Text

Annual Radiological Environmental Operating Report
	ML12128A191
Person / Time
Site:	Clinton
Issue date:	04/25/2012
From:	Noll W; Exelon Generation Co, Exelon Nuclear
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	U-604072
	Download: ML12128A191 (132)
	v • d • e

Exelon.

Nuclear Clinton Power Station 8401 Power Road Clinton, IL 61727 U-604072 April 25, 2012 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Clinton Power Station Facility Operating License No. NPF-62 NRC Docket No. 50-461

Subject:

Clinton Power Station 2011 Annual Radiological Environmental Operating Report Exelon Generating Company, LLC (Exelon), Clinton Power Station, is submitting the 2011 Annual Radiological Environmental Operating Report. This report is submitted in accordance with Technical Specification requirement 5.6.2, "Annual Radiological Environmental Operating Report," and covers the period from January 1, 2011 through December 31, 2011.

This report provides the results for the Radiological Environmental Monitoring Program as specified in Section 5.0 and Section 7.1 of the Offsite Dose Calculation Manual.

Questions on this letter may be directed to Mr. Tom Veitch, Chemistry Manager, at 217-937-3200.

There are no commitments contained in this letter.

Respect jy, William G. Noll Site Vice President Clinton Power Station EET/blf Attachment cc:

Regional Administrator - NRC Region III NRC Senior Resident Inspector - Clinton Power Station Office of Nuclear Facility Safety - Illinois Emergency Management Agency

I -

a Docket No:

50-461 CLINTON POWER STATION Annual Radiological Environmental Operating Report 1 January Through 31 December 2011 Prepared By Teledyne Brown Engineering Environmental Services Exelon Nuclear Clinton Power Station Clinton, IL 61727 April 2012

Table Of Contents I. Sum m ary and Conclusions..............................................................................................

1 I1. Introduction..............................................................................................................

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

3 B. Im plem entation of the Objectives..................................................................

3 I1l. Program Description................................................................................................

4 A. Sam ple Collection.........................................................................................

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

6 C. Data Interpretation.........................................................................................

6 D. Program Exceptions........................................................................................

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

11 IV. Results and Discussion..........................................................................................

13 A. Aquatic Environm ent.....................................................................................

13

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

13

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

13

3. W ellW ater........................................................................................

14 4. F is h.........................................................................................................

1 5

5. Sedim ent..............................................................................................

15 B. Atm ospheric Environm ent............................................................................

15

1. Airborne..............................................................................................

15

a. Air Particulates.......................................................................

15

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

16

2. Terrestrial..........................................................................................

17 a. M ilk...............................................................................................

1 7

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

17

c. G rass.......................................................................................

18 C. Am bient Gam m a Radiation.........................................................................

18 D. Land Use Survey...................................................................................

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

19 V. References...................................................................................................................

21

Il 4

Append:ices Appendix A Tables Table A-1 Appendix B Tables Table B-1 Table B-2 Figures Figure B-1 Figure B-2 Figure B-3 Figure B-4 Appendix C Tables Table C-I.1 Table C-1.2 Table C-1.3 Radiological Environmental Monitoring Report Summary Radiological Environmental Monitoring Program Annual Summary for the Clinton Power Station, 2011 Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Radiological Environmental Monitoring Program - Sampling Locations, Distance and Directionl Clihton Power Station, 2011 Radiological Environmental Monitoring Program -Summary of Sample Collection, Clinton Power Station, 2011

',,Environmental SamplingLocations-Within One Mile of the Clinton.-.

PowerStation,;2011.

Environmental Sampling Locations Between One and Two Miles from the Clinton Power Station, 2011 Environmental Sampling Loca tions Between Two and Five Miles from the Clinton Power Station,.2011 Environmental Sampling Locations Greater Than Five Miles from the Clinton Power Station, 2011 Data Tables and Figures - Primary Laboratory Concentrations of 1-131 in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2011.

ii

Table C-11.1 Table C-11.2 Table C-11.3 Table C-11.4 Table C-111.1 Table C-111.2 Table C-IV.1 Table C-V.1 Table C-VI.1 Table. C-VI.2 Table C-VI.3 Table C-VII.1 Table C-VIII.1 Table C-VIII.2 Table C-IX.1 Table C-IX.2 Table C-X.1 Table C-X.2 Concentrations of Gross Beta in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Tritium in Drinking Water Samples Collected in the "Vicinity'of Clinton Power Station, 2011.

Concentrations of 1-131 in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in DrinkingWater Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Tritium in Well Water Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in"Ground Water Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in Fish Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in Sediment Samples Collected in the' Vicinity of Clinton Power Station, 20111.

Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2011.

Monthly and Yearly Mean Values of Gross Beta Concentrations (E-3 pCi/cu. meter) in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of 1-131 in Milk Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in Milk Samples Collected in the Vicinity of Clinton. Power Station, 2011. -

Concentrations of Gamma Emitters in Vegetation Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in Grass Samples Collected in the Vicinity of Clinton Power Station, 2011.

Quarterly TLD Results for Clinton Power Station*,201 1.

Mean Quarterly TLD Results for the Inner Ring, Outer Ring, Special Interest and Control Locations for Clinton Power Station, 2011.

iii

I,

D Table C-X.3 Fiqures Figure C-1 Figure C-2 Summary of the Ambient Dosimetry Program for Clinton Power Station, 2011.

Mean Monthlly G'ross Beta Concentrations' in Air Particulate Samples Collectedin: the&Vicinity of'CPS, 2011.

Mean QuartedrYAmbient Gamma Radiation Levels (TLD) in the Vicinity of CPS, 2011.

Appendix D Tables Table D-1 Table D-2 Table D-3 Appendix E Inter-Laborato ry Comparison Program Analytics Environmental Radioactivity Cross Check Program.

Teledyne BroWn Engineering, 2011.

ERA Environmental Radioactivity Cross Check Program Teledyne BroWn Engineering, 2011

DOE's Mixed Analyte Performance Evaluation Pro.gram(MAPEP)

Teledyne Brown Engineering, 2011 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 2011, through 31 December2011.

During that time period, 1,582 analyses were performed on. 1,455 samples. in assessing all the data gathered for this report and comparing these results with preoperational data,' it was concluded that the operatibn '.of CPS had no adverse radiological impact on the environment.

On March 11, 2011 an earthquake off the Japanese islands produced a massive tsunami that caused a nuclear accident at four of the six Fukushima Daiichi reactors. In planning for the potential-radioactive plurmiereaching the United States, Exelon increased the sampling frequency and added additional analyses of select media from pathways that were expected to 'be the most sensitive to any. increase in ambientradiation *levels.:., Low level l-!31 ýarnalyses and gamma spectroscopy analyses were performed on air particulates,.air iodine, and milk, as appropriate.-

The resulting radioactive plume was first detected in the environs of CPS on March 16, 2011. The final date of positive detection was April 13, 2011. The radionuclide ýidentifiedwas Iodine-131. "Maximum activitylevels found by media were 102 E-3 pCi/m 3 for air iodine and 2.8 pci/L'!fr milk. Samples collected were compared to offsite control locations to verify that these positive detections were not attributable to licensed activities. All other radionuclides analyzed for were below MDL (Minimum Detectable Level). All I-I 131 detected in 2011 is directly attributed to the Fukushima event in March of 2011.

The radioactive half-life of 1-131 is about 8 days. This short half-life allowed the affects of this radioactive plume to subside over about 4 weeks. As of April 14, 2011 no further impacts from the Fukushima Daiichi accident was evident.

There were zero (0) radioactive liquid releases from CPS during 2011. Releases of gaseous radioactive materials were accurately measured in plant effluents.

There were no gaseous effluent releases that approached the limits specified in the CPS Offsite Dose Calculation Manual (ODCM). The highest calculated offsite dose received by a member of the public due to the release of gaseous effluents from CPS was 2.92 E-02 or 0.0292 mRem.

Surface, drinking, and well water samples were analyzed for concentrations of tritium and gamma emitting nuclides. Drinking water samples were also analyzed for concentrations of gross beta and 1-131. Naturally occurring K-40 was detected at levels consistent with those detected in previous years. No fission or activation products were detected. No tritium or gross beta activity was detected and the required lower limit of detection (LLD) was met.

Fish and shoreline sediment samples were analyzed for concentrations of gamma emitting nuclides. No fission or activation products were detected in fish 4-A or shoreline sediment samples.

Air particulate samples were analyzed for concentrations of gross beta and gamma emitting nuclides.- Cosmogenic Be-7 and naturally occurring K-40 were detected at levels consistent.with thosedetected in previous years. No fission or activation prodUcts were detecte'd..

High.sensitivity 1-1i31,analyses were performed on weekly'air samples;. All

,results were. less.thanthe minimum. detectable concentration with the exception of 29 samples which were positivefor 1-131 These positive results are directly attributed to the Fukushima event. in March. of 2011.

. Cow milk samples were analyzed for concentrations of I-131 and gamma emitting nuclides. All 1-131 results were below the required LLDs, withithe exception of one sample-that was positive for 1-131. This positive result is directly attributed to the Fukushima event in -March of 2011., Concentrations of naturally occurring K-40 were consistent with those detected in previous years.

No fission or activation products were found.

'Food product samples were analyzed for concentrations of gamma emitting nuclides;." Concentrations of Cosmogenic Be-7. and naturally occurring K-40 were consistent with those detected in previous years. No fission or activation products were detected.

Grass samples were analyzed for concentrations of gamma emitting nuclides.

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

Environmental gamma radiation measurements were performed quarterly using thermoluminesCent dosimeters. Levelsdetected were consistent with those observed in previous years.

II.

Introduction The Clinton Power Station (CPS); consisting of one;approximately 1,140 MW

.,gross electrical power output boiling water reactor-is located in HarpiTownship, DeWitt County, Illinois. CPS is owned and. operated by Exelon and became operational in 1987. Unit No. 1 went critical on 15 February. 1987. The site encloses approximately 13,730 acres. This includes the 4,895 acre, man-made cooling lake and about 452,acres of prope-rty iot owned by Exelon. The.plant is situated on approximately 150 acres. The cooling water dischar*ge flume - which discharges to the eastern arm of the lake.- occup:ies an additional 130 acres.

Although the nuclear reactor, supporting equipment and :associated electrical generation and distribution equipment lie in Harp Township, portions of the aforementioned 13;730 acre plot reside within -Wilson,, Rutledge, DeWitt,.Creek,

-Nixon and Santa-'Anna Townships.

A Radiological Environmental Monitoring:Program (REMP) for CPS was initiated in 1987. The preoperational period formost media covers the periods May 1980 through 27 February 1987 and wassuhmmarized in a separate report. This report covers those analyses performed by Teledyne Brown Engineering (TBE) and Mirion Technologies on samples collected during the period 1 January 2011 through 31 December 2011.

A.

Objectives of the REMP The objectives of the REMP are to:

1.

Provide data on measurabie levels of radiation arid radioactive materials in the site environs.

2.

Evaluate the relationship between quantities of radioactive material released from the plant and resultant radiation doses to individuals from principal pathways of exposure.

B.

Implementation of the Objectives The implementation of the objectives is accomplished by:

1.

Identifying significant exposure pathways.

2.

Establishing baseline radiological data of media within those pathways.

3.

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

Ill.

Program Description A.

Sample Collection This section describes the general collection methods used by Environmental Inc. (Midwest-Labs) to obtain environmental samples for the CPS REMP.in 2011. Sample locations and descriptions can be found in Tables B-1 and B-2, and Figures B-1.through B-3, Appendix B. The sampling methods used by Environmental Inc. (Midwest Labs) are listed in Table B-2...

Aquatic Environment.

The aquatic environment was evaluated by performing radiological analyses on samples of surface water, drinking water, well, water, fish, and shoreline sediment. Two gallon Water samples were collected monthly from continuous samplers located at three surface water locations (CL-90, CL-91 and CL-99) and one drinking water location (CL-14). A monthly grab sample was obtained from one surface water location (CL-13).

Quarterly samples were obtained from two well water locations (CL-7D and CL-12). Allsamples were collected in new unused plastic bottles, which were rinsed at least twice with source water prior to collection. Fish samples comprising the flesh of largemouth bass, crappie, carp, bluegill and channel catfish; are the species most commonly harvested from the lakes by sporting fishermen, were collected semiannually at two locations, CL-19 and CL-105 (control). Shoreline sediment samples composed of recently deposited substrate were collected at one location semiannually, CL-7B.

Atmospheric Environment.

The atmospheric environment was evaluated by performing radiological analyses on samples of air particulate, airborne iodine, milk, food produce and grass. Airborne iodine and particulate samples were collected and analyzed weekly at ten locations (CL-1, CL-2, CL-3, CL-4, CL-6, CL-7, CL-8, CL-11, CL-15, and CL-94). The control location was CL-11.

Airborne iodine and particulate samples were obtained at each location, using a vacuum pump with charcoal and glass fiber filters attached. The pumpswere run continuously and sampled air at the rate of approximately one cubic foot per minute. The filters were replaced weekly and sent to the laboratory for analysis.

Milk samples were collected biweekly at one location (CL-1 16) from April through November, and monthly from December through March to coincide with the grazing season. All samples were collected in new J )

C unused plastic bottles from the bulk tank at that location, preserved with sodium bisulfite, and shipped promptly to the laboratory.

Food products were collected once a month from June through

-September at four locations (CL-1 14, CL-1u5, CL*1i7 and"CL-118). The "control loc~ation wasCL-114. Various broadleaf vegetable samples were collected and placed in new unused plastic'bags and sent to the laboratory for analysis.

Grass samples were collected biweekly at four locations (CL-1, CL-2, CL-8 and CL-1 16) from May through October. The control location was CL-1 16. All samples were collected in new'unused plastic bags and sent to the laboratory for analysis.

Ambient Gamma Radiation

-Direct radiation measurements were made using Panasonic 814 calcium sulfate'(CaSo 4) thermoluminescen'tdosimeters (TLD). The TLD locations were placed around the CPS site as follows:'

An inner ring Consisting of 16 locations (CL-1:1 CL-5, CL-221,CL-23, CL-24, CL-34, CL-35, CL-36, CL-42-CL-43, CL-44, CL-45, CL-46, CL-47, CL-48 a and CL-63). An additional three locations were installed as part of a volunteer comparison. study near and within the site perimeter (CL-5MM, S CL-46MMand:CL-47MM).-

An outer-ring consisting of 16 locations (CL-S1,CL-52, CL-53, CL-54, CL-55, CL-56, CL-57, CL-58, CL-60, CL-61, CL-76, CL-77, CL-78, CL-79, CL-80 and CL-81). CL-58MM was installed as part of a volunteer comparison study extending to approximately 5 miles from the site.

A special interest set consisting of seven locations (CL-37,;CL-41, CL-49, CL-64, CL651 CL-74 and CL-75) representing special interest areas.

A supplemental set consisting of 14 locations. (CL-2,'CL-3, CL-4, CL-6, CL-7, CL-8, CL-15, CL-33, CL-84, CL-90,,CL-91, CL-97,: CL-99, and CL-114).

CL-IIf represents the control location for all e'nviron'mental TLDs.

The specific TLD locations were determined by the following criteria:

1.

The presence of relatively dense population;

2.

Site meteorological data taking into account distance and elevation t

.for each of the sixteen-22 1/2 degree sectors around the site, where estimated annual dose from CPS, if any,.would be most significant;

3.

"On-hills free from local Obstructions and within sight of the vents

.(where practical);,

4;. -

And near the closest dwelling to, the HVAC and VG stacks in the

.,prevailing downwind direction.

Two TLDs - each composed of two CaSO4 thermoluminescent phosphors enclosed in plastic - were placed at each location.in a vented PVC conduit located approximately three feet above ground level. The TLDs were exchanged quarterly and sent to Mirion Technologies for analysis.

B.

Sample Analysis,.

This section describes the general analytical methodologies used by TBE and Environmental Inc. (Midwest Labs) to analyze the environmental samples for radioactivity.for the CPS REMP in 2011,.- The analytical

.procedures used by the laboratories are. listed in Table B-2.

In order to achieve the stated objectives, the current~program includes the following analyses:..,

1.

Concentrations of beta emitters in drinking water and air particulates.

2.

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

3.

Concentrations of tritium in surface, drinking and well water.

4.

Concentrations of 1-131 in air, milk, drinking water and surface water.

5.

Ambient gamma radiation levels at various on-site and off-site environs.

C.

Data Interpretation The radiological and direct radiation.data collected prior to CPS becoming operational was used as a baseline with which these operational data were compared. For the purpose of this report, CPS was considered operational at initial criticality. In addition, data were compared to previous "years' operational data for consistency and trending. Several factorsvwere 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 smallest concentration of radioactive material in a sample that would yield a net count (above background)-that-'would bedetected with only a 5% probability of falsely cdncluding'that a blank observation represents a "real" signal. The LLD was intended as a before the fact estimate of a system (includinig instrumentation, procedure and sample type) and not'as an after the fact criteria'for the presence of activity. Allanalyses were designed to achieve the required CPS detection capabilities fortenvironmental sample analysis.

2.

Net Activity Calculation and Reportinq of Results Net activity forasample Was calculated by subtracting background activity from the sample activity. 'Since the REMP measures extremely'small changes in radioactivity in the environment, backgrouhd variations may result insample activity being lower than the background activity resulting in a negative number. A minimum detectable concentration (MDC) was reported in all cases where positive activity was not detected.

Gamma spectroscopy results for each type of sample were grouped as follows:

For surface water,.well water, fish, sediment, and milk 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-1 34, Cs-1 37, Ba-140, La-1 40, and Ce-144 were reported.

For drinking water, grass, and vegetation 15 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, 1-131, Cs-134, Cs-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-1 03, Ru-1 06, Cs-1 34, Cs-1 37, Ce-141 and Ce-144, were reported.

Means and standard deviations of the results were calculated. The standard deviations represent.ther variability of measured results for different samples rather than single analysis uncertainty.

7-

D.

Program Exceptions

The exceptions described below are those that are. considered 'deviations'

.from the Radiological Environmental Monitoring Program as required by the Station's ODCM. ;By definition,,'deviations' are~permitted as delineated within NUREG-0,133,.'.'Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants", October 1978, and within Radiological Assessment Branch Technical Position, Revision 1, November 1979, which states...."Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions., seasonal unavailability, malfunction of automatic sampling equipment and.ofther legitimate. reasons".... The below section addresses the reporting requirements found within Section 7.1 of the

, Station's ODCM.

January 19, 2011, IR #1164436, ODCM air sampler CL-3 was found not collecting due to a seized motor. The motor was replaced and the operability was restored.

The sample timer indicated a sampling interruption of approximately 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months .

February 3, 2011, IR #1170672 Non-ODCM water compositor CL-99 was found unable to collect samples due to freezing of the North Fork Greek.

February 3, 2011,:IR #1193979 ODCM air sampler.CL-8 and non-ODCM air samplers CL-1 and CL-7 were found to have timer shortages ranging from 7 to 18 hours2.083333e-4 days 0.005 hours 2.97619e-5 weeks 6.849e-6 months , indicating power outages at each location during the sampling period. The cause of the outages was most likely the local heavy snow event experienced during the collection period.

February 23, 2011, IR #1179038 Non-ODCM water compositor CL-99 was found unable to sample due to a dead battery module. A replacement compositor was installed at the location, but was found to be inoperable as well.

The compositors were repaired by a third party vendor, and sampling capability was restored on April 22, 2011. Weekly grab samples were taken while the compositor was inoperable.

March 30, 2011, IR #1194782 ODCM water* compositor CL-91 was' found unable to collect due to an apparent issue wit-h the saample line extendinrg i;nto Clinton Lake.

Plant Maintenance perso nel ýclea red the'sample line and restored sampling capability on April 7,-2011. Weekly grabzsamples were

'takenwhile the compositor-was inoperable.

Apri120,:2011l, IR#1205388 ODCM water'compositor CL-91 was found unable tocollect sample due to an apparent blocka ge of the samplingline: Plant Maintenance personnel deteirmined that-a faulty'fitting connecting the sampling line to the peristaltic pump tubing was causing air in-leakage and loss of suction. The connection was repaired and functionality was restored.,

May 25', 2011, iR,#1220595 ODCM water compositor CL-91 Was found without power to the sampling enclosure. When the compositor was checked later in the day, electrical service had been restored and the, sampler was returned to operable 'condition."The cause of' the outage was indeterminate.

June 29, 2011, IR #1236653 Non-ODCM air samplers CL.-l, CL-4, and CL-6 showed low timer readings, indicating power outages at each location during the sampling period. Shortage durations were 4 to 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months . The outages were most likely due to electrical storms in the area during the collection period.,-

.June 29, 2011, IR #1234631 July 27, 2011, IR #1244671 August31,2011, 1R#1258061 September 28, 2011, IR #1269488 Due to extremely hot and dry environmental conditions, the June, July, August, and September vegetation samples from ODCM gardens CL-1 15 and CL-18 were supplemented with non-vegetable leaves from the vicinity of each garden. Cabbage, lettuce, swiss chard and spinach were planted in each garden at the beginning of the growing season. However, contrary to the requirement to collect three varieties of broadleaf vegetation from each location, only: cabbage grew in sufficient volume and for a sufficient time period to collect throughout the growing season.

When volume was available, lettuceand spinach.samples were collected. As required, vegetation samples were supplemented with corn and tree leaves. A vendor was contracted to water each location as needed,,but the. relief was not sufficient to prevent sampling exceptions for the less hearty plantvarieties. Following the growing season, soil remediation was performed at CL-1 19 and CL-118 via deep tilling and addition of black soil..,

.August.10, 2011,,, IR..#,1249963 September 7, 2011, IR #1,260383 November 2, 2011, I R #1285279 ODCM water compositor CL-91 was found on three occasions to be unable to sample because of lowering of Clinton Lake level below the sampling ;line elevation. Each time the sampling line was repositioned below the surface of the water (but off of the bottom of the lake to prevent debris-fromclogging the intake) and sampling capability was restored. On, November 21, 2011, the sampling line

.was permanently extended by approximately 20' to permit continued sampling during historically low lake levels.

October 5, 2011, IR #1272939 ODCM water compositor CL-91 was found to have collected a much larger volume of water than was expected since the previous week's equipment check. A faulty piece of sample tubing had resulted. in anerror that caused the sampler-to pump beyond the

..specified program time. The tubing issue was resolved, and the volume was adjusted to the expected delivery. Because the initial rate of sampling was not constant, the October sample did not meet the definition of a composite sample.

October 12, 2011,.IR#1275688 Non-ODCM air sampler CL-1 showed a timer shortage of approximately 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , indicating a power outage during the collection period. The cause of the outage was indeterminate.

November 9, 2011, IR #1289508 ODCM water compositor CL-14 was secured for approximately 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months in support of emergent maintenance to repair a downed power pole on site. The maintenance required isolation of the power supply to the comipo-sitor.

November 16, 2011,, IR #1291997 OtDCM water compositor CL-90 was fund to be unable to sample due'to a sheared roller in the peistaltic pump. The roller was repaired and the com'positor was returned toservice.

November 16,12011, IR #1291998-ODCM air sampler CL-6'sh*wed a"timer shortage of approximately 9 hours1.041667e-4 days 0.0025 hours 1.488095e-5 weeks 3.4245e-6 months , indicating a power-outage during the'sampling period.

Ameren was contacted for information regarding work that may have affected the instrument, but none was identified, and the cause of the outage was indeterminate:

November23, 2011, IR#1294114 ODCM air sampler CL-6*showed atimer shortage of approximately 9 hours1.041667e-4 days 0.0025 hours 1.488095e-5 weeks 3.4245e-6 months , indicating a :power outage during the sampling period.

Ameren was contacted for information regarding work that may

'have affected the instrument, but' none-was identified, and the cause of the outage was indeterminate.

Program exceptions were reviewed to understand the causes of the exception and to return to ODCM sample compliance before the next sampling frequency period.

The overall sample recovery rate indicates that the appropriate I proctedures and equipment are in place toassure reliable program implementation.

E.

Program Changes Starting in August, 1-131 is now being analyzed in drinking water by the low level method to detect down to 1 pCi/L.

During a2008 annual NRC ODCM REMP inspection, there was an enhancement. An Inspector observed the orientation6of an environmental area TLD and as an enhancement, suggested that if relocated approximately sixty (60) feet closer towards the Station, Would serve better as a direct line of sight in a cleared opening, unobstructed from tree branches and leaves.

Over the twenty (20) plus years of Unit Operation, the surrounding I

I environment consisting of tress and their branches have grpwn, thus challenging the guidance ANSI N545-1975, which requires TLDs should be movedas -far as possible from large..or dense objects that may cause directional anomalies or otherwise perturb-the radiation field. Although historical reviews were performed that resulted in no~anomalous data relative to the radiation field, as part of our extent of condition, all environmental TLDs were evaluated as to locations and their respective orientations with the following determination:.

Completed:

An extent of condition review examined. all Environmental Area TLD locations and their respective orientations and identified three (3) additional locations as candidates for additional monitoring.

Clinton Power Station has installed. four (4) TLDs in close proximity to the original TLDs:. CL-5MM, CL-46MM, CL-47MM and CL-58MM.

These Environmental Area TLDs located within the same meteorological sector near the four (4) locations, were measured and studied for comparison (Table C-X.1)'.

o TLDs CL-05MM and CL-T47MM showed a slight increase in the third quarter of 2011 by a difference of 0.5 and 0.9 mRem respectively. The fourth quarter of 2011 showed less exposure than the originally installed locations.

o TLD CL-46MM showed a slight increase for all four quarters

%of 2011, averaging 3.0 mRem higher than the originally installed location.

o TLD CL-05MM and CL-58MM was slightly higher in the first quarter of 201.1 by a difference of 0.4. and 0.3 mRem

.respectively. -

o TLDs CL-47MM and CL-58MM was slightly less during the second quarter of 2011 by a differenceof 0.2 and 2.1 mRem.

Because the TLD results from this study are not part of the ODCM REMP averages, the results are for comparison purposes only.

In conclusion to the study, a review of all of the data collected from the voluntary dosimeter locations indicates one significant trend. The data from CL-46MM has consistently been higher than that measured at 1

6l

-location CL-46.'Because of this-tirehnd, the permanent location for CL-46 has been' moved to the -previous location of; CL-46MM as of the second quarter of 2012., Because no trends'were identified at the other voluntary locations', none wer'e relocated."The comparison study has been

- o...

ncluded and will not continie through.2012."5 IV.

Results and Discussion A.

Aquatic Environment 1. " SurfaceWater Samples were taken hourly,`from a-continuous, compositor at three locations (CL-90, CL-91 and CL-99) on a monthly schedule and grab 'samples were taken monthly-from onestation (CL-13). The following analyses were performed.'

Iodine-131 Monthly samples from location CL-90 Were analyzed for 1-131 activity (Table C-1.1, Appendix C). No 1-131 was found and the required LLD was met.

Tritium Monthly samples from all locations were composited quarterly and analyzed for tritium activity (Table C-1.2, Appendix C). No tritium was detected in any samples and the required LLD was met.

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-1.3, Appendix C). Naturally occurring K-40 was found in one of 12 samples at location CL-91 at a concentration of

.179 pCi/I. No other nuclides were detected and all required LLDs were met.

2.

Drinking Water Monthly samples were collected from a continuous compositor at one location (CL-14). The following analyses were performed:

Gross Beta Monthly samples were analyzed for concentrations of gross beta (Tables C-II.1, AppendixC). -Gross beta was not detected in any samples.

Tritium Monthlysamples were composited quarterly and analyzed for tritium activity (TableC-11.2, Appendix.C). No tritium was detected in any samples and the required LLD was met.

Iodine-131 Starting in August, monthly samples from location CL-14 were analyzed for 1-131 activity (Table C-11.3, Appendix C). No 1-131 was found and the required LLD was met.

Gamma Spectrometry Monthly samples were analyzed for gamma emitting nuclides (Table C,-114, Appendix-C). Naturally occurring K-40 was found in one-sample at.location CL-14.. No.other nuclides were detected and all required LLDs were met.:

3.

Well Water Quarterly grab samples were collected at two locations (CL-7D and CL-12, consisting of CL-12R [a raw water sample from this well]

and CL-12T [same well water, but after treatment and available for consumption]). The following analyses were performed:

Tritium Samplesfrom all locations were analyzed for tritium activity (Table 0C-I11.1, Appendix C). No tritiumwas detected in any samples and the requiredLLD was met.

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-111.2, Appendix C). Naturally occurring K-40 was found in one of four samples for locations CL-12R and CL-7D. The concentrations ranged from 32 to 33 pCi/I. No other nuclides were detected and all required LLDs were met.

4.

Fish

. Fish samples comprised of'carp, largemouth bass, bluegill, crappie and channelcatfish were collected at two Ibcations (CL-1 9 and CL-105) semiannually. The following arnalysis'was performed:

Gamma Spectrometry The edibleportion' of fish samples from both locations was anaýlyzed for gamma emitting nuclides (Table ýC-IV.l, Appendix C).

Naturally occurring K-40 was found at both stations. No fission or activation products were found. No other nuclides were detected and the required LLDs were met.

5.

Shoreline Sediment Aquatic shoreline' sedimeht samples Were'collected at CL-7B semiannually. The following analysis was performed:

Gamma Spectrometry Shoreline sediment samples Were analyzed for gamma emitting nuclides (Table C-V.1, Appendix C).. *Naturally occurring K-40 was detected in both samples. :No fission or activation products were found. No other nuclides were detected and the required LLDs were met.

B.

Atmospheric Environment :

.1'.

Airborne

a.

Air Particulates Continuous air particulate samples were collected from 10 locations on a weekly basis.i The 10 locations were separated into three-groups: Group-I'represents locations within one mile of the CPS site boundary (CL-2, CL-3, CL-4, CL-6, CL-15, and CL-94). Group II represents the locations at an intermediate distance within'one to five miles of CPS (CL-1, CL-7, and CL-8), and Group III represents the control location greater than five miles from CPS (CL-1 1). The following analyses were performed:

.1 Gross Beta Weekly samples were analyzed for concentrations of beta emitters (Table C-VI.1 and C-VI.2 and Figure C-1, Appendix C).

Detectable gross beta activity was observed at all locations.

Comparison of results among the three groups aid in determining the effects, if any, resulting from the operation of CPS. The results from-the On-Site locations (Group I) ranged from 8 to 44 E-3 pCi/mi3 with a mean of 21 E-3 pCi/m 3. The results from the Intermediate Distance location (Group II) ranged from 7 to 47 -E-3 pCi/m 3 with a mean of 20 E-3 pCi/m3. The results from.the Control locations (Group III) ranged from 10 to 47 E-3 pCi/m3 with a mean of 22 E-3 pCi/mi3. Cormparison of the:2011 air particulate data with previous years data indicate no effects from the operation of CPS (Figure C-5, Appendix C). In addition, a comparison of the weekly mean values for 2011 indicate no notable differences among the three groups.

Gamma Spectrometry Weekly samples were composited quarterly and analyzed for gamma emitting nuclides (Table C-VI.3, Appendix C).

Naturally occurring isotope Be-7 due to cosmic ray activity was detected in most samples. Naturally occurring K-40 was detected.,in three samples. No other nuclides were detected and all required LLDs were met. Additional sampling occurred in the weeks immediately following the Fukushima event in,201 1. Naturally occurring Be-7 was

-detected in one sample. All other nuclides were less than the MDC.

b.

Airborne Iodine Continuous air samples were collected from 10 locations (CL-1, CL-2, CL-3, CL-4, CL-6, CL-7, CL-8, CL-11, CL-15 and CL-94) and analyzed weekly for 1-131 (Table C-VII.1, Appendix C),. All results were, less than the MDC and the required LLD was met with the exception of 29 samples which were -positive for 1-131. These positive results are directly attributed to the Fukushima event in March of 2011.

16-

2.

Terrestrial a..

Milk Samples were collected fromrnCL-i 16 biweekly April through November and monthly December through March, to coincide with the grazing season. The following analyses were performed::

I~odi ne-I 31 Milk samples were analyzed forconcentrations of 1-131

-(Table C-LVIII.1, Appendix C)' The required LLD was met with the exception of one milk sample which was positive for 1-131 at a concentration of 2.8 pCi/l.. This positive result is directly attributed to the Fukushima event in March of 2011.

Gamma SpectrometrV Each milk sample was analyzed for concentrations of gamma emitting nuclides (Table C-VIII.2, Appendix C).

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

No other nuclides were detected and all required LLDs were met.

b.

Food Products Broadleaf vegetation sampiles and substitutes as noted in exceptions were collected from four locations (CL-1 14, CL-I15, CL-1 17 and CL-1 18) monthly June through

'September, to coincide with the harvest season. The following analyseswere performed:

Gamma Spectrometry Each food product sample and substitutions as noted earlier were analyzed for concentrations of gamma emitting nuclides (Table C-IX.1, Appendix C).

Naturally occurring Be-7 due to cosmic ray activity was detected in most'samples. Naturally occurring K-40 activity was found in all samples. No other nuclides were detected and all required LLDs were met.-

17-

. j c..

Grass

_Samples were collected from four locations (CL-1, CL-2, CL-8, and CL-1 16),biweekly May through October. The following analyses wereperformed:,

Gamma Spectrometry Each grass.s;ample was analyzed for concentrations of gamma emitting nuclides (Table C-IX.2, Appendix C).

.Naturally occurring Be-7 due to cosmic ray activity was detected in all samples. Naturally occurring K-40 activity was found in all samples. No other nuclides were detected and all required LLDs were met.

C.

Ambient Gamma Radiation Ambient gamma radiation levels were measured utilizing Panasonic 814 (CaSO4) thermoluminescent dosimeters. Fifty-four TLD locations were established around the site. Results of TLD measurements are listed in Tables C-X.1 to C-X.3, Appendix C.

A total of 216 TLD measurements were made in 2011. The average dose from the inner ring was 19.0 mR/quarter. The average dose from the outer ring was 19.3 mR/quarter. The average dose from the special interest group was 1 9.0 mR/quarter. The average dose from the supplemental group was 18.1 mR/quarter. The quarterly measurements ranged from 15.2 to 22.6 mR/quarter.

The inner ring. and outer ring measurements compared well to the Control Station, CL-11, which ranged.from 17.1 mR/quarter to 19.5 mR/quarter with an-average measurement of 17.8 mR/quarter. A comparison of the Inner Ring and Outer Ring data to the Control Location data indicate that the ambient gamma radiation levels from all the locations were comparable. The historical ambient gamma radiation data from the control location were plotted along with similar data from the Inner and Outer Ring Locations (Figure C-2, Appendix C).

D.'

Land Use Survey A Land Use Survey conducted during the July through October 2011 growing season around the Clinton Power Station (CPS) was performed by Environmental Inc. (Midwest Labs) for Exelon to comply with Clinton's Offsite Dose Calculation Manual, section 5.2. The purpose of the survey was to document the nearest resident, milk producing animal and garden of greater than 538 ft2 in each of the sixteen 22 1/2A degree sectors around the site. The'distance and direction' of all 'locations from the CPS Station

-HVAC vent-stack were p0sitioned using: Global Positioning System (GPS) technology. There were "no changes requiredito the CPS REMP, as a result of this survey. The results of this survey are summarized below.

Distance in Sector 1 N 4ENE" 5E 6 ESE 7 SE 8 SSE 9 S

10. SSW 11SW 12 WSW 13W 14 WNW

" 15 NW 16 NNW Miles from the CPS Station H Residence'.

Ga rden (km)

(km) 1.5 1.5 1.5 4.8 2.1 3.5

'2.9 29.

17

,4 5.1 5.3 3.9

.7.1 2.9 4.5 4.8 6.6 4.7

>-8 1.2

.5.9 3.6 3.7 2

3.2 2.6 2.6 2.7

>8 2.1 2.1 IVAC Vent Stack

'Milk Farm (km) 1.5 3.8

>8

>.8 4.5

>8

>'8

>8 5.5.

>8

>.8

>8 2.1 E.

Summary of Results - Inter-Laboratory Comparison Program The primary laboratories-analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation and water matrices for 19 analytes (Appendix D). The PE samples, supplied by Analytics Inc.,

Environmental Resource Associates (ERA).and DOE's Mixed Analyte Performance Evaluation Program (MAPEP), were evaluated against the following pre-set acceptance criteria:

1.

Analytics Evaluation Criteria-Analytics' evaluation report provides a ratio of TBE's result and Analytics' known value. Since flag values are not assigned by Analytics, TBE-ES evaluates the reported ratios based on internal QC requirements, which are based on the DOE MAPEP criteria.

2.

ERA Evaluation Criteria ERA's evaluation report provides an acceptance range for control and warning limits with associated flag values. ERA's acceptance limits are established per the USEPA, NELAC, state specific PT program requirements or ERA's SOP for the Generation of

.Performance Acceptance Limits, as applicable. The acceptance

-limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.

3. :

l DOE.Evaluation Critera.

.MAPEP's evaluation report provides an acceptance range with associated flag values.

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

For the primary,laboratory, 14 out of 18 analytes'met the specified acceptance criteria. Four analytes did not meet the specified acceptance criteria for thefollowing reason:

1. 'Teledyne Brown Engineering's Analytics March 2011 Cr-51 in milk result of 398 pCi/L was higher thanthe known value of 298 pCi/L, resulting in a found to known ratio of 1.34. NCR 11-13 was initiated to investigate'this failure. There was a slightly high bias in all the gamma activities. The June gamma results in milk did not show a high bias. No further action was required.

2. Teledyne Brown Engineering's ERA May 2011 Gross Alpha in water result of 64.1 pCi/L was higher than the known value of 50.1 pCi/L, which exceeded the upper control limit of 62.9 pCi/L. NCR 11-08 was initiated to investigate this failure. The solids on the planchet exceeded 100 mg, which was beyond the range of the efficiency curve.

Teledyne Brown' Engineering's MAPEP March 2011 Gross Alpha in air particulate result of 0.101 Bq/sample was lower than the known

'value of 0.659 Bq/sample, which exceeded the lower control limit of 0.198 Bq/sample. NCR 11-11 was initiated to investigate this failure. The air particulate filter~was counted on the wrong side.

3., Teledyne Brown Engineering's ERA November 2011 Sr-89 in water result-of 81' 0 pCi/L was higher than the known value of 69.7 pCi/L, which exceeded the-upper control limitof 77.9pCi/L. NCR 11-16 was initiated:to investigate this failure.* The TBE reported value to known ratio of 1.16 fell Within the acceptable'range of +/- 20%, which TBE considers acceptable."

4. Teledyne Brown Engineering's MAPEP March 2011 Sr-90 in soil, air particulate and vegetation were non-reports that were evaluated as failed. NCR 11-11 was initiated to investigate these failures.

MAPEP evaluated the non-reports as failed due to not reporting a previously reported analyte.

For the secondary laboratory, Environmental, Inc., 12 out of 14 analytes

..met the'specified acceptance criteria.

1. Environmental Inc.'s ERA October 2011 Cs-i 34 in water result of 38.8 pCi/L was higher than the known value of 33.4 pCi/L, which exceeded the upper control limit of 36.7 pCi/L.' The sample was reanalyzed. The reanalyzed result of 32.9 was acceptable.

2. Environmental Inc.'s MAPEP February 2011.Sr-90 in air particulate result of 1.89 Bq/sample was, higher than the known value of 1.36 Bq/sample, which exceeded the upper control limit of 1.77 Bq/sample. No errors were foundin the calculation or procedure.

The reanalyzed result of 1.73 Bq/sample was acceptable.

3. Environmental Inc.'s MAPEP August 2011 Sr-90 in soil result of 219.4 Bq/kg, less than the known value of 320 Bq/kg, was below the lower control limit of 224 Bq/kg., The sample was reanalyzed in triplicate through a strontiUm column. The reanalyzed result of 304.2 Bq/kg was acceptable.

The-Inter-LaboratoryComparison Program provides evidence of "in control", counting systems and methods,. and that the laboratories are producing accurate and reliable data.

V.

References

1.

American National Standards Institute, Inc., "Performance, Testing and Procedural Specifications for Thermoluminescent Dosimetry," ANSI N545-11975.

2.

Code of Federal Regulations, Title 10, Part-20 (Nuclear Regulatory Commission).

3.

CPS 2011 Annual Radioactive Effluent Release Report.

4.

"Environmental Radioactivity," M. Eisenbud, 1987 (E187).

5-..

"Natural Radon-Exposure in the United States,'"' Donald.T. Oakley, U.S.

Environmental Protection Agency. ORP/SID 72-1,. June 1972.

6.

Federal Radiation Couincil Report No: 1, "'Background Material for the Development of Radiation Protection Standards," May 13, 1960.

7.

InternationaliCommission on Radiation Protection,Publication 2,'.Report of Committee li on Permissible' Dose for'Internal: Radiation,' (1959) with 1962 Supplement issued in ICRP Publication 6; Publication 9,

-"Recommendations on Radiation Exposure," (1965);,ICRP Publication 7 (1965), amplifying specific recommendations of Publication 26 (1977).

8.

International Commission on Radiation Protection,'Publication No. 39 (1984), "Principles of Limiting Exposure to the PubliC to Natural Sources of Radiation"..

9.

"Radioactivity in-the Environment: Sources, Distribution and Surveillance," Ronald L. Kathren, 1984.:

10.

National Council on Radiation Protection and Measurements, Report No.

22, "Maximum Permissible Body. Burdens and Maximum Permissible Concentrations of Radionuclides in Air and Water for Occupational Exposure," (Published as National Bureau of Standards Handbook 69, issued June 1959, superseding Handbook 52).

11.

National Council on Radiation Protection and Measurements, Report No.

39, "Basic Radiation Protection Criteria," January 1971.

12.

National Council on Radiation Protection and Measurements, Report No.

44, "Krypton-85 in the Atmosphere - Accumulation, Biological Significance, and Control Technology," July 1975.

13.

National Council on Radiation Protection and Measurements, Report No.

91, "Recommendations on Limits for Exposure to Ionizing Radiation,"

June 1987.

14.

National Council on Radiation Protection and Measurements, Report No.

93, "Ionizing Radiation Exposure of the Population of the United States,"

September 1987.

15.

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

16.

United States Nuclear Regulatory Commission, Regulatory Guide 4.1, "Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants," Revision 1, April 1975.

17.

United States Nuclear Regulatory Commission, Regulatory Guide 4.13, "Performance, Testing and Procedural Specifications for Thermoluminescence Dosimetry: Environmental Applications, "Revision 1, July 1977.

18;

-,-United States Nuclear Regulatory Commission, Regulatory Guide 1.109,

- "CalcuIlation of Annual Dose to Man"from Routine Releases of Reactor Effluents forthe:Purpose of.Evaluating Compliancewith 10CFR Part 50, Appendix, I, "Revision l, October 1977.

19.,

United States: Nuclear Regulatory Commission Branch-Technical Position, "An Acceptable Radiological Environmental Monitoring Program,"

Revision.,

November 1979.:

20.'

United States Nuclear Regulator Commission, RegulatoryGuide 4.15, "Quality Assurance for Radiological Monitoring Programs:(Norm Operations).- Effluent Streams and theEnvironment;.".Revision 1,-

February 1979..

21.

Technical Specifications, Clinton Power Station, Unit'No. 1, -Docket No.

50-461, Office of Nuclear Reactor-Regulation,. 1,986..Facility Operating License Number NPF-62..

22.

Clinton Power Station, Updated Safety Analysis.Report.

23.

Clinton Power Station, Unit 1,VOff-Site Dosec'Clculation Manual.

Intentionally left.blank

APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT

SUMMARY

Intentionally left blank

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS SURFACE WATER (PCI/LITER) 1-131 H-3 12 16 48

<LLD NA 0

0 2000

<LLD

<LLD GAMMA BE-7 K-40 MN-54 CO-58 FE-59 CO-60 NA

<LLD NA

<LLD 15

<LLD 30

<LLD 15

<LLD

<LLD 48 (1/24)

<LLD

<LLD 48 (1/12)

CL-91 CONTROL PARNELL BOAT ACCESS 6.1 MILES ENE OF SITE 0

0 0

0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR

'TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS SURFACE WATER (PCIILITER)

ZN-65 NB-95 ZR-95 CS-134 CS-137 BA-140 LA-140 CE-144 30

<LLD 15

<LLD 30

<LLD 15

<LLD 18

<LLD 60

<LLD 15

<LLD NA

<LLD

<LLD-0 0

0 0

THE MEAN-AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS DRINKING WATER (PCI/LITER)

GR-B 12 H-3 4

1-131 GAMMA BE-7 5

4

<LLD 2000

<LLD I

<LLD NA

<LLD NA 179 (1/12) 15

<LLD NA NA NA 0

12 NA NA K-40 179 (1/12)

CL-I 4 INDICATOR STATION PLANT SERVICE BLDG ONSITE 0

0 0

MN-54 CO-58 NA NA 15

<LLD FE-59 30

<LLD NA THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS DRINKING WATER (PCI/LITER)

CO-60 ZN-65 NB-95 ZR-95 15

<LLD 30

<LLD 15

<LLD 30

<LLD 15

<LLD

18.

<LLD 60

<LLD NA NA NA NA NA NA NA NA 0

0 0

1-131 0

0 0"~

CS-134 CS-137 BA-140 0,

0 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS DRINKING WATER (PCI/LITER)

LA-140 CE-144 15

<LLD NA

<LLD 2000

<LLD NA NA NA WELL WATER

)>

(PCI/LITER)

H-3 12 12 GAMMA BE-7 K-40 MN-54 CO-58 FE-59 NA

<LLD NA 33 (2/12)

(32/33) 15

<LLD 15

<LLD 30

<LLD NA NA NA NA NA 33 (1/4)

CL-I 2R INDICATOR DEWITT PUMP HOUSE 1.6 MILES E OF SITE 0

0 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS WELL WATER (PCI/LITER)

CO-60 ZN-65 NB-95 ZR-95 CS-134 CS-137 BA-140 LA-140 15

<LLD 30

<LLD 15

<LLD 30

<LLD 15

<LLD 18

<LLD 60

<LLD 15

<LLD NA NA NA NA NA

-NA NA 0

0 0

0' THE-MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES -

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS WELL WATER (PCI/LITER)

FISH (PCI/KG WET)

CE-144 GAMMA BE-7 NA

<LLD NA

<LLD NA 0

16

<LLD K-40 MN-54 CO-58 FE-59 C0-60 ZN-65 NA 3025 (8/8)

(2510/3440) 130

<LLD 130

<LLD 260

<LLD 130

<LLD 260

<LLD 3113 (8/.8)

(2360/4380) 3113 (8/8)

(2360/4380)

CL-105 CONTROL LAKE SHELBYVILLE 50 MILES S OF SITE

<LLD

<LLD THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS 00 FISH (PCI/KG WET)

SEDIMENT (PCI/KG DRY)

NB-95 ZR-95 CS-134 CS-137 BA-140 LA-140 CE-144

GAMMA BE-7 NA

<LLD NA

<LLD 130

<LLD 150

<LLD NA

<LLD

<LLD 0

0 0

2 NA 0

- THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE-VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS SEDIMENT (PCI/KG DRY)

K-40 NA 6590 (2/2)

(5830/7350)

MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 NA

<LLD NA

<LLD NA.

<LLD NA

<LLD NA NA NA NA NA 6590 (2/2)

(5830/7350)

CL-07B INDICATOR CLINTON LAKE 2.1 MILES SE OF SITE 0

0 0

0~

0 0

-NA -

NA NA THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS SEDIMENT (PCI/KG DRY)

CS-134 CS-137 BA-140 LA-140 CE-144 0

150

<LLD 180

<LLD NA

<LLD

.10 21 (467/468)

(.7/47)

NA 70 (35/36)

(49/102)

NA 31 (2/36)

(24/38)*

NA NA NA NA NA 0

0 0

AIR PARTICULATE (E-3 PCI/CU.METER)

GR-B 520 22 (52/52)

(10/47)

GAMMA BE-7 40

.72 (4/4)

(64/86)

(19..

(1/4) 22 (52/52)

(8/44) 85 (4/4)

(58/102) 31 (2/4)

(24/38)

CL-6 INDICATOR'...

CLINTONS RECREATION AREA 0,.7,MILES WSW OF SITE CL-7 INDICATOR MASCOUTIN RECREATON AREA 2.3 MILES SE OF SITE K-40 CL-15 INDICATOR RT. 900N RESIDENCE 0.9 MILES N OF SITE 0

- THE MEAN AND 2 STANDARD DEVIATION VALUES-ARE CALCULATEDýUSING-THE POSITIVE-VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS AIR PARTICULATE (E-3 PCI/CU.METER)

CO-60 NB-95 ZR-95 RU-103 RU-106 NA

<LLD NA

<LLD

<LLD 0

0 0

CS-134

-50

<LED..........

<LLD 0

CS-137 60

<LLD

<LLD 0

CE:141.

NA

<LLD

<LLD 0

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS AIR PARTICULATE (E-3 PCI/CU.METER)

AIR IODINE (E-3 PCI/CU.METER)

CE-144 GAMMA 1-131 NA

<LLD

<LLD 0

520 MILK (PCI/LITER) 1-131 21 21 GAMMA BE-7 70 54 (27/468)

(29/102) 1 NA NA NA NA NA

NA NA NA NA NA NA 84 (2/52)

(78/90) 2.8 (1/21)

<LLD 84 (2/52)

(78/90) 2.8 (1/21)

CL-I 16 CONTROL PASTURE IN RURAL KENNEY 14 MILES WSW OF SITE CL-I 16 CONTROL PASTURE IN RURAL KENNEY 14 MILES WSW OF SITE.

0 CL-Il CONTROL AMERENIP SUBSTATION 16 MILES S OF SITE 0

K-40 1242 (21/21)

(1070/1400) 1242 (21/21)

--(1070/1400)

MN-54 CO-5 8 FL-59

<LLD

.0.

0 0

THE MEANAND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING-THE POSITIVE-VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS MILK (PCI/LITER)

CO-60 ZN-65 NB-95 ZR-95 CS-134 CS-137 BA-140 NA NA NA NA NA NA NA NA 15 NA 18

-NA 60 NA 15 NA

<LLD

<LLD 0

' I LA-140.

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS MILK (PCI/LITER)

VEGETATION (PCI/KG WET)

CE-144 GAMMA BE-7 NA NA

<LLD 48 NA 803 (33/36)

(170/3070)

NA 5025 (36/36)

(1620/13800) 386 (11/12)

(194/688) 6003 (12/12)

(3280/9970) 1072 (11/12)

(208/3070) 6282 (12/12)

(2470/13800)

CL-I 15 INDICATOR SITE'S SECONDARY ACCESS ROAD 0.7 MILES NE OF SITE CL-I 18 INDICATOR SITES MAIN ACCESS ROAD 0.7 MILES NNE OF SITE 0

0 K-40 MN-54 CO-58 FE-59 CO-60 ZN-65 NA

<LLD NA

<LLD.

NA

<LLD.

<LLD

.0 THE MEAN-AND 2 STANDARD DEVIATION VALUES ARE-CALCULATED USING THE-POSITIVE VALUES -

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS VEGETATION (PCI/KG WET)

NB-95 ZR-95 1-131 CS-134 CS-137 NA

<LLD NA

<LLD 60

<LLD 80

<LLD NA -

<LLD NA

<LLD

<ILD 0

0 0

0' 0

BA-140 LA-140 CE-144",

THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT.COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS GRASS (PCI/KG WET)

GAMMA BE-7 52 NA 1414 (39/39)

(243/3283)

NA 5371 (39/39)

(3424/7898) 1784 (13/13)

(1229/3001) 5337 (13/13)

(3728/7027) 1784

.(13/13)

(1229/3001) 5975 (13/13)

(3586/7898)

CL-I 16 CONTROL PASTURE IN RURAL KENNEY 14 MILES WSW OF SITE CL-08 INDICATOR DEWITT CEMETERY 2.2 MILES E OF SITE K-40 0

ON MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 NA

<LLD NA

<LLD

<LLD 0

0 0

NA

<LLD 10 0

NA

<LLD NA

<LLD:

0 THE-MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE4POSITIVE VALUES -- --

FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2011 Name of Facility: CLINTON POWER STATION DOCKET NUMBER:

50-461 Location of Facility: DEWITT COUNTY IL REPORTING PERIOD:

2011 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN (M)

LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN (M)

MEAN (M)

STATION #

NUMBER OF PATHWAY SAMPLED -

ANALYSIS ANALYSIS LOWER LIMIT (F)

(F)

NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT)

(LLD)

MEASUREMENTS GRASS (PCIUKG WET)

ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 CE-144 NA

<LLD 60

<LLD 80

<LLD NA

<LLD NA-

<LLD NA

<LLD

<LLD 0

0 0

DIRECT RADIATION (MILLI-ROENTGEN/QTR.)

TLD-QUARTERLY 216 NA 18.9 1 ° (212/212)

(15.2/22.6) 17:8 (4/4)

(17.1/19.5) 20.1 (4/4)

(f8.7/22.5)

CL-60 INDICATOR 4.5 MILES SW THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

Intentionally left blank

APPENDIX B LOCATION DESIGNATION, DISTANCE & DIRECTION, AND SAMPLE COLLECTION & ANALYTICAL METHODS

Intentionally left blank

A TABLE B-1:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Clinton Power Station, 2011 Location Location Description Distance & Direction From Site A.

Surface Water CI-13 CL-90 CL-91 CL-99 Salt Creek Bridge on Rt. 10 (indicator)

Discharge Flume (indicator)

Parnell Boat Access (control)

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

Drinking (Potable) Water CL-14 C.

Well Water Station Plant Service Bldg (indicator)

Mascoutin Recreation Area (indicator)

DeWitt Pump House (indicator)

Onsite CL-7D CL-12T CL-12R 2.3 miles ESE 1.6 miles E 1.6 miles E 14 miles WSW D.

Milk - bi-weekly / monthly CL-1 16 Dement Dairy (control)

E.

Air Particulates / Air Iodine CL-1 CL-2 CL-3 CL-4 CL-6 CL-7 CL-8 CL-11 CL-15 CL-94 Camp Quest Clinton's Main Access Road Clinton's Secondary Access Road Residence Near Recreation Area Clinton's Recreation Area Mascoutin Recreation Area DeWitt Cemetery Illinois Power Substation (Control)

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

Lake Shelbyville (control) 1.8 miles W 0.7 miles NNE 0.7 miles NE 0.8 miles SW 0.7 miles WSW 2.3 miles SE 2.2 miles E 16 miles S 0.9 miles N 0.6 miles E 3.4 miles E 50 miles S F.

Fish CL-19 CL-105 G.

Shoreline Sediment CL-7B Clinton Lake (indicator)

H.

Food Products 2.1miles SE CL-1 14 CL-1 15 CL-1 17 CL-1 18

1.

Grass Cisco (Control)

Site's Secondary Access Road Residence North of Site Site's Main Access Road Camp Quest Clinton's Main Access Road DeWitt Cemetery Pasture in Rural Kenney 12.5 miles SSE 0.7 miles NE 0.9 miles N 0.7 miles NNE 1.8 miles W 0.7 miles NNE 2.2 miles E 14 miles WSW CL-1 CL-2 CL-8 CL-1 16 B-1

TABLE B-i:

Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Clinton Power Station, 2011 Location Location Description.

Distance & Direction From Site J.

Environmental Dosimetry - TLD Inner Ring CL-1 1.8 miles W CL-5 0.7 miles NNE CL-22 0.6 miles NE CL-23 0.5 miles ENE CL-24 0.5 miles E CL-34 0.8 miles WNW CL-35 0.7 miles NW CL-36 0.6 miles N CL-42 2.8 miles ESE CL-43 2.8 miles SE CL-44 2.3 miles SSE CL-45 2.8 miles S CL-46 2.8 miles SSW CL-47 3.3 miles SW CL-48 2.3 miles WSW CL-63 1.3 miles NNW Outer Ring CL-51 4.4 miles NW CL-52 4.3 miles NNW CL-53 4.3 miles E CL-54 4.6 miles ESE CL-55 4.1 miles SE CL-56 4.1 miles SSE CL-57 4.6 miles S CL-58 4.3 miles SSW CL-60 4.5 miles SW CL-61 4.5 miles WSW CL-76 4.6 miles N CL-77 4.5 miles NNE CL-78 4.8 miles NE CL-79 4.5 miles ENE CL-80 4.1 miles W CL-81 4.5 miles WNW B-2

TABLE B-i:

'Radiological Environmental Monitoring Program - Samplin'g Locations, Distance ancl Direction, Clinton Power Station, 2011 Location Location Description Distance & Direction'!

From Site J.

Environmental Dosimetry - TLD (cont.)

Special Interest CL-37 3.4 miles N CL-41 2.4 miles E CL-49 3.5 miles W CL-64 2.1 miles WNW CL-65 2.6 miles ENE CL-74 1.9 miles W CL-75 0.9 miles N Supplemental CL-2 0.7 miles NNE CL-3 0.7 miles NE CL-4 0.8 miles SW CL-6 0.8 miles WSW CL-7 2.3 miles SE CL-8 2.2 miles E CL-15 0.9 miles N CL-33 11.7 miles SW CL-84 0.6 miles E CL-90 0.4 miles SE CL-91 6.1 miles ENE CL-97 10.3 miles SW CL-99 3.5 miles NNE CL-114 12.5 miles SE Control CL-11 16 miles S B-3

It.

TABLE B-2:

Radiological Environmental Monitoring Program =- Summary of Sample Collection.and Analytical Methods, Clinton Power Station, 2011

Sample Analysis.

Sampling Method.

Analytical.Procedure Number Medium Surface Gamma Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis Water Spectroscopy from a continuous water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Surface Tritium.

Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid Water froi.a continuous scintillation water compositor.

Env. Inc., SPM-1 Sampling Procedure Manual Surface k-131.

Monthly composite TBE, TBE-2012 Radioiodine in various matrices Water from a continuous water compositor.

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

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

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

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

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

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

Env. Inc., SPM-1 Sampling Procedure Manual Fish Gamma Semi-annual samples TBE-2007 Gamma emitting radioisotope analysis Spectroscopy collected via electroshocking or other techniques Env. Inc., SPM-1 Sampling Procedure Manual Air Gross Beta One-week composite TBE, TBE-2008 Gross Alpha and/or gross beta activity in Particulates of continuous air various matrices sampling through glass fiber filter paper Env. Inc., SPM-1 Sampling Procedure Manual Air Gamma Quarterly composite of TBE, TBE-2007 Gamma emitting radioisotope analysis Particulates Spectroscopy each station Env. Inc., SPM-1 Sampling Procedure Manual Air Iodine Gamma One-week composite TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy of continuous air sampling through Env. Inc., SPM-1 Sampling Procedure Manual charcoal filter Milk 1-131 Bi-weekly grab sample TBE, TBE-2012 Radioiodine in various matrices when cows are on pasture. Monthly all other times Env. Inc., SPM-1 Sampling Procedure Manual B-4

TABLE B-2:

'Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Clinton Power Station, 2011 Sample

" Analysis Sampling Method '

Analytical Procedure Number Medium.

Food Gross-Beta Monthly grab June TBE, TBE-2008 Gross Alpha and/or gross beta activity in Products through September vaii6us matrices Env: lnc.,'SPM-1 Sampling Procedure Manual Food Gamma Monthly grab June TBE, TBE-2007 Gamma emitting radioisotopes analysis Products Spectroscopy through September Env. Inc.,SPM-1 Sampling Procedure Manual Grass Gamma*

Biweekly May through' TBE, TBE-2007 Gamma emitting radioisotopes'analysis Spectroscopy October Env. Inc.* SPM-1 Sampling Procedure Manual TLD Thermoluminescence Quarterly TLDs Mirion Technologies Quality Assurance Manual Dosimetry comprised of two Mirion CaF 2 elements.

B-5

Figure B-1 Environmental Sampling Locations Within One Mile of the Clinton Power Station, 2011 B-6

Figure B-2 Environmental Sampling Locations Between One and Two Miles of the Clinton Power Station, 2011 B-7

Figure B-3 Environmental Sampling Locations Between Two and Five Miles from the Clinton Power Station, 2011 B-8

Figure B-4 Environmental Sampling Locations Greater Than Five Miles of the Clinton Power Station, 2011 B-9

Intentionally left blank

APPENDIX C DATA TABLES AND FIGURES -

PRIMARY LABORATORY

Intentionally left blank

TABLE C-1.1 CONCENTRATIONS OF 1-131 IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-90 12/29/10 01/26/11 02/23/11 03/30/11 04/27/11 05/25/11 06/29/11 07/27/11 08/31/11 09/28/11 10/26/11 11/30/11

- 01/26/11

- 02/23/11

- 03/30/11

- 04/27/11

- 05/25/11

- 06/29/11

- 07/27/11

- 08/31/11

- 09/28/11

- 10/26/11

- 11/30/11

- 12/28/11

< 0.7

< 0.3

< 0.6

< 0.9

< 0.7

< 0.8

0.5

< 0.5

< 0.4 (1)

MEAN TABLE C-1.2 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA U

COLLECTION PERIOD 12/29/10 - 03/30/11 03/30/11

- 06/29/11 07/27/11

- 09/28/11 10/26/11

- 12/28/11 CL-90 CL-13 CL-91 CL-99 175 175 189 179 (1)

< 175

< 177

< 194

< 184 177 (1) 175 (1) 191 (1) 176 (1)

< 175 (1)

< 176 (1)

< 186

< 184 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-1

TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE-VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION PERIOD Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134

.Cs-137 Ba-140 La-140 Ce-144 CL-13 01/26/11 - 01/26/11

< 51 02/23/11 - 02/23/11

< 36 03/30/11

- 03/30/11

< 36 04/27/11 - 04/27/11

< 39 05/25/11 - 05/25/11

< 9 06/29/11 - 06/29/11

< 40 07/27/11 - 07/27/11

< 64 08/31/11

- 08/31/11

< 43 09/28/11

- 09/28/11

< 44 10/26/11 - 10126/11

< 66 11/30/11 - 11/30/11

< 47 12/28/11 - 12128/11

< 54

< 106

<.71

<.73

<,86

-<4

< 50

< 153

< 53

< 41

< 121

< 62

< 52

<6

<.12

<4

<..5

<10

<4

<9

<4

4

<10

<,1

<1

<2

<4

<9

<7

<9

<13

<5

<9

<4

<9

<8

<7

< 15

<4

<5

<1.1

<6

<13

<5

<11

<.4

< 8

<4

< 8

<4

<.8

<-1

<,.2

<3

<8

<16

<5

<9

<5

<10

< 7

< 10

<.5

< 12

<6

<12 n.

t'j MEAN

<7

<10

< 5

<-8

<5

<8

<.6

<.8

<1

<2

<5

<9

<8

<12

<5

<8

< 6

<.8

<6

< 11

<6

<8

<6

<11

<4

<7

<5

<8

<5

<7

<10

< 1

<2

<6

<6 9

<8

<11

<4

<7

<5

<8

<5

<8

<5

<13

<-5

<9

<5

<6

-.<28

<8

<42

< -4

<,4

-<29

<.9

<34

< 4

<4

.<.32

.<9

<29

<4

<.29

<10

<31

.1

<-,1

<.13

<4

<6

<4

<26

<10

<39

<6

<7

<33

<11

<48

<4

<5

<25

<9

<31

<-4

<4

<23 A<.7

<43

<6

<8

<32

<11

<51

<.5

<5

<.25

<8

<37

<6

<7

<25

<.9

<40

<4

<5

<19

<:4

.<28

<4

<5

<30

<10

<.33

<3

<-27

<8

<28

<.5

<5

<34

<.12

<44

.<, 1

<1

< 12

< 4

< 7 4

<30

<9<.-"

36

<6

-!<7

<32

<10

<50

<4

<22

<7

<36

<5

<22

<8

<39

<5

<24

<6

<42

<6

<7

<33

<9

<52 CL-90 12/29/10 - 01/26/11

< 35 01/26/11 - 02/23/11

< 43 02/23/11 - 03/30/11

< 32 03/30/11 - 04/27/11

< 50 04/27/11 - 05/25/11

< 11 05/25/11 - 06/29/11

< 40 06/29/11 -1 07/27/11

< 55 07/27/11 - 08/31/11

<-37 08/31/11 - 09/28/11

< 44 09/28/11 - 10/26/11

<41 10/26/11-11/30/11 (1) < 60 11/30/11

- 12/28/11

<.39

< 39

< 98

< 60

< 95

< 33

< 38

< 55

< 82

< 68

<C, 76

< 122

< 30

<4

<.10

<4

<5

<13

<3

<4

<8

<5

<.6

<13

<1

<3

<.4

<4

--J <11

<5

<6

<14

<4

<5

<10

<5

<10

<:5

<5 -

7

<6

<7

<17

<'.6.

6 5

< 11

<4

<9

< 4

< 11

< 4

<.7

<5

< 12

<1

<2

< 4.

<8

<4

<13

< 5

< 7

<6

<10

<5

<11

<7

<14

,-<,6

< 8

<5

<25

<8

< 43 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011

- ý RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION PERIOD Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr795 Cs-134 Cs-137 Ba-140 La-140 Ce-144 CL-91 12/29/10 - 01/26/11

< 54 01/26/11 - 02/23/11

< 52 02/23/11

- 03/30/11 (1) < 43' 03/30/11i-04/27/11 (1) < 35 04/27111

- 05/25/11 (1) < 12 05/25/11

- 06/29/11

< 42 06/29/11

- 07/27/11

< 44 07/27/11

- 08/31/11 (1) < 33 09/07/11

- 09/28/11

< 63 09/28/11-10/26/111 (1) < 55 10/26/11-11/30/11 (1) <62 11/30/11 - 12/28/11

< 50

<58

<5

<6

< 13

<97

<4

<5

< 10

<38

<4

<9 48 44

< 4

<4

< 9

<26

<1

<2

<38

<4

<5

<9

<92

<4

<6

<11

<34

<4

<10

< 138

< 6

< 7

< 12

<49

<8

<6

<12

<.49

<7

< 5

< 12

< 41

< 4.

< 5

< 12

<5

<11

<5

<11

<4

<7

<4

< 7

< 1

<2

<5

<7

<5

<10

<4

<9

<6

<15

<5

<10

<6

<15

<4

< 9

<6.

< 11

<5

<10

<4

<7

< 4

<.7.

<.1.

<.2

<4

<8

<5

<8

<4

<8

<6

<10

<7

<8

< 6

<11

<-5

< 10

<6

<7.

<30

<8

<.5

<5

<.32

<.5

<4

<33

<9.

<3

<4

<27

<.8

<1

<1.

<17

<5.

<4

<34

<9

<4

<5

<23

<5

<4

<5

<18

<5

<.6

<7

<36

<9

<5

<6

<37.

<8

<7

<27

<8

<6.

<5

<26

<7

< 48

< 38

< 29,

26

<.8

38

< 42

< 28

< 51

< 40

< 52

<. 44 MEAN CL-99 12/29/10 - 01/26/11

< 28 02/16/11

- 02/23/11 (1) < 47 03/02/11

- 03/30/11 (1) < 31 04/06/11

- 04/27/11 (1) < 35 04/27/11

- 05/25/11

< 1.1 05/25/11 0-6/29/1-1

< 39 - -

06/29/11

- 07/27/11

< 72 07/27/11 08/31/11

< 44 08/31/11

- 09/28/11

< 44 09/28111

- 10/26/11

< 48 10/26/11 - 11/30/11

< 47 11/30/11 - 12/28/11

< 37.

<29

<3.

<3

<5,

<3

<7,

<4

<6

<35

<5.

<4

<10

<4

<8

<5

<9

<34

<3

<8

<3

<6

<.4

<6

<74

<3

<4

<.9

<3

<7.,

<4

<6

< 8

< 1.

< 1

< 3

<1

< 2

< 1.

< 2.

'< 71

< 5'..

.-k'-

110:......

3-"'

3...

8-.

5 8

<168

<8

<15.

<7

<17

<8

<12

<54

<5

<10

<5

<8

<5

<9

<38

<5

<11

<5

<11

<5

<8

<47'

<6

<13'

<6

<12

<6

<8

<54

<6

<5

<11

<6

<10

<6

<9

< 34-. '.

i <.5,

< 11 *

- -4 "

.< 10'

° "< 5'..

<,3

<.3,

<17

<6-

<5

<6ý

<35.

< 10.

<3.

<ý3

<25-

<88'

<.3

<4

<25

<7

<14

<4

<28.

<9

<99

<31

<14

<5

<24

<8

<5

<6

<19

<7

<6

<35

<13

<5

<24

<7

<4

<5

<21

<9

< 25

< 36

< 25

< 28

<8

'< 37

< 52

< 38

< 42

< 59

< 42

< 33 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-I1.1 CONCENTRATIONS OF GROSS BETA IN DRINKING WATER.SAMPLES COLLECTED IN THE VICINITY-OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-14 12/29/10 - 01/26/11 01/26/11

- 02/23/11 02/23/11 03/30/11 04/27/11 05/25/11

- 03/30/11

- 04/27/11

- 05/25/11

- 06/29/11

< 3.1

< 2.0

3.0

< 2.5

1.7

< 2.4

< 2.5

< 2.3

< 2.2

1.7

< 1.6 (1)

< 1.6 06/29/11

- 07/27/11 07/27/11

- 08/31/11 08/31/11 09/28/11 10/26/11 11/30/11 09/28/11 10/26/11 11/30/11 12/28/11 MEAN TABLE C-11.2 CONCENTRATIONS OF TRITIUM IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION CL-14 PERIOD 12/29/10 - 03/30/11 03/30/11

- 06/29/11 06/29/11

- 09/28/11 09/28/11

- 12/28/11 MEAN

175

< 166

< 187

< 183 (1)

TABLE C-11.3 CONCENTRATIONS OF 1-131 IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-14 07/27/11 08/31/11 09/28/11 10/26/11 11/30/11 08/31/11 09/28/11 10/26/11 11/30/11 12/28/11

< 0.8 (2)

< 0.6

< 0.7

0.5 (1)

< 0.5 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION (2) SEE PROGRAM CHANGES SECTION FOR EXPLANATION C-4

TABLE C-II.4 CONCENTRATIONS OF GAMMA EMITTERS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION PERIOD CL-14 12/29/10 - 01/26/11 01/26/11

- 02/23/11 02/23/11

- 03/30/11 03/30/11

- 04/27/11 04/27/11

- 05/25/11 05/25/11 06129/11 06/29/11 07/27/11 07/27/11 08/31/11 08/31/11 09/28/11 09/28/11 10/26/11 10/26/11 11/30/11 11/30/11

- 12/28/11 Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60.. Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La --140 Ce-144

< 54

< 35

< 38

< 10

< 39

< 54

< 47

< 51

< 41 (1) < 52

< 41

< 49

< 44

< 56

< 30

< 25 179

< 64

< 134

< 105

< 82:

< 63,

< 97

<5

<3

<1

+58

< 4

<6

< 6

<6

<4

<7

< 5

<6

<3

<4

<1

<4

<5

<7

<5

<4

<6

<5 10 11 8

9 2

8 12 14 11 10 11 10

<5

<6

<4

<3

<1

< 4.

<6

<:7

< 6

<5

<6

<4

< 10

<-.12 7

<7

< 2

< 7

<8 12

< 14

<.10

<'i9

< 9

<6

<4

<5

<1

<5

<8

<6

<5

<6

<5

<7

< 10

<7

<2

<8

< 11

< 12

<9

< 10

<8

<11

< 15

13

<13

<9

< 14

< 10

<9

< 10

< 11

<8

<5

<4

<3

<4

<1

<4

<5

<6

<4

<5

<4

<6

<4

<1

<4

<5

<8

<7

<5

<6

<5

< 24

< 38

< 28

< 31

< 13

< 27

24

31

28

< 24

< 26

24

<9.

< 11

< 7-

< 8

< 4,.

<8

< 8

< 12

<7

< 8.

< 12

< 6'

< 42

< 38

< 25

< 31

<7

< 55

< 49

< 41

< 42

< 37

< 52

< 35 MEAN (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-II1.1 CONCENTRATIONS OF TRITIUM IN WELL WATERSAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-12R CL-12T CL-7D 03/30/11

- 03/30/11 06/29/11

- 06/29/11 09/28/11 - 09/28/11 12/28/11

- 12/28/11

< 147

< 177

< 189

< 177

< 145

< 175

"< 187

< 176 149 175 189 181 MEAN C-6

TABLE C-II.2 CONCENTRATIONS OF. GAMMA EMITTERS IN WELL WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION PERIOD CL-12R 03/30/11 06/29/11 09/28/11 12/28/11 Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144 MEAN

-1, CL-12T 03/30/11 06/29/11 09/28/11 12/28/11 MEAN CL-7D 03/30/11 06/29/11 09/28/11 12/28/11

20

< 51

< 38

< 40

< 20

< 45

< 38

50

< 22

< 47

< 30

< 42

< 18

< 38

< 43

< 99 33 +/- 32

< 102

< 68

108

<2

<4

<5

<2

<5

<4

<5

<2

<5

<4

<6

<2

<5

<4

<6

<2

<5

<4

<5

<2

<4

<3

<4

<5

< 11

<9

<11

<5

<9

<14

<5

< 10

<7

< 11

<2

<4

<6

<2

<5

<6

<2

<4

<6

<4

<9

< 10

<4

< 11

<8

< 13

<4

<10

<7

<11

<2

<7

<4

<5

<2

<5

<6

<2

<6

<3

<6

<4

<9

<6

<8

<4

<8

<7

< 12

<4

<8

<5

<8

<2

<5

<4

<5

<2

<4

<6

<2

<4

<3

<5

<2

<5

<6

<2

<5

<4

<6

<2

<5

<4

<6

< 19

< 36

< 17

< 24

< 18.

< 33 18 31 20'.

< 33 S15

< 24

<6 5< 10

< 6

<I6

<7

<9

< 16

< 35

< 33

< 41

<16

<38

< 27

< 36 32 +/- 28

< 37

< 63

90

<7

< 10

<5

< 9

<17

< 38

< 29

<37 MEAN

TABLE C-IV.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Be-7 PERIOD K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144 CL-105 Carp 4120/2011

< 521 Largemouth Bass 4/20/2011

< 457 Crappie 4/20/2011

< 468 Bluegill 4/20/2011

< 641 Carp 10/4/2011

< 622 Largemouth Bass 10(4/2011

< 656 Crappie 10/4/2011

< 714 Bluegill 10/4/2011

< 1010 3190 +/- 792

< 47 2800 +/- 709

< 40 3150 +/- 748

< 44 2840 +/- 794

< 59 3430 +/- 1130 < 90 2360 +/- 1100 < 75 4380 +/- 1220 < 80 2750 +/- 1420 < 98

< 57

< 122

< 45

< 47

< 116

< 45

< 58

< 132

< 51

< 49

< 132

< 45

< 69

< 167

< 66

< 74

< 120

< 74

< 75

< 192

< 91

< 113

< 260

< 105

< 112

< 55

< 95

< 45

< 41

< 621

< 175

< 270

< 97

< 62

< 79

< 44

< 41

< 527

< 162

< 239

< 97

< 60

< 102

< 51

< 48

< 578

< 150

< 259

< 106

< 81

< 104

< 55

< 54

< 861

< 201

< 313

< 156

< 78

< 153

< 86

< 71

< 443

< 145

< 419

< 175

< 79

< 132

< 68

< 59

< 409

< 176

< 350

< 134

< 76

< 116

< 73

< 72

< 530

< 111

< 434

< 201

< 118

< 200

< 118

< 115

< 734

< 214

< 637 c&)

MEAN CL-19 Carp 4/20/2011

< 543 Bluegill 4/20/2011

< 622 Largemouth Bass 4/20/2011

< 492 Channel Catfish 4/20/2011

< 443 Carp 10/4/2011

< 523 Bluegill 10/4/2011

< 970 Largemouth Bass 10/4/2011

< 567 Channel Catfish 10/4/2011

< 647 3113 +/- 1215 2510 +/- 909

< 56

<65

< 144

< 72

< 120

< 69

< 127

< 60

< 64

< 475

< 110

< 297 2650 +/- 940

< 56

< 91

< 126

< 73

< 134

< 76

< 108

< 55

< 59

< 586

< 115

< 367 3420 +/- 780

<46

< 52

< 140

<43

< 119

< 56

< 100

< 50

<48

<470

< 136

< 255 2870 +/- 684

<41

< 57

< 105

<40

< 97

< 47

< 85

< 46

< 39

< 553

< 185

< 246 2630 +/- 996

<48

< 56

< 113

< 56

< 122

< 66

< 127

< 57

< 67

< 404

< 92

< 318 3420 +/- 1210

< 107

< 114

< 227

< 98

< 155

< 107

< 204

< 104

< 105

< 622

< 132

< 652 3260 +/- 1170 <75

<59

<183

<49

<170'

<72

<134

<65

<'417

<92

<400 3440 +/- 1000

< 67

< 74

<191

< 71

<141

< 84

< 131

<68

<79

".<:450

< <74.

< 364, MEAN 3025 +/- 802

TABLE C-V.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/KG DRY +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144 PERIOD CL-7B 4/20/2011

<391 5830 + 686

< 33'

< 47

< 83

< 46

< 102

< 51

< 81

< 36

< 41

< 348 -

< 104

< 214 10/4/2011

< 269 7350 + 794

< 36

< 30

< 104

<'45

< 98

< 37

< 68

< 33

< 32

< 236

< 58

< 183 MEAN 6590 2150

TABLE C-VI.1 CONCENTRATIONS OF'GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER-STATION, 2011 RESULTS IN UNITS OF, E-:3 PCI/CU METER 2 SIGMA COLLECTION GROUP I.

PERIOD CL CL-03" CL-04 CL-06" CL-15i:

CL-94 12/29/10 - 01/05/11 23 +/- 5.

27 +/- 5 27 +/- 5 25 +/- 5 29 +/- 5

' 27 +/- 5 01/05/11

-01/12/11 22 +/-4 24 +/-4 23 +/-4 26 +/- 4 24 +/-4 22 +/ 01/12/11

- 01/19/11 35 +/- 5.

37 +/- 7 (1) 39 +/- 6 40 +/- 6 37 +/- 6 39 +/- 6 01119111

- 01126111 39 +/- 6:

43 +/- 6 41 +/-6

. 35 +/- 6 34 +/- 5 39 +/- 6 01/26/11

-02/03/11 25 +/- 3 24 +/- 3

- 28 +/- 3 23 +/- 3 28 +/- 3 24 +/- 3 02/03/11

- 02/09/11 16 +/- 5 19 +/- 5 14 +/- 5 20 +/- 5.

19 +/- 5, 17 +/- 5 02/09/11

- 02/16/11 25 +/- 5 21 +/- 5 21 +/- 5 21 +/- 5 21 +/- 5 23 +/- 5 02/16/11

- 02/23/11 19 +/- 4.

12 +/- 3 17 +/- 4 18 +/- 4 19 +/- 4 23 +/- 4 02/23/11 -03/02/11 22 +/- 5 23 +/-5 21 +/- 5 26 +/- 5 20 +/-5 24 +/- 5 03/02/11

- 03/09/11 14 +/- 5.

14 +/- 5 18 +/- 5 16 +/- 5 14 +/- 5

-17

+/- 5 03/09/11

- 03/16/11 9 +/- 4 15 +/- 4

-17

+/- 4 15 +/- 4 16 +/- 4 14 +/- 4 03/16/11

- 03/23/11 20 +/- 5 23 +/- 5 24 +/- 5 26 +/- 5 21 +/- 5 22 +/- 5..

03/23/11 -03/30/11 35 +/- 5 36 +/- 5 39 +/- 6 44 +/- 6 35 +/- 5 41 +/ 03(30/11 -04106111 32 +/-5 33 +/-5 36 +/-5 29 +/-5 29 +/-5

.31 +/-5 04/06/11

- 04/13/11 12 +/- 5 18 +/- 5 17 +/- 5 16 +/- 5 21 +/- 5 17 +/- 5 04/13/11

- 04/20/11 14 +/- 4.

14 +/- 4 13 +/- 4 20 +/- 4 16 +/- 4 12 +/- 4 04/20/11

- 04/27/11 12 +/- 5 11 +/- 5 11 +/- 5 9 +/- 5 10 +/- 5 12 +/- 5 04/27/11

- 05/04/11 14 +/- 4, 10 +/- 4 15 +/- 4 8 +/- 4 9 +/- 4

.,15

+/- 4 05/04/11

- 05/11/11 9 +/- 41 12 +/- 4 13 +/- 4 13 +/- 4 13 +/- 4 18 +/- 5 05/11/11

- 05/18/11 10 +/- 4 11 +/- 4 11 +/- 4 11 +/- 4 10 +/- 4, 9 +/- 4 05/18/11

- 05/25/11 16 +/- 4 13 +/ 16 +/- 4 13 +/- 4 13 +/- 4 13 +/- 4 05/25/11

- 06/01/11 11 +/-4 11 +/-4 10 +/-4 12 +/-4.

11 +/-4:

14 +/-4 06/01/11

- 06/08/11 22 +/- 5 25 +/- 5 21 +/- 5 22 +/- 5

.22 +/- 5 24 +/- 5 06/08/11

- 06/15/11 12 +/-4,-,:-

10 +/- 4 9 +/- 4 11 +/- 4 11 +/- 4 9 +/- 4 06/15/11

- 06/22/11 11 +/- 4 9 +/- 4 13 +/- 4 12 +/- 4 12 +/- 4 10 +/- 4 06/22/11

- 06/29/11 12 +/- 4 10 +/- 3 14 +/- 4 (1) 15 +/- 4 (1) 12 +/- 3 13 +/- 4 06/29/11

- 07/06/11 17 +/- 4 21 +/- 5 19 +/- 4 22 +/- 5 19 +/- 5 23 +/- 5 07/06/11

- 07/13/11 19 +/ 24 +/- 5 23 +/- 5

.21 +/- 5 22 +/- 5 22 +/- 5 07/13/11

- 07/20/11 19 +/- 4, 17 +/- 4 21 +/- 4 20 +/- 4 22 +/- 5 21 +/- 5 07/20/11

- 07/27/11 20 +/- 5

,; 24 +/- 5 21 +/- 5 23 +/- 5 24 +/- 5 21 +/- 5 07/27/11 -08/03/11 34 +/-66 32 +/-6 30 +/- 6 31 +/- 6 28 +/-6 26 +/- 6 08/03/11

- 08/10/11 21 +/- 5 19 +/- 4 15 +/- 4 21 +/- 5 22 +/- 5 23 +/- 5 08/10/11

- 08/17/11 19 +/- 4 17 +/- 4 23 +/- 5 21 +/- 4 24 +/- 5 28 +/- 5 08/17/11

-08/24111 22 +/-4 33 +/- 5 28 +/- 5 27 +/- 5 29+/-5

.+/- 32 +/- 5 08/24/11

- 08/31/11 16 +/

,4 18 +/- 4 16 +/- 4 18 +/- 4 18 +/- 4 22 +/- 5 08/31/11 -09/07/11 22 +/- 5 25 +/-5 28 +/- 5 26 +/- 5 23 +/-5 26 +/- 5 09/07/11

- 09/14/11 16 +/- 5 18 +/- 5 18 +/- 5 20 +/- 5 15 +/- 5 21 +/- 5.

09/14/11

- 09/21/11 18 +/- 4 19 +/- 4 20 +/- 5 20 +/- 5 21 +/- 5 20 +/- 4 09/21/11

- 09/28/11 14 +/- 4

,. 17 +/- 4

.16 +/- 4 20 +/- 4 21 +/- 5 21 +/- 5 09/28/11 -10/05/11 23 +/-4

.22 +/-4

.17 +/-4 22 +/-4 26 +/- 5 20 +/-4 10/05/11 -10/12/11 35 +/-6 25 +/- 5 27 +/- 5 43 +/- 6 38 +/-6 37 +/- 6 10/12/11

- 10/19/11 22 +/- 5 24 +/- 5 21 +/- 4 19 +/- 4 21 +/- 4 24 +/- 5 10/19/11

- 10/26/11 23 +/- 5; 27 +/- 5 18 +/- 5 26 +/- 6 22 +/- 5 24 +/- 5 10/26/11

- 11/02/11 19 +/- 5 21 +/- 5 19 +/- 5 24 +/- 5 22 +/- 5 21 +/- 5 11/02/11

- 11/09/11 22 +/- 5.

21 +/- 5 21 +/- 5 21 +/- 5

.21 +/-5 20 +/- 5 11/09/11

- 11/16/11 27 +/- 6 25 +/- 5 22 +/- 5 31 +/- 6 (1) 28 +/- 6 25 +/- 5 11/16/11

- 11/23/11 8 +/- 5 9 +/- 5 11 +/- 5 10 +/- 5 (1) 10 +/-4 4

8 +/- 4 11/23/11

- 11/30/11 13 +/- 4 17 +/- 4 20 +/- 4 15 +/- 4 19 +/- 5 12 +/--4 11/30/11

- 12/07/11 17 +/- 4 20 +/- 5 21 +/- 5 20 +/- 5 18 +/- 4 18 +/- 4 12/07/11

- 12/14/11 28 +/- 5 27 +/-5 28 +/- 5 28 +/- 5 29 +/- 5 30 +/- 5 12/14/11

- 12/21/11 34 +/- 5 37 +/- 5 38 +/- 5 42 +/- 6 37 +/- 5 36 +/- 5 12/21/11

- 12/28/11 18 +/- 4 15 +/- 4 15 +/- 4 19 +/- 4 19 +/- 4 17 +/- 4 MEAN 20 +/- 15 21 +/- 16 21 +/- 15 22 +/- 17 21 +/- 15 22 +/- 16

THE MEAN AND 2 STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-I0

TABLEC.-Vi.1J CONCENTRATIONS OF GROSS BETAAiN AIR PARTICULATE SAMPLES

'COLLECTED INTHE VICINITY OF CLINTON-POWER STATION, 2011 RESULTS IN UNITS OF-E-3 PCI/CU METER,+ +/-2 SIGMA COLLECTION GROUP II I

GROUP III PERIOD CL-01 CL-07,

CL-08 CL-1l z / !

.*U 1,U b 01/05/11

- :01/12/11 01/12/11

-. 01/19/11 01/19/11 2 01/26/11 01/26/11 02/03/11 02/03/11. - 02/09/11 02/09/11:

02/16/11 02/16/11 -. 02/23/11 02/23/11 03/02/11' 03/02/11 -'03/09/11 03/09/11

- 03/16/11 03/16/11

- 03/23/11' 03/23/111 -.03/30/11 03/30/11 -04/06/11 04/06/11

- 04/13/11.

04/13/11

- 04/20/111' 04/20/11

- 04/27/11 04/27/11--

05/04/11 05/04/11

- 05/11/11 05/11/11

-. 05/18/11 05/18/11

-* 05/25/111-05/25/11 06/01/11 06/01/11

- 06/08/11" 06/08/11

- 06/15/11.

06/15/11 06/22/11 06/22/11

- 06/29/11; 06/29/11

- 07/06/11 07/06/11

- 07/13/11 07/13/11

- 07/20/11 07/20/11

- 07/27/11 07/27/11

- 08/03/11 08/03/11. - 08/10/11.

08/10/11

- 08/17/11 08/17/11

- 08/24/11 08/24/11

- 08/31/11 08/31/11

- 09/07/11 09/07/11' - 09/14/11 09/14111

- 09/21/11 09/21/11

- 09/28/11 09/28/11

- 10/05/11 10/05/11' - 10/12/11 10/12/,11

-,10119/11; 10/19/11-. 10/26/11 10/26/11

- 11/02/11 11/02/111-11/09/11 11/09/111-11/16/111 11/16/111 11/23/111 11/23/11. - 11/30/11 11/30/11 -

12/07/11 12/07/11 -'12/14/11 12/14/11

- 12/21/11 12/21/11

- 12/28/11 23 +/- 4.

24

- 34 +/- 5 36 34 +/- 6 34 25 +/- 3 (1) 23 18 +/- 5 16 18 +/- 4 21 16 +/- 4' 15 23 +/- 5 21 16 +/

18 13 +/- 4 14 22+/- 5' 19 40 +/- 6 37 32 +/- 5 35 19 +/- 5 19 14 +/- 4 16 8+4-11 14 4

15 13+/- 4 14 11 4

10 15+/- 4 12 12+ 4 10 23+ 5 25

<5 11 12 4

11 13 4

(1) 13 21 +/-5 19 27 5

'19 19+/- 4 18 24 5

.21 28 6

28 17 4

19 19 4

20 29 5

28 18 +/- 4' 16 28 +/- 5 23 19 +/- 5 15 20 +/- 5 19 21 +/- 4.

15 21 +/-4 23 27+/-5 (1) 35 23 +/-4 18 19 +/- 5 22 22 +/- 5 21 25 +/- 5 17

,26 +/- 6 24 7+4 8

15 +/-4 15

-17 4

17 30 5

29 35 5

29 14 4

14

+/-4

+/-6

+5

+3

+/-5

+5

+4

+/-5

+/-4

+/-5

+6

+5

+4

+/-5

+4

+/-4

+4

+/-5

+/-4

+4

+/-5

+/-4

+4

+/-5

+6

+/-4

+/-5

+4

+5

+/-5

+/-4

+/-5

+4

+/-5

+5

+/-4

+5

+/-5

+4 "23 +/- 4 35 +/- 5 32 +/- 5 (1) 27 4..

.14 +/- 5

'16 +/- 4 16 +/- 4 26 +/-5 18 +/- 5

.14 +/-4 18 +/-5 36 +/- 5 32 +/-5 14+/- 5

ý16 +/- 4 10 +/- 5

.11 4

10+/- 4 10+/- 4 11 +/-4

,.11 4

22 +/- 5 11 +/-4 8+/-4 8*83 19+/-5 23 +/-5 18 +/-4 23 +/- 5 28 +/- 6 20 +/- 4 25 +/- 5 31 +/- 5 194-4 21 +/- 5 13+/-5 17+/-4 20 +/- 5 22 +/- 4 42 +/- 6 23 +/- 4 23 +/-5 117 +/- 5 26 +/- 5 26 +/- 5 8+/-5 16+/-4 17 4

29 +/-5 47 +/-6 19+/-4

.23 +/-4:

39+/-6 33 +/- 6 (1) 334.

13 +/-5 21 +/- 5" 14+/- 4 20+/-5 20-5 13+/-4 21 +/ 47 6,

31 5

' 17+/-5 14+/-4 10+/- 4 10+/-4 11 4,

-- 13+/-4 12+/- 4 12 4

23 +/-5 12+/-4.

15 +/- 4 11 3

23 +/-5.

27+/-5 24+/-5 24 +/- 5 36+/- 6 19 +/- 4',

25 +/-5 32 +/- 5*

21 +/--5 25+/-5

.21

+/-5 18+/ 20 +/-4 30+/- 5 38 6

24 +/-5 23 +/-5 19 4

26+/- 5 21 +/-5

- 11+/- 5 15+/- 4 20 +/-5 26 +/-5 38 +/-6 15+/- 4 MEAN 21 +/- 15 20 +/- 15 21 +/- 17 22 +/- 17

THE MEAN AND 2 STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES

- INDICATES CONTROL LOCATION (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-11

TABLE C-VI.2 MONTHLY AND YEARLY MEAN VALUES OF GROSS BETA CONCENTRATIONS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I -ON-SITE LOCATIONS

GROUP II - INTERMEDIATE DISTANCE LOCATIONS **

GROUP III - CONTROL LOCATIONS ***

COLLECTION PERIOD

MIN MAX MEAN+

2SD COLLECTION PERIOD MIN MAX MEAN+/-

. 2SD COLLECTION PERIOD PERIOD 12I/291U 02/03/11 03/02/11 03/30/11 04/27/11 06/01/11 06/29/11 08/03/11 08/3111 l 09/28/11 11/02/11 11/30/11

- U*2/U3/11

- 03/02/11

- 03/30/11

- 04/27/11

- 06/01/11

-06/29/11

- 08/03/11

- 08/31/11 09/28111

- 11/02/11

- 11/30/11

- 12/28/11 12 9

9 8

9 17 15 14 17 8

15 26 44 36 18 25 34 33 28 43 31 42 au 20 23 18 12 14 23 22 20 24 18 25

-14

+/-7

+ 20 f 17

+5

- 10

+/-9

+ 10

+7

+ 12

+/- 14 1.7 12/29/10 02/03/11 03/02/11 03/30/11 04/27/11 06/01/11

.06/29/11 08/03/11 08/31/11 09/28/11 11/02/11 11/30/11 02/03/11 03/02/11 03/30/11 04/27/11 06/01/11 06/29/11 08/03/11 08/31/11 09/28/11 11/02/11 11/30?11 12/28/11 23 14 13 8

10 8

18 16 13 17 7

14 36 26 40 35 15 25 28 31 28 42 26 47 29 18 22 19 12 14 22 22 19 24 18 25

+10

+7

+/- 19

+/- 18

+/-4

+12

+/-8

+/- 10

+/-8

+/- 13

+/- 15

+/- 20 12/29/10 02/03/11 03/02/11 03/30/11 04/27/11 06/01/11 06/29/11 08/03/11 08/31/11 09/28/11 11/02/11 11/30/11 02/03/11 03/02/11 03/30/11 04/27/11 06/01/1 1 06/29/11 08/03/11 08/31/11 09/28/11 11/02/11 11/30/11 12/28/i11 MIN MAX MEAN+/-

2SD 23 39 31 +/- 12 13 21 17 +/- 8 13 47 25 +/- 30 10 31 18 +/- 19 10 13 12 +/- 2 1i 23 15 +/- 11 23 36 27 +/- 11 19 32 24 +/- 12 18 25 21 +/- 6 19 38 27 +/- 15 11 26 18 +/- 13 15 38 25 +/- 20 12/29/10 12/28/11 8

44 21 f 16 12/29/10 - 12/28/11 7

47 20 +/- 15 12/29/10 - 12/28/11 10 47 22+/- 17

GROUP I LOCATIONS WITHIN 1 MILES OF CPS

- GROUP II LOCATIONS WITHIN 1-5 MILES OF CPS GROUP III LOCATIONS GREATER THAN 5 MILES OF CPS

- - - THE MEAN AND 2 STANDARD DEVATION ARE CALCULATED USING THE POSITIVE VALUES

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS:OFE-3 PCI/CU METER +/- 2 SIGMA SITE

.. COLLECTION PERIOD CL-1 12/29/10 - 03/30 03/30/11 - 06/29 06/29/11

- 09/28 09/28/11

- 12/28

Be-7 K-40 Co-60 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 Ce-144

/11

'11

/11

/11 (1)

(1)

(1) 57 57 68 66

+/- 32

+/- 26

+/- 28

+/- 21

< 51

< 30

< 49

< 45

<3

<2

<3

<4

<3 MEAN 62 +/- 11 CL-11 03/09/11 03/16/11 03/23/11 03/30/11 04/06/11 12/29/10:

03/30/11 06/29/11 09/28/11 MEAN; CL-15 12/29/10 03/30/11 06/29/11 09/28111 03/16/11 03/23/11 03/30/11

- 04106/11

- 04/13111

'03/30/11 06/29/11 09/28/11 12/28/11

< 321

< 270 219 +/- 143

< 292

< 236 64 +/- 28 74 +/- 19 66 +/- 31 86 +/- 23

< 598

< 320

< 322

< 499

< 611

< 60 19 +/- 17

<32

<*57

< 39

<34

< 25

< 33

< 36

<'.4

<2

< 38

< 22

< 23

< 31

< 33

<4

<4 3

<3'

<6

<4

<7

<5

< 73

< 40

< 34

< 53

< 55

<7

<5

<6

<7

<4

<4.

<5

<3

< 42

< 28

< 21

< 30

<5

<3

<4

< 7

<36

<3

< 3

<4

< 7

< 3..'

< 3 24 20 26 21

<3

<2

<4

<3 350 217 230 302 238 29 15 23 33

< 44

< 23

< 28

< 31

< 28

'<4

<2

<3 4

<3

<2

<3

< 42

< 30

< 26

< 39

< 30

< 4

<2

<3

'<4

<3 s'< 3

ýý< 2

< 3

<6

<7

<3

< 45

< 28

< 31

< 37

< 32

< 6

<5 5<

5

< 6

'< 7

<4

< 4

<5

<9

- <5

< 4

< 12

<9

< 14

<8

< 145

< 123

< 94

< 169

<.138

< 16

<8

< 10

< 17

< 11

< '10

<9

< 13

<12

< 13

< 8-

< 10 a

.* 102 +/- 132 03/30/11 06/29/11 09/28/11 12/28/11 77 +/- 25

< 34 61 +/- 23 61 +/- 23 38 +/-27

< 4 24 +/-22

<3

< 9

'<2

< 23

< 3 MEAN CL-2 12/29/10

'- 03/30/11 03/30/11.- 06/29/11 06/29/11. -.09/28111 09/28/11 - 12/28111 MEAN 66+/- 19' 31 +/- 19

c'4

< 4'

<3

<4

< 4 3

<3

< 7'

< 8

<5

< 5 58 +/- 30 81 37

..49 +/-.19..

83 +/- 22 68+/- 34

< 49

< 24

< 38

< 52

<3

<2.

<2

<6

< 7

<5

< 27

< 25

< 14

< 25

30

< 26

.< 15

< 19

< 3

<2

'< 3

<3

< 3

<3

'<3

2

< 3

THE MEAN AND 2. STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION BOLDED VALUES INDICATE ADDITIONAL SAMPLING DUE TO THE FUKUSHIMA EVENT

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Co-60 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 Ce-144 PERIOD CL-3 12/29/10 -03/30/11 (1) 58 +/- 23

< 15

< 2

< 3

< 5

< 4

< 16

< 2

< 3

< 5

< 12 03/30/11 - 06/29/11 57 +/- 31

< 32

< 2

< 4

< 18

< 2

< 5

< 8 06/29/11 -09/28/11 85 +/- 26

< 21

< 3

< 6

< 5

< 27

< 3

< 8

< 15 09/28/11 - 12/28/11 64 +/- 18

< 33

< 2

< 3

< 4

< 2

< 15

< 2

< 3

< 8 MEAN 66 +/- 26 CL-4 12/29/10 -03/30/11 59 +/- 22

< 47

< 3

< 7

< 4

< 27

< 3

< 5

< 12 03/30/11 -06/29/11 (1) 85 +/- 33

< 44

< 3

<4

< 8

< 6

< 28

< 3

< 9

< 13 06/29/11 - 09/28/11 72 +/- 25

< 42

< 3

< 4

< 6

< 4

< 21

< 3

< 5

< 11 09/28/11 -12/28/11 85 +/- 28

< 47

< 2

< 3

< 6

< 4

< 28

< 3

< 4

< 13 MEAN 75 +/- 25 CL-6 12/29/10 -03/30/11 56 +/- 27

< 47

< 3

< 4

< 3

< 21

< 2

< 5

< 12 03/30/11 -06/29/11 (1) 76 +/- 32

< 39

< 3

< 6

< 5

< 22

< 3

< 2

< 7

< 11 06/29/11 -09/28/11 95 +/- 26

< 33

< 3

< 4

< 7

< 5

< 29

< 4

< 2

< 5

< 11 09/28/11 -12/28/11 (1) 62 +/- 25

< 36

< 3

< 5

< 3

< 25

< 3

< 2

< 3

< 8 MEAN 72 +/- 35 CL-7 12/29/10 -03/30/11 (1) 102 +/- 24

<47

< 2

< 3

< 7

<4

< 26

< 3

< 5

< 12 03/30/11 -06/29/11 95 +/- 29

< 21

< 3

< 5

< 8

< 6

< 25

< 3

< 9

< 12 06/29/11

- 09/28/11 58 +/- 25

<53

< 2

< 3

<"5

< 3

< <16

< 2

<2

<5

< 11 09/28/11

- 12/28/11 86 23

<44

<3

<.5

<3

<17

<2

<"3

<8 MEAN 85 39 CL-8 12/29/10 03/30/11 (1) 73 33

< 59

< 4 5

<10

<4

< 28

<4

<3

<6 03/30/11

- 06/29/11 91 +/- 22

< 38

< 2

< 3

< 6

<4

< 17

< 2

< 7

< 10 06/29/11 -09/28/11 65 28

.<38

.< 2

< 3,

<4

< 17

< 3

< 2

< 4

< 11 09/28/11

- 12/28/11 65 +/- 21

< 57

< 3

< 2

< 6

< 3

< 24

< 3

< 4

< 11 MEAN 73 +/-"25 (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA SITE COLLECTION PERIOD CL-94 12/29/10 - 03/30 03/30/11

- 06/29 06/29/11

- 09/28 09/28/11

- 12/28 Be-7 K-40 Co-60 Nb-95 Zr-95 Ru-103 Ru*,106 Cs-134 Cs-.137 Ce-141 Ce-144

/11

'11

/11

/11 58 61 61 82

+/- 21

+/- 22

+/-23

+18

< 37

<6

< 44,

< 28

<2

<3

<2

<-3

<"2

<4

<'6

<4

<3

<4

<'2 19 15 25 17

<2

<.3

<'2

<2

<1

< 2

<1

<5

<11

<6

<9

< 5'

< 3'

<11

< 8 MEAN 65 +/- 22 cmI

TABLE C-VII.1 CONCENTRATIONS. OF 1-131 IN AIR IODINE SAMPLES.,

COLLECTED.IN THE VICINITY OF, CLINTON POWER STATION, 2011 RESULTS IN UNITS OF E,-3 PCI/CU METER +/- 2 SIGMA U

COLLECTION PERIOD 12/29/10 - 01/05/11 01/05/11 - 01/12/11 01/12/11 - 01/19/11 01/19/11 -01/26/11 01/26/11 - 02/03/11 02/03/11 - 02/09/11 02/09/11 - 02/16/11 02/16/11

- 02/23/11 02/23/11

- 03/02/11 03/02/11

- 03/09/11 03/09/11

- 03/16/11 03/16/11

- 03/23/11 03/23/11

- 03/30/11 03/30/11

- 04/06/11 04/06/11

- 04/13/11 04/13/11

- 04/20/11 04/20/11

- 04/27/11 04/27/11

- 05104/11 05/04/11

- 05/11/11 05/11/11

- 05/18/11 05/18/11

- 05/25/11 05/25/11

- 06/01/11 06/01/11

- 06/08/11 06/08/11

- 06/15/11 06/15/11

- 06/22/11 06/22/11

- 06/29/11 06/29/11

- 07/06/11 07/06/11

- 07/13/11 07/13/11

- 07/20/11 07/20/11

- 07/27/11 07/27/11

- 08/03/11 08/03/11

- 08/10/11 08/10/11

- 08/17/11 08/17/11

- 08/24/11 08/24/11

- 08/31/11 08/31/11

- 09/07/11 09/07/11

- 09/14/11 09/14/11

- 09/21/11 09/21/11 - 09/28/11 09/28/11

- 10/05/11 10/05/11 - 10/12/11 10/12/11 - 10/19/11 10/19/11 -10/26/11 10/26/11 - 11/02/11 11/02/11 - 11/09/11 11/09/111 11/16/111 11/16/111 11/23/111 11/23/11 -11/30/11 11/30/11

-12/07/11 12/07/11 - 12/14/11 12/14/11 - 12/21/11 12/21/111 12/28/11

42

< 26

< 23

< 14

< 31

< 51

< 26

< 33

< 46

46

< 36 3

4 4

< 31

< 28

< 67

< 62

< 63

< 42

< 26

< 23

< 40

< 31

< 46

< 50

< 68

< 45

< 37

< 32

< 31

< 44

< 33

< 63

< 37

< 34

< 16

< 53 c

50

50

61

51

24

< 49

51

42

< 59

< 55

< 33

< 39

< 32 CL-2

-CL-3,

< 40

< 34

< 29 (1).

<8

< 31

< 49

< 25

< 33

< 46

< 44 S <36 2 +/- 22 (2) 33 + 22 6 +/- 30 (2) 35 +/-23 8 +/- 29 (2) 102 +/- 22

38

< 32

< 67

< 62

< 41

< 26

< 43

< 42

30

< 46

<17

< 51

< 68

< 45

< 37

< 31

31

< 47

< 33

< 64

< 37

< 34

<16

< 53

< 49

< 48

60

50

< 55

< 45

28

< 41

< 58

< 55

< 33

38

32

-GROUP I

".....1 01-C -4""

< 40

< 34

23 m,, CL6

- CL-15i

- - -CL-94

14

30

27

25

< 33

< 46

< 45

36 (2) 32 (2). 41 (2) 50 29

29

< 64

62

63

< 41

26

42

40

30

46

< 54

50

38

< 44

< 37

30

31

< 47

< 33

63

< 37

< 34

<16

52

50

< 48

60

52

< 55

< 45

50

< 41

31

< 55

< 33

38

32

+/- 21

+/- 27

+/- 26

+/- 23 (2)

(2)

41

< 34

12

14

30

< 49

25

<18

< 45

<44

36

<.41 49 64

28

24

36

< 33

63

< 39

14

42

22

30

25

< 55

22

68

< 45

38

31

31

< 47

< 34

65

16

< 34

<7

22

50

< 49

< 59

52

< 57

< 46

< 54

< 44

58

56

14

38

31

< 42

< 41

< 36

< 16

< 48

< 39

< 34

< 41

< 55

< 51

< 43 37

+/- 21 (2) 69

+/- 24 (2) 58 32

< 29

< 69

< 60

< 64

< 65

< 38

< 53

< 63

< 41

< 45

< 40

< 42

< 66

< 47

< 33

< 48

< 39

< 51

< 38

< 63

< 33

< 36

< 24

< 51

<64

< 58

< 64

< 51 (1)

< 32 (1)

< 55

< 57

< 45

< 27

< 31

< 29

< 42

<.16

< 51

<40

< 35

< 42

< 55

< 53

< 43

+/- 22 (2) 46..+/- 30

+/-28 (2) 52 +/- 24

+/-24 (2) 85 +/- 27

+/- 25ý (2) < 40

< 33

< 30

< 59

< 66

< 65

<16

< 53

< 28

< 23

< 20

< 41

<23

< 66

<48

< 32

< 50

< 39

< 23

< 39.

< 63,

< 32

< 35

< 55

< 27

< 58

<-60,

<64

< 62

< 49

< 17.

< 56

< 55

< 45

28

< 30

28 (2)

(2),

(2)

MEAN 42 +/- 18 57 +/- 79 36 +/- 19 57 +/- 22 45 +/- 35 61 +/- 41

THE MEAN AND 2 STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION (2) SEE

SUMMARY

AND-CONCLUSIONS SECTION REGARDING THE FUKUSHIMA EVENT C-16

TABLE C-VII.1 CONCENTRATIONS OýF -131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 COLLECTION PERIOD.,.

12/29/10.-- 01/05/11 01/05/11

- 01/12/11 01/12/11

- 01/19/11 01/19/11 -01/26/11 01/26/11 - 02/03/11 02/03/11 - 02/09/11 02/09/11 - 02/16/11 02/16/11 - 02/23/1'1 02/23/11 - 03/02/11 03/02/11 - 03/09/11 03/09/11 - 03/16/11 03/16/11

- 03/23/11 03/23/11-03/30/11 03/30/11 '- 04/06/11 04/06/11

- 04/13/11 04/13/11

- 04/20/11 04/20/11

- 04/27/11 04/27/11

- 05/04/11 05/04/11

- 05/11/11 05/11/11

- 05/18/11 05/18/11

- 05/25/11 05/25/11

- 06/01/11 06/01/11

- 06/08/11 06/08/11

- 06/15/11 06/15/11

- 06/22/11 06/22/11

- 06/29/11 06/29/11

- 07/06/11 07/06/11

- 07/13/11 07/13/11

- 07/20/11 07/20/11

- 07/27/11 07/27/11

- 08/03/11 08/03/11

- 08/10/11 08/10/11

- 08/17/11 08/17/11

- 08/24/11 08/24/11

- 08/31/11 08/31/11

- 09/07/11 09/07/11

- 09/14/11 09/14/11

- 09/21/11 09/21/11

- 09/28/11 09/28/11

- 10/05/11 10/05/11

- 10/12/11 10/12/11

- 10/19/11 10/19/11 -10/26/11 10/26/11

- 11/02/11 11/02/11

- 11/09/11 11/09/11 11/16/11 11/16/11

- 11/23/11 11/23/11

- 11/30/11 11/30/11

- 12/07/11 12/07/11

- 12/14/11 12/14/11

- 12/21/11 12/21/11

- 12/28/11 RESULTSzIN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP II I GROUP III CL-01.

CL-07 CL-08.

CL-1l1**:,..

25

< 35

22

14

18 (1i

< 50

14

< 33

< 25

25

20

38 "72 +/- 20 92 + 34

< 39

31

65

64

< 27

23

26

< 43

< 40

32

< 45

< 53 (1)

< 50

69

25

< 37

<17

26

19

< 34

38

18

<17

< 50

26

28 (1)

24

21

< 55

25

32

23

< 57

31

< 33

16

<18

.< 23

< 18

< 37

<6

< 23

< 24

< 14

< 19

< 23

< 22

< 18 55 (2) 42 4(2) 62 1< 40

< 32

< 69

< 25

< 36

< 28

< 47

< 23

< 63

< 41

< 45

< 28

< 43

< 29

< 20

< 14

< 21

< 17

< 52

< 39

< 28

< 34

< 21

< 53

< 50

< 65

< 25

< 26

< 27

< 34

< 22

< 50

< 24

< 25

< 12

< 17

< 29 42,.,:

< 41

< 37

< 15 (1)

< 53 (1)

< 39

< 33

< 42

< 53

< 50

< 43

+/-20 (2) 34 +/-

+/-25 (2) 75 +/-

+20 (2). 73 +/-

< 27

< 24

< 69

< 60

< 66

< 65

< 47

< 53

< 66

< 41

< 45

< 40

< 43

< 66

< 48

< 33

< 49

< 39

< 51

< 16

< 63

< 33

< 35

< 55

< 49

< 65

< 58

< 59

< 64

< 63

< 50

< 30

< 57

< 56

< 45

< 27

< 32

< 12 19 (2) 29 (2) 21 (2);

' 42

< 41

<36

< 16.

48

< 39

< 33

41

< 55

< 51

< 43

36 78 +/- 20'(2)

ý90 +/- 22 (2)

32

< 23

67

58

65

64

38

< 54

63

41

< 45

40

< 43

66

< 47

31

< 47

38

< 51

< 37

< 62

<18

< 34

< 54

< 48

< 66

58

< 59

66

61

< 50

31

<54

< 54

< 45

28

31

28 MEAN 82 +/- 29 53 +/- 20 61 +/- 46 84 +/- 18

THE MEAN AND 2 STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES

- INDICATES CONTROL LOCATION (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION (2) SEE

SUMMARY

AND CONCLUSIONS SECTION REGARDING THE FUKUSHIMA EVENT C-17

TABLE C-VIII.1 CONCENTRATIONS OF 1-131 IN MILK SAMPLES-COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER 2 SIGMA-COLLECTION PERIOD 01/26/11 02/23/11 03/30/11 04/13/11 04/27/11 05/04/11 05/18/11 06/01/11 06/15/11 06/29/11 07/13/11 07/27/11 08/10/11 08/24/11 09/07/11 09/21/11 10/05/11 10/19/11 11/02/11 11/30/11 12/28/11 CONTROL FARM CL-116,:

k

< 0.8

< 0.2 2.8,++/- 0.6

< 0.8

< 0.5

< 0.7

< 0.6

< 0.8

< 0.7

< 1.0

< 0.8

< 0.9

< 0.6

< 0.7

< 0.9

< 0.7

< 0.9

< 0.7

< 0.4 (1)

MEAN (1) SEE

SUMMARY

AND CONCLUSIONS SECTION REGARIDNG FUKUSHIMA EVENT C-18

TABLE C-VIII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 Ce-144 PERIOD CL-116 01/26/11

< 44 02/23/11

< 56 03/30/11

< 50 04/13/11

< 21 04/27/11

< 55 05/04/11

< 42 05/18/11

< 48 06/01/11

< 52 06/15/11

< 68 06/29/11

< 50 07/13/11

< 61 07/27/11

< 49 08/10/11

< 57 08/24/11

< 48 09/07/11

< 60 09/21/11

< 61 10/05/11

< 49 10/19/11

< 67 11/02/11

< 60 11/30/11

< 58 12/28/11

< 57 1350 +/- 116

<4

< 5 1320 +/- 132 -< 6

< 6 1170 +/- 122

< 5

<6 1350 +/- 56

< 2

< 2 1170 +/- 132

< 5

< 6 1160 +/- 119

< 5

< 6 1180 +/- 138

< 5

< 6 1070 +/- 143

< 5

< 5 1180 +/- 132

< 5

< 6 1290 +/- 135

< 7.

< 7 1130 +/- 186

< 7

< 6 1340 +/- 157

< 6

< 7 1350 +/- 157

< 6

< 6 1270 +/- 160

<6

< 7 1400 +/- 193

<6

< 7 1230 +/- 183

< 9

< 7 1110 +/- 154

< 7

< 6 1130 +/- 186

< 8

< 11 1390 +/- 188

< 8

< 7 1250 +/- 197

<6

< 8 1250 +/- 168

< 5

< 6

<11

<7

<15

<7

<12

<7

<6

<3

<15

<6

<12

<6

<15

<7

<15

<7

<13

<7

<15

<6

<19

<7

<16

<8

<14

<8

<16

<7

<16

<9

< 17

< 13

<14

<7

< 19

< 12

<19

<9

< 17

< 10

< 16

< 10

< 11

< 12

< 11

<5

< 15

< 11

< 12

< 13

< 14

< 13

< 14

< 15

< 16

< 19

< 18

< 15

< 17

< 19

< 17

-<14

<5

<8

<6

<3

<7

<5

<6

<5

<8

<7

<8

<9

<6

<8

<9

< 10

<6

< 10

< 12

< 10

<5

< 12

<9

<8

<9

< 10

< 12

<9

< 10

< 11

< 15

< 12

< 11

< 13

< 14

< 12

<4

<5

<2

<5

<4

<5

<6

<5

<7

<6

<7

<5

<6

<7

<4

<8

<6

<7

<.5

< 6

< 26

< 7

< 33

<6

<42

<10

". <45

< 5

< 52

< 13

"<37

< 3

< 15

< 5

< 16

< 6

< 48

< 12

<40

< 5

< 29

<8

< 34

< 6

< 35

< 10

<46

< 5

< 47

< 14

<42

< 6

< 53

<13

<49

< 7

< 42

<-14

<40

<7

<39

<14

<58

< 6

< 30

<.8

<45

< 8

< 30

< 8

< 51

< 7

< 31

<-9

. 43

< 8

< 32

<'.9

< 46

< 9

<44

<7

<63

<.6-

< 25

< 11

< 34

<11

.<45:,'

<13

<62

< 8

< 32ý:-

< 9

< 50

<8

< 31-

<.13

<49

<6 24

<.6

< 44 MEAN 1242 +/- 199

TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/KG WET + 2 SIGMA SITE COLLECTION Be-7 PERIOD K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144 CL-1 14 Cabbage Lettuce Swiss Chard

-Cabbage Lettuce ' :

Swiss Chard Cabbage Spinach Swiss Chard Cabbage Spinach Swiss Chard 06/29/11 06/29/11 06/29/11 07/27/11 07/27/11 07/27/11 08/31/11 08/31/11 08/31/11 09/28/11 09/28/11 09/28/11 MEAN 243 +/- 134 391 +/- 136 430 +/- 165

< 167 320+/- 149 318 +/- 163 280 +/- 145 194 +/- '136 325 +/- 141 382 +/-142 688 +/- 198 "675 +/- 187 4570 +/- 346

< 13 4250 +/- 396

<'17 7990 +/-510

< 17 3280 +/- 443

< 20 4970 '+/- 504

< 19

-7610 +/- 576

<17 3930 +/- 392

< 17 9970 +/--866

< 24 7860 +/-625

< 17 3500 +/- 503

<20 8010 +/--601

< 19 6100 +/- 617

< 18

< 14

<19

< 19

< 16

<'21

< 23

< 18

< 25

< 19

< 18

< 19

< 20

< 28

<'42

'< 51

<*47

< 39

< 44

< 37

<' 63

<*45

< 51

< 50

< 59 386 +/- 321 6003 +/- 4428

< 16

< 23

< 22

< 18

'< 23

< 29

< 16

< 44

< 28

< 27

< 31

< 24

< 20

< 18

< 25

<-29

< 33

< 28

< 24

< 33

< 24

<5

< 18

< 37

< 12

< 27

< 38

< 19

'< 31

< 38

< 20

< 30

<-42

< 19

< 32

< 47

< 19

< 34

< 51

< 20

<32

<'37

'< 15

< 25

'< 69

<28

< 50

<"48

< 17

< 27

< 45

< 20

< 40

< 57

<20

< 38

<41

<22

< 28

< 41

< 57

< 54

<* 33

< 30

< 32

< 33

< 45

' 33

< 49 54

< 42

<11

< '17 15

<'17

< 19

<"21

< 15

<20

< 17

<17

< 17

16

< 14

< 17

<'18

< 18

< 21

< 22

< 18

< 24

< 19

< '18

< '1"9

< 19

< 88

< 28

< 101

<133

< 35

< 117

< 124

< 25

< 121

< 87

< 20

< 115

<82

< 18

< 134

< 88

< 25

< 123

< 81

<19

< 105

< 140

< 22

< 128

< 83

< 27

< 96

< 128

< 36

< 114

< 121

< 27

< 140

< 126

< 29

< 108 t'J 0CL-115 Cabbage Com Leaves Lettuce Cabbage Lettuce Com Leaves Cabbage Com Leaves Tree Leaves Cabbage Com Leaves Tree Leaves 06/29/11 751 +/- 214 06/29/11 (1) 621 +/- 262 06/29/11 433 +/- 200 07/27/11 208 +/- 143 07/27/11

'270 +/- 224 07/27/11 (1) 1580 +/- 366 08/31/11

< 170 08/31/11 (1) 1730 +/- 355 08/31/11 (1) 1470 +/- 284 09/28/11 1320 +/- 228 09/28/11 (1) 3070 +/- 154 09/28/11 (1) 335 +/- 185 MEAN 1072 +/- 1738 4870 +/- 489

< 17 3730 +/- 440

< 17 3760 +/- 338

< 16 2690 +/- 428

< 17 3460 +/-530

< 30 3860 +/- 518

< 26 3740 +/- 462

< 20 2250 +/- 509

< 29 4900 +/--608

< 26 1620 +/- 338

< 16 2670 +/- 185

< 4 2440 +/- 333

< 17

< 19

< 16

< 17

< 27

< 28

< 21

< 26

< 22

< 19

< 4

< "16

< 44

<*42

< 45

< 57

< 60

< 36

< 51

< 57

< 42

<9

< 39

< 43

< 19

<.26

< 36

< 18

"<30

< 34

< 17

< 27

<"50

< 22

"< 34

< 52

< 37

< 51

< 59

< 33

<'47

< 44

< 21

< 32

< 39

<.28

< 40

< 56

< 26

< 45

< 35

< 18

< 39

<9

<4

<7

< 33

<20

< 30

< 52

< 59

< 35

< 54

< 50

< 37

< 49

< 55

< 58

< 16

<*55

< 17

<'18

< 16

< 17

< 31

< 25

< 19

< 24

< -22

< 20

<4

< 15

< 24

< 17

< 18

< 21

< 27

< 26

< 20

< 28

< 27

< 22

<4

< 17

< 126

<36

< 129

<'128

< 38

<122

< 1*18

< 32

< 114

< 99

< 28

< 117

<136

< 34

< 201

<131

< A1

< 193

< 94

< 27

< 121

< 150

< 29

< 182

< 123

<.35

< 179

< 123

<38

< 117

< 29

< 10

< 26

< 124

<'28

< 115

3333 +/- 2034

THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144 PERIOD CL-117 Cabbage Lettuce Swiss Chard Cabbage Lettuce Swiss Chard Cabbage Lettuce Swiss Chard Cabbage Spinach Swiss Chard 06/29/11 06/29/11 06/29/11 07/27/11 07/27/11 07/27/11 08/31/11 08/31/11 08/31/11 09/28/11 09/28/11 09/28/11 338 +/- 251 418 +/- 180 249 +/- 117 217* +/- 116 350 +/- 180 214 +/-- 170 170 +/- 158 818 +/- 82

< 198 310 +/- 181 492 +/- 196 277 +/- 137 2760 +/- 402

< 20 4280 +/- 414

< 16 4140 +/- 358

< 13 3500 +/- 378

< 15 5650 +/- 551

< 25 7730 +/- 586

< 19 2890 +/- 373

< 19 11306 +/- 268

< 9 6930 +/- 618

< 18 4050 +/- 394

< 17 6760 +/- 381

< 16 5550 +/- 490

< 15

< 19

< 17

17

< 12

< 22

23

17

<.9

< 20

13

20

20

< 46

< 25

< 53

< 43

< 23

< 32

< 33

< 17

< 33

< 28

< 19

< 39

< 50

< 29

< 53

< 29

< 41

< 31

< 17

< 31

<"22

< 12

< 22

< 38

< 23

< 43

< 46

< 20

< 40

< 46

<'21

< 47

46

< 22

< 39

< 23

< 18

< 15

25

22

17

10

< 15

18

< 19

< 17'

< 31

< 50

< 18

< 129

< 27

< 48

< 12

< 17

< 115

< 27

< 45

< 14

< 12

< 97

< 28

< 26

< 13

< 75

< 42

< 36

< 23

< 22.

< 107

< 38

<32

<18

< 18,

< 87

< 24

< 35

< 14

< 17

< 84

< 15

< 18

< 8'

< 9

<47

< 34

< 33

< 14

< 16

< 91

< 28

< 49

< 14.

< 15

< 102

< 32

< 60

< 18

< 123

< 29

< 50

< 15

< 119

< 39

< 37

< 22

21

< 31

20

28

< 11

< 21

< 19

31

32

123

104

< 84

96

152

140

106

< 59

81

93

138

< 106 MEAN 350 +/- 363 5462 +/- 4899 CL-118 Cabbage 06/29/11 233 +/- 170 Lettuce 06/29/11 466 +/- 163 Spinach 06/29/11 1160 +/- 179 Cabbage 07/27/I1 391 +/- 272 Lettuce 07/27/11-

< 225 Spinach/Maple Leaves 07/27/11 (1) 1460 +/- 392 Cabbage 08/31/11 233 +/- 149 Lettuce 08/31/11 614 +/- 146 Tree leaves/Spinach 08/31/11 (1) 1510 +/- 112 Cabbage 09/28/11 290 +/- 142 Swiss Chard/Tree Leaves 09/28/11 (1) 2370 +/- 200 Tree Leaves 09/28/11- (1) 2140 +/- 247 4610 +/- 373

< 15 5720 +/-k460

< 15 13800 +/- 510

< 21 7120 +/- 647,

< 31 6230 +/- 578* < 22 4610- -594'

32 6380 +/- 468

< 21 8280"+/- 346

< 14 4510 +/- 209

<8 4840 +/- 438

< 18 6810 +/- 383

< 15 2470 +/- 297

< 17"

< 18

< 38

< 19

< 37

17

<50

< 23

< 40

< 22

< 54

< 26

< 50

<*27-

<49

< 30

< 56

< 23

< 48'

< 32'

<" 51

< 31

<"62

< 42

< 77

< 21

< 44

< 26

< 47

< 15

< 33

< 17

< 33

< 9

< 19

<'10'

< 18

19,

< 46'

<'23

< 45

< 18

< 37

< 17'

< 35

19

<'43-

< 17

< 34

< 16

<'23

< 23

27

25

45

22

< 16

<9,

< 19

< 18

19

< 32

< 55

< 15

< 17

< 128

< 30

< 59

< 14

<'18'

< 115

< 39

< 53 18

< 21'

< 136

51

< 42

< 25

< 28

< 121

< 40

<37

<'22

< 25

< 120

< 58

<56

<'34

<"32

<'165

<36

< 54

<18

< 20

<131

< 28

< 32

< 14

< 17

< 82

< 16

< 18

< 8

< 9'

< 48

< 34

< 40'

< 15'

< 17'

<110

< 29

< 56

< 16

<'17

< 105

<31

< 57

< 16'

<'18

<"131

20

35

< 39

< 34

< 33

< 45

31

21

12

< 27

<'31

28

< 113

108

109

< 181

142

244

136

97

56

114

107

104 MEAN..

988,+/- 1569.6282+/--+/-5630

THE MEAN AND TWO STANDARD DEVIATION ARE CALCULATED USING THE POSITIVE VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-IX.2 CONCENTRATIONS OF GAMMA EMITTERS IN GRASS SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/KG WET +/-2 SIGMA SITE COLLECTION Be-7 K-40.

Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144 PERIOD CL-01 05/04/11 05/18/11 06/01/11 06/15/11 06i29/11 07/13/11 07/27/11 08/10/11 08/24/11 09/07/11 09/21/11 10/05/li

.10/19/11 MEAN CL-02 05/04/11 05/18/11 06/01/11 06/15/11 06/29/11 07/13/11 07/27/11 08/10/11 08/24/11 09/07/11 09/21/11 10/05/11 10/19/11 1U42 1995 1479 1686 2569 2358 3283 2981 1023 380 1371 1432 990 93 98 73 182 196 361 436 377 210 49 252 258 172 5305 5129 4810 4675 5313 4877 5825 5016 4963 4565 5739 4679 3796

+/- 189

+/- 137

+/- 133

+/- 327

+/- 353

+/- 691

+/- 713

+/- 572

+/- 476

+/- 163

+/- 536

+/- 542

+/-.325

<4

<5

< 14

< 16

< 29

<'29

< 25

< 18

<6

< 17

< 22

< 14

<5

<4

<'6

< 15

< 17

< 40

< 37

<.31

< 18

<5

< 20

< 14

< 13

< 10

14

< 36

< 37

< 86

< 67

< 58

< 36

< 14

< 47

-< 37

< 35

<5

<4

<.6

< 15

17

< 34

< 35

< 30

< 22

<6

< 25

<.20

< 16

< 10

< 8

< 12

29

< 32

< 93

<' 58

<61

< 35

< 14

< 44

< 51

-< 34

<6

<'5

<6

< 15

< 19

< 34

< 38

-< 36

< 20

<5

< 23

.< 25

< 17

<9

< 7

< 10

< 27

29

< 55

< 61

< 46

< 29

10

< 30

41

< 29

<.50

< 43

< 40

< 46

< 57

< 45

< 56

<-57

< 29

<8

< 33

<.37

<* 36

<4

< 3

<'5

< 1.3

< 16

< 29

'<,26

< 16

<5

< 18

'< 19

< 14

<5

"<.3

<5.

< 13

< "i5

< 33

< 39

' 26

< 16

<6

< 19

< 23

<:14

72

< 56

< 61.

< 102

< 122

< 150

<'137

<:153

< 83

< 25

< 86

< 105

<'86 1738 +/-1710 4976 +/- 1053

< 16

< 14

.< 16

< 20

< 30

< 50

< 30

< 33

< 25

<7

< 24

-<15

< 19

< 16

<'20

< 23

< 20

< 22

< 28

< 10

< 47

< 52

< 34

< 29

< 27

< 38

< 94

< 101

< 193

< 224

< 199

< 116

< 33

< 127

< 124

< 100

.1591 +/-

596 +/-

1843 +/-

930 +/-

1292 +/-

1175 +/-

398 +/-

243 +/-

646 -s 656 +/-

781 +/-

1465+/-

1394 +/-

129 71 85 164 209 202 204 185 214-77 225 421 330 5567 5398 5820 5035 5379 6069 4511 5500

-- 3903 7024 3424 4344 5132

+/- 228

+/- 178

+/- 163

+/- 335

+/- 439

+/- 527

+/- 611

+/-434

+/-.520

+/- 220

+/- 521

+/- 739

+/- 525

<5

<4

<6

< 11

< 17

< 16

<28

<,15

'<27

<9 30

< 28 19 5

5 7

14 17 17 28 16 22 8

28 32 20

.< 12

.< 13

17

< 29

< 48

< 40

< 49

< 31

< 55

< 18 62 77 46

<'5

<6

'<7

< 17

< 22

< 23

< 32

< 18

"<'21

<.10

< 35

< 38

< 26

<9

< 14

< 30

< 34

< 42

<. 59

< 34

< 49.

< 19

< 64

< 86

< 45

<5

<7

< 13

< 20

< 28

< 19

< 27"'

<9

< 24

< 38

< 23

<8

< 12

< 24

< 30

< 31

.< 40

< 27

< '43

< 15

< 46

< 61

< 40

<' 50

< 41

< 45

<.41

< 52

< 30

<.41

< 30

< 45-

< 13

< 53

< 58

< 56

<4

<-3

<..5

<'11

<,15

< 15

<24

.<, 14

< 21'

<8

< 27

< 37

< 18

<4

<'4

<.6

<.13

<,17

< 20

<-24

< 15

< 21

<9

< 33

< 36

< 18 I< 61

< 65

<'67

<.100

.<,121

< 86

< 107

< 80 "118

< 39

< 142

< 160 148

< 32

< 21

< 40

< 88

< 98

< 121

.< 149

<. 101 174 54.

< 181

< 236 130 MEAN 1061 goo M15162

+/- 1899

TABLE C-IX.2 CONCENTRATIONS OF GAMMA EMITTERS IN GRASS SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/KG.WET +/- 2 SIGMA SITE COLLECTION PERIOD Be-7 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 1-131 Cs-134 Cs-137 Ba-140 La-140 Ce-144 C-)

CL-08 05/04/11 05/18/11 06/01/11 06/15/11 06/29il 1 07/13/11.

07/27/11 08/10/11 08/24/11 09/07/11 09/21/11 10/05/11 10/19/11 MEAN CL-116 05/04/11 05/18/11 06/01/11 06/15/11 06/29/11 07/13/11 07/27/11 08/10/11.

08/24/1 i 09/07/11 09/21/11 10/05/11 10/19/11 995 1085 716 2183 2064 1710 2611.

1895 1393 561 1471 15ý07 1360

+/- 93

+/- 9.5.

+/- 111

+/- 233

+/- 257

+/- 362

+/- 522

+/- 357

+/- 203

+/- 62

+/- 207

+/- 355

+/- 255 15.04 +/- 1180 2321 +/- 179' 1503 +/--94.

1229 +/- 137 2391 +/- 222 3001 +/- 227 1556 +/- 247 1612 +/- 263 1276 +/--,198 -

1455 +/- 333 1275 +/- 101 1440 +/- 330 2271 +/- 402 1855 +/- 256 5125 +/- 168 5372 +/- 162 5790 +/- 251 5750 +/- 412 6236 +/- 491 5964 +/- 744 6102 +/- 909 7539 +/-675:

5757 +/- 504 7898.+/- 182 5782 +/- 442 6768 +/- 795.

3586 +/- 452 5975 +/- 2146 6157 +/- 266-5348 +/-165 3728 +/- 235 4271,+/- 385 4709 +/-346 4675+/- 514 5337 +/-519 5562,+/- 412 5983 +/- 758 7027 +/- 243 5532 +/- 703 6547 +/- 638 4506 +/- 423

<4

<.3

< 7

< 15

< 16

< 22

< 50

< 26

< 21

<6

< 18

< 27

<-19

<4

<8

< 19

< 17

< 29

< 50

< 28

< 22

<6

< 16

< 21

< 21:

< 12

< 10

< 20

< 43

< 37,

< 50

< 113

< 65.

< 50

< 15

< 43

< 65

< 46

<5

<.4

< 8

< 21

< 23

< 29

<54

<*34

< 28

<8

< 21

< 40

< 22'

<9

< 8.

< 16

< 37

< 38

< 66,

< 92

< 74

< 53

< 15

< 33

<-61

< 42

<5

<5'

<9

< 19

< 18

< 23

< 46

< 29

< 27

<7

< 19

< 25

< 23

<8

<.8

< 16

< 31

< 32

<-49

< 92

< 49

< 40

< 11

< 31

< 59-

< 34

< 47

< 43

< 47

< 52

< 59

< 55

< 59,

< 55

< 35

<11

< 31

< 43.

< 57

<4-

<-3

<.7

< 16

< 17.

< 28

<44

< 27

< 21

<6

< 16

< 27'

< 17'

<.4

<4

< 7.

< 18

< 18'

< 28

< 52

< 24

<6

< 16

< 19

< 22

< 63..

< 56

< 74.

<.126

< 125

<-122

< 220

< 137

< 106

< 29

< 92

< 115

< 1477

< 75'

< 62

< 74.

<.118.

< 108

< 99

< 90

< 83

< 165

< 41

< 150

< 145

< 136

<.16

< 13

< 19

< 34,

< 28.

< 31

<*69

< 36

< 29

< 8-

< 17

< 28

< 31

< 25

< 23

< 48

< 112

< 1.16

< :204

< 262

< 182

< 134

< 42

< 109

< 149

< 118

< 5*

<-4

<7

< 15

< 21

< 29

<8

< 30

< 32

<.19 6"

4 9

14 16 21 20

-16 29 8

31 34 16

< 14'

< 10

< 22

< 36

< 37

< 55

< 46

<-34

< 74

< 20

< 76

< 78

< 44

<6

<4

< 8

< 19

< 15

< 31

< 26

-<19'

< 38

< 11

< 42

< 36

< 22

< 12

< 8

< 15

< 29

< 32

< 60

< 55

< 35 -

< 88

< 20

< 52

< 67

<.41

<6

<4

<8

< 18

< 21

< 23

< '19-

< 36

<9

< 36

< 34

< 26

< 11"

<7'

< "14

< 32

< 30.

< 37

< 38

<-29

< 60

< 15

< 52

< 55

< 35

<-55

< 44

< 48

< 54

< 55

< 31

< 36 32

< 46

< 14

< 59

< 55

< 57 4

3-7.

13 19 18 14'--'

31 8

32 34 19

<ý5

<4

<-7

< 17

<-13

<*24

< 21

< 16

< 29

<8

< 27

<*34

< 19

<21

< 14

< 19

< 20

< 24

< 20

< 23

< 10

< 49

< 39

< 38

< 30'

< 22

< 49.

< 108

< 101

< 139

< 127

< 117

< 209

< 53

< 183

< 255

< 147 MEAN 1783;+/- 1094 5337 +/- 1893

TABLE C-X.1 QUARTERLY.TLD RESULTS FOR CLINTONPOWER STATION, 2011.

RESULTS.IN UNITS OF MILLI-ROENTGEN/QUARTER 2 STANDARD DEVIATIONS STATION CODE CL CL-02 CL-03 CL-04 CL-05 CL-06 CL-07 CL-08 CL-11 CL-15 CL-22 CL-23 CL-24 CL-33 CL-34 CL-35 CL-36 CL-37 CL-41 CL-42 CL-43 CL-44 CL-45 CL-46 CL-47 CL-48 CL-49 CL-51 CL-52 CL-53 CL-54 CL-55 CL-56 CL-57 CL-58 CL-60 CL-61 CL-63 CL-64 CL-65 CL-74 CL-75 CL-76 CL-77 CL-78 CL-79 CL-80 CL-81 CL-84 CL-90 CL-91 CL-97 CL-99 CL-1 14 MEAN

+/- 2 S.D.

18.8 +/- 1.21, 19.1 +/- 2.4 19.2 +/- 1.9 18.6 +/- 1.5 19.3 +/- 4.3 16.7 +/- 3.1 18.0 +/- 2.1 18.2 +/- 2.6 17.8 +/- 2.3

' '17.1+/- 1.3, 19.3 + 2.4 19.6 + 1.4 20.0 +/- 2.3 19:4 +/--2.4 19.7 +/- 2.8 18.4 +/- 2.2 19.1 +/- 2.2 18.3 +/- 3.0 20.0 +/- 1.8 19.0 +/- 1.7 19.9 +/- 2.1 19.1 +/- 2.5 19.8 +/- 4.0 16.7 +/- 2.3

.19.5 +/- 3.9 18.6 +/- 2.2 19.8 +/- 4.0 19.7 +/- 2.3 19.2 +/- 2.1 18.8 +/- 2.3 18.9 +/- 3.7 19.5 +/- 2.1 19.6 +/- 3.2 20.0 +/- 3.2 19.8 +/- 2.6 20.1 +/- 3.5 19.2 +/- 2.4 17.8 +/- 1.3 18.9 +/- 2.5 19.7 +/- 2.3 17.5 +/- 2.7 18.9 +/- 2.9 19.7 +/- 1.8 18.5 +/- 2.7 18.6 +/- 2.2 19.4 +/- 2.9 19.1 +/- 3.3 19.2 +/- 1.8 18.9 +/- 2.2 16.5 +/- 2.1 17.4 +/- 1.8 19.4 +/- 1.4 16.7 +/- 3.2 18.3 +/- 1.6 JAN - MAR APR - JUN JUL - SEP QCT-DEC

,,,18.4,,+ 2.2 18.3'+/-- 1.2 18.6 +/- 1.3

19.3 + 2.6 18.8 +/- 2.6 16.3 +/- 0.8 17.2 +/- 2.4 17.7 +/- 1.1 17.1 +/- 1.0

.16.7:,+/- 0.8 18.4 +/- 1.9 19.7. +/- 1.8 19.1 +/- 1.7

9 1,,+/--.6 1 9.5 +/- 1.8 17.7 +/- 1.6 18.8 +/- 0.6 17.1 +/- 1.6 19.4 +/- 1.0 18.5 +/- 1.1 19.4 +/- 1.0 18.3+/- 0.9 18.3 +/- 1.1 16.4 +/- 1.7 19.0 +/- 1.0 17.1 +/- 0.8 18.0 +/- 1.2 19.2 +/- 1.4 18.9 +/- 1.4 18.5 +/- 2.5 16.7 +/- 4.2 18.4 +/- 0.8 19.0 +/- 2.6 18.9 +/- 1.1 18.3 +/- 0.4 18.7 +/- 0.6 19.0 +/- 2.3 17.0 +/- 1.4 18.5 +/- 1.1 19.5 +/- 1.8 17.5 +/- 1.3 18.6 +/- 1.0 19.3 +/- 2.1 17.6 +/- 1.5 18.9 +/- 1.7 18.1 +/- 1.4 18.7 +/- 1.6 18.9 +/- 1.2 18.5 +/- 1.1 16.4 +/- 0.6 16.9 +/- 0.5 18.7 +/- 1.5 16.3 +/- 1.1 17.9 +/- 1.1

- 18.2,+/- 0.9 18.3 +/- 1.4 18.6 +/- 1.4 17.7 +/- 1.4 18:1 +/- 1.5 16.0 +/- 2.1 17.7 +/- 1.7 16.9 +/- 0.5 17.3 +/- 0.9 17.2; +/- 1'.6 18.4 +/- 0.7 19.0 +/- 2.2 20.2 +/- 3.9 17.9+/- 1:1 18.4 +/- 0.3 17.8 +/- 2.0 17.9 +/- 1.8 18.6 +/- 3.3 19.2'+/- 2.3 18.4 +/- 3.3 19.4 +/- 1.9 18.7+/- 1.4 18.5 +/- 1.0 16.2 +/- 0.8 18.6 +/- 2.1 18.7 +/- 1.4 18.9 +/- 0.9 18.9 +/- 1.0 18.4 +/- 1.5 17.6 +/- 1.4 18.1 +/- 1.1 19.0 +/- 1.5 18.7 +/- 1.1 18.6 +/- 1.8 19.7 +/- 2.3 19.0 +/- 0.8 18.1 +/- 0.4 18.3 +/- 4.7 17.8 +/- 1.2 18.4 +/- 2.0 16.4 +/- 0.8 18.3 +/- 0.6 18.6 +/- 1.4 18.1 +/- 1.8 18.0 +/- 0.7 18.6 +/- 1.1 17.7 +/- 1.5 18.7 +/- 2.1 18.4 +/- 0.9 15.2 +/- 1.5 16.8 +/- 1.8 19.0 +/- 1.7 15.8 +/- 0.6 17.5 +/- 1.3

- 1,.9

+/- 1.2 18.8 +/- 2.1 19.1 +/- 0.5 18.3 +/- 0.8 17.8 +/- 1.0 15.4 +/- 1.0 17.6 +/- 0.8 18.1 +/- 1.2 17.2 +/- 1.1 16.5 +/-1.1 19.5 +/- 1.4 19.2 +/- 0.5 19.0 +/- 1.1 20.1 +/-33.0 19.3 +/- 2.2 17.9 +/- 1.3 19.1 +/- 1.7 17.1 +/- 0.8 20.3 +/- 1.6 18.7 +/- 1.2

-19.2 +/- 1.3 18.5 +/- 1.4 19.8 +/- 2.2 15.8 +/- 0.7 18.1 +/- 0.8 18.7 +/- 1.6 19.5 +/- 2.8 19.4 +/- 3.0 18.6 +/- 1.0 18.6 +/- 1.3 19.9 +/- 1.6 19.7 +/- 1.6 18.8 +/- 0.7 20.3 +/- 1.7 19.7 +/- 2.3 20.0 +/- 0.7 18.7 +/- 0.4 17.6 +/- 1.2 18.5 +/- 1.6 19.7 +/- 1.9 16.8 +/- 1.7 17.7 +/- 1.1 20.1 +/- 2.0 17.9 +/- 1.2 17.4 +/- 0.8 19.3 +/- 0.9 18.5 +/- 2.4 18.7 +/- 0.8 18.0 +/- 1.1 16.4 +/- 1.4 17.2 +/- 1.9 19.6 +/- 3.6 15.6 +/- 1.1 18.2 +/- 1.7 Th*.,,,1

.J +/- 1.

20.8 +/- 2.1 20.6 +/- 1.5 19.2 +/- 1.0 22.5 +/- 4.0 18.9 +/- 2.6 19.6 +/- 1.0 20.0 +/- 1.7 19.5 +/- 1.8 18.0 +/- 1.2 20.9 +/- 1.1

-.20.6 +/- 0.3 21.5 +/- 1.3 20.6 +/- 0.7 21.7 +/- 1.4 20.0 +/- 1.0 20.5 +/- 3.1 20.2 +/- 1.3 21.1 +/- 1.8 20.2 +/- 1.8 21.4 +/- 2.5 21.0 +/- 1.2 22.6 +/- 1.5 18.4 +/- 2.1 22.4 +/- 1.7 19.7 +/- 1.6 22.6 +/- 2.2 21.4 +/- 1.9 20.7 +/- 1.5 20.3 +/- 1.3 20.8 +/- 1.6 20.9 +/- 1.1 22.0 +/- 1.4 22.1 +/- 3.1 21.5 +/- 0.8 22.5 +/- 5.4 20.9 +/- 2.3 18.4 +/- 1.3 20.7 +/- 1.1 21.2 +/- 1.7 19.4 +/- 2.1 21.0 +/- 1.0 20.7 +/- 2.1 20.5 +/- 1.6 19.9 +/- 2.2 21.4 +/- 1.5 21.5 +/- 2.1 20.6 +/- 2.3 20.5 +/- 2.4 17.8 +/- 2.4 18.7 +/- 1.4 20.3 +/- 1.7 19.0 +/- 3.4 19.4 +/- 1.7 C-24

TABLE C-XAi"'

QUARTERLY TLD RESULTS FOR CLINTON POWER STATION, 2011

' "RE'SULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/-2 STANDARD DEVIATIONS STATION MEAN JAN - MAR APR-JUN JUL-SEP OCT-DEC CODE,.

+2SD..

+/-

CL-05MM 19.0 +/- 2.0 19.2 +/- 2.3 18.1 + 1.6 18.3 +/- 2.8 20.3 +/- 1.7 CL-46MM 19.7 +/- 2.2 19.3 +/- 1.3 18.8,+/- 1.5 19.3,+/- 2.6 21.3 +/- 1.8 CL-47MM 19.1 +/- 2.0 18.3+/- 1.8

, 18.4.+/- 1.8 19.0.+/- 2.3 20.5,+/- 1.6 CL-58MM 18.7 2.2 18.6 +/- 0.6 17.6 1.5 18.5 0.7 20.2 -

1.3 COMPARISON OF STATIONS CL-05,,CL-46, CL-47 AND CL-58 AND CORRESPONDING MM SAMPLES STATION MEAN JAN - MAR APR-JUN JUL - SEP OCT" DEC CODE

+/-2 S.D.

CL-05 19.3 +/- 4.3 18.8 +/- 2.6 18.1 +/- 1.5 17.8 +/- 1.0 22.5 - 4.0 CL-05MM 19.0 +/- 2.0

+/-19.2+/-

2.3 18.1 +/- 1.6 18.3 +/- 2.8 20.3 +/- 1.7 CL-46 16.7 +/- 2.3 16.4.+/- 1.7 16.2 +/- 0.8

.15.8 +/- 0.7 18.4.+ 2.1 CL-46MM 19.7ý +/- 2.2 19.3 +/- 1.3 18.8 +/- 1.5 19..3 +/- 2.6 21.3 - 1.8 CL-47 19.5 +/- 3.9 19.0 +/- 1.0 18.6 - 2.1

.18.1

+/- 0.8 22.4 +/- 1.7 CL-47MM 19.1 +/- 2.0 18.3 -

1.8 18.4 - 1.8 19.0 +/- 2.3 20.5 +/- 1.6 CL-58 19.8:+/- 2.6 18.3 +/- 0.4 19.7 +/- 2.3 19.7.+/- 2.3 21.5 +/- 0.8 CL-58MM 18.7 +/- 2.2 18.6 +/- 0.6 17.6 1.5 18.5,+/- 0.7 20.2 +/- 1.3 C-25

4 TABLE C-X.2 MEAN QUARTLY TLD RESULTS FOR THE INNER RING, OUTER RING,'

SPECIAL INTEREST, SUPPLEMENTAL AND CONTROL LOCATIONS FOR CLINTON POWER STATION, 2011 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/-2 STANDARD DEVIATIONS. OF THE STATION DATA COLLECTION INNER RING PERIOD

+/- 2 S.D.

OUTER RING SPECIAL INTEREST SUPPLEMENTAL CONTROL ii JAN-MAR APR-JUN JUL-SEP OCT-DEC 18.4 +/- 1.9 18.4 +/- 1.7 18.6 +/- 2.0 20.7 +/- 2.6 18.6 +/- 1.3 18.5 +/- 1.1 19.1 +/- 1.7 21.1 +/- 1.4 18.4 +/- 1.8 18.2 +/- 1.8 18.5 +/- 2.7 20.9 +/- 2.0 17.7 +/- 2.1 17.4 +/- 2.2 17.8 +/- 2.9 19.5 +/- 2.0 17.1 +/-

17.3 +/-

17.2 +/-

19.5 +/-

0.0 0j'o oJo TABLE C-X.3

SUMMARY

OF THE AMBIENT DOSIMETRY PROGRAM FOR CLINTON POWER STATION, 2011 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER LOCATION INNER RING OUTER RING SPECIAL INTEREST SUPPLEMENTAL CONTROL SAMPLES ANALYZED 64 64 28

ý`,56.

4 PERIOD MINIMUM 15.8 16.7 16.4 15.2

.17.1 PERIOD MAXIMUM 22.6 22.5 22.6 20.8 19.5 PERIOD MEAN

+/- 2 S.D.

19.0 +/- 2.8 19.3 +/- 2.5 19.0 +/- 3.0 18.1 +/-2.8 17.8 +/- 2.3 PRE-OP MEAN,

+/-2 S.D., ALL LOCATIONS 18 +/- 2.4 INNER RING STATIONS - CL-01, CL-05, CL-22, CL-23, CL-24, CL-34, CL-35, CL-36, CL-42, CL-43, CL-44, CL-45, CL-46, CL-47, CL-48, CL-63 OUTER RING STATIONS - CL-51, CL-52, CL-53, CL-54, CL-55, CL-56, CL-57, CL-58, CL-60, CL-61, CL-76, CL-77, CL-78, CL-79, CL-80, CL-81 SPECIAL INTEREST STATIONS - CL-37, CL-41, CL-49, CL-64, CL-65, CL-74, CL,75 SUPPLEMENTAL STATIONS - CL-02, CL-03, CL-04, CL-06, CL-07, CL-08, CL-114, CL-15, CL-33, CL-84, CL-90, CL-91, CL-97, CL-99 CONTROL STATIONS - CL-11

THE RESULTS FOR TLDs CL-05MM, CL-47MM, CL-58MM ARE NOT PART OF THE REMP AVERAGES. THEY ARE USED FOR COMPARISON PURPOSES ONLY.

C-26

1 I

FIGURE C-1 MEAN MONTHLY GROSS BETA CONCENTRATION IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CPS, 2011 0.052 0.047 -

0.042 0.037 0.032 0.027 0.022 0

0.017 0.012 0.007 0.002 MONTH PRE-OP (ALL SITES)

-*-2011 INDICATOR

-+-2011 CONTROL C-27

FIGURE C-2 MEAN QUARTERLY AMBIENT GAMMA RADIATION LEVELS (TLD) IN THE VICINITY OF CPS, 2011 E

E E

50 45 40 35 30 25 20 15 10 QUARTER E PRE-OP 02011 indicator 02011 control C-28

APPENDIX D,...

INTER-LABORATORY COMPARISON PROGRAM

Intentionally left blank

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2011 (PAGE 1 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a)

Value (b)

TBE/Analytics Evaluation (d)

March 2011 E7460-396 Milk E7461-396 Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-1 34 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L 98.8 97.4 pCi/L 15.2 15.8 1.01 0.96 A

A pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 92.9 96.9 0.96 A

not provided by Analytics for this study 398 298 1.34 N (1) 130 130 1.00 A

232 205 1.13 A

121 113 1.07 A

289 266 1.09 A

201 175 1.15 A

287 261 1.10 A

186 172 1.08 A

not provided by Analytics for this study E7463-396 AP Ce-141 Cr-51 Cs-1 34 Cs-1 37 Co-58 Mn-54 Fe-59 Zn-65 Co-60 243 85.0 168 89.2 171 129 159 132 215 94.2 148 81.8 192 126 189 124 June 2011 E7462-396 E7851-396 E7852-396 E7854-396 E7853-396 Charcoal 1-131 pCi 96.5 96.3 pCi/L 96.7 103 pCi/L 13.8 15.6 Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-1 34 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 110 68.1 186 164 140 141 136 128 263 189 49.9 95.6 104 83.8 90.7 74.5 62.0 140 119 103.0 79.9 206 190 138 152 138 123 261 195 42.9 110 102 74.0 81.3 73.9 66.1 140 104 1.13 0.90 1.14 1.09 0.89 1.02 0.84 1.06 1.00 0.94 0.88 1.07 0.85 0.90 0.86 1.01 0.93 0.99 1.04 1.01 0.97 1.16 0.87 1.02 1.13 1.12 1.01 0.94 1.00 1.14 0.89 A

A A

AP Ce-141 Cr-51 Cs-1 34 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 Charcoal 1-131 pCi 76.2 86.1 D-1

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2011 (PAGE 2 OF 3)

Identification

'Reported Known Ratio (c).

Month/Year Number Matrix Nuclide Units Value (a)

Value (b)

TBE/Analytics Evaluation (d)

September 2011 E8070-396 E8071-396 E8073-396 Milk Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 pCi/L

102.

90.8 pCi/L 13.2 14.7 pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 74.2 66.9 249 116 106 95.4 147 53.1 175 150 66.6 263 139 110 108 152 57.5 190 156 89.2 66.7 226 128 114 97.5 151 54.8 180 157 67.5 229 130 115 98.6 153 55.5 183 159 AP Ce-141 Cr-51 Cs-1 34 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 1.12.

0.90 0.83 1.00 1.10 0.91 0.93 0.98 0.97 0.97 0.97 0.96 0.99 1.15 1.07 0.96 1.10 0.99 1.04 1.04 0.98 0.96 1.00 0.82 0.91 E8072-396 Charcoal 1-131 pCi 77.6 80.6 pCi/L 93.3 93.1 pCi/L 12.7 15.4 December, 2011 E8230-396 Milk E8231-396 Milk Sr-89 Sr-90 1-131 Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 A

A A

A pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi/L pCi pCi pCi pCi pCi pCi pCi pCi pCi 82.5 90.2 not provided by Analytics for this study 465 566 0.82 A

142 171 0.83 A

185 210 0.88 A

177 221 0.80 A

208 241 0.86 A

164 183 0.90 A

259 291 0.89 A

224 270 0.83 A

not provided by Analytics for this study 344 368 0.93 A

105 111 0.95 A

129 137 0.94 A

145 144 1.01 A

137 157 0.87 A

119 119 1.00 A

..145 190 0.76 W

168 176 0.95 A

E8233-396 AP Ce-141 Cr-51 Cs-134 Cs-137 Co-58 Mn-54 Fe-59 Zn-65 Co-60 D-2

TABLE D-1

ýANkALYTiCSENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING; 2011 (PAGE3OF3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix,'...

Nuclidee.

nits, Value (a) v e (b)

TBE/Analytics Evaluation (d)

December2011 E8232-396 Charcoal 1-131

pCi, 100 :

89.5 1.12

A (1) Sample appears to be biased high. Corrective Action evaluated after the 2nd Quarter Analytics PE sample; no action required. NCR 11-13 (a) Teledyne Brown Engineering reported result.

(b) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(c) Ratio of Teledyne Brown Engineering to Analytics results.

(d) Analytics evaluation based on TBE internal QC limits: A= Acceptable. Reported result falls within ratio limits of 0.80-1.20.

W-Acceptable with warning. Reported result falls within 0. 70-0.80 or 1.20-1.30. N = Not Acceptable. Reported result falls outside the ratio limits of < 0.70 and> 1.30.

D-3

TABLE D-2 ERA ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM-;

TELEDYNEBROWN ENGINEERING, 2011 (PAGE 1 OF 1)

Identification'.

Reported Known Month/Year Number

.Media Nuclide Units Value (a) Value (b)

Control Limits.. Evaluation (c)

May 2011 RAD-85 Water.

Sr-89 Sr-90 7 -'

Ba-133 Cs-i 34 Cs-137 Co-60 Zn-65 Gr-A, Gr-B 1-131 U-Nat H-3..

Filter Gr-A MRAD-14 pCi/L 59.8,

63.2 pC i/L 42.5 42.5 pCi/L 73.3 75.3 pCi/L 64.9 72.9 pCi/L 74.6 77.0 pCi/L 87.8 88.8 pCi/L 103 98.9 pCi/L.

64.1 50.1 pCi/L.

51.8 49.8 pCi/L 27.4 27.5 pCi/L 38.5 39.8 pCi/L 10057 10200 pCi/filter 79.7 74.3 pCi/L 81.0 69.7 pCi/L 35.5 41.4 pCi/L 90.7 96.9 pCi/L.

36.6 33.4 pCi/L 44.7 44.3 pCi/L, 118.7 119 pCi/L 80.2 76.8 pCi/L 34.2 53.2 pCi/L 39.3 45.9 pCi/L 22.9 27.5 pCi/L 46.8 48.6 pCi/L 15733 17400 pCi/filter 44.6 58.4

.5.1.1 - 71.2 31.3-48.8 63.0 - 82.8 59.5 - 80.2 69.3 - 87.4 79.9-100 89.0- 118 26.1 -62.9 33.8 - 56.9 22.9 - 32.3 32.2 - 44.4 8870-11200 A

A A

N (i)

A A

38.5-112 A

November 20111 RAD-87 MRAD-15 Water Sr-89 Sr-90 Ba-133 Cs-134:

Cs-1 37 Co-60 Zn-65 Gr-A Gr-B1 1-131 U-Nat H-3 Filter Gr-A 56.9 - 77.9 30.2 -47.2 81.8-106 26.3 - 36.7 39.4-51.7 107 - 133 68.9 - 92.5 27.8 - 66.6 30.9-53.1 22.9 - 32.3 39.4 - 54.0 15200- 19100 30.3 - 87.8 N (2)

A A

(1) The solids on the planchet exceeded 100 mg, which was beyond the range of the efficiency curve. NCR 11-08 (2) Sr-89 TBE to known ratio of 1. 16 fell within acceptable range of +/- 20%. No action required. NCR 11-16 (a) Teledyne Brown Engineering reported result.

(b) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(c) ERA evaluation: A=acceptable. Reported result falls within the Warning Limits. NA=not acceptable. Reported result falls outside of the Control Limits. CE=check for Error. Reported result falls within the Control Limits and outside of the Warning Limit.

D-4

TABLE D-3 DoE's MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNEBROWN ENGINEERING, 2011 (PAGE 1 OF 2)

Identification Month/Year

-.,Number.

Media Nuclide Reported Known Acceptance

,Uits iiValue (a Va!ue (b)

Range,

':Evaluation (c)

March 2011 11-MaW24 11-GrW24 11-MaS24 1 1-RdF24 11-GrF24 11-RdV24 September 2011 11-MaW25 Water :

Cs-1 34 Cs-1 37 Co-57 Co-60 H Mn-54 K-40 Sr-90 Zn-65 Water Gr-A Gr-B Soil Cs-1i34 Cs-137 Co-57 Co-60 Mn-54' K-40 Sr-90 Zn-65 AP Cs-134.

Cs-.137 Co-57 Co-60 Mn-54 Sr-90 Zn-65 AP Gr-A Gr-B Vegetation Cs-134 Cs-137 Co-57 Co-60 Mn-54 Sr-90 Zn-65 Water Cs-1 34 Cs-1 37 Co-57 Co-60 H-3 Mn-54 K-40 Sr-90 Zn-65 Bq/L 19.1 21.5 15.1-28.0 Bq/L 29.0 29.4 20.6-38.2 Bq/L 0.139 (1)

Bq/L 23.9 24.6 17.2-32.0 Bq/L 265 243 170-316 Bq/L 31.8 31.6 22.1-41.1 Bq/L '

94.8 91 64-118 Bq/L 9.64 8.72 6.10-11.34 Bq/L

-0.142 (1)

Bq/L 0.767 1.136 0.341 - 1.931 Bq/L 3.43 2.96 1.48-4.44 Bq/kg 612 680 476-884 Bq/kg 772 758 531 - 985 Bq/kg" 910 927 649-1205 Bq/kg.

500 482 337 - 627 Bq/kg:ý 0.607 (1)

Bq/kg 569 540 378 - 702 Bq/kg NR 160 112-208 Bq/kg 1497 1359 951-1767 Bq/sample 3.26 3.49 2.44 - 4.54 Bq/sample 2.36 2.28 1.60-2.96 Bq/sample 3.30 3.33 2.33 -4.33 Bq/sample 0.0765 (1)

Bq/sample 2.84 2.64 1.85-3.43 Bq/sample NR 1.36 0.95 - 1.77 Bq/sample 3.30 3.18 2.23 - 4.13 Bq/sample 0.101 0.659 0.198 - 1.120 Bq/sample 1.23 1.323 0.662 - 1.985 Bq/sample 4.97 5.50 3.85-7.15 Bq/sample 0.0356 (1)

Bq/sample 10.8 9.94 6.96 - 12.92 Bq/sample 4.89 4.91 3.44-6.38 Bq/sample 6.42 6.40 4.48 - 8.32 Bq/sample NR 2.46 1.72-3.20 Bq/sample 3.07 2.99 2.09-3.89 Bq/L 16.0 19.1 13.4-24.8 Bq/L 0.0043 (1)

Bq/L 33.1 36.6 25.6-47.6 Bq/L 26.9 29.3 20.5-38.1 Bq/L 1011 1014 710-1318 Bq/L 23.2 25.0.

17.5-32.5 Bq/L 147 156 109-,203 Bq/L 15.8 14.2 9.9-18.5 Bq/L 27.3 28.5 20.0-37:1 A

A A

N (2)

A A

N (2)

A N (3)

A A

N (2)

A A

"A A

A A

D-5

TABLE D-3 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)

TELEDYNE BROWN ENGINEERING, 2011 (PAGE 2 OF 2)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a)

Value (b)

Range Evaluation (c)

September 2011 11-GrW25 11-MaS25 Water Gr-A Gr-B Soil Cs-134 Cs-137 Co-57 Co-60 Mn-54 K-40 Sr-90 Zn-65 AP Cs-134 Cs-137 Co-57 Co-60 Mn-54 Sr-90 Zný65',;

AP Gr-A Gr-B Bq/L 0.894 0.866 0.260 - 1.472 Bq/L 5.87 4.81 2.41 - 7.22 Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg Bq/kg

-0.213 1110 1290 731 987 753 276 1870

-0.043 3.09 5.36 3.41 0.067 1.84 5.17 979 1180 644 848 625 320 1560 (1) 685-1273 826-1534 451-837 594-1102 438-813 224-416 1092-2028 September 2011 11-RdF25 Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample Bq/sample (1) 2.60 1.82-3.38 5.09 3.56 -6.62 3.20 2.24-4.16 (1) 1.67 1.17-2.17 4.11 2.88-5.34 A

A A

W A

A A

A W

A A

A 11-GrF25 Bq/sample 0.0058 Bq/sample

-0.01 (1)

(1) 11-RdV25 Vegetation Cs-134 Cs-1 37 9.C

-57 Co-60 Mn-54 Sr-90 Zn-65 Bq/sample Bq/sample Bq/sample B'q/sample Bq/sample Bq/sample Bq/sample 0.0081 4.94 0.0639 3.36 5.89 16.31; 6.54 4.71 3.38 5.71 1.26 6.39 (1) 3.30-6.12 (1) 2.37-4.39 4.00 - 7.42 0.88ý-"1.64 4.47 - 8.31 (1) False positive test.

(2) Evaluated as failed due to not reporting a previously reported analyte. NCR 11-11 (3) The filter for Gross Alpha was counted on the wrong side. Recounted on the correct side resulted in acceptable results. NCR 11-I1 (a) Teledyne Brown Engineering reported result.

(b) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(c) DOEIMAPEP evaluation: A=acceptable, W=acceptable with warning, N=not acceptable.

D-6

I APPENDIX E ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM-REPORT (ARGPPR)

Intentionally left blank

Docket No:

50-461 CLINTON POWER STATION Annual Radiological Groundwater Protection Program Report 1 January through 31 December 2011 Prepared By Teledyne Brown Engineering Environmental Services Exelon..

Nuclear Clinton Power Station Clinton, IL 61727 April 2012

Intentionally left blank

Table Of Contents I. Sum m ary and Conclusions..............................................................................................

1 II. Introduction..............................................................................................................

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

3 B. Im plem entation of the O bjectives..................................................................

3 C. Program Description.......................................................................................

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

5 Ill. Program Description................................................................................................

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

5 B. Data Interpretation..........................................................................................

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

7

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

7 IV. Results and Discussion............................................................................................

9 A. G roundwater Results.....................................................................................

9 B. Surface W ater Results................................................................................

10 C. Recapture......................................................................................................

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

11 E. Leaks, Spills, and Releases.........................................................................

11 F. Trends...........................................................................................................

11 G. Investigations..............................................................................................

12 H. Actions Taken..............................................................................................

12

Appendices Appendix A Tables Table A-I Figures Appendix B8 Tables Table B-1.1 Table B-1.2 Table B-1.3 Table B-11.I Table B-7I.2 Location Designation of the Annual Radiological Groundwater Protection Program Report.(ARGPPR)

R.adiological Groundwater Protection Program-. Sampling Locations, Clinton Power Station, 2011 Routine Well Water and Surface Water Sample Locations for the Radiological Groundwater Protection Program, Clinton: Power Station, 2011 Data Tables of'theAnnual Radiological GroundWater Protection Program Report (ARGPPR)

Concentrations of:Tritium, Strontium, Gross Alpha, and Gross Beta in Groundwater Samples Collected in the Vicinity of Clinton Power Station, 2011;. :

Concentrations of Gamma Emitters in Groundwater*Samples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations. )f.Hard-To-Detects in Groundwater. Samples-Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Tritium and Strontium in SurfaceWater Sa'mples Collected in the Vicinity of Clinton Power Station, 2011.

Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 201 1.

ii

1.

Summary and Conclusions In 2006, Exelon instituted a comprehensive program to evaluate the impact of station operations on groundwater and surface water in the vicinity of Clinton Power Station (CPS). This evaluation involved numerous station personnel.and, contractor support personnel. This report covers groundwater and surface water samples, collected outside 0f the Licenseer6equlired Off-8Site Dose Calculation Manual (ODCM) requirements, both on and'off'stationf property in 2011. During that time period, 223 analyses were performed on 96 samples from 34 locations.

The monitoring was conducted in two phases.

,In assessing all the, data gathered forthis report, itwas concluded that the operation of CPS had no adverse radiological impact on the environment, and there are no known active releases into the groundwater or surface water at CPS. No program changes occurred during the sampling year of 2011. New corporate procedures were implemented in late.2010 and early 2011, with.

comn.piiance'to begin in'the first'quarter of 201,

Gamma-emitting radionuclides associated with licensed plant operations were not detected at concentrations greater than their respective Lower Limits of Detection (LLDs) as specified in NUREG-130Z-iný any of the groundwater-or surface water samples. In the case of tritium, Exelon specified that the independent laboratory achieve a lower limit of detection 10 times lower than that required by the United States Environmental Protection Agency (USEPA).

regulation.

Strontium-90 was not detected in any-samples above the LLD of 1 pCi/L.

..,,,Tritium was not detected in any of the groundwater or surface.water samples at concentrations greater than the United States Environmental Protection Agency (USEPA) drinking water standard (and the Nuclear Regulatory Commission Reporting Limit) of 20,000 pCi/L'. Background levels of tritium were detected at concentrations greater than the self-imposed LLD of 200 pCi/L'in three of 17 groundwater monitoring locations. The tritium concentrations ranged from 232 +

120 pCi/L to 451 +/- 147 pCi/L.

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions performed on groundwater samples during the third quarter sampling in 2011.

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

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

Gross Beta (dissolved) was detected in 15 of 17 groundwater locations. The concentrations ranged from 1.5 to 10.7 pCi/L. Gross Beta (suspended) was detected in 1 of 17 groundwater locations at a concentration of 1.8 pCi/L.

Hard-To-Detect analyses were performed on one groundwater location to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244, Pu.-238,, Pu-239/240, U-234, U-23.5,and U-238. All hard-to-detect nuclides were not detected at concentrations greater than their respective MDCs.

The Clinton Power Station (CFPS) consisting of one approximately 1,140 MW gross electrical power output boiling water reactor is located in Harp Township, DeWitt County, Illinois. CPS is owned and operated by Exelon and became operational in 1987. Unit No. 1 went critical on 15 February 1987. The site encloses approximately 13,730 acres. This includes the 4,895 acre, man-made cooling lake and about 452 acres of property not owned by Exelon. The plant is situated on approximately 150 acres. The cooling water discharge flume - which discharges to the eastern arm of the lake - occupies an additional 130 acres.

Although the nuclear reactor, supporting equipment and associated electrical generation and distribution equipment lie in Harp Township, portions of the aforementioned 13,730 acre plot reside within Wilson, Rutledge, DeWitt, Creek, Nixon and Santa Anna Townships.

This report covers those analyses performed by Teledyne Brown Engineering (TBE) on samples collected in 2011.

A.

Objectives of the Radiological Groundwater Protection Program (RGPP)

The long-term objectives of the RGPP are as follows:

1. Identify suitable locations to monitor and evaluate potential impacts from station operations before significant radiological impact to the environment and potential drinking water sources.

2. Understand the local hydrogeologic regime in the vicinity of the station and maintain up-to-date knowledge of flow patterns on the surface and shallow subsurface.

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

4. Report new leaks, spills, or other detections with potential radiological significance to stakeholders in a timely manner.

5. Regularly assess analytical results to identify adverse trends.

6. Take necessary corrective actions to protect groundwater resources.

B.

Implementation of the Objectives The objectives identified have been implemented at Clinton Power Station as discussed below:

1.

Exelon and its consultant identified locations as-described in the Phase 1 study. Phase 1 studies were conducted by Connestoga Rovers and Associates (CRA):and the results and conclusions were made available to state and federal regulators as well as the public instation specific reports.ý.

2.

The Clinton Power Station reports describe the local hydrogeologic regime. Periodically, the flow patterns on the surface and shallow Ssubsurface, are updated based on ongoing measurements.

3.,

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

.4.

Clinton Power-Station has implemented new procedures to identify and report newleaks, spills, or other detections with-potential radiological significance in a timely manner.

5.

ClintonPower Station staff and consulting hydrogeologist assess

.,analytical results on an ongoing basis to identify adverse trends.

C.

Program Description...

1.,

Sample Collection

'Sample locations can be found in Table ýA-1 and Figures A-1 and A-2, Appendix A.

Groundwater, and Surface Water

Samples of water are collected, managed, transported and analyzed in accordance,;with approved procedures following regulatory.-methods. Both groundwater and surface water are collected;.Sample locations, sample collection frequencies and analytical frequencies are controlled in accordance with approved station procedures. Contractor and/or station personnel are trained in the collection, preservation management, and shipment of samples, as well as in documentation of sampling events.

Analytical laboratories are subject to internal quality assurance programs, inter-laboratory cross-check programs, as well as nuclear industry audits. Station personnel review and evaluate all analytical data deliverables after initial review by the contractor.

Analytical data results are reviewed by both station personnel and an independent hydrogeologist for adverse trends or changes to hydrogeologic conditions.

"bI..

Cha:racteristics ofTritium (H-3)-.

Tritiur (chemical symbol H-3) is. a: 'radioactive isotope of hydrogen. The most common formn of tritium is-tritiu'moxide, which is also called "tritiated water." The chemical properties of tritium are essentially those of ordinary hydrogen.

Tritiated water behaves the same as0ordinhary water in both the

'environment and the body. Triti'um i:can-be'taken, into the body by drinking water, breathing air, eating food, or absorption through skin. Once tritium enters the bo'dy,"it disperses quickly:and is uniformly distributed throughout thebody. Tritium is 'excreted primaiily through urine with a clearance rate characterized by an, effective biological half-life of about 14 days: -Within one month or so after.ingestion, essentially all tritium is cleared. Organically bound tritium-(tritium that is 'incorporated in organic compounds) can remain in the 'body fora longer period.

Tritiumis produced naturally inthe up6per atmosphere when cosmic rays strike air molecules. Tritium is also produ'ed 'during nuclear weapons explosions, as a by-product in reactors producing electricity, and in special production reactors, where the isotopes lithidmn-7and/or boron-1 0 are activated to produce tritium.

Like normal water, tritiated water is colorless and odorless. Tritiated water behaves"ch'miniCally and physically like non-tritiated water in the subsurface, and therefore tritiated water will travel at the same velocity as the'average groundwa'ter velo-ity.

Tritium has a half-life of approximately 12.3 years. It decays spontaneously to helium-3 (3He). This radioactive decay releases a beta particle (low-energy electron). The radioactive decay of tritium is the source of the health risk from exposure to tritium. Tritium is one of the least dangerous radionuclides because it emits Very weak beta radiation and leaves the body' relatively quickly.- Since tritium is almost always found as water, it goes directly into soft tissues and organs. The associated dose to these tissues'is generally Uniform and is dependent on the water content of the specific tissue.

Ill.

Program Description A.

Sample Analysis This section describes the general analytical methodologies used by TBE and EIML to analyze the environmental samples'for radioactivity for the Clinton Power Station RGPP in 2011.

In order to, achieve the stated objectives, the-current program includes the following analyses:

1.:

Concentrations"ofgamma em itters' in; groundwater and surface water.,

2.- '.Concentrations,6f'strontium in groundwater-anrd surface water.

3. -,, :Concentrations of.tritium in groundwater and surface water.

4.

Concentrations of gross alpha and gross beta in groundwater.

5ý Concentrations of Am-241 in groundwater.

6.

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

7.

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

8.

Concentrations ofU-234, U-235-and&U-238 in groundwater.

9.

Concentrations of Fe-55 in groundwater.

10.

Concentrations of Ni-63 in groundwater.

B.

Data lIterpretation-The radiological data collected prior to'Clinton Power Station becoming operationalwere used as a baseline with which these operational data were compared. For the purpose of this report, Clinton Power Station was Considered operational at initial criticality'. Several factors'were important in the interpretationof the data:

1.

'Lower Limitof Detection and Minimum Detectable Concentration The lower limit of detection (LLD) is specified by federal regulation as a minimum sensitivity value that must be achieved routinely by the analytical paramneter.

2.:.

Laboratory Measurements Uncertainty The estimated uncertainty in measurementfof tritium in environmental samples is frequently on the order of 50% of the measurement value.

Statistically, the exact value of a measurement is expressed as a

, 'range with a stated-levelodfconfidence -The convention is to report results with a 95% level of confidence..'"The: uncertainty comes from calibration standards, sample volume or weight

..measurements, samplinguncertainty and other factors. Exelon reports the uncertainty of a measurementcreated by statistical process (counting error) as well as all sources of error (Total Propagated Uncertainty or TPU). ýEachoresult has two values calculated. Exelon reports the TPU by following the result with plus

.or minus,++/-the estimated :sample standa'rddeviation, as TPU, that is obtained by propagating all sources of analytical uncertainty in measurements..

Analytical uncertainties are repotted at the 95% confidence level in this report for reporting consistency with the AREOR.

Gamma spectroscopy results'for eachtype of sample were grouped as follows:

For groundwater and surface water.13 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-134, Cs-1 37, Ba-1 40 and La-1.40 were. reported.

C.

Background Analysis" A pre-operational radiological environmental monitoring program (pre-operational REMP) was conducted to establish background radioactivity levels. prior to operation of the Station. The environmental media sampled and analyzed'd6ring the pre-:opeational REMP Were atmospheric radiation fall-out, domestic water, surface'water, marine life, milk, and vegetation. The results of the monitoring were detailed in the report entitled, Environmental Radiological Monitoring for Clinton Power Nuclear Power Station, Illinois Power Company, Annual Report 1987, May 1988.

The pre-operational REMP contained analytical results from samples collected from the surface water and groundwater.

1.

Background Concentrations of Tritium..m The purpose of the following discussion is to summarize background measurements of tritium in various media performed by others.

a.

Tritium Production Tritium is created in the environment from naturally occurring processes both cosmic and subiterranean, as well as from anthropogenic (i.e., man-made) sources. In the upper atmosphere, "Cosmogenic" tritium is produced from the

.bombardment of stable nuclides and combines with oxygen to form tritiated water, which will then enter the hydrologic cycle. Below ground, "lithogenic" tritium is produced by the bombardment of natural lithium present in crystalline rocks

, byneutrons produced by the radioactive decay of naturally

..abundant',uranium and thorium.. Lithogenic production of tritium is, usually negligible compared to other sources due to the limited abundance of. lithium.in rock. The lithogenic tritium is introduced directly to groundwater.

A major anthropogenic source of tritium and strontium-90 comes from the former atmospheric testing of thermonuclear weapons. Levels of tritium in precipitation increased

-significantly during the 1950s and early 1960s, and later with additional testing, resulting in the release of significant amounts of tritium to the atmosphere. The Canadian heavy water nuclear power reactors, other commercial power reactors, nuclear research and weapons production continue to influence tritium concentrations in the environment.

b.

Precipitation Data Precipitation samples are routinely collected at stations around the world for the analysis of tritium and other radionuclidesi Two publiclyavailable databases that provide tritium concentrations in precipitation are Global Network of Isotopes in Precipitation (GNIP); and USEPA's RadNet database. GNIP provides tritium precipitation concentration data for samples collected world wide from 1960 to 2006.

RadNet provides tritium precipitation concentration data for

.samples collected at stations through out the U.S. from 1960 up to and including 2006. Based on GNIP data for sample stations located in the U.S. Midwest, tritium concentrations peaked around 1963. This peak, which approached 10,000 pCi/L for some stations, coincided with the atmospheric testing of thermonuclear weapons. Tritium concentrations in surface water showed a sharp decline up until 1975, followed by a gradual decline since that time. Tritium concentrations in Midwest precipitation have typically been below 100 pCi/L since around 1980. Tritium concentrations in wellsrmay still be above the 200 pCi/L detection limit from the external causes described above.

c.

Surface Water Data rTitium concentrations-are*routinely measured in Clinton Lake.

'According to the USEPA,"surface water data typically has an uncertainty +/- 70'to 100 pCi/l 95% confidence bound on each given measurement.- Therefore, the typical background data irgoided may be subject to measurement uncertainty of approximately-+/- 70 to 100 pCi/L.

t-he radio-analyticaliaborbat'ry is counting tritium results to an Exelon specified LLD of 200pCi/L. Typically, the lowest positive measurement will be reported within a range of 40 -

240 pCi/L or 140 +/- 100 pCi/L. Clearly, these sample results cannot'be distinguished aS different from background at this concentration.

IV.

Results and Discussion A.

Groundwater Results Groundwater Baseline samples were collected from on an off-site wells during

-four (4)' phas~s at the station. Analytical results are discussed below. No anomalies were noted during the year.

Tritium Samples from 17 locations:were *analyzed for tritium activity (Table B-1.1 Appendix B). Tritium values ranged from below the Exelon imposed LLD of 200 pic0-curies per liter to 451 pCi/I.

Strontium Strontium was not detected in any of the 17 samples analyzed and the required LLD of-I pCiiL was met (Table B-1.1 Appendix B).

Gross'Alpha and Gross Beta (dissolved and suspended)

Gross Alpha and Gross Beta analyses in the dissolved and suspended fractions were performed on groundwater samples during the third sampling in 2011. Gross Alpha (dissolved) was not detected at any of the groundwater locations. Gross Alpha (suspended) was not detected at any of the groundwater locations.

Gross Beta (dissolved) was detected in 15 of 17 groundwater locations. The concentrations ranged from 1.5 to 10.7 pCi/L.

Gross Beta (suspended) was detected in i of 17 groundwater locations at a concentration of 1.8 pCi/L (Table B-.1 Appendix B).

GammaEmitters No gamma; emitting nuclides were detected (Table B-1.2, Appendix B).

Hard-To-Detect Hard-To-Detect analyses were performed on one groundwater location to establish background levels. The analyses included Fe-55, Ni-63, Am-241, Cm-242, Cm-243/244' Pu-238, Pu-239/240, U-234, U-235 and U-238. All hard-to-detect nuclides were not detected at -concentrations greater than their respective MDCs (Table B-1.3 Appendix B).

B.

Surface Water Results Surface Water Baseline samples were collected from on-site surface waters during four (4) phases at the station. Analytical results are discussed below. No anomalies were.noted during the year..

Analytical results are discussed below. No anomalies were noted during theyear.

Tritium Samples from seven locations were analyzed for tritium activity (Table B-I1,.1.Appendix B). Tritium was not detected at concentrations greater than the LLD.

Strontium Strontium was not detected-in any of the 7 samples analyzed and the required LLD of,1 pCi/L was met (Table B-1.1 *Appendix B).

'Gamma Emitters No gamma emitting nuclides wre detected (Table g-11.2, Appendix B).

C.

Recapture Clinton Power Station conducted recapture precipitation sampling and analysis per the Radiological Groundwater Protection Program. No consistent indication of recapture Was-identified.

D.

Summary of Results - Inter-Laboratory Comparison Program Inter-Laboratory Comparison Program results for TBE are presented in the Annual Radiological Environmental Operating:Report.

E.,

Leaks, Spills, and Releases

,No leaks, spills or releases were identified during the year.

F.

Trends An increasing trend was identified in the tritium activity measured in monitoring well MW-CL-14S (reference IR 1323927). Tritium samples from CL-14S from the 2 nd, 3 rd, and 4th quarters of 2011 -showed detectable values for tritium (320 pCi/L, 321 pCi/L, and 399 pCi/L, respectively).

Historically, well MW-CL-14S has shown detectable levels of tritium in the 2 1d quarter of 2006 (201 pCi/L), the 2nd quarter of 2009 (230 pCi/L), and the 2 nd quarter of 2010 (216 pCi/L);, but never consistently, as observed in 2011.

The activity seen in MW-CL-1 4S is believed to be due to the natural migration of the only known tritium plume at Clinton Power Station. Clinton Power Station has historically seen consistently.positive tritium analysis results in only one well, MW-CL-21S. This activity is attributed to historical maintenance practices regarding the Cycled Condensate storage tank.

SMW-CL-714S is-the closest well to, and.down-gradientfrom MW-CL-21S.

The tritium concentration in MW-CL-21 &has shown an overall downward trend since 2008, when the activity peaked at 901 pCi/L. The uptrend in MW-CL-14S appears to be due to this plume migrating with the natural flow of groundwater. Concurrence with this evaluation was obtained from AMO Environmental Decisions, avendor that compiles and evaluates RGPP ground water data for the Exelon fleet.The trend in MW-CL-14S tritium activity does not require any action, and will continue to be monitored as dictated by the RGPP.

G.

Investigations Currently no investigations are on-going.

H.

Actions Taken

1. Compensatory Actions There have been no station events requiring compensatory actions at the Clinton Power Station in 2011.

2. Installation of Monitoring Wells No new wells were installed during the 2011.

3. Actions to Recover/Reverse Plumes No 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 Power Station, 2011 Site Site Type B-3 MW-CL-i MW-CL-2 MW-CL-121 MW-CL-131 MW-CL-13S MW-CL-14S MW-CL-151 MW-CL-15S MW-CL-16S MW-CL-17S MW-CL-181 MW-CL-18S MW-CL-19S MW-CL-20S MW-CL-21S MW-CL-22S Sewage Treatment Plant SW-CL-1 SW-CL-2 SW-CL-4 SW-CL-5 SW-CL-6 SW-CL-7 Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Monitoring Well Surface water Surface Water Surface Water Surface Water Surface Water Surface Water Surface Water A-1

CL-ff S Figure A - 1 Onsite Sampling Locations at Clinton Power Station A-2

Figure A - 2 Sampling Locations South of Clinton Power Station A-3

Figure A - 3 Sampling Locations East of Clinton Power Station A-4

-I r 4 "*

16 APPENDIX B

, DATA TABLES OF THE ANNUAL RADIOLOGICAL

-GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

C RPO T

Intentionally left blank

TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA, AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE H-3 SR-90 GR-A (DIS) GR-A (SUS)

GR-B (DIS)

GR-B (SUS)

B-3 B-3 B-3 B-3 MW-CL-1 MW-CL-1 MW-CL-1 MW-CL-1 MW-CL-121 MW-CL-121 MW-CL-121 MW-CL-121 MW-CL-131 MW-CL-131 MW-CL-131 MW-CL-131 MW-CL-13S MW-CL-13S MW-CL-13S MW-CL-13S MW-CL-14S MW-CL-14S MW-CL-14S MW-CL-14S MW-CL-151 MW-CL-151 MW-CL-151 MW-CL-151 MW-CL-15S MW-CL-15S MW-CL-15S MW-CL-15S MW-CL-16S MW-CL-16S MW-CL-16S MW-CL-16S MW-CL-17S MW-CL-17S MW-CL-17S MW-CL-17S 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/15/11 05/17/11 07/27/11 10/25/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/15/11 05/17/11 07/27/11 10/25/11 03/15/11 05/17/11 07/27/11 10/25/11

< 191

< 192

< 176

< 177

< 192

< 176

< 175

< 187

< 193

< 174

< 175

< 190

< 189

< 173

< 176

< 191

< 194 232 +/- 120

< 176

< 189 320 +/- 136 321 +/- 123 399 +/- 130

< 193

< 190

< 196

< 177

< 194

< 187

< 177

< 178

< 190

< 181

< 178

< 191

< 200

< 179

< 174

< 192

< 200

< 183

< 193

< 191

< 195

< 173

< 191

< 193

< 0.7

< 1.2

< 0.8

< 0.6

< 1.2

< 0.8

< 0.6

< 1.9

< 0.8

< 0.7

< 0.8

< 0.6 1.9 +/- 1.0

< 1.5 3.1 +/- 1.1

< 1.5 5.0 +/- 1.3

< 1.5 2.8 +/- 1.1

< 1.5

< 0.7

< 0.8

< 0.6 2.4 +/- 1.0

< 1.5

< 1.2

< 0.6 7.4 +/- 1.3

< 1.5

< 0.7

< 0.4

< 0.6 2.8 +/-0.7 1.8 +/- 1.1

< 0.8

< 0.9

< 0.5 1.5 +/- 0.8

< 1.8

< 0.7

< 2.3

< 0.5 7.1 +/- 1.4

< 1.8

< 0.8

< 2.9

< 0.7 2.4 1.4

< 2.0 MW-CL-181 03/15/11 MW-CL-181 MW-CL-181 MW-CL-181 MW-CL-18S MW-CL-18S MW-CL-18S MW-CL-18S MW-CL-19S 05/17/11 07/27/11 10/25/11 03/15/11 05/17/11 07/27/11 10/25/11 03/14/11

< 0.7

< 1.4

< 0.5

< 1.7

< 1.8

< 0.7

< 2.8

< 0.5 5.8 +/- 1.4

< 1.6 B-i

TABLE B-1.1 CONCENTRATIONS OF TRITIUM, STRONTIUM, GROSS ALPHA, AND GROSS BETA IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA COLLECTION H-3 SR-90 GR-A (DIS) GR-A (SUS)

DATE GR-B (DIS)

GR-B (SUS)

SITE MW-CL-19S MW-CL-19S MW-CL-19S MW-CL-2 MW-CL-2 MW-CL-2 MW-CL-2 MW-CL-20S MW-CL-20S MW-CL-20S MW-CL-20S MW-C L-21S MW-C L-21S MW-CL-21 S MW-CL-21 S MW-CL-22S MW-CL-22S MW-CL-22S MW-CL-22S 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/15/11 05/17/11 07/27/11 10/25/11

-c 164

< 184

< 195

-ý 194

< 188

< 172

< 176

< 193

< 194

< 182

< 191 307 451

.. 430

'389

< 188

< 193

< 183

< 187

<0.6

<2.6

<0.5

<0.9

<1.4

<0.8

<0.7

<1.6

<0.5 2.8 + 1.3

< 1.6 2.1 + 1.1

<,1.5

.3.3 +/- 1.2

<1.6

+/- 130

+/- 147

+/- 134

+/- 139

< 0.6

< 1.5

< 0.5

< 1.7

<1.6

< 0.6

< 2.4

< 0.5 10.7 1.5

< 1.6 B-2

At TABLE B-1.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER + SIGMA SITE COLLECTION Be-7 K-40 Mn-54 Co-58 Fe-59

.Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140 DATE B-3 07/26/11

< 38

< 74

< 4

< 5

< 8

< 5

< 7

< 5

< 7

< 4

< 5.

< 28

< 9'..

MW-CL-1 07/26/11

< 39

< 62

< 4

< 5

< 8

< 5

< 9

< 5

< 8

< 4

< 27

< 9 MW-CL-121 07/26/11

< 47

< 93

< 6

< 5

< 12

< 5

< 11

< 5.

< 9 5

< 5.

< 34

< 11.

MW-CL-131 07/26/11

< 46

< 77

< 4

< 5

< 11

< 4

< 9

< 5

< 8

< 4

< 5

< 29

< 9 MW-CL-13S 07/26/11

< 41

< 42

< 4

< 3

< 10

< 5

< 10

< 4

< 8

< 4

< 27

< 9 MW-CL-14S 07/27/11

< 33

< 58

< 4

< 3

< 9

< 3

< 6

< 4

< 7

< 4

< 24

< 7, MW-CL-151 07/26/11

< 42

< 49

< 4

< 5

< 11

< 6

< 7

< 5

< 10

< 4

< 41

< 27

< 9.

MW-CL-15S 07/26/11

< 43

< 86

< 4

< 10

< 5

< 9

< 5

< 9

< 4

< 5'

< 31

< 9.

MW-CL-16S 07/27/11

< 50

< 104

< 5

< 6

< 12

< 7

< 12

< 7

< 11

< 6

< 5

< 37

< 14 MW-CL-17S 07/27/11

< 48

< 41

< 5

< 9

< 5

< 9

< 5

< 8

< 4

<5

< 29

< 10 MW-CL-181 07/27/11

< 41

< 4

< 8

< 5

< 7

< 4

< 8

< 5

< 4,

< 28,

< 9 MW-CL-18S 07/27/11

< 51

< 103

< 5

< 12

< 5

< 9

< 5

< 9

< 5

<31-'*:

< 11!

MW-CL-19S 07/26/11

< 49

< 97

< 3

< 4

< 8

< 3

< 10

< 5

< 9

< 4

<5

< 29

< 10 MW-CL-2 07/26/11

< 38

< 80

< 4

< 9

< 5

< 8

< 5

< 7

< 4

< 29",'

< 9 MW-CL-20S 07/26/11

<42

'45

< 5

< 6

< 10

< 4

< 8

< 5

< 8

< 4

< 5

< 33..-

< 11 MW-CL-21S 07/26/11

<29

<71

<3

<6

4.

7

<2

<3

.<.3

<22

<7 MW-CL-21S 05/16/11

< 10

< 8

< 1

< 2

< 1

<2

< 1'

<1

<1"

< 17

< 5 MW-CL-22S 07/27/11

< 45

< 85

< 4

< 5

< 11

< 5

< 10

< 6

< 8

< 4

5.

< 31'

< 10

TABLE B-1.3 CONCENTRATIONS OF HARD TO DETECTS IN GROUNDWATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA AM-241 CM-242 CM-243/244 PU-238 PU-239/240 U-234 U-235

< 0.02

< 0.09

< 0.07

< 0.14

< 0.05 SITE MW-CL-21S COLLECTION DATE 07/26/11 U-238 FE-55 NI-63

< 0.15

< 59.7

< 4.00

TABLE B-11.1 CONCENTRATIONS OF TRITIUM AND STRONTIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION DATE H-3 SR-90 SITE SW-CL-1 SW-CL-1 SW-CL-1 SW-CL-1 SW-CL-2 SW-CL-2 SW-CL-2 SW-CL-2 SW-CL-4 SW-CL-4 SW-CL-4 SW-CL-4 SW-CL-5 SW-CL-5 SW-CL-5 SW-CL-5 SW-CL-6 SW-CL-6 SW-CL-6 SW-CL-6 SW-CL-7 SW-CL-7 SW-CL-7 SW-CL-7 SEWAGE TREATMENT PLANT SEWAGE TREATMENT PLANT SEWAGE TREATMENT PLANT SEWAGE TREATMENT PLANT 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11 03/14/11 05/16/11 07/26/11 10/24/11

< 193

< 192

< 179

< 191

< 164

< 192

< 180

< 190

< 164

< 196

< 184

< 191

< 164

< 193

< 177

< 197

< 167

< 199

< 179

< 190

< 164

< 158

< 179

< 199

< 166

< 160

< 175

193

< 0.8

< 0.7

< 0.6

0.6

< 0.9

< 0.5 B-5

TABLE B-II.2 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2011 RESULTS IN UNITS OF PCI/LITER +/- SIGMA SITE SW-CL-1 SW-CL-2 SW-CL-4 SW-CL-5 SW-CL-6 SW-CL-7 SEWAGE TREATMENT PLANT COLLECTION Be-7 DATE 07/26/11

< 40 07/26/11

< 44 07/26/11

< 52 07/26/11

< 35 07/26/11

< 39 07/26/11

< 49 07/26/11

< 41 K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-140 La-140

< 105

< 13

< 53

<34

< 50

< 89

< 86

<5

<4

<3

<4

<6

<4

<5

<4

< 11

< 10

< 12

<8

<9

< 11

<9

<5

<10

<5

<4

<9

<5

<6

<4

<9

<8

< 11

< 10

<9

<4

<5

<9

<6

< 10

<7

<9

<7

<5

<4

<5

<4

<5

<4

<5

< 33

< 31

< 34

26

< 34

< 33

< 32

< 14

<9

< 12

<9

< 10

<9 C6N U.

V

U-604072, Annual Radiological Environmental Operating Report

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