Text

Annual Radiological Environmental Operating Report
	ML071280382
Person / Time
Site:	Clinton
Issue date:	04/27/2007
From:	Kearney F; AmerGen Energy Co
To:	; Document Control Desk, NRC/NRR/ADRO
References
	FOIA/PA-2010-0209, U-603816
	Download: ML071280382 (128)
	v • d • e

Amer sm An Exelon Company Clinton Power Station R. R. 3, Box 228 Clinton, IL 61727 U-603816 April 27,2007 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 Annual Radiological Environmental Operating Report In accordance with Technical Specification requirement 5.6.2, AmerGen Energy Company, LLC (AmerGen) is submitting the 2006 Annual Radiological Environmental Operating Report for Clinton Power Station. This report covers the period from January 1, 2006 through December 31, 2006. This report provides the results for the Radiological Environmental Monitoring Program as called for in the Offsite Dose Calculation Manual.

Plant Manager 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

Docket No: 50-461 CLINTON POWER STATION Annual Radiological Environmental Operating Report 1 January Through 31 December 2006 Prepared By Teledyne Brown Engineering Environmental Services Ain Exelon Company Clinton Power Station Clinton, IL 61727 April 2007

Table Of Contents I. Sum m ary and Conclusions ................................................................................................ 1 I1. Introduction ................................................... 3 A. O bjectives of the REM P .................................................................................. 3 B. Im plem entation of the O bjectives .................................................................... 3 I1l. Program Description ................................................................................................... 4 A . Sam ple Collection ............................................................................................ 4 B. Sam ple Analysis ................................................................................................ 6 C . Data Interpretation ............................................................................................ 6 D. Program Exceptions ......................................................................................... 7 E. Program Changes ........................................................................................... 10 IV. Results and Discussion ............................................................................................. 10 A. Aquatic Environm ent ....................................................................................... 10

1. Surface W ater ....................................................................................... 10

2. Drinking W ater ..................................................................................... 10

3. G round W ater ....................................................................................... 11

4. Fish ....................................................................................................... 11

5. Sedim ent .............................................................................................. 12 B. Atm ospheric Environm ent ............................................................................. 12

1. Airborne ................................................................................................ 12

a. Air Particulates ........................................................................ 12

b. Airborne Iodine ........................................................................ 13

2. Terrestrial .............................................................................................. 13

a. Milk ........................................................................................... 13

b. Food Products ........................................................................... 14

c. G rass ......................................................................................... 14 C . Am bient G am m a Radiation ............................................................................. 14 D. Land Use Survey ............................................................................................ 15 E. Summary of Results - Inter-laboratory Comparison Program ........................ 16 V. References ...................................................................................................................... 18

Appendices Appendix A Radiological Environmental Monitoring Report Summary Tables Table A-1 Radiological Environmental Monitoring Program Annual Summary for the Clinton Power Station, 2006 Appendix B Location Designation, Distance & Direction, and Sample Collection &

Analytical Methods Tables Table B-i: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Clinton Power Station, 2006 Table B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection, Clinton Power Station, 2006 FigUres Figure B-i: Environmental Sampling Locations Within One Mile of the Clinton Power Station, 2006 Figure B-2: Environmental Sampling Locations Between One and Two Miles from the Clinton Power Station, 2006 Figure B-3: Environmental Sampling Locations Between Two and Five Miles from the Clinton Power Station, 2006 Figure B-4: Environmental Sampling Locations Greater Than Five Miles from the Clinton Power Station, 2006 Appendix C Data Tables and Figures - Primary Laboratory Tables Table C-1.1 Concentrations of 1-131 in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-1.2 Concentrations of Tritium in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

ii

Table C-1.3 Concentrations of Gamma Emitters in Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-I1.1 Concentrations of Gross Beta in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-11.2 Concentrations of Tritium in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-11.3 Concentrations of Gamma Emitters in Drinking Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-I11.1 Concentrations of Tritium in Ground Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-111.2 Concentrations of Gamma Emitters in Ground Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-IV.1 Concentrations of Gamma Emitters in Predator and Bottom Feeder (Fish) Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-V.1 Concentrations of Gamma Emitters in Sediment Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-VI.1 Concentrations of Gross Beta in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-VI.2 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, 2006.

Table C-VI.3 Concentrations of Gamma Emitters in Air Particulate Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-VII.1 Concentrations of 1-131 in Air Iodine Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-VIII.1 Concentrations of 1-131 in Milk Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-VIII.2 Concentrations of Gamma Emitters in Milk Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-IX.1 Concentrations of Gamma Emitters in Vegetation Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-IX.2 Concentrations of Gamma Emitters in Grass Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table C-X.1 Quarterly TLD Results for Clinton Power Station, 2006.

Table C-X.2 Mean Quarterly TLD Results for the Inner Ring, Outer Ring, Special Interest and Control Locations for Clinton Power Station, 2006.

iii

Table C-X.3 Summary of the Ambient Dosimetry Program for Clinton Power Station, 2006. ,

Table C-XI.1 Summary of Collection Dates for Samples Collected in the Vicinity of Clinton Power Station, 2006.

Figures Figure C-1 Mean Monthly Gross Beta Concentrations in Air Particulate Samples Collected in the Vicinity of CPS, 2006.

Figure C-2 Mean Quarterly Ambient Gamma Radiation Levels (TLD) in the Vicinity of CPS, 2006.

Appendix D Inter-Laboratory Comparison Program Tables Table D-1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2006 Table D-2 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering, 2006 Table D-3 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering, 2006 Table D-4 ERA Statistical Summary Proficiency Testing Program Environmental, Inc., 2006 Table D-5 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Environmental, Inc., 2006 Appendix E Annual Radiological Groundwater Protection Program Report (ARGPPR) iv

I. Summary and Conclusions This report on the Radiological Environmental Monitoring Program conducted for the Clinton Power Station (CPS) by AmerGen covers the period 1 January 2006 through 31 December 2006. During that time period, 1,595 analyses were performed on 1,321 samples. In assessing all the data gathered for this report and comparing these results with preoperational data, it was concluded that the operation of CPS had no adverse radiological impact on the environment.

There were zero (0) radioactive liquid releases from CPS during 2006. Releases of gaseous radioactive materials were accurately measured in plant effluents.

There was 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 Clinton Power Station was 8.78 E-04 mR (or 0.000878 milli-Roentgen).

Surface, drinking, and ground 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. No fission or activation products were detected. Gross beta activities detected were consistent with those detected in previous years. No tritium activity was detected and the required lower limit of detection (LLD) was met.

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

Air particulate samples were analyzed for concentrations of gross beta and gamma emitting nuclides. Cosmogenic Be-7 was detected at levels consistent with those detected in previous years. No fission or activation products were detected.

High sensitivity 1-131 analyses were performed on weekly air samples. All required LLDs were met.

Cow milk samples were analyzed for concentrations of 1-131 and gamma emitting nuclides. All 1-131 results were below the required LLDs with the exception of milk samples obtained on June 07, 2006 and June 21, 2006, as noted in the exceptions section. 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 gross beta and gamma emitting nuclides. Gross beta activities detected were consistent with those detected in previous years. 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. Levels detected were consistent with those observed in previous years.

II. Introduction The Clinton Power Station (CPS), consisting of one approximately 1140 MW gross electrical power output boiling water reactor is located in Harp Township, DeWitt County, Illinois. CPS is owned and operated by AmerGen Energy Company 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 AmerGen. The plant is situated on approximately 150 acres. The cooling water discharge flume - which discharges to the eastern arm of the lake

- occupies an additional 130 acres. Although the nuclear reactor, supporting equipment and associated electrical generation and distribution equipment lie in Harp Township, portions of the aforementioned 13,730 acre plot reside within Wilson, Rutledge, DeWitt, Creek, Nixon and Santa Anna Townships.

A Radiological Environmental Monitoring Program (REMP) for CPS was initiated in 1987. The preoperational period for most media covers the periods May 1980 through 27 February 1987 and was summarized in a separate report. This report covers those analyses performed by Teledyne Brown Engineering (TBE), Global Dosimetry, and Environmental Inc. (Midwest Labs) on samples collected during the period 1 January 2006 through 31 December 2006.

A. Objective of the REMP The objectives of the REMP are to:

1. Provide data on measurable levels of radiation and radioactive materials in the site environs.

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

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

1. Identifying significant exposure pathways.

2. Establishing baseline radiological data of media within those pathways.

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

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 2006. 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-07D and CL-12). All samples were collected in new unused plastic bottles, which were rinsed at least twice with source water prior to collection. Fish samples comprising the flesh of largemouth bass, crappie, carp, and bluegill, the species most commonly harvested from the lakes by sporting fishermen, were collected semiannually at two locations, CL-1 9 and CL-105 (control). Shoreline sediment samples composed of recently deposited substrate were collected at one location semiannually, CL-07B.

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-01, CL-02, CL-03, CL-04, CL-06, CL-07, CL-08, CL-1 1, CL-1 5, and CL-94). The control location was CL-1 1.

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

Milk samples were collected biweekly at one location (CL-1 16) from May through October, and monthly from November through April to coincide with the grazing season. All samples were collected in new unused plastic bottles from the bulk tank at each 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-1 15, CL-1 17 and CL-1 18). The control location was CL-1 14. Various broadleaf vegetable samples were collected and placed in new unused plastic bags, and sent to the laboratory for analysis.

Grass samples were collected biweekly at four locations (CL-01, CL-02, CL-08 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 (CaSO4 ) thermoluminescent dosimeters (TLD). The TLD locations were placed around the CPS site as follows:

An inner ring consisting of 16 locations (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 and CL-63) near and within the site perimeter.

An outeruing consisting of 16 locations (CL-51, CL-52, CL-53, CL-54, CL-55, CL-56, CL-57, CL-58, CL-60, CL-61, CL-76, CL-77, CL-78, CL-79, CL-80 and CL-81) extending to approximately 5 miles from the site designed to measure possible exposures to close-in population.

A special interest set consisting of seven locations (CL-37, CL-41, CL-49, CL-64, CL65, CL-74 and CL-75) representing special interest areas.

A supplemental set consisting of 14 locations (CL-02, CL-03, CL-04, CL-06, CL-07, CL-08, CL-15, CL-33, CL-84, CL-90, CL-91, CL-97, CL-99, and CL-114).

The balance of 1 location (CL-1 1) representing the control station.

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 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 vents 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 Global Dosimetry 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 2006. 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, vegetables and drinking water.

5. Ambient gamma radiation levels at various site environs.

C. Data Interpretation The radiological and direct radiation data collected prior to CPS becoming operational was used as a baseline with which these operational data were compared. For the purpose of this report, CPS was considered operational at initial criticality. In addition, data were compared to previous years' operational data for consistency and trending. Several factors were important.in the interpretation of the data:

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

2. Net Activity Calculation and Reporting of Results Net activity for a sample was calculated by subtracting background activity from the sample activity. Since the REMP measures extremely small changes in radioactivity in the environment, background variations may result in sample activity being lower than the background activity effecting a negative number. An 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, drinking water, well water, fish, sediment and milk, 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Zr-95, Nb-95, 1-131, Cs-134, Cs-137, Ba-140, and La-140 were reported.

For grass and vegetation 14 nuclides, Be-7, K-40, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Zr-95, Nb-95, 1-131, Cs-134, Cs-1 37, Ba-140, and La-140 were reported.

For air particulate 7 nuclides, Be-7, K-40, Co-60, Nb-95, Zr-95, Cs-134, and Cs-137 were reported.

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

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-0133, "Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants", October 1978, and within Radiological Assessment Branch Technical Position, Revision 1, November 1979, which states.... "Deviations are permitted from the required sampling schedule if specimens are unobtainable due to hazardous conditions, seasonal unavailability, malfunction of automatic sampling equipment and other legitimate reasons".... The below section addresses the reporting requirements found within Section 7.1 of the Station's ODCM.

May 24, 2006 - August 30, 2006 IR00545832 The May 24, 2006 grass and August 30, 2006 vegetation 1-131 LLD of 60 pCi/kg, the May 31, 2006 surface water 1-131 LLD of 15.0 pCi/L and the June 07, 2006 and June 21, 2006 milk 1-131 LLD of 1.0 pCi/L were unachievable as a result of degraded performance by vendor supplied filter paper used in laboratory analysis (which was identified on vender Non-Conformance report NCR 06-13).

Although the October 3, 2006 1-131 LLD was achieved for two (2) of the broadleaf vegetables at Garden Control Location CL-1 14 and one broadleaf vegetable at Garden Indicator Location CL-1 18, the report was issued past the due date. (Reference vendor Non-Conformance Report NCR 06-16).

July 26, 2006 IR00513641 Environmental Air Sampler CL-1 5 was found not running during the performance of the weekly surveillance. Sample volume calculations revealed that the minimum sample volume had not been achieved. Upon investigation, it was determined a seized motor resulted in the inoperable condition of this sample station.

August 28, 2006 IR00524467 During the performance of a routine inspection, Water Compositor CL-91 was observed to have intermittent flow due to clogging and restricting water flow. Supplement grab samples were obtained as an interim measure.

October 18, 2006 IR00545852 Composite Water Sampler, CL-99 was found with an error message stating 'Broken Distributor Arm' and was unable to collect programmed composite aliquot sampling. Supplement grab samples were obtained as an interim measure.

November 15, 2006 IR00561223 During the performance of the weekly surveillance, Environmental Air Sampler CL-1 was found not running due to a mouse chewing the incoming wires. Sample volume calculations revealed that the minimum sample volume had not been achieved.

November 22, 2006 IR00561223 Due to delays in rewiring and coordinating with the utility to secure power, Environmental Air Sample CL-1, although returned to service, was unable to achieve minimum required air volume.

December 6, 2006 IR00566094 During the performance of weekly surveillance, Environmental Air Sampling Stations, Cl-1, CI-94, Cl-15, CI-4, CI-6, were found to be operable, but sample volume calculations revealed that the minimum sample volume had not been achieved. This was due to an ice storm causing 500,000 homes to lose electricity.

December 12, 2006 IR00570276 During the performance of the weekly surveillance, Environmental Air Sampling stations CL-4 and CL-6 were found not running due to intermittent power interruptions as a result of restoring electrical power lines throughout the state. Sample volume calculations revealed that the minimum sample volume had not been achieved.

December 20, 2006 1R00571896 Composite Water Sampler, CL-99, was found locked up and was unable to collect programmed composite aliquot sampling. Upon further investigation, it appears that intermittent power loss at this station resulted in a lock up of the unit.

Each program exception was reviewed to understand the causes of the program exception. Sampling and maintenance errors were reviewed with the personnel involved to prevent recurrence. Occasional equipment breakdowns and power outages were unavoidable.

The overall sample recovery rate indicates that the appropriate procedures and equipment are in place to assure reliable program implementation.

E. Program Changes There were no Program Changes at the Clinton Power Station in 2006 regarding the Station's Radiological Environmental Monitoring Program (REMP). However, Clinton, in agreement with NRC Region Ill, National Energy Institute (NEI) and Exelon Nuclear, has provided - via Appendix E

- the results from out participation in a fleet wide initiative; Tritium Assessment / Radioactive Groundwater Protection Plan. Clinton has included new Monitoring Wells with their subsequent analysis that was performed in 2006.

IV. Results and Discussion A. Aquatic Environment

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

lod~nei131 Monthly samples from location CL-90 were analyzed for 1-131 activity (Table C-1.1, Appendix C). The required LLD was met.

Monthly samples from all locations were composited quarterly and analyzed for tritium activity (Table C-1.2, Appendix C). 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 sample at location CL-13 and two samples at location CL-99. No other nuclides were detected and all required LLDs were met.

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

Gross Beta Monthly samples were analyzed for concentrations of gross beta (Tables C-I1.1, Appendix C). The values ranged from <1.7 to 2.2 pCi/I. Concentrations detected were consistent with those detected in previous years.

Monthly samples were composited quarterly and analyzed for tritium activity (Table C-I1.2, Appendix C). The required LLD was met.

Gamma Spectrometry Monthly samples were analyzed for gamma emitting nuclides (Table C-I1.3, Appendix C). ). Naturally occurring K-40 was found in two samples at location CL-14. No other nuclides were detected and all required LLDs were met.

3. Ground Water Quarterly grab samples were collected at two locations (CL-7D and CL-12, consisting of CL-12R and CL-12T). The following analyses were performed:

Trhtum Samples from all locations were analyzed for tritium activity (Table C-I11.1, Appendix C). The required LLD was met.

Gamma Spectrometry Samples from all locations were analyzed for gamma emitting nuclides (Table C-111.2, Appendix C). No nuclides were detected and all required LLDs were met.

4. Fish Fish samples comprised of carp, bass, bluegill, crappie and channel catfish were collected at two locations (CL-1 9 and CL-1 05) semiannually. The following analysis was performed:

Gamma Spectrometry The edible portion of fish samples from both locations was analyzed for gamma emitting nuclides (Table C-IV.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 sediment samples were collected at one location (CL-07B) 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. The 10 locations were separated into three groups: Group I represents locations within one mile of the CPS site boundary (CL-02, CL-03, CL-04, CL-06, CL-15, and CL-94). Group II represents the locations at an intermediate distance within one to five miles of CPS (CL-01, CL-07, and CL-08), and Group III represents the control location greater than five miles from CPS (CL-1 1). The following analyses were performed:

Gros 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 5 to 37 E-3 pCi/m 3 with a mean of 20 E-3 pCi/m 3 . The results from the Intermediate Distance location (Group II) ranged from 7 to 34 E-3 pCi/m 3 with a mean of 19 E-3 pCi/m 3. The results from the Control locations (Group Ill) ranged from 10 to 39 E-3 pCi/m 3 with a mean of 21 E-3 pCi/m 3 . Comparison of the 2006 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 2006 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 Be-7 due to cosmic ray activity was detected in all samples. Potassium-40 was detected in three samples. No other nuclides were detected and all required LLDs were met.

b. Airborne Iodine Continuous air samples were collected from 10 locations (CL-01, CL-02, CL-03, CL-04, CL-06, CL-07, CL-08, CL-11, CL-1 5 and CL-94) and analyzed weekly for 1-131 (Table C-VII.1, Appendix C). All results were less than the MDC and the required LLD was met.

2. Terrestrial

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

Milk samples were analyzed for concentrations of 1-131 (Table C-VIII.I, Appendix C). The required LLD was met.

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

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

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

b. Food Products Samples were collected from four locations (CL-1 14, CL-1 15, CL-1 17 and CL-1 18) monthly June through September. The following analyses were performed:

Gamma Spectrometry Each food product sample was 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 47 of 48 samples. Naturally occurring K-40 activity was found in all samples. No other nuclides were detected and all required LLDs were met.

b. Grass Samples were collected from four locations (CL-01, CL-02, CL-08, and CL-1 16) biweekly May through October. The following analyses were performed:

Gamma Spectrometry Each grass sample 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 52 samples. Naturally occurring K-40 activity was found in 51 of 52 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 2006. The average dose from the inner ring was 21.3 mR/quarter. The average dose from the outer ring was 21.3 mR/quarter. The average dose from the special interest group was 21.1 mR/quarter. The average dose from the supplemental group was 20.3 mR/quarter. The quarterly measurements ranged from 16.4 to 24.5 mR/quarter. The inner ring and outer ring measurements compared well to the control station, CL-1 1, which ranged from 18.2 mR/quarter to 21.9 mR/quarter with an average measurement of 20.1 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 2006 growing season around the Clinton Power Station (CPS) was performed by Environmental Inc. (Midwest Labs) for AmerGen 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 1/2 degree sectors around the site. The distance and direction of all locations from the CPS Station HVAC vent stack were positioned using Global Positioning System (GPS) technology. There were no changes required to the CPS REMP, as a result of this survey. The results of this survey are summarized below.

Distance in Miles from the CPS Station HVAC Vent Stack Sector Residence Garden Milk Farm Miles Miles Miles 1N 0.9 0.9 0.9 2 NNE 1.0 2.3 2.3 3 NE 1.3 2.2 >5.0 4 ENE 1.8 2.6 >5.0 5E 1.0 >5.0 >5.0 6 ESE 3.2 3.3 >5.0 7SE 2.4 >5.0 >5.0 8 SSE 1.7 2.8 >5.0 9S 3.0 3.0 4.1 10SSW 2.9 >5.0 3.4 11 SW 0.7 >5.0 >5.0 12 WSW 1.6 2.9 3.4 13W 1.2 1.2 >5.0 14 WNW 1.6 1.6 >5.0 15 NW 1.6 >5.0 >5.0 16 NNW 1.7 1.3 1.3 E. Summary of Results - Inter-Laboratory Comparison Program The primary and secondary laboratories analyzed Performance Evaluation (PE) samples of air particulate, air iodine, milk, soil, vegetation and water matrices for 28 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. DOE Evaluation Criteria MAPEP's evaluation report provides an acceptance range with associated flag values.

The MAPEP defines three levels of performance: Acceptable (flag =

"A"), Acceptable with Warning (flag = "W"), and Not Acceptable (flag = "N"). Performance is considered acceptable when a mean result for the specified analyte is +/- 20% of the reference value.

Performance is acceptable with warning when a mean result falls in the range from +/- 20% to +/- 30% of the reference value (i.e., 20% <

bias < 30%). If the bias is greater than 30%, the results are deemed not acceptable.

For the primary laboratory, 24 out of 28 analytes met the specified acceptance criteria. Four samples did not meet the specified acceptance criteria for the following reasons:

1. Teledyne Brown Engineering's MAPEP Series 15 January 2006 soil Cs-134 was evaluated as a false positive, although TBE considered the result a non-detect due to the peak not being identified by the gamma software. MAPEP suggests the Bi-214 is not being differentiated from the Cs-1 34 peak. When the ratio of activity to uncertainty exceeds 3, TBE will use a key line analysis rather than a weighted mean analysis when evaluating MAPEP non-detects.

2. Teledyne Brown Engineering's MAPEP Series 15 January 2006 Sr-90 in vegetation result of 2.22 Bq/kg exceeded the upper acceptance range of 2.029 Bq/kg. The samples were analyzed in triplicate and the results averaged. One high result of 2.43 Bq/kg biased the submitted results on the high side. TBE was unable to determine the cause for the higher result. The Sr-90 in vegetation results for MAPEP Series 14 and MAPEP Series 16 were acceptable. No client samples were analyzed during the MAPEP Series 14 time period.

3. Teledyne Brown Engineering's MAPEP Series 15 January 2006 Pu-238 and Pu-239/240 in vegetation result of 2.22 Bq/kg failed the required acceptance ranges. TBE was evaluating the current preparation method for vegetation samples, which proved insufficient for the analyses. TBE does not perform isotopic Pu on client's vegetation samples.

For the secondary laboratory, 20 out of 25 analytes met the specified acceptance criteria. Seven samples did not meet the specified acceptance criteria for the following reasons:

1. Environmental Inc.'s ERA November 2006 water 1-131 result of 28.4 pCi/L exceeded the upper control limit of 27.3 pCi/L. The reported result was an average of three analyses, results ranged from 25.36 pCi/L to 29.23 pCi/L. A fourth analysis was performed, with a result of 24.89 pCi/L.

2. Environmental Inc.'s MAPEP January 2006 vegetation Pu-238 result of 0.08 Bq/sample exceeded the lower control limit of 0.10 Bq/sample due to incomplete dissolution of the sample.

3. Environmental Inc.'s MAPEP January 2006 air particulate Pu-238 result of 0.03 Bq/sample exceeded the lower control limit of 0.05 Bq/sample due to incomplete dissolution of the sample.

4. Environmental Inc.'s MAPEP January 2006 soil Pu-238, Pu-239/240, U-233/234 and U-238 results of 14.6, 14.6, 13.5 and 15.4 Bq/kg, respectively, exceeded the lower control limits of 42.81, 32.09, 25.9 and 27.2 Bq/kg, respectively, due to incomplete dissolution of the sample.

The Inter-Laboratory Comparison Program provides evidence of the 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 N545-1975.

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

3. CPS 2001 Annual Radioactive Effluent Release Report.

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

5. "Natural Radon Exposure in the United States," Donald T. Oakley, U.S.

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

6. Federal Radiation Council Report No. 1, "Background Material for the Development of Radiation Protection Standards," May 13, 1960.

7. International Commission on Radiation Protection, Publication 2, "Report of Committee II on Permissible Dose for Internal Radiation," (1959) with 1962 Supplement issued in ICRP Publication 6; Publication 9, "Recommendations on Radiation Exposure," (1965); ICRP Publication 7 (1965), amplifying specific recommendations of Publication 26 (1977).

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

9. "Radioactivity in the Environment: Sources, Distribution and Surveillance,"

Ronald L. Kathren, 1984.

10. National Council on Radiation Protection and Measurements, Report No.

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

11. National Council on Radiation Protection and Measurements, Report No.

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

12. National Council on Radiation Protection and Measurements, Report No.

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

13. National Council on Radiation Protection and Measurements, Report No.

91, "Recommendations on Limits for Exposure to Ionizing Radiation," June 1987.

14. National Council on Radiation Protection and Measurements, Report No.

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

September 1987.

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

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

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

18. United States Nuclear Regulatory Commission, Regulatory Guide 1.109, "Calculation of Annual Dose to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR Part 50, Appendix I, "Revision 1, October 1977.

19. United States Nuclear Regulatory Commission Branch Technical Position, "An Acceptable Radiological Environmental Monitoring Program," Revision 1, November 1979.

20. United States Nuclear Regulatory Commission, Regulatory Guide 4.15, "Quality Assurance for Radiological Monitoring Programs (Norm Operations) - Effluent Streams and the Environment," Revision 1, February 1979.

21. Technical Specifications, Clinton Power Station, Unit No. 1, Docket No.

50-461, Office of Nuclear Reactor Regulation, 1986. Facility Operating License Number NPF-62.

22. Clinton Power Station, Updated Safety Analysis Report.

23. Clinton Power Station, Unit 1, Off-Site Dose Calculation Manual.

APPENDIX A RADIOLOGICAL ENVIRONMENTAL MONITORING REPORT

SUMMARY

- m m -_ - H m m m m m m m m m m m TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SURFACE WATER 1-131 (LOW LVL) 12 1.2 1.2 CL-90 INDICATOR 0 (PCI/LITER) (0/12) (I) (0/12) DISCHARGE FLUME

(< 0.3/< 6.1) (I) (< 0.3/< 6.1) 0.4 MILES SE OF SITE H-3 16 2000 169 N/A 171 CL-13 INDICATOR 0 (0/16) (0/4) SALT CREEK BRIDGE ON RT. 10

(<127/<196) (<131/<194) 3.6 MILES SW OF SITE GAMMA 48 BE-7 N/A 41 N/A 44 CL-91 INDICATOR 0 (0/48) (0/12) PARNELL BOAT ACCESS

(<13/<72) (<14/<72) 6.1 MILES ENE OF SITE K-40 N/A 63 N/A 69 CL-90 INDICATOR 0 (3/48) (0/12) DISCHARGE FLUME

(<11/<139) (<14/<139) 0.4 MILES SE OF SITE MN-54 15 5 N/A 5 CL-99 INDICATOR 0 (0/48) (0/12) NORTH FORK ACCESS

(< 1/<9) (<1/<9) 3.5 MILES NNE OF SITE CO-58 15 5 N/A 5 CL-91 INDICATOR 0 (0/48) (0/12) PARNELL BOAT ACCESS

(<1/<8) (<2/<8) 6.1 MILES ENE OF SITE FE-59 30 10 N/A 11 CL-91 INDICATOR 0 (0/48) (0/12) PARNELL BOAT ACCESS

(<3/<18) (<4/< 18) 6.1 MILES ENE OF SITE CO-60 15 5 N/A 5 CL-13 INDICATOR 0 (0/48) (0/12) SALT CREEK BRIDGE ON RT. 10

(<I/<10) (<1/<10) 3.6 MILES SW OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

mmm - - m -m - m - m - - m - m - m -_

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SURFACE WATER ZN-65 30 11 N/A 11 CL-99 INDICATOR 0 (PCI/LITER) (0/48) (0/12) NORTH FORK ACCESS

(<2/<26) (<2/<22) 3.5 MILES NNE OF SITE NB-95 15 5 N/A 5 CL-13 INDICATOR 0 (0/48) (0/12) SALT CREEK BRIDGE ON RT. 10

(<2/<10) (<2/< 10) 3.6 MILES SW OF SITE ZR-95 30 8 N/A 9 CL-99 INDICATOR (0/48) (0/12) NORTH FORK ACCESS

(<3/<16) (<3/<15) 3.5 MILES NNE OF SITE CS- 134 15 5 N/A 6 CL-99 INDICATOR (0/48) (0/12) NORTH FORK ACCESS

(<1/<14) (<1/<13) 3.5 MILES NNE OF SITE CS-137 18 5 N/A 5 CL-99 INDICATOR 0 (0/48) (0/12) NORTH FORK ACCESS

(<1/<9) (<1/<9) 3.5 MILES NNE OF SITE BA-140 60 28 N/A 30 CL-99 INDICATOR 0 (0/48) (0/12) NORTH FORK ACCESS

(<10/<44) (< 16/<4 1) 3.5 MILES NNE OF SITE LA- 140 15 9 N/A 9 CL-99 INDICATOR 0 (0/48) (0/12) NORTH FORK ACCESS

(<3/<I15) (<5/<14) 3.5 MILES NNE OF SITE CE-144 N/A 33 N/A 35 CL-91 INDICATOR 0 (0/48) (0/12) PARNELL BOAT ACCESS

(<9/<5 7) (<9/<56) 6.1 MILES ENE OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

m - - - - - - mm m m -m - - - m - - -

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS DRINKING WATER GR-B 12 4 2.0 N/A 2.0 CL-14 INDICATOR 0 (PCI/LITER) (4/12) (4/12) STATION PLANT SERVICE BLDG

(< 1.7/2.2) (< 1.7/ 2.2) ONSITE H-3 4 2000 169 N/A 169 CL-14 INDICATOR 0 (0/4) (0/4) STATION PLANT SERVICE BLDG

(<130/<190) (<130/<190) ONSITE GAMMA 12 BE-7 N/A 42 N/A 42 CL-14 INDICATOR 0 w.)

(0/12) (0/12) STATION PLANT SERVICE BLDG

(<13/<67) (<1 3/<67) ONSITE K-40 N/A 69 N/A 69 CL-14 INDICATOR 0 (2/12) (2/12) STATION PLANT SERVICE BLDG

(<26/<128) (<26/< 128) ONSITE MN-54 15 5 N/A 5 CL-14 INDICATOR 0 (0/12) (0/12) STATION PLANT SERVICE BLDG

(<I/<8) (< 1/<8) ONSITE CO-58 15 5 N/A 5 CL-14 INDICATOR 0 (0/12) (0/12) STATION PLANT SERVICE BLDG

(<I/<8) (<1/<8) ONSITE FE-59 30 10 N/A 10 CL-14 INDICATOR 0 (0/12) (0/12) STATION PLANT SERVICE BLDG

(<3/<16) (<3/<16) ONSITE CO-60 15 4 N/A 4 CL-14 INDICATOR (0/12) (0/12) STATION PLANT SERVICE BLDG

(<I/<8) (<1/<8) ONSITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

m - m m - ml - m - - - m m - - m - -

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS DRINKING WATER ZN-65 30 10 N/A 10 CL-14 INDICATOR 0 (PCI/LITER) (0/12) (0/12) STATION PLANT SERVICE BLDG

(<2/<19) (<2/<19) ONSITE NB-95 15 5 N/A 5 CL-14 INDICATOR 0 (0/12) (0/12) STATION PLANT SERVICE BLDG

(<1/<9) (<1/<9) ONSITE ZR-95 30 8 N/A 8 CL-14 INDICATOR (0/12) (0/12) STATION PLANT SERVICE BLDG

(<3/<13) (<3/<13) ONSITE CS-134 15 5 N/A 5 CL-14 INDICATOR (0/12) (0/12) STATION PLANT SERVICE BLDG

(<1/<1 1) (<1/<11) ONSITE CS-137 18 5 N/A 5 CL-14 INDICATOR (0/12) (0/12) STATION PLANT SERVICE BLDG

(<1/<8) (<1/<8) ONSITE BA-140 60 28 N/A 28 CL-14 INDICATOR 0 (0/12) (0/12) STATION PLANT SERVICE BLDG

(<13/<39) (< 13/<39) ONSITE LA-140 15 9 N/A 9 CL-14 INDICATOR 0 (0/12) (0/12) STATION PLANT SERVICE BLDG

(<4/< 14) (<4/<14) ONSITE CE-144 N/A 32 N/A 32 CL-14 INDICATOR 0 (0/12) (0/12) STATION PLANT SERVICE BLDG

(<8/<55) (<8/<55) ONSITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

m - -, m - - - - - - m - m - - - m TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GROUND WATER H-3 12 2000 169 N/A 174 CL-12R INDICATOR 0 (PCI/LITER) (0/12) (0/4) DEWITT PUMP HOUSE

(<153/<180) (<167/<180) 1.6 MILES E OF SITE GAMMA 12 BE-7 N/A 51 N/A 56 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<36/<73) (<44/<66) 1.6 MILES E OF SITE K-40 N/A 85 N/A 100 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<37/<119) (<86/<110) 1.6 MILES E OF SITE MN-54 15 5 N/A 6 CL-12R INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<4/<9) (<4/<9) 1.6 MILES E OF SITE CO-58 15 6 N/A 6 CL-12R INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<4/<8) (<5/<8) 1.6 MILES E OF SITE FE-59 30 13 N/A 14 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<8/<17) (<1 /<17) 1.6 MILES E OF SITE CO-60 15 6 N/A 6 CL-12R INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<4/<9) (<5/<9) 1.6 MILES E OF SITE ZN-65 30 13 N/A 15 CL-12R INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<9/<27) (<10/<27) 1.6 MILES E OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

m- .-.m - m, - n- -M -M - M n TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GROUND WATER NB-95 15 6 N/A 7 CL- 12T INDICATOR 0 (PCI/LITER) (0/12) (0/4) DEWITT PUMP HOUSE

(<5/<10) (<6/<8) 1.6 MILES E OF SITE ZR-95 30 10 N/A 12 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<7/<15) (<11/<15) 1.6 MILES E OF SITE CS-134 15 6 N/A 7 CL-12R INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE 0ý~ (<4/<13) (<4/<13) 1.6 MILES E OF SITE CS-137 18 6 N/A 6 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<4/<8) (<5/<8) 1.6 MILES E OF SITE BA-140 60 32 N/A 35 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<24/<42) (<33/<37) 1.6 MILES E OF SITE LA-140 15 11 N/A 12 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<8/<14) (<9/<14) 1.6 MILES E OF SITE CE-144 N/A 40 N/A 43 CL-12T INDICATOR (0/12) (0/4) DEWITT PUMP HOUSE

(<28/<60) (<32/<55) 1.6 MILES E OF SITE FISH GAMMA 16 (PCI/KG WET) BE-7 N/A 370 478 478 CL-105 CONTROL (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<179/<580) (<379/<686) (<379/<686) 50 MILES S OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

~ NO -w a* 1w, - !M M Am Mw 0 m -

TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FISH K-40 N/A 3506 3755 3755 CL-105 CONTROL 0 (PCI/KG WET) (8/8) (8/8) (8/8) LAKE SHELBYVILLE (2,640/4,890) (3,030/5,100) (3,030/5,100) 50 MILES S OF SITE MN-54 130 40 46 46 CL-105 CONTROL 0 (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<12/<7 1) (<24/<76) (<24/<76) 50 MILES S OF SITE CO-58 130 41 55 55 CL-105 CONTROL (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<18/<72) (<38/<79) (<3 8/<79) 50 MILES S OF SITE FE-59 260 95 130 130 CL-105 CONTROL (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<45/<167) (<99/<1 76) (<99/<176) 50 MILES S OF SITE CO-60 130 38 46 46 CL-105 CONTROL (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<1I/<71) (<24/<76) (<24/<76) 50 MILES S OF SITE ZN-65 260 89 109 109 CL-105 CONTROL (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<28/<172) (<57/<184) (<57/<1 84) 50 MILES S OF SITE NB-95 N/A 43 59 59 CL-105 CONTROL 0 (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<19/<66) (<47/<82) (<47/<82) 50 MILES S OF SITE ZR-95 N/A 78 97 97 CL-105 CONTROL 0 (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<32/<147) (<64/<145) (<64/< 145) 50 MILES S OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND 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, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS FISH CS-134 100 42 48 48 CL-105 CONTROL 0 (PCI/KG WET) (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<12/<78) (<26/<82) (<26/<82) 50 MILES S OF SITE CS-137 100 39 46 46 CL-105 CONTROL 0 (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<12/<69) (<24/<80) (<24/<80) 50 MILES S OF SITE BA-140 N/A 574 1127 1127 CL-105 CONTROL 0 00 (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<260/<947) (<250/<2,140) (<250/<2,140) 50 MILES S OF SITE LA-140 N/A 173 361 361 CL-105 CONTROL 0 (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<74/<285) (<80/<684) (<80/<684) 50 MILES S OF SITE CE-144 N/A 228 253 253 CL-105 CONTROL 0 (0/8) (0/8) (0/8) LAKE SHELBYVILLE

(<64/<528) (<140/<463) (<140/<463) 50 MILES S OF SITE SEDIMENT GAMMA 2 (PCI/KG DRY) BE-7 N/A 158 N/A 158 CL-07B INDICATOR 0 (0/2) (0/2) CLINTON LAKE

(<151/<165) (<151/<165) 2.1 MILES SE OF SITE K-40 N/A 7325 N/A 7325 CL-07B INDICATOR 0 (2/2) (2/2) CLINTON LAKE (6,630/8,020) (6,630/8,020) 2.1 MILES SE OF SITE MN-54 N/A 17 N/A 17 CL-07B INDICATOR 0 (0/2) (0/2) CLINTON LAKE

(<14/<20) (<1 4/<20) 2.1 MILES SE OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND 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, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SEDIMENT CO-58 N/A 17 N/A 17 CL-07B INDICATOR (PCI/KG DRY) (0/2) (0/2) CLINTON LAKE

(<16/<19) (<16/<19) 2.1 MILES SE OF SITE FE-59 N/A 42 N/A 42 CL-07B INDICATOR (0/2) (0/2) CLINTON LAKE

(<38/<47) (<38/<47) 2.1 MILES SE OF SITE CO-60 N/A 21 N/A 21 CL-07B INDICATOR (0/2) (0/2) CLINTON LAKE

(<1 8/<23) (<18/<23) 2.1 MILES SE OF SITE ZN-65 N/A 43 N/A 43 CL-07B INDICATOR (0/2) (0/2) CLINTON LAKE

(<32/<54) (<32/<54) 2.1 MILES SE OF SITE NB-95 N/A 20 N/A 20 CL-07B INDICATOR (0/2) (0/2) CLINTON LAKE

(<18/<22) (<1 8/<22) 2.1 MILES SE OF SITE ZR-95 N/A 33 N/A 33 CL-07B INDICATOR (0/2) (0/2) CLINTON LAKE

(<29/<36) (<29/<36) 2.1 MILES SE OF SITE CS-134 150 18 N/A 18 CL-07B INDICATOR 0 (0/2) (0/2) CLINTON LAKE

(<13/<23) (<13/<23) 2.1 MILES SE OF SITE CS-137 180 18 N/A 18 CL-07B INDICATOR 0 (0/2) (0/2) CLINTON LAKE

(< 15/<20) (<15/<20) 2.1 MILES SE OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

O m -m MR t " i f i *-'- am M TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS SEDIMENT BA-140 N/A 136 N/A 136 CL-07B INDICATOR 0 (PCI/KG DRY) (0/2) (0/2) CLINTON LAKE

(<105/< 167) (<105/<167) 2.1 MILES SE OF SITE LA-140 N/A 41 N/A 41 CL-07B INDICATOR 0 (0/2) (0/2) CLINTON LAKE

(<32/<50) (<32/<50) 2.1 MILES SE OF SITE CE-144 N/A 104 N/A 104 CL-07B INDICATOR (0/2) (0/2) CLINTON LAKE 0 (<95/< 112) (<95/<1 12) 2.1 MILES SE OF SITE AIR PARTICULATE GR-B 523 10 20 21 21 CL-Il CONTROL (E-3 PCI/CU.METER) (470/470) (53/53) (53/53) ILLINOIS POWER SUBSTATION (5/37) (10/39) (10/39) 16 MILES S OF SITE GAMMA 40 BE-7 N/A 79.3 72.8 89.9 CL-04 INDICATOR 0 (27/36) (3/4) (3/4) RESIDENCE NEAR RECREATION AREA (48/119) (62/<83) (54/119) 0.8 MILES SW OF SITE K-40 N/A 47 43.6 56.6 CL-07 INDICATOR 0 (3/36) (0/4) (1/4) MASCOUTIN RECREATON AREA

(<21/<79) (<20/<61) (<40/<77) 2.3 MILES SE OF SITE CO-60 N/A 2.7 3.0 3.6 CL-03 INDICATOR 0 (0/36) (0/4) (0/4) CLINTON'S SECONDARY ACCESS ROAD

(< 1/<6) (<2/<4) (<2/<6) 0.7 MILES NE OF SITE NB-95 N/A 5.0 4.2 5.3 CL-01 INDICATOR 0 (0/36) (0/4) (0/4) CAMP QUEST

(<2/<1 1) (<3/<7) (<3/<9) 1.8 MILES W OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND 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, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS AIR PARTICULATE ZR-95 N/A 8.4 7.9 10.8 CL-07 INDICATOR 0 (E-3 PCI/CU.METER) (0/36) (0/4) (0/4) MASCOUTIN RECREATON AREA

(<3/<18) (<5/< 16) (<5/< 18) 2.3 MILES SE OF SITE RU-103 N/A 6.9 6.4 7.9 CL-03 INDICATOR (0/36) (0/4) (0/4) CLINTON'S SECONDARY ACCESS ROAD

(<1/<16) (<4/<1 0) (<3/<15) 0.7 MILES NE OF SITE RU-106 N/A 24 22.3 29.6 CL-15 INDICATOR (0/36) (0/4) (0/4) RT. 900N RESIDENCE

(<12/<42) (<14/<38) (<20/<37) 0.9 MILES N OF SITE CS-134 50 2.9 2.6 3.4 CL-07 INDICATOR 0 (0/36) (0/4) (0/4) MASCOUTIN RECREATON AREA

(< 1/<6) (<1/<5) (<2/<6) 2.3 MILES SE OF SITE CS-137 60 2.6 2.1 3.2 CL-07 INDICATOR 0 (0/36) (0/4) (0/4) MASCOUTIN RECREATON AREA

(<1/<5) (<2/<3) (< 2/<5) 2.3 MILES SE OF SITE CE-141 N/A 11.5 10 14.5 CL-02 INDICATOR 0 (0/36) (0/4) (0/4) CLINTON'S MAIN ACCESS ROAD

(<3/<36) (<4/<20) (<4/<36) 0.7 MILES NNE OF SITE CE-144 N/A 13.3 11 17 CL-02 INDICATOR 0 (0/36) (0/4) (0/4) CLINTON'S MAIN ACCESS ROAD

(<6/<40) (<9/< 15) (<8/<40) 0.7 MILES NNE OF SITE AIR IODINE GAMMA 523 (E-3 PCI/CU.METER) 1-131 70 43 45 47 CL-04 INDICATOR 0 (0/470) (0/53) (0/52) RESIDENCE NEAR RECREATION AREA

(<1 0/<69) (<1 0/<67) (<23/<69) 0.8 MILES SW OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

W* ,i fw",*B ..N ! m, -4i tI 4-M o wl TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS MILK 1-131 (LOW LVL) 18 N/A 0.8 0.8 CL-I 16 CONTROL 0 (PCI/LITER) (0/18) (0/18) PASTURE IN RURAL KENNEY

(< 0.3/< 2.2) (< 0.3/< 2.2) 14 MILES WSW OF SITE GAMMA 19 BE-7 N/A N/A 63 63 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<19/<100) (<19/<100) 14 MILES WSW OF SITE K-40 N/A N/A 1233 1233 CL- 116 CONTROL 0 (19/19) (19/19) PASTURE IN RURAL KENNEY (1,020/1,510) (1,020/1,510) 14 MILES WSW OF SITE MN-54 N/A N/A 7 7 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<2/<1 1) (<2/<1 1) 14 MILES WSW OF SITE CO-58 N/A N/A 7 7 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<2/<13) (<2/<13) 14 MILES WSW OF SITE FE-59 N/A N/A 17 17 CL-1 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<5/<25) (<5/<25) 14 MILES WSW OF SITE CO-60 N/A N/A 8 8 CL-I 16 CONTROL (0/19) (0/19) PASTURE IN RURAL KENNEY

(<2/<I13) (<2/<13) 14 MILES WSW OF SITE ZN-65 N/A N/A 18 18 CL-I 16 CONTROL (0/19) (0/19) PASTURE IN RURAL KENNEY

(<5/<3 1) (<5/<31) 14 MILES WSW OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND 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, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS MILK NB-95 N/A N/A 8 8 CL-I 16 CONTROL 0 (PCI/LITER) (0/19) (0/19) PASTURE IN RURAL KENNEY

(<2/<11) (<2/< 11) 14 MILES WSW OF SITE ZR-95 N/A N/A 13 13 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<4/<24) (<4/<24) 14 MILES WSW OF SITE CS-134 15 N/A 7 7 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<2/<I13) (<2/<13) 14 MILES WSW OF SITE CS-137 18 N/A 8 8 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<2/<14) (<2/<14) 14 MILES WSW OF SITE BA-140 60 N/A 38 38 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(< 19/<5 1) (< 19/<5 1) 14 MILES WSW OF SITE LA- 140 is N/A II II CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<5/<15) (<51<15) 14 MILES WSW OF SITE CE-144 N/A N/A 50 50 CL-I 16 CONTROL 0 (0/19) (0/19) PASTURE IN RURAL KENNEY

(<14/<79) (<14/<79) 14 MILES WSW OF SITE VEGETATION GAMMA 48 (PCI/KG WET) BE-7 N/A 302 800 800 CL-I 14 CONTROL 0 (35/36) (12/12) (12/12) CISCO (62/787) (97/5,440) (97/5,440) 12.5 MILES SSE OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND 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, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS VEGETATION K-40 N/A 4829 5729 5729 CL-1 14 CONTROL (PCI/KG WET) (36/36) (12/12) (12/12) CISCO (2,340/12,500) (2,740/9,560) (2,740/9,560) 12.5 MILES SSE OF SITE MN-54 N/A 6 9 9 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<2/<11) (<3/<38) (<3/<38) 12.5 MILES SSE OF SITE CO-58 N/A 7 11 11 CL- 114 CONTROL (0/36) (0/12) (0/12) CISCO

(<3/<18) (<4/<55) (<4/<55) 12.5 MILES SSE OF SITE FE-59 N/A 17 26 26 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<8/<32) (<I11/<1 10) (<1I1/<1 10) 12.5 MILES SSE OF SITE CO-60 N/A 6 9 9 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<2/<15) (<3/<37) (<3/<37) 12.5 MILES SSE OF SITE ZN-65 N/A 15 23 23 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<6/<37) (<7/<106) (<7/<106) 12.5 MILES SSE OF SITE NB-95 N/A 7 12 12 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<3/<13) (<4/<65) (<4/<65) 12.5 MILES SSE OF SITE ZR-95 N/A 12 16 16 CL-1 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<5/<23) (<8/<54) (<8/<54) 12.5 MILES SSE OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

- - U -40., w I M AM TABLE A-i RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS VEGETATION 1-131 60 43 47 47 CL-I 14 CONTROL 0 (PCI/KG WET) (0/36) (0/12) (0/12) CISCO

(<23/<60) (<22/<60) (<22/<60) 12.5 MILES SSE OF SITE CS-134 60 6 10 10 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<2/<14) (<3/<54) (<3/<54) 12.5 MILES SSE OF SITE CS-137 80 6 9 9 CL-1 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<2/<19) (<3/<38) (<3/<38) 12.5 MILES SSE OF SITE BA- 140 N/A 80 204 204 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<42/<378) (<40/<1,560) (<40/<1,560) 12.5 MILES SSE OF SITE LA-140 N/A 24 71 71 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<11/<159) (<12/<597) (<12/<597) 12.5 MILES SSE OF SITE CE-144 N/A 35 56 56 CL-I 14 CONTROL (0/36) (0/12) (0/12) CISCO

(<14/<75) (<21/<233) (<21/<233) 12.5 MILES SSE OF SITE GRASS GAMMA 52 (PCI/KG WET) BE-7 N/A 1402 1626 1694 CL-02 INDICATOR 0 (39/39) (13/13) (13/13) CLINTON'S MAIN ACCESS ROAD (276/3,250) (828/2,590) (727/2,910) 0.7 MILES NNE OF SITE K-40 N/A 6218 6425 7450 CL-08 INDICATOR 0 (38/39) (13/13) (13/13) DEWITT CEMETERY

(<565/8,820) (4,460/7,940) (3,860/8,820) 2.2 MILES E OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

At am m 1" 0" wo *N =

1 mo ob s awM)A'4, OW TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBEROF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GRASS MN-54 N/A 14 15 16 CL-02 INDICATOR 0 (PCI/KG WET) (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<3/<42) (<4/<33) (<3/<34) 0.7 MILES NNE OF SITE CO-58 N/A 17 17 19 CL-02 INDICATOR (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<4/<52) (<5/<43) (<4/<42) 0.7 MILES NNE OF SITE FE-59 N/A 42 47 47 CL-I 16 CONTROL (0/39) (0/13) (0/13) PASTURE IN RURAL KENNEY

(<9/<149) (< 13/< 140) (<13/<140) 14 MILES WSW OF SITE CO-60 N/A 15 15 17 CL-02 INDICATOR (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<3/<57) (<4/<3 1) (<3/<37) 0.7 MILES NNE OF SITE ZN-65 N/A 36 39 42 CL-02 INDICATOR (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<7/<I107) (<9/<82) (<7/<91) 0.7 MILES NNE OF SITE NB-95 N/A 17 20 20 CL-I 16 CONTROL (0/39) (0/13) (0/13) PASTURE IN RURAL KENNEY

(<4/<56) (<5/<54) (<5/<54) 14 MILES WSW OF SITE ZR-95 N/A 29 31 33 CL-02 INDICATOR 0 (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<7/<90) (<9/<65) (<7/<72) 0.7 MILES NNE OF SITE 1-131 60 64 48 99 CL-02 INDICATOR 0 (0/30) (0/9) (0/10) CLINTON'S MAIN ACCESS ROAD

(<18/<577) (<24/<60) (<18/<577) 0.7 MILES NNE OF SITE THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDAs AND THE POSITIVE VALUES FRACTION OF DETECTABLE MEASUREMENTS AT SPECIFIED LOCATIONS IS INDICATED IN PARENTHESES (F)

ow I m lib 6" IN"A*i, ww" ! .:n Aft!m;W, TABLE A-I RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

FOR THE CLINTON POWER STATION, 2006 Name of Facility: CLINTON POWER STATION DOCKET NUMBER: 50-461 Location of Facility: DEWITT COUNTY, IL REPORTING PERIOD: ANNUAL 2006 INDICATOR CONTROL LOCATION WITH HIGHEST ANNUAL MEAN LOCATIONS LOCATION MEDIUM OR TYPES OF NUMBER OF REQUIRED MEAN MEAN MEAN STATION # NUMBER OF PATHWAY SAMPLED ANALYSES ANALYSES LOWER LIMIT (F) (F) (F) NAME NONROUTINE (UNIT OF PERFORMED PERFORMED OF DETECTION RANGE RANGE RANGE DISTANCE AND DIRECTION REPORTED MEASUREMENT) (LLD) MEASUREMENTS GRASS CS-134 60 15 16 17 CL-02 INDICATOR 0 (PCI/KG WET) (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<3/<43) (<4/<35) (<3/<36) 0.7 MILES NNE OF SITE CS-137 80 14 16 17 CL-02 INDICATOR 0 (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<3/<33) (<4/<39) (<3/<33) 0.7 MILES NNE OF SITE BA-140 N/A 210 222 231 CL-02 INDICATOR 0 (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<42/<997) (<50/<754) (<42/<717) 0.7 MILES NNE OF SITE LA-140 N/A 59 65 67 CL-02 INDICATOR 0 (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<10/<371) (<14/<234) (<10/<243) 0.7 MILES NNE OF SITE CE-144 N/A 96 108 112 CL-02 INDICATOR (0/39) (0/13) (0/13) CLINTON'S MAIN ACCESS ROAD

(<19/<228) (<26/<215) (<19/<2 18) 0.7 MILES NNE OF SITE DIRECT RADIATION TLD-QUARTERLY 216 N/A 21 20 112 CL-57 INDICATOR 0 M ILLI-ROENTGEN/STD.MO. (208/208) (8/8) (4/4)

(16/25) (18/23) (20/24)

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

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

TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Clinton Power Station, 2006 Location Location Description Distance & Direction From Site A Stirface Water C1-13 Salt Creek Bridge on Rt. 10 (indicator) 3.6 miles SW CL-90 Discharge Flume (indicator) 0.4 miles SE CL-91 Parnell Boat Access (indicator) 6.1 miles ENE CL-99 North Fork Access (indicator) 3.5 miles NNE R I'frinkino (Pnt~hIP Wntar CL-14 Station Plant Service Bldg (indicator) onsite C well Water CL-07D Mascoutin Recreation Area (indicator) 2.3 miles ESE CL-12T DeWitt Pump House (indicator) 1.6 miles E CL-12R DeWitt Pump House (indicator) 1.6 miles E D. Milk - hi-weekly / monthly CL-1 16 Control 14 miles WSW F Air Padriculatts / Air Iodine CL-01 Camp Quest 1.8 miles W CL-02 Clinton's Main Access Road 0.7 miles NNE CL-03 Clinton's Secondary Access Road 0.7 miles NE CL-04 Residence Near Recreation Area 0.8 miles SW CL-06 Clinton's Recreation Area 0.7 miles WSW CL-07 Mascoutin Recreation Area 2.3 miles SE CL-08 DeWitt Cemetery 2.2 miles E CL-11 Illinois Power Substation (Control) 16 miles S CL-15 Rt. 900N Residence 0.9 miles N CL-94 Old Clinton Road 0.6 miles E E Fish CL-19 End of Discharge Flume (indicator) 3.4 miles E CL-105 Lake Shelbyville (control) 50 miles S (G. Shoreline Sediment CL-07B Clinton Lake (indicator) 2.1miles SE H. Food Producits CL-114 Cisco (Control) 12.5 miles SSE CL-1 15 Site's Secondary Access Road 0.7 miles NE CL-117 Residence North of Site 0.9 miles N CL-118 Site's Main Access Road 0.7 miles NNE L Grass CL-01 Camp Quest 1.8 miles W CL-02 Clinton's Main Access Road 0.7 miles NNE CL-08 DeWitt Cemetery 2.2 miles E CL-116 Pasture in Rural Kenney 14 miles WSW B-I

TABLE B-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Clinton Power Station, 2006 Location Location Description Distance & Direction From Site J Fnvirnnmpnt;l losnim.try - T1 1 In ner Ring CL-01 1.8 miles W CL-05 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-1: Radiological Environmental Monitoring Program - Sampling Locations, Distance and Direction, Clinton Power Station, 2006 Location Location Description Distance & Direction From Site Sp.ial Int.r.t 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-02 0.7 miles NNE CL-03 0.7 miles NE CL-04 0.8 miles SW CL-06 0.8 miles WSW CL-07 2.3 miles SE CL-08 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

TABLE B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Clinton Power Station, 2006 Sample Analysis Sampling Method Analytical Procedure Number Medium Surface Water Gamma Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy from a continuous water compositor. Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy Surface Tritium Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid Water from a continuous scintillation water compositor.

Env. Inc., T-02 Determination of tritium in water (direct method)

Drinking Gross Beta Monthly composite TBE, TBE-2008 Gross Alpha and/or gross beta activity in Water from a continuous various matrices water compositor.

Env. Inc., W(DS)-01 Determination of gross alpha and/or gross beta in water (dissolved solids or total residue)

Env. Inc., W(SS)-02 Determination of gross alpha and/or qross beta in water (suspended solids)

Drinking Gamma Monthly composite TBE, TBE-2007 Gamma emitting radioisotope analysis Water Spectroscopy from a continuous water compositor. Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy Drinking Tritium Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid Water from a continuous scintillation water compositor.

Env. Inc., T-02 Determination of tritium in water (direct method)

Well Water Gamma Quarterly composite TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy from a continuous water compositor. Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy Well Water Tritium Quarterly composite TBE, TBE-2011 Tritium analysis in drinking water by liquid from a continuous scintillation water compositor.

Env. Inc., T-02 Determination of tritium in water (direct method)

Fish Gamma Semi-annual samples TBE-2007 Gamma emitting radioisotope analysis Spectroscopy collected via electroshocking or Env. Inc., GS-01 Determination of gamma emitters by other techniques gamma spectroscopy Air Gross Beta One-week composite of TBE, TBE-2008 Gross Alpha and/or gross beta activity in Particulates continuous air various matrices sampling through glass fiber filter paper Env. Inc., AP-02 Determination of gross alpha and/or gross beta in air particulate filters Air Gamma Quarterly composite of TBE, TBE-2007 Gamma emitting radioisotope analysis Particulates Spectroscopy each station Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy Air Iodine Gamma One-week composite of TBE, TBE-2007 Gamma emitting radioisotope analysis Spectroscopy continuous air sampling through Env. Inc., 1-131-02 Determination of 1-131 in charcoal charcoal filter canisters by gamma spectroscopy (batch method)

Milk 1-131 Bi-weekly grab sample TBE, TBE-2012 Radioiodine in various matrices when cows are on pasture. Monthly all Env. Inc., 1-131-01 Determination of 1-131 in milk by anion I other times exchange B-4

TABLE B-2: Radiological Environmental Monitoring Program - Summary of Sample Collection and Analytical Methods, Clinton Power Station, 2006 Sample Analysis Sampling Method Analytical Procedure Number Medium Food Gross Beta Monthly grab June TBE, TBE-2008 Gross Alpha and/or gross beta activity in Products through September various matrices Env. Inc., EIML-AB-01 Gross alpha or gross beta in solid samples Food Gamma Monthly grab June TBE, TBE-2007 Gamma emitting radioisotopes analysis Products Spectroscopy through September Env. Inc., GS-01 Determination of gamma emitters by gamma spectroscopy Grass Gamma Biweekly May through TBE, TBE-2007 Gamma emitting radioisotopes analysis Spectroscopy October Env. Inc., GS-0 1 Determination of gamma emitters by qiamma spectroscopy TLD Thermoluminesc Quarterly TLDs Global Dosimetry ence Dosimetry comprised of two Global Dosimetry CaF 2 elements.

B-5

I I

I U

I

£ U

I U

I I

I Figure B-i Environmental Sampling Locations Within One

£ Mile of the Clinton Power Station, 2006 B-6

Figure B-2 Environmental Sampling Locations Between One and Two Miles of the Clinton Power Station, 2006 B-7

Figure B-3 Environmental Sampling Locations Between Two and Five Miles of the Clinton Power Station, 2006 B-8

Figure B-4 Environmental Sampling Locations Greater Than Five Mles of the Clinton Paw Station, 2006 B-9

APPENDIX C DATA TABLES AND FIGURES -

PRIMARY LABORATORY

TABLE C-1.1 CONCENTRATIONS OF 1-131 IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-90 JAN < 0.9 FEB < 1.0 MAR < 0.8 APR < 0.3 MAY < 6.1 (1)

JUN < 0.9 JUL < 1.0 AUG < 0.9 SEP < 0.8 OCT < 0.8 NOV < 0.5 DEC < 0.7 MEAN 0.8 +/- 0.4 TABLE C-1.2 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-13 CL-90 CL-91 CL-99 JAN-MAR < 173 170 < 171 < 172 APR-JUN < 184 183 < 182 < 183 JUL-SEP < 194 190 < 193 < 196 OCT-DEC < 131 129 < 128 < 127 MEAN 171 +/- 55 168 +/- 55 169 +/- 57 170 +/- 60 EXCEPTION RELATED VALUES ARE NOT INCLUDED IN THE MEAN AND 2 STANDARD DEVIATION CALCULATION (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C-1

aim m m s in - *a n ,I i I -i TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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-13 JAN < 53 < 60 <6 <6 < 12 <6 < 14 <6 < 10 <7 <6 < 30 <9 < 45 FEB < 63 < 93 <8 <7 < 17 < 10 < 26 < 10 < 13 < 14 <8 < 31 < 10 < 49 MAR < 52 62 + 46 <6 <7 < 15 <6 < 18 <8 < 11 <9 <7 < 32 < 13 < 44 APR < 39 < 82 <5 <5 <8 <5 < 11 <5 <9 <5 <5 < 23 <7 < 36 MAY < 42 < 60 <4 <4 < 10 <4 <9 <5 <7 <4 <4 < 44 < 15 < 31 JUN < 69 < 77 <7 <7 < 16 < 10 < 14 <8 < 16 <8 <7 < 38 < 12 < 49 JUL < 17 < 14 <1 <2 <4 <1 <3 <2 <3 <1 <2 < 20 <6 < 11 AUG < 13 < 26 <1 <1 <3 <1 <3 <2 <3 <1 <1 < 10 <3 < 11 SEP < 51 < 68 <6 <7 < 12 <6 < 10 <7 < 10 <5 <5 < 31 < 14 < 42 OCT < 37 < 78 <4 <4 <9 <5 <8 <4 <7 <4 <4 < 27 <9 < 28 NOV < 34 < 66 <4 <4 <8 <5 <8 <5 <7 <3 <4 < 30 < 10 < 25 DEC < 18 < 40 <2 <2 <4 <2 <4 <2 <4 <2 <2 < 11 <3 < 15 MEAN 41 +/- 36 60 +/- 47 4 +/- 4 5 +/- 4 10 +/- 9 5 +/- 6 11 +/- 14 5 +/- 5 8 +/- 8 5 +/- 7 5 +/- 4 27 +/- 20 9 +/- 8 32 +/- 28 CL-90 JAN < 50 < 93 <6 <6 < 13 <7 < 15 <7 < 11 <7 <6 < 29 < 10 < 40 FEB < 45 < 86 <5 <6 < 11 <6 < 13 <5 <9 <6 <6 < 24 <9 < 37 MAR < 50 < 91 <6 <6 < 11 <6 < 14 <6 < 10 <6 <6 < 24 < 10 < 39 APR < 46 < 60 <5 <6 < 12 <5 < 13 <5 <9 <6 <6 < 26 <9 < 42 MAY < 41 < 41 <4 <4 < 10 <4 <9 <5 <8 <4 <4 < 44 < 14 < 31 JUN < 70 < 129 <7 < 8 < 16 <8 < 17 <9 < 13 <8 <8 < 38 < 13 < 56 JUL < 17 < 14 <1 <2 <4 <1 <3 <2 <3 <1 <2 < 21 <7 < 11 AUG < 19 < 40 <2 <2 <5 <2 <4 <2 <4 <2 <2 < 14 <5 < 13 SEP < 52 < 139 <7 <6 < 13 <4 < 14 <6 < 12 <6 <6 < 33 < 12 < 41 OCT < 27 < 39 <3 <3 <7 <3 <6 <3 <5 <3 <3 < 20 <5 < 20 NOV < 27 < 57 <3 <3 <7 <3 <6 <3 <5 <3 <3 < 23 <6 < 22 DEC < 17 < 36 <2 <2 <4 <2 <3 <2 <3 <2 <2 < 10 <3 < 16 MEAN 38 +/- 34 69 +/- 78 4 +/- 4 4 +/- 4 9 +/- 8 4 +/- 4 10 +/- 10 5 +/- 4 8 +/- 7 4 +/- 5 4 +/- 4 25 +/- 19 8 +/- 7 31 +/- 28 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES

vm m g W s m W M-m M m s s n, TABLE C-1.3 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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-91 JAN < 70 < 127 <8 < 8 < 18 <8 < 18 <8 < 12 < 10 <7 < 35 < 13 < 53 FEB < 57 < 65 <6 <7 < 16 <8 < 15 <8 < 14 <8 <7 <34 < 12 < 50 MAR < 63 < 63 <6 <6 < 15 <7 < 16 <7 < 12 <8

<7 < 37 < 11 < 50 APR < 72 < 84 <8 <8 < 16 <8 < 19 <9 < 15 <8 <9 < 39 < 12 < 56 MAY < 21 < 32 <2 <2 <6 <2 <4 <3 <4 <2 <2 < 26 <9 < 15 JUN < 67 < 64 <7 <8 < 15 <7 < 19 <7 < 13 <8 <7 < 38 < 14 < 56 JUL < 14 < 11 <1 <2 <4 <2 <3 <2 <3 <1 <1 < 19 <7 <9 AUG < 43 < 79 <4 <5 < 10 <4 <8 <4 <7 <4 <4 < 35 < 10 < 29 SEP < 39 < 109 <5 <5 < 12 <4 < 10 <5 <9 <4 <5 < 26 <7 < 33 OCT < 35 < 74 <3 <4 <9 <4 <8 <4 <7 <3 <4 < 25 <9 < 29 NOV < 26 < 55 <3 <3 <7 <3 <6 <3 <5 <2 <3 < 20 <7 < 20 DEC < 20 < 41 <2 <2 <4 <2 <4 <2 <4 <2 <2 < 12 <4 < 17 MEAN 44 +/- 43 67 +/- 63 5 +/- 5 5 +/- 5 11 +/- 10 5 +/- 5 11 +/- 12 5 +/- 5 9 +/- 9 5 +/- 6 5 +/- 5 29 +/- 17 9 +/- 6 35 +/- 35 CL-99 JAN < 64 < 71 <9 <7 < 18 <8 < 21 <9 < 15 < 10 <9 < 41 < 13 < 57 FEB < 57 < 62 <8 <6 < 14 <:6 < 22 <8 < 12 < 13 <7 < 31 < 11 < 48 MAR < 59 < 80 <7 <7 < 15 <5 < 15 <6 < 13 <8 <8 < 32 < 12 < 53 APR < 65 74 +/- 66 <7 <8 < 15 <7 < 17 <8 < 15 <9 <8 < 34 < 14 < 50 MAY < 23 < 19 <2 <2 <6 <2 <5 <2 <4 <2 <2 < 27 <9 < 15 JUN < 61 < 75 <7 <7 < 16 <8 < 14 <7 < 13 <7 <7 < 37 < 12 < 48 JUL < 14 < 11 <1 <1 <3 <1 <2 <2 <3 <1 <1 < 19 <6 < 10 AUG <34 < 25 <4 <4 <:7 <4 <8 <4 <7 <3 <4 < 28 <8 < 28 SEP < 45 < 111 <6 <6 < 13 <4 < 11 <5 <8 <5 <5 < 41 < 11 < 34 OCT < 33 41 +/- 36 <3 <4 <8 <4 <7 <4 <6 <3 <4 < 24 <7 < 22 NOV < 28 < 25 <3 <3 <6 <3 <6 <3 <6 <3 <3 < 24 <7 < 23 DEC < 25 < 56 <3 <3 <6 <3 <6 <3 <5 <3 <3 < 16 <5 < 15 MEAN 42 +/- 37 54 +/- 61 5 +/- 5 5 +/- 5 11 +/- 10 5 +/- 4 11 +/- 13 5 +/- 5 9 +/- 9 6 +/- 7 5 +/- 5 30 +/- 16 9 +/- 6 34 t 34 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES

TABLE C-I1.1 CONCENTRATIONS OF GROSS BETA IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-14 JAN

2.1 FEB 2.1 +/- 1.2 MAR < 2.2 APR 2.2 +/- 1.4 MAY 2.0 +/- 1.4 JUN < 1.9 JUL

2.1 AUG 2.2 +/- 1.4 SEP < 2.0 OCT

2.0 NOV < 2.0 DEC < 1.7 MEAN 2.0 +/- 0.3 TABLE C-II.2 CONCENTRATIONS OF TRITIUM IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-14 JAN-MAR 130 APR-JUN 170 JUL-SEP 184 OCT-DEC 190 MEAN 169 +/- 54 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES C-4

a m m m n

m - - s " so TABLE C-11.3 CONCENTRATIONS OF GAMMA EMITTERS IN DRINKING WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/L +/- 2 SIGMA STC 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-14 JAN < 63 < 63 < 7 < 7 < 14 < 6 < 18 < 7 < 12 < 9 < 7 < 33 10 46 FEB < 62 < 57 < 7 < 7 < 16 < 6 < 16 < 8 < 12 < 9 < 7 < 33 13 55 MAR < 50 < 58 < 6 < 5 < 14 < 6 < 13 < 6 < 10 < 7 < 6 < 29 10 40 APR < 64 < 117 < 8 < 7 < 16 < 7 < 18 < 9 < 13 < 10 < 8 < 36 11 53 MAY < 28 < 43 < 3 < 3 < 7 < 3 < 6 < 3 < 5 < 3 < 3 < 32 11 20 JUN < 67 < 128 < 8 < 8 < 16 < 8 < 19 < 9 < 13 < 11 < 8 < 39 14 47 JUL < 13 < 26 < 1 < 1 < 3 < 1 < 2 < 1 < 3 < 1 < 1 < 17 6 8 AUG < 22 56 +/- 34 < 2 < 2 < 6 < 2 < 5 < 3 < 5 < 2 < 2 < 20 5 18 SEP < 53 119 +/- 57 < 6 < 6 < 12 < 5 < 10 < 6 < 10 < 5 < 6 < 34 12 37 OCT < 28 < 55 < 3 < 3 < 8 < 3 < 6 < 3 < 5 < 3 < 3 < 22 8 20 NOV < 36 < 63 < 3 < 3 < 8 < 3 < 7 < 5 < 7 < 3 < 3 < 26 9 26 DEC < 22 < 44 < 2 < 2 < 5 < 2 < 5 < 2 < 4 < 2 < 2 < 13 4 17 MEAN 42 +/- 39 69 +/- 66 5 +/- 5 5 +/- 5 10 +/- 9 4 +/- 4 10 +/- 12 5 +/- 5 8 +/- 8 5 +/- 7 5 +/- 5 28 +/- 17 9 +/- 6 32 +/- 32 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES

TABLE C-I1.1 CONCENTRATIONS OF TRITIUM IN GROUND WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION PERIOD CL-O7D CL-12R CL-12T JAN-MAR < 153 < 180 < 164 APR-JUN < 171 < 168 < 169 JUL-SEP < 166 < 167 < 162 OCT-DEC < 173 < 180 < 179 MEAN 166 +/- 18 174 +/- 14 169 +/- 15 C-6

a -m m nom- m ý as - - w " ammMs TABLE C-III.2 CONCENTRATIONS OF GAMMA EMITTERS IN GROUND WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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-07D MAR < 47 < 55 <6 <6 <13 <6 < 14 <6 <11 <6 <7 < 28 < 11 < 38 JUN < 37 < 37 <4 <4 <8 <5 <9 <5 <7 <4 <4 < 24 <8 < 28 SEP < 56 < 87 <4 <7 <13 '<4 < 13 <7 <11 <5 <6 < 35 < 11 < 38 DEC < 36 < 71 <4 <4 <10 <5 < 10 <5 <7 <4 <4 < 24 < 10 < 31 MEAN 44 +/- 19 62 +/- 43 4+/-2 5+/-3 11 +/- 4 5 +/- 1 11 +/- 5 6 +/- 2 9 +/- 4 5 +/- 2 5 +/- 3 27 +/- 10 10 +/- 3 34 +/- 10 CL-12R MAR < 73 < 79 <9 <8 <17 <9 < 27 < 10 < 13 < 13 <8 < 42 < 14 < 60 JUN < 57 < 119 <6 <6 <13 <<6 < 12 <7 < 11 <6 <6 < 36 < 11 < 47 SEP < 42 < 82 <4 <5 <12 <<5 < 10 <5 <9 <4 <4 < 28 <9 < 31 DEC < 37 < 87 <4 <5 <9 <6 < 11 <5 <9 <5 <4 < 29 < 12 < 31 MEAN 53 +/- 32 92 +/- 37 6+/-5 6+/-3 13+/-7 6 +/- 3 15 +/- 16 7 +/- 4 10 +/- 5 7 +/- 8 6 +/- 4 34 +/- 13 11 +/- 4 42 +/- 28 CL-12T MAR < 66 < 86 <7 <7 <16 <7 < 17 <8 <15 <10 <8 < 37 < 13 < 55 JUN < 60 < 100 <6 <7 <17 <7 < 16 <8 <11 <8 <7 < 37 < 13 < 45 SEP < 44 < 110 <5 <5 <12 <<5 < 13 <6 <11 <4 <5 < 33 < 14 < 39 DEC < 54 < 104 <5 <5 <11 <5 <9 <6 <11 <4 <5 < 34 <9 < 32 MEAN 56 +/- 19 100 +/- 20 6 +/- 2 6 +/- 2 14 +/- 6 6 +/- 2 14 +/- 8 7 +/- 2 12 +/- 4 6 +/- 6 6 +/- 3 35 +/- 4 12 +/- 4 43 +/- 20

. mmm nm-m m m mmm mmm m m TABLE C-IV.1 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES COLLECTED IN THE VICINITY 0 OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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-19 Bluegill 04/17/06 < 561 2640 +/- 839 < 67 < 66

133 < 59 < 153 <64 < 108 <77 <69 < 260

90 < 304 Carp 04/17/06 < 580 4010 +/- 711 < 65 < 60

132 < 59 < 126 <66 < 111 <63 <68 < 333 < 102

528 Channel Catfish 04/17/06 < 544 3790 +/- 949 < 71 < 72

167

71 < 172 < 66 < 147 < 78 < 65 < 337

81 < 392 Largemouth Bass 04/17/06 < 489 4890 +/- 768 < 60 < 55 < 121

55

143 < 60 < 112 < 66 < 63

263

74

300 Carp 10/09/06 < 179 3000 +/- 239 < 12 < 18

45 <11

28 < 21 < 32 < 12 < 12 < 799

230

75 Bluegill 10/09/06 < 237 2830 +/- 239 < 15 < 22

57

20 < 37 < 25 < 42 < 14 < 14 < 947

285

85 Channel Catfish 10/09/06 < 191 3470 +/- 225 < 14 < 19 < 53

13

29 < 21 < 36 < 12 < 12 < 845 < 248

77 Largemouth Bass 10/09/06 < 179 3420 +/- 383 < 13 < 19

53

16

28 < 19 < 37 < 12 < 13 < 809

276

64 MEAN 370 +/- 376 3506 +/- 1458 40 +/- 56 41 +/- 48 95 +/- 96 38 +/- 50 89 +/- 129 43 +/- 45 78 +/- 92 42 +/- 63 39 +/- 57 574 +/- 599 173 +/- 189 228 +/- 355 CL-105 Bluegill 04/17/06 < 511 3030 +/- 777 < 63 <63 < 115 < 63

144 <66 < 110 <70 <57 < 300

91 < 333 Carp 04/17/06 < 686 3060 +/- 805 < 76 < 79 < 176 < 76

184 < 82 < 145 < 82 < 80 < 404 < 121 < 463 Largemouth Bass 04/17/06 < 508 4640 +/- 808 < 61 < 61 < 132 < 66

138 < 67 < 104 < 63 < 65 < 250

106 < 328 White Crappie 04/17/06 < 453 4170 +/- 692 < 56 < 56 < 121 < 57 < 136 < 54 < 90 < 60 < 58 < 260

80

269 Crappie 10/09/06 < 432 5100 +/- 496 < 27 < 46 < 124 < 26 < 67 < 49 < 87 < 26 < 29 < 1890 < 628 < 153 0 Carp 10/09/06 < 448 3290 +/- 548 < 31 < 50 < 133 < 28 < 74 < 47 < 93 < 27 < 31 < 2010

684

155 Largemouth Bass 10/09/06 < 379 3630 +/- 426 < 24 < 38 < 99 < 24 < 57 < 49 <64 < 26 < 24 < 1760 < 568

140 Bluegill 10/09/06 < 406 3120 +/- 506 < 31 < 44 < 137 < 31 < 70 < 56 < 81 < 29 < 26 < 2140

607 < 185 MEAN 478 +/- 191 3755 +/- 1587 46 +/- 40 55 +/- 26 130 +/- 45 46 +/- 42 109 +/- 95 59 +/- 24 97 +/- 48 48 +/- 46 46 +/- 43 1127 +/- 1775 361 +/- 562 253 +/- 231

INDICATES CONTROL SAMPLE

I m = m n m m s m so an -.--

m m a m a m TABLE C-V.1 CONCENTRATIONS OF GAMMA EMITTERS IN SEDIMENT SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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-07B 04/17/06 < 165 6630 +/- 366 < 20 < 19 < 47 < 23 < 54 < 22 < 36 < 23 < 20 < 105 < 32 < 112 10/09/06 < 151 8020 +/- 302 < 14 < 16 < 38 < 18 < 32 < 18 < 29 < 13 < 15 < 167 < 50 < 95 MEAN 158 +/- 20 7325 +/- 1966 17 +/- 9 17 +/- 4 42 +/- 13 21 +/- 8 43 +/- 31 20 +/- 6 33 +/- 10 18 +/- 14 18 +/- 8 136 +/- 88 41 +/- 25 104 +/- 24 I.

TABLE C-VI.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I WEEK CL-02 CL-03 CL-04 CL-06 CL-i5 CL-94

-1 22 +/- 5 23 +/- 5 17 +/-4 18 +/- 4- 19 +/- 4 20 +/- 5 2 25 +/- 5 24 +/- 5 23 +/-5 29 +/- 5 25 +/- 5 25 +/- 5 3 26 +/- 5 22 +/-4 20 +/-4 22 +/- 4 22 +/-4 21 +/- 4 4 15 +/- 4 17 +/-4 21 +/-5 18 +/- 4 16 +/-4 17 +/-4 5 16 +/- 4 17 +/-4 16 +/-4 19 +/- 4 13 +/-4 15 +/-4 6 18 +/- 5 16 +/-4 16 +/-4 17+/- 4 21 +/-5 18 +/-5 7 12 +/- 4 14 +/-4 15 +/-4 13+/- 4 13 +/-4 14 +/-4 8 27 +/- 5 19 +/- 4 27 +/-5 19+/- 4 22 +/-5 22 +/-5 9 23 +/- 5 22 +/- 5 24 +/-5 23+/- 5 24 +/-5 26 +/-5 10 17 +/-4 17 +/- 4 19 +/-4 19+/- 4 18 +/- 4 20 +/-4 11 18 +/-4 15 +/- 4 18 +/-4 18+/- 4 15 +/- 4 17 +/-4 12 19 +/-4 15 +/- 4 19 +/-4 17+/- 4 17 +/-4 18 +/-4 13 11 +/-4 5+/-3 10 +/-4 10+/- 4 7+/-4 9+/-4 14 19 +/-4 22 +/-4 14 +/-4 16+/- 4 17 +/-4 15 +/-4 15 19 +/-5 15 +/-4 15 +/-4 16+/- 4 12 +/-4 19 +/-5 16 23 +/-5 18 +/-4 22 +/-4 22+/- 5 21 +/-4 22 +/-5 17 13 +/-4 10 +/-4 14 +/-4 12+/- 4 16 +/-4 13 +/-4 18 14 +/-4 16 +/-4 21 +/-5 12+/- 4 14 +/-4 14 +/-4 19 14 +/-4 12 +/-4 12 +/-4 14+/- 4 16 +/-4 13 +/-4 20 6+/-3 11 +/-4 7 +/-3 8+/- 4 5+/-3 8+/-4 21 13 +/-4 14 +/-4 11 ++/-4 13+/- 4 10 +/-4 15 +/-4 22 23 +/-4 19 +/-4 22 +/-4 20+/- 4 20 +/-4 17 +/-4 23 22 +/-4 21 +/- 4 15 +/-4 14+/- 4 14 +/-4 17 +/-4 24 11 +/-4 12 +/- 4 12 +/-4 14+/- 4 7+/-4 15 +/-4 25 22 +/-4 18 +/- 4 19 +/-4 23+/- 4 23 +/-4 20 +/-4 26 20 +/-4 18 +/- 4 18 +/-4 19+/- 4 17 +/-4 19 +/-4 27 26 +/-5 26 +/- 5 30 +/-5 22+/- 5 26 +/-5 29 +/-5 28 23 +/-5 19 +/- 4 20 +/-4 21+/- 4 20 +/-4 20 +/-4 29 31 +/-5 24 +/- 5 26 +/-5 28+/- 5 26 +/-5 32 +/-5 30 21 +/- 4 25 +/- 5 23 +/-4 24+/- 5 23 +/-4 31 23 +/- 4 19 +/- 4 18 +/-4 20+/- 4 19 +/-4 32 27 +/- 5 21 +/- 4 22 +/-4 26+/- 5 18 +/- 4 26 +/-5 33 18 +/- 4 18 +/- 4 17 +/-4 18+/- 4 18 +/- 4 16 +/- 4 34 21 +/- 4 24 +/- 5 21 +/-5 20+/- 4 19 +/- 4 20 +/- 4 35 22 +/- 5 25 +/- 5 26 +/-5 24+/- 5 26 +/- 5 25 +/- 5 36 13 +/- 4 16 +/- 4 19 +/-4 19+/- 4 16 +/- 4 19 +/- 4 37 24 +/- 5 24 +/-5 24 +/-5 28+/- 5 25 +/- 5 33 +/- 5 38 21 +/- 4 20 +/-4 19 +/-4 20+/- 4 18 +/- 4 21 +/- 4 39 16 +/- 3 15 +/-3 17 +/-3 17+/- 3 16 +/- 3 17 +/-3 40 21 +/- 4 26 +/-5 24 +/-5 25+/- 5 18 +/- 4 24 +/-5 41 19 +/- 4 21 +/-4 24 +/-5 22+/- 4 25 +/- 5 19 +/-4 42 16 +/- 4 13 +/- 4 15 +/-4 18+/- 4 17 +/-4 14 +/-4 43 20 +/- 4 21 +/- 4 19 +/-4 19+/- 4 20 +/-4 17 +/-4 44 23 +/- 4 15 +/- 4 16 +/-4 16+/- 4 17 +/-4 16 +/- 4 45 28 +/- 5 29 +/- 5 27 +/-5 25+/- 5 30 +/-5 28 +/- 5 46 29 +/- 5 23 +/- 4 22 +/-4 21+/- 4 23 +/-4 25 +/- 5 47 29 +/- 5 30 +/- 5 27 +/-5 30+/- 5 26 +/-5 26 +/- 5 48 19 +/- 4 18 +/- 4 22 +/-5 19+/- 4 16 +/-4 18 +/- 4 49 32 +/- 5 32 +/- 5 < 23 < 22 (1) < 22 (1) < 23 (1) 50 28 +/- 5 28 +/- 5 27 23+/- 7 27 +/-5 30 +/- 5 51 31 +/- 5 32 +/- 5 33 +/-5 36+/- 5 33 +/-5 30 +/- 5 52 37 +/- 6 31 +/- 5 33 +/-5 32+/- 5 34 +/-5 33 +/- 5 53 26 +/- 5 26 +/- 5 26 ++/-5 27+/- 5 18 +/-4 30 +/- 5 MEAN 21 +/- 12 20 +/- 12 20 +/- 11 20 +/- 11 19 +/- 12 20 +/- 12 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES, BUT NOT THE EXCEPTION RELATED VALUES (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION c- 1

TABLE C-VI.1 CONCENTRATIONS OF GROSS BETA IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF E-3 PCI/CU METER +/-2 SIGMA GROUP 11 GROUP III WEEK CL-01 CL-07 CL-08 CL-il1 1 20 +/-5 22 +/-5 17 +/-4 19+/-4 2 21 +/-4 22 +/-5 18 +/-4 24+/-5 3 22 +/-4 18 +/-4 17+/-4 23+/-5 4 18 +/-4 16 +/-4 15+/-4 17+/-4 5 16 +/-4 16 +/-4 15+/-4 23+/-5 6 19 +/- 5 21 +/- 5 18 +/-5 17 +/-5 7 14 +/-4 14 +/-4 12+/-4 13+/-4 8 20 +/-4 26 +/-5 23+/-5 23+/-5 9 27 +/-5 24 +/-5 25+/-5 25+/-5 10 19 +/-4 20 +/-4 16+/-4 17+/-4 11 20 +/-5 16 +/-4 15+/-4 13+/-4 12 20 +/-4 16 +/-4 17+/-4 20+/-4 13 12 +/-4 8 +/-4 10+/-4 10+/-4 14 19 +/-4 17 +/-4 14+/-4 16+/-4 15 18 +/-5 19 +/-5 14+/-4 17+/-5 16 22 +/- 4 23 +/- 5 19 +/-4 21 +/-4 17 9 +/-4 11 +/-4 7+/-4 13+/-4 18 18 +/-4 12 +/-4 18+/-4 19+/-5 19 13 +/-4 14 +/-4 13+/-4 15+/-4 20 8 +/- 4 9 +/- 4 7 +/-4 11 +/-4 21 9 +/-3 12 +/-4 12+/-4 16+/-4 22 19 +/- 4 21 +/- 4 21 +/-4 27 +/-5 23 15 +/-4 16 +/-4 17 +/-4 20+/-4 24 11 +/- 4 8 +/- 4 12 +/- 4 13 +/-4 25 19 +/-4 18 +/-4 22 +/-4 25+/-4 26 16 +/-4 16 +/-4 18 +/-4 21+/-4 27 24 +/-5 24 +/-5 23 +/-5 30+/-5 28 21 +/-4 18 +/-4 21 +/-5 19+/-4 29 30 +/-5 25 +/-5 34 +/-5 29+/-5 30 21 +/-4 21 +/-4 24 +/-5 24+/- 5 31 21 +/-4 20 +/-4 18 +/-4 23 +/-4 32 24 +/-5 22 +/-4 27+/-5 22+/- 4 33 18 +/-4 18 +/-4 20+/-4 23+/- 4 34 20 +/-4 15 +/-4 20+/-4 24+/- 5 35 25 +/-5 26 +/-5 26+/-5 30+/- 5 36 17 +/-4 18 +/-4 14+/-4 14 +/-4 37 26 +/-5 25 +/-5 25+/-5 29+/- 5 38 18 +/-4 19 +/-4 20+/-4 18 +/-4 39 18 +/-3 17 +/-3 17+/-3 17+/- 3 40 20 +/-4 22 +/-5 24+/-5 22+/- 5 41 15 +/-4 22 +/-4 24+/-5 22+/- 4 42 13 +/-4 16 +/-4 13+/-4 16+/- 4 43 19 +/-4 19 +/-4 21+/-4 17+/- 4 44 19 +/-4 14 +/-4 16 +/-4 16 +/-4 45 22 +/-4 26 +/-5 25 +/-5 29 +/-5 46 29 +/-5 24 +/-5 20 +/-4 29+/- 5 47 < 94 (1) 25 +/- 5 27 +/- 5 26 +/- 5 48 < 48 (1) 21 +/- 5 19 +/- 4 22 +/- 5 49 23 +/-9 30 +/-5 29 +/-5 30+/- 5 50 31 +/-5 27 +/-5 28 +/-5 20+/- 5 51 31 +/-5 26 +/-5 31 +/-5 31+/- 5 52 33 +/-5 32 +/-5 33 +/-5 39 +/-6 53 25 +/-5 24+/-S5 23+/-S5 29+/-S5 MEAN 20 +/- 11 19 +/- 11 19 +/- 12 21 +/- 12 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES, BUT NOT THE EXCEPTION RELATED VALUES

INDICATES CONTROL STATION (1)SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION c -11

m - - - - m m - - - ~ -

TABLE C-V.2 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, 2006 GROUP I - ON-SITE LOCATIONS

GROUP II- INTERMEDIATE DISTANCE ** GROUP III- CONTROL LOCATIONS ***

LOCATIONS COLLECTION MIN. MAX. MEAN+/- COLLECTION MIN. MAX. MEAN _ COLLECTION MIN. MAX. MEAN+/-

PERIOD 2SD PERIOD 2 SD PERIOD 2 SD 12/28/05 - 02/01/06 13 29 20 +/- 8 12/28/05 02/01/06 15 22 18 +/- 5 12/28/05 02/01/06 17 24 21 +/-6 02/01/06 - 03/01/06 12 27 19 +/- 9 02/01/06 03/01/06 12 27 20 +/- 10 02/01/06 03/01/06 13 25 20 +/-+11 03/01/06 - 03/29/06 5 20 15 +/-_8 03/01/06 03/29/06 8 20 16 +/- 8 03/01/06 03/29/06 10 20 15 _9 03/29/06 - 05/03/06 10 23 16 +/- 7 03/29/06 05/03/06 7 23 16 +/- 9 03/29/06 05/03/06 13 21 18 +/-6 05/03/06 - 05/31/06 5 23 13 +/- 10 05/03/06 05/31/06 7 21 13 +/- 10 05/03/06 05/31/06 11 27 17 +/- 13 05/31/06 - 06/28/06 7 23 17 +/-_8 05/31/06 06/28/06 8 22 16 +/- 7 05/31/06 06/28/06 13 25 20 +/-+10 06/28/06 - 08/02/06 18 32 24 +/- 8 06/28/06 08/02/06 18 34 23 +/- 9 06/28/06 08/02/06 19 30 25 _9 08/02/06 - 08/30/06 16 27 21 +/- 7 08/02/06 08/30/06 15 27 22 +/-+8 08/02/06 08/30/06 22 30 25 +/-7 08/30/06 - 09/27/06 13 33 20 +/- 9 08/30/06 09/27/06 14 26 19+/- 8 08/30/06 09/27/06 14 29 19 +/- 13 09/27/06 - 11/01/06 13 26 19 +/- 7 09/27/06 11/01/06 13 24 18+ 8 09/27/06 11/01/06 16 22 18 +/-6 11/01/06 - 11/29/06 16 30 25 +/- 9 11/01/06 11/29/06 19 29 24 +/-+6 11/01/06 11/29/06 22 29 26 _7 11/29/06 - 01/03/07 18 37 30 +/- 8 11/29/06 01/03/07 23 33 28 _+7 11/29/06 01/03/07 20 39 30

14 12/28/05 - 01/03/07 5 37 20 +/- 9 12/28/05 - 01/03/07 7 34 19 +/-_9 12/28/05 - 01/03/07 10 39 21 +/- 9

GROUP I LOCATIONS WITHIN 1 MILE OF CPS GROUP II LOCATIONS WITHIN 1-5 MILES OF CPS

- - GROUP III LOCATIONS GREATER THAN 5 MILES OF CPS

a m =m = m =- m m m-TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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-01 12/28/05 67 +/- 33 < 69 <4 <9 < 11 <9 < 34 <5 <3 < 17 < 17 03/29/06 101 +/- 40 < 44 <2 <4 <8 <3 < 17 <2 <2 <5 <7 06/28/06 86 +/- 41 < 21 <2 <6 <7 <8 < 21 <2 <2 < 11 < 11 09/27/06 51 +/- 28 < 31 <3 <3 <6 <4 < 20 <3 <3 <5 < 12 MEAN 76 +/- 44 41 +/- 42 3 +/- 2 5 + 6 8 +/- 4 6 +/- 6 23 +/- 15 3 +/- 3 2 +/- 1 10 +/- 12 12 + 8 CL-02 12/28/05 < 61 < 73 <3 <11 < 18 < 16 < 30 <6 < 36 < 40 03/29/06 84 +/- 46 < 36 <3 <3 <6 <6 < 22 <2 <7 <8 06/28/06 92 +/- 28 < 25 <2 <4 <5 <4 < 16 <2 < 11 < 10 09/27/06 73 +/- 18 < 45 <2 <3 <5 <3 < 19 <2 <4 < 10 MEAN 77 +/- 27 44 +/- 41 2 +/- 1 5 +/- 7 8 +/- 13 7 +/- 11 22 +/- 12 3 +/- 4 2 +/- 2 14 +/- 29 17 +/- 30 CL-03 12/28/05 < 70 < 62 <6 <9 < 12 < 15 < 33 <5 <4 < 24 < 21 03/29/06 101 +/- 40 26 +/- 26 <4 <4 <5 <5 < 22 <2 <2 <7 <9 06/28/06 100 +/- 41 < 43 <2 <5 <8 <8 < 18 <2 <2 < 16 < 13 09/27/06 48 +/- 20 < 34 <2 <3 <4 <3 < 20 <2 <2 <4 < 10 MEAN 80 +/- 51 41 +/- 31 4 +/- 4 5 +/- 5 7 +/- 7 8 +/- 11 23 +/- 13 3 +/- 3 3 +/- 2 13 +/- 18 13 +/- 10 CL-04 12/28/05 < 91 < 51 <3 <7 < 13 < 11 < 32 <5 <4 < 23 19 03/29/06 95 +/- 42 < 37 <3 <5 < 10 <6 < 28 <3 <2 < 10 12 06/28/06 119 +/- 41 < 30 <1 <4 <5 <6 < 12 <1 <1 < 10 10 09/27/06 54 +/- 18 < 42 <4 <3 <6 <3 < 19 <2 <2 <4 8 MEAN 90 +/- 54 40 +/- 17 3 +/- 2 5 +/- 3 8 +/- 8 6 +/- 7 23 +/- 18 3 +/- 3 2 +/- 2 12 +/- 16 12 +/- 10 CL-06 12/28/05 < 105 < 57 < 3 < 6 <8 < 15 < 27 < 5 <4 < 18 < 21 03/29/06 77 +/- 39 <75 <2 <7 <10 <6 <25 <2 <3 <11 <12 06/28/06 < 81 <34 < 2 <5 < 11 <7 < 17 <2 <2 < 15 < 14 09/27/06 71 +/- 22 <25 <2 <2 <3 <1 <14 <1 <1 <3 <6 MEAN 84 +/- 30 48 +/- 45 2 +/- 1 5 +/- 4 8 +/- 7 7 +/- 11 21 +/- 12 2 +/- 3 3 +/- 3 12 +/- 13 13 +/- 12 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES

TABLE C-VI.3 CONCENTRATIONS OF GAMMA EMITTERS IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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-07 12/28/05 < 100 < 77 <3 <8 < 18 < 11 < 33 <6 <5 < 20 < 19 03/29/06 98 +/- 42 < 66 <4 <5 < 14 <8 < 27 <4 <4 < 13 < 18 06/28/06 53 +/- 44 44 +/- 19 <2 <3 <8 <5 < 21 <2 <2 < 10 <8 09/27/06 65 +/- 18 < 40 <2 <3 <4 <3 < 23 <2 <2 <4 < 12 MEAN 79 +/- 48 57 +/- 35 3 + 2 5 +/- 4 11 +/- 12 7 +/- 7 26 +/- 11 3 + 3 3 + 3 12 +/- 13 14 +/- 10 CL-08 12/28/05 < 86 < 79 <4 < 10 < 15 < 11 < 42 <5 <4 < 22 < 23 03/29/06 74 +/- 28 < 50 <2 <4 <7 <4 < 22 <2 <2 <8 < 11 06/28/06 81 +/- 35 44 +/- 18 <2 <5 <8 <6 < 19 <2 <2 < 10 < 10 09/27/06 49 +/- 19 < 38 <3 <2 <4 <2 < 20 <2 <2 <3 <8 MEAN 73 +/- 32 52 +/- 37 3 +/- 2 5 +/- 6 8 +/- 9 6 +/- 8 26 +/- 22 3 +/- 3 2 +/- 2 11 +/- 16 13 +/- 14 CL-11* 12/28/05 < 83 < 61 4 <7 < 16 < 10 38 <5 <3 < 20 < 15 03/29/06 77 +/- 39 < 39 3 <3 <4 <5 14 <1 <2 <6 <9 06/28/06 62 +/- 37 < 20 2 <3 <6 <7 16 <1 <1 < 11 < 10 09/27/06 68 +/- 28 < 54 2 <3 <5 <4 22 <3 <3 <4 < 11 MEAN 73 +/- 19 44 +/- 37 3 +/- 2 4 + 4 8 +/- 11 6 +/- 5 22 +/- 22 3 + 3 2 + 1 10 +/- 14 11 +/- 6 CL-15 12/28/05 < 86 < 70 4 <6 < 13 < 12 < 37 <3 <3 < 15 < 15 03/29/06 82 + 30 < 51 1 <6 <8 <7 < 35 <3 <3 < 10 < 12 06/28/06 +

99 43 < 39 3 <6 <8 <9 < 20 <2 <2 < 15 < 14 09/27/06 _+

64 28 < 24 2 <3 <6 <3 < 28 <2 <2 <5 < 13 MEAN 83 + 29 46 +/- 40 2 +/- 2 5 +/- 3 8 +/- 6 8 +/- 8 30 +/- 16 3 + 1 3 _ 1 11 +/- 10 13 +/- 2 CL-94 12/29/04 < 77 < 74 <4 <8 < 13 < 11 < 26 <4 <3 < 15 < 14 03/30/05 86 +/- 35 < 48 <3 <4 <7 <6 < 20 <2 <2 <8 < 10 06/29/05 56 +/- 51 < 48 <2 <2 <7 <5 < 16 <2 <2 <11 <9 09/28/05 72 +/- 23 < 48 <4 <4 <6 <4 < 28 <3 <3 <5 < 13 MEAN 73 +/- 25 54 +/- 26 3 +/- 2 4 +/- 5 8 +/- 7 7 +/- 6 23 +/- 11 3 +/- 2 2 _ 1 10 +/- 9 12 +/- 5 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES

INDICATES CONTROL STATION

TABLE C-VII.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP I WEEK CL-02 CL-03 CL-04 CL-06 CL-15 CL-94 1 < 35 < 35 < 34 < 23 < 46 < 35 2 < 38 < 38 < 38 < 25 < 33 < 26 3 < 37 < 37 < 37 < 37 < 33 < 22 4 < 39 < 42 < 42 < 27 < 43 < 21 5 < 28 < 42 < 42 < 42 < 36 < 20 6 < 33 < 33 < 33 < 25 < 40 < 30 7 < 43 < 24 < 43 < 43 < 40 < 26 8 < 41 < 41 < 41 < 30 < 63 < 42 9 < 46 < 46 < 25 < 46 < 41 < 31 10 < 48 < 48 < 48 < 27 < 42 < 31 11 < 43 < 43 < 43 < 32 < 40 < 22 12 < 42 < 42 < 42 < 23 < 29 < 19 13 < 49 < 49 < 49 < 25 < 40 < 39 14 < 28 < 28 < 28 < 21 < 30 < 22 15 < 44 < 44 < 44 < 33 < 48 < 47 16 < 39 < 39 < 39 < 26 < 40 < 30 17 < 43 < 43 < 43 < 24 < 49 < 48 18 < 42 < 42 < 42 < 42 < 36 < 36 19 < 65 < 65 < 65 < 36 < 36 < 66 20 < 60 < 60 < 60 < 30 < 62 < 34 21 < 63 < 63 < 63 < 42 < 61 < 41 22 < 67 < 66 < 66 < 66 < 66 < 43 23 < 69 < 69 < 69 < 69 < 66 < 44 24 < 59 < 59 < 59 < 32 < 54 < 30 25 < 50 < 49 < 49 < 37 < 47 < 26 26 < 56 < 56 < 56 < 45 < 50 < 40 27 < 55 < 55 < 55 < 44 < 48 < 38 28 < 58 < 58 < 58 < 46 < 46 < 36 29 < 40 < 40 < 40 < 22 < 59 < 33 30 < 51 < 63 < 63 < 63 (1) < 49 31 < 35 < 47 < 47 < 47 < 46 < 25 32 < 41 < 23 < 41 < 41 < 36 < 28 33 < 36 < 36, < 36 < 35 < 57 < 45 34 < 25 < 25 < 26 < 13 < 22 < 15 35 < 45 < 44 < 44 < 35 < 52 < 41 36 < 22 < 54 < 23 < 12 < 68 < 67 37 < 35 < 35 < 35 < 28 < 38 < 21 38 < 61 < 61 < 61 < 40 < 60 < 59 39 < 33 < 33 < 33 < 33 < 34 < 34 40 < 64 < 64 < 64 < 64 < 65 < 65 41 < 61 < 61 < 61 < 61 < 59 < 59 42 < 67 < 66 < 66 < 66 < 58 < 58 43 < 46 < 46 < 46 < 46 < 67 < 66 44 < 49 < 49 < 48 < 49 < 49 < 48 45 < 65 < 65 < 65 < 65 < 32 < 47 46 < 38 < 38 < 38 < 38 < 36 < 36 47 < 64 < 64 < 63 < 64 < 45 < 57 48 < 45 < 45 < 45 < 45 < 42 < 21 49 < 18 < 18 < 86 (1) < 86 (1) < 94 (1) < 97 (1) 50 < 18 < 33 < 58 < 59 < 45 < 43 51 < 43 < 23 < 42 < 42 < 47 < 46 52 < 48 < 48 < 47 < 32 < 48 < 36 53 < 24 < 24 < 24 < 13 < 9.5 < 9.6 MEAN 45 +/- 27 46 +/- 27 47 +/- 25 39 +/- 30 46 +/- 25 38 +/- 28 EXCEPTION RELATED VALUES ARE NOT INCLUDED IN THE MEAN AND 2 STANDARD DEVIATION CALCULATION (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C -15

TABLE C-VII.1 CONCENTRATIONS OF 1-131 IN AIR IODINE SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF E-3 PCI/CU METER +/- 2 SIGMA GROUP 11 I GROUP III CL-0 1 CL-07 CL-08 CL-il1

35 < 49 < 45

46 2

38

35

33

33 3

19

32

33

33 4

42

42

42

42 5

42

36

36

36 6

33

39

39

39 7 *<43

40

40

40 8

41

62

62

62 9

46

41

31

41 10

48

41

41

41 11

43

40

40

40 12

43

28

28

28 13

49

26

39 < 40 14

28

30

30

31 15 < 44

47

26

47 16

39

40 < 40

40 17

43

48

48

32 18

42

36

36

27 19

65

65

65

65 20

60

62

62

62 21

63

61

61

61 22

51

65

65

65 23

52

66

66

67 24

59

54

54

54 25

51

47

47

46 26

56

50

50

50 27

55

48

48

48 28

58

45

45

45 29

41

59

59

59 30

64

61

62

61 31

47

45

45

45 32 < 41

36

36

36 33

23

56

55

56 34

25

22

21

22 35

44

52

50

52 36

21

22

66

67 37

35

37

37

37 38

61

47

59

59 39

22

33

33

33 40

51

65

36

65 41

49

32

59

59 42

37

58

58

32 43

26

36

66

66 44

38

26

48

48 45

43

47

47

47 46

21

29

36

36 47

744 (1)

58

57

57 48 < 225 (1)

41

41

41 49

27

16

21

20 50

34

33

42

42 51

43

37

46

46 52

48

48

48 *<48 53

24

10

10

10 MEAN 42 +/- 24 43 +/-27 45 +/-26 45 +/-27 EXCEPTION RELATED VALUES ARE NOT INCLUDED IN THE MEAN AND 2 STANDARD DEVIATION CALCULATION

INDICATES CONTROL STATION (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION C -16

TABLE C-VIII.1 CONCENTRATIONS OF 1-131 IN MILK SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA CONTROL FARM COLLECTION PERIOD CL-116

01/25/06

0.6 02/22/06

0.6 03/29/06 < 0.7 04/26/06 < 0.7 05/10/06 < 0.8 05/24/06 < 0.3 06/07/06 (1) 06/21/06 < 2.2 (1) 07/05/06 < 0.9 07/19/06 < 0.5 08/02/06

0.7 08/16/06

0.9 08/30/06 < 0.6 09/13/06 < 0.4 09/27/06 < 0.5 10/11/06 < 0.9 10/25/06 < 0.9 11/29/06 < 0.6 12/27/06 < 0.8 MEAN 0.7 +/- 0.3 EXCEPTION RELATED VALUES ARE NOT INCLUDED IN THE MEAN AND 2 STANDARD DEVIATION CALCULATION

INDICATES CONTROL STATION (1) SEE PROGRAM EXECEPTIONS SECTION FOR EXPLANATION C- 17

TABLE C-VIII.2 CONCENTRATIONS OF GAMMA EMITTERS IN MILK SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA STC 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" 01/25/06 < 79 1510 + 161 <8 <9 < 18 < 11 < 25 < 10 < 16 < 11 < 10 < 40 < 11 < 61 02/22/06 < 57 1290 152 <8 <7 < 19 <9 < 20 <8 < 11 <8 <8 < 28 < 10 < 50 03/29/06 < 88 1390 +/- 162 < 10 < 10 < 23 < 10 < 24 <9 < 17 < 11 < 11 < 43 < 14 < 66 04/26/06 < 45 1260 +/- 113 <6 <6 < 13 <7 < 15 <6 < 11 <6 <6 < 26 <9 < 38 05/10/06 < 83 1260 +/- 180 < 11 < 13 < 25 < 12 < 26 < 10 < 21 <11 < 10 < 51 < 14 < 79 05/24/06 < 81 1100 +/- 172 <9 < 10 < 23 < 11 < 24 < 11 < 14 <11 < 10 < 48 < 13 < 70 06/07/06 < 54 1180 +/- 96 <5 <7 < 15 <6 < 13 <6 < 11 <6 <5 < 49 < 15 < 40 06/21/06 < 86 1340 +/- 182 <9 < 10 < 25 < 11 < 29 < 11 < 18 < 10 < 12 < 48 < 13 < 70 07/05/06 < 100 1220 +/- 187 < 11 < 11 < 25 < 13 < 31 < 11 < 24 < 12 < 14 < 48 < 14 < 70 07/19/06 < 97 1440 +/- 183 < 11 < 10 < 25 < 13 < 22 < 10 < 19 < 13 < 10 < 47 < 14 < 79 08/02/06 < 61 1220 +/- 132 <6 <6 < 16 <7 < 18 <7 < 12 <7 <8 < 30 < 12 < 46 08/16/06 < 19 1210 +/- 50 <2 <2 <5 <2 <5 <2 <4 <2 <2 < 19 <5 < 14 08/30/06 < 70 1280 +/- 167 <7 <8 < 15 <8 < 18 <7 < 13 <8 <9 < 41 < 11 < 55 09/13/06 < 43 1060 +/- 140 <6 <6 < 14 <7 < 15 <5 < 10 <4 <5 < 28 <7 < 38 09/27/06 < 53 1090 +/- 131 <6 <7 < 12 <5 < 14 <5 <9 <5 <7 < 28 <9 < 45 00 10/11/06 < 40 1170 +/- 108 <4 <4 < 12 <5 <9 <5 < 10 <3 <4 < 38 < 15 < 25 10/25/06 < 52 1260 +/- 131 <6 <5 < 14 <5 < 13 <6 <8 <4 <5 < 37 <9 < 40 11/29/06 < 62 1020 +/- 138 <7 <7 < 15 <7 < 14 <7 < 11 <6 <7 < 51 < 13 < 44 12/27/06 < 30 1120 + 105 <4 <4 <9 <4 < 11 <4 <7 <4 <4 < 24 <7 < 27 MEAN 63 +/- 46 1233 +/- 257 7 +/- 5 7 +/- 6 17 +/- 12 8 t 6 18 +/- 14 8 +/- 5 13 +/- 10 7 +/- 6 8 +/- 6 38 t 21 11 +/- 6 50 +/- 37

INDICATES CONTROL STATION

. - = = m m = -= = = m m m = m = m =

TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS INVEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA STC COLLECTION BE-7 K-40 MN-54 CO-58 FE-59 CO-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 CE-144 PERIOD CL-114" 06/28/06 97 +/- 53 5700 +/- 175 <8 <9

21 <8

18 <9

16 < 55 <7 <8

91

30 < 49 Kale CL-114" 06/28/06 278 +/- 57 9560 +/- 167 <8 <9

22 <8

21 <9 *17 < 59 <8 <8 < 93

25

51 Swiss Chard CL-1 14" 06/28/06 145 +/- 65 4810 +/- 176 < 10 <11

27 < 10

25 <12

21

60 < 10 <10

107 <34

62 Lettuce CL-1 14" 07/26/06 171 + 41 2740 +/- 108 <4 <5

12 <4

10 <5 <9

29 <4 <5

50

16

27 Cabbage CL-114" 07/26/06 260 +/- 49 6710 +/- 148 <5 <6

16 <5

13 <6 < 11

40 <5 <5

62

18

32 Kale CL-1 14" 07/26/06 137 + 55 4480 +/- 146 <6 <6

16 <6

13 <7 <11 < 35 <5 <6

61

16

36 Swiss Chard CL-114" 08/30/06 520 +/- 91 4430 +/- 164 <4 <6

15 <4

10 <6 <11

60 <4 <4

156 < 45

24 Kale CL-1 14" 08/30/06 5440 +/- 1220 5750 +/- 1470 < 38 < 55

110 < 37

106 < 65 < 54

58 < 54 < 38 < 1560 < 597

233 Soybean Leaves CL-114" 08/30/06 271 +/- 63 4020 +/- 129 <3 <4 < 11 <3 <7 <4 <8

60 <3 <3 < 73

22

21 Swiss Chard CL-114" 09/27/06 1820 +/- 275 6780 +/- 425 <11 <11

26 <8

21 <12

21 < 57 <9 <11

101

28

78 Broadleaf Noxious Weed CL-114" 09/27/06 304 +/- 59 9380 +/- 206 <6 <7

20 <8

17 <7

12

32 <5 <6

56

16 < 33 Cabbage CL-114" 09/27/06 160 +/- 40 4390 +/- 111 <4 <5

12 <4

10 <5 <8

22 <4 <4

40

12 < 23 Swiss Chard MEAN* 800 +/- 3069 5729 +/- 4170 9 +/- 19 11 +/- 28 26 +/- 54 9 +/- 18 23 +/- 54 12 +/- 33 16 +/- 25 47 +/- 29 10 +/- 28 9 +/- 19 204 +/- 856 71 +/- 332 56 +/- 117

INDICATES CONTROL STATION

0 m = = = - m mm m m - m m - m m TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA STC 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-1 15 06/28/06 292 +/- 76 4280 +/- 204 <8 < 10

23 <8

19 < 10

18 < 57 <8 <8 < 97

30 < 44 Kale CL-115 06/28/06 390 +/- 65 4850 +/- 192 <10 <11

29 < 10

25 <11

20

60

10 < 10

100 <31 < 53 Rhubarb CL-1 15 06/28/06 365 +/- 66 2940 +/- 147 <9 < 10

22 <9

21 < 10

18

56

10 <9 < 95

30

52 Lettuce CL-115 07/26/06 85 +/- 41 2710 +/- 117 <5 <6 < 15 <5

12 <<6 <11 < 39 <5 <5

64

19

30 Cabbage CL-115 07/26/06 359 +/- 60 4270 +/- 129 <5 <5

14 <5 <11 <6

10

30 <4 <5 < 55

15

28 Kale CL-115 07/26/06 473 +/- 48 5290 +/- 118 <5 <6

14 <5 <11 <6

10 < 35 <4 <5 < 57

17

30 Swiss Chard CL-115 08/30/06 79 +/- 46 2530 +/- 114 <3 <4 < 13 <4 <9 <5 <8 < 59 <3 <4

72

19

27 Cabbage CL-115 08/30/06 473 +/- 45 5420 +/- 112 <2 <3 <8 <2 <6 <3 <5

51 <2 <2 < 59

15

14 Kale n CL-1 15 08/30/06 472 +/- 64 5440 +/- 136 <3 <4 < 10 <3 <7 <4 <7

56 <3 <3

64

18 *18 Swiss Chard CL-115 09/27/06 62 +/- 35 2340 +/- 96 <4 <5 <11 <4 *10 <5 <9

23 <4 <4 < 43 *13

26 Cabbage CL-115 09/27/06 282 +/- 63 5050 +/- 183 <7 <8 <19 <7 <18 <8 < 15

40 <6 <7 < 74

19 < 46 Kale CL-115 09/27/06 293 +/- 49 6370 +/- 161 <5 <7

16 <6

15 <7 <11

27 <5 <5

51

14 < 31 Swiss Chard MEAN* 302 +/- 306 4291 +/- 2699 6 +/- 5 7 +/- 5 16 +/- 12 6 +/- 5 14 +/- 12 7 +/- 5 12 +/- 10 44 +/- 27 5 +/- 5 6 +/- 5 69 +/- 38 20 +/- 13 33 +/- 25

- - - - - I m - - m m - - - - -

TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA STC 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 06/28/06 111 +/- 35 3260 +/- 109 < 6 < 6 < 16 < 6 < 15 < 7 < 12 < 37 < 6 < 6 < 60 < 19 < 37 Cabbage CL-117 06/28/06 398 +/- 58 5310 +/- 129 < 9 < 10 < 24 < 9 < 21 < 10 < 18 < 60 < 9 < 9 < 100 < 31 < 46 Lettuce CL-117 06/28/06 374 +/- 61 6650 +/- 191 < 10 < 11 < 28 < 10 < 26 < 12 < 20 < 56 < 10 < 10 < 98 < 29 < 53 Swiss Chard CL-117 07/26/06 88 +/- 44 2900 +/- 119 < 5 < 6 < 14 < 5 < 12 < 6 < 10 < 27 < 4 < 5 < 49 < 13 < 28 Cabbage CL-117 07/26/06 230 +/- 86 5810 +/- 205 < 8 < 8 < 22 < 7 < 18 < 9 < 16 < 49 < 7 < 8 < 86 < 24 < 46 Kale CL-117 07/26/06 334 +/- 44 5600 +/- 134 < 5 < 5 < 14 < 5 < 12 < 6 < 10 < 29 < 4 < 5 < 51 < 14 < 25 Swiss Chard CL-117 08/30/06 457 +/- 54 2640 +/- 100 < 3 < 3 < 8 < 3 < 6 < 3 < 6 < 55 < 2 < 3 < 61 < 20 < 14 Cabbage CL-117 08/30/06 445 +/- 43 5240 +/- 103 < 3 < 3 < 9 < 3 < 7 < 4 < 7 < 60 < 3 < 3 < 66 < 18 < 16 Kale CL-117 08/30/06 < 264 5300 +/- 833 < 11 < 18 < 32 < 15 < 37 < 11 < 23 < 23 < 14 < 19 < 378 < 159 < 75 Swiss Chard CL-117 09/27/06 268 +/- 55 4180 +/- 140 < 6 < 6 < 15 < 5 < 13 < 6 < 11 < 29 < 5 < 5 < 54 < 13 < 32 Cabbage CL-117 09/27/06 193 +/- 52 5690 +/- 159 < 6 < 7 < 17 < 6 < 14 < 7 < 12 < 38 < 5 < 6 < 62 < 16 < 43 Kale CL-117 09/27/06 141 +/- 42 6150 +/- 146 < 5 < 6 < 15 < 5 < 13 < 6 < 10 < 25 < 4 < 5 < 47 < 13 < 27 Swiss Chard MEAN* 275 +/- 255 4894 +/- 2651 6 +/- 5 7 +/- 8 18 +/- 14 7 +/- 7 16 +/- 17 7 +/- 5 13 +/- 11 41 + 29 6 +/- 7 7 + 9 93 +/- 183 31 +/- 82 37 + 34 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND POSITIVE VALUES

mm -ro - m no m -n -- - -

TABLE C-IX.1 CONCENTRATIONS OF GAMMA EMITTERS IN VEGETATION SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA STC 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-118 06/28/06 787 +/- 65 12500 +/- 205 < 9 < 10 < 26 < 9 < 23 < 10 < 18 < 59 < 8 < 8 < 99 < 30 < 45 Swiss Chard CL-118 06/28106 240 +/- 61 5790 +/- 212 < 8 < 8 < 20 < 8 < 17 < 9 < 16 < 53 < 7 < 7 < 87 < 25 < 41 Kale CL-118 06/28/06 468 +/- 54 5280 +/- 143 < 7 < 9 < 21 < 7 < 19 < 9 < 16 < 56 < 8 < 8 < 89 < 25 < 47 Lettuce CL-118 07/26/06 153 +/- 43 3600 +/- 139 < 5 < 6 < 14 < 5 < 12 < 6 < 11 < 31 < 5 < 5 < 51 < 16 < 30 Cabbage CL-118 07/26/06 393 +/- 90 4730 +/- 240 < 11 < 11 < 26 < 10 < 25 < 13 < 20 < 51 < 10 < 11 < 97 < 27 < 65 Kale CL-118 07/26/06 410 + 61 6460 +/- 166 < 5 < 6 < 16 < 7 < 14 < 6 < 10 < 32 < 5 < 5 < 54 < 16 < 28 Swiss Chard CL-118 08/30/06 78 +/- 49 2640 +/- 115 < 3 < 4 < 10 < 3 < 6 < 4 < 7 < 57 < 2 < 3 < 63 < 16 < 19 Cabbage CL-118 08/30/06 499 +/- 92 3990 +/- 177 < 5 < 7 < 19 < 5 < 12 < 7 < 13 < 59 < 5 < 5 < 188 < 55 < 27 Kale CL-118 08/30/06 144 +/- 34 4450 +/- 89 < 2 < 3 < 8 < 4 < 6 < 3 < 6 < 55 < 2 < 2 < 58 < 15 < 15 Swiss Chard I CL-118 09/27/06 410 + 69 5400 +/- 178 < 7 < 8 < 21 < 7 < 17 < 8 < 15 < 37 < 7 < 7 < 66 < 20 < 44 Cabbage CL-118 09/27/06 73 +/- 34 2880 +/- 99 < 4 < 4 < 11 < 4 < 9 < 5 < 8 < 24 < 4 < 4 < 42 < 11 < 26 Kale CL-118 09/27/06 278 +/- 58 5900 +/- 179 < 6 < 7 < 18 < 6 < 16 < 7 < 12 < 32 < 5 < 6 < 58 < 15 < 37 Swiss Chard MEAN* 328 +/- 418 5302 +/- 5130 6 +/- 5 7 +/- 5 17 +/- 12 6 +/- 4 15 +/- 12 7 +/- 5 13 +/- 9 45 +/- 26 6 +/- 5 6 + 5 79 +/- 78 22 +/- 24 35 +/- 28

TABLE C-IX.2 CONCENTRATIONS OF GAMMA EMITTERS IN GRASS SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA STO COLLECTION BE-7 K-40 MN-54 CO-58 FE-59 C0-60 ZN-65 NB-95 ZR-95 1-131 CS-134 CS-137 BA-140 LA-140 CE-144 PERIOD CL-01 05/10/06 763 +/-169 7140 +/-368 < 21 < 23 < 50 < 22 < 55 < 24 < 40 *58 *24 < 23 < 138

40 *137 05/24/06 470 +/-178 7740 +/-361 < 20 < 27 < 71 < 20 < 55 < 26 < 47

59 *24 < 20 < 435 *118 *155 06/07/06 759 +/-150 6950 +/-298 <5 <6 < 17 < 6 < 12 <7 < 13

59 < 5 *<5 < 81 *23

37 06/21/06 1390 +/-174 6640 +/-357 < 20 < 21 < 50 < 22 < 49 < 20 < 37

54

22 < 21 < 125

34 *126 07/05/06 1470 +/-113 < 565 < 15 < 15 < 34 < 15 < 35 < 15 < 25 *30 *16 *<15 < 76 *21 *107 07/19/06 753 +/-113 4180 +/-244 < 14 < 15 < 36 < 14 < 37 < 16 < 26 *50

16 < 14 < 107 *30

99 08/02/06 994 +/-92 4210 +/-179 < 5 <6 < 16 < 5 < 12 <7 < 11

55 < 5 *<5 < 78 *22

33 08/16/06 2220 +/-675 5390 +/-871 < 42 < 52 < 149 < 57 < 107 < 56 < 90

49 < 43 < 33 < 997 *371

228 08/30/06 1660 +/-100 5310 +/-191 <4 <5 < 13 <4 < 10 < 5 < 10

59 < 3 < 4 < 75 *20

24 09/13/06 1680 +/-201 4940 +/-378 < 10 < 11 < 26 < 10 < 23 < 11 < 19 *<54 <11 *<11 < 101 *16 *63 09/27/06 2000 +/-86 6340 +/-182 <7 <8 < 18 <7 < 17 < 8 < 14

21 < 6 <7 < 48 *14 *41 10/11/06 2050 +/-252 4290 +/-482 < 20 < 16 < 42 < 18 < 43 < 20 < 39

55 <19 < 21 < 118 *23 *138 10/25/06 3250 +/-150 7150 +/-190 < 7 < 11 < 34 <8 < 19 < 12 < 20 *40 < 7 *<7 < 447 *110 *50 S MEAN 1497 +/-1546 5450 +/-3834 15 +/-21 17 +/-25 43 +/-72 16 +/-28 36 +/-54 17 +/-27 30 +/-44 49 +/-24 16 +/-22 14+/-+17 217 +/-537 65 +/-196 95+/-+121 CL-02 05/10/06 1030 +/-140 4830 +/-312 < 19 < 19 < 43 < 18 < 47 < 20 < 35 *<51 < 22 < 19 < 118

34 *130 05/24/06 727 +/-231 5590 +/-342 < 25 < 32 < 84 < 26 < 64 < 33 < 59 (1) < 30 < 26 < 596 *158 *201 06/07/06 2150 +/-339 6740 +/-619 < 34 < 42 < 100 < 35 < 91 < 41 < 72 < 20 < 36 < 33 < 521 *149 *202 06/21/06 1100 +/-185 8310 +/-462 < 23 < 25 < 55 < 23 < 62 < 24 < 40 < 59 < 24 < 23 < 143

39 *148 07/05/06 2910 +/-239 6270 +/-420 < 29 < 29 < 65 < 30 < 70 < 28 < 47 < 57 < 31 < 30 < 140 *41 *218 07/19/06 1940 +/-154 6490 +/-276 < 12 < 13 < 29 < 12 < 29 < 14 < 24 < 43 < 12 < 12 < 89 *25 *83 08/02/06 1600 +/- 104 6810 +/- 197 < 5 < 6 < 16 < 5 < 12 <6 < 11 < 52 <4 *<5 < 76 *17

33 08/16/06 1460 +/-459 4970 +/-727 < 26 < 41 < 111 < 37 < 77 < 44 < 69 < 46 < 23 < 30 < 717 *243

205 08/30/06 900 +/-66 5290 +/-130 <3 <4 < 9 < 3 <7 < 4 <7 *<53 <3 *<3 < 60 *15 *19 09/13/06 2130 +/-272 3850 +/-392 < 13 < 15 < 29 < 16 < 33 *<15 < 25 < 60 < 11 *<15 < 101

33 *87 09/27/06 2210 +/-95 5840 +/-201 <7 <8 < 18 < 8 < 18 < 8 < 14 *<20 <6 <8 < 48

13

42 10/11/06 1550 +/- 90 3910 +/- 156 < 7 < 7 < 16 < 7 < 15 < 8 < 13 < 18 <6 *<7 < 42

10

50 10/25/06 2320 +/-118 5900 +/-159 < 6 <9 < 28 < 6 < 16 *<10 < 17 *<47 <6 <6 < 350

95

42 MEAN 1694 +/- 1296 5754 +/- 2463 16 +/- 21 19 +/- 26 46 +/- 68 17 + 24 42 +/- 57 20 +/- 27 33 + 45 44 +/- 31 17 +/- 23 17 +/- 22 231 +/- 468 67 +/- 146 112 +/- 150 THE MEAN AND 2 STANDARD DEVIATION VALUES ARE CALCULATED USING BOTH THE MDA AND 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, 2006 RESULTS IN UNITS OF PCI/KG WET +/- 2 SIGMA STC 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-08 05/10/06 402 +/-166 6660 +/-396 < 21 < 23 < 55 < 23 < 58 < 23 < 42

56

24 < 22 < 137

36

136 05/24/06 506 +/-181 7250 +/-374 < 24 < 30 < 78 < 23 < 56 < 32 < 54

42

25 < 22 < 502

146

144 06/07/06 674 +/-141 7650 +/-352 <7 <8 < 15 <7 < 15 <8 < 12

59 <5 <6 < 78

19

33 06/21/06 1050 +/-203 7800 +/-407 < 17 < 18 < 39 < 18 < 45 < 20 < 31

57

17 < 20 < 117

33

153 07/05/06 1410 +/-115 8750 +/-261 < 15 < 15 < 34 < 16 < 37 *<15 < 25

26

16 *<15 < 68

21

84 07/19/06 1200 +/-100 8640 +/-278 < 11 < 12 < 30 < 12 < 29 < 12 < 21

39 <11 < 12 < 82

20

80 08/02/06 276 +/-69 7960 +/-189 <5 <6 < 15 <5 < 12 <6 < 10 < 49 <4 *<5 < 69

17

32 08/16/06 970 +/-411 8690 +/-743 < 27 < 36 < 102 < 25 < 66 < 40 < 51

42 < 21 < 21 < 710

156

162 08/30/06 1670 +/-99 7330 +/-188 <4 <5 < 13 <5 <9 <5 <8 *60 <3 <4 < 74

17

24 09/13/06 1050 +/-145 4860 +/-337 < 10 < 12 < 29 < 10 < 25 < 12 < 21

47 < 10 *<11 < 89

22

62 09/27/06 1630 +/-83 8580 +/-190 <7 <7 < 19 <9 < 18 <8 < 13

25 <7 *<7 < 49

12

51 10/11/06 616 +/-105 3860 +/-282 < 11 < 10 < 25 < 10 < 26 < 12 < 18

22 <9 < 10 < 55

13

57 10/25/06 1750 +/-116 8820 +/-183 <6 <8 < 28 <6 < 16 *<9 < 16

44 <5 *<5 < 346

85

43 k) MEAN 1016 +/-1000 7450 +/-3082 13 +/-15 15 +/-19 37 +/-53 13+/-+14 32 +/-38 15 +/-21 25 +/-31 44 +/-26 12 +/-15 12 +/-14 183 +/-414 46 +/-101 82 +/-100 CL-1 16 05/10/06 1550 +/-147 6230 +/-299 < 17 < 17 < 40 < 18 < 41 < 19 < 32 < 58 < 18 < 17 < 113

34

121 05/24/06 828 +/-277 6220 +/-482 < 29 < 33 < 98 < 31 < 78 < 40 < 65 (1) < 33 < 29 < 574

178

187 06/07/06 1980 +/-189 5920 +/-354 < 16 < 20 < 50 < 15 < 42 < 21 < 37 <8 < 16 < 17 < 238

64

141 06/21/06 2120 +/- 183 7000 +/- 346 < 20 < 20 < 46 < 20 < 47 < 21 < 37 < 55 < 21 < 20 < 127

39

124 07/05/06 1700 +/-116 6490 +/-248 < 16 < 16 < 36 < 17 < 39 < 16 < 28 < 33 < 18 < 16 < 81

23

122 07/19/06 2150 +/- 173 7390 +/- 326 < 17 < 18 < 43 < 18 < 44 < 19 < 34 *<59 < 18 < 18 < 125

33

113 08/02/06 902 +/-92 6900 +/-210 <6 <6 < 17 <6 < 14 *<7 < 12 *<59 <5 *<5 < 84

22

38 08/16/06 992 +/-426 4460 +/-686 < 33 < 43 < 140 < 24 < 82 < 54 < 63 *<50 < 35 < 39 < 754

234

215 08/30/06 1120 +/-85 4890 +/-147 <4 <5 < 13 <4 <9 <5 <9 < 57 <4 *<4 < 73

19

26 09/13/06 1790 +/-81 7230 +/-188 <6 <7 < 18 <6 < 16 <8 < 13 < 32 <6 <6 < 59

16

45 09/27/06 1580 +/-97 6790 +/-236 <7 <8 < 18 <8 < 18 <8 < 15 < 24 <6 <8 < 50

14

45 10/11/06 1840 +/-300 6060 +/-524 < 22 < 21 < 56 < 23 < 56 < 26 < 41 < 60 < 21 < 21 < 137

42

176 10/25/06 2590 +/-167 7940 +/-223 <8 < 11 < 40 <9 < 22 < 13 < 21 *<55 <7 <7 < 476

123

49 MEAN 1626 +/- 1077 6425 +/- 1937 15 +/- 18 17 + 22 47 +/- 71 15 + 16 39 +/- 46 20 +/- 28 31 +/- 36 46 + 34 16 +/- 21 16 +/- 20 222 +/- 457 65 +/- 140 108 +/- 125

INDICATES CONTROL STATION (1) SEE PROGRAM EXCEPTIONS SECTION FOR EXPLANATION

TABLE C-X.1 QUARTERLY TLD RESULTS FOR CLINTON POWER STATION, 2006 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/-2 STANDARD DEVIATIONS STATION MEAN JAN - MAR APR - JUN JUL - SEP OCT - DEC CODE +/- 2 S. D.

CL-1 21.0 +/- 3.9 19.0 + 0.7 22.6 + 2.3 19.7 + 1.6 22.7 +/- 1.5 CL-2 21.3 +/- 3.5 19.3 + 1.7 22.1 + 2.5 20.5 + 0.5 23.3 + 1.5 CL-3 21.0 +/- 3.9 19.3 +/- 0.9 22.9 + 1.3 19.3 +/- 1.4 22.4 + 1.0 CL-4 20.8 +/- 3.9 19.0 +/- 0.9 22.5 + 0.5 19.2 + 1.4 22.4 +/- 3.6 CL-5 21.8 +/- 4.3 19.6 + 2.1 23.8 + 0.9 20.4 +/- 0.6 23.5 +/- 2.4 CL-6 19.2 +/- 4.1 17.2 + 1.0 20.6 + 1.0 17.8 +/- 0.9 21.3 +/- 2.1 CL-7 20.1 +/- 3.4 18.3 + 1.3 21.6 + 1.9 18.9 +/- 2.4 21.5 +/- 1.8 CL-8 21.0 +/- 3.9 19.3 +/- 1.2 23.3 + 1.9 19.4 +/- 1.4 21.8 +/- 1.6 CL-11 20.1 +/- 3.6 18.2 +/- 2.4 21.3 + 1.5 18.9 +/- 2.6 21.9 +/- 1.6 CL-15 19.3 +/- 3.1 18.2 +/- 1.7 20.5 +/- 1.1 17.8 +/- 1.5 20.8 +/- 2.1 CL-22 21.9 +/- 4.5 19.6 + 2.1 24.5 + 1.8 20.6 +/- 2.1 23.0 +/- 2.0 CL-23 21.2 +/- 4.1 19.0 + 1.1 23.3 + 2.8 19.9 +/- 1.2 22.6 +/- 0.9 CL-24 21.7 +/- 4.9 18.5 +/- 0.4 23.6 +/- 1.4 21.1 +/- 2.4 23.7 +/- 1.0 CL-33 21.5 +/- 3.9 19.6 +/- 1.5 23.6 +/- 1.9 20.1 +/- 1.3 22.8 +/- 1.8 CL-34 22.3 +/- 4.5 19.0 +/- 0.8 23.8 +/- 1.5 22.9 +/- 3.0 23.6 +/- 2.4 CL-35 20.8 +/- 3.9 18.3 +/- 1.0 22.9 +/- 1.1 20.4 +/- 3.2 21.6 +/- 3.4 CL-36 21.8 +/- 3.4 19.4 +/- 1.3 23.3 +/- 1.4 21.9 +/- 1.8 22.6 +/- 2.1 CL-37 20.8 +/- 3.8 18.8 +/- 0.9 22.9 +/- 2.8 19.6 +/- 3.1 21.7 +/- 1.1 CL-41 21.8 +/- 4.0 19.4 +/- 1.5 23.4 +/- 1.0 21.0 +/- 0.9 23.5 +/- 1.6 CL-42 21.5 +/- 3.5 19.0 +/- 0.9 22.5 +/- 2.5 21.6 +/- 2.9 22.8 +/- 2.2 CL-43 22.1 +/- 4.5 19.5 +/- 1.3 23.7 +/- 3.2 21.0 +/- 1.4 24.2 +/- 1.1 CL-44 21.6 +/- 3.5 20.0 +/- 2.1 22.9 +/- 3.0 20.2 +/- 1.7 23.3 +/- 1.5 CL-45 22.0 +/- 4.5 19.8 +/- 1.3 23.4 +/- 1.7 20.3 1 2.0 24.4 +/- 1.1 CL-46 20.5 +/- 2.4 18.7 +/- 1.0 20.9 +/- 2.0 20.8 +/- 5.6 21.4 +/- 1.1 CL-47 21.7 +/- 4.0 19.1 +/- 0.9 22.5 +/- 2.7 21.5 +/- 1.1 23.8 +/- 1.2 CL-48 21.0 +/- 3.5 19.0 +/- 1.6 22.6 +/- 1.9 20.0 +/- 1.4 22.3 +/- 1.0 CL-49 22.1 +/- 3.4 21.0 +/- 2.3 22.8 +/- 1.0 20.5 +/- 1.0 24.2 +/- 2.1 CL-51 22.2 +/- 3.3 20.4 +/- 1.7 23.1 +/- 1.2 21.2 +/- 1.0 24.0 +/- 3.2 CL-52 22.3 +/- 2.8 20.3 +/- 1.3 23.3 +/- 1.7 23.3 +/- 3.0 22.4 t 0.8 CL-53 20.6 +/- 3.7 19.0 +/- 2.3 22.0 +/- 0.9 18.9 +/- 1.4 22.3 +/- 0.7 CL-54 21.4 +/- 4.1 19.6 +/- 1.9 23.4 +/- 2.1 19.7 +/- 1.0 23.0 +/- 2.0 CL-55 21.5 +/- 3.3 19.9 +/- 1.3 23.0 +/- 2.3 20.3 +/- 1.8 22.8 +/- 1.5 CL-56 22.1 +/- 4.0 20.4 +/- 1.5 23.7 +/- 2.6 20.3 +/- 0.9 24.0 +/- 1.7 CL-57 22.4 +/- 4.1 20.3 +/- 1.7 24.4 +/- 1.1 21.0 +/- 0.9 23.9 +/- 2.1 CL-58 22.0 +/- 4.6 20.0 +/- 1.4 24.0 +/- 2.5 20.0 +/- 0.7 23.9 +/- 2.7 CL-60 21.8 +/- 3.3 20.2 +/- 2.0 23.1 +/- 1.2 20.5 +/- 3.1 23.3 +/- 0.9 CL-61 21.3 +/- 4.5 18.9 +/- 0.7 23.7 +/- 1.2 20.0 +/- 2.3 22.7 +/- 1.9 CL-63 19.8 +/- 3.8 19.2 +/- 2.1 21.4 +/- 1.8 17.3 +/- 0.9 21.1 +/- 1.2 CL-64 21.5 +/- 4.4 19.9 +/- 2.2 23.4 +/- 1.2 19.3 +/- 1.4 23.3 +/- 0.7 CL-65 21.6 +/- 2.8 20.1 +/- 1.7 23.0 +/- 1.7 20.8 +/- 2.3 22.6 +/- 1.6 CL-74 19.5 +/- 4.0 17.6 +/- 0.6 21.1 +/- 1.7 18.0 +/- 1.4 21.4 +/- 2.3 CL-75 21.6 +/- 2.6 20.4 +/- 2.2 23.2 +/- 2.4 20.7 +/- 1.2 22.1 +/- 1.1 CL-76 21.6 +/- 3.1 19.8 +/- 2.1 23.3 +/- 2.5 20.8 +/- 0.6 22.4 +/- 1.5 CL-77 20.8 +/- 4.5 18.2 +/- 1.2 22.9 +/- 2.4 19.6 +/- 0.6 22.4 +/- 0.8 CL-78 22.2 +/- 4.8 19.4 +/- 1.0 24.2 +/- 1.1 21.0 +/- 2.2 24.2 +/- 1.5 CL-79 21.3 +/- 3.9 19.2 +/- 1.7 22.8 +/- 1.9 20.1 +/- 1.1 23.1 +/- 1.8 CL-80 21.2 +/- 4.0 19.3 +/- 1.4 23.4 +/- 1.0 19.7 +/- 1.6 22.3 +/- 1.1 CL-81 20.9 +/- 4.4 18.4 +/- 1.7 23.2 +/- 1.5 19.8 +/- 1.7 22.2 +/- 1.6 CL-84 21.2 +/- 3.4 19.3 +/- 1.3 23.3 +/- 1.9 20.5 +/- 1.5 21.8 +/- 1.2 CL-90 19.5 +/- 6.2 16.7 +/- 1.0 20.4 +/- 1.4 17.4 +/- 1.1 23.5 +/- 5.2 CL-91 20.8 +/- 4.5 18.6 +/- 1.0 23.8 +/- 3.0 19.7 +/- 1.4 21.2 +/- 2.0 CL-97 22.3 +/- 4.4 20.4 +/- 0.8 24.9 +/- 1.4 20.5 +/- 0.8 23.3 +/- 1.6 CL-99 18.2 +/- 3.9 16.4 +/- 1.5 19.9 +/- 1.8 16.6 +/- 1.1 19.8 +/- 0.9 CL-114 20.4 +/- 4.6 17.9 +/- 1.2 22.9 +/- 2.9 19.0 +/- 3.6 21.7 +/- 1.0 C - 25

TABLE C-X.2 MEAN QUARTERLY TLD RESULTS FOR THE INNER RING, OUTER RING, SPECIAL INTEREST, SUPPLEMENTAL AND CONTROL LOCATIONS FOR CLINTON POWER STATION, 2006 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER +/- 2 STANDARD DEVIATIONS OF THE STATION DATA STATION INNER RING OUTER RING SPECIAL INTEREST SUPPLEMENTAL CONTROL CODE +/-2S.D. +/-2S.D. +/-2S.D. +/-2S.D.

JAN-MAR 19.2 +/- 0.9 19.6 +/- 1.4 19.6 +/- 2.3 18.5 +/- 2.3 18.2 +/- 2.4 APR-JUN 23.0 +/- 1.8 23.3 +/- 1.2 22.8 +/- 1.6 22.3 +/- 3.0 21.3 + 1.5 JUL-SEP 20.6 +/- 2.4 20.4 +/- 2.0 20.0 +/- 2.2 19.1 +/- 2.5 18.9 + 2.6 OCT-DEC 22.9 +/- 1.9 23.1 +/- 1.5 22.7 +/- 2.1 22.0 +/- 2.1 21.9 +/- 1.6 TABLE C-X.3

SUMMARY

OF THE AMBIENT DOSIMETRY PROGRAM FOR CLINTON POWER STATION, 2006 RESULTS IN UNITS OF MILLI-ROENTGEN/QUARTER LOCATION SAMPLES PERIOD PERIOD PERIOD MEAN PRE-OP MEAN, ANALYZED MINIMUM MAXIMUM +/- 2 S. D. + 2 S. D.. ALL LOCATIOI S.D. ALL LOCATIOt INNER RING 64 17.3 24.5 21.4 +/- 3.7 OUTER RING 64 18.2 24.4 21.6 +/- 3.6 18.0 +/- 2.4 SPECIAL 28 17.6 24.2 21.3 +/- 3.6 SUPPLEMENT 56 16.4 24.9 20.5 +/- 4.2 CONTROL 4 18.2 21.9 20.1 +/- 3.6 THE PRE-OPERATIONAL MEAN WAS CALCULATED FROM MONTHLY TLD READINGS MAY 1980 - FEBRUARY 27, 1987.

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-15, CL-33, CL-84 CL-90, CL-91, CL-97, CL-99, CL-114 CONTROL STATION - CL-i 1 C - 26

TABLE C-XI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 SURFACE WATER (TRITIUM LIQUID SCINTILLATION)

COLLECTION PERIOD CL-13 CL-90 CL-91 CL-99 JAN-MAR 12/28/05 -03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 APR-JUN 04/26/06 - 06/28/06 04/26/06 - 06/28/06 04/26/06 - 06/28/06 04/26/06 - 06/28/06 JUL-SEP 07/26/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 OCT-DEC 10/25/06 - 12/27/06 09/27/06 - 12/27/06 09/27/06 - 12/27/06 09/27/06 - 12/27/06 SURFACE WATER (1-131 (CL-90 only) & GAMMA SPECTROSCOPY)

COLLECTION PERIOD CL-13 CL-90 CL-91 CL-99 JAIN 12I/28/05 - 01/25/06 12/28/05 - 01/25/06 12/28/05 - 01/25/06 12/28/05 - 01/25/06 FEB 01/25/06 - 02/22/06 0 1/25/06 - 02/22/06 01/25/06 - 02/22/06 01/25/06 - 02/22/06 MAR 02/22/06 - 03/29/06 02/22/06 - 03/29/06 02/22/06 - 03/29/06 02/22/06 - 03/29/06 APR 03/29/06 - 04/26/06 03/29/06 - 04/26/06 03/29/06 - 04/26/06 03/29/06 - 04/26/06 MAY 04/26/06 - 05/31/06 04/26/06 - 05/31/06 04/26/06 - 05/31/06 04/26/06 - 05/31/06 JUN 05/31/06 - 06/28/06 05/31/06 - 06/28/06 05/31/06 - 06/28/06 05/31/06 - 06/28/06 JUL 06/28/06 - 07/26/06 06/28/06 - 07/26/06 06/28/06 - 07/26/06 06/28/06 - 07/26/06 AUG 07/26/06 - 08/30/06 07/26/06 - 08/30/06 07/26/06 - 08/30/06 07/26/06 - 08/30/06 SEP 08/30/06 - 09/27/06 08/30/06 - 09/27/06 08/30/06 - 09/27/06 08/30/06 - 09/27/06 OCT 09/27/06 - 10/25/06 09/27/06 - 10/25/06 09/27/0 6 - 10/25/06 09/27/06 - 10/25/06 NOV 10/25/06 - 11/29/06 10/25/06 - 11/29/06 10/25/06 - 11/29/06 10/25/06 - 11/29/06 DEC 11/29/06 - 12/27/06 11/29/06 - 12/27/06 11/29/06 - 12/27/06 11/29/06 - 12/27/06 DRINKING WATER (TRITIUM)

COLLECTION PERIOD CL-14 JAN-MAR 12/28/05 - 03/29/06 APR-JUN 04/26/06 - 06/28/06 JUL-SEP 06/28/06 - 09/27/06 OCT-DEC 09/27/06 - 12/27/06 DRINKING WATER (GROSS BETA & GAMMA SPECTROSCOPY)

COLLECTION PERIOD CL-14 JAN 12/28/05 - 01/25/06 FEB 01/25/06 - 02/22/06 MAR 02/22/06 - 03/29/06 APR 03/29/06 - 04/26/06 MAY 04/26/06 - 05/31/06 JUN 05/31/06 - 06/28/06 JUL 06/28/06 - 07/26/06 AUG 07/26/06 - 08/30/06 SEP 08/30/06 - 09/27/06 OCT 09/27/06 - 10/25/06 NOV 10/25/06 - 11/29/06 DEC 11/29/06 - 12/27/06 C -27

TABLE C-XI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 GROUND WATER (TRITIUM LIQUID SCINTILLATION AND GAMMA SPECTROSCOPY)

COLLECTION PERIOD CL-07D CL-12R CL-12T JAN-MAR 3/29/2006 3/29/2006 3/29/2006 APR-JUN 6/28/2006 6/28/2006 6/28/2006 JUL-SEP 9/27/2006 9/27/2006 9/27/2006 OCT-DEC 12/27/2006 12/27/2006 12/27/2006 AIR PARTICULATE (GAMMA SPECTROSCOPY)

COLLECTION CL-01 CL-02 CL-03 CL-04 CL-06 PERIOD JAN-MAR 12/28/05 - 03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 APR-JUN 03/29/06 - 06/28/06 03/29/06 - 06/28/06 03/29/06 - 06/28/06 03/29/06 - 06/28/06 03/29/06 - 06/28/06 JUL-SEP 06/28/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 OCT-DEC 09/27/06 - 01/03/07 09/27/06 - 01/03/07 09/27/06 - 01/03/07 09/27/06 - 01/03/07 09/27/06 - 01/03/07 AIR PARTICULATE (GAMMA SPECTROSCOPY)

COLLECTION CL-07 CL-08 CL-11 CL-15 CL-94 PERIOD JAN-MAR 12/28/05 - 03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 12/28/05 - 03/29/06 APR-JUN 03/29/06 - 06/28/06 03/29/06 - 06/28/06 03/29/06 - 06/28/06 03/29/06 - 06/28/06 03/29/06 - 06/28/06 JUL-SEP 06/28/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 06/28/06 - 09/27/06 OCT-DEC 09/27/06 - 01/03/07 09/27/06 - 01/03/07 09/27/06 - 01/03/07 09/27/06 - 01/03/07 09/27/06 - 01/03/07 C - 28

TABLE C-XI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 AIR PARTICULATE (GROSS BETA & 1-131)

COLLECTION CL-01 CL-02 CL-03 CL-04 CL-06 PERIOD 12LID IU+U ILI2b/Ut) - U I/U4/Ub ILI:ed/Ub - Ui/U4/Ub 12/Zd/U!) - UI/U4/Ub 12/2/JiUb - U1/U4/Uti 01/04/06 - 01/11/06 01/04/06 - 01/11/06 01/04/06 - 01/11/06 01/04/06 - 01/11/06 01/04/06 - 01/11/06 01/11/06 - 01/18/06 01/11/06 - 01/18/06 01/11/06 - 01/18/06 01/11/06 - 01/18/06 01/11/06 - 01/18/06 01/18/06 - 01/25/06 01/18/06 - 01/25/06 01/18/06 -01 /25/06 01/18/06 - 01/25/06 01 /18/06 - 01/25/06 01/25/06 - 02/01/06 01/25/06 - 02/01/06 01/25/06 - 02/01/06 01/25/06 - 02/01/06 01/25/06 - 02/01/06 02/01/06 - 02/08/06 02/01/06 - 02/08/06 02/01/06 - 02/08/06 02/01/06 - 02/08/06 02/01/06 - 02/08/06 02/08/06 - 02/15/06 02/08/06 - 02/15/06 02/08/06 - 02/15/06 02/08/06 - 02/15/06 02/08/06 - 02/15/06 02/15/06 - 02/22/06 02/15/06 - 02/22/06 02/15/06 - 02/22/06 02/15/06 - 02/22/06 02/15/06 - 02/22/06 02/22/06 - 03/01/06 02/22/06 - 03/01/06 02/22/06 - 03/01/06 02/22/06 - 03/01/06 02/22/06 - 03/01/06 03/01/06 - 03/08/06 03/01/06 - 03/08/06 03/01/06 - 03/08/06 03/01/06 - 03/08/06 03/01/06 - 03/08/06 03/08/06 - 03/15/06 03/08/06 - 03/15/06 03/08/06 - 03/15/06 03/08/06 - 03/15/06 03/08/06 - 03/15/06 03/15/06 - 03/22/06 03/15/06 - 03/22/06 03/15/06 - 03/22/06 03/15/06 - 03/22/06 03/15/06 - 03/22/06 03/22/06 - 03/29/06 03/22/06 - 03/29/06 03/22/06 - 03/29/06 03/22/06 - 03/29/06 03/22/06 - 03/29/06 03/29/06 - 04/05/06 03/29/06 - 04/05/06 03/29/06 - 04/05/06 03/29/06 - 04/05/06 03/29/06 - 04/05/06 04/05/06 - 04/12/06 04/05/06 - 04/12/06 04/05/06 - 04/12/06 04/05/06 - 04/12/06 04/05/06 - 04/12/06 04/12/06 - 04/19/06 04/12/06 - 04/19/06 04/12/06 - 04/19/06 04/12/06 - 04/19/06 04/12/06 - 04/19/06 04/19/06 - 04/26/06 04/19/06 - 04/26/06 04/19/06 - 04/26/0 6 04/19/06 - 04/26/06 04/19/06 - 04/26/06 04/26/06 - 05/03/06 04/26/06 - 05/03/06 04/26/06 - 05/03/06 04/26/06 - 05/03/06 04/26/06 - 05/03/06 05/03/06 - 05/10/06 05/03/06 - 05/10/06 05/03/06 - 05/10/06 05/03/06 - 05/10/06 05/03/06 - 05/10/06 05/10/06 - 05/17/06 05/10/06 - 05/17/06 05/10/06 - 05/17/06 05/10/06 - 05/17/06 05/10/06 - 05/17/06 05/17/06 - 05/24/06 05/17/06 - 05/24/06 05/17/06 - 05/24/06 05/17/06 - 05/24/06 05/17/06 - 05/24/06 05/24/06 - 05/31/06 05/24/06 - 05/31/06 05/24/06 - 05/31/06 05/24/06 - 05/31/06 05/24/06 - 05/31/06 05/31/06 - 06/07/06 05/31/06 - 06/07/06 05/31/06 - 06/07/06 05/31/06 - 06/07/06 05/31/06 - 06/07/06 06/07/06 - 06/14/06 06/07/06 - 06/14/06 06/07/06 - 06/14/06 06/07/06 - 06/14/06 06/07/06 - 06/14/06 06/14/06 - 06/21/06 06/14/06 - 06/21/06 06/14/06 - 06/21/06 06/14/06 - 06/21/06 06/14/06 - 06/21/06 06/21/06 - 06/28/06 06/21/06 - 06/28/06 06/21/06 - 06/28/06 06/21/06 - 06/28/06 06/21/06 - 06/28/06 06/28/06 - 07/05/06 06/28/06 - 07/05/06 06/28/06 - 07/05/06 06/28/06 - 07/05/06 06/28/06 - 07/05/06 07/05/06 - 07/12/06 07/05/06 - 07/12/06 07/05/06 - 07/12/06 07/05/06 - 07/12/06 07/05/06 - 07/12/06 07/12/06 - 07/19/06 07/12/06 - 07/19/06 07/12/06 - 07/19/06 07/12/06 - 07/19/06 07/12/06 - 07/19/06 07/19/06 - 07/26/06 07/19/06 - 07/26/06 07/19/06 - 07/26/06 07/19/06 - 07/26/06 07/19/06 - 07/26/06 07/26/06 - 08/02/06 07/26/06 - 08/02/06 07/26/06 - 08/02/06 07/26/06 - 08/02/06 07/26/06 - 08/02/06 08/02/06 - 08/09/06 08/02/06 - 08/09/06 08/02/06 - 08/09/06 08/02/06 - 08/09/06 08/02/06 - 08/09/06 08/09/06 - 08/16/06 08/09/06 - 08/16/06 08/09/06 - 08/16/06 08/09/06 - 08/16/06 08/09/06 - 08/16/06 08/16/06 - 08/23/0 6 08/16/06 - 08/23/06 08/16/06 - 08/23/06 08/16/06 - 08/23/06 08/16/06 - 08/23/06 08/23/06 - 08/30/06 08/23/06 - 08/30/06 08/23/06 - 08/30/06 08/23/06 - 08/30/06 08/23/06 - 08/30/06 08/30/06 - 09/06/06 08/30/06 - 09/06/06 08/30/06 - 09/06/06 08/30/06 - 09/06/06 08/30/06 - 09/06/06 09/06/06 - 09/13/06 09/06/06 - 09/13/06 09/06/06 - 09/13/06 09/06/06 - 09/13/06 09/06/06 - 09/13/06 09/13/06 - 09/20/06 09/13/06 - 09/20/06 09/13/06 - 09/20/06 09/13/06 - 09/20/06 09/13/06 - 09/20/06 09/20/06 - 09/27/06 09/20/06 - 09/27/06 09/20/06 - 09/27/06 09/20/06 - 09/27/06 09/20/06 - 09/27/06 09/27/06 - 10/04/06 09/27/06 - 10/04/06 09/27/06 - 10/04/06 09/27/06 - 10/04/06 09/27/06 - 10/04/06 10/04/06 - 10/11/06 10/04/06 - 10/11/06 10/04/06 - 10/11/06 10/04/06 - 10/11/06 10/04/06 - 10/11/06 10/11/06 -10/18/06 10/11/06 - 10/18/06 10/11/06 - 10/18/06 10/11/06 - 10/18/06 10/11/06 - 10/18/06 10/18/06 - 10/25/06 10/18/06 - 10/25/06 10/18/06 - 10/25/06 10/18/06 - 10/25/06 10/18/06 - 10/25/06 10/25/06 - 11/01/06 10/25/06 - 11/01/06 10/25/06 - 11/01/06 10/25/06 - 11/01/06 10/25/06 -11/01/06 11/01/06 - 11/08/06 11/01/06 -11/08/06 11/01/06 - 11/08/06 11/01/06 - 11/08/06 11/01/06 - 11/08/06 11/08/06 - 11/15/06 11/08/06 - 11/15/06 11/08/06 - 11/15/06 11/08/06 - 11/15/06 11/08/06 - 11/15/06 11/15/06 -11/22/06 11/15/06 -11/22/06 11/15/06 - 11/22/06 11/15/06 -11/22/06 11/15/06 -11/22/06 11/22/06 - 11/29/06 11/22/06 - 11/29/06 11/22/06 - 11/29/06 11/22/06 - 11/29/06 11/22/06 - 11/29/06 11/29/06 - 12/06/06 11/29/06 - 12/06/06 11/29/06 - 12/06/06 11/29/06 - 12/06/06 11/29/06 - 12/06/06 12/06/06 - 12/13/06 12/06/06 - 12/13/06 12/06/06 - 12/13/06 12/06/06 - 12/13/06 12/06/06 - 12/13/06 12/13/06 - 12/20/06 12/13/06 - 12/20/06 12/13/06 - 12/20/06 12/13/06 - 12/20/06 12/13/06 - 12/20/06 12/20/06 - 12/27/06 12/20/06 - 12/27/06 12/20/06 - 12/27/06 12/20/06 - 12/27/06 12/20/06 - 12/27/06 12/27/06 - 01/03/07 12/27/06 - 01/03/07 12/27/06 - 01/03/07 12/27/06 - 01/03/07 12/27/06 - 01/03/07 C -29

TABLE C-XI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 AIR PARTICULATE (GROSS BETA & 1-131)

COLLECTION CL-07 CL-08 CL-li1 CL-15 CL-94 PERIOD ILILoIUb - U IIU'+UO I Z/Zb/UD - UII /U4/Ub I4!4Q~u&, - U i!Uvt/uu 2 01/04/06 - 01/11/06 01/04/06 - 01/11/06 010/6- 01/11/06v 01/04/06 - 01/11/06U 01/04/06 - 01/11/06 3 01/11/06 - 01/18/06 01/11/06 - 01/18/06 01/04/06 - 01/11/06 01/11/06 - 01/18/06 01/11/06 - 01/18/06 4 01/18/06 - 01/25/06 01/18/.06 - 01/25/06 01/11/06 - 01/18/06 01/18/06 - 01/25/06 01/18/06 - 01 /25/06 5 01 /25/06 -02/01/06 01/25/06 - 02/01/06 01/25/06 - 02/01/06 01/25/06 - 02/01/06 0 1/25/06 - 02/01/06 6 02/01/06 - 02/08/06 02/01/06 - 02/08/06 02/01/06 - 02/08/06 02/01/06 - 02/08/06 02/01/06 - 02/08/06 7 02/08/06 - 02/15/06 02/08/06 - 02/15/06 02/08/06 - 02/15/06 02/08/06 - 02/15/06 02/08/06 - 02/15/06 8 02/15/06 - 02/22/06 02/15/06 - 02/22/06 02/15/06 - 02/22/06 02/15/06 - 02/22/06 02/15/06 - 02/22/06 9 02/22/06 - 03/01/06 02/22/06 - 03/01/06 02/22/06 - 03/01/06 02/22/06 - 03/01/06 02/22/06 - 03/01/06 10 03/01/06 - 03/08/06 03/01/06 - 03/08/06 03/01/06 - 03/08/06 03/01/06 - 03/08/06 03/01/06 - 03/08/06 11 03/08/06 - 03/15/06 03/08/06 - 03/15/06 03/08/06 - 03/15/06 03/08/06 - 03/15/06 03/08/06 - 03/15/06 12 03/15/06 - 03/22/06 03/15/06 - 03/22/06 03/15/06 - 03/22/06 03/15/06 - 03/22/06 03/15/06 - 03/22/06 13 03/22/06 - 03/29/06 03/22/06 - 03/29/06 03/22/06 - 03/29/06 03/22/06 - 03/29/06 03/22/06 - 03/29/06 14 03/29/06 - 04/05/06 03/29/06 - 04/05/06 03/29/06 - 04/05/06 03/29/06 - 04/05/06 03/29/06 - 04/05/06 15 04/05/06 - 04/12/06 04/05/06 - 04/12/06 04/05/06 - 04/12/06 04/05/06 - 04/12/06 04/05/06 - 04/12/06 16 04/12/06 - 04/19/06 04/12/06 - 04/19/06 04/12/06 - 04/19/06 04/12/06 - 04/19/06 04/12/06 - 04/19/06 17 04/19/06 - 04/26/06 04/19/06 - 04/26/06 04/19/06 - 04/26/06 04/19/06 - 04/26/06 04/19/06 - 04/26/06 18 04/26/06 - 05/03/06 04/26/06 - 05/03/06 04/26/06 - 05/03/06 04/26/06 - 05/03/06 04/26/06 - 05/03/06 19 05/03/06 - 05/10/06 05/03/06 - 05/10/06 05/03/06 - 05/10/06 05/03/06 - 05/10/06 05/03/06 - 05/10/06 20 05/10/06 - 05/17/06 05/10/06 - 05/17/06 05/10/06 - 05/17/06 05/10/06 - 05/17/06 05/10/06 - 05/17/06 21 05/17/06 - 05/24/06 05/17/06 - 05/24/06 05/17/06 - 05/24/0 6 05/17/06 - 05/24/06 05/17/06 - 05/24/06 22 05/24/06 - 05/31/06 05/24/06 - 05/31/06 05/24/06 - 05/31/06 05/24/06 - 05/31/06 05/24/06 - 05/31/06 23 05/31/06 - 06/07/06 05/31/06 - 06/07/06 05/31/06 - 06/07/06 05/31/06 - 06/07/06 05/31/06 - 06/07/06 24 06/07/06 - 06/14/06 06/07/06 - 06/14/06 06/07/06 - 06/14/06 06/07/06 - 06/14/06 06/07/06 - 06/14/06 25 06/14/06 - 06/21/06 06/14/06 - 06/21/06 06/14/06 - 06/21/06 06/14/06 - 06/21/06 06/14/06 - 06/21/06 26 06/21/06 - 06/28/06 06/21/06 - 06/28/06 06/21/06 - 06/28/06 06/21/06 - 06/28/06 06/21/06 - 06/28/06 27 06/28/06 - 07/05/06 06/28/06 - 07/05/06 06/28/06 - 07/05/06 06/28/06 - 07/05/06 06/28/06 - 07/05/06 28 07/05/06 - 07/12/06 07/05/06 - 07/12/06 07/05/06 - 07/12/06 07/05/06 - 07/12/06 07/05/06 - 07/12/06 29 07/12/06 - 07/19/06 07/12/06 - 07/19/06 07/12/06 - 07/19/06 07/12/06 - 07/19/06 07/12/06 - 07/19/06 30 07/19/06 - 07/26/06 07/19/06 - 07/26/06 07/19/06 - 07/26/06 07/19/06 - 07/26/06 07/19/06 - 07/26/06 31 07/26/06 - 08/02/06 07/26/06 - 08/02/06 07/26/06 - 08/02/06 07/26/06 - 08/02/06 07/26/06 - 08/02/06 32 08/02/06 - 08/09/06 08/02/06 - 08/09/06 08/02/06 - 08/09/06 08/02/06 - 08/09/06 08/02/06 - 08/09/06 33 08/09/06 - 08/16/06 08/09/06 - 08/16/06 08/09/06 - 08/16/06 08/09/06 - 08/16/06 08/09/06 - 08/16/06 34 08/16/06 - 08/23/06 08/16/06 - 08/23/06 08/16/06 - 08/23/06 08/16/06 - 08/23/06 08/16/06 - 08/23/06 35 08/23/06 - 08/30/06 08/23/06 - 08/30/06 08/23/06 - 08/30/06 08/23/06 - 08/30/06 08/23/06 - 08/30/06 36 08/30/06 - 09/06/06 08/30/06 - 09/06/06 08/30/06 - 09/06/06 08/30/06 - 09/06/06 08/30/06 - 09/06/06 37 09/06/06 - 09/13/06 09/06/06 - 09/13/06 09/06/06 - 09/13/06 09/06/06 - 09/13/06 09/06/06 - 09/13/06 38 09/13/06 - 09/20/06 09/13/06 - 09/20/06 09/13/06 - 09/20/0 6 09/13/06 - 09/20/06 09/13/06 - 09/20/06 39 09/20/06 - 09/27/06 09/20/06 - 09/27/06 09/20/06 - 09/27/06 09/20/06 - 09/27/06 09/20/06 - 09/27/06 40 09/27/06 - 10/04/06 09/27/06 - 10/04/06 09/27/06 - 10/04/06 09/27/06 - 10/04/06 09/27/06 - 10/04/06 41 10/04/06 - 10/11/06 10/04/06 - 10/11/06 10/04/06 - 10/11/06 10/04/06 - 10/11/06 10/04/06 - 10/11/06 42 10/11/06 - 10/18/06 10/11/06 -10/18/06 10/11/06 - 10/18/06 10/11/06 - 10/18/06 10/11/06 - 10/18/06 43 10/18/06 - 10/25/06 10/18/06 - 10/25/06 10/18/06 - 10/25/06 10/18/06 - 10/25/06 10/18/06 - 10/25/06 44 10/25/06 - 11/01/06 10/25/06 - 11/01/06 10/25/06 - 11/01/06 10/25/06 - 11/01/06 10/25/06 - 11/01/06 45 11/01/06 - 11/08/06 11/01/06 - 11/08/06 11/01/06 - 11/08/06 11/01/06 - 11/08/06 11/01/06 - 11/08/06 46 11/08/06 - 11/15/06 11/08/06 -11/15/06 11/08/06 - 11/15/06 11/08/06 -11/15/06 11/08/06 -11/15/06 47 11/15/06 - 11/22/06 11/15/06 -11/22/06 11/15/06 -11/22/06 11/15/06 - 11/22/06 11/15/06 - 11/22/06 48 11/22/06 - 11/29/06 11/22/06 - 11/29/06 11/22/06 - 11/29/06 11/22/06 - 11/29/06 11/22/06 - 11/29/06 49 11/29/06 - 12/06/06 11/29/06 - 12/06/06 11/29/06 - 12/06/06 11/29/06 - 12/06/06 11/29/06 - 12/06/06 50 12/06/06 - 12/13/06 12/06/06 - 12/13/06 12/06/06 - 12/13/06 12/06/06 - 12/13/06 12/06/06 - 12/13/06 51 12/13/06 - 12/20/06 12/13/06 - 12/20/06 12/13/06 - 12/20/06 12/13/06 - 12/20/06 12/13/06 - 12/20/06 52 12/20/06 - 12/27/06 12/20/06 - 12/27/06 12/20/06 - 12/27/06 12/20/06 - 12/27/06 12/20/06 - 12/27/06 53 12/27/06 - 01/03/07 12/27/06 - 01/03/07 12/27/06 - 01/03/07 12/27/06 - 01/03/07 12/27/06 - 01/03/07 C -30

TABLE C-XI.1

SUMMARY

OF COLLECTION DATES FOR SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 TILD STATION JAN - MAR APR - JUN JUL - SEP OCT - DEC CODE CL-01 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-02 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-03 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-04 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-05 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-06 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-07 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-08 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-il1 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-i5 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-22 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-23 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-24 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-33 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-34 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-35 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-36 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-37 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-41 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-42 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-43 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-44 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-45 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-46 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-47 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-48 12/29/05 03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-49 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-5i 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-52 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-53 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-54 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-55 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-56 12/29/05 03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-57 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-58 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-59 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-60 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-61 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-63 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-64 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-65 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-74 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-75 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-76 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-77 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-78 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-79 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-80 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-81 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-84 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-90 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-91 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-97 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-99 12/29/05 03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 CL-1 14 12/29/05 -03/30/06 03/30/06 -06/29/06 06/29/06 -09/28/06 09/28/06 -12/28/06 C -31

FIGURE C-1 MEAN MONTHLY GROSS BETA CONCENTRATION IN AIR PARTICULATE SAMPLES COLLECTED IN THE VICINITY OF CPS, 2006 0.052 0.047 0.042

-. 0.037 E

a C., 0.032

0.027 0.022 0

0.012 0.007 0.002 MONTH PRE-OP (ALL SITES)

-'--2006 CONTROL

-h-2006 INDICATOR

FIGURE C-2 MEAN QUARTERLY AMBIENT GAMMA RADIATION LEVELS (TLD) IN THE VICINITY OF CPS, 2006 50 45 40 35 E

30-E 25-20 15-10-1st 2nd 3rd 4th QUARTER N PRE-OP 0 2006 indicator U 2006 control

APPENDIX D INTER-LABORATORY COMPARISON PROGRAM

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2006 (PAGE 1 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

March 2006 E4964-396 Milk Sr-89 pCi/L 91.5 99.2 0.92 Sr-90 pCi/L 12.2 10.8 1.13 E4965-396 Milk 1-131 pCi/L 74.4 78.0 0.95 Ce-141 pCi/L 95.1 104 0.91 Cr-51 pCi/L 278 280 0.99 Cs-1 34 pCi/L 103 121 0.85 Cs-137 pCi/L 87.6 88.8 0.99 Co-58 pCi/L 93.9 105 0.89 Mn-54 pCi/L 90.0 93.3 0.96 Fe-59 pCi/L 83.0 86.6 0.96 Zn-65 pCi/L 178 176 1.01 Co-60 pCi/L 118 128 0.92 E4967-396 AP Ce-141 pCi 89.9 74 1.21 Cr-51 pCi 253 200 1.27 Cs-1 34 pCi 71.5 86.1 0.83 Cs-1 37 pCi 67.5 63.3 1.07 Co-58 pCi 79.7 74.6 1.07 Mn-54 pCi 74.9 67 1.12 Fe-59 pCi 75.5 61.8 1.22 Zn-65 pCi 146 126 1.16 Co-60 pCi 91.2 91 1.00 E4966-396 Charcoal 1-131 pCi 87.4 86.2 1.01 June 2006 E5018-396 Milk Sr-89 pCi/L 118 129 0.91 A Sr-90 pCi/L 9.29 9.74 0.95 A E5019-396 Milk 1-131 pCi/L 49.9 63.2 0.79 W Ce-141 pCi/L 174 184 0.95 A Cr-51 pCi/L 266 259 1.03 A Cs-1 34 pCi/L 111 127 0.88 A Cs-1 37 pCi/L 116 117 0.99 A Co-58 pCi/L 101 100 1.01 A Mn-54 pCi/L 144 146 0.98 A Fe-59 pCi/L 96.7 93.6 1.03 A Zn-65 pCi/L 182 185 0.98 A Co-60 pCi/L 126 129 0.98 A E5021-396 AP Ce-141 pCi 113 124 0.91 A Cr-51 pCi 176 174 1.01 A Cs-134 pCi 63.7 85.1 0.75 W Cs-137 pCi 76.8 79.0 0.97 A Co-58 pCi 63.1 67.4 0.94 A Mn-54 pCi 102 99 1.04 A Fe-59 pCi 64.6 62.9 1.03 A Zn-65 pCi 131 125 1.05 A Co-60 pCi 81.6 86.5 0.94 A E5020-396 Charcoal 1-131 pCi 65.4 65.9 0.99 A D-1

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2006 (PAGE 2 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

September 2006 E5120-396 Milk Sr-89 pCi/L 90.3 89.2 1.01 A Sr-90 pCi/L 11.6 12.4 0.94 A E5121-396 Milk 1-131 pCi/L 67.8 73.8 0.92 A Ce-141 pCi/L 85.0 86.0 0.99 A Cr-51 pCi/L 263 282 0.93 A Cs-134 pCi/L 74.7 85.0 0.88 A Cs-1 37 pCi/L 172 175 0.98 A Co-58 pCi/L 107 109 0.98 A Mn-54 pCi/L 110 113 0.98 A Fe-59 pCi/L 46.6 43.7 1.07 A Zn-65 pCi/L 144 145 0.99 A Co-60 pCi/L 127 134 0.95 A E5123-396 AP Ce-141 pCi 67.1 66.4 1.01 A Cr-51 pCi 223 217 1.03 A Cs-134 pCi 51.7 65.6 0.79 W Cs-1 37 pCi 134 135.0 0.99 A Co-58 pCi 84.8 84.3 1.01 A Mn-54 pCi 95.2 87 1.10 A Fe-59 pCi 41.6 33.7 1.23 W Zn-65 pCi 123 112 1.10 A Co-60 pCi 98.9 103 0.96 A Co-57 pCi 0.922 (1) NA NA E5122-396 Charcoal 1-131 pCi 77.7 90.7 0.86 A December 2006 E5172-396 Milk Sr-89 pCi/L 72.4 72.0 1.01 A Sr-90 pCi/L 7.05 5.90 1.19 A E5173-396 Milk 1-131 pCi/L 71.9 70.8 1.02 A Ce-141 pCi/L 268 294 0.91 A Cr-51 pCi/L 420 433 0.97 A Cs-134 pCi/L 128 147 0.87 A Cs-137 pCi/L 231 237 0.97 A Co-58 pCi/L 82.0 83.8 0.98 A Mn-54 pCi/L 113 111 1.02 A Fe-59 pCi/L 79.8 79.7 1.00 A Zn-65 pCi/L 170 164 1.04 A Co-60 pCi/L 265 281 0.94 A E5175-396 AP Ce-141 pCi 220 210 1.05 A Cr-51 pCi 343 309 1.11 A Cs-134 pCi 90.8 105 0.86 A Cs-137 pCi 185 169.0 1.09 A Co-58 pCi 65.0 59.7 1.09 A Mn-54 pCi 90.6 79 1.15 A Fe-59 pCi 70.7 56.7 1.25 W Zn-65 pCi 136 117 1.16 A Co-60 pCi 208 200 1.04 A D-2

TABLE D-1 ANALYTICS ENVIRONMENTAL RADIOACTIVITY CROSS CHECK PROGRAM TELEDYNE BROWN ENGINEERING, 2006 (PAGE 3 OF 3)

Identification Reported Known Ratio (c)

Month/Year Number Matrix Nuclide Units Value (a) Value (b) TBE/Analytics Evaluation (d)

December 2006 E5174-396 Charcoal 1-131 pCi 77.4 85.4 0.91 A (1) Impurity detected but not measured by Analytics.

(a) Teledyne Brown Engineeringreported result.

(b) The Analytics known value is equal to 100% of the parameterpresent in the standardas determined by gravimetricand/or volumetric measurements made during standardpreparation.

(c) Ratio of Teledyne Brown Engineeringto 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 TELEDYNE BROWN ENGINEERING, 2006 (PAGE 1 OF 1)

Identification Reported Known Month/Year Number Media Nuclide Units Value (a) Value (b) Control Limits Evaluation (c)

May 2006 Rad 65 Water Sr-89 pCilL 30.2 32.4 23.6-41.1 A Sr-90 pCi/L 8.74 9.00 0.340 - 17.7 A Ba-133 pCi/L 10.9 10.0 1.34- 18.7 A Cs-134 pCi/L 39.7 43.4 34.7- 52.1 A Cs-137 pCi/L 199 214 195 - 233 A Co-60 pCi/L 111 113.0 103- 123 A Zn-65 pCi/L 146 152 126- 178 A Gr-A pCi/L 22.9 21.3 12.1 -30.5 A Gr-B pCi/L 23.7 23.0 14.3- 31.7 A Ra-226 pCilL 2.64 3.02 2.23 - 3.81 A U-Nat pCilL 74.9 69.1 57.1 -81.1 A H-3 pCilL 7950 8130 6720 - 9540 A Rad 65 Water 1-131 pCi/L 18.2 19.1 13.9-24.3 A November 2006 Rad 67 Water Sr-89 pCi/L 40.0 39.9 31.2-48.6 A Sr-90 pCi/L 16.2 16.0 7.34 - 24.7 A Ba-1 33 pCi/L 65.0 70.2 58.1 - 82.3 A Cs-1 34 pCi/L 27.4 29.9 21.2-38.6 A Cs-137 pCi/L 74.4 78.2 69.5 - 86.9 A Co-60 pCi/L 61.6 62.3 53.6-71.0 A Zn-65 pCi/L 277 277 229 - 325 A Gr-A pCi/L 23.3 28.7 16.3-41.1 A Gr-B pCi/L 22.0 20.9 12.2 - 29.6 A U-Nat pCi/L 3.18 3.20 0.00 - 8.40 A H-3 pCi/L 2930 3050 2430 - 3670 A Water 1-131 pCi/L 19.8 22.1 16.9 - 27.3 A (a) Teledyne Brown Engineeringreportedresult.

(b) The ERA known value is equal to 100% of the parameterpresent in the standardas determined by gravimetricand/or volumetric measurements made during standardpreparation.

(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)

TELEDYNE BROWN ENGINEERING, 2006 (PAGE 1 OF 3)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)

January 2006 06-MaW15 Water Am-241 Bq/L 1.29 1.30 0.91-1.69 A Cs-1 34 Bq/L 79.2 95.1 66.57 - 123.63 A Cs-137 Bq/L -0.188 A Co-57 Bq/L 151 166.12 116.28-215.96 A Co-60 Bq/L 141 153.50 107.45 - 199.55 A H-3 Bq/L 988 952.01 666.41 - 1237.61 A Fe-55 Bq/L 106.0 129.60 90.72 - 168.48 A Mn-54 Bq/L 297 315.00 220.50 - 409.50 A Ni-63 Bq/L 61.5 60.34 44.24 - 78.44 A Pu-238 Bq/L 0.961 0.91 0.64-1.18 A Pu-239/240 Bq/L 0.00965 0.00710 (1) A Sr-90 Bq/L 12.6 13.16 9.21-17.11 A Tc-99 Bq/L 22.5 23.38 16.37 - 30.39 A U-234/233 Bq/L 2.20 2.09 1.46-2.72 A U-238 Bq/L 2.23 2.17 1.52-2.82 A Zn-65 Bq/L 219 228.16 159.71 -296.61 A 06-GrW15 Water Gr-A Bq/L 0.575 0.581 >0.0 - 1.162 A Gr-B Bq/L 1.52 1.13 0.56- 1.70 A 06-MaS15 Soil Am-241 Bq/kg 48.8 57.08 39.96 - 74.20 A Cs-1 34 Bq/kg 15.9 N (2)

Cs-1 37 Bq/kg 370 339.69 237.78 - 441.60 A Co-57 Bq/kg 667 656.29 459.40 - 853.18 A Co-60 Bq/kg 478 447.10 312.97-581.23 A Mn-54 Bq/kg 384 346.77 242.74 - 450.80 A Ni-63 Bq/kg 394 323.51 226.46 - 420.56 W K-40 Bq/kg 667 604 423-785 A Sr-90 Bq/kg 253 314.35 220.04 - 408.66 A Tc-99 Bq/kg 146 154.76 108.33-201.19 A Zn-65 Bq/kg 740 657.36 460.15- 854.57 A 06-RdF15 AP Am-241 Bq/sample 0.0850 0.093 0.065 - 0.121 A Cs-1 34 Bq/sample 2.34 2.934 2.054 - 3.814 A Cs-1 37 Bq/sample 2.45 2.531 1.772 - 3.290 A Co-57 Bq/sample 3.87 4.096 2.867 - 5.325 A Co-60 Bq/sample 2.12 2.186 1.530 - 2.842 A Mn-54 Bq/sample 0.0206 A Pu-238 Bq/sample 0.0766 0.067 0.047 - 0.087 A Pu-239/240 Bq/sample 0.00520 0.00041 (1) A Sr-90 Bq/sample 0.761 0.792 0.554 - 1.030 A U-234/233 Bq/sample 0.0217 0.020 0.014 - 0.026 A U-238 Bq/sample 0.0220 0.021 0.015 - 0.027 A Zn-65 Bq/sample 3.86 3.423 2.396 - 4.450 A 06-GrF15 AP Gr-A Bq/sample 0.257 0.361 >0.0 - 0.722 A Gr-B Bq/sample 0.398 0.481 0.241 - 0.722 A D-5

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

TELEDYNE BROWN ENGINEERING, 2006 (PAGE 2 OF 3)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)

January 2006 06-RdV1 5 Vegetation Am-241 Bq/sample 0.156 0.156 0.109- 0.203 A Cs-1 34 Bq/sample 0.369 A Cs-1 37 Bq/sample 3.15 3.074 2.152 - 3.996 A Co-57 Bq/sample 10.1 8.578 6.005- 11.151 A Co-60 Bq/sample 4.69 4.520 3.164 - 5.876 A Mn-54 Bq/sample 6.53 6.247 4.373 - 8.121 A Pu-238 Bq/sample 0.183 0.137 0.096 - 0.178 N (3)

Pu-239/240 Bq/sample 0.111 0.164 0.115 - 0.213 N (3)

Sr-90 Bq/sample 2.22 1.561 1.093 - 2.029 N (3)

U-234/233 Bq/sample 0.208 0.208 0.146 - 0.270 A U-238 Bq/sample 0.176 0.216 0.151 - 0.281 A Zn-65 Bq/sample 10.5 9.798 6.859 - 12.737 A July 2006 06-MaW16 Water Am-241 Bq/L 2.09 2.31 1.62-3.00 A Cs-134 Bq/L 99.8 112.82 78.98 - 146.66 A Cs-1 37 Bq/L 191 196.14 137.30 -254.98 A Co-57 Bq/L 203 213.08 149.16- 277.00 A Co-60 Bq/L 46.2 47.5 33.2-61.8 A H-3 Bq/L 471 428.85 300.20 - 557.50 A Fe-55 Bq/L 173 165.4 115.8-215.0 A Ni-63 Bq/L 109 118.62 83.03-154.21 A Pu-238 Bq/L 1.50 1.39 0.97-1.81 A Pu-239/240 Bq/L 2.01 1.94 1.36-2.52 A Sr-90 Bq/L 13.7 15.69 10.98- 20.40 A Tc-99 Bq/L 29.0 27.15 19.00 - 35.29 A U-234/233 Bq/L 2.19 2.15 1.50-2.80 A U-238 Bq/L 2.25 2.22 1.55-2.89 A Zn-65 Bq/L 178 176.37 123.46 - 229.28 A 06-GrW16 Water Gr-A Bq/L 1.52 1.033 >0.0 - 2.066 A Gr-B Bq/L 1.18 1.03 0.52-1.54 A 06-MaS16 Soil Am-241 Bq/kg 83.6 105.47 73.83- 137.11 W Cs-1 34 Bq/kg 393 452.13 316.49 - 587.77 A Cs-137 Bq/kg 522 525.73 368.01 - 683.45 A Co-57 Bq/kg 636 676.33 473.43 - 879.23 A Co-60 Bq/kg 3.78 1.98 A (4)

Mn-54 Bq/kg 598 594.25 415.98-772.52 A Ni-63 Bq/kg 571 627.3 470.6 - 874.0 A Pu-238 Bq/kg 71.2 82 57-107 A Pu-239240 Bq/kg 0.487 0.93 A (4)

K-40 Bq/kg 615 604 423-785 A Sr-90 Bq/kg 178 223.3 156.3-290.3 W Tc-99 Bq/kg 175 218.01 152.61 - 283.41 A U-234/233 Bq/kg 119 152.44 106.71 - 198.17 W U-238 Bq/kg 115 158.73 111.11 -206.35 W Zn-65 Bq/kg 937 903.61 632.53-1174.69 A D-6

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

TELEDYNE BROWN ENGINEERING, 2006 (PAGE 3 OF 3)

Identification Reported Known Acceptance Month/Year Number Media Nuclide Units Value (a) Value (b) Range Evaluation (c)

July 2006 06-RdF16 AP Am-241 Bq/sample 0.124 0.142 0.099 - 0.185 A Cs-1 34 Bq/sample 2.62 3.147 2.203 - 4.091 A Cs-1 37 Bq/sample 1.98 1.805 1.263 - 2.346 A Co-57 Bq/sample 2.65 2.582 1.807 - 3.357 A Co-60 Bq/sample 1.63 1.577 1.104 - 2.050 A Mn-54 Bq/sample 2.10 1.92 1.34-2.50 A Pu-238 Bq/sample 0.118 0.118 0.083 - 0.153 A Pu-239/240 Bq/sample 0.00822 A Sr-90 Bq/sample 0.549 0.62 0.43 - 0.81 A U-234/233 Bq/sample 0.140 0.134 0.094 - 0.174 A U-238 Bq/sample 0.136 0.139 0.097 - 0.181 A Zn-65 Bq/sample -0.163 A 06-GrF16 AP Gr-A Bq/sample 0.134 0.290 >0.0 - 0.580 A Gr-B Bq/sample 0.358 0.359 0.180 - 0.538 A (1) False positive test (2) Evaluated as a false positive by MAPEP although we considered the result a non-detect due to the peak not being identified by the gamma software. For Cs-134, MAPEP suggests the Bi-214 is not being differentiated from the Cs-134 peak. See email attached with MAPEP results in Appendix A. NCR 06-07.

(3) Sr samples analyzed in triplicate and one high result of 2.43 pCi/kg biased the submitted results on the high side.

We were unable to determine the cause for the higher result. Since we do not analyze vegetation for isotpic Pu, no NCR was initiatedfor the Pu failure. MAPEP suggest pyrosulfate fusion preparationpriorto analysis for isotopic Pu in vegetation samples.

(4) Not detected, reported a statisticallyzero result. (Falsepositive test)

(a) Teledyne Brown Engineeringreported result.

(b) The MAPEP known value is equal to 100% of the parameterpresent in the standardas determined by gravimetricand/or volumetric measurementsmade during standardpreparation.

(c) DOE/MAPEPevaluation:A=acceptable, W=acceptablewith warning, N=not acceptable.

D-7

TABLE D-4 ERA(a) STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAM ENVIRONMENTAL, INC., 2006 (Page 1 of 2)

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Result' Limits Acceptance STW-1078 01/16/06 Sr-89 49.9 +/- 3.5 50.2 41.5 -58.9 Pass STW-1078 01/16/06 Sr-90 31.5 +/- 1.5 30.7 22.0 - 39.4 Pass STW-1079 01/16/06 Ba-133 86.5 +/- 4.1 95.0 78.6 -111.0 Pass STW-1079 01/16/06 Co-60 96.3 +/- 4.1 95.3 86.6 - 104.0 Pass STW-1079 01/16/06 Cs-1 34 22.6 +/- 3.0 23.1 14.4 -31.8 Pass STW-1079 01/16/06 Cs-1 37 109.0 +/- 5.9 111.0 101.0 - 121.0 Pass STW-1079 01/16/06 Zn-65 198.0 +/- 11.2 192.0 159.0 - 225.0 Pass STW-1080 01/16/06 Gr. Alpha 10.8 +/- 1.4 9.6 1.0 -18.3 Pass STW-1080 01/16/06 Gr. Beta 56.9 +/- 1.9 61.9 44.6 - 79.2 Pass STW-1081 01/16/06 Ra-226 4.3 +/- 0.4 4.6 3.4 - 5.8 Pass STW-1081 01/16/06 Ra-228 7.1 +/-1.8 6.6 3.7 - 9.5 Pass STW-1081 01/16/06 Uranium 20.7 +/- 0.5 22.1 16.9 -27.3 Pass STW-1088 04/10/06 Sr-89 29.0 +/- 1.8 32.4 23.7 -41.1 Pass STW-1088 04/10/06 Sr-90 8.7 +/- 1.0 9.0 0.3 - 17.7 Pass STW-1089 04/10/06 Ba-133 10.3 +/- 0.4 10.0 1.3 -18.7 Pass STW-1089 04/10/06 Co-60 114.0 +/- 2.8 113.0 103.0 - 123.0 Pass STW-1089 04/10/06 Cs-134 41.9 +/- 1.4 43.4 34.7 -52.1 Pass STW-1089 04/10/06 Cs-137 208.0 +/- 1.1 214.0 195.0 - 233.0 Pass STW-1089 04/10/06 Zn-65 154.0 +/- 0.8 152.0 126.0 - 178.0 Pass STW-1090 04/10/06 Gr. Alpha 13.4 +/- 1.1 21.3 12.1 -30.5 Pass STW-1090 04/10/06 Gr. Beta 27.7 +/- 2.1 23.0 14.3 -31.7 Pass STW- 1091 04/10/06 1-131 22.0 +/- 0.3 19.1 13.9 -24.3 Pass STW- 1092 04/10/06 H-3 7960.0 +/- 57.0 8130.0 6720.0 - 9540.0 Pass STW-1092 04/10/06 Ra-226 2.9 +/- 0.4 3.0 2.2 - 3.8 Pass STW- 1092 04/10/06 Ra-228 20.9 +/- 1.2 19.1 10.8 -27.4 Pass STW-1092 04/10/06 Uranium 68.6 +/- 3.4 69.1 57.1 -81.1 Pass STW-1094 07/10/06 Sr-89 15.9 +/- 0.7 19.7 11.0 -28.4 Pass STW-1094 07/10/06 Sr-90 24.3 +/- 0.4 25.9 17.2 -34.6 Pass STW-1095 07/10/06 Ba-133 94.9 +/- 8.9 88.1 72.9 - 103.0 Pass STW-1095 07/10/06 Co-60 104.0 +/- 1.8 99.7 91.0 - 108.0 Pass STW-1095 07/10/06 Cs-134 48.7 +/- 1.3 54.1 45.4 - 62.8 Pass STW-1095 07/10/06 Cs-137 236.0 +/- 3.0 238.0 217.0 -259.0 Pass STW-1095 07/10/06 Zn-65 126.0 +/- 8.0 121.0 100.0 - 142.0 Pass STW-1096 07/10/06 Gr. Alpha 10.9 +/- 1.0 10.0 1.3 -18.6 Pass STW-1096 07/10/06 Gr. Beta 9.7 +/- 0.4 8.9 0.2 -17.5 Pass STW-1097 07/10/06 Ra-226 11.0 +/- 0.5 10.7 7.9 - 13.5 Pass STW-1097 07/10/06 Ra-228 12.2 +/- 0.8 10.7 6.1 -15.3 Pass STW-1097 07/10/06 Uranium 43.4 +/- 0.1 40.3 33.3 - 47.3 Pass D -8

TABLE D-4 ERA(a) STATISTICAL

SUMMARY

PROFICIENCY TESTING PROGRAM ENVIRONMENTAL, INC., 2006 (Page 2 of 2)

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Resulte Limits Acceptance STW-1 104 10/06/06 Sr-89 38.4 +/- 1.3 39.9 31.2 -45.7 Pass STW-1 104 10/06/06 Sr-90 15.5 +/- 0.5 16.0 7.3 -24.7 Pass STW-1 105 10/06/06 Ba-1 33 64.9 +/- 2.8 70.2 58.1 - 82.3 Pass STW-1 105 10/06/06 Co-60 61.6 +/- 1.0 62.3 53.6 - 71.0 Pass STW-1 105 10/06/06 Cs-1 34 29.0 +/- 0.9 29.9 21.2 - 38.6 Pass STW-1 105 10/06/06 Cs-1 37 77.8 +/- 2.4 78.2 69.5 - 86.9 Pass STW-1105 10/06/06 Zn-65 293.0 +/- 2.4 277.0 229.0 - 325.0 Pass STW-1 106 10/06/06 Gr. Alpha 23.9 +/- 2.5 28.7 16.3 -41.1 Pass STW-i 106 10/06/06 Gr. Beta 23.7 +/- 1.4 20.9 12.2 - 29.6 Pass d

STW-1107 10/06/06 1-131 28.4 +/- 1.2 22.1 16.9 - 27.3 Fail STW-i 108 10/06/06 Ra-226 14.5 +/- 0.5 14.4 10.7 - 18.1 Pass STW-i 108 10/06/06 Ra-228 6.6 +/- 0.4 5.9 3.3 - 8.4 Pass STW-1 108 10/06/06 Uranium 2.9 +/- 0.1 3.2 0.0 - 8.4 Pass STW-1 109 10/06/06 H-3 3000.0 +/- 142.0 3050.0 2430.0 - 3670.0 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

b Unless otherwise indicated, the laboratory result is given as the mean +/- standard deviation for three determinations.

c Results are presented as the known values, expected laboratory precision (1 sigma, 1 determination) and control limits as provided by ERA.

d The reported result was an average of three analyses, results ranged from 25.36 to 29.23 pCi/L.

A fourth analysis was performed, result of analysis, 24.89 pCi/L.

D-9

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP)a ENVIRONMENTAL, INC., 2006 (Page 1 of 3)

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STVE-1082 01/01/06 Am-241 0.16 +/- 0.06 0.16 0.11 -0.20 Pass STVE-1082 01/01/06 Co-57 10.40 +/- 0.20 8.58 6.00 -11.15 Pass STVE-1082 01/01/06 Co-60 5.00 +/- 0.20 4.52 3.16 -5.88 Pass STVE-1082 e 01/01/06 Cs-134 < 0.20 0.00 Pass STVE-1082 01/01/06 Cs-1 37 3.40 +/- 0.20 3.07 2.15 -4.00 Pass STVE-1082 01/01/06 Mn-54 6.90 +/- 0.20 6.25 4.37 -8.12 Pass STVE- 1082 f 01/01/06 Pu-238 0.08 +/- 0.03 0.14 0.10 -0.18 Fail STVE-1082 01/01/06 Pu-239/40 0.17 +/- 0.03 0.16 0.11 -0.21 Pass STVE-1082 01/01/06 Sr-90 1.40 +/- 0.20 1.56 1.09 - 2.03 Pass STVE-1082 01/01/06 U-233/4 0.24 +/- 0.05 0.21 0.15 -0.27 Pass STVE-1082 01/01/06 U-238 0.19 +/- 0.04 0.22 0.15 -0.28 Pass STVE-1082 01/01/06 Zn-65 11.10 +/- 0.50 9.80 6.86 - 12.74 Pass STSO-1083 01/01/06 Am-241 54.60 +/- 5.50 57.08 39.96 - 74.20 Pass STSO-1083 01/01/06 Co-57 762.90 +/- 12.70 656.29 459.40 -853.18 Pass STSO-1083 01/01/06 Co-60 504.90 +/- 3.10 447.10 312.97 -581.23 Pass STSO-1083 e 01/01/06 Cs-1 34 < 1.70 0.00 Pass STSO-1083 01/01/06 Cs-1 37 406.50 +/- 3.70 339.69 237.78 -441.60 Pass STSO-1083 01/01/06 K-40 719.20 +/- 18.40 604.00 422.80 - 785.20 Pass STSO-1 083 01/01/06 Mn-54 415.60 +/- 4.80 346.77 242.74 -450.80 Pass STSO-1083 01/01/06 Ni-63 261.40 +/- 14.70 323.51 226.46 - 420.56 Pass STSO-1083 01/01/06 Pu-238 14.60 +/- 2.90 61.15 42.81 - 79.50 Fail STSO-1083 01/01/06 Pu-239/40 14.60 +/- 2.40 45.85 32.09 - 59.61 Fail STSO-1 083 01/01/06 U-233/4 13.50 +/- 1.70 37.00 25.90 -48.10 Fail STSO-1 083 01/01/06 U-238 15.40 +/- 1.80 38.85 27.20 - 50.50 Fail STSO-1083 01/01/06 Zn-65 783.40 +/- 7.00 657.36 460.15 -854.57 Pass STAP-1084 01/01/06 Gr. Alpha 0.26 +/- 0.02 0.36 0.00 - 0.72 Pass STAP-1084 01/01/06 Gr. Beta 0.51 +/- 0.03 0.48 0.24 - 0.72 Pass STAP-1085 01/01/06 Am-241 0.12 +/- 0.02 0.09 0.07 -0.12 Pass STAP-1085 01/01/06 Co-57 4.32 +/- 0.10 4.10 2.87 - 5.32 Pass STAP-1085 01/01/06 Co-60 2.24 +/- 0.16 2.19 1.53 -2.84 Pass STAP-1085 01/01/06 Cs-134 2.96 +/- 0.19 2.93 2.05 - 3.81 Pass STAP-1085 01/01/06 Cs-137 2.64 +/- 0.20 2.53 1.77 -3.29 Pass STAP-1085 01/01/06 Pu-238 0.03 +/- 0.01 0.07 0.05 - 0.09 Fail STAP- 1085 e 01/01/06 Pu-239/40 < 0.01 0.00 Pass STAP-1085 01/01/06 Sr-90 0.77 +/- 0.21 0.79 0.55 -1.03 Pass STAP-1085 01/01/06 U-233/4 0.03 +/- 0.01 0.02 0.01 - 0.03 Pass STAP-1085 01/01/06 U-238 0.02 +/- 0.01 0.02 0.01 -0.03 Pass STAP-1085 01/01/06 Zn-65 3.94 +/- 0.44 3.42 2.40 -4.45 Pass D-10

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEPa ENVIRONMENTAL, INC., 2006 (Page 2 of 3)

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STW-1086 01/01/06 Am-241 1.29 +/- 0.05 1.30 0.91 -1.69 Pass STW-1086 01/01/06 Co-57 177.10 +/- 1.00 166.12 116.28 -215.96 Pass STW-1086 01/01/06 Co-60 158.30 +/- 1.00 153.50 107.45 - 199.55 Pass STW-1086 01/01/06 Cs-134 96.40 +/- 1.50 95.10 66.57 - 123.63 Pass STW-1086 e 01/01/06 Cs-137 < 0.80 0.00 Pass STW-1086 01/01/06 Fe-55 102.50 +/- 18.10 129.60 90.72 - 168.48 Pass STW-1086 01/01/06 H-3 956.60 +/- 16.50 952.01 666.41 - 1238.00 Pass STW-1086 01/01/06 Mn-54 335.30 +/- 2.20 315.00 220.50 - 409.50 Pass STW-1086 01/01/06 Ni-63 62.90 +/- 3.60 60.34 42.24 - 78.44 Pass STW-1086 01/01/06 Pu-238 0.96 +/- 0.07 0.91 0.70 - 1.30 Pass STW- 1086 01/01/06 Pu-239/40 < 0.20 0.00 Pass STW-1 086 01/01/06 Sr-90 12.80 +/- 1.60 13.16 9.21 -17.11 Pass STW-1086 01/01/06 Tc-99 22.30 +/- 1.20 23.38 16.37 - 30.39 Pass STW-1 086 01/01/06 U-233/4 2.02 +/- 0.12 2.09 1.46 -2.72 Pass STW-1 086 01/01/06 U-238 2.03 +/- 0.12 2.17 1.52 -2.82 Pass STW-1 086 01/01/06 Zn-65 249.50 +/- 3.40 228.16 159.71 -296.61 Pass STW-1 087 01/01/06 Gr. Alpha 0.59 +/- 0.10 0.58 0.00 -1.16 Pass STW-1 087 01/01/06 Gr. Beta 1.69 +/- 0.07 1.13 0.56 -1.70 Pass STVE-1098 e 07/01/06 Co-57 <0.14 0.00 Pass STVE- 1098 g 07/01/06 Co-60 6.89 +/- 0.17 5.81 4.06 - 7.55 Pass STVE-1098 07/01/06 Cs-1 34 8.46 +/- 0.16 7.49 5.24 - 9.73 Pass STVE-1098 07/01/06 Cs-1 37 6.87 +/- 0.29 5.50 3.85 -7.14 Pass STVE-1098 07/01/06 Mn-54 10.36 +/- 0.29 8.35 5.85 - 10.86 Pass STVE-1098 07/01/06 Zn-65 7.46 +/- 0.50 5.98 4.19 -7.78 Pass STSO-1099 07/01/06 Am-241 130.00 +/- 11.60 105.47 73.83 -137.11 Pass STSO-1099 07/01/06 Co-57 784.90 +/- 3.80 676.33 473.43 -879.23 Pass STSO-1099 07/01/06 Co-60 2.10 +/- 0.90 1.98 0.00 -5.00 Pass STSO-1099 07/01/06 Cs-1 34 500.70 +/- 7.40 452.13 316.49 -587.77 Pass STSO-1099 07/01/06 Cs-1 37 624.20 +/- 4.90 525.73 368.01 -683.45 Pass STSO-1099 07/01/06 K-40 701.30 +/- 3.40 604.00 423.00 -785.00 Pass STSO-1099 07/01/06 Mn-54 699.20 +/- 5.20 594.25 415.98 -772.52 Pass STSO-1099 07/01/06 Ni-63 614.40 +/- 17.10 672.30 470.60 -874.00 Pass STSO-1099 07/01/06 Pu-238 79.90 +/- 5.80 82.00 57.00 -107.00 Pass STSO-1099 07/01/06 Pu-239/40 < 0.70 0.00 Pass STSO-1099 07/01/06 U-233/4 150.50 +/- 5.90 152.44 106.71 -198.17 Pass STSO-1099 07/01/06 U-238 151.60 +/- 6.00 158.73 111.11 -206.35 Pass STSO-1099 07/01/06 Zn-65 1021.90 +/- 9.20 903.61 632.53 -1175.00 Pass D-11

TABLE D-5 DOE'S MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEPr ENVIRONMENTAL, INC., 2006 (Page 3 of 3)

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STAP-1100 07/01/06 Am-241 0.16 +/- 0.03 0.14 0.10 -0.19 Pass STAP-1100 07/01/06 Co-57 2.17 +/- 0.06 2.58 1.81 -3.36 Pass STAP-1100 07/01/06 Co-60 1.38 +/- 0.07 1.58 1.10 -2.05 Pass STAP-1100 07/01/06 Cs-134 2.52 +/- 0.13 3.15 2.20 -4.09 Pass STAP-1100 07/01/06 Cs-137 1.64 +/- 0.08 1.81 1.26 -2.35 Pass STAP-1100 07/01/06 Mn-54 1.76 +/- 0.18 1.92 1.34 -2.50 Pass STAP-1100 07/01/06 Pu-238 0.09 +/- 0.02 0.12 0.08 -0.15 Pass STAP-1100 07/01/06 Sr-90 0.66 +/- 0.21 0.62 0.43 -0.81 Pass STAP-1100 07/01/06 U-233/4 0.15 +/- 0.02 0.13 0.09 -0.17 Pass STAP-1100 07/01/06 U-238 0.13 +/- 0.02 0.14 0.10 -0.18 Pass STAP-1100 e 07/01/06 Zn-65 < 0.07 0.00 Pass STAP-1101 07/01/06 Gr. Alpha 0.08 +/- 0.03 0.29 0.00 -0.58 Pass STAP-1101 07/01/06 Gr. Beta 0.41 +/- 0.05 0.36 0.18 -0.54 Pass STW-1102 07/01/06 Gr. Alpha 0.76 +/- 0.07 1.03 0.00 -2.07 Pass STW-1102 07/01/06 Gr. Beta 1.23 +/- 0.06 1.03 0.52 -1.54 Pass STW-1103 07/01/06 Am-241 1.86 +/- 0.09 2.31 1.62 -3.00 Pass STW-1103 07/01/06 Co-57 224.10 +/- 1.20 213.08 149.16 -277.00 Pass STW-1103 07/01/06 Co-60 49.40 +/- 0.50 47.50 33.20 -61.80 Pass STW-1103 07/01/06 Cs-134 112.70 +/- 0.90 112.82 78.97 -146.66 Pass STW-1103 07/01/06 Cs-137 206.60 +/- 1.40 196.14 137.30 -254.98 Pass STW-1103 07/01/06 Fe-55 138.40 +/- 5.40 165.40 115.80 -215.00 Pass STW-1103 07/01/06 H-3 446.50 +/- 11.80 428.85 300.20 -557.50 Pass STW-1103 e 07/01/06 Mn-54 < 0.30 0.00 Pass STW-1103 07/01/06 Ni-63 116.70 +/- 3.60 118.62 83.03 - 154.21 Pass STW-1103 07/01/06 Pu-238 1.27 +/- 0.07 1.39 0.97 - 1.81 Pass STW-1 103 07/01/06 Pu-239/40 1.67 +/- 0.08 1.94 1.36 -2.52 Pass STW-1103 07/01/06 Sr-90 16.40 +/- 1.90 15.69 10.98 -20.40 Pass STW-1103 07/01/06 Tc-99 29.40 +/- 1.10 27.15 19.00 -35.29 Pass STW-1103 07/01/06 U-233/4 1.97 +/- 0.08 2.15 1.50 -2.80 Pass STW-1 103 07/01/06 U-238 1.97 +/- 0.08 2.22 1.55 - 2.89 Pass STW-1103 07/01/06 Zn-65 192.50 +/- 2.40 176.37 123.46 -229.28 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

c Laboratory codes as follows: STW (water), STAP (air filter), STSO (soil), STVE (vegetation).

MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP.

e Included in the MAPEP as a false positive.

f Difficulties with the analyses for transuranics isotopes in solid samples (Filters, Soil and vegetation),

were attributed to incomplete dissolution of the samples. Soil samples were repeated, results of reanalyses:

Pu-238, 53.1 +/- 5.3 bq/kg. Pu-239/240, 42.4 +/- 4.7 bq/kg. U-233/4, 33.3 +/- 3.5 bq/kg. U-238, 35.5 +/- 3.6 bq/kg.

g The July vegetation sample was provided in two separate geometries, (100 ml. and 500 ml.). Results reported here used the 500 ml. standard size geometry. Results for the 100 ml. geometry showed approximately a 15% higher bias.

D-12

Intentionally left blank APPENDIX E ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

Docket No: 50-461 CLINTON POWER STATION Annual Radiological Groundwater Protection Program Report 1 January Through 31 December 2006 Prepared By Teledyne Brown Engineering Environmental Services An Exelon Company Clinton Power Station Clinton, IL 61727 April 2007

Table Of Contents I. Sum m ary and Conclusions ........................................................................................... 1 I1. Introduction ................................................................................................................ 4 A. Objectives of the RG PP .................................................................................... 4 B. Im plem entation of the Objectives .................................................................... 4 C. Program Description ......................................................................................... 5 D. Characteristics of Tritium (H-3) ........................................................................ 6 Ill. Program Description ................................................................................................... 6 A. Sam ple Analysis .............................................................................................. 6 B. Data Interpretation ............................................................................................ 7 C. Background Analysis ....................................................................................... 8

1. Background Concentrations of Tritium ................................................... 8 IV. Results and Discussion ............................................................................................. 10 A. Groundwater Results ....................................................................................... 10

Appendices Appendix A Location Designation of the Annual Radiological Groundwater Protection Program Report (ARGPPR)

Tables Table A-1: Radiological Groundwater Protection Program - Sampling Locations, Clinton Power Station, 2006 Security-Related Information: Maps of the Clinton Power Station have been withheld from public disclosure under 10CFR2.390 and N.J.S.A.

47:1A-1.1 Appendix B Data Tables of the Annual Radiological Groundwater Protection Program Report (ARGPPR)

Tables Table B-1.1 Concentrations of Tritium in Unit 2 Pit, Groundwater and Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table B-1.2 Highest to Lowest Concentrations of Tritium in Unit 2 Pit, Groundwater and Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table B-1.3 Concentrations of Strontium in Unit 2 Pit, Groundwater and Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table B-1.4 Highest to Lowest Concentrations of Strontium in Unit 2 Pit, Groundwater and Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table B-1.5 Concentrations of Gamma Emitters in Unit 2 Pit, Groundwater and Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

Table B-1.6 Highest to Lowest Concentrations of Gamma Emitters in Unit 2 Pit, Groundwater and Surface Water Samples Collected in the Vicinity of Clinton Power Station, 2006.

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. This evaluation involved numerous station personnel and contractor support personnel. At Clinton, 14 permanent groundwater monitoring wells were installed in 2006. The results for the remainder of the locations are included in this report. This report covers groundwater and surface water samples, collected outside of the Licensee required Off-Site Dose Calculation Manual (ODCM) requirements, both on and off station property in 2006. During that time period, 166 analyses were performed on 59 samples from 30 locations.

The monitoring was conducted in two phases. Phase 1 of the monitoring was part of a comprehensive study initiated by Exelon to establish baseline data of groundwater and surface water radionuclides. Phase 1 was conducted by Connestoga Rovers and Associates (CRA) and the conclusions were made available to state and federal regulators as well as the public on an Exelon web site http:/Lwww.exeloncorp.com/ourcompanies/powergen/nuclearrTritium-htm.

Phase 2 of the RGPP was conducted by Exelon corporate, contractors and station personnel to initiate long-term monitoring at groundwater and surface water locations selected during Phase 1. All analytical results from both the Phase 1 and Phase 2 monitoring are reported herein.

In assessing all the data gathered for this report, it was concluded that the operation of Clinton Power Station had no adverse radiological impact on the environment, and there are no known active releases into the groundwater or surface water at Clinton Power Station.

Gamma-emitting radionuclides associated with licensed plant operations were not detected at concentrations greater than their respective Lower Limits of Detection (LLDs) as specified in NUREG-1 302 in any of the groundwater or surface water samples. In the case of tritium, Exelon specified that the independent laboratory achieve a lower limit of detection 10 times lower than that required by the United States Environmental Protection Agency (USEPA) regulation.

Strontium-89/90 was not detected at a concentration greater than the LLD of 2.0 pico-Curies per liter (pCi/L) in any of the groundwater or surface water samples tested.

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 9 of 42 i

i groundwater monitoring locations. The tritium concentrations ranged from 156 +

I 112 pCi/L to 559 + 157 pCi/L.

I I

I

£ i

Intentionally left blank I1. Introduction The Clinton Power Station (CPS), consisting of one approximately 1140 MW gross electrical power output boiling water reactor is located in Harp Township, DeWitt County, Illinois. CPS is owned and operated by AmerGen Energy Company 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 AmerGen. 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) and Environmental Inc. (Midwest Labs) on samples collected in 2006.

A. Objective of the 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:

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 on an Exelon web site in station specific reports.

http@/:www.exeloncorp-com/ourcompanies/powergen/nuclear/Tritiu m.htm

2. The Clinton Power Station reports describe the local hydrogeologic regime. Periodically, the flow patterns on the surface and shallow subsurface are updated based on ongoing measurements.

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

4. Clinton Power Station has implemented new procedures to identify and report new leaks, spills, or other detections with potential radiological significance in a timely manner.

5. Clinton Power Station staff and consulting hydrogeologist assess analytical results on an ongoing basis to identify adverse trends.

C. Program Description

1. Sample Collection Sample locations can be found in Table A-1 and Figures A-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.

D. Characteristics of Tritium (H-3)

Tritium (chemical symbol H-3) is a radioactive isotope of hydrogen. The most common form of tritium is tritium oxide, which is also called "tritiated water." The chemical properties of tritium are essentially those of ordinary hydrogen.

Tritiated water behaves the same as ordinary water in both the environment and the body. Tritium can be taken into the body by drinking water, breathing air, eating food, or absorption through skin. Once tritium enters the body, it disperses quickly and is uniformly distributed throughout the body. Tritium is excreted primarily through urine with a clearance rate characterized by an effective biological half-life of about 14 days. Within one month or so after ingestion, essentially all tritium is cleared. Organically bound tritium (tritium that is incorporated in organic compounds) can remain in the body for a longer period.

Tritium is produced naturally in the upper atmosphere when cosmic rays strike air molecules. Tritium is also produced during nuclear weapons explosions, as a by-product in reactors producing electricity, and in special production reactors, where the isotopes lithium-7 and/or boron-10 are activated to produce tritium. Like normal water, tritiated water is colorless and odorless. Tritiated water behaves chemically and physically like non-tritiated water in the subsurface, and therefore tritiated water will travel at the same velocity as the average groundwater velocity.

Tritium has a half-life of approximately 12.3 years. It decays spontaneously to helium-3 (3He). This radioactive decay releases a beta particle (low-energy electron). The radioactive decay of tritium is the source of the health risk from exposure to tritium. Tritium is one of the least dangerous radionuclides because it emits very weak beta radiation and leaves the body relatively quickly. Since tritium is almost always found as water, it goes directly into soft tissues and organs. The associated dose to these tissues is generally uniform and is dependent on the water content of the specific tissue.

Ill. Program Description A. Sample Analysis This section describes the general analytical methodologies used by TBE and EIML to analyze the environmental samples for radioactivity for the Clinton Power Station RGPP in 2006.

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

1. Concentrations of gamma emitters in groundwater and surface water.

2. Concentrations of strontium in groundwater and surface water.

3. Concentrations of tritium in groundwater and surface water.

B. Data Interpretation The radiological data collected prior to Clinton Power Station becoming operational were used as a baseline with which these operational data were compared. For the purpose of this report, Clinton Power Station was considered operational at initial criticality. Several factors were important in the interpretation of the data:

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

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

Statistically, the exact value of a measurement is expressed as a range with a stated level of confidence. The convention is to report results with a 95% level of confidence. The uncertainty comes from calibration standards, sample volume or weight measurements, sampling uncertainty and other factors. Exelon reports the uncertainty of a measurement created by statistical process (counting error) as well as all sources of error (Total Propagated Uncertainty or TPU). Each result has two values calculated.

Exelon reports the TPU by following the result with plus or minus +

the estimated sample standard deviation, as TPU, that is obtained by propagating all sources of analytical uncertainty in measurements.

Analytical uncertainties are reported at the 95% confidence level in this report for reporting consistency with the AREOR.

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

For groundwater and surface water 11 nuclides, Mn-54, Co-58, Fe-59, Co-60, Zn-65, Nb-95, Zr-95, Cs-134, Cs-I137, Ba-140 and La-140 were reported.

C. Background Analysis A pre-operational radiological environmental monitoring program (pre-operational REMP) was conducted to establish background radioactivity levels prior to operation of the Station. The environmental media sampled and analyzed during the pre-operational REMP were atmospheric radiation, fall-out, domestic water, surface water, marine life, milk, and vegetation. The results of the monitoring were detailed in the report entitled, Environmental Radiological Monitoring for Clinton Power Nuclear Power Station, Illinois Power Company, Annual Report 1987, May 1988.

The pre-operational REMP contained analytical results from samples collected from the surface water and groundwater.

1. Background Concentrations of Tritium The purpose of the following discussion is to summarize background measurements of tritium in 'various media performed by others.

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

A major anthropogenic source of tritium and strontium-90 comes from the former atmospheric testing of thermonuclear weapons. Levels of tritium in precipitation increased significantly during the 1950s and early 1960s, and later with additional testing, resulting in the release of significant amounts of tritium to the atmosphere. The Canadian heavy water nuclear power reactors, other commercial power reactors, nuclear research and weapons production continue to influence tritium concentrations in the environment.

b. Precipitation Data Precipitation samples are routinely collected at stations around the world for the analysis of tritium and other radionuclides. Two publicly available databases that provide tritium concentrations in precipitation are Global Network of Isotopes in Precipitation (GNIP) and USEPA's RadNet database. GNIP provides tritium precipitation concentration data for samples collected world wide from 1960 to 2006.

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

c. Surface Water Data Tritium concentrations are routinely measured in Clinton Lake. Illinois surface water data were typically less than 100 pCi/L.

According to the USEPA, surface water data typically has an uncertainty +/- 70 to 100 pCi/L 95% confidence bound on each given measurement. Therefore, the typical background data provided may be subject to measurement uncertainty of approximately +/- 70 to 100 pCi/L.

The radio-analytical laboratory is counting tritium results to an Exelon specified LLD of 200 pCi/L. Typically, the lowest positive measurement will be reported within a range of 40 -

240 pCi/L or 140 +/- 100 pCi/L. Clearly, these sample results cannot be distinguished as different from background at this concentration.

IV. Results and Discussion A. Groundwater Results Groundwater Baseline samples were collected from on and off-site wells during two (2) Phases at the station. Analytical results and anomalies are discussed below.

Samples from 30 locations were analyzed for tritium activity (Table B-1.1 and B-1.2, Appendix B). Tritium values ranged from below the Exelon imposed LLD of 200 pico-curies per liter to 559 pCi/I.

Strontium Strontium-90 was detected in one of 51 samples at a concentration of 1.6 pCi/liter. This was less than the required detection limit of 2.0 pCi/liter. (Table B-1.3 and B-1.4, Appendix B).

Gamma Emitters and Strontium Naturally occurring Beryllium-7 was detected in three of 56 samples. The concentrations ranged from 73 pCi/liter to 207 pCi/liter. Additionally, naturally occurring Potassium-40 was also detected in 17 of 56 samples. The concentrations ranged from 26 pCi/liter to 905 pCi/liter. No other gamma emitting nuclides were detected. (Table B-1.5 and B-1.6, Appendix B).

APPENDIX A LOCATION DESIGNATION OF THE ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

TABLE A-1: Radiological Groundwater Protection Program - Sampling Locations, Clinton Power Station, 2006 Site Site Type B-3 Unit 2 Pit CL-1A Unit 2 Pit CL-1B Unit 2 Pit CL-1C Unit 2 Pit CL-1 D Unit 2 Pit CL-1E Unit 2 Pit MW-1 Unit 2 Pit MW-CL-121 Monitoring Well MW-CL-131 Monitoring Well MW-CL-13S Monitoring Well MW-CL-14S Monitoring Well MW-CL-151 Monitoring Well MW-CL-1 5S Monitoring Well MW-CL-16S Monitoring Well MW-CL-17S Monitoring Well MW-CL-181 Monitoring Well MW-CL-18S Monitoring Well MW-CL-19S Monitoring Well MW-CL-2 Monitoring Well MW-CL-20S Monitoring Well MW-CL-21 S Monitoring Well MW-CL-22S Monitoring Well MW-CL-23S Monitoring Well MW-CL-321S Monitoring Well SW-CL-1 Surface Water SW-CL-2 Surface Water SW-CL-4 Surface Water SW-CL-5 Surface Water SW-CL-6 Surface Water SW-CL-7 Surface Water A-1

APPENDIX B DATA TABLES OF THE ANNUAL RADIOLOGICAL GROUNDWATER PROTECTION PROGRAM REPORT (ARGPPR)

TABLE B-1.1 CONCENTRATIONS OF TRITIUM IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/-2 SIGMA COLLECTION SITE DATE B-3 05/24/06 < 170 B-3 10/11/06 < 182

CL-lA 06/27/06 < 182

CL-1B 06/27/06 < 179

CL-1C 06/27/06 < 179

CL-1D 06/27/06 227 - 126*

CL-1E 06/27/06 < 188

MW-i 05/25/06 < 167 MW-1 10/12/06 < 182

MW-CL-121 05/23/06 < 178 MW-CL-121 10/11/06 < 181

MW-CL-131 05/08/06 < 223 (1)

MW-CL-131 05/08/06 < 186 * (1)

MW-CL-131 05/23/06 < 175 MW-CL-131 10/11/06 < 183

MW-CL-13S 05/08/06 < 184 MW-CL-1 3S 05/08/06 < 200 MW-CL-13S 05/23/06 230 + 114 MW-CL-13S 10/11/06 < 185 MW-CL-14S 05/24/06 201 + 107 MW-CL-14S 10/10/06 < 181

MW-CL-1 51 05/23/06 < 173 MW-CL-151 10/11/06 < 180

MW-CL-15S 05/23/06 < 173 MW-CL-15S 10/11/06 < 173

MW-CL-16S 05/24/06 < 200 MW-CL-16S 10/10/06 < 177

MW-CL-17S 05/25/06 < 169 MW-CL-17S 10/10/06 < 168

MW-CL-181 05/23/06 < 167 MW-CL-181 10/11/06 < 182

MW-CL-18S 05/23/06 < 170 MW-CL-18S 10/10/06 < 182 MW-CL-19S 05/23/06 < 177 MW-CL-19S 10/10/06 < 180

MW-CL-2 05/25/06 < 169 MW-CL-2 10/12/06 < 183

MW-CL-20S 05/23/06 < 172 MW-CL-20S 10/12/06 < 181

MW-CL-21S 08/04/06 545 +/- 138*

MW-CL-21S 10/12/06 530 +/- 126*

MW-CL-21S 10/12/06 497 +/- 150*

MW-CL-22S 08/04/06 < 175

MW-CL-22S 10/10/06 < 182

MW-CL-23S 10/10/06 < 184

MW-CL-321S 10/12/06 409 +/- 117*

MW-CL-321S 10/12/06 559 +/- 157*

INDICATES DISTILLED ANALYSIS (1) MDC REQUIREMENT MISSED DUE TO COLOR OF SAMPLE. SAMPLE REANALYZED BY DISTILLATION METHOD MET REQUIRED 200 pCi/liter LLD REQUIREMENT (<186)

B-I

TABLE B-I.1 CONCENTRATIONS OF TRITIUM IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE SW-CL-1 05/23/06 < 179 SW-CL-1 10/09/06 < 171 SW-CL-2 05/24/06 < 170 SW-CL-2 10/09/06

172 SW-CL-4 05/24/06

170 SW-CL-4 10/09/06 < 170 SW-CL-5 05/24/06 < 170 SW-CL-5 10/09/06 < 171 SW-CL-6 05/24/06 < 170 SW-CL-6 10/09/06 < 172 SW-CL-7 05/24/06 < 169 SW-CL-7 10/09/06

182

INDICATES DISTILLED ANALYSIS B-2

TABLE B-1.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE I

MW-CL-321S 10/12/06 559 +/- 157" MW-CL-21 S 08/04/06 545 +/- 138*

MW-CL-21 S 10/12/06 530 +/- 126*

MW-CL-21 S 10/12/06 497 +/- 150" MW-CL-321 S 10/12/06 409 +/- 117" MW-CL-13S 05/23/06 230 +/- 114 CL-1 D 06/27/06 227 +/- 126*

MW-CL-131 05/08/06 < 223 (1)

MW-CL-14S 05/24/06 201 +/- 107 MW-CL-13S 05/08/06 < 200 MW-CL-16S 05/24/06 < 200 CL-1 E 06/27/06 < 188

MW-CL-1 31 05/08/06 < 186 * (1)

MW-CL-1 3S 10/11/06 < 185 MW-CL-1 3S 05/08/06 < 184 MW-CL-23S 10/10/06 < 184

MW-CL-131 10/11/06 < 183

MW-CL-2 10/12/06 < 183

B-3 10/11/06 < 182

CL-iA 06/27/06 < 182

MW-i 10/12/06 < 182

MW-CL-181 10/11/06 < 182

MW-CL-18S 10/10/06 < 182 MW-CL-22S 10/10/06 < 182

SW-CL-7 10/09/06 < 182

MW-CL-121 10/11/06 < 181 MW-CL-14S 10/10/06 < 181

MW-CL-20S 10/12/06 < 181

MW-CL-151 10/11/06 < 180

MW-CL-19S 10/10/06 < 180

CL-1 B 06/27/06 < 179

CL-1C 06/27/06 < 179

SW-CL-1 05/23/06 < 179 MW-CL-121 05/23/06 < 178 MW-CL-16S 10/10/06 < 177

MW-CL-19S 05/23/06 < 177 MW-CL-131 05/23/06 < 175 MW-CL-22S 08/04/06 < 175

MW-CL-1 51 05/23/06 < 173 MW-CL-1 5S 05/23/06 < 173 MW-CL-1 5S 10/11/06 < 173

MW-CL-20S 05/23/06 < 172 SW-CL-2 10/09/06 < 172 SW-CL-6 10/09/06 < 172

SW-CL-1 10/09/06 < 171

SW-CL-5 10/09/06 < 171

B-3 05/24/06 < 170

INDICATES DISTILLED ANALYSIS (1) MDC REQUIREMENT MISSED DUE TO COLOR OF SAMPLE. SAMPLE REANALYZED BY DISTILLATION METHOD MET REQUIRED 200 pCi/liter LLD REQUIREMENT (<186)

B-3

TABLE B-1.2 HIGHEST TO LOWEST CONCENTRATIONS OF TRITIUM IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE MW-CL-18S 05/23/06

170 SW-CL-2 05/24/06 < 170 SW-CL-4 05/24/06 < 170 SW-CL-4 10/09/06 < 170 SW-CL-5 05/24/06 < 170 SW-CL-6 05/24/06 < 170 MW-CL-1 7S 05/25/06 < 169 MW-CL-2 05/25/06 < 169 SW-CL-7 05/24/06 < 169 MW-CL-17S 10/10/06 < 168 MW-i 05/25/06 < 167 MW-CL-1 81 05/23/06 < 167

INDICATES DISTILLED ANALYSIS B-4

TABLE B-1.3 CONCENTRATIONS OF STRONTIUM IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE CL-SW-CL-7 05/24/06 1.6 +/- 0.8*

INDICATES STRONTIUM-90 FAST B-5

TABLE B-1.4 HIGHEST TO LOWEST CONCENTRATIONS OF STRONTIUM IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE A.

CL-SW-CL-7 05/24/06 1.6 +/- 0.8*

INDICATES STRONTIUM-90 FAST B-6

TABLE B-1.5 CONCENTRATIONS OF GAMMA EMITTERS IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE Be-7 K-40 B-3 05/24/06 99 +/- 41 B-3 10/11/06 463 +/- 16 CL-1A 06/27/06 207 +/- 40 905 +/- 71 CL-1 C 06/27/06 73 +/- 45 738 +/- 81 CL-1D 06/27/06 231 +/- 73 CL-1E 06/27/06 194 +/- 42 187 +/- 59 MW-CL-121 05/23/06 52 +/- 50 MW-CL-14S 10/10/06 64 +/- 55 MW-CL-1 5S 10/11/06 591 +/- 88 MW-CL-18S 10/10/06 26 +/- 19 MW-CL-19S .10/10/06 111 +/- 23 MW-CL-21 S 08/04/06 53 +/- 35 MW-CL-22S ORIG 08/04/06 114 +/- 39 MW-CL-22S DUP DUP 08/04/06 76 +/- 63 MW-CL-22S 10/10/06 134 +/- 30 MW-CL-23S 10/10/06 124 +/- 33 SW-CL-1 10/09/06 155 +/- 59 B-7

TABLE B-1.6 HIGHEST TO LOWEST CONCENTRATIONS OF GAMMA EMITTERS IN UNIT 2 PIT, GROUNDWATER AND SURFACE WATER SAMPLES COLLECTED IN THE VICINITY OF CLINTON POWER STATION, 2006 RESULTS IN UNITS OF PCI/LITER +/- 2 SIGMA COLLECTION SITE DATE Be-7 CL-1A 06/27/06 207 +/- 40 CL-1E 06/27/06 194 +/- 42 CL-1C 06/27/06 73 +/- 45 COLLECTION SITE DATE K-40 CL-1A 06/27/06 905 +/- 71 CL-1 C 06/27/06 738 +/- 81 MW-CL-15S 10/11/06 591 +/- 88 B-3 10/11/06 463 +/- 16 CL-1D 06/27/06 231 +/- 73 CL-1E 06/27/06 187 +/- 59 SW-CL-1 10/09/06 155 +/- 59 MW-CL-22S 10/10/06 134 +/- 30 MW-CL-23S 10/10/06 124 +/- 33 MW-CL-22S 08/04/06 114 +/- 39 MW-CL-19S 10/10/06 111 +/- 23 B-3 05/24/06 99 +/- 41 MW-CL-22S DUP 08/04/06 76 +/- 63 MW-CL-14S 10/10/06 64 +/- 55 MW-CL-21S 08/04/06 53 +/- 35 MW-CL-121 05/23/06 52 +/- 50 MW-CL-18S 10/10/06 26 +/- 19 B-8

U-603816, Annual Radiological Environmental Operating Report

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