ML13142A310

Operating Corp. - Annual Radiological Environmental Operating Report

ML13142A310
Person / Time
Site:	Wolf Creek
Issue date:	04/24/2013
From:	Westman M Wolf Creek
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RA 13-0053
Download: ML13142A310 (166)

Text

W$LF CREEK NUCLEAR OPERATING CORPORATION Michael J. Westman Manager Regulatory Affairs April 24, 2013 RA 13-0053 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: 2012 Annual Radiological Environmental Operating Report Gentlemen:

The purpose of this letter is to submit the enclosed 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, 2012, through December 31, 2012.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-8831 ext. 4009, or Mr. William Muilenburg, at (620) 364-8831, ext.

4511.

Sincerely, Michael J. Westman MJW/rlt

Enclosure:

2012 Annual Radiological Environmental Operating Report (165 pages) cc: A. T. Howell (NRC), w/e C. F. Lyon (NRC), w/e N. F. O'Keefe (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/HC/VET

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION 2012 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT F

April 15, 2013

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 I1l. Program Revisions/Changes 9 IV. Program Deviations 10 V. Interlaboratory Comparison Program 10 VI. Comparison to the Radioactive Effluent Release Program 10 Tables 12 Figures 21 Charts 26 Appendix A - Interlaboratory Comparison Program Results A-1 Appendix B - Summary Tables B-1 Appendix C - Individual Sample Results C-1 Air Particulate and Charcoal Filters C-1 Quarterly Air Particulate - Gamma C-13 Surface Water C-1 9 Ground Water C-27 Drinking Water C-43 Quarterly Drinking Water - Tritium C-51 Shoreline Sediment C-53 Fish C-57 Food/Garden C-63 Feed and Forage C-74 Bottom Sediment C-77 Aquatic Vegetation C-94 Terrestrial Vegetation C-98 Soil C-99 Deer C-100 Appendix D - Land Use Census Report D-1

LIST OF TABLES 1 Radiological Environmental Monitoring Program Description 12 2 Sample Location Identifiers, Distances (Miles) and Directions (Sectors) 17 3 OSL Dosimeter Results 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 mR per Standardized 90-day 28 Quarter 4 Historical 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 Cs-137 Activity in Bottom Sediment 32 ii

EXECUTIVE

SUMMARY

Plant-related activation, corrosion, or fission products were not detected during 2012 in airborne particulate and radioiodine filters, ground water, broadleaf vegetation, shoreline sediment, crops, aquatic vegetation, terrestrial vegetation, bottom sediment, or soil samples. Activation, corrosion or fission products attributable to plant operation were detected during 2012 in surface water, fish, drinking water, and deer samples.

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

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

INTRODUCTION The 2012 Annual Radiological Environmental Operating Report for Wolf Creek Generating Station (WCGS) covers the period from January 1 through December 31, 2012. 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 Effluent Release Program. The Interlaboratory Comparison Program results, a summary of results in the NRC Branch Technical Position specified format, the individual sample results, and the Land Use Census Report are included as appendices.

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

Landauer, Inc. processed the environmental optically stimulated luminescence (OSL) dosimeters. Table 1 identifies the exposure pathway/sample type, number of samples/sample locations, sample collection frequency and type/frequency of analysis. Table 2 lists the sample location identifiers, distances and directions 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.

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 1 of 32

A. Airborne Pathway Low volume air sampling pumps with digital flow meters continuously collected particulate and radioiodine samples on 47 mm glass fiber filters and charcoal canisters, respectively. The filters and charcoal canisters were changed out weekly. Gross beta analysis was performed on the air particulate filters. Air particulate filters were also analyzed quarterly for gamma emitting isotopes. Charcoal canisters were analyzed for 1-131.

Air samples were collected from six locations. The five indicator locations sampled included 2, 18, 32, 37 and 49. A control location near the intersection of 2 0 th Road and Yearling Road (location 53) was also sampled. Indicator locations are shown in Figure 1 and the control location is shown in Figure 5.

B. Direct Radiation Pathway Optically stimulated luminescence (OSL) dosimeters were used at 43 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. Three 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) and 53 (near the intersection of 2 0 th Road and Yearling Road).

C. Waterborne Pathway Water samples were analyzed to determine if 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. Four surface water samples from the Coffey County Lake Spillway (SP) location and four surface water samples from the John Redmond Reservoir (JRR) location were also analyzed for Fe-55. The waterborne pathway sample locations are shown in Figures 3 and 5.

Monthly grab samples of surface water were collected from the JRR control location and from the SP indicator location. The SP indicator location is located near the spillway of Coffey County Lake, formerly known as Wolf Creek Lake.

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

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

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 2 of 32

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

D. Ingestion Pathway Milk was not collected during the sample year. The Land Use Census did not identify any locations producing milk for human consumption within five miles of the plant.

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

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

Crop samples were obtained from two indicator locations (NR-D1 and NR-D2) downstream of the confluence of Wolf Creek and the Neosho River. One crop sample was obtained from control location NR-U1. Gamma isotopic analysis was performed on each sample. Crop sample locations are identified on Figure 5.

E. Additional Samples Collected (not required by ODCM)

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

Bottom sediment samples were collected from indicator locations at the Coffey County Lake discharge cove (DC), Environmental Education Area (EEA), Make-Up Discharge Structure (MUDS), Ultimate Heat Sink (UHS), Essential Service Water (ESW) channel, Stringtown Cemetery (SC) and the control location (JRR). Gamma isotopic analyses were performed on the bottom sediment samples. Samples obtained from DC, ESW and UHS were also analyzed for Fe-55. Some of the bottom sediment samples were collected as part of a cooperative sampling effort with the Kansas Department of Health and Environment (KDHE). The sample locations are identified on Figure 3.

Shoreline sediment samples were collected from indicator locations EEA and SC. Gamma isotopic analyses were performed on the samples. These samples were collected as part of a cooperative sampling effort with the KDHE. The sample locations are identified on Figure 3.

Aquatic vegetation was collected from indicator locations DC ALT, EEA, MUDS and SC.

Gamma isotopic analyses were performed on the aquatic vegetation samples. These samples were collected as part of a cooperative sampling effort with the KDHE. The sample locations are identified on Figure 3.

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 3 of 32

Terrestrial vegetation (grass) was sampled from the EEA indicator location. Gamma isotopic analysis was performed on the grass sample. This sample was collected as part of a cooperative sampling effort with the KDHE. The sample location is identified on Figure 4.

Soil was sampled from the EEA indicator location. Gamma isotopic analysis was performed on the soil sample. This sample was collected as part of a cooperative sampling effort with the KDHE. The sample location is identified on Figure 4.

A deer was sampled from indicator location A1.5. 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 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.

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; the gross beta values peak in the winter months (December or January) and decrease to a low point in the spring months (May or June).

This trend is expected and is attributed to seasonal meteorological changes, i.e., changes in prevailing winds and precipitation.

The gross beta results of 2012 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 2012 weekly gross beta analyses range for indicator locations was 0.009 to 0.064 pCi/m 3. The 2012 weekly gross beta analyses range was within the 1983 and 1984 pre-operational range. Additionally, the annual mean for indicator locations for 2012 (0.029 pCi/m 3) was 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 2012 (0.029 pCi/m 3) was the same as the annual mean of the control location (0.029 pCi/m 3). The indicator location with the highest gross beta annual mean was location 49 (0.031 pCi/mi ) and was slightly higher than the annual mean of the control location (0.029 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 2012, the range for Be-7 detected activity was 0.052 to 0.105 pCi/m 3 for indicator locations and the annual mean for indicator locations was 0.082 pCi/m 3. The control location annual mean for Be-7 detected activity (0.090 pCi/m 3) was slightly higher than the annual mean of the indicator locations (0.082 pCi/m 3).

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

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 4 of 32

The ODCM required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2012 in airborne particulate and radioiodine filters and no unusual trends were noted.

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

The annual mean of indicator locations in 2012 was 19.5 mR per standardized 90-day quarter.

The annual mean of the control locations in 2012 was 18.6 mR per standardized 90-day quarter.

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

The indicator location with the highest annual mean was 47 (24.8 mR per standardized 90-day quarter). The close proximity of location 47 to the Radwaste Building is likely the reason direct radiation levels are higher at this location.

Based upon Condition Report 00027489, improvements were made in measuring and subtracting transit dose in 2010. As expected, the OSL results have increased since 2010.

Chart 3 visibly displays the increase of the OSL results. Chart 3 also displays how closely the indicator and control location OSL dosimeter results are for 2012.

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

C. Waterborne Pathway (1) Surface Water Tritium, attributable to WCGS operation, was detected in surface water samples collected from the Coffey County Lake Spillway (SP) indicator location during 2012. The annual mean for detected tritium activity at the SP location was 11,435 pCi/L and the range was 10,037 to 12,545 pCi/L. The detected tritium activity was below the 30,000 pCi/L ODCM reporting level.

Chart 5 illustrates the yearly averages of surface water tritium data for the spillway location.

Chart 5 indicates the average tritium concentration of the Coffey County Lake spillway location may have reached equilibrium. 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.

The ODCM required lower limits of detection were met. Radionuclides were not detected by the gamma isotopic analyses or by Fe-55 analyses.

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 5 of 32

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

(2) Ground Water ODCM required lower limits of detection were met for 1-131, tritium and gamma isotopic analyses. Radioactivity was not detected in any ground water samples. No unusual trends were noted. Plant-related activation, corrosion or fission products were not detected during 2012 in ground water samples.

(3) Drinking Water Gross beta activity was detected in drinking water samples collected from the indicator location and in samples collected from the control location. The annual mean of the indicator location gross beta activity (3.0 pCi/L) was slightly higher when compared to the annual mean of the control location gross beta activity (2.8 pCi/L). The 2012 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.

Tritium activity (222 pCi/L) was detected in the first quarter of 2012 at the indicator location.

The detected tritium activity was well below the 20,000 pCi/L ODCM reporting level. Condition Report 00052766 concluded due to low Neosho River flows, coupled with wave overlap discharges from Coffey County Lake, WCGS was a plausible source. Tritium activity was not detected in 2012 at the control location. In 1984 (pre-operational), tritium activity was not detected in any drinking water samples.

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

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

ODCM required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2012 in shoreline sediment samples and no unusual trends were noted.

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

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 6 of 32

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

Fish samples were also analyzed for tritium. Fish samples collected from Coffey County Lake had tritium activity detected (7,728 pCi/kg annual mean). The detected tritium activity was attributable to plant operation. An adult consuming 21 kilograms of fish, at the maximum measured tritium concentration (8,948 pCi/kg), would receive a committed effective dose equivalent of 0.012 mRem.

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

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

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

No other radionuclides were detected in broadleaf vegetation during the year. The ODCM required lower limits of detection were met and no unusual trends were noted. Plant-related activation, corrosion, or fission products were not detected during 2012 in broadleaf vegetation samples.

(4) Crop Samples Gamma analysis detected naturally occurring K-40 activity to be present in the samples collected from the indicator locations and in the sample collected from the control location.

K-40 activity was also detected during pre-operational crop monitoring. K-40 was the only activity detected in the crop samples. The ODCM required lower limits of detection were met.

Plant-related activation, corrosion, or fission products were not detected during 2012 in crop samples and no unusual trends were noted.

E. Additional Samples Collected (not required by ODCM)

(1) Bottom Sediment Gamma analysis detected naturally occurring K-40 activity to be present in the samples collected from the indicator locations and in the samples collected from the control location.

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

Cs-137 activity was detected in nine out of the seventeen samples obtained from indicator locations (range 26 to 126 pCi/kg, dry). Cs-137 activity was also detected in both samples obtained from the control location (range 45 to 122pCi/kg, dry).

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 7 of 32

Cs-137 activity was detected in pre-operational samples. The Cs-137 activity detected in 2012 indicator bottom sediment samples was 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 38 to 462 pCi/kg.)

The detected Cs-1 37 activity in the samples collected from the indicator locations was likely due to fallout since the measured activity is within the decay corrected range of pre-operational Cs-1 37 detected activity and Cs-1 37 activity has also been detected in samples collected at the control location.

Chart 7 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 7 trendline indicates Cs-137 activity detected at the JRR control location has also been decreasing. Chart 7 also displays that in recent years, the detected Cs-1 37 activity for the JRR and DC sample locations overlap.

Fe-55 activity was not detected in the fourteen samples obtained from indicator locations. No other radionuclides were detected in bottom sediment samples.

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

(2) Aquatic Vegetation Gamma analyses of aquatic vegetation samples obtained from indicator locations detected naturally occurring gamma emitters Be-7 and K-40. Be-7 and K-40 activity were also detected during pre-operational monitoring.

No other radionuclides were detected. Plant-related activation, corrosion, or fission products were not detected during 2012 in aquatic vegetation samples and no unusual trends were noted.

(3) Shoreline Sediment Naturally occurring K-40 activity was detected in the shoreline sediment samples obtained from the EEA and SC indicator locations. K-40 activity was also detected during pre-operational monitoring.

Cs-137 activity (234.3 pCi/kg, dry) was detected in the shoreline sediment sample obtained from the EEA indicator location and in the sample obtained from the SC indicator location (75.8 pCi/kg, dry). Cs-137 activity was also detected in pre-operational shoreline sediment samples. Cs-137 activity detected in shoreline sediment samples collected from the DC location from 1982 to 1984 was in the range of 224 to 437 pCi/kg, dry. The decay corrected range of pre-operational Cs-137 activity detected is approximately 119 to 225 pCi/kg, dry. The detected Cs-137 activity in the shoreline sediment samples was likely due to fallout since the results are nearly within the pre-operational decay corrected range. Additionally, Cs-137 activity is routinely detected in soil and sediment samples collected from the control locations.

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

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 8 of 32

(4) Terrestrial Vegetation Naturally occurring Be-7 and K-40 activity were detected in a terrestrial vegetation indicator location sample collected in 2012. No other radionuclides were detected. Plant-related activation, corrosion or fission products were not detected during 2012 in terrestrial vegetation samples and no unusual trends were noted.

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

Cs-137 activity (155 pCi/kg) was detected in the EEA indicator location soil sample. Data was reviewed for soil samples collected pre-operationally. The detected Cs-137 activity range from February of 1985 was 255 to 2,160 pCi/kg, dry. The decay corrected range of pre-operational Cs-137 activity detected in soil is approximately 137 to 1,160 pCi/kg. The detected Cs-137 activity in soil sampled in 2012 is within the decay corrected pre-operational range and is likely due to fallout.

Plant-related activation, corrosion, or fission products were not detected during 2012 in this soil sample and no unusual trends were noted.

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

The deer sample was also analyzed for tritium. The detected tritium was 916 pCi/kg. The detected tritium activity was attributable to plant operation.

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

Ill. PROGRAM REVISIONS/CHANGES Based upon Condition Report 00051888, the descriptions of the air monitoring stations were revised in AP 07B-004, Offsite Dose Calculation Manual (RadiologicalEnvironmentalMonitoring Program), to be clearer.

For personnel safety reasons, dosimeter locations #4 and #51 were moved within the same sector.

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 9 of 32

IV. PROGRAM DEVIATIONS Drinking Water Samples Drinking water was not continuously collected at the Burlington control sample location during the 08-06-2012 to 09-04-2012 sample period due to an equipment malfunction (ruptured tube).

Approximately 2-1/2 gallons of water was collected before the sampler stopped operating. The composited sample and a grab sample were submitted to the vendor lab for analysis. The drinking water sampler was repaired on the same day of discovery. Condition Report 00056913 was generated to document the condition.

Drinking water was not continuously collected at the Iola indicator sample location during 09-28-2012 to 10-01-2012 since the sampler intake tubing was not moved following a water plant line-up change. Sufficient water was collected for the monthly composite sample. The drinking water sampler intake tubing was moved on the same day of discovery to a bay that contained water. Condition Report 00058066 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 During 2012, Environmental, Inc., Midwest Laboratory was contracted to perform radiological analysis of environmental samples for WCNOC. The lab participated in the intercomparison studies administered by Environmental Resources Associates. Appendix A is the Interlaboratory Comparison Program Results for Environmental, Inc., Midwest Laboratory.

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

VI. COMPARISON TO THE RADIOACTIVE EFFLUENT 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 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 0,194 mRem for 2012.

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 10 of 32

Using sample data obtained from the REMP, an adult drinking 2 liters per day of surface water from Coffey County Lake, using the average tritium activity (11,435 pCi/L), would receive a committed effective dose equivalent of 0.522 mRem per year. For an adult eating 21 kg of fish per year from Coffey County Lake, using the average tritium activity (7,728 pCi/kg), would receive a committed effective dose equivalent of 0.010 mRem per year. Based upon the REMP results, the dose from both pathways was calculated to be 0.532 mRem per year.

It should be noted Coffey County Lake is not used as 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.

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 11 of 32

TABLE I 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 and one supplemental analysis composite location (Locations 2, (by location) 18, 37 or 49 on Figure 1)

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

Sample from a control location 9.5 to 18.5 miles distant in a low ranked D/Q sector (Location 53 on Figure 5) 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 12 of 32

TABLE I (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 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 13 of 32

TABLE I (Cont.)

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

(Imany locations are niear a residence),

Schools (Locations 23 52), Environmental E-ducation Area (44),

C.CL Public Fishing Akrea (46) and in two a reas to serve as c ontrol stations 10-20 nniles distant from the s ite (Locations 39 and 5 3 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 analysis and likely to be affected. tritium 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 upgradient of the site (Location B-12 on Figure 3).

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 14 of 32

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.

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 15 of 32

TABLE I (Cont.)

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

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

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

Irrigated Crops Sample of crops At time of harvest Gamma isotopic irrigated with water analysis on edible from the Neosho River portions downstream of the Neosho River - Wolf Creek confluence (locations will vary from year to year, e.g.,

Location NR-D1 and NR-D2 on Figure 5).

2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 16 of 32

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

Sample Type Location Distance from Direction Sector Identifier Reactor Air Particulates and Radioiodine 2 2.7 N A 18 3.0 SSE H 32 3.1 WNW P 37 2.0 NNW R 49 0.8 NNE B 53 10.8 ENE D Dosimeters 1 1.4 N A 2 2.7 N A 4 4.0 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 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 17 of 32

TABLE 2 (Cont.)

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

Sample Type Location Distance from Direction Sector Identifier Reactor Dosimeters 46 1.6 WNW P 47 0.16 S J 49 0.8 NNE B 50 3.6 ENE D 51 4.3 S J 52 3.6 SW L 53 10.8 ENE D Surface Water JRR 3.7 W N SP 3.2 SSE H Ground Water B-12 1.9 NNE B C-10 2.7 W N C-49/L-49 2.8 SW L F-1 2.5 ESE F G-2 3.6 SE G J-1 3.8 S J J-2 4.3 S J Drinking Water BW-15 3.9 SW L 1O-DW 26.1 SSE H Shoreline Sediment DC 0.8 WNW P EEA 3.0 NNW R JRR 3.6 W N SC 0.8 NNW R Fish CCL 0.6 E to NNW E to R JRR 3.7 W N Food/Garden B-1 0.8 NNE B D-2 14.8 ENE D H-2 3.0 SSE H N-1 2.4 W N Q-6 2.4 NW Q Crops NR-D1 8.9 S J NR-D2 11.5 S J NR-U1 4.0 SSW K Bottom Sediment DC 0.9 WNW P EEA 3.0 NNW R ESW 0.5 E E JRR 3.7 W N MUDS 1.5 WNW P SC 0.8 NNW R UHS 0.6 E E Aquatic Vegetation DC ALT 1.5 NW Q EEA 3.0 NNW R MUDS 1.5 WNW P SC 0.8 NNW R MUDS 1.5 WNW P 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 18 of 32

TABLE 2 (Cont.)

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

Sample Type Location Distance from Direction Sector Identifier Reactor

-Terrestrial Vegetation EEA 3.0 NNW R Soil EEA 3.0 NNW R Meat (Deer) A1.5 1.5 N A 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 19 of 32

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

Location Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 Total Annual (mR) (mR) (mR) (mR) Exposure (mR) 1 17.6 23.4 23.7 20.4 85.1 2 16.6 19.9 20.6 21.5 78.6 4 20.5 22.3 23.4 21.9 88.1 5 17.1 19.4 19.6 18.6 74.7 7 18.7 18.7 20.3 18.1 75.8 8 19.9 22.8 23.2 24.0 89.9 9 16.8 17.7 19.6 18.6 72.7 11 19.6 20.9 21.2 17.6 79.3 12 19.3 22.3 21.0 20.6 83.2 13 19.1 21.8 21.0 22.6 84.5 14 19.9 20.3 24.4 21.6 86.2 15 17.2 19.6 21.7 21.1 79.6 16 14.4 20.9 20.7 17.9 73.9 17 15.8 17.7 19.6 21.6 74.7 18 18.7 19.3 19.6 21.1 78.7 19 18.6 20.5 24.7 19.8 83.6 20 19.1 21.0 23.6 18.8 82.5 22 22.0 24.3 22.6 20.1 89.0 23 21.5 19.6 21.7 19.1 81.9 24 16.3 21.0 22.2 18.1 77.6 25 15.2 17.3 17.7 17.3 67.5 26 16.2 16.5 21.0 16.9 70.6 27 17.4 21.5 21.6 19.8 80.3 29 13.5 16.8 16.6 14.8 61.7 30 17.6 21.4 20.0 22.0 81.0 32 17.7 21.1 21.7 21.1 81.6 34 16.7 21.2 21.0 20.1 79.0 35 18.2 21.4 21.4 20.1 81.1 36 15.0 20.5 21.2 20.1 76.8 37 18.1 16.5 18.5 20.1 73.2 38 19.5 22.0 17.7 20.3 79.5 39 14.7 16.5 19.6 17.2 68.0 41 14.7 19.3 22.6 18.4 75.0 42 11.0 12.8 13.5 14.7 52.0 43 10.0 13.8 14.3 13.2 51.3 44 17.6 21.1 20.4 18.6 77.7 46 16.8 19.1 22.0 18.1 76.0 47 19.9 27.7 27.9 23.8 99.3 49 17.6 19.7 17.4 19.6 74.3 50 19.9 25.0 20.7 21.6 87.2 51 14.9 21.9 21.0 17.8 75.6 52 16.7 21.9 22.2 22.3 83.1 53 20.1 22.0 22.2 16.7 81.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 20 of 32

FIGURE 1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 21 of 32

FIGURE 2 DIRECT RADIATION PATHWAY SAMPLING LOCATIONS

• = DOSIMETER LOCATIONS 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 22 of 32

FIGURE 3 WATERBORNE PATHWAY SAMPLING LOCATIONS

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

• = BOTTOM SEDIMENT I = AQUATIC VEGETATION 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 23 of 32

FIGURE 4 INGESTION PATHWAY SAMPLING LOCATIONS A = FISH (JRR) I= BROADLEAF VEGETATION *= SOIL

-= FISH (CCL) TERRESTRIAL VEGETATION =DEER 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 24 of 32

FIGURE 5 A

• = Dosimeter

• = AIRBORNE PARTICULATE &RADIOIODINE 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 25 of 32

CHART I 2012 Airborne Gross Beta Weekly Results 0.070 0.060

() 0.050 E

.2 0.040 CL 0

0.030 20l) 0.020

(.9 0.010 0.000 0 4 8 12 16 20 24 28 32 36 40 44 48 52 Week Number m Location 2

• Location 18 + Location 32 A Location 37 M Location 49 --- Location 53 (Control) 2012 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 26 of 32

CHART 2 0.060 0.050 0.040 a)

E 0

0 E 0.030 C/

0.020 0.010 0 '1P 0 0 0 t~\0

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

Smoothed Avg. Control Location (48) -Smoothed Avg. Control Location (53) 2012 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 27 of 32

CHART 3 OSL Dosimeters - Indicator and Control Locations mR per Standardized 90-Day Quarter 24.0 22.0 20.0 18.0 16.0 14.0 12.0 10.0 8.0 6.0 4.0 Year/Quarter

- Indicator Locations Standardized 90-Day Quarter (mR)

--- Control Locations Standardized 90-Day Quarter (mR) 2012 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 28 of 32

CHART 4 Historical TLD Nearsite Locations and Control Locations 32.0 30.0 28.0 26.0 24.0 22.0 20.0 18.0 16.0 14.0 12.0 I 1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

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

-Moving Avg. of Nearsite Locations (2 period) - - - Moving Avg. of Control Locations (2 period) 2012 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 29 of 32

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

-L 6,000 4,000 2,000 0 ý-

1987 1992 1997 2002 2007 2012 S--*-- Yearly Average of Spillway Location - Polynomial Trendline]

2012 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 30 of 32

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

4 co 3

(D 2

1 NO N> NN BW15 (Control) - -IODW (Indicator) 2012 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 31 of 32

CHART 7 Detected Cs-1 37 Activity in Bottom Sediment 1,000 900 800 700 600

_0 500 400 300 200 100 0

O C CO CNO I- M C( V N M 0 00 "0)0"M ) 000 CO qT" LO . N-N-CO M CO 0)' --

0- 000) C- 0 0 0 0 0 CO 0) 0 0 0 0 -( 0 0 0 0 0 0 LO 04 M1 M, (01 W4 M4 M M LO rN C M . M. 0' 0 0'- (O(N N '. 0 M (J 0()

M,- -

LO 0 0s (00) (0 IT (00 LO 0)-M ' C-'-(0 0 LO0- O C ((0 M0

• DC Cs-137

• JRR Cs-137 - Polynomial Trendline (DC) Polynomial Trendline (JRR) 2012 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 32 of 32

-AT'Environmental, Midwest Laboratory Inc.

700 Landwehr Road

• Northbrook.IL 60062-2310 phone (847) 564-0700

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

January, 2012 through December, 2012

Appendix A Interlaboratory 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.

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

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

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

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

Complete analytical data for duplicate analyses is available upon request.

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

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

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

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

Al

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

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

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

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

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

> 100 pCi/liter 5% of known value Tritium _54,000 pCi/liter + lo =

0 0 933 169.85 x (known) ,

> 4,000 pCi/liter 10% of known value Radium-226,-228 -0.1 pCi/liter 15% of known value Plutonium > 0.1 pCi/liter, gram, or sample 10% of known value Iodine-131, 5 55 pCi/liter 6 pCi/liter Iodine-129b > 55 pCi/liter 10% of known value Uranium-238, < 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 a From EPA publication, "Environmental Radioactivity Laboratory Intercomparison Studies Program, Fiscal Year, 1981-1982, EPA-600/4-81-004.

b Laboratory limit.

A2

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

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Result b Result c Limits Acceptance ERW-1 783 04/09/12 Sr-89 62.2 +/- 6.0 58.5 46.9 - 66.3 Pass ERW-1783 04/09/12 Sr-90 33.7 +/- 2.1 37.4 27.4 - 43.1 Pass ERW-1786 04/09/12 Ba-133 75.7 +/- 4.1 82.3 69.1 - 90.5 Pass ERW-1786 04/09/12 Co-60 71.9 +/- 4.0 72.9 65.6 - 82.6 Pass ERW-1 786 04/09/12 Cs-134 70.0 +/- 4.3 74.2 60.6 -81.6 Pass ERW-1786 04/09/12 Cs-137 151.5 +/- 6.1 155.0 140.0 - 172.0 Pass ERW-1 786 04/09/12 Zn-65 108.3 +/- 89.0 105.0 94.5 - 125.0 Pass ERW-1789 04/09/12 Gr. Alpha 55.0 +/- 2.4 62.9 33.0 - 78.0 Pass ERW-1789 d 04/09/12 Gr. Beta 76.2 +/- 1.8 44.2 29.6 -51.5 Fail ERW-1795 04/09/12 Ra-226 6.4 +/- 0.4 5.7 4.3 - 6.9 Pass ERW-1795 04/09/12 Ra-228 5.4 +/- 1.2 4.6 2.7 - 6.3 Pass ERW-1795 04/09/12 Uranium 56.2 +/- 2.6 61.5 50.0 - 68.2 Pass ERW-1798 04/09/12 H-3 16023 +/-355 15800 13800 -17400 Pass ERW-6283 10/05/12 Sr-89 41.5 +/- 4.1 39.1 29.7 - 46.1 Pass ERW-6283 10/05/12 Sr-90 19.7 +/- 1.6 20.1 14.4 - 23.8 Pass ERW-6286 10/05/12 Ba-133 82.7 +/- 4.4 84.8 71.3 -93.3 Pass ERW-6286 10/05/12 Co-60 77.2 +/- 3.7 78.3 70.5 - 88.5 Pass ERW-6286 10/05/12 Cs-134 74.4 +/- 1.5 76.6 62.6 - 84.3 Pass ERW-6286 10/05/12 Cs-1 37 183.0 +/- 6.2 183.0 165.0 -203.0 Pass ERW-6286 10/05/12 Zn-65 211.0 +/-9.9 204.0 184.0 - 240.0 Pass ERW-6288 10/05/12 Gr. Alpha 47.0 +/- 2.3 58.6 30.6 - 72.9 Pass ERW-6288 10/05/12 Gr. Beta 33.4 +/- 1.2 39.2 26.0 - 46.7 Pass ERW-6290 10/05/12 1-131 23.3 +/- 1.0 24.8 20.6 - 29.4 Pass ERW-6295e 10/05/12 Ra-226 17.5 +/-0.7 15.0 11.2 -17.2 Fail ERW-6295e 10/05/12 Ra-228 7.4 +/- 1.5 4.6 2.7 -6.2 Fail ERW-6295 10/05/12 Uranium 61.2 +/- 1.8 62.5 50.8 - 69.3 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

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

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

d Sample dilution problem suspected. A new dilution was prepared and the sample reanalyzed.

Result of reanalysis, 38.3 +/- 1.3 pCi/L.

e Results of reanalyses (pCi/L): Ra-226, 16.51 +/- 0.73 Ra-228, 4.85 +/- 1.11. A new test was ordered from Environmental Resources Associates, results will be updated for first quarter, 2013.

Al-1

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

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

2012-1 2/7/2012 30 cm. 74.87 87.22 +/- 2.86 52.41 - 97.33 Pass 2012-1 2/712012 40 cm. 42.12 53.70 +/- 4.53 29.48 - 54.76 Pass 2012-1 2/7/2012 50 cm. 26.95 33.04 +/- 1.96 18.87 - 35.04 Pass 2012-1 2/7/2012 70 cm. 13.75 13.26 +/- 1.15 9.63 - 17.88 Pass 2012-1 2/7/2012 75 cm. 11.98 13.38 +/- 1.68 8.39 - 15.57 Pass 2012-1 2/7/2012 80 cm. 10.53 11.27 +/- 0.95 7.37 - 13.69 Pass 2012-1 2/7/2012 90 cm. 8.32 7.79 +/- 0.83 5.82 - 10.82 Pass 2012-1 2/7/2012 100 cm. 6.74 5.91 +/- 0.25 4.72 - 8.76 Pass 2012-1 2/7/2012 110 cm. 5.57 4.63 +/- 0.83 3.90 - 7.24 Pass 2012-1 2/7/2012 120 cm. 4.68 3.96 +/- 1.68 3.28 - 6.08 Pass 2012-1 2/7/2012 150 cm. 2.99 2.41 +/- 0.08 2.09 - 3.89 Pass 2012-1 2/7/2012 180 cm. 2.08 2.02 +/- 0.25 1.46 -2.70 Pass Environmental, Inc.

2012-2 9/11/2012 40 cm. 33.75 43.74 +/- 1.31 23.63 - 43.88 Pass 2012-2 9/11/2012 50 cm, 21.6 25.37 +/- 0.82 15.12 -28.08 Pass 2012-2 9/11/2012 60 cm. 15 16.63 +/- 0.45 10.50 - 19.50 Pass 2012-2 9/11/2012 70 cm. 11.02 10.58 +/- 0.20 7.71 - 14.33 Pass 2012-2 9/11/2012 80 cm. 8.44 8.55 +/- 1.18 5.91 - 10.97 Pass 2012-2 9/11/2012 90 cm, 6.67 5.75 +/- 0.33 4.67 - 8.67 Pass 2012-2 9/11/2012 100 cm. 5.4 4.44 +/- 0.22 3.78 - 7.02 Pass 2012-2 9/11/2012 110 cm. 4.46 3.85 +/- 0.05 3.12 -5.80 Pass 2012-2 9/11/2012 120 cm. 3.75 3.03 +/- 0.71 2.63 - 4.88 Pass 2012-2 9/11/2012 150 cm. 2.4 1.82 +/- 0.10 1.68-3.12 Pass 2012-2 9/11/2012 180 cm. 1.67 1.19 +/- 0.34 1.17 -2.17 Pass A2-1

TABLE A-3. In-House "Spiked" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 c Activity Limits d Acceptance SPW-41824 2/15/2012 Ra-228 24.85 +/- 2.14 28.75 20.13 - 37.38 Pass W-22712 2/27/2012 Gr. Alpha 14.59 +/- 0.34 20.00 10.00 - 30.00 Pass W-22712 2/27/2012 Gr. Alpha 43.57 +/- 0.40 41.70 20.85 - 62.55 Pass SPAP-1032 3/5/2012 Cs-134 7.06 +/- 1.71 5.26 0.00 - 15.26 Pass SPAP-1032 3/5/2012 Cs-137 102.63 +/- 3.13 104.24 93.82 - 114.66 Pass SPAP-1034 3/5/2012 Gr. Beta 44.30 +/- 0.11 46.88 28.13 - 65.63 Pass SPW-1036 3/5/2012 Cs-134 43.23 +/- 3.84 39.42 29.42 - 49.42 Pass SPW-1036 3/5/2012 Cs-137 57.44 +/- 4.60 52.12 42.12 -62.12 Pass SPW-1036 3/5/2012 Sr-90 60.51 +/- 1.93 61.52 49.22 - 73.82 Pass SPMI-1038 3/5/2012 Cs-1 34 37.79 +/- 4.06 39.42 29.42 - 49.42 Pass SPMI-1038 3/5/2012 Cs-137 54.75 +/- 5.09 52.12 42.12 - 62.12 Pass SPW-1045 3/5/2012 H-3 68022 +/- 746 69048 55238 - 82858 Pass SPW-1047 3/5/2012 Ni-63 217.10 +/- 3.64 206.64 144.65 -268.63 Pass SPW-1049 3/5/2012 C-14 3858.90 +/- 12.79 4738.80 2843.28 - 6634.32 Pass W-31412 3/14/2012 Ra-226 13.13 +/- 0.36 16.70 11.69 -21.71 Pass SPW-1520 3/23/2012 U-238 45.67 +/- 2.02 41.70 29.19 -54.21 Pass SPW-41825 4/10/2012 Ra-228 28.48 +/- 2.51 28.35 19.85 - 36.86 Pass WW-1547 4/16/2012 Ba-133 18.99 +/- 4.67 26.70 16.70 - 36.70 Pass WW-1547 4/16/2012 Cs-134 9.28 +/- 2.82 8.68 0.00 - 18.68 Pass WW-1547 4/16/2012 Cs-137 27.77 +/- 4.49 29.70 19.70 - 39.70 Pass W-51712 5/17/2012 Ra-226 17.29 +/- 0.43 16.70 11.69 -21.71 Pass W-61112 6/11/2012 Gr. Alpha 22.16 +/- 0.45 20.00 10.00 - 30.00 Pass W-61112 6/11/2012 Gr. Beta 43.57 +/- 0.40 45.20 35.20 - 55.20 Pass SPAP-4418 7/25/2012 Gr. Beta 43.74 +/- 0.11 46.50 27.90 -65.10 Pass SPAP-4420 7/25/2012 Cs-134 4.54 +/- 0.73 4.60 2.76 - 6.44 Pass SPAP-4420 7/25/2012 Cs-137 104.70 +/- 2.77 103.30 92.97 - 113.63 Pass SPMI-4422 7/25/2012 Co-60 31.43 +/- 2.12 31.62 21.62 -41.62 Pass SPMI-4422 7/25/2012 Cs-134 16.50 +/- 1.17 16.15 6.15 -26.15 Pass SPMI-4422 7/25/2012 Cs-137 29.60 +/- 2.61 26.64 16.64 - 36.64 Pass SPMI-4422 7/25/2012 Sr-90 31.60 +/- 1.35 30.47 24.38 - 36.56 Pass SPW-4424 7/25/2012 Co-60 38.52 +/- 1.76 37.95 27.95 - 47.95 Pass SPW-4424 7/25/2012 Cs-137 33.23 +/- 2.27 32.01 22.01 - 42.01 Pass SPW-4424 7/25/2012 Sr-90 36.56 +/- 1.58 40.60 32.48 - 48.72 Pass SPF-4426 7/25/2012 Cs-134 947.50 +/- 42.50 1025.00 922.50 - 1127.50 Pass SPF-4426 7/25/2012 Cs-137 2692.00 +/- 62.40 2480.00 2232.00 - 2728.00 Pass SPW-4428 7/25/2012 C-14 4325.70 +/- 15.80 4738.80 2843.28 - 6634.32 Pass SPW-4430 7/25/2012 H-3 70119.40 +/- 773.40 67570.00 54056.00 - 81084.00 Pass SPW-4432 7/25/2012 Ni-63 187.20 +/- 3.85 206.80 144.76 - 268.84 Pass W-81712 8/17/2012 Ra-226 14.94 +/- 0.40 16.70 11.69 -21.71 Pass SPW-5407 8/29/2012 U-238 42.95 +/- 0.11 41.70 29.19 -54.21 Pass SPW-18022 9/10/2012 Ra-228 29.03 +/- 2.80 28.21 19.75 - 36.67 Pass A3-1

TABLE A-3. In-House "Spiked" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 c Activity Limitsd Acceptance W-91012 9/10/2012 Gr. Alpha 19.95 +/- 0.42 20.00 10.00 -30.00 Pass W-91012 9/10/2012 Gr. Beta 43.47 +/- 0.40 45.20 35.20 - 55.20 Pass W-100312 10/3/2012 Gr. Alpha 19.95 +/- 0.41 20.00 10.00 -30.00 Pass W-100312 10/3/2012 Gr. Beta 44.21 +/- 0.40 45.20 35.20 - 55.20 Pass W-101812 10/18/2012 Ra-226 18.80 +/- 0.43 16.70 11.69 -21.71 Pass ESO-7235 12/6/2012 Sr-90 138.79 +/- 2.67 161.05 128.84 - 193.26 Pass SPW-7753 12/6/2012 U-238 45.55 +/- 5.05 41.70 29.19 -54.21 Pass SPW-18023 12/18/2012 Ra-228 31.59 +/- 2.99 25.98 18.19 -33.77 Pass 8 Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/mr3 ), and solid samples (pCi/g).

Laboratory codes : W (Water), MI (milk), AP (air filter), SO (soil), VE (vegetation), CH (charcoal canister), F (fish), U (urine).

CResults are based on single determinations.

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

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

A3-2

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

SPW-41814 Water 2/15/2012 Ra-228 0.65 0.49 +/- 0.36 2 W-22712 Water 2/27/2012 Gr. Alpha 0.42 -0.04 +/- 0.29 1 W-22712 Water 2/27/2012 Gr. Beta 0.74 -0.54 +/- 0.50 3.2 SPAP-1031 Air Filter 3/5/2012 Cs-134 1.89 - 100 SPAP-1031 Air Filter 3/5/2012 Cs-137 1.16 - 100 SPAP-1033 Air Filter 3/5/2012 Gr. Beta 0.003 0.013 +/- 0.003 0.01 SPW-1035 Water 3/5/2012 Cs-134 2.40 - 10 SPW-1035 Water 3/5/2012 Cs-137 2.88 - 10 SPW-1035 Water 3/5/2012 1-131(G) 2.35 - 20 SPW-1035 Water 3/5/2012 Sr-90 0.60 -0.11 +/- 0.26 1 SPMI-1037 Milk 3/5/2012 Cs-134 2.85 - 10 SPMI-1037 Milk 3/5/2012 Cs-137 3.73 - 10 SPMI-1037 Milk 3/5/2012 1-131(G) 3.24 - 20 SPW-1044 Water 3/5/2012 H-3 146.10 37.10 +/- 74.40 200 SPW-1046 Water 3/5/2012 Ni-63 19.07 8.30 +/- 11.79 20 SPW-1048 Water 3/5/2012 C-14 5.70 2.99 +/- 3.04 200 SPW-1166 water 3/9/2012 C-14 6.79 1.11 200 W-31412 Water 3/14/2012 Ra-226 0.034 0.043 +/- 0.027 1 SPW-1521 Water 3/23/2012 U-238 0.10 0.09 +/- 0.11 1 W-51712 Water 4/24/2012 Ra-226 0.04 0.04 +/- 0.03 1 W-61112 Water 6/11/2012 Gr. Alpha 0.47 -0.14 +/- 0.32 1 W-61112 Water 6/11/2012 Gr. Beta 0.71 0.29 +/- 0.51 3.2 SPW-41815 Water 7/7/2011 Ra-228 0.77 0.52 +/- 0.42 2 SPAP-4417 Air Filter 7/25/2012 Gr. Beta 0.001 0.021 +/- 0.003 0.01 SPMI-4421 Milk 7/25/2012 Co-60 4.29 - 10 SPMI-4421 Milk 7/25/2012 Cs-134 3.58 - 10 SPMI-4421 Milk 7/25/2012 Cs-137 4.60 - 10 SPMI-4421 Milk 7/25/2012 Sr-90 0.45 0.53 +/- 0.27 1 SPW-4423 Water 7/25/2012 Co-60 1.88 - 10 SPW-4423 Water 7/25/2012 Cs-134 2.38 - 10 SPW-4423 Water 7/25/2012 Cs-137 2.80 - 10 SPW-4423 water 7/25/2012 Sr-90 0.45 0.08 +/- 0.22 1 SPF-4425 Fish 7/25/2012 Co-60 6.74 - 100 SPF-4425 Fish 7/25/2012 Cs-134 7.47 - 100 SPF-4425 Fish 7/25/2012 Cs-137 9.62 - 100 SPW-4427 Water 7/25/2012 C-14 10.93 3.54 +/- 5.84 200 SPW-4431 Water 7/25/2012 Ni-63 19.00 5.50 +/- 11.70 20 W-81712 Water 8/17/2012 Ra-226 0.038 0.035 +/- 0.030 1 SPW-5408 Water 8/29/2012 U-238 0.039 0.015 +/- 0.057 1 A4-1

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

SPW-18032 Water 9/10/2012 Ra-228 0.78 0.85 +/- 0.46 2 W-91012 Water 9/10/2012 Gr. Alpha 0.42 0.027 +/- 0.29 1 W-91012 Water 9/10/2012 Gr. Beta 0.75 -0.13 +/- 0.52 3.2 W-100312 Water 10/3/2012 Gr. Beta 0.77 -0.32 +/- 0.53 3.2 W-100312 Water 10/3/2012 Gr. Beta 0.43 0.06 +/- 0.30 3.2 W-101812 Water 10/18/2012 Ra-226 0.04 0.04 +/- 0.03 1 SPW-7754 Water 12/6/2012 U-238 0.10 0.02 +/- 0.08 1 SPW-18033 Water 12/18/2012 Ra-228 0.98 0.43 +/- 0.50 2 a 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-1 31 as analyzed by gamma spectroscopy.

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

A4-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance CF-20, 21 1/3/2012 Gr. Beta 14.50 +/- 0.29 15.02 +/- 0.30 14.76 +/- 0.21 Pass CF-20, 21 1/3/2012 K-40 12.88 +/- 0.55 12.40 +/- 0.53 12.64 +/- 0.38 Pass CF-20, 21 1/3/2012 Sr-90 0.01 +/- 0.01 0.01 +/- 0.01 0.01 +/- 0.00 Pass P-9133, 9134 1/3/2012 H-3 108.86 +/- 83.03 206.60 +/- 86.38 157.73 +/- 59.91 Pass U-302, 303 1/17/2012 Beta (-K40) 6.84 +/- 2.91 5.24 +/- 2.56 6.04 +/- 1.94 Pass S-386, 387 1/23/2012 Ac-228 0.77 +/- 0.11 0.79 +/- 0.14 0.78 +/- 0.09 Pass S-386, 387 1/23/2012 Bi-214 0.80 +/- 0.07 0.73 +/- 0.11 0.77 +/- 0.07 Pass S-386, 387 1/23/2012 Pb-214 0.74 +/- 0.06 0.75 +/- 0.11 0.75 +/- 0.06 Pass S-386, 387 1/23/2012 TI-208 0.21 +/- 0.02 0.21 +/- 0.04 0.21 +/- 0.02 Pass S-386,387 1/23/2012 U-235 0.05 +/- 0.02 0.12 +/- 0.05 0.09 +/- 0.03 Pass WW-619, 620 1/31/2012 H-3 257.20 +/- 86.00 305.80 +/- 88.30 281.50 +/- 61.63 Pass MI-702, 703 2/6/2012 K-40 1337.00 +/- 123.00 1460.40 +/- 102.00 1398.70 +/- 79.90 Pass WW-892, 893 2/17/2012 Gr. Beta 3.46 +/- 0.56 3.77 +/- 0.59 3.61 +/- 0.41 Pass S-850,851 2/22/2012 Cs-134 0.14 +/- 0.02 0.13 +/- 0.02 0.14 +/- 0.01 Pass S-850,851 2/22/2012 Cs-137 0.21 +/- 0.03 0.22 +/- 0.03 0.22 +/- 0.02 Pass W-1251, 1252 3/6/2012 Gr. Alpha 1.20 +/- 0.62 1.27 +/- 0.92 1.24 +/- 0.55 Pass W-1251, 1252 3/6/2012 Gr. Beta 16.86 +/- 1.43 15.14 +/- 1.34 16.00 +/- 0.98 Pass W-1251, 1252 3/6/2012 H-3 5235.52 +/- 230.91 4893.24 +/- 224.55 5064.38 +/- 161.05 Pass W-1251, 1252 3/6/2012 Tc-99 19.67 +/- 3.60 14.46 +/- 3.51 17.07 +/- 2.51 Pass AP-1209, 1210 3/8/2012 Be-7 0.24 +/- 0.12 0.20 +/- 0.11 0.22 +/- 0.08 Pass XWW-1564, 1565 3/14/2012 H-3 308.00 +/- 88.00 293.00 +/- 87.00 300.50 +/- 61.87 Pass SG-1438, 1439 3/19/2012 Ac-228 6.01 +/- 0.30 6.23 +/- 0.31 6.12 +/- 0.22 Pass SG-1438, 1439 3/19/2012 Pb-214 4.69 +/- 0.49 5.20 +/- 0.54 4.95 +/- 0.36 Pass WW-1585, 1586 3/19/2012 H-3 3124.50 +/- 176.96 2982.38 +/- 173.62 3053.44 +/- 123.96 Pass AP-2103, 2104 3/28/2012 Be-7 0.080 +/- 0.016 0.076 +/- 0.013 0.078 +/- 0.010 Pass AP-2166, 2167 3/28/2012 Be-7 0.061 +/- 0.020 0.071 +/- 0.016 0.066 +/- 0.013 Pass AP-1632, 1633 3/29/2012 Be-7 0.26 +/- 0.12 0.24 +/- 0.12 0.25 +/- 0.08 Pass E-1653, 1654 4/2/2012 Gr. Beta 1.53 +/- 0.05 1.55 +/- 0.04 1.54 +/- 0.03 Pass E-1653, 1654 4/2/2012 K-40 1.34 +/- 0.13 1.36 +/- 0.14 1.35 +/- 0.10 Pass SG-1677, 1678 4/2/2012 Ac-228 6.63 +/- 0.37 6.49 +/- 0.33 6.56 +/- 0.25 Pass SG-1677, 1678 4/2/2012 Pb-214 4.77 +/- 0.16 5.07 +/- 0.14 4.92 +/- 0.11 Pass SWU-1719, 1720 4/3/2012 Gr. Beta 1.16 +/- 0.41 1.53 +/- 0.44 1.35 +/- 0.30 Pass W-1698, 1699 4/5/2012 Gr. Beta 10.86 +/- 1.49 9.42 +/- 1.32 10.14 +/- 1.00 Pass W-1698, 1699 4/5/2012 Ra-226 0.41 +/- 0.15 0.67 +/- 0.18 0.54 +/- 0.12 Pass W-1698, 1699 4/5/2012 Ra-228 1.46 +/- 0.76 1.48 +/- 0.74 1.47 +/- 0.53 Pass SG-1761, 1762 4/10/2012 Ac-228 16.26 +/- 0.53 16.55 +/- 0.44 16.41 +/- 0.34 Pass SG-1761, 1762 4/10/2012 Pb-214 14.16 +/- 1.44 15.40 +/- 1.56 14.78 +/- 1.06 Pass AP-2019, 2020 4/12/2012 Be-7 0.17 +/- 0.10 0.17 +/- 0.08 0.17 +/- 0.07 Pass DW-2272, 2273 4/20/2012 1-131 0.52 +/- 0.24 0.49 +/- 0.27 0.51 +/- 0.18 Pass DW-2356, 2357 4/24/2012 Gr. Beta 12.82 +/- 2.01 9.47 +/- 1.74 11.14 +/- 1.33 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 G-2403, 2404 5/1/2012 Be-7 1.77 +/- 0.21 1.55 +/- 0.33 1.66 +/- 0.20 Pass G-2403, 2404 5/1/2012 K-40 6.38 +/- 0.50 6.93 +/- 0.72 6.66 +/- 0.44 Pass BS-2445, 2446 5/1/2012 Gr. Beta 8.92 +/- 1.52 9.29 +/- 1.63 9.11 +/- 1.11 Pass BS-2445, 2446 5/1/2012 K-40 5.86 +/- 0.38 6.22 +/- 0.48 6.04 +/- 0.31 Pass SWU-2550, 2551 5/1/2012 Gr. Beta 2.07 +/- 0.65 1.59 +/- 0.62 1.83 +/- 0.45 Pass WW-2614, 2615 5/1/2012 Gr. Beta 2.03 +/- 1.04 2.36 +/- 1.14 2.20 +/- 0.77 Pass WW-2614, 2615 5/1/2012 H-3 750.60 +/- 106.20 653.20 +/- 102.30 701.90 +/- 73.73 Pass BS-2656, 2657 5/2/2012 Cs-137 0.13 +/- 0.07 0.07 +/- 0.04 0.10 +/- 0.04 Pass BS-2656, 2657 5/2/2012 K-40 10.15 +/- 0.97 11.13 +/- 0.90 10.64 +/- 0.66 Pass SO-2635, 2636 5/3/2012 Cs-137 0.046 +/- 0.024 0.050 +/- 0.027 0.048 +/- 0.018 Pass SO-2635, 2636 5/3/2012 K-40 13.20 +/- 0.74 14.01 +/- 0.67 13.61 +/- 0.50 Pass MI-2677, 2678 5/7/2012 K-40 1415.30 +/- 131.40 1348.10 +/- 109.00 1381.70 +/- 85.36 Pass VE-2719, 2720 5/7/2012 K-40 4.15 +/- 0.36 4.19 +/- 0.38 4.17 +/- 0.26 Pass SWU-3221, 3222 5/8/2012 Gr. Beta 1.67 +/- 0.47 1.39 +/- 0.45 1.53 +/- 0.33 Pass SWU-3221, 3222 5/8/2012 H-3 236.90 +/- 101.90 281.90 +/- 103.70 259.40 +/- 72.69 Pass WW-3073, 3074 5/14/2012 H-3 339.12 +/- 145.45 337.23 +/- 98.19 338.18 +/- 87.74 Pass AP-2968, 2969 5/17/2012 Be-7 0.25 +/- 0.12 0.21 +/- 0.09 0.23 +/- 0.07 Pass F-3031, 3032 5/22/2012 H-3 11291.00 +/- 372.80 11167.00 +/- 315.00 11229.00 +/- 244.03 Pass F-3031, 3032 5/22/2012 K-40 3528.90 +/- 372.80 3677.20 +/- 392.40 3603.05 +/- 270.63 Pass G-3094, 3095 5/23/2012 Gr. Beta 7.89 +/- 0.16 8.01 +/- 0.16 7.95 +/- 0.11 Pass F-3412, 3413 5/23/2012 Gr. Beta 3.46 +/- 0.10 3.33 +/- 0.10 3.40 +/- 0.07 Pass F-3412, 3413 5/23/2012 K-40 2.40 +/- 0.38 2.55 +/- 0.43 2.48 +/- 0.29 Pass MI-3067, 3068 5/24/2012 K-40 1267.20 +/- 105.00 1305.70 +/- 109.80 1286.45 +/-75.96 Pass SO-3305, 3306 5/30/2012 Cs-137 0.024 +/- 0.013 0.030 +/- 0.015 0.027 +/- 0.010 Pass SO-3305, 3306 5/30/2012 Gr. Beta 10.95 +/- 0.89 10.86 +/- 0.89 10.91 +/- 0.63 Pass SO-3305, 3306 5/30/2012 TI-208 0.068 +/- 0.018 0.062 +/- 0.017 0.065 +/- 0.012 Pass LW-3454, 3455 5/31/2012 Gr. Beta 2.12 +/- 0.86 2.27 +/- 0.77 2.20 +/- 0.58 Pass BS-3697, 3698 6/14/2012 Be-7 2.05 +/- 0.19 2.27 +/- 0.38 2.16 +/- 0.21 Pass BS-3697, 3698 6/14/2012 Cs-1 37 2.32 +/- 0.39 2.26 +/- 0.66 2.29 +/- 0.38 Pass BS-3697, 3698 6/14/2012 K-40 6.67 +/- 0.28 6.64 +/- 0.42 6.66 +/- 0.25 Pass VE-3798, 3799 6/20/2012 K-40 5.93 +/- 0.38 6.03 +/- 0.37 5.98 +/- 0.26 Pass WW-4790, 4791 6/20/2012 H-3 251.33 +/- 86.51 372.48 +/- 92.27 311.90 +/- 63.24 Pass DW-30103, 30104 6/27/2012 Ra-226 0.30 +/- 0.08 0.42 +/- 0.09 0.36 +/- 0.06 Pass DW-30103, 30104 6/27/2012 Ra-228 0.76 +/- 0.54 0.78 +/- 0.54 0.77 +/- 0.38 Pass LW-3970, 3971 6/28/2012 Gr. Beta 1.49 +/- 1.06 0.72 +/- 0.53 1.11 +/- 0.59 Pass DW-3949, 3950 6/29/2012 1-131 0.54 +/- 0.26 0.25 +/- 0.26 0.40 +/- 0.18 Pass SG-4075, 4076 7/2/2012 Ac-228 0.33 +/- 0.09 0.34 +/- 0.06 0.34 +/- 0.05 Pass SG-4075, 4076 7/2/2012 K-40 6.71 +/- 0.58 7.20 +/- 0.32 6.96 +/- 0.33 Pass SG-4075, 4076 7/2/2012 Pb-214 0.46 +/- 0.05 0.49 +/- 0.03 0.48 +/- 0.03 Pass AP-4390, 4391 7/3/2012 Be-7 0.09 +/- 0.02 0.09 +/- 0.01 0.09 +/- 0.01 Pass AP-4390, 4391 7/3/2012 Be-7 0.11 +/- 0.02 0.10 +/- 0.01 0.11 +/- 0.01 Pass AP-4012, 4013 7/5/2012 Be-7 0.27 +/- 0.09 0.29 +/- 0.16 0.28 +/- 0.09 Pass SW-4033, 4034 7/5/2012 H-3 614.99 +/- 107.99 512.31 +/- 103.83 563.65 +/- 74.91 Pass A5-2

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance VE-4054, 4055 7/9/2012 K-40 7.28 t 0.56 7.42 +/- 0.63 7.35 +/- 0.42 Pass VE-4222, 4223 7/13/2012 Be-7 0.16 +/- 0.08 0.22 +/- 0.09 0.19 +/- 0.06 Pass VE-4222, 4223 7/13/2012 K-40 7.20 +/- 0.30 6.60 +/- 0.30 6.90 +/- 0.21 Pass DW-30113, 30114 7/13/2012 Ra-228 1.93 +/- 0.66 1.03 +/- 0.53 1.48 +/- 0.42 Pass DW-30115, 30116 7/13/2012 Gr. Alpha 7.46 +/- 1.21 7.02 +/- 1.14 7.24 +/- 0.83 Pass DW-30124, 30125 7/13/2012 Ra-226 1.16 +/- 0.15 0.90 +/- 0.12 1.03 +/- 0.10 Pass DW-30124, 30125 7/13/2012 Ra-228 1.38 +/- 0.56 1.72 +/- 0.60 1.55 +/- 0.41 Pass DW-30126, 30127 7/13/2012 Gr. Alpha 6.23 +/- 1.16 6.75 +/- 1.29 6.49 +/- 0.87 Pass AP-4433, 4434 7/19/2012 Be-7 0.17 +/- 0.09 0.21 +/- 0.10 0.19 +/- 0.07 Pass SG-4475, 4476 7/19/2012 Gr. Alpha 17.03 +/- 4.17 15.56 +/- 3.96 16.30 +/- 2.88 Pass SG-4475, 4476 7/19/2012 Gr. Beta 13.23 +/- 2.61 14.36 +/- 2.47 13.80 +/- 1.80 Pass WW-4685, 4686 7/24/2012 H-3 289.00 +/- 99.00 375.00 +/- 103.00 332.00 +/- 71.43 Pass AP-4706, 4707 7/26/2012 Be-7 0.28 +/- 0.14 0.24 +/- 0.14 0.26 +/- 0.10 Pass SO-4748, 4749 7/26/2012 Gr. Beta 20.45 +/- 1.04 19.22 +/- 0.94 19.84 +/- 0.70 Pass SO-4748, 4749 7/26/2012 Gr. Beta 20.45 +/- 1.04 19.22 +/- 0.94 19.84 +/- 0.70 Pass SO-4748, 4749 7/26/2012 U-233/4 0.11 +/-0.02 0.10 +/- 0.01 0.11 +/- 0.01 Pass SO-4748, 4749 7/26/2012 U-238 0.12 +/- 0.02 0.11 +/- 0.01 0.12 +/- 0.01 Pass VE-4832, 4833 8/1/2012 K-40 4.06 +/- 0.22 4.08 +/- 0.24 4.07 +/- 0.16 Pass DW-30149, 30150 8/1/2012 Ra-226 2.69 +/- 0.22 2.79 +/- 0.22 2.74 +/- 0.16 Pass DW-30149, 30150 8/1/2012 Ra-228 2.77 +/- 0.75 1.61 +/- 0.57 2.19 +/- 0.47 Pass SG-4916, 4917 8/3/2012 Ac-228 11.03 +/- 0.33 11.08 +/- 0.44 11.06 +/- 0.28 Pass SG-4916, 4917 8/3/2012 K-40 6.39 +/- 0.80 6.98 +/- 0.88 6.69 +/- 0.59 Pass F-5313, 5314 8/9/2012 Cs-1 37 0.05 +/- 0.02 0.05 +/- 0.02 0.05 +/- 0.01 Pass F-5313, 5314 8/9/2012 Gr. Beta 4.12 +/- 0.08 4.10 +/- 0.08 4.11 +/- 0.06 Pass F-5313, 5314 8/9/2012 K-40 3.07 +/- 0.42 3.14 +/- 0.40 3.11 +/- 0.29 Pass VE-5166, 5167 8/15/2012 K-40 4.26 +/- 0.28 3.66 +/- 0.47 3.96 +/- 0.27 Pass VE-5376, 5377 8/22/2012 Gr. Beta 7.72 +/- 0.17 7.61 +/- 0.16 7.67 +/- 0.12 Pass VE-5334, 5335 8/27/2012 K-40 1.65 +/- 0.17 1.72 +/- 0.15 1.68 +/- 0.12 Pass VE-5481, 5482 8/28/2012 Be-7 2.52 +/- 0.19 2.65 +/- 0.21 2.59 +/- 0.14 Pass VE-5481, 5482 8/28/2012 K-40 5.05 +/- 0.37 4.79 +/- 0.39 4.92 +/- 0.27 Pass VE-5481, 5482 8/28/2012 Sr-90 0.01 +/- 0.00 0.01 +/- 0.01 0.01 +/- 0.00 Pass DW-30164, 30165 8/30/2012 Ra-226 1.33 +/- 0.15 1.59 +/- 0.17 1.46 +/- 0.11 Pass DW-30164, 30165 8/30/2012 Ra-228 2.76 +/- 0.66 1.54 +/- 0.56 2.15 +/- 0.43 Pass VE-5166, 5167 9/4/2012 K-40 2.05 1 0.32 2.53 +/- 0.36 2.29 +/- 0.24 Pass ME-5607, 5608 9/4/2012 Gr. Beta 2.92 +/- 0.08 2.89 +/- 0.08 2.90 +/- 0.06 Pass ME-5607, 5608 9/4/2012 K-40 2.06 +/- 0.32 2.53 +/- 0.36 2.29 +/- 0.24 Pass SW-5901, 5902 9/17/2012 H-3 10909.00 +/- 311.00 10817.00 +/- 310.00 10863.00 +/- 219.56 Pass BS-6048, 6049 9/24/2012 K-40 1.24 +/- 0.20 1.18 +/- 0.21 1.21 +/- 0.14 Pass AP-6482, 6483 9/27/2012 Be-7 0.09 +/- 0.02 0.09 +/- 0.03 0.09 +/- 0.02 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 G-6090,6091 10/1/2012 Be-7 3.74 +/- 0.33 3.54 +/- 0.30 3.64 +/- 0.22 Pass G-6090,6091 10/1/2012 Gr. Beta 10.81 +/- 0.34 10.72 +/- 0.33 10.77 +/- 0.24 Pass G-6090,6091 10/1/2012 K-40 5.99 +/- 0.47 5.45 +/- 0.44 5.72 +/- 0.32 Pass SO-6111, 6112 10/1/2012 Cs-137 0.06 +/- 0.03 0.04 +/- 0.02 0.05 +/- 0.02 Pass SO-6111, 6112 10/1/2012 K-40 19.66 +/- 0.84 20.09 +/- 0.80 19.88 +/- 0.58 Pass W-6795,6796 10/1/2012 H-3 215.20 +/- 88.00 292.80 +/- 91.60 254.00 +/- 63.51 Pass AP-6461, 6462 10/2/2012 Be-7 0.07 +/- 0.01 0.07 +/- 0.02 0.07 +/- 0.01 Pass WW-6279,6280 10/3/2012 Gr. Beta 1.54 +/- 0.68 1.67 +/- 0.75 1.61 +/- 0.51 Pass W-6346,6347 10/3/2012 Ra-226 0.30 +/- 0.10 0.36 +/- 0.10 0.33 +/- 0.07 Pass VE-6503, 6504 10/9/2012 K-40 5.23 +/- 0.83 6.00 +/- 0.45 5.62 +/- 0.47 Pass WW-6606, 6607 10/10/2012 Gr. Beta 3.18 +/- 1.31 2.42 +/- 1.27 2.80 +/- 0.91 Pass WW-6606,6607 10/10/2012 H-3 273.10 +/- 85.70 219.80 +/- 83.10 246.45 +/- 59.69 Pass WW-7237,7238 10/12/2012 H-3 175.44 +/- 99.84 180.75 +/- 100.03 178.10 +/- 70.66 Pass F-6627, 6628 10/15/2012 K-40 3.05 +/- 0.39 3.23 +/- 0.37 3.14 +/- 0.27 Pass VE-6669, 6670 10/16/2012 Be-7 0.48 +/- 0.26 0.50 +/- 0.13 0.49 +/- 0.15 Pass VE-6669, 6670 10/16/2012 K-40 4.06 +/- 0.28 3.68 +/- 0.26 3.87 +/- 0.19 Pass SS-6711, 6712 10/16/2012 Ac-228 0.16 +/- 0.05 0.17 +/- 0.06 0.17 +/- 0.04 Pass SS-6711, 6712 10/16/2012 Bi-214 0.13 +/- 0.03 0.16 +/- 0.03 0.14 +/- 0.02 Pass SS-6711, 6712 10/16/2012 Gr. Beta 14.20 +/- 0.89 12.67 +/- 0.88 13.44 +/- 0.63 Pass SS-6711, 6712 10/16/2012 Pb-212 0.15 +/- 0.06 0.13 +/- 0.02 0.14 +/- 0.03 Pass SS-6711, 6712 10/16/2012 TI-208 0.06 +/- 0.02 0.04 +/- 0.02 0.05 +/- 0.01 Pass WW-7258, 7259 10/22/2012 H-3 214.69 +/- 85.42 314.60 +/- 90.25 264.65 +/- 62.13 Pass WW-7655, 7656 10/25/2012 H-3 159.00 +/- 86.10 159.00 +/- 86.10 159.00 +/- 60.88 Pass WW-7747,7748 10/25/2012 H-3 156.50 +/- 84.70 170.20 +/- 85.30 163.35 +/- 60.10 Pass MI-6963, 6964 10/28/2012 K-40 1384.60 +/- 111.70 1421.60 +/- 107.60 1403.10 +/- 77.55 Pass MI-7174, 7175 11/5/2012 K-40 1283.60 +/- 97.45 1293.20 +/- 91.37 1288.40 +/- 66.79 Pass SG-7221, 7222 11/9/2012 Pb-214 31.49 +/- 0.70 30.11 +/- 0.80 30.80 +/- 0.53 Pass DW-30216, 30217 11/9/2012 Gr. Alpha 2.23 +/- 0.86 2.31 +/- 0.92 2.27 +/- 0.63 Pass DW-30216, 30217 11/9/2012 Ra-226 0.72 +/- 0.12 0.82 +/- 0.14 0.77 +/- 0.09 Pass DW-30216, 30217 11/9/2012 Ra-228 0.92 +/- 0.52 1.26 +/- 0.53 1.09 +/- 0.37 Pass MI-7363, 7364 11/13/2012 K-40 1304.40 +/- 103.30 1496.10 +/- 121.30 1400.25 +/- 79.66 Pass CF-7384, 7385 11/13/2012 K-40 11.75 +/- 0.52 10.94 +/- 0.59 11.35 +/- 0.39 Pass VE-7489, 7490 11/16/2012 K-40 2.22 +/- 0.23 1.91 +/- 0.22 2.06 +/- 0.16 Pass AP-7531, 7532 11/21/2012 Be-7 0.19 +/- 0.10 0.29 +/- 0.17 0.24 +/- 0.10 Pass BS-7573, 7574 11/24/2012 K-40 7.21 +/- 0.41 7.57 +/- 0.39 7.39 +/- 0.28 Pass LW-7865, 7866 12/5/2012 Gr. Beta 2.16 +/- 0.56 1.64 +/- 0.62 1.90 +/- 0.42 Pass SG-8095,8096 12/19/2012 Ac-228 25.15 +/- 0.73 25.47 +/- 0.54 25.31 +/- 0.45 Pass SG-8095,8096 12/19/2012 Gamma 26.98 +/- 2.72 28.68 +/- 2.89 27.83 +/- 1.98 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).

A5-4

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

Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits C Acceptance STW-1670 02/01/12 1-129 9.31 +/- 0.31 12.29 8.60.- 15.98 Pass STSO-1766 02/01/12 Am-241 88.50 +/- 8.30 159.00 111.00 -207.00 Fail STSO-1766 02/01/12 Co-57 1352.10 +/- 4.00 1179.00 825.00 -1533.00 Pass STSO-1766 02/01/12 Co-60 1.70 +/- 0.70 1.56 1.00 -2.00 Pass STSO-1766 02/01/12 Cs- 134 842.20 +/- 4.30 828.00 580.00 -1076.00 Pass STSO-1 766 02/01/12 Cs-137 0.40 +/- 0.90 0.00 0.00 -1.00 Pass STSO-1 766 02/01/12 K-40 1729.60 +/- 22.20 1491.00 1044.00 -1938.00 Pass STSO-1766 02/01/12 Mn-54 647.60 +/- 4.20 558.00 391.00 -725.00 Pass STS O- 1766 02/01/12 Ni-63 781.50 +/- 9.70 862.00 603.00 -1121.00 Pass STS O- 1766 02/01/12 Pu-238 142.40 +/- 9.70 136.00 97.00 -177.00 Pass STSO-1766 02/01/12 Pu-239/40 66.10 +/- 6.40 65.80 46.10 -85.50 Pass STSO-1766 02/01/12 Sr-90 383.20 +/- 15.30 392.00 274.00 -510.00 Pass STSO-1766 02/01/12 Tc-99 289.60 +/- 10.90 374.00 262.00 -486.00 Pass STSO-1766 02/01/12 U-233/4 63.20 +/- 5.40 68.10 47.70 -88.50 Pass STSO-1766 02/01/12 U-238 310.80 +/- 12.10 329.00 230.00 -428.00 Pass STSO-1766 02101/12 Zn-65 766.70 +/- 6.70 642.00 449.00 -835.00 Pass STAP-1 772 02/01/12 Am-241 0.062 +/- 0.02 0.073 0.051 -0.10 Pass STAP-1 772 02/01/12 Co-57 0.010 +/- 0.01 0.00 0.000 -1.00 Pass STAP-1772 02/01/12 Co-60 2.40 +/- 0.08 2.18 1.53 -2.84 Pass STAP-1 772 02/01/12 Cs-134 2.33 +/- 0.13 2.38 1.67 -3.09 Pass STAP-1772 02/01/12 Cs-137 2.07 +/- 0.10 1.79 1.25 - 2.33 Pass STAP-1772 02/01/12 Mn-54 3.77 +/- 0.14 3.24 2.27 - 4.21 Pass STAP-1 772 02/01/12 Pu-238 0.003 +/- 0.004 0.002 0.000 -0.10 Pass STAP-1772 02/01/12 Pu-239/40 0.098 +/- 0.017 0.097 0.07 -0.13 Pass STAP-1772 02/01/12 Sr-90 -0.010 +/- 0.060 0.000 -0.10 -0.13 Pass STAP-1772e 02/01/12 U-233/4 0.016 +/- 0.006 0.019 0.013 - 0.024 Pass STAP-1 772 02/01/12 U-238 0.11 +/- 0.02 0.12 0.09 -0.16 Pass STAP-1772 02/01/12 Zn-65 3.67 +/- 0.20 2.99 2.09 - 3.89 Pass STAP-1773 02/01/12 Gr. Alpha 0.51 +/- 0.05 1.20 0.40 - 2.00 Pass STAP-1773 02/01/12 Gr. Beta 2.75 +/- 0.10 2.40 1.20 - 3.60 Pass STVE-1776 02/01/12 Co-57 14.57 +/- 0.28 12.00 8.40 - 15.60 Pass STVE-1776 02/01/12 Co-60 6.45 +/- 0.23 6.05 4.24 - 7.87 Pass STVE-1776 02/01/12 Cs-134 8.39 +/- 0.29 8.43 5.90 - 10.96 Pass STVE-1776 02/01/12 Cs-137 0.01 +/- 0.09 0.00 0.00 -0.10 Pass STVE-1776 02/01/12 Mn-54 0.03 +/- 0.08 0.00 0.00 -0.10 Pass STVE-1776 02/01/12 Zn-65 10.31 +/- 0.67 8.90 6.23 -11.57 Pass STW-1960 02/01/12 Gr. Alpha 1.68 +/- 0.09 2.14 0.64 - 3.64 Pass STW-1960 02/01/12 Gr. Beta 6.33 +/- 0.10 6.36 3.18 -9.54 Pass A6-1

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

Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits C Acceptance STW-1964 02/01/12 Am-241 1.28 +/- 0.12 1.63 1.14 -2.12 Pass STW-1964 02/01/12 Co-57 33.30 +/- 0.40 32.90 23.00 - 42.80 Pass STW-1 964 02/01/12 Co-60 23.20 +/- 0.40 23.72 16.60 -30.84 Pass STW-1 964 02/01/12 Cs-134 0.30 +/- 3.00 0.00 0.00 -1.00 Pass STW-1964 02/01/12 Cs-137 40.10 +/- 0.60 39.90 27.90 - 51.90 Pass STW-1964 02/01/12 Fe-55 65.10 +/- 9.50 81.90 57.30 - 106.50 Pass STW-1964 02/01/12 H-3 460.00 +/- 12.10 437.00 306.00 - 568.00 Pass STW-1964 02/01/12 K-40 153.00 +/- 4.20 142.00 99.00 - 185.00 Pass STW-1964 02/01/12 Mn-54 32.70 +/- 0.60 31.80 22.30 - 41.30 Pass STW-1964 02/01/12 Ni-63 49.80 +/- 2.90 60.00 42.00 - 78.00 Pass STW-1964 02/01/12 Pu-238 0.58 +/- 0.06 0.63 0.44 - 0.82 Pass STW-1964 02/01/12 Pu-239/40 1.30 +/- 0.15 1.34 0.94-1.74 Pass STW-1964 02/01/12 Sr-90 0.10 +/- 0.20 0.00 0.00 - 1.00 Pass STW-1964 02/01/12 Tc-99 23.70 +/- 0.80 27.90 19.50 - 36.30 Pass STW-1964 02/01/12 U-233/4 0.40 +/- 0.05 0.39 0.27 - 0.51 Pass STW-1 964 02/01/12 U-238 2.67 +/- 0.13 2.76 1.93 -3.59 Pass STW-1964 02/01/12 Zn-65 0.01 +/- 0.20 0.00 0.00 - 1.00 Pass STW-5391 08/01/12 1-129 5.73 +/- 0.28 6.82 4.77 - 8.87 Pass STSO-5392 08/01/12 Am-241 129.30 +/- 12.70 111.00 78.00 - 144.00 Pass STSO-5392 08/01/12 Ni-63 376.20 +/- 20.60 406.00 284.00 - 528.00 Pass STSO-5392 08/01/12 Pu-238 118.70 +/- 9.30 105.80 74.10 - 137.50 Pass STSO-5392 08/01/12 Pu-239/40 140.70 +/- 9.90 134.00 94.00 - 174.00 Pass STSO-5392 08/01/12 Sr-90 483.52 +/- 16.47 508.00 356.00 - 660.00 Pass STSO-5392 08/01/12 Tc-99 432.50 +/- 23.10 469.00 328.00 - 610.00 Pass STSO-5394 08/01/12 Co-57 1528.00 +/- 4.10 1316.00 921.00 - 1711.00 Pass STSO-5394 08/01/12 Co-60 592.00 +/- 3.20 531.00 372.00 - 690.00 Pass STSO-5394 08/01/12 Cs-134 933.60 +/- 5.82 939.00 657.00 - 1221.00 Pass STSO-5394 08/01/12 Cs-137 1319.80 +/- 5.50 1150.00 805.00 - 1495.00 Pass STSO-5394 08/01/12 K-40 737.30 +/- 17.70 632.00 442.00 - 822.00 Pass STSO-5394 08/01/12 Mn-54 1083.20 +/- 5.20 920.00 644.00 - 1196.00 Pass STSO-5394 08/01/12 U-233/4 55.80 +/- 4.20 60.30 42.20 - 78.40 Pass STSO-5394 08/01/12 U-238 231.20 +/- 8.60 263.00 184.00 - 342.00 Pass STSO-5394 08/01/12 Zn-65 696.10 + 7.00 606.00 424.00 - 788.00 Pass A6-2

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

Concentration a Known Control Lab Code b Date Analysis Laboratory result Activity Limits c Acceptance STVE-5395 1 08/01/12 Co-57 7.44 +/- 0.17 5.66 3.96 - 7.36 Fail STVE-5395 08/01/12 Co-60 5.90 +/- 0.15 5.12 3.58 - 6.66 Pass STVE-5395 08/01/12 Cs-134 7.40 +/- 0.31 6.51 4.56 -8.46 Pass STVE-5395 08/01/12 Cs-137 5.45 +/- 0.18 4.38 3.07 -5.69 Pass STVE-5395 08/01/12 Mn-54 4.06 +/- 0.21 3.27 2.29 -4.25 Pass STAP-5398 08/01/12 Gr. Alpha 0.41 +/- 0.05 0.97 0.29 - 1.65 Pass STAP-5398 08/01/12 Gr. Beta 2.11 +/- 0.09 1.92 0.96 - 2.88 Pass STAP-5401 08/01/12 Am-241 0.12 +/- 0.02 0.08 0.05 - 0.10 Fail STAP-5403 08/01/12 Co-57 1.96 +/- 0.05 1.91 1.34 -2.48 Pass STAP-5403 08/01/12 Co-60 1.76 +/- 0.07 1.73 1.21 -2.25 Pass STAP-5403 08/01/12 Cs-134 2.74 +/- 0.18 2.74 1.92 -3.56 Pass STAP-5403 08/01/12 Cs-137 0.00 +/- 0.03 0.00 -0.01 - 0.01 Pass STAP-5403 08/01/12 Mn-54 2.52 +/- 0.10 2.36 1.65 - 3.07 Pass STAP-5403 08/01/12 Pu-238 0,050 +/- 0.015 0.063 0.044 - 0.081 Pass STAP-5403 08/01/12 Pu-239/40 0.001 +/- 0.004 0.00081 0.000 - 0.010 Pass STAP-5403' 08/01/12 U-233/4 0.009 +/- 0.011 0.014 0.010 - 0.018 Fail STAP-5403 08/01/12 U-238 0.08 +/- 0.02 0.10 0.070 - 0.130 Pass STAP-5403 08/01/12 Zn-65 0.01 +/- 0.06 0.00 -0.010 - 0.010 Pass STW-5445 08/01/12 Fe-55 79.80 +/- 4.10 89.30 62.50 -116.10 Pass STW-5445 08/01/12 Ni-63 74.30 +/- 3.40 66.30 46.40 - 86.20 Pass STW-5445 08/01/12 U-233/4 0.46 +/- 0.05 0.45 0.32 - 0.59 Pass STW-5445 08/01/12 U-238 3.14 +/- 0.14 3.33 2.33 -4.33 Pass STW-54451 08/01/12 Am-241 0.64 +/- 0.04 1.06 0.74 -1.38 Fail a Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

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

Investigation was inconclusive, there was not enough sample for reanalysis. ERA results (A-7) for the same matrix were acceptable.

e No errors found in calculation or procedure, original analysis result; 0.010 +/- 0.010 Bq/filter.

f Reanalysis results were within limits, but low. ERA results (A-7) for the same matrix were acceptable.

The efficiency factor was recalculated for the second round of MAPEP testing. Original analysis results 55.8 +/- 12.6 Bq/L.

g Result of reanalysis; 6.74 +/- 0.15 Bq/sample. Gamma emitters for the vegetation matrix exhibited a high bias, only Co-57 exceeded acceptance limits. Recounted using a geometry more closely matched to the MAPEP sample size.

Result of reanalysis; 0.070 +/- 0.013 Bq/filter.

Result of reanalysis; 0.013 + 0.005 pCi/filter. A larger sample size was used to reduce the counting error.

Result of reanalysis 1.07 t 0.06 pCi/L. The analyses of the MAPEP sample matrix resulted in recovery factors greater than 100%.

A correction was made using recovery based on analysis of blank samples. A new tracer solution is on order, future samples for MAPEP testing will include batch spike and blank samples.

A6-3

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

Concentration (pCi/L) b Lab Code b Date Analysis Laboratory ERA Control Result c Result d Limits Acceptance ERAP-1393 03/19/12 Co-60 917.5 +/- 7.0 880.0 681.0 -1100.0 Pass ERAP-1393 03/19/12 Cs-134 586.6 +/- 7.4 656.0 417.0 -814.0 Pass ERAP-1393 03/19/12 Cs-137 1255.9 +/- 9.4 1130.0 849.0 - 1480.0 Pass ERAP-1393 03/19/12 Mn-54 < 3.4 0.0 Pass ERAP-1393 03/19/12 Zn-65 1085.2 +/- 18.0 897.0 642.0 - 1240.0 Pass ERAP-1394 03/19/12 Am-241 86.9 +/- 2.9 68.8 42.4 -93.1 Pass ERAP-1394 03/19/12 Pu-238 70.2 +/- 3.6 63.2 43.3 - 83.1 Pass ERAP-1394 03/19/12 Pu-239/40 66.0 +/- 1.0 63.0 45.6 - 82.4 Pass ERAP-1394 03/19/12 Sr-90 112.5 +/- 15.4 89.6 43.8-134.0 Pass ERAP-1394 03/19/12 U-233/4 43.4 +/- 0.8 47.5 29.4 -71.6 Pass ERAP-1394 03/19/12 U-238 44.0 +/- 1.2 47.1 30.4 -65.1 Pass ERAP-1394 03/19/12 Uranium 89.1 +/- 2.2 96.7 53.5-147.0 Pass ERAP-1396 03/19/12 Gr. Alpha 81.1 +/- 1.5 77.8 26.1 -121.0 Pass ERAP-1396 03/19/12 Gr. Beta 68.4 +/- 0.7 52.5 33.2 -76.5 Pass ERSO-1397 03/19/12 Ac-228 1303.4 +/- 89.3 1570.0 1010.0 -2180.0 Pass ERSO-1397 03/19/12 Am-241 856.0 +/- 123.7 938.0 549.0 -1220.0 Pass ERSO-1397 03/19/12 Bi-212 1379.2 +/- 247.2 1550.0 413.0 - 2280.0 Pass ERSO-1397 03/19/12 Bi-214 965.2 +/- 38.4 1100.0 665.0 -1590.0 Pass ERSO-1397 03/19/12 Co-60 3693.6 +/- 32.1 3500.0 2370.0 -4820.0 Pass ERSO-1397 03/19/12 Cs-134 2257.3 +/- 45.4 2180.0 1420.0 - 2620.0 Pass ERSO-1397 03/19/12 Cs-137 9444.5 +/- 58.4 8770.0 6720.0 -11300.0 Pass ERSO-1397 03/19/12 K-40 11277.0 +/- 275.1 11600.0 8470.0 - 15600.0 Pass ERSO-1397 03/19/12 Mn-54 < 21.0 0.0 Pass ERSO-1397 03/19/12 Pb-212 1208.4 +/- 26.3 1510.0 992.0 -2110.0 Pass ERSO-1397 03/19/12 Pb-214 1041.6 +/- 46.9 1110.0 647.0 - 1650.0 Pass ERSO-1397 03/19/12 Pu-238 921.0 +/- 112.6 984.0 592.0 -1360.0 Pass ERSO-1397 03/19/12 Pu-239/40 1028.0 +/- 112.6 879.0 575.0 - 1210.0 Pass ERSO-1397 03/19/12 Sr-90 8128.0 +/- 329.0 8800.0 3360.0 -13900.0 Pass ERSO-1397 03/19/12 Th-234 2711.3 +/- 253.6 2000.0 632.0 - 3760.0 Pass ERSO-1397 03/19/12 U-233/4 1859.3 +/- 126.6 1960.0 1200.0 - 2510.0 Pass ERSO-1397 03/19/12 U-238 2003.3 +/- 130.3 2000.0 1240.0 - 2540.0 Pass ERSO-1397 03/19/12 Uranium 3939.5 +/- 283.8 4030.0 2190.0 -5320.0 Pass ERSO-1397 03/19/12 Zn-65 4200.4 +/- 65.9 3650.0 2910.0 -4850.0 Pass A7-1

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

Concentration (pCi/L) b Lab Code b Date Analysis Laboratory ERA Control Result c Result o Limits Acceptance ERVE-1400 03/19/12 Am-241 4194.8 +/- 199.5 4540.0 2780.0 - 6040.0 Pass ERVE-1400 03/19/12 Cm-244 1471.2 +/- 113.1 1590.0 779.0 - 2480.0 Pass ERVE-1400 03/19/12 Co-60 2347.8 +/- 47.9 2210.0 1520.0 - 3090.0 Pass ERVE-1400 03/19/12 Cs-134 2847.5 +/- 64.0 2920.0 1880.0 - 3790.0 Pass ERVE-1400 03/19/12 Cs-137 1503.5 +/- 52.5 1340.0 972.0 - 1860.0 Pass ERVE-1400 03/19/12 K-40 34105.7 +/- 745.3 28600.0 20700.0 - 40100.0 Pass ERVE-1400 03/19/12 Mn-54 < 26.8 0.0 Pass ERVE-1400 03/19/12 Pu-238 2509.0 +/- 213.6 2350.0 1400.0 - 3220.0 Pass ERVE-1400 03/19/12 Pu-239/40 2690.4 +/- 208.9 2570.0 1580.0 - 3540.0 Pass ERVE-1400 03/19/12 Sr-90 7881.5 +/- 470.8 8520.0 4860.0 - 11300.0 Pass ERVE-1400 03119/12 U-233/4 3149.6 +/- 165.2 3610.0. 2370.0 - 4640.0 Pass ERVE-1400 03/19/12 U-238 3203.6 +/- 166.5 3580.0 2390.0 - 4550.0 Pass ERVE-1400 03/19/12 Uranium 6463.7 +/- 363.2 7350.0 4980.0 - 9150.0 Pass ERVE-1400 03/19/12 Zn-65 2701.9 +/- 105.5 2310.0 1670.0 - 3240.0 Pass ERW-1403 03/19/12 Am-241 119.9 +/-3.2 135.0 91.0-181.0 Pass ERW-1403 03/19/12 Fe-55 713.7 +/- 127.4 863.0 514.0 - 1170.0 Pass ERW-1403 03/19/12 Pu-238 131.9 +/- 6.4 135.0 99.9 - 168.0 Pass ERW-1403 03/19/12 Pu-239/40 108.9 +/- 10.2 112.0 86.9-141.0 Pass ERW-1403 03/19/12 U-233/4 93.1 +/- 7.9 105.0 78.9 - 135.0 Pass ERW-1403 03/19/12 U-238 96.9 +/- 5.5 104.0 79.3 - 128.0 Pass ERW-1403 03/19/12 Uranium 190.0 +/- 13.8 214.0 157.0 -277.0 Pass ERW-1405 03/19/12 Co-60 858.7 +/- 5.6 875.0 760.0 - 1020.0 Pass ERW-1405 03/19/12 Cs-134 560.4 +/- 4.4 609.0 447.0 - 700.0 Pass ERW-1405 03/19/12 Cs-137 1239.9 +/- 7.4 1250.0 1060.0 - 1500.0 Pass ERW-1405 03/19/12 Mn-54 < 7.4 0.0 Pass ERW-1405 03/19/12 Sr-90 944.3 +/- 26.2 989.0 644.0 - 1310.0 Pass ERW-1405 03/19/12 Zn-65 786.9 +/- 20.6 749.0 624.0 - 945.0 Pass ERW-1406 03/19/12 Gr. Alpha 85.9 +/- 3.0 103.0 36.6 - 160.0 Pass ERW-1406 03/19/12 Gr. Beta 45.7 +/- 1.6 43.7 25.0 - 64.7 Pass ERW-1409 03/19/12 H-3 9045.0 +/- 284.0 9150.0 6130.0 - 13000.0 Pass 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). Results are reported in units of pCi/L, except for air filters (pCi/Filter), vegetation and soil (pCi/kg).

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

d Results are presented as the known values, expected laboratory precision (1 sigma, 1 determination) and control limits as provided by ERA. A known value of "zero" indicates an analysis was included in the testing series as provided.

a "false positive". Control limits are not 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 2012 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Air Particulate Station 53 (pCi/m 3) Gross Beta (324) 0.01 0.029 (270/270) 49 0.031 (54/54) 0.029 (54/54) 0 (0.009 - 0.064) 0.8 miles NNE (0.012 - 0.064) (0.011 - 0.064)

Gamma (24)

Be-7 0.082 (20/20) 37 0.085 (4/4) 0.090 (4/4) 0 (0.052 - 0.105) 2.0 miles NNW (0.052 - 0.103) (0.065 - 0.113)

Air Radioiodine Station 53 (pCi/m 3) 1-131 (324) 0.07 -(0/270) N/A N/A - (0/54) 0 Direct Radiation Stations 39 & 53 Dosimeters (mR per std. Gamma Dose 19.5 (164/164) 47 24.8 (4/4) 18.6 (8/8) 0 90-day Qtr.) (172) (10.0- 27.9) 0.16 miles S (19.9 - 27.9) (14.7 - 22.2)

Surface Water JRR (pCi/I) Gamma (24) - (0/12) N/A N/A - (0/12) 0 Tritium (24) 3,000 11,435 (12/12) SP 11,435 (12/12) - (0/12) 0 (10,037-12,545) 3.2 miles SSE (10,037-12,545)

Fe-55 (8) - (0/4) N/A N/A - (0/4) 0 Ground Water B-12 (pCi/I) 1-131 (32) 1 - (0/28) N/A N/A - (0/4) 0 Gamma (32) - (0/28) N/A N/A - (0/4) 0 Tritium (32) 2,000 -(0/28) N/A N/A - (0/4) 0 Page B-2

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

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2012 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-1 5 Water 1-131 (25) 1 -(0/12) N/A N/A - (0/13) 0 (pCi/I)

Gross Beta (25) 4 3.0 (12/12) 1O-DW 3.0 (12/12) 2.8 (13/13) 0 (2.1 -3.7) 26.1 miles SSE (2.1 -3.7) (1.2 -4.0)

Gamma (25) - (0/12) N/A N/A - (0/13) 0 Tritium (8) 2,000 222 (1/4) 1O-DW 222 (1/4) - (0/4) 0 26.1 miles SSE Shoreline Gamma (6) JRR Sediment (pCi/kg dry) K-40 8,827 (4/4) SC 12,147 (1/1) 8,298 (2/2) 0 (6,074 - 12,147) 0.8 miles NNW (6,356 - 10,239)

Cs-1 37 180 155.1 (2/4) EEA 234.3 (1/1) - (0/2) 0 (75.8 - 234.3) 3.0 miles NNW Fish Gamma (17) JRR (pCi/kg wet)

K-40 3,149 (9/9) CCL 3,149 (9/9) 3,165 (8/8) 0 (2,837 - 3,547) 0.6 miles E to (2,837 - 3,547) (2,944 - 3,497)

NNW Tritium (17) 7,728 (9/9) CCL 7,728 (9/9) -(0/8) 0 (6,808 - 8,948) 0.6 miles E to (6,808 - 8,948)

NNW Page B-3

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

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2012 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 (30) D-2 Garden (pCi/kg wet) Be-7 820 (20/21) Q-6 1,273 (6/6) 524 (6/9) 0 (212 - 3,348) 2.4 miles NW (212 - 3,348) (262 - 764)

K-40 - 5,935 (21/21) B-1 6,567 (7/7) 4,990 (9/9) 0 (3,868 - 9,300) 0.8 miles NNE (4,921 - 9,300) (3,033 - 5,892)

NR-U1 Crops Gamma (3)

(pCi/kg wet)

K-40 8,671 (2/2) NR-D1 14,309 (1/1) 2,994 (1/1) 0 (3,033 - 14,309) 8.9 miles S Bottom Gamma (19) JRR Sediment (pCi/kg dry)

K-40 - 9,766 (17/17) EEA 11,179 (1/1) 10,677 (2/2) 0 (7,502 - 11,301) 3.0 miles NNW (9,398 - 11,955)

Cs-1 37 - 76 (9/17) UHS 96 (4/10) 84 (2/2) 0 (26- 126) 0.6 miles E (68-126) (45-122)

Fe-55 (14) - -(0/14) N/A N/A 0 Page B-4

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

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generatinq Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2012 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Aquatic Gamma (4) No Control Vegetation (pCi/kg wet) Be-7 655 (3/4) DC-ALT 1,196(1/1) 0 (314- 1,196) 1.5 miles NW K-40 2,827 (4/4) EEA 4,601 (1/1) 0 (1,925 - 4,601) 3.0 miles NNW Terrestrial Gamma (1) No Control Vegetation (pCi/kg wet) Be-7 1,084 (1/1) EEA 1,084(1/1) 0 3.0 miles NNW K-40 13,379 (1/1) EEA 13,379 (1/1) 0 3.0 miles NNW Soil Gamma (1) No Control (pCi/kg dry)

K-40 8,520 (1/1) EEA 8,520 (1/1) 0 3.0 miles NNW Cs-137 155(1/1) EEA 155(1/1) 0 3.0 miles NNW Deer Gamma (1) No Control (pCi/kg wet)

K-40 2,640 (1/1) A1.5 2,640 (1/1) 0 1.5 miles N Tritium (1) 916(1/1) A1.5 916(1/1) 0 1.5 miles N Page B-5

• • 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 (pCilm3 ) (pCi/m 3 )

27-DEC-i 1 03-JAN-12 305 0.020 +1- 0.004 0.010 03-JAN-1 2 09-JAN- 12 255 0.020 +1- 0.004 0.012 09-JAN-1 2 16-JAN-12 298 0.020 +1- 0.003 0.009 16-JAN-12 23-JAN- 12 314 0.040 +1- 0.004 0.011 23-JAN-1 2 30-JAN- 12 304 0.015 +1- 0.004 0.018 30-JAN-12 06-FEB-12 302 0.019 +1- 0.004 0.013 06-FEB-1 2 15-FEB-12 388 0.027 +1- 0.003 0.013 15-FEB-1 2 21-FEB-1 2 260 0.028 +1- 0.004 0.016 21-FEB-1 2 27-FEB-1 2 266 0.013 +1- 0.004 0.010 27-FEB-1 2 05-MAR-1 2 291 0.018 +1- 0.004 0.011 27-FEB-12 05-MAR-1 2 291 0.024 +1- 0.004 Duplicate 05-MAR-12 12-MAR-1 2 298 0.019 +1- 0.004 0.017 12-MAR-12 19-MAR-12 290 0.017 +1- 0.004 0.014 19-MAR-12 26-MAR- 12 302 0.014 +1- 0.004 0.010 19-MAR-12 26-MAR- 12 302 0.012 +1- 0.004 Duplicate 26-MAR- 12 02-APR-1 2 299 0.028 +1- 0.004 0.012 02-APR-12 09-APR-1 2 301 0.022 +1- 0.004 0.013 09-APR-1 2 16-APR- 12 308 0.022 +1- 0.005 0.020 16-APR-12 24-APR-12 347 0.019 +1- 0.004 0.016 24-APR- 12 30-APR- 12 252 0.027 +1- 0.005 0.013 30-APR-12 08-MAY-1 2 336 0.019 +1- 0.004 0.019 08-MAY- 12 14-MAY-1 2 255 0.022 +1- 0.005 0.011 08-MAY- 12 14-MAY-1 2 255 0.023 +1- 0.005 Duplicate 14-MAY-12 21 -MAY-1 2 309 0.027 +1- 0.004 0.008 21-MAY-12 29-MAY-1 2 338 0.022 +1- 0.003 0.008 29-MAY-1 2 04-JUN-12 237 0.020 +1- 0.005 0.011 04-JUN-12 11-JUN-12 282 0.021 +1- 0.005 0.007 11-JUN-12 18-JUN-12 291 0.020 +1- 0.004 0.011 11-JUN-12 18-JUN-12 291 0.018 +1- 0.004 Duplicate 18-JUN-12 25-JUN-12 278 0.017 +1- 0.004 0.013 25-JUN-12 02-JUL-12 303 0.040 +1- 0.005 0.008 02-JUL-12 09-JUL-12 298 0.023 +1- 0.004 0.012 09-JUL-12 16-JUL-12 296 0.034 +1- 0.005 0.018 16-JUL-12 23-JUL-12 299 0.027 +1- 0.004 0.008 16-JUL-12 23-JUL-12 299 0.028 +1- 0.004 Duplicate 23-JUL-12 30-JUL-12 296 0.026 +1- 0.004 0.013 30-JUL-12 06-AUG-12 294 0.035 +1- 0.005 0.011 06-AUG-1 2 13-AUG-12 296 0.026 +1- 0.004 0.011 13-AUG- 12 20-AUG-12 302 0.024 +1- 0.004 0.011 20-AUG-12 27-AUG-1 2 298 0.032 +1- 0.004 0.014 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 1

Air Particulate and Charcoal Filters Location: 002 Collection Collection Volume Gross Beta 1-131 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCi/m 3 ) (pCi/m 3) 27-AUG-12 04-SEP-12 334 0.031 +1- 0.004 < 0.020 04-SEP-1 2 10-SEP-12 258 0.027 +1- 0.005 < 0.006 04-SEP-12 10-SEP-12 258 0.029 +1- 0.005 Duplicate 10-SEP-12 17-SEP-12 303 0.025 +1- 0.004 < 0.016 10-SEP-12 17-SEP-12 303 0.028 +1- 0.004 Duplicate 17-SEP-12 24-SEP-12 307 0.020 +1- 0.004 < 0.006 24-SEP-1 2 01-OCT-12 293 0.040 .1-I- 0.005 < 0.013 01-OCT- 12 08-OCT-12 310 0.033 +1- 0.005 < 0.018 08-OCT-1 2 15-OCT-12 310 0.035 +1- 0.004 < 0.014 15-OCT- 12 22-OCT-12 302 0.029 +1- 0.004 < 0.010 22-OCT-1 2 29-OCT-12 307 0.028 +1- 0.004 < 0.012 29-OCT-12 05-NOV-12 309 0.054 +1- 0.005 < 0.011 05-NOV-12 12-NOV- 12 303 0.020 +1- 0.004 < 0.011 05-NOV-12 12-NOV-12 303 0.026 +1- 0.004 Duplicate 12-NOV-12 19-NOV- 12 300 0.063 +1- 0.005 < 0.011 19-NOV- 12 26-NOV-1 2 307 0.055 +1- 0.005 < 0.015 26-NOV-12 03-DEC-12 330 0.051 +1- 0.005 < 0.008 03-DEC-1 2 10-DEC-12 319 0.032 +1- 0.004 < 0.007 10-DEC-1 2 17-DEC-12 300 0.054 +1- 0.005 < 0.018 17-DEC-12 26-DEC-12 387 0.051 +1- 0.004 < 0.009 26-DEC-1 2 31-DEC-12 210 0.042 +1- 0.006 < 0.019 31-DEC-1 2 07-JAN-13 313 0.037 +1- 0.004 < 0.013 2012 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 ) (pCilm 3) 27-DEC-i 1 03-JAN-1 2 305 0.017 +1- 0.004 0.010 03-JAN-12 09-JAN-1 2 262 0.022 +1- 0.004 0.012 09-JAN-1 2 16-JAN-12 304 0.025 +1- 0.004 0.009 16-JAN-12 23-JAN- 12 315 0.039 +1- 0.004 0.011 23-JAN-1 2 30-JAN- 12 299 0.017 +1- 0.004 0.019 30-JAN-12 06-FEB-12 305 0.018 +1- 0.004 0.013 06-FEB-12 15-FEB-12 392 0.027 +1- 0.003 0.013 15-FEB-12 21-FEB-12 261 0.030 +1- 0.005 0.016 21-FEB-12 27-FEB-12 259 0.009 +1- 0.004 0.010 27-FEB-1 2 05-MAR-12 285 0.021 +1- 0.004 0.011 05-MAR- 12 12-MAR-1 2 305 0.018 +1- 0.004 0.017 12-MAR-12 19-MAR-1 2 292 0.017 +1- 0.004 0.014 19-MAR-12 26-MAR-1 2 297 0.016 +1- 0.004 0.011 26-MAR- 12 02-APR-12 306 0.026 +1- 0.004 0.012 02-APR-12 09-APR-12 306 0.023 +1- 0.004 0.012 09-APR-12 16-APR-12 308 0.019 +1- 0.004 0.020 16-APR-1 2 24-APR-1 2 339 0.018 4I- 0.004 0.016 24-APR-1 2 30-APR-1 2 255 0.026 +1- 0.005 0.013 30-APR-12 08-MAY- 12 337 0.024 +1- 0.004 0.019 08-MAY- 12 14-MAY-12 258 0.025 +1- 0.005 0.011 14-MAY-12 21-MAY-12 305 0.024 +1- 0.004 0.008 21-MAY-12 29-MAY- 12 339 0.023 +1- 0.004 0.009 29-MAY- 12 04-JUN-12 251 0.017 +1- 0.005 0.010 04-JUN-12 11-JUN-12 302 0.020 +1- 0.004 0.006 11-JUN-12 18-JUN-12 305 0.018 +1- 0.004 0.011 18-JUN-12 25-JUN-12 302 0.020 +1- 0.004 0.012 25-JUN-12 02-JUL-12 298 0.045 +1- 0.005 0.008 02-JUL-12 09-JUL-12 298 0.021 +1- 0.004 0.012 09-JUL-12 16-JUL-12 303 0.033 +1- 0.004 0.017 16-JUL-12 23-JUL-12 295 0.029 +1- 0.004 0.009 23-JUL-12 30-JUL-12 298 0.024 +1- 0.004 0.013 30-JUL-12 06-AUG-12 295 0.033 +1- 0.005 0.011 06-AUG-12 13-AUG- 12 297 0.025 +1- 0.004 0.011 13-AUG- 12 20-AUG-12 298 0.027 +1- 0.004 0.011 20-AUG-12 27-AUG-1 2 299 0.035 +1- 0.004 0.014 27-AUG-12 04-SEP-12 331 0.034 +1- 0.004 0.020 04-SEP-12 10-SEP-12 256 0.032 +1- 0.005 0.006 10-SEP-12 17-SEP-12 302 0.023 +1- 0.004 0.016 17-SEP-12 24-SEP-12 308 0.020 +1- 0.004 0.006 24-SEP- 12 01-OCT-12 296 0.043 +1- 0.005 0.013 2012 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/r 3 ) (pCi/m 3) 24-SEP-12 01-OCT-12 296 0.037 +1- 0.005 Duplicate 01-OCT-12 08-OCT-12 309 0.027 +1- 0.004 0.018 08-OCT-12 15-OCT-1 2 294 0.034 +1- 0.005 0.015 15-OCT- 12 22-OCT-1 2 307 0.028 +1- 0.004 0.010 22-OCT-1 2 29-OCT-1 2 306 0.028 +1- 0.004 0.012 29-OCT-1 2 05-NOV-12 299 0.054 +1- 0.005 0.011 05-NOV-12 12-NOV-12 305 0.022 +1- 0.004 0.011 12-NOV-12 19-NOV-12 290 0.063 +1- 0.005 0.011 19-NOV-12 26-NOV-12 304 0.056 +1- 0.005 0.015 26-NOV-1 2 03-DEC-12 295 0.050 +1- 0.005 0.009 03-DEC-12 10-DEC-1 2 311 0.029 +1- 0.004 0.008 10-DEC-12 17-DEC-1 2 302 0.056 +1- 0.005 0.018 17-DEC-12 26-DEC-1 2 384 0.053 +1- 0.004 0.009 26-DEC-12 31-DEC-1 2 212 0.044 +1- 0.006 0.019 31-DEC-12 07-JAN-13 315 0.046 +1- 0.005 0.013 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 4

Air Particulate and Charcoal Filters Location: 032 Collection Collection Volume Gross Beta 1-1.31 Duplicate Start Date End Date m3 Concentration Concentration Analysis (pCirm 3 ) (pCi/m 3) 27-DEC-i 1 03-JAN-1 2 307 0.015 +1- 0.004 0.010 03-JAN- 12 09-JAN-1 2 255 0.018 +1- 0.004 0.012 09-JAN- 12 16-JAN-12 299 0.021 +1- 0.003 0.009 09-JAN- 12 16-JAN-12 299 0.021 +1- 0.003 Duplicate 16-JAN-12 23-JAN- 12 315 0.042 +1- 0.004 0.011 23-JAN- 12 30-JAN- 12 301 0.018 +1- 0.004 0.019 30-JAN-1 2 06-FEB-12 303 0.016 +1- 0.003 0.013 06-FEB-12 15-FEB-12 391 0.024 +1- 0.003 0.013 15-FEB-12 21-FEB-12 259 0.031 +1- 0.005 0.016 21-FEB-12 27-FEB-1 2 267 0.015 +1- 0.004 0.010 27-FEB-12 05-MAR-1 2 294 0.022 +1- 0.004 0.011 05-MAR-1 2 12-MAR- 12 300 0.022 +1- 0.004 0.017 12-MAR-1 2 19-MAR-1 2 292 0.017 +1- 0.004 0.014 19-MAR-1 2 26-MAR-12 '302 0.014 +1- 0.004 0.010 26-MAR-12 02-APR-12 297 0.029 +1- 0.004 0.012 02-APR-12 09-APR-1 2 306 0.021 +1- 0.004 0.012 02-APR-12 09-APR-12 306 0.020 +1- 0.004 Duplicate 09-APR-12 16-APR-12 310 0.014 +1- 0.004 0.020 16-APR-12 24-APR-1 2 360 0.022 +1- 0.004 0.015 24-APR-12 30-APR-12 254 0.029 +1- 0.005 0.013 30-APR-1 2 08-MAY- 12 340 0.019 +1- 0.003 0.019 08-MAY-1 2 14-MAY- 12 260 0.025 +1- 0.005 0.011 14-MAY-1 2 21-MAY-12 309 0.021 +1- 0.004 0.008 21-MAY-1 2 29-MAY-1 2 334 0.024 +1- 0.004 0.010 29-MAY- 12 04-JUN-12 254 0.016 +1- 0.005 0.010 04-JUN-12 11-JUN-12 304 0.023 +1- 0.004 0.006 11-JUN-12 18-JUN-12 300 0.021 +1- 0.004 0.011 18-JUN-12 25-JUN-12 300 0.021 +1- 0.004 0.012 25-JUN-1 2 02-JUL-12 302 0.041 +1- 0.005 0.008 02-JUL-12 09-JUL-12 300 0.025 +1- 0.004 0.012 09-JUL-12 16-JUL-12 299 0.031 +1- 0.004 0.018 16-JUL-12 23-JUL-12 297 0.027 +1- 0.004 0.008 23-JUL-12 30-JUL-12 297 0.028 +1- 0.004 0.013 30-JUL-12 06-AUG-12 296 0.029 +1- 0.004 0.011 06-AUG-12 13-AUG-12 296 0.025 +1- 0.004 0.011 13-AUG-12 20-AUG-1 2 295 0.026 +1- 0.004 0.011 20-AUG-12 27-AUG-1 2 298 0.030 +1- 0.004 0.014 27-AUG-12 04-SEP-12 334 0.032 +1- 0.004 0.020 04-SEP-12 10-SEP-12 257 0.026 +1- 0.005 0.006 10-SEP-12 17-SEP-12 301 0.025 +1- 0.004 0.016 2012 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 m3 Start Date End Date Concentration Concentration Analysis (pCi/m 3 ) (pCilm 3 )

17-SEP-12 24-SEP-12 310 0.022 +1- 0.004 0.006 24-SEP-12 01-OCT-12 295 0.036 +1- 0.005 0.013 01-OCT-12 08-OCT- 12 310 0.032 +1- 0.005 0.018 08-OCT-12 15-OCT-12 302 0.033 +1- 0.004 0.015 15-OCT-1 2 22-OCT- 12 298 0.029 +1- 0.005 0.011 22-OCT-12 29-OCT-12 306 0.024 +1- 0.004 0.012 29-OCT-1 2 05-NOV-12 302 0.054 +1- 0.005 0.011 05-NOV-12 12-NOV- 12 305 0.024 +1- 0.004 0.011 12-NOV-12 19-NOV- 12 297 0.060 +1- 0.005 0.011 12-NOV-12 19-NOV- 12 297 0.064 +1- 0.005 Duplicate 19-NOV-12 26-NOV-1 2 305 0.050 +1- 0.005 < 0.015 26-NOV-12 03-DEC-12 296 0.056 +1- 0.005 < 0.009 26-NOV-12 03-DEC-12 296 0.050 +1- 0.005 Duplicate 03-DEC-12 10-DEC-12 319 0.029 +1- 0.004 0.007 10-DEC-12 17-DEC-1 2 299 0.056 +1- 0.005 0.018 17-DEC-12 26-DEC-12 385 0.052 +1- 0.004 0.009 26-DEC-12 31-DEC-1 2 212 0.043 +1- 0.006 0.019 31-DEC-12 07-JAN-1 3 318 0.046 +1- 0.005 0.013 2012 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-i 1 03-JAN-12 306 0.017 +1- 0.004 < 0.010 27-DEC-1i1 03-JAN-12 306 0.015 +1- 0.004 Duplicate 03-JAN-1 2 09-JAN-12 255 0.020 +1- 0.004 < 0.012 09-JAN-1 2 16-JAN-1 2 302 0.022 +1- 0.003 < 0.009 16-JAN-12 23-JAN-1 2 316 0.042 +1- 0.004 < 0.011 23-JAN-12 30-JAN-1 2 303 0.016 +1- 0.004 < 0.018 23-JAN- 12 30-JAN-12 303 0.016 +1- 0.004 Duplicate 30-JAN- 12 06-FEB-12 307 0.022 +1- 0.004 < 0.013 30-JAN-12 06-FEB-12 307 0.018 +1- 0.004 Duplicate 06-FEB-12 15-FEB-12 389 0.024 +1- 0.003 < 0.013 15-FEB-12 21-FEB-12 260 0.030 +1- 0.005 < 0.016 15-FEB-12 21-FEB-12 260 0.028 +1- 0.004 Duplicate 21-FEB-1 2 27-FEB-12 268 0.014 +1- 0.004 < 0.010 27-FEB-12 05-MAR- 12 295 0.020 +1- 0.004 < 0.010 05-MAR- 12 12-MAR-12 299 0.022 +1- 0.004 < 0.017 12-MAR-12 19-MAR-12 292 0.019 +1- 0.004 < 0.014 19-MAR-1 2 26-MAR-1 2 304 0.015 0.004 < 0.010 26-MAR- 12 02-APR-12 299 0.028 +1- 0.004 < 0.012 02-APR-1 2 09-APR-12 303 0.020 +1- 0.004 < 0.012 09-APR-12 16-APR-12 308 0.018 +1- 0.004 < 0.020 16-APR- 12 24-APR-12 343 0.023 +1- 0.004 < 0.016 24-APR-12 30-APR-12 255 0.027 +1- 0.005 < 0.013 24-APR-12 30-APR-1 2 255 0.028 +1- 0.005 Duplicate 30-APR-12 08-MAY- 12 345 0.016 +1- 0.003 0.019 08-MAY-1 2 14-MAY-12 255 0.026 +1- 0.005 0.011 14-MAY-1 2 21-MAY-12 309 0.024 +1- 0.004 0.008 21 -MAY-1 2 29-MAY- 12 331 0.023 +1- 0.004 0.010 29-MAY-1 2 04-JUN-12 259 0.019 +1- 0.005 0.010 04-JUN-12 11-JUN-12 307 0.025 +1- 0.004 0.006 04-JUN-12 11-JUN-12 307 0.025 +1- 0.004 Duplicate 11-JUN-12 18-JUN-12 303 0.014 +1- 0.004 0.011 18-JUN-12 25-JUN-12 300 0.022 +1- 0.004 0.012 25-JUN-12 02-JUL-12 297 0.041 +1- 0.005 0.008 02-JUL-12 09-JUL-12 301 0.026 +1- 0.004 0.012 09-JUL-12 16-JUL-12 298 0.031 +1- 0.004 0.018 16-JUL-12 23-JUL-12 298 0.030 +1- 0.004 0.008 23-JUL-12 30-JUL-12 296 0.024 +1- 0.004 0.013 30-JUL-12 06-AUG- 12 297 0.028 +1- 0.004 0.011 06-AUG- 12 13-AUG-12 299 0.027 +1- 0.004 0.011 13-AUG-12 20-AUG-12 299 0.022 +1- 0.004 0.011 2012 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 3

Start Date End Date m Concentration Concentration Analysis (pCi/mr3 ) (pCi/m 3 )

20-AUG-12 27-AUG-12 300 0.033 +1- 0.004 0.014 27-AUG-12 04-SEP-12 338 0.031 +1- 0.004 0.020 04-SEP-12 10-SEP-12 260 0.031 +1- 0.005 0.006 10-SEP-12 17-SEP-12 299 0.026 +1- 0.004 0.016 17-SEP-12 24-SEP-12 309 0.022 +1- 0.004 0.006 24-SEP-1 2 01-OCT-12 298 0.038 +1- 0.005 0.013 01-OCT-12 08-OCT-12 311 0.024 +1- 0.004 0.018 08-OCT- 12 15-OCT-12 308 0.034 +1- 0.004 0.014 15-OCT- 12 22-OCT-12 308 0.031 +1- 0.004 0.010 22-OCT-12 29-OCT-12 317 0.026 +1- 0.004 0.011 29-OCT-12 05-NOV-1 2 303 0.052 +1- 0.005 0.011 29-OCT-1 2 05-NOV-1 2 303 0.060 +1- 0.005 Duplicate 05-NOV-12 12-NOV-12 303 0.024 +1- 0.004 0.011 12-NOV- 12 19-NOV-12 300 0.060 +1- 0.005 0.011 19-NOV- 12 26-NOV-12 312 0.053 +1- 0.005 0.015 26-NOV-12 03-DEC-1 2 291 0.047 +1- 0.005 0.009 03-DEC-12 10-DEC-12 316 0.029 4-I- 0.004 0.007 10-DEC-12 17-DEC-12 299 0.053 +1- 0.005 0.018 17-DEC-12 26-DEC-12 389 0.054 +1- 0.004 0.009 26-DEC-12 31-DEC-12 212 0.048 +1- 0.006 0.019 31-DEC-12 07-JAN-13 321 0.045 +1- 0.005 0.013 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 8

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

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

27-DEC-i 1 03-JAN-12 312 0.016 +1- 0.004 0.010 03-JAN-1 2 09-JAN-1 2 260 0.019 +1- 0.004 0.012 09-JAN- 12 16-JAN-1 2 302 0.021 +1- 0.003 0.009 16-JAN-12 23-JAN-1 2 318 0.045 +1- 0.004 0.011 23-JAN- 12 30-JAN- 12 302 0.017 +1- 0.004 0.018 30-JAN-1 2 06-FEB-12 306 0.026 +1- 0.004 0.013 06-FEB-12 15-FEB-12 391 0.026 +1- 0.003 0.013 15-FEB-12 21-FEB-1 2 264 0.042 +1- 0.005 0.016 21-FEB-12 27-FEB-12 269 0.015 +1- 0.004 0.010 27-FEB-12 05-MAR- 12 295 0.023 +1- 0.004 0.010 05-MAR-1 2 12-MAR-12 300 0.019 +1- 0.004 0.017 12-MAR-12 19-MAR-12 292 0.020 +1- 0.004 0.014 19-MAR-12 26-MAR- 12 305 0.012 +1- 0.004 0.010 26-MAR- 12 02-APR-1 2 302 0.034 +1- 0.005 0.012 02-APR-1 2 09-APR- 12 299 0.024 +1- 0.004 0.013 09-APR- 12 16-APR-12 305 0.015 +1- 0.004 0.020 16-APR-12 24-APR-12 342 0.018 +1- 0.004 0.016 16-APR-12 24-APR-1 2 342 0.019 +1- 0.004 Duplicate 24-APR-1 2 30-APR-1 2 258 0.030 +1- 0.005 0.013 30-APR-1 2 08-MAY- 12 340 0.019 +1- 0.004 0.019 08-MAY-1 2 14-MAY-1 2 259 0.023 +1- 0.005 0.011 14-MAY-12 21-MAY-1 2 311 0.028 +1- 0.004 0.008 21-MAY-12 29-MAY- 12 329 0.026 +1- 0.004 0.010 29-MAY- 12 04-JUN-12 256 0.018 +1- 0.005 0.010 04-JUN-12 11-JUN-12 305 0.030 +1- 0.005 0.006 11-JUN-12 18-JUN-12 301 0.019 +1- 0.004 0.011 18-JUN-12 25-JUN-12 303 0.024 +1- 0.004 0.012 25-JUN-12 02-JUL-12 299 0.045 +1- 0.005 0.008 02-JUL-12 09-JUL-12 299 0.024 +1- 0.004 0.012 09-JUL-12 16-JUL-12 296 0.032 +1- 0.005 0.018 16-JUL-12 23-JUL-12 300 0.032 +1- 0.004 0.008 23-JUL-12 30-JUL-12 298 0.030 +1- 0.004 0.013 30-JUL-12 06-AUG-1 2 297 0.037 +1- 0.005 0.011 30-JUL-12 06-AUG-12 297 0.033 +1- 0.005 Duplicate 06-AUG-12 13-AUG-12 295 0.027 +1- 0.004 < 0.011 13-AUG- 12 20-AUG-12 299 0.023 +1- 0.004 < 0.011 20-AUG-1 2 27-AUG- 12 298 0.030 +1- 0.004 < 0.014 20-AUG-1 2 27-AUG-12 298 0.030 +1- 0.004 Duplicate 27-AUG-1 2 04-SEP-12 333 0.032 +1- 0.004 < 0.020 27-AUG-12 04-SEP-12 333 0.033 +1- 0.004 Duplicate 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 9

Air Particulate and Charcoal Filters Location: 049 Collection Collection Volume Gross Beta 1-131 Duplicate 3

Start Date End Date m Concentration Concentration Analysis (pCi/m33 ) (pCilm 3) 04-SEP-12 10-SEP-12 263 0.025 +1- 0.005 0.006 10-SEP-12 17-SEP-12 302 0.023 +1- 0.004 0.016 17-SEP-12 24-SEP-12 305 0.020 +1- 0.004 0.006 17-SEP-12 24-SEP-12 305 0.021 +1- 0.004 Duplicate 24-SEP-12 01-OCT-12 297 0.040 +1- 0.005 < 0.013 01-OCT-12 08-OCT-12 313 0.030 +1- 0.004 < 0.018 01-OCT-12 08-OCT- 12 313 0.034 +1- 0.005 Duplicate 08-OCT-12 15-OCT-12 304 0.039 +1- 0.005 0.015 15-OCT-12 22-OCT-12 298 0.032 +1- 0.005 0.011 22-OCT-12 29-OCT-1 2 310 0.028 +1- 0.004 0.012 29-OCT-12 05-NOV-12 310 0.059 +1- 0.005 0.011 05-NOV-1 2 12-NOV- 12 307 0.026 +1- 0.004 0.011 12-NOV-12 19-NOV-12 299 0.064 +1- 0.005 0.011 19-NOV-12 26-NOV-12 311 0.057 +1- 0.005 0.015 26-NOV-12 03-DEC-12 291 0.059 +1- 0.005 0.009 03-DEC-12 10-DEC-12 314 0.034 +1- 0.004 0.008 10-DEC-12 17-DEC-1 2 299 0.055 0.005 0.018 17-DEC-1 2 26-DEC-1 2 391 0.051 +1- 0.004 0.009 26-DEC-1 2 31-DEC-12 211 0.044 +1- 0.006 0.019 26-DEC-12 31-DEC-12 211 0.036 +1- 0.006 Duplicate 31-DEC-12 07-JAN-13 307 0.049 +1- 0.005 < 0.013 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 10

Air Particulate and Charcoal Filters Location: 053 Collection Collection Volume Gross Beta 1-131 Duplicate 3

Start Date End Date m Concentration Concentration Analysis (pCilm3 ) (pCilm 3 )

27-DEC-i 1 03-JAN-1 2 305 0.023 +1- 0.004 0.010 03-JAN- 12 09-JAN-1 2 259 0.020 +1- 0.004 0.012 09-JAN- 12 16-JAN-12 296 0.021 +1- 0.004 0.009 16-JAN-1 2 23-JAN-12 309 0.039 +1- 0.004 0.011 23-JAN-1 2 30-JAN- 12 305 0.014 +1- 0.003 0.018 30-JAN-12 06-FEB-12 306 0.018 +1- 0.004 0.013 06-FEB-1 2 15-FEB-1 2 386 0.025 +1- 0.003 0.013 15-FEB-12 21-FEB-1 2 254 0.034 +1- 0.005 0.017 21-FEB-12 27-FEB-12 261 0.011 +1- 0.004 0.010 21-FEB-1 2 27-FEB-12 261 0.015 +1- 0.004 Duplicate 27-FEB-12 05-MAR- 12 291 0.018 +1- 0.004 0.011 05-MAR- 12 12-MAR-12 304 0.020 +1- 0.004 0.017 12-MAR-1 2 19-MAR-1 2 293 0.023 +1- 0.004 0.014 19-MAR-1 2 26-MAR-1 2 302 0.012 +1- 0.004 0.010 26-MAR-1 2 02-APR-12 299 0.025 +1- 0.004 0.012 02-APR-12 09-APR-12 303 0.020 +1- 0.004 0.012 09-APR-12 16-APR- 12 298 0.016 +1- 0.005 0.021 16-APR- 12 24-APR-1 2 351 0.021 +1- 0.004 0.016 24-APR-1 2 30-APR-1 2 254 0.028 +1- 0.005 0.013 30-APR- 12 08-MAY-12 340 0.016 +1- 0.003 0.019 08-MAY- 12 14-MAY-1 2 256 0.024 +1- 0.005 0.011 14-MAY-12 21 -MAY-1 2 307 0.027 +1- 0.004 0.008 21-MAY-12 29-MAY-1 2 330 0.026 +1- 0.004 0.010 21 -MAY-1 2 29-MAY-1 2 330 0.026 +1- 0.004 Duplicate 29-MAY-1 2 04-JUN-12 257 0.017 +1- 0.005 0.010 04-JUN-12 11-JUN-12 300 0.024 +1- 0.004 0.006 11-JUN-12 18-JUN-12 304 0.019 +1- 0.004 0.011 18-JUN-12 25-JUN-12 299 0.020 +1- 0.004 0.012 18-JUN-12 25-JUN-12 299 0.018 +1- 0.004 Duplicate 25-JUN-12 02-JUL-12 300 0.043 +1- 0.005 0.008 02-JUL-12 09-JUL-12 300 0.021 +1- 0.004 0.012 09-JUL-12 16-JUL-12 297 0.031 +1- 0.005 0.018 16-JUL-12 23-JUL-12 295 0.027 +1- 0.004 0.009 23-JUL-12 30-JUL-12 298 0.024 +1- 0.004 0.013 30-JUL-12 06-AUG-12 295 0.031 +1- 0.005 0.011 06-AUG-12 13-AUG-12 299 0.026 +1- 0.004 0.011 13-AUG-12 20-AUG-12 297 0.024 +1- 0.004 0.011 20-AUG-12 27-AUG-12 300 0.030 +1- 0.004 0.014 27-AUG-1 2 04-SEP-12 338 0.032 +1- 0.004 0.020 04-SEP-1 2 10-SEP-12 260 0.025 +1- 0.005 0.006 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 11

Air Particulate and Charcoal Filters Location: 053 Collection Collection Volume Gross Beta 1-131 Duplicate 3

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

10-SEP-12 17-SEP-12 299 0.020 +1- 0.004 < 0.016 17-SEP-12 24-SEP-1 2 315 0.023 +1- 0.004 < 0.006 24-SEP-12 01-OCT-12 294 0.039 +1- 0.005 < 0.013 01-OCT-12 08-OCT-12 314 0.025 +1- 0.004 < 0.018 08-OCT-12 15-OCT-12 291 0.039 +1- 0.005 < 0.015 15-OCT-12 22-OCT-12 304 0.030 +1- 0.004 < 0.010 15-OCT-1 2 22-OCT-1 2 304 0.030 +1- 0.004 Duplicate 22-OCT-1 2 29-OCT-1 2 307 0.028 +1- 0.004 0.012 29-OCT- 12 05-NOV-1 2 299 0.054 +1- 0.005 0.011 05-NOV-12 12-NOV-12 307 0.029 +1- 0.004 0.011 12-NOV- 12 19-NOV-12 292 0.064 +1- 0.005 0.011 19-NOV- 12 26-NOV-1 2 299 0.052 +1- 0.005 0.015 26-NOV-1 2 03-DEC-12 300 0.049 +1- 0.005 0.009 03-DEC-12 10-DEC-12 308 0.032 +1- 0.004 0.008 10-DEC-12 17-DEC-12 301 0.056 +1- 0.005 0.018 17-DEC-12 26-DEC-1 2 386 0.053 +1- 0.004 0.009 26-DEC-1 2 31-DEC-1 2 188 0.042 +1- 0.007 0.021 31-DEC-1 2 07-JAN-1 3 304 0.052 +1- 0.005 0.013 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 12

Quarterly Air Particulate - Gamma Location: 002 02-APR-1 2 3 Nuclide Concentration (pCilm )

BE-7 0.073+/- 0.010 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-137 < 0.001 02-JUL-12 3 Nuclide Concentration (pCi/m )

BE-7 0.105+/- 0.015 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 01-OCT-1 2 3 Nuclide Concentration (pCilm )

BE-7 0.097+/- 0.013 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 31-DEC-1 2 3 Nuclide Concentration (pCilm )

BE-7 0.056+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 13

Quarterly Air Particulate - Gamma Location: 018 02-APR-1 2 Nuclide Concentration (pCi/m 3 )

BE-7 0.072+/- 0.016 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95

• 0.001 CS-134 < 0.001 CS-1 37 < 0.001 02-JUL-12 3 Nuclide Concentration (pCi/m )

BE-7 0.096+/- 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 01-OCT-1 2 3 Nuclide Concentration (pCi/m )

BE-7 0.089+/- 0.016 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 31-DEC-1 2 3 Nuclide Concentration (pCi/m )

BE-7 0.061+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001

• Duplicate Analysis 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 14

Quarterly Air Particulate - Gamma Location: 032 02-APR-1 2 Nuclide Concentration (pCi/m 3 )

BE-7 0.074+/- 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 02-JUL-12 3 Nuclide Concentration (pCilm )

BE-7 0.098+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 01-OCT-1 2 3 Nuclide Concentration (pCi/m )

BE-7 0.087+/- 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 31-DEC-12 3 Nuclide Concentration (pCi/m )

BE-7 0.059+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001

• Duplicate Analysis 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 15

Quarterly Air Particulate - Gamma Location: 037 02-APR-I 2 Nuclide Concentration (pCi/m 3 )

BE-7 0.088+/- 0.015 MN-54 < 0.001 CO-58

• 0.001 FE-59

• 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 02-JUL-12 Nuclide Concentration (pCi/m 3 )

BE-7 0.103+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 01-OCT-1 2 3 Nuclide Concentration (pCilm )

BE-7 0.096+/- 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 31-DEC-1 2 Nuclide Concentration (pCilm 3 )

BE-7 0.052+/- 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 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 16

Quarterly Air Particulate - Gamma Location: 049 02-APR-1 2 Nuclide Concentration (pCilm 3 )

BE-7 0.077+/- 0.012 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 02-JUL-12 3 Nuclide Concentration (pCi/m )

BE-7 0.103+/- 0.016 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-1 37 < 0.001 01-OCT-1 2 3 Nuclide Concentration (pCi/m )

BE-7 0.094+/- 0.016 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 31-DEC-1 2 3 Nuclide Concentration (pCi/m )

BE-7 0.059+/- 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-1 37 < 0.001

• Duplicate Analysis 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 17

Quarterly Air Particulate - Gamma Location: 053 02-APR-1 2 Nuclide Concentration (pCi/mr3 )

BE-7 0.082+/- 0.014 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.002 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 02-JUL-I 2 3 Nuclide Concentration (pCi/m )

BE-7 0.113+/- 0.017 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.002 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-134 < 0.001 CS-137 < 0.001 01-OCT-1 2 3 Nuclide Concentration (pCi/mr )

BE-7 0.098+/- 0.015 MN-54 < 0.001 CO-58 < 0.001 FE-59 < 0.001 CO-60 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 CS-1 34 < 0.001 CS-1 37 < 0.001 31-DEC-12 3 Nuclide Concentration (pCi/mr )

BE-7 0.065+/- 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-1 37 < 0.001

• Duplicate Analysis 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 18

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 23-JAN-1 2 MN-54 2.3 23-JAN-1 2 CO-58 3.7 23-JAN- 12 FE-59 5.8 23-JAN-12 CO-60 1.8 23-JAN-12 ZN-65 4.7 23-JAN-1 2 ZR-NB-95 4.0 23-JAN-1 2 1-131 4.0 23-JAN-1 2 CS-134 3.6 23-JAN-12 CS-137 3.8 23-JAN- 12 BA-LA- 140 3.1 23-JAN-12 H-3 146.0 27-FEB-1 2 MN-54 1.7 27-FEB-1 2 CO-58 2.1 27-FEB-12 FE-59 3.4 27-FEB-12 CO-60 2.7 27-FEB-12 ZN-65 2.8 27-FEB-12 ZR-NB-95 1.7 27-FEB-12 1-131 2.8 27-FEB-12 CS-134 2.5 27-FEB-12 CS-137 2.7 27-FEB-12 BA-LA-140 2.2 27-FEB-12 H-3 141.0 27-FEB-12 FE-55 194.0 26-MAR-12 MN-54 2.9 26-MAR-12 CO-58 2.1 26-MAR-1 2 FE-59 4.1 26-MAR-1 2 CO-60 3.0 26-MAR-1 2 ZN-65 2.7 26-MAR- 12 ZR-NB-95 2.4 26-MAR- 12 1-131 3.6 26-MAR- 12 CS-134 3.4 26-MAR- 12 CS-137 3.1 26-MAR-12 BA-LA-1 40 3.0 26-MAR-12 H-3 152.0 16-APR-12 MN-54 2.8 16-APR-1 2 CO-58 2.6 16-APR- 12 FE-59 4.9 16-APR-12 CO-60 1.8 16-APR-12 ZN-65 3.7 16-APR-12 ZR-NB-95 4.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 19

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 16-APR-12 1-131 4.3 16-APR-12 CS-134 2.5 16-APR- 12 CS-137 3.2 16-APR- 12 BA-LA-1 40 2.4 16-APR- 12 H-3 150.0 07-MAY- 12 MN-54 4.0 07-MAY-12 CO-58 3.4 07-MAY- 12 FE-59 3.6 07-MAY-12 CO-60 4.2 07-MAY-1 2 ZN-65 4.8 07-MAY-1 2 ZR-NB-95 3.1 07-MAY-1 2 1-131 5.7 07-MAY-1 2 CS-134 3.6 07-MAY- 12 CS-137 2.9 07-MAY- 12 BA-LA-140 4.6 07-MAY- 12 H-3 148.0 07-MAY-12 FE-55 175.0 11-JUN-12 MN-54 3.1 11-JUN-12 CO-58 3.1 11-JUN-12 FE-59 6.9 11-JUN-12 CO-60 2.6 11-JUN-12 ZN-65 5.5 11-JUN-12 ZR-NB-95 3.5 11-JUN-12 1-131 5.7 11-JUN-12 CS-134 2.8 11-JUN-12 CS-137 3.2 11-JUN-12 BA-LA-1 40 2.6 11-JUN-12 H-3 140.0 23-JUL-12 MN-54 3.0 23-JUL-12 CO-58 3.7 23-JUL-12 FE-59 5.2 23-JUL-12 CO-60 1.8 23-JUL-12 ZN-65 4.7 23-JUL-12 ZR-NB-95 3.1 23-JUL-12 1-131 5.5 23-JUL-12 CS-134 2.0 23-JUL-12 CS-137 2.9 23-JUL-12 BA-LA-1 40 3.9 23-JUL-12 H-3 156.0 20-AUG-12 MN-54 6.1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 20

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 20-AUG-12 CO-58 5.3 20-AUG-12 FE-59 6.0 20-AUG-1 2 CO-60 4.5 20-AUG-1 2 ZN-65 4.1 20-AUG-12 ZR-NB-95 3.6 20-AUG-12 1-131 4.9 20-AUG-12 CS-134 4.1 20-AUG-12 CS-137 3.2 20-AUG-12 BA-LA-140 7.1 20-AUG-12 H-3 150.0 20-AUG-12 FE-55 176.0 17-SEP-1 2 MN-54 2.9 17-SEP-1 2 CO-58 1.7 17-SEP-12 FE-59 5.5 17-SEP-12 CO-60 2.8 17-SEP-12 ZN-65 4.6 17-SEP-12 ZR-NB-95 2.9 17-SEP-12 1-131 5.0 17-SEP-12 CS-134 2.3 17-SEP-12 CS-137 2.1 17-SEP-1 2 BA-LA-140 2.9 17-SEP-1 2 H-3 154.0 29-OCT-1 2 MN-54 4.3 29-OCT-12 CO-58 2.2 29-OCT-12 FE-59 6.0 29-OCT-12 CO-60 3.5 29-OCT-12 ZN-65 4.4 29-OCT-12 ZR-NB-95 3.1 29-OCT-12 1-131 5.9 29-OCT-1 2 CS-134 3.6 29-OCT-1 2 CS-137 3.0 29-OCT-1 2 BA-LA- 140 2.5 29-OCT-1 2 H-3 151.0 14-NOV-12 MN-54 3.8 14-NOV-12 CO-58 3.1 14-NOV-12 FE-59 3.5 14-NOV-12 CO-60 3.6 14-NOV- 12 ZN-65 4.2 14-NOV- 12 ZR-NB-95 3.3 14-NOV-12 1-131 4.8 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 21

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV- 12 CS-134 2.9 14-NOV-12 CS-137 3.4 14-NOV-12 BA-LA-140 2.7 14-NOV-12 H-3 142.0 14-NOV-12 FE-55 167.0 10-DEC-12 MN-54 3.6 10-DEC-12 CO-58 2.7 10-DEC-12 FE-59 4.8 10-DEC-12 CO-60 4.0 10-DEC-1 2 ZN-65 4.2 10-DEC-1 2 ZR-NB-95 3.7 10-DEC-12 1-131 6.2 10-DEC-12 CS-134 3.1 10-DEC-12 CS-1 37 4.0 10-DEC-12 BA-LA- 140 2.7 10-DEC-12 H-3 150.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 22

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 23-JAN-1 2 MN-54 2.5 23-JAN- 12 CO-58 4.1 23-JAN- 12 FE-59 5.4 23-JAN- 12 CO-60 2.6 23-JAN-12 ZN-65 3.4 23-JAN-12 ZR-NB-95 3.8 23-JAN-1 2 1-131 4.3 23-JAN-1 2 CS-134 2.3 23-JAN-1 2 CS-137 4.0 23-JAN- 12 BA-LA- 140 3.3 23-JAN- 12 H-3 10,037+- 296.0 27-FEB-1 2 MN-54 3.4 27-FEB-1 2 CO-58 3.4 27-FEB-12 FE-59 8.5 27-FEB-12 CO-60 3.5 27-FEB-12 ZN-65 1.5 27-FEB-12 ZR-NB-95 3.2 27-FEB-12 1-131 3.9 27-FEB-1 2 CS-1 34 4.0 27-FEB-12 CS-1 37 2.6 27-FEB-12 BA-LA- 140 4.6 27-FEB-12 H-3 11,290+- 312.0 27-FEB-12 FE-55 175.0 26-MAR- 12 MN-54 2.4 26-MAR-12 CO-58 2.4 26-MAR-1 2 FE-59 4.5 26-MAR-12 CO-60 1.8 26-MAR- 12 ZN-65 2.2 26-MAR- 12 ZR-NB-95 1.7 26-MAR- 12 1-131 2.5 26-MAR-12 CS-134 2.7 26-MAR-12 CS-137 2.7 26-MAR-12 BA-LA- 140 2.1 26-MAR-1 2 H-3 12,151+1 325.0 16-APR-12 MN-54 1.9 16-APR-12 CO-58 1.7 16-APR- 12 FE-59 4.9 16-APR-12 CO-60 1.5 16-APR-12 ZN-65 3.5 16-APR-12 ZR-NB-95 1.7 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 23

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 16-APR-12 1-131 2.5 16-APR-12 CS-134 3.2 16-APR-12 CS-137 2.9 16-APR-12 BA-LA-140 2.3 16-APR- 12 H-3 12,545 +/- 333.0 07-MAY- 12 MN-54 3.7 07-MAY-1 2 CO-58 2.1 07-MAY-1 2 FE-59 4.1 07-MAY- 12 CO-60 2.4 07-MAY- 12 ZN-65 4.6 07-MAY- 12 ZR-NB-95 4.3 07-MAY- 12 1-131 7.3 07-MAY-1 2 CS-134 3.8 07-MAY- 12 CS-137 2.8 07-MAY- 12 BA-LA-140 3.5 07-MAY- 12 H-3 11,622+- 319.0 07-MAY- 12 FE-55 180.0 11-JUN-12 MN-54 2.3 11-JUN-12 CO-58 1.9 11-JUN-12 FE-59 3.9 11-JUN-12 CO-60 2.5 11-JUN-12 ZN-65 1.8 11-JUN-12 ZR-NB-95 2.0 11-JUN-12 1-131 3.8 11-JUN-12 CS-134 1.7 11-JUN-12 CS-137 2.6 11-JUN-12 BA-LA- 140 2.3 11-JUN-12 H-3 11,619+1 301.0 23-JUL-12 MN-54 2.2 23-JUL-12 CO-58 2.5 23-JUL-12 FE-59 3.8 23-JUL-12 CO-60 1.7 23-JUL-12 ZN-65 4.4 23-JUL-12 ZR-NB-95 1.8 23-JUL-12 1-131 3.8 23-JUL-12 CS-1 34 2.0 23-JUL-12 CS-137 2.6 23-JUL-12 BA-LA-140 2.8 23-JUL-12 H-3 12,145+- 331.0 20-AUG-1 2 MN-54 3.5 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 24

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 20-AUG-12 CO-58 4.1 20-AUG-12 FE-59 9.7 20-AUG-12 CO-60 5.7 20-AUG-12 ZN-65 6.6 20-AUG-12 ZR-NB-95 5.4 20-AUG-12 1-131 6.5 20-AUG-12 CS-134 4.6 20-AUG-12 CS-137 5.2 20-AUG-12 BA-LA-140 5.4 20-AUG-1 2 H-3 10,735+1 308.0 20-AUG-1 2 FE-55 174.0 17-SEP-12 MN-54 3.8 Duplicate 17-SEP-1 2 MN-54 2.1 17-SEP-1 2 CO-58 2.9 Duplicate 17-SEP-12 CO-58 2.9 17-SEP-12 FE-59 3.4 Duplicate 17-SEP-12 FE-59 4.8 17-SEP-12 CO-60 4.1 Duplicate 17-SEP-12 CO-60 3.2 17-SEP-12 ZN-65 4.6 Duplicate 17-SEP-12 ZN-65 7.0 17-SEP-12 ZR-NB-95 4.8 Duplicate 17-SEP-12 ZR-NB-95 3.8 17-SEP-12 1-131 5.8 Duplicate 17-SEP-12 1-131 6.0 17-SEP-12 CS-134 4.0 Duplicate 17-SEP-12 CS-134 2.7 17-SEP-12 CS-137 6.4 Duplicate 17-SEP-12 CS-137 3.8 17-SEP-12 BA-LA- 140 5.0 Duplicate 17-SEP-12 BA-LA- 140 3.3 17-SEP-12 H-3 10,817+1 310.0 Duplicate 17-SEP-12 H-3 10,909+- 311.0 29-OCT-1 2 MN-54 3.2 29-OCT-1 2 CO-58 3.0 29-OCT-12 FE-59 4.9 29-OCT-1 2 CO-60 4.1 29-OCT-12 ZN-65 4.9 29-OCT- 12 ZR-NB-95 2.4 29-OCT-12 1-131 6.5 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 25

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 29-OCT-12 CS-1 34 3.1 29-OCT-12 CS-1 37 3.9 29-OCT-12 BA-LA- 140 3.0 29-OCT-12 H-3 10,971 +/- 312.0 14-NOV- 12 MN-54 3.2 14-NOV- 12 CO-58 4.3 14-NOV- 12 FE-59 7.6 14-NOV-12 CO-60 4.6 14-NOV- 12 ZN-65 5.7 14-NOV- 12 ZR-NB-95 3.2 14-NOV-12 1-131 6.7 14-NOV-12 CS-134 4.7 14-NOV-12 CS-137 4.4 14-NOV-12 BA-LA- 140 2.3 14-NOV-12 H-3 11,404+- 297.0 14-NOV-12 FE-55 158.0 10-DEC-12 MN-54 3.0 10-DEC-12 CO-58 1.8 10-DEC-12 FE-59 3.0 10-DEC-12 CO-60 3.1 10-DEC-12 ZN-65 3.6 10-DEC-12 ZR-NB-95 3.4 10-DEC-12 1-131 6.4 10-DEC-12 CS-1 34 3.8 10-DEC-12 CS-1 37 4.0 10-DEC-12 BA-LA-140 3.5 10-DEC-12 H-3 11,791+1 317.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 26

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-FEB-12 MN-54 3.3 27-FEB-12 CO-58 3.9 27-FEB-12 FE-59 4.9 27-FEB-12 CO-60 2.3 27-FEB-12 ZN-65 3.9 27-FEB-12 ZR-NB-95 2.1 27-FEB-12 CS-134 3.8 27-FEB-12 CS-137 1.9 27-FEB-1 2 BA-LA- 140 1.6 27-FEB-1 2 H-3 141.0 27-FEB-1 2 1-131 (CHEM) 0.293 07-MAY- 12 MN-54 3.0 07-MAY- 12 CO-58 2.5 07-MAY- 12 FE-59 4.5 07-MAY- 12 CO-60 2.3 07-MAY- 12 ZN-65 2.5 07-MAY- 12 ZR-NB-95 2.5 07-MAY-1 2 CS-134 2.0 07-MAY-12 CS-137 2.7 07-MAY-1 2 BA-LA- 140 2.8 07-MAY-1 2 H-3 148.0 07-MAY-1 2 1-131 (CHEM) 0.349 20-AUG-1 2 MN-54 3.8 20-AUG-12 CO-58 2.6 20-AUG-1 2 FE-59 4.1 20-AUG-1 2 CO-60 1.9 20-AUG-1 2 ZN-65 4.1 20-AUG-1 2 ZR-NB-95 4.1 20-AUG-1 2 CS-134 2.8 20-AUG-1 2 CS-137 4.6 20-AUG-1 2 BA-LA- 140 3.6 20-AUG-12 H-3 150.0 20-AUG-12 1-131 (CHEM) 0.307 14-NOV-12 MN-54 3.2 14-NOV-1 2 CO-58 1.5 14-NOV- 12 FE-59 5.1 14-NOV- 12 CO-60 4.2 14-NOV- 12 ZN-65 3.6 14-NOV-12 ZR-NB-95 3.2 14-NOV-12 CS-1 34 2.9 14-NOV-12 CS-1 37 4.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 27

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV-12 BA-LA-140 < 2.9 14-NOV- 12 H-3 < 142.0 14-NOV-1 2 1-131 (CHEM) < 0.287 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 28

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-FEB-1 2 MN-54 2.2 27-FEB-1 2 CO-58 2.5 27-FEB-12 FE-59 4.6 27-FEB-12 CO-60 2.3 27-FEB-12 ZN-65 2.6 27-FEB-12 ZR-NB-95 2.1 27-FEB-12 CS-134 2.1 27-FEB-12 CS-137 2.8 27-FEB-12 BA-LA-140 1.3 27-FEB-12 H-3 141.0 27-FEB-12 1-131 (CHEM) 0.178 07-MAY-1 2 MN-54 2.2 07-MAY-1 2 CO-58 2.0 07-MAY-1 2 FE-59 4.8 07-MAY-1 2 CO-60 2.7 07-MAY-1 2 ZN-65 3.7 07-MAY- 12 ZR-NB-95 2.3 07-MAY-1 2 CS-134 3.0 07-MAY- 12 CS-1 37 2.9 07-MAY- 12 BA-LA-140 2.3 07-MAY-1 2 H-3 148.0 07-MAY-1 2 1-131 (CHEM) 0.356 20-AUG-12 MN-54 2.2 20-AUG-12 CO-58 2.5 20-AUG-12 FE-59 2.8 20-AUG-12 CO-60 3.4 20-AUG-12 ZN-65 3.6 20-AUG-12 ZR-NB-95 2.6 20-AUG-12 CS-134 2.3 20-AUG-12 CS-137 2.1 20-AUG-12 BA-LA-140 2.3 20-AUG-12 H-3 150.0 20-AUG-12 1-131 (CHEM) 0.243 14-NOV-12 MN-54 3.5 14-NOV-12 CO-58 3.9 14-NOV-12 FE-59 7.3 14-NOV-12 CO-60 2.6 14-NOV-12 ZN-65 4.1 14-NOV-12 ZR-NB-95 2.5 14-NOV- 12 CS-134 3.3 14-NOV- 12 CS-1 37 3.1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 29

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV- 12 BA-LA-140 < 3.1 14-NOV- 12 H-3 < 142.0 14-NOV- 12 1-131 (CHEM) < 0.445 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 30

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-FEB-12 MN-54 4.1 27-FEB-12 CO-58 4.0 27-FEB-12 FE-59 3.7 27-FEB-1 2 CO-60 2.2 27-FEB-12 ZN-65 4.6 27-FEB-12 ZR-NB-95 4.6 27-FEB-12 CS-134 3.0 27-FEB-12 CS-137 2.7 27-FEB-12 BA-LA- 140 4.0 27-FEB-12 H-3 141.0 27-FEB-12 1-131 (CHEM) 0.244 07-MAY-1 2 MN-54 3.6 07-MAY-1 2 CO-58 3.9 07-MAY- 12 FE-59 5.6 07-MAY- 12 CO-60 2.9 07-MAY- 12 ZN-65 6.0 07-MAY- 12 ZR-NB-95 2.3 07-MAY- 12 CS-134 3.6 07-MAY- 12 CS-137 5.0 07-MAY-1 2 BA-LA- 140 1.6 07-MAY- 12 H-3 148.0 07-MAY-1 2 1-131 (CHEM) 0.321 20-AUG-1 2 MN-54 3.2 20-AUG-1 2 CO-58 3.7 20-AUG-1 2 FE-59 6.2 20-AUG-1 2 CO-60 3.2 20-AUG-1 2 ZN-65 9.6 20-AUG-1 2 ZR-NB-95 2.3 20-AUG-1 2 CS-134 3.4 20-AUG-1 2 CS-1 37 4.1 20-AUG-12 BA-LA- 140 3.4 20-AUG-12 H-3 150.0 20-AUG-12 1-131 (CHEM) 0.48 14-NOV-12 MN-54 1.9 14-NOV-12 CO-58 1.6 14-NOV-12 FE-59 5.2 14-NOV-12 CO-60 2.5 14-NOV- 12 ZN-65 4.4 14-NOV- 12 ZR-NB-95 3.6 14-NOV- 12 CS-134 2.1 14-NOV- 12 CS-1 37 2.1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 31

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV-12 BA-LA-140 < 3.6 14-NOV-12 H-3 < 142.0 14-NOV-12 1-131 (CHEM) < 0.461 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 32

Exposure Pathway - Waterborne Ground Water Location F-1 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 27-FEB-12 MN-54 2.7 27-FEB-12 CO-58 1.6 27-FEB-12 FE-59 2.6 27-FEB-1 2 CO-60 1.9 27-FEB-12 ZN-65 4.4 27-FEB-12 ZR-NB-95 2.5 27-FEB-12 CS-1 34 2.2 27-FEB-12 CS-1 37 3.0 27-FEB-12 BA-LA-140 2.0 27-FEB-12 H-3 141.0 27-FEB-12 1-131 (CHEM) 0.177 07-MAY-1 2 MN-54 1.8 07-MAY-1 2 CO-58 1.5 07-MAY- 12 FE-59 3.0 07-MAY- 12 CO-60 0.9 07-MAY- 12 ZN-65 3.9 07-MAY- 12 ZR-NB-95 3.0 07-MAY- 12 CS-134 2.8 07-MAY- 12 CS-137 3.0 07-MAY- 12 BA-LA- 140 1.3 07-MAY- 12 H-3 148.0 07-MAY- 12 1-131 (CHEM) 0.44 20-AUG-12 MN-54 2.7 20-AUG-12 CO-58 4.1 20-AUG-12 FE-59 7.5 20-AUG-12 CO-60 1.9 20-AUG-12 ZN-65 6.7 20-AUG-12 ZR-NB-95 3.0 20-AUG-12 CS-134 2.4 20-AUG-12 CS-137 3.2 20-AUG-12 BA-LA- 140 4.1 20-AUG-12 H-3 150.0 20-AUG-1 2 1-131 (CHEM) 0.242 14-NOV-12 MN-54 3.2 14-NOV- 12 CO-58 2.4 14-NOV-12 FE-59 5.2 14-NOV-12 CO-60 2.6 14-NOV- 12 ZN-65 2.6 14-NOV- 12 ZR-NB-95 3.3 14-NOV- 12 CS-1 34 3.3 14-NOV- 12 CS-137 3.4 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 33

Exposure Pathway - Waterborne Ground Water Location F-1 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV- 12 BA-LA- 140 < 2.7 14-NOV-12 H-3 < 142.0 14-NOV-12 1-131 (CHEM) < 0.437 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 34

Exposure Pathway - Waterborne Ground Water Location G-2 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 27-FEB-12 MN-54 3.0 27-FEB-12 CO-58 2.0 27-FEB-12 FE-59 7.9 27-FEB-12 CO-60 3.5 27-FEB-12 ZN-65 7.5 27-FEB-1 2 ZR-NB-95 2.6 27-FEB-12 CS-134 3.2 27-FEB-12 CS-137 2.3 27-FEB-12 BA-LA- 140 4.1 27-FEB-12 H-3 141.0 27-FEB-12 1-131 (CHEM) 0.35 07-MAY-12 MN-54 2.9 07-MAY-1 2 CO-58 3.9 07-MAY-1 2 FE-59 5.7 07-MAY- 12 CO-60 4.0 07-MAY- 12 ZN-65 6.7 07-MAY-12 ZR-NB-95 3.6 07-MAY-12 CS-134 2.9 07-MAY-12 CS-137 4.1 07-MAY-1 2 BA-LA- 140 3.3 07-MAY-1 2 H-3 148.0 07-MAY- 12 1-131 (CHEM) 0.453 20-AUG-12 MN-54 3.4 20-AUG-12 CO-58 2.7 20-AUG-12 FE-59 4.8 20-AUG-1 2 CO-60 3.7 20-AUG-1 2 ZN-65 8.1 20-AUG-12 ZR-NB-95 5.5 20-AUG-12 CS-1 34 3.5 20-AUG-12 CS-1 37 2.4 20-AUG-12 BA-LA- 140 2.4 20-AUG-12 H-3 150.0 20-AUG-1 2 1-131 (CHEM) 0.344 14-NOV-12 MN-54 2.8 14-NOV-12 CO-58 2.4 14-NOV-12 FE-59 5.9 14-NOV-12 CO-60 2.5 14-NOV- 12 ZN-65 2.6 14-NOV- 12 ZR-NB-95 3.9 14-NOV-12 CS-134 2.5 14-NOV-12 CS-1 37 2.9 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 35

Exposure Pathway - Waterborne Ground Water Location G-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV-12 BA-LA-140 < 3.7 14-NOV-12 H-3 < 142.0 14-NOV-12 1-131 (CHEM) < 0.417 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 36

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-FEB-12 MN-54 3.5 27-FEB-12 CO-58 3.3 27-FEB-12 FE-59 5.4 27-FEB-12 CO-60 2.3 27-FEB-12 ZN-65 7.2 27-FEB-12 ZR-NB-95 5.1 27-FEB-1 2 CS-134 2.7 27-FEB-1 2 CS-137 2.4 27-FEB-12 BA-LA-140 2.5 27-FEB-12 H-3 141.0 27-FEB-12 1-131 (CHEM) 0.241 07-MAY-1 2 MN-54 2.1 07-MAY-1 2 CO-58 2.7 07-MAY-1 2 FE-59 3.8 07-MAY-1 2 CO-60 1.8 07-MAY-1 2 ZN-65 5.3 07-MAY-1 2 ZR-NB-95 2.0 07-MAY-12 CS-1 34 2.8 07-MAY-1 2 CS-137 2.9 07-MAY- 12 BA-LA-140 2.6 07-MAY- 12 H-3 148.0 07-MAY- 12 1-131 (CHEM) 0.391 20-AUG-12 MN-54 3.8 20-AUG-12 CO-58 2.7 20-AUG-12 FE-59 3.4 20-AUG-12 CO-60 4.6 20-AUG-12 ZN-65 5.1 20-AUG-12 ZR-NB-95 4.7 20-AUG-12 CS-134 6.3 20-AUG-1 2 CS-137 4.8 20-AUG-1 2 BA-LA-140 4.7 20-AUG-12 H-3 150.0 20-AUG-1 2 1-131 (CHEM) 0.374 14-NOV-12 MN-54 2.2 14-NOV-12 CO-58 2.6 14-NOV-12 FE-59 3.2 14-NOV-12 CO-60 2.6 14-NOV-12 ZN-65 5.2 14-NOV-12 ZR-NB-95 5.2 14-NOV-12 CS-1 34 2.6 14-NOV-12 CS-137 3.2 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 37

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV-12 BA-LA-140

• 4.3 14-NOV-12 H-3 < 142.0 14-NOV- 12 1-131 (CHEM) < 0.39 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 38

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-FEB-12 MN-54 1.8 27-FEB-12 CO-58 2.2 27-FEB-12 FE-59 6.0 27-FEB-12 CO-60 1.7 27-FEB-12 ZN-65 6.2 27-FEB-12 ZR-NB-95 2.5 27-FEB-12 CS-134 2.1 27-FEB-12 CS-1 37 2.1 27-FEB-12 BA-LA-140 2.3 27-FEB-12 H-3 141.0 27-FEB-12 1-131 (CHEM) 0.237 07-MAY- 12 MN-54 1.8 07-MAY- 12 CO-58 2.8 07-MAY- 12 FE-59 3.5 07-MAY- 12 CO-60 2.5 07-MAY- 12 ZN-65 5.4 07-MAY- 12 ZR-NB-95 2.9 07-MAY-1 2 CS-1 34 2.7 07-MAY-1 2 CS-137 3.0 07-MAY-12 BA-LA-140 1.9 07-MAY- 12 H-3 148.0 07-MAY- 12 1-131 (CHEM) 0.338 20-AUG-12 MN-54 2.9 20-AUG-12 MN-54 4.3 Duplicate 20-AUG-12 CO-58 3.6 20-AUG-12 CO-58 2.2 Duplicate 20-AUG-1 2 FE-59 4.1 20-AUG-1 2 FE-59 6.5 Duplicate 20-AUG-1 2 CO-60 2.7 20-AUG-1 2 CO-60 3.3 Duplicate 20-AUG-12 ZN-65 5.8 20-AUG-12 ZN-65 8.3 Duplicate 20-AUG-12 ZR-NB-95 2.5 20-AUG-12 ZR-NB-95 4.1 Duplicate 20-AUG-12 CS-134 3.1 20-AUG-12 CS-1 34 3.4 Duplicate 20-AUG-12 CS-1 37 2.9 20-AUG-1 2 CS-1 37 4.7 Duplicate 20-AUG-1 2 BA-LA-140 2.4 20-AUG-1 2 BA-LA-140 4.2 Duplicate 20-AUG-1 2 H-3 150.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 39

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 20-AUG-12 H-3 150.0 Duplicate 20-AUG-12 1-131 (CHEM) 0.343 20-AUG-12 1-131 (CHEM) 0.457 Duplicate 14-NOV-12 MN-54 2.5 14-NOV-12 CO-58 1.5 14-NOV-12 FE-59 4.8 14-NOV-12 CO-60 1.6 14-NOV-1 2 ZN-65 4.7 14-NOV-12 ZR-NB-95 2.4 14-NOV-12 CS-134 2.4 14-NOV-12 CS-137 3.2 14-NOV-12 BA-LA- 140 3.0 14-NOV-12 H-3 142.0 14-NOV-12 1-131 (CHEM) 0.399 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 40

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 27-FEB-12 MN-54 2.6 27-FEB-12 CO-58 3.0 27-FEB-12 FE-59 3.4 27-FEB-12 CO-60 1.8 27-FEB-1 2 ZN-65 4.1 27-FEB-1 2 ZR-NB-95 3.4 27-FEB-12 CS-134 2.8 27-FEB-12 CS-137 3.4 27-FEB-12 BA-LA- 140 3.1 27-FEB-12 H-3 141.0 27-FEB-12 1-131 (CHEM) 0.33 07-MAY- 12 MN-54 2.5 07-MAY- 12 CO-58 1.8 07-MAY- 12 FE-59 3.6 07-MAY- 12 CO-60 0.8 07-MAY- 12 ZN-65 5.2 07-MAY-12 ZR-NB-95 2.8 07-MAY-1 2 CS-134 2.8 07-MAY-1 2 CS-1 37 3.1 07-MAY-1 2 BA-LA- 140 2.2 07-MAY-1 2 H-3 148.0 07-MAY- 12 1-131 (CHEM) 0.313 20-AUG-12 MN-54 2.8 20-AUG-12 CO-58 2.8 20-AUG-12 FE-59 3.5 20-AUG-12 CO-60 2.3 20-AUG-12 ZN-65 4.9 20-AUG-1 2 ZR-NB-95 2.7 20-AUG-12 CS-134 2.7 20-AUG-1 2 CS-137 3.0 20-AUG-12 BA-LA- 140 1.0 20-AUG-12 H-3 150.0 20-AUG-12 1-131 (CHEM) 0.442 14-NOV-12 MN-54 2.2 14-NOV-12 CO-58 1.1 14-NOV-12 FE-59 3.2 14-NOV- 12 CO-60 2.7 14-NOV- 12 ZN-65 3.3 14-NOV- 12 ZR-NB-95 2.7 14-NOV- 12 CS-134 2.4 14-NOV-12 CS-1 37 2.6 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 41

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 14-NOV-12 BA-LA-140 < 2.3 14-NOV- 12 H-3 < 142.0 14-NOV-12 1-131 (CHEM) < 0.259 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 42

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 06-FEB-1 2 MN-54 3.3 06-FEB-1 2 CO-58 4.1 06-FEB-1 2 FE-59 5.4 06-FEB-1 2 CO-60 3.4 06-FEB-12 ZN-65 4.1 06-FEB-12 ZR-NB-95 2.7 06-FEB-12 CS-134 4.5 06-FEB-12 CS-137 3.0 06-FEB-12 BA-LA- 140 5.1 06-FEB-12 GROSS BETA 3.346 +/- 0.714 06-FEB-12 1-131 (CHEM) 0.323 05-MAR- 12 MN-54 2.7 05-MAR-12 CO-58 1.7 05-MAR-12 FE-59 3.7 05-MAR-12 CO-60 1.4 05-MAR-1 2 ZN-65 1.7 05-MAR-1 2 ZR-NB-95 2.4 05-MAR-1 2 CS-1 34 1.8 05-MAR-12 CS-137 2.7 05-MAR-1 2 BA-LA- 140 1.4 05-MAR-1 2 GROSS BETA 3.154 +/- 0.701 05-MAR-1 2 1-131 (CHEM) 0.257 02-APR-1 2 MN-54 2.8 02-APR-1 2 CO-58 3.2 02-APR-1 2 FE-59 5.9 02-APR-1 2 CO-60 2.0 02-APR-1 2 ZN-65 5.8 02-APR- 12 ZR-NB-95 2.3 02-APR- 12 CS-134 3.0 02-APR- 12 CS-137 2.6 02-APR-12 BA-LA-140 1.8 02-APR-12 GROSS BETA 2.513 +/- 0.654 02-APR-12 1-131 (CHEM) 0.283 07-MAY-12 MN-54 1.9 07-MAY-12 CO-58 1.5 07-MAY-12 FE-59 3.8 07-MAY-12 CO-60 1.0 07-MAY-12 ZN-65 2.7 07-MAY-1 2 ZR-NB-95 2.3 07-MAY-12 CS-134 3.1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 43

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 07-MAY- 12 CS-1 37 < 3.0 07-MAY- 12 BA-LA-1 40 2.6 07-MAY- 12 GROSS BETA 3.388 +/- 0.709 07-MAY-12 1-131 (CHEM) 0.303 04-JUN-12 MN-54 3.6 04-JUN-12 CO-58 2.3 04-JUN-12 FE-59 < 4.8 04-JUN-12 CO-60 < 2.6 04-JUN-12 ZN-65 < 2.7 04-JUN-12 ZR-NB-95 < 1.7 04-JUN-12 CS-134 < 2.7 04-JUN-12 CS-1 37 < 3.1 04-JUN-12 BA-LA-1 40 < 1.3 04-JUN-12 GROSS BETA 2.076+/- 0.608 04-JUN-12 1-131 (CHEM) < 0.303 02-JUL-12 MN-54 < 3.0 02-JUL-12 CO-58 < 1.8 02-JUL-12 FE-59 < 3.9 02-JUL-1 2 CO-60 < 2.4 02-JUL-12 ZN-65 < 3.3 02-JUL-12 ZR-NB-95 < 2.2 02-JUL-12 CS-134 < 1.9 02-JUL-12 CS-137 2.3 02-JUL-12 BA-LA- 140 2.2 02-JUL-12 GROSS BETA 1.834+/- 0.6 02-JUL-12 1-131 (CHEM) 0.302 06-AUG- 12 MN-54 < 2.8 06-AUG- 12 CO-58 < 3.1 06-AUG- 12 FE-59 < 6.6 06-AUG-12 CO-60 < 1.9 06-AUG-12 ZN-65 < 5.1 06-AUG-1 2 ZR-NB-95 < 2.3 06-AUG-1 2 CS-134 < 3.2 06-AUG-1 2 CS-137 4.3 06-AUG-1 2 BA-LA- 140 2.8 06-AUG-12 GROSS BETA 1.239+/- 0.556 06-AUG-1 2 1-131 (CHEM) 0.168 04-SEP-12 MN-54 3.2 04-SEP-12 GRAB MN-54 2.1 04-SEP-12 CO-58 2.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 44

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 04-SEP-12 GRAB CO-58 < 1.8 04-SEP-12 FE-59 < 7.6 04-SEP-12 GRAB FE-59 < 2.4 04-SEP-12 CO-60 < 3.1 04-SEP-12 GRAB CO-60 < 1.8 04-SEP-12 ZN-65 < 7.6 04-SEP-12 GRAB ZN-65 < 3.5 04-SEP-12 ZR-NB-95 < 4.0 04-SEP-12 GRAB ZR-NB-95 < 1.5 04-SEP-12 CS-134 < 3.4 04-SEP-12 GRAB CS-134 < 2.6 04-SEP-12 CS-137 < 3.8 04-SEP-12 GRAB CS-137 < 2.8 04-SEP-12 BA-LA- 140 < 3.7 04-SEP-12 GRAB BA-LA- 140 2.9 04-SEP-12 GROSS BETA 3.702 +/- 0.739 04-SEP-12 GRAB GROSS BETA 4.021 +/- 0.781 04-SEP-12 1-131 (CHEM) 0.304 04-SEP-12 GRAB 1-131 (CHEM) 0.279 01-OCT- 12 MN-54 4.2 01-OCT-12 CO-58 3.3 01-OCT-12 FE-59 5.4 01-OCT-12 CO-60 3.3 01-OCT-12 ZN-65 5.8 01-OCT-12 ZR-NB-95 2.6 01-OCT-12 CS-134 4.6 01-OCT-12 CS-137 3.3 01-OCT-12 BA-LA-140 5.6 01-OCT-12 GROSS BETA 3.150 +/- 0.713 01-OCT-12 1-131 (CHEM) 0.326 05-NOV-12 MN-54 3.8 05-NOV-12 CO-58 < 2.9 05-NOV-12 FE-59 < 4.7 05-NOV-1 2 CO-60 < 3.6 05-NOV-1 2 ZN-65 < 7.0 05-NOV-12 ZR-NB-95 < 4.6 05-NOV-1 2 CS-1 34 < 2.5 05-NOV-1 2 CS-1 37 < 5.4 05-NOV-12 BA-LA-1 40 < 2.9 05-NOV-12 GROSS BETA 2.935 +/- 0.679 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 45

Exposure Pathway - Waterborne Drinking Water Location BW-1 5 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 05-NOV-12 1-131 (CHEM) 0.494 03-DEC-12 MN-54 3.1 03-DEC-12 CO-58 2.2 03-DEC-12 FE-59 5.2 03-DEC-12 CO-60 3.0 03-DEC-1 2 ZN-65 5.5 03-DEC-1 2 ZR-NB-95 2.2 03-DEC-1 2 CS-1 34 2.5 03-DEC-1 2 CS-137 3.8 03-DEC-1 2 BA-LA-1 40 2.2 03-DEC-1 2 GROSS BETA 2.387 +/- 0.656 03-DEC-12 1-131 (CHEM) 0.409 07-JAN- 13 MN-54 2.4 07-JAN-13 CO-58 2.1 07-JAN-13 FE-59 3.7 07-JAN-13 CO-60 2.4 07-JAN-13 ZN-65 1.5 07-JAN-13 ZR-NB-95 2.9 07-JAN-13 CS-134 2.3 07-JAN-13 CS-137 2.4 07-JAN-1 3 BA-LA-140 2.0 07-JAN-1 3 GROSS BETA 2.988 +/- 0.715 07-JAN-1 3 1-131 (CHEM) 0.286 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 46

Exposure Pathway - Waterborne Drinking Water Location 1O-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 06-FEB-12 MN-54 < 2.8 06-FEB-12 CO-58 < 2.2 06-FEB-12 FE-59 4.4 06-FEB-12 CO-60 1.2 06-FEB-12 ZN-65 2.7 06-FEB-12 ZR-NB-95 3.0 06-FEB-12 CS-1 34 2.1 06-FEB-12 CS-137 2.0 06-FEB-1 2 BA-LA-140 2.8 06-FEB-12 GROSS BETA 2.906+/- 0.694 06-FEB-12 1-131 (CHEM) 0.336 05-MAR-1 2 MN-54 2.5 05-MAR- 12 CO-58 2.1 05-MAR- 12 FE-59 2.7 05-MAR- 12 CO-60 1.0 05-MAR- 12 ZN-65 1.5 05-MAR- 12 ZR-NB-95 2.7 05-MAR- 12 CS-134 2.2 05-MAR- 12 CS-1 37 2.1 05-MAR- 12 BA-LA-140 3.1 05-MAR- 12 GROSS BETA 3.565 +/- 0.736 05-MAR-12 1-131 (CHEM) 0.275 02-APR-12 MN-54 2.5 02-APR-1 2 CO-58 3.3 02-APR-1 2 FE-59 3.0 02-APR-12 CO-60 1.6 02-APR-1 2 ZN-65 4.6 02-APR-1 2 ZR-NB-95 2.6 02-APR-1 2 CS-134 2.5 02-APR-1 2 CS-137 2.4 02-APR-1 2 BA-LA-140 3.8 02-APR-1 2 GROSS BETA 2.595 +/- 0.682 02-APR-12 1-131 (CHEM) 0.378 07-MAY-12 MN-54 3.6 07-MAY-12 CO-58 1.6 07-MAY-12 FE-59 2.5 07-MAY-12 CO-60 2.6 07-MAY-12 ZN-65 1.7 07-MAY-12 ZR-NB-95 2.7 07-MAY-12 CS-134 1.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 47

Exposure Pathway - Waterborne Drinking Water Location 1O-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 07-MAY-1 2 CS-1 37 2.9 07-MAY-1 2 BA-LA- 140 1.3 07-MAY- 12 GROSS BETA 3.237+/- 0.705 07-MAY- 12 1-131 (CHEM) 0.318 04-JUN-12 MN-54 < 1.6 04-JUN-12 CO-58 < 1.7 04-JUN-12 FE-59 2.7 04-JUN-12 CO-60 1.2 04-JUN-12 ZN-65 4.2 04-JUN-12 ZR-NB-95 3.5 04-JUN-12 CS-134 2.4 04-JUN-12 CS-137 2.9 04-JUN-12 BA-LA- 140 1.4 04-JUN-12 GROSS BETA 2.788+/- 0.673 04-JUN-12 1-131 (CHEM) 0.3 02-JUL-12 MN-54 2.0 02-JUL-12 CO-58 2.4 02-JUL-12 FE-59 2.6 02-JUL-12 CO-60 1.6 02-JUL-12 ZN-65 3.1 02-JUL-12 ZR-NB-95 3.0 02-JUL-12 CS-134 2.3 02-JUL-12 CS-137 2.7 02-JUL-12 BA-LA- 140 1.9 02-JUL-12 GROSS BETA 3.000+/- 0.7 02-JUL-12 1-131 (CHEM) 0.319 06-AUG-12 MN-54 2.9 06-AUG- 12 CO-58 3.3 06-AUG-12 FE-59 7.8 06-AUG- 12 CO-60 3.0 06-AUG-12 ZN-65 2.4 06-AUG-12 ZR-NB-95 2.2 06-AUG-12 CS-134 3.5 06-AUG-12 CS-137 3.3 06-AUG-12 BA-LA- 140 3.6 06-AUG-1 2 GROSS BETA 2.062+/- 0.626 06-AUG-1 2 1-131 (CHEM) 0.143 04-SEP-12 MN-54 2.6 04-SEP-1 2 CO-58 3.5 04-SEP-12 FE-59 7.5 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 48

Exposure Pathway - Waterborne Drinking Water Location IO-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 04-SEP-12 CO-60 < 2.4 04-SEP-12 ZN-65 < 6.6 04-SEP-12 ZR-NB-95 < 3.8 04-SEP-12 CS-134 < 3.6 04-SEP-12 CS-137 < 3.3 04-SEP-12 BA-LA-140 < 3.8 04-SEP-12 GROSS BETA 3.046 +/- 0.727 04-SEP-12 1-131 (CHEM) 0.194 01-OCT-12 MN-54 1.9 01-OCT-12 CO-58 2.9 01-OCT-12 FE-59 4.5 01-OCT-12 CO-60 1.9 01-OCT-12 ZN-65 2.3 01-OCT-12 ZR-NB-95 1.9 01-OCT-12 CS-134 2.6 01-OCT-12 CS-137 3.2 01-OCT-12 BA-LA-140 3.0 01-OCT-12 GROSS BETA 3.749 +/- 0.749 01-OCT-12 1-131 (CHEM) 0.321 05-NOV-12 MN-54 < 3.2 05-NOV-12 CO-58 < 1.5 05-NOV-12 FE-59 < 2.8 05-NOV-12 CO-60 < 1.8 05-NOV-12 ZN-65 < 5.0 05-NOV-12 ZR-NB-95 < 1.9 05-NOV-12 CS-1 34 < 2.4 05-NOV-12 CS-1 37 < 2.4 05-NOV-12 BA-LA-140 < 1.9 05-NOV-12 GROSS BETA 3.329+/- 0.711 05-NOV-1 2 1-131 (CHEM) < 0.36 03-DEC-12 MN-54 < 2.6 03-DEC-1 2 CO-58 < 4.0 03-DEC-1 2 FE-59 < 7.7 03-DEC-1 2 CO-60 < 3.5 03-DEC-1 2 ZN-65 < 6.5 03-DEC-12 ZR-NB-95 < 2.3 03-DEC-1 2 CS-134 < 3.5 03-DEC-12 CS-137 4.8 03-DEC-12 BA-LA-1 40 2.6 03-DEC-12 GROSS BETA 3.003 +/- 0.694 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 49

Exposure Pathway - Waterborne Drinking Water Location 10-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 03-DEC-12 1-131 (CHEM) 0.414 07-JAN-13 MN-54 2.1 07-JAN-13 CO-58 2.5 07-JAN-13 FE-59 1.8 07-JAN-13 CO-60 1.7 07-JAN-13 ZN-65 3.9 07-JAN-1 3 ZR-NB-95 1.7 07-JAN-1 3 CS-134 2.1 07-JAN-1 3 CS-1 37 2.9 07-JAN-1 3 BA-LA-1 40 1.6 07-JAN-13 GROSS BETA 2.408 +/- 0.635 07-JAN-13 1-131 (CHEM) 0.313 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 50

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location BW-15 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 02-APR-12 H-3 < 143 02-JUL-12 H-3 < 148 01-OCT-12 H-3 < 150 07-JAN-13 H-3 < 137 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 51

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location IO-DW Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 02-APR-1 2 H-3 222 +/- 83 02-JUL-12 H-3 < 148 01-OCT- 12 H-3 < 150 07-JAN-1 3 H-3 < 137 07-JAN-1 3 H-3 < 137 Duplicate 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 52

Exposure Pathway - Waterborne Shoreline Sediment Location DC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY- 12 K-40 8,464.3 +/- 914.7 02-MAY-12 MN-54

• 41.1 02-MAY-1 2 CO-58

• 49.6 02-MAY-1 2 FE-59

• 81.1 02-MAY-1 2 CO-60

• 17.2 02-MAY- 12 ZN-65 < 104.5 02-MAY- 12 CS-134

• 35.2 02-MAY- 12 CS-137

• 48.2 29-NOV-12 K-40 6,047.9 +/- 384.0 Duplicate 29-NOV-1 2 K-40 6,074.1 +/- 461.5 29-NOV-12 MN-54 < 17.0 Duplicate 29-NOV-1 2 MN-54 < 19.5 29-NOV-1 2 CO-58 < 16.0 Duplicate 29-NOV-1 2 CO-58 < 19.0 29-NOV-12 FE-59 < 23.9 Duplicate 29-NOV-12 FE-59 < 47.3 29-NOV-12 CO-60 < 7.2 Duplicate 29-NOV-12 CO-60 < 9.5 29-NOV-1 2 ZN-65 < 33.9 Duplicate 29-NOV-12 ZN-65 < 33.6 29-NOV-1 2 CS-134 < 14.6 Duplicate 29-NOV-1 2 CS-134 < 13.1 29-NOV-12 CS-137 < 12.9 Duplicate 29-NOV-12 CS-137 < 17.1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 53

Exposure Pathway - Waterborne Shoreline Sediment Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 29-MAY- 12 K-40 8,620.8 +/- 993.9 29-MAY-1 2 MN-54

• 49.6 29-MAY-1 2 CO-58

• 20.8 29-MAY-1 2 FE-59

• 65.0 29-MAY- 12 CO-60

• 28.1 29-MAY- 12 ZN-65

• 73.1 29-MAY- 12 CS-134

• 36.3 29-MAY- 12 CS-1 37 234.3 +/- 58.9 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 54

Exposure Pathway - Waterborne Shoreline Sediment Location JRR Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY-12 K-40 10,239.0 +/- 678.5 02-MAY- 12 MN-54 27.7 02-MAY- 12 CO-58 30.4 02-MAY- 12 FE-59 67.3 02-MAY- 12 CO-60 19.0 02-MAY- 12 ZN-65 44.4 02-MAY-1 2 CS-134 15.5 02-MAY-1 2 CS-137 24.7 19-NOV-12 K-40 6,356.2+- 415.4 19-NOV- 12 MN-54 15.1 19-NOV- 12 CO-58 17.8 19-NOV-12 FE-59 46.9 19-NOV-12 CO-60 8.7 19-NOV- 12 ZN-65 41.0 19-NOV-12 CS-134 14.2 19-NOV-12 CS-1 37 16.9 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 55

Exposure Pathway - Waterborne Shoreline Sediment Location SC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCilKg Dry) 03-OCT-12 K-40 12,147.0 +/-. 772.7 03-OCT-12 MN-54

• 26.8 03-OCT-1 2 CO-58

• 29.4 03-OCT-1 2 FE-59

• 39.7 03-OCT-1 2 CO-60

• 28.0 03-OCT-1 2 ZN-65

• 52.6 03-OCT- 12 CS-134

• 20.7 03-OCT-12 CS-1 37 75.8 +/- 29.2 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 56

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCilKg Wet) 22-MAY- 12 COMMON CARP K-40 3,018.2 +/- 361.0 22-MAY- 12 COMMON CARP MN-54 9.5 22-MAY- 12 COMMON CARP CO-58 12.0 22-MAY- 12 COMMON CARP FE-59 19.2 22-MAY- 12 COMMON CARP CO-60 7.1 22-MAY-12 COMMON CARP ZN-65 24.6 22-MAY-12 COMMON CARP 1-131 13.0 22-MAY-1 2 COMMON CARP CS-1 34 8.9 22-MAY-12 COMMON CARP CS-1 37 17.4 22-MAY-1 2 COMMON CARP H-3 8,370.0 +/- 240.0 22-MAY-1 2 FRESHWATER DRUM K-40 3,i68.0 +1- 384.9 22-MAY-1 2 FRESHWATER DRUM MN-54 9.7 22-MAY-1 2 FRESHWATER DRUM CO-58 9.8 22-MAY-1 2 FRESHWATER DRUM FE-59 21.8 22-MAY- 12 FRESHWATER DRUM CO-60 11.2 22-MAY- 12 FRESHWATER DRUM ZN-65 27.8 22-MAY- 12 FRESHWATER DRUM 1-131 19.9 22-MAY- 12 FRESHWATER DRUM CS-134 14.7 22-MAY- 12 FRESHWATER DRUM CS-137 9.0 22-MAY- 12 FRESHWATER DRUM H-3 8,i5i.0 +/- 239.0 22-MAY- 12 SMALLMOUTH BASS K-40 3,677.2 +/- 392.4 Duplicate 22-MAY- 12 SMALLMOUTH BASS K-40 3,528.9 +/- 372.8 22-MAY- 12 SMALLMOUTH BASS MN-54 13.5 Duplicate 22-MAY- 12 SMALLMOUTH BASS MN-54 10.9 22-MAY- 12 SMALLMOUTH BASS CO-58 7.7 Duplicate 22-MAY- 12 SMALLMOUTH BASS CO-58 13.5 22-MAY- 12 SMALLMOUTH BASS FE-59 30.3 Duplicate 22-MAY- 12 SMALLMOUTH BASS FE-59 21.8 22-MAY- 12 SMALLMOUTH BASS CO-60 12.3 Duplicate 22-MAY-12 SMALLMOUTH BASS CO-60 7.6 22-MAY-1 2 SMALLMOUTH BASS ZN-65 20.4 Duplicate 22-MAY-12 SMALLMOUTH BASS ZN-65 27.3 22-MAY-1 2 SMALLMOUTH BASS I-131 13.7 Duplicate 22-MAY-12 SMALLMOUTH BASS I-131 12.4 22-MAY-12 SMALLMOUTH BASS CS-1 34 13.6 Duplicate 22-MAY-1 2 SMALLMOUTH BASS CS-134 9.8 22-MAY-1 2 SMALLMOUTH BASS CS-137 13.0 Duplicate 22-MAY-1 2 SMALLMOUTH BASS CS-137 13.8 22-MAY-1 2 SMALLMOUTH BASS H-3 8,850.0 +/- 248.0 Duplicate 22-MAY-12 SMALLMOUTH BASS H-3 8,948.0 +/- 250.0 22-MAY-12 SMALLMOUTH BUFFALO K-40 2,990.3 +1- 407.2 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 57

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 22-MAY- 12 SMALLMOUTH BUFFALO MN-54 12.6 22-MAY- 12 SMALLMOUTH BUFFALO CO-58 16.7 22-MAY- 12 SMALLMOUTH BUFFALO FE-59 25.6 22-MAY- 12 SMALLMOUTH BUFFALO CO-60 13.6 22-MAY- 12 SMALLMOUTH BUFFALO ZN-65 31.4 22-MAY-1 2 SMALLMOUTH BUFFALO 1-131 23.3 22-MAY-12 SMALLMOUTH BUFFALO CS-134 17.0 22-MAY-1 2 SMALLMOUTH BUFFALO CS-137 16.8 22-MAY-1 2 SMALLMOUTH BUFFALO H-3 8,116.0 +/- 225.0 17-OCT-1 2 BLUE CATFISH K-40 3,162.7 +1- 317.8 17-OCT-1 2 BLUE CATFISH MN-54 12.4 17-OCT- 12 BLUE CATFISH CO-58 10.8 17-OCT-12 BLUE CATFISH FE-59 29.4 17-OCT-12 BLUE CATFISH CO-60 7.7 17-OCT-12 BLUE CATFISH ZN-65 30.3 17-OCT-12 BLUE CATFISH 1-131 54.3 17-OCT-12 BLUE CATFISH CS-134 7.8 17-OCT-12 BLUE CATFISH CS-137 13.3 17-OCT-12 BLUE CATFISH H-3 7,269.0 +/- 235.0 17-OCT-12 COMMON CARP K-40 3,104.0 +1- 338.9 17-OCT-12 COMMON CARP MN-54 8.6 17-OCT-12 COMMON CARP CO-58 9.0 17-OCT-12 COMMON CARP FE-59 25.8 17-OCT-12 COMMON CARP CO-60 13.7 17-OCT-12 COMMON CARP ZN-65 14.4 17-OCT-12 COMMON CARP 1-131 46.3 17-OCT-12 COMMON CARP CS-1 34 4.3 17-OCT-12 COMMON CARP CS-137 7.2 17-OCT-12 COMMON CARP H-3 7,670.0 +1- 235.0 17-OCT-12 WALLEYE K-40 3,547.3 +1- 317.9 17-OCT-12 WALLEYE MN-54 12.6 17-OCT-1 2 WALLEYE CO-58 11.6 17-OCT-1 2 WALLEYE FE-59 37.8 17-OCT-1 2 WALLEYE CO-60 11.1 17-OCT-1 2 WALLEYE ZN-65 13.6 17-OCT-12 WALLEYE 1-131 42.3 17-OCT-1 2 WALLEYE CS-134 11.0 17-OCT-1 2 WALLEYE CS-137 14.1 17-OCT- 12 WALLEYE H-3 6,808.0 +1- 226.0 17-OCT-12 WHITE BASS K-40 2,837.2 +1- 309.1 17-OCT- 12 WHITE BASS MN-54 11.6 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 58

Exposure Pathway - Ingestion Fish Location CCL Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 17-OCT-12 WHITE BASS CO-58 7.8 17-OCT-12 WHITE BASS FE-59 26.5 17-OCT-12 WHITE BASS CO-60 11.4 17-OCT-12 WHITE BASS ZN-65 24.4 17-OCT-12 WHITE BASS 1-131 66.5 17-OCT-1 2 WHITE BASS CS-134 10.8 17-OCT-1 2 WHITE BASS CS-137 13.5 17-OCT-1 2 WHITE BASS H-3 7,122.0 +/- 231.0 17-OCT-1 2 WHITE CRAPPIE K-40 2,981.2 +/- 311.1 17-OCT-1 2 WHITE CRAPPIE MN-54 13.0 17-OCT-1 2 WHITE CRAPPIE CO-58 11.6 17-OCT-1 2 WHITE CRAPPIE FE-59 16.9 17-OCT-1 2 WHITE CRAPPIE CO-60 5.3 17-OCT-1 2 WHITE CRAPPIE ZN-65 26.0 17-OCT-12 WHITE CRAPPIE 1-131 51.7 17-OCT- 12 WHITE CRAPPIE CS-1 34 11.0 17-OCT-12 WHITE CRAPPIE CS-137 13.7 17-OCT-12 WHITE CRAPPIE H-3 7,099.0 +/- 232.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 59

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 22-MAY-12 CHANNEL CATFISH K-40 3,497.2 +/- 360.0 22-MAY-1 2 CHANNEL CATFISH MN-54 14.1 22-MAY-1 2 CHANNEL CATFISH CO-58 12.9 22-MAY- 12 CHANNEL CATFISH FE-59 21.0 22-MAY- 12 CHANNEL CATFISH CO-60 9.6 22-MAY- 12 CHANNEL CATFISH ZN-65 16.3 22-MAY- 12 CHANNEL CATFISH 1-131 17.0 22-MAY- 12 CHANNEL CATFISH CS-134 9.5 22-MAY-12 CHANNEL CATFISH CS-1 37 10.7 22-MAY-1 2 CHANNEL CATFISH H-3 114.0 22-MAY-1 2 COMMON CARP K-40 3,289.8 +/- 391.4 22-MAY-1 2 COMMON CARP MN-54 13.4 22-MAY- 12 COMMON CARP CO-58 11.3 22-MAY-1 2 COMMON CARP FE-59 12.4 22-MAY- 12 COMMON CARP CO-60 8.9 22-MAY- 12 COMMON CARP ZN-65 32.8 22-MAY- 12 COMMON CARP 1-131 24.0 22-MAY-1 2 COMMON CARP CS-1 34 12.2 22-MAY-12 COMMON CARP CS-1 37 8.2 22-MAY-1 2 COMMON CARP H-3 118.0 22-MAY-1 2 FRESHWATER DRUM K-40 3,247.8 +/- 348.8 22-MAY-1 2 FRESHWATER DRUM MN-54 12.7 22-MAY-1 2 FRESHWATER DRUM CO-58 8.6 22-MAY- 12 FRESHWATER DRUM FE-59 21.7 22-MAY- 12 FRESHWATER DRUM CO-60 12.2 22-MAY- 12 FRESHWATER DRUM ZN-65 34.0 22-MAY- 12 FRESHWATER DRUM 1-131 13.6 22-MAY- 12 FRESHWATER DRUM CS-134 8.8 22-MAY- 12 FRESHWATER DRUM CS-137 15.6 22-MAY-12 FRESHWATER DRUM H-3 117.0 22-MAY- 12 SMALLMOUTH BUFFALO K-40 3,135.4 +/- 361.7 22-MAY-1 2 SMALLMOUTH BUFFALO MN-54 11.4 22-MAY-1 2 SMALLMOUTH BUFFALO CO-58 7.5 22-MAY-1 2 SMALLMOUTH BUFFALO FE-59 20.3 22-MAY-1 2 SMALLMOUTH BUFFALO CO-60 11.1 22-MAY- 12 SMALLMOUTH BUFFALO ZN-65 10.3 22-MAY- 12 SMALLMOUTH BUFFALO 1-131 15.1 22-MAY- 12 SMALLMOUTH BUFFALO CS-134 10.9 22-MAY-12 SMALLMOUTH BUFFALO CS-137 14.0 22-MAY- 12 SMALLMOUTH BUFFALO H-3 114.0 14-NOV-12 BIGMOUTH BUFFALO K-40 2,968.7 +/- 345.8 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 60

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 14-NOV-12 BIGMOUTH BUFFALO MN-54 11.0 14-NOV-12 BIGMOUTH BUFFALO CO-58 9.7 14-NOV-12 BIGMOUTH BUFFALO FE-59 21.7 14-NOV-12 BIGMOUTH BUFFALO CO-60 10.7 14-NOV- 12 BIGMOUTH BUFFALO ZN-65 13.5 14-NOV-12 BIGMOUTH BUFFALO 1-131 46.3 14-NOV-12 BIGMOUTH BUFFALO CS-1 34 9.8 14-NOV-12 BIGMOUTH BUFFALO CS-137 12.2 14-NOV-12 BIGMOUTH BUFFALO H-3 110.0 14-NOV-12 COMMON CARP K-40 2,944.1 +/- 362.3 14-NOV-12 COMMON CARP MN-54 10.5 14-NOV-12 COMMON CARP CO-58 15.0 14-NOV-12 COMMON CARP FE-59 17.4 14-NOV-12 COMMON CARP CO-60 15.5 14-NOV- 12 COMMON CARP ZN-65 9.2 14-NOV- 12 COMMON CARP 1-131 33.8 14-NOV-12 COMMON CARP CS-1 34 10.8 14-NOV-12 COMMON CARP CS-1 37 11.2 14-NOV-12 COMMON CARP H-3 119.0 14-NOV-12 SMALLMOUTH BUFFALO K-40 3,129.2 +/- 383.6 14-NOV-12 SMALLMOUTH BUFFALO MN-54 9.4 14-NOV-12 SMALLMOUTH BUFFALO CO-58 9.3 14-NOV-12 SMALLMOUTH BUFFALO FE-59 27.0 14-NOV-12 SMALLMOUTH BUFFALO CO-60 8.9 14-NOV-12 SMALLMOUTH BUFFALO ZN-65 25.0 14-NOV-12 SMALLMOUTH BUFFALO 1-131 35.4 14-NOV-12 SMALLMOUTH BUFFALO CS-134 9.0 14-NOV- 12 SMALLMOUTH BUFFALO CS-137 12.9 14-NOV- 12 SMALLMOUTH BUFFALO H-3 120.0 14-NOV- 12 WHITE CRAPPIE K-40 3,173.6 +/- 355.7 Duplicate 14-NOV-12 WHITE CRAPPIE K-40 3,111.5 +/- 376.8 14-NOV-12 WHITE CRAPPIE MN-54 11.9 Duplicate 14-NOV-12 WHITE CRAPPIE MN-54 16.5 14-NOV-12 WHITE CRAPPIE CO-58 12.5 Duplicate 14-NOV-12 WHITE CRAPPIE CO-58 9.2 14-NOV-12 WHITE CRAPPIE FE-59 31.0 Duplicate 14-NOV-12 WHITE CRAPPIE FE-59 29.7 14-NOV-12 WHITE CRAPPIE CO-60 10.7 Duplicate 14-NOV-12 WHITE CRAPPIE CO-60 6.5 14-NOV-12 WHITE CRAPPIE ZN-65 23.6 Duplicate 14-NOV-12 WHITE CRAPPIE ZN-65 19.2 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 61

Exposure Pathway - Ingestion Fish Location JRR Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 14-NOV-12 WHITE CRAPPIE 1-131 < 29.1 Duplicate 14-NOV-12 WHITE CRAPPIE 1-131 < 34.5 14-NOV- 12 WHITE CRAPPIE CS-134 < 11.0 Duplicate 14-NOV-12 WHITE CRAPPIE CS-134 < 12.7 14-NOV-12 WHITE CRAPPIE CS-137 < 11.2 Duplicate 14-NOV-12 WHITE CRAPPIE CS-1 37 < 14.2 14-NOV-12 WHITE CRAPPIE H-3 < 118.0 Duplicate 14-NOV-12 WHITE CRAPPIE H-3 < 118.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 62

Exposure Pathway - Ingestion Food/Garden Location B-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 26-MAR-1 2 HORSERADISH LEAVES BE-7 < 139.5 26-MAR-1 2 HORSERADISH LEAVES K-40 4,920.5 +/- 405.5 26-MAR-1 2 HORSERADISH LEAVES MN-54 < 9.8 26-MAR- 12 HORSERADISH LEAVES CO-58 < 8.0 26-MAR- 12 HORSERADISH LEAVES FE-59 < 30.1 26-MAR- 12 HORSERADISH LEAVES CO-60 < 10.9 26-MAR- 12 HORSERADISH LEAVES ZN-65 < 25.9 26-MAR- 12 HORSERADISH LEAVES ZR-NB-95 < 7.1 26-MAR-1 2 HORSERADISH LEAVES 1-131 < 14.6 26-MAR-1 2 HORSERADISH LEAVES CS-1 34 < 8.4 26-MAR-1 2 HORSERADISH LEAVES CS-1 37 < 13.1 16-APR- 12 HORSERADISH LEAVES BE-7 352.2 +/I- 193.4 16-APR-12 HORSERADISH LEAVES K-40 7,798.0 +/i- 569.7 16-APR-12 HORSERADISH LEAVES MN-54 < 13.2 16-APR-12 HORSERADISH LEAVES CO-58 < 12.3 16-APR-12 HORSERADISH LEAVES FE-59 < 38.9 16-APR-12 HORSERADISH LEAVES CO-60 < 21.3 16-APR-12 HORSERADISH LEAVES ZN-65 < 40.3 16-APR- 12 HORSERADISH LEAVES ZR-NB-95 < 14.2 16-APR-1 2 HORSERADISH LEAVES 1-131 < 31.1 16-APR- 12 HORSERADISH LEAVES CS-134 < 18.1 16-APR- 12 HORSERADISH LEAVES CS-1 37 < 20.9 30-JUL-12 HORSERADISH LEAVES BE-7 563.8 +/I- 210.7 30-JUL-12 HORSERADISH LEAVES K-40 9,300.1 +/I- 657.9 30-JUL-12 HORSERADISH LEAVES MN-54

• 17.1 30-JUL-12 HORSERADISH LEAVES CO-58

• 21.7 30-JUL-12 HORSERADISH LEAVES FE-59

• 30.2 30-JUL-12 HORSERADISH LEAVES CO-60

• 12.5 30-JUL-12 HORSERADISH LEAVES ZN-65

• 43.0 30-JUL-12 HORSERADISH LEAVES ZR-NB-95

• 23.0 30-JUL-12 HORSERADISH LEAVES 1-131

• 24.2 30-JUL-12 HORSERADISH LEAVES CS-134

• 11.6 30-JUL-12 HORSERADISH LEAVES CS-1 37

• 19.1 27-AUG-12 HORSERADISH LEAVES BE-7 774.8 +-/- 180.6 27-AUG-12 HORSERADISH LEAVES K-40 6,914.2 +/I- 519.4 27-AUG-12 HORSERADISH LEAVES MN-54 < 15.6 27-AUG-12 HORSERADISH LEAVES CO-58 < 21.2 27-AUG-12 HORSERADISH LEAVES FE-59 < 33.6 27-AUG-1 2 HORSERADISH LEAVES CO-60 < 12.6 27-AUG-1 2 HORSERADISH LEAVES ZN-65 < 32.4 27-AUG-1 2 HORSERADISH LEAVES ZR-NB-95 < 19.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 63

Exposure Pathway - Ingestion Food/Garden Location B-I Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 27-AUG-12 HORSERADISH LEAVES 1-131 32.1 27-AUG-12 HORSERADISH LEAVES CS-134 14.0 27-AUG-1 2 HORSERADISH LEAVES CS-137 15.9 24-SEP-1 2 HORSERADISH LEAVES BE-7 501.7 +1- 133.2 24-SEP-1 2 HORSERADISH LEAVES K-40 5,347.8 +1- 405.8 24-SEP-12 HORSERADISH LEAVES MN-54 13.2 24-SEP-12 HORSERADISH LEAVES CO-58 9.4 24-SEP-12 HORSERADISH LEAVES FE-59 24.1 24-SEP-12 HORSERADISH LEAVES CO-60 7.8 24-SEP-12 HORSERADISH LEAVES ZN-65 22.1 24-SEP-12 HORSERADISH LEAVES ZR-NB-95 11.2 24-SEP-12 HORSERADISH LEAVES 1-131 30.6 24-SEP-12 HORSERADISH LEAVES CS-134 9.8 24-SEP-1 2 HORSERADISH LEAVES CS-137 12.3 15-OCT- 12 HORSERADISH LEAVES BE-7 598.2 +1- 186.6 15-OCT-1 2 HORSERADISH LEAVES K-40 5,610.8 +1- 478.3 15-OCT-12 HORSERADISH LEAVES MN-54 16.0 15-OCT-12 HORSERADISH LEAVES CO-58 14.6 15-OCT-12 HORSERADISH LEAVES FE-59 23.5 15-OCT-12 HORSERADISH LEAVES CO-60 15.1 15-OCT-12 HORSERADISH LEAVES ZN-65 31.9 15-OCT-1 2 HORSERADISH LEAVES ZR-NB-95 19.0 15-OCT- 12 HORSERADISH LEAVES 1-131 30.7 15-OCT- 12 HORSERADISH LEAVES CS-134 13.6 15-OCT-1 2 HORSERADISH LEAVES CS-1 37 11.6 12-NOV-12 HORSERADISH LEAVES BE-7 695.7 +1- 160.5 12-NOV-12 HORSERADISH LEAVES K-40 6,076.0 +1- 421.4 12-NOV- 12 HORSERADISH LEAVES MN-54 14.8 12-NOV- 12 HORSERADISH LEAVES CO-58 7.8 12-NOV- 12 HORSERADISH LEAVES FE-59 29.2 12-NOV- 12 HORSERADISH LEAVES CO-60 10.5 12-NOV-12 HORSERADISH LEAVES ZN-65 21.2 12-NOV-12 HORSERADISH LEAVES ZR-NB-95 13.6 12-NOV- 12 HORSERADISH LEAVES 1-131 20.5 12-NOV- 12 HORSERADISH LEAVES CS-134 12.4 12-NOV-12 HORSERADISH LEAVES CS-137 9.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 64

Exposure Pathway - Ingestion FoodlGarden Location D-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 26-MAR-12 RHUBARB BE-7 262.1 +/- 133.3 26-MAR-1 2 RHUBARB K-40 3,033.2 +/- 374.3 26-MAR-1 2 RHUBARB MN-54 15.0 26-MAR- 12 RHUBARB CO-58 15.8 26-MAR- 12 RHUBARB FE-59 23.3 26-MAR- 12 RHUBARB CO-60 11.6 26-MAR- 12 RHUBARB ZN-65 39.6 26-MAR- 12 RHUBARB ZR-NB-95 17.4 26-MAR- 12 RHUBARB 1-131 24.7 26-MAR-1 2 RHUBARB CS-1 34 14.9 26-MAR-1 2 RHUBARB CS-137 10.7 16-APR- 12 HORSERADISH LEAVES BE-7 347.8+- 163.5 16-APR-12 HORSERADISH LEAVES K-40 5,707.9+1 417.7 16-APR-1 2 HORSERADISH LEAVES MN-54 6.8 16-APR-12 HORSERADISH LEAVES CO-58 9.5 16-APR-12 HORSERADISH LEAVES FE-59 29.3 16-APR-12 HORSERADISH LEAVES CO-60 11.3 16-APR-12 HORSERADISH LEAVES ZN-65 23.8 16-APR- 12 HORSERADISH LEAVES ZR-NB-95 15.9 16-APR-12 HORSERADISH LEAVES 1-131 22.6 16-APR- 12 HORSERADISH LEAVES CS-134 12.7 16-APR-12 HORSERADISH LEAVES CS-137 13.0 29-MAY- 12 HORSERADISH LEAVES BE-7 508.0+- 152.2 29-MAY- 12 HORSERADISH LEAVES K-40 5,891 .9+- 442.1 29-MAY-12 HORSERADISH LEAVES MN-54 14.0 29-MAY-12 HORSERADISH LEAVES CO-58 14.0 29-MAY-1 2 HORSERADISH LEAVES FE-59 19.8 29-MAY-1 2 HORSERADISH LEAVES CO-60 13.0 29-MAY-1 2 HORSERADISH LEAVES ZN-65 42.4 29-MAY- 12 HORSERADISH LEAVES ZR-NB-95 19.8 29-MAY-12 HORSERADISH LEAVES 1-131 28.9 29-MAY- 12 HORSERADISH LEAVES CS-1 34 14.3 29-MAY- 12 HORSERADISH LEAVES CS-137 14.9 25-JUN-12 HORSERADISH LEAVES BE-7 580.9+- 241.9 25-JUN-12 HORSERADISH LEAVES K-40 5,110.9+1 51.0 25-JUN-12 HORSERADISH LEAVES MN-54 9.7 25-JUN-12 HORSERADISH LEAVES CO-58 19.5 25-JUN-12 HORSERADISH LEAVES FE-59 41.7 25-JUN-12 HORSERADISH LEAVES CO-60 15.5 25-JUN-12 HORSERADISH LEAVES ZN-65 36.1 25-JUN-12 HORSERADISH LEAVES ZR-NB-95 14.3 2012 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) 25-JUN-12 HORSERADISH LEAVES 1-131 36.1 25-JUN-12 HORSERADISH LEAVES CS-134 15.6 25-JUN-12 HORSERADISH LEAVES CS-1 37 18.9 30-JUL-12 RHUBARB BE-7 680.9 +1- 217.5 30-JUL-12 RHUBARB K-40 4,342.7 +1- 493.8 30-JUL-12 RHUBARB MN-54 12.9 30-JUL-12 RHUBARB CO-58 12.0 30-JUL-12 RHUBARB FE-59 28.2 30-JUL-12 RHUBARB CO-60 14.9 30-JUL-12 RHUBARB ZN-65 29.2 30-JUL-12 RHUBARB ZR-NB-95 21.7 30-JUL-12 RHUBARB 1-131 37.2 30-JUL-12 RHUBARB CS-1 34 17.1 30-JUL-12 RHUBARB CS-1 37 18.6 27-AUG-12 HORSERADISH LEAVES BE-7 763.6+/ 160.2 27-AUG-1 2 HORSERADISH LEAVES K-40 5,605.9 +/- 431.6 27-AUG-1 2 HORSERADISH LEAVES MN-54 14.0 27-AUG-12 HORSERADISH LEAVES CO-58 12.5 27-AUG-12 HORSERADISH LEAVES FE-59 18.0 27-AUG-12 HORSERADISH LEAVES CO-60 11.9 27-AUG-12 HORSERADISH LEAVES ZN-65 18.9 27-AUG-12 HORSERADISH LEAVES ZR-NB-95 12.3 27-AUG-12 HORSERADISH LEAVES 1-131 18.4 27-AUG-12 HORSERADISH LEAVES CS-1 34 13.9 27-AUG-12 HORSERADISH LEAVES CS-1 37 10.8 24-SEP-12 KALE BE-7 112.3 24-SEP-12 KALE K-40 5,632.8+- 404.7 24-SEP-12 KALE MN-54 10.6 24-SEP-12 KALE CO-58 7.6 24-SEP-12 KALE FE-59 25.9 24-SEP-12 KALE CO-60 6.5 24-SEP-12 KALE ZN-65 13.0 24-SEP-12 KALE ZR-NB-95 14.0 24-SEP-12 KALE 1-131 27.7 24-SEP-12 KALE CS-134 12.9 24-SEP-12 KALE CS-137 13.2 15-OCT-12 KALE BE-7 161.2 15-OCT-12 KALE K-40 5,292.7+- 421.4 15-OCT-12 KALE MN-54 16.7 15-OCT-1 2 KALE CO-58 11.3 15-OCT-1 2 KALE FE-59 21.5 2012 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) 15-OCT-1 2 KALE CO-60 16.8 15-OCT-1 2 KALE ZN-65 21.2 15-OCT-1 2 KALE ZR-NB-95 12.4 15-OCT-1 2 KALE 1-131 34.1 15-OCT-1 2 KALE CS-1 34 13.6 15-OCT-12 KALE CS-1 37 16.7 12-NOV-12 KALE BE-7 144.2 12-NOV- 12 KALE K-40 4,290.3+- 381.8 12-NOV-12 KALE MN-54 9.8 12-NOV-12 KALE CO-58 8.8 12-NOV-12 KALE FE-59 22.1 12-NOV-12 KALE CO-60 7.9 12-NOV-12 KALE ZN-65 28.0 12-NOV- 12 KALE ZR-NB-95 10.3 12-NOV- 12 KALE 1-131 17.4 12-NOV-12 KALE CS-134 9.1 12-NOV- 12 KALE CS-137 14.3 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 67

Exposure Pathway - Ingestion Food/Garden Location H-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCilKg Wet) 27-AUG-12 HORSERADISH LEAVES BE-7 500.3 +1- 150.8 27-AUG-12 HORSERADISH LEAVES K-40 5,820.5 +1- 478.8 27-AUG-1 2 HORSERADISH LEAVES MN-54 8.6 27-AUG-12 HORSERADISH LEAVES CO-58 10.0 27-AUG-12 HORSERADISH LEAVES FE-59 33.3 27-AUG-1 2 HORSERADISH LEAVES CO-60 6.9 27-AUG-1 2 HORSERADISH LEAVES ZN-65 30.3 27-AUG-1 2 HORSERADISH LEAVES ZR-NB-95 15.6 27-AUG-1 2 HORSERADISH LEAVES 1-131 26.7 27-AUG-1 2 HORSERADISH LEAVES CS-134 10.0 27-AUG-1 2 HORSERADISH LEAVES CS-137 13.8 24-SEP-12 HORSERADISH LEAVES BE-7 526.7 +1- 155.6 Duplicate 24-SEP-1 2 HORSERADISH LEAVES BE-7 504.2 +1- 155.0 24-SEP-12 HORSERADISH LEAVES K-40 6,913.7 +1- 431.2 Duplicate 24-SEP-1 2 HORSERADISH LEAVES K-40 6,823.9 +1- 485.2 24-SEP-1 2 HORSERADISH LEAVES MN-54 11.6 Duplicate 24-SEP-12 HORSERADISH LEAVES MN-54 12.9 24-SEP-12 HORSERADISH LEAVES CO-58 14.3 Duplicate 24-SEP-12 HORSERADISH LEAVES CO-58 6.9 24-SEP-12 HORSERADISH LEAVES FE-59 21.8 Duplicate 24-SEP-12 HORSERADISH LEAVES FE-59 21.8 24-SEP-12 HORSERADISH LEAVES CO-60 8.3 Duplicate 24-SEP-12 HORSERADISH LEAVES CO-60 7.5 24-SEP-12 HORSERADISH LEAVES ZN-65 31.0 Duplicate 24-SEP-12 HORSERADISH LEAVES ZN-65 18.2 24-SEP-12 HORSERADISH LEAVES ZR-NB-95 12.4 Duplicate 24-SEP-12 HORSERADISH LEAVES ZR-NB-95 10.2 24-SEP-12 HORSERADISH LEAVES 1-131 26.4 Duplicate 24-SEP-12 HORSERADISH LEAVES 1-131 19.1 24-SEP-12 HORSERADISH LEAVES CS-134 8.8 Duplicate 24-SEP-12 HORSERADISH LEAVES CS-134 7.1 24-SEP-12 HORSERADISH LEAVES CS-137 11.6 Duplicate 24-SEP-12 HORSERADISH LEAVES CS-137 7.3 15-OCT-12 HORSERADISH LEAVES BE-7 535.8 +1- 197.4 15-OCT-12 HORSERADISH LEAVES K-40 5,549.0 +1- 436.8 15-OCT- 12 HORSERADISH LEAVES MN-54 12.0 15-OCT-12 HORSERADISH LEAVES CO-58 14.2 15-OCT- 12 HORSERADISH LEAVES FE-59 25.8 15-OCT-12 HORSERADISH LEAVES CO-60 10.4 15-OCT-1 2 HORSERADISH LEAVES ZN-65 18.6 15-OCT- 12 HORSERADISH LEAVES ZR-NB-95 13.9 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 68

Exposure Pathway - Ingestion Food/Garden Location H-2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 15-OCT-12 HORSERADISH LEAVES 1-131

• 32.9 15-OCT-12 HORSERADISH LEAVES CS-1 34

• 16.1 15-OCT-12 HORSERADISH LEAVES CS-1 37 < 12.8 12-NOV-12 HORSERADISH LEAVES BE-7 921.5 +/- 183.0 12-NOV- 12 HORSERADISH LEAVES K-40 5,862.3 +/- 439.0 12-NOV-12 HORSERADISH LEAVES MN-54

• 11.6 12-NOV- 12 HORSERADISH LEAVES CO-58

• 10.8 12-NOV- 12 HORSERADISH LEAVES FE-59

• 26.3 12-NOV- 12 HORSERADISH LEAVES CO-60

• 13.6 12-NOV-12 HORSERADISH LEAVES ZN-65

• 31.3 12-NOV-12 HORSERADISH LEAVES ZR-NB-95

• 14.2 12-NOV-12 HORSERADISH LEAVES 1-131

• 35.9 12-NOV-12 HORSERADISH LEAVES CS-134

• 13.1 12-NOV-12 HORSERADISH LEAVES CS-137

• 10.7 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 69

Exposure Pathway - Ingestion FoodlGarden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 16-APR- 12 HORSERADISH LEAVES BE-7 < 265.5 Duplicate 16-APR-12 HORSERADISH LEAVES BE-7 270.2 +/- 139.0 16-APR-12 HORSERADISH LEAVES K-40 3,418.6 +/- 466.3 Duplicate 16-APR-12 HORSERADISH LEAVES K-40 4,372.1 +/- 449.0 16-APR- 12 HORSERADISH LEAVES MN-54 < 15.4 Duplicate 16-APR- 12 HORSERADISH LEAVES MN-54 < 13.1 16-APR- 12 HORSERADISH LEAVES CO-58 < 16.0 Duplicate 16-APR-12 HORSERADISH LEAVES CO-58 < 7.9 16-APR- 12 HORSERADISH LEAVES FE-59 < 32.3 Duplicate 16-APR-12 HORSERADISH LEAVES FE-59 < 26.8 16-APR-12 HORSERADISH LEAVES CO-60 < 15.8 Duplicate 16-APR-12 HORSERADISH LEAVES CO-60 < 17.8 16-APR-12 HORSERADISH LEAVES ZN-65 < 26.2 Duplicate 16-APR-12 HORSERADISH LEAVES ZN-65 < 34.9 16-APR- 12 HORSERADISH LEAVES ZR-NB-95 < 11.5 Duplicate 16-APR- 12 HORSERADISH LEAVES ZR-NB-95 < 18.0 16-APR-12 HORSERADISH LEAVES 1-131 < 40.2 Duplicate 16-APR-12 HORSERADISH LEAVES 1-131 < 21.8 16-APR-12 HORSERADISH LEAVES CS-134 < 16.9 Duplicate 16-APR-12 HORSERADISH LEAVES CS-134 < 14.4 16-APR-12 HORSERADISH LEAVES CS-137 < 21.2 Duplicate 16-APR-12 HORSERADISH LEAVES CS-137 < 18.2 29-MAY-1 2 HORSERADISH LEAVES BE-7 490.2 +/- 165.4 29-MAY-1 2 HORSERADISH LEAVES K-40 3,868.2 +/- 452.7 29-MAY-1 2 HORSERADISH LEAVES MN-54 < 16.7 29-MAY-1 2 HORSERADISH LEAVES CO-58 < 20.7 29-MAY- 12 HORSERADISH LEAVES FE-59 < 26.8 29-MAY- 12 HORSERADISH LEAVES CO-60 < 17.0 29-MAY- 12 HORSERADISH LEAVES ZN-65 < 36.0 29-MAY- 12 HORSERADISH LEAVES ZR-NB-95 < 12.4 29-MAY- 12 HORSERADISH LEAVES 1-131 < 25.4 29-MAY- 12 HORSERADISH LEAVES CS-134 < 13.8 29-MAY- 12 HORSERADISH LEAVES CS-137 < 13.9 25-JUN-12 HORSERADISH LEAVES BE-7 808.3 +/- 192.4 25-JUN-12 HORSERADISH LEAVES K-40 6,238.8 +/- 504.7 25-JUN-12 HORSERADISH LEAVES MN-54 < 10.9 25-JUN-12 HORSERADISH LEAVES CO-58 < 15.2 25-JUN-12 HORSERADISH LEAVES FE-59 < 20.0 25-JUN-12 HORSERADISH LEAVES CO-60 < 14.2 25-JUN-12 HORSERADISH LEAVES ZN-65 < 37.9 25-JUN-12 HORSERADISH LEAVES ZR-NB-95 < 21.1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 70

Exposure Pathway - Ingestion Food/Garden Location N-1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 25-JUN-12 HORSERADISH LEAVES 1-131 38.2 25-JUN-12 HORSERADISH LEAVES CS-134 14.2 25-JUN-12 HORSERADISH LEAVES CS-137 14.1 30-JUL-12 CANTALOUPE LEAVES BE-7 1,251.5 +1- 269.3 30-JUL-12 CANTALOUPE LEAVES K-40 5,859.8 +1- 616.2 30-JUL-12 CANTALOUPE LEAVES MN-54 15.4 30-JUL-12 CANTALOUPE LEAVES CO-58 15.6 30-JUL-12 CANTALOUPE LEAVES FE-59 40.2 30-JUL-12 CANTALOUPE LEAVES CO-60 19.3 30-JUL-12 CANTALOUPE LEAVES ZN-65 21.2 30-JUL-12 CANTALOUPE LEAVES ZR-NB-95 19.4 30-JUL-12 CANTALOUPE LEAVES 1-131 40.2 30-JUL-12 CANTALOUPE LEAVES CS-134 17.5 30-JUL-12 CANTALOUPE LEAVES CS-137 18.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 71

Exposure Pathway - Ingestion Food/Garden Location Q-6 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 29-MAY-12 CORN LEAVES BE-7 914.2 +/I- 183.2 29-MAY-1 2 CORN LEAVES K-40 6,538.0 +/I- 507.5 29-MAY-1 2 CORN LEAVES MN-54

• 18.7 29-MAY-1 2 CORN LEAVES CO-58

• 16.3 29-MAY- 12 CORN LEAVES FE-59

• 33.6 29-MAY- 12 CORN LEAVES CO-60

• 12.2 29-MAY- 12 CORN LEAVES ZN-65

• 24.2 29-MAY- 12 CORN LEAVES ZR-NB-95

• 16.1 29-MAY-12 CORN LEAVES 1-131

• 30.3 29-MAY- 12 CORN LEAVES CS-1 34

• 15.9 29-MAY- 12 CORN LEAVES CS-137

• 18.6 25-JUN-12 CORN LEAVES BE-7 3,347.8 +/I- 223.6 25-JUN-12 CORN LEAVES K-40 6,701.3 +/I- 443.8 25-JUN-12 CORN LEAVES MN-54 < 15.4 25-JUN-12 CORN LEAVES CO-58 < 10.4 25-JUN-12 CORN LEAVES FE-59 < 18.3 25-JUN-12 CORN LEAVES CO-60 < 11.3 25-JUN-12 CORN LEAVES ZN-65 < 30.5 25-JUN-12 CORN LEAVES ZR-NB-95 < 12.1 25-JUN-12 CORN LEAVES 1-131 < 23.8 25-JUN-12 CORN LEAVES CS-1 34 < 13.2 25-JUN-12 CORN LEAVES CS-1 37 < 15.1 30-JUL-12 CORN LEAVES BE-7 2,163.1 +/I- 352.9 30-JUL-12 CORN LEAVES K-40 6,996.9 +/i- 734.2 30-JUL-12 CORN LEAVES MN-54 < 26.9 30-JUL-12 CORN LEAVES CO-58 < 18.3 30-JUL-12 CORN LEAVES FE-59 < 47.6 30-JUL-12 CORN LEAVES CO-60 < 13.0 30-JUL-12 CORN LEAVES ZN-65 < 42.7 30-JUL-12 CORN LEAVES ZR-NB-95 < 24.8 30-JUL-12 CORN LEAVES 1-131 < 49.7 30-JUL-12 CORN LEAVES CS-134

• 27.8 30-JUL-12 CORN LEAVES CS-137

• 32.1 24-SEP-12 CABBAGE BE-7 212.4 +/I- 81.5 24-SEP-12 CABBAGE K-40 5,149.1 +/I- 319.8 24-SEP-12 CABBAGE MN-54 < 8.1 24-SEP-12 CABBAGE CO-58 < 10.4 24-SEP-12 CABBAGE FE-59 < 26.2 24-SEP-12 CABBAGE CO-60 < 9.8 24-SEP-12 CABBAGE ZN-65 < 20.2 24-SEP-12 CABBAGE ZR-NB-95 < 11.2 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 72

Exposure Pathway - Ingestion Food/Garden Location Q-6 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 24-SEP-12 CABBAGE 1-131

• 20.0 24-SEP-12 CABBAGE CS-1 34

• 10.1 24-SEP-12 CABBAGE CS-137 < 8.0 15-OCT-1 2 CABBAGE BE-7 717.0 +/- 181.1 15-OCT-12 CABBAGE K-40 4,058.9 +/- 358.8 15-OCT-12 CABBAGE MN-54

• 12.1 15-OCT-12 CABBAGE CO-58

• 14.4 15-OCT-1 2 CABBAGE FE-59

• 24.5 15-OCT-1 2 CABBAGE CO-60

• 12.5 15-OCT-1 2 CABBAGE ZN-65

• 21.3 15-OCT-12 CABBAGE ZR-NB-95

• 14.6 15-OCT-12 CABBAGE 1-131

• 26.8 15-OCT-12 CABBAGE CS-1 34

• 11.0 15-OCT-12 CABBAGE CS-1 37

• 10.0 12-NOV-12 CABBAGE BE-7 286.1 +1- 134.4 12-NOV-12 CABBAGE K-40 4,833.5 +/- 460.6 12-NOV-12 CABBAGE MN-54 < 8.5 12-NOV-12 CABBAGE CO-58 < 10.8 12-NOV-12 CABBAGE FE-59 < 27.1 12-NOV-1 2 CABBAGE CO-60 < 17.5 12-NOV-12 CABBAGE ZN-65 < 21.9 12-NOV-12 CABBAGE ZR-NB-95 < 11.1 12-NOV-12 CABBAGE 1-131

• 15.9 12-NOV-12 CABBAGE CS-134

• 11.8 12-NOV-12 CABBAGE CS-1 37

• 11.4 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 73

Exposure Pathway - Ingestion Feed and Forage Location NR-D1 Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 19-NOV- 12 IRRIGATED SOYBEANS BE-7 < 77. 9 19-NOV-12 IRRIGATED SOYBEANS K-40 14,309.0 +/- 346. 4 19-NOV-12 IRRIGATED SOYBEANS MN-54 < 9.2 19-NOV-12 IRRIGATED SOYBEANS CO-58 < 7.2 19-NOV- 12 IRRIGATED SOYBEANS FE-59 < 28.9 19-NOV-12 IRRIGATED SOYBEANS CO-60 < 11.9 19-NOV-12 IRRIGATED SOYBEANS ZN-65 < 22.0 19-NOV-12 IRRIGATED SOYBEANS ZR-NB-95 < 6.0 19-NOV-12 IRRIGATED SOYBEANS 1-131 < 22.8 19-NOV- 12 IRRIGATED SOYBEANS CS-134 < 7.0 19-NOV- 12 IRRIGATED SOYBEANS CS-137 < 8.6 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 74

Exposure Pathway - Ingestion Feed and Forage Location NR-D2 Collection Sample Nuclide Gamma Spectrum Duplicate Date Desctiption Concentration Analysis (pCi/Kg Wet) 29-AUG-12 IRRIGATED CORN BE-7 < 34.1 29-AUG-1 2 IRRIGATED CORN K-40 3,033.4 +/- 252.6 29-AUG-1 2 IRRIGATED CORN MN-54 < 5.9 29-AUG-12 IRRIGATED CORN CO-58 < 6.1 29-AUG-12 IRRIGATED CORN FE-59 < 6.9 29-AUG-12 IRRIGATED CORN CO-60 < 4.3 29-AUG-12 IRRIGATED CORN ZN-65 < 5.0 29-AUG-1 2 IRRIGATED CORN ZR-NB-95 < 3.5 29-AUG-12 IRRIGATED CORN 1-131 < 8.0 29-AUG-12 IRRIGATED CORN CS-1 34 < 8.1 29-AUG-12 IRRIGATED CORN CS-1 37 < 8.7 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 75

Exposure Pathway - Ingestion Feed and Forage Location NR-UI Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 15-AUG- 12 IRRIGATED CORN BE-7 < 80.8 15-AUG- 12 IRRIGATED CORN K-40 2,993.5 +/- 270.7 15-AUG-12 IRRIGATED CORN MN-54 < 4.9 15-AUG- 12 IRRIGATED CORN CO-58 < 5.2 15-AUG- 12 IRRIGATED CORN FE-59 < 7.7 15-AUG-12 IRRIGATED CORN CO-60 < 4.0 15-AUG-12 IRRIGATED CORN ZN-65 < 4.4 15-AUG-12 IRRIGATED CORN ZR-NB-95 < 4.6 15-AUG-12 IRRIGATED CORN 1-131 < 8.1 15-AUG-12 IRRIGATED CORN CS-1 34 < 7.0 15-AUG- 12 IRRIGATED CORN CS-1 37 < 6.9 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 76

Exposure Pathway - Aquatic Bottom Sediment Location DC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY- 12 K-40 10,035.0 +/- 1,063.0 02-MAY-12 MN-54 < 43.6 02-MAY-1 2 CO-58 < 43.1 02-MAY-1 2 FE-59 < 134.8 02-MAY- 12 CO-60 < 30.6 02-MAY- 12 ZN-65 < 96.0 02-MAY- 12 CS-1 34 < 43.7 02-MAY-1 2 CS-137 66.6 +/- 39.0 02-MAY-1 2 FE-55 < 15,738.0 29-NOV-12 K-40 i1,192.0 +/- 1,056.0 29-NOV-12 MN-54 < 46.7 29-NOV-12 CO-58 < 42.5 29-NOV-12 FE-59 < 26.6 29-NOV-12 CO-60 < 42.6 29-NOV-1 2 ZN-65 < 61.1 29-NOV-12 CS-1 34 < 38.6 29-NOV-12 CS-137 111.0 +/- 55.6 29-NOV-12 FE-55 < 14,788.6 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 77

Exposure Pathway - Aquatic Bottom Sediment Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 11-APR-12 K-40 11,179.0 +/- 566.5 11-APR-12 MN-54 < 18.5 11-APR-12 CO-58 < 18.6 11-APR-12 FE-59 < 31.3 11-APR-12 CO-60 < 12.6 11-APR-12 ZN-65 < 29.7 11-APR-12 CS-134 < 12.2 11-APR-12 CS-137 49.8 +/- 15.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 78

Exposure Pathway - Aquatic Bottom Sediment Location ESW 2012-3 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY-1 2 K-40 9,556.1 +/- 1,024.0 02-MAY-1 2 MN-54 < 29.3 02-MAY-12 CO-58 < 52.2 02-MAY- 12 FE-59 < 155.8 02-MAY- 12 CO-60 < 51.1 02-MAY- 12 ZN-65 < 113.0 02-MAY- 12 CS-1 34 < 31.7 02-MAY- 12 CS-1 37 < 54.7 02-MAY- 12 FE-55 < 16,760.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 79

Exposure Pathway - Aquatic Bottom Sediment Location ESW 2012-4 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCiIKg Dry) 08-NOV-12 K-40 7,881.1 +/- 600.4 08-NOV-12 MN-54 < 31.5 08-NOV-12 CO-58 < 40.5 08-NOV-12 FE-59 < 42.2 08-NOV-12 CO-60 < 20.7 08-NOV-12 ZN-65 < 53.1 08-NOV-12 CS-134 < 26.0 08-NOV-12 CS-137 49.1 +/- 28.7 08-NOV-12 FE-55 < 14,854.4 2012 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) 02-MAY-12 K-40 11,955.0 +/- 1,125.0 02-MAY- 12 MN-54 < 52.7 02-MAY- 12 CO-58 < 54.8 02-MAY- 12 FE-59 < 76.1 02-MAY- 12 CO-60 < 18.0 02-MAY- 12 ZN-65 < 79.8 02-MAY-1 2 CS-1 34 < 41.4 02-MAY- 12 CS-137 121.8 +/- 54.9 19-NOV- 12 K-40 9,398.0 +/- 590.9 19-NOV-12 MN-54 < 22.6 19-NOV-12 CO-58 < 21.7 19-NOV-12 FE-59 < 76.8 19-NOV-1 2 CO-60 < 10.8 19-NOV-12 ZN-65 < 47.9 19-NOV-12 CS-134 < 18.4 19-NOV-1 2 CS-137 45.4 +/- 23.9 2012 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) 05-SEP-12 K-40 7,502.3 +/- 470.1 05-SEP-12 MN-54 < 15.2 05-SEP-12 CO-58 < 14.8 05-SEP-12 FE-59 < 15.8 05-SEP-12 CO-60 < 14.5 05-SEP-1 2 ZN-65 < 36.0 05-SEP-12 CS-134 < 14.2 05-SEP-12 CS-137 26.4 +/- 15.3 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 82

Exposure Pathway - Aquatic Bottom Sediment Location SC Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 15-JUN-12 K-40 10,824.0 +/- 653.6 15-JUN-12 MN-54 < 33.7 15-JUN-12 CO-58 < 25.5 15-JUN-12 FE-59 < 47.2 15-JUN-12 CO-60 < 15.2 15-JUN-12 ZN-65 < 40.3 15-JUN-12 CS-134 < 15.7 15-JUN-12 CS-137 < 25.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 83

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-10 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY-1 2 K-40 10,751.0 +/- 1,126.0 02-MAY- 12 MN-54 < 50.1 02-MAY- 12 CO-58 < 49.9 02-MAY- 12 FE-59 < 82.2 02-MAY- 12 CO-60 < 10.9 02-MAY- 12 ZN-65 < 50.6 02-MAY- 12 CS-134 < 41.0 02-MAY- 12 CS-137 99.2 +/- 55.8 02-MAY-12 FE-55 < 17,144.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 84

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-11 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY-12 K-40 11,301.0 +/- 944.3 02-MAY- 12 MN-54 < 43.4 02-MAY- 12 CO-58 < 54.1 02-MAY- 12 FE-59 < 144.5 02-MAY-12 CO-60 < 19.1 02-MAY-12 ZN-65 < 81.4 02-MAY-12 CS-134 < 36.7 02-MAY-1 2 CS-137 < 47.7 02-MAY-1 2 FE-55 < 17,177.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 85

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-12 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY- 12 K-40 11,131.0 +/- 899.3 02-MAY- 12 MN-54 46.5 02-MAY- 12 CO-58 43.3 02-MAY- 12 FE-59 118.5 02-MAY-1 2 CO-60 27.6 02-MAY-1 2 ZN-65 87.8 02-MAY-1 2 CS-134 36.6 02-MAY- 12 CS-1 37 91.0 +/- 38.3 02-MAY- 12 FE-55 16,736.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 86

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-13 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 08-NOV-1 2 K-40 8,028.3 +/- 920.1 08-NOV-12 MN-54 < 53.6 08-NOV-12 CO-58 < 33.6 08-NOV-12 FE-59 < 129.0 08-NOV-12 CO-60 < 39.1 08-NOV-12 ZN-65 < 84.7 08-NOV-12 CS-134 < 34.0 08-NOV-1 2 CS-1 37 < 44.4 08-NOV-12 FE-55 < 14,708.8 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 87

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-14 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCilKg Dry) 08-NOV-1 2 K-40 9,542.0 +/- 926.4 08-NOV-12 MN-54 46.1 08-NOV-12 CO-58 35.6 08-NOV-12 FE-59 71.6 08-NOV-12 CO-60 36.6 08-NOV-12 ZN-65 69.7 08-NOV-12 CS-134 37.6 08-NOV-12 CS-137 41.2 08-NOV-12 FE-55 14,708.8 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 88

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-15 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 08-NOV-12 K-40 9,676.4 +/- 826.3 08-NOV-12 MN-54 38.3 08-NOV-12 CO-58 50.4 08-NOV-12 FE-59 109.5 08-NOV-12 CO-60 37.6 08-NOV-12 ZN-65 66.6 08-NOV-1 2 CS-134 36.3 08-NOV-1 2 CS-1 37 44.9 08-NOV-12 FE-55 15,003.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 89

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-17 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 08-NOV-12 K-40 9,296.6 +/- 919.7 08-NOV-12 MN-54 < 37.6 08-NOV-12 CO-58 < 49.7 08-NOV-12 FE-59 < 91.5 08-NOV-12 CO-60 < 37.6 08-NOV-1 2 ZN-65 < 71.5 08-NOV-1 2 CS-134 < 38.7 08-NOV-1 2 CS-137 < 53.7 08-NOV-1 2 FE-55 < 15,003.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 90

Exposure Pathway - Aquatic Bottom Sediment Location UHS 2012-9 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 02-MAY- 12 K-40 8,403.1 +/- 845.5 02-MAY- 12 MN-54 < 36.9 02-MAY- 12 CO-58 < 49.2 02-MAY- 12 FE-59 < 90.5 02-MAY- 12 CO-60 < 21.7 02-MAY- 12 ZN-65 < 72.0 02-MAY- 12 CS-1 34 < 28.4 02-MAY- 12 CS-137 < 39.6 02-MAY- 12 FE-55 < 16,396.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 91

Exposure Pathway - Aquatic Bottom Sediment Location UHS HS-3 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCiIKg Dry) 02-MAY-1 2 K-40 11,127.0 +/- 898.0 Duplicate 02-MAY-1 2 K-40 10,149.0 +/- 973.3 02-MAY-1 2 MN-54 42.7 Duplicate 02-MAY-1 2 MN-54 46.2 02-MAY-1 2 CO-58 52.6 Duplicate 02-MAY-1 2 CO-58 34.2 02-MAY-1 2 FE-59 78.4 Duplicate 02-MAY- 12 FE-59 125.9 02-MAY- 12 CO-60 34.0 Duplicate 02-MAY- 12 CO-60 25.0 02-MAY- 12 ZN-65 86.0 Duplicate 02-MAY- 12 ZN-65 64.7 02-MAY- 12 CS-134 30.8 Duplicate 02-MAY- 12 CS-1 34 37.7 02-MAY- 12 CS-1 37 72.9+1 36.2 Duplicate 02-MAY- 12 CS-1 37 i25.8+1 68.0 02-MAY- 12 FE-55 16,752.0 Duplicate 02-MAY- 12 FE-55 16,621.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 92

Exposure Pathway - Aquatic Bottom Sediment Location UHS HS-4 Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCi/Kg Dry) 08-NOV-1 2 K-40 9,566.8 +/- 1,050.0 08-NOV-1 2 MN-54 < 32.7 08-NOV-1 2 CO-58 < 35.1 08-NOV-1 2 FE-59 < 77.0 08-NOV-1 2 CO-60 < 21.4 08-NOV-12 ZN-65 < 84.5 08-NOV-12 CS-1 34 < 31.5 08-NOV-12 CS-137 67.5 +/- 33.2 08-NOV-12 FE-55 < 15,003.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 93

Exposure Pathway - Aquatic Vegetation Location DC-ALT Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 15-AUG-12 AMERICAN LOTUS BE-7 1,196.2 4 *-/- 173.8 15-AUG-12 AMERICAN LOTUS K-40 2,653.4 4 *-/- 287.5 15-AUG-12 AMERICAN LOTUS MN-54 < 9.4 15-AUG-12 AMERICAN LOTUS CO-58 < 13.2 15-AUG-12 AMERICAN LOTUS FE-59 < 19.8 15-AUG- 12 AMERICAN LOTUS CO-60 < 10.7 15-AUG- 12 AMERICAN LOTUS ZN-65 < 20.0 15-AUG- 12 AMERICAN LOTUS ZR-NB-95 < 9.5 15-AUG-12 AMERICAN LOTUS 1-131 < 19.8 15-AUG-12 AMERICAN LOTUS CS-134 < 12.2 15-AUG-12 AMERICAN LOTUS CS-137 < 11.7 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 94

Exposure Pathway - Aquatic Vegetation Location EEA Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 12-JUN-12 SPIKERUSH BE-7 454.7 +/- 76.7 12-JUN-12 SPIKERUSH K-40 4,600.8 +/- 225.6 12-JUN-12 SPIKERUSH MN-54 < 10.6 12-JUN-12 SPIKERUSH CO-58 < 8.2 12-JUN-12 SPIKERUSH FE-59 < .21.9 12-JUN-12 SPIKERUSH CO-60 < 7.1 12-JUN-12 SPIKERUSH ZN-65 < 20.6 12-JUN-12 SPIKERUSH ZR-NB-95 < 10.4 12-JUN-12 SPIKERUSH 1-131 < 27.3 12-JUN-12 SPIKERUSH CS-1 34 < 9.3 12-JUN-12 SPIKERUSH CS-137 < 11.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 95

Exposure Pathway - Aquatic Vegetation Location MUDS Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 05-SEP-12 AMERICAN PONDWEED BE-7 314.4 +/- 161.8 05-SEP-12 AMERICAN PONDWEED K-40 1,925.1 +/- 262.8 05-SEP-1 2 AMERICAN PONDWEED MN-54 < 11.2 05-SEP-12 AMERICAN PONDWEED CO-58 < 7.6 05-SEP-12 AMERICAN PONDWEED FE-59 < 25.3 05-SEP-12 AMERICAN PONDWEED CO-60 < 9.6 05-SEP-12 AMERICAN PONDWEED ZN-65 < 18.9 05-SEP-12 AMERICAN PONDWEED ZR-NB-95 < 11.9 05-SEP-12 AMERICAN PONDWEED 1-131 < 32.8 05-SEP-12 AMERICAN PONDWEED CS-1 34 < 9.9 05-SEP-12 AMERICAN PONDWEED CS-1 37 < 12.9 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 96

Exposure Pathway - Aquatic Vegetation Location SC Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Sample (pCi/Kg Wet) 29-MAY-1 2 CATTAILS BE-7 162.8 Duplicate 29-MAY- 12 CATTAILS BE-7 139.1 29-MAY- 12 CATTAI LS K-40 2,220.4 +1- 335.0 Duplicate 29-MAY- 12 CATTAI LS K-40 2,127.2 +1- 297.4 29-MAY- 12 CATTAI LS MN-54 11.6 Duplicate 29-MAY-1 2 CATTAI LS MN-54 12.9 29-MAY-1 2 CATTAILS CO-58 6.7 Duplicate 29-MAY-1 2 CATTAILS CO-58 10.3 29-MAY- 12 CATTAILS FE-59 22.9 Duplicate 29-MAY- 12 CATTAI LS FE-59 16.4 29-MAY- 12 CATTAI LS CO-60 9.4 Duplicate 29-MAY- 12 CATTAI LS CO-60 9.4 29-MAY- 12 CATTAI LS ZN-65 22.0 Duplicate 29-MAY- 12 CATTAI LS ZN-65 16.2 29-MAY-1 2 CATTAI LS ZR-NB-95 16.5 Duplicate 29-MAY-1 2 CATTAILS ZR-NB-95 11.1 29-MAY-12 CATTAILS 1-131 28.1 Duplicate 29-MAY- 12 CATTAI LS 1-131 14.6 29-MAY- 12 CATTAI LS CS-134 11.6 Duplicate 29-MAY- 12 CATTAI LS CS-134 12.4 29-MAY- 12 CATTAI LS CS-137 12.9 Duplicate 29-MAY- 12 CATTAI LS CS-137 14.2 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 97

Exposure Pathway - Terrestrial Vegetation Location EEA Collection Sample Nuclide Gamma Spectrum Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 12-JUN-12 PASTURAGE BE-7 1,084.4+/- 181.1 12-JUN-12 PASTURAGE K-40 13,379.0 +/- 532.9 12-JUN-12 PASTURAGE MN-54 < 15.4 12-JUN-12 PASTURAGE CO-58 < 16.9 12-JUN-12 PASTURAGE FE-59 < 36.4 12-JUN-12 PASTURAGE CO-60 < 17.5 12-JUN-12 PASTURAGE ZN-65 < 32.8 12-JUN-12 PASTURAGE ZR-NB-95 < 14.3 12-JUN-12 PASTURAGE 1-131 < 44.4 12-JUN-12 PASTURAGE CS-134 < 16.0 12-JUN-12 PASTURAGE CS-137 < 17.6 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 98

Exposure Pathway - Terrestrial Soil Location EEA Collection Nuclide Gamma Spectrum Duplicate Date Concentration Analysis (pCilKg Dry) 13-MAR-12 K-40 8,520.0 +/- 628.2 13-MAR- 12 MN-54 28.3 13-MAR-1 2 CO-58 26.0 13-MAR-1 2 FE-59 38.9 13-MAR-12 CO-60 14.9 13-MAR-12 ZN-65 44.5 13-MAR-12 CS-1 34 19.0 13-MAR- 12 CS-137 155.2 +/- 44.9 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 99

Exposure Pathway - Ingestion Meat Location A1.5 Collection Sample Nuclide Gamma Spectrum & H-3 Duplicate Date Description Concentration Analysis (pCi/Kg Wet) 17-SEP-12 DEER K-40 2,639.5+/- 258.2 17-SEP-12 DEER MN-54 10.4 17-SEP-12 DEER CO-58 8.0 17-SEP-12 DEER FE-59 20.1 17-SEP-12 DEER CO-60 8.8 17-SEP-12 DEER ZN-65 12.9 17-SEP-12 DEER CS-1 34 8.3 17-SEP-12 DEER CS-1 37 12.8 17-SEP- 12 DEER H-3 916.0 +/- 93.0 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C- 100

WOLF CREEK GENERATING STATION 2012 LAND USE CENSUS REPORT Revision 1 Ad F

Prepared by:

04/09/2013 Teresa L. Rice Date Peer Review:

04/09/2013 Dan E. Haines Date Approved by:

04/09/2013 Robert A. Hammond Date 2012 Land Use Census Report, Revision 1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 1

EXECUTIVE

SUMMARY

The 2012 Land Use Census Report has been revised to incorporate information received since the initial report was completed in October 2012.

The annual Land Use Census of rural residents within five miles of the Wolf Creek Generating Station (WCGS) has been completed in 2012 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.

The two broadleaf vegetation locations with the highest calculated annual average D/Q rankings are A2.60-17TE1520 and Q2.35-MILA1619. AP 07B-004 specifies, "Alternate sampling locations may be used to provide continued monitoring". The third-ranked garden is N2.38-RODR9. The landowners of these gardens have agreed to participate in the 2013 sample program.

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

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

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

METHODOLOGY Over two hundred 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.

2012 Land Use Census Report, Revision 1 2012 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.

One change was noted for the nearest occupied residences in each sector. That change occurred in sector R.

Ten 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.

2012 Land Use Census Report, Revision 1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 3

TABLE I 2012 Land Use Census Data Location of Nearest:

Sector Residence Milking Animals Broadleaf Garden A A2.60-17TE1 520 None A2.60-17TE1520 B B3.53-QURD1755 None None C C1.92-16RD1655 None C3.38-17RD1755 D D2.03-QULA1571 None D2.33-RERD1520 E E1.78-QULA1451 None None F F1.84-QULA1419 None F2.44-RERD1391 G G3.03-13RD1820 None None H H3.09-12RD1711 None H4.87-10RD1670 J J3.70-1 1 RD1 540 None J3.84-11 RD1499 K K2.70-12LA1439 None K4. 10-NARD1 120 L L2.10-NARD 1339 None L2.39-NARD1309 M M2.34-14RD1330 None M4.42-LYRD1231 N N2.08-15RD1350 None N2.38-RODR9 P P2.76-HW751534 None P3.17-WDST425 Q Q2.35-MILA1619 None Q2.35-MILA1619 R R2.08-NALN1650 None None Identifiers are based upon the following protocol:

EXAMPLE: A2.60-17TE1520 "A" = Sector A "2.60" = 2.60 miles from the reactor "17TE1520" = address 2012 Land Use Census Report, Revision 1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D-4

TABLE 2 SECTOR 2011 NEAREST 2012 NEAREST RESIDENCE RESIDENCE A A2.60-17TE1 520 A2.60-17TE1520 B B3.53-QURD1755 B3.53-QURD1755 C C1.92-16RD1655 Cl.92-16RD1655 D D2.03-QULA1571 D2.03-QULA1571 E E1.78-QULA1451 E1.78-QULA1451 F F1.84-QULA1419 F1.84-QULA1419 G G3.03-13RD1820 G3.03-13RD1820 H H3.09-12RD1711 H3.09-12RD1711 J J3.70-11RD1540 J3.70-11RD1540 K K2.70-12LA1439 K2.70-12LA1439 L L2.10-NARD1339 L2.10-NARD1339 M M2.34-14RD1330 M2.34-14RD1330 N N2.08-15RD1350 N2.08-15RD1350 P P2.76-HW751534 P2.76-HW751534 Q Q2.35-MILA1619 Q2.35-MILA1619 R R4.43-NARD1891 R2.08-NALN1650 NOTE: Entries underlined indicate changes from the 2011 Land Use Census.

2012 Land Use Census Report, Revision 1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 5

TABLE 3 2012 Land Use Census Milk and Garden Data SECTOR 2011 2012 2011 NEAREST 2012 NEAREST MILKING MILKING GARDEN GARDEN ANIMALS ANIMALS PRODUCING PRODUCING BROADLEAF BROADLEAF VEGETATION VEGETATION A None None A4.91-OXRD1940 A2.60-17TE1520 B None None None None C None None C4.63-RERD1825 C3.38-17RD1755 D None None D2.41-RERD1541 D2.33-RERD1520 E None None None None F None None F2.39-14RD1802 F2.44-RERD1391 G None None G3.77-12RD1831 None H None None H3.30-QURD1175 H4.87-10RD1670 J None None J4.00-PLRD1080 J3.84-11RD1499 K None None K4.10-NARD1120 K4.10-NARD1120 L None None None L2.39-NARD1309 M None None M3.10-13LA1290 M4.42-LYRD1231 N None None N2.38-RODR9 N2.38-RODR9 P None None P2.76-HW751534 P3.17-WDST425 Q None None Q2.35-MILA1619 Q2.35-MILA1619 R None None None None NOTE: Underlined entries indicate changes from the 2011 Land Use Census.

2012 Land Use Census Report, Revision 1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 6

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

DIST CALC NEAR NEAR FAR FAR SECTOR SECTOR (MI) (METERS) DIST D /Q DIST D/Q CALC RANKING A 2.60 4184 4000 1.76E-09 5000 1.19E-09 1.66E-09 1 B

C 3.38 5440 5000 3.03E-10 6000 2.23E-10 2.68E-10 11 D 2.33 3750 3000 4.46E-10 4000 2.67E-10 3.12E-10 10 EI F 2.44 3927 3000 7.22E-10 4000 4.33E-10 4.54E-10 6 G

H 4.87 7838 7000 3.83E-10 8000 3.09E-10 3.21E-10 9 J 3.84 6180 6000 4.33E-10 7000 3.22E-10 4.13E-10 7 K 4.10 6598 6000 3.82E-10 7000 2.84E-10 3.23E-10 8 '

L 2.39 3846 3000 1.04E-09 4000 6.24E-10 6.88E-10 4 M 4.42 7113 7000 2.13E-10 8000 1.72E-10 2.08E-10 12 N 2.38 3830 3000 1.25E-09 4000 7.51E-10 8.36E-10 3 P 3.17 5102 5000 4.68E-10 6000 3.44E-10 4.55E-10 5 Q 2.35 3782 3000 1.53E-09 4000 9.17E-10 1.05E-09 2 R _ 1 1 1 Originated by: Date: 4/09/13 Verified by: Date: 4/09/13 2012 Land Use Census Report, Revision 1 2012 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 7