ML091180578

2008 Annual Radiological Environmental Operating Report

ML091180578
Person / Time
Site:	Wolf Creek
Issue date:	04/21/2009
From:	Flannigan R Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 09-0059
Download: ML091180578 (159)

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W FCREEK NUCLEAR OPERATING CORPORATION Richard D. Flannigan Manager Regulatory Affairs April 21 , 2009 RA 09-0059 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: 2008 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, 2008, through December 31, 2008.

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:

2008 Annual Radiological Environmental Operating Report cc: E. E. Collins (NRC), w/e V. G. Gaddy (NRC), w/e B. K. Singal (NRC), w/e Senior Resident Inspector (NRC), w/e PO. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831 An Equal Opportunity Employer M/F/HCNET

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION 2008 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT V

April 15, 2009

TABLE OF CONTENTS List of Tables ii List of Figures ii List of Charts ii Executive Summary 1 Introduction 1 I. Program Description 1 I1. Discussion of Results 4 Ill. Program Revisions/Changes 10 IV. Program Deviations 10 V. Interlaboratory Comparison Program Results 11 VI. Comparison to the Radioactive Effluents Release Program 12 Tables 13 Figures 21 Charts 26 Appendix A - Interlaboratory Comparison Program Results A-1 Appendix B - Summary Tables B-1 Appendix C - 2008 Individual Sample Results C-1 Air Particulate and Charcoal Filters C-1 Quarterly Air Particulate - Gamma C-14 Surface Water C-23 Ground Water C-32 Drinking Water C-48 Quarterly Drinking Water - Tritium C-56 Shoreline Sediment C-58 Fish C-61 Food/Garden C-66 Feed and Forage C-72 Bottom Sediment C-74 Aquatic Vegetation C-83 Terrestrial Vegetation C-86 Soil C-88 Deer C-90 Appendix D - 2008 Land Use Census Report D-1

LIST OF TABLES 1 Radiological Environmental Monitoring Program Description 13 2 Sample Location Identifiers, Distances (Miles) and Directions (Sectors) 18 3 OSL Dosimeter Results 20 LIST OF FIGURES 1 Airborne Pathway Sampling Locations 21 2 Direct Radiation Pathway Sampling Locations 22 3 Waterborne Pathway Sampling Locations 23 4 Ingestion Pathway Sampling Locations 24 5 Distant Sampling Locations 25 LIST OF CHARTS 1 Airborne Gross Beta Weekly Results 26 2 Historical Airborne Smoothed Indicator and Control Gross Beta 27 3 OSL Dosimeters - Indicator and Control Locations 90-Day Averages 28 4 TLD Nearsite Locations and Control Locations 29 5 Coffey County Lake Surface Water Tritium Data 30 6 Drinking Water Gross Beta (5 years) 31 7 Detected Co-60 Activity in Coffey County Lake Discharge Cove Bottom Sediment 32 8 Detected Cs-1 37 Activity in Bottom Sediment 33 ii

EXECUTIVE

SUMMARY

Plant-related activation, corrosion or fission products were not detected during 2008 in airborne particulate and radioiodine filters, ground water, drinking water, broadleaf vegetation, crops, terrestrial vegetation, aquatic vegetation, or soil samples. Activation, corrosion or fission products attributable to plant operation were detected during 2008 in surface water, shoreline sediment, 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 2008 Annual Radiological Environmental Operating Report for Wolf Creek Generating Station (WCGS) covers the period from January 1 through December 31, 2008. 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 lists sampling pathways and frequencies of sampling and 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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 1 of 33

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 analysis.

Gross beta analysis of the air particulate filters was 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 in groups of five 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 seven 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), control location at Harris (location 48) 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 locations are 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, formally 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, 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 2 of 33

C-49, F-i, G-2, J-1 and J-2) are hydrologically down gradient from the site and were used as indicator sample locations.

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

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

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 analysis was 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 three gardens. Two indicator (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 one indicator location (NR-D1) 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. Due to the wet conditions, the crops were not irrigated in 2008. 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.

Shoreline sediment was collected at SC (Stringtown Cemetery). Gamma isotopic analysis was performed on the shoreline sediment sample. The indicator sample was collected as part of a cooperative sampling effort with the Kansas Department of Health and Environment (KDHE).

The sample location is identified on Figure 3.

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 analysis was performed on the bottom sediment samples. These indicator samples were collected as part of a cooperative sampling 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 3 of 33

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 DC ALT, EEA and MUDS. Gamma isotopic analysis was 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.

Terrestrial vegetation was sampled from indicator locations EEA and MUDS. Gamma isotopic analysis was 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 analysis was 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.

A road-killed deer was sampled from indicator location A1.6. Gamma isotopic analysis and tritium analysis was performed. This sample was collected as part of a cooperative sampling effort with the KDHE. The sample location is identified on Figure 4.

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

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

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

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

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

Chart 1 reflects that during the 04/30/08 - 05/08/08 sample period, the air particulate filter at location 18 was shredded which resulted in a lower than normal gross beta result (Condition Report 2008-002214).

Chart 1 also reflects higher than normal gross beta results for control location 48 during the 06/25/2008 - 07/02/2008 sample period (Condition Report 2008-003143) and control location 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 4 of 33

53 during the 12/26/2008 - 12/31/2008 sample period (Condition Report 2008-006136). Both were attributed to low sample volumes due to equipment malfunction.

The gross beta results of 2008 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 2008 weekly gross beta analyses range for indicator locations was 0.005 to 0.061 pCi/m 3, which was lower than the 1983 and 1984 pre-operational range. Additionally, the annual mean for indicator locations for 2008 (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 2008 00.031 pCi/m 3) was slightly lower than the annual mean of the control locations (0.033 pCi/mT). The indicator location with the highest gross beta annual mean was location 37 (0.032 pCi/m 3), which was also slightly lower than the annual mean of the control locations (0.033 pCi/m 3).

Naturally occurring Be-7 activity was detected, as was the case during pre-operational monitoring. In, 1984, the range for Be-7. detected activity was 0.024 to 0.211 pCi/m 3 for indicator locations, and the annual mean for indicator locations was 0.069 pCi/m 3. In 2008, the range for Be-7 detected activity was 0.062 to 0.150 pCi/m 3 for indicator locations, and the annual mean for indicator locations was 0.091 pCi/m 3.

The control locations annual mean for Be-7 detected activity (0.087 pCi/m 3) was similar to the indicator locations annual mean (0.091 pCi/m 3).

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

No effects of plant operation were seen via the airborne pathway for the year, 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 2008 was 0.115 mR/day and the annual mean for the control locations was 0.124 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 (0.174 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 2008.

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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 5 of 33

C. Waterborne Pathway (1) Surface Water Tritium, attributable to WCGS operation, was detected in all surface water samples collected from Coffey County Lake during 2008. 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 lake may have reached equilibrium.

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

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

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

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

(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 (3.4 pCi/L) was similar when compared to the annual mean of the control location gross beta activity (3.3 pCi/L). The 2008 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.

Activity due to plant operation was not evident indrinking water samples during 2008 and no unusual trends were noted.

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

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page6 of 33

Co-60 activity (60.9 pCi/kg, dry) was detected in one shoreline sediment sampled obtained from the DC indicator location. 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 2008.

Cs-137 activity was also detected in one shoreline sediment sample obtained from the DC indicator location (160.9 +/- 57.2 pCi/kg, dry) and in one sample obtained from the JRR control location (131.1 +/- 41.6 pCi/kg, dry). The detected Cs-137 activity at the DC indicator location was likely due to fallout since the measured differences between the DC and JRR values are insignificant.

ODCM required lower limits of detection were met. No unusual trends were noted.

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

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

During 2008, fish were also analyzed for tritium. All fish samples taken from Coffey County Lake had tritium activity detected (7,828.5 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 2008 (11,140 pCi/kg), would receive a committed effective dose equivalent of 0.015 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. Activity attributable to plant operation was not detected.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 7 of 33

(4) Crop Samples Gamma analysis detected naturally occurring K-40 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. The ODCM required lower limits of detection were met and no unusual trends were noted.

E. Additional Samples Collected (not required by ODCM)

(1) Shoreline Sediment Naturally occurring K-40 was detected in the shoreline sediment sample obtained from the indicator location (SC) and in samples obtained from the control location (JRR). K-40 was also detected during pre-operational shoreline sediment monitoring.

Cs-137 activity was also detected in one shoreline sediment sample obtained from the SC indicator location (98.7 +/- 30.6 pCi/kg, dry) and in one sample obtained from the JRR control location (131.1 +/- 41.6 pCi/kg, dry). The detected Cs-1 37 activity at the SC indicator location was likely due to fallout since the measured concentration was lower than the JRR control location.

No unusual trends were noted.

(2) 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 (127.4 and 95.6 pCi/kg) was detected in two of the indicator samples 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 2008. 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.

Cs-137 activity (range of 70.2 to 216.5 pCi/kg) was detected in six of the seven 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 2008 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 42 to 511 pCi/kg.)

Cs-137 activity has been identified in plant effluents. Cs-137 activity (120.7 pCi/kg) was also detected in the control location (JRR) bottom sediment samples.

Cs-137 activity (59.6 and 63.1 pCi/kg) was also detected in two indicator location samples obtained from the Environmental Education Area (EEA). Since the detected Cs-137 activity 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 8 of 33

was lower than the detected Cs-137 activity measured at the JRR control location, 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 2008. Be-7 and K-40 activity were also detected during pre-operational monitoring.

Cs-137 activity (34.8 +/- 19.5 pCi/kg) was detected in a Water Plantain sample obtained from the EEA indicator sample location. This Cs-137 activity was likely due to fallout and not attributed to plant operation since Cs-137 activity is routinely detected in JRR control location bottom and shoreline sediment samples.

No other radionuclides were detected 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 2008. No other radionuclides were detected. No unusual trends were identified.

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

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

Cs-1 37 activity (126.2 and 249.5 pCi/kg) was also detected in both of the indicator location soil samples. 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-1 37 activity detected in soil is approximately 149 to 1,265 pCi/kg. The range of the 2008 detected Cs-137 activity in soil is lower than the decay corrected pre-operational range.

No unusual trends were identified.

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

This deer sample was also analyzed for tritium. The detected tritium activity (243 pCi/kg, wet) was attributable to plant operation.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 9 of 33

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

Ill. PROGRAM REVISIONS/CHANGES In 2008, WCGS changed from Panasonic UD-814 thermoluminescent dosimeters (TLDs) to optically stimulated luminescence (OSL) dosimeters to measure direct radiation. Change was made after a field test comparison was performed. The evaluation for this change was documented in Quick Hit 1060.

Due to a change in the manufacturing process, the brand/type of air particulate filters was changed during 2008 (Condition Report 2008-002214). On May 1 5 th, 2008, WCGS started using FP47M glass fiber filters.

During December of 2008, the air sample control location was changed from #48 to the new location #53. Change was made after a field test comparison was performed. Change was made to improve air sample control location reliability.

Broadleaf vegetation sample control location D-1 was removed from the REMP since the property has changed hands and the new occupants do not maintain a garden.

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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 10 of.33

Location Sample Period Percent Explanation of Deviation/

Discrepancy/ Condition Report Number/

Hours Comments Unavailable 48 02/13/08 - 02/20/08 88%/~150 Equipment Malfunction/

Condition Report 2008-000574 Due to small sample volume, the LLD for 1-131 was not obtained.

2 02/13/08 - 02/20/08 83%-140 Equipment Malfunction/

Condition Report 2008-000575 48 04/16/08 - 04/23/08 82%/-138 Equipment Malfunction/

Condition Report 2008-002128 48 06/25/08 - 07/02/08 74%/-123 Equipment Malfunction/

Condition Report 2008-003143 48 07/16/08 - 07/23/08 7%/-13 Equipment Malfunction/

Condition Report 2008-003143 48 08/13/08 - 08/20/08 99%/-163 Equipment Malfunction/

Condition Report 2008-004149 53 12/26/08 - 12/31/08 79%/-94 Power Outage then Equipment Malfunction Condition Report 2008-006136 Drinking Water Samples Drinking water was not collected at Iola during the 02-07-08 to 03-05-08 sample period due to

,equipment malfunction. A grab sample was obtained on 03-05-2008. Condition Report 2008-000747 was generated to document the condition.

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 2008, 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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 11 of 33

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 0.191 mRem for 2008.

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. (13,137 pCi/L), would receive a committed effective dose equivalent of 0.600 mRem per year. For an adult eating 21 kg of fish per year from Coffey County Lake, using the average tritium activity (7,828.5 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 0.610 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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 12 of 33

TABLE I 2008 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 48 on Figure 5) 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 13 of 33

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 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 14 of 33

TABLE I (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 near a residence),

schools (Locations 23

& 52), Environmental Education Area (44),

CCL Public Fishing Area (46) and in two areas to serve as control stations 10-20 miles distant from the site (Locations 39 and 48 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).

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 15 of 33

TABLE I (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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 16 of 33

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 location C-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).

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 17 of 33

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

. ,. I 18 3.0 SSE H 32 3.1 WNW P 37 2.0 NNW R 48 14.7 ENE D 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 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 18 of 33

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 IO-DW 26.1 SSE H Shoreline Sediment DC 0.8 WNW P JRR 3.6 W N SC 0.8 NNW R Fish CCL 0.6 WNW P JRR 3.7 W N Food/Garden C-2 1.9 NE C D-2 14.8 ENE D 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 DC ALT 1.5 NW Q 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 A1.6 1.6 N A 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 19 of 33

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

Location Qtr. I 90-Day Qtr. 2 90-Day Qtr. 3 90-Day Qtr. 4 90-Day Total Annual Avg. Avg. Avg. Avg. Exposure (mR) 1 12.4 12.8 10.9 11.6 47.6 2 6.5 8.7 9.4 12.5 37.1 4 9.5 10.0 7.6 10.4 37.4 5 7.1 8.1 7.1 9.3 31.6 7 9.5 10.2 9.2 10.0 38.8 8 10.6 12.6 11.0 13.2 47.5 9 9.5 10.7 9.6 11.0 40.8 11 10.6 8.2 10.1 11.0 40.0 12 12.4 11.6 11.1 10.4 45.5 13 13.0 11.1 13.8 11.0 48.9 14 14.2 11.6 8.8 12.0 46.7 15 11.2 12.1 10.2 11.5 45.0 16 11.2 9.2 10.2 13.6 44.3 17 11.8 9.7 10.1 10.0 41.6 18 11.2 10.2 9.4 7.6 38.4 19 9.6 10.9 10.7 14.3 45.5 20 12.0 12.3 11.2 13.7 49.2 22 12.6 10.4 14.0 14.8 51.8 23 9.0 10.9 10.3 12.1 42.3 24 10.8 6.7 9.8 12.1 39.3 25 5.9 6.6 6.2 7.2 26.0 26 8.9 9.0 8.5 11.0 37.4 27 12.6 10.0 8.4 12.1 43.1 29 4.8 7.6 5.2 14.3 31.9 30 10.1 10.0 8.5 12.6 41.1 32 8.9 9.7 7.1 11.8 37.5 34 10.7 13.1 7.0 12.7 43.4 35 12.4 10.6 8.8 14.3 46.2 36 10.0 12.6 10.7 11.0 44.3 37 9.5 7.3 8.0 8.8 33.5 38 12.4 12.1 12.5 18.1 55.0 39 8.9 7.8 12.5 10.9 40.1 41 8.3 11.4 5.8 12.1 37.5 42 0.9 6.2 3.4 3.4 13.9 43 7.7 5.2 3.4 5.6 21.9 44 10.6 9.2 11.2 8.8 39.8 46 9.0 10.4 10.8 11.0 41.2 47 11.2 22.3 18.3 10.9 62.8 48 11.1 13.2 8.4 9.8 42.5 49 11.7 11.8 10.7 15.0 49.2 50 13.6 12.1 10.2 16.9 52.8 51 9.0 10.9 7.5 7.2 34.7 52 10.2 11.4 7.5 13.2 42.3 53 17.7 17.7 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 20 of 33

FIGURE 1 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 21 of 33

FIGURE 2 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 22 of 33

FIGURE 3 WATERBORNE PATHWAY SAMPLING LOCATIONS 0 = DRINKING WATER A = SURFACE WATER 0 = GROUND WATER * = SHORELINE SEDIMENT

• = BOTTOM SEDIMENT f = AQUATIC VEGETATION 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 23 of 33

FIGURE 4 INGESTION PATHWAY SAMPLING LOCATIONS A = FISH (JRR) *= BROADLEAF VEGETATION *= SOIL t-- FISH (CCL) TERRESTRIAL VEGETATION P = DEER 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 24 of 33

FIGURE 5 A

• = ADMBRNE PARTaiLJATE &RAD1OIODINE 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 25 of 33

CHART 1 2008 Airborne Gross Beta Weekly Results 0.080 0.070 0.060 0.050 C.£ 3.) 0.040 CD 0.030 CV Cl) 0.020 0.010 0.000 1 5 9 13 17 21 25 29 33 37 41 45 49 53 Week Number m Location 2

• Location 18 + Location 32 A Location 37

-- Location 48 (Control) a Location 49 --*- Location 53 (Control) 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 26 of 33

CHART 2 Historical Airborne Smoothed (Avg of 20) Indicator and Control Gross Beta 0.060 E

CL)

C-)

0.050-I Cn 0.040-0)

CD 0 0.030-

_0 a) 0.020 -

~0 0)

E (n) 0.010 NO 0ýz 0 bP0t

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

-- Smoothed Avg. Control Location (48) 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 27 of 33

CHART 3 OSL Dosimeters - Indicator and Control Locations 90-Day Averages 14.00 13.00-12.00-11.00-10.00-E 9.00-8.00-7.00-6.00-5.00-4.00 2008/1 2008/2 2008/3 2008/4 Year/Quarter

• Indicator Locations 90-Day Average (mR) --- Control Locations 90-Day Average (mR) 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 28 of 33

CHART 4 TLD Nearsite Locations and Control Locations 32.0 30.0--

Elevated results due to unusually 28.0 longer exposure duration.

26.0 24.0 E22.0 S* 0

.00.

20.0-- A 14AX 18.0A-- *, AI A IAL 16.0 -- *'

12.01 -

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) 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 29 of 33

CHART 5 Coffey County Lake Surface Water Tritium Data 16000 14000 12000 10000 ojCL 8000 0

03.

6000 4000 2000 0 -

1987 1992 1997 2002 2007 S-- Yearly Average of Spillway Location - Polynomial Trendline I 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 30 of 33

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

7 6

0 a, 5

,m

(.-

4

(.

0 3

2 1

0 P'A", *,Xýb\ A\T Ib'AP

' ' ' ' z" z" " Z5 Or Q" *p" 'Z)" (3, O"p

• • • • z" z" ("z

- BW15 (Control) - - - NFDW (Indicator) - -IODW (Indicator) 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 31 of 33

CHART 7 Detected Co-60 Activity in Coffey County Lake Discharge Cove Bottom Sediment 2500 2000 1500 CL 1000 500 0

N- 00 0) 0 - 04 CO It L) (1 N-_ 00 0) 0 - N\ 0C It " LO) D r- CO 00 00 00 0) 0) 0) 0) 0) 0) 0) 0) 0) 0) 0 0 0 0 0 0 0 0 0 0Y) 0) 03) 0) 0) 0) 0) 0) 0) 0) 0) 0) 0) 0 0 0 0 0 0 0 0 0 CON O C O C O C C O C 04O C 04C COj COj COI CO CO CO N N N N N NI N' N 04 N N N 04 N S 0 CD (0 (0 1o (0 10 (0 10 10 10 1 1D 0 10* (10 10 (0 10 10 (0 o O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 I - Co Polynomial Trendline I 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 32 of 33

CHART 8 Detected Cs-137 Activity in Bottom Sediment 1000 900 800 700 600 500 0

400 300 200 100 0 CO N, O N CO (O COM- CO- w CO 00)0*

,- N CN M LO IN- M O)0O)0)0)0)0)0)0)00000000000 M)0 N N CO 4- LO. ( ON,-O N-O OO CO

,-(0 ,-£ N CO

• CD *0(0D_* * £ £ '

_mC.N* .. 0 )-

o

'- NT N

N o

N N-000)

. -.N- 0N* N 0 ND0 0 0 0 0 0N 0N 0 - 0 0 O-0 7- 0'--0 '-- 0 0 0 0

• DC Cs-137 m JRR Cs-137 - Polynomial Trendline (DC) Polynomial Trendline (JRR) 2008 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 33 of 33

- Environmental, Inc.

Midwest Laboratory alnAregheny Technologies Co.

700 Landwehr Road . Northbrook, IL 60062-2310 ph. ý847) 564-0700 - (ax (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, 2008 through December, 2008

Appendix A tnterlaboratory Comparison Program 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.

The results in Table A-2 list 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 a 0.1 g/Iiter or kg 5% of known value Gross alpha < 20 pCi/liter 5.0 pCi/liter

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

> 100 pCi/liter 5% of known value Tritium  :; 4,000 pCi/liter 1lo =

169.85 x (known)°0 933

> 4,000 pCi/liter 10% of known value Radium-226,-228 a 0.1 pCi/liter 15% of known value Plutonium > 0.1 pCi/liter, gram, or sample 10% of known value Iodine-131, 5 55 pCi/liter 6 pCi/liter Iodine-129b > 55 pCi/liter 10% of known value Uranium-238, S 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 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 Result" Resultf Limits Acceptance STW-1148 03/24/08 Sr-89 50.6 +/- 2.4 60.4 48.6 - 68.2 Pass STW-1 148 03/24/08 Sr-90 42.4 +/- 1.4 39.2 28.8 - 45.1 Pass STW-1 149 03124/08 Ba- 133 56.9 +/- 5.4 58.3 48.3 -64.3 Pass STW-1 149 03/24/08 Co-60 73.9 +/- 1.6 76.6 68.9 - 86.7 Pass STW-1 149 03/24/08 Cs-134 50.2 +/- 1.9 46.6 37.4 - 51.3 Pass STW-1 149 03/24/08 Cs-137 97.7 +/- 2.2 102.0 91.8 - 115.0 Pass STW-1 149 03/24/08 Zn-65 109.9 +/- 5.8 106.0 95.4 - 126.0 Pass STW-1 150 03/24/08 Gr. Alpha 4337 +/- 7.5 50.8 26.5 - 63.7 Pass STW-1 150 03124108 Gr. Beta 36.4 +/- 1.8 51.4 35.0 - 58.4 Pass STW-1151 03/24/08 1-131 29.3 +/- 1.4 28.7 23.9 - 33.6 Pass STW-1 152 03/24/08 Ra-226 15.0 +/- 1.1 15.3 11.4-17.6 Pass STW-1 152 03/24/08 Ra-228 18.4 + 1.8 17.0 11.4 -20.4 Pass STW-1152 03/24/08 Uranium 23.4 +/- 1.3 24.6 19.8 -27.6 Pass STW-1 153 03/24/08 H-3 12551.0 +/- 207.0 12000.0 10400.0 - 13200.0 Pass STW-1 154 07107108 Sr-89 24.9 +/- 3.5 28.7 20.4-35.3 Pass STW-1 154 07/07/08 Sr-90 39.7 +/- 0.5 40.0 29.4 - 46.0 Pass STW-1 155 07/07/08 Ba-133 45.0 +/- 1.2 46.6 38.1 -51.8 Pass STW-1155 07/07/08 Co-60 24.9 +/- 3.0 25.7 22.3 -31.0 Pass STW-1155 07/07/08 Cs-134 90.4 +/- 5.3 93.2 76.6 - 102.0 Pass STW-1155 07/07/08 Cs-137 57.1 +/- 2.8 54.6 49.1 -62.9 Pass STW-1155 07/07/08 Zn-65 102.9 +/- 7.3 98.8 88.9 -118.0 Pass STW-1156 07/07/08 Gr. Alpha 24.8 +/- 1.6 30.7 15.7 -40.0 Pass STW-1156 07/07/08 Gr. Beta 23.9 +/- 0.9 25.8 16.1 -33.7 Pass STW-1157 07/07/08 Ra-226 8.0 +/- 0.6 8.1 6.1 -9.5 Pass STW-1 157 07/07/08 Ra-228 7.7 +/- 0.8 7.4 4.7 - 9.5 Pass STW-1 157 07/07/08 Uranium 11.2 +/-0.3 11.3 8.9 -13,0 Pass STW-1164 10/06/08 Sr-89 42.2 +/- 3.2 48.7 38.2 -56.1 Pass STW-1 164 10/06/08 Sr-90 35.4 +/- 1.2 33.6 24,6 - 38.8 Pass STW-1165 10/06/08 Ba-133 56.9 +/- 1.0 63.5 52.8 - 69.9 Pass STW-1 165 10/06/08 Co-60 47.6 +/- 1.3 49.1 44.2 - 56.6 Pass STW-1 165 10/06/08 Cs-134 26.4 +/- 4.0 25.6 19.7 - 28.4 Pass STW- 1165 10106/08 Cs-137 24.3 t 0.7 25.6 21.6 -31.2 Pass STW-1165 10/06/08 Zn-65 72.0 +/- 2.9 68.6 61.2 - 83.0 Pass STW-1 166 10/06/08 Gr. Alpha 24.2 +/- 4.8 26.9 13.6 -35.5 Pass STW-1 166 10106108 Gr. Beta 32.6 +/-1,0 38,0 25.1 -45.5 Pass STW-1 167 10/06/08 1-131 29.0 +/- 0.3 28.1 23.4 - 33.0 Pass STW-1 168 10/06/08 Ra-226 15.0 +/- 1.0 16.1 12.0 -18.4 Pass STW-1 168 10/06/08 Ra-228 16.0 +/- 1.0 14.1 9.4 - 17.1 Pass STW-1168 10/06/08 Uranium 47.8 +/- 2.0 50.3 40.8 - 55.9 Pass STW-1169 10/06/08 H-3 2357.0 +/- 66.0 2220.0 1830.0 - 2460.0 Pass Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

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

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

Al-1

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

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

2008-1 6/16/2008 40 cm. 30.23 33.87 +/- 1.17 21.16 - 39.30 Pass 2008-1 6/16/2008 50 cm. 19.35 23.13 +/- 0.57 13.55 - 25.16 Pass 2008-1 6/16/2008 60 cm. 13.44 16.25 +/- 1.10 9.41 - 17.47 Pass 2008-1 6/16/2008 70 cm. 9.87 10.39 +/- 0.52 6.91 - 12.83 Pass 2008-1 6116/2008 80 cm. 7.56 7.44 + 0.51 5.29 - 9.83 Pass 2008-1 6/16/2008 90 cm. 5.97 5.80 + 1.04 4.18 -7.76 Pass 2008-1 6/16/2008 100 cm. 4.84 4.32 +/-0.43 3.39 - 6.29 Pass 2008-1 6/16/2008 120 cm. 3.36 2.69 +/- 0.15 2.35 - 4.37 Pass 2008-1 6116/2008 150 cm. 2.15 2.05 +/- 0.69 1.51 -2.80 Pass 2008-1 6/16/2008 180 cm. 1.49 1.23 + 0.80 1.04 - 1.94 Pass Environmental, Inc.

2008-2 11/17/2008 30 cm. 63.05 73.10 +/- 1.84 44.14 - 81.97 Pass 2008-2 11/17/2008 40 cm. 35.46 40.80 +/-2.30 24.82 - 46.10 Pass 2008-2 11/17/2008 50 cm. 22.7 24.10 + 0.58 15.89 - 29.51 Pass 2008-2 11/17/2008 60 cm. 15,76 15.98 +/- 0.55 11.03 - 20.49 Pass 2008-2 11/17/2008 60 cm. 15.76 19.49 +/- 0.93 11.03 -20.49 Pass 2008-2 11/17/2008 70 cm. 11.58 11,97 +/- 0.54 8.11 -15.05 Pass 2008-2 11/17/2008 75 cm. 10.09 9.45 +/- 0.28 7.06 - 13.12 Pass 2008-2 11/17/2008 80 cm. 8.87 9.30 +/- 0.18 6.21 - 11.53 Pass 2008-2 11/17/2008 90 cm. 7.01 7.19 +/- 0,43 4.91 -9.11 Pass 2008-2 11/17/2008 90 cm. 7.01 6.84 +/- 0.42 4.91 -9.11 Pass 2008-2 11/17/2008 100 cm. 5.67 5.47 +/- 0.19 3.97 - 7.37 Pass 2008-2 11/17/2008 110 cm. 4.69 3.98 +/- 0.27 3.28 -6.10 Pass 2008-2 11/17/2008 120 cm. 3.94 3.09 +/- 0.21 2.76 - 5.12 Pass 2008-2 11/17/2008 120 cm. 3.94 3.12 +/- 0.34 2,76 - 5.12 Pass 2008-2 11/17/2008 150 cm. 2.52 2.55 +/- 0.12 1.76 -3.28 Pass 2008-2 11/17/2008 150 cm. 2.52 2.24 +/- 0.08 1,76 - 3.28 Pass 2008-2 11/17/2008 180 cm. 1.75 1.36 +/- 0.08 1.23 - 2.28 Pass A2-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 C Activity Limits d Acceptance SPW-111 1/14/2008 Tc-99 32.20

• 0.85 32.34 20.34 - 44.34 Pass SPW-298 113112008 Ni-63 213.55 +/- 3.07 212.58 148.81 - 276.35 Pass W-11708 1/1712008 Ra-226 11.34 +/- 0.43 12.69 8.88 - 16.50 Pass SPW-711 2/25/2008 U-238 33.56 t 1.74 41.70 29.19 - 54.21 Pass SPAP-881 3/1112008 Cs- 134 19.29 +/- 1.53 20.09 10.09 - 30.09 Pass SPAP-881 3/1112008 Cs-137 114.04 +/- 3.03 113.90 102.51 - 125.29 Pass SPAP-883 3111/2008 Gr. Betae 54.56 +/- 0.12 51.64 30.98 - 72,30 Pass SPMI-885 3/11/2008 Sr-90 45.93 +/- 1.60 45.13 36.10 - 54.16 Pass SPW-887 3/11/2008 Sr-90 38.82 +/- 1.60 45.13 36.10 - 54.16 Pass SPW-889 3/11/2008 H-3 67325.00 +/- 725.00 67384.00 53907.20 - 80860.80 Pass W-31808 3/18/2008 Gr. Alpha 19.51 +/- 0.40 20.08 10.04 - 30.12 Pass W-31 808 3/18/2008 Gr. Beta 47.20 +/- 0.42 45.67 35.67 - 55.67 Pass SPMI-885 3/24/2008 Cs-134 40.93 +/- 1.55 39.69 29.69 - 49,69 Pass SPMI-885 3/24/2008 Cs-137 61.36 +/- 2.82 56.91 46.91 - 66,91 Pass SPW-887 3/24/2008 Cs-134 40,68 +/- 1.44 39.69 29.69 - 49,69 Pass SPW-887 3/24/2008 Cs-1 37 58.52 +/- 2.93 56.91 46.91 - 66.91 Pass SPW-1282 4/2/2008 U-238 41.30 +/- 1.78 41.70 29.19 - 54.21 Pass W-40308 4/3/2008 Ra-226 15.17 +/-0.50 12.69 8.88 - 16.50 Pass SPW-5580 4/7/2008 H-3 211.02 +/- 7.71 240.00 0.00 - 806.46 Pass SPW-1562 4/8/2008 Ra-228 28.93 +/- 2.09 30.51 21.36 - 39,66 Pass SPW-1560 4/10/2008 Tc-99 29.74 +/- 0.84 32.34 20.34 - 44.34 Pass SPW-1621 4/16/2008 Fe-55 27205.80 + 982.90 28370.00 22696.00 - 34044.00 Pass W-51508 5/15/2008 Gr. Alpha 24.01 +/- 0.41 20.08 10.04 - 30.12 Pass W-51508 5/15/2008 Gr. Beta 47.97 +/- 0.41 45.68 35.68 - 55.68 Pass SPAP-2673 6/2/2008 Cs- 134 17.39 +/- 1.32 18.60 8.60 -28.60 Pass SPAP-2673 6/2/2008 Cs-1 37 106.82 +/- 3.42 113.30 101.97 - 124.63 Pass SPAP-2674 612/2008 Gr. Beta e 53.57 +/- 0.13 51.40 30.84 - 71.96 Pass SPF-2745 6/2/2008 Cs-1 34 0.34 +/- 0.02 0.37 0.22 - 0.52 Pass SPF-2745 6/212008 Cs-137 2.06 +/- 0.04 2,27 1.36-3.18 Pass SPMI-2677 6/3/2008 Cs-137 53.99 +/- 6.15 56.66 46.66 - 66.66 Pass SPMI-2677A 6/3/2008 1-131 26.64 +/- 0.59 28.58 16.58 - 40.58 Pass SPW-2677 6/3/2008 Cs-134 40.30 +/- 3.35 37.21 27.21 - 47.21 Pass SPW-2677 6/3/2008 1-131(G) 25.92 +/- 4.48 28.58 18.58 - 38.58 Pass SPMI-2679 6/3/2008 Cs-134 35.02 +/- 2.93 37.21 27,21 - 47.21 Pass SPMI-2679 6/3/2008 Cs-137 58.49 +/- 6.05 56.66 46.66 - 66.66 Pass SPMI-2679 613/2008 1-131(G) 25.30 +/- 4.97 28.58 18.58 - 38.58 Pass SPMI-2679A 6/3/2008 1-131 30.37 +/- 0.50 28.58 16.58 - 40.58 Pass SPVE-2681 6/3/2008 1-131(G) 1.11 +/- 0.06 0.95 0.57 - 1.33 Pass SPW-2683 6/2/2008 Ni-63 2151.70 +/- 10.22 2119.30 1483.51 - 2755.09 Pass SPW-2685 6/2/2008 H-3 64927.20 +/- 704.80 66540.80 53232.64 - 79848.96 Pass SPW-2689 6/2/2008 C-14 4405.40 t 15.21 4742.00 2845.20 - 6638.80 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 W-81408 8/14/2008 Ra-226 12.98 +/- 0.35 12.69 8.88 - 16.50 Pass SPW-1562 8/14/2008 Ra-228 29.09 +/- 2.46 30.51 21.36 - 39.66 Pass SPW-81808 8/18/2008 U-238 42.59 +/- 1.96 41.70 29.19 - 54.21 Pass W-81808 8/18/2008 Gr.Alpha 21.36 +/- 0.42 20.08 10.04 - 30.12 Pass W-81808 8/18/2008 Gr. Beta 49.33 +/- 1.01 45.68 35.68 - 55.68 Pass W-1 12008 11/20/2008 Gr. Alpha 20.13 +/- 0.40 20.08 10.04 - 30.12 Pass W-112008 11/20/2008 Gr. Beta 48.28 +/- 0.42 45.60 35.60 - 55.60 Pass SPAP-6839 12/5/2008 Cs-134 15.39 +/- 2.72 15.68 5.68 - 25.68 Pass SPAP-6839 12/5/2008 Cs-137 111.45 +/- 9.85 112.00 100.80 - 123.20 Pass SPAP-6841 12/5/2008 Gr. Beta e 49.26 +/- 0.12 50.72 30.43 - 71.01 Pass SPW-6843 12/5/2008 C-14 19377.50 +/- 55.27 23708.00 14224.80 - 33191.20 Pass SPW-6845 12/5/2008 Fe-55 7068.30 +/- 692.30 6028.00 4822.40 - 7233.60 Pass SPW-6847 12/5/2008 Tc-99 37.71 +/- 1.33 32.34 20.34 - 44.34 Pass SPW-6849 12/5/2008 Ni-63 232.56 +/- 3.26 211.34 147.94 - 274.74 Pass SPW-6851 12/5/2008 H-3 63664.00 +/- 8745.00 64674.00 51739.20 - 77608,80 Pass SPF-6859 12/5/2008 Cs-134 0.63 +/- 0.02 0.63 0.38 - 0.88 Pass SPF-6859 12/5/2008 Cs-137 2.35 +/- 0.01 2.24 1.34 -3.14 Pass SPW-7059 12J19/2008 Sr-90 49.19 +/- 2.62 44.33 35.46 - 53.20 Pass SPMI-7061 12/19/2008 Sr-90 39.39 +/- 2.19 44.33 35.46 - 53.20 Pass 8 Liquid sample results are reported in pCI/Liter. air filters( pCi/filter), charcoal (pCi/m 3), and solid samples (pCi/g).

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

CH (charcoal canister), F (fish).

c Results are based on single determinations.

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

0 Control 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 (pCiIL)a Lab Code Sample Date Analysisb Laboratory results (4,66a) Acceptance Type LLD Activityc Criteria (4.66 a)

SPW-17 Water 1/3/2008 U-238 0.09 0.01 +/- 0.07 1 SPW-1 12 Water 1/14/2008 Tc-99 4.70 -0.06 +/- 2.85 10 W-1 1408 Water 1114/2008 Ra-226 0.05 0.05 +/- 0.04 1 SPAP-880 Air Filter 3/11/2008 Cs-134 0.91 100 SPAP-880 Air Filter 3/11/2008 Cs-137 1.13 100 SPW-888 Water 3/11/2008 H-3 159.99 -78.90'+/- 80.40 200 W-31808 Water 3/18/2008 Gr. Alpha 0.42 -0.05 +/- 0.29 1 W-31808 Water 3/18/2008 Gr. Beta 0.72 0.09 +/- 0.51 3.2 SPMI-884 Milk 3/24/2008 Cs-134 2.79 10 SPMI-884 Milk 3/24/2008 Cs-1 37 3.36 10 W-40308 Water 4/3/2008 Ra-226 0,04 0.05 +/- 0.03 1 SPW-1 563 Water 4/8/2008 Ra-228 0.57 0.31 +/- 0.30 2 SPW-1561 Water 4/10/2008 Tc-99 4.77 -3.42 +/- 2.85 10 SPW-1621 Water 4/16/2008 Fe-55 668.50 -170,70 +/- 397.20 1000 SPW-2451 Water 5/22/2008 U-238 0.21 0.35 +/- 0.24 I SPW-2676 Water 6/2/2008 Cs-134 2.03 10 SPW-2676 Water 6/212008 Cs-134 3.60 10 SPW-2676 Water 6/2/2008 Cs-137 2.38 10 SPW-2677 Water 6/2/2008 Cs-134 2.78 10 SPW-2677 Water 6/2/2008 1-131(G) 3.49 20 SPW-2677 Water 6/2/2008 1-131(G) 5.25 20 SPF-2744 Fish 6/2/2008 Cs-I34 5.48 100 SPF-2744 Fish 612/2008 Cs-!37 4.83 100 SPW-2676 Water 6/3/2008 1-131 0.18 0.01 +/- 0.11 0.5 SPMI-2678 Milk 6/3/2008 1-131 0.22 0.12 +/- 0.15 0.5 SPVE-2680 Vegetation 6/312008 1-131(G) 0.01 20 SPW-3581 Water 7/14/2008 U-238 0.10 0.13 +/- 0,12 1 W-80708 Water 8/7/2008 Gr. Alpha 0.63 -0.02 +/- 0.44 1 W-80708 Water 8/712008 Gr. Beta 1.43 -0,47 +/- 0.99 3.2 W-81408 Water 8/14/2008 Ra-226 0.06 0.14 +/- 0.04 1 SPW-1563 Water 8/14/2008 Ra-228 0.79 0.89 +/- 0.47 2 SPW-81808 Water 8/18/2008 U-238 0.18 0.04 +/- 0.13 1 A4-1

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

W-1 12008 Water 11/2012008 Gr. Alpha 0.40 0.02 +/- 0.28 1 W-1 12008 Water 11/20/2008 Gr. Beta 0.75 -0.16 +/- 0.52 3.2 SPAP-6838 Air Filter 12/5/2008 Cs-134 1.01 100 SPAP-6838 Air Filter 12/5/2008 Cs-137 0.95 100 SPAP-6840 Air Filter 12/5/2008 Gr. Beta 0.96 2.69 +/- 0.64 3.2 SPW-6842 Water 12/5/2008 C-14 7.79 -3.04 +/- 4.05 200 SPW-6844 Water 12/512008 Fe-55 715.10 21.70 +/- 435,10 1000 SPW-6846 Water 12/5/2008 Tc-99 1.36 -0.47 +/- 0.82 10 SPW-6848 Water 12/5/2008 Ni-63 1.94 3.08 +/- 1.23 20 SPF-6858 Fish 12/5/2008 Cs-134 1.53 100 SPF-6858 Fish 12/5/2008 Cs-137 3.92 100 SPW-7058 Water 12/19/2008 Cs-134 2.62 10 SPW-7058 Water 12/19/2008 Cs-137 2.39 10 SPW-7058 Water 12/19/2008 Sr-90 0.65 -0.28 +/- 0.26 1 SPMI-7060 Milk 12/19/2008 Cs-134 2.18 10 SPMI-7060 Milk 12/19/2008 Cs-137 3.87 10 SPMI-7060 Milk 12/19/2008 1-131(G) 2.80 20 SPMI-7060 d Milk 12/19/2008 Sr-90 0.53 0.76 +/- 0.34 1 Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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.

d Low levels of Sr-90 arestill detected in the environment. A concentration of (1-5 pCi/L) in milk Is not unusual, A4-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCiIL)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance AP-8809, 8810 1/2/2008 Be-7 0.06 +/- 0.02 0.06 +/- 0.01 0.06 +/- 0.01 Pass CF-42, 43 112/2008 Gr. Beta 8.88 +/- 0.19 8.99 +/- 0.19 8.94 +/- 0.13 Pass CF-42, 43 1/2/2008 K-40 5.08 +/- 0.29 5.19 +/- 0.30 5.14 +/- 0.21 Pass DW-80020, 80021 1/7/2008 Gr. Alpha 2.28 +/- 0.84 1.98 +/-t 0.86 2.13 +/- 0.60 Pass U-169,170 1/10/2008 Beta-K40 7.50 +/- 5.50 11.70 +/- 5.10 9.60 +/- 3.75 Pass SO-8836, 8837 1/14/2008 Cs-137 0.80 +/- 0.05 0.75 +/- 0.05 0.77 +/- 0.03 Pass SO-8836, 8837 1/1412008 Gr. Alpha 13.30 +/- 4.31 15.58 +/- 4.10 14.44 +/- 2.98 Pass SO-8836,8837 1/14/2008 Gr. Alpha 33.68 +/- 3,73 29.21 +/- 3.10 31.45 +/- 2.43 Pass SO-8836, 8837 1/14/2008 K-40 12,31 +/- 0.74 12.96 +/-0.73 12.64 +/- 0.52 Pass DW-80045,80046 1/15/2008 Gr. Alpha 2.94 +/- 1.13 3.41 +/- 1.04 3.17 +/- 0.77 Pass DW-80045, 80046 1/15/2008 Gr. Beta 1.86 +/- 0.66 1.36 +/- 0.63 1.61 +/- 0.45 Pass MI-138,139 1/15/2008 K-40 1262.40 +/- 81.70 1396.20 +/- 154.20 1329.30 +/- 87.25 Pass LW-190,191 1/16/2008 Gr. Beta 2.85 +/- 1.07 1,64 +/- 1.02 2.24 +/- 0.74 Pass DW-8008, 8009 1/16/2008 Ra-226 2.77 +/- 0.20 3.11 +/-0.22 2.94 +/- 0.15 Pass DW-8008, 8009 1/16/2008 Ra-228 3.95 +/- 0.74 3.96 +/- 0.77 3.96 +/- 0.53 Pass DW-80057,80058 1/21/2008 Gr. Alpha 6.77 +/- 0.66 7.91 +/- 1.73 7.34 +/- 0.92 Pass DW-80057, 80058 1/21/2008 Gr. Beta 13.83 +/- 0.97 14.78 +/- 1.01 14.31 +/- 0.70 Pass SWU-479,480 1/29/2008 Gr. Beta 4.49 +/- 1,13 3.13 +/- 1.14 3.81 +/- 0.80 Pass W-920, 921 214/2008 Gr. Beta 4.20 +/- 1.30 3.30 +/- 1.30 3.75 +/- 0.92 Pass SW-540, 541 2/12/2008 Gr. Alpha 2.75 +/- 1,16 4.01 +/- 1.18 3.38 +/- 0.83 Pass SW-540, 541 2/12/2008 Gr. Beta 6.46 +/- 1,11 6.71 +/- 1.03 6.59 +/- 0.76 Pass DW-80155,80156 2/1212008 Ra-226 2,55 +/- 0.22 2.01 +/- 0.16 2.28 +/- 0.14 Fail DW-80155, 80156 2/12/2008 Ra-228 1.86 +/- 0.70 1.53 +/- 0.67 1.70 +/- 0.48 Pass DW-80165, 80166 2/20/2008 Gr. Alpha 1.51 +/- 0.90 0.80 +/- 1.05 1.16 +/- 0.69 Pass DW-80166, 80167 2/2012008 Ra-226 0.40 +/- 0.09 0.46 +/- 0.09 0.43 +/- 0.06 Pass DW-80166, 80167 2/20/2008 Ra-228 1.44 +/- 0.52 1.42 +/- 0.57 1.43 +/- 0.39 Pass DW-80166, 80167 212012008 Uranium 0.69 +/- 0.25 0.69 +/- 0.26 0.69 +/- 0.18 Pass W-1413,1414 3/3/2008 Gr. Beta 7.50 t 3.00 3.70 +/- 2.60 5.60 +/- 1.98 Pass DW-80189,80190 3/11/2008 Ra-226 4.41 +/- 0.30 4.09 +/- 0.25 4.25 +/- 0.20 Pass DW-80189, 80190 3/11/2008 Ra-228 1.99 +/- 0.65 2.17 +/-0.66 2.08 +/- 0.46 Pass M1-1006,1007 3/12/2008 K-40 1451.90 +/- 112.80 1409.50 +/- 111.40 1430.70 +/- 79.27 Pass Ml-1006,1007 3/12/2008 Sr-90 0.48 +/- 0.31 0.97 +/- 0,38 0.72 +/- 0.24 Pass DW-80205,80206 3/14/2008 Gr. Alpha 3.64 +/- 0.80 3.39 +/- 0.82 3.52 +/- 0.57 Pass DW-80202, 80203 3/14/2008 Ra-226 3.16 +/-0.21 3.00 +/- 0.19 3.08 +/- 0.14 Pass DW-80202, 80203 3/14/2008 Ra-228 2.40 +/- 1.00 2.07 +/- 0.69 2.24 +/- 0.61 Pass DW-80208, 80209 3/14/2008 U-233/4 1.32 +/- 0.25 1.29 +/- 0.36 1.31 +/- 0.22 Pass SG-1080, 1081 3/18/2008 Pb-214 3.99 +/- 0.30 4.15 +/- 0.29 4.07 +/-.0.21 Pass SO-1195, 1196 3/1812008 U-233/4 0.14 +/- 0.02 0.14 +/- 0.02 0.14 +/- 0.01 Pass SO-1195,1196 3/18/2008 U-238 0.13 +/- 0.02 0.13 +/- 0.02 0.13 +/- 0.01 Pass WW-1242, 1243 3124/2008 Gr, Beta 10.36 +/- 1.63 9.06 +/- 1.55 9.71 +/- 1.13 Pass AP-1519,1520 4/2/2008 Be-7 0.07 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0,01 Pass W-1565,1566 4/2/2008 Gr. Alpha 0.82 +/- 0.64 1.58 +/- 0.72 1.20 +/- 0.48 Pass W-1565,1566 4/2/2008 Gr. Beta 3.73 +/- 0.86 5.51 +/- 1.09 4.62 +/- 0.69 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 DW-80255,80256 418/2008 Ra-226 0.19 +/- 0.08 0,28 +/- 0.11 0.24 +/- 0.07 Pass DW-80255, 80256 4/812008 Ra-228 1.79 +/- 0.57 1.32 +/- 0.55 1.56 +/- 0.40 Pass DW-80259, 80260 418/2008 Gr. Alpha 3.39 +/- 0.82 3.62 +/- 0.82 3.51 +/- 0.58 Pass DW-80301, 80302 4/11/2008 Ra-226 0.47 +/- 0.09 0.47 +/- 0.09 0.47 +/- 0.06 Pass DW-80301, 80302 4/11/2008 Ra-228 1.02 +/- 0.42 0.82 +/- 0.45 0.92 +/- 0.31 Pass SO-1913,1914 4/15/2008 K-40 12.79 +/- 0.73 13.88 +/- 0.85 13.34 +/- 0.56 Pass DW-80313, 80314 4/16/2008 Ra-226 3.39 +/- 0.22 3.28 +/- 0.21 3.34 +/- 0.15 Pass DW-80313, 80314 4/16/2008 Ra-228 4.27 t 0.72 5.14 +/- 0.77 4.71 +/- 0.53 Pass SWU-2087,2088 4/29/2008 Gr. Beta 2.20 +/- 0.60 3.50 +/- 0.90 2.85 +/- 0.54 Pass LW-2297,2298 4130/2008 Gr. Beta 1.41 +/- 0.43 1.02 +/- 0.40 1.22 +/- 0.30 Pass LW-2321, 2322 4/30/2008 Gr. Beta 1.33 +/- 0.54 1,23 +/- 0.54 1.28 +/- 0.38 Pass BS-2063,2064 5/1/2008 Gr. Beta 13.71 +/- 2.06 17.60 +/- 2.49 15.66 +/- 1.62 Pass SG-2229, 2230 5/5/2008 Ac-228 26.25 +/- 2.70 24.90 +/- 2,55 25.58 +/- 1.86 Pass W-2792,2793 5/5/2008 Gr. Beta 7.20 +/- 2.30 7.00 +/- 2.50 7.10 +/- 1.70 Pass SG-2229, 2230 5/5/2008 Pb-214 23.28 +/- 0.30 23.54 +/- 0.33 23.41 +/- 0.22 Pass F-2850, 2851 5/7/2008 Cs-1 37 3.37 +/- 0.21 3.16 +/- 0.19 3.27 +/- 0.14 Pass DW-80376,80377 5/9/2008 Ra-226 0.94 +/- 0.13 1.07 +/- 0.13 1.01 +/- 0.09 Pass DW-80376, 80377 5/9/2008 Ra-228 2.05 +/- 0.57 1.40 +/- 0.51 1.73 +/- 0.38 Pass MI-2363, 2364 5/14/2008 K-40 1335.40 +/- 111.20 1510.70 +/- 124.30 1423.05 +/- 83.39 Pass SG-2752, 2753 5/14/2008 Be-7 264.60 +/- 83.90 222.80 +/- 93.10 243.70 +/- 62.66 Pass SG-2752, 2753 5/14/2008 Cs-137 64.80 +/- 6.00 68.90 +/- 5.80 66.85 +/- 4.17 Pass SG-2752, 2753 5/14/2008 Gr. Alpha 19.35 +/- 3.48 22,88 +/- 4,04 21.12 +/- 2.67 Pass SG-2752, 2753 5/14/2008 Gr. Beta 30.53 +/- 2.40 33.31 +/- 2.71 31.92 +/- 1.81 Pass SG-2752, 2753 5/14/2008 K-40 9121.90 + 191.80 9183.70 +/- 194.20 9152.80 +/- 136.47 Pass DW-80389,80390 5/14/2008 Ra-226 2.99 +/- 0.36 2.58 +/- 0.31 2.79 +/- 0.24 Pass DW-80389, 80390 5/14/2008 Ra-228 2.87 +/- 0.68 1.73 +/- 0.57 2.30 +/- 0.44 Pass DW-80392, 80393 5/14/2008 Gr. Alpha 19.94 +/- 130 17.89 +/- 1.26 18.92 +/- 0.91 Pass DW-80394, 80395 5/14/2008 U-233/4 2,03 +/- 0.27 2.54 +/- 0.39 2.29 +/- 0.24 Pass BS-2490,2491 5/16/2008 Cs-137 6.81 +/- 1.20 6.76 +/- 1.23 6.78 +/- 0.86 Pass WW-2462, 2463 5/19/2008 H-3 158.61 +/- 80.90 205.63 +/- 83.06 182.12 +/- 57.97 Pass W-2826,2827 5/27/2008 Gr. Alpha 3.47 +/- 2.23 4.22 +/- 2.20 3.84 +/- 1.57 Pass W-2826,2827 5/27/2008 Gr. Beta 10.67 +/-1.92 9.43 +/- 1.76 10.05 +/- 1.30 Pass SG-3378, 3379 6/2/2008 Gr. Alpha 6.51 +/-1.15 7.83 +/- 1.32 7.17 +/- 0.88 Pass SG-3378, 3379 6/2/2008 Gr. Beta 16.23 +/- 0.95 15.76 +/- 1.06 16.00 +/- 0.71 Pass SG-3393, 3394 6/4/2008 Be-7 0.82 +/- 0.23 0.66 +/- 0.33 0.74 +/- 0.20 Pass SG-3393, 3394 6/4/2008 Cs-1 37 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 Pass SG-3393, 3394 614/2008 Gr. Alpha 18.96 +/- 3.49 16.96 +/- 3.34 17.96 +/- 2.42 Pass SG-3393, 3394 6/4/2008 Gr. Beta 30.01 +/- 2.49 30.17 +/- 2.56 30.09 +/- 1.79 Pass SG-3393, 3394 6/4/2008 K-40 9.78 +/- 0.30 10.00 +/- 0.28 9.89 +/- 0.21 Pass LW-2939, 2940 6/12/2008 Gr. Beta 1.46 +/- 0.59 1.74 +/- 0.59 1.60 +/- 0.42 Pass WW-3053,3054 6/17/2008 Gr. Beta 4.28 +/- 0.83 5.27 +/- 0.91 4.77 +/- 0.61 Pass SW-3154, 3155 6/24/2008 Gr. Beta 2.15 +/- 1.01 2.79 +/- 0.97 2.47 +/- 0.70 Pass A5-2

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

Averaged Lab Code Date Analysis First Result Second Result Result Acceptance BS-3245, 3246 6/27/2008 Co-60 108,84 +/- 44.14 91.10 +/- 22.32 99.97 +/- 24.73 Pass BS-3245, 3246 6/27/2008 Cs-137 952.18 +/- 52.78 941.56 +/- 13.61 946.87 +/- 27.25 Pass XW-1080, 1081 6/30/2008 Fe-55 2,96 +/- 0.32 2.71 +/- 0.30 2.84 +/- 0.22 Pass XW-3786, 3787 6/30/2008 Fe-55 2.96 +/- 0.32 2.71 t 0.30 2.84 +/- 0.22 Pass G-3274,3275 7/11/2008 Gr. Beta 7.65 t 0.24 7.44 +/- 0.24 7.55 +/- 0.17 Pass SL-3295, 3296 7/112008 Gr. Beta 3.76 +/- 0.24 3.64 +/- 0.24 3.70 +/- 0.17 Pass AP-3531, 3532 7/1/2008 Be-7 0.10 +/-0.01 0.08 +/- 0.01 0.09 +/- 0.01 Pass AP-3663, 3664 7/2/2008 Be-7 0.08 +/- 0.01 0.08 +/- 0.02 0.08 +/- 0.01 Pass AP-3690, 3691 712/2008 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 Pass W-4333, 4334 717/2008 Gr. Beta 7.20 +/- 1.90 7.70 +/- 1.70 7.45 +/- 1.27 Pass W-4840,4841 7/7/2008 Gr. Beta 6,70 +/- 1.60 6.70 +/- 1.80 6.70 + 1.20 Pass DW-80415, 80416 7/7/2008 Ra-226 2.81 +/- 0.47 2.00 +/- 0.34 2.41 +/- 0.29 Pass SG-3964, 3965 7/9/2008 Be-7 1.35 +/- 0.23 1.51 +/-0.22 1.43 +/- 0.16 Pass SG-3964, 3965 7/9/2008 Cs-137 0.04 +/- 0.01 0.04 + 0.01 0.04 +/- 0.00 Pass SG-3964, 3965 7/9/2008 Gr. Alpha 23.17 +/- 3.39 18.76 + 3.24 20.97 +/- 2.34 Pass SG-3964, 3965 7/9/2008 Gr. Beta 28.99 +/- 2.12 29.25 +/- 2.31 29.12 +/- 1,57 Pass SG-3964, 3965 7/9/2008 K-40 6.86 +/- 0.19 6,84 + 0.17 6.85 +/- 0.13 Pass DW-80427, 80428 7/9/2008 Ra-226 3.25 +/- 0.24 3.27 +/- 0.20 3.26 +/- 0.16 Pass DW-80427, 80428 7/9/2008 Ra-228 2.65 +/- 0.67 3.25 +/- 0.72 2.95 + 0.49 Pass DW-80451, 80452 7/15/2008 Ra-226 1.02 +/- 0.10 0.96 +/-0.12 0.99 +/- 0.08 Pass DW-80451, 80452 7/15/2008 Ra-228 1.09 +/- 0.62 1.14 +/- 0.60 1,12 +/- 0.43 Pass DW-80481, 80482 7/16/2008 Ra-226 1.20 +/- 0.13 1.40 +/- 0.14 1.30 +/- 0.10 Pass DW-80481,80482 7/16/2008 Ra-228 1.69 +/- 0.68 1.65 +/- 0.77 1.67 +/- 0.51 Pass MI-3842, 3843 7/21/2008 K-40 1282.60 +/- 108,30 1379.00 +/- 111.40 1330.80 + 77.68 Pass MI-3892, 3893 7128/2008 K-40 1371.50 +/- 102,90 1501.20 +/- 111.80 1436.35 +/- 75.97 Pass DW-4067, 4068 7/29/2008 Gr. Beta 10.46 +/- 2.37 14.25 +/- 2.78 12.36 +/- 1.83 Pass SWT-4158, 4159 7/29/2008 Gr. Beta 1.58 +/- 0.45 1.80 +/- 0.47 1.69 +/- 0.33 Pass LW-4221, 4222 7/31/2008 Gr. Beta 1.35 +/- 0.56 0.91 +/- 0.52 1.13 +/- 0.38 Pass LW-4242, 4243 7/31/2008 Gr. Beta 1.36 +/- 0.56 1.18 +/- 0.53 1.27 +/- 0.38 Pass VE-4046, 4047 8/4/2008 Be-7 0.77 +/- 0.13 0.82 +/- 0.19 0.80 +/- 0.12 Pass VE-4046, 4047 814/2008 Gr. Beta 8.81 + 0.36 8.34 +/- 0.31 8.58 +/- 0.24 Pass VE-4046, 4047 8/4/2008 K-40 5.17 +/- 0.34 5.33 +/- 0.42 5.25 +/- 0.27 Pass W-4821, 4822 8/4/2008 Gr. Alpha 1.70 + 0.80 1.70 +/-0.90 1.70 +/- 0.60 Pass W-4821, 4822 8/4/2008 Gr. Beta 3.90 _ 0.80 3.70 +/- 0.90 3.80 +/- 0.60 Pass W-4801, 4802 8/5/2008 Gr. Alpha 4.40 +/- 2.40 4.80 +/- 2.30 4.60 +/- 1.66 Pass W-4801, 4802 8/5/2008 Gr. Beta 13.20 + 1.30 14.50 +/- 1.40 13.85 +/- 0.96 Pass DW-80522, 80523 8/5/2008 Ra-226 0.50 +/- 0.12 0.28 +/-0.12 0.39 +/- 0.08 Pass DW-80522, 80523 8/5/2008 Ra-228 1.23 +/- 0.60 1.09 +/- 0.57 1.16 +/- 0.41 Pass A5-3

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance DW-80531, 80532 8/5/2008 Gr. Alpha 18.90 t 1.86 17.80 +/- 1.96 18.35 +/- 1.35 Pass DW-80534, 80535 8/5/2008 Ra-226 3.01 +/- 0.18 3.33 +/- 0.18 3.17 +/- 0.13 Pass DW-80534, 80535 8/5/2008 Ra-228 2.24 +/- 0.59 2.12 t 0.59 2.18 +/- 0.42 Pass SG-4584, 4585 8/6/2008 Be-7 7.11 +/- 0.20 7.44 +/- 0.37 7.27 +/--0.21 Pass SG-4584,4585 8/6/2008 Cs-137 0.05 +/- 0.01 0.04 +/- 0.01 0.04 +/- 0.00 Pass SG-4584,4585 8/6/2008 K-40 7.88 +/- 10.18 8.02 +/- 0.21 7.95 +/- 5.09 Pass SG-4584, 4585 8/6/2008 Ra-226 3.94 +/--0.18 3.74 +/- 0.22 3.84 +/- 0.14 Pass SG-4573, 4574 8/13/2008 Gr. Alpha 240.72 +/- 8.74 251.53 +/- 9.56 246.13 +/- 6.48 Pass SG-4573,4574 8/13/2008 Gr. Beta 201.60 +/- 4.28 206.88 +/- 4.71 204.24 +/- 3.18 Pass SG-4584, 4585 8/1312008 Gr. Alpha 14.07 +/- 3.10 12.97 +/- 3.04 13.52 +/- 2.17 Pass SG-4584, 4585 8/13/2008 Gr. Beta 22.08 +/- 2.36 23.02 +/- 2.34 22.55 +/- 1.66 Pass DW-80547, 80548 8/13/2008 Gr. Alpha 3.33 +/- 1.11 3.88 +/- 1.07 3,61 +/- 0.77 Pass DW-80551, 80552 8/1312008 U-233/4 2.57 +/- 0.48 2.13 +/- 0.46 2.35 +/- 0.33 Pass DW-80553,80554 8/13/2008 Ra-226 0.92 +/- 0,14 1.21 +/- 0,17 1.07 +/- 0.11 Pass DW-80553,80554 8/13/2008 Ra-228 2.20 +/- 0,61 1.64 +/- 0.56 1.92 +/- 0.41 Pass DW-80566, 80567 8/20/2008 Ra-226 1.10 +/-0.11 1.10 +/--0.10 1.10 +/- 0.07 Pass DW-80566, 80567 8/20/2008 Ra-228 2.01 +0.58 1.74 +/- 0.58 1.88 +/- 0.41 Pass VE-4647, 4648 8/27/2008 K-40 1.97 +/- 0.17 2.00 +/- 0.21 1.99 t 0.14 Pass SL-4690, 4691 9/2/2008 Gr. Beta 2.28 - 0.25 2.35 t 0.24 2.32 +/- 0.17 Pass ME-4732, 4733 9/2/2008 Gr. Beta 2.86 +/- 0.09 2.70 +/- 0.09 2.78 +/- 0.06 Pass ME-4732, 4733 912/2008 K-40 2.44 - 0.37 2.82 +/- 0.51 2.63 +/- 0.32 Pass SG-5180, 5181 9/3/2008 Be-7 15.50 - 0.43 15.54 +/- 0.38 15.52 +/- 0.29 Pass SG-5180, 5181 9/3/2008 Cs-137 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 Pass SG-5180, 5181 9/3/2008 Gr. Alpha 18.74 +/- 3.33 17.61 +/- 3.15 18.18 +/- 2.29 Pass SG-5180, 5181 9/3/2008 Gr. Beta 29.19 +/-2.10 28.49 +/- 2.15 28.84 +/- 1.50 Pass SG-5180, 5181 9/3/2008 K-40 8.55 +/- 0.32 8.11 +/-0.27 8.33 +/- 0.21 Pass SG-5187, 5188 9/3/2008 Be-7 6.18 +/- 0.54 5.90 +/- 0,77 6.04 +/- 0.47 Pass SG-5187, 5188 9/3/2008 K-40 7.16 +/- 0.60 7.29 +/- 0.60 7.23 +/- 0.42 Pass SG-5193, 5194 9/312008 Gr. Alpha 5.80 +/- 1.30 7.00 +/- 1.50 6.40 +/- 0.99 Pass SG-5193, 5194 9/3/2008 Gr. Beta 15.60 +/- 1.10 15.60 +/- 1.10 15.60 +/- 0.78 Pass DW-4871, 4872 9/512008 1-131 1.15 +/-0.27 1.16 +/- 0.31 1.16 +/- 0.21 Pass VE-5022, 5023 9/10/2008 K-40 1.27 +/- 0.14 1.11 +/- 0.06 1.19 +/- 0.08 Pass DW-5337, 5338 9/10/2008 Gr. Beta 3.00 +/- 1.07 2.19 +/- 1.05 2.60 +/- 0.75 Pass WW-4977, 4978 9/1712008 Gr. Beta 3.71 +/- 1.10 2.32 +/- 1.11 3.01 +/- 0.78 Pass BS-5088, 5089 9/19/2008 K-40 10493 +/-607 10299 +/-470 10396 +/-384 Pass DW-80584, 80585 9/19/2008 U-233/4 3.01 +/- 0.52 2.44 +/- 0.47 2.73 +/- 0.35 Pass DW-80584, 80585 9/19/2008 U-238 0.70 + 0.25 0.27 +/- 0.18 0.49 +/- 0.15 Pass DW-80579,80580 9/25/2008 Gr. Alpha 10.69 +/- 1.31 12.84 +/- 1.51 11.77 +/- 1.00 Pass DW-80579, 80580 9/25/2008 Ra-226 3.13 +/- 0.22 2.89 +/- 0.21 3.01 +/- 0.15 Pass DW-80579, 80580 9/25/2008 Ra-228 3.03 +/- 0.73 1.98 +/- 0.69 2.51 +/- 0.50 Pass G-5389,5390 10/1/2008 Be-7 1.49 +/- 0.32 1.36 +/- 0.28 1.43 +/- 0.21 Pass G-5389,5390 10/11/2008 Gr. Beta 10.86 +/- 0.24 11.18 +/-0.25 11.02 +/- 0,17 Pass G-5389,5390 10/1/2008 K-40 7.42 +/- 0.67 8.06 +/- 0.63 7,74 +/- 0.46 Pass A5-4

TABLE A-5. In-House *Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance AP-5814, 5815 10/1/2008 Be-7 0.08 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 Pass SG-6111, 6112 10/612008 Gr. Alpha 9.34 +/- 1.82 8.95 +/- 1.67 9.15 +/- 1,24 Pass SG-6111, 6112 10/6/2008 Gr. Beta 17.46 +/- 1.46 18.86 +/- 1.35 18.16 +/- 0.99 Pass DW-80592, 80593 10/7/2008 Gr. Alpha 2.30 +/- 1.14 1.57 +/- 0.88 1.94 +/- 0.72 Pass DW-80594, 80595 10/7/2008 Ra-228 1.41 +/- 0.55 1.22 +/- 0.50 1.32 +/- 0.37 Pass DW-80650, 80651 10/8/2008 Gr. Alpha 1.30 +/- 0,86 0.12 +/- 0.79 0.71 +/- 0.58 Pass DW-80650, 80651 10/8/2008 Gr. Beta 2.92 +/- 0.69 3.03 +/- 0.64 2.98 +/- 0.47 Pass DW-80629, 80630 10/13/2008 Ra-226 3.12 +/- 0.18 2.87 +0.17 3.00 +/- 0.12 Pass DW-80629, 80630 10/13/2008 Ra-228 2.71 +/- 0.80 3.28 +/- 0.81 3.00 +/- 0.57 Pass DW-80663, 80664 10/13/2008 Gr. Alpha 5.91 +/- 1.70 3.14 +/- 1.44 4.53 +/- 1.11 Pass MI-5572, 5573 10/14/2008 K-40 1391.00 +/- 97.39 1443.90 + 110.60 1417.45 +/- 73.68 Pass MI-5603, 5604 10/1412008 K-40 1412.80 +/- 109.30 1413.80 +/- 110.50 1413.30 +/- 77.71 Pass DW-80676, 80677 10/20/2008 Gr. Alpha 12.20 +/- 1.48 11.87 + 1.54 12.04 +/- 1.07 Pass DW-80676, 80677 10/20/2008 Ra-226 5,04 +/- 0.25 5.10 +/- 0.25 5.07 +/- 0.18 Pass DW-80676, 80677 10/20/2008 Ra-228 5.87 +/- 0.86 6.98 +/- 0.95 6.43 +/- 0.64 Pass SW-80687,80688 10/22/2008 Gr. Alpha 3.42 +/- 1.03 2.98 +/- 1.01 3.20 +/- 0.72 Pass DW-80729, 80730 10/30/2008 Gr. Alpha 8.40 +/- 1.45 7.76 +/- 2.00 8.08 +/- 1.24 Pass DW-80729, 80730 10/30/2008 Gr. Beta 16.94 +/- 1.45 15.41 +/- 1.37 16.18 +/- 1.00 Pass DW-80738, 80739 10/31/2008 U-233/4 2.94 +/- 0.50 3.06 +/- 0.63 3.00 +/- 0.40 Pass DW-80747, 80748 10/31/2008 Ra-226 0,60 +/- 0.09 0.50 +/- 0.08 0.55 +/- 0.06 Pass DW-80747, 80748 10/31/2008 Ra-228 1.33 +/- 0.59 1.38 +/- 0.60 1.36 +/- 0.42 Pass BS-6271,6272 11/3/2008 Gr. Beta 12.26 +/- 1.69 13.78 +/- 1.84 13.02 +/- 1.25 Pass SS-6593,6594 11/19/2008 K-40 12.35 +/- 0.57 13.10 +/- 0.76 12.73 +/- 0.48 Pass MI-7046, 7047 12/16/2008 K-40 1380.10 +/- 109.80 1477.30 +/- 98.32 1428.70 +/- 73.69 Pass DW-80698, 80699 12/23/2008 Ra-226 3.13 +/- 0.22 3.21 +/- 0.23 3.17 +/- 0.16 Pass DW-80698, 80699 12/23/2008 Ra-228 5.48 +/- 0.91 5.86 +/- 0.93 5.67 +/- 0.65 Pass SW-7281,7282 12/30/2008 Gr. Beta 0.87 +/- 0.54 1.35 +/- 0,54 1.11 +/- 0.38 Pass Note: Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

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

A5-5

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STW-1 137 01/01/08 Am-241 1.27 t 0.06 1.23 0.86-1.60 Pass STW-1137 01/01/08 Co-57 23.80 +/- 0.60 22.80 16.00 - 29.60 Pass STW-1137 01/01/08 Co-60 8.60 +/- 0,50 8.40 5.88 - 10.92 Pass STW-I 137e 01/01/08 Cs-134 -0.021 +/- 0.10 0.00 -1.00 - 1.00 Pass STW-1137L 01101108 Cs-1 37 0.00 0.10 0.00 -1.00 - 1.00 Pass STW-1137 01/01/08 Fe-55 32.60 +/- 11.60 36.50 25.60 - 47.50 Pass STW-1 137 01101/08 H-3 515.10 +/-12.70 472.00 330.00 - 614.00 Pass STW-1137 01/01/08 Mn-54 12.90 +/- 0.80 12.10 8.50 - 15.70 Pass STW-1 137 01/01/08 Ni-63 29.50 +/- 2.30 30.70 21.50 - 39.90 Pass STW-1137 01/01/08 Pu-238 0.60 +/- 0.06 0.73 0.51 - 0.95 Pass STW-1137 01/01/08 Pu-239/40 0.019 +/- 0.015 0.01 0.00 - 1.00 Pass STW-1137 01/01/08 Sr-90 12.00 +/- 1.50 11.40 7.98 - 14.82 Pass STW-1 137 01/01/08 Tc-99 9.40 +/- 1.70 11.20 7.80 - 14.60 Pass STW-1137 01/01/08 U-233/4 3.37 +/- 0.20 3.63 2.54 - 4.72 Pass STW-1137 01/01/08 U-238 3.63 +/- 0.21 3.74 2.62 - 4.86 Pass STW-1137 01/01/08 Zn-65 16.90 +/- 1.40 16.30 11.40 - 21.20 Pass STW-1138 01/01/08 Gr. Alpha 0.96 +/- 0.14 1.40 0.00 - 2.80 Pass STW-1138 01101/08 Gr. Bela 2.30 +/- 0.15 2.43 1.22 - 3.65 Pass STAP-1139 01/01/08 Co-57 3,90 +/- 0.07 3.55 2.49 - 4.62 Pass STAP-1 139 01/01/08 Co-60 1.43 +/- 0.07 1.31 0.92 -1.70 Pass STAP-1 139 01/01/08 Cs-134 2.59 +/- 0.16 2.52 1.76 - 3.28 Pass STAP-1 139 01/01/08 Cs-1 37 3.05 t 0.12 2.70 1.89 -3.51 Pass STAP-I 139 01/01/08 Mn-54 0.43 +/- 0.58 0.00 0.00 -1.00 Pass STAP-1 139 01/01/08 Pu-238 0.080 +/- 0.016 0.11 0.07 - 0.14 Pass STAP-1 139 01/01/08 Pu-239/40 0.12 +/- 0.02 0.11 0.08 -0.15 Pass STAP-1 139 01/01/08 Sr-90 1.30 +/- 0.27 1.55 1.08-2.01 Pass STAP-1 139e 01/01/08 U-233/4 0.43 +/- 0,03 0.22 0.15 -0.28 Fail STAP-1 139V 01/01/08 U-238 0.44 +/- 0.03 0.23 0.16 -0.29 Fail STAP-i 139 01/01/08 Zn-65 2.36 +/- 0.18 2.04 1.43 -2.65 Pass STAP-1 140 01/01/08 Gr. Alpha 0.11 +/- 0.03 0.35 0.00 - 0.70 Pass STAP-1140 01/01/08 Gr. Beta 0.34 +/- 0.04 0.29 0.14 - 0.43 Pass STVE-1 141 01/01/08 Co-57 8.30 +/- 0.18 6.89 4.82 - 8.96 Pass STVE-1 141 01/01/08 Co-60 3.03 +/- 0.13 2.77 1.94 - 3.60 Pass STVE-1 141 01/01/08 Cs-134 6.53 +/- 0.29 6,28 4.40 -8.16 Pass STVE- 1141 01/01/08 Cs-137 3.90 +/- 0.19 3.41 2.39 - 4.43 Pass STVE-1 141 01/01/08 Mn-54 5,43 +/- 0.21 4.74 3.32 -6.16 Pass STVE-1141 01/01/08 Zn-65 0.033 +/- 0.10 0.00 0.00 - 1.00 Pass A6-1

TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP)a, Concentration ý Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STSO-1142 01/01/08 Co-57 483.00 +/- 3.00 421.00 295.00 - 547.00 Pass STSO- 1142 01/01/08 Co-60 3.00 +/- 0.80 2.90 0.00 -5.00 Pass STSO-1 142 01/01/08 Cs- 134 896.50 +/- 7.40 854.00 598,00 - 1110.00 Pass STSO-1 142 01/01/08 Cs- 137 624.40 +/- 4.10 545.00 382.00 - 709.00 Pass STSO-1 142 01/01/08 Mn-54 667.20 +/- 3.80 570.00 399.00 - 741.00 Pass STSO-1 142 01101/08 Ni-63 536.00 +/- 15.50 640.00 448.00 - 832.00 Pass STSO-1 142 01/01/08 Pu-238 78.60 +/- 4.80 72.80 51.00 - 94.60 Pass STSO-1142 01/01/08 Pu-239/40 89.10 +/- 4.50 90.10 63.10 -117.10 Pass STSO-1 142 01/01/08 U-233/4 134.41 +/- 5.40 142.00 99.00 - 185.00 Pass STSO-1 142 01/01/08 U-238 139.00 +/- 5.50 148.00 104.00 - 192.00 Pass STSO-1`142 01/01/08 Zn-65 0.093 +/- 091 0.00 0.00 -1.00 Pass STSO-1 158 08/01/08 Am-241 57.73 +/- 4.78 69.10 48.40 - 89.80 Pass STSO-1 158 08101/08 Co-57 353.02 + 2.01 333.00 233.00 - 433,00 Pass STSO-1 158 08/01/08 Co-60 151.99 +/- 1.58 145.00 102.00 - 189.00 Pass STSO-1 158 08/01/08 Cs-134 499.72 +/- 2.65 581.00 407.00 - 755.00 Pass STSO-1 158 08/01/08 Cs-137 2.54 +/- 0.25 2.80 0.00 -5.00 Pass STSO-1 158 08/01/08 K-40 643.94 +/- 15,50 570.00 399.00 -741.00 Pass STSO-1 158 08/01/08 Mn-54 452.14 +/- 2.96 415.00 291.00 -540.00 Pass STSO-1 158 08/01/08 NI-63 803.09 +/- 17.01 760.00 532.00 -988.00 Pass STSO-1 158 08/01/08 Pu-238 0.12 +/- 0.54 0.00 0.00 - 5.00 Pass STSO-1 158 08/01/08 Pu-239/40 60.88 +/- 5.89 55.60 38.90 - 72.30 Pass STSO-1 158 08/01/08 Sr-90 1.95 +/- 2.04 0.00 0.00 - 5.00 Pass STSO-1 158' 08/01/08 Tc-99 337.00 +/- 17.30 335.00 235.00 - 436.00 Pass STSO-1158 08/01/08 U-238 315.67 +/- 11.29 303.00 212.00 - 394.00 Pass STSO-1158 08/01/08 Zn-65 0.10 +/- 2.04 0.00 0.00 - 5.00 Pass STVE-1159 08/01/08 Co-57 8.52 +/- 0.23 7.10 5.00 - 9,20 Pass STVE-1159 08/01/08 Co-60 5.08 +/- 0.19 4.70 3.30 -6.10 Pass STVE-1159 08/01/08 Cs-134 5.26 +/- 0.18 5.50 3.90 - 7.20 Pass STVE-1 159 08/01/08 Cs- 137 0.01 +/- 0.14 0.00 0.00 - 1.00 Pass STVE-1 159 08/01/08 Mn-54 6.39 +/- 0.28 5.80 4.10 -7.50 Pass STVE-1 159 08/01/08 Zn-65 7.73 +/- 0.45 6.90 4.80 - 9.00 Pass A6-2

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STW-t 162 9 08101/08 Am-241 0.20 +/- 0.06 0.00 0.00 -0.10 Fail STW-1 162 08101/08 Co-57 0.03 +/- 0.16 0.00 0.00 - 5.00 Pass STW-1162 08/01/08 Co-60 11.27 +/-0.23 11.60 8,10-15.10 Pass STW-1162 08/01/08 Cs-134 17.93 +/- 0.52 19.50 13.70 - 25.40 Pass STW-1162 08/01/08 Cs-137 23.72 +/- 0.43 23.60 16.50 - 30.70 Pass STW-1162 08/01/08 Fe-55 43.36 +/- 16.81 46.20 32.30 - 60.10 Pass STW-1162 08/01/08 H-3 385.15 +/- 8.93 341.00 239.00 - 443.00 Pass STW-1162 08/01/08 Mn-54 13.87 +/- 0.37 13.70 9,60 - 17.80 Pass STW-1 162 08/01/08 Ni-63 10.77 +/- 2.01 0.00 0.00 - 5.00 Fail STW-1162' 08/01/08 Pu-238 0.33 +/- 0.06 0.50 0.40-0.70 Fail STW-1162 08/01/08 Pu-239/40 0.14 + 0.15 0.00 0.00-0.20 Pass STW-1162 08/01/08 Sr-90 6.49 +/- 1.12 6.45 4.52 - 8.39 Pass STW-t 162 08101/08 Tc-99 1.80 +/- 0.62 3.76 2.63 -4.89 Fail STW-1 162 08/01/08 U-233/4 3.33 +/- 0.18 3.44 2.41 - 4.47 Pass STW-1 162 08/01/08 U-238 3.38 +/- 0.18 3.55 2.49 - 4.62 Pass STW-1162 08/01/08 Zn-65 17.64 +/- 0.61 17.10 12.00 - 22.20 Pass STW-1163 08/01/08 Gr. Alpha 0.08 +/- 0.04 0.00 0.00 -0.56 Pass STW-1163 08/01/08 Gr. Beta 0.12 +/- 0.05 0.00 0.00-1.85 Pass Results obtained by Environmental, Inc.. Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b Results are reported in units of Bqikg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

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

e The results of a repeat analysis were still unacceptable. A spiked air filter was prepared (known activity 4.17 pCi/filter) to verify the methodology; results of the spike analysis were acceptable, 4.64 pCi/filter.

f Corrected result. An error in calculation was found.

9 Included in the testing series as a "false positive". Result of reanalysis, 0.04 +/- 0.01 Bq/L.

Included in the testing series as a "false positive". Result of reanalysis, 3.78 +/- 2.03 Bq/L.

'The reason for the deviation is unknown. Result of the original sample recount: 0.47 +/- 0.07 Bq/L.

The analysis was then repeated from the beginning. Result of reanalysis: 0.51 +/- 0.07 Bq/L.

iThe lower result was due to a higher than average background count used inthe calculation. Average background result:, 4.11 t 0.6 A6-3

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

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Result ' Result d Limits Acceptance STAP-i 143 03/24/08 Am-241 60.48 +/- 3.52 50.1 29.3 -68.7 Pass STAP-1 143 03/24/08 Co-60 650.72 +/- 3.00 730.0 565.0 - 912.0 Pass STAP-1 143 03124/08 Cs- 134 467.50 +/- 5.53 523.0 341.0 -647.0 Pass STAP-1 143 03/24/08 Cs-137 1375.90 +/- 25.41 1450.0 1090.0 - 1900.0 Pass STAP-1 143 03/24/08 Fe-55 145M60 +/- 28.94 241.0 106.0 - 375.0 Pass STAP-1143 e 03/24/08 Mn-54 0.00 +/- 0.00 0.0 0.0-10.0 Pass STAP-1 143 03/24/08 Pu-238 53.65 +/- 1.54 46.8 32.1 -61.5 Pass STAP-i 143 03/24/08 Pu-239/40 70.44 +/- 3.11 64.1 46Z5 -83.0 Pass STAP-1 143 03/24/08 Sr-90 157.60 + 7.70 152.0 66.9 -236.0 Pass STAP-1 143 03/24/08 U-233/4 62.15 +/-3.41 66.7 42.0-98.8 Pass STAP-i 143 03/24/08 U-238 64.11 - 3.29 66,2 42.4 -94.0 Pass STAP-1 143 03/24/08 Uranium 128.40 + 3.29 136.0 69.5 -216.0 Pass STAP-1 143 03/24/08 Zn-65 889.90 + 15.90 872.0 604.0 - 1210.0 Pass STAP-1 144 03/24/08 ' Gr. Alpha 13.08 +/- 1.09 8.8 4.56-13.2 Pass STAP-1144 03/24/08 Gr. Beta 99.90 +/- 3.09 92.2 56.80 - 135.0 Pass STSO-1 145 03/24/08 Ac-228 1269.02 +/- 36.81 1180.0 757,0 - 1660.0 Pass STSO-1 145 03/24/08 Am-241 1268.50 +/- 85.80 1230.0 735.0 - 1580.0 Pass STSO-1 145 03/24/08 Bi-212 1407.10 +/- 56.64 1360.0 357.0 - 2030.0 Pass STSO-1 145 03/24/08 Bi-214 2145.50 +/- 305.63 1790.0 1100.0 -2570.0 Pass STSO-1145 03/24/08 Co-60 5219.70 +/- 90.30 5130.0 3730.0 - 6890.0 Pass STSO-1145 03/24/08 Cs-134 5427.30 +/- 102.94 5640.0 3630.0 - 6790.0 Pass STSO-1 145 03/24/08 Cs-137 6346.60 +/- 201.80 6010.0 4600.0 - 7810.0 Pass STSO-1 145 03/24/08 K-40 11052.70 +/- 181.80 11000.0 7980.0 - 14900.0 Pass STSO-1145 03/24/08 Mn-54 0.00 +/- 0.00 0.0 0.0 -10.0 Pass STSO-1145 03/24/08 Pb-212 1198.20 +/- 96.58 1080.0 697.0 - 1520.0 Pass STSO-1 145 03/24/08 Pb-214 2253.30 +/- 291.60 2020.0 1210.0 - 3010.0 Pass STSO-1 145 03/24/08 Sr-90 6407.00 +/- 277.00 5360.0 1940.0 - 8750.0 Pass STSO-1 145 03/24/08 Th-234 2421.80 +/- 321.00 2030.0 644.0 - 3870.0 Pass STSO-1 145 03/24/08 U-233/4 1227.93 +/- 91.52 2050.0 1240.0 - 2580.0 Fail STSO-1 145 03/24/08 U-238 1319.90 +/- 48.81 2030.0 1240.0 - 2580.0 Pass STSO-1 145 03/24/08 Uranium 2592.00 +/- 140.50 4180.0 2380.0 - 5640.0 Pass STSO-1 145 03/24/08 Zn-65 2936.20 +/- 73.50 2660.0 2110.0 -3570.0 Pass A7-1

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

Concentration (pCiiL)

Lab Code b Date Analysis Laboratory ERA Control Result c Result d Limits Acceptance STVE-1 146 03/24/08 Am-241 1261.50 +/- 73.90 1260.0 718.0 - 1730.0 Pass STVE-1 146 03/24/08 Cm-244 1152.50 +/- 57.44 1200.0 591.0 - 1870.0 Pass STVE-1 146 03/24/08 Co-60 912.41 +/- 13.59 888,0 600.0 - 1280.0 Pass STVE-1 146 03/24/08 Cs-134 1547.70 +/- 38.81 1540.0 882.0 - 2130.0 Pass STVE-1 146 03/24/08 Cs-1 37 1163.80 +/- 20.62 1100.0 807.0 - 1530.0 Pass STVE-1 146 03/24/08 K-40 22186.00 +/- 339.40 24600.0 17700.0 - 34800.0 Pass STVE-1146 03/24/08 Mn-54 0,00 +/- 0.00 0.0 0.0 -10.0 Pass STVE-1 146 03/24/08 Sr-90 3825.90 +/- 140.66 4130,0 2310.0 - 5480.0 Pass STVE-1 146 03/24/08 U-233/4 2753.30 +/- 227.90 3070.0 2110.0 - 4070.0 Pass STVE-1 146 03/24/08 U-238 2697.10 +/- 143.20 3050.0 2140.0 - 3850.0 Pass STVE-1 146 03/24/08 Uranium 5586.10 +/- 455.20 6260.0 4300.0 - 8080.0 Pass STVE-1`146 03/24/08 Zn-65 1676.80 +/- 43.00 1430.0 1030.0 - 1960.0 Pass STW-1147 03/24/08 Am-241 97.56 +/- 1.02 90.9 62.0 - 124.0 Pass STW-1 147 03/24/08 Co-60 1430.00 +/- 33.33 1420.0 1240.0 - 1680,0 Pass STW-1 147 03124/08 Cs-134 730.18 +/- 33.39 751.0 555.0 - 862.0 Pass STW-1 147 03/24/08 Cs-1 37 1947.80 +/- 13.80 1990.0 1690.0 - 2380.0 Pass STW-1147 03/24/08 Fe-55 1422.70 +/- 172.16 2080.0 1210.0 - 2780.0 Pass STW-1147 03124/08 Mn-54 0.00 +/- 0.00 0.0 0.0 - 10.0 Pass STW-1 147 03/24/08 Pu-238 144.16 +/- 4.54 135.0 102.0 - 168.0 Pass STW-1 147 03/24/08 Pu-239/40 82.16 +/- 2.50 80.7 62.4 -99.8 Pass STW-1 147 03/24/08 Sr-90 512.03 +/- 43.37 512.0 325.0 - 684.0' Pass STW-1147 03/24/08 U-233/4 74.40 +/- 1.20 81.0 61.0 -104.0 Pass STW-1 147 03/24/08 U-238 75.10 +/- 1.35 80.3 61.3 -99.5 Pass STW-1 147 03124/08 Uranium 152.10 +/- 2.55 165.0 119.0 - 220,0 Pass STW-1 147 03/24108 Zn-65 708.90 +/- 29.00 694.0 588.0 - 865.0 Pass STW-1 120 03/19/07 Uranium 339.60 +/- 10.66 391.0 282.0 - 521.0 Pass STW-1 120 03/19/07 Zn-65 2009.00 +/- 36.40 1910.0 1600.0 - 2410.0 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant In the crosscheck program for proficiency testing administered by Environmental Resources Associates, serving as a replacement for studies conducted previously by the Environmental Measurements Laboratory Quality Assessment Program (EML).

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

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. /

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

f 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 2008 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 Stations 48 & 53 (pCi/m 3 ) Gross Beta (339) 0.01 0.031 (270/270) 37 0.032(54/54) 0.033 (69/69) 0 (0.005-0.061) 2.0 miles NNW (0.017-0.061) (0.014-0.075)

Gamma (26) 0.087 (6/6)

Be-7 0.091 (20/20) 37 0.096 (4/4) 0 (0.062-0.150) 2.0 miles NNW (0.069-0.115) (0.056-0.115) 1-131 (339) 0.07 - (0/270) N/A N/A - (0/69) 0 External Stations 39, 48 &

Radiation 53 (mR/day) Dosimeters (346) 0.115 (328/328) 47 0.174 (8/8) 0.124 (18/18) 0 (0.010-0.248) 0.16 miles S (0.1.21-0.248) (0.087-0.197)

Surface Water JRR (pCi/I) Gamma (24) -(0/12) N/A N/A -(0/12) 0 Tritium (24) 3000 13137 (12/12) SP 13137 (12/12) -(0/12) 0 (10079-16607) 3.2 miles SSE (10079-16607)

B-12 Ground Water (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 Stat ion Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2008 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 (24) 1 -(0/12) N/A N/A -(0/12) 0 (pCi/I)

Gross Beta (24) 4 3.4 (12/12) IO-DW 3.4 (12/12) 3.3 (12/12) 0 (2.1-5.0) 26.1 miles SSE (2.1-5.0) (1.9-4.5)

Gamma (24) -(0/12) N/A N/A -(0/12) 0 Tritium (8) 2000 -(0/4) N/A N/A -(0/4) 0 Shoreline Gamma (5) JRR Sediment (pCi/kg dry) K-40 11851.7 (3/3) DC 12445.5 (2/2) 10151 (2/2) 0 (10664-13846) 0.8 miles WNW (11045-13846) (9671-10631)

Co-60 60.9 (1/3) DC 60.9(1/2) -(0/2) 0 0.8 miles WNW Cs-137 180 129.8 (2/3) DC 160.9 (1/2) 131.1 (1/2) 0 (98.7-160.9) 0.8 miles WNW Fish Gamma (18) JRR (pCi/kg wet)

K-40 2957 (11/11) CCL 2957 (11/11) 3010.7 (7/7) 0 (2026.8-3733.5) 0.6 miles (2026.8-3733.5) (2512.4-3440.6)

Tritium (18) 7828.5 (11/11) CCL 7828.5 (11/11) -(0/7) 0 (3861-11140) 0.6 miles (3861-11140)

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 2008 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 (21) D-2 Garden (pCi/kg wet) Be-7 785.4 (13/14) N-1 843.8 (6/7) 756.7 (7/7) 0 (381.2-1279.2) 2.4 miles W (424.1-1279.2) (476.9-1098.0)

K-40 4454.2 (14/14) Q-6 5086.8 (7/7) 4967.8 (7/7) 0 (2744.8-6494.2) 2.4 miles NW (3627.7-6494.2) (3268.5-6417.1)

NR-U1 Crops Gamma (3)

(pCi/kg wet)

K-40 2765 (1/1) NR-D1 2765 (1/1) 7657.6 (2/2) 0 8.9 miles S (2710-12605)

Bottom Gamma (12) JRR Sediment (pCi/kg dry)

K-40 11054.1 (10/10) DC 11863.0 (7/7) 14128.5 (2/2) 0 (7307-16124) 0.8 miles WNW (7307-16124) (13202-15055)

Co-60 111.5 (2/10) DC 111.5(2/7) - (0/2) 0 (95.6-127.4) 0.8 miles WNW (95.6-127.4)

Cs-1 37 133.8 (7/10) DC 162.8 (5/7) 120.7 (1/2) 0 (59.6-216.5) 0.8 miles WNW (70.2-216.5)

Page B-4

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

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2008 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 (3) No Control Vegetation (pCi/kg wet) Be-7 512.6 (2/3) EEA 709.2(1/1) 0 (316.0-709.2) 3.0 miles NNW K-40 2968.6 (3/3) EEA 3721.2 (1/1) 0 (2124.7-3721.2) 3.0 miles NNW Cs-137 34.8 (1/3) EEA 34.8 (1/1) 0 3.0 miles NNW Terrestrial Gamma (2) No Control Vegetation (pCi/kg wet) Be-7 1577.6 (2/2) MUDS 2467.2 (1/1) 0 (688.1-2467.2) 1.5 miles WNW K-40 4761.2 (2/2) MUDS 4933.9 (1/1) 0 (4588.5-4933.9) 1.5 miles WNW Soil Gamma (2) No Control (pCi/kg dry)

K-40 8538.1 (2/2) EEA 10250.0 (1/1) 0 (6826-10250) 3.0 miles NNW Cs-137 187.9 (2/2) EEA 249.5 (1/1) 0 (126.2-249.5) 3.0 miles NNW Page B-5

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

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2008 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 (1) No Control (pCi/kg wet)

K-40 3203.0 (1/1) A1.6 3203.0 (1/1) 0 1.6 miles N Tritium (1) 243 (1/1) A1.6 243 (1/1) 0 1.6 miles N 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/m3 ) (pCi/rn3 )

27-DEC-07 03-JAN-08 292 0.039 +1- 0.004 < 0.020 03-JAN-08 10-JAN-08 290 0.027 +1- 0.004 < 0.018 03-JAN-08 10-JAN-08 290 0.030 +1- 0.004 Duplicate 10-JAN-08 16-JAN-08 254 0.048 +1- 0.005 0.027 16-JAN-08 23-JAN-08 317 0.035 +1- 0.004 0.015 23-JAN-08 30-JAN-08 311 0.040 +1- 0.004 0.018 30-JAN-08 07-FEB-08 337 0.035 +1- 0.004 0.013 07-FEB-08 13-FEB-08 266 0.034 +1- 0.004 0.014 13-FEB-08 20-FEB-08 52 0.033 +1- 0.016 0.057 20-FEB-08 27-FEB-08 303 0.029 +1- 0.004 0.012 27-FEB-08 05-MAR-08 292 0.025 +1- 0.004 0.015 05-MAR-08 12-MAR-08 313 0.035 +1- 0.004 0.018 12-MAR-08 19-MAR-08 306 0.024 +1- 0.004 0.010 12-MAR-08 19-MAR-08 306 0.020 +1- 0.003 Duplicate 19-MAR-08 26-MAR-08 306 0.021 +1- 0.004 0.008 26-MAR-08 02-APR-08 295 0.020 +1- 0.004 0.013 02-APR-08 09-APR-08 297 0.021 +1- 0.004 0.013 09-APR-08 16-APR-08 291 0.020 +1- 0.004 0.017 16-APR-08 23-APR-08 299 0.028 +1- 0.004 0.009 23-APR-08 30-APR-08 307 0.025 +1- 0.004 0.010 30-APR-08 08-MAY-08 352 0.019 +1- 0.003 0.007 08-MAY-08 15-MAY-08 295 0.014 +1- 0.003 0.016 08-MAY-08 15-MAY-08 295 0.016 +1- 0.003 Duplicate 15-MAY-08 21 -MAY-08 268 0.030 +1- 0.004 0.011 21 -MAY-08, 28-MAY-08 379 0.020 +1- 0.003 0.009 28-MAY-08 04-JUN-08 295 0.024 +1- 0.004 0.015 04-JUN-08 11-JUN-08 303 0.021 +1- 0.004 0.018 11-JUN-08 18-JUN-08 309 0.021 +1- 0.003 0.010 18-JUN-08 25-JUN-08 303 0.032 +1- 0.004 0.020 25-JUN-08 02-JUL-08 290 0.029 +1- 0.004 0.018 02-JUL-08 09-JUL-08 302 0.025 +1- 0.004 0.014 09-JUL-08 16-JUL-08 300 0.026 +1- 0.003 0.015 16-JUL-08 23-JUL-08 296 0.042 +1- 0.004 0.012 23-JUL-08 30-JUL-08 302 0.032 +1- 0.003 0.016 30-JUL-08 06-AUG-08 300 0.037 +1- 0.004 0.010 06-AUG-08 13-AUG-08 301 0.042 +1- 0.004 0.013 13-AUG-08 20-AUG-08 291 0.038 +1- 0.004 0.017, 20-AUG-08 27-AUG-08 303 0.033 +1- 0.004 0.047 27-AUG-08 04-SEP-08 357 0.033 +1- 0.003 0.015 04-SEP-08 10-SEP-08 249 0.032 +1- 0.004 0.015 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- I

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

(pCi/m3 (pCi/m 3 )

10-SEP-08 17-SEP-08 301 0.024 +1- 0.003 0.011 17-SEP-08 24-SEP-08 297 0.040 +1- 0.004 0,015 24-SEP-08 01-OCT-08 295 0.046 +1- 0.004 0.012 01-OCT-08 08-OCT-08 301 0.035 +1- 0.004 0,018 08-OCT-08 15-OCT-08 307 0.031 +1- 0.004 0.013 15-OCT-08 23-OCT-08 341 0.034 +1- 0.003 0.016 23-OCT-08 29-OCT-08 254 0.025 +1- 0.004 0.019 29-OCT-08 05-NOV-08 303 0.049 +1- 0.004 0.013 05-NOV-08 13-NOV-08 347 0.020 +1- 0.003 0.018 13-NOV-08 19-NOV-08 263 0.032 +1- 0.004 0.011 19-NOV-08 26-NOV-08 302 0.034 +1- 0.004 0.017 26-NOV-08 03-DEC-08 300 0.036 +1- 0.004 0.015 03-DEC-08 11-DEC-08 350 0.033 +1- 0.003 0.019 03-DEC-08 11-DEC-08 350 0.034 +1- 0.003 Duplicate 11-DEC-08 17-DEC-08 268 0.037 +1- 0.004 0.019 17-DEC-08 26-DEC-08 378 0.047 +1- 0.004 0.017 26-DEC-08 31-DEC-08 212 0.037 +1- 0.005 0.035 31-DEC-08 07-JAN-09 291 0.040 +1- 0.004 0.010 2008 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/m 3 ) (pCilm3 )

27-DEC-07 03-JAN-08 302 0.041 +1- 0.004 < 0.019 27-DEC-07 03-JAN-08 302 0.042 +1- 0.004 Duplicate 03-JAN-08 10-JAN-08 274 0.028 +1- 0.004 < 0.019 10-JAN-08 16-JAN-08 259 0.041 +1- 0.005 < 0.027 16-JAN-08 23-JAN-08 326 0.033 +1- 0.004 < 0.014 23-JAN-08 30-JAN-08 300 0.036 +1- 0.004 < 0.019 30-JAN-08 07-FEB-08 346 0.031 +1- 0.004 < 0.012 07-FEB-08 13-FEB-08 260 0.041 +1- 0.004 < 0.015 13-FEB-08 20-FEB-08 305 0.029 +1- 0.004 < 0.010 13-FEB-08 20-FEB-08 305 0.032 +1- 0.004 Duplicate 20-FEB-08 27-FEB-08 311 0.027 +1- 0.004 < 0.012 27-FEB-08 05-MAR-08 297 0.025 +1- 0.004 < 0.015 05-MAR-08 12-MAR-08 307 0.034 +1- 0.004 < 0.019 12-MAR-08 19-MAR-08 309 0.021 +1- 0.004 < 0.010 19-MAR-08 26-MAR-08 315 0.019 +1- 0.003 < 0.007 26-MAR-08 02-APR-08 301 0.018 +1- 0.003 < 0.012 02-APR-08 09-APR-08 303 0.022 +1- 0.004 < 0.012 09-APR-08 16-APR-08 297 0.019 +1- 0.003 < 0.017 09-APR-08 16-APR-08 297 0.018 +1- 0.003 Duplicate 16-APR-08 23-APR-08 307 0.027 +1- 0.004 < 0.009 23-APR-08 30-APR-08 309 0.030 +1- 0.004 < 0.010 30-APR-08 08-MAY-08 339 0.005 +1- 0.002 < 0.007 08-MAY-08 15-MAY-08 300 0.016 +1- 0.003 < 0.016 15-MAY-08 21-MAY-08 263 0.031 +1- 0.004 < 0.012 21-MAY-08 28-MAY-08 309 0.021 +1- 0.004 < 0.011 28-MAY-08 04-JUN-08 291 0.029 +1- 0.004 < 0.015 04-JUN-08 11-JUN-08 302 0.020 +1- 0.003 < 0.018 11-JUN-08 18-JUN-08 305 0.021 +1- 0.004 < 0.010 18-JUN-08 25-JUN-08 299 0.032 +1- 0.004 < 0.020 18-JUN-08 25-JUN-08 299 0.030 +1- 0.004 Duplicate 25-JUN-08 02-JUL-08 298 0.028 +1- 0.004 < 0.018 02-JUL-08 09-JUL-08 303 0.024 +1- 0.004 < 0.014 09-JUL-08 16-JUL-08 301 0.025 +1- 0.003 < 0.015 16-JUL-08 23-JUL-08 296 0.037 +1- 0.004 < 0.012 23-JUL-08 30-JUL-08 304 0.035 +1-* 0.004 < 0.016 30-JUL-08 06-AUG-08 299 0.036 +1- 0.004 < 0.010 06-AUG-08 13-AUG-08 305 0.041 +1- 0.004 < 0.013 13-AUG-08 20-AUG-08 289 0.040 +1- 0.004 < 0.017 20-AUG-08 27-AUG-08 296 0.032 +1- 0.004 < 0.034 27-AUG-08 04-SEP-08 358 0.034 +1- 0.003 < 0.015 2008 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 Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCi/m 3 )

04-SEP-08 10-SEP-08 249 0.033 +1- 0.004 0.015 10-SEP-08 17-SEP-08 300 0.024 +1- 0.003 0.011 17-SEP-08 24-SEP-08 298 0.041 +1- 0.004 0.015 24-SEP-08 01-OCT-08 293 0.046 +1- 0.004 0.012 01-OCT-08 08-OCT-08 299 0.035 +1- 0.004 0.019 08-OCT-08 15-OCT-08 305 0.029 +1- 0.003 0.014 15-OCT-08 23-OCT-08 340 0.037 +1- 0.004 0.016 23-OCT-08 29-OCT-08 254 0.028 +1- 0.004 0.019 29-OCT-08 05-NOV-08 296 0.054 +1- 0.004 0.014 05-NOV-08 13-NOV-08 349 0.023 +1- 0.003 0.018 13-NOV-08 19-NOV-08 265 0.032 +1- 0.004 0.011 19-NOV-08 26-NOV-08 308 0.036 +1- 0.004 0.010 26-NOV-08 03-DEC-08 303 0.041 +1- 0.004 0.015 03-DEC-08 11-DEC-08 347 0.032 +1- 0.003 0.019 11-DEC-08 17-DEC-08 268 0.034 +1- 0.004 0.019 17-DEC-08 26-DEC-08 379 0.048 +1- 0.004 0.017 26-DEC-08 31-DEC-08 218 0.041 +1- 0.005 0.034 31-DEC-08 07-JAN-09 293 0.042 +1- 0.004 0.010 2008 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 ) (pCim 3 )

27-DEC-07 03-JAN-08 310 0.039 +1- 0.004 0.019 03-JAN-08 10-JAN-08 295 0.028 +1- 0.004 0.018 10-JAN-08 16-JAN-08 254 0.045 +1- 0.005 0.027 16-JAN-08 23-JAN-08 324 0.036 +1- 0.004 0.014 23-JAN-08 30-JAN-08 305 0.034 +1- 0.004 0.019 30-JAN-08 07-FEB-08 344 0.042 +1- 0.004 0.013 07-FEB-08 13-FEB-08 262 0.033 +1- 0.004 0.015 13-FEB-08 20-FEB-08 304 0.029 +1- 0.004 0,010 20-FEB-08 27-FEB-08 306 0.026 +1- 0.004 0.012 27-FEB-08 05-MAR-08 297 0.028 +1- 0.004 0.015 27-FEB-08 05-MAR-08 297 0.028 +1- 0.004 Duplicate 05-MAR-08 12-MAR-08 302 0.033 +1- 0.004 0.019 12-MAR-08 19-MAR-08 307 0.022 +1- 0.004 0.010 19-MAR-08 26-MAR-08 305 0.019 +1- 0.004 0.008 26-MAR-08 02-APR-08 293 0.019 +1- 0.004 0.013 26-MAR-08 02-APR-08 293 0.016 +1- 0.003 0.013 02-APR-08 09-APR-08 304 0.021 +1- 0.004 0.012 09-APR-08 16-APR-08 302 0.018 +1- 0.003 0.017 T16-APR-08 23-APR-08 299 0.028 +1- 0.004 0.009 23-APR-08 30-APR-08 305 0.025 +1- 0.004 0.010 23-APR-08 30-APR-08 305 0.027 +1- 0.004 Duplicate 30-APR-08 08-MAY-08 348 0.018 +1- 0.003 0.007 08-MAY-08 15-MAY-08 301 0.019 +1- 0.003 0.016 15-MAY-08 21-MAY-08 266 0.029 +1- 0.004 0.011 21 -MAY-08 28-MAY-08 309 0.019 +1- 0.003 0.011 28-MAY-08 04-JUN-08 293 .0.029 +1- 0.004 0.015 04-JUN-08 11-JUN-08 303 0.021 +1- 0.003 0.018 11-JUN-08 18-JUN-08 308 0.022 +1- 0.004 0.010 11-JUN-08 18-JUN-08 308 0.024 +1- 0.004 Duplicate 18-JUN-08 25-JUN-08 300 0.030 +1- 0.004 0.020 25-JUN-08 02-JUL-08 293 0.029 +1- 0.004 0.018 02-JUL-08 09-JUL-08 303 0.028 +1- 0.004 0.014 09-JUL-08 16-JUL-08 302 0.022 +1- 0.003 0.015 16-JUL-08 23-JUL-08 290 0.040 +1- 0.004 0.012 23-JUL-08 30-JUL-08 302 0.037 +1- 0.004 0.016 30-JUL-08 06-AUG-08 301 0.039 +1- 0.004 0.010 06-AUG-08 13-AUG-08 303 0.042 +1- 0.004 0.013 13-AUG-08 20-AUG-08 293 0.038 +1- 0.004 0.017 20-AUG-08 27-AUG-08 300 0.033 +1- 0.004 0.044 27-AUG-08 04-SEP-08 359 0.034 +1- 0.003 0.015 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 5

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

04-SEP-08 10-SEP-08 248 0.034 +1- 0.004 0.015 10-SEP-08 17-SEP-08 299 0.023 +1- 0.003 0.011 17-SEP-08 24-SEP-08 298 0.039 +1- 0.004 0.015 24-SEP-08 01-OCT-08 298 0.044 +1- 0.004 0.012 01-OCT-08 08-OCT-08 299 0.034 +1- 0.004 0.019 08-OCT-08 15-OCT-08 307 0.030 +1- 0.003 0,013 15-OCT-08 23-OCT-08 342 0.035 +1- 0.003 0.016 23-OCT-08 29-OCT-08 217 0.030 +1- 0.004 0.022 29-OCT-08 05-NOV-08 299 0.053 +1- 0.004 0.013 05-NOV-08 13-NOV-08 345 0.021 +1- 0.003 0.018 13-NOV-08 19-NOV-08 267 0.033 +1- 0.004 0.011 19-NOV-08 26-NOV-08 305 0.038 +1- 0.004 0.017 26-NOV-08 03-DEC-08 302 0.041 +1- 0.004 0.015 03-DEC-08 11-DEC-08 347 0.033 +1- 0.003 0.019 11-DEC-08 17-DEC-08 277 0.033 +1- 0.004 0.018 17-DEC-08 26-DEC-08 379 0.044 +1- 0.004 0.017 26-DEC-08 31-DEC-08 223 0.036 +1- 0.005 0.033 31-DEC-08 07-JAN-09 295 0.039 +1- 0.004 0.010 2008 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/m 3 ) (pCi/m 3 )

27-DEC-07 03-JAN-08 323 0.043 +/- 0.004 < 0.018 03-JAN-08 10-JAN-08 281 0.028 +/- 0.004 < 0.019 10-JAN-08 16-JAN-08 263 0.061 +1- 0.006 < 0.026 10-JAN-08 16-JAN-08 263 0.052 +1- 0.005 ReCount 16-JAN-08 23-JAN-08 320 0.034 +1- 0.004 < 0.014 23-JAN-08 30-JAN-08 302 0.039 +1- 0.004 < 0.019 30-JAN-08 07-FEB-08 343 0.033 +1- 0.004 < 0.013 07-FEB-08 13-FEB-08 266 0.034 +1- 0.004 < 0.014 13-FEB-08 20-FEB-08 305 0.031 +1- 0.004 < 0.010 20-FEB-08 27-FEB-08 300 0.029 +1- 0.004 < 0.012 27-FEB-08 05-MAR-08 298 0.024 +1- 0.004 < 0.015 05-MAR-08 12-MAR-08 311 0.029 +1- 0.004 < 0.019 12-MAR-08 19-MAR-08 303 0.024 +1- 0.004 < 0.010 19-MAR-08 26-MAR-08 309 0.024 +1- 0.004 < 0.007 26-MAR-08 02-APR-08 308 0.017 +1- 0.003 < 0.012 02-APR-08 09-APR-08 301 0.021 +1- 0.004 < 0.012 09-APR-08 16-APR-08 292 0.020 +1- 0.004 < 0.017 16-APR-08 23-APR-08 309 0.028 +1- 0.004 < 0.009 23-APR-08 30-APR-08 328 0.024 +1- 0.003 < 0.009 30-APR-08 08-MAY-08 352 0.025 +1- 0.003 < 0.007 08-MAY-08 15-MAY-08 302 0.017 +1- 0.003 < 0.016 15-MAY-08 21-MAY-08 275 0.034 +1- 0.004 < 0.011 15-MAY-08 21 -MAY-08 275 0.035 +1- 0.004 < 0.011 Duplicate 21 -MAY-08 28-MAY-08 306 0.021 +1- 0.004 < 0.011 28-MAY-08 04-JUN-08 300 0.028 +1- 0.004 < 0.015 04-JUN-08 11-JUN-08 309 0.020 +1- 0.003 < 0.018 11-JUN-08 18-JUN-08 322 0.021 +1- 0.003 < 0.009 18-JUN-08 25-JUN-08 306 0.030 +1- 0.004 < 0.020 25-JUN-08 02-JUL-08 302 0.027 +1- 0.004 < 0.018 02-JUL-08 09-JUL-08 304 0.025 0.004 < 0.014 09-JUL-08 16-JUL-08 308 0.025 +1- 0.003 < 0.014 16-JUL-08 23-JUL-08 306 0.039 +1- 0.004 < 0.011 23-JUL-08 30-JUL-08 307 0.033 +1- 0.003 < 0.016 23-JUL-08 30-JUL-08 307 0.033 +1- 0.003 Duplicate 30-JUL-08 06-AUG-08 302 0.036 +1- 0.004 < 0.010 06-AUG-08 13-AUG-08 309 0.040 +1- 0.004 < 0.013 13-AUG-08 20-AUG-08 298 0.037 +1- 0.004 < 0.016 20-AUG-08 27-AUG-08 302 0.033 +1- 0.004 < 0.041 20-AUG-08 27-AUG-08 302 0.031 +1- 0.004 Duplicate 27-AUG-08 04-SEP-08 373 0.032 +1- 0.003 < 0.015 2008 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/ma) 04-SEP-08 10-SEP-08 250 0.034 +1- 0.004 < 0.015 10-SEP-08 17-SEP-08 301 0.023 +1- 0.003 < 0.011 17-SEP-08 24-SEP-08 306 0.038 +1- 0.004 < 0.015 24-SEP-08 01-OCT-08 299 0.046 +1- 0.004 < 0.012 01-OCT-08 08-OCT-08 307 0.029 +1- 0.003 < 0.018 08-OCT-08 15-OCT-08 312 0.028 +1- 0.003 < 0.013 15-OCT-08 23-OCT-08 388 0.035 +1- 0.003 < 0.014 23-OCT-08 29-OCT-08 257 0.027 +1- 0.004 < 0.019 29-OCT-08 05-NOV-08 304 0.055 +/- 0.004 < 0.013 05-NOV-08 13-NOV-08 351 0.020 +/- 0.003 < 0.017 13-NOV-08 19-NOV-08 264 0.033 +1- 0.004

• 0.011 13-NOV-08 19-NOV-08 264 0.031 +1- 0.004 Duplicate 19-NOV-08 26-NOV-08 306 0.038 +1- 0.004 < 0.017 26-NOV-08 03-DEC-08 300 0.043 +1- 0.004 < 0.015 03-DEC-08 11-DEC-08 348 0.032 +1- 0.003 < 0.019 11-DEC-08 17-DEC-08 267 0.038 +1- 0.004 < 0.019 17-DEC-08 26-DEC-08 379 0.052 +1- 0.004 < 0.017 26-DEC-08 31-DEC-08 223 0.037 +1- 0.005 < 0.033 31-DEC-08 07-JAN-09 296 0.036 +1- 0.004 < 0.010 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 8

Air Particulate and Charcoal Filters Location: 048 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCilm3) 27-DEC-07 03-JAN-08 306 0.040 +1- 0,004 0.019 03-JAN-08 10-JAN-08 304 0.026 +1- 0.003 0.017 10-JAN-08 16-JAN-08 255 0.045 +1- 0.005 0.027 16-JAN-08 23-JAN-08 317 0.033 +1- 0,004 0.015 23-JAN-08 30-JAN-08 301 0.035 +1- 0.004 0.019 30-JAN-08 07-FEB-08 339 0.037 +1- 0,004 0.013 07-FEB-08 13-FEB-08 261 0.036 +1- 0.004 0.015 13-FEB-08 20-FEB-08 36 0.041 +1- 0.023 0.083 20-FEB-08 27-FEB-08 321 0.030 +1- 0.004 0.012 27-FEB-08 05-MAR-08 298 0.023 +1- 0.004 0.015 05-MAR-08 12-MAR-08 318 0.032 +1- 0.004 0.018 05-MAR-08 12-MAR-08 318 0.030 +1- 0.004 Duplicate 12-MAR-08 19-MAR-08 303 0.021 +1- 0.004 0.010 19-MAR-08 26-MAR-08 305 0.021 +1- 0.004 0.008 26-MAR-08 02-APR-08 293 0.015 +1- 0.003 0.013 02-APR-08 09-APR-08 297 0.022 +1- 0.004 0.013 09-APR-08 16-APR-08 300 0.022 +1- 0.004 0.017 16-APR-08 23-APR-08 55 0.033 +1- 0.015 0.048 23-APR-08 30-APR-08 307 0.022 +1- 0.003 0.010 30-APR-08 08-MAY-08 340 0.020 +1- 0.003 0.007 30-APR-08 08-MAY-08 340 0.021 +1- 0.003 Duplicate 08-MAY-08 15-MAY-08 303 0.014 -f-i- 0,003 0.016 15-MAY-08 21-MAY-08 262 0.027 +1- 0.004 0.012 21-MAY-08 28-MAY-08 308 0.022 +1- 0.004 0.011 28-MAY-08 04-JUN-08 310 0.023 +1- 0.003 0.014 04-JUN-08 11-JUN-08 300 0.019 +1- 0.003 0.018 11-JUN-08 18-JUN-08 309 0.022 +1- 0.004 0.010 18-JUN-08 25-JUN-08 300 0.033 +1- 0.004 0.020 25-JUN-08 02-JUL-08 78 0.056 -f-/- 0.012 0.068 02-JUL-08 09-JUL-08 300 0.027 -i-I- 0.004 0.014 09-JUL-08 16-JUL-08 300 0.026 +1- 0.003 0.015 16-JUL-08 23-JUL-08 272 0.041 +1- 0,004 0.013 23-JUL-08 30-JUL-08 294 0.031 +1- 0.003 0.017 30-JUL-08 06-AUG-08 299 0.036 +1- 0.004 0.010 06-AUG-08 13-AUG-08 306 0.041 +1- 0.004 0.013 20-AUG-08 27-AUG-08 279 0.033 +1- 0,004 0.043 27-AUG-08 04-SEP-08 368 0.034 +1- 0.003 0.015 04-SEP-08 10-SEP-08 248 0.035 +1- 0.004 0.015 10-SEP-08 17-SEP-08 303 0.023 +1- 0.003 0.011 17-SEP-08 24-SEP-08 296 0.041 +1- 0.004 0.015 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 9

Air Particulate and Charcoal Filters Location: 048 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCilm3 ) (pCilm3 )

17-SEP-08 24-SEP-08 296 0.037 +/- 0.004 Duplicate 24-SEP-08 01-OCT-08 294 0.046 +1- 0.004 0.012 01-OCT-08 08-OCT-08 300 0.034 +1- 0.004 0.018 08-OCT-08 15-OCT-08 305 0.026 +1- 0.003 0.014 15-OCT-08 23-OCT-08 337 0.036 +1- 0.003 0.016 23-OCT-08 29-OCT-08 254 0.028 +1- 0.004 0.019 29-OCT-08 05-NOV-08 300 0.041 +1- 0.004 0.013 05-NOV-08 13-NOV-08 351 0.019 +1- 0.003 0.017 13-NOV-08 19-NOV-08 264 0.030 +1- 0.004 0.011 19-NOV-08 26-NOV-08 304 0.034 +1- 0.004 0.014 26-NOV-08 03-DEC-08 304 0.034 +1- 0.004 0.015 26-NOV-08 03-DEC-08 304 0.037 +1- 0.004 Duplicate 03-DEC-08 11-DEC-08 341 0.030 +1- 0.003 0.019 11-DEC-08 17-DEC-08 256 0.039 +1- 0.004 0.020 17-DEC-08 26-DEC-08 378 0.046 +1- 0.004 0.017 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 10

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 ) (pCilm3 )

27-DEC-07 03-JAN-08 310 0.041 +1- 0.004 0.019 03-JAN-08 10-JAN-08 296 0.031 +1- 0.004 0.018 10-JAN-08 16-JAN-08 252 0.042 +1- 0.005 0.027 16-JAN-08 23-JAN-08 323 0.035 +1- 0.004 0.014 16-JAN-08 23-JAN-08 323 0.034 +1- 0.004 Duplicate 23-JAN-08 30-JAN-08 305 0.040 +1- 0.004 0.019 30-JAN-08 07-FEB-08 346 0.037 +1- 0.004 0.012 07-FEB-08 13-FEB-08 259 0.032 +1- 0.004 0.015 13-FEB-08 20-FEB-08 305 0.029 +1- 0.004 0.010 20-FEB-08 27-FEB-08 307 0.029 .9-I- 0.004 0.012 27-FEB-08 05-MAR-08 297 0.023 +1- 0.004 0.015 05-MAR-08 12-MAR-08 306 0.040 +1- 0.004 0.019 12-MAR-08 19-MAR-08 306 0.024 +1- 0.004 0.010 19-MAR-08 26-MAR-08 309 0.019 +1- 0.004 0.007 26-MAR-08 02-APR-08 297 0.017 +1- 0.003 0.013 02-APR-08 09-APR-08 303 0.022 +1- 0.004 0.012 09-APR-08 16-APR-08 301 0.018 +1- 0.003 0.017 16-APR-08 23-APR-08 303 0.027 +1- 0.004 0.009 23-APR-08 30-APR-08 310 0.027 +1- 0.004 0.010 30-APR-08 08-MAY-08 352 0.024 +1- 0.003 0.007 08-MAY-08 15-MAY-08 301 0.024 +1- 0.004 0.016 15-MAY-08 21-MAY-08 348 0.028 +1- 0.003 0.009 21-MAY-08 28-MAY-08 302 0.022 +1- 0.004 0.011 28-MAY-08 04-JUN-08 291 0.027 +1- 0.004 0.015 04-JUN-08 11-JUN-08 304 0.021 +1- 0.003 0.018 11-JUN-08 18-JUN-08 313 0.022 +1- 0.003 0.009 18-JUN-08 25-JUN-08 292 0.032 +1- 0.004 0.021 25-JUN-08 02-JUL-08 298 0.026 +1- 0.004 0.018 02-JUL-08 09-JUL-08 303 0.029 +1- 0.004 0.014 09-JUL-08 16-JUL-08 300 0.025 +1- 0.003 0.015 16-JUL-08 23-JUL-08 297 0.042 +1- 0.004 0.012 23-JUL-08 30-JUL-08 300 0.033 +1- 0.004 0.016 30-JUL-08 06-AUG-08 302 0.035 +1- 0.004 0.010 06-AUG-08 13-AUG-08 305 0.038 +1- 0.004 0.013 13-AUG-08 20-AUG-08 297 0.034 +1- 0.004 0.016 20-AUG-08 27-AUG-08 300 0.028 +1- 0.003 0.055 27-AUG-08 04-SEP-08 367 0.033 +1- 0.003 0.015 04-SEP-08 10-SEP-08 253 0.035 +1- 0.004 0.015 10-SEP-08 17-SEP-08 301 0.023 +1- 0.003 0.011 17-SEP-08 24-SEP-08 312 0.042 +1- 0.004 0.014 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 11

Air Particulate and Charcoal Filters Location: 049 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCilm3 ) (pCi/m 3 )

24-SEP-08 01-OCT-08 310 0.044 +1- 0.004 0.012 01-OCT-08 08-OCT-08 302 0.034 +1- 0.004 0.018 08-OCT-08 15-OCT-08 310 0.026 +1- 0.003 0.013 15-OCT-08 23-OCT-08 346 0.036 +1- 0.003 0.016 23-OCT-08 29-OCT-08 261 0.026 +1- 0.004 0.018 29-OCT-08 05-NOV-08 315 0.054 +1- 0.004 0.013 05-NOV-08 13-NOV-08 352 0.020 +1- 0.003 0.017 13-NOV-08 19-NOV-08 269 0.032 +1- 0.004 0.011 19-NOV-08 26-NOV-08 314 0.035 +1- 0.004 0.020 26-NOV-08 03-DEC-08 304 0.037 +1- 0.004 0.015 03-DEC-08 11-DEC-08 350 0.039 +1- 0.004 0.019 11-DEC-08 17-DEC-08 268 0.036 +1- 0.004 0.019 17-DEC-08 26-DEC-08 377 0.046 +1- 0.004 0.017 26-DEC-08 31-DEC-08 225 0.038 +1- 0.005 0.033 31-DEC-08 07-JAN-09 301 0.041 +1- 0.004 0.010 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 12

Air Particulate and Charcoal Filters Location: 053 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCilm3 )

04-SEP-08 10-SEP-08 251 0.034 +1- 0.004 0.011 10-SEP-08 17-SEP-08 305 0.024 +1- 0.003 0.019 17-SEP-08 24-SEP-08 298 0.040 +1- 0.004 0.018 24-SEP-08 01-OCT-08 301 0.046 +1- 0.004 0.016 01-OCT-08 08-OCT-08 299 0.033 +1- 0.004 0.015 01-OCT-08 08-OCT-08 299 0.035 +1- 0.004 Duplicate 08-OCT-08 15-OCT-08 306 0.028 +1- 0.003 0.014 15-OCT-08 23-OCT-08 343 0.035 +1- 0.003 0.017 23-OCT-08 29-OCT-08 258 0.024 +1- 0.004 0.027 29-OCT-08 05-NOV-08 305 0.052 +1- 0.004 0.020 05-NOV-08 13-NOV-08 346 0.023 +1- 0.003 0.018 13-NOV-08 19-NOV-08 269 0.031 +1- 0.004 0.019 19-NOV-08 26-NOV-08 306 0.035 +1- 0.004 0.020 26-NOV-08 03-DEC-08 303 0.038 +1- 0.004 0.015 03-DEC-08 11-DEC-08 349 0.030 +1- 0.003 0.015 11-DEC-08 17-DEC-08 267 0.036 +1- 0.004 0.018 17-DEC-08 26-DEC-08 380 0.051 +1- 0.004 0.014 26-DEC-08 31-DEC-08 45 0.075 +1- 0.018 0.164 31-DEC-08 07-JAN-09 293 0.038 +1- 0.004 0.010 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 13

Quarterly Air Particulate - Gamma Location: 002 02-APR-08 Nuclide Concentration (pCi/m 3 )

BE-7 .079+/- 0.012 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 02-JUL-08 3 Nuclide Concentration (pCi/m )

BE-7 .15+/- 0.019 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 CS-134- < 0.001 CS-137 < 0.001 01 -OCT-08 3 Nuclide Concentration (pCi/m )

BE-7 .082+/- 0.013 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 14

Quarterly Air Particulate - Gamma Location: 002 31-DEC-08 Nuclide Concentration (pCi/m 3 )

BE-7 .062+/- 0.014 BE-7 .07+/- 0.014 MN-54 < 0.001 MN-54 < 0.001 CO-58 < 0.001 CO-58 < 0.001 FE-59 < 0.002 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-1 34 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 CS-1 37 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 15

Quarterly Air Particulate - Gamma Location: 018 02-APR-08 Nuclide Concentration (pCi/m 3 )

BE-7 .078+/- 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 02-JUL-08 3 Nuclide Concentration (pCiIm )

BE-7 .099+/- 0.011 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 01-OCT-08 3 Nuclide Concentration (DCi/m )

BE-7 .099+/- 0.017 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 CS-1 34 *< 0.001 CS-1 37 < 0.001 31-DEC-08 3 Nuclide Concentration (pCiIm )

BE-7 .076+/- 0.012 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 16

Quarterly Air Particulate - Gamma Location: 032 02-APR-08 Nuclide Concentration (pCilm 3 )

BE-7 .087+/- 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 02-JUL-08 3 Nuclide Concentration (pCi/m )

BE-7 .102+/- 0.017 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 01-OCT-08 3 Nuclide Concentration (pCi/lm )

BE-7 .102+/- 0.018 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-137 < 0.001 31 -DEC-08 Nuclide Concentration (pCi/m 3 )

BE-7 .074+/- 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-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 17

Quarterly Air Particulate - Gamma Location: 037 02-APR-08 Nuclide Concentration (pCi/m 3 )

BE-7 .092+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 02-JUL-08 3 Nuclide Concentration (pCi/m )

BE-7 .115+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 01 -OCT-08 3

,Nuclide Concentration (pCi/m )

BE-7 .106+/- 0.018 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-137 < 0.001 31 -DEC-08 3 Nuclide Concentration (pCi/m )

BE-7 .069+/- 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-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 18

Quarterly Air Particulate - Gamma Location: 048 02-APR-08 Nuclide Concentration (pCi/m 3 )

BE-7 .069+/- 0.012 BE-7 .085+/- 0.015 MN-54 < 0.001 MN-54 < 0.001 CO-58 < 0.001 CO-58 < 0.001 FE-59 < 0.001 FE-59 < 0.001 CO-60 < 0.001 CO-60 < 0.001 ZN-65 < 0.002 ZN-65 < 0.002 ZR-NB-95 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-134 < 0.001 CS-137 < 0.001 CS-1 37 < 0.001 02-JUL-08

'Nuclide Concentration (pCilm 3 )

BE-7 .111+/- 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-137 < 0.001 01-OCT-08 Nuclide Concentration (pCilm 3 )

BE-7 .08+/- 0.018 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 19

Quarterly Air Particulate - Gamma Location: 048 26-DEC-08 Nuclide Concentration (pCi/m 3 )

BE-7 .056+/- 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-137 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 20

Quarterly Air Particulate - Gamma Location: 049 02-APR-08 Nuclide Concentration (pCi/m 3 )

BE-7 .084+/- 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 02-JUL-08 3 Nuclide Concentration (pCilm )

BE-7 .103+/- 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

,01-OCT-08 3

Nuclide Concentration (pCi/m )

BE-7 .087+/- 0.018 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 31-DEC-08 3 Nuclide Concentration (pCi/m )

BE-7 .07+/- 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-137 < 0.001

• Duplicate Analysis 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 21

Quarterly Air Particulate - Gamma Location: 053 01 -OCT-08 Nuclide Concentration (pCi/m 3 )

BE-7 .115+/- 0.037 MN-54 < 0.004 CO-58 < 0.003 FE-59

• 0.006 CO-60 < 0.003 ZN-65 < 0.006 ZR-NB-95 < 0.002 CS-1 34 < 0.003 CS-137 < 0.002 31-DEC-08 3 Nuclide Concentration (pCi/rm )

BE-7 .075+/- 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

• Duplicate Analysis 2008 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 (pCi/Liter) Analysis 24-JAN-08 MN-54 4.200 24-JAN-08 CO-58 5.400 24-JAN-08 FE-59 4.600 24-JAN-08 CO-60 4.100 24-JAN-08 ZN-65 6.400 24-JAN-08 ZR-NB-95 4.200 24-JAN-08 1-131 5.800 24-JAN-08 CS-134 4.300 24-JAN-08 CS-1 37 4.200 24-JAN-08 BA-LA- 140 2.600 24-JAN-08 H-3 183.000 14-FEB-08 MN-54 3.500 14-FEB-08 CO-58 6.300 14-FEB-08 FE-59 10.200 14-FEB-08 CO-60 4.800 14-FEB-08 ZN-65 4.100 14-FEB-08 ZR-NB-95 3.100 14-FEB-08 1-131 6.900 14-FEB-08 CS-134 3.500 14-FEB-08 CS-137 5.200 14-FEB-08 BA-LA-1 40 3.100 14-FEB-08 H-3 175.000 13-MAR-08 MN-54 1.900 13-MAR-08 CO-58 1.600 13-MAR-08 FE-59 5.200 13-MAR-08 CO-60 1.800 13-MAR-08 ZN-65 4.500 13-MAR-08 ZR-NB-95 3.300 13-MAR-08 1-131 5.400 13-MAR-08 CS-1 34 3.000 13-MAR-08 CS-137 2.700 13-MAR-08 BA-LA-140 1.800 13-MAR-08 H-3 150.000 10-APR-08 MN-54 4.100 10-APR-08 CO-58 3.100 10-APR-08 FE-59 6.700 10-APR-08 CO-60 2.000 10-APR-08 ZN-65 8.800 10-APR-08 ZR-NB-95 3.600 10-APR-08 1-131 11.200 2008 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 10-APR-08 CS-134 4.200 10-APR-08 CS-1 37 3.300 10-APR-08 BA-LA- 140 7.900 10-APR-08 H-3 150.000 08-MAY-08 MN-54 2.800 08-MAY-08 CO-58 2.600 08-MAY-08 FE-59 5.800 08-MAY-08 CO-60 2.200 08-MAY-08 ZN-65 3.800 08-MAY-08 ZR-NB-95 3.500 08-MAY-08 1-131 6.200 08-MAY-08 CS-1 34 2.700 08-MAY-08 CS-1 37 3.200 08-MAY-08 BA-LA- 140 2.700 08-MAY-08 H-3 143.000 12-JUN-08 MN-54 3.600 12-JUN-08 CO-58 3.300 12-JUN-08 FE-59 4.000 12-JUN-08 CO-60 3.800 12-JUN-08 ZN-65 7.300 12-JUN-08 ZR-NB-95 5.400 12-JUN-08 1-131 8.400 12-JUN-08 CS-134 4.500 12-JUN-08 CS-137 5.100 12-JUN-08 BA-LA-140 6.300 12-JUN-08 H-3 168.000 17-JUL-08 MN-54 2.300 Duplicate 17-JUL-08 MN-54 2.500 17-JUL-08 CO-58 1.900 Duplicate 17-JUL-08 CO-58 2.500 17-JUL-08 FE-59 2.600 Duplicate 17-JUL-08 FE-59 5.800 17-JUL-08 CO-60 2.000 Duplicate 17-JUL-08 CO-60 3.400 17-JUL-08 ZN-65 6.100 Duplicate 17-JUL-08 ZN-65 3.400 17-JUL-08 ZR-NB-95 2.300 Duplicate 17-JUL-08 ZR-NB-95 3.000 17-JUL-08 1-131 3.600 Duplicate 17-JUL-08 1-131 5.900 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 24

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 17-JUL-08 CS-1 34 2.300 Duplicate 17-JUL-08 CS-134 3.500 17-JUL-08 CS-1 37 1.200 Duplicate 17-JUL-08 CS-1 37 3.300 17-JUL-08 BA-LA- 140 2.400 Duplicate 17-JUL-08 BA-LA-140 3.800 17-JUL-08 H-3 143.000 Duplicate 17-JUL-08 H-3 143.000 14-AUG-08 MN-54 2.700 Duplicate 14-AUG-08 MN-54 3.200 14-AUG-08 CO-58 1.900 Duplicate 14-AUG-08 CO-58 3.600 14-AUG-08 FE-59 4.500 Duplicate 14-AUG-08 FE-59 5.200 14-AUG-08 CO-60 2.300 Duplicate 14-AUG-08 CO-60 2.800 14-AUG-08 ZN-65 3.100 Duplicate 14-AUG-08 ZN-65 4.900 14-AUG-08 ZR-NB-95 2.800 Duplicate 14-AUG-08 ZR-NB-95 2.900 14-AUG-08 1-131 4.100 Duplicate 14-AUG-08 1-131 6.300 14-AUG-08 CS-134 2.400 Duplicate 14-AUG-08 CS-134 2.100 14-AUG-08 CS-1 37 2.300 Duplicate 14-AUG-08 CS-137 3.000 14-AUG-08 BA-LA-140 3.800 Duplicate 14-AUG-08 BA-LA-1 40 3.300 14-AUG-08 H-3 147.000 Duplicate 14-AUG-08 H-3 147.000 11-SEP-08 MN-54 3.000 11-SEP-08 CO-58 4.300 11-SEP-08 FE-59 6.700 11-SEP-08 CO-60 4.100 11 -SEP-08 ZN-65 4.000 11-SEP-08 ZR-NB-95 2.700 11-SEP-08 1-131 8.800 11-SEP-08 CS-134 4.100 11-SEP-08 CS-137 4.400 11-SEP-08 BA-LA- 140 2.900 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 25

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 11 -SEP-08 H-3 155.000 16-OCT-08 MN-54 3.700 Duplicate 16-OCT-08 MN-54 2.300 16-OCT-08 CO-58 3.400 Duplicate 16-OCT-08 CO-58 2.500 16-OCT-08 FE-59 7.700 Duplicate 16-OCT-08 FE-59 6.600 16-OCT-08 CO-60 3.000 Duplicate 16-OCT-08 CO-60 2.600 16-OCT-08 ZN-65 3.500 Duplicate 16-OCT-08 ZN-65 5.200 16-OCT-08 ZR-NB-95 2.200 Duplicate 16-OCT-08 ZR-NB-95 3.600 16-OCT-08 1-131 7.600 Duplicate 16-OCT-08 1-131 4.200 16-OCT-08 CS-1 34 3.700 Duplicate 16-OCT-08 CS-134 2.500 16-OCT-08 CS-137 2.900 Duplicate 16-OCT-08 CS-1 37 3.200 16-OCT-08 BA-LA-140 1.900 Duplicate 16-OCT-08 BA-LA-140 2.000 16-OCT-08 H-3 150.000 Duplicate 16-OCT-08 H-3 150.000 13-NOV-08 MN-54 3.200 13-NOV-08 CO-58 3.000 13-NOV-08 FE-59 5.600 13-NOV-08 CO-60 4.700 13-NOV-08 ZN-65 8.300 13-NOV-08 ZR-NB-95 4.700 13-NOV-08 1-131 7.700 13-NOV-08 CS-1 34 3.200 13-NOV-08 CS-1 37 4.300 13-NOV-08 BA-LA-140 4.400 13-NOV-08 H-3 144.000 11-DEC-08 MN-54 2.800 11-DEC-08 CO-58 3.100 11-DEC-08 FE-59 4.800 11-DEC-08 CO-60 2.400 11-DEC-08 ZN-65 6.800 11-DEC-08 ZR-NB-95 2.400 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 26

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 11-DEC-08 1-131 < 5.700 11-DEC-08 CS-1 34 < 3.900 11-DEC-08 CS-137 < 3.500 11-DEC-08 BA-LA-1 40 < 2.200 11-DEC-08 H-3 < 144.000 2008 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 24-JAN-08 MN-54 < 4.400 24-JAN-08 CO-58 < 3.000 24-JAN-08 FE-59 < 8.000 24-JAN-08 CO-60 < 4.200 24-JAN-08 ZN-65 < 4.000 24-JAN-08 ZR-NB-95 < 2.100 24-JAN-08 1-131 < 6.100 24-JAN-08 CS-1 34 < 3.900 24-JAN-08 CS-137 < 5.000 24-JAN-08 BA-LA-140 < 5.300 24-JAN-08 H-3 13150.000 +/-322.000 14-FEB-08 MN-54 < 4.600 14-FEB-08 CO-58 < 3.700 14-FEB-08 FE-59 < 6.100 14-FEB-08 CO-60 < 2.600 14-FEB-08 ZN-65 < 11.100 14-FEB-08 ZR-NB-95 < 5.600 14-FEB-08 1-131 < 6.300 14-FEB-08 CS-134 < 4.000 14-FEB-08 CS-1 37 < 2.000 14-FEB-08 BA-LA-140 < 3.600 14-FEB-08 H-3 15848.000 +/-367.000 13-MAR-08 MN-54 < 2.900 13-MAR-08 CO-58 < 3.800 13-MAR-08 FE-59 < 5.000 13-MAR-08 CO-60 < 3.300 13-MAR-08 ZN-65 < 4.000 13-MAR-08 ZR-NB-95 < 4.200 13-MAR-08 1-131 < 9.300 13-MAR-08 CS-134 < 4.600 13-MAR-08 CS-1 37 < 4.300 13-MAR-08 BA-LA-140 < 7.300 13-MAR-08 H-3 16130.000 +/-360.000 10-APR-08 MN-54 < 2.600 10-APR-08 CO-58 < 2.400 10-APR-08 FE-59 < 6.500 10-APR-08 CO-60 < 3.300 10-APR-08 ZN-65 < 3.300 10-APR-08 ZR-NB-95 < 4.700 10-APR-08 1-131 < 7.100 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 28

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 10-APR-08 CS-1 34 < 5.000 10-APR-08 CS-1 37 < 4.200 10-APR-08 BA-LA-140 < 7.600 10-APR-08 H-3 16607.000 +/-365.000 08-MAY-08 MN-54 < 4.200 08-MAY-08 CO-58 < 3.200 08-MAY-08 FE-59 < 10.800 08-MAY-08 CO-60 < 2.000 08-MAY-08 ZN-65 < 4.400 08-MAY-08 ZR-NB-95 < 4.000 08-MAY-08 1-131 < 9.200 08-MAY-08 CS-134 < 4.100 08-MAY-08 CS-137 < 2.700 08-MAY-08 BA-LA-140 < 6.600 08-MAY-08 H-3 15579.000 +/-351.000 12-JUN-08 MN-54 < 4.200 12-JUN-08 CO-58 < 4.000 12-JUN-08 FE-59 < 4.000 12-JUN-08 CO-60 < 2.600 12-JUN-08 ZN-65 < 6.000 12-JUN-08 ZR-NB-95 < 5.000 12-JUN-08 1-131 < 9.800 12-JUN-08 CS-134 < 5.400 12-JUN-08 CS-1 37 < 5.000 12-JUN-08 BA-LA-140 < 5.500 12-JUN-08 H-3 13872.000 +/-343.000 17-JUL-08 MN-54 < 1.800 17-JUL-08 CO-58 < 2.900 17-JUL-08 FE-59 < 4.200 17-JUL-08 CO-60 < 2.600 17-JUL-08 ZN-65 < 5.000 17-JUL-08 ZR-NB-95 < 5.100 17-JUL-08 1-131 < 4.500 17-JUL-08 CS-134 < 2.200 17-JUL-08 CS-1 37 < 2.900 17-JUL-08 BA-LA-140 < 2.400 17-JUL-08 H-3 12782.000 +/-319.000 14-AUG-08 MN-54 < 1.700 14-AUG-08 CO-58 < 2.400 14-AUG-08 FE-59 < 3.600 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 29

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 14-AUG-08 CO-60 < 2.200 14-AUG-08 ZN-65 < 4.800 14-AUG-08 ZR-NB-95 < 3.500 14-AUG-08 1-131 < 3.600 14-AUG-08 CS-1 34 < 2.100 14-AUG-08 CS-137 < 2.500 14-AUG-08 BA-LA-140 < 2.300 14-AUG-08 H-3 11322.000 +/- 298.000 11-SEP-08 MN-54 < 5.600 11-SEP-08 CO-58 < 4.800 11-SEP-08 FE-59 < 14.100 11-SEP-08 CO-60 < 4.300 11-SEP-08 ZN-65 < 6.100 11-SEP-08 ZR-NB-95 < 4.600 11-SEP-08 1-131 < 10.900 11-SEP-08 CS-134 < 4.700 11-SEP-08 CS-137 < 4.900 11-SEP-08 BA-LA-140 < 3.100 11-SEP-08 H-3 11069.000 +/- 316.000 16-OCT-08 MN-54 < 2.600 16-OCT-08 CO-58 < 2.600 16-OCT-08 FE-59 < 3.700 16-OCT-08 CO-60 < 2.400 16-OCT-08 ZN-65 < 4.300 16-OCT-08 ZR-NB-95 < 3.400 16-OCT-08 1-131 < 3.800 16-OCT-08 CS-1 34 < 2.400 16-OCT-08 CS-137 < 1.700 16-OCT-08 BA-LA-140 < 2.100 16-OCT-08 H-3 10518.000 +/- 295.000 13-NOV-08 MN-54 < 3.200 13-NOV-08 CO-58 < 2.500 13-NOV-08 FE-59 < 4.000 13-NOV-08 CO-60 < 3.700 13-NOV-08 ZN-65 < 5.400 13-NOV-08 ZR-NB-95 < 2.700 13-NOV-08 1-131 < 5.000 13-NOV-08 CS-134 < 3.400 13-NOV-08 CS-137 < 3.600 13-NOV-08 BA-LA-140 < 2.300 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 30

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 13-NOV-08 H-3 10079.000 +/-292.000 11-DEC-08 MN-54 < 3.500 11-DEC-08 CO-58 < 3.700 11-DEC-08 FE-59 < 6.100 11-DEC-08 CO-60 < 5.200 11-DEC-08 ZN-65 < 3.700 11-DEC-08 ZR-NB-95 < 5.000 11-DEC-08 1-131 < 6.700 11-DEC-08 CS-1 34 < 3.400 11-DEC-08 CS-137 < 5.700 11-DEC-08 BA-LA- 140 < 3.700 11-DEC-08 H-3 10694.000 +/-303.000 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 31

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-FEB-08 MN-54 1.700 14-FEB-08 CO-58 1.500 14-FEB-08 FE-59 4.000 14-FEB-08 CO-60 3.000 14-FEB-08 ZN-65 4.100 14-FEB-08 ZR-NB-95 2.600 14-FEB-08 CS-134 3.100 14-FEB-08 CS-137 1.900 14-FEB-08 BA-LA-140 2.700 14-FEB-08 H-3 175.000 14-FEB-08 1-131 (CHEM) 0.353 30-MAY-08 MN-54 2.800 30-MAY-08 CO-58 2.300 30-MAY-08 FE-59 3.800 30-MAY-08 CO-60 1.100 30-MAY-08 ZN-65 5.500 30-MAY-08 ZR-NB-95 2.700 30-MAY-08 CS-1 34 2.200 30-MAY-08 CS-1 37 2.900 30-MAY-08 BA-LA-140 2.600 30-MAY-08 H-3 166.000 30-MAY-08 1-131 (CHEM) 0.437 22-AUG-08 MN-54 2.600 22-AUG-08 CO-58 1.800 22-AUG-08 FE-59 5.500 22-AUG-08 CO-60 2.100 22-AUG-08 ZN-65 4.300 22-AUG-08 ZR-NB-95 2.500 22-AUG-08 CS-134 2.600 22-AUG-08 CS-1 37 2.300 22-AUG-08 BA-LA- 140 2.500 22-AUG-08 H-3 151.000 22-AUG-08 1-131 (CHEM) 0.317 21-NOV-08 MN-54 2.000 21-NOV-08 CO-58 2.600 21-NOV-08 FE-59 4.900 21-NOV-08 CO-60 2.600 21-NOV-08 ZN-65 3.900 21 -NOV-08 ZR-NB-95 2.000 21-NOV-08 CS-134 2.200 21-NOV-08 CS-137 2.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 32

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 21-NOV-08 BA-LA-140 < 2.400 21-NOV-08 H-3 < 148.000 21 -NOV-08 1-131 (CHEM) < 0.236 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 33

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-FEB-08 MN-54 2.500 14-FEB-08 CO-58 4.500 14-FEB-08 FE-59 6.400 14-FEB-08 CO-60 6.100 14-FEB-08 ZN-65 6.400 14-FEB-08 ZR-NB-95 6.300 14-FEB-08 CS-1 34 5.800 14-FEB-08 CS-1 37 6.400 14-FEB-08 BA-LA-140 6.800 14-FEB-08 H-3 175.000 14-FEB-08 1-131 (CHEM) 0.374 30-MAY-08 MN-54 2.500 30-MAY-08 CO-58 2.300 30-MAY-08 FE-59 5.700 30-MAY-08 CO-60 3.400 30-MAY-08 ZN-65 6.100 30-MAY-08 ZR-NB-95 2.800 30-MAY-08 CS-1 34 3.000 30-MAY-08 CS-1 37 1.900 30-MAY-08 BA-LA-140 2.900 30-MAY-08 H-3 166.000 30-MAY-08 1-131 (CHEM) 0.436 22-AUG-08 MN-54 4.000 22-AUG-08 CO-58 4.600 22-AUG-08 FE-59 5.900 22-AUG-08 CO-60 2.800 22-AUG-08 ZN-65 9.000 22-AUG-08 ZR-NB-95 3.500 22-AUG-08 CS-1 34 3.900 22-AUG-08 CS-137 5.500 22-AUG-08 BA-LA- 140 5.700 22-AUG-08 H-3 151.000 22-AUG-08 1-131 (CHEM) 0.309 21-NOV-08 MN-54 2.000 21-NOV-08 CO-58 2.100 21-NOV-08 FE-59 3.000 21-NOV-08 CO-60 1.500 21 -NOV-08 ZN-65 2.300 21-NOV-08 ZR-NB-95 3.100 21-NOV-08 CS-1 34 2.700 21-NOV-08 CS-137 2.600 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 34

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 21-NOV-08 BA-LA-140 < 2.800 21-NOV-08 H-3 < 148.000 21-NOV-08 1-131 (CHEM) < 0.343 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 35

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-FEB-08 MN-54 2.900 14-FEB-08 CO-58 2.600 14-FEB-08 FE-59 3.100 14-FEB-08 CO-60 2.600 14-FEB-08 ZN-65 3.300 14-FEB-08 ZR-NB-95 3.400 14-FEB-08 CS-1 34 3.500 14-FEB-08 CS-1 37 2.900 14-FEB-08 BA-LA-140 2.800 14-FEB-08 H-3 151.000 14-FEB-08 1-131 (CHEM) 0.406 30-MAY-08 MN-54 2.100 30-MAY-08 CO-58 2.900 30-MAY-08 FE-59 5.900 30-MAY-08 CO-60 2.800 30-MAY-08 ZN-65 2.200 30-MAY-08 ZR-NB-95 3.400 30-MAY-08 CS-134 4.100 30-MAY-08 CS-1 37 3.200 30-MAY-08 BA-LA-140 2.300 30-MAY-08 H-3 164.000 30-MAY-08 1-131 (CHEM) 0.468 22-AUG-08 MN-54 1.200 22-AUG-08 CO-58 1.800 22-AUG-08 FE-59 7.000 22-AUG-08 CO-60 3.600 22-AUG-08 ZN-65 3.500 22-AUG-08 ZR-NB-95 2.500 22-AUG-08 CS-1 34 2.800 22-AUG-08 CS-137 2.700 22-AUG-08 BA-LA- 140 4.800 22-AUG-08 H-3 151.000 22-AUG-08 1-131 (CHEM) 0.272 21-NOV-08 MN-54 2.100 21-NOV-08 CO-58 2.200 21-NOV-08 FE-59 3.800 21-NOV-08 CO-60 1.700 21-NOV-08 ZN-65 4.200 21-NOV-08 ZR-NB-95 2.500 21-NOV-08 CS-134 3.200 21-NOV-08 CS-1 37 2.300 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 36

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 21-NOV-08 BA-LA- 140 < 2.200 21-NOV-08 H-3 < 148.000 21-NOV-08 1-131 (CHEM) < 0.253 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 37

Exposure Pathway - Waterborne Ground Water Location F-I Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-FEB-08 MN-54 2.200 14-FEB-08 CO-58 1.000 14-FEB-08 FE-59 6.300 14-FEB-08 CO-60 2.500 14-FEB-08 ZN-65 4.200 14-FEB-08 ZR-NB-95 2.100 14-FEB-08 CS-1 34 2.300 14-FEB-08 CS-137 1.900 14-FEB-08 BA-LA-1 40 2.800 14-FEB-08 H-3 175.000 14-FEB-08 1-131 (CHEM) 0.359 30-MAY-08 MN-54 1.800 30-MAY-08 CO-58 2.800 30-MAY-08 FE-59 4.000 30-MAY-08 CO-60 1.000 30-MAY-08 ZN-65 3.900 30-MAY-08 ZR-NB-95 2.800 30-MAY-08 CS-134 3.100 30-MAY-08 CS-1 37 3.200 30-MAY-08 BA-LA-1 40 2.700 30-MAY-08 H-3 166.000 30-MAY-08 1-131 (CHEM) 0.429 22-AUG-08 MN-54 1.600 22-AUG-08 CO-58 2.700 22-AUG-08 FE-59 4.000 22-AUG-08 CO-60 2.400 22-AUG-08 ZN-65 3.000 22-AUG-08 ZR-NB-95 3.200 22-AUG-08 CS-134 2.800 22-AUG-08 CS-1 37 2.300 22-AUG-08 BA-LA-1 40 3.900 22-AUG-08 H-3 151.000 22-AUG-08 1-131 (CHEM) 0.491 21-NOV-08 MN-54 1.800 21-NOV-08 CO-58 2.200 21-NOV-08 FE-59 3.000 21-NOV-08 CO-60 1.600 21-NOV-08 ZN-65 5.600 21-NOV-08 ZR-NB-95 2.600 21-NOV-08 CS-134 2.400 21-NOV-08 CS-1 37 3.100 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 38

Exposure Pathway - Waterborne Ground Water Location F-1 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 21-NOV-08 BA-LA-140 < 3.000 21-NOV-08 H-3 < 148.000 21-NOV-08 1-131 (CHEM) < 0.336 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 39

Exposure Pathway - Waterborne Ground Water Location G-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-FEB-08 MN-54 3.900 14-FEB-08 CO-58 3.800 14-FEB-08 FE-59 6.000 14-FEB-08 CO-60 3.000 14-FEB-08 ZN-65 9.600 14-FEB-08 ZR-NB-95 5.000 14-FEB-08 CS-1 34 4.400 14-FEB-08 CS-137 3.800 14-FEB-08 BA-LA-140 3.000 14-FEB-08 H-3 151.000 14-FEB-08 1-131 (CHEM) 0.278 30-MAY-08 MN-54 3.400 30-MAY-08 CO-58 1.600 30-MAY-08 FE-59 7.100 30-MAY-08 CO-60 2.900 30-MAY-08 ZN-65 6.500 30-MAY-08 ZR-NB-95 3.300 30-MAY-08 CS-134 3.500 30-MAY-08 CS-1 37 2.900 30-MAY-08 BA-LA-140 3.700 30-MAY-08 H-3 166.000 30-MAY-08 1-131 (CHEM) 0.353 22-AUG-08 MN-54 2.500 22-AUG-08 CO-58 1.600 22-AUG-08 FE-59 2.600 22-AUG-08 CO-60 2.600 22-AUG-08 ZN-65 4.900 22-AUG-08 ZR-NB-95 4.100 22-AUG-08 CS-134 2.900 22-AUG-08 CS-1 37 3.500 22-AUG-08 BA-LA-140 3.500 22-AUG-08 H-3 151.000 22-AUG-08 1-131 (CHEM) 0.444 21-NOV-08 MN-54 2.800 21-NOV-08 CO-58 3.500 21-NOV-08 FE-59 6.200 21-NOV-08 CO-60 3.000 21-NOV-08 ZN-65 5.600 21-NOV-08 ZR-NB-95 3.200 21-NOV-08 CS-134 3.100 21-NOV-08 CS-137 2.500 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 40

Exposure Pathway - Waterborne Ground Water Location G-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 21 -NOV-08 BA-LA-140 < 3.400 21-NOV-08 H-3 < 148.000 21-NOV-08 1-131 (CHEM) < 0.439 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 41

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 14-FEB-08 MN-54 4.100 14-FEB-08 CO-58 3.900 14-FEB-08 FE-59 8.700 14-FEB-08 CO-60 3.200 14-FEB-08 ZN-65 5.500 14-FEB-08 ZR-NB-95 8.800 14-FEB-08 CS-134 7.100 14-FEB-08 CS-1 37 7.100 14-FEB-08 BA-LA-140 4.900 14-FEB-08 H-3 175.000 14-FEB-08 1-131 (CHEM) 0.343 29-MAY-08 MN-54 3.300 29-MAY-08 CO-58 2.500 29-MAY-08 FE-59 3.000 29-MAY-08 CO-60 1.900 29-MAY-08 ZN-65 4.600 29-MAY-08 ZR-NB-95 2.300 29-MAY-08 CS-134 2.800 29-MAY-08 CS-137 3.600 29-MAY-08 BA-LA-140 2.700 29-MAY-08 H-3 166.000 29-MAY-08 1-131 (CHEM) 0.303 22-AUG-08 MN-54 4.800 22-AUG-08 CO-58 3.200 22-AUG-08 FE-59 5.100 22-AUG-08 CO-60 3.400 22-AUG-08 ZN-65 5.700 22-AUG-08 ZR-NB-95 5.500 22-AUG-08 CS-134 4.700 22-AUG-08 CS-1 37 4.800 22-AUG-08 BA-LA-140 3.600 22-AUG-08 H-3 151.000 22-AUG-08 1-131 (CHEM) 0.252 19-NOV-08 MN-54 1.900 19-NOV-08 CO-58 2.800 19-NOV-08 FE-59 4.700 19-NOV-08 CO-60 2.400 19-NOV-08 ZN-65 5.700 19-NOV-08 ZR-NB-95 3.600 19-NOV-08 CS-134 3.000 19-NOV-08 CS-1 37 2.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 42

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 19-NOV-08 BA-LA- 140 < 1.600 19-NOV-08 H-3 < 148.000 19-NOV-08 1-131 (CHEM) < 0.286 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 43

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-FEB-08 MN-54 3.500 14-FEB-08 CO-58 2.300 14-FEB-08 FE-59 4.500 14-FEB-08 CO-60 3.700 14-FEB-08 ZN-65 5.000 14-FEB-08 ZR-NB-95' 5.400 14-FEB-08 CS-1 34 3.800 14-FEB-08 CS-1 37 4.700 14-FEB-08 BA-LA-140 4.400 14-FEB-08 H-3 151.000 14-FEB-08 1-131 (CHEM) 0.222 30-MAY-08 MN-54 4.000 30-MAY-08 CO-58 3.900 30-MAY-08 FE-59 4.700 30-MAY-08 CO-60 3.500 30-MAY-08 ZN-65 6.000 30-MAY-08 ZR-NB-95 4.500 30-MAY-08 CS-134 2.800 30-MAY-08 CS-137 2.800 30-MAY-08 BA-LA-140 3.400 30-MAY-08 H-3 166.000 30-MAY-08 1-131 (CHEM) 0.328 22-AUG-08 MN-54 4.100 22-AUG-08 CO-58 2.300 22-AUG-08 FE-59 7.600 22-AUG-08 CO-60 2.800 22-AUG-08 ZN-65 6.000 22-AUG-08 ZR-NB-95 4.300 22-AUG-08 CS-1 34 3.900 22-AUG-08 CS-137 5.300 22-AUG-08 BA-LA- 140 3.900 22-AUG-08 H-3 151.000 22-AUG-08 1-131 (CHEM) 0.446 21-NOV-08 MN-54 2.000 Duplicate 21-NOV-08 MN-54 2.800 21-NOV-08 CO-58 3.200 Duplicate 21-NOV-08 CO-58 2.900 21-NOV-08 FE-59 4.000 Duplicate 21-NOV-08 FE-59 5.100 21-NOV-08 CO-60 3.800 Duplicate 21-NOV-08 CO-60 4.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 44

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 21-NOV-08 ZN-65 7.100 Duplicate 21-NOV-08 ZN-65 8.000 21-NOV-08 ZR-NB-95 2.700 Duplicate 21-NOV-08 ZR-NB-95 3.000 21-NOV-08 CS-134 3.200 Duplicate 21-NOV-08 CS-134 4.200 21-NOV-08 CS-1 37 4.000 Duplicate 21-NOV-08 CS-1 37 3.900 21-NOV-08 BA-LA-1 40 4.100 Duplicate 21-NOV-08 BA-LA-140 2.800 21-NOV-08 H-3 148.000 Duplicate 21-NOV-08 H-3 148.000 21-NOV-08 1-131 (CHEM) 0.341 Duplicate 21-NOV-08 1-131 (CHEM) 0.353 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 45

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-FEB-08 MN-54 2.300 14-FEB-08 CO-58 1.900 14-FEB-08 FE-59 5.800 14-FEB-08 CO-60 3.000 14-FEB-08 ZN-65 5.000 14-FEB-08 ZR-NB-95 3.100 14-FEB-08 CS-134 3.700 14-FEB-08 CS-1 37 2.600 14-FEB-08 BA-LA-140 2.300 14-FEB-08 H-3 151.000 14-FEB-08 1-131 (CHEM) 0.320 30-MAY-08 MN-54 3.200 Duplicate 30-MAY-08 MN-54 3.600 30-MAY-08 CO-58 3.000 Duplicate 30-MAY-08 CO-58 3.500 30-MAY-08 FE-59 7.600 Duplicate 30-MAY-08 FE-59 7.000 30-MAY-08 CO-60 2.100 Duplicate 30-MAY-08 CO-60 2.700 30-MAY-08 ZN-65 5.000 Duplicate 30-MAY-08 ZN-65 3.700 30-MAY-08 ZR-NB-95 2.200 Duplicate 30-MAY-08 ZR-NB-95 5.200 30-MAY-08 CS-1 34 3.200 Duplicate 30-MAY-08 CS-134 3.400 30-MAY-08 CS-137 3.300 Duplicate 30-MAY-08 CS-1 37 5.200 30-MAY-08 BA-LA-1 40 2.700 Duplicate 30-MAY-08 BA-LA- 140 3.400 30-MAY-08 H-3 166.000 Duplicate 30-MAY-08 H-3 166.000 30-MAY-08 1-131 (CHEM) 0.284 Duplicate 30-MAY-08 1-131 (CHEM) 0.297 22-AUG-08 MN-54 2.200 Duplicate 22-AUG-08 MN-54 2.800 22-AUG-08 CO-58 1.500 Duplicate 22-AUG-08 CO-58 2.400 22-AUG-08 FE-59 2.800 Duplicate 22-AUG-08 FE-59 3.800 22-AUG-08 CO-60 2.600 Duplicate 22-AUG-08 CO-60 3.400 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 46

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 22-AUG-08 ZN-65 < 4.400 Duplicate 22-AUG-08 ZN-65 < 1.700 22-AUG-08 ZR-NB-95 < 2.700 Duplicate 22-AUG-08 ZR-NB-95 < 2.000 22-AUG-08 CS-134 < 2.900 Duplicate 22-AUG-08 CS-1 34 < 2.900 22-AUG-08 CS-1 37 < 2.400 Duplicate 22-AUG-08 CS-137 < 3.200 22-AUG-08 BA-LA- 140 < 2.900 Duplicate 22-AUG-08 BA-LA-140 < 4.200 22-AUG-08 H-3 < 151.000 Duplicate 22-AUG-08 H-3 < 151.000 22-AUG-08 1-131 (CHEM) < 0.365 Duplicate 22-AUG-08 1-131 (CHEM) < 0.435 21-NOV-08 MN-54 < 2.600 21-NOV-08 CO-58 < 4.000 21-NOV-08 FE-59 < 6.400 21-NOV-08 CO-60 < 3.500 21-NOV-08 ZN-65 < 6.700 21-NOV-08 ZR-NB-95 < 3.800 21-NOV-08 CS-134 < 4.100 21-NOV-08 CS-137 < 5.000 21-NOV-08 BA-LA-140 < 5.600 21-NOV-08 H-3 < 148.000 21-NOV-08 1-131 (CHEM) < 0.401 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 47

Exposure Pathway - Waterborne Drinking Water Location BW-1 5 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 07-FEB-08 MN-54 < 2.000 07-FEB-08 CO-58 < 1.400 07-FEB-08 FE-59 < 3.600 07-FEB-08 CO-60 < 2.500 07-FEB-08 ZN-65 < 2.500 07-FEB-08 ZR-NB-95 < 3.000 07-FEB-08 CS-1 34 < 2.400 07-FEB-08 CS-137 < 2.400 07-FEB-08 BA-LA- 140 < 3.400 07-FEB-08 GROSS BETA 4.088 +/-1.128 07-FEB-08 1-131 (CHEM) < 0.354 05-MAR-08 MN-54 < 5.500 05-MAR-08 CO-58 < 2.800 05-MAR-08 FE-59 < 8.000 05-MAR-08 CO-60 < 2.700 05-MAR-08 ZN-65 < 3.400 05-MAR-08 ZR-NB-95 < 3.900 05-MAR-08 CS-134 < 2.900 05-MAR-08 CS-137 < 6.200 05-MAR-08 BA-LA- 140 < 5.400 05-MAR-08 GROSS BETA 1.904 +/-0.596 05-MAR-08 1-131 (CHEM) < 0.463 01-APR-08 MN-54 < 2.600 01-APR-08 CO-58 < 2.300 01-APR-08 FE-59 < 6.200 01-APR-08 CO-60 < 2.800 01-APR-08 ZN-65 < 5.100 01-APR-08 ZR-NB-95 < 2.300 01-APR-08 CS-134 < 3.300 01-APR-08 CS-137 < 3.400 01-APR-08 BA-LA-140 < 1.600 01-APR-08 GROSS BETA 3.352 +/-1.104 01-APR-08 1-131 (CHEM) < 0.349 07-MAY-08 MN-54 < 2.600 07-MAY-08 CO-58 < 1.600 07-MAY-08 FE-59 < 6.300 07-MAY-08 CO-60 < 2.600 07-MAY-08 ZN-65 < 4.600 07-MAY-08 ZR-NB-95 < 3.300 07-MAY-08 CS-134 < 2.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 48

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 07-MAY-08 CS-137 < 3.300 07-MAY-08 BA-LA-140 < 2.300 07-MAY-08 GROSS BETA 4.358 +/- 1.087 07-MAY-08 1-131 (CHEM) < 0.314 04-JUN-08 MN-54 < 4.300 04-JUN-08 CO-58 < 3.000 04-JUN-08 FE-59 < 9.800 04-JUN-08 CO-60 < 2.200 04-JUN-08 ZN-65 < 6.800 04-JUN-08 ZR-NB-95 < 3.200 04-JUN-08 CS-1 34 < 5.600 04-JUN-08 CS-1 37 < 5.200 04-JUN-08 BA-LA-140 < 5.300 04-JUN-08 GROSS BETA 3.604 +/- 1.020 04-JUN-08 1-131 (CHEM) < 0.438 02-JUL-08 MN-54 < 3.100 02-JUL-08 CO-58 < 3.500 02-JUL-08 FE-59 < 6.100 02-JUL-08 CO-60 < 3.400 02-JUL-08 ZN-65 < 5.900 02-JUL-08 ZR-NB-95 < 3.400 02-JUL-08 CS-134 < 3.500 02-JUL-08 CS-1 37 < 2.000 02-JUL-08 BA-LA- 140 < 4.300 02-JUL-08 GROSS BETA 2.692 +/-0.494 02-JUL-08 1-131 (CHEM) < 0.349 06-AUG-08 MN-54 < 2.800 06-AUG-08 MN-54 < 2.800 Duplicate 06-AUG-08 CO-58 < 2.700 06-AUG-08 CO-58 < 2.400 Duplicate 06-AUG-08 FE-59 < 3.700 06-AUG-08 FE-59 < 3.100 Duplicate 06-AUG-08 CO-60 < 2.100 06-AUG-08 CO-60 < 2.200 Duplicate 06-AUG-08 ZN-65 < 5.900 06-AUG-08 ZN-65 < 3.100 Duplicate 06-AUG-08 ZR-NB-95 < 2.300 06-AUG-08 ZR-NB-95 < 3.000 Duplicate 06-AUG-08 CS-134 < 2.700 06-AUG-08 CS-134 < 2.700 Duplicate 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 49

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 06-AUG-08 CS-137 < 2.400 06-AUG-08 CS-137 < 2.500 Duplicate 06-AUG-08 BA-LA-140 < 2.200 06-AUG-08 BA-LA-1 40 < 1.900 Duplicate 06-AUG-08 GROSS BETA 4.455 +/-1.134 06-AUG-08 GROSS BETA 3.832 +/- 1.030 Duplicate 06-AUG-08 1-131 (CHEM) < 0.292 06-AUG-08 1-131 (CHEM) < 0.308 Duplicate 03-SEP-08 MN-54 < 2.900 03-SEP-08 CO-58 < 3.900 03-SEP-08 FE-59 < 4.000 03-SEP-08 CO-60 < 3.500 03-SEP-08 ZN-65 < 2.400 03-SEP-08 ZR-NB-95 < 3.500 03-SEP-08 CS-134 < 3.500 03-SEP-08 CS-1 37 < 2.200 03-SEP-08 BA-LA-140 < 3.400 03-SEP-08 GROSS BETA 3.399 +/- 1.782 03-SEP-08 1-131 (CHEM) < 0.277 01-OCT-08 MN-54 < 4.300 01-OCT-08 CO-58 < 5.100 01-OCT-08 FE-59 < 4.800 01-OCT-08 CO-60 < 4.500 01-OCT-08 ZN-65 < 4.300 01-OCT-08 ZR-NB-95 < 4.800 01-OCT-08 CS-134 < 4.900 01-OCT-08 CS-137 < 6.000 01-OCT-08 BA-LA-140 < 2.700 01-OCT-08 GROSS BETA 2.683 +/- 0.639 01-OCT-08 1-131 (CHEM) < 0.248 05-NOV-08 MN-54 < 0.600 05-NOV-08 CO-58 < 0.900 05-NOV-08 FE-59 < 1.900 05-NOV-08 CO-60 < 1.300 05-NOV-08 ZN-65 < 1.700 05-NOV-08 ZR-NB-95 < 1.100 05-NOV-08 CS-134 < 0.900 05-NOV-08 CS-137 < 1.000 05-NOV-08 BA-LA-140 < 0.800 05-NOV-08 GROSS BETA 3.328 +/-0.701 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 50

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 05-NOV-08 1-131 (CHEM) < 0.300 03-DEC-08 MN-54 < 4.100 03-DEC-08 CO-58 < 5.000 03-DEC-08 FE-59 < 6.200 03-DEC-08 CO-60 < 5.700 03-DEC-08 ZN-65 < 5.200 03-DEC-08 ZR-NB-95 < 5.300 03-DEC-08 CS-134 < 5.200 03-DEC-08 CS-1 37 < 3.900 03-DEC-08 BA-LA-1 40 < 4.100 03-DEC-08 GROSS BETA 3.365 +/- 1.005 03-DEC-08 1-131 (CHEM) < 0.403 07-JAN-09 MN-54 < 3.000 07-JAN-09 CO-58 < 3.800 07-JAN-09 FE-59 < 8.000 07-JAN-09 CO-60 < 4.800 07-JAN-09 ZN-65 < 4.500 07-JAN-09 ZR-NB-95 < 3.000 07-JAN-09 CS-1 34 < 4.700 07-JAN-09 CS-1 37 < 4.600 07-JAN-09 BA-LA-140 < 1.900 07-JAN-09 GROSS BETA 2.634 +/-1.130 07-JAN-09 1-131 (CHEM) < 0.189 2008 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 07-FEB-08 MN-54 < 2.100 07-FEB-08 CO-58 < 3.200 07-FEB-08 FE-59 < 4.100 07-FEB-08 CO-60 < 2.000 07-FEB-08 ZN-65 < 4.800 07-FEB-08 ZR-NB-95 < 2.900 07-FEB-08 CS-134 < 3.300 07-FEB-08 CS-1 37 < 3.900 07-FEB-08 BA-LA-140 < 3.000 07-FEB-08 GROSS BETA 3.159 +/-1.093 07-FEB-08 1-131 (CHEM) < 0.354 05-MAR-08 MN-54 < 3.900 05-MAR-08 CO-58 < 2.800 05-MAR-08 FE-59 < 5.200 05-MAR-08 CO-60 < 4.400 05-MAR-08 ZN-65 < 5.300

05-MAR-08 ZR-NB-95 < 3.200 05-MAR-08 CS-134 < 5.600 05-MAR-08 CS-1 37 < 2.300 05-MAR-08 BA-LA-140 < 7.000 05-MAR-08 GROSS BETA 2.107 +/-0.644 05-MAR-08 1-131 (CHEM) < 0.318 01-APR-08 MN-54 < 2.600 01-APR-08 CO-58 < 2.100 01-APR-08 FE-59 < 4.100 01-APR-08 CO-60 < 1.600 01-APR-08 ZN-65 < 1.600 01-APR-08 ZR-NB-95 < 3.100 01-APR-08 CS-1 34 < 3.100 01-APR-08 CS-1 37 < 3.800 01-APR-08 BA-LA-140 < 1.800 01-APR-08 GROSS BETA 2.863 +/- 1.005 01-APR-08 1-131 (CHEM) < 0.363 07-MAY-08 MN-54 < 4.100 07-MAY-08 CO-58 < 3.100 07-MAY-08 FE-59 < 4.000 07-MAY-08 CO-60 < 3.800 07-MAY-08 ZN-65 < 4.900 07-MAY-08 ZR-NB-95 < 5.300 07-MAY-08 CS-134 < 5.500 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 52

Exposure Pathway - Waterborne Drinking Water Location IO-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 07-MAY-08 CS-1 37 < 3.600 07-MAY-08 BA-LA-1 40 < 7.000 07-MAY-08 GROSS BETA 2.392 +/-1.037 07-MAY-08 1-131 (CHEM) < 0.368 04-JUN-08 MN-54 < 2.700 04-JUN-08 CO-58 < 2.800 04-JUN-08 FE-59 < 7.000 04-JUN-08 CO-60 < 3.400 04-JUN-08 ZN-65 < 8.100 04-JUN-08 ZR-NB-95 < 3.600 04-JUN-08 CS-1 34 < 5.500 04-JUN-08 CS-1 37 < 3.900 04-JUN-08 BA-LA-140 < 5.300 04-JUN-08 GROSS BETA 4.369 +/-1.112 04-JUN-08 1-131 (CHEM) < 0.314 02-JUL-08 MN-54 < 2.400 02-JUL-08 CO-58 < 1.600 02-JUL-08 FE-59 < 3.600 02-JUL-08 CO-60 < 2.400 02-JUL-08 ZN-65 < 6.700 02-JUL-08 ZR-NB-95 < 1.800 02-JUL-08 CS-1 34 < 2.700 02-JUL-08 CS-1 37 < 3.200 02-JUL-08 BA-LA- 140 < 3.400 02-JUL-08 GROSS BETA 3.046 +/- 0.535 02-JUL-08 1-131 (CHEM) < 0.381 06-AUG-08 MN-54 < 2.100 06-AUG-08 CO-58 < 4.500 06-AUG-08 FE-59 < 5.100 06-AUG-08 CO-60 < 3.000 06-AUG-08 ZN-65 < 4.200 06-AUG-08 ZR-NB-95 < 3.100 06-AUG-08 CS-1 34 < 1.900 06-AUG-08 CS-1 37 < 2.300 06-AUG-08 BA-LA-140 < 3.600 06-AUG-08 GROSS BETA 3.497 +/-1.114 06-AUG-08 1-131 (CHEM) < 0.238 03-SEP-08 MN-54 < 2.100 03-SEP-08 MN-54 < 2.000 Duplicate 03-SEP-08 CO-58 < 1.900 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 53

Exposure Pathway - Waterborne Drinking Water Location IO-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 03-SEP-08 CO-58 < 1.700 Duplicate 03-SEP-08 FE-59 < 3.300 03-SEP-08 FE-59 < 3.700 Duplicate 03-SEP-08 CO-60 < 2.400 03-SEP-08 CO-60 < 2.000 Duplicate 03-SEP-08 ZN-65 < 2.800 03-SEP-08 ZN-65 < 3.800' Duplicate 03-SEP-08 ZR-NB-95 < 3.600 03-SEP-08 ZR-NB-95 < 2.100 Duplicate 03-SEP-08 CS-134 < 2.500 03-SEP-08 CS-1 34 < 2.400 Duplicate 03-SEP-08 CS-1 37 < 2.900 03-SEP-08 CS-137 < 2.000 Duplicate 03-SEP-08 BA-LA-140 < 1.700 03-SEP-08 BA-LA-1 40 < 2.500 Duplicate 03-SEP-08 GROSS BETA 4.263 +/-2.011 03-SEP-08 GROSS BETA < 3.656 Duplicate 03-SEP-08 1-131 (CHEM) < 0.389 03-SEP-08 1-131 (CHEM) < 0.367 Duplicate 01-OCT-08 MN-54 < 2.300 01-OCT-08 CO-58 < 2.800 01-OCT-08 FE-59 < 4.900 01-OCT-08 CO-60 < 2.500 01-OCT-08 ZN-65 < 5.500 01-OCT-08 ZR-NB-95 < 2.000 01-OCT-08 CS-1 34 < 3.100 01-OCT-08 CS-1 37 < 3.100 01-OCT-08 BA-LA-1 40 < 3.800 01-OCT-08 GROSS BETA 2.930 +/- 0.681 01-OCT-08 1-131 (CHEM) < 0.375 05-NOV-08 MN-54 < 1.000 05-NOV-08 CO-58 < 1.100 05-NOV-08 FE-59 < 2.600 05-NOV-08 CO-60 < 1.300 05-NOV-08 ZN-65 < 2.400 05-NOV-08 ZR-NB-95 < 0.900 05-NOV-08 CS-134 < 1.000 05-NOV-08 CS-137 < 1.000 05-NOV-08 BA-LA-140 < 0.700 05-NOV-08 GROSS BETA 2.251 +/-0.625 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 54

Exposure Pathway - Waterborne Drinking Water Location 1O-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 05-NOV-08 1-131 (CHEM) < 0.288 03-DEC-08 MN-54 < 4.200 03-DEC-08 CO-58 < 2.600 03-DEC-08 FE-59 < 6.300 03-DEC-08 CO-60 < 3.700 03-DEC-08 ZN-65 < 8.000 03-DEC-08 ZR-NB-95 < 4.000 03-DEC-08 CS-134 < 3.000 03-DEC-08 CS-1 37 < 2.600 03-DEC-08 BA-LA-140 < 2.500 03-DEC-08 GROSS BETA 4.288 +/- 1.202 03-DEC-08 1-131 (CHEM) < 0.273 07-JAN-09 MN-54 < 3.200 07-JAN-09 CO-58 < 2.500 07-JAN-09 FE-59 < 2.800 07-JAN-09 CO-60 < 1.900 07-JAN-09 ZN-65 < 5.100 07-JAN-09 ZR-NB-95 < 2.700 07-JAN-09 CS-1 34 < 2.500 07-JAN-09 CS-1 37 < 2.800 07-JAN-09 BA-LA-1 40 < 1.800 07-JAN-09 GROSS BETA 5.049 +/-1.310 07-JAN-09 1-131 (CHEM) < 0.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 55

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 01-APR-08 H-3 <177.000 02-JUL-08 H-3 <171.000 01-OCT-08 H-3 <154.000 01-JAN-09 H-3 <133.000 01-JAN-09 H-3 <133.000 Duplicate 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 56

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location IO-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 01-APR-08 H-3 <177.000 02-JUL-08 H-3 <171.000 01-OCT-08 H-3 <154.000 01-JAN-09 H-3 <133.000 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 57

Exposure Pathway - Waterborne Shoreline Sediment Location DC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 08-MAY-08 K-40 11045.000 +/- 556.300 08-MAY-08 MN-54 < 24.900 08-MAY-08 CO-58 < 12.400 08-MAY-08 FE-59 < 26.800 08-MAY-08 CO-60 < 16.000 08-MAY-08 ZN-65 < 31.800 08-MAY-08 CS-1 34 < 16.700 08-MAY-08 CS-1 37 < 22.800 19-SEP-08 K-40 13846.000 +/-1172.000 19-SEP-08 MN-54 < 60.900 19-SEP-08 CO-58 < 56.800 19-SEP-08 FE-59 < 83.900 19-SEP-08 CO-60 60.900 +/- 31.100 19-SEP-08 ZN-65 < 124.100 19-SEP-08 CS-1 34 < 28.700 19-SEP-08 CS-1 37 160.900 +/- 57.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 58

Exposure Pathway - Waterborne Shoreline Sediment Location JRR Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-JUN-08 K-40 10631.000 +/- 819.800 26-JUN-08 MN-54 < 38.500 26-JUN-08 CO-58 < 36.800 26-JUN-08 FE-59 < 62.700 26-JUN-08 CO-60 < 14.800 26-JUN-08 ZN-65 < 73.800 26-JUN-08 CS-134 < 22.100 26-JUN-08 CS-137 131.100 +/- 41.600 17-OCT-08 K-40 9670.900 +/- 679.800 17-OCT-08 MN-54 < 31.000 17-OCT-08 CO-58 < 32.400 17-OCT-08 FE-59 < 45.400 17-OCT-08 CO-60 < 19.800 17-OCT-08 ZN-65 < 45.300 17-OCT-08 CS-1 34 < 16.300 17-OCT-08 CS-1 37 < 26.700 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 59

Exposure Pathway - Waterborne Shoreline Sediment Location SC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCiIKg Dry) 25-JUN-08 K-40 10664.000 +/- 570.000 25-JUN-08 MN-54 < 22.700 25-JUN-08 CO-58 < 23.300 25-JUN-08 FE-59 < 46.700 25-JUN-08 CO-60 < 8.700 25-JUN-08 ZN-65 < 51.000 25-JUN-08 CS-134 < 14.600 25-JUN-08 CS-1 37 98.700 +/- 30.600 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 60

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 08-MAY-08 COMMON CARP K-40 3464.100 +/- 41 2.800 08-MAY-08 COMMON CARP MN-54 < 11.200 08-MAY-08 COMMON CARP CO-58 < 7.500 08-MAY-08 COMMON CARP FE-59 < 23.700 08-MAY-08 COMMON CARP CO-60 < 12.100 08-MAY-08 COMMON CARP ZN-65 < 28.700 08-MAY-08 COMMON CARP CS-1 34 < 11.700 08-MAY-08 COMMON CARP CS-137 < 9.100 08-MAY-08 COMMON CARP H-3 10603.000 +/- 250.000 08-MAY-08 SMALLMOUTH BASS K-40 3733.500 +/- 609.000 08-MAY-08 SMALLMOUTH BASS MN-54 < 12.900 08-MAY-08 SMALLMOUTH BASS CO-58 < 23.800 08-MAY-08 SMALLMOUTH BASS FE-59 < 46.300 08-MAY-08 SMALLMOUTH BASS CO-60 < 21.300 08-MAY-08 SMALLMOUTH BASS ZN-65 < 27.900 08-MAY-08 SMALLMOUTH BASS CS-134 < 16.000 08-MAY-08 SMALLMOUTH BASS CS-137 < 15.400 08-MAY-08 SMALLMOUTH BASS H-3 11140.000+/- 262.000 08-MAY-08 SMALLMOUTH BUFFALO K-40 3494.500 +/- 550.600 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO K-40 3516.600 +/- 390.800 08-MAY-08 SMALLMOUTH BUFFALO MN-54 < 20.100 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO MN-54

• 13.900 08-MAY-08 SMALLMOUTH BUFFALO CO-58 <. 21.700 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO CO-58 < 9.200 08-MAY-08 SMALLMOUTH BUFFALO FE-59 < 42.900 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO FE-59 < 17.900 08-MAY-08 SMALLMOUTH BUFFALO CO-60 < 9.600 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO CO-60 < 11.700 08-MAY-08 SMALLMOUTH BUFFALO ZN-65 < 25.200 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO ZN-65 < 7.600 08-MAY-08 SMALLMOUTH BUFFALO CS-134 < 15.300 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO CS-134 < 12.600 08-MAY-08 SMALLMOUTH BUFFALO CS-137 < 15.500 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO CS-137 < 10.900 08-MAY-08 SMALLMOUTH BUFFALO H-3 9775.000 +/- 227.000 Duplicate 08-MAY-08 SMALLMOUTH BUFFALO H-3 9721.000 +/- 227.000 08-MAY-08 WHITE BASS K-40 2912.100 +/- 376.200 08-MAY-08 WHITE BASS MN-54 < 13.600 08-MAY-08 WHITE BASS CO-58 < 13.400 08-MAY-08 WHITE BASS FE-59 < 16.700 08-MAY-08 WHITE BASS CO-60 < 10.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 61

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 08-MAY-08 WHITE BASS ZN-65 < 15.400 08-MAY-08 WHITE BASS CS-134 < 13.000 08-MAY-08 WHITE BASS CS-137 < 14.800 08-MAY-08 WHITE BASS H-3 11021.000+/- 262.000 08-MAY-08 WIPER K-40 3362.500 +/- 482.800 08-MAY-08 WIPER MN-54 < 20.100 08-MAY-08 WIPER CO-58 < 13.100 08-MAY-08 WIPER FE-59 < 40.600 08-MAY-08 WIPER CO-60 < 14.500 08-MAY-08 WIPER ZN-65 < 38.800 08-MAY-08 WIPER CS-134 < 20.800 08-MAY-08 WIPER CS-1 37 < 14.300 08-MAY-08 WIPER H-3 9767.000 +/- 233.000 17-OCT-08 SMALLMOUTH BUFFALO K-40 2829.500 +/- 379.800 17-OCT-08 SMALLMOUTH BUFFALO MN-54 < 11.800 17-OCT-08 SMALLMOUTH BUFFALO CO-58 < 10.300 17-OCT-08 SMALLMOUTH BUFFALO FE-59 < 22.000 17-OCT-08 SMALLMOUTH BUFFALO CO-60 < 14.500 17-OCT-08 SMALLMOUTH BUFFALO ZN-65 < 17.200 17-OCT-08 SMALLMOUTH BUFFALO CS-1 34 < 6.900 17-OCT-08 SMALLMOUTH BUFFALO CS-137 < 10.100 17-OCT-08 SMALLMOUTH BUFFALO H-3 6215.000 +/- 195.000 17-OCT-08 WHITE BASS K-40 2754.100 +/- 362.200 17-OCT-08 WHITE BASS MN-54 < 8.600 17-OCT-08 WHITE BASS CO-58 < 6.600 17-OCT-08 WHITE BASS FE-59 < 27.500 17-OCT-08 WHITE BASS CO-60 < 12.200 17-OCT-08 WHITE BASS ZN-65 < 28.400 17-OCT-08 WHITE BASS CS-134 < 7.500 17-OCT-08 WHITE BASS CS-1 37 < 10.900 17-OCT-08 WHITE BASS H-3 6937.000 +/- 223.000 17-OCT-08 WIPER K-40 2880.300 +/- 362.200 17-OCT-08 WIPER MN-54 < 9.600 17-OCT-08 WIPER CO-58 < 5.900 17-OCT-08 WIPER FE-59 < 23.500 17-OCT-08 WIPER CO-60 < 12.000 17-OCT-08 WIPER ZN-65 < 18.600 17-OCT-08 WIPER CS-1 34 < 9.800 17-OCT-08 WIPER CS-1 37 < 9.800 17-OCT-08 WIPER H-3 6539.000 +1-221.000 21-OCT-08 BLUE CATFISH K-40 2395.000 +/- 328.900 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 62

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 21-OCT-08 BLUE CATFISH MN-54 < 10.800 21-OCT-08 BLUE CATFISH CO-58 < 10.900 21-OCT-08 BLUE CATFISH FE-59 < 29.400 21-OCT-08 BLUE CATFISH CO-60 < 12.100 21-OCT-08 BLUE CATFISH ZN-65 < 12.400 21-OCT-08 BLUE CATFISH CS-1 34 < 12.100 21-OCT-08 BLUE CATFISH CS-137 < 8.000 21-OCT-08 BLUE CATFISH H-3 5432.000 +/- 195.000 29-OCT-08 WALLEYE K-40 2652.500 +/- 360.800 29-OCT-08 WALLEYE MN-54 < 11.300 29-OCT-08 WALLEYE CO-58 < 14.700 29-OCT-08 WALLEYE FE-59 < 43.300 29-OCT-08 WALLEYE CO-60 < 13.800 29-OCT-08 WALLEYE ZN-65 < 18.100 29-OCT-08 WALLEYE CS-134 < 13.300 29-OCT-08 WALLEYE CS-1 37 < 10.800 29-OCT-08 WALLEYE H-3 4877.000 +/- 194.000 29-OCT-08 WHITE CRAPPIE K-40 2125.600 +/- 313.700 Duplicate 29-OCT-08 WHITE CRAPPIE K-40 2026.800 +/- 417.800 29-OCT-08 WHITE CRAPPIE MN-54 < 8.800 Duplicate 29-OCT-08 WHITE CRAPPIE MN-54 < 18.500 29-OCT-08 WHITE CRAPPIE CO-58 < 18.000 Duplicate 29-OCT-08 WHITE CRAPPIE CO-58 < 15.400 29-OCT-08 WHITE CRAPPIE FE-59 < 39.000 Duplicate 29-OCT-08 WHITE CRAPPIE FE-59 < 71.700 29-OCT-08 WHITE CRAPPIE CO-60 < 16.500 Duplicate 29-OCT-08 WHITE CRAPPIE CO-60 < 20.100 29-OCT-08 WHITE CRAPPIE ZN-65 < 11.600 Duplicate 29-OCT-08 WHITE CRAPPIE ZN-65 < 37.100 29-OCT-08 WHITE CRAPPIE CS-1 34 < 13.300 Duplicate 29-OCT-08 WHITE CRAPPIE CS-134 < 10.600 29-OCT-08 WHITE CRAPPIE CS-137 < 12.600 Duplicate 29-OCT-08 WHITE CRAPPIE CS-137 < 17.100 29-OCT-08 WHITE CRAPPIE H-3 3801.000 +/- 166.000 Duplicate 29-OCT-08 WHITE CRAPPIE H-3 3861.000+/- 167.000 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 63

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 30-MAY-08 BIGMOUTH BUFFALO K-40 3115.400 +/- 442.900 30-MAY-08 BIGMOUTH BUFFALO MN-54 < 13.500 30-MAY-08 BIGMOUTH BUFFALO CO-58 < 7.200 30-MAY-08 BIGMOUTH BUFFALO FE-59 < 23.500 30-MAY-08 BIGMOUTH BUFFALO CO-60 < 16.800 30-MAY-08 BIGMOUTH BUFFALO ZN-65 < 14.600 30-MAY-08 BIGMOUTH BUFFALO CS-1 34 < 15.500 30-MAY-08 BIGMOUTH BUFFALO CS-1 37 < 16.900 30-MAY-08 BIGMOUTH BUFFALO H-3 < 120.000 30-MAY-08 CHANNEL CATFISH K-40 3440.600 +/- 578.100 30-MAY-08 CHANNEL CATFISH MN-54 < 18.200 30-MAY-08 CHANNEL CATFISH CO-58 < 13.200 30-MAY-08 CHANNEL CATFISH FE-59 < 24.500 30-MAY-08 CHANNEL CATFISH CO-60 < 15.100 30-MAY-08 CHANNEL CATFISH ZN-65 < 18.700 30-MAY-08 CHANNEL CATFISH CS-1 34 < 11.300 30-MAY-08 CHANNEL CATFISH CS-1 37 < 18.600 30-MAY-08 CHANNEL CATFISH H-3 < 141.000 30-MAY-08 COMMON CARP K-40 3237.400 +/- 495.600 30-MAY-08 COMMON CARP MN-54 < 19.800 30-MAY-08 COMMON CARP CO-58 < 17.600 30-MAY-08 COMMON CARP FE-59 < 31.900 30-MAY-08 COMMON CARP CO-60 < 18.400 30-MAY-08 COMMON CARP ZN-65 < 26.800 30-MAY-08 COMMON CARP CS-1 34 < 18.100 30-MAY-08 COMMON CARP CS-137 < 15.700 30-MAY-08 COMMON CARP H-3 < 136.000 30-MAY-08 WHITE CRAPPIE K-40 2817.400 +/- 465.700 30-MAY-08 WHITE CRAPPIE MN-54 < 18.100 30-MAY-08 WHITE CRAPPIE CO-58 < 11.800 30-MAY-08 WHITE CRAPPIE FE-59 < 26.900 30-MAY-08 WHITE CRAPPIE CO-60 < 14.600 30-MAY-08 WHITE CRAPPIE ZN-65 < 21.000 30-MAY-08 WHITE CRAPPIE CS-134 < 16.600 30-MAY-08 WHITE CRAPPIE CS-137 < 18.300 30-MAY-08 WHITE CRAPPIE H-3 < 131.000 14-NOV-08 CHANNEL CATFISH K-40 3051.700 +/-470.200 14-NOV-08 CHANNEL CATFISH MN-54 < 21.200 14-NOV-08 CHANNEL CATFISH CO-58 < 26.700 14-NOV-08 CHANNEL CATFISH FE-59 < 48.300 14-NOV-08 CHANNEL CATFISH CO-60 < 18.600 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 64

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 14-NOV-08 CHANNEL CATFISH ZN-65 < 22.600 14-NOV-08 CHANNEL CATFISH CS-134 < 19.400 14-NOV-08 CHANNEL CATFISH CS-1 37 < 13.700 14-NOV-08 CHANNEL CATFISH H-3 < 114.000 14-NOV-08 COMMON CARP K-40 2512.400 +/- 503.300 14-NOV-08 COMMON CARP MN-54 < 19.100 14-NOV-08 COMMON CARP CO-58 < 17.100 14-NOV-08 COMMON CARP FE-59 < 64.900 14-NOV-08 COMMON CARP CO-60 < 18.800 14-NOV-08 COMMON CARP ZN-65 < 26.400 14-NOV-08 COMMON CARP CS-1 34 < 10.700 14-NOV-08 COMMON CARP CS-1 37 < 16.900 14-NOV-08 COMMON CARP H-3 < 142.000 14-NOV-08 SMALLMOUTH BUFFALO K-40 2900.300 +/- 367.500 14-NOV-08 SMALLMOUTH BUFFALO MN-54 < 15.300 14-NOV-08 SMALLMOUTH BUFFALO CO-58 < 11.400 14-NOV-08 SMALLMOUTH BUFFALO FE-59 < 28.500 14-NOV-08 SMALLMOUTH BUFFALO CO-60 < 14.800 14-NOV-08 SMALLMOUTH BUFFALO ZN-65 < 15.300 14-NOV-08 SMALLMOUTH BUFFALO CS-134 < 12.200 14-NOV-08 SMALLMOUTH BUFFALO CS-137 < 12.200 14-NOV-08 SMALLMOUTH BUFFALO H-3 < 113.000 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 65

Exposure Pathway - Ingestion Food/Garden Location D-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-MAY-08 HORSERADISH LEAVES BE-7 650.900 +/- 222.000 28-MAY-08 HORSERADISH LEAVES K-40 4161.400 +/- 644.500 28-MAY-08 HORSERADISH LEAVES MN-54 < 16.400 28-MAY-08 HORSERADISH LEAVES CO-58 < 16.700 28-MAY-08 HORSERADISH LEAVES FE-59 < 33.000 28-MAY-08 HORSERADISH LEAVES CO-60 < 15.200 28-MAY-08 HORSERADISH LEAVES ZN-65 < 67.000 28-MAY-08 HORSERADISH LEAVES ZR-NB-95 < 26.100 28-MAY-08 HORSERADISH LEAVES 1-131 < 27.000 28-MAY-08 HORSERADISH LEAVES CS-134 < 21.200 28-MAY-08 HORSERADISH LEAVES CS-1 37 < 14.600 25-JUN-08 HORSERADISH LEAVES BE-7 964.200 +/- 143.300 25-JUN-08 HORSERADISH LEAVES K-40 4668.500 +/- 390.400 25-JUN-08 HORSERADISH LEAVES MN-54 < 9.200 25-JUN-08 HORSERADISH LEAVES CO-58 < 10.400 25-JUN-08 HORSERADISH LEAVES FE-59 < 21.800 25-JUN-08 HORSERADISH LEAVES CO-60 < 9.400 25-JUN-08 HORSERADISH LEAVES ZN-65 < 27.300 25-JUN-08 HORSERADISH LEAVES ZR-NB-95 < 9.500 25-JUN-08 HORSERADISH LEAVES 1-131 < 15.200 25-JUN-08 HORSERADISH LEAVES CS-134 < 8.500 25-JUN-08 HORSERADISH LEAVES CS-137 < 6.500 30-JUL-08 HORSERADISH LEAVES BE-7 603.500 +/- 265.500 30-JUL-08 HORSERADISH LEAVES K-40 6417.100 +/- 641.400 30-JUL-08 HORSERADISH LEAVES MN-54 < 19.100 30-JUL-08 HORSERADISH LEAVES CO-58 < 19.000 30-JUL-08 HORSERADISH LEAVES FE-59 < 33.400 30-JUL-08 HORSERADISH LEAVES CO-60 < 24.200 30-JUL-08 HORSERADISH LEAVES ZN-65 < 32.800 30-JUL-08 HORSERADISH LEAVES ZR-NB-95 < 23.500 30-JUL-08 HORSERADISH LEAVES 1-131 < 49.200 30-JUL-08 HORSERADISH LEAVES CS-134 < 13.600 30-JUL-08 HORSERADISH LEAVES CS-1 37 < 29.100 27-AUG-08 HORSERADISH LEAVES BE-7 1098.000 +/- 183.100 27-AUG-08 HORSERADISH LEAVES K-40 3987.800 +/- 393.000 27-AUG-08 HORSERADISH LEAVES MN-54 < 11.500 27-AUG-08 HORSERADISH LEAVES CO-58 < 8.300 27-AUG-08 HORSERADISH LEAVES FE-59 < 15.500 27-AUG-08 HORSERADISH LEAVES CO-60 < 12.800 27-AUG-08 HORSERADISH LEAVES ZN-65 < 17.400 27-AUG-08 HORSERADISH LEAVES ZR-NB-95 < 9.700 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 66

Exposure Pathway - Ingestion Food/Garden Location D-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 27-AUG-08 HORSERADISH LEAVES 1-131 < 14.500 27-AUG-08 HORSERADISH LEAVES CS-134 < 7.700 27-AUG-08 HORSERADISH LEAVES CS-1 37 < 9.800 17-SEP-08 HORSERADISH LEAVES BE-7 476.900 +/- 165.700 17-SEP-08 HORSERADISH LEAVES K-40 3268.500 +/- 390.600 17-SEP-08 HORSERADISH LEAVES MN-54 < 11.500 17-SEP-08 HORSERADISH LEAVES CO-58 < 10.800 17-SEP-08 HORSERADISH LEAVES FE-59 < 20.700 17-SEP-08 HORSERADISH LEAVES CO-60 < 13.800 17-SEP-08 HORSERADISH LEAVES ZN-65 < 19.200 17-SEP-08 HORSERADISH LEAVES ZR-NB-95 < 9.500 17-SEP-08 HORSERADISH LEAVES 1-131 < 17.500 17-SEP-08 HORSERADISH LEAVES CS-134 < 9.100 17-SEP-08 HORSERADISH LEAVES CS-1 37 < 10.000 17-OCT-08 HORSERADISH LEAVES BE-7 632.900 +/- 193.900 17-OCT-08 HORSERADISH LEAVES K-40 6310.800 +/- 552.200 17-OCT-08 HORSERADISH LEAVES MN-54 < 10.300 17-OCT-08 HORSERADISH LEAVES CO-58 < 16.300 17-OCT-08 HORSERADISH LEAVES FE-59 < 38.600 17-OCT-08 HORSERADISH LEAVES CO-60 < 17.400 17-OCT-08 HORSERADISH LEAVES ZN-65 < 41.300 17-OCT-08 HORSERADISH LEAVES ZR-NB-95 < 16.200 17-OCT-08 HORSERADISH LEAVES 1-131 < 29.700 17-OCT-08 HORSERADISH LEAVES CS-1 34 < 16.100 17-OCT-08 HORSERADISH LEAVES CS-1 37 < 21.400 13-NOV-08 HORSERADISH LEAVES BE-7 870.500 +/- 196.600 13-NOV-08 HORSERADISH LEAVES K-40 5960.800 +1 523.000 13-NOV-08 HORSERADISH LEAVES MN-54 < 15.400 13-NOV-08 HORSERADISH LEAVES CO-58 < 14.100 13-NOV-08 HORSERADISH LEAVES FE-59 < 30.800 13-NOV-08 HORSERADISH LEAVES CO-60 < 12.500 13-NOV-08 HORSERADISH LEAVES ZN-65 < 35.100 13-NOV-08 HORSERADISH LEAVES ZR-NB-95 < 17.900 13-NOV-08 HORSERADISH LEAVES 1-131 < 18.300 13-NOV-08 HORSERADISH LEAVES CS-1 34 < 18.100 13-NOV-08 HORSERADISH LEAVES CS-137 < 15.600 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 67

Exposure Pathway - Ingestion Food/Garden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-MAY-08 HORSERADISH LEAVES BE-7 627.200 +/- 153.600 28-MAY-08 HORSERADISH LEAVES K-40 3348.500 +/- 414.700 28-MAY-08 HORSERADISH LEAVES MN-54 < 14.600 28-MAY-08 HORSERADISH LEAVES CO-58 < 16.300 28-MAY-08 HORSERADISH LEAVES FE-59 < 15.100 28-MAY-08 HORSERADISH LEAVES CO-60 < 11.000 28-MAY-08 HORSERADISH LEAVES ZN-65 < 22.200 28-MAY-08 HORSERADISH LEAVES ZR-NB-95 *< 13.700 28-MAY-08 HORSERADISH LEAVES 1-131 < 23.800 28-MAY-08 HORSERADISH LEAVES CS-134 < 11.900 28-MAY-08 HORSERADISH LEAVES CS-1 37 < 15.200 25-JUN-08 HORSERADISH LEAVES BE-7 1263.800 +/- 188.800 25-JUN-08 HORSERADISH LEAVES K-40 3630.700 +/- 349.000 25-JUN-08 HORSERADISH LEAVES MN-54 < 7.200 25-JUN-08 HORSERADISH LEAVES CO-58 < 8.900 25-JUN-08 HORSERADISH LEAVES FE-59 < 15.900 25-JUN-08 HORSERADISH LEAVES CO-60 < 12.800 25-JUN-08 HORSERADISH LEAVES ZN-65 < 17.400 25-JUN-08 HORSERADISH LEAVES ZR-NB-95 < 6.200 25-JUN-08 HORSERADISH LEAVES 1-131 < 11.000 25-JUN-08 HORSERADISH LEAVES CS-134

• 6.000 25-JUN-08 HORSERADISH LEAVES CS-137 < 10.500 30-JUL-08 HORSERADISH LEAVES BE-7 1279.200 +/- 205.700 30-JUL-08 HORSERADISH LEAVES K-40 4404.800 +/- 493.700 30-JUL-08 HORSERADISH LEAVES MN-54 < 19.300 30-JUL-08 HORSERADISH LEAVES CO-58 < 15.500 30-JUL-08 HORSERADISH LEAVES FE-59 < 40.200 30-JUL-08 HORSERADISH LEAVES CO-60 < 11.600 30-JUL-08 HORSERADISH LEAVES ZN-65 < 23.900 30-JUL-08 HORSERADISH LEAVES ZR-NB-95 < 15.700 30-JUL-08 HORSERADISH LEAVES 1-131 < 21.400 30-JUL-08 HORSERADISH LEAVES CS-134 < 14.800 30-JUL-08 HORSERADISH LEAVES CS-137 < 16.700 28-AUG-08 HORSERADISH LEAVES BE-7 424.100 +/- 198.500 28-AUG-08 HORSERADISH LEAVES K-40 4724.300 +/- 466.400 28-AUG-08 HORSERADISH LEAVES MN-54 < 10.300 28-AUG-08 HORSERADISH LEAVES CO-58 < 8.000 28-AUG-08 HORSERADISH LEAVES FE-59 < 29.100 28-AUG-08 HORSERADISH LEAVES CO-60 < 18.500 28-AUG-08 HORSERADISH LEAVES ZN-65 < 17.900 28-AUG-08 HORSERADISH LEAVES ZR-NB-95 < 17.100 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 68

Exposure Pathway - Ingestion Food/Garden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-AUG-08 HORSERADISH LEAVES 1-131 < 13.300 28-AUG-08 HORSERADISH LEAVES CS-134 < 7.100 28-AUG-08 HORSERADISH LEAVES CS-1 37 < 11.400 17-SEP-08 HORSERADISH LEAVES BE-7 657.000 +/- 211.100 17-SEP-08 HORSERADISH LEAVES K-40 4531.000 +/- 421.800 17-SEP-08 HORSERADISH LEAVES MN-54 < 8.500 17-SEP-08 HORSERADISH LEAVES CO-58 < 12.700 17-SEP-08 HORSERADISH LEAVES FE-59 < 26.200 17-SEP-08 HORSERADISH LEAVES CO-60 < 14.400 17-SEP-08 HORSERADISH LEAVES ZN-65 < 25.500 17-SEP-08 HORSERADISH LEAVES ZR-NB-95 < 9.100 17-SEP-08 HORSERADISH LEAVES 1-131 < 13.200 17-SEP-08 HORSERADISH LEAVES CS-1 34 < 9.800 17-SEP-08 HORSERADISH LEAVES CS-1 37 < 6.600 17-OCT-08 HORSERADISH LEAVES BE-7 < 174.300 17-OCT-08 HORSERADISH LEAVES K-40 2744.800 +/- 380.000 17-OCT-08 HORSERADISH LEAVES MN-54 < 17.500 17-OCT-08 HORSERADISH LEAVES CO-58 < 7.900 17-OCT-08 HORSERADISH LEAVES FE-59 < 27.400 17-OCT-08 HORSERADISH LEAVES CO-60 < 13.500 17-OCT-08 HORSERADISH LEAVES ZN-65 < 21.800 17-OCT-08 HORSERADISH LEAVES ZR-NB-95 < 18.700 17-OCT-08 HORSERADISH LEAVES 1-131 < 22.800 17-OCT-08 HORSERADISH LEAVES CS-134 < 16.500 17-OCT-08 HORSERADISH LEAVES CS-137 < 22.100 13-NOV-08 HORSERADISH LEAVES BE-7 811.200 +/- 198.700 13-NOV-08 HORSERADISH LEAVES K-40 3367.500 +/- 394.900 13-NOV-08 HORSERADISH LEAVES MN-54 < 14.100 13-NOV-08 HORSERADISH LEAVES CO-58 < 7.700 13-NOV-08 HORSERADISH LEAVES FE-59 < 22.400 13-NOV-08 HORSERADISH LEAVES CO-60 < 10.300 13-NOV-08 HORSERADISH LEAVES ZN-65 < 31.700 13-NOV-08 HORSERADISH LEAVES ZR-NB-95 < 15.500 13-NOV-08 HORSERADISH LEAVES 1-131 < 18.800 13-NOV-08 HORSERADISH LEAVES CS-134 < 12.600 13-NOV-08 HORSERADISH LEAVES CS-137 < 14.400 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 69

Exposure Pathway - Ingestion Food/Garden Location Q-6 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCilKg Wet) 29-MAY-08 RHUBARB BE-7 741.900 +/- 261.000 29-MAY-08 RHUBARB K-40 3627.700 +/- 521.600 29-MAY-08 RHUBARB MN-54 < 16.100 29-MAY-08 RHUBARB CO-58 < 13.000 29-MAY-08 RHUBARB FE-59

• 22.500 29-MAY-08 RHUBARB CO-60 < 12.800 29-MAY-08 RHUBARB ZN-65 < 15.700 29-MAY-08 RHUBARB ZR-NB-95 < 8.500 29-MAY-08 RHUBARB 1-131 < 22.700 29-MAY-08 RHUBARB CS-134 < 19.500 29-MAY-08 RHUBARB CS-137 < 15.300 25-JUN-08 RHUBARB BE-7 786.500 +- 163.900 25-JUN-08 RHUBARB K-40 4951.200 +/- 433.300 25-JUN-08 RHUBARB MN-54 < 8.700 25-JUN-08 RHUBARB CO-58 < 10.800 25-JUN-08 RHUBARB FE-59 < 22.900 25-JUN-08 RHUBARB CO-60

• 10.800 25-JUN-08 RHUBARB ZN-65 < 29.700

.25-JUN-08 RHUBARB ... .... ZR-NB-95 < 18.7d0

,25-JUN-08 RHUBARB 1-131 < 10.900 25-JUN-08 RHUBARB CS-134 < 7.900 25-JUN-08 RHUBARB CS-137 < 12.600 30-JUL-08 SQUASH LEAVES BE-7 961.700 +- 229.200 30-JUL-08 SQUASH LEAVES K-40 5255.600 +/- 523.200 30-JUL-08 SQUASH LEAVES MN-54 < 14.500 30-JUL-08 SQUASH LEAVES CO-58 < 19.300 30-JUL-08 SQUASH LEAVES FE-59 < 24.600 30-JUL-08 SQUASH LEAVES CO-60 < 18.500 30-JUL-08 SQUASH LEAVES ZN-65 < 37.300 30-JUL-08 SQUASH LEAVES ZR-NB-95 < 19.500 30-JUL-08 SQUASH LEAVES 1-131 < 38.900 30-JUL-08 SQUASH LEAVES CS-134 < 19.100 30-JUL-08 SQUASH LEAVES CS-1 37 < 24.100 28-AUG-08 HORSERADISH LEAVES BE-7 888.400 +/- 195.800 28-AUG-08 HORSERADISH LEAVES K-40 6494.200 +/- 516.100 28-AUG-08 HORSERADISH LEAVES MN-54 < 16.300 28-AUG-08 HORSERADISH LEAVES CO-58 < 10.800 28-AUG-08 HORSERADISH LEAVES FE-59 < 32.900 28-AUG-08 HORSERADISH LEAVES CO-60 < 14.800 28-AUG-08 HORSERADISH LEAVES ZN-65 < 21.600 28-AUG-08 HORSERADISH LEAVES ZR-NB-95 < 12.300 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 70

Exposure Pathway - Ingestion Food/Garden Location Q-6 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-AUG-08 HORSERADISH LEAVES 1-131 < 28.000 28-AUG-08 HORSERADISH LEAVES CS-134 < 11.200 28-AUG-08 HORSERADISH LEAVES CS-1 37 < 17.500 17-SEP-08 HORSERADISH LEAVES BE-7 662.000 +/- 188.500 17-SEP-08 HORSERADISH LEAVES K-40 4573.700 +/- 448.500 17-SEP-08 HORSERADISH LEAVES MN-54 < 13.600 17-SEP-08 HORSERADISH LEAVES CO-58 < 7.600 17-SEP-08 HORSERADISH LEAVES FE-59 < 24.800 17-SEP-08 HORSERADISH LEAVES CO-60 < 12.100 17-SEP-08 HORSERADISH LEAVES ZN-65 < 26.400 17-SEP-08 HORSERADISH LEAVES ZR-NB-95 < 10.300 17-SEP-08 HORSERADISH LEAVES 1-131 < 20.400 17-SEP-08 HORSERADISH LEAVES CS-1 34 < 7.100 17-SEP-08 HORSERADISH LEAVES CS-137 < 12.600 17-OCT-08 HORSERADISH LEAVES BE-7 381.200 +/- 161.600 17-OCT-08 HORSERADISH LEAVES K-40 5783.500 +1 502.400 17-OCT-08 HORSERADISH LEAVES MN-54 < 10.700 17-OCT-08 HORSERADISH LEAVES CO-58 < 11.800 17-OCT-08 HORSERADISH LEAVES FE-59 < 23.700 17-OCT-08 HORSERADISH LEAVES CO-60 < 11.800 17-OCT-08 HORSERADISH LEAVES ZN-65 < 22.900 17-OCT-08 HORSERADISH LEAVES ZR-NB-95 < 12.200 17-OCT-08 HORSERADISH LEAVES 1-131 < 23.100 17-OCT-08 HORSERADISH LEAVES CS-134 < 15.300 17-OCT-08 HORSERADISH LEAVES CS-137 < 14.300 13-NOV-08 HORSERADISH LEAVES BE-7 726.400 +1 212.900 13-NOV-08 HORSERADISH LEAVES K-40 4921.800 +/- 557.600 13-NOV-08 HORSERADISH LEAVES MN-54 < 21.400 13-NOV-08 HORSERADISH LEAVES CO-58 < 17.600 13-NOV-08 HORSERADISH LEAVES FE-59 < 24.700 13-NOV-08 HORSERADISH LEAVES CO-60 < 12.900 13-NOV-08 HORSERADISH LEAVES ZN-65 < 26.400 13-NOV-08 HORSERADISH LEAVES ZR-NB-95 < 13.000 13-NOV-08 HORSERADISH LEAVES 1-131 < 35.500 13-NOV-08 HORSERADISH LEAVES CS-134 < 17.400 13-NOV-08 HORSERADISH LEAVES < 17.500 CS-137 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 71

Exposure Pathway - Ingestion Feed and Forage Location NR-D1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 13-OCT-08 NON-IRRIGATED CORN BE-7 < 53.200 13-OCT-08 NON-IRRIGATED CORN K-40 2765.000 +/- 187.200 13-OCT-08 NON-IRRIGATED CORN MN-54

• 6.200 13-OCT-08 NON-IRRIGATED CORN CO-58

• 2.700 13-OCT-08 NON-IRRIGATED CORN FE-59 < 11.100 13-OCT-08 NON-IRRIGATED CORN CO-60

• 7.400 13-OCT-08 NON-IRRIGATED CORN ZN-65 < 3.900 13-OCT-08 NON-IRRIGATED CORN ZR-NB-95 < 6.600 13-OCT-08 NON-IRRIGATED CORN 1-131 < 11.300 13-OCT-08 NON-IRRIGATED CORN CS-1 34 < 3.700 13-OCT-08 NON-IRRIGATED CORN CS-137 < 3.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 72

Exposure Pathway - Ingestion Feed and Forage Location NR-U1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 02-OCT-08 NON-IRRIGATED CORN BE-7 < 116.200 02-OCT-08 NON-IRRIGATED CORN K-40 2710.200 +/- 336.000 02-OCT-08 NON-IRRIGATED CORN MN-54 < 13.800 02-OCT-08 NON-IRRIGATED CORN CO-58 < 15.400 02-OCT-08 NON-IRRIGATED CORN FE-59 < 30.000 02-OCT-08 NON-IRRIGATED CORN CO-60 < 12.900 02-OCT-08 NON-IRRIGATED CORN ZN-65 < 17.000 02-OCT-08 NON-IRRIGATED CORN ZR-NB-95 < 11.000 02-OCT-08 NON-IRRIGATED CORN 1-131 < 26.800 02-OCT-08 NON-IRRIGATED CORN CS-134

• 6.200 02-OCT-08 NON-IRRIGATED CORN CS-137 < 15.200 27-OCT-08 NON-IRRIGATED SOYBEANS BE-7 < 99.700 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS BE-7 < 134.000 27-OCT-08 NON-IRRIGATED SOYBEANS K-40 11938.000+/- 470.200 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS K-40 12605.000 +/- 488.400 27-OCT-08 NON-IRRIGATED SOYBEANS MN-54

• 9.200 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS MN-54 < 13.300 27-OCT-08 NON-IRRIGATED SOYBEANS CO-58 < 11.800 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS CO-58

• 6.200 27-OCT-08 NON-IRRIGATED SOYBEANS FE-59 < 34.700 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS FE-59 < 34.300 27-OCT-08 NON-IRRIGATED SOYBEANS CO-60 < 10.500 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS CO-60 < 12.700 27-OCT-08 NON-IRRIGATED SOYBEANS ZN-65 < 15.200 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS ZN-65 < 18.400 27-OCT-08 NON-IRRIGATED SOYBEANS ZR-NB-95

• 9.300 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS ZR-NB-95 < 13.500 27-OCT-08 NON-IRRIGATED SOYBEANS 1-131 < 43.300 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS 1-131 < 57.700 27-OCT-08 NON-IRRIGATED SOYBEANS CS-1 34 < 8.600 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS CS-1 34 < 10.000 27-OCT-08 NON-IRRIGATED SOYBEANS CS-137

• 7.600 Duplicate 27-OCT-08 NON-IRRIGATED SOYBEANS CS-137

• 9.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 73

Exposure Pathway - Aquatic Bottom Sediment Location DC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 08-MAY-08 K-40 16124.000 +/- 963.800 08-MAY-08 MN-54 < 39.900 08-MAY-08 CO-58 < 26.200 08-MAY-08 FE-59 < 51.600 08-MAY-08 CO-60 127.400 +/- 36.200 08-MAY-08 ZN-65 < 75.100 08-MAY-08 CS-134 < 25.500 08-MAY-08 CS-1 37 216.500 +/- 51.900 19-SEP-08 K-40 11114.000 +/- 620.300 19-SEP-08 MN-54 < 27.700 19-SEP-08 CO-58 < 24.000 19-SEP-08 FE-59 < 22.000 19-SEP-08 CO-60 < 14.700 19-SEP-08 ZN-65 < 35.700 19-SEP-08 CS-1 34 < 10.800 19-SEP-08 CS-1 37 < 25.100 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 74

Exposure Pathway - Aquatic Bottom Sediment Location DC-A Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCiIKg Dry) 26-JUN-08 K-40 14704.000 +/- 1222.000 26-JUN-08 MN-54 < 64.000 26-JUN-08 CO-58 < 54.100 26-JUN-08 FE-59 < 84.300 26-JUN-08 CO-60 95.600 +/- 33.700 26-JUN-08 ZN-65 < 89.300 26-JUN-08 CS-134 < 41.400 26-JUN-08 CS-1 37 150.900 +/- 79.400 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 75

Exposure Pathway - Aquatic Bottom Sediment Location DC-B Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-JUN-08 K-40 12762.000 +/- 1249.000 26-JUN-08 MN-54 < 49.300 26-JUN-08 CO-58 < 62.600 26-JUN-08 FE-59 < 118.600 26-JUN-08 CO-60 < 45.900 26-JUN-08 ZN-65 < 66.900 26-JUN-08 CS-1 34 < 38.800 26-JUN-08 CS-137 193.500 +/- 77.500 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 76

Exposure Pathway - Aquatic Bottom Sediment Location DC-C Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-JUN-08 K-40 7270.300 +/- 698.700 Duplicate 26-JUN-08 K-40 7307.200 +/- 714.400 26-JUN-08 MN-54 29.600 Duplicate 26-JUN-08 MN-54 32.400 26-JUN-08 CO-58 31.800 Duplicate 26-JUN-08 CO-58 32.400 26-JUN-08 FE-59 66.800 Duplicate 26-JUN-08 FE-59 47.600 26-JUN-08 CO-60 29.900 Duplicate 26-JUN-08 CO-60 25.000 26-JUN-08 ZN-65 50.000 Duplicate 26-JUN-08 ZN-65 67.500 26-JUN-08 CS-1 34 19.100 Duplicate 26-JUN-08 CS-1 34 23.600 26-JUN-08 CS-1 37 76.300+1 39.600 Duplicate 26-JUN-08 CS-137 70.200+- 34.300 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 77

Exposure Pathway - Aquatic Bottom Sediment Location DC-D Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-JUN-08 K-40 13097.000 +/- 1352.000 26-JUN-08 MN-54 < 52.000 26-JUN-08 CO-58 < 48.100 26-JUN-08 FE-59 < 66.700 26-JUN-08 CO-60 < 47.500 26-JUN-08 ZN-65 < 97.200 26-JUN-08 CS-1 34 < 35.700 26-JUN-08 CS-1 37 183.100 +/- 77.400 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 78

Exposure Pathway - Aquatic Bottom Sediment Location DC-E Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-JUN-08 K-40 7932.800 +/- 758.500 26-JUN-08 MN-54 < 29.600 26-JUN-08 CO-58 < 31.700 26-JUN-08 FE-59 < 59.200 26-JUN-08 CO-60 < 19.500 26-JUN-08 ZN-65 < 66.700 26-JUN-08 CS-134 < 25.400 26-JUN-08 CS-137 < 30.400 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 79

Exposure Pathway - Aquatic Bottom Sediment Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 22-APR-08 K-40 10267.000 +/- 878.100 22-APR-08 MN-54 < 28.500 22-APR-08 CO-58 < 20.000 22-APR-08 FE-59 < 84.200 22-APR-08 CO-60 < 31.500 22-APR-08 ZN-65 < 78.700 22-APR-08 CS-1 34 < 31.900 22-APR-08 CS-1 37 59.600 +/- 33.500 13-MAY-08 K-40 9582.800 +/- 572.500 13-MAY-08 MN-54 < 23.200 13-MAY-08 CO-58 < 23.100 13-MAY-08 FE-59 < 21.900 13-MAY-08 CO-60 < 13.500 13-MAY-08 ZN-65 < 43.400 13-MAY-08 CS-134 < 13.600 13-MAY-08 CS-1 37 63.100 +/- 30.100 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 80

Exposure Pathway - Aquatic Bottom Sediment Location JRR Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 26-JUN-08 K-40 15055.000 +/- 1320.000 26-JUN-08 MN-54 < 75.800 26-JUN-08 CO-58 < 50.900 26-JUN-08 FE-59 < 130.200 26-JUN-08 CO-60 < 35.600 26-JUN-08 ZN-65 < 80.600 26-JUN-08 CS-1 34 < 48.600 26-JUN-08 CS-1 37 120.700 +/- 56.000 14-NOV-08 K-40 13202.000 +/- 715.800 14-NOV-08 MN-54 < 27.700 14-NOV-08 CO-58 < 42.300 14-NOV-08 FE-59 < 104.800 14-NOV-08 CO-60 < 17.500 14-NOV-08 ZN-65 < 53.000 14-NOV-08 CS-1 34 < 22.500 14-NOV-08 CS-1 37 < 26.600 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 81

Exposure Pathway - Aquatic Bottom Sediment Location MUDS Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 22-APR-08 K-40 7650.100 +/- 549.500 22-APR-08 MN-54 < 25.200 22-APR-08 CO-58 < 18.900 22-APR-08 FE-59 < 58.700 22-APR-08 CO-60 < 9.000 22-APR-08 ZN-65 < 40.000 22-APR-08 CS-1 34 < 16.500 22-APR-08 CS-137 < 17.800 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 82

Exposure Pathway - Aquatic Vegetation Location DC-ALT Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 26-JUN-08 AMERICAN PONDWEED BE-7 < 105.000 26-JUN-08 AMERICAN PONDWEED K-40 2124.700 +/- 259.900 26-JUN-08 AMERICAN PONDWEED MN-54 < 9.000 26-JUN-08 AMERICAN PONDWEED CO-58 < 8.700 26-JUN-08 AMERICAN PONDWEED FE-59 < 17.400 26-JUN-08 AMERICAN. PONDWEED CO-60 < 7.000 26-JUN-08 AMERICAN PONDWEED ZN-65 < 12.500 26-JUN-08 AMERICAN PONDWEED ZR-NB-95 < 5.300 26-JUN-08 AMERICAN PONDWEED 1-131 < 14.400 26-JUN-08 AMERICAN PONDWEED CS-1 34 < 4.800 26-JUN-08 AMERICAN PONDWEED CS-137 < 10.300 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 83

Exposure Pathway - Aquatic Vegetation Location EEA Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCilKg Wet) 11-JUN-08 WATER PLANTAIN BE-7 709.200 +/- 150.100 11-JUN-08 .WATER PLANTAIN K-40 3721.200 +/- 313.800 11-JUN-08 WATER PLANTAIN MN-54 < 13.600 11-JUN-08 WATER PLANTAIN CO-58 < 11.600 11-JUN-08 WATER PLANTAIN FE-59 < 19.400 11-JUN-08 WATER PLANTAIN CO-60 < 12.400 11-JUN-08 WATER PLANTAIN ZN-65

• 26.700 11-JUN-08 WATER PLANTAIN ZR-NB-95 < 12.300

.1 1-JUN-08 WATER PLANTAIN 1-131

• 31.700 11-JUN-08 WATER PLANTAIN CS-134 < 12.400 11-JUN-08 WATER PLANTAIN CS-137 34.800 +/- 19.500 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 84

Exposure Pathway - Aquatic Vegetation Location MUDS Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 10-JUN-08 PONDWEED BE-7 316.000 -*-- 123.200 10-JUN-08 PONDWEED K-40 3059.800 4 -- 281.000 10-JUN-08 PONDWEED MN-54 < 10.200 10-JUN-08 PONDWEED CO-58 < 11.200 10-JUN-08 PONDWEED FE-59 < 21.100 10-JUN-08 PONDWEED CO-60 < 8.300 10-JUN-08 PONDWEED ZN-65 < 15.000 10-JUN-08 PONDWEED ZR-NB-95 < 10.600 10-JUN-08 PONDWEED 1-131 < 22.700 10-JUN-08 PONDWEED CS-134 < 8.600 10-JUN-08 PONDWEED CS-1 37 < 10.500 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 85

Exposure Pathway - Terrestrial Vegetation Location EEA Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 28-MAY-08 PASTURAGE BE-7 688.100 +/- 154.600 28-MAY-08 PASTURAGE K-40 4588.500 +1-409.600 28-MAY-08 PASTURAGE MN-54 < 11.500 28-MAY-08 PASTURAGE CO-58 < 4.700 28-MAY-08 PASTURAGE FE-59 < 12.800 28-MAY-08 PASTURAGE CO-60 < 11.500 28-MAY-08 PASTURAGE ZN-65 < 22.900 28-MAY-08 PASTURAGE ZR-NB-95 < 11.700 28-MAY-08 PASTURAGE 1-131 < 23.300 28-MAY-08 PASTURAGE CS-1 34 < 12.300 28-MAY-08 PASTURAGE CS-1 37 < 11.100 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 86

Exposure Pathway - Terrestrial Vegetation Location MUDS Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 10-JUN-08 PASTURAGE BE-7 2467.200 +/- 207.200 10-JUN-08 PASTURAGE K-40 4933.900 +/- 340.400 10-JUN-08 PASTURAGE MN-54 < 8.900 10-JUN-08 PASTURAGE CO-58 < 11.100 10-JUN-08 PASTURAGE FE-59 < 13.100 10-JUN-08 PASTURAGE CO-60 < 8.800 10-JUN-08 PASTURAGE ZN-65 < 21.500 10-JUN-08 PASTURAGE ZR-NB-95 < 7.900 10-JUN-08 PASTURAGE 1-131 < 34.000 10-JUN-08 PASTURAGE CS-1 34 < 7.700 10-JUN-08 PASTURAGE CS-1 37 < 13.800 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 87

Exposure Pathway - Terrestrial Soil Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 13-MAY-08 K-40 10250.000 +/- 662.600 13-MAY-08 MN-54 < 27.900 13-MAY-08 CO-58 < 26.600 13-MAY-08 FE-59 < 33.400 13-MAY-08 CO-60 < 7.600 13-MAY-08 ZN-65 < 34.700 13-MAY-08 CS-134 < 15.500 13-MAY-08 CS-137 249.500 +/- 37.900 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 88

Exposure Pathway - Terrestrial Soil Location MUDS Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 10-JUN-08 K-40 6826.100 +/- 538.500 10-JUN-08 MN-54 < 22.200 10-JUN-08 CO-58 < 15.800 10-JUN-08 FE-59 < 16.600 10-JUN-08 CO-60 < 10.800 10-JUN-08 ZN-65 < 42.100 10-JUN-08 CS-134 < 9.500 10-JUN-08 CS-137 126.200 +/- 29.200 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 89

Exposure Pathway - Ingestion Deer Location A1.6 Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 30-APR-08 DEER MEAT K-40 3203.000 +/- 278.200 30-APR-08 DEER MEAT MN-54 < 9.400 30-APR-08 DEER MEAT CO-58 < 8.400 30-APR-08 DEER MEAT FE-59 < 18.500 30-APR-08 DEER MEAT CO-60 < 7.300 30-APR-08 DEER MEAT ZN-65 < 12.500 30-APR-08 DEER MEAT CS-134 < 8.800 30-APR-08 DEER MEAT CS-1 37 < 8.300 30-APR-08 DEER MEAT H-3 243.000+/- 64.000 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 90

WOLF CREEK GENERATING STATION 2008 LAND USE CENSUS REPORT Revision 1 Prepared by:

12-10-2008 Teresa L. Rice Date Peer Review:

12-10-2008 Ralph L. Logsdon Date Approved by:

12-11-2008 Robert A. Hammond Date 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 1

EXECUTIVE

SUMMARY

The 2008 Land Use Census Report has been revised to incorporate the re-calculated D/Qs for the broadleaf vegetation locations using the data from Engineering Evaluation SA-07-001.

The annual Land Use Census of rural residents within five miles of the Wolf Creek Generating Station (WCGS) has been completed for 2008 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.

Changes may be necessary for the Radiological Environmental Monitoring Program (REMP) broadleaf vegetation sample locations for 2009. The two broadleaf vegetation locations with the highest calculated annual average D/Q rankings are Q2.35-MILA1619 and L2.39-NARD1309. AP 07B-004 specifies that an "alternate location may be used to provide continued monitoring". The third-ranked garden is N2.38-RODR9. Prior to the 2009 growing season the residents should be contacted and based upon their cooperation, the program should be changed accordingly.

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 with highest calculated annual average D/Q."

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

METHODOLOGY Two hundred 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 1-3.

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

These results are contained in Table 4.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 2

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

The nearest occupied residences in each sector remained the same as last year.

Seven 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.

2608 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 3

TABLE 1 2008 Land Use Census Data Location of Nearest:

Sector Residence Milking Animals Broadleaf Garden A A2.60-17TE1 520 None A4.91 -OXRD1940 B B1.86-PLRD16XX None B3.53-QURD1755 C C1.92-16RD1655 None C3.16-QURD 1712 D D2.03-QULA1571 None D3.00-16RD1829 E E1.77-QULA1485 None None F F1.76-14RD1730 None F2.44-RERD1391 G G3.03-13RD1820 None G3.66-12RD1814 H H3.09-12RD1711 None H3.30-QURD1 175 J J3.70-1 1RD1540 None J3.80-11 RD1535 K K2.70-12LA1 439 None None L L2.10-NARD 1339 None L2.39-NARD1309 M M2.47-14RD1322 None M3.78-LYRD1390 N N1.71-NARD1441 None N2.38-RODR9 P P2.76-HW751534 None P2.99-SOSTI 00 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 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 4

TABLE 2 SECTOR 2007 NEAREST 2008 NEAREST RESIDENCE RESIDENCE A A2.60-17TE1520 A2.60-17TE1 520 B B1.86-PLRD16XX B1.86-PLRD16XX C C1.92-16RD1655 C1.92-16RD1655 D D2.03-QULA1571 D2.03-QULA1571 E E1.77-QULA1485 E1.77-QULA1485 F F1.76-14RD1730 F1.76-14RD1730 G G3.03-13RD1820 G3.03-13RD1820 H H3.09-12RD1711 H3.09-12RD1 711 J J3.70-11 RD1540 J3.70-11 RD1540 K K2.70-12LA1439 K2.70-12LA1439 L L2.10-NARD1339 L2.10-NARD1339 M M2.47-14RD1322 M2.47-14RD1322 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 2007 Land Use Census.

Locations are identified based upon the following protocol:

EXAMPLE: A1.4-1 6RD1525 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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 5

TABLE 3 2008 Land Use Census Milk and Garden Data SECTOR 2007 2008 2007 CLOSEST 2008 CLOSEST MILKING MILKING GARDEN GARDEN ANIMALS ANIMALS PRODUCING PRODUCING BROADLEAF BROADLEAF VEGETATION VEGETATION A None None None A4.91-OXRD1940 B None None B4.09-18RD1739 B3.53-QURD 1755 C None None C1.92-16RD1655 C3.16-QURD1712 D None None D3.00-16RD1829 D3.00-16RD1829 E None None None None F None None F2.44-RERD 1391 F2.44-RERD1391 G None None G3.77-12RD1831 G3.66-12RD1814 H None None H3.30-QURD1175 H3.30-QURD1175 J None None J3.80-11 RD1535 J3.80-11 RD1535 K None None K4.10-NARD1120 None L None None L2.39-NARD1309 L2.39-NARD1309 M None None M3.10-13LA1290 M3.78-LYRD1390 N None None N2.38-RODR9 N2.38-RODR9 P None None P2.76-HW751534 P2.99-SOST100 Q None None Q2.35-MILA1619 Q2.35-MILA1619 R None None None None NOTE: Underlined entries indicate changes from the 2007 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.

2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 6

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

• 20%

SECTOR (MI) (METERS) DIST D/Q DIST D/0 CALC RANKING A 4.91 7902 7000 6.95E-10 8000 5.61E-10 5.74E-10 4 6.89E-10 B 3.53 5681 5000 6.27E-10 6000 4.61E-10 5.14E-10 6 6.17E-10 C 3.16 5086 5000 2.77E-10 6000 2.03E-10 2.71E-10 11 3.25E-10 D 3.00 4828 4000 2.71E-10 5000 1.85E-10 2.OOE-10 13 2.40E-10 E 0 0 F 2.44 3927 3000 6.99E-10 4000 4.20E-10 4.40E-10 9 5.28E-10 G 3.66 5890 5000 4.70E-10 6000 3.46E-10 3.60E-10 10 4.32E-10 H 3.30 5311 5000 5.66E-10 6000 4.16E-10 5.19E-10 5 6.23E-10 J 3.80 6116 6000 4.62E-10 7000 3.43E-10 4.48E-10 8 5.38E-10 K 0 0 L 2.39 3846 3000 1.15E-09 4000 6.91E-10 7.62E-10 2 9.14E-10 M 3.78 6083 6000 2.56E-10 7000 1.90E-10 2.51E-10 12 3.01E-10 N 2.38 3830 3000 1.11E-09 4000 6.67E-10 7.42E-10 3 8.90E-10 P 2.99 4812 4000 6.23E-10 5000 4.24E-10 4.61E-10 7 5.53E-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 Originated by: Date: 12-10-2008 Verified by: Date: 12-10-2008 2008 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 7