Text

2014 Annual Radiological Environmental Operating Report
	ML15113B117
Person / Time
Site:	Clinton
Issue date:	04/16/2015
From:	Newcomer M; Exelon Generation Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	U-604210
	Download: ML15113B117 (141)
	v • d • e

Exeton Generation.

Clinton Power Station 8401 Power Road Clinton, IL 61727 U-60421 0 April 16, 2015 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 Clinton Power Station, Unit 1 Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Clinton Power Station 2014 Annual Radiological Environmental Operating Report Exelon Generating Company, LLC (Exelon), Clinton Power Station is submitting the 2014 Annual Radiological Environmental Operating Report. This report is submitted in accordance with Technical Specification requirement 5.6.2, "Annual Radiological Environmental Operating Report," and covers the period from January 1, 2014 through December 31, 2014.This reports provides the results of the Radiological Environmental Monitoring Program as specific in Section 5.0 and 7.1 of the Offsite Dose Calculation Manual.There are no regulatory commitments contained within this letter.Questions on this letter may be directed to Mr. Rick Bair, Chemistry Manager, at 217-937-3200.

Respectully, MAk M. l~wcomer Site Vice Preside*dra/cas cc: Regional Administrator

-NRC Region III NRC Senior Resident Inspector

-Clinton Power Station Office of Nuclear Facility Safety -Illinois Emergency Management Agency Page 1 of 140 Intentionally left blank Page 2 of 140 Docket No: 50-461 CLINTON POWER STATION Annual Radiological Environmental Operating Report 1 January Through 31 December 2014 Prepared By Teledyne Brown Engineering Environmental Services SExelonGeneration, Clinton Power Station Clinton, IL 61727 April 2015 Page 3 of 140 Intentionally left blank It Page 4 of 140 Table Of Contents I. Sum mary and Conclusions

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1 Il. Introduction

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3 A. Objectives of the REM P ..................................................................................

3 B. Im plementation of the Objectives

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3 III. Program Description

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4 A. Sam ple Collection

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4 B. Sam ple Analysis ..............................................................................................

6 C. Data Interpretation

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6 D. Program Exceptions

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8 E. Program Changes .........................................................................................

12 IV. Results and Discussion

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12 A. Aquatic Environment

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12 1. Surface W ater .....................................................................................

12 2. Drinking W ater ..................................................................................

13 3. W ell W ater .........................................................................................

13 4 .F is h ...................................................................................................

..14 5. Sediment ............................................................................................

14 B. Atmospheric Environment

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15 1. Airborne ..............................................................................................

15 a. Air Particulates

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15 b. Airborne Iodine ........................................................................

16 2. Terrestrial

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16 a .M ilk ........................................................................................

..16 b. Food Products ........................................................................

16 c. Grass ......................................................................................

17 C. Am bient Gam ma Radiation

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17 D. Land Use Survey ..........................................................................................

17 E. Errata Data ..................................................................................................

18 F. Summary of Results -Inter-laboratory Comparison Program ......................

18 V .R e fe re n ce s ...................................................................................................................

2 1 Page 5 of 140 Appendices Appendix A Tables Table A-1 Appendix B Tables Table B-1 Table B-2 Fiqures Figure B-1 Figure B-2 Figure B-3 Figure B-4 Appendix C Tables Table C-1.1 Table C-1.2 Table C-1.3 Table C-11.1 Radiological Environmental Monitoring Report Summary Radiological Environmental Monitoring Program Annual Summary for the Clinton Power Station, 2014 Location Designation, Distance & Direction, and Sample Collection

&Analytical Methods Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, Clinton Power Station, 2014 Radiological Environmental Monitoring Program.-

Summary of Sample Collection, Clinton Power Station, 2014 Environmental Sampling Locations Within One Mile of the Clinton Power Station, 2014 Environmental Sampling Locations Between One and Two Miles from the Clinton Power Station, 2014 Environmental Sampling Locations Between Two and Five Miles from the Clinton Power Station, 2014 Environmental Sampling Locations Greater Than Five Miles from the Clinton Power Station, 2014 Data Tables and Figures -Primary Laboratory Concentrations of 1-131 in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gross Beta in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2014.ii Page 6 of 140 Table C-11.2 Table C-11.3 Table C-11.4 Table C-111.1 Table C-I11.2 Table C-IV.1 Table C-V.1 Table C-VI.1 Table C-VI.2 Table C-VI.3 Table C-VII.1 Table C-VIII.1 Table C-VIII.2 Table C-IX.1 Table C-IX.2 Table C-X.1 Table C-X.2 Table C-X.3 Concentrations of Tritium in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of 1-131 in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Tritium in Well Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Ground Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Fish Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2014.Monthly and Yearly Mean Values of Gross Beta Concentrations (E-3 pCi/cu. meter) in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of 1-131 in Milk Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Milk Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Vegetation Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Grass Samples Collected in the Vicinity of Clinton Power Station, 2014.Quarterly DLR Results for Clinton Power Station, 2014.Mean Quarterly DLR Results for the Inner Ring, Outer Ring, Special Interest and Control Locations for Clinton Power Station, 2014.Summary of the Ambient Dosimetry Program for Clinton Power Station, 2014.iii Page 7 of 140 Fi-qures Figure C-1 Figure C-2 Appendix D Tables Table D-1 Table D-2 Table D-3 Appendix E Appendix F Mean Monthly Gross Beta Concentrations in Air Particulate Samples Collected in the Vicinity of CPS, 2014.Mean Quarterly Ambient Gamma Radiation Levels (DLR) in the Vicinity of CPS, 2014.Inter-Laboratory Comparison Program Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2014 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2014 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)Teledyne Brown Engineering, 2014 Errata Data Annual Radiological Groundwater Protection Program Report (ARGPPR)iv Page 8 of 140

1. Summary and Conclusions This report on the Radiological Environmental Monitoring Program (REMP)conducted for the Clinton Power Station (CPS) by Exelon Generation Company, LLC (Exelon) covers the period 1 January 2014 through 31 December 2014.During that time period, 1,569 analyses were performed on 1,462 samples. In assessing all the data gathered for this report and comparing these results with preoperational data, it was concluded that the operation of CPS had no adverse radiological impact on the environment.

There were zero (0) radioactive liquid releases from CPS during 2014.Releases of gaseous radioactive materials were accurately measured in plant effluents.

There were no gaseous effluent releases that approached the limits specified in the CPS Offsite Dose Calculation Manual (ODCM). The highest calculated offsite dose received by a member of the public due to the release of gaseous effluents from CPS was 9.41 E-02 or 0.0941 mRem.Surface, drinking, and well water samples were analyzed for concentrations of tritium and gamma emitting nuclides.

Drinking water samples were also analyzed for concentrations of gross beta and 1-131. Naturally occurring K-40 was detected at levels consistent with those detected in previous years. No fission or activation products were detected.

No tritium or gross beta activity was detected and the required lower limit of detection (LLD) was met.Fish and shoreline sediment samples were analyzed for concentrations of gamma emitting nuclides.

No fission or activation products were detected in fish or shoreline sediment samples.Air particulate samples were analyzed for concentrations of gross beta and gamma emitting nuclides.

Cosmogenic Be-7 and naturally occurring K-40 were detected at levels consistent with those detected in previous years. No fission or activation products were detected.High sensitivity 1-131 analyses were performed on weekly air samples. All results were less than the lower limit of detection for 1-131.Cow milk samples were analyzed for concentrations of 1-131 and gamma emitting nuclides.

All results were below the required LLDs for 1-131.Concentrations of naturally occurring K-40 were consistent with those detected in previous years. No fission or activation products were found.Food product samples were analyzed for concentrations of gamma emitting nuclides.

Concentrations of cosmogenically produced Be-7 and naturally occurring K-40 were consistent with those detected in previous years. No fission or activation products were detected.Grass samples were analyzed for concentrations of gamma emitting nuclides.Concentrations of cosmogenically produced Be-7 and naturally occurring K-40 were consistent with those detected in previous years. No fission or activation Page 9 of 140 products were detected.Environmental gamma radiation measurements were performed quarterly using Dosimeters of Legal Record (DLR). Levels detected were consistent with those observed in previous years.-2-Page 1Oof 140 II. Introduction The Clinton Power Station (CPS), consisting of one approximately 1,140 MW gross electrical power output boiling water reactor is located in Harp Township, DeWitt County, Illinois.

CPS is owned and operated by Exelon and became operational in 1987. Unit No. 1 went critical on 15 February 1987. The site encloses approximately 13,730 acres. This includes the 4,895 acre, man-made cooling lake and about 452 acres of property not owned by Exelon. The plant is situated on approximately 150 acres. The cooling water discharge flume -which discharges to the eastern arm of the lake -occupies an additional 130 acres.Although the nuclear reactor, supporting equipment and associated electrical generation and distribution equipment lie in Harp Township, portions of the aforementioned 13,730 acre plot reside within Wilson, Rutledge, DeWitt, Creek, Nixon and Santa Anna Townships.

A Radiological Environmental Monitoring Program (REMP) for CPS was initiated in 1987. The preoperational period for most media covers the periods May 1980 through 27 February 1987 and was summarized in a separate report. This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Landauer on samples collected during the period 1 January 2014 through 31 December 2014.A. Objectives of the REMP The objectives of the REMP are to: 1. Provide data on measurable levels of radiation and radioactive materials in the site environs.2. Evaluate the relationship between quantities of radioactive material released from the plant and resultant radiation doses to individuals from principal pathways of exposure.B. Implementation of the Objectives The implementation of the objectives is accomplished by: 1. Identifying significant exposure pathways.2. Establishing baseline radiological data of media within those pathways.3. Continuously monitoring those media before and during Station operation to assess Station radiological effects (if any) on man and the environment. Page 11 of 140 Ill. Program Description A. Sample Collection This section describes the general collection methods used by Environmental Inc. (Midwest Labs) to obtain environmental samples for the CPS REMP in 2014. Sample locations and descriptions can be found in Tables B-1 and B-2, and Figures B-1 through B-3, Appendix B. The sampling methods used by Environmental Inc. (Midwest Labs) are listed in Table B-2.Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of surface water, drinking water, well water, fish, and shoreline sediment.

Two gallon water samples were collected monthly from continuous samplers located at three surface water locations (CL-90, CL-91 and CL-99) and one drinking water location (CL-14). A monthly grab sample was obtained from one surface water location (CL-1 3).Quarterly samples were obtained from two well water locations (CL-7D and CL-12). All samples were collected in new unused plastic bottles, which were rinsed at least twice with source water prior to collection.

Fish samples comprising the flesh of largemouth bass, crappie, carp, bluegill, channel catfish, and white bass, the species most commonly harvested from the lakes by sporting fishermen, were collected semiannually at two locations, CL-19 and CL-105. CL-105 was the control location.

Shoreline sediment samples composed of recently deposited substrate were collected at two locations semiannually (CL-7B and CL- 05 (control)).

Atmospheric Environment The atmospheric environment was evaluated by performing radiological analyses on samples of air particulate, airborne iodine, milk, food produce and grass. Airborne iodine and particulate samples were collected and analyzed weekly at ten locations (CL-1, CL-2, CL-3, CL-4, CL-6, CL-7, CL-8, CL- 1, CL-i5 and CL-94). CL-1 1 was the control location.Airborne iodine and particulate samples were obtained at each location, using a vacuum pump with charcoal and glass fiber filters attached.

The pumps were run continuously and sampled air at the rate of approximately one cubic foot per minute. The filters were replaced weekly and sent to the laboratory for analysis.Milk samples were collected biweekly at one location (CL-1 16) from May through October and monthly from November through April to coincide with the grazing season. All samples were collected in new unused-4-Page 12 of 140 plastic bottles from the bulk tank at that location, preserved with sodium bisulfite and shipped promptly to the laboratory.

Food products were collected once a month from June through September at four locations (CL-114, CL-115, CL-117 and CL-118). The control location was CL- 14. Various broadleaf vegetable samples were collected and placed in new unused plastic bags, and sent to the laboratory for analysis.Grass samples were collected biweekly at four locations (CL-1, CL-2, CL-8 and CL- 16) from May through October. CL- 16 was the control location.

All samples were collected in new unused plastic bags and sent to the laboratory for analysis.Ambient Gamma Radiation Direct radiation measurements were made using DLRs. Each location consisted of 2 dosimeter sets. The DLRs were exchanged quarterly and sent to Landauer for analysis.

The DLR locations were placed around the CPS site as follows: An inner ring consisting of 16 locations (CL-1, CL-5, CL-22, CL-23, CL-24, CL-34, CL-35, CL-36, CL-42 CL-43, CL-44, CL-45, CL-46, CL-47, CL-48 and CL-63).An outer ring consisting of 16 locations (CL-51, CL-52, CL-53, CL-54, CL-55, CL-56, CL-57, CL-58, CL-60, CL-61, CL-76, CL-77, CL-78, CL-79, CL-80 and CL-81). CL-58MM was installed as part of a volunteer comparison study extending to approximately 5 miles from the site.A special interest set consisting of seven locations (CL-37, CL-41, CL-49, CL-64, CL65, CL-74 and CL-75) representing special interest areas.A supplemental set consisting of 14 locations (CL-2, CL-3, CL-4, CL-6, CL-7, CL-8, CL-15, CL-33, CL-84, CL-90, CL-91, CL-97, CL-99 and CL- 14).CL- 1 represents the control location for all environmental DLRs.The specific DLR locations were determined by the following criteria: 1. The presence of relatively dense population;

2. Site meteorological data taking into account distance and elevation for each of the sixteen-22 1/2 degree sectors around the site,-5-Page 13 of 140 where estimated annual dose from CPS, if any, would be most significant;

3. On hills free from local obstructions and within sight of the vents (where practical);

4. And near the closest dwelling to the HVAC and VG stacks in the prevailing downwind direction.

Each location has two DLRs in a vented PVC conduit located approximately three feet above ground level. The DLRs were exchanged quarterly and sent to Landauer for analysis.B. Sample Analysis This section describes the general analytical methodologies used by TBE and Environmental Inc. (Midwest Labs) to analyze the environmental samples for radioactivity for the CPS REMP in 2014. The analytical procedures used by the laboratories are listed in Table B-2.In order to achieve the stated objectives, the current program includes the following analyses: 1. Concentrations of beta emitters in drinking water and air particulates.

2. Concentrations of gamma emitters in surface, drinking and well water, air particulates, milk, fish, grass, sediment and vegetables.

3. Concentrations of tritium in surface, drinking and well water.4. Concentrations of 1-131 in air, milk, drinking water and surface water.5. Ambient gamma radiation levels at various on-site and off-site environs.C. Data Interpretation The radiological and direct radiation data collected prior to CPS becoming operational was used as a baseline with which these operational data were compared.

For the purpose of this report, CPS was considered operational at initial criticality.

In addition, data were compared to previous years' operational data for consistency and trending.

Several factors were important in the interpretation of the data:-6-Page 14 of 140

1. Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) was defined as the smallest concentration of radioactive material in a sample that would yield a net count (above background) that would be detected with only a 5% probability of falsely concluding that a blank observation represents a "real" signal. The LLD was intended as a before the fact estimate of a system (including instrumentation, procedure and sample type) and not as an after the fact criteria for the presence of activity.

All analyses were designed to achieve the required CPS detection capabilities for environmental sample analysis.2. Net Activity Calculation and Reporting of Results Net activity for a sample was calculated by subtracting background activity from the sample activity.

Since the REMP measures extremely small changes in radioactivity in the environment, background variations may result in sample activity being lower than the background activity resulting in a negative number. A minimum detectable concentration (MDC) was reported in all cases where positive activity was not detected.Gamma spectroscopy results for each type of sample were grouped as follows: For surface water, well water, fish, sediment, and milk 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-1 34, Cs-1 37, Ba-140, La-140 and Ce-144 were reported.For drinking water, grass, and vegetation 15 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-1 37, Ba-140, La-140 and Ce-1 44 were reported.For air particulate 11 nuclides, Be-7, K-40, Co-60, Nb-95, Zr-95, Ru-1 03, Ru-1 06, Cs-1 34, Cs-1 37, Ce-141 and Ce-1 44, were reported.The mean and standard deviation of the results were calculated.

The standard deviation represents the variability of measured results for different samples rather than single analysis uncertainty. Page 15 of 140 D. Program Exceptions The exceptions (Issue Reports, IRs) described below are those that are considered

'deviations' from the Radiological Environmental Monitoring Program as required by the Station's ODCM. By definition, 'deviations' are permitted as delineated within NUREG-0133, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants", October 1978, and within Radiological Assessment Branch Technical Position, Revision 1, November 1979, which states.... "Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability, malfunction of automatic sampling equipment and other legitimate reasons"....

The below section addresses the reporting requirements found within Section 7.1 of the Station's ODCM.Exceptions/Anomalies January 01, 2014, IR 1608889 During the weekly walkdown of liquid composite samplers it was discovered that sample collection of non-ODCM liquid compositor location CL-99 was not possible due to freezing of the North Fork Creek. This sampling unavailability is experienced during periods of sub-freezing temperatures due to the small body of water being sampled. Sample collection will be restored when the creek has thawed sufficiently.

January 08, 2014, IR 1608894 During a walkdown of liquid composite samplers it was discovered that sample collection of non-ODCM liquid compositor location CL-99 was not possible due to freezing of the North Fork Creek.This sampling unavailability is experienced during periods of sub-freezing temperatures due to the small body of water being sampled. Sample collection will be restored when the creek has thawed sufficiently.

May 07, 2014, IR 1657101 REMP program owner identified that the drinking water compositor CL-14 was not collecting composite samples as there was no flow through the compositor.

The sampling line was flushed and flow was reestablished. Page 16 of 140 May 21, 2014, IR 1663766 While conducting a weekly compositor check for REMP location CL-91 it was discovered that the compositor was without power. A grab sample was obtained for the week; however the May composite sample will not meet the definition of a composite sample [sample aliquots shall be collected at time intervals that are very short (e.g., hourly) relative to the composite period (e.g., monthly) in order to assure obtaining a representative sample].Power was restored to the compositor and was functioning properly when the vendor left the site.August 27, 2014, IR 02473280 On Wednesday, 08/27/14 while performing the Vegetation Collections per ODCM Table 5.1-1.4.c, Sample Garden at CL-114 did not meet the minimum weight collection criteria for cabbage and was augmented with broady leaf vegetation.

September 24, 2014. IR 2386276 On Wednesday, 09/24/14 while performing Surface Water Collections, Water Compositor CL-91 was found not operating consistently, by not collecting a composite sample per ODCM Table 5.1-1.g Table Notation and Table 5.1-1.3.a.

Although a replacement water compositor was available and replaced with the inoperable unit, a grab sample was also obtained to augment the weekly sample collection, meeting the monthly composite minimum volume.On Wednesday, 09/24/14 while performing the Vegetation Collections per ODCM Table 5.1-1.4.c, Sample Garden at CL- 14 did not meet the minimum weight collection criteria for cabbage and was augmented with broady leaf vegetation.

On Wednesday, 09/24/14 while performing the Vegetation Collections per ODCM Table 5.1-1.4.c, Sample Garden at CL- 15 did not meet the minimum weight collection criteria for both cabbage and kale and was augmented with broady leaf vegetation.

On Wednesday, 09/24/14 while performing the Vegetation Collections per ODCM Table 5.1-1.4.c, Sample Garden at CL-1 17 did not meet the minimum weight collection criteria for cabbage and was augmented with broady leaf vegetation.

The vegetation sample collection only occurs during the harvest season of June,-9-Page 17 of 140 July, August and September.

November 5, 2014. IR 2407027 At 0030 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months on 11/05/14, Clinton lost the 12 kV 302 Loop that impacted ODCM Water Compositor CL-90 at 0.4 miles. Because the normally scheduled weekly surveillance is being performed today every Wednesday, the six hour and 28 minute gap in sampling meets the definition of exceptions pursuant to NUREG 0133 for the 'malfunctioning of sampling equipment' and other'legitimate reasons'.

Further, the gap identified, will not impact the detection capability of meeting the lower limits of detection LLD] of the sample. This will however be reported in the Annual Report pursuant to Tech Spec 5.6.3.With a portable generator, ODCM Water Compositor CL-90 was restored to operable at 0717 hours0.0083 days 0.199 hours 0.00119 weeks 2.728185e-4 months . The sampling frequency is hourly intervals, feeding into a monthly composite.

Because potentially, seven hourly intervals were missed, this meets the definition of exceptions pursuant to NUREG 0133 for the'malfunctioning of sampling equipment' and other 'legitimate reasons'.November 14, 2014. IR 2412724 At 0215 hours0.00249 days 0.0597 hours 3.554894e-4 weeks 8.18075e-5 months on 11/14/14 while executing WO 1490322-35 and CPS No. 3409.01, that completed the shutdown of the Service Building per eSOMS log entry made at 0620 hours0.00718 days 0.172 hours 0.00103 weeks 2.3591e-4 months on 11/14/14, Chemistry secured CL-14, ODCM Drinking Water Compositor.

At 1055 hours0.0122 days 0.293 hours 0.00174 weeks 4.014275e-4 months on 11/14/14, with power now restored to the Service Building, Chemistry returned to service, CL-14, ODCM Drinking Water Compositor back to service.November 26, 2014 IR 02473354 During the weekly environmental monitoring surveillance for airborne iodine/particulate performed on 11/26/14, the sample collector found the indicated air sampling run time at ODCM station CL-3 to be low. In the absence of any surrounding power outages, it was determined that the sample timer was defective and was replaced.

This IR was documented to address the LLDs were not obtainable due to the indicated low run time of the sample and insufficient sample volume collected. Page 18 of 140 Throughout 2014, the following IRs were generated to note minor gaps in the sample collection run times that although were not continuous, the sample collection volumes collected were more than sufficient to meet the required ODCM LLD reporting criteria.

The expectation is to document these exceptions into the Corrective Action Program for trending to determine timer failures or external utility support for seeking reliable power delivery.IR 1608616 IR 1614260 IR 1620397 IR 1623479 IR 1626538 IR 1629591 IR 1632572 IR 1648359 IR 1653938 IR 1678628 Missed Samples February 19, 2014, IR 1623479 During a walkdown of liquid composite samplers it was found that sample collection of non-ODCM liquid compositor location CL-99 was not possible due to freezing of the North Fork Creek. This sampling unavailability is experienced during periods of sub-freezing temperatures due to the small body of water being sampled. Sample collection will be restored when the creek has thawed sufficiently.

February 26, 2014, IR 1626538 During a walkdown of liquid composite samplers, it was discovered that sample collection of non-ODCM liquid compositor location CL-99 was not possible due to freezing of the North Fork Creek. This sampling unavailability is experienced during periods of sub-freezing temperatures due to the small body of water being sampled. Sample collection was restored when the creek had thawed sufficiently.

September 25, 2014, IR 02463928 The quarterly DLR surveillance was completed with dosimeters at all DLR locations collected.

This was verified by the vendor sample-11 -Page 19 of 140 collector and the Program Manager upon completion prior to shipping to the dosimetry vendor Landauer.

Landauer stated they did not perform the analysis for location CL-52, due to both the primary and the secondary dosimeter being absent from the package. There was no radiological impact to the environment as a result of the missing dosimeters when comparing the adjoining monitored meteorological sectors and their results and when further coupled with a comparison of the control station.Program exceptions were reviewed to understand the causes of the exception and to return to ODCM sample compliance before the next sampling frequency period.The overall sample recovery rate indicates that the appropriate procedures and equipment are in place to assure reliable program implementation.

E. Program Changes The corporate procedure CY-AA-170-1000 Radiological Environmental Monitoring Program and Meteorological Program Implementation was revised. The changes made were non-impactful and included additional guidance for clarification regarding REMP air sampling equipment.

IV. Results and Discussion A. Aquatic Environment

1. Surface Water Samples were taken hourly from a continuous compositor at three locations (CL-90, CL-91 and CL-99) on a monthly schedule and grab samples were taken monthly from one location (CL-13). The following analyses were performed.

Iodine-131 Monthly samples from location CL-90 were analyzed for 1-131 activity (Table C-1.1, Appendix C). No 1-131 was detected in any samples and the required LLD was met.Tritium Monthly samples from all locations were composited quarterly and-12-Page 20 of 140 analyzed for tritium activity (Table C-1.2, Appendix C). No tritium was detected in any samples and the required LLD was met.Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-1.3, Appendix C). Naturally occurring K-40 was found in six of 47 samples. The concentration ranged from 27 to 93 pCi/L. No other nuclides were detected and all required LLDs were met.2. Drinking Water Monthly samples were collected from a continuous compositor at one location (CL-14). The following analyses were performed:

Gross Beta Monthly samples were analyzed for concentrations of gross beta (Tables C-11.1, Appendix C). No Gross beta was detected in any of the samples.Tritium Monthly samples were composited quarterly and analyzed for tritium activity (Table C-11.2, Appendix C). No tritium was detected in any samples and the required LLD was met.Iodine-131 Monthly samples from location CL-14 were analyzed for 1-131 activity (Table C-11.3, Appendix C). No 1-131 was detected in any samples and the required LLD was met.Gamma Spectrometry Monthly samples were analyzed for gamma emitting nuclides (Table C-11.4, Appendix C). No nuclides were detected and all required LLDs were met.3. Well Water Quarterly grab samples were collected at two locations (CL-7D and CL-12, consisting of CL-12R [a raw water sample from this well]and CL-12T [same well water, but after treatment and available for-13-Page 21 of 140 consumption]).

The following analyses were performed:

Tritium Samples from all locations were analyzed for tritium activity (Table C-111.1, Appendix C). No tritium was detected in any samples and the required LLD was met.Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-111.2, Appendix C). Naturally occurring K-40 was found in one of four samples for location CL-7D at a concentration of 30 pCi/I. No other nuclides were detected in any of the samples and all required LLDs were met.4. Fish Fish samples comprised of carp, largemouth bass, bluegill, crappie, channel catfish, and white bass were collected at two locations (CL-19 and CL- 05) semiannually.

The following analysis was performed:

Gamma Spectrometry The edible portion of fish samples from both locations was analyzed for gamma emitting nuclides (Table C-IV.1, Appendix C).Naturally occurring K-40 was found at both locations.

No fission or activation products were found. No other nuclides were detected and the required LLDs were met.5. Shoreline Sediment Aquatic shoreline sediment samples were collected at CL-7B and CL- 05 semiannually.

The following analysis was performed:

Gamma Spectrometry Shoreline sediment samples were analyzed for gamma emitting nuclides (Table C-V.1, Appendix C). Naturally occurring K-40 was detected in all samples. No fission or activation products were found. No other nuclides were detected and the required LLDs were met.-14-Page 22 of 140 B. Atmospheric Environment Airborne a. Air Particulates Continuous air particulate samples were collected from 10 locations on a weekly basis. The 10 locations were separated into three groups: Group I represents locations within one mile of the CPS site boundary (CL-2, CL-3, CL-4, CL-6, CL-15 and CL-94); Group II represents the locations at an intermediate distance within one to five miles of CPS (CL-1, CL-7 and CL-8); and Group III represents the control location greater than five miles from CPS (CL- 1). The following analyses were performed:

Gross Beta Weekly samples were analyzed for concentrations of beta emitters (Table C-VI.1 and C-VI.2 and Figure C-1, Appendix C).Detectable gross beta activity was observed at all locations.

Comparison of results among the three groups aid in determining the effects, if any, resulting from the operation of CPS. The results from the On-Site locations (Group I)ranged from 7 to 64 E-3 pCi/m 3 with a mean of 18 E-3 pCi/m 3.The results from the Intermediate Distance location (Group II) ranged from 7 to 41 E-3 pCi/mi 3 with a mean of 18 E-3 pCi/m 3.The results from the Control locations (Group Ill) ranged from 8 to 32 E-3 pCi/m 3 with a mean of 19 E-3 pCi/m 3.Comparison of the 2014 air particulate data with previous years data indicate no effects from the operation of CPS (Figure C-5, Appendix C). In addition, a comparison of the weekly mean values for 2014 indicate no notable differences among the three groups.Gamma Spectrometry Weekly samples were composited quarterly and analyzed for gamma emitting nuclides (Table C-VI.3, Appendix C).Naturally occurring cosmogenically produced Be-7 due to cosmic ray activity was detected in 38 of 40 samples. No other nuclides were detected and all required LLDs were met.-15-Page 23 of 140

b. Airborne Iodine Continuous air samples were collected from 10 locations (CL-1, CL-2, CL-3, CL-4, CL-6, CL-7, CL-8, CL-11, CL-15 and CL-94) and analyzed weekly for 1-131 (Table C-VII.1, Appendix C). All results were less than the MDC and the required LLD was met.2. Terrestrial

a. Milk Samples were collected from CL-1 16 biweekly May through October and monthly November through April to coincide with the grazing season. The following analyses were performed:

Iodine-1 31 Milk samples were analyzed for concentrations of 1-131 (Table C-VIII.I, Appendix C). lodine-131 was not detected in any of the samples. The required LLD was met.Gamma Spectrometry Each milk sample was analyzed for concentrations of gamma emitting nuclides (Table C-VIII.2, Appendix C).Naturally occurring K-40 activity was found in all samples.No other nuclides were detected and all required LLDs were met.b. Food Products Broadleaf vegetation samples were collected from four locations (CL-114, CL-115, CL-117 and CL-118) monthly June through September to coincide with the harvest season. The following analysis was performed:

Gamma Spectrometry Each food product sample was analyzed for concentrations of gamma emitting nuclides (Table C-IX.I, Appendix C).Cosmogenically produced Be-7 due to cosmic ray activity was detected in most samples. Naturally occurring K-40-16-Page 24 of 140 activity was found in all samples. No other nuclides were detected and all required LLDs were met.c. Grass Samples were collected from four locations (CL-1, CL-2, CL-8, and CL-1 16) biweekly May through October. The following analysis was performed:

Gamma Spectrometry Each grass sample was analyzed for concentrations of gamma emitting nuclides (Table C-IX.2, Appendix C).Cosmogenically produced Be-7 due to cosmic ray activity and naturally occurring K-40 were in all samples. No other nuclides were detected and all required LLDs were met.C. Ambient Gamma Radiation Ambient gamma radiation levels were measured utilizing DLRs. Fifty-four DLR locations were established around the site. Results of DLR measurements are listed in Tables C-X.1 to C-X.3, Appendix C.A total of 215 OSLD measurements were made in 2014. The average dose from the inner ring was 22.6 mRem/quarter.

The average dose from the outer ring was 22.7 mRem/quarter.

The average dose from the special interest group was 22.5 mRem/quarter.

The average dose from the supplemental group was 21.2 mRem/quarter.

The quarterly measurements ranged from 17.3 to 26.8 mRem/quarter.

The inner ring and outer ring measurements compared well to the Control Station, CL-1 1, which ranged from 20.6 mRem/quarter to 21.5 mRem/quarter with an average measurement of 21.0 mRem/quarter.

A comparison of the Inner Ring and Outer Ring data to the Control Location data indicate that the ambient gamma radiation levels from all the locations were comparable.

The historical ambient gamma radiation data from the control location were plotted along with similar data from the Inner and Outer Ring Locations (Figure C-2, Appendix C).D. Land Use Survey A Land Use Survey conducted during the July through October 2014 growing season around the Clinton Power Station (CPS) was performed by Environmental Inc. (Midwest Labs) for Exelon to comply with Clinton's-17-Page 25 of 140 Offsite Dose Calculation Manual, section 5.2. The purpose of the survey was to document the nearest resident, milk producing animal and garden of greater than 538 m2 in each of the sixteen 22 /2 degree sectors around the site. The distance and direction of all locations from the CPS Station HVAC vent stack were positioned using Global Positioning System (GPS)technology.

There were no changes required to the CPS REMP as a result of this survey. The results of this survey are summarized below.Distance in Kilometers from the CPS Station HVAC Vent Stack Sector Residence Garden Milk Animal (km) (km) (km)1 N 1.5 1.5 1.5 2 NNE 1.5 4.8 3.8 3 NE 2.1 >8 >8 4 ENE 2.9 2.9 6.6 5 E 1.7 1.7 > 8 6 ESE 5.1 5.3 > 8 7 SE 4.4 >8 >8 8 SSE 2.9 > 8 > 8 9 S 4.8 6.6 6.6 10 SSW 4.7 > 8 5.5 11 SW 1.2 5.9 > 8 12 WSW 3.6 3.7 5.5 13 W 2.0 3.2 > 8 14 WNW 2.6 2.6 > 8 15 NW 2.7 4.5 > 8 16 NNW 2.1 2.1 2.1 E. Errata Data During the REMP NRC Inspection in 2014, it was observed by the Inspector and captured within IR #01685370, that the term TLD (Thermoluminescent Dosimeter) had been used throughout the 2013 AREOR, describing the dosimeter of legal record (DLR) as opposed to the OSLD (Optically Stimulated Luminescent Dosimeter) that is currently being used to obtain direct radiation exposure from the environment as required of the REMP program. In the current 2014 report, TLD has been replaced by DLR.F. Summary of Results -Inter-Laboratory Comparison Program The primary laboratory analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation and water matrices for 19 analytes (Appendix D). The PE samples, supplied by Analytics Inc., Environmental Resource Associates (ERA) and DOE's Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the-18-Page 26 of 140 following pre-set acceptance criteria: 1. Analytics Evaluation Criteria Analytics' evaluation report provides a ratio of TBE's result and Analytics' known value. Since flag values are not assigned by Analytics, TBE-ES evaluates the reported ratios based on internal QC requirements, which are based on the DOE MAPEP criteria.2. ERA Evaluation Criteria ERA's evaluation report provides an acceptance range for control and warning limits with associated flag values. ERA's acceptance limits are established per the USEPA, NELAC, state specific PT program requirements or ERA's SOP for the Generation of Performance Acceptance Limits, as applicable.

The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.3. DOE Evaluation Criteria MAPEP's evaluation report provides an acceptance range with associated flag values.The MAPEP defines three levels of performance:

Acceptable (flag = "A"), Acceptable with Warning (flag = "W"), and Not Acceptable (flag = "N"). Performance is considered acceptable when a mean result for the specified analyte is +/- 20% of the reference value. Performance is acceptable with warning when a mean result falls in the range from +/- 20% to +/- 30% of the reference value (i.e., 20% < bias < 30%). If the bias is greater than 30%, the results are deemed not acceptable.

In reviewing our environmental inter-laboratory crosscheck programs, we identified

1) duplication of efforts on some matrices and isotopes and 2)that we are performing crosscheck samples on some matrices and isotopes that we do not perform for clients. Since the DOE MAPEP is designed to evaluate the ability of analytical facilities to correctly analyze for radiological constituents representative of those at DOE sites, the needed changes were made to the MAPEP program. Therefore, the following isotopes were removed from the MAPEP program: Soil -gamma -will be provided by Analytics twice per year, starting in 2015. For 2014, one soil gamma is provided by MAPEP, the 2nd soil gamma is provided by Analytics. Page 27 of 140 AP -gamma -is currently provided by Analytics.

Water -gamma, H-3, Sr-90, uranium, gross alpha and gross beta currently provided by ERA.MAPEP evaluates non-reported (NR) analyses as failed if they were reported in the previous series.For the TBE laboratory, 163 out of 169 analyses performed met the specified acceptance criteria.

Six analyses (Ni-63, K-40 and 1-131 in water, and two Sr-90s and one Gross Alpha in AP samples) did not meet the specified acceptance criteria for the following reasons: 1. Teledyne Brown Engineering's MAPEP March 2014 Ni-63 in water result of 32.7 +/- 1.69 Bq/L was overlooked when reporting the data but would have passed the acceptance range of 23.9 -44.2 Bq/L.NCR 14-04 2. Teledyne Brown Engineering's MAPEP March 2014 K-40 in water result of 1.63 +/- 2.49 Bq/L was overlooked when reporting the data but would have passed the false positive test. NCR 14-04 3. Teledyne Brown Engineering's ERA November 2014 1-131 in water result of 15.8 pCi/L was lower than the known value of 20.3 pCi/L, falling below the lower acceptance limit of 16.8. The result was evaluated as failed with a found to known ratio of 0.778. No cause could be found for the slightly low result. All previous ERA 1-131 evaluations since 2004 have been acceptable.

NCR 14-08 4. Teledyne Brown Engineering's MAPEP March 2014 Sr-90 in AP result of 0.822 Bq/sample was lower than the known value of 1.18 Bq/sample, falling below the lower acceptance limit of 0.83 Bq/sample.

The rerun result was still low, but fell within the lower acceptance range of 0.836 Bq/sample.

The rerun result was statistically the same number as the original result. No cause could be found for the slightly low results. NCR 14-04 5. Teledyne Brown Engineering's MAPEP September 2014 Sr-90 in AP result of 0.310 Bq/sample was lower than the known value of 0.703 Bq/sample.

The gravimetric yield of 117% was very high (we normally see yields of 60% to 70%) and could account for the low activity.

NCR 14-09 6. Teledyne Brown Engineering's MAPEP September 2014 Gr-Alpha in AP result of 0.153 Bq/sample was lower than the known value of 0.53 Bq/sample.

The AP sample was counted on the wrong side.The AP was flipped over and recounted with acceptable results.NCR 14-09-20 -Page 28 of 140 V. References

1. American National Standards Institute, Inc., "Performance, Testing and Procedural Specifications for Thermoluminescent Dosimetry," ANSI N545-1975.2. Code of Federal Regulations, Title 10, Part 20 (Nuclear Regulatory Commission).

3. CPS 2014 Annual Radioactive Effluent Release Report.4. "Environmental Radioactivity," M. Eisenbud, 1987 (E187).5. "Natural Radon Exposure in the United States," Donald T. Oakley, U.S.Environmental Protection Agency. ORP/SID 72-1, June 1972.6. Federal Radiation Council Report No. 1, "Background Material for the Development of Radiation Protection Standards," May 13, 1960.7. International Commission on Radiation Protection, Publication 2, "Report of Committee II on Permissible Dose for Internal Radiation," (1959) with 1962 Supplement issued in ICRP Publication 6; Publication 9,"Recommendations on Radiation Exposure," (1965); ICRP Publication 7 (1965), amplifying specific recommendations of Publication 26 (1977).8. International Commission on Radiation Protection, Publication No. 39 (1984), "Principles of Limiting Exposure to the Public to Natural Sources of Radiation".

9. "Radioactivity in the Environment:

Sources, Distribution and Surveillance," Ronald L. Kathren, 1984.10. National Council on Radiation Protection and Measurements, Report No.22, "Maximum Permissible Body Burdens and Maximum Permissible Concentrations of Radionuclides in Air and Water for Occupational Exposure," (Published as National Bureau of Standards Handbook 69, issued June 1959, superseding Handbook 52).11. National Council on Radiation Protection and Measurements, Report No.39, "Basic Radiation Protection Criteria," January 1971.12. National Council on Radiation Protection and Measurements, Report No.44, "Krypton-85 in the Atmosphere

-Accumulation, Biological Significance, and Control Technology," July 1975.13. National Council on Radiation Protection and Measurements, Report No.91, "Recommendations on Limits for Exposure to Ionizing Radiation," June 1987.14. National Council on Radiation Protection and Measurements, Report No.93, "Ionizing Radiation Exposure of the Population of the United States," September 1987.-21 -Page 29 of 140

15. National Research Council, 1990, Committee on Biological Effects of Ionizing Radiation (BEIR V), Board on Radiation Effects Research on Life Sciences, "The Effects of Exposure to Low Levels of Ionizing Radiation".

16. United States Nuclear Regulatory Commission, Regulatory Guide 4.1,"Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants," Revision 1, April 1975.17. United States Nuclear Regulatory Commission, Regulatory Guide 4.13,"Performance, Testing and Procedural Specifications for Thermoluminescence Dosimetry:

Environmental Applications, "Revision 1, July 1977.18. United States Nuclear Regulatory Commission, Regulatory Guide 1.109,"Calculation of Annual Dose to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 1 OCFR Part 50, Appendix I, "Revision 1, October 1977.19. United States Nuclear Regulatory Commission Branch Technical Position,"An Acceptable Radiological Environmental Monitoring Program," Revision 1, November 1979.20. United States Nuclear Regulatory Commission, Regulatory Guide 4.15,"Quality Assurance for Radiological Monitoring Programs (Norm Operations)

-Effluent Streams and the Environment," Revision 1, February 1979.21. Technical Specifications, Clinton Power Station, Unit No. 1, Docket No.50-461, Office of Nuclear Reactor Regulation, 1986. Facility Operating License Number NPF-62.22. Clinton Power Station, Updated Safety Analysis Report.23. Clinton Power Station, Unit 1, Off-Site Dose Calculation Manual.-22 -Page 30 of 140 APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT

SUMMARY

Page 31 of 140 Intentionally left blank Page 32 of 140 TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SURFACE WATER (PCI/LITER) 1-131 H-3 12 16 47<LLD NA 0 2000 <LLD<LLD GAMMA BE-7 K-40 MN-54 CO-58 FE-59 CO-60 ZN-65 NA <LLD NA 50 (3/24)(27/80)15 <LLD 15 <LLD 30 <LLD 15 <LLD 30 <LLD<LLD 68 (3/23)(52/93)<LLD<LLD<LLD<LLD 93 (1/11)CL-99 CONTROL NORTH FORK ACCESS 3.5 MILES NNE OF SITE 0 0 00 0 0<LLD 0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SURFACE WATER (PCI[LITER)

NB-95 ZR-95 CS-134 CS-137 BA-140 LA-140 CE-144 15 <LLD 30 <LLD 15 <LLD 18 <LLD 60 <LLD 15 <LLD NA <LLD 4 <LLD 2000 <LLD I <LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD 0 0 0 0 0 0 0 0 0 0 DRINKING WATER (PCI/LITER)

CD C 0 GR-B H-3 1-131 12 4 NA NA NA 12 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS DRINKING WATER (PCI/LITER)

GAMMA BE-7 12 K-40 MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 CS-134 NA <LLD NA <LLD 15 <LLD 15 <LLD 30 <LLD 15 <LLD 30 <LLD 15 <LLD 30 <LLD 15 <LLD NA NA NA NA NA NA NA NA NA NA 0 0 0 0 0 0 0 0 0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS DRINKING WATER (PCI/LITER)

CS-137 BA-140 LA-140 CE-144 WELL WATER (PCI/LITER)

H-3 12 12 18 <LLD 60 <LLD 15 <LLD NA <LLD 2000 <LLD NA <LLD NA 30 (1/12)15 <LLD 15 <LLD 30 <LLD NA NA NA NA NA 0 0 0 0 0 GAMMA BE-7 K-40-w rio 0 0 MN-54 CO-58 FE-59 NA NA NA NA NA 30 (1/4)CL-7D INDICATOR MASCOUTIN RECREATION AREA 2.3 MILES ESE OF SITE 0 0 0 0 0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS WELL WATER (PCI/LITER)

CO-60 ZN-65 NB-95 ZR-95 CS-134 CS-137 BA- 140 LA-140 CE-144 15 <LLD 30 <LLD 15 <LLD 30 <LLD 15 <LLD 18 <LLD 60 <LLD 15 <LLD NA <LLD NA NA NA NA NA NA NA NA NA 0 0 0 0 0 0 tie FISH (PCI/KG WET)GAMM BE-7 IA 16 NA <LLD <LLD THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)0 TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FISH (PCI/KG WET)K-40 NA 3586 (8/8)(2218/4885) 3447 (8/8)(3073/4029) 3586 (8/8)(2218/4885)

CL-I 9 INDICATOR END OF DISCHARGE FLUME 3.4 MILES E OF SITE MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 CS-134 CS-137 130 <LLD 130 <LLD 260 <LLD 130 <LLD 260 <LLD NA <LLD NA <LLD 130 <LLD 150 <LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD 0 0 0 0 0 0 0 0 0 0"o C)0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FISH (PCI/KG WET)SEDIMENT (PCI/KG DRY)BA-140 LA-140 CE-144 GAMMA BE-7 NA <LLD NA <LLD NA <LLD NA <LLD<LLD<LLD<LLD 0 0 0 4<LLD K-40 MN-54 CO-58 FE-59 CO-60 NA 7644 (2/2)(7231/8056)

NA <LLD NA <LLD 8574 (2/2)(7515/9633) 8574 (2/2)(7515/9633)

CL-105 CONTROL LAKE SHELBYVILLE 50 MILES S OF SITE<LLD<LLD<LLD<LLD 0 0 0 0 0 0 Oro n w NA <LLD NA <LLD THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SEDIMENT (PCI/KG DRY)ZN-65 NB-95 ZR-95 CS-134 00 CS-137 BA- 140 LA- 140 CE-144 NA <LLD NA <LLD NA <LLD 150 <LLD 180 <LLD NA <LLD NA <LLD NA <LLD 10 18 (468/468)(7/64)<LLD<LLD<LLD<LLD 0 0<LLD<LLD<LLD<LLD 19 (52/52)(8/32)0 0 IO AIR PARTICULATE (E-3 PCI/CU.METER)

GR-B 520 19 (52/52)(10/64)CL-3 INDICATOR CLINTON'S SECONDARY ACCESS ROAD 0.7 MILES NE OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS AIR PARTICULATE (E-3 PCI/CU. METER)GAMMA BE-7 40 K-40 CO-60 NB-95 ZR-95 RU-103 RU-106 CS-134 CS-137 NA 63 (34/36)(37/93)NA 23 (1/36)NA <LLD NA <LLD NA <LLD NA <LLD NA <LLD 50 <LLD 60 <LLD 57 (4/4)(48/64)29 (1/4)<LLD<LLD<LLD<LLD<LLD<LLD<LLD 67 (4/4)(49/93)CL-8 INDICATOR DEWITT CEMETERY 2.2 MILES E OF SITE 29 (1/4)CL-I 1 CONTROL ILLINOIS POWER SUBSTATION 16 MILES S OF SITE 0 0 0 0 0 0 0THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS AIR PARTICULATE (E-3 PCI/CU.METER)

CE-141 CE-144 GAMMA 1-131 NA <LLD NA <LLD<LLD<LLD 0 0 AIR IODINE (E-3 PCI/CU.METER)

MILK (PCI/LITER) 520 1-131 19 19 GAMMA BE-7 70 <LLD I NA NA NA NA NA NA NA NA NA NA NA<LLD<LLD 0 0<LLD K-40 1200 (19/19)(1034/1294) 1200 (19/19)(1034/1294)

CL-I 16 CONTROL PASTURE IN RURAL KENNEY 14 MILES WSW OF SITE MN-54 CO-58 FE-59<LLD<LLD<LLD 0 0 0 0 0THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS MILK (PCI/LITER)

CO-60 ZN-65 NB-95 ZR-95 CS-134 CS-137 BA-140 LA-140 CE-144 NA NA NA NA NA NA NA NA 15 NA 18 NA 60 NA 15 NA NA NA<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD 0 0 0 0 0 0 0 0 CL 07THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS VEGETATION (PCI/KG WET)GAMMA BE-7 48 NA 547 (30/36)(156/1656)

NA 5144 (36/36)(2725/8897) 464 (10/12)(205/922)5415 (12/12)(3581/8465) 696 (9/12)(318/1656) 5415 (12/12)(3581/8465)

CL-I 15 INDICATOR SITE'S SECONDARY ACCESS ROAD 0.7 MILES NE OF SITE CL-I 14 CONTROL CISCO 12.5 MILES SSE OF SITE K-40 I'MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 NA <LLD NA <LLD NA <LLD NA <LLD NA <LLD NA <LLD NA <LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD 0 0 0 0 0 0 0 0 0 (10 C 0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS VEGETATION (PCI/KG WET)1-131 CS-134 CS-137 BA-140 LA-140 CE-144 GAMMA BE-7 60 <LLD 60 <LLD 80 <LLD NA <LLD NA <LLD NA <LLD<LLD<LLD<LLD<LLD<LLD<LLD 0 0 0 0 0 GRASS (PCI/KG WET)52 O 0T K-40 NA 1956 (39/39)(371/5198)

NA 5566 (39/39)(2380/8596)

NA <LLD 1671 (13/13)(500/4173) 5330 (13/13)(4129/6425) 2545 (13/13)(518/5198) 6409 (13/13)(5212/8596)

CL-02 INDICATOR CLINTON'S MAIN ACCESS ROAD 0.7 MILES NNE OF SITE CL-08 INDICATOR DEWITT CEMETERY 2.2 MILES E OF SITE MN-54<LLD 0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBEROF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GRASS (PCI/KG WET)CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 NA <LLD NA <LLD NA <LLD NA <LLD NA <LLD NA <LLD 60 <LLD 60 <LLD 80 <LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD 0 0 0 1-131 IV 0o CS-134 CS-137 0 0 0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2014 NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2014 LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD: INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GRASS (PCI/KG WET)BA-140 LA-140 CE-144 NA <LLD NA <LLD NA <LLD NA 22.3 (211/211)(17.3/26.8)

<LLD<LLD<LLD 0 0 0 0 DIRECT RADIATION (MILLIREM/QTR.)

DLR-QUARTERLY 215 21.0 (4/4)(20.6/21.5) 24.4 (4/4)(22.7/25.9)

CL-23 INDICATOR 0.5 MILES ENE IT~a-4 0 0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

Intentionally left blank Page 48 of 140 APPENDIX B LOCATION DESIGNATION, DISTANCE & DIRECTION, AND SAMPLE COLLECTION

& ANALYTICAL METHODS Page 49 of 140 Intentionally left blank Page 50 of 140 TABLE B-1: Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, Clinton Power Station, 2014 Location Location Description Distance & Direction From Site A. Surface Water Cl-1 3 CL-90 CL-91 CL-99 Salt Creek Bridge on Rt. 10 (indicator)

Discharge Flume (indicator)

Parnell Boat Access (control)North Fork Access (control)3.6 miles SW 0.4 miles SE 6.1 miles ENE 3.5 miles NNE B. Drinking (Potable)

Water CL-14 C. Well Water Station Plant Service Bldg (indicator)

Mascoutin Recreation Area (indicator)

DeWitt Pump House (indicator)

Onsite CL-7D CL-12T CL-12R D. Milk -bi-weekly

/ monthly CL-116 Dement Dairy (control)E. Air Particulates

/ Air Iodine CL-1 CL-2 CL-3 CL-4 CL-6 CL-7 CL-8 CL-11 CL-15 CL-94 Camp Quest Clinton's Main Access Road Clinton's Secondary Access Road Residence Near Recreation Area Clinton's Recreation Area Mascoutin Recreation Area DeWitt Cemetery Illinois Power Substation (control)Rt. 900N Residence Old Clinton Road End of Discharge Flume (indicator)

Lake Shelbyville (control)F. Fish 2.3 miles ESE 1.6 miles E 1.6 miles E 14 miles WSW 1.8 miles W 0.7 miles NNE 0.7 miles NE 0.8 miles SW 0.7 miles WSW 2.3 miles SE 2.2 miles E 16 miles S 0.9 miles N 0.6 miles E 3.4 miles E 50 miles S 2.1 miles SE 50 miles S 12.5 miles SSE 0.7 miles NE 0.9 miles N 0.7 miles NNE 1.8 miles W 0.7 miles NNE 2.2 miles E 14 miles WSW CL-19 CL-105 G. Shoreline Sediment CL-7B Clinton Lake (indicator)

CL-105 Lake Shelbyville (control)H. Food Products CL-114 CL-115 CL-117 CL-118 I. Grass Cisco (Control)Site's Secondary Access Road Residence North of Site Site's Main Access Road Camp Quest Clinton's Main Access Road DeWitt Cemetery Pasture in Rural Kenney (control)CL-1 CL-2 CL-8 CL-116 B-1 Page 51 of 140 TABLE B-i: Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, Clinton Power Station, 2014 Location Location Description Distance & Direction From Site J. Environmental Dosimetry

-DLR Inner Ring CL-1 1.8 miles W CL-5 0.7 miles NNE CL-22 0.6 miles NE CL-23 0.5 miles ENE CL-24 0.5 miles E CL-34 0.8 miles WNW CL-35 0.7 miles NW CL-36 0.6 miles N CL-42 2.8 miles ESE CL-43 2.8 miles SE CL-44 2.3 miles SSE CL-45 2.8 miles S CL-46 2.8 miles SSW CL-47 3.3 miles SW CL-48 2.3 miles WSW CL-63 1.3 miles NNW Outer Ring CL-51 4.4 miles NW CL-52 4.3 miles NNW CL-53 4.3 miles E CL-54 4.6 miles ESE CL-55 4.1 miles SE CL-56 4.1 miles SSE CL-57 4.6 miles S CL-58 4.3 miles SSW CL-60 4.5 miles SW CL-61 4.5 miles WSW CL-76 4.6 miles N CL-77 4.5 miles NNE CL-78 4.8 miles NE CL-79 4.5 miles ENE CL-80 4.1 miles W CL-81 4.5 miles WNW B-2 Page 52 of 140 TABLE B-i: Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, Clinton Power Station, 2014 Location Location Description Distance & Direction From Site J. Environmental Dosimetry

-DLR (cont.)Special Interest CL-37 3.4 miles N CL-41 2.4 miles E CL-49 3.5 miles W CL-64 2.1 miles WNW CL-65 2.6 miles ENE CL-74 1.9 miles W CL-75 0.9 miles N Supplemental CL-2 0.7 miles NNE CL-3 0.7 miles NE CL-4 0.8 miles SW CL-6 0.8 miles WSW CL-7 2.3 miles SE CL-8 2.2 miles E CL-15 0.9 miles N CL-33 11.7 miles SW CL-84 0.6 miles E CL-90 0.4 miles SE CL-91 6.1 miles ENE CL-97 10.3 miles SW CL-99 3.5 miles NNE CL-1 14 12.5 miles SE Control CL-11 16 miles S B-3 Page 53 of 140 TABLE B-2: Radiological Environmental Monitoring Program -Summary of Sample Collection and Analytical Methods, Clinton Power Station, 2014 Sample Analysis Sampling Method Analytical Procedure Number Medium Surface Gamma Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis Water Spectroscopy from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Surface Tritium Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid Water from a continuous scintillation water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Surface 1-131 Monthly composite TBE, TBE-2012 Radioiodine in various matrices Water from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Drinking Gross Beta Monthly composite TBE, TBE-2008 Gross Alpha and/or gross beta activity in Water from a continuous various matrices water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Drinking Gamma Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis Water Spectroscopy from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Drinking Tritium Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid Water from a continuous scintillation water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Drinking 1-131 Quarterly composite TBE, TBE-2031 Radioactive Iodine in Drinking Water Water from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Well Water Gamma Quarterly composite TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Well Water Tritium Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid from a continuous scintillation water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Fish Gamma Semi-annual samples TBE-2007 Gamma emitting radioisotope analysis Spectroscopy collected via electroshocking or other techniques Env. Inc., SPM-1 Sampling Procedure Manual Air Gross Beta One-week composite TBE, TBE-2008 Gross Alpha and/or gross beta activity in Particulates of continuous air various matrices sampling through glass fiber filter paper Env. Inc., SPM-1 Sampling Procedure Manual Air Gamma Quarterly composite of TBE, TBE-2007 Gamma emitting radioisotope analysis Particulates Spectroscopy each station Env. Inc., SPM-1 Sampling Procedure Manual Air Iodine Gamma One-week composite TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy of continuous air sampling through Env. Inc., SPM-1 Sampling Procedure Manual charcoal filter Milk 1-131 Bi-weekly grab sample TBE, TBE-2012 Radioiodine in various matrices when cows are on pasture. Monthly all other times Env. Inc., SPM-1 Sampling Procedure Manual Milk Gamma Bi-weekly grab sample TBE-2007 Gamma emitting radioisotope analysis Spectroscopy when cows are on pasture. Monthly all other times Env. Inc., SPM-1 Sampling Procedure Manual B-4 Page 54 of 140 TABLE B-2: Radiological Environmental Monitoring Program -Summary of Sample Collection and Analytical Methods, Clinton Power Station, 2014 Sample Analysis Sampling Method Analytical Procedure Number Medium Food Gross Beta Monthly grab June TBE, TBE-2008 Gross Alpha and/or gross beta activity in Products through September various matrices Env. Inc., SPM-1 Sampling Procedure Manual Food Gamma Monthly grab June TBE, TBE-2007 Gamma emitting radioisotopes analysis Products Spectroscopy through September Env. Inc., SPM-1 Sampling Procedure Manual Grass Gamma Biweekly May through TBE, TBE-2007 Gamma emitting radioisotopes analysis Spectroscopy October Env. Inc., SPM-1 Sampling Procedure Manual DLR Optically Stimulated Quarterly DLRs Landauer Incorporated Luminescence comprised of two Dosimetry Ai 2 0 3:C Landauer Incorporated elements.B-5 Page 55 of 140 Figure B-1 Environmental Sampling Locations Within One Mile of the Clinton Power Station, 2014 B-6 Page 56 of 140 Figure B-2 Environmental Sampling Locations Between One and Two Miles of the Clinton Power Station, 2014 B-7 Page 57 of 140 B-8 Page 58 of 140 Figure B-4 Enwonmental Samping Locations Greater Than Five Miles of the Clinton Power Station, 2014 B-9 Page 59 of 140 Intentionally left blank Page 60 of 140 APPENDIX C DATA TABLES AND FIGURES -PRIMARY LABORATORY Page 61 of 140 Intentionally left blank Page 62 of 140 Table C-1.1.CONCENTRATIONS OF 1-131 IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA CL-90 U COLLECTION PERIOD 12/26/13 -01/29/14 01/29/14 -02/26/14 02/26/14 -03/26/14 03/26/14 -04/30/14 04/30/14 -05/28/14 (1)05/28/14 -06/25/14 06/25/14 -07/30/14 07/30/14 -08/27/14 08/27/14 -09/24/14 09/24/14 -10/29/14 10/29/14 -11/26/14 (1)11/26/14 -12/31/14* 0.7< 0.8< 0.7* 0.7< 0.8< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.8 MEAN Table C-I.2 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA U COLLECTION PERIOD 12/26/13 -03/26/14 03/26/14 -06/25/14 06/25/14 -09/24/14 09/24/14 -12/31/14 CL-90 CL-13 CL-91 CL-99< 189< 187< 183< 189 (1)189 187 183 184< 188< 185 (1)< 184 (1)< 186< 189 (1)< 184< 183< 187 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-1 Page 63 of 140 Table C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA SITE COLLECTION PERIOD CL-13 01/29/14 -01/29/14 02/26/14 -02/26/14 03/26/14 -03/26/14 04/30/14 -04/30/14 05/28/14 -05/28/14 06/25/14 -06/25/14 07/30/14 -07/30/14 08/27/14 -08/27/14 09/24/14 -09/24/14 10/29/14 -10/29/14 11/26/14 -11/26/14 12/31/14 -12/31/14 Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144< 40< 39< 33< 20* 56< 38< 40< 34<44< 53< 49* 51< 77< 75< 61 41 + 33< 63< 75< 75< 36< 84< 55< 88< 44<4<4<3<2<5<6<4<4<5<7<5<6 MEAN<4<4<3<2<6<5<4<4<5<6<4<5<4<4<2<2<6<5<6<4<4<6<3<7 10 10 8 5 14 10 10 9 10 12 11 13 10 9 6 4 11 9 13 9 10 11 9 16<4<5<3<2<6<6<4<4<5<6<5<6<4<4<3<2<7<5<5<4<3<6<5<7< 12<8<6<4<11<8<9<9<8< 11< 11<10<8<.9<4<4< 10<9< 10< 10<9<13<7< 12<4<5<3<2<6<5<6<5<6<6<5<8<5<4<3<2<6<6<6<5<5<6<5<7<8<8<7<4< 12< 10<9<7<8< 12<11< 11<9<8<4<4<9<7< 11<8<7< 10<8< 10<4<4<3<2<6<5<5<4<5<6<4<5<5<4<2<2<5<5<6<5<5<5<5<8<4<4<3<2<7<5<5<4<5<5<5<6<6<4<2<2<7<6<6<5<4<7<4<6< 24* 24< 31< 16< 23< 23< 31< 18< 34< 31< 30< 33< 24< 29< 23< 14< 26* 22< 33* 24* 29* 25< 26< 33<7< 12<8<5< 10<4<10<7< 10<7<7<8<6< 10<7<5<9<6< 11<7<9<10<6< 14< 40* 28< 24<15< 43* 36< 35< 26< 39< 46< 39< 42 r)CL-90 12/26/13 -01/29/14 01/29/14 -02/26/14 02/26/14 -03/26/14 03/26/14 -04/30/14 04/30/14 -05/28/14 05/28/14 -06/25/14 06/25/14 -07/30/14 07/30/14 -08/27/14 08/27/14 -09/24/14 09/24/14 -10/29/14 10/29/14 -11/26/14 11/26/14 -12/31/14< 42< 37< 25< 18 (1) < 53< 46< 51< 41< 43< 56 (1) < 42< 65< 102 < 4<47 < 4<67 <2 27 +/- 27 < 2<67 <6<62 <5<91 <5 80 +/-48 <4<38 <4< 117 < 6<91 <4< 72 < 6 38 33 17 14 34 42 44 42 34 40 37 50 MEAN 54 +/- 75-w ri THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION Table C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA SITE COLLECTION PERIOD CL-91 12/26/13 -01/29/14 01/29/14 -02/26/14 02/26/14 -03/26/14 03/26/14 -04/30/14 04/30/14 -05/28/14 05/28/14 -06/25/14 06/25/14 -07/30/14 07/30/14 -08/27/14 08/27/14 -09/24/14 09/24/14 -10/29/14 10/29/14 -11/26/14 11/26/14 -12/31/14 Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144< 42< 39< 27< 14 (1) < 48< 35< 46< 23 (1) < 39< 47< 44< 55< 46< 30< 53 52 +/- 27* 106< 46 58 +/- 46* 27< 36< 95* 86< 57 MEAN 55 +/- 9<5<5<3<1<5<4<5<3<4<4<4<6<5<3<2<4<7<6<4<4<7<5<5< 5<4<3<1<5<4<5<3<4<6<5<6<4<3<2<5<8<5<4<4<6<6<6< 10<9<6<3<8< 10<11<7<7<8* 10* 13<9<9<4<9* 14* 12<9<10* 14<11<13<4<5<3<2<7<5<5<3<3<5<4<6<5<4<2<5<7<5<4<4<7<5<5< 10<8<5<2<10<8<10<6<7<8<8<12<9<7<4<10<14<8<7<9<10<11<13<4<5<3<2<5<5<5<3<5<5<4<5<4<4<2<4<7<4<4<5<6<5<6< 8<9<5<3<9<8< 10<5<8<9<9< 10<8<6<3<9< 13<8<7<7<11<8< 12< 5<4<3<1<5<4<5<3<4<5<4<5<4<3<2<4<6<5<3<4<7<5<7< 5<4<3<1<6<5<5<3<4<5<5<6<5<3<2<5<6<6<5<4<8<5<6< Z3< 34* 25* 10* 21* 20* 32* 14* 32* 24* 26* 28* 18* 29< 14* 23* 29* 30* 20* 28* 32* 29< 33<9<7<3<8<7<10<4<7<7<8<11<7<7<5<6<11< 15<6<11<9<10* 10* 40< 33* 21<12* 38< 35* 40* 24< 37< 37< 39< 45* 31* 18* 13< 37* 40* 32* 32< 35* 88* 38* 56 CL-99 01/15/14 01/29/14 03/12/14 03/26/14 04/30/14 05/28/14 06/25/14 07/30/14 08/27/14 09/24/14 10/29/14 11/26/14-01/29/14-02/26/14-03/26/14-04/30/14-05/28/14-06/25/14-07/30/14-08/27/14-09/24/14-10/29/14-11/26/14-12/31/14 (1)(1)(1)< 37* 30* 17< 42< 54< 33< 35< 39< 59< 41* 60< 53* 71* 15* 87< 60< 97* 51< 42 93 +/- 55* 85* 56 MEAN THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION O*q 0'cy, 0 1 Table C-I1.1 CONCENTRATIONS OF GROSS BETA IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA CL-14 COLLECTION PERIOD 12/26/13 -01129/14 01/29/14 -02/26/14 02/26/14 -03/26/14 03/26/14 -04/30/14 04/30/14 -05/28/14 05/28/14 -06/25/14 06/25/14 -07/30/14 07/30/14 -08/27/14 08/27/14 -09/24/14 09/24/14 -10/29/14 10/29/14 -11/26/14 11/26/14 -12/31/14< 1.5< 1.6< 1.5< 1.6 (1) < 1.3< 1.6< 1.7< 1.5< 1.7< 1.6 (1) < 1.8< 1.5 MEAN Table C-11.2 CONCENTRATIONS OF TRITIUM IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA COLLECTION PERIOD CL-14 01/15/14 03/26/14 03/26/14 -06/25/14 06/25/14 -09/24/14 09/24/14 -12/31/14 (1)(1)< 188< 184< 185< 190 MEAN Table C-11.3 CONCENTRATIONS OF 1-131 IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA COLLECTION PERIOD 12/26/13 -01/29/14 01/29/14 -02/26/14 02/26/14 -03/26/14 03/26/14 -04/30/14 04/30/14 -05/28/14 05/28/14 -06/25/14 06/25/14 -07/30/14 07/30/14 -08/27/14 08/27/14 -09/24/14 09/24/14 -10/29/14 10/29/14 -11/26/14 11/26/14 -12/31/14 CL-14< 0.9< 0.7< 0.8< 0.8 (1) < 0.8< 0.6< 0.5< 0.7< 0.6< 0.6 (1) < 0.5< 0.8 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-4 Page 66 of 140 Table C-11.4 CONCENTRATIONS OF GAMMA EMITTERS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA SITE COLLECTION PERIOD CL-14 12/26/13 -01/29/14 01/29/14 -02/26/14 02/26/14 -03/26/14 03/26/14 -04/30/14 04/30/14 -05/28/14 05/28/14 -06/25/14 06/25/14 -07/30/14 07/30/14 -08/27/14 08/27/14 -09/24/14 09/24/14 -10/29/14 10129/14 -11/26/14 11/26/14 -12/31/14 Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144< 33< 54< 27< 21 (1) < 38< 63< 48< 33< 43< 71 (1) < 52< 50< 31< 110< 22< 22< 85< 133< 100< 32< 93< 56< 123< 44<4<6<2<2<4<6<5<4<4<6<5<5<4<7<3<3<4<8<4<4<4<7<5<6<8< 12<5<6<7< 15< 11<8< 12< 11* 10< 13<4<7<3<3<3<8<4<4<5<7<5<5<7< 11<5<5<9< 12< 11<9< 10< 10< 12<13 4 7 3 3 4 9 5 4 5 7 6 7 7 12 5 4 7 15 10 7 9 12 9 13<4<7<2<2<4<6<5<4<5<7<5<6<3<7<3<2<5<8<5<4<5<7<6<6< 17* 32< 23< 18< 21* 28< 32* 20< 33* 30< 24* 25<6< 11<5<6<6< 12< 10<5< 11< 11<8< 15< 35< 39< 21< 12< 32< 52< 38< 27< 38< 57< 49< 32 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION 0=

Table C-II1.1 CONCENTRATIONS OF TRITIUM IN WELL WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA COLLECTION PERIOD CL-12R CL-12T CL-7D 03/26/14 -03/26/14 06/25/14 09/24/14 12/31/14-06/25/14-09/24/14-12/31/14< 168< 165< 180< 178< 164< 167< 179< 183< 168< 165< 178< 182 MEAN C-6 Page 68 of 140 Table C-111.2 CONCENTRATIONS OF GAMMA EMITTERS IN WELL WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA SITE COLLECTION Be-7 PERIOD CL-12R 03/26114 < 16 06/25/14 < 63 09/24/14 < 46 12/31/14 < 68 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144< 31* 63< 47* 76<2<5<5<8 MEAN CL-12T 03/26/14 06/25/14 09/24/14 12/31/14< 21 < 39< 50 < 97< 46 < 69< 68 < 90 2 7 5 7<2<7<5<8<2<6<4<6<2<5<5<8<4 <2<12 <6<11 <5<14 <8 5 12 11 13<2<5<5<8<3 <2<16 <7<9 <5<15 <8<4 <2<13 <6<10 <5<17 <7<4 <2<11 <6<9 <6<14 <8<3 <2<12 <7<8 <5<14 <8<4 <2<10 <6<8 <4<10 <7<4 <2<10 <5<9 <4<14 <7 2 8 4 8 MEAN 2 6 6 5 2 6 5 7<12 <4 << 33 < 11 << 34 <8 << 37 < 10 <* 20* 27< 33* 28<6<6<10*13 12 52 35 51 17 52 37 50 15 38 38 51 CL-7D 03/26/14 06/25/14 09/24/14 12/31/14*18< 54* 46* 58 30 +/- 27 57 53 126 2 5 5 7<4 <2<10 <6<11 <4<14 <7<15 <4 <<23 <8 <<37 < 11 << 34 < 9 <MEAN aq 0 0 Table C-IV.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Be-7 PERIOD K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144 CL-105 bluegill carp crappie largemouth bass bluegill carp largemouth bass white bass CL-19 bluegill carp channel catfish largemouth bass bluegill carp channel catfish largemouth bass 05/05/14 05/05/14 05/05/14 05/05/14 10/01/14 10/01/14 10/01/14 10/01/14 MEAN 05/05/14 05/05/14 05/05/14 05/05/14 10/01/14 10/01/14 10101/14 10/01/14 MEAN* 763< 643< 789< 458< 551< 511< 795< 627 4029 3201 3550 3790 3073 3166 3315 3450 1357 815 1037 847 828 818 1131 1029< 76< 68* 76< 47< 61< 55< 73< 61< 89< 60< 78< 58< 56< 57< 81< 67< 183< 129< 224< 134< 136< 143< 172< 186< 75< 58< 51< 57< 63< 63< 71< 74< 173< 126< 178< 83< 125< 109< 179< 124< 94< 84< 89< 60< 71< 63< 97< 73< 178< 155< 142< 84< 124< 102< 141< 121< 70< 61< 74< 43< 63< 51< 66< 66< 69< 71< 69< 39< 57< 53< 85< 59< 887< 830< 930< 605< 513< 442< 632< 617< 277< 265< 200< 240< 209< 126< 225< 123< 406< 440< 492< 232< 303< 311* 442< 417 3447 +/- 661 (-I< 892< 864< 596< 1012< 703< 758< 725< 763 3685 4885 2976 4676 2536 4566 3145 2218 1123 1365 854 1271 938 1144 1085 1351< 78< 97< 61< 85< 74< 77< 83< 93< 97< 104< 68< 118< 69< 85< 95< 84< 202< 189< 119* 215< 144< 197< 188< 255< 92< 84< 57< 83< 67< 78< 64< 106< 213< 161< 145< 209< 147< 151< 159< 207< 102< 130< 76< 111< 77* 90< 44< 124< 191< 155< 115< 216< 139< 132< 135< 164< 98< 96< 59< 91< 73< 73< 66< 91< 94< 69< 59< 93< 70< 76< 80< 70< 885< 1151< 772< 1091< 621< 632< 608< 739< 277< 287< 170< 273< 158* 231< 292< 211< 580< 539< 291< 679< 455< 595< 437< 529 3586 +/- 2054 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES 0 0; Table C-V.1 SITE COLLECTION PERIOD CL-07B 05/05/14 <10/01/14 <MEAN CL-105 05/05/14 <10/01/14 <MEAN CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/KG DRY +/- 2 SIGMA Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 375 8056 +/- 996 < 42 < 43 < 109 < 42 < 72 < 47 463 7231 +/- 809 < 46 < 47 < 117 < 40 < 127 < 54-7644 +/- 1167 ------352 9633 +/- 1013 < 40 <40 < 90 < 38 < 110 <48 356 7515 +/- 752 < 36 < 36 < 94 < 33 < 71 < 37-8574 +/- 2995 ------Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144< 81 < 40 < 49 < 262 < 52 < 272< 97 < 49 < 44 < 588 < 147 < 283< 84 < 43 < 45 < 233 < 77 < 240< 56 < 30 < 35 < 429 < 122 < 200 Z-Zi-JTHE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES Table C-VI.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF E-3 PCI/CU METER +/-2 SIGMA COLLECTION GROUP I PERIOD CL-2 CL-3 CL-4 CL-6 CL-15 CL-94 01/01/14 -01/08/14 24 +/-5 24 +/-5 21 +/- 4 25 +/-5 22 +/-4 25 +/-5 01/08/14 -01/15/14 25 +/- 5 22 +/- 5 22 +/- 5 17 +/- 4 18 +/- 5 25 +/- 5 01/15/14 -01/22/14 18 +/-4 18 +/-4 18 +/-4 22 +/-5 22 +/-5 20 +/-4 01/22/14 -01/29/14 14 +/-4 15 +/-4 12 +/-4 14 +/-4 16 +/-4 16+/- 4 01/29/14 -02/05/14 24 +/-5 24 +/-5 21 +/-4 23 +/-5 25 +/-5 18+/- 4 02/05/14 -02/12/14 25 +/-6 20 +/-5 23 +/-5 21 +/-5 23 +/-5 26+/- 5 02/12/14-02/19/14 28 +/-6 28 +/-5 26 +/-5 30 +/-5 27 +/-5 33 +/-5 02/19/14 -02/26/14 19 +/-5 16 +/-4 18 +/-4 20 +/-5 17 +/-4 18+/- 4 02/26/14-03/05/14 33 +/-6 25 +/-5 29 +/-5 29 +/-5 27 +/-5 22+/- 4 03/05/14 -03/12/14 21 +/- 5 23 +/- 5 19 +/- 5 24 +/- 5 18 +/- 5 23 +/- 5 03/12/14 -03/19/14 12 +/- 4 16 +/- 4 15 +/- 4 11 +/- 4 18 +/- 4 15 +/- 4 03/19/14 -03/26/14 17 +/-4 17 +/-4 16 +/-4 16 +/-4 12 +/-4 17+/- 4 03/26/14 -04/02/14 14 +/-4 16 +/-4 19 +/-4 20 +/-5 18 +/-4 14 +/-4 04/02/14 -04/09/14 17 +/- 5 13 +/- 4 11 +/- 4 9 +/- 4 10 +/- 4 8 +/- 4 04/09/14 -04/16/14 15 +/-4 15 +/-4 16 +/-4 14 +/-4 14 +/-4 16 +/-4 04/16/14 -04/23/14 18 +/-4 19 +/-5 14 +/-4 16 +/-4 16 +/-4 16+/- 4 04/23/14 -04/30/14 8 +/- 4 11 +/- 4 11 +/- 4 8 +/- 4 11 +/- 4 7 +/- 4 04/30/14 -05/07/14 13 +/-4 13 +/-4 10 +/-4 9 +/-4 10 +/-4 7 +/-4 05/07/14 -05/14/14 16 +/-4 14 +/-4 21 +/- 4 18 +/-4 14 +/-4 15+/- 4 05/14/14 -05/21/14 10 +/-4 14 +/-4 15 +/-4 14 +/-4 12 +/-4 16+/- 4 05/21/14 -05/28/14 19 +/- 4 18 +/- 4 18 +/- 4 16 +/- 4 17 +/- 4 11 +/- 4 05/28/14 -06/04/14 18 +/-4 15 +/-4 17 +/-4 18 +/-4 18 +/-4 17+/- 4 06/04/14 -06/11114 17 +/- 4 13 +/- 4 15 +/- 4 12 +/- 4 11 +/- 4 16 +/- 4 06/11/14 -06/18/14 21 +/- 5 18 +/- 5 17 +/- 4 17 +/- 4 16 +/- 4 17 +/- 4 06/18/14 -06/25/14 13 +/- 4 16 +/- 5 13 +/- 4 15 +/- 4 11 +/- 4 13 +/- 4 06/25/14 -07/02/14 14 +/- 4 11 +/- 4 9 +/- 4 9 +/- 4 10 +/- 4 10 +/- 4 07/02/14 -07/09/14 14 +/- 4 10 +/- 4 11 +/- 4 15 +/- 4 19 +/- 4 15 +/- 4 07/09/14 -07/16/14 14 +/-4 14 +/-4 16 +/-4 14 +/-4 15 +/-4 13+/- 4 07/16/14-07/23/14 27 +/-5 26 +/-5 23 +/-5 22 +/-4 28 +/-5 25+/- 5 07/23/14 -07/30/14 12 +/- 4 15 +/- 4 15 +/- 4 16 +/- 4 14 +/- 4 11 +/- 4 07/30/14-08/06/14 26 +/-5 29 +/-5 27 +/-5 25 +/-5 25 +/-5 31+/- 5 08/06/14-08/13/14 22 +/-5 20 +/-4 28 +/-5 24 +/-5 21 +/-5 22+/- 4 08/13/14 -08/20/14 24 +/-5 20 +/-5 22 +/-5 22 +/-5 18 +/-5 18+/- 5 08/20/14 -08/27/14 20 +/-5 23 +/-5 21 +/-5 22 +/-5 14 +/-4 19+/- 5 08/27/14 -09/03/14 17 +/-4 15 +/-4 19 +/-4 21 +/-5 18 +/-4 20+/- 4 09/03/14 -09/10/14 17 +/-4 18 +/-5 15 +/-4 15 +/-4 19 +/-5 12+/- 4 09/10/14 -09/17/14 11 +/- 4 11 +/- 4 11 +/- 4 12 +/- 4 10 +/- 4 9 +/- 4 09/17/14 -09/24/14 21 +/-5 18 +/-5 18 +/-4 17 +/-5 22 +/-5 22+/- 5 09/24/14 -10/01/14 22 +/-4 20 +/-4 22 +/-4 19 +/-4 25 +/-5 22+/- 5 10/01/14 -10/08/14 15 +/- 4 13 +/- 4 13 +/- 4 12 +/- 4 11 +/- 4 13 +/- 4 10/08/14 -10/15/14 16 +/-4 13 +/-4 12 +/-4 15 +/-4 12 +/-4 17+/- 4 10/15/14 -10/22/14 15 +/- 4 12 +/- 4 13 +/- 4 12 +/- 4 11 +/- 4 14 +/- 4 10/22/14 -10/29/14 22 +/-5 19 +/-5 18 +/-5 21 +/-5 16 +/-5 20+/- 5 10/29/14 -11/05/14 12 +/- 4 14 +/- 4 13 +/- 4 22 +/- 5 16 +/- 4 15 +/- 4 11/05/14 -11/12/14 13 +/- 4 16 +/- 4 17 +/- 4 18 +/- 4 16 +/- 4 15 +/- 4 11/12/14 -11/19/14 18 +/- 4 18 +/- 4 22 +/- 5 18 +/- 4 19 +/- 4 14 +/- 4 11/19/14 -11/26/14 21 +/- 4 64 +/- 11 (1) 23 +/- 4 22 +/- 4 28 +/- 5 23 +/- 4 11/26/14 -12/03/14 28 +/- 5 29 +/- 5 27 +/- 5 29 +/- 5 21 +/- 5 27 +/- 5 12/03/14-12/10/14 34 +/-5 34 +/-5 39 +/-5 37 +/-5 38 +/-5 33 +/-5 12/10/14 -12/17/14 25 +/-5 25+/- 5 24 +/-5 19 +/-4 20 +/-4 24+/- 5 12/17/14 -12/24/14 23 +/-5 23 +/-5 22 +/-5 22+/- 5 20 +/-5 19+/- 5 12/24/14 -12/31/14 19 +/-4 18 +/-4 19 +/-4 17 +/-4 18 +/-4 15+/- 4 MEAN 19 +/-11 19 +/-17 18 +/-11 18 +/-12 18 +/-12 18 +/-12 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-10 c-i oPage 72 of 140 Table C-VI.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF E-3 PCI/CU METER +/-2 SIGMA COLLECTION GROUP II I GROUP III PERIOD CL-1 CL-7 CL-8 CL-11 01/01/14 -01/08/14 24 +/- 5 2U +/- 4 25 +/- 5 24 +/- 5 01/08/14 -01/15/14 20 +/- 5 20 +/- 5 20 +/- 5 21 +/- 5 01/15/14 -01/22/14 20 +/- 4 20 +/- 4 17 +/- 4 24 +/- 5 01/22/14 -01/29/14 12 +/- 4 15 +/-4 14 +/- 4 13 +/- 4 01/29/14 -02/05/14 22 +/- 5 23 +/- 5 21 +/- 5 24 +/- 5 02/05/14 -02/12/14 20 +/- 4 22 +/- 5 20 +/- 4 24 +/- 5 02/12/14 -02/19/14 31 +/- 5 28 +/- 5 27 +/- 5 28 +/- 5 02/19/14 -02/26/14 19 +/- 5 21 +/- 5 20 +/- 5 19 +/- 5 02/26/14 -03/05/14 27 +/- 5 27 +/- 5 22 +/- 4 31 +/- 5 03/05/14 -03/12/14 19 +/- 5 19 +/- 5 20 +/- 5 17 +/- 4 03/12/14 -03/19/14 12 +/- 4 16 +/- 4 16 +/- 4 17 +/- 4 03/19/14 -03/26/14 14 +/- 4 16 +/- 4 20 +/-4 21 +/- 4 03/26/14 -04/02/14 13 +/- 4 14 +/-4 12 +/-4 14 +/- 4 04/02/14 -04/09/14 13 +/- 4 11 +/- 4 9 +/- 4 10 +/- 4 04/09/14 -04/16/14 9 +/- 4 10 +/-4 18 +/- 4 18 +/- 4 04/16/14 -04/23/14 19 +/- 5 16 +/-4 18 +/- 4 18 +/- 4 04/23/14 -04/30/14 11 +/-4 7 +/-4 9 +/- 4 10 +/- 4 04/30/14 -05/07/14 8 +/- 4 10 +/- 4 12 +/- 4 16 +/- 4 05/07/14 -05/14/14 15 +/- 4 18 +/- 4 21 +/-4 15 +/- 4 05/14/14 -05/21/14 15 +/- 4 11 +/- 4 20 +/- 4 14 +/- 4 05/21/14 -05/28/14 19 +/- 4 14 +/- 4 18 +/- 4 16 +/- 4 05/28/14 -06/04/14 17 +/- 4 17 +/- 4 18 +/- 4 18 +/- 4 06/04/14 -06/11/14 14 +/- 4 13 +/- 4 13 +/- 4 15 +/- 4 06/11/14 -06/18/14 15 +/- 4 18 +/- 4 18 +/- 5 14 +/- 4 06/18/14 -06/25/14 11 +/- 4 13 +/- 4 13 +/- 4 14 +/- 4 06/25/14 -07/02/14 13 +/- 4 11 +/- 4 10 +/- 4 11 +/- 4 07/02/14 -07/09/14 12 +/- 4 14 +/- 4 14 +/- 4 11 +/- 4 07/09/14 -07/16/14 11 +/- 4 13 +/- 4 13 +/- 4 14 +/- 4 07/16/14 -07/23/14 26 +/- 5 23 +/- 5 24 +/- 5 28 +/- 5 07/23/14 -07/30/14 12 +/- 4 11 +/- 4 15 +/- 4 18 +/- 4 07/30/14 -08/06/14 28 +/- 5 25 +/-5 27 +/-5 32 +/- 5 08/06/14 -08/13/14 19 +/- 4 22 +/- 4 25 +/- 5 31 +/- 5 08/13/14 -08/20/14 22 +/- 5 15 +/- 4 15 +/- 4 24 +/- 5 08/20/14 -08/27/14 19 +/- 5 16 +/- 4 21 +/- 5 15 +/- 4 08/27/14 -09/03/14 19 +/- 4 13 +/- 4 15 +/- 4 16 +/- 4 09/03/14 -09/10/14 16 +/-4 12 +/-4 16 +/- 4 14 +/- 4 09/10/14 -09/17/14 14 +/- 4 11 +/- 4 14 +/- 4 8 +/- 4 09/17/14 -09/24/14 19 +/- 5 18 +/- 4 20 +/- 5 23 +/- 5 09/24/14 -10/01/14 22 +/-4 22 +/- 5 28 +/- 5 25 +/- 5 10/01/14 -10/08/14 12 +/- 4 13 +/- 4 11 +/- 4 14 +/- 4 10/08/14 -10/15/14 16 +/- 4 12 +/- 4 16 +/- 4 9 +/- 4 10/15/14 -10/22/14 12 +/- 4 12 +/- 4 12 +/- 4 14 +/- 4 10/22/14 -10/29/14 20 +/- 5 19 +/- 5 18 +/- 5 17 +/- 5 10/29/14 -11/05/14 17 +/- 4 15 +/- 4 17 +/- 4 15 +/- 4 11/05/14 -11/12/14 16 +/- 4 13 +/- 4 18 +/- 4 12 +/- 4 11/12/14 -11/19/14 16 +/- 4 19 +/- 5 17 +/- 5 22 +/- 5 11/19/14 -11/26/14 20 +/- 4 21 +/- 4 27 +/- 5 26 +/- 5 11/26/14 -12/03/14 24 +/- 5 24 +/- 5 24 +/- 5 26 +/- 5 12/03/14 -12/10/14 41 +/- 5 32 +/- 5 36 +/- 5 31 +/- 5 12/10/14 -12/17/14 19 +/- 4 21 +/- 4 23 +/-4 24 +/- 5 12/17/14 -12/24/14 22 +/- 5 24 +/- 5 24 +/- 5 20 +/- 5 12/24/14 -12/31/14 19 +/- 4 15 +/-4 20 +/- 4 19 +/- 4 MEAN 18 +/- 12 17 +/- 11 18 +/- 11 19 +/- 13 C-11I Page 73 of 140 Table C-VI.2 MONTHLY AND YEARLY MEAN VALUES OF GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I -ON-SITE LOCATIONS GROUP II -INTERMEDIATE DISTANCE LOCATIONS GROUP III -CONTROL LOCATIONS COLLECTION PERIOD 01/01/14 -01/29/14 01/29/14 -02/26/14 02/26/14 -04/02/14 04/02/14 -04/30/14 04/30/14 -06/04/14 06/04/14 -07/02/14 07/02/14 -07/30/14 07/30/14 -09/03/14 09/03/14 -10/01/14 10/01/14 -10/29/14 10/29/14 -12/03/14 12/03/14 -12/31/14 01/01/14 -12/31/14 MIN MAX MEAN+/-2SD 12 25 20 +/- 8 16 33 23 +/- 9 11 33 19 +/- 11 7 19 13 +/- 7 7 21 15 +/-7 9 21 14+/- 6 10 28 17 11 14 31 22+/- 8 9 25 17+/- 9 11 22 15+/- 6 12 64 21 +/-19 15 39 24 +/-14 7 64 18 13 COLLECTION PERIOD 01/01/14 01/29/14 02/26/14 04/02/14 04/30/14 06/04/14 07/02/14 07/30/14 09/03/14 10/01/14 10/29/14 12/03/14 01/29/14 02/26/14 04/02/14 04/30/14 06/04/14 07/02/14 07/30/14 09/03/14 10/01/14 10/29/14 12/03/14 12/31/14 MIN MAX MEAN+/-2SD 12 25 19 +/- 8 19 31 23 +/- 8 12 27 18 +/- 10 7 19 12 +/- 8 8 21 15 +/- 7 10 18 13 +/- 5 11 26 16 +/- 11 13 28 20 +/- 9 11 28 17 +/- 10 11 20 14+/- 6 13 27 19+/- 8 15 41 24 +/-16 7 41 18 +/-11 COLLECTION PERIOD 01/01/14 01/29/14 02/26/14 04/02/14 04/30/14 06/04/14 07/02/14 07/30/14 09/03/14 10/01/14 10/29/14 12/03/14-01/29/14-02/26/14-04/02/14-04/30/14-06/04/14-07/02/14-07/30/14-09/03/14-10/01/14-10/29/14-12/03/14-12/31/14 MIN MAX MEAN+/-2SD 13 24 21 +/- 11 19 28 24 +/- 7 14 31 20 +/- 13 10 18 14 +/- 8 14 18 16 +/- 3 11 15 14 +/- 4 11 28 18 +/- 15 15 32 23 +/- 17 8 25 17 +/- 16 9 17 13 +/- 6 12 26 20 +/- 13 19 31 24 +/- 11 8 32 19 +/- 13-7 01/01/14 -12/31/14 01/01/14 -12/31/14 C)I"o.,D Table C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION PERIOD CL-1 01/01/14 -041021 04/02/14 -07/021 07/02/14 -10/01/10/01/14 -12/311 Be-7 K-40 Co-60 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 Ce-144 14'14'14'14 43 +/- 22 67 +/- 17 75 +/- 25 37 +/- 21*<32 < 3<29 <2<38 <2 23 +/- 20 < 2 MEAN 56 +/- 37 -CL-11 01/01/14 04/02/14 07/02/14 10/01/14 MEAN CL-15 01/01/14 04/02/14 07/02/14 10/01/14 MEAN CL-2 01/01/14 04/02/14 07/02/14 10/01/14 04/02/14 07/02/14 10/01/14 12/31/14 04/02/14 07/02/14 10/01/14 12/31/14 04/02/14 07/02/14 10/01/14 12/31/14 04/02/14 07/02/14 10/01/14 12/31/14 04/02/14 07/02/14 10/01/14 12/31/14 53 +/- 17 63 +/- 20 64 +/- 24 48 +/- 17 57 +/- 16 59 +/- 19 85 +/- 18 71 +/- 28 50 +/- 16 66 +/- 30 59 +/- 27 67 +/- 28 70 +/- 25 54 +/- 26< 39 29< 46< 35< 28< 28< 47< 34* 38< 45< 37< 53<3+/-24 < 2<2<1 MEAN 63 +/- 14 -<3<2<2<2<3<3<3<4<2<2<3<3<3<4<3<2< 3<3<3<3< 3<4<3<2<2<3<3<2<3<3<4<5<3<2<6<3<3<4<4<3< 6<5<8<5<5<5<6<4<4<4<5<4<5<6<6<8< 3<2<4<3<3<3<5<3<3<4<4<3<3<3<4<6* 17 < 2<17 <2<16 <3<21 <2<20 < 2<24 < 3<27 < 3<9 <1<17 <2<22 <2<24 < 3<16 <2<25 <2<21 <3<19 <3<32 <3<16 <2<20 <3<31 <4<27 <3<2<2<2<2<2<2<2<2<2<2<2<2<2<2< 2<4<2<3<4<2<2<3<3<2< 4< 4<7<5<5<4<7<4<5<4<7<4<5<4<7<8<4<4<8<6<4<4<6<5< 1 I<10<11<10<11<11< 12<7< 11< 12< 11<9<13<11<11< 17<9<11< 14<11 CL-3 01/01/14 04/02/14 07/02/14 10/01/14 MEAN 46 +/- 21 70 +/- 21 79 +/- 27 53 +/- 23 62 +/- 30< 29 64 +/- 33 60 +/- 25 75 +/- 21 66 +/- 15< 27* 21* 66< 47< 55< 57< 54< 37<5 <3<5 <3<10 <6<7 <4 Uh 0 CL-4 01/01/14 04/02/14 07/02/14 10/01/14 MEAN<6<8<6<6<3<4<5<3* 23* 30* 21* 21<2<4<2<2 10 13 10 11 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES Table C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION PERIOD Be-7 K-40 Co-60 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 Ce-144 CL-6 01/01/14 04/02/14 07/02/14 10/01/14 MEAN CL-7 01/01/14 04/02/14 07/02/14 10/01/14 MEAN-04/02/14-07/02/14-10/01/14-12/31/14-04/02/14-07/02/14-10/01/14-12/31/14-04/02/14-07/02/14-10/01/14-12/31/14-04/02/14-07/02/14-10/01/14-12/31/14 51 92 67 45 64 +/- 42 -+/- 19+/- 23+/- 41+/- 22 63 +/- 19 60 +/- 20 63 +/- 24< 48 62 +/- 4< 36< 40< 53< 63 CL-8 01/01/14 04/02/14 07/02/14 10/01/14 MEAN CL-94 01/01/14 04/02/14 07/02/14 10/01/14 MEAN 64 93 62 49+/- 21+/- 29+/-17+/- 16< 28< 28< 36< 45< 32< 44< 32< 26< 35< 35< 34< 57<2<3<4<4<2<2<2<3<2<4<2<1<3<2<3<3<3<3<6<5<3<2<4<4<4<3<3<2<3<3<3<3<6<6< 10<8<4<4<6<8<6<6<5<3<4<5<4<6<3<3<8<5<3<3<4<6<3<5<4<3<4<3<5<4< 20< 17< 37< 32< 18< 16* 21< 28< 26< 26< 15< 16< 21< 24< 14< 24<2<3<4<3<3<2<2<4<2<2<2<2<3<3<2<3<2<2<4<4<2<2<2<3<2<3<2<1<2<2<2<2<5<4< 12<8<4<4<6<8<4<6<6<4<5<5<6<5< 13<11< 22< 18< 11*10< 10< 15< 10< 16<8<7< 10<11<9< 11 67 +/- 37 44 69 61 74+/- 22+/- 22+/- 22+/- 19 62 +/- 27-I 0 0 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES Table C-VII.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA COLLECTION PERinfl GROUP I CL-2 CL-3 01/01/14 -01/08/14

< 28 01/08/14 -01/15/14

< 56 01/15/14 -01/22/14

< 62 01/22/14 -01/29/14

< 64 01/29/14 -02/05/14

< 34 02/05/14 -02/12/14

< 62 02/12/14 -02/19/14

< 70 02/19/14 -02/26/14

< 55 02/26/14 -03/05/14

< 56 03/05/14 -03/12/14

< 45 03/12/14 -03/19/14

< 59 03/19/14 -03/26/14

< 67 03/26/14 -04/02/14

< 61 04/02/14 -04/09/14

< 39 04/09/14 -04/16/14

< 68 04/16/14 -04/23/14

< 39 04/23/14 -04/30/14

< 28 04/30/14 -05/07/14

< 37 05/07/14 -05/14/14

< 33 05/14/14 -05/21/14

< 65 05/21/14 -05/28/14

< 42 05/28/14 -06/04/14

< 43 06/04/14 -06/11/14

< 28 06/11/14 -06/18/14

< 40 06/18/14 -06/25/14

< 42 06/25/14 -07/02/14

< 29 07/02/14 -07/09/14

< 65 07/09/14 -07/16/14

< 27 07/16/14 -07/23/14

< 69 07/23/14 -07/30/14

< 46 07/30/14 -08/06/14

< 29 08/06/14 -08/13/14

< 56 08/13/14 -08/20/14

< 24 08/20/14 -08/27/14

< 60 08/27/14 -09/03/14

< 62 09/03/14 -09/10/14

< 42 09/10/14 -09/17/14

< 57 09/17/14 -09/24/14

< 52 09/24/14 -10/01/14

< 44 10/01/14 -10/08/14

< 55 10/08/14 -10/15/14

< 23 10/15/14 -10/22/14

< 37 10/22/14 -10/29/14

< 63 10/29/14 -11/05/14

< 38 11/05/14 -11/12/14

< 58 11/12/14 -11/19/14

< 41 11/19/14 -11/26/14

< 31 11/26/14 -12/03/14

< 52 12/03/14 -12/10/14

< 41 12/10/14 -12/17/14

< 61 12/17/14 -12/24/14

< 34 12/24/14 -12/31/14

< 46* 28* 57*<64* 61* 34* 50* 23* 56* 44< 44* 58*<64* 62* 38* 68* 38* 28* 38* 33* 64< 44< 44* 27< 40* 44* 29* 65* 27* 69* 47* 29* 57*<24* 61* 63< 43* 56* 52* 44* 54* 61* 36* 25* 38* 61* 41* 30 (1)* 51* 41* 62< 34* 43 CL-4 CL-6 CL-15< 27 < 28 < 14< 56 < 55 < 68< 61 < 63 < 60< 63 < 63 < 64*<33 < 34 < 33< 49 < 50 < 64< 60 < 59 < 53< 55 < 56 < 57< 17 < 44 < 41< 45 < 45 < 61< 57 < 22 < 60< 66 < 68 < 59< 60 < 60 < 47< 38 < 39 < 44< 70 < 67 < 49< 39 < 39 < 38< 29 < 30 < 29< 36 < 37 < 53< 32 < 32 < 12*<65 < 65 < 67< 42 < 42 < 39< 43 < 43 < 44< 27 < 28 < 26*<33 < 34 < 47*<15 < 41 < 42< 29 < 30 < 30< 64 < 25 < 64< 27 < 15 < 27< 69 < 69 < 60< 46 < 46 < 44< 29 < 11 < 46< 56 < 22 < 45< 24 < 12 < 19*<59 < 59 < 68< 61 < 33 < 17< 41 < 16 < 45< 56 < 57 < 56< 49 < 52 < 57< 43 < 44 < 34< 52 < 55 < 58< 58 < 60 < 49< 37 < 35 < 52< 64 < 65 < 52< 36 < 16 < 44< 21 < 56 < 68< 41 < 41 < 30< 30 < 31 < 30*<51 < 52 < 50< 41 < 16 < 40< 61 < 60 < 69< 34 < 34 < 18< 45 < 19 < 52 I CL-94* 26* 66* 32* 66* 33* 66* 52* 55* 41* 59* 58* 59< 48< 42< 48* 38* 28* 50* 29* 65* 37* 45* 26< 47< 41* 30* 26< 11* 60* 42< 47* 19* 18* 69< 46< 44* 23* 54< 40* 60* 50* 53* 49< 45< 67* 30* 30* 50< 40< 66* 18* 50 MEAN----(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-15 c-I 5Page 77 of 140 Table C-VII.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF E-3 PCI/CU METER +/-2 SIGMA COLLECTION GROUP 11 GROUP III PERIOD CL-i CL-7 CL-8 CL-li1 01/01/14 -01/08/14

< 11 < 26 < 26 < 27 01/08/14 -01/15/14

< 33 < 34 < 65 < 64 01/15/14 -01/22/14

< 26 < 60 < 61 < 58 01/22/14 -01/29/14

< 25 < 35 < 65 < 64 01/29/14 -02/05/14

< 13 < 18 < 32 < 33 02/05/14 -02/12/14

< 19 < 27 < 64 < 64 02/12/14 -02/19/14

< 60 < 28 < 51 < 54 02/19/14 -02/26/14

< 22 < 23 < 55 < 57 02/26/14 -03/05/14

< 44 < 17 < 40 < 46 03/05/14 -03/12/14

< 27 < 31 < 61 < 59 03/12/14 -03/19/14

< 58 < 31 < 58 < 57 03/19/14 -03/26/14

< 25 < 24 < 57 < 57 03/26/14 -04/02/14

< 33 < 20 < 49 < 48 04/02/14 -04/09/14

< 15 < 18 < 42 < 42 04/09/14 -04/16/14

< 27 < 48 < 20 < 47 04/16/14 -04/23/14

< 16 < 20 < 38 < 37 04/23/14 -04/30/14

< 11 < 28 < 30 < 12 04/30/14 -05/07/14

< 14 < 22 < 51 < 51 05/07/14 -05/14/14

< 13 < 29 < 29 < 29 05/14/14 -05/21/14

< 24 < 27 < 66 < 63 05/21/14 -05/28/14

< 25 < 22 < 37 < 37 05/28/14 -06/04/14

< 18 < 18 < 45 < 42 06/04/14 -06/11/14

< 12 < 9 < 26 < 26 06/11/14 -06/18/14

< 13 < 19 < 48 < 47 06/18/14 -06/25/14

< 40 < 17 < 42 < 42 06/25/14 -07/02/14

< 12 < 11 < 30 < 30 07/02/14 -07/09/14

< 65 < 62 < 63 < 62 07/09/14 -07/16/14

< 27 < 27 < 27 < 27 07/16/14 -07/23/14

< 29 < 22 < 60 < 60 07/23/14 -07/30/14

< 25 < 16 < 43 < 42 07/30/14 -08/06/14

< 29 < 47 < 25 < 46 08/06/14 -08/13/14

< 56 < 44 < 44 < 44 08/13/14 -08/20/14

< 25 < 18 < 18 < 10 08/20/14 -08/27/14

< 23 < 29 < 69 < 68 08/27/14 -09/03/14

< 62 < 45 < 45 < 45 09/03/14 -09/10/14

< 43 < 24 < 44 < 44 09/10/14 -09/17/14

< 31 < 57 < 58 < 57 09/17/14 -09/24/14

< 20 < 23 < 54 < 55 09/24/14 -10/01/14

< 18 < 12 < 41 < 35 10/01/14 -10/08/14

< 29 < 23 < 59 < 58 10/08/14 -10/15/14

< 58 < 21 < 50 < 50 10/15/14 -10/22/14

< 14 < 22 < 54 < 52 10/22/14 -10/29/14

< 64 < 21 < 49 < 50 10/29/14 -11/05/14

< 36 < 25 < 45 < 45 11/05/14 -11/12/14

< 56 < 29 < 67 < 68 11/12/14 -11/19/14

< 17 < 17 < 31 < 31 11/19/14 -11/26/14

< 31 < 13 < 30 < 30 11/26/14 -12/03/14

< 20 < 21 < 50 < 5i 12/03/14 -12/10/14

< 17 < 41 < 40 < 41 12/10/14 -12/17/14

< 27 < 34 < 67 < 69 12/17/14 -12/24/14

< 13 < 7 < 18 < 18 12/24/14 -12/31/14

< 44 < 51 < 22 < 49 MEAN ----C-16 C-! 6Page 78 of 140 Table C-VIII.1 CONCENTRATIONS OF 1-131 IN MILK SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA CONTROL FARM COLLECTION CL-116 PERIOD 01/19/14 < 0.6 02/26/14 < 0.6 03/26/14 < 0.6 04/30/14 < 0.8 05/14/14 < 0.8 05/28/14 < 0.7 06/11/14 < 0.8 06/25/14 < 0.6 07/09/14 < 0.6 07/23/14 < 0.7 08/06/14 < 0.6 08/20/14 < 0.7 09/03/14 < 0.8 09/17/14 < 0.5 10/01/14 < 0.6 10/15/14 < 0.6 10/29/14 < 0.5 11/26/14 < 0.4 12/31/14 < 0.5 MEAN C-17 Page 79 of 140 Table C-VIII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/-2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144 PERIOD CL-1 16 01/19/14 02/26/14 03/26/14 04/30/14 05/14/14 05/28/14 06/11/14 06/25/14 07/09/14 07/23/14 08/06/14 08/20/14 09/03/14 09/17/14 10/01/14 10/15/14 10/29/14 11/26/14 12/31/14 MEAN< 49 1177 +/- 121 < 4< 62 1224 +/- 165 < 6<44 1226 +/- 104 <4< 65 1122 +/- 168 < 8< 51 1034 +/- 136 < 6< 56 1287 +/- 159 < 6< 65 1184 +/- 171 < 8< 39 1227 +/- 121 < 5< 48 1177 +/- 118 < 5< 57 1240 +/- 144 < 7< 45 1244 +/- 155 < 5< 55 1099 +/- 142 < 6< 42 1208 +/- 98 < 5< 69 1266 +/- 179 < 7< 56 1127 +/- 140 < 6< 43 1242 +/- 107 < 4< 60 1273 +/- 192 < 7< 55 1294 +/- 128 < 6< 45 1148 +/- 123 < 7<5 <14<6 <14<5 <11<7 <20<7 <15<6 <12<8 <17<4 <10<5 <13<7 <15<5 <14<7 <14<5 <11<9 <15<7 <18<5 <11<7 <20<6 <19<6 <14<6<9<4<9<6<7<9<5<5<7<7<7<5<8<7<5< 10<7<7<9< 13< 12< 19< 15< 15< 20< 12< 13< 16< 14< 13< 10< 18< 14< 10< 20< 16< 15<6 <9<7 <10<5 <8<8 <18<7 <11<7 <12<8 <14<5 <8<5 <8<7 <12<6 <9<7 <11<5 <9<8 <13<7 <11<5 <8<8 <14<7 <12<6 <12<4 <5<6 <7<5 <5<6 <7<6 <7<6 <8<7 <8<4 <5<5 <6<6 <7<6 <7<6 <7<4 <5<6 <9<5 <6<4 <4<7 <7<6 <6<6 <6< 57< 29< 31< 40< 27< 30< 41< 22< 28< 28< 32< 35< 33< 38< 42< 39< 38< 39< 28< 15 < 36< 10 < 49<9 <38< 12 <48<8 <36< 10 <47< 10 < 57<7 <36<7 <45< 11 < 37< 8 <46<9 <35< 10 < 39<10 <44< 11 <31< 12 < 31< 14 < 53< 12 < 31<9 <32 00 1200 +/- 139 eIq 0 0.0-CD Table C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144 PERIOD CL-114 06/25/14 Cabbage 344 +/- 134 4166 +/- 514 < 17 < 19 < 37 < 19 < 42 06/25/14 Lettuce 498 +/- 157 5928 +/- 540 < 20 < 20 < 40 < 21 < 49 06/25/14 Swiss Chard 253 +/- 126 5181 +/- 537 < 20 < 16 < 49 < 22 < 60 07/30/14 Cabbage < 152 3581 +/- 393 < 18 < 18 < 42 < 18 < 41 07/30/14 Kale < 148 3716 +/- 389 < 14 < 12 < 35 < 15 < 31 07/30/14 Swiss Chard 467 +/- 171 6411 +/- 473 < 16 < 18 < 48 < 16 < 40 08/27/14 Cabbage 322 +/- 126 4782 +/- 367 < 16 < 17 < 43 < 14 < 37 08/27/14 Substituted velvet leaf (1) 751 +/- 187 8465 +/- 395 < 17 < 17 < 38 < 18 < 37 08/27/14 Swiss Chard 433 +/- 131 4585 +/- 390 < 14 < 18 < 36 < 14 < 29 09/24/14 Kale 205 +/- 131 5373 +/- 330 < 11 < 13 < 32 < 10 < 29 09/24/14 Substituted Bean Greens (1) 922 +/- 76 7159 +/- 171 < 6 < 6 < 15 < 5 < 13 09/24/14 Swisschard 444 +/- 115 5627 +/- 331 < 10 < 11 < 31 < 9 < 29 MEAN 464 +/- 443 5415 +/- 2867< 19 < 29 < 28 < 15< 24 < 33 < 38 < 22< 21 < 41 < 33 < 19< 19 < 28 < 50 < 14< 15 < 29 < 42 < 13< 20 < 31 < 47 < 14< 16 < 31 < 48 < 14< 19 < 33 < 59 < 17< 16 < 28 < 42 < 11< 13 < 24 < 48 < 11< 7 < 10 < 31 < 5< 11 < 22 < 57 < 10< 19 < 34 < 43 < 21< 22 < 40 < 49 < 22< 23 < 43 < 42 < 24< 21 < 34 < 58 < 16< 15 < 27 < 55 < 14< 21 < 37 < 54 < 15<8 <15 <28 <7< 18 < 23 < 54 < 13< 11 < 20 < 42 < 11< 12 < 21 < 37 < 10<8 <15 <43 <7<7 < 12 <30 <5< 16 < 91 < 29 < 110< 24 < 104 < 27 < 163< 24 < 98 < 32 < 105< 16 < 112 < 38 < 108< 14 < 110 < 27 < 89< 15 < 115 < 29 < 107< 17 < 100 < 33 < 75< 17 < 125 < 31 < 126< 15 < 116 < 20 < 94< 12 < 115 < 30 < 79< 5 < 54 < 12 < 46< 11 < 93 < 26 < 83< 23 < 113 < 32 < 165< 22 < 96 < 38 < 198< 26 < 118 < 23 < 164< 21 < 125 < 39 < 130< 17 < 106 < 36 < 102< 22 < 133 < 37 < 102< 8 < 58 < 15 < 46< 15 < 110 < 27 < 107< 10 < 81 < 19 < 72< 11 < 79 < 21 < 54< 7 < 73 < 16 < 57< 6 < 54 < 13 < 40'.0 CL-115 06/25/14 Cabbage < 284 3307 +/- 466 < 21 < 20 < 42 < 23 < 44 06/25/14 Kale < 252 4715 +/- 541 < 27 < 23 < 52 < 22 < 49 06/25/14 Lettuce 412 +/- 209 4538 +/- 538 < 19 < 20 < 45 < 26 < 50 07/30/14 Cabbage < 183 6378 +/- 512 < 20 < 18 < 47 < 17 < 39 07/30/14 Kale 318 +/- 199 5562 +/- 521 < 19 < 16 < 36 < 19 < 38 07/30/14 Lettuce 391 +/- 173 4492 +/- 523 < 15 < 20 < 42 < 16 < 49 08/27/14 Kale 462 +/- 85 5710 +/- 203 < 7 < 8 < 19 < 8 < 18 08/27/14 Swiss Chard 413 +/- 118 5420 +/- 413 < 13 < 17 < 43 < 13 < 32 08/27/14 Lettuce 732 +/- 167 6417 +/- 369 < 10 < 11 < 22 < 9 < 22 09/24/14 Kale/Nightshade (comp) (1) 1307 +/- 128 5896 +/- 270 < 11 < 12 < 28 < 12 < 27 09/24/14 Substituted Bean Greens (1) 1656 +/- 92 4572 +/- 170 < 7 < 9 < 20 < 7 < 18 09/24/14 Swiss Chard 572 +/- 71 6332 +/- 181 < 6 < 7 < 17 < 6 < 15 MEAN 696 +/- 939 5278 +/- 1921 -G0 (b 00 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION Table C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION PERIOD CL-1 17 06125/14 Cab 06/25/14 Lett 06/25/14 Swis 07/30/14 Cab 07/30/14 Letti 07/30/14 Swis 08/27/14 Cab 08/27/14 Swis 08/27/14 Kale 09/24/14 Kale 09/24/14 Sub!09/24/14 Swis Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144 bage uce ss Chard bage uce ss Chard bage ss Chard stituted Marigolds ss Chard< 288 274 +/- 178 402 +/- 202 402 +/- 160 542 +/- 229 360 +/- 127 341 +/- 157 364 +/- 124 659 +/- 93 551 +/- 80 (1) 1512 +/- 99 369 +/- 112 3120 +/- 550 3535 +/- 483 7511 +/- 735 3464 +/- 398 4054 +/- 429 5544 +/- 424 4584 +/- 295 5313 +/- 405 5554 +/- 235 4001 +/- 152 6787 +/- 218 6185 +/- 285< 22< 20* 30< 16<11<13< 12< 14< 11<6<8< 10 MEAN 525 +/- 692 4971 +/- 2809 -< 20< 23< 25< 18< 10< 15< 15< 14< 11<7<9< 10< 16< 16< 25< 17< 18* 17< 17< 14< 16<6<6< 12< 57< 48< 74< 39* 22< 38< 32< 38< 29< 17< 21< 28* 31< 41< 69< 45< 45< 48< 36< 39< 41< 14< 15< 32< 33< 21* 31< 21< 10< 12< 12< 15*12<6<8< 10< 15< 18< 25< 11< 15< 14*17< 13< 17<5<6< 11< 66< 56* 71< 37< 26< 36* 28< 38* 25< 14< 19< 24* 32< 45* 70< 40< 35< 37< 35< 33< 38< 12< 14< 25< 24< 20< 27< 18< 13< 14*15< 16<12<7<10< 12< 16< 19< 26< 19< 18< 19*17< 15< 20<6<6< 12< 39< 34< 51< 27< 23< 24* 25< 27* 21< 12< 16< 19< 27< 33< 48< 35* 32< 28< 32< 23< 29< 10< 11< 21* 46< 37< 43< 57< 50< 50* 58< 54* 38< 36* 28< 51< 29* 36< 42< 54< 60< 55< 59< 45< 56< 25< 31< 58< 22< 19< 26< 15< 12< 13< 12< 12< 10<6<8<8< 15* 17< 20* 16< 16< 13< 13<12< 15<5<5<8< 27< 22< 25< 17< 11< 15< 14< 14< 11<6<8<9< 16* 21< 26<19<17< 14*14< 13< 17<5<6< 12< 116< 94< 130< 122< 80< 93< 113< 119* 83< 60* 61< 93< 72< 97< 115* 117* 124< 115* 120< 101< 135< 47< 54< 90* 25< 31< 40< 31< 30< 23< 24< 36< 24< 16< 15< 21< 22< 21< 32< 36< 26< 17< 39< 23* 32< 14< 16< 22* 180< 135< 124< 118< 100< 98< 185< 93< 48< 46< 56< 73< 122< 140< 114< 107< 110< 107< 96< 61* 122< 32* 38* 83 n CL-118 06/25/14 06/25/14 06/25/14 07/30/14 07/30/14 07/30/14 08/27/14 08/27/14 08/27/14 09/24/14 09/24/14 09/24/14 Cabbage Lettuce Swiss Chard Cabbage Lettuce Swiss Chard Cabbage Kale Swiss Chard Cabbage Kale Swiss Chard 156 +/- 110 512 +/- 167 435 +/- 169< 173 374 +/- 170 528 +/- 220< 136 324 +/- 124 347 +/- 134 706 +/- 57 569 +/- 82 409 +/- 107 2879 +/- 336 5979 +/- 506 8897 +/- 740 2725 +/- 374 5844 +/- 427 8239 +/- 547 3296 +/- 353 3496 +/- 328 5114 +/- 413 3953 +/- 123 4615 +/- 153 7161 +/- 372<16< 19< 20< 17< 16< 15< 17< 16< 16<5<6<9 MEAN 436 +/- 304 5183 +/- 4165 --o hiq 0 00 THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION Table C-IX.2 CONCENTRATIONS OF GAMMA EMITTERS IN GRASS SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION PERIOD Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144 CL-01 05/14/14 05/28/14 06/11/14 06/25/14 07/09/14 07/23/14 08/06/14 08/20/14 09/03/14 09/17/14 10/01/14 10/15/14 10/29/14 891 +/- 351 5305 +/- 613 < 28< 25 < 57 < 30 < 50 1903 +/- 281 1226 +/- 226 841 +/- 228 756 +/- 265 2728 +/- 352 734 +/- 175 693 +/- 71 1559 +/- 180 3124 +/- 268 914 +/- 238 3330 +/- 231 3177 +/- 205 4921 +/- 546 < 25 3934 +/- 542 < 25 5120 +/- 554 < 23 6482 +/- 599 < 12 5885 +/- 658 < 28 4972 +/- 507 < 18 4901 +/- 157 < 5 4255 +/- 317 < 15 4548 +/- 428 < 14 6400 +/- 518 < 16 3332 +/- 317 < 13 6086 +/- 364 < 14* 24* 22* 25* 16* 31* 22<7* 16* 14* 13<13* 16< 56 < 24 < 62< 55 < 25 < 62< 53 < 27 < 58< 52 < 14 < 38< 55 < 24 < 56< 48 < 17 < 39< 17 < 6 < 13< 39 < 15 < 38< 42 < 15 < 38< 37 < 12 < 26< 34 < 12 < 29< 37 < 14 < 36< 28 < 51 < 45 < 27< 27 < 42 < 39 < 20< 25 < 45 < 50 < 24< 26 < 48 < 39 < 25< 12 < 24 < 46 < 13< 28 < 45 < 51 < 27< 22 < 33 < 42 < 17<7 <11 <41 <5< 19 < 29 < 49 < 14< 18 < 31 < 55 < 13< 13 < 25 < 59 < 13< 17 < 23 < 56 < 13< 17 < 27 < 54 < 13< 29 < 123 < 32< 24 < 114 < 38< 31 < 152 < 33< 26 < 124 < 37< 15 < 118 < 17< 29 < 138 < 38< 18 < 122 < 35< 6 < 66 < 17< 15 < 118 < 34< 14 < 107 < 34< 13 < 108 < 19< 13 < 111 < 34< 15 < 112 < 27* 230* 164* 183* 173<64* 189* 90<34< 97* 125* 114< 94* 87 MEAN 1683 +/- 2086 5088 +/- 1899 CL-02 05/14/14 05/28/14 06/11/14 06/25/14 07/09/14 07/23/14 08/06/14 08/20/14 09/03/14 09/17/14 10/01/14 10/15/14 10/29/14 2427 +/- 296 1265 +/- 386 903 +/- 355 518 +/- 193 2108 +/- 223 2652 +/- 362 2374 +/- 261 1905 +/- 111 3980 +/- 293 3211 +/- 224 2712 +/- 298 3834 +/- 286 5198 +/- 236 6051 +/- 549 < 19 4519 +/- 741 < 30 3900 +/- 609 < 34 6311 +/- 526 < 22 4174 +/- 327 < 17 6584 +/- 740 < 31 4971 +/-443 < 18 4959 +/- 193 < 7 6212 +/- 413 < 14 5155 +/- 318 < 11 6034 +/-449 < 13 2380 +/- 295 < 15 6385 +/- 350 < 13* 20< 37* 38* 20* 17* 26*19<8*15* 14<16*15<15< 48 < 20 < 44< 82 < 36 < 72< 75 < 39 < 72< 49 < 21 < 48<39 < 17 <34< 70 < 28 < 82< 39 < 16 < 40<22 <7 <17< 37 < 15 < 34< 34 < 12 < 30< 34 < 18 < 30< 36 < 14 < 29< 31 < 13 < 31< 20 < 38 < 31 < 19< 30 < 51 < 47 < 29< 34 < 58 < 58 < 30< 21 < 38 < 35 < 21< 18 < 33 < 58 < 16< 29 < 56 < 48 < 28< 21 < 30 < 47 < 17<8 <15 <50 <6< 16 < 30 < 49 < 14< 16 < 24 < 52 < 13< 17 < 30 < 51 < 14< 18 < 29 < 57 < 13< 15 < 27 < 54 < 13< 21 < 97 < 26< 28 < 151 < 37< 35 < 160 < 42< 23 < 88 < 20< 17 < 117 < 35< 34 < 146 < 37< 18 < 113 < 36< 7 < 83 < 25< 16 < 104 < 25< 14 < 95 < 22< 13 < 115 < 26< 14 < 120 < 34< 14 < 103 < 26* 149* 161* 141* 157* 103* 170* 141< 33* 89* 115* 102< 97* 106 UQ 00 MEAN 2545 +/- 2603 5203 +/- 2468 Table C-IX.2 CONCENTRATIONS OF GAMMA EMITTERS IN GRASS SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION PERIOD Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144l.,J CL-08 05/14/14 05/28/14 06/11/14 06/25/14 07/09/14 07/23/14 08/06/14 08/20/14 09/03/14 09/17/14 10/01/14 10/15/14 10/29/14 MEAN CL-116 05/14/14 05/28/14 06/11/14 06/25/14 07/09/14 07/23/14 08/06/14 08/20/14 09/03/14 09/17/14 10/01/14 10/15/14 10/29/14 406 +/- 241 493 +/- 316 1148 +/- 318 1568 +/- 305 2207 +/- 226 2378 +/- 327 1933 +/- 252 371 +/- 70 1711 +/- 205 2929 +/- 260 2593 +/- 294 1878 +/- 229 1693 +/- 229 6892 6005 5597 6423 6044 7579 5612 6190 7045 5926 6192 5212 8596+/- 620+/- 886+/- 623+/- 499+/- 419+/- 701+/- 478+/- 177+/- 405+/- 454+/- 493+/- 389+/- 470< 25< 34< 27<9< 16< 32< 18<7< 16< 17< 14< 17< 16< 28< 34< 28<8< 14* 28< 21<8< 18< 20< 14< 20< 17< 55< 73* 56< 19< 39< 62< 53 20 39<44< 33 47< 51< 24< 27< 31< 23* 16< 35< 18<7< 18< 20< 16< 19< 18< 60< 73< 62< 29< 32< 58< 45< 17< 40< 45< 34< 45< 43< 24* 36< 33< 10< 19< 32< 23<8< 19< 20< 17< 21< 17< 47< 55< 44< 18< 33< 54< 38< 14< 30< 36< 25< 31< 31< 36< 57< 55< 24< 59* 52< 51< 51< 59< 60< 60< 58< 57< 25< 30< 26<11*17< 31< 20<7< 15< 15< 12< 15< 15< 26< 38< 27< 13< 15< 31< 18<7< 17* 21< 16< 16< 17* 133* 158< 117< 64< 125< 140< 102< 81< 107< 128< 111< 125< 126< 29< 51< 35<11< 23< 42< 37< 22< 24< 31< 29< 36< 34* 182* 201< 197< 108< 125< 206< 124< 43< 124< 126< 98< 79< 102 1639 +/- 1662 6409 +/- 1839 -699 +/- 363 1144 +/- 241 500 +/- 221 1134 +/- 332 1938 +/- 200 1483 +/- 293 1067 +/- 200 1307 +/- 81 1222 +/- 157 3059 +/- 282 1398 +/- 276 2597 +/- 222 4173 +/- 209 5693 4129 4713 5343 5948 6405 5173 6020 4400 4754 6425 4382 5901+/- 848+/- 524+/- 675+/- 546+/- 374+/- 778+/- 499+/- 171+/- 339+/- 461+/- 587+/- 419+/- 302* 36* 18< 28< 28* 16< 28* 20<7< 14< 18< 16< 15< 12< 38*18< 27< 31< 17< 29< 22<9* 14* 19< 21< 15< 13< 83< 51< 62< 65< 37< 69< 47< 21< 38< 46< 46< 42< 30< 40< 19< 33< 30< 16< 27< 21<7< 13< 18< 16< 16< 14< 98* 29* 70< 69* 36* 65< 53< 17* 36< 37< 31< 33< 27< 37< 25* 26< 30< 18* 24< 24<8* 16< 21< 16< 17< 14< 72 k 33< 49< 56* 32< 50< 35< 15< 28< 31< 26< 33< 24< 58< 39< 40< 55< 59< 46< 56< 55< 45< 59<54< 60< 48< 38< 22< 27< 33< 15* 26< 18<7<13< 17< 14< 14* 12<41< 21< 31< 31< 15* 28< 22<7< 14< 16< 16< 16*13< 170< 93* 121< 144< 124< 125< 121< 88< 103< 100< 104< 123< 95< 16< 24< 27< 36< 36< 57< 26< 20< 29< 38< 28< 36* 26< 177< 135< 163< 250< 120< 163< 125< 56< 72< 118< 93< 106< 88~0 CD 00 0 0 MEAN 1671 +/- 2066 5330 +/- 1593 Table C-X.1 QUARTERLY DLR RESULTS FOR CLINTON POWER STATION, 2014 RESULTS IN UNITS OF MILLIREM/QUARTER

+/- 2 STANDARD DEVIATIONS STATION CODE CL-01 CL-02 CL-03 CL-04 CL-05 CL-06 CL-07 CL-08 CL-11 CL-15 CL-22 CL-23 CL-24 CL-33 CL-34 CL-35 CL-36 CL-37 CL-41 CL-42 CL-43 CL-44 CL-45 CL-46 CL-47 CL-48 CL-49 CL-51 CL-52 CL-53 CL-54 CL-55 CL-56 CL-57 CL-58 CL-60 CL-61 CL-63 CL-64 CL-65 CL-74 CL-75 CL-76 CL-77 CL-78 CL-79 CL-80 CL-81 CL-84 CL-90 CL-91 CL-97 CL-99 CL-114 MEAN+/-23D-22.0 + 1.7 2237 + 1.5 21.8 + 2.7 21t8 + 1.9 23.0 + 3.5 19.7 +/- 2.0 21.0 +/- 2.4 21.9 + 2.9 21.0 + 0.8 20.0 + 2.1 23.1 +/- 3.0 24.4 +/- 3.3 23.8 +/- 2.0 22.7 + 2.4 23.0 +/- 2.6 21.4 +/- 2.9 21.9 +/- 3.2 21.1 + 4.1 23.6 +/- 3.7 22.1 +/- 3.9 23.7 +/- 2.1 22.4 +/- 4.4 22.8 +/- 5.6 23.1 +/- 3.6 23.2 +/- 4.3 21.5 +/- 5.8 23.1 +/- 3.7 24.1 +/- 3.0 24.0 +/- 5.0 20.8 +/- 1.8 22.9 +/- 5.0 23.1 +/- 3.7 23.6 +/- 3.4 23.6 +/- 2.1 22.9 +/- 4.5 22.7 +/- 2.4 23.2 +/- 2.9 20.2 +/- 3.6 22.8 +/- 1.6 23.9 +/- 3.9 20.7 +/- 1.8 22.5 +/- 4.3 22.8 +/- 4.9 21.1 +/- 2.7 21.5 +/- 3.0 22.5 +/- 4.2 22.5 +/- 4.0 23.0 +/- 2.4 22.5 +/- 4.9 19.2 +/- 2.6 21.3 +/- 1.6 23.1 +/- 2.8 18.2 +/- 2.2 21.5 +/- 3.1 JAN-MAR APR-JUN JUL-SEP OCT-DEC 21.2 22.1 20.9 20.8 21.3 18.3 20.0 20.1 20.6 19.0 21.8 22.7 22.4 21.5 21.3 19.9 20.1 18.4 21.4 19.6 22.8 19.9 19.4 20.5 20.4 17.3 20.6 22.8 22.0 20.0 19.9 20.6 21.1 22.4 21.2 22.3 21.7 18.1 23.3 21.9 20.0 20.1 19.9 19.3 20.2 20.2 19.8 21.6 19.7 18.5 20.6 22.0 17.6 20.5 21.5 22.3 20.9 22.0 23.2 19.9 20.7 21.8 20.7 19.4 23.1 23.2 23.8 22.7 23.2 21.1 21.8 21.7 23.3 22.8 23.3 22.2 22.6 23.5 23.4 22.1 24.1 24.0 23.3 21.3 23.0 25.0 24.1 24.0 23.1 23.0 23.8 20.3 21.9 23.1 20.6 22.0 24.2 22.1 21.2 22.0 23.6 22.9 22.6 18.6 20.7 23.1 17.7 21.1 22.2 22.5 21.7 21.4 22.0 19.9 20.5 22.0 21.0 20.2 22.4 25.7 24.1 22.2 23.0 21.0 21.6 21.0 23.7 21.8 23.5 22.0 23.0 23.9 23.2 22.4 22.7 23.3 (1)20.0 22.8 23.0 24.3 23.0 21.3 21.4 22.4 19.8 22.3 24.2 20.2 22.4 21.7 20.7 20.9 22.4 22.4 22.8 22.0 18.6 21.9 22.1 17.5 20.7 23.1 23.8 23.8 23.0 25.3 20.7 22.7 23.6 21.5 21.4 25.2 25.9 24.8 24.3 24.5 23.4 24.0 23.3 25.9 24.2 25.2 25.3 26.2 24.5 25.7 24.1 24.8 26.2 26.8 21.8 26.0 23.7 24.8 24.8 26.0 24.2 24.9 22.5 23.6 26.5 22.0 25.3 25.4 22.1 23.6 25.3 24.3 24.5 25.6 21.2 22.1 25.0 19.8 23.8 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-23 Page 85 of 140 TABLE C-X.2 MEAN QUARTLY DLR RESULTS FOR THE INNER RING, OUTER RING, SPECIAL INTEREST, SUPPLEMENTAL AND CONTROL LOCATIONS FOR CLINTON POWER STATION, 2014 RESULTS IN UNITS OF MILLIREM/QUARTER

+/- 2 STANDARD DEVIATIONS OF THE STATION DATA COLLECTION PERIOD JAN-MAR APR-JUN JUL-SEP OCT-DEC INNER RING+ 2 S.D.20.5 +/- 3.1 22.6 +/- 2.0 22.6 +/- 2.7 24.6 +/- 2.1 OUTER RING SPECIAL INTEREST SUPPLEMENTAL CONTROL 20.9 +/- 2.2 23.2 +/- 2.1 22.2 +/- 2.3 24.7 +/- 2.8 20.8 +/- 3.1 22.4 +/- 2.4 22.4 +/- 2.8 24.5 +/- 3.2 20.1 +/- 2.7 21.0 +/- 3.2 20.9 +/- 3.0 22.9 +/- 3.4 20.6 +/- 0.0 20.7 +/- 0.0 21.0 +/- 0.0 21.5 +/- 0.0 TABLE C-X.3

SUMMARY

OF THE AMBIENT DOSIMETRY PROGRAM FOR CLINTON POWER STATION, 2014 RESULTS IN UNITS OF MILLIREM/QUARTER

+/- 2 STANDARD DEVIATION LOCATION INNER RING OUTER RING SPECIAL INTEREST SUPPLEMENTAL CONTROL SAMPLES PERIOD ANALYZED MINIMUM 64 17.3 63 19.3 28 18.4 56 17.5 4 20.6 PERIOD MAXIMUM 26.2 26.8 26.5 25.6 21.5 PERIOD MEAN+/- 2 S.D.22.6 +/- 3.8 22.7 +/- 3.6 22.5 +/- 3.8 21.2 +/- 3.6 21.0 +/- 0.8 PRE-OP MEAN+ 2 S.D., ALL LOCATIONS 18.0 +/- 2.4 INNER RING STATIONS -CL-01, CL-05, CL-22, CL-23, CL-24, CL-34, CL-35, CL-36, CL-42, CL-43, CL-44, CL-45, CL-46, CL-47, CL-48, CL-63 OUTER RING STATIONS -CL-51, CL-52, CL-53, CL-54, CL-55, CL-56, CL-57, CL-58, CL-60, CL-61, CL-76, CL-77, CL-78, CL-79, CL-80, CL-81 SPECIAL INTEREST STATIONS -CL-37, CL-41, CL-49, CL-64, CL-65, CL-74, CL-75 SUPPLEMENTAL STATIONS -CL-02, CL-03, CL-04, CL-06, CL-07, CL-08, CL-1 14, CL-1 5, CL-33, CL-84, CL-90, CL-91, CL-97, CL-99 CONTROl STATION -CL-11 C-24 Page 86 of 140 FIGURE C-1 MEAN MONTHLY GROSS BETA CONCENTRATION IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CPS, 2014 0.052 0.047 0.042 0.037 0 0.032 C., 0.027 S 0.022 I-< 0.017 0.012 0.007 0.002 MONTH PRE-OP (ALL SITES)---2014 INDICATOR---2014 CONTROL C-25 Page 87 of 140 FIGURE C-2 MEAN QUARTERLY AMBIENT GAMMA RADIATION LEVELS (DLR) IN THE VICINITY OF CPS, 2014 50 45 40 35 E 1 30 E 25 20 15 10 QUARTER mEPRE-OP D32014 Indicator U 2014 control C-26 Page 88 of 140 APPENDIX D INTER-LABORATORY COMPARISON PROGRAM Page 89 of 140 Intentionally left blank Page 90 of 140 TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2014 (PAGE 1 OF 3)Identification Reported Known Ratio (c)Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)March 2014 E10854 E10855 E10857 E10856 Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-134 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L 95.1 91.7 pCi/L 10.9 15.1 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 96.6 112 449 186 250 248 292 230 312 321 53.0 232 100 122 122 135 111 140 187 98.5 119 491 210 253 268 297 219 323 337 53.9 223 95.3 115 121 135 99.3 147 153 AP Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 Water Fe-55 June 2014 E10858 E10913 E10914 E10916 E10915 E10917 pCi 74.1 76.4 pCi/L 2090 1760 pCi/L 85.9 91.3 pCi/L 13.8 14.5 1.04 0.72 0.98 0.94 0.91 0.89 0.99 0.93 0.98 1.05 0.97 0.95 0.98 1.04 1.05 1.06 1.01 1.00 1.12 0.95 1.22 0.97 1.19 0.94 0.95 0.95 0.90 1.01 0.91 1.03 0.94 0.99 1.04 1.00 0.97 1.03 1.13 1.00 1.06 1.05 0.99 0.95 1.02 1.07 1.00 A W A A A A A A A A A A A A A A A A A A W A A A A A A A A A A A A A A A A A A A A A A A Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 86.5 111 255 147 123 105 155 106 251 218 95.1 215 122 95.1 88.7 115 72.6 193 179 90.9 124 253 162 120 112 156 102 252 224 92.6 190 122 89.8 84.1 116 76.7 189 168 AP Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 pCi 85.6 85.2 A Water Fe-55 pCi/L 1680 1810 D-1 0.93 A Page 91 of 140 TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2014 (PAGE 2 OF 3)I Identification Month/Year Number Reported Known Units Value (a) Value (b)Matrix Nuclide Ratio (c)TBE/Analytics Evaluation (d)September2014 E10946 E10947 E10949 E10948 Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L 90.7 96.9 pCi/L 14.0 16.4 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 92.0 117 281 141 186 137 138 162 75.2 286 97.8 212 106 131 85.7 92.8 113 53.2 202 97.6 126 288 158 193 143 142 158 73.0 297 82.1 188 103 126 93.0 92.3 103 47.5 193 AP Ce-141 Cr-51 Cs-1 34 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 Water Fe-55 Soil Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi 83.9 89.8 pCi/L 2010 1720 0.94 0.85 0.94 0.93 0.98 0.89 0.96 0.96 0.97 1.03 1.03 0.96 1.19 1.13 1.03 1.04 0.92 1.01 1.10 1.12 1.05 0.93 1.17 1.12 0.94 0.93 1.09 0.93 1.16 1.02 1.08 1.02 0.90 0.83 0.90 0.94 0.99 0.95 0.98 0.94 0.98 1.05 0.97 0.95 E10950 E10951 pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g pCi/g 0.208 0.398 0.216 0.398 0.197 0.242 0.238 0.117 0.447 0.186 0.425 0.233 0.365 0.211 0.209 0.233 0.108 0.438 December2014 E11078 El1079 Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L 85.7 95.7 pCi/L 12.9 15.6 A A A A A A A A A A A A A A A A A A A A A A pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L 85.9 205 402 156 194 122 220 183 287 224 95.1 219 406 164 198 130 225 175 297 235 D-2 Page 92 of 140 TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2014 (PAGE 3 OF 3)Identification Reported Known Ratio (c)Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)December2014 E11081 AP Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 Water Fe-55 pCi pCi pCi pCi pCi pCi pCi pCi pCi 96.4 171 73.1 99.0 57.5 107 74.2 144 114 102 190 76.9 92.6 60.8 105 81.6 139 110 0.95 0.90 0.95 1.07 0.95 1.02 0.91 1.04 1.04 0.95 0.89 A A A A A A A A A A A E11080 E11082 pCi 93.5 98.2 pCi/L 1760 1970 (a) Teledyne Brown Engineering reported result.(b) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.(c) Ratio of Teledyne Brown Engineering to Analytics results.(d) Analytics evaluation based on TBE internal QC limits: A= Acceptable, reported result falls within ratio limits of 0.80-1.20.

W-Acceptable with warning, reported result falls within 0. 70-0.80 or 1.20-1.30.

N = Not Acceptable, reported result falls outside the ratio limits of < 0. 70 and > 1.30.D-3 Page 93 of 140 TABLE D-2 ERA ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2014 (PAGE 1 OF 1)Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Limits Evaluation (c)May 2014 RAD-97 MRAD-20 Water Sr-89 Sr-90 Ba-1 33 Cs-1 34 Cs-137 Co-60 Zn-65 Gr-A Gr-B 1-131 U-Nat H-3 Filter Gr-A Water Sr-89 Sr-90 Ba-133 Cs-134 Cs-137 Co-60 Zn-65 Gr-A Gr-B 1-131 U-Nat H-3 Filter Gr-A pCi/L 38.25 pCi/L 24.65 pCi/L 89.1 pCi/L 45.55 pCi/L 91.15 pCi/L 65.10 pCi/L 244 pCi/L 45.65 pCi/L 27.95 pCi/L 23.75 pCi/L 9.61 pCi/L 8435 pCi/filter 28.0 pCi/L 30.4 pCi/L 18.6 pCi/L 46.8 pCi/L 88.0 pCi/L 99.0 pCi/L 92.5 pCi/L 325 pCi/L 29.9 pCi/L 27.5 pCi/L 15.8 pCi/L 5.74 pCi/L 6255 pCi/filter 27.3 36.7 26.5 87.9 44.3 89.1 64.2 235 61.0 33.0 25.7 10.2 8770 27.5 -43.6 19.2 -30.9 74.0- 96.7 35.5 -48.7 80.2- 101 57.8-73.1 212-275 31.9-75.8 21.4 -40.7 21.3-30.3 7.95- 11.8 7610-9650 A A A A A A A A A A A A A 46.0 15.4-71.4 November 2014 RAD-99 31.4 21.8 49.1 89.8 98.8 92.1 310 37.6 27.4 20.3 5.80 6880 22.8-38.1 15.6-25.7 40.3 -54.5 73.7 -98.8 88.9-111 82.9- 104 279 -362 19.4-48.1 17.3 -35.3 16.8 -24.4 4.34 -6.96 5940 -7570 A A A A A A A A A N (1)A A MRAD-21 36.9 12.4 -57.3 A (1) The Iodine-131 was evaluated as failed with a ratio of 0. 778. No cause could be found for the slighly low activity.

TBE would evaluate this as acceptabIle with warning. A rerun was not possible due to /-131 decay. All ERA Iodine-131 evaluations since 2004 have been acceptable.

NCR 14-08 (a) Teledyne Brown Engineering reported result.(b) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.(c) ERA evaluation:

A=acceptable.

Reported result falls within the Warning Limits. NA=not acceptable.

Reported result falls outside of the Control Limits. CE=check for Error Reported result falls within the Control Limits and outside of the Warning Limit.D-4 Page 94 of 140 TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP: TELEDYNE BROWN ENGINEERING, 2014 (PAGE 1 OF 2)Identification Reported Known Acceptance Month/Year Number Media Nuclide* Units Value (a) Value (b) Range Evaluation (c)March 2014 14-MaW30 Water Am-241 Cs-1 34 Cs-137 Co-57 Co-60 H-3**Mn-54 Ni-63 Pu-238 Pu-239/240 K-40 Sr-90**U-234/233**

U-238**Zn-65 14-MaS30 14-RdF30 Soil Cs-134 Cs-137 Co-57 Co-60 Mn-54 K-40 Sr-90 Zn-65 Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample 0.764 20.7 28.0 26.5 15.6 NR 13.5 NR 0.911 0.751 NR NR NR NR-0.201 2.02 1300 1069 1.32 1510 669 4.14 763 NR NR NR NR NR 0.8220 NR 0.720 23.1 28.9 27.5 16.0 321 13.9 34.0 0.828 0.676 8.51 0.225 1.45 1238 966 1.22 1430 622 695 0.504 -0.936 16.2-300 20.2 -37.6 19.3 -35.8 11.2-20.8 225-417 9.7- 18.1 23.8-44.2 0.580 -1.076 0.473 -0.879 (1)5.96- 11.06 0.158 -0.293 1.02- 1.89 (1)(1)867- 1609 676- 1256 (2)1001 -1859 435 -809 (1)487 -904 A A A A A N (3)A N (3)N (3)N (3)N (3)N (3)A A A A A A A A A N (3)N (3)N (3)N (3)N (3)N (3)N (3)14-GrF30 14-RdV30 AP Cs-134**Cs-137**Co-57**Co-60*Mn-54**Sr-90 Zn-65**AP Gr-A Gr-B Vegetation Cs-1 34 Cs-137 Co-57 Co-60 Mn-54 Sr-90 Zn-65 1.91 1.34-2.48 1.76 1.23-2.29 (1)1.39 0.97-1.81 (1)1.18 0.83-1.53 (1)Bq/sample 0.606 1.77 0.53- 3.01 Bq/sample 0.7507 0.77 0.39- 1.16 Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample 5.96 5.06 11.8 7.34 8.95 1.23 8.91 6.04 4.74 10.1 6.93 8.62 1.46 7.86 4.23 -7.85 3.32-6.16 7.1 -13.1 4.85- 9.01 6.03-11.21 1.02- 1.90 5.50-10.22 A A A A A A A A A D-5 Page 95 of 140 TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)TELEDYNE BROWN ENGINEERING, 2014 (PAGE 2 OF 2)Identification Reported Known Acceptance Month/Year Number Media Nuclide* Units Value (a) Value (b) Range Evaluation (c)September 2014 14-MaW31 Water Am-241 Cs-134***Cs-1 37***Co-57***Co-60***Mn-54***Ni-63 Pu-238 Pu-239/240 K-40***Zn-65***Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L Bq/L 0.705 NR NR NR NR NR 24.07 0.591 0.0153 NR NR 0.88 0.62- 1.14 (1)18.4 12.9-23.9 24.7 17.3 -32.1 12.4 8.7- 16.1 14.0 9.8- 18.2 24.6 17.2 -32.0 0.618 0.433 -0.803 0.0048 (2)161 113-209 10.9 7.6- 14.2 14-MaS31 14-RdF 1 14-GrF31 Soil Cs- 134***Cs-137***Co-57***Co-60***Mn-54***K-40***Sr-90-7 , r.***Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg NR NR NR NR NR NR 694 In11 622 1116 779 1009 824 858 435-809 (1)781-1451 545-1013 706-1312 577-1071 601-1115 379-703 0.492 -0.914 A N (4)N (4)N (4)N (4)N (4)A A A N (4)N (4)N (4)N (4)N (4)N (4)N (4)N (4)A N (4)N (4)N (4)A LnI-UJ Oql/I1y ir% Q, I AP Sr-90 Bq/sample 0.310 0.703 September 2014 14-RdV31 AP Gr-A Gr-B Vegetation Cs-1 34 Cs-137 Co-57 Co-60 Mn-54 Sr-90 Zn-65 tqisample u.153 u.53 u.. 1- u.su Bq/sample 0.977 1.06 0.53- 1.59 Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample 7.31 8.93 10.8 6.31 7.76 0.738 7.16 7.38 8.14 9.2 6.11 7.10 0.85 6.42 5.17-9.59 5.70- 10.58 6.4- 12.0 4.28 -7.94 4.97 -9.23 0.60-1.11 4.49 -8.35 A A A A A A A The MAPEP cross check isotope list has been reduced due to duplication of effort or analysis not being performed for clients.These nuclides are no longer part of the TBE cross check program due to duplication of effort or analysis not being performed for clients. MAPEP evaluates non-reported analyses as failed if they were reported in the previous series.All future gamma cross check samples for these isotopes will be provided by Analytics.

(1) False positive test.(2) Sensitivity evaluation.

(3) Water, NI-63 overlooked when reporting, but the result of 32.7 +- 1.69 would have passed the acceptance criteria.

NCR 14-04 Water, the non-detected K-40 was overlooked when reporting, but would have passed the false positive test. NCR 14-04 AP, Sr-90 rerun was within the low range of the acceptqance criteria.

The original and rerun results were statistically the same. No cause could be identified for the slightly low Sr-90 activity.

NCR 14-04 For non reported (NR) analyses, MAPEP evaluates as failed if they were reported in the previous series. NCR 14-04 (4) AP, Sr-90 gravimetric yield was very high at 117%. Could indicate larger than normal amounts of calcium in the AP. A second fuming HNO 3 separation would be required to remove the excess calcium. NCR 14-09 AP, Gr-Alpha was counted on the wrong side. When flipped over and recounted the results were acceptable.

NCR 14-09 For non reported (NR) analyses, MAPEP evaluates as failed if they were reported in the previous series. NCR 14-09 (a) Teledyne Brown Engineering reported result.(b) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.(c) DO_/MAPEP evaluation:

A=acceptable, W=acceptable with warning, N=not acceptable.

D-6 Page 96 of 140 TABLE D-4 ERA (a) STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAMa ENVIRONMENTAL, INC., 2014 (Page 1 of 1)Concentration (pCi/L)Lab Code Date Analysis Laboratory ERA Control Result b Result c Limits Acceptance ERW-1 384 ERW-1384 ERW-1385 ERW-1385 ERW-1 385 ERW-1 385 ERW-1385 ERW-1388 ERW-1388 ERW-1 391 ERW-1 394 ERW-1 397 ERW-5382 ERW-5382 ERW-5385 ERW-5385 ERW-5385 ERW-5385 ERW-5385 ERW-5388 ERW-5388 ERW-5392 ERW-5394 ERW-5397 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 04/07/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 10/06/14 Sr-89 Sr-90 Ba-133 Co-60 Cs-134 Cs-1 37 Zn-65 Gr. Alpha Gr. Beta 1-131 Uranium H-3 Sr-89 Sr-90 Ba-1 33 Cs-134 Cs-137 Co-60 Zn-65 Gr. Alpha G. Beta 1-131 Uranium H-3 40.29 +/-24.08 +/-78.23 +/-62.75 +/-44.97 +/-88.54 +/-249.1 +/-56.70 +/-32.10 +/-25.52 +/-10.76 +/-8982 +/-5.76 2.35 3.93 3.53 3.99 4.93 10.44 2.47 1.20 1.12 0.74 279 36.70 26.50 87.90 64.20 44.30 89.10 235.0 61.00 33.00 25.70 10.20 8770 31.40 21.80 49.10 89.80 98.80 92.10 310.00 37.60 27.40 20.30 5.80 6880 27.50 19.20 74.00 57.80 35.50 80.20 212.0 31.90 21.40 21.30 7.95 7610 22.80 15.60 40.30 73.70 88.90 82.90 279.0 19.40 17.30 16.80 4.34 5940 43.60 30.90 96.70 73.10 48.70 101.00 275.0 75.80 40.70 30.30 11.80 9650 38.10 25.70 54.50 98.80 111.00 104.00 362.0 46.10 35.30 24.40 6.96 7570 Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass 29.40 +/- 5.32 19.19 +/- 1.85 43.54 +/- 4.54 81.95 +/- 7.49 95.76 +/- 5.50 90.25 +/- 2.77 327.4 +/- 23.3 30.88 +/- 8.05 20.47 +/- 4.75 19.58 +/- 2.35 5.51 +/- 0.37 6876 +/- 383 a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).b Unless otherwise indicated, the laboratory result is given as the mean +/- standard deviation for three determinations.

c Results are presented as the known values, expected laboratory precision (1 sigma, 1 determination) and control limits as provided by ERA.D-7 Page 97 of 140 TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)ENVIRONMENTAL, INC., 2014 (Page 1 of 2)Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits c Acceptance MAW-1140 02101114 Gr. Alpha MAW-1140 02/01/14 Gr. Beta 0.77 +/- 0.06 4.31 +/- 0.08 0.85 4.19 0.26 -1.44 2.10 -6.29 Pass Pass MAW-1 184 MAW-1184 MAW-1 184 MAW-I 184 MAW-1184 MAW-1184 MAW-1184 MAW-i 184 MAW-1184 MAW-1184 MAW-1184 MAW-1184 MAW-1184 MAW-1184 MAW-1184 MAVE-1 148 MAVE-1 148 MAVE-1 148 MAVE-1 148 MAVE-1 148 MAVE-1 148 MAAP-1 151 MAAP-1 151 MAAP-1 151 MAAP-1 151 MAAP-1 151 MAAP-1 151 MAAP-1 151 MAAP-1 154 MAAP-1154 MASO-1 146 MASO-1 146 MASO-1 146 MASO-1 146 MASO-1 146 MASO-1 146 MASO-1 146 MASO-1 146 MASO-1 146 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 02/01/14 Fe-55 H-3 Ni-63 Pu-238 Pu-239/240 Sr-90 U-233/234 U-238 Co-57 Co-60 Cs-1 34 Cs-137 K-40 Mn-54 Zn-65 Co-57 Co-60 Cs-134 Cs-1 37 Mn-54 Zn-65 Co-57 Co-60 Cs-1 34 Cs-1 37 Mn-54 Zn-65 Sr-90 Gr. Alpha Gr. Beta 0.40 +/- 3.20 345.10 +/- 10.60 32.40 +/- 3.20 1.28 +/- 0.12 0.91 +/- 0.10 7.00 +/- 0.70 0.20 +/- 0.07 1.25 +/- 0.18 27.86 +/- 0.38 15.99 +/- 0.27 21.85 +/- 0.54 28.74 +/- 0.49 1.80 +/- 2.00 14.06 +/- 0.40 0.00 +/- 0.19 11.63 +/- 0.19 7.28 +/- 0.18 6.29 +/- 0.29 5.18 +/- 0.20 9.22 +/- 0.26 8.59 +/- 0.40 1.60 +/- 0.05 1.38 +/- 0.08 1.75 +/- 0.11 1.81 +/- 0.10 0.01 +/- 0.03-0.24 +/- 0.09 1.11 +/- 0.14 0.00 321.00 34.00 0.83 0.68 8.51 0.23 1.45 27.50 16.00 23.10 28.90 0.00 13.90 0.00 10.10 6.93 6.04 4.74 8.62 7.86 0.00 1.39 1.91 1.76 0.00 0.00 1.18-0.01 -2.00 225.00 -417.00 23.80 -44.20 0.58 -1.08 0.47 -0.88 5.96 -11.06 0.16 -0.29 1.02 -1.89 19.30 -35.80 11.20 -20.80 16.20 -30.00 20.20 -37.60 0.00 -10.00 9.70 -18.10-0.01 -0.00 7.10 -13.10 4.85 -9.01 4.23 -7.85 3.32 -6.16 6.03 -11.21 5.50 -10.22 NA 0.97 -1.81 1.34 -2.48 1.23 -2.29 NA-0.50 -1.00 0.83 -1.53 Pass Pass Pass Fail (1)Fail (1)Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Fail (2)Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Pass Fail (4)Pass Pass Pass Pass Pass 0.56 +/- 0.06 0.98 +/- 0.06 1.77 0.77 0.53 -3.01 0.39 -1.16 Ni-63 Co-57 Co-60 Cs-134 Cs-1 37 K-40 Mn-54 Zn-65 Sr-90 4.80 +/- 15.30 1064.50 +/- 3.60 1.70 +/- 0.50 6.10 +/- 1.80 1364.30 +/- 5.30 728.90 +/- 15.90 1588.00 +/- 6.00 763.50 +/- 6.80 1.23 +/- 1.37 0.00 966.00 1.22 0.00 1238.00 622.00 1430.00 695.00 0.00 NA 676.00 -1256.00 (3)NA 867.00 -1609.00 435.00 -809.00 1001.00 -1859.00 487.00 -904.00 NA D-8 Page 98 of 140 TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)ENVIRONMENTAL, INC., 2014 (Page 2 of 2)Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits c Acceptance MASO-4439 08/01/14 Ni-63 771.62 +/- 23.29 980.00 686.00 -1274.00 Pass MASO-4439 08/01/14 Sr-90 778.34 +/- 17.82 858.00 601.00 -1115.00 Pass MASO-4439 08/01/14 Cs-134 520.60 +/- 7.09 622.00 435.00 -809.00 Pass MASO-4439 08/01/14 Co-57 1135.00 +/- 7.40 1116.00 781.00 -1451.00 Pass MASO-4439 08/01/14 Co-60 768.20 +/- 7.70 779.00 545.00 -1013.00 Pass MASO-4439 08/01/14 Mn-54 1050.70 +/- 12.60 1009.00 706.00 -1312.00 Pass MASO-4439 08/01/14 Zn-65 407.89 +/- 15.03 541.00 379.00 -703.00 Pass MAW-4431 08/01/14 Am-241 0.79 +/- 0.08 0.88 0.62 -1.14 Pass MAW-4431 08/01/14 Cs-137 18.62 +/- 0.54 18.40 12.90 -23.90 Pass MAW-4431 08/01/14 Co-57 24.85 +/- 0.42 24.70 17.30 -32.10 Pass MAW-4431 08/01/14 Co-60 12.27 +/- 0.38 12.40 8.70 -16.10 Pass MAW-4431 08/01/14 H-3 207.20 +/- 10.60 208.00 146.00 -270.00 Pass MAW-4431 08/01/14 Fe-55 55.10 +/- 14.80 31.50 22.10 -41.00 Fail (5)MAW-4431 08/01/14 Mn-54 14.36 +/- 0.53 14.00 9.80 -18.20 Pass MAW-4431 08/01/14 Zn-65 11.46 +/- 0.78 10.90 7.60 -14.20 Pass MAW-4493 08/01/14 Gr. Alpha 0.93 +/- 0.07 1.40 0.42 -2.38 Pass MAW-4493 08/01/14 Gr. Beta 6.31 +/- 1.35 6.50 3.25 -9.75 Pass MAAP-4433 08/01/14 Sr-90 0.74 +/- 0.10 0.70 0.49 -0.91 Pass MAAP-4444 08/01/14 Sr-89 7.82 +/- 0.52 9.40 6.60 -12.20 Pass MAAP-4444 08/01/14 Sr-90 0.76 +/- 0.10 0.76 0.53 -0.99 Pass MAVE-4436 08/01/14 Cs-1 34 7.49 +/- 0.18 7.38 5.17 -9.59 Pass MAVE-4436 08/01/14 Co-57 11.20 +/- 0.19 9.20 6.40 -12.00 Pass MAVE-4436 08/01/14 Co-60 6.84 +/- 0.17 6.11 4.28 -7.94 Pass MAVE-4436 08/01/14 Mn-54 8.11 +/- 0.26 7.11 4.97 -9.23 Pass MAVE-4436 08/01/14 Zn-65 7.76 +/- 0.43 6.42 4.49 -8.35 Pass a Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

b Laboratory codes as follows: MAW (water), MAAP (air filter), MASO (soil), MAVE (vegetation).

c MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive".

MAPEP does not provide control limits.(1) The high bias on the plutonium crosscheck samples was traced to contamination from a newly purchased standard.The results of reanalysis with replacement tracer purchased from NIST: MAW-1184 Pu-238 0.68 +/- 0.10 Bq / L MAW-1184 Pu-239/240 0.66 +/- 0.10 Bq / L (2) Interference from Eu-152 resulted in misidentification of Co-57.(3) Provided in the series for "sensitivity evaluation".

MAPEP does not provide control limits.(4) False positive test. Long sample counting time lead to interference from naturally occuring Bi-214 in sample matrix with a close spectral energy.(5) Result of reanalysis Fe-55 32.63 +/- 16.30 Bq/L D-9 Page 99 of 140 Intentionally left blank Page 100 of 140 APPENDIX E ERRATA DATA Page 101 of 140 Intentionally left blank Page 102 of 140 There is no errata data for 2014.Page 103 of 140 Intentionally left blank Page 104 of 140 APPENDIX F ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)Page 105 of 140 Intentionally left blank Page 106 of 140 Docket No: 50-461 CLINTON POWER STATION Annual Radiological Groundwater Protection Program Report 1 January through 31 December 2014 Prepared By Teledyne Brown Engineering Environmental Services P Exelon Generation.

Clinton Power Station Clinton, IL 61727 April 2015 Page 107 of 140 Intentionally left blank Page 108 of 140 Table Of Contents I. Sum m ary and Conclusions

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1 II. Introduction

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3 A. Objectives of the RGPP ..................................................................................

3 B. Im plementation of the Objectives

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3 C. Program Description

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4 D. Characteristics of Tritium (H-3) ......................................................................

5 Ill. Program Description

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5 A. Sam ple Analysis ..............................................................................................

5 B. Data Interpretation

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6 C. Background Analysis .......................................................................................

7 1. Background Concentrations of Tritium .................................................

7 IV. Results and Discussion

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9 A. Program Exceptions

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9 B. Program Changes .........................................................................................

9 C. Groundwater Results ....................................................................................

9 D. Surface W ater Results ..................................................................................

11 E. Precipitation W ater Results ...........................................................................

11 F. Recapture

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11 G. Summary of Results -Inter-laboratory Comparison Program ......................

12 H. Leaks, Spills, and Releases ...........................................................................

12 I. Trends ............................................................................................................

12 J. Investigations

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12 K. Actions Taken ................................................................................................

12 Page 109 of 140 Appendices Appendix A Tables Table A-1 Location Designation of the Annual Radiological Groundwater Protection Program Report (ARGPPR)Radiological Groundwater Protection Program -Sampling Locations, Clinton Power Station, 2014 Routine Well Water and Surface Water Sample Locations for the Radiological Groundwater Protection Program, Clinton Power Station, 2014 Figures Appendix B Tables Table B-1.1 Table B-1.2 Table B-1.3 Table B-11.1 Table B-11.2 Table B-111.1 Data Tables of the Annual Radiological Groundwater Protection Program Report (ARGPPR)Concentrations of Tritium, Strontium, Gross Alpha, and Gross Beta in Groundwater Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Groundwater Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Hard-To-Detects in Groundwater Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2014.Concentrations of Tritium in Precipitation Water Samples Collected in the Vicinity of Clinton Power Station, 2014.ii Page I 10 of 140 I. Summary and Conclusions In 2006, Exelon instituted a comprehensive program to evaluate the impact of station operations on groundwater and surface water in the vicinity of Clinton Power Station (CPS). This evaluation involved numerous station personnel and contractor support personnel.

This report covers groundwater and surface water samples, collected outside of the Licensee required Off-Site Dose Calculation Manual (ODCM) requirements, both on and off station property in 2014. During that time period, 607 analyses were performed on 104 samples from 32 locations.

The monitoring was conducted in four phases.In assessing all the data gathered for this report, it was concluded that the operation of CPS had no adverse radiological impact on the environment, and there are no known active releases into the groundwater or surface water at CPS. No program changes occurred during the sampling year of 2014.Gamma-emitting radionuclides associated with licensed plant operations were not detected at concentrations greater than their respective Lower Limits of Detection (LLDs) as specified in NUREG-1 302 in any of the groundwater or surface water samples. In the case of tritium, Exelon specified that the independent laboratory achieve a lower limit of detection 10 times lower than that required by the United States Environmental Protection Agency (USEPA)regulation.

Strontium-89 was not detected in any samples above the LLD of 10 pCi/L.Strontium-90 was not detected in any samples above the LLD of 1 pCi/L.Tritium was not detected in any of the groundwater, surface water, or precipitation water samples at concentrations greater than the United States Environmental Protection Agency (USEPA) drinking water standard (and the Nuclear Regulatory Commission Reporting Limit) of 20,000 pCi/L. Background levels of tritium were detected at concentrations greater than the self-imposed LLD of 200 pCi/L in two of 17 groundwater monitoring locations.

The tritium concentrations ranged from 182 +/- 119 pCi/L to 257 +/- 132 pCi/L. Tritium was not detected in any surface water or precipitation water.Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions were performed on groundwater samples during the third quarter of sampling in 2014. Gross Alpha (dissolved) was not detected at any of the groundwater locations.

Gross Alpha (suspended) was not detected at any of the groundwater locations.

Gross Beta (dissolved) was detected in 15 of 17 groundwater locations.

The concentrations ranged from 1.1 to 10.0 pCi/L. Gross Beta (suspended) was not detected at any of the groundwater locations. Page III of 140 Hard-To-Detect analyses were performed on two groundwater locations.

The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235 and U-238. All hard-to-detect nuclides analyzed were not found at concentrations greater than their respective MDCs.-2-Page 112 of 140 II. Introduction The Clinton Power Station (CPS), consisting of one approximately 1,140 MW gross electrical power output boiling water reactor is located in Harp Township, DeWitt County, Illinois.

CPS is owned and operated by Exelon and became operational in 1987. Unit No. 1 went critical on 15 February 1987. The site encloses approximately 13,730 acres. This includes the 4,895 acre, man-made cooling lake and about 452 acres of property not owned by Exelon. The plant is situated on approximately 150 acres. The cooling water discharge flume, which discharges to the eastern arm of the lake, occupies an additional 130 acres.Although the nuclear reactor, supporting equipment and associated electrical generation and distribution equipment lie in Harp Township, portions of the aforementioned 13,730 acre plot reside within Wilson, Rutledge, DeWitt, Creek, Nixon and Santa Anna Townships.

This report covers those analyses performed by Teledyne Brown Engineering (TBE) on samples collected in 2014.A. Objectives of the Radiological Groundwater Protection Program (RGPP)The long-term objectives of the RGPP are as follows: 1. Identify suitable locations to monitor and evaluate potential impacts from station operations before significant radiological impact to the environment and potential drinking water sources.2. Understand the local hydrogeologic regime in the vicinity of the station and maintain up-to-date knowledge of flow patterns on the surface and shallow subsurface.

3. Perform routine water sampling and radiological analysis of water from selected locations.

4. Report new leaks, spills, or other detections with potential radiological significance to stakeholders in a timely manner.5. Regularly assess analytical results to identify adverse trends.6. Take necessary corrective actions to protect groundwater resources.

B. Implementation of the Objectives The objectives identified have been implemented at Clinton Power Station as discussed below:-3-Page 113 of 140

1. Exelon and its consultant identified locations as described in the Phase 1 study. Phase 1 studies were conducted by Connestoga Rovers and Associates (CRA) and the results and conclusions were made available to state and federal regulators as well as the public in station specific reports.2. The Clinton Power Station reports describe the local hydrogeologic regime. Periodically, the flow patterns on the surface and shallow subsurface are updated based on ongoing measurements.

3. Clinton Power Station will continue to perform routine sampling and radiological analysis of water from selected locations.

4. Clinton Power Station has implemented new procedures to identify and report new leaks, spills, or other detections with potential radiological significance in a timely manner.5. Clinton Power Station staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.C. Program Description 1 .Sample Collection Sample locations can be found in Table A-1 and Figures A-I, A-2, A-3, and A-4 Appendix A.Groundwater, Surface Water and Precipitation Water Samples of water are collected, managed, transported and analyzed in accordance with approved procedures following regulatory methods. Groundwater, surface water, and precipitation water are collected.

Sample locations, sample collection frequencies and analytical frequencies are controlled in accordance with approved station procedures.

Contractor and/or station personnel are trained in the collection, preservation management, and shipment of samples, as well as in documentation of sampling events. Analytical laboratories are subject to internal quality assurance programs and inter-laboratory cross-check programs, as well as nuclear industry audits. Station personnel review and evaluate all analytical data deliverables after initial review by the contractor.

Analytical data results are reviewed by both station personnel and an independent hydrogeologist for adverse trends or changes to-4-Page 114 of 140 hydrogeologic conditions.

D. Characteristics of Tritium (H-3)Tritium (chemical symbol H-3) is a radioactive isotope of hydrogen.

The most common form of tritium is tritium oxide, which is also called "tritiated water." The chemical properties of tritium are essentially those of ordinary hydrogen.Tritiated water behaves the same as ordinary water in both the environment and the body. Tritium can be taken into the body by drinking water, breathing air, eating food, or absorption through skin. Once tritium enters the body, it disperses quickly and is uniformly distributed throughout the body. Tritium is excreted primarily through urine with a clearance rate characterized by an effective biological half-life of about 14 days. Within one month or so after ingestion, essentially all tritium is cleared. Organically bound tritium (tritium that is incorporated in organic compounds) can remain in the body for a longer period.Tritium is produced naturally in the upper atmosphere when cosmic rays strike air molecules.

Tritium is also produced during nuclear weapons explosions, as a by-product in reactors producing electricity, and in special production reactors, where the isotopes lithium-7 and/or boron-10 are activated to produce tritium. Like normal water, tritiated water is colorless and odorless.

Tritiated water behaves chemically and physically like non-tritiated water in the subsurface, and therefore tritiated water will travel at the same velocity as the average groundwater velocity.Tritium has a half-life of approximately 12.3 years. It decays spontaneously to helium-3 (3He). This radioactive decay releases a beta particle (low-energy electron).

The radioactive decay of tritium is the source of the health risk from exposure to tritium. Tritium is one of the least dangerous radionuclides because it emits very weak beta radiation and leaves the body relatively quickly. Since tritium is almost always found as water, it goes directly into soft tissues and organs. The associated dose to these tissues is generally uniform and is dependent on the water content of the specific tissue.Ill. Program Description A. Sample Analysis This section describes the general analytical methodologies used by TBE to analyze the environmental samples for radioactivity for the Clinton-5-Page 115 of 140 Power Station RGPP in 2014.In order to achieve the stated objectives, the current program includes the following analyses: 1. Concentrations of gamma emitters in groundwater and surface water.2. Concentrations of strontium in groundwater.

3. Concentrations of tritium in groundwater, surface water and precipitation water.4. Concentrations of gross alpha and gross beta in groundwater.

5. Concentrations of Am-241 in groundwater.

6. Concentrations of Cm-242 and Cm-243/244 in groundwater.

7. Concentrations of Pu-238 and Pu-239/240 in groundwater.

8. Concentrations of U-234, U-235 and U-238 in groundwater.

9. Concentrations of Fe-55 in groundwater.

10. Concentrations of Ni-63 in groundwater.

B. Data Interpretation The radiological data collected prior to Clinton Power Station becoming operational were used as a baseline with which these operational data were compared.

For the purpose of this report, Clinton Power Station was considered operational at initial criticality.

Several factors were important in the interpretation of the data: 1. Lower Limit of Detection and Minimum Detectable Concentration The lower limit of detection (LLD) is specified by federal regulation as a minimum sensitivity value that must be achieved routinely by the analytical parameter.

2. Laboratory Measurements Uncertainty The estimated uncertainty in measurement of tritium in environmental samples is frequently on the order of 50% of the-6-Page 116 of 140 measurement value.Statistically, the exact value of a measurement is expressed as a range with a stated level of confidence.

The convention is to report results with a 95% level of confidence.

The uncertainty comes from calibration standards, sample volume or weight measurements, sampling uncertainty and other factors. Exelon reports the uncertainty of a measurement created by statistical process (counting error) as well as all sources of error (Total Propagated Uncertainty or TPU). Each result has two values calculated.

Exelon reports the TPU by following the result with plus or minus +/- the estimated sample standard deviation, as TPU, that is obtained by propagating all sources of analytical uncertainty in measurements.

Analytical uncertainties are reported at the 95% confidence level in this report for reporting consistency with the AREOR.Gamma spectroscopy results for each type of sample were grouped as follows: For groundwater and surface water 13 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-134, Cs-137, Ba-140 and La-140 were reported.C. Background Analysis A pre-operational radiological environmental monitoring program (pre-operational REMP) was conducted to establish background radioactivity levels prior to operation of the Station. The environmental media sampled and analyzed during the pre-operational REMP were atmospheric radiation, fall-out, domestic water, surface water, marine life, milk, and vegetation.

The results of the monitoring were detailed in the report entitled, Environmental Radiological Monitoring for Clinton Power Nuclear Power Station, Illinois Power Company, Annual Report 1987, May 1988.The pre-operational REMP contained analytical results from samples collected from the surface water and groundwater.

1. Background Concentrations of Tritium The purpose of the following discussion is to summarize background measurements of tritium in various media performed by others.-7-Page 117 of 140

a. Tritium Production Tritium is created in the environment from naturally occurring processes both cosmic and subterranean, as well as from anthropogenic (i.e., man-made) sources. In the upper atmosphere, "Cosmogenic" tritium is produced from the bombardment of stable nuclides and combines with oxygen to form tritiated water, which will then enter the hydrologic cycle. Below ground, "lithogenic" tritium is produced by the bombardment of natural lithium present in crystalline rocks by neutrons produced by the radioactive decay of naturally abundant uranium and thorium. Lithogenic production of tritium is usually negligible compared to other sources due to the limited abundance of lithium in rock. The lithogenic tritium is introduced directly to groundwater.

A major anthropogenic source of tritium and strontium-90 comes from the former atmospheric testing of thermonuclear weapons. Levels of tritium in precipitation increased significantly during the 1950s and early 1960s, and later with additional testing, resulting in the release of significant amounts of tritium to the atmosphere.

The Canadian heavy water nuclear power reactors, other commercial power reactors, nuclear research and weapons production continue to influence tritium concentrations in the environment.

b. Precipitation Data Precipitation samples are routinely collected at stations around the world for the analysis of tritium and other radionuclides.

Two publicly available databases that provide tritium concentrations in precipitation are Global Network of Isotopes in Precipitation (GNIP) and USEPA's RadNet database.

GNIP provides tritium precipitation concentration data for samples collected world wide from 1960 to 2006.RadNet provides tritium precipitation concentration data for samples collected at stations through out the U.S. from 1960 up to and including 2006. Based on GNIP data for sample stations located in the U.S. Midwest, tritium concentrations peaked around 1963. This peak, which approached 10,000 pCi/L for some stations, coincided with the atmospheric testing of thermonuclear weapons. Tritium concentrations in surface water showed a sharp decline up until 1975, followed by a gradual decline since that time. Tritium concentrations in Midwest precipitation have typically been-8-Page 118 of 140 below 100 pCi/L since around 1980. Tritium concentrations in wells may still be above the 200 pCi/L detection limit from the external causes described above.c. Surface Water Data Tritium concentrations are routinely measured in Clinton Lake.According to the USEPA, surface water data typically has an uncertainty

+/- 70 to 100 pCi/L 95% confidence bound on each given measurement.

Therefore, the typical background data provided may be subject to measurement uncertainty of approximately

+/- 70 to 100 pCi/L.The radio-analytical laboratory is counting tritium results to an Exelon specified LLD of 200 pCi/L. Typically, the lowest positive measurement will be reported within a range of 40 -240 pCi/L or 140 +/- 100 pCi/L. Clearly, these sample results cannot be distinguished as different from background at this concentration.

IV. Results and Discussion A. Program Exceptions

1. Sample Anomalies There were no samples anomalies in 2014.2. Missed Samples There were no missed samples in 2014.B. Program Changes There were no sampling program changes in 2014.C. Groundwater Results Groundwater Baseline samples were collected from off-site wells during four (4)phases at the station. Analytical results are discussed below. No-9-Page 119 of 140 anomalies were noted during the year.Tritium Samples from 17 locations were analyzed for tritium activity (Table B-1.1 Appendix B). Tritium values ranged from below the Exelon imposed LLD of 200 pCi/I to 257 pCi/l.Strontium Strontium-89 was not detected in any of the 17 samples analyzed and the required LLD of 10 pCi/L was met. Strontium-90 was also not detected in any of the 17 samples analyzed and the required LLD of 1 pCi/L was met. (Table B-1.1 Appendix B).Gross Alpha and Gross Beta (dissolved and suspended)

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions were performed on groundwater samples during the third quarter of sampling in 2014. Gross Alpha (dissolved) was not detected at any of the groundwater locations.

Gross Alpha (suspended) was not detected at any of the groundwater locations.

Gross Beta (dissolved) was detected in 15 of 17 groundwater locations.

The concentrations ranged from 1.1 to 10.0 pCi/L. Gross Beta (suspended) was not detected at any of the groundwater locations (Table B-1.1 Appendix B).Gamma Emitters Naturally occurring K-40 was detected in one sample at a concentration of 43 pCi/L. No other gamma emitting nuclides were detected (Table B-1.2, Appendix B).Hard-To-Detect Hard-To-Detect analyses were performed on two groundwater locations to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu-238, Pu-239/240, U-234, U-235, and U-238. All hard-to-detect nuclides were not detected at concentrations greater than their respective MDCs.Occasionally, the isotopes of U-234 and U-238 are detected at low levels and indistinguishable from background (Table B-1.3 Appendix B).-10-Page 120 of 140 D. Surface Water Results Surface Water Baseline samples were collected from on-site surface waters during four (4) phases at the station. Analytical results are discussed below. No anomalies were noted during the year.Tritium Samples from seven locations were analyzed for tritium activity (Table B-11.1 Appendix B). Tritium was not detected at concentrations greater than the LLD.Strontium Strontium was not analyzed in 2014 (Table B-11.1 Appendix B).Gamma Emitters No gamma emitting nuclides were detected (Table B-I1.2, Appendix B).E. Precipitation Water Results Precipitation Water Precipitation water samples were collected during the third quarter of 2014. Analytical results are discussed below. No anomalies were noted during the year.Tritium Tritium was not detected at concentrations greater than the LLD (Table B-Ill.1 Appendix B).F. Recapture Clinton Power Station conducted recapture precipitation sampling and analysis per the Radiological Groundwater Protection Program. No consistent indication of recapture was identified. Page 121 of 140 G. Summary of Results -Inter-Laboratory Comparison Program Inter-Laboratory Comparison Program results for TBE are presented in the Annual Radiological Environmental Operating Report.H. Leaks, Spills, and Releases No leaks, spills or releases were identified during the year.Trends The historic low level tritium activity detected at MW-CL-14S and MW-CL-21 S has continued to decrease over the course of 2014. All sampling well locations are currently indicating tritium levels less than the required LLD of 200 pCi/I. All wells will continue to be sampled in accordance with the RGPP.J. Investigations Currently no investigations are on-going.K. Actions Taken 1. Compensatory Actions There have been no station events requiring compensatory actions at the Clinton Power Station in 2014.2. Installation of Monitoring Wells No new wells were installed during the 2014.3. Actions to Recover/Reverse Plumes No actions were required to recover or reverse groundwater plumes.-12-Page 122 of 140 APPENDIX A LOCATION DESIGNATION OF THE ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)Page 123 of 140 Intentionally left blank Page 124 of 140 TABLE A-1: Radiological Groundwater Protection Program -Sampling Locations, Clinton Power Station, 2014 Site Site Type B-3 MW-CL-i MW-CL-2 MW-CL-121 MW-CL-131 MW-CL-13S MW-CL-14S MW-CL-151 MW-CL-15S MW-CL-16S MW-CL-17S MW-CL-181 MW-CL-18S MW-CL-19S MW-CL-20S MW-CL-21S MW-CL-22S Sewage Treatment Plant SW-CL-1 SW-CL-2 SW-CL-4 SW-CL-5 SW-CL-6 SW-CL-7 RG-2 RG-3 RG-15 RG-26 RG-N RG-NE RG-NNE MPT-1 Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Surface Water Surface Water Surface Water Surface Water Surface Water Surface Water Surface Water Precipitation Water Precipitation Water Precipitation Water Precipitation Water Precipitation Water Precipitation Water Precipitation Water Precipitation Water A-I Page 125 of 140 0 20D 400 Figure A-i1 Onsite Sampling Locations at Clinton Power Station

~*1 K IZ, N~swcL-4 h~~O-2 <~N *I/I V 1 / v~-~-'N"\2 7/V/4 0*/ 'N N. ",N ,N o\7 100 to 200 /"-iPet7/N N 7'N N J/'N Figure A -2 Sampling Locations South of Clinton Power Station (51 SM4XIG ,_r 0 100 23O Figure A -3 Sampling Locations East of Clinton Power Station 0 RG-15 0 RG-2 RG-3 Figure A -4 Recapture Sampling Locations of Clinton Power Station A-5 Page 129 of 140 Intentionally left blank Page 130 of 140 APPENDIX B DATA TABLES OF THE ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)Page 131 of 140 Intentionally left blank Page 132 of 140 TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA COLLECTION SITE B-3 B-3 B-3 B-3 MW-CL-1 MW-CL-1 MW-CL-1 MW-CL-1 MW-CL-121 MW-CL-121 MW-CL-121 MW-CL-121 MW-CL-131 MW-CL-131 MW-CL-131 MW-CL-131 MW-CL-13S MW-CL-13S MW-CL-13S MW-CL-13S MW-CL-14S MW-CL-14S MW-CL- 14S MW-CL-14S MW-CL-151 MW-CL-151 MW-CL-151 MW-CL-151 MW-CL-15S MW-CL-15S MW-CL-15S MW-CL-15S MW-CL-16S MW-CL- 16S MW-CL- 16S MW-CL-16S MW-CL-17S MW-CL-17S MW-CL-17S MW-CL-17S MW-CL-181 MW-CL-181 MW-CL-181 MW-CL-181 MW-CL-18S MW-CL-18S MW-CL-18S MW-CL-1 8S MW-CL-19S MW-CL-19S MW-CL-19S MW-CL-19S DATE 02/25/14 05/19/14 08/18/14 10/27/14 02/25/14 05/19/14 08/18/14 10/27/14 02/25/14 05/19/14 08/18/14 10/27/14 02/25/14 05/19/14 08/18/14 10/27/14 02/25/14 05/19/14 08/18/14 10/27/14 02/24/14 05/20/14 08/19/14 10/28/14 02/25/14 05/19/14 08/18/14 10/27/14 02/25/14 05/19/14 08/18/14 10/27/14 02/24/14 05/20/14 08/19/14 10/28/14 02/24/14 05/20/14 08/19/14 10/28/14 02/24/14 05/20/14 08/19/14 10/28/14 02/24/14 05/20/14 08/19/14 10/28/14 02/25/14 05/19/14 08/18/14 10/27/14 H-3< 192< 176< 160< 188< 193< 176< 159< 190< 195< 176< 173< 192< 192< 174< 173< 191< 193< 172< 175< 191< 195< 175 182 +/- 119 257 +/- 132< 191< 174< 174< 193< 192< 171< 173< 192< 192< 172< 173< 191< 191< 171< 176< 191< 191< 175< 173< 159< 191< 176< 173< 161< 192< 171< 174< 155 Sr-89 Sr-90 Gr-A (Dis) Gr-A (Sus) Gr-B (Dis) Gr-B (Sus)<3.4 <0.5 <1.1<6.8 <0.8 <1.5<5.7 <0.9 <1.1< 4.4 < 0.6 < 0.7<5.3 <0.8 <0.7< 3.6<0.7 <1.3< 5.4 < 0.7 < 0.7< 6.0 < 0.9 < 0.6<5.0 <0.8 <1.1<6.5 <1.0 <1.4<6.6 <0.8 <1.0< 6.2 < 0.8 < 1.7<5.3 <0.9 <3.0< 0.4< 0.4< 0.4< 0.4< 0.4< 1.1< 1.1< 1.1<1.1< 1.1< 1.1< 0.7< 0.7 2.3 +/- 1.1 < 1.5 2.6 +/- 1.1 < 1.5 3.3 +/- 1.1 < 1.5 2.8 +/- 1.1 < 1.5 1.7 +/- 1.0 < 1.5 10.0 +/- 1.5 < 1.4 2.0 +/- 1.0 < 1.4 1.1 +/- 0.7 < 1.4 5.9 +/- 1.2 < 1.4 1.8 +/- 1.1 < 1.4 3.7 +/- 1.1 < 1.4 4.2 +/- 1.4 < 1.6 3.2 +/- 1.5 < 1.6 Page 133 of 140 B-I TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA COLLECTION DATE SITE H-3 Sr-89 Sr-90 Gr-A (Dis) Gr-A (Sus) Gr-B (Dis) Gr-B (Sus)MW-CL-2 MW-CL-2 MW-CL-2 MW-CL-2 MW-CL-20S MW-CL-20S MW-CL-20S MW-CL-20S MW-CL-21S MW-CL-21S MW-CL-21S MW-CL-21S MW-CL-22S MW-CL-22S MW-CL-22S MW-CL-22S 02/25/14 05/19/14 08/18/14 10/27/14 02/25/14 05/19/14 08/18/14 10/27/14 02/25/14 05/19/14 08/18/14 10/27/14 02/24/14 05/20/14 08/19/14 10/28/14< 193< 174< 162< 191< 192< 174< 170< 161 202 +/- 130< 178< 5.5 < 0.7 < 1.0< 5.8 < 1.0 < 1.1< 0.4< 0.7< 0.7< 0.7< 1.5< 1.5 3.0 +/- 1.2 < 1.6 240 +/- 121 < 5.4< 184< 192< 175< 0.9 < 0.8< 1.6< 1.6< 172< 182< 6.2 < 1.0 < 1.7 8.7 +/- 1.4 < 1.6 B-2 Page 134 of 140 Table B-I.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- SIGMA SITE COLLECTION Be-7 DATE K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 B-3 08/18/14 MW-CL-1 08/18/14 MW-CL-121 08/18/14 MW-CL-131 08/18/14 MW-CL-1 3S 08/18/14 MW-CL-14S 02/24/14 MW-CL-14S 08/19/14 MW-CL-151 08/18/14 MW-CL-1 5S 08/18/14 MW-CL-16S 08/19/14 MW-CL-17S 08/19/14 MW-CL-181 08/19/14 MW-CL-18S 08/19/14 MW-CL-19S 08/18/14 MW-CL-2 08/18/14 MW-CL-20S 08/18/14 MW-CL-21S 02/25/14 MW-CL-21S 08/18/14 MW-CL-21S 10/27/14 MW-CL-22S 08/19/14< 35 < 30 < 3<44 <85 <4< 38 < 38 < 4< 30 < 32 < 3< 36 < 68 < 3< 37 < 67 < 4< 27 43 26 < 3< 35 < 67 < 4< 35 < 29 < 3< 32 < 62 < 3< 36 < 35 < 4< 39 < 62 < 3< 40 < 75 < 4< 33 < 28 < 3< 39 < 69 < 4< 26 <61 < 3< 41 < 30 < 4< 38 < 75 < 3< 23 < 21 < 2< 40 < 38 < 4<4 <8<4 <9<5 <11<4 <9<4 <9<4 <8<3 <6<4 <9<4 <8<3 <6<4 <7<4 <10<5 <10<3 <8<4 <8<3 <6<4 <9<4 <8<2 <6<4 <10<4 <9<4 <8<4 <9<4 <7<4 <7<4 <7<2 <5<4 <7<3 <7<3 <6<4 <8<5 <8<4 <8<3 .<6<4 <7<3 <5<4 <9<3 <7<2 <5<3 <8<4 <7<5 <8<5 <8<4 <6<4 <7<4 <7<3 <5<4 <6<3 <6<3 <6<4 <8<4 <8<5 <7<3 <6<5 <8<3 <5<4 <8<4 <7<3 <5<5 <8<3 <4 <27 <7<4 <4 <32 <10<4 <5 <31 <11<3 <3 <25 <8<4 <4 <30 <7<4 <4 <31 <7<3 <3 <20 <6<3 <4 <27 <11<3 <3 <24 <8<3 <3 <21 <6<4 <4 <29 <8<4 <3 <32 <9<4 <4 <31 <8<3 <3 <24 <7<4 <4 <29 <9<3 <3 <22 <8<4 <4 <31 <9<4 <4 <28 <9<2 <2 <18 <5<4 <5 <31 <9 0 LA 0 TABLE B-I.3 CONCENTRATIONS OF HARD TO DETECTS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA Am-241 Cm-242 Cm-243/244 Pu-238 Pu-239/240 U-234 U-235 U-< 0.03 < 0.03 < 0.14 < 0.03 < 0.05 < 0.03 < 0.04 < 0< 0.18 < 0.07 < 0.18 < 0.05 < 0.11 < 0.02 < 0.04 < 0 SITE MW-CL- 14S MW-C L-21S COLLECTION DATE 08/19/14 08/18/14 238.05.07 Fe-55* 184* 167 Ni-63< 4.8 iTq U., CD TABLE B-11.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/-2 SIGMA COLLECTION SITE DATE H-3 SW-CL-i 02/25/14 < 192 SW-CL-I 05/19/14 < 174 SW-CL-i 08/18/14 < 171 SW-CL-i 10/27/14 < 162 SW-CL-2 02/25/14 < 192 SW-CL-2 05/19/14 < 173 SW-CL-2 08/18/14 < 171 SW-CL-2 10/27/14 < 162 SW-CL-4 03/26/14 < 170 SW-CL-4 05/19/14 < 172 SW-CL-4 08/18/14 < 174 SW-CL-4 10/27/14 < 164 SW-CL-5 03/26/14 < 169 SW-CL-5 05/19/14 < 174 SW-CL-5 08/18/14 < 175 SW-CL-5 10/27/14 < 163 SW-CL-6 03/26/14 < 168 SW-CL-6 05/19/14 < 177 SW-CL-6 08/18/14 < 160 SW-CL-6 10/27/14 < 184 SW-CL-7 02/25/14 < 193 SW-CL-7 05/19/14 < 175 SW-CL-7 08/18/14 < 161 SW-CL-7 10/27/14 < 163 SEWAGE TREATMENT PLANT 02/25/14 < 196 SEWAGE TREATMENT PLANT 05/19/14 < 173 SEWAGE TREATMENT PLANT 08/18/14 < 158 SEWAGE TREATMENT PLANT 10/27/14 < 156 B-5 Page 137 of 140 Table B-II.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- SIGMA SITE COLLECTION Be-7 DATE CL-SW-CL-1 08/18/14 < 39 CL-SW-CL-2 08/18/14 < 36 CL-SW-CL-4 08/18/14 < 38 CL-SW-CL-5 08/18/14 < 33 CL-SW-CL-6 08/18/14 < 34 CL-SW-CL-7 08/18/14 < 29 SEWAGE TREATMENT PLANT 08/18/14 < 27 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140< 38< 39< 68< 58< 24< 57< 23<4<3<3<3<3<3<2<4<4<4<4<3<3<3<8<8<10<8<8<7<7<4<3<5<3<3<3<3<8<6<7<7<7<6<5<3<4<4<4<3<3<3<7<7<7<7<7<6<5<4<4<4<3<3<3<3<4<4<4<3<3<3<3< 30* 27* 28< 28< 25< 23< 22<9<8< 10<8<9<7<8 (10 00 C 0 TABLE B-l1l.1 CONCENTRATIONS OF TRITIUM IN PRECIPITATION WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2014 RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA COLLECTION DATE SITE H-3 MPI-1 RG-15 RG-2 RG-26 RG-3 RG-N RG-NE RG-NNE 07UI3/14 07/03/14 07/03/14 07/03/14 07/03/14 07/03/14 07/03/14 07/03/14< 163< 166< 165< 167< 163< 167< 165< 164 B-7 Page 139 of 140 Intentionally left blank Page 140 of 140

U-604210, 2014 Annual Radiological Environmental Operating Report

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