Text

Annual Radiological Environmental Operating Report
	ML081230616
Person / Time
Site:	Wolf Creek
Issue date:	04/28/2008
From:	Flannigan R; Wolf Creek
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	RA 08-0037
	Download: ML081230616 (153)
	v • d • e

WeLF CREEK 'NUCLEAR OPERATING CORPORATION Richard D. Flannigan Manager Regulatory Affairs April 28, 2008 RA 08-0037 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: 2007 Annual Radiological Environmental Operating Report Gentlemen:

Enclosed is the Annual Radiological Environmental Operating Report, which is being submitted pursuant to Wolf Creek Generating Station (WCGS) Technical Specification 5.6.2. This report covers radiological environmental monitoring around WCGS for the period of January 1, 2007, through December 31, 2007.

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

Sincerely, Richard D. Flannigan RDF/rlt

Enclosure:

2007 Annual Radiological Environmental Operating Report cc: E. E. Collins (NRC), w/e V. G. Gaddy (NRC), w/e B. K. Singal (NRC), w/e Senior Resident Inspector (NRC), w/e P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831 An Equal Opportunity Employer M/F/HCNVET

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION 2007 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT Ak V

April 15, 2008

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 9 V. Interlaboratory Comparison Program Results 10 VI. Comparison to the Radioactive Effluents Release Program 10 Tables 11 Figures 19 Charts 24 Appendix A - Interlaboratory Comparison Program Results A-1 Appendix B -*Summary Tables B-1 Appendix C - 2007 Individual Sample Results C-1 Air Particulate and Charcoal Filters C-1 Quarterly Air Particulate - Gamma C-13 Surface Water C-25 Ground Water C-33 Drinking Water C-48 Quarterly Drinking Water - Tritium C-56 Shoreline Sediment C-58 Fish C-62 Food/Garden C-67 Feed and Forage C-76 Bottom Sediment C-79 Aquatic Vegetation C-83 Terrestrial Vegetation C-85 Soil C-87 Appendix D - 2007 Land Use Census Report D-1

LIST OF TABLES 1 Radiological Environmental Monitoring Program Description 11 2 Sample Location Identifiers, Distances (Miles) and Directions (Sectors) 16 3 TLD Results 18 LIST OF FIGURES 1 Airborne Pathway Sampling Locations 19 2 Direct Radiation Pathway Sampling Locations 20 3 Waterborne Pathway Sampling Locations 21 4 Ingestion Pathway Sampling Locations 22 5 Distant Sampling Locations 23 LIST OF CHARTS 1 Airborne Gross Beta Weekly Results 24 2 Historical Airborne Smoothed Indicator and Control Gross Beta 25 3 TLD Nearsite Locations and Control Locations 26 4 Coffey County Lake Surface Water Tritium Data 27 5 Drinking Water Gross Beta (5 years) 28 6 Detected Co-60 Activity in Coffey County Lake Discharge Cove Bottom Sediment 29 7 Detected Cs-1 37 Activity in Bottom Sediment 30 ii

EXECUTIVE

SUMMARY

Plant-related activation, corrosion or fission products were not detected during 2007 in airborne particulate and radioiodine filters, ground water, drinking water, shoreline sediment, broadleaf vegetation, crops, terrestrial vegetation, aquatic vegetation, or soil samples. Activation, corrosion or fission products attributable to plant operation were detected during 2007 in surface water, fish, and bottom sediment samples.

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

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

INTRODUCTION The 2007 Annual Radiological Environmental Operating Report for Wolf Creek Generating Station (WCGS) covers the period from January 1 through December 31, 2007. WCGS is located in Coffey County, Kansas, approximately five miles northeast of Burlington, Kansas.

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

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

I. PROGRAM DESCRIPTION Radiological environmental samples were collected according to the schedule in WCGS procedure AP 07B-004, Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program). Environmental samples were collected by the WCGS Environmental Management group and were analyzed by Environmental, Inc. Detroit Edison processed environmental thermoluminescent dosimeters (TLDs) at the Enrico Fermi 2 plant. Table 1 lists sampling pathways and frequencies of sampling and analysis. Table 2 lists each sample location's distance and direction from the plant. Samples in addition to those required by the WCGS Offsite Dose Calculation Manual (ODCM) were also obtained and analyzed.

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Pagel of30

A. Airborne Pathway Low volume air sampling pumps collected particulate and radioiodine samples on 47 mm glass fiber filters and charcoal canisters, respectively. The filters and charcoal canisters were changed out weekly, labeled, and shipped to Environmental, Inc. for analysis. During February of 2007, air samplers with digital flow meters were installed. These air sample units digitally display the total time, total volume and flow rate.

Gross beta analysis of the air particulate samples was performed after a nominal 72-hour period to allow the radon and thoron daughter products to decay.

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

Charcoal canisters were routinely counted in groups of five to determine the presence or absence of 1-131. Positive indication of 1-131 would have resulted in analysis of each individual charcoal canister.

Air samples were collected from six locations. Indicator locations 2, 37 and 49 are located in the three sectors with the highest ground level deposition constants (D/Q). Air sampling stations are also located in the community of New Strawn (indicator location 32) and a control location at Harris (location 48). Supplemental indicator location (location 18) was also sampled during the year. Distances and directions to sampling locations from the plant are listed in Table 2, indicator locations are shown in Figure 1, and the control location is shown in Figure 5.

B. Direct Radiation Pathway Panasonic UD-814 TLDs were used at 43 locations during the sample year. The TLDs consist of one lithium-borate element and three calcium sulfate elements in a plastic case.

TLDs were typically positioned roughly 3 to 4 feet above the ground in plastic thermostat boxes.

The thermostat boxes protect the TLDs from the elements and tampering. Two TLDs were placed at each designated location. The TLDs were changed out quarterly. Indicator TLD sample locations are illustrated in Figure 2 and control locations are shown in Figure 5. Table 2 provides the distance and direction of each location from the plant. Control locations were 39 (Beto Junction) and 48 (Harris).

C. Waterborne Pathway All water samples were analyzed to determine whether gamma emitters were present. . In addition to gamma isotopic analysis, radiochemical analysis for 1-131 was performed.: on drinking water and ground water samples. Gross beta analysis was also performed on drinking water samples. Tritium analysis was performed monthly by liquid scintillation for surface water and quarterly for drinking water. Tritium analysis was also performed on ground water samples. Water sampling locations are listed in Table 2 and are shown in Figures 3 and 5.

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 2 of 30

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

Drinking water was sampled at the water treatment facilities for the towns of Burlington (control location BW-1 5) and Iola (indicator location IO-DW). The Burlington facility is located upstream and the Iola facility is located downstream of the confluence of the discharge from Coffey County Lake and the Neosho River. Composite samples were obtained monthly from automatic samplers at each location that collected approximately 27 ml of drinking water every two hours.

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

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

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

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

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

E. Additional Samples Collected (not required by ODCM)

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

Shoreline sediments were collected at the Black Bear Bosin area (BBB) and the SC (Stringtown Cemetery). Gamma isotopic analysis was performed on the shoreline sediment samples.

These indicator samples were collected as part of a cooperative sampling effort with the Kansas Department of Health and Environment (KDHE). The sample locations are identified on Figure.3.

Bottom sediment samples were collected at the Environmental Education Area (EEA) and from the Make-Up Discharge Structure (MUDS). Gamma isotopic analysis was performed on the 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 3 of 30

bottom sediment samples. These indicator samples were collected as part of a cooperative sampling effort with the Kansas Department of Health and Environment (KDHE). The sample locations are identified on Figure 3.

Bottom sediment samples were collected semiannually at the Coffey County Lake discharge cove (DC) indicator location and the control location (JRR). Gamma isotopic analysis was performed on the bottom sediment 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 EEA and SC. Gamma isotopic analysis was performed on the aquatic vegetation samples. These samples were collected as part of a cooperative sampling effort with the KDHE. The sample locations are identified on Figure 3.

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

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

Distance and direction information for the sampling locations listed in this section are outlined in Table 2.

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

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

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

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

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 4 of 30

The gross beta results of 2007 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 2007 weekly gross beta analyses range for indicator locations was 0.010 to 0.062 pCi/m 3 , which was within the 1983 and 1984 pre-operational range. Additionally, the annual mean for indicator locations for 2007 (0.030 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 2007 (0.030 pCi/m 3) was similar to 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 2007, the range for Be-7 detected activity was 0.060 to 0.114 pCi/m 3 for indicator locations, and the annual mean for indicator locations was 0.091 pCi/m 3.

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

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

No effects of plant operation were seen via the airborne pathway for the year, and no unusual trends were noted.

B. Direct Radiation Pathway Quarterly gamma exposures measured at each location are shown in Table 3. Measured values have been converted to a standard 90-day quarter.

The annual mean of all indicator locations in 2007 was 0.212 mR/day and the annual mean for the control locations was 0.210 mR/day. For pre-operational comparison, in 1981, the annual mean of all indicator locations was 0.21 mR/day and annual mean for the control locations was 0.19 mR/day.

Results from TLDs located near the plant (less than three miles), which would be most affected by changes in plant operation, were combined into quarterly averages. These nearsite averages, using locations 1, 2, 7-9, 11-14, 18, 26, 27, 29, 30, 37 and 38 are compared to control location results (locations 39 and 48) in Chart 3. Chart 3 also includes preoperational data for comparison. The nearsite TLD locations have historically trended higher than the control locations both prior to and after WCGS became operational.

C. Waterborne Pathway (1) Surface Water Tritium, attributable to WCGS operation, was detected in all surface water samples collected from Coffey County Lake during 2007. Chart 4 illustrates the yearly averages of surface water tritium data for the spillway location. Chart 4 shows that the average tritium concentration of 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 5 of 30

the lake may have reached equilibrium since the last four years indicate a slightly downward trend.

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

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

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

(2) Ground Water ODCM required lower limits of detection were met and radioactivity was not detected in any ground water samples.

(3) Drinking Water Chart 5 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.

Gross beta activity was detected in all drinking water samples. The annual mean of the control location gross beta activity (3.0 pCi/L) was similar when compared to the annual mean of the indicator location (3.2 pCi/L). The 2007 annual means of gross beta activity for both the control and indicator locations were lower than those of the pre-operational monitoring year of 1984. In 1984, the annual mean of the control location gross beta activity was 6.4 pCi/L, and the annual mean of the indicator location gross beta activity was 7.5 pCi/L.

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

Activity due to plant operation was not evident in drinking water samples during 2007 and no unusual trends were noted.

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

Cs-137 activity was also detected in one shoreline sediment sample obtained from the control location (JRR).

ODCM required lower limits of detection were met. Activity due to plant operation was not evident in shoreline sediment samples during 2007 and no unusual trends were noted.

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 6 of 30

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

(2) Fish Naturally occurring K-40 activity was detected in all fish samples. K-40 activity was also detected during pre-operational fish monitoring.

During 2007, fish were also analyzed for tritium. All fish samples taken from Coffey County Lake had tritium activity detected (6,475 pCi/kg annual mean). The detected tritium activity was attributable to plant operation. An adult consuming 21 kilograms of fish, at the maximum measured tritium concentration for 2007 (7,266 pCi/kg), would receive a committed effective dose equivalent of 0.010 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.

The ODCM required lower limits of detection were met and no unusual trends were noted.

Activity attributable to plant operation was not detected.

(4) Crop Samples Gamma analysis detected naturally occurring K-40 to be present in all of the samples. K-40 activity was also detected during pre-operational crop monitoring. K-40 was the only activity detected in crop samples. The ODCM required lower limits of detection were met and no unusual trends were noted.

E. Additional Samples Collected (not required by ODCM)

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

Co-60 activity (107.9 and 88.7 pCi/kg) was detected in the indicator samples obtained from the Coffey County Lake discharge cove. Co-60 activity was attributable to plant operation and has been identified in plant effluents. Co-60 activity was not detected in pre-operational environmental monitoring and was not detected in samples collected from control location JRR 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 7 of 30

during 2007. Chart 6 plots the Co-60 detected activity from the discharge cove and reflects a decreasing trend. This downward trend is due to improvements made in the process system.

Cs-137 activity (179.8 and 167.7 pCi/kg) was detected in the indicator samples obtained from the Coffey County Lake discharge cove. A portion of this activity is due to fallout and a portion of this activity is likely plant-related since Cs-1 34 activity has been detected in the past. Cs-1 37 activity was detected in pre-operational samples, and the. results for 2007 indicator bottom sediment samples were within the pre-operational range. (Cs-137 activity detected in 1981 and 1982 was in the range of 79 to 953 pCi/kg. The decay corrected range of pre-operational Cs-137 activity detected is approximately 44 to 525 pCi/kg.) Cs-137 activity has been identified in plant effluents. Cs-137 activity (121.5 and 129.3 pCi/kg) was also detected in the control location (JRR) bottom sediment samples.

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 trend line indicates that as expected, Cs-137 activity detected at the JRR control location has been decreasing.

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

(2) Aquatic Vegetation Naturally occurring Be-7 and K-40 activity were detected in samples collected in 2007. Be-7 and K-40 activity were also detected during pre-operational monitoring.

No other radionuclides were detected in aquatic vegetation samples and no unusual trends were noted.

(3) Terrestrial Vegetation Naturally occurring Be-7 and K-40 activity were detected in samples collected in 2007. No other radionuclides were detected. No unusual trends were identified.

(4) Soil Naturally occurring K-40 activity was detected in both of the soil samples. K-40 activity was also detected during pre-operational soil monitoring.

Cs-137 activity (326.4 and 446.2 pCi/kg) was also detected in both of the soil samples. This activity is likely due to fallout. Data was reviewed for soil samples collected pre-operationally.

The Cs-137 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 153 to 1,296 pCi/kg.

The detected Cs-137 is well within the pre-operational decay corrected range.

No unusual trends were identified.

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 8 of 30

III. PROGRAM REVISIONS/CHANGES Based upon results from the corrective action program, the following TLD locations were added to the program during January 2007: 46, 44, 50, 51 and 52. The following TLD locations were removed from the program: 3, 10, 6, 21, 28, 31 and 33. These changes were made to enhance the effectiveness of the program.

On February 21, 2007, air sample pumps with digital flow meters were installed. Change was made to enhance air sample volume data that is used to calculate concentration.

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

Location Sample Period Percent Explanation of Deviation/

Discrepancy/ Condition Report (CR) Number/

Hours Comments Unavailable 48 02/28/07 - 03/07/07 96%/-161 Equipment Malfunction/

CR 2007-000939/

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

48 03/07/07- 03/14/07 >77%/-127 Equipment Malfunction/

CR 2007-000939 48 07/11/07 - 07/18/07 58%/-95 Equipment Malfunction/

CR 2007-002833 48 08/01/07 - 08/07/07 Unknown Equipment Malfunction/

CR 2007-002833/

Due to small sample volume, the LLDs for gross beta and 1-131 were not obtained.

Ground Water Samples During the first quarter of 2007, ground water was not sampled from location G-2. The landowner's water pump was out of service during this time.

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 9 of 30

V. INTERLABORATORY COMPARISON PROGRAM RESULTS During 2007, Environmental, Inc., Midwest Laboratory was contracted to perform radiological analysis of environmental samples for WCNOC. The lab participated in the intercomparison studies administered by Environmental Resources Associates. Appendix A is the Interlaboratory Comparison Program Results for Environmental, Inc., Midwest Laboratory.

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

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

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

Based upon these assumptions the dose to man from both pathways was calculated to be 0.110 mRem for 2007.

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 (10,442 pCi/L), would receive a committed effective dose equivalent of 0.477 mRem per year. For an adult eating 21 kg of fish per year from Coffey County Lake, using the average tritium activity (6,475 pCi/kg), would receive a committed effective dose equivalent of 0.009 mRem per year. Based upon the REMP results, the dose from both pathways was calculated to be 0.486 mRem per year.

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

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 10 of 30

TABLE 1 2007 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM DESCRIPTION (SAMPLE COLLECTION SPECIFIED BY ODCM)

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

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

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

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

Sample from a control location 9.5 to 18.5 miles distant in a low ranked D/Q sector (Location 48 on Figure 5) 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 11 of 30

TABLE 1 (Cont.)

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

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

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

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

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

20).

The balance of the stations to be placed in special interest areas such as population centers (Locations 23, 32 & 52), nearby residences 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 12 of 30

TABLE 1 (Cont.)

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

(many locations are riear a residence),

schools (Locations 23

, 52), Environmental EEducation Area (44),

W'CL Public Fishing C

/ ,rea (46) and in two careas to serve as

ontrol stations 10-20 rniles distant from the C

site (Locations 39 and z

18 on Figure 5).

WATERBORNE( See Figure 3)

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

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

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 13 of 30

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 10-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.

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 14 of 30

TABLE 1 (Cont.)

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

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

Broadleaf Samples of available Monthly when available Gamma isotopic Vegetation broadleaf vegetation analysis on edible from two indicator portions locations (using the criteria from the "Land Use Census" section) with highest calculated annual average D/Q (Locations Q-6 and N-1 and alternate location C-2 on Figure 4);

sample of similar broadleaf vegetation from a control location 9.5 to 18.5 miles distant in a low ranked D/Q sector (Location D-1 or alternate location D-2 on Figure 5).

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 15 of 30

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 48 14.7 ENE D 49 0.8 NNE B Dosimeters 1 1.4 N A 2 2.7 N A 4 4.1 NNE B 5 4.1 NE C 7 2.1 NE C 8 1.7 NNE B 9 2.0 ENE D 11 1.7 E E 12 1.9 ESE F 13 1.6 SE G 14 2.5 SE G 15 4.6 ESE F 16 4.3 E E 17 3.7 SE G 18 3.0 SSE H 19 3.9 SSE H 20 3.3 S J 22 3.9 SSW K 23 4.3 Sw L 24 4.1 WSW M 25 3.4 W N 26 2.4 WSW M 27 2.2 SW L 29 2.7 SSW K 30 2.5 W N 32 3.1 WNW P 34 4.4 NW Q 35 4.6 NNW R 36 4.2 N A 37 2.0 NNW R 38 1.2 NW Q 39 13.1 N A 41 0.8 NNW R 42 0.8 SSE H 43 0.7 WNW P 44 3.0 NNW R 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 16 of 30

TABLE 2 (Cont.)

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

Sample Type Location Distance from Direction Sector Identifier Reactor Dosimeters 46 1.6 WNW P 47 0.16 S J 48 14.7 ENE D 49 0.8 NNE B 50 3.6 ENE D 51 4.0 S J 52 3.6 SW L 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 BBB 2.4 NW Q DC 0.8 WNW P JRR 3.6 W N SC 0.8 NNW R Fish CCL 0.6 WNW P JRR 3.7 W N Food/Garden C-2 1.9 NE C D-2 14.8 ENE D N-1 2.4 W N Q-6 2.4 NW Q Crops NR-D1 8.9 S J NR-D2 11.5 S J NR-U1 4.0 SSW K Bottom Sediment DC 0.9 WNW P EEA 3.0 NNW R JRR 3.7 W N MUDS 1.5 WNW P Aquatic Vegetation EEA 3.0 NNW R SC 0.8 NNW R Terrestrial Vegetation EEA 3.0 NNW R MUDS 1.5 WNW P Soil EEA 3.0 NNW R MUDS 1.5 WNW P 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 17 of 30

TABLE 3 TLD Results (mR/S0-day qtr.)

Location Qtr. 1 Qtr. 1 2- Qtr. 2 Qtr. 2 2- Qtr. 3 Qtr. 3 2- Qtr. 4 Qtr. 4 2- Total 90-Day std. 90-Day std. 90-Day std. 90-Day std. Annual Avg. dev. Avg. dev. Avg. dev. Avg. dev. Exposure S_( mR) 1 19.9 1.5 20.4 0.9 21.4 5.1 19.6 1.5 81.3 2 19.5 3.4 17.8 0.6 17.9 1.1 17.1 0.9 72.3 4 21.3 3.5 19.3 1.0 20.1 1.5 18.5 1.0 792 5 20.1 4.4 17.5 1.4 18.6 1.0 17.2 1.1 73.3 7 19.6 2.0 19.4 2.4 18.4 1.1 18.1 1.0 75.5 8 20.2 1.8 20.6 3.1 20.9 1.2 19.1 2.7 80.8 9 18.0 0.8 18.2 2.2 17.8 2.0 16.8 0.6 70.8 11 22.4 3.4 20.5 1.6 20.1 1.5 19.4 0.7 82.4 12 20.9 3.5 21.2 3.3 20.9 1.6 18.4 1.0 81.3 13 21.0 3.6 20.5 1.5 21.4 4.2 19.2 1.6 82.1 14 21.2 1.5 20.3 1.1 20.8 1.8 18.4 1.7 80.7 15 20.0 2.0 20.3 1.8 19.4 1.3 18.7 1.2 78.4 16 19.8 1.9 19.2 1.8 18.8 1.8 17.8 1.2 75.6 17 20.7 3.1 19.5 0.4 20.3 2.5 17.2 1.0 77.8 18 19.4 1.0 19.5 1.0 18.4 0.3 17.5 0.4 74.9 19 19.9 0.9 21.5 1.3 19.2 0.7 18.5 1.5 79.1 20 19.6 3.4 21.0 1.5 18.3 1.4 18.6 2.8 77.5 22 22.3 3.9 21.6 0.8 20.2 0.9 19.8 3.0 84.0 23 19.2 1.1 22.3 2.0 18.0 0.5 17.7 1.3 77.2 24 19.4 1.9 20.0 0.8 18.6 1.4 18.2 1.5 76.2 25 18.6 4.0 17.9 0.8 17.2 1.6 161 1.0 69.7 26 18.0 1.2 20.4 3.2 19.1 4.5 16.8 0.9 74.3 27 19.3 0.4 21.2 1.0 19.7 1.6 18.5 1.1 78.7 29 16.8 0.9 17.0 0.3 16.4 3.2 15.3 1.3 65.5 30 19.5 0.5 19.9 0.7 190 1.4 19.5 2.5 78.0 32 17.9 1.7 18.7 0.9 20.2 1.2 17.5 3.2 74,3 34 21.2 2.9 20.6 1.3 18.9 1.0 18.2 1.1 78.9 35 20.2 1.8 20.6 1.0 19.8 3.0 18.0 1.2 78.7 36 20.2 2.3 19.9 1.3 19.2 3.5 18.9 1.7 78.1 37 18.2 1.1 18.9 1.2 18.0 0.8 17.6 2.1 72.8 38 20.4 1.1 22.0 2.4 23.4 0.9 19.2 1.0 85.0 39 18.0 1.4 20.6 1.3 17.3 0.9 17.9 2.1 73.8 41 21.3 1.9 20.4 0.8 20.1 4.0 19.3 1.8 81,1 42 14.5 1.2 15.9 1.4 13.0 1.3 13.5 1.1 56.9 43 13.8 0.7 16.6 1.5 12.5 0.4 12.7 1.0 55.6 44 19.1 1.2 20.8 1.3 18.0 1.2 17.9 0.4 75.8 46 18.8 1.8 20.1 1.7 19.4 1.6 17.6 0.7 75.8 47 19.3 1.4 20.0 1.9 18.2 3.0 17.6 2.4 75.1 48 20.0 1.9 21.7 1.7 17.8 1.6 17.8 1.3 77.3 49 18.9 1.6 19.9 2.1 17.6 1.9 19.8 1.7 76.3 50 20.6 1.4 25.0 4.7 19.2 1.0 19.2 1.4 84,0 51 18.6 1.0 21.6 4.0 19.3 2.0 18.7 2.3 78.1 52 19.7 1.1 22.0 1.1 20.5 1.1 18.7 1.2 80 ,8 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 18 of 30

FIGURE 1 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 19 of 30

FIGURE 2 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 20 of 30

FIGURE 3 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 21 of 30

FIGURE 4 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 22 of 30

FIGURE 5 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 23 of 30

CHART 1 2007 Airborne Gross Beta Weekly Results 0.070 0.060 a) 0.050 a)

E 0.040 a)

(n 0.030 0

(D 0.020 0.010 0.000 0 4 8 12 16 20 24 28 32 36 40 44 48 52 Week Number s Location 2

Location 18 + Location 32 L Location 37 -,- Location 48 (Control)

Location 49

.2007 Annual Radi0logical Environmental Operating Report - Wolf Creek Generating Station Page 24 of 30

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

E 0.060 C.)

B 0.050-

-0 0

0.040-0 0.

0 0.030-U) 0.020 E

0.010 a1)

N ,\O \1 Z

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

-- Smoothed Avg. Control Location (48) 2007 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 25 of 30

CHART 3 TLD Nearsite Locations and Control Locations 32.0 30.0 28.0 26.0 24.0 E 22.0 20.0 18.0 16.0 14.0 12.0 A-1980 1982 1984 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 e Avg. of Nearsite Locations A Avg. of Control Locations

-Moving Avg. of Nearsite Locations (2 period) - - - Moving Avg. of Control Locations (2 period) 2007 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 26 of 30

CHART 4 Coffey County Lake Surface Water Tritium Data 16000 14000 12000 10000

°j 8000 CI 6000 4000 2000 0 4-1987 1989 1991 1993 1995 1997 1999 2001 2003 2005 2007

Yearly Average of Spillway Location -Polynomial Trendline 2007 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 27 of 30

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

7 6

CI 5

09 co 4

(.3 3 2

1

,0. *. , . . . . . . . . . . ., *. * -

0 0 0IN0000 0"~~r0'O ~O"

N 0 0 N00 ro O b¢ O*~k ,*,

O",' *b

b'*OvO,

O* *

O*o * ',Z z, ")

- BW15 (Control) LW40 (Indicator) - - - NFDW (Indicator) - -IODW (Indicator) 2007 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 28 of 30

CHART 6 Detected Co-60 Activity in Coffey County Lake Discharge Cove Bottom Sediment 2500 2000 1500 CL 0.

1000 500 0

I*- co 0' 0 - N Co 'T Lto (o r- Co 0' 00 E- o Cq It O (D I.

O co c0 0) 0) 0) 0) 0M 0) 0) 0) 0) 0) 0 0 0 0 0 0 0 0 0M M 0) 0) 0) 0) 0) 0) 0) 0) 0) 0) M) 0 0 0 0 0 0 0 0

_,. ,_ . - ,- N N N N N N N N N 0 N N N N N N N 0N N N N N N N N N N (0

0 (0

0 0 (0 (0o0 0 0 (0 (

0 (0

0 0 (0

0 (0

0

(

0 (0

0 (D

0 (0

0 (D

0 (0

0 I-- *-- Co-60 -Polynomial Trendline I 2007 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 29 of 30

CHART 7 Detected Cs-137 Activity in Bottom Sediment 1000 900 800 700 600 500 CL) 400 300 200 100 n

oL - O 0 ' N *

o C 0 N N oMo o o o- N

'- ' 0* N* N0 N* ND I0 0C*

L i N 0 T-- 0* 0- -- 0-- *0 - '-. 0*-

0 0 0 0 0 0 0 0 0 0 0 '- 0 0 -" '- 0 ,- ' 00- 0 0

DC Cs-137 m JRR Cs-137 - Polynomial Trendline (DC) Polynomial Trendline (JRR) 2007 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station *Page 30 of 30

-Environmental, Inc.

Midwest Laboratory an Allegheny Technologies Co.

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

January through December, 2007

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

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

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

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

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

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

Table A-5 lists REMP specific analytical results from the in-house "duplicate" program for the past twelve month, 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 acceptance criteria for "spiked" samples.

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

Al

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

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

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

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

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

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

33 169.85 x (known)°'°9

> 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-1 31, 55 pCi/liter 6.0 pCi/liter Iodine-129b > 55 pCi/liter 10% of known value Uranium-238, :5 35 pCi/liter 6.0 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 Othersb 20% of known value a From EPA publication, "Environmental Radioactivity Laboratory Intercomparison Studies Program, Fiscal Year, 1981-1982, EPA-600/4-81-004.

b Laboratory limit.

A2

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

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits Acceptance STW-1 121 04/09/07 Sr-89 30.7 +/- 4.3 35.4 26.7 -44.1 Pass STW-1121 04/09/07 Sr-90 39.3 +/- 1.8 42.1 33.4 - 50.8 Pass STW-1 122 04/09/07 Ba- 133 30.0 +/- 2.4 29.3 20.6 - 38.0 Pass STW-1122 04/09/07 Co-60 118.5 +/- 3.9 119.0 109.0 - 129.0 Pass STW-1 122 04/09/07 Cs-134 52.6 +/- 2.3 54.3 45.6 - 63.0 Pass STW-1 122 04/09/07 Cs-137 49.5 +/- 3.8 50.3 41.6 - 59.0 Pass STW-1 122 04/09/07 Zn-65 91.7 +/- 6.3 88.6 73.3 - 104.0 Pass STW-1 123 04/09/07 Gr. Alpha 33.8 +/- 3.5 56.5 32.0 -81.0 Pass STW-1123 04/09/07 Gr. Beta 24.2 +/- 2.3 25.3 16.6 -34.0 Pass STW-1 124 04/09/07 1-131 19.2 +/- 1.2 18.9 13.7 -24.1 Pass STW-1125 04/09/07 H-3 7540.0 +/- 255.0 8060.0 6660.0 - 9450.0 Pass STW-1 125 04/09/07 Ra-226 13.0 +/- 0.6 13.4 9.9 - 16.9 Pass STW-1 125 04/09/07 Ra-228 19.9 +/- 2.7 18.2 10.3 -26.1 Pass STW-1 125 04/09/07 Uranium 4.5 +/- 0.2 4.6 0.0 -9.8 Pass STW-1 127 07/09/07 Sr-89 51.7 +/- 5.0 58.2 49.5 - 66.9 Pass STW-1 127 07/09/07 Sr-90 21.4 +/- 2.3 19.0 10.3 -27.7 Pass STW-1 128 07/09/07 Ba- 133 19.4 2.2 19.4 10.7 -28.1 Pass STW-1128 07/09/07 Co-60 32.8 +/- 2.0 33.5 24.8 - 42.2 Pass S-rW-1 128 07/09/07 Cs-134 67.0 +/- 2.9 68.9 60.2 - 77.6 Pass STW-1 128 07/09/07 Cs-137 61.6 +/- 3.8 61.3 52.6 - 70.0 Pass STW-1 128 07/09/07 Zn-65 55.6 +/- 7.5 54.6 45.2 -64.0 Pass STW-1 129 07/09/07 Gr. Alpha 19.2 +/- 1.6 27.1 15.4 -38.8 Pass STW-1129 07/09/07 Gr. Beta 9.1 +/-0.9 11.5 2.8 -20.2 Pass STW-1 130 07/09/07 Ra-226 7.0 +/- 0.5 7.7 5.7 -9.7 Pass STW-1 130 07/09/07 Ra-228 9.2 +/- 2.3 9.1 5.2 - 13.1 Pass STW-1 130 07/09/07 Uranium 23.9 +/- 1.1 25.1 19.9 -30.3 Pass STW-1 131 10/05/07 Sr-89 27.3 +/- 3.3 27.4 19.3 -33.9 Pass STW-1 131 10/05/07 Sr-90 17.7 +/- 1.2 18.2 12.9 -21.6 Pass STW-1 132 10/05/07 Ba-i 33 12.2 +/- 3.3 12.6 8.6 - 15.5 Pass S1IW-1 132 10/05/07 Co-60 23.8 +/- 1.4 23.2 19.9 -28.3 Pass STW-1 132 10/05/07 Cs-1 34 70.5 +/- 4.2 71.1 58.0 - 78.2 Pass STW-1 132 10/05/07 Cs-137 178.2 +/- 3.3 180.0 162.0 - 200.0 Pass STW-1132 10/05/07 Zn-65 263.9 +/- 6.9 251.0 226.0 - 294.0 Pass STW-1 133 10/05/07 Gr. Alpha 54.7 +/- 2.1 58.6 30.6 - 72.9 Pass STW-1 133 10/05/07 Gr. Beta 11.9 +/-0.9 9.7 4.3 - 18.2 Pass STW-1 134 10/05/07 1-131 33.0 +/- 1.5 28.9 24.0 - 33.8 Pass STW-1 135 10/05/07 H-3 9965.0 +/- 250.0 9700.0 8430.0 - 10700.0 Pass STW-1 135 10/05/07 Ra-226 12.7 +/- 0.2 12.9 9.6 - 14.9 Pass STW-1 135 10/05/07 Ra-228 19.6 +/- 2.4 17.9 12.0 -21.5 Pass STW-1 135 10/05/07 Uranium 27.3 +/- 1.1 27.5 22.1 - 30.8 Pass

' Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

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

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

A1-1

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

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resulte Resultc Limits Acceptance Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing In drinking water conducted by Environmental Resources Associates (ERA).

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

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

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

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

Al -2

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

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

2007-1 7/13/2007 30 cm. 54.25 60.56 +/- 5.54 37.98 - 70.53 Pass 2007-1 7/13/2007 40 cm. 30.51 34.23 +/- 0.96 21.36 - 39.66 Pass 2007-1 7/13/2007 50 cm. 19.53 17.95 +/- 1.86 13.67 - 25.39 Pass 2007-1 7/13/2007 60 cm. 13.56 16.61 +/- 0.60 9.49 - 17.63 Pass 2007-1 7/13/2007 70 cm. 9.96 9.72 +/- 0.90 6.97 - 12.95 Pass 2007-1 7/13/2007 80 cm. 7.63 7.79 +/- 0.33 5.34 - 9.92 Pass 2007-1 7/13/2007 90 cm. 6.03 5.53 +/- 0.72 4.22 - 7.84 Pass 2007-1 7/13/2007 100 cm. 4.88 5.32 +/- 0.17 3.42 -6.34 Pass 2007-1 7/13/2007 110 cm. 4.03 3.49 +/- 0.14 2.82 - 5.24 Pass 2007-1 7/13/2007 120 cm. 3.39 2.64 +/- 0.14 2.37 - 4.41 Pass 2007-1 7/13/2007 150 cm. 2.17 2.13 +/- 0.87 1.52 -2.82 Pass Environmental, Inc.

2007-2 11/12/2007 30 cm. 54.37 65.47 +/- 5.25 38.06 - 70.68 Pass 2007-2 11/12/2007 40 cm. 30.59 37.43 +/- 2.18 21.41 - 39.77 Pass 2007-2 11/12/2007 60 cm. 13.59 15.18 +/- 0.50 9.51 - 17.67 Pass 2007-2 11/12/2007 70 cm. 9.99 12.18 +/- 0.46 6.99 - 12.99 Pass 2007-2 11/12/2007 80 cm. 7.65 8.74 +/- 0.39 5.36 - 9.95 Pass 2007-2 11/12/2007 90 cm. 6.04 5.89 +/- 0.25 4.23 - 7.85 Pass 2007-2 11/1.2/2007 110 cm. 4.04 4.13 +/- 0.41 2.83 - 5.25 Pass 2007-2 11/12/2007 120 cm. 3.4 2.92 +/- 0.13 2.38 -4.42 Pass 2007-2 11/12/2007 120 cm. 3.4 2.91 +/- 0.31 2.38 - 4.42 Pass 2007-2 11/12/2007 150 cm. 2.17 1.95 +/- 0.72 1.52 -2.82 Pass 2007-2 11/12/2007 180 cm. 1.51 1.38 +/- 0.05 1.06 -1.96 Pass A2-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)3 Lab Code b Date Analysis Laboratory results Known Control 2s, n=l c Activity Limits d Acceptance W-30707 3/7/2007 Gr. Alpha 19.51 +/- 0.40 20.08 10.04 - 30.12 Pass W-30707 3/7/2007 Gr. Beta 67.45 +/- 0.49 65.73 55.73 - 75.73 Pass SPAP-1 566 3/23/2007 Cs-134 25.35 +/- 1.31 27.82 17.82 - 37.82 Pass SPAP-1566 3/23/2007 Cs-137 107.52 +/- 3.02 116.48 104.83 - 128.13 Pass SPW-1 568 3/23/2007 H-3 65595.00 +/- 672.00 71118.00 56894.40 - 85341.60 Pass SPW-1678 3/28/2007 Tc-99 28.44 +/- 1.12 32.35 20.35 - 44.35 Pass SPW-1595 4/5/2007 Cs-1 34 54.48 +/-2.12 54.99 44.99 - 64.99 Pass SPW-1 595 4/5/2007 Cs-137 59.03 +/- 2.94 58.19 48.19 - 68.19 Pass SPW-1595 4/5/2007 1-131(G) 83.11 +/-3.51 82.07 72.07 - 92.07 Pass SPW-1 595A 4/5/2007 1-131 78.40 +/- 1.10 82.07 65.66 - 98.48 Pass SPW-1595B 4/5/2007 1-131 78.97 +/- 1.10 82.07 65.66 - 98.48 Pass SPMI-1597 4/5/2007 Cs-134 54.03 +/- 2.15 54.99 44.99 - 64.99 Pass SPMI-1597 4/5/2007 Cs-1 37 59.81 +/- 4.75 58.19 48.19 - 68.19 Pass SPMI-1597 4/5/2007 1-131(G) 83.97 +/- 4.07 82.07 72.07 - 92.07 Pass SPMI-1597A 4/5/2007 1-131 79.53 +/- 1.03 82.07 65.66 - 98.48 Pass SPMI-1597B 4/5/2007 1-131 83.51 +/- 1.05 82.07 65.66 - 98.48 Pass SPCH-2839 5/17/2007 1-131(G) 78.70 +/- 7.36 70.40 60.40 - 80.40 Pass SPW-2847 5/17/2007 Cs-134 55.43 +/- 1.68 52.85 42.85 - 62.85 Pass SPW-2847 5/17/2007 Cs-137 59.86 +/-.2.71 58.03 48.03 - 68.03 Pass SPW-2847 5/17/2007 1-131(G) 63.95 +/- 2.69 70.87 60.87 - 80.87 Pass SPMI-2849 5/17/2007 Cs-134 51.37 +/- 1.65 52.85 42.85 - 62.85 Pass SPMI-2849 5/17/2007 Cs-137 60.42 +/- 4.31 58.03 48.03 - 68.03 Pass SPMI-2849 5/17/2007 1-131(G) 62.44 +/- 3.14 70.87 60.87 - 80.87 Pass SPCH-2922 5/17/2007 1-131(G) 80.00 +/- 6.40 70.40 41.60 - 99.20 Pass SPW-2847 5/18/2007 1-131 60.14 +/- 0.89 70.87 56.70 - 85.04 Pass SPW-2847 5/18/2007 Sr-89 104.93 +/- 6.64 121.90 97.52 - 146.28 Pass SPW-2847 5/18/2007 Sr-89 46.72 +/- 1.97 46.08 36.08 - 56.08 Pass SPMI-2849 5/18/2007 1-131 67.97 +/- 0.88 70.87 56.70 - 85.04 Pass SPW-2909 5/22/2007 Fe-55 11137.00 +/- 316.00 14271.50 11417.20 - 17125.80 Fail SPW-2911 5/22/2007 H-3 65023.00 +/- 679.00 70485.00 56388.00 - 84582.00 Pass SPAP-2913 5/22/2007 Gr. Beta 55.27 +/- 8.51 52.65 42.12 - 73.71 Pass SPAP-2915 5/22/2007 Cs-134 22.53 +/- 1.12 26.42 16.42 - 36.42 Pass SPAP-2915 5/22/2007 Cs-137 111.14 +/- 3.57 116.06 104.45 - 127.67 Pass SPF-2922 5/22/2007 Cs-134 0.52 +/- 0.03 0.53 0.32 - 0.74 Pass SPF-2922 5/22/2007 Cs-137 2.58 +/- 0.07 2.32 1.39 - 3.25 Pass SPW-3223 5/24/2007 Ni-63 2233.10 +/- 10.32 2135.90 1281.54 - 2990.26 Pass W-60507 6/5/2007 Gr. Alpha 20.93 +/- 0.42 20.08 10.04 - 30.12 Pass W-60507 6/5/2007 Gr. Beta 60.50 +/- 0.46 65.73 55.73 - 75.73 Pass SPW-4327 7/18/2007 Tc-99 25.58 +/- 1.11 32.35 20.35 - 44.35 Pass SPW-5476 8/17/2007 Ni-63 1925.18 +/- 9.62 2135.90 1281.54 -2990.26 Pass W-92107 9/21/2007 Gr. Alpha 23.02 +/- 0.44 20.08 10.04 - 30.12 Pass W-92107 9/21/2007 Gr. Beta 61.48 +/- 0.47 65.73 55.73 - 75.73 Pass A3-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)r Lab Code Date Analysis Laboratory results Known Control 2s, n=lb Activity Limitsc Acceptance SPW-6880 10/10/2007 Tc-99 30.97 +/- 1.21 32.35 20.35 - 44.35 Pass w-1 11007 11/10/2007 Gr. Alpha 22.43 +/- 0.42 20.08 10.04 - 30.12 Pass w-111007 11/10/2007 Gr. Beta 64.49 +/- 0.48 65.73 55.73 - 75.73 Pass SPAP-7742 11/13/2007 Cs-1 34 21.18 +/- 1.29 22.41 12.41 - 32.41 Pass SPAP-7742 11/13/2007 Cs-1 37 113.61 +/-3.16 114.76 103.28 - 126.24 Pass SPAP-7744 11/13/2007 Gr. Beta 53.41 +/- 0.13 52.03 41.62 - 72.84 Pass SPMI-7746 11/13/2007 Cs-134 42.20 +/- 1.48 44.83 34.83 - 54.83 Pass SPMI-7746 11/13/2007 Cs-1 37 56.05 +/- 2.83 57.40 47.40 - 67.40 Pass SPMI-7746 11/13/2007 Sr-90 41.02 +/-1.61 45.54 36.43 - 54.65 Pass SPW-7748 11/13/2007 Cs-1 34 43.11 +/-1.52 44.80 34.80 - 54.80 Pass SPW-7748 11/13/2007 Cs,137 59.28 +/- 3.50 57.40 47.40 - 67.40 Pass SPW-7748 11/13/2007 Sr-90 37.23 +/- 1.51 45.54 36.43 - 54.65 Pass SPW-7752 11/13/2007 Fe-55 12935.10 +/- 357.00 12640.50 10112.40 - 15168.60 Pass SPW-7758 11/13/2007 H-3 65405.00 + 712.50 68618.00 54894.40 - 82341.60 Pass SPF-7760 11/13/2007 Cs-134 0.45 +/- 0.02 0.45 0.27 -0.63 Pass SPF-7760 11/13/2007 Cs-137 2.45 +/- 0.07 2.29 1.37 -3.21 Pass SPW-8034 11/13/2007 Ni-63 2194.06 +/- 10.77 2129.03 1277.42 - 2980.64 Pass

" Liquid sample results are reported In pCi/Liter, air filters( pCi/filter), charcoal (pCi/m 3), and solid samples (pCi/g).

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

CH (charcoal canister), F (fish).

c Results are based on single determinations.

0Control limits are based on Attachment A, Page A2 of this report.

e Sample recount: 12557 +/- 335.

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

A3-2

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

W-30707 water 3/7/2007 Gr. Alpha 0.40 0.01 +/- 0.28 2 W-30707 water 3/712007 Gr. Beta 0.75 0.06 +/- 0.53 4 SPAP-1567 Air Filter 3/23/2007 Cs-1 34 0.79 100 SPW-1567 Air Filter 3/23/2007 Cs-1 37 1.01 100 SPW-1568 water 3/23/2007 H-3 176.10 -26.16 +/- 91.62 200 SPW-1596 water 4/5/2007 Cs-1 34 3.28 10 SPW-1596 water 4/5/2007 Cs-1 37 3.45 10 SPW-1596 water 4/5/2007 1-131 0.27 0.02 +/- 0.18 0.5 SPW-1 596 water 4/5/2007 1-131(G) 2.91 20 SPMI-1598 Milk 4/5/2007 Cs-134 3.30 10 SPMI-1598 Milk 4/5/2007 Cs-137 5.08 10 SPMI-1598 Milk 4/5/2007 1-131 0.26 -0.10 +/- 0.17 0.5 SPMI-1598 Milk 4/5/2007 1-131(G) 4.10 20 SPCH-2839 Charcoal Canister 5/17/2007 1-131(G) 2.24 9.6 SPW-2848 water 5/17/2007 Cs-134 3.14 10 SPW-2848 water 5/17/2007 Cs-137 1.37 10 SPW-2848 water 5/17/2007 1-131(G). 5.34 20 SPMI-2850 Milk 5/17/2007 Cs-134 3.32 10 SPMI-2850 Milk 5/17/2007 Cs-137 2.60 10 SPMI-2850 Milk 5/17/2007 1-131(G) 4.77 20 SPW-2848 water 5/18/2007 1-131 0.34 -0.06 +/- 0.19 0.5 SPW-2848 water 5/18/2007 Sr-89 0.81 -0.02 +/- 0.65 5 SPW-2848 water 5/18/2007 Sr-90 0.53 0.01 +/- 0.25 1 SPMI-2850 Milk 5/18/2007 1-131 0.45 0.20 +/- 0.26 0.5 SPMI-2850 Milk 5/18/2007 Sr-89 0.96 -0.73 +/- 1.02 5 SPMI-2850' Milk 5/18/2007 Sr-90 0.58 0.96 +/- 0.38 1 SPAP-2914 Air Filter 5/22/2007 Gr. Beta 0.004 -0.002 +/- 0.002 0.01 SPAP-2916 Air Filter 5/22/2007 Cs-134 2.84 100 SPAP-2916 Air Filter 5/22/2007 Cs-1 37 2.24 100 SPF-2923 Fish 5/22/2007 Cs-134 8.71 100 SPF-2923 Fish 5/22/2007 Cs-137 8.35 100 SPW-3224 water 5/24/2007 Ni-63 1.61 -0.30 +/- 0.84 20 W-60507 water 6/5/2007 Gr. Alpha 0.43 -0.01 +/- 0.30 2 W-60507 water 6/5/2007 Gr. Beta 0.77. 0.01 +/- 0.54 4 SPW-4328 water 7/18/2007 Tc-99 6.41 -3.12 +/- 3.84 10 SPW-5477 water 8/17/2007 Ni-63 1.48 4.38 +/- 1.01 20 W-92107 water 9/21/2007 Gr. Alpha 0.41 0.09 +/- 0.29 2 W-92107 water 9/21/2007 Gr. Beta 0.75 -0.26 +/- 0.51 4 A4-1

TABLE A-4. In-House "Blank" Samples Concentration (pCi/L)8 Lab Code Sample Date Analysisb Laboratory results (4.66o) Acceptance Type LLD Activityc Criteria (4.66 a)

SPW-6881 water 10/10/2007 Tc-99 6.82 -6.58 +/- 4.04 10 SPAP-7743 Air Filter 11113/2007 Gr. Beta 0.003 -0.002 +/- 0.002 0.01 SPMI-7745 Milk 11/13/2007 Cs-134 2.16 10 SPMI-7745 Milk 11/13/2007 Cs-1 37 3.46 10 SPMI-7745 Milk 11/13/2007 1-131(G) 5.89 20 SPMI-7745 Milk 11/13/2007 Sr-90 0.59 0.73 +/- 0.35 1 SPW-7747 water 11/13/2007 Cs-134 2.39 10 SPW-7747 water 11/13/2007 Cs-137 3.53 10 SPW-7747 water 11/13/2007 1-131(G) 12.51 20 SPW-7747 water 11/13/2007 Sr-90 0.71 -0.04 +/- 0.32 1 SPW-7751 water 11/13/2007 Fe-55 15.50 -4.18 +/- 9.20 1000 SPW-7757 water 11/13/2007 H-3 151.35 -14.98 +/- 78.85 200 SPF-7759 Fish 11/13/2007 Cs-1 34 5.50 100 SPF-7759 Fish 11/13/2007 Cs-1i37 5.10 100 SPW-8033 water 11/13/2007 Ni-63 1.45 -0.19 +/- 0.87 20 W-120607 water 12/6/2007 Gr. Alpha 0.40 0.02 +/- 0.28 2 W-120607 water 12/6/2007 Gr. Beta 0.77 -0.70 +/- 0.51 4

' Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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

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

d Low levels of Sr-90 are still detected in the environment. A concentration of (1-5 pCi/L) in milk is not unusual.

A4-2

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

Averaged Lab Code Date Analysis First Result Second Result Result Acceptance E-20, 21 1/2/2007 Gr. Beta 1.76 +/- 0.07 1.70 +/- 0.06 1.73 +/- 0.05 Pass E-20, 21 1/2/2007 K-40 1.49 +/- 0.24 1.57 +/- 0.27 1.53 +/- 0.18 Pass CF-41, 42 12/2007 Gr. Beta 18.02 +/- 0.41 18.81 +/- 0.42 18.42 +/- 0.29 Pass CF-41, 42 1/2/2007 K-40 11.68 +/- 1.12 12.67 +/- 0.97 12.18 +/- 0.74 Pass CF-41, 42 1/2/2007 Sr-90 0.039 +/- 0.011 0.026 +/- 0.010 0.033 +/- 0.007 Pass P-9516, 9517 1/3/2007 H-3 270.78 +/- 91.74 301.18 +/- 92.99 285.98 +/- 65.31 Pass LW-9579, 9580 1/4/2007 Gr. Beta 0.91 +/- 0.31 0.93 +/- 0.30 0.92 +/- 0.22 Pass DW-70085, 70086 1/9/2007 Gr. Alpha 7.95 +/- 1.20 7.92 +/- 1.42 7.94 +/- 0.93 Pass DW-70037, 70038 1/11/2007 Gr. Alpha 55.47 +/- 3.99 52.87 +/- 4.02 54.17 +/- 2.83 Pass DW-70054, 70055 1/18/2007 Gr. Alpha 2.68 +/- 0.88 1.88 +/- 0.78 2.28 +/- 0.59 Pass DW-70122, 70123 1/18/2007 Gr. Alpha 4.30'+/- 1.14 6.25 +/- 1.16 5.28 +/- 0.81 Pass DW-70122, 70123 1/18/2007 Gr. Beta 4.22 +/- 0.70 5.33 +/- 0.75 4.78 +/- 0.51 Pass DW-70098, 70099 1/25/2007 Gr. Alpha 3.27 +/- 0.90 1.97 +/- 0.92 2.62 +/- 0.64 Pass DW-70110, 70111 1/25/2007 Gr. Alpha 2.19 +/- 0.92 1.69 +/- 0.79 1.94 +/- 0.61 Pass SWU-676,677 1/30/2007 Gr. Beta 1.77 +/- 0.39 2.11 +/- 0.39 1.94 +/- 0.28 Pass DW-70148, 70149 1/30/2007 Gr. Alpha 4.65 +/- 1.37 5.20+/- 1.81 4.93 +/- 1.14 Pass SW-600, 601 2/1/2007 K-40 1.24 +/- 0.12 1.20 +/- 0.12 1.22 +/- 0.08 Pass SW-601, 602 2/1/2007 Gr. Beta 0.89 +/- 0.37 1.02 +/- 0.25 0.96 +/- 0.22 Pass DW-1138, 1139 2/9/2007 H-3 2707.00 +/- 161.00 2700.00 +/- 161.00 2703.50 +/- 113.84 Pass MI-721, 722 2/13/2007 K-40 1330.40 +/- 117.60 1316.40 +/- 116.50 1323.40 +/- 82.77 Pass SW-847, 848 2/13/2007 Gr. Alpha 3.82 +/- 1.67 2.61 +/- 1.24 3.22 +/- 1.04 Pass SW-847, 848 2/13/2007 Gr. Beta 7.33 +/- 1.37 5.89 +/- 0.90 6.61 +/- 0.82 Pass DW-70175, 70176 2/14/2007 Gr. Alpha 11.72 +/- 1.68 8.84 +/- 1.32 10.28 +/- 1.07 Pass DW-70187, 70188 2/14/2007 Gr. Alpha 6.79 +/- 1.18 6.47 +/- 1.08 6.63 +/- 0.80 Pass SWU-1162, 1163 2/27/2007 Gr. Beta 3.63 +/- 0.69 2.61 +/- 0.44 3.12 +/- 0.41 Pass DW-70205, 70206 2128/2007 Gr. Alpha 0.88 +/- 0.80 1.31 +/- 0.79 1.10 +/- 0.56 Pass PW-1117, 1118 3/1/2007 Gr. Alpha 3.79 +/- 1.91 3.62 +/- 2.09 3.71 +/- 1.42 Pass PW-1117, 1118 3/1/2007 Gr. Beta 7.12 +/- 1.40 7.20 +/- 1.39 7.16 +/- 0.99 Pass W-2122, 2123 3/5/2007 Gr. Alpha 6.10 +/- 4.16 3.80 +/- 4.30 4.95 +/- 2.99 Pass W-2122, 2123 3/5/2007 Gr. Beta 10.65 +/- 2.15 13.11 +/- 2.42 11.88 +/- 1.62 Pass W-2085, 2086 3/6/2007 Gr. Alpha 2.51 +/- 2.29 1.10 +/- 2.78 1.81 +/- 1.80 Pass W-2085, 2086 3/6/2007 Gr. Beta 11.02 +/- 1.85 9.50 +/- 2.01 10.26 +/- 1.37 Pass DW-70232, 70233 3/8/2007 Gr. Alpha 4.75 +/- 1.28 5.98 +/- 1.31 5.37 +/- 0.92 Pass WW-1477, 1478 3/12/2007 Gr. Beta 6.41 +/- 1.48 4.10 +/- 1.25 5.26 +/- 0.97 Pass WW-1498, 1499 3/15/2007 Gr. Beta 0.83 +/- 0.31 0.97 +/- 0.33 0.90 +/- 0.22 Pass W-2140, 2141 3/19/2007 Gr. Alpha 2.31 +/- 1.57 1.33 +/- 1.64 1.82 +/- 1.14 Pass W-2140, 2141 3/19/2007 Gr. Beta 4.26 +/- 1.00 5.58 +/- 1.02 4.92 +/- 0.71 Pass DW-1626, 1627 3/21/2007 H-3 4973.00 +/- 209.00 5190.00 +/- 213.00 5081.50 +/- 149.21 Pass MI-1647, 1648 3/21/2007 K-40 1448.80 +/- 120.20 1439.30 +/- 126.00 1444.05 +/- 87.07 Pass DW-70248, 70249 3/21/2007 Gr. Alpha 11.10 +/- 1.18 9.90 +/- 1.16 10.50 +/- 0.83 Pass W-2150, 2151 3/26/2007 Gr. Alpha 3.56 +/- 2.20 3.30 +/- 1.81 3.43 +/- 1.42 Pass W-2150, 2151 3/2612007 Gr. Beta 9.26 +/- 1.00 10.17 +/- 1.90 9.72 +/- 1.07 Pass LW-1941, 1942 3/31/2007 Gr. Beta 1.35 +/- 0.43 1.36 +/- 0.41 1.36 +/- 0.30 Pass A5-1

TABLE A-5. In-House "Duplicate" Samples Concentration (pCiVL)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance MI-1824, 1825 4/2/2007 K-40 1316.10 +/- 110.60 1229.80 +/- 110.50 1272.95 +/- 78.17 Pass MI-1824, 1825 4/2/2007 Sr-90 1.20 +/- 0.50 1.10 +/- 0.36 1.15 +/- 0.31 Pass AP-2170, 2171 4/2/2007 Be-7 0.08 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 Pass WW-1850, 1851 4/3/2007 H-3 -5.83 +/- 102.29 150.05 +/- 80.14 72.11 +/-64.97 Pass AP-2198, 2199 4/3/2007 Be-7 0.08 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 Pass AP-2370, 2371 4/3/2007 Be-7 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 Pass DW-70300, 70301 4/4/2007 Gr. Alpha 3.78 +/- 0.89 3.66 +/- 0.96 3.72 +/- 0.65 Pass DW-70300, 70301 4/4/2007 Gr. Beta 2.93 +/- 0.61 2.91 +/- 0.64 2.92 +/- 0.44 Pass DW-70335, 70336 4/5/2007 Gr. Alpha 24.37 +/- 2.89 22.72 +/- 2.91 23.55 +/- 2.05 Pass DW-70335, 70336 4/5/2007 Gr. Beta 20.26 +/- 1.37 18.33 +/- 1.34 19.30 +/- 0.96 Pass SW-1898, 1899 4/10/2007 Gr. Alpha 3.86 +/- 1.40 4.78 +/- 1.51 4.32 +/- 1.03 Pass SW-1898, 1899 4/1012007 Gr. Beta 6.31 +/- 1.36 7.03 +/- 1.42 6.67 +/- 0.98 Pass SW-1898, 1899 4/10/2007 H-3 241.99 +/- 93.35 318.10 +/- 96.48 280.04 +/- 67.12 Pass DW-70346, 70347 4/11/2007 Gr. Alpha 1.83 +/- 1.08 2.54 +/- 1.04 2.19 +/- 0.75 Pass DW-70346, 70347 4/11/2007 Gr. Beta 4.62 +/- 0.72 4.01 +/- 0.71 4.32 +/- 0.51 Pass DW-70376, 70377 4/11/2007 Gr. Alpha 1.81 +/- 0.80 1.66 +/- 0.86 1.74 +/- 0.59 Pass DW-70376, 70377 4/11/2007 Gr. Beta 1.84 +/- 0.62 2.24 +/- 0.61 2.04 +/- 0.44 Pass DW-70311, 70312 4/12/2007 Gr. Alpha 10.82 +/- 1.50 13.20 +/- 1.56 12.01 +/- 1.08 Pass WW-2349, 2350 4/17/2007 Gr. Alpha 0.71 +/- 0.56 0.62 +/- 0.52 0.66 +/- 0.38 Pass WW-2461,2462 4/25/2007 H-3 190.30 +/- 100.31 115.95 +/- 97.65 153.13 +/- 70.00 Pass LW-2437, 2438 4/26/2007 Gr. Beta 2.71 +/- 0.50 2.15 +/- 0.45 2.43 +/- 0.34 Pass LW-2917, 2918 4/30/2007 Gr. Beta 1.97 +/- 0.79 2.78 +/- 0.81 2.38 +/- 0.57 Pass SO-2583, 2584 5/1/2007 Be-7 544.99 +/- 247.70 601.13 +/- 192.20 573.06 +/- 156.76 Pass SO-2583, 2584 5/1/2007 Cs-137 119.22 +/- 36.61 87.46 +/- 23.97 103.34 +/- 21.88 Pass SO-2583, 2584 5/1/2007 K-40 17825.00 +/- 749.90 17672.00 +/- 724.30 17748.50 +/- 521.29 Pass SO-2583, 2584 5/1/2007 Gr. Alpha 11.49 +/- 3.96 8.04 +/-3.88 9.77 +/- 2.77 Pass SO-2583, 2584 5/11/2007 Gr. Beta 31.02 +/- 3.74 26.10 +/- 3.40 28.56 +/- 2.53 Pass SO-2583, 2584 5/11/2007 Sr-90 0.086 +/- 0.024 0.068 +/- 0.025 0.077 +/- 0.017 Pass S-2620, 2621 5/2/2007 H-3 277.90 +/- 126.70 304.40 +/- 101.00 291.15 +/- 81.02 Pass MI-2610, 2611 5/3/2007 K-40 1549.20 +/- 184.20 1388.80 +/- 128.20 1469.00 +/- 112.21 Pass W-4469, 4470 5/7/2007 Gr. Beta 10.60 +/- 1.90 11.10 +/- 1.80 10.85 +/- 1.31 Pass SS-2697, 2698 5/8/2007 Cs-137 0.06 +/- 0.02 0.05 +/- 0.03 0.05 +/- 0.02 Pass SS-2697, 2698 5/8/2007 K-40 8.03 +/- 0.57 7.36 +/- 0.68 7.70 +/- 0.44 Pass MI-2790, 2791 5/14/2007 K-40 1694.30 +/- 126.20 1627.60 +/- 128.80 1660.95 +/- 90.16 Pass W-4505, 4506 5/14/2007 Gr. Beta 3.30 +/- 1.70 3.90 +/- 1.50 3.60 +/- 1.13 Pass DW-3219, 3220 5/26/2007 1-131 0.62 +/- 0.32 0.69 +/- 0.31 0.66 +/- 0.22 Pass SO-3416, 3417 5/31/2007 Cs-137 0.15 +/- 0.03 0.15 +/- 0.03 0.15 +/- 0.02 Pass SO-3416, 3417 5/31/2007 Gr. Beta 22.88 +/- 2.33 22.46 +/- 2.37 22.67 +/- 1.66 Pass SO-3416, 3417 5/31/2007 K-40 12.26 +/- 0.80 12.36 +/- 0.65 12.31 +/- 0.52 Pass F-3561, 3562 5/31/2007 K-40 3.06 +/- 0.39 3.37 +/- 0.45 3.21 +/- 0.30 Pass SL-3311, 3312 6/4/2007 Be-7 0.61 +/- 0.29 0.55 +/- 0.25 0.58 +/- 0.19 Pass SL-3311, 3312 6/4/2007 K-40 5.78 +/- 0.67 4.87 +/- 0.25 5.33 +/- 0.36 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 SL-3992, 3993 6/4/2007 Be-7 0.75 +/- 0.19 0.74 +/- 0.32 0.75 +/- 0.19 Pass SL-3992, 3993 6/4/2007 Gr. Beta 13.61 +/- 1.12 14.06 +/- 1.08 13.84 +/- 0.78 Pass SL-3992, 3993 6/4/2007 K-40 2.43 +/- 0.36 2.29 +/- 0.40 2.36 +/- 0.27 Pass W-5087, 5088 6/1112007 Gr. Beta 8.70 +/- 1.90 7.70 +/- 1.90 8.20 +/- 1.34 Pass SW-3710, 3711 6/14/2007 H-3 9571.51 +/- 287.22 9879.21 +/- 291.42 9725.36 +/- 204.59 Pass W-4062, 4063 6/28/2007 Gr. Alpha 0.76 +/- 0.63 0.32 +/- 0.66 0.54 +/- 0.45 Pass W-4062, 4063 6/28/2007 Gr. Beta 0.97 +/- 0.53 0.58 +/- 0.57 0.78 +/- 0.39 Pass AP-4448, 4449 6/28/2007 Be-7 0.10 +/- 0.02 0.09 +/- 0.02 0.10 +/- 0.01 Pass SG-3735, 3736 6/30/2007 Be-7 0.84 +/- 0.12 0.82 +/- 0.18 0.83 +/- 0.11 Pass SG-3735, 3736 6/30/2007 Cs-137 0.07 +/- 0.01 0.07 +/- 0.01 0.07 +/- 0.01 Pass SG-3735, 3736 6/30/2007 Gr. Beta 29.51 +/- 2.22 30.81 + 2.22 30.16 +/- 1.57 Pass SG-3735, 3736 6/30/2007 K-40 9.41 +/- 0.31 8.90 +/- 0.48 9.16 +/- 0.29 Pass LW-4175, 4176 6/30/2007 Gr. Beta 2.18 +/- 0.60 1.93 +/- 0.68 2.06 +/- 0.45 Pass SG-5422, 5423 7/2/2007 Gr. Alpha 10.31 +/- 1.98 10.57 +/- 1.99 10.44 +/- 1.40 Pass SG-5422, 5423 7/2/2007 Gr. Beta 18.59 +/- 1.46 20.97 +/- 1.49 19.78 +/- 1.04 Pass AP-4656, 4657 7/3/2007 Be-7 0.09 +/- 0.02 0.10 +/- 0.02 0.10 +/- 0.01 Pass AP-4763, 4764 7/3/2007 Be-7 0.11 +/- 0.02 0.10 +/- 0.02 0.11 +/-0.01 Pass SG-5430, 5431 7/11/2007 Be-7 10.17 +/- 0.48 10.06 +/- 0.51 10.12 +/- 0.35 Pass SG-5430, 5431 7/11/2007 Cs-1 37 0.050 +/- 0.010 0.059 +/- 0.011 0.055 +/- 0.007 Pass SG-5430, 5431 7/11/2007 Gr. Alpha 17.86 +/- 2.78 15.74 +/- 2.70 16.80 +/- 1.94 Pass SG-5430, 5431 7/1112007 Gr. Beta 26.19 +/- 1.74 25.04 +/- 1.86 25.62 +/- 1.27 Pass SG-5430, 5431 7/11/2007 K-40 7.69 +/- 0.30 7.65 +/- 0.28 7.67 +/- 0.21 Pass WW-4298, 4299 7/12/2007 Gr. Beta 1.74 +/- 0.74 2.22 +/- 0.80 1.98 +/- 0.55 Pass DW-70612, 70613 7/23/2007 Gr. Alpha 4.54 +/- 1.11 4.19 +/- 0.97 4.37 +/- 0.74 Pass WW-4918, 4919 7/25/2007 H-3 240.43 +/- 111.12 216.68 +/- 110.27 .228.56 +/- 78.27 Pass MI-4742, 4743 7/26/2007 K-40 1820.30 +/- 134.10 1802.90 +/- 199.50 1811.60 +/- 120.19 Pass VE-4939, 4940 8/1/2007 Be-7 0.39 +/- 0.21 0.45 +/- 0.20 0.42 +/- 0.15 Pass VE-4939, 4940 8/1/2007 Gr. Beta 5.50 +/- 0.14 5.76 +/- 0.13 5.63 +/- 0.10 Pass VE-4939, 4940 8/1/2007 K-40 3.36 +/- 0.45 3.36 +/- 0.21 3.36 +/- 0.25 Pass SG-6274, 6275 816/2007 Gr. Alpha 16.68 +/- 3.29 19.26 +/- 3.39 17.97 +/- 2.36 Pass SG-6274, 6275 8/6/2007 Gr. Beta 40.93 +/- 2.74 42.42 +/- 2.66 41.68 +/- 1.91 Pass SW-5218, 5219 817/2007 1-131 1.31 +/- 0.24 1.42 +/- 0.24 1.37 +/-0.17 Pass SG-6284, 6285 8/8/2007 Cs-137 0.043 +/- 0.006 0.051 +/- 0.007 0.047 +/- 0.005 Pass SG-6284, 6285 8/8/2007 Gr. Alpha 9.38 +/- 2.93 13.61 +/- 3.38 11.50 +/- 2.24 Pass SG-6284, 6285 8/8/2007 Gr. Beta 33.46 +/- 2.84 32.87 +/- 2.93 33.17 +/- 2.04 Pass SG-6284, 6285 8/8/2007 K-40 16.15 +/- 0.24 16.23 +/- 0.25 16.19 +/- 0.17 Pass WW-5310, 5311 8/9/2007 H-3 644.00 +/- 106.00 831.00 +/- 113.00 737.50 +/- 77.47 Pass SW-5393, 5394 8/14/2007 Gr. Beta 2.32 +/- 1.31 1.71 +/- 1.27 2.02 +/- 0.92 Pass SW-5393, 5394 8/14/2007 H-3 190.06 +/- 86.80 69.05 +/- 80.88 129.55 +/- 59.32 Pass W-5468, 5469 8/15/2007 H-3 262.58 +/- 108.43 346.53 +/- 111.42 304.55 +/- 77.74 Pass A5-3

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance VE-5553, 5554 8/22/2007 K-40 ,1.89 +/- 0.33 1.89 +/- 0.22 1.89 +/- 0.20 Pass WW-5643, 5644 8/22/2007 H-3 259.00 +/- 110.00 266.00 +/- 110.00 262.50 +/- 77.78 Pass SWU-5799, 5800 8/28/2007 Gr. Beta 2.64 +/- 1.18 3.62 +/- 1.06 3.13 +/- 0.79 Pass DW-70752, 70753 8/31/2007 Gr. Alpha 14.41 +/- 1.48 12.90 +/- 1.50 .13.66 +/- 1.05 Pass VE-5917, 5918 9/4/2007 Be-7 0.94 +/- 0.17 0.83 +/- 0.20 0.89 +/- 0.13 Pass VE-5917, 5918 9/4/2007 K-40 3.73 +/- 0.37 3.58 +/- 0.36 3.66 +/- 0.26 Pass VE-5917, 5918 9/4/2007 Gr. Beta 2.71 +/- 0.10 2.69 +/- 0.10 2.70 +/- 0.07 Pass MI-6009, 6010 9/11/2007 K-40 1348.90 +/- 113.40 1388.10 +/- 116.40 1368.50 +/- 81.25 Pass MI-6030, 6031 .9/12/2007 K-40 1242.70 +/- 118.00 1475.60 +/- 119.60 1359.15 +/- 84.01 Pass MI-6030, 6031 9/12/2007 Sr-90 1.00 +/- 0.38 0.90 +/- 0.34 0.95 +/- 0.26 Pass DW-70718, 70719 9/12/2007 Gr. Alpha 23.04 +/- 3.71 23.22 +/- 3.61 23.13 +/- 2.59 Pass DW-70718, 70719 9/12/2007 Gr. Beta 16.13 +/- 1.59 17.36 +/- 1.69 16.75 +/- 1.16 Pass SO-6156, 6157 9/14/2007 H-3 181.99 +/- 90.67 232.19+/- 92.95 207.09 +/- 64.92 Pass SO-6484, 6485 9/17/2007 Cs-137 0.01 +/- 0.00 0.01 +/- 0.00 0.01 +/- 0.00 Pass SO-6484, 6485 9/1712007 Gr. Beta 24.20 +/- 2.60 23.30 +/- 2.30 23.75 +/- 1.74 Pass SO-6484, 6485 9/17/2007 K-40 11.52 +/- 1.16 10.89 +/- 1.10 11.20 +/- 0.80 Pass WW-6469, 6470 9/21/2007 Gr. Beta 27.19 +/- 2.51 24.23 +/- 2.29 25.71 +/- 1.70 Pass E-6647, 6648 10/11/2007 Gr. Beta 1.82 +/- 0.10 1.93 +/- 0.11 1.88 +/- 0.07 Pass E-6647, 6648 10/1/2007 K-40 1.48 +/- 0.24 1.31 +/- 0.23 1.40 +/- 0.17 Pass WW-6656, 6657 10/1/2007 Gr. Beta 2.80 +/- 0.97 1.95 +/- 0.87 2.38 +/- 0.65 Pass TD-7080, 7081 10/2/2007 H-3 332.00 +/- 229.00 383.00 +/- 191.00 357.50 +/- 149.10 Pass SG-6891, 6892 10/3/2007 Gr. Alpha 12.93 +/- 2.12 13.52 +/- 2.07 13.23 +/- 1.48 Pass SG-6891, 6892 10/3/2007 Gr. Beta 18.08 +/-1.41 18.27 +/- 1.36 18.18 +/- 0.98 Pass AP-7191, 7192 10/3/2007 Be-7 0.09 +/- 0.01 0.09 +/- 0.01 0.09 +/- 0.01 Pass WW-6786, 6787 10/8/2007 H-3 13333 +/- 322 13532 +/-324 13433 +/-228 Pass WW-6786, 6787 10/8/2007 H-3 13188 +/- 322 13556 +/-326 13372 +/-229 Pass VE-6828, 6829 10/8/2007 Gr. Alpha 0.06 +/- 0.04 0.06 +/- 0.05 0.06 +/- 0.03 Pass VE-6828, 6829 10/8/2007 Gr. Beta 5.55 +/- 0.21 5.20 +/- 0.22 5.38 +/- 0.10 Pass VE-6828, 6829 10/8/2007 K-40 5.45 +/- 0.43 5.20 +/- 0.49 5.32 +/- 0.33 Pass SS-6870, 6871 10/9/2007 Gr. Beta 18.10 +/- 2.08 21.71 +/- 2.19 19.90 +/- 1.51 Pass SS-6870, 6871 10/9/2007 K-40 10.19 +/- 0.66 9.72 +/- 0.68 9.95 +/- 0.47 Pass LW-7507, 7508 10/11/2007 Gr. Beta 1.40 +/- 0.56 1.44 +/- 0.54 1.42 +/- 0.39 Pass MI-6933, 6934 10/16/2007 K-40 1386.60 +/- 104.70 1331.20 +/- 106.70 1358.90 +/- 74.74 Pass MI-6933, 6934 10/16/2007 Sr-90 1.73 +/- 0.52 2.17 +/- 0.57 1.95 +/- 0.39 Pass MI-7059, 7060 10/17/2007 K-40 1424.80 +/- 106.60 1448.60 +/- 115.30 1436.70 +/- 78.51 Pass F-7213, 7214 10/24/2007 H-3 6.83 +/- 0.22 7.24 +/- 0.22 7.03 +/- 0.16 Pass F-7213, 7214 10/24/2007 K-40 3.13 +/-0.51 3.16 +/- 0.48 3.15 +/- 0.35 Pass WW-7408, 7409 10/24/2007 H-3 340.71 +/- 90.45 346.22 +/- 90.67 343.46 +/- 64.03 Pass DW-70856, 70857 10/24/2007 Gr. Alpha 11.03 +/- 1.66 10.71 +/- 1.34 10.87 +/- 1.07 Pass SO-7508, 7509 10/26/2007 Cs-137 0.30 +/- 0.04 0.29 +/- 0.05 0.29 +/- 0.03 Pass SO-7508, 7509 10/26/2007 Gr. Beta 34.43 +/- 2.72 37.25 +/- 3.07 35.84 +/- 2.05 Pass SO-7508, 7509 10/26/2007 K-40 16.84 +/- 0.84 17.43 +/- 1.05 17.14 +/- 0.67 Pass A5-4

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)r Averaged Lab Code Date Analysis First Result Second Result Result Acceptance SS-7529, 7530 10/29/2007 Cs-137 0.12 +/- 0.03 0.12 +/- 0.02 0.12 +/- 0.02 Pass SS-7529, 7530 10/29/2007 K-40 11.85 +/- 0.68 11.75 +/- 0.58. 11.80 +/- 0.45 Pass SW-7589, 7590 10/30/2007 Gr. Beta 1.75 +/- 0.29 1.24 +/- 0.26 1.50 +/- 0.19 Pass SWU-7733, 7734 10/30/2007 Gr. Beta 1.66 +/- 1.01 2.43 +/- 1.13 2.05 +/- 0.76 Pass MI-7618, 7619 10/31/2007 K-40 1376.80 +/- 114.30 1426.70 +/- 128.80 1401.75 +/- 86.10 Pass VE-7666, 7667 11/5/2007 Gr. Alpha 0.07 +/- 0.04 0.16 +/- 0.05 0.11 +/- 0.03 Pass VE-7666, 7667 11/5/2007 Gr. Beta 6.03 +/- 0.15 6.13 +/- 0.15 6.08 +/- 0.10 Pass VE-7666, 7667 11/5/2007 K-40 5.82 +/- 0.36 5.74 +/- 0.36 5.78 +/- 0.25 Pass DW-7853, 7854 11/9/2007 1-131 1.61 +/- 0.40 1.08 +/- 0.39 1.35 +/- 0.28 Pass MI-7874, 7875 11/14/2007 K-40 1407.70 +/- 101.30 1362.60 +/- 114.50 1385.15 +/- 76.44 Pass WW-8142, 8143 11/28/2007 Gr. Beta 9.51 +/- 2.21 7.86 +/- 2.01 8.68 +/- 1.49 Pass DW-8094, 8095 11/29/2007 Gr. Beta 1.60 +/- 0.58 1.25 +/- 0.54 1.43 +/- 0.40 Pass F-8328, 8329 12/11/2007 Gr. Beta 3.97 +/- 0.08 4.00 +/- 0.08 3.99 +/- 0.05 Pass WW-8378, 8379 12/11/2007 H-3 296.00 +/- 103.00 407.00 +/- 107.00 351.50 +/- 74.26 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.

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

A5-5

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STW-1110 01/01/07 Gr.Alpha 0A45 +/- 0.08 0.33 0.00 - 0.65 Pass STW-1110 01/01/07 Gr. Beta 0.90 +/- 0.14 0.85 0.43 - 1.28 Pass s-rw-111 e 01/01/07 Am-241 2.80 +/- 0.21 1.71 1.20 -2.22 Fail STW-1 111 01/01/07 Co-57 151.60 +/- 10.00 143.70 100.60- 186.80 Pass STW-1111 01/01/07 Cs-134 79.20 +/- 8.00 83.50 58.50 - 108.60 Pass STW-1111 01/01/07 Cs-137 168.70 +/- 12.10 163.00 114.10 - 211.90 Pass STW-1111 01/01/07 Fe-55 130.30 +/- 19.90 129.30 90.50 -168.10 Pass STW-1111 01/01/07 H-3 262.20 +/- 9.10 283.00 198.10 - 367.90 Pass STW-1111 01/01/07 Mn-54 130.60 +/- 11.50 123.80 86.70 - 160.90 Pass STW-1111 01/01/07 Ni-63 127.80 +/- 3.60 130.40 91.30 - 169.50 Pass STW-1111 01/01/07 Ni-63 127.80 +/- 3.60 130.40 91.30 -169.50 Pass STW-1111 01/01/07 Pu-238 2.03 +/- 0.17 2.25 1.58 -2.93 Pass STW-1111 01/01/07 Pu-239/40 2.27 +/- 0.17 2.22 1.55 -2.89 Pass STW-1111 01/01/07 Sr-90 9.60 +/- 1.40 8.87 6.21 -11.53 Pass STW-1111 01/01/07 Tc-99 8.80 +/- 1.50 88.00 7.40 - 13.70 Pass S-W--1111 01/01/07 U-233/4 2.44 +/- 0.21 2.49 1.74 - 3.24 Pass STW-1111 01/01/07 U-238 2.44 +/- 0.21 2.48 1.74-3.22 Pass

,STW-1111 01/01/07 Zn-65 123.70 +/- 17.00 114.80 80.40 - 149.20 Pass STSO-1112f 01/01/07 Am-241 46.40 +/- 9.00 34.80 24.40 - 45.20 Fail STSO-1112 01/01/07 Co-57 501.20 +/- 2.90 471.20 329.80 -612.60 Pass STSO-1112 01/01/07 Co-60 285.90 +/- 2.10 274.70 192.30 - 357.10 Pass STSO-1112 01/01/07 Cs-1 34 325.90 +/- 7.40 327.40 229.20 - 425.60 Pass STSO-1112 01/01/07 Cs-137 855.70 +/- 4.60 799.70 559.80 - 1039.60 Pass STSO-1112 01/01/07 Mn-54 750.90 +/- 4.70 685.20 479.60 - 890.80 Pass STAP-1113 01/01/07 Gr. Alpha 0.27 +/- 0.04 0.60 0.00-1.20 Pass STAP-1113 01/01/07 Gr. Beta 0.57 +/- 0.05 0.44 0.22 -0.66 Pass STAP-1 114 01/01/07 Am-241 0.10 +/- 0.03 0.10 0.07 -0.13 Pass STAP-1 114 01/01/07 Co-57 3.51 +/- 0.07 2.89 2.02 - 3.75 Pass STAP-1 114 01/01/07 Co-60 2.98 +/- 0.10 2.91 2.03 - 3.78 Pass STAP-1 114 01/01/07 Cs-1 34 4.02 +/- 0.16 4.20 2.94 - 5.45 Pass STAP-1 114 01/01/07 Cs-I 37 2.75 +/- 0.12 2.57 1.80-3.34 Pass STAP-1114 01/01/07 Mn-54 3.94 +/- 0.12 3.52 2.46 - 4.57 Pass STAP-1 114 01/01/07 Pu-238 0.07 +/- 0.01 0.07 0.05 - 0.09 Pass STAP-1 114 01/01/07 Pu-239/40 0.08 +/- 0.01 0.08 0.06 -0.11 Pass STAP-1 114 01/01/07 Sr-90 0.58 +/- 0.18 0.61 0.43 - 0.79 Pass STAP-1 114 01/01/07 U-233/4 0.09 +/- 0.01 0.10 0.07 -0.13 Pass STAP-1 114 01/01/07 U-238 0.09 +/- 0.01 0.10 0.07-0.13 Pass STAP-1 114 01/01/07 Zn-65 2.70 +/- 0.10 2.68 1.88 - 3.49 Pass A6-1

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

b Concentration Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STVE-1 115 01/01/07 Co-57 8.90 +/- 0.20 8.19 5.73 - 10.64 Pass STVE-1 115 01/01/07 Co-60 6.50 +/- 0.20 5.82 4.08 - 7.57 Pass STVE-1 115 01/01/07 Cs-134 6.90 +/- 0.30 6.21 4.35 - 8.07 Pass STVE-1115 01/01/07 Cs-137 8.20 +/- 0.30 6.99 4.90 - 9.09 Pass STVE-1115 01/01/07 Mn-54 10.10 +/- 0.30 8.46 5.91 - 10.98 Pass Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the Department of Energy's Mixed Analyte Performance Evaluation Program, Idaho Operations office, Idaho Falls, Idaho b Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

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

e Result of reanalysis, 2.08 +/- 0.13 pCi/L.

1The test samples were recounted on lower background detectors. Result of the recounts: 41.4 +/- 6.3 Bq/kg.

A6-2

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

Concentration (pCi/L)

Lab Code b Date Analysis Laboratory ERA Control Result c Result d Limits Acceptance STAP-1 116 03/19/07 Gr. Alpha 34.64 +/- 2.56 25.8 12.4 - 39 Pass STAP-1 116 03/19/07 Gr. Beta 93.41 +/- 3.20 79.5 48.8 -116 Pass STAP-1117 .03/19/07 Am-241 56.04 +/- 3.90 57.5 33.1 -80 Pass STAP-1117 03/19/07 Co-60 1610.00 +/- 8.40 1300.0 1010.0 - 1620 Pass STAP-1 117 03/19/07 Cs-1 34 1340.40 +/- 48.84 1120.0 732.0 -1380 Pass STAP-1117 e 03/19/07 Cs-137 345.30 +/- 8.20 255.0 192.0 -336 Fail STAP-1117' 03/19/07 Fe-55 < 134.0 0.0 Pass STAP-1117' 03/19/07 Mn-54 <5.0 0.0 Pass STAP-1117 03/19/07 Pu-238 43.32 +/- 2.28 37.4 25.7 -49 Pass STAP-1117 03/19/07 Pu-239/40 35.23 +/- 2.24 31.6 22.9 -41 Pass STAP-1117 03/19/07 Sr-90 156.10 +/- 6.60 156.0 66.6 - 246 Pass STAP-1 117 03/19/07 U-233/4 42.22 +/- 1.84 47.8 30.1 -71 Pass STAP-1117 03/19/07 U-238 42.00 +/- 1.84 47.4 30.2 -68 Pass STAP-1117 03/19/07 Uranium 85.79 +/- 3.60 97.3 49.5-155 Pass STAP-1117 03/19/07 Zn-65 363.80 +/- 11.90 245.0 208.0 -412 Pass STSO-1118 03/19/07 Ac-228 3097.77 +/- 94.96 2790.0 1790.0 -3930 Pass STSO-1118 03/19/07 Am-241 1000.70 +/- 156.10 927.0 548.0 -1200 Pass STSO-1118 03/19/07 Bi-212 2467.87 +/- 114.33 2500.0 658.0 -3730 Pass STSO-1118 03/19/07 Co-60 7847.40 +/- 86.60 7330.0 5340.0 - 9820 Pass STSO-1118 03/19/07 Cs-134 7910.60 +/- 356.88 7560.0 4850.0 - 9070 Pass STSO-1118 03/19/07 Cs-137 4635.00 +/- 99.10 4300.0 3290.0 -5580 Pass STSO-1118 03/19/07 K-40 12201.60 +/- 423.20 11100.0 8050.0 -15000 Pass STSO-1118t 03/19/07 Mn-54 <34.0 0.0 Pass STSO-1118 03/19/07 Pb-212 2046.80 +/- 127.20 1730.0 1120.0 -2430 Pass STSO-1118 03/19/07 Pb-214 4142.80 +/- 110.40 3330.0 1980.0 -4980 Pass STSO-1118 03/19/07 Pu-238 1099.20 +/- 73.10 857.0 490.0 -1200 Pass STSO-1118 03/19/07 Pu-239/40 1586.10 +/- 82.00 1360.0 928.0 -1810 Pass STSO-1118 03/19/07 Sr-90 6163.30 +/- 791.60 7500.0 2610.0 -12400 Pass STSO-1118 03/19/07 Th-234 4329.40 +/- 569.10 3590.0 2190.0 - 4560 Pass STSO-1118 03/19/07 U-233/4 3236.70 +/- 106.00 3620.0 2280.0 -4520 Pass STSO-1118 03/19/07 U-238 3425.20 +/- 134.00 3590.0 2190.0 -4560 Pass STSO-1118 03/19/07 Uranium 6787.80 +/- 240.00 7380.0 4210.0 - 9930 Pass STSO-1118 03/19/07 Uranium 6787.80 +/- 240.00 7380.0 4210.0 -9930 Pass STSO-1118f 03/19/07 Zn-65 0.00 +/- 0.00 0.0 0.0-0 Pass A7-1

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

Concentration (pCi/L)

Lab Code b Date Analysis Laboratory ERA Control Result c Result d Limits Acceptance STVE-1119 03/19/07 Am-241 3249.60 +/- 150.30 3550.0 2020.0 - 4890 Pass STVE-1119 03/19/07 Cm-244 1860.70 +/- 91.50 1840.0 905.0 -2870 Pass STVE-1 119 03/19/07 Co-60 2827.90 +/- 62.40 2600.0 1760.0 - 3720 Pass STVE-1119 03/19/07 Cs-1 34 654.80 +/- 48.40 579.0 308.0- 822 Pass STVE-1119 03/19/07 Cs-1 37 3307.30 +/- 58.80 2920.0 2150.0 - 4060 Pass STVE-1119 03/19/07 K-40 40814.20 +/- 618.80 37900.0 27200.0 - 53600 Pass STVE-1119' 03/19/07 Mn-54 < 27.6 0.0 Pass STVE-1 119 03/19/07 Pu-238 2762.00 +/- 251.10 2430.0 1250.0 - 3600 Pass STVE-1119 03/19/07 Pu-239/40. 2156.60 +/- 83.40 1900.0 1180.0 - 2600 Pass STVE-1119 03/19/07 Sr-90 8999.70 +/- 580.90 8890.0. 4900.0 - 11800 Pass STVE-1119 03/19/07 U-233/4 2821.90 +/- 73.50 2940.0 1930.0 - 3920 Pass STVE-1119 03/19/07 U-238 2896.10 +/- 50.70 2910.0 2090.0 - 3610 Pass STVE-1119 03/19/07 Uranium 5718.00 +/- 124.15 5980.0 4110.0 - 7770 Pass STVE-1 119 03/19/07 Zn-65 474.30 +/- 45.70 366.0 267.0 - 500 Pass STW-1120 03/19/07 Am-241 133.50 +/- 10.60 179.0 123.0 -243 Pass STW-1120 03/19/07 Co-60 541.40 +/- 9.00 536.0 467.0 - 631 Pass STW-1120 03/19/07 Cs-134 1623.80 +/- 66.10 1750.0 1290.0 - 2020 Pass STW-1120 03/19/07 Cs-137 1839.10 +/- 17.90 1850.0 1570.0 - 2220 Pass STW-1 120 03/19/07 Fe-55 829.50 +/- 226.80 671.0 392.0 -896 Pass STW-1 120' 03/19/07 Mn-54 <8.1 0.0 Pass STW-1120 03/19/07 Pu-238 123.30 +/- 4.30 116.0 87.6 - 144 Pass STW-1120 03/19/07 Pu-239/40 95.10 +/- 3.80 90.9 70.3-113 Pass STW-1 120 03/19407 Sr-90 949.40 +/- 16.70 989.0 630.0 - 1320 Pass STW-1120 03/19/07 U-233/4 164.20 +/- 6.58 192.0 145.0 -247 Pass STW-1120 03/19/07 U-238 169.20 +/- 8.22 190.0 145.0 -236 Pass STW-1120 03/19/07 Uranium 339.60 +/- 10.66 391.0 282.0 - 521 Pass STW-1120 03/19/07 Zn-65 2009.00 +/- 36.40 1910.0 1600.0 - 2410 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).

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 high bias (- 20%) was observed in gamma results for air filters. A composite filter geometry was used in the calculations vs. a single filter geometry. Result of recalculation. Cs-137, 305.8 +/- 6.0 pCi/filter, f Included in the testing series as a "false positive". No activity expected.

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 2007 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 48 (pCi/m 3) Gross Beta (318) 0.01 0.030 (265/265) 49 0.030(53/53) 0.029 (52/53) 0 (0.010-0.062) 0.8 miles NNE (0.016-0.062) (0.015-0.053)

Gamma (24)

Be-7 - 0.091 (20/20) 37 0.099 (4/4) 0.087 (4/4) 0 (0.060-0.114) 2.0 miles NNW (0.089-0.114) (0.067-0.106) 1-131 (318) 0.07 - (0/265) N/A N/A -(0/53) 0 External Stations 39 & 48 Radiation (mR/day) TLD (344) - 0.212 (328/328) 38 0.236 (8/8) 0.210 (16/16) 0 (0.139-0.278) 1.2 miles NW (0.213-0.260) (0.192-0.241)

Surface Water JRR (pCi/I) Gamma (24) -(0/12) N/A N/A -(0/12) 0 Tritium (24) 3000 10442 (12/12) SP 10442 (12/12) -(0/12) 0 (8262-12910) 3.2 miles SSE (8262-12910)

B-12 Ground Water (pCi/I) 1-131 (31) 1 -(0/27) N/A N/A -(0/4) 0 Gamma (31) -(0/27) N/A N/A -(0/4) 0 Tritium (31) 2000 -(0/27) 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 2007 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Drinking BW-15 Water 1-131 (24) 1 -(0/12) N/A N/A -(0/12) 0 (pCil/)

Gross Beta (24) 4 3.2 (12/12) IO-DW 3.2 (12/12) 3.0 (12/12) 0 (2.3-4.4) 26.1 miles SSE (2.3-4.4) (2.4-4.3)

Gamma (24) -(0/12) N/A N/A -(0/12) 0 Tritium (8) 2000 -(0/4) N/A N/A -(0/4) 0 Shoreline Gamma (7) JRR Sediment (pCi/kg dry) K-40 11545.4 (5/5) SC 12250(1/1) 11886(2/2) 0 (10851-12250) 0.8 miles NNW (11685-12087)

Cs-1 37 180 -(0/5) N/A N/A 108.2 (1/2) 0 Fish Gamma (17) JRR (pCi/kg wet)

K-40 2893.4 (11/11) CCL 2893.4 (11/11) 3174.4 (6/6) 0 (2302.9-3428.8) 0.6 miles (2302.9-3428.8) (2889.0-3681.5)

Tritium (17) 6475 (11/11) CCL 6475 (11/11) -(0/6) 0 (5505-7266) 0.6 miles (5505-7266)

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 2007 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 (22) D-2 Garden (pCi/kg wet) Be-7 1049.5 (8/13) Q-6 1463.9 (3/4) 742.4 (6/9) 0 (282.7-2727.4) 2.4 miles NW (282.7-2727.4) (472.3-973.8)

K-40 4281.2 (13/13) Q-6 5234.0 (4/4) 5744.4 (9/9) 0 (2495.7-8289.2) 2.4 miles NW (2495.7-8289.2) (3900.0-8653.1)

NR-U1 Crops Gamma (5)

(pCi/kg wet)

K-40 6454.9 (3/3) NR-D2 8993.2 (2/2) 9399.3 (2/2) 0 (1378.5-14596) 11.5 miles S (3390.3-14596) (2854.6-15944)

Bottom Gamma (6) JRR Sediment (pCi/kg dry)

K-40 10948.1 (4/4) DC 13185(2/2) 15196 (2/2) 0 (7502.3-13569) 0.9 miles WNW (12801-13569) (14889-15503)

Co-60 98.3 (2/4) DC 98.3 (2/2) -(0/2) 0 (88.7-107.9) 0.9 miles WNW (88.7-107.9)

Cs-1 37 173.7 (2/4) DC 173.7(2/2) 125.4 (2/2) 0 (167.7-179.8) 0.9 miles WNW (167.7-179.8) (121.5-129.3)

Page B-4

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

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2007 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Aquatic Gamma (2) No Control Vegetation (pCi/kg wet) Be-7 724.1 (2/2) EEA 1162.7(1/1) 0 (285.4-1162.7) 3.0 miles NNW K-40 2944.4 (2/2) EEA 3384.6 (1/1) 0 (2504.1-3384.6) 3.0 miles NNW Terrestrial Gamma (2) No Control Vegetation (pCi/kg wet) Be-7 573.5 (2/2) EEA 739.5 (1/1) 0 (407.5-739.5) 3.0 miles NNW K-40 5797.1 (2/2) EEA 7001.4 (1/1) 0 (4592.7-7001.4) 3.0 miles NNW Soil Gamma (2) No Control (pCi/kg dry)

K-40 10353.2 (2/2) MUDS 11616(1/1) 0 (9090.3-11616) 1.5 miles WNW Cs-137 386.3 (2/2) EEA 446.2 (1/1) 0 (326.4-446.2) 3.0 miles NNW Page B-5

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

Air Particulate and Charcoal Filters Location: 002 Gross Beta Collection Collection. Volume Concentration Concentration Duplicate 3

Start Date End Date M3 (pC0im ) (PCiJrri 3 ). Analysis 27-DEC-06 04-JAN-07 353 0. 022+/- 0.003 0.016 04-JAN-07 10-JAN-07 271 0. 019+/- 0.004 0.012 10-JAN-07 17-JAN-07 318 0. 037+/- 0.004 0.010 17-JAN-07 24-JAN-07 310 0. 033+/- 0.004 0.014 24-JAN-07 31-JAN-07 318 0.028+/- 0.004 0.011 31-JAN-07 07-FEB-07 319 0. 028+/- 0.004 0.013 07-FEB-07 14-FEB-07 320 0.028+/- 0.004 0.016 14-FEB-07 21-FEB-07 310 0.030+/- 0.004 K 0.010 21-FEB-07 28-FEB-07 299 0. 020+/- 0.003 K 0.016 21-FEB-07 28-FEB-07 299 0. 018+/- 0.003 Duplicate 28-FEB-07 07-MAR-07 325 0.027+/- 0.004 0.014 07-MAR-07 14-MAR-07 288 0. 034+/- 0.004 0.011 14-MAR-07 21-MAR-07 310 0.026+/- 0.004 0.011 21-MAR-07 28-MAR-07 311 0. 019+/- 0.003 0.015 28-MAR-07 04-APR-07 316 0.019+/- 0.003 0.018 04-APR-07 11-APR-07 347 0. 025+/- 0.003 0.009 11-APR-07 18-APR-07 309 0. 021+/- 0.004 0.010 18-APR-07 25-APR-07 303 0.027 +/- 0.004 0.008 25-APR-07 03-MAY-07 350 0. 013+/- 0.003 0.018 03-MAY-07 09-MAY-07 264 0.018+/- 0.004 0.016 09-MAY-07 17-MAY-07 339 0.028+/- 0.004 0.006 17-MAY-07 23-MAY-07 255 0.037+/- 0.005 0.016 23-MAY-07 31-MAY-07 342 0.019+/- 0.003 0.008 31-MAY-07 06-JUN-07 255 0.017+/- 0.004 0.012 06-JUN-07 13-JUN-07 299 0.023+/- 0.004 0.016 13-JUN-07 20-JUN-07 300 0.027+/- 0.004 0.018 20-JUN-07 27-JUN-07 300 0.020+/- 0.004 0.018 27-JUN-07 03-JUL-07 258 0.010+/- 0.003 0.032 03-JUL-07 11-JUL-07 327 0.027+/- 0.004 0.015 11-JUL-07 18-JUL-07 281 0.034+/- 0. 004 0.014 18-JUL-07 25-JUL-07 300 0.025+/- 0.004 0.017 25-JUL-07 01-AUG-07 293 0.035+/- 0.004 0.011 01-AUG-07 07-AUG-07 251 0.046+/- 0.005 0.021 07-AUG-07 15-AUG-07 351 0.041+/- 0.004 0.012 15-AUG-07 22-AUG-07 296 0. 037+/- 0.004 0.013 22-AUG-07 29-AUG-07 298 0.024+/- 0.003 K 0.014 29-AUG-07 06-SEP-07 347 0.037+/- 0.004 < 0.019 06-SEP-07 12-SEP-07 256 0.029+/- 0.004 K 0.021 12-SEP-07 19-SEP-07 299 0.032+/- 0.004 <

0.015 19-SEP-07 26-SEP-07 305 0.047+/- 0.004 <

0.013 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 1

Air Particulate and Charcoal Filters Location: 002 Gross Beta 1-131.

4Collecto Collection Volumea Concentration Concentration Duplicate.

End Date M3 (p~i/M3 (pCi/m 3 ) 2Analysis

>3/4Start Date 26-SEP-07 03-OCT-07 307 0.038+/- 0.004 < 0.016 03-OCT-07 10-OCT-07 308 0.021+/- 0.004 < 0.018 10-OCT-07 19-OCT-07 375 0.024+/- 0.003 < 0.015 19-OCT-07 24-OCT-07 224 0.027+/- 0.004 < 0.014 24-OCT-07 31-OCT-07 295 0.025+/- 0.004 < 0.013 24-OCT-07 31-OCT-07 295 0.030+/- 0.004 Duplicate 31-OCT-07 07-NOV-07 299 0.031+/- 0.004

0.011 31-OCT-07 07-NOV-07 299 0.026+/- 0.004 Duplicate 07-NOV-07 14-NOV-07 292' 0.045+/- 0. 005 0.012 14-NOV-07 20-NOV-07 256 0.033+/- 0.005 0.012 20-NOV-07 28-NOV-07 366 0.030+/- 0.003 0.009 28-NOV-07 05-DEC-07 301 0.038+/- 0.004 0.012 05-DEC-07 12-DEC-07 304 0.039+/- 0.004 K 0.018 12-DEC-07 20-DEC-07 343 0.055+/- 0.005 K 0.014 20-DEC-07 27-DEC-07 313 0.048+/- 0.005 K 0.020 27-DEC-07 03-JAN-08 292 0.039+/- 0.004 K 0.020 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 2

Air Particulate and Charcoal Filters Location: 018 Grs ea 1-131:

S, Collection Collection Y olume Concentration Concentration Duplicate

<Start Date~ End D~ate M3 (pciI&ý) (3/4.M Analysis 27-DEC-06 04-JAN-07 338 0.023+/- 0.003 K 0.017 04-JAN-07 10-JAN-07 258 0.017+/- 0.004 K 0.012 10-JAN-07 17-JAN-07 308 0.031+/- 0.004 K 0.011 17-JAN-07 24-JAN-07 293 0.034+/- 0.004 K 0.015 24-JAN-07 31-JAN-07 307 0.024+/- 0. 004 K 0.011 31-JAN-07 07-FEB-07 296 0.031+/- 0.004 K 0.014 07-FEB-07 14-FEB-07 295 0.036+/- 0.004 K 0.017 14-FEB-07 21-FEB-07 298 0.027+/- 0.004 K 0.010 21-FEB-07 28-FEB-07 299 0.017+/- 0.003 K 0.016 28-FEB-07 07-MAR-07 314 0.025+/- 0.004 K 0.015 07-MAR-07 14-MAR-07 303 0.035+/- 0.004 K 0.011 07-MAR-07 14-MAR-07 303 0.034+/- 0.004 Duplicate 14-MAR-07 21-MAR-07 307 0.026+/- 0.004 0.012 21-MAR-07 28-MAR-07 308 0.018+/- 0.003 0.015 28-MAR-07 04-APR-07 294 0.019+/- 0.004 0.019 04-APR-07 11-APR-07 299 0.024+/- 0.004 0.011 11-APR-07 18-APR-07 309 0.020+/- 0.004 0.010 18-APR-07 25-APR-07 299 0.023+/- 0.004 0.008 25-APR-07 03-MAY-07 367 0.016+/- 0.003 0.017 03-MAY-07 09-MAY-07 265 0.017+/- 0.004 0.016 09-MAY-07 17-MAY-07 336 0.028+/- 0.004 0.006 17-MAY-07 23-MAY-07 251 0. 026+/- 0.004 0.016 23-MAY-07 31-MAY-07 349 0.018+/- 0.003 0.008 31-MAY-07 06-JUN-07 257 0. 022+/- 0.004 0.012 06-JUN-07 13-JUN-07 301 0.021+/- 0.004 0.016 13-JUN-07 20-JUN-07 313 0.027+/- 0.004 0.018 20-JUN-07 27-JUN-07 301 0.021+/- 0.004 0.018 27-JUN-07 03-JUL-07 269 0. 013+/- 0.003 0.031 03-JUL-07 11-JUL-07 345 0.028+/- 0.004 0.014 03-JUL-07 11-JUL-07 345 0. 028+/- 0.004 Duplicate 11-JUL-07 18-JUL-07 293 0.031+/- 0. 004 K 0.013 18-JUL-07 25-JUL-07 309 0.027 +/- 0. 004 K 0.016 25-JUL-07 01-AUG-07 299 0. 037+/- 0.004 K 0.011 01-AUG-07 07-AUG-07 267 0. 047+/- 0.005 K 0.020 07-AUG-07 15-AUG-07 353 0. 038+/- 0.004 K 0.012 15-AUG-07 22-AUG-07 288 0.039+/- 0.004 K 0.013 22-AUG-07 29-AUG-07 300 0.027+/- 0.004 K 0.014 29-AUG-07 06-SEP-07 355 0. 036+/- 0.004 K 0.018 06-SEP-07 12-SEP-07 262 0.033+/- 0.004 K 0.021 12-SEP-07 19-SEP-07 301 0.031+/- 0.004 K 0.015 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 3

Air Particulate and Charcoal Filters Location: 018 Gross Beta 1-131;:

Collection. collection VoIuMe~ Concentration, <Concentra~tion Duplicate S~tart Date~ 'End Date M3 (pCi/M 3 ). (pCiIin3 ') Analysis 19-SEP-07 26-SEP-07 305 0.044+/- 0.004 0.013 26-SEP-07 03-OCT-07 303 0. 039+/- 0.004 0.016 03-OCT-07 10-OCT-07 303 0.020+/- 0.004 0.018 10-OCT-07 19-OCT-07 385 0.023+/- 0.003 0.015 19-OCT-07 24-OCT-07 223 0.026+/- 0.004 0.014 24-OCT-07 31-OCT-07 297 0.028+/- 0.004 0.013 31-OCT-07 07-NOV-07 303 0.028+/- 0.004 0.011 07-NOV-07 14-NOV-07 294 0.054+/- 0.005 0.012 07-NOV-07 14-NOV-07 294 0.056+/- 0.005 Duplicate 14-NOV-07 20-NOV-07 264 0.028+/- 0.004

0.012 14-NOV-07 20-NOV-07 264 0.029+/- 0.004 Duplicate 20-NOV-07 28-NOV-07 355 0. 032+/- 0.004

0.009 20-NOV-07 28-NOV-07 355 0.033+/- 0.004 Duplicate 28-NOV-07 05-DEC-07 301 0.040+/- 0.004 0.012 05-DEC-07 12-DEC-07 303 0.041+/- 0.004 0.018 12-DEC-07 20-DEC-07 356 0. 052 +/- 0.004 0.013 20-DEC-07 27-DEC-07 305 0.044+/- 0. 005 0.020 27-DEC-07 03-JAN-08 302 0.041+/- 0.004 0.019 27-DEC-07 03-JAN-08 302 0.042+/- 0.004 Duplicate 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 4

Air Particulate and Charcoal Filters Location: 032 27-DEC-06 04-JAN-07 358 0.022+/- 0.003 0.016 04-JAN-07 10-JAN-07 276 0.015+/- 0.004 0.012 10-JAN-07 17-JAN-07 308 0. 027 +/- 0.004 0.011 17-JAN-07 24-JAN-07 289 0.034+/- 0.004 0.015 24-JAN-07 31-JAN-07 304 0.026+/- 0.004 0.012 31-JAN-07 07-FEB-07 299 0.029+/- 0.004 0.014 07-FEB-07 14-FEB-07 305 0.029+/- 0.004 0.016 14-FEB-07 21-FEB-07 306 0.026+/- 0.004 0.010 21-FEB-07 28-FEB-07 299 0.020+/- 0.003 0.016 28-FEB-07 07-MAR-07 326 0.022+/- 0.003 0.014 07-MAR-07 14-MAR-07 299 0.038+/- 0.004 0.011 14-MAR-07 21-MAR-07 314 0.025+/- 0.004 0.011 21-MAR-07 28-MAR-07 314 0.018+/- 0.003 0.015 28-MAR-07 04-APR-07 311 0.017+/- 0.003 0.018 04-APR-07 11-APR-07 291 0.023+/- 0.004 0.011 11-APR-07 18-APR-07 312 0.022+/- 0.004 0.010 18-APR-07 25-APR-07 300 0. 026+/- 0.004 0.008 25-APR-07 03-MAY-07 355 0.015+/- 0.003 0.018 03-MAY-07 09-MAY-07 271 0.017+/- 0.004 0.016 09-MAY-07 17-MAY-07 344 0.031+/- 0.004 0.005 17-MAY-07 23-MAY-07 253 0.030+/- 0.005 0.016 23-MAY-07 31-MAY-07 350 0.019+/- 0.003 0.008 31-MAY-07 06-JUN-07 258 0.020+/- 0.004 0.012 06-JUN-07 13-JUN-07 308 0.023+/- 0.004 0.016 13-JUN-07 20-JUN-07 300 0.028+/- 0.004 0.018 20-JUN-07 27-JUN-07 306 0.020+/- 0.004 0.018 27-JUN-07 03-JUL-07 265 0.013-/- 0.004 0.031 03-JUL-07 11-JUL-07 351 0.031+/- 0.004 0.014 11-JUL-07 18-JUL-07 291 0.030+/- 0.004 0.013 18-JUL-07 25-JUL-07 303 0.026+/- 0.004 0.017 25-JUL-07 01-AUG-07 301 0.034+/- 0.004 0.011 01-AUG-07 07-AUG-07 259 0.046+/- 0.005 0. 021 07-AUG-07 15-AUG-07 355 0.041+/- 0.004 0.012 15-AUG-07 22-AUG-07 296 0.035+/- 0.004 0.013 22-AUG-07 29-AUG-07 304 0.026+/- 0. 003 0.014 29-AUG-07 06-SEP-07 362 0. 037 +/- 0.004 0.018 06-SEP-07 12-SEP-07 268 0. 028+/- 0.004 0.020 12-SEP-07 19-SEP-07 298 0. 027+/- 0.004 0.015 19-SEP-07 26-SEP-07 303 0.042+/- 0.004 0.013 26-SEP-07 03-OCT-07 310 0.035+/- 0.004 0.016 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 5

Air Particulate and Charcoal Filters Location: 032

<~ ;, Gross Beta 1-13T Collection Collection Volume> Concentration Cocnrto Dulct Start Date End Date M3 j(pCiirn3) (p~i/m 3 ) Anpualysi 03-OCT-07 10-OCT-07 308 0.029+/- 0.004 0.018 10-OCT-07 19-OCT-07 384 0.022+/- 0.003 K 0.015 19-OCT-07 24-OCT-07 221 0.027+/- 0.004 K 0.014 24-OCT-07 31-OCT-07 297 0.028+/- 0.004 K 0.013 31-OCT-07 07-NOV-07 302 0.030+/- 0.004 K 0.011 07-NOV-07 14-NOV-07 290 0.049+/- 0.005 K 0.012 14-NOV-07 20-NOV-07 262 0.027+/- 0.004 K 0.012 20-NOV-07 28-NOV-07 357 0.035+/- 0.004 K 0.009 28-NOV-07 05-DEC-07 301 0.040+/- 0.004 K 0.012 05-DEC-07 12-DEC-07 308 0.043+/- 0.004 K 0.018 12-DEC-07 20-DEC-07 355 0.050+/- 0.004 K 0.013 20-DEC-07 27-DEC-07 310 0.045+/- 0.004 K 0.020 27-DEC-07 03-JAN-08 310 0.039+/- 0.004 K 0.019 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 6

Air Particulate and Charcoal Filters Location: 037 27-DEC-06 04-JAN-07 342 0. 021+/- 0.003 K 0.017 04-JAN-07 10-JAN-07 262 0.019+/- 0.004 K 0.012 10-JAN-07 17-JAN-07 308 0.032+/- 0.004 K 0.011 17-JAN-07 24-JAN-07 295 0.032+/- 0.004 K 0.014 24-JAN-07 31-JAN-07 309 0. 028+/- 0.004 K 0.011 31-JAN-07 07-FEB-07 289 0. 028+/- 0.004 K 0.015 07-FEB-07 14-FEB-07 284 0. 028+/- 0.004 K 0.018 14-FEB-07 21-FEB-07 301 0.027 +/- 0.004 K 0.010 21-FEB-07 28-FEB-07 303 0. 019+/- 0. 003 0.016 28-FEB-07 07-MAR-07 318 0. 023+/- 0.004 K 0.015 07-MAR-07 14-MAR-07 289 0.037+/- 0.004 K 0.011 14-MAR-07 21-MAR-07 304 0. 024+/- 0.004 K 0.012 14-MAR-07 21-MAR-07 304 0.026+/- 0.004 Duplicate 21-MAR-07 28-MAR-07 308 0.020+!- 0.004 0.015 28-MAR-07 04-APR-07 314 0.020+/- 0.004 0.018 04-APR-07 11-APR-07 253 0. 029+/- 0.005 0.013 11-APR-07 18-APR-07 311 0.024+/- 0.004 0.010 18-APR-07 25-APR-07 294 0. 025+/- 0.004 0.008 25-APR-07 03-MAY-07 351 0. 018+/- 0.003 0.018 03-MAY-07 09-MAY-07 270 0.017+/- 0.004 0.016 09-MAY-07 17-MAY-07 342 0.029+/- 0.004 0.006 17-MAY-07 23-MAY-07 258 0.029+/- 0.004 0.015 23-MAY-07 31-MAY-07 344 0. 016+/- 0.003 0.008 31-MAY-07 06-JUN-07 259 0. 021+/- 0.004 0.012 06-JUN-07 13-JUN-07 309 0.022 +/- 0.004 0.015 13-JUN-07 20-JUN-07 313 0.024 +/- 0.004 0.018 20-JUN-07 27-JUN-07 311 0. 020+/- 0.003 0.018 27-JUN-07 03-JUL-07 267 0. 012+/- 0.003 0.031 03-JUL-07 11-JUL-07 351 0.029+/- 0.004 0.014 11-JUL-07 18-JUL-07 298 0. 031+/- 0.004 0.013 18-JUL-07 25-JUL-07 308 0.024 +/- 0.004 0.016 25-JUL-07 01-AUG-07 308 0.032+/- 0.004 0.010 01-AUG-07 07-AUG-07 266 0.044+/- 0.005 0.020 07-AUG-07 15-AUG-07 360 0.038+/- 0.004 0.011 15-AUG-07 22-AUG-07 300 0. 038+/- 0.004 0.013 22-AUG-07 29-AUG-07 298 0.025+/- 0.003 0.014 29-AUG-07 06-SEP-07 353 0.043+/- 0.004 0.018 06-SEP-07 12-SEP-07 261 0. 028+/- 0.004 0.021 06-SEP-07 12-SEP-07 261 0.032+/- 0.004 Duplicate 12-SEP-07 19-SEP-07 301 0.035+/- 0.004 < 0.015 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 7

Air Particulate and Charcoal Filters Location: 037 19-SEP-07 26-SEP-07 303 0. 047+/- 0.004 < 0.013 19-SEP-07 26-SEP-07 303 0.044+/- 0.004 Duplicate 26-SEP-07 03-OCT-07 306 0. 041+/- 0.004 0.016 03-OCT-07 10-OCT-07 311 0.021+!- 0.004 0.018 10-OCT-07 19-OCT-07 384 0.027+/- 0. 003 K 0.015 19-OCT-07 24-OCT-07 222 0.024+/- 0.004 K 0.014 24-OCT-07 31-OCT-07 294 0. 030+/- 0.004 K 0.013 31-OCT-07 07-NOV-07 302 0. 030+/- 0.004 K 0.011 07-NOV-07 14-NOV-07 298 0. 041+/- 0.005 K 0.012 14-NOV-07 20-NOV-07 267 0.028+/- 0.004 K 0.012 20-NOV-07 28-NOV-07 376 0.035+/- 0.004 K 0.009 28-NOV-07 05-DEC-07 304 0. 041+/- 0.004 K 0.011 28-NOV-07 05-DEC-07 304 0. 040+/- 0.004 Duplicate 05-DEC-07 12-DEC-07 304 0.043+/- 0.004 0.018 12-DEC-07 20-DEC-07 348 0. 057+/- 0.005 0.014 12-DEC-07 20-DEC-07 348 0. 058+/- 0.005 0.014 Duplicate 20-DEC-07 27-DEC-07 293 0.047+/- 0.005 0.021 27-DEC-07 03-JAN-08 323 0. 043+/- 0.004 0.018 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 8

Air Particulate and Charcoal Filters Location: 048 27-DEC-06 04-JAN-07 338 0.019+/- 0.003 0.017 04-JAN-07 10-JAN-07 260 0.015+/- 0.004 0.012 10-JAN-07 17-JAN-07 308 0.031+/- 0.004 0.011 17-JAN-07 24-JAN-07 295 0.039+/- 0.004 0.014 24-JAN-07 31-JAN-07 304 0.026+/- 0.004 0.012 31-JAN-07 07-FEB-07 298 0.027+/- 0.004 0.014 07-FEB-07 14-FEB-07 310 0.034+/- 0.004 0.016 14-FEB-07 21-FEB-07 311 0.027+/- 0.004 0.010 21-FEB-07 28-FEB-07 298 0.019+/- 0.003 0.016 28-FEB-07 07-MAR-07 12 0.024+/- 0.062 0.386 07-MAR-07 14-MAR-07 68 0. 051 +/- 0.013 0.048 14-MAR-07 21-MAR-07 295 0.026+/- 0.004 0.012 21-MAR-07 28-MAR-07 304 0.019+/- 0.003 0.015 28-MAR-07 04-APR-07 305 0.021+/- 0.004 0.018 04-APR-07 11-APR-07 298 0.022+/- 0.004 0.011 11-APR-07 18-APR-07 306 0.020+/- 0.004 0.010 18-APR-07 25-APR-07 307 0.024+/- 0.004 0.008 25-APR-07 03-MAY-07 358 0.015+/- 0. 003 0.018 03-MAY-07 09-MAY-07 266 0.016+/- 0.004 0.016 03-MAY-07 09-MAY-07 266 0.016+/- 0.004 Duplicate 09-MAY-07 17-MAY-07 330 0.029+/- 0.004 0.006 17-MAY-07 23-MAY-07 263 0.032+/- 0.004 0.015 23-MAY-07 31-MAY-07 354 0. 020+/- 0.003 0.008 31-MAY-07 06-JUN-07 268 0. 021+/- 0.004 0.012 06-JUN-07 13-JUN-07 301 0.024+/- 0.004 0.016 13-JUN-07 20-JUN-07 300 0.033+/- 0.004 0.018 20-JUN-07 27-JUN-07 298 0.022+/- 0.004 0.018 27-JUN-07 03-JUL-07 266 0. 020+/- 0.004 0.031 03-JUL-07 11-JUL-07 343 0. 028+/- 0.004 0.014 11-JUL-07 18-JUL-07 122 0. 029+/- 0.007 0.032 18-JUL-07 25-JUL-07 293 0. 027 +/- 0.004 0.017 25-JUL-07 01-AUG-07 300 0. 035+/- 0.004 0.011 01-AUG-07 07-AUG-07 54 0.021 0. 100 07-AUG-07 15-AUG-07 337 0. 039+/- 0.004 0.012 15-AUG-07 22-AUG-07 296 0.034 +/- 0.004 0.013 22-AUG-07 29-AUG-07 300 0.024+/- 0.003 < 0.014 29-AUG-07 06-SEP-07 351 0.037 +/- 0.004 < 0.018 06-SEP-07 12-SEP-07 263 0.026+/- 0.004 < 0.021 12-SEP-07 19-SEP-07 299 0. 033+/- 0.004 K 0.015 19-SEP-07 26-SEP-07 298 0.037+/- 0.004 K 0.014 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 9

Air Particulate and Charcoal Filters Location: 048 26-SEP-07 03-OCT-07 301 0.034+/- 0.004

0.016 03-OCT-07 10-OCT-07 318 0.020+/- 0.003

0.017 10-OCT-07 19-OCT-07 376 0.026+/- 0.003

0.015 10-OCT-07 19-OCT-07 376 0.024+/- 0.003 Duplicate 19-OCT-07 24-OCT-07 219 0.024+/- 0.004

0.014 19-OCT-07 24-OCT-07 219 0.020+/- 0.004 Duplicate 24-OCT-07 31-OCT-07 296 0.022+/- 0.004 K 0.013 31-OCT-07 07-NOV-07 300 0.028+/- 0.004 K 0.011 07-NOV-07 14-NOV-07 298 0.036+/- 0.004 < 0.012 14-NOV-07 20-NOV-07 267 0.031+/- 0.004 K 0.012 20-NOV-07 28-NOV-07 353 0.025+/- 0.003 K 0.009 28-NOV-07 05-DEC-07 308 0.039+/- 0.004 K 0.011 05-DEC-07 12-DEC-07 303 0.040+/- 0.004 K 0.018 12-DEC-07 20-DEC-07 350 0.053+/- 0.004 K 0.013 20-DEC-07 27-DEC-07 308 0.047+/- 0.005 < 0.020 27-DEC-07 03-JAN-08 306 0.040+/- 0.004 < 0.019 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 10

Air Particulate and Charcoal Filters Location: 049

-Gross Beta .1-131:

Collection Collection Volume Concentration C moncentration Duplicate s

Start Date End Date m3S,(pCi/m 3) (pCi/m 3 ) Analysis 27-DEC-06 04-JAN-07 342 0. 022+/- 0.003 < 0.017 27-DEC-06 04-JAN-07 342 0.024+/- 0. 003 Duplicate 04-JAN-07 10-JAN-07 267 0. 019+/- 0. 004 0.012 10-JAN-07 17-JAN-07 313 0. 033+/- 0.004 0.010 17-JAN-07 24-JAN-07 295 0.037+/- 0.004 0.014 24-JAN-07 31-JAN-07 303 0. 030+/- 0.004 0.012 31-JAN-07 07-FEB-07 309 0. 028+/- 0.004 0.014 07-FEB-07 14-FEB-07 305 0. 030+/- 0.004 0.016 14-FEB-07 21-FEB-07 305 0.025+/- 0.004 0.010 21-FEB-07 28-FEB-07 303 0. 018+/- 0.003 0.016 28-FEB-07 07-MAR-07 320 0. 026+/- 0.004 0.015 07-MAR-07 14-MAR-07 294 0. 033+/- 0.004 0.011 14-MAR-07 21-MAR-07 312 0.026+/- 0.004 0.011 21-MAR-07 28-MAR-07 317 0. 019+/- 0.003 0.015 28-MAR-07 04-APR-07 316 0.018+/- 0.003 0.018 04-APR-07 11-APR-07 298 0.023+/- 0.004 0.011 11-APR-07 18-APR-07 312 0.024+/- 0.004 0.010 18-APR-07 25-APR-07 295 0.026+/- 0.004 0.008 25-APR-07 03-MAY-07 358 0.018+/- 0.003 0.018 03-MAY-07 09-MAY-07 271 0.017+/- 0.004 0.016 09-MAY-07 17-MAY-07 340 0.031+/- 0.004 0.006 17-MAY-07 23-MAY-07 252 0.028+/- 0.004 0.016 23-MAY-07 31-MAY-07 346 0.017+/- 0.003 0. 008 31-MAY-07 06-JUN-07 255 0.019+/- 0.004 0.012 06-JUN-07 13-JUN-07 301 0. 020+/- 0.004 0.016 13-JUN-07 20-JUN-07 300 0. 029+/- 0.004 0.018 20-JUN-07 27-JUN-07 296 0. 026+/- 0.004 0.019 27-JUN-07 03-JUL-07 264 0.016+/- 0.004 0.032 03-JUL-07 11-JUL-07 341 0. 029+/- 0.004 0.014 11-JUL-07 18-JUL-07 287 0. 029+/- 0.004 0.014 18-JUL-07 25-JUL-07 301 0. 023+/- 0.004 0.017 25-JUL-07 01-AUG-07 301 0.033+/- 0.004 0.011 01-AUG-07 07-AUG-07 256 0. 044+/- 0.005 0.021 07-AUG-07 15-AUG-07 343 0.041+/- 0.004 0.012 15-AUG-07 22-AUG-07 303 0.041+/- 0.004 0.013 22-AUG-07 29-AUG-07 298 0.030+/- 0.004 0.014 29-AUG-07 06-SEP-07 355 0.038+/- 0.004 0.018 06-SEP-07 12-SEP-07 264 0.033+/- 0.004 0.021 12-SEP-07 19-SEP-07 298 0.033+/- 0.004 0.015 19-SEP-07 26-SEP-07 300 0.044+/- 0.004 0.014 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 11

Air Particulate and Charcoal Filters Location: 049 Gross Beta Collection Collection Volume* Concentration Concentration C Duplicate:

~StartDate Enid Date M3 . p* lni3) Analysis 26-SEP-07 03-OCT-07 308 0.049+/- 0.005 0.016 03-OCT-07 10-OCT-07 300 0.025+/- 0.004 K 0.018 10-OCT-07 19-OCT-07 379 0.023+/- 0.003 K 0.015 19-OCT-07 24-OCT-07 224 0.027+/- 0.004 K 0.014 24-OCT-07 31-OCT-07 294 0.030+/- 0.004 K 0.013 31-OCT-07 07-NOV-07 304 0.026+/- 0.004 K 0.011 07-NOV-07 14-NOV-07 294 0.043+/- 0.005 K 0.012 14-NOV-07 20-NOV-07 264 0.032+/- 0.004 K 0.012 20-NOV-07 28-NOV-07 356 0.037+/- 0.004 K 0.009 28-NOV-07 05-DEC-07 306 0.040+/- 0.004 K 0.011 05-DEC-07 12-DEC-07 303 0. 062+/- 0.005 K 0.018 12-DEC-07 20-DEC-07 349 0.058+/- 0.005 K 0.014 20-DEC-07 27-DEC-07 306 0.046+/- 0.005 K 0.020 27-DEC-07 03-JAN-08 310 0.041+/- 0.004 K 0.019 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 12

Quarterly Air Particulate - Gamma Location: 002 28-MAR-07 Nuclide . _ Concentratiin (pCi/r)

BE-7 .103+/- 0.015 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JUL-07 Nucide- Conc~entration (pCiini3)

BE-7 .098+/- 0.020 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-OCT-07 Nuclide ConcentrationilpCi/W3..

BE-7 .097+/- 0.013 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JAN-08 Nuclide7~ 3

.in-centration (Pcilm BE-7 .071+/- 0.014 CO-58 < 0.001 Co -60 < 0.001 CS -134 < 0.001 CS -137 < 0.001 FE -59 < 0.002

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 13

Quarterly Air Particulate - Gamma Location: 002 03-JAN-08 ZN-65 < 0.001 ZR-NB-95 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 14

Quarterly Air Particulate - Gamma Location: 018 28-MAR-07 Nuclide Cnetaion (pCin-

-78 .08+6+/- 0.013 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JUL-07 Nu clide'

Con66entration (C/ 3 iE-?T .088+/- 0.015 CO-58

0.001 CO-60

0.001 CS-134

0.001 CS-137

0.001 FE-59

0.001 MN-54

0.001 ZN-65

0.001 ZR-NB-95

0.001 03-OCT-07 Nuclide Cone ntra-tlon (PCinim3) 4,

.1 +!- 0.013 BE-7 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JAN-08 BE-7 .06+/- 0.010 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 15

Quarterly Air Particulate - Gamma Location: 018 03-JAN-08 N~uclide Concentration fpeilm3 MN-54 < 0. 001 ZN-65 < 0.001 ZR-NB-95 < 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 16

Quarterly Air Particulate - Gamma Location: 032 28-MAR-07 Nuclide Concentration (pCii')

C BE-7 .076+!- 0.015 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.002 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JUL-07 Nuclider, ,, Concentration(pCiim3) ]

BE-7 .107+!- 0.018 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-OCT-07 Nudide Concentration (pCh6Im)

BE-7 .1+/- 0.015 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JAN-08 Nuclide Concen'traiton (priln31 BE-70.012 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 17

Quarterly Air Particulate - Gamma Location: 032 03-JAN-08 Nuclide Concentration (pCim 3 )

MN-54< 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 18

Quarterly Air Particulate - Gamma Location: 037 28-MAR-07 Nucide Concentration (pCinim3)

BE-7 .114+/- 0.019 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JUL-07 ____ ________

Nuclide ConcentratiOn (pCi/m3)

BE-7 .094+/- 0.018 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-OCT-07 Concentration (pCiin 3 )

BE-?7 .1+!- 0.014 CO-58

0.001 CO-60

0.001 CS-134

0.001 CS-137

0.001 FE-59

0.001 MN-54

0.001 ZN-65

0.001 ZR-NB-95

0.001 03-JAN-08 Nuclide do-nctntration (p im).

BE-7 .089+/- 0.015 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 19

Quarterly Air Particulate - Gamma Location: 037 03-JAN-08

'Nulide" Concentration (pniým MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 20

Quarterly Air Particulate - Gamma Location: 048 28-MAR-07 NuclideConcenitration (PCi/m3) 7 BE-7 .092+/- 0. 013 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.002 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JUL-07 Nuchde .. Concentrati ioiý (Iý iiY 7 BE-7 .084+!- 0.014 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB- 95 < 0.001 03-OCT-07 Nu*idhe Concentration (pCinim *)

BE-7 .106+/- 0.014 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JAN-08 Nuclide .- , Concentratih (pCi/m3)l BE-7 .067+/- 0.012 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 21

Quarterly Air Particulate - Gamma Location: 048 03-JAN-08

-Conc-nraiio n (pC urn-)

MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95

0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 22

Quarterly Air Particulate - Gamma Location: 049 28-MAR-07 Nuclide:~7 Concentration fpCYWm)

BE-7 .079+!- 0.017 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JUL-07

Co n.cei i(yii

.ration..lnm..

BE- 7 .082+/- 0.015 CO-58

0.001 CO-60

0.001 CS-134

0.001 CS-137

0.001 FE-59

0.001 MN-54

0.001 ZN-65

0.001 ZR-NB-95

0.001 03-OCT-07 Nu ilde Concentratio*npCi/m35)

BE-7 .1+/- 0.011 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 MN-54 < 0.001 ZN-65 < 0.001 ZR-NB-95 < 0.001 03-JAN-08 Conenrati on~i(pdGi/*n-P)!

hBE-7-T .088+/- 0.016 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 23

Quarterly Air Particulate - Gamma Location: 049 03-JAN-08

-Concentrationi (dCi/m 3 )_*

MN-54 < 0.001 ZN-65

0.001 ZR-NB-95

0.001

Duplicate Analysis 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 24

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & Hl-3~ 7<~j Collection ~ Nuclide e; Concentration Dulct Date. ~ (pCi/Liter) Analysis 11-JAN-07 MN-54 2.800 11-JAN-07 CO-58 2.000 11-JAN-07 FE-59 5.700 11-JAN-07 CO-60 2.500 11-JAN-07 ZN-65 6.700 11-JAN-07 ZR-NB-95 2.000 11-JAN-07 1-131 5.800 11-JAN-07 CS-134 3.000 11-JAN-07 CS-137 2.700 11-JAN-07 BA-LA-140 2.100 11-JAN-07 H-3 147.000 23-FEB-07 MN-54 2.200 23-FEB-07 CO-58 2.300 23-FEB-07 FE-59 3.900 23-FEB-07 CO-60 1.300 23-FEB-07 ZN-65 4. 900 23-FEB-07 ZR-NB-95 2.900 23-FEB-07 1-131 4.400 23-FEB-07 CS-134 1.800 23-FEB-07 CS-137 3.100 23-FEB-07 BA-LA-140 2.400 23-FEB-07 H-3 188.000 08-MAR-07 MN-54 2.200 08-MAR-07 CO-58 2.500 08-MAR-07 FE-59 5.400 08-MAR-07 CO-60 3.700 08-MAR-07 ZN-65 6. 500 08-MAR-07 ZR-NB-95 2.700 08-MAR-07 1-131 3.400 08-MAR-07 CS-134 3.700 08-MAR-07 CS-137 4. 600 08-MAR-07 BA-LA-140 2.200 08-MAR-07 H-3 180.000 12-APR-07 MN-54 2.200 Duplicate 12-APR-07 MN-54 1.300 12-APR-07 CO-58 2. 600 Duplicate 12-APR-07 CO-58 3. 100 12-APR-07 FE-59 6.000 Duplicate 12-APR-07 FE-59 2.200 12-APR-07 CO-60 2. 600 Duplicate 12-APR-07 CO-60 1.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 25

Exposure Pathway - Waterborne Surface Water Location JRR 12-APR-07 ZN-65 3.500 Duplicate 12-APR-07 ZN-65 3.800 12-APR-07 ZR-NB-95 4.000 Duplicate 12-APR-07 ZR-NB-95 2.400 12-APR-07 1-131 8.200 Duplicate 12-APR-07 1-131 3.700 12-APR-07 CS-134 3.200 Duplicate 12-APR-07 CS-134 2.400 12-APR-07 CS-137 3.100 Duplicate 12-APR-07 CS-137 3.200 12-APR-07 BA-LA-140 3.100 Duplicate 12-APR-07 BA-LA-140 4 .000 12-APR-07 H-3 167.000 Duplicate 12-APR-07 H-3 167.000 10-MAY-07 MN-54 3.900 10-MAY-07 CO-58 4.200 10-MAY-07 FE-59 4.600 10-MAY-07 CO-60 1.800 10-MAY-07 ZN-65 5.500 10-MAY-07 ZR-NB-95 2.700 10-MAY-07 1-131 7.200 10-MAY-07 CS-134 3. 900 10-MAY-07 CS-137 2.800 10-MAY-07 BA-LA-140 3.400 10-MAY-07 H-3 180.000 14-JUN-07 MN-54 1.700 14-JUN-07 CO-58 3.100 14-JUN-07 FE-59 6.200 14-JUN-07 CO-60 2.600 14-JUN-07 ZN-65 3.200 14-JUN-07 ZR-NB-95 3.900 14-JUN-07 1-131 4.800 14-JUN-07 CS-134 3.200 14-JUN-07 CS-137 3.100 14-JUN-07 BA-LA-140 2.800 14-JUN-07 H-3 169.000 18-JUL-07 MN-54 5.500 18-JUL-07 CO-58 3.500 18-JUL-07 FE-59 9.300 18-JUL-07 CO-60 2.900 18-JUL-07 ZN-65 13.200 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 26

Exposure Pathway - Waterborne Surface Water Location JRR

>Collection Nuclidle Concentration Duplicate 4Date (pi/iPr Anialysis 18-JUL-07 ZR-NB-95 4. 600 18-JUL-07 1-131 9.400 18-JUL-07 CS-134 5.800 18-JUL-07 CS-137 4.000 18-JUL-07 BA-LA-140 5.400 18-JUL-07 H-3 148.000 09-AUG-07 MN-54 2.400 09-AUG-07 CO-58 4. 500 09-AUG-07 FE-59 5.500 09-AUG-07 CO-60 1.500 09-AUG-07 ZN-65 3.300 09-AUG-07 ZR-NB- 95 3.500 09-AUG-07 1-131 3.100 09-AUG-07 CS-134 3.300 09-AUG-07 CS-137 3.700 09-AUG-07 BA-LA-140 1. 900 09-AUG-07 H-3 156.000 13-SEP-07 MN-54 3.600 13-SEP-07 CO-58 4.100 13-SEP-07 FE-59 10.400 13-SEP-07 CO-60 3.100 13-SEP-07 ZN-G65 7.200 13-SEP-07 ZR-NB- 95 2.300 13-SEP-07 1-131 9.300 13-SEP-07 CS-134 3. 900 13-SEP-07 CS-137 4.400 13-SEP-07 BA-LA-140 6.500 13-SEP-07 H-3 193.000 11-OCT-07 MN-54 2.500 11-OCT-07 CO-58 1.900 11-OCT-07 FE-59 5.800 11-OCT-07 CO-60 3.200 11-OCT-07 ZN-65 4.200 11-OCT-07 ZR-NB-95 3. 900 11-OCT-07 1-131 7. 600 11-OCT-07 CS-134 2.700 11-OCT-07 CS-137 4.400 11-OCT-07 BA-LA-140 4 .300 11-OCT-07 H-3 148.000 08-NOV-07 MN-54 3.600 08-NOV-07 CO-58 3.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 27

Exposure Pathway - Waterborne Surface Water Location JRR 08-NOV-07 FE-59 8.800 08-NOv-07 CO-60 4 .100 08-NOV-07 ZN-65 6.500 08-NOV-07 ZR-NB-95 4.500 08-NOV-07 1-131 9.500 08-NOV-07 CS-134 4.800 08-NOV-07 CS-137 7.200 08-NOV-07 BA-LA-140 6. 900 08-NOV-07 H-3 176.000 13-DEC-07 MN-54 1.700 13-DEC-07 CO-58 2.600 13-DEC-07 FE-59 2.800 13-DEC-07 CO-60 2. 600 13-DEC-07 ZN-65 6.100 13-DEC-07 ZR-NB-95 1.700 13-DEC-07 1-131 5.400 13-DEC-07 CS-134 2.400 13-DEC-07 CS-137 2.200 13-DEC-07 BA-LA-140 1. 600 13-DEC-07 H-3 173.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 28

Exposure Pathway - Waterborne Surface Water Location SP 11-JAN-07 MN-54 < 2.000 11-JAN-07 CO-58 <

2.200 11-JAN-07 FE-59 < 5.100 11-JAN-07 CO-60 < 2. 900 11-JAN-07 ZN-65 < 1.800 11-JAN-07 ZR-NB-95 K 3.300 11-JAN-07 1-131 < 4.400 11-JAN-07 CS-134 K 2.000 11-JAN-07 CS-137 2. 900 11-JAN-07 BA-LA-140 2.700 11-JAN-07 H-3 12910. 000+/- 322.000 23-FEB-07 MN-54 K 1.800 23-FEB-07 CO-58 < 2. 900 23-FEB-07 FE-59 < 6.300 23-FEB-07 CO-60 K 2.500 23-FEB-07 ZN-65 K 3.900 23-FEB-07 ZR-NB-95 K 3.400 23-FEB-07 1-131 < 4.200 23-FEB-07 CS-134 K 2. 600 23-FEB-07 CS-137 3.300 23-FEB-07 BA-LA-140 2.400 23-FEB-07 H-3 11985. 000+/- 306.000 08-MAR-07 MN-54 K 1.700 08-MAR-07 CO-58 K 3.100 08-MAR-07 FE-59 K 4.200 08-MAR-07 CO-60 < 1. 600 08-MAR-07 ZN-65 < 4.000 08-MAR-07 ZR-NB-95 < 2.800 08-MAR-07 1-131 K 6.200 08-MAR-07 CS-134 K 2.100 08-MAR-07 CS-137 3.500 08-MAR-07 BA-LA-140 3.500 08-MAR-07 H-3 12181. 000+/- 311.000 12-APR-07 MN-54 < 2.700 12-APR-07 CO-58 7.200 12-APR-07 FE- 59 4 . 900 12-APR-07 CO-60 4. 900 12-APR-07 ZN-65 11. 600 12-APR-07 ZR-NB-95 5.000 12-APR-07 1-131 8.100 12-APR-07 CS-134 5.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 29

Exposure Pathway - Waterborne Surface Water Location SP 12-APR-07 CS-137 3.700 12-APR-07 BA-LA-140 4.500 12-APR-07 H-3 11391. 000+/- 309.000 10-MAY-07 MN-54 < 2.500 10-MAY-07 CO-58 < 2.200 10-MAY-07 FE-59 < 4.400 10-MAY-07 CO-60 K 2.300 10-MAY-07 ZN-65 K 6.300 10-MAY-07 ZR-NB-95 K 3.300 10-MAY-07 1-131 K 5.400 10-MAY-07 CS-134 2.800 10-MAY-07 CS-137 3.100 10-MAY-07 BA-LA-140 4 .200 10-MAY-07 H-3 98 99 .000+/

280.000 14-JUN-07 MN-54 < 2.300 14-JUN-07 CO-58 < 2.400 14-JUN-07 FE-59 5.700 K

14-JUN-07 CO-60 3.000 K

14-JUN-07 ZN-65 2.000 K

14-JUN-07 ZR-NB-95 3.100 K

14-JUN-07 1-131 7.000 K

14-JUN-07 CS-134 3. 600 14-JUN-07 CS-137 2.200 14-JUN-07 BA-LA-140 1.900 14-JUN-07 H-3 9572. 000+/- 287.000 18-JUL-07 MN-54 K 3.800 18-JUL-07 CO-58 < 2. 300 18-JUL-07 FE-59 < 3.500 18-JUL-07 CO-60 < 3.300 18-JUL-07 ZN-65 K 5.700 18-JUL-07 ZR-NB-95 < 2.700 18-JUL-07 1-131 K 6.400 18-JUL-07 CS-134 < 3.000 18-JUL-07 CS-137 2.700 18-JUL-07 BA-LA-140 3. 900 18-JUL-07 H-3 8262. 000+-

263.000 09-AUG-07 MN-54 < 1.600 09-AUG-07 CO-58 2.900 09-AUG-07 FE-59 5.200 09-AUG-07 CO-60 2.600 09-AUG-07 ZN-65 3.100 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 30

Exposure Pathway - Waterborne Surface Water Location SP Gmmna Spectrum & H-3 Collection' Nuclide Con'centfration Duplicate Date * 'J(pCilLiter)i >Analysis 09-AUG-07 ZR-NB-95 8.200 09-AUG-07 1-131 5.400 09-AUG-07 CS-134 2.900 09-AUG-07 CS-137 2.700 09-AUG-07 BA-LA-140 < 4. 600 09-AUG-07 H-3 8875.000+!- 281.000 13-SEP-07 MN-54 <

3.900 13-SEP-07 CO-58 < 5.200 13-SEP-07 FE-59 K 6.500 13-SEP-07 K CO-60 3.800 13-SEP-07 ZN-65 <

8. 500 13-SEP-07 ZR-NB-95 < 5.000 13-SEP-07 1-131 <

10.000 13-SEP-07 CS-134 <

4 .400 13-SEP-07 CS-137 <

4.800 13-SEP-07 BA-LA-140 < 7.000 13-SEP-07 H-3 8265. 000+/ 263.000 11-OCT-07 MN-54 K 1.300 11-OCT-07 CO-58 1.400 11-OCT-07 FE-59 3.600 11-OCT-07 CO-60 2. 500 11-OCT-07 ZN-65 3.000 11-OCT-07 ZR-NB-95 2. 600 11-OCT-07 1-131 5.100 11-OCT-07 CS-134 3.000 11-OCT-07 CS-137 2.800 11-OCT-07 BA-LA-140 2.300 11-OCT-07 H-3 10063.000+/- 284.000 08-NOV-07 MN-54 < 3. 300 08-NOV-07 CO-58 2.200 08-NOV-07 FE-59 5.800 08-NOV-07 CO-60 3.400 08-NOV-07 ZN-65 9.400 08-NOV-07 ZR-NB-95 4.800 08-NOV-07 1-131 6. 600 08-NOV-07 CS-134 5.400 08-NOV-07 CS-137 3. 600 08-NOV-07 BA-LA-140 1 8.000 08-NOV-07 H-3 10423.000+/- 286.000 13-DEC-07 MN-54 1. 500 13-DEC-07 CO-58 2.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 31

Exposure Pathway - Waterborne Surface Water Location SP 13-DEC-07 FE-59 < 4.600 13-DEC-07 CO-60 < 1.900 13-DEC-07 ZN-65 < 3.200 13-DEC-07 ZR-NB-95 < 2.700 13-DEC-07 1-131 < 7.800 13-DEC-07 CS-134 < 3.800 13-DEC-07 CS-137 < 4.200 13-DEC-07 BA-LA-140 < 2.600 13-DEC-07 H-3 11474.000+/- 316.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 32

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide~ Concentration Date~ 17pCi/LiterK.

16-FEB-07 MN-54 < 2.600 16-FEB-07 CO-58 < 4 .500 16-FEB-07 FE-59 < 9.800 16-FEB-07 CO-60 < 4.900 16-FEB-07 ZN-65 < 10.400 16-FEB-07 ZR-NB-95 < 4 .700 16-FEB-07 CS-134 < 5.200 16-FEB-07 CS-137 < 4.900 16-FEB-07 BA-LA-140 < 3.200 16-FEB-07 H-3 < 135.000 16-FEB-07 1-131 (CHEM) < 0.433 18-MAY-07 MN-54 < 2.000 18-MAY-07 CO-58 < 3.600 18-MAY-07 FE-59 < 4.800 18-MAY-07 CO-60 < 1.900 18-MAY-07 ZN-65 < 3.200 18-MAY-07 ZR-NB-95 < 4.600 18-MAY-07 CS-134 < 3.000 18-MAY-07 CS-137 < 3.400 18-MAY-07 BA-LA-140 < 3.100 18-MAY-07 H-3 < 140.000 18-MAY-07 1-131 (CHEM) < 0.293 09-AUG-07 MN-54 < 5.400 09-AUG-07 CO-58 < 5.900 09-AUG-07 FE-59 < 6.000 09-AUG-07 CO-60 < 3.000 09-AUG-07 ZN-65 < 11.000 09-AUG-07 ZR-NB-95 < 5.300 09-AUG-07 CS-134 < 4.700 09-AUG-07 CS-137 < 6.600 09-AUG-07 BA-LA-140 < 8.700 09-AUG-07 H-3 < 156.000 09-AUG-07 1-131 (CHEM) < 0.375 15-NOV-07 MN-54 < 3.900 15-NOV-07 CO-58 < 3.200 15-NOV-07 FE-59 < 4.200 15-NOV-07 CO-60 < 2.800 15-NOV-07 ZN-65 < 5.300 15-NOV-07 ZR-NB-95 < 4.400 15-NOV-07 CS-134 < 3.300 15-NOV-07 CS-137 < 3.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 33

Exposure Pathway - Waterborne Ground Water Location B-12 15-NOV-07 BA-LA-140 < 4.000 15-NOV-07 H-3 < 178.000 15-NOV-07 1-131 (CHEM) < 0.372 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 34

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date 23-FEB-07 MN-54 < 4.500 23-FEB-07 CO-58 < 3.600 23-FEB-07 FE-59 < 8.600 23-FEB-07 CO-60 < 4.900 23-FEB-07 ZN-65 < 5.200 23-FEB-07 ZR-NB-95 < 3.500 23-FEB-07 CS-134 < 5.600 23-FEB-07 CS-137 < 5.700 23-FEB-07 BA-LA-140 < 2.600 23-FEB-07 H-3 < 18 8.000 23-FEB-07 1-131 (CHEM) < 0.305 18-MAY-07 MN-54 < 2.200 18-MAY-07 CO-58 < 3.200 18-MAY-07 FE-59 < 2.300 18-MAY-07 CO-60 < 3.200 18-MAY-07 ZN-65 < 1.800 18-MAY-07 ZR-NB-95 < 2.000 18-MAY-07 CS-134 < 2.500 18-MAY-07 CS-137 < 2.000 18-MAY-07 BA-LA-140 < 1.600 18-MAY-07 H-3 < 14 0.000 18-MAY-07 1-131 (CHEM) < 0.293 09-AUG-07 MN-54 < 2.200 09-AUG-07 CO-58 < 6.200 09-AUG-07 FE-59 < 3.300 09-AUG-07 CO-60 < 3.400 09-AUG-07 ZN-65 < 6.900 09-AUG-07 ZR-NB-95 < 5.800 09-AUG-07 CS-134 < 3.100 09-AUG-07 CS-137 < 4 .200 09-AUG-07 BA-LA-140 < 7.200 09-AUG-07 H-3 < 15 6.000 09-AUG-07 1-131 (CHEM) < 0.398 15-NOV-07 MN-54 < 2. 500 15-NOV-07 CO-58 < 1.100 15-NOV-07 FE-59 < 3.700 15-NOV-07 CO-60 < 2.500 15-NOV-07 ZN-65 < 2.400 15-NOV-07 ZR-NB-95 < 2.600 15-NOV-07 CS-134 < 2.400 15-NOV-07 CS-137 < 2.400 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 35

Exposure Pathway - Waterborne Ground Water Location C-10 15-NOV-07 BA-LA-140 < 2.400 15-NOV-07 H-3 < 178.000 15-NOV-07 1-131 (CHEM) < 0.388 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 36

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration

~DateŽ- " (p~i/iiter).

23-FEB-07 MN-54 < 4.900 23-FEB-07 CO-58 < 2.300 23-FEB-07 FE-59 < 6.400 23-FEB-07 CO-60 < 3.400 23-FEB-07 ZN-65 < 7.300 23-FEB-07 ZR-NB-95 < 5.900 23-FEB-07 CS-134 < 5.900 23-FEB-07 CS-137 < 6.000 23-FEB-07 BA-LA-140 < 6.700 23-FEB-07 H-3 < 188.000 23-FEB-07 1-131 (CHEM) < 0.303 18-MAY-07 MN-54 < 3.600 18-MAY-07 C0-58 < 3.600 18-MAY-07 FE-59 < 8.700 18-MAY-07 CO-60 < 3.000 18-MAY-07 ZN-65 < 4.900 18-MAY-07 ZR-NB-95 < 5.200 18-MAY-07 CS-134 < 5.400 18-MAY-07 CS-137 < 4.300 18-MAY-07 BA-LA-140 < 5.300 18-MAY-07 H-3 < 140.000 18-MAY-07 1-131 (CHEM) < 0.255 09-AUG-07 MN-54 < 4.300 09-AUG-07 CO-58 < 5.900 09-AUG-07 FE-59 < 3.900 09-AUG-07 CO-60 < 5.100 09-AUG-07 ZN-65 < 7.100 09-AUG-07 ZR-NB-95 < 5.600 09-AUG-07 CS-134 < 6.200 09-AUG-07 CS-137 < 4.800 09-AUG-07 BA-LA-140 < 7.200 09-AUG-07 H-3 < 156.000 09-AUG-07 1-131 (CHEM) < 0.445 15-NOV-07 MN-54 < 2.400 15-NOV-07 C0-58 < 1.700 15-NOV-07 FE-59 < 2.000 15-NOV-07 CO-60 < 2.500 15-NOV-07 ZN-65 < 4.400 15-NOV-07 ZR-NB-95 < 3.200 15-NOV-07 CS-134 < 2.300 15-NOV-07 CS-137 < 2.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 37

Exposure Pathway - Waterborne Ground Water Location C-49 15-NOV-07 BA-LA-140 < 3.600 15-NOV-07 H-3 < 178.000 15-NOV-07 1-131 (CHEM) < 0.448 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 38

Exposure Pathway - Waterborne Ground Water Location F-1 Collection Nuclide * .oncentration K Date (pCi/L~iter) 16-FEB-07 MN-54 < 3.100 16-FEB-07 CO-58 < 3.100 16-FEB-07 FE-59 < 7.300 16-FEB-07 CO-60 < 2.100 16-FEB-07 ZN-65 < 5.400 16-FEB-07 ZR-NB-95 < 3.600 16-FEB-07 CS-134 < 3.100 16-FEB-07 CS-137 < 2.800 16-FEB-07 BA-LA-140 < 2.400 16-FEB-07 H-3 < 135.000 16-FEB-07 1-131 (CHEM) < 0.342 18-MAY-07 MN-54 < 4.200 18-MAY-07 CO-58 < 3.200 18-MAY-07 FE-59 < 9.800 18-MAY-07 CO-60 < 2.900 18-MAY-07 ZN-65 < 4.700 18-MAY-07 ZR-NB-95 < 3.100 18-MAY-07 CS-134 < 4.900 18-MAY-07 CS-137 < 4.900 18-MAY-07 BA-LA-140 < 6.500 18-MAY-07 H-3 < 140.000 18-MAY-07 1-131 (CHEM) < 0.314 09-AUG-07 MN-54 < 2.300 09-AUG-07 CO-58 < 1.500 09-AUG-07 FE-59 < 4.000 09-AUG-07 CO-60 < 2.900 09-AUG-07 ZN-65 < 1.800 09-AUG-07 ZR-NB-95 < 1.700 09-AUG-07 CS-134 < 2.100 09-AUG-07 CS-137 < 2.900 09-AUG-07 BA-LA-140 < 1.700 09-AUG-07 H-3 < 156.000 09-AUG-07 1-131 (CHEM) < 0.268 15-NOV-07 MN-54 < 2.500 15-NOV-07 CO-58 < 6.400 15-NOV-07 FE-59 < 5.300 15-NOV-07 CO-60 < 4.900 15-NOV-07 ZN-65 < 6.500 15-NOV-07 ZR-NB-95 < 4.600 15-NOV-07 CS-134 < 4.500 15-NOV-07 CS-137 < 5.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 39

Exposure Pathway - Waterborne Ground Water Location F-1 15-NOV-07 BA-LA-140 < 9.200 15-NOV-07 H-3 < 178.000 15-NOV-07 1-131 (CHEM) < 0.390 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 40

Exposure Pathway - Waterborne Ground Water Location G-2 Collection - Nuclide ~.ConcentrationDulct

~ Date (piLtr AnalysSis 18-MAY-07 MN-54 2.800 18-MAY-07 C0-58 3.000 18-MAY-07 FE-59 5.200 18-MAY-07 CO-60 2.300 18-MAY-07 ZN-65 3.700 18-MAY-07 ZR-NB-95 2.800 18-MAY-07 CS-134 3.800 18-MAY-07 CS-137 2.300 18-MAY-07 BA-LA-140 3.200 18-MAY-07 H-3 140.000 18-MAY-07 1-131 (CHEM) 0.273 09-AUG-07 MN-54 2.200 09-AUG-07 C0-58 1. 600 09-AUG-07 FE-59 4.200 09-AUG-07 C0-60 3.000 09-AUG-07 ZN-65 4.700 09-AUG-07 ZR-NB-95 1. 800 09-AUG-07 CS-134 1.800 09-AUG-07 CS-137 2. 600 09-AUG-07 BA-LA-140 2.300 09-AUG-07 H-3 156.000 09-AUG-07 1-131 (CHEM) 0.372 15-NOV-07 MN-54 4 .700 15-NOV-07 C0-58 5.300 15-NOV-07 FE-59 6.400 15-NOV-07 CO-60 7.300 15-NOV-07 ZN-65 6.500 15-NOV-07 ZR-NB-95 5.000 15-NOV-07 CS-134 6.100 15-NOV-07 CS-137 3.300 15-NOV-07 BA-LA-140 7.500 15-NOV-07 H-3 178.000 15-NOV-07 1-131 (CHEM) 0.410 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 41

Exposure Pathway - Waterborne Ground Water Location J-1 Date (pCi/Liter)~

16-FEB-07 MN-54 < 1.800 16-FEB-07 CO-58 < 2.000 16-FEB-07 FE-59 < 4.000 16-FEB-07 CO-60 < 2.800 16-FEB-07 ZN-65 < 5.400 16-FEB-07 ZR-NB-95 < 2.500 16-FEB-07 CS-134 < 3.500 16-FEB-07 CS-137 < 4.100 16-FEB-07 BA-LA-140 < 4.700 16-FEB-07 H-3 < 135.000 16-FEB-07 1-131 (CHEM) < 0.345 17-MAY-07 MN-54 < 2.100 17-MAY-07 CO-58 < 3.900 17-MAY-07 FE-59 < 5.400 17-MAY-07 CO-60 < 3.100 17-MAY-07 ZN-65 < 6.000 17-MAY-07 ZR-NB-95 < 3.500 17-MAY-07 CS-134 < 2.800 17-MAY-07 CS-137 < 3.700 17-MAY-07 BA-LA-140 < 3.000 17-MAY-07 H-3 < 140.000 17-MAY-07 1-131 (CHEM) < 0.331 07-AUG-07 MN-54 < 4.300 07-AUG-07 CO-58 < 3.600 07-AUG-07 FE-59 < 7.000 07-AUG-07 CO-60 < 1.700 07-AUG-07 ZN-65 < 7.600 07-AUG-07 ZR-NB-95 < 2.100 07-AUG-07 CS-134 < 3.900 07-AUG-07 CS-137 < 3.700 07-AUG-07 BA-LA-140 < 2.700 07-AUG-07 H-3 < 156.000 07-AUG-07 1-131 (CHEM) < 0.413 14-NOV-07 MN-54 < 3.000 14-NOV-07 CO-58 < 2.400 14-NOV-07 FE-59 < 3.600 14-NOV-07 CO-60 < 2.800 14-NOV-07 ZN-65 < 6.200 14-NOV-07 ZR-NB-95 < 4.300 14-NOV-07 CS-134 < 3.700 14-NOV-07 CS-137 < 2.100 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 42

Exposure Pathway - Waterborne Ground Water Location J-1 14-NOV-07 BA-LA-140 < 4.700 14-NOV-07 H-3 < 178.000 14-NOV-07 1-131 (CHEM) < 0.404 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 43

Exposure Pathway - Waterborne Ground Water Location J-2 Collection ~ Nuclide Concentration ~ Duplicater, Date ;(pCiiLiter) Analysis 16-FEB-07 MN-54 < 2.400 Duplicate 16-FEB-07 MN-54 < 2.900 16-FEB-07 CO-58 < 2.800 Duplicate 16-FEB-07 CO-58 < 2.800 16-FEB-07 FE-59 < 3.400 Duplicate 16-FEB-07 FE-59 < 4.500 16-FEB-07 CO-60 < 2.800 Duplicate 16-FEB-07 CO-60 < 2.000 16-FEB-07 ZN-65 < 7.000 Duplicate 16-FEB-07 ZN-65 < 5.300 16-FEB-07 ZR-NB-95 < 3.800 Duplicate 16-FEB-07 ZR-NB-95 < 3.500 16-FEB-07 CS-134 < 4 .000 Duplicate 16-FEB-07 CS-134 < 2.200 16-FEB-07 CS-137 < 3.600 Duplicate 16-FEB-07 CS-137 < 3.600 16-FEB-07 BA-LA-140 < 1.800 Duplicate 16-FEB-07 BA-LA-140 < 3.100 16-FEB-07 H-3 < 135.000 Duplicate 16-FEB-07 H-3 < 135.000 16-FEB-07 1-131 (CHEM) < 0.585 Duplicate 16-FEB-07 1-131 (CHEM) < 0.483 18-MAY-07 MN-54 < 5.700 18-MAY-07 C0-58 < 4.400 18-MAY-07 FE-59 < 5.000 18-MAY-07 CO-60 < 4.500 18-MAY-07 ZN-65 < 9.100 18-MAY-07 ZR-NB-95 < 3.500 18-MAY-07 CS-134 < 6.000 18-MAY-07 CS-137 < 5.300 18-MAY-07 BA-LA-140 < 5.900 18-MAY-07 H-3 < 140.000 18-MAY-07 1-131 (CHEM) < 0.237 09-AUG-07 MN-54 < 4.400 09-AUG-07 CO-58 < 3.500 09-AUG-07 FE-59 < 6.000 09-AUG-07 CO-60 < 4.300 09-AUG-07 ZN-65 < 5.300 09-AUG-07 ZR-NB-95 < 3.500 09-AUG-07 CS-134 < 2.700 09-AUG-07 CS-137 < 6.400 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 44

Exposure Pathway - Waterborne Ground Water Location J-2 09-AUG-07 BA-LA-140 K 7.200 09-AUG-07 H-3 K 156. 000 09-AUG-07 1-131 (CHEM) K 0.364 15-NOV-07 MN-54 K 4.000 15-NOV-07 CO-58 K 2.300 15-NOV-07 FE-59 K 4.500 15-NOV-07 CO-60 K 2. 600 15-NOV-07 ZN-65 K 3.-500 15-NOV-07 ZR-NB-95 K 4.000 15-NOV-07 CS-134 K 3.900 15-NOV-07 CS-137 K 4.200 15-NOV-07 BA-LA-140 K 5.800 15-NOV-07 H-3 K 178.000 15-NOV-07 1-131 (CHEM) K 0.370 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 45

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide Concent ratio n Duplicate Dae(pCi/Liter) Arialysis 23-FEB-07 MN-54 < 4.700 23-FEB-07 CO-58 < 4.800 23-FEB-07 FE-59 < 7.700 23-FEB-07 CO-60 < 2.800 23-FEB-07 ZN-65 < 9.200 23-FEB-07 ZR-NB-95 < 4.700 23-FEB-07 CS-134 < 5.500 23-FEB-07 CS-137 < 5.300 23-FEB-07 BA-LA-140 < 2.900 23-FEB-07 H-3 < 188.000 23-FEB-07 1-131 (CHEM) < 0.353 18-MAY-07 MN-54 < 1.600 Duplicate 18-MAY-07 MN-54 < 2.400 18-MAY-07 CO-58 < 3.000 Duplicate 18-MAY-07 CO-58 < 3.100 18-MAY-07 FE-59 < 6.100 Duplicate 18-MAY-07 FE-59 < 8.900 18-MAY-07 CO-60 < 2.200 Duplicate 18-MAY-07 CO-60 < 2.800 18-MAY-07 ZN-65 < 4.400 Duplicate 18-MAY-07 ZN-65 < 5.400 18-MAY-07 ZR-NB-95 < 2.600 Duplicate 18-MAY-07 ZR-NB-95 < 2.700 18-MAY-07 CS-134 < 2.900 Duplicate 18-MAY-07 CS-134 < 4.000 18-MAY-07 CS-137 < 3.100 Duplicate 18-MAY-07 CS-137 < 4.600 18-MAY-07 BA-LA-140 < 2.700 Duplicate 18-MAY-07 BA-LA-140 < 6.300 18-MAY-07 H-3 < 140.000 Duplicate 18-MAY-07 H-3 < 140.000 18-MAY-07 1-131 (CHEM) < 0.390 Duplicate 18-MAY-07 1-131 (CHEM) < 0.479 09-AUG-07 MN-54 < 3.000 09-AUG-07 CO-58 < 1.800 09-AUG-07 FE-59 < 7.800 09-AUG-07 CO-60 < 2.100 09-AUG-07 ZN-65 < 2.500 09-AUG-07 ZR-NB-95 < 4.200 09-AUG-07 CS-134 < 3.200 09-AUG-07 CS-137 < 4.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 46

Exposure Pathway - Waterborne Ground Water Location L-49 09-AUG-07 BA-LA-140 4. 600 09-AUG-07 H-3 156. 000 09-AUG-07 1-131 (CHEM) 0.386 15-NOV-07 MN-54 3.500 15-NOV-07 CO-58 2. 600 15-NOV-07 FE-59 6.800 15-NOV-07 CO-60 1.300 15-NOV-07 ZN-65 4.400 15-NOV-07 ZR-NB-95 K 3. 000 15-NOV-07 CS-134 K 1.800 15-NOV-07 CS-137 K 1.800 15-NOV-07 BA-LA-140 K 1.900 15-NOV-07 H-3 K 178.000 15-NOV-07 1-131 (CHEM) K 0.412 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 47

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection i Concentration Date (p jlLiter 07-FEB-07 MN-54 < 2.300 07-FEB-07 CO-58 < 2.500 07-FEB-07 FE-59 < 2.200 07-FEB-07 CO-60 < 1.700 07-FEB-07 ZN-65 < 1.700 07-FEB-07 ZR-NB-95 < 1.600 07-FEB-07 CS-134 < 2.400 07-FEB-07 CS-137 < 2.500 07-FEB-07 BA-LA-140 < 2.400 07-FEB-07 GROSS BETA 2.943+/- 0. 696 07-FEB-07 1-131 (CHEM) < 0.445 07-MAR-07 MN-54 < 2.700 07-MAR-07 CO-58 < 2.600 07-MAR-07 FE-59 < 4.200 07-MAR-07 CO-60 < 3.400 07-MAR-07 ZN-65 < 5.500 07-MAR-07 ZR-NB-95 < 4.000 07-MAR-07 CS-134 < 2.500 07-MAR-07 CS-137 < 3.000 07-MAR-07 BA-LA-140 < 2.000 07-MAR-07 GROSS BETA 2.881+/- 0.662 07-MAR-07 1-131 (CHEM) < 0.397 04-APR-07 MN-54 < 2.300 04-APR-07 CO-58 < 1.200 04-APR-07 FE-59 < 5.000 04-APR-07 CO-60 < 2.000 04-APR-07 ZN-65 < 4.600 04-APR-07 ZR-NB-95 < 3.700 04-APR-07 CS-134 < 3.500 04-APR-07 CS-137 < 2.000 04-APR-07 BA-LA-140 < 1.700 04-APR-07 GROSS BETA 2.848t/- 0.393 04-APR-07 1-131 (CHEM) < 0.358 02-MAY-07 MN-54 < 2.200 02-MAY-07 CO-58 < 1.700 02-MAY-07 FE-59 < 2.500 02-MAY-07 CO-60 < 1.700 02-MAY-07 ZN-65 < 4.600 02-MAY-07 ZR-NB-95 < 3.100 02-MAY-07 CS-134 < 2.700 02-MAY-07 CS-137 < 3.700 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 48

Exposure Pathway - Waterborne Drinking Water Location BW-15 Colecio Nuclide -. ConcentrationDulct Date (pCilLiter) Anlyisat 02-MAY-07 BA-LA-140 < 2.900 02-MAY-07 GROSS BETA 2.659+/- 0.665 02-MAY-07 1-131 (CHEM) < 0.438 06-JUN-07 MN-54 < 3.500 06-JUN-07 CO-58 < 3.400 06-JUN-07 FE-59 < 6.800 06-JUN-07 CO-60 < 3.700 06-JUN-07 ZN-65 < 5.200 06-JUN-07 ZR-NB-95 < 3.600 06-JUN-07 CS-134 < 3.400 06-JUN-07 CS-137 < 3.100 06-JUN-07 BA-LA-140 < 2.800 06-JUN-07 GROSS BETA 3.107+/- 0.688 06-JUN-07 1-131 (CHEM) < 0.342 03-JUL-07 MN-54 < 2.200 03-JUL-07 CO-58 < 3.100 03-JUL-07 FE-59 < 3.500 03-JUL-07 CO-60 < 1.800 03-JUL-07 ZN-65 < 2.200 03-JUL-07 ZR-NB-95 < 4.100 03-JUL-07 CS-134 < 2.300 03-JUL-07 CS-137 < 3.400 03-JUL-07 BA-LA-140 < 1.400 03-JUL-07 GROSS BETA 2.956+/- 0.500 03-JUL-07 1-131 (CHEM) < 0.402 01-AUG-07 MN-54 < 2.700 01-AUG-07 CO-58 < 1.800 01-AUG-07 FE-59 < 4.200 01-AUG-07 CO-60 < 3.100 01-AUG-07 ZN-65 < 1.600 01-AUG-07 ZR-NB-95 < 1.800 01-AUG-07 CS-134 <- 3.300 01-AUG-07 CS-137 < 3.000 01-AUG-07 BA-LA-140 < 2.300 01-AUG-07 GROSS BETA 3.106+/- 1.051 01-AUG-07 1-131 (CHEM) < 0.216 06-SEP-07 MN-54 < 5.100 06-SEP-07 CO-58 < 4.500 06-SEP-07 FE-59 < 9.000 06-SEP-07 CO-60 < 2.800 06-SEP-07 ZN-65 < 4.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 49

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection CNncltrtio Duplicate (pCilLiter) j ~Analysis 06-S EP-07 ZR-NB-95 < 3.100 06-S EP-07 CS-134 < 4.100 06-S EP-07 CS-137 < 4.000 06-S EP-07 BA-LA-140 < 7.300 06-S .EP-07 GROSS BETA 2.355+/ 0. 634 06-S EP-07 1-131 (CHEM) < 0.460 03-0 )CT-07 MN-54 < 4 . 900 03-0 )CT-07 CO-58 < 4 .300 03-0 )CT-07 FE-59 < 6. 600 03-0 )CT-07 CO-60 < 3.800 03-C )CT-07 ZN-65 < 4.000 03-C CT-07 ZR-NB-95 < 4.200 03-C CT-07 CS-134 < 4.300 03-0 )CT-07 CS-137 < 2. 600 03-C )CT-07 BA-LA-140 < 6.800 03-C )CT-07 GROSS BETA 3.604+/- 0.725 03-C CT-07 1-131 (CHEM) < 0.220 01-N OV-07 MN-54 < 5.000 01-N OV-07 CO-58 < 3.700 01-N OV-07 FE-59 < 7.200 01-N [OV-07 CO-60 < 3.100 01-N OV-07 ZN-65 < 8.700 01-N OV-07 ZR-NB-95 < 3.600 01-N OV-07 CS-134 < 4. 600 01-N OV-07 CS-137 < 4.800 01-N OV-07 BA-LA-140 < 6.800 01-N OV-07 GROSS BETA 4.278+/- 0.773 01-N OV-07 1-131 (CHEM) < 0.357 05-D *EC-07 MN-54 < 2.300 05-D 'EC-07 CO-58 < 1. 900 05-D 'EC-07 FE-59 < 4 .100 05-D 'EC-07 CO-60 < 2.800 05-D 'EC-07 ZN-65 < 5.100 05-D *EC-07 ZR-NB-95 < 2.500 05-D 'EC-07 1-131 < 0.431 05-D 'EC-07 CS-134 < 2.400 05-C 'EC-07 CS-137 < 3.400 05-C EC-07 BA-LA-140 < 3. 900 05-D EC-07 GROSS BETA 2.798+/- 0.683 03-J AN-08 MN-54 < 2.200 03-J AN-08 CO-58 < 1.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 50

Exposure Pathway - Waterborne Drinking Water Location BW-15 03-JAN-08 FE-59 < 6.500 03-JAN-08 CO-60 < 3.100 03-JAN-08 ZN-65 < 4.500 03-JAN-08 ZR-NB-95 < 2.900 03-JAN-08 CS-134 < 3.200 03-JAN-08 CS-137 < 2.100 03-JAN-08 BA-LA-140 < 4.300 03-JAN-08 GROSS BETA 2.880+/- 0.657 03-JAN-08 1-131 (CHEM) < 0.451 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 51

Exposure Pathway - Waterborne Drinking Water Location 10-DW Collection~* Nuclide Concentration Date (pCi/Liter)4 07-FEB-07 MN-54 < 2.300 07-FEB-07 CO-58 < 2.200 07-FEB-07 FE-59 < 3.300 07-FEB-07 CO-60 < 1.600 07-FEB-07 ZN-65 < 3.600 07-FEB-07 ZR-NB-95 < 2.600 07-FEB-07 CS-134 < 2.900 07-FEB-07 CS-137 < 3.100 07-FEB-07 BA-LA-140 < 2.200 07-FEB-07 GROSS BETA 3.404+/- 0.756 07-FEB-07 1-131 (CHEM) < 0.471 07-MAR-07 MN-54 < 1.600 07-MAR-07 CO-58 < 3.100 07-MAR-07 FE-59 < 4.500 07-MAR-07 CO-60 < 1.400 07-MAR-07 ZN-65 < 3.700 07-MAR-07 ZR-NB-95 < 2.400 07-MAR-07 CS-134 < 2.900 07-MAR-07 CS-137 < 3.500 07-MAR-07 BA-LA-140 < 2.800 07-MAR-07 GROSS BETA 2.934+/- 0.673 07-MAR-07 1-131 (CHEM) < 0.433 04-APR-07 MN-54 < 3.100 04-APR-07 CO-58 < 2.500 04-APR-07 FE-59 < 4.300 04-APR-07 CO-60 < 1.200 04-APR-07 ZN-65 < 4.300 04-APR-07 ZR-NB-95 < 3.600 04-APR-07 CS-134 < 2.400 04-APR-07 CS-137 < 2.800 04-APR-07 BA-LA-140 < 3.500 04-APR-07 GROSS BETA 2.939+/- 0.399 04-APR-07 1-131 (CHEM) < 0.370 02-MAY-07 MN-54 < 2.300 02-MAY-07 CO-58 < 1.600 02-MAY-07 FE-59 < 6.000 02-MAY-07 CO-60 < 2.500 02-MAY-07 ZN-65 < 3.000 02-MAY-07 ZR-NB-95 < 3.200 02-MAY-07 CS-134 < 3.500 02-MAY-07 CS-137 < 2.600 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 52

Exposure Pathway - Waterborne Drinking Water Location 10-DW Collection Nuclide Concentration Date(pCilLiter)'

02-MAY-07 BA-LA-140 < 4.400 02-MAY-07 GROSS BETA 2.333+/- 0.626 02-MAY-07 1-131 (CHEM) < 0.437 06-JUN-07 MN-54 < 3.100 06-JUN-07 CO-58 < 3.100 06-JUN-07 FE-59 < 7.100 06-JUN-07 CO-60 < 3.500 06-JUN-07 ZN-65 < 2.000 06-JUN-07 ZR-NB-95 < 3.200 06-JUN-07 CS-134 < 3.500 06-JUN-07 CS-137 < 2.600 06-JUN-07 BA-LA-140 < 5.700 06-JUN-07 GROSS BETA 3.612+/- 0.747 06-JUN-07 1-131 (CHEM) < 0.368 03-JUL-07 MN-54 < 2.700 03-JUL-07 CO-58 < 1.600 03-JUL-07 FE-59 < 4.600 03-JUL-07 CO-60 < 2.500 03-JUL-07 ZN-65 < 5.500 03-JUL-07 ZR-NB-95 < 3.700 03-JUL-07 CS-134 < 3.200 03-JUL-07 CS-137 < 3.100 03-JUL-07 BA-LA-140 < 2.400 03-JUL-07 GROSS BETA 2.956+/- 0.525 03-JUL-07 1-131 (CHEM) < 0.407 01-AUG-07 MN-54 < 1.500 01-AUG-07 CO-58 < 3.000 01-AUG-07 FE-59 < 5.400 01-AUG-07 CO-60 < 2.200 01-AUG-07 ZN-65 < 2.600 01-AUG-07 ZR-NB-95 < 3.500 01-AUG-07 CS-134 < 3.200 01-AUG-07 CS-137 < 3.400 01-AUG-07 BA-LA-140 < 2.200 01-AUG-07 GROSS BETA 2.908+/- 0. 989 01-AUG-07 1-131 (CHEM) < 0.224 06-SEP-07 MN-54 < 2.600 06-SEP-07 CO-58 < 3.000 06-SEP-07 FE-59 < 3.800 06-SEP-07 CO-60 < 4.100 06-SEP-07 ZN-65 < 4.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 53

Exposure Pathway - Waterborne Drinking Water Location 10-DW ColcinNuclide ~ Concentration 06-SEP-07 ZR-NB-95 < 4.700 06-SEP-07 CS-134 < 4.100 06-SEP-07 CS-137 < 3.500 06-SEP-07 BA-LA-140 < 7.800 06-SEP-07 GROSS BETA 3.081+/- 0.703 06-SEP-07 1-131 (CHEM) < 0.632 03-OCT-07 MN-54 < 4.100 03-OCT-07 CO-58 < 3.000 03-OCT-07 FE-59 < 7.100 03-OCT-07 CO-60 < 4.500 03-OCT-07 ZN-65 < 4.000 03-OCT-07 ZR-NB-95 < 5.400 03-OCT-07 CS-134 < 3.300 03-OCT-07 CS-137 < 3.100 03-OCT-07 BA-LA-140 < 8.100 03-OCT-07 GROSS BETA 4.378+/- 0.791 03-OCT-07 1-131 (CHEM) < 0.277 01-NOV-07 MN-54 < 2.800 01-NOV-07 CO-58 < 3.100 01-NOV-07 FE-59 < 4.600 01-NOV-07 CO-60 < 4.300 01-NOV-07 ZN-65 < 3.600 01-NOV-07 ZR-NB-95 < 4.000 01-NOV-07 CS-134 < 2.400 01-NOV-07 CS-137 < 5.300 01-NOV-07 BA-LA-140 < 6.500 01-NOV-07 GROSS BETA 3.839+/- 0.765 01-NOV-07 1-131 (CHEM) < 0.450 05-DEC-07 MN-54 < 1.900 05-DEC-07 CO-58 < 1.800 05-DEC-07 FE-59 < 3.900 05-DEC-07 CO-60 < 1.100 05-DEC-07 ZN-65 < 4.000 05-DEC-07 ZR-NB-95 < 3.500 05-DEC-07 1-131 < 0.445 05-DEC-07 CS-134 < 2.600 05-DEC-07 CS-137 < 3.800 05-DEC-07 BA-LA-140 < 1.800 05-DEC-07 GROSS BETA 3.143+/- 0.696 03-JAN-08 MN-54 < 4.800 03-JAN-08 CO-58 < 4.500 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 54

Exposure Pathway - Waterborne Drinking Water Location IO-DW 03-JAN-08 FE-59 < 6.100 03-JAN-08 CO-60 < 2.600 03-JAN-08 ZN-65 < 6.000 03-JAN-08 ZR-NB-95 < 5.500 03-JAN-08 CS-134 < 3.400 03-JAN-08 CS-137 < 6.300 03-JAN-08 BA-LA-140 < 6.900 03-JAN-08 GROSS BETA 2.743+/- 0.676 03-JAN-08 1-131 (CHEM) < 0.302 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 55

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location BW-15 04-APR-07 H-3 < 186.000 04-APR-07 H-3 < 186.000 Duplicate 03-JUL-07 H-3 < 176.000 03-OCT-07 H-3 < 145.000 03-JAN-08 H-3 < 182.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 56

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location IO-DW 04-APR-07 H-3 < 186.000 03-JUL-07 H-3 < 176.000 03-OCT-07 H-3 < 187.000 03-JAN-08 H-3 < 182.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 57

Exposure Pathway - Waterborne Shoreline Sediment Location BBB 21-MAY-07 K-40 10851. 000 +/- 901.200 21-MAY-07 MN-54 35.700 2 1-MAY-07 CO-58 33.100 2 1-MAY-07 FE-59 59.200 2 1-MAY-07 CO-60 27.200 21-MAY-07 ZN-65 92 .700 21-MAY-07 CS-134 53.400 21-MAY-07 CS-137 31.200 30-OCT-07 K-40 12049.000+/- 646. 000 30-OCT-07 MN-54 22.400 30-OCT-07 CO-58 16.900 30-OCT-07 FE-59 67.500 30-OCT-07 CO-60 8.100 30-OCT-07 ZN-65 40.300 30-OCT-07 CS-134 23.100 30-OCT-07 CS-137 13.500 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 58

Exposure Pathway - Waterborne Shoreline Sediment Location DC 11-MAY-07 K-40 11059.000+!- 658.700 11-MAY-07 MN-54 29.200 11-MAY-07 CO-58 23.800 11-MAY-07 FE-59 66.500 11-MAY-07 CO-60 13.600 11-MAY-07 ZN-65 34.300 11-MAY-07 CS-134 15.000 11-MAY-07 CS-137 18.200 26-OCT-07 K-40 11518. 000+/- 666.600 26-OCT-07 MN-54 22.900 26-OCT-07 CO-58 30. 600 26-OCT-07 FE-59 64.600 26-OCT-07 CO-60 9.600 26-OCT-07 ZN-65 41.800 26-OCT-07 CS-134 19.700 26-OCT-07 CS-137 23.400 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 59

Exposure Pathway - Waterborne Shoreline Sediment Location JRR G~iam'aS pec~r umrn ~

Collec tion ,Nuclide~Vf 2 Concentration~ Duplicate~

Date (pCi/Kg Dry) ~ Analyjsis, 07-JUN-07 K-40 12087.000+/- 915.400 07-JUN-07 MN-54 26.600 07-JUN-07 CO-58 33. 100 07-JUN-07 FE-59 72.100 07-JUN-07 CO-60 29.300 07-JUN-07 ZN-65 61 .600 07-JUN-07 CS-134 46.900 07-JUN-07 CS-137 108 .200 +/- 43.300 09-NOV-07 K-40 11685. 000 +/- 632. 800 09-NOV-07 MN-54 24.400 09-NOV-07 CO-58 18. 900 09-NOV-07 FE-59 54. 600 09-NOV-07 CO-60 19.900 09-NOV-07 ZN-65 48.200 09-NOV-07 CS-134 19.300 09-NOV-07 CS-137 19.300 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 60

Exposure Pathway - Waterborne Shoreline Sediment Location SC 27-JUN-07 K-40 12250.000+/- 823.400 27-JUN-07 MN-54 < 35.500 27-JUN-07 CO-58 < 40.700 27-JUN-07 FE-59 < 93.400 27-JUN-07 CO-60 < 11.500 27-JUN-07 ZN-65 < 105.100 27-JUN-07 CS-134 < 53.500 27-JUN-07 CS-137 < 33.600 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 61

Exposure Pathway - Ingestion Fish Location CCL 11-MAY-07 COMMON CARP K-40 2741.800+/- 370.800 11-MAY-07 COMMON CARP MN-54 < 9.700 11-MAY-07 COMMON CARP CO-58 < 8.300 11-MAY-07 COMMON CARP FE-59 < 17.300 11-MAY-07 COMMON CARP CO-60 < 9.200 11-MAY-07 COMMON CARP ZN-65 < 39.000 11-MAY-07 COMMON CARP CS-134 < 11.200 11-MAY-07 COMMON CARP CS-137 < 12.300 11-MAY-07 COMMON CARP H-3 7266.000+/- 208.000 11-MAY-07 SMALLMOUTH BASS K-40 3428.800+/- 472.300 11-MAY-07 SMALLMOUTH BASS MN-54 < 15.900 11-MAY-07 SMALLMOUTH BASS CO-58 < 13.400 11-MAY-07 SMALLMOUTH BASS FE-59 < 27.500 11-MAY-07 SMALLMOUTH BASS CO-60 < 16.300 11-MAY-07 SMALLMOUTH BASS ZN-65 < 39.600 11-MAY-07 SMALLMOUTH BASS CS-134 < 22.100 11-MAY-07 SMALLMOUTH BASS CS-137 < 22.000 11-MAY-07 SMALLMOUTH BASS H-3 6022.000+/- 193.000 11-MAY-07 SMALLMOUTH BUFFALO K-40 2759.600+/- 416.100 11-MAY-07 SMALLMOUTH BUFFALO MN-54 < 13.100 11-MAY-07 SMALLMOUTH BUFFALO CO-58 < 12.200 11-MAY-07 SMALLMOUTH BUFFALO FE-59 < 24.200 11-MAY-07 SMALLMOUTH BUFFALO CO-60 < 15.000 11-MAY-07 SMALLMOUTH BUFFALO ZN-65 < 26.300 11-MAY-07 SMALLMOUTH BUFFALO CS-134 < 17.700 11-MAY-07 SMALLMOUTH BUFFALO CS-137 < 11.300 11-MAY-07 SMALLMOUTH BUFFALO H-3 5505.000+/- 178.000 11-MAY-07 WHITE BASS K-40 3286.500+/- 474.000 11-MAY-07 WHITE BASS MN-54 < 20.000 11-MAY-07 WHITE BASS CO-58 < 8.600 11-MAY-07 WHITE BASS FE-59 < 21.800 11-MAY-07 WHITE BASS CO-60 < 15.000 11-MAY-07 WHITE BASS ZN-65 < 20.700 11-MAY-07 WHITE BASS CS-134 < 21.200 11-MAY-07 WHITE BASS CS-137 < 16.300 11-MAY-07 WHITE BASS H-3 5917.000+/- 206.000 19-OCT-07 SMALLMOUTH BUFFALO K-40 3027.700+/- 597.800 19-OCT-07 SMALLMOUTH BUFFALO MN-54 < 13.900 19-OCT-07 SMALLMOUTH BUFFALO CO-58 < 17.800 19-OCT-07 SMALLMOUTH BUFFALO FE-59 < 25.200 19-OCT-07 SMALLMOUTH BUFFALO CO-60 < 16.900 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 62

Exposure Pathway - Ingestion Fish Location CCL Gammba Spectrumi & H-3 p Collection, Sample Nucli~de Concentration 'Duplicate '>

Date' Description (pC~i/K~g Wet) Analysis 19-OCT-07 SMALLMOUTH BUFFALO ZN-65 < 31.200 19-OCT-07 SMALLMOUTH BUFFALO CS-134 < 15. 400 19-OCT-07 SMALLMOUTH BUFFALO CS-137 < 23.800 19-OCT-07 SMALLMOUTH BUFFALO H-3 6521.000+/- 209.000 19-OCT-07 WIPER K-40 3077.800+/- 521.700 19-OCT-07 WIPER MN-54 < 28.800 19-OCT-07 WIPER CO-58 < 11.400 19-OCT-07 WIPER FE-59 < 38.100 19-OCT-07 WIPER CO-60 < 20.100 19-OCT-07 WIPER ZN-65 < 20.300 19-OCT-07 WIPER CS-134 < 19.500 19-OCT-07 WIPER CS-137 < 15.700 19-OCT-07 WIPER H-3 6848.000+/- 214.000 24-OCT-07 CHANNEL CATFISH K-40 2868.500+/- 465.800 24-OCT-07 CHANNEL CATFISH MN-54 < 16. 600 24-OCT-07 CHANNEL CATFISH CO-58 < 8.500 24-OCT-07 CHANNEL CATFISH FE-59 < 30.600 24-OCT-07 CHANNEL CATFISH CO-60 < 9.200 24-OCT-07 CHANNEL CATFISH ZN-65 < 23.400 24-OCT-07 CHANNEL CATFISH CS-134 < 16.900 24-OCT-07 CHANNEL CATFISH CS-137 < 17.400 24-OCT-07 CHANNEL CATFISH H-3 7194.000+/- 228.000 24-OCT-07 COMMON CARP K-40 2539.300+/- 353.000 24-OCT-07 COMMON CARP MN-54 < 9.300 24-OCT-07 COMMON CARP CO-58 < 11.900 24-OCT-07 COMMON CARP FE-59 < 33.800 24-OCT-07 COMMON CARP CO-60 < 4.600 24-OCT-07 COMMON CARP ZN-65 < 21.400 24-OCT-07 COMMON CARP CS-134 < 7.400 24-OCT-07 COMMON CARP CS-137 < 8.200 24-OCT-07 COMMON CARP H-3 6756.000+/- 216.000 24-OCT-07 FLATHEAD CATFISH K-40 2302.900+/- 340.700 24-OCT-07 FLATHEAD CATFISH MN-54 < 9.400 24-OCT-07 FLATHEAD CATFISH CO-58 < 10.100 24-OCT-07 FLATHEAD CATFISH FE-59 < 19.200 24-OCT-07 FLATHEAD CATFISH CO-60 < 7.200 24-OCT-07 FLATHEAD CATFISH ZN-65 < 8.800 24-OCT-07 FLATHEAD CATFISH CS-134 < 8.400 24-OCT-07 FLATHEAD CATFISH CS-137 < 14.400 24-OCT-07 FLATHEAD CATFISH H-3 5788.000+/- 199.000 24-OCT-07 WALLEYE K-40 3158.900+/- 482.500 Duplicate 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 63

Exposure Pathway - Ingestion Fish Location CCL

'Gamma Spectrum & H-3

Collecti*n Sample Nuclide Concentration 'Duplicate 3/4 Date ;~, Description (pCiIKg Wet), Analysis~~

24-OCT-07 WALLEYE K-40 3134.300+/- 514.300 24-OCT-07 WALLEYE MN-54 K 20. 500 Duplicate 24-OCT-07 WALLEYE MN-54 < 15.900 24-OCT-07 WALLEYE CO-58 K 19.800 Duplicate 24-OCT-07 WALLEYE K CO-58 10.700 24-OCT-07 WALLEYE FE-59 K 32.000 Duplicate 24-OCT-07 WALLEYE FE-59 K 27.000 24-OCT-07 WALLEYE CO-60 K 18.500 Duplicate 24-OCT-07 WALLEYE CO-60 K

10. 500 24-OCT-07 WALLEYE ZN-65 < 49.000 Duplicate 24-OCT-07 WALLEYE ZN-65 K 26.100 24-OCT-07 WALLEYE CS-134 K 11.100 Duplicate 24-OCT-07 WALLEYE CS-134 K 8.300 24-OCT-07 WALLEYE CS-137 K 19.300 Duplicate 24-OCT-07 WALLEYE K CS-137 11.700 24-OCT-07 WALLEYE H-3 7235. 000+/-/- 223.000 Duplicate 24-OCT-07 WALLEYE H-3 6828. 000+/- 217.000 24-OCT-07 WHITE CRAPPIE K-40 2660. 500+/-

499.000 24-OCT-07 WHITE CRAPPIE MN-54 K 17.000 24-OCT-07 WHITE CRAPPIE CO-58 < 6.100 24-OCT-07 WHITE CRAPPIE FE-59 <

24.500 24-OCT-07 WHITE CRAPPIE CO-60 <

15.500 24-OCT-07 WHITE CRAPPIE ZN-65 K 27.300 24-OCT-07 WHITE CRAPPIE CS-134 <

13.000 24-OCT-07 WHITE CRAPPIE CS-137 K 15.100 24-OCT-07 WHITE CRAPPIE H-3 6582.000+!- 208.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 64

Exposure Pathway - Ingestion Fish Location JRR Gamma Spectrum & H-3 NulceConcentration. Duplicate (piKgWt A~nalysis -

01-JUN-07 CHANNEL CATFISH K-40 2997. 000+/- 381.300 01-JUN-07 CHANNEL CATFISH MN-54 < 14.800 01-JUN-07 CHANNEL CATFISH CO-58 K 12.600 01-JUN-07 CHANNEL CATFISH FE-59 K 26.400 01-JUN-07 CHANNEL CATFISH CO-60 K 15.200 01-JUN-07 CHANNEL CATFISH ZN-65 < 13.700 01-JUN-07 CHANNEL CATFISH CS-134 K 10.800 01-JUN-07 CHANNEL CATFISH CS-137 K 11.600 01-JUN-07 CHANNEL CATFISH H-3 K 140.000 01-JUN-07 COMMON CARP K-40 3681.500+!- 449.600 01-JUN-07 COMMON CARP MN-54 K 10.900 01-JUN-07 COMMON CARP CO-58 K 11.600 01-JUN-07 COMMON CARP FE-59 K 18.100 01-JUN-07 COMMON CARP CO-60 K 20.000 01-JUN-07 COMMON CARP ZN-65 K 17.800 01-JUN-07 COMMON CARP CS-134 K 9.800 01-JUN-07 COMMON CARP CS-137 < 12.500 01-JUN-07 COMMON CARP H-3 K 134.000 01-JUN-07 LARGEMOUTH BASS K-40 3511. 600+/-/- 536.000 01-JUN-07 LARGEMOUTH BASS MN-54 K 11.500 01-JUN-07 LARGEMOUTH BASS CO-58 K 12.600 01-JUN-07 LARGEMOUTH BASS FE-59 K 33.200 01-JUN-07 LARGEMOUTH BASS CO-60 K 24.000 01-JUN-07 LARGEMOUTH BASS ZN-65 K 24.000 01-JUN-07 LARGEMOUTH BASS CS-134 < 17.800 01-JUN-07 LARGEMOUTH BASS CS-137 < 15.900 01-JUN-07 LARGEMOUTH BASS H-3 < 140.000 09-NOV-07 CHANNEL CATFISH K-40 3077. 000+/- 459.900 09-NOV-07 CHANNEL CATFISH MN-54 K 18.100 09-NOV-07 CHANNEL CATFISH CO-58 < 22.000 09-NOV-07 CHANNEL CATFISH FE-59 K 60.800 09-NOV-07 CHANNEL CATFISH CO-60 K 16.200 09-NOV-07 CHANNEL CATFISH ZN-65 < 20.800 09-NOV-07 CHANNEL CATFISH CS-134 K 15.300 09-NOV-07 CHANNEL CATFISH CS-137 < 12.800 09-NOV-07 CHANNEL CATFISH H-3 K 132.000 09-NOV-07 COMMON CARP K-40 2889.000+/-!- 311.000 09-NOV-07 COMMON CARP MN-54 K 5. 600 09-NOV-07 COMMON CARP CO-58 K 12. 900 09-NOV-07 COMMON CARP FE-59 < 35.500 09-NOV-07 COMMON CARP CO-60 < 13.300 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 65

Exposure Pathway - Ingestion Fish Location JRR 09-NOV-07 COMMON CARP ZN-65 < 14.600 09-NOV-07 COMMON CARP CS-134 < 10.500 09-NOV-07 COMMON CARP CS-137 < 13.300 09-NOV-07 COMMON CARP H-3 < 153.000 09-NOV-07 SMALLMOUTH BUFFALO K-.40 2890.400+/- 319.300 09-NOV-07 SMALLMOUTH BUFFALO MN-54 < 11.600 09-NOV-07 SMALLMOUTH BUFFALO CO-58 < 18.300 09-NOV-07 SMALLMOUTH BUFFALO FE-59 < 29.900 09-NOV-07 SMALLMOUTH BUFFALO CO-60 < 7.400 09-NOV-07 SMALLMOUTH BUFFALO ZN-65 < 15.900 09-NOV-07 SMALLMOUTH BUFFALO CS-134 < 9.800 09-NOV-07 SMALLMOUTH BUFFALO CS-137 < 13.400 09-NOV-07 SMALLMOUTH BUFFALO H-3 < 129.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 66

Exposure Pathway - Ingestion Food/Garden Location C-2 11-JUL-07 HORSERADISH LEAVES BE-7 769.700 +/- 280.000 11-JUL-07 HORSERADISH LEAVES K-40 4825.600 +/- 559.000 11-JUL-07 HORSERADISH LEAVES MN-54 < 20.200 11-JUL-07 HORSERADISH LEAVES CO-58 < 15.000 11-JUL-07 HORSERADISH LEAVES FE-59 < 23.000 11-JUL-07 HORSERADISH LEAVES CO-60 < 28.500 11-JUL-07 HORSERADISH LEAVES ZN-65 < 22.400 11-JUL-07 HORSERADISH LEAVES ZR-NB-95 < 22.300 11-JUL-07 HORSERADISH LEAVES 1-131 < 24 .400 11-JUL-07 HORSERADISH LEAVES CS-134 < 14.200 11-JUL-07 HORSERADISH LEAVES CS-137 < 16.400 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 67

Exposure Pathway - Ingestion Food/Garden Location D-2 28-MAR-07 HORSERADISH LEAVES BE-7 752.800 +1- 434 .500 28-MAR-07 HORSERADISH LEAVES K-40 8653.100 +/- 958.200 28-MAR-07 HORSERADISH LEAVES MN-54 < 31.700 28-MAR-07 HORSERADISH LEAVES CO-58 < 32.000 28-MAR-07 HORSERADISH LEAVES FE-59 < 42. 900 28-MAR-07 HORSERADISH LEAVES CO-60 < 38.700 28-MAR-07 HORSERADISH LEAVES ZN-65 < 54.300 28-MAR-07 HORSERADISH LEAVES ZR-NB-95 < 46.100 28-MAR-07 HORSERADISH LEAVES 1-131 < 47.200 28-MAR-07 HORSERADISH LEAVES CS-134 < 40. 900 28-MAR-07 HORSERADISH LEAVES CS-137 < 33.500 25-APR-07 HORSERADISH LEAVES BE-7 < 200.200 25-APR-07 HORSERADISH LEAVES K-40 4595.700 +/- 428.400 25-APR-07 HORSERADISH LEAVES MN-54 < 16.200 25-APR-07 HORSERADISH LEAVES C0-58 < 14 .000 25-APR-07 HORSERADISH LEAVES FE-59 < 34.500 25-APR-07 HORSERADISH LEAVES CO-60 < 17.100 25-APR-07 HORSERADISH LEAVES ZN-65 < 33.100 25-APR-07 HORSERADISH LEAVES ZR-NB-95 < 15.400 25-APR-07 HORSERADISH LEAVES 1-131 < 33.800 25-APR-07 HORSERADISH LEAVES CS-134 < 15.100 25-APR-07 HORSERADISH LEAVES CS-137 < 11.000 17-MAY-07 HORSERADISH LEAVES BE-7 < 277. 900 17-MAY-07 HORSERADISH LEAVES K-40 3900.000 +/- 482.200 17-MAY-07 HORSERADISH LEAVES MN-54 < 12.700 17-MAY-07 HORSERADISH LEAVES CO-58 < 9.400 17-MAY-07 HORSERADISH LEAVES FE-59 < 16.800 17-MAY-07 HORSERADISH LEAVES C0-60 < 15.700 17-MAY-07 HORSERADISH LEAVES ZN-65 < 31.200 17-MAY-07 HORSERADISH LEAVES ZR-NB-95 < 16.800 17-MAY-07 HORSERADISH LEAVES 1-131 < 40.100 17-MAY-07 HORSERADISH LEAVES CS-134 < 16.000 17-MAY-07 HORSERADISH LEAVES CS-137 < 20.400 13-JUN-07 HORSERADISH LEAVES BE-7 973.800 +/- 252.800 13-JUN-07 HORSERADISH LEAVES K-40 5535.300 +/- 601.500 13-JUN-07 HORSERADISH LEAVES MN-54 < 19.200 13-JUN-07 HORSERADISH LEAVES C0-58 < 10.500 13-JUN-07 HORSERADISH LEAVES FE-59 < 22.600 13-JUN-07 HORSERADISH LEAVES CO-60 < 12.500 13-JUN-07 HORSERADISH LEAVES ZN-65 < 32.500 13-JUN-07 HORSERADISH LEAVES ZR-NB-95 < 20.300 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 68

Exposure Pathway - Ingestion Food/Garden Location D-2 13-JUN-07 HORSERADISH LEAVES 1-131 < 25.000 13-JUN-07 HORSERADISH LEAVES CS-134 < 16.500 13-JUN-07 HORSERADISH LEAVES CS-137 < 15.300 11-JUL-07 HORSERADISH LEAVES BE-7 < 192.400 11-JUL-07 HORSERADISH LEAVES K-40 4460.800 +/- 502.300 11-JUL-07 HORSERADISH LEAVES MN-54 < 17.400 11-JUL-07 HORSERADISH LEAVES CO-58 < 11.700 11-JUL-07 HORSERADISH LEAVES FE-59 < 29.100 11-JUL-07 HORSERADISH LEAVES CO-60 < 16.200 11-JUL-07 HORSERADISH LEAVES ZN-65 < 24 .900 11-JUL-07 HORSERADISH LEAVES ZR-NB-95 < 18.500 11-JUL-07 HORSERADISH LEAVES 1-131 < 24 .200 11-JUL-07 HORSERADISH LEAVES CS-134 < 15.500 11-JUL-07 HORSERADISH LEAVES CS-137 < 13.500 22-AUG-07 HORSERADISH LEAVES BE-7 472.300 +/- 209.600 22-AUG-07 HORSERADISH LEAVES K-40 6871.600 + /- 591.700 22-AUG-07 HORSERADISH LEAVES MN-54 < 19.500 22-AUG-07 HORSERADISH LEAVES CO-58 < 17.500 22-AUG-07 HORSERADISH LEAVES FE-59 < 20.100 22-AUG-07 HORSERADISH LEAVES CO-60 < 15.900 22-AUG-07 HORSERADISH LEAVES ZN-65 < 28.300 22-AUG-07 HORSERADISH LEAVES ZR-NB-95 < 16.100 22-AUG-07 HORSERADISH LEAVES 1-131 < 18.400 22-AUG-07 HORSERADISH LEAVES CS-134 < 12.300 22-AUG-07 HORSERADISH LEAVES CS-137 < 17.700 12-SEP-07 HORSERADISH LEAVES BE-7 932.200 +/- 240.400 12-SEP-07 HORSERADISH LEAVES K-40 6336.000 +/- 694.200 12-SEP-07 HORSERADISH LEAVES MN-54 < 25.800 12-SEP-07 HORSERADISH LEAVES CO-58 < 14.400 12-SEP-07 HORSERADISH LEAVES FE-59 < 30.200 12-SEP-07 HORSERADISH LEAVES CO-60 < 24.200 12-SEP-07 HORSERADISH LEAVES ZN-65 < 42.200 12-SEP-07 HORSERADISH LEAVES ZR-NB-95 < 21.900 12-SEP-07 HORSERADISH LEAVES 1-131 < 30.700 12-SEP-07 HORSERADISH LEAVES CS-134 < 18.600 12-SEP-07 HORSERADISH LEAVES CS-137 < 27.900 19-OCT-07 HORSERADISH LEAVES BE-7 755.800 +/- 171.100 19-OCT-07 HORSERADISH LEAVES K-40 5812.700 + 518.800 5-19-OCT-07 HORSERADISH LEAVES MN-54 < 16.400 19-OCT-07 HORSERADISH LEAVES CO-58 < 13.200 19-OCT-07 HORSERADISH LEAVES FE-59 < 20.200 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 69

Exposure Pathway - Ingestion Food/Garden Location D-2 19-OCT-07 HORSERADISH LEAVES CO-60 18.400 19-OCT-07 HORSERADISH LEAVES ZN-65 32.100 19-OCT-07 HORSERADISH LEAVES ZR-NB-95 22.800 19-OCT-07 HORSERADISH LEAVES 1-131 25.300 19-OCT-07 HORSERADISH LEAVES CS-134 12.300 19-OCT-07 HORSERADISH LEAVES CS-137 18.500 20-NOV-07 HORSEREDISH LEAVES BE-7 567.400 +/- 153.300 20-NOV-07 HORSEREDISH LEAVES K-40 5534.200 +/- 409.300 20-NOV-07 HORSEREDISH LEAVES MN-54 11.800 20-NOV-07 HORSEREDISH LEAVES CO-58 11.800 20-NOV-07 HORSEREDISH LEAVES FE-59 28.400 20-NOV-07 HORSEREDISH LEAVES CO760 12.100 20-NOV-07 HORSEREDISH LEAVES ZN-65 30.000 20-NOV-07 HORSEREDISH LEAVES ZR-NB-95 18.200 20-NOV-07 HORSEREDISH LEAVES 1-131 34.000 20-NOV-07 HORSEREDISH LEAVES CS-134 15.300 20-NOV-07 HORSEREDISH LEAVES CS-137 11.500 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 70

Exposure Pathway - Ingestion Food/Garden Location N-1 Gam*...ma Spectrum.

Collection Sample NulieConc~entration Duplicate Date Description (pCiIKg Wet) A~nalysiis _

28-MAR-07 HORSERADISH LEAVES BE-7 < 155.200 28-MAR-07 HORSERADISH LEAVES K-40 2660.000 +/- 378.300 28-MAR-07 HORSERADISH LEAVES MN-54 < 9.700 28-MAR-07 HORSERADISH LEAVES CO-58 < 14.000 28-MAR-07 HORSERADISH LEAVES FE-59 < 31.200 28-MAR-07 HORSERADISH LEAVES CO-60 < 10.900 28-MAR-07 HORSERADISH LEAVES ZN-65 < 25.300 28-MAR-07 HORSERADISH LEAVES ZR-NB-95 < 8.000 28-MAR-07 HORSERADISH LEAVES 1-131 < 13.300 28-MAR-07 HORSERADISH LEAVES CS-134 < 16.200 28-MAR-07 HORSERADISH LEAVES CS-137 < 12.500 25-APR-07 HORSERADISH LEAVES BE-7 < 147.500 25-APR-07 HORSERADISH LEAVES K-40 3063.300 +/- 332.800 25-APR-07 HORSERADISH LEAVES MN-54 < 9.500 25-APR-07 HORSERADISH LEAVES CO-58 < Y22.000 25-APR-07 HORSERADISH LEAVES FE-59 < 14.800 25-APR-07 HORSERADISH LEAVES C0-60 < 11.500 25-APR-07 HORSERADISH LEAVES ZN-65 < 16.500 25-APR-07 HORSERADISH LEAVES ZR-NB-95 < 15.300 25-APR-07 HORSERADISH LEAVES 1-131 < 19.200 25-APR-07 HORSERADISH LEAVES CS-134 < 10.500 25-APR-07 HORSERADISH LEAVES CS-137 < 12.000 17-MAY-07 HORSERADISH LEAVES BE-7 401.300 +/- 193.000 17-MAY-07 HORSERADISH LEAVES K-40 3517.300 +/- 398.500 17-MAY-07 HORSERADISH LEAVES MN-54 < 7.400 17-MAY-07 HORSERADISH LEAVES CO-58 < 13.300 17-MAY-07 HORSERADISH LEAVES FE-59 < 29.500 17-MAY-07 HORSERADISH LEAVES C0-60 < 17.200 17-MAY-07 HORSERADISH LEAVES ZN-65 < 23.200 17-MAY-07 HORSERADISH LEAVES ZR-NB-95 < 9.000 17-MAY-07 HORSERADISH LEAVES 1-131 < 26.600 17-MAY-07 HORSERADISH LEAVES CS-134 < 12.300 17-MAY-07 HORSERADISH LEAVES CS-137 < 19.400 13-JUN-07 HORSERADISH LEAVES BE-7 858.100 +/- 229.800 13-JUN-07 HORSERADISH LEAVES K-40 2787.300 +/- 439.700 13-JUN-07 HORSERADISH LEAVES MN-54 < 20.900 13-JUN-07 HORSERADISH LEAVES CO-58 < 16.200 13-JUN-07 HORSERADISH LEAVES FE-59 < 22.800 13-JUN-07 HORSERADISH LEAVES CO-60 < 11.600 13-JUN-07 HORSERADISH LEAVES ZN-65 < 37.600 13-JUN-07 HORSERADISH LEAVES ZR-NB-95 < 11.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 71

Exposure Pathway - Ingestion Food/Garden Location N-1 r.,g wi 13-JUN-07 HORSERADISH LEAVES 1-131 < 32.700 13-JUN-07 HORSERADISH LEAVES CS-134 < 16.400 13-JUN-07 HORSERADISH LEAVES CS-137 < 19.300 11-JUL-07 HORSERADISH LEAVES BE-7 < 207.500 Duplicate 11-JUL-07 HORSERADISH LEAVES BE-7 < 179.800 11-JUL-07 HORSERADISH LEAVES K-40 3119.800 + /- 462.100 Duplicate 11-JUL-07 HORSERADISH LEAVES K-40 3402.100 + /- 460.800 11-JUL-07 HORSERADISH LEAVES MN-54 < 14.100 Duplicate 11-JUL-07 HORSERADISH LEAVES MN-54 < 1.3.800 11-JUL-07 HORSERADISH LEAVES CO-58 < 9.400 Duplicate 11-JUL-07 HORSERADISH LEAVES CO-58 < 16.600 11-JUL-07 HORSERADISH LEAVES FE-59 < 40.700 Duplicate 11-JUL-07 HORSERADISH LEAVES FE-59 < 40.800 11-JUL-07 HORSERADISH LEAVES CO-60 < 11.600 Duplicate 11-JUL-07 HORSERADISH LEAVES CO-60 < 18.900 11-JUL-07 HORSERADISH LEAVES ZN-65 < 33.300 Duplicate 11-JUL-07 HORSERADISH LEAVES ZN-65 < 43.300 11-JUL-07 HORSERADISH LEAVES ZR-NB-95 < 15.000 Duplicate 11-JUL-07 HORSERADISH LEAVES ZR-NB-95 < 16.200 11-JUL-07 HORSERADISH LEAVES 1-131 < 26.400 Duplicate 11-JUL-07 HORSERADISH LEAVES 1-131 < 29.700 11-JUL-07 HORSERADISH LEAVES CS-134 < 20.000 Duplicate 11-JUL-07 HORSERADISH LEAVES CS-134 < 14.600 11-JUL-07 HORSERADISH LEAVES CS-137 < 16.200 Duplicate 11-JUL-07 HORSERADISH LEAVES CS-137 < 13.600 22-AUG-07 HORSERADISH LEAVES BE-7 365.300 + -/- 200.800 22-AUG-07 HORSERADISH LEAVES K-40 3373.000 + I/- 433.000 22-AUG-07 HORSERADISH LEAVES MN-54 < 14.000

'22-AUG-07 HORSERADISH LEAVES CO-58 < 13.900 22-AUG-07 HORSERADISH LEAVES FE-59 < 25.100 22-AUG-07 HORSERADISH LEAVES CO-60 < 9.800 22-AUG-07 HORSERADISH LEAVES ZN-65 < 25.400 22-AUG-07 HORSERADISH LEAVES ZR-NB-95 < 15.800 22-AUG-07 HORSERADISH LEAVES 1-131 < 20.800 22-AUG-07 HORSERADISH LEAVES CS-134 < 11.300 22-AUG-07 HORSERADISH LEAVES CS-137 < 11.700 19-OCT-07 PEPPER PLANT LEAVES BE-7 1610.000 +/- 452.800 19-OCT-07 PEPPER PLANT LEAVES K-40 8183.200 +/- 702.000 19-OCT-07 PEPPER PLANT LEAVES MN-54 < 18.000 19-OCT-07 PEPPER PLANT LEAVES CO-58 15.300 19-OCT-07 PEPPER PLANT LEAVES FE-59 39.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station

-Page C - 72

Exposure Pathway - Ingestion Food/Garden Location N-1 A' Gamma Spectrum Collection )' Sample' Nuclide Concentraion' , Duplicate Date ~. Descriptio~n (pCiIKg Wet) Analysis 19-OCT-07 PEPPER PLANT LEAVES CO-60 14.500 19-OCT-07 PEPPER PLANT LEAVES ZN-65 < 46.800 19-OCT-07 PEPPER PLANT* LEAVES ZR-NB-95 < 27.600 19-OCT-07 PEPPER PLANT LEAVES 1-131 < 45.800 19-OCT-07 PEPPER PLANT LEAVES CS-134 < 25.800 19-OCT-07 PEPPER PLANT LEAVES CS-137 < 23.900 20-NOV-07 HORSEREDISH LEAVES BE-7 < 143.400 20-NOV-07 HORSEREDISH LEAVES K-40 2908.100 +/- 310.000 20-NOV-07 HORSEREDISH LEAVES MN-54 < 7.300 20-NOV-07 HORSEREDISH LEAVES CO-58 < 11.400 20-NOV-07 HORSEREDISH LEAVES FE-59 < 29.200 20-NOV-07 HORSEREDISH LEAVES CO-60 < 6.200 20-NOV-07 HORSEREDISH LEAVES ZN-65 < 13.000 20-NOV-07 HORSEREDISH LEAVES ZR-NB-95 < 9.100 20-NOV-07 HORSEREDISH LEAVES 1-131 < 24.900 20-NOV-07 HORSEREDISH LEAVES CS-134 < 12.400 20-NOV-07 HORSEREDISH LEAVES CS-137 < 11.700 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 73

Exposure Pathway - Ingestion Food/Garden Location Q-6 11-JUL-07 RHUBARB BE-7 282.700 +/- 157 .200 11-JUL-07 RHUBARB K-40 2495.700 +/- 381.600 11-JUL-07 RHUBARB MN-54 < 11.700 11-JUL-07 RHUBARB CO-58 < 12.200 11-JUL-07 RHUBARB FE-59 < 9. 600 11-JUL-07 RHUBARB CO-60 < 13.400 11-JUL-07 RHUBARB ZN-65 K 18.400 11-JUL-07 RHUBARB ZR-NB-95 < 9.100 11-JUL-07 RHUBARB 1-131 < 25.800 11-JUL-07 RHUBARB CS-134 < 16. 600 11-JUL-07 RHUBARB CS-137 < 14.700 22-AUG-07 BUTTERNUT SQUASH LEAVES BE-7 2727.400 +/- 352.100 22-AUG-07 BUTTERNUT SQUASH LEAVES K-40 6406.400 +/- 646.200 22-AUG-07 BUTTERNUT SQUASH LEAVES MN-54 K 18.300 22-AUG-07 BUTTERNUT SQUASH LEAVES CO-58 11.700 22-AUG-07 BUTTERNUT SQUASH LEAVES FE-59 26.400 22-AUG-07 BUTTERNUT SQUASH LEAVES CO-60 18. 900 22-AUG-07 BUTTERNUT SQUASH LEAVES ZN-65 22.800 22-AUG-07 BUTTERNUT SQUASH LEAVES ZR-NB-95 9.800 22-AUG-07 BUTTERNUT SQUASH LEAVES 1-131 22.000 22-AUG-07 BUTTERNUT SQUASH LEAVES CS-134 19.500 22-AUG-07 BUTTERNUT SQUASH LEAVES CS-137 16.500 19-OCT-07 PEPPER PLANT LEAVES BE-7 1381.700 +/- 288.400 19-OCT-07 PEPPER PLANT LEAVES K-40 8289.200 +/- 653. 800 19-OCT-07 PEPPER PLANT LEAVES MN-54 K 13. 600 19-OCT-07 PEPPER PLANT LEAVES CO-58 K 11.300 19-OCT-07 PEPPER PLANT LEAVES FE-59 < 26.400 19-OCT-07 PEPPER PLANT LEAVES CO-60 < 20. 600 19-OCT-07 PEPPER PLANT LEAVES ZN-65 K 60. 000 19-OCT-07 PEPPER PLANT LEAVES ZR-NB-95 K 25.400 19-OCT-07 PEPPER PLANT LEAVES 1-131 25.100 19-OCT-07 PEPPER PLANT LEAVES CS-134 17. 600 19-OCT-07 PEPPER PLANT LEAVES CS-137 23.500 20-NOV-07 KALE BE-7 88.900 20-NOV-07 KALE K-40 3744.500 +/- 336.400 20-NOV-07 KALE MN-54 K 8.900 20-NOV-07 KALE CO-58 < 9.200 20-NOV-07 KALE FE-59 K 24.700 20-NOV-07 KALE CO-60 K 13.900 20-NOV-07 KALE ZN-65 K 21.400 20-NOV-07 KALE ZR-NB-95 K 16.400 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 74

Exposure Pathway - Ingestion Food/Garden Location Q-6 20-NOV-07 KALE 1-131 < 8.100 20-NOV-07 KALE CS-134 < 10.500 20-NOV-07 KALE CS-137 < 8.100 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 75

Exposure Pathway - Ingestion Feed and Forage Location NR-D1 iii it ecm*a Collection Sample Nucide ~ Concentration D~uplicate

~Date Description (pCiIKg Wet) Analysis 10-OCT-07 IRRIGATED CORN BE-7 < 48.800 10-OCT-07 IRRIGATED CORN K-40 1378.500 +*/- 305.000 10-OCT-07 IRRIGATED CORN MN-54 < 5.800 10-OCT-07 IRRIGATED CORN CO-58 < 3.800 10-OCT-07 IRRIGATED CORN FE-59 < 10.900 10-OCT-07 IRRIGATED CORN CO-60 < 7.200 10-OCT-07 IRRIGATED CORN ZN-65 < 15.500 10-OCT-07 IRRIGATED CORN ZR-NB-95 < 6.600 10-OCT-07 IRRIGATED CORN 1-131 < 9.100 10-OCT-07 IRRIGATED CORN CS-134 < 6.200 10-OCT-07 IRRIGATED CORN CS-137 < 7.300 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 76

Exposure Pathway - Ingestion Feed and Forage Location NR-D2 24-SEP-07 IRRIGATED CORN BE-7 63. 600 24-SEP-07 IRRIGATED CORN K-40 3390.300 +-17 229.900 24-SEP-07 IRRIGATED CORN MN-54 < 6.900 24-SEP-07 IRRIGATED CORN CO-58 < 7.300 24-SEP-07 IRRIGATED CORN FE-59 < 15.500 24-SEP-07 IRRIGATED CORN CO-60 < 6.000 24-SEP-07 IRRIGATED CORN ZN-65 < 8.500 24-SEP-07 IRRIGATED CORN ZR-NB-95 K 6.500 24-SEP-07 IRRIGATED CORN 1-131 K 25.200 24-SEP-07 IRRIGATED CORN CS-134 K 6.000 24-SEP-07 IRRIGATED CORN CS-137 5.800 01-NOV-07 IRRIGATED SOYBEANS BE-7 115.800 01-NOV-07 IRRIGATED SOYBEANS K-40 14596.000 +/- 599.400 01-NOV-07 IRRIGATED SOYBEANS MN-54 < 6.200 01-NOV-07 IRRIGATED SOYBEANS CO-58 < 12.300 01-NOV-07 IRRIGATED SOYBEANS FE-59 K 26.300 01-NOV-07 IRRIGATED SOYBEANS CO-60 < 14 .500 01-NOV-07 IRRIGATED SOYBEANS ZN-65 < 24.900 01-NOV-07 IRRIGATED SOYBEANS ZR-NB-95 K 11.600 01-NOV-07 IRRIGATED SOYBEANS 1-131 < 17.400 01-NOV-07 IRRIGATED SOYBEANS CS-134 K 5.100 01-NOV-07 IRRIGATED SOYBEANS CS-137 < 10.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 77

Exposure Pathway - Ingestion Feed and Forage Location NR-U1 Co~~~l~~ection"mm Nudlldc ~ ocnrumot. Duic Clleto Sample Nuld. Gamcnrnatin Spectrum>

Dpate Description (pCi/Kg We)Analysis 17-SEP-07 NON-IRRIGATED CORN BE-7 < 136.700 17-SEP-07 NON-IRRIGATED CORN K-40 2854.600 +/- 440. 900 17-SEP-07 NON-IRRIGATED CORN MN-54 < 17.800 17-SEP-07 NON-IRRIGATED CORN CO-58 < 14.600 17-SEP-07 NON-IRRIGATED CORN FE-59 < 42.300 17-SEP-07 NON-IRRIGATED CORN CO-60 < 17.300 17-SEP-07 NON-IRRIGATED CORN ZN-65 K 18.500 17-SEP-07 NON-IRRIGATED CORN ZR-NB-95 K 19.200 17-SEP-07 NON-IRRIGATED CORN 1-131 < 23.900 17-SEP-07 NON-IRRIGATED CORN CS-134 K 13.000 17-SEP-07 NON-IRRIGATED CORN CS-137 < 10.700 04-OCT-07 NON-IRRIGATED SOYBEANS BE-7 161.800 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS BE-7 102.400 04-OCT-07 NON-IRRIGATED SOYBEANS K-40 14813.000 +/- 889.300 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS K-40 15944.000 +/- 601.000 04-OCT-07 NON-IRRIGATED SOYBEANS MN-54 <

14.000 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS MN-54 < 11.900 04-OCT-07 NON-IRRIGATED SOYBEANS c6-58 < 23.400 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS CO-58 <

4.300 04-OCT-07 NON-IRRIGATED SOYBEANS FE-59 <

57.400 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS FE-59 < 13. 500 04-OCT-07 NON-IRRIGATED SOYBEANS CO-60 < 17. 900 Duplicate 04-OCT-07. NON-IRRIGATED SOYBEANS CO-60 < 20.700 04-OCT-07 NON-IRRIGATED SOYBEANS ZN-65 < 75.900 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS ZN-65 <

31.300 04-OCT-07 NON-IRRIGATED SOYBEANS ZR-NB-95 < 21.200 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS ZR-NB-95 <

7. 900 04-OCT-07 NON-IRRIGATED SOYBEANS 1-131 <

22. 600 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS 1-131 <

9.400 04-OCT-07 NON-IRRIGATED SOYBEANS CS-134 < 14.800 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS CS-134 <

8. 100 04-OCT-07 NON-IRRIGATED SOYBEANS CS-137 <

16.300 Duplicate 04-OCT-07 NON-IRRIGATED SOYBEANS CS-137 <

11.100 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 78

Exposure Pathway - Aquatic Bottom Sediment Location DC TGamma Spectrum4, ColIecti6n INUCiiue }: Concentration ~ DUplicate Datei (pCi/Kg Dry) Aayi 11-MAY-07 K-40 13569.000 +/- 1124.000 11-MAY-07 MN-54 < 41.700 11-MAY-07 CO-58 < 47.700 11-MAY-07 FE-59 < 75.400 11-MAY-07 CO-60 107.900 +/- 62.600 11-MAY-07 ZN-65 < 86.700 11-MAY-07 CS-134 < 59.400 11-MAY-07 CS-137 179.800 +/- 37.700 26-OCT-07 K-40 12801.000 +/- 621.200 26-OCT-07 MN-54 < 24.600 26-OCT-07 CO-58 < 32.700 26-OCT-07 FE-59 < 48.600 26-OCT-07 CO-60 88.700 +/- 24.200 26-OCT-07 ZN-65 < 47.600 26-OCT-07 CS-134 < 20.200 26-OCT-07 CS-137 167.700 +/- 32.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 79

Exposure Pathway - Aquatic Bottom Sediment Location EEA 22-JUN-07 K-40 9920.200 +/- 786.600 22-JUN-07 MN-54 < 31.100 22-JUN-07 CO-58 < 36.100 22-JUN-07 FE-59 < 110.500 22-JUN-07 CO-60 < 26.500 22-JUN-07 ZN-65 < 65.000 22-JUN-07 CS-134 < 42.500 22-JUN-07 CS-137 < 28.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 80

Exposure Pathway - Aquatic Bottom Sediment Location JRR 02-AUG-07 K-40 14889.000 +/- 1091.000 02-AUG-07 MN-54 38.100 02-AUG-07 CO-58 43.800 02-AUG-07 FE-59 <

108.600 02-AUG-07 CO-60 28.500 02-AUG-07 ZN-65 76.600 02-AUG-07 CS-134 57.700 02-AUG-07 CS-137 121.500 +/- 37 .500 09-NOV-07 K-40 15503.000 +/- 671.500 09-NOV-07 MN-54 1 25. 600 09-NOV-07 CO-58 < 21.800 09-NOV-07 FE-59 < 56.900 09-NOV-07 CO-60 < 17.000 09-NOV-07 ZN-65 < 53. 900 09-NOV-07 CS-134 K 15.500 09-NOV-07 CS-137 129.300 +/- 27.000 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 81

Exposure Pathway - Aquatic Bottom Sediment Location MUDS 12-JUN-07 K-40 7502.300 +/- 856.400 12-JUN-07 MN-54 < 41.800 12-JUN-07 C0-58 < 45.200 12-JUN-07 FE-59 < 68.300 12-JUN-07 CO-60 < 24.300 12-JUN-07 ZN-65 < 96.900 12-JUN-07 CS-134 < 54.500 12-JUN-07 CS-137 < 24.200 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 82

Exposure Pathway - Aquatic Vegetation Location EEA Gamma Spectrum Collection MNuclide Concentration Duplicate Description (pCi.Kg Wet) Sample BE-7 1162.700 +/- 210.300 12-JUN-07 S PIKERU SH-12-JUN-07 SPIKERUSH K-40 3384.600+/- 358.600 12-JUN-07 SPIKERUSH MN-54 K 12.800 12-JUN-07 SPIKERUSH CO-58 < 14.300 12-JUN-07 SPIKERUSH FE-59 < 19.700 12-JUN-07 SPIKERUSH CO-60 K 14.300 12-JUN-07 SPIKERUSH ZN-65 K 21.400 12-JUN-07 SPIKERUSH ZR-NB-95 15.200 12-JUN-07 SPIKERUSH 1-131 34.600 12-JUN-07 SPIKERUSH CS-134 12.600 12-JUN-07 SPIKERUSE CS-137 17.400 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 83

Exposure Pathway - Aquatic Vegetation Location SC 27-JUN-07 CATTAILS BE-7 285.400+!- 149.800 27-JUN-07 CATTAILS K-40 2504 .100 +/- 321.500 27-JUN-07 CATTAILS MN-54 < 15.300 27-JUN-07 CATTAILS CO-58 < 15.700 27-JUN-07 CATTAILS FE-59 K 23.100 27-JUN-07 CATTAILS CO-60 < 12.800 27-JUN-07 CATTAILS ZN-65 K 25.100 27-JUN-07 CATTAILS ZR-NB-95 K 18.500 27-JUN-07 CATTAILS 1-131 K 27.600 27-JUN-07 CATTAILS CS-134 K 12.700 27-JUN-07 CATTAILS CS-137 < 11.100 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 84

Exposure Pathway - Terrestrial Vegetation Location EEA 21-MAY-07 PASTURAGE BE-7 739.500++/-/- 283.400 PASTURAGE K-40 7001. 400+/ 506.600 21-MAY-07 MN-54 < 10.000 21-MAY-07 PASTURAGE

< 16.300 21-MAY-07 PASTURAGE CO-58 21-MAY-07 PASTURAGE FE-59 28.200 CO-60 < 10.100 21-MAY-07 PASTURAGE 21-MAY-07 PASTURAGE ZN-65 34.400 PASTURAGE ZR-NB-95 < 11.200 21-MAY-07

< 35.600 21-MAY-07 PASTURAGE 1-131 CS-134 < 13.800 21-MAY-07 PASTURAGE

< 11.500 21-MAY-07 PASTURAGE CS-137 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 85

Exposure Pathway - Terrestrial Vegetation Location MUDS 22-JUN-07 PASTURAGE BE-7 407.500+/- 192.900 22-JUN-07 PASTURAGE K-40 4592.700+/- 336.800 22-JUN-07 PASTURAGE MN-54 < 17.200 22-JUN-07 PASTURAGE CO-58 < 16.700 22-JUN-07 PASTURAGE FE-59 < 24.800 22-JUN-07 PASTURAGE CO-60 < 9.700 22-JUN-07 PASTURAGE ZN-65 < 35.700 22-JUN-07 PASTURAGE ZR-NB-95 < 11.600 22-JUN-07 PASTURAGE 1-131 < 49.600 22-JUN-07 PASTURAGE CS-134 < 14.400 22-JUN-07 PASTURAGE CS-137 < 13.100 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 86

Exposure Pathway - Terrestrial Soil Location EEA 21-MAY-07 K-40 9090.300+/- 833.100 21-MAY-07 MN-54 < 34.800 21-MAY-07 CO-58 < 38.100 21-MAY-07 FE-59 < 80.500 21-MAY-07 CO-60 < 40.700 21-MAY-07 ZN-65 < 99.900 21-MAY-07 CS-134 < 53.300 21-MAY-07 CS-137 446.200+/- 64.800 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 87

Exposure Pathway - Terrestrial Soil Location MUDS 05-JUN-07 K-40 11616.000+/- 1004.000 05-JUN-07 MN-54 < 44.600 05-JUN-07 CO-58 < 49.400 05-JUN-07 FE-59 < 150.700 05-JUN-07 CO-60 < 13.800 05-JUN-07 ZN-65 < 78.900 05-JUN-07 CS-134 < 58.000 05-JUN-07 CS-137 326.400+/- 56.500 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 88

WOLF CREEK GENERATING STATION 2007 LAND USE CENSUS REPORT Revision 1 Prepared by:

12-21-07 Teresa L. Rice Date Peer Review:

12/26/07 Dan E. Haines Date Approved by:

~J~7 7~4~ 12/26/07 Robert A. Hammond Date 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 1

EXECUTIVE

SUMMARY

The annual Land Use Census of rural residents within five miles of the Wolf Creek Generating Station (WCGS) has been completed for 2007 in accordance with AP 07B-004, [Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program)].

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

Changes are not required for the Radiological Environmental Monitoring Program (REMP) broadleaf vegetation sample locations for 2008. The two broadleaf vegetation locations with the highest calculated annual average D/Q rankings are Q2.35-MILA1619 and N2.38-RRDR9.

AP 07B-004 specifies that an "alternate location may be used to provide continued monitoring".

The third-ranked garden is location C1.92-16RD1655. It should be noted that locations Q2.35-MILA1619, N2.38-RRDR9 and C1.92-16RD1655 were established sampling locations for the 2007-growing season.

The 2007 Land Use Census Report has been revised to add a trailer house residence located in Sector B. This location is the closest occupied residence in Sector B.

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

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

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

METHODOLOGY Two hundred fifteen surveys were mailed to the rural residents living within five miles of WCGS.

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

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

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

These results are contained in Table 4.

2007 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.

As identified in Table 2, sector B experienced a change in the nearest occupied residence.

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

These changes are identified in Table 3.

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 3

TABLE 1 2007 Land Use Census Data Location of Nearest:

Sector Residence Milking Animals Broadleaf Garden A A2.60-17TE1 520 None None B B1.86-PLRD16XX None B4.09-18RD1739 C C1.92-16RD1655 None C1.92-16RD1655 D D2.03-QULA1571 None D3.00-16RD1829 E E1.77-QULA1485 None None F F1.76-14RD1730 None F2.44-RERD1391 G G3.03-13RD1820 None G3.77-12RD1 831 H H3.09-12RD1711 None H3.30-QURD1 175 J J3.70-11 RD1540 None J3.80-11 RD1 535 K K2.70-12LA1 439 None K4.10-NARD1120 L L2.10-NARD 1339 None L2.39-NARD1309 M M2.47-14RD11322 None M3.10-13LA1 290 N N1.71-NARD1441 None N2.38-RRDR9 P P2.76-HW751534 None P2.76-HW751534 Q Q2.35-MILA1619 None Q2.35-MILA1619 R R2.08-NALN11650 None None Identifiers are based upon the following protocol:

EXAMPLE: Al'.4-16RD1525 "A" = Sector A "11.4" = 1.4 miles from the reactor "16RD1525" = address 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 4

TABLE 2 SECTOR 2006 NEAREST 2007 NEAREST RESIDENCE RESIDENCE A2.60-17TE1 520 A2.60-17TE1 520 B3.53-QURD1755 B1.86-PLRD16XX C1.92-16RD1655 C1.92-16RD1655 D2.03-QULA1571 D2.03-QULA1 571 El.77-QULA1485 El.77-QULA1485 F1.76-14RD1730 F1.76-14RD1730 G3.03-13RD1820 G3.03-13RD1820 H3.09-12RD1711 H3.09-12RD1711 J3.70-1 1 RD1540 J3.70-1 1RD 1540 K2.70-12LA1 439 K2.70-12LA1 439 L2.10-NARD1339 L2.10-NARD 1339 M2.47-14RD1322 M2.47-14RD1322 N1.71-NARD1441 N1.71 -NARD 1441 P2.76-HW751534 P2.76-HW751534 Q2.35-MILA1619 Q2.35-MILA1619 R2.08-NALN1650 R2.08-NALN1650 NOTE: Entries underlined indicate changes from the 2006 Land Use Census.

Locations are identified based upon the following protocol:

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

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

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

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 5

TABLE 3 2007 Land Use Census Milk and Garden Data SECTOR 2006 2007 2006 CLOSEST 2007 CLOSEST MILKING MILKING GARDEN GARDEN ANIMALS ANIMALS PRODUCING PRODUCING BROADLEAF BROADLEAF VEGETATION VEGETATION A None None None None B None None None B4.09-18RD1739 C None None C1.92-16RD1655 C1.92-16RD1655 D None None D3.00-16RD1829 D3.00-16RD1829 E None None E4.40-TRRD1551 None F None None F2.44-RERD1391 F2.44-RERD1391 G None None G3.66-12RD1814 G3.77-12RD1831 H None None H3.30-QURD1175 H3.30-QURD1175 J None None J3.90-11RD1531 J3.80-11RD1535 K None None K4.10-NARD1120 K4.10-NARD1120 L None None L2.39-NARD1309 L2.39-NARD1309 M None None M3.10-13LA1290 M3.10-13LA1290 N None None N2.38-RRDR9 N2.38-RRDR9 P None None P2.76-HW751534 P2.76-HW751534 Q None None Q2.35-MILA1619 Q2.35-MILA1619 R None None R2.08-NALN1650 None NOTE: Underlined entries indicate changes from the 2006 Land Use Census.

Locations are identified based upon the following protocol:

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

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

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

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

2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 6

TABLE 4 Information Used for D/Q Calculations FROM LAND FROM USE AN-04-045 DIST CALC NEAR NEAR FAR FAR SECTOR D/Q

1 _20%

SECTOR (MI) (METERS) DIST D/Q DIST D/Q CALC RANKING A 0 0 B 4.09 6585 6000 5.32E-10 7000 3.95E-10 4.52E-10 7 5.42E-10 C 1.92 3091 3000 7.26E-10 4000 4.36E-10 7.OOE-10 3 8.40E-10 D 3.00 4830 4000 3.20E-10 5000 2.18E-10 2.35E-10 13 2.82E-10 E 0 0 F 2.44 3928 3000 6.41E-10 4000 3.84E-10 4.03E-10 8 4.84E-10 G 3.77 6070 6000 3.65E-10 7000 2.71E-10 3.58E-10 11 4.30E-10 H 3.30 5313 5000 5.84E-10 6000 4.29E-10 5.35E-10 6 6.42E-10 J 3.80 6118 6000 3.72E-10 7000 2.76E-10 3.61E-10 10 4.33E-10 K 4.10 6601 6000 3.91E-10 7000 2.90E-10 3.30E-10 12 3.96E-10 L 2.39 3848 3000 9.61E-10 4000 5.77E-10 6.35E-10 4 7.62E-10 M 3.10 4991 4000 5.77E-10 5000 3.92E-10 3.94E-10 9 4.73E-10 N 2.38 3832 3000 1.09E-09 4000 6.54E-10 7.27E-10 2 8.72E-10 P 2.76 4444 4000 7.30E-10 5000 4.97E-10 6.27E-10 5 7.52E-10 Q 2.35 3784 3000 1.75E-09 4000 1.05E-09 1.20E-09 1 1.44E-09 R 0 0 _ I I I I I Originated by: Date: 09-14-07 Verified by: Date: 9-18-07 2007 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 7

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