO u ws SWL-3 411589002 11/30/2016 Cr-51 2.93E+OO 1.34E+Ol 4.60E+Ol u ws SWL-3 411589002 11/30/2016 Cs-134 -9.75E-01 1.41E+OO 4.llE+OO u ws SWL-3 411589002 11/30/2016 Cs-137 5.93E-01 l.17E+OO 3.92E+OO u ws SWL-3 411589002 11/30/2016 Fe-59 -4.60E+OO 2.96E+OO 7.52E+OO u ws SWL-3 411589002 11/30/2016 I-131 l.69E+OO 5.16E+OO l.59E+Ol u ws SWL-3 411589002 11/30/2016 K-40 -2.35E+Ol l.66E+Ol 4.86E+Ol u ws SWL-3 411589002 11/30/2016 La-140 6.22E+OO 3.24E+OO l.21E+Ol u ws SWL-3 411589002 11/30/2016 Mn-54 5.82E-Ol 1.08E+OO 3.81E+OO u ws SWL-3 411589002 11/30/2016 Nb-95 -7.70E-OI 1.34E+OO 3.96E+OO u ws SWL-3 411589002 11/30/2016 Ru-103 1.79E-OI l.34E+OO 4.43E+OO u ws SWL-3 411589002 11/30/2016 Ru-106 7.12E+OO l.03E+OI 3.50E+Ol u ws SWL-3 411589002 11/30/2016 Sb-124 -6.00E+OO 3.30E+OO 5.69E+OO u ws SWL-3 411589002 11/30/2016 Sb-125 -2.77E+OO 3.0IE+OO 9.09E+OO u ws SWL-3 411589002 11/30/2016 Se-75 -1.03E+OO l.45E+OO 4.71E+OO u ws SWL-3 411589002 11/30/2016 Th-228 -3.78E+OO 2.51E+OO 7.46E+OO u ws SWL-3 411589002 11/30/2016 Zn-65 -3.42E+OO 2.69E+OO 5.75E+OO u ws SWL-3 411589002 11/30/2016 -Zr-95 l.38E+OO 2.12E+OO 7.15E+OO u D-162 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016* SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-2 413594002 12/31/2016 H-3 -7.00E+Ol 3.72E+02 l.23E+03 u ws SWL-3 413594004 12/31/2016 H-3 l.79E+02 3.82E+02 1.23E+03 u ws. SWL-2 413594001 12/31/2016 Ac-228 -1.16E+OI 4.93E+OO 8.92E+OO u ws *SWL-2 413594001 12/31/2016 Ag-108m -3.84E-01 5.31E-Ol 1.70E+OO u ws SWL-2 413594001 12/31/2016 Ag-llOm -7.26E-01 l.OOE+OO 2.97E+OO u ws SWL-2 413594001 12/31/2016 Ba-140 -1.97E+OO l.OSE+Ol 2.35E+OI u ws SWL-2 413594001 12/31/2016 Be-7 -3.23E+OO 6.79E+OO 2.20E+Ol u ws SWL-2 413594001 12/31/2016 Ce-141-1.15E+OO 1.55E+OO 5.07E+OO u ws SWL-2 413594001 12/31/2016 Ce-144 2.48E+OO 4.62E+OO l.52E+OI u WS SWL-2 413594001 12/31/2016 Co-57 4.ISE-01 5.92E-Ol l.96E+OO u ws SWL-2 413594001 12/31/2016 Co-58 7.72E-Ol 8.64E-Ol 2.46E+OO u WS SWL-2 413594001 12/31/2016 Co-60 -8.57E-Ol 6.28E-OI 1.28E+OO u ws SWL-2 413594001 12/31/2016 Cr-51 -l.72E+OO 8.43E+OO 2.86E+OI u ws SWL-2 413594001 12/31/2016 Cs-134 -6.54E-03 6.86E-01 2.20E+OO u WS SWL-2 413594001 12/31/2016 Cs-137 4.08E-02 5.99E-OI 1.96E+OO u ws SWL-2 413594001 12/31/2016 Fe-59 l.21E-01 1.58E+OO 5.33E+OO u ws SWL-2 413594001 12/31/2016 I-131 1.05E+OO 3.86E+OO 1.32E+Ol u ws SWL-2 413594001 12/31/2016 K-40 -l.84E+OI l.32E+OI 2.91E+OI u ws SWL-2 413594001 12/31/2016 La-140 -4.37E+OO 3.24E+OO 7.lOE+OO u ws SWL-2 413594001 12/31/2016 Mn-54 -l.95E+OO 1.22E+OO 2.23E+OO u ws SWL-2 413594001 12/31/2016 Nb-95 2.02E+OO 9.34E-01 2.81E+OO u ws SWL-2 413594001 12/31/2016 Ru-103 -1.lOE+OO 9.20E-01 2.76E+OO u ws SWL-2 413594001 12/31/2016 Ru-106 -2.76E+OO 6.05E+OO 1.92E+OI u ws SWL-2 413594001 12/31/2016 Sb-124 l.05E+OO 2.20E+OO 7.38E+OO u ws SWL-2 413594001 12/31/2016.

Sb-125 6.51E-02 1.77E+OO 5.97E+OO u ws SWL-2 413594001 12/31/2016 Se-75 6.42E-Ol 1.09E+OO 3.45E+OO u ws SWL-2 413594001 12/31/2016 Th-228 1.63E+OO 2.19E+OO 5.21E+OO u ws SWL-2 413594001 12/31/2016 Zn-65 -1.42E+OO l.36E+OO 4.03E+OO u ws SWL-2 413594001 12/31/2016 Zr-95 6.0IE-01 1.28E+OO 4.25E+OO u ws SWL-3 413594003 12/31/2016 Ac-228 4.83E+OO 4.87E+OO 1.74E+Ol u ws SWL-3 413594003 12/31/2016 Ag-108m l.lOE+OO 9.66E-Ol 3.37E+OO u ws SWL-3 413594003 12/31/2016 Ag-llOm 8.42E-02 l.35E+OO 4.42E+OO u ws SWL-3 413594003 12/31/2016 Ba-140 -2.31E+OO 1.19E+OI 3.94E+OI u ws SWL-3 413594003 12/31/2016 Be-7 1.44E+Ol 1.05E+Ol 3.67E+Ol u ws SWL-3 413594003 12/31/2016 Ce-141 -2.82E-Ol 2.89E+OO 8.55E+OO u ws SWL-3 413594003 12/31/2016 Ce-144 -3.26E-01 8.53E+OO 2.75E+Ol u ws SWL-3 413594003 12/31/2016 Co-57 2.16E-01 1.04E+OO 3.41E+OO u ws SWL-3 413594003 12/31/2016 Co-58 -5.49E-01 1.28E+OO 4.03E+OO u ws SWL-3 413594003 12/31/2016 Co-60 -4.92E-Ol 1.llE+OO 2.75E+OO u ws SWL-3 413594003 12/31/2016 Cr-51 1.40E+Ol l.38E+Ol 4.84E+Ol u ws SWL-3 413594003 12/31/2016 Cs-134 -4.45E-01 l.32E+OO 4.21E+OO u ws SWL-3 413594003 12/31/2016 Cs-137 -2.18E+OO l.13E+OO 2.70E+OO u ws SWL-3 413594003 12/31/2016 Fe-59 2.97E-OI 2.52E+OO 8.19E+OO u ws SWL-3 413594003 12/31/2016 I-131 3.44E+OO 5.58E+OO 1.96E+OI u ws SWL-3 413594003 12/31/2016 K-40 -3.07E+Ol 1.63E+Ol 4.21E+Ol u ws SWL-3 413594003 12/31/2016 La-140 -3.87E+OO 3.20E+OO 8.41E+OO u ws SWL-3 413594003 12/31/2016 Mn-54 6.47E-Ol 9.88E-Ol 3.39E+OO u ws. SWL-3 413594003 12/31/2016 Nb-95 -7.81E-OI l.35E+OO 3.65E+OO u ws

SWL-3 413594003 12/31/2016 Ru-103 -l.45E+OO 1.59E+OO 4.31E+OO u ws SWL-3 413594003 12/31/2016 Ru-106 4.64E+OO 8.91E+OO 3.07E+Ol u D-163 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 SAMPLE END CONC STD.DEV. MDC FLAGS TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) ws SWL-3 413594003 12/31/2016 Sb-124 -4.99E+OO 2.70E+OO 5.12E+OO u ws SWL-3 413594003 12/31/2016 Sb-125 2.44E+OO 3.15E+OO l.lOE+Ol u ws SWL-3 413594003 12/31/2016 Se-75 2.31E-02 l.92E+OO 5.34E+OO u ws SWL-3 413594003 12/31/2016 Th-228 l.92E+OO 2.86E+OO 7.13E+OO u ws SWL-3 413594003 12/31/2016 Zn-65 4.35E+OO 3.53E+OO 5.37E+OO u ws SWL-3 413594003 12/31/2016 Zr-95 l.77E+OO 2.0IE+OO 6.50E+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-164 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 APPENDIX E Pre-Operational Radiological Monitoring Program E-1 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 2016 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 0.17 pCi/m 3 from mid-1971 until mid-1973.

In June of 1973 and 1974, the People's Republic of China 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, Ru-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 thermoluminescent 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 7/9/74 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.

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 to fallout. E-2 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 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 2016 APPENDIX F NEI GROUNDWATER PROTECTION INITIATIVE F-1 Donald C. Cook Nuclear Plant Annual Radiological Environmental Operating Report 2016 Analysis of the Sample Data The Groundwater Protection Initiative (GPI) Sample Data for 2016 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.

There were no positively identified radionuclides from plant effluents detected in any of the GPI well samples, excepting low level tritium attributed to precipitation recapture.

The LLD value used for tritium counting of the samples varied between 9.42E-7 and 9.59 E-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 the maximum required LLD, 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 2016 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 2016 continue to reflect normal expectations and behaviors as they relate to recaptured tritium for the weather conditions observed in 2016. Two additional wells were installed late 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. Eight of ten samples from Well MW-28 had tritium values that exceeded the counting LLD value but were less than the maximum LLD value of 2.00E-6 uCi/mL. These trace levels of tritium activity are within expected normal values of tritium recapture.

The sample data indicates that no radioactive spills or unidentified leaks have occurred in 2016 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 2016 2016 GPI Sample Data Samples analyzed for tritium. Values noted are in microcuries per milliliter (uCi/mL) Lower Limit of Detection

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F-7 I*

ML17132A009

Contents

Text

Enclosure:

SUMMARY

2.0 INTRODUCTION

SUMMARY

4.4.3 Groundwater

SUMMARY

7.0 REFERENCES

SUMMARY

SUMMARY

2.0 INTRODUCTION

2.1 General

2.4 Pathways

2.5 Descriptions

2.5.2 Surface

2.5.4 Drinking

2.5.9 Broadleaf

SUMMARY

SUMMARY

4.2 Comparison

SUMMARY

7.0 REFERENCES

SUMMARY

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ML17132A009

Text

Enclosure:

SUMMARY

2.0 INTRODUCTION

SUMMARY

4.4.3 Groundwater

SUMMARY

7.0 REFERENCES

SUMMARY

SUMMARY

2.0 INTRODUCTION

2.1 General

2.4 Pathways

2.5 Descriptions

2.5.2 Surface

2.5.4 Drinking

2.5.9 Broadleaf

SUMMARY

SUMMARY

4.2 Comparison

SUMMARY

7.0 REFERENCES

SUMMARY

Navigation menu

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