Text

Clinton Power Station 2013 Annual Radiological Environmental Operating Report
	ML14127A019
Person / Time
Site:	Clinton
Issue date:	04/24/2014
From:	Taber B K; Exelon Generation Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	U-604172
	Download: ML14127A019 (144)
	v • d • e

o Exeton Generation.

Clinton Power Station8401 Power RoadClinton, IL 61727U-604172April 24, 2014U.S. Nuclear Regulatory Commission ATTN: Document Control DeskWashington, DC 20555Clinton Power Station, Unit 1Facility Operating License No. NPF-62NRC Docket No. 50-461

Subject:

Clinton Power Station 2013 Annual Radiological Environmental Operating ReportExelon Generating

Company, LLC (Exelon),

Clinton Power Station is submitting the 2013Annual Radiological Environmental Operating Report. This report is submitted in accordance with Technical Specification 5.6.2, "Annual Radiological Environmental Operating Report,"and covers the period from January 1, 2013 through December 31, 2013.This reports provides the results of the Radiological Environmental Monitoring Program asspecific 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, at217-937-3200.

Respectfully, B. Keith TaberSite Vice President Clinton Power StationDRA/blfAttachment cc: Regional Administrator

-NRC Region IIINRC Senior Resident Inspector

-Clinton Power StationOffice of Nuclear Facility Safety -Illinois Emergency Management AgencyI

Intentionally left blank Docket No: 50-461CLINTON POWER STATIONAnnual Radiological Environmental Operating Report1 January Through 31 December 2013Prepared ByTeledyne Brown Engineering Environmental ServicesSExelon Generation.

Clinton Power StationClinton, IL 61727April 2014 I-tIntentionally left blank Table Of ContentsI. Sum mary and Conclusions

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1I1. Introduction

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

3B. Im plementation of the Objectives

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3I1l. Program Description

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4A. Sam ple Collection

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4B. Sam ple Analysis

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6C. Data Interpretation

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6D. Program Exceptions

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

12IV. Results and Discussion

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12A. Aquatic Environment

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121. Surface W ater .....................................................................................

122. Drinking W ater ..................................................................................

133. W ell W ater ..............................

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134. Fish .....................................................................................................

145. Sediment

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14B. Atmospheric Environment

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151. Airborne

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15a. Air Particulates

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

162. Terrestrial

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

16b. Food Products

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

17C. Am bient Gam ma Radiation

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

18E. Errata Data ..................................................................................................

19F. Summary of Results -Inter-laboratory Comparison Program ......................

19V. References

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22 IIIIAppendices Appendix ARadiological Environmental

-Monitoring.

Report SummaryTablesTable A-1 Radiological Environmental Monitoring Program Annual Summary forthe Clinton Power Station, 2013Appendix BTablesTable B-1Table B-2FiguresFigure B-1Figure B-2Figure B-3Figure B-4Appendix CTablesTable C-1.1Table C-1.2Table C-1.3Table C-I1.1.Location Designation,'Distance

& Direction, and Sample Collection

&Analytical Methods,Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, Clinton Power Station, 2013Radiological Environmental Monitoring Program -Summary of SampleCollection, Clinton Power Station, 2013Environmental.

Sampling Locations Within One Mile of the ClintonPower Station; 2013Environmental Sampling Locations Between One and Two Miles fromthe Clinton Power Station, 2013Environmental Sampling Locations Between Two and Five Miles fromthe Clinton Power Station, 2013Environmental Sampling Locations Greater Than Five Miles from the.Clinton Power Station, 2013Data Tablesand Figures -Primary Laboratory Concentrations of 1-131 in Surface Water Samples Collected in theVicinity of Clinton Power Station, 2013.Concentrations of Tritium in Surface Water SamplesCollected in .theVicinity of Clinton Power Station, 2013.Concentrations of Gamma Emitters in Surface Water SamplesCollected in the Vicinity of Clinton Power Station.

2013.Concentrations of Gross Beta in Drinking Water Samples Collected inthe Vicinity of Clinton Power Station, 2013..iiIUIIaIUIIIIII Table C-11.2Table C-11.3Table C-11.4Table d-111.1Table C-111.2Table C-IV.1Table C-V. 1Table C-VI.1Table C-VI.2Table C-VI.3Table C-VII.1Table C-VIII.1Table C-VII1.2Table C-IX.1Table C-IX.2Table C-X.1Table C-X.2Table C-X.32Concentrations of Tritium in Drinking Water Samples Collected in theVicinity of Clinton Power Station, 2013.Concentrations of 1-131 in Drinking Water Samples Collected in theVicinity of Clinton Power Station, 2013.Concentrations of Gamma Emitters in Drinking Water SamplesCollected in the Vicinity of Clinton Power Station, 2013.Concentrations o f Tritium in Well Water Samples Collected in the-Vicinity of Clinton Power Station, 2013:Concentrations of Gamma Emitters in Ground Water SamplesCollected in the Vicinity.;of Clinton Power Station, 2013.Concentrations of Gamma Emitters in, Fish Samples Collected in theVicinity of Clinton Power Station, 2013.Concentrations of Gamma Emitters in Sediment Samples Collected inthe Vicinity of Clinton'Power

Station, 2013.Concentrations of Gross Beta in Air Particulate Samples Collected inthe Vicinity of Clinton' Power Statiorh,201*3...":-

Monthly and Yearly Mean Values of Gross Beta Concentrations (E-3pCi/cu. meter) in Air Particulate Samples Collected in the Vicinity ofClinton Power Station, 2013.Concentrations of Gamma Emitters in. Air.Particulate SamplesCollected in the Vicinity of Clinton Power Station, 2013.Concentrations of 1-131 in Air Iodine Samp!es.

Collected in the Vicinityof Clinton Power Station, 2013.Concentrations of 1-131 in- Milk Samples Collected.

in the Vicinity ofClinton Power Station, 2013.Concentrations of Gamma Emitters:in Milk Samples Collected in theVicinity of Clinton Power Station, 2013.Concentrations of GammaEmitters in Vegetation Samples Collected in the Vicinity of Clinton Power Station, 2013.Concentrations of Gamma Emitters in Grass Samples Collected in theVicinity of Clinton %Power.Station, 201.3.Quarterly OSLD Results for Clinton Power Station, 2013.Mean Quarterly OSLD Results for the Inner:Ring,:

Outer Ring, SpecialInterest and Control Locations for Clinton Power Station, 2013.'"Summary of the Ambient Dosimetry Program for Clinton PowerStation, 2013.iii Fi-guresFigure C-1 Mean Monthly Gross Beta Concentrations in Air Particulate SamplesCollected in the Vicinity of CPS, 2013.Figure C-2 Mean Quarterly-Ambient Gamma Radiation Levels (OSLD) in theVicinity of CPS, 2013.Appendix D Inter-Laboratory Comparison Program -TablesTableD-l Analytics Environmental Radibactivity Cross Check ProgramTeledyne Brown Engineering, 2013Table D-2 ERA Environmental Radioactivity Cross Check ProgramTeledyne Brown Engineering,,2013 Table D-3

DOE's Mixed Analyte.

Performance.

Evaluation Program (MAPEP)Teledne Brown Engineering, 2013Appendix E Errata DataAppendix.F Annual Radiological Groundwater Protection Program Report(ARGPPR)iv 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 2013 through 31 December 2013.During that time period, 1,596 analyses were performed on 1,468 samples.

Inassessing all the data gathered for this report and comparing these results withpreoperational data, it was, concluded that the operation of CPS had no adverseradiological impact on the environment.

There were zero (0) radioactive liquid releases from CPS during 2013.Releases of gaseous radioactive materials were accurately measured in planteffluents.

There were no gaseous effluent releases that approached the limitsspecified in the CPS Offsite Dose Calculation Manual (ODCM). The highestcalculated offsite dose received by'a member of the public due to the release ofgaseous effluents from CPS was 2.65 E-02:or 0.027 mRem.Surface,

drinking, and Well water samples were analyzed for concentrations oftritium and gamma emitting nuclides.

Drinking water samples were alsoanalyzed for concentrations of gross beta and 1-131. Naturally occurring K-40was detected at levels consistent with those detected in previous years. Nofission or activation products were detected.

No tritiurm dr gross beta activity wasdetected 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 fishor shoreline sediment samples.Air particulate samples were analyzed for concentrations of gross beta andgamma emitting nuclides.

Cosmogenic Be-7 was detected at a level consistent with those detected in previous years. No fission or activation products weredetected.

High sensitivity 1-131 analyses were performed on weekly air samples.

Allresults were less than the minimum detectable concentration for 1-131.Cow milk samples were analyzed for concentrations of 1-131 and gammaemitting nuclides.

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

Concentrations of cosmogenically produced Be-7 and naturally occurring K-40 were consistent with those detected in previous years. No fissionor activation products were detected.

Grass samples were analyzed for concentrations of gamma emitting nuclides.

Concentrations of cosmogenically produced Be-7 and naturally occurring K-40were consistent with those detected in previous years. No fission or activation products were detected.

Environmental gamma radiation measurements were performed quarterly usingOptically Stimulated Luminescence Dosimeters (OSLD). ,Beginning in 2012,Exelon changed the type of dosimetry used for the Radiological Environmental Monitoring Program (REMP). Optically Stimulated Luminescent Dosimetry (OSLD) were deployed and Thermo-luminescent Dosimetry (TLD) werediscontinued.

A step change increase on the order of 10% has, been observedas a result of the application of the alternate methodology.

The relativecomparison to'control locations remains valid. OSLD technology is different thanthat Used in aTLD but has~the same purpose (to measure direct radiation). * .I' iIII, ...I.... , ......, ..., , ...I: " .'." ..." '.Ia-2-,I"', ':' 'i ." " " I II. Introduction

.The. ClintonPower:

Station (CPS), consisting of one approximately 1,140 MWgrosselectrical power output boiling water reactor is located in Harp Township, DeWitt County, Illinois.

CPS -is owned and operated by Exelon and becameoperational in 1987. Unit No. 1 went critical on 15 February 1987. The siteencloses approximately 13,730 acres. This~includes the 4,895 acre, man-madecooling .lake and about 452 acres-of property not owned. by Exelon. The plant issituated on approximately 150 acres. The cooling, water discharge flume -whichdischarges 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 theaforementioned 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 1980through 27 February 1987 and was summarized in a separate report. This reportcovers those analyses performed by Teledyne Brown Engineering (TBE) andLandauer on samples collected during the period 1 January 2013 through 31December 2013.A. Objectives of the REMPThe 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 materialreleased 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 thosepathways.

3. Continuously monitoring those media before and during Stationoperation to assess Station radiological effects (if any) on man andthe environment.

Ill. Program Description 3A. Sample Collection This section describes the general collection methods used byEnvironmental Inc. (Midwest Labs) to obtain environmental samples forthe CPSIREMP in 2013. Sample locations and descriptions can be foundin Tables B-1 and B-2, and Figures B-1 through B-3, Appendix B. Thesampling methods used by Environmental Inc. (Midwest Labs) are listed inTable B-2. 3..Aquatic Environment The aquatic environment was evaluated by performing radiological analyses on samples of surface water, drinking'water, well water, fish, andshoreline sediment.

Two gallon water samples were collected monthlyfrom continuous samplers located at three surface water locations (CL-90,CL-91 and CL-99) and one drinking water location (CL-14).

A monthlygrab sample was obtained from one surface water location (CL-13).Quarterly samples.

were obtained from two well water locations (CL-7Dand CL-12). All samples were collected in new unused plastic bottles,which were rinsed at least twice with source water prior to collection.

Fishsamples comprising the flesh-of largemouth bass, crappie, carp, bluegill, and 6hannel catfish; the species most commbnly harvested from the lakesby sporting fishermen, were collected semiannually at two locations, CL-19 and CL-105. CL-105 was the control location.

Shoreline sedimentsamples.composed of recently deposited substrate were collected at twolocations semiannually (CL-7B and CL-1 05 (control)).

Atmospheric Environment.

The atmospheric environment was. evaluated by performing radiological "analyses on samples of air particulate, airborne iodine, milk, food produceand grass. Airborne iodine and particulate samples were collected andanalyzed weekly at ten locations (CL-1, CL-2, CL-3, CL-4, CL-6, CL-7,CL-8, CL-11, CL-1i5and CL-94)!.

CL-11 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.

Thepumps were run continuously arid'sampled air at the -rate of approximately one cubic foot per minute. The filters were replaced weekly and sent tothelaboratory for analysis.

Milk samples were collected biweekly at one-location (CL-1 16) from Maythrough November and monthly from December through April to coincidewith the grazing season. All samples were collected in new unused-4 plastic bottles from the bulk tank at that location, preserved with sodiumbisulfite and shipped promptly to the laboratory.

Food products were collected once a month from June throughSeptember at four locations (CL-1.14, CL-1 15, CL-1 17 and CL-1 18). Thecontrol location was CL-1 14. Various broadleaf vegetable samples werecollected and placed in new unused plastic bags, and sent to thelaboratory for analysis.

Grass samples were collected biweekly at four locations,(CL-1, CL-2,CL-8 and CL-1 16) from May through October.

CL-1 16 was the controllocation.

All samples were collected in new unused plastic bags and sentto the laboratory for analysis.

Ambient Gamma Radiation.

Direct, radiation measurements were made using A1203:C Optically Stimulated, Luminescence Dosimetry (OSLD). Eachlocation consisted of2 OSLD sets. The.OSLDs were. exchanged quarterly and sent toLandauer for analysis.

The OSLD locations.were placed around the CPSsite as follows:An inner ring consisting of 16 locations (C.L-1, CL,5, CL-22',,CL-23, CL-24,,CL-34, CL-35,.CL-36, CL-42 CL-43, CL44, CL-45, CL-46, CL-47, CL-48and 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.Aspecial 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 andCL-114) .. .. .CL-i 1: represents the control ocation for all environmental TLDs.The specific OSLD 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 thesixteen-22,1/2 degree. sectors around thesite,where estimated annual dose from CPS, if any, would be most'significant;

3. On hills free from local obstructions andwithin sight of the ventst(where practical);

34. And near the closest dwelling to the HVAC and VG stacks in theprevailing downwind direction.

3Each location has two OSLDs in a vented PVC conduit locatedapproximately three- feet above ground level. The1OSLDs wereexchanged quarterly and sent to Landauer for analysis.

B. Sample Analysis 3This section describes the general analytical methodologies used by TBEand Environmental Inc. (Midwest Labs): to analyze the environmental samples for radioactivity for the CPS REMP in 2013. -The analytical procedures used by the laboratoriis:are'-listed in Table B-2.In order-to achieve the'stated objectives, the current program includes thefollowing analyseSi;"

.... 1. Concentrations of beta-eritters-in drinking water and airparticulates.

2. Concentrations of gamma emitters in surface, drinking and wellwater, 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,n milk,' drinking water and surfacewater. "5. Ambient gamma radiation levels at various on-site and off-siteenvirons.

IC. Data Interpretation 3The radiological and direct radiationadata'collected

-prior to CPS becomingoperationalwas used as a baseline with which these operational datawere compared.

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

In addition, data were compared to* .6- 3 previous years' operational data for consistency and trending.

Severalfactors were .important in- the. interpretation of the data:1. Lower Limit of Detection and Minimum, Detectable Concentration The lower limit of.detection (LLD).was defined as the smallestconcentration of radioactive material in a sample that would yield anet count (above background) that would be detected with only a5% probability; of falsely c oncluding.

that. a blank observation represents a "real" signal..

The LLDwas intended as a before thefact estimate of a system (including instrumentation, procedure andsample type).and not as;an after the-fact criteria for the presence ofactivity.

All analyses were .designed.to.,achieve the required CPSdetection capabilities for environmenrtal sample- analysis.

2. Net Activity Calculation and ReportingQ of ResultsNet activity for.a sample was calculated by subtracting background activity from the spample:

activity.

Since the REMP measuresextremely small changes in, radioactivity in the environment, background variatioRs may result in sample activity being lowerthan the background activity resulting in a negative number. Aminimum detectable concentration (MDC).was reported in all caseswhere positive activity was not detected.

Gamma. spectroscopy results.

for each type: of sample weregrouped as follows:For surface water, well water, fish, sediment and milk 14nuclides, Be-7, K Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95,Zr-95, Cs-134, Cs-137, Ba-140, La-140 and Ce-144 werereported.

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-137, Ba-140, La-140 and Ce-144 were reported.

For air particulate 11 nuclides, Be-7, K-40,. Co-60, Nb-95, Zr-95,Ru-103, Ru-106, Cs-134, Cs-137, Ce-141 and Ce-144, werereported.

..The mean and .standard deviation of the results were calculated.

The standard deviation represents the. variability.

of measuredresults for different samples.

rather than single. analysis uncertainty.

-.7-D. Program Exceptions Theexceptions described below are those that are considered

'deviations'

-from the Radiological Environmental Monitoring Program as required bythe Station's ODCM. By definition,

'deviations' are permitted asdelineated within NUREG-0.133, "Preparation of Radiological EffluentTechnical Specifications for Nuclear Power Plants",

October 1978, andwithin Radiological Assessment Branch Technical

Position, Revision 1,November 1979, which states...."Deviations are permitted from the.required

sampling, schedule if specimens are unobtainable due tohazardous conditions, seasonal unavailability, malfunction of automatic

-sampling equipmentand other legitimate reasons"...;

The below sectionaddresses ithe reporting requirements.found within Section 7.1 of theStation's ODCM."Exceptions/Anomalies UIIIIIIIII31January 16,'2013.

IR 1463444During weekly sampling activities ODCM air sampler CL-1 5 andnon-ODCM air-samplers CL-7,,CL-8, and CL-94 were found tohave timervshortages.

Sampling locations CL-7 and CL-8 wereshort by nine hours and locations CL- 5 and CL-94 were short bysix hours. The timer shortages are an" indication of, power outagesand loss of continuous sampling capability during the samplingperiodS..

These interruptions were likely the result of inclement winter weather.January.23, 2013. IR 1524569;Sampling at non-ODCM liquid compositor location CL-99 was notpossible due to freezing of the North Fork Creek. Grab samplewas not attainable due to :unsafe conditions.

'This prevented theJanuary sample from CL-99 from meeting thedefinition of acomposite sample.April 10, 2013. IR 1500173During weekly sampling activities, ODCM continuous air sample.:station CL-8 was found without power:. The power outage waslikely due to electrical sti'ms in ,the areai:,The, local utility companywas contacted to restore-power.,

-.8 -IIIIII May 15, 2013. IR 1514611During weekly sampling activities, ODCM continuous air samplestation CL-8 was found without power. Thelocal utility companywas contacted to restore power. The power outage was attributed to,a..faulty electricaltransformer...

May 22, 2013. IR 1524546During weekly sampling activities ODCM air sampler CL-8 wasfound to have a timer shortage of four hours.. The timer shortages are an indication of power outages and loss of continuous samplingcapability during the sampling period.-The power outage wasattributed to electrical storms in the area.May 29, 2013. IR 1519075During weekly sampling activities non-ODCM air sampler CL-1 wasfound to have a timer shortage of two hours. The timer shortages are an, indication

-of -power outagesand loss of continuous samplingcapability during the sampling:period..The power outage wasattributed to electrical storms in the area.June 5, 2013. IR -1521841

-During weekly sampling-activities ODCM ..air samplers CL- 1 andCL-15 along with non-ODCM airsamplers CL-7, CL-8, and CL-94were found to have timer shortages.

Sampling locations CL-7, CL-8, and CL- 1 were short by sixteen hours. Sample location CL-i5was short by six hours and sample location CL-94 was short byeight hours. The timer shortages.

are an indication of poweroutages and loss.of continuous sampling capability during thesampling period,-.Lossof power is attributed.to electrical storms in'-the area.,June 12, 2013. IR 1616987During sampling activities, the vendor technician found non-ODCMsurface water compositor CL-99 incapable of sampling due to aloss of power; The. compositor was: reset and normal collection was recommenced..

This issue prevented the June sample fromCL-99 from meeting the definition of a'composite sample.

June 26, 2013. IR 1529965 :During sampling activities, the vendor-technician found ODCMsurface water compositor CL-90 incapable.

of sampling due to aloss of power. Power was restored on 06/27/13.

The compositor was reset and normal collection was recommenced.

This issueprevented the June sample from CL-90 from. meeting the definition of a composite sample.July 03, 2013. IR 1532191During weekly sampling activities"non-ODCM air samplers CL-4-and CL-6 were found. to have a timer shortages of two hours.Additionally non-ODCM surface water compositor CL-99 was foundto have a shortage of two hours. The timer shortages are anindication of power outages and lossof continuous samplingcapability during the sampling period. The power outage wasattributed to electrical storms in the area.July 17, 2013. IR 1537315 and 1617014.During weekly sampling activities on 07/17/13, non-ODCM surfacewater compositor CL-99 was identified as not functioning properly.

A redundant compositor was installed and proper functionality wasverified the following sampling week. Because of the interruption,

'the!July sample from CL-99 did. not meet the definition of acomposite sample.August 07, 2013. IR 1617021 .". " IDuring weekly sampling activities non-ODCM air samplers CL-6was found to have a timer shortage of approximately 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . Thetimer shortages are an indication of power outages and loss ofcontinuous.sampling.capability during the sampling period. Thepower outage was attributedto electrical storms in the area.September 19, 2013. IR,1561484

.3Due to emergent potable water work in the service building atClinton Power Station, potable water compositor CL-14 wassecured for approximately 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . This issue prevented theSeptember sample from CL-14 from meeting the definition of acomposite sampler.

3 September 25, 2013. IR 1563652 -:During weekly sampling activities non-ODCM air samplers CL-4and CL-6 were found to.,have no power. The power outagesresulted in a loss of continuous sampling capability during thesampling period. The power outage was attributed to electrical storms in the area.September 25, 2013. IRI 649272During the monthly vegetation sampling

, sufficient leafy vegetation was unobtainable for one of the three-required

samples due to lateseason.unavailability.

Tree leaves were substituted to supplement the obtainable sample.October 23, 2013. IR 1575875During weekly sampling.

activities non-ODCMair samplers CL-7and CL-94 along with ODCM air samplers CL-8 and CL-15 werefound to have a timer'shortages of two hours,: The timer shortages are an indication of power outages and loss of continuous sampling.,.capability during the sampling period. ,.December 11,2013.

IR 1595805During weekly sampling activities non-ODCM air samplers CL-6was found without power. This-represents a loss of continuous sampling capability during the sampling period. Also noted was theinability to collect sample from non-ODCM surface watercompositor CL-99 due to freezing of sampling lines.December 18, 2013. IR 1.604301During weekly sampling, activities non-ODCM air samplers CL-6.- was found with. a-timer shortage of approximately 9 hours1.041667e-4 days 0.0025 hours 1.488095e-5 weeks 3.4245e-6 months due topower outage identified on 12/18/13.

Also noted was the inability to collect sample from non-ODCM surface water compositor CL-99due to freezing of the North Fork Creek. This represents a loss of-continuous sampling capability during the sampling period.Missed -SamplesDecember 26, 2013. IR 1608879Sampling was not possible at air sampling location CL-7. The IIsampler is located on the property of Mascoutin State Park and the 3park was closed for the holidays.

The sampl was obtained on1.2/27113.

This sampling time lies outside the grace period forsampling and is therefore considered a missed sample.Program exceptions were reviewed to understand the causes of theexception and to return to ODCM sample compliance before the next Isampling frequency period.The overall sample recovery rate indicates that the appropriate 3procedures and equipment are in place to assure reliable programimplementation.

.E. Program ChangesThe corporate procedure CY-AA-170-1000 Radiological Environmental i:Monitoring Program and Meteorological Program Implementation wasrevised.

The changes made were non-impactful.and included additional guidance for clarification regarding REMP air sampling equipment.

1IV. Results and Discussion

.A. Aquatic Environment

1. Surface Water iSamples were taken hourly fioma continuous compositor at threelocations (CL-90; CL-9.1 and CL-99) on:a monthly schedule and Igrab samples were'taken monthly from one location (CL-13).

Thefollowing analyses were performed.

3Iodine-131

" Monthly samples from location CL-90 were analyzed for 1-131 1activity (Table C-1.1, Appendix C). No 1-131 was detected in anysamples and the required LLD was met. 3TritiumMonthly samples from all, locations-were composited quarterly and Ianalyzed for tritium activity (Table C-1.2, Appendix C). No tritiumwas detected, in any samples and the, required LLD was met.,. -! : .... ,, -. ! .., ...' .,I112 -I Gamma SpectrometrV

.Samples from all locations were analyzed for gamma emittingnuclides (Table.C-1.3, Appendix C). Naturally occurring K-40 wasfound in nine of 48 samples.

The concentration ranged from 22 to84 pCi/L. No other nuclides were detected and all required LLDswere met.2. Drinking WaterMonthly samples were collected from a continuous compositor atone location (CL-14).

The following analyses were performed:

Gross BetaMonthly samples .were analyzed

.for concentrations, of gross beta(Tables C-I1.1, Appendix C). No ,Gross. beta was detected in any ofthe samples.TritiumMonthly samples were composited quarterly and analyzedfor tritium activity (Table C-I1.2, Appendix C). No tritium was detectedin any samples and the required LLD was met..Iodine-1 31Monthly:samples fro.m location CL-14,were analyzed for 1-131activity (Table, C-II.3, Appendix C). No 1-131 was detected in anysamples and the required.

LLD was.met.Gamma Spectrometry Monthly samples were analyzed for gamma emitting nuclides(Table C-11.4, Appendix C)..-Naturally occurring K-40 was detectedin two samples.

The concentrations ranged from 68 to 71 pCi/L.No other nuclides were detected and all required LLDs were met.3. Well WaterQuarterly grab samples were collected at two locations (CL-7D andCL-i 2, consisting of CL-12R.[a raw.water sample from this well]and CL-12T [same. well water, butiafter treatment and available forconsumption]).

The following analyses were performed:

-:13 .-

IIITritium 3Samples from all locations were analyzed for tritium activity (TableC-I11.1, Appendix C). No tritium was detected in any samples and 3the required LLD was met.Gamma Spectrometry 3Samples from all locations were analyzed for gamma emittingnuclides (Table C-111.2, Appendix C). Naturally occurring K-40 wasfound in one of four samples-for location CL-12T. Theconcentration was 67 pCi/l. No other nuclides were detected in anyof the~samples and all required LLDs were met. 34. FishFish samples comprised of carp, largemouth bass, bluegill, crappie,and channel catfish were collected at two locations (CL-1 9 andCL-1 05) semiannually.

The following'analysis was performed:

3Gamma Spectrometry The edible portion of fish samples from both locations wasanalyzed for gamma emitting nuclides (Table C-IV.l, Appendix C).Naturally occurring K-40 was found at both locations.

No fission oractivation products were found. No-other nuclides were detectedand the required LLDs were met. I5. Shoreline Sediment UAquatic shoreline sediment samples were collected at CL-7B1semiannually'and CL-105 annually.

The following analysis was 3',performed:

"Gamma Spectrometry IShoreline sediment samples were analyzed for gamma emittingnuclides (Table C-V.1, Appendix C). Naturally occurring K-40 was Idetected in all samples.

No fission or activation products werefound. No other nuclides were detected and the required LLDswere met.I B. Atmospheric Environment

1. Airbornea. Air Particulates:.

Continuous air particulate samples were collected from 10locations on a weekly basis. The 10 locations wereseparated, into three groups: Group, I.jrepresents locations within one mile of the CPSsite boundary (CL-2, CL-3, CL-4,CL-6, CL-15. a,nd 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 I1I represents the controllocation greater than five miles from CPS (CL-1 1). Thefollowing analyses were performed:

Gross BetaWeekly.samples were analyzed for concentrations of betaemitters (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 indetermining the effects,,

if any, resulting from the operation of CPS-. The results fromthe On-Site locations (Group I)' -3ranged from 7 to 53 -E'3 pCi/m, with a mean of 20 E-3pCi/m3.The results from the Intermediate Distance location(Group II) ranged from 7 to 57 E-3 pCi/m3 with a mean of 20E-3 pCi/m3.The results from the Control locations (GroupIll).ranged-from,8,to 51 E-3 pC.i/i with a mean of 21 E-3pCi/min3 Comparison of the 2013 air particulate data withprevious years data indicate no effects from the operation ofCPS (Figure C-5, Appendix C). In addition, a comparison ofthe weekly mean values for.2013 indicate no notabledifferences among the three groups.Gamma .Spectrometry

.Weekly samples were. composited quarterly and analyzedfor gamma emitting nuclides (Table C-VI.3, Appendix C).Naturally occurring cosmogenically produced Be-7 due tocosmic ray activity was detected in 38 of 40 samples.

Noother nuclides were detected and all required LLDs weremet.-J15

b. AirborneIodine 5Continuous air samples were collected from 10 locations (CL-1, CL-2, CL-3, CL-4, CL-6, CL-7, CL-8, CL-11, CL-15and CL-94) and analyzed weekly for 1-131 (Table C-VII.i,Appendix C). All results were less than the MDC and therequired LLD was met.2. Terrestrial

a. MilkSamples were collected from CL-1 16 biweekly May throughNovember and monthly December through April to coincidewith the grazing season. The following analyses wereperformed:

3-Iodine-t31 Milk samples were analyzed for concentrations of 1-131(Table C-VIII.I, Appendix C). Iodine-1 31 was not detectedin any of the samples..The-required LLD was met.Gamma Spectromet.

.Each milk sample was analyzed for concentrations ofgamma 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 weremet.b. Food Products 3Broadleaf vegetation samples were collected from fourlocations (CL-1i4, CL-115, CL-117 and CL-1i8) monthlyJune through Septemberto coincide with the harvestseason. The following analysis were performed:

Gamma SpectrometrVy.

Each food product sample was analyzed for Concentrations of gamma emitting nuclides (Table C-IX.l, Appendix C).Cosmogenically produced Be-7 due to cosmic ray activitywas detected in most samples.

Naturally occurring K-40 activity was found in all samples.

No other nuclides weredetected 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.

Thefollowing analysis were performed:

Gamma Spectrometry Each grass sample was analyzed for concentrations ofgamma emitting nuclides (Table C-IX.2, Appendix C).Cosmogenica.lly produced Be-7 due to cosmic ray activitywas detected in most samples.:

Naturally occurring K-40activity was found in all samples.

No other nuclides weredetected and all required LLDs were met.C. Ambient.Gamma Radiation

...Ambient gamma radiation levels were measured utilizing OSLD (optically stimulated luminescence dosimeters).

Fifty-four OSLD locations wereestablished around the site'. Results of OSLD measurements are listed inTables C-X.1 to C-X.3, Appendix C.A total of 216 OSLD measurements were made in 2013. The averagedose from the in.per ring was ,23.1 mR/quarter.

The average dose fromthe, outer-ring was 23.2 mR/quarter.,

The-average dose from the specialinterest group was 22.9 mR/quarter.

The average dose from thesupplemental group was 21.8 mR/quarter.

The quarterly measurements ranged from 18.2 to 27.0 mR/quarter.,

The. inner ring and outer ring..measurements compared well to the ControlStation, CL-1 1, which ranged from 20.5rmR/quarter to 23.3 mR/quarter with an average measurement of 21.5 mR/quarter.

A comparison of theInner*Ring and Outer Ringdata to the Control Location data indicate thatthe ambient gamma radiation levels from all the locations werecomparable.

The historical ambient gamma radiation data from thecontrol location were plotted along with similar data from the Inner andOuter Ring Locations (Figure.

C2,Appendix C).-17.-

D. Land Use SurveyA Land Use Survey conducted during the June through September 2013growing season around the 'Clinton Power Station (CPS) was performed by Environmental Inc. (Midwest Labs) for Exelonjto comply with Clinton's Offsite Dose Calculation Manual, section 5.2. The purpose of the surveywas to document the nearest resident, milk producing animal and gardenof greater than 538 m2 in each of the sixteen 22 1/2 degree sectors aroundthe site. The distance and direction of all locations from the CPS StationHVAC vent stack were positioned using Global Positioning System (GPS)technology.

There were no changes required to the CPS REMP as aresult of this survey. The results of.this survey are summarized below.Distance in Kilometers from the CPS Station HVAC VentStackSector ..Residence Garden, Milk Animal1 N2 NNE.3. NE4 ENE6 ESE.7 SE8. SSE9S10 SSW11 SW12 WSW13W14 WNW15 NW16 NNW(kin) (km),1.5 1.5,-1.5 4.182;1 7.0..2.9 2.9.177, .1.75.1. ...5,1.4.4 7.1.2.9 4.54.8 6.64.7 > 81.2 5.93.6 3.72.0 3.22.6 2:62.7 .4.72.1 ..2.11.54.8.>86.6>8>8>8> 86.65.5>85.5>8>8>82.1IIIIIUIIUIIII£IIII3E., Errata Data 'Teledyne Brown Engineering (TBE) provides data results [activity, uncertainty and minimum detectable concentration

{MDC}]. We arerequired to calculate the MDC using a multiplier of 4.66.6M D A ... .6A t.2.22'(v

) 18 "18 -

Where:At = counting time for sample (minutes)

P3-=.background:

rate of instrument blank (cpm)2.22 = d!m/pCi or: 2.22 x 106 dpm/pCiv = volume or mass of sample analyzedy = chemical yieldE = efficiency of the: counterThe formulas for calculating the activity, uncertainty and MDC arecontained in the software of the counting equipment.

For the gammasystem, when the new detector number 08 was added to the system inJanuary 2012, the default value.of 3.29 was used to calculated the MDCson detector

08. The activity and uncertaintywere not affected.

Themultiplier has been changed from 3.29 to the required 4.66.When the MDCs are recalculated using 4.66, the MDC values willincrease by 41.6%. The greatest impact will be on the short-lived nuclideswhich have an LLD requirement, e.g. 1-131, Ba-140 and La-140. Whichmeans there could be some missed LLDs which will be identified in theErrata Data Appendix tablle of the 2013 annual report. This.is not areportable issue for the NRC. There is also the possibility that naturally produced nuclides that Were detected would become a non-detect, e.gTh-228, Th-230, etc.F. Summary of Results -Inter-Laboratory Comparison ProgramThe primary laboratory analyzed Performance Evaluation (PE) samples ofair particulate, air iodine, milk, soil, vegetation and water matrices for 19analytes (Appendix D). The PE samples, supplied by Analytics Inc.,Environmental Resource Associates (ERA) and DOE's Mixed AnalytePerformance Evaluation Program (MAPEP),

were evaluated against thefollowing pre-set acceptance criteria:

1.- Analytics Evaluation-CriteriaAnalytics' evaluation report provides a ratio of TBE's result andAnalytics' known value. Since flag values are not assigned byAnalytics, TBE-ES evaluates the reported ratios based on internalQC requirements, which are based on the DOE MAPEP criteria.

-19.-

/I2. ERA Evaluation Criteria"

'ERA's evaluation report provides

'an acceptance range for controland warning limits with associated flag ývalues.

ERA's acceptance limits are established per the USEPA,'NELAC,,state specific PTprogram requirements or ERA's SOP for the Generation ofPerformance Acceptance Limits, as applicable.

The acceptance

'"limits are either determined by a regression equation specific toeach analyte or a fixed percentage limit promulgated under theappropriate regulatory document.

33. DOE Evaluation CriteriaMAPEP's evaluation report provides an acceptance range withassociated flag values.TheMAPEP defines three levels of performance:

Acceptable (flag -."A"),.Acceptable with Warning (flag = "W"), and NotAcceptable (flag =,"N"). Performance is.considered acceptable when a mean result for the specified analyte is' + 20% of thereference value. Performance is acceptable with warning when a.mean fesult'falls-in the range from'+/- 20%'to +/- 30% of the reference value (i.e., 20% -1 bias <:' 30%)'. If the bias' is greater than 30%, theresults:,are deemfed not acceptable.

For the TBE laboratory, 178 out of 185 ana lyses performed met thespecified acceptance criteria.

Seven analyses (Sr-89,and Sr-90 in milk,Co-57, Zn-65 and Sr-90 in soil, Cs-1 34 in air particulate and Sr-90 in Ivegetation

[two low warning in-a' row]) did not meet the specified acceptance criteria; or internal QA requirements for.the following reason:1. Teledyne Brown Engineering's Analytjics September 2013 Sr-89 in Imilk result of 63.9 pCi/L was.lower than the known value of 96.0pCi/L. The failure was a result of analyst error and was specific tothe Analytics sample. Client samples for the associated time Iperiod were evaluated and no client samples were affected by this'failure.

NCR'13-15

2. Teledyne Brown Engineerng's Analytics Se r r i., ~ .n tc. September2.2013 Sr-90 inmilk result of 8.88 pCi/L was lower than the known value of 13.2pCi/L.. The failure was a result of analyst error.and was specific tothe Analytics'sample.

Client-samples for the. associated timeperiod were evaluated and no client samples were affected by thisfailure.

NCR,13-15 I

3. & 4.Teledyne Brown Engineering's MAPEP September 2013 Co-57and Zn-65 in soil were evaluated as failing the false positive test.While MAPEP evaluated the results as failures, the gammasoftware listed the-,results as non identified nuclides.

The twonuclides would never have been reported as detected nuclides to aclient. MAPEP does not allow laboratories to put in qualifiers forthe submitted data nor "less than" results.

MAPEP evaluates results based on the relationship between the activity and theuncertainty.

MAPEP spiked the soil sample with an extremely largeconcentration of Eu-1 52, which was identified by the gammasoftware as an interfering

nuclide, resulting in forced activity resultsthat were evaluated by MAPEP as detected Co-57 and Zn-65. Noclient samples were affected by these failures.

NCR 13-145. Teledyne Brown Engineering's MAPEP September 2013 Sr-90 insoil result of 664 Bq/kg was highler than the known value of 460Bq/kg, exceeding the upper control limit of 598 Bq/kg. An incorrect Sr-90&result was entered'into the.:MAPEP database.

The correctSr-90 activity of 322 Bq/kg would have been evaluated asacceptable with Warning.

No client samples were affected by thisfailure.

NCR 13-146.. Teledyne Brown.Engineering's MAPEP September 2013 Cs-1 34 inair particulate activity of -0.570 Bq/sample was, evaluated as afailed false positive test, based on MAPEP's .evaluation of the resultas a significant negative value at 3 standard deviations.

A negativenumber would never have been reported as a detected nuclide to aclient, therefore no client samples were affected by this failure.NCR.*", ..314 .-*. ' ..7_ Teledyne Brown Engineering's MAPEP September 2013 Sr-90 inyegetation result was !nvestigated due to :two 10w warnings in arow. It appears the September sample was double spiked withcarrier, resutting in~a low activity.

With a recovery of around 50%lower, the Sr-90 result-would have fallen within the acceptance range. -No clienttsampleswere affected by this issue. NCR 13-14For the EIML laboratory, 89 of 92 analyses met the specified acceptance criteria.

Three analyses (AP -Gross Alpha, Soil -Sr-90 and Co-57) didnot meet the specified acceptance criteria for the following reasons:1. Environmental Inc., Midwest Laboratory's MAPEP February 2013air particulate gross alpha result of 0.14 Bq/total sample was lowerthan the known value of 1.20 Bq/total sampleexceeding the lowercontrol limit of 0.36 Bq/total sample. -The filter was recounted overnight.

No significant activity could be detected.

-.21-

2. Environmental Inc., Midwest Laboratory's MAPEP February 2013 1soil Co-57 result of 408.40 Bq/kg was lower than the known valueof 628.0 .Bq/kg, exceeding the lower control limit of 440.0 Bq/kg.The, sample was reanalyzed using additional fuming nitric,separations.

The reanalysis result, of 574.4 fell within the controllimits.3. Environmental Inc., Midwest Laboratory,'s MAPEP August 2013 soilCo-57 result of 699.60 Bq/kg was higher than the known value of0.00 Bq/kg, exceeding the upper control limit of 5.00 Bq/kg.Interference from Eu-152' resulted in misidentification of Co-57. IThe Inter-Laboratory Comparison Program provides evidence of "incontrol" counting systems and methods, and that the laboratories areproducing accurate and reliable data.V. References

1. American National Standards Institute, Inc., "Performance, Testing and 3Procedural.Specificationsfor Thermoluminescent Do simetry,"

ANSI N545-1975. -2. Code of Federal Regulations, Title 10, -Part 20 (Nuclear Regulatory I.-Commission).

3. CPS 2011 Annual: Radioactive EfflUent'Release Report. 34. "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 theDevelopment of Radiation Protection Standards,"

May 13, 1960. I7. I lnternational-Commission on Radiation Protection, Publication 2, "Reportof Committee II on Permissible'Dose for Internal Radiation,"

(1959) with1962 Supplement issued in ICRP Publication 6; Publication 9, I"Recommendations on Radiation.

Exposure,"(1 965); ICRP Publication 7(1965), amplifying specific recommendations

.of Publication 26 (1977). 38. International Commission on Radiation Protection, Publication No. 39(1984), "Principles of Limiting Exposure to the Public to Natural Sourcesof Radiation".

9. "Radioactivity in the Environment:

Sources, Distribution andSurveillance,"

Ronald L. Kathren, 1984.10. National Council on Radiation Protection and Measurements, Report No. I22, "Maximum Permissible Body Burdens and Maximum Permissible 3

Concentrations of Radionuclides in Air and Water for Occupational Exposure,"

.(Published as National Bureau of .Standards Handbook 69,issued June 1:959, superseding Handbook 52).11. National Council on-Radiation Protectiornand 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 1987.15. National Research

Council, 1990, Committee on Biological Effects ofIonizing Radiation (BEIR V), Board on Radiation Effects Research on LifeSciences, "The Effects of Exposure to.Low Levels of Ionizing Radiation".

16. United States Nuclear:RegulatoryCommission.,

Regulatory Guide 4.1,"Programs for Monitoring Radioactivity in the Environs of Nuclear PowerPlants,"

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..8. United States Nuclear:Regulatory'Commission, Regu[atory"Guide 1.109,"Calculation of Aninual Doseto"Man from Routine'Releases of Reactor_Effluents for-the Purpose of EvaluatingCompliance with 10CFR Part 50,Appendix I, "RevisiQn.l, October 1977.;:.::.19. United StatesNuclear Regulatory Commission Branch Technical

Position,

."An.Acceptabl.e,Radiological.,Envr.onmental Monitoring Program,"

Revision 1, November 1979.. ..20. United States Nuclear Regulatory Commission, Regulatory Guide 4.15,"Quality Assurance foriRadiological Monitoring Programs (NormOperations)

-Effluent Streams and the.Environment,"

Revision 1,..'. ,February.1979.

-21. Technical Specifications, Clinton Power Station, UnitNo. 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.IIIi APPENDIX ARADIOLOGICAL ENVIRONMENTAL MONITORING REPORT SUMMARY Intentionally left blank nu n -, num m -oil ln -- -n-_u- lTABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS SURFACE WATER 1-131 12 I <LLD NA 0(PCI/LITER)

H-31648GAMMABE-7K-402000 <LLDNA <LLDNA 53(3/24)(22/80)15 <LLD15 <LLD30 <LLD15 <LLD<LLD0<LLD62(6/24)(35/84)67(3/12)(62/72)CL-91 CONTROLPARNELL BOAT ACCESS6.1 MILES ENE OF SITEMN-54CO-58FE-59CO-60<LLD<LLD<LLD<LLD000THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS SURFACE WATER ZN-65 30 <LLD <LLD 0(PCIILITER)

NB-95ZR-95CS-134CS-137BA- 140L,-140CE-14415 <LLD30 <LLD15 <LLD18 <LLD60 <LLD15 <LLNA <LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD0000000THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)mm -- n m nm m = m u IMi mm m m mm -m ---_ mmmm m m m m- m -TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, H, REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS DRINKING WATER GR-B 12 4 <LLD NA 0(PCI/LITER)

H-31-13141212GAMMABE-72000 <LLDI <LLDNA <LtDNA 69(2/12)(68/71)-1.5 * <LLD15 <:LLD30 <LLDNANA00NANAK-4069(2/12)(68/71 )CL- 14 INDICATOR STATION PLANT SERVICE BLDGONSITE000MN-54CO-58NANA0-' FE-59NA0THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS DRINKING WATER CO-60 15 <LLD NA 0(PCI/LITER)

ZN-65NB-95ZR-95CS-134CS-137BA-140LA- 140CE-14430 <LLD15 <LLD30 <LLD15 <LLD18 <LLDNANANANANANANANA000060<LLD000015 <LLDNA <LLDTHE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)m I I I I I m I = m -m m m m I m m TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS WELL WATER H-3 12 2000 <LLD NA 0(PCI/LITER)

GAMMABE-712NA <LLD*NANAK40 NA 67(1/12)67(1/4)CL-12T INDICATOR DEWITT PUMP HOUSE1.6 MILES E OF SITE0000MN-54CO-58FE-59CO-60ZN-6515 <LLD'15 <LLD......30 .. <LLD15 <LLD30 <LLDNANANANANA000THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS WELL WATER NB-95 15 <LLD NA 0(PCI/LITER)

ZR-95CS-134CS-137BA-140LA-140CEw.4430 <LLD15 <LLD18 <LLD60 <LLD15 <LLDNA <LLDNANANANANANA00000FISH(PCI/KG WET,)GAMMABE-7 -16NA <LLD<LLD0THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)lmm m mi = m- m -o mn / m m

---m- rn --TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS FISH K-40 NA 3639 3690 3690 CL-105 CONTROL 0(PCI/KG WET)(8/8)(2920/4494)

(8/8)(1324/6694)

LAKE SHELBYVILLE 50 MILES S OF SITEMN-54CO-58FE-59CO-60ZN-65NB-95ZR-95CS-134130 <LLD130 <LLD260 <LLD130 <LLD260 <LLDNA <LLD'NA <LLD"130 <LLD<LLD<LLD<LLD<LLD<LLD<LLD0000<LLD00<LLDTHE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS FISH CS-137 150 <LLD <LLD 0(PCI/KG WET)00BA- 140LA-140CE-144GAMMABE-7NA <LLDNA <LLDNA <LLD<LLD<LLD<LLD0SEDIMENT(PCI/KG DRY)4NA <LLD<LLD.- .-.... .K-40NA .7657.(2/2)(7632/7681)

.10282(2/2)(7834/12730) 10282.(2/2)(7834/12730)

-CL-105 CONTROLLAKE SHELBYVILLE 50 MILES S OF SITE000MN-54 'NA <LLDNA <LLD<LLD<LLD..:" CO-58THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)m mmm = -m -mm -mmm -m m --I m ml ------II --TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) " (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS SEDIMENT FE-59 NA <LLD <LLD -0(PCI/KG DRY)',>CO-60ZN-65NB-95ZR-95CS-134CS-137BA-140NA <LLDNA <LLDNA <LLDNA <LLD150.. <LLD-180" <LLDNA <LLD<LLD<LLD<LLD*<LLD'<LLD<LLD00<LLD00THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013.NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPAT1HWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS SEDIMENT LA-140 NA <LLD <LLD 0(PCI/KG DRY)CE-144AIR PARTICULATE (E-3 PCI/CU.METER)

GR-B520,>GAMMABE-740NA <LLD10 20.(466/468)

(7/57)NA 70(34/36)(35/103)NA <LLDNA <LLDNA <LLDNA <LLD<LLD21(52/52)(8/51)79(4/4)(57/98)<LLD<LLD<LLD<LLD21(52/52)(9/5 1)88(4/4)(53/103)CL-94 INDICATOR OLD CLINTON ROAD0.6 MILES E OF SITECL-4 INDICATOR RESIDENCE NEAR RECREATION AREA0.8 MILES SW OF SITE00000*00K-40CO-60NM-5ZR-95THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

-m -m m m -m m -TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS AIR PARTICULATE RU-103 NA <LLD <LLD 0(E-3 PCI/CU.METER)

>RU-106CS-134CS-137CE-141CE-144GAMMA1-1311-131NA <LLD50 <LLD60 <LLDNA <LLDNA <LLD<LLD<LLD<LLD<LLD<LLD0000AIR IODINE(E-3 PCI/CU.METER)

MILK" "(PCI/LITERY 52070..<LLD<LLD<LLD020I NATHE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS MILK GAMMA 20(PCIILITER)

BE-7K-40N)MN-54CO-58FE-59CO-60ZN-65NA NANA NANA NANA NANA NANA NANA NANA NA1242(20/20)(1019/1412) 1242(20/20)(1019/1412)

<LLD<LLD<LLD<LLD<LLD<LLD<LLDCL-I 16 CONTROLPASTURE IN RURAL KENNEY14 MILES WSW OF SITE00000.000NB-95'THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)= m -= m -m = = m -= l = = m m m TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN(M) MEAN(M) MEAN(M) STATION # NUMBEROFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS MILK ZR-95 NA NA <LLD 0(PCI/LITER)

CS-134CS-137BA-140LA-140CE-144GAMMABE-715 NA18 N A60 NA15 NANA NA<LLD<LLD<LLD<LLD<LLD00000VEGETATION (PCI/KG WET)48NA 283(32/36)(73/731)NA 5053(36/36)'(2177/10940) 314(12/12)(46/653)5583(12/12)(2804/8335) 320(11/12)(96/582)6166(12/12)(2289/10940)

CL:I 18 INDICATOR SITE'S MAIN ACCESS ROAD0.7 MILES NNE OF SITECL-1 18 INDICATOR SITE'S MAIN ACCESS ROAD0.7 MILES NNE OF SITE00K.40THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS VEGETATION MN-54 NA <LLD <LLD 0(PCI/KG WET)CO-58FE-59CO-60ZN-65NB-95ZR-95NA <LLDNA <LLDNA <LLDNA <LLDNA <LLDNA <LLD60 <LLD60 <LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD00001-131CS-1340THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)m = = inlml = m -= = = = m m m ---I --m -m m m m m mI -TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS VEGETATION CS-137 80 <LLD <LLD 0(PCI/KG WET)BA-140LA-140CE-144GAMMABE-7NA <LLDNA<LLD<LLD<LLD<LLD000NA <LLD.GRASS(PCI/KG WET)52NA 1635(37/39)(221/3930)

NA -5982(39/39)(3416/10380) 1836(13/13)(628/3244) 5227.(13/13)(3568/6460) 1836(13/13)(628/3244) 6991.(13/13)(4895/10380)

CL-I 16 CONTROLPASTURE IN RURAL KENNEY14 MILES WSW OF SITECL-08 INDICATOR

-DEWITT CEMETERY2.2 MILES E OF SITEK-400000MN-54CO-58NA <LLD<LLDNA <LLD .<LLDTHE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIM1T (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS GRASS FE-59 NA <LLD <LLD 0(PCI/KG WET)CO-60ZN-65NB-95ZR-95NA <LLDNA <LLDNA <LLDNA<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD<LLD00001-131CS-13460 <LLD60 <LLD80 <LLDNA <LLDCS-137BA- 140THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)m m m m m m m m m m mn m m m TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL SUMMARY FORTHE CLINTON POWER STATION, 2013NAME OF FACILITY:

CLINTON POWER STATION DOCKET NUMBER: 50-461 2013LOCATION OF FACILITY:

DEWITT COUNTY, IL REPORTING PERIOD:INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)LOCATIONS LOCATIONMEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M) MEAN (M) MEAN (M) STATION # NUMBER OFPATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTEDMEASUREMENT)

(LLD) MEASUREMENTS GRASS LA-140 NA <LLD <LLD 0(PCIIKG WET)CE-144NA <LLD<LLD00DIRECT RADIATION (MILLI-ROENTGEN/QTR.)

OSLD-QUARTERLY 216NA 23(212/212)

(18.2/27.0) 22(4/4)(20.5/23.3) 25(4/4)(22.2/26.9)

CL-56 INDICATOR 4.1 MILES SSETHE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUESFRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

A.Intentionally left blankIIIIUIIIIII APPENDIX BLOCATION DESIGNATION, DISTANCE

& DIRECTION, ANDSAMPLE COLLECTION

& ANALYTICAL METHODS Intentionally left blankIII TABLE B-1:Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, ClintonPower Station, 2013Location Location Description Distance

& Direction From SiteA. Surface WaterCI-13CL-90CL-91CL-99Salt Creek Bridge on Rt. 10 (indicator)

Discharge Flume (indicator)

Parnell Boat Access (control)

North Fork Access (control) 3.6 miles SW0.4 miles SE6.1 miles ENE3.5 miles NNEB. Drinking (Potable)

WaterCL-14C. Well WaterStation Plant Service Bldg (indicator)

Mascoutin Recreation Area (indicator)

DeWitt Pump House (indicator)

OnsiteCL-7DCL-12TCL-12RD. Milk -hi-weeklv

/ monthlyCL-116Dement Dairy (control)

E. Air Particulates

/ Air IodineCL-1CL-2CL-3CL-4CL-6CL-7CL-8CL-11CL-15CL-94Camp QuestClinton's Main Access RoadClinton's Secondary Access RoadResidence Near Recreation Area.Clinton's Recreation AreaMascoutin Recreation AreaDeWitt CemeteryIllinois Power Substation (Control)

Rt. 900N Residence Old Clinton RoadEnd of Discharge Flume (indicator)

Lake Shelbyville (control)

F. Fish2.3 miles ESE1.6 miles E1.6 miles E14 miles WSW1.8 miles W0.7 miles NNE0.7 miles NE0.8 miles SW0.7 miles WSW2.3 miles SE2.2 miles E16 miles S0.9 miles N0.6 miles E3.4 miles E50 miles S2.1 miles SE50 miles S12.5 miles SSE0.7 miles NE0.9 miles N0.7 miles NNE1.8 miles W0.7 miles NNE2.2 miles E14 miles WSWCL-19CL-105G. Shoreline SedimentCL-7B Clinton Lake (indicator)

CL-105 Lake Shelbyville (control)

H. Food ProductsCL-114CL-115CL-117CL-1181. GrassCisco (Control)

Site's Secondary Access RoadResidence North of SiteSite's Main Access RoadCamp QuestClinton's Main Access RoadDeWitt CemeteryPasture in Rural KenneyCL-1CL-2CL-8CL-1 16B-1 ITABLE B-i: Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, Clinton iPower Station, 2013Location Location Description Distance

& Direction From SiteJ. Environmental Dosimetry

-OSLDInner RingCL-1 1.8 miles WCL-5 0.7 miles NNECL-22 0.6 miles NECL-23 0.5 miles ENECL-24 0.5 miles ECL-34 0.8 miles WNWCL-35 0.7 miles NWCL-36 0.6 miles NCL-42 2.8 miles ESECL-43 2.8 miles SECL-44 2.3 miles SSECL-45 2.8 miles SCL-46 2.8 miles SSWCL-47 3.3 miles SWCL-48 2.3 miles WSWCL-63 1.3 miles NNWOuter RingCL-51 4.4 miles NWCL-52 4.3 miles NNWCL-53 4.3 miles ECL-54 4.6 miles ESECL-55 4.1 miles SECL-56 4.1 miles SSECL-57 4.6 miles SCL-58 4.3 miles SSWCL-60 4.5 miles SWCL-61 4.5 miles WSWCL-76 4.6 miles NCL-77 4.5 miles NNECL-78 4.8 miles NECL-79 4.5 miles ENECL-80 4.1 miles WCL-81 4.5 miles WNWB-2IIiIIIIIIIiIIIIIi TABLE B-i: Radiological Environmental Monitoring Program -Sampling Locations, Distance and Direction, ClintonPower Station, 2013Location Location Description Distance&

Direction From SiteJ. Environmental Dosimetry

-OSLD (cont.)Special InterestCL-37 3.4 miles NCL-41 2.4 miles ECL-49 3.5 miles WCL-64 2.1 miles WNWCL-65 2.6 miles ENECL-74 1.9 miles WCL-75 0.9 miles NSupolemental CL-2 0.7 miles NNECL-3 0.7 miles NECL-4 0.8 miles SWCL-6 0.8 miles WSWCL-7 2.3 miles SECL-8 2.2 miles ECL-15 0.9 miles NCL-33 11.7 miles SWCL-84 0.6 miles ECL-90 0.4 miles SECL-91 6.1 miles ENECL-97 10.3 miles SWCL-99 3.5 miles NNECL-114 12.5 miles SEControlCL-1i 16 miles SB-3 iTABLE B-2: Radiological Environmental Monitoring Program -Summary of Sample Collection and Analytical

Methods, Clinton Power Station, 2013Sample Analysis Sampling Method Analytical Procedure NumberMediumSurface Gamma Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysisWater Spectroscopy from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure ManualSurface '. Tritium*

Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquidWater 'from a continuous scintillation water compositor.

Env. Inc., SPM-1 Sampling Procedure ManualSurface 1-131 Monthly composite TBE, TBE-2012 Radioiodine in various matricesWater from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure ManualDrinking Gross Beta Monthly composite TBE, TBE-2008 Gross'Alpha and/or'gross beta activity inWater from a continuous various matriceswater compositor.

Env. Inc:, SPM-1 Sampling Procedure ManualDrinking Gamma Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysisWater Spectroscopy from a continuous water compositor.

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

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

Env. Inc., SPM-1 Sampling Procedure ManualWell Water Gamma Quarterly composite TBE, TBE-2007 Gamma emitting radioisotope analysisSpectroscopy from a continuous water compositor.

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

Env. Inc., SPM-1 Sampling Procedure ManualFish Gamma Semi-annual samples TBE-2007 Gamma emitting radioisotope analysisSpectroscopy collected viaelectroshocking orother techniques Env. Inc., SPM-1 Sampling Procedure ManualAir Gross Beta One-week composite TBE, TBE-2008 Gross Alpha and/or gross beta activity inParticulates of continuous air various matricessampling through glassfiber filter paper Env. Inc., SPM-1 Sampling Procedure ManualAir Gamma Quarterly composite of TBE, TBE-2007 Gamma emitting radioisotope analysisParticulates Spectroscopy each stationEnv. Inc., SPM-1 Sampling Procedure ManualAir Iodine Gamma One-week composite TBE, TBE-2007 Gamma emitting radioisotope analysisSpectroscopy of continuous airsampling through Env. Inc., SPM-1 Sampling Procedure Manualcharcoal filterMilk 1-131 Bi-weekly grab sample TBE, TBE-2012 Radioiodine in various matriceswhen cows are onpasture.

Monthly allother times Env. Inc., SPM-1 Sampling Procedure ManualMilk Gamma Bi-weekly grab sample TBE-2007 Gamma emitting radioisotope analysisSpectroscopy when cows are onpasture.

Monthly allother times Env. Inc., SPM-1 Sampling Procedure ManualIIIIIIIIIIIIIIIII TABLE B-2:Radiological Environmental Monitoring Program -Summary of Sample Collection and Analytical

Methods, Clinton Power Station, 2013Sample Analysis Sampling Method Analytical Procedure NumberMedium ,Food. Gross Beta Monthly grab June TBE, TBE-2008 Gross Alpha and/or gross beta activity inProducts through September

.. various matrices-Env. Inc., SPM-1 Sampling Procedure ManualFood Gamma Monthly grab June TBE, TBE-2007 Gamma emitting radioisotopes.analysis Products Spectroscopy through September Env. Inc., SPM-1 Sampling Procedure ManualGrass Gamma Biweekly My through TBE, TBE:2007 Gamma emitting radioisotopes.ahalysis Spectroscopy October *.-.. __ Env. Inc., SPM-1 Sampling Procedure ManualOSLD Optically Stimulated Quarterly OSLDs Landauer Incorporated.

,Luminescence comprised of.twoDosimetry A1203:C LandauerIncorporated elements.

.Bz5 Figure B-1Environmental Sampling Locations Within OneMile of the Clinton Power Station, 2013IB-6 Figure B-2Environmental Sampling Locations Between One and TwoMiles of the Clinton Power Station, 2013B-7

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

... ... ..... ...F ig u re- B -3 .... .......Environmental Sampling Locations Between Two and Five Miles from the Clintorn PowerStation,:

2o13B-8 fFigure B-4Environmental.

Sampiing Locations GreaterThan FiveMiles of the Clinton Power Station, 2013B-9 Intentionally left blank I APPENDIX CDATA TABLES AND FIGURES -PRIMARY LABORATORY Intentionally left blank Table C-I.1CONCENTRATIONS OF 1-131 IN SURFACE WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMACL-90COLLECTION PERIOD12/26/12

-01/30/1301/30/13

-02/27/1302/27/13

-03/27/1303/27/13

-04/24/1304/24/13

-05/29/1305/29/13

-06/26/1306/26/13

-07/31/1307/31/13

-08/28/1308/28/13

-09/25/1309/25/13

-10/30/1310/30/13

-11/27/1311/27/13

-12/26/13< 0.5< 0.5< 0.7< 0.7< 0.6< 0.5 (1)< 0.6< 0.7< 0.5< 0.6< 0.7< 0.4MEANTable C-1.2CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMAUCOLLECTION PERIOD01/30/13

-03/27/1304/24/13

-06/26/1307/31/13

-09/25/1310/30/13

-12/26/13CL-90CL-13CL-91CL-99< 182< 191 (1)< 163< 163< 183< 193< 167< 167< 182.,< 194< 165< 166< 182 (1)< 190 (1)< 166 (1)< 167 (1)MEAN(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-1 Table C-1.3CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITE COLLECTION PERIODBe-7K-40 Mn-54Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137Ba-140La-140 Ce-144CL-13 01/30/13

-02/27/13

-03/27/13

-04/24/13

-05/29/13

-06/26/13

-07/31/.13

-08/28/13

-09/25113

-10/30/13

-1 1/27/13 -12/26/13

-MEAN01/30/1302/27/1303/27/1304/24/1305/29/1306/26/1307/31/1308/28/1309/25/1310/30/1311/27/1312/26/1301/30/1302/27/1303/27/1304/24/1305/29/1306/26/1307/31/1308/28/1309/25/1310/30/1311/2.7/13 1.2/26/13

< 61< 28< 30< 34< 32< 17< 33< 15< 48< 35< 40< 34,< 48< 77< 5857 +< 44.< 29< 8122 +< 49< 3180+/-< 69<5<3<342 <4<4<.2<419 < 1<5<451 < 4.<353 +/- 58<5<3<3<3<.4<2<4<2<5< 4.<4<4<4<3<4<3<4< 2< 3< 2<4<4<4<4< 13<7<7< 8<7<4<6< 3.< 12<7< 10<7<7<8< 11<7<7<4<8<5< 9< 12< 11<8<5<3<3<4<4<2<4<1<6<4<5<3<4<4<5<3<4<2<4<2<4<5<4<3< 10<7<6<5<8<4<8<3< 10< 8<9<7< 13<7<9<7< 8<3<7<4<9<7<9<7<6<3<4<4<4<2<4<2< 6.<4<5<4<4<4<5<4<4<2<4<2<5<3<5<4< 10<6<6<7.< 7.<3<.6<3< 10<8<7<6<8<7<8<6< 7<3<6<4<7<8<9<7<6<3<3<3<4<2<4<1<4<4<4<3<6<3<4<3<4<1<3<2<3<4<4<3<6<3<3<4<4< 2.<4<1<5<4<4<4<5<4<5<4<4<2<4<2<4<4<4<4< 30< 12< 23< 26*17.<13< 17< 15< 34< 28< 31< 23< 26< 16< 34< 28< 21< 12< 17< 23< 26< 29< 33< 25< 10<6<8<8<6<5<4< 5<.10<7< 11<8<5<6< 11<7<6<4<5<6< 10<8< 11<7< 55< 24< 21< 27< 33.< 12< 29< 12< 30< 30< 41< 25< 41< 25< 28< 29< 33< 11< 25< 19< 28< 23< 33< 32n)CL-9012/26/12

-01/30/13

-02/27/13

-03/27/13

-04/24/13.

-05/29/13

-06/26/13

-07/31/13

.08/28/13

-09/25/13.

-10/30/13

-11/27/13

-< 48< 33< 42< 35< 32(1) < 15< 29< 22< 36< 37< 38< 34447281653732623835563477<4<3<4< 3<4< 2< 3<2<4<2<4<3MEANTHE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES(1) SEE PROGRAM EXCEPTIONS:SECTION FOR EXPLANATION

, .. " .m m -so m n m m m m m m m- m m m m m min -M -m -m m m m m m mTable C-I.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITE COLLECTION PERIODCL-91 12/26/12

-01/30/1301/30/13

-02/27/1302/27/13

-03/27/1303/27/13

-04/24/1304/24/13

-05/29/1305/29/13

-06/26/13ý06/26/13

-.07/31/13

.07/31/1.3

-08/28/1308/28/13

-09/25/1309/25/13

-.10/30/13

'1030/13

-11/27/13.11/27/13

-12/26/13.MEANBe-7K-40 Mn-54Co-58 Fe-59Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137Ba-140La-140 Ce-144< 55< 33< 35< 42< 61<.21< 66< 17< 42<34< 43< 41< 59< 4372 +/- 4769 +/- 51< 72<..45< 62< 16< .49< 3862 +/- 50<36<7<4<4<4<7<2<7<2<5<4<4<.467 +/- 10 -<7<4<4<5<8<2<6<2<5<A<4<4<5<3<4<,4<5<2<.5<2<5<.4.< 4<2< 15<8< 10<9< 14<5< 16<4<12< 10<9<9< 10<7<9<8< 10<4.< 11<5<.9<8< 10<4<6<4<4<4<6<2<7<2<5<4<.5<4<5<4<4<4<5<2<5<2<4<4<5<1< 13<8<9<'9< 16<5< 11<3< 10<8<8<7<9<6<8<.6< 10<.4< 8<-4<.8<8<9<3<6<4<5<5<8<3<7< 2<6<4<5<5< 5<3<4<4<5< 2<6<"2<5<4<.5<2< 12<7<8<9< 13<4< 12<3< 10<7<8<7<6<3<4<4<7<2<7<2<5<4<4<4<6<4<4<4<7<2<8<2<5<4<5<4< 33< 16< 29< 34< 30<..17< 33< 17< 38< 26< 28< 31< 24< 15< 30< 30< 25< 14< 24< 19* 30< 24< 34! 21<9<5< 10< 11< 10<6< 13<6< 11<7<9<8<6<.6< 10<9<9< 4<6<7<8<7.< 11<7< 38< 31< 31< 29< 35< 12< 43< 12< 26< 28< 29< 37<34* 25< 34< 26< 42< 13< 42< 11< 33< 29< 32<9(-ICL-99 12/26/1201/30/1302/27/1303/27/1304/24/1305/29/13.06/26/13 07/31/1308/28!/13 09/25/1310/30/ 1311/27/13-01/30/13-02/27/13-03/27/13-04/24/13-05/29/13-06/26/13-07/31/13-08/28/13-09/25/13-10/30/13-11/27/13ý 12/11/13(1) < 42< 30< 42< 34< 46(1) < 18(1) < 50< 18<.40< 36< 39(1) < 14< 6548 +/- 45< 35< 35< 43< 15< 11535 +/- 3384 +/- 52< 70< .88< 27<4<4<4<4<.5<2<4<2<4<3< .5!< -1<9<6<7<7<9<3<9<4<8.< 8.<9<.3<4<3<4<4<4<2<.6<2< 4<4<4<1<5<4<4<4<6< 2<6<2<4<4<5<1" MEAN56 +/- 50THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION Table C-I1.1CONCENTRATIONS OF GROSS BETA IN DRINKING WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION.,

2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMACL-14COLLECTION PERIOD12/26/12

-01/30/01/30/13

-02/27/02/27/13

-03/27/03/27/13

-04/24/04/24/13

-05/29/05/29/13

-06/26/06/26/13

-07/31/07/31/13

-08/28/08/28/13

-09/25/09/25/13

-10/30/10/30/13

-11/27/11/27/13

-12/26/13131131313131313'13'13/13/13< 2.1< 2.3< 1.7< 1.5< 1.9< 2.1< 2.0< 2.0< 1.6 (1)< 1.7< 2.6< 1.4MEANTable C-11.2CONCENTRATIONS OF TRITIUM IN DRINKING WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMACOLLECTION PERIODCL-1412/26/12

-03/27/1303/27/13

-06/26/1306/26/13

-09/25/1309/25/13

-12/11/13< 185< 194< 166 (1)< 183IIIIIiI,IiIa!IIMEANTable C-II.3CONCENTRATIONS OF 1-131 IN DRINKING WATER SAMPLES.COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMA.COLLECTION PERIOD12/26/12

-01/30/01/30/13

-02/27/02/27/13

-03/27/03/27/13

-04/24/04/24/13

-05/29/05/29/13

-06/26/.06/26/13

-07/31/07/31/13

-08/28/08/28/13

-09/25/.09/25/13

-10/30/r 10/30/13

-11/27/11/27/13

-12/26/CL-14I1313/1313'13'13'13'13'13'13'13'13< 0.5< 0.7< 0.6< 0.7< 0.5< 0.6< 0.6< 0.8< 0.5 (1)< 0.6< 0.8< 0.6r,MEAN(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-4 Sm -m -m m -m man m m- -mmTable C-II.4 CONCENTRATIONS OF GAMMA EMITTERS IN DRINKING WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITE COLLECTION PERIODCL-14 12/26/12

-01/3001/30/13

-02/2702/27/13

-03/2703/27/13

-04/2404/24/13

-05/2905/29/13

-06/2606/26/13

-07/3107/31/13

-08/2808/28/13

-09/2509/25/13

-10/3010/30/13

-11/2711/27/13

-12/26Be-7K-40 Mn-54c6-58 Fe-59Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144/13/13/13/13/13/13/13/13/13/13/13/13< 53< 37< 31< 35< 46< 22< 35< 20(1) < 38< 25< 48< 33< 60< 96< 35< 3271< 46< 76< 33< 76< 8468< 20<5<4<3<3+56 < 5<2<4<2<4< 3+/-57 < 5<3<5<.4<4.<4,<.5<2 "<-'4.<:2<5<-.3< 10<8<8<8< 11<5<7<5< 10<4< 12<8<6<5<3<4<5<2<4<2<4<3<5<3< 10< 10<5<7< 10<5<7<4<8<8<9<6<6<5:< 4..< 4"<5< 2< 4.< 2<4<.3<.6< 3<8<9<6<7<9<4<7<4<9<6< 10<8<6<4<3<3<5<2<4<2<4<3<5<3<6<5<3<3<5<2<5<2<4<3<5<4252126272617192130183727< 10<6<8<7<8<5<6<7< 10<7< 11<6< 36< 31< 26< 27< 37*17< 36< 14< 35.< 24< 38< 28MEAN69 +/- 4r)THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION Table C-I11.1CONCENTRATIONS OF TRITIUM IN WELL WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMACOLLECTION CL-12RPERIOD03/27/13

-03/27/13

< 16006/26/13

-06/26/13

< 18609/25/13

-09/25/13

< 17812/27/13

-12/27/13

< 183CL-12TCL-7D< 160< 184< 176< 186< 161< 175< 177< 183UIMEAN:C3-6 m -o- m mmm m nm mm mmmmm m mTable C-Ill.2CONCENTRATIONS OF GAMMA EMITTERS IN WELL WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITE COLLECTION Be-7PERIODCL-12R 03/27/13

< 3606/26/13

< 1809/25/13

< 4312/26/13

< 44K-40 Mn-54 Co-58 Fe-59Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144< 35< 15< 46< 39<4<2<5<4MEANCL-12T 03/27/1306/26/1309/25/1312/26/13MEANCL-7D 03/27/1306/26/1309/25/1312/27/13< 37< 20< 36< 44< 39< 17< 44< 5067 +<16< 74< 3453 <3<2<4<5<4<2<5<5<5<2<4<5<4<2<4<6<7<4<11<9<7<4< 10< 10<9<4<9<9<4<2<4<4<4<2<4<6<4<2<5<6641088471083912<4<2<5<5<4<2<4<6<4<2<5<6<7<4<8<8<8<4<7<8<6<4<8<9<4<2<4<4<4<2<4<5<4<2<4<5<4<2<4<5<4<2<4<5<4<2<4<6< 31< 14< 30< 29< 29< 16< 28< 29< 28<13< 31< 35<8<4< 10<7<9<5< 1i< 12<9<4.<9.< 10< 34< 14< 37< 36201730356,,,< 37< 15< 42< 117<4<2<4<5<,.-29<-.13<'-34< 29MEAN Table C-IV.1CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITYOF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMASITECOLLECTION Be-7PERIODK-40 Mn-54 Co-58Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140La-140 Ce-144CL- 105Bluegill 04/22/13

< 926Carp 04/22/13

< 689Crappie 04/22/13

< 719Largemouth Bass 04/22/13

< 398Bluegill 10/01/13

< 777Carp 10/01/13

< 275Crappie 10/01/13

< 1166Largemouth bass 10/01/13

< 601MEAN -CL-19Bluegill 04/22/13

< 496Carp 04/22/13

< 561Channel Catfish 04/22/13

< 570Largemouth Bass 04/22/13

< 512Bluegill 10/01/13

< 619Carp 10/01/13

< 650Channel Catfish 10/01/13

< 615Largemouth Bass 10/01/13

< 687MEAN -3058 +/- 1090 < 92 < 864348 +/- 878 < 58 < 573475 +/- 875 < 65 < 764128 +/- 882 < 48 <412622 +/- 698 < 70 < 831324 +/- 742 < 35 < 276694 +/- 1402 < 86 < 1243874 +/- 664 < 54 < 703690 +/- 3105 --2920 +/- 779 < 41 < 534404 +/- 905 < 60 < 814102 +/- 1048 < 57 < 663656 +/- 725 < 48 < 543039 +/- 813 < 54 < 684494 +/- 818 < 61 < 763056 +/- 823 < 57 < 703439 +/- 1040 < 67 < 68< 175< 157< 165< 136< 199< 105< 216< 151< 77< 54< 74< 50< 84< 34< 108< 63< 143< 127< 146< 99< 148< 53< 174< 125< 88< 71< 77< 56< 74< 37< 134< 73< 171< 125< 123< 69< 140< 64< 211< 114< 75 < 80< 65 < 63< 64 < 65< 33 < 49< 57 < 73< 27 < 32< 77 < 99< 59 < 53< 937< 699< 844< 566< 1122< 489< 1550< 1017< 161< 185< 227< 209< 360< 163< 386< 248< 591< 418< 415< 230< 485< 234< 895< 3590.< 133< 149< 128< 126< 139< 164< 154< 181< 39< 65< 57< 62< 58< 56< 46< 66< 94< 137< 123< 117< 112< 131< 95< 147< 60< 81< 64< 62< 65< 71< 69<84< 100< 134< 126< 112< 124< 131< 145< 132< 48 < 46< 64 < 65< 49 < 53< 49 < 53< 45 < 50< 46 < 62< 60 < 54< 70 < 69< 456< 727< 577< 673< 917< 995< 945< 1149< 138< 271< 195< 170< 302< 414< 294< 418< 254< 323< 240< 233< 273< 446< 618< 3383639 +/- 1262M Mm Mm M m go -M -m -mm m m m mmmm m m-m- m ---mTable C-V.1CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/KG DRY

2 SIGMASITE COLLECTION Be-7PERIODCL-07B 04/22/13

< 33210/01/13

< 498MEAN -CL-105 04/22/13

< 42910/01/13

< 386K-40 Mn-54 Co-58 Fe-59 Co-60Zn-65Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-1447632 +/- 902 < 357681 +/- 857 < 497657 +/- 69< 33 < 65 < 42 < 88 < 35 < 60 < 27 < 32 < 291 < 82 < 179< 50 < 144 < 45 < 114 < 61 < 103 < 41 < 45 < 933 < 265 < 264< 43 < 106 < 62 < 107 < 54 < 90 < 38 < 44 < 301 < 93 < 307< 46 < 108 < 41 < 84 < 43 < 74 < 30 < 30 < 654 < 156 < 18412730 +/- 1106 < 477834 +/- 794 < 34MEAN" 10282 +/- 6924 --.-S.*.

Table C-VI.1CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLESCOLLECTED-IN THE VICINITY OF CLINTON-POWER

STATION, 2013RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMAGROUP ICOLLECTION PERIODCL-2CL-3CL-46L-6CL-15.CL-94PERIOD0110211301/09/1301/16/1301/23/1301/30/1302/06/1302/13/1302/20/1302/27/1303/06/1303/13/1303/20/1303/27/1304/03/1304/10/1304/17/1304/24/1305/01/1305/08/1305/15/1305/22/1305/29/1306/05/1306/12/1306/19/1306/26/1307/03/1307/10/1307/17/1307/24/1307/31/1308/07/1308/14/1308/21/1308/28/1309/04/1309/11/1309/18/1309/25/1310/02/1310/09/1310/16/1310/23/1310/30/1311/06/1311/13/1311/20/1311/27/1312/04/1312/11/1312/18/1312/26/13-01109113-01/16/13-01/23/13-01/30/13-02/06/13-02/13/13-02/20/13-02/27/13-03/06/13-03/13/13-03/20/13-03/27/13-04/03/13-04/10/13-04/17/13-04/24/13-05/01/13-05/08/13-05/15/13-05/22/13-05/29/13-06/05/13-06/12/13-06/19/13-06/26/13-07/03/13-07/10/13-07/17/13-07/24/13-07/31/13-08/07/13-08/14/13-08/21/13-08/28/13-09/04/13-09/11/13-09/18/13-09/25/13-10/02/13-10/09/13-10/16/13-10/23/13-10/30/13-11/06/13-11/13/13-11/20/13-11/27/13-12/04/13-12/11/13-12/18/13-12/26/13-01/01/1449 +/- 624 +/- 520 +/- 531 +/- 533 +/- 520 +/- 420 +/- 415 +/- 415 +/- 416 +/- 417 +/- 512 +/- 418 +/- 417 +/- 412 +/- 412 +/- 416 +/- 512 +/- 415 +/- 519 +/- 410 +/- 49+/-418 514 413 415+/- 48+/-413+/- 415+/- 414 +/- 421 +/- 418 +/- 430 +/- 524 +/- 516 +/- 436 +/- 515 +/- 419 +/- 522 +/- 521 +/- 424 +/- 516 +/- 420 +/- 430 +/- 514 +/- 418 +/- 516 +/- 438 +/- 629 +/- 535 +/- 529 +/- 428 +/- 647 +/- 622 +/- 523 +/- 537 +/- 632 +/-521 i419+/- 413+/- 49+/-415+/-421 +/-514+/- 417+/- 517 57+/-411 +/-421 +/-514 +/-411 +418 414+/- 48+/-416 411 +/-421 +/-515 +/- 415 +/- 512 +/- 414 +/- 414 +/- 423 +/- 519 .+/- 425 +/- 520 +/- 523 +/- 530 +/- 516 +/- 420 +/- 525 +/- 520 +/- 422 +/- 514 +/- 419 +/- 426 +/- 518 +/- 411 +/-419+/- 443 +/-632 +/-5.40 +/-626 +/-431 +/-653 +/- 620 +/- 519 +/- 536+/- 632 +/-524-+/- 515+/- 418 +/--414 +/- 414 +/- 414+/- 514 +/- 421 +/- 520.+/- 510 +/- 412 +/-419 +/- 512+/- 414 421 +48+/-49 +/-414++/- 411 +/-'421 +/- 515 +/- 411.+.511 +/-413 +/-+413 +/- 424 +/- 517 +/-"421 +/- 418 522 +/- 539 +/- 515 +420+/- 529 +/-515 +/- 423.+/- 418 + 420 +/-432 +/-'517+/- 417+/- 419+/- 443 +/-.636 +/- 539;+/- 628 +/- 433 +/- 651 +/- 620 +/- 422 +/-539 632 +/-519 +/-4'21 +/-4'16+/- 514+/- 425 +/-516+/- 512+/- 415 +/- 419 510+/- 414+/- 416+/- 513+/- 418+/- 523 +/-515+/- 4<621 +/-512 +/- 423+/- 5(1) 9+/- 414+/- 59+/-314 410+/- 420+/- 420+/- 415+/- 421 +/-520+/- 431 +/-513+/- 4(1) 22+/- 524+/- 515+/- 423+/-519+/- 423 +/-427 +/-517+/- 414+/- 423 +/-540 +/-634 +/- 535 +/- 625 +/- 4z26 +/- 547 +/- 622 +/- 520 +/- 535 +/- 628 +/- 522 +/- 421 +/- 413 +/- 416 +/- 414+/- 418+/- 512+/- 418+/- 417 4'7+/-414+/- 418 410+/- 412+/- 418 +/- 47+/-410 +/-4'19 +/-515+/- 413+/- 4(1) 12+/- 411 5.14+/- 415+/- 415 +/- 4(1) 19 +/- 416 +/- 424 +/- 5122 +/- 520 +/- 431 +/- 517+/- 4(1) 20 +/- 526 +/-515+/- 422 +/-415+/- 421 +/-425 +/- 514 +/- 414 +/- 422 +/- 436 +/- 5(1) 35 +/- 5(1) 35 +/- 522 +/- 429 +/- 651 +/- 6(1) 22 +/-'521 +/- 532 +/- 535 +/- 525 +/-.520 +/-417 +/- 513 +/- 414 +/-422 +/- 512 +/-420 +/- 523 +/- 514 +/-414+/- 418 +/-514+/- 411 +/-4'21 -410- 4(1) 9+/- 421.+/- 517+/- 4:18+/- 513+/- 415 +/-513+/- 419 +/-417+/- 421 +/-416+/- 428 +/-521 +/-526 +/- 533 +/- 516 +/- 522 +/- 525 +/- 515 +/- 424 '+/- 5(1) 15 +/- 420 +/- 423 +/- 516.+/- 412 +/- 424 +/- 540 +/- 633 +/- 531 +/- 525 +/- 428 +/- 6(1)(1)IIUIUII1IISIIIIIIII(1)MEAN20 +/- 17 20 +/- 17 21 +/- 19 20 +/- 17 19 +/- 16 21 +/- 16THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-1O Table C-VI.1CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMAUCOLLECTION PERIOD01/02/13

-01/09/1301/09/13

-01/16/1301/16/13

-01/23/1301/23/13

-01/30/1301/30/13

-02/06/1302/06/13

-02/13/1302/13/13

-02/20/1302/20/13

-02/27/1302/27/13

-03/06/1303/06113

-03/13/1303/13/13

-03/20/1303/20/13

-03/27/1303/27/13

-04/03/1304/03/13

-04/10/1304/10/13

-04/17/1304/17/13

-04124/1304/24/13

-05/01/1305/01/13

-05/08/1305/08/13

-05/15/1305/15/13

-05/22/1305/22/13

-05/29/1305/29/13

-06/05/1306/05/13

-06/1.2/13 06/12/13

-06/19/1306/19/13

-06/26/1306/26/13

-07/03/1307/03/13

-07/10/1307/10/13

-07/17/1307/17/13

-07/24/1307/24/13

-07/31/1307/31/13

-08/07/1308/07/13

-08/14/1308/14/13

-08/21/1308/21/13

-08/28/1308/28/13

-09/04/1309/04/13

-09/11/1309/11/13

-09/18/1309/18/13

-09/25/1309/25/13

-10/02/1310/02/13

-10/09/1310/09/13

-10/16/1310/16/13

-10/23/1310/23/13 10/30/1310/30/13

-11/06/1311/06/13

-11113/1311/13113

-11/20/1311/20/13

-11/27/1311/27/13

-12/04/1312/04113

-12/11/1312/11/13

-12/18/1312/18/13

-12/26/1312/26/13

-01/01/14MEANUCL-148+/-" 621 1 520 +/- 527 +/- 531 +/- 520 +/- 421 +/- 414+/-419 +/- 514 +/- 423 +/- 511 +/-419 417 4.11 410 415 412 413 423 +411 +/-48+/-414+/-411 +413 +/- 414 +/- 412 +/- 512 +/- 414 +/- 4,13 +/- 417 +/- 420 +/- 421 +/- 4.22 +/- 518+/-433 +/- 514+/- 415+/- 421 +/-516+/- 424 +/- 5114+/- 417+/-427 +/-518 +/-4.14 +/-4.22 +/-439 +/-627 +/-5-44 +/- 6.25 +/- 429 +/- 619 +/- 17GROUP IICL-757'+/- 6-23 +/-522 +/- 533 +/- 631 +/- 522 +/- 421 +/-4.19 +/- 513 +/- 412 +/- 417 +/- 514 +/- 417 +/- 418+/-4.9+/-411 +416 +/-512+/- 4:12+/- 421 +/-4(1) 11 +/-4< 6 (1)16 +/- 48+/-4.14 +/-4-10+/-412+/- 59+/-314 +/-411 +/-420 +/-4.21 +/-4.21 +/-4:.18 +/- 517 +/- 432 +/- 5,.11 +/-4.22 +/- 519+/- 415 4.24 +/-515+/- 421 +/-426 +/-5.19+/- 413 + 418+/- 438 +/-634 +/-534 +/-529 +/-426 +/-6-,19 +/-18I GROUP IIICL-847 +/-6(1) 19 +/- 5 1)22 +/- 535 +/- 635 +/- 524 +/- 519 +/- 419 +/- 59.+/- 414 +/- 414 +/-.511 +/-415+/- 417+/-7 (1)7 +/-410+/- 418+/- 510+/-411,+/-5 (1)15+/-4 (1)11 +/-4,10 +/-.5 (1)15 412 +/-4-17.-+/- 511 +/-.417 +/- 513 +/-.414.+/- 416.+/- 420 +/-.4.21 +/-4..28.+/- 522 +/- 521 +/- 537 +/- 514 +/-4.18 +/- 4ý.23 +/-519+/-424 +/-.5-(1) 15 +/-.4 (1)23.+/- 423 +/- 516 +/- 417.+/-423 +/- 443 +/- 637 +/- 531.+/- 524 +/- 4ý:.25 +/- 520 +/- 17CL-1151 620 i 418+/- 430 32 +/-519+/- 420 +/-419 +/- 416 +/- 413 +/- 416 +/- 5.14 +/- 416 +/- 422 +/- 58+/-412+/- 422 +/- 513 +/-4.19+/- 519 +/-4-11 +/-410+/- 414+/- 411 414 +/-4-12 4.11 +/-513+/- 418+/- 415+/- 421 +/-4.18+/- 430 +/- 52.1 +/- 5.20 +/- 438 +/- 516 +/- 423 +/- 527 +/- 519 +/- 426 +/- 516 +/- 426 +/- 530 +/- 517 +/- 415 +/- 4.21 +/- 440 +/- 636 +/- 540 +/- 624 +/-424 521 +/- 17(1)THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE, POSITIVE VALUES(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION c-I.I Table C-VI.2MONTHLY AND YEARLY MEAN VALUES OF GROSS BETA CONCENTRATIONS IN AIRPARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMAGROUP I -ON-SITE LOCATIONS GROUP II -INTERMEDIATE DISTANCE LOCATIONS GROUP III -CONTROL LOCATIONS COLLECTION PERIODMIN MAX MEAN+.2SDCOLLECTION PERIODMIN MAX MEAN+2SDCOLLECTION-PERIODMINMAXMEAN +/-2SDm I01/02/1301/30/1302/27/1304/03/1305/01/13' 0512911307/03/1307/31/13.

09/04/1310/02/1310/30/1312/04/1301/30/1302/27/1304/03/1305/01/1305/29/13.

07/03/1307/31/1309/04/1310/02/1310/30/1312/04/1301/01/141.139.77.8.81513141122533525232323.19303924.434032 +/- 2422 +/- 1316 +/- 715 +/- 914 ..+/- 8-14 +/- 913 +/- 521 +/- 723 +/- 1419 +/- 723 +/- 2031 +/- 9U lUzi 13.01/30/1302/27/1304/03/1305/01/1305/29/1307/03/1307/31/1309/04/1310/02/1310/30/1312/04/13.

U 11U i 302/27/1304/03/1305/01/1305/29/1307/03/i13 07/31/1309/04/1310/02/1310/30/1312/04/1301/01/14149710891711141324352318231717283724434431231513.1312.132022192430+/- 26+/- 13+/-7+/-8+/-9+/-6+/-4+/-5+/-17+/-8+19+/-1201/02/1301/30/1302/27/1304/03/1305/01/1305/29/1307/03/1307/31/1309/04/1310/02/1310/30/1312/04/13-01/30/13-02/27/13-04/03/13-05/01/13-05/29/13-07/03/13-07/31/13-09/04/13-10/02/13-10/30/13-12/04/13-01/01/1418191381110111816161524513216221914183038264040292215161512142226222431+/-+/-+/-+/-+/-++/--I+/-+/-+/-+/-301331394691910211601/02/13

-01/01/147. 53 20 +/- 1701/02/13

-01/01/147 57 20. +/- 1701/02/13

-01/01/148 51 21 +/- 17mm -f ým -m mm-mm=ý m m m m m m m m m m m " m -m m = =Table C-VI.3CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMASITE COLLECTION PERIODBe-7 K-40 Co-60 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141Ce-144CL-1 01/02/1304/03/1307/03/1310/02/13MEANCL-11 01/02/1304/03/1307/03/1310/02/13MEANCL-15 01/02/13.04/03/13 07/03/1310/02/13MEANCL-2 :01/02/13 04/03/1307/03/13* 10/02/13MEANCL-3 01102/1304/03/1307/03/1310/02/1304/03/1307/03/1310/02/1301/01/1404/03/1307/03/1310/02/1301/01/1404/03/1307/03/1310/02/13*01/01/14 04/03/1307/03/1310/02/1301/01/14.04/03/13

.07/03/13 10/02/1301/01/1454688962+ 36+ 22+ 30+ 1968 +/- 30< 35< 43< 48< 38< 62< 39< 50< 50223270909857+/-44+/- 23+/- 29+/- 30323279 +/- 37 -<4<3<4<3<7<3<5<3< 12<4<7<6<9<5<6<.4<6<4<7<580596135+/- 29+/- 27+/- 21+/- 1859 +/- 37< 8084 +/- .22:88 +/- 2470 +/-. 27< 42< 21< 43<41* 27< 44< 35< 54< 37< 54< 33< 31233280 +/- 19<4<3<3<4<2<4<4<4<4<3<3<3<<5.< 3<3.< 4< 4<"3<5<5<8<3<4<4<11<2<4<4<5<3<5<2< 10<.4<3<,4<5<5'< 5<6< 17< 23< 15< 20< 31< 23< 25< 18< 18< 18< 23< 17< 23< 23< 17< 20< 20< 24< 35< 27<2<2<2<2<4<2<3<2<2<2<3<1<3<3<2<3<2<3<2<2<4<2<3<2<2< 2.<2< 1.< 10<5<6<5< 14<4<7<5< 12< 7.<7<.4< 14<6<4<6<10.< 6<6'.< .8<9< 4<8<9< 15<8< 15< 119101413....S. 3< 2<2,< 3< 16< 15<8< 13<9< 11< 15< 1710161295379..4753+/- 32+/- 29+/- 33+/- 41<2 <2 <10<2"' <;3 <5<3 <4 <8<4 <4 <8MEAN58 +/- 29 -THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES Table C-VI.3CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMASITE COLLECTION PERIODCL-4 01/02/13

-04/0304/03/13

-07/0307/03/13

-10/0210/02/13

-01/01Be-7 K-40 Co-60 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 Ce-144/13/13/13/14100 + 3098 + 32103 + 3053 + 19< 34< 71< 41< 39MEANCL-6 01/02/1304/03/1307/03/1310/02/1304/03/1307/03/1310/02/1301/01/14

-88 47 -< 75 < 6489 +/-27 < 3960 +/-25 < 2147 +/-20 < 32MEAN#biCL-7 01/02/13

.-04/03/13 007/03/13

-110/02/13

-MEANCL-8 01/02/13

-04/03/13

-.-007/03/13

-110/02/13

-014/03/1317/03/130/02/1311/01/1414/03/1317/03/1310/02/131101/1466 +/- 4370 +/- 3372 +/- 2585 +/- 2548 +/- 1969 3194 +/- 4052 +/- 2675 +/- 2142 +/- 18<3<4<2<1<4<3<3<2<2<3<2<3<3<4<3<2..<10<3<4<3<6<3<3<2< 11<9<5<6<.15<6<7<7-<9<6<7<3<8<5<4<4< 13<3<5<4<:8.<.3<6<3<10< 4<4<4< 40* 52< 49< 39* 21* 63< 37* 38<4<4<4<3<6<5<3<3<3<3< 3.<4* 26< 34< 28<16< 37* 24* 28< 25< 27* 26< 34<1318* 27* 21* 21<3<4<3<2<4<2<3< 3.<2< 3<3<2<3<4<3<3<2<2<2<4<2<3<3<2<3<3<3<2<4<3<3<3< 12<6<6<514<5<6<.5< 14<5<8<4< 14<8<5<5< 12<4<5<6<11* 14*13<11<15<11*12<12<12<11<17<10* 12*17<11* 12* 12* 13<11<13<13<8< 6.<6MEANCL-94 01/02/1304/03/1307/03/1310/02/1366 +/- 46 -<3<3<2<2<2<2<2<304/03/1307/03/1310/02/13o1/01/1463 +/- 3194 +/- 2782 +/- 2261 +/- 30< 32< 37< 49< 31<2'< 2<2<.3< 10<4<5<8<7<2<4<5< 28< 19< 14< 35MEAN75 +/- 32 -THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUESm m m urn m m-m m m m n m m-m mm Table C-VII.1CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMACOLLECTION PERIOD01/02/13

-01/09/1301/09/13

-01/16/1301/16/13

-01/23/1301/23/13

-01/30/1301/30/13

-02/06/1302106/13

-02/13/1302/13/13

-02/20/1302/20/13

-02/27/1302/27/13

-03/06/1303/06/13

-03/13/1303/13/13

-03/20/1303/20/13

-03/27/1303/27/13

-04/03/1304/03/13

-04/10/1304/10/13

-04/17/1304/17/13

-04/24/1304/24/13

-05/01/1305/01/13

-b5/08/1305/08/13

-05/15/1305/15/13

-05/22/1305/22/13

-05/29/1305/29/13

-06/05/1306/05/13

-06/12/1306/12/13

-06/19/1306/19/13

-06/26/1306/26/13

-07/03/1307/03/13

-07/10/1307/10/13

-07/17/1307/17/13

-07/24/1307/24/13

-07/31/1307/31/13

-08/07/1.3 08/07/13

-08/14/1308/14/13

-08/21/1308/21/13

-08/28/1308/28/13

-09/04/13:

09/04/13

-09/11/1309/11/13

-09/18/1309/18/13

-09/25/1309/25/13

-.10/02/13 10/02/13

-10/09/1310/09/13

-10/1611310/16/13

-10/23/1310/23/13

-10/30/1310/30/13

-11/06/1311/06/13

-11/13/1311/13/13

-11/20/1311/20/13

-11/27/1311/27/13

-12/04/1312/04/13

-12/1.1/13 12/11/13

-12/18/1312/18/13

-12/26/1312/26/13

-01/01/14MEANUL-2< 18< 32< 34< 29< 37< 38< 25< 47< 33< 46< 34< 36< 47< 23< 30< 40< 41< 48< 35< 52< 20< 51< 59< 49< 38< 49< 65< 36< 45< 46< 55< 54< 57< 22< 52< 57< 17< 66< 63< 46< 15< 51< 63< 59< 57< 61< 65< 11< 38-< 62< 66< 33CL-3< 48< 32* 13* 30* 37* 38* 26<47* 34* 46* 36* 36* 49* 23* 31* 40* 42* 49* 34* 52* 53* 50* 23* 49* 41<49<65* 38* 45<45* 56<54* 58* 22* 52*58* 17* 65* 65.<46* 36* 50<24<.59< 58< 61< 65<-31 -< 39< 62.< 65< 33C.L-4< 46< 33< 34< 30< 14< 38< 25< 45< 36< 45< 34< 36< 47< 22< 30< 40< 40<.48< 34< 52< 51<* 50< 61< 49< 15< 50< 65< 36< 45< 44< 56< 53< 55< 23< 53< 56< 18< 66< 61< 44< 35< 49< 62< 58< 22< 60< 66< 30< 38< 61< 64< 31GROUP ICL-6< 48< 32< 34< 32< 36< 38<9< 48< 37< 32< 35< 36< 48< 27< 30< 39< 41< 49< 34< 52< 53< 51< 62< 49< 40(1.) <49 (1)<.27< 35< 47< 43<'58 (1)< 54< 21< 23<.53< 56< 18(1) < 67 (1)< 64< 46< 37< 51< 60< 59< 57< 60< 26<30S .<41 (1)< 64 (1)< 66< 33CL-15< 33< 42 (1)< 34< 36< 31< 68< 30< 38< 27< 21< 42< 44< 44< 19< 18< 45< 40< 43.< 31< 45< 50< 43 (1)< 28< 49< 44< 53< 66< 36< 50< 37< 67< 42< 53< 40< 26< 56< 18< 58< 63< 48< 49< 45 (1)< 58< 54< 52< 58< 55< 25< 44< 66< 69< 37CL-94< 33< 42 (1)< 33< 34< 31< 66< 30< 39< 27< 21< 42< 44< 44< 18< 48< 43< 18< 43< 30< 44< 50< 42 (1)< 27< 48< 43< 52< 66< 34< 50< 35<' 67< 43< 52< 42< 64< 54< 12< 59< 63< 49< 51< 47 (1)< 56< 55< 51< 55< 53< 26< 42< 64< 70* 37(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C.15 Table C-VII.1CONCENTRATIONS OF 1-131 IN.AIR IODINE SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF E73.PCI/CU METER +/- 2 SIGMAUCOLLECTION PERIOD01/02/13

-01/09/1301/09/13

-01/16/1301/16/13

-01/23/1301/23/13

-01/30/1301/30/13

-02/06/1302/06/13

-02/13/1302/13/13

-02/20/1302/20/13

-02/27/1302/27/13

-03/06/1303/06/13

-03/13/1303/13/13

-03/20/1303/20/13

-03/27/1303/27/13

-04/03/1304/03/13

-04/10/1304/10/13

-04/17/1304/17/13

-04/24/1304/24/13

-05/01/1305/01/13

-05/08/1305/08/13

-05/15/1305/15/13

-05/22/1305/22/13

-05/29/1305/29/13

-06/05/1306/05/13

-06/12/1306/12/13

-06/19/1306/19/13

-06/26/1306/26/13

-07/03/1307/03/13

-07/10/1307/10/13

-07/17/1307/17/13

-07/24/1307/24/13

-07/31/1307/31/13

-08/07/1308/07/13

-08/14/1308/14/13

-08/21/1308/21/13

-08/28/1308/28/13

-09/04/1309/04/13

-09/11/1309/11/13

-09/18/1309/18/13

-09/25/1309/25/13

-10/02/1310/02/13

-10/09/1310/09/13

-10/16/1310/16/13

-10/23/1310/23/13

-10/30/1310/30/13

-11/06/1311/06/13

-11/13/1311/13/13

-11/20/1311/20/13

-11/27/1311/27/13

-12/04/1312/04/13

-12/11/1312/11/13

-12/18/1312/18/13

-12/26/1312/26/13

-01/01/14GROUP IICL-1 CL-7I GROUP IIICL-8 CL-11< 47< 17< 34< 29< 37< 23< 25< 18< 33< 46< 13< 22< 47< 22< 16< 22< 16< 17< 13< 20< 53 (1)< 19< 59< 19< 40< 19< 65< 14< 17< 18< 30< 29< 55<8< 20< 24<7< 27< 22< 25< 36< 20< 64< 23< 57< 24< 65< 29< 15< 34< 28< 19< 18< 19 (1)< 14< 32< 14< 34< 13< 15< 16< 32< 42< 23< 44< 26< 48< 23< 44< 19< 31< 19< 22< 19 (1)< 12< 27< 18< 22< 35< 15< 20< 16< 65< 18< 52< 15< 63< 28< 18< 31< 22< 26< 21< 19 (1)< 24< 23< 22< 24< 22< 11< 17< 27< 69< 13< 33< 43 (1)< 33< 31< 31< 67< 30< 36< 37< 32< 18< 44< 44< 33 (1)< 51< 44< 42< 43< 24 (1)< 48 (1)< 50< 46 (1)< 29< 50< 45< 53< 66< 36< 51< 36< 28< 42< 53< 42< 64< 55< 18< 58< 62< 48< 50< 46 (1)< 58< 55< 50< 58< 53< 26< 42< 65< 29< 38< 34< 40< 34< 34< 33< 67< 30< 36< 28< 21< 41< 45< 15< 27< 47< 43< 43< 42< 30< 44< 49< 44 (1)< 28< 48< 43< 53< 66< 37< 49< 35< 67< 42< 53< 42< 64< 54< 18< 57< 65< 48< 50< 45< 59< 55< 52< 56< 52< 25< 42< 64< 66< 38IIUI3IIUUIIIIIIIIIIMEAN(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-46 Table C-VIII.1CONCENTRATIONS OF 1-,131 IN MILK SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS: OF PCI/L1TER

+/- 2 SIGMACONTROL FARMCOLLECTION CL-116PERIOD01/30/13

< 0.902/27/13

< 0.603/27/13

< 0.804/24/13

< 0.505/08/13

< 0.605/22/13

< 0.806/05/13

< 0.606/19/13

< 0.707/03/13

< 0.707/17/13

< 0.907/31/13

< 0.708/14/13

< 0.808/28/13

< 1.009/11/13

< 0.409/25/13

< 0.510/09/13

< 0.610/23/13

< 0.711/06113

< 0.911/27/13

< 0.712/26/13

< 0.6MEAN.C-17 Table C-VIII.2CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITE COLLECTION Be-7PERIODK-40 Mn-54 Co-58Fe-59 Co-60 Zn-65 Nb-95 Zr-95Cs-134 Cs-137 Ba-140 La-140Ce-144CL-116 01/30/13

< 5402/27/13

< 4803/27/13

< 3704/24/13

< 5805/08/13

< 6005/22/13

. < 52'06/05/13

< 4106/19/13

< 52*07/03/13

< 3607/17/13

< 5107/31/13

< 5208/14/13

< 7308/28/13..

< 4909/11/13

< 50S.09/25113

< 5310/09/13

< 5410/23/13

< 5811/06/13:

< 6011/27/13

< 37*12/26/13

< 501293 +/- 138 < 6 < 71187 +/- 125 < 6 <61261 +/- 117 < 5 < 61181 +/- 121 < 6 < 61116 +/- 125 < 5 <<61195 +/- 131 < 6 ... < 61126 +/- 107 <4 -<51201 +/- 163 <6 < 61019+/- 105 <5 < 51346 +/- 139 < 6-. < 5.:1412-+/- 131 ;:6 * < 51374"+/- 156 < 7 < 81325 +/- 120 < 6 < 61322 +/- 143 <.5 <61067.1 156 < 6 < 61214 +/- 132 < 6 < 71351 +/- 124 <6 < 71188 +/- 163 < 8 < 81322 +/- 108 < 4 < 51335 +/- 122 < 5 < 5"< 14< 12< 11< 15< 17* 14*10< 15<9< 13< 13< 16< 15*16< 15< 15< 15* 15< 11< 13<6<8<5<7<7<7<.5< 10<5<.7<9<7<7<6<7<6<9<5<7< 14< 11< 10< 12< 14< 11< 11< 15< 10< 12"< 15< 17< 13< 14< 15* 15< 15< 19<8< 13<7 <10<6 <10<5 <9<7 <12<6 <12<6 * <10<5 <8<7 " <12<5 <7<5 <10< 6 < 10-<8 <12'<6 <10<7 <13<7 <11<6 <12<7 <12<9 <14<4 <7<7 <10<5<5<5<6<5<6<4<6<4<6<5<7<5<5<5<5<6<6<3< 5<6<6<5<7<5<6<5< 7<4<6<7<7<7<6<6<7<6<7<4<6< 39< 28< 31< 41< 50< 42< 25< 30< 30< 27< 30< 36< 41< 38< 42< 33< 50< 38< 35< 38< 10<7<9< 12< 15< 11<7< 11<9<7.<9< 11< 11< 14< 12< 10< 12< 12.< 11< 11< 45< 43< 42< 56< 31< 40<34< 41< 33< 40< 48< 68* 40< 35< 39< 33< 48< 44< 28.< 3000MEAN1242 +/- 217m m --m = m l m l m m m ---t mu -mu -mu -l --m iTable C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMASITE COLLECTION PERIODCL-114 06/26/13 Cabbage06/26/13 Lettuce06/26/13 Swiss Chard07/31/13 Cabbage07/31/13 Lettuce07/31/13 Swiss Chard08/28/13..

Cabbage08/28/13 Kale08/28/13 Swiss Chard09/25/1-3 Cabbage09/25/13.

Swiss Chard -09/25/,13.-

Tree leaves. (1)Be-7K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95Zr-951-131 Cs-134 Cs-137 Ba-140 La-140 Ce-1444623535411972933924667376207181.653+/- 140+/- 94+/- 149+/- 89+/- 177+ 111+ 27+/- 41+/- 58+/- 93+/- 100+/- 156483637557816337254155332280435528335699976307145+/- 305+/- 270+/- 402+/- 270+/- 463+/- 397+/- 102+/- 130+/- 195+/- 292+/- 291+/- 286MEANCL-1 15 06/26/13

'.Cabbage 06/26/13 Lettuce06/26/13.,

Swiss Chard07/31/13 Cabbage07/31/13 Lettuce07/31/13.

Swiss Chard08/28/13 Cabbage08/28/13 Kale08/28/13 Swiss Chard09/25/13 Cabbage09/25113 Kale09/25/13*

Swiss ChardMEAN314 370 5583 +/- 3904< 14< 10< 15<11< 20< 13<4<5<5<8< 10<.9<"20< 12<.13<9< 15<-13< 5<.5<4<6<5<15< 10< 17< 10< 17< 13<4<6<6< 10< 11< 10< 20< 14< 13<8< i5< 14<5<5<5<6< 11<6* 31< 28< 40< 26< 40< 30< 11< 14< 17< 23< 28< 24<16< 12< 19< 14< 22< 19<5<7<8< 10< 13< 10< 21< 17< 20< 13< 19*18<6<6<5<7< 11<7< 32< 26< 35< 23< 39< 33<10< 12< 15< 19< 25< 20< 39< 31< 35< 19< 33< 34< 11< 11< 10< 13< 21<13< 15< 12< 18< 11< 18< 13<5<6<6< 10< 11< 11< 23< 19< 30< 19< 30* 22<8< 11< 11* 16< 20< 19< 45< 34< 50< 19< 35< 19< 19* 23< 23* 52< 58< 55< 59* 42< 48< 15< 26< 22< 21< 22< 20< 35< 52< 32< 13<8< 13< 10< 15< 11<4<5<4<8<9<9< 17< 10.< 12<8< 13< 11<4<4<4<5< 8<4< 14<9< 15< 12< 22< 11<4<5<5<8< 10< 10< 17< 13< 13<8< 13< 13<5<5<4<6<9<5< 104< 77< 109< 60< 91< 56< 35< 46< 44< 92< 103* 96< 144< 92< 95< 43< 80< 74< 44< 43< 36< 58< 94< 54< 28< 25< 23< 15< 24< 15< 10< 13< 12< 20.< 31< 30< 92< 54< 111< 69< 112< 77< 28< 34< 31< 55< 55< 54< 87<.71< 93< 59<81< 88< 24< 32< 26< 41< 43< 37357 +/- 200528.+/- 135405. +/- 128118 +/- 74305 +/- 126334,+/- 121< 46< 45114 +/-43< 55202 +/- 102241. +/-52f4931 +/- 413, 4372. +/- 3147159 +/- 4022177 +/- 2072840 +/- 3334495 +/- 3572680.+/- 1483993 +/- 1194958 +/- 1393714 +/- 1356148 +/- 2695279 +/- 159< 49< 29< 37< 22< 33< 34< 14< 12< 11< 15< 26< 16< 19< 14< 14<8< 15< 13*< 5<6<4<7"< 11< 6< 36< 23< 25< 16<* 30< 26< 10<9<8< 12< 19< 10< 38< 25< 28< 14< 18< 20< 12< 11<9< 17< 28< 16289 +/-271 4396 +/- 2893(1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES Table C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMASITE COLLECTION PERIODCL-1 17 06/26/13 Cabbage06/26/13 Lettuce06/26/13 Swiss Chard07/31/13 Cabbage07/31/13 Lettuce07/31/13 Swiss Chard08/28/13.

Cabbage08/28/13 Kale08/28/13 Swiss Chard09/25/13 Cabbage09/25/13 Kale09/25113 Swish ChardBe-7194 +/- 137 326731 +/- 136 48285 +/- 116 43O276 +/- 77 285456 +/- 181 563195 +/- 86:; 452142 +/- 65 406101 +/- 69 48279 +/- 36 571206 +/- 68 53673 +/- 38 445190 +/- 60 532K-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-14465 +/- 316 < 15 < 14 < 34 < 17 < 33 < 15 < 25 < 42 < 14 < 14 < 91 < 29 < 6773 +/- 301 < 13 < 13 < 32 < 16 < 28 < 15 < 22 < 50 < 13 < 14 < 98 < 22 < 8604 +/- 289 < 12 < 12 < 30 < 14 < 28 < 13 <.22 < 44 < 11 < 12 < 89 < 28 < 7752 +/- 244 < 10 < 10 < 26 < 11 < 21 < 11 < 20 < 18 < 9 < 11 < 48 < 16 < 5934 +/- 504 < 19 < 22 :<49 < 30 < 51 < 24 <40 <47 < 23 < 25 < 120 <"22 < 19220 +/-275 ;<9 <9 <22 -<13 <25 <9 <.17 <17 <-.8 <10 <48 <14 <6860 +/- 151 < 5 < 5 < 14 < 6 < 11 < 6 < 10 < 23 < 5 < 5 < 43 < 11 < 3125 +/- 194 < 6 < 7 < 17 < 8 < 15 <.7 < 12 < 30 < 5 < 6 < 56 < 16 < 3004 +/- 146 < 5 < 5 < 14 < 7 < 13 < 5 < 9 <20 < 4 < 4 < 37 < 11 < 2660 +/- 167 < 6 < 7 < 18 <7 < 15 <7 < 12 < 51 < 5 < 6 <*77 < 20 < 4150 +/- 127 < 5 <6 < 15 < 7 -c 12 <6 <-e10 < 39 < 4 < 5 < 60 <'16 < 2826' +/-156 .<5 :<6 <18 <7 <13 <7 <11 .<45 <5 <.5 <.70 <.17 <37MEAN244 +/- 373 4598 +/- 1785nCL-118 06/26/13 Cabbage06/26/13 Lettuce06/26/13 Swiss Chard07/31/13 Cabbage07/31/13 Lettuce07/31/13 Swiss Chard.08/28/13

'Cabbage08/28/13.

Lettuce08/28/13 Swiss Chard09 /?5/13 Cabbage09/25/.13 Kale09/25/13 Swiss ChardMEAN< 102 2289 +/- 199 < 9 < 11 < 22365*+/- 118 3876 +/- 316 < 15 < 14 < 31582 +/- 154 10390 +/- 416 < 14 < 14 < 41167 +/- 83 2376 +/- 225 < 7 .<8 < 12406 +/- 114. 4183 +/- 342 < 14 < 13 < 31440 +/- 129 6830 +/- 398 < 12 < 14 < 34143 +/- 57 4141 i 154 < 6 < 6 < 15365 +/- 104 8340 +/- 287 < 11 < 11 < 29275 +/- 54 10310.+/- 233 < 6 < 7 -< 2196 +/- 46 4011-+/- 128 < 5 < 6 < 16230 +/- 44. 6309 134 < 5 < 6 < 16445 +/- 79 10940 +/-235 < 7 < 8 < 21319 +/- 300 6166 ý 6333< 10 < 22 < 10 < 20 < 34 < 10< 15 < 32 < 15 < 23 < 46 < 12< 19 < 37 < 15 < 27 < 50 < 13< 10 < 15 <8 < 11 < 12 < 7< 17 < 32 <- 14 < 21 < 24 < 11<18 < 31 <13 < 21 <24 <10< 7 < 14 < 6 < 12 <29 < 5< 14 < 27 < 12 < 20 < 37 < 9< 10 < 18 < 8 < 12 < 29 < 5<6 <12 <6 <11 <44 <5<7 <13 <6 <10 <40 <4< 10 < 19 < 8 < 14 < 41 < 6< 10 < 76 < 18 < 57< 13 < 97 < 30 < 80< 14 < 106 < 30 < 93< 8 < 39 < 13 < 47< 11 <57 < 14 < 66< 13 <63 < 14 < 75< 6 < 55 < 14 < 40< 11 <.81 < 19 < 70< 6 < 59 < .14 < 39< 5 < 67 < 17 < 34*.5 < 63 < 17 < 28< 7 < 77 < 18 < 45THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUESmi mm -m I-- -miN m nm m m =- = m- mm~ m-Table C-IX.2CONCENTRATIONS OF GAMMA EMITTERS IN GRASS SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMASITE COLLECTION Be-7K-40Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131Cs-134 Cs-137 Ba-140 La-140 Ce-144PERIODCL-01 05/08/1305/22/1306/05/1306/19/1307/03/13:97/ 17/13.07/31/13

ý. 08/14/13.08/28/13-09/11/1309/25/13o10/09/13

.10/23/13

MEANCL-02 05/08/1305/22/1306/05/1306/19/1307103/1307/17/1307/31/1308/14/1308/28/1309/11/1309/25/1310/09/1310/23/13765648156513293527.22661732221,-<.196547272712722645+/- 58+/- 207+/- 258+/- 234+ 193+ 395+ 256+ 162+/- 92+/- 131+/- 244+/- 1315810 +/- 1445569 +/- 4334999 +/- 4995654 +/- 613'7170 +/- 3105116 +/-.727.3980 +/-.4595635 +/- 474.5544 +/- 438.6774 +/-.202'5234 +/- 2203570 +/- 4913416 +/- 184516202411302118.21:610179<6< 17*17< 24<12< 34* 20<19< 21<7.*10*18*10* 14* 40< 53< 59* 29* 65< 49< 49< 47*19< 24<44* 22<6* 21* 25< 33* 15< 42* 23< 26* 28<9<11< 21< 10* 12< 44< 44< 55< 27* 71< 46< 42< 49* 16< 21< 39< 19<6* 17< 22< 25* 13< 34* 25*16.< 20<8<11< 20<10*10< 30< 39< 55< 23< 57< 39< 28< 41* 14< 18< 28<17< 34* 52< 44< 46< 41* 58< 46< 26* 50< 48< 39* 56< 56<4<15< 18* 25<11* 30< 22* 15* 18<6.*10* 16<8<5<15< 22< 25< 12< 34< 24* 18<18<7*10<17<8<54< 123< 121* 131* 86* 167* 103* 87< 131* 78..< 77* 117* 88132627352553282839-19201527< 35* 101* 137< 145< 75* 155* 144< 76* 78< 43* 70< 74< 521604 +/- 2030 --5267 +/--2213,5271049129214902933186823361233260.429246627482353+/- 60+/- 152+/- 234+/- 293+/- 164+/- 246+/- 290+/- 248+/- 97+/- 137+/- 263+/- 1525493 +/- 1415353 +/- 314,4353 +/- 495&6149 +/-6105110 +/- 2666398 +/- 5713687 +/- 503.5391 +/- 5886745 +/- 621:.7403 +/- 2217449 +/- 258-5636 +/- 4034792 +/- 223<5< 14< 20< 21< 12" 23< 26< 24< 25< 8< 10< 108<6< 14< 20< 25< 12< 22< 28< 22< 23< 8< 10< 12<9 "< 16< 31< 52< 57< 30< 48< 59< 56< 69< 21< 26< 31< 23<7< 17< 31< 30< 14< 30< 28<34< 26< 10< 13< 15<9<12 <6< 33 < 15<5 4 <26< 52 < 24< 25 < 14< 46 < 23< 56 < 27< 58. < 25< 61 < 27<18 <9< 25 < 11< 24 < 12< 19 < 10< 11< 23< 44< 44< 22< 41< 33< 37:< 49< 15<19< 23.< 16<37 <5<44 < 13< 48 < 23< 47 < 25<43' < 11< 49 < 23< 44 < 22< 45 < 22< 60 < 22<52 <7<37 < 9< 53- < 11Z< 52 <8<5< 13< 24< 27< 12< 24< 25< 23< 26<8< 10< 12<8< 60< 97< 124< 130< 86< 125< 135< 110.< 163< 88< 74< 103< 15< 28< 30< 27< 25< 24< 39< 41< 43< 24< 20< 20< 21< 38< 86< 144< 172< 82< 200< 130< 142< 129< 41< 59< 67< 55MEAN1727 +/- 1695 5689 +/- 2239 -THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES Table C-IX.2CONCENTRATIONS OF GAMMA EMITTERS IN GRASS SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMASITE COLLECTION Be-7K-40Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144PERIODCL-08 05/08/1305/22/1306/05/1306/1911307/03/1307/17/1307/31/1308/14/1308/28/1309/11/1309/25/1310/09/1310/23/13MEAN838 +/- 50 5255 +/- 118 < 4 < 4337 +/- 179 4895 +/- 403 < 19 < 19856 +/- 198 5836 +/- 489 < 20 < 17808 +/- 294 .- 5437 +/- 619 < 31 <.313930 +/- 2022459 +/- 274694 +/- 1932126 +/-.207578 +/- 186583 +/- 1032622 +/- 1672020 +/- 2062688 +/- 1476851 +/- 339 < 148317 +/- 609 < 235651 +/- 499 < 216383 +/- 413 < 1710380 +/- 674 < 219937 +/- 269 < 88402 +/- 313 < 136664 +/- 373 < 126874 +/- 258 <9..< 15* 24< 21< 16< 24< 10< 14< 15< 10< 13 < 6< 44 < 20< 40 < 26< 80 .<34< 34 < 17< 57 < 29< 44 < 28< 38 < 20< 54 <:28<25 < 11<29 < 15<33 < 16< 25 < 111580 +/- 2243 6991 +/- 3530<11 <5 <8 <26< 40 < 19 < 32 < 52< 46 < 22 < 30 < 37< 66 < 32 -<. 55 < 54< 32 < 16 < 27 < 52< 63 < 27 < 41 < 49< 43 < 19 < 32 < 3543 < 18. < 30 < 3255 *<20 <;45 < 59< 21 < 10 < 17 < 56< 29 < 15 < 25 < 53< 32 < 16 < 25 < 55< 21 ',<.11. .<. 19 .-<.59< 14 <6 < 11 <34<.33 < 16 <.28 < 48< 38 < 19 < 30 < 36< 74 < 25 < 47 < 44< 26 < 12 < 20 < 41< 65 < 28 < 47 < 51<.44 < 21 < 32 < 38< 41 < 21 < 38 <41< 38 < 22 < 27 < 46< 16 < 8 < 14 < 55< 24 < 13 < 22 < 39< 25 < 11 < 19 < 48< 19 < 10 < 18 < 59<4* 16< 19< 27< 13< 22< 18,<17< 19<7< 13< 12< 9.< 4 <44< 18 < 138< 17 < 97< 28 <148< 15 < 105< 24 < 121< 19 < 96< 15 < 84< 21. < 131< 8 < 94< 14 < 109< 15 < 109.<10 < 100< 11< 31< 26< 55* 28< 31< 30< 23< 29< 25< 24< 27< 24< 23< 78< 116< 130< 92< 166< 126< 114< 143< 39< 96<.77<.64CL-116 05/08/13.

05/22/1306/05/1306/19/1307/03/1307/17/1307/31/1308/14/1308/28/1309/11/1309/25/1310/09/13.

10/23/13819 +/- 55638 +/- 1701340 +/- 2191827 +/- 3203144 +/- 1583244 +/- 3492200 +/- 2762896 +/- 273*628 +/- 166707 +/- 931504 +/- 1182492 +/- 1972433+/-1325488 +/- 141 < 64485 +/- 321 <145232 +/- 500 < 166343 +/- 617 < 235229-+/- 287 < 116118 +/- 568 < 233849 +/-425 <.204723'+/- 428 < 206124 +/- 476 < 185447 +/- 210 < 76460 +/- 245 < 114886 +/- 335 < 113568 +/- 181 < 9< 6< 1 .6< 17< 26< 12< 27< 17 < 7< 35 <<19< 37 < 24< 56 < 36< 28 < 13< 66 < 32<5.< 15< 17< 25.< 11< 25< 21< 18< 15<7< 10< 10< 5 .< 59,< 14 < 108< 19 < 94<24 < 129< 11- < 87< 26 < 130< 20 < 97< 19 < 108< 17 < 108< 7 < 85.< 11 < 86< 10 < 92< 16< 27< 21< 33< 22< 36< 32< 21< 27< 20< 25< 29< 27< 94< 120< 178<76< 126< 1365 141< 103< 45< 52< 63< 19 <41 < 17< 20 < 45 < 22< 20 < 50 < 25<8 <19 <8< 12 < 28 < 14< 11 <27 < 12< 10 <'23 < 9<8 <9 <96.< 24 <.69MEAN1836 +/- 1941 5227 +/- 1831m mmm- m m m m m m =-

Table C-X.I QUARTERLY OSLD RESULTS FOR CLINTON POWER STATION, 2013RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER

+/- 2 STANDARD DEVIATIONS STATION MEAN JAN -MAR APR -JUN JUL -SEP OCT -DECCODE + 2 S.D.CL-01 22.5 +/- 2.7 20.5 23.5 22.6 23.3CL-02 22.9 +/- 2.8 21.4 24.5 22.1 23.4CL-03 22.7 +/- 2.2 21.3 23.6 22.4 23.6CL-04 .22.3 +/- 2.1 20.9 22.5 22.4 23.4CL-05 22.1 +/- 5.3 22.0 18.4 23.5 24.4CL-06 20.7 +/- 3.0 18.6 21.3 20.8 22.1CL-07 21.1 +/- 2.4 20.2 22.1 19.9 22.1CL-08. 22.7 +/- 2.8 20.6 23;2 .23.6 .23.4CL-11 .21.5 +/- 2.5 20.5 23.3 21.3 20.8CL-15 21.0 +/- 3.3 19.4 23.1 20.1 21.4CL-22 23.8 +/- 2.9 21.7 24.9 24.7 23.7CL-23 24.5 +/- 4.1 22.0 24.1 24.7 27.0CL-24 24.1 +/- 3.7 21.8 25.4 23.4 25..8CL-33 23.9 +/- 2.7 21.9 24.6 24.1 24.9CL-34. .24.3 +/- 2.5 22.7 24.3 24.4 25.:7CL-35, 21.9.+/- 2.4 20.1 22.6 22.2 22.6CL-36 22.1 +/- 1.9 21.1 22.0 21.8 23.4CL-37 21.6 +/- 3.2 19.9 22.9 20.5 23.0CL-41 23.4 +/- 1.6 22.2 23.5 23.8 24.0CL-42 22.3 +/- 3.5 20.5' 23.8 21.2 23.8CL-43 23.6 +/- 2.1 22.2 24.2 23.5 24.6CL-44 23.0 +/- 2.6 21.3 24.5 23.2 22.9CL-45 24.7 +/- 2.8 22.9 25.1 24.4 26.3CL-46 24.6 +/- 3.6 22.1 26.5 24.9 24.8CL-47 .23.6 +/- 3.8 21.1 25.7 23.3 24.2CL-48 22.8 +/- 3.5 20.3 24.4 23.1 23.3CL-49 24.7 +/- 3.2 22.7 26.6 24.6 25.0CL-51 23.7 +/- 2.6 22.0 25.1 23.6 24.1CL-52 23.3 +/- 2.4 21.8 23.8 22.9 24.6CL-53 21.9 +/- 2.8 20.0 22.3 22.0 .23.4CL-54 23.4 +/- 2.9 21.6 25.1 23.7 23.3CL-55 23.7 +/- 3.4 21.5 24.2 23.4 25.6CL-56 24.9 +/- 4.0 22.2 26-.9 24.5 25:8CL-57 '24.4 +/- 3.4 22.0 25.6 24.6 25.5CL-58 23.9 +/- 3.3 22.0 25.6 23.0 24.8CL-60 23.6 +/- 2.5 21.8 24.5 24.0 24.2CL-61 22.9 +/- 3.1 21.0 24.0 22.4 24.3CL-63 20.6 +/- 1.9 19.5 21.4 20.0 21.4CL-64 23.3 +/-. 4.2 20.7 25.6 22.6 24.3CL-65 23:9 +/- 2.7 22.3 25.3 23.3 *24.7CL-74 20.9 +/- 2.0 19.6 22.0 20.6 21.3CL-75 .22.7 +/- 2.7 -20.7 23.8 23.0 23.3CL-76 23.2 +/- 3.2 21.1. 24.9 22.9 23.9CL-77 22.3 +/- 3.5 20.4 24.2 21.4 23.3CL-78 22.2 +/- 3.2 20.8 24.0 20.8 23.0CL-79 23.0 +/- 2.0 22.0 23.1 22.6 24.4CL-80 22.7 +/- 3.3 20.4. 24.2 22.8 23.4CL-81 ._ 22.7 +/- 2.9 20.9 23.7 22.2 24.0CL-84 23.2 +/- 2.9 21.2 23.9 t 23.2, 24.5CL-90 19.6 +/- 2.3 18.3 20.4 18.9 20.7CL-91 21.4 +/- 1.7 20.3 22.0 21.0 22.1CL-97 23.6 +/- 3.3 22.2 25.5 22.2 24.3CL-99 19.2 +/- 1.8 18.2 20.2 18.6 19.6CL-114 21.7 +/- 211 20.5 21.1 22.7 .22.5.C-23 TABLE C-X.2MEAN QUARTLY OSLD RESULTS FOR THE INNER RING, OUTER RING,SPECIAL INTEREST, SUPPLEMENTAL AND CONTROL LOCATIONS FOR CLINTONPOWER STATION, 2013RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER

+/-2 STANDARD DEVIATIONS UIIIICOLLECTION PERIODINNER RING+ 2 S.D.OUTER RINGSPECIAL INTEREST SUPPLEMENTAL CONTRQLJAN-MARAPR-JUNJUL-SEPOCT-DEC21.4 +/- 2.023.8 +/- 3.923.2 +/- 2.724.2 +/- 2.921.3 +/- 1.424.5 +/- 2.222.9 +/- 2.124.2 +/- 1.721.2 +/- 2.524.2 +/- 3.322.6 +/- 3.123.7 +/- 2.520.4 +/- 2.622.7 +/- 3.221.6 +/- 3.422.7 +/- 3.020.5 +/- 0.023.3 +/- 0.021.3 +/- 0.020.8 +/- 0.0TABLE C-X.3SUMMARY OF THE AMBIENT DOSIMETRY PROGRAM FOR CLINTON UPOWER STATION, 2013RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER

+/- 2 STANDARD DEVIATIONS LOCATIONINNER RINGOUTER RINGSPECIAL INTERESt.,

SUPPLEMENTAL CONTROLSAMPLESANALYZED64642856PERIODMINIMUM18.420.019.618.2.'20.5PERIODMAXIMUM27.026.926.625.523.3PERIOD MEAN+/- 2 S.D.23.1 +/- 3.623.2 +/- 3.122.9 +/- 3.621.8 +/- 3.621.5 +/- 2.5UPRE-OP MEAN,+/- 2 S.D., ALL LOCATIONS 18.0 .+/- 2.4INNER RING STATIONS

-CL-01, CL-05, CL-22, CL-23, CL-24'0CL-34, CL-35, CL-36,CL-42, CL-43, CL-44, CL-45, CL-46, CL-47, CL-48, CL-63OUTER 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-81SPECIAL INTEREST STATIONS

-CL-37, CL-41, CL-49, CL-64, CL-65, CL-74, CL-75SUPPLEMENTAL STATIONS-CLm-02, CL-03, CL-04, CL-06, CL-07, CL-08, CL-114, CL-15,CL-33, CL-84, CL-90, CL-91, CL-97, CL-99CONTROL STATIONS

-CL-i 1IIIIIIIIIIIC-24 FIGURE C-1MEAN MONTHLY GROSS BETA CONCENTRATION IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CPS, 20130.0520.0470.0420.037m0.027> 0.027< 0.0170.0120.0070.002MONTHPRE-OP (ALL SITES)-*-2013 INDICATOR

--2013 CONTROLC-25 FIGURE C-2MEAN QUARTERLY AMBIENT GAMMA RADIATION LEVELS (TLD) IN THEVICINITY OF CPS, 201350454035E& 30E25201510QUARTEREPRE-OP02013 Indicator 0 2013 controlC-26 APPENDIX DINTER-LABORATORY COMPARISON0

-'PROGrAMIV,

-- " ........

I" II~IIIntentionally left blankIII" '" II TABLE D-1ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAMTELEDYNE BROWN ENGINEERING, 2013(PAGE 1 OF 3)Identification Reported Known Ratio (c)Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)March 2013 E10477E10478E10480E10479MilkMilkSr-89Sr-901-131Ce-141Cr-51Cs-1 34Cs-1 37Co-58Mn-54Fe-59Zn-65Co-60pCi/L 120 99.7pCi/L 9.21 11.0pCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCipCipCipCipCipCipCipCipCi87.118646320126220021526631138495.326412314211211513916321210018747221426620820825230140095.6241109136106106129153204AP Ce-141Cr-51Cs-134Cs-1 37Co-58Mn-54Fe-59Zn-65Co-60Charcoal 1-1 31Water Fe-55June 2013E10481El10564E10545E10547E10546pCi 90.1 92.6pCi/L 1840 1890pCi/L 110 95.0pCi/L 15.8 17.01.200.840.870.990.980.940.980.961.031.061.030.961.001.101.131.041.061.081.081.071.040.970.971.160.930.970.921.010.940.950.930.991.041.010.971.001.071.091.071.061.161.141.241.050.96AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWAAMilkMilkSr-89Sr-901-131Ce-141Cr-51Cs-1 34Cs-137Co-58Mn-54Fe-59Zn-65Co-60pCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCipCipCipCipCipCipCipCipCi92.683.125311814387.117112522016956.816885.210162.712585.716911695.590.425012515194.017212021717556.715778.494.658.910875.0136110AP Ce-141Cr-51Cs-1 34Cs-137Co-58Mn-54Fe-59Zn-65Co-60Charcoal 1-131pCi 86.5 89.7D-I TABLE D-1ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAMTELEDYNE BROWN ENGINEERING, 2013(PAGE 2 OF 3)Identification Reported Known Ratio (c)Month/Year Number Matrix Nuclide Units -. Value (a) ,Value (b) TBE/Analytics Evaluation (d)June 2013 : E10549September2013 E10646E10647E10672Water Fe-55pCi/L 16101610MilkMilkSr-89Sr-901-131Ce-141Cr-51Cs-1 34Cs-1 37Co-58Mn-54Fe-59Zn-65Co-60pCi/L 63.9 96.0pCi/L 8.88 13.2pCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCipCipCipCipCipCipCipCipCi93.9 98.327215012510513812526418720814310697.011698.621916627717213110813913026619622313910586.5112105214158AP Ce-141Cr-51Cs-1 34Cs-1 37Co-58Mn-54Fe-59Zn-65Co-60Charcoal 1-131Water Fe-551.000.670.670.960.980.870.950.970.990.960.990.950.931.031.011.121.040.941.021.051.061.061.041.030.930.911.000.911.001.040.991.061.020.96AN (1)N (1)ANA (2)AAAAAAAANA (2)AAAAAAAAUIIUIIIIIIIIIIIIIIE10648E10673pCi 76.3 71.7pCi/L 1790 1690pCi/L 97.3 93.8pCi/L 13.3 12.9December2013 E10774E10775MilkMilkSr-89Sr-901-131Ce-141Cr-51Cs-134Cs-137Co-58Mn-54Fe-59Zn-65Co-60pCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCi/LpCipCipCipCipCipCi'pCipCipCi89.799.829712912611616711775714196.1110297142126112168110741147AAAAAAAAAAAAAAE10777AP Ce-141Cr-51Cs-1 34Cs-137Co-58Mn-54Fe-59Zn-65Co-6085.1278123102"*84.4:-88.023811410189.90.971.171.081.010.940.981.140.851.00AAAAAAAAA132 .135101 88.3-506 595118 118D-2 TABLE D-1ANALYTICS ENVIRONMENTAL RADIOACTIVITY-CROSS CHECK PROGRAM, TELEDYNE BROWN ENGINEERING, 2013-(PAGE 3 OF 3)" Identification Reported Known. ..Ratio (c)Month/Year Number Matrix .Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)December 2013 E10776E10778Charcoal 1-131Water Fe-55pCi 84.7 80.5pCi/L 2010 .19101.05.1.05AA(1) .Milk, Sr-89/90

-The failure was due to analyst error.. No client samples were affected by this failure.

NCR 13-15(2) The sample was not spiked with Ce-141(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/orvolumetric 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, reportedresult falls outside the ratio limits of < 0. 70 and > 1.30.D-3 TABLE D-2ERA ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAMTELEDYNE BROWN ENGINEERING, 2013(PAGE 1 OF 1)Identification Month/Year

.Number Media NuclideReported Known Acceptance Units Value (a) Value (b) Limits Evaluation (c)IMay 2013RAD-93Water Sr-89Sr-90Ba-133Cs-134:Cs-137'Co-60Zn-65Gr-AGr-B1-131U-NatH-3Filter Gr-ApCi/L 48.3 41.3 31.6-48.4 pCi/L 19.3 23.9 17.2-28.0 pCi/L 81.9 82.1 69.0-90.3 pCi/L 40.9 42.8 34.2-47.1 pCi/L. 44.0 41.7 37.0-48.8 pCi/L 61.9 65.9 59.3-75.0 pCi/L, 202 189 170 -222pCi/L 34.2 40.8 21.1 -51.9pCi/L 18.0 21.6 13.0 -29.7pCi/L 23.8 23.8 19.7 -28.3pCi/L 60.4 61.2 49.8 -67.9pCi/L 3970 4050 3450 -4460pCi/filter Lost during processing MRAD-18AAAAAAAAAAAAAAAAAAAAAAAAANovember 2013 RAD-95 Water Sr-89.Sr-90Ba-133Cs-134Cs-137Co-60Zn-65Gr-AJ.:- Gr-B '1-131U-NatH-3MRAD-19 Filter Gr-ApCi/L 25.5pCi/L 14.3pCi/L 57.2pCi/L 83.3pCi/L 201pCi/L 104pCi/L 361pCi/L 29.5pCi/L 30.1pCi/L- 23.1pCi/L ,- 5.53pCi/L 17650pCi/filter 33.021.918.154.286.720610233342.832.223.66.241770083.014.4 -28.212.8-21.5 44.7 -59.971.1 -95.4185 -22891.8-114300 -38922.2 -54.320.8 -39.919.6 -28.047.0 -7.4415500 -1950027.8- 129IIIIIIIIIIIIIIII(a) 'Teledyne Browh Engineering reported result.(b) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/orvolumetric measurements made during standard preparation.

(c) ERA evaluation:

A=acceptable.

Reported resultfalls within the Warning Limits. NA=not acceptable:.

Reported result fallsoutside of the Control Limits. CE=check for Error. Reported result falls within the Control Limits and outside of the Warning Limit.D-'4 TABLE D-3DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)TELEDYNE BROWN ENGINEERING, 2013(PAGE 1 OF 2)-Identification

Month/Year Number .Media NuclideReported Known.. Acceptance Units Value (a) .Value (b) Ranae Evaluation (c)March 2013 13-MaW2813-GrW2813-MaS2813-RdF2813-GrF2813-RdV28Water Cs-1 34Cs-1 37-Co-57 -Co-60H-3Mn-54'-K-40Sr-90Zn-65Water Gr-AGr-BSoil Cs-134Cs-137Co-57Co-60Mn-54K-40Sr-90Zn-65.AP Cs-1 34Cs-.137Co-57Co-60..Mn-54Sr-90Zn-65AP Gr-AGr-BVegetation Cs-1 34Cs-137Co-57Co-60Mn-54Sr-90Zn-65Water Cs-1 34Cs-1 37Co-57Co-60H-3Mn-54K-40Sr-90Zn-65Bq/L 21.0 24.4 17.1-31.7 Bq/L 0.0446 (1)Bq/L 28.3 30.9 21.6-40.2 Bq/L 18.2 19.56 13.69 -25.43Bq/L 506 507 355-659Bq/L .25.7 27.4 19.2- 35.6Bq/L 2.09 (1)Bq/L .10.5 10.5 7.4- 13.7Bq/L 29.2 30.4 21.3-39.5 AAAAAAAAABq/L 2.74 2.31Bq/L 15.6 13.00.69 -3.936.5- 19.5Bq/kg 859 887 621-1153Bq/kg 633 587 411-763Bq/kg 0.256 (1)Bq/kg 738 691 484-898Bq/kg 0.671 (1)Bq/kg .714 625.3 437.7 -812.9Bq/kg .. 442 628 440-816Bq/kg, 1057 995 697- 1294Bq/sample 1.73 1.78 1.25-2.31 Bq/sample 2.73 2.60 1.82 -3.38Bq/sample 2.38 2.36 1.65-3.07 Bq/sample, 0.0302 (1)Bq/samplei 4.36 4.26 2.98 -5.54Bq/sample 1.43 1.49 1.04- 1.94Bq/sample 3.14 3.13 .: 2.19- 4.07Bq/sample 0.767 1.20Bq/sample 0.871 0.850.36-2.04 0.43 -1.28Bq/sample

-0.197 (1)Bq/sample 7.39 6.87 4.81 -8.93Bq/sample 9.87 8.68 6.08 -11.28Bq/sample 6.08 5.85 4.10 -7.61Bq/sample

-0.0104 (1)Bq/sample 1.28 1.64 1.15-2.13 Bq/sample 6.84 6.25 4.38-8.13 September 2013 13-MaW29Bq/L 29.1 30.0 21.0-39.0 ABq/L 34.5 31.6 22.1 -41.1 ABq/L 0.0358 (1) ABq/L 24.6 23.58 16.51 -30.65 ABq/L 2.45 (1) ABq/L 0.0337 (1) ABq/L 0.193 (1) ABq/L 9.12 7.22- 5.05- 9.39. ., WBqeL ..38.1.. 34.6 24.2-45.0.

.A.Bq/L J1.13 0.7.01 .0:210- 1.192 A.Bq/L .7.61 .5.94 -2.97,-.8:91

.A13-GrW29.a ." -,Water Gr-AI Gr-B TABLE D-3DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)TELEDYNE BROWN ENGINEERING, 2013(PAGE 2 OF 2)Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)September 2013 13-MaS2913-RdF29SoilCs-1 34Cs-1 37Co-57Co-60Mn-54K-40Sr-90Zn-65Bq/kgBq/kgBq/kgBq/kgBq/kgBq/kgBq/kgBq/kgBq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample 11501100670502758796664210-0.5702.853.302.413.651.402.901172 820-1524977 684-1270(1)451 316-586674 472-876633 443-823460 322-598(1)AAN (2)AAWN (2)N (2)N (2)AAAAWAAP Cs-134Cs-137Co-57Co-60Mn-54Sr-90Zn-652.73.42.33.51.812.7(1)1.9- 3.52.4 -4.41.6-3.02.5-4.61.27 -2.351.9-3.513-GrF2913-RdV29AP Gr-A Bq/sample 0.872 0.9 0.3- 1.5.Gr-B ' " Bq/sample

, 1.57 1.63 0.82 -2.45AAVegetation Cs-134Cs-1 37Co-57Co-60Mn-54Sr-90Zn-65Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/9aInple Bq/sample 5.297.480.01290.05238.781. 633.185.20 3.64 -6.766.60 4.62 -8.58(1)(1)7.88 5.52 -10.242.32 1.62 -3.022.63 1.84-3.42 AAAAAW (2)WUIIIIIUIIIIIII(1) False positive test(2) Soil, Co-57 & Zn-65 identified by gamma software as not detected, MAPEP evaluated as failing the false positive test A large concentration ofEu- 152 was spiked into the sample, causing interference in the analysis.

Gamma software recognized the interference and identified them asnot detected.

MAPEP does not allow clients to enter non-detect designation.

NCR 13-04Soil, Sr-90 -incorrect results were submitted to MAPEP. Actual result was 332 bq/kg, which is with the acceptance range. NCR 13-04AP, Cs- 134 -MAPEP evaluated the -0.570 as a failed false positive test No client samples were affected by these failures.

NCR 13-04Vegetation, Sr-90 -it appears that the carrier was double spiked into the sample, resulting in the low activity for this sample. NCR 13-04(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/orvolumetric measurements made during standard preparation.

(c) DOEIMAPEP evaluation:

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

D-6 APPENDIX EERRATA DATA I,.- .IIIIntentionally left blank 3 Due to an incorrect setting on gamma detector 08, 3.29 rather than 4.66was used in the MDC calculation.

Nonconformance 13-07 was initiated and corrective actions have been implemented to address this issue. Allsamples counted on detector 08 were reprocessed using the correctcalculation.

As a result, all MDCs for these samples have increased by41.6%. The previously reported activities and uncertainties were notaffected.

In some cases, the increased MDC resulted in missed LLDs. Allsamples with MDCs affected by this issue are listed below. The sampleswith missed LLDs are shown in the table for 2011, 2012, and 2013. Allother required LLDs were met.E-1 2011START END REQUIRED REVISEDCLIENT ID DATE DATE MATRIX NUCLIDE MDC MDC UNITS4Q11 CL-1 1 9/28/2011 12/28/11 Air Particulate 4Q11 CL-6 9/28/2011 12/28/11 Air Particulate IIIIIIIIIUIIIIIIIIIE-2 20-1.2*START END REQUIRED REVISEDCLIENT ID DATE DATE MATRIX NUCLIDE MDC MDC UNITSCL-99 02/29/12 03/28/12 Surface Water2Q12 CL-3 03/28/12 06/27/12 Air Particulate 2Q12 CL-4 03/28/12 06/27/12 Air Particulate CL-13 04/25/12 04/25/12 Surface WaterCL-99 04/25/12 05/30/12 Surface Water 1-131 <15 <18.6 pCi/ICL-01 05/09/12 05/09/12 GrassCL-02 05/09/12 05/09/12 Grass 1-131 <60 <78.03 pCi/Kg WetCL-08 05/09/12 05/09/12 Grass 1-131 <60 <77.13 pCi/Kg WetCL-116 05/09/12 05/09/12 Grass 1-131 <60 <82.32 pCi/Kg WetCL-08 05/23/12 05/23/12 GrassCL-MW-CL-21S 06/11/12 06/11/12 RGPP 1-131 <15 <18.73 pCi/ICL-116 06/20/12 06/20/12 Grass 1-131 <60 <71.34 pCi/Kg Wet3Q12 CL-6 06/27/12 09/26/12 Air Particulate CL- 15 (Lettuce) 06/27/12 Vegetation CL- 118 (Lettuce) 06/27/12 Vegetation CL-91 06/27/12 07/25/12 Surface WaterCL-08 07/18/12 07/18/12 GrassC L-115 (Sviss Chard) 07/25/12 07/25/12 Vegetation CL-118 (Lettuce) 07/25/12 07/25/12 Vegetation 1-131 <60 <72.15 pCi/Kg WetCL-91 07/25/12 08/29/12 Surface WaterCL-116 08/01/12 08/01/12 GrassCL-116 08/15/12 08/15/12 Grass 1-131 <60 <82.5 pCi/Kg WetCL- 15 (Cabbage) 08/29/12 Vegetation CL-115 (Lettuce) 08/29/12 Vegetation 1-131 <60 <69.94 pCi/Kg WetCL-90 08/29/12 09/26/12 Surface Water 1-131 <15 <15.79 pCi/ICL-MW-CL-14S 09/04/12 09/04/12 RGPP 1-131 <15 <16.02 pCi/ICL-MW-CL-22S 09/04/12 09/04/12 RGPPSWTP 09/05/12 09/05/12 RGPPCL-08 09/12/12 09/12/12 GrassCL-116 09/12/12 09/12/12 GrassCL- 16 09/12/12 09/12/12 Milk BA-140 <60 <65.48 pCi/ICL-116 09/12/12 09/12/12 Milk LA-140 <15 <18.91 pCi/ICL-08 09/26/12 09/26/12 Grass 1-131 <60 <66.77 pCi/Kg WetCL-12T 09/26/12 09/26/12 Ground Water 1-131 <15 <19.39 pCi/ICL-12T 09/26/12 09/26/12 Ground Water LA-140 <15 <15.02 pCi/ICL-01 10/10/12 10/10/12 GrassCL-08 10/10/12 10/10/12 GrassCL-08 10/24/12 10/24/12 Grass.E-3 2012START END REQUIRED REVISED'CLIENT ID' DATE DATE MATRIX NUCLIDE MDC MDC UNITSCL-14 10/31/12 11/28/12 Drinking WaterCL-14 11/28/12 12/26/12 Drinking WaterE-4II 2013CLIENT IDSTARTDATEENDDATE MATRIXREQUIRED REVISED-NUCLIDE I MDC MDC UNITSCL-91 12/26/12 01/30/13 Surface!Water E-5 Intentionally left blank* , -... ;.:. .,I APPENDIX FANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

Intentionally left blankII Docket No: 50-461CLINTON POWER STATIONAnnual Radiological Groundwater Protection Program Report1 January through 31 December 2013Prepared ByTeledyne Brown Engineering Environmental Serviceso Exelon Generation.

Clinton Power StationClinton, IL 61727April 2014 IIntentionally, left blank .I .,i',

Table Of ContentsI. Sum m ary and Conclusions

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

1I1. Introduction

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

3A .O bjectives of the RG PP ..................................................................................

3B. Im plem entation of the O bjectives

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

3C .Program Description

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

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

5II1. Program Description

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

5A. Sam ple Analysis

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

5B. Data Interpretation

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

6C .Background Analysis

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

71. Background Concentrations of Tritium .................................................

7IV. Results and Discussion

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

9A .Program Exceptions

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

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

9C .G roundwater Results ....................................................................................

9D. Surface Water Results .................................

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

11F. Recapture

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

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

11H. Leaks, Spills, and Releases

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

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

12J. Investigations

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

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

12 Appendices Appendix ATablesTable A-1Fi-guresLocation Designation of the Annual Radiological Groundwater Protection.

Program Report (ARGPPR)Radiological GroundwaterProtection Program -Sampling, Locations, Clinton Power Station, 2013Routine Well Water and Surface Water Sample Locations for theRadiologicaliGroundwater Protection

Program, Clinton Power Station,2013.Data Tables of the Annual Radiological Groundwater Protection.

.Program.

Report (ARGPPR)Concentrations of Tritium, Strontium, Gross Alpha, and Gross Beta inGroundwater Samples Collected in the Vicinity of Clinton PowerýStation, 2013.Appendix BTablesTable B-1.1!IiII,IIIiIIIUIIiITable B-1.2 Concentrationsof Gamma Emitters in Groundwater Samples Collected

-in the Vicinity of Clinton Power Station, 2013.Table B-1.3 Concentrations of Hard-To-Detects in Groundwater Samples Collected inithe Vicinity of Clinton Power Station, 2013."'Table B-11.1 Concenrtrations of Tritium in Surface.Water Samples Collected in theVicinity of Clinton Power .Station, 2,0'13.Table B-11.2 Concentrations of Gamma Emitters in Surface Water SamplesCollected in the Vicinity of Clinton Power Station, 2013.TableB-1l1.1 Concentrations of Tritium in Precipitation.Water Samples Collected inthe Vicinity of Clinton Power Station, 2013.ii

1. Summary and Conclusions In 2006, Exelon instituted a comprehensive program to evaluate the impact ofstation operations on groundwater and surface water in the vicinity of ClintonPower Station (CPS). This evaluation involved numerous station personnel andcontractor support personnel.

This report covers groundwater and surface watersamples, collected outside of the Licensee required Off-Site Dose Calculation Manual (ODCM) requirements, both on and off station property in 2013. Duringthat time period, 240 analyses were performed on 108 samples from 32locations.

The monitoring was conducted in four phases.In assessing all the data gathered for this report, it was concluded that theoperation of CPS had no adverse radiological impact on the environment, andthere are no known active releases into the groundwater or surface water atCPS. No program changes occurred during the sampling year of 2013.Gamma-emitting radionuclides associated with -licensed plant operations werenot detected at concentrations greater than their, respective Lower Limits ofDetection (LLDs) as specified in NUREG-1 302 in any of the groundwater orsurface water samples.

In the case of tritium, Exelon specified that theindependent laboratory.

achieve a lower limit of detection

10. times lower than thatrequired by the United States Environmental Protection Agency (USEPA)regulation.

Strontium-89 was not detected many '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 .ofthe groundwater, surface water, or* precipitation water samples at concentrations greater than the United States'Environmental Protection Agency (USEPA) drinking water standard (and theNuclear Regulatory Commission Reporting Limit) of 20,000 pCi/L. Background levels ,of tritium were detected

-at iconcentrations greater than-the self-imposed LLD of 200 pCi/L in 3 of.17 groundwater monitoring locations.

The tritiumconcentrations ranged from 198 +/- 122 pCi/L to 348 + 141 pCi/L. Tritium was notdetected 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 in2013. Gross Alpha (dissolved) was detected in two of the 17 groundwater locations.

The concentrations ranged from 2.2 to 2.5 pCi/L. 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 2.2 to 10.9 pCi/L. Gross Beta (suspended) was not detected in anyof the groundwater locations.

Hard-To-Detect analyses were performed on two groundwater locations toestablish 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. Allhard-to-detect nuclides were not detected at concentrations greater than theirrespective MDCs.I!IiIIIIIIIIIII I1. Introduction The Clinton Power Station (CPS),.consisting of one approximately 1,140 MWgross electrical power output boiling water reactor is located in Harp Township, DeWitt County, Illinois.

CPS is owned and operated by Exelon and becameoperational 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-madecooling lake and about 452 acres of property not owned by Exelon. The plant issituated on approximately 150 acres. The cooling water discharge flume -whichdischarges 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 theaforementioned 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 2013.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 impactsfrom station operations before significant radiological impact to theenvironment and potential drinking water sources.2. Understand the local hydrogeologic regime in the vicinity of the stationand maintain up-to-date knowledge of flow patterns on the surface andshallow subsurface.

3. Perform routine water sampling and radiological analysis of water fromselected 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 Stationas discussed below:

IIExelon and its consultantidentified locations as described in thePhase 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 thepublic-in station -specific reports.2. The Clinton Power Station reports describe the local hydrogeologic regime. Periodically, the flow patterns on the surface and shallowsubsurface are updated based on ongoing measurements.

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

4. ' Clinton Power Station has implemented new'procedures to identifyand report new leaks, spiils,-or other:detections with potential radiological'significance in a timely manner.5. Clinton Power Station staff and consulting hydrogeologist assessanalytical 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-1 and;A-2, Appendix A. IGroundwater, Surface Water and Precipitation Water 3Samples of water are collected,

rmahaged, transported andanalyzed in accordance with approved procedures following

regulatory methods.

'Groundwater, surfakcewater,

-and precipitation water are collected.

-Sample locations; sample 'collection frequenhies and analytical frequencies are contr6lled-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 samplingevents. Analytical laboratories are subject to internal qualityassurance programs and inter-laboratory cross-check

programs, aswell as nuclear industry audits. Station personnel review-and evaluate all analytical data deliverables after initial review by thecontractor.

Analytical data results are.'reviewed by both station personnel and Ian independent hydrogeologistfor adverse trefids or. changes to II hydrogeologic conditions.

D. Characteristics of Tritium'(H-3)

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

Themost common form of tritium is tritium oxide, which is also called "tritiated water." The chemical properties of tritium are essentially those of ordinaryhydrogen.

Tritiated water behaves the same as ordinary water in both thee.nvironment and-:the body.. Tritiumcan be taken into the body by drinkingwater, breathing air, eating food, or absorption,through skin. Once tritiumenters 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 14days. Within one month or so after ingestion, essentially all tritium iscleared.

Organically bound tritium (tritium that is incorporated in organiccompounds) can remain in the. body for a longer period.Tritium is produced naturally in the upper atmosphere when cosmic raysstrike air molecules.

Tritium is also produced, during nuclear weaponsexplosions, as a by-product in reactors producing electricity, and in specialproduction

reactors, where the isotopes lithium-7 and/or boron-10 areactivated 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 atthe same velocity as the average groundwater velocity.

Tritium has a half-life of approximately 12.3 years. It decaysspontaneously to helium-3 (3he).-This, radioactive decay releases a beta..particle (Iow-energy electron).

The radioactive decay of tritium is the;source of the health risk from exposure to tritium,.

Tritium is one of theleast dangerous radionuclides:

because it emitsvery weak beta radiation

, ,and leaves the body relatively quickly..

Since-tritiumis 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-contentz of the specific tissue.Ill. Program Description A. Sample AnalysisThis section describes the general analytical methodologies used by TBEand EIML to analyze the environmental

samples, for radioactivity for the-Clinton Power Station RGPP in 2013.In order to achieve the stated objectives, the current program includes thefollowing analyses:

1. Concentrations of gamma emitters in groundwater and surfacewater.2. Concentrations of strontium in groundwater.

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

5. Concentrations of Am-241 in groundwater..

!6. Con.entrations of Cm?42 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. Concenrtrations of Fe-55 in groundwater.

10. Concentrations of Ni-63 in groundwater.

UB. Data Interpetation The radiological data collected prior to .Clinton Power Station becomingoperational were used as a baseline with which thesepoperational datawere compared.

For the purpose of this report,:

Clinton Power Station wasconsidered operational at initial criticality.

Several factors were important in the interpretation of the data: 31. 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 bythe analytical parameter.

2. Laboratory Measurements The estimated uncertainty in measurement of tritium inenvironmental samples is frequently on the order of 50% of the I measurement value.....

Statistically, the exact value of a measurement is expressed as arange with a stated level of confidence.

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

The uncertainty comesfrom calibration standards, sample.volume or weightmeasurements, sampling uncertainty and other factors.

Exelonreports the uncertainty of a measurement created by statistical process (counting error) aswell as all sources of error (TotalPropagated Uncertainty or TPU). Each result has two valuescalculated.

Exelon reports the TPU by following the result with plusor minus +/- the estimated sample standard deviation, as TPU, thatis obtained by propagating all sources of analytical uncertainty inmeasurements.

Analytical uncertainties are reported;atthe.95%

confidence level inthis report for reporting consistency with the AREOR.Gamma spectroscopy results for eachtype'of sample weregrouped 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-1 37, Ba-1 40 and La-14.0 were reported..

C. Background AnalysisA 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 sampledandan'alyzed during the pre-bperatidnal REMP were atmospheric

radiation',

fafll-out, domestic water,:surface water, mari:ne life, milk, andvegetation.

The results of the monitoring were detailed in the reportentitled, Eýnvirohmental Radiological Monitoring' for Clinton Power NuclearPower Station, Illinois Power Company, Annb~al Report 1987, May 1988.The pre-operational REMP contained analytical results from samplescollected from the surface water and groundwater.

1. Background-Concentrations of TritiumThe purpose of the following discussion is to summarize background measurement~s'of tritium in-various media performed by others.

ia. Tritium Production, Tritium is created in the environment from naturally occurring processes both cosmic and subterranean, as well as fromanthropogenic (i.e., man-made) sources.

In the upperatmosphere, "Cosmogenic" tritium is produced from thebombardment of stable nuclides and combines with oxygento form tritiated water, which will then enter the hydrologic cycle. Below ground, "lithogenic" tritium is produced by thebombardment of natural lithium present in crystalline rocksby neutrons produced by the radioactive decay of naturally abundant uranium and thorium-Lithogenic production oftritium is usually negligible compared to other sources due to Ithe limited abundance of lithium in rock. The lithogenic tritium is introduced directly to groundwater.

A major anthropogenic source of tritium and strontium-90 IComes from the former atmospheric testing of thermonuclear weapons.

Levels of tritium in precipitation increased significantly during the 1950s and early 1960s, and later withadditional

testing, resultingiii the release of significant amounts of tritium to the atmosphere.

The Canadian heavywater nuclear power reactors, other commercial powerreactors, nuclear research and weapons production continueto influence tritium concentrations in the environment.

b. Precipitation DataPrecipitation samples are routinely collected at stations iaround the worldfor the analysis of tritium and otherradionuclides.

Two publicly available databases that providetritium concentrations in precipitation are Global Network ofIsotopes in Precipitation (GNIP) and USEPA's RadNetdatabase.

GNIP provides tritium precipitation concentration data for samples collected world wide from 1960 to 2006.RadNet provides tritium precipitation concentration data forsamples collected at stations through out the U.S. from 1960up to and including 2006. Based on GNIP data for samplestations located in the U.S. Midwest, tritium concentrations peaked around 1963. This peak, which approached 10,000pCi/L for some stations, coincided with the atmospheric testing of thermonuclear weapons:

Tritium.

concentrations insurface water showed a sharp decline up until 1975,-followed; by a gradual decline.

since that time. Tritium Iconcentrations in Midwest precipitation have typically been i below 100 pCi/L since around 1980. Tritium concentrations in wells may still be above the 200 pCi/L detection limit fromthe external causes described above.c. Surface Water DataTritium concentrations are. routinely measured in ClintonLake.According to the USEPA, surface water data typically has anuncertainty

+/-70 to, 100 pCi/L 95% confidence bound oneach given: measurement.,

Therefore, the typicalbackground..data provided may be subject to measurement

uncertainty of approximately:

+/-70 to 100 pCi/L.The radio-analytical laboratory is counting tritium results toan 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 resultscannot-be distinguished as different from background at this.* concqntration.

-,IV. Results and Discussion A. Program Exceptions

1. Sample Anomalies Therewere no samples anomalies in 2013.2.. Missed, Samples.There were no missed samples in 2013.B~Program Changes.There were no sampling program-changes in 2013.C., Groundwater Results,,..

G3roundwater

-Baseline samples were, collected from. off-site wells during four (4)phasesat the station.

Analytical results are discussed below. No-.9-IIanomalies were noted during the year.TritiumSamples from 17 locations were analyzed for tritium activity (Table UB-4.1 Appendix B).' Tritium values ranged .from below the Exelonimposed LLD of:198 pCi/I to 348 pCi/I.Strontium Strontium-89 was not detected in any of the 17. samples analyzedand the required LLD of 10 pCi/L was met. Strontium-90 was alsonot detected, in any of the 17 samplesanalyzed and the requiredLLD 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 andsuspended fractions were performed.

on groundwater samplesduring the third quarter of sampling in 2013. Gross Alpha(dissolved):was detected in twoWof the: 17 groundwater locations.

The concentrations ranged from 2.2 to.2.5 pCi/L. 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 2.2 to 10.9 pCi/L.Gross Beta (suspended) was not detected in any of thegroundwater locations (Table B-1.1 Appendix B).Gamma Emitters,

-.Naturally occurring K-40 was detect in two samples.

Theconcentrations ranged from 32 to 62 pCi/L. No other gamma Iemitting nuclides were detected (Table B-1.2, Appendix B).Hard-To-Detect IHard-To-Detect analyses were performed on two groundwater locations to establish background levels. The analyses includedFe-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 notdetected at concentrations greater than their.respective MDCs. UOccasionally, the isotopes of U-234 and U-238 are detected at low'levels and indistinguishable from background (Table B-1.3Appendix B). II D. Surface Water Results:;

Surface WaterBaseline samples were collected from on-site surface waters duringfour-(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-II.1 Appendix B). Tritium was not detected atconcentrations greater than the LLD.Strontium Strontium was not analyzed in 2013 (Table B-11.1 Appendix B).Gamma Emitters' No garmma emitting nuclideswere detected (Table B-11.2,Appendix.B).

Precipitation Water ResultsPrecipitation WaterE.Precipitation water samples were collected during the first quarterof 2013. Analytical results are discussed below. No anomalies were noted during the year.TritiumTritium was not detected at concentrations greater than the LLD(Table B-ll1.1 Appendix B).FS:" Recapture Clinton Power Station conducted recapture precipitation sampling and-analysis per.the-Radiological, Groundwater Protection Program.

No.consistent indication of recapture was identified.

G. Summary of Results -Inter-Laboratory Comparison ProgramInter-Laboratory Comparison Program results for TBE are presented in the Annual Radiological Environmental Operating Report.H. Leaks, Spills, and ReleasesNo leaks, spills or releases were identified during the year.1. TrendsThe historic low level tritium activity detected at MW- CL-14S and MW-CL-21S has continued to decrease over the course of 2013. All sampling welllocations are currently indicating tritium levels less than the required LLDof 200 pCi/I. All wells will continue to be sampled in accordance with theRGPP.J. Investigations Currently no investigation sarb on-going.

K. Actions Taken3. Compensatory Actions .'There have been no station events requiring cormipensatory actions atthe Clinton Power Station in 2013.4. Installation of Monitoring WellsNo new wells were installed during the 2013.5. Actions to Recover/Reverse PlumesNo actions were required to recover or reverse groundwater plumes.

APPENDIX A:'LOCATION DESIGNATION OF THE ANNUAL RADIOLOGICAL

.GROUNDWATER PROTECTION PROGRAM REPORT(ARGPPR)

Intentionally left blank TABLE A-1:Radiological Groundwater Protection Program -Sampling Locations, Clinton PowerStation, 2013SiteSite TypeB-3MW-CL-1MW-CL-2MW-CL-121 MW-CL-131 MW-CL- 13SMW-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-21 SMW-CL-22S Sewage Treatment PlantSW-CL-1SW-CL-2SW-CL-4SW-CL-5SW-CL-6SW-CL-7RG-2RG-3RG-15RG-26RG-NRG-NERG-NNEMPT-1Monitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellMonitoring WellSurface WaterSurface WaterSurface WaterSurface WaterSurface WaterSurface WaterSurface WaterPrecipitation WaterPrecipitation WaterPrecipitation WaterPrecipitation WaterPrecipitation WaterPrecipitation WaterPrecipitation WaterPrecipitation WaterA-i

---C, -.I- % I77JMMcL-17S 0 200 400 /..- .F i g u r e A -1 ........Onsite Sampling Locations at Clinton Power Stationm m m m M M M M M M M M M M M M a M M m -m m M -M M M M M M M M M M M M M0 100 200Feet..FigureA-2

.Sampling Locations South of Clinton Power Station Figure A -3Sampling Locations East of Clinton-Power Station-m m a m a a -, a a a a a a -a a Figure A -4Recapture Sampling Locations of Clinton Power StationA-5 UIIIIIIUIIUUUUIUIUIIntentionally left blank APPENDIX BDATA TABLES OF THE ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAMREPORT (ARGPPR)

Intentionally left blank TABLE B-1.1CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETAIN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWERSTATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITECOLLECTION DATEH-3 SR-89 SR-90 GR-A (DIS) GR-A (SUS)GR-B (DIS) GR-B (SUS)B-3B-3B-3B-3MW-CL-1MW-CL-1MW-CL-1MW-CL-1MW-CL-121 MW-CL-121 MW-CL-121 MW-CL-121 MW-CL-121 MW-CL-131 MW-CL-1 31MW-CL-1 31MW-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-14S MW-CL-1 51MW-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-181 MW-CL-18S MW-CL-18S MW-CL-18S 03/11/1305/28/1308/26/1311/11/1303/11/1305/28/1308/26/1311/11/1302/19/1303/11/1305/28/1308/26/1311/11/1303/11/1305/28/1308/26/1311/11/1303/11/1305/28/1308126/1311/11/1302/19/1303/12/1305/29/1308/27/1311/12/1303/11/1305/28/1308/26/1311/11/1303/11/1305/28/1308/26/1311/11/1303/12/1305/29/1308/27/1311/12/1303/12/1305/29/1308/27/1311/12/1302/19/1303/12/1305/29/1308/27/1311/1211302/19/1303/12/1305/29/13< 194< 166< 189< 182< 193< 163< 197< 182348 + 141< 175< 168< 175< 181< 176< 169< 189< 183< 181< 180< 189< 182343 +/- 141329 +/- 126198 +/- 122235 +/- 131< 181< 176< 180< 194< 183< 194< 183< 197< 183< 198< 183< 193< 182< 196< 181< 194< 181< 190< 192< 180< 192< 183< 188< 195< 179< 3.6 < 0.62.5 +/- 1.3 < 0.9< 4.5 < 0.8 < 1.7 < 0.9< 4.1 < 0.8 < 1.4 < 0.9< 4.5 < 0.7 < 1.3 < 0.8< 4.2<< 4.2< 0.7< 1.2 < 0.84 +/- 1.2 < 1.73 +/- 1.1 < 1.76 +/- 1.3 < 1.73 +/- 1.2 < 1.67 +/- 1.1 < 1.69 +/- 1.4 < 1.6< 1.6< 1.63 +/- 1.4 < 1.72 +/- 1.2 < 1.79 +/- 1.2 < 1.7< 0.6 < 2.0< 0.8< 4.3 < 0.7 < 1.3< 4.4 < 0.7 < 0.8< 4.5 < 0.7 < 2.1< 5.1 < 0.9 < 2.1< 0.8 < 1.7< 0.8 < 1.2< 0.4< 0.4< 3.8 < 0.82.2 +/- 1.2 < 0.4B-i TABLE B-I.1CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA AND GROSS BETAIN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWERSTATION, 2013RESULTS IN UNITS OF PCI/LITER

+/-2 SIGMASITECOLLECTION DATEH-3 SR-89 SR-90 GR-A (DIS) GR-A.(SUS)

GR-B (DIS) GR-B (SUS)MW-CL- 18SMW-CL- 18SMW-CL- 19SMW-CL-19S MW-CL-19S MW-CL-19S MW-CL-2MW-CL-2MW-CL-2MW-CL-2MW-CL-20S MW-CL-20S MW-CL-20S MW-CL-20S MW-C L-21SMW-C L-21SMW-C L-21SMW-CL-21 SMW-CL-22S MW-CL-22S MW-CL-22S MW-CL-22S 08/27/1311/12/1303/11/13, 05/28/1308/26/1311/11/1303/11/1305/28/1308/26/1311/11/1303/11/1305/28/1308/26/1311/11/1303/11/1305/28/1308/26/1311/11/1303/12/1305/29/1308/27/1311/12/13< 195< 184< 191< 180< 190< 181< 192< 163< 188< 181< 196< 182< 196< 182256 + 132< 179< 191< 181< 191< 182<* 194< 183< 4.1 < 0.8 < 1.9< 4.2 < 0.9 < 3.0< 4.3< 0.7 < 1.9< 0.4:< 0.4< 0.9< 0.6< 0:6< 0.63.9 +/- 1.2 < 1.75.3 .+/- 1.5 < 1.7< 4.6 < 0.8 < 1.6< 5.1 < 0.8 < 1.3< 4.4 < 0.9 < 1.83.0 1.14.5 + 1.22.9.+/- 1.110.9..- 1.4< 1.7< 1.9< 1.9UIIIIIIIIIIIIIUIIII< 1.9B-2 Table B-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITEB-3MW-CL-1MW-CL-121 MW-CL-1 31MW-CL-1 3SMW-CL-14S MW-CL-14S MW-CL-14S MW-CL-1 51MW-CL-15S MW-CL-16S MW-CL-17S MW-CL-1 81MW-CL-18S MW-CL-19S MW-CL-2MW-CL-20S MW-CL-21 SMW-CL-21 SMW-C L-21 SCOLLECTION DATE08/26/1308/26/1308/26/1308/26/1308/26/1303/12/1305/29/1308/27/1308/26/1308/26/1308/27/1308/27/1308/27/1308/27/1308/26/1308/26/1308/26/1303/11/1305/28/1308/26/13Be-7K-40 Mn-54Co-58 Fe-59 Co-60 Zn-65Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140<34< 39< 40< 44< 33< 41< 40< 47< 36< 31< 25< 30< 33< 22< 28< 39< 30< 39< 38< 27< 28< 24< 72< 86< 44< 27< 102< 70< 41< 33< 57< 24< 33< 7132< 48< 78< 67< 71< 41< 29<3<4<4<5<3<5<4<4<4<4<2<3<3+21 < 2<3<4<3<3<4<3<8< 10< 11< 11<8< 10<8< 12<8<8<5<c7<9<5<7<8<7<9<8<6<3<4<5<.6<.3<5<4<4<3<3<2< 4<4<2<3<5<3<.4<3<3<7 <3 <7 <3 <4<9 <5 <7 <4 <4<8 <6 <9 <4 <4<10 <5 <10 <5 <<5<7 <3 <6 <3 <3<9 <5 <8 <4 <5<6 <4 <7 <4 <4<11 <6 <8 <5 ' 5<8 <4 <7 <4 <4<7 <4 <7 <3 <3<6 <3 <4 <3 <2<6 <4 <5 <3 <4<7 <4 <7 <4 <4<4 <2 <4 <2 <2<6 <3 <6 <3 <3<9 <4 <8 <3 <4<'6 <3 <6. <3 <3<7" <4 <8 <3 <4<8 <4 <7 <4 <4<6 <3 <5 <3 <3<6 <3 <5. <3 <.3< 23< 31< 32< 31< 22< 29< 29<.33< 29<-25< -17< 22< 27< 15< 24< 25< 23< 28< .29< 20< 20<.8<8< 12< 12<7<9<7< 11*< 8<'8<56< 9<.9<5< 8.<9< 6< 10< 10-<7.<7MW-CL-22S 08/27/1362 +/-34 <3 <3 1<-7 ..<3 TABLE B-1.3CONCENTRATIONS OF HARD TO DETECTS IN GROUNDWATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITECOLLECTION AM-241DATECM-242 CM-243/244 PU-238 PU-239/240 U-234U-235 U-238FE-55NI-63MW-CL-14S 08/27/13MW-CL-21S 08/26/13< 0.18 < 0.06 < 0.12 < 0.12 < 0.20 < 0.17< 0.08 < 0.02 < 0.04 < 0.04 < 0.11 < 0.06< 0.12 < 0.17< 0.06 < 0.06< 62< 76< 4.2< 4.3m m m m m m m m m m m -m m m m m m m TABLE B-II.1 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/-2 SIGMACOLLECTION SITE DATE H-3SEWAGE TREATMENT PLANT 03/11/13

< 196SEWAGE TREATMENT PLANT 05/28/13

< 183SEWAGE TREATMENT PLANT 08/26/13

< 193SEWAGE TREATMENT PLANT 11/11/13

< 186SW-CL-i 03/11/13

< 190SW-CL-i 05/28/13

< 182SW-CL-i 08/26/13

< 194SW-CL-i 11/11/13

< 185SW-CL-2 03/11/13

< 195SW-CL-2 05/28/13

< 185SW-CL-2 08/26/13

< 188SW-CL-2 11/11/13

< 186SW-CL-4 03/11/13

< 196SW-CL-4 05/28/13

< 183SW-CL-4 08/26/13

< 190SW-CL-4 11/11/13

< 184SW-CL-5 03/11/13

< 193SW-CL-5 05/28/13

< 182SW-CL-5 08126/13

< 185SW-CL-5 11/11/13

< 187SW-CL-6 03/11/13

< 190SW-CL-6 05/28/13

< 184SW-CL-6 08/26/13

< 193SW-CL-6 11/11/13

< 187SW-CL-7 03/11/13

< 195SW-CL-7 05/28/13

< 184SW-CL-7 08/26/13

< 191SW-CL-7 11/11/13

< 185B-5 Table B-II.2CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMASITE COLLECTION Be-7DATESW-CL-1 08/26/13

< 29SW-CL-2 08/26/13

< 30SW-CL-4 08/26/13

< 21SW-CL-5 08/26/13

< 30SW-CL-6 08/26/13

< 32SW-CL-7 08/26/13

< 25SEWAGE TREATMENT PLANT 08/26/13

< 35K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140* 23< 26< 20< 31< 70< 23< 41<3<3<2<3<3<3<3<3<3<2<3<3<3<4<7<6<5<8<8<7<9<3<3<2<3<3<4<3<6<6<4<6<6<6<7<3<3<2<4<3<3<4<6<5<4<6<6<5<7<3<3<2<3<3<2<3<3<3<2<3<3<3<4< 22< 21< 17< 24* 25< 23< 28<6<7<6<7.< 8<9<9m m m = m m m -m -m -m m m m TABLE B-III.1CONCENTRATIONS OF TRITIUM IN PRECIPITATION WATER SAMPLESCOLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2013RESULTS IN UNITS OF PCI/LITER

+/- 2 SIGMACOLLECTION DATESITEH-3MPT-1RG-15RG-2RG-26RG-3RG-NRG-NERG-NNE02/27/1302/27/1302/27/1302/2711302/27/1302/27/1302/27/1302/27/13< 179< 170< 171< 176< 180< 177< 181< 178B-7

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