ML11123A193

Submittal of 2010 Annual Radiological Environmental Operating Report

ML11123A193
Person / Time
Site:	Wolf Creek
Issue date:	04/27/2011
From:	Sen G Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 11-0129
Download: ML11123A193 (156)

Text

W LF CREEK rNUCLEAR OPERATING CORPORATION Gautam Sen Manager Regulatory Affairs April 27, 2011 RA 11-0129 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: 2010 Annual Radiological Environmental Operating Report Gentlemen:

Enclosed is the Annual Radiological Environmental Operating Report, which is being submitted pursuant to Wolf Creek Generating Station (WCGS) Technical Specification 5.6.2. This report covers radiological environmental monitoring around WCGS for the period of January 1, 2010, through December 31, 2010.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4175, or Ms. Diane Hooper at (620) 364-4041.

Sincerely, Gautam Sen GS/rlt

Enclosure:

2010 Annual Radiological Environmental Operating Report cc: E. E. Collins (NRC), w/e J. R. Hall (NRC), w/e G. B. Miller (NRC), w/e Senior Resident Inspector (NRC), w/e P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831 An Equal Opportunity Employer M/F/HCNET

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION 2010 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT Ad F

April 15, 2011

TABLE OF CONTENTS List of Tables ii List of Figures ii List of Charts ii Executive Summary 1 Introduction 1 I. Program Description 1 I1. Discussion of Results 4 Ill. Program Revisions/Changes 10 IV. Program Deviations 10 V. Interlaboratory Comparison Program Results 11 VI. Comparison to the Radioactive Effluents Release Program 11 Tables 12 Figures 20 Charts 25 Appendix A - Interlaboratory Comparison Program Results A-1 Appendix B - Summary Tables B-1 Appendix C - Individual Sample Results C-1 Air Particulate and Charcoal Filters C-1 Quarterly Air Particulate - Gamma C-13 Surface Water C-21 Ground Water C-29 Drinking Water C-45 Quarterly Drinking Water - Tritium C-53 Shoreline Sediment C-55 Fish C-58 Food/Garden C-65 Feed and Forage C-71 Bottom Sediment C-74 Aquatic Vegetation C-83 Soil C-85 Alligator C-87 Deer C-88 Appendix D - Land Use Census Report D-1

LIST OF TABLES 1 Radiological Environmental Monitoring Program Description 12 2 Sample Location Identifiers, Distances (Miles) and Directions (Sectors) 17 3 OSL Dosimeter Results 19 LIST OF FIGURES 1 Airborne Pathway Sampling Locations 20 2 Direct Radiation Pathway Sampling Locations 21 3 Waterborne Pathway Sampling Locations 22 4 Ingestion Pathway Sampling Locations 23 5 Distant Sampling Locations 24 LIST OF CHARTS 1 Airborne Gross Beta Weekly Results 25 2 Historical Airborne Smoothed Indicator and Control Gross Beta 26 3 OSL Dosimeters - Indicator and Control Locations mR per Standardized 90-day 27 Quarter 4 Historical TLD Nearsite Locations and Control Locations 28 5 Coffey County Lake Surface Water Tritium Data 29 6 Drinking Water Gross Beta (5 years) 30 7 Detected Co-60 Activity in Coffey County Lake Discharge Cove Bottom Sediment 31 8 Detected Cs-137 Activity in Bottom Sediment 32 ii

EXECUTIVE

SUMMARY

Plant-related activation, corrosion, or fission products were not detected during 2010 in airborne particulate and radioiodine filters, ground water, drinking water, broadleaf vegetation, shoreline sediment, crops, aquatic vegetation, bottom sediment, or soil samples. Activation, corrosion or fission products attributable to plant operation were detected during 2010 in surface water, fish, deer, and alligator samples.

Nuclides detected in Radiological Environmental Monitoring Program (REMP) samples were below applicable NRC reporting levels.

Based upon the radiological environmental monitoring program results, it was concluded that station operations had no significant radiological impact on the health and safety of the public or the environment.

INTRODUCTION The 2010 Annual Radiological Environmental Operating Report for Wolf Creek Generating Station (WCGS) covers the period from January 1 through December 31, 2010. WCGS is located in Coffey County, Kansas, approximately five miles northeast of Burlington, Kansas.

Fuel loading commenced at WCGS on March 12, 1985. The operational phase of the REMP began with initial criticality on May 22, 1985, and the first detectable quantities of radioactivity were reported in plant effluents in June 1985.

This report contains a description of the REMP conducted by Wolf Creek Nuclear Operating Corporation (WCNOC), a discussion of monitoring program results, the revisions or changes to the program, program deviations, the Interlaboratory Comparison Program and a comparison to the Radioactive Effluents Release Program. The Interlaboratory Comparison Program results, a summary of results in the Nuclear Regulatory Commission (NRC) Branch Technical Position specified format, the individual sample results, and the Land Use Census Report are included as appendices.

I. PROGRAM DESCRIPTION Radiological environmental monitoring samples were collected according to the schedule in WCGS procedure AP 07B-004, Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program). Radiological environmental monitoring program samples were collected by the WCGS Environmental Management group and were analyzed by Environmental, Inc.

Landauer, Inc. processed the environmental optically stimulated luminescence (OSL) dosimeters. Table 1 identifies the exposure pathway/sample type, number of samples/sample locations, sample collection frequency and type/frequency of analysis. Table 2 lists each sample location's distance and direction from the plant. Samples in addition to those required by the WCGS Offsite Dose Calculation Manual (ODCM) were also obtained and analyzed.

The following is a description of the sampling and analysis program by individual pathways.

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A. Airborne Pathway Low volume air sampling pumps with digital flow meters continuously collected particulate and radioiodine samples on 47 mm glass fiber filters and charcoal canisters, respectively. The filters and charcoal canisters were changed out weekly, labeled, and shipped to Environmental, Inc. for analyses.

Gross beta analyses of the air particulate filters were performed after a nominal 72-hour period to allow the radon and thoron daughter products to decay.

Weekly air particulate filters were combined into quarterly composites for each location and analyzed for gamma emitting isotopes.

Charcoal canisters were routinely counted to determine the presence or absence of 1-131.

Positive indication of 1-131 would have resulted in analysis of each individual charcoal canister.

Air samples were collected from six locations. Indicator locations 2, 37, and 49 are located in the three sectors with the highest ground level deposition constants (D/Q). Air sampling stations are also located in the community of New Strawn (indicator location 32) and a control location near the intersection of 2 0 th Road and Yearling Road (location 53). Supplemental indicator location (location 18) was also sampled during the year. Indicator locations are shown in Figure 1 and the control location is shown in Figure 5.

B. Direct Radiation Pathway Optically stimulated luminescence (OSL) dosimeters were used at 44 locations during the sample year to measure direct radiation. The OSLs were typically positioned roughly 3 to 4 feet above the ground in plastic thermostat boxes. Two OSLs were placed at each designated location. The OSLs were changed out quarterly. Transit dose was measured and subtracted from the ambient dose. Indicator OSL sample locations are illustrated in Figure 2 and control locations are shown in Figure 5. Control locations were 39 (Beto Junction), 48 (Harris) and 53 (near the intersection of 2 0 th Road and Yearling Road).

C. Waterborne Pathway All water samples were analyzed to determine whether gamma emitters were present. In addition to gamma isotopic analysis, radiochemical analysis for 1-131 was performed on drinking water and ground water samples. Gross beta analysis was also performed on drinking water samples. Tritium analysis was performed monthly by liquid scintillation for surface water and quarterly for drinking water. Tritium analysis was also performed on ground water samples. One surface water sample from the SP location was also analyzed for Fe-55. Water sampling locations are shown in Figures 3 and 5.

Monthly grab samples of surface water were collected from John Redmond Reservoir (JRR) as a control location and from the "SP" location, which is located near the spillway of Coffey County Lake, formerly known as Wolf Creek Lake, as an indicator location.

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Quarterly grab samples of ground water were collected from seven wells. Location B-12 is hydrologically up gradient from the site and was used as a control location. Six locations (C-10, C-49, F-i, G-2, J-1 and J-2) are hydrologically down gradient from the site and were used as indicator sample locations.

Drinking water was sampled at the water treatment facilities for the towns of Burlington (control location BW-15) and Iola (indicator location IO-DW). The Burlington facility is located upstream and the Iola facility is located downstream of the confluence of the discharge from Coffey County Lake and the Neosho River. Composite samples were obtained monthly from automatic samplers at each location that collected approximately 27 ml. of drinking water every two hours.

Shoreline sediments were sampled semiannually. Gamma isotopic analyses were performed on the shoreline sediment samples. Shoreline sediment sample locations were the Coffey County Lake discharge cove (DC) indicator location and the JRR control location.

D. Ingestion Pathway Because no sampling locations that produce milk for human consumption were identified within five miles of the plant, milk was not collected during the sample year.

Fish were sampled semiannually from the tail waters of JRR (control, Figure 4) and from Coffey County Lake (indicator, Figure 4). Gamma isotopic analyses were performed on the boneless meat portions of the fish. Several species of game fish and rough fish were sampled. Fish were also analyzed for tritium.

Broadleaf vegetation samples were collected monthly when available during the growing season from four gardens. Three indicator (H-2, N-1 and Q-6) gardens (Figure 4) and one control (D-2) garden (Figure 5) were sampled. Gamma isotopic analyses were performed on all samples.

Crop samples were obtained from two indicator locations (NR-D1 and NR-D2) downstream of the confluence of Wolf Creek and the Neosho River. Two crop samples were obtained from control location NR-UI. Gamma isotopic analysis was performed on each sample. Crop sample locations are identified on Figure 5.

E. Additional Samples Collected (not required by ODCM)

Quarterly, duplicate ground water grab samples were obtained from indicator location C-49 and were labeled L-49. These duplicate samples served as laboratory quality checks. The ground water samples were analyzed for gamma emitters, 1-131, and tritium.

Bottom sediment samples were collected from indicator locations at the Coffey County Lake discharge cove (DC), Environmental Education Area (EEA), Make-Up Discharge Structure (MUDS), Ultimate Heat Sink (UHS), and the control location (JRR). Gamma isotopic analyses were performed on the bottom sediment samples. One sample from the DC and a sample from JRR were also analyzed for Fe-55. Some of these indicator samples were collected as part of a cooperative sampling effort with the Kansas Department of Health and Environment (KDHE).

The sample locations are identified on Figure 3.

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A shoreline sediment sample was collected from indicator location EEA. Gamma isotopic analysis was performed on the sample. This sample was collected as part of a cooperative sampling effort with the KDHE. The sample location is identified on Figure 3.

Aquatic vegetation was collected from indicator locations DC ALT and EEA. Gamma isotopic analyses were performed on the aquatic vegetation samples. These samples were collected as part of a cooperative sampling effort with the KDHE. The sample locations are identified on Figure 3.

Soil was sampled from indicator locations MUDS and EEA. Gamma isotopic analyses were performed on the soil samples. These samples were collected as part of a cooperative sampling effort with the KDHE. The sample locations are identified on Figure 4.

One road-killed deer was sampled from indicator location R2.5. Gamma isotopic analysis and tritium analysis were performed. This sample was collected as part of a cooperative sampling effort with the KDHE. The sample location is identified on Figure 4.

An alligator was sampled from indicator location CCL. Gamma isotopic analysis and tritium analysis were performed. The sample location is identified on Figure 4.

II. DISCUSSION OF RESULTS Analysis results for all pathways are summarized in Appendix B using the format described in Radiological Assessment Branch Technical Position, Revision 1, November 1979 (NRC Generic Letter 79-065). Results for individual samples are listed in Appendix C.

In this section, results are discussed by pathway and analysis type. Monitoring results are compared with control data, preoperational values, sources of radioactivity, and effluent releases when applicable. Trends or seasonal effects are discussed.

A. Airborne Pathway Chart 1 graphically illustrates weekly gross beta results for the sample year. Chart 2 represents the historical smoothed averages of indicator locations and the control locations gross beta data.

Charts 1 and 2 demonstrate how closely the indicator and control locations tracked together.

Chart 2 reveals a seasonal cyclic trend in which gross beta values peak in the winter months (December or January) and decrease to a low point in the spring months (May or June). This trend is expected and is attributed to seasonal meteorological changes, i.e., changes in prevailing winds and precipitation.

The gross beta results of 2010 were compared to pre-operational monitoring results of 1983 and 1984. The weekly gross beta analyses range for 1983 and 1984 was 0.0064 to 0.084 pCi/m 3 . The 2010 weekly gross beta analyses range for all indicator locations was 0.007 to 0.050 pCi/m 3, which was within the 1983 and 1984 pre-operational range. Additionally, the annual mean for indicator locations for 2010 (0.026 pCi/i 3) was lower than the annual mean for 1983 (0.032 pCi/m 3).

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The gross beta results for the indicator locations were also compared to the control location.

The annual mean for indicator locations for 2010 (0.026 pCi/m 3) was the same as the annual mean of the control location (0.026 pCi/m 3). The indicator location with the highest gross beta annual mean was location 49 (0.026 pCi/m 3), which was the same as the annual mean of the control location (0.026 pCi/m 3).

Naturally occurring Be-7 activity was detected, as was the case during pre-operational monitoring. In 1984, the range for Be-7 detected activity was 0.024 to 0.211 pCi/m 3 for indicator locations and the annual mean for indicator locations was 0.069 pCi/m 3 . In 2010, the range for Be-7 detected activity was 0.058 to 0.105 pCi/m 3 for indicator locations and the annual mean for indicator locations was 0.082 pCi/m 3.

The control location annual mean for Be-7 detected activity (0.082 pCi/m 3) was the same as the indicator locations annual mean (0.082 pCi/m 3).

1-131 activity was not detected in the weekly analysis of charcoal filters at any location.

Plant-related activation, corrosion, or fission products were not detected during 2010 in airborne particulate and radioiodine filters and no unusual trends were noted.

B. Direct Radiation Pathway Quarterly OSL dosimeter results for each location are shown in Table 3. Measured values have been converted to a standardized 90-day quarter.

The annual mean of all indicator locations in 2010 was 18.9 mR per standardized 90-day quarter. The annual mean of the control locations in 2010 was 19.7 mR per standardized 90-day quarter.

For pre-operational comparison, in 1981, the annual mean of all indicator locations was 18.9 mR per standardized 90-day quarter and the annual mean for the control locations was 17.1 mR per standardized 90-day quarter. It should be noted that WCGS changed from thermoluminescence dosimeters to optically stimulated luminescence dosimeters in 2008.

The indicator location with the highest annual mean was 47 (25.2 mR per standardized 90-quarter). The close proximity of location 47 to the Radwaste Building is likely the reason direct radiation levels are higher at this location.

Based upon Condition Report 00027489, improvements were made in measuring and subtracting transit dose. As expected, the OSL results have increased for all locations. Chart 3 visibly displays the increase of the OSL results. Chart 3 also displays how closely the indicator and control location OSL dosimeter results are for 2010.

Chart 4 displays the TLD nearsite locations (1, 2, 7-9, 11-14, 18, 26, 27, 29, 30, 37 and 38) and the control locations (locations 39 and 48) for the preoperational years through 2007.

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C. Waterborne Pathway (1) Surface Water Tritium, attributable to WCGS operation, was detected in all surface water samples collected from Coffey County Lake during 2010. Chart 5 illustrates the yearly averages of surface water tritium data for the spillway location. Chart 5 indicates that the average tritium concentration of the Coffey County Lake may have reached equilibrium.

ODCM required lower limits of detection were met and tritium activity was not detected in samples obtained from the control location (JRR).

During pre-operational radiological environmental monitoring, measured radiological activity was not detected in surface water samples.

Tritium was the only activity detected in surface water samples and no unusual trends were noted.

(2) Ground Water ODCM required lower limits of detection were met for 1-131, tritium and gamma isotopic analyses. Radioactivity was not detected in any ground water samples. No unusual trends were noted. Plant-related activation, corrosion or fission products were not detected during 2010 in ground water samples.

(3) Drinking Water Gross beta activity was detected in all drinking water samples collected from the indicator location and the control location. The annual mean of the indicator location gross beta activity (2.8 pCi/L) was similar when compared to the annual mean of the control location gross beta activity (2.9 pCi/L). The 2010 annual means of gross beta activity for both the indicator and control locations were lower than those of the pre-operational monitoring year of 1984. In 1984, the annual mean of the indicator location gross beta activity was 7.5 pCi/L and the annual mean of the control location gross beta activity was 6.4 pCi/L.

Chart 6 illustrates the drinking water gross beta results for the last five years and how closely the gross beta results compared for the indicator and control locations.

ODCM required lower limits of detection were met. Additionally, radionuclides were not detected by the 1-131, Tritium, or gamma isotopic analyses.

Plant-related activation, corrosion, or fission products were not detected during 2010 in drinking water samples and no unusual trends were noted.

(4) Shoreline Sediment Naturally occurring K-40 was detected in all shoreline sediment samples collected from the DC (indicator) and JRR (control) locations. K-40 was also detected during pre-operational shoreline sediment monitoring.

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Cs-137 activity (184.2 +/- 98.8 pCi/kg, dry) was detected in one shoreline sediment sample obtained from the DC indicator location. Cs-1 37 activity (116.8 +/- 31.3 pCi/kg, dry) was also detected in one shoreline sediment sample obtained from the JRR control location.

Cs-137 activity was detected in pre-operational shoreline sediment samples. Cs-137 activity detected in shoreline sediment samples collected from the DC location from 1982 to 1984 was in the range of 224 to 437 pCi/kg, dry. The decay corrected range of pre-operational Cs-137 activity detected is approximately 124 to 235 pCi/kg, dry. The detected Cs-137 activity in the shoreline sediment sample collected at the DC indicator location in 2010 was likely due to fallout since the measured activity is within the decay corrected range of pre-operational Cs-137 detected activity.

ODCM required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2010 in shoreline sediment samples and no unusual trends were noted.

D. Ingestion Pathway (1) Milk Milk was not collected during the sample year since no indicator locations within five miles of the plant were identified during the Land Use Census.

(2) Fish Naturally occurring K-40 activity was detected in all fish samples obtained from the CCL indicator location and the JRR control location. K-40 activity was also detected during pre-operational fish monitoring.

Fish samples were also analyzed for tritium. All fish samples taken from Coffey County Lake had tritium activity detected (7,481 pCi/kg annual mean). The detected tritium activity was attributable to plant operation. An adult consuming 21 kilograms of fish, at the maximum measured tritium concentration (8,358 pCi/kg), would receive a committed effective dose equivalent of 0.011 mRem.

Tritium activity was not detected in the control samples collected from JRR.

No other radionuclides were detected in fish during the year. The ODCM required lower limits of detection were met and no unusual trends were noted.

(3) Broadleaf Vegetation Gamma analyses of broadleaf vegetation samples obtained from indicator and control locations detected naturally occurring gamma emitters Be-7 and K-40. Be-7 and K-40 activity were also detected pre-operationally.

No other radionuclides were detected in broadleaf vegetation during the year. The ODCM required lower limits of detection were met and no unusual trends were noted. Plant-related activation, corrosion, or fission products were not detected during 2010 in broadleaf vegetation samples.

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(4) Crop Samples Gamma analysis detected naturally occurring K-40 activity to be present in all of the samples.

K-40 activity was also detected during pre-operational crop monitoring. K-40 was the only activity detected in crop samples. Plant-related activation, corrosion, or fission products were not detected during 2010 in crop samples and no unusual trends were noted.

E. Additional Samples Collected (not required by ODCM)

(1) Bottom Sediment Naturally occurring K-40 was detected in all of the bottom sediment samples obtained from the indicator locations and the control locations. K-40 activity was also detected during pre-operational bottom sediment monitoring.

Cs-137 activity was detected in seven out of the nine samples obtained from indicator locations (range 40 to 111 pCi/kg, dry). Cs-137 activity was also detected in one sample obtained from the control location (112 pCi/kg, dry). Since the measured Cs-137 concentrations of the indicator location samples were lower than the Cs-137 concentration of the control location, this activity was likely due to fallout and not attributed to plant operation.

Cs-137 activity was detected in pre-operational samples, and the results for 2010 indicator bottom sediment samples were within the pre-operational range. (Cs-137 activity detected in 1981 and 1982 was in the range of 79 to 953 pCi/kg. The decay corrected range of pre-operational Cs-137 activity detected is approximately 40 to 484 pCi/kg.)

Chart 8 plots the Cs-137 detected activity from the discharge cove indicator location and JRR control location bottom sediment samples. The detected Cs-137 activity measured from the discharge cove location reflects a decreasing trend. The Chart 8 trend line indicates that as expected, Cs-137 activity detected at the JRR control location has also been decreasing.

No other radionuclides were detected in bottom sediment samples and no unusual trends were noted.

(3) Aquatic Vegetation Naturally occurring Be-7 and K-40 activity were detected in all aquatic vegetation samples.

Be-7 and K-40 activity were also detected during pre-operational monitoring.

No other radionuclides were detected. Plant-related activation, corrosion, or fission products were not detected during 2010 in aquatic vegetation samples and no unusual trends were noted.

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(4) Shoreline Sediment Naturally occurring K-40 activity was detected in the shoreline sediment sample obtained from the EEA indicator location. K-40 activity was also detected during pre-operational monitoring.

Cs-137 activity (101.9 pCi/kg, dry) was detected in the shoreline sediment sample obtained from the EEA indicator location. Cs-137 activity (116.8 pCi/kg, dry) was also detected in one shoreline sediment sample obtained from the JRR control location. The detected Cs-137 activity at the EEA indicator location was likely due to fallout and is not attributed to plant operation since the measured activity at the control location was slightly higher than the measured activity at the indicator location.

No other radionuclides were detected. Plant-related activation, corrosion, or fission products were not detected and no unusual trends were noted.

(5) Soil Naturally occurring K-40 activity was detected in both of the indicator location soil samples.

K-40 activity was also detected during pre-operational soil monitoring.

Cs-137 activity (336 pCi/kg) was also detected in the EEA indicator location soil sample. This activity is likely due to fallout. Data was reviewed for soil samples collected pre-operationally.

The detected Cs-1 37 activity range from February of 1985 was 255 to 2,160 pCi/kg, dry. The decay corrected range of pre-operational Cs-137 activity detected in soil is approximately 142 to 1,203 pCi/kg. The range of the 2010 detected Cs-137 activity in soil is within the decay corrected pre-operational range.

Plant-related activation, corrosion, or fission products were not detected during 2010 in soil samples and no unusual trends were noted.

(6) Deer Naturally occurring K-40 activity was detected in the deer sample obtained from the indicator location.

The deer sample was also analyzed for tritium. The detected tritium activity (626 pCi/kg, wet) was attributable to plant operation.

No other radionuclides were detected. No unusual trends were identified.

(7) Alligator Naturally occurring K-40 activity was detected in the alligator sample obtained from the indicator location.

The alligator sample was also analyzed for tritium. The detected tritium activity (7,737 pCi/kg, wet) was attributable to plant operation.

No other radionuclides were detected.

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III. PROGRAM REVISIONS/CHANGES Control dosimeter location #48 (Harris) was removed from the REMP and control dosimeter location #53 was added to the REMP. This change was made based upon a comparison that was performed which reflected that there was no significant difference between the two locations.

IV. PROGRAM DEVIATIONS Air Samples The following air sample locations failed to meet the requirement for "continuous sampler operation." As described in footnote (1) of procedure AP 07B-004, Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program), Table 5-1, deviations are permitted from the required sampling schedule due to malfunction of sampling equipment and other legitimate reasons. Discrepancies greater than five percent between Total Military Time and Total Digital Flow Meter Time, which resulted in a loss of air sample collected, are listed in the following table.

Location Sample Period Percent Explanation of Deviation/

Discrepancy/ Condition Report Number/

Hours Comments Unavailable 18 04/26/10 - 05/03/10 50%/81 Equipment Malfunction Condition Report 00025260 (LLDs were attained.)

53 05/11/10 - 05/17/10 79/6/114 Equipment Malfunction Condition Report 00025608 Due to low sample volume, the LLDs for Gross Beta and 1-131 were unattainable.

37 05/17/10 - 05/24/10 12%/21 Power Outage Condition Report 00025712 (LLDs were attained.)

37 06/08/10 - 06/14/10 15%/21 Power Outage Condition Report 00026100 (LLDs were attained.)

32 07/19/10 - 07/26/10 8.9%/14 Voltage Outside of Acceptable Range Condition Report 00026950 (LLDs were attained.)

Drinking Water Samples Drinking water was not continuously collected at the Burlington control sample location during the 09-07-2010 to 10-06-2010 sample period due to an equipment malfunction (faulty float assembly). Approximately 3/4 of a gallon of water was collected before the sampler stopped operating. This sample and a grab sample were submitted to the vendor lab for analysis. The drinking water sampler was replaced with a spare drinking water sampler on the same day of discovery. Condition Report 00028670 was generated to document the condition.

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Ground Water Protection The following information is being provided in association with the Nuclear Energy Institute (NEI) Groundwater Protection Industry Initiative:

Describe offsite ground water or surface water sample results that exceeded the REMP reporting criteria that were voluntarily communicated to State/Local officials during the calendar year- None.

V. INTERLABORATORY COMPARISON PROGRAM RESULTS During 2010, Environmental, Inc., Midwest Laboratory was contracted to perform radiological analysis of environmental samples for WCNOC. The lab participated in the intercomparison studies administered by Environmental Resources Associates. Appendix A is the Interlaboratory Comparison Program Results for Environmental, Inc., Midwest Laboratory.

Intercomparison results, in-house spikes, blanks, duplicates and mixed analyte performance evaluation program results are also contained in Appendix A.

VI. COMPARISON TO THE RADIOACTIVE EFFLUENTS RELEASE PROGRAM As described in the section discussing radioisotopes found in fish from Coffey County Lake, dose that may be received as a result of tritium released from WCGS is comparable with the theoretical doses calculated by the Radioactive Effluent Release Program.

The theoretical doses calculated by the Radioactive Effluent Release Program assume that a person drinks the water from Coffey County Lake and eats the fish from Coffey County Lake.

Based upon these assumptions the dose to man from both pathways was calculated to be 0.111 mRem for 2010.

Using sample data obtained from the REMP, an adult drinking 2 liters per day of surface water from Coffey County Lake, using the average tritium activity (11,428 pCi/L), would receive a committed effective dose equivalent of 0.522 mRem per year. For an adult eating 21 kg of fish per year from Coffey County Lake, using the average tritium activity (7,481 pCi/kg), would receive a committed effective dose equivalent of 0.010 mRem per year. Based upon the REMP results, the dose from both pathways was calculated to be 0.532 mRem per year.

It should be noted that the Coffey County Lake is not a drinking water source. Calculating the dose to man for tritium detected in the Coffey County Lake surface water is for comparison purposes only.

The tritium dose values are being compared on a qualitative basis. It is not expected that the annual doses, as calculated in the Radioactive Effluent Release Report, would compare directly to those calculated from the REMP. The Radioactive Effluent Release Report provides a 'snap shot' of potential dose resulting from the year's releases. The REMP data indicates the accumulated result of releasing tritium into the lake since the start of plant operation.

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TABLE 1 2010 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM DESCRIPTION (SAMPLE COLLECTION SPECIFIED BY ODCM)

EXPOSURE NUMBER OF SAMPLE COLLECTION TYPE AND PATHWAY/ SAMPLES AND FREQUENCY FREQUENCY OF SAMPLE TYPE SAMPLE LOCATIONS ANALYSIS AIRBORNE (See Figures 1 & 5)

Radioiodine and Samples from six Continuous sampler Analyze radioiodine Particulates locations operation with sample canister weekly for collection weekly, or more 1-131 frequently if required, by dust loading.

Samples from locations Analyze particulate near the site boundary filter weekly for in three sectors having gross beta activity; the highest calculated perform quarterly annual average D/Q gamma isotopic (Locations 2, 37, 49 analysis composite and supplemental (by location) location 18 on Figure 1)

Sample from the vicinity of a community having the highest calculated annual average D/Q (Location 32 on Figure 1, New Strawn)

Sample from a control location 9.5 to 18.5 miles distant in a low ranked D/Q sector (Location 53 on Figure 5) 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 12 of 32

TABLE 1 (Cont.)

EXPOSURE NUMBER OF SAMPLE COLLECTION TYPE AND PATHWAY/ SAMPLES AND FREQUENCY FREQUENCY OF SAMPLE TYPE SAMPLE LOCATIONS ANALYSIS DIRECT (See Figures 2 & 5)

RADIATION 40 routine monitoring Quarterly Gamma dose stations with two or quarterly more dosimeters measuring dose continuously, placed as follows:

An inner ring of stations, one in each meteorological sector 0-3 mile range from the site (Locations 1, 7, 9, 11-13, 18, 26,27,29, 30, 37, 38, 46, 47, & 49 on Figure 2).

An outer ring of stations, one in each meteorological sector in the 3 to 5 mile range from the site (Locations 4, 5,15-17,19, 22-25, 32, 34-36, 50 & 51 on Figure 2). Four sectors

[A, B, G & J] contain an additional station (Locations 2, 8, 14 &

20).

The balance of the stations to be placed in special interest areas such as population centers (Locations 23, 32 & 52), nearby residences 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 13 of 32

TABLE 1 (Cont.)

EXPOSURE NUMBER OF SAMPLE COLLECTION TYPE AND PATHWAY/ SAMPLES AND FREQUENCY FREQUENCY OF SAMPLE TYPE SAMPLE LOCATIONS ANALYSIS DIRECT RADIATION (cont.)

(many locations are riear a residence),

s schools (Locations 23 k52), Environmental EEducation Area (44),

ýCL Public Fishing

,rea Cireas(46) and in two C to serve as

ontrol stations 10-20 rniles distant from the

ite (Locations 39 and i3 on Figure 5).

WATERBORNE( See Figure 3)

Surface One sample upstream Monthly grab sample Monthly gamma (Location JRR on isotopic analysis and Figure 3) and one composite for tritium sample downstream analysis quarterly (Location SP on Figure 3).

Ground Samples from one or Quarterly grab sample Quarterly gamma two sources only if isotopic and tritium likely to be affected. analysis Indicator samples at locations hydrologically down gradient of the site (Locations C-10, C-49, F-1, G-2, J-1 and J-2 on Figure 3);

control sample at a location hydrologically up gradient of the site (Location B-12 on Figure 3).

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 14 of 32

TABLE 1 (Cont.)

EXPOSURE NUMBER OF SAMPLE COLLECTION TYPE AND PATHWAY/ SAMPLES AND FREQUENCY FREQUENCY OF SAMPLE TYPE SAMPLE LOCATIONS ANALYSIS WATERBORNE (cont.)

Drinking Sample of municipal Monthly Composite Monthly gamma water supply at an isotopic analysis and indicator location gross beta analysis downstream of the site of composite (Location IO-DW on sample. Quarterly Figure 5); control tritium analysis of sample from location composites.

upstream of the site (Location BW-15 on Figure 3).

Shoreline One sample from the Semiannually Semiannual gamma Sediment vicinity of Coffey isotopic analysis County Lake discharge cove (Location DC on Figure 3); control sample from John Redmond Reservoir (Location JRR on Figure 3).

INGESTION (See Figures 4 & 5)

Milk Samples from milking Semimonthly April to Gamma isotopic animals at three November; monthly analysis and 1-131 indicator locations December-March analysis of each within 5 miles of the sample site having the highest dose potential (currently there are no locations producing milk for human consumption within 5 miles of the site); one sample from a control location greater than 10 miles from the site if indicator locations are sampled.

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 15 of 32

TABLE 1 (Cont.)

EXPOSURE NUMBER OF SAMPLE COLLECTION TYPE AND PATHWAY/ SAMPLES AND FREQUENCY FREQUENCY OF SAMPLE TYPE SAMPLE LOCATIONS ANALYSIS INGESTION (cont.)

Fish Indicator samples of 1 Semiannually Gamma isotopic to 3 recreationally analysis on edible important species from portions Coffey County Lake; control samples of similar species from John Redmond Reservoir spillway (Figure 4).

Broadleaf Samples of available Monthly when available Gamma isotopic Vegetation broadleaf vegetation analysis on edible from two indicator portions locations (using the criteria from the "Land Use Census" section) with highest calculated annual average D/Q (Locations Q-6 and N-1 and alternate locations B-i, H-2 and R-2 on Figure 4); sample of similar broadleaf vegetation from a control location 9.5 to 18.5 miles distant in a low ranked D/Q sector (Location D-2 on Figure 5).

Irrigated Crops Sample of crops At time of harvest Gamma isotopic irrigated with water analysis on edible from the Neosho River portions downstream of the Neosho River - Wolf Creek confluence (Location NR-D1 and NR-D2 on Figure 5).

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 16 of 32

TABLE 2 SAMPLE LOCATION IDENTIFIERS, DISTANCES (Miles) AND DIRECTIONS (Sectors)

Sample Type Location Distance from Direction Sector Identifier Reactor Air Particulates and Radioiodine 2 2.7 N A 18 3.0 SSE H 32 3.1 WNW P 37 2.0 NNW R 49 0.8 NNE B 53 10.8 ENE D Dosimeters 1 1.4 N A 2 2.7 N A 4 4.1 NNE B 5 4.1 NE C 7 2.1 NE C 8 1.7 NNE B 9 2.0 ENE D 11 1.7 E E 12 1.9 ESE F 13 1.6 SE G 14 2.5 SE G 15 4.6 ESE F 16 4.3 E E 17 3.7 SE G 18 3.0 SSE H 19 3.9 SSE H 20 3.3 S J 22 3.9 SSW K 23 4.3 SW L 24 4.1 WSW M 25 3.4 W N 26 2.4 WSW M 27 2.2 SW L 29 2.7 SSW K 30 2.5 W N 32 3.1 WNW P 34 4.4 NW Q 35 4.6 NNW R 36 4.2 N A 37 2.0 NNW R 38 1.2 NW Q 39 13.1 N A 41 0.8 NNW R 42 0.8 SSE H 43 0.7 WNW P 44 3.0 NNW R 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 17 of 32

TABLE 2 (Cont.)

SAMPLE LOCATION IDENTIFIERS, DISTANCES (Miles) AND DIRECTIONS (Sectors)

Sample Type Location Distance from Direction Sector Identifier Reactor Dosimeters 46 1.6 WNW P 47 0.16 S J 48 14.7 ENE D 49 0.8 NNE B 50 3.6 ENE D 51 4.0 S J 52 3.6 SW L 53 10.8 ENE D Surface Water JRR 3.7 W N SP 3.2 SSE H Ground Water B-12 1.9 NNE B C-10 2.7 W N C-49/L-49 2.8 SW L F-1 2.5 ESE F G-2 3.6 SE G J-1 3.8 S J J-2 4.3 S J Drinking Water BW-15 3.9 SW L 1O-DW 26.1 SSE H Shoreline Sediment DC 0.8 WNW P EEA 3.0 NNW R JRR 3.6 W N Fish CCL 0.6 E to NNW E to R JRR 3.7 W N Food/Garden D-2 14.8 ENE D H-2 3.0 SSE H N-1 2.4 W N Q-6 2.4 NW Q Crops NR-D1 8.9 S J NR-D2 11.5 S J NR-U1 4.0 SSW K Bottom Sediment DC 0.9 WNW P JRR 3.7 W N MUDS 1.5 WNW P UHS 0.6 E E Aquatic Vegetation DC ALT 1.5 NW Q EEA 3.0 NNW R Soil EEA 3.0 NNW R MUDS 1.5 WNW P Meet (Alligator) CCL 1.5 WNW P Meet (Deer) R2.5 2.5 NNW R 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 18 of 32

TABLE 3 OSL Dosimeter Results (mR/Standardized 90-day Quarter)

Location Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 Total Annual (mR) (mR) (mR) (mR) Exposure (mR) 1 19.1 20.1 20.8 21.0 81.0 2 18.2 15.5 17.8 16.2 67.7 4 18.8 18.2 20.0 21.6 78.6 5 16.1 18.2 19.8 17.7 71.8 7 15.2 16.6 19.1 21.5 72.4 8 18.0 21.4 21.8 22.4 83.6 9 17.4 16.6 16.4 17.4 67.8 11 19.1 20.5 22.4 22.9 84.9 12 19.7 18.8 17.6 19.6 75.7 13 19.7 17.5 18.2 22.7 78.1 14 20.3 18.4 22.5 20.5 81.7 15 20.9 20.9 19.0 19.3 80.1 16 18.2 15.9 19.0 18.0 71.1 17 16.1 20.0 22.3 18.5 76.9 18 19.9 17.3 16.8 18.4 72.4 19 18.7 19.1 20.1 19.8 77.7 20 19.2 16.8 20.0 20.7 76.7 22 19.2 21.8 21.7 23.3 86.0 23 18.3 20.0 21.4 22.2 81.9 24 15.6 20.0 19.2 19.5 74.3 25 15.6 15.5 15.5 17.7 64.3 26 17.6 17.3 18.2 18.6 71.7 27 17.0 20.4 17.1 20.4 74.9 29 15.4 16.4 13.8 14.6 60.2 30 19.8 18.2 21.4 18.6 78.0 32 17.2 17.3 17.8 17.5 69.8 34 18.1 20.4 21.5 22.2 82.2 35 18.8 17.3 17.6 20.9 74.6 36 18.2 20.0 19.2 20.9 78.3 37 17.2 20.4 20.1 18.9 76.6 38 21.9 21.4 20.1 20.7 84.1 39 18.6 19.1 17.9 19.8 75.4 41 18.0 18.4 19.1 18.3 73.8 42 13.2 11.0 11.0 12.4 47.6 43 11.5 11.9 11.6 12.4 47.4 44 17.7 21.8 20.4 20.4 80.3 46 19.2 19.5 21.4 20.9 81.0 47 27.4 22.3 21.8 29.2 100.7 48 18.2 19.6 18.4 21.6 77.8 49 18.8 18.2 17.3 18.0 72.3 50 19.8 22.2 22.0 23.2 87.2 51 15.9 19.5 16.2 16.6 68.2 52 17.7 19.1 21.4 24.9 83.1 53 18.8 20.5 22.7 21.1 83.1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 19 of 32

FIGURE 1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 20 of 32

FIGURE 2 DIRECT RADIATION PATHWAY SAMPLING LOCATIONS 9 = DOSIMETER LOCATIONS 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 21 of 32

FIGURE 3 WATERBORNE PATHWAY SAMPLING LOCATIONS

• = DRINKING WATER A = SURFACE WATER

• = GROUND WATER * = SHORELINE SEDIMENT

,= BOTTOM SEDIMENT S= AQUATIC VEGETATION 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 22 of 32

FIGURE 4 INGESTION PATHWAY SAMPLING LOCATIONS A = FISH (JRR) l: BROADLEAF VEGETATION *= SOIL % = ALLIGATOR FISH (CCL) TERRESTRIAL VEGETATION -DEER 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 23 of 32

FIGURE 5 A

D DISTANT SAWPLNG LOCON

• : Dosimeter w=D

• = AIRBORNE PARTICULATE & RADIOIODINE = A GETATION/

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 24 of 32

CHART 1 2010 Airborne Gross Beta Weekly Results 0.060 0.050 z

0.040 0 M a) 0 +

ci) A U) 0.030 0 CA U) 0.020 (D

0.010 I a 0.000 1 1. 1 1 1 1 . .

0 4 8 12 16 20 24 28 32 36 40 44 48 52 m Location 2

• Location 18 + Location 32 A Location 37 , Location 49 --- Location 53 (Control) 2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 25 of 32

CHART 2 0.060 E

0 0.050 Z

CU 0.040 CD

\1.

0.030 0

CD 0.020 0

E C/)

0.010 N

0ý Z~0 40 40

- - - Smoothed Avg. Indicator Locations -Smoothed Avg. Control Location (40)

Smoothed Avg. Control Location (48) -Smoothed Avg. Control Location (53) 2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 26 of 32

CHART 3 OSL Dosimeters - Indicator and Control Locations mR per Standardized 90-Day Quarter 22.0 20.0- OSL Transit Dose methodology was changed in 2010 based upon Condition Report 00027489.

18.0-16.0 14.0 cr E

12.0 10.0-8.0-6.0-4.0 2008/1 2008/2 2008/3 2008/4 2009/1 2009/2 2009/3 2009/4 2010/1 2010/2 2010/3 2010/4 Year/Quarter

-*-Indicator Locations Standardized 90-Day Quarter (mR)

-- Control Locations Standardized 90-Day Quarter (mR) 2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 27 of 32

CHART 4 Historical TLD Nearsite Locations and Control Locations 32.0 30.0 Elevated resul 28.0 longer exp 26.0 24.0 E 22.0 0 20.0 "

18.0

• 16.0-14.0 11 12.0 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

• Avg. of Nearsite Locations & Avg. of Control Locations

-Moving Avg. of Nearsite Locations (2 period) - - - Moving Avg. of Control Locations (2 period) 2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 28 of 32

CHART 5 Coffey County Lake Surface Water Tritium Data 16,000 14,000 12,000 10,000 CL 8,000 0.

0.

6,000 4,000 2,000 04-1987 1992 1997 2002 2007 I--s- Yearly Average of Spillway Location -Polynomial Tre~ndline 2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 29 of.32

CHART 6 Drinking Water Gross Beta (5 years) 9 8

7 6

C) 5

.S a) 4 Ua U) 0 3 2

1 00 0z 0z 0 0ý

.0 0 Q, 0 z0000 BW15 (Control) - -IODW (Indicator) 2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 30 of 32

CHART 7 Detected Co-60 Activity in Coffey County Lake Discharge Cove Bottom Sediment 2,500 2,000 1,500 CL 1,000 500 0

r- 1o 0) 0 - CM co It 10 co f". 1o 0) 0 - CM co It O (0 r- 00 M) 1O co Go 0) C) MCM ) 0)

M ) C) C) M) 0 0 0 0 0 0 0 0 0 0

,) 0) M) C) C) 0) 0) C) M) C) 0) C) C) 0 0 0 0 0 0 0 0 0 0 w0 0 0

0 0 (0

0 10 0

1O0 0

o 0

(0 0

D 0

(00 0

1 0 0 0 (0 0

1o 0

(D 0

1o 0

w 0 0 0 10 0 0 1

0 0

-- Co-60 - Polynomial Trendlinej 2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 31 of 32

CHART8 Detected Cs-1 37 Activity in Bottom Sediment 1,000 900 800 700 600 500 CL 400 300 200 100 0

N- ~ N~ LO r- M 0- COt M~ L1-0 MO 0)0 N' N CM It M (0 N- N,- MO MO) 00 00 0 0000 00 0 0 LA N- C C 0(0(0(0 0 - C 0 0N

• N-N-' LAO 0) 0 (o00 0C LA LDO lA Tr0ndlA (DC) ..... La Tred (JRR)

• DC Cs-i137

• JRR Cs-137 -Polynomial Trendline (DC) ------ Polynomial Trendline (JRR)~

2010 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 32 of 32

Environmental, Inc.

Midwest Laboratory 700 Landwehr Road , Northbrook. IL 60062-2310 phone (847) 564-0700 - fax (847) 564-4517 APPENDIX A INTERLABORATORY COMPARISON PROGRAM RESULTS NOTE: Environmental Inc., Midwest Laboratory participates in intercomparison studies administered by Environmental Resources Associates, and serves as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada. Results are reported in Appendix A. TLD Intercomparison results, in-house spikes, blanks, duplicates and mixed analyte performance evaluation program results are also reported. Appendix A is updated four times a year; the complete Appendix is included in March, June, September and December monthly progress reports only.

January, 2010 through December, 2010

Appendix A Interlaboratory Comparison Proqram Results Environmental, Inc., Midwest Laboratory has participated in interlaboratory comparison (crosscheck) programs since the formulation of it's quality control program in December 1971. These programs are operated by agencies which supply environmental type samples containing concentrations of radionuclides known to the issuing agency but not to participant laboratories. The purpose of such a program is to provide an independent check on a laboratory's analytical procedures and to alert it of any possible problems.

Participant laboratories measure the concentration of specified radionuclides and report them to the issuing agency. Several months later, the agency reports the known values to the participant laboratories and specifies control limits. Results consistently higher or lower than the known values or outside the control limits indicate a need to check the instruments or procedures used.

Results in Table A-1 were obtained through participation in the environmental sample crosscheck program administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada.

Table A-2 lists results for thermoluminescent dosimeters (TLDs), via International Intercomparison of Environmental Dosimeters, when available, and internal laboratory testing.

Table A-3 lists results of the analyses on in-house "spiked" samples for the past twelve months. All samples are prepared using NIST traceable sources. Data for previous years available upon request.

Table A-4 lists results of the analyses on in-house "blank" samples for the past twelve months. Data for previous years available upon request.

Table A-5 lists REMP specific analytical results from the in-house "duplicate" program for the past twelve months. Acceptance is based on the difference of the results being less than the sum of the errors.

Complete analytical data for duplicate analyses is available upon request.

The results in Table A-6 were obtained through participation in the Mixed Analyte Performance Evaluation Program.

Results in Table A-7 were obtained through participation in the environmental sample crosscheck program administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the Environmental Measurement Laboratory Quality Assessment Program (EML).

Attachment A lists the laboratory precision at the 1 sigma level for various analyses. The acceptance criteria in Table A-3 is set at +/- 2 sigma.

Out-of-limit results are explained directly below the result.

Al

Attachment A ACCEPTANCE CRITERIA FOR "SPIKED" SAMPLES LABORATORY PRECISION: ONE STANDARD DEVIATION VALUES FOR VARIOUS ANALYSESa One standard deviation Analysis Level for single determination Gamma Emitters 5 to 100 pCi/liter or kg 5.0 pCi/liter

> 100 pCi/liter or kg 5% of known value Strontium-89b 5 to 50 pCi/liter or kg 5.0 pCi/liter

> 50 pCi/liter or kg 10% of known value Strontium-90b 2 to 30 pCi/liter or kg 5.0 pCi/liter

> 30 pCi/liter or kg 10% of known value Potassium-40 - 0.1 g/liter or kg 5% of known value Gross alpha 5 20 pCi/liter 5.0 pCi/liter

> 20 pCi/liter 25% of known value Gross beta 5 100 pCi/liter 5.0 pCi/liter

> 100 pCi/liter 5% of known value Tritium < 4,000 pCi/liter +/- 1r =

0 0 933 169.85 x (known)

> 4,000 pCi/liter 10% of known value Radium-226,-228  ? 0.1 pCi/liter 15% of known value Plutonium ->0.1 pCi/liter, gram, or sample 10% of known value Iodine-131, :5 55 pCi/liter 6 pCi/liter Iodine-129b > 55 pCi/liter 10% of known value Uranium-238, -535 pCi/liter 6 pCi/liter Nickel-63b > 35 pCi/liter 15% of known value Technetium-99b Iron-55b 50 to 100 pCi/liter 10 pCi/liter

> 100 pCi/liter 10% of known value Other Analyses b 20% of known value a From EPA publication, "Environmental Radioactivity Laboratory Intercomparison Studies Program, Fiscal Year, 1981-1982, EPA-600/4-81-004.

b Laboratory limit.

A2

TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits Acceptance STW-1205 04/05/10 Sr-89 63.0 +/- 5.7 60.4 48.6 - 68.2 Pass STW-1205 04/05/10 Sr-90 37.4 +/- 2.4 41.3 30.4 - 47.4 Pass STW-1206 04/05/10 Ba-1 33 63.6 +/- 3.3 65.9 54.9 - 72.5 Pass STW-1206 04/05/10 Co-60 83.3 +/- 2.9 84.5 76.0 - 95.3 Pass STW-1206 04/05/10 Cs-134 71.0 +/- 3.4 71.6 58.4 - 78.8 Pass STW-1206 04/05/10 Cs-137 145.5 +/- 5.1 146.0 131.0 - 163.0 Pass STW-1206 04/05/10 Zn-65 194.9 +/- 7.8 186.0 167.0 - 219.0 Pass STW-1207 04/05/10 Gr. Alpha 26.5 1i.7 32.9 16.9 -42.6 Pass STW-1207 04/05/10 Gr. Beta 34.5 +/- 1.6 37.5 24.7 - 45.0 Pass STW-1208 04/05/10 1-131 22.7 +/- 0.8 26.4 21.9 -31.1 Pass STW-1209 04/05/10 Ra-226 15.2 +/-0.7 14.6 10.9 - 16.8 Pass STW-1209 04/05/10 Ra-228 15.6 +/- 1.8 15.1 10.1 -18.3 Pass STW-1209 04/05/10 Uranium 59.5 +/-0.7 62.3 50.7 -69.1 Pass STW-1210 04/05/10 H-3 12955 +/-332 12400.0 10800 - 13600 Pass STW-1224 10/04/10 Sr-89 65.3 +/- 5.7 68.5 55.8 - 76.7 Pass STW-1224 10/04/10 Sr-90 39.9 +/- 2.3 43.0 31.7 -49.3 Pass STW-1225 10/04/10 Ba-133 67.2 +/- 4.3 68.9 57.5 - 75.8 Pass STW-1225 10/04/10 Co-60 53.2 +/- 3.3 53.4 48.1 -61.3 Pass STW-1225 10/04/10 Cs-1 34 47.3 +/- 5.1 43.2 34.5 - 47.5 Pass STW-1225 10/04/10 Cs-137 118.0 +/-5.9 123.0 111.0 - 138.0 Pass STW-1225 10/04/10 Zn-65 107.0 +/- 8.7 102.0 91.8 - 122.0 Pass STW-1226 10/04/10 Gr. Alpha 30.7 +/- 2.9 42.3 21.9-53.7 Pass STW-1226 10/04/10 Gr. Beta 32.7 +/- 0.8 36.6 24.0 - 44.2 Pass STW-1227 10/04/10 1-131 28.6 + 1.1 27.5 22.9 - 32.3 Pass STW-1228 10/04/10 Ra-226 11.8 +/-0.6 11.4 8.5-13.2 Pass STW-1228 10/04/10 Ra-228 12.0 +/- 1.8 9.9 6.4 - 12.3 Pass STW-1228 10/04/10 Uranium 34.8 +/- 0.4 36.8 29.8 -41.0 Pass STW-1229 10/04/10 H-3 13682 +/-352 12900.0 11200 - 14200 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.

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

Al-1

TABLE A-2. Crosscheck program results; Thermoluminescent Dosimetry, (TLD, CaSO4 : Dy Cards).

mR Lab Code Date Known Lab Result Control Description Value +/- 2 sigma Limits Acceptance Environmental, Inc.

2010-1 6/8/2010 30 cm. 75.07 90.78 +/- 3.60 52.55 - 97.59 Pass 2010-1 6/8/2010 40 cm. 42.23 50.88 +/- 3.59 29.56 - 54.90 Pass 2010-1 6/8/2010 50 cm. 27.03 32.12 +/- 1.90 18.92 - 35.14 Pass 201071 6/8/2010 60 cm. 18.77 21.80 +/- 0.90 13.14 - 24.40 Pass 2010-1 6/8/2010 70 cm. 13.79 15.38 +/- 1.39 9.65-17.93 Pass 2010-1 6/8/2010 75 cm. 12.01 11.30 +/- 1.07 8.41 -15.61 Pass 2010-1 6/8/2010 80 cm. 10.56 10.90 +/- 0.61 7.39 - 13.73 Pass 2010-1 6/8/2010 90 cm. 8.34 7.84 +/- 0.83 5.84 - 10.84 Pass 2010-1 6/8/2010 100 cm. 6.76 6.61 +/- 0.52 4.73 -8.79 Pass 2010-1 6/8/2010 110 cm. 5.58 4.29 +/- 0.55 3.91 -7.25 Pass 2010-1 6/8/2010 120 cm. 4.69 3.64 +/- 0.33 3.28 - 6.10 Pass 2010-1 6/8/2010 150 cm. 3.00 2.82 +/- 0.84 2.10 - 3.90 Pass 2010-1 6/8/2010 180 cm. 2.09 1.55 +/- 0.23 1.46 -2.72 Pass Environmental, Inc.

2010-2 12/13/2010 100 cm. 4.94 4.65 +/- 0.57 3.46 -6.42 Pass 2010-2 12/13/2010 110 cm. 4.09 3.50 +/- 0.74 2.86-5.32 Pass 2010-2 12/13/2010 120 cm. 3.43 2.68 +/- 0.36 2.40 -4.46 Pass 2010-2 12/13/2010 150 cm. 2.2 1.75 +/- 0.42 1.54 -2.86 Pass 2010-2 12/13/2010 180 cm. 1.53 1.32 +/- 0.52 1.07 -1.99 Pass 2010-2 12/13/2010 40 cm. 30.89 38.56 +/- 2.11 21.62 -40.16 Pass 2010-2 12/13/2010 50 cm. 19.77 23.35 +/- 1.82 13.84 - 25.70 Pass 2010-2 12/13/2010 60 cm. 13.73 14.53 +/- 1.24 9.61 - 17.85 Pass 2010-2 12/13/2010 60 cm. 13.73 15.84 +/- 1.53 9.61 -17.85 Pass 2010-2 12/13/2010 80 cm. 7.72 8.33 +/- 0.74 5.40 - 10.04 Pass 2010-2 12/13/2010 90 cm. 6.1 5.93 +/- 0.73 4.27 -7.93 Pass A2-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 c Activity Limits d Acceptance SPW-12648 1/20/2010 Ra-228 40.04 t 2.99 40.54 28.38 - 52.70 Pass SPW-279 1/27/2010 U-238 4.52 +/- 0.22 4.17 0.00 -16.17 Pass SPW-391 2/4/2010 Ni-63 179.70 t 2.96 209.62 146.73 -272.51 Pass W-21210 2/12/2010 Ra-226 16.05 +/- 0.39 16.77 11.74 - 21.80 Pass W-21710 2/17/2010 Gr. Alpha 17.54 +/- 0.37 20.00 10.00 -30.00 Pass W-21710 2/17/2010 Gr. Beta 42.47 +/- 0.39 45.20 35.20 - 55.20 Pass SPAP-669 2/25/2010 Gr. Beta 45.78 +/- 0.11 49.24 29.54 - 68.94 Pass SPAP-671 2/25/2010 Cs-1 34 10.56 +/- 3.15 10.38 0.38 - 20.38 Pass SPAP-671 2/25/2010 Cs-137 105.36 +/- 3.15 109.20 98.28 - 120.12 Pass SPMI-674 2/25/2010 Co-60 67.38 +/- 5.65 68.79 58.79 - 78.79 Pass SPMI-674 2/25/2010 Cs-134 60.61 +/- 6.28 51.91 41.91 -61.91 Pass

• SPMI-674 2/25/2010 Cs-1 37 173.80 +/- 10.30 163.80 147.42 - 180.18 Pass SPW-676 2/25/2010 Co-60 66.13 +/- 5.22 68.79 58.79 - 78.79 Pass SPW-676 2/25/2010 Cs-1 34 51.54 +/- 5.97 51.91 41.91 -61.91 Pass SPW-676 2/25/2010 Cs-137 179.30 t 9.95 163.80 147.42 - 180.18 Pass SPW-678 2/2512010 H-3 59213.70 +/- 709.90 60407.70 48326.16 - 72489.24 Pass SPF-680 2/25/2010 Cs-134 402.56 +/- 22.40 415.00 373.50 - 456.50 Pass SPF-680 2/25/2010 Cs-137 2267.90 +/- 75.60 2180.00 1962.00 - 2398.00 Pass SPW-682 2/25/2010 Tc-99 29.70 +/- 1.51 32.34 20.34 - 44.34 Pass SPW-2871 4/5/2010 Ra-228 33.91 +/- 2.85 36.80 25.76 - 47.84 Pass W-40510 4/5/2010 Gr. Alpha 20.65 +/- 0.42 20.00 10.00 - 30.00 Pass W-40510 4/5/2010 Gr. Beta 44.72 +/- 0.40 45.20 35.20 - 55.20 Pass SPW-2083 4/28/2010 U-238 4.20 +/- 0.32 4.17 0.00 -16.17 Pass W-51310 5/13/2010 Ra-226 17.04 +/- 0.50 16.77 11.74 - 21.80 Pass SPW-3181 6/17/2010 Tc-99 29.87 +/- 1.09 32.34 20.34 - 44.34 Pass SPW-3272 6125/2010 H-3 5489.00 +/- 224.00 5928.00 4742.40 - 7113.60 Pass SPW-3278 6/25/2010 Fe-55 17054.00 +/- 348.00 19614.00 15691.20 -23536.80 Pass SPW-3280 6/25/2010 C-14 3410.60 +/- 9.75 4738.00 2842.80 - 6633.20 Pass SPAP-3270 6/28/2010 Cs-134 12.24 +/- 3.13 10.38 0.38 - 20.38 Pass SPAP-3270 6/28/2010 Cs-137 103.92 +/- 7.14 109.20 98.28 - 120.12 Pass SPW-3274 6/28/2010 Co-60 67.48 +/- 5.53 65.84 55.84 - 75.84 Pass SPW-3274 6/28/2010 Cs-134 49.55 +/- 6.11 46.38 36.38 - 56.38 Pass SPW-3274 6/28/2010 Cs-137 58.85 +/- 6.54 54.17 44.17 -64.17 Pass SPW-3274 6/28/2010 Sr-90 41.59 +/- 1.83 42.72 34.18 -51.26 Pass SPMI-3276 6/28/2010 Co-60 66.80 +/- 5.25 65.84 55.84 - 75.84 Pass SPMI-3276 6/28/2010 Cs-134 48.20 +/- 3.88 46.38 36.38 - 56.38 Pass SPMI-3276 6/28/2010 Cs-137 62.46 +/- 6.33 54.17 44.17 - 64.17 Pass SPMI-3276 6/28/2010 Sr-90 43.32 +/- 1.63 42.72 34.18 - 51.26 Pass A3-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)3 Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 Activity Limitsc Acceptance SPW-5081 9/9/2010 Tc-99 30.22 +/- 1.06 32.34 20.34 - 44.34 Pass W-90910 9/9/2010 Gr. Alpha 20.95 +/- 0.43 20.00 10.00 -30.00 Pass W-90910 9/9/2010 Gr. Beta 45.20 +/- 0.41 45.20 35.20 - 55.20 Pass W-91010 9/10/2010 Ra-226 17.48 +/- 0.50 16.77 11.74 - 21.80 Pass SPW-2874 9/23/2010 Ra-228 34.60 +/- 2.68 36.80 25.76 -47.84 Pass XWW-5302 10/6/2010 Ba-133 154.13 +/- 8.90 155.21 139.69 - 170.73 Pass XWW-5302 10/6/2010 Co-60 24.65 +/- 4.11 23.28 13.28 -33.28 Pass XWW-5302 10/6/2010 Cs-1 34 14.03 +/- 3.87 13.95 3.95 - 23.95 Pass XWW-5302 10/6/2010 Cs-1 37 61.16 +/- 6.08 59.22 49.22 - 69.22 Pass SPW-6035 10/21/2010 U-238 4.52 +/- 0.20 4.17 0.00 - 16.17 Pass W-1 20110 12/1/2010 Gr. Alpha 20.27 +/- 0.41 20.00 10.00 -30.00 Pass W-120110 12/1/2010 Gr. Beta 46.75 +/- 0.41 45.20 35.20 - 55.20 Pass W-121610 12/16/2010 Ra-226 17.99 +/- 0.43 16.77 11.74 - 21.80 Pass Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/m 3), and solid samples (pCi/g).

b Laboratory codes as follows: W (water), MI (milk), AP (air filter), SO (soil), VE (vegetation),

CH (charcoal canister), F (fish).

c Results are based on single determinations.

" Control limits are established from the precision values listed in Attachment A of this report, adjusted to +/- 2a.

NOTE: For fish, Jello is used for the Spike matrix. For Vegetation; cabbage is used for the Spike matrix.

A3-2

TABLE A-4. In-House "Blank" Samples Concentration (pCi/L)a Lab Code Sample Date Analysisb Laboratory results (4.66ca) Acceptance Type LLD Activityc Criteria (4.66 a)

SPW-12658 Water 1/20/2010 Ra-228 0.79 0.61 + 0.44 2 SPW-280 Water 1/27/2010 U-238 0.18 0.07 +/- 0.13 1 SPW-392 Water 2/4/2010 Ni-63 15.90 -11.80 +/- 9.40 20 W-21210 Water 2/12/2010 Ra-226 0.03 0.06 +/- 0.02 I W-21710 Water 2/17/2010 Gr. Alpha 0.41 0.09 +/- 0.30 1 W-21710 Water 2/17/2010 Gr. Beta 0.73 0.23 +/- 0.52 3.2 SPAP-668 Air Filter 2/25/2010 Gr. Beta 0.11 0.008 +/- 0.002 3.2 SPAP-670 Air Filter 2/25/2010 Cs-134 1.87 100 SPAP-670 Air Filter 2/25/2010 Cs-137 2.31 100 SPMI-672 Milk 2/25/2010 Cs-137 3.52 10 SPMI-672 Milk 2/25/2010 1-131(G) 6.09 20 SPW-675 Water 2/25/2010 Co-60 1.55 10 SPW-675 Water 2/25/2010 Cs-137 2.69 10 SPW-675 Water 2/25/2010 1-131(G) 5.68 20 SPF-679 Fish 2/25/2010 Cs-134 10.94 100 SPF-679 Fish 2/25/2010 Cs-137 18.37 100 SPW-681 Water 2/25/2010 Tc-99 16.11 -10.75 +/- 9.53 10 SPW-2881 Water 4/5/2010 Ra-228 0.89 0.22 +/- 0.44 2 W-40510 Water 4/5/2010 Gr. Alpha 0.40 -0.20 +/- 0.26 1 W-40510 Water 4/5/2010 Gr. Beta 0.75 -0.09 +/- 0.52 3.2 SPW-2084 Water 4/28/2010 U-238 0.14 0.03 t 0.10 1 W-51310 Water 5/13/2010 Ra-226 0.03 0.06 +/- 0.02 1 SPW-3271 Water 6/25/2010 H-3 151.60 -58.10 +/- 71.90 200 SPW-3278 Water 6/25/2010 Fe-55 634.50 256.80 +/- 396.40 1000 SPW-3279 water 6/25/2010 C-14 8.57 -1.84 +/- 5.18 200 SPAP-3269 Air Filter 6/28/2010 Cs-134 1.71 100 SPAP-3269 Air Filter 6/28/2010 Cs-1 37 2.42 100 SPW-3273 Water 6128/2010 Co-60 1.64 10 SPW-3273 Water 6/28/2010 Cs-1 34 3.89 10 SPW-3273 Water 6/28/2010 Cs-1 37 4.29 10 SPW-3273 water 6/25/2010 Sr-90 0.50 -0.04 +/- 0.22 1 SPMI-3275 Milk 6/28/2010 Cs-134 3.33 10 SPMI-3275 Milk 6/28/2010 Cs-137 3.82 10 SPMI-3275 Milk 6/28/2010 1-131(G) 3.71 20 SPMI-3275 Milk 6/28/2010 Sr-90 0.58 0.81 +/- 0.36 1 A4-1

TABLE A-4. In-House "Blank" Samples Concentration (pCi/L)a Lab Code Sample Date Analysisb Laboratory results (4 .66a) Acceptance Type LLD ActivityO Criteria (4.66 (5)

SPW-5080 Water 9/9/2010 Tc-99 2.15 -0.71 +/- 1.29 10 W-9091 0 Water 9/9/2010 Gr. Alpha 0.39 0.10 +/- 0.28 1 W-9091 0 Water 9/9/2010 Gr. Beta 0.78 -0.09 +/- 0.55 3.2 W-91010 Water 9/10/2010 Ra-226 0.04 0.07 +/- 0.03 1 SPW-2884 Water 9/23/2010 Ra-228 0.71 1.14 +/- 0.46 2 SPW-6036 Water 10121/2010 U-238 0.11 0.07 +/- 0.10 W-120110 Water 12/1/2010 Gr. Alpha 0.43 -0.05 +/- 0.29 W-120110 Water 12/1/2010 Gr. Beta 0.75 -0.08 +/- 0.53 3.2 W-121610 Water 12/16/2010 Ra-226 0.03 0.04 +/- 0.02 1 BKW-120610 water 12/6/2010 Ba-1 33 5.66 10 BKW-120610 water 12/6/2010 Co-60 4.49 10 BKW-120610 water 12/6/2010 Cs-134 4.41 10 10 BKW-120610 water 12/6/2010 Cs-137 5.33 10 W-121610 Water 12/16/2010 Ra-226 0.03 0.04 + 0.02 a Liquid sample results are reported in pCi/Liter, air filters( pCilfilter), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

b 1-131(G); iodine-131 as analyzed by gamma spectroscopy.

c Activity reported is a net activity result. For gamma spectroscopic analysis, activity detected below the LLD value is not reported.

A4-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)"

Averaged Lab Code Date Analysis First Result Second Result Result Acceptance CF-20, 21 1/4/2010 Gr. Beta 10.96 + 0.27 11.30 +/- 0.28 11.13 +/- 0.19 Pass CF-20, 21 1/4/2010 K-40 8.88 +/- 0.48 8.27 +/- 0.78 8.58 +/- 0.46 Pass CF-20, 21 1/4/2010 Sr-90 0.02 +/- 0.01 0.02 +/- 0.01 0.02 +/- 0.00 Pass CF-41 42 1/4/2010 Be-7 0.45 _+0.11 0.41 +/- 0.14 0.43 +/- 0.09 Pass CF-41, 42 1/4/2010 Gr. Beta 3.26 +/- 0.10 3.33 +/- 0.11 3.30 +/- 0.07 Pass CF-41, 42 1/4/2010 K-40 2.85 _ 0.36 3.04 +/- 0.22 2.95 +/- 0.21 Pass MI-111, 112 1/12/2010 K-40 1276.00 +/- 98.96 1334.80 +/- 105.00 1305.40 +/- 72.14 Pass DW-10010, 10011 1/13/2010 Ra-226 0.48 +/- 0.10 0.43 +/- 0.10 0.46 +/- 0.07 Pass DW-10010, 10011 1/13/2010 Ra-226 1.59 +/- 0.61 1.13 +/- 0.47 1.36 +/- 0.39 Pass WW-215,216 1/18/2010 H-3 211.16 +/- 87.57 291.90 +/- 91.31 251.53 +/- 63.26 Pass DW-10022,10023 1/21/2010 Ra-226 8.57 +/- 0.91 10.20 +/- 1.08 9.39 +/- 0.71 Pass DW-10022,10023 1/21/2010 Ra-228 5.68 +/- 1.36 3.59 +/- 1.17 4.64 +/- 0.90 Pass WW-424,425 1/28/2010 H-3 422.30 t 95.90 484.20 +/- 98.50 453.25 +/- 68.74 Pass DW-10034,10035 1/28/2010 Ra-226 0.93 +/-0.13 0.90 +/- 0.11 0.92 +/- 0.09 Pass DW-10034,10035 1/28/2010 Ra-228 1.16 +/- 0.62 1.29 +/- 0.62 1.23 +/- 0.44 Pass SW-382, 383 2/11/2010 Gr. Beta 2.22 +/- 0.68 1.18 +/- 0.71 1.70 +/- 0.49 Pass DW-10046,10047 2/2/2010 Ra-226 6.11 +/- 0.91 7.88 +/- 1.17 7.00 +/- 0.74 Pass DW-10046,10047 2/2/2010 Ra-228 5.84 +/- 1.11 6.13 +/- 1.14 5.99 +/- 0.80 Pass WW-693, 694 2/23/2010 H-3 1458.00 +/- 131.00 1531.00 +/- 133.00 1494.50 +/- 93.34 Pass SW-782, 783 3/1/2010 Gr. Beta 1.05 +/- 0.42 1.60 +/- 0.43 1.33 +/- 0.30 Pass SW-782, 783 3/1/2010 K-40 1.50 +/- 0.15 1.52 +/- 0.15 1.51 +/- 0.11 Pass MI-946, 947 3/9/2010 K-40 1485.00 +/- 109.30 1347.40 +/- 108.30 1416.20 +/- 76.93 Pass W-1035,1036 3/17/2010 Ra-226 11.78 +/- 1.51 9.76 +/- 1.26 10.77 +/- 0.98 Pass W-1035,1036 3/17/2010 Ra-228 5.31 +/- 2.42 8.45 +/- 2.78 6.88 +/- 1.84 Pass SW-1285,1286 3/17/2010 H-3 377.60 +/- 104.50 282.70 +/- 100.70 330.15 +/- 72.56 Pass W-1103,1104 3/18/2010 H-3 12690 +/- 333 12679 +/-333 12685 +/- 235 Pass WW-1193,1194 3/18/2010 H-3 227.38 +/- 95.19 251.81 +/- 96.15 239.60 +/- 67.65 Pass LW-1909,1910 3/24/2010 H-3 1529.40 +/- 144.60 1404.40 +/- 140.80 1466.90 +/- 100.91 Pass LW-1 909, 1910 3/25/2010 H-3 2.40 +/- 0.97 1.99 +/- 1.03 2.20 +/- 0.71 Pass DW-10068,10069 3/25/2010 Gr. Alpha 1.08 +/- 1.02 1.35 +/- 1.05 1.22 +/- 0.73 Pass DW-10070,10071 3/29/2010 Ra-226 1.58 +/- 0.17 1.69 +/- 0.16 1.64 +/- 0.12 Pass DW-10070,10071 3/29/2010 Ra-228 1.16 +/- 0.47 1.34 +/- 0.49 1.25 +/- 0.34 Pass AP-1 729, 1730 3/30/2010 Be-7 0.08 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 Pass AP-1782, 1783 3/30/2010 Be-7 0.08 +/- 0.01 0.09 +/- 0.01 0.09 +/- 0.01 Pass E-1392, 1393 4/1/2010 Gr. Beta 1.59 +/- 0.07 1.66 +/- 0.08 1.63 +/- 0.05 Pass E-1392, 1393 4/1/2010 K-40 902.30 +/- 179.00 1076.70 +/- 202.90 989.50 +/- 135.29 Pass WW-1422,1423 4/11/2010 Gr. Beta 22.23 +/- 1.58 19.42 +/- 1.40 20.83 +/- 1.06 Pass SW-1464,1465 4/112010 H-3 262.06 +/- 98.96 233.18 +/- 97.75 247.62 +/- 69.55 Pass XW-1666,1667 4/1/2010 Fe-55 7.05 +/- 0.71 7.25 +/- 0.74 7.15 +/- 0.51 Pass SG-1532, 1533 4/6/2010 Ac-228 19.45 +/- 1.14 20.07 +/- 1.19 19.76 +/- 0.82 Pass SG-1532,1533 4/6/2010 Pb-214 12.66 +/- 0.52 13.32 +/- 0.54 12.99 +/- 0.38 Pass A5-1

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance SG-1506, 1507 4/7/2010 Ac-228 1.28 +/- 0.15 1.15 +/- 0.14 1.22 +/- 0.10 Pass SG-1506, 1507 4/7/2010 Pb-214 1.24 +/- 0.10 1.22 +/- 0.09 1.23 +/- 0.07 Pass SW-1645, 1646 4/14/2010 H-3 312.00 +/- 100.00 352.00 +/- 102.00 332.00 +/- 71.42 Pass DW-10095, 10096 4114/2010 Ra-226 4.87 +/- 0.53 5.57 +/- 0.6i 5.22 +/- 0.40 Pass DW-10095, 10096 4/14/2010 Ra-228 2.49 +/- 0.56 2.76 +/- 0.60 2.63 +/- 0.41 Pass W-2013, 2014 4/16/2010 Gr. Alpha 33.45 +/- 3.98 39.11 +/-4.54 36.28 +/- 3.02 Pass W-2013, 2014 4/16/2010 Gr. Beta 14.83 +/- 0.96 16.07 +/- 0.96 15.45 +/- 0.68 Pass WW-2431,2432 4/19/2010 H-3 400.40 +/- 98.10 377.70 +/- 97.10 389.05 +/- 69.01 Pass SO-2037, 2038 4/22/2010 K-40 2.89 +/- 0.40 2.89 +/- 0.51 2.89 +/- 0.32 Pass W-2325, 2326 4/26/2010 H-3 399.00 +/- 92.00 429.00 +/- 94,00 414.00 +/- 65.76 Pass AP-2149, 2150 4/29/2010 Be-7 0.14 +/- 0.08 0.26 +/- 0.12 0.20 +/- 0.07 Pass LW-2191, 2192 4/29/2010 Gr. Beta 1.16 +/- 0.56 0.79 +/- 0.52 0.97 +/- 0.38 Pass G-2170, 2171 5/3/2010 Be-7 0.91 +/- 0.32 0.86 +/- 0.26 0.89 +/- 0.21 Pass G-2170, 2171 5/3/2010 Gr. Beta 8.73 +/- 0.22 9.01 +/- 0.23 8.87 +/- 0.16 Pass G-2170, 2171 5/3/2010 K-40 7.24 +/- 0.44 7.48 +/- 0.78 7.36 +/- 0.45 Pass SWT-2282, 2283 5/4/2010 Gr. Beta 0.73 +/- 0.52 1.58 +/- 0.57 1.16 +/- 0.39 Pass WW-2233, 2234 5/5/2010 Gr. Alpha 1.56 +/- 1.47 2.27 +/- 1.65 1.92 +/- 1.10 Pass WW-2233, 2234 5/5/2010 Gr. Beta 2.33 +/- 1.14 4.08 +/- 1.24 3.21 +/- 0.84 Pass TD-2410, 2411 5/10/2010 H-3 431.92 +/- 96.50 403.05 +/- 95.26 417.48 +/- 67.80 Pass SG-2347, 2348 5/13/2010 Ra-226 37.34 +/- 0.42 37.91 +/- 0.36 37.63 +/- 0.28 Pass F-2463, 2464 5/17/2010 K-40 2.69 +/- 0.56 2.65 +/- 0.38 2.67 +/- 0.34 Pass XW-2834, 2835 5/20/2010 H-3 209.53 +/- 83.34 263.11 +/- 85.95 236.32 +/- 59.86 Pass WW-2597, 2598 5/25/2010 H-3 288.10 +/- 98.20 155.80 +/- 93.40 221.95 +/- 67.76 Pass MI-2639, 2640 5/25/2010 K-40 1428.80 +/- 110.60 1408.60 +/- 107.40 1418.70 +/- 77.08 Pass SL-2771, 2772 6/1/20110 Gr. Beta 5.33 +/- 0.18 5.30 +/- 0.18 5.32 +/- 0.13 Pass SL-2771, 2772 6/1/2010 K-40 4.67 +/- 0.46 4.88 +/- 0.46 4.78 +/- 0.33 Pass SW-2879, 2880 6/1/2010 H-3 335.60 +/- 92.60 356.40 +/- 93.60 346.00 +/- 65.83 Pass SG-2904, 2905 6/7/2010 Gamma 5.20 +/- 0.20 5.50 +/- 0.10 5.35 +/- 0.11 Pass SO-3039, 3040 6/8/2010 Be-7 0.12 +/- 0.03 0.13 +/- 0.08 0.13 +/- 0.04 Pass SO-3039, 3040 6/8/2010 Cs-137 0.01 +/- 0.00 0.01 +/- 0.00 0.01 +/- 0.00 Pass SO-3039, 3040 6/8/2010 Gr. Beta 22.80 +/- 2.05 23.84 +/- 2.44 23.32 +/- 1.59 Pass SO-3039, 3040 6/8/2010 K-40 11.30 +/- 1.20 11.70 +/- 1.20 11.50 +/- 0.85 Pass SO-3039, 3040 6/8/2010 U-233/4 0.12 +/- 0.02 0.13 +/- 0.01 0.13 +/- 0.01 Pass SO-3039, 3040 6/8/2010 U-238 0.12 +/- 0.01 0.13 +/- 0.01 0.13 +/- 0.01 Pass WW-3060, 3061 6/14/2010 H-3 199.16 +/- 95.13 203.59 +/- 95.34 201.38 +/- 67.34 Pass VE-3351, 3352 6/21/2010 Be-7 1.86 +/- 0.25 1.85 +/- 0.27 1.85 +/- 0.18 Pass VE-3351, 3352 6/21/2010 K-40 6.10 +/- 0.52 6.10 +/- 0.57 6.10 +/- 0.39 Pass W-3469, 3470 6/25/2010 H-3 573.00 +/- 110.00 525.00 +/- 108.00 549.00 +/- 77.08 Pass SG-3539, 3540 6/29/2010 Ac-228 14.55 +/- 0.51 14.57 +/- 0.44 14.56 +/- 0.34 Pass SG-3539, 3540 6/29/2010 Pb-214 15.50 +/- 1.56 16.80 +/- 1.71 16.15 +/- 1.16 Pass AP-3743, 3744 6/30/2010 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 Pass A5-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance G-3427, 3428 7/1/2010 Be-7 1.18 +/- 0.29 1.06 +/- 0.25 1.12 +/- 0.19 Pass G-3427, 3428 7/1/2010 K-40 8.79 +/- 0.64 7.85 +/- 0.65 8.32 +/- 0.46 Pass SW-3512, 3513 7/6/2010 H-3 441.00 +/- 103.00 423.00 +/- 102.00 432.00 +/- 72.48 Pass AP-3680, 3681 7/8/2010 Be-7 0.16 +/- 0.08 0.13 +/- 0.07 0.15 +/- 0.05 Pass VE-3791, 3792 7/12/2010 K-40 4.37 +/- 0.38 4.23 +/- 0.35 4.30 +/- 0.26 Pass WW-3934, 3935 7/12/2010 H-3 3091.00 +/- 187.00 3242.00 +/- 191.00 3166.50 +/- 133.65 Pass DW-10135, 10136 7/13/2010 Ra-226 0.18 +/- 0.07 0.26 +/- 0.07 0.22 +/- 0.05 Pass DW-10135, 10136 7/13/2010 Ra-228 0.76 +/- 0.44 0.81 +/- 0.41 0.79 +/- 0.30 Pass W-4063, 4064 7/14/2010 H-3 469.00 +/- 104.00 351.00 +/- 99.00 410.00 +/- 71.79 Pass DW-10143, 10144 7/19/2010 Gr. Alpha 2.84 +/- 0.74 2.49 +/- 0.73 2.67 +/- 0.52 Pass DW-10148, 10149 7/23/2010 Ra-226 2.08 +/- 0.39 2.97 +/- 0.55 2.53 +/- 0.34 Pass DW-10148, 10149 7/23/2010 Ra-228 1.90 +/- 0.61 2.00 +/- 0.61 1.95 +/- 0.43 Pass DW-10159, 10160 7/23/2010 Ra-226 0.91 +/- 0.14 0.79 +/- 0.21 0.85 +/- 0.13 Pass DW-10159, 10160 7/23/2010 Ra-228 1.41 +/- 0.54 1.30 +/- 0.53 1.36 +/- 0.38 Pass SL-4106, 4107 8/2/2010 Be-7 2.05 +/- 0.20 2.05 +/- 0.18 2.05 +/- 0.13 Pass SL-4106, 4107 8/2/2010 Gr. Beta 5.06 +/- 0.32 4.62 +/- 0.30 4.84 +/- 0.22 Pass SL-4106, 4107 8/2/2010 K-40 1.89 +/- 0.24 1.70 +/- 0.17 1.80 +/- 0.15 Pass SG-4085, 4086 8/3/2010 Ra-226 20.23 +/- 2.04 21.45 +/- 2.16 20.84 +/- 1.49 Pass SG-4085, 4086 8/3/2010 Ra-228 15.88 +/- 0.41 16.24 +/- 0.36 16.06 +/- 0.27 Pass SWT-4304, 4305 8/3/2010 Gr. Beta 2.08 +/- 1.07 2.44 +/- 0.98 2.26 +/- 0.73 Pass BS-4398, 4399 8/10/2010 Cs-137 78.80 +/- 33.50 94.30 +/- 51.90 86.55 +/- 30.89 Pass BS-4398, 4399 8/10/2010 K-40 13708 +/- 795 12091 +/- 1110 12900 +/-683 Pass VE-4531, 4532 8/11/2010 Gr. Beta 36.20 +/- 0.90 35.80 +/- 0.90 36.00 +/- 0.64 Pass VE-4531, 4532 8/11/2010 K-40 27.31 +/- 0.70 27.58 +/- 0.62 27.45 +/- 0.47 Pass VE-4531, 4532 8/11/2010 U-233/4 0.014 +/- 0.003 0.014 +/- 0.003 0.014 +/- 0.002 Pass VE-4531, 4532 8/11/2010 U-238 0.012 +/- 0.003 0.010 +/- 0.002 0.011 +/- 0.002 Pass DW-10170, 10171 8/13/2010 Ra-226 1.32 +/- 0.14 1.26 +/- 0.14 1.29 +/- 0.10 Pass DW-10170, 10171 8/13/2010 Ra-228 2.55 +/- 0.78 1.76 +/- 0.71 2.16 +/- 0.53 Pass AP-4766, 4767 8/26/2010 Be-7 0.18 +/- 0.09 0.25 +/- 0.13 0.22 +/- 0.08 Pass DW-10182, 10183 8/27/2010 Ra-226 0.15 +/- 0.08 0.11 +/-0.07 0.13 +/- 0.05 Pass VE-4928, 4929 9/1/2010 K-40 2.99 +/- 0.41 3.18 +/- 0.28 3.09 +/- 0.25 Pass SL-4883, 4884 9/1/2010 Gr. Beta 6.90 +/- 0.20 7.10 +/- 0.20 7.00 +/- 0.14 Pass SL-4883, 4884 b 9/1/2010 K-40 7.15 +/- 0.99 5.07 +/- 0.51 6.11 +/- 0.56 Fail W-5135, 5136 9/6/2010 H-3 658.60 +/- 110.80 600.90 +/- 108.50 629.75 +/- 77.54 Pass SW-5071, 5072 9/13/2010 H-3 186.70 +/- 101.10 267.30 +/- 104.40 227.00 +/- 72.66 Pass XWW-5246, 5247 9/14/2010 H-3 1990.60 +/- 157.70 1986.20 +/- 157.60 1988.40 +/- 111.48 Pass A5-3

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance VE-5114, 5115 9/9/2010 Be-7 1.14 +/- 0.35 1.48 +/- 0.26 1.31 +/- 0.22 Pass VE-5114, 5115 9/9/2010 Gr. Beta 34.72 +/- 1.29 33.38 +/- 1.23 34.05 +/- 0.89 Pass VE-5114, 5115 9/9/2010 H-3 79367 +/- 837 79421 +/-837 79394 +/- 592 Pass VE-5114, 5115 9/9/2010 K-40 22.13 +/- 0.67 21.93 +/- 0.58 22.03 +/- 0.44 Pass VE-5114, 5115 9/9/2010 U-233/4 0.08 +/- 0.01 0.06 +/- 0.01 0.07 +/- 0.01 Pass MI-5267, 5268 9/20/2010 K-40 1281.10 +/- 118.90 1218.60 +/- 110.80 1249.85 +/- 81.26 Pass SO-5357, 5358 9/23/2010 K-40 10894.00 +/- 560.00 11175.00 +/- 760.00 11034.50 +/- 472.02 Pass AP-5357, 5358 9/23/2010 Be-7 0.11 +/- 0.02 0.09 +/- 0.02 0.10 +/- 0.01 Pass DW-10194, 10195 9/23/2010 Ra-226 0.40 +/- 0.10 0.20 +/- 0.10 0.30 +/- 0.07 Pass DW-10194,10195 9/23/2010 Ra-228 1.61 +/- 0.65 0.88 +/- 0.47 1.25 +/- 0.40 Pass WW-5442,5443 9/29/2010 H-3 6706.00 +/- 252.00 6510.00 +/- 249.00 6608.00 +/- 177.13 Pass VE-5469,5470 9/29/2010 K-40 2.86 + 0.38 2.57 +/- 0.37 2.72 +/- 0.26 Pass BS-5886, 5887 9/29/2010 Cs-137 83.36 +/- 23.31 58.97 +/- 21.16 71.17 +/- 15.74 Pass BS-5886,5887 912912010 K-40 13913.00 +775.40 13582.00 +/- 710.30 13747.50 +/- 525.78 Pass G-5513,5514 10/4/2010 Be-7 6.73 +/- 0.40 6.36 +/- 0.41 6.55 +/- 0.29 Pass E-5492,5493 10/4/2010 Gr. Beta 1.74 +/- 0.05 1.77 +/- 0.05 1.76 +/- 0.04 Pass E-5492, 5493 10/4/2010 K-40 1.57 +/- 0.17 1.55 +/- 0.18 1.56 +/- 0.12 Pass G-5512,5513 10/4/2010 Gr. Beta 10.86 +/- 0.44 10.39 +/- 0.39 10.63 +/- 0.29 Pass G-5512,5513 10/4/2010 K-40 7.10 +/- 0.54 7.41 +/- 0.59 7.26 +/- 0.40 Pass MI-5541, 5542 10/4/2010 K-40 1090.60 +/- 106.70 1246.10 +/- 102.60 1168.35 + 74.01 Pass MI-5541, 5542 10/4/2010 Sr-90 1.44 +/- 0.38 1.11 +/- 0.35 1.27 +/- 0.26 Pass F-6061, 6062 10/9/2010 H-3 7.64 +/- 0.23 7.49 +/- 0.23 7.57 +/- 0.16 Pass F-6061, 6062 10/9/2010 K-40 2.81 +/- 0.40 2.56 +/- 0.50 2.68 +/- 0.32 Pass VE-5740, 5741 10/10/2010 K-40 4.92 +/- 0.53 4.61 +/- 0.34 4.77 +/- 0.32 Pass VE-5761, 5762 10/12/2010 Be-7 1.05 +/- 0.29 0.69 +/- 0.15 0.87 +/- 0.16 Pass VE-5761, 5762 10/12/2010 K-40 3.45 +/- 0.45 3.34 +/- 0.29 3.40 +/- 0.27 Pass AP-5910, 5911 10/14/2010 Be-7 0.23 +/- 0.09 0.30 +/- 0.12 0.26 +/- 0.08 Pass WW-6294,6295 10/18/2010 H-3 1681.49 +/- 146.32 1637.41 +/- 144.98 1659.45 +/- 102.99 Pass P-6038, 6039 10/19/2010 H-3 2131.90 +/- 159.50 2212.00 +/- 161.70 2171.95 +/- 113.56 Pass AP-6195, 6196 10/21/2010 Be-7 0.27 +/- 0.11 0.26 +/- 0.13 0.26 +/- 0.09 Pass WW-6366,6367 10/23/2010 H-3 477.28 +/- 102.02 529.99 +/- 104.27 503.64 +/- 72.94 Pass SWU-6315, 6316 10/26/2010 Gr. Beta 1.85 +/- 1.00 1.40 +/- 0.90 1.62 +/- 0.67 Pass SO-6336,6337 10/28/2010 Cs-137 0.23 +/- 0.03 0.23 +/- 0.04 0.23 +/- 0.02 Pass SO-6336,6337 10/28/2010 Gr. Beta 26.36 +/- 1.67 24.78 +/- 1.52 25.57 +/- 1.13 Pass SO-6336, 6337 10/28/2010 K-40 13.43 +/- 0.76 13.73 +/- 0.81 13.58 +/- 0.56 Pass AP-6453, 6454 10/28/2010 Be-7 0.23 +/- 0.12 0.30 +/- 0.15 0.26 +/- 0.10 Pass BS-6475,6476 11/1/2010 Gr. Beta 13.13 +/- 1.83 12.75 +/- 1.67 12.94 +/- 1.24 Pass F-6658, 6659 11/3/2010 K-40 2.79 _ 0.40 2.94 +/- 0.44 2.86 +/- 0.30 Pass F-6565, 6566 11/4/2010 Cs-1 37 0.06 +/- 0.02 0.04 +/- 0.01 0.05 +/- 0.01 Pass F-6565, 6566 11/4/2010 Gr. Beta 3.90 +/- 0.10 4.10 +/- 0.10 3.96 +/- 0.06 Pass F-6565, 6566 11/4/2010 K-40 2.63 +/- 0.45 2.57 +/- 0.35 2.60 +/- 0.29 Pass SS-5761,5762 11/16/2010 K-40 15.42 +/- 1.57 15.87 - 1.21 15.65 +/- 0.99 Pass WW-7056,7057 11/30/2010 Gr. Beta 2.09 +/- 0.84 2.22 +/- 0.80 2.16 +/- 0.58 Pass A5-4

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance SO-7166, 7167 11/30/2010 Cs-137 0.12 +/-0.04 0.11 +/- 0.03 0.11 +/-0.03 Pass SO-7166, 7167 11/30/2010 K-40 14.93 +/- 0.88 14.49 +/- 0.86 14.71 +/- 0.61 Pass WW-7412, 7413 12/6/2010 H-3 469.78 +/- 146.32 503,57 +/- 93.96 486.68 +/- 86.94 Pass MI-7187, 7188 12/8/2010 K-40 1495.10 +/- 129.00 1398.40 +/- 109.10 1446.75 +/- 84.47 Pass MI-7187, 7188 12/8/2010 Sr-90 0.57 +/- 0.31 0.66 +/- 0.28 0.62 +/- 0.21 Pass WW-7255, 7256 12/8/2010 H-3 243.46 +/- 90.39 327.34 +/- 94.11 285.40 +/- 65.24 Pass AP-7276, 7277 12/9/2010 Be-7 0.13 +/- 0.07 0.18 +/- 0.10 0.16 +/- 0.06 Pass XWW-7297, 7298 12/9/2010 H-3 686.00 +/- 102.00 764.60 +/- 105.00 725.30 +/- 73.19 Pass AP-7344, 7345 12/16/2010 Be-7 0.16 +/- 0.09 0.17 +/- 0.09 0.16 +/- 0.06 Pass SWT-7480, 7481 12/28/2010 Gr. Beta 0.90 +/- 0.40 1.03 +/- 0.41 0.97 +/- 0.29 Pass Note: Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

a Results are reported in units of pCi/L, except for air filters (pCi/Filter), food products, vegetation, soil, sediment (pCi/g).

b Analysis was repeated, result of reanalysis: 4.83 +/- 0.29 pCi/L.

A5-5

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)a.

b Concentration Known Control Lab Code c Date Analysis Laboratory result Activity Limits d Acceptance STVE-1 199 03/01110 Co-57 0.01 +/- 0.03 0.00 Pass STVE-1 199 03/01/10 Co-60 3.39 +/- 0.12 3.27 2.29 - 4.25 Pass STVE-1 199 03/01/10 Cs-134 4.74 +/- 0.15 4.39 3.07 - 5.71 Pass STVE-1 199 03/01/10 Cs-1 37 3.32 +/- 0.17 3.06 2.14 -3.98 Pass STVE-1 199 03/01/10 Mn-54 0.01 +/- 0.05 0.00 Pass STVE-1199 03101110 Zn-65 8.03 +/- 0.33 7.10 4.97 - 9.23 Pass STW-1200 03/01/10 Gr. Alpha 0.40 +/- 0.05 0.68 0.00-1.35 Pass STW-1200 03/01/10 Gr. Beta 3.03 +/- 0.07 3.09 1.55 -4.64 Pass STW-1 201 03/01/10 Am-241 1.05 +/- 0.08 1.30 0.91 - 1.69 Pass STW-1201 03/01/10 Co-57 28.90 t 0.40 28.30 19.80 - 36.80 Pass STW-1201 03/01/10 Co-60 0.06 t 0.05 0.00 Pass STW-1201 03/01/10 Cs-1 34 -0.03 t 0.09 0.00 Pass STW-1201 03/01/10 Cs-137 60.60 +/- 0.60 60.60 42.40 - 78.80 Pass STW-1201 03/01/10 Fe-55 3.00 +/- 14.40 0.00 Pass STW-1 201 03/01/10 H-3 93.20 +/- 18.30 90.80 63.60 - 118.00 Pass STW-1 201 03/01/10 Mn-54 27.80 1 0.40 26.90 18.80 - 35.00 Pass STW-1201 03/01/10 Ni-63 49.10 +/- 3.50 59.90 41.90 - 77.90 Pass STW-1201 03/01/10 Sr-90 -0.10 +/- 0.60 0.00 Pass STW-1201 03/01/10 Tc-99 0.50 +/- 0.50 0.00 Pass STW-1201 03/01/10 U-233/4 1.21 +/- 0.05 1.22 0.85 - 1.59 Pass STW-1201 03/01/10 U-238 1.20 +/- 0.05 1.25 0.88 -1.63 Pass STW-1201 03/01/10 Zn-65 42.70 +/- 0.80 40.70 28.50 - 52.90 Pass STSO-1202 03/01/10 Co-57 520.00 +/- 10.80 522.00 365.00 - 679.00 Pass STSO-1202 03/01/10 Co-60 599.10 +/- 2.80 622.00 435.00 - 809.00 Pass STSO-1202 03/01/10 Cs-134 666.10 +/- 4.70 733.00 513.00 - 953.00 Pass STSO-1202 03/01/10 Cs-137 774.40 +/- 4.50 779.00 545.00 - 1013.00 Pass STSO-1202 03/01(10 K-40 562.00 +/- 15.30 559.00 391.00 - 727.00 Pass STSO-1202 03/01/10 Mn-54 866.20 +/- 4.60 849.00 594.00 - 1104.00 Pass STSO-1202 03/01/10 Sr-90 225.50 +/- 11.80 288.00 202.00 - 374.00 Pass STSO-1202 03/01/10 U-233/4 59.90 +/- 2.50 60.00 42.00 - 78.00 Pass STSO-1202 03/01/10 U-238 62.10 t 2.60 64.00 45.00 - 83.00 Pass STSO-1202 03/01/10 Zn-65 -1.23 +/- 1.96 0.00 Pass STAP- 1203 03/01/10 Am-241 0.10 +/- 0.01 0.15 0.10 -0.19 Pass STAP-1203 03/01/10 Co-57 0.01 +/- 0.02 0.00 Pass STAP-1203 03/01/10 Co-60 2.63 +/- 0.19 2.47 1.73 -3.22 Pass STAP-1203 03/01/10 Cs- 134 2.21 +/- 0.34 2.13 1.49 -2.77 Pass STAP-1203 03/01/10 Cs-137 1.66 +/- 0.22 1.53 1.07 -1.99 Pass STAP-1203 03/01/10 Mn-54

• 3.42 +/- 0.26 3.02 2.11 -3.93 Pass STAP-1203 03/01/10 Sr-90 0.02 +/- 0.06 0.00 Pass STAP-1203 03/01/10 Zn-65 -0.05 +/- 0.11 0.00 Pass A6-1

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)a.

b Concentration Known Control Lab Code c Date Analysis Laboratory result Activity Limits d Acceptance STAP-1204 03/01/10 Gr. Alpha 0.13 +/- 0.03 0.43 0.00 - 0.85 Pass STAP-1204 03/01/10 Gr. Beta 1.46 +/- 0.07 1.29 0.65 - 1.94 Pass STW-1211 08/01/10 Am-241 0.02 t 0.02 0.00 Pass STW-1211 08/01/10 Co-57 36.40 +/- 4.80 36.00 25.20 - 46.80 Pass STW-1211 08/01/10 Co-60 28.30 +/- 1.00 28.30 19.80 - 36.80 Pass STW-1211 08/01/10 Cs-134 29.30 +/- 2.10 31.40 22.00 - 40.80 Pass STW-1211 08/01/10 Cs-137 44.60 +/- 1.80 44.20 30.90 - 57.50 Pass STW-1211 08/01/10 Fe-55 48.50 +/- 20.10 60.20 42.10 - 78.30 Pass STW-1211 08/01/10 H-3 503.60 +/- 12.80 453.40 317.40 - 589.40 Pass STW-1211 08/01/10 K-40 38.50 +/- 2.50 38.90 27.20 - 50.60 Pass STW-1211 08/01/10 Mn-54 0.10 +/- 0.30 0.00 Pass STW-1211 08/01/10 Ni-63 49.30 +/- 3.10 56.10 39.30 - 72.90 Pass STW-1211 08/01/10 Pu-238 1.49 +/- 0.15 1.81 1.27 -2.35 Pass STW-1211 08/01/10 Pu-239/40 1.20 +/- 0.10 1.35 0.95 - 1.76 Pass STW-1211 08101/10 Sr-90 9.20 +/- 1.30 8.30 5.80 - 10.80 Pass STW-1211 08/01/10 Tc-99 28.10 +/- 0.90 33.60 23.50 - 43.70 Pass STW-1211 08/01/10 U-233/4 2.04 t 0.14 2.01 1.41 -2.61 Pass STW-1211 08/01/10 U-238 2.05 +/- 0.14 2.07 1.45 -2.69 Pass STW-1211 08/01/10 Zn-65 32.80 +/- 3.00 31.00 21.70 -40.30 Pass STW-1212 08/01/10 Gr. Alpha 1.54 +/- 0.09 1.92 0.58 - 3.26 Pass STW-1212 08/01/10 Gr. Beta 4.13 +/- 0.15 4.39 2.20 - 6.59 Pass STVE-1213 08/01/10 Co-57 9.60 +/- 0.54 8.27 5.79 - 10.75 Pass STVE-1213 08/01/10 Co-60 0.05 +/- 0.08 0.00 Pass STVE-1213 08/01/10 Cs-134 4.83 +/- 0.26 4.79 3.35 - 6.23 Pass STVE-1213 08/01/10 Cs-137 6.45 +/- 0.66 5.88 4.12 - 7.64 Pass STVE-1213 08/01/10 Mn-54 7.12 +/- 0.66 6.29 4.40 -8.17 Pass STVE-1213 08/01/10 Zn-65 6.05 +/- 0.74 5.39 3.77 - 7.01 Pass STSO-1214 08/01/10 Co-57 0.10 +/- 1.60 0.00 Pass STSO-1214 08/01/10 Co-60 370.00 +/- 6.00 343.00 240.00 - 446.00 Pass STSO-1214 08/01/10 Cs-134 1005.00 +/-21.00 940.00 658.00 - 1222.00 Pass STSO-1214 08/01/10 Cs-137 755.00 +/- 15.00 670.00 469.00 - 871.00 Pass STSO-1214 08/01110 K-40 783.00 +/- 54.00 699.00 489.00 - 909.00 Pass STSO-1214 08/01/10 Mn-54 942.00 +/- 15.00 820.00 574.00 - 1066.00 Pass STSO-1214 08/01/10 Pu-2o38 69.20 +/- 6.20 64.00 45.00 - 83.00 Pass STSO-1214 08/01/10 Pu-239/40 76.50 +/- 6.20 71.00 50.00 - 92.00 Pass STSO-1214 08/01/10 Sr-90 3.50 +/- 8.00 0.00 Pass STSO-1214 08/01110 U-233/4 76.50 +/- 6.20 71.00 50.00 - 92.00 Pass STSO-1214 08/01/10 U-238 271.40 +/- 9.00 289.00 202.00 - 376.00 Pass STSO-1214 08/01/10 Zn-65 310.00 +/- 18.00 265.00 186.00 - 345.00 Pass A6-2

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)a.

Concentration b Known Control Lab Code C Date Analysis Laboratory result Activity Limits d Acceptance STAP-1215 08/01/10 Co-57 4.47 +/- 0.21 4.08 2.86 - 5.30 Pass STAP-1215 08/01/10 Co-60 3.15 +/- 0.30 2.92 2.04 - 3.80 Pass STAP-1215 08/01/10 Cs-134 3.03 +/- 0.17 2.98 2.09 - 3.87 Pass STAP-1215 08/01/10 Cs-137 0.01 +/- 0.05 0.00 - Pass STAP-1215 08/01/10 Mn-54 3.69 +/- 0.39 3.18 2.23 -4.13 Pass STAP-1215 08/01/10 Sr-90 1.00 +/- 0.12 1.01 0.71 -1.31 Pass STAP-1215 08/01/10 Zn-65 0.03 +/- 0.15 0.00 - Pass STAP-1216 08/01/10 Gr. Alpha 0.01 + 0.01 0.00 Pass STAP-1216 08/01/10 Gr. Beta 0.54 +/- 0.05 0.50 0.25 - 0.75 Pass 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).

d MAPEP results are presented as the known values and expected laboratory precision (1 sigma, 1 determination) and control limits as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". MAPEP does not provide control limits.

A6-3

TABLE A-7. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

Concentration (pCi/L)

Lab Code b Date Analysis Laboratory ERA Control Result c Result d Limits Acceptance STAP-1217 09/20/10 Am-241 55.6 +/- 2.9 74.1 43.3 - 102.0 Pass STAP-1217 09/20/10 Co-60 517.1 +/- 9.1 479.0 371.0 - 598.0 Pass STAP-1217 09/20/10 Cs-1 34 384.6 +/- 33.7 388.0 253.0 - 480.0 Pass STAP-1217 09/20/10 Cs-137 589.4 +/- 7.1 514.0 386.0 - 675.0 Pass STAP-1 217 09/20/10 Mn-54 0.0 +/- 0.0 Pass STAP-1217 09/20/10 Pu-238 76.5 +/- 4.0 72.9 50.0 - 95.8 Pass STAP-1217 09/20/10 Pu-239/40 73.0 +/- 3.8 69.6 50.5 - 90.1 Pass STAP-1217 09/20/10 Sr-90 172.9 +/- 21.3 159.0 70.0 - 247.0 Pass STAP-1217 09/20/10 U-233/234 64.9 +/- 3.9 71.8 45.2 - 106.0 Pass STAP-1217 09/20/10 U-238 68.0 +/- 4.0 71.2 45.6 - 101.0 Pass STAP-1217 09/20/10 Uranium 135.5 +/- 8.7 146.0 74.6 - 232.0 Pass STAP-1217 09/20/10 Zn-65 563.1 +/- 15.3 465.0 322.0 - 644.0 Pass STAP-1218 09/20/10 Gr. Alpha 66.1 +/- 3.2 52.3 27.1 - 78.7 Pass STAP-1218 09/20110 Gr. Beta 69.9 +/- 2.5 52.7 32.5 - 77.0 Pass STSO-1219 09/20/10 Ac-228 1632.0 +/- 80.4 1830.0 1170.0 -2580.0 Pass STSO-1219 09/20/10 Am-241 1063.0 +/- 120.9 1120.0 669.0 - 1440.0 Pass STSO-1 219 09/20/10 Bi-212 1752.0 +/- 255.6 2070.0 543.0 - 3100.0 Pass STSO-1 219 09/20/10 Bi-214 909.3 +/- 38.9 983.0 603.0 - 1410.0 Pass STSO-1219 09/20/10 Co-60 4852.0 +/- 153.5 4780.0 3480.0 - 6420.0 Pass STSO-1219 09/20/10 Cs-134 2190.0 +/- 50.7 2240.0 1440.0 - 2700.0 Pass STSO-1219 09/20/10 Cs-137 3584.0 +/- 42.5 3530.0 2700.0 - 4580.0 Pass STSO-1 219 09120/10 K-40 10017.0 +/- 274.5 10700.0 7760.0 - 14500.0 Pass STSO-1219 09/20/10 Mn-54 0.0 +/- 0.0 Pass STSO-1219 09/20/10 Pb-212 1573.0 +/- 28.2 1640.0 1060.0 -2310.0 Pass STSO-1 219 09/20/10 Pb-214 999.0 +/- 39.2 969.0 580.0 - 1440.0 Pass STSO-1219 09/20/10 Pu-238 1568.0 +/- 155.0 1280.0 733.0 - 1800.0 Pass STSO-1219 09/20110 Pu-239/40 1445.0 +/- 142.9 1180.0 805.0 - 1570.0 Pass STSO-1219 e 09/20/10 U-233/234 599.4 +/- 69.4 1360.0 862.0 - 1690.0 Fail STSO-1219 0 09/20/10 U-238 633.8 +/- 71.3 1340.0 819.0 - 1700.0 Fail STSO-1219 e 09/20/10 Uranium 1248.0 +/- 152.7 2770.0 1580.0 - 3740.0 Fail STSO-1219 09/20/10 Zn-65 2447.0 +/- 60.1 2300.0 1820.0 - 3080.0 Pass STVE-1220 09/20/10 Co-60 1108.0 +/- 38.7 1010.0 683.0 - 1450.0 Pass STVE-1220 09/20/10 Cs-134 1161.0 +/- 57.3 1040.0 595.0 - 1440.0 Pass STVE-1220 09/20/10 Cs-137 1400.0 +/- 43.0 1260.0 924.0 - 1750.0 Pass STVE-1220 09/20/10 K-40 27400.0 +/- 683.4 22600.0 16200.0 - 32000.0 Pass STVE-1220 09/20/10 Mn-54 0.0 +/- 0.0 Pass A7-1

TABLE A-7. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

Concentration (pCi/L)

Lab Code b Date Analysis Laboratory ERA Control Result c Result d Limits Acceptance STVE-1220 09/20/10 Am-241 4185.0 +/- 180.0 4760.0 2710.0 - 6540.0 Pass STVE-1220 09/20/10 Cm-244 2329.0 +/- 132.5 2740.0 1350.0 -4270.0 Pass STVE-1220 09/20/10 Pu-238 4912.0 +/- 194.0 4740.0 2560.0 - 6940.0 Pass STVE-1220 09/20/10 Pu-239/40 4765.0 +/- 111.0 4470.0 2770.0 - 6100.0 Pass STVE-1220 09/20/10 Sr-90 7706.0 +/- 583.9 7810.0 4360.0 - 10400.0 Pass STVE-1220 09/20/10 U-233/234 3862.0 +/- 203.0 4010.0 2750.0 - 5320.0 Pass STVE-1220 09/20110 U-238 3926.0 +/- 205.3 3980.0 2800.0 - 5030.0 Pass STVE-1220 09/20/10 Uranium 7671.0 +/- 201.2 8180.0 5620.0 - 10600.0 Pass

• STVE-1220 09/20/10 Zn-65 1443.0 +/- 81.0 1210.0 874.0 - 1650.0 Pass STW-1221 09/20/10 Am-241 127.9 +/- 4.2 176.0 120.0 -238.0 Pass STW-1221 09/20/10 Co-60 697.8 +/- 10.4 714.0 622.0 - 844.0 Pass STW-1221 09/20/10 Cs-134 437.5 +/- 13.3 492.0 363.0 - 565.0 Pass STW-1221 09/20110 Cs-137 612.8 +/- 11.6 625.0 531.0 - 749.0 Pass STW-1221 09/20/10 Fe-55 936.8 +/- 508.2 825.0 480.0 - 1100.0 Pass STW-1221 09/20/10 Mn-54 0.0 +/- 0.0 Pass STW-1221 09/20/10 Pu-238 148.1 +/- 6.0 162.0 122.0 -201.0 Pass STW-1221 09/20/10 Pu-239/40 154.1 +/- 6.2 148.0 114.0 - 183.0 Pass STW-1221 09/20/10 Sr-90 872.3 +/- 13.4 921.0 585.0 - 1230.0 Pass STW-1221 09/20/10 U-233/234 99.1 +/- 4.4 109.0 82.2 - 140.0 Pass STW-1221 09/20/10 U-238 103.7 +/- 4.5 108.0 82.5 - 134.0 Pass STW-1221 09/20/10 Uranium 206.5 +/- 9.8 221.0 159.0 - 294.0 Pass STW-1221 09/20/10 Zn-65 489.1 +/- 16.2 489.0 414.0 - 610.0 Pass STW-1222 09/20/10 Gr. Alpha 110.6 +/-3.5 146.0 64.8 - 216.0 Pass STW-1222 09/20/10 Gr. Beta 134.6 +/- 2.6 143.0 83.6 -210.0 Pass STW-1223 09/20/10 H-3 23500.0 +/- 1438.0 21600.0 14100.0 -31900.0 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the Environmental Measurements Laboratory Quality Assessment Program (EML).

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

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

d Results are presented as the known values, expected laboratory precision (1 sigma, 1 determination) and control limits as provided by ERA. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". Control limits are not provided.

Analysis was repeated using total dissolution. Results of the reanalysis, U-233/234: 1137 +/- 254 pCi/kg, U-238: 1193 +/- 116 pCi/kg, Total Uranium: 2379 +/- 254 pCi/kg.

A7-2

Appendix B Summary Tables in the format of NRC Radiological Assessment Branch Revision 1, November 1979 Technical Position Page B-1

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2010 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Air Particulate Station 53 (pCi/m 3 ) Gross Beta (317) 0.01 0.026 (265/265) 49 0.026 (53/53) 0.026 (52/52) 0 (0.007 - 0.050) 0.8 miles NNE (0.007 - 0.048) (0.009 - 0.052)

Gamma (24)

Be-7 0.082 (20/20) 49 0.083 (4/4) 0.082 (4/4) 0 (0.058 - 0.105) 0.8 miles NNE (0.058 - 0.105) (0.059 - 0.099)

Air Radioiodine 1-131 (317) 0.07 - (0/265) N/A N/A - (0/52) 0 (pCi/m 3)

Direct Radiation Stations 39, 48 &

Dosimeters 53 (mR per std. Gamma Dose 18.9 (164/164) 47 25.2 (4/4) 19.7 (12/12) 0 90-day Qtr.) (176) (11.0 - 29.2) 0.16 miles S (21.8 - 29.2) (17.9 - 22.7)

Surface Water JRR (pCi/I) Gamma (24) - (0/12) N/A N/A - (0/12) 0 Tritium (24) 3,000 11,428 (12/12) SP 11,428 (12/12) - (0/12) 0 (9,645 - 13,436) 3.2 miles SSE (9,645 - 13,436)

Fe-55 (1) - (0/1) N/A N/A 0 Ground Water B-12 (pCi/I) 1-131 (32) 1 -(0/28) N/A N/A -(0/4) 0 Gamma (32) -(0/28) N/A N/A -(0/4) 0 Tritium (32) 2,000 -(0/28) N/A N/A -(0/4) 0 Page B-2

• • Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (f)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2010 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Drinking BW-15 Water 1-131 (25) 1 -(0/12) N/A N/A - (0/13) 0 (pCi/I)

Gross Beta (25) 4 2.8(12/12) 10-DW 2.8(12/12) 2.9 (13/13) 0 (1.4-3.9) 26.1 miles SSE (1.4- 3.9) (1.3-5.1)

Gamma (25) - (0/12) N/A N/A - (0/13) 0 Tritium (8) 2,000 - (0/4) N/A N/A - (0/4) 0 Shoreline Gamma (5) JRR Sediment (pCi/kg dry) K-40 - 10,133 (3/3) DC 10,253 (2/2) 10,950 (2/2) 0 (9,012 - 11,494) 0.8 miles WNW (9,012 - 11,494) (9,530 - 12,370)

Cs-137 180 143.1 (2/3) DC 184.2 (1/2) 116.8 (1/2) 0 (101.9- 184.2) 0.8 miles WNW Fish Gamma (22) JRR (pCi/kg wet)

K-40 - 3,202 (15/15) CCL 3,202 (15/15) 3,280 (7/7) 0 (2,807 - 3,733) 0.6 miles E to (2,807 - 3,733) (2,674 - 3,726)

NNW Tritium (22) - 7,481 (15/15) CCL 7,481 (15/15) - (0/7) 0 (6,096 - 8,358) 0.6 miles E to (6,096 - 8,358)

NNW Page B-3

• • Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (f)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2010 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Food and Gamma (17) D-2 Garden (pCi/kg wet) Be-7 813 (11/11) Q-6 1,761 (2/2) 662 (6/6) 0 (418 - 1,856) 2.4 miles NW (1,667 - 1,856) (376 - 1,293)

K-40 4,367 (11/11) Q-6 5,509 (2/2) 5,643 (6/6) 0 (2,717 - 6,097) 2.4 miles NW (4,921 - 6,097) (3,636 - 7,604)

NR-U1 Crops Gamma (4)

(pCi/kg wet)

K-40 2,771 (2/2) NR-D2 2,871 (1/1) 8,555 (2/2) 0 (2,671 - 2,871) 11.5 miles S (2,833 - 14,278)

Bottom Gamma (11) JRR Sediment (pCi/kg dry)

K-40 11,659 (9/9) UHS 12,278 (6/6) 9,194 (2/2) 0 (9,696 - 13,708) 0.6 miles E (10,870-13,708) (5,348 - 13,040)

Cs-1 37 66 (7/9) DC 111 (1/2) 112 (1/2) 0 (40- 111) 0.8 miles WNW Fe-55 (2) - (0/1) N/A N/A - (0/1) 0 Page B-4

• • Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (f)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2010 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Aquatic Gamma (2) No Control Vegetation (pCi/kg wet) Be-7 561 (2/2) DC-ALT 691 (1/1) 0 (431 -691) 1.5 miles NW K-40 - 2,558 (2/2) EEA 2,667 (1/1) 0 (2,449 - 2,667) 3.0 miles NNW Soil Gamma (2) No Control (pCi/kg dry)

K-40 - 9,114(2/2) EEA 9,437 (1/1) 0 (8,791 - 9,437) 3.0 miles NNW Cs-1 37 - 336 (1/2) EEA 336(1/1) 0 3.0 miles NNW Deer Gamma (1) No Control (pCi/kg wet)

K-40 - 2,793 (1/1) R2.5 2,793 (1/1) 0 2.5 miles NNW Tritium (1) 626(1/1) R2.5 626(1/1) 0 2.5 miles NNW Page B-5

• • Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (f)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2010 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Alligator Gamma (1) No Control (pCi/kg wet)

K-40 1,899(1/1) CCL 1,899(1/1) 0 1.5 miles WNW Tritium (1) 7,737 (1/1) CCL 7,737 (1/1) 0 1.5 miles WNW Page B-6

• • Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (f)

Air Particulate and Charcoal Filters Location: 002 Collection Collection Volume Gross Beta 1-131 Duplicate 3

Start Date End Date m Concentration Concentration Analysis (pCi/lm 3 ) (pCi/m 3`)

28-DEC-09 04-JAN-1 0 323 0.041 +1- 0.004 0.006 04-JAN- 10 11-JAN-10 296 0.040 +1- 0.004 0.009 11-JAN-10 18-JAN-1 0 310 0.047 +1- 0.005 0.008 1I-JAN-10 18-JAN-10 310 0.049 +1- 0.005 Duplicate 18-JAN-1 0 25-JAN- 10 282 0.018 +1- 0.004 0.012 25-JAN-1 0 01-FEB-10 313 0.028 +1- 0.004 0.012 01-FEB-10 08-FEB-10 299 0.039 +1- 0.005 0.009 08-FEB-1 0 16-FEB-1 0 359 0.029 +1- 0.004 0.008 16-FEB-1 0 22-FEB-10 245 0.022 +1- 0.004 0.014 22-FEB-10 01-MAR-10 299 0.033 +1- 0.004 0.010 01-MAR-10 08-MAR-1 0 284 0.026 +1- 0.004 0.008 08-MAR-1 0 15-MAR-10 291 0.009 +1- 0.003 0.014 15-MAR-10 22-MAR- 10 295 0.017 +1- 0.004 0.020 22-MAR- 10 29-MAR- 10 290 0.017 +1- 0.004 0.012 29-MAR- 10 05-APR-10 280 0.027 +1- 0.004 0.012 05-APR-1 0 12-APR-10 289 0.016 +1- 0.004 0.007 12-APR-1 0 19-APR- 10 291 0.024 +1- 0.004 0.013 19-APR- 10 26-APR-10 279 0.021 +1- 0.004 0.010 26-APR-1 0 03-MAY-1 0 301 0.017 +1- 0.004 0.011 03-MAY- 10 11 -MAY-10 343 0.015 +1- 0.003 0.010 11-MAY-10 17-MAY-1 0 257 0.011 +1- 0.004 0.018 17-MAY-10 24-MAY-1 0 307 0.013 +1- 0.003 0.016 24-MAY-1 0 02-JUN-10 372 0.026 +1- 0.003 0.007 02-JUN-10 08-JUN-10 266 0.009 02-JUN-10 08-JUN-10 266 0.021 +1- 0.004 08-JUN-10 14-JUN-10 261 0.017 +1- 0.004 0.012 14-JUN-10 21-JUN-10 303 0.012 +1- 0.003 0.011 21-JUN-10 28-JUN-10 307 0.019 +1- 0.004 0.008 28-JUN-10 06-JUL-10 393 0.017 +1- 0.003 0.014 06-JUL-10 12-JUL-10 260 0.019 +1- 0.004 0.008 12-JUL-10 19-JUL-10 297 0.029 +1- 0.004 0.010 19-JUL-10 26-JUL-10 295 0.019 +1- 0.004 0.013 19-JUL-10 26-JUL-10 295 0.017 +1- 0.004 Duplicate 26-JUL-10 02-AUG-1 0 298 0.027 +1- 0.004 0.009 02-AUG-10 09-AUG-10 304 0.030 +1- 0.004 0.009 09-AUG-10 16-AUG-10 293 0.023 +1- 0.004 0.007 16-AUG-10 23-AUG-1 0 290 0.038 +1- 0.004 0.011 23-AUG-10 30-AUG-1 0 297 0.026 +1- 0.004 0.009 30-AUG-10 07-SEP-10 351 0.017 +1- 0.003 0.011 07-SEP-1 0 13-SEP-10 257 0.015 +1- 0.004 0.010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - I

Air Particulate and Charcoal Filters Location: 002 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m3 3 )

(pCi/m 3 )

07-SEP-10 13-SEP-10 257 0.017 +1- 0.004 Duplicate 13-SEP-10 20-SEP-10 295 0.027 +1- 0.004 0.013 20-SEP-10 27-SEP-10 306 0.023 +1- 0.004 0.013 27-SEP-10 04-OCT- 10 299 0.017 +1- 0.004 0.011 04-OCT- 10 11-OCT-10 295 0.034 +1- 0.004 0.009 11-OCT-10 19-OCT-1 0 343 0.037 +1- 0.004 0.009 19-OCT- 10 25-OCT-1 0 253 0.034 +1- 0.005 0.015 19-OCT-1 0 25-OCT-1 0 253 0.034 +1- 0.005 Duplicate 25-OCT-1 0 01-NOV-10 307 0.021 +1- 0.004 0.013 01-NOV-10 09-NOV-10 351 0.018 +1- 0.003 0.015 09-NOV-1 0 15-NOV-10 254 0.029 +1- 0.005 0.018 15-NOV-10 22-NOV-1 0 303 0.036 +1- 0.004 0.013 22-NOV-10 29-NOV-1 0 299 0.035 +1- 0.004 0.014 29-NOV-10 06-DEC-1 0 318 0.035 -i-I- 0.004 0.012 06-DEC-1 0 13-DEC-10 300 0.045 +1- 0.005 0.007 13-DEC-1 0 20-DEC-10 294 0.041 +1- 0.005 0.010 20-DEC-10 27-DEC-1 0 322 0.034 +1- 0.004 0.008 27-DEC-1 0 03-JAN-1i1 303 0.033 +1- 0.004 0.010

'2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 2

Air Particulate and Charcoal Filters Location: 018 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCilm 3 ) (pCilm3 )

28-DEC-09 04-JAN-10 314 0.040 +1- 0.004 0.007 04-JAN-1 0 11-JAN-10 298 0.035 +1- 0.004 0.009 11-JAN-10 18-JAN-1 0 299 0.047 +1- 0.005 0.009 18-JAN-10 25-JAN-1 0 296 0.017 +1- 0.004 0.011 25-JAN- 10 01-FEB-10 309 0.028 +1- 0.004 0.012 01-FEB-10 08-FEB-1 0 295 0.030 +1- 0.004 0.010 08-FEB-1 0 16-FEB-1 0 360 0.024 +1- 0.003 0.008 16-FEB-1 0 22-FEB-1 0 247 0.021 +1- 0.004 0.014 22-FEB-10 01-MAR-10 302 0.031 +1- 0.004 0.010 01-MAR-10 08-MAR-1 0 291 0.025 +1- 0.004 0.008 08-MAR-1 0 15-MAR-1 0 296 0.008 +1- 0.003 0.014 15-MAR-1 0 22-MAR-1 0 301 0.017 +1- 0.004 0.020 22-MAR-1 0 29-MAR-1 0 295 0.020 +1- 0.004 0.012 29-MAR-1 0 05-APR-10 286 0.025 +1- 0.004 0.012 05-APR-10 12-APR-10 288 0.037 +1- 0.004 0.007 05-APR-1 0 12-APR-10 288 0.040 +1- 0.005 Duplicate 12-APR-1 0 19-APR-1 0 279 0.032 +1- 0.004 0.013 19-APR-1 0 26-APR-1 0 290 0.019 +1- 0.004 0.010 26-APR-1 0 03-MAY-1 0 146 0.017 +1- 0.007 0.022 03-MAY-1 0 11 -MAY- 10 345 0.014 +1- 0.003 0.009 11 -MAY-10 17-MAY-1 0 264 0.011 +1- 0.004 0.018 17-MAY-1 0 24-MAY-1 0 305 0.011 +1- 0.003 0.016 24-MAY-1 0 02-JUN-10 373 0.026 +1- 0.003 0.007 02-JUN-10 08-JUN-10 267 0.020 +1- 0.004 0.009 08-JUN-10 14-JUN-10 246 0.017 +1- 0.004 0.013 14-JUN-10 21-JUN-10 305 0.013 +1- 0.003 0.011 21-JUN-10 28-JUN-10 297 0.022 +1- 0.004 0.008 28-JUN-10 06-JUL-10 365 0.016 +1- 0.003 0.015 06-JUL-10 12-JUL-10 257 0.022 +1- 0.004 0.008 12-JUL-10 19-JUL-10 304 0.018 +1- 0.004 0.009 19-JUL-10 26-JUL-10 297 0.016 +1- 0.004 0.013 26-JUL-10 02-AUG-1 0 303 0.023 +1- 0.004 0.009 02-AUG-10 09-AUG-1 0 302 0.027 +1- 0.004 0.009 09-AUG-10 16-AUG-10 299 0.022 +1- 0.004 0.007 16-AUG-10 23-AUG-10 294 0.035 +1- 0.004 0.011 23-AUG-1 0 30-AUG-10 299 0.025 +1- 0.004 0.009 30-AUG-1 0 07-SEP-10 353 0.020 +1- 0.003 0.011 07-SEP-10 13-SEP-10 259 0.018 +1- 0.004 0.010 13-SEP-10 20-SEP-10 300 0.029 +1- 0.004 0.012 20-SEP-1 0 27-SEP-1 0 300 0.022 +1- 0.004 0.013 2010 Annual Radiological Environmental Operating Re'port Wolf Creek Generating Station Page C - 3

Air Particulate and Charcoal Filters Location: 018 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m33 ) (pCi/lm 3 )

27-SEP-10 04-OCT- 10 306 0.017 +1- 0.004 0.010 04-OCT- 10 11-OCT-10 295 0.037 +1- 0.004 0.009 11-OCT-10 19-OCT-1 0 342 0.038 +1- 0.004 0.009 19-OCT-10 25-OCT-1 0 252 0.037 +1- 0.005 0.015 25-OCT-10 01-NOV-10 307 0.023 +1- 0.004 0.013 01-NOV-10 09-NOV-10 319 0.021 +1- 0.004 0.017 01-NOV-10 09-NOV-10 319 0.022 +1- 0.004 Duplicate 09-NOV-1 0 15-NOV- 10 255 0.025 +1- 0.004 0.018 15-NOV- 10 22-NOV-1 0 304 0.038 +1- 0.004 0.013 22-NOV-10 29-NOV-1 0 305 0.036 +1- 0.004 0.013 29-NOV-10 06-DEC-1 0 316 0.041 +1- 0.004 0.012 06-DEC- 10 13-DEC-1 0 312 0.047 +1- 0.005 0.006 13-DEC-1 0 20-DEC-1 0 296 0.042 +1- 0.005 0.010 20-DEC-1 0 27-DEC-1 0 311 0.033 +1- 0.004 0.008 27-DEC-1 0 03-JAN-i 1 301 0.033 +1- 0.004 0.010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 4

Air Particulate and Charcoal Filters Location: 032 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m3 ) (pCi/nm 3 )

28-DEC-09 04-JAN-1 0 319 0.042 +1- 0.004 0.007 04-JAN-1 0 11-JAN-10 302 0.036 +1- 0.004 0.009 11-JAN-10 18-JAN-10 308 0.038 +1- 0.004 0.008 18-JAN-10 25-JAN- 10 287 0.019 +1- 0.004 0.012 25-JAN- 10 01-FEB-10 313 0.027 +1- 0.004 0.012 01-FEB-10 08-FEB-1 0 296 0.040 +1- 0.005 0.010 08-FEB-1 0 16-FEB-10 354 0.024 +1- 0.004 0.008 16-FEB-1 0 22-FEB-10 248 0.021 +1- 0.004 0.014 22-FEB-1 0 01-MAR-10 298 0.031 +1- 0.004 0.010 01-MAR-10 08-MAR- 10 290 0.023 +1- 0.004 0.008 08-MAR-1 0 15-MAR-10 298 0.010 -i-I- 0.003 0.014 15-MAR-10 22-MAR- 10 298 0.018 +1- 0.004 0.020 22-MAR-1 0 29-MAR-1 0 289 0.022 +1- 0.004 0.012 29-MAR-1 0 05-APR-10 277 0.026 +1- 0.004 0.012 05-APR-10 12-APR-10 282 0.027 +1- 0.004 0.007 12-APR-10 19-APR- 10 285 0.025 +1- 0.004 0.013 19-APR-10 26-APR-10 286 0.022 +1- 0.004 0.010 26-APR-10 03-MAY-1 0 288 0.020 +1- 0.004 0.011 26-APR-1 0 03-MAY- 10 288 0.018 +1- 0.004 Duplicate 03-MAY-1 0 11-MAY-10 340 0.013 +1- 0.003 0.010 11-MAY-10 17-MAY-10 259 0.010 +1- 0.004 0.018 17-MAY-10 24-MAY-1 0 307 0.012 +1- 0.003 0.016 24-MAY-1 0 02-JUN-10 367 0.027 +1- 0.003 0.008 02-JUN-10 08-JUN-10 270 0.024 +1- 0.004 0.009 08-JUN-10 14-JUN-10 249 0.013 +1- 0.004 0.012 14-JUN-10 21-JUN-10 306 0.015 +1- 0.003 0.011 14-JUN-10 21-JUN-10 306 0.012 +1- 0.003 Duplicate 21-JUN-10 28-JUN-10 300 0.020 +1- 0.004 0.008 28-JUN-10 06-JUL-10 347 0.016 +1- 0.003 0.016 06-JUL-10 12-JUL-10 257 0.033 +1- 0.005 0.008 12-JUL-10 19-JUL-10 299 0.024 +1- 0.004 0.009 19-JUL-10 26-JUL-10 266 0.017 +1- 0.004 0.014 26-JUL-10 02-AUG-1 0 301 0.023 +1- 0.004 0.009 02-AUG-1 0 09-AUG-1 0 306 0.032 -i-I- 0.004 0.009 09-AUG-10 16-AUG-10 299 0.021 +1- 0.004 0.007 16-AUG-10 23-AUG-10 290 0.031 +1- 0.004 0.011 23-AUG-10 30-AUG-10 296 0.031 +1- 0.004 0.009 30-AUG-10 07-SEP-10 346 0.019 +1- 0.003 0.011 07-SEP-10 13-SEP-10 257 0.018 +1- 0.004 0.010 13-SEP-10 20-SEP-10 297 0.029 +1- 0.004 0.012 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 5

Air Particulate and Charcoal Filters Location: 032 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCilm3 )

20-SEP-10 27-SEP-10 297 0.024 +1- 0.004 0.013 27-SEP-10 04-OCT- 10 302 0.016 +1- 0.004 0.011 04-OCT-1 0 11-OCT-10 288 0.039 +1- 0.005 0.009 11 -OCT-10 19-OCT-1 0 342 0.039 +1- 0.004 0.009 19-OCT-1 0 25-OCT-1 0 248 0.034 +1- 0.005 0.016 25-OCT-1 0 01-NOV-10 303 0.019 +1- 0.004 0.013 01-NOV-10 09-NOV-10 346 0.024 +1- 0.003 0.015 09-NOV-1 0 15-NOV-10 257 0.030 +1- 0.005 0.018 15-NOV-10 22-NOV-1 0 303 0.034 +1- 0.004 0.013 22-NOV-10 29-NOV-1 0 303 0.035 +1- 0.004 0.013 29-NOV-1 0 06-DEC-10 317 0.037 +1- 0.004 0.012 06-DEC-1 0 13-DEC-10 290 0.050 +1- 0.005 0.007 13-DEC-1 0 20-DEC-1 0 296 0.045 +1- 0.005 0.010 20-DEC-1 0 27-DEC-1 0 318 0.030 +1- 0.004 0.008 27-DEC-1 0 03-JAN-1i1 291 0.030 +1- 0.004 0.010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 6

Air Particulate and Charcoal Filters Location: 037 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/mr3 ) (pCi/rl 3 )

28-DEC-09 04-JAN-1 0 314 0.043 +1- 0.004 0.007 04-JAN-1 0 11-JAN-10 298 0.037 +1- 0.004 0.009 11-JAN-10 18-JAN-1 0 310 0.045 +1- 0.005 0.008 18-JAN-1 0 25-JAN-1 0 305 0.020 +1- 0.004 0.011 18-JAN-1 0 25-JAN-1 0 305 0.020 +1- 0.004 Duplicate 25-JAN-1 0 01-FEB-10 311 0.025 +1- 0.004 0.012 01-FEB-10 08-FEB-1 0 298 0.037 +1- 0.004 0.010 08-FEB-1 0 16-FEB-10 370 0.027 +1- 0.003 0.007 16-FEB-1 0 22-FEB-10 249 0.022 +1- 0.004 0.013 22-FEB-1 0 01-MAR-10 310 0.032 +1- 0.004 0.009 01-MAR- 10 08-MAR- 10 297 0.028 +1- 0.004 0.008 08-MAR-1 0 15-MAR-10 300 0.010 +1- 0.003 0.014 15-MAR-1 0 22-MAR-1 0 301 0.016 4-I- 0.004 0.020 22-MAR-1 0 29-MAR-1 0 295 0.021 +1- 0.004 0.012 29-MAR-1 0 05-APR-10 285 0.028 +1- 0.004 0.012 29-MAR-1 0 05-APR-10 285 0.023 +1- 0.004 Duplicate 05-APR-10 12-APR-10 296 0.025 +1- 0.004 0.007 12-APR-1 0 19-APR-10 290 0.026 +1- 0.004 0.013 19-APR-10 26-APR-1 0 299 0.019 +1- 0.004 0.010 26-APR-1 0 03-MAY-1 0 294 0.017 +1- 0.004 0.011 03-MAY-1 0 11 -MAY-10 347 0.017 +1- 0.003 0.009 11 -MAY- 10 17-MAY-1 0 259 0.011 +1- 0.004 0.018 17-MAY-1 0 24-MAY-1 0 273 0.015 +1- 0.004 0.018 24-MAY-1 0 02-JUN-10 375 0.025 +1- 0.003 0.007 02-JUN-10 08-JUN-10 269 0.031 +1- 0.005 0.009 08-JUN-10 14-JUN-10 211 0.014 +1- 0.005 0.015 14-JUN-10 21-JUN-10 306 0.012 +1- 0.003 0.011 21-JUN-10 28-JUN-10 309 0.018 +1- 0.004 0.007 21-JUN-10 28-JUN-10 309 0.023 +1- 0.004 Duplicate 28-JUN-10 06-JUL-10 346 0.015 +1- 0.003 0.016 06-JUL-10 12-JUL-10 256 0.025 +1- 0.004 0.008 12-JUL-10 19-JUL-10 300 0.021 +1- 0.004 0.009 19-JUL-10 26-JUL-10 299 0.019 +1- 0.004 0.012 26-JUL-10 02-AUG-1 0 304 0.026 +1- 0.004 0.009 02-AUG-1 0 09-AUG-1 0 308 0.029 +1- 0.004 0.009 09-AUG-1 0 16-AUG- 10 301 0.021 +1- 0.004 0.007 16-AUG-10 23-AUG-1 0 293 0.034 +1- 0.004 0.011 23-AUG-1 0 30-AUG-1 0 297 0.024 +1- 0.004 0.009 30-AUG-1 0 07-SEP-10 352 0.015 +1- 0.003 0.011 07-SEP-10 13-SEP-10 257 0.019 +1- 0.004 0.010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 7

Air Particulate and Charcoal Filters Location: 037 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCilm3 )

13-SEP-10 20-SEP-1 0 297 0.028 +1- 0.004 < 0.012 20-SEP-10 27-SEP-10 310 0.025 +1- 0.004 < 0.012 20-SEP-10 27-SEP-10 310 0.025 +1- 0.004 Duplicate 27-SEP-1 0 04-OCT- 10 307 0.021 +1- 0.004 < 0.010 04-OCT-1 0 11-OCT-10 298 0.033 +1- 0.004

• 0.009 11-OCT-10 19-OCT-1 0 344 0.038 +1- 0.004 < 0.009 11 -OCT-10 19-OCT-1 0 344 0.035 +1- 0.004 Duplicate 19-OCT-1 0 25-OCT-1 0 255 0.036 +1- 0.005 0.015 25-OCT-1 0 01-NOV-10 311 0.024 +1- 0.004 0.013 01-NOV-10 09-NOV-10 351 0.021 +1- 0.003 0.015 09-NOV-1 0 15-NOV- 10 258 0.030 +1- 0.005 0.018 09-NOV-1 0 15-NOV- 10 258 0.027 +1- 0.004 Duplicate 15-NOV- 10 22-NOV-1 0 306 0.036 +1- 0.004 0.013 22-NOV-10 29-NOV-1 0 304 0.036 +1- 0.004 0.013 29-NOV-1 0 06-DEC-10 321 0.037 +1- 0.004 0.012 06-DEC-1 0 13-DEC-1 0 304 0.048 +1- 0.005 0.007 13-DEC-1 0 20-DEC-1 0 296 0.041 +1- 0.005 0.010 20-DEC-1 0 27-DEC-1 0 332 0.033 +1- 0.004 0.008 27-DEC-1 0 03-JAN-i 1 290 0.031 +1- 0.004 0.010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 8

Air Particulate and Charcoal Filters Location: 049 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCilm 3 ) (pCi/lm 3 )

28-DEC-09 04-JAN-1 0 321 0.042 +1- 0.004 0.006 04-JAN- 10 11-JAN-10 290 0.038 +1- 0.004 0.010 11-JAN-10 18-JAN-1 0 308 0.048 +1- 0.005 0.008 18-JAN-1 0 25-JAN-1 0 304 0.017 +1- 0.004 0.011 25-JAN- 10 01-FEB-10 284 0.025 +1- 0.004 0.013 01-FEB-10 08-FEB-1 0 294 0.044 +1- 0.005 0.010 01-FEB-10 08-FEB-10 294 0.039 +1- 0.005 Duplicate 08-FEB-10 16-FEB-10 359 0.030 +1- 0.004 < 0.008 16-FEB-1 0 22-FEB-10 254 0.024 +1- 0.004 < 0.013 22-FEB-1 0 01-MAR-10 301 0.031 +1- 0.004 < 0.010 01-MAR-10 08-MAR-1 0 299 0.024 +1- 0.004 < 0.008 08-MAR-1 0 15-MAR-1 0 300 0.007 +1- 0.003 < 0.014 15-MAR-1 0 22-MAR-10 294 0.018 +1- 0.004 < 0.020 22-MAR-1 0 29-MAR-1 0 289 0.020 +1- 0.004 < 0.012 29-MAR-1 0 05-APR-1 0 290 0.025 +1- 0.004 < 0.012 05-APR-1 0 12-APR-1 0 273 0.023 +1- 0.004 < 0.008 12-APR-10 19-APR- 10 294 0.023 +1- 0.004 < 0.012 19-APR-10 26-APR-1 0 265 0.022 +1- 0.004 < 0.011 26-APR-1 0 03-MAY-1 0 298 0.017 +1- 0.004 < 0.011 03-MAY-1 0 11-MAY-10 345 0.012 +1- 0.003 < 0.009 03-MAY-1 0 11-MAY-10 345 0.014 +1- 0.003 Duplicate 11 -MAY- 10 17-MAY-10 261 0.007 +1- 0.003 < 0.018 17-MAY-1 0 24-MAY-1 0 308 0.012 +1- 0.003 < 0.016 24-MAY-1 0 02-JUN-10 349 0.027 +1- 0.003 < 0.008 02-JUN-10 08-JUN-10 288 0.021 +1- 0.004 < 0.009 08-JUN-10 14-JUN-10 247 0.014 +1- 0.004 < 0.012 14-JUN-10 21-JUN-10 300 0.016 +1- 0.004 < 0.011 21-JUN-10 28-JUN-10 301 0.017 +1- 0.004 < 0.008 28-JUN-10 06-JUL-10 325 0.017 +1- 0.004 < 0.017 06-JUL-10 12-JUL-10 256 0.020 +1- 0.004 < 0.008 12-JUL-10 19-JUL-10 294 0.020 +1- 0.004 < 0.010 19-JUL-10 26-JUL-10 297 0.019 +1- 0.004 < 0.013 26-JUL-10 02-AUG-1 0 298 0.024 +1- 0.004 < 0.009 26-JUL-10 02-AUG-1 0 298 0.025 +1- 0.004 Duplicate 02-AUG-1 0 09-AUG-1 0 302 0.030 +1- 0.004 < 0.009 09-AUG-1 0 16-AUG-10 301 0.020 +1- 0.004 < 0.007 16-AUG-10 23-AUG-10 293 0.039 +1- 0.004 < 0.011 23-AUG-1 0 30-AUG-1 0 297 0.026 +1- 0.004 < 0.009 23-AUG-1 0 30-AUG-10 297 0.027 +1- 0.004 Duplicate 30-AUG-1 0 07-SEP-10 346 0.018 +1- 0.003 < 0.011 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 9

Air Particulate and Charcoal Filters Location: 049 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis 3)

(pCi/m3 (pCi/rm3 )

30-AUG-1 0 07-SEP-1 0 346 0.017 +1- 0.003 Duplicate 07-SEP-10 13-SEP-10 258 0.019 +1- 0.004 0.010 13-SEP-10 20-SEP-10 296 0.030 +1- 0.004 0.013 20-SEP-10 27-SEP-10 *304 0.026 +1- 0.004 0.013 27-SEP-10 04-OCT-1 0 300 0.019 +1- 0.004 0.011 04-OCT-1 0 11-OCT-10 296 0.039 +1- 0.005 0.009 04-OCT-1 0 11-OCT-10 296 0.033 +1- 0.004 Duplicate 11 -OCT-10 19-OCT-1 0 341 0.039 +1- 0.004 0.009 19-OCT-1 0 25-OCT-10 250 0.041 +1- 0.005 0.016 25-OCT- 10 01-NOV-10 307 0.026 +1- 0.004 0.013 01-NOV-10 09-NOV-1 0 345 0.024 +1- 0.003 0.015 09-NOV-1 0 15-NOV- 10 261 0.031 +1- 0.005 0.018 15-NOV-1 0 22-NOV-1 0 301 0.037 +1- 0.004 0.013 22-NOV-1 0 29-NOV-10 305 0.037 +1- 0.004 0.013 29-NOV-1 0 06-DEC-1 0 323 0.041 +1- 0.004 0.012 06-DEC-1 0 13-DEC-1 0 301 0.048 +1- 0.005 0.007 13-DEC-1 0 20-DEC-1 0 293 0.046 +1- 0.005 0.010 20-DEC-1 0 27-DEC-1 0 316 0.033 +1- 0.004 0.008 27-DEC-1 0 03-JAN-i 1 313 0.030 +1- 0.004 0.010 27-DEC-10 03-JAN-1i1 313 0.027 +1- 0.004 Duplicate 2010 Annual Radiological EnVironmental Operating Report Wolf Creek Generating Station Page C- 10

Air Particulate and Charcoal Filters Location: 053 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCi/lm 3 )

28-DEC-09 04-JAN-1 0 306 0.041 +1- 0.004 < 0.007 04-JAN-1 0 11-JAN-10 309 0.039 +1- 0.004 < 0.009 11-JAN-10 18-JAN-1 0 309 0.049 +1- 0.005 < 0.008 18-JAN-1 0 25-JAN-1 0 293 0.018 -i-I- 0.004 < 0.011 25-JAN-1 0 01-FEB-10 310 0.027 +1- 0.004 < 0.012 01-FEB-10 08-FEB-1 0 305 0.040 +1- 0.004 < 0.009 08-FEB-1 0 16-FEB-1 0 358 0.029 +1- 0.004 < 0.008 16-FEB-1 0 22-FEB-1 0 247 0.024 +1- 0.004 < 0.014 22-FEB-10 01-MAR-10 306 0.031 +1- 0.004 < 0.010 01-MAR-10 08-MAR-1 0 296 0.027 +1- 0.004 < 0.008 08-MAR-1 0 15-MAR-10 292 0.010 +1- 0.004 < 0.014 15-MAR-1 0 22-MAR-1 0 305 0.020 +1- 0.004 < 0.019 22-MAR-1 0 29-MAR-1 0 298 0.023 +1- 0.004 < 0.011 29-MAR- 10 05-APR-1 0 301 0.027 +1- 0.004 < 0.011 05-APR-1 0 12-APR-10 298 0.029 +1- 0.004 < 0.007 12-APR-10 19-APR-10 301 0.022 +1- 0.004 < 0.012 19-APR-1 0 26-APR-1 0 305 0.018 +1- 0.004 < 0.009 26-APR-1 0 03-MAY-1 0 292 0.021 +1- 0.004 < 0.011 03-MAY-1 0 11 -MAY-10 337 0.016 +1- 0.003 < 0.010 11 -MAY-10 17-MAY-1 0 54 < 0.088 11 -MAY- 10 17-MAY-1 0 54 0.025 17-MAY-1 0 24-MAY-1 0 301 0.012 +1- 0.003 < 0.016 24-MAY-1 0 02-JUN-10 376 0.024 +1- 0.003 < 0.007 24-MAY-1 0 02-JUN-10 376 0.027 +1- 0.003 Duplicate 02-JUN-10 08-JUN-10 268 0.024 +1- 0.004 0.009 08-JUN-10 14-JUN-10 246 0.018 +1- 0.004 0.013 14-JUN-10 21-JUN-10 299 0.009 +1- 0.003 0.011 21-JUN-10 28-JUN-10 294 0.025 +1- 0.004 0.008 28-JUN-10 06-JUL-10 368 0.017 +1- 0.003 0.015 06-JUL-10 12-JUL-10 257 0.019 +1- 0.004 0.008 12-JUL-10 19-JUL-10 299 0.024 +1- 0.004 0.009 19-JUL-10 26-JUL-10 300 0.018 +1- 0.004 0.012 26-JUL-10 02-AUG-1 0 302 0.021 +1- 0.004 0.009 02-AUG-1 0 09-AUG-10 301 0.028 +1- 0.004 0.009 02-AUG-10 09-AUG-10 301 0.030 +1- 0.004 Duplicate 09-AUG-10 16-AUG-10 302 0.023 +1- 0.004 0.007 16-AUG-10 23-AUG-1 0 297 0.035 +1- 0.004 0.011 23-AUG-1 0 30-AUG-1 0 299 0.027 +1- 0.004 0.009 30-AUG-1 0 07-SEP-10 351 0.016 +1- 0.003 0.011 07-SEP-1 0 13-SEP-10 257 0.018 +1- 0.004 0.010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 11

Air Particulate and Charcoal Filters Location: 053 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/lm 3 ) (pCi/m 3 )

13-SEP-1 0 20-SEP-1 0 298 0.027 +1- 0.004 0.012 20-SEP-1 0 27-SEP-10 302 0.021 +1- 0.004 0.013 27-SEP-10 04-OCT-1 0 312 0.019 +1- 0.004 0.010 04-OCT-1 0 11 -OCT-10 296 0.037 +1- 0.004 0.009 11-OCT-10 19-OCT-1 0 345 0.037 +1- 0.004 0.009 19-OCT-1 0 25-OCT-1 0 255 0.033 +1- 0.005 0.015 25-OCT-1 0 01-NOV-10 306 0.020 +1- 0.004 0.013 01-NOV-10 09-NOV-1 0 352 0.020 +1- 0.003 0.015 09-NOV-1 0 15-NOV-1 0 256 0.028 +1- 0.005 0.018 15-NOV-10 22-NOV-1 0 303 0.032 +1- 0.004 0.013 22-NOV-1 0 29-NOV-10 296 0.034 +1- 0.004 0.014 29-NOV-1 0 06-DEC-1 0 312 0.039 +1- 0.004 0.012 06-DEC-10 13-DEC-10 308 0.052 +1- 0.005 0.006 13-DEC-1 0 20-DEC-10 294 0.045 +1- 0.005 0.010 20-DEC-1 0 27-DEC-10 315 0.032 +1- 0.004 0.008 27-DEC-1 0 03-JAN-1i1 295 0.031 +1- 0.004 0.010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 12

Quarterly Air Particulate - Gamma Location: 002 29-MAR-10 Nuclide Concentration (pCilm3 )

BE-7 0.068+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65

• 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 28-JUN-10 Nuclide Concentration (pCi/m 3 )

BE-7 0.092+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 27-SEP-10 Nuclide Concentration (pCi/m 3 )

BE-7 0.094+/- 0.019 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < *0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 03-JAN-I 1 Nuclide Concentration (pCi/m 3 )

BE-7 0.060+/- 0.013 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 13

Quarterly Air Particulate - Gamma Location: 018 29-MAR-1 0 Nuclide Concentration (pCi/m 3 )

BE-7 0.077+/- 0.013 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 28-JUN-10 3 Nuclide Concentration (pCi/m )

BE-7 0.091+/- 0.017 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 27-SEP-10 3 Nuclide Concentration (pCi/m )

BE-7 0.093+/- 0.018 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 03-JAN-11 Nuclide Concentration (pCilm 3 )

BE-7 0.068+/- 0.011 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 14

Quarterly Air Particulate - Gamma Location: 032 29-MAR-1 0 Nuclide Concentration (pCi/m3 )

BE-7 0.089+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 28-JUN-10 3 Nuclide Concentration (pCi/m )

BE-7 0.091+/- 0.015

• BE-7 0.091+/- 0.015 MN-54 < 0.001

• MN-54 < 0.001 CO-58 < 0.001

• CO-58 < 0.001 FE-59 < 0.001 FE-59 < 0.002

• CO-60 < 0.001

• CO-60 < 0.001 ZN-65 < 0.001

• ZN-65 < 0.002 ZR-NB-95 < 0.001

• ZR-NB-95 < 0.001 CS-1 34 < 0.001

• CS-1 34 < 0.001 CS-1 37 < 0.001 CS-1 37 < 0.001 27-SEP-10 3 Nuclide Concentration (pCi/m )

BE-7 0.080+/- 0.019 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-1 34 0.001 CS-1 37 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 15

Quarterly Air Particulate - Gamma Location: 032 03-JAN-1 I Nuclide Concentration (pCilm3 )

BE-7 0.070+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 16

Quarterly Air Particulate - Gamma Location: 037 29-MAR-1 0 Nuclide Concentration (pCi/m 3 )

BE-7 0.078+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 28-JUN-10 3 Nuclide Concentration (DCilm )

BE-7 0.100+/- 0.017 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 27-SEP-10 3 Nuclide Concentration (DCilm )

BE-7 0.080+/- 0.016 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-137 < 0.001 03-JAN-1 I 3 Nuclide Concentration (DCi/m )

BE-7 0.071+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 17

Quarterly Air Particulate - Gamma Location: 049 29-MAR-1 0 Nuclide Concentration (pCiIm 3 )

BE-7 0.070+/- 0.013 BE-7 0.080+/- 0.013 MN-54 < 0.001 MN-54 < 0.001 CO-58 < 0.001 CO-58 < 0.001 FE-59 < 0.001 FE-59 < 0.001 CO-60 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 CS-1 37 < 0.001 28-JUN-10 3 Nuclide Concentration (pCilm )

BE-7 0.105+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-137 < 0.001 27-SEP-10 Nuclide Concentration (pCilm3 )

BE-7 0.090+!- 0.017 MN-54 0.001 CO-58 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 18

Quarterly Air Particulate - Gamma Location: 049 03-JAN-1 I Nuclide Concentration (pCi/m 3 )

BE-7 0.058+/- 0.013 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 19

Quarterly Air Particulate - Gamma Location: 053 29-MAR-1 0 Nuclide Concentration (pCi/m 3 )

BE-7 0.082+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 28-JUN-10 Nuclide Concentration (pCilm 3 )

BE-7 0.099+/- 0.016 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 27-SEP-10 Nuclide Concentration (pCilm 3 )

BE-7 0.086+/- 0.018 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 03-JAN-Il Nuclide Concentration (pCi/m 3 )

BE-7 0.059+/- 0.011 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 20

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-JAN-1 0 MN-54 1.8 27-JAN- 10 CO-58 1.7 27-JAN- 10 FE-59 3.2 27-JAN- 10 CO-60 1.5 27-JAN- 10 ZN-65 2.9 27-JAN-1 0 ZR-NB-95 1.5 27-JAN- 10 1-131 3.0 27-JAN-1 0 CS-1 34 2.1 27-JAN-1 0 CS-137 2.7 27-JAN- 10 BA-LA-140 4.4 27-JAN-10 H-3 163.0 22-FEB-10 MN-54 2.3 22-FEB-10 CO-58 3.2 22-FEB-10 FE-59 3.1 22-FEB-10 CO-60 3.1 22-FEB-1 0 ZN-65 4.2 22-FEB-1 0 ZR-NB-95 1.9 22-FEB-10 1-131 4.3 22-FEB-10 CS-134 2.9 22-FEB-1 0 CS-1 37 3.5 22-FEB-1 0 BA-LA-140 2.5 22-FEB-1 0 H-3 152.0 29-MAR-1 0 MN-54 2.8 29-MAR-1 0 CO-58 3.0 29-MAR- 10 FE-59 6.1 29-MAR-10 CO-60 2.3 29-MAR-1 0 ZN-65 2.2 29-MAR- 10 ZR-NB-95 4.0 29-MAR- 10 1-131 4.2 29-MAR-1 0 CS-134 2.7 29-MAR-1 0 CS-137 3.4 29-MAR-1 0 BA-LA- 140 2.0 29-MAR- 10 H-3 177.0 22-APR-1 0 MN-54 5.3 22-APR-1 0 CO-58 5.4 22-APR-1 0 FE-59 3.7 22-APR-1 0 CO-60 3.4 22-APR-1 0 ZN-65 5.0 22-APR-1 0 ZR-NB-95 6.2 22-APR-10 1-131 7.1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 21

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-APR-10 CS-1 34 5.2 22-APR-1 0 CS-1 37 5.2 22-APR-1 0 BA-LA- 140 5.0 22-APR-1 0 H-3 175.0 17-MAY-10 MN-54 3.3 17-MAY-10 CO-58 2.1 17-MAY-1 0 FE-59 5.8 17-MAY-1 0 CO-60 1.5 17-MAY-10 ZN-65 5.0 17-MAY-10 ZR-NB-95 2.1 17-MAY-1 0 1-131 5.2 17-MAY-1 0 CS-1 34 4.0 17-MAY-10 CS-1 37 3.6 17-MAY-10 BA-LA-140 2.5 17-MAY-10 H-3 151.0 14-JUN-10 MN-54 1.9 Duplicate 14-JUN-10 MN-54 4.4 14-JUN-10 CO-58 4.1 Duplicate 14-JUN-10 CO-58 2.1 14-JUN-10 FE-59 5.0 Duplicate 14-JUN-10 FE-59 5.1 14-JUN-10 CO-60 1.8 Duplicate 14-JUN-10 CO-60 4.0 14-JUN-10 ZN-65 5.0 Duplicate 14-JUN-10 ZN-65 8.1 14-JUN-10 ZR-NB-95 3.7 Duplicate 14-JUN-10 ZR-NB-95 3.8 14-JUN-10 1-131 6.8 Duplicate 14-JUN-10 1-131 5.6 14-JUN-10 CS-1 34 4.1 Duplicate 14-JUN-10 CS-134 4.5 14-JUN-10 CS-137 2.7 Duplicate 14-JUN-10 CS-137 4.7 14-JUN-10 BA-LA- 140 2.8 Duplicate 14-JUN-10 BA-LA-140 4.4 14-JUN-10 H-3 162.0 Duplicate 14-JUN-10 H-3 162.0 19-JUL-10 MN-54 3.6 19-JUL-10 CO-58 2.8 19-JUL-10 FE-59 4.7 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 22

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 19-JUL-10 CO-60 2.7 19-JUL-10 ZN-65 5.1 19-JUL-10 ZR-NB-95 4.0 19-JUL-10 1-131 7.0 19-JUL-10 CS-134 3.7 19-JUL-10 CS-137 2.9 19-JUL-10 BA-LA-140 1.8 19-JUL-10 H-3 179.0 23-AUG-1 0 MN-54 3.0 23-AUG-10 CO-58 4.2 23-AUG-1 0 FE-59 6.2 23-AUG-1 0 CO-60 3.6 23-AUG-10 ZN-65 3.4 23-AUG-1 0 ZR-NB-95 3.9 23-AUG- 10 1-131 7.6 23-AUG-1 0 CS-1 34 3.0 23-AUG-10 CS-1 37 4.7 23-AUG-10 BA-LA-140 3.4 23-AUG-1 0 H-3 181.0 27-SEP-10 MN-54 3.4 Duplicate 27-SEP-10 MN-54 3.2 27-SEP-10 CO-58 4.3 Duplicate 27-SEP-10 CO-58 2.3 27-SEP-10 FE-59 5.2 Duplicate 27-SEP-10 FE-59 3.0 27-SEP-10 CO-60 4.0 Duplicate 27-SEP-10 CO-60 3.3 27-SEP-10 ZN-65 6.3 Duplicate 27-SEP-10 ZN-65 4.1 27-SEP-10 ZR-NB-95 4.8 Duplicate 27-SEP-10 ZR-NB-95 3.6 27-SEP-10 1-131 9.3 Duplicate 27-SEP-10 1-131 4.9 27-SEP-10 CS-134 5.2 Duplicate 27-SEP-10 CS-134 2.8 27-SEP-1 0 CS-137 3.9 Duplicate 27-SEP-1 0 CS-137 3.0 27-SEP-10 BA-LA-140 4.4 Duplicate 27-SEP-10 BA-LA-140 1.3 27-SEP-1 0 H-3 160.0 Duplicate 2010 Annual Radiological Environmental- Operating Report Wolf Creek Generating Station Page C- 23

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-SEP-10 H-3 160.0 18-OCT- 10 MN-54 3.0 18-OCT- 10 CO-58 3.4 18-OCT-10 FE-59 6.9 18-OCT-10 CO-60 4.3 18-OCT-1 0 ZN-65 5.3 18-OCT-1 0 ZR-NB-95 3.7 18-OCT-1 0 1-131 10.7 18-OCT-1 0 CS-1 34 3.3 18-OCT-10 CS-1 37 3.8 18-OCT-10 BA-LA-140 5.2 18-OCT-1 0 H-3 159.0 15-NOV- 10 MN-54 2.5 15-NOV-10 CO-58 3.2 15-NOV-10 FE-59 4.3 15-NOV-10 CO-60 3.5 15-NOV-10 ZN-65 5.8

.15-NOV-10 ZR-NB-95 2.9 15-NOV-10 1-131 5.2 15-NOV-10 CS-1 34 2.7 15-NOV-10 CS-1 37 3.2 15-NOV-10 BA-LA-140 2.7 15-NOV-10 H-3 163.0 20-DEC-10 MN-54 2.7 20-DEC-1 0 CO-58 2.3 20-DEC-10 FE-59 4.4 20-DEC-1 0 CO-60 3.0 20-DEC-1 0 ZN-65 4.1 20-DEC-1 0 ZR-NB-95 2.6 20-DEC-1 0 1-131 5.0 20-DEC-1 0 CS-134 2.7 20-DEC-10 CS-137 3.1 20-DEC-10 BA-LA-140 3.5 20-DEC-1 0 H-3 161.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 24

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-JAN-1 0 MN-54 2.0 27-JAN-1 0 CO-58 2.7 27-JAN-1 0 FE-59 3.0 27-JAN- 10 CO-60 0.9 27-JAN- 10 ZN-65 5.8 27-JAN- 10 ZR-NB-95 3.2 27-JAN- 10 1-131 4.8 27-JAN-1 0 CS-134 2.9 27-JAN-1 0 CS-137 1.8 27-JAN- 10 BA-LA-140 2.3 27-JAN- 10 H-3 12,165+1 315.0 22-FEB-1 0 MN-54 2.7 22-FEB-10 CO-58 1.2 22-FEB-10 FE-59 2.7 22-FEB-10 CO-60 2.0 22-FEB-10 ZN-65 5.3 22-FEB-10 ZR-NB-95 3.0 22-FEB-1 0 1-131 4.4 22-FEB-10 CS-134 2.7 22-FEB-10 CS-1 37 2.8 22-FEB-10 BA-LA- 140 4.8 22-FEB-1 0 H-3 11,841 +1 322.0 29-MAR- 10 MN-54 2.6 29-MAR-1 0 CO-58 3.4 29-MAR-1 0 FE-59 3.4 29-MAR-1 0 CO-60 2.7 29-MAR-1 0 ZN-65 7.2 29-MAR-1 0 ZR-NB-95 4.1 29-MAR-1 0 1-131 4.0 29-MAR-1 0 CS-134 3.7 29-MAR-1 0 CS-1 37 3.7 29-MAR-1 0 BA-LA-140 2.1 29-MAR- 10 H-3 12,324 +- 315.0 22-APR-10 MN-54 2.1 22-APR-10 CO-58 3.3 22-APR-10 FE-59 4.4 22-APR-10 CO-60 2.9 22-APR-10 ZN-65 6.5 22-APR-10 ZR-NB-95 4.0 22-APR-1 0 1-131 8.1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 25

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-APR-1 0 CS-134 3.6 22-APR-10 CS-1 37 4.3 22-APR-1 0 BA-LA-140 4.2 22-APR-1 0 H-3 12,195 +/- 309.0 17-MAY-1 0 MN-54 4.6 17-MAY-1 0 CO-58 3.9 17-MAY-1 0 FE-59 8.9 17-MAY-1 0 CO-60 3.8 17-MAY-1 0 ZN-65 5.6 17-MAY-10 ZR-NB-95 3.4 17-MAY-10 1-131 8.4 17-MAY-10 CS-134 4.2 17-MAY-1 0 CS-137 4.4 17-MAY-1 0 BA-LA- 140 3.9 17-MAY-10 H-3 10,746+1 308.0 14-JUN-10 MN-54 3.1 14-JUN-10 CO-58 3.7 14-JUN-10 FE-59 4.1 14-JUN-10 CO-60 1.6 14-JUN-10 ZN-65 5.3 14-JUN-10 ZR-NB-95 3.0 14-JUN-10 1-131 4.4 14-JUN-10 CS-134 3.5 14-JUN-10 CS-1 37 5.2 14-JUN-10 BA-LA-140 2.7 14-JUN-10 H-3 10,987+- 323.0 19-JUL-10 MN-54 3.0 19-JUL-10 CO-58 2.1 19-JUL-10 FE-59 6.1 19-JUL-10 CO-60 2.4 19-JUL-10 ZN-65 3.9 19-JUL-10 ZR-NB-95 3.9 19-JUL-10 1-131 6.5 19-JUL-10 CS-134 3.0 19-JUL-10 CS-1 37 4.5 19-JUL-10 BA-LA- 140 2.2 19-JUL-10 H-3 9,645+- 281.0 23-AUG-1 0 MN-54 2.9 23-AUG-1 0 CO-58 2.3 23-AUG-1 0 FE-59 7.6 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 26

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 23-AUG-1 0 CO-60 3.8 23-AUG-1 0 ZN-65 3.9 23-AUG-1 0 ZR-NB-95 3.4 23-AUG-1 0 1-131 7.3 23-AUG-1 0 CS-134 2.9 23-AUG-10 CS-1 37 5.0 23-AUG-1 0 BA-LA-140 4.0 23-AUG-10 H-3 i0,097 +1- 294.0 27-SEP-10 MN-54 3.4 27-SEP-10 CO-58 3.6 27-SEP-1 0 FE-59 4.3 27-SEP-10 CO-60 4.3 27-SEP-10 ZN-65 4.1 27-SEP-10 ZR-NB-95 4.0 27-SEP-1 0 1-131 4.7 27-SEP-1 0 CS-134 1.7 27-SEP-10 CS-1 37 4.4 27-SEP-1 0 BA-LA-140 2.5 27-SEP-1 0 H-3 10,914+- 322.0 27-SEP-1 0 FE-55 152.0 18-OCT-1 0 MN-54 2.9 18-OCT-1 0 CO-58 2.5 18-OCT-10 FE-59 4.6 18-OCT-10 CO-60 5.1 18-OCT-1 0 ZN-65 4.0 18-OCT-1 0 ZR-NB-95 2.7 18-OCT-10 1-131 8.3 18-OCT-1 0 CS-134 3.0 18-OCT-1 0 CS-1 37 3.8 18-OCT-1 0 BA-LA-140 3.4 18-OCT-1 0 H-3 10,689+1 316.0 15-NOV-1 0 MN-54 4.0 15-NOV-10 CO-58 2.5 15-NOV-10 FE-59 3.7 15-NOV-1 0 CO-60 3.9 15-NOV-10 ZN-65 4.3 15-NOV-1 0 ZR-NB-95 5.2 15-NOV-10 1-131 6.6 15-NOV-10 CS-134 3.5 15-NOV- 10 CS-137 3.6 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 27

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 15-NOV- 10 BA-LA-140 < 4.3 15-NOV- 10 H-3 13,436 +/- 355.0 20-DEC-10 MN-54 < 2.6 20-DEC-10 CO-58 < 2.5 20-DEC-1 0 FE-59 < 3.9 20-DEC-1 0 CO-60 < 1.2 20-DEC-10 ZN-65 < 2.7 20-DEC-1 0 ZR-NB-95 < 2.9 20-DEC-1 0 1-131 < 4.5 20-DEC-1 0 CS-134 < 2.4 20-DEC-1 0 CS-137 < 3.7 20-DEC-10 BA-LA-140 < 2.2 20-DEC-1 0 H-3 12,093 +/- 320.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 28

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-FEB-1 0 MN-54 2.7 22-FEB-1 0 CO-58 4.7 22-FEB-10 FE-59 3.4 22-FEB-10 CO-60 2.6 22-FEB-1 0 ZN-65 8.0 22-FEB-1 0 ZR-NB-95 3.3 22-FEB-1 0 CS-134 4.3 22-FEB-1 0 CS-137 4.9 22-FEB-10 BA-LA-140 2.2 22-FEB-1 0 H-3 152.0 22-FEB-1 0 1-131 (CHEM) 0.274 24-MAY-1 0 MN-54 2.6 24-MAY-1 0 CO-58 1.9 24-MAY-1 0 FE-59 3.2 24-MAY-1 0 CO-60 3.0 24-MAY-1 0 ZN-65 7.0 24-MAY-1 0 ZR-NB-95 3.2 24-MAY- 10 CS-134 3.9 24-MAY- 10 CS-137 3.3 24-MAY- 10 BA-LA-140 1.3 24-MAY-1 0 H-3 146.0 24-MAY-1 0 1-131 (CHEM) 0.248 23-AUG-1 0 MN-54 3.8 23-AUG-1 0 CO-58 2.2 23-AUG-1 0 FE-59 5.6 23-AUG-10 CO-60 2.9 23-AUG-10 ZN-65 4.2 23-AUG-10 ZR-NB-95 3.0 23-AUG-1 0 CS-134 3.9 23-AUG-1 0 CS-1 37 2.6 23-AUG-1 0 BA-LA-140 3.1 23-AUG-1 0 H-3 181.0 23-AUG-1 0 1-131 (CHEM) 0.232 22-NOV-1 0 MN-54 3.2 22-NOV-1 0 CO-58 7.3 22-NOV-1 0 FE-59 5.1 22-NOV-1 0 CO-60 4.4 22-NOV-1 0 ZN-65 11.0 22-NOV-1 0 ZR-NB-95 5.5 22-NOV-10 CS-134 4.8 22-NOV-10 CS-1 37 6.1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 29

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-NOV-1 0 BA-LA-140 < 5.6 22-NOV-10 H-3 < 144.0 22-NOV-10 1-131 (CHEM) < 0.29 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 30

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-FEB-10 MN-54 2.5 22-FEB-1 0 CO-58 2.3 22-FEB-1 0 FE-59 4.9 22-FEB-1 0 CO-60 3.2 22-FEB-1 0 ZN-65 5.1 22-FEB-1 0 ZR-NB-95 2.6 22-FEB-10 CS-134 2.0 22-FEB-10 CS-1 37 4.0 22-FEB-1 0 BA-LA-140 2.5 22-FEB-1 0 H-3 152.0 22-FEB-1 0 1-131 (CHEM) 0.193 24-MAY-1 0 MN-54 2.7 24-MAY-1 0 CO-58 2.8 24-MAY-1 0 FE-59 3.7 24-MAY-1 0 CO-60 3.2 24-MAY-1 0 ZN-65 5.0 24-MAY-1 0 ZR-NB-95 2.5 24-MAY-1 0 CS-134 2.6 24-MAY-1 0 CS-137 3.6 24-MAY-1 0 BA-LA-140 2.2 24-MAY-1 0 H-3 146.0 24-MAY-1 0 1-131 (CHEM) 0.247 23-AUG-1 0 MN-54 2.7 23-AUG-10 CO-58 2.6 23-AUG-10 FE-59 6.2 23-AUG-10 CO-60 3.6 23-AUG-1 0 ZN-65 4.6 23-AUG-1 0 ZR-NB-95 4.2 23-AUG-10 CS-134 3.4 23-AUG-10 CS-137 5.3 23-AUG-10 BA-LA- 140 4.5 23-AUG-10 H-3 181.0 23-AUG-1 0 1-131 (CHEM) 0.242 22-NOV-10 MN-54 4.0 22-NOV-1 0 CO-58 2.6 22-NOV-1 0 FE-59 5.4 22-NOV-1 0 CO-60 3.3 22-NOV-1 0 ZN-65 5.9 22-NOV-1 0 ZR-NB-95 4.0 22-NOV-1 0 CS-134 4.1 22-NOV-1 0 CS-137 3.2 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 31

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-NOV-1 0 BA-LA-140

• 2.9 22-NOV-1 0 H-3 < 144.0 22-NOV-1 0 1-131 (CHEM) < 0.449 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 32

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-FEB-1 0 MN-54 3.3 22-FEB-10 CO-58 3.1 22-FEB-1 0 FE-59 5.3 22-FEB-10 CO-60 2.6 22-FEB-1 0 ZN-65 2.3 22-FEB-1 0 ZR-NB-95 1.9 22-FEB-1 0 CS-1 34 2.6 22-FEB-1 0 CS-1 37 3.0 22-FEB-1 0 BA-LA-140 3.1 22-FEB-1 0 H-3 152.0 22-FEB-1 0 1-131 (CHEM) 0.466 24-MAY-10 MN-54 3.9 24-MAY-1 0 CO-58 4.4 24-MAY-1 0 FE-59 3.9 24-MAY- 10 CO-60 3.8 24-MAY- 10 ZN-65 7.5 24-MAY-1 0 ZR-NB-95 2.7 24-MAY-1 0 CS-134 4.5 24-MAY-1 0 CS-1 37 5.3 24-MAY-1 0 BA-LA-140 3.5 24-MAY-1 0 H-3 146.0 24-MAY-1 0 1-131 (CHEM) 0.313 23-AUG-1 0 MN-54 3.9 23-AUG-10 CO-58 2.7 23-AUG-10 FE-59 8.1 23-AUG-10 CO-60 3.4 23-AUG-1 0 ZN-65 4.3 23-AUG-1 0 ZR-NB-95 3.3 23-AUG-1 0 CS-134 3.6 23-AUG-1 0 CS-1 37 4.4 23-AUG-10 BA-LA-140 4.9 23-AUG-10 H-3 181.0 23-AUG-10 1-131 (CHEM) 0.287 22-NOV-1 0 MN-54 3.5 22-NOV-1 0 CO-58 4.8 22-NOV-1 0 FE-59 9.1 22-NOV-1 0 CO-60 5.2 22-NOV-1 0 ZN-65 8.3 22-NOV-1 0 ZR-NB-95 6.8 22-NOV-1 0 CS-134 5.1 22-NOV-1 0 CS-137 4.2 2010 Annual Radiological Environmental Operating Report, Wolf Creek Generating Station Page C- 33

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-NOV-10 BA-LA-140

• 6.6 22-NOV-1 0 H-3 < 144.0 22-NOV-1 0 1-131 (CHEM)

• 0.458 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 34

Exposure Pathway - Waterborne Ground Water Location F-1 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-FEB-1 0 MN-54 3.8 Duplicate 22-FEB-1 0 MN-54 2.7 22-FEB-1 0 CO-58 4.5 Duplicate 22-FEB-10 CO-58 1.9 22-FEB-10 FE-59 12.8 Duplicate 22-FEB-10 FE-59 4.6 22-FEB-10 CO-60 5.9 Duplicate 22-FEB-1 0 CO-60 2.3 22-FEB-1 0 ZN-65 17.4 Duplicate 22-FEB-10 ZN-65 5.0 22-FEB-1 0 ZR-NB-95 6.7 Duplicate 22-FEB-1 0 ZR-NB-95 2.3 22-FEB-1 0 CS-134 6.6 Duplicate 22-FEB-1 0 CS-134 1.9 22-FEB-10 CS-137 6.7 Duplicate 22-FEB-1 0 CS-1 37 3.6 22-FEB-1 0 BA-LA-140 7.1 Duplicate 22-FEB-1 0 BA-LA-140 1.8 22-FEB-1 0 H-3 152.0 Duplicate 22-FEB-1 0 H-3 152.0 22-FEB-1 0 1-131 (CHEM) 0.353 Duplicate 22-FEB-1 0 1-131 (CHEM) 0.287 24-MAY-1 0 MN-54 1.6 24-MAY-10 CO-58 1.9 24-MAY-1 0 FE-59 4.1 24-MAY-1 0 CO-60 1.8 24-MAY-1 0 ZN-65 2.9 24-MAY- 10 ZR-NB-95 2.1 24-MAY-1 0 CS-134 2.4 24-MAY-1 0 CS-1 37 3.5 24-MAY-1 0 BA-LA-140 2.9 24-MAY-1 0 H-3 146.0 24-MAY-1 0 1-131 (CHEM) 0.232 23-AUG-1 0 MN-54 1.9 23-AUG-10 CO-58 3.5 23-AUG-1 0 FE-59 4.6 23-AUG-1 0 CO-60 3.9 23-AUG-1 0 ZN-65 4.7 23-AUG-1 0 ZR-NB-95 3.0 23-AUG-1 0 CS-1 34 2.2 23-AUG-1 0 CS-1 37 2.5 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 35

Exposure Pathway - Waterborne Ground Water Location F-I Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 23-AUG-10 BA-LA-140 2.0 23-AUG-1 0 H-3 181.0 23-AUG-1 0 1-131 (CHEM) 0.252 22-NOV-1 0 MN-54 2.7 22-NOV-1 0 CO-58 2.6 22-NOV-1 0 FE-59 7.6 22-NOV-1 0 CO-60 3.8 22-NOV-10 ZN-65 4.6 22-NOV-1 0 ZR-NB-95 3.9 22-NOV-1 0 CS-1 34 2.7 22-NOV-10 CS-137 5.4 22-NOV-10 BA-LA-140 5.3 22-NOV-1 0 H-3 144.0 22-NOV-1 0 1-131 (CHEM) 0.263 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 36

Exposure Pathway - Waterborne Ground Water Location G-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-FEB-1 0 MN-54 3.4 22-FEB-1 0 CO-58 2.6 22-FEB-10 FE-59 4.7 22-FEB-1 0 CO-60 3.9 22-FEB-1 0 ZN-65 5.8 22-FEB-10 ZR-NB-95 4.7 22-FEB-1 0 CS-134 4.2 22-FEB-10 CS-137 5.3 22-FEB-10 BA-LA-140 2.2 22-FEB-1 0 H-3 152.0 22-FEB-1 0 1-131 (CHEM) 0.238 24-MAY-1 0 MN-54 4.4 24-MAY-10 CO-58 2.2 24-MAY-10 FE-59 7.9 24-MAY-1 0 CO-60 2.8 24-MAY-10 ZN-65 13.3 24-MAY-1 0 ZR-NB-95 5.1 24-MAY-1 0 CS-134 4.3 24-MAY- 10 CS-137 6.4 24-MAY-1 0 BA-LA- 140 2.4 24-MAY- 10 H-3 146.0 24-MAY-1 0 1-131 (CHEM) 0.207 23-AUG-1 0 MN-54 2.8 23-AUG-1 0 CO-58 1.6 23-AUG-10 FE-59 2.9 23-AUG-1 0 CO-60 2.7 23-AUG-1 0 ZN-65 5.2 23-AUG-1 0 ZR-NB-95 2.6 23-AUG-1 0 CS-134 2.4 23-AUG-1 0 CS-1 37 4.2 23-AUG-10 BA-LA-140 3.3 23-AUG-10 H-3 181.0 23-AUG-1 0 1-131 (CHEM) 0.226 22-NOV-1 0 MN-54 3.1 22-NOV-1 0 CO-58 2.8 22-NOV-1 0 FE-59 2.4 22-NOV-1 0 CO-60 3.6 22-NOV-1 0 ZN-65 5.6 22-NOV-1 0 ZR-NB-95 3.4 22-NOV-10 CS-134 2.8 22-NOV-10 CS-137 4.2 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 37

Exposure Pathway - Waterborne Ground Water Location G-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-NOV-1 0 BA-LA-140

• 2.8 22-NOV-1 0 H-3 < 144.0 22-NOV-1 0 1-131 (CHEM) < 0.368 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 38

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 22-FEB-1 0 MN-54 3.2 22-FEB-1 0 CO-58 3.3 22-FEB-10 FE-59 6.4 22-FEB-1 0 CO-60 3.5 22-FEB-10 ZN-65 6.7 22-FEB-10 ZR-NB-95 4.1 22-FEB-10 CS-1 34 4.1 22-FEB-1 0 CS-1 37 2.6 22-FEB-1 0 BA-LA-140 4.0 22-FEB-1 0 H-3 152.0 22-FEB-10 1-131 (CHEM) 0.273 24-MAY-1 0 MN-54 3.3 24-MAY-1 0 CO-58 3.4 24-MAY-1 0 FE-59 2.1 24-MAY-1 0 CO-60 2.9 24-MAY-1 0 ZN-65 7.1 24-MAY- 10 ZR-NB-95 3.5 24-MAY-1 0 CS-134 3.2 24-MAY- 10 CS-1 37 2.6 24-MAY- 10 BA-LA- 140 3.9 24-MAY- 10 H-3 146.0 24-MAY- 10 1-131 (CHEM) 0.218 23-AUG-10 MN-54 2.6 23-AUG-10 CO-58 3.9 23-AUG-10 FE-59 8.9 23-AUG-1 0 CO-60 4.2 23-AUG-1 0 ZN-65 10.6 23-AUG-1 0 ZR-NB-95 4.1 23-AUG-1 0 CS-134 4.1 23-AUG-1 0 CS-137 4.6 23-AUG-1 0 BA-LA- 140 4.0 23-AUG-1 0 H-3 181.0 23-AUG-10 1-131 (CHEM) 0.219 22-NOV-1 0 MN-54 5.6 22-NOV-1 0 CO-58 5.8 22-NOV-1 0 FE-59 8.8 22-NOV-1 0 CO-60 7.3 22-NOV-1 0 ZN-65 11.7 22-NOV-10 ZR-NB-95 5.6 22-NOV-10 CS-134 5.5 22-NOV-10 CS-137 6.4 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 39

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-NOV-1 0 BA-LA-140 < 9.3 22-NOV-1 0 H-3 < 144.0 22-NOV-1 0 1-131 (CHEM) < 0.447 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 40

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-FEB-10 MN-54 2.6 22-FEB-1 0 CO-58 2.0 22-FEB-1 0 FE-59 6.1 22-FEB-10 CO-60 2.6 22-FEB-1 0 ZN-65 8.6 22-FEB-10 ZR-NB-95 4.7 22-FEB-1 0 CS-1 34 3.8 22-FEB-1 0 CS-1 37 4.5 22-FEB-1 0 BA-LA-140 3.9 22-FEB-10 H-3 152.0 22-FEB-10 1-131 (CHEM) 0.228 24-MAY- 10 MN-54 3.0 24-MAY- 10 CO-58 2.9 24-MAY- 10 FE-59 3.9 24-MAY- 10 CO-60 1.2 24-MAY- 10 ZN-65 4.0 24-MAY-1 0 ZR-NB-95 2.4 24-MAY-1 0 CS-134 3.2 24-MAY-1 0 CS-1 37 2.8 24-MAY-1 0 BA-LA-140 2.7 24-MAY- 10 H-3 146.0 24-MAY-1 0 1-131 (CHEM) 0.221 23-AUG-10 MN-54 3.3 23-AUG-1 0 CO-58 3.4 23-AUG-1 0 FE-59 3.5 23-AUG-1 0 CO-60 3.5 23-AUG-1 0 ZN-65 5.6 23-AUG-10 ZR-NB-95 4.8 23-AUG-10 CS-134 2.8 23-AUG-1 0 CS-137 2.7 23-AUG-10 BA-LA-140 3.9 23-AUG-1 0 H-3 181.0 23-AUG-1 0 1-131 (CHEM) 0.226 22-NOV-1 0 MN-54 2.7 22-NOV-1 0 CO-58 3.0 22-NOV-1 0 FE-59 6.6 22-NOV-1 0 CO-60 3.1 22-NOV-1 0 ZN-65 7.5 22-NOV-1 0 ZR-NB-95 3.6 22-NOV-1 0 CS-134 3.7 22-NOV-1 0 CS-137 4.1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 41

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-NOV-1 0 BA-LA-140

• 2.9 22-NOV-1 0 H-3 < 144.0 22-NOV-10 1-131 (CHEM) < 0.37 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 42

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-FEB-1 0 MN-54 < 2.1 22-FEB-1 0 CO-58 < 1.8 22-FEB-1 0 FE-59 < 3.8 22-FEB-1 0 CO-60 < 1.2 22-FEB-10 ZN-65 < 2.7 22-FEB-10 ZR-NB-95 < 2.1 22-FEB-10 CS-134 < 2.6 22-FEB-1 0 CS-137 < 3.3 22-FEB-1 0 BA-LA- 140 < 1.7 22-FEB-1 0 H-3 < 152.0 22-FEB-1 0 1-131 (CHEM) < 0.489 24-MAY-1 0 MN-54 < 3.0 24-MAY-1 0 CO-58 < 1.8 24-MAY-1 0 FE-59 < 5.7 24-MAY-1 0 CO-60 < 1.9 24-MAY- 10 ZN-65 < 4.2 24-MAY- 10 ZR-NB-95 < 3.4 24-MAY-1 0 CS-134 < 3.5 24-MAY-1 0 CS-1 37 < 3.7 24-MAY-1 0 BA-LA-140 < 2.3 24-MAY-1 0 H-3 < 146.0 24-MAY-1 0 1-131 (CHEM) < 0.215 23-AUG-1 0 MN-54 < 2.8 23-AUG-1 0 CO-58 < 3.1 23-AUG-1 0 FE-59 < 5.5 23-AUG-1 0 CO-60 < 2.6 23-AUG-10 ZN-65 < 6.9 23-AUG-10 ZR-NB-95 < 2.9 23-AUG-1 0 CS-134 < 2.6 23-AUG-10 CS-1 37 < 3.8 23-AUG-10 BA-LA- 140 < 3.8 23-AUG-10 H-3 < 181.0 23-AUG-10 1-131 (CHEM) < 0.24 22-NOV-1 0 MN-54 < 3.8 22-NOV-1 0 CO-58 < 1.9 22-NOV-1 0 FE-59 < 7.2 22-NOV-1 0 CO-60 < 3.2 22-NOV-1 0 ZN-65 < 4.5 22-NOV-10 ZR-NB-95 < 3.4 22-NOV-10 CS-1 34 < 3.0 22-NOV-10 CS-1 37 < 4.6 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 43

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-NOV-1 0 BA-LA-140

• 6.1 22-NOV-1 0 H-3 < 144.0 22-NOV-10 1-131 (CHEM) < 0.419 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 44

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 01-FEB-10 MN-54 2.6 01-FEB-10 CO-58 1.7 01-FEB-10 FE-59 3.7 01-FEB-10 CO-60 2.4 01-FEB-10 ZN-65 4.0 01-FEB-10 ZR-NB-95 2.2 01-FEB-10 CS-134 2.5 01-FEB-10 CS-1 37 3.1 01-FEB-10 BA-LA-140 2.0 01-FEB-10 GROSS BETA 1.986+/- 0.625 01-FEB-10 1-131 (CHEM) 0.288 01-MAR-10 MN-54 4.3 01-MAR-10 CO-58 2.4 01-MAR-10 FE-59 5.1 01-MAR-10 CO-60 1.7 01-MAR-10 ZN-65 3.9 01-MAR-10 ZR-NB-95 3.0 01-MAR-10 CS-134 3.0 01-MAR-10 CS-1 37 3.0 01-MAR-10 BA-LA-140 3.3 01-MAR-10 GROSS BETA 1.339+/- 0.558 01-MAR-10 1-131 (CHEM) 0.316 05-APR-1 0 MN-54 2.7 05-APR-1 0 CO-58 2.6 05-APR-1 0 FE-59 4.5 05-APR-10 CO-60 3.3 05-APR-10 ZN-65 4.7 05-APR-1 0 ZR-NB-95 2.8 05-APR-10 CS-134 3.1 05-APR-10 CS-1 37 2.7 05-APR-10 BA-LA-140 2.5 05-APR-1 0 GROSS BETA 3.239 +/- 1.109 05-APR-1 0 1-131 (CHEM) 0.282 03-MAY- 10 MN-54 2.3 03-MAY-1 0 CO-58 2.2 03-MAY-1 0 FE-59 4.2 03-MAY-1 0 CO-60 2.3 03-MAY-1 0 ZN-65 1.7 03-MAY-1 0 ZR-NB-95 3.4 03-MAY-1 0 CS-134 2.7 2010Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 45

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 03-MAY-1 0 CS-137 < 4.5 03-MAY-1 0 BA-LA-140 < 2.1 03-MAY-1 0 GROSS BETA 3.954+/- 1.038 03-MAY-1 0 1-131 (CHEM) < 0.236 02-JUN-10 MN-54 < 3.3 02-JUN-10 CO-58 < 2.1 02-JUN-10 FE-59 < 6.9 02-JUN-10 CO-60 < 3.1 02-JUN-10 ZN-65 < 4.9 02-JUN-1 0 ZR-NB-95 < 3.2 02-JUN-10 CS-134 < 3.0 02-JUN-10 CS-1 37 < 2.5 02-JUN-10 BA-LA- 140 < 1.5 02-JUN-10 GROSS BETA 3.293+/- 1.11 02-JUN-10 1-131 (CHEM) < 0.311 06-JUL-10 MN-54 < 3.2 06-JUL-10 CO-58 < 2.0 06-JUL-10 FE-59 < 4.5 06-JUL-10 CO-60 < 2.4 06-JUL-10 ZN-65 < 3.2 06-JUL-10 ZR-NB-95 < 2.6 06-JUL-10 CS-134 < 2.4 06-JUL-10 CS-137 < 4.1 06-JUL-10 BA-LA-140 < 3.1 06-JUL-10 GROSS BETA 2.644+/- 0.492 06-JUL-10 1-131 (CHEM) < 0.235 02-AUG-1 0 MN-54 < 2.5 02-AUG-1 0 CO-58 < 4.1 02-AUG-1 0 FE-59 < 4.1 02-AUG-1 0 CO-60 4.6 02-AUG-1 0 ZN-65 2.9 02-AUG-1 0 ZR-NB-95 4.0 02-AUG-1 0 CS-134 1.6 02-AUG-10 CS-1 37 4.1 02-AUG-10 BA-LA-140 1.8 02-AUG-1 0 GROSS BETA 2.428+/- 0.634 02-AUG-1 0 1-131 (CHEM) 0.324 07-SEP-10 MN-54 1.8 07-SEP-10 CO-58 < 1.9 07-SEP-10 FE-59 < 3.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 46

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 07-SEP-10 CO-60 < 2.7 07-SEP-10 ZN-65 < 2.5 07-SEP-10 ZR-NB-95 < 2.2 07-SEP-1 0 CS-134 < 1.5 07-SEP-10 CS-1 37 < 1.6 07-SEP-10 BA-LA-140 < 1.1 07-SEP-10 GROSS BETA 5.078+/- 1.147 07-SEP-10 1-131 (CHEM) < 0.279 06-OCT-1 0 MN-54 < 2.3 06-OCT-1 0 GRAB MN-54 < 3.3 06-OCT-10 CO-58 < 2.9 06-OCT-1 0 GRAB CO-58 < 2.2 06-OCT-1 0 FE-59 < 5.6 06-OCT-1 0 GRAB FE-59 < 2.7 06-OCT-1 0 CO-60 < 3.9 06-OCT-1 0 GRAB CO-60 < 2.9 06-OCT-1 0 ZN-65 < 2.8 06-OCT-1 0 GRAB ZN-65 < 4.4 06-OCT-1 0 ZR-NB-95 < 2.8 06-OCT-1 0 GRAB ZR-NB-95 < 3.2 06-OCT-1 0 CS-134 < 3.9 06-OCT-1 0 GRAB CS-134 < 3.4 06-OCT-1 0 CS-1 37 < 3.6 06-OCT- 10 GRAB CS-1 37 < 2.9 06-OCT-1 0 BA-LA- 140 < 2.8 06-OCT-1 0 GRAB BA-LA-140 < 1.4 06-OCT-1 0 GROSS BETA 3.254+/- 0.691 06-OCT-1 0 GRAB GROSS BETA 2.902+/- 0.666 06-OCT-1 0 1-131 (CHEM) < 0.32 06-OCT-1 0 GRAB 1-131 (CHEM) < 0.263 01-NOV-10 MN-54 < 3.6 01-NOV-10 CO-58 < 2.6 01-NOV-10 FE-59 < 5.5 01-NOV-10 CO-60 < 3.2 01-NOV-10 ZN-65 < 8.8 01-NOV-10 ZR-NB-95 < 2.8 01-NOV-10 CS-134 < 4.1 01-NOV-10 CS-1 37 < 3.9 01-NOV-10 BA-LA-140 < 2.8 01-NOV-10 GROSS BETA 2.811+/- 0.664 2010Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 47

Exposure Pathway - Waterborne Drinking Water Location BW-1 5 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 01-NOV-10 1-131 (CHEM) 0.238 06-DEC-10 MN-54 4.1 06-DEC-1 0 CO-58 3.0 06-DEC-1 0 FE-59 6.7 06-DEC-1 0 CO-60 4.4 06-DEC-10 ZN-65 4.3 06-DEC-10 ZR-NB-95 3.0 06-DEC-1 0 CS-134 4.2 06-DEC-1 0 CS-1 37 3.8 06-DEC-1 0 BA-LA-140 3.3 06-DEC-10 GROSS BETA 2.835+/- 0.652 06-DEC-1 0 1-131 (CHEM) 0.168 03-JAN-1 1 MN-54 2.6 03-JAN-1i1 CO-58 2.0 03-JAN-1i1 FE-59 < 4.5 03-JAN-1i1 CO-60 < 1.4 03-JAN-1i1 ZN-65 2.6 03-JAN-1i1 ZR-NB-95 2.4 03-JAN-1i1 CS-134 2.6 03-JAN-1i1 CS-1 37 3.6 03-JAN-1i1 BA-LA-140 2.5 03-JAN-i 1 GROSS BETA 2.416 +/- 0.652 03-JAN-i 1 1-131 (CHEM) 0.285 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 48

Exposure Pathway - Waterborne Drinking Water Location IO-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 01-FEB-10 MN-54 3.0 01-FEB-10 CO-58 2.5 01-FEB-10 FE-59 4.2 01-FEB-10 CO-60 2.9 01-FEB-10 ZN-65 5.7 01-FEB-10 ZR-NB-95 4.2 01-FEB-10 CS-1 34 3.4 01-FEB-10 CS-137 4.4 01-FEB-10 BA-LA-140 2.8 01-FEB-10 GROSS BETA 2.402+/- 0.688 01-FEB-10 1-131 (CHEM) 0.278 01-MAR-10 MN-54 3.8 01-MAR-10 CO-58 1.4 01-MAR-10 FE-59 6.3 01-MAR-10 CO-60 2.2 01-MAR-10 ZN-65 5.3 01-MAR-10 ZR-NB-95 4.3 01-MAR-10 CS-1 34 4.3 01-MAR- 10 CS-137 3.8 01-MAR- 10 BA-LA-140 3.5 01-MAR-10 GROSS BETA 1.360+/- 0.613 01-MAR-10 1-131 (CHEM) 0.203 05-APR-1 0 MN-54 2.5 05-APR-10 CO-58 2.8 05-APR-10 FE-59 7.9 05-APR-1 0 CO-60 1.4 05-APR-1 0 ZN-65 4.4 05-APR-1 0 ZR-NB-95 3.1 05-APR-1 0 CS-1 34 3.0 05-APR-1 0 CS-1 37 3.1 05-APR-1 0 BA-LA- 140 3.9 05-APR-10 GROSS BETA 3.311 +/- 1.046 05-APR-1 0 1-131 (CHEM) 0.263 03-MAY- 10 MN-54 2.7 03-MAY- 10 CO-58 3.5 03-MAY- 10 FE-59 3.7 03-MAY- 10 CO-60 3.1 03-MAY-1 0 ZN-65 2.9 03-MAY-1 0 ZR-NB-95 3.4 03-MAY-1 0 CS-134 2.6 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 49

Exposure Pathway - Waterborne Drinking Water Location IO-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 03-MAY-1 0 CS-137 3.6 03-MAY- 10 BA-LA-140 3.2 03-MAY-1 0 GROSS BETA 2.640+/- 1.089 03-MAY-1 0 1-131 (CHEM) 0.389 02-JUN-10 MN-54 3.1 02-JUN-10 CO-58 3.9 02-JUN-10 FE-59 5.0 02-JUN-10 CO-60 1.9 02-JUN-10 ZN-65 7.8 02-JUN-10 ZR-NB-95 3.8 02-JUN-10 CS-134 3.9 02-JUN-10 CS-137 3.8 02-JUN-10 BA-LA- 140 3.8 02-JUN-10 GROSS BETA 3.384 +/- 1.03 02-JUN-10 1-131 (CHEM) 0.293 06-JUL-10 MN-54 4.2 06-JUL-10 CO-58 4.7 06-JUL-10 FE-59 7.2 06-JUL-10 CO-60 1.1 06-JUL-10 ZN-65 7.0 06-JUL-10 ZR-NB-95 4.0 06-JUL-10 CS-134 3.3 06-JUL-10 CS-137 2.9 06-JUL-10 BA-LA-140 5.4 06-JUL-10 GROSS BETA 2.774+/- 0.519 06-JUL-10 1-131 (CHEM) 0.22 02-AUG-10 MN-54 3.6 02-AUG-1 0 CO-58 1.8 02-AUG-1 0 FE-59 6.0 02-AUG-1 0 CO-60 4.0 02-AUG-1 0 ZN-65 3.5 02-AUG-1 0 ZR-NB-95 3.9 02-AUG-1 0 CS-134 3.6 02-AUG-10 CS-1 37 4.1 02-AUG-1 0 BA-LA-140 2.2 02-AUG-1 0 GROSS BETA 2.211 +/- 0.651 02-AUG-1 0 1-131 (CHEM) 0.343 07-SEP-10 MN-54 3.4 07-SEP-1 0 CO-58 1.8 07-SEP-1 0 FE-59 6.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 50

Exposure Pathway - Waterborne Drinking Water Location 10-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 07-SEP-10 CO-60 < 3.2 07-SEP-10 ZN-65 < 2.6 07-SEP-10 ZR-NB-95 < 4.4 07-SEP-10 CS-134 < 4.1 07-SEP-10 CS-1 37 < 2.7 07-SEP-10 BA-LA-140 < 3.1 07-SEP-1 0 GROSS BETA 3.944+/- 1.002 07-SEP-1 0 1-131 (CHEM) < 0.186 06-OCT-1 0 MN-54 < 2.8 06-OCT-1 0 CO-58 < 2.7 06-OCT-1 0 FE-59 < 1.8 06-OCT-1 0 CO-60 < 3.2 06-OCT-1 0 ZN-65 < 5.6 06-OCT-1 0 ZR-NB-95 < 2.9 06-OCT-1 0 CS-134 < 3.0 06-OCT- 10 CS-137 < 2.0 06-OCT-1 0 BA-LA-140 4.1 06-OCT-1 0 GROSS BETA 2.546 +/- 0.658 06-OCT-1 0 1-131 (CHEM) 0.369 01-NOV-10 MN-54 2.7 01-NOV-10 CO-58 2.5 01-NOV-10 FE-59 4.1 01-NOV-10 CO-60 1.6 01-NOV-10 ZN-65 3.0 01-NOV-10 ZR-NB-95 3.0 01-NOV-10 CS-134 2.9 01-NOV-10 CS-137 2.1 01-NOV-10 BA-LA-140 3.2 01-NOV-10 GROSS BETA 2.594+/- 0.717 01-NOV-10 1-131 (CHEM) 0.321 06-DEC- 10 MN-54 2.0 06-DEC-10 CO-58 2.9 06-DEC-1 0 FE-59 3.9 06-DEC-1 0 CO-60 4.2 06-DEC-1 0 ZN-65 2.9 06-DEC-1 0 ZR-NB-95 3.3 06-DEC-1 0 CS-134 2.9 06-DEC-10 CS-137 3.9 06-DEC-1 0 BA-LA-140 2.2 06-DEC-10 GROSS BETA 3.392 +/- 0.737 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 51

Exposure Pathway - Waterborne Drinking Water Location 1O-DW Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 06-DEC-1 0 1-131 (CHEM) 0.369 03-JAN-11 MN-54 2.4 03-JAN-i 1 CO-58 1.3 03-JAN-i 1 FE-59 4.6 03-JAN-11 CO-60 2.2 03-JAN-i 1 ZN-65 4.4 03-JAN-i 1 ZR-NB-95 3.6 03-JAN-I 1 CS-134 3.5 03-JAN-i 1 CS-1 37 3.4 03-JAN-1 1 BA-LA- 140 1.7 03-JAN-i 1 GROSS BETA 2.878+/- 0.716 03-JAN-1 1 1-131 (CHEM) 0.291 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 52

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location BW-15 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 05-APR-1 0 H-3 < 144 06-JUL-10 H-3 < 163 06-JUL-10 H-3 < 163 Duplicate 06-OCT-1 0 H-3 < 161 03-JAN-1i1 H-3 < 145 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 53

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location 10-DW Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 05-APR-1 0 H-3 < 144 06-JUL-10 H-3 < 163 06-OCT-1 0 H-3 < 161 03-JAN-i 1 H-3 < 145 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 54

Exposure Pathway - Waterborne Shoreline Sediment Location DC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCiIKg Dry) 25-MAY-1 0 K-40 9,012.1 +/- 1,160.0 25-MAY-10 MN-54 < 53.8 25-MAY-1 0 CO-58 < 65.9 25-MAY-1 0 FE-59 < 110.9 25-MAY-1 0 CO-60 < 55.0 25-MAY-1 0 ZN-65 < 105.6 25-MAY-1 0 CS-134 < 68.2 25-MAY- 10 CS-137 184.2 +/- 98.8 08-NOV-10 K-40 11,494.0 +/- 703.2 08-NOV-1 0 MN-54 < 28.6 08-NOV-10 CO-58 < 25.8 08-NOV-10 FE-59 < 53.6 08-NOV-10 CO-60 < 19.8 08-NOV-1 0 ZN-65 < 47.1 08-NOV-1 0 CS-134 < 20.9 08-NOV-10 CS-1 37 < 20.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 55

Exposure Pathway - Waterborne Shoreline Sediment Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-JUN-10 K-40 9,892.2 +/- 755.6 02-JUN-10 MN-54 25.1 02-JUN-10 CO-58 16.1 02-JUN-10 FE-59 35.1 02-JUN-10 CO-60 8.4 02-JUN-10 ZN-65 35.0 02-JUN-10 CS-134 19.9 02-JUN-10 CS-137 101.9 +/- 29.7 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 56

Exposure Pathway - Waterborne Shoreline Sediment Location JRR Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 25-MAY-1 0 K-40 9,530.2 +/- 757.3 25-MAY-1 0 MN-54 < 25.3 25-MAY- 10 CO-58 < 21.4 25-MAY- 10 FE-59 < 21.4 25-MAY- 10 CO-60 < 10.7 25-MAY- 10 ZN-65 < 38.2 25-MAY-1 0 CS-134 < 24.7 25-MAY-1 0 CS-1 37 116.8 +/- 31.3 08-NOV-10 K-40 12,370.0 +/- 729.9 08-NOV-1 0 MN-54

• 25.4 08-NOV-1 0 CO-58

• 12.6 08-NOV-1 0 FE-59

• 55.4 08-NOV-1 0 CO-60

• 11.0 08-NOV-1 0 ZN-65

• 43.9 08-NOV-1 0 CS-134

• 13.7 08-NOV-1 0 CS-1 37

• 21.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 57

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCilKg Wet) 18-MAY- 10 COMMON CARP K-40 2,875.3+/- 528.2 18-MAY-1 0 COMMON CARP MN-54 18.0 18-MAY-1 0 COMMON CARP CO-58 18.0 18-MAY-1 0 COMMON CARP FE-59 33.7 18-MAY-1 0 COMMON CARP CO-60 16.4 18-MAY- 10 COMMON CARP ZN-65 41.8 18-MAY-1 0 COMMON CARP 1-131 53.0 18-MAY-1 0 COMMON CARP CS-134 20.0 18-MAY-10 COMMON CARP CS-137 18.6 18-MAY-1 0 COMMON CARP H-3 7,305.0 +1- 227.0 18-MAY-1 0 SMALLMOUTH BASS K-40 3,629.7 +1- 554.4 Duplicate 18-MAY-1 0 SMALLMOUTH BASS K-40 3,212.4+1- 3,943.0 18-MAY-10 SMALLMOUTH BASS MN-54 20.2 Duplicate 18-MAY-1 0 SMALLMOUTH BASS MN-54 17.0 18-MAY-1 0 SMALLMOUTH BASS CO-58 16.0 Duplicate 18-MAY-1 0 SMALLMOUTH BASS CO-58 6.4 18-MAY-1 0 SMALLMOUTH BASS FE-59 22.1 Duplicate 18-MAY-1 0 SMALLMOUTH BASS FE-59 25.7 18-MAY-10 SMALLMOUTH BASS CO-60 15.9 Duplicate 18-MAY- 10 SMALLMOUTH BASS CO-60 11.0 18-MAY-1 0 SMALLMOUTH BASS ZN-65 41.7 Duplicate 18-MAY-1 0 SMALLMOUTH BASS ZN-65 23.7 18-MAY-1 0 SMALLMOUTH BASS 1-131 24.0 18-MAY-1 0 SMALLMOUTH BASS CS-134 21.0 Duplicate 18-MAY-1 0 SMALLMOUTH BASS CS-134 9.2 18-MAY-10 SMALLMOUTH BASS CS-137 20.0 Duplicate 18-MAY-1 0 SMALLMOUTH BASS CS-1 37 11.0 18-MAY-10 SMALLMOUTH BASS H-3 8,184.0 +1- 224.0 Duplicate 18-MAY-1 0 SMALLMOUTH BASS H-3 8,358.0 +/- 247.0 18-MAY-1 0 WHITE BASS K-40 3,181.3+/- 388.2 18-MAY-1 0 WHITE BASS MN-54 12.6 18-MAY-1 0 WHITE BASS CO-58 8.9 18-MAY-1 0 WHITE BASS FE-59 23.8 18-MAY-1 0 WHITE BASS CO-60 11.0 18-MAY-10 WHITE BASS ZN-65 13.7 18-MAY-10 WHITE BASS 1-131 21.0 18-MAY- 10 WHITE BASS CS-134 5.4 18-MAY-1 0 WHITE BASS CS-137 10.4 18-MAY- 10 WHITE BASS H-3 7,474.0 +1- 233.0 25-MAY-1 0 CHANNEL CATFISH K-40 3,267.2 +1- 361.8 Duplicate 25-MAY-1 0 CHANNEL CATFISH K-40 3,170.9 +1- 533.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 58

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCilKg Wet) 25-MAY-1 0 CHANNEL CATFISH MN-54 14.0 Duplicate 25-MAY-1 0 CHANNEL CATFISH MN-54 22.1 25-MAY- 10 CHANNEL CATFISH CO-58 12.1 Duplicate 25-MAY- 10 CHANNEL CATFISH CO-58 18.0 25-MAY- 10 CHANNEL CATFISH FE-59 35.0 Duplicate 25-MAY- 10 CHANNEL CATFISH FE-59 39.3 25-MAY-1 0 CHANNEL CATFISH CO-60 11.1 Duplicate 25-MAY-1 0 CHANNEL CATFISH CO-60 15.4 25-MAY-1 0 CHANNEL CATFISH ZN-65 46.0 Duplicate 25-MAY-1 0 CHANNEL CATFISH ZN-65 37.4 25-MAY- 10 CHANNEL CATFISH I-131 25.0 25-MAY- 10 CHANNEL CATFISH CS-1 34 8.8 Duplicate 25-MAY-1 0 CHANNEL CATFISH CS-1 34 18.4 25-MAY-1 0 CHANNEL CATFISH CS-1 37 15.1 Duplicate 25-MAY-1 0 CHANNEL CATFISH CS-1 37 23.9 25-MAY-1 0 CHANNEL CATFISH H-3 7,302.0 +1- 230.0 Duplicate 25-MAY-1 0 CHANNEL CATFISH H-3 7,232.0 +1- 229.0 25-MAY- 10 FRESHWATER DRUM K-40 3,291.0+1- 514.2 25-MAY-1 0 FRESHWATER DRUM MN-54 18.9 25-MAY-1 0 FRESHWATER DRUM CO-58 13.7 25-MAY-1 0 FRESHWATER DRUM FE-59 27.9 25-MAY- 10 FRESHWATER DRUM CO-60 17.1 25-MAY-1 0 FRESHWATER DRUM ZN-65 51.0 25-MAY-1 0 FRESHWATER DRUM 1-131 39.0 25-MAY-1 0 FRESHWATER DRUM CS-1 34 18.4 25-MAY-1 0 FRESHWATER DRUM CS-1 37 24.3 25-MAY- 10 FRESHWATER DRUM H-3 7,552.0 +1- 233.0 25-MAY-1 0 SMALLMOUTH BUFFALO K-40 3,547.9 +/- 542.9 25-MAY-1 0 SMALLMOUTH BUFFALO MN-54 23.3 25-MAY-1 0 SMALLMOUTH BUFFALO CO-58 21.7 25-MAY-1 0 SMALLMOUTH BUFFALO FE-59 42.5 25-MAY- 10 SMALLMOUTH BUFFALO CO-60 19.3 25-MAY-1 0 SMALLMOUTH BUFFALO ZN-65 18.5 25-MAY- 10 SMALLMOUTH BUFFALO 1-131 54.0 25-MAY-1 0 SMALLMOUTH BUFFALO CS-134 12.4 25-MAY- 10 SMALLMOUTH BUFFALO CS-137 10.6 25-MAY- 10 SMALLMOUTH BUFFALO H-3 6,096.0 +1- 199.0 19-OCT-10 BLUE CATFISH K-40 2,856.9+I- 377.4 19-OCT-1 0 BLUE CATFISH MN-54 7.9 19-OCT-1 0 BLUE CATFISH CO-58 11.2 19-OCT-1 0 BLUE CATFISH FE-59 22.5 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 59

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCilKg Wet) 19-OCT-1 0 BLUE CATFISH CO-60 11.9 19-OCT-1 0 BLUE CATFISH ZN-65 19.9 19-OCT-1 0 BLUE CATFISH 1-131 31.0 19-OCT-1 0 BLUE CATFISH CS-1 34 10.6 19-OCT-1 0 BLUE CATFISH CS-1 37 8.6 19-OCT-1 0 BLUE CATFISH H-3 8,174.0 +/- 249.0 19-OCT-1 0 CHANNEL CATFISH K-40 3,182.6 +/- 394.9 19-OCT-1 0 CHANNEL CATFISH MN-54 8.6 19-OCT-1 0 CHANNEL CATFISH CO-58 14.1 19-OCT-1 0 CHANNEL CATFISH FE-59 33.9 19-OCT-1 0 CHANNEL CATFISH CO-60 10.6 19-OCT-1 0 CHANNEL CATFISH ZN-65 18.9 19-OCT-1 0 CHANNEL CATFISH 1-131 53.0 19-OCT-1 0 CHANNEL CATFISH CS-134 10.2 19-OCT-1 0 CHANNEL CATFISH CS-137 7.3 19-OCT-1 0 CHANNEL CATFISH H-3 8,051.0 +/- 250.0 19-OCT-1 0 COMMON CARP K-40 2,867.3 +/- 358.8 19-OCT-1 0 COMMON CARP MN-54 13.3 19-OCT-10 COMMON CARP CO-58 9.4 19-OCT-10 COMMON CARP FE-59 27.3 19-OCT-1 0 COMMON CARP CO-60 10.8 19-OCT-1 0 COMMON CARP ZN-65 22.9 19-OCT-1 0 COMMON CARP 1-131 40.0 19-OCT-1 0 COMMON CARP CS-1 34 12.3 19-OCT-1 0 COMMON CARP CS-1 37 13.2 19-OCT-1 0 COMMON CARP H-3 7,335.0 +/- 239.0 19-OCT-10 FLATHEAD CATFISH K-40 3,732.7 +1- 452.6 19-OCT-10 FLATHEAD CATFISH MN-54 12.2 19-OCT-1 0 FLATHEAD CATFISH CO-58 14.3 19-OCT-1 0 FLATHEAD CATFISH FE-59 22.1 19-OCT-1 0 FLATHEAD CATFISH CO-60 12.7 19-OCT-10 FLATHEAD CATFISH ZN-65 13.5 19-OCT-10 FLATHEAD CATFISH 1-131 43.0 19-OCT-10 FLATHEAD CATFISH CS-134 12.5 19-OCT-1 0 FLATHEAD CATFISH CS-137 9.1 19-OCT-1 0 FLATHEAD CATFISH H-3 7,827.0 +1- 242.0 19-OCT-10 SMALLMOUTH BUFFALO K-40 2,556.6 +/- 530.3 Duplicate 19-OCT-1 0 SMALLMOUTH BUFFALO K-40 2,807.1 +1- 399.6 19-OCT-1 0 SMALLMOUTH BUFFALO MN-54 15.5 Duplicate 19-OCT-1 0 SMALLMOUTH BUFFALO MN-54 8.1 19-OCT-1 0 SMALLMOUTH BUFFALO CO-58 21.4 Duplicate 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 60

Exposure Pathway - Ingestion Fish Location CCL Collection Sample luclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 19-OCT-1 0 SMALLMOUTH BUFFALO CO-58 12.7 19-OCT-1 0 SMALLMOUTH BUFFALO FE-59 35.0 Duplicate 19-OCT-10 SMALLMOUTH BUFFALO FE-59 25.2 19-OCT-1 0 SMALLMOUTH BUFFALO CO-60 23.2 Duplicate 19-OCT-1 0 SMALLMOUTH BUFFALO CO-60 11.5 19-OCT-1 0 SMALLMOUTH BUFFALO ZN-65 32.6 Duplicate 19-OCT-1 0 SMALLMOUTH BUFFALO ZN-65 15.0 19-OCT-1 0 SMALLMOUTH BUFFALO 1-131 45.0 19-OCT-1 0 SMALLMOUTH BUFFALO CS-1 34 21.5 Duplicate 19-OCT-10 SMALLMOUTH BUFFALO CS-134 9.4 19-OCT-10 SMALLMOUTH BUFFALO CS-1 37 19.0 Duplicate 19-OCT-1 0 SMALLMOUTH BUFFALO CS-1 37 9.3 19-OCT-1 0 SMALLMOUTH BUFFALO H-3 7,491.0+/- 231.0 Duplicate 19-OCT-1 0 SMALLMOUTH BUFFALO H-3 7,644.0 +1- 233.0 19-OCT-1 0 WALLEYE K-40 3,590.6 +1- 388.5 19-OCT-10 WALLEYE MN-54 11.9 19-OCT-10 WALLEYE CO-58 8.7 19-OCT-1 0 WALLEYE FE-59 19.7 19-OCT-1 0 WALLEYE CO-60 12.1 19-OCT-1 0 WALLEYE ZN-65 9.1 19-OCT-1 0 WALLEYE 1-131 32.0 19-OCT-1 0 WALLEYE CS-1 34 14.1 19-OCT-1 0 WALLEYE CS-1 37 12.9 19-OCT-1 0 WALLEYE H-3 7,574.0 +1- 240.0 19-OCT-10 WHITE BASS K-40 3,442.4 +/- 434.4 19-OCT-10 WHITE BASS MN-54 14.7 19-OCT-1 0 WHITE BASS CO-58 9.6 19-OCT-1 0 WHITE BASS FE-59 28.4 19-OCT-1 0 WHITE BASS CO-60 13.7 19-OCT-1 0 WHITE BASS ZN-65 13.9 19-OCT-1 0 WHITE BASS 1-131 53.0 19-OCT-1 0 WHITE BASS CS-134 5.9 19-OCT-1 0 WHITE BASS CS-1 37 9.8 19-OCT-10 WHITE BASS H-3 6,586.0 +/- 222.0 19-OCT-10 WHITE CRAPPIE K-40 2,923.9 +/- 405.9 19-OCT-10 WHITE CRAPPIE MN-54 6.9 19-OCT-1 0 WHITE CRAPPIE CO-58 10.6 19-OCT-1 0 WHITE CRAPPIE FE-59 26.5 19-OCT-1 0 WHITE CRAPPIE CO-60 11.2 19-OCT-1 0 WHITE CRAPPIE ZN-65 16.9 19-OCT-1 0 WHITE CRAPPIE 1-131 33.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 61

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 19-OCT-1 0 WHITE CRAPPIE CS-134 9.1 19-OCT-10 WHITE CRAPPIE CS-1 37 10.5 19-OCT-10 WHITE CRAPPIE H-3 6,962.0 +/- 233.0 19-OCT-1 0 WIPER K-40 3,354.6 +/- 407.0 19-OCT-1 0 WIPER MN-54 14.7 19-OCT-1 0 WIPER CO-58 12.0 19-OCT-1 0 WIPER FE-59 21.5 19-OCT-10 WIPER CO-60 11.6 19-OCT-1 0 WIPER ZN-65 9.0 19-OCT-1 0 WIPER 1-131 43.0 19-OCT-1 0 WIPER CS-134 6.0 19-OCT-1 0 WIPER CS-137 15.0 19-OCT-1 0 WIPER H-3 8,046.0 +/- 246.0

• 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 62

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 25-MAY- 10 CHANNEL CATFISH K-40 3,665.6 +/- 415.3 25-MAY-1 0 CHANNEL CATFISH MN-54 13.5 25-MAY-1 0 CHANNEL CATFISH CO-58 8.6 25-MAY-1 0 CHANNEL CATFISH FE-59 23.6 25-MAY-1 0 CHANNEL CATFISH CO-60 10.0 25-MAY-1 0 CHANNEL CATFISH ZN-65 29.6 25-MAY-1 0 CHANNEL CATFISH 1-131 40.0 25-MAY-1 0 CHANNEL CATFISH CS-134 17.1 25-MAY-1 0 CHANNEL CATFISH CS-1 37 15.5 25-MAY- 10 CHANNEL CATFISH H-3 119.0 25-MAY-1 0 LARGEMOUTH BASS K-40 3,314.0 +/- 610.6 25-MAY-1 0 LARGEMOUTH BASS MN-54 24.1 25-MAY- 10 LARGEMOUTH BASS CO-58 20.0 25-MAY- 10 LARGEMOUTH BASS FE-59 37.7 25-MAY-1 0 LARGEMOUTH BASS CO-60 25.2 25-MAY-1 0 LARGEMOUTH BASS ZN-65 47.2 25-MAY-1 0 LARGEMOUTH BASS 1-131 63.0 25-MAY-1 0 LARGEMOUTH BASS CS-134 17.9 25-MAY-1 0 LARGEMOUTH BASS CS-1 37 18.7 25-MAY-1 0 LARGEMOUTH BASS H-3 132.0 25-MAY-1 0 SMALLMOUTH BUFFALO K-40 3,161.9+/- 506.4 25-MAY- 10 SMALLMOUTH BUFFALO MN-54 21.4 25-MAY- 10 SMALLMOUTH BUFFALO CO-58 23.0 25-MAY-1 0 SMALLMOUTH BUFFALO FE-59 29.0 25-MAY-1 0 SMALLMOUTH BUFFALO CO-60 15.1 25-MAY-1 0 SMALLMOUTH BUFFALO ZN-65 50.0 25-MAY-1 0 SMALLMOUTH BUFFALO 1-131 72.0 25-MAY-1 0 SMALLMOUTH BUFFALO CS-134 10.2 25-MAY-1 0 SMALLMOUTH BUFFALO CS-1 37 18.2 25-MAY-1 0 SMALLMOUTH BUFFALO H-3 116.0 25-MAY-1 0 WHITE CRAPPIE K-40 2,673.9 +/- 438.9 25-MAY- 10 WHITE CRAPPIE MN-54 16.0 25-MAY- 10 WHITE CRAPPIE CO-58 10.0 25-MAY- 10 WHITE CRAPPIE FE-59 22.6 25-MAY-1 0 WHITE CRAPPIE CO-60 17.8 25-MAY-1 0 WHITE CRAPPIE ZN-65 45.0 25-MAY-1 0 WHITE CRAPPIE 1-131 34.0 25-MAY-1 0 WHITE CRAPPIE CS-134 16.8 25-MAY-1 0 WHITE CRAPPIE CS-137 16.9 25-MAY-1 0 WHITE CRAPPIE H-3 123.0 08-NOV-1 0 CHANNEL CATFISH K-40 3,725.9 +/- 519.4 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 63

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 08-NOV-10 CHANNEL CATFISH MN-54 9.5 08-NOV-1 0 CHANNEL CATFISH CO-58 20.6 08-NOV-1 0 CHANNEL CATFISH FE-59 47.7 08-NOV-1 0 CHANNEL CATFISH CO-60 16.5 08-NOV-1 0 CHANNEL CATFISH ZN-65 15.9 08-NOV-1 0 CHANNEL CATFISH 1-131 107.0 08-NOV-1 0 CHANNEL CATFISH CS-134 14.3 08-NOV-1 0 CHANNEL CATFISH CS-137 18.7 08-NOV-1 0 CHANNEL CATFISH H-3 108.0 08-NOV- 10 COMMON CARP K-40 3,358.6 +/- 429.4 08-NOV-1 0 COMMON CARP MN-54 11.6 08-NOV-1 0 COMMON CARP CO-58 15.0 08-NOV-1 0 COMMON CARP FE-59 24.4 08-NOV-1 0 COMMON CARP CO-60 16.9 08-NOV-1 0 COMMON CARP ZN-65 30.3 08-NOV-1 0 COMMON CARP 1-131 69.0 08-NOV-1 0 COMMON CARP CS-1 34 12.0 08-NOV-1 0 COMMON CARP CS-1 37 15.6 08-NOV-1 0 COMMON CARP H-3 109.0 08-NOV-1 0 SMALLMOUTH BUFFALO K-40 3,058.0 +/- 427.2 08-NOV-1 0 SMALLMOUTH BUFFALO MN-54 15.2 08-NOV-1 0 SMALLMOUTH BUFFALO CO-58 15.8 08-NOV-1 0 SMALLMOUTH BUFFALO FE-59 31.7 08-NOV-1 0 SMALLMOUTH BUFFALO CO-60 15.5 08-NOV-1 0 SMALLMOUTH BUFFALO ZN-65 29.3 08-NOV-1 0 SMALLMOUTH BUFFALO 1-131 109.0 08-NOV-1 0 SMALLMOUTH BUFFALO CS-134 7.6 08-NOV-1 0 SMALLMOUTH BUFFALO CS-137 13.6 08-NOV-1 0 SMALLMOUTH BUFFALO H-3 100.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 64

Exposure Pathway - Ingestion FoodlGarden Location D-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 26-APR-1 0 HORSERADISH LEAVES BE-7 473.9 +/- 166.9 26-APR-10 HORSERADISH LEAVES K-40 3,636.3 +/- 338.9 26-APR-1 0 HORSERADISH LEAVES MN-54 < 11.9 26-APR-1 0 HORSERADISH LEAVES CO-58 < 6.5 26-APR-1 0 HORSERADISH LEAVES FE-59 < 28.0 26-APR-1 0 HORSERADISH LEAVES CO-60 < 10.8 26-APR-10 HORSERADISH LEAVES ZN-65 < 9.4 26-APR-1 0 HORSERADISH LEAVES ZR-NB-95 < 6.7 26-APR-1 0 HORSERADISH LEAVES 1-131 < 12.2 26-APR-1 0 HORSERADISH LEAVES CS-1 34 < 6.0 26-APR-10 HORSERADISH LEAVES CS-1 37 < 10.1 17-MAY-1 0 HORSERADISH LEAVES BE-7 403.8 +/- 147.0 17-MAY-1 0 HORSERADISH LEAVES K-40 4,403.3 +/- 436.8 17-MAY-1 0 HORSERADISH LEAVES MN-54 < 12.9 17-MAY-1 0 HORSERADISH LEAVES CO-58 < 10.4 17-MAY-10 HORSERADISH LEAVES FE-59 < 37.7 17-MAY-1 0 HORSERADISH LEAVES CO-60 < 7.3 17-MAY-1 0 HORSERADISH LEAVES ZN-65 < 20.0 17-MAY-1 0 HORSERADISH LEAVES ZR-NB-95 < 15.1 17-MAY-1 0 HORSERADISH LEAVES 1-131 < 16.5 17-MAY-1 0 HORSERADISH LEAVES CS-134 < 9.7 17-MAY-10 HORSERADISH LEAVES CS-1 37 < 11.5 21-JUN-10 HORSERADISH LEAVES BE-7 904.2 +/- 167.5 21-JUN-10 HORSERADISH LEAVES K-40 5,818.3 +/- 427.9 21-JUN-10 HORSERADISH LEAVES MN-54 < 14.2 21-JUN-10 HORSERADISH LEAVES CO-58 < 10.1 21-JUN-10 HORSERADISH LEAVES FE-59 < 20.0 21-JUN-10 HORSERADISH LEAVES CO-60 < 13.5 21-JUN-10 HORSERADISH LEAVES ZN-65 < 25.8 21-JUN-10 HORSERADISH LEAVES ZR-NB-95 < 8.9 21-JUN-10 HORSERADISH LEAVES k1-31 < 25.2 21-JUN-10 HORSERADISH LEAVES CS-1 34 < 12.2 21-JUN-10 HORSERADISH LEAVES CS-1 37 < 14.1 19-JUL-10 HORSERADISH LEAVES BE-7 1,164.5 +/- 203.4 Duplicate 19-JUL-10 HORSERADISH LEAVES BE-7 1,293.1 +/- 218.5 19-JUL-10 HORSERADISH LEAVES K-40 6,254.7 +/- 521.9 Duplicate 19-JUL-10 HORSERADISH LEAVES K-40 7,283.7 +/- 565.4 19-JUL-10 HORSERADISH LEAVES MN-54

• 17.7 Duplicate 19-JUL-10 HORSERADISH LEAVES MN-54

• 17.9 19-JUL-10 HORSERADISH LEAVES CO-58

• 16.1 Duplicate 19-JUL-10 HORSERADISH LEAVES CO-58

• 10.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 65

Exposure Pathway - Ingestion Food/Garden Location D-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 19-JUL-10 HORSERADISH LEAVES FE-59 34.0 Duplicate 19-JUL-10 HORSERADISH LEAVES FE-59 34.3 19-JUL-10 HORSERADISH LEAVES CO-60 16.7 Duplicate 19-JUL-10 HORSERADISH LEAVES CO-60 14.2 19-JUL-10 HORSERADISH LEAVES ZN-65 50.1 Duplicate 19-JUL-10 HORSERADISH LEAVES ZN-65 28.8 19-JUL-10 HORSERADISH LEAVES ZR-NB-95 22.1 Duplicate 19-JUL-10 HORSERADISH LEAVES ZR-NB-95 13.2 19-JUL-10 HORSERADISH LEAVES 1-131 39.8 Duplicate 19-JUL-1 0 HORSERADISH LEAVES 1-131 16.1 19-JUL-10 HORSERADISH LEAVES CS-134 13.4 Duplicate 19-JUL-10 HORSERADISH LEAVES CS-134 15.4 19-JUL-10 HORSERADISH LEAVES CS-137 14.2 Duplicate 19-JUL-10 HORSERADISH LEAVES CS-137 16.1 30-AUG-1 0 HORSERADISH LEAVES BE-7 520.6 +1- 182.8 30-AUG-1 0 HORSERADISH LEAVES K-40 7,603.9 +1- 541.1 30-AUG-10 HORSERADISH LEAVES MN-54 13.8 30-AUG-10 HORSERADISH LEAVES CO-58 16.2 30-AUG-1 0 HORSERADISH LEAVES FE-59 23.7 30-AUG-1 0 HORSERADISH LEAVES CO-60 15.1 30-AUG-1 0 HORSERADISH LEAVES ZN-65 16.1 30-AUG-1 0 HORSERADISH LEAVES ZR-NB-95 15.0 30-AUG-1 0 HORSERADISH LEAVES 1-131 24.3 30-AUG-1 0 HORSERADISH LEAVES CS-134 13.7 30-AUG-10 HORSERADISH LEAVES CS-1 37 13.9 27-SEP-10 HORSERADISH LEAVES BE-7 375.8 +1- 175.6 27-SEP-10 HORSERADISH LEAVES K-40 5,112.1 +1- 540.8 27-SEP-10 HORSERADISH LEAVES MN-54 20.3 27-SEP-1 0 HORSERADISH LEAVES CO-58 18.7 27-SEP-1 0 HORSERADISH LEAVES FE-59 28.8 27-SEP-10 HORSERADISH LEAVES CO-60 11.9 27-SEP-1 0 HORSERADISH LEAVES ZN-65 22.9 27-SEP-10 HORSERADISH LEAVES ZR-NB-95 14.9 27-SEP-10 HORSERADISH LEAVES 1-131 29.2 27-SEP-10 HORSERADISH LEAVES CS-134 19.4 27-SEP-10 HORSERADISH LEAVES CS-1 37 18.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 66

Exposure Pathway - Ingestion Food/Garden Location H-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCilKg Wet) 26-APR-1 0 HORSERADISH LEAVES BE-7 917.3 +1- 201.2 26-APR-10 HORSERADISH LEAVES K-40 4,411.7 +1- 516.9 26-APR-10 HORSERADISH LEAVES MN-54 17.3 26-APR-1 0 HORSERADISH LEAVES CO-58 19.6 26-APR-1 0 HORSERADISH LEAVES FE-59 20.9 26-APR-1 0 HORSERADISH LEAVES CO-60 13.6 26-APR-1 0 HORSERADISH LEAVES ZN-65 42.3 26-APR-10 HORSERADISH LEAVES ZR-NB-95 16.8 26-APR-10 HORSERADISH LEAVES 1-131 16.2 26-APR-1 0 HORSERADISH LEAVES CS-134 15.5 26-APR-1 0 HORSERADISH LEAVES CS-1 37 23.0 17-MAY-10 HORSERADISH LEAVES BE-7 808.1 +1- 228.6 17-MAY-1 0 HORSERADISH LEAVES K-40 3,327.3 +1- 434.4 17-MAY-1 0 HORSERADISH LEAVES MN-54 18.1 17-MAY-1 0 HORSERADISH LEAVES CO-58 10.9 17-MAY-1 0 HORSERADISH LEAVES FE-59 24.5 17-MAY-1 0 HORSERADISH LEAVES CO-60 13.1 17-MAY-1 0 HORSERADISH LEAVES ZN-65 13.8 17-MAY-1 0 HORSERADISH LEAVES ZR-NB-95 13.1 17-MAY-10 HORSERADISH LEAVES 1-131 14.7 17-MAY-1 0 HORSERADISH LEAVES CS-134 16.4 17-MAY-1 0 HORSERADISH LEAVES CS-1 37 12.8 30-AUG-1 0 HORSERADISH LEAVES BE-7 559.8 +1- 196.6 30-AUG-1 0 HORSERADISH LEAVES K-40 5,920.9 +1- 637.2 30-AUG-1 0 HORSERADISH LEAVES MN-54 20.8 30-AUG-1 0 HORSERADISH LEAVES CO-58 15.5 30-AUG-1 0 HORSERADISH LEAVES FE-59 44.5 30-AUG-1 0 HORSERADISH LEAVES CO-60 17.4 30-AUG-1 0 HORSERADISH LEAVES ZN-65 43.0 30-AUG-1 0 HORSERADISH LEAVES ZR-NB-95 19.7 30-AUG-1 0 HORSERADISH LEAVES 1-131 34.3 30-AUG-1 0 HORSERADISH LEAVES CS-134 23.3 30-AUG-1 0 HORSERADISH LEAVES CS-137 25.1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 67

Exposure Pathway - Ingestion Food/Garden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCiIKg Wet) 26-APR-1 0 HORSERADISH LEAVES BE-7 532.8 +1- 172.4 26-APR-1 0 HORSERADISH LEAVES K-40 3,307.7 +1- 385.3 26-APR-1 0 HORSERADISH LEAVES MN-54 9.8 26-APR-1 0 HORSERADISH LEAVES CO-58 9.2 26-APR-1 0 HORSERADISH LEAVES FE-59 23.2 26-APR-10 HORSERADISH LEAVES CO-60 11.7 26-APR-1 0 HORSERADISH LEAVES ZN-65 35.6 26-APR-1 0 HORSERADISH LEAVES ZR-NB-95 17.7 26-APR-1 0 HORSERADISH LEAVES 1-131 23.3 26-APR-1 0 HORSERADISH LEAVES CS-134 15.3 26-APR-1 0 HORSERADISH LEAVES CS-1 37 17.4 17-MAY-1 0 HORSERADISH LEAVES BE-7 459.8 +1- 116.4 17-MAY-1 0 HORSERADISH LEAVES K-40 2,716.9 +1- 330.2 17-MAY-1 0 HORSERADISH LEAVES MN-54 12.2 17-MAY-1 0 HORSERADISH LEAVES CO-58 8.1 17-MAY-1 0 HORSERADISH LEAVES FE-59 18.8 17-MAY-1 0 HORSERADISH LEAVES CO-60 9.2 17-MAY-1 0 HORSERADISH LEAVES ZN-65 20.5 17-MAY-10 HORSERADISH LEAVES ZR-NB-95 13.9 17-MAY-10 HORSERADISH LEAVES 1-131 12.8 17-MAY-1 0 HORSERADISH LEAVES CS-134 11.5 17-MAY-1 0 HORSERADISH LEAVES CS-137 14.6 21-JUN-10 HORSERADISH LEAVES BE-7 468.6 +1- 137.2 21-JUN-10 HORSERADISH LEAVES K-40 4,087.6 +1- 378.3 21-JUN-10 HORSERADISH LEAVES MN-54 11.0 21-JUN-10 HORSERADISH LEAVES CO-58 8.2 21-JUN-10 HORSERADISH LEAVES FE-59 22.4 21-JUN-10 HORSERADISH LEAVES CO-60 9.6 21-JUN-1 0 HORSERADISH LEAVES ZN-65 25.7 21-JUN-10 HORSERADISH LEAVES ZR-NB-95 8.1 21-JUN-10 HORSERADISH LEAVES 1-131 29.1 21-JUN-10 HORSERADISH LEAVES CS-1 34 11.8 21-JUN-10 HORSERADISH LEAVES CS-137 14.6 19-JUL-10 HORSERADISH LEAVES BE-7 595.1 +1- 185.1 19-JUL-10 HORSERADISH LEAVES K-40 4,414.0 +1- 491.6 19-JUL-10 HORSERADISH LEAVES MN-54 12.6 19-JUL-10 HORSERADISH LEAVES CO-58 16.7 19-JUL-10 HORSERADISH LEAVES FE-59 22.1 19-JUL-10 HORSERADISH LEAVES CO-60 17.9 19-JUL-10 HORSERADISH LEAVES ZN-65 37.3 19-JUL-10 HORSERADISH LEAVES ZR-NB-95 17.5 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 68

Exposure Pathway - Ingestion Food/Garden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 19-JUL-10 HORSERADISH LEAVES 1-131 31.6 19-JUL-1 0 HORSERADISH LEAVES CS-134 15.7 19-JUL-10 HORSERADISH LEAVES CS-1 37 17.9 30-AUG-1 0 HORSERADISH LEAVES BE-7 658.7 +/- 152.2 30-AUG-1 0 HORSERADISH LEAVES K-40 3,658.3 +/- 372.6 30-AUG-1 0 HORSERADISH LEAVES MN-54 10.8 30-AUG-1 0 HORSERADISH LEAVES CO-58 13.1 30-AUG-1 0 HORSERADISH LEAVES FE-59 21.7 30-AUG-10 HORSERADISH LEAVES CO-60 12.0 30-AUG-1 0 HORSERADISH LEAVES ZN-65 26.6 30-AUG-1 0 HORSERADISH LEAVES ZR-NB-95 12.4 30-AUG-1 0 HORSERADISH LEAVES 1-131 27.4 30-AUG-1 0 HORSERADISH LEAVES CS-134 10.1 30-AUG-1 0 HORSERADISH LEAVES CS-1 37 14.0 27-SEP-1 0 HORSERADISH LEAVES BE-7 417.9+1 154.7 27-SEP-10 HORSERADISH LEAVES K-40 5,179.6+- 504.0 27-SEP-1 0 HORSERADISH LEAVES MN-54 16.9 27-SEP-1 0 HORSERADISH LEAVES CO-58 20.7 27-SEP-10 HORSERADISH LEAVES FE-59 26.1 27-SEP-10 HORSERADISH LEAVES CO-60 10.7 27-SEP-10 HORSERADISH LEAVES ZN-65 35.3 27-SEP-10 HORSERADISH LEAVES ZR-NB-95 17.6 27-SEP-10 HORSERADISH LEAVES 1-131 23.5 27-SEP-1 0 HORSERADISH LEAVES CS-134 15.0 27-SEP-1 0 HORSERADISH LEAVES CS-137 16.7 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 69

Exposure Pathway - Ingestion Food/Garden Location Q-6 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 21-JUN-10 HORSERADISH LEAVES BE-7 1,852.6 +1- 272.1 Duplicate 21-JUN-10 HORSERADISH LEAVES BE-7 1,856.4 +/- 246.8 21-JUN-10 HORSERADISH LEAVES K-40 6,095.1 +/- 571.7 Duplicate 21-JUN-10 HORSERADISH LEAVES K-40 6,096.7 +/- 516.3 21-JUN-10 HORSERADISH LEAVES MN-54 24.5 Duplicate 21-JUN-10 HORSERADISH LEAVES MN-54 11.0 21-JUN-10 HORSERADISH LEAVES CO-58 19.6 Duplicate 21-JUN-10 HORSERADISH LEAVES CO-58 13.6 21-JUN-10 HORSERADISH LEAVES FE-59 34.2 Duplicate 21-JUN-10 HORSERADISH LEAVES FE-59 24.0 21-JUN-10 HORSERADISH LEAVES CO-60 17.6 Duplicate 21-JUN-10 HORSERADISH LEAVES CO-60 13.3 21-JUN-10 HORSERADISH LEAVES ZN-65 31.6 Duplicate 21-JUN-10 HORSERADISH LEAVES ZN-65 36.9 21-JUN-10 HORSERADISH LEAVES ZR-NB-95 25.0 Duplicate 21-JUN-10 HORSERADISH LEAVES ZR-NB-95 19.6 21-JUN-10 HORSERADISH LEAVES 1-131 35.5 Duplicate 21-JUN-10 HORSERADISH LEAVES 1-131 18.2 21-JUN-10 HORSERADISH LEAVES CS-1 34 19.6 Duplicate 21-JUN-10 HORSERADISH LEAVES CS-1 34 12.4 21-JUN-10 HORSERADISH LEAVES CS-1 37 16.7 Duplicate 21-JUN-10 HORSERADISH LEAVES CS-137 14.2 19-JUL-10 HORSERADISH LEAVES BE-7 1,666.5+1 283.6 19-JUL-10 HORSERADISH LEAVES K-40 4,921.4 +/- 568.8 19-JUL-10 HORSERADISH LEAVES MN-54 21.1 19-JUL-10 HORSERADISH LEAVES CO-58 23.2 19-JUL-10 HORSERADISH LEAVES FE-59 46.6 19-JUL-10 HORSERADISH LEAVES CO-60 15.3 19-JUL-10 HORSERADISH LEAVES ZN-65 40.4 19-JUL-10 HORSERADISH LEAVES ZR-NB-95 21.1 19-JUL-10 HORSERADISH LEAVES 1-131 51.4 19-JUL-10 HORSERADISH LEAVES CS-134 21.2 19-JUL-10 HORSERADISH LEAVES CS-1 37 21.4 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 70

Exposure Pathway - Ingestion Feed and Forage Location NR-D1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCilKg Wet) 29-SEP-10 IRRIGATED CORN BE-7 < 34.3 29-SEP-10 IRRIGATED CORN K-40 2,670.5 +/- 225.4 29-SEP-10 IRRIGATED CORN MN-54 < -5.1 29-SEP-1 0 IRRIGATED CORN CO-58 < 7.4 29-SEP-1 0 IRRIGATED CORN FE-59 < 12.9 29-SEP-10 IRRIGATED CORN CO-60 < 4.6 29-SEP-10 IRRIGATED CORN ZN-65 < 15.4 29-SEP-10 IRRIGATED CORN ZR-NB-95 < 8.8 29-SEP-10 IRRIGATED CORN 1-131 < 8.2 29-SEP-1 0 IRRIGATED CORN CS-1 34 < 7.3 29-SEP-10 IRRIGATED CORN CS-137 < 8.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 71

Exposure Pathway - Ingestion Feed and Forage Location NR-D2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 23-SEP-10 IRRIGATED CORN BE-7 < 41.7

.23-SEP-1 0 IRRIGATED CORN K-40 2,871.0+/- 238.5 23-SEP-1 0 IRRIGATED CORN MN-54 < 7.3 23-SEP-1 0 IRRIGATED CORN CO-58 < 6.9 23-SEP-1 0 IRRIGATED CORN FE-59 < 13.1 23-SEP-10 IRRIGATED CORN CO-60 < 6.4 23-SEP-10 IRRIGATED CORN ZN-65 < 7.1 23-SEP-10 IRRIGATED CORN ZR-NB-95 < 7.2 23-SEP-1 0 IRRIGATED CORN 1-131 < 6.8 23-SEP-1 0 IRRIGATED CORN CS-134 < 5.0 23-SEP-10 IRRIGATED CORN CS-1 37 < 7.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 72

Exposure Pathway - Ingestion Feed and Forage Location NR-U1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 13-OCT-1 0 IRRIGATED SOYBEANS BE-7 < 78.7 13-OCT-1 0 IRRIGATED SOYBEANS K-40 14,278.0 +/- 568.5 13-OCT-10 IRRIGATED SOYBEANS MN-54 < 9.3 13-OCT-1 0 IRRIGATED SOYBEANS CO-58 < 10.9 13-OCT-1 0 IRRIGATED SOYBEANS FE-59 < 23.6 13-OCT-1 0 IRRIGATED SOYBEANS CO-60 < 7.7 13-OCT-1 0 IRRIGATED SOYBEANS ZN-65 < 22.3 13-OCT-10 IRRIGATED SOYBEANS ZR-NB-95 < 7.1 13-OCT-1 0 IRRIGATED SOYBEANS 1-131 < 15.0 13-OCT-1 0 IRRIGATED SOYBEANS CS-1 34 < 12.7 13-OCT-1 0 IRRIGATED SOYBEANS CS-1 37 < 10.9 13-OCT-1 0 NON-IRRIGATED CORN BE-7 61.4 13-OCT-1 0 NON-IRRIGATED CORN K-40 2,832.7 +/- 248.1 13-OCT-1 0 NON-IRRIGATED CORN MN-54 4.8 13-OCT-10 NON-IRRIGATED CORN CO-58 8.4 13-OCT-10 NON-IRRIGATED CORN FE-59 12.2 13-OCT-1 0 NON-IRRIGATED CORN CO-60 7.2 13-OCT-1 0 NON-IRRIGATED CORN ZN-65 12.7 13-OCT-1 0 NON-IRRIGATED CORN ZR-NB-95 8.3 13-OCT-1 0 NON-IRRIGATED CORN 1-131 16.2 13-OCT-1 0 NON-IRRIGATED CORN CS-134 6.9 13-OCT-1 0 NON-IRRIGATED CORN CS-137 5.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 73

Exposure Pathway - Aquatic Bottom Sediment Location DC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 25-MAY-1 0 K-40 11,563.0 +/- 1,307.0 25-MAY-1 0 MN-54 < 65.5 25-MAY- 10 CO-58 < 74.1 25-MAY- 10 FE-59 < 135.6 25-MAY- 10 CO-60 < 71.8 25-MAY-1 0 ZN-65 < 102.2 25-MAY-1 0 CS-1 34 < 63.8 25-MAY-1 0 CS-1 37 < 78.5 08-NOV-1 0 K-40 10,003.0 +/- 1,264.0 08-NOV-1 0 MN-54 < 55.2 08-NOV-10 CO-58 < 51.7 08-NOV-1 0 FE-59 < 70.0 08-NOV-1 0 CO-60 < 59.3 08-NOV-1 0 ZN-65 < 88.4 08-NOV-10 CS-134 < 50.0 08-NOV-1 0 CS-1 37 110.9 +/- 55.7 08-NOV-10 FE-55 < 6,444.0 2010 Annual' Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 74

Exposure Pathway - Aquatic Bottom Sediment Location JRR Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 25-MAY- 10 K-40 5,347.6 +/- 550.9 25-MAY- 10 MN-54 < 25.0 25-MAY-1 0 CO-58 < 12.7 25-MAY-1 0 FE-59 < 49.6 25-MAY-1 0 CO-60 < 15.9 25-MAY-1 0 ZN-65 < 40.4 25-MAY-1 0 CS-134 < 19.5 25-MAY-10 CS-1 37 < 25.1 08-NOV-10 K-40 13,040.0 +/- 1,501.0 08-NOV-10 MN-54 < 82.9 08-NOV-1 0 CO-58 < 62.5 08-NOV-1 0 FE-59 < 121.5 08-NOV-1 0 CO-60 < 39.8 08-NOV-10 ZN-65 < 96.6 08-NOV-10 CS-134 < 50.0 08-NOV-10 CS-137 111.7 +/- 58.1 08-NOV-10 FE-55 < 6,428.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 75

Exposure Pathway - Aquatic Bottom Sediment Location MUDS Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-JUN-10 K-40 9,695.8 +/- 625.8 02-JUN-10 MN-54 < 23.8 02-JUN-10 CO-58 < 14.8 02-JUN-10 FE-59 < 18.4 02-JUN-10 CO-60 < 20.4 02-JUN-10 ZN-65 < 32.3 02-JUN-10 CS-134 < 13.7 02-JUN-10 CS-1 37 < 22.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 76

Exposure Pathway - Aquatic Bottom Sediment Location UHS #1 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCiIKg Dry) 10-AUG-10 K-40 11,699.0 +/- 672.7 10-AUG- 10 MN-54 < 26.9 10-AUG- 10 CO-58 < 18.1 10-AUG-10 FE-59 < 22.9 10-AUG-10 CO-60 < 23.0 10-AUG-10 ZN-65 < 47.6 10-AUG-10 CS-134 < 19.5 10-AUG- 10 CS-1 37 54.1 +/- 29.1 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 77

Exposure Pathway

- Aquatic Bottom Sediment Location UHS

1. 2 Collection Date Nuclide Gamma Spectrum Concentration Duplicate 10-AUG-10 (pCi/Kg Dry) Analysis 10-AUG-10 K-40 10-AUG-10 MN-54 10,870.0 +1-678.1 10-AUG-1 0 CO-58 < 23.2 10-AUG-10 FE-59 < 23.6 10-AUG-10 CO-60 < 51.5 10-AUG-10 ZN-65 < 24.7 10-AUG-10 CS-1 34 < 39.8 CS-137 < 18.3 39.8 +/- 19.4 2010 Annual Radiological Environmental Wolf Creek Generating Operating Report Station Page C - 78

Exposure Pathway - Aquatic Bottom Sediment Location UHS #3 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 10-AUG-10 K-40 13,268.0 +/- 724.0 10-AUG-10 MN-54 < 26.1 10-AUG-10 CO-58 < 24.6 10-AUG-10 FE-59 < 28.5 10-AUG-10 CO-60 < 31.7 10-AUG- 10 ZN-65 < 44.8 10-AUG-10 CS-1 34 < 23.7 10-AUG- 10 CS-137 73.4 +/- 26.7 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 79

Exposure Pathway - Aquatic Bottom Sediment Location UHS #4 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 10-AUG-10 K-40 12,091.0 +/- 1,110.0 Duplicate 10-AUG-10 K-40 13,708.0 +/- 794.8 10-AUG-10 MN-54 < 41.7 Duplicate 10-AUG-10 MN-54 < 27.5 10-AUG-10 CO-58 < 36.5 Duplicate 10-AUG- 10 CO-58 < 18.6 10-AUG-10 FE-59 < 74.0 Duplicate 10-AUG- 10 FE-59 < 46.3 10-AUG- 10 CO-60 < 40.8 Duplicate 10-AUG- 10 CO-60 < 19.7 10-AUG-10 ZN-65 < 105.3 Duplicate 10-AUG-10 ZN-65 < 49.8 10-AUG-10 CS-134 < 32.4 Duplicate 10-AUG-10 CS-134 < 9.6 10-AUG-10 CS-137 94.3 +/- 51.9 Duplicate 10-AUG-10 CS-1 37 78.8 +/- 33.5 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 80

Exposure Pathway - Aquatic Bottom Sediment Location UHS #5 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 10-AUG-10 K-40 11,852.0 +/- 663.4 10-AUG- 10 MN-54 < 28.1 10-AUG-1 0 CO-58 < 22.6 10-AUG-10 FE-59 < 26.7 10-AUG-10 CO-60 < 17.8 10-AUG-10 ZN-65 < 52.8 10-AUG-10 CS-1 34 < 17.4 10-AUG-10 CS-1 37 54.6 +/- 28.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 81

Exposure Pathway - Aquatic Bottom Sediment Location UHS #6 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 10-AUG-10 K-40 12,270.0 +/- 696.4 10-AUG-10 MN-54 26.4 10-AUG- 10 CO-58 23.8 10-AUG-10 FE-59 26.9 10-AUG-10 CO-60 23.2 10-AUG-10 ZN-65 36.5 10-AUG-10 CS-1 34 18.2 10-AUG-10 CS-1 37 48.1 +/- 22.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 82

Exposure Pathway - Aquatic Vegetation Location DC-ALT Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 25-AUG-1 0 AMERICAN LOTUS BE-7 691.1 +/- 196.3 25-AUG-1 0 AMERICAN LOTUS K-40 2,448.8 +/- 291.3 25-AUG-1 0 AMERICAN LOTUS MN-54 < 11.6 25-AUG-1 0 AMERICAN LOTUS CO-58 < 13.4 25-AUG-10 AMERICAN LOTUS FE-59 < 16.0 25-AUG-10 AMERICAN LOTUS CO-60 < 11.1 25-AUG-10 AMERICAN LOTUS ZN-65

• 16.6 25-AUG-10 AMERICAN LOTUS ZR-NB-95

• 13.4 25-AUG-10 AMERICAN LOTUS 1-131

• 22.2 25-AUG-1 0 AMERICAN LOTUS CS-134 < 13.6 25-AUG-10 AMERICAN LOTUS CS-1 37 < 17.3 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 83.

Exposure Pathway - Aquatic Vegetation Location EEA Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 10-AUG-10 WATER PRIMROSE BE-7 382.6 +1- 154.0 Duplicate 10-AUG- 10 WATER PRIMROSE BE-7 430.6 +1- 165.1 10-AUG-10 WATER PRIMROSE K-40 2,651.6 +1- 286.9 Duplicate 10-AUG- 10 WATER PRIMROSE K-40 2,666.6 +1- 381.9 10-AUG-10 WATER PRIMROSE MN-54 11.8 Duplicate 10-AUG-10 WATER PRIMROSE MN-54 16.3 10-AUG-10 WATER PRIMROSE CO-58 9.6 Duplicate 10-AUG- 10 WATER PRIMROSE CO-58 11.0 10-AUG-10 WATER PRIMROSE FE-59 18.3 Duplicate 10-AUG-10 WATER PRIMROSE FE-59 30.2 10-AUG-10 WATER PRIMROSE CO-60 8.6 Duplicate 10-AUG- 10 WATER PRIMROSE CO-60 23.0 10-AUG- 10 WATER PRIMROSE ZN-65 21.3 Duplicate 10-AUG- 10 WATER PRIMROSE ZN-65 38.3 10-AUG- 10 WATER PRIMROSE ZR-NB-95 10.0 Duplicate 10-AUG- 10 WATER PRIMROSE ZR-NB-95 15.3 10-AUG-10 WATER PRIMROSE 1-131 20.9 Duplicate 10-AUG-10 WATER PRIMROSE 1-131 20.0 10-AUG-10 WATER PRIMROSE CS-1 34 12.7 Duplicate 10-AUG-10 WATER PRIMROSE CS-1 34 7.3 10-AUG-10 WATER PRIMROSE CS-1 37 14.6 Duplicate 10-AUG-10 WATER PRIMROSE CS-1 37 20.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 84

Exposure Pathway - Terrestrial Soil Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 10-AUG-1 0 K-40 9,437.1 +/- 612.2 10-AUG-10 MN-54 < 25.0 10-AUG-10 CO-58 < 19.6 10-AUG-10 FE-59 < 30.1 10-AUG- 10 CO-60 < 6.4 10-AUG-10 ZN-65 < 41.6 10-AUG-10 CS-1 34 < 15.3 10-AUG-10 CS-1 37 336.1 +/- 37.8 2010 Annual Radiological Environmental Operating Report-Wolf Creek Generating Station Page C- 85

Exposure Pathway - Terrestrial Soil Location MUDS Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-JUN-10 K-40 8,791.4 +/- 1,143.0 02-JUN-10 MN-54 < 40.5 02-JUN-10 CO-58 < 53.8 02-JUN-10 FE-59 < 51.7 02-JUN-10 CO-60 < 36.9 02-JUN-10 ZN-65 < 92.6 02-JUN-10 CS-1 34 < 50.6 02-JUN-10 CS-1 37 < 60.8 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 86

Exposure Pathway - Ingestion Meat Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-JAN-1 0 ALLIGATOR K-40 1,899.2+/- 293.1 28-JAN-1 0 ALLIGATOR MN-54 9.3 28-JAN-10 ALLIGATOR CO-58 9.8 28-JAN-10 ALLIGATOR FE-59 20.6 28-JAN-10 ALLIGATOR CO-60 13.8 28-JAN-10 ALLIGATOR ZN-65 22.2 28-JAN-10 ALLIGATOR CS-1 34 10.6 28-JAN-10 ALLIGATOR CS-1 37 16.7 28-JAN-10 ALLIGATOR H-3 7,737.0 +/- 219.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 87

Exposure Pathway - Ingestion Meat Location R2.5 Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 10-DEC-1 0 DEER K-40 2,793.3 +/- 347.8 10-DEC-1 0 DEER MN-54 12.7 10-DEC-1 0 DEER CO-58 8.5 10-DEC-1 0 DEER FE-59 17.0 10-DEC-1 0 DEER CO-60 14.5 10-DEC-1 0 DEER ZN-65 22.0 10-DEC-1 0 DEER CS-1 34 11.7 10-DEC-10 DEER CS-1 37 12.6 10-DEC-10 DEER H-3 626.0 +/- 92.0 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 88

WOLF CREEK GENERATING STATION 2010 LAND USE CENSUS REPORT Revision 1 F,

Prepared by:

12-16-2010 Teresa L. Rice Date Peer Review:

12-16-2010 Ralph L. Logsdon Date Approved by:

12-16-2010 Robert A. Hammond Date 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 1

EXECUTIVE

SUMMARY

The 2010 Land Use Census Report has been revised to incorporate the re-calculated D/Qs for the broadleaf vegetation locations using the data from Engineering Evaluation SA-10-004.

The annual Land Use Census of rural residents within five miles of the Wolf Creek Generating Station (WCGS) has been completed for 2010 in accordance with AP 07B-004, [Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program)].

No program changes are necessary regarding milk locations. Again, no milk sampling locations were identified.

No program changes are necessary regarding the broadleaf vegetation sample locations. The broadleaf vegetation locations that had the highest calculated annual average D/Q rankings are Q2.35-MILA1619, N2.38-RODR9, and L2.39-NARD1309, respectively. Samples are currently being obtained from locations Q2.35-MILA1619 and N2.38-RODR9.

BACKGROUND Section 5.2, Attachment A, of the ODCM procedure (AP 07B-004), directs that "a Land Use Census shall be conducted annually during the growing season to identify the nearest (1) milk animal, (2) residence, and (3) garden of greater than 500 square feet producing broadleaf vegetation in each of the 16 meteorological sections within five miles of the WCGS site" and "the results of the Land Use Census shall be included in the Annual Radiological Environmental Operating Report."

Table 5-1, Attachment A, of the ODCM (AP 07B-004) requires that broadleaf vegetation samples be collected from "two indicator locations (using the criteria from the "Land Use Census" section) with highest calculated annual average D/Q."

Table 5-1, Attachment A, of the ODCM (AP 07B-004) also requires that milk samples be collected from "three indicator locations within 5 miles of the site having the highest dose potential."

METHODOLOGY Two hundred fourteen surveys were mailed to the rural residents living within five miles of WCGS. A follow-up survey was sent to residents who did not respond. The survey excluded the residents of New Strawn, Burlington, and a trailer park north of Burlington. These locations were excluded due to the large number of households and the low likelihood that information gained from these residences would affect the locations chosen for REMP sampling. Drive-by information was collected for the nearest residences that did not return surveys.

The information collected was compiled and the results are identified in Tables 1-3.

Calculations were performed so that garden locations could be ranked by their respective D/Q.

These results are contained in Table 4.

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 2

RESULTS NOTE: A Global Positioning System was used to verify residence distances and sectors.

Three changes were noted for the nearest occupied residences in each sector. Those changes were in sectors E, F, and R.

Five location changes were noted for the nearest garden producing broadleaf vegetation.

These changes are identified in Table 3.

There were no changes regarding milk sample locations. Again, no locations were identified that routinely milked animals for human consumption.

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 3

TABLE 1 2010 Land Use Census Data Location of Nearest:

Sector Residence Milkinq Animals Broadleaf Garden A A2.60-17TE1 520 None None B B3.53-QURD1755 None None C C1.92-16RD1655 None C4.89-18RD1859 D D2.03-QULA1 571 None D3.00-16RD1829 E El.77-QULA1485 None None F F2.28-14RD 1785 None F2.44-RERD1391 G G3.03-13RD1820 None G3.77-12RD1831 H H3.09-12RD1711 None H3.30-QURD1 175 J J3.70-1 1RD1 540 None J3.90-1 1RD1 531 K K2.70-12LA1439 None None L L2.10-NARD1339 None L2.39-NARD1309 M M2.34-14RD1330 None M3.10-13LA1 290 N N1.71 -NARD 1441 None N2.38-RODR9 P P2.76-HW751534 None P2.76-HW751534 Q Q2.35-MILA1619 None 02.35-MILA1619 R R4.43-NARD1891 None None Identifiers are based upon the following protocol:

EXAMPLE: A1.4-16RD1525 "A" = Sector A "1.4" = 1.4 miles from the reactor "16RD1525" = address 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 4

TABLE 2 SECTOR 2009 NEAREST 2010 NEAREST RESIDENCE RESIDENCE A A2.60-17TE1 520 A2.60-17TE1520 B B3.53-QURD1755 B3.53-QURD1755 C C1.92-16RD1655 C1.92-16RD1655 D D2.03-QULA1571 D2.03-QULA1571 E E1.78-QULA1451 E1.77-QULA1485 F F2.39-14RD1802 F2.28-14RD1785 G G3.03-13RD 1820 G3.03-13RD 1820 H H3.09-12RD1711 H3.09-12RD1711 J J3.70-11RD1540 J3.70-11RD1540 K K2.70-12LA1439 K2.70-12LA1439 L L2.10-NARD1339 L2.10-NARD1339 M M2.34-14RD1330 M2.34-14RD1330 N N 1.71 -NARD1441 N 1.71 -NARD1441 P P2.76-HW751534 P2.76-HW751534 Q Q2.35-MILA1619 Q2.35-MILA1619 R R2.08-NALN1650 R4.43-NARD1891 NOTE: Entries underlined indicate changes from the 2009 Land Use Census.

Locations are identified based upon the following protocol:

EXAMPLE: A1.4-16RD1525 First letter is based upon sector, thus "A" designates this residence is in sector A.

The number immediately following the first letter designates the distance (in miles) from the reactor.

The characters following the dash represent a unique identifier based upon location address.

The example is in sector A, 1.4 miles from the reactor, at 1525 16th Road.

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 5

TABLE 3 2010 Land Use Census Milk and Garden Data SECTOR 2009 2010 2009 CLOSEST 2010 CLOSEST MILKING MILKING GARDEN GARDEN ANIMALS ANIMALS PRODUCING PRODUCING BROADLEAF BROADLEAF VEGETATION VEGETATION A None None A4.91-OXRD1940 None B None None None None C None None C3.58-RERD1675 C4.89-18RD1859 D None None D3.00-16RD1829 D3.00-16RD1829 E None None E4.40-TRRD1551 None F None None F2.39-14RD1802 F2.44-RERD1391 G None None G3.77-12RD1831 G3.77-12RD1831 H None None H3.30-QURD1175 H3.30-QURD1175 J None None J3.90-11RD1531 J3.90-11RD1531 K None None None None L None None L2.39-NARD1309 L2.39-NARD1309 M None None M2.34-14RD1330 M3.10-13LA1290 N None None N2.38-RODR9 N2.38-RODR9 P None None P2.76-HW751534 P2.76-HW751534 Q None None Q2.35-MILA1619 Q2.35-MILA1619 R None None None None NOTE: Underlined entries indicate changes from the 2009 Land Use Census.

Locations are identified based upon the following protocol:

EXAMPLE: A1.4-16RD1525 First letter is based upon sector, thus "A" designates this residence is in sector A.

The number immediately following the first letter designates the distance (in miles) from the reactor.

The characters following the dash represent a unique identifier based upon location address.

The example is in sector A, 1.4 miles from the reactor, at 1525 16th Road.

2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 6

TABLE 4 Information Used for D/Q Calculations FROM LAND FROM USE CENSUS SA-10-004 Eval.

DIST CALC NEAR NEAR FAR FAR SECTOR SECTOR (MI) (METERS) DIST D/0 DIST D/0 CALC RANKING A

B C 4.89 7870 7000 1.66E-10 8000 1.34E-10 1.38E-10 11 D 3.00 4828 4000 2.67E-10 5000 1.82E-10 1.97E-10 1 E

F 2.44 3927 3000 7.22E-10 4000 4.33E-10 4.54E-10 6 G 3.77 6067 6000 3.57E-10 7000 2.65E-10 3.51E-10 9 H 3.30 5311 5000 7.01E-10 6000 5.16E-10 6.43E-10 4 J 3.90 6276 6000 4.33E-10 7000 3.22E-10 4.02E-10 7 K

L 2.39 3846 3000 1.04E-09 4000 6.24E-10 6.88E-10 3 M 3.10 4989 4000 5.73E-10 5000 3.90E-10 3.92E-10 8 N 2.38 3830 3000 1.25E-09 4000 7.51E-10 8.36E-10 2 P 2.76 4442 4000 6.88E-10 5000 4.68E-10 5.91E-10 5 Q 2.35 3782 3000 1.53E-09 4000 9.17E-10 1.05E-09 1 R I I I Originated by: jwý Date: 12-16-2010 Verified by: Date: 12-16-2010 2010 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 7