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Annual Radiological Environmental Operating Report
	ML21118B059
Person / Time
Site:	Callaway
Issue date:	04/28/2021
From:	; Ameren Missouri, Union Electric Co
To:	; Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
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ML21118B057	List: ML21118B058; ULNRC-06653, Annual Radiological Environmental Operating Report;
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71Ameren Callaway MISSOURI I

Energy Center AMEREN MISSOURI CALLAWAY ENERGY CENTER FULTON, MISSOURI Docket Numbers 50-483 and 72-1 045 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT to THE UNITED STATES NUCLEAR REGULATORY COMMISSION Part I January 1 to December 31 2020 Prepared by ENVIRONMENTAL, Inc.

Midwest Laboratory and Ameren Missouri Callaway Energy Center Submitted by UNION ELECTRIC CO.

dba Ameren Missouri Project No. 8036

ii PREFACE This Annual Radiological Environmental Operating Report (AREOR) describes the Ameren Missouri Callaway Energy Center Radiological Environmental Monitoring Program (REMP), and the program results for the calendar year 2020. It is submitted in accordance with section 5.6.2 of the Callaway Energy Center Technical Specifications.

Staff members of the Environmental, Inc., Midwest Laboratory were responsible for the acquisition of data presented in this report. Environmental samples were collected by Ameren Missouri personnel or contractors to Ameren Missouri and shipped to Environmental, Inc. - Midwest Laboratory and Stanford Dosimetry, LLC, for analysis.

The report was prepared by Environmental, Inc., Midwest Laboratory and the Ameren Missouri Callaway Energy Center.

iii TABLE OF CONTENTS No.

Page PREFACE..................................................................................................................... ii List of Tables................................................................................................................. v List of Figures............................................................................................................... vi

1.0 INTRODUCTION

........................................................................................................... 1 2.0

SUMMARY

.................................................................................................................... 2 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM............................... 3 3.1 Program Design and Data Interpretation......................................................... 3 3.2 Program Description........................................................................................ 4 3.3 Program Execution.......................................................................................... 5 3.4 Laboratory Procedures.................................................................................... 7 3.5 Program Modifications..................................................................................... 7 3.6 Detection and Reporting Limits........................................................................ 8 3.7 Land Use Census............................................................................................. 8 3.8 Errata from previous AREORs........................................................................ 9 4.0 RESULTS AND DISCUSSION................................................................................... 10 4.1 Atmospheric Nuclear Detonations and Nuclear Accidents............................ 10 4.2 Program Findings........................................................................................... 10 5.0 TABLES..................................................................................................................... 13

6.0 REFERENCES

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

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

Data Reporting Conventions.................................................................................... B-1 C

Non-Radiological Monitoring Program..................................................................... C-1 D

Sampling Location Maps.......................................................................................... D-1

iv TABLE OF CONTENTS (continued)

PART II Page Data Tabulations and Analyses..................................................................................... i

v LIST OF TABLES No.

Page 5.1 Sampling Locations, Ameren Missouri, Callaway Energy Center.............................. 14 5.2 Collection Frequencies and Required Analyses......................................................... 18 5.3 Minimum Required Detection Capabilities for REMP Sample Analysis..................... 19 5.4 Results of the Land Use Census................................................................................ 20 5.5 Missed Collections and Analyses............................................................................... 21 5.6 Radiological Environmental Monitoring Program Summary....................................... 22 5.7 Direct Radiation Dose (mrem/90 days) for the Period 2000-2019.............................. 24 In addition, the following tables are in the Appendices:

Appendix A Attachment A: Acceptance criteria for spiked samples.............................................A-2 A-1 Interlaboratory Comparison Crosscheck Program, Environmental Resource Associates RAD study (substitute program for EPA)................................................ A-3 A-2 Interlaboratory Comparison Crosscheck Program, New York Department of Health (ELAP).......................................................................................................... A-4 A-3 Interlaboratory Comparison Program Results, Thermoluminescent Dosimeters (TLDs)..................................................................................................................... A-5 A-4 In-house Spiked Samples......................................................................................... A-7 A-5 In-house "Blank" Samples...................................................................................... A-10 A-6 In-house "Duplicate" Samples................................................................................ A-12 A-7 Department of Energy MAPEP comparison results................................................ A-16 A-8 Interlaboratory Comparison Crosscheck Program, Environmental Resource Associates (substitute program for EML)................................................................ A-19

vi LIST OF FIGURES Appendix D No.

Page D-1 Radiological Environmental Sampling Locations 1, 2, 3 mile radius from site location............................................................................................................... D-2 D-2 Radiological Environmental Sampling Locations 3, 4, 5, 6 mile radius from site location............................................................................................................... D-3 D-3 Radiological Environmental Sampling Locations 5, 10, 15 mile radius from site location...................................................................................................................... D-4 D-4 Non-Potable Groundwater Monitoring Wells, 600 ft. radius...................................... D-5 D-5 Non-Potable Groundwater Monitoring Wells Collection............................................ D-6

1

1.0 INTRODUCTION

This report presents an analysis of the results of the Radiological Environmental Monitoring Program (REMP) conducted during 2020 for the Union Electric Company (dba Ameren Missouri) Callaway Energy Center.

The objectives of the REMP are to monitor potential critical pathways of radioactive effluent to man and determine the radiological impact on the environment caused by operation of the Callaway Energy Center. The Radiological Environmental Monitoring Program was initiated in April 1982.

The Callaway Energy Center consists of one 3565 MWt pressurized water reactor, which achieved initial criticality on October 2, 1984. The plant is located on a plateau approximately ten miles southeast of the City of Fulton in Callaway County, Missouri and approximately eighty miles west of the St. Louis metropolitan area. The Missouri River flows by the site in an easterly direction approximately five miles south of the site at its closest point.

Tabulation of the individual analyses for the year 2020 is included in Part II of this report.

2 2.0

SUMMARY

The Radiological Environmental Monitoring Program, as required by the U.S. Nuclear Regulatory Commission (NRC) Technical Specifications for the Callaway Energy Center is described herein. Results for the year 2020 are summarized and discussed.

For the year, the Callaway Energy Center was operated in compliance with Offsite Dose Calculation Manual (ODCM) and Radiological Effluent Controls (REC) requirements. Results from the REMP indicate the Callaway Energy Center has had no significant radiological impact on the health and safety of the public or on the environment.

3 3.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 3.1 Program Design and Data Interpretation The purpose of the Radiological Environmental Monitoring Program at the Callaway Energy Center is to assess the impact of the plant on its environment. For this purpose, samples are collected from waterborne, airborne, ingestion and terrestrial pathways and analyzed for radioactive content. Direct radiation levels are monitored by thermoluminescent dosimeters (TLDs).

Sources of environmental radiation can include the following:

(1)

Natural background radiation arising from cosmic rays and primordial radionuclides; (2)

Fallout from atmospheric nuclear detonations; (3)

Releases from nuclear power plants, planned or accidental; and (4)

Industrial and medical radioactive waste.

Effects due to operation of the Callaway Energy Center must be distinguished from those due to other sources in interpreting the data.

The indicator-control concept is a major interpretive aid; where feasible the design of the Callaway Energy Center program has both indicator and control stations. Most types of samples are collected at indicator locations (nearby, downwind, or downstream) and at control locations (distant, upwind, or upstream). A station effect would be indicated if the radiation level at an indicator location was significantly larger than that at the control location. The difference would have to be greater than could be accounted for by typical fluctuations in radiation levels arising from other sources.

The monitoring program includes analyses for iodine-131, a fission product, and tritium, which is produced by cosmic rays, atmospheric nuclear detonations, and also by nuclear power plants.

Most samples are analyzed for gamma-emitting isotopes, with results for the following groups quantified: zirconium-95, cesium-137, and cerium-144. These three gamma-emitting isotopes are selected as radiological impact indicators because of the different characteristic proportions in which they appear in the fission product mix produced by a nuclear reactor and that produced by a nuclear detonation. Each of the three isotopes is produced in roughly equivalent amounts by a reactor: each constitutes about 10% of the total activity of fission products ten days after reactor shutdown. On the other hand, ten days after a nuclear explosion, the contributions of zirconium-95, cerium-144, and cesium-137 to the activity of the resulting debris are in the approximate ratio 4:1:0.03 (Eisenbud,1963).

The other group quantified consists of niobium-95, ruthenium-103 and -106, cesium-134, barium-lanthanum-140, and cerium-141. These isotopes are released in small quantities by nuclear power plants, but to date their major source of injection into the general environment has been atmospheric nuclear testing. Nuclides of the next group, manganese-54, cobalt-58 and-60, and zinc-65, are activation products and arise from activation of corrosion products. They are typical components of nuclear power plant effluents, but are not produced in significant quantities by nuclear detonation.

Nuclides of the final group, beryllium-7, which is of cosmogenic origin, and potassium-40, a naturally-occurring isotope, were chosen as analytical monitors and should not be considered radiological impact indicators.

Other means of distinguishing sources of environmental radiation can be employed in interpreting the data. Current radiation levels can be compared with previous levels, including pre-operational data. Results of the monitoring program can be related to those obtained in other parts of the world. Finally, results can be related to events known to cause elevated levels of radiation in the environment, e.g., a nuclear accident.

4 3.2 Program Description The sampling and analysis schedules for the environmental radiological monitoring program at the Callaway Energy Center are summarized in Tables 5.1 and 5.2 and briefly reviewed below.

Table 5.1 identifies sampling locations and specifies as to type (indicator or control) and its distance, and direction relative to the reactor site. The types of samples collected at each location, required analyses and the frequency of collections are presented in Table 5.2.

To monitor the air environment, airborne particulate and airborne iodine samples are collected by continuous pumping, at six locations. The airborne particulates are collected on glass fiber filters and the airborne iodine through activated charcoal cartridges. Both filters and cartridges are exchanged weekly. Airborne particulates are analyzed for gamma-emitting isotopes. Charcoal cartridges are analyzed for iodine-131.

The ingestion pathway is monitored by sampling of milk (if available), fish and green leafy vegetation.

Milk samples are collected semimonthly when animals are on pasture and monthly the rest of the year. There were no milk indicator or control stations identified by the Land Use Census for the subject year. Milk samples are analyzed for iodine-131 and gamma-emitting isotopes when available.

Monthly during the growing season, edible green leafy vegetation is collected from both indicator and control locations. Vegetation samples typically consist of mustard greens, turnip greens, cabbage, lettuce, collards, radish greens, swiss chard, broccoli and poke. Other edible broad leaf vegetation is collected if primary varieties are not available. The samples are analyzed for iodine-131 and other gamma-emitting isotopes.

Feed crops (soybeans, sorghum, and corn) are collected from locations FC-1 through FC-4.

FC-1, FC-2 and FC-3 are located on Ameren property traversed by the discharge pipeline. The samples are collected at harvest and analyzed for tritium and gamma emitting isotopes. FC-4 is a control location, beyond the influence of plant operations. Feed crops are grown for animal feed and not for human consumption. The soybean field for sample FC-1 is planted by the Missouri State Department of Conservation (MODOC) to provide feed to wildlife living in the Reform Wildlife Conservation Area. MODOC did not plant the field this year and there was no crop to sample.

The waterborne pathway is monitored by sampling surface water, groundwater and drinking water, and bottom and shoreline sediments. Water samples are analyzed for tritium and gamma-emitting isotopes, and sediments are analyzed for gamma-emitting isotopes.

The waterborne pathway is also monitored by upstream and downstream semiannual collections of fish. The five most abundant recreational or commercial fish species are collected. The edible portions of the samples are analyzed for gamma-emitting isotopes.

Monthly composite samples of surface water from the Missouri River are collected from one indicator location (S02) and from one control location (S01). The surface water samples are composites of daily collections by automatic river samplers.

Onsite surface water from ponds is analyzed for tritium and gamma-emitting isotopes. The collection frequencies are semiannually.

To monitor possible sources of ground water contamination due to plant operations, non-potable ground water samples were collected monthly or quarterly from well locations both onsite and along the discharge pipeline. The samples were analyzed for tritium and gamma-emitting isotopes.

5 3.2 Program Description (continued)

Potable well water samples are collected quarterly from the plant drinking water supply and neighboring property owners. The samples were analyzed for tritium and gamma-emitting isotopes.

River bottom sediment is collected semiannually at the plant's intake (A) and discharge (C). The samples are taken from water at least 2 meters deep to prevent influence of bank erosion.

Shoreline sediments are collected semiannually in the same area as bottom sediment. These samples are collected within two feet of the edge of the water. The samples are analyzed for gamma-emitting isotopes.

The direct ambient gamma radiation pathway is also considered. This exposure is monitored by thermoluminescent dosimeters (TLDs) at forty-four locations in and around the Callaway site.

The TLDs are placed in 16 sectors around the plant as specified in the ODCM-RECS. Five of the TLD stations have neutron monitoring capability and three locations are designated as controls.

TLDs are exchanged and analyzed quarterly.

Soil is collected annually from six indicator locations (F2, PR3, F6, PR7, W2, and W5) and two control locations (M9, W1) to monitor the terrestrial environment. The samples are analyzed for gamma-emitting isotopes.

3.3 Program Execution The program was executed as described in the preceding section with the following exceptions.

(1) Surface Water:

The upstream river sampler at location S01, 550 feet upstream of the discharge, was out of service for approximately 165 days (45%) during 2020. The majority of that time, 159 days, was a continuation of an out of service condition that began 7/18/2019 due to a clogged sample line resulting from a severe river flooding event. Attempts to desilt the well casing with a water lance and a firehose were unsuccessful. Diving operations to unclog the sample line were deemed unsafe due to the river being projected to be above flood stage for some period of time. Eventually a different means of unclogging the sample line and returning the sampler to service was devised and implemented (CR#201904768). There were additional timeline complications due to the unforeseen staffing circumstances as a result of COVID-19 precautions. The downstream river sampler at location S02, located at the end of the mixing zone in Portland, MO was out of service for approximately 44 days (12%) during 2020. The majority of that time, 29 days, was due to equipment damage from river flooding requiring the replacement of the pump skid (CR#202000732). Daily grab samples were collected during those out of service time periods per Callaways procedures.

(2) Airborne Particulates and Iodine:

The air sampler station CA-A-008 failed to collect a full weeks sample for the period ending 1/30/20. (CR#202000546).

A power loss 5/14/20 at air stations A-8 and A-9 resulted in a loss of collection time for both samplers of 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months and 20 minutes. The missing sample time would not have impacted the sample negatively. These samples are not considered missing (CR#202002472).

The air sample station CA-A-001 was found to be missing 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months of runtime for the period ending 9/10/20. The lost collection time would not have impacted the sample negatively. This sample is not considered missed (CR#202004554).

6 3.3 Program Execution (continued)

The air sampler at location CA-A-008 was found not running for the period ending 11/12/20 (CR#202006510).

(3) Milk:

Milk sampling was not conducted in 2020 due to a lack of sample providers. Vegetation sampling is sufficient to comply with the requirements of the ODCM.

(4) Leafy Green Vegetables:

No vegetable samples were available 4/14/20 at locations CA-FPL-V9, CA-FPL-V12, CA-FPL-V16 and CA-FPL-V19 (CR#202001918).

No vegetable samples were available 5/12/20 at locations CA-FPL-V9 and CA-FPL-V19 (CR#202002407).

No vegetable samples were available for location CA-VPL-V19 for the 8/18/20 collection event (CR#202004063).

(5) Inedible Crops:

Inedible crops were not available at indicator location CA-FC-1 during 2020 as the field was not planted (CR#202005443).

(6) Drinking Water:

A drinking water sample was unobtainable for the 10/28/20 collection event, at location CA-DWA-008, due to a change in property ownership where the new owner has not enrolled in the sample provider program (CR#202005930 / CR#202007038).

(7) Ground Water:

A well sample was not collected at the location designated inside Old Blowdown Line for the 7/17/20 collection event due to a dry well condition.

A well sample was not obtainable at location CA-U1MW-047 for the 10/07/20 collection event (CR202006018).

A well sample was not collected at the locations designated inside Old Blowdown Line for the 10/20/20 collection event due to a dry well condition (CR#202006014).

Since the fourth quarter of 2015 through the fourth quarter of 2020 an ODCM required well sample was not taken at location U1MW-017. The omission was discovered during a well sampling program reevaluation (CR#202100825).

(8) Soil/Sediment:

It was discovered during a continuing training cycle that the requirement for sampling each wetlands pond, as required in the 'Shoreline sediments from sludge ponds' section of FSAR-SP Table 16.11-7, was not being met. Prior to 2001, only one pond was designated as a wetlands pond and that pond's shoreline sediment has been sampled routinely. After 2001, the next sludge pond in the series (pond #2) was changed to a wetlands pond. This change was not communicated to Radiation Protection, therefore wetlands pond #2 has not been sampled. Sampling of wetlands pond #2 has been added to the program for 2021.

7 (8) Soil/Sediment: (continued)

The wetlands and sludge ponds are not accessed by the general public.

(CR#202102041).

(9) Direct Radiation:

The third quarter TLD at location CA-IDM-49 was found missing on the day of collection 10/03/20 (CR#202005099).

3.4 Laboratory Procedures Gamma-spectroscopic analyses were performed with HPGe detectors. Levels of iodine-131 in vegetation and concentrations of airborne iodine-131 in charcoal samples were also determined by gamma spectroscopy.

Tritium was measured by liquid scintillation.

Analytical procedures used by Environmental, Inc. are on file at the laboratory 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 Interlaboratory Comparison (crosscheck) Programs. Results obtained through Quality control samples and crosscheck program results are presented in Appendix A.

Environmental TLDs are processed by Environmental Dosimetry Company, affiliated with Stanford Dosimetry, LLC.

3.5 Program Modifications The following changes were made to the REMP sampling locations per Licensing Document Change Notice (LDCN) 20-0008 to eliminate Surface Water samples, selected Groundwater samples and non-food crop samples from FSAR-SP Table 16.11-7. (CR# 202100660-006):

Item 3.b. Waterborne - Surface (onsite ponds) was eliminated in its entirety.

Item 3.c. Waterborne - Groundwater (non-drinking water) was revised to change the number of shallow wells or groundwater sumps to be sampled in locations suitable to monitor for subsurface leakage from power block structures and components from seven to six. Clarification was also provided by striking the clause from the alluvial plain from the description of the five shallow wells.

In addition the following categories were eliminated:

Samples from three shallow wells in locations suitable to monitor for migrations of contaminated groundwater from the powerblock to areas outside the owner controlled area.

Samples from one shallow well located immediately downgradient from the sludge ponds.

8 3.5 Program Modifications (Continued)

Samples from one deep well near the property boundary located to monitor for migration of contaminated groundwater from the discharge pipeline to the nearest potable water well.

Item 6. Farm Crops and its associated footnote (13) were eliminated in their entirety.

The above referenced CR action, (CR#202100660-006), includes a copy of the signed justification for these changes to FSAR-SP Table 16.11-7.

Other changes to the REMP sampling for 2020 include the following:

Location CA-DWA-006 changed ownership from Lindeman to Kuenzel.

Location CA-FPL-V19, R. & A. Dillon Farm, was added to replace location CA-FPL-V11, Hickman Farm.

Location CA-DWA-025, M. Kriete, was added as a drinking water location in 2021.

Location CA-DWA-010 changed ownership from S. Dillon to T. Dillon (CR#202100085).

3.6 Detection and Reporting Limits Table 5.3 states the minimum required detection limits for radiological environmental sample analysis. For each sample type, the table lists the detection level for each isotope. The lower limit of detection (LLD) used in this report is described in NRC Regulatory Guide 4.1 Rev. 1, "Program for Monitoring Radioactivity in the Environs of Nuclear Power Plants" and the NRC Radiological Assessment Branch Technical Position, Rev. 1, November 1979, "An Acceptable Radiological Environmental Monitoring Program".

3.7 Land Use Census The Land Use Census is performed annually during the growing season. In 2020, the field inspection of the sectors was conducted September 2, 2020 within a five mile canvassing radius of the Callaway Energy Center. The area around the plant was divided into 16 meteorological sectors. The locations of the nearest resident, nearest milk animal, and nearest garden of greater than 500 square feet producing broadleaf vegetation were identified.

The results of the census are presented in Table 5.4. The table includes radial direction and distance from the Callaway Energy Center for each location. The bearings listed in Table 5.4 were measured from the Callaway Plant to the sample location.

There are no changes to the closest residents or closest broadleaf gardens from 2019. No milking animals were located during the survey.

All residents included in the summary were verified by the Callaway County Assessors GIS aerial photography.

The Missouri Department of Natural Resources has not identified any new water wells along the Mud Creek or Logan Creek corridors.

9 3.7 Land Use Census (continued)

The US Army Corps of Engineers was contacted, and they confirmed that no new drinking water intakes have been located along the Missouri River within ten (10) river miles downstream from the Callaway Plant. In addition, no irrigation uses of the Missouri River were identified between the discharge point and Portland, MO during the survey.

3.8 Errata from previous Annual Radiological Environmental Operating Reports Missing and/or incorrectly labeled sample locations were identified on the maps showing the Radiological Environmental Monitoring Program (REMP) and Groundwater Protection Initiative (GPI) sample locations for some previous reports. These maps are revised each year to reflect sample location changes. Condition documented in (CR#202101046).

The following errors were identified:

1. Non-potable well: U1MW-016 missing from maps. Affects 2016-2019 reports.

2. Non-potable well: U1MW-019 missing from maps. Affects 2016-2019 reports.

3. Non-potable well: F19 is shown on maps; however, there is no F19. Affects 2016-2019 reports.

4. Direct radiation: 60N missing from maps: Affects 2015-2019.

5. Soil: M9 missing from maps. Affects 2018-2019.

6. Drinking water well: Well 23 missing from 2017 map. Affects 2017 report only.

7. Drinking water well: Well 24 mistakenly shown as well 11. Affects 2017-2019 reports.

8. Drinking water well: PW1 missing from maps. Affects 2017-2019 reports.

The following information was missing from the 2019 report Part I, section 3.3 Program Execution:

Missing information documented in (CR#202101763):

1. Surface Water:

Due to extensive flooding and unsafe river levels in 2019, the Portland and Intake river samplers have been out-of-service for the duration provided below. Flooding resulted in excess silting of sampling lines and the inability to access the Portland sampler vault to perform repairs. In addition, the river levels have been too high to allow a diver access to the sampling line in the intake structure safely. During those out of service times, daily grab samples are collected per Callaways procedures.

Sampler S01, the upstream sampler located in the plant water intake structure about 550 feet upstream of the discharge, was out of service for approximately 175 days (48%) during 2019.

Sampler S02, the downstream sampler located at the end of the mixing zone in Portland, MO, was out of service for approximately 284 days (78%) during 2019.

The following location information was incorrect in the 2017 and 2019 reports, Part I, table 5.1, issue documented in (CR#202102051):

1. Location V-16, which is listed as both a Leafy Green Vegetable sampling location CA-FPL-V16 and as a Well water - potable sampling location CA-DWA-V16, had its direction from the midpoint of the two reactors misstated by 180 degrees from the actual direction for both sampling types in the table listing.

10 4.0 RESULTS AND DISCUSSION All collections and analyses were made as scheduled, except for those listed in Table 5.5.

Results are summarized in Table 5.6 as recommended by the Nuclear Regulatory Commission.

For each type of analysis and sample medium, the table lists the mean and range of all indicator and control locations, as well as that location with the highest mean and range.

The tabulated results of all measurements are not included in this section, although references to these results will be made in the discussion. A complete tabulation of results for 2020 is contained in Part II of the Annual Report on the Radiological Environmental Monitoring Program for the Callaway Energy Center.

4.1 Atmospheric Nuclear Detonations and Nuclear Accidents The Fukushima Daiichi nuclear accident occurred March 11, 2011. There were no reported accidents involving significant release to the environment at nuclear reactor facilities in 2020.

The last reported atmospheric test was conducted on October 16, 1980 by the Peoples Republic of China. There were no reported atmospheric nuclear tests in 2020.

4.2 Program Findings Airborne Particulates and Iodine No gamma-emitting isotopes were identified other than naturally occurring Be-7.

No I-131 activity was detected in any of the charcoal canister samples.

Air sampling for 2020 indicates no radiological effects of plant operation.

Direct Radiation (TLDs)

Forty-four gamma sensitive TLDs were placed in 16 sectors around the Callaway site.

Measurements from forty-one indicator locations averaged 15.0 mrem/quarter and the three control locations averaged 14.3 mrem/quarter. Readings ranged from 10.2 to 17.2 mrem /quarter, with the highest quarterly average from the control location CA-IDM-27, averaging 16.7 mrem/quarter. The TLD readings were consistent with the results for the years 2000 through 2019 as detailed in table 5.7.

Five neutron sensitive TLDs were placed in locations at the Site Boundary closest to the Independent Spent Fuel Storage Facility Installation (ISFSI) and at a control location approximately 14 miles from the site. There was no significant measureable neutron dose and there was no effect from the ISFSI in 2020.

Milk Sampling was discontinued in 2018 since there are not enough sampling locations to fulfill the milk sampling requirement. No milking animals were located during the 2020 Land Use Census.

Leafy green (broadleaf) vegetation sampling was performed in lieu of milk sampling.

Broadleaf Vegetation No I-131 activity was detected in broadleaf vegetation samples. No gamma-emitting isotopes were detected in broadleaf vegetation samples except for naturally occurring beryllium-7 and potassium-40. Vegetation data for 2020 show no radiological effects of plant operation.

11 4.2 Program Findings (continued)

Non-Food Crops Seven soybean samples were collected in 2020. No tritium or gamma-emitting isotopes were detected in any of the samples except for naturally occurring beryllium-7 and potassium-40. Non-food crop data for 2020 show no radiological effects of plant operation.

Fish Edible portions of fish were analyzed by gamma spectroscopy. No gamma-emitting isotopes, except for naturally occurring potassium-40, were detected in fish.

Soil Cesium-137 activity was detected at all six of the indicator sample locations at an average concentration of 228 pCi/kg dry. One of the two control samples was positive for Cesium-137 with an activity of 126 pCi/kg dry. The cesium-137 activity is consistent with levels observed from 1999 through 2019; these levels are attributable to the deposition of fallout from previous decades.

Surface Water Low level tritium was detected in six of the twelve samples collected at the downstream location S02 at an average concentration of 282 pCi/L. No tritium was detected in the remaining six samples from S02 nor at the upstream location S01. No gamma-emitting isotopes were detected in any of the samples taken in 2020.

Surface Water, Ponds Eighteen pond samples were analyzed for 2020. No tritium activity or gamma activity was detected.

Drinking Water Wells (potable water)

Sixty samples from sixteen different locations were analyzed for tritium and gamma-emitting isotopes in 2020. No tritium or gamma-emitting isotopes were detected.

Wells and Ponds (non-potable water)

Groundwater samples from deep wells F-05 and F-15 were analyzed for tritium and gamma-emitting isotopes. There were no tritium or gamma emitting isotopes detected.

Wells MW-31, MW-34, MW-36, MW-39, MW-47, MW-58, and MW-59 were installed during the 2014 limited site investigation (LSI) (the 2014 LSI is described in detail in the Callaway Energy Center 2014 Annual Radioactive Effluents Release Report). These wells continue to monitor the natural attenuation of tritium which decreased significantly during 2015 and continued to decrease since 2016. Tritium activity was detected in 16 of 28 samples from these wells. The highest concentration was measured in MW-31 which peaked at 420 pCi/L in July. The average concentration among positive results for these wells was 261 pCi/L. this decline has been steady since December of 2016. The contamination is being remediated by monitored natural attenuation. There are no active leaks.

Wells GWS, 936, 937B, 937D, 939R, 940, 941 and IFSFI Sump are located in the Plant Protected Area, adjacent to the power block. Tritium activity in these wells is believed to be the result of washout from gaseous effluents. The low level tritium activity observed in well MW-014 is likely due to residual low level contamination from moisture carryover during normal operation of air

12 4.2 Program Findings (continued)

Wells and Ponds (non-potable water) (continued) release valves (ARVs) in manholes 5 and 6B on the now-retired discharge pipeline. The pipeline was replaced in 2008 and there has been no new contamination of this area since then. The existing contamination is being remediated by monitored natural attenuation. There are no active leaks and the results are consistent with 2015 through 2019.

It is believed that the higher level tritium activity observed in the analysis results of the sample and backup sample taken at the groundwater sump (GWS) location for 11/12/2020 was due to precipitation washout that accumulated in the category 1 structural backfill. The groundwater sump was tagged out from 9/18/2020 through 10/04/2020 for some pipe rerouting. This would have allowed any tritium washout from precipitation in the groundwater time to stagnate and then subsequently to be pumped into the sump when it was returned to service, likely causing the elevated readings. (Condition documented in CR#202007110).

Sediments Four samples of each of both shoreline and bottom sediments were collected in May and October 2020 at both an indicator and a control location and analyzed for gamma-emitting isotopes.

Cesium-137 was detected in the May bottom sediment sample collected at the indicator location at a concentration of 43 pCi/kg dry. Cesium-137 was also detected in both the May and October shoreline sediment samples collected at the control location, at an average concentration of 26 pCi/kg dry weight. These results are consistent with results from previous years. There were no other gamma-emitting isotopes detected excepting naturally occurring potassium-40 in any of the sediment samples.

13 5.0 TABLES

14 Table 5.1. Sampling Locations. (TLDs)

Location Distance /

Sample Code Direction 1 Description Types 2 1a 10.8 mi. 310 o NW City of Fulton on Hwy Z, 0.65 mi. E of Bus. 54, W of Campus Apartments IDM 3

1.2 mi. 308 o NW 0.1 mi. West of Hwy CC on Gravel Rd., 0.8 mi. South Hwy O IDM 5

1.3 mi. 79 o ENE Meteorological Tower IDM 6

2.0 mi. 274 o W Cty Rd. 428, 1.2 mi. West of Hwy CC IDM 7

1.4 mi. 184 o S Cty Rd. 459, 2.6 mi. North of Hwy 94 IDM 9

3.8 mi. 183 o S NW Side of the Cty Rd. 459 and Hwy 94 Junction IDM 10 3.9 mi. 159 o SSE Hwy 94, 1.8 mi. East of Cty Rd. 459 IDM 11a 4.7 mi. 139 o SE City of Portland IDM 14 4.9 mi. 122 o ESE SE Side of Intersection Hwy D and Hwy 94 IDM 17 3.8 mi. 88 o E Cty Rd. 4053, 0.3 mi. E of Hwy 94 IDM 18a 3.7 mi. 67 o ENE East side of Hwy D, 0.5 mi. South of Hwy O IDM 20 4.7 mi. 46 o NE City of Readsville IDM 21 3.8 mi. 23 o NNE Cty Rd. 155, 1.9 mi. North of Hwy O IDM 22a 0.9 mi. 10 o NNE Cty Rd 448, 0.9 mi south of HWY O, co-located with air station A8 IDM 23 6.6 mi. 15 o NNE City of Yucatan IDM 26 3 11.7 mi. 82 o E Town of Americus IDM 27 3 9.3 mi. 114 o ESE Town of Bluffton IDM 30a 4.4 mi. 206 o SSW City of Steedman, N side of Belgian Dr., 150 ft. East of Hwy CC IDM 31a 7.8 mi. 224 o SW City of Mokane, Jct. Hwy C and Cty Rd. 400, 0.9 mi. N. of Hwy 94 IDM 32 5.4 mi. 250 o WSW Hwy VV, 0.6 mi. west of Cty Rd. 447 IDM 32a 5.0 mi. 243 o WSW Cty Rd. 447 IDM 33 7.4 mi. 272 o W City of Hams Prairie, SE of Hwy C and Hwy AD Junction IDM 34 9.5 mi. 292 o WNW NE Side of Hwy C and Cty Rd. 408 Junction IDM 35 5.8 mi. 340 o NNW City of Toledo IDM 36 4.9 mi. 7 o N Cty Rd. 155, 0.8 mi. South of Cty Rd. 132 IDM 37 0.5 mi. 195 o SSW Cty Rd. 459, 0.9 mi. South of Hwy CC IDM 38 4.6 mi. 334 o NNW Cty Rd. 133, 1.5 mi. South of Hwy UU IDM 39 5.4 mi. 312 o NW Cty Rd. 111 IDM 39a 5.0 mi. 308 o NW Cty Rd. 111 IDM 40 4.2 mi. 292 o WNW NE Side of Cty Rd. 112 and Hwy O Junction IDM 41 5.2 mi. 277 o W Hwy AD, 2.5 mi. East of Hwy C IDM 42 4.4 mi. 231 o SW Cty Rd. 447, 2.6 mi. North of Cty Rd. 463 IDM 43 0.5 mi. 223 o SW Cty Rd. 459, 0.7 mi. South of Hwy CC IDM 44 1.7 mi. 254 o WSW Hwy CC, 1.0 mi. South of Cty Rd. 459 IDM 45 1.0 mi. 285 o WNW Cty Rd. 428, 0.1 mi. West of Hwy CC IDM 46 1.5 mi. 328 o NNW NE Side of Hwy CC and Cty Rd. 466 Intersection IDM 47 1.0 mi. 10 o N Cty Rd. 448, 0.9 mi. South of Hwy O IDM 48 0.4 mi. NE Cty Rd. 448, 1.5 mi. South of Hwy O, Plant Security Sign Post IDM 49 1.6 mi. 94 o E Cty Rd. 448, Reform Wildlife Mgmt. Parking Area, Dept. of Consrv. Sign.

IDM 50 0.9 mi. 168 o SSE Cty Rd. 459, 3.3 mi. North of Hwy 94 IDM 51a 0.3 mi. 150o SE Owner Control Fence, SE of the Water Treatment Plant IDM 52 0.4 mi. 111 o ESE Light Pole Near the East Plant Security Fence IDM 60 3 13.5 mi. 224 o SW Just past Tebbetts City sign IDM

15 Table 5.1. Sampling Locations. (TLDs, continued)

Location Code Distance /

Direction 1 Description Sample Types 2 60N 3 13.5 mi 224 o SW Co-located with location 60 IDM 61 1.9 mi 334 o NNW Community of Reform, Corner of CC and O IDM 61N 1.9 mi 334 o NNW Co-located with location 61 IDM 62N 1.2 mi. 308 o NW Co-located with location 3 IDM 63N 0.9 mi. 10 o NNE Co-located with air station A8 and location 22a IDM 64N 1.0 mi. 285 o WNW Co-located with location 45 IDM Table 5.1. Sampling Locations (Airborne Radioiodine and Particulate samples, Surface Ponds, Potable Water)

A1 1.3 mi. 79 o ENE Meteorological Tower APT, AIO A7 9.5 mi. 312 o NW C. Bartley Farm, Fulton, MO APT, AIO A8 0.9 mi. 10 o NNE County Road 448, 0.9 miles South of Hwy O APT, AIO A9 1.9 mi. 334 o NNW Community of Reform APT, AIO A10 0.89 mi 276 o W EOF Parking lot APT, AIO A11 0.71 mi 166 o SSE Sludge lagoons lift pumps area APT, AIO 3

2.9 mi. 168 o SSE Potable water, County Road 448 Ward Residence DWA 4

2.6 mi. 158 o SSE Potable water, County Road 448 Miller Residence DWA 5

2.5 mi. 153 o SSE Potable water, County Road 448 Brucker Brothers Farm DWA 6 4 2.2 mi. 141 o SE Potable water, County Road 448 Kuenzel Residence DWA 7

2.1 mi. 108 o ESE Potable water, County Road 448 S. Kriete Residence DWA 8

3.4 mi. 193 o SSW Potable water, County Road 457 Brandt Residence DWA 9

2.9 mi. 204 o SSW Potable water, County Road 457 Clardy Residence DWA 10 2.7 mi. 208 o SSW Potable water, County Road 457 T. Dillon Residence DWA 12 3.6 mi. 165 o SSE Potable water, County Road 464 J. Dillon Residence DWA 21 2.4 mi. 120 o ESE Potable water, County Road 469 Baumgarth Residence DWA 22 4.8 mi. 140 o SE Potable water, State Road 94 Plummer Residence DWA 23 5.6 mi. 142 o SE Potable water, County Road 466 Curdt Residence DWA 24 2.9 mi. 203 o SSW Potable water, County Road 457 Farley Residence DWA 25 1.89 mi. 79 o E Potable water, County Road 448 M. Kriete Residence DWA V16 1.64 mi. 255 o WSW Potable water, Hwy CC Wallendorf Farm, Steedman, MO DWA PW1 Callaway Cafeteria, 0.13 mi. 234 o SW Potable water, Unit 1 Construction well #3 open from 400-1400 DWA Pond 01 0.6 mi. 264 o W Fishing Pond SWA Pond 02 0.7 mi. 232 o SW Fishing Pond SWA Outfall 010 0.6 mi. 42 o NE Stormwater Run-Off Pond SWA Outfall 011 1.0 mi. 60 o ENE Stormwater Run-Off Pond SWA Outfall 012 0.5 mi. 178 o S Stormwater Run-Off Pond SWA Outfall 013 0.5 mi. 189 o S Stormwater Run-Off Pond SWA Outfall 014 0.6 mi. 343 o NNW Stormwater Run-Off Pond SWA Outfall 015 0.7 mi. 4 o N Stormwater Run-Off Pond SWA Sludge Lagoon

~0.8 mi. 153 o SSE 5 In-service Sludge Lagoon SWA S01 3 4.8 mi. 150 o SSE 555 feet Upstream of Discharge North Bank SWA S02 4.9 mi. 138 o SE 1.1 River Miles Downstream of Discharge North Bank SWA

16 Table 5.1. Sampling Locations, Non-potable Groundwater Wells Location Code Distance /

Direction 1 Description Sample Types 2 U1MW-936 Plant Peninsula Area, 0.03 mi. 84 o E Diesel Fuel Remediation Well, NW of Fuel Bldg.

WWA U1MW-937B Plant Peninsula Area, 0.04 mi. 209 o SSW Monitoring Well, West of the Turbine Bldg.

WWA U1MW-937D Plant Peninsula Area, 0.1 mi. 92 o E Monitoring Well, North of Discharge Monitor Tanks WWA U1MW-939R Plant Peninsula Area, 0.05 mi. 109 o ESE Monitoring Well, East of the Fuel Bldg.

WWA U1MW-940 Plant Peninsula Area, 0.05 mi. 78 o ENE Monitoring Well, West of the Radwaste Bldg.

WWA U1MW-941 Plant Peninsula Area, 0.07 mi. 81 o E Monitoring Well, West of the Radwaste Bldg.

WWA U1MW-GWS Plant Peninsula Area, 0.02 mi. 135 o SE Ground Water Sump, West of Reactor Bldg. and Fuel Bldg.

WWA U1MW-ISFSI ISFSI sump, 0.08 mi. 21 o NNE Near ISFSI pad WWA U1MW-001 0.3 mi. 334o NNW Outside owner controlled area (OCA), Groundwater Monitoring Well WWA U1MW-002 0.4 mi. 206 o SSW Outside OCA, Groundwater Monitoring Well WWA U1MW-004 3.7 mi. 165 o SSE South of Dillon residence, Groundwater Monitoring Well WWA U1MW-005 3.8 mi. 160 o SSE South of Brownlee / Hudson residence, Groundwater Monitoring Well WWA U1MW-006 3.0 mi. 171 o S South of Ward Residence, Groundwater Monitoring Well WWA U1MW-010 3.1 mi. 173 o S Old Pipeline Bed, Groundwater Monitoring Well WWA U1MW-012 3.0 mi. 172 o S South of Ward Residence, Groundwater Monitoring Well WWA U1MW-013 0.8 mi. 159 o SSE Pipeline Corridor, south of sludge ponds WWA U1MW-014 3.7 mi. 171 o S Pipeline Corridor, near manhole 6B WWA U1MW-015 3.9 mi. 162 o SSE Pipeline Corridor, North of HWY 94.

WWA U1MW-016 4.5 mi. 151 o SSE Pipeline Corridor, near heavy haul road at intake structure WWA U1MW-018 3.75 mi. 172 o S Pipeline Corridor, near manhole 6B WWA U1MW-019 3.71 mi.172 o S Pipeline Corridor, near manhole 5 WWA U1MW-020 3.88 mi.164 o SSE Pipeline Corridor, near manhole 3B WWA U1MW-031 0.18 mi. 78 o ENE

~1m from manhole 86-2 & 1m from HDPE discharge pipeline WWA U1MW-034 0.21 mi. 98 o E

~130m from manhole 86-2, HDPE discharge line bedding WWA U1MW-036 0.26 mi. 122 o ESE

~300m from MH 86-2, HDPE discharge line bedding at cross connection pipe WWA U1MW-039 0.61 mi. 168 o SSE

~1100m from manhole 86-2, HDPE discharge line bedding outside OCA WWA U1MW-047 4.56 mi. 151 o SSE Upstream side of HDPE gate valve vault at intake structure inside HDPE pipeline bedding WWA U1MW-058 0.31 mi. 132 o SE

~400m from manhole 86-2, Techite discharge line bedding WWA U1MW-059 1.04 mi. 166 o SSE

~1700m from MH86-2, Techite discharge line bedding outside OCA WWA Inside Old BDL 1.81 mi. 177 o S Sampled through hole in Techite blowdown line WWA U2 MW 2S 1.8 mi. 5 o N Located on the periphery of the plateau WWA U2 MW 5S 1.1 mi. 261 o W Located on the periphery of the plateau WWA U2 MW 8 0.4 mi. 12 o NNE Located radially outward from central part of the plateau WWA U2 MW 10 0.4 mi. 163 o SSE Located radially outward from central part of the plateau WWA U2 MW 16 2.9 mi. 203 o SSW Located along Mud Creek, Farley Property, screened for CJC aquifer WWA F05 0.9 mi. 169 o S CJC aquifer monitoring well WWA F15 0.4 mi. 29 o NNE Outside OCA fence in center portion of plateau, screened for CJC aquifer WWA

17 Table 5.1. Sampling Locations, Soil, Food Products, Milk, Fish, Bottom Sediments and Inedible Crops.

Location Code Distance /

Direction 1 Description Sample Types 2 F2 1.0 mi. 235 o SW Callaway Plant Forest Ecology Plot F2.

SOL F6 1.6 mi. 51 o NE Callaway Plant Forest Ecology Plot F6.

SOL PR3 0.95 mi. 108 o ESE Callaway Plant Forest Ecology Plot PR3.

SOL PR7 0.46 mi. 320 o NNW Callaway Plant Forest Ecology Plot PR7.

SOL W1 3 0.52 mi. 150 o SE Callaway Plant Wetlands, High Ground.

SOL W2 0.52 mi. 149 o SSE Callaway Plant Wetlands, Inlet Area.

SOL W5

~0.8 mi. 153 o SSE5 In-service Sludge Lagoon.

SOL M9 3 13 mi. 228 o SW Ferguson Farm, Tebbetts, MO.

SOL V9 1.9 mi. 294 o WNW Meehan Farm, Steedman, MO FPL V12 3 18.7 mi. 255 o WSW Kissock Farm, Holts Summit, MO FPL V16 1.64 mi. 255 o WSW Wallendorf Farm, Steedman, MO FPL V19 3.28 mi. 162 o SSE R. and A. Dillon Farm, Portland, MO FPL A 3,6

~4.8 mi. 150 o SSE Between 0.6 and 10.0 river miles upstream of the plant intake.

AQF A 3,

~4.8 mi. 150 o SSE Upstream of the plant intake.

AQS C 6

~4.9 mi. 138 o SE Downstream of the plant discharge, between the confluence of the Missouri River and Logan Creek and the Portland boat ramp AQF C

~4.9 mi. 138 o SE Vicinity of Portland - north bank AQS FC1

~3.5 mi. 174 o S Between discharge pipeline MH-8 and the Katy Trail FC FC2

~3.8 mi. 166 o SSE Between discharge pipeline MH-5 and MH-3B.

FC FC3

~4.1 mi. 157 o SSE Between Hwy 94 and the barge loading dock access road.

FC FC4 3

~7.8 mi. 229 o SW South Callaway High School, Unlikely to be influenced by plant operations.

FC 1 Distances are measured from the midpoint of the two reactors as described in Final Safety Analysis Report (FSAR) Sec.

2.1.1.1.

2 AIO = Air Iodine, APT = Air Particulate, AQF = Fish, AQS = Sediment, FPL = Leafy Green Vegetables, FC = Food Crops, IDM = TLD, MLK = Milk, SOL = Soil, SWA = Surface Water, DWA = Drinking Water, WWA = Ground Water.

3 Control Location.

4 Property ownership changed from in the fourth quarter of 2020 from Lindeman to Kuenzel.

5 The coordinates of the in-service sludge lagoon are determined at the time of sampling in accordance with HTP-ZZ-07101-DTI-REMP-SMPL-SCHED.

6 The expanded collection areas provide sufficient habitat to collect the required number of species, see HTP-ZZ-07101-DTI-REMP-SMPL-SCHED.

18 Table 5.2. Collection Frequencies and Required Analyses 1 (January 1 through December 31, 2020)

Sample Type Media Code Collection Frequency Required Analyses Direct radiation IDM Quarterly Gamma dose for each sample.

Neutron dose for the samples monitoring ISFSI direct radiation.

Airborne iodine AIO Weekly 131I Air particulate APT Weekly PGE4 each sample Surface water (river)

SWA Monthly composite PGE and 3H Surface water (onsite ponds)

SWA Semiannually PGE and 3H. If contaminated with gamma emitting nuclides of plant origin, analyze for HTD5 nuclides.

Groundwater (not potable)

WWA Quarterly6 PGE and 3H. If contaminated with gamma emitting nuclides of plant origin, analyze for HTD nuclides.7 Well water-potable DWA Quarterly PGE and 3H. If contaminated with gamma emitting nuclides of plant origin, analyze for HTD nuclides.

Shoreline sediment AQS Semiannually PGE Bottom sediment 2 AQS Semiannually PGE Sludge pond sediment SOL Annually PGE Soil SOL Annually PGE Milk animal MLK Semimonthly when animals are on pasture, monthly other times PGE and 131I Leafy green vegetables FPL Monthly when available 3 PGE and 131I Inedible crops FC At time of harvest PGE and 3H Fish AQF Semiannually PGE on edible portion 1 Samples required by ODCM unless specified otherwise.

2 Required by NPDES permit.

3 The growing season is defined as the months April 1-November 1, but will vary according to weather conditions.

4 Principal Gamma Emitters (PGE) are defined as 54Mn, 59Fe, 58Co, 60Co, 65Zn, 95Zr/Nb, 134Cs, 137Cs, 140Ba/La and other gamma-emitting nuclides that may be identified during the gamma spectroscopy analysis.

5 Hard to Detect (HTD) nuclides are defined as 89Sr, 90Sr, 55Fe, 63Ni, 237Np, 238Pu, 239/240Pu, 241Pu, 241Am, 242Cm and 243/244Cm.

6 Monthly for locations U1MW-936, U1MW-937B, U1MW-937D, U1MW-939R, U1MW-940, U1MW-941 and U1MW-GWS.

7 Wells ISFSI Sump, U1MW-18, U1MW-19, U1MW-20, U1MW-31, U1MW-34, U1MW-36, U1MW-39, U1MW-47, U1MW-58, U1MW-59, Old Blowdown Pipeline, U2MW-2S, U2MW-5S, U2MW-8, and U2MW-16 are analyzed for tritium only.

19 Table 5.3. Minimum Required Detection Capabilities for REMP Sample Analysis1 Analysis Water (pCi/L)

Airborne (pCi/m3)

Fish (pCi/kg wet)

Milk (pCi/L)

Food Products (pCi/kg wet)

Non-Food Products (pCi/kg wet)

Soil and Sediment (pCi/kg dry)

H-3 3000/20003 3000 Mn-54 15 130 Fe-59 30 260 Co-58/60 15 130 Zn-65 30 260 Zr-Nb-95 2 15 I-131 1000/13 0.07 1

60 Cs-134 15 0.05 130 15 60 60 150 Cs-137 18 0.06 150 18 80 80 180 Ba-La-140 2 15 15 1 This list does not mean only these nuclides will be detected and reported. Other peaks which are measurable and identifiable will be reported.

2 Total activity, parent plus daughter activity.

3 LLDs for Surface and Drinking / Ground water are the same, with the exception of H-3 and I-131. The Drinking / Ground water LLDs for H-3 and I-131 are 2000 and 1 pCi/liter respectively.

20 Table 5.4 2020 Land Use Census Results Closest Receptor in Miles Sector Residence Garden 1, 2 Milk 1 N(A) 2.37 NI NI NNE(B) 2.16 NI NI NE(C) 2.26 NI NI ENE(D) 2.86 NI NI E(E) 3.51 NI NI ESE(F) 2.11 4.47 NI SE(G) 2.72 NI NI SSE(H) 3.11 3.28 NI S(J) 2.86 NI NI SSW(K) 2.38 NI NI SW(L) 2.63 2.72 NI WSW(M) 1.20 1.96 NI W(N) 1.56 3.55 NI WNW(P) 1.93 1.93 NI NW(Q) 2.07 NI NI NNW(R) 1.81 NI NI 1 NI = None Identified.

2 Broadleaf Vegetation

21 Table 5.5. Missed collections and analyses, Callaway Energy Center Sample Collection Date Type Analysis Location(s) or Period Comments APT Gamma CA-A-008 01-30-20 Air station failed to collect a full weeks sample.

AIO I-131 CA-A-008 01-30-20 Air station failed to collect a full weeks sample.

FPL Gamma, I-131 CA-FPL-V9 04-14-20 Garden not yet producing.

FPL Gamma, I-131 CA-FPL-V12 04-14-20 Garden not yet producing.

FPL Gamma, I-131 CA-FPL-V16 04-14-20 Garden not yet producing.

FPL Gamma, I-131 CA-FPL-V19 04-14-20 Garden not yet producing.

FPL Gamma, I-131 CA-FPL-V9 05-12-20 Garden not yet producing.

FPL Gamma, I-131 CA-FPL-V19 05-12-20 Garden not yet producing.

WWA H-3 Inside Old Blowdown Line 07-17-20 Location dry; unable to collect water sample.

FPL Gamma, I-131 CA-FPL-V19 08-18-20 Vegetables not available.

IDM Gamma CA-IDM-49 3rd Qtr 2020 TLD missing from station 49.

WWA H-3 U1MW-047 10-07-20 Unable to collect water at location.

WWA H-3 Inside Old Blowdown Line 10-20-20 Location dry; unable to collect water sample.

DWA H-3, Gamma CA-DWA-08 10-28-20 Drinking water sample unobtainable.

FC H-3, Gamma CA-FC-1 10-13-20 Inedible crop sample not planted at location.

APT Gamma CA-A-008 11-12-20 Sampler found not running; Data on sampler lost.

AIO I-131 CA-A-008 11-12-20 Sampler found not running; Data on sampler lost.

22 Table 5.6 Radiological Environmental Monitoring Program Summary Sample Type (Units)

Type and Number of Analyses(a)

Req'd LLD(b)

Indicator Locations

Mean, Fraction, Range (c)

Location with Highest Annual Mean Control Locations

Mean, Fraction, Range (c)

Number Non-Routine Results(e)

Location (d)

Mean, Fraction, Range (c)

Waterborne Pathway Surface Water (pCi/L)

H-3 24 3000 282(6/12)

(172-510)

CA-SWA-S02 4.9 mi 138 o / SE 282 (6/12)

(172-510)

ND 0

GS 24 (b)

ND ND 0

Surface Water, Ponds (pCi/L)

H-3 18 3000 ND None 0

GS 18 (b)

ND None 0

Potable Wells (pCi/L)

H-3 60 2000 ND ND 0

GS 60 (b)

ND ND 0

Wells (non-potable)

(pCi/L)

H-3 208 3000 424 (71/208)

(159-3222)

CA-WWA-GWS 0.02 mi. 135 o / SE 845 (12/13)

(248-3222)

None 0

GS 144 (b)

ND None 0

Sediments (pCi/kg) dry Cs-134 8

150 ND ND 0

Cs-137 8

180 43 (1/4)

CA-AQS-C

~4.9. mi 138 o / SE 43 (1/4) 26 (2/4) 0 Airborne Pathway Airborne Particulates (pCi/m3)

GS 310 (b)

ND None 0

Airborne Iodine (pCi/m3)

I-131 310 0.07 ND None 0

Soil Soil (pCi/kg) dry Cs-134 8

150 ND ND 0

Cs-137 8

180 228 (6/6)

(69-482)

F2 1.0 mi. 235 o / SW 482 (1/1) 126 (1/2) 0

23 Table 5.6 Radiological Environmental Monitoring Program Summary Sample Type (Units)

Type and Number of Analyses(a)

Req'd LLD(b)

Indicator Locations

Mean, Fraction, Range (c)

Location with Highest Annual Mean Control Locations

Mean, Fraction, Range (c)

Number Non-Routine Results(e)

Location (d)

Mean, Fraction, Range (c)

Ingestion Pathway Food Products Leafy Green Vegetables (pCi/kg wet)

GS 59 (b)

ND ND 0

Non-food Products Soybeans (pCi/kg) wet H-3 (f) 7 3000 ND ND 0

GS 7

(b)

ND ND 0

Fish Edible Flesh (pCi/kg) wet GS 20 (b)

ND ND 0

Milk (pCi/L)

I-131 0

1 none ND 0

GS 0

(b) none ND 0

Direct Radiation (Quarterly TLDs)

(mrem/Qtr)

Gamma 175 15.0(163/163)

(10.2-17.2)

CA-IDM-27 9.3 mi. 114 o / ESE 16.7 (4/4)

(16.3-17.1) 14.3 (12/12)

(10.6-17.1) 0 Neutron 20 ND ND 0

(a) GS = gamma spectroscopy.

(b) LLD = nominal lower limit of detection based on a 4.66 sigma counting error for background sample. LLD's for gamma spectroscopy are in Table 5.3.

(c) Mean and range are based on detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parentheses (F). ND= not detected.

(d) Locations are specified by station code (Table 5.2) 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 preoperational value for the location.

(f) Units: pCi/L.

24 Table 5.7 Direct Radiation Dose (mrem/90 days) for the Period 2000-2019 Station Code Mean 3

Mean + 3 Max CA-IDM-1A 15.9 2.8 18.7 18.0 CA-IDM-3*

16.9 2.9 19.7 20.0 CA-IDM-5 14.3 2.7 17.0 17.1 CA-IDM-6 16.4 3.4 19.8 19.0 CA-IDM-7 16.1 3.1 19.2 19.0 CA-IDM-9 15.0 2.5 17.5 17.0 CA-IDM-10 17.0 2.6 19.7 19.3 CA-IDM-11A 17.1 2.9 19.9 19.3 CA-IDM-14 15.9 2.7 18.6 18.7 CA-IDM-17 16.0 3.0 19.0 18.3 CA-IDM-18A 16.1 4.6 20.8 18.9 CA-IDM-20 16.5 2.9 19.4 19.3 CA-IDM-21 16.4 3.3 19.7 19.0 CA-IDM-22A*

14.5 5.1 19.6 18.0 CA-IDM-23 16.5 2.7 19.2 19.0 CA-IDM-26(C) 11.4 2.3 13.7 13.1 CA-IDM-27(C) 17.1 2.9 20.0 20.0 CA-IDM-30A 15.7 2.8 18.4 18.2 CA-IDM-31A 17.0 2.6 19.6 19.0 CA-IDM-32 16.7 2.9 19.5 19.0 CA-IDM-32A 16.1 3.9 20.0 20.0 CA-IDM-33 15.9 2.7 18.6 18.0 CA-IDM-34 15.4 2.8 18.2 18.0 CA-IDM-35 14.8 2.6 17.3 17.3 CA-IDM-36 15.4 3.5 18.9 18.7 CA-IDM-37 15.8 2.7 18.5 18.0 CA-IDM-38 11.4 2.2 13.6 13.9 CA-IDM-39 15.8 3.1 18.9 19.0 CA-IDM-39A 16.4 3.1 19.5 19.0 CA-IDM-40 16.9 3.2 20.2 19.2 CA-IDM-41 15.8 3.0 18.8 19.0 CA-IDM-42 13.6 2.5 16.1 15.6 CA-IDM-43 15.9 2.9 18.8 18.7 CA-IDM-44 16.2 3.3 19.5 19.0 CA-IDM-45*

14.8 3.2 18.0 20.0 CA-IDM-46 16.4 2.8 19.2 19.9 CA-IDM-47 15.6 2.8 18.4 18.0 CA-IDM-48 16.5 2.7 19.3 19.0 CA-IDM-49 15.4 3.0 18.4 18.0 CA-IDM-50 16.2 2.9 19.1 20.0 CA-IDM-51A 17.0 2.8 19.8 19.8 CA-IDM-52 16.7 2.6 19.3 19.1 CA-IDM-60(C)*

16.0 2.7 18.7 18.0 CA-IDM-61*

14.4 2.0 16.4 15.7

ISFSI monitoring (C) Control location

25

6.0 REFERENCES

Arnold, J. R. and H. A. Al-Salih. 1955. Beryllium-7 Produced by Cosmic Rays. Science 121: 451-453.

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

Environmental, Inc., Midwest Laboratory. 2001 - 2019. Environmental Radiological Monitoring Program for the Callaway Energy Center, Annual Report - Part II, Data Tabulations and Analyses, January - December, 2000 - 2019 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.

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

Hammer, Gregory R.,Climate of Missouri, monograph available from the National Climatic Data Center (NCDC) of the National Oceanic and Atmospheric Administration (NOAA). January, 2006.

National Center for Radiological Health, 1968. Radiological Health and Data Reports, Vol. 9, Number 12, 730-746.

Stanford Dosimetry, LLC, 22 March 2021. Environmental Dosimetry Company, Annual Quality Assurance Status Report, January-December, 2020.

Teledyne Brown Engineering Environmental Services, Midwest Laboratory. 1999 - 2000. Environmental Radiological Monitoring Program for the Callaway Plant, Annual Report - Part II, Data Tabulations and Analyses, January

- December, 1998 - 1999.

U.S. Environmental Protection Agency, 2007. RadNet, formerly Environmental Radiation Ambient Monitoring System, Gross Beta in Air (MO) 1981 - 2006, Gross Beta in Drinking Water (MO) 1982-2004.

Wilson, D. W., G. M. Ward and J. E. Johnson. 1969. Environmental Contamination by Radioactive Materials, International Atomic Energy Agency. p.125.

A Environmental, Inc.

i*

I I Midwest Laboratory 700 Landwehr Road

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

fax (847) 564-4517 APPENDIX A INTERLABORATORY AND INTRALABORATORY COMPARISON PROGRAM RESULTS NOTE:

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

January, 2020 through December, 2020

A-1 Environmental, Inc., Midwest Laboratory has participated in interlaboratory comparison (crosscheck) programs since the formulation of its 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 laboratorys 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 intralaboratory spiked samples for the past twelve months. All samples are prepared using NIST traceable sources. Data for previous years available upon request.

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

Table A-6 lists analytical results from the intralaboratory duplicate program for the past twelve months. Acceptance is based on each result being within 25% of the mean of the two results or the two sigma uncertainties of each result overlap.

The results in Table A-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 Testing Program administered by Environmental Resource Associates, serving as a replacement for studies conducted previously by the Environmental Measurement Laboratory Quality Assessment Program (EML).

Attachment A lists the laboratory acceptance criteria for various analyses.

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

Appendix A Interlaboratory/ Intralaboratory Comparison Program Results

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

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

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

RAD study Lab Code Date Analysis ERA Result Acceptance RAD-120 Study ERW-49 1/6/2020 Ba-133 60.8 +/- 4.4 64.5 53.7 - 71.0 Pass ERW-49 1/6/2020 Cs-134 22.7 +/- 2.8 22.9 17.5 - 25.6 Pass ERW-49 1/6/2020 Cs-137 225 +/- 8 220 198 - 244 Pass ERW-49 1/6/2020 Co-60 94.6 +/- 4.6 91.2 82.1 - 103 Pass ERW-49 1/6/2020 Zn-65 331 +/- 13 298 268 - 348 Pass ERDW-51 1/6/2020 Gr. Alpha 52.3 +/- 2.4 58.9 30.8 - 73.3 Pass ERDW-51 1/6/2020 Gr. Beta 19.9 +/- 1.0 21.0 12.6 - 29.1 Pass ERDW-53 1/6/2020 Ra-226 12.8 +/- 0.5 17.4 12.9 - 19.9 Failb ERDW-53 1/6/2020 Ra-228 7.13 +/- 0.9 7.95 5.06 - 10.1 Pass ERDW-53 1/6/2020 Uranium 63.8 +/- 1.0 68.2 55.7 - 75.0 Pass ERW-55 1/6/2020 H-3 18,200 +/- 408 17,800 15,600 - 19,600 Pass RAD-121 Study ERDW-1034 4/6/2020 Ra-226 17.8 +/- 0.5 18.4 13.7 - 21.0 Pass ERDW-1034 4/6/2020 Ra-228 6.30 +/- 0.86 5.81 3.56 - 7.64 Pass ERDW-1034 4/6/2020 Uranium 18.7 +/- 1.3 18.6 14.9 - 20.9 Pass RAD-122 Study ERW-2297 7/6/2020 Ba-133 43.8 +/- 3.4 58.6 48.6 - 64.6 Failc ERW-2297 7/6/2020 Cs-134 19.8 +/- 2.4 22.3 17.0 - 25.0 Pass ERW-2297 7/6/2020 Cs-137 73.2 +/- 5.4 73.0 65.7 - 83.0 Pass ERW-2297 7/6/2020 Co-60 90.0 +/- 4.0 86.1 77.5 - 97.0 Pass ERW-2297 7/6/2020 Zn-65 84.9 +/- 7.5 82.9 74.6 - 99.6 Pass ERDW-2299 7/6/2020 Gr. Alpha 40.3 +/- 2.2 52.40 27.30 - 65.6 Pass ERDW-2299 7/6/2020 Gr. Beta 19.9 +/- 1.0 24.3 15.0 - 32.3 Pass ERDW-2303 7/6/2020 Ra-226 8.91 +/- 0.43 10.8 8.08 - 12.5 Pass ERDW-2303 7/6/2020 Ra-228 4.79 +/- 0.80 5.42 3.28 - 7.19 Pass ERDW-2303 7/6/2020 Uranium 27.7 +/- 0.9 29.3 23.7 - 32.5 Pass ERW-2305 7/6/2020 H-3 21,100 +/- 400 20,300 17,800 - 22,300 Pass ERW-2301 7/6/2020 I-131 27.8 +/- 1.2 26.1 21.7 - 30.8 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by Environmental Resource Associates (ERA).

b Ra-226 was slightly below the lower limit of the study. The reported value was the mean of two results (12.5 & 13.0).

The sample was re-run in duplicate and both results, 15.6 and 13.8 pCi/L, were within the acceptance band.

c Ba-133 was below the lower acceptable limit of the study. No cause for the failure could be identified. Going forward gamma results will be monitored to see if any trend develops.

Concentration (pCi/L)

Laboratory Control Result Limits

A-4 TABLE A-2. Interlaboratory Comparison Crosscheck program, New York Department of Health (ELAP)a.

Lab Code Date Analysis Assigned Value Acceptance Shipment 437R NYW-3307 9/15/2020 H-3 11,500 +/- 465 11,208 9760 - 12,300 Pass NYW-3331 9/15/2020 Gross Alpha 43.7 +/- 2.5 64.9 34.0 - 80.4 Pass NYW-3331 9/15/2020 Gross Beta 11.1 +/- 1.1 8.85 3.62 - 17.4 Pass NYW-3335 9/15/2020 I-131 14.1 +/- 1.4 12.6 10.3 - 16.0 Pass NYW-3333 9/15/2020 Ra-226 2.24 +/- 0.27 2.63 2.06 - 3.44 Pass NYW-3333 9/15/2020 Ra-228 4.91 +/- 1.12 5.41 3.27 - 7.18 Pass NYW-3333 9/15/2020 Uranium 42.8 +/- 1.94 37.1 30.1 - 41.0 Failb NYW-3337 9/15/2020 Co-60 46.4 +/- 3.8 42.3 38.1 - 49.2 Pass NYW-3337 9/15/2020 Zn-65 133 +/- 9 116 104 - 138 Pass NYW-3337 9/15/2020 Ba-133 49.5 +/- 4.1 46.4 38.0 - 51.6 Pass NYW-3337 9/15/2020 Cs-134 32.5 +/- 3.1 33.0 26.0 - 36.3 Pass NYW-3337 9/15/2020 Cs-137 147 +/- 7 134 121 - 150 Pass a Results obtained by Environmental, Inc., Midwest Laboratory as a participant in the crosscheck program for proficiency testing in drinking water conducted by the New York Department of Health Laboratory Approval Program(NY ELAP).

b Lab passed all ERA and MAPEP studies for uranium in 2020.(See tables A-1, A-7 and A-8) Uncertainty overlapped upper acceptance limit. Lab will continue to monitor results going forward for trends.

Concentration (pCi/L)

Laboratory Acceptance Result Limits

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A-7 TABLE A-4. Intralaboratory "Spiked" Samples Lab Codeb Date Analysis Known Ratio Activity Acceptance Lab/Known SPW-481 1/1/2020 Ra-226 10.4 +/- 0.3 12.3 8.6 - 16.0 Pass 0.85 SPW-110 1/16/2020 H-3 2,101 +/- 154 2,110 1,688 - 2,532 Pass 1.00 W-041620 4/29/2016 Cs-134 35.7 +/- 8.8 36.2 29.0 - 43.4 Pass 0.99 W-041620 4/29/2016 Cs-137 75.0 +/- 6.6 71.9 57.5 - 86.3 Pass 1.04 W-042020 4/29/2016 Cs-134 40.6 +/- 10.2 36.2 29.0 - 43.4 Pass 1.12 W-042020 4/29/2016 Cs-137 71.2 +/- 7.0 71.9 57.5 - 86.3 Pass 0.99 SPW-190 1/23/2020 H-3 2,058 +/- 153 2,110 1,688 - 2,532 Pass 0.98 SPW-205 1/28/2020 Sr-90 17.6 +/- 1.2 17.9 14.3 - 21.5 Pass 0.99 SPW-217 1/31/2020 H-3 2,005 +/- 152 2,110 1,688 - 2,532 Pass 0.95 SPW-270 2/7/2020 H-3 2,153 +/- 157 2,110 1,688 - 2,532 Pass 1.02 SPW-288 2/11/2020 Ra-228 13.1 +/- 1.7 14.9 10.4 - 19.3 Pass 0.88 W-021220 4/29/2016 Cs-134 39.3 +/- 18.9 36.2 29.0 - 43.4 Pass 1.09 W-021220 4/29/2016 Cs-137 73.9 +/- 15.8 71.9 57.5 - 86.3 Pass 1.03 SPW-396 2/14/2020 H-3 2,298 +/- 160 2,110 1,688 - 2,532 Pass 1.09 W-022420 4/29/2016 Cs-134 33.4 +/- 10.5 36.2 29.0 - 43.4 Pass 0.92 W-022420 4/29/2016 Cs-137 75.6 +/- 7.8 71.9 57.5 - 86.3 Pass 1.05 SPW-716 2/26/2020 Ra-226 11.3 +/- 0.4 12.3 8.6 - 16.0 Pass 0.92 W-022820 4/29/2016 Cs-134 34.9 +/- 11.6 36.2 29.0 - 43.4 Pass 0.96 W-022820 4/29/2016 Cs-137 82.9 +/- 8.5 71.9 57.5 - 86.3 Pass 1.15 SPW-532 2/28/2020 H-3 2,054 +/- 153 2,110 1,688 - 2,532 Pass 0.97 W-030420 4/29/2016 Cs-134 29.7 +/- 9.6 36.2 29.0 - 43.4 Pass 0.82 W-030420 4/29/2016 Cs-137 74.2 +/- 7.3 71.9 57.5 - 86.3 Pass 1.03 W-031020 4/29/2016 Cs-134 41.6 +/- 17.8 36.2 29.0 - 43.4 Pass 1.15 W-031020 4/29/2016 Cs-137 78.6 +/- 14.3 71.9 57.5 - 86.3 Pass 1.09 SPW-711 3/12/2020 H-3 2,083 +/- 154 2,110 1,688 - 2,532 Pass 0.99 SPW-825 3/12/2020 Ra-226 12.4 +/- 0.4 12.3 8.6 - 16.0 Pass 1.01 SPW-774 3/18/2020 H-3 2,021 +/- 151 2,110 1,688 - 2,532 Pass 0.96 W-031820 4/29/2016 Cs-134 29.7 +/- 10.6 36.2 29.0 - 43.4 Pass 0.82 W-031820 4/29/2016 Cs-137 75.5 +/- 9.2 71.9 57.5 - 86.3 Pass 1.05 W-032520 4/29/2016 Cs-134 36.4 +/- 9.2 36.2 29.0 - 43.4 Pass 1.01 W-032520 4/29/2016 Cs-137 74.9 +/- 7.0 71.9 57.5 - 86.3 Pass 1.04 SPW-877 3/31/2020 Ra-228 13.0 +/- 2.0 14.9 10.4 - 19.3 Pass 0.88 SPW-925 3/23/2020 Ra-226 10.7 +/- 0.4 12.3 8.6 - 16.0 Pass 0.87 SPW-859 3/27/2020 H-3 2,065 +/- 153 2,110 1,688 - 2,532 Pass 0.98 W-040320 4/29/2016 Cs-134 38.1 +/- 10.3 36.2 29.0 - 43.4 Pass 1.05 W-040320 4/29/2016 Cs-137 78.6 +/- 7.5 71.9 57.5 - 86.3 Pass 1.09 SPDW-1009 4/8/2020 Gr. Alpha 11.5 +/- 0.9 18.7 9.4 - 28.1 Pass 0.61 SPDW-1009 4/8/2020 Gr. Beta 22.0 +/- 1.0 26.1 20.9 - 31.3 Pass 0.84 SPW-1033 4/9/2020 H-3 2,041 +/- 153 2,110 1,688 - 2,532 Pass 0.97 W-040920 4/29/2016 Cs-134 34.3 +/- 9.4 36.2 29.0 - 43.4 Pass 0.95 W-040920 4/29/2016 Cs-137 77.9 +/- 8.0 71.9 57.5 - 86.3 Pass 1.08 SPW-1145 4/15/2020 Ra-228 14.3 +/- 2.0 14.9 10.4 - 19.3 Pass 0.96 SPW-1186 4/17/2020 H-3 1,972 +/- 151 2,110 1,688 - 2,532 Pass 0.93 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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

c Results are based on single determinations.

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

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

A-8 TABLE A-4. Intralaboratory "Spiked" Samples Lab Codeb Date Analysis Known Ratio Activity Acceptance Lab/Known SPW-1284 4/24/2020 H-3 2,015 +/- 153 2,110 1,688 - 2,532 Pass 0.95 SPW-1745 4/24/2020 Ra-226 11.9 +/- 0.3 12.3 8.6 - 16.0 Pass 0.97 W-042220 4/29/2016 Cs-134 33.7 +/- 9.2 36.2 29.0 - 43.4 Pass 0.93 W-042220 4/29/2016 Cs-137 74.9 +/- 6.6 71.9 57.5 - 86.3 Pass 1.04 W-042420 4/29/2016 Cs-134 33.3 +/- 10.8 36.2 29.0 - 43.4 Pass 0.92 W-042420 4/29/2016 Cs-137 73.7 +/- 8.5 71.9 57.5 - 86.3 Pass 1.03 W-043020 4/29/2016 Cs-134 33.7 +/- 15.7 36.2 29.0 - 43.4 Pass 0.93 W-043020 4/29/2016 Cs-137 72.5 +/- 7.1 71.9 57.5 - 86.3 Pass 1.01 SPW-1327 5/1/2020 H-3 2,071 +/- 153 2,110 1,688 - 2,532 Pass 0.98 W-050520 4/29/2016 Cs-134 31.1 +/- 11.9 36.2 29.0 - 43.4 Pass 0.86 W-050520 4/29/2016 Cs-137 73.2 +/- 8.3 71.9 57.5 - 86.3 Pass 1.02 SPW-1394 5/5/2020 Sr-90 18.1 +/- 1.1 17.9 14.3 - 21.5 Pass 1.01 W-050720 4/29/2016 Cs-134 39.9 +/- 2.0 36.2 29.0 - 43.4 Pass 1.10 W-050720 4/29/2016 Cs-137 75.2 +/- 14.3 71.9 57.5 - 86.3 Pass 1.05 SPW-1500 5/18/2020 Ra-228 13.8 +/- 1.9 14.9 10.4 - 19.3 Pass 0.93 W-052020 4/29/2016 Cs-134 33.1 +/- 1.2 36.2 29.0 - 43.4 Pass 0.91 W-052020 4/29/2016 Cs-137 80.8 +/- 8.3 71.9 57.5 - 86.3 Pass 1.12 SPW-1613 5/22/2020 H-3 1,953 +/- 149 2,110 1,688 - 2,532 Pass 0.93 W-052620 4/29/2016 Cs-134 31.0 +/- 9.2 36.2 29.0 - 43.4 Pass 0.86 W-052620 4/29/2016 Cs-137 74.6 +/- 7.5 71.9 57.5 - 86.3 Pass 1.04 SPW-2061 5/21/2020 Ra-226 10.4 +/- 0.3 12.3 8.6 - 16.0 Pass 0.85 W-052620 4/29/2016 Cs-134 33.6 +/- 12.8 36.2 29.0 - 43.4 Pass 0.93 W-052620 4/29/2016 Cs-137 69.2 +/- 7.7 71.9 57.5 - 86.3 Pass 0.96 SPW-1741 5/27/2020 H-3 1,925 +/- 150 2,110 1,688 - 2,532 Pass 0.91 SPW-1824 6/3/2020 H-3 1,971 +/- 151 2,110 1,688 - 2,532 Pass 0.93 SPW-1853 6/4/2020 H-3 2,027 +/- 153 2,110 1,688 - 2,532 Pass 0.96 W-061120 4/29/2016 Cs-134 39.8 +/- 21.0 36.2 29.0 - 43.4 Pass 1.10 W-061120 4/29/2016 Cs-137 79.3 +/- 13.5 71.9 57.5 - 86.3 Pass 1.10 SPW-1982 6/12/2020 H-3 2,065 +/- 154 2,110 1,688 - 2,532 Pass 0.98 SPW-2038 6/18/2020 H-3 2,012 +/- 154 2,110 1,688 - 2,532 Pass 0.95 SPW-2116 6/25/2020 H-3 2,051 +/- 159 2,110 1,688 - 2,532 Pass 0.97 SPW-2173 7/1/2020 H-3 2,010 +/- 154 2,110 1,688 - 2,532 Pass 0.95 SPW-2328 7/10/2020 H-3 1,924 +/- 151 2,110 1,688 - 2,532 Pass 0.91 SPW-2458 7/16/2020 H-3 1,932 +/- 151 2,110 1,688 - 2,532 Pass 0.92 SPW-2556 7/27/2020 Sr-90 16.8 +/- 1.1 17.9 14.3 - 21.5 Pass 0.94 SPW-2558 7/6/2020 Gr. Alpha 29.9 +/- 2.1 58.9 29.5 - 88.4 Pass 0.51 SPW-2558 7/6/2020 Gr. Beta 20.0 +/- 1.0 21.0 16.8 - 25.2 Pass 0.95 SPW-2640 7/31/2020 H-3 1,984 +/- 154 2,110 1,688 - 2,532 Pass 0.94 SPW-2778 8/7/2020 H-3 1,936 +/- 151 2,110 1,688 - 2,532 Pass 0.92 SPW-2797 6/22/2020 Ra-226 10.4 +/- 0.3 12.3 8.6 - 16.0 Pass 0.85 SPW-2852 8/11/2020 Ra-228 10.2 +/- 1.6 12.5 8.7 - 16.2 Pass 0.82 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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

c Results are based on single determinations.

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

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

A-9 TABLE A-4. Intralaboratory "Spiked" Samples Lab Codeb Date Analysis Known Ratio Activity Acceptance Lab/Known SPW-2854 8/14/2020 H-3 1,927 +/- 153 2,110 1,688 - 2,532 Pass 0.91 SPW-2890 8/4/2020 Ra-226 11.6 +/- 0.4 12.3 8.6 - 16.0 Pass 0.95 SPW-3013 8/24/2020 H-3 2,005 +/- 153 2,110 1,688 - 2,532 Pass 0.95 SPW-3053 8/28/2020 H-3 1,904 +/- 149 2,110 1,688 - 2,532 Pass 0.90 SPW-3123 8/19/2020 Ra-226 10.4 +/- 0.3 12.3 8.6 - 16.0 Pass 0.85 SPW-3447 9/3/2020 Ra-226 9.8 +/- 0.3 12.3 8.6 - 16.0 Pass 0.80 SPW-3241 9/11/2020 H-3 1,952 +/- 154 2,110 1,688 - 2,532 Pass 0.93 SPW-3425 9/23/2020 Ra-228 10.7 +/- 1.6 12.3 8.6 - 16.0 Pass 0.87 SPW-3412 9/25/2020 H-3 2,099 +/- 155 2,110 1,688 - 2,532 Pass 0.99 SPW-4131 9/30/2020 Ra-226 13.2 +/- 0.4 12.3 8.6 - 16.0 Pass 1.07 SPW-3482 10/2/2020 H-3 1,984 +/- 154 2,110 1,688 - 2,532 Pass 0.94 SPW-3624 10/9/2020 H-3 1,924 +/- 152 2,110 1,688 - 2,532 Pass 0.91 SPW-3794 10/16/2020 H-3 2,109 +/- 156 2,110 1,688 - 2,532 Pass 1.00 SPW-3836 10/20/2020 Sr-90 16.8 +/- 1.1 17.9 14.3 - 21.5 Pass 0.94 SPW-4043 10/23/2020 H-3 1893.4 +/- 148.8 2,110 1,688 - 2,532 Pass 0.90 SPW-4179 10/28/2020 Ra-228 15.4 +/- 2.4 12.1 8.5 - 15.7 Pass 1.27 SPW-4422 10/30/2020 Ra-226 12.3 +/- 0.3 12.3 8.6 - 16.0 Pass 1.00 SPW-4234 11/11/2020 H-3 2,008 +/- 154 2,110 1,688 - 2,532 Pass 0.95 SPW-4634 11/23/2020 Ra-226 11.4 +/- 0.3 12.3 8.6 - 16.0 Pass 0.93 SPW-4509 12/4/2020 H-3 1,873 +/- 149 2,110 1,688 - 2,532 Pass 0.89 SPW-4625 12/18/2020 H-3 1,940 +/- 152 2,110 1,688 - 2,532 Pass 0.92 SPW-4741 12/18/2020 Ra-226 12.5 +/- 0.4 12.3 8.6 - 16.0 Pass 1.02 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/kg).

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

c Results are based on single determinations.

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

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

A-10 TABLE A-5. Intralaboratory "Blank" Samples Lab Codeb Sample Date Analysisc Type LLD SPW-480 Water 1/1/2020 Ra-226 0.03 0.12 +/- 0.02 2

SPW-93 Water 1/7/2020 Gr. Alpha 0.35 0.47 +/- 0.29 2

SPW-93 Water 1/7/2020 Gr. Beta 0.74 0.18 +/- 0.53 4

SPW-109 Water 1/16/2020 H-3 157

-6 +/- 73 200 SPW-154 Water 1/16/2020 I-131 0.47

-0.22 +/- 0.21 1

SPW-189 Water 1/23/2020 H-3 158 0 +/- 73 200 SPW-204 Water 1/28/2020 Sr-89 0.64

-0.16 +/- 0.50 5

SPW-204 Water 1/28/2020 Sr-90 0.54 0.11 +/- 0.27 1

SPW-216 Water 1/31/2020 H-3 156 86 +/- 78 200 SPW-269 Water 2/7/2020 H-3 153 79 +/- 80 200 SPW-287 Water 2/11/2020 Ra-228 0.81 1.49 +/- 0.53 2

SPW-395 Water 2/14/2020 H-3 154 46 +/- 75 200 SPW-463 Water 2/25/2020 I-131 0.16 0.02 +/- 0.09 1

SPW-715 Water 2/26/2020 Ra-226 0.01 0.17 +/- 0.01 2

SPW-531 Water 2/28/2020 H-3 156 44 +/- 75 200 SPW-710 Water 3/12/2020 H-3 157

-16 +/- 72 200 SPW-824 Water 3/12/2020 Ra-226 0.03 0.15 +/- 0.03 2

SPW-773 Water 3/18/2020 H-3 151 76 +/- 76 200 SPW-876 Water 3/31/2020 Ra-228 0.88 0.57 +/- 0.47 2

SPW-924 Water 3/23/2020 Ra-226 0.04 0.18 +/- 0.03 2

SPW-1032 Water 4/9/2020 H-3 157 68 +/- 77 200 SPW-1144 Water 4/15/2020 Ra-228 0.89 0.03 +/- 0.42 2

SPW-1185 Water 4/17/2020 H-3 158 8 +/- 74 200 SPW-1283 Water 4/24/2020 H-3 156 10 +/- 75 200 SPW-1744 Water 4/24/2020 Ra-226 0.03

-0.01 +/- 0.03 2

SPW-1326 Water 5/1/2020 H-3 153 67 +/- 75 200 SPW-1393 Water 5/5/2020 Sr-89 0.66 0.11 +/- 0.44 5

SPW-1393 Water 5/5/2020 Sr-90 0.63

-0.27 +/- 0.26 1

SPW-1499 Water 5/18/2020 Ra-228 0.88 0.03 +/- 0.41 2

SPW-1541 Water 5/19/2020 I-131 0.20 0.00 +/- 0.11 1

SPW-2060 Water 5/21/2020 Ra-226 0.03

-0.01 +/- 0.02 2

SPW-1612 Water 5/22/2020 H-3 153 91 +/- 76 200 SPW-1740 Water 5/27/2020 H-3 158

-26 +/- 71 200 SPW-1823 Water 6/3/2020 H-3 157 18 +/- 74 200 SPW-1852 Water 6/4/2020 H-3 159 33 +/- 76 200 SPW-1981 Water 6/12/2020 H-3 149 52 +/- 77 200 SPW-2037 Water 6/18/2020 H-3 156 101 +/- 81 200 SPW-2115 Water 6/25/2020 H-3 158 56 +/- 86 200 a Liquid sample results are reported in pCi/Liter, air filters ( pCi/m3), charcoal (pCi/charcoal canister), and solid samples (pCi/g).

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

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

d Activity reported is a net activity result.

Concentrationa Laboratory results (4.66s)

Acceptance Activityd Criteria (4.66 s)

A-11 TABLE A-5. Intralaboratory "Blank" Samples Lab Codeb Sample Date Analysisc Type LLD SPW-2172 Water 7/1/2020 H-3 159

-15 +/- 75 200 SPW-2327 Water 7/10/2020 H-3 158 50 +/- 77 200 SPW-2457 Water 7/16/2020 H-3 159

-46 +/- 71 200 SPW-2555 Water 7/27/2020 Sr-89 0.48 0.18 +/- 0.40 5

SPW-2555 Water 7/27/2020 Sr-90 0.54 0.03 +/- 0.25 1

SPW-2557 Water 7/6/2020 Gr. Alpha 0.37 0.25 +/- 0.28 2

SPW-2557 Water 7/6/2020 Gr. Beta 0.75

-0.23 +/- 0.52 4

SPW-2639 Water 7/31/2020 H-3 158 80 +/- 81 200 SPW-2777 Water 8/7/2020 H-3 157 0 +/- 74 200 SPW-2796 Water 6/22/2020 Ra-226 0.03

-0.02 +/- 0.03 2

SPW-2851 Water 8/11/2020 Ra-228 0.85 0.44 +/- 0.45 2

SPW-2853 Water 8/14/2020 H-3 158 18 +/- 77 200 SPW-2880 Water 8/18/2020 I-131 0.42

-0.04 +/- 0.22 1

SPW-2889 Water 8/4/2020 Ra-228 0.05 0.13 +/- 0.11 2

SPW-3012 Water 8/24/2020 H-3 159 59 +/- 77 200 SPW-3052 Water 8/28/2020 H-3 155 46 +/- 75 200 SPW-3122 Water 9/3/2020 Ra-226 0.03 0.20 +/- 0.03 2

SPW-3240 Water 9/11/2020 H-3 161 3 +/- 78 200 SPW-3446 Water 9/3/2020 Ra-226 0.01 0.12 +/- 0.02 2

SPW-3424 Water 9/23/2020 Ra-228 0.85 0.81 +/- 0.48 2

SPW-3411 Water 9/25/2020 H-3 158 82 +/- 78 200 SPW-4130 Water 9/30/2020 Ra-226 0.04 0.01 +/- 0.04 2

SPW-3481 Water 10/2/2020 H-3 154 63 +/- 80 200 SPW-3623 Water 10/9/2020 H-3 156 57 +/- 81 200 SPW-3793 Water 10/16/2020 H-3 157 3 +/- 73 200 SPW-3835 Water 10/20/2020 Sr-89 0.55

-0.10 +/- 0.43 5

SPW-3835 Water 10/20/2020 Sr-90 0.59 0.09 +/- 0.28 1

SPW-4042 Water 10/23/2020 H-3 155

-6 +/- 72 200 SPW-4178 Water 10/28/2020 Ra-228 1.04 0.33 +/- 0.52 2

SPW-4421 Water 10/30/2020 Ra-226 0.03 0.07 +/- 0.03 2

SPW-4233 Water 11/11/2020 H-3 155 78 +/- 79 200 SPW-4356 Water 11/20/2020 H-3 157 52 +/- 76 200 SPW-4633 Water 11/23/2020 Ra-226 0.05 0.04 +/- 0.11 2

SPW-4508 Water 12/4/2020 H-3 159

-68 +/- 69 200 SPW-4624 Water 12/18/2020 H-3 160 8 +/- 77 200 SPW-4740 Water 12/18/2020 Ra-226 0.04 0.02 +/- 0.03 2

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

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

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

d Activity reported is a net activity result.

Laboratory results (4.66s)

Acceptance Activityd Criteria (4.66 s)

Concentrationa

A-12 TABLE A-6. Intralaboratory "Duplicate" Samples Lab Codeb Date Analysis Acceptance SG-20,21 1/2/2020 Pb-214 2.23 +/- 0.12 1.61 +/- 0.09 1.92 +/- 0.08 Pass SG-20,21 1/2/2020 Ac-228 1.49 +/- 0.20 1.42 +/- 0.18 1.46 +/- 0.13 Pass AP-5060,5061 1/3/2020 Be-7 0.052 +/- 0.014 0.063 +/- 0.012 0.057 +/- 0.009 Pass AP-010720A,B 1/7/2020 Gr. Beta 0.023 +/- 0.004 0.022 +/- 0.004 0.022 +/- 0.003 Pass WW-72,73 1/7/2020 H-3 547 +/- 101 478 +/- 98 513 +/- 70 Pass WW-184,185 1/21/2020 H-3 265 +/- 88 311 +/- 90 288 +/- 63 Pass SWU-253,254 1/28/2020 Gr. Beta 1.73 +/- 0.58 2.10 +/- 0.62 1.92 +/- 0.42 Pass DW-20014,20015 1/29/2020 Ra-228 3.34 +/- 0.74 2.25 +/- 0.70 2.80 +/- 0.51 Pass DW-20014,20015 1/29/2020 Ra-226 1.05 +/- 0.15 0.64 +/- 0.24 0.85 +/- 0.14 Pass S-209,210 1/31/2020 K-40 8.28 +/- 0.20 7.95 +/- 0.42 8.12 +/- 0.23 Pass LW-383,384 1/31/2020 Gr. Beta 1.67 +/- 0.58 0.77 +/- 0.52 1.22 +/- 0.39 Pass AP-020320A,B 2/3/2020 Gr. Beta 0.021 +/- 0.004 0.024 +/- 0.004 0.023 +/- 0.003 Pass S-362,363 2/7/2020 Pb-214 2.39 +/- 0.11 2.25 +/- 0.10 2.32 +/- 0.07 Pass S-362,363 2/7/2020 Ac-228 1.84 +/- 0.18 1.95 +/- 0.17 1.90 +/- 0.12 Pass DW-20018,20019 2/7/2020 Gr. Alpha 0.23 +/- 0.86 0.37 +/- 0.88 0.30 +/- 0.62 Pass DW-20018,20019 2/7/2020 Gr. Beta 0.50 +/- 0.56 1.19 +/- 0.63 0.85 +/- 0.42 Pass DW-20026,20027 2/7/2020 Ra-226 2.40 +/- 0.21 2.11 +/- 0.15 2.26 +/- 0.13 Pass DW-20026,20027 2/7/2020 Ra-228 2.60 +/- 0.68 1.81 +/- 0.57 2.21 +/- 0.44 Pass WW-452,453 2/17/2020 H-3 583 +/- 102 678 +/- 106 630 +/- 74 Pass DW-20031,20032 2/25/2020 Gr. Alpha 1.02 +/- 0.77 0.80 +/- 0.81 0.91 +/- 0.56 Pass DW-20031,20032 2/25/2020 Gr. Beta 1.11 +/- 0.59 1.19 +/- 0.58 1.15 +/- 0.41 Pass DW-20038,20039 3/3/2020 Ra-226 8.39 +/- 0.43 8.78 +/- 0.49 8.59 +/- 0.33 Pass DW-20038,20039 3/3/2020 Ra-228 2.81 +/- 1.00 2.31 +/- 0.86 2.56 +/- 0.66 Pass WW-752,753 3/13/2020 H-3 435 +/- 94 393 +/- 92 414 +/- 66 Pass S-868,869 3/13/2020 Pb-214 0.97 +/- 0.10 0.99 +/- 0.09 0.98 +/- 0.07 Pass S-868,869 3/13/2020 Ac-228 0.93 +/- 0.18 1.01 +/- 0.23 0.97 +/- 0.15 Pass LW-977,978 3/25/2020 Gr. Beta 0.98 +/- 0.53 0.92 +/- 0.51 0.95 +/- 0.37 Pass AP-1220,1221 3/31/2020 Be-7 0.063 +/- 0.011 0.062 +/- 0.013 0.063 +/- 0.009 Pass SWT-912,913 3/31/2020 Gr. Beta 0.79 +/- 0.53 0.49 +/- 0.50 0.64 +/- 0.37 Pass AP-956,957 4/2/2020 Be-7 0.189 +/- 0.097 0.256 +/- 0.130 0.222 +/- 0.081 Pass AP-1110,1111 4/3/2020 Be-7 0.069 +/- 0.012 0.072 +/- 0.013 0.071 +/- 0.009 Pass WW-1047,1048 4/7/2020 H-3 438 +/- 96 478 +/- 98 458 +/- 69 Pass VE-1022,1023 4/8/2020 Be-7 9.28 +/- 0.57 8.00 +/- 0.62 8.64 +/- 0.42 Pass VE-1022,1023 4/8/2020 K-40 3.89 +/- 0.67 3.94 +/- 0.73 3.92 +/- 0.49 Pass S-1199,1200 4/12/2020 Pb-214 0.77 +/- 0.07 0.98 +/- 0.08 0.88 +/- 0.05 Pass S-1199,1200 4/12/2020 Ac-228 1.09 +/- 0.15 1.18 +/- 0.17 1.14 +/- 0.11 Pass SS-1419,1420 4/14/2020 K-40 10.8 +/- 0.6 9.4 +/- 0.4 10.1 +/- 0.4 Pass AP-1241,1242 4/16/2020 Be-7 0.203 +/- 0.113 0.245 +/- 0.145 0.224 +/- 0.092 Pass DW-20051,20052 4/23/2020 Ra-228 3.50 +/- 0.85 4.60 +/- 0.89 4.05 +/- 0.62 Pass DW-20051,20052 4/23/2020 Ra-226 0.80 +/- 0.10 0.60 +/- 0.10 0.70 +/- 0.07 Pass SS-1310,1311 4/23/2020 K-40 7,827 +/- 492 8,157 +/- 505 7,992 +/- 352 Pass LW-1375,1376 4/29/2020 Gr. Beta 1.62 +/- 0.59 1.61 +/- 0.58 1.62 +/- 0.41 Pass Concentrationa Averaged First Result Second Result Result

A-13 TABLE A-6. Intralaboratory "Duplicate" Samples Lab Codeb Date Analysis Acceptance F-1828,1829 4/29/2020 K-40 1.35 +/- 0.41 0.98 +/- 0.33 1.16 +/- 0.27 Pass SG-1398,1399 5/5/2020 Pb-214 7.51 +/- 0.19 8.62 +/- 0.17 8.07 +/- 0.13 Pass SG-1398,1399 5/5/2020 Ac-228 6.80 +/- 0.31 6.77 +/- 0.27 6.79 +/- 0.21 Pass SW-1461,1462 5/7/2020 H-3 315 +/- 88 320 +/- 89 317 +/- 63 Pass AP-1610,1611 5/14/2020 Be-7 0.179 +/- 0.101 0.172 +/- 0.086 0.176 +/- 0.066 Pass DW-20062,20063 5/19/2020 Gr. Alpha 6.20 +/- 1.30 5.00 +/- 1.30 5.60 +/- 0.92 Pass DW-20062,20063 5/19/2020 Gr. Beta 6.09 +/- 0.77 5.51 +/- 0.72 5.80 +/- 0.53 Pass W-1805,1806 5/25/2020 Ra-226 0.42 +/- 0.16 0.24 +/- 0.17 0.33 +/- 0.12 Pass F-1763,1764 5/26/2020 K-40 2.82 +/- 0.47 3.01 +/- 0.45 2.92 +/- 0.33 Pass AP-052620A,B 5/26/2020 Gr. Beta 0.014 +/- 0.003 0.016 +/- 0.003 0.015 +/- 0.002 Pass DW-20066,20067 6/1/2020 Ra-226 0.21 +/- 0.09 0.33 +/- 0.12 0.27 +/- 0.08 Pass DW-20066,20067 6/1/2020 Ra-228 0.05 +/- 0.43 0.03 +/- 0.39 0.04 +/- 0.29 Pass P-1849,1850 6/1/2020 H-3 547 +/- 102 700 +/- 108 624 +/- 74 Pass AP-1893,1894 6/4/2020 Be-7 0.164 +/- 0.080 0.251 +/- 0.140 0.208 +/- 0.081 Pass SW-1872,1873 6/4/2020 H-3 385 +/- 94 400 +/- 95 393 +/- 67 Pass AP-052620A,B 6/8/2020 Gr. Beta 0.024 +/- 0.004 0.025 +/- 0.005 0.024 +/- 0.003 Pass WW-2025,2026 6/16/2020 H-3 318 +/- 92 320 +/- 92 319 +/- 65 Pass AP-061620A,B 6/16/2020 Gr. Beta 0.017 +/- 0.003 0.019 +/- 0.003 0.018 +/- 0.002 Pass DW-20078,20079 6/17/2020 Ra-226 0.53 +/- 0.11 0.50 +/- 0.10 0.52 +/- 0.07 Pass DW-20078,20079 6/17/2020 Ra-228 1.10 +/- 0.50 1.11 +/- 0.50 1.11 +/- 0.35 Pass AP-2048,2049 6/18/2020 Be-7 0.222 +/- 0.087 0.221 +/- 0.092 0.221 +/- 0.063 Pass SW-2157,2158 6/23/2020 H-3 175 +/- 86 235 +/- 89 205 +/- 62 Pass AP-062320A,B 6/23/2020 Gr. Beta 0.021 +/- 0.003 0.023 +/- 0.004 0.022 +/- 0.003 Pass AP-2136,2137 6/25/2020 Be-7 0.242 +/- 0.099 0.343 +/- 0.115 0.292 +/- 0.076 Pass AP-2366,2367 6/30/2020 Be-7 0.144 +/- 0.018 0.177 +/- 0.019 0.161 +/- 0.013 Pass SWU-2180,2181 6/30/2020 H-3 105 +/- 82 199 +/- 87 152 +/- 60 Pass AP-2473,2474 7/1/2020 Be-7 0.079 +/- 0.011 0.089 +/- 0.012 0.084 +/- 0.008 Pass AP-2473,2474 7/1/2020 K-40 0.010 +/- 0.006 0.015 +/- 0.009 0.013 +/- 0.005 Pass AP-2408,2409 7/2/2020 Be-7 0.084 +/- 0.016 0.085 +/- 0.014 0.085 +/- 0.011 Pass P-2264,2265 7/6/2020 H-3 149 +/- 83 144 +/- 83 147 +/- 59 Pass DW-20091,20092 7/10/2020 Ra-226 0.77 +/- 0.17 0.69 +/- 0.24 0.73 +/- 0.15 Pass DW-20091,20092 7/10/2020 Ra-228 0.61 +/- 0.56 0.59 +/- 0.55 0.60 +/- 0.39 Pass SW-2450,2451 7/14/2020 H-3 410 +/- 96 487 +/- 99 448 +/- 69 Pass VE-2494,2495 7/16/2020 K-40 1.68 +/- 0.25 2.08 +/- 0.26 1.88 +/- 0.18 Pass DW-20102,20103 7/17/2020 Gr. Alpha 1.98 +/- 0.82 2.65 +/- 0.82 2.32 +/- 0.58 Pass DW-20102,20103 7/17/2020 Ra-226 0.84 +/- 0.20 0.89 +/- 0.20 0.87 +/- 0.14 Pass DW-20102,20103 7/17/2020 Ra-228 1.24 +/- 0.67 1.57 +/- 0.70 1.41 +/- 0.48 Pass WW-2604,2605 7/20/2020 H-3 35,989 +/- 576 36,039 +/- 577 36,014 +/- 408 Pass SWU-2669,2670 7/28/2020 H-3 103 +/- 80 101 +/- 80 102 +/- 57 Pass SWU-2669,2670 7/28/2020 Gr. Beta 1.49 +/- 0.56 1.05 +/- 0.51 1.27 +/- 0.38 Pass S-2711,2712 7/29/2020 K-40 17.4 +/- 0.9 19.6 +/- 1.0 18.5 +/- 0.7 Pass Concentrationa Averaged First Result Second Result Result

A-14 TABLE A-6. Intralaboratory "Duplicate" Samples Lab Codeb Date Analysis Acceptance WW-2799,2800 8/4/2020 H-3 471 +/- 100 437 +/- 99 454 +/- 70 Pass WW-2933,2934 8/4/2020 H-3 316 +/- 91 300 +/- 90 308 +/- 64 Pass S-2774,2775 8/4/2020 K-40 5.9 +/- 0.9 6.1 +/- 0.8 6.0 +/- 0.6 Pass WW-2912,2913 8/5/2020 H-3 176 +/- 84 226 +/- 87 201 +/- 60 Pass F-3040,3041 8/7/2020 Gr. Beta 4.55 +/- 0.12 4.63 +/- 0.12 4.59 +/- 0.09 Pass F-3040,3041 8/7/2020 K-40 3.58 +/- 0.42 3.32 +/- 0.41 3.45 +/- 0.29 Pass WW-2867,2868 8/12/2020 H-3 169 +/- 85 219 +/- 86 194 +/- 61 Pass VE-2842,2843 8/12/2020 K-40 3.18 +/- 0.30 3.14 +/- 0.37 3.16 +/- 0.24 Pass F-2891,2892 8/14/2020 K-40 2.98 +/- 0.39 2.82 +/- 0.35 2.90 +/- 0.26 Pass VE-2954,2955 8/20/2020 Be-7 0.222 +/- 0.106 0.283 +/- 0.166 0.252 +/- 0.099 Pass VE-2954,2955 8/20/2020 K-40 4.09 +/- 0.37 3.75 +/- 0.38 3.92 +/- 0.27 Pass DW-20126,20127 8/25/2020 Ra-226 0.90 +/- 0.14 0.73 +/- 0.12 0.82 +/- 0.09 Pass DW-20126,20127 8/25/2020 Ra-228 1.55 +/- 0.52 2.30 +/- 0.58 1.93 +/- 0.39 Pass LW-3154,3155 8/26/2020 Gr. Beta 1.43 +/- 0.60 1.33 +/- 0.55 1.38 +/- 0.41 Pass VE-3084,3085 8/28/2020 Be-7 0.52 +/- 0.12 0.48 +/- 0.07 0.50 +/- 0.07 Pass VE-3084,3085 8/28/2020 K-40 3.87 +/- 0.16 3.36 +/- 0.31 3.62 +/- 0.17 Pass SWU-3133,3134 9/1/2020 H-3 107 +/- 84 116 +/- 84 111 +/- 59 Pass VE-3208,3209 9/8/2020 K-40 5.99 +/- 0.43 5.85 +/- 0.35 5.92 +/- 0.28 Pass VE-3187,3188 9/8/2020 Be-7 0.50 +/- 0.17 0.61 +/- 0.23 0.55 +/- 0.14 Pass VE-3187,3188 9/8/2020 K-40 4.64 +/- 0.54 4.97 +/- 0.45 4.81 +/- 0.35 Pass WW-3427,3428 9/10/2020 H-3 2,321 +/- 163 2,323 +/- 164 2,322 +/- 116 Pass DW-21033,21034 9/14/2020 Gr. Alpha 1.27 +/- 0.79 0.94 +/- 0.75 1.11 +/- 0.54 Pass DW-21033,21034 9/14/2020 Gr. Beta 1.02 +/- 0.60 1.01 +/- 0.59 1.02 +/- 0.42 Pass SG-3265,3266 9/14/2020 Pb-214 11.8 +/- 0.49 10.4 +/- 0.57 11.1 +/- 0.38 Pass SG-3265,3266 9/14/2020 Ac-228 18.8 +/- 1.27 17.3 +/- 1.36 18.0 +/- 0.93 Pass SG-3265,3266 9/14/2020 Gr. Alpha 28.0 +/- 4.6 33.5 +/- 4.9 30.8 +/- 3.4 Pass SG-3265,3266 9/14/2020 Gr. Beta 42.1 +/- 2.8 44.5 +/- 3.0 43.3 +/- 2.1 Pass VE-3315,3316 9/15/2020 Be-7 0.25 +/- 0.10 0.28 +/- 0.16 0.27 +/- 0.09 Pass VE-3315,3316 9/15/2020 K-40 5.48 +/- 0.34 5.16 +/- 0.36 5.32 +/- 0.25 Pass WW-3339,3340 9/16/2020 H-3 196 +/- 85 199 +/- 85 198 +/- 60 Pass CF-3381,3382 9/21/2020 Be-7 0.20 +/- 0.10 0.19 +/- 0.11 0.20 +/- 0.07 Pass CF-3381,3382 9/21/2020 K-40 5.94 +/- 0.30 5.72 +/- 0.29 5.83 +/- 0.21 Pass AP-092120A,B 9/21/2020 Gr. Beta 0.043 +/- 0.005 0.041 +/- 0.005 0.042 +/- 0.004 Pass F-3706,3707 9/26/2020 K-40 1.86 +/- 0.35 1.83 +/- 0.39 1.84 +/- 0.26 Pass AP-092820A,B 9/28/2020 Gr. Beta 0.021 +/- 0.004 0.023 +/- 0.004 0.022 +/- 0.003 Pass XW-3620,3621 9/30/2020 Sr-89 11,760 +/- 140 12,487 +/- 133 12,124 +/- 97 Pass XW-3620,3621 9/30/2020 Sr-90 2,287 +/- 45 2,831 +/- 50 2,559 +/- 34 Pass XW-3620,3621 9/30/2020 Fe-55 1,623 +/- 462 1,833 +/- 474 1,728 +/- 331 Pass Concentrationa Averaged First Result Second Result Result

A-15 TABLE A-6. Intralaboratory "Duplicate" Samples Lab Codeb Date Analysis Acceptance SW-3515,3516 10/1/2020 H-3 154 +/- 86 111 +/- 84 133 +/- 60 Pass DW-20141,20142 10/1/2020 Ra-226 1.34 +/- 0.16 1.39 +/- 0.16 1.37 +/- 0.11 Pass DW-20141,20142 10/1/2020 Ra-228 1.74 +/- 0.62 2.09 +/- 0.64 1.92 +/- 0.45 Pass SW-3536,3537 10/5/2020 H-3 376 +/- 97 378 +/- 97 377 +/- 68 Pass WW-3727,3728 10/8/2020 H-3 152 +/- 82 190 +/- 84 171 +/- 59 Pass VE-3748,3749 10/12/2020 K-40 3.07 +/- 0.25 2.88 +/- 0.26 2.98 +/- 0.18 Pass VE-3769,3770 10/12/2020 Be-7 0.80 +/- 0.31 0.51 +/- 0.15 0.66 +/- 0.17 Pass VE-3769,3770 10/12/2020 K-40 5.69 +/- 0.61 5.79 +/- 0.39 5.74 +/- 0.36 Pass WW-4092,4093 10/13/2020 H-3 6,484 +/- 252 6,275 +/- 248 6,380 +/- 177 Pass WW-3838,3839 10/14/2020 H-3 313 +/- 90 263 +/- 88 288 +/- 63 Pass WW-4394,4395 11/3/2020 H-3 161 +/- 83 199 +/- 85 180 +/- 60 Pass WW-4587,4588 11/4/2020 H-3 6,468 +/- 252 6,638 +/- 255 6,553 +/- 179 Pass WW-4524,4525 11/5/2020 H-3 160 +/- 86 131 +/- 84 145 +/- 60 Pass VE-4415,4416 11/24/2020 Be-7 0.28 +/- 0.08 0.22 +/- 0.07 0.25 +/- 0.05 Pass VE-4415,4416 11/24/2020 K-40 2.25 +/- 0.21 2.20 +/- 0.19 2.23 +/- 0.14 Pass AP-4845,4846 12/31/2020 Be-7 0.07 +/- 0.01 0.06 +/- 0.02 0.06 +/- 0.01 Pass Note: Duplicate analyses are performed on every twentieth sample received. Results are not listed for those analyses with activities that measure below the LLD.

a Results are reported in units of pCi/L, except for air filters (pCi/Filter or pCi/m3), food products, vegetation, soil and sediment (pCi/g).

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

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

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

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

Concentrationa Averaged First Result Second Result Result

A-16 TABLE A-7. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Reference Known Lab Code b Date Analysis Activity Acceptance MAAP-664 2/1/2020 Gross Alpha 2.26 +/- 0.14 1.24 0.37 - 2.11 Fail d MAAP-664 2/1/2020 Gross Beta 2.40 +/- 0.07 2.00 1.00 - 3.00 Pass MAW-536 2/1/2020 Gross Alpha 0.86 +/- 0.06 1.03 0.31 - 1.75 Pass MAW-536 2/1/2020 Gross Beta 3.79 +/- 0.07 4.24 2.12 - 6.36 Pass MASO-662 2/1/2020 Cs-134 955 +/- 9 1114 780 - 1448 Pass MASO-662 2/1/2020 Cs-137 1089 +/- 12 1020 714 - 1326 Pass MASO-662 2/1/2020 Co-57 1106 +/- 8 1071 750 - 1392 Pass MASO-662 2/1/2020 Co-60 0.33 +/- 1.26 0

NA c Pass MASO-662 2/1/2020 Mn-54 1022 +/- 27 945 662 - 1229 Pass MASO-662 2/1/2020 Zn-65 842 +/- 17 751 526 - 976 Pass MASO-662 2/1/2020 K-40 710 +/- 42 625 438 - 813 Pass MAW-534 2/1/2020 I-129 0.81 +/- 0.09 1.001 0.701 - 1.301 Pass MAW-599 2/1/2020 H-3 202 +/- 9 196 137 - 255 Pass MAW-599 2/1/2020 Am-241 0.41 +/- 0.09 0.547 0.383 - 0.711 Pass MAW-599 2/1/2020 Cs-134 16.1 +/- 0.3 18.5 13.0 - 24.1 Pass MAW-599 2/1/2020 Cs-137 11.5 +/- 0.4 11.3 7.9 - 14.7 Pass MAW-599 2/1/2020 Co-57 20.0 +/- 0.30 19.7 13.8 - 25.6 Pass MAW-599 2/1/2020 Co-60 10.6 +/- 0.2 10.6 7.4 - 13.8 Pass MAW-599 2/1/2020 Mn-54 20.5 +/- 0.4 19.6 13.7 - 25.5 Pass MAW-599 2/1/2020 Zn-65 24.1 +/- 0.70 22.2 15.5 - 28.9 Pass MAW-599 2/1/2020 K-40 0.57 +/- 1.54 0

NA c Pass MAW-599 2/1/2020 Fe-55 13.3 +/- 12.2 17.8 12.5 - 23.1 Pass MAW-599 2/1/2020 Ni-63 9.72 +/- 0.43 11.1 7.8 - 14.4 Pass MAW-599 2/1/2020 Sr-90 0.07 +/- 0.18 0

NA c Pass MAW-599 2/1/2020 Tc-99 3.41 +/- 0.31 3.63 2.54 - 4.72 Pass MAW-599 2/1/2020 Ra-226 0.56 +/- 0.06 0.365 0.256 - 0.475 Fail e MAW-599 2/1/2020 Pu-238 0.69 +/- 0.08 0.94 0.66 - 1.22 Pass MAW-599 2/1/2020 Pu-239/240 0.48 +/- 0.07 0.737 0.516 - 0.958 Fail f MAW-599 2/1/2020 U-234 1.04 +/- 0.08 0.97 0.68 - 1.26 Pass MAW-599 2/1/2020 U-238 1.02 +/- 0.08 0.95 0.67 - 1.24 Pass Concentrationa Control Laboratory result Limits c

A-17 TABLE A-7. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Reference Known Lab Code b Date Analysis Activity Acceptance MAVE-668 2/1/2020 Cs-134 3.51 +/- 0.22 3.82 2.67 - 4.97 Pass MAVE-668 2/1/2020 Cs-137 3.04 +/- 0.18 2.77 1.94 - 3.60 Pass MAVE-668 2/1/2020 Co-57 0.02 +/- 0.03 0

NA c Pass MAVE-668 2/1/2020 Co-60 2.92 +/- 0.08 2.79 1.95 - 3.63 Pass MAVE-668 2/1/2020 Mn-54 5.16 +/- 0.14 4.58 3.21 - 5.95 Pass MAVE-668 2/1/2020 Zn-65 4.36 +/- 0.16 3.79 2.65 - 4.93 Pass MAW-689 2/1/2020 Ra-226 172 +/- 1 189 132 - 246 Pass MAW-689 2/1/2020 Ra-228 65 +/- 1 75 53 - 98 Pass MAAP-3181 8/1/2020 Gross Alpha 0.45 +/- 0.06 0.528 0.158 - 0.898 Pass MAAP-3181 8/1/2020 Gross Beta 0.97 +/- 0.04 0.915 0.458 - 1.373 Pass MADW-3101 8/1/2020 Gross Alpha 0.57 +/- 0.04 0.62 0.19 - 1.05 Pass MADW-3101 8/1/2020 Gross Beta 0.75 +/- 0.04 0.83 0.42 - 1.25 Pass MASO-3179 8/1/2020 Cs-134 599 +/- 7 710 497 - 923 Pass MASO-3179 8/1/2020 Cs-137 3.33 +/- 4.81 0

NA c Pass MASO-3179 8/1/2020 Co-57 1145 +/- 8 1100 770 - 1430 Pass MASO-3179 8/1/2020 Co-60 965 +/- 9 1000 700 - 1300 Pass MASO-3179 8/1/2020 Mn-54 651 +/- 11 610 427 - 793 Pass MASO-3179 8/1/2020 Zn-65 524 +/- 14 470 329 - 611 Pass MASO-3179 8/1/2020 K-40 684 +/- 58 622 435 - 809 Pass MAW-3175 8/1/2020 Cs-134 13.9 +/- 0.3 15.2 10.6 - 19.8 Pass MAW-3175 8/1/2020 Cs-137 15.4 +/- 0.4 14.3 10.0 - 18.6 Pass MAW-3175 8/1/2020 Co-57 0.10 +/- 0.16 0

NA c Pass MAW-3175 8/1/2020 Co-60 12.5 +/- 0.3 12.2 8.5 - 15.9 Pass MAW-3175 8/1/2020 Mn-54 0.07 +/- 0.17 0

NA c Pass MAW-3175 8/1/2020 Zn-65 18.3 +/- 0.6 16.9 11.8 - 22.0 Pass MAW-3175 8/1/2020 K-40 1.06 +/- 1.65 0

NA c Pass Concentrationa Control Laboratory result Limits c

A-18 TABLE A-7. Department of Energy's Mixed Analyte Performance Evaluation Program (MAPEP).

Reference Known Lab Code b Date Analysis Activity Acceptance MAAP-3177 8/1/2020 Cs-134 1.28 +/- 0.05 1.83 1.28 - 2.38 Failg MAAP-3177 8/1/2020 Cs-137 0.981 +/- 0.068 0.996 0.697 - 1.295 Pass MAAP-3177 8/1/2020 Co-57 0.020 +/- 0.027 0

NA c Pass MAAP-3177 8/1/2020 Co-60 1.57 +/- 0.06 1.73 1.21 - 2.25 Pass MAAP-3177 8/1/2020 Mn-54 0.751 +/- 0.077 1.400 0.98 - 1.82 Failh MAAP-3177 8/1/2020 Zn-65 2.07 +/- 0.15 2.00 1.40 - 2.60 Pass MAVE-3185 8/1/2020 Cs-134 4.73 +/- 0.10 4.94 3.46 - 6.42 Pass MAVE-3185 8/1/2020 Cs-137 0.03 +/- 0.06 0

NA c Pass MAVE-3185 8/1/2020 Co-57 7.83 +/- 0.12 6.67 4.67 - 8.67 Pass MAVE-3185 8/1/2020 Co-60 4.41 +/- 0.10 4.13 2.89 - 5.37 Pass MAVE-3185 8/1/2020 Mn-54 6.52 +/- 0.18 5.84 4.09 - 7.59 Pass MAVE-3185 8/1/2020 Zn-65 7.26 +/- 0.19 6.38 4.47 - 8.29 Pass a Results are reported in units of Bq/kg (soil), Bq/L (water) or Bq/total sample (filters, vegetation).

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

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

d The lab utilized a MAPEP specific gross alpha/beta filter calibration as discussed in the MAPEP test instructions for MAAP-664.

Using the MAPEP specific calibration for MAAP-664 caused the bias to shift from low to high.

The subsequent MAPEP study result was acceptable. See Lab code MAAP-3101 (reference date 8/1/2020).

e An investigation of the Radium-226 failure was inconclusive. Subsequent Ra-226 PT analyses were satisfactory.

See ERA RAD-121 and RAD-122 studies Table A-1 and NY ELAP shipment 437R Table A-2.

f Analysis was repeated in duplicate with acceptable results: Pu-238 (0.97 & 1.10 Bq/Kg);

Pu-239 (0.83 & 0.83 Bq/Kg). The cause of the failure could not be determined.

g Analysis was run in duplicate. Results were (1.18 Bq/sample and 1.37 Bq/sample). The submitted result was the mean of the two results (1.28 +/- 0.05 Bq/sample).

h A data transcription error resulted in an erroneous reported value. The actual result (1.36 +/- 0.08 Bq/L) passes.

Concentrationa Control Laboratory result Limits c

A-19 TABLE A-8. Interlaboratory Comparison Crosscheck Program, Environmental Resource Associates (ERA)a.

MRAD-30 Study Lab Code b Date Analysis ERA Value c Acceptance ERAP-769 3/16/2020 Am-241 71.0 74.7 53.3 - 99.6 Pass ERAP-769 3/16/2020 Cs-134 1210 1390 902 - 1700 Pass ERAP-769 3/16/2020 Cs-137 393 351 288 - 460 Pass ERAP-769 3/16/2020 Co-60 450.0 422.0 359.0 - 536 Pass ERAP-769 3/16/2020 Fe-55 1200 1260 460 - 2010 Pass ERAP-769 3/16/2020 Mn-54

< 2.4

< 50.0 0.00 - 50.0 Pass ERAP-769 3/16/2020 Zn-65 856 694 569 - 1060 Pass ERAP-769 3/16/2020 Pu-238 31.4 28.0 21.1 - 34.4 Pass ERAP-769 3/16/2020 Pu-239 43.9 40.1 30.0 - 48.4 Pass ERAP-769 3/16/2020 Sr-90 190 175 111 - 238 Pass ERAP-769 3/16/2020 U-234 56.7 56.2 41.7 - 65.9 Pass ERAP-769 3/16/2020 U-238 57.0 55.7 42.1 - 66.5 Pass ERAP-771 3/16/2020 Gross Alpha 33.4 29.3 15.3 - 48.3 Pass ERAP-771 3/16/2020 Gross Beta 68.3 66.4 40.3 - 100 Pass a 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 (QAP)

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

Concentration a Laboratory Control Result Limits d

A Environmental, Inc.

1$

I I Midwest Laboratory 700 Landwehr Road

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

fax (847) 564-4577 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 = 2 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 4.66 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 x2 +/- s2 Reported result: x +/- s; where x = (1/2) (x1 + x2) and s = (1/2) 2 2

2 1

s s

3.2.

Individual results:

< L1, < L2 Reported result: < L, where L = lower of L1 and L2 3.3.

Individual results:

x +/- s, < L 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 example, 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:

x = 1 n x s =

(x-x )2 n-1 4.2 Values below the highest lower limit of detection are not included in the average.

4.3 If 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 In rounding off, the following rules are followed:

4.5.1. If the number following those to be retained is less than 5, the number is 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

Appendix C. NON-RADIOLOGICAL MONITORING PROGRAM 1.0. Introduction Union Electric Company Callaway Plant, d.b.a. Ameren Missouri Callaway Energy Center, in accordance with federal regulations and a desire to maintain the quality of the local environment around Callaway Plant has implemented an Environmental Protection Plan, (EPP) contained in Appendix B of the Callaway Plant Operating License.

The objective of the EPP is to provide for protection of non-radiological environmental values during operation of the Callaway Plant.

This report describes the conduct of the EPP for the Callaway Plant during 2020.

2.0. Unusual or Important Events No unusual or important events reportable under the EPP Section 4.1 were identified during 2020.

3.0. EPP Non-compliances During 2020, there was one non-compliance with the EPP.

Data used to calculate the Total Dissolved Solids (TDS) value for the February 24, 2020 Cooling CTBD) sample was entered incorrectly in the computer program which resulted in missing a sample required by Callaway's National Pollutant Discharge Elimination System (NPDES) permit. The error was discovered while reviewing data for the monthly NPDES Discharge Monitoring Report (DMR). Based on this the sample results were invalidated. When the analytical error was discovered, February had already ended which means there was no chance to resample. Therefore this was reported to the Missouri Department of Natural Resources as a missed sample.

Callaway's NPDES permit classifies the missed sample as an "Other Non-Compliance" According to the "Standard Conditions for NPDES Permits Issued by the Missouri Department of Natural Resources Missouri Clean Water Commission, Revised August 1, 2014, Part 1, Section B, Item 5. Based on this, a note was added to the February 2020 Discharge Monitoring Report explaining the missing sample. This is the only reporting required.

4.0. Nonroutine Reports There were no nonroutine reports submitted in accordance with the EPP, Section 5.4.2 in 2017.

C-1

5.0. Plant Design and Operation Environmental Evaluations.

This section lists all changes in the plant design, operation, tests or experiments installed during 2020, which could have involved a potentially significant unreviewed environmental question in accordance with section 3.1 of Appendix B.

During 2020, no major plant changes were completed that could have involved a potentially significant unreviewed environmental question.

C-2

D-1 APPENDIX D Sampling Location Maps

Figure D-1. Radiological Environmental Sampling Locations 1, 2, 3, mile radius from site location.

D-2

Figure D-2. Radiological Environmental Sampling Locations 3, 4, 5, 6 mile radius from site location.

D-3

Figure D-3. Radiological Environmental Sampling Locations 5, 10, 15 mile radius from site location.

IL D-4

Figure D-4. Non-Potable Groundwater Monitoring Wells, 600 ft radius from Site.

I RadIoIoicaI Environmental Sampling Locations AmBi8ll Callaway 600 ft radius from Site location MISSOURI Energy Center Non-Potable Groundwater Wells Collection N

0 100 200 Ft D-5

Figure D-5. Non-Potable Groundwater Monitoring Wells Collection.

D-6

AI1 Environmental, Inc.

I Midwest Laboratory 700 Landwehr Road

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

fax (847) 564-45 I 7 AMEREN MISSOURI, CALLAWAY ENERGY CENTER FULTON, MISSOURI Docket Numbers 50-483 and 72-1045 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT to THE UNITED STATES NUCLEAR REGULATORY COMMISSION Part II DATA TABULATIONS AND ANALYSES January 1 to December 31, 2020 Prepared by ENVIRONMENTAL, Inc.

Midwest Laboratory Submitted by Union Electric Co.

dba Ameren Missouri Project No. 8036 Approved:

Ashok Banavali,Ph.D.

Laboratory Manager

ii TABLE OF CONTENTS Section Page List of Tables............................................................................................................... iii 1.0 Introduction................................................................................................................... iv 2.0 Data Tables................................................................................................................... v

iii LIST OF TABLES No.

Title Page 1

Airborne particulates and charcoal cartridges, analysis for gamma-emitting isotopes, and iodine-131....................................................................................... 1-1 2

Milk, analysis for iodine-131 and gamma emitting isotopes................................................ 2-1 3

Vegetation, analysis for iodine-131 and gamma emitting isotopes..................................... 3-1 4

Non-food Crops, analysis for tritium and gamma emitting isotopes.................................... 4-1 5

Soil, analysis for gamma-emitting isotopes......................................................................... 5-1 6

Surface water, analysis for tritium and gamma-emitting isotopes....................................... 6-1 7

Surface water (Ponds), analysis for tritium and gamma-emitting isotopes......................... 7-1 8

Drinking water, analysis for tritium and gamma-emitting isotopes...................................... 8-1 9

Wells (non-potable water), analysis for tritium and gamma-emitting isotopes.................... 9-1 10 Sediment 10a.

Bottom sediment, analysis for gamma-emitting isotopes.................................................. 10-1 10b.

Shoreline sediment, analysis for gamma-emitting isotopes.............................................. 10-2 11 Fish, analysis for gamma-emitting isotopes...................................................................... 11-1 12 Direct Radiation 12a.

Gamma dose.................................................................................................................... 12-1 12b.

Neutron dose.................................................................................................................... 12-2

iv

1.0 INTRODUCTION

The following constitutes a supplement to the Annual Report for the Radiological Environmental Monitoring Program conducted at the Ameren Missouri, Callaway Energy Center, Fulton, Missouri in 2020. Results of completed analyses are presented in the attached tables.

For information regarding sampling locations, type and frequency of collection, and sample codes, refer to Part I, Tables 5.1 - 5.2 and the figures in Appendix D.

Analyses results from additional sampling may be found in Appendix A.

v 2.0 DATA TABLES

1-1 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

01-09-20 265

< 0.14

< 0.007

< 0.011

< 0.012

< 0.011

< 0.031

< 0.048 01-16-20 264

< 0.10

< 0.008

< 0.005

< 0.013

< 0.008

< 0.009

< 0.011

< 0.052 01-22-20 236

< 0.12

< 0.006

< 0.004

< 0.011

< 0.009

< 0.008

< 0.027

< 0.055 01-30-20 302

< 0.07

< 0.007

< 0.005

< 0.011

< 0.009

< 0.008

< 0.005

< 0.054 02-06-20 267 0.20 +/- 0.12

< 0.007

< 0.004

< 0.015

< 0.011

< 0.008

< 0.026

< 0.043 02-13-20 269

< 0.12

< 0.013

< 0.005

< 0.020

< 0.015

< 0.009

< 0.025

< 0.063 02-20-20 268

< 0.15

< 0.013

< 0.009

< 0.029

< 0.017

< 0.018

< 0.012

< 0.057 02-27-20 271

< 0.13

< 0.008

< 0.005

< 0.015

< 0.014

< 0.010

< 0.027

< 0.070 03-05-20 266

< 0.15

< 0.013

< 0.016

< 0.015

< 0.013

< 0.025

< 0.065 03-12-20 267 0.33 +/- 0.15

< 0.016

< 0.020

< 0.015

< 0.019

< 0.055 03-19-20 271

< 0.07

< 0.006

< 0.018

< 0.010

< 0.008

< 0.013

< 0.042 03-26-20 264

< 0.11

< 0.004

< 0.008

< 0.011

< 0.010

< 0.008

< 0.009

< 0.038 04-02-20 262 0.23 +/- 0.11

< 0.011

< 0.019

< 0.020

< 0.015

< 0.013

< 0.012

< 0.055 04-09-20 256

< 0.12

< 0.014

< 0.018

< 0.015

< 0.017

< 0.012

< 0.015

< 0.064 04-16-20 253 0.22 +/- 0.12

< 0.007

< 0.020

< 0.010

< 0.009

< 0.010

< 0.061 04-23-20 257

< 0.13

< 0.011

< 0.010

< 0.027

< 0.014

< 0.015

< 0.021

< 0.072 04-30-20 251 0.17 +/- 0.08

< 0.010

< 0.005

< 0.012

< 0.011

< 0.006

< 0.011

< 0.060 05-07-20 256 0.24 +/- 0.14

< 0.012

< 0.004

< 0.023

< 0.014

< 0.008

< 0.046

< 0.045 05-14-20 253

< 0.11

< 0.010

< 0.006

< 0.015

< 0.009

< 0.011

< 0.021

< 0.035 05-21-20 254

< 0.11

< 0.014

< 0.008

< 0.022

< 0.011

< 0.006

< 0.017

< 0.053 05-27-20 236

< 0.12

< 0.009

< 0.004

< 0.017

< 0.013

< 0.012

< 0.019

< 0.063 06-04-20 326

< 0.09

< 0.010

< 0.006

< 0.013

< 0.011

< 0.009

< 0.014

< 0.053 06-11-20 281

< 0.11

< 0.006

< 0.004

< 0.012

< 0.009

< 0.005

< 0.014

< 0.041 06-18-20 295 0.29 +/- 0.10

< 0.005

< 0.010

< 0.012

< 0.009

< 0.005

< 0.014

< 0.050 06-25-20 280 0.21 +/- 0.09

< 0.005

< 0.010

< 0.017

< 0.011

< 0.007

< 0.014

< 0.041 07-02-20 273 0.21 +/- 0.09

< 0.009

< 0.012

< 0.018

< 0.010

< 0.005

< 0.011

< 0.056 07-09-20 281 0.26 +/- 0.11

< 0.005

< 0.012

< 0.008

< 0.007

< 0.025

< 0.060 07-16-20 293 0.28 +/- 0.10

< 0.007

< 0.009

< 0.010

< 0.009

< 0.007

< 0.020

< 0.029 07-23-20 273

< 0.14

< 0.011

< 0.013

< 0.022

< 0.011

< 0.010

< 0.052

< 0.055 07-29-20 241 0.26 +/- 0.14

< 0.007

< 0.011

< 0.016

< 0.012

< 0.010

< 0.024

< 0.059 08-06-20 324

< 0.13

< 0.015

< 0.008

< 0.023

< 0.012

< 0.014

< 0.021

< 0.054 08-13-20 298 0.21 +/- 0.12

< 0.009

< 0.010

< 0.014

< 0.044 08-20-20 285 0.17 +/- 0.10

< 0.010

< 0.009

< 0.019

< 0.012

< 0.011

< 0.016

< 0.030 08-27-20 269 0.26 +/- 0.13

< 0.008

< 0.010

< 0.020

< 0.009

< 0.007

< 0.015

< 0.042 09-03-20 285

< 0.13

< 0.006

< 0.007

< 0.015

< 0.009

< 0.012

< 0.037 09-10-20 279b 0.15 +/- 0.08

< 0.011

< 0.010

< 0.007

< 0.010

< 0.009

< 0.022

< 0.046 09-17-20 290 0.27 +/- 0.10

< 0.011

< 0.008

< 0.020

< 0.011

< 0.006

< 0.016

< 0.027 09-24-20 288 0.30 +/- 0.12

< 0.012

< 0.009

< 0.010

< 0.009

< 0.017

< 0.035 10-01-20 289 0.28 +/- 0.11

< 0.006

< 0.009

< 0.015

< 0.009

< 0.010

< 0.012

< 0.043 10-08-20 291

< 0.12

< 0.010

< 0.014

< 0.017

< 0.013

< 0.008

< 0.014

< 0.049 10-15-20 287

< 0.14

< 0.009

< 0.021

< 0.010

< 0.031

< 0.032 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

b 2.5 hrs loss of flow. This missing sample time would not have impacted the sample negatively (CR#202004554).

CA-A-001 Required LLDs 7Be

1-2 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

10-22-20 299

< 0.13

< 0.011

< 0.018

< 0.012

< 0.011

< 0.034

< 0.050 10-29-20 295

< 0.08

< 0.011

< 0.009

< 0.010

< 0.007

< 0.015

< 0.054 11-05-20 301

< 0.12

< 0.015

< 0.011

< 0.018

< 0.011

< 0.006

< 0.014

< 0.040 11-12-20 288 0.20 +/- 0.11

< 0.011

< 0.019

< 0.018

< 0.020

< 0.011

< 0.031

< 0.075 11-19-20 297

< 0.16

< 0.015

< 0.010

< 0.017

< 0.014

< 0.013

< 0.045

< 0.062 11-25-20 250 0.20 +/- 0.11

< 0.014

< 0.009

< 0.023

< 0.011

< 0.023

< 0.064 12-03-20 343

< 0.11

< 0.012

< 0.007

< 0.017

< 0.011

< 0.006

< 0.019

< 0.030 12-10-20 295

< 0.12

< 0.007

< 0.008

< 0.019

< 0.010

< 0.011

< 0.063 12-17-20 297

< 0.09

< 0.008

< 0.019

< 0.012

< 0.008

< 0.016

< 0.052 12-23-20 245

< 0.14

< 0.019

< 0.021

< 0.032

< 0.020

< 0.057

< 0.076 12-30-20 291

< 0.12

< 0.012

< 0.010

< 0.017

< 0.015

< 0.008

< 0.023

< 0.062 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

CA-A-001 (cont.)

7Be Required LLDs

1-3 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

01-09-20 284

< 0.12

< 0.006

< 0.005

< 0.010

< 0.011

< 0.046

< 0.039 01-16-20 287 0.15 +/- 0.08

< 0.005

< 0.003

< 0.011

< 0.009

< 0.008

< 0.007

< 0.027 01-22-20 250

< 0.13

< 0.011

< 0.006

< 0.017

< 0.012

< 0.006

< 0.032

< 0.058 01-30-20 324

< 0.10

< 0.005

< 0.013

< 0.020

< 0.012

< 0.007

< 0.019

< 0.038 02-06-20 285

< 0.09

< 0.006

< 0.005

< 0.016

< 0.010

< 0.006

< 0.023

< 0.040 02-13-20 284

< 0.11

< 0.008

< 0.018

< 0.011

< 0.006

< 0.022

< 0.045 02-20-20 282

< 0.13

< 0.010

< 0.008

< 0.014

< 0.010

< 0.027

< 0.060 02-27-20 278

< 0.15

< 0.014

< 0.017

< 0.026

< 0.019

< 0.012

< 0.031

< 0.072 03-05-20 271

< 0.11

< 0.011

< 0.016

< 0.020

< 0.014

< 0.009

< 0.017

< 0.060 03-12-20 283

< 0.12

< 0.009

< 0.013

< 0.015

< 0.013

< 0.012

< 0.016

< 0.070 03-19-20 288

< 0.09

< 0.007

< 0.008

< 0.010

< 0.008

< 0.011

< 0.051 03-26-20 282

< 0.11

< 0.006

< 0.008

< 0.022

< 0.013

< 0.012

< 0.011

< 0.045 04-02-20 277

< 0.10

< 0.008

< 0.006

< 0.018

< 0.010

< 0.013

< 0.047 04-09-20 286

< 0.11

< 0.010

< 0.015

< 0.010

< 0.005

< 0.036 04-16-20 281 0.20 +/- 0.09

< 0.006

< 0.008

< 0.015

< 0.009

< 0.010

< 0.042 04-23-20 284

< 0.10

< 0.006

< 0.008

< 0.011

< 0.010

< 0.008

< 0.013

< 0.053 04-30-20 277 0.18 +/- 0.11

< 0.005

< 0.011

< 0.009

< 0.008

< 0.010

< 0.047 05-07-20 281

< 0.13

< 0.010

< 0.014

< 0.011

< 0.009

< 0.022

< 0.055 05-14-20 283

< 0.12

< 0.013

< 0.010

< 0.018

< 0.012

< 0.011

< 0.029

< 0.053 05-21-20 282

< 0.12

< 0.013

< 0.005

< 0.016

< 0.012

< 0.009

< 0.016

< 0.052 05-27-20 235

< 0.14

< 0.009

< 0.006

< 0.021

< 0.014

< 0.013

< 0.018

< 0.039 06-04-20 322 0.15 +/- 0.08

< 0.004

< 0.006

< 0.012

< 0.008

< 0.007

< 0.014

< 0.049 06-11-20 275 0.14 +/- 0.08

< 0.008

< 0.014

< 0.013

< 0.012

< 0.006

< 0.024

< 0.048 06-18-20 287 0.22 +/- 0.09

< 0.010

< 0.007

< 0.011

< 0.009

< 0.011

< 0.005

< 0.051 06-25-20 272

< 0.13

< 0.005

< 0.015

< 0.012

< 0.007

< 0.016

< 0.049 07-02-20 262

< 0.10

< 0.011

< 0.009

< 0.013

< 0.010

< 0.008

< 0.018

< 0.052 07-09-20 270 0.22 +/- 0.13

< 0.007

< 0.014

< 0.018

< 0.011

< 0.013

< 0.020

< 0.035 07-16-20 280 0.29 +/- 0.14

< 0.012

< 0.010

< 0.018

< 0.009

< 0.022

< 0.042 07-23-20 261 0.32 +/- 0.15

< 0.012

< 0.011

< 0.013

< 0.010

< 0.009

< 0.031

< 0.048 07-29-20 227

< 0.16

< 0.015

< 0.020

< 0.024

< 0.014

< 0.011

< 0.033

< 0.064 08-06-20 301

< 0.11

< 0.009

< 0.012

< 0.011

< 0.010

< 0.006

< 0.013

< 0.046 08-13-20 278

< 0.12

< 0.007

< 0.009

< 0.017

< 0.012

< 0.008

< 0.019

< 0.060 08-20-20 259

< 0.10

< 0.006

< 0.011

< 0.010

< 0.006

< 0.012

< 0.046 08-27-20 249

< 0.11

< 0.010

< 0.009

< 0.013

< 0.028

< 0.040 09-03-20 263

< 0.10

< 0.008

< 0.016

< 0.010

< 0.009

< 0.015

< 0.050 09-10-20 261

< 0.09

< 0.008

< 0.010

< 0.012

< 0.008

< 0.014

< 0.040 09-17-20 268 0.18 +/- 0.09

< 0.013

< 0.007

< 0.019

< 0.011

< 0.016

< 0.056 09-24-20 264 0.24 +/- 0.10

< 0.009

< 0.010

< 0.015

< 0.011

< 0.006

< 0.009

< 0.051 10-01-20 263

< 0.14

< 0.009

< 0.010

< 0.022

< 0.016

< 0.007

< 0.023

< 0.050 10-08-20 263

< 0.10

< 0.009

< 0.012

< 0.010

< 0.011

< 0.017

< 0.064 10-15-20 258 0.36 +/- 0.16

< 0.012

< 0.013

< 0.010

< 0.011

< 0.014

< 0.032

< 0.040 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

CA-A-007 7Be Required LLDs

1-4 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

10-22-20 264 0.22 +/- 0.10

< 0.010

< 0.008

< 0.018

< 0.010

< 0.008

< 0.032

< 0.058 10-29-20 259

< 0.11

< 0.010

< 0.008

< 0.009

< 0.011

< 0.010

< 0.033

< 0.055 11-05-20 266 0.23 +/- 0.13

< 0.011

< 0.009

< 0.019

< 0.010

< 0.011

< 0.015

< 0.047 11-12-20 255 0.20 +/- 0.11

< 0.008

< 0.010

< 0.008

< 0.011

< 0.014

< 0.012

< 0.047 11-19-20 258 0.14 +/- 0.08

< 0.005

< 0.009

< 0.018

< 0.011

< 0.006

< 0.020

< 0.036 11-25-20 219

< 0.10

< 0.015

< 0.009

< 0.015

< 0.012

< 0.008

< 0.024

< 0.053 12-03-20 299 0.21 +/- 0.10

< 0.009

< 0.008

< 0.015

< 0.010

< 0.009

< 0.016

< 0.044 12-10-20 257 0.30 +/- 0.12

< 0.008

< 0.010

< 0.009

< 0.010

< 0.007

< 0.015

< 0.054 12-17-20 256

< 0.13

< 0.006

< 0.014

< 0.016

< 0.011

< 0.010

< 0.015

< 0.048 12-23-20 219

< 0.14

< 0.014

< 0.009

< 0.026

< 0.013

< 0.012

< 0.018

< 0.061 12-30-20 256

< 0.10

< 0.006

< 0.007

< 0.018

< 0.009

< 0.012

< 0.007

< 0.055 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

CA-A-007 (cont.)

7Be Required LLDs

1-5 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

01-09-20 251

< 0.15

< 0.011

< 0.009

< 0.016

< 0.010

< 0.019

< 0.063 01-16-20 244

< 0.13

< 0.007

< 0.016

< 0.010

< 0.008

< 0.038

< 0.052 01-22-20 214

< 0.16

< 0.017

< 0.015

< 0.021

< 0.017

< 0.022

< 0.086 01-30-20 215b

< 0.12

< 0.014

< 0.017

< 0.016

< 0.013

< 0.020

< 0.088 02-06-20 283

< 0.15

< 0.014

< 0.012

< 0.023

< 0.015

< 0.012

< 0.036

< 0.039 02-13-20 291

< 0.12

< 0.008

< 0.009

< 0.021

< 0.011

< 0.008

< 0.026

< 0.060 02-20-20 293

< 0.13

< 0.017

< 0.025

< 0.016

< 0.014

< 0.018

< 0.057 02-27-20 296 0.21 +/- 0.09

< 0.009

< 0.004

< 0.007

< 0.010

< 0.009

< 0.023

< 0.043 03-05-20 289

< 0.12

< 0.010

< 0.011

< 0.019

< 0.011

< 0.013

< 0.018

< 0.045 03-12-20 291

< 0.14

< 0.007

< 0.013

< 0.026

< 0.017

< 0.014

< 0.015

< 0.056 03-19-20 295

< 0.08

< 0.006

< 0.008

< 0.017

< 0.009

< 0.008

< 0.010

< 0.039 03-26-20 287

< 0.10

< 0.009

< 0.007

< 0.016

< 0.013

< 0.014

< 0.049 04-02-20 285 0.20 +/- 0.09

< 0.007

< 0.005

< 0.013

< 0.009

< 0.011

< 0.041 04-09-20 274

< 0.10

< 0.003

< 0.008

< 0.010

< 0.009

< 0.031 04-16-20 266 0.19 +/- 0.10

< 0.010

< 0.008

< 0.022

< 0.010

< 0.009

< 0.011

< 0.068 04-23-20 273 0.21 +/- 0.11

< 0.006

< 0.005

< 0.015

< 0.011

< 0.014

< 0.007

< 0.049 04-30-20 272

< 0.10

< 0.009

< 0.006

< 0.012

< 0.009

< 0.010

< 0.012

< 0.044 05-07-20 278 0.30 +/- 0.15

< 0.011

< 0.010

< 0.013

< 0.012

< 0.008

< 0.031

< 0.052 05-14-20 268c 0.17 +/- 0.09

< 0.010

< 0.008

< 0.016

< 0.010

< 0.009

< 0.013

< 0.041 05-21-20 278

< 0.10

< 0.006

< 0.005

< 0.013

< 0.009

< 0.016

< 0.045 05-27-20 239

< 0.10

< 0.005

< 0.004

< 0.018

< 0.011

< 0.012

< 0.016

< 0.036 06-04-20 326

< 0.08

< 0.003

< 0.009

< 0.008

< 0.017

< 0.042 06-11-20 282 0.20 +/- 0.10

< 0.005

< 0.004

< 0.012

< 0.010

< 0.007

< 0.011

< 0.035 06-18-20 294 0.33 +/- 0.11

< 0.004

< 0.008

< 0.017

< 0.010

< 0.011

< 0.015

< 0.059 06-25-20 277 0.26 +/- 0.09

< 0.008

< 0.011

< 0.017

< 0.010

< 0.006

< 0.011

< 0.032 07-02-20 268

< 0.12

< 0.011

< 0.012

< 0.022

< 0.013

< 0.016

< 0.060 07-09-20 284

< 0.18

< 0.016

< 0.012

< 0.014

< 0.013

< 0.007

< 0.044

< 0.043 07-16-20 289 0.27 +/- 0.12

< 0.008

< 0.010

< 0.020

< 0.010

< 0.009

< 0.019

< 0.048 07-23-20 269 0.21 +/- 0.12

< 0.004

< 0.011

< 0.012

< 0.010

< 0.023

< 0.032 07-29-20 239

< 0.16

< 0.016

< 0.009

< 0.020

< 0.013

< 0.034

< 0.046 08-06-20 311

< 0.12

< 0.009

< 0.008

< 0.015

< 0.009

< 0.018

< 0.035 08-13-20 287 0.23 +/- 0.09

< 0.007

< 0.008

< 0.019

< 0.011

< 0.009

< 0.017

< 0.041 08-20-20 274 0.20 +/- 0.11

< 0.006

< 0.008

< 0.017

< 0.010

< 0.006

< 0.012

< 0.038 08-27-20 261

< 0.14

< 0.011

< 0.012

< 0.018

< 0.014

< 0.013

< 0.020

< 0.045 09-03-20 272

< 0.14

< 0.009

< 0.013

< 0.011

< 0.025

< 0.033 09-10-20 266

< 0.14

< 0.008

< 0.010

< 0.013

< 0.014

< 0.009

< 0.021

< 0.039 09-17-20 270

< 0.16

< 0.016

< 0.017

< 0.037

< 0.019

< 0.016

< 0.056

< 0.071 09-24-20 263 0.29 +/- 0.10

< 0.005

< 0.009

< 0.010

< 0.011

< 0.013

< 0.043 10-01-20 282 0.20 +/- 0.08

< 0.006

< 0.007

< 0.008

< 0.011

< 0.012

< 0.029 10-08-20 284

< 0.12

< 0.009

< 0.008

< 0.013

< 0.011

< 0.007

< 0.026

< 0.055 10-15-20 279 0.20 +/- 0.11

< 0.011

< 0.009

< 0.016

< 0.010

< 0.009

< 0.020

< 0.048 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

b Lower volume possibly caused by a pump failure. I-131 < 0.026 pCi/m3 (CR#202000546).

c 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 20 minutes of lost sample time. The lost sample time would not have impacted the sample negatively (CR#202002472).

See the narrative in Part I for details.

CA-A-008 7Be Required LLDs

1-6 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

10-22-20 291 0.22 +/- 0.13

< 0.010

< 0.008

< 0.016

< 0.008

< 0.004

< 0.017

< 0.044 10-29-20 289

< 0.12

< 0.008

< 0.009

< 0.016

< 0.010

< 0.005

< 0.020

< 0.050 11-05-20 295 0.16 +/- 0.09

< 0.008

< 0.009

< 0.008

< 0.006

< 0.021

< 0.046 11-12-20 11-19-20 255

< 0.13

< 0.011

< 0.015

< 0.012

< 0.005

< 0.022

< 0.048 11-25-20 233

< 0.14

< 0.008

< 0.011

< 0.026

< 0.012

< 0.009

< 0.037

< 0.073 12-03-20 314

< 0.10

< 0.006

< 0.014

< 0.011

< 0.009

< 0.016

< 0.066 12-10-20 275

< 0.17

< 0.014

< 0.016

< 0.008

< 0.034

< 0.058 12-17-20 267

< 0.11

< 0.009

< 0.011

< 0.010

< 0.012

< 0.063 12-23-20 239

< 0.17

< 0.010

< 0.013

< 0.028

< 0.012

< 0.008

< 0.043

< 0.057 12-30-20 281

< 0.11

< 0.008

< 0.010

< 0.020

< 0.011

< 0.012

< 0.023

< 0.059 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

b "NS" = No sample; see Part I Table 5.5, Listing of Missed Samples.

CA-A-008 (cont.)

NSb 7Be Required LLDs

1-7 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

01-09-20 272

< 0.11

< 0.011

< 0.005

< 0.012

< 0.011

< 0.007

< 0.046

< 0.045 01-16-20 267

< 0.10

< 0.007

< 0.010

< 0.011

< 0.010

< 0.012

< 0.014

< 0.049 01-22-20 238

< 0.11

< 0.011

< 0.005

< 0.016

< 0.012

< 0.009

< 0.030

< 0.052 01-30-20 307

< 0.09

< 0.009

< 0.006

< 0.017

< 0.010

< 0.009

< 0.015

< 0.042 02-06-20 261

< 0.16

< 0.010

< 0.015

< 0.034

< 0.016

< 0.018

< 0.026

< 0.055 02-13-20 266

< 0.11

< 0.011

< 0.004

< 0.010

< 0.011

< 0.009

< 0.026

< 0.036 02-20-20 264

< 0.14

< 0.013

< 0.015

< 0.023

< 0.016

< 0.012

< 0.031

< 0.045 02-27-20 281 0.25 +/- 0.14

< 0.010

< 0.005

< 0.021

< 0.011

< 0.009

< 0.031

< 0.061 03-05-20 274

< 0.12

< 0.010

< 0.006

< 0.011

< 0.010

< 0.007

< 0.011

< 0.052 03-12-20 274

< 0.12

< 0.011

< 0.019

< 0.013

< 0.012

< 0.067 03-19-20 276

< 0.09

< 0.010

< 0.008

< 0.017

< 0.011

< 0.015

< 0.048 03-26-20 272

< 0.09

< 0.010

< 0.009

< 0.011

< 0.045 04-02-20 270 0.26 +/- 0.13

< 0.008

< 0.010

< 0.013

< 0.011

< 0.013

< 0.014

< 0.061 04-09-20 273

< 0.13

< 0.011

< 0.023

< 0.014

< 0.021

< 0.046 04-16-20 274

< 0.12

< 0.007

< 0.009

< 0.013

< 0.011

< 0.008

< 0.014

< 0.028 04-23-20 275 0.21 +/- 0.11

< 0.008

< 0.021

< 0.011

< 0.009

< 0.010

< 0.043 04-30-20 268

< 0.10

< 0.008

< 0.013

< 0.010

< 0.007

< 0.054 05-07-20 272 0.23 +/- 0.10

< 0.009

< 0.014

< 0.010

< 0.009

< 0.022

< 0.046 05-14-20 269b 0.35 +/- 0.13

< 0.007

< 0.009

< 0.020

< 0.010

< 0.009

< 0.024

< 0.032 05-21-20 270

< 0.09

< 0.011

< 0.005

< 0.020

< 0.012

< 0.010

< 0.017

< 0.034 05-27-20 227

< 0.14

< 0.009

< 0.012

< 0.027

< 0.015

< 0.013

< 0.040

< 0.054 06-04-20 312

< 0.11

< 0.008

< 0.005

< 0.015

< 0.011

< 0.007

< 0.012

< 0.051 06-11-20 266 0.18 +/- 0.10

< 0.010

< 0.009

< 0.017

< 0.012

< 0.008

< 0.006

< 0.046 06-18-20 279 0.27 +/- 0.13

< 0.006

< 0.015

< 0.024

< 0.015

< 0.012

< 0.014

< 0.040 06-25-20 264 0.41 +/- 0.12

< 0.005

< 0.014

< 0.015

< 0.011

< 0.009

< 0.018

< 0.040 07-02-20 258

< 0.11

< 0.010

< 0.007

< 0.024

< 0.010

< 0.009

< 0.025

< 0.050 07-09-20 267 0.35 +/- 0.15

< 0.006

< 0.003

< 0.014

< 0.010

< 0.008

< 0.023

< 0.047 07-16-20 276 0.26 +/- 0.12

< 0.007

< 0.010

< 0.014

< 0.008

< 0.010

< 0.018

< 0.043 07-23-20 257

< 0.16

< 0.013

< 0.011

< 0.021

< 0.015

< 0.010

< 0.089

< 0.056 07-29-20 227

< 0.17

< 0.012

< 0.011

< 0.027

< 0.015

< 0.009

< 0.044

< 0.044 08-06-20 304

< 0.10

< 0.006

< 0.013

< 0.019

< 0.010

< 0.008

< 0.017

< 0.036 08-13-20 278 0.20 +/- 0.09

< 0.009

< 0.011

< 0.016

< 0.009

< 0.010

< 0.014

< 0.042 08-20-20 268 0.21 +/- 0.12

< 0.010

< 0.007

< 0.017

< 0.012

< 0.011

< 0.017

< 0.053 08-27-20 253

< 0.17

< 0.016

< 0.015

< 0.026

< 0.018

< 0.011

< 0.023

< 0.052 09-03-20 268

< 0.13

< 0.006

< 0.008

< 0.007

< 0.010

< 0.008

< 0.027

< 0.054 09-10-20 264

< 0.16

< 0.015

< 0.019

< 0.014

< 0.016

< 0.013

< 0.024

< 0.065 09-17-20 271

< 0.11

< 0.006

< 0.007

< 0.018

< 0.012

< 0.014

< 0.016

< 0.051 09-24-20 267 0.35 +/- 0.15

< 0.007

< 0.012

< 0.007

< 0.009

< 0.005

< 0.013

< 0.052 10-01-20 267

< 0.15

< 0.010

< 0.014

< 0.020

< 0.015

< 0.007

< 0.019

< 0.072 10-08-20 269

< 0.14

< 0.005

< 0.009

< 0.013

< 0.010

< 0.029

< 0.057 10-15-20 267

< 0.15

< 0.011

< 0.009

< 0.012

< 0.011

< 0.008

< 0.031

< 0.051 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

b 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months 20 minutes of lost sample time. The lost sample time would not have impacted the sample negatively (CR#202002472).

See the narrative in Part I for details.

Required LLDs CA-A-009 7Be

1-8 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

10-22-20 272 0.29 +/- 0.14

< 0.007

< 0.009

< 0.012

< 0.010

< 0.025

< 0.053 10-29-20 268

< 0.13

< 0.011

< 0.016

< 0.014

< 0.009

< 0.032

< 0.036 11-05-20 275

< 0.13

< 0.011

< 0.009

< 0.017

< 0.012

< 0.005

< 0.018

< 0.051 11-12-20 263 0.20 +/- 0.11

< 0.006

< 0.008

< 0.011

< 0.009

< 0.008

< 0.010

< 0.048 11-19-20 269

< 0.11

< 0.008

< 0.009

< 0.010

< 0.009

< 0.027

< 0.054 11-25-20 228

< 0.15

< 0.012

< 0.014

< 0.013

< 0.007

< 0.026

< 0.042 12-03-20 308

< 0.09

< 0.006

< 0.007

< 0.009

< 0.014

< 0.031 12-10-20 269

< 0.12

< 0.006

< 0.011

< 0.010

< 0.012

< 0.016

< 0.055 12-17-20 265

< 0.12

< 0.007

< 0.009

< 0.018

< 0.010

< 0.009

< 0.015

< 0.051 12-23-20 228

< 0.13

< 0.011

< 0.016

< 0.012

< 0.009

< 0.022

< 0.066 12-30-20 268 0.23 +/- 0.11

< 0.007

< 0.009

< 0.018

< 0.010

< 0.005

< 0.013

< 0.054 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

CA-A-009 (cont.)

7Be Required LLDs

1-9 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

01-09-20 286

< 0.11

< 0.009

< 0.019

< 0.010

< 0.007

< 0.052

< 0.045 01-16-20 286

< 0.09

< 0.007

< 0.004

< 0.009

< 0.008

< 0.007

< 0.008

< 0.047 01-22-20 254

< 0.11

< 0.013

< 0.017

< 0.012

< 0.010

< 0.011

< 0.052 01-30-20 323

< 0.09

< 0.006

< 0.009

< 0.012

< 0.009

< 0.005

< 0.007

< 0.044 02-06-20 286

< 0.10

< 0.004

< 0.014

< 0.011

< 0.005

< 0.033

< 0.043 02-13-20 286

< 0.10

< 0.006

< 0.011

< 0.017

< 0.010

< 0.008

< 0.027

< 0.046 02-20-20 284

< 0.13

< 0.015

< 0.027

< 0.018

< 0.014

< 0.029

< 0.073 02-27-20 289

< 0.10

< 0.008

< 0.006

< 0.009

< 0.010

< 0.007

< 0.013

< 0.040 03-05-20 284

< 0.10

< 0.009

< 0.006

< 0.012

< 0.010

< 0.009

< 0.012

< 0.048 03-12-20 287 0.15 +/- 0.08

< 0.009

< 0.006

< 0.013

< 0.011

< 0.007

< 0.015

< 0.029 03-19-20 296

< 0.10

< 0.006

< 0.012

< 0.014

< 0.012

< 0.008

< 0.020

< 0.033 03-26-20 295

< 0.09

< 0.005

< 0.006

< 0.013

< 0.009

< 0.005

< 0.047 04-02-20 291

< 0.13

< 0.014

< 0.025

< 0.016

< 0.015

< 0.032

< 0.036 04-09-20 296

< 0.12

< 0.006

< 0.008

< 0.021

< 0.013

< 0.011

< 0.017

< 0.047 04-16-20 295 0.21 +/- 0.11

< 0.005

< 0.009

< 0.008

< 0.012

< 0.046 04-23-20 300 0.17 +/- 0.10

< 0.012

< 0.010

< 0.012

< 0.011

< 0.006

< 0.009

< 0.035 04-30-20 268 0.18 +/- 0.10

< 0.007

< 0.011

< 0.010

< 0.009

< 0.011

< 0.009

< 0.062 05-07-20 279

< 0.14

< 0.009

< 0.022

< 0.010

< 0.012

< 0.051 05-14-20 278

< 0.14

< 0.011

< 0.019

< 0.012

< 0.025

< 0.060 05-21-20 282 0.15 +/- 0.09

< 0.010

< 0.012

< 0.018

< 0.012

< 0.006

< 0.017

< 0.052 05-27-20 241

< 0.13

< 0.011

< 0.005

< 0.022

< 0.011

< 0.009

< 0.025

< 0.037 06-04-20 331 0.25 +/- 0.14

< 0.013

< 0.011

< 0.029

< 0.014

< 0.011

< 0.029

< 0.048 06-11-20 294

< 0.14

< 0.009

< 0.008

< 0.022

< 0.016

< 0.012

< 0.022

< 0.046 06-18-20 308 0.31 +/- 0.11

< 0.005

< 0.009

< 0.016

< 0.009

< 0.005

< 0.012

< 0.041 06-25-20 297 0.22 +/- 0.07

< 0.008

< 0.010

< 0.011

< 0.009

< 0.007

< 0.012

< 0.029 07-02-20 287

< 0.10

< 0.009

< 0.007

< 0.023

< 0.011

< 0.006

< 0.022

< 0.053 07-09-20 304 0.19 +/- 0.10

< 0.009

< 0.008

< 0.012

< 0.010

< 0.008

< 0.029

< 0.030 07-16-20 318 0.24 +/- 0.13

< 0.004

< 0.008

< 0.022

< 0.009

< 0.007

< 0.031

< 0.047 07-23-20 298 0.16 +/- 0.09

< 0.007

< 0.009

< 0.015

< 0.009

< 0.007

< 0.027

< 0.037 07-29-20 268 0.22 +/- 0.12

< 0.012

< 0.009

< 0.019

< 0.011

< 0.009

< 0.041

< 0.068 08-06-20 352 0.23 +/- 0.10

< 0.004

< 0.008

< 0.009

< 0.007

< 0.021

< 0.028 08-13-20 327 0.20 +/- 0.10

< 0.010

< 0.007

< 0.009

< 0.007

< 0.008

< 0.010

< 0.035 08-20-20 309 0.26 +/- 0.10

< 0.005

< 0.007

< 0.014

< 0.011

< 0.007

< 0.013

< 0.048 08-27-20 300 0.19 +/- 0.10

< 0.007

< 0.006

< 0.012

< 0.009

< 0.007

< 0.020

< 0.047 09-03-20 313

< 0.17

< 0.012

< 0.010

< 0.027

< 0.016

< 0.015

< 0.049

< 0.061 09-10-20 310 0.18 +/- 0.08

< 0.005

< 0.008

< 0.017

< 0.010

< 0.007

< 0.015

< 0.055 09-17-20 315

< 0.11

< 0.007

< 0.008

< 0.010

< 0.021

< 0.043 09-24-20 310 0.25 +/- 0.10

< 0.007

< 0.017

< 0.009

< 0.010

< 0.026 10-01-20 307 0.26 +/- 0.11

< 0.004

< 0.010

< 0.017

< 0.010

< 0.006

< 0.012

< 0.031 10-08-20 306

< 0.12

< 0.013

< 0.011

< 0.017

< 0.012

< 0.042

< 0.044 10-15-20 306 0.26 +/- 0.13

< 0.004

< 0.008

< 0.012

< 0.009

< 0.004

< 0.022

< 0.033 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

CA-A-010 7Be Required LLDs

1-10 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

10-22-20 303

< 0.10

< 0.006

< 0.009

< 0.010

< 0.007

< 0.021

< 0.051 10-29-20 291

< 0.09

< 0.009

< 0.006

< 0.010

< 0.004

< 0.017

< 0.030 11-05-20 308 0.21 +/- 0.11

< 0.005

< 0.008

< 0.019

< 0.010

< 0.007

< 0.017

< 0.056 11-12-20 297 0.22 +/- 0.10

< 0.008

< 0.009

< 0.010

< 0.008

< 0.012

< 0.041 11-19-20 294 0.16 +/- 0.09

< 0.008

< 0.012

< 0.011

< 0.006

< 0.018

< 0.037 11-25-20 250

< 0.12

< 0.007

< 0.008

< 0.020

< 0.010

< 0.005

< 0.027

< 0.069 12-03-20 333

< 0.12

< 0.008

< 0.013

< 0.009

< 0.044 12-10-20 293 0.22 +/- 0.13

< 0.005

< 0.007

< 0.013

< 0.009

< 0.007

< 0.017

< 0.032 12-17-20 279

< 0.16

< 0.018

< 0.012

< 0.020

< 0.021

< 0.036

< 0.060 12-23-20 271

< 0.10

< 0.008

< 0.007

< 0.015

< 0.010

< 0.012

< 0.032 12-30-20 316

< 0.12

< 0.007

< 0.009

< 0.011

< 0.009

< 0.040

< 0.033 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

7Be Required LLDs CA-A-010 (cont.)

1-11 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

01-09-20 269

< 0.15

< 0.007

< 0.011

< 0.024

< 0.012

< 0.010

< 0.038

< 0.059 01-16-20 264

< 0.11

< 0.006

< 0.014

< 0.009

< 0.005

< 0.008

< 0.044 01-22-20 219

< 0.12

< 0.009

< 0.010

< 0.021

< 0.013

< 0.038

< 0.045 01-30-20 295

< 0.09

< 0.018

< 0.011

< 0.016

< 0.014

< 0.027

< 0.068 02-06-20 265

< 0.11

< 0.007

< 0.005

< 0.019

< 0.011

< 0.007

< 0.021

< 0.037 02-13-20 262

< 0.12

< 0.006

< 0.008

< 0.014

< 0.010

< 0.007

< 0.013

< 0.038 02-20-20 265

< 0.12

< 0.009

< 0.006

< 0.012

< 0.009

< 0.007

< 0.057 02-27-20 272 0.18 +/- 0.09

< 0.012

< 0.015

< 0.014

< 0.012

< 0.016

< 0.014

< 0.068 03-05-20 267

< 0.12

< 0.010

< 0.007

< 0.019

< 0.010

< 0.006

< 0.010

< 0.064 03-12-20 269 0.19 +/- 0.10

< 0.009

< 0.008

< 0.023

< 0.010

< 0.008

< 0.014

< 0.054 03-19-20 272

< 0.11

< 0.009

< 0.006

< 0.013

< 0.012

< 0.009

< 0.018

< 0.059 03-26-20 267 0.19 +/- 0.09

< 0.007

< 0.009

< 0.017

< 0.010

< 0.011

< 0.012

< 0.035 04-02-20 267 0.30 +/- 0.10

< 0.011

< 0.008

< 0.009

< 0.011

< 0.010

< 0.014

< 0.046 04-09-20 265

< 0.09

< 0.005

< 0.008

< 0.013

< 0.011

< 0.009

< 0.014

< 0.062 04-16-20 259 0.24 +/- 0.14

< 0.007

< 0.008

< 0.014

< 0.011

< 0.010

< 0.015

< 0.077 04-23-20 268 0.24 +/- 0.11

< 0.006

< 0.007

< 0.012

< 0.009

< 0.011

< 0.021

< 0.041 04-30-20 263

< 0.12

< 0.005

< 0.008

< 0.024

< 0.011

< 0.020

< 0.043 05-07-20 268

< 0.14

< 0.011

< 0.015

< 0.019

< 0.012

< 0.005

< 0.029

< 0.054 05-14-20 265 0.17 +/- 0.09

< 0.006

< 0.012

< 0.009

< 0.005

< 0.010

< 0.039 05-21-20 269

< 0.10

< 0.006

< 0.011

< 0.010

< 0.016

< 0.048 05-27-20 227

< 0.15

< 0.013

< 0.022

< 0.012

< 0.013

< 0.020

< 0.044 06-04-20 308 0.20 +/- 0.10

< 0.005

< 0.003

< 0.018

< 0.010

< 0.007

< 0.016

< 0.044 06-11-20 266 0.29 +/- 0.13

< 0.010

< 0.012

< 0.021

< 0.015

< 0.011

< 0.021

< 0.061 06-18-20 277 0.21 +/- 0.10

< 0.006

< 0.010

< 0.016

< 0.010

< 0.007

< 0.012

< 0.030 06-25-20 263 0.34 +/- 0.15

< 0.007

< 0.011

< 0.013

< 0.009

< 0.006

< 0.012

< 0.053 07-02-20 253

< 0.13

< 0.010

< 0.011

< 0.018

< 0.013

< 0.007

< 0.028

< 0.058 07-09-20 264 0.33 +/- 0.18

< 0.010

< 0.021

< 0.009

< 0.006

< 0.039

< 0.036 07-16-20 272 0.28 +/- 0.14

< 0.007

< 0.011

< 0.017

< 0.010

< 0.007

< 0.032

< 0.044 07-23-20 253

< 0.13

< 0.010

< 0.017

< 0.012

< 0.009

< 0.034

< 0.057 07-29-20 223

< 0.16

< 0.007

< 0.013

< 0.018

< 0.014

< 0.009

< 0.036

< 0.039 08-06-20 299 0.23 +/- 0.13

< 0.015

< 0.010

< 0.024

< 0.012

< 0.007

< 0.038

< 0.057 08-13-20 274 0.18 +/- 0.10

< 0.006

< 0.011

< 0.009

< 0.005

< 0.012

< 0.049 08-20-20 260

< 0.12

< 0.010

< 0.011

< 0.016

< 0.011

< 0.010

< 0.017

< 0.059 08-27-20 249

< 0.15

< 0.010

< 0.012

< 0.019

< 0.013

< 0.011

< 0.039

< 0.053 09-03-20 262

< 0.14

< 0.012

< 0.010

< 0.016

< 0.013

< 0.008

< 0.035

< 0.032 09-10-20 259

< 0.12

< 0.008

< 0.010

< 0.011

< 0.012

< 0.010

< 0.015

< 0.056 09-17-20 262

< 0.11

< 0.008

< 0.015

< 0.011

< 0.009

< 0.068 09-24-20 284 0.30 +/- 0.13

< 0.013

< 0.012

< 0.021

< 0.014

< 0.009

< 0.030

< 0.041 10-01-20 281

< 0.13

< 0.006

< 0.010

< 0.014

< 0.011

< 0.005

< 0.012

< 0.040 10-08-20 279

< 0.15

< 0.008

< 0.010

< 0.014

< 0.009

< 0.008

< 0.036

< 0.042 10-15-20 278

< 0.14

< 0.011

< 0.009

< 0.025

< 0.014

< 0.008

< 0.037

< 0.052 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

CA-A-011 7Be Required LLDs

1-12 Table 1. Air particulates and charcoal cartridges, analyses for gamma-emitting isotopes and I-131a.

Collection: Continuous, weekly exchange.

Units: pCi/m3 Location 58Co 60Co 95Zr 134Cs 137Cs 140BaLa 144Ce 0.050 0.060 Date Collected Vol.

10-22-20 286

< 0.11

< 0.009

< 0.007

< 0.020

< 0.009

< 0.022

< 0.060 10-29-20 280

< 0.13

< 0.009

< 0.022

< 0.012

< 0.009

< 0.022

< 0.048 11-05-20 292 0.23 +/- 0.08

< 0.006

< 0.007

< 0.006

< 0.009

< 0.011

< 0.018

< 0.050 11-12-20 280 0.18 +/- 0.09

< 0.008

< 0.013

< 0.010

< 0.009

< 0.005

< 0.012

< 0.058 11-19-20 284

< 0.15

< 0.013

< 0.010

< 0.028

< 0.015

< 0.013

< 0.045

< 0.058 11-25-20 241

< 0.18

< 0.018

< 0.010

< 0.027

< 0.016

< 0.008

< 0.042

< 0.044 12-03-20 326 0.21 +/- 0.08

< 0.005

< 0.007

< 0.011

< 0.008

< 0.007

< 0.018

< 0.047 12-10-20 285

< 0.13

< 0.009

< 0.012

< 0.014

< 0.013

< 0.012

< 0.019

< 0.044 12-17-20 277

< 0.10

< 0.005

< 0.011

< 0.026

< 0.011

< 0.008

< 0.023

< 0.052 12-23-20 238

< 0.13

< 0.013

< 0.009

< 0.024

< 0.012

< 0.009

< 0.024

< 0.065 12-30-20 281

< 0.12

< 0.010

< 0.009

< 0.015

< 0.011

< 0.010

< 0.015

< 0.054 a Iodine-131 concentrations are < 0.07 pCi/m3 unless noted otherwise.

Required LLDs CA-A-011 (cont.)

7Be

2-1 Table 2. Milk, analyses for iodine-131 and gamma-emitting isotopes.

Collection: Semimonthly during grazing season, monthly otherwise.

Units: pCi/L Location CA-MLK-M9 Date Lab Concentration (pCi/L)

Collected Code I-131 Zn-65 Cs-134 Cs-137 Ba-La-140 1

15 18 15 a Milk sampling discontined in 2018.

K-40 Required LLDs Collection discontinued.a

3-1 Table 3. Vegetation, analyses for iodine-131 and gamma-emitting isotopes.

Collection: Monthly, during growing season Units: pCi/kg wet Collection Lab Code Date 54Mn 58Co 60Co 131I 134Cs 137Cs 5/12/2020 CAVE-1962 6/9/2020 5354 +/- 395

< 13.4

< 7.5

< 15.7

< 16.4

< 13.5

< 11.9 CAVE-1963 6/9/2020 3066 +/- 253

< 7.3

< 8.2

< 8.5

< 9.1

< 7.9

< 5.1 CAVE-1964 6/9/2020 3203 +/- 291

< 8.8

< 10.1

< 5.4

< 9.3

< 9.9

< 8.1 CAVE-1965 6/9/2020 3647 +/- 352

< 7.0

< 13.2

< 8.7

< 18.7

< 11.6

< 6.9 CAVE-1966 6/9/2020 3557 +/- 287

< 9.8

< 6.3

< 6.0

< 14.2

< 9.4

< 6.2 CAVE-1967 6/9/2020 4156 +/- 293

< 9.6

< 6.0

< 8.4

< 14.6

< 8.8

< 6.9 CAVE-2389 7/14/2020 5003 +/- 322

< 5.0

< 7.7

< 8.3

< 7.9

< 8.6

< 7.7 CAVE-2390 7/14/2020 3226 +/- 280

< 7.8

< 5.7

< 7.6

< 9.5

< 8.6

< 7.6 CAVE-2960 8/19/2020 3642 +/- 281

< 7.1

< 5.7

< 8.2

< 20.4

< 9.1

< 6.2 CAVE-2961 8/19/2020 3851 +/- 326

< 8.4

< 8.7

< 11.1

< 22.2

< 12.3

< 12.5 CAVE-3207 9/8/2020 6140 +/- 375

< 10.2

< 8.7

< 8.9

< 43.4

< 9.7

< 12.1 CAVE-3208 9/8/2020 5851 +/- 347

< 8.8

< 7.1

< 4.8

< 56.9

< 11.4

< 6.1 CAVE-3210 9/8/2020 4371 +/- 331

< 6.7

< 6.0

< 6.4

< 34.2

< 12.5

< 9.3 CAVE-3211 9/8/2020 5889 +/- 383

< 10.9

< 12.9

< 7.5

< 31.0

< 11.9

< 7.4 CAVE-3212 9/8/2020 3375 +/- 334

< 9.2

< 12.8

< 8.3

< 41.8

< 13.3

< 12.8 CAVE-3771 10/13/2020 6485 +/- 440

< 11.8

< 11.0

< 8.5

< 58.5

< 13.1

< 13.2 CAVE-3772 10/13/2020 3360 +/- 234

< 5.8

< 10.2

< 5.3

< 44.4

< 8.1

< 4.6 CAVE-3773 10/13/2020 4010 +/- 247

< 5.0

< 7.6

< 5.8

< 50.7

< 7.4

< 8.8 CAVE-3774 10/13/2020 4410 +/- 248

< 4.2

< 9.8

< 5.4

< 42.0

< 7.5

< 3.6 CAVE-3775 10/13/2020 5915 +/- 304

< 7.4

< 5.7

< 6.6

< 43.0

< 8.6

< 9.0 CAVE-3776 10/13/2020 4470 +/- 282

< 7.3

< 7.9

< 5.6

< 59.4

< 10.0

< 8.3 CAVE-3777 10/13/2020 6372 +/- 361

< 11.7

< 14.4

< 10.3

< 53.0

< 10.4

< 10.5 a "NS" = No sample; see Part I Table 5.5, Listing of Missed Samples.

Mustard Lettuce Collard Greens Swiss Chard Kale Collard Greens Sample Type Mustard Greens Location: CA-FPL-V9 Concentration (pCi/kg wet) 40K Turnip Greens Lettuce Beet Greens NSa Swiss Chard Collard Greens Swiss Chard Turnip greens Swiss Chard Beet Collard Mustard Turnip greens Collard Greens Turnip Lettuce

3-2 Table 3. Vegetation, analyses for iodine-131 and gamma-emitting isotopes.

Collection: Monthly, during growing season Units: pCi/kg wet Collection Lab Code Date 54Mn 58Co 60Co 131I 134Cs 137Cs CAVE-1473 5/11/2020 4943 +/- 331

< 9.0

< 5.4

< 9.5

< 8.2

< 9.1

< 10.9 CAVE-1474 5/11/2020 4110 +/- 309

< 11.0

< 10.7

< 6.4

< 8.1

< 8.9

< 8.2 CAVE-1475 5/11/2020 6891 +/- 439

< 10.2

< 6.1

< 6.6

< 12.2

< 12.1

< 15.5 CAVE-1968 6/8/2020 3414 +/- 305

< 9.9

< 8.8

< 7.6

< 22.9

< 11.2

< 11.4 CAVE-1969 6/8/2020 3935 +/- 356

< 10.6

< 5.1

< 8.3

< 17.5

< 11.0

< 12.2 CAVE-1970 6/8/2020 5404 +/- 383

< 10.6

< 8.6

< 8.5

< 26.4

< 14.4

< 9.0 CAVE-1971 6/8/2020 5513 +/- 382

< 11.6

< 13.7

< 12.6

< 10.9

< 13.0

< 12.6 CAVE-2391 7/13/2020 3449 +/- 305

< 9.5

< 8.7

< 8.1

< 12.4

< 10.6

< 9.8 CAVE-2392 7/13/2020 3993 +/- 337

< 12.1

< 8.0

< 10.8

< 22.4

< 11.4

< 11.4 CAVE-2393 7/13/2020 7773 +/- 420

< 11.3

< 6.8

< 10.8

< 13.8

< 11.2

< 9.2 CAVE-2964 8/18/2020 3374 +/- 283

< 8.5

< 9.3

< 7.9

< 23.9

< 12.0

< 12.2 CAVE-2965 8/18/2020 9690 +/- 586

< 14.7

< 15.5

< 14.0

< 30.2

< 16.3

< 15.6 CAVE-3213 9/7/2020 4600 +/- 463

< 8.7

< 12.3

< 14.7

< 53.3

< 17.7

< 17.0 CAVE-3214 9/7/2020 5883 +/- 431

< 15.6

< 9.5

< 9.9

< 57.4

< 13.1

< 11.1 CAVE-3215 9/7/2020 4016 +/- 422

< 10.5

< 10.0

< 14.1

< 25.5

< 16.2

< 11.2 CAVE-3780 10/12/2020 5154 +/- 147

< 3.4

< 6.2

< 3.9

< 34.5

< 4.8

< 3.2 CAVE-3781 10/12/2020 7208 +/- 627

< 17.7

< 19.8

< 16.6

< 53.4

< 22.8

< 18.4 CAVE-3782 10/12/2020 4928 +/- 163

< 4.7

< 4.2

< 5.5

< 49.4

< 5.8

< 5.9 CAVE-1476 5/11/2020 3034 +/- 427

< 15.8

< 9.0

< 15.7

< 17.6

< 16.4

< 22.4 CAVE-1477 5/11/2020 9008 +/- 623

< 14.7

< 8.4

< 10.1

< 14.5

< 17.4

< 15.1 CAVE-1478 5/11/2020 2932 +/- 414

< 17.0

< 18.8

< 17.0

< 15.0

< 16.8

< 15.8 CAVE-1972 6/8/2020 4176 +/- 409

< 14.1

< 13.7

< 13.0

< 23.5

< 14.7

< 15.0 CAVE-1973 6/8/2020 4964 +/- 337

< 7.2

< 6.2

< 7.2

< 17.1

< 8.6

< 5.7 CAVE-1974 6/8/2020 4700 +/- 423

< 11.0

< 13.9

< 8.0

< 30.0

< 14.2

< 6.6 CAVE-1975 6/8/2020 4901 +/- 403

< 10.1

< 6.7

< 13.1

< 23.1

< 13.9

< 8.3 CAVE-2394 7/13/2020 4456 +/- 390

< 17.6

< 8.2

< 11.0

< 12.8

< 13.8

< 13.7 CAVE-2395 7/13/2020 8241 +/- 513

< 11.7

< 9.4

< 11.0

< 10.9

< 11.9

< 11.4 CAVE-2962 8/18/2020 4254 +/- 474

< 16.0

< 9.8

< 10.1

< 43.9

< 18.6

< 9.7 CAVE-2963 8/18/2020 10908 +/- 809

< 17.0

< 15.3

< 26.1

< 35.9

< 26.3

< 21.8 CAVE-3216 9/7/2020 4768 +/- 315

< 8.1

< 6.8

< 10.6

< 13.9

< 7.9

< 7.1 CAVE-3217 9/7/2020 5092 +/- 331

< 8.0

< 7.6

< 13.4

< 13.3

< 11.4

< 7.5 CAVE-3778 10/12/2020 5751 +/- 145

< 4.6

< 5.5

< 4.7

< 32.3

< 4.3

< 3.7 CAVE-3779 10/12/2020 6978 +/- 323

< 7.9

< 8.4

< 5.1

< 45.6

< 9.0

< 10.1 5/12/2020 CAVE-1976 6/8/2020 3567 +/- 295

< 11.3

< 7.1

< 10.5

< 20.2

< 9.9

< 10.3 CAVE-2396 7/13/2020 2342 +/- 225

< 6.1

< 6.8

< 5.2

< 12.7

< 9.1

< 11.9 8/18/2020 CAVE-3218 9/7/2020 3706 +/- 367

< 10.6

< 11.4

< 11.2

< 33.5

< 14.0

< 11.4 CAVE-3769 10/12/2020 5786 +/- 393

< 13.4

< 15.5

< 6.9

< 49.1

< 12.6

< 13.9 a "NS" = No sample; see Part I Table 5.5, Listing of Missed Samples.

NSa Kale Kale NSa Spinach/ Mustard Cabbage Cabbage Cabbage Spinach/ Mustard Swiss Chard Location: CA-FPL-V19 Lettuce Collard Greens Broccoli Swiss Chard Swiss Chard Sample Type Spinach/ Mustards Swiss Chard Mustard Cabbage Location: CA-FPL-V16 Cabbage Mix Salad Greens Collard Greens Swiss Chard Location: CA-FPL-V12 Turnip greens Collard Greens Lettuce Collard Swiss Chard 40K Spinach/ Mustard Concentration (pCi/kg wet)

Collard Greens Swiss Chard Cabbage Turnip Cabbage Swiss Chard Red Romaine Lettuce Swiss Chard Cauliflower Greens Cabbage

4-1 Table 4. Non-food Crops, analyses for tritium and gamma-emitting isotopes.

Collection: Annually, at harvest Units: pCi/kg wet Sample Collection (pCi/L)

Lab Code Type Date 3H 54Mn 58Co 60Co 134Cs 137Cs CAVE-3763 Soybeans 10/12/2020

< 303 9864 +/- 245

< 5.9

< 8.4

< 7.7

< 7.0

< 7.1 CAVE-3764 Soybeans 10/12/2020

< 156 13051 +/- 270

< 9.4

< 6.6

< 7.0

< 8.4

< 7.6 CAVE-3765 Soybeans 10/12/2020

< 156 12719 +/- 556

< 18.2

< 15.7

< 13.5

< 17.0

< 16.9 CAVE-3766 Soybeans 10/13/2020

< 169 17103 +/- 319

< 7.4

< 10.5

< 6.1

< 7.9

< 9.0 CAVE-3767 Soybeans 10/13/2020

< 303 11754 +/- 263

< 8.2

< 7.1

< 10.7

< 7.0

< 5.7 CAVE-3768 Soybeans 10/12/2020

< 394 15610 +/- 327

< 9.4

< 8.7

< 4.9

< 9.9

< 9.3 CAVE-3762 Soybeans 10/2/2020

< 303 9273 +/- 408

< 14.1

< 16.8

< 10.0

< 13.3

< 14.3 Concentration (pCi/kg wet)

Location: CA-FC-2A 40K Location: CA-FC-3C Location: CA-FC-3A Location: CA-FC-4(C)

Location: CA-FC-2B Location: CA-FC-2C Location: CA-FC-3B

5-1 Table 5. Soil, analyses for gamma-emitting isotopes.

Collection: Annually Collection Lab Code Date 54Mn 59Fe 58Co 60Co 95ZrNb 134Cs 140BaLa Location: SOL-F-002 CASO-4598 12/8/2020 12635 +/- 850

< 43.9

< 74.8

< 52.1

< 14.8 < 101.5

< 33.8 482 +/- 53

< 310.9 Location: SOL-F-006 CASO-4599 12/8/2020 11587 +/- 1090

< 44.7 < 113.9

< 73.2

< 40.6

< 65.5

< 63.4 370 +/- 60

< 261.4 Location: SOL-PR-003 CASO-4597 12/8/2020 9871 +/- 758

< 17.4

< 81.9

< 31.1

< 14.6

< 77.5

< 21.0 170 +/- 37

< 171.5 Location: SOL-PR-007 CASO-4600 12/9/2020 9794 +/- 720

< 34.3

< 59.8

< 31.9

< 16.0

< 45.3

< 25.3 159 +/- 39

< 173.2 Location: SOL-M-009 CASO-4596 12/8/2020 14147 +/- 822

< 30.2

< 95.9

< 39.3

< 14.1

< 88.1

< 28.5 126 +/- 40

< 127.8 Location: SOL-W-001 CASO-4601 12/9/2020 13273 +/- 781

< 27.7

< 47.4

< 36.1

< 12.7

< 69.9

< 27.6

< 29

< 101.6 Location: SOL-W-002 CASO-4602 12/9/2020 13509 +/- 893

< 37.4

< 84.2

< 36.3

< 18.6

< 40.1

< 26.8 115 +/- 42

< 140.9 Location: SOL-W-005 CASO-4603 12/9/2020 16028 +/- 805

< 32.9

< 69.7

< 31.4

< 23.1

< 76.6

< 25.7 69 +/- 31

< 216.1 137Cs Concentration (pCi/kg dry) 40K

6-1 Table 6. Surface water, analyses for tritium and gamma-emitting isotopes.

Collection: Monthly Location: CA-SWA-S01 Units: pCi/L Lab Code Required 239 529 908 1328 Date Collected LLD 02-25-20 03-31-20 04-28-20 H-3 3000 Mn-54 15

< 1.8

< 2.1

< 0.9

< 2.6 Fe-59 30

< 5.1

< 3.6

< 4.3

< 4.9 Co-58 15

< 2.5

< 3.7

< 0.8

< 2.9 Co-60 15

< 2.0

< 2.7

< 1.9

< 1.6 Zn-65 30

< 2.2

< 5.8

< 3.4

< 3.7 Zr-Nb-95 15

< 2.5

< 5.5

< 2.4

< 1.3 I-131 1000

< 7.3

< 6.0

< 6.9

< 4.3 Cs-134 15

< 4.0

< 3.7

< 2.2

< 3.5 Cs-137 18

< 2.6

< 2.5

< 2.3

< 2.7 Ba-La-140 15

< 4.1

< 3.1

< 2.0

< 3.6 Lab Code Required 1783 2212 2645 3059 Date Collected LLD 05-26-20 06-30-20 07-28-20 08-25-20 H-3 3000 Mn-54 15

< 4.0

< 1.7

< 4.1

< 2.4 Fe-59 30

< 7.6

< 7.0

< 7.4

< 7.0 Co-58 15

< 2.7

< 3.2

< 4.6

< 3.0 Co-60 15

< 1.7

< 2.4

< 1.2

< 1.5 Zn-65 30

< 1.8

< 4.9

< 8.1

< 7.9 Zr-Nb-95 15

< 2.5

< 2.9

< 6.6

< 8.3 I-131 1000

< 11.6

< 6.5

< 42.1

< 51.8 Cs-134 15

< 3.3

< 3.2

< 4.8

< 4.0 Cs-137 18

< 3.4

< 3.3

< 2.6

< 3.6 Ba-La-140 15

< 8.5

< 4.0

< 5.9

< 14.6 Lab Code Required 3517 4134 4438 4737 Date Collected LLD 09-30-20 10-28-20 12-29-20 H-3 3000 Mn-54 15

< 4.4

< 2.2

< 1.6

< 3.0 Fe-59 30

< 12.4

< 5.0

< 3.4

< 3.6 Co-58 15

< 5.7

< 3.1

< 3.2

< 2.7 Co-60 15

< 6.5

< 1.9

< 2.0

< 2.2 Zn-65 30

< 10.2

< 6.2

< 4.5

< 4.1 Zr-Nb-95 15

< 8.7

< 5.0

< 3.3

< 2.8 I-131 1000

< 34.0

< 49.2

< 23.4

< 11.2 Cs-134 15

< 5.3

< 4.6

< 3.1

< 3.3 Cs-137 18

< 2.8

< 2.7

< 3.5

< 3.6 Ba-La-140 15

< 14.8

< 7.5

< 6.4

< 5.4

< 155 CASW-CASW-CASW-CASW-CASW-CASW-

< 157

< 153

< 158

< 155

< 159 11-24-20

< 153 CASW-CASW-CASW-CASW-CASW-

< 153

< 157

< 160

< 159 CASW-

< 156 01-28-20

6-2 Table 6. Surface water, analyses for tritium and gamma-emitting isotopes.

Collection: Monthly Location: CA-SWA-S02 Units: pCi/L Lab Code Required 240 530 909 1329 Date Collected LLD 02-25-20 03-31-20 04-28-20 H-3 3000 172 Mn-54 15

< 2.6

< 1.1

< 1.7

< 2.7 Fe-59 30

< 3.0

< 5.5

< 7.3

< 3.5 Co-58 15

< 1.1

< 1.8

< 3.1

< 2.2 Co-60 15

< 1.2

< 1.8

< 2.2

< 1.8 Zn-65 30

< 2.7

< 3.9

< 4.6

< 3.3 Zr-Nb-95 15

< 2.4

< 3.1

< 3.7

< 2.8 I-131 1000

< 2.8

< 8.1

< 13.9

< 4.7 Cs-134 15

< 2.5

< 2.4

< 3.4

< 3.1 Cs-137 18

< 1.9

< 2.1

< 3.0

< 2.3 Ba-La-140 15

< 2.2

< 3.9

< 5.9

< 3.2 Lab Code Required 1784 2213 2646 3060 Date Collected LLD 06-30-20 07-28-20 H-3 3000 247 a

259 298 Mn-54 15

< 2.9

< 2.0

< 2.8

< 2.9 Fe-59 30

< 6.4

< 3.2

< 7.2

< 4.1 Co-58 15

< 2.2

< 1.8

< 3.5

< 4.3 Co-60 15

< 1.4

< 2.0

< 3.1

< 3.0 Zn-65 30

< 4.1

< 3.2

< 5.4

< 6.5 Zr-Nb-95 15

< 4.8

< 1.6

< 3.0

< 4.2 I-131 1000

< 15.8

< 2.7

< 33.1

< 48.8 Cs-134 15

< 3.4

< 2.4

< 3.7

< 4.1 Cs-137 18

< 3.5

< 2.1

< 2.2

< 2.5 Ba-La-140 15

< 7.5

< 1.3

< 11.1

< 13.0 Lab Code Required 3518 4135 4440 4738 Date Collected LLD 09-30-20 10-28-20 11-24-20 H-3 3000 203 510 b

Mn-54 15

< 3.8

< 3.7

< 3.0

< 3.4 Fe-59 30

< 6.2

< 11.5

< 4.5

< 4.4 Co-58 15

< 4.2

< 5.7

< 2.0

< 2.3 Co-60 15

< 4.0

< 3.9

< 1.8

< 2.6 Zn-65 30

< 4.4

< 11.1

< 3.6

< 4.1 Zr-Nb-95 15

< 3.0

< 11.1

< 5.4

< 4.9 I-131 1000

< 34.3

< 44.0

< 25.9

< 10.1 Cs-134 15

< 4.7

< 3.8

< 3.6 Cs-137 18

< 4.6

< 4.1

< 3.7

< 1.7 Ba-La-140 15

< 5.0

< 12.8

< 6.7

< 8.5 a Laboratory duplicate result <160 pCi/L.

b Recount 476 +/- 99 pCi/L; Reanalysis 431 +/- 97 pCi/L.

CASW-CASW-CASW-

+/- 88

< 159

+/- 101 05-26-20 CASW-CASW-

< 159 CASW-

< 153

< 157

< 162 CASW-12-29-20 CASW-

+/- 88

+/- 89 08-25-20 CASW-CASW-

+/- 85 CASW-CASW-01-28-20

7-1

7. Surface Water (Ponds), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CASW-806 03/17/20

< 159

< 2.7

< 4.5

< 2.1

< 1.5

< 4.2

< 1.2

< 3.6

< 3.2

< 6.0 CASW-3243 09/09/20

< 159

< 3.6

< 7.2

< 4.5

< 2.0

< 6.4

< 7.7

< 3.4

< 3.1

< 7.1 CASW-807 03/17/20

< 159

< 3.0

< 4.1

< 3.6

< 2.5

< 4.1

< 3.1

< 3.7

< 2.8

< 2.9 CASW-3244 09/09/20

< 159

< 3.7

< 5.8

< 4.7

< 1.5

< 7.2

< 4.3

< 1.5

< 9.7 CASW-808 03/16/20

< 159

< 1.1

< 2.3

< 1.8

< 1.6

< 1.3

< 2.0

< 2.1

< 1.9

< 2.6 CASW-3245 09/09/20

< 159

< 3.7

< 6.3

< 4.8

< 3.7

< 3.8

< 5.5

< 3.9

< 3.1

< 9.4 CASW-809 03/16/20

< 159

< 2.1

< 5.8

< 2.6

< 2.0

< 5.3

< 4.0

< 3.7

< 3.6

< 4.2 CASW-3246 09/09/20

< 159

< 1.6

< 2.5

< 3.9

< 1.3

< 6.6

< 4.8

< 3.0

< 2.8

< 4.8 CASW-810 03/17/20

< 159

< 2.2

< 6.7

< 1.9

< 1.3

< 3.3

< 4.2

< 3.4

< 2.1

< 2.8 CASW-3247 09/09/20

< 159

< 3.0

< 8.4

< 3.2

< 2.7

< 3.6

< 3.8

< 4.2

< 2.2

< 10.1 CASW-811 03/17/20

< 159

< 1.6

< 3.4

< 0.8

< 2.1

< 4.1

< 2.4

< 2.3

< 2.6

< 2.0 CASW-3248 09/09/20

< 159

< 2.5

< 4.9

< 2.9

< 2.7

< 6.0

< 4.1

< 3.7

< 1.4

< 13.6 CASW-812 03/17/20

< 159

< 3.2

< 5.8

< 3.3

< 2.7

< 3.7

< 3.5

< 4.5

< 3.1

< 5.0 CASW-3249 09/09/20

< 159

< 2.5

< 4.0

< 2.1

< 1.3

< 4.3

< 3.9

< 3.3

< 3.1

< 7.7 CASW-813 03/16/20

< 159

< 2.5

< 7.0

< 2.8

< 2.2

< 6.2

< 3.3

< 3.7

< 4.3

< 5.6 CASW-3250 09/09/20

< 159

< 2.8

< 6.8

< 3.1

< 1.7

< 3.3

< 3.8

< 3.1

< 3.4

< 4.6 CASW-814 03/16/20

< 159

< 1.0

< 2.4

< 1.4

< 1.7

< 1.3

< 2.9

< 1.8

< 1.5

< 5.4 CASW-3251 09/09/20

< 159

< 2.8

< 6.5

< 4.5

< 3.0

< 2.1

< 5.5

< 3.7

< 2.6

< 14.4 3H Location: CA-SWA-OUTFALL 011 Concentration (pCi/L)

Location: CA-SWA-POND 01 Location: CA-SWA-POND 02 Location: CA-SWA-OUTFALL 010 Location: CA-SWA-OUTFALL 015 Location: CA-SWA-SLUDGE LAGOON #6 Location: CA-SWA-OUTFALL 012 Location: CA-SWA-OUTFALL 013 Location: CA-SWA-OUTFALL 014

8-1 Table 8. Drinking Water Wells, analysis for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CADW-330 2/4/2020

< 155

< 2.5

< 10.8

< 3.0

< 2.5

< 5.5

< 3.3

< 3.8

< 2.7

< 4.4 CADW-1330 4/27/2020

< 153

< 2.3

< 4.0

< 2.3

< 1.8

< 1.7

< 2.4

< 2.1

< 1.5 CADW-2647 7/27/2020

< 158

< 3.9

< 6.3

< 2.2

< 1.6

< 3.4

< 5.9

< 4.4

< 2.7

< 12.9 CADW-4143 10/26/2020

< 155

< 3.3

< 3.9

< 3.1

< 1.1

< 2.7

< 5.3

< 4.0

< 3.4

< 5.2 CADW-331 2/4/2020

< 155

< 3.1

< 5.3

< 3.1

< 2.2

< 5.2

< 4.6

< 3.3

< 5.5 CADW-1331 4/27/2020

< 153

< 1.6

< 2.4

< 2.1

< 1.6

< 3.3

< 1.6

< 2.3

< 2.1

< 1.2 CADW-2648 7/27/2020

< 158

< 3.2

< 3.4

< 2.3

< 2.2

< 5.6

< 4.7

< 3.7

< 3.2

< 12.7 CADW-4144 10/28/2020

< 155

< 2.6

< 6.2

< 2.7

< 3.4

< 5.1

< 7.4

< 3.7

< 3.6

< 8.4 CADW-332 2/4/2020

< 155

< 1.7

< 3.3

< 1.3

< 1.9

< 4.1

< 1.7

< 2.1

< 1.9

< 4.0 CADW-1332 4/21/2020

< 153

< 3.7

< 3.8

< 3.0

< 1.3

< 2.9

< 4.4

< 3.5

< 2.5

< 6.0 CADW-2650 7/27/2020

< 158

< 4.8

< 8.1

< 3.2

< 2.6

< 7.2

< 4.1

< 4.4

< 2.4

< 8.3 CADW-4145 10/26/2020

< 155

< 3.0

< 2.5

< 2.3

< 3.5

< 3.0

< 5.8

< 3.9

< 1.7

< 7.5 CADW-333 2/4/2020

< 155

< 2.4

< 3.5

< 1.9

< 2.8

< 5.0

< 5.1

< 3.2

< 3.5

< 5.7 CADW-1333 4/27/2020

< 153

< 3.2

< 6.0

< 3.3

< 2.7

< 3.5

< 3.3

< 3.7

< 3.6

< 4.5 CADW-2651 7/27/2020

< 158

< 3.4

< 7.7

< 4.7

< 4.0

< 9.3

< 6.7

< 4.4

< 4.1

< 4.3 CADW-4146 10/26/2020

< 155

< 1.4

< 3.4

< 1.8

< 1.6

< 2.9

< 1.8

< 1.7

< 2.0

< 1.8 CADW-334 2/4/2020

< 155

< 3.2

< 6.8

< 2.2

< 2.7

< 3.0

< 5.3

< 3.9

< 2.5

< 3.3 CADW-1335 4/27/2020

< 153

< 2.6

< 4.1

< 1.6

< 1.3

< 2.5

< 3.3

< 4.1

< 2.8

< 5.1 CADW-2652 7/27/2020

< 158

< 2.5

< 5.4

< 1.3

< 2.6

< 3.4

< 3.2

< 4.1

< 3.0

< 10.6 CADW-4147 10/26/2020

< 155

< 2.4

< 7.3

< 2.9

< 1.3

< 2.9

< 3.7

< 4.5

< 3.8

< 10.9 CA-DWA-007 (Kriete, Stan) a Owner change in 4th Qtr.;Previous owner Lindeman.

Concentration (pCi/L)

CA-DWA-003 (Ward)

CA-DWA-005 (Brucker Bros.)

CA-DWA-006 (Kuenzel a)

CA-DWA-004 (Miller) 3H

8-2 Table 8. Drinking Water Wells, analysis for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CADW-335 2/4/2020

< 155

< 2.9

< 6.1

< 2.9

< 3.2

< 3.1

< 2.6

< 4.0

< 1.4

< 3.1 CADW-1336 4/27/2020

< 153

< 2.8

< 7.1

< 3.0

< 2.1

< 3.6

< 3.3

< 3.0

< 4.5 CADW-2653 7/27/2020

< 158

< 4.2

< 6.1

< 3.9

< 3.0

< 3.2

< 6.2

< 3.6

< 2.5

< 5.6 10/28/2020 CADW-336 2/4/2020

< 155

< 1.6

< 3.2

< 1.2

< 1.4

< 2.6

< 1.8

< 2.2

< 5.8 CADW-1337 4/27/2020

< 153

< 1.2

< 3.9

< 2.0

< 1.7

< 4.2

< 2.8

< 2.5

< 2.6 CADW-2654 7/27/2020

< 158

< 4.1

< 7.0

< 4.0

< 2.4

< 2.5

< 3.1

< 3.6

< 2.6

< 12.2 CADW-4148 10/26/2020

< 155

< 2.2

< 1.8

< 3.1

< 1.6

< 5.3

< 2.8

< 3.6

< 2.2

< 3.5 CADW-337 2/4/2020

< 155

< 2.4

< 5.4

< 3.7

< 1.7

< 6.3

< 2.9

< 3.4

< 3.1

< 5.6 CADW-1338 4/27/2020

< 153

< 1.8

< 3.6

< 1.2

< 1.6

< 4.4

< 2.6

< 2.2

< 1.9

< 1.5 CADW-2655 7/27/2020

< 158

< 3.3

< 6.8

< 2.4

< 1.2

< 3.7

< 4.4

< 4.0

< 3.1

< 10.1 CADW-4149 10/26/2020

< 155

< 2.9

< 8.2

< 3.9

< 3.3

< 3.8

< 3.7

< 4.0

< 3.4

< 7.5 CADW-338 2/4/2020

< 155

< 3.4

< 5.8

< 3.1

< 1.7

< 2.6

< 3.4

< 3.8

< 2.3

< 4.8 CADW-1339 4/27/2020

< 153

< 2.3

< 4.3

< 2.4

< 2.6

< 8.8

< 3.1

< 3.0

< 3.4

< 4.7 CADW-2656 7/27/2020

< 158

< 3.3

< 6.2

< 3.9

< 2.0

< 5.0

< 3.0

< 2.5

< 14.1 CADW-4150 10/26/2020

< 155

< 2.1

< 5.2

< 4.2

< 2.9

< 5.9

< 3.6

< 13.1 CA-DWA-21 (Baumgarth)

CADW-339 2/4/2020

< 155

< 4.4

< 7.6

< 2.8

< 2.9

< 6.0

< 5.6

< 4.1

< 2.8

< 6.5 CADW-1340 4/27/2020

< 153

< 1.7

< 3.3

< 1.9

< 1.2

< 1.5

< 2.4

< 2.6 CADW-2657 7/27/2020

< 158

< 3.5

< 5.2

< 2.7

< 2.9

< 4.5

< 4.8

< 3.4

< 2.5

< 5.7 CADW-4151 10/26/2020

< 155

< 3.1

< 5.6

< 3.0

< 1.6

< 7.0

< 6.7

< 3.8

< 1.9

< 4.4 a "NS" = No sample; see Part I Table 5.5, Listing of Missed Samples.

b Tom Dillon property previously owned by Susan Dillon (CR#202100085).

CA-DWA-009 (Clardy)

CA-DWA-010 (Dillon, Tom) b 3H NSa CA-DWA-012 (Dillon, Joe)

CA-DWA-008 (Brandt)

Concentration (pCi/L)

8-3 Table 8. Drinking Water Wells, analysis for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CADW-340 2/7/2020

< 154

< 3.0

< 7.0

< 2.7

< 1.4

< 6.0

< 2.8

< 4.0

< 2.3

< 3.4 CADW-1341 4/27/2020

< 153

< 1.6

< 2.6

< 1.5

< 2.1

< 2.5

< 1.5

< 2.2

< 2.4

< 1.8 CADW-2658 7/27/2020

< 158

< 2.1

< 6.0

< 2.4

< 3.4

< 4.2

< 3.3

< 2.3

< 4.7 CADW-4152 10/26/2020

< 155

< 2.1

< 7.1

< 2.2

< 1.3

< 2.8

< 3.7

< 4.3

< 3.2

< 8.2 CADW-341 2/7/2020

< 154

< 2.7

< 3.8

< 4.0

< 3.0

< 6.3

< 3.7

< 3.8

< 2.8

< 6.6 CADW-1342 4/27/2020

< 153

< 3.3

< 4.3

< 1.7

< 4.2

< 3.6

< 3.5

< 2.8

< 5.2 CADW-2659 7/27/2020

< 158

< 1.9

< 5.2

< 2.9

< 2.4

< 5.2

< 3.3

< 2.9

< 2.2

< 6.0 CADW-4153 10/26/2020

< 155

< 2.8

< 4.2

< 2.4

< 3.7

< 6.0

< 4.4

< 3.6

< 2.5

< 14.2 CADW-343 2/7/2020

< 154

< 1.4

< 3.9

< 1.9

< 1.4

< 3.6

< 2.2

< 2.4

< 2.2

< 5.5 CADW-1343 4/27/2020

< 153

< 2.3

< 3.0

< 2.1

< 1.9

< 5.2

< 2.3

< 3.7

< 2.9

< 4.4 CADW-2660 7/27/2020

< 158

< 1.5

< 9.4

< 2.7

< 1.8

< 5.0

< 3.9

< 3.8

< 2.3

< 11.8 CADW-4154 10/26/2020

< 155

< 2.0

< 3.8

< 1.8

< 1.7

< 3.2

< 2.5

< 1.6

< 1.8

< 4.5 CADW-2689 7/27/2020

< 158

< 2.8

< 7.1

< 3.0

< 2.2

< 8.2

< 5.8

< 4.1

< 3.3

< 14.0 CADW-344 2/7/2020

< 154

< 3.6

< 6.7

< 3.4

< 1.9

< 3.7

< 4.9

< 3.5

< 2.5

< 3.8 CADW-1344 4/27/2020

< 153

< 1.3

< 3.4

< 1.4

< 1.9

< 2.3

< 1.7

< 2.9 CADW-2661 7/27/2020

< 158

< 3.9

< 6.9

< 2.5

< 2.0

< 5.9

< 3.2

< 3.4

< 3.2

< 10.0 CADW-4155 10/27/2020

< 155

< 2.4

< 9.4

< 3.9

< 2.1

< 7.5

< 7.1

< 3.4

< 3.6

< 4.9 CADW-345 2/7/2020

< 154

< 1.1

< 6.4

< 3.9

< 2.5

< 6.7

< 3.1

< 3.2

< 2.6

< 4.5 CADW-1345 4/24/2020

< 153

< 2.5

< 5.8

< 4.5

< 1.8

< 5.7

< 4.5

< 4.2

< 1.9

< 5.1 CADW-2662 7/28/2020

< 158

< 1.7

< 8.2

< 1.9

< 2.9

< 5.3

< 4.2

< 3.3

< 2.5

< 13.0 CADW-4156 10/27/2020

< 155

< 4.0

< 6.6

< 3.3

< 2.5

< 3.1

< 6.7

< 4.2

< 4.9

< 8.0 CA-DWA-022 (Plummer)

Concentration (pCi/L) 3H a Special sampling. Property owner officially enrolled in sampling program for 2021.

CA-DWA-025 (Kriete, Mario) a CA-DWA-PW1 (Plant Cafeteria)

CA-DWA-V16 (Wallendorf Farm)

CA-DWA-D23 (Curdt)

CA-DWA-024 (Farley)

9-1 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Concentration (pCi/L)

Lab Code Date 3H 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-83 1/9/2020 164 +/- 83

< 2.2

< 3.9

< 1.6

< 1.2

< 2.6

< 3.1

< 2.7

< 1.6

< 7.3 CAWW-368 2/11/2020 278 +/- 88

< 3.2

< 4.6

< 2.9

< 2.5

< 7.0

< 3.9

< 4.2

< 1.6

< 5.3 CAWW-752 3/13/2020 393 +/- 92

< 0.7

< 3.8

< 1.7

< 2.2

< 3.9

< 2.8

< 2.6

< 5.1 CAWW-930 4/3/2020 364 +/- 92

< 2.4

< 2.3

< 1.7

< 3.7

< 3.3

< 2.7

< 2.6

< 3.7 CAWW-1515 5/11/2020 286 +/- 87

< 3.0

< 5.0

< 3.4

< 2.5

< 4.6

< 4.0

< 3.3

< 2.7

< 9.5 CAWW-2004 6/11/2020 484 +/- 100

< 4.1

< 7.0

< 2.8

< 3.8

< 6.2

< 4.1

< 4.8

< 2.9

< 4.4 CAWW-2433 7/14/2020 292 +/- 90

< 2.6

< 4.7

< 2.6

< 1.6

< 4.5

< 3.7

< 3.4

< 2.7

< 5.1 CAWW-2867 8/12/2020 219 +/- 86

< 2.0

< 3.6

< 2.6

< 0.9

< 3.1

< 1.9

< 1.6

< 5.8 CAWW-3300 9/14/2020

< 159

< 3.0

< 2.8

< 1.3

< 2.2

< 2.8

< 3.9

< 2.9

< 3.7

< 12.5 CAWW-3840 10/14/2020 223 +/- 85

< 2.1

< 8.4

< 2.8

< 2.0

< 5.1

< 5.8

< 3.3

< 3.2

< 9.6 CAWW-4286 11/12/2020 284 +/- 89

< 2.1

< 3.9

< 2.1

< 3.3

< 4.5

< 4.1

< 4.3

< 3.3

< 6.5 CAWW-4580 12/11/2020 336 +/- 102

< 3.6

< 3.0

< 1.9

< 2.8

< 6.1

< 2.9

< 4.6

< 3.1

< 1.9 CAWW-84 1/9/2020

< 158

< 1.9

< 2.3

< 2.0

< 1.3

< 3.7

< 2.6

< 2.5

< 2.2

< 6.0 CAWW-369 2/11/2020 229 +/- 85

< 3.9

< 10.2

< 5.2

< 2.8

< 8.1

< 5.9

< 5.3

< 3.9

< 6.4 CAWW-754 3/13/2020 306 +/- 88

< 4.5

< 9.7

< 3.0

< 6.1

< 4.2

< 4.1

< 9.2 CAWW-931 4/3/2020 324 +/- 90

< 3.3

< 7.2

< 2.8

< 4.7

< 7.4

< 4.4

< 3.6

< 4.1

< 7.9 CAWW-1513 5/11/2020 246 +/- 85

< 4.6

< 8.8

< 2.7

< 5.2

< 4.4

< 3.7

< 3.5

< 14.8 CAWW-2005 6/11/2020

< 156

< 1.4

< 2.0

< 1.5

< 1.7

< 2.8

< 2.9

< 2.6

< 1.9

< 2.8 CAWW-2534 7/21/2020 a

< 159

< 2.0

< 3.8

< 2.4

< 2.7

< 3.9

< 3.5

< 3.7

< 2.7

< 9.1 CAWW-3054 7/10/2020 b

< 156

< 1.9

< 7.0

< 1.5

< 1.3

< 3.3

< 4.9

< 1.6

< 1.5

< 13.5 CAWW-2869 8/12/2020

< 159

< 3.5

< 6.1

< 2.8

< 1.3

< 2.8

< 5.0

< 3.2

< 3.5

< 9.6 CAWW-3301 9/14/2020

< 159

< 2.3

< 3.9

< 1.9

< 1.7

< 3.6

< 3.9

< 2.9

< 2.6

< 6.2 CAWW-3968 10/14/2020 c

< 155

< 2.5

< 7.1

< 4.2

< 2.7

< 6.0

< 3.3

< 4.2

< 3.3

< 13.4 CAWW-4287 11/12/2020

< 157

< 2.5

< 9.4

< 2.2

< 3.2

< 2.8

< 3.6

< 4.4

< 3.6

< 8.9 CAWW-4581 12/11/2020

< 163

< 3.5

< 3.7

< 3.4

< 4.6

< 6.6

< 3.0

< 4.5

< 3.1

< 4.8 a Original sample broke during shipment; backup sample lost by the carrier; sample recollected.

b Backup sample previously thought to have been lost was subsequently found. (see footnote "a")

c Backup sample. Original sample damaged during shipment.

Location: CA-WWA-937B Location: CA-WWA-936

9-2 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-85 1/9/2020

< 158

< 2.7

< 4.1

< 3.5

< 4.0

< 8.4

< 1.7

< 3.5

< 6.1 CAWW-370 2/11/2020

< 154

< 3.2

< 4.1

< 2.9

< 3.2

< 5.9

< 3.8

< 4.1

< 3.1

< 3.4 CAWW-755 3/10/2020

< 151

< 3.6

< 11.9

< 4.5

< 3.3

< 7.8

< 4.9

< 4.7

< 5.8

< 4.7 CAWW-932 4/3/2020 172 +/- 83

< 1.8

< 3.3

< 1.1

< 1.7

< 2.2

< 4.3

< 2.3

< 2.6

< 3.6 CAWW-1510 5/11/2020

< 153

< 3.9

< 11.0

< 3.0

< 1.4

< 6.1

< 4.8

< 3.9

< 2.9

< 11.3 CAWW-2006 6/11/2020

< 156

< 4.5

< 6.9

< 2.2

< 4.8

< 8.9

< 3.0

< 5.0

< 4.3

< 6.3 CAWW-2435 7/10/2020

< 160

< 2.8

< 4.4

< 1.5

< 1.9

< 4.4

< 4.1

< 3.5

< 2.2

< 7.1 CAWW-2870 8/12/2020 187 +/- 85

< 1.8

< 4.1

< 2.0

< 1.7

< 3.6

< 2.0

< 1.5

< 6.4 CAWW-3302 9/14/2020 203 +/- 85

< 2.7

< 5.8

< 3.2

< 2.6

< 4.3

< 6.4

< 3.0

< 1.6

< 5.6 CAWW-3842 10/14/2020

< 157

< 2.5

< 3.7

< 1.5

< 6.3

< 3.7

< 3.9

< 2.1

< 8.7 CAWW-4289 11/12/2020 206 +/- 85

< 1.9

< 7.5

< 2.6

< 2.2

< 4.6

< 3.9

< 3.2

< 2.5

< 5.6 CAWW-4582 12/11/2020

< 163

< 3.9

< 5.3

< 1.7

< 2.1

< 6.8

< 3.9

< 3.1

< 1.5 CAWW-86 1/9/2020 270 +/- 88

< 1.9

< 2.6

< 2.2

< 1.3

< 3.5

< 3.0

< 2.3

< 1.3

< 5.0 CAWW-371 2/11/2020 645 +/- 105

< 2.1

< 5.3

< 2.0

< 1.9

< 2.6

< 2.4

< 2.6

< 2.5

< 4.4 CAWW-756 3/13/2020 987 +/- 117

< 2.3

< 4.5

< 3.8

< 1.4

< 5.2

< 2.6

< 3.9

< 3.7

< 6.4 CAWW-933 4/3/2020 779 +/- 110

< 2.3

< 4.1

< 1.6

< 2.1

< 2.8

< 3.6

< 2.8

< 2.7

< 6.7 CAWW-1514 5/11/2020 825 +/- 111

< 1.9

< 5.7

< 2.2

< 2.3

< 3.4

< 3.0

< 2.3

< 1.9

< 6.5 CAWW-2007 6/11/2020 889 +/- 116

< 3.7

< 6.5

< 2.4

< 2.6

< 7.7

< 5.9

< 3.6

< 3.1

< 6.6 CAWW-2436 7/14/2020 722 +/- 109

< 2.8

< 6.7

< 3.3

< 1.7

< 5.5

< 3.1

< 2.9

< 2.8

< 2.2 CAWW-2871 8/12/2020 701 +/- 109

< 2.8

< 7.3

< 2.5

< 3.3

< 4.7

< 3.3

< 2.7

< 2.2

< 9.9 CAWW-3303 9/14/2020 647 +/- 106

< 3.7

< 4.7

< 1.4

< 5.1

< 5.9

< 4.5

< 3.6

< 9.7 CAWW-3843 10/14/2020 578 +/- 102

< 2.5

< 6.7

< 2.1

< 3.3

< 7.1

< 4.9

< 4.3

< 3.0

< 12.9 CAWW-4290 11/12/2020 608 +/- 104

< 4.3

< 6.7

< 4.3

< 2.4

< 9.4

< 4.9

< 4.8

< 4.9

< 14.0 CAWW-4607 12/14/2020 551 +/- 112

< 8.2

< 1.2

< 7.3

< 17.0

< 9.9

< 8.0

< 8.4

< 9.9 CAWW-87 1/9/2020

< 158

< 1.4

< 1.7

< 1.5

< 3.6

< 3.8

< 2.8

< 2.3

< 5.9 CAWW-372 2/11/2020 161 +/- 82

< 4.9

< 6.7

< 4.5

< 3.5

< 9.1

< 4.6

< 4.8

< 3.8

< 7.7 CAWW-757 3/10/2020 258 +/- 86

< 1.7

< 5.0

< 3.7

< 2.9

< 7.0

< 2.9

< 4.0

< 3.9

< 3.4 CAWW-934 4/3/2020

< 157

< 2.8

< 8.1

< 3.1

< 2.2

< 6.4

< 4.5

< 3.6

< 3.5

< 4.6 CAWW-1512 5/11/2020 202 +/- 83

< 4.1

< 7.4

< 4.2

< 2.2

< 7.0

< 4.7

< 4.8

< 1.5

< 10.0 CAWW-2008 6/11/2020 159 +/- 84

< 4.2

< 8.6

< 4.8

< 2.5

< 5.1

< 5.3

< 4.7

< 4.9

< 7.2 CAWW-2437 7/10/2020

< 160

< 2.3

< 6.1

< 3.1

< 2.3

< 4.7

< 2.5

< 2.8

< 2.4

< 7.2 CAWW-2872 8/12/2020

< 159

< 3.5

< 5.1

< 2.1

< 3.2

< 4.2

< 3.8

< 3.3

< 13.5 CAWW-3304 9/14/2020

< 159

< 2.1

< 2.8

< 2.6

< 3.5

< 2.7

< 5.4

< 4.6

< 3.8

< 13.1 CAWW-3844 10/14/2020

< 157

< 3.9

< 4.2

< 2.4

< 2.8

< 4.2

< 3.9

< 3.8

< 3.6

< 5.8 CAWW-4291 11/12/2020

< 157

< 5.3

< 6.7

< 4.9

< 12.3

< 11.0

< 5.8

< 4.4

< 13.6 CAWW-4605 12/14/2020

< 166

< 3.4

< 5.5

< 4.2

< 3.2

< 5.7

< 4.0

< 4.6

< 4.4

< 4.2 Concentration (pCi/L) 3H Location: CA-WWA-937D Location: CA-WWA-939R Location: CA-WWA-940

9-3 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-88 1/9/2020

< 158

< 1.6

< 3.8

< 2.1

< 3.3

< 6.7

< 2.9

< 3.8

< 3.1

< 7.0 CAWW-373 2/11/2020 161 +/- 82

< 2.9

< 3.9

< 2.8

< 3.8

< 7.1

< 2.9

< 3.9

< 3.5

< 4.3 CAWW-758 3/10/2020 193 +/- 82

< 2.3

< 5.1

< 2.9

< 2.2

< 6.0

< 3.3

< 2.7

< 3.1

< 2.1 CAWW-935 4/3/2020

< 157

< 3.8

< 3.9

< 3.8

< 2.0

< 6.6

< 4.1

< 4.0

< 4.7

< 6.1 CAWW-1511 5/11/2020

< 153

< 4.2

< 5.6

< 3.1

< 2.6

< 4.6

< 3.5

< 3.8

< 3.4

< 9.0 CAWW-2009 6/11/2020 206 +/- 86

< 2.2

< 4.9

< 1.9

< 2.4

< 4.8

< 2.9

< 2.8

< 1.5

< 2.1 CAWW-2438 7/10/2020

< 160

< 2.7

< 5.3

< 2.8

< 1.8

< 3.9

< 2.8

< 2.5

< 2.9

< 3.1 CAWW-2873 8/12/2020

< 159

< 2.5

< 6.9

< 3.5

< 1.2

< 4.5

< 5.6

< 2.9

< 2.8

< 7.1 CAWW-3305 9/14/2020

< 159

< 2.5

< 7.9

< 3.2

< 2.5

< 7.0

< 4.5

< 4.2

< 3.6

< 10.8 CAWW-3845 10/14/2020

< 157

< 3.2

< 2.2

< 3.3

< 0.9

< 3.4

< 5.2

< 3.3

< 2.3

< 10.3 CAWW-4292 11/12/2020

< 157

< 3.7

< 11.2

< 3.6

< 4.1

< 6.3

< 7.7

< 3.8

< 4.1

< 8.7 CAWW-4606 12/14/2020

< 166

< 3.9

< 7.0

< 2.3

< 2.9

< 8.4

< 5.2

< 4.5

< 3.6

< 1.6 CAWW-82 1/9/2020

< 158

< 2.8

< 5.1

< 3.3

< 3.1

< 7.4

< 2.8

< 3.7

< 4.8

< 8.7 CAWW-367 2/11/2020 271 +/- 88

< 3.5

< 5.2

< 4.2

< 2.4

< 6.3

< 6.7

< 4.5

< 3.2

< 7.5 CAWW-751 3/13/2020 304 +/- 88

< 2.5

< 6.2

< 2.4

< 3.2

< 3.4

< 3.0

< 4.2

< 4.1

< 5.0 CAWW-929 4/3/2020 366 +/- 92

< 2.4

< 4.9

< 3.5

< 3.2

< 3.1

< 4.9

< 4.1

< 3.8

< 8.0 CAWW-1516 5/11/2020 282 +/- 87

< 3.5

< 7.8

< 2.9

< 1.4

< 5.0

< 3.3

< 3.6

< 3.0

< 9.6 CAWW-2003 6/11/2020 385 +/- 95

< 2.2

< 3.6

< 2.0

< 2.2

< 2.3

< 2.5 CAWW-2432 7/14/2020 466 +/- 98

< 2.0

< 5.1

< 3.6

< 3.3

< 5.9

< 3.5

< 2.5

< 6.0 CAWW-2866 8/12/2020 248 +/- 88

< 2.2

< 7.2

< 4.0

< 3.0

< 3.5

< 3.7

< 3.5

< 3.1

< 6.1 CAWW-3299 9/14/2020 549 +/- 102

< 2.3

< 4.2

< 2.4

< 3.7

< 7.5

< 5.4

< 5.0

< 4.5

< 10.7 CAWW-3838 10/14/2020 263 +/- 88

< 3.0

< 8.0

< 2.9

< 1.6

< 4.9

< 4.0

< 3.4

< 3.1

< 6.2 CAWW-4285 11/12/2020 2989 +/- 179 a

< 3.3

< 2.2

< 1.2

< 5.5

< 4.5

< 3.5

< 3.9

< 5.5 CAWW-4563 11/12/2020 3222 +/- 185 b

< 1.9

< 3.9

< 2.6

< 1.2

< 2.0

< 3.6

< 2.1

< 1.6

< 4.6 CAWW-4579 12/11/2020 794 +/- 121

< 2.3

< 3.4

< 3.0

< 2.2

< 4.2

< 1.8

< 3.4

< 3.7

< 2.7 a Recount 3077 +/- 182 pCi/L; reanalysis 2889 +/- 192 pCi/L. (CR#202007110). See Part I sect. 4.2 for discussion of elevated results.

b Backup sample. (CR#202007110). See Part I Section 4.2 for discussion of elevated results.

Location: CA-WWA-941 Concentration (pCi/L) 3H Location: CA-WWA-GWS

9-4 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-81 1/9/2020

< 158 NRa CAWW-946 4/3/2020

< 157 NRa CAWW-2421 7/11/2020

< 160 NRa CAWW-3837 10/14/2020

< 157 NRa CAWW-173 1/14/2020

< 156

< 2.7

< 5.2

< 1.6

< 3.1

< 3.3

< 5.0

< 3.4

< 3.5

< 5.9 CAWW-1174 4/15/2020

< 158

< 1.7

< 3.1

< 2.1

< 2.5

< 4.3

< 3.1

< 2.8

< 2.5 CAWW-2429 7/8/2020

< 160

< 2.4

< 5.8

< 1.9

< 1.3

< 2.1

< 2.8

< 2.3

< 2.7 CAWW-3716 10/6/2020

< 158

< 4.9

< 5.7

< 5.2

< 4.5

< 2.4

< 4.8

< 5.5

< 3.5

< 13.5 CAWW-186 1/21/2020

< 156

< 3.2

< 6.1

< 2.6

< 2.9

< 3.6

< 3.7

< 4.0

< 3.8

< 5.5 CAWW-1243 4/20/2020

< 156

< 4.2

< 5.0

< 3.8

< 1.5

< 2.7

< 4.8

< 5.0

< 5.5 CAWW-2422 7/9/2020

< 160

< 4.0

< 10.1

< 2.6

< 2.8

< 9.0

< 3.7

< 4.7

< 3.9

< 3.0 CAWW-3714 10/7/2020

< 158

< 1.7

< 6.7

< 4.4

< 2.3

< 6.9

< 4.5

< 3.2

< 11.1 CAWW-78 1/7/2020

< 158

< 2.2

< 2.5

< 3.1

< 2.4

< 2.9

< 3.8

< 2.0

< 2.4

< 5.0 CAWW-937 4/2/2020

< 157

< 2.4

< 6.7

< 3.4

< 2.3

< 8.0

< 5.8

< 3.9

< 3.7

< 5.2 CAWW-2427 7/9/2020

< 160

< 2.6

< 5.0

< 1.8

< 2.2

< 5.0

< 4.1

< 3.1

< 2.7

< 5.8 CAWW-3730 10/1/2020

< 157

< 2.9

< 5.8

< 2.8

< 2.2

< 4.4

< 4.2

< 3.1

< 9.4 CAWW-79 1/7/2020

< 158

< 1.5

< 3.5

< 2.3

< 3.0

< 2.6

< 3.5

< 2.5

< 2.8

< 6.5 CAWW-938 4/2/2020

< 157

< 2.3

< 5.2

< 2.7

< 1.9

< 6.0

< 2.7

< 2.8

< 3.7

< 3.6 CAWW-2424 7/9/2020

< 160

< 1.7

< 3.3

< 2.3

< 2.7

< 2.4

< 1.8

< 3.0

< 2.1

< 6.8 CAWW-3731 10/1/2020

< 157

< 2.6

< 4.4

< 2.0

< 3.2

< 4.4

< 4.7

< 3.3

< 3.6

< 9.9 CAWW-76 1/6/2020

< 158

< 2.8

< 6.5

< 2.7

< 2.1

< 6.5

< 4.7

< 3.0

< 3.2

< 6.1 CAWW-1075 4/14/2020

< 158

< 1.7

< 5.0

< 1.4

< 2.3

< 5.3

< 3.5

< 3.1

< 2.9

< 2.3 CAWW-2419 7/6/2020

< 160

< 4.3

< 7.9

< 3.7

< 3.0

< 4.7

< 3.8

< 4.1

< 3.5

< 8.1 CAWW-3970 10/19/2020

< 155

< 2.5

< 4.0

< 3.4

< 2.8

< 7.5

< 4.9

< 4.2

< 2.8

< 10.0 a "NR" = Not required. Analyses for gamma-emitting isotopes not required by the ODCM.

ISFSI Sump Location: CA-WWA-U1MW-001 3H Location: CA-WWA-U1MW-004 Location: CA-WWA-U1MW-002 Location: CA-WWA-U1MW-005 Location: CA-WWA-U1MW-006 Concentration (pCi/L)

9-5 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-202 1/27/2020

< 156

< 3.2

< 3.3

< 3.1

< 2.8

< 6.8

< 2.0

< 3.4

< 4.2

< 1.8 CAWW-1063 4/13/2020

< 158

< 2.9

< 3.2

< 4.6

< 3.4

< 8.7

< 6.6

< 4.2

< 3.2

< 3.1 CAWW-2528 7/17/2020

< 159

< 3.0

< 5.8

< 3.3

< 1.7

< 3.3

< 4.1

< 3.2

< 3.7

< 4.7 CAWW-3729 10/8/2020

< 157

< 8.3

< 16.8

< 9.8

< 7.5

< 17.9

< 14.0

< 8.6

< 7.4

< 14.1 CAWW-77 1/6/2020

< 158

< 3.8

< 5.2

< 3.3

< 3.4

< 5.6

< 3.6

< 3.9

< 3.6

< 6.1 CAWW-1074 4/14/2020

< 158

< 3.0

< 6.1

< 2.0

< 2.2

< 7.4

< 5.7

< 3.9

< 2.4

< 5.3 CAWW-2418 7/6/2020

< 160

< 3.4

< 5.9

< 2.5

< 3.0

< 3.1

< 2.8

< 3.2

< 3.4

< 4.2 CAWW-3969 10/19/2020

< 155

< 1.7

< 5.8

< 3.1

< 1.0

< 5.5

< 3.3

< 2.8

< 3.1

< 6.1 CAWW-179 1/21/2020

< 156

< 2.1

< 4.7

< 2.1

< 3.5

< 6.8

< 5.5

< 3.8

< 3.0

< 2.0 CAWW-1178 4/15/2020

< 158

< 3.1

< 5.1

< 4.9

< 1.6

< 7.6

< 6.8

< 4.5

< 5.5

< 4.8 CAWW-2431 7/8/2020

< 160

< 3.3

< 2.3

< 1.9

< 2.2

< 1.9

< 2.3

< 2.7

< 2.9

< 3.7 CAWW-3971 10/19/2020

< 155

< 3.1

< 7.7

< 3.0

< 3.8

< 6.9

< 5.5

< 3.1

< 2.8

< 14.9 CAWW-184 1/21/2020 311 +/- 90

< 4.7

< 9.1

< 4.6

< 3.4

< 4.6

< 3.9

< 5.5

< 4.0

< 6.3 CAWW-1038 4/10/2020 179 +/- 83

< 2.5

< 3.7

< 1.9

< 1.7

< 4.0

< 2.7

< 2.9

< 3.6 CAWW-2416 7/7/2020 205 +/- 86

< 2.0

< 1.7

< 1.9

< 2.5

< 2.8

< 3.0

< 3.1

< 2.6 CAWW-3712 10/7/2020 176 +/- 83

< 3.1

< 6.0

< 5.8

< 2.3

< 5.0

< 4.8

< 4.2

< 3.1

< 14.7 CAWW-80 1/7/2020

< 158

< 3.3

< 1.7

< 1.9

< 1.1

< 3.9

< 2.7

< 2.3

< 2.2

< 8.6 CAWW-939 4/2/2020

< 157

< 2.1

< 4.5

< 2.4

< 2.1

< 5.2

< 2.3

< 2.6

< 2.5

< 2.8 CAWW-2425 7/9/2020

< 160

< 3.1

< 6.0

< 2.6

< 1.5

< 6.3

< 4.6

< 2.9

< 2.7

< 4.1 CAWW-3722 10/5/2020

< 158

< 3.3

< 3.8

< 3.6

< 3.3

< 5.2

< 4.5

< 3.3

< 3.2

< 5.7 CAWW-180 1/20/2020

< 156

< 2.5

< 1.6

< 1.9

< 1.8

< 3.7

< 2.9

< 2.3

< 2.0

< 2.5 CAWW-1065 4/13/2020

< 158

< 3.0

< 6.3

< 2.5

< 3.5

< 5.0

< 4.6

< 3.8

< 4.9

< 5.2 CAWW-2525 7/17/2020

< 159

< 3.3

< 7.5

< 1.5

< 2.3

< 5.7

< 3.5

< 2.7

< 1.5

< 6.6 CAWW-3719 10/5/2020

< 158

< 2.2

< 2.5

< 3.0

< 2.7

< 3.4

< 3.6

< 2.6

< 1.9

< 11.0 Concentration (pCi/L)

Location: CA-WWA-U1MW-016 Location: CA-WWA-U1MW-013 Location: CA-WWA-U1MW-015 Location: CA-WWA-U1MW-010 Location: CA-WWA-U1MW-014 Location: CA-WWA-U1MW-012 3H

9-6 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-183 1/21/2020

< 156 NRa CAWW-1039 4/10/2020

< 158 NRa CAWW-2417 7/7/2020

< 160 NRa CAWW-3711 10/7/2020

< 158 NRa CAWW-181 1/21/2020

< 156 NRa CAWW-1040 4/10/2020

< 158 NRa CAWW-2420 7/7/2020

< 160 NRa CAWW-3709 10/7/2020

< 158 NRa CAWW-182 1/21/2020

< 156 NRa CAWW-1041 4/10/2020

< 158 NRa CAWW-2426 7/9/2020

< 160 NRa CAWW-3710 10/7/2020

< 158 NRa CAWW-175 1/16/2020 325 +/- 91 NRa CAWW-940 4/1/2020 233 +/- 86 NRa CAWW-2524 7/16/2020 420 +/- 98 NRa CAWW-3726 10/8/2020 257 +/- 87 NRa CAWW-4583 12/11/2020

< 163

< 3.6

< 9.6

< 4.7

< 3.6

< 6.1

< 2.7

< 5.0

< 4.3

< 4.8 CAWW-176 1/16/2020 188 +/- 84 NRa CAWW-941 4/1/2020 200 +/- 84 NRa CAWW-2523 7/16/2020 230 +/- 89 NRa CAWW-3727 10/8/2020 190 +/- 84 NRa CAWW-177 1/16/2020 311 +/- 90 NRa CAWW-942 4/1/2020 260 +/- 87 NRa CAWW-2522 7/16/2020 279 +/- 91 NRa CAWW-3724 10/8/2020 278 +/- 89 NRa a "NR" = Not required. Analyses for gamma-emitting isotopes not required by the ODCM.

Location: CA-WWA-U1MW-36 Location: CA-WWA-U1MW-31 Concentration (pCi/L) 3H Location: CA-WWA-U1MW-18 Location: CA-WWA-U1MW-19 Location: CA-WWA-U1MW-34 Location: CA-WWA-U1MW-20

9-7 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-178 1/16/2020

< 156 NRa CAWW-1077 4/14/2020

< 158 NRa CAWW-2423 7/9/2020

< 160 NRa CAWW-3720 10/5/2020

< 158 NRa CAWW-172 1/14/2020 183 +/- 84 NRa CAWW-1064 4/13/2020

< 158 NRa CAWW-2526 7/17/2020

< 159 NRa 10/7/2020 NSa CAWW-167 1/13/2020 331 +/- 91 NRa CAWW-943 4/1/2020 273 +/- 88 NRa CAWW-2521 7/16/2020 214 +/- 88 NRa CAWW-3725 10/8/2020

< 158 NRa CAWW-171 1/14/2020

< 156 NRa CAWW-1076 4/14/2020

< 158 NRa CAWW-2527 7/17/2020

< 159 NRa CAWW-3713 10/7/2020

< 158 NRa CAWW-187 1/22/2020

< 156 NRa CAWW-1177 4/15/2020 194 +/- 84 NRa CAWW-2529 7/17/2020 NSb 10/20/2020 NSb a "NR" = Not required. Analyses for gamma-emitting isotopes not required by the ODCM.

b "NS" = No data; see Part I Table 5.5, Listing of Missed Samples.

3H Location: CA-WWA-U1MW-39 Concentration (pCi/L)

Location: CA-WWA-U1MW-58 Location: CA-WWA-U1MW-59 Inside Old Blowdown Pipeline Location: CA-WWA-U1MW-47

9-8 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-169 1/13/2020

< 156 NRa CAWW-1180 4/16/2020

< 158 NRa CAWW-2533 7/15/2020 b

< 159 NRa CAWW-3058 7/15/2020 c

< 156 NRa CAWW-3715 10/6/2020

< 158 NRa CAWW-174 1/14/2020

< 156 NRa CAWW-1175 4/16/2020

< 158 NRa CAWW-2532 7/15/2020 b

< 159 NRa CAWW-3057 7/15/2020 c

< 156 NRa CAWW-3717 10/6/2020

< 156 NRa CAWW-168 1/13/2020

< 156 NRa CAWW-944 4/1/2020

< 157 NRa CAWW-2530 7/15/2020 b

< 159 NRa CAWW-3055 7/15/2020 c

< 156 NRa CAWW-3721 10/5/2020

< 158 NRa CAWW-170 1/14/2020

< 156

< 2.8

< 8.0

< 4.3

< 3.1

< 8.8

< 4.6

< 4.2

< 3.0

< 5.4 CAWW-1179 4/16/2020

< 158

< 3.4

< 6.3

< 3.8

< 3.9

< 9.3

< 3.8

< 4.9

< 2.1

< 6.2 CAWW-2531 7/15/2020 b

< 159

< 2.9

< 7.2

< 3.8

< 2.4

< 6.7

< 6.8

< 4.2

< 2.8

< 13.6 CAWW-3056 7/15/2020 c

< 156

< 1.5

< 3.5

< 2.1

< 1.2

< 2.9

< 2.8

< 1.4

< 13.0 CAWW-3723 10/1/2020

< 158

< 1.8

< 6.7

< 3.9

< 3.3

< 7.0

< 3.8

< 3.6

< 1.7

< 14.8 CAWW-166 1/13/2020

< 156 NRa CAWW-945 4/2/2020

< 157 NRa CAWW-2428 7/8/2020

< 160 NRa CAWW-3718 10/6/2020

< 158 NRa a "NR" = Not required. Analyses for gamma-emitting isotopes not required by the ODCM.

b Duplicate sample; primary sample misplaced by the shipping company.

c Backup sample previously thought to have been lost was subsequently found. (see footnote "a")

3H Location: CA-WWA-U2MW-5S Location: CA-WWA-U2MW-8 Location: CA-WWA-U2MW-10 Location: CA-WWA-U2MW-16 Location: CA-WWA-U2MW-2S Concentration (pCi/L)

9-9 Table 9. Wells (non-potable), analyses for tritium and gamma-emitting isotopes.

Collection Lab Code Date 54Mn 59Fe 58Co 60Co 65Zn 95ZrNb 134Cs 137Cs 140BaLa CAWW-45 1/3/2020

< 158

< 3.6

< 3.5

< 3.3

< 1.9

< 1.5

< 2.5

< 3.0

< 2.8

< 6.3 CAWW-973 4/2/2020

< 157

< 1.5

< 3.3

< 2.1

< 1.6

< 2.8

< 2.5

< 2.3

< 1.8

< 2.3 CAWW-2362 7/8/2020

< 160

< 2.6

< 7.3

< 2.1

< 2.8

< 3.9

< 2.8

< 3.0

< 3.2

< 1.6 CAWW-3680 10/8/2020

< 158

< 4.0

< 4.3

< 2.4

< 1.8

< 6.3

< 4.3

< 3.8

< 3.5

< 10.6 CAWW-46 1/3/2020

< 158

< 2.1

< 7.5

< 2.0

< 2.6

< 7.2

< 4.9

< 2.8

< 1.5

< 6.5 CAWW-974 4/2/2020

< 157

< 1.1

< 3.1

< 2.0

< 1.7

< 2.4

< 3.1

< 2.1

< 2.3

< 2.4 CAWW-2363 7/8/2020

< 160

< 2.1

< 2.2

< 1.3

< 2.3

< 2.0

< 2.6

< 2.5

< 2.1 CAWW-3681 10/8/2020

< 158

< 2.4

< 3.0

< 3.6

< 1.9

< 5.3

< 3.3

< 2.5

< 1.9

< 4.9 Location: CA-WWA-F-015 Concentration (pCi/L) 3H Location: CA-WWA-F-005

10-1 Table 10a. Bottom sediments, analyses for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/kg dry Location CA-AQS-A Lab Code Req. LLD 1773 3671 Date Collected K-40 13345 +/- 572 13693 +/- 761 Mn-54

< 25.9

< 29.1 Fe-59

< 41.5

< 99.7 Co-58

< 26.0

< 39.7 Co-60

< 18.3

< 18.0 Zr-Nb-95

< 40.4

< 49.6 Cs-134 150

< 13.9

< 20.1 Cs-137 180

< 25.2

< 29.0 Ba-La-140

< 99.3

< 394.6 Location CA-AQS-C Lab Code Req. LLD 1774 3672 Date Collected 05-26-20 10-06-20 K-40 14653 +/- 655 11778 +/- 558 Mn-54

< 24.8

< 20.1 Fe-59

< 65.9

< 61.8 Co-58

< 26.0

< 30.0 Co-60

< 14.8

< 14.5 Zr-Nb-95

< 41.9

< 81.8 Cs-134 150

< 17.5

< 13.1 Cs-137 180 42.6 +/- 20.4

< 21.6 Ba-La-140

< 108.8

< 230.2 CABS-CABS-10-06-20 CABS-05-26-20 CABS-

10-2 Table 10b. Shoreline sediments, analyses for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/kg dry Location CA-AQS-A Lab Code Req. LLD 1771 3669 Date Collected 05-26-20 10-06-20 K-40 12695 +/- 587 13308 +/- 616 Mn-54

< 19.9

< 25.3 Fe-59

< 47.2

< 86.5 Co-58

< 17.7

< 34.8 Co-60

< 17.1

< 23.1 Zr-Nb-95

< 33.7

< 87.9 Cs-134 150

< 12.3

< 17.4 Cs-137 180 28.0 +/- 14.9 23.7 +/- 14.2 Ba-La-140

< 83.7

< 498.0 Location CA-AQS-C Lab Code Req. LLD 1772 3670 Date Collected 05-26-20 10-06-20 K-40 13303 +/- 661 12260 +/- 640 Mn-54

< 24.3

< 32.5 Fe-59

< 54.5

< 122.1 Co-58

< 27.3

< 41.5 Co-60

< 20.4

< 17.8 Zr-Nb-95

< 41.6

< 82.8 Cs-134 150

< 20.5

< 19.6 Cs-137 180

< 27.8

< 23.8 Ba-La-140

< 80.5

< 435.8 CASS-CASS-CASS-CASS-

11-1 Table 11. Fish, analyses for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/kg wet Location CA-AQF-A Lab Code Req. LLD 1760 1761 1762 1763 1765 Date Collected Sample Type K-40 2757 +/- 380 3148 +/- 428 2879 +/- 415 3012 +/- 454 3085 +/- 525 Mn-54 130

< 13.6

< 19.0

< 13.3

< 13.5

< 15.8 Fe-59 260

< 21.2

< 62.2

< 37.3

< 43.4

< 41.6 Co-58 130

< 12.8

< 16.7

< 19.6

< 12.9

< 20.6 Co-60 130

< 13.9

< 6.6

< 13.1

< 9.4

< 22.7 Zn-65 260

< 28.2

< 37.6

< 35.6

< 26.5

< 62.8 Cs-134 130

< 13.1

< 15.6

< 17.2

< 18.4

< 24.4 Cs-137 150

< 13.4

< 13.5

< 14.4

< 12.1

< 24.5 Lab Code 3658 3659 3660 3661 3662 Date Collected Sample Type K-40 2921 +/- 393 2797 +/- 487 2701 +/- 417 3361 +/- 428 2489 +/- 402 Mn-54 130

< 12.4

< 25.7

< 15.6

< 22.7

< 25.8 Fe-59 260

< 85.6

< 71.0

< 41.8

< 70.0

< 98.0 Co-58 130

< 18.5

< 32.4

< 19.0

< 32.9

< 27.6 Co-60 130

< 18.6

< 17.8

< 10.5

< 14.3

< 19.4 Zn-65 260

< 46.1

< 43.7

< 26.7

< 30.7

< 54.9 Cs-134 130

< 21.5

< 23.3

< 15.5

< 20.0

< 22.7 Cs-137 150

< 18.8

< 22.1

< 9.3

< 14.3

< 23.4 CAF-CAF-CAF-CAF-10-06-20 Freshwater Drum (FD)

CAF-CAF-CAF-CAF-10-06-20 10-06-20 10-06-20 Common Carp (CC)

River Carpsucker (RC)

Smallmouth Buffalo (SB) 05-26-20 05-26-20 05-26-20 05-26-20 Common Carp

[CC]

River Carpsucker

[RC]

Smallmouth Buffalo [SB]

Freshwater Drum [FD]

10-06-20 Silver Carp (SC)

CAF-CAF-05-26-20 Silver Carp [SC]

11-2 Table 11. Fish, analyses for gamma-emitting isotopes.

Collection: Semiannually Units: pCi/kg wet Location CA-AQF-C Lab Code Req. LLD 1766 1767 1768 1769 1770 Date Collected Sample Type K-40 3576 +/- 438 2535 +/- 365 2759 +/- 429 3253 +/- 440 3315 +/- 491 Mn-54 130

< 17.2

< 18.2

< 13.3

< 8.7

< 19.1 Fe-59 260

< 38.6

< 38.2

< 44.9

< 50.9

< 74.1 Co-58 130

< 12.7

< 19.0

< 13.6

< 16.0

< 20.7 Co-60 130

< 13.3

< 14.0

< 15.4

< 20.4

< 9.0 Zn-65 260

< 42.4

< 50.2

< 34.2

< 42.2

< 22.7 Cs-134 130

< 15.1

< 15.6

< 16.9

< 20.3

< 22.5 Cs-137 150

< 12.2

< 17.3

< 17.7

< 14.4

< 18.8 Lab Code 3663 3664 3666 3667 3668 Date Collected Sample Type K-40 2647 +/- 427 2775 +/- 384 3563 +/- 448 2715 +/- 410 3241 +/- 563 Mn-54 130

< 12.7

< 13.8

< 21.3

< 18.4

< 24.1 Fe-59 260

< 70.0

< 35.7

< 61.5

< 53.3

< 99.4 Co-58 130

< 24.8

< 21.1

< 27.0

< 22.4

< 53.5 Co-60 130

< 12.7

< 11.4

< 15.3

< 17.1 Zn-65 260

< 30.2

< 14.5

< 28.7

< 32.0

< 81.6 Cs-134 130

< 17.1

< 15.3

< 19.4

< 13.4

< 30.9 Cs-137 150

< 17.6

< 15.9

< 19.2

< 14.4

< 19.8 Common Carp (SC)

Silver Carp (SC)

Freshwater Drum (FD) 10-06-20 10-06-20 10-06-20 10-06-20 10-06-20 River Carpsucker (RC)

Smallmouth Buffalo (SB)

CAF-CAF-05-26-20 Common Carp

[CC]

CAF-CAF-CAF-CAF-CAF-CAF-River CarpSucker

[RC]

Smallmouth Buffalo [SB]

Freshwater Drum [FD]

CAF-CAF-05-26-20 05-26-20 05-26-20 05-26-20 Silver Carp [SC]

12-1 Table 12a. Direct Radiation (quarterly exposure)

Location QTR 1 QTR 2 QTR 3 QTR 4 CA-IDM-1A 14.46 14.60 15.57 15.52 CA-IDM-3 15.68 16.13 16.13 16.79 CA-IDM-5 12.79 13.67 13.36 13.93 CA-IDM-6 15.10 14.81 14.98 15.67 CA-IDM-7 15.12 14.75 15.04 15.85 CA-IDM-9 14.39 13.77 14.75 14.79 CA-IDM-10 16.27 16.22 17.17 16.57 CA-IDM-11A 15.83 15.37 16.29 16.39 CA-IDM-14 15.10 14.57 15.14 15.68 CA-IDM-17 15.03 15.01 15.61 15.14 CA-IDM-18A 15.13 15.41 15.84 15.60 CA-IDM-20 15.56 15.22 16.74 16.56 CA-IDM-21 15.20 14.76 15.10 15.34 CA-IDM-22A 12.15 12.57 12.05 12.20 CA-IDM-23 15.68 16.17 16.01 16.23 CA-IDM-26 (C) 11.26 10.75 10.59 11.00 CA-IDM-27 (C) 16.74 16.31 16.45 17.13 CA-IDM-30A 15.29 14.69 15.55 15.46 CA-IDM-31A 16.43 15.53 15.82 16.08 CA-IDM-32 16.84 15.71 16.15 16.31 CA-IDM-32A 14.82 14.82 14.53 15.01 CA-IDM-33 15.29 15.02 15.42 15.82 CA-IDM-34 14.49 14.50 15.17 14.36 CA-IDM-35 13.96 14.15 14.07 14.47 CA-IDM-36 14.04 14.76 13.57 14.27 CA-IDM-37 14.81 14.72 15.58 14.63 CA-IDM-38 10.75 10.19 11.01 11.13 CA-IDM-39 14.47 13.96 15.34 15.27 CA-IDM-39A 14.38 14.99 15.05 15.83 CA-IDM-40 15.50 14.72 16.70 15.40 CA-IDM-41 16.21 13.50 14.53 15.19 CA-IDM-42 13.28 13.33 13.21 14.57 CA-IDM-43 16.11 14.87 15.00 15.82 CA-IDM-44 16.02 14.57 15.00 15.62 CA-IDM-45 13.71 13.62 13.60 14.27 CA-IDM-46 15.31 15.69 15.72 16.31 CA-IDM-47 14.53 14.81 15.05 15.75 CA-IDM-48 15.69 16.03 15.46 16.98 CA-IDM-49 14.46 13.29 NSa 13.78 CA-IDM-50 15.21 14.44 15.66 15.70 CA-IDM-51A 16.34 16.23 16.20 16.69 CA-IDM-52 15.73 14.79 15.61 16.49 CA-IDM-60 (C) 15.20 15.13 14.91 16.08 CA-IDM-61 13.73 14.07 14.05 15.03 a "NS" = No sample; see Part I Table 5.5, Listing of Missed Samples.

(C) Control Gamma Dose (mrem/90 days)

12-2 Table 12b. Direct Radiation Neutron Dose (quarterly exposure)

Location QTR 1 QTR 4 CA-IDM-60N (C) 0.0 +/- 1.5 0.0 +/- 0.9 0.0 +/- 1.4 0.0 +/- 2.1 CA-IDM-61N 0.0 +/- 1.4 0.0 +/- 1.8 0.0 +/- 1.6 0.0 +/- 1.1 CA-IDM-62N 0.0 +/- 2.0 0.0 +/- 1.1 0.0 +/- 1.8 0.0 +/- 0.8 CA-IDM-63N 0.0 +/- 1.4 0.0 +/- 0.9 0.0 +/- 1.8 0.0 +/- 0.9 CA-IDM-64N 0.0 +/- 0.7 0.0 +/- 0.8 0.0 +/- 1.5 0.0 +/- 1.1 (C) Control Neutron Dose (mrem/90 days)

QTR 2 QTR 3

ULNRC-06653, Annual Radiological Environmental Operating Report

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ULNRC-06653, Annual Radiological Environmental Operating Report

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1.0 INTRODUCTION

SUMMARY

6.0 REFERENCES

1.0 INTRODUCTION

SUMMARY

6.0 REFERENCES

1.0 INTRODUCTION

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