ML071150130

2006 Annual Radiological Environmental Operating Report for the Period of January 1, 2006 Through December 31, 2006

ML071150130
Person / Time
Site:	Wolf Creek
Issue date:	04/19/2007
From:	Moles K Wolf Creek
To:	Document Control Desk, NRC/NRR/ADRO
References
RA 07-0045
Download: ML071150130 (153)

Text

,WSLF CREEK

.NUCLEAR OPERATING CORPORATION Kevin J. Moles Manager Regulatory Affairs April 19, 2007 RA 07-0045 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555

Subject:

Docket No. 50-482: 2006 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, 2006, through December 31, 2006.

No commitments are identified in this correspondence. If you have any questions concerning this matter, please contact me at (620) 364-4126, or Ms. Diane Hooper at (620) 364-4041.

Sincerely, KJM/rlt

Enclosure:

2006 Annual Radiological Environmental Operating Report cc: J. N. Donohew (NRC), w/e V. G. Gaddy (NRC), w/e B. S. Mallett (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 L-Jr(--;5

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION 2006 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT j

April 15, 2007

TABLE OF CONTENTS List of Tables ii List of Figures ii List of Charts ii Executive Summary 1 Introduction 1 I. Program Description 1 II. Discussion of Results 4 II1. Program Revisions/Changes 9 IV. Program Deviations 9 V. Interlaboratory Comparison Program Results 9 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 - 2006 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-49 Quarterly Drinking Water - Tritium C-59 Shoreline Sediment C-62 Fish C-64 Food/Garden C-69 Feed and Forage C-76 Bottom Sediment C-79 Aquatic Vegetation C-83 Terrestrial Vegetation C-86 Soil C-88 Deer C-90 Appendix D - 2006 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-137 Activity in Bottom Sediment 30 ii

EXECUTIVE

SUMMARY

Plant-related activation, corrosion or fission products were not detected during 2006 in airborne particulate and radioiodine filters, ground water, drinking water, shoreline sediment, broadleaf vegetation, crops, terrestrial vegetation, aquatic vegetation, soil or deer samples. Activation, corrosion or fission products attributable to plant operation were detected during 2006 in surface water, fish, and bottom sediment samples.

Nuclides detected in Radiological Environmental Monitoring Program (REMP) samples were below applicable NRC reporting levels, and program lower limits of detection were met.

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 2006 Annual Radiological Environmental Operating Report for Wolf Creek Generating Station (WCGS) covers the period from January 1 through December 31, 2006. 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), results of sample analyses, a discussion of monitoring program results, a description of revisions to and deviations from the program, and the results of Interlaboratory Comparison Programs. Individual sample results and a summary of results in the Nuclear Regulatory Commission (NRC) Branch Technical Position specified format 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.

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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. The volume of air sampled was calculated from the average of initial and final flow rates and the total time of collection. Each pump was equipped with a time totalizer that was checked weekly against the elapsed time to identify electrical power outages.

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 47 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.

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

Drinking water was sampled at the water treatment facilities for the towns of Burlington (control location BW-15), Neosho Falls (indicator location NF-DW) and Iola (indicator location IO-DW).

The Burlington facility is located upstream and the Iola and Neosho Falls facilities are located downstream of the confluence of the discharge from Coffey County Lake and the Neosho River.

During 2006, the Neosho Falls water treatment facility closed. 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. Two indicator (N-1 and Q-6) gardens (Figure 4) and two control (D-1 and D-2) gardens (Figure 5) were sampled. Gamma isotopic analyses were performed on all samples.

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

E. Additional Samples Collected (not required by ODCM)

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

Bottom sediment samples were collected at the Environmental Education Area (EEA) and from the Make-Up Discharge Structure (MUDS). Gamma isotopic analysis was performed on the bottom sediment samples. These indicator samples were collected as part of a cooperative sampling effort with the Kansas Department of Health and Environment (KDHE). The sample locations are identified on Figure 3.

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

Terrestrial vegetation was sampled from indicator locations EEA and MUDS. Gamma isotopic analysis was performed on the terrestrial vegetation 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.

A deer sample was obtained from indicator location A.8. Gamma isotopic analysis was performed on the deer sample. The sample was split with the KDHE. The sample location is 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.

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The gross beta results of 2006 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 2006 weekly gross beta analyses range for indicator locations was 0.014 to 0.059 pCi/m 3, which was within the 1983 and 1984 pre-operational range. Additionally, the annual mean for indicator locations for 2006 (0.029 pCi/m 3) was lower than the annual mean for 1983 (0.032 pCi/m 3).

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

The annual mean for indicator locations for 2006 (0.029 pCi/m 3) was similar to the annual mean of the control location (0.028 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 2006, the range for Be-7 detected activity was 0.058 to 0.113 pCi/m 3 for indicator locations, and the annual mean for indicator locations was 0.080 pCi/m 3.

The control location annual mean for Be-7 detected activity (0.080 pCi/m 3) was similar to the indicator locations annual mean (0.088 pCi/m 3).

ODCM required lower limits of detection were met and 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 2006 was 0.202 mR/day and the annual mean for the control locations was 0.192 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, 7-14, 18, 26-30, 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.

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C. Waterborne Pathway (1) Surface Water Tritium, attributable to WCGS operation, was detected in all surface water samples collected from Coffey County Lake during 2006. Chart 4 illustrates the yearly averages of surface water tritium data for the spillway location. Chart 4 shows that the average tritium concentration of 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 (4.0 pCi/L) was higher when compared to the annual mean of the indicator locations (3.9 pCi/L). The 2006 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 2006 and no unusual trends were noted.

(4) Shoreline Sediment Naturally occurring K-40 [11,521-12,123 pCi/kg, dry] was detected in samples obtained from the indicator location (DC) and in samples obtained from the control location (JRR) [7,107-11,308 pCi/kg, dry]. K-40 was also detected during pre-operational shoreline sediment monitoring.

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ODCM required lower limits of detection were met. Activity due to plant operation was not evident in shoreline sediment samples during 2006 and no unusual trends were noted.

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

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

During 2006, fish were also analyzed for tritium. All fish samples taken from Coffey County Lake had tritium activity detected (9,471.9 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 2006 (14,745 pCi/kg), would receive a committed effective dose equivalent of 0.019 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.

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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 (107.3 and 139.1 pCi/kg) was detected in the 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 during 2006.

Chart 6 plots the Co-60 detected activity from the discharge cove and reflects a decreasing trend.

Cs-137 activity (189.3 and 224.1 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 2006 indicator bottom sediment samples were within the pre-operational range. (Cs-137 activity detected in 1981 and 1982 was in the range of 79 to 953 pCi/kg. The decay corrected range of pre-operational Cs-1 37 activity detected is approximately 44 to 531 pCi/kg.) Cs-137 activity has been identified in plant effluents. Cs-137 activity (140.5 and 164.8 pCi/kg) was also detected in the control location samples and in the sample obtained from the indicator location EEA (96.9 pCi/kg).

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-1 37 activity detected at the JRR control location has been decreasing.

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

(2) Aquatic Vegetation Naturally occurring Be-7 and K-40 activity were detected in samples collected in 2006. 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 2006. 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.

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

(5) Deer Gamma analysis detected naturally occurring K-40 (2860.5 pCi/kg wet) activity in the deer sample obtained from indicator location A.8. K-40 activity was also detected during pre-operational monitoring. K-40 was the only activity detected in the deer sample. No unusual trends were noted.

III. PROGRAM REVISIONS/CHANGES In 2006, the water treatment facility located at Neosho Falls closed. The Iola water treatment facility became the indicator drinking water sample location.

During 2006, garden location G-1 was removed from the program since the landowners have vacated the residence. Locations Q-6 and N-1 became the two indicator locations. Alternate garden location C-2 was added to the program.

Three new ground water sample locations were added to the REMP: F-i, G-2 and J-2. These locations were added based upon the recommendations in Performance Improvement Request (PIR) 2005-3037.

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 AP 07B-004, 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 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/

Hours Unavailable 49 01/05/06 - 01/11/06 >5%/-95 Equipment Malfunction 48 04/19/06 - 04/27/06 >5%/-103 Equipment Malfunction Drinking Water August/2006: The drinking water sampler at the control location (Burlington Water Treatment Plant) was found inoperable and did not collect water for approximately 54 hours6.25e-4 days <br />0.015 hours <br />8.928571e-5 weeks <br />2.0547e-5 months <br />. The sampler was removed from service and replaced with an operating unit. (Reference CR 2006-001481)

V. INTERLABORATORY COMPARISON PROGRAM RESULTS During 2006, Environmental, Inc., Midwest Laboratory was contracted to perform radiological analysis of environmental samples for WCNOC. The lab participated in the intercomparison 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 9 of 30

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 0.149 mRem for 2006.

Using sample data obtained from the REMP, an adult drinking 2 liters per day of surface water from Coffey County Lake, using the average tritium activity (11,286 pCi/L), would receive a committed effective dose equivalent of 0.515 mRem per year. For an adult eating 21 kg of fish per year from Coffey County Lake, using the average tritium activity (9,472 pCi/kg), would receive a committed effective dose equivalent of 0.012 mRem per year. Based upon the REMP results, the dose from both pathways was calculated to be 0.527 mRem per year.

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

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

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TABLE 1 2006 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) 2006 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 42 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, 29-31, 37, 38 and 47 on Figure 2).

An outer ring of stations, one in each meteorological sector in the 3-5 mile range from the site (Locations 4-6, 15-17, 19-25, and 33-36 on Figure 2). Six sectors [A, B, C, D, G, and L] contain an additional station (Locations 2, 3, 10, 14, 28 and 49).

The balance of the stations to be placed in special interest areas such as population centers (Locations 23 and 32), nearby residences 2006 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),

• chools (Location 23),

nd in two areas to S*erve as control Stations 10-20 miles Clistant from the site (iLocations 39 and 48 c in Figure 5).

WATERBORNE ( See Figure 3)

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

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

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

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TABLE 1 (Cont.)

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

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

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

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

INGESTION (See Figures 4 & 5)

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

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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).

2006 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 TLDs 1 1.4 N A 2 2.7 N A 3 3.1 NE C 4 4.1 NNE B 5 4.1 NE C 6 4.6 ENE D 7 2.1 NE C 8 1.7 NNE B 9 2.0 ENE D 10 2.4 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 21 3.8 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 28 2.6 SW L 29 2.7 SSW K 30 2.5 W N 31 3.0 WNW P 32 3.1 WNW P 33 3.6 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 2006 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 TLDs 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 46 1.6 WNW P 47 0.16 S J 48 14.7 ENE D 49 0.8 NNE B Surface Water JRR 3.7 W N SP 3.2 SSE H Ground Water B-12 1.9 NNE B C-10 2.7 W N C-49/L-49 2.8 SW L F-1 2.5 ESE F G-2 3.6 SE G J-1 3.8 S J J-2 4.3 S J Drinking Water BW-15 3.9 SW L IO-DW 26.1 SSE H NF-DW 17.5 SSE H Shoreline Sediment DC 0.8 WNW P JRR 3.6 W N Fish CCL 0.6 WNW P JRR 3.7 W N Food/Garden C-2 1.9 NE C D-1 14.7 ENE D 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 MUDS 1.5 WNW P Terrestrial Vegetation EEA 3.0 NNW R MUDS 1.5 WNW P Soil EEA 3.0 NNW R MUDS 1.5 WNW P Deer A.8 0.8 N A 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 17 of 30

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

Location Qtr. 1 Qtr. 1 2- Qtr. 2 Qtr. 2 2- Qtr. 3 Qtr. 3 2-f 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 (mR) 1 16.4 0.9 21.3 1.1 18.1 1.3 19.8 0.9 75.6 2 14.3 0.8 19.5 0.9 15.6 0.9 18.2 1.0 67.7 3 15.8 0.8 20.1 0.6 17.2 0.9 19.2 1.1 72.3 4 16.0 0.3 23.2 1.9 17.7 0.6 19.3 1.1 76.2 5 16.6 2.4 19.8 1.2 16.5 1.0 18.3 1.5 71.2 6 15.5 1.8 19.3 1.0 17.8 0.7 18.4 1.0 71.1 7 15.0 0.7 19.8 0.9 17.4 1.3 19.5 2.6 71.7 8 16.5 1.2 21.3 1.0 17.7 1.5 21.5 2.1 76.9 9 13.9 0.7 19.4 2.8 16.4 0.6 17.4 0.8 67.2 10 16.1 1.1 20.6 1.0 17.7 0.4 19.4 0.5 73.8 11 17.0 0.6 21.6 1.2 19.5 1.1 20.5 1.1 78.7 12 16.0 1.0 20.6 0.9 18.8 0.9 19.1 0.7 74.5 13 16.6 0.8 21.1 0.9 19.9 1.4 20.0 0.6 77.6 14 16.7 1.1 21.4 1.7 18.2 1.7 19.5 0.9 75.7 15 16.1 0.7 21.9 2.6 17.9 2.1 19.8 1.2 75.6 16 15.1 0.7 20.5 0.8 17.8 2.7 18.4 0.8 71.8 17 15.5 1.2 20.8 0.9 18.2 1.0 19.4 1.6 73.8 18 16.5 2.5 20.2 1.3 18.8 1.8 20.0 3.1 75.4 19 17.5 1.5 21.8 1.3 18.3 0.9 20.3 1.7 77.9 20 17.2 3.0 20.9 1.1 19.2 1.6 19.2 2.0 76.5 21 13.8 0.5 18.5 0.8 16.6 0.9 17.2 0.8 66.1 22 19.3 3.6 21.6 1.6 21.8 0.9 21.1 0.9 83.8 23 16.1 0.6 21.1 2.6 18.3 3.6 19.6 0.8 75.1 24 15.8 0.9 21.1 2.0 18.0 1.0 20.7 3.2 75.6 25 13.6 0.8 20.7 3.3 16.1 3.0 17.1 1.0 67.6 26 16.0 3.2 19.5 1.0 15.1 0.8 18.1 1.0 68.7 27 17.9 3.6 20.4 0.3 17.1 0.5 20.0 0.9 75.4 28 13.8 0.7 19.7 3.1 14.4 1.2 18.1 1.5 66.1 29 13.1 0.9 18.0 1.5 13.6 0.3 16.9 1.0 61.7 30 16.6 1.9 21.7 1.2 18.8 1.7 19.4 0.5 76.7 31 17.0 3.4 19.8 1.5 15.9 0.8 18.9 0.9 71.5 32 16.0 2.4 20.9 1.0 15.7 1.4 18.7 1.1 71.3 33 17.2 0.6 22.8 2.6 19.7 3.4 20.3 0.8 80.0 34 17.5 1.9 21.8 1.8 17.5 1.0 20.2 1.4 77.0 35 16.1 0.7 22.0 1.2 17.1 0.9 19.6 0.8 74.8 36 16.7 3.4 21.9 3.6 17.2 0.4 19.2 1.0 75.1 37 15.8 1.4 20.7 2.8 15.9 0.6 18.6 1.3 71.0 38 17.3 1.5 23.0 2.3 17.7 0.9 20.1 1.0 78.2 39 16.0 0.9 18.9 1.3 15.9 1.2 18.3 1.4 69.1 41 16.7 0.9 21.6 2.0 17.6 0.9 20.3 1.1 76.2 42 12.0 3.2 16.0 1.3 10.9 0.4 14.1 0.6 53.1 43 12.1 3.5 14.9 0.9 10.6 1.1 13.7 1.8 51.3 44 16.4 1.8 20.6 1.6 17.1 1.4 19.0 0.8 73.2 46 15.5 0.2 19.7 1.4 17.8 3.5 19.2 1.1 72.2 47 17.5 2.3 21.8 1.7 15.8 1.2 21.8 2.2 76.8 48 15.2 1.2 19.5 1.6 16.1 0.9 18.6 1.5 69.4 49 15.4 0.9 20.2 0.8 15.6 0.6 18.6 0.9 69.7 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 18 of 30

FIGURE 1 AJIRBFRNE FA1IWAYSMRJNG LOCA-IONS 0 = AIFRORNE PARlC UATIE AND RADIOIODINE 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 19 of 30

FIGURE 2 DIFECTRADIA-ON PA-IWAYSA\RMNG LOCA10NS 0 = -[D LOCATONS 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 20 of 30

FIGURE 3 WA-IEU RNE PA'HWAY S,'MPUNG LOCAI'ONS

• =DRINKING V\ATER A = SJRFAC EWA-ER

• =GRDUND V\ATER * = 9-1OREUINESE)IMENT

• =RD1OM SEIMENT = AQUA1IC VEGEIA-ON/ ALGAE 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 21 of 30

FIGURE 4 INGESTION PA'HWAY SMFRJNG LOCA-IONS A = AS-%i (JRR) 0 = EROADLEAFVEGER1TON t = FISH (CCL)

• = 801L V - DEER

' = ]ERRFSIR1ALVEGE1Ar1ON 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 22 of 30

FIGURE 5 A

R B C

D E

F G

J DISIANTSAM JNG

• = lD

• = AJF;BDF;E FAMCA-E & RFAD1OIODINE 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 23 of 30

CHART 1 2006 Airborne Gross Beta Weekly Results 0.060 A

0.050 a)~ 7 A A E 0.040 0 A

~ +

13 A U S I 0.030 S. A~Uht+ /~++

S +

0+ ~ 4

/+ ~A~ +

(n 0.020 ~~~a

+

A M

0.010 0.000 .11 LJ~~L-0 4 8 12 16 20 24 28 32 36 40 44 48 52 Week Number o Location 2 o Location 18 + Location 32 A Location 37 Location 48 (Control) u Location 49 2006 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 24 of 30

CHART 2 Historical Airborne Smoothed (Avg of 20) Indicator and Control Gross Beta 0.060 T 0.050 !

C.)

I Chernobyl accident I 0 0.040 H 0~

C,) 0.030 1

.-0 0 0.020 0

E 0.010 I c~N 0 0\C 0 00 00 0

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

L -----

_ Smoothed Avg. Control Location (48) i 2006 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 -"

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

• Avg. of Nearsite Locations A Avg. of Control Locations i-- Moving Avg. of Nearsite Locations (2 period) - - - Moving Avg. of Control Locations (2 period) 2006 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

• 8000- R2 = 0.9048 0

6000 4000 2000 1987 1989 1991 1993 1995 1997 1999 2001 2003 2005

,---+-Yearly Average of Spillway Location -- Polynomial Trendline I

2006 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

I-5 a) 00t}

Cn 4

Wu

(.9 3

2 1

-BW15 (Control) LW40 (indicator) --- NFDW (Indicator) - IODW (Indicator)1 2006 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 1000 500 -

0 r-I cO a 0 '- N CM It O CD w r- 00 0M 00 00 00 M a) ) 0 N co I U1) wD

0) M 0) M ) 0) 0) 0) oD 0 o o 0 0 0)

M0 0) 0) 0) 0) M M 0) 0) 0) 0) 0 0

0 0 0 0 0 0 co c ci c cM cM cM co cc cc cc cM co Co co co Co CO MO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

- Co-60 -Polynomial Trendline 2006 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 29 of 30

CHART 7 Detected Cs-137 Activity in Bottom Sediment 1000 I

900 800 700 600 3 500 400 300 200 100 0

(I-N- LO co 0 - (NJ M 'IT in N cO 0M 0 N. N* C T V- (O co cO c0 00 CD CD 0)

M 0) 0 0 0 0) 0) 0M 0) 0 0 0 0 0 0 0 O 1,- 000 - 0 (D (0 ( N--

1 - 0 N1 0)D M N-l - LO 0 0) 0 0 0 0 0 0 0 0 0 0 0 N- 0 - 0 C- ' -- 0 0 I DC Cs-137

• JRR Cs-137 - Polynomial Trendline (DC) Polynomial Trendline (JRR) 2006 Annual Radiological Environmental Operating Report - Wolf Creek Generating Station Page 30 of 30

- Environmental, Inc.

Midwest Laboratory an Afteqmy Tedinoiles Co.

700 Landwehr Road

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

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

January, 2006 through December, 2006

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

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

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

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 list results of the in-house "duplicate" program for the past twelve months. Acceptance is based on the difference of the results being less than the sum of the errors. Data for previous years available upon request.

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

Attachment A lists acceptance criteria for "spiked" samples.

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

Al

Attachment A ACCEPTANCE CRIT-ERIA 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 2 to 30 pCi/liter or kg 5.0 pCi/liter Strontium-90b

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

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

> 100 pCi/liter 5% of known value Tritium < 4,000 pCi/liter +/- lo = (pCi/liter) =

169.85 x (known) °0'°0

> 4,000 pCi/liter 10% of known value Radium-226,-228 a 0.1 pCi/liter 15% of known value Plutonium  ? 0.1 pCi/liter, gram, or sample 10% of known value Iodine-131, 5 55 pCi/liter 6.0 pCi/liter Iodine-129b > 55 pCi/liter 10% of known value Uranium-238, < 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)'.

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits Acceptance STW-1078 01/16/06 Sr-89 49.9 +/- 3.5 50.2 41.5 -58.9 Pass STW-1078 01/16/06 Sr-90 31.5 +/- 1.5 30.7 22.0 - 39.4 Pass STW-1079 01/16/06 Ba-133 86.5 +/- 4.1 95.0 78.6 -111.0 Pass STW-1079 01/16/06 Co-60 96.3 +/- 4.1 95.3 86.6 - 104.0 Pass STW-1079 01/16/06 Cs-i 34 22.6 +/- 3.0 23.1 14.4 -31.8 Pass STW-1079 01/16/06 Cs-137 109.0 +/- 5.9 111.0 101.0 -121.0 Pass STW-1079 01/16/06 Zn-65 198.0 +/- 11.2 192.0 159.0 - 225.0 Pass STW-1080 01/16/06 Gr. Alpha 10.8 +/- 1.4 9.6 1.0 -18.3 Pass STW-1080 01/16/06 Gr. Beta 56.9 +/- 1.9 61.9 44.6 -79.2 Pass STW-1081 01/16/06 Ra-226 4.3 +/- 0.4 4.6 3.4 -5.8 Pass STW-1081 01/16/06 Ra-228 7.1 +/- 1.8 6.6 3.7 - 9.5 Pass STW-1081 01/16/06 Uranium 20.7 +/- 0.5 22.1 16.9 - 27.3 Pass STW-1088 04/10/06 Sr-89 29.0 +/- 1.8 32.4 23.7 -41.1 Pass STW-1088 04/10/06 Sr-90 8.7 +/- 1.0 9.0 0.3 - 17.7 Pass STW-1089 04/10/06 Ba-1 33 10.3 +/-0.4 10.0 1.3 -18.7 Pass STW-1089 04/10/06 Co-60 114.0 +/-2.8 113.0 103.0 - 123.0 Pass STW-1089 04/10/06 Cs-1 34 41.9 +/- 1.4 43.4 34.7 - 52.1 Pass STW-1089 04/10/06 Cs-1 37 208.0 +/- 1.1 214.0 195.0 - 233.0 Pass STW-1089 04/10/06 Zn-65 154.0 +/-0.8 152.0 126.0 - 178.0 Pass STW-1090 04/10/06 Gr. Alpha 13.4 +/- 1.1 21.3 12.1 -30.5 Pass STW-1090 04/10/06 Gr. Beta 27.7 +/- 2.1 23.0 14.3 -31.7 Pass STW-1091 04/10/06 1-131 22.0 +/-0.3 19.1 13.9 -24.3 Pass STW-1092 04/10/06 H-3 7960.0 +/- 57.0 8130.0 6720.0 - 9540.0 Pass STW-1092 04/10/06 Ra-226 2.9 +/- 0.4 3.0 2.2 -3.8 Pass STW-1092 04/10/06 Ra-228 20.9 +/- 1.2 19.1 10.8 -27.4 Pass STW-1092 04/10/06 Uranium 68.6 +/- 3.4 69.1 57.1 -81.1 Pass STW-1094 07/10/06 Sr-89 15.9 +/-0.7 19.7 11.0 -28.4 Pass STW-1094 07/10/06 Sr-90 24.3 +/- 0.4 25.9 17.2 -34.6 Pass STW-1095 07/10/06 Ba-133 94.9 +/- 8.9 88.1 72.9 - 103.0 Pass STW-1095 07/10/06 Co-60 104.0 +/- 1.8 99.7 91.0 - 108.0 Pass STW-1095 07/10/06 Cs-1 34 48.7 +/- 1.3 54.1 45.4 - 62.8 Pass STW-1095 07/10/06 Cs-1 37 236.0 +/- 3.0 238.0 217.0 - 259.0 Pass STW-1095 07/10/06 Zn-65 126.0 +/- 8.0 121.0 100.0 - 142.0 Pass STW-1096 07/10/06 Gr. Alpha 10.9 +/- 1.0 10.0 1.3 - 18.6 Pass STW-1096 07/10/06 Gr. Beta 9.7 +/- 0.4 8.9 0.2 - 17.5 Pass STW-1097 07/10/06 Ra-226 11.0 +0.5 10.7 7.9 - 13.5 Pass STW-1097 07/10/06 Ra-228 12.2 +/-0.8 10.7 6.1 -15.3 Pass STW-1097 07/10/06 Uranium 43.4 +/-0.1 40.3 33.3 -47.3 Pass A1-1

TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)6 .

Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Resultb Resultc Limits Acceptance STW-1104 10/06/06 Sr-89 38.4 +/- 1.3 39.9 31.2 -45.7 Pass STW-1104 10/06/06 Sr-90 15.5 +/-:0.5 16.0 7.3 -24.7 Pass STW-1105 10/06/06 Ba-133 64.9 +/- 2.8 70.2 58.1 -82.3 Pass STW-1105 10/06/06 Co-60 61.6 +/- 1.0 62.3 53.6 -71.0 Pass STW-1105 10/06/06 Cs-134 29.0 +/- 0.9 29.9 21.2 -38.6 Pass STW-1105 10/06/06 Cs-1 37 77.8 +/- 2.4 78.2 69.5 -86.9 Pass STW-1105 10/06/06 Zn-65 293.0 +/- 2.4 277.0 229.0 - 325.0 Pass STW-1106 10/06/06 Gr. Alpha 23.9 +/- 2.5 28.7 16.3 -41.1 Pass STW-1106 10/06/06 Gr. Beta 23.7 +/- 1.4 20.9 12.2 -29.6 Pass STW-1107 d 10/06/06 1-131 28.4 +/- 1.2 22.1 16.9 -27.3 Fail STW-1108 10/06/06 Ra-226 14.5 +/- 0.5 14.4 10.7 - 18.1 Pass STW-1108 10/06/06 Ra-228 6.6 +/- 0.4 5.9 3.3 -8.4 Pass STW-1108 10/06/06 Uranium 2.9 +/- 0.1 3.2 0.0 -8.4 Pass STW-1 109 10/06/06 H-3 3000.0 +/- 142.0 3050.0 2430.0 - 3670.0 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resources Associates (ERA).

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

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.

A1-2

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

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

2006-1 6/5/2006 30 cm 54.81 70.73 +/- 0.69 38.37 - 71.25 Pass 2006-1 6/5/2006 60 cm 13.70 16.71 +/- 1.89 9.59 - 17.81 Pass 2006-1 6/5/2006 60 cm 13.70 16.69 +/- 0.94 9.59 - 17.81 Pass 2006-1 6/5/2006 90 cm 6.09 6.57 +/- 0.82 4.26 - 7.92 Pass 2006-1 6/5/2006 120 cm 3.43 3.65 +/- 0.22 2.40 -4.46 Pass 2006-1 6/5/2006 120 cm 3.43 3.09 +/- 0.33 2.40 -4.46 Pass 2006-1 6/5/2006 150 cm 2.19 2.35 +/- 0.38 1.53 - 2.85 Pass 2006-1 6/5/2006 150 cm 2.19 1.98 +/- 0.10 1.53 - 2.85 Pass 2006-1 6/5/2006 180 cm 1.52 1.56 +/- 0.26 1.06 - 1.98 Pass Environmental, Inc.

2006-2 11/6/2006 30 cm. 55.61 60.79 +/- 1.32 38.93 - 72.29 Pass 2006-2 11/6/2006 40 cm. 31.28 35.93 +/- 3.70 21.90 - 40.66 Pass 2006-2 1116/2006 50 cm. 20.02 21.55 +/- 1.20 14.01 - 26.03 Pass 2006-2 11/6/2006 60 cm. 13.90 14.90 +/- 1.42 9.73 - 18.07 Pass 2006-2 11/6/2006 75 cm. 8.90 8.03 +/- 0.51 6.23 -11.57 Pass 2006-2 11/6/2006 90 cm. 6.18 6.88 +/- 0.68 4.33 - 8.03 Pass 2006-2 11/6/2006 120 cm. 3.48 2.90 +/- 0.20 2.44 -4.52 Pass 2006-2 1116/2006 150 cm. 2.22 1.99 +/- 0.07 1.55 -2.89 Pass 2006-2 11/6/2006 180 cm. 1.54 1.79 +/- 0.94 1.08 - 2.00 Pass A2-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)a Lab Code b Date Analysis Laboratory results Known Control 2s, n=1 c Activity Limits d Acceptance SPW-301 1/20/2006 Fe-55 2700.10 +/- 70.00 2502.50 2002.00 - 3003.00 Pass SPAP-1 224 3/7/2006 Cs-1 34 37.13 +/- 3.70 39.52 29.52 - 49.52 Pass SPAP-1224 3/712006 Cs-1 37 118.25 +/- 8.97 119.30 107.37 - 131.23 Pass SPAP-1224 3/7/2006 Gr. Beta 520.32 +/- 7.42 455.00 364.00 - 637.00 Pass SPW-1228 3/7/2006 H-3 70891.00 +/- 719.00 75394.00 60315.20 - 90472.80 Pass SPW-1230 3/7/2006 Cs-1 34 38.58 +/- 2.10 39.51 29.51 - 49.51 Pass SPW-1230 3/7/2006 Cs-137 59.44 +/- 4.51 59.65 49.65 - 69.65 Pass SPMI-1232 3/7/2006 Cs- 134 41.20 +/- 1.33 39.51 29.51 - 49.51 Pass SPMI-1232 3/7/2006 Cs-1 37 57.82 +/- 3.96 59.65 49.65 - 69.65 Pass W-30906 3/9/2006 Gr. Alpha 24.24 +/- 0.47 20.08 10.04 - 30.12 Pass W-30906 3/9/2006 Gr. Beta 63.79 +/- 0.48 65.73 55.73 - 75.73 Pass SPW-2750 4/27/2006 Ni-63 116.00 + 2.49 100.00 60.00 - 140.00 Pass SPW-2869 5/11/2006 Fe-55 19473.00 +/- 188.00 23332.00 18665.60 - 27998.40 Pass SPAP-2871 5/1/2006 Cs- 134 33.97 + 1.10 37.50 27.50 - 47.50 Pass SPAP-2871 5/1/2006 Cs-137 114.44 2.81 118.90 107.01 - 130.79 Pass SPW-2875 5/1/2006 H-3 71057.00 + 730.20 75394.00 60315.20 - 90472.80 Pass STSO-3155 5/1/2006 Co-60 7950.80 +/- 67.29 7750.00 6975.00 - 8525.00 Pass STSO-3155 5/1/2006 Cs-1 34 12.49 +/- 0.13 11.59 1.59 -21.59 Pass STSO-3155 5/1/2006 Cs-137 14.10 +/- 0.12 11.63 1.63 -21.63 Pass SPAP-2873 5/2/2006 Gr. Beta 1724.80 +/- 4.51 1744.00 1395.20 - 2441.60 Pass SPF-3183 5/10/2006 Cs-1 37 2.47 +/- 0.03 2.38 1.43 - 3.33 Pass SPF-3183 5/10/2006 Cs-1 34 0.73 + 0.01 0.74 0.44 -1.04 Pass SPW-3460 5126/2006 C-14 4009.60 +/- 14.43 4741.00 2844.60 - 6637.40 Pass W-60606 6/6/2006 Gr. Alpha 21.94 +/- 0.46 20.08 10.04 - 30.12 Pass W-60606 6/6/2006 Gr. Beta 58.17 +/- 0.49 65.73 55.73 - 75.73 Pass SPW-3988 6/16/2006 Cs-134 35.56 +/- 1.40 36.00 26.00 - 46.00 Pass SPW-3988 6/16/2006 Cs-137 60.23 +/- 2.72 59.27 49.27 - 69.27 Pass SPW-3988 6/16/2006 1-131(G) 94.01 +/- 4.38 99.30 89.30 - 109.30 Pass SPW-3988 6/16/2006 Sr-89 52.40 +/- 4.23 58.16 46.53 - 69.79 Pass SPW-3988 6/16/2006 Sr-90 45.35 +/- 1.95 41.21 32.97 - 49.45 Pass SPMI-3990 6/16/2006 Cs-134 35.52 +/- 5.05 36.00 26.00 - 46.00 Pass SPMI-3990 6/16/2006 Cs-1 37 56.78 +/- 3.86 59.27 49.27 - 69.27 Pass SPMI-3990 6/16/2006 1-131(G) 95.04 +/- 5.05 99.30 89.30 - 109.30 Pass SPMI-3991 6/16/2006 1-131 96.55 +/- 0.87 99.30 79.44 - 119.16 Pass SPW-4356 7/5/2006 1-131 80.88 +/- 1.09 77.23 61.78 - 92.68 Pass W-90506 9/5/2006 Gr. Alpha 23.11 +/- 0.45 20.08 10.04 - 30.12 Pass W-90506 9/5/2006 Gr. Beta 65.01 +/- 0.51 65.73 55.73 - 75.73 Pass SPAP-6950 9/30/2006 Cs-1 34 28.93 +/- 1.56 32.65 22.65 - 42.65 Pass SPAP-6950 9/30/2006 Cs-1 37 116.62 +/- 2.97 117.75 105.98 - 129.53 Pass SPAP-6952 9/30/2006 Gr. Beta 52.96 +/- 0.14 53.50 42.80 - 74.90 Pass A3-1

TABLE A-3. In-House "Spike" Samples Concentration (pCi/L)

Lab Code Date Analysis Laboratory results Known Control 2s, n=lb Activity Limitsc Acceptance SPW-6954 9/30/2006 Cs-1 34 63.29 +/- 8.24 65.30 55.30 - 75.30 Pass SPW-6954 9/30/2006 Cs-137 60.41 1 7.53 58.87 48.87 - 68.87 Pass SPMI-6956 9/30/2006 Cs- 134 69.26 +/- 4.85 65.31 55.31 - 75.31 Pass SPMI-6956 9/30/2006 Cs-1 37 61.35 +/- 7.62 58.87 48.87 - 68.87 Pass W-120106 12/1/2006 Gr. Alpha 22.40 +/- 1.03 20.08 10.04 - 30.12 Pass W-120106 12/1/2006 Gr. Beta 63.70 +/- 1.14 65.73 55.73 - 75.73 Pass SPAP-9476 12/29/2006 Gr. Beta 57.51 +/- 0.14 53.16 42.53 - 74.42 Pass SPAP-9478 12/29/2006 Cs-134 26.84 +/- 1.23 30.06 20.06 - 40.06 Pass SPAP-9478 12/29/2006 Cs-137 110.54 +/- 3.12 117.10 105.39 - 128.81 Pass SPW-9480 12/29/2006 H-3 68972.20 +/- 748.00 72051.60 57641.28 - 86461.92 Pass SPW-9483 12/29/2006 Tc-99 29.43 +/- 0.84 32.98 20.98 - 44.98 Pass SPW-9488 12/29/2006 Cs-134 61.35 +/- 1.65 60.10 50.10 - 70.10 Pass SPW-9488 12/29/2006 Cs-1 37 60.30 +/- 2.76 56.80 46.80 - 66.80 Pass SPMI-9490 12/29/2006 Cs-134 58.99 +/- 5.43 60.10 50.10 - 70.10 Pass SPMI-9490 12/29/2006 Cs-1 37 54.16 +/- 7.85 56.80 46.80 -66.80 Pass SPF-9492 12/29/2006 Cs-134 0.64 +/- 0.01 0.60 0.36 -0.84 Pass SPF-9492 12/29/2006 Cs-1 37 2.61 +/- 0.03 2.34 1.40-3.28 Pass 3

a Liquid sample results are reported in pCi/Liter, air filters( pCi/filter), charcoal (pCi/mr ), and solid samples (pCi/g).

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

CH (charcoal canister), F (fish).

c Results are based on single determinations.

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

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

A3-2

TABLE A4. In-House "Blank" Samples Concentration (pCi/L)8 Lab Code Sample Date Analysisb Laboratory results (4. 6 6a) Acceptance Type LLD Activityc Criteria (4.66 c)

SPW-302 water 1/20/2006 Fe-55 1061 -91 +/- 637 1000 SPAP-1225 Air Filter 3/7/2006 Gr. Beta 1.16 -0.512 +/- 51.20 3.2 SPW-1231 water 3/7/2006 Cs-134 2.71 10 SPW-1231 water 3/712006 Cs-137 2.05 10 W-30906 water 3/9/2006 Gr. Alpha 0.037 0.005 +/- 0.026 1 W-30906 water 3/9/2006 Gr. Beta 0.076 -0.016 +/- 0.052 3.2 SPW-2751 water 4/27/2006 Ni-63 1.48 0.37 +/- 0.91 20 SPW-2868 water 5/1/2006 Fe-55 18.07 4.33 +/- 11.27 1000 SPW-2874 water 5/1/2006 H-3 166.00 -8.3 +/- 86.9 200 SPAP-2872 Air Filter 5/212006 Gr. Beta 1.18 -3.65 +/- 0.64 3.2 SPF-3154 Fish 5/1012006 Cs-134 16.4 100 SPF-3154 Fish 5/10/2006 Cs-137 13.7 100 SPW-3461 water 5/26/2006 C-14 10.20 -7.9 +/- 5.20 200 W-60606 water 6/6/2006 Gr. Alpha 0.05 0.013 +/- 0.037 1 W-60606 water 6/6/2006 Gr. Beta 0.16 -0.044 +/- 0.11 3.2 SPW-3989 water 6/16/2006 Cs-134 3.00 10 SPW-3989 water 6/16/2006 Cs-137 3.65 10 SPW-3989 water 6/16/2006 1-131 0.21 0.045 +/- 0.14 0.5 SPW-3989 water 6/16/2006 1-131(G) 8.34 20 SPW-3989 water 6/16/2006 Sr-89 0.54 0.005 +/- 0.45 5 SPW-3989 water 6/16/2006 Sr-90 0.58 -0.079 +/- 0.26 1 SPMI-3991 Milk 6/16/2006 Cs-1 34 4.42 10 SPMI-3991 Milk 6/16/2006 Cs-137 3.88 10 SPMI-3991 Milk 6/16/2006 1-131 0.28 -0.22 +/- 0.19 0.5 SPMI-3991 Milk 6/16/2006 1-131(G) 3.76 20 SPMI-3991 Milk 6/16/2006 Sr-89 0.61 -0.25 +/- 0.76 5 SPMI-3991 Milk 6/16/2006 Sr-90 0.52 0.88 +/- 0.34 1 W-90506 water 9/5/2006 Gr. Alpha 0.06 0.00 +/- 0.04 1 W-90506 water 9/5/2006 Gr. Beta 0.16 0.05 +/- 0.11 3.2 SPMI-6383 Milk 9/14/2006 Sr-89 0.97 -0.18 +/- 0.92 5 SPMI-6383 d Milk 9/1412006 Sr-90 0.57 0.65 +/- 0.33 1 SPAP-6949 Air Filter 9/30/2006 Cs-134 0.89 100 SPAP-6949 Air Filter 9/30/2006 Cs-1 37 0.91 100 SPAP-6951 Air Filter 9/30/2006 Gr. Beta 1.12 -0.54 +/- 0.64 3.2 SPW-6953 water 9/30/2006 Cs-134 3.91 10 SPW-6953 water 9/30/2006 Cs-137 5.61 10 SPW-6953 water 9/30/2006 Sr-89 0.79 -0.14 +/- 0.64 5 SPW-6953 water 9/30/2006 Sr-90 0.60 0.11 +/- 0.29 1 A4-1

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

SPMI-6955 Milk 9/30/2006 Cs-134 2.86 10 SPMI-6955 Milk 9/3012006 Cs-137 2.39 10 SPMI-6955 Milk 9/30/2006 1-131(G) 9.98 0.5 W-120106 water 12/1/2006 Gr. Alpha 0.11 0.066 +/- 0.072 1 W-120106 water 12/1/2006 Gr. Beta 0.30 0.093 +/- 0.16 3.2 SPAP-9477 Air Filter 12/29/2006 Gr. Beta 1.13 -0.37 +/- 0.66 3.2 SPAP-9479 Air Filter 12/2912006 Cs-1 37 0.87 100 SPW-9481 water 12/29/2006 H-3 146.2 63.2 +/- 80.1 200 SPW-9483 water 12/29/2006 Tc-99 0.95 -1.20 +/- 0.56 10 SPW-9489 water 12/29/2006 Cs-134 2.30 10 SPMI-9491 Milk 12/29/2006 Cs-134 3.10 10 SPMI-9491 Milk 12/29/2006 Cs-137 2.90 10 SPMI-9491 Milk 12/29/2006 1-131(G) 8.00 20 SPF-9493 Fish 12/29/2006 Cs-134 7.6 100 SPF-9493 Fish 12/29/2006 Cs-137 7.9 100 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.

r 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)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance AP-7466, 7467 1/3/2006 Be-7 0.053

• 0.015 0.057 +/- 0.011 0.055 +/- 0.009 Pass AP-7513, 7514 1/3/2006 Be-7 0.033 +/- 0.008 0.036 +/- 0.008 0.035 +/- 0.006 Pass AP-7555, 7556 1/3/2006 Be-7 0.053 +/- 0.007 0.054 +/- 0.008 0.053 +/- 0.005 Pass MI-154, 155 1/10/2006 K-40 1254.20 +/- 87.75 1369.60 +/- 102.80 1311.90 +/- 67.58 Pass MI-217, 218 1/11/2006 K-40 1258.00 +/- 118.00 1313.00 +/- 98.00 1285.50 +/- 76.69 Pass MI-217, 218 1/11/2006 Sr-90 1.27 +/- 0.37 0.92 +/- 0.33 1.10 +/- 0.25 Pass MI-287, 288 1/1712006 K-40 1383.10 +/- 110.90 1457.80 +/- 119.10 1420.45 +/- 81.37 Pass MI-287, 288 1/17/2006 Sr-90 0.74 +/- 0.38 0.94 +/- 0.37 0.84 +/- 0.27 Pass WW-314, 315 1/19/2006 Gr. Beta 9.21 +/- 1.72 11.52 +/- 1.93 10.37 +/- 1.29 Pass WW-314,315 1/19/2006 H-3 168.64 +/- 94.94 210.12 +/- 96.51 189.38 +/- 67.69 Pass SWT-577, 578 1/31/2006 Gr. Beta 3.06 +/- 0.66 3.68 +/- 0.64 3.37 +/- 0.46 Pass SWU-598, 599 1/31/2006 Gr. Beta 2.03 +/- 0.39 1.97 +/- 0.40 2.00 +/- 0.28 Pass SWU-598, 599 1/31/2006 H-3 260.10 +/- 98.20 134.10 +/- 93.50 197.10 +/- 67.80 Pass F-3311, 3 3 12 b 2/9/2006 Gr. Beta 4.12 +/- 0.14 3.82 +/- 0.13 3.97 +/- 0.10 Fail F-3311, 3312 2/9/2006 K-40 2.68 +/- 0.37 2.76 +/- 0.39 2.72 +/- 0.27 Pass SW-780, 781 2/14/2006 Gr. Alpha 4.09 +/- 1.52 3.22 +/- 1.37 3.66 +/- 1.03 Pass SW-780, 781 2/14/2006 Gr. Beta 5.91 +/- 0.90 5.89 +/- 0.92 5.90 +/- 0.64 Pass DW-934, 935 2/17/2006 1-131 0.35 +/- 0.22 0.31 +/- 0.25 0.33 +/- 0.16 Pass DW-1024, 1025 2/24/2006 1-131 0.24 +/- 0.26 6.53 +/- 0.24 0.39 +/- 0.18 Pass MI-1078, 1079 3/1/2006 Sr-90 1.42 +/- 0.39 1.30 +/- 0.62 1.36 +/- 0.37 Pass F-1357, 1358 3/10/2006 Gr. Beta 3.77 +/- 0.07 3.71 +/- 0.07 3.74 +/- 0.05 Pass F-1 357, 1358 3/10/2006 K-40 2.46 +/- 0.32 2.32 +/- 0.44 2.39 +/- 0.27 Pass MI-1469, 1470 3/14/2006 K-40 1396.30 +/- 120.80 1335.60 +/- 113.80 1365.95 +/- 82.98 Pass CF-1538, 1539 3/21/2006 K-40 13.66 +/- 0.81 13.97 +/- 0.68 13.81 +/- 0.53 Pass WW-1583, 1584 3/22/2006 Gr. Beta 7.66 +/- 0.73 8.87 +/- 0.75 8.26 +/- 0.52 Pass DW-1955, 1956 3/27/2006 Gr. Beta 2.25 +/- 0.60 3.15 +/- 0.59 2.70 +/- 0.42 Pass MI-1760, 1761 3/29/2006 K-40 1271.00 +/- 89.00 1378.00 +/- 113.00 1324.50 +/- 71.92 Pass AP-2603, 2604 3/29/2006 Be-7 0.067 +/- 0.015 0.056 +/- 0.010 0.062 +/- 0.009 Pass E-1997, 1998 4/312006 Gr. Beta 1.82 + 0.07 1.87 +/- 0.07 1.85 +/- 0.05 Pass 4/3/2006 E-1997, 1998 4/3/2006 K-40 1.28 +/- 0.15 1.24 +/- 0.21 1.26 +/- 0.13 Pass AP-2818, 2819 4/3/2006 Be-7 0.06 +/- 0.01 0.06 +/- 0.01 0.06 +/- 0.01 Pass SWU-2863, 2864 4/3/2006 Gr. Beta 3.20 +/- 1.26 4.77 +/- 1.30 3.99 +/- 0.91 Pass SS-2389, 2390 4/11/2006 Gr. Beta 10.53 +/- 0.96 9.38 +/- 0.84 9.96 +/- 0.64 Pass SS-2389, 2390 4/11/2006 K-40 5.51 +/- 0.42 5.79 +/- 0.40 5.65 +/- 0.29 Pass DW-2773, 2774 4/21/2006 1-131 0.74 +/- 0.23 0.53 +/- 0.40 0.63 +/- 0.23 Pass SL-2932, 2933 5/1/2006 Be-7 1.28 +/- 0.19 1.27 +/- 0.17 1.28 +/- 0.13 Pass SL-2932, 2933 5/1/2006 Gr. Beta 6.09 +/- 0.33 5.65 +/- 0.31 5.87 +/- 0.23 Pass SL-2932, 2933 5/1/2006 K-40 3.13 +/- 0.41 3.09 +/- 0.36 3.11 +/- 0.27 Pass BS-3103, 3104 5/1/2006 Gr. Beta 8.27 +/- 1.46 9.03 +/- 1.59 8.65 +/- 1.08 Pass BS-3103, 3104 5/1/2006 K-40 6288.20 +/- 585.20 5643.70 +/- 599.80 5965.95 +/- 418.99 Pass MI-3037, 3038 5/2/2006 K-40 1238.90 +/- 98.59 1301.00 +/- 103.90 1269.95 +/- 71.62 Pass MI-3037, 3038 5/2/2006 Sr-90 1.76 +/- 0.42 1.48 +/- 0.42 1.62 +/- 0.29 Pass A5-1

TABLE A-5. In-House "Duplicate" Samples Concentration (pCi/L)a Averaged Lab Code Date Analysis First Result Second Result Result Acceptance MI-3124, 3125 5/9/2006 K-40 1032.30 +/- 91.12 1103.60 +/- 120.50 1067.95 +/- 75.54 Pass SW-3145, 3146 5/9/2006 Gr. Alpha 4.85 +/- 1.68 4.12 +/- 1.62 4.48 +/- 1.17 Pass SW-3145, 3146 5/9/2006 Gr. Beta 8.94 +/- 1.46 9.14 +/- 1.36 9.04 +/- 1.00 Pass MI-3236, 3237 5/10/2006 K-40 1412.40 +/- 119.10 1427.90 +/- 127.70 1420.15 +/- 87.31 Pass F-3422, 3423 5/19/2006 H-3 8175.00 +/- 252.00 8268.00 +/- 253.00 8221.50 +/- 178.54 Pass G-3491, 3492 5/24/2006 Gr. Beta 8.89 +/- 0.18 9.03 +/-0.19 8.96 +/- 0.13 Pass G-3491, 3492 5/24/2006 K-40 5.60 +/- 0.71 6.30 +/- 0.78 5.95 +/- 0.53 Pass SO-3539, 3540 5/24/2006 Gr. Beta 19.57 +/- 1.99 18.98 +/- 1.91 19.27 +/- 1.38 Pass SO-3539, 3540 5/24/2006 K-40 12.55 +/- 0.89 11.49 +/- 0.59 12.02 +/- 0.53 Pass WW-3751, 3752 5/25/2006 Gr. Beta 9.85 +/- 0.79 8.96 +/- 0.74 9.41 +/- 0.54 Pass F-3617, 3618 5/30/2006 K-40 2.42 +/- 0.38 2.53 +/- 0.37 2.47 +/- 0.27 Pass SL-3641, 3642 6/1/2006 Be-7 1.41 +/- 0.19 1.31 +/- 0.27 1.36 +/-0.17 Pass SL-3641, 3642 6/1/2006 Gr. Beta 5.03 +/- 0.18 5.30 +/-0.19 5.17 +/-0.13 Pass SL-3641, 3642 6/1/2006 K-40 2.21 +/- 0.26 2.14 +/- 0.37 2.18 +/- 0.23 Pass MI-3886, 3887 6/12/2006 K-40 1424.20 +/- 118.20 1318.80 +/- 110.50 1371.50 +/- 80.90 Pass VE-3949, 3950 6/13/2006 Gr. Alpha 0.13 +/- 0.06 0.16 +/- 0.07 0.15 +/- 0.05 Pass VE-3949, 3950 6/13/2006 Gr. Beta 4.53 +/- 0.19 4.47 +/-0.18 4.50 +/-0.13 Pass VE-3949, 3950 6/13/2006 K-40 6.02 +/- 0.66 5.33 +/- 0.66 5.67 +/- 0.47 Pass BS-4016, 4017 6/13/2006 Co-60 0.18 +/- 0.03 0.15 +/- 0.03 0.16 +/- 0.02 Pass BS-4016, 4017 6/13/2006 Cs-1 37 1.97 +/- 0.09 2.01 +/- 0.09 1.99 +/- 0.06 Pass BS-4016, 4017 6/13/2006 K-40 11.03 +/- 0.76 10.45 +/- 0.78 10.74 +/- 0.54 Pass MI-3992, 3993 6/14/2006 K-40 1358.50 +/- 166.40 1395.80 +/- 122.70 1377.15 +/- 103.37 Pass LW-4175, 4176 6/16/2006 H-3 482.11 +/- 90.25 397.50 +/- 86.88 439.81 +/- 62.63 Pass W-4130, 4131 6/21/2006 H-3 401.50 +/- 87.85 236.28 +/- 80.89 318.89 +/- 59.71 Pass AV-4330, 4331 6/26/2006 K-40 1717.10 +/- 244.30 1893.10 +/- 223.30 1805.10 +/- 165.49 Pass SWU-4489, 4490 6/27/2006 Gr. Beta 1.70 +/- 0.38 1.93 +/- 0.38 1.82 +/- 0.27 Pass AP-4909, 4910 6/29/2006 Be-7 0.11 +/- 0.01 0.11 +/- 0.02 0.11 +/- 0.01 Pass AP-4952, 4953 6/29/2006 Be-7 0.08 +/- 0.02 0.10 +/- 0.02 0.09 +/- 0.01 Pass AP-4930, 4931 7/3/2006 Be-7 0.08 +/- 0.02 0.07 +/- 0.01 0.08 +/- 0.01 Pass E-4399, 4400 7/5/2006 Gr. Beta 1.85 +/- 0.05 1.85 +/- 0.05 1.85 +/- 0.04 Pass E-4399, 4400 7/5/2006 K-40 1.25 +/- 0.19 1.24 +/- 0.18 1.25 +/- 0.13 Pass G-4420, 4421 7/5/2006 Be-7 0.82 +/- 0.20 0.61 +/- 0.14 0.72 +/- 0.12 Pass G-4420, 4421 7/5/2006 Gr. Beta 13.20 +/- 0.40 14.00 +/- 0.40 13.60 +/- 0.28 Pass G-4420, 4421 7/5/2006 K-40 9.96 +/- 0.44 10.06 +/- 0.82 10.01 +/- 0.47 Pass DW-60432, 60433 7/6/2006 Gr. Alpha 3.24 +/- 1.35 2.49 +/- 1.33 2.87 +/- 0.95 Pass DW-60514, 60515 7/10/2006 Gr. Alpha 3.70 +/- 1.12 3.09 +/- 1.16 3.40 +/- 0.81 Pass DW-60449, 60450 7/11/2006 Gr. Alpha 6.87 +/- 1.26 4.77 +/- 1.09 5.82 +/- 0.83 Pass MI-4599, 4600 7/12/2006 K-40 1403.50 +/- 118.80 1330.40 +/- 116.50 1366.95 +/- 83.20 Pass MI-4599, 4600 7/12/2006 Sr-90 0.59 +/- 0.34 0.70 +/- 0.35 0.65 +/- 0.24 Pass MI-4667, 4668 7/12/2006 K-40 1286.60 +/- 92.62 1358.60 +/- 158.40 1322.60 +/- 91.75 Pass LW-4823, 4824 7/14/2006 Gr. Beta 1.75 +/- 0.60 2.51 +/- 0.59 2.13 +/- 0.42 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 DW-60502, 60503 7/19/2006 Gr. Alpha 16.27 +/- 2.49 21.41 +/- 3.21 18.84 +/- 2.03 Pass DW-60526, 60527 7/21/2006 Gr. Alpha 14.06 +/- 1.82 15.57 +/- 1.77 14.82 +/- 1.27 Pass DW-60539, 60540 7/21/2006 Gr. Alpha 5.09 +/- 0.95 6.23 +/- 1.05 5.66 +/- 0.71 Pass MI-5125, 5126 7/25/2006 K-40 1480.60 +/- 118.30 1402.60 +/- 120.80 1441.60 +/- 84.54 Pass DW-60609, 60610 7/26/2006 Gr. Alpha 1.00 +/- 1.10 2.70 +/- 1.30 1.85 +/- 0.85 Pass DW-60621, 60622 7/31/2006 Gr. Alpha 3.70 +/- 1.00 1.90 +/- 0.80 2.80 +/- 0.64 Pass SL-5265, 5266 8/1/2006 Be-7 1.10 +/- 0.46 1.38 +/- 0.52 1.24 +/- 0.35 Pass SL-5265, 5266 8/1/2006 Sr-90 0.10 +/- 0.03 0.16 +/- 0.03 0.13 +/- 0.02 Pass SL-5265, 5266 8/1/2006 Gr. Beta 4.41 +/- 0.41 3.46 +/- 0.57 3.94 +/- 0.35 Pass SL-5265, 5266 8/1/2006 K-40 1.19 +/- 0.52 0.87 +/- 0.52 1.03 +/- 0.37 Pass VE-5286, 5287 8/11/2006 Be-7 1.21 +/- 0.30 1.32 +/- 0.20 1.27 +/- 0.18 Pass VE-5286, 5287 8/112006 Gr. Beta 9.67 +/- 0.35 9.37 +/- 0.35 9.52 +/- 0.25 Pass VE-5286, 5287 8/1/2006 K-40 6.25 +/- 0.81 6.50 +/- 0.48 6.38 +/- 0.47 Pass SW-5383, 5384 8/8/2006 Gr. Alpha 3.24 +/- 1.35 2.94 +/- 1.35 3.09 +/- 0.96 Pass SW-5383, 5384 8/8/2006 Gr. Beta 4.86 +/- 0.86 5.46 +/- 0.87 5.16 +/- 0.61 Pass SW-5971, 5972 8/8/2006 H-3 119.90 +/- 78.14 144.41 +/- 79.23 132.15 +/- 55.64 Pass VE-5404, 5405 8/10/2006 Be-7 0.77 +/- 0.24 1.01 +/- 0.26 0.89 +/- 0.18 Pass VE-5404, 5405 8/10/2006 K-40 4.71 +/- 0.63 4.01 +/- 0.58 4.36 +/- 0.43 Pass DW-5480, 5481 8/11/2006 H-3 169.08 +/- 85.52 133.65 +/- 83.96 151.36 +/- 59.92 Pass DW-60645, 60646 8/15/2006 Gr. Alpha 10.41 +/- 1.78 10.97 +/- 1.85 10.69 +/- 1.28 Pass W-5602, 5603 8/16/2006 H-3 2118.79 +/- 151.55 2181.82 +/- 153.09 2150.30 +/- 107.71 Pass DW-60634, 60635 8/18/2006 Gr. Alpha 12.99 +/- 1.84 9.67 +/- 1.61 11.33 +/- 1.22 Pass DW-60634, 60635 8/18/2006 Gr. Beta 10.51 +/- 1.33 8.61 +/- 1.18 9.56 +/- 0.89 Pass MI-5793, 5794 8/22/2006 K-40 1264.00 +/- 115.00 1377.00 +/- 121.00 1320.50 +/- 83.47 Pass SWU-6150, 6151 8/29/2006 Gr. Beta 1.84 +/- 0.28 1.81 +/- 0.28 1.82 +/- 0.20 Pass DW-60657, 60658 8/29/2006 Gr. Alpha 2.33 +/- 0.80 2.90 +/- 0.78 2.62 +/- 0.56 Pass CF-7450, 7451 9/5/2006 Be-7 0.78 +/- 0.45 0.78 +/- 0.27 0.78 +/- 0.26 Pass SL-6085, 6086 9/5/2006 Co-60 0.22 +/- 0.03 0.21 +/- 0.02 0.22 +/- 0.02 Pass SL-6085, 6086 9/5/2006 Gr. Beta 5.47 +/- 0.69 4.63 +/- 0.58 5.05 +/- 0.45 Pass SL-6085, 6086 9/5/2006 K-40 1.91 +/- 0.28 2.06 +/- 0.41 1.99 +/- 0.25 Pass DW-60695, 60696 9/11/2006 Gr. Alpha 3.93 +/- 1.17 4.62 +/- 1.12 4.28 +/- 0.81 Pass LW-6266, 6267 9/13/2006 Gr. Beta 3.09 +/- 0.48 2.98 +/- 0.48 3.03 +/- 0.34 Pass MI-6424, 6425 9/19/2006 Sr-90 0.78 +/- 0.38 1.11 +/-0.37 0.95 +/- 0.27 Pass DW-60715, 60716 9/19/2006 Gr. Alpha 1.30 +/- 1.00 2.23 +/- 1.01 1.77 +/- 0.71 Pass SO-6597, 6598 9/22/2006 Cs-137 0.18 +/- 0.04 0.18 +/- 0.04 0.18 +/- 0.03 Pass SO-6597, 6598 9/22/2006 K-40 10.25 +/- 0.66 10.11 +/- 0.64 10.18 +/- 0.46 Pass SWU-6718, 6719 9/26/2006 Gr. Beta 3.45 +/- 1.21 2.78 +/- 1.19 3.12 +/- 0.85 Pass SO-6668, 6669 9/27/2006 Cs-137 0.13 +/- 0.04 0.13 +/- 0.02 0.13 +/- 0.02 Pass SO-6668, 6669 9/27/2006 K-40 13.04 +/- 0.90 12.41 +/- 0.54 12.72 +/- 0.53 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 MI-6760, 6761 10/2/2006 K-40 1413.10 +/- 113.20 1187.30 +/- 155.20 1300.20 +/- 96.05 Pass G-6797, 6798 1012/2006 Be-7 4.70 +/- 0.31 4.56 +/- 0.41 4.63 +/- 0.26 Pass G-6797, 6798 10/2/2006 Gr. Beta 6.89 +/- 0.26 7.04 +/- 0.24 6.97 +/- 0.18 Pass G-6797, 6798 b 10/2/2006 K-40 5.39 +/- 0.35 4.36 +/- 0.47 4.88 +/- 0.29 Fail AP-7531, 7532 10/3/2006 Be-7 0.07 +/- 0.01 0.08 +/- 0.01 0.08 +/- 0.01 Pass AP-7552, 7553 10/3/2006 Be-7 0.08 +/- 0.02 0.08 +/- 0.01 0.08 +/- 0.01 Pass AP-7573, 7574 10/3/2006 Be-7 0.08 +/- 0.02 0.08 +/- 0.01 0.08 +/- 0.01 Pass SO-7103, 7104 10/4/2006 Cs-137 0.25 +/- 0.05 0.27 +/- 0.06 0.26 +/- 0.04 Pass SO-7103, 7104 10/4/2006 K-40 12.95 +/- 1.12 12.22 +/- 1.07 12.58 +/- 0.77 Pass DW-60759, 60760 10/5/2006 Gr. Alpha 4.93 +/- 0.97 5.04 +/- 1.03 4.99 +/- 0.71 Pass MI-7037, 7038 10/10/2006 K-40 1326.10 +/- 115.20 1251.40 +/- 115.70 1288.75 +/- 81.64 Pass VE-7058, 7059 10/10/2006 Gr. Alpha 0.18 +/- 0.11 .0.32 +/- 0.14 0.25 +/- 0.09 Pass VE-7058, 7059 10/10/2006 Gr. Beta 9.21 +/- 0.34 8.83 +/- 0.36 9.02 +/- 0.25 Pass VE-7058, 7059 10/10/2006 K-40 10.90 +/- 0.65 10.42 +/- 0.80 10.66 +/- 0.52 Pass SS-7079, 7080 10/1012006 Cs-1 37 0.04 +/- 0.01 0.04 +/- 0.02 0.04 +/- 0.01 Pass SS-7079, 7080 10/1012006 Gr. Beta 12.23 +/- 2.46 11.76 +/- 2.23 11.99 +/- 1.66 Pass SS-7079, 7080 10/10/2006 K-40 7.23 +/- 0.36 7.37 +/- 0.40 7.30 +/- 0.27 Pass MI-7208, 7209 10/11/2006 K-40 1295.20 +/- 116.90 1386.90 +/- 119.10 1341.05 +/- 83.44 Pass CF-7450, 7451 10/18/2006 K-40 20.40 +/- 0.84 19.54 +/- 0.99 19.97 +/- 0.65 Pass LW-7945, 7946 10/26/2006 Gr. Beta 1.30 + 0.37 1.44 +/- 0.36 1.37 +/- 0.26 Pass F-7971, 7972 10/29/2006 K-40 3.63 + 0.54 3.33 +/- 0.43 3.48 +/- 0.34 Pass SWU-8194, 8195 10/31/2006 Gr. Beta 1.84 +/-0.28 1.43 +/- 0.28 1.64 +/- 0.20 Pass BS-8017, 8018 11/1/2006 Gr. Beta 10.54 +/- 1.72 10.17 +/- 1.73 10.36 +/- 1.22 Pass BS-8017, 8018 11/1/2006 K-40 10.00 +/- 0.53 9.60 +/- 0.69 9.80 +/- 0.44 Pass LW-8215, 8216 11/1/2006 Gr. Beta 2.23 +/- 0.61 1.64 +/- 0.37 1.93 +/- 0.35 Pass F-8345, 8346 11/2/2006 K-40 2.84 +/- 0.42 2.89 +/- 0.40 2.86 +/- 0.29 Pass BS-8366, 8367 11/2/2006 K-40 13.69 +/- 0.66 13.61 +/- 0.78 13.65 +/- 0.51 Pass MI-8083, 8084 11/6/2006 K-40 1295.00 +/- 121.20 1374.80 +/- 162.80 1334.90 +/- 101.48 Pass WW-8259, 8260 11/7/2006 H-3 337.00 +/- 95.00 295.00 +/- 93.00 316.00 +/- 66.47 Pass MI-8484, 8485 11/22/2006 K-40 1405.80 +/- 87.06 1390.70 +/- 103.60 1398.25 +/- 67.66 Pass SO-8619, 8620 11/27/2006 Cs-137 0.74 +/- 0.08 0.69 +/- 0.06 0.71 +/- 0.05 Pass SO-8619, 8620 11/27/2006 Gr. Alpha 16.54 +/- 5.65 12.24 +/- 4.90 14.39 +/- 3.74 Pass SO-8619, 8620 11/27/2006 Gr. Beta 24.99 +/- 3.88 28.66 +/- 3.95 26.82 +/- 2.77 Pass SO-8619, 8620 11/27/2006 K-40 12.21 +/- 1.11 12.92 +/- 0.83 12.57 +/- 0.69 Pass SWT-8641, 8642 11/29/2006 Gr. Beta 2.83 +/- 0.47 2.89 +/- 0.45 2.86 +/- 0.33 Pass SWT-9436, 9437 12/26/2006 Gr. Beta 2.39 +/-0.64 2.25 +/- 0.60 2.32 +/- 0.44 Pass Note: Duplicate analyses are performed on every twentieth sample received in-house. Results are not listed for those analyses with activities that measure below the LLD.

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

b 200 minute count time or longer, resulting in lower error.

A5-4

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STVE-1 082 01/01/06 Am-241 0.16 +/- 0.06 0.16 0.11 -0.20 Pass STVE-1 082 01/01/06 Co-57 10.40 +/- 0.20 8.58 6.00- 11.15 Pass STVE-1 082 01/01/06 Co-60 5.00 + 0.20 4.52 3.16 - 5.88 Pass STVE-1 082 01/01/06 Cs-1 34 < 0.20 0.00 Pass STVE-1082 01/01/06 Cs-1 37 3.40 +/- 0.20 3.07 2.15 -4.00 Pass STVE-1 082 01/01/06 Mn-54 6.90 +/- 0.20 6.25 4.37 - 8.12 Pass STVE-1082 01/01/06 Pu-238 0.08 +/- 0.03 0.14 0.10 -0.18 'Fail STVE-1082 01/01/06 Pu-239/40 0.17 +/- 0.03 0.16 0.11 -0.21 Pass STVE-1 082 01/01/06 Sr-90 1.40 +/- 0.20 1.56 1.09 -2.03 Pass STVE-1 082 01/01/06 U-233/4 0.24 +/- 0.05 0.21 0.15 -0.27 Pass STVE-1 082 01/01/06 U-238 0.19 +/- 0.04 0.22 0.15 -0.28 Pass STVE-1082 01/01/06 Zn-65 11.10 +/-0.50 9.80 6.86 - 12.74 Pass STSO-1083 01/01/06 Am-241 54.60 + 5.50 57.08 39.96 - 74.20 Pass STSO-1 083 01/01/06 Co-57 762.90 +/- 12.70 656.29 459.40 - 853.18 Pass STSO-1 083 01/01/06 Co-60 504.90 +/- 3.10 447.10 312.97 - 581.23 Pass STSO-1083 0 01/01/06 Cs-1 34 < 1.70 0.00 Pass STSO-1083 01/01/06 Cs-1 37 406.50 + 3.70 339.69 237.78 - 441.60 Pass STSO-1083 01/01/06 K-40 719.20 +/- 18.40 604.00 422.80 - 785.20 Pass STSO-1083 01/01/06 Mn-54 415.60 +/- 4.80 346.77 242.74 - 450.80 Pass STSO-1083 01/01/06 Ni-63 261.40 +/- 14.70 323.51 226.46 - 420.56 Pass STSO-1083 01/01/06 Pu-238 14.60 +/- 2.90 61.15 42.81 - 79.50 Fail STSO-1 083 01/01/06 Pu-239/40 14.60 +/- 2.40 45.85 32.09 - 59.61 Fail STSO-1083 01/01/06 U-233/4 13.50 +/- 1.70 37.00 25.90 - 48.10 Fail STSO-1083 01/01/06 U-238 15.40 +/- 1.80 38.85 27.20 - 50.50 Fail STSO-1083 01/01/06 Zn-65 783.40 +/- 7.00 657.36 460.15 - 854.57 Pass STAP-1084 01/01/06 Gr. Alpha 0.26 +/- 0.02 0.36 0.00 - 0.72 Pass STAP-1084 01/01/06 Gr. Beta 0.51 +/- 0.03 0.48 0.24 - 0.72 Pass STAP-1 085 01/01/06 Am-241 0.12 +/- 0.02 0.09 0.07 -0.12 Pass STAP-1 085 01/01/06 Co-57 4.32 +/- 0.10 4.10 2.87 - 5.32 Pass STAP-1 085 01/01/06 Co-60 2.24 +/- 0.16 2.19 1.53 -2.84 Pass STAP-1085 01/01/06 Cs-134 2.96 +/- 0.19 2.93 2.05 -3.81 Pass STAP-1 085 01/01/06 Cs-1 37 2.64 +/- 0.20 2.53 1.77 -3.29 Pass STAP-1085' 01/01/06 Pu-238 0.03 +/- 0.01 0.07 0.05 - 0.09 Fail STAP-1085 01/01/06 Pu-239/40 < 0.01 0.00 Pass STAP-1 085 01/01/06 Sr-90 0.77 +/- 0.21 0.79 0.55 -1.03 Pass STAP-1 085 01/01/06 U-233/4 0.03 +/- 0.01 0.02 0.01 - 0.03 Pass STAP-1085 01/01/06 U-238 0.02 +/- 0.01 0.02 0.01 - 0.03 Pass STAP-1 085 01/01/06 Zn-65 3.94 +/- 0.44 3.42 2.40 - 4.45 Pass A6-1

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STW-1 086 01/01/06 Am-241 1.29 +/- 0.05 1.30 0.91 -1.69 Pass STW-1086 01/01/06 Co-57 177.10 +/- 1.00 166.12 116.28 - 215.96 Pass STW-1086 01101/06 Co-60 158.30 +/- 1.00 153.50 107.45 - 199.55 Pass STW-1086 01/01/06 Cs-1 34 96.40 +/- 1.50 95.10 66.57 - 123.63 Pass STW-1086 01/01/06 Cs-1 37 < 0.80 0.00 Pass STW-1086 01/01/06 Fe-55 102.50 +/- 18.10 129.60 90.72 - 168.48 Pass STW-1086 01/01/06 H-3 956.60 +/- 16.50 952.01 666.41 - 1238.00 Pass STW-1086 01/01/06 Mn-54 335.30 +/- 2.20 315.00 220.50 - 409.50 Pass STW-1086 01/01/06 Ni-63 62.90 +/- 3.60 60.34 42.24 - 78.44 Pass STW-1086 01/01/06 Pu-238 0.96 +/- 0.07 0.91 0.70 - 1.30 Pass STW-1086 e 01/01/06 Pu-239/40 < 0.20 0.00 Pass STW-1086 01/01/06 Sr-90 12.80 +/- 1.60 13.16 9.21 -17.11 Pass STW-1086 01/01/06 Tc-99 22.30 +/- 1.20 23.38 16.37 - 30.39 Pass STW-1 086 01/01/06 U-233/4 2.02 + 0.12 2.09 1.46 -2.72 Pass STW-1086 01/01/06 U-238 2.03 +/-0.12 2.17 1.52 -2.82 Pass STW-1086 01/01/06 Zn-65 249.50 +/- 3.40 228.16 159.71 - 296.61 Pass STW-1087 01/01/06 Gr. Alpha 0.59 +/- 0.10 0.58 0.00 -1.16 Pass STW-1087 01/01/06 Gr. Beta 1.69 +/- 0.07 1.13 0.56-1.70 Pass STVE-1 098 07/01/06 Co-57 <0.14 0.00 Pass STVE-1 098 07/01/06 Co-60 6.89 +/- 0.17 5.81 4.06 - 7.55 Pass STVE-1098 07/01/06 Cs-I 34 8.46 +/- 0.16 7.49 5.24 - 9.73 Pass STVE-1098 07/01/06 Cs-1 37 6.87 +/- 0.29 5.50 3.85 - 7.14 Pass STVE-1098 07/01/06 Mn-54 10.36 +/- 0.29 8.35 5.85 -10.86 Pass STVE-1098 07/01/06 Zn-65 7.46 +/- 0.50 5.98 4.19 -7.78 Pass STSO-1 099 07/01/06 Am-241 130.00 +/- 11.60 105.47 73.83 - 137.11 Pass STSO-1099 07/01/06 Co-57 784.90 +/- 3.80 676.33 473.43 - 879.23 Pass STSO-1099 07/01/06 Co-60 2.10 +/- 0.90 1.98 0.00 - 5.00 Pass STSO-1 099 07/01/06 Cs-134 500.70 +/- 7.40 452.13 316.49 - 587.77 Pass STSO-1 099 07/01/06 Cs-137 624.20 +/- 4.90 525.73 368.01 - 683.45 Pass STSO-1 099 07/01/06 K-40 701.30 +/- 3.40 604.00 423.00 - 785.00 Pass STSO-1 099 07/01/06 Mn-54 699.20 +/- 5.20 594.25 415.98 - 772.52 Pass STSO-1099 07/01/06 Ni-63 614.40 +/- 17.10 672.30 470.60 - 874.00 Pass STSO-1099 07/01/06 Pu-238 79.90 +/- 5.80 82.00 57.00 - 107.00 Pass STSO-1 099 e 07/01/06 Pu-239/40 < 0.70 0.00 Pass STSO-1 099 07/01/06 U-233/4 150.50 +/- 5.90 152.44 106.71 - 198.17 Pass STSO-1099 07/01/06 U-238 151.60 +/- 6.00 158.73 111.11 - 206.35 Pass STSO-1 099 07/01/06 Zn-65 1021.90 +/- 9.20 903.61 632.53 - 1175.00 Pass STAP-1 100 07/01/06 Am-241 0.16 +/- 0.03 0.14 0.10 -0.19 Pass STAP-1 100 07/01/06 Co-57 2.17 +/- 0.06 2.58 1.81 -3.36 Pass STAP-1 100 07/01/06 Co-60 1.38 +/- 0.07 1.58 1.10 -2.05 Pass STAP-1100 07/01/06 Cs-134 2.52 +/- 0.13 3.15 2.20 -4.09 Pass A6-2

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

Concentration b Known Control Lab Codec Date Analysis Laboratory result Activity Limits d Acceptance STAP-1100 07/01/06 Cs-137 1.64 +/- 0.08 1.81 1.26 -2.35 Pass STAP-1100 07/01/06 Mn-54 1.76 +/- 0.18 1.92 1.34 .2.50 Pass STAP-1100 07/01/06 Pu-238 0.09 +/- 0.02 0.12 0.08 -0.15 Pass STAP-1100 07/01/06 Sr-90 0.66 +/- 0.21 0.62 0.43 -0.81 Pass STAP-1100 07/01/06 U-233/4 0.15 +/- 0.02 0.13 0.09 -0.17 Pass STAP-1100 07/01/06 U-238 0.13 +/- 0.02 0.14 0.10 -0.18 Pass STAP-1100 e 07/01/06 Zn-65 <50.07 0.00 Pass STAP-1101 07/01/06 Gr. Alpha 0.08 +/- 0.03 0.29 0.00 - 0.58 Pass STAP-1101 07/01/06 Gr. Beta 0.41 +/- 0.05 0.36 0.18 -0.54 Pass STW-1102 07/01/06 Gr. Alpha 0.76 +/- 0.07 1.03 0.00-2.07 Pass STW-1102 07/01/06 Gr. Beta 1.23 +/- 0.06 1.03 0.52 - 1.54 Pass STW-1103 07/01/06 Am-241 1.86 +/- 0.09 2.31 1.62 - 3.00 Pass STW-1103 07/01/06 Co-57 224.10 +/- 1.20 213.08 149.16 - 277.00 Pass STW-1103 07/01/06 Co-60 49.40 +/- 0.50 47.50 33.20 - 61.80 Pass STW-1103 07/01/06 Cs-134 112.70 +/- 0.90 112.82 78.97 - 146.66 Pass STW-1103 07/01/06 Cs-137 206.60 +/- 1.40 196.14 137.30 - 254.98 Pass STW-1103 07/01/06 Fe-55 138.40 +/- 5.40 165.40 115.80 - 215.00 Pass STW-1103 07/01/06 H-3 446.50 +/- 11.80 428.85 300.20 - 557.50 Pass STW-1103 07/01/06 Mn-54 < 0.30 0.00 Pass STW-1103 07/01/06 Ni-63 116.70 +/- 3.60 118.62 83.03 - 154.21 Pass STW-1103 07/01/06 Pu-238 1.27 +/- 0.07 1.39 0.97 - 1.81 Pass STW-1103 07/01/06 Pu-239/40 1.67 +/- 0.08 1.94 1.36 -2.52 Pass STW-1103 07/01/06 Sr-90 16.40 +/- 1.90 15.69 10.98 - 20.40 Pass STW-1103 07/01/06 Tc-99 29.40 +/- 1.10 27.15 19.00 - 35.29 Pass STW-1103 07/01/06 U-233/4 1.97 +/- 0.08 2.15 1.50 -2.80 Pass STW-1103 07/01/06 U-238 1.97 +/- 0.08 2.22 1.55 -2.89 Pass STW-1103 07/01/06 Zn-65 192.50 +/- 2.40 176.37 123.46 - 229.28 Pass B 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 Included in the MAPEP as a false positive.

f Difficulties with the analyses for transuranics isotopes in solid samples (Filters, Soil and vegetation),

were attributed to incomplete dissolution of the samples. Soil samples were repeated, results of reanalyses:

Pu-238, 53.1

• 5.3 bq/kg. Pu-239/240, 42.4 +/- 4.7 bq/kg. U-233/4, 33.3 +/- 3.5 bq/kg. U-238, 35.5 +/- 3.6 bq/kg.

9 The July vegetation sample was provided in two separate geometries, (100 ml. and 500 ml.). Results reported here used the 500 ml. standard size geometry. Results for the 100 ml. geometry showed approximately a 15% higher bias.

A6-3

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 2006 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 0.029 (265/265) TIE: 18 0.029 (53/53) 0.028 (53/53) 0 (0.014-0.059) 3.0 miles SSE (0.015-0.059) (0.012-0.049)

TIE: 37 0.029 (53/53) 2.0 miles NNW (0.019-0.057)

Gamma (24)

Be-7 - 0.080 (20/20) 37 0.088 (4/4) 0.080 (4/4) 0 (0.058-0.113) 2.0 miles NNW (0.064-0.112) (0.054-0.107) 1-131 (318) 0.07 -(0/265) N/A N/A -(0/53) 0 External Stations 39 & 48 Radiation (mR/day) TLD (376) 0.202 (360/360) 22 0.233 (8/8) 0.192 (16/16) 0 (0.118-0.257) 3.9 miles SSW (0.215-0.243) (0.169-0.217)

Surface Water JRR (pCi/I) Gamma (24) -(0/12) N/A N/A -(0/12) 0 Tritium (24) 3000 11286 (12/12) SP 11286 (12/12) -(0/12) 0 (8624-14267) 3.2 miles SSE (8624-14267)

B-12 Ground Water (pCi/I) 1-131 (32) 1 -(0/28) N/A N/A -(0/4) 0 Gamma (32) -(0/28) N/A N/A -(0/4) 0 Tritium (32) 2000 -(0/28) N/A N/A -(0/4) 0 Page B-2

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

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Name of Facility: Wolf Creek Generating Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2006 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 (29) 1 -(0-17) N/A N/A -(0/12) 0 (pCi/I)

Gross Beta (29) 4 3.9 (17/17) 1O-DW 3.9 (12/12) 4.0 (12/12) 0 (2.2-7.7) 26.1 miles SSE (2.4-7.7) (2.5-6.5)

Gamma (29) -(0/17) N/A N/A -(0/12) 0 Tritium (10) 2000 -(0/6) N/A N/A -(0/4) 0 Shoreline Gamma (4) JRR Sediment (pCi/kg dry) K-40 11822.0 (2/2) DC 11822.0 (2/2) 9207.6 (2/2) 0 (11521-12123) 0.8 miles WNW (11521-12123) (7107-11308)

Fish Gamma (16) JRR (pCi/kg wet)

K-40 3503 (10/10) CCL 3503 (10/10) 3433.7 (6/6) 0 (2957.9-3939.0) 0.6 miles (2957.9-3939.0) (3210.4-3867.3)

Tritium (16) 9471.9 (10/10) CCL 9471.9 (10/10) -(0/6) 0 (5733-14745) 0.6 miles (5733-14745)

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 Generatinq Station Docket No.: 50-482 Location of Facility: Coffey County, Kansas Reporting Period: Annual 2006 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Food and Gamma (17) D-1 & D-2 Garden (pCi/kg wet) Be-7 642.4 (7/9) N-1 708.1 (6/7) 666.8 (7/8) 0 (247.9-1261.1) 2.4 miles W (425.2-1261.1) (249.6-1831.3)

K-40 4843.6 (9/9) N-1 4848.2 (7/7) 4557.9 (8/8) 0 (3564.7-6090.1) 2.4 miles W (3990.5-6072.4) (3009.4-6906.4)

NR-U1 Crops Gamma (5)

(pCi/kg wet)

K-40 13627.6 (3/3) NR-D1 18112.0 (1/1) 8610.1 (2/2) 0 (2372-20398) 8.9 miles S (2524.1-14696.0)

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

K-40 12233.3 (4/4) DC 13682.0 (2/2) 19574.0 (2/2) 0 (8695-14040) 0.9 miles WNW (13324-14040) (17323-21825)

Co-60 123.2 (2/4) DC 123.2 (2/2) -(0/2) 0 (107.3-139.1) 0.9 miles WNW (107.3-139.1)

Cs-137 170.1 (3/4) DC 206.7 (2/2) 152.7 (2/2) 0 (96.9-224.1) 0.9 miles WNW (189.3-224.1) (140.5-164.8)

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 2006 Medium of ODCM All Indicator Indicator Location with Control Locations Pathway Analysis and Lower Locations Highest Annual Mean Number of Sampled Total Number of Limit of Name Nonroutine (Unit of Analysis Performed Detection ** Mean (f) Distance and ** Mean (f) ** Mean (f) Reported Measurement) (LLD) ** Range Direction ** Range ** Range Measurements **

Aquatic Gamma (3) No Control Vegetation (pCi/kg wet) Be-7 377.1 (3/3) EEA 653.6 (1/1) 0 (224.8-653.6) 3.0 miles NNW K-40 2234.2 (3/3) MUDS 2540.2 (2/2) 0 (1622.3-3363.2) 1.5 miles WNW (1717.1-3363.2)

Terrestrial Gamma (2) No Control Vegetation (pCi/kg wet) Be-7 711.0 (2/2) MUDS 1064.9 (1/1) 0 (357.1-1064.9) 1.5 miles WNW K-40 6876.8 (2/2) EEA 7484.2 (1/1)

(6269.3-7484.2) 3.0 miles NNW Soil Gamma (2) No Control (pCi/kg dry)

K-40 11840.5 (2/2) EEA 13180 (1/1) 0 (10501-13180) 3.0 miles NNW Deer Gamma (1) No Control (pCi/kg wet)

K-40 2860.5 (1/1) A.8 2860.5 (1/1) 0 0.8 miles N Page B-5

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

Air Particulate and Charcoal Filters Location: 002 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date m3 (pCi/m 3 ) (pCi/m 3 ) Analysis 28-DEC-05 05-JAN-06 347 0.028+/- 0.004 < 0.008 28-DEC-05 05-JAN-06 347 0.030+/- 0.004 Duplicate 05-JAN- 06 11-JAN-06 265 0.033+/- 0.005 0.022 11-JAN- 06 18-JAN-06 303 0.027+/- 0.004 0.013 18 -JAN- 06 25-JAN-06 307 0.023+/- 0.004 0.011 25 -JAN- 06 01-FEB-06 312 0.018+/- 0 .003 0.013 25-JAN-06 01-FEB-06 312 0.020+/- 0.003 Duplicate 01-FEB-06 08-FEB-06 313 0.024+/- 0.004 0.010 08-FEB-06 15-FEB-06 301 0.027+/- 0 .004 0.015 15-FEB-06 22-FEB-06 311 0.031+/- 0.004 0.012 22-FEB-06 01-MAR-06 305 0.035+/- 0.004 0.011 01-MAR-06 08-MAR-06 296 0.034+/- 0.004 0.016 08-MAR-06 14-MAR-06 273 0.028+/- 0.004 0.018 14-MAR-06 23-MAR-06 390 0.017+/- 0.003 0. 012 23 -MAR- 06 29-MAR- 06 255 0.022+/- 0.004 0.018 29-MAR- 06 05-APR-06 295 0.018+/- 0.003 0.015 05 -APR- 06 12-APR-06 309 0.026+/- 0.004 0.008 12-APR-06 19-APR-06 307 0.027+/- 0.004 0.016 19-APR-06 27-APR-06 350 0.020+/- 0.003 0.014 27-APR-06 03 -MAY-06 265 0.019+/- 0.004 0.016 03 -MAY-06 10-MAY-06 303 0.017+!- 0.003 0.016 10 -MAY- 06 17-MAY-06 294 0.015+/- 0.003 0.014 17-MAY- 06 24 -MAY-06 277 0.028+/- 0.004 0.008 24 -MAY- 06 31-MAY-06 275 0.024+/- 0.004 0.007 31-MAY- 06 07-JUN-06 277 0.031+/- 0.004 0.007 07-JUN-06 14 -JUN- 06 297 0.029+/- 0.004 0.011 14 -JUN- 06 21 -JUN-06 302 0. 026+/- 0.004 0.013 14 -JUN-06 21-JUN-06 302 0.029+/- 0. 004 Duplicate 21-JUN-06 28-JUN-06 302 0. 025+/- 0.004 < 0.016 21-JUN- 06 28 -JUN-06 302 0.020+/- 0.004 Duplicate 28-JUN-06 05-JUL-06 311 0.030+/- 0.004 0.015 05 -JUL- 06 12-JUL-06 300 0.029+/- 0.004 0.009 12-JUL-06 19-JUL-06 311 0.030+/- 0.004 0.018 12-JUL-06 19-JUL-06 311 0.024+/- 0.004 Duplicate 19-JUL- 06 27-JUL-06 351 0.032+/- 0.004 0.015 27-JUL-06 02 -AUG- 06 252 0.020+/- 0.004 0.010 02-AUG- 06 09-AUG-06 301 0.027+/- 0.004 0.009 09-AUG-06 16-AUG-06 302 0.023+/- 0 .004 0.005 16 -AUG- 06 24-AUG-06 346 0.038+/- 0 .004 0.011 24 -AUG- 06 30 -AUG- 06 259 0.031+/- 0.005 0.014 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 1

Air Particulate and Charcoal Filters Location: 002 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date m3 (pCi/rm3 ) (pCi/m 3 ) Analysis 30-AUG-06 06-SEP-06 302 0.029+/- 0.004 0.021 06-SEP-06 13-SEP-06 297 0.038+/- 0.004 0.011 13-SEP-06 20-SEP-06 306 0.024+/- 0. 004 0.011 20-SEP-06 27-SEP-06 293 0.026+/- 0.004 0.016 27-SEP-06 03-OCT-06 261 0.028+/- 0.005 0.014 03-OCT-06 11-OCT-06 333 0.035+/- 0.004 0.013 11-OCT-06 18-OCT-06 311 0.025+/- 0.004 0.007 18-OCT-06 25-OCT-06 283 0.030+/- 0.004 0.008 18-OCT-06 25-OCT-06 283 0.027+/- 0. 004 Duplicate 25-OCT-06 01-NOV-06 311 0.024+/- 0.004 0.018 01 -NOV- 06 08-NOV-06 294 0.038+/- 0.005 0.020 08-NOV-06 16 -NOV- 06 347 0.048+/- 0 .004 0.016 16-NOV-06 22-NOV-06 259 0.044 +/- 0.005 0.029 22 -NOV- 06 01-DEC-06 403 0.040+/- 0. 004 0.014 01-DEC-06 05-DEC-06 182 0.053+/- 0.007 0.024 05-DEC-06 13-DEC-06 352 0.038+/- 0. 004 0.012 13-DEC-06 20-DEC-06 318 0.036+/- 0.004 0.014 20-DEC-06 27-DEC-06 319 0.023+/- 0.004 0.017 27-DEC-06 04 - JAN- 07 353 0.022+/- 0.003 0.016 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 2

Air Particulate and Charcoal Filters Location: 018 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date ým 3 (pCi/m 3 ) (pCi/m 3 ) Analysis 28-DEC-05 05-JAN-06 365 0.028+/- 0.004 0.008 05-JAN-06 11-JAN-06 265 0.036+/- 0.005 0.022 11-JAN- 06 18-JAN-06 300 0.027+/- 0.004 0.014 18-JAN-06 25-JAN-06 300 0.024+/- 0.004 0.011 25-JAN-06 01-FEB-06 300 0.020+/- 0. 004 0.013 01-FEB-06 08-FEB-06 307 0.021+/- 0.004 0.010 08-FEB-06 15-FEB-06 294 0.027+/- 0.004 0.015 15-FEB-06 22-FEB-06 305 0.034+/- 0.004 0.012 22-FEB-06 01-MAR- 06 298 0.037+/- 0.004 0.011 01-MAR-06 08- MAR- 06 294 0.038+/- 0.004 0.016 08-MAR- 06 14 -MAR- 06 271 0.033+/- 0.004 0.019 14 -MAR- 06 23-MAR- 06 383 0.020+/- 0. 003 0.012 23 -MAR- 06 29-MAR- 06 248 0.022+/- 0.004 0.019 29-MAR-06 05-APR-06 286 0.023+/- 0.004 0.015 05-APR-06 12-APR-06 304 0.029+/- 0 .004 0.008 12-APR-06 19-APR-06 291 0.027+/- 0.004 0.017 19-APR-06 27-APR-06 348 0.025+/- 0.003 0.014 27-APR-06 03-MAY-06 256 0.019+/- 0.004 0.017 27-APR-06 03 -MAY- 06 256 0.022+/- 0 004 Duplicate 03 -MAY- 06 10-MAY-06 301 0.016+/- 0.003 < 0.017 10-MAY-06 17-MAY- 06 306 0.015+/- 0.003 < 0.013 17-MAY-06 24-MAY-06 287 0.034+/- 0.004 < 0.008 24 -MAY- 06 31-MAY- 06 295 0.021+/- 0.004 < 0.007 31-MAY-06 07-JUN- 06 302 0.032+/- 0. 004 < 0.006 07-JUN-06 14-JUN- 06 305 0.025+/- 0.004 < 0.011 14 -JUN- 06 21-JUN- 06 298 0.026+/- 0.004

• 0.013 21-JUN-06 28-JUN-06 297 0.022+/- 0. 004 < 0.017 28-JUN-06 05-JUL-06 313 0 .026+/- 0.004 < 0.015 05-JUL-06 12 -JUL- 06 287 0.026+/- 0.004 < 0.010 12-JUL-06 19-JUL- 06 303 0.026+/- 0.004

• 0.018 19-JUL-06 27-JUL-06 349 0.029+/- 0 .004

• 0.015 27-JUL-06 02-AUG-06 244 0.021+/- 0.004

• 0.010 02 -AUG- 06 09-AUG-06 304 0.025+/- 0 .004

• 0.009 09-AUG-06 16-AUG- 06 300 0.027+/- 0.004 < 0.005 16-AUG-06 24-AUG-06 345 0.036+/- 0.004

• 0.011 24-AUG-06 30-AUG-06 263 0.027+/- 0.004

• 0.014 30 -AUG- 06 06-SEP-06 318 0.032+/- 0.004 < 0.020 06-SEP-06 13-SEP-06 302 0.035+/- 0. 004 < 0.011 13-SEP-06 20-SEP-06 311 0.023+/- 0. 004 < 0.011 20-SEP-06 27-SEP-06 286 0.031+/- 0.004 < 0.017 2006 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 Volume Concentration Concentration Duplicate Start Date End Date M3 (pCilm3 ) (pCilm3 ) Analysis 27-SEP-06 03-OCT-06 264 0.032+/- 0.005

• 0.014 03-OCT-06 11-OCT-06 336 0.032+/- 0. 004 < 0.013 11-OCT-06 18-OCT-06 309 0.026+/- 0.004 < 0.007 18-OCT-06 25-OCT-06 290 0.028+/- 0.004 < 0.008 25-OCT-06 01-NOV-06 314 0.023+/- 0.004 < 0.018 01-NOV-06 08 -NOV- 06 299 0.039+/- 0.005 < 0.020 08-NOV-06 16-NOV-06 340 0.044+/- 0.004

• 0.016 16-NOV-06 22-NOV-06 260 0.042+/- 0.005 < 0.028 22-NOV-06 01-DEC-06 390 0.041+/- 0.004 < 0.015 01-DEC-06 05-DEC-06 174 0.059+/- 0.007

• 0.025 05-DEC-06 13-DEC-06 342 0.040+/- 0. 004 < 0.012 13-DEC-06 20-DEC-06 303 0.035+/- 0.004 < 0.015 20-DEC-06 27-DEC-06 314 0.027+/- 0.004 < 0.017 27-DEC-06 04 -JAN - 07 338 0.023+/- 0.003 < 0.017 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 4

Air Particulate and Charcoal Filters Location: 032 Gross Beta 1-131 Collection Collection Volume Concentration Concentration 3

Duplicate M3 (pCilm 3 ) * (pCiIm ) Analysis Start Date End Date 28-DEC-05 05- JAN - 06 348 0 .028+/- 0.004 0.008 05 -JAN - 06 11-JAN-06 261 0.031+/- o.06s 0.022 11-JAN-06 18-JAN-06 299 0.027+/- 0.004 0.014 18-JAN- 06 25-JAN-06 302 0.027+/- 0.004 0.011 25 -JAN -06 01-FEB-06 299 0.021+/- 0 .004 0.013 01-FEB-06 08-FEB-06 310 0.024+/- 0 .004 0.010 08-FEB-06 15-FEB-06 292 0 .023+/- 0 .004 0.016 15-FEB-06 22-FEB-06 304 0.035+/- 0.004 0.012 22-FEB-06 01-MAR- 06 306 0.033+/- 0.004 0 .011 01-MAR-06 08-MAR-06 297 0.035+/- 0.004 0.016 08-MAR-06 14 -MAR- 06 269 0.026+/- 0.004 0.019 14-MAR-06 23-MAR- 06 390 0.019+/- 0.003 0.012 23-MAR-06 29-MAR-06 260 0.020+/- 0.004 0.018 29-MAR-06 05-APR-06 281 0.023+/- 0.004 0.015 05-APR-06 12-APR-06 292 0.027+/- 0.004 0.009 12-APR-06 19-APR-06 301 0.025+/- 0.004 0.016 19-APR-06 27-APR-06 351 0.021+/- 0.003 0.014 27-APR-06 03 -MAY- 06 252 0.024+/- 0.004 0.017 03-MAY-06 10-MAY-06 301 0.016+/- 0 .003 0.017 10-MAY-06 17-MAY- 06 306 0.014+/- 0.003 0.013 17-MAY-06 24 -MAY-06 282 0.031+/- 0. 004 0.008 24 -MAY-06 31-MAY-06 280 0.024+/- 0.004 0.007 31-MAY-06 07-JUN-06 301 0.032+/- 0.004 0.006 07-JUN-06 14 -JUN- 06 284 0.030+/- 0.004 0.011 14-JUN -06 21-JUN- 06 296 0.029+/- 0. 004 0.013 21-JUN-06 28-JUN- 06 297 0.022+/- 0.004 0.017 28-JUN-06 05-JUL-06 311 0.031+/- 0.004 0.015 05-JUL-06 12-JUL-06 290 0.025+/- 0 .004 0.009 12-JUL-06 19-JUL-06 303 0.027+/- 0 .004 0.018 19- JUL - 06 27-JUL-06 343 0.032+/- 0 .004 0.015 27-JUL-06 02-AUG-06 247 0.021+/- 0 .004 0.010 02 -AUG- 06 09-AUG-06 301 0.027+/- 0 .004 0.009 09-AUG-06 16-AUG-06 302 0.024+/- 0.004 0.005 16-AUG-06 24 -AUG- 06 340 0.038+/- 0.004 0.011 24-AUG-06 30-AUG-06 254 0.028+/- 0.004 0.014 30-AUG-06 06-SEP-06 302 0.028+/- 0. 004 0.021 06-SEP-06 13-SEP-06 297 0.038+/- 0.004 0.011 13-SEP-06 20-SEP-06 314 0.027+/- 0.004 0.011 20-SEP-06 27-SEP-06 261 0.037+/- 0.005 0.018 27-SEP-06 03-OCT-06 243 0.030+/- 0.005 0.015 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 5

Air Particulate and Charcoal Filters Location: 032 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End-Date m3 (pCilm 3 ) (pCilm 3 ) Analysis 03-OCT-06 11-OCT-06 316 0.030+/- 0.004 0.013 11-OCT-06 18-OCT-06 289 0.024+/- 0.004 0.007 18-OCT-06 25-OCT-06 265 0.029+/- 0.005 0.009 25-OCT-06 01-NOV-06 279 0.025+/- 0.004 0.020 01-NOV-06 08-NOV-06 319 0.034+/- 0.004 0.019 08-NOV-06 16-NOV-06 345 0.045+/- 0.004 0.016 16-NOV-06 22-NOV-06 259 0.042+/- 0.005 0.029 22-NOV-06 01-DEC-06 397 0.041+/- 0.004 0.014 01-DEC-06 05-DEC-06 181 0.052+/- 0.007 0.024 05-DEC-06 13-DEC-06 347 0.031+/- 0.004 0.012 13-DEC-06 20-DEC-06 308 0.030+/- 0.004 0.015 20-DEC-06 27-DEC-06 330 0.027+/- 0.004 0.016 27-DEC-06 04-JAN - 07 358 0.022+/- 0.003 0.016 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 6

Air Particulate and Charcoal Filters Location: 037 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date M3 (pCilm 3 ) (pCilm 3 ) Analysis 28-DEC-05 05-JAN-06 342 0.027+/- 0.004 0.009 05-JAN-06 11-JAN-06 261 0.028+/- 0.004 0.022 11-JAN-06 18-JAN-06 303 0.027+/- 0.004 0.013 18-JAN-06 25-JAN- 06 298 0.025+/- 0.004 0.011 25-JAN-06 01-FEB-06 302 0.021+/- 0. 004 0.013 01-FEB-06 08-FEB-06 308 0.023+/- 0.004 0.010 08-FEB-06 15-FEB-06 292 0.026+/- 0.004 0.016 15-FEB-06 22-FEB-06 304 0.031+/- 0.004 0.012 22-FEB-06 01 -MAR- 06 306 0.039+/- 0.004 0.011 01-MAR-06 08-MAR-06 291 0.041+/- 0.005 0.016 08-MAR-06 14 -MAR-06 269 0.026+/- 0.004 0.019 14 -MAR- 06 23 -MAR- 06 371 0.019+/- 0.003 0.013 23-MAR -06 29-MAR- 06 233 0.021+/- 0.004 0.020 29-MAR-06 05-APR-06 270 0.022+/- 0. 004 0.016 05-APR-06 12-APR-06 294 0.033+/- 0.004 0.009 12-APR-06 19-APR-06 291 0.024+/- 0.004 0.017 19-APR-06 27-APR-06 328 0.023+/- 0.003 0.015 27-APR-06 03 - MAY-06 266 0.021+/- 0 .004 0.016 03 -MAY- 06 10-MAY-06 301 0.019+/- 0.003 0.017 10-MAY-06 17-MAY-06 307 0.020+/- 0.003 0.013 17-MAY-06 24 -MAY- 06 285 0.029+/- 0 .004 0.008 24 -MAY-06 31-MAY-06 290 0.022+/- 0.004 0.007 31-MAY-06 07- JUN- 06 287 0.028+/- 0 .004 0.007 07-JUN- 06 14-JUN-06 288 0.028+/- 0 .004 0.011 14 -JUN- 06 21- JUN- 06 307 0.026+/- 0.004 0.013 21-JUN-06 28-JUN-06 312 0.023+/- 0.004 0.016 28- JUN- 06 05 -JUL- 06 322 0.030+/- 0.004 0.015 05-JUL-06 12-JUL-06 299 0.029+/- 0.004 0.009 12-JUL- 06 19-JUL-06 309 0.029+/- 0.004 0.018 19-JUL-06 27-JUL-06 360 0.038+/- 0.004 0.014 27-JUL-06 02-AUG-06 260 0.020+/- 0.004 0.009 02 -AUG- 06 09-AUG-06 301 0.026+/- 0.004 0.009 09-AUG-06 16-AUG-06 291 0.027+/- 0.004 0.005 16 -AUG- 06 24-AUG-06 346 0.038+/- 0.004 0.011 24-AUG-06 30 -AUG- 06 259 0.027+/- 0.004 0.014 30-AUG-06 06-SEP-06 302 0.032+/- 0.004 0.021 06-SEP-06 13-SEP-06 302 0.042+/- 0.005 0.011 13-SEP-06 20-SEP-06 313 0.025+/- 0.004 0.011 20-SEP-06 27-SEP-06 276 0.028+/- 0.004 0.017 27-SEP-06 03-OCT-06 252 0.030+/- 0.005 0.014 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 7

Air Particulate and Charcoal Filters Location: 037 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date m3 (pCilm 3 ) (pCilm 3 ) Analysis 03-OCT-06 11-OCT-06 322 0.033+/- 0.004 0.013 11-OCT-06 18-OCT-06 300 0.023+/- 0.004 0.007 18-OCT-06 25-OCT-06 284 0.024+/- 0.004 0.008 25-OCT-06 01-NOV-06 300 0.023+/- 0.004 0.018 01-NOV-06 08-NOV-06 279 0.036+/- 0.005 0.021 08-NOV-06 16-NOV-06 346 0.047+/- 0.004 0.016 16-NOV-06 22-NOV-06 259 0.043+/- 0.005 0.029 22-NOV-06 01-DEC-06 390 0.038+/- 0.004 0.015 01-DEC-06 05-DEC-06 178 0.057+/- 0.007 0.024 05-DEC-06 13-DEC-06 342 0.038+/- 0.004 0.012 13-DEC-06 20-DEC-06 308 0.033+/- 0.004 0.015 20-DEC-06 27-DEC-06 314 0.027+/- 0.004 0.017 27-DEC-06 04-JAN-07 342 0.021+/- 0.003 0.017 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 8

Air Particulate and Charcoal Filters Location: 048 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date m3 (pCilm 3 ) (pCi/m 3 ) Analysis 28-DEC-05 05-JAN-06 336 0.030+/- 0.004 0.009 05-JAN-06 11-JAN-06 261 0.032+/- 0.005 0.022 11-JAN-06 18-JAN-06 305 0.024+/- 0.004 0.013 18-JAN-06 25-JAN-06 307 0.025+/- 0.004 0.011 25-JAN-06 01-FEB-06 301 0.020+/- 0.004 0.013 01-FEB-06 08-FEB-06 314 0.024+/- 0.004 0.010 08-FEB-06 15-FEB-06 290 0.027+/- 0.004 0.016 15-FEB-06 22-FEB-06 305 0.030+/- 0.004 0.012 22-FEB-06 01-MAR-06 306 0.034+/- 0.004 0.011 01-MAR-06 08-MAR-06 296 0.033+/- 0.004 0.016 08-MAR-06 14-MAR-06 269 0.026+/- 0.004 0.019 08-MAR-06 14-MAR-06 269 0.025+/- 0.004 Duplicate 14-MAR-06 23-MAR-06 385 0.021+/- 0.003 0.012 23-MAR-06 29-MAR-06 258 0.020+/- 0.004 0.018 29-MAR-06 05-APR-06 303 0.022+/- 0.004 0.014 05-APR-06 12-APR-06 295 0.030+/- 0.004 0.009 12-APR-06 19-APR-06 296 0.028+/- 0.004 0.016 19-APR-06 27-APR-06 114 0.012+/- 0.006 0.043 27-APR-06 03-MAY-06 261 0.018+/- 0.004 0.016 03-MAY- 06 10-MAY-06 305 0.017+/- 0.003 0.016 10-MAY-06 17-MAY- 06 302 0.016+/- 0.003 0.014 17-MAY-06 24-MAY-06 286 0.032+/- 0.004 0.008 24-MAY-06 31-MAY- 06 280 0.024+/- 0.004 0.007 3 1-MAY- 06 07-JUN-06 296 0.029+/- 0.004 0.006 07-JUN-06 14-JUN- 06 284 0.031+!- 0.004 0.011 14-JUN-06 21-JUN-06 301 0.026+/- 0.004 0.013 21-JUN-06 28-JUN-06 307 0.027+/- 0.004 0.016 28-JUN-06 05-JUL-06 327 0.027+/- 0.004 0.015 05-JUL-06 12-JUL-06 290 0.025+/- 0.004 0.009 12-JUL-06 19-JUL-06 291 0.031+/- 0.004 0.019 19-JUL-06 27-JUL-06 349 0.029+/- 0.004 0.015 27-JUL-06 02-AUG-06 249 0.024+/- 0.004 0.010 02-AUG-06 09-AUG-06 297 0.028+/- 0.004 0.009 09-AUG-06 16-AUG-06 304 0.028+/- 0.004 0.005 16-AUG-06 24-AUG-06 337 0.038+/- 0.004 0.011 24-AUG-06 30-AUG-06 250 0.025+/- 0.004 0.014 30-AUG-06 06-SEP-06 302 0.035+/- 0.004 0.021 06-SEP-06 13-SEP-06 298 0.039+/- 0.004 0.011 13-SEP-06 20-SEP-06 313 0.027+/- 0.004 0.011 20-SEP-06 27-SEP-06 295 0.029+/- 0.004 0.016 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 9

Air Particulate and Charcoal Filters Location: 048 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date m3 (pCiIm 3 ) (pCilm 3 ) Analysis 20-SEP-06 27-SEP-06 295 0.029+/- 0.004 Duplicate 27-SEP-06 03-OCT-06 265 0.028+/- 0.004 0.014 03-OCT-06 11-OCT-06 339 0.031+/- 0.004 0.012 11-OCT-06 18-OCT-06 302 0.025+/- 0.004 0.007 18-OCT-06 25-OCT-06 278 0.029+/- 0.004 'C 0.008 25-OCT-06 01-NOV-06 300 0.027+/- 0.004 'C 0.018 01 -NOV- 06 08-NOV-06 300 0.032+/- 0.004 'C 0.020 08-NOV-06 16-NOV-06 341 0.044+/- 0.004 'C 0.016 16-NOV-06 22-NOV-06 260 0.037+/- 0.005 'C 0.028 22-NOV-06 01-DEC-06 390 0.037+/- 0.004 'C 0.015 01-DEC-06 05-DEC-06 179 0.049+/- 0.007 'C 0.024 05-DEC-06 13-DEC-06 339 0.034+/- 0.004 'C 0.012 13-DEC-06 20-DEC-06 303 0.033+/- 0.004 'C 0.015 20-DEC-06 27-DEC-06 314 0.026+/- 0.004 'C 0.017 27-DEC-06 04 -JAN- 07 338 0.019+/- 0.003 'C 0.017 2006 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 Concentration Duplicate Start Date End Date m3 (pCilm 3 ) (pCilm 3 ) Analysis 28-DEC-05 05-JAN-06 335 0.026+/- 0. 004 0.009 05-JAN-06 11 -JAN- 06 131 0.023+/- 0.007 0.044 11-JAN- 06 18-JAN-06 299 0.024+/- 0.004 0.014 18 -JAN-06 25-JAN- 06 292 0.024+/- 0.004 0.011 25-JAN-06 01-FEB-06 298 0.020+/- 0.004 0.013 01-FEB-06 08-FEB-06 298 0.023+/- 0.004 0.011 08-FEB-06 15-FEB-06 281 0.026+/- 0.004 0.016 15-FEB-06 22-FEB-06 289 0.031+/- 0.004 0.013 22-FEB-06 01-MAR- 06 287 0.043+/- 0.005 0.011 01-MAR-06 08-MAR- 06 275 0.036+/- 0.005 0.017 08-MAR-06 14-MAR-06 260 0.024+/- 0.004 0.019 14-MAR-06 23-MAR-06 364 0.022+/- 0.003 0.013 23 -MAR- 06 29-MAR- 06 238 0.015+/- 0 .004 0.020 29-MAR- 06 05-APR-06 288 0.020+/- 0.004 0.015 05-APR-06 12-APR-06 280 0.028+/- 0.004 0.009 12-APR-06 19-APR-06 286 0.026+/- 0.004 0.017 19-APR-06 27-APR-06 316 0.025+/- 0.003 0.015 27-APR-06 03 -MAY- 06 270 0.020+/- 0 .004 0.016 03 -MAY- 06 10-MAY-06 308 0.024+/- 0. 004 0.016 10-MAY-06 17-MAY- 06 337 0.018+/- 0.003 0.012 17-MAY-06 24 -MAY- 06 284 0.030+/- 0.004 0.008 24 -MAY- 06 31-MAY-06 290 0.021+/- 0.004 0.007 31-MAY-06 07-JUN-06 298 0.029+/- 0.004 0.006 07-JUN-06 14-JUN-06 286 0.033+/- 0.004 0.011 14 -JUN-06 21-JUN-06 297 0.023+/- 0.004 0.013 21-JUN- 06 28-JUN-06 292 0.025+/- 0.004 0.017 28-JUN-06 05-JUL-06 300 0.034+/- 0.004 0.016 05-JUL-06 12-JUL-06 290 0.025+/- 0.004 0.009 12-JUL-06 19-JUL-06 294 0.034+/- 0 .004 0.019 19-JUL-06 27-JUL-06 324 0.033+/- 0.004 0.016 27-JUL-06 02-AUG-06 239 0.022+/- 0.004 0.010 02-AUG-06 09-AUG-06 301 0.029+/- 0.004 0.009 09-AUG- 06 16-AUG-06 302 0.026+/- 0 .004 0.005 16-AUG-06 24-AUG-06 346 0.040+/- 0.004 0.011 24-AUG-06 30-AUG-06 259 0.028+/- 0.004 0.014 30-AUG-06 06-SEP-06 301 0.034+/- 0.004 0.021 30-AUG-06 06-SEP-06 301 0.036+/- 0.004 Duplicate 06-SEP-06 13-SEP-06 298 0.042+/- 0.005 0.011 13-SEP-06 20-SEP-06 293 0.027+/- 0. 004 0.012 20-SEP-06 27-SEP-06 291 0.030+/- 0. 004 0.017 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 11

Air Particulate and Charcoal Filters Location: 049 Gross Beta 1-131 Collection Collection Volume Concentration Concentration Duplicate Start Date End Date m3 (pCilm 3 ) (pCilm 3 ) Analysis 27-SEP-06 03-OCT-06 261 0.033+/- 0.005 0.014 03-OCT-06 11-OCT-06 333 0.034+/- 0.004 0.013 11-OCT-06 18-OCT-06 311 0.026+/- 0.004 0.007 25-OCT-06 287 0.016+/- 0 .004 0.008 18-OCT-06 01-NOV-06 292 0.022+/- 0.004 0.019 25-OCT-06 01-NOV-06 08-NOV-06 279 0.034+/- 0.005 0.021 08-NOV-06 16-NOV-06 347 0.042+/- 0.004 0.016 16-NOV-06 22-NOV-06 264 0.041+/- 0.005 0.028 22-NOV-06 01-DEC-06 397 0.037+/- 0.004 'C 0 .014 05-DEC-06 181 0.057+/- 0.007 'C 0.024 01-DEC-06 05-DEC-06 13-DEC-06 340 0.038+/- 0.004 'C 0.012 13-DEC-06 20-DEC-06 303 0.034+/- 0.004 'C 0.015 20-DEC-06 27-DEC-06 314 0.025+/- 0.004 'C 0.017 27-DEC-06 04-JAN- 07 342 0.022+/- 0.003 'C 0.017 04-JAN-07 342 0-024+/- 0.003 Duplicate 27-DEC-06 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 12

Quarterly Air Particulate - Gamma Location: 002 29-MAR-06 Nuclide Concentration (pCi/m 3 )

BE-7 .058+/- 0.010 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 28-JUN-06 Nuclide Concentration (pCi/m3)

BE-7 .089+/- 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-OCT-06 Nuclide Concentration (pCilm3 )

BE-7 .082+/- 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 27-DEC-06 Nuclide Concentration (pCi/m3)

BE-7 .09+/- 0.018 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 13

Quarterly Air Particulate - Gamma Location: 002 27-DEC-06 Nuclide Concentration (pCi/m 3 )

MN-54

• 0.001 ZN-65

• 0.001 ZR-NB-95

• 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 14

Quarterly Air Particulate - Gamma Location: 018 29-MAR-06 Nuclide Concentration (pCi/m 3 )

BE-7 .071+/- 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 28-JUN-06 Nuclide Concentration (pCilm3 )

BE-7 .102+/- 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-06 Nuclide Concentration (pCilm3 )

BE-7 .076+/- 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 27-DEC-06 Nuclide 3 Concentration (pCi/r )

BE-7 .071+/- 0.012 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 15

Quarterly Air Particulate - Gamma Location: 018 27-DEC-06 Nuclide Concentration (pCi/m3)

MN-54

• 0.001 ZN- 65

• 0.001 ZR-NBE-95

• 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 16

Quarterly Air Particulate - Gamma Location: 032 29-MAR-06 Nuclide Concentration (pCi/rm3 )

BE-7 .058+/- 0.010 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 28-JUN-06 Nuclide Concentration (pCi/rn3 )

BE-7 .1+/- 0.012 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-06 Nuclide Concentration (pCilm3 )

BE-7 .076+/- 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 27-DEC-06 Nuclide Concentration (pCi/m 3 )

BE-7 .061+1- 0.013 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 17

Quarterly Air Particulate - Gamma Location: 032 27-DEC-06 Nuclide Concentration (pCi/m3 )

MN- 54

• 0.001 ZN-65

• 0.001 ZR-NB-95

• 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 18

Quarterly Air Particulate - Gamma Location: 037 29-MAR-06 Nuclide Concentration (pCi/m 3 )

BE-7 .064+/- 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 28-JUN-06 Nuclide Concentration (pCilm 3 )

BE-7 .11+/- 0.016 CO-58

• 0.001 CO-60

• 0.001 CS-134

• 0.001 CS-137

• 0.001 FE-S9

• 0.001 MN-54

• 0.001 ZN-65

• 0.001 ZR-NB-95

• 0.001 03-OCT-06 Nuclide Concentration (pCilm3)

BE-7 .112+/- 0.020 CO-S8

• 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 27-DEC-06 Nuclide Concentration (pCilm3 )

BE-7 .064+/- 0.014 CO-58

• 0.001 CO-60

• 0.001 CS-134

• 0.001 CS-137

• 0.001 FE-59

• 0.002 Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C-19

Quarterly Air Particulate - Gamma Location: 037 27-DEC-06 Nuclide Concentration (pCi/m3)

MN-54

• 0.001 ZN-65

• 0.001 ZR-NB -95

• 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 20

Quarterly Air Particulate - Gamma Location: 048 29-MAR-06 Nuclide Concentration (pCilm3 )

BE-7 .054+/- 0.012 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 28-JUN-06 Nuclide Concentration (pCi/m 3 )

BE-7 .107+/- 0.016 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-06 Nuclide Concentration (pCi/m3)

BE-7 .085+/- 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 27-DEC-06 Nuclide Concentration (pCilm3 )

BE-7 .075+/- 0.014 CO-58 < 0.001 CO-60 < 0.001 CS-134 < 0.001 CS-137 < 0.001 FE-59 < 0.001 Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 21

Quarterly Air Particulate - Gamma Location: 048 27-DEC-06 Nuclide Concentration (pCi/m 3 )

MN*-4

• 0.001 ZN-65

• 0.001 ZR-NB -95

• 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 22

Quarterly Air Particulate - Gamma Location: 049 29-MAR-06 Nuclide Con centration (pCilm3 )

BE-7 058+/- 0.016 BE-7 061+/- 0.012 CO-58

• 0.001 CO-58

• 0.001 CO-60

• 0.001 CO-60

• 0.001 CS-134

• 0.001 CS-134

• 0.002 CS-137

• 0.001 CS-137

• 0.001 FE-59

• 0.001 FE-59

• 0.002 MN-54

• 0.001 MN-54

• 0.001 ZN-65

• 0.001 ZN-65

• 0.001 ZR-NB-95

• 0.001 ZR-NB-95

• 0.002 28-JUN-06 3 Nuclide Conc eentration (pCilm )

BE-7 .1 13+/- 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-06 3 Nuclide Conc entration (pCi/m )

BE-7 .0 84+/- 0.012 BE-7 .0 84+/- 0.016 CO-58

• 0.001 CO-58

• 0.001 CO-60

• 0.001 CO-60

• 0.001 CS-134

• 0.001 CS-134

• 0.001 CS-137

• 0.001

• Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 23

Quarterly Air Particulate - Gamma Location: 049 03-OCT-06 Nuclide Concentration (pCilm3)

CS-137

• 0.001 FE-59

• 0.002 FE-59

• 0.002 MN-54

• 0.001

• MN-54

• 0.001 ZN-65

• 0.001

• ZN-65

• 0.001 ZR-NB-95

• 0.001

• ZR-NBD-95

• 0.001 27-DEC-06 Nuclide Concentration (pCi/rn3)

BE-7 .066+/- 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 Duplicate Analysis 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 24

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis.

12 -JAN- 06 MN-54 < 6.400 12-JAN- 06 CO-58 < 7.600 12-JAN-06 FE-59 < 10.200 12 -JAN-06 CO-60 < 3.200 12 -JAN-06 ZN-65 < 5.400 12-JAN-06 ZR-NB-95 < 4.800 12 -JAN-06 1-131 < 6.900 12-JAN- 06 CS-134 < 3.600 12 -JAN-06 CS-137 < 7.000 12-JAN-06 BA-LA- 140 < 3.300 12 -JAN-06 H-3 < 145.000 09-FEB-06 MN-54 < 2.300 09-FEB-06 CO-58 < 2.100 09-FEB-06 FE-59 < 3.900 09-FEB-06 CO-60 < 3.500 09-FEB-06 ZN-65 < 2.500 09-FEB-06 ZR-NB- 95 < 3.600 09-FEB-06 1-131 < 8.600 09-FEB-06 CS-134 < 3.300 09-FEB-06 CS-137 < 4.000 09-FEB-06 BA-LA-140 < 3 .300 09-FEB-06 H-3 < 153.000 16-MAR-06 MN-54 < 2.600 16-MAR-06 CO- 58 < 2.900 16-MAR-06 FE-59 < 5.400 16-MAR-06 CO-60 < 3.800 16-MAR-06 ZN-65 < 5.600 16-MAR- 06 ZR-NB-95 < 3.900 16-MAR-06 1-131 < 8.900 16-MAR-06 CS-134 < 4.200 16 -MAR-06 CS-137 < 3.200 16-MAR-06 BA-LA-140 < 5.200 16-MAR-06 H-3 < 176.000 13-APR-06 MN- 54 < 4.900 13-APR-06 CO-58 < 4.400 13-APR-06 FE-59 < 5.100 13-APR-06 CO- 60 < 6.800 13-APR-06 ZN-65 < 5.500 13-APR-06 ZR-NB- 95 < 3.900 13-APR-06 1-131 < 8.900 13-APR-06 CS-134 < 4.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 25

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 13-APR-06 CS-137 4.100 13-APR-06 BA-LA-140 6.400 13-APR-06 H-3 158.000 11-MAY-06 MN-54 2.200 11-MAY- 06 CO- 58 2.400 11-MAY- 06 FE-59 5.700 11-MAY-06 CO- 60 2.100 11-MAY-06 ZN-65 2.600 11-MAY- 06 ZR-NB-95 2.400 11 -MAY- 06 1-131 4.800 11-MAY-06 CS-134 3 .100 11-MAY- 06 CS-137 2.300 11-MAY-06 BA-LA-140 2.800 11-MAY-06 H-3 140.000 08 -JUN- 06 MN-54 2.800 08-JUN-06 CO-58 3.200 08-JUN-06 FE-59 5.300 08-JUN-06 CO-60 6.300 08-JUN-06 ZN-65 7.000 08-JUN-06 ZR-NB-95 5.000 08-JUN-06 1-131 6.400 08-JUN-06 CS- 134 5.100 08-JUN-06 CS-137 4.700 08-JUN-06 BA-LA-140 3.800 08- JUN- 06 H-3 186.000 13-JUL-06 MN-54 3.000 13-JUL-06 MN-54 4.500 Duplicate 13 -JUL-06 CO-58 2.500 13-JUL-06 CO-S8 2.900 Duplicate 13-JUL-06 FE-59 5.800 13-JUL-06 FE-59 3.700 Duplicate 13-JUL-06 CO-60 2.300 13 -JUL-06 CO-60 2.200 Duplicate 13-JUL-06 ZN-65 2.500 13-JUL-06 ZN-65 3.800 Duplicate 13-JUL-06 ZR-NB-95 4.000 13 -JUL- 06 ZR-NB- 95 4.200 Duplicate 13-JUL-06 1-131 4 .500 13-JUL-06 1-131 8.400 Duplicate 13-JUL-06 CS- 134 2.800 13-JUL-06 CS-134 4 .700 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 26

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum &H-3 Collection Nuclide Concentration Duplicate,

'Date (pCi/Liter) Analysis 13-JUL-06 CS-137 < 4.500 13-JUL-06 CS-137 < 5.200 Duplicate 13 -JUL- 06 BA-LA-140 < 1.600 13 -JUL- 06 BA- LA- 140 < 6.700 Duplicate 13-JUL-06 H-3 < 147.000 13-JUL-06 H-3 < 147.000 Duplicate 24 -AUG- 06 MN- 54 < 1.400 24 -AUG- 06 CO-58 < 2.100 24 -AUG- 06 FE-59 < 3_500 24-AUG-06 CO-60 < 1.500 24 -AUG- 06 ZN-65 < 4.200 24 -AUG- 06 ZR-NB-95 < 2.900 24-AUG-06 1-131 < 3.100 24 -AUG- 06 CS-134 S< 2.400 24 -AUG- 06 CS-137 < 3.000 24 -AUG- 06 BA-LA-140 < 1.800 24-AUG-06 H-3 < 143.000 14-SEP-06 MN- 54 < 3.200 14-SEP-06 CO- 58 < 3.300 14-SEP-06 FE-59 < 4.500 14-SEP-06 CO-60 < 1.200 14-SEP-06 ZN-65 < 4.500 14-SEP-06 ZR-NB-95 < 3.200 14-SEP-06 1-131 < 3.600 14-SEP-06 CS-134 < 3.400 14-SEP-06 CS-137 < 4.400 14-SEP-06 BA-LA-140 < 5.700 14-SEP-06 H-3 < 186.000 12-OCT-06 MN-54 < 4.000 12-OCT-06 MN-54 < 2.600 Duplicate 12-OCT-06 CO-58 < 5.100 12-OCT-06 CO-58 < 2.900 Duplicate 12-OCT-06 FE-59 < 9.600 12-OCT-06 FE-59 < 7.300 Duplicate 12-OCT-06 CO-60 < 3.400 12-OCT-06 CO-60 < 4.700 Duplicate 12-OCT-06 ZN-65 < 3.800 12-OCT-06 ZN-65 < 4.700 Duplicate 12-OCT-06 ZR-NB-95 < 4.800 12-OCT-06 ZR-NB- 95 < 2.800 Duplicate 12-OCT-06 1-131 < 5.700 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 27

Exposure Pathway - Waterborne Surface Water Location JRR Gamma Spectrum & H-3

,Collection INuclide Concentration Duplicate Date (pCilLiter) Analysis 12-OCT-06 1-131 < 8.100 Duplicate 12-OCT-06 CS-134 < 4.500 12-OCT-06 CS-134 < 3.500 Duplicate 12-OCT-06 CS-137 < 4.200 12-OCT-06 CS-137 < 4 .200 Duplicate 12-OCT-06 BA-LA- 140 < 6.400 12-OCT-06 BA-LA-140 < .100 Duplicate 12-OCT-06 H-3 < 181.000 12-OCT-06 H-3 < 181.000 Duplicate 16-NOV-06 MN- 54 < 4.700 16-NOV-06 CO-58 < 6.100 16-NOV-06 FE-59 < 8.800 16-NOV-06 CO-60 < 4.700 16 -NOV- 06 ZN-65 < 4.200 16-NOV-06 ZR-NB- 95 < 3.600 16-NOV-06 1-131 < 7.100 16-NOV-06 CS-134 < 3.200 16 -NOV- 06 CS-137 < 4.700 16 -NOV- 06 BA-LA-140 < 3.600 16-NOV-06 H-3 < 166.000 14-DEC-06 MN- 54 < 2.600 14-DEC-06 CO-58 < 2.500 14-DEC-06 FE-S9 < 8.400 14-DEC-06 CO-60 < 4.700 14-DEC-06 ZN-65 < 7.900 14-DEC-06 ZR-NB- 95 < 3.500 14-DEC-06 1-131 < 3.200 14-DEC-06 CS-134 < 5.000 14-DEC-06 CS-137 < 7.000 14-DEC-06 BA-LA- 140 < 4.300 14-DEC-06 H-3 < 139.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 28

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 12 -JAN - 06 MN-54 < 2.900 12 -JAN- 06 CO-58 < 2.900 12-JAN-06 FE-59 < 3.500 12-JAN-06 CO-60 < 3.800 12 -JAN- 06 ZN-65 < 3.700 12 -JAN-06 ZR-NB- 95 < 4.000 12- JAN- 06 1-131 < 7.000 12-JAN-06 CS-134 < 3.500 12-JAN-06 CS-137 < 4.700 12 -JAN-06 BA-LA-140 < 3.400 12-JAN- 06 H-3 8949.000 +/- 267.000 09-FEB-06 MN-S4 < 4.400 09-FEB-06 CO- 58 < 3.800 09-FEB-06 FE-59 < 5.900 09-FEB-06 CO-60 < 3.600 09-FEB-06 ZN-65 < 6.700 09-FEB-06 ZR-NB- 95 < 5.700 09-FEB-06 1-131 < 6.700 09-FEB-06 CS-134 < 4.300 09-FEB-06 CS-137 < 5.000 09-FEB-06 BA- LA- 140 < 3.900 09-FEB-06 H-3 8624.000 +/- 258.000 16-MAR-06 MN- 54 < 2.500 16-MAR-06 CO- 58 < 2.100 16-MAR-06 FE-59 < 3.600 16-MAR- 06 CO-60 < 2.000 16-MAR- 06 ZN-65 < 7.000 16-MAR- 06 ZR-NB-95 < 4.300 16-MAR-06 1-131 < 5.400 16-MAR- 06 CS-134 < 3.000 16-MAR-06 CS- 137 < 2.900 16-MAR-06 BA- LA- 140 < 2.500 16-MAR-06 H-3 9770.000- +/- 283.000 13-APR-06 MN-54 < 3.700 13-APR-06 CO- 58 < 3.600 13-APR-06 FE-59 < 5.100 13-APR-06 CO-60 < 3.100 13-APR-06 ZN- 65 < 6.300 13-APR-06 ZR-NB- 95 < S.500 13-APR-06 1-131 < 7.400 13-APR-06 CS-134 < 4.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 29

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum &iH-3 Collection Nuclide Concentration. ,Duplicate

• (pCilLiter), . .

Date 'Analysis,.

13-APR-06 CS-137 4.200 13-APR-06 BA- LA- 140 3.300 13-APR-06 H-3 9455.000+/- 276.000 11-MAY- 06 MN-54 3.300 11-MAY-06 CO-58 2.700 11-MAY-06 FE-59 7.000 11-MAY-06 CO-60 3 .100 11-MAY- 06 ZN-65 5.300 11-MAY- 06 ZR-NB- 95 1.400

<C 11 -MAY- 06 1-131 5.400 11 -MAY- 06 CS- 134 3 .100 11-MAY-06 CS-137 2.900 11-MAY-06 BA-LA- 140 3.500 11-MAY-06 H-3 9593.000+/- 260.000 08-JUN-06 MN- 54 4.800 08-JUN-06 CO-58 4.800 08-JUN-06 FE-59 4.300 08-JUN-06 CO-60 2.900 08- JUN-06 ZN-65 5.300 08-JUN-06 ZR-NB- 95 5.000 08 -JUN- 06 1-131 9.300 08 -JUN- 06 CS-134 3.600 08 -JUN- 06 CS-137 5.300 08-JUN- 06 BA-LA-140 3.000 08-JUN-06 H-3 10207.000+/ 276.000 13-JUL-06 MN-54 5.300 13-JUL-06 CO-S8 3.200 13-JUL-06 FE-59 8.000 13-JUL-06 CO-60 4.400 13-JUL-06 ZN-65 9.100 13-JUL-06 ZR-NB-95 4.200 13-JUL-06 1-131 9.300 13-JUL-06 CS-134 5.200 13-JUL- 06 CS-137 3 . 900 13-JUL-06 BA-LA- 140 8.400 13-JUL-06 H-3 11571.000-+/- 300.000 24 -AUG- 06 MN-54 3 .900 24 -AUG- 06 MN-54 3 .600 Duplicate 24 -AUG- 06 CO-58 4.400 24 -AUG- 06 CO- 58 3.600 Duplicate 24 -AUG- 06 FE-59 5.600 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 30

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum &H-3 Collection Nuclide: Concentration Duplicate Date (pCi/Liter) ý.Analysis 24-AUG-06 FE-59 3.800 Duplicate 24 -AUG-06 CO-60 2.200 24-AUG-06 CO-60 3.800 Duplicate 24-AUG-06 ZN-65 3.700 24-AUG-06 ZN-65 6.700 Duplicate 24-AUG-06 ZR-NB- 95 4.400 24-AUG-06 ZR-NB-95 5.400 Duplicate 24-AUG-06 1-131 6.100 24 -AUG-06 1-131 5.900 Duplicate 24-AUG-06 CS- 134 3 .000 24 -AUG- 06 CS-134 4.000 Duplicate 24 -AUG- 06 CS-137 4.500 24-AUG-06 CS-137 4.200 Duplicate 24-AUG-06 BA- LA- 140 5.600 24 -AUG- 06 BA-LA- 140 5.200 Duplicate 24 -AUG- 06 H-3 13661.000+/- 328.000 24-AUG-06 H-3 13964.000+/- 332.000 Duplicate 14-SEP-06 MN-54 3.100 14-SEP-06 CO-58 4.500 14-SEP-06 FE-59 4.500 14-SEP-06 CO-60 3.400 14-SEP-06 ZN- 65 4.800 14-SEP-06 ZR-NB-95 4.600 14-SEP-06 1-131 8.700 14-SEP-06 CS-134 5.200 14-SEP-06 CS-137 5.500 14-SEP-06 BA-LA- 140 3.700 14-SEP-06 H-3 12976.000+/- 325.000 12-OCT-06 MN-54 2.400 12-OCT-06 CO-58 5.000 12-OCT-06 FE-59 6.600 12-OCT-06 CO- 60 4 .700 12-OCT-06 ZN-65 4.500 12-OCT-06 ZR-NB-95 5.400 12-OCT-06 1-131 5.800 12-OCT-06 CS-134 4.200 12-OCT-06 CS-137 5.100 12-OCT-06 BA-LA- 140 3.400 12-OCT-06 H-3 14267.000+/- 342.000 16-NOV-06 MN-54 3.700 16 -NOV- 06 CO- 58 3.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 31

Exposure Pathway - Waterborne Surface Water Location SP Gamma Spectrum & H-3 Collection Nuclide Concentration Duplicate Date, (pCilLiter) Analysis 16-NOV-06 FE-59 8.400 CO-60 5.900 16-NOV-06 ZN-65 5.200 16 -NOV- 06 ZR-NB-95 3.500 16-NOV-06 16 -NOV- 06 1-131 6.700 16-NOV-06 CS-134 3.700 16-NOV-06 CS-137 5.600 16-NOV-06 BA-LA- 140 6.600 H-3 13479.000+/- 331.000 16-NOV-06 14-DEC-06 MN-54 4.300 CO-5 8 5.800 14-DEC-06 14-DEC-06 FE-S9 8.500 14-DEC-06 CO-60 4.400 ZN-65 5.700 14-DEC-06 14-DEC-06 ZR-NB- 95 5.700 1-131 5.600 14-DEC-06 14-DEC-06 CS-134 4.200 14-DEC-06 CS-137 4.400 14-DEC-06 BA-LA-140 6.800 14-DEC-06 H-3 12883.000+/- 317.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 32

Exposure Pathway - Waterborne Ground Water Location B-12 Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 01-FEB-06 MN-54 1.900 01-FEB-06 CO-58 3.200 01-FEB-06 FE-59 6.500 01-FEB-06 CO-60 3.500 01-FEB-06 ZN-6S 5.300 01-FEB-06 ZR-NB- 95 3.100 01-FEB-06 CS- 134 2.800 01-FEB-06 CS-137 2 .100 01-FEB-06 BA-LA-140 1.900 01-FEB-06 H-3 183 .000 01-FEB-06 1-131 (CHEM) 0.355 10 -MAY- 06 MN-54 3.800 10-MAY-06 CO-58 2.700 10-MAY-06 FE-S9 3.400 10-MAY- 06 CO-60 2.200 10-MAY-06 ZN-65 4.900 10-MAY-06 ZR-NB-95 3.300 10-MAY-06 CS-134 3.000 10-MAY-06 CS- 137 3.500 10 -MAY- 06 BA-LA- 140 4.400 10-MAY- 06 H-3 129.000 10-MAY-06 1-131 (CHEM) 0.305 30-AUG-06 MN- 54 2.200 30- AUG- 06 CO-58 3.100 30-AUG-06 FE-S9 4.100 30-AUG-06 CO-60 1.500 30-AUG-06 ZN-65 3.100 30 -AUG- 06 ZR-NB-95 3 .900 30 -AUG- 06 CS-134 2.800 30-AUG-06 CS-137 3 .000 30-AUG-06 BA-LA- 140 3 .600 30-AUG-06 H-3 139.000 30-AUG-06 1-131 (CHEM) 0.352 17 -NOV- 06 MN-54 1.300 17-NOV-06 CO-S8 2.300 17-NOV-06 FE-59 4.000 17-NOV-06 CO-60 4.300 17-NOV-06 ZN-65 1.800 17-NOV-06 ZR-NB- 95 2.300 17-NOV-06 CS-134 2.600 17-NOV-06 CS-137 3 .100 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 33

Exposure Pathway - Waterborne Ground Water Location B-12

-Collection Nuclide Concentration Duplicate Date7 V (pCilLiter) Analysis 17-NOV- 06 BA-LA- 140 < 2.000 17-NOV-06 H-3 < 171.000 17-NOV-06 1-131 (CHEM) < 0.458 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 34

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide "Concentration Duplicate I Date (pCi/Liter) Analysis 01-FEB-06 MN- 54 2.400 01-FEB-06 CO-58 3.200 01-FEB-06 FE-S9 4.500 01-FEB-06 CO- 60 2.300 01-FEB-06 ZN-65 3 .000 01-FEB-06 ZR-NB-95 3 .800 01-FEB-06 CS- 134 3 .700 01-FEB-06 CS-137 2.300 01-FEB-06 BA-LA- 140 1.700 01-FEB-06 H-3 183 .000 01-FEB-06 1-131 (CHEM) 0.426 10 -MAY- 06 MN-54 3.800 10-MAY-06 CO-58 4.700 10-MAY-06 FE-59 5.300 10-MAY-06 CO-60 6.600 10-MAY-06 ZN-65 6.500 10-MAY -06 ZR-NB-95 5.000 10-MAY- 06 CS-134 3.300 10-MAY-06 CS-137 3.700 10-MAY- 06 BA-LA-140 5.700 10-MAY-06 H-3 167.000 10-MAY-06 1-131 (CHEM) 0.340 30-AUG-06 MN- 54 4.100 30-AUG- 06 CO-58 1.800 30-AUG-06 FE-59 4.000 30-AUG- 06 CO-60 3.500 30-AUG-06 ZN-65 4.200 30-AUG- 06 ZR-NB-95 4.400 30-AUG-06 CS-134 4.200 30-AUG- 06 CS-137 3.600 30-AUG-06 BA-LA-140 2.300 30-AUG-06 H-3 139.000 30-AUG-06 1-131 (CHEM) 0.415 17-NOV- 06 MN-54 5.200 17-NOV-06 CO-58 4.200 17-NOV-06 FE-59 8.400 17-NOV-06 CO-60 5.400 17-NOV-06 ZN-65 5.500 17-NOV-06 ZR-NB- 95 5.200 17-NOV-06 CS-134 4 .100 17-NOV-06 CS-137 5.400 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 35

Exposure Pathway - Waterborne Ground Water Location C-10 Collection Nuclide Concentration Duplicate Date -(pCilLiter) 'Analysis....

17-NOV-06 BA-LA-140 < 5.300 17-NOV-06 H-3 < 171.000 17-NOV-06 1-131 (CHEM) < 0.388 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 36

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclide Concentration Duplicate Date Analysis (pCilLiter) 01-FEB-06 MN-54 5.000 01-FEB-06 CO-58 6.000 01-FEB-06 FE-59 14 .800 01-FEB-06 CO-60 3 .100 01-FEB-06 ZN-65 4.900 01-FEB-06 ZR-NB-95 5.600 01-FEB-06 CS-134 4.700 01-FEB-06 CS-137 5.800 01-FEB-06 BA- LA- 140 5.000 01-FEB-06 H-3 183.000 01-FEB-06 1-131 (CHEM) 0.481 10-MAY-06 MN-54 5.200 10-MAY- 06 CO-58 5.500 10 -MAY -06 FE-59 5.300 10-MAY-06 CO-60 6.200 10-MAY-06 ZN-65 14.300 10-MAY- 06 ZR-NB- 95 6.000 10-MAY-06 CS-134 5.800 10-MAY- 06 CS-137 6.100 10-MAY-06 BA-LA-140 10.700 10-MAY-06 H-3 167.000 10-MAY-06 1-131 (CHEM) 0.352 30-AUG-06 MN-54 3 .600 30 -AUG- 06 CO-58 4.600 30-AUG-06 FE-59 6.200 30-AUG-06 CO-60 3.500 30-AUG-06 ZN-65 7.000 30-AUG-06 ZR-NB- 95 6.400 30-AUG-06 CS-134 3.800 30-AUG-06 CS-137 4 .400 30-AUG-06 BA-LA-140 3.400 30-AUG-06 H-3 139.000 30-AUG-06 1-131 (CHEM) 0.432 17-NOV-06 MN-54 1.700 17-NOV-06 MN-54 2.700 Duplicate 17-NOV- 06 CO-58 2.100 17-NOV-06 CO-58 2 .100 Duplicate 17-NOV-06 FE-59 3.400 17-NOV-06 FE-59 5.500 Duplicate 17-NOV-06 CO-60 2.100 17-NOV-06 CO-60 1.700 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 37

Exposure Pathway - Waterborne Ground Water Location C-49 Collection Nuclidei. " Concentration Duplicate Date (pCilLiter) Analysis 17- NOV - 06 ZN-65 < 5.300 17-NOV-06 ZN-65 < 4.600 Duplicate 17-NOV-06 ZR-NB-9 5 < 3.000 17-NOV-06 ZR-NB-95 < 3 .400 Duplicate 17-NOV-06 CS-134 < 2.300 17-NOV- 06 CS-134 < 3.100 Duplicate 17-NOV- 06 CS-137 < 2.700 17-NOV-06 CS-137 < 3.400 Duplicate 17-NOV-06 BA-LA- 140 < 2.100 17-NOV-06 BA-LA-140 < 3.900 Duplicate 17-NOV-06 H-3 < 166.000 17-NOV-06 H-3 < 166.000 Duplicate 17-NOV-06 1-131 (CHEM) < 0.466 17-NOV-06 1-131 (CHEM) < 0.465 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 38

Exposure Pathway - Waterborne Ground Water Location F-1 Collection * .Nuclide Concentration ....'-,Duplicate

ý"'Date (pCi/Liter)' 'Analysis 01-FEB-06 MN-54 < 4.200 01-FEB-06 CO-58 < 5.800 01-FEB-06 FE-59 < 5.600 01-FEB-06 CO-60 < 2.500 01-FEB-06 ZN-65 < 3.500 01-FEB-06 ZR-NB-95 < 6.200 01-FEB-06 CS-134 < 4.800 01-FEB-06 CS-137 < 3.900 01-FEB-06 BA-LA-140 < 5.200 01-FEB-06 H-3 < 183.000 01-FEB-06 1-131 (CHEM) < 0.326 10-MAY-06 MN-54 < 1.900 10-MAY-06 CO-58 < 2.000 10-MAY-06 FE-59 < 6.400 10-MAY-06 CO-60 < 3.500 10-MAY-06 ZN-65 < 4.300 10-MAY-06 ZR-NB-95 < 2.000 10-MAY-06 CS-134 < 2.400 10-MAY-06 CS-137 < 2.400 10-MAY-06 BA-LA-140 < 3.300 10-MAY-06 H-3 < 129.000 10-MAY-06 1-131 (CHEM) < 0.319 30-AUG-06 MN-54 < 3.100 30-AUG-06 CO-58 < 2.900 30-AUG-06 FE-59 < 2.100 30-AUG-06 CO-60 < 2.400 30-AUG-06 ZN-65 < 6.700 30-AUG-06 ZR-NB-95 < 4.400 30-AUG-06 CS-134 < 2.500 30-AUG-06 CS-137 < 3.600 30-AUG-06 BA-LA-140 < 3.500 30-AUG-06 H-3 < 139.000 30-AUG-06 1-131 (CHEM) < 0.472 17-NOV-06 MN-54 < 2.000 17-NOV-06 CO-58 < 1.900 17-NOV-06 FE-59 < 1.900 17-NOV-06 CO-60 < 2.000 17-NOV-06 ZN-65 < 2.300 17-NOV-06 ZR-NB-95 < 2.900 17-NOV-06 CS-134 < 2.400 17-NOV-06 CS-137 < 2.200 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C 39

Exposure Pathway - Waterborne Ground Water Location F-1 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 17-NOV-06 BA-LA- 140 < 3.800 17-NOV-06 < 171.000 17-NOV-06 1-131 (CHEM) < 0.385 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 40

Exposure Pathway - Waterborne Ground Water Location G-2 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 01-FEB-06 MN-54 5.300 01-FEB-06 CO- 58 2.800 01-FEB-06 FE-59 8 300 01-FEB-06 CO- 60 2.900 01-FEB-06 ZN-65 6.300 01-FEB-06 ZR-NB-95 6.400 01-FEB-06 CS-134 4.300 01-FEB-06 CS-137 6.400 01-FEB-06 BA- LA- 140 3.400 01-FEB-06 H-3 183.000 01-FEB-06 1-131 (CHEM) 0.360 10-MAY-06 MN-54 4.500 10-MAY-06 CO-58 2.100 10-MAY-06 FE-59 7.400 10-MAY-06 CO-60 5.000 10-MAY-06 ZN-65 7.700 10-MAY-06 ZR-NB- 95 4 .000 10-MAY-06 CS-134 3.700 10-MAY - 06 CS-137 5.600 10-MAY-06 BA-LA-140 3.700 10-MAY-06 H-3 140.000 10-MAY- 06 1-131 (CHEM) 0.445 30-AUG-06 MN-54 2.600 30-AUG-06 CO-58 2.800 30-AUG-06 FE-59 7.100 30-AUG-06 CO-60 2.100 30-AUG-06 ZN-65 5.100 30-AUG-06 ZR-NB- 95 3 .000 30-AUG- 06 CS-134 2.900 30-AUG-06 CS-137 2.900 30-AUG-06 BA-LA-140 2.600 30-AUG-06 H-3 139.000 30-AUG-06 1-131 (CHEM) 0.337 17-NOV-06 MN-54 1.600 17-NOV-06 CO-58 2.200 17-NOV-06 FE-59 6.000 17-NOV-06 CO-60 3.500 17-NOV-06 ZN-65 4.500 17-NOV-06 ZR-NB-95 3.500 17-NOV-06 CS- 134 2.500 17-NOV-06 CS-137 3 .100 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 41

Exposure Pathway - Waterborne Ground Water Location G-2

!Collection Nuclide

• Concentration Duplicate

-Date .(pCilLiter) Analysis 17-NOV-06 BA- LA- 140 < 2.500 17-NOV-06 H-3 < 169.000 17-NOV-06 1-131 (CHEM) < 0.385 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 42

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide Concentration 'Duplicate Date. (pCilLiter) Analysis MN-54 2.400 01-FEB-06 CO-58 2.800 01-FEB-06 01-FEB-06 FE-59 5.100 CO-60 2.200 01-FEB-06 01-FEB-06 ZN-65 3.300 01-FEB-06 ZR-NB- 95 5.600 CS-134 6.900 01-FEB-06 01-FEB-06 CS-137 3.400 01-FEB-06 BA-LA- 140 3.000 01-FEB-06 H-3 183 .000 01-FEB-06 1-131 (CHEM) 0.295 10-MAY-06 MN-54 4.400 10-MAY-06 CO-58 6.000 10- MAY - 06 FE-59 8.100 10-MAY-06 CO-60 6.400 10-MAY- 06 ZN-65 13 .000 10-MAY-06 ZR-NB- 95 6.800 10-MAY-06 CS-134 6.200 10- MAY - 06 CS-137 4.800 10-MAY-06 BA-LA- 140 7.000 10- MAY - 06 H-3 129.000 10-MAY- 06 1-131 (CHEM) 0.296 30-AUG-06 MN-54 3.400 MN-54 3.300 Duplicate 30-AUG- 06 30-AUG- 06 CO-58 3.900 C0-S8 3.800 Duplicate 30-AUG-06 30-AUG-06 FE-59 8.300 FE-59 3 .500 Duplicate 30 -AUG- 06 30-AUG-06 CO-60 2.200 CO-60 2.100 Duplicate 30-AUG-06 30 -AUG- 06 ZN-65 4 .700 ZN-65 4.000 Duplicate 30-AUG-06 30-AUG-06 ZR-NB- 95 4 .900 ZR-NB- 95 4 .500 Duplicate 30-AUG-06 30-AUG-06 CS-134 4.600 CS-134 3.300 Duplicate 30-AUG-06 30-AUG-06 CS-137 5.800 CS-137 4.100 Duplicate 30-AUG-06 30 -AUG- 06 BA-LA- 140 6.100 BA- LA- 140 6.000 Duplicate 30-AUG-06 30-AUG-06 H-3 139.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 43

Exposure Pathway - Waterborne Ground Water Location J-1 Collection Nuclide.,' .. Concentration ,Duplicate Date (pCi/Liter). .Analysis 30-AUG-06 < 139.000 Duplicate 30-AUG-06 1-131 (CHEM) < 0.478 30-AUG-06 1-131 (CHEM) < 0.359 Duplicate 17-NOV-06 MN-54 < 3.500 17-NOV-06 CO-58 < 2.900 17-NOV-06 FE-59 < 5.800 17-NOV-06 CO-60 < 3.300 17-NOV-06 ZN-65 < 7.100 17-NOV-06 ZR-NB-95 < 3.900 17-NOV-06 CS-134 < 3.100 17-NOV-06 CS-137 < 2.800 17-NOV-06 BA-LA- 140 < 2.900 17-NOV-06 H-3 < 169.000 17-NOV-06 1-131 (CHEM) < 0.368 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 44

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Concentration Duplicate Date (pCilLiter) Analysis 01-FEB-06 MN-54 4.000 01-FEB-06 CO-58 3.500 01-FEB-06 FE-S9 13.200 01-FEB-06 CO-60 4.600 01-FEB-06 ZN-65 9.300 01-FEB-06 ZR-NB- 95 5.600 01-FEB-06 CS-134 4.300 01-FEB-06 CS-137 5.500 01-FEB-06 BA-LA-140 4.900 01-FEB-06 H-3 183.000 01-FEB-06 1-131 (CHEM) 0 297 101-MAY - 06 MN-54 4.800 10-MAY- 06 CO-58 3.800 10-MAY - 06 FE-59 8.500 10-MAY-06 CO-60 3 .700 10-MAY- 06 ZN-65 8.400 10-MAY-06 ZR-NB- 95 6.900 10 -MAY -06 CS-134 2.700 10-MAY-06 CS-137 1.800 10-MAY- 06 BA-LA- 140 6.100 10-MAY - 06 H-3 140.000 10-MAY- 06 1-131 (CHEM) 0.234 30 -AUGY-06 MN-54 2.200 30-AUG-06 CO-58 2.700 30-AUG-06 FE-59 3.800 30-AUG-06 CO-60 2 .100 30-AUG- 06 ZN-65 2.500 30-AUG-06 ZR-NB-95 3.600 30-AUG-06 CS- 134 3.200 30-AUG-06 CS-137 4.000 30-AUG-06 BA-LA- 140 4.000 30 -AUG- 06 H-3 139.000 30-AUG-06 1-131 (CHEM) 0.347 17 -NOV- 06 MN-54 5.000 17-NOV-06 CO-58 3.300 17-NOV-06 FE-59 5.800 17-NOV-06 CO-60 3.800 17-NOV-06 ZN-65 4.000 17-NOV-06 ZR-NB- 95 4.700 17-NOV- 06 CS-134 3 .100 17-NOV-06 CS-137 4.500 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 45

Exposure Pathway - Waterborne Ground Water Location J-2 Collection Nuclide Choncentration +Duplicate Date (pCilLiter) Analysis 17-NOV-06 BA-LA-140 < 6.000 17-NOV-06 H-3 < 171.000 17-NOV-06 1-131 (CHEM) < 0.356 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 46

Exposure Pathway - Waterborne Ground Water Location L-49 Collection.' Nuclide Concentration Duplicate Date (pCi/Liter)i*. Analysis 01-FEB-06 MN-54 3.000 01-FEB-06 CO-58 4.600 01-FEB-06 FE-59 5.200 01-FEB-06 CO-60 2.800 01-FEB-06 ZN-65 8.300 01-FEB-06 ZR-NB- 95 3.700 01-FEB-06 CS-134 5.500 01-FEB-06 CS-137 4.200 01-FEB-06 BA-LA- 140 4.100 01-FEB-06 H-3 183.000 01-FEB-06 1-131 (CHEM) 0.351 10-MAY-06 MN-54 3.600 10-MAY-06 CO-58 3.300 10-MAY-06 FE-59 8.000 10-MAY-06 CO-60 3.800 10-MAY-06 ZN-65 6.900 10-MAY-06 ZR-NB-95 5.600 10-MAY-06 CS-134 5.300 10-MAY-06 CS-137 5.800 10-MAY-06 BA-LA-140 3.200 10-MAY- 06 H-3 167.000 10-MAY- 06 1-131 (CHEM) 0.339 30-AUG-06 MN-54 5.700 30 -AUG- 06 CO-58 3.500 30-AUG-06 FE-59 5.300 30-AUG-06 CO-60 2.600 30-AUG-06 ZN-65 4 .800 30-AUG-06 ZR-NB-95 4 .900 30-AUG-06 CS-134 4.400 30 -AUG- 06 CS-137 4.100 30 -AUG- 06 BA-LA-140 3.600 30 -AUG- 06 H-3 139.000 30-AUG-06 1-131 (CHEM) 0.370 17-NOV-06 MN-54 3.000 17 -NOV- 06 CO-58 3.600 17 -NOV- 06 FE-59 7.500 17-NOV-06 CO-60 4.900 17 -NOV- 06 ZN-65 4.800 17-NOV-06 ZR-NB- 95 6.000 17-NOV-06 CS-134 4.800 17-NOV-06 CS-137 5.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 47

Exposure Pathway - Waterborne Ground Water Location L-49 Collection Nuclide .:Concentration Duplicate Date .: .(pCilLiter) ,Analysis 17-NOV-06 BA-LA- 140 7.700 17-NOV-06 H-3 169.000 17-NOV-06 1-131 (CHEM) 0.397 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 48

Exposure Pathway - Waterborne Drinking Water Location BW-15

..Collection Nuclide Concentration

>;~-Pr'/Lite'r).,L=

Duplicate,.

Date Analysis 01-FEB-06 MN-54 3.100 01-FEB-06 MN-54 5.900 Duplicate 01-FEB-06 CO-58 2.700 01-FEB-06 CO-58 5.300 Duplicate 01-FEB-06 FE-59 5.400 01-FEB-06 FE-59 8.700 Duplicate 01-FEB-06 CO-60 4.200 01-FEB-06 CO-60 1.500 Duplicate 01- FEB -06 ZN-65 2.600 01-FEB-06 ZN-65 9.400 Duplicate 01-FEB-06 ZR-NB-95 5.100 01 -FEB- 06 ZR-NB-95 7.000 Duplicate 01-FEB-06 CS-134 3.000 01-FEB-06 CS-134 5.100 Duplicate 01-FEB-06 CS-137 3.100 01-FEB-06 CS-137 4.200 Duplicate 01-FEB-06 BA-LA-140 2.900 01-FEB-06 BA-LA-140 4.200 Duplicate 01-FEB-06 GROSS BETA 3.072+/- 1.159 01-FEB-06 GROSS BETA 2.552+!- 1.101 Duplicate 01-FEB-06 1-131 (CHEM) 0.415 01-FEB-06 1-131 (CHEM) 0.422 Duplicate 01-FMAR- 06 MN-54 3 .500 01-MAR-06 CO-58 1.600 01-MAR-06 FE-59 3 .700 01-MAR-06 CO-60 3 .700 01-MAR-06 ZN-65 5 .000 01-MAR-06 ZR-NB-95 5.400 01-MAR-06 CS-134 3.400 01-MAR-06 CS-137 2.400 01-MAR-06 BA-LA- 140 2.400 01-MAR-06 GROSS BETA 2.455+/ 0.652 01-MARF-06 1-131 (CHEM) 0.371 05-APR-06 MN-54 4.400 05-APR-06 CO-58 4.800 05-APR-06 FE-59 6.800 05-APR-06 CO-60 4.000 05-APR-06 ZN-65 5.200 05-APR-06 ZR-NB- 95 3.900 05-APR-06 CS- 134 2.900 05-APR-06 CS-137 6.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 49

Exposure Pathway - Waterborne Drinking Water Location BW-1 5

.'Collection 0..Nuclide- Concentration Duplicate Date (pCi/Liter) Analysis 05-APR-06 BA-LA-140 3.200 05-APR-06 GROSS BETA 2.651+/- 0.519 05-APR-06 1-131 (CHEM) < 0.336 03-MAY-06 MN-54 < 2.900 03-MAY-06 CO-58 < 2.500 03-MAY-06 FE-59 < 6.300 03-MAY-06 CO-60 < 1.300 03-MAY-06 ZN-65 < 3.000 03-MAY-06 ZR-NB-95 < 2.700 03-MAY-06 CS-134 < 2.300 03-MAY-06 CS-137 < 3.000 03-MAY-06 BA-LA-140 < 1.900 03-MAY-06 GROSS BETA 5.108+/- 1.232 03-MAY-06 1-131 (CHEM) < 0.283 07-JUN-06 MN-54 < 4.500 07-JUN-06 CO-58 < 2.300 07-JUN-06 FE-59 < 6.000 07-JUN-06 CO-60 < 5.400 07-JUN-06 ZN-65 < 9.000 07-JUN-06 ZR-NB-95 < 3.500 07-JUN-06 CS-134 < 5.700 07-JUN-06 CS-137 < 4.000 07-JUN-06 BA-LA-140 < 4.400 07-JUN-06 GROSS BETA 3.982+/- 0.760 07-JUN-06 1-131 (CHEM) < 0.456 06-JUL-06 MN-54 < 1.000 06-JUL-06 CO-S8 < 0.900 06-JUL-06 FE-59 < 1.500 06-JUL-06 CO-60 < 1.000 06-JUL-06 ZN-65 < 2.100 06-JUL-06 ZR-NB-95 < 1.100 06-JUL-06 CS-134 < 0.900 06-JUL-06 CS-137 < 1.300 06-JUL-06 BA-LA-140 < 1.000 06-JUL-06 GROSS BETA 4.108+/- 1.108 06-JUL-06 1-131 (CHEM) < 0.299 02-AUG-06 MN-54 < 4.500 02-AUG-06 CO-58 < 4.300 02-AUG-06 FE-59 < 4.400 02-AUG-06 CO-60 < 2.500 02-AUG-06 ZN-65 < 4.700 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 50

Exposure Pathway - Waterborne Drinking Water Location BW-1 5 Collection :Nuclide., Concentration Duplicate I (pCilLiter) Analysisý Date ZR-NB-95 < 4.700 02 -AUG-06 CS-134 < 5.600 02-AUG-06 CS-137 < 5.500 02-AUG-06 02-AUG-06 BA-LA-140 < 3 500 02-AUG-06 GROSS BETA 3.327 +/- 0.708 1-131 (CHEM) < 0.259 02-AUG- 06 07-SEP-06 MN-54 < 4 .500 07-SEP-06 CO-58 < 3.300 FE-59 < 6.800 07-SEP-06 07-SEP-06 CO-60 < 1.700 07-SEP-06 ZN-65 < 2.900 07-SEP-06 ZR-NB-95 < 3.600 07-SEP-06 CS-134 < 3.600 07-SEP-06 CS-137 < 3.200 07-SEP-06 BA-LA-140 < 5.000 07-SEP-06 GROSS BETA 5.201 +/- 1.073 07-SEP-06 1-131 (CHEM) < 0.354 03-OCT-06 MN-54 < 3.000 03-OCT-06 CO-58 < 3 .100 03-OCT-06 FE-59 < 6.600 03-OCT-06 CO-60 < 2.200 03-OCT-06 ZN-65 < 5.500 03-OCT-06 ZR-NB-95 < 3.600 03-OCT-06 CS-134 < 3.100 03-OCT-06 CS-137 < 4.700 03-OCT-06 BA-LA-140 < 2.500 03-OCT-06 GROSS BETA 5.302+ /I- 0.817 03-OCT-06 1-131 (CHEM) < 0.475 01-NOV-06 MN-54 < 4.900 01-NOV-06 CO-58 < 6.900 01-NOV-06 FE-59 < 7.700 01-NOV-06 CO-60 < 4.700 01-NOV-06 ZN-65 < 8.300 01-NOV-06 ZR-NB-95 < 3.200 01-NOV-06 CS-134 < 5.900 CS-137 < 6.100 01-NOV-06 01-NOV-06 BA-LA-140 < 7.100 01-NOV-06 GROSS BETA 3.037+ 1.087 01-NOV-06 1-131 (CHEM) < 0.294 05-DEC-06 MN-54 < 2.200 05-DEC-06 CO-58 < 3.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 51

Exposure Pathway - Waterborne Drinking Water Location BW-15 Collection Nuclide Concentration Duplicate::

(pCilLiter) Analysis Date FE-59 2.300 05-DEC-06 CO-60 1.400 05-DEC-06 05-DEC-06 ZN-65 1. 900 ZR-NB- 95 4 .200 05-DEC-06 CS-134 3 .400 05-DEC-06 CS-137 4 .000 05-DEC-06 BA-LA- 140 2.700 05-DEC-06 GROSS BETA 3.112+/- 0.697 05-DEC-06 1-131 (CHEM) 0.499 05-DEC-06 04-JAN-07 MN-54 5.400 CO-58 3 .100 04 -JAN- 07 FE-59 5.700 04-JAN-07 04-JAN-07 CO-60 4 .200 04 - JAN- 07 ZN-65 5.600 04-JAN-07 ZR-NB- 95 5.100 CS-134 3.500 04-JAN-07 CS-137 3.200 04-JAN-07 BA-LA-140 3 .600 04 -JAN-07 04 -JAN-07 GROSS BETA 6.460+/-/- 1.343 04-JAN-07 1-131 (CHEM) 0.248 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 52

Exposure Pathway - Waterborne Drinking Water Location 10-DW Collection Nuclide .Concentration Duplicate Date (pCilLiter) Analysis 01-FEB-06 MN-54 < 4.300 01-FEB-06 CO- 58 < 2.200 01-FEB-06 FE- 59 < 3.900 01-FEB-06 CO-60 < 2.800 01-FEB-06 ZN-65 < 9.000 01-FEB-06 ZR-NB- 95 < 4.400 01-FEB-06 CS-134 < 4.100 01-FEB-06 CS-137 < 4.900 01-FEB-06 BA-LA- 140 < 6.100 01-FEB-06 GROSS BETA 2.749 +/- 0.692 01-FEB-06 1-131 (CHEM) < 0.334 01-MAR-06 MN-54 < 5.300 01-MAR-06 CO-58 < 5.200 01-MAR-06 FE-59 < 4.200 01-MAR-06 CO-60 < 5.100 01-MAR-06 ZN-65 < 10.800 01-MAR-06 ZR-NB- 95 < 5.000 01-MAR-06 CS-134 < 3.900 01-MAR-06 CS-137 < 4.900 01-MAR-06 BA-LA-140 < 3 .200 01-MAR-06 GROSS BETA 2.417 +/- 0.670 01-MAR-06 1-131 (CHEM) < 0.292 05-APR-06 MN-54 < 4.500 05-APR-06 CO-58 < 3.500 05-APR-06 FE-59 < 9.500 05-APR-06 CO-60 < 3 .700 05-APR-06 ZN-65 < 3.200 05-APR-06 ZR-NB-95 < 6.400 05-APR-06 CS-134 < 4.900 05-APR-06 CS-137 < 5.500 05-APR-06 BA-LA-140 < 7.100 05-APR- 06 GROSS BETA 2.447 +/- 0.498 05-APR- 06 1-131 (CHEM) < 0.321 03-MAY-06 MN-54 < 4.100 03 -MAY-06 CO-58 < .5000 03 -MAY- 06 FE-59 < 6.000 03-MAY-06 CO-60 < 4.900 03 -MAY- 06 ZN-65 < S.300 03 -MAY-06 ZR-NB- 95 < 3.400 03 -MAY- 06 CS-134 < S.100 03-MAY-06 CS-137 < 4.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 53

Exposure Pathway - Waterborne Drinking Water Location IO-DW

'Collection Nuclide Concentration Duplicate Dateln- (pCi/Liter) Analysis 03 -MAY-06 BA-LA-140 3 .300 03 -MAY-06 GROSS BETA 5.233+/- 1.135 03 -MAY-06 1-131 (CHEM) 0 .292 07-JUN- 06 MN-54 2.200 07-JUN-06 CO-58 1 .500 07-JUN -06 FE-59 4 .000 07-JUN- 06 CO-60 3.300 07-JUN-06 ZN-65 2.400 07-JUN-06 ZR-NB-95 2.700 07-JUN-06 CS-134 2.700 07-JUN- 06 CS-137 1.700 07-JUN-06 BA-LA-140 3.400 07-JUN-06 GROSS BETA 3.720+/- 0.755 07-JUN-06 1-131 (CHEM) 0.336 06-JUL-06 MN-54 2.000 06 -JUL- 06 CO-58 1.900 06-JUL-06 FE-S9 3.700 06-JUL-06 CO-60 2.300 06-JUL-06 ZN-65 4.700 06-JUL-06 ZR-NB-95 2.500 06-JUL-06 CS-134 1.800 06-JUL-06 CS-137 2.200 06-JUL-06 BA-LA-140 1.800 06-JUL-06 GROSS BETA 3.824+/- 1.159 06 -JUL- 06 1-131 (CHEM) 0.365 02 -AUG- 06 MN-54 3 .100 02 -AUG- 06 CO-58 3 .600 02-AUG-06 FE-59 2 .700 02-AUG-06 CO-60 1.800 02 -AUG- 06 ZN-65 5.200 02 -AUG- 06 ZR-NB-95 3.300 02-AUG-06 CS-134 3.900 02-AUG-06 CS-137 4.100 02-AUG-06 BA-LA-140 4.400 02 -AUG- 06 GROSS BETA 3.130+!- 0.718 02-AUG- 06 1-131 (CHEM) 0.273 07-SEP-06 MN-54 3.800 07-SEP-06 CO-58 2.300 07-SEP-06 FE-59 8.800 07-SEP-06 CO-60 3.200 07-SEP-06 ZN-65 8.500 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 54

Exposure Pathway - Waterborne Drinking Water Location IO-DW

'Collection Nuclide Concentration Duplicate Date (pCi/Liter) Analysis 07-SEP-06 ZR-NB- 95 3.000 07-SEP-06 CS-134 4.600 07-SEP-06 CS-137 3.500 07-SEP-06 BA-LA- 140 2 .700 07-SEP-06 GROSS BETA 7.692+/- 1.332 07-SEP-06 1-131 (CHEM) 0.393 03 -OCT-06 MN-54 4 .200 03-OCT-06 CO-58 2 .800 03-OCT-06 FE-59 7.200 03-OCT-06 CO-60 1.900 03-OCT-06 ZN-65 3.600 03-OCT-06 ZR-NB- 95 3.400 03-OCT-06 CS-134 3.700 03 -OCT-06 CS-137 3.000 03-OCT-06 BA-LA- 140 4.500 03-OCT-06 GROSS BETA 2.808+/ - 0.716 03 -OCT- 06 1-131 (CHEM) 0.490 01 -NOV- 06 MN-54 4 .900 01-NOV-06 CO-58 4.200 01-NOV-06 FE-S9 4.000 01 -NOV- 06 CO-60 4.900 01-NOV-06 ZN-65 8.300 01-NOV- 06 ZR-NB- 95 5.500 01-NOV-06 CS-134 3.300 01-NOV- 06 CS-137 4 .500 01-NOV-06 BA-LA- 140 7.400 01-NOV-06 GROSS BETA 5.403+!- 1.137 01-NOV-06 1-131 (CHEM) 0.345 05-DEC-06 MN-54 2.300 05-DEC-06 CO-58 1.500 05-DEC-06 FE-59 4.100 05-DEC-06 CO-60 3.300 05-DEC-06 ZN- 65 5.700 05-DEC-06 ZR-NB- 95 3.500 05-DEC-06 CS-134 3.800 05-DEC-06 CS-137 3.200 05-DEC-06 BA-LA-140 2.700 05-DEC-06 GROSS BETA 3.364+/- 0.753 05-DEC-06 1-131 (CHEM) 0.393 04 -JAN-07 MN-54 2.800 04 -JAN-07 CO-58 4.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 55

Exposure Pathway - Waterborne Drinking Water Location 1O-DW Collection Nuclide Concentration, Duplicate Date (pCi/Liter) .Analysis 04 -JAN- 07 FE-59 < 6.800 04-JAN-07 CO-60 < 5.100 04 -JAN-07 ZN-65 < 7.800 04-JAN -07 ZR-NB- 95 < 4.800 04 -JAN-07 CS-134 < 4.300 04- JAN- 07 CS-137 < 4.200 04-JAN- 07 BA-LA- 140 < 5.200 04 -JAN- 07 GROSS BETA 4.562+/- 1-199 04 -JAN-07 1-131 (CHEM) < 0.385 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 56

Exposure Pathway - Waterborne Drinking Water Location NF-DW Collection Nuclide Concentration Duplicate Date: (pCi/Liter) Analysis 01-FEB-06 MN-54 < 4.100 01-FEB-06 CO-58 < 3.900 01-FEB-06 FE-59 < 7.300 01-FEB-06 CO-60 < 2.800 01-FEB-06 ZN-65 < 6.900 01-FEB-06 ZR-NB-95 < 5.600 01-FEB-06 CS-134 < 6.400 01-FEB-06 CS-137 < 5.400 01-FEB-06 BA-LA-140 < 3.300 01-FEB-06 GROSS BETA 2.976+/- 0.713 01-FEB-06 1-131 (CHEM) < 0.303 01-MAR-06 MN-54 < 3.800 01-MAR-06 CO-58 < 3.400 01-MAR-06 FE-59 < 6.200 01-MAR-06 CO-60 < 2.700 01-MAR-06 ZN-65 < 4.200 01-MAR-06 ZR-NB-95 < 4.500 01-MAR-06 CS-134 < 2.600 01-MAR-06 CS-137 < 3.000 01-MAR-06 BA-LA-140 < 3.200 01-MAR-06 GROSS BETA 3.270+/- 0.742 01-MAR-06 1-131 (CHEM) < 0.297 05-APR-06 MN-54 < 4.200 05-APR-06 CO-58 < 4.500 05-APR-06 FE-59 < 3.600 05-APR-06 CO-60 < 6.000 05-APR-06 ZN-65 < 5.900 05-APR-06 ZR-NB-95 < 3.700 05-APR-06 CS-134 < 3.300 05-APR-06 CS-137 < 3.800 05-APR-06 BA-LA-140 < 6.100 05-APR-06 GROSS BETA 2.232+/- 0.486 05-APR-06 1-131 (CHEM) < 0.329 03-MAY-06 MN-54 < 4.100 03-MAY-06 CO-58 < 3.900 03-MAY-06 FE-59 < 7.500 03-MAY-06 CO-60 < 5.700 03-MAY-06 ZN-65 < 5.700 03-MAY-06 ZR-NB-95 < 3.300 03-MAY-06 CS-134 < 3.700 03-MAY-06 CS-137 < 3.200 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 57

Exposure Pathway - Waterborne Drinking Water Location NF-DW Collection Nuclide Concentration Duplicate

'"Date .(pCilLiter) Analysis 03 -MAY-06 BA-LA- 140 < 5.700 03 -MAY-06 GROSS BETA 3.476+/- 1.150 03 -MAY-06 1-131 (CHEM) < 0.356 07 -JUN- 06 MN-54 < 5.000 07-JUN- 06 CO-58 < 3.200 07-JUN-06 FE-59 < 7.300 07-JJUN-06 CO-60 < 3.900 07-JUN-06 ZN-65 < 12.900 07-JUN-06 ZR-NB- 95 < 4.300 07-JUN-06 CS -134 < 2.200 07- JUN-06 CS-137 ,< 5.100 07-JUN-06 BA-LA- 140 < 3.500 07-JUN-06 GROSS BETA 6.164+/- 1.278 07- JUN- 06 1-131 (CHEM) < 0.347 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 58

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location BW-1 5 Collection 1. Nuclide Concentration Duplicate SDate (pCilLiter), Analysis 05-APR-06 H-3

• 130.000 06 -JUL-06 H-3

• 171.000 03-OCT-06 H-3

• 161.000 04 - JAN-07 H-3

• 152.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 59

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location 10-DW Collection Nuclide ,Concentration Duplicate Date,. (pCi/Liter)" AnalySis 05-APR-06 H-3

• 130.000 06-JUL-06 H-3

• 171.000 03-OCT-06 H-3

• 161.000 04 -JAN-07 H-3

• 152.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 60

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location NF-DW Collection Nuclide Concentration Duplicate.

Date (pCilhiter) Analysis 05-APR-06 H-3

• 130.000 07-JUN-06 H-3

• 172.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 61

Exposure Pathway - Waterborne Shoreline Sediment Location DC Gamma Spectrum Concentration Duplicate Collection Nuclide

• 1Date_. (pCiIKg Dry) Analysis 19-MAY-06 K-40 12123.000+1- 735.200 19-MAY-06 MN-54 < 25.600 19-MAY-06 CO-58 < 18.900 19-MAY - 06 FE-59 < 38.600 19-MAY-06 CO-60 < 17.400 19 -MAY- 06 ZN-65 < 52.800 19-MAY-06 CS-134 < 40.400 19-MAY- 06 CS-137 < 27.600 25-OCT-06 K-40 11521.000+/- 965.700 25-OCT-06 MN-54 < 27.500 25-OCT-06 CO-58 < 34.300 25-OCT-06 FE-59 < 95.500 25-OCT-06 CO-60 < 16.700 25-OCT-06 ZN-65 < 84.400 25-OCT-06 CS-134 < 53.500 25-OCT-06 CS-137 < 35.600 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 62

Exposure Pathway - Waterborne Shoreline Sediment Location JRR Gamma Spectrum Collection *Nuclide Concentration. Duplicate Date  ;(pCi/Kg Dry) Analysis 19-MAY-06 K-40 7107.100+/- 856.900 19-MAY-06 MN-54 38.200 19-MAY- 06 CO-58 31.800 19-MAY-06 FE-59 26.300 19-MAY-06 CO-60 34.100 19-MAY-06 ZN-65 57.600 19- MAY- 06 CS-134 44.400 19 -MAY-06 CS-137 39.000 27-NOV-06 K-40 11308. 000 +/- 792.800 27-NOV-06 MN-54 31.200 27-NOV-06 CO-58 35.900 27-NOV- 06 FE-59 65.000 27-NOV- 06 CO-60 23.600 27-NOV-06 ZN-65 77.100 27-NOV-06 CS-134 45.200 27-NOV-06 CS-137 21.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 63

Exposure Pathway - Ingestion Fish Location CCL Gamma Spectrum & H-3 Collection Sample Nuclide Concentration Duplicate Date Description (pCilKg.Wet) Analysis 19-MAY - 06 CHANNEL CATFISH K-40 3603.200+/- 437.500 19-MAY- 06 CHANNEL CATFISH MN-54 < 21.200 19-MAY- 06 CHANNEL CATFISH CO- 58 < 17.800 19-MAY- 06 CHANNEL CATFISH FE-59 < 22.900 19-MAY-06 CHANNEL CATFISH CO-60 < 18.400 19-MAY- 06 CHANNEL CATFISH ZN-65 < 23 .500 19-MAY-06 CHANNEL CATFISH CS-134 < 18.500 19-MAY- 06 CHANNEL CATFISH CS-137 < 16.600 19-MAY- 06 CHANNEL CATFISH H-3 6534.000+/- 197.000 19-MAY-06 COMMON CARP K-40 3369.400+/- 589.000 19-MAY-06 COMMON CARP K-40 3051.000+/- 396.000 Duplicate 19-MAY- 06 COMMON CARP MN-54 < 19.300 19-MAY-06 COMMON CARP MN-54 < 17.700 Duplicate 19-MAY- 06 COMMON CARP CO-58 < 26.000 19-MAY-06 COMMON CARP CO-58 < 9.200 Duplicate 19-MAY- 06 COMMON CARP FE-S9 < 51.700 19-MAY-06 COMMON CARP FE-59 < 25.300 Duplicate 19-MAY-06 COMMON CARP CO-60 < 25.000 19-MAY- 06 COMMON CARP CO-60 < 20.000 Duplicate 19-MAY-06 COMMON CARP ZN-65 < 27.500 19-MAY-06 COMMON CARP ZN- 65 < 21.500 Duplicate 19-MAY- 06 COMMON CARP CS-134 < 17.200 19-MAY-06 COMMON CARP CS-134 < 11.300 Duplicate 19-MAY-06 COMMON CARP CS-137 < 18.800 19-MAY-06 COMMON CARP CS-137 < 16.500 Duplicate 19-MAY-06 COMMON CARP H-3 6389.000+/- 197.000 19-MAY- 06 COMMON CARP H-3 6462.000+/- 198.000 Duplicate 19-MAY- 06 FRESHWATER DRUM K-40 3777.300+/- 637.300 19-MAY-06 FRESHWATER DRUM MN-54 < 27.600 19-MAY-06 FRESHWATER DRUM CO- 58 < 21.600 19-MAY-06 FRESHWATER DRUM FE-59 < 73.600 19-MAY-06 FRESHWATER DRUM CO-60 < 28.100 19-MAY- 06 FRESHWATER DRUM ZN-65 < 44.400 19-MAY-06 FRESHWATER DRUM CS-134 < 11.600 19-MAY-06 FRESHWATER DRUM CS-137 < 11.800 19-MAY- 06 FRESHWATER DRUM H-3 5733.000+/- 175.000 19-MAY-06 SMALLMOUTH BASS K-40 3939.000+/- 682.200 19-MAY- 06 SMALLMOUTH BASS MN-54 < 29.300 19-MAY-06 SMALLMOUTH BASS CO-58 < 14.800 19-MAY- 06 SMALLMOUTH BASS FE-59 < 36.400 19-MAY-06 SMALLMOUTH BASS CO-60 < 21.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 64

Exposure Pathway - Ingestion Fish Location CCL Gamma.Spectrum & H-3

Concentration,*.. Duplicate Collection Sample . Nuclide

• Date Description (pCi/Kg Wet) Analysis 19-MAY- 06 SMALLMOUTH BASS ZN-65 < 31.200 19-MAY-06 SMALLMOUTH BASS CS-134 < 19.400 19-MAY-06 SMALLMOUTH BASS CS-137 < 21.900 19-MAY- 06 SMALLMOUTH BASS H-3 7175.000+/- 209.000 19-MAY-06 SMALLMOUTH BUFFALO K-40 3126.500+/- 532.300 19-MAY -06 SMALLMOUTH BUFFALO MN-54 < 25.600 19-MAY-06 SMALLMOUTH BUFFALO CO-58 < 19.000 19-MAY- 06 SMALLMOUTH BUFFALO FE-59 < 29.400 19-MAY- 06 SMALLMOUTH BUFFALO CO-60 < 18.900 19-MAY-06 SMALLMOUTH BUFFALO ZN-65 < 55.600 19-MAY-06 SMALLMOUTH BUFFALO CS-134 < 16.000 19-MAY-06 SMALLMOUTH BUFFALO CS-137 < 24.300 19-MAY-06 SMALLMOUTH BUFFALO H-3 6273.000+/- 188.000 12-OCT-06 CHANNEL CATFISH K-40 3519.400+/- 474.100 12-OCT-06 CHANNEL CATFISH MN-54 < 13.700 12-OCT-06 CHANNEL CATFISH CO-58 < 22.200 12-OCT-06 CHANNEL CATFISH FE-59 < 68.800 12-OCT-06 CHANNEL CATFISH CO-60 < 20.000 12-OCT-06 CHANNEL CATFISH ZN-65 < 25.700 12-OCT-06 CHANNEL CATFISH CS-134 < 15.500 12-OCT-06 CHANNEL CATFISH CS-137 < 16.700 12-OCT-06 CHANNEL CATFISH H-3 12694.000+/- 270.000 12-OCT-06 COMMON CARP K-40 2957.900+/- 495.200 12-OCT-06 COMMON CARP MN-54 < 20.200 12 -OCT- 06 COMMON CARP CO-58 < 24.100 12-OCT-06 COMMON CARP FE-S9 < 55.500 12-OCT-06 COMMON CARP CO-60 < 23.400 12-OCT-06 COMMON CARP ZN-65 < 58.900 12-OCT-06 COMMON CARP CS-134 < 16.200 12-OCT-06 COMMON CARP CS-137 < 20.000 12-OCT-06 COMMON CARP H-3 9642.000+/- 241.000 12-OCT-06 SMALLMOUTH BUFFALO K-40 3476.500+/- 569.600 12-OCT-06 SMALLMOUTH BUFFALO K-40 3056.700+/- 405.700 Duplicate 12-OCT-06 SMALLMOUTH BUFFALO MN-54 < 15.900 12-OCT-06 SMALLMOUTH BUFFALO MN-54 < 15.100 Duplicate 12-OCT-06 SMALLMOUTH BUFFALO CO- 58 < 15.600 12-OCT-06 SMALLMOUTH BUFFALO CO-58 < 15.800 Duplicate 12-OCT-06 SMALLMOUTH BUFFALO FE-59 < 33.700 12-OCT-06 SMALLMOUTH BUFFALO FE-S9 < 28.800 Duplicate 12-OCT-06 SMALLMOUTH BUFFALO CO-60 < 24.800 12-OCT-06 SMALLMOUTH BUFFALO CO-60 < 12.400 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 65

Exposure Pathway - Ingestion Fish Location CCL Gamma Spectrum & H-3 Collection Sample Nuclide vConcentration 'Duplicate Date,'. Description (pCi/Kg Wet) Analysis 12-OCT-06 SMALLMOUTH BUFFALO ZN-65 < 37.900 12-OCT-06 SMALLMOUTH BUFFALO ZN-6S < 37.500 Duplicate 12-OCT-06 SMALLMOUTH BUFFALO CS-134 < 16.000 12-OCT-06 SMALLMOUTH BUFFALO CS-134 < 11.900 Duplicate 12-OCT-06 SMALLMOUTH BUFFALO CS-137 < 21.200 12-OCT-06 SMALLMOUTH BUFFALO CS-137 < 13.300 Duplicate 12-OCT-06 SMALLMOUTH BUFFALO H-3 12513.000+/- 247.000 12-OCT-06 SMALLMOUTH BUFFALO H-3 13366.000+/- 254.000 Duplicate 12-OCT-06 WHITE BASS K-40 3757.100+/- 647.000 12-OCT-06 WHITE BASS MN-54 < 18.200 12-OCT-06 WHITE BASS CO- 58 < 19.500 12-OCT-06 WHITE BASS FE-S9 < 51.400 12-OCT-06 WHITE BASS CO-60 < 26.800 12-OCT-06 WHITE BASS ZN-65 < 21.700 12-OCT-06 WHITE BASS CS-134 < 19.000 12-OCT-06 WHITE BASS CS-137 < 22.500 12-OCT-06 WHITE BASS H-3 14745.000+/- 291.000 12-OCT-06 WIPER K-40 3503.800+/- 417.500 12-OCT-06 WIPER MN-54 < 12.100 12-OCT-06 WIPER CO-58 < 9.700 12-OCT-06 WIPER FE-59 < 41.900 12-OCT-06 WIPER CO-60 < 10.500 12-OCT-06 WIPER ZN-65 < 15.800 12-OCT-06 WIPER CS-134 < 13.400 12-OCT-06 WIPER CS-137 < 8.900 12-OCT-06 WIPER H-3 13021.000+/- 263.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 66

Exposure Pathway - Ingestion Fish Location JRR Gamma Spectrum & H-'3 Collection Sample 'Nuclide :Concentration.- Duplicate Date Description (pCilKg Wet) Analysis, 19-MAY-06 CHANNEL CATFISH K-40 3867.300+/- 456.800 19-MAY-06 CHANNEL CATFISH MN-54 < 15.300 19-MAY-06 CHANNEL CATFISH CO-58 < 11.700 19-MAY-06 CHANNEL CATFISH FE-59 < 18.100 19-MAY-06 CHANNEL CATFISH CO-60 < 19.700 19-MAY-06 CHANNEL CATFISH ZN-65 < 16.700 19-MAY-06 CHANNEL CATFISH CS-134 < 14.200 19-MAY-06 CHANNEL CATFISH CS-137 < 14.900 19-MAY-06 CHANNEL CATFISH H-3 < 108.000 19-MAY-06 COMMON CARP K-40 3210.400+/- 417.400 19-MAY-06 COMMON CARP MN-54 < 16.600 19-MAY-06 COMMON CARP CO-58 < 16.400 19-MAY-06 COMMON CARP FE-59 < 36.100 19-MAY-06 COMMON CARP CO-60 < 10.100 19-MAY-06 COMMON CARP ZN-65 < 28.100 19-MAY-06 COMMON CARP CS-134 < 14.200 19-MAY-06 COMMON CARP CS-137 < 10.300 19-MAY-06 COMMON CARP H-3 < 101.000 19-MAY-06 WHITE CRAPPIE K-40 3429.100+/- 452.000 19-MAY-06 WHITE CRAPPIE MN-54 < 16.600 19-MAY-06 WHITE CRAPPIE CO-58 < 19.200 19-MAY-06 WHITE CRAPPIE FE-59 < 23.500 19-MAY-06 WHITE CRAPPIE CO-60 < 16.100 19-MAY-06 WHITE CRAPPIE ZN-65 < 28.100 19-MAY-06 WHITE CRAPPIE CS-134 < 23.700 19-MAY-06 WHITE CRAPPIE CS-137 < 17.500 19-MAY-06 WHITE CRAPPIE H-3 < 106.000 27-NOV-06 CHANNEL CATFISH K-40 3394.700+/- 397.600 27-NOV-06 CHANNEL CATFISH MN- 54 < 12.700 27-NOV-06 CHANNEL CATFISH CO-58 < 11.100 27-NOV-06 CHANNEL CATFISH FE-59 < 38.400 27-NOV-06 CHANNEL CATFISH CO-60 < 7.100 27-NOV-06 CHANNEL CATFISH ZN-65 < 27.300 27-NOV-06 CHANNEL CATFISH CS-134 < 9.900 27-NOV-06 CHANNEL CATFISH CS-137 < 9.200 27-NOV-06 CHANNEL CATFISH H-3 < 122.000 27-NOV-06 LARGEMOUTH BASS K-40 3472.600+/- 417.800 27-NOV-06 LARGEMOUTH BASS MN-54 < 15.200 27-NOV-06 LARGEMOUTH BASS CO-58 < 9.700 27-NOV-06 LARGEMOUTH BASS FE-59 < 25.300 27-NOV-06 LARGEMOUTH BASS CO-60 < 17.400 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 67

Exposure Pathway - Ingestion Fish Location JRR Gamma Spectrum & H-3 Collection Sample Nuclide Concentration Duplicate.

Date :Description . (pCi/Kg Wet) Analysis 27-NOV-06 LARGEMOUTH BASS ZN-65 < 30.200 27-NOV-06 LARGEMOUTH BASS CS-134 < 5.900 27-NOV-06 LARGEMOUTH- BASS CS-137 < 11.600 27-NOV-06 LARGEMOUTH BASS H-3 < 141.000 27-NOV-06 SMALLMOUTH BUFFALO K-40 3228.200+/- 411.800 27-NOV-06 SMALLMOUTH BUFFALO MN-54 < 9.800 27-NOV-06 SMALLMOUTH BUFFALO CO-58 < 8.800 27-NOV-06 SMALLMOUTH BUFFALO FE-59 < 28.900 27-NOV-06 SMALLMOUTH BUFFALO CO-60 < 10.100 27-NOV-06 ThIALLMOUTH BUFFALO ZN-65 < 18.200 27-NOV-06 SMALLMOUTH BUFFALO CS-134 < 13.600 27-NOV-06 SMALLMOUTH BUFFALO CS-137 < 11.700 27-NOV-06 ~MALLMOUTH BUFFALO H-3 < 150.000 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 68

Exposure Pathway - Ingestion Food/Garden Location D-1 Gamma Spectrum Sample 'Nuclide Concentration Duplicate Collection (pdilKg Wet) Analysis, Date Description 17-MAY-06 RHUBARB BE-7 455.500 +/- 95.200 17-MAY-06 RHUBARB K-40 6906.400 +1- 225.600 MN-54 < 8.700 17-MAY-06 RHUBARB CO-58 < 7.000 17-MAY-06 RHUBARB FE-59 < 16.700 17-MAY-06 RHUBARB CO-60 < 10.200 17-MAY-06 RHUBARB ZN-65 < 15.600 17-MAY-06 RHUBARB ZR-NB-95 < 7.400 17-MAY-06 RHUBARB 1-131 < 9.400 17-MAY-06 RHUBARB CS-134 < 9.100 17-MAY-06 RHUBARB CS-137 < 10.800 17-MAY-06 RHUBARB BE-7 < 245.000 14-JUN-06 RHUBARB 14-JUN-06 RHUBARB K-40 4090.400 +/- 668.500 MN-54 < 22.200 14-JUN-06 RHUBARB CO-58 < 23.400 14-JUN-06 RHUBARB FE-59 < 25.600 14-JUN-06 RHUBARB CO-60 < 31.000 14-JUN-06 RHUBARB ZN-65 < 51.600 14-JUN-06 RHUBARB ZR-NB-95 < 15.600 14-JUN-06 RHUBARB 1-131 < 41.700 14-JUN-06 RHUBARB CS-134 < 20.300 14-JUN-06 RHUBARB CS-137 < 21.400 14-JUN-06 RHUBARB BE-7 249.600 +/- 117.900 12-JUL-06 RHUBARB K-40 3110.200 +/- 302.500 12-JUL-06 RHUBARB MN-54 < 8.500 12-JUL-06 RHUBARB CO-58 < 6.400 12-JUL-06 RHUBARB FE-59 < 25.700 12-JUL-06 RHUBARB CO-60 < 12.200 12-JUL-06 RHUBARB ZN-65 < 12.200 12-JUL-06 RHUBARB ZR-NB-95 < 11.500 12-JUL-06 RHUBARB 1-131 < 27.100 12-JUL-06 RHUBARB CS-134 < 10.700 12-JUL-06 RHUBARB CS-137 < 13.100 12-JUL-06 RHUBARB 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 69

Exposure Pathway - Ingestion Food/Garden Location D-2 Gamma Spectrum

.. Sample Nuclide Concentration Duplicate Collection Description (pCi/Kg Wet):'. -Analysis Date,',

14 -JUN-06 RHUBARB BE-7 539-700 +/- 148.800 K-40 3969.000 +/- 363.100 14-JUN-06 RHUBARB RHUBARB MN-54 < 7.800 14 -JUN- 06 14 -JUN -06 RHUBARB CO-58 < 7.800 RHUBARB FE-59 < 20.500 14 -JUN- 06 14 -JUN -06 RHUBARB CO-60 < 9.400 14- JUTN- 06 RHUBARB ZN-65 < 10.900 14-JUN-06 RHUBARB ZR-NB-95 < 12.300 RHUBARB 1-131 < 16.300 14 -JUN- 06 14- JUN-06 RHUBARB CS-134 < 10.400 14-JUN-06 RHUBARB CS-137 < 8.300 BE-7 613.000 +/- 172.400 12-JUL-06 HORSERADISH LEAVES 12-JUL-06 HORSERADISH LEAVES K-40 4226.100 +/- 362.200 12-JUL- 06 HORSERADISH LEAVES MN-54 < 11.200 CO-58 < 10.000 12-JUL-06 HORSERADISH LEAVES FE-S9 < 24.600 12-JUL-06 HORSERADISH LEAVES CO-60 < 11.000 12-JUL-06 HORSERADISH LEAVES 12-JUL-06 HORSERADISH LEAVES ZN-65 < 29.900 ZR-NB- 95 < 20.500 12-JUL-06 HORSERADISH LEAVES HORSERADISH LEAVES 1-131 < 33.900 12 -JUL-06 CS-134 < 11.700 12-JUL-06 HORSERADISH LEAVES 12-JUL-06 HORSERADISH LEAVES CS-137 < 15.500 09-AUG-06 HORSERADISH LEAVES BE-7 319.900 +/- 104.900 09-AUG-06 HORSERADISH LEAVES K-40 3009.400 +/- 229.500 09-AUG- 06 HORSERADISH LEAVES MN-54 < 8. 000 HORSERADISH LEAVES CO-58 < 5.400 09-AUG-06 09-AUG-06 HORSERADISH LEAVES FE-59 < 12.200 HORSERADISH LEAVES CO-60 < 9.000 09-AUG- 06 HORSERADISH LEAVES ZN-65 < 15.100 09-AUG-06 HORSERADISH LEAVES ZR-NB-95 < 10.100 09-AUG- 06 09-AUG-06 HORSERADISH LEAVES 1-131 < 56.900 09-AUG-06 HORSERADISH LEAVES CS-134 < 5.900 HORSERADISH LEAVES CS-137 < 5.900 09-AUG-06 13-SEP-06 HORSERADISH LEAVES BE-7 658.800 +/- 228.500 13-SEP-06 HORSERADISH LEAVES K-40 5165.800 +/- 564.900 HORSERADISH LEAVES MN-54 < 15.700 13-SEP-06 HORSERADISH LEAVES CO-S8 < 16.400 13-SEP-06 HORSERADISH LEAVES FE-59 < 28.800 13-SEP-06 HORSERADISH LEAVES CO-60 < 15.000 13-SEP-06 13-SEP-06 HORSERADISH LEAVES ZN-65 < 36.200 HORSERADISH LEAVES ZR-NB-95 < 14.900 13-SEP-06 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 70

Exposure Pathway - Ingestion Food/Garden Location D-2 Gamma Spectrum Collection Sample Nuclide, Concentration Duplicate Date Description (pCi/Kg Wet) Analysis 13-SEP-06 HORSERADISH LEAVES 1-131 < 38.400 13-SEP-06 HORSERADISH LEAVES CS-134 < 22.000 13-SEP-06 HORSERADISH LEAVES CS-137 24 .300 08-NOV-06 HORSERADISH LEAVES BE-7 1831.300 +/- 247.800 08-NOV-06 HORSERADISH LEAVES K-40 5985.800 +/- 494.100 08-NOV-06 HORSERADISH LEAVES MN-54 16.600 08-NOV-06 HORSERADISH LEAVES CO-58 < 11.000 08-NOV-06 HORSERADISH LEAVES FE-59 < 29.500 08-NOV-06 HORSERADISH LEAVES CO-60 < 11.300 08-NOV-06 HORSERADISH LEAVES ZN-65 < 21.600 08-NOV-06 HORSERADISH LEAVES ZR-NB-95 < 11.300 08-NOV-06 HORSERADISH LEAVES 1-131 < 28.500 08-NOV-06 HORSERADISH LEAVES CS-134 < 11.200 08-NOV-06 HORSERADISH LEAVES CS-137 < 12.100 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 71

Exposure Pathway - Ingestion Food/Garden Location N-1 Gamma Spectrum Collection Sample Nuclide. Concentration Duplicate Date Description (pCi/KgWet) Analysis 17- MAY - 06 RHUBARB BE-7 781.300 +/- 96.700 17-MAY- 06 RHUBARB K-40 6072.400 +/- 223.600 17-MAY- 06 RHUBARB MN-54 < 5.600 17 -MAY- 06 RHUBARB CO-58 < 5.400 17 -MAY - 06 RHUBARB FE-59 < 15.100 17-MAY- 06 RHUBARB CO-60 < 8.000 17-MAY-06 RHUBARB ZN-65 < 19.000 17- MAY - 06 RHUBARB ZR-NB-95 < 8.400 17-MAY- 06 RHUBARB 1-131 < 9.700 17-MAY-06 RHUBARB CS-134 < 6.300 17-MAY- 06 RHUBARB CS-137 < 8.200 14 -JUN-06 HORSERADISH LEAVES BE-7 727.500 +/- 346.500 14-JUN-06 HORSERADISH LEAVES K-40 5288.300 +/- 565.500 14-JUN- 06 HORSERADISH LEAVES MN-54 < 21.800 14 -JUN- 06 HORSERADISH LEAVES CO-58 < 23.300 14 -JUN-06 HORSERADISH LEAVES FE-59 < 21.500 14 -JUN -06 HORSERADISH LEAVES CO-60 < 22.000 14 -JUN- 06 HORSERADISH LEAVES ZN-65 < 29.000 14 -JUN-06 HORSERADISH LEAVES ZR-NB-95 < 28.500 14 -JUN- 06 HORSERADISH LEAVES 1-131 < 46.600 14- JUN-06 HORSERADISH LEAVES CS-134 < 22.400 14 -JUN-06 HORSERADISH LEAVES CS-137 < 25.500 12-JUL-06 HORSERADISH LEAVES BE-7 570.000 +/- 225.200 12-JUL-06 HORSERADISH LEAVES K-40 4856.400 +/- 544.200 12-JUL-06 HORSERADISH LEAVES MN-54 < 22.200 12-JUL-06 HORSERADISH LEAVES CO-58 < 16.600 12-JUL-06 HORSERADISH LEAVES FE-59 < 24.000 12-JUL-06 HORSERADISH LEAVES CO-60 < 7.900 12-JUL-06 HORSERADISH LEAVES ZN-6S < 30.600 12-JUL-06.: HORSERADISH LEAVES ZR-NB-95 < 19.900 12-JUL-06 HORSERADISH LEAVES 1-131 < 42.700 12-JUL-06 HORSERADISH LEAVES CS-134 < 15.200 12-JUL-06 HORSERADISH LEAVES CS-137 < 17.400 09-AUG-06 HORSERADISH LEAVES BE-7 425.200 +-/- 187.400 09-AUG- 06 HORSERADISH LEAVES K-40 3990.500 +/- 458.400 09-AUG-06 HORSERADISH LEAVES MN-54 < 13.300 09 -AUG- 06 HORSERADISH LEAVES CO-58 < 10.500 09-AUG-06 HORSERADISH LEAVES FE-59 < 26.300 09-AUG-06 }HORSERADISH LEAVES CO-60 < 17.300 09-AUG-06 HORSERADISH LEAVES ZN-65 < 20.600 09-AUG-06 HORSERADISH LEAVES ZR-NB-95 < 20.100 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 72

Exposure Pathway - Ingestion Food/Garden Location N-1 Gamma Spectrum Collection Sample, Nuclide Concentration Duplicate Date .Description (pCi/KgWet) Analysis 09-AUG-06 HORSERADISH LEAVES 1-131 39.000 09-AUG-06 HORSERADISH LEAVES CS-134 15.600 09-AUG-06 HORSERADISH LEAVES CS-137 20.600 13-SEP-06 HORSERADISH LEAVES BE-7 188.600 13-SEP-06 HORSERADISH LEAVES K-40 4301.000 +/- 459.100 13-SEP-06 HORSERADISH LEAVES MN-54 11.800 13-SEP-06 HORSERADISH LEAVES CO-58 < 13.800 13-SEP-06 HORSERADISH LEAVES FE-59 < 30.900 13-SEP-06 HORSERADISH LEAVES CO-60 < 8.300 13-SEP-06 HORSERADISH LEAVES ZN-65 < 33.900 13-SEP-06 HORSERADISH LEAVES ZR-NB-95 < 10.400 13-SEP-06 HORSERADISH LEAVES 1-131 < 24.800 13-SEP-06 HORSERADISH LEAVES CS-134 < 11.300 13-SEP-06 HORSERADISH LEAVES CS-137 < 15.600 11-OCT-06 HORSERADISH LEAVES BE-7 483.700 +/I- 289.900 11-OCT-06 HORSERADISH LEAVES K-40 5263.400 637.200 11-OCT-06 HORSERADISH LEAVES MN-54 < 17.600 11-OCT-06 HORSERADISH LEAVES CO-58 < 11.800 11-OCT-06 HORSERADISH LEAVES FE-59 < 20.300 11-OCT-06 HORSERADISH LEAVES CO-60 < 16.000 11-OCT-06 HORSERADISH LEAVES ZN-65 < 44.300 11-OCT-06 HORSERADISH LEAVES ZR-NB-95 < 16.500 11-OCT-06 HORSERADISH LEAVES 1-131 < 34.800 11-OCT-06 HORSERADISH LEAVES CS-134 < 19.500 11-OCT-06 HORSERADISH LEAVES CS-137 < 14 .800 08-NOV-06 HORSERADISH LEAVES BE-7 1261.100 +-/- 241.100 08-NOV-06 HORSERADISH LEAVES BE-7 1253.100 ++/- 217.800 Duplicate 08-NOV-06 HORSERADISH LEAVES K-40 4165.700 +*/- 469.500 08-NOV-06 HORSERADISH LEAVES K-40 4487.300 +-/- 451.400 Duplicate 08-NOV-06 HORSERADISH LEAVES MN-54 < 17.300 08-NOV-06 HORSERADISH LEAVES MN- 54 < 15.400 Duplicate 08-NOV-06 HORSERADISH LEAVES CO-58 < 12.600 08-NOV-06 HORSERADISH LEAVES CO-58 < 15.200 Duplicate 08-NOV-06 HORSERADISH LEAVES FE-59 < 24.400 08-NOV-06 HORSERADISH LEAVES FE-59 < 28.000 Duplicate 08-NOV-06 HORSERADISH LEAVES CO-60 < 13.400 08-NOV-06 HORSERADISH LEAVES CO-60 < 8.800 Duplicate 08-NOV-06 HORSERADISH LEAVES ZN-65 < 32.100 08-NOV-06 HORSERADISH LEAVES ZN-65 < 32.900 Duplicate 08-NOV-06 HORSERADISH LEAVES ZR-NB- 95 < 14.100 08-NOV-06 HORSERADISH LEAVES ZR-NB-95 < 15.100 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 73

Exposure Pathway - Ingestion Food/Garden Location N-1

-Gamma Spectrum

ýCollection Sample Nuclide *Concentration: 'Duplicate, Date Description S(pCiIKg Wet) Analysis 08-NOV-06 HORSERADISH LEAVES 1-131 < 24.300 08-NOV-06 HORSERADISH LEAVES 1-131 < 24.200 Duplicate 08-NOV-06 HORSERADISH LEAVES CS-134 < 12.400 08-NOV-06 HORSERADISH LEAVES CS-134 < 9.200 Duplicate 08-NOV-06 HORSERADISH LEAVES CS-137 < 17.100 08-NOV-06 HORSERADISH LEAVES CS-137 < 11.900 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 74

Exposure Pathway - Ingestion Food/Garden Location Q-6 Gamma Spectrum

'Collection Sample Nuclide Concentration Duplicate Dated,-: Description ..(pCi/Kg Wet) Analysis 14 -JUN- 06 HORSERADISH LEAVES BE-7 640.000 14 -JUN-06 HORSERADISH LEAVES K-40 6090.100 +/- 925.500 14 -JUN -06 HORSERADISH LEAVES MN-54 31.400 14 -JUN- 06 HORSERADISH LEAVES CO-58 41.300 14 -JUN- 06 HORSERADISH LEAVES FE-59 90 .100 14 -JUN- 06 HORSERADISH LEAVES CO-60 35.200 14-JUN-06 HORSERADISH LEAVES ZN-65 45.800 14 -JUN- 06 HORSERADISH LEAVES ZR-NB-95 42.500 14 -JUN- 06 HORSERADISH LEAVES 1-131 44 .800 14 - JUN- 06 HORSERADISH LEAVES CS-134 37.900 14 -JUN- 06 HORSERADISH LEAVES CS-137 44.400 12 -JUL- 06 HORSERADISH LEAVES BE-7 247.900+- 140.700 12-JUL-06 HORSERADISH LEAVES K-40 3564 .70 0 +/ - 333.800 12-JUL-06 HORSERADISH LEAVES MN-54 6.200 12 -JUL- 06 HORSERADISH LEAVES CO-58 8.100 12-JUL-06 HORSERADISH LEAVES FE-59 14.200 12-JUL-06 HORSERADISH LEAVES CO-60 8.600 12-JUL-06 HORSERADISH LEAVES ZN-65 22.200 12-JUL-06 HORSERADISH LEAVES ZR-NB-95 12.700 12-JUL-06 HORSERADISH LEAVES 1-131 27.400 12-JUL-06 HORSERADISH LEAVES CS-134 10.600 12-JUL-06 HORSERADISH LEAVES CS-137 13 .900 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 75

Exposure Pathway - Ingestion Feed and Forage Location NR-D1 Gamma Spectrum Collection 'Sample Nuclide Concentration Duplicate Date Description (pCiIKg Wet) Analysis 08-NOV-06 IRRIGATED SOYBEANS BE-7 < 137.300 08-NOV-06 IRRIGATED SOYBEANS K-40 18112.000 -+/- 756.000 08-NOV-06 IRRIGATED SOYBEANS MN-54 < 18.500 08-NOV-06 IRRIGATED SOYBEANS CO-58

• 15.700 08-NOV-06 IRRIGATED SOYBEANS FE-59 < 56.500 08-NOV-06 IRRIGATED SOYBEANS CO-60 < 22.100 08-NOV-06 IRRIGATED SOYBEANS ZN-65 < 54.800 08-NOV-06 IRRIGATED SOYBEANS ZR-NB-95 < 19.100 08-NOV-06 IRRIGATED SOYBEANS 1-131 < 26.800 08-NOV-06 IRRIGATED SOYBEANS CS-134 < 13.800 08-NOV-06 IRRIGATED SOYBEANS CS-137 < 14.400 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 76

Exposure Pathway - Ingestion Feed and Forage Location NR-D2 Gamma Spectrum° Collection Sample Nuclide SConcentration Duplicate

.. Date 'Description (PCi/KgWet) Analysis 22-SEP-06 IRRIGATED CORN BE-7 < 78.600 22-SEP-06 IRRIGATED CORN K-40 2372.700 +/- 250.400 22-SEP-06 IRRIGATED CORN MN-54 6.400 22-SEP-06 IRRIGATED CORN CO-58 5.500 22-SEP-06 IRRIGATED CORN FE-59 13.000 22-SEP-06 IRRIGATED CORN CO-60 6.400 22-SEP-06 IRRIGATED CORN ZN-65 22.000 22-SEP-06 IRRIGATED CORN ZR-NB-95 5.600 22-SEP-06 IRRIGATED CORN 1-131 14.300 22-SEP-06 IRRIGATED CORN CS-134 7.400 22-SEP-06 IRRIGATED CORN CS-137 9.900 18-OCT-06 IRRIGATED SOYBEANS BE-7 108.100 18-OCT-06 IRRIGATED SOYBEANS BE-7 81.200 Duplicate 18-OCT-06 IRRIGATED SOYBEANS K-40 20398.000+- 841.000 18-OCT-06 IRRIGATED SOYBEANS K-40 19S37.000+- 987.400 Duplicate 18-OCT-06 IRRIGATED SOYBEANS MN-54 16.900 18-OCT-06 IRRIGATED SOYBEANS MN-54 18.400 Duplicate 18-OCT-06 IRRIGATED SOYBEANS CO-58 10.300 18-OCT-06 IRRIGATED SOYBEANS CO-58 26.900 Duplicate 18-OCT- 06 IRRIGATED SOYBEANS FE-59 32.500 18-OCT-06 IRRIGATED SOYBEANS FE-59 63.400 Duplicate 18-OCT- 06 IRRIGATED SOYBEANS CO-60 17.900 18-OCT-06 IRRIGATED SOYBEANS CO-60 17.100 Duplicate 18-OCT-06 IRRIGATED SOYBEANS ZN-65 58.000 18-OCT-06 IRRIGATED SOYBEANS ZN-65 76.900 Duplicate 18-OCT- 06 IRRIGATED SOYBEANS ZR-NB- 95 24 .000 18-OCT-06 IRRIGATED SOYBEANS ZR-NB-95 27.300 Duplicate 18-OCT-06 IRRIGATED SOYBEANS 1-131 23.400 18-OCT-06 IRRIGATED SOYBEANS 1-131 25.200 Duplicate 18-OCT-06 IRRIGATED SOYBEANS CS-134 10.500 18 -OCT- 06 IRRIGATED SOYBEANS CS-134 24 .700 Duplicate 18-OCT-06 IRRIGATED SOYBEANS CS-137 16.000 18-OCT-06 IRRIGATED SOYBEANS CS-137 28.300 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 77

Exposure Pathway - Ingestion Feed and Forage Location NR-U1 Gamma Spectrum Collection Sample * 'Nuclide Concentrationvr Duplicate Date.- Description *(pCi/Kg Wet) .Analysis 08-NOV-06 NON-IRRIGATED CORN BE-7 121.400 08-NOV-06 NON-IRRIGATED CORN K-40 2524.100 +/- 360.000 08-NOV-06 NON-IRRIGATED CORN MN-54 9.000 08-NOV-06 NON-IRRIGATED CORN CO-58 5.000 08-NOV-06 NON-IRRIGATED CORN FE-59 16.300 08-NOV-06 NON-IRRIGATED CORN CO-60 7.100 08-NOV-06 NON-IRRIGATED CORN ZN-65 18.800 08-NOV-06 NON-IRRIGATED CORN ZR-NB-95 8.300 08-NOV-06 NON-IRRIGATED CORN 1-131 9.900 08-NOV-06 NON-IRRIGATED CORN CS-134 8.600 08-NOV-06 NON-IRRIGATED CORN CS-137 10.000 08-NOV-06 NON-IRRIGATED SOYBEANS BE-7 107.100 08-NOV-06 NON-IRRIGATED SOYBEANS K-40 14696.000+- 609.300 08-NOV-06 NON-IRRIGATED SOYBEANS MN-54 11.400 08-NOV-06 NON-IRRIGATED SOYBEANS CO-58 7.800 08-NOV-06 NON-IRRIGATED SOYBEANS FE-59 25.800 08-NOV-06 NON-IRRIGATED SOYBEANS CO-60 8.900 08-NOV-06 NON-IRRIGATED SOYBEANS ZN-65 25.100 08-NOV-06 NON-IRRIGATED SOYBEANS ZR-NB-95 9.700 08-NOV-06 NON-IRRIGATED SOYBEANS 1-131 18.300 08-NOV-06 NON-IRRIGATED SOYBEANS CS-134 13 .000 08-NOV-06 NON-IRRIGATED SOYBEANS CS-137 17.200 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 78

Exposure Pathway - Aquatic Bottom Sediment Location DC Gamma Spectrum Collection Nuclide Concentration Duplicate

...,'Date (pCi/Kg. Dry) Analysis 19-MAY-06 K-40 13324.000 +/- 827.600 19-MAY-06 MN-54

• 34.600 19-MAY-06 CO-58

• 22.000 19-MAY-06 FE-59

• 65.900 19-MAY-06 CO-60 107.300 +/- 32.000 19-MAY-06 ZN-65

• 58.100 19- MAY - 06 CS-134

• 28.400 19-MAY-06 CS-137 189.300 +/- 40.900 25-OCT-06 K-40 14040.000 +/- 1221.000 25-OCT-06 MN-54 < 49.700 25-OCT-06 CO-58 49.100 25-OCT-06 FE-59 131.600 25-OCT-06 CO-60 139.100 +/- 50.600 25-OCT-06 ZN-65 109.100 25-OCT-06 CS-134 60.100 25-OCT-06 CS-137 224.100 +/- 64.400 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 79

Exposure Pathway - Aquatic Bottom Sediment Location EEA Gamma Spectrum Collection Nuclide, Concentration .Duplicate

.. Date. (pCiiKg Dry) Analysis 26 -MAY- 06 K-40 12874.000 -+/- 715.700 26-MAY- 06 MN-54

• 21.700 26-MAY- 06 CO-58

• 20.800 26-MAY- 06 FE-59

• 44.200 26-MAY- 06 CO-60

• 16.800 26-MAY- 06 ZN-65

• 41.700 26 -MAY- 06 CS-134

• 17.100 26-MAY-06 CS-137 96-900 ++/- 33.600 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 80

Exposure Pathway - Aquatic Bottom Sediment Location JRR Gamma Spectrum

'Concentration Collection Nuclide Duplicate' I Date (pCiIKg Dry)' Analysis 19-MAY-06 K-40 21825.000 +/- 1128.000 19-MAY-06 MN-54 48.700 19-MAY-06 CO-58 35.700 19-MAY-06 FE-59 46.500 19-MAY-06 CO-60 33.400 19-MAY-06 ZN-65 97.600 19-MAY-06 CS- 134 66.700 19-MAY - 06 CS-137 164.800 +/- 62.900 27-NOV-06 K-40 17323.000 +/- 846.300 27-NOV-06 K-40 17213.000 +/- 1126.000 Duplicate 27-NOV- 06 MN-54 28.500 27-NOV-06 MN- 54 42.000 Duplicate 27-NOV-06 CO-58 22.900 27-NOV- 06 CO-58 32.200 Duplicate 27-NOV-06 FE- 59 50.400 27-NOV- 06 FE-59 58.600 Duplicate 27-NOV-06 CO-60 20.700 27-NOV-06 CO-60 33 .000 Duplicate 27-NOV- 06 ZN-65 63.800 27-NOV-06 ZN-65 107.500 Duplicate 27-NOV-06 CS-134 18.400 27-NOV-06 CS -134 61.900 Duplicate 27-NOV-06 CS-137 140.500 - 45.600 27-NOV-06 CS-137 135.800 i- 44.100 Duplicate 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 81

Exposure Pathway - Aquatic Bottom Sediment Location MUDS Gamma Spectrum Collection Nuclide'. Concentration Duplicate Date (pCiIKg Dry) Analysis 26-JUN -06 K-40 8695.100 +/- - 816.000 34 .700 26 -JUN- 06 MN-54 26-JUN-06 CO-58

• 19.700 26-JUN-06 FE-59

• 92.200 26-JUN-06 CO-60

• 39.300 26 -JUN - 06 ZN-65

• 86.500 26-JUN-06 CS-134

• 53.700 26-JUN-06 CS-137

• 41.100 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 82

Exposure Pathway - Aquatic Vegetation Location EEA Gamma Spectrum Collection Sample Nuclide .Concentration. Duplicate

,Date,

Description:

(pCi/KgWet) Sample" 26-MAY- 06 ALGAE & PONDWEED BE-7 653.600+/ - 70.500 26-MAY-06 ALGAE & PONDWEED K-40 1622.300 +/ - 113.800 26 -MAY - 06 ALGAE & PONDWEED MN- 54

• 4.800 26-MAY-06 ALGAE & PONDWEED CO-58 < 3.400 26-MAY-06 ALGAE & PONDWEED FE-S9 < 11.500 26-MAY-06 ALGAE & PONDWEED CO-60 < 4.600 26 -MAY - 06 ALGAE & PONDWEED ZN-65 < 9.700 26-MAY-06 ALGAE & PONDWEED ZR-NB-95

• 10.200 26-MAY- 06 ALGAE & PONDWEED 1-131 < 55.700 26-MAY-06 ALGAE & PONDWEED CS-134 < 5.500 26-MAY-06 ALGAE & PONDWEED CS-137 < 6.800 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 83

Exposure Pathway - Aquatic Vegetation Location MUDS Gamma Spectrum Collection Sample Nuclide , Concentration Duplicate, (pCi/Kg Wet) Sample .

Date Description 26 -JUN- 06 PONDWEED BE-7 224.800+/- 120.800 26-JUN- 06 PONDWEED BE-7 < 149.600 Duplicate 26-JUN-06 PONDWEED K-40 1717.100+/- 244.300 26-JUN-06 PONDWEED K-40 1893.100 +/- 223.300 Duplicate 26-JUN- 06 PONDWEED MN-54 < 10.000 26-JUN- 06 PONDWEED MN-54 < 10.600 Duplicate 26-JUN-06 PONDWEED CO-58 < 11.200 26-JUN-06 PONDWEED CO-58 < 5.800 Duplicate 26-JUN-06 PONDWEED FE-59 < 20.700 26-JUN-06 PONDWEED FE-59

• 19.800 Duplicate 26-JUN-06 PONDWEED CO-60 < 8.700 26-JUN-06 PONDWEED CO-60 < 10.200 Duplicate 26 -JUN- 06 PONDWEED ZN-65 < 12.800 26-JUN-06 PONDWEED ZN-65

• 10.200 Duplicate 26-JUN-06 PONDWEED ZR-NB-95 < 9.900 26-JUN-06 PONDWEED ZR-NB-95

• 14.100 Duplicate 26 -JUN- 06 PONDWEED 1-131 < 30.700 26-JUN-06 PONDWEED 1-131 < 32.900 Duplicate 26-JUN-06 PONDWEED CS-134 < 9.300 26 -JUN- 06 PONDWEED CS-134

• 10.500 Duplicate 26-JUN-06 PONDWEED CS-137 < 10.400 26-JUN-06 PONDWEED CS-137 < 7.100 Duplicate 14-NOV-06 WATER NAIAD BE-7 252.800 +/- 124.800 14-NOV-06 WATER NAIAD K-40 3363.200+/- 335.700 14-NOV-06 WATER NAIAD MN-54

• 12.500 14-NOV-06 WATER NAIAD CO-58 < 14.500 14-NOV-06 WATER NAIAD FE-59 < 22.900 14-NOV-06 WATER NAIAD CO-60

• 12.100 14-NOV-06 WATER NAIAD ZN-65 < 24.200 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 84

Exposure Pathway - Aquatic Vegetation Gamma Spectrum.

,Collection Sample Nuclide Concentration Duplicate Date Description (pCilKg Wet) Sample.-

14 -NOV-06 WATER NAIAD ZR-NB-95 < 13.500 14-NOV-06 WATER NAIAD 1-131

• 25.100 14-NOV-06 WATER NAIAD CS-134 < 11.400 14-NOV-06 WATER NAIAD CS-137 < 14.400 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 85

Exposure Pathway - Terrestrial Vegetation Location EEA Gamma Spectrum Collection Sample Nuclide tConcentration". Duplicate Date Description  :,:.(pCilKg Wet) Analysis 26- MAY -06 PASTURAGE BE-7 357.100+/- 202.500 26-MAYy- 06 PASTURAGE K-40 7484.200+/- 638.200 26-MAY-06 PASTURAGE MN-54 17.800 26-MAY-06 PASTURAGE CO-58 < 20.600 26-MAY-06 PASTURAGE FE-59 < 41.100 26-MAY-06 PASTURAGE CO-60 < 19.300 26 -MAY-06 PASTURAGE ZN-65 < 42.400 26-MAY-06 PASTURAGE ZR-NB-95 < 19.200 26-MAY-06 PASTURAGE 1-131 < 34.100 26 -MAY- 06 PASTURAGE CS-134 < 18.200 26-MAY-06 PASTURAGE CS-137 < 20.800 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 86

Exposure Pathway - Terrestrial Vegetation Location MUDS Gamma Spectrum Sample 'Nuclide Concentration Duplicate Collection * (pCi/Kg Wet)

Date, Description Analysis 26-JUN-06 PASTURAGE BE-7 1064.900+/- 216.900 26-JUN-06 PASTURAGE K-40 6269.300+/- 522.200 PASTURAGE MN-54 < 10.100 26 -JUN-06 PASTURAGE CO-58 < 17.600 26-JUN- 06 PASTURAGE FE-59 < 40.600 26-JUN-06 PASTURAGE CO-60 < 12.000 26-JUN-06 ZN-65 < 21.700 26 -JUN -06 PASTURAGE PASTURAGE ZR-NB-95 < 11.800 26-JUN-06 PASTURAGE 1-131 < 38.000 26-JUN-06 PASTURAGE CS-134 < 10.800 26-JUN-06 PASTURAGE CS-137 < 17.500 26-JUN-06 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 87

Exposure Pathway - Terrestrial Soil Location EEA Gamma Spectrum Collection Nuclide Concentration Duplicate

Date (PCiIKg Dry), Analysis 26-MAY-06 K-40 13180.000+/- 690.400 26 -MAY- 06 MN-54 22.900 26-MAY-06 CO-58 < 21.400 26-MAY-06 FE-59 < 43.300 26-MAY-06 CO-60 < 7.900 26-MAY- 06 ZN-65 < 50.200 26-MAY-06 CS-134 < 19.200 26-MAY-06 CS-137 < 21.800 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 88

Exposure Pathway - Terrestrial Soil Location MUDS Gamma Spectrum Collection Nuclide Concentrationi. Duplicate

.Date (pCi/KgPDry) , Analysis 26-JUN-06 K-40 10501.000+/- 939.800 26-JUN-06 MN-54 36.200 26 -JUN- 06 CO-58 23.000 26-JUN- 06 FE-59 77.500 26-JUN-06 CO-60 38.200 26- JUN- 06 ZN-65 86.200 26- JUN -06 CS-134 48.000 26-JUN-06 CS-137 46.300 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 89

Exposure Pathway - Ingestion Deer Location A.8 GammaSpectrum

Sample Nuclide Concentration Dutplicate Collection Description .(pCi/Kg Wet) Analysis Date DEER K-40 2860.500+/- 401.700 27-OCT-06 DEER MN-54 < 18.700 27-OCT- 06 DEER CO-58 < 18.900 27-OCT-06 DEER FE-59 < 52.700 27-OCT- 06 DEER CO-60 < 10.700 27-OCT-06 DEER ZN-65 < 32.000 27-OCT-06 DEER CS-134 < 13.900 27-OCT-06 DEER CS-137 < 13.400 27-OCT-06 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 90

WOLF CREEK GENERATING STATION 2006 LAND USE CENSUS REPORT A,

Prepared by:

09-20-06 Teresa L. Rice Date Peer Review:

09-21-06 Ralph L. Logsdon Date Approved by: I 9/21/06 Fro, Robert A. Hammond Date Approved by:

09/21/06 Kevin J. Moles Date 2006 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 2006 in accordance with AP 07B-004, [Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program)].

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

Changes may be necessary for the Radiological Environmental Monitoring Program (REMP) broadleaf vegetation sample locations for 2007. The two broadleaf vegetation locations with the highest calculated annual average D/Q rankings have changed to R2.08-NALN1650 and Q2.35-MILA1619. AP 07B-004 specifies that an "alternate location may be used to provide continued monitoring". The third-ranked garden is location N2.38-RRDR9. The residents will be contacted prior to the 2007 growing season and based upon their cooperation; the REMP will be revised accordingly. It should be noted that locations Q2.35-MILA1619 and N2.38-RRDR9 were established sampling locations for the 2006-growing season.

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 ten 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.

2006 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 "G" was the only sector that experienced a change in the nearest residence. The residence located at G1.56-QURD1384 is currently vacant, thus, the nearest residence in sector "G" is now G3.03-13RD1820.

Three 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.

2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 3

TABLE 1 2006 Land Use Census Data Location of Nearest:

Sector Residence Milkinq Animals Broadleaf Garden A A2.60-17TEl 520 None None B B3.53-QURD1755 None None C C1.92-16RD1655 None C1.92-16RD1655 D D2.03-QULA1571 None D3.00-16RD1829 E E1.77-QULA1485 None E4.40-TRRD1551 F F1.76-14RD1730 None F2.44-RERD1391 G G3.03-13RD1820 None G3.66-12RD1814 H H3.09-12RD1711 None H3.30-QURD1 175 J J3.70-11 RD1540 None J3.90-1 1RD 1531 K K2.70-12LA1439 None K4.10-NARD1 120 L L2.10-NARD 1339 None L2.39-NARD1309 M M2.47-14RD1322 None M3.10-133LA1 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-NALN1650 None R2.08-NALN1650 Identifiers are based upon the following protocol:

EXAMPLE: A1.4-16RD1525 "A" = Sector A "1.4" = 1.4 miles from the reactor "16RD1525" = address 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D -4

TABLE 2 SECTOR 2005 NEAREST 2006 NEAREST RESIDENCE RESIDENCE A A2.60-17TE1520 A2.60-17TEl 520 B B3.53-QURD1755 B3.53-QURD1755 C C1.92-16RD1655 C1.92-16RD1655 D D2.03-QULA1571 D2.03-QULA1571 E E1.77-QULA1485 El.77-QULA1485 F F1.76-14RD1730 F1.76-14RD1730 G G1.56-QURD1384 G3.03-13RD1820 H H3.09-12RD1711 H3.09-12RD1711 J J3.70-11RD1540 J3.70-1 1RD1540 K K2.70-12LA1439 K2.70-12LA1439 L L2.10-NARD1339 L2.1 0-NARD 1339 M M2.47-14RD1322 M2.47-14RD1322 N N1.71-NARD1441 N1.71-NARD1441 P P2.76-HW751534 P2.76-HW751534 Q Q2.35-MILA1619 Q2.35-MILA1619 R R2.08-NALN1650 R2.08-NALN1650 NOTE: Entries underlined indicate changes from the 2005 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.

2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 5

TABLE 3 2006 Land Use Census Milk and Garden Data SECTOR 2005 2006 2005 CLOSEST 2006 CLOSEST MILKING MILKING GARDEN GARDEN ANIMALS ANIMALS PRODUCING PRODUCING BROADLEAF BROADLEAF VEGETATION VEGETATION None A None None None None None B None B3.53-QURD1755 None C None C1.92-16RD1655 C1.92-16RD1655 None D None D3.00-16RD1829 D3.00-16RD1829 None E None E4.40-TRRD1551 E4.40-TRRD1551 None F None F2.44-RERD1391 F2.44-RERD1391 None G None G1.56-QURD1384 G3.66-12RD1814 None H None H3.30-QURD1 175 H3.30-QURD1 175 None J None J3.90-11RD1531 J3.90-1 1RD1531 None K None K4.10-NARD 1120 K4.10-NARD1 120 None L None L2.39-NARD1309 L2.39-NARD1309 None M None M3.10-13LA1 290 M3.10-13LA1290 None N None N2.38-RRDR9 N2.38-RRDR9 None P None P2.76-HW751534 P2.76-HW751534 None Q None Q2.35-MILA1619 Q2.35-MILA1619 None R None None R2.08-NALN1650 NOTE: Underlined entries indicate changes from the 2005 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.

2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 6

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

• 20%

SECTOR (MI) (METERS) DIST D/Q DIST D/Q CALC RANKING A 0 0 B 0 0 C 1.92 3091 3000 7.26E-10 4000 4.36E-10 7.00E-10 4 8.40E-10 D 3.00 4830 4000 3.20E-10 5000 2.18E-10 2.35E-10 13 2.82E-10 E 4.40 7084 7000 1.14E-10 8000 9.23E-11 1.12E-10 14 1.34E-10 F 2.44 3928 3000 6.41E-10 4000 3.84E-10 4.03E-10 8 4.84E-10 G 3.66 5893 5000 4.97E-10 6000 3.65E-10 3.79E-10 10 4.55E-10 H 3.30 5313 5000 5.84E-10 6000 4.29E-10 5.35E-10 7 6.42E-10 J 3.90 6279 6000 3.72E-10 7000 2.76E-10 3.45E-10 11 4.14E-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 5 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 3 8.72E-10 P 2.76 4444 4000 7.30E-10 5000 4.97E-10 6.27E-10 6 7.52E-10 Q 2.35 3784 3000 1.75E-09 4000 1.05E-09 1.20E-09 2 1.44E-09 R 2.08 3349 3000 2.54E-09 4000 1.52E-09 2.18E-09 1 2.62E-09 Originated by: jl",Lwa ý/ ýý- Date: 09-20-06 Verified by: Date: 09-21-06 2006 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page D - 7