ML25118A071

2024 Annual Radiological Environmental Operating Report

ML25118A071
Person / Time
Site:	Wolf Creek, Peach Bottom
Issue date:	04/28/2025
From:	Joseph Turner Wolf Creek
To:	Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation, Document Control Desk
References
000951
Download: ML25118A071 (1)

Text

P.O. Box 411 l Burlington, KS 66839 l 620-364-8831 Joshua K. Turner Acting Director Regulatory Affairs April 28, 2025 000951 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001

Subject:

Docket No. 50-482 and 72-79: 2024 Annual Radiological Environmental Operating Report Commissioners and Staff:

The purpose of this letter is to submit the enclosed Annual Radiological Environmental Operating Report, which is being submitted pursuant to Wolf Creek Generating Station (WCGS) Technical Specification 5.6.2. This report covers radiological environmental monitoring for WCGS for the period of January 1, 2024, through December 31, 2024.

This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-8831 x8261, or Dustin Hamman at (620) 364-4204.

Sincerely, Joshua K. Turner

Enclosure:

Wolf Creek Generating Station 2024 Annual Radiological Environmental Operating Report cc:

A. N. Agrawal (NRC), w/e S. S. Lee (NRC), w/e J. D. Monninger (NRC), w/e Senior Resident Inspector (NRC), w/e WC Licensing Correspondence, w/e - RA 25-000951

Enclosure to 000951 2024 Annual Radiological Environmental Operating Report (156 pages including this page)

WOLF CREEK NUCLEAR OPERATING CORPORATION WOLF CREEK GENERATING STATION 2024 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 2024

i TABLE OF CONTENTS List of Tables/Figures/Charts ii Executive Summary 1

Introduction 1

I. Program Description 1

II. Discussion of Results 4

III. Program Revisions/Changes 9

IV. Program Deviations 10 V. Interlaboratory Comparison Program 10 VI. Comparison to the Radioactive Effluent Release Program 10 VII. Condition Reports 11 Tables 12 Figures 21 Charts 26 Appendix A - Interlaboratory Comparison Program Results Appendix B - Summary Tables Appendix C - Individual Sample Results Air Particulate Filters and Radioiodine Canisters C-1 Quarterly Air Particulate - Gamma C-13 Surface Water C-19 Ground Water C-28 Drinking Water C-42 Quarterly Drinking Water - Tritium C-51 Shoreline Sediment C-53 Fish C-57 Food/Garden C-64 Food/Crops C-74 Aquatic Vegetation C-77 Bottom Sediment C-80 Terrestrial Vegetation C-84 Soil C-86 Meat C-87 Appendix D - Land Use Census Report

ii LIST OF TABLES 1 Radiological Environmental Monitoring Program Description 12 2 Sample Location Identifiers, Distances (Miles) and Directions (Sectors) 17 3 OSL Dosimeter Results 20 LIST OF FIGURES 1 Airborne Pathway Sampling Locations 21 2 Direct Radiation Pathway Sampling Locations 22 3 Waterborne Pathway Sampling Locations 23 4 Ingestion Pathway Sampling Locations 24 5 Distant Sampling Locations 25 LIST OF CHARTS 1 Airborne Gross Beta Weekly Results 26 2 Historical Airborne Smoothed Indicator and Control Gross Beta 27 3 OSL Dosimeters - Indicator and Control Locations 28 4 Historical TLD Nearsite Locations and Control Locations 29 5 Coffey County Lake Surface Water Tritium Data 30 6 Drinking Water Gross Beta (5 years) 31 7 Detected Cs-137 Activity in Bottom Sediment 32

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 1 of 32 EXECUTIVE

SUMMARY

Plant-related activation, corrosion, or fission products were not detected during 2024 in air particulate

filters, radioiodine canisters, ground

water, drinking

water, broadleaf vegetation, shoreline sediment, crops, bottom sediment, aquatic vegetation, terrestrial vegetation or soil samples. Activation, corrosion or fission products attributable to plant operation were detected during 2024 in surface water, fish, turkey, and deer samples.

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

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

INTRODUCTION The 2024 Annual Radiological Environmental Operating Report for Wolf Creek Generating Station (WCGS) covers the period from January 1 through December 31, 2024.

WCGS is in Coffey County, Kansas, approximately five miles northeast of Burlington, Kansas.

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

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

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

processed the environmental optically stimulated luminescence (OSL) dosimeters. Table 1 identifies the exposure pathway/

sample type, number of samples and sample locations, sample collection frequency, and the type and frequency of analysis. Table 2 lists the sample location identifiers, distances and directions from the plant. Samples in addition to those required by AP 07B-004 were also obtained and analyzed.

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

A. Airborne Pathway Low volume air sampling pumps with digital flow meters continuously sampled air through 47 mm glass fiber particulate filters and radioiodine canisters, respectively. The air particulate filters and radioiodine canisters were collected weekly. Gross beta analysis was performed weekly on the air particulate filters. Gamma isotopic analysis was also performed quarterly on

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 2 of 32 the air particulate filters. Radioiodine canisters were analyzed weekly for I-131.

Air samples were collected from six locations. The indicator locations sampled included 2, 18, 32, 37 and 49. A control location near the intersection of 20th Road and Yearling Road (location

53) was also sampled. Indicator sample locations are shown in Figure 1 and the control sample location is shown in Figure 5.

B. Direct Radiation Pathway Optically stimulated luminescence (OSL) dosimeters were used continuously at 44 locations during the sample year to measure direct radiation. The OSLs were typically positioned roughly 3 to 4 feet above the ground in plastic thermostat boxes. Three OSLs were placed at each designated location. The OSLs were changed out quarterly and analyzed quarterly for gamma dose. Transit dose was measured and subtracted from the ambient dose. Indicator OSL sample locations are illustrated in Figure 2 and control sample locations are shown in Figure 5.

Control sample locations were 39 (Beto Junction) and 53 (near the intersection of 20th Road and Yearling Road).

C. Waterborne Pathway Gamma isotopic analysis was performed on the water samples. In addition to gamma isotopic analysis, analysis for I-131 was performed monthly on drinking water and quarterly on ground water samples. Gross beta analysis was performed monthly on drinking water samples. Tritium analysis was performed monthly for surface water and quarterly for drinking water. Tritium analysis was also performed quarterly on ground water samples. Four surface water samples from the Coffey County Lake Spillway (SP) location and four surface water samples from the John Redmond Reservoir (JRR) location were also analyzed for Fe-55. The waterborne pathway sample locations are shown in Figures 3 and 5.

Monthly grab samples of surface water were collected from the John Redmond Reservoir (JRR) control location and from the Coffey County Lake Spillway (SP) indicator location.

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

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

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

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 3 of 32 D. Ingestion Pathway Milk was not collected during the sample year. The Land Use Census did not identify any locations producing milk for human consumption within five miles of the plant.

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

Fish were also analyzed for tritium.

Broadleaf vegetation samples were collected monthly when available during the growing season. Indicator (A-3, B-1, H-2 and Q-6) location gardens (Figure 4) and a control (D-2) location garden (Figure 5) were sampled. Gamma isotopic analyses were performed on these samples.

Irrigated crop samples were obtained from indicator location (NR-D1) and non-irrigated samples from indicator location (NR-D2) downstream of the confluence of Wolf Creek and the Neosho River. Irrigated crops were also sampled 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 AP 07B-004)

Bottom sediment samples were collected semiannually from indicator sample locations at the Discharge Cove (DC), and the control sample location at John Redmond Reservoir (JRR).

Three other bottom sediment samples were collected from Makeup Discharge Structure (MUDS), Environmental Education Area (EEA), and Stringtown Cemetery (SC).

Gamma isotopic analyses were performed on the bottom sediment samples. Two samples collected from indicator location (DC) were also analyzed for Fe-55. No samples were analyzed for Ni-63, Sr-89 and Sr-90 activity (Hard to Detect Metals). Starting in 2025 Hard to Detects will start being analyzed. One shoreline sediment sample was collected from indicator sample location at Stringtown Cemetery (SC) as part of a cooperative sampling effort with the Kansas Department of Health and Environment (KDHE). The sample locations are identified on Figure 3.

Aquatic vegetation was collected from indicator locations at the MUDS, EEA and SC.

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

Terrestrial vegetation (grass) was sampled from the Environmental Education Area (EEA) and the Makeup Discharge Structure (MUDS) indicator sample locations. Gamma isotopic analysis was performed on the grass samples. These samples were collected as part of a cooperative sampling effort with the KDHE. The sample locations are identified on Figure 4.

Soil was sampled from the Makeup Discharge Structure (MUDS). Gamma isotopic analysis was performed on the soil sample. This samples was collected as part of a cooperative sampling effort with the KDHE. The sample locations are identified on Figure 4.

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 4 of 32 Turkey was sampled from indicator sample location J3.5. Gamma isotopic analysis and tritium analysis was performed on the turkey sample. This sample was collected as part of a cooperative sampling effort with the KDHE. The sample location is identified on Figure 4.

Deer was sampled from indicator sample location Q2.4. Gamma isotopic analysis and tritium analysis was performed on the deer sample. This sample was collected as part of a cooperative sampling effort with the KDHE. The sample location is identified on Figure 4.

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

A. Airborne Pathway Chart 1 graphically illustrates weekly gross beta results for the sample year. Chart 2 represents the gross beta historical airborne smoothed averages of indicator sample locations and control sample locations. Charts 1 and 2 demonstrate how closely the indicator and control sample locations tracked together. Chart 2 reveals a seasonal cyclic trend; the gross beta values peak in the winter months (December or January) and decrease to a low point in the spring months (May or June). This trend is expected and is attributed to seasonal meteorological changes, i.e., changes in prevailing winds and precipitation.

The gross beta results of 2024 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/m3.

The 2024 weekly gross beta analyses range for indicator locations was 0.010 to 0.058 pCi/m3.

The 2024 weekly gross beta analyses range was within the 1983 and 1984 pre-operational range. Additionally, the annual mean for indicator locations for 2024 (0.026 pCi/m3) was lower than the annual mean for 1983 (0.032 pCi/m3).

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

The annual mean for indicator locations for 2024 (0.026 pCi/m3) was just above our control location (0.025 pCi/m3). The indicators location with the highest gross beta annual mean was 32,37, and 49 the average between these locations is (0.026 pCi/m3). Again, just above the mean at the controlled location (0.025 pCi/m3).

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/m3 for indicator locations and the annual mean for indicator locations was 0.069 pCi/m3. In 2024, the range for Be-7 detected activity was 0.030 to 0.112 pCi/m3 for indicator locations and the annual mean for indicator locations was 0.072 pCi/m3. The control location annual mean for Be-7 detected activity (0.078 pCi/m3) was higher than the annual mean of the indicator locations (0.072 pCi/m3). The indicator location with the highest annual mean of detected Be-7 activity was location 37 (0.075 pCi/ m3).

I-131 activity was not detected in the weekly analysis of radioiodine canisters at any location.

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 5 of 32 The AP 07B-004 required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2024 in air particulate filters and radioiodine canisters. No unusual trends were noted.

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

The annual mean of indicator sample locations in 2024 was 18.6 mR per standardized 90-day quarter. The annual mean of the control sample locations in 2024 was 18.5 mR per standardized 90-day quarter.

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

The indicator sample location with the highest annual mean was location 13 (21 mR per standardized 90-day quarter) which is slightly higher than the annual mean of the control sample locations (18.5 mR per standardized 90-day quarter). This is to be assumed to be attributed from the plant.

Based upon Condition Report 00027489, improvements were made in measuring and subtracting transit dose in 2010. As expected, the OSL results increased during 2010 based on how transit dosimeters are handled. Chart 3 visibly displays the increase of the OSL results since 2010. Chart 3 also displays how closely the indicator and control location OSL dosimeter results are for 2018. Condition Report 00128355 was written to reduce data elimination based on standard deviation starting in Quarter 3 of 2018. In 2021 no change in trend was noted due to this change.

Chart 4 displays the TLD nearsite sample locations (1, 2, 7-9, 11-14, 18, 26, 27, 29, 30, 37, and

38) and the control sample locations (locations 39 and 48) for the preoperational years through 2007.

C. Waterborne Pathway (1) Surface Water Tritium, attributable to WCGS operation, was detected in surface water samples collected from the Coffey County Lake spillway (SP) indicator sample location. The annual mean for detected tritium activity at the SP location was 12,685 pCi/L and the range was 10,663 to 15,030 pCi/L.

The detected tritium activity was below the 30,000 pCi/L AP 07B-004 reporting level. Chart 5 illustrates the yearly average of surface water tritium data for the SP location. Chart 5 indicates the average tritium concentration of the SP location has increased slightly from last year. No Tritium activity was detected in the controlled sample, John Redmond Reservoir (JRR).

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

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 6 of 32 The AP 07B-004 required lower limits of detection were met. Radionuclides were not detected by the gamma isotopic analyses or by Fe-55 analyses.

Tritium was the only activity detected during 2024 in surface water samples and no unusual trends were noted.

(2) Ground Water The AP 07B-004 required lower limits of detection were met for I-131, tritium and gamma isotopic analyses. Radioactivity was not detected in any ground water samples. No unusual trends were noted. Plant-related activation, corrosion or fission products were not detected during 2024 in ground water samples.

(3) Drinking Water Gross beta activity was detected in drinking water samples collected from the indicator sample location and in samples collected from the control sample location. The annual mean of the indicator sample location gross beta activity (2.548 pCi/L) was slightly higher when compared to the annual mean of the control sample location gross beta activity (2.255 pCi/L). The 2024 annual mean of gross beta activity for both the indicator and control sample locations were lower than those of the pre-operational monitoring year of 1984. In 1984, the annual mean of the indicator sample location gross beta activity was 7.5 pCi/L and the annual mean of the control sample location gross beta activity was 6.4 pCi/L.

Chart 6 illustrates the drinking water gross beta results for the last five years and how closely the gross beta results compared for the indicator and control sample locations.

No tritium was detected in the indicator sample location during 2024. No release limits were exceeded, and results were well below required detection limits. No other radionuclides were detected by the gamma isotopic analyses of the indicator or control location samples.

The AP 07B-004 required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2024 in drinking water samples and no unusual trends were noted.

(4) Shoreline Sediment Naturally occurring K-40 was detected in shoreline sediment samples collected from the DC (indicator sample location), JRR (control sample location), and EEA (Environmental Education Area). K-40 was also detected during pre-operational shoreline sediment monitoring.

No other radionuclides were detected in the DC, EEA, SC, or JRR shoreline sediment samples during 2024. The AP 07B-004 required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2024 in shoreline sediment samples and no unusual trends were noted.

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 7 of 32 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 2023 Land Use Census.

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

Fish samples were also analyzed for tritium. Fish samples collected from Coffey County Lake had tritium activity detected annual mean (7,384 pCi/kg). The detected tritium activity was attributable to plant operation. An adult consuming 21 kilograms of fish, at the maximum measured tritium concentration (9,886 pCi/kg), would receive a committed effective dose equivalent of 0.013 mRem.

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

No other radionuclides were detected in fish samples during 2024. The AP 07B-004 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 sample locations detected naturally occurring Be-7 and K-40. Be-7 and K-40 activity were also detected pre-operationally.

No other radionuclides were detected in broadleaf vegetation samples collected during the year.

The AP 07B-004 required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2024 in broadleaf vegetation samples and no unusual trends were noted.

(4) Crop Samples Gamma analysis detected naturally occurring K-40 activity to be present in the samples collected from the indicator sample locations and in the samples collected from the control sample location. K-40 activity was also detected during pre-operational crop monitoring. K-40 was the only activity detected in the crop samples.

The AP 07B-004 required lower limits of detection were met. Plant-related activation, corrosion, or fission products were not detected during 2024 in crop samples and no unusual trends were noted.

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 8 of 32 E. Additional Samples Collected (not required by AP 07B-004)

(1) Bottom Sediment Gamma analysis detected naturally occurring K-40 activity to be present in the samples collected from the indicator sample locations and in the samples collected from the control sample location. K-40 activity was also detected during pre-operational bottom sediment monitoring.

Cs-137 activity was detected in pre-operational samples. The Cs-137 activity detected in 2024 indicator sample location bottom sediment samples was within the pre-operational range.

Cs-137 activity detected in 1981 and 1982 was in the range of 79 to 953 pCi/kg. The decay corrected range of pre-operational Cs-137 activity detected is approximately 29 to 353 pCi/kg.

The detected Cs-137 activity in the sample collected from the indicator sample locations were likely due to fallout since the measured activity is within the decay corrected range of pre-operational Cs-137 detected activity.

Chart 7 plots the Cs-137 detected activity from the DC indicator sample location and JRR control sample location bottom sediment samples. The detected Cs-137 activity measured from the DC location reflects a decreasing trend. The Chart 7 trendline indicates Cs-137 activity detected at the JRR control location has also been decreasing. Chart 7 also displays that in recent years, the detected Cs-137 activity for the JRR and DC sample locations overlap.

Fe-55 activity was not detected in the two samples obtained from indicator sample locations.

No other radionuclides were detected in bottom sediment samples. Plant-related activation, corrosion, or fission products were not detected during 2024 in bottom sediment samples and no unusual trends were noted.

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

No other radionuclides were detected in aquatic vegetation samples. Plant-related activation, corrosion, or fission products were not detected during 2024 in aquatic vegetation samples and no unusual trends were noted.

(3) Terrestrial Vegetation Naturally occurring Be-7 and K-40 activity were detected in the terrestrial vegetation indicator location samples. No other radionuclides were detected in terrestrial vegetation. Plant-related activation, corrosion or fission products were not detected during 2024 in terrestrial vegetation and no unusual trends were noted.

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 9 of 32 (4) Soil Naturally occurring K-40 activity was detected in the soil sample that was collected from the indicator location. K-40 activity was also detected during pre-operational soil monitoring.

Cs-137 activity was also in one sample location in 2024. The detectable value is (169 pCi/kg).

The detected Cs-137 activity range from February of 1985 was 255 to 2,160 pCi/kg. The decay corrected range of pre-operational Cs-137 activity detected in soil is approximately 97 to 820 pCi/kg. The detected Cs-137 activity in soil sampled in 2024 is within the decay corrected pre-operational range.

Plant-related activation, corrosion, or fission products were not detected during 2024 in soil samples and no unusual trends were noted.

(5) Turkey (Ingestion Pathway)

Naturally occurring K-40 activity was detected in the turkey sample obtained from the indicator location.

Tritium activity (341.0 pCi/kg) was detected in the turkey sample. The detected tritium activity was attributable to plant operation.

An adult consuming 72.6 kilograms of turkey meat, at the measured tritium concentration (341.0 pCi/kg), would receive a committed effective dose equivalent of 0.002 mRem.

No other radionuclides were detected in the turkey sample. No unusual trends identified (6) Deer (Ingestion Pathway)

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

Tritium activity (1,324 pCi/kg) was also detected in the deer sample. The detected tritium activity was attributable to plant operation.

An adult consuming 72.6 kilograms of deer meat, at the measured tritium concentration (1,324 pCi/kg), would receive a committed effective dose equivalent of 0.006 mRem.

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

III. PROGRAM REVISIONS/CHANGES No revisions or changes were made to AP 07B-004, Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program) during 2024.

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 10 of 32 IV. PROGRAM DEVIATIONS Air Samples No air sample locations failed to meet the requirement for continuous sampler operation. As described in footnote (1) of procedure AP 07B-004, Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program), Table 5-1, deviations are permitted from the required sampling schedule due to malfunction of sampling equipment and other legitimate reasons.

Ground Water Protection The following information is being provided in association with the Nuclear Energy Institute (NEI) Groundwater Protection Industry Initiative:

Describe offsite ground water or surface water sample results that exceeded the REMP reporting criteria that were voluntarily communicated to State/Local officials during the calendar year - None.

V. INTERLABORATORY COMPARISON PROGRAM Environmental, Inc., Midwest Laboratory merged to Microbac Laboratories Inc. in 2024.

WCNOC continued our contract with them to perform radiological analysis of environmental samples. The laboratory participated in the intercomparison studies administered by Environmental Resource Associates, Inc.

Appendix A

is the Interlaboratory Comparison Program Results for Microbac Laboratories Inc. Intercomparison results, in-house spikes, blanks, duplicates and mixed analyte performance evaluation program results are also contained in Appendix A.

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

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

Based upon these assumptions the dose to man from both pathways was calculated to be 0.169 mRem for 2024.

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 (12,685 pCi/L), would receive a committed effective dose equivalent of 0.579 mRem per year. For an adult eating 21 kg of fish per year from Coffey County Lake, using the average tritium activity (7,384 pCi/kg), would receive a committed effective dose equivalent of 0.010 mRem per year. Based upon the REMP results, the dose from both pathways was calculated to be 0.589 mRem per year.

It should be noted that Coffey County Lake is not used as a drinking water source.

Calculating the dose to man for tritium detected in the Coffey County Lake surface water is for comparison purposes only.

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 11 of 32 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 snapshot 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.

VII. Condition reports on REMP for 2024 REMP Dosimeter Location #50 (CR#10031485)

REMP Air Pump Loss of Power (CR#10034552)

REMP OSL Dosimeter Lost (CR#10034752)

Drinking Water missed Samples (CR#10036357)

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 12 of 32 TABLE 1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM DESCRIPTION (SAMPLE COLLECTION SPECIFIED BY AP 07B-004)

EXPOSURE PATHWAY/

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

Radioiodine and Particulates Samples from six locations Continuous sampler operation with sample collection weekly, or more frequently if required, by dust loading.

Analyze radioiodine canister weekly for I-131 Samples from locations near the site boundary in three sectors having the highest calculated annual average D/Q and one supplemental location (Locations 2, 18, 37, or 49 on Figure 1)

Analyze particulate filter weekly for gross beta activity; perform quarterly gamma isotopic analysis composite (by location)

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

Sample from a control location 9.5 to 18.5 miles distant in a low ranked D/Q sector (Location 53 on Figure 5)

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 13 of 32 TABLE 1 (Cont.)

EXPOSURE PATHWAY/

SAMPLE TYPE NUMBER OF SAMPLES AND SAMPLE LOCATIONS SAMPLE COLLECTION FREQUENCY TYPE AND FREQUENCY OF ANALYSIS DIRECT RADIATION (See Figures 2 & 5) 39 routine monitoring stations with two or more dosimeters measuring dose continuously, placed as follows:

Quarterly Gamma dose quarterly An inner ring of stations, one in each meteorological sector 0-3 mile range from the site (Locations 1, 7, 9, 11-13, 18, 26, 27, 29, 30, 37, 38, 46, 49, 55,

& 54 on Figure 2).

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

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

20).

The balance of the stations to be placed in special interest areas such as population centers (Locations 23, 32 & 52), nearby residences

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 14 of 32 TABLE 1 (Cont.)

EXPOSURE PATHWAY/

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

(many locations are near a residence),

schools (Locations 23

& 52), Wilson Cadman Wildlife Education Area (44), CCL Public Fishing Area (46) and in two areas to serve as control stations 10-20 miles distant from the site (Locations 39 and 53 on Figure 5).

WATERBORNE (See Figure 3)

Surface One sample upstream (Location JRR on Figure 3) and one sample downstream (Location SP on Figure 3).

Monthly grab sample Monthly gamma isotopic analysis and composite for tritium analysis quarterly Ground Samples from one or two sources only if likely to be affected.

Quarterly grab sample Quarterly gamma isotopic analysis and tritium analysis Indicator samples at locations hydrologically down-gradient of the site (Locations C-10, C-49, F-1, G-2, J-1 and J-2 on Figure 3);

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

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 15 of 32 TABLE 1 (Cont.)

EXPOSURE PATHWAY/

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

Drinking Sample of municipal water supply at an indicator location downstream of the Neosho River-Wolf Creek confluence (Location IO-DW on Figure 5); control sample from location upstream of the Neosho River-Wolf Creek confluence (Location BW-15 on Figure 3).

Monthly Composite Monthly gamma isotopic analysis and gross beta analysis of composite sample. Quarterly tritium analysis of composites.

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

Semiannually Semiannual gamma isotopic analysis INGESTION (See Figures 4 & 5)

Milk Samples from milking animals at three indicator locations within 5 miles of the 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.

Semimonthly April to November; monthly December-March Gamma isotopic analysis and I-131 analysis of each sample

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 16 of 32 TABLE 1 (Cont.)

EXPOSURE PATHWAY/

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

Fish Indicator samples of 1 to 3 recreationally important species from Coffey County Lake; control samples of similar species from John Redmond Reservoir spillway (Figure 4).

Semiannually Gamma isotopic analysis on edible portions Broadleaf Vegetation Samples of available broadleaf vegetation from two indicator locations (using the criteria from the Land Use Census section) with highest calculated annual average D/Q (Locations A-3 and Q-6 and alternate locations B-1, H-2, N-1 and R-2 on Figure 4); sample of similar broadleaf vegetation from a control location 9.5 to 18.5 miles distant in a low ranked D/Q sector (Location D-2 on Figure 5).

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

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

At time of harvest Gamma isotopic analysis on edible portions

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 17 of 32 TABLE 2 SAMPLE LOCATION IDENTIFIERS, DISTANCES (Miles) AND DIRECTIONS (Sectors)

Sample Type Location Identifier Distance from Reactor Direction Sector Air Particulates and Radioiodine 2

2.7 N

A 18 3.0 SSE H

32 3.1 WNW P

37 2.0 NNW R

49 0.8 NNE B

53 10.8 ENE D

Dosimeters 1

1.4 N

A 2

2.7 N

A 4

4.0 NNE B

5 4.1 NE C

7 2.1 NE C

8 1.7 NNE B

9 2.0 ENE D

11 1.7 E

E 12 1.9 ESE F

13 1.6 SE G

14 2.5 SE G

15 4.6 ESE F

16 4.3 E

E 17 3.7 SE G

18 3.0 SSE H

19 3.9 SSE H

20 3.3 S

J 22 3.9 SSW K

23 4.3 SW L

24 4.1 WSW M

25 3.4 W

N 26 2.4 WSW M

27 2.2 SW L

29 2.7 SSW K

30 2.5 W

N 32 3.1 WNW P

34 4.4 NW Q

35 4.6 NNW R

36 4.2 N

A 37 2.0 NNW R

38 1.2 NW Q

39 13.1 N

A 41 0.8 NNW R

42 0.8 SSE H

43 0.7 WNW P

44 3.0 NNW R

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 18 of 32 TABLE 2 (Cont.)

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

Sample Type Location Identifier Distance from Reactor Direction Sector Dosimeters 46 1.6 WNW P

49 0.8 NNE B

50 3.6 ENE D

51 4.3 S

J 52 3.6 SW L

53 10.8 ENE D

54 0.18 S

K 55 0.25 SSW L

Surface Water JRR 3.7 W

N SP 3.2 SSE H

Ground Water B-12 1.9 NNE B

C-10 3.0 W

N C-49 2.8 SW L

F-1 2.5 ESE F

G-2 3.6 SE G

J-1 3.8 S

J J-2 4.3 S

J Drinking Water BW-15 3.9 SW L

IO-DW 26.1 SSE H

Shoreline Sediment DC 0.8 WNW P

EEA 3.0 NNW R

JRR 3.6 W

N SC 0.8 NNW R

Fish CCL 0.6 E to NNW E to R JRR 3.7 W

N Food/Garden A-3 2.6 N

A B-1 0.8 NNE B

D-2 14.8 ENE D

H-2 3.0 SSE H

Q-6 2.4 NW Q

Crops NR-D1 8.9 S

J NR-D2 11.5 S

J NR-U1 4.0 SSW K

Bottom Sediment DC 0.9 WNW P

EEA 3.0 NNW R

ESW 0.5 E

E JRR 3.7 W

N MUDS 1.5 WNW P

UHS 0.6 E

E Aquatic Vegetation DC ALT 1.5 NW Q

EEA 3.0 NNW R

MUDS 1.5 WNW P

SC 0.8 NNW R

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 19 of 32 TABLE 2 (Cont.)

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

Sample Type Location Identifier Distance from Reactor Direction Sector Terrestrial Vegetation EEA 3.0 NNW R

MUDS 1.5 WNW P

Soil EEA 3.0 NNW R

MUDS 1.5 WNW P

Meat (Turkey)

R1.4 1.4 NNW R

Meat (Deer)

R1.8 1.8 NNW R

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 20 of 32 TABLE 3 OSL Dosimeter Results (mR/Standardized 90-day Quarter)

Location Qtr. 1 (mR)

Qtr. 2 (mR)

Qtr. 3 (mR)

Qtr. 4 (mR)

Total Annual Exposure (mR) 1 17.1 19.6 20.9 20.8 78.4 2

17.5 19.6 15.3 18.7 71.1 4

18.8 20.7 19.9 21.1 80.5 5

17.5 18.0 15.6 19.0 70.1 7

17.1 18.0 18.3 19.9 73.3 8

19.1 21.0 20.2 22.6 82.9 9

15.2 18.6 16.3 17.5 67.6 11 19.4 19.6 19.2 20.5 78.7 12 17.8 19.6 21.2 21.4 80.0 13 19.8 21.3 19.6 23.2 83.9 14 18.4 20.4 16.9 22.6 78.3 15 15.2 20.0 17.9 18.1 71.2 16 16.1 19.0 18.9 19.3 73.3 17 16.8 18.6 16.9 20.2 72.5 18 17.5 17.3 18.3 18.1 71.2 19 18.4 21.3 20.6 20.5 80.8 20 16.5 18.6 17.9 21.1 74.1 22 18.8 21.3 19.2 23.8 83.1 23 15.5 20.0 15.9 19.6 71.0 24 17.8 21.0 18.6 17.8 75.2 25 14.8 17.3 18.6 16.3 67.0 26 16.5 18.3 18.6 16.9 70.3 27 17.5 21.7 18.6 21.1 78.9 29 13.2 16.6 18.6 17.2 65.6 30 17.5 21.7 18.6 19.6 77.4 32 14.5 17.6 18.6 20.5 71.2 34 18.1 22.3 18.6 20.8 79.8 35 17.1 20.3 18.6 20.2 76.2 36 18.8 20.0 18.6 18.4 75.8 37 15.5 17.6 18.6 18.1 69.8 38 17.8 19.0 18.6 20.5 75.9 39 17.1 17.3 18.6 18.1 71.1 41 16.5 18.3 18.6 22.9 76.3 42 13.5 11.2 18.6 13.2 56.5 43 12.8 12.6 18.6 13.5 57.5 44 15.5 18.3 18.6 21.1 73.5 46 16.8 20.0 18.6 18.7 74.1 49 15.2 17.6 18.6 15.1 66.5 50 N/A 20.0 18.6 19.3 57.9 51 18.4 18.3 18.6 19.3 74.6 52 19.8 20.0 18.6 22.9 81.3 53 19.1 19.3 18.6 19.9 76.9 54 19.1 21.7 18.6 18.4 77.8 55 20.4 23.3 18.6 18.7 81.0

• NA Reference CR#10031485 for explanation on missing data

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 21 of 32 FIGURE 1

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 22 of 32 FIGURE 2

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 23 of 32 FIGURE 3

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 24 of 32 FIGURE 4

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 25 of 32 FIGURE 5

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 26 of 32 CHART 1

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 27 of 32 CHART 2

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 28 of 32 CHART 3

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 29 of 32 CHART 4

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 30 of 32 CHART 5

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 31 of 32 CHART 6

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page 32 of 32 CHART 7

NOTE:

Appendix A is updated four times a year. The complete appendix is included in March, June, September and December monthly progress reports only.

January, 2024 through December, 2024 APPENDIX A INTERLABORATORY AND INTRALABORATORY COMPARISON PROGRAM RESULTS

A-1 Microbac Laboratories - Northbrook (previously Environmental Inc.) has participated in interlaboratory comparison (crosscheck) programs since the formulation of its quality program in December 1971.

These programs are operated by agencies and/or companies which supply environmental sample types containing concentrations of radionuclides known to the issuing entity 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 RAD PT Study Proficiency Testing Program administered by Environmental Resource Associates, serving as a replacement for studies conducted previously by the U.S. EPA Environmental Monitoring Systems Laboratory, Las Vegas, Nevada.

Table A-2 lists results for thermoluminescent dosimeters (TLDs), via irradiation and evaluation by the University of Wisconsin-Madison Radiation Calibration Laboratory at the University of Wisconsin Medical Radiation Research Center.

Table A-3 lists results of the analyses on intralaboratory 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 intralaboratory blank samples for the past twelve months. Data for previous years available upon request.

Table A-5 lists analytical results from the intralaboratory duplicate program for the past twelve months. Acceptance is based on each result being within 25% of the mean of the two results or the two sigma uncertainties of each result overlap.

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

Results in Table A-7 were obtained through participation in the MRAD PT Study Proficiency Testing Program administered by Environmental Resource Associates, serving as a replacement for studies conducted previously by the Environmental Measurement Laboratory Quality Assessment Program (EML).

Attachment A lists the laboratory acceptance criteria for various analyses.

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

Appendix A Interlaboratory/ Intralaboratory Comparison Program Results

A-2 Analysis Ratio of lab result to known value.

Gamma Emitters 0.8 to 1.2 Strontium-89, 0.8 to 1.2 Strontium-90 Potassium-40 0.8 to 1.2 Gross alpha 0.5 to 1.5 Gross beta 0.8 to 1.2 Tritium 0.8 to 1.2 Radium-226, 0.7 to 1.3 Radium-228 Plutonium 0.8 to 1.2 Iodine-129, 0.8 to 1.2 Iodine-131 Nickel-63, 0.7 to 1.3 Technetium-99, Uranium-238 Iron-55 0.8 to 1.2 Other Analyses 0.8 to 1.2 Attachment A ACCEPTANCE CRITERIA FOR INTRALABORATORY SPIKED SAMPLES

A-3 TABLE A-1. Interlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA)a.

RAD study Lab Code Date Analysis ERA Value Acceptance RAD-022724M (study dates 2/27/24 - 3/11/24)

ERDW-323 10/7/2022 Ba-133 67.3 +/- 4.1 79.4 62.3 - 97.0 Pass ERDW-323 10/7/2022 Cs-134 20.6 +/- 2.6 30.5 18.2 - 42.8 Pass ERDW-323 10/7/2022 Cs-137 221 +/- 7 212 172 - 252 Pass ERDW-323 10/7/2022 Co-60 48.8 +/- 4.2 51.4 37.1 - 65.7 Pass ERDW-323 10/7/2022 Zn-65 82.6 +/- 9 216 167 - 265 Fail b ERDW-325 10/7/2022 Gr. Alpha 15.4 +/- 1.6 16.9 11.1 - 22.7 Pass ERDW-325 10/7/2022 G. Beta 48.2 +/- 1.4 53.0 39.1 - 66.9 Pass ERDW-321 10/7/2022 Ra-226 15.9 +/- 0.9 19.0 16.2 - 21.8 Fail c ERDW-321 10/7/2022 Ra-228 3.81 +/- 1.04 2.33 1.04 - 3.60 Fail d ERDW-321 10/7/2022 Uranium 8.745 +/- 1.070 8.53 7.10 - 10.0 Pass ERDW-327 4/10/2023 H-3 12,740 +/- 366 12,700 10,500 - 14,900 Pass RAD-137 Study (study dates 4/08/24 - 5/23/24)

ERDW-715 4/8/2024 Ba-133 71.2 +/- 5.5 65.9 50.1 - 81.7 Pass ERDW-715 4/8/2024 Cs-134 70.4 +/- 9.5 57.8 42.8 - 72.8 Pass ERDW-715 4/8/2024 Cs-137 188 +/- 11 186 149 - 233 Pass ERDW-715 4/8/2024 Co-60 100 +/- 10 98.8 79.7 - 118 Pass ERDW-715 4/8/2024 Zn-65 231 +/- 15 240 188 - 292 Pass ERDW-713 4/8/2024 Gr. Alpha 39.4 +/- 1.9 52.6 39.6 - 65.8 Fail e ERDW-713 4/8/2024 G. Beta 45.5 +/- 1.4 46.5 33.9 - 59.1 Pass ERDW-711 4/8/2024 Ra-226 14.3 +/- 0.8 13.4 11.10 - 15.7 Pass ERDW-711 4/8/2024 Ra-228 6.01 +/- 1.19 6.24 4.2 - 8.3 Pass ERDW-711 4/8/2024 Uranium 63.5 +/- 2.4 59.3 52.8 - 65.8 Pass ERDW-717 4/8/2024 H-3 20,400 +/- 448 21,300 18,200 - 24,400 Pass RAD-138 Study (study dates 7/08/24 - 8/22/24)

ERDW-1546 7/8/2024 Ba-133 41.4 +/- 5.9 38.2 25.2 - 51.2 Pass ERDW-1546 7/8/2024 Cs-134 18.6 +/- 8.0 18.9 7.81 - 30.0 Pass ERDW-1546 7/8/2024 Cs-137 54.4 +/- 13.3 57.0 32.9 - 81.1 Pass ERDW-1546 7/8/2024 Co-60 82.8 +/- 7.1 76.8 59.9 - 93.7 Pass ERDW-1546 7/8/2024 Zn-65 348 +/- 30 312 253 - 371 Pass ERDW-1548 7/8/2024 Gr. Alpha 9.05 +/- 1.26 13.0 7.94 - 18.1 Pass ERDW-1548 7/8/2024 G. Beta 17.3 +/- 1.0 20.6 13.2 - 28.0 Pass ERDW-1552 7/8/2024 Ra-226 20.4 +/- 1.0 17.2 14.6 - 19.8 Fail f ERDW-1552 7/8/2024 Ra-228 3.72 +/- 0.96 4.63 2.88 - 6.38 Pass ERDW-1552 7/8/2024 Uranium 36.2 +/- 2.4 36.8 32.5 - 41.1 Pass ERDW-1554 7/8/2024 H-3 7,840 +/- 290 7,550 5,870 - 9,230 Pass ERDW-1550 7/8/2024 I-131 20.1 +/- 0.9 27.9 24.2 - 31.6 Fail g a Results obtained by Microbac Laboratories Inc. - Northbrook as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resource Associates (ERA).

b An incorrect reference date was used in the calculation of the gamma emitters. If the correct date was used, all analytes would have passed ERA acceptance criteria. The Zn-65 result would have been 212 +/- 30 pCi/L.

c No obvious conclusion could be determined for the low result. It's possible that a small leak from the radon bubbler may have allowed radon gas to escape thereby leading to the low result. Subsequent ERA study RAD-137 passed for Ra-226.

d The batch recovery value as determined by the EPA method could have been biased artificially low thereby causing the result to have a high bias outside the upper acceptance limit. Subsequent ERA studies RAD-137,138 passed for Ra-228.

e Data was reviewed but no obvious issue could be determined. Subsequent ERA study RAD-138 passed for both Gross Alpha and Gross Beta.

f The lab continues to investigate the Ra-226 performance issues. The procedure has been revised to more closely follow the EPA method. Results are being compiled and a subsequent ERA study will be ordered to validate the revised procedure.

g ERA added stable iodine carrier to the PT sample at a concentration of 0.20 mg/L. The calculation of the results that were submitted for this study did not take this added iodine into account when calculating the chemical yield or recovery.

Incorporating the ERA added stable iodine into the calculattions; recoveries dropped from 88.32% and 90.52% to 64.56% and 66.17%. The adjusted results are: 29.42 pCi/L and 28.06 pCi/L which are both within the acceptance range.

Concentration (pCi/L)

Laboratory Acceptance Result Limits

A-4 TABLE A-2. Thermoluminescent Dosimetry, (TLD, CaSO4: Dy Cards).a Lab Code Irradiation Delivered Reportedb Date Description Dose Dose Environmental, Inc.

Group 1 2024-25-1 1/6/2025 Spike 1 92.0 91.8 0.00 2024-25-1 1/6/2025 Spike 2 92.0 89.7

-0.03 2024-25-1 1/6/2025 Spike 3 92.0 92.0 0.00 2024-25-1 1/6/2025 Spike 4 92.0 92.9 0.01 2024-25-1 1/6/2025 Spike 5 92.0 91.8 0.00 2024-25-1 1/6/2025 Spike 6 92.0 98.0 0.07 2024-25-1 1/6/2025 Spike 7 92.0 94.6 0.03 2024-25-1 1/6/2025 Spike 8 92.0 94.2 0.02 2024-25-1 1/6/2025 Spike 9 92.0 95.4 0.04 2024-25-1 1/6/2025 Spike 10 92.0 91.3

-0.01 2024-25-1 1/6/2025 Spike 11 92.0 89.4

-0.03 2024-25-1 1/6/2025 Spike 12 92.0 97.7 0.06 2024-25-1 1/6/2025 Spike 13 92.0 94.1 0.02 2024-25-1 1/6/2025 Spike 14 92.0 92.2 0.00 2024-25-1 1/6/2025 Spike 15 92.0 92.9 0.01 2024-25-1 1/6/2025 Spike 16 92.0 91.7 0.00 2024-25-1 1/6/2025 Spike 17 92.0 87.4

-0.05 2024-25-1 1/6/2025 Spike 18 92.0 94.7 0.03 2024-25-1 1/6/2025 Spike 19 92.0 91.0

-0.01 2024-25-1 1/6/2025 Spike 20 92.0 92.5 0.01 Mean (Spike 1-20) 92.8 0.01 Passd Standard Deviation (Spike 1-20) 2.6 0.03 Passd a TLD's were irradiated by the University of Wisconsin-Madison Radiation Calibration Laboratory following ANSI N13.37 protocol from a known air kerma rate. TLD's were read and the results were submitted by Microbac Laboratories - Northbrook to the University of Wisconsin-Madison Radiation Calibration Laboratory for comparison to the delivered dose.

b Reported dose was converted from exposure (R) to Air Kerma (cGy) using a conversion of 0.876. Conversion from air kerma to ambient dose equivalent for Cs-137 at the reference dose point H*(10)Ka = 1.20. mrem/cGy = 1000.

c Performance Quotient (P) is calculated as ((reported dose - conventionally true value) ÷ conventionally true value) where the conventionally true value is the delivered dose.

d Acceptance is achieved when neither the absolute value of the mean of the P values, nor the standard deviation of the P values exceed 0.15.

mrem Performancec Quotient (P)

A-5 TABLE A-2. Thermoluminescent Dosimetry, (TLD, CaSO4: Dy Cards).a Lab Code Irradiation Delivered Reportedb Date Description Dose Dose Environmental, Inc.

Group 2 2024-25-2 1/6/2025 Spike 21 74.0 77.5 0.05 2024-25-2 1/6/2025 Spike 22 74.0 77.6 0.05 2024-25-2 1/6/2025 Spike 23 74.0 73.2

-0.01 2024-25-2 1/6/2025 Spike 24 74.0 75.4 0.02 2024-25-2 1/6/2025 Spike 25 74.0 75.3 0.02 2024-25-2 1/6/2025 Spike 26 74.0 77.8 0.05 2024-25-2 1/6/2025 Spike 27 74.0 73.1

-0.01 2024-25-2 1/6/2025 Spike 28 74.0 74.0 0.00 2024-25-2 1/6/2025 Spike 29 74.0 75.8 0.02 2024-25-2 1/6/2025 Spike 30 74.0 76.5 0.03 2024-25-2 1/6/2025 Spike 31 74.0 73.5

-0.01 2024-25-2 1/6/2025 Spike 32 74.0 75.5 0.02 2024-25-2 1/6/2025 Spike 33 74.0 76.5 0.03 2024-25-2 1/6/2025 Spike 34 74.0 76.4 0.03 2024-25-2 1/6/2025 Spike 35 74.0 75.1 0.01 2024-25-2 1/6/2025 Spike 36 74.0 72.8

-0.02 2024-25-2 1/6/2025 Spike 37 74.0 76.0 0.03 2024-25-2 1/6/2025 Spike 38 74.0 74.9 0.01 2024-25-2 1/6/2025 Spike 39 74.0 75.4 0.02 2024-25-2 1/6/2025 Spike 40 74.0 70.8

-0.04 Mean (Spike 21-40) 75.2 0.02 Passd Standard Deviation (Spike 21-40) 1.8 0.02 Passd a TLD's were irradiated by the University of Wisconsin-Madison Radiation Calibration Laboratory following ANSI N13.37 protocol from a known air kerma rate. TLD's were read and the results were submitted by Microbac Laboratories - Northbrook to the University of Wisconsin-Madison Radiation Calibration Laboratory for comparison to the delivered dose.

b Reported dose was converted from exposure (R) to Air Kerma (cGy) using a conversion of 0.876. Conversion from air kerma to ambient dose equivalent for Cs-137 at the reference dose point H*(10)Ka = 1.20. mrem/cGy = 1000.

c Performance Quotient (P) is calculated as ((reported dose - conventionally true value) ÷ conventionally true value) where the conventionally true value is the delivered dose.

d Acceptance is achieved when neither the absolute value of the mean of the P values, nor the standard deviation of the P values exceed 0.15.

mrem Performancec Quotient (P)

A-6 TABLE A-3. Intralaboratory "Spiked" Samples Lab Codeb Reference Analysis Known Ratio Date Activity Acceptance Lab/Known SPDW-60025 1/12/2024 Gr. Alpha 43.3 +/- 2.4 47.9 24.0 - 57.5 Pass 0.90 SPDW-60025 1/12/2024 Gr. Beta 28.9 +/- 1.3 28.6 22.9 - 34.3 Pass 1.01 SPDW-60042 2/2/2024 H-3 21,225 459 22,100 17,680 - 26,520 Pass 0.96 SPDW-60059 2/14/2024 Gr. Alpha 37.6 +/- 2.8 32.2 16.1 - 38.6 Pass 1.17 SPDW-60059 2/14/2024 Gr. Beta 168 +/- 3 160 128.0 - 192.0 Pass 1.05 SPDW-60067 2/13/2024 H-3 20,925 451 22,100 17,680 - 26,520 Pass 0.95 SPDW-60097 2/28/2024 Gr. Alpha 27.7 +/- 2.1 32.2 16.1 - 38.6 Pass 0.86 SPDW-60097 2/28/2024 Gr. Beta 160 +/- 3 160 128.0 - 192.0 Pass 1.00 SPDW-60100 2/26/2024 H-3 21,582 +/- 462 22,100 17,680 - 26,520 Pass 0.98 SPDW-60016 3/7/2024 H-3 20,572 +/- 449 22,100 17,680 - 26,520 Pass 0.93 SPDW-60133 3/14/2024 Gr. Alpha 23.6 +/- 2.1 32.2 16.1 - 38.6 Pass 0.73 SPDW-60133 3/14/2024 Gr. Beta 171 +/- 3 160 128.0 - 192.0 Pass 1.07 SPDW-60150 3/22/2024 H-3 20,618 +/- 450 22,100 17,680 - 26,520 Pass 0.93 SPDW-60191 3/21/2024 Ra-226 13.2 +/- 0.4 12.3 8.6 - 16.0 Pass 1.07 SPDW-60154 3/25/2024 Ra-228 12.7 +/- 1.6 15.4 10.8 - 20.0 Pass 0.82 LCS-W-052924 4/8/2024 Ba-133 55.7 +/- 4.3 65.9 52.7 - 79.1 Pass 0.85 LCS-W-052924 4/8/2024 Cs-134 50.1 +/- 3.4 57.8 46.2 - 69.4 Pass 0.87 LCS-W-052924 4/8/2024 Cs-137 172 +/- 6 186 149 - 223 Pass 0.92 LCS-W-052924 4/8/2024 Co-60 95.3 +/- 4.0 99 79.0 - 119 Pass 0.96 LCS-W-052924 4/8/2024 Zn-65 224 +/- 12 240 192 - 288 Pass 0.93 SPDW-60184 4/9/2024 Gr. Alpha 21.0 +/- 2.0 32.2 16.1 - 38.6 Pass 0.65 SPDW-60184 4/9/2024 Gr. Beta 158 +/- 3 160 128.0 - 192.0 Pass 0.99 SPDW-60198 4/15/2024 H-3 20,822 +/- 453 22,100 17,680 - 26,520 Pass 0.94 SPDW-60213 4/25/2024 Ra-228 15.4 +/- 2.0 15.3 10.7 - 19.9 Pass 1.01 SPDW-60215 4/26/2024 H-3 20,400 +/- 447 22,100 17,680 - 26,520 Pass 0.92 SPDW-60267 4/11/2024 Ra-226 10.8 +/- 0.3 12.3 8.6 - 16.0 Pass 0.88 SPDW-60236 5/10/2024 H-3 20,415 +/- 448 22,100 17,680 - 26,520 Pass 0.92 SPDW-60253 5/16/2024 Ra-228 13.6 +/- 1.8 15.3 10.7 - 19.9 Pass 0.89 SPDW-60302 5/29/2024 Gr. Alpha 18.1 +/- 1.7 32.2 16.1 - 38.6 Pass 0.56 SPDW-60302 5/29/2024 Gr. Beta 163 +/- 3 160 128 - 192 Pass 1.02 SPDW-60307 5/23/2024 Ra-226 13.0 +/- 0.5 12.3 8.6 - 16.0 Pass 1.05 SPDW-60294 5/28/2024 H-3 20,840 +/- 463 22,100 17,680 - 26,520 Pass 0.94 SPDW-60314 6/6/2024 Ra-228 11.9 +/- 1.6 15.3 10.7 - 19.9 Pass 0.78 SPDW-60331 6/10/2024 H-3 20,602 +/- 459 22,100 17,680 - 26,520 Pass 0.93 SPDW-60357 5/30/2024 Ra-226 11.8 +/- 0.4 12.3 8.6 - 16.0 Pass 0.96 SPDW-60361 6/27/2024 Gr. Alpha 21.7 +/- 2.0 32.2 16.1 - 38.6 Pass 0.67 SPDW-60361 6/27/2024 Gr. Beta 151 +/- 2 160 128 +/- 192 Pass 0.94 SPDW-60425 6/24/2024 Ra-226 12.8 +/- 0.4 12.3 8.6 - 16.0 Pass 1.04 SPDW-60393 7/10/2024 H-3 20,368 +/- 454 22,100 17,680 - 26,520 Pass 0.92 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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

c Results are based on single determinations.

d Acceptance criteria are listed in Attachment A of this report.

Concentrationa Laboratory results Control 2s, n=1c Limitsd

A-7 TABLE A-3. Intralaboratory "Spiked" Samples Lab Codeb Reference Analysis Known Ratio Date Activity Acceptance Lab/Known SPDW-60411 7/22/2024 Gr. Alpha 18.2 +/- 1.9 32.2 16.1 - 38.6 Pass 0.57 SPDW-60411 7/22/2024 Gr. Beta 155 +/- 3 160 128 - 192 Pass 0.97 SPDW-60417 7/23/2024 U (Natural) 8.14 +/- 0.92 7.36 5.15 - 9.57 Pass 1.11 SPDW-60452 7/31/2024 Ra-226 11.5 +/- 0.4 12.3 8.6 - 16.0 Pass 0.93 SPDW-60530 8/12/2024 Ra-226 12.3 +/- 0.4 12.3 8.6 - 16.0 Pass 1.00 LCS-08/26/24 7/8/2024 Ba-133 31.2 +/- 4.3 38.2 30.6 - 45.8 Pass 0.82 LCS-08/26/24 7/8/2024 Cs-134 22.0 +/- 3.0 18.9 15.1 - 22.7 Pass 1.16 LCS-08/26/24 7/8/2024 Cs-137 68.0 +/- 6.5 57.0 45.6 - 68.4 Pass 1.19 LCS-08/26/24 7/8/2024 Co-60 80.8 +/- 5.0 76.8 61.4 - 92.2 Pass 1.05 LCS-08/26/24 7/8/2024 Zn-65 337 +/- 15 312 250 - 374 Pass 1.08 LCS-S-09/04/24 3/19/2018 Ac-228 1,122 +/- 120 1,240 992 - 1,488 Pass 0.90 LCS-S-09/04/24 3/19/2018 Bi-212 1,105 +/- 293 1,240 992 - 1,488 Pass 0.89 LCS-S-09/04/24 3/19/2018 Bi-214 1,563 +/- 49 1,760 1,408 - 2,112 Pass 0.89 LCS-S-09/04/24 3/19/2018 Co-60 7,251 +/- 94 8,060 6,448 - 9,672 Pass 0.90 LCS-S-09/04/24 3/19/2018 Pb-214 1,489 +/- 54 1,850 1,480 - 2,220 Pass 0.80 SPDW-60527 9/10/2024 H-3 20,297 +/- 453 22,100 17,680 - 26,520 Pass 0.92 SPDW-60546 9/13/2024 S-90 15.9 +/- 1.0 15.4 12.3 - 18.5 Pass 1.03 SPDW-60559 9/25/2024 Gr. Alpha 7.5 +/- 1.1 13.0 6.5 - 15.6 Pass 0.58 SPDW-60559 9/25/2024 Gr. Beta 21.5 +/- 1.3 20.6 16.5 - 24.7 Pass 1.04 SPDW-60584 10/9/2024 H-3 20,016 +/- 452 22,100 17,680 - 26,520 Pass 0.91 LCS-W-090324 4/8/2024 Ba-133 65.5 +/- 5.8 65.9 53 - 79 Pass 0.99 LCS-W-090324 4/8/2024 Cs-134 54.5 +/- 5.1 57.8 46 - 69 Pass 0.94 LCS-W-090324 4/8/2024 Cs-137 189 +/- 12 186 149 - 223 Pass 1.02 LCS-W-090324 4/8/2024 Co-60 101 +/- 9 98.8 79 - 119 Pass 1.02 LCS-W-090324 4/8/2024 Zn-65 260 +/- 25 240 192 - 288 Pass 1.08 LCS-W-10/03/24 8/1/2023 Cs-134 288 +/- 5 305 244 - 366 Pass 0.94 LCS-W-10/03/24 8/1/2023 Cs-137 257 +/- 8 235 188 - 282 Pass 1.09 LCS-W-10/03/24 8/1/2023 Co-57 550 +/- 16 521 417 - 625 Pass 1.06 LCS-W-10/03/24 8/1/2023 Mn-54 364 +/- 16 343 274 - 412 Pass 1.06 LCS-W-10/03/24 8/1/2023 Zn-65 489 +/- 28 516 413 - 619 Pass 0.95 LCS-W-10/05/24 7/12/2021 Ba-133 42.5 +/- 3.5 45.5 36 - 55 Pass 0.93 LCS-W-10/05/24 7/12/2021 Cs-134 88.1 +/- 6.2 87.5 70 - 105 Pass 1.01 LCS-W-10/05/24 7/12/2021 Cs-137 219 +/- 6 208 166 - 250 Pass 1.05 LCS-W-10/05/24 7/12/2021 Co-60 88.8 +/- 5.1 87.1 70 - 105 Pass 1.02 LCS-AP-10/05/24 8/1/2022 Cs-137 52.1 +/- 2.0 47.5 38 - 57 Pass 1.10 LCS-AP-10/05/24 8/1/2022 Co-57 99.8 +/- 6.5 94.5 76 - 113 Pass 1.06 LCS-AP-10/05/24 8/1/2022 Co-60 59.9 +/- 2.1 57.0 46 - 68 Pass 1.05 LCS-AP-10/05/24 8/1/2022 Mn-54 61.2 +/- 7.7 58.9 47 - 71 Pass 1.04 LCS-AP-10/05/24 8/1/2022 Zn-65 43.1 +/- 13.5 49.4 40 - 59 Pass 0.87 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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

c Results are based on single determinations.

d Acceptance criteria are listed in Attachment A of this report.

Concentrationa Laboratory results Control 2s, n=1c Limitsd

A-8 TABLE A-3. Intralaboratory "Spiked" Samples Lab Codeb Reference Analysis Known Ratio Date Activity Acceptance Lab/Known LCS-S-092424 3/19/2018 K-40 9,021 +/- 385 10,600 8,480 - 12720 Pass 0.85 LCS-S-092424 3/19/2018 Cs-134 4,450 +/- 235 5,330 4,264 - 6396 Pass 0.83 LCS-S-092424 3/19/2018 Cs-137 3,773 +/- 55 4,210 3,368 - 5052 Pass 0.90 LCS-S-092424 3/19/2018 Co-60 6,958 +/- 96 8,060 6,448 - 9672 Pass 0.86 LCS-S-092424 3/19/2018 Pb-214 1,638 +/- 59 1,850 1,480 - 2220 Pass 0.89 LCS-S-092424 3/19/2018 Bi-214 1,608 +/- 50 1,760 1,408 - 2112 Pass 0.91 LCS-S-092424 3/19/2018 Ac-228 1,105 +/- 117 1,240 992 - 1488 Pass 0.89 LCS-S-101424 2/1/2024 Co-60 15,340 +/- 87 17,820 14,256 - 21,384 Pass 0.86 LCS-S-101424 2/1/2024 Cs-134 8,700 +/- 62 8,694 6,955 - 10,433 Pass 1.00 LCS-S-101424 2/1/2024 Cs-137 37,330 +/- 26 41,850 33,480 - 50,220 Pass 0.89 LCS-S-101424 2/1/2024 K-40 11,550 +/- 411 13,095 10,476 - 15,714 Pass 0.88 LCS-S-101424 2/1/2024 Mn-54 8,080 +/- 125 8,964 7,171 - 10,757 Pass 0.90 LCS-S-101424 2/1/2024 Zn-65 16,260 +/- 273 18,981 15,185 - 22,777 Pass 0.86 LCS-W-1014224 2/1/2024 Co-57 544 +/- 24 554 443 - 664 Pass 0.98 LCS-W-1014224 2/1/2024 Cs-134 281 +/- 8 289 231 - 347 Pass 0.97 LCS-W-1014224 2/1/2024 Cs-137 254 +/- 11 257 205 - 308 Pass 0.99 LCS-W-1014224 2/1/2024 Mn-54 369 +/- 21 365 292 - 437 Pass 1.01 LCS-W-1014224 2/1/2024 Zn-65 501 +/- 38 489 391 - 586 Pass 1.03 LCS-VE-100524 2/1/2024 Co-57 544 +/- 5 521 417 - 625 Pass 1.04 LCS-VE-100524 2/1/2024 Cs-134 281 +/- 8 305 244 - 366 Pass 0.92 LCS-VE-100524 2/1/2024 Cs-137 254 +/- 11 235 188 - 282 Pass 1.08 LCS-VE-100524 2/1/2024 Zn-65 501 +/- 38 516 413 - 619 Pass 0.97 LCS-VE-100524 2/1/2024 Mn-54 369 +/- 21 343 274 - 411 Pass 1.08 SPDW-60583 10/9/2024 H-3 20,016 +/- 452 22,100 17,680 - 26,520 Pass 0.91 SPDW-60604 10/25/2024 H-3 19,814 +/- 447 22,100 17,680 - 26,520 Pass 0.90 SPDW-60622 11/14/2024 Gr. Alpha 12.5 +/- 2.9 13.0 6.5 - 15.6 Pass 0.96 SPDW-60622 11/14/2024 Gr. Beta 17.8 +/- 2.3 20.6 16.5 - 24.7 Pass 0.86 SPDW-60635 10/10/2024 Ra-226 14.9 +/- 0.5 12.3 8.6 - 16.0 Pass 1.21 SPDW-60631 12/2/2024 H-3 20,384 +/- 453 22,100 17,680 - 26,520 Pass 0.92 SPDW-60641 12/17/2024 H-3 21,520 +/- 468 22,100 17,680 - 26,520 Pass 0.97 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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

c Results are based on single determinations.

d Acceptance criteria are listed in Attachment A of this report.

Concentrationa Laboratory results Control 2s, n=1c Limitsd

A-9 TABLE A-4. Intralaboratory "Blank" Samples Lab Codeb Sample Collection Analysisc Type Date LLD SPDW-60024 Water 1/12/2024 Gr. Alpha 0.70 0.14 +/- 0.50 2

SPDW-60024 Water 1/12/2024 Gr. Beta 0.83

-0.60 +/- 0.56 4

SPW-3913 Water 2/2/2024 Tc-99 11.8

-12.3 +/- 7.0 200 SPDW-60041 Water 2/2/2024 H-3 177 68 +/- 96 200 SPDW-60058 Water 2/14/2024 Gr. Alpha 0.51

-0.10 +/- 0.35 2

SPDW-60058 Water 2/14/2024 Gr. Beta 0.71 0.19 +/- 0.50 4

SPDW-60147 Water 2/21/2024 Ra-226 0.04 0.18 +/- 0.03 2

SPDW-60099 Water 2/26/2024 H-3 179

-89 +/- 84 200 SPDW-60097 Water 2/28/2024 Gr. Alpha 0.53 0.29 +/- 0.39 2

SPDW-60097 Water 2/28/2024 Gr. Beta 0.79

-0.42 +/- 0.54 4

SPDW-60141 Water 3/19/2024 I-131 0.18

-0.10 +/- 0.10 1

SPDW-60149 Water 3/22/2024 H-3 174

-2 +/- 86 200 SPDW-60115 Water 3/7/2024 H-3 175 20 +/- 85 200 SPDW-60129 Water 3/11/2024 Ra-228 0.74 0.07 +/- 0.35 2

SPDW-60132 Water 3/14/2024 Gr. Alpha 0.51

-0.20 +/- 0.34 2

SPDW-60132 Water 3/14/2024 Gr. Beta 0.75

-0.07 +/- 0.52 4

SPDW-60190 Water 3/21/2024 Ra-226 0.04

-0.14 +/- 0.03 2

SPDW-60155 Water 3/25/2024 Ra-228 1.46

-0.13 +/- 0.66 2

SPDW-60183 Water 4/9/2024 Gr. Alpha 0.66

-0.09 +/- 0.46 2

SPDW-60183 Water 4/9/2024 Gr. Beta 0.76 0.11 +/- 0.54 4

SPDW-60266 Water 4/11/2024 Ra-226 0.04

-0.15 +/- 0.03 2

SPDW-60197 Water 4/15/2024 H-3 174 53 +/- 84 200 SPDW-60212 Water 4/25/2024 Ra-228 0.90 0.03 +/- 0.42 2

SPDW-60214 Water 4/26/2024 H-3 170 27 +/- 80 200 SPDW-60235 Water 5/10/2024 H-3 174

-7 +/- 81 200 SPDW-60252 Water 5/16/2024 Ra-228 0.68 0.72 +/- 0.39 2

SPDW-60294 Water 5/28/2024 H-3 188

-43 +/- 88 200 SPDW-60295 Water 5/28/2024 Sr-89 0.62 0.16 +/- 0.44 5

SPDW-60295 Water 5/28/2024 Sr-90 0.66

-0.20 +/- 0.28 1

SPDW-60301 Water 5/29/2024 Gr. Alpha 0.49

-0.16 +/- 0.33 2

SPDW-60301 Water 5/29/2024 Gr. Beta 0.76 0.14 +/- 0.54 4

SPDW-60306 Water 5/23/2024 Ra-228 0.17

-0.30 +/- 0.38 2

SPDW-60356 Water 5/30/2024 Ra-226 0.04 0.12 +/- 0.03 2

SPDW-60313 Water 6/6/2024 Ra-228 0.76

-0.01 +/- 0.35 2

SPDW-60330 Water 6/10/2024 H-3 183 12 +/- 85 200 SPDW-60340 Water 6/17/2024 I-131 0.15

-0.04 +/- 0.08 1

SPDW-60360 Water 6/27/2024 Gr. Alpha 0.46

-0.12 +/- 0.31 2

SPDW-60360 Water 6/27/2024 Gr. Beta 0.75 0.10 +/- 0.53 4

SPDW-60424 Water 6/24/2024 Ra-226 0.04

-0.14 +/- 0.09 2

a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/g).

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

c I-131(G); iodine-131 as analyzed by gamma spectroscopy.

d Activity reported is a net activity result.

Concentrationa Laboratory results (4.66s)

Acceptance Activityd Criteria (4.66 s)

A-10 TABLE A-4. Intralaboratory "Blank" Samples Lab Codeb Sample Collection Analysisc Type Date LLD SPDW-60392 Water 7/10/2024 H-3 183

-28 +/- 83 200 SPDW-60411 Water 7/22/2024 Gr. Alpha 0.42

-0.06 +/- 0.29 2

SPDW-60411 Water 7/22/2024 Gr. Beta 0.71 0.40 +/- 0.51 4

SPDW-60416 Water 7/23/2024 U (Natural) 0.56

-0.16 +/- 0.66 1

SPDW-60418 Water 7/24/2024 Ra-228 0.65 0.93 +/- 0.40 2

SPDW-60451 Water 7/31/2024 Ra-226 0.07 0.02 +/- 0.06 2

SPW-1901 Water 8/6/2024 Ni-63 87

-144 +/- 51 200 SPDW-60462 Water 8/16/2024 Ra-228 0.58 0.08 +/- 0.28 2

SPDW-60529 Water 8/12/2024 Ra-226 0.04

-0.07 +/- 0.03 2

SPDW-60522 Water 9/5/2024 I-131 0.11

-0.09 +/- 0.07 1

SPDW-60526 Water 9/10/2024 H-3 183 9 +/- 86 200 SPDW-60592 Water 9/11/2024 Ra-226 0.06

-0.11 +/- 0.05 2

SPDW-60545 Water 9/13/2024 Sr-89 0.56

-0.06 +/- 0.43 5

SPDW-60545 Water 9/13/2024 Sr-90 0.52 0.06 +/- 0.25 1

SPDW-60560 Water 9/26/2024 H-3 180 88 +/- 89 200 SPDW-60594 Water 10/16/2024 Ra-228 0.73 0.43 +/- 0.39 2

SPDW-60634 Water 10/10/2024 Ra-226 0.05

-0.07 +/- 0.04 2

MB-102124 Water 10/21/2024 Co-57 4.76 0.87 +/- 2.53 10 MB-102124 Water 10/21/2024 Cs-134 3.88

-3.36 +/- 2.68 10 MB-102124 Water 10/21/2024 Cs-137 5.73 1.08 +/- 2.64 10 MB-102124 Water 10/21/2024 Mn-54 5.17 0.03 +/- 2.65 10 MB-102124 Water 10/21/2024 Zn-65 6.83

-1.76 +/- 5.61 10 SPDW-60614 Water 11/8/2024 H-3 185

-29 +/- 84 200 SPDW-60630 Water 12/2/2024 H-3 184

-12 +/- 86 200 MB-120924 Water 12/9/2024 Co-57 1.08 0.04 +/- 0.66 10 MB-120924 Water 12/9/2024 Cs-134 1.06 0.22 +/- 0.61 10 MB-120924 Water 12/9/2024 Cs-137 1.39 0.65 +/- 0.68 10 MB-120924 Water 12/9/2024 Mn-54 0.93 0.07 +/- 0.55 10 MB-120924 Water 12/9/2024 Zn-65 2.28 0.33 +/- 1.12 10 MB-121224 Water 12/12/2024 Co-57 1.56

-1.64 +/- 1.28 10 MB-121224 Water 12/12/2024 Cs-134 1.85

-2.84 +/- 1.36 10 MB-121224 Water 12/12/2024 Cs-137 1.39

-0.10 +/- 1.44 10 MB-121224 Water 12/12/2024 Mn-54 2.56 1.81 +/- 1.30 10 MB-121224 Water 12/12/2024 Zn-65 3.05

-6.22 +/- 2.99 10 SPDW-60638 Water 12/12/2024 I-131 0.17

-0.19 +/- 0.08 1

SPDW-60641 Water 12/17/2024 H-3 182 3 +/- 85 200 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/g).

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

c I-131(G); iodine-131 as analyzed by gamma spectroscopy.

d Activity reported is a net activity result.

Concentrationa Laboratory results (4.66s)

Acceptance Activityd Criteria (4.66 s)

A-11 TABLE A-5. Intralaboratory "Duplicate" Samples Collection Lab Codeb Date Analysis Acceptance DW-60006 1/5/2024 Gr. Alpha 2.03 +/- 0.83 1.59 +/- 0.83 1.81 +/- 0.59 Pass DW-60006 1/5/2024 Gr. Beta 1.36 +/- 0.58 1.22 +/- 0.62 1.29 +/- 0.42 Pass W-41 1/5/2024 Ra-226 1.67 +/- 0.35 1.03 +/- 0.35 1.35 +/- 0.25 Pass W-41 1/5/2024 Ra-228 4.19 +/- 0.85 3.45 +/- 0.83 3.82 +/- 0.59 Pass W-62 1/8/2024 Ra-226 0.54 +/- 0.30 0.12 +/- 0.41 0.33 +/- 0.25 Pass DW-60018 1/16/2024 Gr. Alpha 1.75 +/- 0.74 0.98 +/- 0.80 1.37 +/- 0.54 Pass W-125,126 1/16/2024 Ra-226 0.37 +/- 0.18 0.66 +/- 0.27 0.52 +/- 0.16 Pass DW-60034,60035 1/29/2024 Gr. Alpha 2.10 +/- 0.74 1.41 +/- 0.79 1.76 +/- 0.54 Pass DW-60034,60035 1/29/2024 Gr. Beta 1.13 +/- 0.57 0.57 +/- 0.57 0.85 +/- 0.40 Pass DW-60049,60050 2/5/2024 Gr. Alpha 0.61 +/- 1.02 1.20 +/- 0.87 0.90 +/- 0.67 Pass DW-60049,60050 2/5/2024 Gr. Beta 0.99 +/- 0.64 1.19 +/- 0.07 1.09 +/- 0.32 Pass DW-60054,60055 2/8/2024 Gr. Beta 0.25 +/- 0.53 0.62 +/- 0.61 0.44 +/- 0.40 Pass DW-60071,60072 2/16/2024 Ra-226 2.33 +/- 0.21 1.73 +/- 0.17 2.03 +/- 0.14 Pass DW-60071,60072 2/16/2024 Ra-228 0.48 +/- 0.42 0.60 +/- 0.45 0.54 +/- 0.31 Pass DW-60107,60108 3/2/2024 Gr. Alpha 1.26 +/- 0.98 1.59 +/- 0.99 1.42 +/- 0.70 Pass DW-60107,60108 3/2/2024 Gr. Beta 0.63 +/- 0.57 0.14 +/- 0.59 0.38 +/- 0.41 Pass DW-60120,60121 3/8/2024 Gr. Beta 1.15 +/- 0.56 1.04 +/- 0.58 1.10 +/- 0.40 Pass LW-582,583 3/19/2024 Be-7 3.80 +/- 0.70 1.76 +/- 0.60 2.78 +/- 0.46 Pass SWT-708,709 3/26/2024 H-3 186 +/- 90 136 +/- 87 161 +/- 62 Pass SW-624,625 4/2/2024 H-3 1,174 +/- 133 1,302 +/- 138 1,238 +/- 96 Pass AP-865,866 4/3/2024 Be-7 0.040 +/- 0.007 0.053 +/- 0.008 0.047 +/- 0.005 Pass DW-60180,60181 4/5/2024 Ra-226 0.97 +/- 0.25 1.30 +/- 0.21 1.135 +/- 0.16 Pass DW-60180,60181 4/5/2024 Ra-228 0.85 +/- 0.48 1.34 +/- 0.54 1.095 +/- 0.36 Pass WW-949,950 4/16/2024 H-3 229 +/- 94 136 +/- 90 183 +/- 65 Pass S-886,887 4/18/2024 Pb-214 0.93 +/- 0.04 0.94 +/- 0.04 0.93 +/- 0.03 Pass S-886,887 4/18/2024 Ac-228 0.82 +/- 0.08 0.83 +/- 0.06 0.82 +/- 0.05 Pass DW-60206,60207 4/19/2024 Ra-226 2.35 +/- 0.27 3.49 +/- 0.25 2.92 +/- 0.18 Pass DW-60203,60204 4/19/2024 Gr. Alpha 2.12 +/- 0.64 1.74 +/- 0.73 1.93 +/- 0.49 Pass DW-60206,60207 4/19/2024 Ra-228 0.50 +/- 0.59

-0.21 +/- 0.53 0.15 +/- 0.40 Pass WW-1075,1076 4/30/2024 H-3 278 +/- 107 311 +/- 109 294 +/- 76 Pass SG-1017,1018 5/1/2024 Gr. Alpha 27.2 +/- 4.00 32.0 +/- 4.00 29.6 +/- 2.83 Pass SG-1017,1018 5/1/2024 Gr. Beta 25.7 +/- 1.80 24.5 +/- 1.90 25.1 +/- 1.31 Pass SG-1017,1018 5/1/2024 Pb-214 3.28 +/- 0.14 4.61 +/- 0.11 3.95 +/- 0.09 Pass SG-1017,1018 5/1/2024 Ac-228 4.86 +/- 0.18 4.98 +/- 0.37 4.92 +/- 0.21 Pass DW-60273,60274 5/21/2024 Ra-228 2.12 +/- 0.63 1.33 +/- 0.45 1.73 +/- 0.39 Pass XW-1138,1139 5/31/2024 H-3 732 +/- 124 688 +/- 122 710 +/- 87 Pass Concentrationa Averaged First Result Second Result Result

A-12 TABLE A-5. Intralaboratory "Duplicate" Samples Collection Lab Codeb Date Analysis Acceptance AP-060324A,B 6/3/2024 Gr. Beta 0.021 +/- 0.005 0.018 +/- 0.005 0.020 +/- 0.003 Pass AP-061224A,B 6/12/2024 Gr. Beta 0.009 +/- 0.003 0.011 +/- 0.003 0.010 +/- 0.002 Pass AP-061724A,B 6/17/2024 Gr. Beta 0.031 +/- 0.005 0.023 +/- 0.005 0.027 +/- 0.004 Pass AP-062524A,B 6/25/2024 Gr. Beta 0.033 +/- 0.003 0.034 +/- 0.003 0.034 +/- 0.002 Pass SG-1432,1433 6/24/2024 Ra-226 2.36 +/- 0.09 2.36 +/- 0.08 2.36 +/- 0.06 Pass SG-1432,1433 6/24/2024 Ra-228 1.67 +/- 0.14 1.69 +/- 0.15 1.68 +/- 0.10 Pass SG-1472,1473 7/1/2024 Gr. Alpha 36.0 +/- 4.5 36.8 +/- 4.5 36.4 +/- 3.2 Pass SG-1472,1473 7/1/2024 Gr. Beta 30.4 +/- 2.1 31.2 +/- 2.2 30.8 +/- 1.5 Pass SG-1472,1473 7/1/2024 Pb-214 2.64 +/- 0.11 3.11 +/- 0.09 2.88 +/- 0.07 Pass SG-1472,1473 7/1/2024 Ac-228 5.55 +/- 0.21 5.79 +/- 0.25 5.67 +/- 0.16 Pass SG-1474,1475 7/1/2024 Gr. Alpha 43.6 +/- 5.7 37.5 +/- 5.4 40.6 +/- 3.9 Pass SG-1474,1475 7/1/2024 Gr. Beta 40.6 +/- 2.8 34.2 +/- 2.7 37.4 +/- 1.9 Pass SG-1474,1475 7/1/2024 Pb-214 3.58 +/- 0.10 3.93 +/- 0.10 3.76 +/- 0.07 Pass SG-1474,1475 7/1/2024 Ac-228 4.21 +/- 0.15 4.13 +/- 0.16 4.17 +/- 0.11 Pass AP-070324A,B 7/3/2024 Gr. Beta 0.013 +/- 0.003 0.014 +/- 0.003 0.013 +/- 0.002 Pass W-1592,1593 7/9/2024 Gr. Alpha 1.23 +/- 0.67 0.36 +/- 0.54 0.80 +/- 0.43 Pass W-1592,1593 7/9/2024 Gr. Beta 1.45 +/- 0.60 0.60 +/- 0.53 1.03 +/- 0.40 Pass AP-071024A,B 7/10/2024 Gr. Beta 0.024 +/- 0.003 0.025 +/- 0.003 0.024 +/- 0.002 Pass S-1613,1614 7/11/2024 Pb-214 197 +/- 1 200 +/- 1 199 +/- 1 Pass S-1613,1614 7/11/2024 Ac-228 134 +/- 1 143 +/- 1 139 +/- 1 Pass AP-071724A,B 7/17/2024 Gr. Beta 0.038 +/- 0.001 0.032 +/- 0.003 0.035 +/- 0.001 Pass SG-1722,1723 7/22/2024 Gr. Beta 16.4 +/- 3.4 17.5 +/- 3.4 16.9 +/- 2.4 Pass SG-1722,1723 7/22/2024 Gr. Alpha 25.5 +/- 6.9 17.5 +/- 6.0 21.5 +/- 4.6 Pass SG-1722,1723 7/22/2024 K-40 6.99 +/- 1.04 5.75 +/- 0.86 6.37 +/- 0.67 Pass SG-1722,1723 7/22/2024 Pb-214 7.62 +/- 0.18 8.10 +/- 0.25 7.86 +/- 0.15 Pass SG-1722,1723 7/22/2024 Ac-228 4.72 +/- 0.34 4.76 +/- 0.36 4.74 +/- 0.24 Pass DW-60413,60414 7/22/2024 Gr. Alpha 1.71 +/- 0.79 0.93 +/- 0.81 1.32 +/- 0.56 Pass DW-60413,60414 7/22/2024 Gr. Beta 1.18 +/- 0.58 1.26 +/- 0.59 1.22 +/- 0.41 Pass AP-080524A,B 8/5/2024 Gr. Beta 0.025 +/- 0.003 0.025 +/- 0.003 0.025 +/- 0.002 Pass AP-081324A,B 8/13/2024 Gr. Beta 0.030 +/- 0.004 0.028 +/- 0.004 0.029 +/- 0.003 Pass AP-082124A,B 8/21/2024 Gr. Beta 0.034 +/- 0.003 0.030 +/- 0.003 0.032 +/- 0.002 Pass AP-082824A,B 8/28/2024 Gr. Beta 0.033 +/- 0.003 0.034 +/- 0.003 0.033 +/- 0.002 Pass AP-090924A,B 9/9/2024 Gr. Beta 0.025 +/- 0.005 0.026 +/- 0.005 0.026 +/- 0.003 Pass SO-2132,2133 9/9/2024 Be-7 0.39 +/- 0.11 0.53 +/- 0.22 0.46 +/- 0.12 Pass SO-2132,2133 9/9/2024 K-40 14.78 +/- 0.27 14.52 +/- 0.52 14.65 +/- 0.29 Pass SO-2132,2133 9/9/2024 Cs-137 0.10 +/- 0.01 0.08 +/- 0.02 0.09 +/- 0.01 Pass SO-2132,2133 9/9/2024 Tl-208 0.44 +/- 0.03 0.43 +/- 0.02 0.44 +/- 0.02 Pass SO-2132,2133 9/9/2024 Bi-212 1.40 +/- 0.34 1.25 +/- 0.15 1.32 +/- 0.19 Pass SO-2132,2133 9/9/2024 Bi-214 1.01 +/- 0.03 0.90 +/- 0.04 0.95 +/- 0.02 Pass SO-2132,2133 9/9/2024 Pb-212 1.29 +/- 0.02 1.18 +/- 0.03 1.24 +/- 0.02 Pass SO-2132,2133 9/9/2024 Pb-214 0.88 +/- 0.03 1.07 +/- 0.03 0.98 +/- 0.02 Pass Concentrationa Averaged First Result Second Result Result

A-13 TABLE A-5. Intralaboratory "Duplicate" Samples Collection Lab Codeb Date Analysis Acceptance SO-2132,2133 9/9/2024 Ra-226 2.38 +/- 0.36 2.31 +/- 0.16 2.34 +/- 0.20 Pass SO-2132,2133 9/9/2024 Ac-228 1.33 +/- 0.10 1.33 +/- 0.06 1.33 +/- 0.06 Pass SS-2206,2207 9/17/2024 Be-7 0.29 +/- 0.06 0.23 +/- 0.10 0.26 +/- 0.06 Pass SS-2206,2207 9/17/2024 K-40 6.54 +/- 0.29 6.19 +/- 0.20 6.37 +/- 0.18 Pass SS-2206,2207 9/17/2024 Tl-208 0.20 +/- 0.02 0.22 +/- 0.02 0.21 +/- 0.01 Pass SS-2206,2207 9/17/2024 Bi-212 0.65 +/- 0.14 0.69 +/- 0.19 0.67 +/- 0.12 Pass SS-2206,2207 9/17/2024 Bi-214 0.68 +/- 0.02 0.61 +/- 0.02 0.65 +/- 0.02 Pass SS-2206,2207 9/17/2024 Pb-212 0.51 +/- 0.02 0.59 +/- 0.02 0.55 +/- 0.01 Pass SS-2206,2207 9/17/2024 Pb-214 0.73 +/- 0.03 0.63 +/- 0.02 0.68 +/- 0.02 Pass SS-2206,2207 9/17/2024 Ra-226 1.12 +/- 0.12 1.25 +/- 0.19 1.18 +/- 0.11 Pass SS-2206,2207 9/17/2024 Ac-228 0.66 +/- 0.05 0.65 +/- 0.06 0.66 +/- 0.04 Pass VE-2111,2112 9/10/2024 Be-7 0.56 +/- 0.17 0.59 +/- 0.18 0.58 +/- 0.12 Pass VE-2111,2112 9/10/2024 K-40 4.62 +/- 0.40 5.21 +/- 0.41 4.91 +/- 0.29 Pass AP-091624A,B 9/16/2024 Gr. Beta 0.044 +/- 0.004 0.043 +/- 0.004 0.044 +/- 0.002 Pass SS-2206,2207 9/17/2024 Be-7 0.29 +/- 0.06 0.23 +/- 0.10 0.26 +/- 0.06 Pass SS-2206,2207 9/17/2024 K-40 6.54 +/- 0.29 6.19 +/- 0.20 6.37 +/- 0.18 Pass SS-2206,2207 9/17/2024 Tl-208 0.20 +/- 0.02 0.22 +/- 0.02 0.21 +/- 0.01 Pass SS-2206,2207 9/17/2024 Bi-212 0.65 +/- 0.14 0.69 +/- 0.19 0.67 +/- 0.12 Pass SS-2206,2207 9/17/2024 Bi-214 0.68 +/- 0.02 0.61 +/- 0.02 0.65 +/- 0.02 Pass SS-2206,2207 9/17/2024 Pb-212 0.51 +/- 0.02 0.59 +/- 0.02 0.55 +/- 0.01 Pass SS-2206,2207 9/17/2024 Pb-214 0.73 +/- 0.03 0.63 +/- 0.02 0.68 +/- 0.02 Pass SS-2206,2207 9/17/2024 Ra-226 1.12 +/- 0.12 1.25 +/- 0.19 1.18 +/- 0.11 Pass SS-2206,2207 9/17/2024 Ac-228 0.66 +/- 0.05 0.65 +/- 0.06 0.66 +/- 0.04 Pass VE-2111,2112 9/10/2024 Be-7 0.56 +/- 0.17 0.59 +/- 0.18 0.58 +/- 0.12 Pass VE-2111,2112 9/10/2024 K-40 4.62 +/- 0.40 5.21 +/- 0.41 4.91 +/- 0.29 Pass AP-092524A,B 9/25/2024 Gr. Beta 0.036 +/- 0.003 0.033 +/- 0.003 0.035 +/- 0.002 Pass AP-2773,2774 9/30/2024 Be-7 0.067 +/- 0.008 0.075 +/- 0.066 0.071 +/- 0.033 Pass SG-2353,2354 10/3/2024 K-40 3.68 +/- 0.34 2.79 +/- 0.59 3.24 +/- 0.34 Pass SG-2353,2354 10/3/2024 Tl-208 0.13 +/- 0.01 0.14 +/- 0.03 0.13 +/- 0.01 Pass SG-2353,2354 10/3/2024 Pb-212 0.36 +/- 0.02 0.27 +/- 0.03 0.32 +/- 0.02 Pass SG-2353,2354 10/3/2024 Pb-214 1.64 +/- 0.05 1.21 +/- 0.08 1.43 +/- 0.05 Pass SG-2353,2354 10/3/2024 Bi-214 1.56 +/- 0.05 1.32 +/- 0.10 1.44 +/- 0.06 Pass SG-2353,2354 10/3/2024 Ac-228 2.62 +/- 0.09 2.20 +/- 0.19 2.41 +/- 0.11 Pass SG-2362,2363 10/4/2024 Gr. Alpha 31.50 +/- 3.70 23.00 +/- 3.30 27.25 +/- 2.48 Pass SG-2362,2363 10/4/2024 Gr. Beta 24.70 +/- 1.70 19.60 +/- 1.60 22.15 +/- 1.17 Pass SG-2362,2363 10/4/2024 Ra-226 4.08 +/- 0.23 4.03 +/- 0.18 4.06 +/- 0.15 Pass SG-2362,2363 10/4/2024 Ra-228 5.90 +/- 0.41 5.85 +/- 0.34 5.88 +/- 0.27 Pass S-2541,2542 10/11/2024 K-40 14.20 +/- 0.44 14.82 +/- 0.44 14.51 +/- 0.31 Pass S-2541,2542 10/11/2024 Cs-137 0.08 +/- 0.01 0.10 +/- 0.01 0.09 +/- 0.01 Pass S-2541,2542 10/11/2024 Tl-208 0.26 +/- 0.02 0.27 +/- 0.02 0.27 +/- 0.01 Pass S-2541,2542 10/11/2024 Pb-212 0.75 +/- 0.03 0.54 +/- 0.03 0.64 +/- 0.02 Pass Concentrationa Averaged First Result Second Result Result

A-14 TABLE A-5. Intralaboratory "Duplicate" Samples Collection Lab Codeb Date Analysis Acceptance S-2541,2542 10/11/2024 Bi-212 1.17 +/- 0.29 0.83 +/- 0.16 1.00 +/- 0.16 Pass S-2541,2542 10/11/2024 Pb-214 1.28 +/- 0.05 1.07 +/- 0.05 1.17 +/- 0.04 Pass S-2541,2542 10/11/2024 Ac-228 0.88 +/- 0.08 0.85 +/- 0.08 0.86 +/- 0.06 Pass S-2752,2753 10/24/2024 K-40 15.24 +/- 0.33 15.54 +/- 0.31 15.39 +/- 0.22 Pass S-2752,2753 10/24/2024 Cs-137 0.09 +/- 0.09 0.10 +/- 0.09 0.09 +/- 0.06 Pass S-2752,2753 10/24/2024 Tl-208 0.33 +/- 0.01 0.34 +/- 0.01 0.34 +/- 0.01 Pass S-2752,2753 10/24/2024 Pb-212 0.93 +/- 0.02 0.98 +/- 0.02 0.96 +/- 0.01 Pass S-2752,2753 10/24/2024 Bi-212 1.15 +/- 0.12 1.13 +/- 0.12 1.14 +/- 0.08 Pass S-2752,2753 10/24/2024 Pb-214 1.33 +/- 0.03 1.19 +/- 0.03 1.26 +/- 0.02 Pass S-2752,2753 10/24/2024 Bi-214 1.37 +/- 0.04 1.19 +/- 0.03 1.28 +/- 0.03 Pass S-2752,2753 10/24/2024 Ra-226 2.61 +/- 0.36 2.28 +/- 0.15 2.45 +/- 0.20 Pass S-2752,2753 10/24/2024 Ac-228 1.10 +/- 0.07 1.10 +/- 0.04 1.10 +/- 0.04 Pass F-2899,2900 11/6/2024 K-40 2.38 +/- 0.35 3.06 +/- 0.13 2.72 +/- 0.18 Pass SW-2815,2816 11/5/2024 H-3 265 +/- 100 214 +/- 97 240 +/- 70 Pass SW-3046,3047 12/4/2024 H-3 109 +/- 91 178 +/- 94 144 +/- 65 Pass W-3067,3068 12/3/2024 H-3 206 +/- 96 329 +/- 102 268 +/- 70 Pass AP-3335,3336 12/30/2024 Be-7 0.034 +/- 0.005 0.050 +/- 0.005 0.042 +/- 0.003 Pass Note: Duplicate analyses are performed on every twentieth sample received. 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 or pCi/m3), food products, vegetation, soil and sediment (pCi/g).

b AP (Air Particulate), AV (Aquatic Vegetation), BS (Bottom Sediment), CF (Cattle Feed), CH (Charcoal Canister),

DW (Drinking Water), E (Egg), F (Fish), G (Grass), LW (Lake Water), MI (Milk), P (Precipitation), PM (Powdered Milk),

S (Solid), SG (Sludge), SO (Soil), SS (Shoreline Sediment), SW (Surface Water), SWT (Surface Water Treated),

SWU (Surface Water Untreated), U (Urine), VE (Vegetation), W (Water), WW (Well Water).

Concentrationa Averaged First Result Second Result Result

A-15 TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Reference Known Lab Code b Date Analysis Activity Acceptance MADW-429 2/1/2024 Gross Alpha 0.641 +/- 0.048 1.01 0.30 - 1.72 Pass MADW-429 2/1/2024 Gross Beta 4.71 +/- 0.08 5.6 2.79 - 8.36 Pass MADW-457 2/1/2024 Cs-134 0.09 +/- 0.19 0

NA c Pass MADW-457 2/1/2024 Cs-137 11.1 +/- 0.4 9.7 6.8 - 12.6 Pass MADW-457 2/1/2024 Co-57 26.4 +/- 0.4 25.4 17.8 - 33.0 Pass MADW-457 2/1/2024 Co-60 11.2 +/- 0.3 10.27 7.19 - 13.35 Pass MADW-457 2/1/2024 Mn-54 8.23 +/- 0.39 7.36 5.15 - 9.57 Pass MADW-457 2/1/2024 Zn-65 0.10 +/- 0.30 0

NA c Pass MADW-457 2/1/2024 K-40 3.16 +/- 2.49 0

NA c Pass MADW-457 2/1/2024 Ra-226 0.46 +/- 0.07 0.310 0.217 - 0.403 Fail d MAAP-459 2/1/2024 Cs-134 0.03 +/- 0.03 0

NA c Pass MAAP-459 2/1/2024 Cs-137 1.30 +/- 0.07 1.48 1.04 - 1.92 Pass MAAP-459 2/1/2024 Co-57 0.58 +/- 0.03 0.819 0.573 - 1.065 Pass MAAP-459 2/1/2024 Co-60 1.30 +/- 0.06 1.64 1.15 - 2.13 Pass MAAP-459 2/1/2024 Mn-54 0.51 +/- 0.05 0.555 0.389 - 0.722 Pass MAAP-459 2/1/2024 Zn-65 0.27 +/- 0.07 0.332 NA e Pass MASO-461 2/1/2024 Cs-134 345 +/- 2 404 283 - 525 Pass MASO-461 2/1/2024 Cs-137 1539 +/- 7 1550 1085 - 2015 Pass MASO-461 2/1/2024 Co-57 355 +/- 4 401 281 - 521 Pass MASO-461 2/1/2024 Co-60 619 +/- 4 660 462 - 858 Pass MASO-461 2/1/2024 Mn-54 332 +/- 13 332 232 - 432 Pass MASO-461 2/1/2024 Zn-65 543 +/- 9 703 492 - 914 Pass MASO-461 2/1/2024 K-40 510 +/- 20 485 340 - 631 Pass MAVE-464 2/1/2024 Cs-134 2.97 +/- 0.08 3.67 2.57 - 4.77 Pass MAVE-464 2/1/2024 Cs-137 2.36 +/- 0.15 2.57 1.80 - 3.34 Pass MAVE-464 2/1/2024 Co-57 1.78 +/- 0.09 2.53 1.77 - 3.29 Pass MAVE-464 2/1/2024 Co-60 2.61 +/- 0.13 2.96 2.07 - 3.85 Pass MAVE-464 2/1/2024 Mn-54 0.03 +/- 0.07 0

NA c Pass MAVE-464 2/1/2024 Zn-65 6.41 +/- 0.30 8.02 5.61 - 10.43 Pass Concentrationa Acceptance Laboratory result Range c

A-16 TABLE A-6. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Reference Known Lab Code b Date Analysis Activity Acceptance MADW-2185 8/1/2024 Gross Alpha 0.88 +/- 0.01 1.29 0.39 - 2.19 Pass MADW-2185 8/1/2024 Gross Beta 4.35 +/- 0.01 5.09 2.55 - 7.64 Pass MASO-2187 8/1/2024 Cs-134 330 +/- 4 417 292 - 542 Pass MASO-2187 8/1/2024 Cs-137 1650 +/- 11 1650 1155 - 2145 Pass MASO-2187 8/1/2024 Co-57 311 +/- 5 330 231 - 429 Pass MASO-2187 8/1/2024 Co-60 669 +/- 7 700 490 - 910 Pass MASO-2187 8/1/2024 Mn-54 116 +/- 5 113 79 - 147 Pass MASO-2187 8/1/2024 Zn-65 330 +/- 8 415 291 - 540 Pass MASO-2187 8/1/2024 K-40 531 +/- 31 525 368 - 683 Pass MADW-2183 8/1/2024 Cs-134 19.9 +/- 0.3 22.3 15.6 - 29.0 Pass MADW-2183 8/1/2024 Cs-137 0.99 +/- 0.29 0

NA c, e Fail MADW-2183 8/1/2024 Co-57 25.3 +/- 0.4 26.4 18.5 - 34.3 Pass MADW-2183 8/1/2024 Co-60 14.7 +/- 0.4 15.0 10.5 - 19.5 Pass MADW-2183 8/1/2024 Mn-54 0.12 +/- 0.16 0

NA c Pass MADW-2183 8/1/2024 Zn-65 20.6 +/- 1.0 22.8 16.00 - 29.60 Pass MADW-2183 8/1/2024 K-40 8.92 +/- 1.23 0

NA c, e Fail MAAP-2191 8/1/2024 Cs-134 0.254 +/- 0.030 0.334 0.234 - 0.434 Pass MAAP-2191 8/1/2024 Cs-137 0.260 +/- 0.046 0.269 0.188 - 0.350 Pass MAAP-2191 8/1/2024 Co-57

-0.0003 +/- 0.0126 0

NA c Pass MAAP-2191 8/1/2024 Co-60 0.333 +/- 0.045 0.361 0.253 - 0.469 Pass MAAP-2191 8/1/2024 Mn-54

-0.003 +/- 0.022 0

NA c Pass MAAP-2191 8/1/2024 Zn-65

-0.002 +/- 0.054 0

NA c Pass MAVE-2189 8/1/2024 Cs-134 2.10 +/- 0.07 2.89 2.02 - 3.76 Pass MAVE-2189 8/1/2024 Cs-137 1.53 +/- 0.11 1.91 1.34 - 2.48 Pass MAVE-2189 8/1/2024 Co-57 0.003 +/- 0.023 0

NA c Pass MAVE-2189 8/1/2024 Co-60 1.54 +/- 0.08 2.01 1.41 - 2.61 Pass MAVE-2189 8/1/2024 Mn-54 2.89 +/- 0.15 3.53 2.47 - 4.59 Pass MAVE-2189 8/1/2024 Zn-65 7.14 +/- 0.29 9.13 6.39 - 11.87 Pass a Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

b Laboratory codes as follows: MAW (water), MADW (water), MAAP (air filter), MASO (soil) and MAVE (vegetation).

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

d No conclusive reason for the failure could be determined. The uncertainty overlapped the known activity (reference value).

e False positive detections could have occurred due to a combination of an inadequate background subtraction for this sample geometry compounded by a very long analysis time.

Concentrationa Acceptance Laboratory result Range c

A-17 TABLE A-7. Interlaboratory Comparison Crosscheck Program, Environmental Resource Associates (ERA)a.

MRAD-40 Study Lab Code b Date Analysis ERA Value c Acceptance ERAP-574 3/18/2024 Cs-134 291 +/- 4 273 177 - 335 Pass ERAP-574 3/18/2024 Cs-137 131 +/- 6 106 87 - 139 Pass ERAP-574 3/18/2024 Co-60 1240 +/- 8 1120 952 - 1420 Pass ERAP-574 3/18/2024 Mn-54

< 3.1

< 35.0 0.00 - 35.0 Pass ERAP-574 3/18/2024 Zn-65 102 +/- 9 77.2 63.3 - 118 Pass ERAP-574 3/18/2024 Sr-90 173 +/- 5 158 99.9 - 215 Pass ERAP-600 3/18/2024 Gross Alpha 110 +/- 3 95.9 50.1 - 158 Pass ERAP-600 3/18/2024 Gross Beta 31.7 +/- 1.6 22.2 13.5 - 33.5 Pass a Results obtained by Microbac Laboratories - Northbrook as a participant in the crosscheck program for proficiency testing administered by Environmental Resource Associates, serving as a replacement for studies conducted previously by the Environmental Measurements Laboratory Quality Assessment Program (EML).

b Laboratory code ERAP (air filter). Results are reported in units of (pCi/Filter).

c The ERA Assigned values for the air filter standards are equal to 100% of the parameter present in the standard as determined by the gravimetric and/or volumetric measurements made during standard preparation as applicable.

d The acceptance limits are established per the guidelines contained in the Department of Energy (DOE) report EML-564, Analysis of Environmental Measurements Laboratory (EML) Quality Assessment Program (QAP)

Data Determination of Operational Criteria and Control Limits for Performance Evaluation Purposes or ERA's SOP for the generation of Performance Acceptance Limits.

Concentration a Laboratory Acceptance Result Limits d

Page B-1 Appendix B Summary Tables in the format of NRC Radiological Assessment Branch Technical Position Revision 1, November 1979

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 2024 Medium of Pathway Analysis and ODCM Lower All Indicator Locations Indicator Location with Highest Annual Mean Control Locations Number of Sampled (Unit of Measurement)

Total Number of Analysis Performed Limit of Detection (LLD)

• • Mean (f)

• • Range Name Distance and Direction

• • Mean (f)

• • Range

• • Mean (f)

• • Range Nonroutine Reported Measurements **

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

Page B-2 Air Particulate Station 53 (pCi/m3)

Gross Beta (311) 0.01 0.026 (260/260)

(0.010 - 0.058) 32,37,49 3.1 miles WNW 2.0 miles NNW 0.8 miles NNE 0.025, (52/52)

(0.011 - 0.056) 0.025 (52/52)

(0.011 - 0.056) 0 Air Radioiodine (pCi/m3)

Gamma (24)

Be-7 0.075 (20/20)

(0.068 - 0.112) 37 2.0 miles NNW 0.078 (4/4)

(0.061 - 0.091) 0.078 (4/4)

(0.061 - 0.091) 0 Station 53 I-131 (313) 0.07

- (0/260)

N/A N/A

- (0/53) 0 Direct Radiation Dosimeters Stations 39 & 53 (mR per std.

90-day Qtr.)

Gamma Dose (175) 18.6 (159/159)

(11.2 - 23.8) 13 1.6 miles SE 21.0 (4/4)

(19.6 - 23.2) 18.5 (8/8)

(17.1 - 19.9) 0 Surface Water JRR (pCi/l)

Gamma (24)

- (0/12)

N/A N/A

- (0/12) 0 Tritium (24) 30,000 12,685 (12/12)

(10,663 -

15,030)

SP 3.2 miles SSE 12,685 (12/12)

(10,663 -

15,030)

-(0/12) 0 Fe-55 (8)

- (0/4)

N/A N/A

- (0/4) 0 Ground Water B-12 (pCi/l)

I-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) 20,000

- (0/28)

N/A N/A

- (0/4) 0

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 2024 Medium of Pathway Analysis and ODCM Lower All Indicator Locations Indicator Location with Highest Annual Mean Control Locations Number of Sampled (Unit of Measurement)

Total Number of Analysis Performed Limit of Detection (LLD)

• • Mean (f)

• • Range Name Distance and Direction

• • Mean (f)

• • Range

• • Mean (f)

• • Range Nonroutine Reported Measurements **

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

Page B-3 Drinking BW-15 Water I-131 (24) 1

- (0/12)

N/A N/A

- (0/12) 0 (pCi/l)

Gross Beta (24) 4 2.5 (12/12)

(1.3 - 4.0)

IO-DW 26.1 miles SSE 2.5 (12/12)

(1.3 - 4.0) 2.2 (12/12)

(1.5 - 4.2) 0 Gamma (24)

- (0/12)

N/A N/A

- (0/12) 0 Tritium (8) 2,000 (0/4)

N/A

- (0/4)

- (0/4) 0 Shoreline Gamma (6)

JRR Sediment (pCi/kg dry)

K-40 8,587 (4/4)

(4,968 - 12,960)

EEA 3.0 miles NNW 12,960 (1/1)

(12,960 -12,960) 9.506 (2/2)

(8.056 - 10.955) 0 Cs-137 (0-7)

N/A N/A (0-2) 0 Fish - Flesh Gamma (20)

JRR (pCi/kg wet)

K-40 3,300 (10/10)

(2,877 - 3,811)

CCL 0.6 miles E to NNW 3,300 (10/10)

(2,877 - 3,811) 3,406(10/10)

(3,068-3,613) 0 Tritium (20) 7,384 (10/10)

(5,377 - 9,886)

CCL 0.6 miles E to NNW 7,384 (10/10)

(5,377 - 9,886)

- (0/11) 0

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 2024 Medium of Pathway Analysis and ODCM Lower All Indicator Locations Indicator Location with Highest Annual Mean Control Locations Number of Sampled (Unit of Measurement)

Total Number of Analysis Performed Limit of Detection (LLD)

• • Mean (f)

• • Range Name Distance and Direction

• • Mean (f)

• • Range

• • Mean (f)

• • Range Nonroutine Reported Measurements **

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

Page B-4 Food and Gamma (20)

D-2 Garden (pCi/kg wet)

Be-7 1,164 (15/15)

(582 - 1,875)

H-2 3.0 miles SSE 1,480(1/1)

(1,480 - 1,480) 1,075 (5/5)

(581 - 1,465) 0 K-40 5,528 (15/15)

(4,227 - 6,591)

H-2 3.0 miles SSE 4,942 (1/1)

(4,942 - 4,942) 5,716 (5/5)

(4,687 - 7,113) 0 Crops Gamma (4)

NR-U1 (pCi/kg wet)

K-40 7,613(2/2)

(1,876-13,351)

NR-D1 8.9 miles S 13,351 (1-1)

(13,351-13,351) 8,792 (2-2)

(3,147-14,437) 0 Bottom Sediment Gamma (6)

JRR (pCi/kg dry)

K-40 11,041 (4/4)

(8,395-18,479)

DC 0.9 miles WNW 12,785 (2/2)

(11,997-13,574) 16,911 (2/2)

(15,343 - 18,479) 0 Cs-137 41 (4/4)

(17 - 56)

DC 0.9 miles WNW 52.85 (2/2)

(49-56.7) 77.5- (2/2)

(70.6-84.4) 0 Fe-55 (2) 13,397- (2/2)

(5,380-21,403)

DC 0.9 miles WNW 13,397- (2/2)

(5,380-21,403)

No Control 0

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 2024 Medium of Pathway Analysis and ODCM Lower All Indicator Locations Indicator Location with Highest Annual Mean Control Locations Number of Sampled (Unit of Measurement)

Total Number of Analysis Performed Limit of Detection (LLD)

• • Mean (f)

• • Range Name Distance and Direction

• • Mean (f)

• • Range

• • Mean (f)

• • Range Nonroutine Reported Measurements **

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

Page B-5 Aquatic Gamma (3)

No Control Vegetation (pCi/kg wet)

Be-7 429 (3/3)

(241 - 687)

SC 0.8 miles NNW 687 (1/1)

(687 - 687) 0 K-40 2,320 (3/3)

(2,2952-2,378)

SC 0.8 miles NNW 2,378 (1/1)

(2,378 - 2,378) 0 Cs-137

- (0/4)

N/A N/A 0

Terrestrial Gamma (2)

No Control Vegetation (pCi/kg wet)

Be-7 1,645 (2/2)

(1,345 - 1,944)

MUDS 1.5 miles WNW 1,944 (1/1)

(1,944 - 1,944) 0 K-40 7,332 (2/2)

(6,132 - 8,531)

EEA 3.0 miles NNW 8,531 (1/1)

(8,531-8,531) 0 Soil Gamma (3)

No Control (pCi/kg dry)

K-40 10,977 (3/3)

(7,083-14,522)

EEA 3.0 miles NNW 14,522 (1/1)

(14,522-14.522) 0 Cs-137 169 (1/1)

(169-169)

MUDS 1.5 miles WNW 169 (1/1)

(169-169) 0 Meat Gamma (2)

No Control (pCi/kg wet)

Deer/Turkey K-40 2,632 (2/2)

(2,565 -2,700)

R1.4 (Turkey) 1.8 miles NNW 2,700(1/1)

(2,700 - 2,700) 0

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 2024 Medium of Pathway Analysis and ODCM Lower All Indicator Locations Indicator Location with Highest Annual Mean Control Locations Number of Sampled (Unit of Measurement)

Total Number of Analysis Performed Limit of Detection (LLD)

• • Mean (f)

• • Range Name Distance and Direction

• • Mean (f)

• • Range

• • Mean (f)

• • Range Nonroutine Reported Measurements **

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

Page B-6 Tritium 833 (2/2)

(341-1,324)

R1.8 (Deer) 1.8 miles NNW 1,324 (1/1)

(1,324 - 1,324)

No Control 0

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station APPENDIX C INDIVIDUAL SAMPLE RESULTS

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 002 Air Particulate Filters and Radioiodine Canisters 27-Dec-23 02-Jan-24 264 0.029

+/-

0.005 0.012 02-Jan-24 08-Jan-24 248 0.034

+/-

0.006 0.020 08-Jan-24 15-Jan-24 304 0.024

+/-

0.004 0.013 08-Jan-24 15-Jan-24 304 0.026

+/-

0.005 Duplicate 15-Jan-24 22-Jan-24 299 0.027

+/-

0.005 0.012 22-Jan-24 29-Jan-24 298 0.017

+/-

0.004 0.010 29-Jan-24 05-Feb-24 297 0.021

+/-

0.005 0.011 05-Feb-24 12-Feb-24 291 0.021

+/-

0.004 0.016 12-Feb-24 19-Feb-24 302 0.021

+/-

0.004 0.013 19-Feb-24 26-Feb-24 293 0.030

+/-

0.005 0.007 26-Feb-24 04-Mar-24 302 0.024

+/-

0.004 0.006 04-Mar-24 11-Mar-24 305 0.024

+/-

0.005 0.011 11-Mar-24 18-Mar-24 294 0.026

+/-

0.005 0.009 18-Mar-24 25-Mar-24 291 0.023

+/-

0.005 0.010 18-Mar-24 25-Mar-24 291 0.025

+/-

0.005 Duplicate 25-Mar-24 01-Apr-24 304 0.026

+/-

0.004 0.011 01-Apr-24 08-Apr-24 305 0.014

+/-

0.004 0.012 08-Apr-24 15-Apr-24 295 0.014

+/-

0.004 0.006 15-Apr-24 22-Apr-24 306 0.018

+/-

0.004 0.025 22-Apr-24 30-Apr-24 330 0.020

+/-

0.004 0.014 30-Apr-24 06-May-24 263 0.010

+/-

0.005 0.019 30-Apr-24 06-May-24 263 0.009

+/-

0.004 Duplicate 06-May-24 13-May-24 295 0.014

+/-

0.004 0.018 13-May-24 20-May-24 300 0.019

+/-

0.004 0.013 20-May-24 28-May-24 339 0.018

+/-

0.004 0.008 28-May-24 03-Jun-24 255 0.016

+/-

0.005 0.023 03-Jun-24 11-Jun-24 338 0.015

+/-

0.004 0.008 11-Jun-24 17-Jun-24 253 0.027

+/-

0.005 0.010 17-Jun-24 24-Jun-24 298 0.018

+/-

0.004 0.011 24-Jun-24 01-Jul-24 298 0.015

+/-

0.004 0.015 01-Jul-24 08-Jul-24 291 0.018

+/-

0.004 0.014 08-Jul-24 16-Jul-24 329 0.025

+/-

0.004 0.013 16-Jul-24 22-Jul-24 264 0.022

+/-

0.005 0.009 22-Jul-24 29-Jul-24 294 0.036

+/-

0.005 0.010 29-Jul-24 05-Aug-24 300 0.025

+/-

0.004 0.018 05-Aug-24 12-Aug-24 300 0.020

+/-

0.004 0.017 12-Aug-24 19-Aug-24 298 0.026

+/-

0.004 0.008 19-Aug-24 26-Aug-24 290 0.035

+/-

0.005 0.010 26-Aug-24 03-Sep-24 326 0.028

+/-

0.004 0.012 03-Sep-24 09-Sep-24 245 0.025

+/-

0.005 0.012 03-Sep-24 09-Sep-24 245 0.026

+/-

0.005 Duplicate 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 1

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 002 Air Particulate Filters and Radioiodine Canisters 09-Sep-24 16-Sep-24 295 0.024

+/-

0.005 0.009 09-Sep-24 16-Sep-24 295 0.024

+/-

0.005 Duplicate 16-Sep-24 23-Sep-24 298 0.018

+/-

0.004 0.008 16-Sep-24 23-Sep-24 298 0.019

+/-

0.004 Duplicate 23-Sep-24 30-Sep-24 291 0.029

+/-

0.005 0.014 30-Sep-24 07-Oct-24 303 0.030

+/-

0.005 0.010 30-Sep-24 07-Oct-24 303 0.033

+/-

0.005 Duplicate 07-Oct-24 14-Oct-24 291 0.040

+/-

0.005 0.013 14-Oct-24 21-Oct-24 295 0.022

+/-

0.005 0.010 21-Oct-24 28-Oct-24 298 0.034

+/-

0.005 0.008 21-Oct-24 28-Oct-24 298 0.030

+/-

0.005 Duplicate 28-Oct-24 04-Nov-24 303 0.022

+/-

0.004 0.017 04-Nov-24 12-Nov-24 353 0.019

+/-

0.004 0.009 04-Nov-24 12-Nov-24 353 0.019

+/-

0.004 Duplicate 12-Nov-24 19-Nov-24 288 0.033

+/-

0.005 0.013 12-Nov-24 19-Nov-24 288 0.036

+/-

0.005 Duplicate 19-Nov-24 25-Nov-24 263 0.020

+/-

0.005 0.014 19-Nov-24 25-Nov-24 253 0.021

+/-

0.005 Duplicate 25-Nov-24 02-Dec-24 304 0.041

+/-

0.005 0.016 02-Dec-24 09-Dec-24 294 0.038

+/-

0.005 0.027 09-Dec-24 16-Dec-24 310 0.023

+/-

0.005 0.009 16-Dec-24 23-Dec-24 302 0.041

+/-

0.005 0.014 23-Dec-24 30-Dec-24 331 0.052

+/-

0.005 0.024 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 2

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 018 Air Particulate Filters and Radioiodine Canisters 27-Dec-23 02-Jan-24 262 0.027

+/-

0.005 0.012 02-Jan-24 08-Jan-24 253 0.032

+/-

0.006 0.019 08-Jan-24 15-Jan-24 307 0.024

+/-

0.004 0.013 15-Jan-24 22-Jan-24 298 0.031

+/-

0.005 0.012 22-Jan-24 29-Jan-24 296 0.017

+/-

0.004 0.010 29-Jan-24 05-Feb-24 294 0.030

+/-

0.005 0.011 29-Jan-24 05-Feb-24 294 0.026

+/-

0.005 Duplicate 05-Feb-24 12-Feb-24 294 0.020

+/-

0.004 0.016 12-Feb-24 19-Feb-24 304 0.019

+/-

0.004 0.012 12-Feb-24 19-Feb-24 304 0.025

+/-

0.005 Duplicate 19-Feb-24 26-Feb-24 290 0.027

+/-

0.005 0.007 26-Feb-24 04-Mar-24 302 0.027

+/-

0.005 0.006 04-Mar-24 11-Mar-24 304 0.023

+/-

0.005 0.011 11-Mar-24 18-Mar-24 292 0.024

+/-

0.005 0.009 18-Mar-24 25-Mar-24 290 0.023

+/-

0.005 0.010 25-Mar-24 01-Apr-24 302 0.027

+/-

0.005 0.011 01-Apr-24 08-Apr-24 306 0.012

+/-

0.004 0.012 08-Apr-24 15-Apr-24 296 0.022

+/-

0.004 0.006 15-Apr-24 22-Apr-24 298 0.021

+/-

0.004 0.026 22-Apr-24 30-Apr-24 333 0.020

+/-

0.004 0.014 22-Apr-24 30-Apr-24 333 0.020

+/-

0.004 Duplicate 30-Apr-24 06-May-24 258 0.012

+/-

0.005 0.019 06-May-24 13-May-24 288 0.017

+/-

0.004 0.018 13-May-24 20-May-24 294 0.021

+/-

0.004 0.014 20-May-24 28-May-24 342 0.016

+/-

0.004 0.008 28-May-24 03-Jun-24 258 0.018

+/-

0.005 0.023 03-Jun-24 11-Jun-24 320 0.012

+/-

0.004 0.008 11-Jun-24 17-Jun-24 248 0.028

+/-

0.005 0.010 17-Jun-24 24-Jun-24 289 0.020

+/-

0.004 0.011 24-Jun-24 01-Jul-24 295 0.015

+/-

0.004 0.015 24-Jun-24 01-Jul-24 295 0.014

+/-

0.004 Duplicate 01-Jul-24 08-Jul-24 292 0.023

+/-

0.004 0.013 08-Jul-24 16-Jul-24 327 0.030

+/-

0.004 0.013 16-Jul-24 22-Jul-24 264 0.018

+/-

0.005 0.009 16-Jul-24 22-Jul-24 264 0.020

+/-

0.005 Duplicate 22-Jul-24 29-Jul-24 300 0.036

+/-

0.005 0.010 29-Jul-24 05-Aug-24 296 0.019

+/-

0.004 0.018 05-Aug-24 12-Aug-24 304 0.021

+/-

0.004 0.017 12-Aug-24 19-Aug-24 293 0.019

+/-

0.004 0.008 19-Aug-24 26-Aug-24 291 0.034

+/-

0.005 0.010 26-Aug-24 03-Sep-24 335 0.035

+/-

0.004 0.012 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 3

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 018 Air Particulate Filters and Radioiodine Canisters 03-Sep-24 09-Sep-24 253 0.027

+/-

0.005 0.012 09-Sep-24 16-Sep-24 290 0.024

+/-

0.005 0.010 16-Sep-24 23-Sep-24 297 0.018

+/-

0.004 0.008 23-Sep-24 30-Sep-24 296 0.034

+/-

0.005 0.014 30-Sep-24 07-Oct-24 304 0.039

+/-

0.005 0.010 07-Oct-24 14-Oct-24 298 0.040

+/-

0.005 0.013 14-Oct-24 21-Oct-24 298 0.023

+/-

0.005 0.010 21-Oct-24 28-Oct-24 303 0.033

+/-

0.005 0.008 28-Oct-24 04-Nov-24 296 0.021

+/-

0.005 0.018 04-Nov-24 12-Nov-24 356 0.021

+/-

0.004 0.009 12-Nov-24 19-Nov-24 294 0.029

+/-

0.005 0.012 19-Nov-24 25-Nov-24 264 0.020

+/-

0.005 0.013 25-Nov-24 02-Dec-24 306 0.045

+/-

0.005 0.015 02-Dec-24 09-Dec-24 296 0.039

+/-

0.005 0.026 09-Dec-24 16-Dec-24 310 0.024

+/-

0.005 0.009 16-Dec-24 23-Dec-24 306 0.037

+/-

0.005 0.014 23-Dec-24 30-Dec-24 290 0.058

+/-

0.006 0.028 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 4

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 032 Air Particulate Filters and Radioiodine Canisters 27-Dec-23 02-Jan-24 266 0.028

+/-

0.005 0.012 27-Dec-23 02-Jan-24 266 0.022

+/-

0.005 Duplicate 02-Jan-24 08-Jan-24 220 0.044

+/-

0.007 0.022 02-Jan-24 08-Jan-24 220 0.038

+/-

0.007 Duplicate 08-Jan-24 15-Jan-24 307 0.030

+/-

0.005 0.013 15-Jan-24 22-Jan-24 296 0.033

+/-

0.005 0.012 22-Jan-24 29-Jan-24 301 0.015

+/-

0.004 0.010 29-Jan-24 05-Feb-24 300 0.023

+/-

0.005 0.011 05-Feb-24 12-Feb-24 296 0.021

+/-

0.004 0.016 12-Feb-24 19-Feb-24 303 0.025

+/-

0.005 0.012 19-Feb-24 26-Feb-24 290 0.026

+/-

0.005 0.007 26-Feb-24 04-Mar-24 307 0.026

+/-

0.004 0.006 04-Mar-24 11-Mar-24 307 0.021

+/-

0.004 0.011 11-Mar-24 18-Mar-24 298 0.026

+/-

0.005 0.009 18-Mar-24 25-Mar-24 293 0.025

+/-

0.005 0.010 25-Mar-24 01-Apr-24 301 0.025

+/-

0.004 0.011 01-Apr-24 08-Apr-24 310 0.014

+/-

0.004 0.011 08-Apr-24 15-Apr-24 298 0.021

+/-

0.004 0.006 15-Apr-24 22-Apr-24 303 0.020

+/-

0.004 0.025 22-Apr-24 30-Apr-24 338 0.023

+/-

0.004 0.013 30-Apr-24 06-May-24 264 0.010

+/-

0.005 0.019 06-May-24 13-May-24 302 0.015

+/-

0.004 0.017 13-May-24 20-May-24 302 0.024

+/-

0.004 0.013 20-May-24 28-May-24 349 0.019

+/-

0.004 0.007 28-May-24 03-Jun-24 255 0.022

+/-

0.005 0.023 03-Jun-24 11-Jun-24 339 0.014

+/-

0.004 0.008 11-Jun-24 17-Jun-24 256 0.031

+/-

0.005 0.010 11-Jun-24 17-Jun-24 256 0.023

+/-

0.005 Duplicate 17-Jun-24 24-Jun-24 308 0.019

+/-

0.004 0.010 17-Jun-24 24-Jun-24 308 0.018

+/-

0.004 Duplicate 24-Jun-24 01-Jul-24 285 0.016

+/-

0.004 0.015 01-Jul-24 08-Jul-24 292 0.019

+/-

0.004 0.013 08-Jul-24 16-Jul-24 335 0.030

+/-

0.004 0.013 16-Jul-24 22-Jul-24 266 0.021

+/-

0.005 0.008 22-Jul-24 29-Jul-24 297 0.036

+/-

0.005 0.010 22-Jul-24 29-Jul-24 297 0.034

+/-

0.005 Duplicate 29-Jul-24 05-Aug-24 298 0.023

+/-

0.004 0.018 05-Aug-24 12-Aug-24 308 0.021

+/-

0.004 0.016 12-Aug-24 19-Aug-24 289 0.026

+/-

0.005 0.008 19-Aug-24 26-Aug-24 295 0.042

+/-

0.005 0.010 26-Aug-24 03-Sep-24 340 0.027

+/-

0.004 0.012 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 5

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 032 Air Particulate Filters and Radioiodine Canisters 03-Sep-24 09-Sep-24 250 0.023

+/-

0.005 0.012 09-Sep-24 16-Sep-24 296 0.021

+/-

0.005 0.009 16-Sep-24 23-Sep-24 299 0.017

+/-

0.004 0.008 23-Sep-24 30-Sep-24 293 0.034

+/-

0.005 0.014 30-Sep-24 07-Oct-24 305 0.040

+/-

0.005 0.010 07-Oct-24 14-Oct-24 298 0.039

+/-

0.005 0.013 14-Oct-24 21-Oct-24 293 0.023

+/-

0.005 0.010 21-Oct-24 28-Oct-24 291 0.034

+/-

0.005 0.008 28-Oct-24 04-Nov-24 305 0.020

+/-

0.004 0.017 28-Oct-24 04-Nov-24 305 0.024

+/-

0.005 Duplicate 04-Nov-24 12-Nov-24 357 0.021

+/-

0.004 0.009 12-Nov-24 19-Nov-24 294 0.028

+/-

0.005 0.012 19-Nov-24 25-Nov-24 261 0.020

+/-

0.005 0.014 25-Nov-24 02-Dec-24 301 0.045

+/-

0.005 0.016 02-Dec-24 09-Dec-24 295 0.036

+/-

0.005 0.026 09-Dec-24 16-Dec-24 309 0.026

+/-

0.005 0.009 16-Dec-24 23-Dec-24 308 0.037

+/-

0.005 0.014 23-Dec-24 30-Dec-24 298 0.056

+/-

0.006 0.027 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 6

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 037 Air Particulate Filters and Radioiodine Canisters 27-Dec-23 02-Jan-24 267 0.026

+/-

0.005 0.012 02-Jan-24 08-Jan-24 255 0.034

+/-

0.006 0.019 08-Jan-24 15-Jan-24 313 0.029

+/-

0.005 0.012 15-Jan-24 22-Jan-24 301 0.031

+/-

0.005 0.012 22-Jan-24 29-Jan-24 299 0.019

+/-

0.004 0.010 29-Jan-24 05-Feb-24 302 0.021

+/-

0.004 0.010 05-Feb-24 12-Feb-24 297 0.022

+/-

0.004 0.016 12-Feb-24 19-Feb-24 305 0.023

+/-

0.004 0.012 19-Feb-24 26-Feb-24 298 0.028

+/-

0.005 0.007 19-Feb-24 26-Feb-24 298 0.028

+/-

0.005 Duplicate 26-Feb-24 04-Mar-24 305 0.023

+/-

0.004 0.006 04-Mar-24 11-Mar-24 304 0.019

+/-

0.004 0.011 04-Mar-24 11-Mar-24 304 0.022

+/-

0.005 Duplicate 11-Mar-24 18-Mar-24 299 0.022

+/-

0.005 0.009 18-Mar-24 25-Mar-24 294 0.025

+/-

0.005 0.010 25-Mar-24 01-Apr-24 307 0.024

+/-

0.004 0.011 01-Apr-24 08-Apr-24 312 0.013

+/-

0.004 0.011 08-Apr-24 15-Apr-24 298 0.024

+/-

0.005 0.006 08-Apr-24 15-Apr-24 298 0.019

+/-

0.004 Duplicate 15-Apr-24 22-Apr-24 307 0.019

+/-

0.004 0.026 22-Apr-24 30-Apr-24 334 0.019

+/-

0.004 0.014 30-Apr-24 06-May-24 260 0.013

+/-

0.005 0.019 06-May-24 13-May-24 297 0.017

+/-

0.004 0.017 13-May-24 20-May-24 300 0.020

+/-

0.004 0.013 20-May-24 28-May-24 345 0.017

+/-

0.004 0.007 28-May-24 03-Jun-24 256 0.021

+/-

0.005 0.023 28-May-24 03-Jun-24 256 0.018

+/-

0.005 Duplicate 03-Jun-24 11-Jun-24 342 0.015

+/-

0.004 0.008 11-Jun-24 17-Jun-24 256 0.028

+/-

0.005 0.010 17-Jun-24 24-Jun-24 259 0.018

+/-

0.005 0.012 24-Jun-24 01-Jul-24 298 0.015

+/-

0.004 0.015 01-Jul-24 08-Jul-24 292 0.021

+/-

0.004 0.013 01-Jul-24 08-Jul-24 292 0.019

+/-

0.004 Duplicate 08-Jul-24 16-Jul-24 340 0.026

+/-

0.004 0.013 16-Jul-24 22-Jul-24 263 0.020

+/-

0.005 0.009 22-Jul-24 29-Jul-24 299 0.033

+/-

0.005 0.010 29-Jul-24 05-Aug-24 300 0.026

+/-

0.005 0.018 05-Aug-24 12-Aug-24 304 0.023

+/-

0.004 0.017 12-Aug-24 19-Aug-24 303 0.023

+/-

0.004 0.008 19-Aug-24 26-Aug-24 295 0.040

+/-

0.005 0.010 19-Aug-24 26-Aug-24 295 0.039

+/-

0.005 Duplicate 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 7

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 037 Air Particulate Filters and Radioiodine Canisters 26-Aug-24 03-Sep-24 342 0.026

+/-

0.004 0.012 03-Sep-24 09-Sep-24 255 0.027

+/-

0.005 0.012 09-Sep-24 16-Sep-24 296 0.027

+/-

0.005 0.009 16-Sep-24 23-Sep-24 296 0.018

+/-

0.004 0.008 23-Sep-24 30-Sep-24 299 0.033

+/-

0.005 0.014 30-Sep-24 07-Oct-24 302 0.033

+/-

0.005 0.010 07-Oct-24 14-Oct-24 295 0.040

+/-

0.005 0.013 14-Oct-24 21-Oct-24 299 0.025

+/-

0.005 0.010 21-Oct-24 28-Oct-24 302 0.036

+/-

0.005 0.008 28-Oct-24 04-Nov-24 303 0.024

+/-

0.005 0.017 04-Nov-24 12-Nov-24 354 0.021

+/-

0.004 0.009 12-Nov-24 19-Nov-24 292 0.034

+/-

0.005 0.013 19-Nov-24 25-Nov-24 259 0.021

+/-

0.005 0.014 25-Nov-24 02-Dec-24 306 0.044

+/-

0.005 0.015 02-Dec-24 09-Dec-24 307 0.036

+/-

0.005 0.025 09-Dec-24 16-Dec-24 310 0.027

+/-

0.005 0.009 16-Dec-24 23-Dec-24 298 0.035

+/-

0.005 0.014 23-Dec-24 30-Dec-24 300 0.057

+/-

0.006 0.027 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 8

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 049 Air Particulate Filters and Radioiodine Canisters 27-Dec-23 02-Jan-24 268 0.026

+/-

0.005 0.012 02-Jan-24 08-Jan-24 250 0.035

+/-

0.006 0.020 08-Jan-24 15-Jan-24 463 0.027

+/-

0.003 0.008 15-Jan-24 22-Jan-24 314 0.030

+/-

0.005 0.011 22-Jan-24 29-Jan-24 295 0.017

+/-

0.004 0.010 29-Jan-24 05-Feb-24 299 0.023

+/-

0.005 0.011 05-Feb-24 12-Feb-24 294 0.023

+/-

0.004 0.016 12-Feb-24 19-Feb-24 305 0.022

+/-

0.004 0.012 19-Feb-24 26-Feb-24 297 0.028

+/-

0.005 0.007 26-Feb-24 04-Mar-24 303 0.023

+/-

0.004 0.006 26-Feb-24 04-Mar-24 303 0.025

+/-

0.004 Duplicate 04-Mar-24 11-Mar-24 306 0.021

+/-

0.004 0.011 11-Mar-24 18-Mar-24 297 0.026

+/-

0.005 0.009 18-Mar-24 25-Mar-24 296 0.027

+/-

0.005 0.010 25-Mar-24 01-Apr-24 306 0.024

+/-

0.004 0.011 25-Mar-24 01-Apr-24 306 0.024

+/-

0.004 Duplicate 01-Apr-24 08-Apr-24 307 0.015

+/-

0.004 0.012 08-Apr-24 15-Apr-24 298 0.023

+/-

0.004 0.006 15-Apr-24 22-Apr-24 309 0.018

+/-

0.004 0.026 22-Apr-24 30-Apr-24 332 0.026

+/-

0.004 0.014 30-Apr-24 06-May-24 262 0.010

+/-

0.005 0.019 06-May-24 13-May-24 298 0.015

+/-

0.004 0.017 13-May-24 20-May-24 301 0.022

+/-

0.004 0.013 20-May-24 28-May-24 348 0.020

+/-

0.004 0.007 20-May-24 28-May-24 348 0.022

+/-

0.004 Duplicate 28-May-24 03-Jun-24 258 0.022

+/-

0.005 0.023 03-Jun-24 11-Jun-24 346 0.014

+/-

0.004 0.008 11-Jun-24 17-Jun-24 255 0.026

+/-

0.005 0.010 17-Jun-24 24-Jun-24 299 0.021

+/-

0.004 0.011 24-Jun-24 01-Jul-24 299 0.017

+/-

0.004 0.015 01-Jul-24 08-Jul-24 299 0.019

+/-

0.004 0.013 08-Jul-24 16-Jul-24 344 0.028

+/-

0.004 0.013 08-Jul-24 16-Jul-24 344 0.028

+/-

0.004 Duplicate 16-Jul-24 22-Jul-24 263 0.019

+/-

0.005 0.009 22-Jul-24 29-Jul-24 299 0.033

+/-

0.005 0.010 29-Jul-24 05-Aug-24 299 0.023

+/-

0.004 0.018 05-Aug-24 12-Aug-24 305 0.024

+/-

0.004 0.017 12-Aug-24 19-Aug-24 299 0.028

+/-

0.004 0.008 19-Aug-24 26-Aug-24 301 0.040

+/-

0.005 0.009 26-Aug-24 03-Sep-24 342 0.027

+/-

0.004 0.012 03-Sep-24 09-Sep-24 258 0.029

+/-

0.005 0.012 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 9

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 049 Air Particulate Filters and Radioiodine Canisters 09-Sep-24 16-Sep-24 300 0.026

+/-

0.005 0.009 16-Sep-24 23-Sep-24 298 0.021

+/-

0.004 0.008 23-Sep-24 30-Sep-24 299 0.038

+/-

0.005 0.014 30-Sep-24 07-Oct-24 305 0.031

+/-

0.005 0.010 07-Oct-24 14-Oct-24 294 0.042

+/-

0.005 0.013 07-Oct-24 14-Oct-24 294 0.045

+/-

0.005 Duplicate 14-Oct-24 21-Oct-24 302 0.020

+/-

0.004 0.010 21-Oct-24 28-Oct-24 302 0.037

+/-

0.005 0.008 28-Oct-24 04-Nov-24 306 0.020

+/-

0.004 0.017 04-Nov-24 12-Nov-24 358 0.021

+/-

0.004 0.009 12-Nov-24 19-Nov-24 298 0.033

+/-

0.005 0.012 19-Nov-24 25-Nov-24 263 0.027

+/-

0.005 0.014 25-Nov-24 02-Dec-24 305 0.045

+/-

0.005 0.016 02-Dec-24 09-Dec-24 297 0.038

+/-

0.005 0.026 09-Dec-24 16-Dec-24 305 0.027

+/-

0.005 0.009 16-Dec-24 23-Dec-24 303 0.042

+/-

0.005 0.014 23-Dec-24 30-Dec-24 297 0.053

+/-

0.006 0.027 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 10

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 053 Air Particulate Filters and Radioiodine Canisters 27-Dec-23 02-Jan-24 263 0.027

+/-

0.005 0.012 02-Jan-24 08-Jan-24 255 0.038

+/-

0.006 0.019 08-Jan-24 15-Jan-24 312 0.026

+/-

0.004 0.013 15-Jan-24 22-Jan-24 304 0.031

+/-

0.005 0.012 15-Jan-24 22-Jan-24 304 0.030

+/-

0.005 Duplicate 22-Jan-24 29-Jan-24 301 0.018

+/-

0.004 0.010 29-Jan-24 05-Feb-24 301 0.023

+/-

0.005 0.010 05-Feb-24 12-Feb-24 297 0.020

+/-

0.004 0.016 12-Feb-24 19-Feb-24 303 0.024

+/-

0.005 0.012 19-Feb-24 26-Feb-24 296 0.025

+/-

0.005 0.007 26-Feb-24 04-Mar-24 305 0.027

+/-

0.005 0.006 04-Mar-24 11-Mar-24 305 0.024

+/-

0.005 0.011 11-Mar-24 18-Mar-24 294 0.029

+/-

0.005 0.009 11-Mar-24 18-Mar-24 294 0.024

+/-

0.005 Duplicate 18-Mar-24 25-Mar-24 294 0.023

+/-

0.004 0.010 25-Mar-24 01-Apr-24 307 0.028

+/-

0.004 0.011 01-Apr-24 08-Apr-24 297 0.014

+/-

0.004 0.012 08-Apr-24 15-Apr-24 295 0.020

+/-

0.004 0.006 15-Apr-24 22-Apr-24 310 0.019

+/-

0.004 0.026 22-Apr-24 30-Apr-24 370 0.023

+/-

0.003 0.012 30-Apr-24 06-May-24 264 0.011

+/-

0.005 0.019 06-May-24 13-May-24 291 0.013

+/-

0.004 0.018 13-May-24 20-May-24 264 0.019

+/-

0.005 0.015 20-May-24 28-May-24 345 0.020

+/-

0.004 0.007 28-May-24 03-Jun-24 255 0.021

+/-

0.005 0.023 03-Jun-24 11-Jun-24 334 0.014

+/-

0.004 0.008 11-Jun-24 17-Jun-24 255 0.026

+/-

0.005 0.010 17-Jun-24 24-Jun-24 301 0.019

+/-

0.004 0.010 24-Jun-24 01-Jul-24 299 0.012

+/-

0.004 0.015 01-Jul-24 08-Jul-24 295 0.019

+/-

0.004 0.013 08-Jul-24 16-Jul-24 348 0.027

+/-

0.004 0.013 16-Jul-24 22-Jul-24 259 0.017

+/-

0.005 0.009 22-Jul-24 29-Jul-24 295 0.034

+/-

0.005 0.010 29-Jul-24 05-Aug-24 278 0.026

+/-

0.005 0.019 05-Aug-24 12-Aug-24 299 0.021

+/-

0.004 0.017 12-Aug-24 19-Aug-24 296 0.023

+/-

0.004 0.008 19-Aug-24 26-Aug-24 301 0.036

+/-

0.005 0.009 26-Aug-24 03-Sep-24 362 0.025

+/-

0.004 0.011 03-Sep-24 09-Sep-24 254 0.026

+/-

0.005 0.012 09-Sep-24 16-Sep-24 296 0.023

+/-

0.005 0.009 16-Sep-24 23-Sep-24 296 0.017

+/-

0.004 0.008 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 11

Collection StartDate Collection EndDate Volume m3 I-131 Concentration (pCi/m3)

Duplicate Analysis Gross Beta Concentration (pCi/m3)

Location: 053 Air Particulate Filters and Radioiodine Canisters 23-Sep-24 30-Sep-24 299 0.029

+/-

0.005 0.014 30-Sep-24 07-Oct-24 303 0.036

+/-

0.005 0.010 07-Oct-24 14-Oct-24 293 0.042

+/-

0.005 0.013 14-Oct-24 21-Oct-24 293 0.022

+/-

0.005 0.010 21-Oct-24 28-Oct-24 299 0.032

+/-

0.005 0.008 28-Oct-24 04-Nov-24 301 0.022

+/-

0.004 0.017 04-Nov-24 12-Nov-24 348 0.017

+/-

0.004 0.009 12-Nov-24 19-Nov-24 294 0.031

+/-

0.005 0.012 19-Nov-24 25-Nov-24 253 0.021

+/-

0.006 0.014 25-Nov-24 02-Dec-24 303 0.041

+/-

0.005 0.016 25-Nov-24 02-Dec-24 303 0.042

+/-

0.005 Duplicate 02-Dec-24 09-Dec-24 298 0.035

+/-

0.005 0.026 02-Dec-24 09-Dec-24 298 0.036

+/-

0.005 Duplicate 09-Dec-24 16-Dec-24 305 0.026

+/-

0.005 0.009 16-Dec-24 23-Dec-24 300 0.039

+/-

0.005 0.014 23-Dec-24 30-Dec-24 306 0.056

+/-

0.006 0.026 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 12

Quarterly Air Particulates - Gamma Location:

002 Nuclide Concentration (pCi/m3) 01-Apr-24 BE-7 0.072 +/-

0.017 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 01-Jul-24 BE-7 0.089 +/-

0.014 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Sep-24 BE-7 0.089 +/-

0.016 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Dec-24 BE-7 0.042 +/-

0.009 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001

• Duplicate Analysis 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 13

Quarterly Air Particulates - Gamma Location:

018 Nuclide Concentration (pCi/m3) 01-Apr-24 BE-7 0.060 +/-

0.016 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.002 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 01-Jul-24 BE-7 0.083 +/-

0.017 MN-54 0.001 CO-58 0.001 FE-59 0.003 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Sep-24 BE-7 0.071 +/-

0.016 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.002 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Dec-24 BE-7 0.058 +/-

0.012 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001

• Duplicate Analysis 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 14

Quarterly Air Particulates - Gamma Location:

032 Nuclide Concentration (pCi/m3) 01-Apr-24 BE-7 0.081 +/-

0.013 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 01-Jul-24 BE-7 0.090 +/-

0.012 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Sep-24 BE-7 0.076 +/-

0.021 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.002 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Dec-24 BE-7 0.046 +/-

0.013 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.002 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.002

• Duplicate Analysis 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 15

Quarterly Air Particulates - Gamma Location:

037 Nuclide Concentration (pCi/m3) 01-Apr-24 BE-7 0.069 +/-

0.015 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 01-Jul-24 BE-7 0.075 +/-

0.012 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Sep-24 BE-7 0.112 +/-

0.020 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.002 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Dec-24 BE-7 0.045 +/-

0.015 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.003 ZR-NB-95 0.001 CS-134 0.002 CS-137 0.001

• Duplicate Analysis 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 16

Quarterly Air Particulates - Gamma Location:

049 Nuclide Concentration (pCi/m3) 01-Apr-24 BE-7 0.063 +/-

0.012 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 01-Jul-24 BE-7 0.093 +/-

0.015 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Sep-24 BE-7 0.091 +/-

0.016 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Dec-24 BE-7 0.030 +/-

0.007 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.002 CS-134 0.001 CS-137 0.001

• Duplicate Analysis 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 17

Quarterly Air Particulates - Gamma Location:

053 Nuclide Concentration (pCi/m3) 01-Apr-24 BE-7 0.068 +/-

0.016 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 01-Jul-24 BE-7 0.090 +/-

0.015 MN-54 0.001 CO-58 0.001 FE-59 0.001 CO-60 0.001 ZN-65 0.001 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Sep-24 BE-7 0.091 +/-

0.018 MN-54 0.001 CO-58 0.001 FE-59 0.002 CO-60 0.001 ZN-65 0.002 ZR-NB-95 0.001 CS-134 0.001 CS-137 0.001 Nuclide Concentration (pCi/m3) 30-Dec-24 BE-7 0.061 +/-

0.014 MN-54 0.002 CO-58 0.002 FE-59 0.003 CO-60 0.001 ZN-65 0.003 ZR-NB-95 0.002 CS-134 0.002 CS-137 0.001

• Duplicate Analysis 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 18

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Liter) 3.2 MN-54 11-Jan-24 SURFACE WATER 4.2 CO-58 11-Jan-24 SURFACE WATER 4.8 FE-59 11-Jan-24 SURFACE WATER 2.1 CO-60 11-Jan-24 SURFACE WATER 6.0 ZN-65 11-Jan-24 SURFACE WATER 4.7 ZR-NB-95 11-Jan-24 SURFACE WATER 6.9 I-131 11-Jan-24 SURFACE WATER 3.5 CS-134 11-Jan-24 SURFACE WATER 2.4 CS-137 11-Jan-24 SURFACE WATER 4.3 BA-LA-140 11-Jan-24 SURFACE WATER 174.0 H-3 11-Jan-24 SURFACE WATER 2.8 MN-54 21-Feb-24 SURFACE WATER 2.8 CO-58 21-Feb-24 SURFACE WATER 2.8 FE-59 21-Feb-24 SURFACE WATER 2.7 CO-60 21-Feb-24 SURFACE WATER 5.7 ZN-65 21-Feb-24 SURFACE WATER 2.6 ZR-NB-95 21-Feb-24 SURFACE WATER 3.0 I-131 21-Feb-24 SURFACE WATER 2.9 CS-134 21-Feb-24 SURFACE WATER 3.2 CS-137 21-Feb-24 SURFACE WATER 2.2 BA-LA-140 21-Feb-24 SURFACE WATER 179.0 H-3 21-Feb-24 SURFACE WATER 474.0 FE-55 21-Feb-24 SURFACE WATER 2.9 MN-54 06-Mar-24 SURFACE WATER 1.8 CO-58 06-Mar-24 SURFACE WATER 5.2 FE-59 06-Mar-24 SURFACE WATER 3.6 CO-60 06-Mar-24 SURFACE WATER 2.7 ZN-65 06-Mar-24 SURFACE WATER 2.3 ZR-NB-95 06-Mar-24 SURFACE WATER 4.0 I-131 06-Mar-24 SURFACE WATER 3.2 CS-134 06-Mar-24 SURFACE WATER 4.3 CS-137 06-Mar-24 SURFACE WATER 3.1 BA-LA-140 06-Mar-24 SURFACE WATER 175.0 H-3 06-Mar-24 SURFACE WATER 1.7 MN-54 17-Apr-24 SURFACE WATER 2.2 CO-58 17-Apr-24 SURFACE WATER 4.7 FE-59 17-Apr-24 SURFACE WATER 2.4 CO-60 17-Apr-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 19

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Liter) 3.9 ZN-65 17-Apr-24 SURFACE WATER 2.8 ZR-NB-95 17-Apr-24 SURFACE WATER 2.7 I-131 17-Apr-24 SURFACE WATER 2.5 CS-134 17-Apr-24 SURFACE WATER 2.2 CS-137 17-Apr-24 SURFACE WATER 1.7 BA-LA-140 17-Apr-24 SURFACE WATER 170.0 H-3 17-Apr-24 SURFACE WATER 2.2 MN-54 15-May-24 SURFACE WATER 2.0 CO-58 15-May-24 SURFACE WATER 2.7 FE-59 15-May-24 SURFACE WATER 2.0 CO-60 15-May-24 SURFACE WATER 3.7 ZN-65 15-May-24 SURFACE WATER 2.2 ZR-NB-95 15-May-24 SURFACE WATER 2.1 I-131 15-May-24 SURFACE WATER 2.2 CS-134 15-May-24 SURFACE WATER 2.3 CS-137 15-May-24 SURFACE WATER 2.3 BA-LA-140 15-May-24 SURFACE WATER 188.0 H-3 15-May-24 SURFACE WATER 114.0 FE-55 15-May-24 SURFACE WATER 7.3 MN-54 25-Jun-24 SURFACE WATER 7.3 MN-54 25-Jun-24 SURFACE WATER 4.5 CO-58 25-Jun-24 SURFACE WATER 4.5 CO-58 25-Jun-24 SURFACE WATER 7.3 FE-59 25-Jun-24 SURFACE WATER 7.3 FE-59 25-Jun-24 SURFACE WATER 2.8 CO-60 25-Jun-24 SURFACE WATER 2.8 CO-60 25-Jun-24 SURFACE WATER 10.2 ZN-65 25-Jun-24 SURFACE WATER 10.2 ZN-65 25-Jun-24 SURFACE WATER 6.9 ZR-NB-95 25-Jun-24 SURFACE WATER 6.9 ZR-NB-95 25-Jun-24 SURFACE WATER 4.2 I-131 25-Jun-24 SURFACE WATER 4.1 I-131 25-Jun-24 SURFACE WATER 6.3 CS-134 25-Jun-24 SURFACE WATER 6.3 CS-134 25-Jun-24 SURFACE WATER 3.3 CS-137 25-Jun-24 SURFACE WATER 3.3 CS-137 25-Jun-24 SURFACE WATER 3.9 BA-LA-140 25-Jun-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 20

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Liter) 3.9 BA-LA-140 25-Jun-24 SURFACE WATER 185.0 H-3 25-Jun-24 SURFACE WATER 185.0 H-3 25-Jun-24 SURFACE WATER 2.5 MN-54 23-Jul-24 SURFACE WATER 2.5 CO-58 23-Jul-24 SURFACE WATER 3.0 FE-59 23-Jul-24 SURFACE WATER 1.7 CO-60 23-Jul-24 SURFACE WATER 3.4 ZN-65 23-Jul-24 SURFACE WATER 1.8 ZR-NB-95 23-Jul-24 SURFACE WATER 3.0 I-131 23-Jul-24 SURFACE WATER 2.5 CS-134 23-Jul-24 SURFACE WATER 2.9 CS-137 23-Jul-24 SURFACE WATER 3.5 BA-LA-140 23-Jul-24 SURFACE WATER 177.0 H-3 23-Jul-24 SURFACE WATER 4.4 MN-54 13-Aug-24 SURFACE WATER 5.5 CO-58 13-Aug-24 SURFACE WATER 11.1 FE-59 13-Aug-24 SURFACE WATER 4.5 CO-60 13-Aug-24 SURFACE WATER 6.0 ZN-65 13-Aug-24 SURFACE WATER 5.8 ZR-NB-95 13-Aug-24 SURFACE WATER 5.7 I-131 13-Aug-24 SURFACE WATER 5.8 CS-134 13-Aug-24 SURFACE WATER 2.9 CS-137 13-Aug-24 SURFACE WATER 4.8 BA-LA-140 13-Aug-24 SURFACE WATER 181.0 H-3 13-Aug-24 SURFACE WATER 112.0 FE-55 13-Aug-24 SURFACE WATER 4.1 MN-54 18-Sep-24 SURFACE WATER 4.0 CO-58 18-Sep-24 SURFACE WATER 10.1 FE-59 18-Sep-24 SURFACE WATER 4.7 CO-60 18-Sep-24 SURFACE WATER 6.4 ZN-65 18-Sep-24 SURFACE WATER 7.4 ZR-NB-95 18-Sep-24 SURFACE WATER 7.0 I-131 18-Sep-24 SURFACE WATER 6.0 CS-134 18-Sep-24 SURFACE WATER 5.6 CS-137 18-Sep-24 SURFACE WATER 4.8 BA-LA-140 18-Sep-24 SURFACE WATER 180.0 H-3 18-Sep-24 SURFACE WATER 6.6 MN-54 22-Oct-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 21

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Liter) 6.2 CO-58 22-Oct-24 SURFACE WATER 5.6 FE-59 22-Oct-24 SURFACE WATER 5.4 CO-60 22-Oct-24 SURFACE WATER 5.0 ZN-65 22-Oct-24 SURFACE WATER 5.5 ZR-NB-95 22-Oct-24 SURFACE WATER 5.7 I-131 22-Oct-24 SURFACE WATER 8.6 CS-134 22-Oct-24 SURFACE WATER 5.2 CS-137 22-Oct-24 SURFACE WATER 7.0 BA-LA-140 22-Oct-24 SURFACE WATER 177.0 H-3 22-Oct-24 SURFACE WATER 1.2 MN-54 19-Nov-24 SURFACE WATER 0.6 CO-58 19-Nov-24 SURFACE WATER 2.1 FE-59 19-Nov-24 SURFACE WATER 1.3 CO-60 19-Nov-24 SURFACE WATER 2.5 ZN-65 19-Nov-24 SURFACE WATER 1.3 ZR-NB-95 19-Nov-24 SURFACE WATER 1.6 I-131 19-Nov-24 SURFACE WATER 1.1 CS-134 19-Nov-24 SURFACE WATER 1.1 CS-137 19-Nov-24 SURFACE WATER 1.0 BA-LA-140 19-Nov-24 SURFACE WATER 185.0 H-3 19-Nov-24 SURFACE WATER 396 FE-55 19-Nov-24 SURFACE WATER 5.3 MN-54 16-Dec-24 SURFACE WATER 4.3 CO-58 16-Dec-24 SURFACE WATER 5.2 FE-59 16-Dec-24 SURFACE WATER 6.3 CO-60 16-Dec-24 SURFACE WATER 8.8 ZN-65 16-Dec-24 SURFACE WATER 4.8 ZR-NB-95 16-Dec-24 SURFACE WATER 4.3 I-131 16-Dec-24 SURFACE WATER 6.9 CS-134 16-Dec-24 SURFACE WATER 6.7 CS-137 16-Dec-24 SURFACE WATER 7.3 BA-LA-140 16-Dec-24 SURFACE WATER 182.0 H-3 16-Dec-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 22

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: SP Concentration (pCi/Liter) 3.3 MN-54 11-Jan-24 SURFACE WATER 3.5 CO-58 11-Jan-24 SURFACE WATER 6.0 FE-59 11-Jan-24 SURFACE WATER 7.0 CO-60 11-Jan-24 SURFACE WATER 7.9 ZN-65 11-Jan-24 SURFACE WATER 6.0 ZR-NB-95 11-Jan-24 SURFACE WATER 5.2 I-131 11-Jan-24 SURFACE WATER 4.9 CS-134 11-Jan-24 SURFACE WATER 6.6 CS-137 11-Jan-24 SURFACE WATER 4.9 BA-LA-140 11-Jan-24 SURFACE WATER 362.0

+/-

12,906 H-3 11-Jan-24 SURFACE WATER 1.4 MN-54 21-Feb-24 SURFACE WATER 1.6 CO-58 21-Feb-24 SURFACE WATER 3.6 FE-59 21-Feb-24 SURFACE WATER 2.0 CO-60 21-Feb-24 SURFACE WATER 3.0 ZN-65 21-Feb-24 SURFACE WATER 1.9 ZR-NB-95 21-Feb-24 SURFACE WATER 3.0 I-131 21-Feb-24 SURFACE WATER 1.6 CS-134 21-Feb-24 SURFACE WATER 2.2 CS-137 21-Feb-24 SURFACE WATER 2.1 BA-LA-140 21-Feb-24 SURFACE WATER 389.0

+/-

15,030 H-3 21-Feb-24 SURFACE WATER 451.0 FE-55 21-Feb-24 SURFACE WATER 1.6 MN-54 06-Mar-24 SURFACE WATER 0.9 CO-58 06-Mar-24 SURFACE WATER 2.7 FE-59 06-Mar-24 SURFACE WATER 2.1 CO-60 06-Mar-24 SURFACE WATER 2.6 ZN-65 06-Mar-24 SURFACE WATER 1.8 ZR-NB-95 06-Mar-24 SURFACE WATER 1.3 I-131 06-Mar-24 SURFACE WATER 1.5 CS-134 06-Mar-24 SURFACE WATER 1.8 CS-137 06-Mar-24 SURFACE WATER 1.0 BA-LA-140 06-Mar-24 SURFACE WATER 382.0

+/-

14,675 H-3 06-Mar-24 SURFACE WATER 2.8 MN-54 17-Apr-24 SURFACE WATER 1.7 CO-58 17-Apr-24 SURFACE WATER 4.5 FE-59 17-Apr-24 SURFACE WATER 3.4 CO-60 17-Apr-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 23

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: SP Concentration (pCi/Liter) 4.1 ZN-65 17-Apr-24 SURFACE WATER 2.3 ZR-NB-95 17-Apr-24 SURFACE WATER 3.1 I-131 17-Apr-24 SURFACE WATER 2.9 CS-134 17-Apr-24 SURFACE WATER 4.4 CS-137 17-Apr-24 SURFACE WATER 2.6 BA-LA-140 17-Apr-24 SURFACE WATER 375.0

+/-

14,164 H-3 17-Apr-24 SURFACE WATER 1.0 MN-54 15-May-24 SURFACE WATER 0.9 CO-58 15-May-24 SURFACE WATER 3.0 FE-59 15-May-24 SURFACE WATER 1.9 CO-60 15-May-24 SURFACE WATER 2.5 ZN-65 15-May-24 SURFACE WATER 1.6 ZR-NB-95 15-May-24 SURFACE WATER 1.2 I-131 15-May-24 SURFACE WATER 1.4 CS-134 15-May-24 SURFACE WATER 2.1 CS-137 15-May-24 SURFACE WATER 1.4 BA-LA-140 15-May-24 SURFACE WATER 384.0

+/-

14,009 H-3 15-May-24 SURFACE WATER 112.0 FE-55 15-May-24 SURFACE WATER 2.0 MN-54 25-Jun-24 SURFACE WATER 2.0 MN-54 25-Jun-24 SURFACE WATER 3.1 CO-58 25-Jun-24 SURFACE WATER 3.1 CO-58 25-Jun-24 SURFACE WATER 3.5 FE-59 25-Jun-24 SURFACE WATER 3.5 FE-59 25-Jun-24 SURFACE WATER 3.3 CO-60 25-Jun-24 SURFACE WATER 3.3 CO-60 25-Jun-24 SURFACE WATER 5.8 ZN-65 25-Jun-24 SURFACE WATER 5.8 ZN-65 25-Jun-24 SURFACE WATER 2.5 ZR-NB-95 25-Jun-24 SURFACE WATER 2.5 ZR-NB-95 25-Jun-24 SURFACE WATER 3.4 I-131 25-Jun-24 SURFACE WATER 3.4 I-131 25-Jun-24 SURFACE WATER 2.8 CS-134 25-Jun-24 SURFACE WATER 2.8 CS-134 25-Jun-24 SURFACE WATER 3.7 CS-137 25-Jun-24 SURFACE WATER 3.7 CS-137 25-Jun-24 SURFACE WATER 2.6 BA-LA-140 25-Jun-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 24

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: SP Concentration (pCi/Liter) 2.6 BA-LA-140 25-Jun-24 SURFACE WATER 366.0

+/-

12,859 H-3 25-Jun-24 SURFACE WATER 366.0

+/-

12,859 H-3 25-Jun-24 SURFACE WATER 2.0 MN-54 23-Jul-24 SURFACE WATER 2.4 CO-58 23-Jul-24 SURFACE WATER 5.3 FE-59 23-Jul-24 SURFACE WATER 2.0 CO-60 23-Jul-24 SURFACE WATER 4.6 ZN-65 23-Jul-24 SURFACE WATER 2.2 ZR-NB-95 23-Jul-24 SURFACE WATER 3.0 I-131 23-Jul-24 SURFACE WATER 2.8 CS-134 23-Jul-24 SURFACE WATER 3.1 CS-137 23-Jul-24 SURFACE WATER 1.0 BA-LA-140 23-Jul-24 SURFACE WATER 358.0

+/-

12,375 H-3 23-Jul-24 SURFACE WATER 2.8 MN-54 13-Aug-24 SURFACE WATER 1.9 CO-58 13-Aug-24 SURFACE WATER 3.9 FE-59 13-Aug-24 SURFACE WATER 3.7 CO-60 13-Aug-24 SURFACE WATER 5.9 ZN-65 13-Aug-24 SURFACE WATER 2.6 ZR-NB-95 13-Aug-24 SURFACE WATER 4.9 I-131 13-Aug-24 SURFACE WATER 3.0 CS-134 13-Aug-24 SURFACE WATER 4.1 CS-137 13-Aug-24 SURFACE WATER 2.7 BA-LA-140 13-Aug-24 SURFACE WATER 347.0

+/-

11,514 H-3 13-Aug-24 SURFACE WATER 112.0 FE-55 13-Aug-24 SURFACE WATER 2.7 MN-54 18-Sep-24 SURFACE WATER 2.3 CO-58 18-Sep-24 SURFACE WATER 5.1 FE-59 18-Sep-24 SURFACE WATER 3.2 CO-60 18-Sep-24 SURFACE WATER 3.9 ZN-65 18-Sep-24 SURFACE WATER 2.9 ZR-NB-95 18-Sep-24 SURFACE WATER 3.8 I-131 18-Sep-24 SURFACE WATER 3.3 CS-134 18-Sep-24 SURFACE WATER 4.2 CS-137 18-Sep-24 SURFACE WATER 2.2 BA-LA-140 18-Sep-24 SURFACE WATER 348.0

+/-

11,712 H-3 18-Sep-24 SURFACE WATER 3.3 MN-54 22-Oct-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 25

Exposure Pathway - Waterborne Surface Water Sample Description Collection Date Nuclide Duplicate Analysis Location: SP Concentration (pCi/Liter) 2.8 CO-58 22-Oct-24 SURFACE WATER 6.9 FE-59 22-Oct-24 SURFACE WATER 4.3 CO-60 22-Oct-24 SURFACE WATER 6.2 ZN-65 22-Oct-24 SURFACE WATER 3.2 ZR-NB-95 22-Oct-24 SURFACE WATER 6.3 I-131 22-Oct-24 SURFACE WATER 4.9 CS-134 22-Oct-24 SURFACE WATER 4.8 CS-137 22-Oct-24 SURFACE WATER 3.9 BA-LA-140 22-Oct-24 SURFACE WATER 339.0

+/-

11,058 H-3 22-Oct-24 SURFACE WATER 1.1 MN-54 19-Nov-24 SURFACE WATER 1.1 CO-58 19-Nov-24 SURFACE WATER 2.0 FE-59 19-Nov-24 SURFACE WATER 1.0 CO-60 19-Nov-24 SURFACE WATER 2.4 ZN-65 19-Nov-24 SURFACE WATER 1.2 ZR-NB-95 19-Nov-24 SURFACE WATER 1.2 I-131 19-Nov-24 SURFACE WATER 1.0 CS-134 19-Nov-24 SURFACE WATER 1.3 CS-137 19-Nov-24 SURFACE WATER 1.6 BA-LA-140 19-Nov-24 SURFACE WATER 334.0

+/-

10,663 H-3 19-Nov-24 SURFACE WATER 400.3 FE-55 19-Nov-24 SURFACE WATER 2.9 MN-54 16-Dec-24 SURFACE WATER 2.4 CO-58 16-Dec-24 SURFACE WATER 4.6 FE-59 16-Dec-24 SURFACE WATER 3.7 CO-60 16-Dec-24 SURFACE WATER 3.1 ZN-65 16-Dec-24 SURFACE WATER 2.4 ZR-NB-95 16-Dec-24 SURFACE WATER 4.4 I-131 16-Dec-24 SURFACE WATER 3.6 CS-134 16-Dec-24 SURFACE WATER 4.4 CS-137 16-Dec-24 SURFACE WATER 1.7 BA-LA-140 16-Dec-24 SURFACE WATER 343.0

+/-

11,257 H-3 16-Dec-24 SURFACE WATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 26

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: B-12 Concentration (pCi/Liter) 1.3 MN-54 21-Feb-24 OFFSITE GROUNDWATER 1.2 CO-58 21-Feb-24 OFFSITE GROUNDWATER 2.0 CO-60 21-Feb-24 OFFSITE GROUNDWATER 2.5 ZN-65 21-Feb-24 OFFSITE GROUNDWATER 1.9 ZR-NB-95 21-Feb-24 OFFSITE GROUNDWATER 0.325 I-131 21-Feb-24 OFFSITE GROUNDWATER 1.5 CS-134 21-Feb-24 OFFSITE GROUNDWATER 2.0 CS-137 21-Feb-24 OFFSITE GROUNDWATER 1.8 BA-LA-140 21-Feb-24 OFFSITE GROUNDWATER 179.0 H-3 21-Feb-24 OFFSITE GROUNDWATER 2.7 FE-55 21-Feb-24 OFFSITE GROUNDWATER 1.5 MN-54 15-May-24 OFFSITE GROUNDWATER 1.5 CO-58 15-May-24 OFFSITE GROUNDWATER 2.8 FE-59 15-May-24 OFFSITE GROUNDWATER 2.1 CO-60 15-May-24 OFFSITE GROUNDWATER 3.0 ZN-65 15-May-24 OFFSITE GROUNDWATER 1.4 ZR-NB-95 15-May-24 OFFSITE GROUNDWATER 0.477 I-131 15-May-24 OFFSITE GROUNDWATER 1.5 CS-134 15-May-24 OFFSITE GROUNDWATER 2.0 CS-137 15-May-24 OFFSITE GROUNDWATER 1.1 BA-LA-140 15-May-24 OFFSITE GROUNDWATER 188.0 H-3 15-May-24 OFFSITE GROUNDWATER 1.8 MN-54 13-Aug-24 OFFSITE GROUNDWATER 1.3 CO-58 13-Aug-24 OFFSITE GROUNDWATER 3.8 FE-59 13-Aug-24 OFFSITE GROUNDWATER 1.3 CO-60 13-Aug-24 OFFSITE GROUNDWATER 4.6 ZN-65 13-Aug-24 OFFSITE GROUNDWATER 2.3 ZR-NB-95 13-Aug-24 OFFSITE GROUNDWATER 0.226 I-131 13-Aug-24 OFFSITE GROUNDWATER 2.2 CS-134 13-Aug-24 OFFSITE GROUNDWATER 2.4 CS-137 13-Aug-24 OFFSITE GROUNDWATER 1.8 BA-LA-140 13-Aug-24 OFFSITE GROUNDWATER 181.0 H-3 13-Aug-24 OFFSITE GROUNDWATER 2.0 MN-54 19-Nov-24 OFFSITE GROUNDWATER 2.0 CO-58 19-Nov-24 OFFSITE GROUNDWATER 2.8 FE-59 19-Nov-24 OFFSITE GROUNDWATER 2.4 CO-60 19-Nov-24 OFFSITE GROUNDWATER 4.6 ZN-65 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 27

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: B-12 Concentration (pCi/Liter) 2.3 ZR-NB-95 19-Nov-24 OFFSITE GROUNDWATER 0.443 I-131 19-Nov-24 OFFSITE GROUNDWATER 2.2 CS-134 19-Nov-24 OFFSITE GROUNDWATER 1.3 CS-137 19-Nov-24 OFFSITE GROUNDWATER 3.1 BA-LA-140 19-Nov-24 OFFSITE GROUNDWATER 185.0 H-3 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 28

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: C-10 Concentration (pCi/Liter) 3.3 MN-54 21-Feb-24 OFFSITE GROUNDWATER 1.3 CO-58 21-Feb-24 OFFSITE GROUNDWATER 1.8 CO-60 21-Feb-24 OFFSITE GROUNDWATER 6.3 ZN-65 21-Feb-24 OFFSITE GROUNDWATER 3.3 ZR-NB-95 21-Feb-24 OFFSITE GROUNDWATER 0.455 I-131 21-Feb-24 OFFSITE GROUNDWATER 2.9 CS-134 21-Feb-24 OFFSITE GROUNDWATER 3.2 CS-137 21-Feb-24 OFFSITE GROUNDWATER 2.4 BA-LA-140 21-Feb-24 OFFSITE GROUNDWATER 179.0 H-3 21-Feb-24 OFFSITE GROUNDWATER 4.1 FE-55 21-Feb-24 OFFSITE GROUNDWATER 2.8 MN-54 15-May-24 OFFSITE GROUNDWATER 2.2 CO-58 15-May-24 OFFSITE GROUNDWATER 4.3 FE-59 15-May-24 OFFSITE GROUNDWATER 2.7 CO-60 15-May-24 OFFSITE GROUNDWATER 4.9 ZN-65 15-May-24 OFFSITE GROUNDWATER 2.9 ZR-NB-95 15-May-24 OFFSITE GROUNDWATER 0.43 I-131 15-May-24 OFFSITE GROUNDWATER 3.1 CS-134 15-May-24 OFFSITE GROUNDWATER 1.9 CS-137 15-May-24 OFFSITE GROUNDWATER 1.6 BA-LA-140 15-May-24 OFFSITE GROUNDWATER 188.0 H-3 15-May-24 OFFSITE GROUNDWATER 1.2 MN-54 13-Aug-24 OFFSITE GROUNDWATER 2.2 CO-58 13-Aug-24 OFFSITE GROUNDWATER 3.6 FE-59 13-Aug-24 OFFSITE GROUNDWATER 1.8 CO-60 13-Aug-24 OFFSITE GROUNDWATER 3.9 ZN-65 13-Aug-24 OFFSITE GROUNDWATER 2.4 ZR-NB-95 13-Aug-24 OFFSITE GROUNDWATER 0.177 I-131 13-Aug-24 OFFSITE GROUNDWATER 2.1 CS-134 13-Aug-24 OFFSITE GROUNDWATER 2.8 CS-137 13-Aug-24 OFFSITE GROUNDWATER 2.7 BA-LA-140 13-Aug-24 OFFSITE GROUNDWATER 181.0 H-3 13-Aug-24 OFFSITE GROUNDWATER 2.6 MN-54 19-Nov-24 OFFSITE GROUNDWATER 1.7 CO-58 19-Nov-24 OFFSITE GROUNDWATER 6.2 FE-59 19-Nov-24 OFFSITE GROUNDWATER 2.4 CO-60 19-Nov-24 OFFSITE GROUNDWATER 5.7 ZN-65 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 29

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: C-10 Concentration (pCi/Liter) 2.2 ZR-NB-95 19-Nov-24 OFFSITE GROUNDWATER 0.259 I-131 19-Nov-24 OFFSITE GROUNDWATER 3.6 CS-134 19-Nov-24 OFFSITE GROUNDWATER 3.4 CS-137 19-Nov-24 OFFSITE GROUNDWATER 2.8 BA-LA-140 19-Nov-24 OFFSITE GROUNDWATER 185.0 H-3 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 30

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: C-49 Concentration (pCi/Liter) 1.3 MN-54 21-Feb-24 OFFSITE GROUNDWATER 1.4 CO-58 21-Feb-24 OFFSITE GROUNDWATER 2.4 FE-59 21-Feb-24 OFFSITE GROUNDWATER 1.0 CO-60 21-Feb-24 OFFSITE GROUNDWATER 2.4 ZN-65 21-Feb-24 OFFSITE GROUNDWATER 1.3 ZR-NB-95 21-Feb-24 OFFSITE GROUNDWATER 0.419 I-131 21-Feb-24 OFFSITE GROUNDWATER 3.2 CS-134 21-Feb-24 OFFSITE GROUNDWATER 1.3 CS-137 21-Feb-24 OFFSITE GROUNDWATER 1.5 BA-LA-140 21-Feb-24 OFFSITE GROUNDWATER 179.0 H-3 21-Feb-24 OFFSITE GROUNDWATER 0.7 MN-54 15-May-24 OFFSITE GROUNDWATER 0.9 CO-58 15-May-24 OFFSITE GROUNDWATER 2.3 FE-59 15-May-24 OFFSITE GROUNDWATER 1.1 CO-60 15-May-24 OFFSITE GROUNDWATER 2.2 ZN-65 15-May-24 OFFSITE GROUNDWATER 1.3 ZR-NB-95 15-May-24 OFFSITE GROUNDWATER 0.342 I-131 15-May-24 OFFSITE GROUNDWATER 1.2 CS-134 15-May-24 OFFSITE GROUNDWATER 1.3 CS-137 15-May-24 OFFSITE GROUNDWATER 0.6 BA-LA-140 15-May-24 OFFSITE GROUNDWATER 188.0 H-3 15-May-24 OFFSITE GROUNDWATER 0.8 MN-54 13-Aug-24 OFFSITE GROUNDWATER 0.9 CO-58 13-Aug-24 OFFSITE GROUNDWATER 1.8 FE-59 13-Aug-24 OFFSITE GROUNDWATER 1.0 CO-60 13-Aug-24 OFFSITE GROUNDWATER 1.4 ZN-65 13-Aug-24 OFFSITE GROUNDWATER 0.9 ZR-NB-95 13-Aug-24 OFFSITE GROUNDWATER 0.328 I-131 13-Aug-24 OFFSITE GROUNDWATER 0.8 CS-134 13-Aug-24 OFFSITE GROUNDWATER 1.1 CS-137 13-Aug-24 OFFSITE GROUNDWATER 1.3 BA-LA-140 13-Aug-24 OFFSITE GROUNDWATER 181.0 H-3 13-Aug-24 OFFSITE GROUNDWATER 3.2 MN-54 19-Nov-24 OFFSITE GROUNDWATER 2.3 CO-58 19-Nov-24 OFFSITE GROUNDWATER 4.4 FE-59 19-Nov-24 OFFSITE GROUNDWATER 2.5 CO-60 19-Nov-24 OFFSITE GROUNDWATER 6.0 ZN-65 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 31

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: C-49 Concentration (pCi/Liter) 3.8 ZR-NB-95 19-Nov-24 OFFSITE GROUNDWATER 0.286 I-131 19-Nov-24 OFFSITE GROUNDWATER 3.2 CS-134 19-Nov-24 OFFSITE GROUNDWATER 4.1 CS-137 19-Nov-24 OFFSITE GROUNDWATER 3.0 BA-LA-140 19-Nov-24 OFFSITE GROUNDWATER 185.0 H-3 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 32

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: F-1 Concentration (pCi/Liter) 1.1 MN-54 21-Feb-24 OFFSITE GROUNDWATER 1.1 CO-58 21-Feb-24 OFFSITE GROUNDWATER 1.4 FE-59 21-Feb-24 OFFSITE GROUNDWATER 1.3 CO-60 21-Feb-24 OFFSITE GROUNDWATER 2.6 ZN-65 21-Feb-24 OFFSITE GROUNDWATER 1.5 ZR-NB-95 21-Feb-24 OFFSITE GROUNDWATER 0.278 I-131 21-Feb-24 OFFSITE GROUNDWATER 1.2 CS-134 21-Feb-24 OFFSITE GROUNDWATER 1.4 CS-137 21-Feb-24 OFFSITE GROUNDWATER 1.8 BA-LA-140 21-Feb-24 OFFSITE GROUNDWATER 179.0 H-3 21-Feb-24 OFFSITE GROUNDWATER 1.2 MN-54 15-May-24 OFFSITE GROUNDWATER 0.7 CO-58 15-May-24 OFFSITE GROUNDWATER 1.5 FE-59 15-May-24 OFFSITE GROUNDWATER 1.2 CO-60 15-May-24 OFFSITE GROUNDWATER 2.1 ZN-65 15-May-24 OFFSITE GROUNDWATER 1.4 ZR-NB-95 15-May-24 OFFSITE GROUNDWATER 0.449 I-131 15-May-24 OFFSITE GROUNDWATER 1.1 CS-134 15-May-24 OFFSITE GROUNDWATER 1.6 CS-137 15-May-24 OFFSITE GROUNDWATER 1.6 BA-LA-140 15-May-24 OFFSITE GROUNDWATER 188.0 H-3 15-May-24 OFFSITE GROUNDWATER 2.9 MN-54 13-Aug-24 OFFSITE GROUNDWATER 2.0 CO-58 13-Aug-24 OFFSITE GROUNDWATER 4.5 FE-59 13-Aug-24 OFFSITE GROUNDWATER 3.0 CO-60 13-Aug-24 OFFSITE GROUNDWATER 4.8 ZN-65 13-Aug-24 OFFSITE GROUNDWATER 2.6 ZR-NB-95 13-Aug-24 OFFSITE GROUNDWATER 0.288 I-131 13-Aug-24 OFFSITE GROUNDWATER 3.0 CS-134 13-Aug-24 OFFSITE GROUNDWATER 4.1 CS-137 13-Aug-24 OFFSITE GROUNDWATER 1.4 BA-LA-140 13-Aug-24 OFFSITE GROUNDWATER 181.0 H-3 13-Aug-24 OFFSITE GROUNDWATER 1.2 MN-54 19-Nov-24 OFFSITE GROUNDWATER 1.1 CO-58 19-Nov-24 OFFSITE GROUNDWATER 3.1 FE-59 19-Nov-24 OFFSITE GROUNDWATER 1.6 CO-60 19-Nov-24 OFFSITE GROUNDWATER 3.1 ZN-65 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 33

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: F-1 Concentration (pCi/Liter) 1.5 ZR-NB-95 19-Nov-24 OFFSITE GROUNDWATER 0.422 I-131 19-Nov-24 OFFSITE GROUNDWATER 1.6 CS-134 19-Nov-24 OFFSITE GROUNDWATER 2.0 CS-137 19-Nov-24 OFFSITE GROUNDWATER 0.8 BA-LA-140 19-Nov-24 OFFSITE GROUNDWATER 185.0 H-3 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 34

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: G-2 Concentration (pCi/Liter) 2.7 MN-54 21-Feb-24 OFFSITE GROUNDWATER 2.2 CO-58 21-Feb-24 OFFSITE GROUNDWATER 3.7 FE-59 21-Feb-24 OFFSITE GROUNDWATER 3.7 CO-60 21-Feb-24 OFFSITE GROUNDWATER 4.7 ZN-65 21-Feb-24 OFFSITE GROUNDWATER 3.7 ZR-NB-95 21-Feb-24 OFFSITE GROUNDWATER 0.273 I-131 21-Feb-24 OFFSITE GROUNDWATER 2.9 CS-134 21-Feb-24 OFFSITE GROUNDWATER 3.6 CS-137 21-Feb-24 OFFSITE GROUNDWATER 2.4 BA-LA-140 21-Feb-24 OFFSITE GROUNDWATER 179.0 H-3 21-Feb-24 OFFSITE GROUNDWATER 3.0 MN-54 15-May-24 OFFSITE GROUNDWATER 2.7 CO-58 15-May-24 OFFSITE GROUNDWATER 4.8 FE-59 15-May-24 OFFSITE GROUNDWATER 3.5 CO-60 15-May-24 OFFSITE GROUNDWATER 5.7 ZN-65 15-May-24 OFFSITE GROUNDWATER 2.4 ZR-NB-95 15-May-24 OFFSITE GROUNDWATER 0.401 I-131 15-May-24 OFFSITE GROUNDWATER 2.8 CS-134 15-May-24 OFFSITE GROUNDWATER 3.8 CS-137 15-May-24 OFFSITE GROUNDWATER 2.3 BA-LA-140 15-May-24 OFFSITE GROUNDWATER 188.0 H-3 15-May-24 OFFSITE GROUNDWATER 6.4 MN-54 13-Aug-24 OFFSITE GROUNDWATER 5.8 CO-58 13-Aug-24 OFFSITE GROUNDWATER 10.2 FE-59 13-Aug-24 OFFSITE GROUNDWATER 5.1 CO-60 13-Aug-24 OFFSITE GROUNDWATER 4.9 ZN-65 13-Aug-24 OFFSITE GROUNDWATER 3.5 ZR-NB-95 13-Aug-24 OFFSITE GROUNDWATER 0.162 I-131 13-Aug-24 OFFSITE GROUNDWATER 6.0 CS-134 13-Aug-24 OFFSITE GROUNDWATER 6.2 CS-137 13-Aug-24 OFFSITE GROUNDWATER 8.3 BA-LA-140 13-Aug-24 OFFSITE GROUNDWATER 181.0 H-3 13-Aug-24 OFFSITE GROUNDWATER 1.6 MN-54 19-Nov-24 OFFSITE GROUNDWATER 1.5 CO-58 19-Nov-24 OFFSITE GROUNDWATER 2.0 FE-59 19-Nov-24 OFFSITE GROUNDWATER 1.3 CO-60 19-Nov-24 OFFSITE GROUNDWATER 2.7 ZN-65 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 35

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: G-2 Concentration (pCi/Liter) 1.8 ZR-NB-95 19-Nov-24 OFFSITE GROUNDWATER 0.318 I-131 19-Nov-24 OFFSITE GROUNDWATER 1.5 CS-134 19-Nov-24 OFFSITE GROUNDWATER 1.5 CS-137 19-Nov-24 OFFSITE GROUNDWATER 1.2 BA-LA-140 19-Nov-24 OFFSITE GROUNDWATER 185.0 H-3 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 36

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: J-1 Concentration (pCi/Liter) 1.1 MN-54 21-Feb-24 OFFSITE GROUNDWATER 1.0 CO-58 21-Feb-24 OFFSITE GROUNDWATER 2.2 FE-59 21-Feb-24 OFFSITE GROUNDWATER 1.2 CO-60 21-Feb-24 OFFSITE GROUNDWATER 2.3 ZN-65 21-Feb-24 OFFSITE GROUNDWATER 1.2 ZR-NB-95 21-Feb-24 OFFSITE GROUNDWATER 0.496 I-131 21-Feb-24 OFFSITE GROUNDWATER 1.1 CS-134 21-Feb-24 OFFSITE GROUNDWATER 1.1 CS-137 21-Feb-24 OFFSITE GROUNDWATER 1.3 BA-LA-140 21-Feb-24 OFFSITE GROUNDWATER 179.0 H-3 21-Feb-24 OFFSITE GROUNDWATER 2.0 MN-54 15-May-24 OFFSITE GROUNDWATER 2.4 CO-58 15-May-24 OFFSITE GROUNDWATER 3.4 FE-59 15-May-24 OFFSITE GROUNDWATER 2.3 CO-60 15-May-24 OFFSITE GROUNDWATER 4.5 ZN-65 15-May-24 OFFSITE GROUNDWATER 3.0 ZR-NB-95 15-May-24 OFFSITE GROUNDWATER 0.388 I-131 15-May-24 OFFSITE GROUNDWATER 2.4 CS-134 15-May-24 OFFSITE GROUNDWATER 1.9 CS-137 15-May-24 OFFSITE GROUNDWATER 0.9 BA-LA-140 15-May-24 OFFSITE GROUNDWATER 188.0 H-3 15-May-24 OFFSITE GROUNDWATER 1.2 MN-54 13-Aug-24 OFFSITE GROUNDWATER 1.8 CO-58 13-Aug-24 OFFSITE GROUNDWATER 3.2 FE-59 13-Aug-24 OFFSITE GROUNDWATER 2.0 CO-60 13-Aug-24 OFFSITE GROUNDWATER 4.2 ZN-65 13-Aug-24 OFFSITE GROUNDWATER 2.5 ZR-NB-95 13-Aug-24 OFFSITE GROUNDWATER 0.161 I-131 13-Aug-24 OFFSITE GROUNDWATER 2.3 CS-134 13-Aug-24 OFFSITE GROUNDWATER 3.1 CS-137 13-Aug-24 OFFSITE GROUNDWATER 3.6 BA-LA-140 13-Aug-24 OFFSITE GROUNDWATER 181.0 H-3 13-Aug-24 OFFSITE GROUNDWATER 1.1 MN-54 19-Nov-24 OFFSITE GROUNDWATER 0.7 CO-58 19-Nov-24 OFFSITE GROUNDWATER 2.4 FE-59 19-Nov-24 OFFSITE GROUNDWATER 1.5 CO-60 19-Nov-24 OFFSITE GROUNDWATER 2.7 ZN-65 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 37

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: J-1 Concentration (pCi/Liter) 1.6 ZR-NB-95 19-Nov-24 OFFSITE GROUNDWATER 0.255 I-131 19-Nov-24 OFFSITE GROUNDWATER 1.3 CS-134 19-Nov-24 OFFSITE GROUNDWATER 1.7 CS-137 19-Nov-24 OFFSITE GROUNDWATER 0.7 BA-LA-140 19-Nov-24 OFFSITE GROUNDWATER 185.0 H-3 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 38

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: J-2 Concentration (pCi/Liter) 2.5 MN-54 21-Feb-24 OFFISTE GROUNDEWATER 2.2 CO-58 21-Feb-24 OFFISTE GROUNDEWATER 2.0 FE-59 21-Feb-24 OFFISTE GROUNDEWATER 1.9 CO-60 21-Feb-24 OFFISTE GROUNDEWATER 5.9 ZN-65 21-Feb-24 OFFISTE GROUNDEWATER 2.8 ZR-NB-95 21-Feb-24 OFFISTE GROUNDEWATER 0.271 I-131 21-Feb-24 OFFISTE GROUNDEWATER 2.5 CS-134 21-Feb-24 OFFISTE GROUNDEWATER 2.1 CS-137 21-Feb-24 OFFISTE GROUNDEWATER 2.7 BA-LA-140 21-Feb-24 OFFISTE GROUNDEWATER 179.0 H-3 21-Feb-24 OFFISTE GROUNDEWATER 3.9 MN-54 15-May-24 OFFSITE GROUNDWATER 2.2 CO-58 15-May-24 OFFSITE GROUNDWATER 4.6 FE-59 15-May-24 OFFSITE GROUNDWATER 4.1 CO-60 15-May-24 OFFSITE GROUNDWATER 8.6 ZN-65 15-May-24 OFFSITE GROUNDWATER 5.4 ZR-NB-95 15-May-24 OFFSITE GROUNDWATER 0.417 I-131 15-May-24 OFFSITE GROUNDWATER 5.6 CS-134 15-May-24 OFFSITE GROUNDWATER 5.6 CS-137 15-May-24 OFFSITE GROUNDWATER 5.8 BA-LA-140 15-May-24 OFFSITE GROUNDWATER 188.0 H-3 15-May-24 OFFSITE GROUNDWATER 2.6 MN-54 13-Aug-24 OFFSITE GROUNDWATER 1.5 CO-58 13-Aug-24 OFFSITE GROUNDWATER 3.2 FE-59 13-Aug-24 OFFSITE GROUNDWATER 2.1 CO-60 13-Aug-24 OFFSITE GROUNDWATER 4.1 ZN-65 13-Aug-24 OFFSITE GROUNDWATER 2.5 ZR-NB-95 13-Aug-24 OFFSITE GROUNDWATER 0.149 I-131 13-Aug-24 OFFSITE GROUNDWATER 2.7 CS-134 13-Aug-24 OFFSITE GROUNDWATER 2.8 CS-137 13-Aug-24 OFFSITE GROUNDWATER 2.3 BA-LA-140 13-Aug-24 OFFSITE GROUNDWATER 181.0 H-3 13-Aug-24 OFFSITE GROUNDWATER 1.5 MN-54 19-Nov-24 OFFSITE GROUNDWATER 1.3 CO-58 19-Nov-24 OFFSITE GROUNDWATER 2.0 FE-59 19-Nov-24 OFFSITE GROUNDWATER 1.4 CO-60 19-Nov-24 OFFSITE GROUNDWATER 2.6 ZN-65 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 39

Exposure Pathway - Waterborne Ground Water Sample Description Collection Date Nuclide Duplicate Analysis Location: J-2 Concentration (pCi/Liter) 1.6 ZR-NB-95 19-Nov-24 OFFSITE GROUNDWATER 0.47 I-131 19-Nov-24 OFFSITE GROUNDWATER 1.3 CS-134 19-Nov-24 OFFSITE GROUNDWATER 1.7 CS-137 19-Nov-24 OFFSITE GROUNDWATER 2.4 BA-LA-140 19-Nov-24 OFFSITE GROUNDWATER 185.0 H-3 19-Nov-24 OFFSITE GROUNDWATER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 40

Location: BW-15 Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 03-Jan-24 1.0 MN-54 03-Jan-24 1.2 CO-58 03-Jan-24 2.5 FE-59 03-Jan-24 2.3 CO-60 03-Jan-24 2.2 ZN-65 03-Jan-24 1.5 ZR-NB-95 03-Jan-24 0.368 I-131 03-Jan-24 1.2 CS-134 03-Jan-24 2.1 CS-137 03-Jan-24 1.4 BA-LA-140 03-Jan-24 0.716

+/-

2.914 GROSS BETA 02-Apr-24 4.2 MN-54 02-Apr-24 3.7 CO-58 02-Apr-24 8.5 FE-59 02-Apr-24 4.7 CO-60 02-Apr-24 4.8 ZN-65 02-Apr-24 2.9 ZR-NB-95 02-Apr-24 0.388 I-131 02-Apr-24 5.2 CS-134 02-Apr-24 4.9 CS-137 02-Apr-24 3.0 BA-LA-140 02-Apr-24 0.601

+/-

1.696 GROSS BETA 01-May-24 1.8 MN-54 01-May-24 2.0 CO-58 01-May-24 6.8 FE-59 01-May-24 2.2 CO-60 01-May-24 5.1 ZN-65 01-May-24 3.2 ZR-NB-95 01-May-24 0.378 I-131 01-May-24 3.1 CS-134 01-May-24 2.7 CS-137 01-May-24 1.7 BA-LA-140 01-May-24 0.595

+/-

1.867 GROSS BETA 04-Jun-24 5.4 MN-54 04-Jun-24 3.7 CO-58 04-Jun-24 10.5 FE-59 04-Jun-24 4.2 CO-60 04-Jun-24 7.5 ZN-65 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 41

Location: BW-15 Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 04-Jun-24 4.6 ZR-NB-95 04-Jun-24 0.395 I-131 04-Jun-24 5.1 CS-134 04-Jun-24 5.7 CS-137 04-Jun-24 5.1 BA-LA-140 04-Jun-24 0.582

+/-

1.589 GROSS BETA 03-Jul-24 1.8 MN-54 03-Jul-24 1.8 MN-54 03-Jul-24 2.3 CO-58 03-Jul-24 2.3 CO-58 03-Jul-24 3.3 FE-59 03-Jul-24 3.3 FE-59 03-Jul-24 2.6 CO-60 03-Jul-24 2.6 CO-60 03-Jul-24 3.4 ZN-65 03-Jul-24 3.4 ZN-65 03-Jul-24 1.8 ZR-NB-95 03-Jul-24 1.8 ZR-NB-95 03-Jul-24 0.313 I-131 03-Jul-24 0.313 I-131 03-Jul-24 2.0 CS-134 03-Jul-24 2.0 CS-134 03-Jul-24 2.6 CS-137 03-Jul-24 2.6 CS-137 03-Jul-24 2.2 BA-LA-140 03-Jul-24 2.2 BA-LA-140 03-Jul-24 0.654

+/-

2.414 GROSS BETA 03-Jul-24 0.654

+/-

2.414 GROSS BETA 01-Aug-24 1.4 MN-54 01-Aug-24 1.6 CO-58 01-Aug-24 2.5 FE-59 01-Aug-24 2.1 CO-60 01-Aug-24 3.0 ZN-65 01-Aug-24 1.6 ZR-NB-95 01-Aug-24 0.26 I-131 01-Aug-24 1.5 CS-134 01-Aug-24 2.0 CS-137 01-Aug-24 1.0 BA-LA-140 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 42

Location: BW-15 Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 01-Aug-24 0.63

+/-

2.587 GROSS BETA 04-Sep-24 3.0 MN-54 04-Sep-24 3.3 CO-58 04-Sep-24 3.8 FE-59 04-Sep-24 3.6 CO-60 04-Sep-24 4.9 ZN-65 04-Sep-24 2.6 ZR-NB-95 04-Sep-24 0.457 I-131 04-Sep-24 3.6 CS-134 04-Sep-24 4.4 CS-137 04-Sep-24 1.3 BA-LA-140 04-Sep-24 0.984

+/-

4.258 GROSS BETA 03-Oct-24 2.6 MN-54 03-Oct-24 2.4 CO-58 03-Oct-24 5.1 FE-59 03-Oct-24 2.9 CO-60 03-Oct-24 4.4 ZN-65 03-Oct-24 2.8 ZR-NB-95 03-Oct-24 0.355 I-131 03-Oct-24 2.7 CS-134 03-Oct-24 2.2 CS-137 03-Oct-24 2.4 BA-LA-140 03-Oct-24 0.79

+/-

1.820 GROSS BETA 04-Nov-24 3.9 MN-54 04-Nov-24 2.8 CO-58 04-Nov-24 3.1 FE-59 04-Nov-24 5.0 CO-60 04-Nov-24 8.0 ZN-65 04-Nov-24 4.2 ZR-NB-95 04-Nov-24 0.468 I-131 04-Nov-24 3.6 CS-134 04-Nov-24 5.6 CS-137 04-Nov-24 1.8 BA-LA-140 04-Nov-24 0.622

+/-

2.081 GROSS BETA 03-Dec-24 2.1 MN-54 03-Dec-24 2.9 CO-58 03-Dec-24 4.6 FE-59 03-Dec-24 3.1 CO-60 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 43

Location: BW-15 Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 03-Dec-24 4.6 ZN-65 03-Dec-24 2.9 ZR-NB-95 03-Dec-24 0.455 I-131 03-Dec-24 3.1 CS-134 03-Dec-24 4.0 CS-137 03-Dec-24 1.7 BA-LA-140 03-Dec-24 0.675

+/-

2.534 GROSS BETA 05-Feb-25 0.5 MN-54 05-Feb-25 0.8 CO-58 05-Feb-25 1.3 FE-59 05-Feb-25 1.0 CO-60 05-Feb-25 1.6 ZN-65 05-Feb-25 0.9 ZR-NB-95 05-Feb-25 0.29 I-131 05-Feb-25 0.8 CS-134 05-Feb-25 0.9 CS-137 05-Feb-25 1.1 BA-LA-140 05-Feb-25 0.658

+/-

2.565 GROSS BETA 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 44

Location: IO-DW Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 03-Jan-24 2.7 MN-54 03-Jan-24 2.1 CO-58 03-Jan-24 5.3 FE-59 03-Jan-24 2.2 CO-60 03-Jan-24 4.1 ZN-65 03-Jan-24 2.7 ZR-NB-95 03-Jan-24 0.441 I-131 03-Jan-24 2.3 CS-134 03-Jan-24 1.9 CS-137 03-Jan-24 2.6 BA-LA-140 03-Jan-24 0.723

+/-

2.695 GROSS BETA 02-Apr-24 2.3 MN-54 02-Apr-24 2.1 CO-58 02-Apr-24 4.3 FE-59 02-Apr-24 2.1 CO-60 02-Apr-24 4.0 ZN-65 02-Apr-24 2.2 ZR-NB-95 02-Apr-24 0.287 I-131 02-Apr-24 2.2 CS-134 02-Apr-24 1.3 CS-137 02-Apr-24 1.9 BA-LA-140 02-Apr-24 0.667

+/-

2.266 GROSS BETA 01-May-24 2.4 MN-54 01-May-24 3.1 CO-58 01-May-24 4.4 FE-59 01-May-24 1.6 CO-60 01-May-24 6.1 ZN-65 01-May-24 3.9 ZR-NB-95 01-May-24 0.229 I-131 01-May-24 2.9 CS-134 01-May-24 3.7 CS-137 01-May-24 3.8 BA-LA-140 01-May-24 0.597

+/-

1.819 GROSS BETA 04-Jun-24 2.8 MN-54 04-Jun-24 2.6 CO-58 04-Jun-24 4.5 FE-59 04-Jun-24 2.3 CO-60 04-Jun-24 5.4 ZN-65 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 45

Location: IO-DW Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 04-Jun-24 2.2 ZR-NB-95 04-Jun-24 0.338 I-131 04-Jun-24 2.7 CS-134 04-Jun-24 2.1 CS-137 04-Jun-24 2.3 BA-LA-140 04-Jun-24 0.611

+/-

2.108 GROSS BETA 03-Jul-24 3.1 MN-54 03-Jul-24 3.1 MN-54 03-Jul-24 1.6 CO-58 03-Jul-24 1.6 CO-58 03-Jul-24 4.3 FE-59 03-Jul-24 4.3 FE-59 03-Jul-24 2.8 CO-60 03-Jul-24 2.8 CO-60 03-Jul-24 5.8 ZN-65 03-Jul-24 5.8 ZN-65 03-Jul-24 3.1 ZR-NB-95 03-Jul-24 3.1 ZR-NB-95 03-Jul-24 0.312 I-131 03-Jul-24 0.312 I-131 03-Jul-24 3.5 CS-134 03-Jul-24 3.5 CS-134 03-Jul-24 2.1 CS-137 03-Jul-24 2.1 CS-137 03-Jul-24 1.4 BA-LA-140 03-Jul-24 1.4 BA-LA-140 03-Jul-24 0.638

+/-

1.967 GROSS BETA 03-Jul-24 0.638

+/-

1.967 GROSS BETA 01-Aug-24 2.1 MN-54 01-Aug-24 1.8 CO-58 01-Aug-24 4.6 FE-59 01-Aug-24 2.1 CO-60 01-Aug-24 4.6 ZN-65 01-Aug-24 3.1 ZR-NB-95 01-Aug-24 0.314 I-131 01-Aug-24 2.7 CS-134 01-Aug-24 2.8 CS-137 01-Aug-24 2.9 BA-LA-140 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 46

Location: IO-DW Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 01-Aug-24 0.68

+/-

2.624 GROSS BETA 04-Sep-24 5.1 MN-54 04-Sep-24 5.7 CO-58 04-Sep-24 5.5 FE-59 04-Sep-24 4.3 CO-60 04-Sep-24 10.8 ZN-65 04-Sep-24 5.4 ZR-NB-95 04-Sep-24 0.355 I-131 04-Sep-24 6.6 CS-134 04-Sep-24 6.8 CS-137 04-Sep-24 5.7 BA-LA-140 04-Sep-24 0.991

+/-

3.954 GROSS BETA 03-Oct-24 2.6 MN-54 03-Oct-24 2.0 CO-58 03-Oct-24 4.7 FE-59 03-Oct-24 2.1 CO-60 03-Oct-24 7.8 ZN-65 03-Oct-24 3.7 ZR-NB-95 03-Oct-24 0.235 I-131 03-Oct-24 2.9 CS-134 03-Oct-24 3.4 CS-137 03-Oct-24 3.2 BA-LA-140 03-Oct-24 1.388 GROSS BETA 04-Nov-24 3.8 MN-54 04-Nov-24 3.8 CO-58 04-Nov-24 6.1 FE-59 04-Nov-24 5.2 CO-60 04-Nov-24 6.7 ZN-65 04-Nov-24 6.4 ZR-NB-95 04-Nov-24 0.471 I-131 04-Nov-24 7.5 CS-134 04-Nov-24 8.0 CS-137 04-Nov-24 5.2 BA-LA-140 04-Nov-24 0.768

+/-

3.369 GROSS BETA 03-Dec-24 2.4 MN-54 03-Dec-24 2.1 CO-58 03-Dec-24 3.5 FE-59 03-Dec-24 2.2 CO-60 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 47

Location: IO-DW Exposure Pathway - Waterborne Drinking Water Collection Date Nuclide Concentration (pCi/Liter)

Duplicate Analysis 03-Dec-24 5.0 ZN-65 03-Dec-24 2.9 ZR-NB-95 03-Dec-24 0.349 I-131 03-Dec-24 2.5 CS-134 03-Dec-24 3.0 CS-137 03-Dec-24 3.1 BA-LA-140 03-Dec-24 0.644

+/-

2.416 GROSS BETA 05-Feb-25 0.6 MN-54 05-Feb-25 1.2 CO-58 05-Feb-25 0.9 FE-59 05-Feb-25 1.0 CO-60 05-Feb-25 2.2 ZN-65 05-Feb-25 1.2 ZR-NB-95 05-Feb-25 0.259 I-131 05-Feb-25 1.0 CS-134 05-Feb-25 1.4 CS-137 05-Feb-25 1.3 BA-LA-140 05-Feb-25 0.724

+/-

3.019 GROSS BETA 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 48

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location: BW-15 Duplicate Analysis Concentration (pCi/Liter)

Nuclide Collection Date 03-Jan-24 H-3 169 02-Apr-24 H-3 171 03-Jul-24 H-3 183 03-Oct-24 H-3 177 09-Jan-25 H-3 181 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 49

Exposure Pathway - Waterborne Drinking Water Quarterly Tritium Analysis Location: IO-DW Duplicate Analysis Concentration (pCi/Liter)

Nuclide Collection Date 03-Jan-24 H-3 169 02-Apr-24 H-3 171 03-Jul-24 H-3 183 03-Oct-24 H-3 177 09-Jan-25 H-3 181 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 50

Exposure Pathway - Waterborne Shoreline Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: DC Concentration (pCi/Kg Dry) 372.2

+/-

4,968.3 K-40 23-May-24 SHORELINE SEDIMENTS 372.2

+/-

4,968.3 K-40 23-May-24 SHORELINE SEDIMENTS 16.9 MN-54 23-May-24 SHORELINE SEDIMENTS 16.9 MN-54 23-May-24 SHORELINE SEDIMENTS 12.0 CO-58 23-May-24 SHORELINE SEDIMENTS 12.0 CO-58 23-May-24 SHORELINE SEDIMENTS 25.0 FE-59 23-May-24 SHORELINE SEDIMENTS 25.0 FE-59 23-May-24 SHORELINE SEDIMENTS 18.5 CO-60 23-May-24 SHORELINE SEDIMENTS 18.5 CO-60 23-May-24 SHORELINE SEDIMENTS 43.1 ZN-65 23-May-24 SHORELINE SEDIMENTS 43.1 ZN-65 23-May-24 SHORELINE SEDIMENTS 13.6 CS-134 23-May-24 SHORELINE SEDIMENTS 13.6 CS-134 23-May-24 SHORELINE SEDIMENTS 17.8 CS-137 23-May-24 SHORELINE SEDIMENTS 17.8 CS-137 23-May-24 SHORELINE SEDIMENTS 53.7 SR-89 23-May-24 SHORELINE SEDIMENTS 152.8 NI-63 23-May-24 SHORELINE SEDIMENTS 4,784.0 FE-55 23-May-24 SHORELINE SEDIMENTS 40.3 SR-90 23-May-24 SHORELINE SEDIMENTS 53.7 SR-89 23-May-24 SHORELINE SEDIMENTS 152.8 NI-63 23-May-24 SHORELINE SEDIMENTS 4,784.0 FE-55 23-May-24 SHORELINE SEDIMENTS 40.3 SR-90 23-May-24 SHORELINE SEDIMENTS Duplicate 294.2

+/-

6,544.0 K-40 17-Sep-24 SHORELINE SEDIMENTS 204.2

+/-

6,193.4 K-40 17-Sep-24 SHORELINE SEDIMENTS 9.9 MN-54 17-Sep-24 SHORELINE SEDIMENTS Duplicate 11.7 MN-54 17-Sep-24 SHORELINE SEDIMENTS 9.8 CO-58 17-Sep-24 SHORELINE SEDIMENTS Duplicate 13.4 CO-58 17-Sep-24 SHORELINE SEDIMENTS 22.8 FE-59 17-Sep-24 SHORELINE SEDIMENTS Duplicate 37.2 FE-59 17-Sep-24 SHORELINE SEDIMENTS 8.9 CO-60 17-Sep-24 SHORELINE SEDIMENTS Duplicate 5.1 CO-60 17-Sep-24 SHORELINE SEDIMENTS 19.5 ZN-65 17-Sep-24 SHORELINE SEDIMENTS Duplicate 26.0 ZN-65 17-Sep-24 SHORELINE SEDIMENTS 7.9 CS-134 17-Sep-24 SHORELINE SEDIMENTS Duplicate 9.8 CS-134 17-Sep-24 SHORELINE SEDIMENTS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 51

Exposure Pathway - Waterborne Shoreline Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: DC Concentration (pCi/Kg Dry) 6.0

+/-

10.0 CS-137 17-Sep-24 SHORELINE SEDIMENTS Duplicate 10.1 CS-137 17-Sep-24 SHORELINE SEDIMENTS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 52

Exposure Pathway - Waterborne Shoreline Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: EEA Concentration (pCi/Kg Dry) 361.4

+/-

12,960.0 K-40 25-Nov-24 SHORELINE SEDIMENT 15.1 MN-54 25-Nov-24 SHORELINE SEDIMENT 22.2 CO-58 25-Nov-24 SHORELINE SEDIMENT 40.3 FE-59 25-Nov-24 SHORELINE SEDIMENT 10.6 CO-60 25-Nov-24 SHORELINE SEDIMENT 41.0 ZN-65 25-Nov-24 SHORELINE SEDIMENT 14.7 CS-134 25-Nov-24 SHORELINE SEDIMENT 14.8 CS-137 25-Nov-24 SHORELINE SEDIMENT 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 53

Exposure Pathway - Waterborne Shoreline Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Kg Dry) 211.5

+/-

8,056.2 K-40 23-May-24 SHORELINE SEDIMENTS 211.5

+/-

8,056.2 K-40 23-May-24 SHORELINE SEDIMENTS 211.5

+/-

8,056.2 K-40 23-May-24 SHORELINE SEDIMENTS 211.5

+/-

8,056.2 K-40 23-May-24 SHORELINE SEDIMENTS 9.3 MN-54 23-May-24 SHORELINE SEDIMENTS 9.3 MN-54 23-May-24 SHORELINE SEDIMENTS 9.3 MN-54 23-May-24 SHORELINE SEDIMENTS 9.3 MN-54 23-May-24 SHORELINE SEDIMENTS 10.1 CO-58 23-May-24 SHORELINE SEDIMENTS 10.1 CO-58 23-May-24 SHORELINE SEDIMENTS 10.1 CO-58 23-May-24 SHORELINE SEDIMENTS 10.1 CO-58 23-May-24 SHORELINE SEDIMENTS 18.0 FE-59 23-May-24 SHORELINE SEDIMENTS 18.0 FE-59 23-May-24 SHORELINE SEDIMENTS 18.0 FE-59 23-May-24 SHORELINE SEDIMENTS 18.0 FE-59 23-May-24 SHORELINE SEDIMENTS 8.7 CO-60 23-May-24 SHORELINE SEDIMENTS 8.7 CO-60 23-May-24 SHORELINE SEDIMENTS 8.7 CO-60 23-May-24 SHORELINE SEDIMENTS 8.7 CO-60 23-May-24 SHORELINE SEDIMENTS 16.3 ZN-65 23-May-24 SHORELINE SEDIMENTS 16.3 ZN-65 23-May-24 SHORELINE SEDIMENTS 16.3 ZN-65 23-May-24 SHORELINE SEDIMENTS 16.3 ZN-65 23-May-24 SHORELINE SEDIMENTS 7.0 CS-134 23-May-24 SHORELINE SEDIMENTS 7.0 CS-134 23-May-24 SHORELINE SEDIMENTS 7.0 CS-134 23-May-24 SHORELINE SEDIMENTS 7.0 CS-134 23-May-24 SHORELINE SEDIMENTS 6.7

+/-

33.9 CS-137 23-May-24 SHORELINE SEDIMENTS 6.7

+/-

33.9 CS-137 23-May-24 SHORELINE SEDIMENTS 6.7

+/-

33.9 CS-137 23-May-24 SHORELINE SEDIMENTS 6.7

+/-

33.9 CS-137 23-May-24 SHORELINE SEDIMENTS 90.7

+/-

10,955.0 K-40 12-Nov-24 SHORELINE SEDIMENT 8.5 MN-54 12-Nov-24 SHORELINE SEDIMENT 13.5 CO-58 12-Nov-24 SHORELINE SEDIMENT 31.0 FE-59 12-Nov-24 SHORELINE SEDIMENT 6.0 CO-60 12-Nov-24 SHORELINE SEDIMENT 17.3 ZN-65 12-Nov-24 SHORELINE SEDIMENT 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 54

Exposure Pathway - Waterborne Shoreline Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Kg Dry) 6.9 CS-134 12-Nov-24 SHORELINE SEDIMENT 7.8 CS-137 12-Nov-24 SHORELINE SEDIMENT 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 55

Exposure Pathway - Waterborne Shoreline Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: SC Concentration (pCi/Kg Dry) 241.0

+/-

10,226.0 K-40 30-Aug-24 SHORELINE SEDIMENTS 10.3 MN-54 30-Aug-24 SHORELINE SEDIMENTS 13.5 CO-58 30-Aug-24 SHORELINE SEDIMENTS 27.6 FE-59 30-Aug-24 SHORELINE SEDIMENTS 5.0 CO-60 30-Aug-24 SHORELINE SEDIMENTS 19.6 ZN-65 30-Aug-24 SHORELINE SEDIMENTS 8.2 CS-134 30-Aug-24 SHORELINE SEDIMENTS 6.3

+/-

19.2 CS-137 30-Aug-24 SHORELINE SEDIMENTS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 56

Exposure Pathway - Ingestion Fish Sample Description Collection Date Nuclide Duplicate Analysis Location: CCL Concentration (pCi/Kg Wet) 232.7

+/-

3,699.0 K-40 29-Apr-24 CATFISH 8.3 MN-54 29-Apr-24 CATFISH 10.0 CO-58 29-Apr-24 CATFISH 14.0 FE-59 29-Apr-24 CATFISH 8.0 CO-60 29-Apr-24 CATFISH 18.6 ZN-65 29-Apr-24 CATFISH 19.8 I-131 29-Apr-24 CATFISH 8.0 CS-134 29-Apr-24 CATFISH 8.0 CS-137 29-Apr-24 CATFISH 290.0

+/-

9,886.0 H-3 29-Apr-24 CATFISH 140.8

+/-

3,310.4 K-40 29-Apr-24 COMMON CARP 5.6 MN-54 29-Apr-24 COMMON CARP 6.1 CO-58 29-Apr-24 COMMON CARP 16.1 FE-59 29-Apr-24 COMMON CARP 5.7 CO-60 29-Apr-24 COMMON CARP 13.1 ZN-65 29-Apr-24 COMMON CARP 21.2 I-131 29-Apr-24 COMMON CARP 4.8 CS-134 29-Apr-24 COMMON CARP 5.0 CS-137 29-Apr-24 COMMON CARP 250.0

+/-

7,424.0 H-3 29-Apr-24 COMMON CARP 236.6

+/-

3,048.5 K-40 29-Apr-24 WHITE BASS 8.4 MN-54 29-Apr-24 WHITE BASS 8.7 CO-58 29-Apr-24 WHITE BASS 19.5 FE-59 29-Apr-24 WHITE BASS 9.8 CO-60 29-Apr-24 WHITE BASS 18.2 ZN-65 29-Apr-24 WHITE BASS 25.0 I-131 29-Apr-24 WHITE BASS 7.9 CS-134 29-Apr-24 WHITE BASS 10.1 CS-137 29-Apr-24 WHITE BASS 280.0

+/-

8,997.0 H-3 29-Apr-24 WHITE BASS 309.0

+/-

3,574.0 K-40 06-Nov-24 BLUE CATFISH 7.8 MN-54 06-Nov-24 BLUE CATFISH 7.8 CO-58 06-Nov-24 BLUE CATFISH 27.0 FE-59 06-Nov-24 BLUE CATFISH 8.7 CO-60 06-Nov-24 BLUE CATFISH 35.5 ZN-65 06-Nov-24 BLUE CATFISH 20.4 I-131 06-Nov-24 BLUE CATFISH 13.3 CS-134 06-Nov-24 BLUE CATFISH 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 57

Exposure Pathway - Ingestion Fish Sample Description Collection Date Nuclide Duplicate Analysis Location: CCL Concentration (pCi/Kg Wet) 8.7 CS-137 06-Nov-24 BLUE CATFISH 243.0

+/-

6,807.0 H-3 06-Nov-24 BLUE CATFISH 348.0

+/-

3,222.0 K-40 06-Nov-24 CHANNEL CATIFISH 11.3 MN-54 06-Nov-24 CHANNEL CATIFISH 8.3 CO-58 06-Nov-24 CHANNEL CATIFISH 23.0 FE-59 06-Nov-24 CHANNEL CATIFISH 13.3 CO-60 06-Nov-24 CHANNEL CATIFISH 15.6 ZN-65 06-Nov-24 CHANNEL CATIFISH 22.3 I-131 06-Nov-24 CHANNEL CATIFISH 10.8 CS-134 06-Nov-24 CHANNEL CATIFISH 15.0 CS-137 06-Nov-24 CHANNEL CATIFISH 255.0

+/-

7,312.0 H-3 06-Nov-24 CHANNEL CATIFISH 133.0

+/-

3,085.0 K-40 06-Nov-24 CRAPPIE 4.6 MN-54 06-Nov-24 CRAPPIE 6.1 CO-58 06-Nov-24 CRAPPIE 7.5 FE-59 06-Nov-24 CRAPPIE 5.7 CO-60 06-Nov-24 CRAPPIE 13.4 ZN-65 06-Nov-24 CRAPPIE 15.3 I-131 06-Nov-24 CRAPPIE 4.8 CS-134 06-Nov-24 CRAPPIE 5.8 CS-137 06-Nov-24 CRAPPIE 244.0

+/-

6,861.0 H-3 06-Nov-24 CRAPPIE Duplicate 125.0

+/-

3,062.0 K-40 06-Nov-24 FISH Duplicate 4.8 MN-54 06-Nov-24 FISH Duplicate 5.4 CO-58 06-Nov-24 FISH Duplicate 11.2 FE-59 06-Nov-24 FISH Duplicate 4.8 CO-60 06-Nov-24 FISH Duplicate 12.1 ZN-65 06-Nov-24 FISH Duplicate 11.1 I-131 06-Nov-24 FISH Duplicate 4.8 CS-134 06-Nov-24 FISH Duplicate 5.3 CS-137 06-Nov-24 FISH Duplicate 248.0

+/-

7,250.0 H-3 06-Nov-24 FISH 326.0

+/-

3,376.0 K-40 06-Nov-24 HYBRID-STRIPED BASS 12.5 MN-54 06-Nov-24 HYBRID-STRIPED BASS 9.6 CO-58 06-Nov-24 HYBRID-STRIPED BASS 15.1 FE-59 06-Nov-24 HYBRID-STRIPED BASS 16.8 CO-60 06-Nov-24 HYBRID-STRIPED BASS 28.1 ZN-65 06-Nov-24 HYBRID-STRIPED BASS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 58

Exposure Pathway - Ingestion Fish Sample Description Collection Date Nuclide Duplicate Analysis Location: CCL Concentration (pCi/Kg Wet) 26.8 I-131 06-Nov-24 HYBRID-STRIPED BASS 13.4 CS-134 06-Nov-24 HYBRID-STRIPED BASS 17.6 CS-137 06-Nov-24 HYBRID-STRIPED BASS 220.0

+/-

5,377.0 H-3 06-Nov-24 HYBRID-STRIPED BASS 336.0

+/-

2,812.0 K-40 06-Nov-24 SMALLMOUTH BUFFALO 10.1 MN-54 06-Nov-24 SMALLMOUTH BUFFALO 10.1 CO-58 06-Nov-24 SMALLMOUTH BUFFALO 26.0 FE-59 06-Nov-24 SMALLMOUTH BUFFALO 13.5 CO-60 06-Nov-24 SMALLMOUTH BUFFALO 17.8 ZN-65 06-Nov-24 SMALLMOUTH BUFFALO 32.1 I-131 06-Nov-24 SMALLMOUTH BUFFALO 15.1 CS-134 06-Nov-24 SMALLMOUTH BUFFALO 16.5 CS-137 06-Nov-24 SMALLMOUTH BUFFALO 240.0

+/-

6,924.0 H-3 06-Nov-24 SMALLMOUTH BUFFALO 392.0

+/-

4,104.0 K-40 06-Nov-24 WALLEYE 18.4 MN-54 06-Nov-24 WALLEYE 7.6 CO-58 06-Nov-24 WALLEYE 1.9 FE-59 06-Nov-24 WALLEYE 13.5 CO-60 06-Nov-24 WALLEYE 41.8 ZN-65 06-Nov-24 WALLEYE 29.7 I-131 06-Nov-24 WALLEYE 15.7 CS-134 06-Nov-24 WALLEYE 11.3 CS-137 06-Nov-24 WALLEYE 246.0

+/-

7,301.0 H-3 06-Nov-24 WALLEYE 346.0

+/-

2,377.0 K-40 06-Nov-24 WHITE BASS 12.2 MN-54 06-Nov-24 WHITE BASS 18.2 CO-58 06-Nov-24 WHITE BASS 16.8 FE-59 06-Nov-24 WHITE BASS 17.6 CO-60 06-Nov-24 WHITE BASS 28.8 ZN-65 06-Nov-24 WHITE BASS 26.6 I-131 06-Nov-24 WHITE BASS 17.0 CS-134 06-Nov-24 WHITE BASS 15.8 CS-137 06-Nov-24 WHITE BASS 244.0

+/-

6,950.0 H-3 06-Nov-24 WHITE BASS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 59

Exposure Pathway - Ingestion Fish Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Kg Wet) 143.2

+/-

3,602.8 K-40 18-Jun-24 BIGMOUTH BUFFALO 6.3 MN-54 18-Jun-24 BIGMOUTH BUFFALO 7.8 CO-58 18-Jun-24 BIGMOUTH BUFFALO 18.2 FE-59 18-Jun-24 BIGMOUTH BUFFALO 7.5 CO-60 18-Jun-24 BIGMOUTH BUFFALO 14.3 ZN-65 18-Jun-24 BIGMOUTH BUFFALO 89.2 I-131 18-Jun-24 BIGMOUTH BUFFALO 6.0 CS-134 18-Jun-24 BIGMOUTH BUFFALO 7.4 CS-137 18-Jun-24 BIGMOUTH BUFFALO 136.0 H-3 18-Jun-24 BIGMOUTH BUFFALO 328.0

+/-

3,558.5 K-40 18-Jun-24 CHANNEL CATFISH 13.2 MN-54 18-Jun-24 CHANNEL CATFISH 14.7 CO-58 18-Jun-24 CHANNEL CATFISH 41.8 FE-59 18-Jun-24 CHANNEL CATFISH 17.3 CO-60 18-Jun-24 CHANNEL CATFISH 22.1 ZN-65 18-Jun-24 CHANNEL CATFISH 109.8 I-131 18-Jun-24 CHANNEL CATFISH 12.8 CS-134 18-Jun-24 CHANNEL CATFISH 11.2 CS-137 18-Jun-24 CHANNEL CATFISH 138.0 H-3 18-Jun-24 CHANNEL CATFISH 212.6

+/-

3,101.4 K-40 18-Jun-24 COMMON CARP 5.0 MN-54 18-Jun-24 COMMON CARP 9.3 CO-58 18-Jun-24 COMMON CARP 26.1 FE-59 18-Jun-24 COMMON CARP 6.8 CO-60 18-Jun-24 COMMON CARP 21.1 ZN-65 18-Jun-24 COMMON CARP 97.8 I-131 18-Jun-24 COMMON CARP 7.1 CS-134 18-Jun-24 COMMON CARP 8.5 CS-137 18-Jun-24 COMMON CARP 137.0 H-3 18-Jun-24 COMMON CARP 216.9

+/-

3,470.6 K-40 18-Jun-24 CRAPPIE 6.8 MN-54 18-Jun-24 CRAPPIE 9.8 CO-58 18-Jun-24 CRAPPIE 19.5 FE-59 18-Jun-24 CRAPPIE 6.4 CO-60 18-Jun-24 CRAPPIE 19.3 ZN-65 18-Jun-24 CRAPPIE 98.5 I-131 18-Jun-24 CRAPPIE 8.4 CS-134 18-Jun-24 CRAPPIE 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 60

Exposure Pathway - Ingestion Fish Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Kg Wet) 10.2 CS-137 18-Jun-24 CRAPPIE 80.0

+/-

155.0 H-3 18-Jun-24 CRAPPIE 197.0

+/-

3,412.4 K-40 18-Jun-24 RIVER CARPSUCKER 8.9 MN-54 18-Jun-24 RIVER CARPSUCKER 7.0 CO-58 18-Jun-24 RIVER CARPSUCKER 27.5 FE-59 18-Jun-24 RIVER CARPSUCKER 9.5 CO-60 18-Jun-24 RIVER CARPSUCKER 15.9 ZN-65 18-Jun-24 RIVER CARPSUCKER 114.9 I-131 18-Jun-24 RIVER CARPSUCKER 8.4 CS-134 18-Jun-24 RIVER CARPSUCKER 6.9 CS-137 18-Jun-24 RIVER CARPSUCKER 137.0 H-3 18-Jun-24 RIVER CARPSUCKER 162.0

+/-

3,325.0 K-40 24-Oct-24 BLUE CATFISH 5.6 MN-54 24-Oct-24 BLUE CATFISH 5.7 CO-58 24-Oct-24 BLUE CATFISH 13.0 FE-59 24-Oct-24 BLUE CATFISH 7.3 CO-60 24-Oct-24 BLUE CATFISH 15.8 ZN-65 24-Oct-24 BLUE CATFISH 25.2 I-131 24-Oct-24 BLUE CATFISH 5.3 CS-134 24-Oct-24 BLUE CATFISH 6.8 CS-137 24-Oct-24 BLUE CATFISH 143.0 H-3 24-Oct-24 BLUE CATFISH 153.0

+/-

3,393.0 K-40 24-Oct-24 CHANNEL CATFISH 5.8 MN-54 24-Oct-24 CHANNEL CATFISH 5.2 CO-58 24-Oct-24 CHANNEL CATFISH 11.5 FE-59 24-Oct-24 CHANNEL CATFISH 9.4 CO-60 24-Oct-24 CHANNEL CATFISH 12.6 ZN-65 24-Oct-24 CHANNEL CATFISH 43.0 I-131 24-Oct-24 CHANNEL CATFISH 6.8 CS-134 24-Oct-24 CHANNEL CATFISH 8.8 CS-137 24-Oct-24 CHANNEL CATFISH 141.0 H-3 24-Oct-24 CHANNEL CATFISH 221.0

+/-

3,068.0 K-40 24-Oct-24 CRAPPIE 10.7 MN-54 24-Oct-24 CRAPPIE 5.6 CO-58 24-Oct-24 CRAPPIE 11.7 FE-59 24-Oct-24 CRAPPIE 6.8 CO-60 24-Oct-24 CRAPPIE 17.3 ZN-65 24-Oct-24 CRAPPIE 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 61

Exposure Pathway - Ingestion Fish Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Kg Wet) 49.8 I-131 24-Oct-24 CRAPPIE 9.4 CS-134 24-Oct-24 CRAPPIE 8.1 CS-137 24-Oct-24 CRAPPIE 146.0 H-3 24-Oct-24 CRAPPIE 416.0

+/-

3,519.0 K-40 24-Oct-24 SMALLMOUTH BUFFALO 9.1 MN-54 24-Oct-24 SMALLMOUTH BUFFALO 18.5 CO-58 24-Oct-24 SMALLMOUTH BUFFALO 28.5 FE-59 24-Oct-24 SMALLMOUTH BUFFALO 14.6 CO-60 24-Oct-24 SMALLMOUTH BUFFALO 24.7 ZN-65 24-Oct-24 SMALLMOUTH BUFFALO 78.8 I-131 24-Oct-24 SMALLMOUTH BUFFALO 13.5 CS-134 24-Oct-24 SMALLMOUTH BUFFALO 14.8 CS-137 24-Oct-24 SMALLMOUTH BUFFALO 133.0 H-3 24-Oct-24 SMALLMOUTH BUFFALO 156.0

+/-

3,613.0 K-40 24-Oct-24 WHITE BASS 5.1 MN-54 24-Oct-24 WHITE BASS 8.7 CO-58 24-Oct-24 WHITE BASS 15.4 FE-59 24-Oct-24 WHITE BASS 7.4 CO-60 24-Oct-24 WHITE BASS 12.2 ZN-65 24-Oct-24 WHITE BASS 43.3 I-131 24-Oct-24 WHITE BASS 6.4 CS-134 24-Oct-24 WHITE BASS 6.8 CS-137 24-Oct-24 WHITE BASS 142.0 H-3 24-Oct-24 WHITE BASS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 62

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: A-3 Concentration (pCi/Kg Wet) 225.7

+/-

874.6 BE-7 14-May-24 HORSERADISH LEAVES 513.1

+/-

5,042.1 K-40 14-May-24 HORSERADISH LEAVES 15.5 MN-54 14-May-24 HORSERADISH LEAVES 15.2 CO-58 14-May-24 HORSERADISH LEAVES 31.6 FE-59 14-May-24 HORSERADISH LEAVES 19.7 CO-60 14-May-24 HORSERADISH LEAVES 31.6 ZN-65 14-May-24 HORSERADISH LEAVES 16.7 ZR-NB-95 14-May-24 HORSERADISH LEAVES 25.4 I-131 14-May-24 HORSERADISH LEAVES 17.6 CS-134 14-May-24 HORSERADISH LEAVES 18.7 CS-137 14-May-24 HORSERADISH LEAVES 228.5

+/-

1,625.1 BE-7 20-Jun-24 HORSERADISH LEAVES 454.0

+/-

6,196.6 K-40 20-Jun-24 HORSERADISH LEAVES 9.8 MN-54 20-Jun-24 HORSERADISH LEAVES 7.7 CO-58 20-Jun-24 HORSERADISH LEAVES 18.1 FE-59 20-Jun-24 HORSERADISH LEAVES 19.6 CO-60 20-Jun-24 HORSERADISH LEAVES 34.3 ZN-65 20-Jun-24 HORSERADISH LEAVES 13.0 ZR-NB-95 20-Jun-24 HORSERADISH LEAVES 23.7 I-131 20-Jun-24 HORSERADISH LEAVES 16.0 CS-134 20-Jun-24 HORSERADISH LEAVES 21.4 CS-137 20-Jun-24 HORSERADISH LEAVES 97.8

+/-

951.2 BE-7 17-Jul-24 HORSERADISH LEAVES 229.2

+/-

5,572.2 K-40 17-Jul-24 HORSERADISH LEAVES 7.7 MN-54 17-Jul-24 HORSERADISH LEAVES 9.1 CO-58 17-Jul-24 HORSERADISH LEAVES 15.7 FE-59 17-Jul-24 HORSERADISH LEAVES 9.6 CO-60 17-Jul-24 HORSERADISH LEAVES 15.5 ZN-65 17-Jul-24 HORSERADISH LEAVES 7.1 ZR-NB-95 17-Jul-24 HORSERADISH LEAVES 14.4 I-131 17-Jul-24 HORSERADISH LEAVES 7.6 CS-134 17-Jul-24 HORSERADISH LEAVES 9.0 CS-137 17-Jul-24 HORSERADISH LEAVES 142.6

+/-

1,394.2 BE-7 14-Aug-24 HORSERADISH LEAVES 362.2

+/-

5,245.0 K-40 14-Aug-24 HORSERADISH LEAVES 11.5 MN-54 14-Aug-24 HORSERADISH LEAVES 10.7 CO-58 14-Aug-24 HORSERADISH LEAVES 23.5 FE-59 14-Aug-24 HORSERADISH LEAVES 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 63

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: A-3 Concentration (pCi/Kg Wet) 11.8 CO-60 14-Aug-24 HORSERADISH LEAVES 20.6 ZN-65 14-Aug-24 HORSERADISH LEAVES 7.9 ZR-NB-95 14-Aug-24 HORSERADISH LEAVES 22.0 I-131 14-Aug-24 HORSERADISH LEAVES 11.2 CS-134 14-Aug-24 HORSERADISH LEAVES 13.5 CS-137 14-Aug-24 HORSERADISH LEAVES 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 64

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: B-1 Concentration (pCi/Kg Wet) 325.3

+/-

1,530.1 BE-7 14-May-24 HORSERADISH LEAVES 550.7

+/-

6,258.4 K-40 14-May-24 HORSERADISH LEAVES 19.0 MN-54 14-May-24 HORSERADISH LEAVES 19.1 CO-58 14-May-24 HORSERADISH LEAVES 40.5 FE-59 14-May-24 HORSERADISH LEAVES 27.0 CO-60 14-May-24 HORSERADISH LEAVES 30.2 ZN-65 14-May-24 HORSERADISH LEAVES 20.5 ZR-NB-95 14-May-24 HORSERADISH LEAVES 20.9 I-131 14-May-24 HORSERADISH LEAVES 22.6 CS-134 14-May-24 HORSERADISH LEAVES 33.1 CS-137 14-May-24 HORSERADISH LEAVES 281.5

+/-

1,875.4 BE-7 20-Jun-24 HORSERADISH LEAVES 540.2

+/-

6,443.6 K-40 20-Jun-24 HORSERADISH LEAVES 14.6 MN-54 20-Jun-24 HORSERADISH LEAVES 15.6 CO-58 20-Jun-24 HORSERADISH LEAVES 28.5 FE-59 20-Jun-24 HORSERADISH LEAVES 11.3 CO-60 20-Jun-24 HORSERADISH LEAVES 37.1 ZN-65 20-Jun-24 HORSERADISH LEAVES 13.0 ZR-NB-95 20-Jun-24 HORSERADISH LEAVES 19.5 I-131 20-Jun-24 HORSERADISH LEAVES 17.2 CS-134 20-Jun-24 HORSERADISH LEAVES 22.6 CS-137 20-Jun-24 HORSERADISH LEAVES 90.6

+/-

1,277.0 BE-7 17-Jul-24 HORSERADISH LEAVES 206.4

+/-

6,591.2 K-40 17-Jul-24 HORSERADISH LEAVES 7.4 MN-54 17-Jul-24 HORSERADISH LEAVES 5.8 CO-58 17-Jul-24 HORSERADISH LEAVES 15.4 FE-59 17-Jul-24 HORSERADISH LEAVES 8.2 CO-60 17-Jul-24 HORSERADISH LEAVES 16.9 ZN-65 17-Jul-24 HORSERADISH LEAVES 8.0 ZR-NB-95 17-Jul-24 HORSERADISH LEAVES 10.1 I-131 17-Jul-24 HORSERADISH LEAVES 6.7 CS-134 17-Jul-24 HORSERADISH LEAVES 7.0 CS-137 17-Jul-24 HORSERADISH LEAVES 167.4

+/-

1,013.0 BE-7 14-Aug-24 HORSERADISH LEAVES 334.7

+/-

5,110.8 K-40 14-Aug-24 HORSERADISH LEAVES 11.9 MN-54 14-Aug-24 HORSERADISH LEAVES 13.1 CO-58 14-Aug-24 HORSERADISH LEAVES 26.5 FE-59 14-Aug-24 HORSERADISH LEAVES 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 65

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: B-1 Concentration (pCi/Kg Wet) 15.7 CO-60 14-Aug-24 HORSERADISH LEAVES 31.2 ZN-65 14-Aug-24 HORSERADISH LEAVES 11.5 ZR-NB-95 14-Aug-24 HORSERADISH LEAVES 18.6 I-131 14-Aug-24 HORSERADISH LEAVES 14.5 CS-134 14-Aug-24 HORSERADISH LEAVES 17.2 CS-137 14-Aug-24 HORSERADISH LEAVES 198.1

+/-

581.8 BE-7 11-Sep-24 VEGETATION 555.2

+/-

4,687.3 K-40 11-Sep-24 VEGETATION 16.1 MN-54 11-Sep-24 VEGETATION 14.5 CO-58 11-Sep-24 VEGETATION 32.6 FE-59 11-Sep-24 VEGETATION 20.1 CO-60 11-Sep-24 VEGETATION 30.6 ZN-65 11-Sep-24 VEGETATION 9.9 ZR-NB-95 11-Sep-24 VEGETATION 25.2 I-131 11-Sep-24 VEGETATION 17.7 CS-134 11-Sep-24 VEGETATION 12.5 CS-137 11-Sep-24 VEGETATION 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 66

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: D-2 Concentration (pCi/Kg Wet) 161.8

+/-

730.1 BE-7 14-May-24 HORSERADISH LEAVES 401.0

+/-

5,104.5 K-40 14-May-24 HORSERADISH LEAVES 16.1 MN-54 14-May-24 HORSERADISH LEAVES 11.4 CO-58 14-May-24 HORSERADISH LEAVES 26.9 FE-59 14-May-24 HORSERADISH LEAVES 12.1 CO-60 14-May-24 HORSERADISH LEAVES 21.5 ZN-65 14-May-24 HORSERADISH LEAVES 11.7 ZR-NB-95 14-May-24 HORSERADISH LEAVES 16.1 I-131 14-May-24 HORSERADISH LEAVES 12.9 CS-134 14-May-24 HORSERADISH LEAVES 12.2 CS-137 14-May-24 HORSERADISH LEAVES 189.3

+/-

1,408.7 BE-7 20-Jun-24 HORSERADISH LEAVES 431.1

+/-

5,595.1 K-40 20-Jun-24 HORSERADISH LEAVES 8.5 MN-54 20-Jun-24 HORSERADISH LEAVES 10.6 CO-58 20-Jun-24 HORSERADISH LEAVES 26.4 FE-59 20-Jun-24 HORSERADISH LEAVES 12.1 CO-60 20-Jun-24 HORSERADISH LEAVES 26.2 ZN-65 20-Jun-24 HORSERADISH LEAVES 16.4 ZR-NB-95 20-Jun-24 HORSERADISH LEAVES 16.0 I-131 20-Jun-24 HORSERADISH LEAVES 13.1 CS-134 20-Jun-24 HORSERADISH LEAVES 13.6 CS-137 20-Jun-24 HORSERADISH LEAVES 183.8

+/-

1,464.8 BE-7 17-Jul-24 HORSERADISH LEAVES 340.8

+/-

5,050.6 K-40 17-Jul-24 HORSERADISH LEAVES 11.2 MN-54 17-Jul-24 HORSERADISH LEAVES 8.1 CO-58 17-Jul-24 HORSERADISH LEAVES 18.3 FE-59 17-Jul-24 HORSERADISH LEAVES 9.6 CO-60 17-Jul-24 HORSERADISH LEAVES 13.4 ZN-65 17-Jul-24 HORSERADISH LEAVES 14.7 ZR-NB-95 17-Jul-24 HORSERADISH LEAVES 14.7 I-131 17-Jul-24 HORSERADISH LEAVES 11.1 CS-134 17-Jul-24 HORSERADISH LEAVES 13.1 CS-137 17-Jul-24 HORSERADISH LEAVES 172.8

+/-

698.2 BE-7 11-Sep-24 VEGETATION 568.9

+/-

7,113.8 K-40 11-Sep-24 VEGETATION 17.7 MN-54 11-Sep-24 VEGETATION 15.2 CO-58 11-Sep-24 VEGETATION 40.0 FE-59 11-Sep-24 VEGETATION 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 67

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: D-2 Concentration (pCi/Kg Wet) 18.3 CO-60 11-Sep-24 VEGETATION 45.3 ZN-65 11-Sep-24 VEGETATION 15.6 ZR-NB-95 11-Sep-24 VEGETATION 17.8 I-131 11-Sep-24 VEGETATION 18.4 CS-134 11-Sep-24 VEGETATION 12.1 CS-137 11-Sep-24 VEGETATION 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 68

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: H-2 Concentration (pCi/Kg Wet) 263.0

+/-

1,480.0 BE-7 20-Jun-24 BROADLEAF 381.8

+/-

4,942.0 K-40 20-Jun-24 BROADLEAF 15.7 MN-54 20-Jun-24 BROADLEAF 17.7 CO-58 20-Jun-24 BROADLEAF 44.9 FE-59 20-Jun-24 BROADLEAF 21.7 CO-60 20-Jun-24 BROADLEAF 29.7 ZN-65 20-Jun-24 BROADLEAF 17.0 ZR-NB-95 20-Jun-24 BROADLEAF 29.6 I-131 20-Jun-24 BROADLEAF 17.7 CS-134 20-Jun-24 BROADLEAF 20.0 CS-137 20-Jun-24 BROADLEAF 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 69

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: Q-6 Concentration (pCi/Kg Wet) 271.7

+/-

814.5 BE-7 14-May-24 HORSERADISH LEAVES 606.8

+/-

4,227.2 K-40 14-May-24 HORSERADISH LEAVES 19.4 MN-54 14-May-24 HORSERADISH LEAVES 13.1 CO-58 14-May-24 HORSERADISH LEAVES 36.2 FE-59 14-May-24 HORSERADISH LEAVES 24.8 CO-60 14-May-24 HORSERADISH LEAVES 46.1 ZN-65 14-May-24 HORSERADISH LEAVES 23.0 ZR-NB-95 14-May-24 HORSERADISH LEAVES 23.0 I-131 14-May-24 HORSERADISH LEAVES 29.1 CS-134 14-May-24 HORSERADISH LEAVES 24.0 CS-137 14-May-24 HORSERADISH LEAVES 243.2

+/-

1,131.2 BE-7 20-Jun-24 HORSERADISH LEAVES 528.2

+/-

5,503.7 K-40 20-Jun-24 HORSERADISH LEAVES 20.1 MN-54 20-Jun-24 HORSERADISH LEAVES 21.3 CO-58 20-Jun-24 HORSERADISH LEAVES 23.3 FE-59 20-Jun-24 HORSERADISH LEAVES 22.6 CO-60 20-Jun-24 HORSERADISH LEAVES 24.3 ZN-65 20-Jun-24 HORSERADISH LEAVES 18.0 ZR-NB-95 20-Jun-24 HORSERADISH LEAVES 34.2 I-131 20-Jun-24 HORSERADISH LEAVES 21.3 CS-134 20-Jun-24 HORSERADISH LEAVES 22.1 CS-137 20-Jun-24 HORSERADISH LEAVES 117.7

+/-

928.2 BE-7 17-Jul-24 HORSERADISH LEAVES 325.9

+/-

5,579.7 K-40 17-Jul-24 HORSERADISH LEAVES 8.7 MN-54 17-Jul-24 HORSERADISH LEAVES 8.9 CO-58 17-Jul-24 HORSERADISH LEAVES 22.3 FE-59 17-Jul-24 HORSERADISH LEAVES 10.9 CO-60 17-Jul-24 HORSERADISH LEAVES 30.4 ZN-65 17-Jul-24 HORSERADISH LEAVES 11.2 ZR-NB-95 17-Jul-24 HORSERADISH LEAVES 9.9 I-131 17-Jul-24 HORSERADISH LEAVES 10.9 CS-134 17-Jul-24 HORSERADISH LEAVES 11.5 CS-137 17-Jul-24 HORSERADISH LEAVES 194.7

+/-

1,298.8 BE-7 14-Aug-24 HORSERADISH LEAVES 394.6

+/-

5,417.3 K-40 14-Aug-24 HORSERADISH LEAVES 11.8 MN-54 14-Aug-24 HORSERADISH LEAVES 16.3 CO-58 14-Aug-24 HORSERADISH LEAVES 17.7 FE-59 14-Aug-24 HORSERADISH LEAVES 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 70

Exposure Pathway - Ingestion Food/Garden Sample Description Collection Date Nuclide Duplicate Analysis Location: Q-6 Concentration (pCi/Kg Wet) 16.4 CO-60 14-Aug-24 HORSERADISH LEAVES 35.4 ZN-65 14-Aug-24 HORSERADISH LEAVES 14.8 ZR-NB-95 14-Aug-24 HORSERADISH LEAVES 21.3 I-131 14-Aug-24 HORSERADISH LEAVES 14.3 CS-134 14-Aug-24 HORSERADISH LEAVES 17.1 CS-137 14-Aug-24 HORSERADISH LEAVES 331.1

+/-

679.7 BE-7 11-Sep-24 VEGETATION 784.4

+/-

6,103.3 K-40 11-Sep-24 VEGETATION 17.9 MN-54 11-Sep-24 VEGETATION 22.0 CO-58 11-Sep-24 VEGETATION 74.5 FE-59 11-Sep-24 VEGETATION 31.4 CO-60 11-Sep-24 VEGETATION 57.5 ZN-65 11-Sep-24 VEGETATION 20.2 ZR-NB-95 11-Sep-24 VEGETATION 35.9 I-131 11-Sep-24 VEGETATION 29.8 CS-134 11-Sep-24 VEGETATION 30.5 CS-137 11-Sep-24 VEGETATION 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 71

Exposure Pathway - Ingestion Food/Crops Sample Description Collection Date Nuclide Duplicate Analysis Location: NR-D1 Concentration (pCi/Kg Wet) 164.8 BE-7 25-Oct-24 IRRIGATED SOYBEANS 921.3

+/-

13,351.0 K-40 25-Oct-24 IRRIGATED SOYBEANS 18.9 MN-54 25-Oct-24 IRRIGATED SOYBEANS 18.9 CO-58 25-Oct-24 IRRIGATED SOYBEANS 67.7 FE-59 25-Oct-24 IRRIGATED SOYBEANS 12.0 CO-60 25-Oct-24 IRRIGATED SOYBEANS 56.9 ZN-65 25-Oct-24 IRRIGATED SOYBEANS 23.8 ZR-NB-95 25-Oct-24 IRRIGATED SOYBEANS 22.3 I-131 25-Oct-24 IRRIGATED SOYBEANS 19.2 CS-134 25-Oct-24 IRRIGATED SOYBEANS 17.3 CS-137 25-Oct-24 IRRIGATED SOYBEANS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 72

Exposure Pathway - Ingestion Food/Crops Sample Description Collection Date Nuclide Duplicate Analysis Location: NR-D2 Concentration (pCi/Kg Wet) 29.3 BE-7 07-Nov-24 IRRICATED CORN 142.8

+/-

1,876.2 K-40 07-Nov-24 IRRICATED CORN 3.8 MN-54 07-Nov-24 IRRICATED CORN 5.0 CO-58 07-Nov-24 IRRICATED CORN 10.9 FE-59 07-Nov-24 IRRICATED CORN 4.8 CO-60 07-Nov-24 IRRICATED CORN 10.4 ZN-65 07-Nov-24 IRRICATED CORN 6.0 ZR-NB-95 07-Nov-24 IRRICATED CORN 10.9 I-131 07-Nov-24 IRRICATED CORN 4.5 CS-134 07-Nov-24 IRRICATED CORN 5.1 CS-137 07-Nov-24 IRRICATED CORN 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 73

Exposure Pathway - Ingestion Food/Crops Sample Description Collection Date Nuclide Duplicate Analysis Location: NR-U1 Concentration (pCi/Kg Wet) 91.9 BE-7 04-Oct-24 IRRIGATED CORN 262.8

+/-

3,147.3 K-40 04-Oct-24 IRRIGATED CORN 9.7 MN-54 04-Oct-24 IRRIGATED CORN 7.1 CO-58 04-Oct-24 IRRIGATED CORN 17.7 FE-59 04-Oct-24 IRRIGATED CORN 8.4 CO-60 04-Oct-24 IRRIGATED CORN 16.6 ZN-65 04-Oct-24 IRRIGATED CORN 6.6 ZR-NB-95 04-Oct-24 IRRIGATED CORN 20.2 I-131 04-Oct-24 IRRIGATED CORN 10.0 CS-134 04-Oct-24 IRRIGATED CORN 10.9 CS-137 04-Oct-24 IRRIGATED CORN 126.0 BE-7 27-Oct-24 IRRIGATED SOYBEANS 568.5

+/-

14,437.0 K-40 27-Oct-24 IRRIGATED SOYBEANS 7.7 MN-54 27-Oct-24 IRRIGATED SOYBEANS 12.5 CO-58 27-Oct-24 IRRIGATED SOYBEANS 31.8 FE-59 27-Oct-24 IRRIGATED SOYBEANS 16.0 CO-60 27-Oct-24 IRRIGATED SOYBEANS 37.5 ZN-65 27-Oct-24 IRRIGATED SOYBEANS 14.1 ZR-NB-95 27-Oct-24 IRRIGATED SOYBEANS 26.9 I-131 27-Oct-24 IRRIGATED SOYBEANS 13.0 CS-134 27-Oct-24 IRRIGATED SOYBEANS 16.1 CS-137 27-Oct-24 IRRIGATED SOYBEANS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 74

Exposure Pathway - Aquatic Vegetation Sample Description Collection Date Nuclide Duplicate Analysis Location: EEA Concentration (pCi/Kg Wet) 113.2

+/-

359.4 BE-7 08-Jul-24 COONTAIL 266.4

+/-

2,291.5 K-40 08-Jul-24 COONTAIL 11.3 MN-54 08-Jul-24 COONTAIL 9.2 CO-58 08-Jul-24 COONTAIL 29.0 FE-59 08-Jul-24 COONTAIL 6.6 CO-60 08-Jul-24 COONTAIL 16.4 ZN-65 08-Jul-24 COONTAIL 15.6 ZR-NB-95 08-Jul-24 COONTAIL 18.5 I-131 08-Jul-24 COONTAIL 11.1 CS-134 08-Jul-24 COONTAIL 9.2 CS-137 08-Jul-24 COONTAIL 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 75

Exposure Pathway - Aquatic Vegetation Sample Description Collection Date Nuclide Duplicate Analysis Location: MUDS Concentration (pCi/Kg Wet) 88.0

+/-

240.5 BE-7 10-Jul-24 AMERICAN PONDWEED 203.9

+/-

2,292.0 K-40 10-Jul-24 AMERICAN PONDWEED 8.8 MN-54 10-Jul-24 AMERICAN PONDWEED 9.4 CO-58 10-Jul-24 AMERICAN PONDWEED 22.8 FE-59 10-Jul-24 AMERICAN PONDWEED 10.0 CO-60 10-Jul-24 AMERICAN PONDWEED 15.2 ZN-65 10-Jul-24 AMERICAN PONDWEED 9.9 ZR-NB-95 10-Jul-24 AMERICAN PONDWEED 24.5 I-131 10-Jul-24 AMERICAN PONDWEED 8.8 CS-134 10-Jul-24 AMERICAN PONDWEED 11.6 CS-137 10-Jul-24 AMERICAN PONDWEED 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 76

Exposure Pathway - Aquatic Vegetation Sample Description Collection Date Nuclide Duplicate Analysis Location: SC Concentration (pCi/Kg Wet) 192.3

+/-

687.2 BE-7 07-Aug-24 CATTAIL 304.4

+/-

2,377.8 K-40 07-Aug-24 CATTAIL 7.3 MN-54 07-Aug-24 CATTAIL 11.4 CO-58 07-Aug-24 CATTAIL 23.5 FE-59 07-Aug-24 CATTAIL 11.6 CO-60 07-Aug-24 CATTAIL 14.3 ZN-65 07-Aug-24 CATTAIL 14.0 ZR-NB-95 07-Aug-24 CATTAIL 30.1 I-131 07-Aug-24 CATTAIL 14.7 CS-134 07-Aug-24 CATTAIL 18.0 CS-137 07-Aug-24 CATTAIL 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 77

Exposure Pathway - Aquatic Bottom Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: DC Concentration (pCi/Kg Dry) 410.4

+/-

11,997.0 K-40 23-May-24 BOTTOM SEDIMENT 410.4

+/-

11,997.0 K-40 23-May-24 BOTTOM SEDIMENT 18.4 MN-54 23-May-24 BOTTOM SEDIMENT 18.4 MN-54 23-May-24 BOTTOM SEDIMENT 23.0 CO-58 23-May-24 BOTTOM SEDIMENT 23.0 CO-58 23-May-24 BOTTOM SEDIMENT 37.2 FE-59 23-May-24 BOTTOM SEDIMENT 37.2 FE-59 23-May-24 BOTTOM SEDIMENT 16.8 CO-60 23-May-24 BOTTOM SEDIMENT 16.8 CO-60 23-May-24 BOTTOM SEDIMENT 39.9 ZN-65 23-May-24 BOTTOM SEDIMENT 39.9 ZN-65 23-May-24 BOTTOM SEDIMENT 14.9 CS-134 23-May-24 BOTTOM SEDIMENT 14.9 CS-134 23-May-24 BOTTOM SEDIMENT 19.1

+/-

56.7 CS-137 23-May-24 BOTTOM SEDIMENT 19.1

+/-

56.7 CS-137 23-May-24 BOTTOM SEDIMENT 5,380.0 FE-55 23-May-24 BOTTOM SEDIMENT 5,380.0 FE-55 23-May-24 BOTTOM SEDIMENT 441.8

+/-

13,574.0 K-40 17-Sep-24 BOTTOM SEDIMENT 21.1 MN-54 17-Sep-24 BOTTOM SEDIMENT 23.6 CO-58 17-Sep-24 BOTTOM SEDIMENT 26.0 FE-59 17-Sep-24 BOTTOM SEDIMENT 16.5 CO-60 17-Sep-24 BOTTOM SEDIMENT 36.8 ZN-65 17-Sep-24 BOTTOM SEDIMENT 20.4 CS-134 17-Sep-24 BOTTOM SEDIMENT 15.1

+/-

49.0 CS-137 17-Sep-24 BOTTOM SEDIMENT 21,403.0 FE-55 17-Sep-24 BOTTOM SEDIMENT 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 78

Exposure Pathway - Aquatic Bottom Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: EEA Concentration (pCi/Kg Dry) 473.0

+/-

10,199.0 K-40 29-Mar-24 BOTTOM SEDIMENT 20.0 MN-54 29-Mar-24 BOTTOM SEDIMENT 18.6 CO-58 29-Mar-24 BOTTOM SEDIMENT 38.2 FE-59 29-Mar-24 BOTTOM SEDIMENT 10.0 CO-60 29-Mar-24 BOTTOM SEDIMENT 42.3 ZN-65 29-Mar-24 BOTTOM SEDIMENT 16.5 CS-134 29-Mar-24 BOTTOM SEDIMENT 16.7

+/-

34.7 CS-137 29-Mar-24 BOTTOM SEDIMENT 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 79

Exposure Pathway - Aquatic Bottom Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: JRR Concentration (pCi/Kg Dry) 432.4

+/-

15,343.0 K-40 23-May-24 BOTTOM SEDIMENT 432.4

+/-

15,343.0 K-40 23-May-24 BOTTOM SEDIMENT 432.4

+/-

15,343.0 K-40 23-May-24 BOTTOM SEDIMENT 23.1 MN-54 23-May-24 BOTTOM SEDIMENT 23.1 MN-54 23-May-24 BOTTOM SEDIMENT 23.1 MN-54 23-May-24 BOTTOM SEDIMENT 23.4 CO-58 23-May-24 BOTTOM SEDIMENT 23.4 CO-58 23-May-24 BOTTOM SEDIMENT 23.4 CO-58 23-May-24 BOTTOM SEDIMENT 51.0 FE-59 23-May-24 BOTTOM SEDIMENT 51.0 FE-59 23-May-24 BOTTOM SEDIMENT 51.0 FE-59 23-May-24 BOTTOM SEDIMENT 20.4 CO-60 23-May-24 BOTTOM SEDIMENT 20.4 CO-60 23-May-24 BOTTOM SEDIMENT 20.4 CO-60 23-May-24 BOTTOM SEDIMENT 39.7 ZN-65 23-May-24 BOTTOM SEDIMENT 39.7 ZN-65 23-May-24 BOTTOM SEDIMENT 39.7 ZN-65 23-May-24 BOTTOM SEDIMENT 14.8 CS-134 23-May-24 BOTTOM SEDIMENT 14.8 CS-134 23-May-24 BOTTOM SEDIMENT 14.8 CS-134 23-May-24 BOTTOM SEDIMENT 14.5

+/-

70.6 CS-137 23-May-24 BOTTOM SEDIMENT 14.5

+/-

70.6 CS-137 23-May-24 BOTTOM SEDIMENT 14.5

+/-

70.6 CS-137 23-May-24 BOTTOM SEDIMENT 612.8

+/-

18,479.0 K-40 12-Nov-24 BOTTOM SEDIMENT 31.9 MN-54 12-Nov-24 BOTTOM SEDIMENT 42.9 CO-58 12-Nov-24 BOTTOM SEDIMENT 107.3 FE-59 12-Nov-24 BOTTOM SEDIMENT 30.3 CO-60 12-Nov-24 BOTTOM SEDIMENT 68.7 ZN-65 12-Nov-24 BOTTOM SEDIMENT 26.8 CS-134 12-Nov-24 BOTTOM SEDIMENT 20.7

+/-

84.4 CS-137 12-Nov-24 BOTTOM SEDIMENT 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 80

Exposure Pathway - Aquatic Bottom Sediment Sample Description Collection Date Nuclide Duplicate Analysis Location: MUDS Concentration (pCi/Kg Dry) 226.6

+/-

8,395.9 K-40 14-Aug-24 BOTTOM SEDIMENT 10.7 MN-54 14-Aug-24 BOTTOM SEDIMENT 15.2 CO-58 14-Aug-24 BOTTOM SEDIMENT 44.9 FE-59 14-Aug-24 BOTTOM SEDIMENT 9.7 CO-60 14-Aug-24 BOTTOM SEDIMENT 24.1 ZN-65 14-Aug-24 BOTTOM SEDIMENT 8.4 CS-134 14-Aug-24 BOTTOM SEDIMENT 6.9

+/-

16.9 CS-137 14-Aug-24 BOTTOM SEDIMENT 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 81

Exposure Pathway - Terrestrial Vegetation Sample Description Collection Date Nuclide Duplicate Analysis Location: EEA Concentration (pCi/Kg Wet) 194.8

+/-

1,344.8 BE-7 14-Jun-24 GRASS 194.8

+/-

1,344.8 BE-7 14-Jun-24 GRASS 194.8

+/-

1,344.8 BE-7 14-Jun-24 GRASS 545.0

+/-

8,530.8 K-40 14-Jun-24 GRASS 545.0

+/-

8,530.8 K-40 14-Jun-24 GRASS 545.0

+/-

8,530.8 K-40 14-Jun-24 GRASS 18.7 MN-54 14-Jun-24 GRASS 18.7 MN-54 14-Jun-24 GRASS 18.7 MN-54 14-Jun-24 GRASS 11.3 CO-58 14-Jun-24 GRASS 11.3 CO-58 14-Jun-24 GRASS 11.3 CO-58 14-Jun-24 GRASS 31.1 FE-59 14-Jun-24 GRASS 31.1 FE-59 14-Jun-24 GRASS 31.1 FE-59 14-Jun-24 GRASS 12.8 CO-60 14-Jun-24 GRASS 12.8 CO-60 14-Jun-24 GRASS 12.8 CO-60 14-Jun-24 GRASS 48.2 ZN-65 14-Jun-24 GRASS 48.2 ZN-65 14-Jun-24 GRASS 48.2 ZN-65 14-Jun-24 GRASS 12.0 ZR-NB-95 14-Jun-24 GRASS 12.0 ZR-NB-95 14-Jun-24 GRASS 12.0 ZR-NB-95 14-Jun-24 GRASS 21.8 I-131 14-Jun-24 GRASS 21.8 I-131 14-Jun-24 GRASS 21.8 I-131 14-Jun-24 GRASS 12.6 CS-134 14-Jun-24 GRASS 12.6 CS-134 14-Jun-24 GRASS 12.6 CS-134 14-Jun-24 GRASS 15.9 CS-137 14-Jun-24 GRASS 15.9 CS-137 14-Jun-24 GRASS 15.9 CS-137 14-Jun-24 GRASS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 82

Exposure Pathway - Terrestrial Vegetation Sample Description Collection Date Nuclide Duplicate Analysis Location: MUDS Concentration (pCi/Kg Wet) 95.5

+/-

1,944.4 BE-7 28-May-24 GRASS 95.5

+/-

1,944.4 BE-7 28-May-24 GRASS 154.1

+/-

6,132.3 K-40 28-May-24 GRASS 154.1

+/-

6,132.3 K-40 28-May-24 GRASS 6.0 MN-54 28-May-24 GRASS 6.0 MN-54 28-May-24 GRASS 6.4 CO-58 28-May-24 GRASS 6.4 CO-58 28-May-24 GRASS 10.3 FE-59 28-May-24 GRASS 10.3 FE-59 28-May-24 GRASS 3.9 CO-60 28-May-24 GRASS 3.9 CO-60 28-May-24 GRASS 3.9 CO-60 28-May-24 GRASS 12.7 ZN-65 28-May-24 GRASS 12.7 ZN-65 28-May-24 GRASS 7.1 ZR-NB-95 28-May-24 GRASS 7.1 ZR-NB-95 28-May-24 GRASS 37.9 I-131 28-May-24 GRASS 38.0 I-131 28-May-24 GRASS 4.6 CS-134 28-May-24 GRASS 4.6 CS-134 28-May-24 GRASS 3.0 CS-137 28-May-24 GRASS 3.0 CS-137 28-May-24 GRASS 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 83

Exposure Pathway - Terrestrial Soil Sample Description Collection Date Nuclide Duplicate Analysis Location: EEA Concentration (pCi/Kg Dry) 509.2

+/-

7,083.2 K-40 09-Feb-24 SOIL 29.7 MN-54 09-Feb-24 SOIL 19.8 CO-58 09-Feb-24 SOIL 81.5 FE-59 09-Feb-24 SOIL 21.6 CO-60 09-Feb-24 SOIL 40.7 ZN-65 09-Feb-24 SOIL 22.6 CS-134 09-Feb-24 SOIL 28.0

+/-

85.1 CS-137 09-Feb-24 SOIL 516.8

+/-

14,522.0 K-40 09-Sep-24 SOIL Duplicate 273.2

+/-

14,778.0 K-40 09-Sep-24 SOIL 21.3 MN-54 09-Sep-24 SOIL Duplicate 11.7 MN-54 09-Sep-24 SOIL Duplicate 12.6 CO-58 09-Sep-24 SOIL 18.2 CO-58 09-Sep-24 SOIL 37.7 FE-59 09-Sep-24 SOIL Duplicate 22.3 FE-59 09-Sep-24 SOIL 21.5 CO-60 09-Sep-24 SOIL Duplicate 10.3 CO-60 09-Sep-24 SOIL 41.3 ZN-65 09-Sep-24 SOIL Duplicate 25.3 ZN-65 09-Sep-24 SOIL Duplicate 9.2 CS-134 09-Sep-24 SOIL 18.5 CS-134 09-Sep-24 SOIL 21.2

+/-

80.7 CS-137 09-Sep-24 SOIL Duplicate 8.8

+/-

97.8 CS-137 09-Sep-24 SOIL 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 84

Exposure Pathway - Terrestrial Soil Sample Description Collection Date Nuclide Duplicate Analysis Location: MUDS Concentration (pCi/Kg Dry) 206.2 11,327 +/-

K-40 10-Dec-24 SOIL 9.6 MN-54 10-Dec-24 SOIL 8.9 CO-58 10-Dec-24 SOIL 23.8 FE-59 10-Dec-24 SOIL 6.7 CO-60 10-Dec-24 SOIL 17.1 ZN-65 10-Dec-24 SOIL 7.0 CS-134 10-Dec-24 SOIL 7.2

+/-

152.0 CS-137 10-Dec-24 SOIL 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 85

Exposure Pathway - Ingestion Meat Sample Description Collection Date Nuclide Duplicate Analysis Location: R1.4 Concentration (pCi/Kg Wet) 128.3

+/-

2,700.1 K-40 24-Apr-24 WILD TURKEY 4.9 MN-54 24-Apr-24 WILD TURKEY 3.1 CO-58 24-Apr-24 WILD TURKEY 11.2 FE-59 24-Apr-24 WILD TURKEY 6.0 CO-60 24-Apr-24 WILD TURKEY 9.4 ZN-65 24-Apr-24 WILD TURKEY 4.5 CS-134 24-Apr-24 WILD TURKEY 5.5 CS-137 24-Apr-24 WILD TURKEY 85.0

+/-

341.0 H-3 24-Apr-24 WILD TURKEY 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 86

Exposure Pathway - Ingestion Meat Sample Description Collection Date Nuclide Duplicate Analysis Location: R1.8 Concentration (pCi/Kg Wet) 112.9

+/-

2,565.8 K-40 06-Dec-24 DEER 4.7 MN-54 06-Dec-24 DEER 5.8 CO-58 06-Dec-24 DEER 14.3 FE-59 06-Dec-24 DEER 5.3 CO-60 06-Dec-24 DEER 12.2 ZN-65 06-Dec-24 DEER 4.4 CS-134 06-Dec-24 DEER 5.4 CS-137 06-Dec-24 DEER 115.0

+/-

1,324.0 H-3 06-Dec-24 DEER 2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station Page C - 87

2024 Annual Radiological Environmental Operating Report Wolf Creek Generating Station APPENDIX D LAND USE CENSUS REPORT

WOLF CREEK GENERATING STATION 2024 LAND USE CENSUS REPORT Prepared by:

02/06/2025 Joseph p. Augustyn Date Peer Review:

02/18/2025 Jon Matthew Vopat Date Approved by:

02/27/2025 Daniel Michel Date

2024 Land Use Census Report 1

EXECUTIVE

SUMMARY

The annual Land Use Census of rural residents within five miles of the Wolf Creek Generating Station (WCGS) has been completed in 2024 in accordance with AP 07B-004, [Offsite Dose Calculation Manual (Radiological Environmental Monitoring Program)].

A change was necessary regarding milk locations. Location J3.80-11RD1626 provided a survey showing that they are producing milk for human consumption. Changes to AP 07B-004 might be made regarding the milk location.

The two broadleaf vegetation locations with the highest calculated annual average D/Q rankings are A2.60-17TE1527 and Q2.35-MILA1619. Since these gardens are currently listed as sample locations for the Radiological Environmental Monitoring Program in procedure AP 07B-004 (locations A-3 and Q-6), no program changes are necessary regarding broadleaf vegetation locations.

BACKGROUND Section 5.2, Attachment A, of 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."

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

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

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

The survey excluded the residents of New Strawn and 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 in each sector that did not return surveys. Also used Google Earth/Maps to obtain images of properties.

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.

2024 Land Use Census Report 2

RESULTS No changes were identified for the nearest occupied residence in each sector. Six changes were noted for the nearest garden producing broadleaf vegetation. These changes are identified as an underlined entry in the Tables. There was one change regarding milk sample locations. One survey came back with the property producing milk for human consumption. According with AP 07B-004 (REMP) Offsite Dose Calculation Manual a sample should be taken semimonthly April-November if available. Discussions with the property are ongoing.

2024 Land Use Census Report 3

TABLE 1 2024 LAND USE CENSUS DATA LOCATION OF NEAREST:

SECTOR RESIDENCE MILKING ANIMALS BROADLEAF GARDEN A

A2.60-17TE1527 None A2.60-17TE1527 B

B3.53-QURD1755 None B4.09-18RD1739 C

C1.92-16RD1655 None C4.89-18RD1859 D

D2.33-RERD1520 None D3.18-RERD1618 E

E1.78-QULA1451 None E4.40-TRRD1551 F

F1.84-QULA1419 None F3.37-14RD1904 G

G2.82-13Rd1790 None None H

H3.09-12RD1711 None H3.15-QURD1181 J

J3.70-11RD1540 J3.80-11RD1626 J3.80-11RD1626 K

K2.79-12LA1435 None None L

L2.10-NARD1339 None L2.39-NARD1309 M

M2.34-14RD1346 None M4.52-13RD1151 N

N2.08-15RD1350 None None P

P2.66-16RD1268 None None Q

Q2.35-MILA1619 None Q2.35-MILA1619 R

R2.08-NALN1650 None R4.43-NARD1891 NOTE: Entries underlined indicate changes from the 2023 Land Use Census.

EXAMPLE: A2.60-17TE1527 "A" = Sector A "2.60" = 2.60 miles from the reactor "17TE1527" = address

2024 Land Use Census Report 4

TABLE 2 SECTOR 2023 NEAREST RESIDENCE 2024 NEAREST RESIDENCE A

A2.60-17TE1527 A2.60-17TE1527 B

B3.53-QURD1755 B3.53-QURD1755 C

C1.92-16RD1655 C1.92-16RD1655 D

D2.33-RERD1520 D2.33-RERD1520 E

E1.78-QULA1451 E1.78-QULA1451 F

F1.84-QULA1419 F1.84-QULA1419 G

G2.82-13RD1790 G2.82-13RD1790 H

H3.09-12RD1711 H3.09-12RD1711 J

J3.70-11RD1540 J3.70-11RD1540 K

K2.79-12LA1435 K2.79-12LA1435 L

L2.10-NARD1339 L2.10-NARD1339 M

M2.34-14RD1346 M2.34-14RD1346 N

N2.08-15RD1350 N2.08-15RD1350 P

P2.66-16RD1268 P2.66-16RD1268 Q

Q2.35-MILA1619 Q2.35-MILA1619 R

R2.08-NALN1650 R2.08-NALN1650 NOTE: No changes identified from the 2023 Land Use Census.

2024 Land Use Census Report 5

TABLE 3 2024 LAND USE CENSUS MILK AND GARDEN DATA NOTE: Underlined entries indicate changes from the 2023 Land Use Census.

SECTOR 2023 MILKING ANIMALS 2024 MILKING ANIMALS 2023 NEAREST BROADLEAF GARDEN 2024 NEAREST BROADLEAF GARDEN A

None None A2.60-17TE1527 A2.60-17TE1527 B

None None B4.09-18RD1739 B4.09-18RD1739 C

None None C3.58-RERD1675 C4.89-18RD1859 D

None None None D3.18-RERD1618 E

None None E4.40-TRRD1551 E4.40-TRRD1551 F

None None F3.37-14RD1904 F3.37-14RD1904 G

None None G3.60-RERD1198 None H

None None H3.15-QURD1181 H3.15-QURD1181 J

None J3.80-11RD1626 J3.80-11RD1626 J3.80-11RD1626 K

None None None None L

None None L2.39-NARD1309 L2.39-NARD1309 M

None None M3.69-LYLA1290 M4.52-13RD1151 N

None None N2.38-RODR9 None P

None None P4.52-KARD1630 None Q

None None Q2.35-MILA1619 Q2.35-MILA1619 R

None None R4.43-NARD1891 R4.43-NARD1891

2024 Land Use Census Report 6

TABLE 4 INFORMATION USED FOR D/Q CALCULATIONS ON GARDENS PRODUCING BROADLEAF VEGETATION

• Sector G,K,N and P have no broadleaf gardens to report.

Originated by:

Date:

2/6/2025 Verified by:

Date:

2/18/2025 FROM LAND USE DIST CALC NEAR NEAR FAR FAR SECTOR SECTOR (MI)

(METERS)

DIST D / Q DIST D / Q CALC RANKING A

2.60 4184 4000 1.94E-09 5000 1.32E-09 1.83E-09 1

B 4.09 6582 6000 4.84E-10 7000 3.59E-10 4.11E-10 6

C 4.89 7870 7000 1.37E-10 8000 1.10E-10 1.14E-10 12 D

3.18 5118 5000 1.99E-10 6000 1.46E-10 1.93E-10 10 E

4.40 7081 7000 1.28E-10 8000 1.03E-10 1.26E-10 11 F

3.37 5423 5000 2.68E-10 6000 1.97E-10 2.38E-10 8

G H

3.15 5069 5000 6.41E-10 6000 4.71E-10 6.29E-10 4

J 3.80 6116 6000 3.37E-10 7000 2.51E-10 3.27E-10 7

K L

2.39 3846 3000 1.02E-09 4000 6.11E-10 6.74E-10 3

M 4.52 7274 7000 2.22E-10 8000 1.80E-10 2.10E-10 9

N P

Q 2.35 3782 3000 1.53E-09 4000 9.17E-10 1.05E-09 2

R 4.43 7129 7000 6.24E-10 8000 5.04E-10 6.09E-10 5

FROM SA-19-002