ML20143A256

2019 Annual Radiological Environmental Operating Report, Part I, Summary and Interpretation

ML20143A256
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Site:	Kewaunee
Issue date:	05/11/2020
From:	ATI Environmental Midwest Lab, ATI Environmental, Dominion Energy Kewaunee
To:	Office of Nuclear Reactor Regulation
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• a Dominion ii' Energy 2019 Annu~

Radiological Environmental Operating i:

Report Kewaunee Power Station Dotninion Energy Kewaunee, Inc.

2; Dominion pr Energy 2019 Annual Radiological Environlllental Operating Report Kewaunee Power Station Part/

Summary and Interpretation Do:minion Energy Kewaunee, Inc.

1*

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ATI Environmental. Inc *

il'f(.r'\\I Midwest Laboratory 700 bndwehr Rood

• Northbrook, ll 60062-2310 phone (1147) 564-0700

• fax (847) 564-4517 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TO DOMINION NUCLEAR RADIOLOGICAL MONITORING PROGRAM FOR THE KEWAUNEE POWER STATION KEWAUNEE, WISCONSIN PART I -

SUMMARY

AND INTERPRETATION January 1 to December 31, 2019 Prepared and submitted by:

ATI ENVIRONMENTAL Inc.

Midwest Laboratory Project No. 8002 Approved: ~ J.

~~-*

Ashok D. Banavali, Ph.D.

Laboratory Manager D ni J.Shannon Manager diological Protection and Chemistry, KPS

PREFACE The staff of ATI Environmental, Inc., Midwest Laboratory were responsible for the acquisition of data presented in this report. Assistance in sample collection was provided by Kewaunee Power Station personnel. The report was prepared by staff members of ATI Environmental, Inc., Midwest

. Laboratory.

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TABLE OF CONTENTS Page Preface......................................................................................................................................................... Ii List of Figures.............................................................................................................................................. iv List ofTables................................................................................................................................................ iv

1.0 INTRODUCTION

..................................................................................... -...................,................................. 1 2.0

SUMMARY

........................................................................................................................................................... 2 3.0 RADIOLOGICAL SURVElLLANCE PROGRAM........................................................................................... 3 3.1 Methodology.................................................................................................................................. 3 3.1.1 The Air Program.............................................................................................................. 3 3.1.2 The Terrestrial Program.................................................................................................. 4 3.1.3 The Aquatic Program...................................................................................................... 5 3.1.4 Program Execution.......................................................................................................... 6 3.1.5 Program Modifications..................................................................................................... 6 3.2 Results and Discussion................................................................................................................. 7 3.2.1 Atmospheric Nuclear Detonations and Nuclear Accidents.............................................. 7 3.2.2 The Air Environment........................................................................................................ 7 3.2.3 The Terrestrial Environment.......................................................................................... 10 3.2.4 The Aquatic Environment.............................................................................................. 11 3.3 Land Use Census........................................................................................................................ 12 3.4 Laboratory Procedures................................................................................... :............................ 12 4.0 FIGURES AND TABLES............................................................................................................................ 13

5.0 REFERENCES

.......................................................................................................................................... 25 APPENDICES A

lnterlaboratory Comparison Program Results............................................................................ A-1 B

Data Reporting Conventions.............,............,........................................................................... 8-1 c

Effluent Concentrations............................................................................................................. C-1 iii

LIST OF FIGURES No.

Caption 4-1 Sampling locations, Kewaunee Power Station............................................................................. 14 4-2 Groundwater Monitoring Wells, Kewaunee Power Station........................................................... 15 No.

LIST OF TABLES Title 4.1 Sampling locations, Kewaunee Power Station.............................................................................. 16 4.2 Type and frequency of collection................................................................................................. 17 4.3 Sample codes used in Table 4.2................................................................................................. 17 4.4 Sampling summary, January - December, 2019......................................................................... 18 4.5 Environmental Radiological Monitoring Program Summary......................................................... 19 4.6 Land Use Census........................................................................................................................ 24 In addition, the following tables are in the Appendices:

Appendix A A-1 lnterlaboratory Comparison Program Results............................................................................ A1-1 A-2 Thermoluminescent dosimeters (TLDs)..................................................................................... A2-1 A-3 In-house Spiked Samples.......................................................................................................... A3-1 A-4 In-house "Blank" Samples......................................................................................................... A4-1 A-5 In-house "Duplicate" Samples.................................................................................................... A5-1 A-6 Department of Energy MAPEP comparison results.................................................................... A6-1 A-7 Environmental Resources Associates, Crosscheck Program Results (MRAD).......................... A7-1 Attachment A: Acceptance criteria for spiked samples................................................................ A-2 iv

1.0 INTRODUCTION

The Kewaunee Power Station was a 598 megawatt pressurized water reactor located on the Wisconsin shore of Lake Michigan in Kewaunee County. The Plant became critical on March 7, 1974. Initial power generation was achieved on April 8, 1974, and the Plant was declared commercial on June 16, 1974.

On February 25, 2013, Dominion Energy Kewaunee submitted a certification of intent to cease power operations to the Nuclear Regulatory Committee. Power Operation of the Kewaunee Power Station ceased on May 7, 2013. The fuel was permanently removed from the reactor and placed in the spent fuel pool for storage on May 14, 2013. On June 15, 2017, the transfer of all spent fuel from the KPS Spent Fuel Pool (SFP) to the Independent Spent Fuel Storage Installation (ISFSI) was completed. All remaining irradiated materials were removed from the SFP in October of 2017. All radioactive liquid was drained from systems in the Auxiliary Building by the end of the first week of August 2018.

This report summarizes the environmental operation data collected during the period January -

December 2019.

Dominion Energy Kewaunee, operator and owner of the Kewaunee Power Station, assumes responsibility for the environmental program at the Plant. Any questions should be directed to Mr. Daniel J. Shannon, Manager Radiological Protection and Chemistry, at (920) 304-1129.

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• I. !.

I 3.0 RADIOLOGICAL SURVEILLANCE PROGRAM Following is a description of the Radiological Surveillance Program and its execution. See section 3.1.5 for details of additional changes that were made to the program in 2019 as a result of the cessation of power operations as described in the introduction.

3.1 METHODOLOGY The sampling locations are shown in Figure 4-1. Table 4.1 describes the locations, lists for each direction and distance from the reactor, and defines which are the indicator and control locations.

The sampling program monitors the air, terrestrial, and aquatic environments. The types of samples collected at each location and the frequency of collections are presented in Table 4.2, using sample codes defined in Table 4.3. The collections and analyses that comprise the program are described below.

Finally, the execution of the program in the current reporting year is discussed.

3.1.1 The Air Program Ambient Gamma Radiation - TLDs Ambient gamma radiation is monitored at the one control location (K-2), at four inner ring locations (K-1f, K-25, K-27 and K-30), and from six outer ring locations (K-3, K-5, K-8, K-17, K-39 and K-43) by thermoluminescent dosimetry {TLD). Two TLD cards, each having four main readout areas containing CaSO4:Dy phosphor, are placed at each location (eight readout areas per each location).

One card is exchanged quarterly, the other card is exchanged annually and read only on an emergency basis.

Dosimeters have also been placed at four additional locations (K-1 m, K-1 o, K-1 q and K-1 r), to monitor an Independent Spent Fuel Storage Installation (ISFSI) as part of the inner ring locations. They are replaced and measured quarterly.

Airborne Particulates Airborne particulates are collected on 47 mm diameter filters, at a volumetric rate of approx. one cubic foot per minute. The filters are collected weekly from four locations (K-1f, K-2(control), K-8 and K-43),

and dispatched by mail to ATI Environmental, Inc. for radiometric analysis. The particulate filters are counted for gross beta activity, a minimum of three days after the date of collection, to allow for the decay of naturally-occurring short-lived radionuclides.

Quarterly composites from each sampling location are analyzed for gamma-emitting isotopes on a high-purity germanium (HPGe) detector.

Airborne Iodine Airborne iodine analysis was discontinued beginning it") 2018 due to the cessation of power operations (see Introduction on page 1).

Precipitation The collection and analysis of precipitation samples was discontinued beginning in 2018 due to the cessation of power operations (see Introduction on page 1).

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3.1.2 The Terrestrial Program Milk The collection and analysis of milk samples was discontinued beginning in 2018 due to the cessation of power operations (see Introduction on page 1).

WellWater Well water is collected quarterly from one off-site well location K-13 and from three on-site wells located at K-1h, K-1t and K-1u. Samples are only collected at locations K-1t and K-1u when these sources are tapped for drinking purposes in areas where the hydraulic gradient or recharge properties are suitable for contamination.

Gamma spectroscopic analysis, tritium and gross beta on the total residue are performed for each water sample. The concentration of potassium-40 is calculated from total potassium. Samples of water from the three on-site wells (K-1 h, K-1t and K-1 u) are analyzed for gross alpha. The water sample from K-1 h is also tested for strontium-90.

Monitoring wells and results associated with the Ground Water Protection Program (GWPP) are reported in the KPS Annual Radioactive Effluent Release Report (ARERR).

The groundwater monitoring well locations associated with the GWPP are included in Figure 4-2 along with the onsite well water sampling locations associated with the REMP.

Domestic Meat The collection and analysis of domestic meat was discontinued in 2018 due to the cessation of power operations (see Introduction on page 1).

The collection and analysis of eggs was discontinued in 2018 due to the cessation of power operations (see Introduction on page 1 ).

Broad leafVegetation Annually, during the third quarter, samples of broad leaf vegetation are collected from location K-26. Samples may also be obtained from other local sources to supplement the program. In addition, two samples of broad leaf vegetation are collected annually from farmland owned by Dominion Energy Kewaunee (K-23a and K-23b) and rented to a private individual for growing crops. The samples are analyzed for gamma emitting isotopes.

Cattle Feed Cattle feed (e.g., hay and silage) is collected during the first quarter from dairy farm locations (K-3, K-5, K-34, K-35, K-38 and K-39). The samples are analyzed for gross beta, strontium-90 and gamma emitting isotopes.

Grass Grass is collected during the second, third and fourth quarters from two on-site locations (K-1b and K-1f) and from the dairy farm locations (K-3, K-5, K-34, K-35, K-38 and K-39). The samples are analyzed for gross beta, strontium-90 and gamma emitting isotopes.

Soil Soil samples are collected twice a year on-site at K-1f and from the dairy farm locations (K-3, K-34, K-35 and K-38). The samples are analyzed for gross alpha, gross beta, strontium-90 and gamma emitting isotopes.

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3.1.3 The Aquatic Program Surface Water Surface water samples are taken quarterly from two locations on Lake Michigan: 1) at the point where plant effluent water is discharged into Lake Michigan (K-1 d); and 2) at the main pumping station located approximately equidistant from Kewaunee and Green Bay, which pumps water from the Rostek water intake (K-9) located 11.5 miles NNE of the reactor site. Both raw and tap water are collected at K-9. One-gallon water samples are taken quarterly from two creeks that pass through the site (K-1 b and K-1 e). Samples from the Middle Creek (K-1 b) are collected near the mouth of the creek. Samples from the South Creek (K-1e) are collected about ten feet downstream from the point where the outflow from the two drain pipes meets.

The water is analyzed for gamma emitting isotopes, gross beta activity in total residue, dissolved and suspended solids, and potassium-40, tritium and strontium-90. The concentration of potassium-40 is calculated from the total potassium concentration.

Fish Fish samples are collected during the third quarter near location K-1d. The flesh is separated from the bones, gamma scanned and analyzed for gross beta activity. Bone samples are analyzed for gross beta, and strontium-90. A local fish market, (e.g.,Lafond's in Kewaunee), may be used for backup fish samples, if needed.

Aquatic Slime The collection and analysis of aquatic slime was discontinued in 2018 due to the cessation of power operations (see Introduction on page 1).

Shoreline Sediment Shoreline sediments are collected in May and November from three locations (K-1c, K-1j and K-9) in areas with potential for recreational value. The samples are analyzed for gross beta, strontium-90 and gamma emitting isotopes.

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3.1.4 Program Execution Program execution is summarized in Table 4.4. The program was executed for the year 2019 as described in the preceding sections, with the following exceptions:

Air Particulates A partial air particulate sample (199 m3) was collected at location K-1f, for the sample period ending 4/16/19. A blown fuse caused a power failure to the sample pump (CR#1880).

A partial air particulate sample (197 m3) was collected at location K-1f, for the sample period ending 4/23/19. A blown fuse caused a power failure to the pump (CR#1884).

A partial air particul_ate sample (173 m3) was collected at location K-2, for the sample period ending 6/11/19. A blown fuse to the sample pump power switch was found (CR#1898).

A partial air particulate sample (150 m3) was collected at location K-8, for the sample period ending 7/09/19. The pump was failing so a conservative sampler flowrate of 15 L per minute was used for volume calculation (CR#1904).

A partial air particulate sample (280 m3) was collected at location K-1f for the sample period ending 7/23/19. The cause of the reduced sample was a temporary loss of power to the sampler due to severe weather (CR#1914).

A partial air particulate sample (62 m3) was collected at location K-8, for the sample period ending 8/13/19. A fuse to the sample pump was blown (CR#1927).

A partial air particulate sample (40 m3) was collected at location K-8, for the sample period ending 9/17/19. The main breaker on the pole was tripped (CR#1940).

A partial air particulate sample (86 m3) was collected at location K-8, for the sample period ending 11/19/19. The pump was found not running due to an open power supply breaker (CR#1974).

Surface Water No sample was available for collection 03/04/19 due to frozen conditions (CR#1890).

3.1.5 Program Modifications Further program modifications in 2019 as a result of the cessation of power operations as described in section 1.0 on page 1 are as follows:

Well Water One on-site location K-1 u was added to the program for 2019. Well water sampling frequency remains at once every three months.

Surface Water Surface water sampling frequency was reduced from monthly to quarterly beginning in the second quarter of 2019 on five samples collected at four locations. The locations are K-1 d, K-9 raw, K-9 treated, and when available creek samples from K-1b and K-1e. Analyses for strontium-90 and tritium previously performed on quarterly composites is now performed on the quarterly samples.

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3.2 RESULTS AND DISCUSSION Results for the reporting period January to December, 2019 are presented in summary form in Table 4.5. For each type of analysis, of each sampled medium, the table shows the annual mean and range for all indicator and control locations. The location with the highest annual mean and the results for this location are also given.

The discussion of the results has been divided into three broad categories: the air, terrestrial, and aquatic environments. Within each category, samples will be discussed in the order listed in Table 4.4.

Any discussion of previous environmental data for the Kewaunee Power Station refers to data collected by Environmental Inc., Midwest Laboratory.

Results of all measurements made in 2019 are not included in this section, although references to these results will be made in the discussion. A complete tabulation of results is provided in Part II of the 2019 annual report on the Radiological Monitoring Program for the Kewaunee Power Station.

3.2.1 Atmospheric Nuclear Detonations and Nuclear Accidents There were no atmospheric nuclear tests or accidents reported in 2019. The Chernobyl and Fukushima Daiichi nuclear accidents occurred on April 26, 1986 and March 11, 2011, respectively. The last reported atmospheric nuclear test was conducted by the People's Republic of China on October 16, 1980. Contributions from these events have resulted in the presence of long-lived radioisotopes of cesium and strontium still detectable in the environment.

3.2.2 The Air Environment Ambient Gamma Radiation - TLDs Ambient gamma radiation was monitored by TLDs at eleven locations, ten indicators (K-1f, K-3, K-5, K-8, K-17, K-25, K-27, K-30, K-39 and K-43) and one control (K-2). TLDs at the indicator locations measured a mean dose equivalent of 15.8 mR/91 days, in close agreement with the control location 16.6 mR/91 days. The readings are similar to the averages obtained from 2002 (and prior to) through 2018.

These results support the conclusion that no plant effect on ambient gamma radiation was indicated. These values are lower than the United States average value of 19.5 mR/91 days due to natural background radiation (National Council on Radiation Protection and Measurements, 1975). The highest annual mean was 17.6 mR/91 days, measured at indicator location K-17.

Year Averaoe (Indicators)

Averaoe (Controls)

Dose rate {mR/91 da~s) 2005 15.7 14.3 2006 16.4 15.0 2007 16.2 15.2 2008 15.6 14.2 2009 15.2 13.9 2010 15.2 14.3 2011 15.0 14.5 2012 16.1 15.3 2013 16.2-15.5 2014 15.0 14.8 2015 16.2 16.1 2016 16.5 15.9 2017 16.1 15.4 2018 16.4 17.1 2019 15.8 16.6 Ambient gamma radiation as measured by thermoluminescent dosimetry. Average quarterly dose rates.

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Using ANSI/HPS N13.37-2014 as guidance, a determination of facility related dose was performed using quarterly TLD data from control and indicator locations from 2009 through 2018. A baseline background dose (BQ) was computed for each TLD location. Then a Quarterly Minimum Differential Dose (MDDQ) was calculated as 3 times the 90th percentile of the standard deviations of the historical quarterly results. The result of this calculation was 6.2 mrem. Transit and storage doses weren't considered since the TLD's currently are, and have historically been, collected in the field and delivered to the laboratory for immediate processing.

2019 results at all locations, both indicator and control, were lower than the sum of the Baseline Background Dose (Ba} and the Quarterly Minimum Differential Dose (MDDQ}, which according to ANSI/HP$ N13.37-2014 indicates no detection (ND) and which supports the conclusion that there is no plant effect.

Normalized Quarterly Monitoring Data Quarterly Facility Dose Monitoring Quarterly Ma (mrem per standard quarter)

Fa = Ma - [Ba+MDDoJ(mrem)

Location Baseline 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr B0(mrem)

Indicators K-1f 13.7 12.2 13.1 12.1 13.5 ND ND ND ND K-3 17.1 17.4 16.9 17.3 16.4 ND ND ND ND K-5 16.7 13.5 15.5 14.8 16.1 ND ND ND ND K-8 15.3 15.0 16.2 15.5 16.7 ND ND ND ND K-17 15,7 16.3 18.0 17.7 18.2 ND ND ND ND K-25 17.5 15.6 17.9 17.4 18.4 ND ND ND ND K-27 16.2 15.9 15.3 16.9 15.9 ND ND ND ND K-30 15.8 16.4 15.6 16.4 14.8 ND ND ND ND K-39 15.9 16.2 17,1 16.8 17.2 ND ND ND ND K-43 15.0 13.3 14.2 13.4 15.7 ND ND ND ND Control K-2 16.1 16.2 17.4 16.1 16.6 ND ND ND ND Table assumes 1 roentgen = 1 rem.

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Airborne Particulates The annual gross beta concentration in air particulates averaged 0.021 pCi/m3 at the indicator locations and 0.019 at the control location, similar to the means observed from 2002 (and prior to) through 2018. There is no indication of a plant effect, the average readings were evenly distributed between indicator and control locations. New sampler pumps were installed in the third quarter of 2010. The slight increases in beta activity may be due to a change in the calculated volume. Results are tabulated below.

Year Averaae (Indicators)

Average (Controls)

Concentration (pCi/m3) 2002 0.023 0.023 2003 0.022 0.022 2004 0.019 0.020 2005 0.023 0,023 2006 0.021 0.021 2007 0.022 0.021 2008 0.022 0.022 2009 0.023 0.023 2010 0.023 0.022 2011 0.029 0.029 2012 0.029 0.030 2013 0.024 0.025 2014 0.019 0.019 2015 0.022 0.022 2016 0.021 0.020 2017 0.021 0.021 2018 0.023 0.024 2019 0.021 0.019 Average annual gross beta concentrations in airborne particulates.

Variation in the gross beta activity throughoutthe year is not unusual. Typically, higher beta averages occur during the months of January and December, and the first and fourth quarters, as noted in data from 2002 through 2018.

Gamma spectroscopic analysis of quarterly composites of air particulate filters yielded similar results for indicator and control locations. Beryllium-?, produced continuously in the upper atmosphere by cosmic radiation, was detected in all samples, with an average activity of 0.073 pCi/m3 at the indicator locations and an average of 0.067 pCi/m3 at the control location. All other gamma-emitting isotopes were below their respective MDC levels.

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3.2.3 The Terrestrial Environment Well Water Three of twelve samples tested positive for gross alpha at an average of 3.6 pCi/L. Detectable gross beta activity was measured in five of the twelve indicator samples and also in two of the four control samples tested. The average of indicator samples concentration measured 3.4 pCi/L versus an average of 1.1 pCi/L for the positive control samples. These levels are consistent with the concentrations of potassium-40 measured (2.15 pCi/L average for indicators versus 1.16 pCi/L average for controls}. It is not unusual to see high potassium-40 levels in an agricultural setting.

Potassium-40 is present wherever stable potassium is found. Therefore positive results can be attributed to agricultural runoff. The gross alpha activities are most likely contributions from naturally-occurring daughters of radium and thorium when detected in the well water.

No strontium-90 was detected in any of the four samples tested. All concentrations measured below an MDC value 0.5 pCi/L.

Sixteen well water samples were tested for tritium and gamma emitting isotopes. All tritium concentrations measured below a detection level of 155 pCi/L. Gamma-emitting isotopes measured below respective MDC levels.

Broad Leaf Vegetation Three samples of broad leaf vegetation were analyzed for gamma emitters. Only naturally occurring potassium-40 and beryllium-7 were detected.

Cattle Feed In the twelve cattlefeed samples analyzed in 2019 the gross beta average concentrations of 12.02 pCi/gwet indicator and 16.57 pCi/gwet control agree well with the potassium-40 average concentration results of 9.39 pCi/gwet indicator and 11.20 pCi/gwet control. Strontium-90 was detected in one of the twelve samples at a level of 0.005 pCi/gwet. These results are also comparable to historical results for analysis of cattle feed. No plant effect is indicated.

Eight grass samples were collected in June, August and October at six indicator locations and two control locations for a total of twenty-four samples for the year. The samples were analyzed for gross beta, strontium-90 and gamma emitting isotopes. Analysis results show very good agreement between the gross beta results and the potassium-40 results. Naturally occurring beryllium-7 was also detected in all of the samples. Strontium-90 tested below an overall MDC of 0.005 pCi/g wet in twenty-three of the twenty-four samples tested with one sample testing positive at a concentration of 0.007 pCi/g wet. Trace levels of Sr-90 in the environment can be attributed to nuclear testing and accidents.

With the exception of the naturally-occurring beryllium and potassium, all gamma-emitting isotopes were below MDC levels. These results are comparable to historical results for analysis of grass. No plant effect is indicated.

Soil Gross alpha concentrations in soil averaged 6.99 pCi/g dry in the six indicator samples and 6.56 pCi/g dry in three of the four control samples. Mean gross beta levels measured at indicator and control locations averaged 24.74 and 23.73 pCi/g dry, respectively, primarily due to potassium-40 activity.

Strontium-90 was measured below an overall MDC value of 0.066 pCi/g dry in the ten samples tested.

Cesium-137 was detected in all ten soil samples at an average of 0.08 pCi/g dry at the indicator and 0.12 pCi/g dry at the control locations. Trace levels of Cs-137 in the environment can be attributed to nuclear testing and accidents. Potassium-40 was detected in all samples and averaged 17.43 and 17.49 pCi/g dry for indicator and control locations, respectively. Naturally occurring Be-7 was detected in one sample at a concentration of 2.41 pCi/ gdry. All other gamma-emitting isotopes were below 10

respective MDC levels. The levels of detected activities are similar to those observed from 1990 through 2017. The data suggests no evidence of a plant effect.

3.2.4 The Aquatic Environment Surface Water Gross beta activity in surface water measured higher at the indicator locations (3.1 pCi/L) than at the control locations (1.2* pCi/L). A similar pattern of activity has been observed since 1978. The highest gross beta activities measured in 2019 were sampled from location K-1e. The average activity was 4.0 pCi/L, with a range of 1.7 to 10.4 pCi/L. The potassium-40 concentrations also averaged 2.2 pCi/L and ranged from 0.3 to 6.2 pCi/L at the indicator locations.

Year Averai:ie (Indicators)

Average (Controls)

~rg~ Beta (gCi/L) 2002 5.7 2.2 2003 7.3 2.4 2004 6.2 2.3 2005 5.2 1.7 2006 5.5 1.8 2007 5.7 1.8 2008 4.7 1.5 2009 4.7 1.5 2010 4.7 1.4 2011 5.0 1.5 2012 6.1 1.4 2013 5.7 1.5 2014 4.4 1.9 2015 4.2 1.4 2016

• 5.2 1.6 2017 4.2 1.4 2018 2.8 1.1 2019 3.1 1.2 Average annual gross beta concentrations in surface water.

Sampling at location K-1k was discontinued in 2018. Location K-1k had historically displayed higher gross beta and potassium-40 levels due to agricultural runoff. The remaining sampling locations exhibit results that are comparable with past results.

Tritium was detected at location K-1d condenser discharge in the first quarter sample at a concentration of 226 pCi/L and was reanalyzed with a result of 241 pCi/L. This result was most likely due to residual amounts of tritium remaining in the plant discharge area from multiple discharges of processed radioactive liquid effluents containing tritium during 2018.

Subsequent samples were taken in the second, third and fourth quarter were all below their respective MDC levels.

Strontium-90 was detected in the first quarter composite sample at location K-1 b at a concentration of 0.5 pCi which is close to the MDC of 0.6. Trace levels of Sr-90 in the environment can be attributed to nuclear testing and fallout.

With the exception of naturally occurring potassium-40, gamma-emitting isotopes measured below their respective MDC levels in all samples.

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Fish In the fish sample, the gross beta concentration was 3.51 pCi/g wet in flesh and 5.18 pCi/g wet in bone fractions. In flesh, the gross beta concentration was primarily due to the potassium-40 concentration of 4.02 pCi/g wet.

Excluding potassium-40, gamma-emitting isotopes measured below their respective MDC levels.

Strontium-90 was detected at a concentration of 0.11 pCi/g wet. Trace levels of strontium-90 can be attributed to nuclear testing and fallout.

Shoreline Sediments In shoreline sediment samples, the mean gross beta concentrations measured an average 7.42 pCi/g dry at the indicator locations versus an average of 20.08 pCi/g dry at the control location. These results are consistent with the levels of potassium-40 measured in these samples (4.60 pCi/g dry and 11.74 pCi/g dry respectively).

Cesium-137 was detected in two of four samples taken in 2019 at the indicator locations and in one of the two samples taken at the control location at concentrations of 0.02 and 0.09 pCi/g dry respectively.

Trace levels of Cs-137 in the environment can be attributed to nuclear testing and fallout. Other gamma-emitting isotopes, with the exception of naturally-occurring potassium-40, were below their respective MDC levels.

Strontium-90 was measured below an MDC of 0.060 pCi/g dry for all locations.

These results support the conclusion that there is no plant effect.

3.3 LAND USE CENSUS The Land Use Census satisfies the requirements of the KPS Radiological Environmental Monitoring Manual. Section 2.2.2 states:

"A land use census shall be conducted and shall identify within a distance of 8 km (5 mi.) the location, in each of the 10 meteorological sectors, of the nearest residence and the nearest garden of greater than 50m2 (500 ft2) producing broad leaf vegetation." (Figure 4-1)

The 2019 Land Use Census was completed to identify the presence of the nearest milk animals, gardens and farm crops surrounding the Kewaunee Power Station. The Land Use Census was conducted on September 3, 2019. The census is performed annually during the growing season per Radiation Protection Procedure RP-KW-001-014.

The Land Use Census observed that in Sector M there was no garden found where there had been one previously. In sector N the closest garden changed from 1.03 miles to 2.37 miles. In sector P the closest garden changed from 2.45 miles to 1.41 miles. A summary of the Land Use Census is shown in table 4.6.

3.4 LABO RA TORY PROCEDURES Analytical Procedures used by Environmental, Inc. are on file and are available for inspection.

Procedures are based on those prescribed by the Health and Safety Laboratory of the U.S. Dep't of Energy, Edition 28, 1997, U.S. Environmental Protection Agency for Measurement of Radioactivity in Drinking Water, 1980, and the U.S. Environmental Protection Agency, EERF, Radiochemical Procedures Manual, 1984.

Environmental, Inc., Midwest Laboratory has a comprehensive quality control/quality assurance program designed to assure the reliability of data obtained. Details of the QA Program are presented elsewhere (Environmental, Inc., Midwest Laboratory, 2018). The QA Program includes participation in lnterlaboratory Comparison (crosscheck) Programs. Results obtained are presented in Appendix A.

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4.0 FIGURES AND TABLES 13

Figure 4-1. Sampling locations, Kewaunee Power Station.

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Table 4.1. Sampling locations. Kewaunee Power Station.

Distance (miles)b Code Type*

and Sector Location K-1 I

Onsile K-1b I

0.12N Middle Creek K-1c I

0.10 N 500' north of condenser discharge K-1d 0.10 E Condenser discharge K-1e 0.12 S South Creek K-1f 0.12S Maintenance Waste Oil and Material Storage Building K-1h 0.12 NW North Well K-1j 0.10S 500' south of condenser discharge K-1m 0.15N ISFSI East K-1o 0.16N ISFSI North K-1q 0.16N ISFSIWest K-1r 0.13 N ISFSIWest K-1t 0.10 ESE Gatehouse K-1u I

0.05SSW Maintenance Building K-2 C

8.91 NNE WPS Operations Building in Kewaunee K-3° 1/C 5.9 N Lyle and John Siegmund Farm, N2815 Hwy 42, Kewaunee K-5 3.2NNW Ed Papi ham Farm, E4160 Old Settlers Rd, Kewaunee K-8 4.85WSW St. Isadore the Farmer Church, 18424 Tisch Mills Rd, Tisch Mills K-9 C

11.5 NNE Green Bay Municipal Pumping Station, six miles east of Green Bay (sample source is Lake Michigan from Rostek Intake two miles north of Kewaunee.

K-13 C

3.0SSW Rand's General Store, Two Creeks K-17 4.0W Klimesh's' Farm, N885 Tk B, Kewaunee K-23a 0.5W 0.5 miles west of plant, Kewaunee site K-23b 0.6 N 0.6 miles north of plant, Kewaunee site K-25 1.9SW Wotachek Farm, 3968 E. Cty Tk BB, Two Rivers K-26 C

9.1 SSW Wilfert Farms Vegetable Stand (9.1 miles south of "BB")

K-27 I

1.53 NW Schleis Farm, E4298 Sandy Bay Rd, Kewaunee K-30 0.8 N End of_ site boundary K-34 2.7 N Leon and Vicky Struck, N1549 Lakeshore Dr., Kewaunee K-35 C

6.71 ml. WNW Duane Ducat, N1215 Sleepy Hollow Rd., Kewaunee K-38 I

2.45mi.WNW Dave Sinkula Farm, N890 Town Hail Road, Kewaunee K-39 3.46mi. N Francis Wojta, N1859 Lakeshore Dr., Kewaunee K-43 2.71 SSW Gary Maigatter Property, 17333 Hwy 42, Two Rivers a I ::: indicator; C = control b Distances are measured from reactor stack.

c Location K-3 Is an indicator for ambient radiation and a control for soil, cattle feed, and grass.

16

• • * * * * * * * * * * * * * * * * * * * * * * * * * * *

• i.

e I

Table 4.2. Type and frequency of collection

• Location Weeklv Monthlv Quarterlv Semiannuallv Annuallv K-1b SW GR 8 K-1c ssn K-1d SW Fl" K-1e SW K-1f APg GR 8

TLD so K-1h WW K-1i ssb K-1m TLD K-1o TLD K-1a TLD K-1r TLD K*1t WWh K-1u WW" K-2 AP 9 TLD K-3 GR 8 TLD so CFd K-5 GR" TLD CFd K-8 APg TLD K-9 sw 1 ssb K-13 WW K-17 TLD K-23a BLV 8 K-23b BLVll K-25 TLD K-26 BLV 0

K-27 TLO K-30 TLD K-34 GR 8

so CFd K-35 GR 8

so CF 0

K-38 GR 8

so CF a K-39 GR 3 TLD CF 11 K-43 AP 0 TLD

• Three times a year, second (Apn1, May, June), third (July, August, September), and fourth (October, November, December) quarters o To be collected In May and November oAnnually in the third quarter (July, August, or September).

• First(January, February or March) quarter only.

,Allemate, since milk sampling ls no longer performed.

1 Two samples, raw and treated g The frequency may be Increased dependent on the dust loading *

~ Well water shall be taken when this source Is tapped for drinking purposes In areas where the hydraulic gradient or recharge properties are suitable for contamination

• Tabla4.3, Sample Codes:

Code Descrlpl)on AP Airborne particulates BLV Broad leaf vegetation CF Cattle feed Fl Fish GR Grass so Soll SW Surface water ss Shoreline sediment no Thermoluminescent dosimeter WW Well water 17

Table 4.4. Sampling Summary, January-December, 2019.

Sample Type Air Environment TLD's Airborne particulates Terre~di!I Environment Well water Broad Leaf Vegetation Cattle Feed Grass Soll e,guatlc Emdconment Surface water Fish Shoreline sediments Collection Type and Frequency 8 C/Q crw GIQ GIA G/A GITA G/SA G/M G/A G/SA

• Type of collection is coded as follows: C = continuous; G = grab.

Number of Locations 15 4

4 3

6 8

5 4

1 3

Frequency ls coded as follows: W = weekly; BW = bl-weekly; SM = semimonthly; M = monthly; Q ::: quarterly; SA"' semiannually; TA = three times per year; A= annually.

18 Number of Samples Collected 60 204 16 3

12 24 10 29 1

6 Number of Samples Missed 0

0 0

0 0

0 0

1 0

0

Table 4.5 Environmental Radiation Monitoring Program Summary

• Name of Facility Location of Facility Type and Sample Type Number of (Units)

Analyses*

TLDs (Quarterly)

Gamma 44 (mR/91days)

TLDs, Quarterly 16 (Protected Area)

(mR/91days)

Airborne GB 204 Particulates (pCl/m3)

GS 16 Be-7 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 Ce-144 Kewaunee Power Station Kewaunee County, Wisconsin (County, State}

Indicator Locations MDCb Mean (F) 0 Range*

6.2' 15.8 (40/40)

(12.1-18.4) 8.2' 98.7 (16/16)

(17.4-189.5) 0.010 0.021 (153/153)

(0.007-0.051) 0,020 0.073 (12/12)

(0.057-0.095) 0,0019

<MOC 0.0029

<MOC 0.0019

<MDC 0.0095

<MDC 0.0016

<MDC 0.0012

<MDC 0.0027

<MOC 0.0089

<MDC 19 Docket No.

..;50;.;..;;*3;.;:05;._ __ ~~~-

Reporling Period January-December, 2019 Locatlon with Highest Control Number Annual Mean Locations Non*

Mean (F) 0 Mean (F) 0 Routine LocatJond Range0 Range*

Results" 0

K-17,Klimesh's 17.6 (4/4) 16.6 (4/4)

Farm (16.3-18.2)

(16.1-17.4) 4.0W K-1m, ISFSI E 185.2 (4/4) none 0

0.15N (177.0 -189.5)

K*B,SI. Isadore 0.021 (51/51) 0,019 (52/52) 0

Church, (0.009-0.047)

(0.001*0,044) 4.85WSW K-43,Malgatter 0.076 (4/4) 0.067 (4/4) 0 Property (0,059-0,096)

(0.054-0.085) 2.71 SSW

<MDC 0

<MDC 0

<MDC 0

<MDC 0

<MDC 0

<MDC 0

<MDC 0

<MDC 0

Table4.5 Environmental Radiation Monitoring Program Summary.

Name of Facility Location of Facility Sample Type Type and (Units)

Number of Analyses*

Well Water GA 12 (pCi/L}

GB 16 H-3 16 K-40 16 Sr-90 4

GS 16 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 Cs-134 Cs-137 Ba-La-140 Broad leaf GS 3

Vegetation Be-7 (pCi/gwet)

K-40 Nb-95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 ee.144 GB 12 Cattle feed (pCl/gwet)

Sr-90 12 GS 12 Be-7 K-40 Nb--95 Zr-95 Ru-103 Ru-106 Cs-134 Cs-137 Ce-141 Ce-144 Kewaunee Power Station Docket No.

50-305 Kewaunee County, Wisconsin (County, State}

Reporting Period January-Decembet, 2019 Indicator Location with Highest Control Number Locations Annual Mean Locations Non-MDCb Mean (F)0 Mean\\rJ Mean(F)"'

Routine Ranoe0 Localiond Range 0

Range*

Results" 5.1 3.6(3/12)

K-1h, North Well 5.1(1/1)

None 0

(1.6-5.1) 0.12mi, NW 3.4(5/12)

K-1h, North Well 3.7 (2.1-4.4) 0.12mi, NW 4.4(1/1) 1.1(2/4) 0 155

<MDC

<MDC 0

0.3 2.15(12/12)

K-1t, Gatehouse 3.30(4/4) 1.16(4/4) 0 (1.21-4.02) 0.10mi, ESE (2.68-4.02)

(1.03-1.31) 0.5

<MDC None 0

5.4

<MDC

<MDC 0

12.5

<MDC

<MDC 0

6.5

<MDC

<MDC 0

5.6

<:MDC

<MDC 0

16.8

<MDC

<MOC 0

9.4

<MDC

<MDC 0

6.7

<MOC

<MDC 0

5.6

<MOC

<MOC 0

8.0

<MDC

<MDC o

0.100 1.25(2/2)

K-23b 1.45(1/1)

<MDC 0

(1.05-1.45) 0.6 mi W. of Site 0.50 5.27(212)

K-23b 5.32(1/1) 1.68(1/1) 0 (5.21-5.32) 0.6 mi W. of Site 0.022

<MOC

<MDC 0

0.022

<MDC

<MDC 0

0.022

<MDC

<MDC 0

0.112

<MDC

<MDC o

0.020

<MDC

<MDC 0

0.014

<MOC

<MDC 0

0.038

<MDC

<MDC 0

0.181

<MDC

<MDC 0

0.008 1202(818)

K-3, Siegmund Fann 21.50(2/2) 16.57(4/4) 0 (4.03-23.07) 5.9mi.N (9.96*33.04)

(3.27-33.04) 0.023

<MDC K-3 Siegmund Farm 0.005 (1/2) 0.005 (1/4) 0 5.9mi.N 0.069 0.73(4/B}

K-35, Ducat Resldenoe 2.01 (1/1) 1.15(2/4) 0 (0.24-1.14) 6.71 ml. WNW (0.29-2.01) 0.50 9.39(8/8)

K-3, Siegmund Farm 15.97(212) 11.20(4/4) 0 (2.76-19.29) 5.9ml.N (6.83-25.11)

(2.17-25.11) 0.049

<MOC

<MDC 0

0.064

<MDC

<MDC 0

0.037

<MDC

<MOC 0

0.364

<MDC

<IIIIOC 0

0.038

<MDC

<MDC 0

0.041

<MDC

<MOC 0

0.070

<MOC

<MDC 0

0.313

<MDC

<MDC 0

20

Table 4.5 Environmental Radiation Monitoring Program Summary.

Kewaunee Power Station Docket No.

50-3D5 Name of Facility Location of Facility Kewaunee County, Wisconsin Reporting Period January-December, 2D19 (County, State)

Indicator Location with Highest Control Number Sample Type Type and Locations Annual Mean Locations Non-(Units)

Number of MDCb Mean(F)0 Mean(F)° Mean(F)° Routine Analyses*

Range0 Locationd Range Range0 ResulIs 0

Grass GB 24 D.10 6.64(18/18)

K-34,struck Residence 7.38(313) 6.43(6/6) 0 (pCi/gwet)

(3.37-9.67) 2.7miN (6.16-9.67)

(4.68-9.D3)

Sr-90 24 0.0D5 0.0D7 (1/18)

K-39,Wojta Residence D.007 (1/3)

<MDC 0

GS 24 3.46mi N Be-7 0.26 268(18/18)

K-35, Ducat Residence 4.76(2/2) 3.45(6/6) 0 (0.72-6.45) 6.71 mi WNW (4.15-5.96)

(0.55-5.96)

K-40 0.50 5.23 (18/18)

K-5, Pap!ham Fann 6.16(313) 5.02(6/6) 0 (1.68-7.49) 3.2mi.NNW (4.83-7.46)

(3.13-6.14)

Mn-54 0.023

<MDC

<MDC 0

Co-58 0.025

<MDC

<MDC 0

Co-60 0.019

<MDC

<MDC 0

Nb-95 0.027

<MDC

<MDC 0

Zr-95 0.036

<MDC

<MDC 0

Ru-103 0.030

<MDC

<MDC 0

Ru-106 0.292

<MDC

<MDC 0

Cs-134 0.026

<MDC

<MDC 0

Cs-137 0.024

<MDC

<MDC 0

Ce-141 0.050

<MDC

<MDC 0

Ce-144 0.200

<MDC

<MDC 0

Soll GA 10 5.6 6.99(6/6)

K-38, Sinkula Farm 8.35(212) 6.56(3/4) 0 (pCi/gdry)

(5.25-8.73) 2.4mi WNW (6.05-6.92)

GB 10 2.0 24.74(6/6)

K-3 Siegmund Farm 26.18 (2/2) 23.73(4/4)

D (16.48-28.33) 5.9mi.N (25.56-26. 79)

(21.24-26. 79)

Sr-90 10 0.066

<MDC

<MDC 0

GS 10 Be-7 0.43 241(1/6)

K-38, Sinkula Farm 2.41 (1/2)

<MDC 0

2.4mi WNW K-40 1.4 17.43 (6/6)

K-38, Sinkula Farm 19.81(2/2) 17.49(4/4) 0 (11.02-20.72) 2.4mi WNW (18.89-20.72)

(13.18-21.67)

Nb-95 0.095

<MDC

<MDC 0

Zr-95 0.074

<MDC

<MDC 0

Ru-103 D.054

<MDC

<MDC 0

Ru-106 0.268

<MDC

<MDC 0

Cs-134 0.022

<MDC

<MDC 0

Cs-137 0.031 0.08 (6/6)

K-3,Siegmund Fann 0.14 (2/2) 0.12(4/4) 0 (0.04-D.11) 5.9ml N (0.12-0.15)

(0.06-0.15)

Ce-141 0.135

<MDC

<MDC 0

Ce-144 0.157

<MDC

<MDC 0

21

Table 4.5 Environmental Radiation Monitoring Program Summary.

Name of Facility Location of Facility Sample Type Type and (Units)

Number of Analyses*

Surface Water GB (TR) 29 (pCI/L)

GS 29 Mn-54 Fe-59 Co-58 Co-60 Zn-65 Zr-Nb-95 Cs-134 Cs-137 Ba-La-140 H-S 20 Sr-90 20 K-40 29 Fish (Flesh)

GB 1

(pCl/gwet)

GS 1

K-40 Mn-54 Fe-59 Co-58 Co-50 Cs-134 Cs-137 Fish (Bones)

GB 1

(pCl/gwet)

Sr-90 1

Kewaunee Kewaunee

.

=O:.:OS::::in.:,__ __

(Cou Docket No.

50-305 Reporting Period...;;Ja..:.n..:.uary;:.::_--=o-ecem-.,..be-r,-=2:::,o-:-:19c--

Indicator Location with Highest Control Number Locations Annual Mean Locations Non-MDC" Mean (F}0 Mean (F)"

Mean (F}0 Routine Rangec Location~

Range" Range*

Results8 1.3 3.1 (16117)

K-1e, Middle Creek 4.0 (5/6) 1.2 (12/12) 0 (1.2 10.4) 0.12N (1.7-10.4)

(0.7 -1.6) 5.3

<MDC

<MDC 0

9.3

<MDC

<MDC 0

5.7

<MDC

<MDC 0

5.1

<MDC

<MDC 0

16.0

<MDC

<MDC 0

8.0

<MDC

<MDC 0

6.2

<MDC

<MDC 0

5.6

<MDC

<MDC 0

6.7

<MDC

<MDC 0

155 226 (1/12)

K-1d, Cond. Discharge 226 (1/4)

<MDC 0

0.10ml. E 0.6 0.5 (1/12)

K-1b, Middle Creek 0.5 (1/4)

<MDC 0

0.12 N 0.25 2.2 (16/17)

K-1b, Middle Creek 3.1 (5/6) 1.3 (10/12) 0 (0.3

• 6.2) 0.12 N (1.9-6.2)

(1.1

• 2.0) 0.5 3.51 (1/1)

K-1d, Cond. Discharge 3.51 (1/1)

None 0

0.10ml. E 0.5 4.02 (1/1}

K-1d, Cond. Discharge 4.02 (1/1)

None 0

0.10ml. E 0.016

<MDC None 0

0.070

<MDC None a

0.022

<MDC None 0

0.013

<MDC None 0

0.018

<MDC None a

0.019

<MDC N011e 0

0.5 5.18 (1/1)

K-1d, Cond. Discharge 5.18 (1/1)

None 0

0.10ml. E 0.16 0.11 (1/1)

K-1d, Cond. Discharge 0.11 (1/1)

None 0

0.10mi. E 22

Table 4.5 Environmental Radiation Monitoring Program Summary.

Kewaunee Power Station Docket No.

50-305 Name of Facllity Location of Facility Kewaunee County, Wisconsin Reporting Period January-December, 2019 (County, State)

Indicator Location with Highest Control Sample Type Type and Locations Annual Mean Locations (Units)

Number of MDCb Mean (F) 0 Mean (F) 0 Mean (F) 0 Analyses*

Range*

Locationd Ranae" Range" Shoreline GB 6

1.0 7.42 (4/4)

K-9, Rostok Intake 20.08 (2/2) 20.08 (2/2)

Sediments (4.65-10.03) 11.5 NNE (18.67-21.49)

(18.67-21.49)

Sr-90 6

0.060

<MDC

<MDC GS 6

K-40 0.5 4.60 (4/4)

K-9, Rostok Intake 11.74 (2/2) 11.74 (2/2)

(2.76-7.73) 11.5NNE (10.53-12.94)

(10.53-12.94)

Co-58 0.032

<MDC

<MDC Co-60 0.016

<MDC

<MDC Cs-134 0.021

<MDC

<MDC Cs-137 0.027 0.02 (2/4)

K-9, Rostok Intake 0.09 (1/2) 0.09 (1/2)

(0.02-0.02) 11.5 NNE

• GA = gross alpha, GB = gross beta, GS = gamma spectroscopy, TR = total residue.

b MDC = Minimum Detectable Concentration based on a 4.66 sigma counting error for background sample.

• Mean and range are based on detectable measurements only (i.e., >MDC) Fraction of detectable measurements at specified locations Is Indicated in parentheses (F).

d Locations are specified by station code (Table 4.1) and distance (miles) and direction relative to reactor site.

e Non-routine results are those which exceed ten times the control station value. If no control station value is available, the result is considered non-routine if it exceeds ten times the preoperatlonal value for the location.

Number Non-Routine Resultse 0

0 0

0 0

0 0

' For TLD's this value is the Quarterly Minimum Differential Dose(MDDo). See page 8 of this report for the details of how It is computed.

23

Table 4:6 Land Use Census The following table llsts an inventory of residence gardens :1!: 600 ft2 and milk animals found nearest the plant in each of the 10 meteorological sectors within a five mile radius of the Kewaunee Power station. (Figure 4-1)

Sector Township No.

Residence Garden Milk Animals Distance From Plant (miles)

A 24 X

1.12 A

12 X

3.71 A

1 X

4.62 B

24 X

1.01 B

18 X

2.12 B

18 X

2.70 R

26 X

0.96 R

23 X

X 2.16 Q

23 X

1.27 a

23 X

X 1.53 p

26 X

1.35 p

26 X

1.41 p

27 X

2.45 N

35 X

0.94 N

28 X

X 2.37 M

36 X

1.38 M

4 (Note2)

X 2.89 L

35 X

1.00 L

2 X

2.04 L

4 X

3.28 K

38 X

(Note 3}

0.91 K

15 X

3.40 J

11 X

(Note4)

(Note4) 2.72 Note 1. Bold Type denotes change from previous census.

Note 2. There were no gardens located in Sector M Within five miles of the Kewaunee Power station.

Note 3. There were no gardens located In Sector K within five miles ofthe Kewaunee Power Station.

Location ID K-34 K-27 K-38 Note 4. There were no milk animals or gardens located in Sector J Within five miles of the Kewaunee Power Station.

24

5.0 REFERENCES

Arnold. J. R. and H. A. AI-Sallh. 1955. Berylllum-7 Produced by Cosmic Rays. Science 121: 451-453.

Eisenbud, M. 1963. Environmental Radioactivity, McGraw-HIii, New York, New York, pp. 213,275, and 276.

Gold, S., H. W. Barkhau, B. Shlein, and B. Kahn, 1964 Measurement of Naturally Occurring Radionuclides in Air, in the Natural Radiation Environment, University of Chicago Press, Chicago, Illinois, 369-382.

ATI Environmental, Inc., Midwest Laboratory.

---

'2001 to 2018. Annual Report. Radiological Monitoring Program for the Kewaunee Power Station, Kewaunee, Wisconsin, Final Report, Part II, Data Tabulations and Analysis, January - December 2000 -2016.

____ 1984 to 2000. (formerly Teledyne Brown Engineering Environmental Services, Midwest Laboratory)

Annual Reports. Radiological Monitoring Program for the Kewaunee Power Station, Kewaunee, Wisconsin, Flnal Report, Part II, Data Tabulations and Analysis, January* December 1983 through January-December 1999.

____ 1979 to 1983. (formerly Hazleton Environmental Sciences Corporation) Annual Reports. Radiological Monitoring for the Kewaunee Power Station, Kewaunee, Wisconsin, Final Report - Part II, Data Tabulations and

Analysis, January - December, 1978 through 1982.

____ 19TT to 1978. (formerly NALCO Environmental Sciences Corporation)

Annual Reports.

Radiological Monitoring for the Kewaunee Power Station, Kewaunee, Wisconsin, Final Report - Part II, Data Tabulations and Analysis, January-December, 1976 to 1977.

___ __,2018.

Quality Manual, Rev. 6, 20 July 2018.

___ __,2020.

Quality Control Procedures Manual, Rev. 4, 15 January 2020.

___ __,2012.

Quality Assurance Program Manual, Rev. 3, 14 November 2012.

___ __,2009.

Quality Control Program, Rev. 2, 12 November 2009.

Industrial BIO-TEST Laboratories, Inc. 1974.

Annual Report.

Pre-operational Radiological Monitoring Program for the Kewaunee Power Station. Kewaunee, Wisconsin. January - December 1973.

Industrial BIO-TEST Laboratories, Inc. 1975. Semi-annual Report. Radiological Monitoring Program for the Kewaunee Power Station, Kewaunee, Wisconsin. Jan. - June, 1975.

Kewaunee Power Station. 2019. Radiological Environmental Monitoring Manual (REMM). Revision 22, 01 April 2019 National Center for Radiological Health. 1968. Section 1. Milk Survelilance. Radlologlcal Health Data Rep., December 9:

730-746, National Council on Radiation Protection and Measurements. 1975. Natural Radiation Background In the United States.

NCRP Report No. 45.

Solon, L R., W. M. Lowder, A. Shambron, and H. Blatz. 1960. Investigations of Natural Environmental Radiation. Science.

131: 903-906.

U.S. Environmental Protection Agency, 2007.

Rad Net, formerly Environmental Radiation Ambient Monitoring System, Gross Beta In Air (WI) 1981 -2000.

Wilson, D.W., G. M. Ward, and J. E. Johnson, 1969. Environmental Contamination by Radioactive Materials. International Atomic Energy Agency, p. 125 American National Standards Institute/Health Physics Society (ANSI/HPS) N13.37 - 2014, Environmental Dosimetry-Criteria for 25

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ii.

I :e * * *

• NOTE:

APPENDIX A INTERLABORATORY AND INTRALABORATORY COMPARISON PROGRAM RESULTS Appendix A is updated four times a year. The complete appendix is included in March, June, September and December monthly progress reports only.

January, 2019 through December, 2019 System Design and Implementation.

A-1

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

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

Results in Table A-1 were obtained through participation in the 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.

Results in Table A-2 were obtained through participation in the New York Department of Health Environmental Laboratory Approval Program (ELAP) PT Table A-3 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-4 lists results of the analyses on in-house "spiked" samples for the past twelve months. All samples are prepared using NIST traceable sources. Data for previous years available upon request.

Table A-5 lists results of the analyses on in-house "blank" samples for the past twelve months. Data for previous years available upon request.

Table A-6 lists analytical results from the in-house "duplicate" program for the past twelve months. Acceptance is based on the each result being with 25% of the mean of the two results or the two sigma uncertanties of each result overlap.

The results In Table A-7 were obtained through participation in the Mixed Analyte Performance Evaluation Program.

Results in Table A-8 were obtained through participation in the MRAD PT Study Proficiency Testlng 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.

A-2

Attachment A ACCEPTANCE CRITERIA FOR "SPIKED" SAMPLES Analysis Ratio of lab result to known value.

I.

Gamma Emitters le 0.8 to 1.2 Strontium-89, strontium-90 0.8to 1.2 Potasslum-40 0.8 to 1.2 Gross alpha 0.5to 1.5 Gross beta 0.8to 1.2 Tritium 0.8 to 1.2 Radium-226, 0.7 to 1.3 Radium-228 Plutonium 0.Bto 1.2 lodine-129, lodine-131 0.8 to 1.2 Nickel-63, 0.7to 1.3 Technetium-99, Uranium-238 lron-55 0.Bto 1.2 other Analyses 0.8 to 1.2 A-3

TABLE A-1. lnterlaboratory Comparison Crosscheck program, Environmental Resource Associates (ERA) 8 RAD study Concentration (pCi/L)

Lab Code Date Analysis Laboratory ERA Control Result Result Limits Acceptance ERW-71 1/7/2019 Ba-133 97.9 :I: 4.5 99.5 84.1-109 Pass ERW-71 117/2019 Cs-134 45.4 :I: 3.1 49.1 39.5 -54.0 Pass ERW-71 1/7/2019 Cs-137 129 :1:6 125 112 -140 Pass ERW-71 1/7/2019 Co-60 98.1 :1:4.1 96.4 86.8 -108 Pass ERW-71 1/7/2019 Zn-65 80.4 :1:7.8 77.4 69.5 :1: 93.2 Pass ERW-73 1/7/2019 Gr. Alpha 22.2 :I: 1.6 21.8 10.9 - 29.5 Pass ERW-73 117/2019 Gr. Beta 46.4 :I: 1.4 55.7 38.1 - 62.6 Pass ERW-75 117/2019 Ra-226 7.19 +/-0.30 7.37 5.55 :I: 8.72 Pass ERW-75 117/2019 Ra-228 4.02 +/- 0.70 4.28 2.48 -5.89 Pass ERW-75 1/7/2019 Uranium 50.2 :1:2.9 68.2 55.7 -75.0 Fallb ERW-77 1/7/2019 H-3 2,129 :I: 158 2,110 1,740 -2,340 Pass ERW-397 2/11/2019 1-131 27.2 :I: 1.0 25.9 25.1 - 30.6 Pass ERW-1141 4/8/2019 Ra-226 7.58 +/- 0,53 7.15 5.39 - 8.48 Pass ERW-1141 4/8/2019 Ra-228 2.64 +/- 0.79 2.94 1.54 -4.35 Pass ERW-1141 4/8/2019 Uranium 67.0 +/-0.9 55.9 45.6 - 61.5 Fall0 ERW-2471 7/8/2019 Ba-133 -

66.5 +/-4.0 66.9 55.8 -73.6 Pass ERW-2471 7/8/2019 Cs-134 29.6 +/-2.6 32.0 25.1 - 35.2 Pass ERW-2471 7/8/2019 Cs-137 21.3 :1: 3.6 21.4 17.6 -26.7 Pass ERW-2471 7/8/2019 Co-60 99.9 +/-4.4 95.1 85.6 -107.0 Pass ERW-2471 7/8/2019 Zn-65 43.7 :1:6.2 41.2 35.3 -51.4 Pass ERW-2473 7/8/2019 Gr. Alpha 41.7 +/-2.1 70.6 37.1 -87.1 Pass ERW-2473 7/8/2019 Gr. Beta 57.0 :I: 1.6 63.9 44.2 -70.5 Pass ERW-2477 7/8/2019 Ra-226 16.2 +/- 0.5 18.5 13.8 - 21.1 Pass ERW-2477 7/8/2019 Ra-228 6.2 +/-0.8 8.2 5.2 -10.3 Pass ERW-2477 7/8/2019 Uranium 63.8 +/-3.6 68.3 55.8 - 75.1 Pass ERW-2479 7/8/2019 H-3 8,630 +/-200 16,700 14,600 -18,400 Faild ERW-2475 7/8/2019 1-131 33.6 +/- 1.3 29.6 24.6 - 34.6 Pass

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

b In order to get to the root cause of the above "Fall" resolution the U-232 tracer was standardized using a known concentration of NIST U-238 solution. A duplicate analysis was performed and the results obtained were well within the acceptance range (Known value for Total Uranium=68.2 pCI/L, acceptance range of (55.7-75 pCl/L). The results obtained were 63.3 pCI/L and 66.0 pCi/L respectively.

c The standardized U-232 value utilized on ERA sample ERW-1141 above was found to be estimated high due to Interferences In the U-238 solution causing ERW-1141 to fail the study. After performing LI-Isotopic chemistry on the NIST-Uranium solution to remove Interferences a more accurate U-232 tracer concentration was obtained.

The Uranium result in the subsequent ERA PT study was acceptable. See ERW-2477 Uranium result above.

d EIML's routine H-3 analysis does include a blank sample. The ERA provided blank was paired with a H-3 standard vial and EIML's blank was also paired with a standard vial. Inadvertently the efficiency was overestimated by a factor of 2.

This understated the calculated results by half. The result of reanalysis (17,400 pCI/L) is within the control limits for the study.

A-4

e *

• TABLE A-2. lnterlaboratory Comparison Crosscheck program, New York Department of Health (ELAP)8.

Concentration (pCi/L)

Lab Code Date Analysis Laboratory Assigned Acceptance Result Value Limits Acceptance Shipment 427R NYW-3472 9/17/2019 H-3 5250 +/-229 4991 4280 -5490 Pass NYW-3476 9/17/2019 GrossAtpha 18.0 +/-1.2 20.1 9.99 -27.5 Pass NYW-3476 9/17/2019 Gross Beta 22.7 +/- 1.0 27.2 17.1 -35.1 Pass NYW--3478 9/17/2019 1-131 18.7 +/- 1.B 15.6 12.8 -19.3 Pass NYW-3480 9/17/2019 Ra-226 5.02 +/-0.37 4.41 3.37 - 5.43 Pass NYW-3480 9/17/2019 Ra-228 16.0 :1:1.9 18.3 12.3 -21.9 Pass NYW-3480 9/17/2019 Uranium 13.7 +/-0.9 13.9 11.0 -15.7 Pass NYW--3482 9/17/2019 Co-60 63.9 :1:4.0 63.0 56.7 - 71.8 Pass NYW-3482 9/17/2019 Zn-65 108 +/-9 113 97.2 -129 Pass NYW-3482 9/17/2019 Ba-133 53.3 +/-4.3 61.9 51.4 - 68.2 Pass NYW-3482 9/17/2019 Cs-134 47.2 +/-3.4 55.8 45.1 - 61.4 Pass NYW-3482 9/17/2019 Cs-137 52.0 +/-4.6 53.8 48.4 - 62.0 Pass 8 Results obtained by Environmental, Inc., Midwest Laboratory as a particlpanl in the crosscheck program for proficiency tesllng In drinklng water conducted by the New York Department of Health Laboratory Approval Program(NY ELAP)

• A-5

TABLE A-3. Thermoluminescent Dosimetry, (TLD, CaSO4: Dy Cards).a mrem Lab Code Irradiation Delivered Reportedb Performancec Date Description Dose Dose Quotient (P)

Environmental. Inc.

Group 1 2019-1 11/11/2019 Spike 1 126.0 128.3 0.02 2019-1 11/11/2019 Spike 2 126.0 122.2

-0.03 2019-1 11/11/2019 Spike 3 126.0 122.5

-0.03 2019-1 11/11/2019 Spike 4 126.0 119.3

-0.05 2019-1 11/11/2019 Spike 5 126.0 116.9

-0.07 2019-1 11/11/2019 Spike 6 126.0 109.5

-0.13 2019-1 11/11/2019 Spike 7 126.0 114.6

-0.09 2019-1 11/11/2019 Spike 8 126.0 121.8

-0.03 2019-1 11/11/2019 Spike 9 126.0 120.2

-0.05 2019-1 11/11/2019 Spike 10 126.0 126.4 0.00 2019-1 11/11/2019 Spike 11 126.0 125.0

-0.01 2019-1 11/11/2019 Spike 12 126.0 109.0

-0.13 2019-1 11/11/2019 Spike 13 126.0 123.4

-0.02 2019-1 11/11/2019 Spike 14 126.0 118.2

-0.06 2019-1 11/11/2019 Spike 15 126.0 134.3 0.07 2019-1 11/11/2019 Spike 16 126.0 120.1

-0.05 2019-1 11/11/2019 Spike 17 126.0 131.3 0.04 2019-1 11/11/2019 Spike 18 126.0 120.4

-0.04 2019-1 11/11/2019 Spike 19 126.0 121.1

-0.04 2019-1 11/11/2019 Spike 20 126.0 122.8

-0.03 Mean (Spike 1-20) 121.4

-0.04 Passd Standard Deviation (Spike 1-20) 6.2 0.05 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 Environmental Inc. 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)K8= 1.20. mrem/cGy = 1000.

c Performance Quotient (P) is calculated as ((reported dose - conventially true value) + conventlally true value) where the conventially 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.

A-6

TABLE A-3. Thermoluminescent Dosimetry, (TLD, CaSO4: Dy Cards). 0 mrem Lab Code Irradiation Delivered Reportedb Performancec Date Description Dose Dose Quotient (P)

Environmental, Inc.

Group 2 2019-2 11/11/2019 Spike 21 79.0 78.8 0.00 2019-2 11/11/2019 Spike 22 79.0 71.8

-0.09 2019-2 11/11/2019 Spike 23 79.0 75.8

-0.04 2019-2 11/11/2019 Spike 24 79.0 71.3

-0.10 2019-2 11/11/2019 Spike 25 79.0 74.5

-0.06 2019-2 11/11/2019 Spike 26 79.0 71.6

-0.09 2019-2 11/11/2019 Spike 27 79.0 73.3

-0.07 2019-2 11/11/2019 Spike 28 79.0 74.0

-0.06 2019-2 11/11/2019 Spike 29 79.0 73.8

-0.07 2019-2 11/11/2019 Spike 30 79.0 76.0

-0.04 2019-2 11/11/2019 Spike 31 79.0 76.7

-0.03 2019-2 11/11/2019 Spike 32 79.0 77.8

-0.02 2019-2 11/11/2019 Spike 33 79.0 75.2

-0.05 2019-2 11/11/2019 Spike 34 79.0 69.1

-0.13 2019-2 11/11/2019 Spike 35 79.0 68.7

-0.13 2019-2 11/11/2019 Spike 36 79.0 68.2

-0.14 2019-2 11/11/2019 Spike37 79.0 67.9

-0.14 2019-2 11/11/2019 Spike 38 79.0 68.9

-0.13 2019-2 11/11/2019 Spike 39 79.0 78.1

-0.01 2019-2 11/11/2019 Spike 40 79.0 68.6

-0.13 Mean (Spike 21-40) 73.0

-0.08 Passd Standard Deviation (Spike 21-40) 3.6 0.05 Passd a TLD's were irradiated by the University of Wisconsin-Madison Radiation CalfbraUon Laboratory following ANSI N 13.37 protocol from a known air kerma rate. TLD's were read and the results were submitted by Environmental Inc. to the University of Wisconsin-Madison Radiation Calibration Laboratory for comparison to the delivered dose.

b Reported dose was converted from exposure (R) to Alr 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*(1 O)Ka = 1.20. mrem/cGy = 1000.

c Performance Quotient (P) is calculated as ((reported dose - conventially true value) + conventfally true value) where the convenllally 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.

A-7

TABLE A-4. In-House "Spiked" Samples Concentration*

Lab Codeb Date Analysis Laboratory results Known Control Ratio 2s, n=1° Activity Limitsd Acceptance Lab/Known SPW-61 1/5/2019 Ra-226 13.4 +/- 0.4 12.3 9.8 -14.8 Pass 1.09 SPW-118 1/14/2019 H-3 15,463 +/-369 16,507 13,206 - 19,808 Pass 0.94 SPW-178 1/16/2019 Ra-228 17.7+/-2.1 15.1 12.10 -18.14 Pass 1.17 SPW-199 1/18/2019 Sr-90 17.6+/-1.2 17.9 14.3 -21.5 Pass 0.98 SPW-250 1/24/2019 Ni-63 356.3 +/-44.5 465 326 -605 Pass 0.77 SPW-256 1/15/2019 Ra-226 12.0 +/- 0.4 12.3 9.8 -14.8 Pass 0.98 SPW-271 3/18/2019 H-3 22,035 +/-450 21,700 17,360 - 26,040 Pass 1.02 SPW-281 1/25/2019 Ra-226 11.6 +/- 0.4 12.3 9.8 -14.8 Pass 0.94 W-012119 4/29/2016 Cs-134 37.3 +/- 10.6 36.2 29.0 -43.4 Pass 1.03 W-012119 4/29/2016 Cs-137 82.7 +/- 8.0 71.9 57.5 -86.3 Pass 1.15 W-012319 4/29/2016 Cs-134 33.4 +/- 10.1 36.2 25.3 -47.1 Pass 0.92 W-012319 4/29/2016 Cs-137 79.1 +/- 9.6 71.9 57.5 -86.3 Pass 1.10 W-012519 4/29/2016 Cs-134 35.0 +/-7.7 36.2 29.0 -43.4 Pass 0.97 W-012519 4/29/2016 Cs-137 79.2 +/-7.9 71.9 57.5 - 86.3 Pass 1.10 W-012919 4/29/2016 Cs-134 32.3 +/- 8.3 36.2 29.0 -43.4 Pass 0.89 W-012919 4/29/2016 Cs-137 82.3 +/- 8.3 71.9 57.5 -86.3 Pass 1.14 SPW-370 3/19/2019 H-3 21,689 +/- 444 21,700 17,360 - 26,040 Pass 1.00 SPW-400 1/31/2019 Ra-226 11.6 +/- 0.4 12.3 8.6 -16.0 Pass 0.95 SPW-461 2/12/2019 Ra-226 11.1 +/- 0.4 12.3 8.6 -16.0 Pass 0.90 W-020619 4/26/2016 Cs-134 35.0 +/- 14.9 36.2 29.0 -43.4 Pass 0.97 W-020619 4/29/2016 Cs-137 72.8 +/- 8.9 71.9 57.5 -86.3 Pass 1.01 W-020819 4/26/2016 Cs-134 36.7 +/- 8.6 36.2 29.0 -43.4 Pass 1.01 W-020819 4/29/2016 Cs-137 76.7 +/- 8.7 71.9 57.5 -86.3 Pass 1.07 SPW-568 2/21/2019 Ra-226 10.3 +/- 0.3 12.3 8.6 -16.0 Pass 0.84 W-021319 4/29/2016 Cs-134 37.7 +/- 11.5 36.2 29.0 -43.4 Pass 1.04 W-021319 4/26/2016 Cs-137 75.8 +/- 9.6 71.9 57.5 -86.3 Pass 1.05 SPW-469 3/19/2019 H-3 21,696 +/- 447 21,700 17,360 - 26,040 Pass 1.00 SPW-600 3/6/2019 H-3 20,710 +/- 425 21,700 17,360

• 26,040 Pass 0.95 SPW-837 3/21/2019 Ra-228 11.7 +/- 1.5 15.1 10.58 -19.66 Pass 0.78 SPW-709 3/19/2019 H-3 20,369 +/-421 21,700 17,360 -26,040 Pass 0.94 SPW-818 3/19/2019 H-3 20,457 +/- 424 21,700 17,360 -26,040 Pass 0.94 SPW-845 3/22/2019 U-234 15.1 +/- 0.5 13.6 9.5 -17.7 Pass 1.11 SPW-845 3/22/2019 U-238 15.3 +/- 0.5 13.1 9.2 -17.0 Pass 1.17 SPW-934 3/19/2019 H-3 20,487 +/- 421 21,700 17,360 - 26,040 Pass 0.94 SPW-1061 3/1/2019 Ra-226 10.6 +/- 0.3 12.3 8.6 -16.0 Pass 0.86 SPW-1091 4/10/2019 H-3 20,323 +/-421 21,700 17,360 - 26,040 Pass 0.94 SPW-1093 4/8/2019 Ra-228 14.9 +/- 1.9 15.1 10.6 -19.6 Pass 0.98 SPW-1267 4/16/2019 H-3 20,302 +/-421 21,700 17,360 - 26,040 Pass 0.94 SPW-1339 4/18/2019 H-3 19,924 +/-417 21,700 17,360 - 26,040 Pass 0.92 SPW-1403° 4/25/2019 Gr. Alpha 56.7 +/- 2.6 72.4 36.2 -108.6 Pass 0.78 SPW-1403° 4/25/2019 Gr. Beta 43.2 +/- 1.4 54.8 43.8 -65.8 Fail 0.79 SPW-1427 4126/2019 H-3 20,119 +/-418 21,700 15,190 - 28,210 Pass 0.93 SPW-1537 5/6/2019 Sr-90 19.9:1:1.2 17.9 14.3

• 21.5 Pass

• 1.11 W-050719 4/29/2016 Cs-134 38.5 +/- 9.0 36.2 29.0 -43.4 Pass 1.06 W-050719 4/26/2016 Cs-137 85.2 +/- 8.5 71.9 57.5 - 86.3 Pass 1.18 SPW-1582 5/9/2019 H-3 20,492 +/-423 21,700 15,190 -28,210 Pass 0.94 A-8

TABLE A-4. In-House "Spiked" Samples Concentration" Lab Codeb Date Analysis Laboratory results Known Control Ratio 2s, n=1° Activity Llmltsd Acceptance Lab/Known W-050919 4/29/2016 Cs-134 37.4 +/- 8.9 36.2 29.0 -43.4 Pass 1.03 W-050919 4/26/2016 Cs-137 81.5 +/- 7.8 71.9 57.5 -86.3 Pass 1.13 SPW-1596 5/8/2019 Ra-228 14.1 +/-1.7 15.1 10.6 -19.6 Pass 0.94 W-051419 4/29/2016 Cs-134 36.2 +/- 11.7 36.2 29.0 -43.4 Pass 1.00 W-051419 4/26/2016 Cs-137 75.8 +/- 10.0 71.9 57.5 -86.3 Pass 1.05 SPW-1676 5/17/2019 H-3 20,233 +/-420 21,700 15, 100 - 28;210 Pass 0.93 SPW-1799 5/20/2019 H-3 20,428 :!: 422 21,700 15,190 - 28,210 Pass 0.94 SPW-1858 5/28/2019 H-3 20,367 +/- 522 21,700 15,190 -28,210 Pass 0.94 SPW-1890 5/30/2019 H-3 20,206 +/-419 21,700 15,190 - 28,210 Pass 0.93 SPW-2014 5/31/2019 Ra-226 11.9:!:0.3 12.3 8.6 -16.0 Pass 0.97 SPW-2030 6/12/2019 Ni-63 377 :!:45 464.8 325 -604 Pass 0.81 SPW-2093 6/18/2019 H-3 20,158 +/-418 21,700 17,360 - 26,040 Pass 0.93 W-062419 4/29/2016 Cs-134 33.0 +/- 12.4 36.2 29.0 -43.4 Pass 0,91 W-062419 4/26/2016 Cs-137 66.0 +/- 10.4 71.9 57.5 - 86.3 Pass 0.92 SPW-2338 6/26/2019 H-3 20,032 +/-417 21,700 17,360 - 26,040 Pass 0.92 SPW-2552 7/1/2019 Gr. Alpha 20.4 :!: 1.5 21.8 10.9 -32.7 Pass 0.94 SPW-2552 7/1/2019 Gr. Beta 46.1 +/- 1.3 55.7 44.6 -66.8 Pass 0.83 W-072619 4/29/2016 Cs-134 36.3 +/- 9.2 36.2 29.0 -43.4 Pass 1.00 W-072619 4/26/2016 Cs-137 79.7 +/- 7.6 71.9 57.5 -86.3 Pass 1.11 SPW-3188 7/30/2019 Ra-226 11.9+/-0.3 12.3 8.6 -16.0 Pass 0.97 SPW-2947 8/9/2019 H-3 20,128 +/-425 21,700 17,360

• 26,040 Pass 0.93 SPW-3003 8/14/2019 H-3 20,588 +/-435 21,700 17,360 -26,040 Pass 0.95 W-081519 4/26/2019 Cs-134 36.2 +/- 9.2 36.2 29.0 -43.4 Pass 1.00 W-081519 4/26/2019 Cs-137 78.1 +/- 8.4 71.9 57.5 -86.3 Pass 1.09 W-082119 4/26/2019 Cs-134 32.8 +/- 9.1 36.2 29.0 -43.4 Pass 0.91 W-082119 4/26/2019 Cs-137 79.1 +/- 7.9 71.9 57.5 -86.3 Pass 1.10 SPW-3151 8/26/2019 H-3 20,329 +/-428 21,700 17,360 - 26,040 Pass 0.94 W-082619 4/26/2019 Cs-134 33.3 +/- 17.8 36.2 29,0 -43.4 Pass 0.92 W-082619 4/26/2019 Cs-137 82.6 +/- 13.2 71.9 57.5 -86.3 Pass 1.15 W-082719 4/26/2019 Cs-134 33.9 +/- 7.0 36.2 29.0 -43.4 Pass 0.94 W-082719 4/26/2019 Cs-137 81.4 +/- 6.0 71.9 57.5 -86.3 Pass 1.13 SPW-3359 8/30/2019 Gr.Alpha 54.2 +/- 0.3 72.4 36.2 -108.6 Pass 0.75 SPW-3359 8/30/2019 Gr. Beta 59.7 +/- 0.2 54.8 43.8 -65.8 Pass 1.09 SPW-3323 9/6/2019 Ra-228 12.7 +/- 1.8 15.1 10.6 -19.6 Pass 0.84 W-091019 4/26/2019 Cs-134 31.0+/-11.3 36.2 29.0 -43.4 Pass 0.86 W-091019 4/26/2019 Cs-137 80.5 +/- 10.0 71.9 57.5 -86.3 Pass 1.12 SPW-3349 9/10/2019 H-3 19,851 +/-422 21,700 17,360

• 26,040 Pass 0.91 SPW-3410 9/13/2019 H-3 20,267 +/-431 21,700 17,360 -26,040 Pass 0.93 W-091719 4/26/2019 Cs-134 39.3 +/- 12.6 36.2 29.0 -43.4 Pass 1.09 W-091719 4/26/2019 Cs-137 81.1 :!:9.9 71.9 57.5 -86.3 Pass 1.13 SPW-3450 9/17/2019 H-3 20,036 +/- 427 21,700 17,360 -26,040 Pass 0.92 W-091919 9/19/2019 Cs-134 40.0 +/- 10.7 36.2 29.0 -43.4 Pass 1.10 W-091919 9/19/2019 Cs-137 71.0 +/-8.7 71.9 57.5 -86.3 Pass 0.99 SPW-3569 8/28/2019 Ra-226 11.9 +/-0.3 12.3 8.6 -16.0 Pass 0.97 SPW-3571 9/27/2019 H-3 21,026 +/-440 21,700 17,360 - 26,040 Pass 0,97 A-9

TABLE A-4. In-House "Spiked" Samples Concentration*

Lab Codeb Date Analysis Laboratory results Known Control 2s, n=1° Activi~

Limitsd Acceetance SPW-3615 10/1/2019 Ra-228 18.9 +/-2.5 14.9 10.4 - 19.3 Pass SPW-3706 10/8/2019 H-3 20,082 +/-427 21,700 17,360 - 26,040 Pass SPW-4093 10/14/2019 Gr.Alpha 20.8 +/-0.1 19.7 9.9 - 29.6 Pass SPW-4093 10/14/2019 Gr. Beta 63.2 +/- 0.1 61.1 48.9 -73.3 Pass SPW-4095 10/24/2019 H-3 20,684 +/-432 21,700 17,360 - 26,040 Pass SPW-4144 9/26/2019 Ra-226 12.8 +/- 0.3 12.3 8.6 -16.0 Pass W-091719 3/19/2018 H-3 22,291 +/- 470 21,700 17,360 -26,040 Pass SPW-4239 10/30/2019 Ra-228 12.4 +/- 1.8 14.9 10.4 -19.3 Pass SPW-4254 11/8/2019 H-3 20,187 +/-427 21,700 17,360 - 26,040 Pass SPW-4368 11/14/2019 H-3 20,386 +/- 429 21,700 17,360 -26,040 Pass SPW-4370 10/30/2019 Ra-226 12.8 +/- 0.4 12.3 8.6 -16.0 Pass SPW-4472 11/21/2019 H-3 20,479 +/- 432.0 21,700 17,360 - 26,040 Pass SPW-4474 11/22/2019 Sr-90 18,9 +/- 1.2 17.9 14.3 - 21.5 Pass SPW-4602 12/5/2019 H-3 20,187 +/-429 21,700 17,360 -26,040 Pass W-121119 3/19/2018 H-3 22,734 +/-477 21,700 17,360 - 26,040 Pass SPW-4663 12/11/2019 Ra-228 11.2 +/- 1.6 14.9 10.4 -19.3 Pass SPW-4688 12/13/2019 H-3 20,506 +/- 431 21,700 17,360 - 26,040 Pass SPW-4734 11/15/2019 Ra-226 12.6 +/- 0.3 12.3 8.6 -16.0 Pass SPW-4743 12/5/2019 Ra-226 10.0 +/- 0.3 12.3 8.6 -16.0 Pass SPW-4745 12/19/2019 H-3 20,067 +/- 427 21,700 17,360 - 26,040 Pass SPW-4889 12/19/2019 Ra-226 9.3 +/- 0.3 12.3 8.6 -16.0 Pass SPW-4636 12/27/2019 Tc-99 94.3 +/- 8.2 90.3 72.2 -108.4 Pass SPW-4899 1/3/2020 H-3 20,386 +/-432 21,700 17,360 - 26,040 Pass

• Liquid sample results are reported In pCi/Liter, air filters ( pCi/m3), charcoal (pCl/charcoal canister), and solid samples (pCilkg).

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

• Results are based on single determinations.

d Control limits are listed In Attachment A of this report.

Ratio Lab/Known 1.27 0.93 1.06 1.03 0.95 1.04 1.03 0.84 0.93 0.94 1.04 0.94 1.06 0.93 1.05 0.75 0.94 1.02 0.81 0.92 0.76 1.04 0.94 0 The LCS sample was prepared from an Environmental Resource Associates (ERA) sample of known activity. While the analysis did satisfy the acceptance criteria of the ERA study from which It was sourced, It did not satisfy EIML's internal LCS acceptance criteria. An investigallon is in process to determine the reason for the low bias and to evaluate the acceptance criteria.

NOTE: For fish, gelatln Is used for the spike matrix. For vegetation, cabbage is used for the spike matrix.

A-10

TABLE A-5. In-House "Blank" Samples Concentration" Lab Codeb Sample Date Analysisc Laborato!}'. results (4.66cr)

Acceptance T~ee LLD Activi!i Criteria (4.66 <1)

SPW-5449 Water 1/7/2019 Gr. Alpha 0.76

-0.30 +/- 0.52 2

SPW-5449 Water 1ll/2019 Gr. Beta 0.42 0.19 :I: 0.31 4

SPW-34 Water 1/7/2019 1-131 0.36 0.13:1:0.18 1

SPW-60 Water 11/5/2018 Ra-226 0.03 0.15 :I: 0.03 2

SPW-119 Water 1/14/2019 H-3 148 42 :f:80 200 SPW-177 Water 1/16/2019 Ra-228 0.93

-0.10 :I: 0.42 2

SPW-198 Water 1/18/2019 Sr-89 0.67 0.25 +/-0.50 5

SPW-198 Water 1/18/2019 Sr-90 0.67

-0.16 +/- 0.29 SPW-249 Water 1/24/2019 Ni-63 67 31 +/-41 200 SPW-255 Water 1/15/2019 Ra-226 0.04 0.16 :1:0.03 2

SPW-280 Water 1/25/2019 Ra-226 0.06

-0.09 :1:0.14 2

SPW-399 Water 1/31/2019 Ra-226 0.03 0.15 :1:0.03 2

SPW-460 Water 2/12/2019 Ra-226 0.03 0.15 :1:0.02 2

SPW-567 Water 2/21/2019 Ra-226 0.03 0.13 :1:0.02 2

SPW-844 Water 3/22/2019 U-234 0.19 0.04 :1:0.14 1

SPW-844 Water 3/22/2019 U-238 0.19 0.00 :f:0.11 1

SPW-836 Water 3/21/2019 Ra-228 0.74 0.53 :f: 0.41 2

SPW-1060 Water 3/31/2019 Ra-226 0.04

-0.02 :I: 0.03 2

SPW-1090 Water 4/10/2019 H-3 155

-14 :1:72 200 SPW-1092 Water 4/8/2019 Ra-228 0.82 0.75 +/-0.46 2

SPW-1266 Water 4/16/2019 H-3 152 67 :J:74 200 SPW-1338 Water 4/18/2019 H-3 152 86 :1:79 200 SPW-1366 Waler 4/8/2019 Ra-226 0.03 0.09 :1:0.03 2

SPW-1426 Water 4/26/2019 H-3 156 34 +/-75 200 SPW-1536 Water 5/6/2019 Sr-89 0.66

-0.07 +/-0,45 5

SPW-1536 Water 5/6/2019 Sr-90 0.59

-0.10 +/- 0.26 1

SPW-1581 Water 5/9/2019 H-3 147 73 :l:77 200 SPW-1644 Water 4/22/2019 Ra-226 0.02 0.15 :I: 0.02 2

SPW-1675 Water 5/17/2019 H-3 154

-30 :I: 71 200 SPW-1798 Water 5/20/2019 H-3 149 24 :1:73 200 SPW-1857 Water 5/28/2019 H-3 150 54 +/-74 200 SPW-1889 Water 5/30/2019 H-3 152 45 +/-73 200 SPW-2013 Water 5/31/2019 Ra-226 0.01 0.13 +/-0.02 2

SPW-2029 Water 6/12/2019 Ni-63 66 10 :1:40 200 SPW-2092 Water 6/18/2019 H-3 154

-42 +/-70 200 SPW-2237 Water 6/26/2019 H-3 150

-9 +/-69 200 SPW-2107 Water 6/18/2019 1-131 0.16 0.04 +/- 0.09 1

SPW-2152 Water 6/19/2019 1-131 0.16 0.04 :1:0.09 A-11

TABLE A-5. In-House "Blank" Samples Concentration" Lab Codeb Sample Date Analysisc Laborato!X results (4.66crl Acceptance Type LLD Actlvtti Criteria (4.66 cr)

SPW-3187 Water 7/30/2019 Ra-226 0.02 0.17 :1:0.02 2

SPW~2924 Water 8/6/2019 Sr-89 0.71

-0.06 :1:0.57 5

SPW-2924 Water 8/6/2019 Sr-90 0.59 0.08 :1:0.28 1

SPW-2946 Water 8/9/2019 H-3 152 33 +/-72 200 SPW-3002 Water 8/14/2019 H-3 152

-22 :I: 74 200 SPW-3150 Water 8/26/2019 H-3 151 115 +/-77 200 SPW-3358 Water 8/30/2019 Gr.Alpha 0.44

-0.08 :I: 0.30 2

SPW-3358 Water 8/30/2019 Gr. Beta 0.72

-0.31 +/- 0.49 4

SPW-3568 Water 8/28/2019 Ra-226 0.03 0.16 :1:0.03 2

SPW-3322 Water 9/6/2019 Ra-228 0.82 0.46 +/-0.43 2

SPW-3348 Water 9/10/2019 H-3 150 107 +/-76 200 SPW-3409 Water 9/13/2019 H-3 154 133 +/-79 200 SPW-3449 Water 9/17/2019 H-3 147 102 +/-79 200 SPW-3570 Water 9/27/2019 H-3 151 70 +/-77 200 SPW-3614 Water 10/1/2019 Ra-228 1.29 1.03 :I: 0.73 2

SPW-3705 Water 10/8/2019 H-3 147 107 :I: 77 200 SPW-4238 Water 10/30/2019 Ra-228 0.99 0.58 +/- 0.52 2

SPW-4253 Water 11/8/2019 H-3 151 80 +/- 76 200 SPW-4367 Water 11/14/2019 H-3 154 42 :1:74 200 SPW-4369 Water 10/30/2016 Ra-226 0.03 0.14 :I: 0.03 2

SPW-4471 Water 11/21/2019 H-3 155 81 +/-77 200 SPW-4474 Water 11/21/2019 C-14 12 0 +/-7 200 SPW-4476 Water 11/22/2019 Sr-89 0.62 0.23 :1: 0.45 5

SPW-4476 Water 11/22/2019 Sr-90 0.57

-0.16 +/- 0.24 1

SPW-4601 Water 12/5/2019 H-3 155 28 :1:74 200 SPW-4635 Water 12/9/2019 Tc-99 12

-6 +/-7 20 SPW-4662 Water 12/17/2019 Ra-228 0.77 0.55 +/- 0.42 2

SPW-4687 Water 12/13/2019 H-3 150 143 :I: 78 200 SPW-4733 Water 11/15/2019 Ra-226 0.03 0.13 :I: 0.03 2

SPW-4742 Water 12/5/2019 Ra-226 0.04 0.10 :1:0.10 2

SPW-4744 Water 12/19/2019 H-3 151 119 :I: 81 200 SPW-4888 Water 12/19/2019 Ra-226 0.03 0.15 :1:0.02 2

SPW-4898 Water 1/3/2020 H-3 159 19 +/-78 200

• Liquid sample results are reported in pCI/Llter, air fillers ( pCi/ma), charcoal (pCl/charcoal canister), and solid samples (pCl/g).

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

0 l-131{G): lodine-131 as analyzed by gamma spectroscopy.

d Activity reported Is a net activity result.

A-12

TABLE A-6. In-House "Duplicate" Samples Concentration*

Averaged Lab Codeb Date Analysis First Result Second Result Result Accee!ance AP-5499,5500 1/2/2019 Fa-55 941 :I: 220 1027 :!: 226 984 :!: 158 Pass AP-5499,5500 1/2/2019 Sr-89 20.2 +/- 7.3 14.9 :1:5.7 17.5 :1:4.7 Pass AP-5499,5500 112/2019 Nl-63 12.1 +/- 8.5 15.6 :1:8.5 13.8 :i:6.0 Pass CF-20,21 112/2019 Gr. Bela 10.0 :I: 0.2 10.7 +/-0.2 10.3 :1:0.2 Pass CF-20,21 112/2019 Sr-90 0.005 :I: 0.002 0.005 :1: 0.002 0.005 :!: 0.001 Pass CF-20,21 112/2019 Be--7 0.27 :1:0.09 0.29 :1:0.08 0.28 :!:0.06 Pass CF-20,21 1/2/2019 K-40 6.69 :1:0.34 6.83 +/-0.34 6.76 :!:0.24 Pass SG-211,212 1/21/2019 Ra-226 7.94 :1: 1.15 8.50 :t: 1.11 9.79 :!:0.19 Pass SG-211,212 1/21/2019 Ac-228 4.46 :1:0.37 4.63 +/-0.43 4.55 +/-0.28 Pass WW-324,325 2/4/2019 Gr. Atpha 0,68 +/-0.44 0.49 :I: 0.46 0.59 :1:0.32 Pass WW-324,325 2/4/2019 Gr. Beta 1.80 :I: 0.55 2.95 +/-0.63 2.37 :I: 0.42 Pass W-345,346 2/4/2019 H-3 245 +/-84 277 :I: 85 261-:1: 60 Pass WW-797,798 3/5/2019 H-3 165 :1:80 222 :1:83 193 :1:58 Pass WW-648,649 3/8/2019 H-3 587 :I: 101 630 :1: 102 608 :!:72 Pass SW-713,714 3/14/2019 H-3 326 +/-90 254 :1:86 290 :!:62 Pass AP-1241,1242 4/2/2019 Be-7 0.097 :1: 0.018 0.108 :!: 0.020 0.103 :1:0,013 Pass AP-1285, 1286 4/3/2019 Ba-7 0.080 :!: 0.014 0.078 :I: 0.012 0.079 +/-0.009 Pass AP-1306, 1307 4/3/2019 Ba-7 0.085 :1: 0.009 0.096 :I: 0.011 0.090 +/- 0.007 Pass AP-1327, 1328 4/3/2019 Be-7 0.078 +/-0.010 0.079 :I: 0.011 0.078 :t 0.007 Pass AP-1327, 1328 4/3/2019 K-40 0.012 :1: 0.007 0.021 :I: 0.010 0.017 :t 0.006 Pass AP-2119,2120 4/3/2019 Be-7 0.276 +/- 0.098 0.265 :!: 0.116 0.270 :I: 0.076 Pass AP-2225,2226 4/3/2019 Be-7 0.231 :t 0.128 0.208 :1: 0.123 0.220 :1: 0.089 Pass CF-820,821 413/2019 K-40 6.39 :1:0.30 6.63 :!: 0.37 6.51 :!:0.24 Pass WW-648,649 4/5/2019 H-3 587 :I: 101 630 :1: 102 608 :!:72 Pass WW-1043,1044 4/5/2019 H-3 666 +/- 121 662 :I: 121 664 ::1:86 Pass SW-1087,1088 4/8/2019 H-3 9,997 +/- 300 10,330 :1:305 10,164 :1:214 Pass WW-1198,1199 4/9/2019 H-3 562 :t: 99 640 :I: 102 601 :1:71 Pass LW-1503,1504 4/25/2019 Gr. Beta 1.09 :1: 0.55 1.46 :I: 0.57 1.27 :I: 0.39 Pass WW-1789, 1790 5/7/2019 H-3 366 :1:90 400 :1:92

• 383 :1:64 Pass SG-2269,2270 5/7/2019 Pb-214 39.1 :!:0.5 40.3 +/-0.5 39.7 :t 0.4 Pass SG-2269,2270 5/7/2019 Ac-228 53.2 :!: 1.0 57.1 :I: 1.0 55.2 :1:0.7 Pass DW-10049,10050 6ll/2019 Ra-226 1.31 :I: 0.13 1.66 +/-0.15 1.49 :1:0.10 Pass DW-10049,10050 5/7/2019 Ra-228 1.24 :1: 0.52 1.33 :1:0.53 1.29 :1:0.37 Pass WW-1690A,B 5/8/2019 H-3 325 :1:89 303 +/-93 314 :1:64 Pass S-1812, 1813 5/16/2019 K-40 22.0 +/-0.9 23.3 +/- 1.0 22.6 :1:0.7 Pass S-1812,1813 5/16/2019 Cs-137 0.05 :J:0.03 0.07 :!: 0.04 0.06 :1:0.02 Pass DW-10053,10054 5/22/2019 Gr. Alpha 0.93 :1:0.63 1.14:1:0,72 1.04 ::1:0.48 Pass DW-10053, 10054 5/22/2019 Gr. Beta 1.43 :1:0.62 1.13 :!:0.59 1.28 +/-0.43 Pass W-2053,2054 5/29/2019 H~3 1572 +/- 135 1470 +/- 131 1521 :I: 94 Pass A~13

TABLE A-6. In-House "Duplicate" Samples Concentration a Averaged LabCodeb Dale Analysis First Result Second Result Result Acceptance G-1989,1990 6/3/2019 Be--7 0.80 +/-0.18 0.72 :!:0.15 0.76 +/- 0.12 Pass G-1989, 1990 6/3/2019 K--40 6.15 +/- 0.51 5.98 +/- 0.46 6.07 +/-0.34 Pass G-1989,1990 6/3/2019 Gr. Beta 7.24 +/- 0.19 7.00 +/- 0.19 7.12 +/- 0.13 Pass WW-2204,2205 6/6/2019 H-3 3861 :I: 194 3722 :I: 191 3792 +/-136 Pass S-2031,2032 6/10/2019 Pb-214 5.16 +/- 0.19 4.75 :1:0.22 4.96 +/-0.15 Pass S-2031,2032 6/10/2019 Ac-228 3.81 :f: 0.31 3.63 +/-0.33

• 3.72 :1:0.23 Pass S-2010,2011 6/10/2019 Pb-214 1.48 +/- 0.10 1.05 :I: 0.11 1.27 :I: 0.07 Pass F-2140,2141 6/12/2019 K-40 1.01 :1: 0.28 1.39 +/- 0.32 1.20 :I: 0.21 Pass S-2162,2163 6/12/2019 Pb-214 0.65 +/-0.06 0.54 :1:0.05 0.60 +/-0.04 Pass S-2162,2163 6/12/2019 Ac-228 0.46 +/-0.10 0.44 :i:0.08 0.45 :1:0.07 Pass S-2162,2163 6/1212019 K-40 4.22 :1:0.49 3.81 :I: 0.41 4.02 +/-0.32 Pass S-2162,2163 6/1212019 Tl-208 0.09 :1:0.02 0.10 :I: 0.02 0.09 :1:0.01 Pass S-2162,2163 6/1212019 Pb-212 0.34 :1:0.03 0.26 +/-0.03 0.30 :1:0.02 Pass SWT-2355,2356 6/25/2019 Gr. Beta 1.12 :1:0.57 1.24 :1:0.56 1.18 +/-0.40 Pass AP-2689,2690 6/28/2019 Be-7 0.089 :I: 0.020 0.075 :!: 0.018 0.082 :1:0.013 Pass AP-2710,2711 7/1/2019 Be-7 0.091 :I: 0.010 0.097 :I: 0.010 0.094 +/- 0.007 Pass AP-2731,2732 7/2/2019 Be-7 0.073 :I: 0.013 0.072 :I: 0.011 0.072 :1: 0.009 Pass DW-10062, 10063 7/5/2019 Ra-226 4.10 :I: 0.30 4.03 +/-0.30 4.07 :!:0.21 Pass DW-10062,10063 7/5/2019 Ra-228 1.95 :1:0.60 2.31 :1:0.62 2.13 :I: 0.43 Pass AP-70818,70819 7/8/2019 Gr. Beta 0.021 :I: 0.004 0.023 :I: 0.004 0.022 :I: 0.003 Pass XW-2459,2460 7/10/2019 H-3 304 +/-92 234 :1:89 269 +/-64 Pass VE-2516,2517 7/10/2019 Be-7 0.63 +/-0.16 0.52 :1:0.19 0.58 +/-0.12 Pass VE-2516,2517 7/1012019 K-40 6.50 :i:0.47 6.81 :1: 0,54 6,66 +/-0.36 Pass AP-71518A,B 7/1512019 Gr. Beta 0.022 :I: 0.004 0.025 :1: 0.004 0.023 :1: 0.003 Pass VE-2668,2669 7/16/2019 K-40 3.84 :1:0.27 3.74 :1:0.26 3.79 +/-0.19 Pass DW-10076,10077 7/16/2019 Gr.Alpha 3.01 :1:0.92 4.13 :1:0.91 3.57 :1:0.65 Pass DW-10073,10074 7/1612019 Ra-226 1.57 :1:0.18 1.51 :1: 0.21 1.54 +/-0.14 Pass DW-10073, 1007 4 7/16/2019 Ra-228 1.29 :I: 0.56 1.48 +/-0.57 1.385 +/-0.40 Pass AP-72218A,B 7/22/2019 Gr. Beta 0.013 :1: 0.004 0.016 :I: 0.004 O.o15 :1:0.003 Pass G-2752,2753 7/23/2019 K-40 4.53 +/-0.42 4.47 :1:0.46 4.50 +/-0.31 Pass G-2752,2753 7/23/2019 Be-7 1.98 :I: 0.29 1.96 :l:0.29 1.97 +/-0.20 Pass AP-2800,2801 7/25/2019 Be-7 0.208 :I: 0.090 0.321 :1: 0.147 0.264 :1: 0.086 Pass AP-72918A,B 7/29/2019 Gr. Beta 0.026 +/- 0.005 0.025 :I: 0.005 0.025 :I: 0.003 Pass VE-2840,2841 7/31/2019 K-40 3.94 :1:0.38 3,99 :I: 0.47 3.96 +/-0.30 Pass AP-2903,2904 8/1/2019 Be-7 0.198 :I: 0.102 0.228 :t 0.102 0.213 :!: 0.072 Pass P-2882,2983 8/1/2019 H-3 265 +/-85 327 :1:88 296 :1:61 Pass SG-2926,2927 8/5/2019 Pb-214 9.07 +/-0.39 8.82 +/-0.39 8.95 :t0.28 Pass SG-2926,2927 8/5/2019 Ac~228 9.00 :1:0.76 8.58 :1:0.72 8.79 :1:0.52 Pass AV-2993,2994 8/9/2019 Gr. Beta 1.22 :1:0.19 1.28 +/- 0.21 1.25 :1:0.14 Pass AV-2993,2994 8/9/2019 K-40 3.12 :1: 0.36 3.14 :1: 0.35 3.13 :1:0.25 Pass A-14

TABLEA-6. In-House "Duplicate" Samples Concentration 8

Averaged Lab Code!>

Date Analysis First Result Second Result Result Acceptance DW-10088, 10089 8/9/2019 Ra-228 0.60 +/- 0.50 1.20 :1: 0.50 0.90 ::t:0.35 F'ass DW-10088, 10089 8/9/2019 Ra-226 1.40 +/- 0.20 0.94 :1:0.20 1.17 :1:0.14 F'ass VE-3016,3017 8/12/2019 Be-7 0.39 +/- 0.12 0.47 0,28 0.43 0.15 F'ass VE-3016,3017 8/12/2019 K-40 6.13 ::t: 0.41 6.24 0.64 6.18 0.38 F'ass G-3600,3601 8/12/2019 Be-7 4.42 ::t:0.33 4.35 0.27 4.39 0.21 Pass WW-3100,3101 8/14/2019 H-3 480 +/-96 401 :1:92 441 :1:66 Pass Ml-3211,3212 8/27/2019 K-40 1862 +/- 131 1923 :I: 136 1893 :1:94 Pass Ml-3211,3212 8/27/2019 Sr-90 0.90 +/-0.33 0.66 :I: 0.29 0.73 :!:0.22 Pass LW-3512,3513 8/30/2019 Gr. Beta 0.79 +/-0.50 1.39 :I: 0.58 1.09 :1:0.38 Pass DW-10100, 10101 9/5/2019 Ra-226 0.50 +/-0.11 0.57 0.12 0.54 :1:0.08 Pass DW-10100,10101 9/5/2019 Ra-228 3.38 :1:0.82 2.54 1.03 2.96 :1: 0.66 Pass DW-10111,10112 9/2312019 Gr.Alpha 1.72 :!: 0.73 1.41 0,68 1.57 :I: 0.50 Pass DW-10115,10116 9/25/2019 Ra-228 3.65 +/-0.80 2.76 0.68 3.21 :1:0.52 Pass DW-10115,10116 9/25/2019 Ra-226 2.99 +/-0.23 2.74 0.25 2.87 :I: 0.17 Pass WW-3793,3794 10/8/2019 Gr. Beta 3.75+/-1.18 4.34 1.20 4.05 :1:0.84 Pass BS-3879,3880 10/9/2019 Pb-214 0.60 +/-0.03 0.65 :1:0.05 0.63 +/-0.03 Pass BS-3879,3880 10/9/2019 Ra-226 1.27 +/-0.14 1.15+/-0.14 1.21 +/-0.10 Pass BS-3879,3880 10/9/2019 K-40 11.05 +/-0.29 10,69 +/-0.30 10.87 +/-0.21 Pass BS-3879,3880 10/9/2019 Pb-212 0.58 +/- 0.02 0.55 :t:0.02 0.56 +/-0.01 Pass BS-3879,3880 10/9/2019 11-208 0.21 :1: 0.02 0.21 +/- 0.01 0.21 +/-0.01 Pass BS-3879,3880 10/9/2019 Bi-212 0.75 :I: 0.17 0.62 +/- 0.17 0.68 +/-0.12 Pass BS-3879,3880 10/9/2019 Bi-214 0.57 +/- 0.02 0.52 :!:0.06 0.54 +/-0.03 Pass BS-4161,4162 10129/2019 K-40 15.3 :1:0.6 15.3 +/-0.7 15.3 +/-0.5 Pass BS-4161,4162 10/29/2019 Ra-226 2.16 +/-0.35 2.27 :I: 0.78 2.22 :1:0.43 Pass DW-10126,10127 10/2212019 Ra-228 0.85 +/-0.58 1.19 :1: 0.62 1.02 :!:0.42 Pass DW-10129,10130 10/2212019 Gr. Alpha 1.44 :1:0.96 3.06 :1:0.96 2.25 :1:0.68 Pass SG-4071 10/2212019 Ac-228 2.10 :t:0.16 2.16 :1:0.20 2.13+/-0.13 Pass SPSG-4071,4072 10/2212019 Pb-214 1.61 :l: 0.10 1.29 :I: 0.08 1.45 :I: 0.06 Pass SS-3900,3901 10/15/2019 81-212 0.29 +/- 0.14 0.19+/-0,12 0.24 :1:0.09 Pass WW-4291,4292 11/5/2019 H-3 481 :1: 97 528 :i:97 505 :1:68 Pass DW-10139,10140 11/6/2019 Ra-228 2.61 :I: 0.62 2.26 +/-0.63 2.44 +/-0,44 Pass DW-10139,10140 11/6/2019 Ra-226 1.49 :1:0.17 1.32 +/- 0.19 1.41 :1: 0.13 Pass WW-4270.4271 11/6/2019 H-3 112 +/-78 165 +/- 81 139 :1:56 Pass S-4312.4313 1117/2019 K-40 20.2 :1:0.8 23.0 +/-0.9 21.6 :1:0.6 Pass AP-4379,4380 11/1212019 Be-7 0.133 +/- 0.075 0.134 +/- 0.073 0.134 :1:0.052 Pass S-4422,4223 11/13/2019 Pb-214 1.22 :1: 0.09 1.28 :1:0.10 1.25 :1:0.07 Pass S-4422,4423 11/13/2019 Ac-228 1.14 :1: 0.15 1.21 :1:0.17 1.18 :1:0.11 Pass WW-4556,4557 11/13/2019 H-3 438 :1: 96 482 +/- 98 460 +/-89 Pass S0-5024,5025 11/14/2019 K-40 6.60 +/-0.54 6.26 :1: 0.58 6.43 :!:0.40 Pass Ml-4443,4444 11/18/2019 K-40 1304 :t 114 1340 :I: 109 1322 :1:79 Pass A-15

TABLE A-6. In-House "Duplicate" Samples Concentration a Averaged Lab Codeb Date Ana!xsls First Result Second Result Result Acceelance SW-4492,4493 11/19/2019 H-3 188 :1:87 264 +/-97 226 +/-65 Pass WW-4577,4578 11121/2019 H-3 212 +/- 83 232 :1: 84 222 +/-59 Pass AP-4514,4615 11/21/2019 Be-7 0.130 +/- 0.055 0.193 +/-0.112 0.162 :1: 0.062 Pass SWT-4598,4599 11/26/2019 Gr. Beta 1.43 :1:0.57 1.14 :l:0.54 1.28 :1:0.39 Pass AP-120218A,B 12/2/2019 Gr. Beta 0.009:1:0.004 0.013 :t 0.004 0.011 +/-0.003 Pass S-4644,4645 12/4/2019 Pb-214 1.01 +/- 0.09 0.91 :I: 0.09 0.96 +/- 0.06 Pass S-4644,4645 12/4/2019 Ac-228 0.85 :I: 0.15 0.96 :I: 0.16 0.91 :t 0.11 Pass AP-121618A,B 12/16/2019 Gr. Beta 0.028 +/-0.005 0.030 +/- 0.005 0.029 :I: 0.003 Pass S-4735,4736 12/16/2019 Pb-214 9.33 :l:0.38 9;45 +/-0.27 9.39 :1:0.23 Pass S-4735,4736 12/16(2019 Ac-228 13.4 +/- 0.7 14.9 :1:0.7 14.1 +/-0.5 Pass AP-122318A,B 12/23/2019 Gr. Beta 0,034 +/- 0.005 0.035 +/-0.005 0.035 :1: 0.003 Pass AP-123018A,B 12/30/2019 Gr. Beta 0.037 :I: 0.005 0.037 +/- 0.005 0.037 :t 0.004 Pass Note; Duplicate analyses are performed on every twentieth sample received In-house. Results are not llsted for those analyses with activities that measure below the LLD.

a Results are reported In units of pCi/L, except for air fillers (pCI/Fllter or pCl/m3), food products, vegetation, soil and sediment {pClfg).

b CH (Charcoal Canister), OW (Drinking Water), E (Egg), F (Fish), G (Grass), LW (Lake Water), P (Precipitation),

PM (Powdered Mlll<), S, (Solld), SG (Sludge), SO {Soll), SS (Shoreline Sediment), SW (Surface Water),

SWT {Surface Water Treated), SWU (Surface Water Untreated), VE (Vegetation}, W Water (Water), WW (Well Water).

TABLEA-7. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Concentration 8

Reference Known Control Lab Code b Date Anal;r:sis Laboratory result Activity Limits*

Acceptance MAAP-609 2/1/2019 Gross Alpha 0.16 +/-0.03 0.528 0.158 - 0.898 Pass MAAP-609 2/1/2019 Gross Beta 1.09 +/- 0.07 0.948 0.474 -1.422 Pass MAW-550 2/1/2019 Gross Alpha 0.73 +/- 0.06 0.84 0.25 -1.43 Pass MAW-550 2/1/2019 Gross Beta 2,26 :1: 0.06 2.33 1.17-3.50 Pass MAS0-605 211/2019 Am-241 38.89 +/-5.92 49.9 34.9 +/-64.9 Pass MAS0-605 211/2019 Cs-134 0.45 +/-2.52 0.0 NA 0

Pass MAS0-605 211/2019 Cs-137 1273.1 +/- 13.0 1164 815 -1513 Pass MAS0-605 211/2019 Co-57 0.46 +/- 1.1 0.0 NA 0

Pass MAS0-605 211/2019 Co-60 857.96 +/- 8.52 855.0 599-1112 Pass MAS0-605 2/1/2019 Mn-54 1,138.0 +/-13.5 1027 719 -1335 Pass MAS0-605 2/1/2019 Zn-65 730.92 +/- 16.48 668 468 -868 Pass MAS0-605 2/1/2019 K-40 676 +/-47 585 410 - 761 Pass MAS0-605 2/1/2019 Sr-90 0.0007 +/- 0.0007 0.000 NA 0

Pass MAS0-605 2/1/2019 Pu-238 78.15 +/-6.11 71.0 49.7 -92.3 Pass MAS0-605 2/1/2019 Pu-239/240 65.00 +/- 5.4 59.8 41.9-77.7 Pass MAS0-605 2/1/2019 U-234 65 +/- 13 56 39 -73 Pass MAS0-605 2/1/2019 U-238 237 +/-23 205 144 -267 Pass MAW-613 2/1/2019 Am-241 0.46 +/- 0.03 0.582 0.407 - 0.757 Pass MAW-613 2/1/2019 Cs-134 5.49 :I: 0.18 5.99 4.19 - 7.79 Pass MAW-613 2/1/2019 Cs-137 0.089 +/- 0.080 0

NA 0

Pass MAW-613 2/1/2019 Co-57 10.87 +/- 0.24 10.00 7.0 -13.0 Pass MAW-613 2/1/2019 Co-60 6.78 +/-0.19 6.7 4.7 -8.7 Pass MAW-613 2/1/2019 Mn-54 8.98 +/-0.17 8.4 5.9 -10.9 Pass MAW-613 2/1/2019 Zn-65 0.096 +/-0.141 0

NA 0 Pass MAW-613 2/1/2019 Fe-55 0.004 +/-4.00 0

NA 0 Pass MAW-613 2/1/2019 Nl-63 5.54 +/- 1.52 5.8 4.1 -7.5 Pass MAW-613 2/1/2019 Sr-90 6.02 +/-0.53 6.35 4.45 - 8.26 Pass MAW-613 2/1/2019 Pu-238 0.315 +/- 0.088 0.451 0.316 - 0.586 Fai1° MAW-613 2/1/2019 Pu-239/240 0.07 +/-0.07 0.005 NAd Pass MAW-613 2/1/2019 U-234 0.96 +/- 0.07 0.800 0.56 :I: 1.04 Pass MAW-613 2/1/2019 U-238 0.94 +/- 0.07 0.810 0.57 :I: 1.05 Pass MAAP-611 2/1/2019 Cs-134 0.185 +/- 0.025 0.216 0.151 - 0.281 Pass MAAP-611 211/2019 Cs-137 0.288 +/- 0.045 0.290 0.203 -o.3n Pass MAAP-611 2/1/2019 Co-57 0.369 +/- 0.033 0.411 0.288 - 0.534 Pass MAAP-611 2/1/2019 Co-60 0.333 +/- 0.045 0.340 0.238 - 0.442 Pass MAAP-611 2/1/2019 Mn-54 0.546 +/- 0.058 0.547 0.383 - 0.711 Pass MAAP-611 2/1/2019 Zn-65 0.025 +/- 0.0348 0

NA 0

Pass MAAP-611 2/1/2019 Sr-90 1.34 +/-0.13 0.662 0.463 - 0.861 Failr MAAP-611 2/1/2019 U-234 4.14 +/-0.97 0.106 0.074 - 0.138 Failr MAAP-611 2/1/2019 U-238 3.89 +/-0.94 0.110 0.077 - 0.143 Fall1 MAW-601 2/1/2019 1-129 0.56 +/-0.08 0.616 0.431 - 0.801 Pass A-17

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

Concentration" Reference Known Control Lab Code b Date Analysis Laboratory result Activity Limits c Acceptance MAVE-607 2(1/2019 Cs-134 2.33 +/- 0.10 2.44 1.71 -3.17 Pass MAVE-607 2/1/2019 Cs-137 2.62 +/- 0.13 2.30 1.61 -2.99 Pass MAVE-607 2/1/2019 Co-57 2.39 :1: 0.11 2.07 1.45 -2.69 Pass MAVE-607 2/1/2019 Co-60 0.046 +/- 0.04 0

NAC Pass MAVE-607 2/1/2019 Mn-54 0.031 +/- 0.04 0

NAC Pass MAVE-607 2/1/2019 Sr-90 0.013 +/- 0.022 0

NA 0

Pass MAAP-3299 8/1/2019 Gross Alpha 0.13 +/- 0.03 0.528 0.158 - 0.898 Fail8 MAAP-3299 8/1/2019 Gross Beta 1.06 +/- 0.07 0.937 0.469 - 1.406 Pass MAW-3252 8/1/2019 Gross Alpha 0.93 +/- 0.06 1.06 0.32 -1.80 Pass MAW-3252 8/1/2019 Gross Beta 3.03 +/-0.07 3.32 1.66 -4.98 Pass MASO-3297 8/19/2019 Cs-134 881.98 +/- 9.03 1020 714 -1326 Pass MAS0-3297 8/19/2019 Cs-137 871.50 +/- 10.83 789 552 -1026 Pass MASO-3297 8/19/2019 Co-57

-1.72 +/-3.01 0

NAC Pass MASO-3297 8/19/2019 Co-60 783.69 +/- 8.21 760 532 -988 Pass MASO-3297 8/19/2019 Mn-54 834.48 +/- 11.29 745 522 -969 Pass MAS0-3297 8(19/2019 Zn-65

-3.01 +/- 5.27 0

NA 0 Pass MASO-3297 8/19/2019 K-40 662.91 +/- 42.65 555 389 -722 Pass MAW-3240 8(1/2019 Cs-134

-0.08 :I: 0.06 0

NAC Pass MAW-3240 8/1/2019 Cs-137 18.48 :I: 0.90 18.4 12.9 -23.9 Pass MAW-3240 8/1/2019 Co-57 14.68 +/-0.52 15.6 10.9 -20.3 Pass MAW-3240 8/1/2019 Co-60 8.67 +/- 0.39 8.8 6.2 -11.4 Pass MAW-3240 8/1/2019 Mn-54 20.72 +/- 0.93 20.6 14.4 - 26.8 Pass MAW-3240 8/1/2019 Zn-65 20.52 +/- 1.05 20.3 14.200 - 26.400 Pass MAW-3240 8/1/2019 K-40 5.11 +/-0.68 0

NA 0 Fail MAW-3240 8/1/2019 H-3 179.52 +/- 3.32 175 123 -228 Pass MAW-3240 8/1/2019 U-234 1.11 +/- 0.04 1.07 0.75 -1.39 Pass MAW-3240 8/1/2019 U-238 1.08 +/- 0.04 1.05 0.74 -1.37 Pass MAVE-3295 8/1/2019 Cs-134 0.02 +/- 0.02 0

NAC Pass MAVE-3295 8/1/2019 Cs-137 3.38 :1: 0.32 3.28 2.30 -4.26 Pass MAVE-3295 8/1/2019 Co-57 4.99 +/- 0.51 4.57 3.20 -5.94 Pass MAVE-3295 8/1/2019 Co-60 5.29 +/-0.39 5.30 3.71 -6.89 Pass MAVE-3295 8/1/2019 Mn-54 4.73 +/- 0.45 4.49 3.14 -5.84 Pass MAVE-3295 8/1/2019 Zn-65 3.10 +/- 0.31 2.85 2.00 -3.71 Pass

• Results are reported In units of Bq/kg (soil), Bq/L (water) or Bqltotal sample (filters, vegetation).

b Laboratory codes as follows: MAW (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 llmlts as defined by the MAPEP. A known value of "zero" indicates an analysis was included in the testing series as a "false positive". MAPEP does not provide control limits.

d Provided in the series for "sensitivity evaluation". MAPEP does not provide control limits.

0 Past results have been acceptable so will watch to see If a trend develops.

1 An erroneous volume conversion caused some Incorrect values to be submitted. If the conversion had been performed properly the results In Bqfsample would have been (Sr-90: 0.671 :I: 0.066) and (U-234: 0.153 :1: 0.036) and (U-238: 0.144 :I: 0.035).

This result had been Included In the Uranium Investigation. See footnote "C" on Table A-1.

0 The lab wlll adopt a MAPEP specific gross alpha/beta filter calibration as discussed In the MAPEP test instructions.

Utili2:lng a MAPEP specific calibration, the result ln Bq/sample ( 0.39 :I: 0.09 Bqftotal) which passes the MAPEP acceptance criteria.

A-18 L_

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• TABLE A-8. lnterlaboratory Comparison Crosscheck Program, Environmental Resource Associates (ERA) a

• MRAD-30 Stu~

Concentration a LabCodeb Date Analysis Laboratory ERA Control Result Value 0 Limits d Acceptance ERAP-846 3/18/2019 Am-241 19.1 18.7 13.3 -24.9 Pass ERAP-846 3/18/2019 Cs-134 612 721 468 -884 Pass ERAP-846 3/18/2019 Cs-137 679 634 521 - 832 Pass ERAP-846 3/18/2019 Co-60 93.7 93.8 79.7 -119 Pass ERAP-846 3/18/2019 Fe-55 612 718 262 -1150 Pass ERAP-846 3/1812019 Mn-54

<0.5

<50.0 0.00 -50.0 Pass ERAP-846 3/18/2019 Zn-65 1500 1380 1130 -2110 Pass ERAP-846 3/1812019 Pu-238 34.0 33.8 25.5 -41.5 Pass SRAP-846 3/18/2019 Pu-239 64.9 67.0 50.1 -80.8 Pass ERAP-846 3/18/2019 Sr-90 199 181 114-246 Pass ERAP-846 3/18/2019 U-234 8

29.0 18.2 13.5 -21.3 Fail ERAP-846 3/18/2019 U-238" 28.6 18.1 13.7 -21.6 Fail ERAP-848 3/18/2019 Gross Alpha 48.4 50.3 26.3 -82.9 Pass ERAP-848 3/18/2019 Gross Beta 95.5 78.6 47.7 -119 Pass 8 Results obtained by Environmental, Inc., Midwest Laboratory (EIML) 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 (OAP)

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

8 Failure traced to an over-estimated U-232 tracer value. Tracer has been re-standardized. (See footnote "c" on Table A-1).

A-19

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• fax (947) 56"4517 Appendix B Data Reporting Conventions

APPENDIX B.

DATA REPORTING CONVENTIONS Data Reporting Conventions 1.0. All activities, except gross alpha and gross beta, are decay corrected to collection time or the end of the collection period.

2.0. Single Measurements Each single measurement is reported as follows:

x +/- s where:

x = value of the measurement; s = 2cr counting uncertainty (corresponding to the 95% confidence level).

In cases where the activity is less than the lower limit of detection L, it is reported as: < L, where L = the lower limit of detection based on 4.66cr uncertainty for a background sample.

3.0. Duplicate analyses If duplicate analyses are reported, the convention is as follows. :

3.1 Individual results: For two analysis results; x1 +/- s1 and "2 +/- s2 Reported result:

x +/- s; where x = ( 1 /2)(x1 + x2) and s = ( 1 /2).J s~ + s i 3.2.

3.3.

Individual results:

< L1, < L2 Individual results:

x +/- s, < L Reported result: < L, where L = lower of L1 and L2 Reported result:

x +/- s if x.?: L; < L otherwise.

4.0. Computation of Averages and Standard Deviations 4.1 Averages and standard deviations listed in the tables are computed from all of the Individual measurements over the period averaged; for examp~. an annual standard deviation would not be the average of quarterly standard deviations. The average x and standard deviation "s" of a set of n numbers x1, x2... xn are defined as follows:

--~

s- "\\J~

4.2 Values below the highest lower limit of detection are not included in the average.

4.3 lf all values In the averaging group are less than the highest LLD, the highest LLD is reported.

4.4 If all but one of the values are less than the highest LLD, the single value x and associated two sigma error is reported.

4.5 ln rounding off, the following rules are followed:

4.5.1. If the number following those to be retained Is less than 5, the number ls dropped, and the retained numbers are kept unchanged. As an example, 11.443 is rounded off to 11.44.

4.5.2. If the number following those to be retained is equal to or greater than 5, the number is dropped and the last retained number Is raised by 1. As an example, 11.445 is rounded off to 11.45.

B-1

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• ATJ Environm~ntal, Inc.

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• fax (~41) 584-4817 AppendixC Maximum permissible concentrations of radioactivity in air and water above natural background in unrestricted areas

APPENDIXC Table C-1.

Maximum permissible concentrations of radioactivity in air and water above natural background in unrestricted areas 8

Air (pCi/m3)

Water (pCi/L)

Gross a!pha 1 X 10"3 Strontium-89 8,000 Gross beta 1

Strontium~90 500 lodine-131b 2.8 X 10" 1

Cesium-137 1,000 Barium-140 8,000 lodine-131 1,000 Potassium-40 c 4,000 Gross alpha 2

Gross beta 10 Tritium 1 X 106 a Taken from Table 2 of Appendix B to Code of Federal Regulations Title 10, Part 20, and appropriate footnotes.

Concentrations may be averaged over a period not greater than one year.

b Value adjusted by a factor of700 to reduce the dose resulting from the alr-grass-cow-mllk-chlld pathway.

c A natural radionuclide.

C-1

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