ML101250154

2009 Annual Radiological Environmental Operating Report

ML101250154
Person / Time
Site:	Wolf Creek
Issue date:	04/28/2010
From:	Flannigan R Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 10-0039
Download: ML101250154 (152)

Text

WF CREEK NUCLEAR OPERATING CORPORATION Richard D. Flannigan April 28, 2010 Manager Regulatory Affairs RA 10-0039 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: 2009 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, 2009, through December 31, 2009.

No commitments are identified in this correspondence. If you have any questions concerning this matter, please contact me at (620) 364-4117, or Ms. Diane Hooper at (620) 364-4041.

Sincerely, Richard D. Flannigan RDF/rlt

Enclosure:

2009 Annual Radiological Environmental Operating Report cc: E. E. Collins (NRC), w/e G. B. Miller (NRC), w/e B. K. Singal (NRC), w/e Senior Resident Inspector (NRC), w/e P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831

-3fF31 An Equal Opportunity Employer M/F/HC/VET

Enclosure to Letter ET 10-0039 Wolf Creek Nuclear Operating Corporation Wolf Creek Generating Station 2009 Annual Radiological Environmental Operating Report (150 Pages)

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION 2009 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT F

April 15, 2010

TABLE OF CONTENTS List of Tables List of Figures List of Charts Executive Summary Introduction I. Program Description 1 II. Discussion of Results 4 III. Program Revisions/Changes 9 IV. Program Deviations 9 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 - 2009 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-57 Food/Garden C-63 Feed and Forage C-70 Bottom Sediment C-73 Aquatic Vegetation C-77 Terrestrial Vegetation C-79 Soil C-81 Deer C-83 Appendix D - 2009 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 90-Day Averages 27 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 2009 in airborne particulate and radioiodine filters, ground water, drinking water, broadleaf vegetation, shoreline sediment, crops, terrestrial vegetation, aquatic vegetation, or soil samples. Activation, corrosion or fission products attributable to plant operation were detected during 2009 in surface water, fish, deer, and bottom sediment 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 2009 Annual Radiological Environmental Operating Report for Wolf Creek Generating Station (WCGS) covers the period from January 1 through December 31, 2009. 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.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 1 of 32

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. 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.

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-1, G-2, J-1 and J-2) are hydrologically down gradient from the site and were used as indicator sample locations.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 2 of 32

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-U1. 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) and the control location (JRR). Gamma isotopic analyses were performed on the bottom sediment samples. 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.

Aquatic vegetation was collected from indicator locations EEA and MUDS. 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.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 3 of 32

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

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.

Two road-killed deer were sampled from indicator locations BI.0 and R2.5. Gamma isotopic analyses and tritium analyses were performed. These samples were collected as part of a cooperative sampling effort with the KDHE. The sample locations are 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, Revisions.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 2009 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 2009 weekly gross beta analyses range for indicator locations was 0.011 to 0.053 pCi/m 3, which was lower than the 1983 and 1984 pre-operational range. Additionally, the annual mean for indicator locations for 2009 (0.031 pCi/m 3) was slightly lower than the annual mean for 1983 (0.032 pCi/m 3).

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

The annual mean for indicator locations for 2009 (0.031 pCi/m 3) was the same as the annual mean of the control location (0.031 pCi/m 3). The indicator location with the highest gross beta annual mean was location 32 (0.032 pCi/mi), which was slightly higher than the annual mean of the control location (0.031 pCi/m 3).

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 4 of 32

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 2009, the range for Be-7 detected activity was 0.060 to 0.122 pCi/m 3 for indicator locations and the annual mean for indicator locations was 0.093 pCi/m 3 .

The control location annual mean for Be-7 detected activity (0.097 pCi/m 3) was slightly higher than the indicator locations annual mean (0.093 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 2009 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 standard 90-day quarter.

The annual mean of all indicator locations in 2009 was 0.132 mR/day and the annual mean for the control locations was also 0.132 mR/day. For pre-operational comparison, in 1981, the annual mean of all indicator locations was 0.21 mR/day and annual mean for the control locations was 0.19 mR/day.

The indicator location with the highest annual mean was 47 (0.194 mR/day). The close proximity of location 47 to the Radwaste Building is likely the reason direct radiation levels are higher at this location.

Chart 3 displays how closely the indicator and control location OSL dosimeter results are for 2009.

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.

C. Waterborne Pathway (1) Surface Water Tritium, attributable to WCGS operation, was detected in all surface water samples collected from Coffey County Lake during 2009. 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.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 5 of 32

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 2009 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 (3.1 pCi/L) was similar when compared to the annual mean of the control location gross beta activity (2.9 pCi/L). The 2009 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 2009 in drinking water samples and no unusual trends were noted.

(4) Shoreline Sediment Naturally occurring K-40 was detected in all shoreline sediment samples. K-40 was also detected during pre-operational shoreline sediment monitoring.

Cs-1 37 activity was detected in both shoreline sediment samples obtained from the JRR control location. The detected Cs-137 activity at the control location was likely due to fallout. Cs-137 activity was not detected in the shoreline sediment samples obtained from the DC indicator location.

ODCM required lower limits of detection were met. Plant-related activation, corrosion or fission products were not detected during 2009 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.

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(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.

During 2009, fish were also analyzed for tritium. All fish samples taken from Coffey County Lake had tritium activity detected (7,764 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 for 2009 (9,550 pCi/kg), would receive a committed effective dose equivalent of 0.013 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 2009 in broadleaf vegetation samples.

(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 2009 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.

Co-60 activity (57.9 pCi/kg) was detected in an indicator sample obtained from the Coffey County Lake discharge cove. Co-60 activity was attributable to plant operation and has been identified in plant effluents. Co-60 activity was not detected in pre-operational radiological environmental monitoring and was not detected in samples collected from control location JRR during 2009. Chart 7 plots the Co-60 detected activity from the discharge cove and reflects a decreasing trend. This downward trend is due to improvements made in the process system.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 7 of 32

Cs-137 activity (125.5 and 169.4 pCi/kg) was detected in both of the indicator location samples obtained from the Coffey County Lake discharge cove. A portion of this activity is due to fallout and a portion of this activity is likely plant-related since Cs-134 activity has been detected in the past. Cs-137 activity was detected in pre-operational samples, and the results for 2009 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-1 37 activity detected is approximately 41 to 490 pCi/kg.) Cs-137 activity has been identified in plant effluents. Cs-137 activity (138.0 pCi/kg) was also detected in one control location (JRR) bottom sediment sample.

Cs-137 activity (51.3, 76.5 and 82.4 pCi/kg) was also detected in three indicator location samples obtained from the Environmental Education Area (EEA). Since the detected Cs-137 activity was lower than the detected Cs-137 activity measured at the JRR control location (138.0 pCi/kg), this activity was likely due to fallout and not attributed to plant operation.

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-1 37 activity detected at the JRR control location has 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 samples collected in 2009. Be-7 and K-40 activity were also detected during pre-operational monitoring.

No other radionuclides were detected in aquatic vegetation samples. Plant-related activation, corrosion or fission products were not detected during 2009 in aquatic vegetation samples and no unusual trends were noted.

(4) Terrestrial Vegetation Naturally occurring Be-7 and K-40 activity were detected in terrestrial vegetation indicator location samples collected in 2009. No other radionuclides were detected. Plant-related activation, corrosion or fission products were not detected during 2009 in terrestrial vegetation samples and no unusual trends were noted.

(5) Soil Naturally occurring K-40 activity was detected in all of the indicator location soil samples. K-40 activity was also detected during pre-operational soil monitoring.

Cs-137 activity (285.2 and 405.1 pCi/kg) was also detected in two of the indicator location soil samples (EEA and MUDS). This activity is likely due to fallout. Data was reviewed for soil samples collected pre-operationally. The detected Cs-137 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 143 to 1,212 pCi/kg. The range of the 2009 detected Cs-137 activity in soil is within the decay corrected pre-operational range.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 8 of 32

Plant-related activation, corrosion or fission products were not detected during 2009 in soil samples and no unusual trends were noted.

(6) Deer Naturally occurring K-40 activity was detected in the deer samples obtained from the two indicator locations.

The deer samples were also analyzed for tritium. The detected tritium activity (218 and 496 pCi/kg, wet) was attributable to plant operation.

One deer sample had Cs-1 37 activity (25.1 pCi/kg, wet) detected. This activity was likely due to fallout and not attributed to plant operation since Cs-137 activity was not detected in the broadleaf vegetation samples, the terrestrial vegetation samples, or the air particulate samples.

No other radionuclides were detected in the deer samples. No unusual trends were identified.

Ill. PROGRAM REVISIONS/CHANGES Broadleaf vegetation alternate indicator location C-2 was removed from the REMP since the garden is no longer available to sample.

Alternate company-owned garden locations B-1, H-2, and R-2 were added to the REMP to enhance broadleaf vegetation sampling.

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 53 03/05/09 - 03/11/09 40%/56 Power Outage Condition Report 2009-001173 53 03/26/09 - 04/01/09 34%/38 Ground Fault Circuit Interrupter Tripped Condition Report 2009-001618 53 04/15/09 - 04/22/09 51%/84 Ground Fault Circuit Interrupter Tripped Condition Report 00016281 53 04/22/09 - 04/29/09 166%/27 Ground Fault Circuit Interrupter I Tripped Condition Report 00016281 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 9 of 32

Location Sample Period Percent Explanation of Deviation/

Discrepancy/ Condition Report Number/

Hours Comments Unavailable 2 06/04/09 - 06/10/09 14%/20 Ground Fault Circuit Interrupter Tripped Condition Report 00017798 18 06/04/09 - 06/10/09 15%/21 Ground Fault Circuit Interrupter Tripped Condition Report 00017798 32 06/04/09 - 06/10/09 17%/24 Ground Fault Circuit Interrupter Tripped Condition Report 00017798 37 06/04/09 - 06/10/09 15%/21 Ground Fault Circuit Interrupter Tripped Condition Report 00017798 2 06/10/09 - 06/17/09 8%/14 Power Outage Condition Report 00017922 32 06/10/09 - 06/17/09 99%/i166 Ground Fault Circuit Interrupter Tripped Condition Report 00017921 2 06/17/09 - 06/24/09 70%/i117 Power Outage - Under voltage Condition Report 00018083.

Due to small sample volume, the LLD for 1-131 was not obtained.

18 07/01/09 - 07/08/09 59%/101 Ground Fault Circuit Interrupter Tripped Condition Report 00017798 32 07/01/09 - 07/08/09 65%//111 Ground Fault Circuit Interrupter Tripped Condition Report 00017798 To increase the reliability of the air sample equipment, surge protectors were installed in 2009.

Additionally, on 07-07-2009, the ground fault circuit interrupter protected outlets were replaced.

Drinking Water Samples Drinking water was not continuously collected at Iola during the 08-05-2009 to 09-09-2009 sample period due to a faulty power converter. The power converter was replaced and the sampler was returned to service the same day. Condition Report 00019804 was generated to document the condition.

Drinking water was not continuously collected at Iola during the 12-01-2009 to 01-04-2010 sample period due to a tube becoming disconnected during the sample period. Approximately 3/ of a gallon of water was collected before the tube became disconnected. This sample and a grab sample were submitted to the vendor lab for analysis. Condition Report 00022695 was generated to document the condition.

Irrigated Crop Samples The 1-131 lower limit of detection (LLD) was not met on two irrigated crop samples collected from NR-D2. A shipping delay was the cause for the missed LLDs. Condition Report 00022550 was generated to document the condition.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 10 of 32

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 2009, 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 0.170 mRem for 2009.

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 (11,356 pCi/L), would receive a committed effective dose equivalent of 0.518 mRem per year. For an adult eating 21 kg of fish per year from Coffey County Lake, using the average tritium activity (7,764 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 0.528 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 2009 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) 2009 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 2009 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),

sschools (Locations 23 k 52), Environmental Education Area (44),

E_,CL Public Fishing

,rea (46) and in two

• reas to serve as C:ontrol stations 10-20 rniles distant from the

ite (Locations 39 and

,8 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).

2009 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.

2009 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-1, 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).

2009 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 2009 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 O-DW 26.1 SSE H Shoreline Sediment DC 0.8 WNW P 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 EEA 3.0 NNW R JRR 3.7 W N MUDS 1.5 WNW P Aquatic Vegetation EEA 3.0 NNW R MUDS 1.5 WNW P Terrestrial Vegetation EEA 3.0 NNW R MUDS 1.5 WNW P Soil EEA 3.0 NNW R MUDS 1.5 WNW P Deer B1.0 1.0 NNE B R2.5 2.5 NNW R 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 18 of 32

TABLE 3 OSL Dosimeter Results (mR/90-day qtr.)

Location Qtr. 1 90-Day Qtr. 2 90-Day Qtr. 3 90-Day Qtr. 4 90-Day Total Annual Avg. Avg. Avg. Avg. Exposure (mR) 1 12.0 10.8 14.7 13.4 50.9 2 9.2 10.3 11.5 10.3 41.3 4 13.0 13.0 14.1 11.2 51.3 5 9.3 10.9 12.6 9.4 42.1 7 9.7 14.1 14.7 11.6 50.1 8 11.6 13.6 14.7 11.6 51.5 9 9.7 11.4 9.4 9.4 40.0 11 12.5 16.3 15.7 12.1 56.6 12 9.7 11.4 15.2 11.6 47.9 13 14.4 12.5 12.6 12.1 51.5 14 15.8 13.0 15.7 11.2 55.7 15 14.4 13.6 15.7 11.2 54.8 16 12.1 9.8 12.6 10.3 44.7 17 8.8 13.0 12.6 10.3 44.7 18 11.6 10.3 13.1 11.6 46.6 19 12.1 13.0 16.2 11.9 53.2 20 12.1 12.5 11.0 9.3 44.8 22 13.9 15.2 15.2 11.0 55.3 23 11.1 10.3 13.6 13.4 48.4 24 11.6 14.1 13.1 11.6 50.4 25 8.4 8.7 10.5 9.0 36.5 26 12.1 9.8 8.9 8.8 39.6 27 13.5 14.6 13.6 11.4 53.2 29 7.4 9.8 6.8 8.0 32.0 30 11.6 14.1 14.1 13.6 53.5 32 8.4 10.8 12.6 10.3 42.1 34 10.6 14.1 14.7 10.1 49.5 35 11.5 11.4 11.5 11.6 46.1 36 10.1 14.6 13.6 12.1 50.5 37 11.5 12.5 14.1 12.5 50.6 38 12.9 13.6 15.2 12.3 53.9 39 8.8 10.8 13.1 10.1 42.9 41 8.7 14.1 13.6 10.3 46.8 42 6.5 6.0 6.8 4.9 24.2 43 8.4 5.4 6.3 4.9 25.0 44 13.4 13.6 14.1 11.2 52.2 46 13.9 12.5 13.1 11.0 50.5 47 13.0 14.6 17.8 24.4 69.8 48 9.7 11.9 11.0 11.2 43.8 49 9.8 9.8 11.0 11.2 41.7 50 12.1 12.5 14.7 13.0 52.1 51 9.3 10.8 10.5 11.9 42.5 52 14.4 12.5 15.7 11.6 54.2 53 12.1 13.0 16.2 14.7 56.0 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 19 of 32

FIGURE 1 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station >Page 20 of 32

FIGURE 2 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 21 of 32

FIGURE 3 WATERBORNE PATHWAY SAMPLING LOCATIONS

• = DRINKING WATER A = SURFACE WATER 0 = GROUND WATER * = SHORELINE SEDIMENT

• = BOTTOM SEDIMENT *. = AQUATIC VEGETATION 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 22 of 32

3 FIGURE 4 INGESTION PATHWAY SAMPLING LOCATIONS A = FISH (JRR) * = BROADLEAF VEGETATION ** SOIL t-- FISH (CCL) 4= TERRESTRIAL VEGETATION P = DEER 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 23 of 32

FIGURE 5 A

ID E

• = Dosimeter

= AIRBORNE PARTICULATE &RADIOXODINE 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 24 of 32

CHART 1 2009 Airborne Gross Beta Weekly Results 0.060 0.050 I.'U KA M +S A +

.* 0.040 .,_6 **

E C.,

0.030 AA M

a1)

CD L

w 0.020 U, 0

0!

0.010 0.000 r I f I t I 0 4 8 12 16 20 24 28 32 36 40 44 48 52 Week Number m Location 2

• Location 18 + Location 32 A Location 37 u Location 49 Location 53 (Control) 2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 25 of 32

CHART 2 0.060 (D

i E

0.050 0

0~ 0.040 U) 0 CM) 0 0.030 0

0) 0.020 E0 U) 0.010 N

0 Z0

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

Smoothed Avg. Control Location (48) Smoothed Avg. Control Location (53) 2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 26 of 32

CHART 3 OSL Dosimeters - Indicator and Control Locations 90-Day Averages 14.0 13.0-12.0-11.0-10.0-9.0-8.0-7.0 6.0 5.0 4.0 2008/1 2008/2 2008/3 2008/4 2009/1 2009/2 2009/3 2009/4 Year/Quarter I

• Indicator Locations 90-Day Average (mR) -- w- Control Locations 90-Day Average (mR) 2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 27 of 32

CHART4 Historical TLD Nearsite Locations and Control Locations 32.0 30.0 28.0 26.0 24.0 Er 22.0 20.0 18.0 16.0 14.0 12.0 -

1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

• Avg. of Nearsite Locations a Avg. of Control Locations

-- Moving Avg. of Nearsite Locations (2 period) - - - Moving Avg. of Control Locations (2 period) 2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 28 of 32

CHART 5 Coffey County Lake Surface Water Tritium Data 16000 14000 12000 10000 o1 C. 8000 6000 4000 2000 0 4-1987 1992 1997 2002 2007 Yearly Average of Spillway Location - Polynomial Trendline 2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 29 of 32

CHART 6 9

8 7

6 ci 5

0*

4 Co Co 0D 3

2 1

01 Q~ ~ ,*0

• N0

• z 0Z

• 0

,q" " ,*0\\- 9,"

S, "-, *

,q" , ,%" 0, 0*, 0, \' . .

I -- BW15 (Control) - - - NFDW (Indicator) - -IODW (Indicator) 2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 30 of 32

I CHART 7 Detected Co-60 Activity in Coffey County Lake Discharge Cove Bottom Sediment 2500 2000 1500 U

0.

1000 500 0

1-0)

CD CD 93 C

00 0)

Y-0) 0 0)

) 010 0) 10*

0) 100 0) 10, 0) t-0)

COO 0) am, 0) 0 0

E 0

"0 0

Col 0

10- U0, 10 r0- CO 0)1 0 0 0 0 0 0~

oo 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I-4*- Co Polynomial Trendline]

2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 31 of 32

CHART 8 Detected Cs-137 Activity in Bottom Sediment 1000 900-800 700-600

_0 500 300 "

200=

100 -

I I II. I i Ii . .I. . .

NO 0 - N C)

M~ L r- (MA 0 M- 0 N N MV ItJ MA 0 t" N- CM CM M

~~~~~~1~~1~~~~

,-ý - ~ - - - - ' -C- N N N N LO N-Cl - CV 0(0( N 0 - N- '- LO 0Z6 0 0( V

'-ON

'- N ~ CM -0 V)' NO '-0 Q- ' '0 NN N LO A O ) MA(0 ( N -LAO LO ) ' LAD '--( 'LAU (0( 0 0000 00 0 000 -00' '-0' '-00 '0 00

. DC Cs-137 s JRR Cs-137 - Polynomial Trendline (DC) ------Polynomial Trendline (JRR) 2009 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 32 of 32

- Environmental, Inc.

Midwest Laboratory an Allegheny Technologies Co.

700 Landwehr Road

• Northbrook, IL 60062-2310 ph. (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, 2009 through December, 2009

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 < 100 pCi/liter 5.0 pCi/liter

> 100 oCi/liter 5% of known value Tritium 5 4,000 pCi/liter +/-10 =

169.85 x (known)00933

> 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, < 55 pCi/liter 6 pCi/liter Iodine-1 2 9 b > 55 pCi/liter 10% of-known value Uranium-238, 5 35 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 8 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-1 181 04/06/09 Sr-89 41.0 +/- 5.8 48.3 37.8 - 55.7 Pass STW-1181 04/06/09 Sr-90 32.4 +/- 2.4 31.4 22.9 - 36.4 Pass STW-1182 04/06/09 Ba-133 44.6 +/- 3.1 52.7 43.4 - 58.3 Pass STW-1182 04/06/09 Co-60 81.0 +/- 3.1 88.9 80.0 - 100.0 Pass STW-1 182 04/06/09 Cs-134 65.6 +/- 5.2 72.9 59.5 - 80.2 Pass STWo1182 a 04/06/09 Cs-137 147.7 +/- 5.3 168.0 151.0 - 187.0 Fail STW-1182 04/06/09 Zn-65 79.8 +/- 7.5 84.4 76.0 - 101.0 Pass STW-1183 04/06/09 Gr. Alpha 47.6 +/- 2.1 54.2 28.3 - 67.7 Pass STW-1183 04/06/09 Gr. Beta 38.5 +/- 1.3 43.5 29.1 - 50.8 Pass STW- 1184 04/06/09 1-131 24.4 +/- 2.5 26.1 21.7 -30.8 Pass STW-1 185 04/06/09 Ra-226 14.0 +/- 0.7 15.1 11.2 -17.3 Pass STW-1 185 04/06/09 Ra-228 14.3 +/- 2.1 13.6 9.0 - 16.6 Pass STW-1 185 04/06/09 Uranium 25.0 +/- 0.2 25.7 20.6 - 28.8 Pass STW-1 186 e 04/06/09 H-3 22819.0 +/- 453.0 20300.0 17800.0 - 22300.0 Fail STW-1193 10/05/09 Sr-89 53.0 +/- 6.0 62.2 50.2 - 70.1 Pass STW-1193 10/05/09 Sr-90 31.1 +/- 2.2 30.7 22.4 - 35.6 Pass STW-1194 10/05/09 Ba-133 82.5 +/- 3.5 92.9 78.3-102.0 Pass STW-1 194 10/05/09 Co-60 116.8 +/-3.3 117.0 105.0 - 131.0 Pass STW-1 194 10/05/09 Cs-134 78.8 +/- 5.7 78.8 65.0 - 87.3 Pass STW-1194 10/05/09 Cs-137 54.2 +/- 3.7 54.6 49.1 -62.9 Pass STW-1194 10/05/09 Zn-65 102.5 +/- 6.2 99.5 89.6-119.0 Pass STW-1 195 10/05/09 Gr. Alpha 20.3 +/- 2.0 23.2 11.6-31.1 Pass STW-1 195 10/05/09 Gr. Beta 23.7 +/- 1.4 26.0 16.2 - 33.9 Pass STW-1196 10/05/09 1-131 22.4 +/- 1.4 22.2 18.4 - 26.5 Pass STW-1 197 10/05/09 Ra-226 15.0 +/- 0.7 13.9 10.4 - 16.0 Pass STW-1197 10/05/09 Ra-228 17.4 +/- 2.0 14.9 10.0 - 18.0 Pass STW-1 197 10/05/09 Uranium 32.5 +/- 0.4 33.8 27.3 - 37.8 Pass STW-1 198 10/05/09 H-3 17228.0 +/- 694.0 16400.0 14300.0 - 18000.0 Pass h Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

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

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

d All gamma -emitters showed a low bias. A large plastic burr found on the base of the Marinelli kept the beaker from sitting directly on the detector. Result of recount in a different beaker, Cs-1 37, 155.33 +/- 14.55 pCi/L.

e Samples were recounted and also reanalyzed. A recount of the original vials averaged 23,009 pCi/L.

Reanalysis results were acceptable, 19,170 pCi/L.

Al-1

TABLE A-2. Crosscheck program results; Thermoluminescent Dosimetry, (TLD, CaSO 4 : Dy Cards).

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

2009-1 7/6/2009 40 cm. 41.82 45.43 +/- 3.66 29.27 -54.37 Pass 2009-1 7/6/2009 50 cm. 26.76 32.17 +/- 1.52 18.73 -34.79 Pass 2009-1 7/6/2009 60 cm. 18.58 20.23 +/- 1.60 13.01 -24.15 Pass 2009-1 7/6/2009 70 cm. 13.65 15.28 +/- 0.79 9.56 -17.75 Pass 2009-1 7/6/2009 90 cm. 8.26 7.97 +/- 0.40 5.78 -10.74 Pass 2009-1 7/6/2009 90 cm. 8.26 7.37 +/- 0.49 5.78 -10.74 Pass 2009-1 716/2009 100 cm. 6.69 6.16 +/- 0.64 4.68 - 8.70 Pass 2009-1 7/6/2009 110 cm. 5.53 4.38 +/- 0.24 3.87 -7.19 Pass 2009-1 7/6/2009 120 cm. 4.65 4.34 +/- 0.23 3.26 - 6.05 Pass 2009-1 7/6/2009 150 cm. 2.97 2.92 +/- 0.25 2.08 - 3.86 Pass Environmental, Inc.

2009-2 12/27/2009 40 cm. 44.83 51.38 +/- 2.69 31.38 -58.28 Pass 2009-2 12/27/2009 50 cm. 28.69 31.65 +/- 2.81 20.08 -37.30 Pass 2009-2 12/27/2009 60 cm. 19.92 21.38 +/- 1.19 13.94 -25.90 Pass 2009-2 12/27/2009 60 cm. 19.92 22.30 +/- 0.50 13.94 -25.90 Pass 2009-2 12/27/2009 75 cm. 12.75 13.48 +/- 1.02 8.93 -16.58 Pass 2009-2 12/27/2009 90 cm. 8.85 9.62 +/- 0.74 6.20 -11.51 Pass 2009-2 12/27/2009 90 cm. 8.85 8.39 +/- 0.86 6.20 -11.51 Pass 2009-2 12/27/2009 100 cm. 7.17 6.65 +/- 0.96 5.02 -9.32 Pass 2009-2 12/27/2009 120 cm. 4.98 4.89 +/- 0.53 3.49 - 6.47 Pass 2009-2 12/27/2009 120 cm. 4.98 4.92 +/- 0.58 3.49 - 6.47 Pass 2009-2 12/27/2009 150 cm. 3.19 2.74 +/- 0.39 2.23 -4.15 Pass 2009-2 12/27/2009 180 cm. 2.21 1.65 +/- 0.33 1.55 -2.87 Pass 2009-2 12/27/2009 180 cm. 2.21 2.12 +/- 0.69 1.55 -2.87 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 W-12009 1/20/2009 Ra-226 12.88 +/- 0.41 12.69 8.88 - 16.50 Pass W-12009 1/27/2009 Gr. Alpha 20.20 +/- 0.40 20.08 10.04 -30.12 Pass W-12709 1/27/2009 Gr. Beta 46.26 +/- 0.42 45.60 35.60 - 55.60 Pass SPW-5553 1/27/2009 Ra-228 29.11 +/- 2.53 28.66 20.06 - 37.26 Pass SPW-217 1/29/2009 U-238 44.98 +/- 2.30 41.70 29.19 - 54.21 Pass SPW-539 2/24/2009 Ni-63 167.93 +/- 3.79 211.00 147.70 - 274.30 Pass SPW-718 3/6/2009 C-14 4893.50 +/- 21.69 4740.20 2844.12 -6636.28 Pass SPMI-814 3/16/2009 Cs-134 34.91 +/- 3.85 35.70 25.70 - 45.70 Pass SPMI-814 3/16/2009 Cs-137 59.17 +/- 6.70 55.60 45.60 - 65.60 Pass SPMI-814 3/16/2009 Sr-90 40.82 +/- 1.59 44.07 35.26 - 52.88 Pass SPMI-815 3/16/2009 1-131 70.99 +/- 0.62 69.60 55.68 - 83.52 Pass SPMI-815 3/16/2009 1-131(G) 63.08 +/- 7.12 69.60 59.60 - 79.60 Pass SPW-817 3/16/2009 1-131 62.11 +/- 0.59 69.60 55.68 - 83.52 Pass SPW-817 3/16/2009 1-131(G) 64.55 +/- 8.32 69.60 59.60 - 79.60 Pass SPW-818 3/16/2009 Co-60 50.84 +/- 4.70 51.99 41.99 - 61.99 Pass SPW-818 3/16/2009 Cs-134 33.78 +/- 3.42 35.70 25.70 - 45.70 Pass SPW-818 3/16/2009 Cs-137 61.27 +/- 7.18 55.64 45.64 - 65.64 Pass SPW-818 3/16/2009 Sr-90 47.26 +/- 1.89 44.07 35.26 - 52.88 Pass SPAP-903 3/23/2009 Cs-134 13.29 +/- 2.89 14.19 4.19 -24.19 Pass SPAP-903 3/23/2009 Cs-137 103.24 +/- 7.54 111.23 100.11 - 122.35 Pass SPCH-916 3/24/2009 1-131(G) 0.22 +/- 0.02 0.22 0.13 -0.31 Pass SPVE-888 4/1/2009 1-131(G) 0.40 +/- 0.08 0.35 0.21 - 0.49 Pass SPF-820 4/7/2009 Cs-134 0.58 +/- 0.02 0.56 0.34 - 0.78 Pass W-40909 4/9/2009 Gr. Alpha 19.26 +/- 0.40 20.08 10.04 - 30.12 Pass W-40909 4/9/2009 Gr. Beta 48.04 +/- 0.42 45.60 35.60 - 55.60 Pass SPW-12641 4/10/2009 Ra-228 40.06 +/- 2.79 40.54 28.38 - 52.70 Pass SPW-1267 4/10/2009 U-238 41.71 +/- 2.25 41.70 29.19 - 54.21 Pass TWW-2124 4/21/2009 H-3 7932.00 +/- 279.00 7063.00 5650.40 - 8475.60 Pass W-42809 4/28/2009 Ra-226 14.49 +/- 0.53 16.78 11.75 - 21.81 Pass SPMI-2186 5/12/2009 Cs-134 32.55 +/- 1.26 33.89 23.89 - 43.89 Pass SPMI-2186 5/12/2009 Cs-137 54.27 +/- 2.60 55.60 45.60 - 65.60 Pass SPMI-2186 5/12/2009 1-131 60.81 +/- 0.63 52.40 40.40 - 64.40 Pass SPMI-2186 5/12/2009 1-131(G) 56.89 +/- 2.56 52.40 42.40 - 62.40 Pass SPMI-2186 5/12/2009 Sr-90 43.88 +/- 1.68 52.40 41.92 -62.88 Pass SPW-2497 5/27/2009 Fe-55 2472.37 +/- 10.76 2106.35 1685.08 - 2527.62 Pass SPW-3448 7/14/2009 Cs-137 171.06 +/- 9.21 166.10 149.49 - 182.71 Pass SPW-3497 7/15/2009 Ni-63 179.99 +/- 3.06 210.40 147.28 - 273.52 Pass SPW-3499 7/15/2009 Tc-99 29.61 +/- 0.81 32.34 20.34 - 44.34 Pass SPMI-3582 7/17/2009 Cs-134 32.86 +/- 3.72 31.89 21.89 - 41.89 Pass SPMI-3582 7/17/2009 Cs-137 182.49 +/- 10.54 166.10 149.49 - 182.71 Pass SPAP-3595 7/17/2009 Cs-134 13.01 +/- 3.00 12.75 2.75 - 22.75 Pass SPAP-3595 7/17/2009 Cs-137 110.63 +/- 6.58 110.73 99.66 - 121.80 Pass A3-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 Activity Limitsc Acceptance SPF-3597 7/17/2009 Cs-134 0.53 +/- 0.03 0.51 0.31 - 0.71 Pass SPF-3597 7/17/2009 Cs-137 2.43 +/- 0.05 2.22 1.33 -3.10 Pass SPW-3599 7/17/2009 H-3 63246.00 +/- 725.00 62495.00 49996.00 - 74994.00 Pass SPW-12643 8/3/2009 Ra-228 38.18 +/- 2.72 40.54 28.38 - 52.70 Pass W-80709 8/7/2009 Ra-226 16.28 +/- 0.41 16.77 11.74 - 21.80 Pass W-81009 8/10/2009 Gr. Alpha 20.58 +/- 0.44 20.08 10.04 -30.12 Pass W-81009 8/10/2009 Gr. Beta 44.44 +/- 0.40 45.60 35.60 - 55.60 Pass W-100109 10/1/2009 Ra-226 15.68 +/- 0.41 16.77 11.74 - 21.80 Pass W-102709 10/27/2009 Gr. Alpha 21.50 +/- 0.43 20.08 10.04 - 30.12 Pass W-102709 10/27/2009 Gr. Beta 44.83 +/- 0.40 45.60 35.60 - 55.60 Pass SPW-5964 10/28/2009 U-238 40.20 +/- 1.87 41.70 29.19 -54.21 Pass SPW-12647 11/6/2009 Ra-228 44.49 +/- 3.33 40.54 28.38 - 52.70 Pass SPAP-6769 12/14/2009 Gr. Beta 45.43 +/- 0.11 49.48 29.69 - 69.27 Pass SPAP-6774 12/14/2009 Cs-134 10.32 +/- 0.83 11.11 1.11 -21.11 Pass SPAP-6774 12/14/2009 Cs-137 106.58 +/- 2.51 109.70 98.73 - 120.67 Pass SPF-6776 12/14/2009 Cs-134 0.43 +/- 0.02 0.44 0.26 - 0.62 Pass SPF-6776 12/14/2009 Cs-137 2.33 +/- 0.05 2.19 1.31 -3.07 Pass SPW-6780 12/14/2009 Tc-99 30.71 +/- 1.09 32.34 20.34 - 44.34 Pass SPMI-6782 12/14/2009 Co-60 74.30 +/- 5.41 72.81 62.81 -82.81 Pass SPMI-6782 12/14/2009 Cs-134 58.82 +/- 3.75 55.54 45.54 - 65.54 Pass SPMI-6782 12/14/2009 Cs-137 178.18 +/- 9.68 164.55 148.10 - 181.01 Pass SPW-6784 12/14/2009 Co-60 74.03 +/- 4.64 72.81 62.81 -82.81 Pass SPW-6784 12/14/2009 Cs-134 54.84 +/- 3.83 55.54 45.54 - 65.54 Pass SPW-6784 12/14/2009 Cs-137 180.06 +/- 8.81 164.55 148.10 - 181.01 Pass 3

a Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/m ), 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).

Results are based on single determinations.

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

eControl limits based on the laboratory limit, Attachment A ("Other Analyses").

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 (4.66a) Acceptance Type LLD Activityc Criteria (4.66 a)

W-12009 Water 1/20/2009 Ra-226 0.05 0.06 +/- 0.04 1 SPW-5554 Water 1/27/2009 Ra-228 0.08 0.17 +/- 0.40 2 W-12709 Water 1/27/2009 Gr. Alpha 0.35 0.22 +/- 0.27 1 W-12709 Water 1/27/2009 Gr. Beta 0.74 -0.08 +/- 0.51 3.2 SPW-218 Water 1/29/2009 U-238 0.19 -0.06 +/- 0.09 1 SPW-538 Water 2/24/2009 Ni-63 7.91 4.96 +/- 4.93 20 SPW-717 Water 3/6/2009 C-14 7.66 3.03 +/- 4.71 200 SPMI-816 Milk 3/16/2009 Cs-134 3.24 10 SPMI-816 Milk 3/16/2009 Cs-137 3.38 10 SPMI-816 Milk 3/16/2009 1-131 0.31 0.04 +/- 0.17 0.5 SPMI-816 Milk 3/16/2009 1-131(G) 3.65 20 SPMI-816 Milk 3/16/2009 Sr-90 0.48 0.41 +/- 0.27 1 SPW-819 Water 3/16/2009 Co-60 3.02 10 SPW-819 Water 3/16/2009 Cs-1 34 2.25 10 SPW-819 Water 3/16/2009 Cs-137 2.03 10 SPW-819 Water 3/16/2009 1-131 0.42 -0.06 +/- 0.19 0.5 SPW-819 Water 3/16/2009 1-131(G) 3.02 20 SPW-819 Water 3/16/2009 Sr-90 1.10 -0.63 +/- 0.44 1 SPAP-902 Air Filter 3/23/2009 Gr. Beta 0.003 0.006 +/- 0.002 3.2 SPAP-904 Air Filter 3/23/2009 Cs-134 1.68 100 SPAP-904 Air Filter 3/23/2009 Cs-137 2.62 100 SPW-32709 Water 3/23/2009 Ni-63 2.84 1.37 +/- 1.75 20 SPF-821 Fish 4/7/2009 Cs-134 3.12 100 SPF-821 Fish 4/7/2009 Cs-137 3.93 100 W-40909 Water 4/9/2009 Gr. Alpha 0.40 -0.25 +/- 0.26 1 W-40909 Water 4/9/2009 Gr. Beta 0.77 -0.30 +/- 0.53 3.2 SPW-12651 Water 4/10/2009 Ra-228 0.77 0.77 +/- 0.45 2 SPW-1268 Water 4/10/2009 U-238 0.11 0.24 +/- 0.17 1 W-42809 Water 4/28/2009 Ra-226 0.04 0.09 +/- 0.04 1 SPMI-2186 Milk 5/12/2009 Sr-90 0.43 0.52 +/- 0.26 1 SPMI-2187 Milk 5/12/2009 Cs-134 3.61 10 SPMI-2187 Milk 5/12/2009 Cs-137 3.13 10 SPMI-2187 Milk 5/12/2009 1-131 0.15 -0.02 +/- 0.10 0.5 SPMI-2187 Milk 5/12/2009 1-131(G) 3.77 20 SPW-2498 Water 5/2712009 Ni-63 1.60 0.00 +/- 0.97 20 A4-1

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

SPW-3497 Water 7/15/2009 Ni-63 1.55 -0.24 +/- 0.94 20 SPW-3500 Water 7/15/2009 Tc-99 0.90 -1.71 +/- 0.53 10 SPMI-3589 Milk 7/17/2009 1-131(G) 5.75 20 SPAP-3594 Air Filter 7/17/2009 Cs-134 1.14 100 SPAP-3594 Air Filter 7/17/2009 Cs-137 2.47 100 SPF-3596 Fish 7/17/2009 Co-60 5.00 100 SPF-3596 Fish 7/17/2009 Cs-134 8.00 100 SPF-3596 Fish 7/17/2009 Cs-137 11.50 100 SPW-3598 Water 7/17/2009 H-3 148.40 0.69 +/- 73.60 200 SPW-12653 Water 8/3/2009 Ra-228 0.76 1.46 +/- 0.51 2 W-80709 Water 8/7/2009 Ra-226 0.04 0.08 +/- 0.03 1 W-81009 Water 8/10/2009 Gr. Alpha 0.44 0.08 +/- 0.31 1 W-81009 Water 8/10/2009 Gr. Beta 0.75 -0.31 +/- 0.52 3.2 W-100109 Water 10/1/2009 Ra-226 0.04 0.09 +/- 0.03 1 W-102709 Water 10/27/2009 Gr. Alpha 0.38 0.33 +/- 0.30 1 W-102709 Water 10/27/2009 Gr. Beta 0.81 -0.59 +/- 0.55 3.2 SPW-5965 Water 10/28/2009 U-238 0.15 0.09 +/- 0.13 1 SPW-12657 Water 11/6/2009 Ra-228 0.86 0.80 +/- 0.50 2 SPAP-6769 Air Filter 12/14/2009 Gr. Beta 0.003 0.010 +/- 0.002 3.2 SPAP-6773 Air Filter 12/14/2009 Cs-137 1.31 100 SPF-6775 Fish 12/14/2009 Cs-134 5.70 100 SPF-6775 Fish 12/14/2009 Cs-137 4.18 100 SPW-6777 Water 12/14/2009 Ni-63 2.29 0.25 +/- 1.38 20 SPW-6779 Water 12/14/2009 Tc-99 1.16 -0.98 +/- 0.69 10 SPMI-6781 Milk 12/14/2009 Cs-134 2.62 10 SPMI-6781 Milk 12/14/2009 Cs-137 3.29 10 SPMI-6781 Milk 12/14/2009 1-131(G) 2.65 20 SPW-6783 Water 12/14/2009 Cs-134 2.18 10 SPW-6783 Water 12/14/2009 Cs-137 2.90 10 SPW-6783 Water 12/14/2009 1-131(G) 2.30 20 a Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), 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)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance AP-7464, 7465 1/1/2009 Be-7 0.063 +/- 0.012 0.065 +/- 0.010 0.064 +/- 0.008 Pass E-20, 21 1/5/2009 K-40 1.34 +/- 0.21 1.13 +/- 0.13 1.24 +/- 0.12 Pass CF-67, 68 1/5/2009 Be-7 0.34 +/- 0.12 0.39 +/- 0.08 0.37 +/- 0.07 Pass CF-67, 68 1/5/2009 Gr. Beta 4.34 +/- 0.11 4.38 +/- 0.12 4.36 +/- 0.08 Pass CF-67, 68 1/5/2009 K-40 3.16 +/- 0.26 3.00 +/- 0.16 3.08 +/- 0.15 Pass DW-90010, 90011 1/9/2009 Ra-226 2.97 +/- 0.22 2.76 +/- 0.21 2.87 +/- 0.15 Pass DW-90010, 90011 1/9/2009 Ra-228 3.13 +/- 0.71 3.55 +/- 0.81 3.34 +/- 0.54 Pass SG-198, 199 1/23/2009 Gr. Alpha 101.90 +/- 6.50 101.70 +/- 6.10 101.80 +/- 4.46 Pass SG-198, 199 1/23/2009 Gr. Beta 97.80 +/- 3.50 94.00 +/- 3.20 95.90 +/- 2.37 Pass SW-308, 309 1/27/2009 Gr. Beta 1.43 +/- 0.58 1.41 +/- 0.54 1.42 +/- 0.40 Pass LW-330, 331 1/27/2009 Gr. Beta 2.09 +/- 0.58 2.33 +/- 0.63 2.21 +/- 0.43 Pass SW-308, 309 1/29/2009 Gr. Beta 1.51 +/- 0.56 1.61 +/- 0.57 1.56 +/- 0.40 Pass DW-375, 376 2/4/2009 Gr. Beta 2.72 +/- 0.65 3.06 +/- 0.69 2.89 +/- 0.47 Pass SWU-606, 607 2/24/2009 Gr. Beta 2.66 +/- 0.68 2.16 +/- 0.67 2.41 +/- 0.48 Pass U-651, 652 2/27/2009 Beta-K40 3.90 +/- 2.30 1.70 +/- 2.50 2.80 +/- 1.70 Pass U-651, 652 2/27/2009 H-3 597.00 +/- 292.00 507.00 +/- 288.00 552.00 +/- 205.07 Pass SG-739, 740 3/2/2009 Ra-226 8.20 +/- 0.20 8.30 +/- 0.20 8.25 +/- 0.14 Pass MI-875, 876 3/17/2009 K-40 1286.50 +/- 111.60 1471.70 +/- 111.50 1379.10 +/- 78.88 Pass MI-875, 876 3/17/2009 Sr-90 0.67 +/- 0.31 0.36 +/- 0.36 0.52 +/- 0.24 Pass WW-970, 971 3/24/2009 Gr. Beta 13.59 +/- 2.32 17.33 +/- 2.69 15.46 +/- 1.78 Pass XWW-980, 981 3/24/2009 H-3 7143.00 +/- 262.00 7262.00 +/- 264.00 7202.50 +/- 185.97 Pass AP-1441, 1442 3/30/2009 Be-7 0.076 +/- 0.012 0.075 +/- 0.014 0.076 +/- 0.009 Pass SWT- 1123, 1124 3/31/2009 Gr. Beta 1.40 +/- 0.55 1.86 +/- 0.62 1.63 +/- 0.41 Pass WW-1102, 1103 4/11/2009 Gr. Beta 2.13 +/- 1.34 2.30 +/- 1.32 2.22 +/- 0.94 Pass XWW-1174,1175 4/1/2009 H-3 2814 +/- 176 2787 +/- 176 2801 +/- 124 Pass AP-1462, 1463 4/2/2009 Be-7 0.085 +/- 0.014 0.10 +/- 0.016 0.091 +/- 0.011 Pass SL-2024, 2025 5/4/2009 Be-7 0.80 +/- 0.18 0.82 +/- 0.13 0.81 +/- 0.11 Pass SL-2024, 2025 5/4/2009 Gr. Beta 2.41 +/- 0.19 2.68 +/- 0.21 2.55 +/- 0.14 Pass SL-2024, 2025 5/4/2009 K-40 1.20 +/- 0.21 1.30 +/- 0.15 1.25 +/- 0:13 Pass SO-2045, 2046 5/4/2009 Gr. Alpha 6.22 +/- 2.87 6.50 +/- 3.26 6.36 +/- 2.17 Pass SO-2045, 2046 5/4/2009 Gr. Beta 28.85 +/- 3.15 30.39 +/- 3.34 29.62 +/- 2.30 Pass SO-2045, 2046 5/4/2009 Sr-90 0.036 +/- 0.010 0.024 +/- 0.010 0.030 +/- 0.007 Pass mi-2251, 2252 5/14/2009 K-40 1220.60 +/- 155.10 1455.50 +/- 118.20 1338.05 +/- 97.50 Pass mi-2381, 2382 5/19/2009 K-40 1472.50 +/- 122.90 1412.80 +/- 117.40 1442.65 +/- 84.98 Pass SWT-2534, 2535 5/26/2009 Gr. Beta 1.12 +/- 0.57 1.66 +/- 0.58 1.39 +/- 0.41 Pass G-2626,2627 5/28/2009 Gr. Beta 6.32 +/- 0.19 6.18 +/- 0.19 6.25 +/- 0.13 Pass G-2626,2627 5/28/2009 K-40 4.13 +/- 0.35 4.05 +/- 0.34 4.09 +/- 0.24 Pass WW-2732,2733 6/1/2009 H-3. 240.73 +/- 93.21 190.39 +/- 90.81 215.56 +/- 65.07 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 SO-3141, 3142 6/22/2009 Ac-228 1.07 +/- 0.06 1.06 +/- 0.05 1.07 +/- 0.04 Pass SO-3141, 3142 6/22/2009 Be-7 0.55 +/- 0.14 0.62 +/- 0.08 0.59 +/- 0.08 Pass SO-3141, 3142 6/22/2009 Bi-212 1.16 +/- 0.17 1.14 +/- 0.16 1.15 +/- 0.12 Pass SO-3141, 3142 6/22/2009 Bi-214 0.96 +/- 0.03 1.01 +/- 0.03 0.99 +/- 0.02 Pass SO-3141, 3142 6/22/2009 Cs-137 0.72 +/- 0.07 0.76 +/- 0.08 0.74 +/- 0.05 Pass SO-3141, 3142 6/22/2009 Pb-212 1.00 +/- 0.02 1.03 +/- 0.02 1.02 +/- 0.01 Pass SO-3141, 3142 6/22/2009 Pb-214 1.01 +/- 0.03 1.04 +/- 0.03 1.03 +/- 0.02 Pass SO-3141, 3142 6/22/2009 Pu-239/40 0.022 +/- 0.008 0.030 +/- 0.009 0.026 +/- 0.006 Pass SO-3141, 3142 6/22/2009 Th-232 0.51 +/- 0.04 0.48 +/- 0.05 0.50 +/- 0.03 Pass SO-3141, 3142 6/22/2009 TI-208 0.35 +/- 0.02 0.36 +/- 0.02 0.36 +/- 0.01 Pass SO-3141, 3142 6/22/2009 U-233/4 0.16 +/- 0.02 0.18 + 0.02 0.17 +/- 0.01 Pass SO-3141, 3142 6/22/2009 U-238 0.14 +/- 0.02 0.18 +/- 0.03 0.16 +/- 0.02 Pass SG-3187, 3188 6/25/2009 Ac-228 11.07 +/- 0.33 10.88 +/- 0.33 10.97 +/- 0.24 Pass SG-3187, 3188 6/25/2009 Pb-214 26.54 +/- 0.23 26.17 +/- 0.25 26.36 +/- 0.17 Pass SL-3297, 3298 7/1/2009 Be-7 1.15 +/- 0.13 1.15 +/-0.12 1.15 +/- 0.09 Pass SL-3297, 3298 7/1/2009 Gr. Beta 3.38 +/- 0.23 3.37 +/- 0.12 3.38 +/- 0.13 Pass SL-3297, 3298 7/1/2009 K-40 1.43 +/- 0.18 1.50 +/- 0.19 1.47 +/- 0.13 Pass AP-3944, 3945 7/1/2009 Be-7 0.064 +/- 0.009 0.068 +/- 0.010 0.066 +/- 0.007 Pass DW-90222, 90223 7/15/2009 Ra-226 5.36 +/- 0.60 4.62 +/- 0.51 4.99 +/- 0.39 Pass DW-90222, 90223 7/15/2009 Ra-228 2.91 +/- 0.73 2.80 +/- 0.70 2.86 +/- 0.51 Pass DW-90237, 90238 7/17/2009 Gr. Alpha 3.54 +/- 0.99 4.22 +/- 1.09 3.88 +/- 0.74 Pass F-3790, 3791 7/21/2009 K-40 1.10 +/- 0.35 1.41 +/-0.44 1.26 +/- 0.28 Pass DW-90250, 90251 7/22/2009 Ra-226 14.58 +/- 0.39 15.13 + 0.40 14.86 +/- 0.28 Pass DW-90250, 90251 7/22/2009 Ra-228 6.71 +/- 1.05 6.10 +/- 1.01 6.41 +/- 0.73 Pass VE-3965, 3966 7/28/2009 K-40 1.48 +/- 0.16 1.56 +/- 0.19 1.52 +/- 0.13 Pass VE-4098, 4099 8/3/2009 Be-7 0.54 +/- 0.16 0.58 +/- 0.16 0.56 +/- 0.11 Pass VE-4098, 4099 8/3/2009 Gr. Beta 5.15 +/- 0.17 5.07 +/- 0.18 5.11 +/- 0.12 Pass VE-4098, 4099 8/3/2009 K-40 4.91 +/- 0.49 5.17 +/-0.15 5.04 +/- 0.26 Pass SO-4325, 4326 8/14/2009 Be-7 0.59 +/- 0.21 0.68 +/- 0.28 0.64 +/- 0.18 Pass SO-4325, 4326 8/14/2009 Cs-137 0.29 +/- 0.05 0.28 +/- 0.05 0.28 +/- 0.03 Pass SO-4325, 4326 8/14/2009 K-40 13.41 +/- 0.77 13.46 +/- 0.80 13.43 +/- 0.56 Pass SG-4283, 4284 8/17/2009 Ac-228 7.16 +/- 0.28 7.10 +/- 0.26 7.13 +/- 0.19 Pass SG-4283, 4284 8/17/2009 Pb-214 6.27 +/- 0.13 6.21 +/- 0.13 6.24 +/- 0.09 Pass VE-4436, 4437 8/25/2009 K-40 2.28 +/- 0.28 2.67 +/- 0.26 2.48 +/- 0.19 Pass SL-4589, 4590 9/1/2009 Be-7 1.25 +/- 0.22 1.25 +/- 0.16 1.25 +/- 0.14 Pass SL-4589, 4590 9/1/2009 K-40 2.96 +/- 0.30 2.70 +/- 0.27 2.83 +/- 0.20 Pass AV-4882, 4883 9/8/2009 Be-7 0.93 +/- 0.18 0.95 +/- 0.17 0.94 +/- 0.12 Pass AV-4882, 4883 9/8/2009 K-40 2.50 +/- 0.26 2.47 +/- 0.29 2.49 +/- 0.20 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 Pass WW-4721, 4722 9/9/2009 H-3 19191.00 +/- 404.00 18677.00 +/- 399.00 18934.00 +/- 283.91 Pass WW-4903,4904 9/11/2009 H-3 1075.00 +/- 130.00 1281.00 +/- 136.00 1178.00 +/- 94.07 Pass BS-5119, 5120 9/16/2009 Be-7 2067.50 +/- 327.90 2225.40 +/- 371.10 2146.45 +/- 247.61 Pass BS-5119, 5120 9/16/2009 Cs-137 86.24 +/- 35.40 145.10 +/- 31.54 115.67 +/- 23.71 Pass BS-5119, 5120 9/16/2009 K-40 16.85 +/- 0.90 17.27 +/- 0.79 17.06 +/- 0.60 Pass SS-5188, 5189 9/23/2009 Be-7 1.02 +/- 0.31 1.04 +/- 0.43 1.03 +/- 0.26 Pass SS-5188, 5189 9/23/2009 K-40 10.21 +/- 0.65 9.94 +/- 0.93 10.07 +/- 0.57 Pass AP-3944, 3945 9/29/2009 Be-7 0.09 ++/-0.02 0.09 +/- 0.02 0.09 +/- 0.01 Pass E-5251, 5252 10/1/2009 Gr. Beta 2.30 +/- 0.10 2.10 +/- 0.10 2.20 +/- 0.07 Pass E-5251, 5252 10/1/2009 K-40 1.18 +/- 0.24 1.15 +/- 0.18 1.17 +/- 0.15 Pass G-5272, 5273 10/1/2009 Be-7 3.31 +/- 0.29 3.60 +/- 0.26 3.46 +/- 0.19 Pass G-5272, 5273 10/1/2009 Gr. Alpha 19.81 +/- 0.80 21.10 +/- 0.74 20.46 +/- 0.54 Pass G-5272,5273 10/1/2009 K-40 16.47 +/- 0.75 17.00 +/- 0.74 16.74 +/- 0.53 Pass F-5690, 5691 10/15/2009 H-3 8895.00 +/- 250.00 9051.00 +/- 252.00 8973.00 +/- 177.49 Pass F-5690, 5691 10/15/2009 K-40 3.62 +/- 0.40 3.09 +/- 0.48 3.36 +/- 0.31 Pass DW-90396,90397 10/16/2009 Ra-226 0.54 +/- 0.09 0.42 +/- 0.08 0.48 +/- 0.06 Pass DW-90396,90397 10/16/2009 Ra-228 1.44 +/- 0.56 0.94 +/- 0.51 1.19 +/- 0.38 Pass DW-90408, 90409 10/19/2009 Ra-226 0.99 +/- 0.12 1.10-+/- 0.14 1.05 +/- 0.09 Pass DW-90408,90409 10/19/2009 Ra-228 2.76 +/- 0.66 1.38 +/- 0.92 2.07 +/- 0.57 Pass DW-90420,90421 10/21/2009 Ra-226 1.95 +/- 0.17 1.77 +/- 0.15 1.86 +/- 0.11 Pass DW-90420,90421 10/21/2009 Ra-228 3.10 +/- 0.73 3.32 +/- 0.80 3.21 +/- 0.54 Pass SG-5962,5963 10/22/2009 Ac-228 16.39 +/- 0.79 16.51 +/- 0.63 16.45 +/- 0.51 Pass SG-5962, 5963 10/22/2009 Pb-214 18.03 +/- 0.41 17.74 +/- 0.42 17.89 +/- 0.29 Pass DW-90423,90424 10/27/2009 Gr. Alpha 12.04 +/- 1.68 15.28 +/- 1.97 13.66 +/- 1.29 Pass ME-6116, 6117 11/3/2009 Gr. Beta 0.86 +/- 0.03 0.83 +/- 0.03 0.85 +/- 0.02 Pass ME-6116, 6117 11/3/2009 K-40 2.57 +/- 0.08 2.65 +/- 0.08 2.61 +/- 0.06 Pass F-6567, 6568 11/6/2009 Gr. Beta 2.72 +/- 1.05 3.04 +/- 0.92 2.88 +/- 0.70 Pass F-6567, 6568 11/6/2009 Sr-90 0.09 +/- 0.03 0.12 +/- 0.04 0.11 +/- 0.02 Pass W-6495,6496 11/8/2009 H-3 2638.00 +/- 173.00 2451.00 +/- 168.00 2544.50 +/- 120.57 Pass WW-6313, 6314 11/9/2009 H-3 1514.00 +/- 137.00 1483.00 +/- 136.00 1498.50 +/- 96.52 Pass SWU-6611, 6612 11/24/2009 Gr. Beta 1.88 +/- 0.60 1.67 +/- 0.59 1.78 +/- 0.42 Pass DW-90446,90447 12/30/2009 Ra-226 0.30 +/- 0.10 0.54 +/- 0.14 0.42 +/- 0.09 Pass DW-90446,90447 12/30/2009 Ra-228 2.60 +/- 0.64 2.65 + 0.65 2.63 +/- 0.46 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).

A5-3

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 STW-1170' 01/01/09 Am-241 1.15 +/- 0.06 0.64 0.45 - 0.83 Fail STW-1 170 01/01/09 Co-57 19.60 +/- 0.40 18.90 13.20 - 24.60 Pass STW-1 170 01/01/09 Co-60 16.60 +/- 0.30 17.21 12.05 - 22.37 Pass STW-1 170 01/01/09 Cs-134 20.40 +/- 0.50 22.50 15.80 - 29.30 Pass STW-1170 e 01/01/09 Cs-137 0.10 +/- 0.20 0.00 0.00 - 1.00 Pass STW-1170 01/01/09 Fe-55 51.60 +/- 20.60 48.20 33.70 - 62.70 Pass STW-1170 01/01/09 H-3 359.90 +/- 33.90 330.90 231.60 - 430.20 Pass STW-1170 01/01/09 Mn-54 15.00 +/- 0.40 14.66 10.26 - 19.06 Pass STW-1 170 01/01/09 Ni-63 50.50 +/- 3.25 53.50 37.45 - 69.55 Pass STW-1 170 01/01/09 Pu-238 1.17 +/- 0.04 1.18 0.83 - 1.53 Pass STW-1 170 01/01/09 Pu-239/40 0.74 +/- 0.03 0.85 0.60-1.11 Pass STW-1 170 01/01/09 Sr-90 7.87 +/- 1.39 7.21 5.05 - 9.37 Pass STW-1170 01/01/09 Tc-99 12.70 +/- 0.80 14.46 10.12 - 18.80 Pass STW-1170 .01/01/09 U-233/4 2.78 +/- 0.07 2.77 1.94-3.60 Pass STW-1170 01/01/09 U-238 2.87 +/- 0.07 2.88 2.02 - 3.74 Pass STW-1 170 01/01/09 Zn-65 14.00 +/- 0.70 13.60 9.50 - 17.70 Pass STW-1171 01/01/09 Gr. Alpha 0.56 +/- 0.06 0.64 0.00 - 1.27 Pass STW-1171 01/01/09 Gr. Beta 1.29 +/- 0.05 1.27 0.64-1.91 Pass STSO-1172 e 01/01/09 Co-57 0.00 +/- 0.00 0.00 0.00-1.00 Pass STSO-1 172 01/01/09 Cs-1 34 458.60 +/- 7.40 467.00 327.00 - 607.00 Pass STSO-1 172 01/01/09 Cs-137 652.30 +/- 3.50 605.00 424.00 - 787.00 Pass STSO-1 172 01/01/09 K-40 636.40 +/- 9.50 570.00 360.40 - 669.40 Pass STSO-1 172 01/01/09 Mn-54 346.40 +/- 3.10 307.00 215.00 -399.00 Pass STSO-1 172 01/01/09 Pu-238 28.60 +/- 2.20 25.30 17.70 - 32.90 Pass STSO-1172 e 01/01/09 Pu-239/40 0.50 +/- 0.40 0.00 0.00 -1.00 Pass STSO-1 172 01/01/09 Sr-90 180.60 +/- 12.10 257.00 180.00 - 334.00 Pass STSO-1 172 01/01/09 U-233/4 152.20 +/- 4.30 149.00 104.00 - 194.00 Pass STSO-1 172 01/01/09 U-238 154.90 +/- 4.40 155.00 109.00 - 202.00 Pass STSO-1172 01/01/09 Zn-65 268.30 +/- 4.00 242.00 169.00 - 315.00 Pass STVE-1173 01/01/09 Co-57 2.75 +/- 0.11 2.36 1.65 -3.07 Pass STVE-1 173 e 01/01/09 Co-60 0.06 +/- 0.09 0.00 0.00 - 1.00 Pass STVE-1 173 01/01/09 Cs-1 34 3.49 +/- 0.22 3.40 2.38 - 4.42 Pass STVE-1 173 01/01/09 Cs-137 1.01 +/- 0.11 0.93 0.65 -1.21 Pass STVE-1 173 01/01/09 Mn-54 2.52 +/- 0.14 2.30 1.61 -2.99 Pass STVE-1 173 01/01/09 Zn-65 1.52 +/- 0.18 1.35 0.95 - 1.76 Pass A6-1

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-1 1749 01/01/09 Am-241 0.29 +/- 0.03 0.21 0.14 -0.27 Fail STAP-1 174 01/01/09 Co-57 1.25 +/- 0.05 1.30 0.91 -1.69 Pass STAP-1 174 01/01/09 Co-60 1.17 +/- 0.06 1.22 0.85 - 1.59 Pass STAP-1 174 01/01/09 Cs-1 34 2.67 +/- 0.14 2.93 2.05 - 3.81 Pass STAP-1 174 01/01/09 Cs-137 1.53 +/- 0.08 1.52 1.06 - 1.98 Pass STAP-1 174 01/01/09 Mn-54 2.34 +/- 0.09 2.27 1.59 -2.95 Pass STAP-1174 h 01/01/09 Sr-90 0.93 +/- 0.14 0.64 0.45 - 0.83 Fail STAP-1 174 01/01/09 Zn-65 1.44 +/- 0.14 1.36 0.95 -1.77 Pass STAP-1175 01/01/09 Gr. Alpha 0.22 +/- 0.03 0.35 0.00 - 0.70 Pass STAP-1175 01/01/09 Gr. Beta 0.36 +/- 0.04 0.28 0.14 -0.42 Pass STSO-1 188 07/01/09 Co-57 674.60 +/- 9.00 586.00 410.00 -762.00 Pass STSO-1 188 07/01/09 Co-60 356.40 +/- 6.30 327.00 229.00 -425.00 Pass STSO-1 188 07/01/09 Cs-134 0.20 +/- 1.90 0.00 0.00 -1.00 Pass STSO-1 188 07/01/09 Cs-137 767.50 +/- 12.00 669.00 468.00 -870.00 Pass STSO-1188 07/01/09 K-40 433.00 +/- 37.20 375.00 263.00 -488.00 Pass STSO-1 188 07/01/09 Mn-54 931.60 +/- 14.10 796.00 557.00 -1035.00 Pass STSO-1 188 07/01/09 Pu-238 53.10 +/- 9.00 63.20 44.20 -82.20 Pass STSO-1188 07/01/09 Pu-239/40 107.10 +/- 12.60 116.30 81.40 - 151.20 Pass STSO-11188 07/01/09 Sr-90 310.50 +/- 12.20 455.00 319.00 -592.00 Fail STSO-1 188 07/01/09 U-233/4 188.20 +/- 11.90 209.00 146.00 -272.00 Pass STSO-1 188 07/01/09 U-238 197.40 +/- 12.20 217.00 152.00 -282.00 Pass STSO-1 188 07/01/09 Zn-65 1433.90 +/- 25.20 1178.00 825.00 -1531.00 Pass STAP-1189 07/01/09 Gr. Alpha 0.33 +/- 0.04 0.66 0.00 - 1.32 Pass STAP-1189 07/01/09 Gr. Beta 1.57 +/- 0.07 1.32 0.66 -1.98 Pass STAP-1 190 07/01/09 Am-241 0.01 +/- 0.02 0.00 0.01 - 0.05 Pass STAP-1 190 07/01/09 Co-57 6.78 +/- 0.27 6.48 4.54 - 8.42 Pass STAP-1190 07/01/09 Co-60 1.06 +/- 0.18 1.03 0.72 -1.34 Pass STAP-1 190 07/01/09 Cs-134 0.01 +/- 0.06 0.00 0.01 - 0.05 Pass STAP-1 190 07/01/09 Cs-137 1.49 +/- 0.27 1.40 0.98 - 1.82 Pass STAP- 1190 07/01/09 Mn-54 6.00 +/- 0.45 5.49 3.84 - 7.14 Pass STAP-1 190 07/01/09 Sr-90 0.79 +/- 0.13 0.84 0.59 - 1.09 Pass STAP-1 190 07/01/09 Zn-65 4.55 +/- 0.66 3.93 2.75 -5.11 Pass STVE-1 190 07/01/09 Co-57 8.90 +/- 0.60 8.00 .5.60 - 10.40 Pass STVE-1 190 07/01/09 Co-60 2.50 +/- 0.36 2.57 1.80 -3.34 Pass STVE-1 190 07/01/09 Cs-134 0.01 +/- 0.11 0.00 0.00 -0.10 Pass STVE-1 190 07/01/09 Cs-137 2.42 +/- 0.16 2.43 1.70 -3.16 Pass STVE-1 190 07/01/09 Mn-54 8.35 +/- 0.70 7.90 5.50 - 10.30 Pass STVE-1 190 07/01/09 Zn-65 0.01 +/- 0.26 0.00 0.00 -0.10 Pass A6-2

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

b Concentration Known Control Lab Code Date Analysis Laboratory result Activity Limits d Acceptance STW-1191 07/01/09 Gr. Alpha 0.88 +/- 0.07 1.05 0.00 -2.09 Pass STW-1191 07/01/09 Gr. Beta 7.29 +/-0.10 7.53 3.77 -11.30 Pass STW-1192 07/01/09 Am-241 0.88 +/- 0.08 1.04 0.73-1.35 Pass STW-1 192 07/01/09 Co-57 37.20 +/- 1.50 36.60 25.60 - 47.60 Pass STW-1192 07/01/09 Co-60 15.10 +/- 0.90 15.40 10.80 - 20.00 Pass STW-1192 07101109 Cs-134 30.30 +/- 2.10 32.20 22.50 - 41.90 Pass STW-1192 07/01/09 Cs-137 41.90 +/- 1.80 41.20 28.80 - 53.60 Pass STW-1192 .07/01/09 Fe-55 54.50 +/- 15.50 60.80 42.60 - 79.00 Pass STW-1 192 07/01/09 H-3 680.30 +/- 33.60 634.10 443.90 - 824.30 Pass STW-1192 e 07/01/09 Mn-54 0.01 +/- 0.26 0.00 0.00 - 1.00 Pass STW-1 192 07/01/09 Ni-63 38.70 +/- 2.60 44.20 30.90 - 57.50 Pass STW-1192 07/01/09 Pu-238 0.02 +/- 0.01 0.02 0.00 -0.05 Pass STW-1192 07/01/09 Pu-239/40 1.70 +/- 0.10 1.64 1.15 -2.13 Pass STW-1192 07/01/09 Sr-90 12.90 +/- 1.70 12.99 9.09-16.89 Pass STW-1192 07/01/09 Tc-99 7.60 +/- 0.40 10.00 7.00 - 13.00 Pass STW-1192 07/01/09 Tc-99 7.60 +/- 0.40 10.00 7.00-13.00 Pass STW-1192 07/01/09 U-233/4 2.90 +/- 0.10 2.96 2.07 -3.85 Pass STW-1192 07/01/09 U-238 3.00 +/- 0.10 3.03 2.12 -3.94 Pass STW-1192 07/01/09 Zn-65. 28.50 +/- 2.40 26.90 18.80 - 35.00 Pass 8 Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

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

e Included in the testing series as a "false positive".

f No errors were found in procedure or calculation. There was not enough sample for a reanalysis. Americium-241 in water was included in the ERA studies (Tbl. A-7) and also in the second round of MAPEP testing. Both analysis results were acceptable.

9One determination was eliminated from the average, due to poor recovery. Average of three determinations, 0.25 +/- 0.03 pCi/filter.

h No reason was determined for the initial high results. The analysis was repeated; result of reanalysis; 0.54 +/- 0.12 Bq/filter.

Incomplete separation of strontium from calcium could result in a higher recovery percentage and consequently lower reported activity. The analysis was repeated; result of reanalysis 363.3 +/- 28.6 Bq/kg.

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-1 176 03/23/09 Am-241 47.20 +/- 3.10 55.4 32.4 - 76.0 Pass STAP-1 176 03/23/09 Co-60 543.60 +/- 8.90 490.0 379.0 - 612.0 Pass STAP-1 176 03/23/09 Cs-134 941.30 +/- 30.70 865.0 563.0 - 1070.0 Pass STAP-1 176 03/23/09 Cs-137 850.60 +/- 19.40 724.0 544.0 - 951.0 Pass STAP-1176 e 03/23/09 Mn-54 0.00 +/- 0.00 0.0 0.0 - 0.0 Pass STAP-1176 03/23/09 Pu-238 64.50 +/- 3.60 57.4 39.4 - 75.5 Pass STAP-1 176 03/23/09 Pu-239/40 88.50 +/- 4.20 78.2 56.7 - 101.0 Pass STAP-1 176 03/23/09 Sr-90 93.90 +/- 10.00 95.3 41.9 -148.0 Pass STAP-1 176 03/23/09 U-233/4 50.00 +/- 2.47 53.5 33.7 - 79.3 Pass STAP-1 176 03/23/09 U-238 50.40 +/- 2.48 53.1 34.0 - 75.4 Pass STAP-1 176 03/23/09 Uranium 101.60 +/- 5.30 109.0 55.7 - 173.0 Pass STAP-1 176 03/23/09 Zn-65 237.30 +/- 23.70 185.0 128.0 - 256.0 Pass STAP-1177 03/23/09 Gr. Alpha 76.30 +/- 3.47 63.8 33.1 -96.0 Pass STAP-1 177 03/23/09 Gr. Beta 98.50 +/- 3.04 80.7 49.7 -118.0 Pass STSO-1 178 03/23/09 Ac-228 1370.00 +/- 121.00 1330.0 860.0 - 1880.0 Pass STSO-1178 03/23/09 Am-241 1853.00 +/- 185.50 1660.0 992.0 - 2130.0 Pass STSO-1 178 03/23/09 Bi-212 1449.00 +/- 308.80 1550.0 406.0 - 2310.0 Pass STSO-1 178 03/23/09 Bi-214 1355.00 +/- 66.20 1420.0 872.0 -2050.0 Pass STSO-1 178 03/23/09 Co-60 7475.00 +/- 46.40 7520.0 5470.0 -10100.0 Pass STSO-1 178 03/23/09 Cs-134 5073.00 +/- 74.70 5170.0 3330.0 - 6220.0 Pass STSO-1 178 03/23/09 Cs-1 37 5040.00 +/- 49.70 4970.0 3800.0 - 6460.0 Pass STSO-1178 03/23/09 K-40 10884.00 +/- 292.70 11200.0 8060.0 -15100.0 Pass STSO-1 178 03/23/09 Mn-54 0.00 +/- 0.00 0.0 0.0 -20.0 Pass STSO-1 178 03/23/09 Pb-212 1259.00 +/- 28.40 1260.0 820.0 - 1780.0 Pass STSO-1 178 03/23/09 Pb-214 1464.00 +/- 56.80 1510.0 902.0 - 2260.0 Pass STSO-1178 03/23/09 Pu-238 1853.00 +/- 185.50 1590.0 910.0 -2240.0 Pass STSO-1 178 03/23/09 Pu-239/40 1516.50 +/- 168.30 1360.0 928.0 - 1800.0 Pass STSO-1 178 03/23/09 Sr-90 5270.90 +/- 290.20 5750.0 2080.0 - 9380.0 Pass STSO-1 178 03/23/09 U-233/4 1452.30 +/- 114.40 1600.0 1010.0 - 1990.0 Pass STSO-1 178 03/23/09 Uranium 3013.70 +/- 131.10 3270.0 1860.0 -4410.0 Pass STSO-1 178 03/23/09 Zn-65 2083.00 +/- 59.00 1940.0 1540.0 - 2600.0 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-1179 03/23/09 Am-241 2849.70 +/- 237.60 3660.0 2090.0 - 5030.0 Pass STVE-1 179 03/23/09 Cm-244 808.00 +/- 85.70 954.0 470.0 - 1480.0 Pass STVE-1 179 03/23/09 Co-60 1546.80 +/- 31.60 1710.0 1160.0 -2460.0 Pass STVE-1 179 03123/09 Cs-134 1706.00 +/- 59.20 1880.0 1080.0 -2600.0 Pass STVE-1179 03/23/09 Cs-137 1940.50 +/- 44.80 1800.0 1320.0 - 2500.0 Pass STVE-1179 03/23/09 K-40 30107.30 +/- 598.00 30800.0 22300.0 - 43700.0 Pass STVE-1179 03/23/09 Mn-54 0.00 +/- 0.00 0.0 0.0 - 0.0 Pass STVE-1 179 03/23/09 Sr-90 6604.80 +/- 440.10 8860.0 4950.0 -11800.0 Pass STVE-1 179 03/23/09 U-233/4 1718.00 +/- 128.90 2040.0 1400.0 -2710.0 Pass STVE-1179 03/23/09 U-238 1718.30 +/- 128.80 2020.0 1420.0 - 2550.0 Pass STVE-1 179 03/23/09 Uranium 3499.40 +/- 371.00 4150.0 2850.0 - 5360.0 Pass STVE-1179 03/23/09 Zn-65 869.40 +/- 63.60 878.0 634.0 - 1200.0 Pass P

STW-1180 03/23/09 Am-241 127.50 +/- 5.10 132.0 90.4 - 178.0 Pass STW-1 180 03/23/09 Co-60 1174.10 +/- 11.70 1230.0 1070.0 - 1450.0 Pass STW-1 180 03/23/09 Cs-134 742.20 +/- 18.30 790.0 584.0 - 907.0 Pass STW-1 180 03/23/09 Cs-137 887.50 +/- 14.00 913.0 776.0 - 1090.0 Pass STW-1 180 03/23/09 Fe-55 323.00 +/- 362.00 492.0 286.0 - 657.0 Pass STW-1 180 03/23/09 Mn-54 0.00 +/- 0.00 0.0 0.0 - 0.0 Pass STW-1180 03/23/09 Pu-238 96.60 +/- 2.20 108.0 81.7 -134.0 Pass STW-1 180 03/23/09 Pu-239/40 89.50 +/- 2.10 86.3 66.8 - 107.0 Pass STW-1 180 03/23/09 Sr-90 763.20 +/- 12.90 834.0 530.0 - 1120.0 Pass STW-1 180 03/23/09 U-233/4 95.00 +/- 1.80 96.6 72.8 - 124.0 Pass STW-1 180 03/23/09 U-238 97.40 +/- 1.80 95.8 73.2 -119.0 Pass STW-1 180 03/23/09 Uranium 195.50 +/- 3.70 197.0 142.0 -262.0 Pass STW-1 180 03/23/09 Zn-65 653.10 +/- 24.10 631.0 535.0 - 786.0 Pass 8 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).

' 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.

e Included in the testing series as a "false positive". No activity expected.

The analysis was repeated by leaching and total dissolution methods. Total dissolution yielded results within expected range.

Results of the reanalysis: U-233,4, 1655 +/- 95 pCi/kg. U-238 1805 +/- 97 pCi/kg.

A7-2

Appendix B Summary Tables in the format of NRC Radiological Assessment Branch Technical Position Revision 1, November 1979 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 2009 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 (318) 0.01 0.031 (265/265) 32 0.032(52/52) 0.031 (53/53) 0 (0.011 - 0.053) 3.1 miles WNW (0.013 - 0.053) (0.013 - 0.051)

Gamma (24)

Be-7 - 0.093 (20/20) 37 0.098 (4/4) 0.097 (4/4) 0 (0.060 - 0.122) 2.0 miles NNW (0.064 - 0.122) (0.073 - 0.108) 1-131 (318) 0.07 - (0/265) N/A N/A - (0/53) 0 External Stations 39, 48 &

Radiation 53 (mR/day) Dosimeters (352) 0.132 (328/328) 47 0.194 (8/8) 0.132 (24/24) 0 (0.055 - 0.271) 0.16 miles S (0.145 - 0.271) (0.098 - 0.180)

Surface Water JRR (pCi/I) Gamma (24) -(0/12) N/A N/A -(0/12) 0 Tritium (24) 3000 11356 (12/12) SP 11356 (12/12) -(0/12) 0 (9382- 13351) 3.2 miles SSE (9382 - 13351)

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) 2000 -(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 2009 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 -(0/13) N/A N/A -(0/12) 0 (pCi/I)

Gross Beta (25) 4 3.1 (13/13) 1O-DW 3.1 (13/13) 2.9 (12/12) 0 (1.9 -4.7) 26.1 miles SSE (1.9 -4.7) (2.0-3.9)

Gamma (25) -(0/13) N/A N/A -(0/12) 0 Tritium (8) 2000 -(0/4) N/A N/A -(0/4) 0 Shoreline Gamma (4) JRR Sediment (pCi/kg dry) K-40 11484 (2/2) DC 11484 (2/2) 10463 (2/2) 0 (10073 - 12895) 0.8 miles WNW (10073 - 12895) (10205 - 10720)

Cs-1 37 180 -(012) 117.2 (2/2) 0 (108.9- 125.5)

Fish Gamma (21) JRR (pCi/kg wet)

K-40 3119 (15/15) CCL 3119 (15/15) 3008 (6/6) 0 (2331 - 3615) 0.6 miles (2331 -3615) (2650 - 3443)

Tritium (21) 7764 (15/15) CCL 7764 (15/15) -(0/6) 0 (6681 - 9550) 0.6 miles (6681 - 9550)

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 2009 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 (20) D-2 Garden (pCi/kg wet) Be-7 1105 (13/13) H-2 1721 (2/2) 1242 (7/7) 0 (471 -1899) 3.0 miles SSE (1543- 1899) (679- 2697)

K-40 4976 (13/13) Q-6 5933 (6/6) 6159 (7/7) 0 (2887 - 7468) 2.4 miles NW (4739 - 7468) (5159 - 7742)

NR-U1 Crops Gamma (5)

(pCi/kg wet)

K-40 9794 (3/3) NR-D1 12979 (1/1) 7266 (2/2) 0 (2945 -13457) 8.9 miles S (2597 - 11934)

Bottom Gamma (8) JRR Sediment (pCi/kg dry)

K-40 11766 (6/6) DC 13433 (2/2) 15894 (2/2) 0 (9826 - 13568) 0.8 miles WNW (13297 - 13568) (14224 -17563)

Co-60 57.9 (1/6) DC 57.9 (1/2) - (0/2) 0 0.8 miles WNW Cs-1 37 101.0 (5/6) DC 147.5 (2/2) 138.0 (1/2) 0 (51.3 - 169.4) 0.8 miles WNW (125.5 - 169.4)

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 Repc rting Period: Annual 2009 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 (4) No Control Vegetation (pCi/kg wet) Be-7 951.8 (2/4) EEA 972.2 (1/3) 0 (931.4 - 972.2) 3.0 miles NNW K-40 3238 (4/4) EEA 3483 (3/3) 0 (1419-5171) 3.0 miles NNW (1419- 5171)

Terrestrial Gamma (4) No Control Vegetation (pCi/kg wet) Be-7 1794(4/4) EEA 2530 (2/2) 0 (467 - 4593) 3.0 miles NNW (467 - 4593)

K-40 6685 (4/4) EEA 8347 (2/2) 0 (4506 - 10264) 3.0 miles NNW (6429 - 10264)

Soil Gamma (3) No Control (pCi/kg dry)

K-40 12705 (3/3) EEA 13300 (2/2) 0 (11515 - 13405) 3.0 miles NNW (13195- 13405)

Cs-1 37 345.2 (2/3) MUDS 405.1 (1/1) 0 (285.2 - 405.1) 1.5 miles WNW 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 2009 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 **

Deer Gamma (2) No Control (pCi/kg wet)

K-40 2675 (2/2) R2.5 2970(1/1) 0 (2379 -2970) 2.5 miles NNW Cs-1 37 25.1 (1/2) B13.0 25.1 (1/1) 0 1.0 miles NNE Tritium (2) 357 (2/2) B13.0 496(1/1) 0 (218 -496) 1.0 miles NNE 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 Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCilm3 3) 31-DEC-08 07-JAN-09 291 0.040 +1- 0.004 0.010 07-JAN-09 14-JAN-09 301 0.035 +1- 0.004 0.019 14-JAN-09 21-JAN-09 309 0.032 +1- 0.003 0.017 21-JAN-09 28-JAN-09 319 0.043 +1- 0.004 0.015 28-JAN-09 04-FEB-09 300 0.027 +1- 0.003 0.016 04-FEB-09 11-FEB-09 307 0.037 +1- 0.004 0.017 11-FEB-09 18-FEB-09 306 0.031 +1- 0.003 0.021 18-FEB-09 25-FEB-09 312 0.043 +1- 0.004 0.016 25-FEB-09 05-MAR-09 365 0.037 +1- 0.003 0.012 05-MAR-09 11-MAR-09 259 0.042 +1- 0.005 0.013 11-MAR-09 18-MAR-09 292 0.038 +1- 0.004 0.009 18-MAR-09 26-MAR-09 342 0.026 +1- 0.003 0.007 26-MAR-09 01-APR-09 258 0.028 +1- 0.004 0.017 01-APR-09 08-APR-09 309 0.029 +1- 0.003 0.012 08-APR-09 15-APR-09 303 0.032 +1- 0.004 0.020 15-APR-09 22-APR-09 292 0.025 +1- 0.003 0.019 15-APR-09 22-APR-09 292 0.026 +1- 0.003 Duplicate 22-APR-09 29-APR-09 301 0.026 +1- 0.003 0.026 29-APR-09 06-MAY-09 310 0.022 +1- 0.003 0.018 06-MAY-09 13-MAY-09 295 0.024 +1- 0.003 0.013 13-MAY-09 21-MAY-09 360 0.027 +1- 0.003 0.014 21-MAY-09 28-MAY-09 294 0.023 +1- 0.003 0.019 28-MAY-09 04-JUN-09 303 0.030 +1- 0.003 0.011 04-JUN-09 10-JUN-09 215 0.031 +1- 0.004 0.016 10-JUN-09 17-JUN-09 269 0.028 +1- 0.004 0.017 17-JUN-09 24-JUN-09 91 0.044 +1- 0.009 0.093 24-JUN-09 01-JUL-09 295 0.036 +1- 0.004 0.025 01-JUL-09 08-JUL-09 304 0.029 +1- 0.003 0.011 08-JUL-09 16-JUL-09 340 0.032 +1- 0.003 0.010 16-JUL-09 22-JUL-09 252 0.031 +1- 0.004 0.034 22-JUL-09 29-JUL-09 298 0.035 +1- 0.004 0.018 29-JUL-09 05-AUG-09 297 0.034 +1- 0.004 0.021 05-AUG-09 10-AUG-09 215 0.040 +1- 0.005 0.013 10-AUG-09 17-AUG-09 307 0.043 +1- 0.004 0.011 17-AUG-09 24-AUG-09 294 0.027 +1- 0.003 0.009 24-AUG-09 31-AUG-09 307 0.029 +1- 0.003 0.012 31-AUG-09 09-SEP-09 388 0.035 +1- 0.003 0.012 09-SEP-09 14-SEP-09 220 0.045 +1- 0.006 0.021 14-SEP-09 21-SEP-09 292 0.031 +1- 0.004 0.013 21-SEP-09 28-SEP-09 300 0.021 +1- 0.004 0.010 2009 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 m3 Start Date End Date Concentration Concentration Analysis (pCilm3 ) (pCilm3 )

28-SEP-09 05-OCT-09 299 0.011 +1- 0.004 0.012 05-OCT-09 12-OCT-09 293 0.029 +1- 0.004 0.012 12-OCT-09 19-OCT-09 306 0.017 +1- 0.004 0.009 19-OCT-09 26-OCT-09 295 0.019 +1- 0.004 0.011 26-OCT-09 02-NOV-09 301 0.011 +1- 0.003 0.008 02-NOV-09 09-NOV-09 299 0.030 +1- 0.004 0.012 09-NOV-09 16-NOV-09 306 0.035 0.004 0.013 16-NOV-09 25-NOV-09 377 0.034 +1- 0.004 0.012 16-NOV-09 25-NOV-09 377 0.030 +1- 0.004 Duplicate 25-NOV-09 30-NOV-09 216 0.029 +1- 0.006 0.017 30-NOV-09 07-DEC-09 323 0.025 +1- 0.004 0.013 07-DEC-09 14-DEC-09 290 0.041 +1- 0.005 0.010 14-DEC-09 21-DEC-09 302 0.049 +1- 0.005 0.011 21-DEC-09 28-DEC-09 298 0.028 +1- 0.004 0.016 28-DEC-09 04-JAN-1 0 323 0.041 +1- 0.004 0.006 2009 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 (pCi/mr3 ) (pCim 3 )

31-DEC-08 07-JAN-09 293 0.042 +1- 0.004 0.010 07-JIAN-09 14-JAN-09 295 0.033 +1- 0.004 0.020 14-JAN-09 21-JAN-09 311 0.032 +1- 0.003 0.017 21-JAN-09 28-JAN-09 309 0.041 +1- 0.004 0.015 28-JAN-09 04-FEB-09 295 0.024 +1- 0.003 0.016 04-FEB-09 11-FEB-09 296 0.034 +1- 0.004 0.018 04-FEB-09 11-FEB-09 296 0.037 +1- 0.004 0.018 Duplicate 11-FEB-09 18-FEB-09 299 0.035 +1- 0.004 0.021 18-FEB-09 25-FEB-09 316 0.042 +1- 0.004 0.016 25-FEB-09 05-MAR-09 359 0.037 +1- 0.003 0.012 25-FEB-09 05-MAR-09 359 0.036 +1- 0.003 Duplicate 05-MAR-09 11-MAR-09 255 0.035 +1- 0.004 0.013 11-MAR-09 18-MAR-09 289 0.039 +1- 0.004 0.009 18-MAR-09 26-MAR-09 347 0.026 +1- 0.003 0.007 26-MAR-09 01-APR-09 260 0.028 +1- 0.004 0.017 01-APR-09 08-APR-09 298 0.028 +1- 0.003 0.012 08-APR-09 15-APR-09 303 0.027 +1- 0.003 0.020 08-APR-09 15-APR-09 303 0.028 +1- 0.003 Duplicate 15-APR-09 22-APR-09 291 0.028 +1- 0.003 0.019 22-APR-09 29-APR-09 302 0.025 +1- 0.003 0.026 29-APR-09 06-MAY-09 299 0.027 +1- 0.003 0.019 06-MAY-09 13-MAY-09 299 0.025 +1- 0.003 0.012 13-MAY-09 21 -MAY-09 353 0.024 +1- 0.003 0.014 21-MAY-09 28-MAY-09 296 0.024 +1- 0.003 0.019 28-MAY-09 04-JUN-09 298 0.039 +1- 0.004 0.011 04-JUN-09 10-JUN-09 214 0.034 +1- 0.005 0.017 10-JUN-09 17-JUN-09 287 0.025 +1- 0.003 0.016 17-JUN-09 24-JUN-09 300 0.023 +1- 0.003 0.029 24-JUN-09 01-JUL-09 296 0.036 +1- 0.004 0.025 01-JUL-09 08-JUL-09 122 0.048 +1- 0.007 0.028 08-JUL-09 16-JUL-09 340 0.034 +1- 0.003 0.010 16-JUL-09 22-JUL-09 265 0.030 +1- 0.004 0.031 22-JUL-09 29-JUL-09 301 0.034 +1- 0.004 0.018 29-JUL-09 05-AUG-09 300 0.032 +1- 0.004 0.020 05-AUG-09 10-AUG-09 216 0.045 +1- 0.005 0.013 10-AUG-09 17-AUG-09 308 0.039 +1- 0.004 0.011 17-AUG-09 24-AUG-09 298 0.028 +1- 0.003 0.009 24-AUG-09 31-AUG-09 303 0.029 +1- 0.003 0.012 31-AUG-09 09-SEP-09 382 0.033 +1- 0.003 0.012 09-SEP-09 14-SEP-09 222 0.045 +1- 0.006 0.020 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 3

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

09-SEP-09 14-SEP-09 222 0.036 +1- 0.005 Duplicate 14-SEP-09 21-SEP-09 292 0.028 +1- 0.004 0.013 21-SEP-09 28-SEP-09 307 0.018 +1- 0.004 0.010 28-SEP-09 05-OCT-09 298 0.015 +1- 0.004 0.012 05-OCT-09 12-OCT-09 310 0.022 +1- 0.004 0.012 12-OCT-09 19-OCT-09 315 0.014 +1- 0.003 0.009 19-OCT-09 26-OCT-09 300 0.028 +1- 0.004 0.011 26-OCT-09 02-NOV-09 317 0.014 +1- 0.003 0.008 02-NOV-09 09-NOV-09 302 0.027 +1- 0.004 0.012 09-NOV-09 16-NOV-09 318 0.035 +1- 0.004 0.013 16-NOV-09 25-NOV-09 397 0.031 +1- 0.004 0.011 25-NOV-09 30-NOV-09 227 0.017 +1- 0.005 0.016 25-NOV-09 30-NOV-09 227 0.023 +1- 0.005 Duplicate 30-NOV-09 07-DEC-09 322 0.022 +1- 0.004 0.013 07-DEC-09 14-DEC-09 295 0.036 +1- 0.004 0.010 14-DEC-09 21-DEC-09 302 0.050 +1- 0.005 0.011 21-DEC-09 28-DEC-09 297 0.025 +1- 0.004 0.016 28-DEC-09 04-JAN- 10 314 0.040 +1- 0.004 0.007 2009 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 (pCilm3 ) (pCilm3 )

31-DEC-08 07-JAN-09 295 0.039 +1- 0.004 0.010 07-JAN-09 14-JAN-09 296 0.033 +1- 0.004 0.020 14-JAN-09 21-JAN-09 309 0.034 +1- 0.004 0.017 21-JAN-09 28-JAN-09 312 0.042 +1- 0.004 0.015 28-JAN-09 04-FEB-09 301 0.028 +1- 0.003 0.016 04-FEB-09 11-FEB-09 287 0.038 +1- 0.004 0.019 11-FEB-09 18-FEB-09 300 0.035 +1- 0.004 0.021 18-FEB-09 25-FEB-09 308 0.043 +1- 0.004 0.017 25-FEB-09 05-MAR-09 357 0.038 +1- 0.003 0.012 05-MAR-09 11-MAR-09 261 0.031 +1- 0.004 0.013 11-MAR-09 18-MAR-09 287 0.036 +1- 0.004 0.009 18-MAR-09

• 26-MAR-09 347 0.030 +1- 0.003 0.007 26-MAR-09 01-APR-09 263 0.027 +1- 0.004 0.017 01-APR-09 08-APR-09 302 0.033 +1- 0.004 0.012 08-APR-09 15-APR-09 303 0.035 +1- 0.004 0.020 15-APR-09 22-APR-09 296 0.027 +1- 0.003 0.019 22-APR-09 29-APR-09 309 0.024 +1- 0.003 0.025 29-APR-09 06-MAY-09 306 0.024 +1- 0.003 0.018 06-MAY-09 13-MAY-09 297 0.025 +1- 0.003 0.013 13-MAY-09 21-MAY-09 354 0.024 +1- 0.003 0.014 21 -MAY-09 28-MAY-09 298 0.027 +1- 0.003 0.019 28-MAY-09 04-JUN-09 307 0.032 +1- 0.003 0.011 04-JUN-09 10-JUN-09 209 0.032 +1- 0.005 0.017 17-JUN-09 24-JUN-09 298 0.029 +1- 0.004 0.027 24-JUN-09 01-JUL-09 300 0.039 +1- 0.004 0.025 01-JUL-09 08-JUL-09 106 0.043 +1- 0.008 0.032 08-JUL-09 16-JUL-09 345 0.035 +1- 0.003 0.010 16-JUL-09 22-JUL-09 254 0.030 +1- 0.004 0.037 22-JUL-09 29-JUL-09 300 0.036 +1- 0.004 0.018 29-JUL-09 05-AUG-09 299 0.032 +1- 0.004 0.021 05-AUG-09 10-AUG-09 215 0.046 +1- 0.005 0.013 10-AUG-09 17-AUG-09 308 0.041 +1- 0.004 0.011 17-AUG-09 24-AUG-09 292 0.025 +1- 0.003 0.009 24-AUG-09 31-AUG-09 298 0.031 +1- 0.004 0.012 31-AUG-09 09-SEP-09 388 0.035 +1- 0.003 0.012 09-SEP-09 14-SEP-09 220 0.042 +1- 0.006 0.021 14-SEP-09 21-SEP-09 291 0.036 +1- 0.005 0.013 21-SEP-09 28-SEP-09 308 0.039 +1- 0.004 0.010 21-SEP-09 28-SEP-09 308 0.029 +1- 0.003 RECOUNT 28-SEP-09 05-OCT-09 303 0.014 +1- 0.004 < 0.012 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 5

Air Particulate and Charcoal Filters Location: 032 Collection Collection Volume Gross Beta 1-13.1 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCilm 3 ) (pCilm3 )

28-SEP-09 05-OCT-09 303 0.014 +1- 0.004 Duplicate 05-OCT-09 12-OCT-09 312 0.018 +1- 0.003 0.012 12-OCT-09 19-OCT-09 309 0.013 +1- 0.003 0.009 19-OCT-09 26-OCT-09 300 0.021 -i-I- 0.004 0.011 26-OCT-09 02-NOV-09 305 0.015 +1- 0.004 0.008 02-NOV-09 09-NOV-09 301 0.032 +1- 0.004 0.012 09-NOV-09 16-NOV-09 310 0.034 +1- 0.004 0.013 16-NOV-09 25-NOV-09 375 0.035 +1- 0.004 0.012 25-NOV-09 30-NOV-09 211 0.017 +1- 0.005 0.017 30-NOV-09 07-DEC-09 315 0.022 +1- 0.004 0.014 07-DEC-09 14-DEC-09 296 0.041 +1- 0.005 0.010 14-DEC-09 21-DEC-09 303 0.053 +1- 0.005 0.011 21-DEC-09 28-DEC-09 297 0.029 +1- 0.004 0.016 28-DEC-09 04-JAN-1 0 319, 0.042 +1- 0.004 0.007 2009 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/m3 ) (pCi/m 3 )

31-DEC-08 07-JAN-09 296 0.036 +1- 0.004 0.010 07-JAN-09 14-JAN-09 305 0.035 +1- 0.004 0.019 14-JAN-09 21-JAN-09 310 0.032 +1- 0.003 0.017 21-JAN-09 28-JAN-09 316 0.047 +1- 0.004 0.015 28-JAN-09 04-FEB-09 302 0.026 +1- 0.003 0.016 04-FEB-09 11-FEB-09 296 0.038 +1- 0.004 0.018 11-FEB-09 18-FEB-09 302 0.039 +1- 0.004 0.021 18-FEB-09 25-FEB-09 317 0.039 +1- 0.004 0.016 25-FEB-09 05-MAR-09 359 0.037 +1- 0.003 0.012 05-MAR-09 11-MAR-09 261 0.032 +1- 0.004 0.013 11-MAR-09 18-MAR-09 288 0.037 +1- 0.004 0.009 18-MAR-09 26-MAR-09 346 0.032 +1- 0.003 0.007 26-MAR-09 01-APR-09 272 0.027 +1- 0.004 0.016 01-APR-09 08-APR-09 305 0.036 +1- 0.004 0.012 08-APR-09 15-APR-09 309 0.032 +1- 0.004 0.020 15-APR-09 22-APR-09 297 0.029 +1- 0.003 0.019 22-APR-09 29-APR-09 294 0.025 +1- 0.003 0.027 29-APR-09 06-MAY-09 308 0.024 +1- 0.003 0.018 29-APR-09 06-MAY-09 308 0.026 +1- 0.003 Duplicate 06-MAY-09 13-MAY-09 296 0.022 +1- 0.003 0.013 13-MAY-09 21-MAY-09 361 0.025 +1- 0.003 0.014 21-MAY-09 28-MAY-09 303 0.022 +1- 0.003 0.018 28-MAY-09 04-JUN-09 302 0.033 +1- 0.004 0.011 04-JUN-09 10-JUN-09 216 0.030 +1- 0.004 0.016 10-JUN-09 17-JUN-09 295 0.025 +1- 0.003 0.016 17-JUN-09 24-JUN-09 305 0.022 +1- 0.003 0.016 24-JUN-09 01-JUL-09 307 0.033 +1- 0.004 0.024 24-JUN-09 01-JUL-09 307 0.037 +1- 0.004 Duplicate 01-JUL-09 08-JUL-09 306 0.028 +1- 0.003 0.011 08-JUL-09 16-JUL-09 343 0.033 +1- 0.003 0.010 16-JUL-09 22-JUL-09 254 0.031 +1- 0.004 0.022 22-JUL-09 29-JUL-09 297 0.035 +1- 0.004 0.018 29-JUL-09 05-AUG-09 297 0.032 +1- 0.004 0.021 29-JUL-09 05-AUG-09 297 0.029 +1- 0.004 Duplicate 05-AUG-09 10-AUG-09 211 0.042 +1- 0.005 0.014 10-AUG-09 17-AUG-09 309 0.043 +1- 0.004 0.011 17-AUG-09 24-AUG-09 293 0.027 +1- 0.003 0.009 24-AUG-09 31-AUG-09 301 0.030 +1- 0.004 0.012 31-AUG-09 09-SEP-09 384 0.031 +1- 0.003 0.012 09-SEP-09 14-SEP-09 213 0.039 +1- 0.006 0.021 2009 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 ) (pCi/m 3 )

14-SEP-09 21-SEP-09 290 0.034 +1- 0.005 < 0.013 21-SEP-09 28-SEP-09 297 0.034 0.004 < 0.011 21-SEP-09 28-SEP-09 297 0.031 +1- 0.004 RECOUNT 28-SEP-09 05-OCT-09 296 0.016 +1- 0.004 0.012 05-OCT-09 12-OCT-09 298 0.016 +1- 0.003 0.012 12-OCT-09 19-OCT-09 295 0.014 +1- 0.003 0.010 19-OCT-09 26-OCT-09 298 0.028 +1- 0.004 0.011 19-OCT-09 26-OCT-09 298 0.020 +1- 0.004 Duplicate 26-OCT-09 02-NOV-09 298 0.017 +1- 0.004 < 0.008 02-NOV-09 09-NOV-09 291 0.026 +1- 0.004 < 0.012 02-NOV-09 09-NOV-09 291 0.027 +1- 0.004 Duplicate 09-NOV-09 16-NOV-09 296 0.036 +1- 0.004 < 0.014 16-NOV-09 25-NOV-09 359 0.034 +1- 0.004 < 0.012 25-NOV-09 30-NOV-09 204 0.016 +1- 0.006 < 0.018 30-NOV-09 07-DEC-09 323 0.025 +1- 0.004 < 0.013 07-DEC-09 14-DEC-09 291 0.039 0.005 < 0.010 14-DEC-09 21-DEC-09 298 0.046 +1- 0.005 < 0.011 21-DEC-09 28-DEC-09 301 0.023 +1- 0.004 < 0.016 28-DEC-09 04-JAN-1 0 314 0.043 +1- 0.004 < 0.007 2009 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 (pCi/m 3 ) (pCi/mr3 )

31-DEC-08 07-JAN-09 301 0.041 +1- 0.004 0.010 07-JAN-09 14-JAN-09 306 0.033 +1- 0.004 0.019 14-JAN-09 21-JAN-09 314 0.030 +1- 0.003 0.017 21-JAN-09 28-JAN-09 313 0.039 +1- 0.004 0.015 28-JAN-09 04-FEB-09 309 0.028 +1- 0.003 0.015 04-FEB-09 11-FEB-09 294 0.036 +1- 0.004 0.018 11-FEB-09 18-FEB-09 304 0.038 +1- 0.004 0.021 11-FEB-09 18-FEB-09 304 0.039 +1- 0.004 Duplicate 18-FEB-09 25-FEB-09 322 0.041 +1- 0.004 < 0.016 18-FEB-09 25-FEB-09 322 0.040 +1- 0.004 Duplicate 25-FEB-09 05-MAR-09 365 0.035 +1- 0.003 < 0.012 05-MAR-09 11-MAR-09 265 0.033 +1- 0.004 < 0.013 11-MAR-09 18-MAR-09 291 0.040 +1- 0.004 < 0.009 18-MAR-09 26-MAR-09 350 0.031 +1- 0.003 < 0.007 26-MAR-09 01-APR-09 264 0.028 +1- 0.004 < 0.017 01-APR-09 08-APR-09 307 0.032 +1- 0.004 < 0.012 08-APR-09 15-APR-09 305 0.035 +1- 0.004 < 0.020 15-APR-09 22-APR-09 297 0.027 +1- 0.003 < 0.019 22-APR-09 29-APR-09 300 0.025 +1- 0.003 < 0.026 29-APR-09 06-MAY-09 310 0.026 +1- 0.003 < 0.018 06-MAY-09 13-MAY-09 297 0.021 +1- 0.003 < 0.013 06-MAY-09 13-MAY-09 297 0.026 +1- 0.003 Duplicate 13-MAY-09 21-MAY-09 363 0.025 +1- 0.003 < 0.014 21 -MAY-09 28-MAY-09 299 0.024 +1- 0.003 < 0.018 28-MAY-09 04-JUN-09 301 0.033 +1- 0.004 < 0.011 04-JUN-09 10-JUN-09 255 0.029 +1- 0.004 < 0.014 10-JUN-09 17-JUN-09 300 0.025 +1- 0.003 < 0.015 17-JUN-09 24-JUN-09 301 0.025 +1- 0.003 < 0.029 24-JUN-09 01-JUL-09 299 0.040 +1- 0.004 < 0.025 01-JUL-09 08-JUL-09 303 0.036 +1- 0.004 < 0.011 08-JUL-09 16-JUL-09 343 0.033 +1- 0.003 < 0.010 16-JUL-09 22-JUL-09 296 0.031 +1- 0.004 < 0.034 22-JUL-09 29-JUL-09 310 0.035 0.004 < 0.018 29-JUL-09 05-AUG-09 294 0.030 +1- 0.004 < 0.021 05-AUG-09 10-AUG-09 220 0.041 +1- 0.005 < 0.013 10-AUG-09 17-AUG-09 314 0.040 +1- 0.004 < 0.011 17-AUG-09 24-AUG-09 291 0.025 +1- 0.003 < 0.009 24-AUG-09 31-AUG-09 306 0.027 +1- 0.003 < 0.012 31-AUG-09 09-SEP-09 390 0.030 +1- 0.003 < 0.012 09-SEP-09 14-SEP-09 228 0.046 +1- 0.006 < 0.020 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 9

Air Particulate and Charcoal Filters Location: 049 Collection Collection Volume3 Gross Beta 1-131 Duplicate m

Start Date End Date Concentration Concentration Analysis 3 )

(pCilm3 (pCi/m 3 )

14-SEP-09 21-SEP-09 295 0.031 +1- 0.004 < 0.012 21-SEP-09 28-SEP-09 307 0.019 +1- 0.004 < 0.010 21-SEP-09 28-SEP-09 307 0.019 +1- 0.004 Duplicate 28-SEP-09 05-OCT-09 308 0.013 +1- 0.004 0.012 05-OCT-09 12-OCT-09 310 0.014 +1- 0.003 0.012 12-OCT-09 19-OCT-09 302 0.014 +1- 0.003 0.010 19-OCT-09 26-OCT-09 295 0.020 +1- 0.004 0.011 26-OCT-09 02-NOV-09 303 0.013 +1- 0.004 0.008 02-NOV-09 09-NOV-09 300 0.030 +1- 0.004 0.012 09-NOV-09 16-NOV-09 309 0.036 +1- 0.004 0.013 16-NOV-09 25-NOV-09 380 0.031 +1- 0.004 0.012 25-NOV-09 30-NOV-09 216 0.015 +1- 0.005 0.017 30-NOV-09 07-DEC-09 323 0.026 +1- 0.004 0.013 07-DEC-09 14-DEC-09 295 0.038 +1- 0.004 0.010 07-DEC-09 14-DEC-09 295 0.041 +1- 0.005 Duplicate 14-DEC-09 21-DEC-09 304 0.051 +1- 0.005 0.011 21-DEC-09 28-DEC-09 296 0.030 +1- 0.004 0.016 28-DEC-09 04-JAN-1 0 321 0.042 +1- 0.004 0.006 2009 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 (pCiIm 3 ) (pCi/mr3 )

31-DEC-08 07-JAN-09 293 0.038 +1- 0.004 0.010 07-JAN-09 14-JAN-09 309 0.035 +1- 0.004 0.019 14-JAN-09 21-JAN-09 311 0.029 +1- 0.003 0.017 21-JAN-09 28-JAN-09 314 0.041 +1- 0.004 0.015 28-JAN-09 04-FEB-09 303 0.024 +1- 0.003 0.015 04-FEB-09 11-FEB-09 300 0.034 +1- 0.004 0.018 11-FEB-09 18-FEB-09 300 0.035 +1- 0.004 0.021 18-FEB-09 25-FEB-09 314 0.041 +1- 0.004 0.016 25-FEB-09 05-MAR-09 364 0.038 +1- 0.003 0.012 05-MAR-09 11-MAR-09 156 0.037 +1- 0.006 0.021 11-MAR-09 18-MAR-09 295 0.036 +1- 0.004 0.009 18-MAR-09 26-MAR-09 351 0.029 +1- 0.003 0.007 26-MAR-09 01-APR-09 194 0.032 +1- 0.005 0.023 01-APR-09 08-APR-09 302 0.028 +1- 0.003 0.012 01-APR-09 08-APR-09 302 0.028 +1- 0.003 Duplicate 08-APR-09 15-APR-09 307 0.029 +1- 0.003 0.020 15-APR-09 22-APR-09 147 0.037 +1- 0.006 0.038 22-APR-09 29-APR-09 254 0.031 +1- 0.004 0.031 29-APR-09 06-MAY-09 299 0.024 +1- 0.003 0.019 06-MAY-09 13-MAY-09 306 0.025 +1- 0.003 0.012 13-MAY-09 21-MAY-09 358 0.026 +1- 0.003 0.014 21-MAY-09 28-MAY-09 295 0.024 +1- 0.003 0.019 28-MAY-09 04-JUN-09 304 0.033 +1- 0.004 0.011 04-JUN-09 10-JUN-09 241 0.027 +1- 0.004 0.015 10-JUN-09 17-JUN-09 297 0.026 +1- 0.003 0.015 17-JUN-09 24-JUN-09 301 0.021 +1- 0.003 0.030 24-JUN-09 01-JUL-09 300 0.037 +1- 0.004 0.025 01-JUL-09 08-JUL-09 299 0.033 +1- 0.004 0.011 08-JUL-09 16-JUL-09 339 0.030 +1- 0.003 0.010 16-JUL-09 22-JUL-09 251 0.028 +1- 0.004 0.026 22-JUL-09 29-JUL-09 296 0.035 +1- 0.004 0.019 29-JUL-09 05-AUG-09 295 0.032 +1- 0.004 0.021 05-AUG-09 10-AUG-09 211 0.042 +1- 0.005 0.014 10-AUG-09 17-AUG-09 290 0.041 +1- 0.004 0.012 17-AUG-09 24-AUG-09 291 0.028 +1- 0.003 0.009 24-AUG-09 31-AUG-09 298 0.029 +1- 0.004 0.012 31-AUG-09 09-SEP-09 379 0.033 +1- 0.003 0.012 09-SEP-09 14-SEP-09 215 0.041 +1- 0.006 0.021 14-SEP-09 21-SEP-09 288 0.038 +1- 0.005 0.013 21-SEP-09 28-SEP-09 305 0.021 +1- 0.004 0.010 2009 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/m3) (pCilm3 )

28-SEP-09 05-OCT-09 288 0.013 +1- 0.004 0.013 05-OCT-09 12-OCT-09 289 0.017 +1- 0.004 0.012 12-OCT-09 19-OCT-09 303 0.019 +1- 0.004 0.010 19-OCT-09 26-OCT-09 303 0.018 +1- 0.004 0.011 26-OCT-09 02-NOV-09 299 0.015 +1- 0.004 0.008 02-NOV-09 09-NOV-09 292 0.025 +1- 0.004 0.012 09-NOV-09 16-NOV-09 299 0.038 +1- 0.004 0.014 16-NOV-09 25-NOV-09 337 0.034 +1- 0.004 0.013 25-NOV-09 30-NOV-09 211 0.016 +1- 0.005 0.017 30-NOV-09 07-DEC-09 296 0.021 +1- 0.004 0.014 07-DEC-09 14-DEC-09 285 0.040 +1- 0.005 0.010 14-DEC-09 21-DEC-09 292 0.051 +1- 0.005 0.012 21-DEC-09 28-DEC-09 294 0.025 +1- 0.004 0.016 28-DEC-09 04-JAN-1 0 306 0.041 +1- 0.004 0.007 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 12

Quarterly Air Particulate - Gamma Location: 002 01-APR-09 3 Nuclide Concentration (pCi/m )

BE-7 0.098+/- 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 01-JUL-09 3 Nuclide Concentration (DCilm )

BE-7 0.096+/- 0.013 BE-7 0.101+/- 0.011 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 < 0.001 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

• Duplicate Analysis 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 13

Quarterly Air Particulate - Gamma Location: 002 28-SEP-09 Nuclide Concentration (pCi/m 3 )

BE-7 0.080+/- 0.011 BE-7 0.103+/- 0.016 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 < 0.001 ZR-NB-95 < 0.001 ZR-NB-95 < 0.001 CS-i 34 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 CS-1 37 < 0.001 28-DEC-09 Nuclide Concentration (pCilm 3 )

BE-7 0.060+/- 0.012 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 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 14

Quarterly Air Particulate - Gamma Location: 018 01-APR-09 Nuclide Concentration (pCiIm 3 )

BE-7 0.107+/- 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-1 34 < 0.001 CS-1 37 < 0.001 01-JUL-09 3 Nuclide Concentration (pCi/lm )

BE-7 0.103+/- 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-134 < 0.001 CS-1 37 < 0.001 28-SEP-09 Nuclide Concentration (pCi/m33 )

BE-7 0.095+/- 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-134 < 0.001 CS-1 37 < 0.001

• Duplicate Analysis 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 15

Quarterly Air Particulate - Gamma Location: 018 28-DEC-09 Nuclide Concentration (pCi/m 3 )

BE-7 0.058+/- 0.013 BE-7 0.062+/- 0.013 MN-54 0.001 MN-54 0.001 CO-58 0.001 CO-58 0.001 FE-59 0.001 FE-59 0.002 CO-60 0.001 CO-60 0.001 ZN-65 0.001 ZN-65 0.001 ZR-NB-95 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-134 0.001 CS-137 0.001 CS-1 37 0.001

• Duplicate Analysis 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 16

Quarterly Air Particulate - Gamma Location: 032 01 -APR-09 Nuclide Concentration (pCi/m 3 )

BE-7 0.093+/- 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-1 37 < 0.001 01-JUL-09 3 Nuclide Concentration (pCiIm )

BE-7 0.114+/- 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-1 34 < 0.001 CS-1 37 < 0.001 28-SEP-09 3 Nuclide Concentration (pCilm )

BE-7 0.104+/- 0.017 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-DEC-09 3 Nuclide Concentration (pCi/m )

BE-7 0.063+/- 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 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 17

Quarterly Air Particulate - Gamma Location: 037 01-APR-09 Nuclide Concentration (pCilm 3 )

BE-7 0.103+/- 0.012 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 01-JUL-09 3 Nuclide Concentration (pCilm )

BE-7 0.101+/- 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-1 37 < 0.001 28-SEP-09 3 Nuclide Concentration (pCilm )

BE-7 0.122+/- 0.016 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 28-DEC-09 3 Nuclide Concentration (pCilm )

BE-7 0.064+/- 0.010 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 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 18

Quarterly Air Particulate - Gamma Location: 049 01-APR-09 Nuclide Concentration (pCilm3 )

BE-7 0.114+/- 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-1 34 < 0.001 CS-1 37 < 0.001 01-JUL-09 3 Nuclide Concentration (pCi/m )

BE-7 0.101+/- 0.016 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-SEP-09 3 Nuclide Concentration (pCilm )

BE-7 0.097+/- 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-137 < 0.001 28-DEC-09 3 Nuclide Concentration (pCilm )

BE-7 0.062+/- 0.015 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 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 19

Quarterly Air Particulate - Gamma Location: 053 01-APR-09 Nuclide Concentration (pCi/m 3 )

BE-7 0.100+/- 0.011 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 S< 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 01-JUL-09 3 Nuclide Concentration (pCilm )

BE-7 0.108+/- 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-137 *< 0.001 28-SEP-09 3 Nuclide Concentration (pCi/m )

BE-7 0.107+/- 0.018 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-DEC-09 3 Nuclide Concentration (pCilm )

BE-7 0.073+/- 0.015 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-1 37 < 0.001

• Duplicate Analysis 2009 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 Analysis (pCi/Liter) 08-JAN-09 MN-54 < 3.6 08-JAN-09 CO-58 < 2.2 08-JAN-09 FE-59 < 6.1 08-JAN-09 CO-60 < 3.8 08-JAN-09 ZN-65 < 4.3 08-JAN-09 ZR-NB-95 < 2.8 08-JAN-09 1-131 < 6.4 08-JAN-09 CS-134 < 3.9 08-JAN-09 CS-1 37 < 3.0 08-JAN-09 BA-LA-140 < 3.0 08-JAN-09 H-3 < 133.0 13-FEB-09 MN-54 < 3.4 13-FEB-09 CO-58 < 2.2 13-FEB-09 FE-59 < 3.1 13-FEB-09 CO-60 < 2.1 13-FEB-09 ZN-65 < 2.5 13-FEB-09 ZR-NB-95 < 2.6 13-FEB-09 1-131 < 6.1 13-FEB-09 CS-1 34 < 2.6 13-FEB-09 CS-137 < 2.9 13-FEB-09 BA-LA-140 < 1.9 13-FEB-09 H-3 < 145.0 12-MAR-09 MN-54 < 1.6 12-MAR-09 CO-58 < 1.6 12-MAR-09 FE-59 < 3.7 12-MAR-09 CO-60 < 2.7 12-MAR-09 ZN-65 < 2.5 12-MAR-09 ZR-NB-95 < 3.2 12-MAR-09 1-131 < 4.1 12-MAR-09 CS-134 < 2.6 12-MAR-09 CS-137 < 2.4 12-MAR-09 BA-LA-1 40 < 2.6 12-MAR-09 H-3 < 149.0 16-APR-09 MN-54 < 2.6 16-APR-09 CO-58 < 2.3 16-APR-09 FE-59 < 4.5 16-APR-09 CO-60 < 2.4 16-APR-09 ZN-65 < 4.6 16-APR-09 ZR-NB-95 < 2.5 16-APR-09 1-131 < 4.8 2009 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 16-APR-09 CS-1 34 2.2 16-APR-09 CS-137 2.0 16-APR-09 BA-LA- 140 3.0 16-APR-09 H-3 153.0 11-MAY-09 MN-54 1.9 11-MAY-09 CO-58 2.3 11-MAY-09 FE-59 4.6 11-MAY-09 CO-60 2.0 11-MAY-09 ZN-65 4.4 11-MAY-09 ZR-NB-95 2.2 11-MAY-09 1-131 3.6 11-MAY-09 CS-134 1.9 11-MAY-09 CS-1 37 2.5 11-MAY-09 BA-LA-140 2.3 11-MAY-09 H-3 155.0 08-JUN-09 MN-54 4.0 08-JUN-09 CO-58 2.8 08-JUN-09 FE-59 5.3 08-JUN-09 CO-60 2.1 08-JUN-09 ZN-65 4.5 08-JUN-09 ZR-NB-95 2.5 08-JUN-09 1-131 3.3 08-JUN-09 CS-1 34 2.6 08-JUN-09 CS-1 37 3.2 08-JUN-09 BA-LA-140 2.5 08-JUN-09 H-3 142.0 09-JUL-09 MN-54 2.4 09-JUL-09 CO-58 2.1 09-JUL-09 FE-59 5.8 09-JUL-09 CO-60 2.7 09-JUL-09 ZN-65 3.9 09-JUL-09 ZR-NB-95 3.5 09-JUL-09 1-131 4.4 09-JUL-09 CS-134 2.9 09-JUL-09 CS-137 2.9 09-JUL-09 BA-LA- 140 1.5 09-JUL-09 H-3 147.0 10-AUG-09 MN-54 3.1 10-AUG-09 CO-58 1.8 10-AUG-09 FE-59 5.0 2009 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 10-AUG-09 CO-60 3.1 10-AUG-09 ZN-65 3.3 10-AUG-09 ZR-NB-95 2.9 10-AUG-09 1-131 4.9 10-AUG-09 CS-1 34 3.2 10-AUG-09 CS-137. 2.8 10-AUG-09 BA-LA-140 2.7 10-AUG-09 H-3 142.0 21-SEP-09 MN-54 3.9 Duplicate 21-SEP-09 MN-54 2.2 21-SEP-09 CO-58 3.5 Duplicate 21-SEP-09 CO-58 2.9 21-SEP-09 FE-59 5.0 Duplicate 21-SEP-09 FE-59 4.8 21-SEP-09 CO-60 3.8 Duplicate 21-SEP-09 CO-60 2.2 21-SEP-09 ZN-65 4.9 Duplicate 21-SEP-09 ZN-65 4.4 21-SEP-09 ZR-NB-95 4.1 Duplicate 21-SEP-09 ZR-NB-95 3.6 21-SEP-09 1-131 7.2 Duplicate 21-SEP-09 1-131 2.5 21-SEP-09 CS-134 3.5 Duplicate 21-SEP-09 CS-134 2.4 21-SEP-09 CS-1 37 4.8 Duplicate 21 -SEP-0-9 CS-137 2.1 21-SEP-09 BA-LA-140 2.2 Duplicate 21-SEP-09 BA-LA-140 2.1 21-SEP-09 H-3 152.0 Duplicate 21-SEP-09 H-3 152.0 13-OCT-09 MN-54 2.1 13-OCT-09 CO-58 2.4 13-OCT-09 FE-59 3.7 13-OCT-09 CO-60 3.0 13-OCT-09 ZN-65 3.3 13-OCT-09 ZR-NB-95 1.8 13-OCT-09 1-131 6.4 13-OCT-09 CS-134 2.2 13-OCT-09 CS-137 2.7 13-OCT-09 BA-LA-140 1.7 2009 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 13-OCT-09 H-3 152.0 10-NOV-09 MN-54 3.0 10-NOV-09 CO-58 2.2 10-NOV-09 FE-59 4.6 10-NOV-09 CO-60 2.3 10-NOV-09 ZN-65 2.8 10-NOV-09 ZR-NB-95 3.9 10-NOV-09 1-131 3.3 10-NOV-09 CS-1 34 2.0 10-NOV-09 CS-1 37 3.7 10-NOV-09 BA-LA- 140 2.5 10-NOV-09 H-3 150.0 21-DEC-09 MN-54 2.0 21-DEC-09 CO-58 2.3 21-DEC-09 FE-59 2.9 21-DEC-09 CO-60 1.9 21-DEC-09 ZN-65 4.3 21-DEC-09 ZR-NB-95 3.5 21-DEC-09 1-131 4.8 21-DEC-09 CS-1 34 2.6 21-DEC-09 CS-1 37 2.9 21-DEC-09 BA-LA- 140 2.7 21-DEC-09 H-3 150.0 2009 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 (pCilLiter) Analysis 08-JAN-09 MN-54 3.9 08-JAN-09 CO-58 4.2 08-JAN-09 FE-59 5.0 08-JAN-09 CO-60 2.4 08-JAN-09 ZN-65 4.0 08-JAN-09 ZR-NB-95 3.4 08-JAN-09 1-131 9.6 08-JAN-09 CS-134 2.6 08-JAN-09 CS-137 3.5 08-JAN-09 BA-LA-140 4.2 08-JAN-09 H-3 9,382+1 273.0 13-FEB-09 MN-54 2.4 13-FEB-09 CO-58 1.9 13-FEB-09 FE-59 5.6 13-FEB-09 CO-60 1.9 13-FEB-09 ZN-65 3.4 13-FEB-09 ZR-NB-95 3.9 13-FEB-09 1-131 5.5 13-FEB-09 CS-1 34 2.6 13-FEB-09 CS-137 3.2 13-FEB-09 BA-LA-140 1.3 13-FEB-09 H-3 10,180+- 286.0 12-MAR-09 MN-54 2.7 12-MAR-09 CO-58 2.8 12-MAR-09 FE-59 4.9 12-MAR-09 CO-60 2.9 12-MAR-09 ZN-65 5.9 12-MAR-09 ZR-NB-95 3.9 12-MAR-09 1-131 6.3 12-MAR-09 CS-134 3.4 12-MAR-09 CS-137 4.6 12-MAR-09 BA-LA-140 4.5 12-MAR-09 H-3 9,676+1 295.0 16-APR-09 MN-54 1.7 Duplicate 16-APR-09 MN-54 2.4 16-APR-09 CO-58 2.6 Duplicate 16-APR-09 CO-58 2.7 16-APR-09 FE-59 5.3 Duplicate 16-APR-09 FE-59 3.5 16-APR-09 CO-60 2.3 Duplicate 2009 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 (pCilLiter) Analysis 16-APR-09 CO-60 3.0 16-APR-09 ZN-65 6.2 Duplicate 16-APR-09 ZN-65 2.7 16-APR-09 ZR-NB-95 2.0 Duplicate 16-APR-09 ZR-NB-95 2.2 16-APR-09 1-131 6.5 Duplicate 16-APR-09 1-131 5.3 16-APR-09 CS-1 34 2.6 Duplicate 16-APR-09 CS-1 34 10,349+1 2.1 16-APR-09 CS-1 37 2.1 Duplicate 16-APR-09 CS-1 37 2.8 16-APR-09 BA-LA-i 40 1.6 Duplicate 16-APR-09 BA-LA-140 1.6 16-APR-09 H-3 311.0 Duplicate 16-APR-09 H-3 10,507+1 313.0 11-MAY-09 MN-54 2.6 11-MAY-09 CO-58 1.6 11-MAY-09 FE-59 4.1 11-MAY-09 CO-60 2.5 11-MAY-09 ZN-65 3.6 11-MAY-09 ZR-NB-95 1.6 11-MAY-09 1-131 3.2 11-MAY-09 CS-1 34 2.1 11-MAY-09 CS-1 37 2.7 11-MAY-09 BA-LA- 140 2.5 11-MAY-09 H-3 11,530+- 327.0 08-JUN-09 MN-54 2.9 08-JUN-09 CO-58 3.8 08-JUN-09 FE-59 7.6 08-JUN-09 CO-60 2.7 08-JUN-09 ZN-65 3.5 08-JUN-09 ZR-NB-95 3.1 08-JUN-09 1-131 5.8 08-JUN-09 CS-134 4.0 08-JUN-09 CS-1 37 4.0 08-JUN-09 BA-LA- 140 2.4 08-JUN-09 H-3 10,928+- 293.0 09-JUL-09 MN-54 2.9 09-JUL-09 CO-58 2.9 09-JUL-09 FE-59 2.3 2009 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 09-JUL-09 CO-60 2.9 09-JUL-09 ZN-65 6.9 09-JUL-09 ZR-NB-95 3.6 09-JUL-09 1-131 4.6 09-JUL-09 CS-134 2.8 09-JUL-09 CS-137 3.5 09-JUL-09 BA-LA- 140 2.7 09-JUL-09 H-3 11,615+1 317.0 10-AUG-09 MN-54 3.3 10-AUG-09 CO-58 1.9 10-AUG-09 FE-59 4.5 10-AUG-09 CO-60 3.1 10-AUG-09 ZN-65 3.5 10-AUG-09 ZR-NB-95 4.9 10-AUG-09 1-131 3.9 10-AUG-09 CS-1 34 2.8 10-AUG-09 CS-1 37 2.6 10-AUG-09 BA-LA-140 1.5 10-AUG-09 H-3 11,252+1 310.0 21-SEP-09 MN-54 3.0 21-SEP-09 CO-58 3.1 21-SEP-09 FE-59 2.6 21-SEP-09 CO-60 2.1 21-SEP-09 ZN-65 2.4 21-SEP-09 ZR-NB-95 4.6 21-SEP-09 1-131 5.3 21 -SEP-09 CS-134 4.3 21-SEP-09 CS-137 4.7 21-SEP-09 BA-LA-140 3.0 21-SEP-09 H-3 12,830+1 332.0 13-OCT-09 MN-54 1.4 13-OCT-09 CO-58 1.9 13-OCT-09 FE-59 6.4 13-OCT-09 CO-60 2.1 13-OCT-09 ZN-65 5.2 13-OCT-09 ZR-NB-95 2.1 13-OCT-09 1-131 5.0 13-OCT-09 CS-134 2.1 13-OCT-09 CS-137 3.4 13-OCT-09 BA-LA- 140 2.2 2009 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 13-OCT-09 H-3 13,351 +/- 346.0 10-NOV-09 MN-54 1.9 10-NOV-09 CO-58 1.5 10-NOV-09 FE-59 3.1 10-NOV-09 CO-60 2.7 10-NOV-09 ZN-65 5.9 10-NOV-09 ZR-NB-95 2.8 10-NOV-09 1-131 4.8 10-NOV-09 CS-1 34 2.6 10-NOV-09 CS-1 37 3.0 10-NOV-09 BA-LA-140 2.2 10-NOV-09 H-3 12,635+1 332.0 21-DEC-09 MN-54 3.0 21-DEC-09 CO-58 2.8 21-DEC-09 FE-59 2.3 21-DEC-09 CO-60 1.9 21-DEC-09 ZN-65 2.7 21-DEC-09 ZR-NB-95 2.2 21-DEC-09 1-131 3.4 21-DEC-09 CS-1 34 2.3 21-DEC-09 CS-137 2.1 21-DEC-09 BA-LA- 140 3.9 21-DEC-09 H-3 12,386+- 336.0 2009 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 18-FEB-09 MN-54 2.6 18-FEB-09 CO-58 1.7 18-FEB-09 FE-59 4.0 18-FEB-09 CO-60 1.9 18-FEB-09 ZN-65 4.2 18-FEB-09 ZR-NB-95 2.1 18-FEB-09 CS-134 2.5 18-FEB-09 CS-137 3.8 18-FEB-09 BA-LA- 140 2.4 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.345 15-MAY-09 MN-54 1.6 15-MAY-09 CO-58 2.7 15-MAY-09 FE-59 2.6 15-MAY-09 CO-60 1.8 15-MAY-09 ZN-65 2.8 15-MAY-09 ZR-NB-95 2.9 15-MAY-09 CS-1 34 2.8 15-MAY-09 CS-1 37 2.2 15-MAY-09 BA-LA-140 1.8 15-MAY-09 H-3 163.0 15-MAY-09 1-131 (CHEM) 0.324 24-AUG-09 MN-54 2.8 24-AUG-09 CO-58 3.3 24-AUG-09 FE-59 2.1 24-AUG-09 CO-60 1.8 24-AUG-09 ZN-65 1.6 24-AUG-09 ZR-NB-95 2.5 24-AUG-09 CS-1 34 3.4 24-AUG-09 CS-1 37 3.8 24-AUG-09 BA-LA-140 3.5 24-AUG-09 H-3 146.0 24-AUG-09 1-131 (CHEM) 0.345 10-NOV-09 MN-54 3.0 10-NOV-09 CO-58 2.5 10-NOV-09 FE-59 6.9 10-NOV-09 CO-60 3.0 10-NOV-09 ZN-65 4.5 10-NOV-09 ZR-NB-95 3.8 10-NOV-09 CS-134 3.5 10-NOV-09 CS-137 5.0 2009 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 10-NOV-09 BA-LA-140

• 4.0 10-NOV-09 H-3 < 150.0 10-NOV-09 1-131 (CHEM) < 0.319 2009 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 (pCilLiter) Analysis 18-FEB-09 MN-54 4.3 18-FEB-09 CO-58 2.0 18-FEB-09 FE-59 4.3 18-FEB-09 CO-60 2.5 18-FEB-09 ZN-65 4.8 18-FEB-09 ZR-NB-95 3.1 18-FEB-09 CS-134 4.1 18-FEB-09 CS-137 4.1 18-FEB-09 BA-LA-1 40 6.8 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.358 15-MAY-09 MN-54 2.2 15-MAY-09 CO-58 3.1 15-MAY-09 FE-59 4.0 15-MAY-09 CO-60 2.1 15-MAY-09 ZN-65 4.9 15-MAY-09 ZR-NB-95 3.5 15-MAY-09 CS-1 34 3.5 15-MAY-09 CS-137 3.7 15-MAY-09 BA-LA-140 2.4 15-MAY-09 H-3 163.0 15-MAY-09 1-131 (CHEM) 0.302 24-AUG-09 MN-54 2.8 24-AUG-09 CO-58 1.9 24-AUG-09 FE-59 4.4 24-AUG-09 CO-60 2.4 24-AUG-09 ZN-65 4.1 24-AUG-09 ZR-NB-95 2.7 24-AUG-09 CS-1 34 3.1 24-AUG-09 CS-137 2.7 24-AUG-09 BA-LA-140 3.3 24-AUG-09 H-3 146.0 24-AUG-09 1-131 (CHEM) 0.33 10-NOV-09 MN-54 4.2 10-NOV-09 CO-58 5.0 10-NOV-09 FE-59 6.3 10-NOV-09 CO-60 3.0 10-NOV-09 ZN-65 4.0 10-NOV-09 ZR-NB-95 4.5 10-NOV-09 CS-134 2.9 10-NOV-09 CS-137 6.4 2009 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 (pCilLiter) Analysis 10-NOV-09 BA-LA-1 40 < 2.2 10-NOV-09 H-3 < 150.0 10-NOV-09 1-131 (CHEM) < 0.452 2009 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 (pCilLiter) Analysis 18-FEB-09 MN-54 3.9 18-FEB-09 CO-58 1.9 18-FEB-09 FE-59 4.2 18-FEB-09 CO-60 1.7 18-FEB-09 ZN-65 2.9 18-FEB-09 ZR-NB-95 4.3 18-FEB-09 CS-134 3.9 18-FEB-09 CS-1 37 4.4 18-FEB-09 BA-LA- 140 2.5 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.457 15-MAY-09 MN-54 1.4 15-MAY-09 CO-58 2.2 15-MAY-09 FE-59 3.5 15-MAY-09 CO-60 2.2 15-MAY-09 ZN-65 2.2 15-MAY-09 ZR-NB-95 2.6 15-MAY-09 CS-134 2.7

.15-MAY-09 CS-1 37 2.3 15-MAY-09 BA-LA- 140 2.2 15-MAY-09 H-3 163.0 15-MAY-09 1-131 (CHEM) 0.388 24-AUG-09 MN-54 2.5 24-AUG-09 CO-58 4.7 24-AUG-09 FE-59 7.2 24-AUG-09 CO-60 2.7 24-AUG-09 ZN-65 10.5 24-AUG-09 ZR-NB-95 6.0 24-AUG-09 CS-134 4.9 24-AUG-09 CS-1 37 4.6 24-AUG-09 BA-LA-140 2.5 24-AUG-09 H-3 146.0 24-AUG-09 1-131 (CHEM) 0.366 10-NOV-09 MN-54 2.0 10-NOV-09 CO-58 2.0 10-NOV-09 FE-59 3.8 10-NOV-09 CO-60 1.6 10-NOV-09 ZN-65 3.9 10-NOV-09 ZR-NB-95 2.7 10-NOV-09 CS-134 2.5 10-NOV-09 CS-137 2.7 2009 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 (pCilLiter) Analysis 10-NOV-09 BA-LA- 140 < 3.4 10-NOV-09 H-3 < 150.0 10-NOV-09 '1-131 (CHEM) < 0.224 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 34

Exposure Pathway - Waterborne Ground Water Location F-I Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 18-FEB-09 MN-54 1.6 18-FEB-09 CO-58 1.7 18-FEB-09 FE-59 1.9 18-FEB-09 CO-60 1.7 18-FEB-09 ZN-65 2.8 18-FEB-09 ZR-NB-95 2.5 18-FEB-09 CS-134 1.6 18-FEB-09 CS-137 2.6 18-FEB-09 BA-LA-140 3.1 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.391 15-MAY-09 MN-54 1.3 Duplicate 15-MAY-09 MN-54 2.6 15-MAY-09 CO-58 2.6 Duplicate 15-MAY-09 CO-58 3.4 15-MAY-09 FE-59 3.4 Duplicate 15-MAY-09 FE-59 5.2 15-MAY-09 CO-60 2.7 Duplicate 15-MAY-09 CO-60 1.7 15-MAY-09 ZN-65 3.8 Duplicate 15-MAY-09 ZN-65 2.4 15-MAY-09 ZR-NB-95 3.1 Duplicate 15-MAY-09 ZR-NB-95 3.1 15-MAY-09 CS-1 34 2.6 Duplicate 15-MAY-09 CS-1 34 2.7 15-MAY-09 CS-137 3.4 Duplicate 15-MAY-09 CS-137 3.5 15-MAY-09 BA-LA-140 3.2 Duplicate 15-MAY-09 BA-LA-140 4.1 15-MAY-09 H-3 163.0 Duplicate 15-MAY-09 H-3 1.63.0 15-MAY-09 1-131 (CHEM) 0.409 Duplicate 15-MAY-09 1-131 (CHEM) 0.44 24-AUG-09 MN-54 2.1 24-AUG-09 CO-58 2.8 24-AUG-09 FE-59 5.5 24-AUG-09 CO-60 2.5 24-AUG-09 ZN-65 5.7 24-AUG-09 ZR-NB-95 3.2 24-AUG-09 CS-134 3.3 24-AUG-09 CS-137 2.6 2009 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 24-AUG-09 BA-LA-140 2.1 24-AUG-09 H-3 146.0 24-AUG-09 1-131 (CHEM) 0.338 10-NOV-09 MN-54 2.5 10-NOV-09 CO-58 2.5 10-NOV-09 FE-59 2.5 10-NOV-09 CO-60 2.3 10-NOV-09 !ZN-65 4.1 10-NOV-09 ZR-NB-95 2.0 10-NOV-09 CS-1 34 2.5 10-NOV-09 CS-1 37 3.1 10-NOV-09 BA-LA-140 2.1 10-NOV-09 H-3 150.0 10-NOV-09 1-131 (CHEM) 0.38 2009 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 18-FEB-09 MN-54 2.2 18-FEB-09 CO-58 1.7 18-FEB-09 FE-59 4.6 18-FEB-09 CO-60 1.9 18-FEB-09 ZN-65 2.3 18-FEB-09 ZR-NB-95 2.2 18-FEB-09 CS-1 34 2.7 18-FEB-09 CS-137 2.7 18-FEB-09 BA-LA-140 2.7 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.357 15-MAY-09 MN-54 2.5 15-MAY-09 CO-58 2.7 15-MAY-09 FE-59 2.7 15-MAY-09 CO-60 2.3 15-MAY-09 ZN-65 3.3 15-MAY-09 ZR-NB-95 1.7 15-MAY-09 CS-1 34 3.3 15-MAY-09 CS-1 37 2.8 15-MAY-09 BA-LA- 140 2.4 15-MAY-09 H-3 163.0 15-MAY-09 1-131 (CHEM) 0.34 24-AUG-09 MN-54 2.5 24-AUG-09 CO-58 1.7 24-AUG-09 FE-59 5.8 24-AUG-09 CO-60 3.0 24-AUG-09 ZN-65 4.8 24-AUG-09 ZR-NB-95 2.8 24-AUG-09 CS-1 34 3.2 24-AUG-09 CS-137 2.1 24-AUG-09 BA-LA-140 2.6 24-AUG-09 H-3 146.0 24-AUG-09 1-131 (CHEM) 0.338 10-NOV-09 MN-54 2.7 10-NOV-09 CO-58 1.8 10-NOV-09 FE-59 5.5 10-NOV-09 CO-60 2.0 10-NOV-09 ZN-65 4.5 10-NOV-09 ZR-NB-95 3.3 10-NOV-09 CS-1 34 2.6 10-NOV-09 CS-137 1.8 2009 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 10-NOV-09 BA-LA- 140 < 1.6 10-NOV-09 H-3 < 150.0 10-NOV-09 1-131 (CHEM) < 0.22 2009 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 18-FEB-09 MN-54 3.3 18-FEB-09 CO-58 2.9 18-FEB-09 FE-59 2.7 18-FEB-09 CO-60 2.3 18-FEB-09 ZN-65 7.3 18-FEB-09 ZR-NB-95 4.0 18-FEB-09 CS-134 2.7 18-FEB-09 CS-1 37 3.5 18-FEB-09 BA-LA- 140 2.8 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.357 13-MAY-09 MN-54 2.2 13-MAY-09 CO-58 1.9 13-MAY-09 FE-59 3.9 13-MAY-09 CO-60 2.7 13-MAY-09 ZN-65 6.3 13-MAY-09 ZR-NB-95 3.2 13-MAY-09 CS-1 34 2.8 13-MAY-09 CS-1 37 2.7 13-MAY-09 BA-LA-140 1.7 13-MAY-09 H-3 155.0 13-MAY-09 1-131 (CHEM) 0.353 24-AUG-09 MN-54 2.9 24-AUG-09 CO-58 2.4 24-AUG-09 FE-59 4.7 24-AUG-09 CO-60 3.1 24-AUG-09 ZN-65 6.7 24-AUG-09 ZR-NB-95 3.3 24-AUG-09 CS-134 3.1 24-AUG-09 CS-1 37 4.3 24-AUG-09 BA-LA-1 40 3.9 24-AUG-09 H-3 147.0 24-AUG-09 1-131 (CHEM) 0.338 10-NOV-09 MN-54 2.3 10-NOV-09 CO-58 2.0 10-NOV-09 FE-59 3.6 10-NOV-09 CO-60 2.2 10-NOV-09 ZN-65 6.2 10-NOV-09 ZR-NB-95 3.5 10-NOV-09 CS-134 2.9 10-NOV-09 CS-1 37 2.9 2009 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 10-NOV-09 BA-LA-140 < 2.2 10-NOV-09 H-3 < 150.0 10-NOV-09 1-131 (CHEM) < 0.293 2009 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 18-FEB-09 MN-54 3.4 18-FEB-09 CO-58 4.2 18-FEB-09 FE-59 10.9 18-FEB-09 CO-60 3.7 18-FEB-09 ZN-65 5.7 18-FEB-09 ZR-NB-95 7.1 18-FEB-09 CS-1 34 5.8 18-FEB-09 CS-1 37 3.9 18-FEB-09 BA-LA-140 3.5 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.362 15-MAY-09 MN-54 1.9 15-MAY-09 CO-58 1.4 15-MAY-09 FE-59 6.1 15-MAY-09 CO-60 1.7 15-MAY-09 ZN-65 5.6 15-MAY-09 ZR-NB-95 3.3 15-MAY-09 CS-1 34 2.4 15-MAY-09 CS-1 37 3.7 15-MAY-09 BA-LA-140 2.5 15-MAY-09 H-3 163.0 15-MAY-09 1-131 (CHEM) 0.292 24-AUG-09 MN-54 2.9 24-AUG-09 CO-58 2.3 24-AUG-09 FE-59 6.7 24-AUG-09 CO-60 2.8 24-AUG-09 ZN-65 7.0 24-AUG-09 ZR-NB-95 3.3 24-AUG-09 CS-1 34 3.2 24-AUG-09 CS-1 37 3.5 24-AUG-09 BA-LA-140 1.9 24-AUG-09 H-3 146.0 24-AUG-09 1-131 (CHEM) 0.391 10-NOV-09 MN-54 1.5 10-NOV-09 CO-58 2.7 10-NOV-09 FE-59 5.0 10-NOV-09 CO-60 2.2 10-NOV-09 ZN-65 6.9 10-NOV-09 ZR-NB-95 4.0 10-NOV-09 CS-134 3.5 10-NOV-09 CS-1 37 3.6 2009 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 (pCilLiter) Analysis 10-NOV-09 BA-LA-1 40 < 3.1 10-NOV-09 H-3 < 150.0 10-NOV-09 1-131 (CHEM) < 0.329, 2009 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 18-FEB-09 MN-54 3.1 18-FEB-09 CO-58 2.2 18-FEB-09 FE-59 6.3 18-FEB-09 CO-60 1.9 18-FEB-09 ZN-65 4.0 18-FEB-09 ZR-NB-95 2.3 18-FEB-09 CS-1 34 3.5 18-FEB-09 CS-137 3.1 18-FEB-09 BA-LA-140 3.1 18-FEB-09 H-3 146.0 18-FEB-09 1-131 (CHEM) 0.349 15-MAY-09 MN-54 2.0 15-MAY-09 CO-58 1.6 15-MAY-09 FE-59 4.0 15-MAY-09 CO-60 2.1 15-MAY-09 ZN-65 5.5 15-MAY-09 ZR-NB-95 2.3 15-MAY-09 CS-1 34 2.6 15-MAY-09 CS-137 2.6 15-MAY-09 BA-LA- 140 3.4 15-MAY-09 H-3 163.0 15-MAY-09 1-131 (CHEM) 0.479 24-AUG-09 MN-54 2.9 24-AUG-09 CO-58 3.0 24-AUG-09 FE-59 5.0 24-AUG-09 CO-60 2.6 24-AUG-09 ZN-65 7.0 24-AUG-09 ZR-NB-95 4.1 24-AUG-09 CS-134 2.6 24-AUG-09 CS-137 3.8 24-AUG-09 BA-LA-140 2.3 24-AUG-09 H-3 146.0 24-AUG-09 1-131 (CHEM) 0.323 10-NOV-09 MN-54 2.0 10-NOV-09 CO-58 3.4 10-NOV-09 FE-59 4.5 10-NOV-09 CO-60 2.5 10-NOV-09 ZN-65 6.0 10-NOV-09 ZR-NB-95 3.2 10-NOV-09 CS-134 3.5 10-NOV-09 CS-137 1.5 2009 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 10-NOV-09 BA-LA-140 < 1.8 10-NOV-09 H-3 < 150.0 10-NOV-09 1-131 (CHEM) < 0.329 2009 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 (pCi/Liter) . Analysis 04-FEB-09 MN-54 2.2 04-FEB-09 MN-54 2.4 Duplicate 04-FEB-09 CO-58 2.2 04-FEB-09 CO-58 2.3 Duplicate 04-FEB-09 FE-59 4.7 04-FEB-09 FE-59 4.9 Duplicate 04-FEB-09 CO-60 2.2 04-FEB-09 CO-60 3.5 Duplicate 04-FEB-09 ZN-65 3.6 04-FEB-09 ZN-65 3.7 Duplicate 04-FEB-09 ZR-NB-95 2.7 04-FEB-09 ZR-NB-95 3.2 Duplicate 04-FEB-09 CS-1 34 2.5 04-FEB-09 CS-1 34 2.717 +/- 3.0 Duplicate 04-FEB-09 CS-1 37 3.0 04-FEB-09 CS-1 37 3.3 Duplicate 04-FEB-09 BA-LA- 140 2.8 04-FEB-09 BA-LA- 140 3.9 Duplicate 04-FEB-09 GROSS BETA 0.648 04-FEB-09 GROSS BETA 3.056 +/- 0.685 Duplicate 04-FEB-09 1-131 (CHEM) 0.364 05-MAR-09 MN-54 2.8 05-MAR-09 CO-58 2.0 05-MAR-09 FE-59 4.3 05-MAR-09 CO-60 1.7 05-MAR-09 ZN-65 2.6 05-MAR-09 ZR-NB-95 2.3 05-MAR-09 CS-134 2.1 05-MAR-09 CS-137 2.3 05-MAR-09 BA-LA-140 2.7 05-MAR-09 GROSS BETA 1.963+/- 0.602 05-MAR-09 1-131 (CHEM) 0.455 01-APR-09 MN-54 2.5 01-APR-09 CO-58 2.2 01-APR-09 FE-59 5.3 01-APR-09 CO-60 2.9 01-APR-09 ZN-65 5.6 01-APR-09 ZR-NB-95 3.1 01-APR-09 CS-134 2.8 01-APR-09 CS-137 4.3 2009 Annual 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 01-APR-09 BA-LA-1 40 3.5 01-APR-09 GROSS BETA 2.051 +/- 0.469 01-APR-09 1-131 (CHEM) 0.268 06-MAY-09 MN-54 1.9 06-MAY-09 CO-58 2.2 06-MAY-09 FE-59 4.4 06-MAY-09 CO-60 1.7 06-MAY-09 ZN-65 4.9 06-MAY-09 ZR-NB-95 1.3 06-MAY-09 CS-134 2.6 06-MAY-09 CS-137 2.1 06-MAY-09 BA-LA-140 2.2 06-MAY-09 GROSS BETA 2.509 +/- 0.679 06-MAY-09 1-131 (CHEM) 0.357 04-JUN-09 MN-54 2.7 04-JUN-09 CO-58 3.4 04-JUN-09 FE-59 5.3 04-JUN-09 CO-60 2.3 04-JUN-09 ZN-65 4.1 04-JUN-09 ZR-NB-95 3.0 04-JUN-09 CS-134 3.5 04-JUN-09 CS-137 4.0 04-JUN-09 BA-LA- 140 2.6 04-JUN-09 GROSS BETA 3.485 +/- 1.151 04-JUN-09 1-131 (CHEM) 0.309 01-JUL-09 MN-54 2.1 01-JUL-09 CO-58 2.4 01-JUL-09 FE-59 5.9 01-JUL-09 CO-60 1.3 01-JUL-09 ZN-65 2.8 01-JUL-09 ZR-NB-95 2.4 01-JUL-09 CS-1 34 4.0 01-JUL-09 CS-1 37 2.7 01-JUL-09 BA-LA-140 2.5 01-JUL-09 GROSS BETA 2.759+/- 1.1 01-JUL-09 1-131 (CHEM) 0.318 05-AUG-09 MN-54 2.3 05-AUG-09 CO-58 3.4 05-AUG-09 FE-59 3.5 05-AUG-09 c0-60 2.0 2009 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 05-AUG-09 ZN-65 5.6 05-AUG-09 ZR-NB-95 3.0 05-AUG-09 CS-134 3.0 05-AUG-09 CS-137 3.4 05-AUG-09 BA-LA-1 40 3.3 05-AUG-09 GROSS BETA 2.311 +/- 0.47 05-AUG-09 1-131 (CHEM) 0.36 09-SEP-09 MN-54 1.6 09-SEP-09 CO-58 2.2 09-SEP-09 FE-59 5.2 09-SEP-09 CO-60 1.6 09-SEP-09 ZN-65 2.9 09-SEP-09 ZR-NB-95 4.3 09-SEP-09 CS-1 34 2.3 09-SEP-09 CS-137 3.2 09-SEP-09 BA-LA-140 3.1 09-SEP-09 GROSS BETA 3.690+/- 1.121 09-SEP-09 1-131 (CHEM) 0.303 05-OCT-09 MN-54 2.2 05-OCT-09 CO-58 1.8 05-OCT-09 FE-59 5.8 05-OCT-09 CO-60 3.4 05-OCT-09 ZN-65 8.6 05-OCT-09 ZR-NB-95 3.2 05-OCT-09 CS-134 2.9 05-OCT-09 CS-137 4.6 05-OCT-09 BA-LA-140 5.2 05-OCT-09 GROSS BETA 3.895 +/- 1.117 05-OCT-09 1-131 (CHEM) 0.223 02-NOV-09 MN-54 3.6 02-NOV-09 CO-58 2.1 02-NOV-09 FE-59 5.5 02-NOV-09 CO-60 2.9 02-NOV-09 ZN-65 3.6 02-NOV-09 ZR-NB-95 3.4 02-NOV-09 CS-134 2.9 02-NOV-09 CS-137 2.9 02-NOV-09 BA-LA-140 2.4 02-NOV-09 GROSS BETA 3.853 +/- 1.153 02-NOV-09 1-131 (CHEM) 0.3 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 47

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 01-DEC-09 MN-54 2.3 01-DEC-09 CO-58 2.1 01-DEC-09 FE-59 5.6 01-DEC-09 CO-60 2.3 01-DEC-09 ZN-65 2.6 01-DEC-09 ZR-NB-95 4.4 01-DEC-09 CS-1 34 2.4 01-DEC-09 CS-1 37 3.2 01-DEC-09 BA-LA- 140 2.2 01-DEC-09 GROSS BETA 2.124 +/- 0.631 01-DEC-09 1-131 (CHEM) 0.26 04-JAN-1 0 MN-54 1.4 04-JAN-1 0 CO-58 1.8 04-JAN-1 0 FE-59 4.3 04-JAN-1 0 CO-60 1.7 04-JAN- 10 ZN-65 2.7 04-JAN- 10 ZR-NB-95 1.8 04-JAN- 10 CS-134 3.0 04-JAN-1 0 CS-1 37 2.8 04-JAN-1 0 BA-LA-140 2.7 04-JAN- 10 GROSS BETA 2.997 +/- 1.102 04-JAN-1 0 1-131 (CHEM) 0.291 2009 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 04-FEB-09 MN-54 2.2 04-FEB-09 CO-58 2.2 04-FEB-09 FE-59 3.7 04-FEB-09 CO-60 1.2 04-FEB-09 ZN-65 3.4 04-FEB-09 ZR-NB-95 1.3 04-FEB-09 CS-1 34 2.3 04-FEB-09 CS-1 37 2.8 04-FEB-09 BA-LA-140 2.3 04-FEB-09 GROSS BETA 2.300+/- 0.688 04-FEB-09 1-131 (CHEM) 0.379 05-MAR-09 MN-54 1.7 05-MAR-09 CO-58 1.6 05-MAR-09 FE-59 2.4 05-MAR-09 CO-60 2.1 05-MAR-09 ZN-65 3.7 05-MAR-09 ZR-NB-95 3.3 05-MAR-09 CS-1 34 2.1 05-MAR-09 CS-1 37 2.2 05-MAR-09 BA-LA-140 1.5 05-MAR-09 GROSS BETA 1.871 +/- 0.596 05-MAR-09 1-131 (CHEM) 0.251 01-APR-09 MN-54 3.1 01-APR-09 CO-58 2.1 01-APR-09 FE-59 3.8 01-APR-09 CO-60 2.4 01-APR-09 ZN-65 2.3 01-APR-09 ZR-NB-95 2.8 01-APR-09 CS-134 2.5 01-APR-09 CS-137 2.9 01-APR-09 BA-LA-140 1.6 01-APR-09 GROSS BETA 1.909+/- 0.631 01-APR-09 1-131 (CHEM) 0.479 06-MAY-09 MN-54 2.6 06-MAY-09 CO-58 2.2 06-MAY-09 FE-59 5.8 06-MAY-09 CO-60 1.7 06-MAY-09 ZN-65 2.1 06-MAY-09 ZR-NB-95 2.4 06-MAY-09 CS-1 34 2.4, 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 49

Exposure Pathway - Waterborne Drinking Water Location 1O-DW Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 06-MAY-09 CS-1 37 < 2.8 06-MAY-09 BA-LA-140 2.3 06-MAY-09 GROSS BETA 2.161 +/- 0.633 06-MAY-09 1-131 (CHEM) 0.362 04-JUN-09 MN-54 < 1.9 04-JUN-09 CO-58 < 1.2 04-JUN-09 FE-59 < 3.4 04-JUN-09 CO-60 < 3.2 04-JUN-09 ZN-65 < 2.9 04-JUN-09 ZR-NB-95 < 2.2 04-JUN-09 CS-1 34 < 2.2 04-JUN-09 CS-1 37 < 2.6 04-JUN-09 BA-LA-140 1.3 04-JUN-09 GROSS BETA 4.705+/- 1.068 04-JUN-09 1-131 (CHEM) 0.313 01-JUL-09 MN-54 3.2 01-JUL-09 CO-58 < 4.0 01-JUL-09 FE-59 < 4.3 01-JUL-09 CO-60 < 2.2 01-JUL-09 ZN-65 < 6.7 01-JUL-09 ZR-NB-95 < 3.4 01-JUL-09 CS-134 < 3.2 01-JUL-09 CS-1 37 < 2.1 01-JUL-09 BA-LA-140 < 5.4 01-JUL-09 GROSS BETA 2.733 +/- 0.364 01-JUL-09 1-131 (CHEM) 0.376 05-AUG-09 MN-54 3.4 05-AUG-09 CO-58 < 3.6 05-AUG-09 FE-59 < 5.0 05-AUG-09 CO-60 < 2.0 05-AUG-09 ZN-65 < 4.4 05-AUG-09 ZR-NB-95 < 2.4 05-AUG-09 CS-1 34 < 3.3 05-AUG-09 CS-137 < 3.9 05-AUG-09 BA-LA-140 < 1.9 05-AUG-09 GROSS BETA 3.441 +/- 0.523 05-AUG-09 1-131 (CHEM) < 0.37 09-SEP-09 MN-54 < 3.1 09-SEP-09 CO-58 < 4.0 09-SEP-09 FE-59 < 6.2 2009 Annual Radiological Environmental Operating Report:

Wolf Creek Generating Station Page C- 50

Exposure Pathway - Waterborne Drinking Water Location IO-DW Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 09-SEP-09 CO-60 2.7 09-SEP-09 ZN-65 4.4 09-SEP-09 ZR-NB-95 3.3 09-SEP-09 CS-1 34 3.1 09-SEP-09 CS-1 37 4.2 09-SEP-09 BA-LA-140 2.4 09-SEP-09 GROSS BETA 4.365 +/- 1.069 09-SEP-09 1-131 (CHEM) 0.286 05-OCT-09 MN-54 6.4 05-OCT-09 CO-58 2.7 05-OCT-09 FE-59 8.7 05-OCT-09 CO-60 3.4 05-OCT-09 ZN-65 3.5 05-OCT-09 ZR-NB-95 3.7 05-OCT-09 CS-1 34 5.2 05-OCT-09 CS-1 37 4.1 05-OCT-09 BA-LA-140 3.6 05-OCT-09 GROSS BETA 4.250 +/- 1.039 05-OCT-09 1-131 (CHEM) 0.221 02-NOV-09 MN-54 4.3 02-NOV-09 CO-58 3.1 02-NOV-09 FE-59 3.6 02-NOV-09 CO-60 2.9 02-NOV-09 ZN-65 5.3 02-NOV-09 ZR-NB-95 4.4 02-NOV-09 CS-1 34 4.4 02-NOV-09 CS-1 37 2.5 02-NOV-09 BA-LA-1 40 4.3 02-NOV-09 GROSS BETA 4.115+/- 1.111 02-NOV-09 1-131 (CHEM) 0.356 01-DEC-09 MN-54 3.0 01-DEC-09 CO-58 3.0 01-DEC-09 FE-59 4.3 01-DEC-09 CO-60 2.4 01-DEC-09 ZN-65 3.7 01-DEC-09 ZR-NB-95 3.4 01-DEC-09 CS-1 34 3.4 01-DEC-09 CS-137 3.3 01-DEC-09 BA-LA-140 3.4 01-DEC-09 GROSS BETA 2.733 +/- 0.688 2009 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 (pCi/Liter) Analysis 01-DEC-09 1-131 (CHEM) 0.319 04-JAN-10 MN-54 2.1 04-JAN-10 MN-54 3.1 04-JAN-10 CO-58 2.1 04-JAN-10 CO-58 3.1 04-JAN-10 FE-59 3.7 04-JAN-10 FE-59 5.2 04-JAN-10 CO-60 1.8 04-JAN- 10 CO-60 2.1 04-JAN-10 ZN-65 4.0 04-JAN-10 ZN-65 6.3 04-JAN-10 ZR-NB-95 2.4 04-JAN-10 ZR-NB-95 1.9 04-JAN-10 CS-1 34 1.9 04-JAN-10 CS-1 34 3.7 04-JAN-10 CS-137 2.6 04-JAN-10 CS-137 4.2 04-JAN-10 BA-LA-1 40 1.9 04-JAN-10 BA-LA- 140 2.1 04-JAN-10 GROSS BETA 2.680+/- 0.997 04-JAN-10 GROSS BETA 3.283 +/- 1.154 04-JAN-10 1-131 (CHEM) 0.291 04-JAN-10 1-131 (CHEM) 0.289 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 52

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location BW-1 5 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 01-APR-09 H-3 < 152 01-JUL-09 H-3 < 148 05-OCT-09 H-3 < 151 04-JAN-1 0 H-3 < 150 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 53

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location 1O-DW Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 01-APR-09 H-3 < 152 01-JUL-09 H-3 < 148 05-OCT-09 H-3 < 151 04-JAN- 10 H-3 < .150 2009 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 (pCi/Kg Dry) 29-MAY-09 K-40 10,923.0 +/- 1,206.0 Duplicate 29-MAY-09 K-40 10,073.0 +/- 1,719.0 29-MAY-09 MN-54 52.7 Duplicate 29-MAY-09 MN-54 101.4 29-MAY-09 CO-58 44.3 Duplicate 29-MAY-09 CO-58 33.2 29-MAY-09 FE-59 113.8 Duplicate 29-MAY-09 FE-59 153.1 29-MAY-09 CO-60 52.0 Duplicate 29-MAY-09 CO-60 42.8 29-MAY-09 ZN-65 95.1 Duplicate 29-MAY-09 ZN-65 156.4 29-MAY-09 CS-134 51.6 Duplicate 29-MAY-09 CS-134 85.4 29-MAY-09 CS-137 65.9 Duplicate 29-MAY-09 CS-137 97.8 23-SEP-09 K-40 12,895.0+- 1,410.0 23-SEP-09 MN-54 75.0 23-SEP-09 CO-58 70.4 23-SEP-09 FE-59 96.9 23-SEP-09 CO-60 46.9 23-SEP-09 ZN-65 127.5 23-SEP-09 CS-134 47.1 23-SEP-09 CS-1 37 85.8 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 55

Exposure Pathway - Waterborne Shoreline Sediment Location JRR Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 04-JUN-09 K-40 10,720.0 +/- 631.5 04-JUN-09 MN-54

• 23.8 04-JUN-09 CO-58

• 19.1 04-JUN-09 FE-59

• 40.2 04-JUN-09 CO-60

• 16.1 04-JUN-09 ZN-65

• 59.5 04-JUN-09 CS-134 < .18.2 04-JUN-09 CS-137 125.5 +/- 31.4 23-SEP-09 K-40 9,936.5 +/- 934.1 Duplicate 23-SEP-09 K-40 10,205.0 +/- 652.1 23-SEP-09 MN-54 < 39.0 Duplicate 23-SEP-09 MN-54 < 28.5 23-SEP-09 CO-58 < 36.6 Duplicate 23-SEP-09 CO-58 < 28.0 23-SEP-09 FE-59 < 37.5 Duplicate 23-SEP-09 FE-59 < 25.9 23-SEP-09 CO-60 < 16.6 Duplicate 23-SEP-09 CO-60 < 19.5 23-SEP-09 ZN-65 < 80.0 Duplicate 23-SEP-09 ZN-65 < 58.2 23-SEP-09 CS-1 34 < 33.1 Duplicate 23-SEP-09 CS-1 34 < 21.3 23-SEP-09 CS-1 37 103.1 +/- 36.4 Duplicate 23-SEP-09 CS-1 37 108.9 +/- 37.9 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 56

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 29-MAY-09 BIGMOUTH BUFFALO K-40 3,194.5 +/- 568.1 29-MAY-09 BIGMOUTH BUFFALO MN-54 12.8 29-MAY-09 BIGMOUTH BUFFALO CO-58 19.1 29-MAY-09 BIGMOUTH BUFFALO FE-59 52.8 29-MAY-09 BIGMOUTH BUFFALO CO-60 14.6 29-MAY-09 BIGMOUTH BUFFALO ZN-65 23.8 29-MAY-09 BIGMOUTH BUFFALO CS-1 34 25.1 29-MAY-09 BIGMOUTH BUFFALO CS-137 20.3 29-MAY-09 BIGMOUTH BUFFALO H-3 7,471 .0 +/- 230.0 29-MAY-09 COMMON CARP K-40 3,185.3 +1- 435.4 29-MAY-09 COMMON CARP MN-54 18.0 29-MAY-09 COMMON CARP CO-58 12.5 29-MAY-09 COMMON CARP FE-59 34.1 29-MAY-09 COMMON CARP CO-60 13.2 29-MAY-09 COMMON CARP ZN-65 16.5 29-MAY-09 COMMON CARP CS-1 34 15.0 29-MAY-09 COMMON CARP CS-1 37 21.2 29-MAY-09 COMMON CARP H-3 7,319.0 +1- 228.0 29-MAY-09 FLATHEAD CATFISH K-40 3,413.4 +1- 505.5 29-MAY-09 FLATHEAD CATFISH MN-54 16.6 29-MAY-09 FLATHEAD CATFISH CO-58 17.3 29-MAY-09 FLATHEAD CATFISH FE-59 41.6 29-MAY-09 FLATHEAD CATFISH CO-60 12.5 29-MAY-09 FLATHEAD CATFISH ZN-65 30.7 29-MAY-09 FLATHEAD CATFISH CS-134 21.8 29-MAY-09 FLATHEAD CATFISH CS-1 37 19.1 29-MAY-09 FLATHEAD CATFISH H-3 7,367.0 +1- 212.0 29-MAY-09 LARGEMOUTH BASS K-40 3,129.7 +1- 393.8 29-MAY-09 LARGEMOUTH BASS MN-54 14.4 29-MAY-09 LARGEMOUTH BASS CO-58 11.6 29-MAY-09 LARGEMOUTH BASS FE-59 8.6 29-MAY-09 LARGEMOUTH BASS CO-60 8.5 29-MAY-09 LARGEMOUTH BASS ZN-65 8.1 29-MAY-09 LARGEMOUTH BASS CS-1 34 8.0 29-MAY-09 LARGEMOUTH BASS CS-137 9.9 29-MAY-09 LARGEMOUTH BASS H-3 6,681.0 +1- 208.0 29-MAY-09 SMALLMOUTH BASS K-40 3,330.4 +1- 469.7 29-MAY-09 SMALLMOUTH BASS MN-54 21.0 29-MAY-09 SMALLMOUTH BASS CO-58 21.0 29-MAY-09 SMALLMOUTH BASS FE-59 34.9 29-MAY-09 SMALLMOUTH BASS CO-60 16.9 2009 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 (pCi/Kg Wet) 29-MAY-09 SMALLMOUTH BASS ZN-65 33.2 29-MAY-09 SMALLMOUTH BASS CS-1 34 27.7 29-MAY-09 SMALLMOUTH BASS CS-1 37 16.5 29-MAY-09 SMALLMOUTH BASS H-3 6,852.0 +/- 206.0 29-MAY-09 SMALLMOUTH BUFFALO K-40 2,916.4 +/- 431.7 29-MAY-09 SMALLMOUTH BUFFALO MN-54 17.0 29-MAY-09 SMALLMOUTH BUFFALO CO-58 8.6 29-MAY-09 SMALLMOUTH BUFFALO FE-59 29.5 29-MAY-09 SMALLMOUTH BUFFALO CO-60 17.8 29-MAY-09 SMALLMOUTH BUFFALO ZN-65 31.0 29-MAY-09 SMALLMOUTH BUFFALO CS-1 34 13.1 29-MAY-09 SMALLMOUTH BUFFALO CS-137 18.5 29-MAY-09 SMALLMOUTH BUFFALO H-3 6,781.0 +1- 222.0 29-MAY-09 WHITE BASS K-40 2,979.7 +1- 509.9 29-MAY-09 WHITE BASS MN-54 18.6 29-MAY-09 WHITE BASS CO-58 15.9 29-MAY-09 WHITE BASS FE-59 35.8 29-MAY-09 WHITE BASS CO-60 10.5 29-MAY-09 WHITE BASS ZN-65 40.5 29-MAY-09 WHITE BASS CS-1 34 22.9 29-MAY-09 WHITE BASS CS-1 37 15.7 29-MAY-09 WHITE BASS H-3 6,820.0 +1- 207.0 15-OCT-09 BIGMOUTH BUFFALO K-40 2,809.7 +/- 398.6 15-OCT-09 BIGMOUTH BUFFALO MN-54 14.1 15-OCT-09 BIGMOUTH BUFFALO CO-58 13.9 15-OCT-09 BIGMOUTH BUFFALO FE-59 44.2 15-OCT-09 BIGMOUTH BUFFALO CO-60 15.2 15-OCT-09 BIGMOUTH BUFFALO ZN-65 33.0 15-OCT-09 BIGMOUTH BUFFALO CS-134 14.8 15-OCT-09 BIGMOUTH BUFFALO CS-1 37 16.9 15-OCT-09 BIGMOUTH BUFFALO H-3 8,379.0 +1- 228.0 15-OCT-09 CHANNEL CATFISH K-40 3,085.4 +/- 471.9 15-OCT-09 CHANNEL CATFISH MN-54 14.8 15-OCT-09 CHANNEL CATFISH CO-58 23.6 15-OCT-09 CHANNEL CATFISH FE-59 40.6 15-OCT-09 CHANNEL CATFISH CO-60 16.3 15-OCT-09 CHANNEL CATFISH ZN-65 40.4 15-OCT-09 CHANNEL CATFISH CS-1 34 15.5 15-OCT-09 CHANNEL CATFISH CS-1 37 13.1 15-OCT-09 CHANNEL CATFISH H-3 9,550.0 +1- 262.0 15-OCT-09 RIVER CARPSUCKER K-40 2,331.2 +/- 532.6 2009 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 (pCi/Kg Wet) 15-OCT-09 RIVER CARPSUCKER MN-54 15.6 15-OCT-09 RIVER CARPSUCKER CO-58 26.2 15-OCT-09 RIVER CARPSUCKER FE-59 44.4 15-OCT-09 RIVER CARPSUCKER CO-60 16.3 15-OCT-09 RIVER CARPSUCKER ZN-65 35.4 15-OCT-09 RIVER CARPSUCKER CS-1 34 16.2 15-OCT-09 RIVER CARPSUCKER CS-1 37 20.7 15-OCT-09 RIVER CARPSUCKER H-3 8,074.0 +1- 227.0 15-OCT-09 SMALLMOUTH BUFFALO K-40 2,956.0 +1- 318.3 15-OCT-09 SMALLMOUTH BUFFALO MN-54 11.5 15-OCT-09 SMALLMOUTH BUFFALO CO-58 8.8 15-OCT-09 SMALLMOUTH BUFFALO FE-59 26.5 15-OCT-09 SMALLMOUTH BUFFALO CO-60 10.6 15-OCT-09 SMALLMOUTH BUFFALO ZN-65 15.8 15-OCT-09 SMALLMOUTH BUFFALO CS-134 12.7 15-OCT-09 SMALLMOUTH BUFFALO CS-137 15.1 15-OCT-09 SMALLMOUTH BUFFALO H-3 8,649.0 +1- 239.0 15-OCT-09 WALLEYE K-40 3,366.8 +1- 408.5

'C 15-OCT-09 WALLEYE MN-54 18.7

'C 15-OCT-09 WALLEYE CO-58 8.9

'C 15-OCT-09 WALLEYE FE-59 25.0

<C 15-OCT-09 WALLEYE CO-60 9.0

<C 15-OCT-09 WALLEYE ZN-65 33.0 15-OCT-09 WALLEYE CS-134 16.4 15-OCT-09 WALLEYE CS-137 15.9 15-OCT-09 WALLEYE H-3 7,760.0 +/- 236.0 15-OCT-09 WHITE BASS K-40 3,439.7 +/- 429.2 15-OCT-09 WHITE BASS MN-54 21.3 15-OCT-09 WHITE BASS CO-58 17.1 15-OCT-09 WHITE BASS FE-59 49.4 15-OCT-09 WHITE BASS CO-60 18.5 15-OCT-09 WHITE BASS ZN-65 28.3 15-OCT-09 WHITE BASS CS-134 13.7 15-OCT-09 WHITE BASS CS-137 11.9 15-OCT-09 WHITE BASS H-3 8,673.0 +/- 243.0 15-OCT-09 WHITE CRAPPIE K-40 3,028.1 +1- 587.3 15-OCT-09 WHITE CRAPPIE MN-54 28.3 15-OCT-09 WHITE CRAPPIE CO-58 34.6 15-OCT-09 WHITE CRAPPIE FE-59 60.1 15-OCT-09 WHITE CRAPPIE CO-60 28.0 15-OCT-09 WHITE CRAPPIE ZN-65 48.2 2009 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) 15-OCT-09 WHITE CRAPPIE CS-134 14.6 15-OCT-09 WHITE CRAPPIE CS-1 37 24.8 15-OCT-09 WHITE CRAPPIE H-3 7,194.0 +/- 233.0 15-OCT-09 WIPER HYBRID K-40 3,091.2 +/- 484.5 Duplicate 15-OCT-09 WIPER HYBRID K-40 3,614.5 +/- 401.6 15-OCT-09 WIPER HYBRID MN-54 24.1 Duplicate 15-OCT-09 WIPER HYBRID MN-54 11.6 15-OCT-09 WIPER HYBRID CO-58 17.6 Duplicate 15-OCT-09 WIPER HYBRID CO-58 14.7 15-OCT-09 WIPER HYBRID FE-59 44.2 Duplicate 15-OCT-09 WIPER HYBRID FE-59 33.5 15-OCT-09 WIPER HYBRID CO-60 15.8 Duplicate 15-OCT-09 WIPER HYBRID CO-60 13.5 15-OCT-09 WIPER HYBRID ZN-65 36.9 Duplicate 15-OCT-09 WIPER HYBRID ZN-65 30.7 15-OCT-09 WIPER HYBRID CS-1 34 14.0 Duplicate 15-OCT-09 WIPER HYBRID CS-134 16.5 15-OCT-09 WIPER HYBRID CS-1 37 21.5 Duplicate 15-OCT-09 WIPER HYBRID CS-1 37 16.5 15-OCT-09 WIPER HYBRID H-3 9,051.0 +/- 252.0 Duplicate 15-OCT-09 WIPER HYBRID H-3 8,895.0 +/- 250.0 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 60

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-MAY-09 CHANNEL CATFISH K-40 2,833.2+/- 355.8 28-MAY-09 CHANNEL CATFISH MN-54 9.4 28-MAY-09 CHANNEL CATFISH CO-58 6.9 28-MAY-09 CHANNEL CATFISH FE-59 12.9 28-MAY-09 CHANNEL CATFISH CO-60 11.7 28-MAY-09 CHANNEL CATFISH ZN-65 12.6 28-MAY-09 CHANNEL CATFISH CS-1 34 12.4 28-MAY-09 CHANNEL CATFISH CS-137 8.1 28-MAY-09 CHANNEL CATFISH H-3 112.0 28-MAY-09 COMMON CARP K-40 3,443.1 +/- 597.3 28-MAY-09 COMMON CARP MN-54 16.2 28-MAY-09 COMMON CARP CO-58 8.9 28-MAY-09 COMMON CARP FE-59 32.9 28-MAY-09 COMMON CARP CO-60 12.3 28-MAY-09 COMMON CARP ZN-65 28.8 28-MAY-09 COMMON CARP CS-1 34 17.8 28-MAY-09 COMMON CARP CS-1 37 22.9 28-MAY-09 COMMON CARP H-3 124.0 28-MAY-09 SMALLMOUTH BUFFALO K-40 2,893.3 +/- 487.6 28-MAY-09 SMALLMOUTH BUFFALO MN-54 18.9 28-MAY-09 SMALLMOUTH BUFFALO CO-58 12.8 28-MAY-09 SMALLMOUTH BUFFALO FE-59 31.7 28-MAY-09 SMALLMOUTH BUFFALO CO-60 11.8 28-MAY-09 SMALLMOUTH BUFFALO ZN-65 38.8 28-MAY-09 SMALLMOUTH BUFFALO CS-134 25.7 28-MAY-09 SMALLMOUTH BUFFALO CS-137 21.7 28-MAY-09 SMALLMOUTH BUFFALO H-3 115.0 23-SEP-09 CHANNEL CATFISH K-40 3,146.6 +/- 383.7 23-SEP-09 CHANNEL CATFISH MN-54 9.3 23-SEP-09 CHANNEL CATFISH CO-58 12.5 23-SEP-09 CHANNEL CATFISH FE-59 29.4 23-SEP-09 CHANNEL CATFISH CO-60 9.3 23-SEP-09 CHANNEL CATFISH ZN-65 20.1 23-SEP-09 CHANNEL CATFISH CS-1 34 15.1 23-SEP-09 CHANNEL CATFISH CS-1 37 10.8 23-SEP-09 CHANNEL CATFISH H-3 117.0 23-SEP-09 COMMON CARP K-40 2,649.7 +/- 356.7 23-SEP-09 COMMON CARP MN-54 13.8 23-SEP-09 COMMON CARP CO-58 16.0 23-SEP-09 COMMON CARP FE-59 15.2 23-SEP-09 COMMON CARP CO-60 10.4 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 61

Exposure Pathway - Ingestion Fish Location JRR Collection Sample luclide Gamma Spectrum & H-3 Duplicate, Date Description Concentration Analysis (pCi/Kg Wet) 23-SEP-09 COMMON CARP ZN-65 30.4 23-SEP-09 COMMON CARP CS-1 34 13.3 23-SEP-09 COMMON CARP CS-137 10.9 23-SEP-09 COMMON CARP H-3 118.0 23-SEP-09 SMALLMOUTH BUFFALO K-40 3,079.2 +/- 353.4 23-SEP-09 SMALLMOUTH BUFFALO MN-54 12.1 23-SEP-09 SMALLMOUTH BUFFALO CO-58 6.1 23-SEP-09 SMALLMOUTH BUFFALO FE-59 13.0 23-SEP-09 SMALLMOUTH BUFFALO CO-60 9.2 23-SEP-09 SMALLMOUTH BUFFALO ZN-65 16.6 23-SEP-09 SMALLMOUTH BUFFALO CS-134 9.2 23-SEP-09 SMALLMOUTH BUFFALO CS-1 37 7.5 23-SEP-09 SMALLMOUTH BUFFALO H-3 121.0 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 62

Exposure Pathway - Ingestion FoodlGarden Location D-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCiIKg Wet) 21 -MAY-09 HORSERADISH LEAVES BE-7 986.9 +/- 238.0 21-MAY-09 HORSERADISH LEAVES K-40 5,583.9 +/- 557.7 21 -MAY-09 HORSERADISH LEAVES MN-54 < 19.4 21 -MAY-09 HORSERADISH LEAVES CO-58 < 12.4 21-MAY-09 HORSERADISH LEAVES FE-59 < 38.1 21-MAY-09 HORSERADISH LEAVES CO-60 < 14.1 21 -MAY-09 HORSERADISH LEAVES ZN-65 < 23.7 21 -MAY-09 HORSERADISH LEAVES ZR-NB-95 < 22.6 21-MAY-09 HORSERADISH LEAVES 1-131 < 34.8 21-MAY-09 HORSERADISH LEAVES CS-1 34 < 13.6 21-MAY-09 HORSERADISH LEAVES CS-1 37 < 21.3 17-JUN-09 HORSERADISH LEAVES BE-7 831.3 +/- 171.1 17-JUN-09 HORSERADISH LEAVES K-40 5,805.1 +/- 434.0 17-JUN-09 HORSERADISH LEAVES MN-54

• 10.2 17-JUN-09 HORSERADISH LEAVES CO-58

• 15.1 17-JUN-09 HORSERADISH LEAVES FE-59

• 15.3 17-JUN-09 HORSERADISH LEAVES CO-60

• 11.4 17-JUN-09 HORSERADISH LEAVES ZN-65

• 21.7 17-JUN-09 HORSERADISH LEAVES ZR-NB-95

• 10.6 17-JUN-09 HORSERADISH LEAVES 1-131

• 19.1 17-JUN-09 HORSERADISH LEAVES CS-1 34

• 11.0 17-JUN-09 HORSERADISH LEAVES CS-1 37 < 8.8 16-JUL-09 HORSERADISH LEAVES BE-7 1,300.4 +/- 233.5 16-JUL-09 HORSERADISH LEAVES K-40 7,742.4 +/- 568.2 16-JUL-09 HORSERADISH LEAVES MN-54

• 15.0 16-JUL-09 HORSERADISH LEAVES CO-58

• 14.5 16-JUL-09 HORSERADISH LEAVES FE-59

• 40.2 16-JUL-09 HORSERADISH LEAVES CO-60 < 8.6 16-JUL-09 HORSERADISH LEAVES ZN-65

• 17.3 16-JUL-09 HORSERADISH LEAVES ZR-NB-95

• 16.8 16-JUL-09 HORSERADISH LEAVES 1-131

• 31.4 16-JUL-09 HORSERADISH LEAVES CS-1 34

• 17.0 16-JUL-09 HORSERADISH LEAVES CS-137

• 10.8 14-AUG-09 HORSERADISH LEAVES BE-7 1,403.3 +/- 242.4 14-AUG-09 HORSERADISH LEAVES K-40 6,201.2 +/- 507.1 14-AUG-09 HORSERADISH. LEAVES MN-54

• 17.1 14-AUG-09 HORSERADISH LEAVES CO-58 < 17.8 14-AUG-09 HORSERADISH LEAVES FE-59

• 33.7 14-AUG-09 HORSERADISH LEAVES CO-60

• 10.5 14-AUG-09 HORSERADISH LEAVES ZN-65

• 29.4 14-AUG-09 HORSERADISH LEAVES ZR-NB-95

• 21.3 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 63

Exposure Pathway - Ingestion FoodlGarden Location D-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 14-AUG-09 HORSERADISH LEAVES 1-131 16.8 14-AUG-09 HORSERADISH LEAVES CS-1 34 13.4 14-AUG-09 HORSERADISH LEAVES CS-137 15.0 28-SEP-09 HORSERADISH LEAVES BE-7 793.5 +/- 188.6 28-SEP-09 HORSERADISH LEAVES K-40 5,409.3 +/- 423.0 28-SEP-09 HORSERADISH LEAVES MN-54 13.0 28-SEP-09 HORSERADISH LEAVES CO-58 12.0 28-SEP-09 HORSERADISH LEAVES FE-59 22.6 28-SEP-09 HORSERADISH LEAVES CO-60 13.8 28-SEP-09 HORSERADISH LEAVES ZN-65 25.3 28-SEP-09 HORSERADISH LEAVES ZR-NB-95 8.6 28-SEP-09 HORSERADISH LEAVES 1-131 27.2 28-SEP-09 HORSERADISH LEAVES CS-1 34 11.6 28-SEP-09 HORSERADISH LEAVES CS-1 37 14.9 19-OCT-09 HORSERADISH LEAVES BE-7 679.0+1 131.4 19-OCT-09 HORSERADISH LEAVES K-40 5,159.0+1 327.5 19-OCT-09 HORSERADISH LEAVES MN-54 9.5 19-OCT-09 HORSERADISH LEAVES CO-58 8.3 19-OCT-09 HORSERADISH LEAVES FE-59 21.6 19-OCT-09 HORSERADISH LEAVES CO-60 7.9 19-OCT-09 HORSERADISH LEAVES ZN-65 8.2 19-OCT-09 HORSERADISH LEAVES ZR-NB-95 5.8 19-OCT-09 HORSERADISH LEAVES 1-131 19.4 19-OCT-09 HORSERADISH LEAVES CS-134 6.5 19-OCT-09 HORSERADISH LEAVES CS-137 8.2 09-NOV-09 HORSERADISH LEAVES BE-7 2,696.8+1 256.8 09-NOV-09 HORSERADISH LEAVES K-40 7,214.3+- 535.3 09-NOV-09 HORSERADISH LEAVES MN-54 10.9 09-NOV-09 HORSERADISH LEAVES CO-58 9.4 09-NOV-09 HORSERADISH LEAVES FE-59 22.8 09-NOV-09 HORSERADISH LEAVES CO-60 15.8 09-NOV-09 HORSERADISH LEAVES ZN-65 19.9 09-NOV-09 HORSERADISH LEAVES ZR-NB-95 9.7 09-NOV-09 HORSERADISH LEAVES 1-131 10.7 09-NOV-09 HORSERADISH LEAVES CS-1 34 12.2 09-NOV-09 HORSERADISH LEAVES CS-1 37 14.1 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 64

Exposure Pathway - Ingestion Food/Garden Location H-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 14-AUG-09 HORSERADISH LEAVES BE-7 1,898.6 +1- 225.4 14-AUG-09 HORSERADISH LEAVES K-40 5,328.0 +1- 441.8 14-AUG-09 HORSERADISH LEAVES MN-54 12.4 14-AUG-09 HORSERADISH LEAVES CO-58 16.4 14-AUG-09 HORSERADISH LEAVES FE-59 27.6 14-AUG-09 HORSERADISH LEAVES CO-60 12.8 14-AUG-09 HORSERADISH LEAVES ZN-65 32.0 14-AUG-09 HORSERADISH LEAVES ZR-NB-95 17.2 14-AUG-09 HORSERADISH LEAVES 1-131 18.1 14-AUG-09 HORSERADISH LEAVES CS-1 34 14.0 14-AUG-09 HORSERADISH LEAVES CS-1 37 14.6 09-NOV-09 HORSERADISH LEAVES BE-7 1,543.2 +1- 220.3 09-NOV-09 HORSERADISH LEAVES K-40 4,325.3 +1- 429.8 09-NOV-09 HORSERADISH LEAVES MN-54 12.2 09-NOV-09 HORSERADISH LEAVES CO-58 9.7 09-NOV-09 HORSERADISH LEAVES FE-59 29.1 09-NOV-09 HORSERADISH LEAVES CO-60 17.6 09-NOV-09 HORSERADISH LEAVES ZN-65 22.5 09-NOV-09 HORSERADISH LEAVES ZR-NB-95 8.5 09-NOV-09 HORSERADISH LEAVES 1-131 13.3 09-NOV-09 HORSERADISH LEAVES CS-1 34 12.3 09-NOV-09 HORSERADISH LEAVES CS-1 37 7.5 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 65

Exposure Pathway - Ingestion Food/Garden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 21-MAY-09 HORSERADISH LEAVES BE-7 1,103.0 +1- 226.3 21-MAY-09 HORSERADISH LEAVES K-40 4,581.3 +1- 472.6 21-MAY-09 HORSERADISH LEAVES MN-54 9.7, 21-MAY-09 HORSERADISH LEAVES CO-58 8.4 21-MAY-09 HORSERADISH LEAVES FE-59 27.4 21-MAY-09 HORSERADISH LEAVES CO-60 11.8 21-MAY-09 HORSERADISH LEAVES ZN-65 26.4 21 -MAY-09 HORSERADISH LEAVES ZR-NB-95 15.4 21 -MAY-09 HORSERADISH LEAVES 1-131 29.4 21 -MAY-09 HORSERADISH LEAVES CS-1 34 8.5 21 -MAY-09 HORSERADISH LEAVES CS-137 18.3 17-JUN-09 HORSERADISH LEAVES BE-7 685.3 +1- 163.9 17-JUN-09 HORSERADISH LEAVES K-40 4,556.1 +1- 386.3 17-JUN-09 HORSERADISH LEAVES MN-54 11.6 17-JUN-09 HORSERADISH LEAVES CO-58 8.1 17-JUN-09 HORSERADISH LEAVES FE-59 28.5 17-JUN-09 HORSERADISH LEAVES CO-60 8.9 17-JUN-09 HORSERADISH LEAVES ZN-65 12.4 17-JUN-09 HORSERADISH LEAVES ZR-NB-95 8.2 17-JUN-09 HORSERADISH LEAVES 1-131 17.3 17-JUN-09 HORSERADISH LEAVES CS-1 34 10.3 17-JUN-09 HORSERADISH LEAVES CS-137 13.2 16-JUL-09 HORSERADISH LEAVES BE-7 1,488.1 +1- 221.3 16-JUL-09 HORSERADISH LEAVES K-40 3,939.0 +1- 441.1 16-JUL-09 HORSERADISH LEAVES MN-54 11.3 16-JUL-09 HORSERADISH LEAVES CO-58 9.8 16-JUL-09 HORSERADISH LEAVES FE-59 36.0 16-JUL-09 HORSERADISH LEAVES CO-60 10.5 16-JUL-09 HORSERADISH LEAVES ZN-65 18.5 16-JUL-09 HORSERADISH LEAVES ZR-NB-95 15.0 16-JUL-09 HORSERADISH LEAVES 1-131 24.9 16-JUL-09 HORSERADISH LEAVES CS-1 34 13.6 16-JUL-09 HORSERADISH LEAVES CS-1 37 13.2 28-SEP-09 HORSERADISH LEAVES BE-7 845.0 +1- 171.8 28-SEP-09 HORSERADISH LEAVES K-40 3,465.5 +1- 393.2 28-SEP-09 HORSERADISH LEAVES MN-54 14.9 28-SEP-09 HORSERADISH LEAVES CO-58 10.4 28-SEP-09 HORSERADISH LEAVES FE-59 20.2 28-SEP-09 HORSERADISH LEAVES CO-60 14.4 28-SEP-09 HORSERADISH LEAVES ZN-65 12.2 28-SEP-09 HORSERADISH LEAVES ZR-NB-95 14.8 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 66

Exposure Pathway - Ingestion Food/Garden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-SEP-09 HORSERADISH LEAVES 1-131 23.9 28-SEP-09 HORSERADISH LEAVES CS-134 11.8 28-SEP-09 HORSERADISH LEAVES CS-137 14.6 19-OCT-09 HORSERADISH LEAVES BE-7 603.6 +1- 114.6 19-OCT-09 HORSERADISH LEAVES K-40 2,886.5 +1- 257.8 19-OCT-09 HORSERADISH LEAVES MN-54 9.9 19-OCT-09 HORSERADISH LEAVES CO-58 9.5 19-OCT-09 HORSERADISH LEAVES FE-59 22.3 19-OCT-09 HORSERADISH LEAVES CO-60 9.1 19-OCT-09 HORSERADISH LEAVES ZN-65 16.1 19-OCT-09 HORSERADISH LEAVES ZR-NB-95 8.0 19-OCT-09 HORSERADISH LEAVES 1-131 14.0 19-OCT-09 HORSERADISH LEAVES CS-1 34 7.2 19-OCT-09 HORSERADISH LEAVES CS-137 8.2 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 67

Exposure Pathway - Ingestion FoodlGarden Location Q-6 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCilKg Wet) 21-MAY-09 HORSERADISH LEAVES BE-7 686.9 +/- 251.7 21-MAY-09 HORSERADISH LEAVES K-40 6,681.9 +/- 663.8 21-MAY-09 HORSERADISH LEAVES MN-54

• 17.6 21-MAY-09 HORSERADISH LEAVES CO-58

• 11.6 21-MAY-09 HORSERADISH LEAVES FE-59

• 43.8 21-MAY-09 HORSERADISH LEAVES CO-60

• 16.0 21 -MAY-09 HORSERADISH LEAVES ZN-65

• 43.3 21 -MAY-09 HORSERADISH LEAVES ZR-NB-95

• 22.0 21-MAY-09 HORSERADISH LEAVES 1-131

• 45.8 21-MAY-09 HORSERADISH LEAVES CS-134

• 17.2 21 -MAY-09 HORSERADISH LEAVES CS-1 37

• 20.4 17-JUN-09 HORSERADISH LEAVES BE-7 927.9 +/- 194.4 17-JUN-09 HORSERADISH LEAVES K-40 5,986.0 +/- 481.5 17-JUN-09 HORSERADISH LEAVES MN-54 < 12.6 17-JUN-09 HORSERADISH LEAVES CO-58 < 8.0 17-JUN-09 HORSERADISH LEAVES FE-59 < 35.2 17-JUN-09 HORSERADISH LEAVES CO-60 < 14.4 17-JUN-09 HORSERADISH LEAVES ZN-65 < 26.4 17-JUN-09 HORSERADISH LEAVES ZR-NB-95 < 17.6 17-JUN-09 HORSERADISH LEAVES 1-131 < 28.9 17-JUN-09 HORSERADISH LEAVES CS-1 34 < 13.6 17-JUN-09 HORSERADISH LEAVES CS-137 < 8.2 16-JUL-09 HORSERADISH LEAVES BE-7 1,245.1 +/- 226.2 16-JUL-09 HORSERADISH LEAVES K-40 7,468.0 +/- 568.5 16-JUL-09 HORSERADISH LEAVES MN-54

• 19.4 16-JUL-09 HORSERADISH LEAVES CO-58

• 11.7 16-JUL-09 HORSERADISH LEAVES FE-59

• 23.8 16-JUL-09 HORSERADISH LEAVES CO-60

• 12.0 16-JUL-09 HORSERADISH LEAVES ZN-65

• 33.2 16-JUL-09 HORSERADISH LEAVES ZR-NB-95

• 15.5 16-JUL-09 HORSERADISH LEAVES 1-131

• 19.9 16-JUL-09 HORSERADISH LEAVES CS-1 34

• 12.7 16-JUL-09 HORSERADISH LEAVES CS-137

• 16.4 14-AUG-09 HORSERADISH LEAVES BE-7 1,428.7 +/1- 244.2 14-AUG-09 HORSERADISH LEAVES K-40 5,193.4 +/- 489.8 14-AUG-09 HORSERADISH LEAVES MN-54 < 17.6 14-AUG-09 HORSERADISH LEAVES CO-58 < 9.8 14-AUG-09 HORSERADISH LEAVES FE-59 < 37.2 14-AUG-09 HORSERADISH LEAVES CO-60 < 10.2 14-AUG-09 HORSERADISH LEAVES ZN-65 < 29.8 14-AUG-09 HORSERADISH LEAVES ZR-NB-95 < 18.7 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 68

Exposure Pathway - Ingestion Food/Garden Location Q-6 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 14-AUG-09 HORSERADISH LEAVES 1-131 29.4 14-AUG-09 HORSERADISH LEAVES CS-134 14.0 14-AUG-09 HORSERADISH LEAVES CS-137 11.6 28-SEP-09 HORSERADISH LEAVES BE-7 1,440.0 +/- 236.1 28-SEP-09 HORSERADISH LEAVES K-40 4,739.0 +/- 511.8 28-SEP-09 HORSERADISH LEAVES MN-54 15.0 28-SEP-09 HORSERADISH LEAVES CO-58 14.8 28-SEP-09 HORSERADISH LEAVES FE-59 29.8 28-SEP-09 HORSERADISH LEAVES CO-60 15.6 28-SEP-09 HORSERADISH LEAVES ZN-65 23.9 28-SEP-09 HORSERADISH LEAVES ZR-NB-95 18.6 28-SEP-09 HORSERADISH LEAVES 1-131 28.3 28-SEP-09 HORSERADISH LEAVES CS-1 34 13.1 28-SEP-09 HORSERADISH LEAVES CS-137 21.1 19-OCT-09 LETTUCE BE-7 470.8+1 92.0 19-OCT-09 LETTUCE K-40 5,531.9+1 324.5 19-OCT-09 LETTUCE MN-54 9.5 19-OCT-09 LETTUCE CO-58 9.3 19-OCT-09 LETTUCE FE-59 20.3 19-OCT-09 LETTUCE CO-60 7.7 19-OCT-09 LETTUCE ZN-65 9.6 19-OCT-09 LETTUCE ZR-NB-95 5.3 19-OCT-09 LETTUCE 1-131 8.6 19-OCT-09 LETTUCE CS-1 34 8.9 19-OCT-09 LETTUCE CS-1 37 8.6 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 69

Exposure Pathway - Ingestion Feed and Forage Location NR-DI Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 01-DEC-09 IRRIGATED SOYBEANS BE-7 73.5 01-DEC-09 IRRIGATED SOYBEANS K-40 12,979.0 +/- 431.7 01-DEC-09 IRRIGATED SOYBEANS MN-54 8.1 01-DEC-09 IRRIGATED SOYBEANS CO-58 9.3 01-DEC-09 IRRIGATED SOYBEANS FE-59 20.9 01-DEC-09 IRRIGATED SOYBEANS CO-60 8.0 01-DEC-09 IRRIGATED SOYBEANS ZN-65 27.3 01-DEC-09 IRRIGATED SOYBEANS ZR-NB-95 9.0 01-DEC-09 IRRIGATED SOYBEANS 1-131 20.0 01-DEC-09 IRRIGATED SOYBEANS CS-1 34 7.3 01-DEC-09 IRRIGATED SOYBEANS CS-137 10.5 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 70

Exposure Pathway - Ingestion Feed and Forage Location NR-D2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 09-NOV-09 IRRIGATED CORN BE-7 81.1 09-NOV-09 IRRIGATED CORN K-40 2,944.9 +/- 240.4 09-NpV-09 IRRIGATED CORN MN-54 8.6 09-NOV-09 IRRIGATED CORN CO-58 8.9 09-NOV-09 IRRIGATED CORN FE-59 27.0 09-NOV-09 IRRIGATED CORN CO-60 9.1 09-NOV-09 IRRIGATED CORN ZN-65 15.0 09-NOV-09 IRRIGATED CORN ZR-NB-95 7.9 09-NOV-09 IRRIGATED CORN 1-131 99.6 09-NOV-09 IRRIGATED CORN CS-1 34 7.0 09-NOV-09 IRRIGATED CORN CS-1 37 7.7 05-NOV-09 IRRIGATED SOYBEANS BE-7 109.7 05-NOV-09 IRRIGATED SOYBEANS K-40 13,457.0 +/- 402.7 05-NOV-09 IRRIGATED SOYBEANS MN-54 7.9 05-NOV-09 IRRIGATED SOYBEANS CO-58 11.7 05-NOV-09 IRRIGATED SOYBEANS FE-59 40.4 05-NOV-09 IRRIGATED SOYBEANS CO-60 11.1 05-NOV-09 IRRIGATED SOYBEANS ZN-65 32.6 05-NOV-09 IRRIGATED SOYBEANS ZR-NB-95 18.3 05-NOV-09 IRRIGATED SOYBEANS 1-131 182.5 05-NOV-09 IRRIGATED SOYBEANS CS-134 7.1 05-NOV-09 IRRIGATED SOYBEANS CS-137 9.4 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 71

Exposure Pathway - Ingestion Feed and Forage Location NR-U1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 27-NOV-09 IRRIGATED CORN BE-7 48.3 27-NOV-09 IRRIGATED CORN K-40 2,597.0 +/- 247.4 27-NOV-09 IRRIGATED CORN MN-54 6.0 27-NOV-09 IRRIGATED CORN CO-58 4.9 27-NOV-09 IRRIGATED CORN FE-59 12.9 27-NOV-09 IRRIGATED CORN CO-60 5.8 27-NOV-09 IRRIGATED CORN ZN-65 11.9 27-NOV-09 IRRIGATED CORN ZR-NB-95 6.7 27-NOV-09 IRRIGATED CORN 1-131 26.0 27-NOV-09 IRRIGATED CORN CS-1 34 7.6 27-NOV-09 IRRIGATED CORN CS-1 37 9.5 27-NOV-09 IRRIGATED SOYBEANS BE-7 70.0 27-NOV-09 IRRIGATED SOYBEANS' K-40 11,934.0+!- 390.8 27-NOV-09 IRRIGATED SOYBEANS MN-54 9.9 27-NOV-09 IRRIGATED SOYBEANS CO-58 5.5 27-NOV-09 IRRIGATED SOYBEANS FE-59 15.9 27-NOV-09 IRRIGATED SOYBEANS CO-60 9.3 27-NOV-09 IRRIGATED SOYBEANS ZN-65 21.7 27-NOV-09 IRRIGATED SOYBEANS ZR-NB-95 8.5 27-NOV-09 IRRIGATED SOYBEANS 1-131 20.5 27-NOV-09 IRRIGATED SOYBEANS CS-134 6.9 27-NOV-09 IRRIGATED SOYBEANS CS-1 37 8.3 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 72

Exposure Pathway - Aquatic Bottom Sediment Location DC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 29-MAY-09 K-40 13,568.0 +/- 1,362.0 29-MAY-09 MN-54 < 68.4 29-MAY-09 CO-58 < 38.5 29-MAY-09 FE-59 < 98.4 29-MAY-09 CO-60 < 36.2 29-MAY-09 ZN-65 < 99.9 29-MAY-09 CS-1 34 < 27.8 29-MAY-09 CS-1 37 169.4 +/- 82.3 23-SEP-09 K-40 13,297.0 +/- 805.9 23-SEP-09 MN-54 < 30.3 23-SEP-09 CO-58 < 26.1 23-SEP-09 FE-59 < 46.8 23-SEP-09 CO-60 57.9 +/- 25.8 23-SEP-09 ZN-65 < 46.3 23-SEP-09 CS-134 < 20.3 23-SEP-09 CS-1 37 125.5 +/- 24.6 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 73

Exposure Pathway - Aquatic Bottom Sediment Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-MAY-09 K-40 11,247.0 +/- 702.9 26-MAY-09 K-40 11,096.0 +/- 807.3 26-MAY-09 MN-54 < 26.4 26-MAY-09 MN-54 < 24.7 26-MAY-09 CO-58 < 20.2 26-MAY-09 CO-58 < 24.4 26-MAY-09 FE-59 < 51.8 26-MAY-09 FE-59 < 34.2 26-MAY-09 CO-60 < 17.6 26-MAY-09 CO-60 < 6.8 26-M*AY-09 ZN-65 < 47.6 26-MAY-09 ZN-65 < 61.7 26-MAY-09 CS-1 34 < 17.5 26-MAY-09 CS-1 34 < 11.8 26-MAY-09 CS-137 51.3 +/- 23.6 26-MAY-09 CS-1 37 76.5 +/- 31.4 14-AUG-09 K-40 11,E563.0 +/- 761.2 14-AUG-09 MN-54 < 24.1 14-AUG-09 CO-58 17.9 14-AUG-09 FE-59 < 37.8 14-AUG-09 CO-60 < 26.7 14-AUG-09 ZN-65 < 47.7 14-AUG-09 CS-1 34 < 17.9 14-AUG-09 CS-1 37 82.4 +/- 33.0 2009 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 (pCilKg Dry) 04-JUN-09 K-40 17,563.0 +/- 1,359.0 04-JUN-09 MN-54 < 53.8 04-JUN-09 CO-58 < 30.6 04-JUN-09 FE-59 < 117.3 04-JUN-09 CO-60 < 36.1 04-JUN-09 ZN-65 < 113.9 04-JUN-09 CS-1 34 < 55.8 04-JUN-09 CS-1 37 138.0 +/- 57.4 23-SEP-09 K-40 14,224.0 +/- 1,250.0 23-SEP-09 MN-54 < 44.9 23-SEP-09 CO-58 < 55.8 23-SEP-09 FE-59 < 62.5 23-SEP-09 CO-60 < 28.6 23-SEP-09 ZN-65 < 89.1 23-SEP-09 CS-1 34 < 36.6 23-SEP-09 CS-1 37 < 53.0 2009 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) 29-MAY-09 K-40 9,825.8 +/- 864.9 29-MAY-09 MN-54 < 40.4 29-MAY-09 CO-58 < 26.0 29-MAY-09 FE-59 < 60.8 29-MAY-09 CO-60 < 23.1 29-MAY-09 ZN-65 < 68.9 29-MAY-09 CS-1 34 < 31.4 29-MAY-09 CS-1 37 < 38.3 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 76

Exposure Pathway - Aquatic Vegetation Location EEA Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 26-MAY-09 WATER PRIMROSE BE-7 972.2 +*/- 152.3 26-MAY-09 WATER PRIMROSE K-40 1,419.3 +*I- 232.2 26-MAY-09 WATER PRIMROSE MN-54 < 12.7 26-MAY-09 WATER PRIMROSE CO-58 < 8.4 26-MAY-09 WATER PRIMROSE FE-59 < 13.9 26-MAY-09 WATER PRIMROSE CO-60 < 8.0 26-MAY-09 WATER PRIMROSE ZN-65 < 16.4 26-MAY-09 WATER PRIMROSE ZR-NB-95 < 8.7 26-MAY-09 WATER PRIMROSE 1-131 < 22.7 26-MAY-09 WATER PRIMROSE CS-1 34 < 10.1 26-MAY-09 WATER PRIMROSE CS-1 37 < 14.8 29-MAY-09 AMERICAN LOTUS BE-7 < 184.7 29-MAY-09 AMERICAN LOTUS K-40 3,860.0 +-/- 407.6 29-MAY-09 AMERICAN LOTUS MN-54 < 15.2 29-MAY-09 AMERICAN LOTUS CO-58 < 8.4 29-MAY-09 AMERICAN LOTUS FE-59 < 21.0 29-MAY-09 AMERICAN LOTUS CO-60 < 9.5 29-MAY-09 AMERICAN LOTUS ZN-65 < 21.5 29-MAY-09 AMERICAN LOTUS ZR-NB-95 < 13.9 29-MAY-09 AMERICAN LOTUS 1-131 < 21.7 29-MAY-09 AMERICAN LOTUS CS-1 34 < 16.1 29-MAY-09 AMERICAN LOTUS CS-1 37 < 18.7 14-AUG-09 ARROWHEAD BE-7 < 200.5 14-AUG-09 ARROWHEAD K-40 5,171.0 4 -/- 452.5 14-AUG-09 ARROWHEAD MN-54 < 18.0 14-AUG-09 ARROWHEAD CO-58 < 11.6 14-AUG-09 ARROWHEAD FE-59 < 38.3 14-AUG-09 ARROWHEAD CO-60 < 14.8 14-AUG-09 ARROWHEAD ZN-65 < 19.4 14-AUG-09 ARROWHEAD ZR-NB-95 < 19.4 14-AUG-09 ARROWHEAD 1-131 < 24.9 14-AUG-09 ARROWHEAD CS-134 < 12.6 14-AUG-09 ARROWHEAD CS-137 < 19.1 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 77

Exposure Pathway - Aquatic Vegetation Location MUDS Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 08-SEP-09 PONDWEED BE-7 949.7 +/- 165.7 Duplicate 08-SEP-09 PONDWEED BE-7 +/-

931.4 183.0 08-SEP-09 PONDWEED +1-K-40 2,473.8 294.2 Duplicate 08-SEP-09 PONDWEED K-40 2,501.5 +/-

259.0 08-SEP-09 PONDWEED MN-54 9.5 Duplicate 08-SEP-09 PONDWEED MN-54 13.0 08-SEP-09 PONDWEED CO-58 9.0 Duplicate 08-SEP-09 PONDWEED CO-58 6.9 08-SEP-09 PONDWEED FE-59 16.8 Duplicate 08-SEP-09 PONDWEED FE-59 25.2 08-SEP-09 PONDWEED CO-60 8.1 Duplicate 08-SEP-09 PONDWEED CO-60 9.8 08-SEP-09 PONDWEED ZN-65 17.3 Duplicate 08-SEP-09 PONDWEED ZN-65 20.2 08-SEP-09 PONDWEED ZR-NB-95 16.3 Duplicate 08-SEP-09 PONDWEED ZR-NB-95 8.9 08-SEP-09 PONDWEED 1-131 34.5 Duplicate 08-SEP-09 PONDWEED 1-131 22.0 08-SEP-09 PONDWEED CS-134 10.6 Duplicate 08-SEP-09 PONDWEED CS-1 34 9.5 08-SEP-09 PONDWEED CS-1 37 14.8 Duplicate 08-SEP-09 PONDWEED CS-1 37 11.2 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 78

Exposure Pathway - Terrestrial Vegetation Location EEA Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 26-MAY-09 GRASS BE-7 466.8 +/- 153.4 26-MAY-09 GRASS K-40 6,429.0 +/- 453.1 26-MAY-09 GRASS MN-54 14.5 26-MAY-09 GRASS CO-58 10.1 26-MAY-09 GRASS FE-59 19.8 26-MAY-09 GRASS CO-60 8.4 26-MAY-09 GRASS ZN-65 31.0 26-MAY-09 GRASS ZR-NB-95 9.1 26-MAY-09 GRASS 1-131 24.0 26-MAY-09 GRASS CS-1 34 14.7 26-MAY-09 GRASS CS-I 37 11.4 14-AUG-09 GRASS BE-7 4,592.8 +/- 313.2 14-AUG-09 GRASS K-40 10,264.0 +/- 621.4 14-AUG-09 GRASS MN-54 18.6 14-AUG-09 GRASS CO-58 21.1 14-AUG-09 GRASS FE-59 56.8 14-AUG-09 GRASS CO-60 15.8 14-AUG-09 GRASS ZN-65 37.0 14-AUG-09 GRASS ZR-NB-95 17.9 14-AUG-09 GRASS 1-131 30.3 14-AUG-09 GRASS CS-1 34 18.8 14-AUG-09 GRASS CS-1 37 20.3 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 79

Exposure Pathway - Terrestrial Vegetation Location MUDS Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 29-MAY-09 GRASS BE-7 696.0 +/- 178.6 29-MAY-09 GRASS K-40 5,542.3 +/- 470.7 29-MAY-09 GRASS MN-54 < 12.4 29-MAY-09 GRASS CO-58 < 11.8 29-MAY-09 GRASS FE-59 < 21.7 29-MAY-09 GRASS CO-60

• 15.1 29-MAY-09 GRASS ZN-65 < 28.6 29-MAY-09 GRASS ZR-NB-95 < 12.5 29-MAY-09 GRASS 1-131 < 30.8 29-MAY-09 GRASS CS-134 < 16.5 29-MAY-09 GRASS CS-1 37 < 11.2 08-SEP-09 GRASS BE-7 1,421.2+/- 186.3 08-SEP-09 GRASS K-40 4,505.5+/- 412.3 08-SEP-09 GRASS MN-54 < 11.9 08-SEP-09 GRASS CO-58 < 10.1 08-SEP-09 GRASS FE-59 < 25.1 08-SEP-09 GRASS CO-60 < 12.0 08-SEP-09 GRASS ZN-65 < 21.8 08-SEP-09 GRASS ZR-NB-95 < 13.9 08-SEP-09 GRASS 1-131 < 23.4 08-SEP-09 GRASS CS-134 < 9.2 08-SEP-09 GRASS CS-137 < 14.8 2009 Annual Radiological Environmental Operating Report

. Wolf Creek Generating Station Page C- 80

Exposure Pathway - Terrestrial Soil Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-MAY-09 K-40 13,195.0+/ 805.9 26-MAY-09 MN-54 33.8 26-MAY-09 CO-58 22.1 26-MAY-09 FE-59 29.0 26-MAY-09 CO-60 17.4 26-MAY-09 ZN-65 37.3 26-MAY-09 CS-1 34 22.3 26-MAY-09 CS-1 37 27.2 14-AUG-09 K-40 13,458.0 1 802.0 Duplicate 14-AUG-09 K-40 13,405.0+- 771.0 14-AUG-09 MN-54 34.6 Duplicate 14-AUG-09 MN-54 26.4 14-AUG-09 CO-58 13.5 Duplicate 14-AUG-09 CO-58 26.0 14-AUG-09 FE-59 44.2 Duplicate 14-AUG-09 FE-59 43.8 14-AUG-09 CO-60 20.6 Duplicate 14-AUG-09 CO-60 26.4 14-AUG-09 ZN-65 64.7 Duplicate 14-AUG-09 ZN-65 53.0 14-AUG-09 CS-1 34 17.2 Duplicate 14-AUG-09 CS-134 20.8 14-AUG-09 CS-1 37 279.5+1 45.5 Duplicate 14-AUG-09 CS-1 37 285.2 iI 45.9 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 81

Exposure Pathway - Terrestrial Soil Location MUDS Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 09-JAN-09 K-40 11,515.0 +/- 753.8 09-JAN-09 MN-54 < 32.4 09-JAN-09 CO-58 < 31.8 09-JAN-09 FE-59 < 51.1 09-JAN-09 CO-60 < 19.1 09-JAN-09 ZN-65 < 68.3 09-JAN-09 CS-1 34 < 26.8 09-JAN-09 CS-1 37 405.1 +/- 41.4 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 82

Exposure Pathway - Ingestion Deer Location B1.0 Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet)

I 28-OCT-09 DEER K-40 2,379.0 +/- 364.7 28-OCT-09 DEER MN-54 6.9 28-OCT-09 DEER CO-58 6.7 28-OCT-09 DEER FE-59 23.7 28-OCT-09 DEER CO-60 10.7 28-OCT-09 DEER ZN-65 15.0 28-OCT-09 DEER CS-1 34 7.3 28-OCT-09 DEER CS-1 37 25.1 +/- 12.9 28-OCT-09 DEER H-3 496.0+/-f- 81.0 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 83

Exposure Pathway - Ingestion Deer Location R2.5 Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 20-FEB-09 DEER K-40 2,970.0+/- 361.1 20-FEB-09 DEER MN-54 < 12.7 20-FEB-09 DEER CO-58 < 11.4 20-FEB-09 DEER FE-59 < 12.7 20-FEB-09 DEER CO-60 < 7.6 20-FEB-09 DEER ZN-65 12.3 20-FEB-09 DEER CS-134 12.1 20-FEB-09 DEER CS-1 37 9.9 20-FEB-09 DEER H-3 218.0 +/- 66.0 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 84

WOLF CREEK GENERATING STATION 2009 LAND USE CENSUS REPORT Prepared by:

09-17-2009 Teresa L. Rice Date Peer Review:

09-29-2009 Ralph L. Logsdon Date Approved by: 09-30-2009 Robert A. Hammond Date 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 1

EXECUTIVE

SUMMARY

The annual Land Use Census of rural residents within five miles of the Wolf Creek Generating Station (WCGS) has been completed for 2009 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, L2.39-NARD1309 and N2.38-RODR9, respectively. Samples are currently being obtained from locations Q2.35-MILA1619 and N2.38-RODR9. The garden at L2.39-NARD1 309 will not be added to the sample program for the following reasons:

• The difference between the calculated D/Qs for locations L2.39-NARD1309 and N2.38-RODR9 is less than twenty percent.

" The landowner at location L2.39-NARD1309 has not responded to previous requests to add the garden to the REMP sample program.

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."

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 2

METHODOLOGY Two hundred fifteen 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 1-1 Calculations were performed so that garden locations could be ranked by their respective D/Q.

These results are contained in Table 4.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 3

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

Four changes were noted for the nearest occupied residences in each sector. Those changes were in sectors B, E, F and M.

Nine 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.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 4

TABLE 1 2009 Land Use Census Data Location of Nearest:

Sector Residence Milking Animals Broadleaf Garden A A2.60-17TE1 520 None A4.91 -OXRD1940 B B3.53-QURD1755 None None C C1.92-16RD1655 None C3.58-RERD1675 D D2.03-QULA1571 None D3.00-16RD1829 E E1.78-QULA1451 None E4.40-TRRD1551 F F2.39-14RD1802 None F2.39-14RD1802 G G3.03-13RD1820 None G3.77-12RD1 831 H H3.09-12RD1711 None H3.30-QURD1 175 J J3.70-11 RD1540 None J3.90-1 1RD1531 K K2.70-12LA1 439 None .None L L2. 10-NARD1339 None L2.39-NARD1309 M M2.34-14RD1330 None M2.34-14RD1330 N N1.71-NARD1441 None N2.38-RODR9 P P2.76-HW751534 None P2.76-HW751534 Q Q2.35-MILA1619 None Q2.35-MILA1619 R R2.08-NALN1650 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 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 5

TABLE 2 SECTOR 2008 NEAREST 2009 NEAREST RESIDENCE RESIDENCE A A2.60-17TE1520 A2.60-17TE1 520 B B1.86-PLRD16XX B3.53-QURD1755 C C1.92-16RD1655 C1.92-16RD1655 D D2.03-QULA1 571 D2.03-QULA1 571 E E1.77-QULA1485 E1.78-QULA1451 F F1.76-14RD1730 F2.39-14RD1802 G G3.03-13RD1820 G3.03-13RD1820 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 M2.47-14RD1322 M2.34-14RD1330 N N1.71-NARD1441 N1.71-NARD1441 P P2.76-HW751534 P2.76-HW751534 Q Q2.35-MILA1619 Q2.35-MILA1619 R R2.08-NALN1650 R2.08-NALN1650 NOTE: Entries underlined indicate changes from the 2008 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.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 6

TABLE 3 2009 Land Use Census Milk and Garden Data SECTOR 2008 2009 2008 CLOSEST 2009 CLOSEST MILKING MILKING GARDEN GARDEN ANIMALS ANIMALS PRODUCING PRODUCING BROADLEAF BROADLEAF VEGETATION VEGETATION A None None A4.91 -OXRD1940 A4.91 -OXRD1940 B None None B3.53-QURD1755 None C None None C3.16-QURD1712 C3.58-RERD1675 D None None D3.00-16RD1829 D3.00-16RD1829 E None None None E4.40-TRRD1551 F None None F2.44-RERD1391 F2.39-14RD1802 G None None G3.66-12RD1814 G3.77-12RD1831 H None None H3.30-QURD1175 H3.30-QU RD1175 J None None J3.80-11RD1535 J3.90-11RD1531 K None None None None L None None L2.83-NARD1250 L2.39-NARD1309 M None None M3.78-LYRD1390 M2.34-14RD1330 N None None N2.38-RODR9 N2.38-RODR9 P None None P2.99-SOST100 P2.76-HW751534 Q None None Q2.35-MILA1619 Q2.35-MILA1619 R None None None None NOTE: Underlined entries indicate changes from the 2008 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.

2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 7

TABLE 4 Information Used for D/Q Calculations FROM LAND FROM USE CENSUS SA-07-001 CAL DIST CALC NEARI NEAR FAR FAR SECTOR D/Q

• 20%

SECTOR (MI) (METERS) DIST D/0 DIST D/0 CALC RANKING A 4.91 7902 7000 6.95E-10 8000 5.61E-10 5.74E-10 5 6.89E-10 B 0 0 C 3.58 5761 5000 2.77E-10 6000 2.03E-10 2.21E-10 11 2.65E-10 D 3.00 4828 4000 2.71E-10 5000 1.85E-10 2.OOE-10 12 2.40E-10 E 4.40 7081 7000 1.25E-10 8000 1.01E-10 1.23E-10 13 1.48E-10 F 2.39 3846 3000 6.99E-10 4000 4.20E-10 4.63E-10 8 5.556E-10 G 3.77 6067 6000 3.46E-10 7000 2.57E-10 3.40E-10 10 4.08E-10 H 3.30 5311 5000 5.66E-10 6000 4.16E-10 5.19E-10 7 6.23E-10 J 3.90 6276 6000 4.62E-10 7000 3.43E-10 4.29E-10 9 5.15E-10 K 0 0 L 2.39 3846 3000 1.15E-09 4000 6.91E-10 7.62E-10 2 9.14E-10 M 2.34 3766 3000 8.54E-10 4000 5.13E-10 5.93E-10 4 7.12E-10 N 2.38 3830 3000 1.11E-09 4000 6.67E-10 7.42E-10 3 8.90E-10 P 2.76 4442 4000 6.23E-10 5000 4.24E-10 5.35E-10 6 6.42E-10 Q 2.35 3782 3000 1.45E-09, 4000 8.68E-10 9.95E-10 1 1.19E-09 R 0 0 1 1 1 1 1 1_

Originated by: Date: 09-17-2009 Verified by: Date: 09-29-2009 2009 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 8