JAFP-21-0039, 2020 Annual Radiological Environmental Operating Report

2020 Annual Radiological Environmental Operating Report

ML21133A451
Person / Time
Site:	FitzPatrick
Issue date:	05/13/2021
From:	Reggie Sullivan Exelon Generation Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
JAFP-21-0039
Download: ML21133A451 (182)

Text

Exelon Generation ~ James A FitzPatrick NPP P.O Box 110 Lycoming, NY 13093 Richard M. Sullivan Regulatory Assurance Manager JAFP-21-0039 May 13, 2021 U.S. Nuclear Regulatory Commission ATTN : Document Control Desk Washington , DC 20555 James A. FitzPatrick Nuclear Power Plant Renewed Facility Operating License No. DPR-59 NRC Docket No. 50-333

Subject:

2020 Annual Radiological Environmental Operating Report

Dear Sir or Madam:

This letter transmits the James A. FitzPatrick Nuclear Power Plant's (JAF) Annual Radiological Environmental Operating Report, for the period of January 1, 2020, through December 31 , 2020. This document is submitted in accordance with the Reporting Requirements of the Technical Specifications Section 5.6.2, and Appendix H of the Technical Requirements Manual "Offsite Dose Calculation Manual (ODCM)", Part 1, Section 6.1 Annual Radiological Environmental Operating Report.

There are no new regulatory commitments contained in this letter.

If you have any questions concerning the enclosed report, please contact David Mayer, Chemistry Manager, at (315) 349-6499.

Sincerely,

\

Richard M. Sullivan Regulatory Assurance Manager WD/DM/mh

Enclosure:

2020 Annual Radiological Environmental Operating Report cc: Next Page

JAFP-21-0039 Page 2 of 2 cc:

NRC Regional Administrator, Region I NRC Resident Inspector NRC Project Manager Supervisor, Town of Scriba Route 8, Box 382 Oswego, NY 13126

JAFP-21-0039 Enclosure 2020 Annual Radiological Environmental Operating Report (179 Pages)

JAMES A. FITZPATRICK NUCLEAR POWER PLANT AND NINE MILE POINT NUCLEAR STATION 2020 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT

Intentionally left blank ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT January 1, 2020 - December 31, 2020 for JAMES A. FITZPATRICK NUCLEAR POWER PLANT Facility Operating License No. DPR-59, Docket No. 50-333 NINE MILE POINT NUCLEAR STATION UNIT 1 Facility Operating License No. DPR-63, Docket No. 50-220 NINE MILE POINT NUCLEAR STATION UNIT 2 Facility Operating License No. NPF-69, Docket No. 50-410 Exelon Generation Company, LLC

TABLE OF CONTENTS Page 1.0 PURPOSE ..............................................................................................................................1-1

2.0 INTRODUCTION

.................................................................................................................2-1 2.1 Program History ........................................................................................................2-1 2.2 Site Description .........................................................................................................2-2 2.3 Program Objectives ...................................................................................................2-2 3.0 PROGRAM DESCRIPTION ................................................................................................3-1 3.1 Sample Collection Methodology..............................................................................3-17 3.2 Analyses Performed..................................................................................................3-24 3.3 Sample Locations......................................................................................................3-25 3.4 Land Use Census ......................................................................................................3-42 3.5 Changes to the REMP Program................................................................................3-43 3.6 Deviations and Exceptions to the Program ...............................................................3-43 3.7 Statistical Methodology ............................................................................................3-44 3.8 Compliance with Required Lower Limits of Detection (LLD) ...............................3-47 3.9 Regulatory Limits .....................................................................................................3-49 4.0 SA MPLE

SUMMARY

TABLES IN BRANCH TECHNICAL POSITION FORMAT....4-1 5.0 DATA EVALUATION AND DISCUSSION .......................................................................5-1 5.1 Aquatic Program .........................................................................................................5-5 5.2 Terrestrial Program ...................................................................................................5-15 5.3 Conclusion ................................................................................................................5-34 5.4 References.................................................................................................................5-35 6.0 REPORT PERIOD ANALYTICAL RESULTS TABLES ..................................................6-1 7.0 HISTORICAL DATA TABLES ...........................................................................................7-1 8.0 QUALITY ASSURANCE/QUALITY CONTROL PROGRAM........................................8-1 8.1 Program Description ..................................................................................................8-1 8.2 Program Schedule ......................................................................................................8-2 8.3 Acceptance Criteria....................................................................................................8-2 8.4 Program Results Summary ........................................................................................8-4 9.0 ENVIRONMENTAL DOSIMETRY COMPANY ANNUAL QUALITY ASSURANCE STATUS REPORT.......................................................................................9-1 i

LIST OF TABLES Page Table 3.0-1 Required Sample Collection and Analysis JAFNPP................................................3-2 Table 3.0-2 Required Sample Collection and Analysis NMP Unit 1.........................................3-6 Table 3.0-3 Required Sample Collection and Analysis NMP Unit 2........................................3-10 Table 3.3-1 Environmental Sample Locations ...........................................................................3-26 Table 3.8-1 Required Detection Capabilities for Environmental Sample Analysis Lower Limit of Detection (LLD) ...........................................................................3-48 Table 4.0-1 Radiological Environmental Monitoring Program Annual Summary......................4-2 Table 6-1 Concentrations of Gamma Emitters in Shoreline Sediment Samples ...................6-2 Table 6-2 Concentrations of Gamma Emitters in Fish Samples.............................................6-3 Table 6-3 Concentrations of Tritium in Surface Water Samples............................................6-4 Table 6-4 Concentrations of Gamma Emitters in Surface Water Samples FitzPatrick............................................................................................................6-5 Oswego Steam Station ........................................................................................6-5 Nine Mile Point Unit 1 ........................................................................................6-6 Oswego City Water .............................................................................................6-6 Nine Mile Point Unit 2 ........................................................................................6-7 Table 6-5 Environmental Airborne Particulate Samples-Offsite Sample Locations Gross Beta Activity (Jan-Jun) ..................................................................6-8 (Jul-Dec) ..................................................................6-9 Table 6-6 Environmental Airborne Particulate Samples-Onsite Sample Locations Gross Beta Activity (Jan-Jun) ................................................................6-10 (Jul-Dec) ................................................................6-11 Table 6-7 Environmental Charcoal Cartridge Samples-Offsite Sample Locations I-131 Activity (Jan-Jun) ................................................................6-12 (Jul-Dec) ................................................................6-13 Table 6-8 Environmental Charcoal Cartridge Samples-Onsite Sample Locations I-131 Activity (Jan-Jun) ................................................................6-14 (Jul-Dec) ................................................................6-15 ii

LIST OF TABLES (Continued)

Page Table 6-9 Concentrations of Gamma Emitters in Quarterly Composites Air Particulate Samples............................................................................................6-16 Offsite Sample Locations - 1st, 2nd, 3rd,4th Qtrs ...............................................6-16 Onsite Sample Locations - 1st, 2nd, 3rd, 4th Qtrs ...............................................6-18 Table 6-10 Direct Radiation Measurement Results...................................................................6-19 Table 6-11 Concentrations of Iodine-131 and Gamma Emitters in Milk Samples Sample Location No. 55 ...................................................................................6-21 Sample Location No. 77 (Control) ...................................................................6-22 Table 6-12 Concentrations of Gamma Emitters in Food Product Samples............................ 6-23 Table 6-13 Milk Animal Census .................................................................................. 6-24 Table 6-14 JAF Residence Census ................................................................................6-25 Table 6-15 NMPNS Residence Census..........................................................................6-26 Historical Environmental Sample Data Table 7-1 Shoreline Sediment Control ..................................................................... 7-2 Table 7-2 Indicator ................................................................... 7-3 Table 7-3 Fish Control ..................................................................... 7-4 Table 7-4 Indicator ................................................................... 7-5 Table 7-5 Surface Water Control ..................................................................... 7-6 Table 7-6 Indicator ................................................................... 7-7 Table 7-7 Surface Water Tritium Control ..................................................................... 7-8 Table 7-8 Indicator ................................................................... 7-9 Table 7-9 Air Particulate Gross Beta Control ................................................................... 7-10 Table 7-10 Indicator ................................................................. 7-11 Table 7-11 Air Particulates Control ................................................................... 7-12 Table 7-12 Indicator ................................................................. 7-13 iii

LIST OF TABLES (Continued)

Page Historical Environmental Sample Data (Continued)

Table 7-13 Air Radioiodine Control .................................................................. 7-14 Table 7-14 Indicator ................................................................ 7-15 Table 7-15 Environmental TLD Control .................................................................. 7-16 Table 7-16 Site Boundary........................................................ 7-17 Table 7-17 Offsite Sectors....................................................... 7-18 Table 7-18 Special Interest...................................................... 7-19 Table 7-19 Onsite Indicator..................................................... 7-20 Table 7-20 Offsite Indicator .................................................... 7-21 Table 7-21 Milk Control .................................................................. 7-22 Table 7-22 Indicator ................................................................ 7-23 Table 7-23 Food Products Control .................................................................. 7-24 Table 7-24 Indicator ................................................................ 7-25 Table 7-25 NMPNS Groundwater Control .................................................................. 7-26 Table 7-26 Indicator ................................................................ 7-27 Table 7-27 JAFNPP Groundwater Control .................................................................. 7-28 Table 7-28 Indicator ................................................................ 7-29 Quality Assurance / Quality Control Program Interlaboratory Intercomparison Program Table 8-1 Eckert & Ziegler Analytics................................................................................ 8-6 Table 8-2 DOEs Mixed Analyte Performance Evaluation Program (MAPEP)................8-8 Table 8-3 ERA Environmental Radioactivity Cross Check Program..................................8-9 iv

LIST OF FIGURES Page Figure 3.3-1 New York State Map ...............................................................................................3-33 Figure 3.3-2 Off-Site Environmental Station and TLD Locations Map......................................3-34 Figure 3.3-3 Onsite Environmental Station and TLD Locations Map ........................................3-35 Figure 3.3-4 Milk and Surface Water Sample Locations Map ....................................................3-36 Figure 3.3-5 Food Product, Fish and Shoreline Sediment Sample Locations Map ....................3-37 Figure 3.3-6a James A. FitzPatrick Nearest Residence..................................................................3-38 Figure 3.3-6b Nine Mile Point Nuclear Station Nearest Residence..............................................3-39 Figure 3.3-7a James A. FitzPatrick On-Site Groundwater Monitoring Wells Map .....................3-40 Figure 3.3-7b Nine Mile Point Nuclear Power Station On-Site Groundwater Monitoring Wells Map ............................................................................................3-41 v

1.0 PURPOSE The Annual Radiological Environmental Operating Report is published in accordance with the James A. FitzPatrick Nuclear Power Plant (JAFNPP) Offsite Dose Calculation Manual (ODCM), Part I, Section 6.1., Section 6.6.2 Nine Mile Point 1 (NMP1) Technical Specifications and Section 5.6.2 of the Nine Mile Point Unit 2 (NMP2) Technical Specifications. The ODCM requires that the results from the annual Radiological Environmental Monitoring Program (REMP) be provided to the Nuclear Regulatory Commission by May 15th of each year.

This report describes the Radiological Environmental Monitoring Program (REMP), the implementation of the program, and the results obtained as required by the ODCM. The report also contains the analytical results tables, data evaluation, dose assessment, and data trends for each environmental sample media. Also included are results of the land use census, historical data, and the Environmental Laboratorys performance in the Quality Assurance Interlaboratory Comparison Program.

The REMP is a comprehensive surveillance program, which is implemented to assess the impact of site operations on the environment and compliance with 10 CFR 20, 40 CFR 190 and 10 CFR 72.

Samples are collected from the aquatic and terrestrial pathways applicable to the site. The aquatic pathways include Lake Ontario fish, surface water and lakeshore sediment. The terrestrial pathways include airborne particulate and radioiodine, milk, food products and direct radiation.

During 2020 there were 2,171 analyses performed on environmental media collected as part of the REMP. These results demonstrated that there is no significant or measurable radiological impact from the operation of the James A. FitzPatrick Nuclear Power Plant, Nine Mile Point Nuclear Unit 1 or Nine Mile Point Nuclear Unit 2. The 2020 results for all pathways sampled are consistent with the previous five-year historical results and exhibited no adverse trends.

In summary, the analytical results from the 2020 Radiological Environmental Monitoring Program demonstrate that the routine operation at James A. FitzPatrick, Nine Mile Point 1 and Nine Mile Point 2 had no significant or measurable radiological impact on the environment. The program continues to demonstrate that the dose to a member of the public, as a result of the operation of all sites, remains significantly below the federally required dose limits specified in 10 CFR 20, 40 CFR 190 and 10 CFR 72.

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2.0 INTRODUCTION

The James A. FitzPatrick Nuclear Power Plant, owned by Exelon FitzPatrick, LLC, and Nine Mile Point Unit 1 and Nine Mile Point Unit 2, owned by Nine Mile Point Nuclear Station, LLC are operated by the Nuclear Regulatory Commission (NRC) licensee, Exelon Generation Company, LLC. This report is submitted in accordance with James A. FitzPatrick Nuclear Power Plants Offsite Dose Calculation Manual, Part 1, Section 6.1 to License DPR-59 Docket No. 50-333, Appendix A (Technical Specifications) Section 6.6.2 to License DPR-63, Docket No. 50-220 for Nine Mile Point Nuclear Station Unit 1, and Appendix A (Technical Specifications) Section 5.6.2 to License NPF-69, Docket No. 50-410 for Nine Nile Point Nuclear Station, Unit 2. This report covers the calendar year 2020.

James A. FitzPatrick Nuclear Power Plant (JAFNPP), Nine Mile Point Unit 1 (NMP1) and Nine Mile Point Unit 2 (NMP2) Radiological Environmental Monitoring Program (REMP) requirements reside within each units Offsite Dose Calculation Manual (ODCM). Throughout this report, references will be made to the ODCM. This refers to each units ODCM.

2.1 PROGRAM HISTORY Environmental monitoring at the Nine Mile Point site has been ongoing since 1964. The program includes five years of pre-operational data, which was conducted prior to any reactor operations.

In 1968, the Niagara Mohawk Power Company began the required pre-operational environmental site testing program. This pre-operational data serves as a reference point to compare later data obtained during reactor operation. In 1969, the Nine Mile Point Unit 1 reactor, a 628 megawatt electric (MWe) Boiling Water Reactor (BWR) began full power operation. In 1975, the James A.

FitzPatrick Nuclear Power Plant, owned and operated at that time by the New York Power Authority, began full power operation. The FitzPatrick plant, an 892 MWe (rated) BWR, occupies the east sector of the Nine Mile Point site, approximately 0.57 miles east of Nine Mile Point Unit

1. In 1988, the Nine Mile Point Unit 2 reactor also owned and operated by Nine Mile Point Nuclear Station, LLC, began full power operation. This 1363 MWe BWR is located between the Nine Mile Point Unit 1 and FitzPatrick sites.

In 1985, the individual Plant Effluent Technical Specifications were standardized to the generic Radiological Effluent Technical Specifications, much of which was common to the two reactors, and subsequently Nine Mile Point Unit 2. Subsequent Technical Specification amendments relocated the REMP requirements to the ODCM for all three plants. Data generated by the Radiological Environmental Monitoring Program (REMP) is shared between each unit. On November 21, 2000 the ownership and operation of the James A. FitzPatrick Nuclear Power Plant was transferred from the New York Power Authority to Entergy Nuclear FitzPatrick, LLC and Entergy Nuclear Operations, Inc. The Facility Operating License No. DPR-59 and Docket No. 50-333 remained the same and in March 2017, ownership and operation of the James A. FitzPatrick Nuclear Power Plant was transferred to Exelon Generation Company, LLC. On November 7, 2001, the ownership of the Nine Mile Point Unit 1 and 2 facilities was transferred to Constellation Energy Nuclear Group (CENG). Nine Mile Point Nuclear Station, LLC, operates the two facilities. In March 2012 2-1

Constellation Energy merged with Exelon Generation and prior to March 25, 2014, Exelon Generation was an intermediate 50.01 percent parent company of CENG, which is the parent company owner of Nine Mile Point Nuclear Station, LLC. Following the transfer, Exelon Generation remains an intermediate parent company and became the co-licensee of Nine Mile Point Nuclear Station, LLC and the operator of NMP1 and NMP2. Exelon Generation Company, LLC took over ownership and operation of the Nine Mile Point Unit 1 and 2 facilities in 2014.

In summary, three Boiling Water Reactors, which together generate 2883 MWe, have operated collectively at the Nine Mile Point site since 1988. A large database of environmental results from the exposure pathways have been collected and analyzed to evaluate the potential impact from reactor operations.

2.2 SITE DESCRIPTION The Nine Mile Point (NMP) site is located on the southeast shore of Lake Ontario in the town of Scriba, approximately 6.2 miles northeast of the city of Oswego. The nearest metropolitan area is located approximately 36 miles southeast of the site. The reactors and support buildings occupy a small shoreline portion of the 1600-acre site. The land, soil of glacier deposits, rises gently from the lake in all directions. Oswego County is a rural environment, with about 15% of the land devoted to agriculture.

2.3 PROGRAM OBJECTIVES The objectives of the Radiological Environmental Monitoring Program (REMP) are to:

1. Measure and evaluate the effects of plant operation on the environs and to verify the effectiveness of the controls on radioactive material sources.

2. Monitor natural radiation levels in the environs of the NMP nuclear site.

3. Demonstrate compliance with the requirements of applicable federal regulatory agencies, site Technical Specifications and Offsite Dose Calculation Manual.

2-2

3.0 PROGRAM DESCRIPTION To achieve the objectives listed in Section 2.3, an extensive sampling and analysis program is conducted every year. The James A. FitzPatrick Nuclear Power Plant (JAFNPP), Nine Mile Point Unit 1 and Nine Mile Point Unit 2 Radiological Environmental Monitoring Program (REMP) consists of sampling and analysis of various media that include:

• Air

• Fish

• Food Products

• Milk

• Shoreline Sediment

• Surface Waters In addition, direct radiation measurements are performed using thermoluminescent dosimeters (TLDs). These sampling programs are outlined in Table 3.0-1, Table 3.0-2, and Table 3.0-3. The JAFNPP and Nine Mile Point Nuclear Station (NMPNS) REMP sampling locations are selected and verified by an annual Land Use Census. The accuracy and precision of the program is assured by participation in an Interlaboratory Comparison Quality Assurance Program (ICQAP). In addition to NMPNSs participation in the ICQAP, sample splits are provided to the New York State Department of Health for cross-checking purposes.

Sample collections for the radiological program are accomplished via a coordinated effort between site Chemistry and site Environmental. The site staff is assisted by a contracted environmental company, EA Science and Technology, Inc. (EA).

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TABLE 3.0-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS James A. FitzPatrick Nuclear Power Plant Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency AIRBORNE Radioiodine Samples from 5 locations: Continuous sample Radioiodine Canisters:

and Particulates operation with sample Analyze weekly for

a. 3 Samples from offsite locations in different sectors of the collection weekly or as I-131 highest calculated site average D/Q (based on all licensed site required by dust reactors) loading, whichever is Particulate Samples: Gross more frequent beta radioactivity following

b. 1 sample from the vicinity of a community having the highest filter change (b), composite calculated site average D/Q (based on all licensed site reactors) (by location) for gamma isotopic(c) quarterly (as a

c. 1 sample from a control location 9 to 20 miles distant and in the minimum) least prevalent wind direction(d)

DIRECT RADIATION(e) 32 stations with two or more dosimeters placed as follows: Quarterly Gamma dose monthly or quarterly

a. An inner ring of stations in the general area of the Site Boundary

b. An outer ring in the 4 to 5 mile range from the site with a station in each of the land based sectors. There are 16 land based sectors in the inner ring, and 8 land based sectors in the outer ring

c. The balance of the stations (8) are placed in special interest areas such as population centers, nearby residences, schools, and in 2 or 3 areas to serve as control stations 3-2

TABLE 3.0-1 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS James A. FitzPatrick Nuclear Power Plant Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency INGESTION Milk a. Samples from milch animals in 2 locations within 3.5 miles Twice per month, April Gamma isotopic and I-131 distant having the highest calculated site average D/Q. If there through December analysis twice per month are none, then 1 sample from milch animals in each of the 3 (samples will be when milch animals are on areas 3.5 to 5.0 miles distant having the highest calculated site collected in January pasture (April through average D/Q (based on all licensed site reactors)(h) through March if I-131 December); monthly (January is detected in November through March), if required(c)

b. 1 sample from milch animals at a control location (9 to 20 miles and December of the distant and in a less prevalent wind direction)(d) preceding year)

Fish a. 1 sample of 2 commercially or recreationally important species Twice per year Gamma isotopic(c) analysis of in the vicinity of a site discharge point edible portions.

b. 1 sample of 2 species (same as in a. above or of a species with similar feeding habits) from an area at least 5 miles distant from the site(d)

Food Products a. In lieu of the garden census as specified in Part 1, Section 5.2, Once during harvest Gamma isotopic(c) analysis of samples of at least 3 different kinds of broad leaf vegetation edible portions. (Isotopic to (such as vegetables) grown nearest each of two different offsite Include I-131) locations of highest predicted site average D/Q (based on all licensed site Reactors)

b. One (1) sample of each of the similar broad leaf vegetation grown at least 9.3 miles distant in a least prevalent wind direction sector (d) 3-3

TABLE 3.0-1 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS James A. FitzPatrick Nuclear Power Plant Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency WATERBORNE Surface(f) a. 1 sample upstream(d) Composite sample over a Gamma isotopic

b. 1 sample from the sites most downstream cooling water one month period(g) analysis monthly.

intake Composite for Tritium analysis quarterly(c)

Sediment from 1 sample from a downstream area with existing or potential Twice per year Gamma isotopic Shoreline recreational value analysis semi-annually(c) 3-4

NOTES FOR TABLE 3.0-1 (a) It is recognized that, at times, it may not be possible or practical to obtain samples of the media of choice at the most desired location or time. In these instances suitable alternative media and locations may be chosen for the particular pathway in question. Actual locations (distance and directions) from the site shall be provided in the Annual Radiological Environmental Operating Report. Calculated site averaged D/Q values and meteorological parameters are based on historical data (specified in the ODCM) for all licensed site reactors.

(b) Particulate sample filters should be analyzed for gross beta 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or more after sampling to allow for radon and thoron daughter decay. If gross beta activity in air particulate samples is greater than 10 times a historical yearly mean of control samples, gamma isotopic analysis shall be performed on the individual samples.

(c) Gamma isotopic analysis means the identification and quantification of gamma emitting radionuclides that may be attributable to the effluents from the plant.

(d) The purpose of these samples is to obtain background information. If it is not practical to establish control locations in accordance with the distance and wind direction criteria, other sites which provide valid background data may be substituted.

(e) One or more instruments, such as a pressurized ion chamber, for measuring and recording dose rate continuously may be used in place of, or in addition to, integrating dosimeters. For the purpose of this table, a thermoluminescent dosimeter may be considered to be one phosphor and two or more phosphors in a packet may be considered as two or more dosimeters. Film badges shall not be used for measuring direct radiation.

(f) The "upstream sample" shall be taken at a distance beyond significant influence of the discharge.

The "downstream sample" shall be taken in an area beyond, but near, the mixing zone, if practical.

(g) Composite samples should be collected with equipment (or equivalent) which is capable of collecting an aliquot at time intervals which are very short (e.g., hourly) relative to the compositing period (e.g.,

monthly) in order to ensure that a representative sample is obtained.

(h) A milk sampling location, as required in Table 5.1-1 of the ODCM, is defined as a location having at least 10 milking cows present at a designated milk sample location. It has been found from past experience, and as a result of conferring with local farmers, that a minimum of 10 milking cows is necessary to guarantee an adequate supply of milk twice per month for analytical purposes. Locations with less than 10 milking cows are usually utilized for breeding purposes which eliminates a stable supply of milk for samples as a result of suckling calves and periods when the adult animals are dry.

In the event that 3 milk sample locations cannot meet the requirement for 10 milking cows, then a sample location having less than 10 milking cows can be used if an adequate supply of milk can reasonably and reliably be obtained based on communications with the farmer.

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TABLE 3.0-2 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 1 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency AIRBORNE Radioiodine and Samples from 5 locations: Continuous sampler operation Radioiodine Canisters Particulates with sample collection weekly or Analyze once per week for as required by dust loading, I-131.

1) 3 samples from offsite locations in different sectors of whichever is more frequent.

the highest calculated site average D/Q (based on all site licensed reactors). Particulate Samplers Gross beta radioactivity following filter change (b).

2) 1 sample from the vicinity of an established year round community having the highest calculated site average Composite (by location) for D/Q (based on all site licensed reactors). gamma isotopic analysis (c) once per 3 months (as a

3) 1 sample from a control location 10-17 miles distant and minimum).

in a least prevalent wind direction (d).

Direct Radiation (e) 32 stations with two or more dosimeters to be placed as follows: an inner ring of stations in the general area of the Once per 3 months. Gamma dose once per 3 site boundary and an outer ring in the 4 to 5 mile range from months.

the site with a station in each land based sector (*). The balance of the stations should be placed in special interest areas such as population centers, nearby residences, schools and in 2 or 3 areas to serve as control stations.

(*)

At this distance, 8 wind rose sectors, (W, WNW, NW, NNW, N, NNE, NE, and ENE) are over Lake Ontario.

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TABLE 3.0-2 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 1 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency WATERBORNE Surface (f) 1) 1 sample upstream. Composite sample over 1 month Gamma isotopic analysis (c) period (g). once per month. Composite for once per 3 months tritium

2) 1 sample from the sites downstream cooling water analysis.

intake.

Sediment from Shoreline One sample from a downstream area with existing or Twice per year. Gamma isotopic analysis(c).

potential recreational value.

INGESTION

a. Milk 1) Samples from milk sampling locations in three Twice per month, April - Gamma isotopic (c) and I-131 locations within 3.5 miles distance having the highest December (samples will be analysis twice per month calculated site average D/Q. If there are none, then collected in January - March if when animals are on pasture one sample from milking animals in each of 3 areas I-131 is detected in November (April - December); once per 3.5 - 5.0 miles distant having the highest calculated and December of the preceding month at other times (January site average D/Q (based on all site licensed reactors). year). - March) if required.

2) One sample from a milk sampling location at a control location (9-20 miles distant and in a least prevalent wind direction) (d).

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TABLE 3.0-2 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 1 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency

b. Fish 1) One sample each of two commercially or Twice per year. Gamma isotopic analysis (c) recreationally important species in the vicinity of a on edible portions twice per plant discharge area (h). year.

2) One sample each of the same species from an area at least 5 miles distant from the site (d).

c. Food Products 1) Samples of three different kinds of broad leaf Once per year during harvest Gamma isotopic (c) analysis of vegetation (such as vegetables) grown nearest to season. edible portions (Isotopic to each of two different off-site locations of highest include I-131 or a separate I-calculated site average D/Q (based on all licensed 131 analysis may be site reactors). performed) once during the harvest season.

2) One sample of each of the similar broad leaf vegetation grown at least 9.3 - 20 miles distant in a least prevalent wind direction.

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NOTES FOR TABLE 3.0-2 (a) It is recognized that, at times, it may not be possible or practical to obtain samples of the media of choice at the most desired location or time. In these instances, suitable alternative media and locations may be chosen for the particular pathway in question and may be substituted. Actual locations (distance and directions) from the site shall be provided in the Annual Radiological Environmental Operating Report. Highest D/Q locations are based on historical meteorological data for all site licensed reactors.

(b) Particulate sample filters should be analyzed for gross beta 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or more after sampling to allow for radon and thoron daughter decay. If the gross beta activity in air is greater than 10 times a historical yearly mean of control samples, gamma isotopic analysis shall be performed on the individual samples.

(c) Gamma isotopic analysis means the identification and quantification of gamma-emitting radionuclides that may be attributable to the effluents from the facility.

(d) The purpose of these samples is to obtain background information. If it is not practical to establish control locations in accordance with the distance and wind direction criteria, other sites, such as historical control locations which provide valid background data may be substituted.

(e) One or more instruments, such as a pressurized ion chamber, for measuring and recording dose rate continuously, may be used in place of, or in addition to, integrating dosimeters. For the purpose of this table, a thermoluminescent dosimeter may be considered to be one phosphor, and two or more phosphors in a packet may be considered as two or more dosimeters. Film badges shall not be used for measuring direct radiation.

(f) The upstream sample should be taken at a distance beyond significant influence of the discharge. The downstream sample should be taken in an area beyond but near the mixing zone, if possible.

(g) Composite samples should be collected with equipment (or equivalent) which is capable of collecting an aliquot at time intervals which are very short (e.g. hourly) relative to the compositing period (e.g. monthly) in order to assure obtaining a representative sample.

(h) In the event commercial or recreational important species are not available as a result of three attempts, then other species may be utilized as available.

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TABLE 3.0-3 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 2 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency

a. Direct Radiation 32 routine monitoring stations (b), placed as follows: Once per 3 months Gamma dose: once per 3 months.

1) An inner ring of stations, one in each meteorological sector in the general area of the Site Boundary.

2) An outer ring of stations, one in each land base meteorological sector in the 4 to 5 mile (c) range from the site.

3) The balance of the stations should be placed in special interest areas such as population centers, nearby residences, schools, and in one of two areas to serve as control stations (d).

3 - 10

TABLE 3.0-3 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 2 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency AIRBORNE Radioiodine and Samples from 5 locations: Radioiodine Canister:

Particulates I-131 analysis weekly.

1. 3 samples from off-site locations close to the site Continuous sampler operation boundary (within one mile) in different sectors of the with sample collection weekly, Particulate Sampler:

highest calculated annual site average ground-level or more frequently if required by D/Q (based on all site licensed reactors)(e). dust loading. 1. Gross beta radioactivity analysis 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> following filter change(f) ,

2. 1 sample from the vicinity of an established year-

2. Gamma isotopic analysis round community having the highest calculated on each sample where annual site average ground-level D/Q (based on all gross beta activity is >10 site licensed reactors)(e).

times the previous yearly mean of control samples,

3. 1 sample from a control location at least 10 miles and distant and in a least prevalent wind direction (d). 3. Gamma isotopic analysis (g) of composite sample (by location) once per 3 months.

WATERBORNE

a. Surface 1. 1 sample upstream (d) (h). Composite sample over 1-month 1) Gamma isotopic period (i). analysis (g) once per month

2. 1 sample from the sites downstream cooling water

2) Tritium analysis of intake (h).

each composite once per 3 months.

3 - 11

TABLE 3.0-3 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 2 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency

b. Ground Samples from one or two sources if likely to be Grab sample once per 3 months. Gamma isotopic (g) and tritium analysis once per 3 affected (j).

months.

c. Drinking One sample each of one to three of the nearest water supplies When I-131 analysis is 1) I-131 analysis on that could be affected by its discharge (k). performed, a composite sample each composite when over a 2-week period(i); the dose calculated otherwise, a composite sample for the consumption monthly. of the water is greater than 1 mrem per year(l).

2) Composite for gross beta and gamma isotopic analyses (g) monthly.

3) Composite for tritium analysis once per 3 months.

d. Sediment from One sample from a downstream area with existing or Twice per year. Gamma isotopic analysis(g).

Shoreline potential recreational value.

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TABLE 3.0-3 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 2 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency INGESTION

a. Milk Twice per month, April - 1) Gamma isotopic (g)

1. Samples from Milk Sampling Locations in 3 December (m). and I-131 analysis locations within 3.5 miles (e).

twice per month when animals are on

2. If there are none, then 1 sample from Milk Sampling pasture (April -

Locations in each of three areas 3.5 - 5.0 miles (e).

December);

2) Gamma isotopic (g)

3. 1 sample from a Milk Sample Location at a control and I-131 analysis location 9 - 20 miles distant and in a least prevalent once per month at wind direction (d).

other times (m).

b. Fish 1. 1 sample each of two commercially or recreationally Twice per year. Gamma isotopic analysis (g) important species in the vicinity of a plant discharge on edible portions twice per area (n). year.

2. 1 sample of the same species in areas not influenced by station discharge (d).

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TABLE 3.0-3 (continued)

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM REQUIRED SAMPLE COLLECTION AND ANALYSIS Nine Mile Point Unit 2 Exposure Pathway and/or Number of Samples Sampling and Collection Type of Analysis and Sample and Sample Locations (a) Frequency (a) Frequency

c. Food Products 1) 1 sample of each principal class of food products At time of harvest (p). Gamma isotopic (g) and I-131 from any area that is irrigated by water in which analysis of each sample of liquid plant wastes have been discharged (o). edible portions.

2) Samples of 3 different kinds of broad leaf vegetation (such as vegetables) grown nearest to each of 2 different off-site locations of highest calculated annual site average D/Q (based on all licensed site Once per year during the harvest reactors)(e). season.

3) 1 sample of each of the similar broad leaf vegetation Once per year during the harvest grown at least 9.3 miles distant in a least prevalent season.

wind direction.

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NOTES FOR TABLE 3.0-3 (a) Specific parameters of distance and direction sector from the centerline of one reactor, and additional descriptions where pertinent, shall be provided for each and every sample location in Table 3.0-3. Refer to NUREG-0133, Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants, October 1978, and to Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979. Deviations are permitted from the required sampling schedule if specimens are unobtainable because of such circumstances as hazardous conditions, seasonal unavailability (which includes theft and uncooperative residents), or malfunction of automatic sampling equipment.

(b) One or more instruments, such as a pressurized ion chamber, for measuring and recording dose rate continuously, may be used in place of, or in addition to, integrating dosimeters. Each of the 32 routine monitoring stations shall be equipped with 2 or more dosimeters or with 1 instrument for measuring and recording dose rate continuously. For the purpose of this table, a thermoluminescent dosimeter (TLD) is considered to be one phosphor, two or more phosphors in a packet are considered as two or more dosimeters.

Film badges shall not be used as dosimeters for measuring direct radiation.

(c) At this distance, 8 wind rose sectors, (W, WNW, NW, NNW, N, NNE, NE, and ENE) are over Lake Ontario.

(d) The purpose of these samples is to obtain background information. If it is not practical to establish control locations in accordance with the distance and wind direction criteria, other sites, which provide valid background data, may be substituted.

(e) Having the highest calculated annual site average ground-level D/Q based on all site licensed reactors.

(f) Airborne particulate sample filters shall be analyzed for gross beta radioactivity 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or more after sampling to allow for radon and thoron daughter decay.

(g) Gamma isotopic analysis means the identification and quantification of gamma-emitting radionuclides that may be attributable to the effluents from the facility.

(h) The upstream sample shall be taken at a distance beyond significant influence of the discharge. The downstream sample shall be taken in an area beyond but near the mixing zone.

(i) In this program, representative composite sample aliquots shall be collected at time intervals that are very short (e.g., hourly) relative to the compositing period (e.g., monthly) in order to assure obtaining a representative sample.

(j) Groundwater samples shall be taken when this source is tapped for drinking or irrigation purposes in areas where the hydraulic gradient or recharge properties are suitable for contamination.

(k) Drinking water samples shall be taken only when drinking water is a dose pathway.

(l) Analysis for I-131 may be accomplished by Ge-Li analysis, provided that the lower limit of detection (LLD) for I-131 in water samples found on Table 3.8-1 can be met. Doses shall be calculated for the maximum organ and age group.

3 - 15

NOTES FOR TABLE 3.0-3 (continued)

(m) Samples will be collected January through March if I-131 is detected in November and December of the preceding year.

(n) In the event two commercially or recreationally important species are not available after three attempts of collection, then two samples of one species or other species not necessarily commercially or recreationally important may be utilized.

(o) Applicable only to major irrigation projects within 9 miles of the site in the general down current direction.

(p) If harvest occurs more than once/year, sampling shall be performed during each discrete harvest. If harvest occurs continuously, sampling shall be taken monthly. Attention shall be paid to including samples of tuberous and root food products.

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3.1 SAMPLE COLLECTION METHODOLOGY 3.1.1 SHORELINE SEDIMENTS Shoreline sediment is collected at one area of existing or potential recreational value. One sample is also collected from a location beyond the influence of the site. Samples are collected as surface scrapings to a depth of approximately one inch and then are placed in plastic bags, sealed and shipped to the lab for analysis. Sediment samples are analyzed for gamma emitting radionuclides.

Shoreline sediment sample locations are listed in Section 3.3, Table 3.3-1 and shown in Figure 3.3-5.

3.1.2 FISH Samples of available fish species that are commercially or recreationally important to Lake Ontario; such as Brown Trout, Lake Trout, Walleye, Chinook Salmon and Smallmouth Bass, are collected twice per year, once in the spring and again in the fall. Indicator samples are collected from a combination of the two onsite sample transects located offshore from the site. One set of control samples are collected at an offsite sample transect located offshore 8-10 miles west of the site. Available species are selected using the following guidelines:

1. A minimum of two species that are commercially or recreationally important are to be collected from each sample location. Samples selected are limited to edible and/or sport species when available.

2. Samples are composed of the edible portion only.

Selected fish samples are frozen immediately after collection and segregated by species and location. Samples are shipped frozen in insulated containers for analysis. Edible portions of each sample are analyzed for gamma emitting radionuclides.

Fish sample locations are listed in Section 3.3, Table 3.3-1 and shown in Figure 3.3-5.

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3.1.3 SURFACE WATER Surface water samples are taken from the respective inlet canals of the JAFNPP and NRCs Oswego Steam Station. The JAFNPP facility draws water from Lake Ontario on a continuous basis. This is used for the downstream or indicator sampling point for the Nine Mile Point site. The Oswego Steam Station inlet canal draws water from Lake Ontario at a point approximately 7.6 miles west of the site. This upstream location is considered a control location because of the distance from the site, as well as the result of the lake current patterns and current patterns from the Oswego River located nearby.

Samples from the JAFNPP facility are composited from automatic sampling equipment which discharges into a compositing tank. Samples are collected monthly from the compositor and analyzed for gamma emitters. Samples from the Oswego Steam Station are also obtained using automatic sampling equipment and collected in a holding tank.

Representative samples from this location are obtained weekly and are composited to form a monthly composite sample. The monthly samples are analyzed for gamma emitting radionuclides.

A portion of the monthly sample from each of the locations is saved and composited to form quarterly composite samples, which are analyzed for tritium.

In addition to the sample results for the JAFNPP and Oswego Steam Station collection sites, data is presented for the Nine Mile Point Unit 1 and Unit 2 facility inlet canal samples and from the City of Oswego drinking water supply. The latter three locations are not required by the ODCM. These locations are optional sample points, which are collected and analyzed to enhance the surface water sampling program. Monthly composite samples from these three locations are analyzed for gamma emitting nuclides, and quarterly composite samples are analyzed for tritium.

Surface water sample locations are listed in Section 3.3, Table 3.3-1 and shown in Figure 3.3-4.

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3.1.4 AIR PARTICULATE / IODINE The air sampling stations required by the ODCM are located in the general area of the site boundary. The sampling stations are sited within a distance of 0.2 miles of the site boundary in sectors with the highest calculated deposition factor (D/Q) based on historical meteorological data. These stations (R1, R2, R3, and R4) are located in the E, ESE, and SE sectors as measured from the center of the Nine Mile Point Nuclear Station Unit 2 Reactor Building. The ODCM also requires that one of the four air sampling stations be located in the vicinity of a year-round community. Station R4 fulfills this requirement and is located in the SE sector at a distance of 1.8 miles. A fifth station required by the ODCM is a control location designated as Station R5. Station R5 is located 16.2 miles from the site in the NE meteorological sector.

In addition to the five ODCM required locations, there are ten additional sampling stations.

Six of these sampling stations are located within the site boundary of NMPNS and JAFNPP and are designated as Onsite Stations D1, G, H, I, J, and K. One air sampling station is located offsite in the southwest sector in the vicinity of the City of Oswego and is designated as Station G Offsite. Three remaining air sampling stations are located in the ESE, SSE, and SSW sectors and range in distance from 7.1 to 9.0 miles. These are designated as Offsite Stations D2, E, and F respectively.

Each station collects airborne particulates using glass fiber filters (47 millimeter diameter) and radioiodine using charcoal cartridges (2x1 inch). The samplers run continuously and the charcoal cartridges and particulate filters are changed on a weekly basis. Sample volume is determined by use of calibrated gas flow meters located at the sample discharge. Gross beta analysis is performed on each particulate filter. Charcoal cartridges are analyzed for radioiodine using gamma spectral analysis. The particulate filters are composited quarterly by location and analyzed for gamma emitting radionuclides.

Air sampling station locations are listed in Section 3.3, Table 3.3-1 and shown in Figures 3.3-2 and 3.3-3.

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3.1.5 TLD (DIRECT RADIATION)

Thermoluminescent dosimeters (TLDs) are used to measure direct radiation (gamma dose) in the environment. Environmental TLDs are supplied and processed quarterly by Stanford Dosimetry. The vendor utilizes a Panasonic based system using UD-814 dosimeters, which contain three CaSO4 phosphor elements under 1000mg of lead and one lithium borate element.

1. Environmental TLDs Environmental TLDs are placed in five different geographical regions around site to evaluate effects of direct radiation as a result of plant operations. The following is a description of the five TLD geographical categories used in the NMPNS and JAFNPP Environmental Monitoring Program and the TLDs that make up each region:

TLD Geographical Category Description Onsite TLDs placed at various locations within the site boundary, with three exceptions, are not required by the ODCM. (TLD locations comprising this group are: 3, 4, 5, 6, 7*, 18*, 23*, 24, 25, 26, 27, 28, 29, 30, 31, 39, 47, 103, 106 and 107)

Site Boundary An inner ring of TLDs placed in the general area of the site boundary in each of the sixteen meteorological sectors. This category is required by the ODCM. (TLD locations comprising this group are: 7*, 18*, 23*, 75*, 76*, 77*, 78*, 79*, 80*, 81*,

82*, 83*, 84*, 85*, 86*, and 87*)

Offsite An outer ring of TLDs placed 4 to 5 miles from the site in each of the 8 land based meteorological sectors. This category is required by the ODCM. (TLD locations comprising this group are 88*,

89*, 90*, 91*, 92*, 93*, 94*, and 95*)

Special Interest TLDs placed in special interest areas of high population density and use. These TLDs are located at or near large industrial sites, schools, or nearby towns or communities. This category is required by the ODCM. (TLD locations comprising this group are: 9, 10, 11, 12, 13, 15*, 19, 51, 52, 53, 54, 55, 56*, 58*, 96*,

97*, 98*, 99, 100, 101, 102, 108, and 109)

Control TLDs placed in areas beyond significant influence of the site and plant operations. These TLDs are located to the SW, S and NE of the site at distances of 12.6 to 24.7 miles. This category is also required by the ODCM. (TLD locations comprising this group are 8*, 14*, 49*, 111, 113)

• TLD location required by the ODCM, TLD 98 required by NMP1 and NMP2 ODCM 3 - 20

Although the ODCM requires a total of 32 TLD stations; environmental TLDs are also placed at additional locations not required by the ODCM, within the Onsite, Special Interest and Control TLD categories to supplement the ODCM required Direct Radiation readings.

Two dosimeters are placed at each TLD monitoring location. The TLDs are sealed in polyethylene packages to ensure dosimeter integrity and placed in open webbed plastic holders and attached to supporting structures, such as utility poles.

Environmental TLD locations are listed in Section 3.3, Table 3.3-1 and show in Figures 3.3-2 and 3.3-3.

2. JAFNPP Independent Spent Fuel Storage Installation (ISFSI)

In order to provide adequate spent fuel storage capacity at JAFNPP, Entergy constructed an onsite Independent Spent Fuel Storage Installation (ISFSI). On April 25, 2002, the ISFSI facility was placed in service.

TLDs are used to monitor direct radiation levels in the vicinity of the ISFSI facility.

Twelve (12) TLD locations were established around the ISFSI pad on the perimeter fence.

Six (6) additional TLD locations are located at varying distances from the pad to determine dose rates at points of interest relative to the storage area and are designated as optional locations. Background data was collected starting in October, 2000 at eight of the TLD locations on the perimeter fence. The remaining locations were established in October 2001.

Two dosimeters are placed at each TLD monitoring location. The TLDs are sealed in polyethylene packages to ensure dosimeter integrity and placed in the field using a supporting structure such as a fence or other immovable object.

ISFSI TLD locations are listed in Section 3.3, Table 3.3-1.

3. NMPNS Independent Spent Fuel Storage Installation (ISFSI)

In order to provide adequate spent fuel storage capacity at NMP1 and NMP2, NMPNS constructed an ISFSI onsite west of NMP1. During 2012 the NMPNS ISFSI facility was placed into service.

TLDs are used to monitor direct radiation levels in the vicinity of the ISFSI facility. Sixteen (16) TLD locations were established around the site boundary. Background data has been collected from the initiation of the NMPNS REMP TLD program in 1985.

In addition, fourteen (14) Optically Stimulated Luminescence Dosimeters (OSDLs) are located around the ISFSI and in areas where personnel are assigned routine work activities.

3 - 21

These locations are designated as optional locations. Background data was collected starting in June 2011.

ISFSI OSLD and REMP TLD locations are listed in Section 3.3, Table 3.3-1 and REMP TLDs are shown in Figures 3.3-2 & 3.3-3.

3.1.6 MILK Milk samples are routinely collected from farms during the sampling year. These farms include one indicator location and one control location. Samples are normally collected April through December of the sample year. If plant related radionuclides are detected in samples in November and December of the previous year, milk collections are continued into the following year starting in January. If radionuclides are not detected in the November and December samples, then milk collections do not commence until April of the following sampling year. Milk samples were not collected in January through March of 2020 as there were no positive detections of radionuclides in samples collected during November and December of 2019.

The ODCM also requires that a sample be collected from a control location nine to twenty miles from the site and in a less prevalent wind direction. This location is in the south sector at a distance of 16 miles and serves as the control location.

Milk samples are collected in polyethylene bottles from a bulk storage tank at each sampled farm. Before the sample is drawn, the tank contents are agitated to assure a homogenous mixture of milk and butter fat. The samples are chilled, preserved, and shipped fresh to the analytical laboratory within thirty-six hours of collection in insulated shipping containers.

The milk sample locations are listed in Section 3.3, Table 3.3-1 and shown on Figure 3.3-4.

3.1.7 FOOD PRODUCTS (VEGETATION)

Food products are collected once per year during the late summer harvest season. A minimum of three different kinds of broad leaf vegetation (edible or inedible) are collected from three different indicator garden locations. Sample locations are selected from available gardens identified in the annual census that have the highest estimated deposition values (D/Q) based on historical site meteorological data. Control samples are also collected from available locations greater than 9.3 miles distance from the site in a less prevalent wind direction. Control samples are of the same or similar type of vegetation when available.

Food product samples are analyzed for gamma emitters using gamma isotopic analysis.

Food product locations are listed in Section 3.3, Table 3.3-1 and shown on Figure 3.3-5.

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3.1.8 GROUNDWATER MONITORING PROGRAM The Nuclear Energy Institute (NEI) Ground Water Protection Initiative was established to determine the potential impact Nuclear Power Plants may have on the surrounding environment due to unplanned releases of radioactive liquids. Under NEI 07-07, Industry Ground Water Protection Initiative Final Guidance Document, August 2007, ground water monitoring is accomplished through sampling of the water table around the plant and analyzing it for gamma emitters and tritium.

In addition to the groundwater monitoring requirements specified in the ODCM, NMPNS started monitoring groundwater in October 2005 and has been monitoring the plant dewatering systems as part of the response to Generic Letter 80-10 for several years.

JAFNPP has twenty-two groundwater wells. Groundwater Monitoring well samples collected in 2020 were analyzed annually for plant related gamma emitters, gross alpha and strontium, and quarterly for tritium.

NMPNS has nineteen groundwater wells and nine piezometers. NMPNS Groundwater Monitoring wells are analyzed annually for plant related gamma emitters, gross alpha, and strontium, and quarterly for tritium.

Ground water results are documented in the Annual Radiological Effluent Release Report.

Historical groundwater data is presented in Section 7, Historical Data Tables.

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3.2 ANALYSES PERFORMED Environmental sample analyses are performed by a contract laboratory. The following analyses were performed:

1. Air Particulate Filter - Gross Beta

2. Air Particulate Filter Composites - Gamma Spectral Analysis

3. Airborne Radioiodine - Gamma Spectral Analysis

4. Direct Radiation using Thermoluminescent Dosimeters (TLDs)

5. Fish - Gamma Spectral Analysis

6. Food Products (vegetation) - Gamma Spectral Analysis

7. Milk - Gamma Spectral Analysis and I-131

8. Shoreline Sediment - Gamma Spectral Analysis

9. Special Samples (soil, food, bottom sediment, etc.) - Gamma Spectral Analysis

10. Surface Water Monthly Composites - Gamma Spectral Analysis, I-131

11. Surface Water Quarterly Composites - Tritium

12. JAFNPP Groundwater Biennial, Annual and Quarterly Samples - Gamma Spectral Analysis, Gross Alpha, Strontium, and Tritium

13. NMPNS Groundwater Annual and Quarterly Samples - Gamma Spectral Analysis, Gross Alpha, Strontium, and Tritium 3 - 24

3.3 SAMPLE LOCATIONS This section provides maps illustrating sample locations. Sample locations referenced as letters and numbers on the report period data tables are consistent with designations plotted on the maps.

This section also contains an environmental sample location reference table (Table 3.3-1). This table contains the following information:

1. Sample Medium

2. Map Designation (this column contains the key for the sample location and is consistent with the designation on the sample location maps and on the sample results data tables)

3. Location Description

4. Degrees and Distance of the sample location from the site 3.3.1 LIST OF FIGURES Figure 3.3-1 New York State Map Figure 3.3-2 Off-Site Environmental Station and TLD Locations Map Figure 3.3-3 Onsite Environmental Station and TLD Locations Map Figure 3.3-4 Milk and Surface Water Sample Locations Map Figure 3.3-5 Food Product, Fish and Shoreline Sediment Sample Locations Map Figure 3.3-6a James A. FitzPatrick Nuclear Power Plant Nearest Residence Figure 3.3-6b Nine Mile Point Nuclear Station Nearest Residence Figure 3.3-7a James A. Fitzpatrick Nuclear Power Plant On-Site Groundwater Monitoring Wells Map Figure 3.3-7b Nine Mile Point Nuclear Station On-Site Groundwater Monitoring Wells and Unit 2 Storm Drain Outfall Map 3 - 25

TABLE 3.3-1 ENVIRONMENTAL SAMPLE LOCATIONS SAMPLE MAP FIGURE DEGREES & DISTANCE MEDIUM DESIGNATION NUMBER LOCATION DESCRIPTION (1)

Shoreline Sediment 05* Figure 3.3-5 Sunset Bay 84º at 1.2 miles 06 Figure 3.3-5 Langs Beach, Control 232° at 4.8 miles Fish 02* Figure 3.3-5 Nine Mile Point Transect 290° at 0.4 miles 03* Figure 3.3-5 FitzPatrick Transect 62° at 0.8 miles 00* Figure 3.3-5 Oswego Transect 237° at 5.9 miles Surface Water 03* Figure 3.3-4 FitzPatrick Inlet 53° at 0.6 miles 08* Figure 3.3-4 Oswego Steam Station Inlet (Control) 237° at 7.6 miles 09 Figure 3.3-4 NMP Unit 1 Inlet 319° at 0.3 miles 10 Figure 3.3-4 Oswego City Water 240° at 7.8 miles 11 Figure 3.3-4 NMP Unit 2 Inlet (Split intake with two locations) 336° at 0.3 miles 353° at 0.3 miles Air Radioiodine and R1* Figure 3.3-2 R1 Station, Nine Mile Point Road 92° at 1.8 miles Particulates R2* Figure 3.3-3 R2 Station, Lake Road 107° at 1.1 miles R3* Figure 3.3-3 R3 Station, Co. Rt. 29 133° at 1.4 miles R4* Figure 3.3-3 R4 Station, Village of Lycoming, Co. Rt. 29 145° at 1.8 miles R5* Figure 3.3-2 R5 Station, Montario Point Rd. (Control) 42° at 16.2 miles D1 Figure 3.3-3 D1 Onsite Station 71° at 0.3 miles G On Figure 3.3-3 G Onsite Station 245° at 0.7 miles H Figure 3.3-3 H Onsite Station 73° at 0.8 miles I Figure 3.3-3 I Onsite Station 95° at 0.8 miles J Figure 3.3-3 J Onsite Station 109° at 0.9 miles K Figure 3.3-3 K Onsite Station 132° at 0.5 miles G Off Figure 3.3-2 G Offsite Station, Saint Paul Street 226° at 5.4 miles D2 Figure 3.3-2 D2 Offsite Station, Rt. 64 118° at 9.0 miles E Figure 3.3-2 E Offsite Station, Rt. 4 162° at 7.1 miles F Figure 3.3-2 F Offsite Station, Dutch Ridge Road 192° at 7.6 miles Nearest Residence (NMP) Based on NMP Unit 2 Centerline - Refer to Figure 3.3-6b Nearest Residence (JAF) Based on JAF Centerline - Refer to Figure 3.3-6a (1) Degrees and distance based on Nine Mile Point Unit 2 Reactor Centerline rounded to the nearest 1/10 of a mile.

• Sample location required by ODCM 3 - 26

TABLE 3.3-1 (Continued)

ENVIRONMENTAL SAMPLE LOCATIONS SAMPLE MAP FIGURE DEGREES & DISTANCE MEDIUM DESIGNATION NUMBER LOCATION DESCRIPTION (1)

Thermoluminescent 3 Figure 3.3-3 D1 Onsite 71° at 0.3 miles Dosimeters (TLD) 4 Figure 3.3-3 D2 Onsite 143° at 0.4 miles 5 Figure 3.3-3 E Onsite 180° at 0.3 miles 6 Figure 3.3-3 F Onsite 213° at 0.5 miles 7* Figure 3.3-3 G Onsite 245° at 0.7 miles 8* Figure 3.3-2 R5 Offsite Control 42° at 16.2 miles 9 Figure 3.3-2 D1 Offsite 80° at 11.4 miles 10 Figure 3.3-2 D2 Offsite 118° at 9.0 miles 11 Figure 3.3-2 E Offsite 162° at 7.1 miles 12 Figure 3.3-2 F Offsite 192° at 7.6 miles 13 Figure 3.3-2 G Offsite 226° at 5.4 miles 14* Figure 3.3-2 DeMass Rd., SW Oswego - Control 227° at 12.5 miles 15* Figure 3.3-2 Pole 66, W. Boundary - Bible Camp 240° at 0.9 miles 18* Figure 3.3-3 Energy Info. Center - Lamp Post, SW 268° at 0.4 miles 19 Figure 3.3-2 East Boundary - JAF, Pole 9 83° at 1.4 miles 23* Figure 3.3-3 H Onsite 73° at 0.8 miles 24 Figure 3.3-3 I Onsite 95° at 0.8 miles 25 Figure 3.3-3 J Onsite 109° at 0.9 miles 26 Figure 3.3-3 K Onsite 132° at 0.5 miles 27 Figure 3.3-3 N. Fence, N. of Switchyard, JAF 60° at 0.4 miles 28 Figure 3.3-3 N. Light Pole,N. of Screenhouse, JAF 68° at 0.5 miles 29 Figure 3.3-3 N. Fence, N. of W. Side 65° at 0.5 miles 30 Figure 3.3-3 N. Fence, (NW) JAF 57° at 0.4 miles 31 Figure 3.3-3 N. Fence, (NW) NMP-1 279° at 0.2 miles 39 Figure 3.3-3 N. Fence, Rad. Waste-NMP-1 298° at 0.2 miles 47 Figure 3.3-3 N. Fence, (NE) JAF 69° at 0.6 miles 49* Figure 3.3-2 Phoenix, NY-Control 168° at 19.7 miles 51 Figure 3.3-2 Liberty & Bronson Sts., E of OSS 234° at 7.3 miles 52 Figure 3.3-2 E. 12th & Cayuga Sts., Oswego School 227° at 5.9 miles 53 Figure 3.3-2 Broadwell & Chestnut Sts. Fulton H.S. 183° at 13.7 miles (1) Degrees and distance based on Nine Mile Point Unit 2 Reactor Centerline rounded to the nearest 1/10 of a mile.

• Sample location required by ODCM 3 - 27

TABLE 3.3-1 (Continued)

ENVIRONMENTAL SAMPLE LOCATIONS SAMPLE MAP FIGURE DEGREES & DISTANCE MEDIUM DESIGNATION NUMBER LOCATION DESCRIPTION (1)

Thermoluminescent 54 Figure 3.3-2 Mexico High School 115° at 9.4 miles Dosimeters (TLD) 55 Figure 3.3-2 Gas Substation Co. Rt. 5-Pulaski 75° at 13.0 miles (Continued) 56* Figure 3.3-2 Rt. 104-New Haven Sch. (SE Corner) 124° at 5.2 miles 58* Figure 3.3-2 Co Rt. 1A-Novelis (E. of E. Entrance Rd.) 222° at 3.0 miles 75* Figure 3.3-3 Unit 2, N. Fence, N. of Reactor Bldg. 354° at 0.1 miles 76* Figure 3.3-3 Unit 2, N. Fence, N. of Change House 25° at 0.1 miles 77* Figure 3.3-3 Unit 2, N. Fence, N. of Pipe Bldg. 36° at 0.2 miles 78* Figure 3.3-3 JAF. E. of E. Old Lay Down Area 85° at 1.0 miles 79* Figure 3.3-3 Co. Rt. 29, Pole #63, 0.2 mi. S. of Lake Rd. 120° at 1.2 miles 80* Figure 3.3-3 Co. Rt. 29, Pole #54, 0.7 mi. S. of Lake Rd. 136° at 1.5 miles 81* Figure 3.3-3 Miner Rd., Pole #16, 0.5 mi. W. of Rt. 29 159° at 1.6 miles 82* Figure 3.3-3 Miner Rd., Pole # 1-1/2, 1.1 mi. W. of Rt. 29 180° at 1.6 miles 83* Figure 3.3-3 Lakeview Rd., Tree 0.45 mi. N. of Miner Rd. 203° at 1.2 miles 84* Figure 3.3-3 Lakeview Rd., N., Pole #6117, 200ft. N. of Lake Rd. 226° at 1.1 miles 85* Figure 3.3-3 Unit 1, N. Fence, N. of W. Side of Screen House 292° at 0.2 miles 86* Figure 3.3-3 Unit 2, N. Fence, N of W. Side of Screen House 311° at 0.1 miles 87* Figure 3.3-3 Unit 2, N. Fence, N. of E. Side of Screen House 333° at 0.1 miles 88* Figure 3.3-2 Hickory Grove Rd., Pole #2, 0.6 mi. N. of Rt. 1 97° at 4.5 miles 89* Figure 3.3-2 Leavitt Rd., Pole #16, 0.4 mi. S. of Rt.1 112° at 4.3 miles 90* Figure 3.3-2 Rt. 104, Pole #300, 150 ft. E. of Keefe Rd. 135° at 4.2 miles 91* Figure 3.3-2 Rt 51A, Pole #59, 0.8 mi. W. of Rt. 51 157° at 4.9 miles 92* Figure 3.3-2 Maiden Lane Rd., Power Pole, 0.6 mi. S. of Rt. 104 183° at 4.4 miles 93* Figure 3.3-2 Rt. 53 Pole 1-1, 120 ft. S. of Rt. 104 206° at 4.4 miles 94* Figure 3.3-2 Rt. 1, Pole #82, 250 ft. E. of Kocher Rd. (Co. Rt. 63) 224° at 4.4 miles 95* Figure 3.3-2 Novelis W access Rd., Joe Fultz Blvd, Pole #21 239° at 3.7 miles 96* Figure 3.3-2 Creamery Rd., 0.3 mi. S. of Middle Rd., Pole 1-1/2 199° at 3.6 miles 97* Figure 3.3-3 Rt. 29, Pole #50, 200ft. N. of Miner Rd. 145° at 1.8 miles 98* Figure 3.3-2 Lake Rd., Pole #145, 0.15 mi. E. of Rt 29 102° at 1.2 miles (1) Degrees and distance based on Nine Mile Point Unit 2 Reactor Centerline rounded to the nearest 1/10 of a mile.

• Sample location required by ODCM, TLD #98 is applicable to NMP1 and NMP2 ODCM 3 - 28

TABLE 3.3-1 (Continued)

ENVIRONMENTAL SAMPLE LOCATIONS MAP FIGURE DEGREES & DISTANCE SAMPLE MEDIUM DESIGNATION NUMBER LOCATION DESCRIPTION (1)

Thermoluminescent 99 Figure 3.3-2 NMP Rd., 0.4 mi. N. of Lake Rd., Env. Station R1 92° at 1.8 miles Dosimeters (TLD) 107° at 1.1 miles 100 Figure 3.3-3 Rt. 29 & Lake Rd., Env. Station R2 (Continued) 133° at 1.4 miles 101 Figure 3.3-3 Rt. 29, 0.7 mi. S. of Lake Rd., Env. Station R3 102 Figure 3.3-2 EOF, Rt. 176, E. Driveway, Lamp Post 175° at 11.9 miles 103 Figure 3.3-3 EIC, East Garage Rd., Lamp Post 268° at 0.4 miles 104 Figure 3.3-2 Parkhurst Rd., Pole #23, 0.1 mi. S. of Lake Rd. 102° at 1.4 miles 105 Figure 3.3-3 Lakeview Rd. Pole #36, 0.5 mi. S. of Lake Rd. 199° at 1.4 miles 106 Figure 3.3-3 Shoreline Cove, W. of NMP-1, Tree on W. Edge 274° at 0.3 miles 107 Figure 3.3-3 Shoreline Cove, W. of NMP-1, 30 ft SSW of #106 273° at 0.3 miles 108 Figure 3.3-3 Lake Rd., Pole #142, 300 ft E. of Rt. 29 S. 105° at 1.1 miles 109 Figure 3.3-3 Tree North of Lake Rd., 300 ft E. of Rt. 29 N 104° at 1.1 miles 111 Figure 3.3-2 Control, State Route 38, Sterling, NY 214° at 21.8 miles 112 Figure 3.3-2 EOF, Oswego County Airport Control 175° at 11.9 miles 113 Figure 3.3-2 Baldwinsville, NY 178° at 24.7 miles Cows Milk 97° at 8.7 miles 55** Figure 3.3-4 Indicator Location 77* Figure 3.3-4 Control Location 190° at 16.0 miles Food Products 144* Figure 3.3-5 Indicator Location - Whaley 139° at 1.6 miles 484* Figure 3.3-5 Indicator Location - OConnor 132° at 1.4 miles C2 (145)* Figure 3.3-5 Control Location - Flack 222° at 15.4 miles 69* Figure 3.3-5 Indicator Location - Lawton 123° at 2.3 miles 48(134)* Figure 3.3-5 Indicator Location - Kronenbitter 84° at 1.5 miles 240*(2) Figure 3.3-5 Indicator Location - Braves 96° at 1.8 miles (1) Degrees and distance based on Nine Mile Point Unit 2 Reactor Centerline (2) Food Product Location 240 required by JAFNPP ODCM

• Sample location required by ODCM

• • Optional sample 3 - 29

TABLE 3.3-1 (Continued)

ENVIRONMENTAL SAMPLE LOCATIONS SAMPLE LOCATION MEDIUM DESIGNATION FIGURE NUMBER LOCATION DESCRIPTION Thermoluminescent I-1* ISFSI West Fence, South End of Storage Pad Dosimeters (TLD) I-2* ISFSI West Fence, Center of Storage Pad JAFNPP ISFSI I-3* ISFSI West Fence, North End of Storage Pad I-4* ISFSI North Fence, West End of Storage Pad I-5* ISFSI North Fence, Center of Storage Pad I-6* ISFSI North Fence, East End of Storage Pad I-7* ISFSI East Fence, North End of Storage Pad I-8* ISFSI East Fence, Center of Storage Pad I-9* ISFSI East Fence, South End of Storage Pad I-10* ISFSI South Fence, East End of Storage Pad I-11* ISFSI South Fence, Center of Storage Pad I-12* ISFSI South Fence, West End of Storage Pad I-13** ISFSI Building and Grounds Garage, East of Pad I-14** ISFSI Tree ~100 yards South of Pad I-15** ISFSI Transmission Line Tower South of Pad at East /West Access Road I-16** ISFSI Perimeter Fence ~100 yards West of Pad on Pad Centerline I-17** ISFSI North Fence of Main Switch Yard on Pad Centerline I-18** ISFSI North Inner Perimeter Fence at Lake Shore on Pad Centerline Optically Stimulated 233** ISFSI West Northwest Fence Luminescence 234** ISFSI West Southwest Fence Dosimeters (OSLD)

NMPNS 235** ISFSI South Fence 236** ISFSI South Southeast Fence 237** ISFSI Southeast 238** ISFSI East Southeast Fence

• Sample location required by ODCM

• • Indicates Optional TLD location 3 - 30

TABLE 3.3-1 (Continued)

ENVIRONMENTAL SAMPLE LOCATIONS SAMPLE LOCATION DEGREES & DISTANCE MEDIUM DESIGNATION FIGURE NUMBER LOCATION DESCRIPTION (1)

Optically Stimulated 239** ISFSI East Fence Luminescence 240** ISFSI North East Fence Dosimeters (OSLD)

NMPNS (continued) 241** ISFSI North Fence 242** ISFSI North East Fence 243** ISFSI North Northwest Fence 244** ISFSI Northeast Fence 245** ISFSI Northeast Fence 246** ISFSI East Northeast Fence Groundwater MW 1, 5-13, 15-21 Figure 3.3-7b Down Gradient Wells - Indicators 258 to 78 at <0.3 miles NMPNS GMX-MW-1 Figure 3.3-7b Upland Well - Control 160 at 0.3 miles MW-14 Figure 3.3-7b Upland Well - Control 187 at 0.2 miles PZ PZ-8 Figure 3.3-7b Piezometer Wells North NMP1 Reactor Building PZ-9 Figure 3.3-7b Piezometer Wells - Control South NMP1 on Transformer Road (1) Degrees and distance based on Nine Mile Point Unit 2 Reactor Centerline

• • Indicate optional TLD/OSLD Locations 3 - 31

TABLE 3.3-1 (Continued)

ENVIRONMENTAL SAMPLE LOCATIONS SAMPLE LOCATION MEDIUM DESIGNATION FIGURE LOCATION DESCRIPTION JAFNPP MW-1 (A) Figure 3.3-7a Southwest of Reactor Building Ground Water MW-1 (B) Figure 3.3-7a Southwest of Reactor Building Monitoring Wells MW-2 (A) Figure 3.3-7a Northwest of Reactor Building MW-2 (B) Figure 3.3-7a Northwest of Reactor Building MW-3 (A) Figure 3.3-7a Northwest of Reactor Building MW-3 (B) Figure 3.3-7a Northwest of Reactor Building MW-4 (A) Figure 3.3-7a Northeast of Reactor Building MW-4 (B) Figure 3.3-7a Northeast of Reactor Building MW-5 Figure 3.3-7a Northwest Edge of Property MW-6 Figure 3.3-7a North / Northwest Edge of Property MW-7 Figure 3.3-7a North Edge of Property MW-8 Figure 3.3-7a North / Northeast Edge of Property MW-9 Figure 3.3-7a Northeast Edge of Property MW-10 (A) Figure 3.3-7a Southeast of Reactor Building MW-10 (B) Figure 3.3-7a Southeast of Reactor Building MW-13 Figure 3.3-7a West of Reactor Building MW-14 Figure 3.3-7a East of Reactor Building MW-15 Figure 3.3-7a South of Reactor Building MW-16 Figure 3.3-7a Northwest of Reactor Building MW-19 Figure 3.3-7a Northwest Edge of Property MW-20 Figure 3.3-7a Southwest Edge of Property (Control)

MW-21 Figure 3.3-7a South of Reactor Building (Outside protected area)

(Control) 3 - 32

3 - 33 3 - 34 3 - 35 3 - 36 3 - 37 3 - 38 3 - 39 3 - 40 3 - 41 3.4 LAND USE CENSUS The ODCM requires that a milch animal census and a residence census be conducted annually out to a distance of five miles. Milch animals are defined as any animal that is routinely used to provide milk for human consumption.

The milch animal census is an estimation of the number of cows and goats within an approximate ten-mile radius of the Nine Mile Point site. The census is done once per year in the summer. It is conducted by sending questionnaires to previous milch animal owners, and by road surveys to locate any possible new owners. In the event that questionnaires are not answered, the owners are contacted by telephone or in person. The Oswego County Cooperative Extension Service was also contacted to provide any additional information.

The residence census is conducted each year to identify the closest residence in each of the 22.5 degree meteorological sectors out to a distance of five miles. A residence, for the purposes of this census, is a residence that is occupied on a part time basis (such as a summer camp), or on a full time, year-round basis. Eight of the site meteorological sectors are over Lake Ontario; therefore, there are only eight sectors over land where residences are located within five miles.

In addition to the milch animal and residence census, a garden census was performed for the 2020 growing season. The census is conducted each year to identify the gardens nearest the site, within a 5-mile radius, that are to be used for the collection of food product samples.

3 - 42

3.5 CHANGES TO THE REMP PROGRAM Based upon the results of the 2020 Land Use Census, there were no changes to the 2020 sampling program.

3.6 DEVIATIONS AND EXCEPTIONS TO THE PROGRAM The noted exceptions to the 2020 sample program address only those samples or monitoring requirements which are required by the ODCM. This section satisfies the reporting requirements of Part I, Section 5.1.3 of the JAFNPP ODCM, Section D 6.9.1.d of the NMP1 ODCM and Section D 4.1.2 of the NMP2 ODCM.

3.6.1 ODCM Program Deviations The following are deviations from the program specified by the ODCM:

05/11/20-05/18/20 Station D1 On Air Particulate and Charcoal were unable to be analyzed due to the pump failure.

07/28/20-08/24/20 Station 55 On milk samples were unable to be collected due to the farm being transitioned to seasonal operation which requires the herd to be synchronized for calving and the milking cows are dried off for at least 60 days to build up energy/nutrients.

11/02/20-12/28/20 Station H On Air Particulate and Charcoal were unable to be analyzed due to an inoperable pump.

3.6.2 Air Sampling Station Operability Assessment The ODCM required air sampling program consists of 5 individual sampling locations. The collective operable time period for the air monitoring stations was 43,800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br /> out of a possible 43,800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br />. The air sampling availability factor for the report period was 100%.

Air sampling equipment found inoperable were returned to service. Identification of locations for obtaining replacement samples were not required.

3 - 43

3.7 STATISTICAL METHODOLOGY There are a number of statistical calculation methodologies used in evaluating the data from the environmental monitoring program. These methodologies include determination of standard deviation, the mean and associated error for the mean, and the lower limit of detection (LLD).

3.7.1 ESTIMATION OF THE MEAN AND STANDARD DEVIATION The mean (X) and standard deviation(s) were used in the reduction of the data generated by the sampling and analysis of the various media in the JAFNPP and Nine Mile Point Radiological Environmental Monitoring Programs (REMP). The following equations were utilized to compute the mean (X) and the standard deviation(s):

1. Mean n

X = Xi i =1 N

Where, X = estimate of the mean i = individual sample N, n = total number of samples with positive indications Xi = value for sample i above the lower limit of detection.

2. Standard Deviation 1/ 2 n

2 s= ( Xi X )

i =1 (N 1)

Where, X = mean for the values of X s = standard deviation for the sample population 3 - 44

3.7.2 ESTIMATION OF THE MEAN & THE ESTIMATED ERROR FOR THE MEAN In accordance with program policy, when the initial count indicates the presence of a plant related radionuclide(s) in a sample, two recounts of the sample may be required. When a radionuclide is positively identified in two or more counts, the analytical result for the radionuclide is reported as the mean of the positive detections and the associated propagated error for that mean. In cases where more than one positive sample result exists, the mean of the sample results and the estimated error for the mean are reported in the Annual Report.

The following equations were utilized to estimate the mean ( X ) and the associated propagated error.

1. Mean n

X = Xi i =1 N

Where, X = estimate of the mean i = individual sample N,n = total number of samples with positive indications Xi = value for sample i above the lower limit of detection

2. Error of the Mean n 1/ 2 2

ERROR MEAN = (ERROR) i =1 N

Where, ERROR MEAN = propagated error i = individual sample ERROR = 1 sigma* error of the individual analysis N, n = number of samples with positive indications

• Sigma ()

Sigma is the Greek letter used to represent the mathematical term Standard Deviation.

Standard Deviation is a measure of dispersion from the arithmetic mean of a set of numbers.

3 - 45

3.7.3 LOWER LIMIT OF DETECTION (LLD)

The LLD is the predetermined concentration or activity level used to establish a detection limit for the analytical procedures.

The LLDs are specified by the ODCM for radionuclides in specific media and are determined by taking into account the overall measurement methods. The equation used to calculate the LLD is:

4.66 S b LLD =

(E) (V ) (2.22) (Y ) exp (t )

Where:

LLD = the a priori lower limit of detection, as defined above (in picocuries per unit mass or volume)

Sb = the standard deviation of the background counting rate or of the counting rate of a blank sample, as appropriate (in counts per minute)

E = the counting efficiency (in counts per disintegration)

V = the sample size (in units of mass or volume) 2.22 = the number of disintegrations per minute per picocurie Y = the fractional radiochemical yield (when applicable)

= the radioactive decay constant for the particular radionuclide t = the elapsed time between sample collection (or end of the sample collection period) and time of counting The ODCM LLD formula assumes that:

1. The counting times for the sample and background are equal

2. The count rate of the background is approximately equal to the count rate of the sample In the ODCM program, LLDs are used to ensure that minimum acceptable detection capabilities are met with specified statistical confidence levels (95% detection probability with 5% probability of a false negative). Table 3.8-1 lists the ODCM program required LLDs for specific media and radionuclides as specified by the NRC. The LLDs actually achieved are routinely lower than those specified by the ODCM.

3 - 46

3.8 COMPLIANCE WITH REQUIRED LOWER LIMITS OF DETECTION (LLD)

JAF ODCM, Part 1, Table 5.1-3, NMP1 and NMP2 ODCM Tables D 4.6.20-1 and D 3.5.1-3, respectively, specifies the detection capabilities for environmental sample analysis (see report Table 3.8-1). JAF ODCM, Part 1, Section 6.1, NMP1 ODCM, Section D 6.9.1d and NMP2 ODCM, Section D 4.1.2 requires that a discussion of all analyses for which the required LLDs specified were not routinely achieved be included in the Annual Radiological Environmental Operating Report. Section 3.8 is provided pursuant to this requirement.

3.8.1 All sample analyses performed in 2020 as required by the ODCM, achieved the Lower Limit of Detection (LLD) as specified by JAF ODCM, Part 1, Table 5.1-3, NMP1 and NMP2 ODCM Tables D 4.6.20-1 and D 3.5.1-3, respectively. See Table 3.8-1 for required LLD values.

3 - 47

TABLE 3.8-1 REQUIRED DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSIS LOWER LIMIT OF DETECTION (LLD)

Airborne Particulate Food Water or Gases Fish Milk Products Sediment Analysis (pCi/l) 3 (pCi/m ) (pCi/kg, wet) (pCi/l) (pCi/kg, wet) (pCi/kg, dry)

Gross Beta 4 0.01 H-3 3000 (a)

Mn-54 15 130 Fe-59 30 260 Co-58, Co-60 15 130 Zn-65 30 260 Zr-95, Nb-95 15 I-131 15 (a) 0.07 1 60 Cs-134 15 0.05 130 15 60 150 Cs-137 18 0.06 150 18 80 180 Ba/La-140 15 15 (a) No drinking water pathway exists at the Nine Mile Point site under normal operating conditions due to the direction and distance of the nearest drinking water intake. Therefore, the LLD value of 3,000 pCi/liter is used for H-3 and the LLD value of 15 pCi/liter is used for I-131.

3 - 48

3.9 REGULATORY LIMITS Two federal agencies, the Nuclear Regulatory Commission and Environmental Protection Agency, have responsibility for regulations promulgated for protecting the public from radiation and radioactivity beyond the site boundary.

3.9.1 The Nuclear Regulatory Commission (NRC):

The NRC, in 10 CFR 20.1301, limits the levels of radiation in unrestricted areas resulting from the possession or use of radioactive materials such that they limit any individual to a dose of:

• less than or equal to 100 mrem per year to the total body.

In addition to this dose limit, the NRC has established design objectives for nuclear plant licensees. Conformance to these guidelines ensures that nuclear power reactor effluents are maintained as far below the legal limits as is reasonably achievable.

The NRC, in 10 CFR 50, Appendix I, establishes design objectives for the dose to a member of the general public from radioactive material in liquid effluents released to unrestricted areas to be limited to:

• less than or equal to 3 mrem per year to the total body, or

• less than or equal to 10 mrem per year to any organ.

The air dose due to release of Noble gases in gaseous effluents is restricted to:

• less than or equal to 10 mrad per year for gamma radiation, or

• less than or equal to 20 mrad per year for beta radiation.

The dose to a member of the general public from Iodine-131, tritium, and all particulate radionuclides with half-lives greater than 8 days in gaseous effluents is limited to:

• less than or equal to 15 mrem per year to any organ.

3 - 49

The NRC, in 10 CFR 72.104(a), establishes criteria for radioactive materials in effluents and direct radiation from an Independent Spent Fuel Storage Installation (ISFSI).

During normal operations and anticipated occurrences, the annual dose equivalent to any real individual who is located beyond the controlled area must not exceed:

• 25 mrem per year to the total body,

• 75 mrem per year to the thyroid, and

• 25 mrem per year to any other organ as a result of:

1. Planned discharges of radioactive material, radon and its decay products excepted, to the environment,

2. Direct radiation from ISFSI, and

3. Any other radiation from uranium fuel cycle operations in the region.

3.9.2 Environmental Protection Agency (EPA)

The EPA, in 40 CFR 190.10, Subpart B, sets forth the environmental standards for the uranium fuel cycle. During normal operation, the annual dose to any member of the public from the entire uranium fuel cycle shall be limited to:

• less than or equal to 25 mrem per year to the total body,

• less than or equal to 75 mrem per year to the thyroid, and

• less than or equal to 25 mrem per year to any other organ 3 - 50

4.0 SAMPLE

SUMMARY

TABLES IN BRANCH TECHNICAL POSITION FORMAT All sample data is summarized in table form. The tables are titled Radiological Environmental Monitoring Program Annual Summary and use the following format as specified in the NRC Branch Technical Position:

Column

1. Sample Medium

2. Type and Number of Analyses Performed

3. Required Lower Limits of Detection (LLD), see Section 3.8, Table 3.8-1. This wording indicates that inclusive data is based on 4.66 Sb (sigma) of background (See Section 3.7).

4. The mean and range of the positive measured values of the indicator locations.

5. The mean, range, and location of the highest indicator annual mean. Location designations are keyed to Table 3.3-1 in Section 3.3.

6. The mean and range of the positive measured values of the control locations.

7. The number of non-routine reports sent to the Nuclear Regulatory Commission.

NOTE: Only positive measured values are used in statistical calculations.

4-1

TABLE 4.0-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

JANUARY - DECEMBER 2020*

INDICATOR LOCATION (b) OF HIGHEST NUMBER OF TYPE AND NUMBER LOCATIONS: MEAN ANNUAL MEAN; LOCATION & CONTROL LOCATION: NONROUTINE MEDIUM (UNITS) OF ANALYSES* LLD(a) (f)/RANGE MEAN (f)/RANGE MEAN (f)/RANGE REPORTS Shoreline Sediment GSA (4):

(pCi/kg-dry) (Gamma-Spectrum Analysis)

Cs-134 150 <LLD <LLD <LLD 0 Cs-137 180 <LLD <LLD <LLD 0 Fish GSA (21):

(pCi/kg-wet)

Mn-54 130 <LLD <LLD <LLD 0 Co-58 130 <LLD <LLD <LLD 0 Fe-59 260 <LLD <LLD <LLD 0 Co-60 130 <LLD <LLD <LLD 0 Zn-65 260 <LLD <LLD <LLD 0 Cs-134 130 <LLD <LLD <LLD 0 Cs-137 150 <LLD <LLD <LLD 0 4-2

TABLE 4.0-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

JANUARY - DECEMBER 2020*

INDICATOR LOCATION (b) OF HIGHEST NUMBER OF TYPE AND NUMBER LOCATIONS: MEAN ANNUAL MEAN; LOCATION & CONTROL LOCATION: NONROUTINE MEDIUM (UNITS) OF ANALYSES* LLD(a) (f)/RANGE MEAN (f)/RANGE MEAN (f)/RANGE REPORTS Surface Water H-3 (8): 3000(c) <LLD <LLD <LLD 0 (pCi/liter)

GSA (24):

Mn-54 15 <LLD <LLD <LLD 0 Fe-59 30 <LLD <LLD <LLD 0 Co-58 15 <LLD <LLD <LLD 0 Co-60 15 <LLD <LLD <LLD 0 Zn-65 30 <LLD <LLD <LLD 0 Zr-95 15 <LLD <LLD <LLD 0 Nb-95 15 <LLD <LLD <LLD 0 I-131 15(c) <LLD <LLD <LLD 0 Cs-134 15 <LLD <LLD <LLD 0 Cs-137 18 <LLD <LLD <LLD 0 Ba/La-140 15 <LLD <LLD <LLD 0 TLD (mrem per Gamma Dose (128) (i) (d) 6.0 (116/116) TLD #85 (g) 9.9 (4/4) 5.5 (12/12) 0 standard month) 4.5-10.9 0.2 MILES at 292° 9.3-10.9 4.8-6.2 4-3

TABLE 4.0-1 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM ANNUAL

SUMMARY

JANUARY - DECEMBER 2020*

INDICATOR LOCATION (b) OF HIGHEST NUMBER OF TYPE AND NUMBER LOCATIONS: MEAN ANNUAL MEAN; LOCATION & CONTROL LOCATION: NONROUTINE MEDIUM (UNITS) OF ANALYSES* LLD(a) (f)/RANGE MEAN (f)/RANGE MEAN (f)/RANGE REPORTS Air Particulates Gross Beta (260): 10 16.2 (208/208) R-4 16.5 (52/52) 16.0 (52/52) 0 (10E-3 pCi/m3) 7.8-30.4 1.8 MILES at 145 7.8-26.4 8.7-26.4 I-131 (260): 70 <LLD <LLD <LLD 0 GSA (20):

Cs-134 50 <LLD <LLD <LLD 0 Cs-137 60 <LLD <LLD <LLD 0 Milk GSA (34): (e) (h)

(pCi/liter)

Cs-134 15 <LLD <LLD <LLD 0 Cs-137 18 <LLD <LLD <LLD 0 Ba/La140 15 <LLD <LLD <LLD 0 I-131 (34):

I-131 1 <LLD <LLD <LLD 0 Food Products GSA (12):

(pCi/kg-wet)

I-131 60 <LLD <LLD <LLD 0 Cs-134 60 <LLD <LLD <LLD 0 Cs-137 80 <LLD <LLD <LLD 0 4-4

TABLE NOTES:

• = Data for Table 4.0-1 is based on ODCM required samples only.

(a) = LLD values as required by the ODCM. LLD units are specified in the medium column.

(b) = Location is distance in miles and direction in compass degrees based on NMP-2 reactor center-line rounded to the nearest 1/10 mile. Units in this column are specified in medium column.

(c) = The ODCM specifies an I-131 and tritium LLD value for surface water analysis (non-drinking water) of 15 pCi/liter and 3000 pCi/liter respectively.

(d) = The ODCM does not specify a particular LLD value to environmental TLDs.

(e) = The ODCM criteria for indicator milk sample locations include locations within 5.0 miles of the site. There are no milk sample locations within 5.0 miles of the site. Therefore, the only sample location required by the ODCM is the control location. There was one optional location for 2020. The data is being included in the summary.

(f) = Fraction of number of detectable measurements to total number of measurements. Mean and range results are based on detectable measurements only.

Example: Mean of detectable measurements (detectable measurements/total measurements)

Minimum detectable-Maximum detectable (g) = This dose is not representative of doses to a member of the public since this area is located near the north shoreline which is in close proximity to the generating facility and is not accessible to members of the public (See Section 5.2.4, TLDs).

(h) = Data includes results from optional samples in addition to samples required by the ODCM.

(i) = Indicator TLD locations are: #7, 15, 18, 23, 56, 58, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, and 98**. Control TLDs are TLDs located beyond the influence of the site (TLD #: 8, 14 and 49).

• • - NMP1 and NMP2 additional TLD 4-5

5.0 DATA EVALUATION AND DISCUSSION Introduction Each year the results of the annual Radiological Environmental Monitoring Program (REMP) are evaluated considering plant operations at the site, the natural processes in the environment, and the archive of historical environmental radiological data. A number of factors are considered in the course of evaluating and interpreting the annual environmental radiological data. This interpretation can be made using several methods including trend analysis, population dose estimates, risk estimates to the general population based on significance of environmental concentrations, effectiveness of plant effluent controls, and specific research areas. The report not only presents the data collected during the 2020 sample program but also assesses the significance of radionuclides detected in the environment. It is important to note that detection of a radionuclide is not, of itself, an indication of environmental significance. Evaluation of the impact of the radionuclide in terms of potential increased dose to man, in relation to natural background, is necessary to determine the true significance of any detection.

Units of Measure Some of the units of measure used in this report are explained below.

Radioactivity is the number of atoms in a material that decay per unit of time. Each time an atom decays, radiation is emitted. The curie (Ci) is the unit used to describe the activity of a material and indicates the rate at which the atoms are decaying. One curie of activity indicates the decay of 37 billion atoms per second.

The mass, or weight, of radioactive material that would result in one curie of activity depends on the disintegration rate or half-life. For example, one gram of radium-226 contains one curie of activity, but it would require about 1.5 million grams of natural uranium to equal one curie. Radium-226 is more radioactive than natural uranium on a weight or mass basis.

Smaller units of the curie are used in this report. Two common units are the microcurie (µCi),

which is one millionth (0.000001) of a curie, and the picocurie (pCi), which is one trillionth (0.000000000001) of a curie. The picocurie (pCi) is the unit of radiation that is routinely used in this report.

Dose/Dose to Man The dose or dose equivalent, simply put, is the amount of ionizing energy deposited or absorbed in living tissue. The amount of energy deposited or ionization caused is dependent on the type of radiation. For example, alpha radiation can cause dense localized ionization that can be up to 20 times the amount of ionization for the same energy imparted as from gamma or x-rays. Therefore, a quality factor must be applied to account for the different ionizing capabilities of various types of radiation. When the quality factor is multiplied by the absorbed dose, the result is the dose equivalent, which is an estimate of the possible biological damage resulting from exposure to any type of ionizing radiation. The dose equivalent is measured in rem (roentgen equivalent man). In terms of environmental radiation, the rem is a large unit. Therefore, a smaller unit, the millirem (mrem) is often used. One millirem (mrem) is equal to 0.001 of a rem.

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The term dose to man refers to the dose or dose equivalent that is received by members of the general public at or beyond the site boundary. The dose is calculated based on concentrations of radioactive material measured in the environment. The primary pathways that contribute to the dose to man are; the inhalation pathway, the ingestion pathway, and direct radiation.

Discussion In the United States, a persons average annual radiation dose is 620 mrem. About half that amount comes from naturally occurring radionuclides. Radon and thoron gases account for two-thirds of this exposure, while cosmic, terrestrial, and internal radiation account for the remainder.

The other half comes from manmade sources and is mostly from diagnostic medical procedures.

The pie chart below shows a breakdown of radiation sources that contribute to the average annual U.S. radiation dose of 620 mrem. Nearly three-fourths of this dose is split between radon/thoron gas (naturally occurring) and diagnostic medical procedures (manmade).

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There are three separate groups of radionuclides that were measured and analyzed for in the 2020 environmental sampling program.

1. The first of these groups consists of the radionuclides that are naturally occurring. The environment contains a significant inventory of naturally occurring radioactive elements.

The components of natural or background radiation include the decay of radioactive elements in the earths crust, a steady stream of high-energy particles from space called cosmic radiation and naturally-occurring radioactive isotopes in the human body like Potassium-40.

A number of naturally occurring radionuclides are present in the environment. These are expected to be present in many of the environmental samples collected in the vicinity of the Nine Mile Point Site. Some of the radionuclides normally present include:

• Beryllium-7, present as a result of the interaction of cosmic radiation with the upper atmosphere

• Potassium-40 and Radium-226, naturally occurring radionuclides found in the human body and throughout the environment Beryllium-7 and Potassium-40 are especially common in REMP samples. Since they are naturally occurring and are abundant, positive results for these radionuclides are reported in some cases in Section 6.0 of this report. Comparisons of program samples to naturally occurring radiation are made throughout this section to help put program results into perspective and to aid the reader in determining what, if any, significant impact is demonstrated by the REMP results.

2. The second group consists of radionuclides that may be detected in the environment as a result of the detonation of thermonuclear devices in the earths atmosphere. Atmospheric nuclear testing during the early 1950s produced a measurable inventory of radionuclides presently found in the lower atmosphere, as well as in ecological systems. In 1963, an Atmospheric Test Ban Treaty was signed. Since the treaty, the global inventory of manmade radioactivity in the environment has been greatly reduced through the decay of short lived radionuclides and the removal of radionuclides from the food chain by such natural processes as weathering and sedimentation. This process is referred to in this report as ecological cycling. Since 1963, several atmospheric weapons tests have been conducted by the Peoples Republic of China and underground weapons testing by India, Pakistan & North Korea. In some cases, the usual radionuclides associated with nuclear detonations were detected for several months following the test, and then after a peak detection period, diminished to a point where most could not be detected. Although reduced in frequency, atmospheric testing continued into the 1980's. The resulting fallout or deposition from these most recent tests has influenced the background radiation in the vicinity of the site and was evident in many of the sample media analyzed over the years. Fallout radionuclides from nuclear weapons testing included Cesium-137 and Strontium-90. The highest weapons testing concentrations were noted in samples collected for the 1981 REMP. Cs-137 was the major byproduct of this testing and is still occasionally detected in a few select number of environmental media.

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3. The third group consists of radionuclides that may be detected in the environment are related to nuclear power technology. These radionuclides are the byproduct of the operation of light water reactors. These byproduct radionuclides, the same as those produced in atmospheric weapons testing, are found in the Chernobyl and Fukushima Daiichi Nuclear Power Station fallout. This commonality makes a determination of the source of these radionuclides, which may be detected in environmental samples, difficult. During 2020, there were no plant-related radionuclides detected in the REMP sampling.

A number of factors must be considered in performing radiological sample data evaluation and interpretation. The evaluation is made using several approaches including trend analysis and dose to man. An attempt has been made not only to report the data collected during 2020, but also to assess the significance of the radionuclides detected in the environment as compared to naturally occurring and manmade radiation sources. It is important to note that detected concentrations of radionuclides in the local environment as a result of mans technology are very small and are of no, or little, significance from an environmental or dose to man perspective.

The 2009 per capita average dose was determined to be 620 mrem per year from all sources, as noted in National Council on Radiation Protection and Measurement (NCRP) Report No. 160. This average dose includes such exposure sources as industrial & occupational, consumer products, terrestrial, cosmic, internal, nuclear medicine, medical procedures, radon and thoron. The 2009 per capita dose rate due to naturally occurring sources was 310 mrem per year. The per capita radiation dose from nuclear power production nationwide is less than 1 mrem per year.

The naturally occurring gamma radiation in the environs of the Nine Mile Point site, resulting from radionuclides in the atmosphere and in the ground, accounts for approximately 50 mrem per year. This dose is a result of radionuclides of cosmic origin (for example, Be-7) and of primordial origin (Ra-226, K-40, and Th-232). A dose of 50 mrem per year, as a background dose, is significantly greater than any possible doses as a result of routine operations at the site during 2020.

The results of each sample medium are discussed in detail in Sections 5.1 and 5.2. This includes a summary of the results, the estimated environmental impact, a detailed review of any relevant findings with a dose to man estimate where appropriate, and an analysis of possible long-term and short-term trends.

During routine implementation of the REMP, additional or optional environmental pathway media are sampled and analyzed. These samples are obtained to:

• Expand the area covered by the program beyond that required by the ODCM

• Provide more comprehensive monitoring than is currently required

• Monitor the secondary dose to man pathways

• Maintain the analytical data base established when the plants began commercial operation 5-4

The optional samples that are collected will vary from year to year. In addition to the optional sample media, additional locations are sampled and analyzed for those pathways required by the ODCM. These additional sample locations are obtained to ensure that a variety of environmental pathways are monitored in a comprehensive manner. Data from additional sample locations that are associated with the required ODCM sample media are included in the data presentation and evaluation. When additional locations are included, the use of this data is specifically noted in Sections 5.1 and 5.2.

Section 6.0 contains the analytical results for the sample media addressed in the report. Tables are provided for each required sample medium analyzed during the 2020 program.

Section 7.0, titled Historical Data Tables, contains statistics from previous years environmental sampling. The process of determining the impact of plant operation on the environment includes the evaluation of past analytical data to determine if trends are changing or developing. As state-of-the-art detection capabilities improve, data comparison is difficult in some cases. For example, Lower Limits of Detections (LLDs) have improved significantly since 1969 due to technological advances in laboratory procedures and analytical equipment.

5.1 AQUATIC PROGRAM The aquatic program consists of samples collected from three environmental pathways.

These pathways are:

• Shoreline Sediment

• Fish

• Surface Water Section 6.0, Tables 6-1 through 6-4 present the analytical results for the aquatic samples collected for the 2020 sampling period.

5.1.1 SHORELINE SEDIMENT RESULTS A. Results Summary Shoreline sediment samples were obtained in April and October of 2020 at one offsite control location (Langs Beach located near Oswego Harbor) and at one indicator location (Sunset Bay) which is an area east of the site considered to have recreational value.

A total of four sediment samples were collected for the 2020 sample program, two indicator and two controls. No plant-related radionuclides were detected in the 2020 shoreline sediment samples.

The following is a graph of the average Cs-137 concentration in shoreline sediment 5-5

samples over 22 years. The graph illustrates a general downward trend in the Cs-137 concentrations since 1997. No Cs-137 has been detected in shoreline sediment samples since 2008.

B. Data Evaluation and Discussion Shoreline sediment samples are routinely collected twice per year from the shoreline of Lake Ontario. Samples are collected from one indicator location (Sunset Bay),

and one control location (Langs Beach). Samples were collected from both the indicator and control locations in April and October 2020. The results of these sample collections are presented in Section 6.0, Table 6-1, Concentrations of Gamma Emitters in Shoreline Sediment Samples - 2020. Potassium-40 (K-40) and Radium-226 (Ra-226), Actinium-228 (Ac-228), Thorium-228 (Th-228) and Thorium-232 (Th-232) all naturally-occurring isotopes, were the only radionuclides detected in the sediment samples.

C. Dose Evaluation The calculated potential whole body and skin doses which may result from the measured Cs-137 concentrations in previous years are extremely small and are insignificant when compared to natural background doses.

The radiological impact of Cs-137 measured in the shoreline sediment can be evaluated on the basis of dose to man. In the case of shoreline sediments, the critical pathway is direct radiation to the whole body and skin. Using the parameters provided in Regulatory Guide 1.109, the potential dose to man in mrem per year can be calculated. The following regulatory guide values were used in calculating the 5-6

dose to man:

• A teenager spends 67 hours7.75463e-4 days <br />0.0186 hours <br />1.107804e-4 weeks <br />2.54935e-5 months <br /> per year at the beach area or on the shoreline,

• The sediment has a mass of 40 kg/m2 (dry) to a depth of 2.5 cm,

• The shoreline width factor is 0.3, and

• The maximum 2020 LLD concentration of <0.073 pCi/g (dry).

Using these conservative parameters, the potential dose to the maximum exposed individual (teenager) would be 0.00025 mrem/year to the whole body and 0.00029 mrem/year to the skin. This calculated dose is very small and is insignificant when compared to the natural background annual exposure of approximately 52 mrem as measured by control TLDs in the vicinity of the site.

D. Data Trends Cs-137 was not detected at the indicator and control sample locations from 2008 through 2020.

The general absence of Cs-137 in the indicator and control samples can be attributed to changing lake levels and shoreline erosion. Recent soil samples, from locations beyond any expected influence from the site, have contained levels of Cs-137 equal to or greater than the concentrations found in shoreline samples collected in the past. Cs-137 is commonly found in soil samples and is attributed to weapons testing fallout.

The previous ten- year data trend for indicator shoreline samples showed an overall downward trend in concentration measured at the indicator sample locations. Over the previous ten-year period maximum concentration at the indicator locations was 0.04 pCi/g (dry) in 2007. Cs-137 was not detected at the indicator location for 2008 through 2020. This continues to support the long term decreasing trend in Cs-137 concentration in shoreline sediment samples. Cs-137 was not detected in the control samples collected over the previous ten years.

Shoreline sediment sampling at the indicator location commenced in 1985. Prior to 1985, no data was available for long term trend analysis.

Section 7.0, Tables 7-1 and 7-2 illustrate historical environmental data for shoreline sediment samples.

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5.1.2 FISH SAMPLE RESULTS A. Results Summary A total of 21 fish samples were collected for the 2020 sample program. The analytical results for the 2020 fish samples showed no detectable concentration of radionuclides that would be attributable to plant operations at the site or past atmospheric weapons testing. Since 2002, Cs-137 has not been measured in fish samples. Over the previous 20 years prior to 2003, Cs-137 has been detected at a combination of both the indicator and/or control locations. (Refer to Tables 7-3 and 7-4). These low levels of Cs-137 represented no significant dose to man or impact on the environment.

The 2020 fish sample results demonstrate that plant operations at the Nine Mile Point Site have no measurable radiological environmental impact on the upper levels of the Lake Ontario food chain. The 2020 results are consistent with previous years results in that they continue to support the general long-term downward trend in fish Cs-137 concentrations over the past 25 years. Cs-137 was not detected in fish samples collected from 2003 to 2020 at indicator locations.

B. Data Evaluation and Discussion Fish collections were made utilizing gill nets at one location greater than five miles from the site (Oswego Harbor area) and at two locations in the vicinity of the lake discharges for the NMPNS and the JAFNPP facilities. The Oswego Harbor samples served as control samples while the NMPNS and JAFNPP samples served as indicator samples. All samples were analyzed for gamma emitters. Section 6.0, Table 6-2 shows individual results for all the samples collected in 2020 in units of pCi/kg (wet).

The spring fish collection was made up of nine individual samples representing three separate species. Lake Trout, Smallmouth Bass, and Walleye were collected.

The summer fish collection was comprised of twelve individual samples representing three individual species. Brown Trout, Chinook Salmon, Smallmouth Bass, and Walleye were collected.

C. Dose Evaluation Fish represent the highest level in the aquatic food chain and have the potential to be a contributor to the dose to man from the operations at the site. The lack of detectable concentrations of plant-related radionuclides in the 2020 fish samples demonstrates that there is no dose to man attributable from operations at the site through the aquatic pathway. Some Lake Ontario fish species may be considered an important food source due to the local sport fishing industry. Therefore, these fish are an integral part of the human food chain.

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D. Data Trends The positive detection of Cs-137 in fish samples ceased in 2003. The graph below illustrates the mean control and indicator Cs-137 concentrations for 2020 and the previous 15 years.

The general long-term decreasing trend for Cs-137, illustrated in the graph below, is most probably a result of the cesium becoming unavailable to the ecosystem due to ion exchange with soils and sediments and radiological decay. The concentrations of Cs-137 detected in fish since 1976 are considered to be the result of weapons testing fallout. The general downward trend in concentrations will continue as a function of additional ecological cycling and radiological decay.

The data trend shows a consistent level of Cs-137 measured in fish between 1997 and 1998. After 1998, the number of positive detections drops off as noted in the five-year trend. The 1996 through 2020 results, as a group, are the lowest Cs-137 concentrations measured over the existence of the sample program.

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Section 7.0, Tables 7-3 and 7-4 show historical environmental sample data for fish.

5.1.3 SURFACE WATER (LAKE)

A. Results Summary The ODCM requires that monthly surface water samples be taken from the respective inlet water supplies of the JAFNPP and NRG Energy's Oswego Steam Station. In conjunction with the required samples, three additional Lake Ontario surface water locations are sampled and analyzed. These additional locations are the Oswego City Water Intake, the NMP1 Intake and the NMP2 Intake. Gamma spectral analysis was performed on 24 monthly composite samples from the ODCM locations and on 36 monthly composite samples collected from the additional sample locations. The results of the gamma spectral analyses showed that only naturally-occurring radionuclides were detected in the 60 samples from the five locations collected for the 2020 Sampling Program. Monthly composite samples showed no presence of plant-related gamma emitting isotopes in the waters of Lake Ontario as a result of plant operations.

The monthly surface water samples are composited on a quarterly basis and are analyzed for tritium. A total of 20 samples were analyzed for tritium as part of the 2020 REMP program. The results for the 2020 samples showed no positive detection of tritium above 500 pCi/L.

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B. Data Evaluation and Discussion Gamma spectral analysis was performed on monthly composite samples from five Lake Ontario sampling locations. No plant-related radionuclides were detected in the 2020 samples. This is consistent with historical data, which has not shown the presence of plant-related radionuclides in surface water samples.

The tritium results for the JAFNPP inlet canal samples contained no positive detections.

The 2020 results had LLD values that ranged from <181 pCi/l to <187 pCi/l. The ODCM Control location (Oswego Steam Station inlet canal) results showed no positive detections and the sample results had LLD values in the range of <182 pCi/l to <198 pCi/l.

The Oswego City Water Supply is sampled to monitor drinking water quality and is representative of a control location due to its distance from the site. The city water inlet is located 7.8 miles west of the site in an upstream direction based on the current patterns in the lake.

The following is a summary of LLD results for the 2020 sample program:

Sample Tritium Concentration pCi/liter Location Minimum Maximum Mean (Annual)

JAF Inlet (Indicator)* <181 <187 <184 Oswego Steam Inlet (Control)* <182 <198 <188 NMP #1 Inlet <181 <192 <185 NMP #2 Inlet <181 <189 <185 Oswego City Water Supply <182 <193 <185

• Sample location required by ODCM The above LLD values are below the ODCM required LLD value of 3000 pCi/l.

Analytical results for surface water samples are found in Section 6.0, Tables 6-3 through 6-4.

C. Dose Evaluation The radiological impact to members of the public from low levels of tritium in water is insignificant. This can be illustrated by calculating a dose to the whole body and maximum organ using the maximum LLD value and Regulatory Guide 1.109 methodology. Based on a water ingestion rate of 510 liters/yr and a maximum LLD concentration of 198 pCi/l, the calculated dose would be less than 0.0205 mrem per year to the child whole body and less than 0.0205 mrem per year to the child liver (critical age group/organ).

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D. Data Trends There are no data trends for gamma emitters such as Cs-137 and Co-60 as historically these radionuclides have not been detected in lake water samples.

Tritium results for the 2020 lake water samples were consistent with results from the previous five years for both the indicator and control locations. The mean 2020 tritium concentrations were <188 pCi/l for the control and <184 pCi/l for the indicator locations.

For the previous five years, there were no positive detections for the indicator and control locations. This previous five-year data set is consistent with long term tritium results measured at the site. The indicator data from the previous ten-year period, 2008 through 2020, tritium concentrations show no detectable levels of tritium measured. The 1999 mean control value of 365 pCi/l is the highest concentration measured since 1987 and is within the variability of results measured over the life of the program.

The following graph illustrates the concentrations of tritium measured in Lake Ontario over the previous 20 years at both an indicator and control location. Prior to 1985, the Oswego City Water Supply results were used as control location data as this location closely approximates the Oswego Steam Station, the current control location. There is no existing preoperational data for comparison to recent data.

Historical data for Surface Water Tritium is presented in Section 7.0, Tables 7-7 and 7-8 5 - 12

5.1.4 JAFNPP GROUNDWATER A. Results Summary A groundwater monitoring program is not required by the ODCM. The program is being implemented as the result of Nuclear Energy Institute (NEI) Ground Water Protection Plan Initiative. 46 groundwater samples were collected from a number of locations shown in Section 3.3, Figure 3.3-7a and listed in Table 3.3-1.

A total of 22 monitoring well locations were sampled for gamma emitters and tritium during the 2020 sample program using 20 indicator locations and two control locations.

All sample results for 2020 groundwater monitoring program were less than the LLD for plant-related gamma emitters. Tritium was detected in groundwater monitoring samples at amounts consistent to historical results.

B. Data Evaluation and Discussion Plant-related gamma emitters and tritium analyses were performed on indicator and control locations. No plant-related radionuclides were detected in the 2020 samples.

This is consistent with historical data, which has not shown the presence of plant-related radionuclides in ground water samples.

Monitoring well tritium samples analyzed for the 2020 sample program were analyzed to an LLD of <200 pCi/l. The tritium results for the control locations ranged from <180 to <182 pCi/l and the results from the indicator locations ranged from <175 to 402 pCi/l.

C. Dose Evaluation There were no groundwater sources in 2020 that were tapped for drinking or irrigation purposes in areas where the hydraulic gradient or recharge properties support contamination migration; therefore, drinking water was not a dose pathway during 2020.

To assess the dose associated with tritium, the highest positive value of 402 pCi/l was used:

• Maximum tritium concentration 402 pCi/l (highest value)

• 510 liters of water consumed per year.

The theoretical dose to the whole body and maximum organ using the maximum value and Regulatory Guide 1.109 methodology were determined. The calculated dose would be <0.050 mrem to the child whole body and <0.050 mrem to the child liver (critical age group/organ).

D. Data Trends There are no data trends for plant-related gamma emitters or tritium as these radionuclides have not been detected in groundwater samples.

Groundwater tritium results are documented in the Annual Radiological Effluent Release Report for 2020. Historical data for groundwater tritium is present in Section 5 - 13

7.0, Tables 7-27, Historical Environmental Sample Data, Ground water Tritium (Control), Tables 7-28, Historical Environmental Sample Data, Groundwater Monitoring Wells Tritium (Indicator).

5.1.5 NMPNS GROUNDWATER A. Results Summary A groundwater monitoring program is not required by the ODCM. The program is being implemented as the result of Nuclear Energy Institute (NEI) Ground Water Protection Plan Initiative. Groundwater samples were collected from a number of locations shown in Section 3.3, Figure 3.3-7b and listed in Table 3.3-1.

A total of 45 tritium samples were collected for the 2020 sample program using 25 indicator locations and three control locations.

A total of 17 monitoring well locations were sampled for gamma emitters using 15 indicator locations and two control locations. A total of 8 wells were sampled for Strontium-89/90 (Sr-89/90) during the 2020 sample program using 8 indicator locations. A total of 28 monitoring well locations were sampled for tritium during the 2020 sample program using 25 indicator locations and three control locations. All sample results for 2020 groundwater monitoring program were less than the LLD for plant-related gamma emitters and Strontium 89/90.

B. Data Evaluation and Discussion Plant-related gamma emitters and Sr-89/90 analyses were performed on indicator and control locations. No plant-related radionuclides were detected in the 2020 samples.

This is consistent with historical data, which have not shown the presence of plant-related radionuclides in ground water samples.

Monitoring well tritium samples analyzed for the 2020 sample program were analyzed to an LLD of 200 pCi/l. The tritium results for the control locations ranged from <176 to <179 pCi/l and the results from the indicator locations ranged from <172 to 252 pCi/l.

C. Dose Evaluation Sampling for groundwater, as found in Section D 3.5.1 of the NMP2 ODCM, was not required during 2020. There were no groundwater sources in 2020 that were tapped for drinking or irrigation purposes in areas where the hydraulic gradient or recharge properties support contamination migration; therefore, drinking water was not a dose pathway during 2020.

To assess the dose associated with tritium, the highest value was used:

• Maximum tritium concentration 252 pCi/l (highest value)

• 510 liters of water consumed per year.

The theoretical dose to the whole body and maximum organ using the maximum value and Regulatory Guide 1.109 methodology were determined. The calculated dose would be <0.026 mrem to the child whole body and <0.026 mrem to the child 5 - 14

liver (critical age group/organ).

D. Data Trends There are no data trends for plant-related gamma emitters or Sr-89/90 as these radionuclides have not been detected in groundwater samples.

Groundwater tritium results are documented in the Annual Radiological Effluent Release Report for 2020. Historical data for groundwater tritium is present in Section 7.0, Tables 7-25, Historical Environmental Sample Data, Ground water Tritium (Control), Tables 7-26, Historical Environmental Sample Data, Groundwater Monitoring Wells Tritium (Indicator).

5.2 TERRESTRIAL PROGRAM The terrestrial program consists of samples collected from four environmental pathways.

These pathways are:

• Airborne particulate and radioiodine

• Direct Radiation

• Milk

• Food Products Section 6.0, Tables 6-5 through 6-12 present the analytical results for the terrestrial samples collected for the 2020 reporting period.

5.2.1 AIR PARTICULATE GROSS BETA A. Results Summary Weekly air samples were collected and analyzed for particulate gross beta activity. For the 2020 program, a total of 52 samples were collected from control location R5 and 208 samples were collected from indicator locations R1, R2, R3, and R4. These five locations are required by the ODCM. Additional air sampling locations are maintained and are discussed in Section 5.2.1.B below. The mean gross beta concentration for samples collected from the control location (R5) in 2020 was 0.016 pCi/m3. The mean gross beta concentration for the samples collected from the indicator locations (R1, R2, R3, and R4) in 2020 was 0.016 pCi/m3. The consistency between the indicator and control mean values, demonstrates that there are no increased airborne radioactivity levels in the general vicinity of the site from plant effluents.

B. Data Evaluation and Discussion The air monitoring system consists of 15 sample locations, five required by the ODCM 5 - 15

and ten optional locations. The optional offsite locations are designated as D2, E, F and G OFF. The optional onsite locations are designated as D1, G ON, H, I, J and K.

Each location is sampled weekly for particulate gross beta activity. A total of 771 samples were collected and analyzed as part of the 2020 program. Gross beta analysis requires that the samples be counted no sooner than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after collection. This allows for the decay of short half-life naturally-occurring radionuclides, thereby increasing the sensitivity of the analysis for plant-related radionuclides.

Section 6.0, Tables 6-5 and 6-6 present the weekly gross beta activity results for samples collected from the offsite and onsite locations.

The minimum, maximum and average gross beta results for sample locations required by the ODCM were as follows:

Concentration pCi/m3 Location Minimum Maximum Mean R1 0.011 0.030 0.016 R2 0.010 0.026 0.016 R3 0.010 0.029 0.016 R4 0.008 0.026 0.016 R5 (control) 0.009 0.026 0.016 5 - 16

The mean weekly gross beta concentrations measured in 2020 are illustrated in the following graphs:

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The fluctuations observed in the gross beta activity over the year can be attributed to changes in the environment, especially seasonal changes. The concentrations of naturally-occurring radionuclides in the lower levels of the atmosphere directly above the land are affected by time-related processes such as wind direction, precipitation, snow cover, soil temperature and soil moisture content.

C. Dose Evaluation Dose calculations are not performed based on gross beta concentrations. Dose to man as a result of radioactivity in air is calculated using the specific radionuclide and the associated dose factor. See Section 5.2.2.C for dose calculations from air concentrations.

The dose received by man from air gross beta concentration is a component of the natural background.

D. Data Trends With the exception of the 1986 sample data, which was affected by the Chernobyl accident, the general trend in air particulate gross beta activity has been one of decreasing activity since 1981, when the mean control value was 0.165 pCi/m3. The 1981 samples were affected by fallout from a Chinese atmospheric nuclear test which was carried out in 1980.

The mean gross beta concentration measured in 1969 to 2020 are illustrated in the following graph:

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The trend for the previous five years represents a base line concentration or natural background level for gross beta concentrations. This trend is stable with minor fluctuations due to natural variations. The change in concentrations over the period of 2010 through 2020 is very small. This is illustrated by the following graph.

The mean annual gross beta concentration at the control station (R5) has remained steady with a narrow range of 0.014 pCi/m3 to 0.018 pCi/m3. The mean annual concentrations for the indicator stations for this same time period were similar to the control and ranged from a minimum of 0.014 pCi/m3 to a maximum mean of 0.018 pCi/m3 in 2011.

Historical data of air particulate gross beta activity are presented in Section 7.0, Tables 7-9 and 7-10.

5.2.2 QUARTERLY PARTICULATE COMPOSITES (GAMMA EMITTERS)

A. Results Summary Fifteen air monitoring stations are maintained around JAFNPP, NMP1, and NMP2.

Five of the 15 air monitoring stations are required by the ODCM and are located offsite near the site boundary and offsite as a control location. Ten additional air sampling stations are also maintained as part of the sampling program. Together, these 15 continuous air sampling stations make up a comprehensive environmental monitoring network for measuring radioactive air particulate concentrations in the environs of the site. Annually, the 15 air monitoring stations maintained around JAFNPP, NMP1 and NMP2 provide 771 individual air particulate samples which are assembled by location into 60 quarterly composite samples. The quarterly composites are analyzed using gamma spectroscopy.

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No plant-related gamma emitting radionuclides were detected in any of the air particulate filter samples collected during 2020.

The gamma analysis results for the quarterly composite samples routinely showed positive detections of Be-7 and K-40. Both of these radionuclides are naturally occurring.

B. Data Evaluation Discussion A total of 15 air sampling stations are in continuous operation and located both onsite and in the offsite sectors surrounding the Nine Mile Point Site. Each of the weekly air particulate filters collected for the quarter is assembled by location to form quarterly composite samples. The quarterly composite samples required by the ODCM are composite samples assembled for R1, R2, R3, R4 and R5. Other sample locations not required by the ODCM, for which analytical results have been provided, include six onsite locations and four offsite locations. The analytical results for the 60 air particulate filter composites in 2020 showed no detectable activity of plant related radionuclides.

The results of the quarterly composite samples are presented in Section 6.0, Table 6-9.

C. Dose Evaluation The calculated dose as a result of plant effluents is not evaluated due to the fact that no plant related radionuclides were detected in 2020. The monthly air particulate sampling program demonstrated no offsite dose to man from this pathway as a result of operations of the plants located at the Nine Mile Point Site (NMP).

D. Data Trends No plant related radionuclides were detected during 2020 at the offsite air monitoring locations.

The ten-year database of air particulate composite analysis shows that there is no buildup or routine presence of plant related radionuclides in particulate form in the atmosphere around the site. Historically Co-60 was detected in each of the years from 1977 through 1984 at both the indicator and control locations, with the exception of 1980 when Co-60 was not detected at the control location. The presence of Co-60 in the air samples collected during these years was the result of atmospheric weapons testing. Co-60 was again detected in an offsite 2000 indicator sample and was the only positive detection of Co-60 since 1984. The detection of Co-60 in the one 2000 sample was an isolated event associated with effluents from the NMP1 facility. There have been no subsequent measurable concentrations of Co-60 in the environment surrounding the NMP site.

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Historical data shows that Cs-137 is the fission product radionuclide most frequently detected in the air particulate filter composites. Cs-137 was detected in each of the years from 1977 through 1983 at both the control and indicator sampling locations.

The presence of Cs-137 in the air samples collected during these years was the result of atmospheric weapons testing. Cs-137 was again detected in 1986 as a result of the Chernobyl accident. Since 1986 there have been no detections of Cs-137 in the environment surrounding the NMP site.

Historical data for air particulate results are presented in Section 7.0, Tables 7-11 and 7-12.

5.2.3 AIRBORNE RADIOIODINE (I-131)

A. Results Summary Iodine-131 was not detected in any of the 771 samples analyzed for the 2020 program.

B. Data Evaluation and Discussion Airborne radioiodine (I-131) is monitored at the 15 air sampling stations also used to collect air particulate samples. There are five offsite locations, required by the ODCM.

Ten air sampling locations are also maintained in addition to those required by the ODCM. Six of these stations D1, G, H, I, J and K are located onsite. D2, E, F and G are the optional stations located offsite. Samples are collected using activated charcoal cartridges. They are analyzed weekly for I-131.

The analytical data for radioiodine are presented in Section 6.0, Tables 6-7 and 6-8.

C. Dose Evaluation The calculated dose as a result of I-131 in plant effluents is not evaluated due to the fact that no I-131 was detected in 2020. The I-131 sampling program demonstrated no offsite dose to man from this pathway as a result of operation of the plants located at Nine Mile Point.

D. Data Trends There was no I-131 detected in any of the samples, collected from the 15 sample stations, for 2012 through 2020.

In 2011, I-131 was detected at all 15 sampling locations over a three-week period. The positive detections were the result of the Fukushima event. Prior to then, there had been no positive detection of I-131 in air samples collected from 2002 to 2010.

I-131 has previously been detected in samples collected in 1986 and 1987. The 1986 detection of I-131 was the result of the Chernobyl accident and the 1987 detection was the result of plant operations.

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I-131 has been detected in the past at control locations. Control samples collected during 1976 had a mean I-131 concentration of 0.60 pCi/m3. During 1977 this mean decreased to 0.32 pCi/m3, and further decreased by a factor of ten to 0.03 pCi/m3 in 1978. I-131 was not detected in samples collected from the control location during 1979 - 1981 and 1983 to 1985. I-131 was detected once at the control location during 1982 at a concentration of 0.039 pCi/m3.

Historical data for I-131 are presented in Section 7.0, Tables 7-13 and 7-14.

5.2.4 DIRECT RADIATION THERMOLUMINESCENT DOSIMETERS (TLD)

A. Results Summary Thermoluminescent dosimeters (TLDs) are used to measure direct radiation (gamma dose) in the environment. As part of the 2020 environmental monitoring program, TLDs were placed at a total of 72 different environmental TLD locations (32 required by the ODCM and 40 optional locations). These TLDs were placed, collected and read each quarter of 2020. As a result of placing two TLDs at each location, the results presented in this report are the average of two TLD readings obtained for a given location.

The TLDs were placed in the following five geographical locations around the site boundary:

• Onsite (areas within the site boundary, includes TLD #s 3, 4, 5, 6, 7, 23, 24, 25, 26; TLD #s 18, 27, 28, 29, 30, 31, 39, 47, 103, 106, 107 are excluded).

The Onsite TLDs are optional and used for plant operations only.

• Site Boundary (area of the site boundary in each of the 16 meteorological sectors: Only TLD results that are not affected by radwaste building direct shine, includes TLD #s 7, 18, 78, 79, 80, 81, 82, 83, 84; TLD #s: 23, 75, 76, 77, 85, 86, 87 are excluded)

• Offsite Sector (area four to five miles from the site in each of the eight-land based meteorological sectors, includes TLD #s: 88, 89, 90, 91, 92, 93, 94, 95)

• Special Interest (areas of high population density, includes TLD #s 15, 56, 58, 96, 97, 98*)

• Control (areas beyond significant influence of the site, includes TLD #s 8, 14, 49)

• - TLD applicable to NMP1 and NMP2 ODCM All geographical locations are required by the ODCM with the exception of the Onsite area which was optional. Description of the five geographical categories and the designation of specific TLD locations that make up each category is presented in Section 3.1.5, TLD (Direct Radiation) of this report.

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A summary of the 2020 dose rates for each of the five geographical locations is as follows:

Dose in mrem per standard month Geographic Category Min Max Mean Onsite (Optional) 4.5 14.7 6.1 Site Boundary (Inner Ring)

• 4.5 6.3 5.3 Offsite Sectors (Outer Ring)

• 4.5 6.4 5.2 Special Interest

• 4.7 6.3 5.2 Control

• 4.8 6.2 5.5

• Geographical locations required by the ODCM Comparison of annual mean dose rates associated with each geographical location indicate that there is no statistical difference in annual dose as a function of distance from the site boundary. The measured annual dose rate at the nearest resident to the site was consistent with the dose rates measured at the site boundary and control locations. The results for the Site Boundary, Offsite Sectors and Special Interest (Offsite) were well within expected normal variation when compared to the Control TLD results.

The results for the 2020 environmental TLD monitoring program indicate that there was no significant increase in dose rates as a result of operations at the site. The Hydrogen Water Chemistry system and the Independent Spent Fuel Storage Installation (ISFSI) in use at the JAFNPP and NMPNS did not measurably increase the ambient radiation exposure rate beyond the site boundary.

B. Data Evaluation and Discussion Direct Radiation (Gamma Dose) measurements were taken at 72 different environmental locations during 2020, 32 of which are required by ODCM. These locations are grouped into five geographical location categories for evaluation of results. The five categories include: Onsite, Site Boundary, Offsite Sector, Special Interest and Control locations. All categories are required by the ODCM with the exception of the Onsite TLDs. Onsite TLDs are placed at various locations within the site boundary to provide additional information on direct radiation levels at and around the NMP1, NMP2 and JAFNPP facilities.

Onsite TLD results ranged from 4.5 to 14.7 mrem per standard month resulting in an average dose rate of 6.1 mrem per standard month in 2020.

The highest dose rate measured at a location required by the ODCM was 10.9 mrem per standard month. This TLD, (TLD 85) represents the site boundary maximum dose and is located in the NNW sector along the lakeshore close to the plants (TLD #s: 23, 75, 76, 77, 85, 86 and 87) are influenced by radwaste buildings and radwaste shipping activities. These locations are not accessible to members of the public and the TLD 5 - 23

results for these areas are not representative of dose rates measured at the remaining site boundary locations.

Offsite Sector TLDs, required by the ODCM, located 4 to 5 miles from the site in each of the 8-land based meteorological sectors ranged from 4.5 to 6.4 mrem per standard month with an average dosed rate of 5.2 mrem per standard month.

Special Interest TLDs from all locations ranged from 4.7 to 6.3 mrem per standard month with an average dose rate of 5.2 mrem per standard month.

The Control TLD group required by the ODCM utilized locations positioned well beyond the site. 2020 Control TLD results ranged from 4.8 to 6.2 mrem per standard month with an annual average dose rate of 5.5 mrem standard month.

TLD analysis results are presented in Section 6.0, Table 6-10.

C. Dose Evaluation 2020 annual mean dose rates for each geographic location required by the ODCM (excluding TLD #s: 23, 75, 76, 77, 85, 86, 87) are as follows:

Site Boundary: 5.3 mrem per standard month (TLD #s: 7,18, 78, 79, 80, 81, 82, 83, 84)

Offsite Sectors: 5.2 mrem per standard month (TLD #s: 88, 89, 90, 91, 92, 93, 94, 95)

Special Interest: 5.3 mrem per standard month (TLD #s: 15, 56, 58, 96, 97,98*)

Control: 5.5 mrem per standard month (TLD #s: 8, 14, 49)

• - TLD 98 required by NMPNS ODCM The measured mean dose rate in the proximity of the closest resident was 5.5 mrem per standard month (TLD #s: 108, 109) which is consistent with the control measurements of 5.5 mrem per standard month.

The mean annual dose for each of the geographic location categories demonstrates that there is no statistical difference in the annual dose as a function of distance from the site.

The TLD program verifies that operations at the site do not measurably contribute to the levels of direct radiation present in the offsite environment.

D. Data Trends A comparison of historical TLD results can be made using the different geographical categories of measurement locations. These include Site Boundary TLDs located in each of the 16 meteorological sectors, TLDs located offsite in each land based sector at a distance of 4 to 5 miles from the site, TLDs located at special interest areas and TLDs located at control locations. Site Boundary, Offsite Sector and Special Interest TLD 5 - 24

locations became effective in 1985; therefore, trends for these results can only be evaluated from 1985 to the present.

The following graph illustrates TLD results for the Control, Site Boundary, Offsite Sectors and Special Interest groups from 2001 through 2020:

The 2020 TLD program results, when compared to the previous ten years, showed no significant trends relative to increased plant originated dose rates in the environment. The trends are due to a change to calculations regarding transit exposure based on recent ANSI Standard directives.

Historical data for the various TLD groupings are presented in Section 7.0, Tables 7-15 through 7-20.

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5.2.5 MILK A. Results Summary A total of 34 milk samples were collected during the 2020 program and analyzed for gamma emitting radionuclides using gamma spectroscopy. In addition, each sample undergoes an iodine extraction procedure to determine the presence of Iodine-131 (I-131).

I-131, a possible plant related radionuclide, is measured to evaluate the cow milk dose pathway to man. I-131 was not detected in any of the 34 milk samples collected in 2020 from the two milk sample locations.

Gamma spectral analyses of the milk samples showed only naturally occurring radionuclides, such as K-40, were detected in milk samples collected during 2020.

K-40 was detected in all indicator and control samples. K-40 is a naturally occurring radionuclide and is found in many environmental sample media.

The 2020 results demonstrate that routine operations of the JAFNPP, NMP1, and NMP2 resulted in no measurable contribution to the dose to the public from the cow/milk pathway.

B. Sampling Overview Milk samples were collected from one indicator location and one control location. The ODCM requires that three sample locations be within five miles of the site. Based on the milk animal census, there were no adequate milk sample locations within five miles of the site in 2020. Samples were collected from two farms located beyond the five- mile requirement to ensure the continued monitoring of this important pathway. The indicator location was located 8.7 miles from the site. The control samples were collected from a farm located 16.0 miles from the site and in a low frequency wind sector (upwind). The geographic location of each sample location is listed below:

Location No. Direction From Site Distance (Miles) 81 E 10.2 55 E 8.7 77 (Control) S 16.0 Indicator location #55 and Control location #77 were sampled from April through December. Sampling occurs during the first and second half of each month. Samples were not required to be collected during January through March of 2020 due to I-131 not having been detected in samples collected during November and December of 2019, as stipulated in the ODCM.

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C. Data Evaluation and Discussion Each milk sample is analyzed for gamma emitters using gamma spectral analysis. The I-131 analysis is performed using resin extraction followed by spectral analysis for each sample. I-131 and gamma analysis results for milk samples collected during 2020 are provided in Section 6.0, Table 6-11.

Iodine-131 was not detected in any indicator or control milk samples analyzed during 2020. All I-131 milk results were reported as Lower Limits of Detection (LLD). No plant-related radionuclides were detected in any milk sample collected in 2020. K-40 was the most abundant radionuclide detected, and found in every indicator and control sample collected. K-40 is a naturally-occurring radionuclide and is found in many of the environmental media samples. Cs-137 was not detected in any indicator or control milk sample collected in 2020.

D. Dose Evaluation The calculated dose as a result of plant effluents is not evaluated due to the fact that no plant related radionuclides were detected.

The dose to man from naturally occurring concentrations of K-40 in milk and other environmental media can be calculated. This calculation illustrates that the dose received due to exposure from plant effluents is negligible compared to the dose received from naturally occurring radionuclides. Significant levels of K-40 have been measured in environmental samples. A 70-kilogram (154 pound) adult contains approximately 0.1 microcuries of K-40 as a result of normal life functions (inhalation, consumption, etc.).

The dose to bone tissue is about 20 mrem per year as a result of internal deposition of naturally-occurring K-40.

E. Data Trends Man-made radionuclides are not routinely detected in milk samples. In the past thirty years, Cs-137 was only detected in 1986, 1987, and 1988. The mean Cs-137 indicator activities for those years were 8.6, 7.4 and 10.0 pCi/l, respectively. I-131 was measured in two milk samples collected in 1997 from a single sample location, having a mean concentration of 0.35 pCi/l and was of undetermined origin. The previous detection was in 1986 with a mean concentration of 13.6 pCi/l. The 1986 activity was a result of the Chernobyl accident.

The comparison of 2020 data to historical results over the operating life of the plants shows that Cs-137 and I-131 levels in milk dropped to less than the lower limit of detection since 1988.

Historical data of milk sample results for Cs-137 and I-131 are presented in Section 7.0, Tables 7-21 and 7-22.

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5.2.6 FOOD PRODUCTS (VEGETATION)

A. Results Summary There were no plant-related radionuclides detected in the twelve food product samples collected and analyzed for the 2020 program.

Detectable levels of naturally occurring K-40 were measured in all of the indicator and control samples collected for the 2020 program. Be-7 a naturally-occurring radionuclide, was also detected in one sample collected in 2020. These results are consistent with the levels measured in 2016 and previous years.

The results of the 2020 sampling program demonstrate that there is no measurable impact on the dose to the public from the garden pathway as a result of plant operations.

B. Data Analysis and Discussion Food product samples were collected from three indicator locations and one control location. The indicator locations are represented by nearby gardens in areas of highest D/Q (deposition factor) values based on historical meteorology and an annual garden census. The control location was a garden 15.4 miles away in a predominately upwind direction.

Food product samples collected during 2020 included both edible and nonedible vegetation. Nonedible samples include rhubarb leaves and corn leaves. The edible vegetation used in this years sampling include horseradish leaves, cabbage, swiss chard, and lettuce. The leaves of these plants were sampled as representative of broadleaf vegetation, which is a measurement of radionuclide deposition. Samples were collected during the late summer/fall harvest season. Each sample was analyzed for gamma emitters using gamma spectroscopy.

The analysis of food product samples collected during 2020 did not detect any plant-related radionuclides. Results for the past five years also demonstrate that there is no buildup of plant-related radionuclides in the garden food products grown in areas close to the site.

Naturally-occurring Be-7 was detected in one of the food product samples. The results for naturally-occurring radionuclides are consistent with the data of prior years.

Analytical results for food products are found in Section 6.0, Table 6-12.

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C. Dose Evaluation The calculated dose as a result of plant effluents is not evaluated due to the fact that no plant-related radionuclides were detected. The food product sampling program demonstrated no measurable offsite dose to man from this pathway as a result of operations of the plants located at Nine Mile Point.

D. Data Trends Food product/vegetation sample results for the last five years demonstrate that there is no chronic deposition or buildup of plant-related radionuclides in the garden food products in the environs near the site.

The last positive indication was for Cs-137 which was detected at one indicator location in 1999 with a concentration of 0.007 pCi/g (wet).

Historically, Cs-137 had been detected in ten separate years since 1976 ranging from a maximum mean concentration of 0.047 pCi/g (wet) in 1985 to a minimum of 0.004 pCi/g (wet) in 1980. The trend for Cs-137 is a general reduction in concentration to non detectable levels in samples collected during the 2000 through 2020 sample programs.

Historical data of food product results are presented in Section 7.0, Tables 7-23 and 7-24.

5.2.7 LAND USE CENSUS RESULTS A. Results Summary The ODCM requires that an annual land use census be performed to identify potential new locations for milk sampling and for calculating the dose to man from plant effluents.

In 2020 a milk animal census, a nearest resident census, and a garden census were performed.

B. Data Evaluation and Discussion A land use census is conducted each year to determine the utilization of land in the vicinity of the Nine Mile Point site. The land use census consists of two types of surveys. A milk animal census is conducted to identify all milk animals within a distance of 10-miles from the site. This census, covering areas out to a distance of 10-miles exceeds the 5-mile distance required by the ODCM.

A total of 180 milk cows and 73 heifers were observed. There are no farms with milking animals with the 5-mile radius of the site. The results of the milk census, showing the applicable sectors and direction and distance of each milk location, are found in Section 6.0, Table 6-13.

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The second type of census conducted is a residence census. The census is conducted in order to identify the closest residence within 5 miles in each of the 22.5 degree land-based meteorological sectors. There are only eight sectors over land where residences are located within 5 miles. The survey for 2020 found no new construction in residential areas for both FitzPatrick and Nine Mile Point since 2016. The results of the nearest residence census, showing the applicable sectors and direction and distance of each of the nearest residence, are found in Section 6.0, Table 6-14 and Table 6-15. The nearest resident locations are illustrated in Section 3.3, Figure 3.3-6a and Figure 3.3-6b.

The results of the nearest residence census conducted in 2020 required a change to ODCMs closest seasonal resident location for FitzPatrick. The seasonal residence at 22 West Sunset Bay Road not longer exists and therefore, based on the JAF centerline, the next closest seasonal residence is located at 18 West Sunset Bay Road. There were no changes to the Nine Mile Point nearest residence census in 2020.

A garden census is performed to identify appropriate garden sampling locations and dose calculation receptors. The 2020 garden census identified a total of 54 gardens for consideration for the sampling program. Garden samples were collected from three locations (79, 144, and 484) as well as a control location (NMPNS C2 or JAFNPP 145) identified in census as active for 2020. See Table 3.3-1 for 2020 sampling locations.

5.2.8 JAFNPP DIRECT RADIATION, THERMOLUMINESCENT DOSIMETERS (TLD)

Independent Spent Fuel Storage Installation (ISFSI)

A. Results Summary Thermoluminescent Dosimeters (TLDs) are used to measure direct radiation (gamma dose) in the localized environment of the ISFSI pad. Eighteen TLD locations are in place around the perimeter of the ISFSI pad. TLDs were placed at these locations prior to loading the first storage casks for baseline dose rate determination in the general area of the pad.

As of the last ISFSI Campaign which ended in the fourth quarter of 2020 there are a total of 32 cask stored at the facility.

The analysis of offsite doses from direct radiation measurements, presented in Section 5.2.4 of this report, concludes that there is no significant difference in annual dose to the public at or beyond the site boundary. The measured annual dose rate at the nearest residence to the site was consistent with the dose rates measured at the site boundary and the offsite control locations. The results for the Site Boundary, Offsite Sectors, and Special Interest (offsite) were well within expected normal variation when compared to the Control TLD results. The results for the 2020 environmental TLD monitoring program indicate that there is no significant increase in dose rates as a result of operations at the site. The use of hydrogen injection and the implementation of the Independent Spent Fuel Storage Installation (ISFSI) at the FitzPatrick plant did not measurably increase the ambient radiation exposure rate at or beyond the site boundary.

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The lack of a dose rate increase at or beyond the site boundary is consistent with design calculations performed to evaluate compliance with 10 CFR 72.104(a).

The measured results of the 2020 TLD monitoring program demonstrate compliance with the offsite dose limits to members of the public specified in 40 CFR 190 and 10 CFR 72.104(a).

B. Program Design An array of eight TLD locations was established around the perimeter of the ISFSI pad 18 months prior to facility usage. Six months prior to the facility becoming operational, an additional 10 TLD locations were established at areas of interest on the facility perimeter. These preoperational TLDs were used for baseline dose rate determination.

The TLDs are placed, collected and read each quarter. Two dosimeters are placed at each location and the average of the two dosimeters is reported. The quarterly results are compared to baseline data to assess the contribution to ambient dose rates in the vicinity of the storage facility from casks as they are placed on the storage pad.

C. Dose Evaluation A maximum dose rate of 254.7 mrem per standard month above the baseline dose rate was measured at the west perimeter fence. This result was due to locating the four cask from the 2018 ISFSI Campaign in close proximity to this TLD location. The lowest measured dose rate of 2020 was 21.8 mrem per standard month above the baseline dose rate and was measured at the east perimeter fence.

An evaluation of Site Boundary TLDs and Control TLDs results for 2020 shows that there is no increase in dose rate at or beyond the site boundary. A detailed discussion of this evaluation is found in Section 5.2.4. The Environmental TLD results for this period show no significant difference in control and site boundary dose rates compared to 2019.

2020 DOSE IN MREM PER STANDARD MONTH Minimum Maximum Mean Site Boundary 4.5 6.3 5.3 Control 4.8 6.2 5.5 5 - 31

5.2.9 NMPNS DIRECT RADIATION, THERMOLUMINESCENT DOSIMETERS (TLD)

Independent Spent Fuel Storage Installation (ISFSI)

A. Results Summary TLDs are used to measure direct radiation (gamma dose) at the site boundary and Optically Stimulated Luminescence Dosimeters (OSLDs) are used to measure direct radiation (gamma dose) in the localized environment of the ISFSI pad. Sixteen TLDs are located around the site, one in each of the sixteen compass sectors, and fourteen OSLDs are located around the perimeter of the ISFSI pad and specific areas of interest.

OSLDs were placed at these locations prior to loading the first storage casks for baseline dose rate determination in the general area of the pad.

During 2020, there were no casks moved to the storage facility. The total number of casks in storage is forty.

The implementation and loading of the ISFSI project has resulted in no increase in dose at the site boundary or to the public. The analysis of offsite doses from direct radiation measurements, presented in Section 5.2.4 of this report, concludes that there is no significant difference in annual dose to the public at or beyond the site boundary. The measured annual dose rate at the nearest residence to the site was consistent with the dose rates measured at the site boundary and the offsite control locations. The results for the Site Boundary, Offsite Sectors, and Special Interest (offsite) were well within expected normal variation when compared to the Control TLD results. The results for the 2020 environmental TLD monitoring program indicate that there is no significant increase in dose rates as a result of operations at the site. The implementation of the ISFSI at the NMPNS plant did not measurably increase the ambient radiation exposure rate at or beyond the site boundary. The lack of a dose rate increase at or beyond the site boundary is consistent with design calculations performed to evaluate compliance with 10 CFR 72.104(a).

The measured results of the 2020 TLD monitoring program demonstrate compliance with the offsite dose limits to members of the public specified in 40 CFR 190 and 10 CFR 72.104(a).

B. Program Design An array of ten OSLD locations was established around the perimeter of the ISFSI pad and four OSLD locations were placed in specific areas of interest twelve months prior to facility usage. These pre-operational OSLDs were used for baseline dose rate determination. The OSLDs are placed, collected and read each quarter. Two dosimeters are placed at each location and the average of the two dosimeters is reported. The quarterly results are compared to baseline data to assess the contribution to ambient dose rates in the vicinity of the storage facility from casks as they are placed on the storage pad.

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C. Dose Evaluation The pre-operation minimum and maximum dose rates were 2.9 and 6.3 mrem per standard month, respectively. During 2020, the maximum dose rate of 25.0 mrem per standard month was measured at OSLD location 241, north of the ISFSI.

The following table presents the pre-operation dose rate data and the operational dose rate data for 2020:

Pre-Operation 2020 OSLD Sector mrem per Standard mrem per Standard Number month Month 233 WNW 3.5 19.2 234 WSW 2.9 17.6 235 S 4.2 12.7 236 SSE 3.8 12.9 237 SE 3.0 11.2 238 ESE 3.5 11.8 239 E 4.0 17.9 240 NE 3.6 21.6 241 N 5.1 25.0 242 NE 6.3 16.0 243 NNW 4.8 19.5 244 NE 4.6 11.1 245 NE 4.0 16.3 246 ENE 4.8 16.4 An evaluation of Site Boundary TLDs and Control TLDs results for 2020 shows that there is no increase in dose rate at or beyond the site boundary. A detailed discussion of this evaluation is found in Section 5.2.4. The Environmental TLD results for this period show no significant difference in control and site boundary dose rates compared to 2018 and preoperational data gathered in 2012.

2020 DOSE IN MREM PER STANDARD MONTH Minimum Maximum Mean Site Boundary 4.5 6.3 5.3 Control 4.8 6.2 5.5 5 - 33

5.3 CONCLUSION

The Radiological Environmental Monitoring Program (REMP) is an ongoing program implemented to measure and document the radiological impact of Nine Mile Point facility operations on the local environment. The program is designed to detect and evaluate small changes in the radiological environment surrounding the site. Environmental media representing food sources consumed at the higher levels of the food chain, such as fish, food products and milk, are part of a comprehensive sampling program. Results of all samples are reviewed closely to determine any possible impact to the environment or to man. In addition, program results are evaluated for possible short-term and long-term historical trends.

The federal government has established dose limits to protect the public from radiation and radioactivity. The Nuclear Regulatory Commission (NRC) specifies a whole-body dose limit of 100 mrem/yr to be received by the maximum exposed member of the general public. This limit is set forth in Section 1301, Part 20, Title 10 of the U.S. Code of Federal Regulations (10 CFR 20).

The Environmental Protection Agency (EPA) limits the annual whole-body dose to 25 mrem/yr, which is specified in Section 10, Part 190, Title 40, of the Code of Federal Regulations (40 CFR 190). Radiation exposure to members of the public, calculated based on the results of the REMP, is extremely small. The dose to members of the public from operations at the Nine Mile Point site, based on environmental measurement and calculations made from effluent releases, is determined to be a fraction of limits set forth by the NRC and EPA.

The REMP continues to demonstrate that the effluents from the site to the environment contribute no significant or even measurable radiation exposures to the general public as confirmed by the sampling and analysis of environmental media from recognized environmental pathways. Based on TLD results there was no measurable increase in radiation levels beyond the site boundary as a result of the hydrogen water chemistry and ISFSI programs. Environmental radiation levels measured at the nearest residence are at the background level based on control station TLD results.

The only measurable radiological impact on the environment continues to be the result of atmospheric weapons testing conducted in the early 1980s, the 1986 accident at the Chernobyl Nuclear Power Plant, and the March 11, 2011 accident at the Fukushima Daiichi Nuclear Power Station.

The REMP did not detect any plant-related radionuclide in the sample media collected during 2020. Dose from man-made sources in the environment is very small when compared to the dose originating from naturally-occurring sources of radioactivity.

Radiation from naturally-occurring radionuclides such as K-40 and Ra-226 contributed the vast majority of the total annual dose to members of the general public. The dose to members of the public, resulting from plant operations, is extremely small in comparison to the dose contribution from natural background levels and sources other than the plants. The whole body dose in Oswego County due to natural sources is approximately 50 mrem per individual per year as demonstrated by control environmental TLDs. The fraction of the annual dose to man, attributable to site operation, remains insignificant.

Based upon the overall results of the 2020 Radiological Environmental Monitoring Program, it can be concluded that the levels and variation of radioactivity in the environment samples were consistent with background levels. Effluents from the site to the environment contribute no significant or even measurable radiation exposures to the general public.

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5.4 REFERENCES

1. U.S. Nuclear Regulatory Commission Regulatory Guide 1.109, Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I, March 1976.

2. U.S. Nuclear Regulatory Commission Regulatory Guide 1.109, Calculation of Annual Doses to Man from Routine Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I, October 1977 (Revision 1).

3. U.S. Nuclear Regulatory Commission Regulatory Guide 4.8, Environmental Technical Specifications for Nuclear Power Plants, December 1975.

4. U.S. Nuclear Regulatory Commission Branch Technical Position to Regulatory Guide 4.8, An Acceptable Radiological Environmental Monitoring Program, Revision 1, November 1979.

5. National Council on Radiation Protection and Measurements (NCRP), Environmental Radiation Measurements, NCRP Report No. 50, 1975.

6. National Council on Radiation Protection and Measurements (NCRP), Natural Background Radiation in the United States, NCRP Report No. 45, 1975.

7. National Council on Radiation Protection and Measurements (NCRP), Cesium-137 from the Environment to Man: Metabolism and Dose, NCRP Report No. 52, 1977.

8. National Council on Radiation Protection and Measurements (NCRP), Radiation Exposure from Consumer Products and Miscellaneous Sources, NCRP Report No. 56, 1977.

9. International Commission on Radiological Protection (ICRP), Radionuclide Release into the Environment: Assessment of Doses to Man, ICRP Publication 29, 1979.

10. Glasstone, Samuel and Jordan, Walter H., Nuclear Power and Its Environmental Effects, First Edition, American Nuclear Society, La Grange Park, Ill., 1980.

11. Schleien, Bernard. The Health Physics and Radiological Health Handbook. Scinta, Inc., Silver Spring, Maryland, 1992.

12. U.S. Department of Health and Human Services. Preparedness and Response in Radiation Accidents, National Center for Devices and Radiological Health, Rockville, Maryland 20857, August 1983.

13. National Council on Radiation Protection and Measurements (NCRP), Ionizing Radiation Exposure of the Population of the United States, NCRP Report No. 93, 1987.

14. National Council on Radiation Protection and Measurements (NCRP), Exposure of the Population in the United States and Canada from National Background Radiation, NCRP Report No. 94, 1987.

15. National Council on Radiation Protection and Measurements (NCRP), Ionizing Radiation Exposure of the Population of the United States, NCRP Report No. 160, 2009.

16. Institute of Nuclear Power Operations, Special Report on the Nuclear Accident at the Fukushima Daiichi Nuclear Power Station, INPO 11-005, November 2011.

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6.0 REPORT PERIOD ANALYTICAL RESULTS TABLES Environmental sample data is summarized in table format. Tables are provided for select sample media and contain data based on actual values obtained over the year. These values are comprised of both positive values and LLD (Lower Limit of Detection) values where applicable.

The LLD is the smallest concentration of radioactive material in a sample that will be detected with 95% probability and with 5% probability of falsely concluding that a blank observation represents a "real" signal (see Section 3.7.3 for detailed explanation).

When the initial count of a sample indicates the presence of radioactivity, two recounts are normally performed. When a radionuclide is positively identified in two or more counts, the analytical results for that radionuclide are reported as the mean of the positive detections and the associated error for that mean (see Section 3.7.2 for methodology).

Many of the tables are footnoted with the term "Plant Related Radionuclides". Plant Related Radionuclides are radionuclides that are produced in the reactor as a result of plant operation, either through the activation or fission process.

6-1

TABLE 6-1 CONCENTRATIONS OF GAMMA EMITTERS IN SHORELINE SEDIMENT SAMPLES - 2020 Results in Units of pCi/kg (dry) +/- 1 Sigma SAMPLE COLLECTION K-40 Co-60 Zn-65 Cs-134 Cs-137 Others LOCATION*** DATE SUNSET BAY* (05) 04/28/20 15450 +/- 768 < 63 < 123 < 93 < 73 < LLD 10/13/20 15040 +/- 672 < 59 < 138 < 64 < 57 < LLD LANG'S BEACH (06, Control) 04/28/20 9665 +/- 679 < 57 < 126 < 53 < 47 < LLD 10/13/20 11580 +/- 600 < 50 < 145 < 52 < 41 < LLD

• Sample required by the ODCM

• • • Corresponds to sample location noted on Figure 3.3-5 Plant related radionuclides 6-2

TABLE 6-2 CONCENTRATIONS OF GAMMA EMITTERS IN FISH SAMPLES - 2020 Results in Units of pCi/kg (wet) +/- 1 Sigma SAMPLE COLLECTION DESCRIPTION K-40 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Cs-134 Cs-137 Others LOCATION*** DATE OSWEGO HARBOR* (00, Control) 06/05/20 Walleye 4286 +/- 526 < 49 < 53 < 116 < 60 < 93 < 54 < 53 < LLD 06/05/20 Lake Trout 3108 +/- 551 < 66 < 64 < 128 < 75 < 157 < 73 < 75 < LLD 06/05/20 Smallmouth Bass 3384 +/- 367 < 33 < 44 < 66 < 36 < 60 < 45 < 42 < LLD 09/01/20 Walleye 3933 +/- 483 < 56 < 65 < 134 < 63 < 137 < 53 < 70 < LLD 09/01/20 Walleye 3307 +/- 456 < 55 < 54 < 150 < 45 < 80 < 61 < 70 < LLD 09/01/20 Brown Trout 3072 +/- 526 < 61 < 46 < 92 < 59 < 149 < 57 < 43 < LLD 09/01/20 Smallmouth Bass 3273 +/- 459 < 52 < 65 < 149 < 73 < 122 < 68 < 53 < LLD NINE MILE POINT* (02) 06/05/20 Walleye 3215 +/- 568 < 63 < 62 < 146 < 73 < 134 < 67 < 76 < LLD 06/05/20 Lake Trout 3528 +/- 484 < 76 < 85 < 187 < 82 < 206 < 93 < 87 < LLD 06/05/20 Smallmouth Bass 3257 +/- 517 < 55 < 41 < 101 < 62 < 83 < 60 < 58 < LLD 09/01/20 Walleye 3411 +/- 543 < 64 < 64 < 158 < 66 < 147 < 78 < 65 < LLD 09/01/20 Walleye 2956 +/- 510 < 73 < 77 < 160 < 81 < 138 < 64 < 65 < LLD 09/01/20 Chinook Salmon 4392 +/- 438 < 56 < 51 < 122 < 58 < 131 < 57 < 58 < LLD 09/01/20 Smallmouth Bass 2622 +/- 403 < 52 < 57 < 120 < 74 < 125 < 48 < 52 < LLD FITZPATRICK* (03) 06/05/20 Walleye 3016 +/- 372 < 33 < 29 < 77 < 28 < 57 < 35 < 41 < LLD 06/05/20 Lake Trout 3129 +/- 556 < 62 < 60 < 138 < 60 < 133 < 82 < 77 < LLD 06/05/20 Smallmouth Bass 3828 +/- 531 < 76 < 63 < 188 < 96 < 189 < 107 < 86 < LLD 09/01/20 Walleye 2642 +/- 506 < 83 < 73 < 178 < 50 < 166 < 100 < 79 < LLD 09/01/20 Walleye 3653 +/- 495 < 50 < 44 < 102 < 60 < 118 < 50 < 59 < LLD 09/01/20 Brown Trout 3574 +/- 504 < 62 < 69 < 126 < 59 < 155 < 68 < 66 < LLD 09/01/20 Smallmouth Bass 3455 +/- 465 < 60 < 67 < 164 < 71 < 155 < 77 < 62 < LLD

• Sample required by the ODCM

• • • Corresponds to sample location noted on Figure 3.3-5 Plant related radionuclides 6-3

TABLE 6-3 CONCENTRATIONS OF TRITIUM IN SURFACE WATER SAMPLES - 2020 Results in Units of pCi/liter +/- 1 Sigma SAMPLE COLLECTION DESCRIPTION H-3 LOCATION*** DATE FITZPATRICK* (03, INLET) 01/07/20 - 03/31/20 First Quarter < 186 03/31/20 - 07/01/20 Second Quarter < 181 07/01/20 - 10/01/20 Third Quarter < 187 10/01/20 - 01/04/21 Fourth Quarter < 183 OSWEGO STEAM STATION* (08, CONTROL) 01/03/20 - 04/03/20 First Quarter < 198 04/03/20 - 07/01/20 Second Quarter < 184 07/01/20 - 10/01/20 Third Quarter < 186 10/01/20 - 01/04/21 Fourth Quarter < 182 NINE MILE POINT UNIT 1** (09, INLET) 01/03/20 - 04/03/20 First Quarter < 192 04/03/20 - 07/01/20 Second Quarter < 181 07/01/20 - 10/02/20 Third Quarter < 181 10/02/20 - 01/04/21 Fourth Quarter < 187 OSWEGO CITY WATER** (10) 01/03/20 - 04/03/20 First Quarter < 193 04/03/20 - 07/01/20 Second Quarter < 183 07/01/20 - 10/02/20 Third Quarter < 182 10/02/20 - 01/04/21 Fourth Quarter < 183 NINE MILE POINT UNIT 2** (11, INLET) 01/03/20 - 04/03/20 First Quarter < 189 04/03/20 - 07/01/20 Second Quarter < 181 07/01/20 - 10/02/20 Third Quarter < 185 10/02/20 - 01/04/21 Fourth Quarter < 183

• Sample required by the ODCM

• • Optional sample location

• • • Corresponds to sample location noted on Figure 3.3-4 6-4

TABLE 6-4 CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES - 2020 Results in Units of pCi/liter +/- 1 Sigma SAMPLE COLLECTION I-131 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-La-140 LOCATION*** DATE FITZPATRICK* (03, INLET) 02/04/20 < 0.8 < 1 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 4 03/02/20 < 0.7 < 1 < 2 < 3 < 2 < 3 < 2 < 3 < 2 < 2 < 4 03/31/20 < 0.7 < 2 < 2 < 4 < 2 < 4 < 2 < 3 < 2 < 2 < 4 05/01/20 < 0.7 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 06/01/20 < 0.7 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 07/01/20 < 0.8 < 2 < 2 < 6 < 2 < 4 < 3 < 5 < 2 < 2 < 10 07/30/20 < 0.7 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 09/01/20 < 0.9 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 6 10/01/20 < 0.9 < 2 < 2 < 4 < 1 < 3 < 2 < 3 < 2 < 2 < 5 11/01/20 < 0.9 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 12/03/20 < 0.8 < 2 < 2 < 5 < 2 < 4 < 3 < 4 < 2 < 2 < 8 12/31/20 < 0.8 < 2 < 2 < 5 < 2 < 3 < 2 < 3 < 2 < 2 < 7 OSWEGO STEAM STATION* (08, CONTROL) 01/31/20 < 0.8 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 02/28/20 < 0.8 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 04/03/20 < 0.6 < 2 < 2 < 5 < 2 < 3 < 2 < 3 < 2 < 2 < 6 05/01/20 < 0.6 < 2 < 2 < 4 < 2 < 4 < 2 < 3 < 2 < 2 < 4 05/29/20 < 0.5 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 07/01/20 < 0.9 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 07/31/20 < 0.7 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 08/28/20 < 0.8 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 8 10/02/20 < 0.6 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 10/30/20 < 0.8 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 12/04/20 < 0.6 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 01/04/21 < 0.9 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6

• Sample required by the ODCM

• • • Corresponds to sample location noted on Figure 3.3-4 6-5

TABLE 6-4 (continued)

CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES - 2020 Results in Units of pCi/liter +/- 1 Sigma SAMPLE COLLECTION I-131 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-La-140 LOCATION*** DATE NINE MILE POINT UNIT 1** (09, INLET) 01/31/20 < 9 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 6 02/28/20 < 12 < 2 < 3 < 6 < 2 < 5 < 3 < 5 < 3 < 3 < 7 04/03/20 < 12 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 05/01/20 < 9 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 05/29/20 < 10 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 07/01/20 < 10 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 6 07/31/20 < 10 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 08/28/20 < 12 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 6 10/02/20 < 11 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 10/30/20 < 10 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 5 12/04/20 < 10 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 6 01/04/21 < 7 < 2 < 2 < 4 < 2 < 4 < 2 < 3 < 2 < 2 < 5 OSWEGO CITY WATER** (10) 01/31/20 < 9 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 7 02/28/20 < 9 < 2 < 2 < 5 < 2 < 3 < 2 < 4 < 2 < 2 < 6 04/03/20 < 13 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 8 05/01/20 < 9 < 2 < 2 < 4 < 2 < 4 < 2 < 4 < 2 < 2 < 6 05/29/20 < 10 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 07/01/20 < 10 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 6 07/31/20 < 10 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 08/28/20 < 14 < 2 < 2 < 5 < 2 < 3 < 2 < 4 < 2 < 2 < 7 10/02/20 < 10 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 10/30/20 < 9 < 2 < 2 < 4 < 2 < 4 < 2 < 3 < 2 < 2 < 6 12/04/20 < 12 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 01/04/21 < 8 < 2 < 2 < 4 < 2 < 4 < 2 < 4 < 2 < 2 < 5

• • Optional sample location

• • • Corresponds to sample location noted on Figure 3.3-4 6-6

TABLE 6-4 (continued)

CONCENTRATIONS OF GAMMA EMITTERS IN SURFACE WATER SAMPLES - 2020 Results in Units of pCi/liter +/- 1 Sigma SAMPLE COLLECTION I-131 Mn-54 Co-58 Fe-59 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 Ba-La-140 LOCATION*** DATE NINE MILE POINT UNIT 2** (11, INLET) 01/31/20 < 8 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 02/28/20 < 13 < 2 < 3 < 6 < 2 < 5 < 3 < 5 < 3 < 3 < 8 04/03/20 < 13 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 8 05/01/20 < 8 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 5 05/29/20 < 9 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 07/01/20 < 12 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 07/31/20 < 9 < 2 < 2 < 4 < 2 < 4 < 2 < 3 < 2 < 2 < 5 08/28/20 < 13 < 2 < 2 < 5 < 2 < 3 < 2 < 4 < 2 < 2 < 6 10/02/20 < 10 < 2 < 2 < 4 < 2 < 3 < 2 < 3 < 2 < 2 < 5 10/30/20 < 9 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6 12/04/20 < 10 < 2 < 2 < 4 < 2 < 4 < 2 < 4 < 2 < 2 < 6 01/04/21 < 8 < 2 < 2 < 5 < 2 < 4 < 2 < 4 < 2 < 2 < 6

• • Optional sample location

• • • Corresponds to sample location noted on Figure 3.3-4 6-7

TABLE 6-5 ENVIRONMENTAL AIRBORNE PARTICULATE SAMPLES - OFFSITE SAMPLE LOCATIONS - 2020 GROSS BETA ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE R1* R2* R3* R4* R5* D2** E** F** G**

12/31/19 - 01/07/20 12 +/- 1 17 +/- 1 17 +/- 1 16 +/- 1 16 +/- 1 16 +/- 1 18 +/- 1 17 +/- 1 15 +/- 1 01/07/20 - 01/14/20 12 +/- 1 12 +/- 1 10 +/- 1 13 +/- 1 11 +/- 1 12 +/- 1 13 +/- 1 14 +/- 1 10 +/- 1 01/14/20 - 01/21/20 15 +/- 1 18 +/- 1 17 +/- 1 17 +/- 1 17 +/- 1 18 +/- 1 15 +/- 1 15 +/- 1 14 +/- 1 01/21/20 - 01/28/20 14 +/- 1 11 +/- 1 13 +/- 1 14 +/- 1 13 +/- 1 15 +/- 1 14 +/- 1 14 +/- 1 15 +/- 1 01/28/20 - 02/04/20 11 +/- 1 11 +/- 1 11 +/- 1 11 +/- 1 14 +/- 1 13 +/- 1 10 +/- 1 12 +/- 1 12 +/- 1 02/04/20 - 02/11/20 12 +/- 1 14 +/- 1 14 +/- 1 18 +/- 1 15 +/- 1 15 +/- 1 16 +/- 1 14 +/- 1 14 +/- 1 02/11/20 - 02/18/20 20 +/- 1 19 +/- 1 20 +/- 1 21 +/- 1 18 +/- 1 21 +/- 1 19 +/- 1 21 +/- 1 19 +/- 1 02/18/20 - 02/25/20 16 +/- 1 18 +/- 1 17 +/- 1 17 +/- 1 21 +/- 1 18 +/- 1 18 +/- 1 18 +/- 1 21 +/- 1 02/25/20 - 03/03/20 17 +/- 1 17 +/- 1 16 +/- 1 17 +/- 1 18 +/- 1 17 +/- 1 15 +/- 1 16 +/- 1 18 +/- 1 03/03/20 - 03/10/20 18 +/- 1 15 +/- 1 17 +/- 1 19 +/- 1 19 +/- 1 18 +/- 1 16 +/- 1 15 +/- 1 19 +/- 1 03/10/20 - 03/17/20 16 +/- 1 15 +/- 1 17 +/- 1 15 +/- 1 17 +/- 1 14 +/- 1 14 +/- 1 13 +/- 1 17 +/- 1 03/17/20 - 03/24/20 17 +/- 1 17 +/- 1 17 +/- 1 19 +/- 1 16 +/- 1 18 +/- 1 19 +/- 1 16 +/- 1 8 +/- 1 03/24/20 - 03/31/20 12 +/- 1 11 +/- 1 15 +/- 1 11 +/- 1 15 +/- 1 12 +/- 1 13 +/- 1 13 +/- 1 7 +/- 1 03/31/20 - 04/07/20 11 +/- 1 11 +/- 1 10 +/- 1 11 +/- 1 12 +/- 1 11 +/- 1 12 +/- 1 12 +/- 1 6 +/- 1 04/07/20 - 04/14/20 16 +/- 1 15 +/- 1 19 +/- 1 17 +/- 1 16 +/- 1 17 +/- 1 16 +/- 1 15 +/- 1 9 +/- 1 04/14/20 - 04/21/20 15 +/- 1 17 +/- 1 16 +/- 1 19 +/- 1 17 +/- 1 18 +/- 1 16 +/- 1 18 +/- 1 16 +/- 1 04/21/20 - 04/28/20 21 +/- 1 21 +/- 1 22 +/- 1 20 +/- 1 22 +/- 1 21 +/- 1 22 +/- 2 20 +/- 1 21 +/- 1 04/28/20 - 05/05/20 14 +/- 1 12 +/- 1 10 +/- 1 12 +/- 1 13 +/- 1 10 +/- 1 12 +/- 1 11 +/- 1 12 +/- 1 05/05/20 - 05/12/20 11 +/- 1 12 +/- 1 11 +/- 1 11 +/- 1 13 +/- 1 14 +/- 1 13 +/- 1 12 +/- 1 12 +/- 1 05/12/20 - 05/19/20 18 +/- 1 16 +/- 1 16 +/- 1 15 +/- 1 18 +/- 1 17 +/- 1 17 +/- 1 15 +/- 1 15 +/- 1 05/19/20 - 05/27/20 15 +/- 1 16 +/- 1 15 +/- 1 12 +/- 1 15 +/- 1 14 +/- 1 15 +/- 1 16 +/- 1 16 +/- 1 05/27/20 - 06/02/20 12 +/- 1 14 +/- 1 14 +/- 1 16 +/- 1 15 +/- 1 11 +/- 1 12 +/- 1 13 +/- 1 13 +/- 1 06/02/20 - 06/09/20 18 +/- 1 15 +/- 1 18 +/- 1 18 +/- 1 16 +/- 1 16 +/- 1 16 +/- 1 17 +/- 1 18 +/- 1 06/09/20 - 06/16/20 11 +/- 1 11 +/- 1 10 +/- 1 8 +/- 1 9 +/- 1 8 +/- 1 7 +/- 1 8 +/- 1 12 +/- 1 06/16/20 - 06/23/20 19 +/- 1 18 +/- 1 17 +/- 1 18 +/- 1 16 +/- 1 13 +/- 1 16 +/- 1 14 +/- 1 15 +/- 1 06/23/20 - 06/30/20 16 +/- 1 17 +/- 1 15 +/- 1 15 +/- 1 16 +/- 1 14 +/- 1 17 +/- 1 19 +/- 1 21 +/- 1

• Sample required by the ODCM

• • Optional sample location 6-8

TABLE 6-5 (continued)

ENVIRONMENTAL AIRBORNE PARTICULATE SAMPLES - OFFSITE SAMPLE LOCATIONS - 2020 GROSS BETA ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE R1* R2* R3* R4* R5* D2** E** F** G**

06/30/20 - 07/07/20 20 +/- 1 18 +/- 1 19 +/- 1 17 +/- 1 15 +/- 1 18 +/- 1 18 +/- 1 23 +/- 1 18 +/- 1 07/07/20 - 07/14/20 23 +/- 1 21 +/- 1 21 +/- 1 21 +/- 1 15 +/- 1 18 +/- 1 19 +/- 1 21 +/- 1 22 +/- 1 07/14/20 - 07/21/20 18 +/- 1 19 +/- 1 16 +/- 1 18 +/- 1 17 +/- 1 15 +/- 1 19 +/- 1 18 +/- 1 18 +/- 1 07/21/20 - 07/28/20 16 +/- 1 19 +/- 1 18 +/- 1 19 +/- 1 16 +/- 1 20 +/- 1 19 +/- 1 19 +/- 1 18 +/- 1 07/28/20 - 08/04/20 16 +/- 1 15 +/- 1 15 +/- 1 14 +/- 1 13 +/- 1 14 +/- 1 14 +/- 1 15 +/- 1 13 +/- 1 08/04/20 - 08/11/20 18 +/- 1 18 +/- 1 16 +/- 1 20 +/- 1 19 +/- 1 16 +/- 1 19 +/- 1 18 +/- 1 18 +/- 1 08/11/20 - 08/18/20 19 +/- 1 19 +/- 1 19 +/- 1 21 +/- 1 16 +/- 1 21 +/- 1 18 +/- 1 21 +/- 1 19 +/- 1 08/18/20 - 08/25/20 20 +/- 1 22 +/- 1 22 +/- 1 22 +/- 1 22 +/- 1 19 +/- 1 22 +/- 1 23 +/- 1 22 +/- 1 08/25/20 - 09/01/20 14 +/- 1 10 +/- 1 13 +/- 1 12 +/- 1 9 +/- 1 12 +/- 1 11 +/- 1 12 +/- 1 11 +/- 1 09/01/20 - 09/09/20 14 +/- 1 12 +/- 1 10 +/- 1 14 +/- 1 12 +/- 1 12 +/- 1 12 +/- 1 14 +/- 1 14 +/- 1 09/09/20 - 09/15/20 11 +/- 1 12 +/- 1 12 +/- 1 12 +/- 1 11 +/- 1 12 +/- 1 11 +/- 1 10 +/- 1 12 +/- 1 09/15/20 - 09/22/20 13 +/- 1 14 +/- 1 13 +/- 1 14 +/- 1 15 +/- 1 12 +/- 1 13 +/- 1 13 +/- 1 13 +/- 1 09/22/20 - 09/29/20 30 +/- 2 26 +/- 2 29 +/- 2 26 +/- 1 26 +/- 1 24 +/- 1 24 +/- 1 25 +/- 1 28 +/- 2 09/29/20 - 10/06/20 12 +/- 1 11 +/- 1 12 +/- 1 12 +/- 1 13 +/- 1 9 +/- 1 11 +/- 1 12 +/- 1 11 +/- 1 10/06/20 - 10/13/20 18 +/- 1 16 +/- 1 16 +/- 1 17 +/- 1 17 +/- 1 15 +/- 1 17 +/- 1 16 +/- 1 20 +/- 1 10/13/20 - 10/20/20 14 +/- 1 15 +/- 1 16 +/- 1 13 +/- 1 14 +/- 1 13 +/- 1 15 +/- 1 12 +/- 1 14 +/- 1 10/20/20 - 10/27/20 14 +/- 1 16 +/- 1 14 +/- 1 16 +/- 1 14 +/- 1 15 +/- 1 15 +/- 1 16 +/- 1 19 +/- 1 10/27/20 - 11/03/20 17 +/- 1 18 +/- 1 18 +/- 1 18 +/- 1 15 +/- 1 17 +/- 1 16 +/- 1 17 +/- 1 18 +/- 1 11/03/20 - 11/10/20 23 +/- 1 26 +/- 2 25 +/- 1 25 +/- 2 23 +/- 1 21 +/- 1 25 +/- 2 26 +/- 2 25 +/- 1 11/10/20 - 11/17/20 15 +/- 1 19 +/- 1 20 +/- 1 17 +/- 1 17 +/- 1 16 +/- 1 16 +/- 1 18 +/- 1 19 +/- 1 11/17/20 - 11/24/20 16 +/- 1 14 +/- 1 15 +/- 1 18 +/- 1 17 +/- 1 15 +/- 1 15 +/- 1 16 +/- 1 16 +/- 1 11/24/20 - 12/01/20 21 +/- 1 22 +/- 1 21 +/- 1 24 +/- 2 23 +/- 2 19 +/- 1 20 +/- 1 20 +/- 1 22 +/- 1 12/01/20 - 12/08/20 14 +/- 1 14 +/- 1 13 +/- 1 9 +/- 1 10 +/- 1 10 +/- 1 14 +/- 1 11 +/- 1 13 +/- 1 12/08/20 - 12/15/20 26 +/- 2 24 +/- 2 24 +/- 1 25 +/- 2 23 +/- 1 25 +/- 2 22 +/- 1 27 +/- 2 25 +/- 2 12/15/20 - 12/22/20 18 +/- 1 17 +/- 1 19 +/- 1 20 +/- 1 19 +/- 1 17 +/- 1 18 +/- 1 18 +/- 1 15 +/- 1 12/22/20 - 12/29/20 16 +/- 1 16 +/- 1 14 +/- 1 15 +/- 1 14 +/- 1 15 +/- 1 16 +/- 1 14 +/- 1 14 +/- 1

• Sample required by the ODCM

• • Optional sample location 6-9

TABLE 6-6 ENVIRONMENTAL AIRBORNE PARTICULATE SAMPLES - ONSITE SAMPLE LOCATIONS - 2020 GROSS BETA ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE D1** G** H** I** J** K**

12/30/19 - 01/06/20 14 +/- 1 15 +/- 1 12 +/- 1 15 +/- 1 18 +/- 1 14 +/- 1 01/06/20 - 01/13/20 13 +/- 1 11 +/- 1 14 +/- 1 13 +/- 1 12 +/- 1 12 +/- 1 01/13/20 - 01/20/20 17 +/- 1 18 +/- 1 16 +/- 1 15 +/- 1 16 +/- 1 17 +/- 1 01/20/20 - 01/27/20 14 +/- 1 15 +/- 1 15 +/- 1 10 +/- 1 13 +/- 1 13 +/- 1 01/27/20 - 02/03/20 12 +/- 1 10 +/- 1 8 +/- 1 9 +/- 1 9 +/- 1 9 +/- 1 02/03/20 - 02/10/20 17 +/- 1 15 +/- 1 18 +/- 1 15 +/- 1 15 +/- 1 15 +/- 1 02/10/20 - 02/17/20 20 +/- 1 18 +/- 1 17 +/- 1 19 +/- 1 19 +/- 1 19 +/- 1 02/17/20 - 02/24/20 19 +/- 1 17 +/- 1 16 +/- 1 20 +/- 1 20 +/- 1 18 +/- 1 02/24/20 - 03/02/20 17 +/- 1 22 +/- 1 17 +/- 1 18 +/- 1 18 +/- 1 17 +/- 1 03/02/20 - 03/09/20 16 +/- 1 18 +/- 1 15 +/- 1 15 +/- 1 15 +/- 1 16 +/- 1 03/09/20 - 03/16/20 16 +/- 1 14 +/- 1 12 +/- 1 13 +/- 1 15 +/- 1 14 +/- 1 03/16/20 - 03/23/20 17 +/- 1 17 +/- 1 14 +/- 1 19 +/- 1 18 +/- 1 18 +/- 1 03/23/20 - 03/30/20 11 +/- 1 12 +/- 1 10 +/- 1 11 +/- 1 10 +/- 1 12 +/- 1 03/30/20 - 04/06/20 8 +/- 1 8 +/- 1 12 +/- 1 9 +/- 1 13 +/- 1 11 +/- 1 04/06/20 - 04/13/20 20 +/- 1 17 +/- 1 12 +/- 1 15 +/- 1 15 +/- 1 14 +/- 1 04/13/20 - 04/20/20 16 +/- 1 17 +/- 1 17 +/- 1 17 +/- 1 17 +/- 1 16 +/- 1 04/20/20 - 04/27/20 20 +/- 1 18 +/- 1 18 +/- 1 23 +/- 1 23 +/- 1 22 +/- 1 04/27/20 - 05/04/20 12 +/- 1 13 +/- 1 11 +/- 1 14 +/- 1 11 +/- 1 10 +/- 1 05/04/20 - 05/11/20 12 +/- 1 11 +/- 1 11 +/- 1 12 +/- 1 12 +/- 1 10 +/- 1 05/11/20 - 05/18/20 (1) 15 +/- 1 14 +/- 1 18 +/- 1 16 +/- 1 17 +/- 1 05/18/20 - 05/26/20 13 +/- 1 17 +/- 1 12 +/- 1 12 +/- 1 12 +/- 1 12 +/- 1 05/26/20 - 06/01/20 13 +/- 1 16 +/- 1 15 +/- 1 17 +/- 1 16 +/- 1 15 +/- 1 06/01/20 - 06/08/20 17 +/- 1 17 +/- 1 18 +/- 1 19 +/- 1 15 +/- 1 13 +/- 1 06/08/20 - 06/15/20 8 +/- 1 12 +/- 1 9 +/- 1 10 +/- 1 9 +/- 1 9 +/- 1 06/15/20 - 06/22/20 17 +/- 1 14 +/- 1 15 +/- 1 14 +/- 1 15 +/- 1 11 +/- 1 06/22/20 - 06/29/20 20 +/- 1 19 +/- 1 20 +/- 1 21 +/- 1 18 +/- 1 14 +/- 1

• • Optional sample location (1) No sample due to pump malfunction.

6 - 10

TABLE 6-6 (continued)

ENVIRONMENTAL AIRBORNE PARTICULATE SAMPLES - ONSITE SAMPLE LOCATIONS - 2020 GROSS BETA ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE D1** G** H** I** J** K**

06/29/20 - 07/06/20 17 +/- 1 19 +/- 1 18 +/- 1 17 +/- 1 19 +/- 1 13 +/- 1 07/06/20 - 07/13/20 21 +/- 1 23 +/- 1 16 +/- 1 20 +/- 1 20 +/- 1 15 +/- 1 07/13/20 - 07/20/20 15 +/- 1 19 +/- 1 16 +/- 1 17 +/- 1 17 +/- 1 14 +/- 1 07/20/20 - 07/27/20 16 +/- 1 18 +/- 1 14 +/- 1 18 +/- 1 16 +/- 1 15 +/- 1 07/27/20 - 08/03/20 14 +/- 1 15 +/- 1 14 +/- 1 15 +/- 1 16 +/- 1 14 +/- 1 08/03/20 - 08/10/20 14 +/- 1 17 +/- 1 15 +/- 1 18 +/- 1 19 +/- 1 15 +/- 1 08/10/20 - 08/17/20 16 +/- 1 23 +/- 2 22 +/- 1 25 +/- 2 23 +/- 1 22 +/- 1 08/17/20 - 08/24/20 17 +/- 1 19 +/- 1 18 +/- 1 17 +/- 1 19 +/- 1 17 +/- 1 08/24/20 - 08/31/20 16 +/- 1 15 +/- 1 12 +/- 1 13 +/- 1 15 +/- 1 14 +/- 1 08/31/20 - 09/08/20 14 +/- 1 12 +/- 1 13 +/- 1 14 +/- 1 13 +/- 1 13 +/- 1 09/08/20 - 09/14/20 12 +/- 1 12 +/- 1 10 +/- 1 11 +/- 1 10 +/- 1 12 +/- 1 09/14/20 - 09/21/20 10 +/- 1 13 +/- 1 11 +/- 1 10 +/- 1 9 +/- 1 9 +/- 1 09/21/20 - 09/28/20 29 +/- 2 28 +/- 2 23 +/- 1 30 +/- 2 24 +/- 1 22 +/- 1 09/28/20 - 10/05/20 11 +/- 1 12 +/- 1 10 +/- 1 12 +/- 1 8 +/- 1 10 +/- 1 10/05/20 - 10/12/20 18 +/- 1 14 +/- 1 19 +/- 1 18 +/- 1 16 +/- 1 17 +/- 1 10/12/20 - 10/19/20 15 +/- 1 12 +/- 1 14 +/- 1 13 +/- 1 15 +/- 1 14 +/- 1 10/19/20 - 10/26/20 16 +/- 1 14 +/- 1 14 +/- 1 16 +/- 1 16 +/- 1 13 +/- 1 10/26/20 - 11/02/20 17 +/- 1 16 +/- 1 13 +/- 1 16 +/- 1 17 +/- 1 13 +/- 1 11/02/20 - 11/09/20 20 +/- 1 23 +/- 1 (1) 22 +/- 1 24 +/- 1 21 +/- 1 11/09/20 - 11/16/20 19 +/- 1 20 +/- 1 (1) 17 +/- 1 18 +/- 1 16 +/- 1 11/16/20 - 11/23/20 16 +/- 1 15 +/- 1 (1) 18 +/- 1 17 +/- 1 13 +/- 1 11/23/20 - 11/30/20 16 +/- 1 25 +/- 2 (1) 22 +/- 1 22 +/- 1 19 +/- 1 11/30/20 - 12/07/20 12 +/- 1 12 +/- 1 (1) 14 +/- 1 12 +/- 1 11 +/- 1 12/07/20 - 12/14/20 24 +/- 1 26 +/- 2 (1) 24 +/- 1 23 +/- 1 28 +/- 2 12/14/20 - 12/21/20 15 +/- 1 14 +/- 1 (1) 15 +/- 1 16 +/- 1 14 +/- 1 12/21/20 - 12/28/20 19 +/- 1 18 +/- 1 (1) 17 +/- 1 20 +/- 1 17 +/- 1

• • Optional sample location (1) No sample due to pump malfunction.

6 - 11

TABLE 6-7 ENVIRONMENTAL CHARCOAL CARTRIDGE SAMPLES - OFFSITE SAMPLE LOCATIONS - 2020 I-131 ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE R1* R2* R3* R4* R5* D2** E** F** G**

12/31/19 - 01/07/20 < 15 < 8 < 16 < 16 < 8 < 16 < 16 < 16 < 16 01/07/20 - 01/14/20 < 13 < 12 < 14 < 18 < 17 < 17 < 17 < 15 < 13 01/14/20 - 01/21/20 < 16 < 17 < 16 < 13 < 12 < 12 < 12 < 13 < 16 01/21/20 - 01/28/20 < 15 < 15 < 15 < 20 < 8 < 20 < 20 < 20 < 14 01/28/20 - 02/04/20 < 21 < 8 < 21 < 26 < 26 < 26 < 26 < 11 < 20 02/04/20 - 02/11/20 < 17 < 16 < 17 < 19 < 19 < 19 < 19 < 9 < 17 02/11/20 - 02/18/20 < 27 < 25 < 27 < 26 < 26 < 26 < 26 < 11 < 26 02/18/20 - 02/25/20 < 13 < 12 < 13 < 19 < 19 < 19 < 16 < 18 < 13 02/25/20 - 03/03/20 < 12 < 11 < 12 < 18 < 17 < 18 < 7 < 16 < 11 03/03/20 - 03/10/20 < 28 < 26 < 12 < 11 < 26 < 26 < 26 < 24 < 27 03/10/20 - 03/17/20 < 16 < 15 < 9 < 15 < 18 < 18 < 18 < 16 < 16 03/17/20 - 03/24/20 < 13 < 12 < 13 < 7 < 14 < 14 < 15 < 13 < 7 03/24/20 - 03/31/20 < 6 < 6 < 6 < 14 < 13 < 11 < 13 < 13 < 7 03/31/20 - 04/07/20 < 18 < 18 < 19 < 8 < 15 < 15 < 15 < 15 < 18 04/07/20 - 04/14/20 < 11 < 11 < 11 < 13 < 14 < 12 < 14 < 14 < 11 04/14/20 - 04/21/20 < 16 < 17 < 17 < 9 < 18 < 18 < 18 < 18 < 15 04/21/20 - 04/28/20 < 17 < 18 < 18 < 16 < 17 < 9 < 17 < 17 < 17 04/28/20 - 05/05/20 < 17 < 17 < 17 < 15 < 16 < 15 < 12 < 16 < 13 05/05/20 - 05/12/20 < 27 < 28 < 28 < 14 < 15 < 15 < 9 < 15 < 26 05/12/20 - 05/19/20 < 38 < 36 < 35 < 19 < 21 < 10 < 20 < 19 < 14 05/19/20 - 05/27/20 < 15 < 16 < 15 < 11 < 11 < 11 < 11 < 11 < 15 05/27/20 - 06/02/20 < 16 < 10 < 16 < 29 < 29 < 32 < 30 < 12 < 15 06/02/20 - 06/09/20 < 15 < 15 < 15 < 20 < 20 < 20 < 11 < 19 < 14 06/09/20 - 06/16/20 < 28 < 28 < 28 < 10 < 19 < 19 < 19 < 18 < 27 06/16/20 - 06/23/20 < 22 < 22 < 21 < 17 < 18 < 18 < 18 < 14 < 21 06/23/20 - 06/30/20 < 30 < 13 < 29 < 15 < 14 < 15 < 15 < 9 < 28

• Sample required by the ODCM

• • Optional sample location 6 - 12

TABLE 6-7 (continued)

ENVIRONMENTAL CHARCOAL CARTRIDGE SAMPLES - OFFSITE SAMPLE LOCATIONS - 2020 I-131 ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE R1* R2* R3* R4* R5* D2** E** F** G**

06/30/20 - 07/07/20 < 22 < 22 < 21 < 13 < 13 < 13 < 7 < 13 < 21 07/07/20 - 07/14/20 < 28 < 27 < 27 < 19 < 19 < 12 < 19 < 20 < 26 07/14/20 - 07/21/20 < 20 < 20 < 20 < 14 < 14 < 15 < 8 < 14 < 20 07/21/20 - 07/28/20 < 24 < 22 < 23 < 23 < 23 < 24 < 23 < 9 < 23 07/28/20 - 08/04/20 < 21 < 20 < 20 < 23 < 23 < 24 < 23 < 9 < 20 08/04/20 - 08/11/20 < 25 < 25 < 25 < 28 < 30 < 28 < 27 < 11 < 25 08/11/20 - 08/18/20 < 25 < 24 < 24 < 19 < 18 < 19 < 18 < 14 < 24 08/18/20 - 08/25/20 < 23 < 24 < 23 < 21 < 20 < 10 < 20 < 19 < 23 08/25/20 - 09/01/20 < 24 < 25 < 24 < 31 < 30 < 13 < 30 < 29 < 24 09/01/20 - 09/09/20 < 22 < 21 < 22 < 22 < 22 < 10 < 22 < 21 < 22 09/09/20 - 09/15/20 < 32 < 33 < 33 < 35 < 34 < 37 < 35 < 14 < 32 09/15/20 - 09/22/20 < 21 < 22 < 21 < 27 < 12 < 29 < 27 < 26 < 21 09/22/20 - 09/29/20 < 32 < 33 < 32 < 28 < 28 < 12 < 28 < 27 < 32 09/29/20 - 10/06/20 < 34 < 32 < 33 < 25 < 24 < 25 < 24 < 11 < 33 10/06/20 - 10/13/20 < 12 < 28 < 29 < 26 < 25 < 11 < 25 < 25 < 29 10/13/20 - 10/20/20 < 15 < 15 < 12 < 20 < 19 < 20 < 19 < 10 < 15 10/20/20 - 10/27/20 < 27 < 27 < 28 < 26 < 25 < 26 < 25 < 11 < 28 10/27/20 - 11/03/20 < 17 < 16 < 17 < 19 < 8 < 19 < 18 < 19 < 18 11/03/20 - 11/10/20 < 8 < 22 < 21 < 21 < 21 < 20 < 21 < 22 < 19 11/10/20 - 11/17/20 < 16 < 16 < 16 < 17 < 17 < 16 < 17 < 7 < 16 11/17/20 - 11/24/20 < 29 < 30 < 26 < 29 < 33 < 30 < 30 < 31 < 30 11/24/20 - 12/01/20 < 25 < 11 < 25 < 28 < 27 < 26 < 27 < 27 < 26 12/01/20 - 12/08/20 < 27 < 27 < 27 < 26 < 25 < 26 < 25 < 10 < 27 12/08/20 - 12/15/20 < 18 < 9 < 17 < 17 < 19 < 19 < 20 < 21 < 17 12/15/20 - 12/22/20 < 12 < 10 < 12 < 11 < 13 < 13 < 14 < 13 < 12 12/21/20 - 12/29/20 < 19 < 20 < 19 < 16 < 8 < 15 < 15 < 16 < 19

• Sample required by the ODCM

• • Optional sample location 6 - 13

TABLE 6-8 ENVIRONMENTAL CHARCOAL CARTRIDGE SAMPLES - ONSITE SAMPLE LOCATIONS - 2020 I-131 ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE D1** G** H** I** J** K**

12/30/19 - 01/06/20 < 16 < 17 < 16 < 16 < 16 < 13 01/06/20 - 01/13/20 < 22 < 15 < 9 < 22 < 22 < 21 01/13/20 - 01/20/20 < 28 < 15 < 12 < 28 < 28 < 27 01/20/20 - 01/27/20 < 17 < 14 < 9 < 17 < 17 < 17 01/27/20 - 02/03/20 < 18 < 23 < 16 < 18 < 18 < 18 02/03/20 - 02/10/20 < 16 < 13 < 8 < 16 < 16 < 16 02/10/20 - 02/17/20 < 17 < 12 < 15 < 18 < 17 < 17 02/17/20 - 02/24/20 < 24 < 12 < 10 < 24 < 24 < 23 02/24/20 - 03/02/20 < 28 < 11 < 29 < 12 < 29 < 27 03/02/20 - 03/09/20 < 18 < 28 < 15 < 16 < 18 < 18 03/09/20 - 03/16/20 < 18 < 18 < 18 < 17 < 9 < 18 03/16/20 - 03/23/20 < 14 < 14 < 14 < 13 < 7 < 14 03/23/20 - 03/30/20 < 21 < 6 < 10 < 21 < 20 < 22 03/30/20 - 04/06/20 < 24 < 17 < 11 < 24 < 23 < 25 04/06/20 - 04/13/20 < 19 < 10 < 9 < 19 < 19 < 20 04/13/20 - 04/20/20 < 19 < 9 < 19 < 17 < 19 < 19 04/20/20 - 04/27/20 < 15 < 9 < 15 < 12 < 15 < 14 04/27/20 - 05/04/20 < 22 < 19 < 22 < 9 < 22 < 22 05/04/20 - 05/11/20 < 20 < 13 < 20 < 14 < 20 < 19 05/11/20 - 05/18/20 (1) < 40 < 23 < 24 < 22 < 21 05/18/20 - 05/26/20 < 17 < 8 < 19 < 19 < 16 < 19 05/26/20 - 06/01/20 < 29 < 18 < 32 < 33 < 15 < 32 06/01/20 - 06/08/20 < 19 < 8 < 20 < 17 < 20 < 20 06/08/20 - 06/15/20 < 33 < 13 < 36 < 16 < 37 < 35 06/15/20 - 06/22/20 < 17 < 11 < 17 < 10 < 17 < 17 06/22/20 - 06/29/20 < 18 < 33 < 18 < 19 < 19 < 9

• • Optional sample location (1) No sample due to pump malfunction.

6 - 14

TABLE 6-8 (continued)

ENVIRONMENTAL CHARCOAL CARTRIDGE SAMPLES - ONSITE SAMPLE LOCATIONS - 2020 I-131 ACTIVITY 10E-3 pCi/m3 +/- 1 Sigma COLLECTION DATE D1** G** H** I** J** K**

06/29/20 - 07/06/20 < 17 < 10 < 16 < 9 < 17 < 15 07/06/20 - 07/13/20 < 22 < 13 < 23 < 10 < 23 < 22 07/13/20 - 07/20/20 < 24 < 10 < 24 < 10 < 23 < 24 07/20/20 - 07/27/20 < 27 < 11 < 27 < 12 < 26 < 27 07/27/20 - 08/03/20 < 21 < 10 < 9 < 21 < 21 < 21 08/03/20 - 08/10/20 < 18 < 12 < 18 < 16 < 18 < 18 08/10/20 - 08/17/20 < 20 < 11 < 19 < 10 < 19 < 19 08/17/20 - 08/24/20 < 27 < 11 < 27 < 12 < 27 < 27 08/24/20 - 08/31/20 < 27 < 11 < 27 < 12 < 26 < 27 08/31/20 - 09/08/20 < 26 < 10 < 25 < 11 < 25 < 25 09/08/20 - 09/14/20 < 36 < 15 < 36 < 16 < 36 < 36 09/14/20 - 09/21/20 < 28 < 10 < 27 < 12 < 28 < 28 09/21/20 - 09/28/20 < 35 < 14 < 35 < 16 < 35 < 35 09/28/20 - 10/05/20 < 28 < 14 < 12 < 27 < 29 < 28 10/05/20 - 10/12/20 < 34 < 29 < 35 < 15 < 34 < 34 10/12/20 - 10/19/20 < 19 < 16 < 20 < 10 < 19 < 19 10/19/20 - 10/26/20 < 24 < 12 < 24 < 11 < 24 < 23 10/26/20 - 11/02/20 < 20 < 9 < 21 < 21 < 21 < 18 11/02/20 - 11/09/20 < 20 < 20 (1) < 20 < 9 < 19 11/09/20 - 11/16/20 < 17 < 8 (1) < 17 < 17 < 17 11/16/20 - 11/23/20 < 48 < 47 (1) < 48 < 21 < 45 11/23/20 - 11/30/20 < 27 < 27 (1) < 27 < 26 < 12 11/30/20 - 12/07/20 < 20 < 13 (1) < 21 < 22 < 8 12/07/20 - 12/14/20 < 13 < 31 (1) < 30 < 29 < 31 12/14/20 - 12/21/20 < 10 < 22 (1) < 24 < 23 < 23 12/21/20 - 12/28/20 < 18 < 9 (1) < 17 < 17 < 14

• • Optional sample location (1) No sample due to pump malfunction.

6 - 15

TABLE 6-9 CONCENTRATIONS OF GAMMA EMITTERS IN QUARTERLY COMPOSITES AIR PARTICULATE SAMPLES - 2020 Results in Units of 10E-3 pCi/m3 +/- 1 Sigma OFFSITE SAMPLE LOCATIONS SAMPLE COLLECTION Be-7 K-40 Mn-54 Co-58 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 LOCATION DATE R1* 12/31/19 - 03/31/20 84 +/- 9 < 18 < 1 < 2 < 2 < 2 < 2 < 3 < 1 < 1 03/31/20 - 06/30/20 140 +/- 11 < 22 < 1 < 1 < 1 < 2 < 1 < 2 < 1 < 1 06/30/20 - 09/29/20 115 +/- 11 < 19 < 2 < 2 < 1 < 2 < 2 < 2 < 1 < 1 09/29/20 - 12/29/20 67 +/- 10 < 20 < 1 < 2 < 1 < 3 < 2 < 2 < 1 < 1 R2* 12/31/19 - 03/31/20 93 +/- 9 < 20 < 1 < 1 < 1 < 3 < 1 < 3 < 1 < 1 03/31/20 - 06/30/20 151 +/- 14 < 31 < 2 < 3 < 3 < 4 < 3 < 5 < 2 < 2 06/30/20 - 09/29/20 123 +/- 12 < 17 < 1 < 2 < 1 < 5 < 3 < 3 < 2 < 1 09/29/20 - 12/29/20 97 +/- 11 < 31 < 2 < 3 < 2 < 5 < 3 < 6 < 2 < 2 R3* 12/31/19 - 03/31/20 94 +/- 10 < 23 < 1 < 2 < 1 < 4 < 2 < 4 < 2 < 1 03/31/20 - 06/30/20 126 +/- 13 < 31 < 2 < 3 < 2 < 5 < 3 < 6 < 2 < 2 06/30/20 - 09/29/20 130 +/- 12 < 28 < 2 < 2 < 2 < 4 < 3 < 3 < 2 < 1 09/29/20 - 12/29/20 82 +/- 9 < 16 < 1 < 1 < 1 < 3 < 2 < 3 < 1 < 1 R4* 12/31/19 - 03/31/20 97 +/- 9 < 21 < 1 < 1 < 1 < 3 < 2 < 3 < 1 < 1 03/31/20 - 06/30/20 138 +/- 14 < 36 < 2 < 3 < 2 < 5 < 4 < 6 < 2 < 2 06/30/20 - 09/29/20 114 +/- 10 < 22 < 2 < 2 < 1 < 3 < 3 < 4 < 1 < 1 09/29/20 - 12/29/20 84 +/- 9 < 14 < 1 < 1 < 1 < 3 < 2 < 3 < 1 < 1 R5* 12/31/19 - 03/31/20 105 +/- 10 < 27 < 2 < 3 < 2 < 4 < 3 < 4 < 2 < 2 03/31/20 - 06/30/20 124 +/- 10 < 20 < 1 < 2 < 1 < 3 < 2 < 3 < 1 < 1 06/30/20 - 09/29/20 125 +/- 11 < 27 < 2 < 3 < 2 < 5 < 3 < 7 < 2 < 2 09/29/20 - 12/29/20 80 +/- 9 < 24 < 1 < 2 < 2 < 3 < 2 < 4 < 1 < 1

• Sample required by the ODCM 6 - 16

TABLE 6-9 (continued)

CONCENTRATIONS OF GAMMA EMITTERS IN QUARTERLY COMPOSITES AIR PARTICULATE SAMPLES - 2020 Results in Units of 10E-3 pCi/m3 +/- 1 Sigma OFFSITE SAMPLE LOCATIONS SAMPLE COLLECTION Be-7 K-40 Mn-54 Co-58 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 LOCATION DATE D2** 12/31/19 - 03/31/20 101 +/- 10 < 21 < 1 < 2 < 1 < 3 < 2 < 3 < 1 < 1 03/31/20 - 06/30/20 115 +/- 10 < 19 < 1 < 2 < 1 < 3 < 2 < 3 < 1 < 1 06/30/20 - 09/29/20 98 +/- 10 < 17 < 1 < 2 < 1 < 2 < 2 < 3 < 1 < 1 09/29/20 - 12/29/20 71 +/- 9 < 16 < 1 < 1 < 1 < 3 < 2 < 3 < 1 < 1 E** 12/31/19 - 03/31/20 93 +/- 8 < 26 < 1 < 2 < 1 < 3 < 2 < 3 < 1 < 1 03/31/20 - 06/30/20 133 +/- 13 < 22 < 1 < 2 < 1 < 3 < 2 < 4 < 2 < 1 06/30/20 - 09/29/20 102 +/- 9 < 18 < 1 < 2 < 1 < 2 < 2 < 3 < 1 < 1 09/29/20 - 12/29/20 84 +/- 10 < 21 < 1 < 1 < 1 < 3 < 2 < 3 < 1 < 1 F** 12/31/19 - 03/31/20 83 +/- 8 < 19 < 1 < 1 < 1 < 2 < 1 < 2 < 1 < 1 03/31/20 - 06/30/20 126 +/- 11 < 15 < 1 < 1 < 1 < 2 < 2 < 3 < 1 < 1 06/30/20 - 09/29/20 99 +/- 9 < 18 < 1 < 2 < 1 < 3 < 2 < 2 < 1 < 1 09/29/20 - 12/29/20 95 +/- 10 < 23 < 1 < 2 < 2 < 3 < 2 < 4 < 1 < 1 G** 12/31/19 - 03/31/20 77 +/- 10 < 28 < 1 < 2 < 1 < 3 < 2 < 4 < 1 < 1 03/31/20 - 06/30/20 128 +/- 11 < 23 < 1 < 2 < 1 < 3 < 2 < 4 < 1 < 1 06/30/20 - 09/29/20 101 +/- 9 < 20 < 1 < 1 < 1 < 3 < 2 < 3 < 1 < 1 09/29/20 - 12/29/20 80 +/- 13 < 33 < 2 < 2 < 2 < 5 < 2 < 4 < 2 < 1

• • Optional sample location 6 - 17

TABLE 6-9 (continued)

CONCENTRATIONS OF GAMMA EMITTERS IN QUARTERLY COMPOSITES AIR PARTICULATE SAMPLES - 2020 Results in Units of 10E-3 pCi/m3 +/- 1 Sigma ONSITE SAMPLE LOCATIONS SAMPLE COLLECTION Be-7 K-40 Mn-54 Co-58 Co-60 Zn-65 Nb-95 Zr-95 Cs-134 Cs-137 LOCATION DATE D1** 12/30/19 - 03/30/20 89 +/- 9 < 20 < 1 < 1 < 1 < 2 < 2 < 3 < 1 < 1 03/30/20 - 06/29/20 158 +/- 12 < 20 < 1 < 2 < 1 < 4 < 2 < 3 < 1 < 1 06/29/20 - 09/28/20 103 +/- 11 < 29 < 1 < 1 < 1 < 4 < 2 < 4 < 1 < 1 09/28/20 - 12/28/20 78 +/- 9 < 17 < 1 < 2 < 1 < 3 < 1 < 2 < 1 < 1 G** 12/30/19 - 03/30/20 78 +/- 13 < 30 < 2 < 3 < 2 < 4 < 3 < 5 < 2 < 2 03/30/20 - 06/29/20 131 +/- 11 < 18 < 1 < 2 < 1 < 2 < 1 < 3 < 1 < 1 06/29/20 - 09/28/20 142 +/- 10 < 15 < 1 < 2 < 1 < 2 < 2 < 3 < 1 < 1 09/28/20 - 12/28/20 100 +/- 10 < 21 < 1 < 2 < 1 < 3 < 2 < 4 < 1 < 1 H** 12/30/19 - 03/30/20 80 +/- 10 < 26 < 1 < 2 < 2 < 3 < 2 < 4 < 2 < 1 03/30/20 - 06/29/20 112 +/- 11 < 20 < 1 < 2 < 1 < 2 < 2 < 3 < 1 < 1 06/29/20 - 09/28/20 96 +/- 12 < 24 < 2 < 3 < 2 < 4 < 2 < 4 < 2 < 1 09/28/20 - 11/02/20 77 +/- 16 < 35 < 2 < 3 < 3 < 6 < 5 < 9 < 2 < 2 I** 12/30/19 - 03/30/20 79 +/- 9 < 18 < 1 < 2 < 1 < 2 < 1 < 2 < 1 < 1 03/30/20 - 06/29/20 135 +/- 11 < 17 < 1 < 2 < 1 < 3 < 2 < 3 < 1 < 1 06/29/20 - 09/28/20 114 +/- 10 < 19 < 1 < 1 < 2 < 4 < 2 < 4 < 1 < 1 09/28/20 - 12/28/20 89 +/- 9 < 17 < 1 < 2 < 1 < 2 < 1 < 3 < 1 < 1 J** 12/30/19 - 03/30/20 113 +/- 13 < 38 < 2 < 3 < 2 < 4 < 3 < 5 < 2 < 2 03/30/20 - 06/29/20 148 +/- 11 < 19 < 1 < 2 < 0 < 3 < 2 < 3 < 1 < 1 06/29/20 - 09/28/20 113 +/- 10 < 18 < 1 < 2 < 1 < 3 < 2 < 3 < 1 < 1 09/28/20 - 12/28/20 72 +/- 10 < 25 < 1 < 2 < 2 < 3 < 2 < 4 < 1 < 1 K** 12/30/19 - 03/30/20 101 +/- 9 < 26 < 1 < 2 < 1 < 3 < 2 < 4 < 2 < 1 03/30/20 - 06/29/20 107 +/- 11 < 23 < 2 < 2 < 2 < 4 < 2 < 4 < 1 < 1 06/29/20 - 09/28/20 95 +/- 12 < 23 < 1 < 1 < 1 < 3 < 2 < 3 < 1 < 1 09/28/20 - 12/28/20 72 +/- 8 < 17 < 1 < 1 < 1 < 3 < 2 < 2 < 1 < 1

• • Optional sample location 6 - 18

TABLE 6-10 DIRECT RADIATION MEASUREMENT RESULTS - 2020 Results in mrem/std. Month +/- 1 Sigma LOCATION JAN - MAR APR - JUN JUL - SEP OCT - DEC DEGREES & DISTANCE NO. DESCRIPTION (1) 3 D1 Onsite 11.9 +/- 0.5 14.7 +/- 0.5 10.7 +/- 0.5 14.5 +/- 0.8 71º at 0.3 miles 4 D2 Onsite 5.4 +/- 0.3 6.2 +/- 0.2 5.7 +/- 0.3 5.6 +/- 0.3 143º at 0.4 miles 5 E Onsite 5.5 +/- 0.2 6.4 +/- 0.2 5.7 +/- 0.2 5.5 +/- 0.3 180º at 0.3 miles 6 F Onsite 4.6 +/- 0.2 5.6 +/- 0.2 5.1 +/- 0.2 5.0 +/- 0.2 213º at 0.5 miles 7* G Onsite 4.5 +/- 0.2 5.3 +/- 0.1 4.9 +/- 0.2 4.7 +/- 0.3 245º at 0.7 miles 8* R5 Offsite Control 5.3 +/- 0.2 6.2 +/- 0.2 6.0 +/- 0.2 5.7 +/- 0.3 42º at 16.2 miles 9 D1 Offsite - State Route 3 4.9 +/- 0.2 5.8 +/- 0.2 5.2 +/- 0.2 5.1 +/- 0.2 80º at 11.4 miles 10 D2 Offsite 4.7 +/- 0.2 5.5 +/- 0.2 5.0 +/- 0.2 4.9 +/- 0.2 118º at 9.0 miles 11 E Offsite 4.5 +/- 0.2 5.4 +/- 0.2 4.9 +/- 0.2 4.8 +/- 0.2 162º at 7.1 miles 12 F Offsite 4.6 +/- 0.2 5.4 +/- 0.2 5.0 +/- 0.2 4.9 +/- 0.2 192º at 7.6 miles 13 G Offsite 4.8 +/- 0.2 5.6 +/- 0.3 5.2 +/- 0.2 4.8 +/- 0.2 226º at 5.4 miles 14* DeMass Rd., SW Oswego - Control 5.1 +/- 0.2 5.6 +/- 0.2 5.5 +/- 0.3 5.1 +/- 0.2 227º at 12.5 miles 15* Pole 66, W. Boundary - Bible Camp 4.8 +/- 0.2 5.4 +/- 0.2 5.1 +/- 0.2 5.1 +/- 0.2 240º at 0.9 miles 18* Energy Info. Center - Lamp Post, SW 5.4 +/- 0.2 6.3 +/- 0.2 5.8 +/- 0.3 5.5 +/- 0.3 268º at 0.4 miles 19 East Boundary - JAF, Pole 9 5.3 +/- 0.2 5.8 +/- 0.2 5.8 +/- 0.2 5.6 +/- 0.2 83º at 1.4 miles 23* H Onsite 5.3 +/- 0.3 6.0 +/- 0.2 5.6 +/- 0.2 5.5 +/- 0.3 73º at 0.8 miles 24 I Onsite 4.8 +/- 0.2 5.2 +/- 0.2 4.8 +/- 0.2 4.6 +/- 0.3 95º at 0.8 miles 25 J Onsite 5.0 +/- 0.2 5.6 +/- 0.2 5.2 +/- 0.2 5.0 +/- 0.2 109º at 0.9 miles 26 K Onsite 4.7 +/- 0.2 5.4 +/- 0.2 5.1 +/- 0.3 4.7 +/- 0.2 132º at 0.5 miles 27 N. Fence, N. of Switchyard, JAF 19.9 +/- 0.9 21.1 +/- 1.0 15.4 +/- 0.7 22.8 +/- 1.2 60º at 0.4 miles 28 N. Light Pole, N. of Screenhouse, JAF 21.9 +/- 1.2 22.7 +/- 1.5 16.6 +/- 0.9 25.5 +/- 1.4 68º at 0.5 miles 29 N. Fence, N. of W. Side 22.3 +/- 1.6 24.9 +/- 2.4 16.8 +/- 1.0 25.2 +/- 1.5 65º at 0.5 miles 30 N. Fence, (NW) JAF 12.0 +/- 0.6 13.9 +/- 0.9 10.1 +/- 0.5 13.3 +/- 0.7 57º at 0.4 miles 31 N. Fence, (NW) NMP-1 7.8 +/- 0.4 8.6 +/- 0.4 8.1 +/- 0.4 7.7 +/- 0.5 279º at 0.2 miles 39 N. Fence, Rad. Waste-NMP-1 14.2 +/- 0.7 13.5 +/- 0.8 11.6 +/- 0.7 10.9 +/- 0.6 298º at 0.2 miles 47 N. Fence, (NE) JAF 7.4 +/- 0.3 8.5 +/- 0.6 7.1 +/- 0.3 7.7 +/- 0.3 69º at 0.6 miles 49* Phoenix, NY - Control 5.0 +/- 0.2 5.9 +/- 0.2 5.3 +/- 0.3 4.8 +/- 0.2 168º at 19.7 miles 51 Liberty & Bronson Sts., E. of OSS 5.2 +/- 0.2 6.1 +/- 0.2 5.4 +/- 0.3 4.9 +/- 0.2 234º at 7.3 miles 52 E. 12th & Cayuga Sts., Oswego School 5.1 +/- 0.2 5.9 +/- 0.2 5.3 +/- 0.2 4.7 +/- 0.2 227º at 5.9 miles 53 Broadwell & Chestnut Sts., Fulton H.S. 5.2 +/- 0.2 6.3 +/- 0.3 5.6 +/- 0.2 5.2 +/- 0.2 183º at 13.7 miles 54 Mexico High School 4.8 +/- 0.2 5.7 +/- 0.2 5.1 +/- 0.2 4.6 +/- 0.2 115º at 9.4 miles 55 Gas Substation Co. Rt. 5-Pulaski 4.9 +/- 0.3 6.0 +/- 0.3 5.3 +/- 0.3 4.8 +/- 0.2 75º at 13.0 miles 56* Rt. 104-New Haven Sch. (SE Corner) 4.9 +/- 0.2 5.8 +/- 0.2 5.4 +/- 0.3 4.8 +/- 0.2 124º at 5.2 miles 58* Co. Rt. 1A-Novelis (E. of E. Entrance Rd.) 5.3 +/- 0.2 6.3 +/- 0.3 5.7 +/- 0.2 5.0 +/- 0.3 222º at 3.0 miles 75* Unit 2, N. Fence, N. of Reactor Bldg. 8.6 +/- 0.4 9.5 +/- 0.4 8.2 +/- 0.5 8.9 +/- 0.5 354º at 0.1 miles 76* Unit 2, N. Fence, N. of Change House 6.6 +/- 0.3 7.6 +/- 0.2 6.9 +/- 0.3 6.7 +/- 0.4 25º at 0.1 miles (1) Direction and distances based on NMP-2 reactor centerline.

• TLD required by ODCM 6 - 19

TABLE 6-10 (continued)

DIRECT RADIATION MEASUREMENT RESULTS - 2020 Results in mrem/std. Month +/- 1 Sigma LOCATION JAN - MAR APR - JUN JUL - SEP OCT - DEC DEGREES & DISTANCE NO. DESCRIPTION (1) 77* Unit 2, N. Fence, N. of Pipe Bldg. 7.3 +/- 0.3 8.3 +/- 0.4 7.3 +/- 0.3 7.7 +/- 0.4 36º at 0.2 miles 78* JAF. E. of E. Old Lay Down Area 5.2 +/- 0.2 6.1 +/- 0.2 5.8 +/- 0.3 5.4 +/- 0.3 85º at 1.0 miles 79* Co. Rt. 29, Pole #63, 0.2 mi. S. of Lake Rd. 4.9 +/- 0.2 5.6 +/- 0.1 5.5 +/- 0.3 5.0 +/- 0.2 120º at 1.2 miles 80* Co. Rt. 29, Pole #54, 0.7 mi. S. of Lake Rd. 4.9 +/- 0.2 6.0 +/- 0.3 5.4 +/- 0.3 5.1 +/- 0.2 136º at 1.5 miles 81* Miner Rd., Pole # 16, 0.5 mi. W. of Rt. 29 4.8 +/- 0.2 5.8 +/- 0.2 5.3 +/- 0.2 5.0 +/- 0.2 159º at 1.6 miles 82* Miner Rd., Pole # 1-1/2, 1.1 mi. W. of Rt. 29 4.8 +/- 0.2 5.8 +/- 0.2 5.3 +/- 0.2 4.9 +/- 0.2 180º at 1.6 miles 83* Lakeview Rd., Tree 0.45 mi. N. of Miner Rd. 4.9 +/- 0.2 5.9 +/- 0.3 5.5 +/- 0.2 5.2 +/- 0.2 203º at 1.2 miles 84* Lakeview Rd., N., Pole #6117, 200ft. N. of Lake Rd. 5.0 +/- 0.2 6.0 +/- 0.2 5.4 +/- 0.2 5.1 +/- 0.3 226º at 1.1 miles 85* Unit 1, N. Fence, N. of W. Side of Screen House 10.3 +/- 0.7 10.9 +/- 0.3 9.3 +/- 0.6 9.3 +/- 0.6 292º at 0.2 miles 86* Unit 2, N. Fence, N. of W. Side of Screen House 8.7 +/- 0.4 10.2 +/- 0.5 8.8 +/- 0.5 9.1 +/- 0.5 311º at 0.1 miles 87* Unit 2, N. Fence, N. of E. Side of Screen House 9.0 +/- 0.5 10.3 +/- 0.4 8.9 +/- 0.4 9.4 +/- 0.5 333º at 0.1 miles 88* Hickory Grove Rd., Pole #2, 0.6 mi. N. of Rt. 1 4.9 +/- 0.2 5.8 +/- 0.2 5.3 +/- 0.3 4.9 +/- 0.3 97º at 4.5 miles 89* Leavitt Rd., Pole #16, 0.4 mi. S. of Rt. 1 5.0 +/- 0.2 6.0 +/- 0.2 5.6 +/- 0.2 5.1 +/- 0.2 112º at 4.3 miles 90* Rt. 104, Pole #300, 150 ft. E. of Keefe Rd. 4.9 +/- 0.2 5.9 +/- 0.2 5.4 +/- 0.2 5.1 +/- 0.2 135º at 4.2 miles 91* Rt. 51A, Pole #59, 0.8 mi. W. of Rt. 51 4.6 +/- 0.2 5.8 +/- 0.2 5.3 +/- 0.2 4.8 +/- 0.2 157º at 4.9 miles 92* Maiden Lane Rd., Power Pole, 0.6 mi. S. of Rt. 104 5.2 +/- 0.2 6.4 +/- 0.2 5.7 +/- 0.2 5.4 +/- 0.2 183º at 4.4 miles 93* Rt. 53 Pole 1-1, 120ft. S. of Rt. 104 4.9 +/- 0.2 6.0 +/- 0.2 5.2 +/- 0.2 4.9 +/- 0.2 206º at 4.4 miles 94* Rt. 1, Pole #82, 250ft. E. of Kocher Rd. (Co. Rt. 63) 4.7 +/- 0.2 5.8 +/- 0.2 5.1 +/- 0.2 4.7 +/- 0.2 224º at 4.4 miles 95* Novelis W. access Rd., Joe Fultz Blvd., Pole #21 4.6 +/- 0.2 5.7 +/- 0.6 4.7 +/- 0.2 4.5 +/- 0.2 239º at 3.7 miles 96* Creamery Rd., 0.3 mi. S. of Middle Rd., Pole 1-1/2 4.8 +/- 0.2 5.8 +/- 0.2 5.2 +/- 0.2 4.9 +/- 0.2 199º at 3.6 miles 97* Rt. 29, Pole #50, 200ft. N. of Miner Rd. 4.7 +/- 0.2 5.9 +/- 0.3 5.1 +/- 0.2 4.8 +/- 0.2 145º at 1.8 miles 98 Lake Rd., Pole #145, 0.15 mi. E. of Rt. 29 5.0 +/- 0.2 6.2 +/- 0.2 5.5 +/- 0.2 5.1 +/- 0.2 102º at 1.2 miles 99 NMP Rd., 0.4 mi. N. of Lake Rd., Env. Station R1 5.0 +/- 0.3 6.1 +/- 0.2 5.4 +/- 0.2 5.2 +/- 0.2 92º at 1.8 miles 100 Rt. 29 & Lake Rd. Env. Station R2 4.6 +/- 0.2 5.7 +/- 0.2 4.9 +/- 0.2 4.7 +/- 0.2 107º at 1.1 miles 101 Rt. 29, 0.7 mi. S. of Lake Rd. Env. Station R3 4.3 +/- 0.2 5.4 +/- 0.2 4.7 +/- 0.2 4.5 +/- 0.2 133º at 1.4 miles 102 EOF/Env. Lab, Rt. 176, E. Driveway, Lamp Post 4.7 +/- 0.2 6.0 +/- 0.3 5.1 +/- 0.2 4.8 +/- 0.2 175º at 11.9 miles 103 EIC, East Garage Rd., Lamp Post 5.3 +/- 0.2 6.7 +/- 0.3 5.6 +/- 0.3 5.6 +/- 0.3 268º at 0.4 miles 104 Parkhurst Rd., Pole #23, 0.1 mi. S. of Lake Rd. 4.9 +/- 0.2 5.9 +/- 0.2 5.4 +/- 0.3 5.0 +/- 0.2 102º at 1.4 miles 105 Lakeview Rd., Pole #36, 0.5 mi. S. of Lake Rd. 4.8 +/- 0.2 6.1 +/- 0.2 5.1 +/- 0.2 5.0 +/- 0.2 199º at 1.4 miles 106 Shoreline Cove, W. of NMP-1, Tree on W. Edge 5.5 +/- 0.3 7.1 +/- 0.3 6.2 +/- 0.2 6.1 +/- 0.3 274º at 0.3 miles 107 Shoreline Cove, W. of NMP-1, 30ft. SSW of #106 5.3 +/- 0.2 6.8 +/- 0.3 6.1 +/- 0.3 5.8 +/- 0.3 273º at 0.3 miles 108 Lake Rd., Pole #142, 300 ft. E. of Rt. 29 S. 5.1 +/- 0.2 6.2 +/- 0.2 5.5 +/- 0.2 5.1 +/- 0.2 105º at 1.1 miles 109 Tree North of Lake Rd., 300 ft. E. of Rt. 29 N. 5.1 +/- 0.2 6.2 +/- 0.2 5.5 +/- 0.2 5.1 +/- 0.2 104º at 1.1 miles 111 Control, State Route 38, Sterling, NY 4.6 +/- 0.2 5.7 +/- 0.2 5.0 +/- 0.2 4.5 +/- 0.2 214º at 21.8 miles 112 EOF/Env. Lab, Oswego County Airport 4.8 +/- 0.2 5.7 +/- 0.3 4.9 +/- 0.2 4.5 +/- 0.2 175º at 11.9 miles 113 Control, Baldwinsville, NY 4.7 +/- 0.3 5.8 +/- 0.2 4.9 +/- 0.2 4.7 +/- 0.2 178º at 24.7 miles (1) Direction and distances based on NMP-2 reactor centerline.

• TLD required by ODCM 6 - 20

TABLE 6-11 CONCENTRATIONS OF IODINE-131 AND GAMMA EMITTERS IN MILK SAMPLES - 2020 Results in Units of pCi/liter +/- 1 Sigma SAMPLE COLLECTION I-131 K-40 Cs-134 Cs-137 Ba-La-140 Others LOCATION*** DATE SAMPLE LOCATION** (55) 04/06/20 < 0.7 1150 +/- 94 < 8 < 8 < 5 < LLD 04/20/20 < 0.7 1349 +/- 88 < 8 < 8 < 8 < LLD 05/04/20 < 0.7 1205 +/- 82 < 8 < 8 < 8 < LLD 05/18/20 < 0.7 1147 +/- 89 < 8 < 10 < 7 < LLD 06/01/20 < 0.9 1275 +/- 81 < 8 < 7 < 6 < LLD 06/22/20 < 0.8 1215 +/- 94 < 9 < 9 < 8 < LLD 07/05/20 < 0.7 1204 +/- 86 < 9 < 9 < 10 < LLD 07/28/20 (1) 08/10/20 (1) 08/24/20 (1) 09/08/20 < 0.9 1064 +/- 84 < 8 < 9 < 11 < LLD 09/21/20 < 0.8 1320 +/- 99 < 9 < 9 < 11 < LLD 10/05/20 < 0.9 1363 +/- 100 < 9 < 9 < 9 < LLD 10/26/20 < 0.8 1152 +/- 94 < 7 < 8 < 6 < LLD 11/09/20 < 0.8 1567 +/- 87 < 9 < 8 < 7 < LLD 11/18/20 < 0.8 1257 +/- 94 < 9 < 8 < 8 < LLD 12/07/20 < 0.9 1361 +/- 89 < 11 < 9 < 11 < LLD 12/21/20 < 0.8 1450 +/- 85 < 7 < 7 < 5 < LLD SAMPLE LOCATION** (81) 07/29/20 < 0.6 1172 +/- 107 < 8 < 6 < 6 < LLD

• • Optional sample location

• • • Corresponds to sample location noted on Figure 3.3-4 Plant related radionuclides (1) Sample unable to be obtained.

6 - 21

TABLE 6-11 (continued)

CONCENTRATIONS OF IODINE-131 AND GAMMA EMITTERS IN MILK SAMPLES - 2020 Results in Units of pCi/liter +/- 1 Sigma SAMPLE COLLECTION I-131 K-40 Cs-134 Cs-137 Ba-La-140 Others LOCATION*** DATE SAMPLE LOCATION* (Control, 77) 04/06/20 < 0.5 1186 +/- 96 < 9 < 8 < 5 < LLD 04/20/20 < 0.5 1378 +/- 95 < 8 < 7 < 8 < LLD 05/04/20 < 0.8 1238 +/- 88 < 10 < 9 < 9 < LLD 05/18/20 < 0.7 1166 +/- 78 < 7 < 9 < 7 < LLD 06/01/20 < 0.8 1184 +/- 71 < 10 < 8 < 9 < LLD 06/22/20 < 0.7 1598 +/- 90 < 8 < 8 < 10 < LLD 07/05/20 < 0.7 1225 +/- 80 < 8 < 9 < 10 < LLD 07/28/20 < 0.6 1237 +/- 80 < 6 < 7 < 9 < LLD 08/10/20 < 0.8 1173 +/- 76 < 7 < 7 < 11 < LLD 08/24/20 < 0.7 1387 +/- 97 < 7 < 8 < 7 < LLD 09/08/20 < 0.9 1134 +/- 87 < 7 < 8 < 9 < LLD 09/21/20 < 0.8 1175 +/- 77 < 8 < 7 < 7 < LLD 10/05/20 < 0.6 1203 +/- 79 < 9 < 9 < 9 < LLD 10/26/20 < 0.6 1205 +/- 70 < 6 < 7 < 6 < LLD 11/09/20 < 0.8 1093 +/- 88 < 10 < 9 < 9 < LLD 11/18/20 < 0.8 1135 +/- 82 < 9 < 9 < 7 < LLD 12/07/20 < 0.9 1281 +/- 78 < 10 < 8 < 7 < LLD 12/21/20 < 0.9 1211 +/- 90 < 6 < 7 < 9 < LLD

• Sample required by the ODCM

• • • Corresponds to sample location noted on Figure 3.3-4 Plant related radionuclides 6 - 22

TABLE 6-12 CONCENTRATIONS OF GAMMA EMITTERS IN FOOD PRODUCT SAMPLES - 2020 Results in Units of pCi/kg (wet) +/- 1 Sigma SAMPLE COLLECTION Be-7 K-40 Zn-65 I-131 Cs-134 Cs-137 Others LOCATION*** DATE Narewski* (79) 06/26/20 Lettuce < 196 3702 +/- 217 < 51 < 26 < 20 < 23 < LLD 06/26/20 Swiss Chard < 199 4816 +/- 271 < 44 < 29 < 19 < 21 < LLD 06/26/20 Cabbage < 191 4364 +/- 234 < 59 < 26 < 19 < 24 < LLD FLACK* (Control, C2, 145) 07/09/20 Horseradish Leaves < 266 3824 +/- 261 < 56 < 30 < 24 < 21 < LLD 07/09/20 Rhubarb Leaves 325 +/- 112 3904 +/- 290 < 61 < 33 < 29 < 27 < LLD 07/09/20 Corn Leaves < 278 2641 +/- 294 < 52 < 32 < 25 < 23 < LLD WHALEY* (144) 06/30/20 Lettuce < 210 1722 +/- 222 < 70 < 28 < 22 < 25 < LLD 07/09/20 Cabbage < 283 3874 +/- 320 < 58 < 36 < 33 < 33 < LLD 07/09/20 Swiss Chard < 227 5913 +/- 288 < 49 < 33 < 27 < 28 < LLD O'CONNOR* (484) 06/26/20 Cabbage < 181 3598 +/- 263 < 49 < 23 < 26 < 20 < LLD 06/26/20 Swiss Chard < 191 4805 +/- 234 < 43 < 25 < 23 < 22 < LLD 06/26/20 Lettuce < 191 2847 +/- 222 < 46 < 28 < 18 < 19 < LLD

• Sample required by the ODCM

• • • Corresponds to sample location noted on Figure 3.3-5 Plant related radionuclides 6 - 23

TABLE 6-13 MILK ANIMAL CENSUS 2020 Number of Town or Location Distance(2) Milk Animals Area(a) Designation(1) Degrees(2) (Miles) (Cows)

Richland 7 89° 9.7 17 14 125° 9.1 55 Mexico 55* 97° 8.7 60 Granby 77** 190° 16.0 48 (Control)

MILKING ANIMAL TOTALS: 180 (including control locations)

MILKING ANIMAL TOTALS: 132 (excluding control locations)

NOTES:

• Milk sample location

• • Milk sample control location (1) Reference Figure 3.3-4 for locations 55 and 77 (2) Degrees and distance are based on NMP-2 Reactor Building centerline (a) Census performed out to a distance of approximately 10 miles 6 - 24

TABLE 6-14 JAF RESIDENCE CENSUS 2020 Meteorological Map Sector Location Location(1) Direction(2) Distance(2)

N * - - -

NNE * - - -

NE * - - -

ENE * - - -

E 80 Sunset Bay Road A 83° 1.04 miles ESE 161 Lake Road B 116° 0.7 miles SE 1216 County Route 29 C 143° 1.07 miles SSE 1146 County Route 29 D 152° 1.29 miles S 294 Miner Road E 179° 1.57 miles SSW 210 Lakeview Road F 213° 1.65 miles SW 319 Lakeview Road G 230° 1.45 miles WSW 85 Bayshore Drive H 242° 1.81 miles W * - - -

WNW * - - -

NW * - - -

NNW * - - -

NOTES:

• This meteorological sector is over Lake Ontario. There is no residence within five miles (1) Corresponds to Figure 3.3-6a (2) Direction and distance are based on JAFNPP Reactor Building centerline 6 - 25

TABLE 6-15 NMPNS RESIDENCE CENSUS 2020 Meteorological Map Sector Location Location(1) Direction(2) Distance(2)

N * - - -

NNE * - - -

NE * - - -

ENE * - - -

E 116 Lake Road A 100 1.29 miles

° ESE 161 Lake Road B 104° 1.11 miles SE 1216 County Route 29 C 125° 1.35 miles SSE 294 Miner Road D 162° 1.59 miles S 356 Miner Road E 171° 1.57 miles SSW 281 Lakeview Road F 208° 1.18 miles SW 319 Lakeview Road G 217° 1.11 miles WSW 85 Bayshore Drive H 237° 1.38 miles W * - - -

WNW * - - -

NW * - - -

NNW * - - -

NOTES:

• This meteorological sector is over Lake Ontario. There is no residence within five miles (1) Corresponds to Figure 3.3-6b (2) Direction and distance are based on NMP-Unit 2 Reactor Building centerline 6 - 26

7.0 HISTORICAL DATA TABLES Sample Statistics from Previous Environmental Sampling The mean, minimum value and maximum value were calculated for selected sample mediums and isotopes.

Special Considerations:

1. Sample data listed as 1969 was taken from the NINE MILE POINT, PREOPERATION SURVEY, 1969 and ENVIRONMENTAL MONITORING REPORT FOR NIAGARA MOHAWK POWER CORPORATION NINE MILE POINT NUCLEAR STATION, NOVEMBER, 1970.

2. Sample results listed as 1974 and 1975 were taken from the respective Annual Radiological Environmental Operating Reports for Nine Mile Point Unit 1 Nuclear Station. Sample results listed as 1986 through the current year were taken from the respective James A. FitzPatrick Nuclear Power Plant Annual Radiological Environmental Operating Reports.

3. Only measured values were used for statistical calculations.

4. The term MDL was used prior to 1979 to represent the concept of Lower Limit of Detection (LLD). MDL = Minimum Detectable Level.

7-1

TABLE 7-1 HISTORICAL ENVIRONMENTAL SAMPLE DATA SHORELINE SEDIMENT Results in pCi/g (dry)

LOCATION: CONTROL

• Isotope Cs-134 Cs-137 Co-60 Year Min. Max. Mean Min. Max. Mean Min. Max. Mean 1969 ** ** ** ** ** ** ** ** **

1974 ** ** ** ** ** ** ** ** **

1975 ** ** ** ** ** ** ** ** **

1993 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 1994 <LLD <LLD <LLD 0.027 0.027 0.027 <LLD <LLD <LLD 1995 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 1996 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 1997 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 1998 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 1999 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2000 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2001 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2002 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2003 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2004 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2005 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2006 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2007 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2016 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD

• Langs Beach - beyond influence of the site in a westerly direction.

• • No data. Sample not required until new technical specifications implemented in 1985.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-2

TABLE 7-2 HISTORICAL ENVIRONMENTAL SAMPLE DATA SHORELINE SEDIMENT Results in pCi/g (dry)

LOCATION: INDICATOR

• Isotope Cs-134 Cs-137 Co-60 Year Min. Max. Mean Min. Max. Mean Min. Max. Mean 1969 ** ** ** ** ** ** ** ** **

1974 ** ** ** ** ** ** ** ** **

1975 ** ** ** ** ** ** ** ** **

1993 <LLD <LLD <LLD 0.18 0.46 0.32 <LLD <LLD <LLD 1994 <LLD <LLD <LLD 0.06 0.37 0.22 <LLD <LLD <LLD 1995 <LLD <LLD <LLD 0.14 0.15 0.15 <LLD <LLD <LLD 1996 <LLD <LLD <LLD 0.15 0.17 0.16 <LLD <LLD <LLD 1997 <LLD <LLD <LLD 0.11 0.17 0.14 <LLD <LLD <LLD 1998 <LLD <LLD <LLD 0.06 0.06 0.06 <LLD <LLD <LLD 1999 <LLD <LLD <LLD 0.06 0.10 0.08 <LLD <LLD <LLD 2000 <LLD <LLD <LLD 0.06 0.07 0.06 <LLD <LLD <LLD 2001 <LLD <LLD <LLD 0.06 0.07 0.07 <LLD <LLD <LLD 2002 <LLD <LLD <LLD 0.05 0.05 0.05 <LLD <LLD <LLD 2003 <LLD <LLD <LLD 0.04 0.05 0.05 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 0.04 0.04 0.04 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 0.06 0.09 0.08 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 0.06 0.06 0.06 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 0.04 0.04 0.04 <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2016 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD <LLD

• Sunset Beach - closest offsite location with recreational value.

• • No data. Sample not required until new technical specifications implemented in 1985.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-3

TABLE 7-3 HISTORICAL ENVIRONMENTAL SAMPLE DATA FISH Results in pCi/g (wet)

LOCATION: CONTROL

• Isotope Cs-137 Year Min. Max. Mean 1969 No Data No Data No Data 1974 0.94 0.94 0.94 1975 <MDL <MDL <MDL 1993 0.030 0.036 0.033 1994 0.014 0.031 0.022 1995 0.017 0.023 0.019 1996 0.018 0.022 0.020 1997 0.012 0.030 0.021 1998 0.013 0.013 0.013 1999 <LLD <LLD <LLD 2000 0.021 0.021 0.021 2001 <LLD <LLD <LLD 2002 <LLD <LLD <LLD 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 <LLD <LLD <LLD 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Control location is at an area beyond the influence of the site (westerly direction).

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-4

TABLE 7-4 HISTORICAL ENVIRONMENTAL SAMPLE DATA FISH Results in pCi/g (wet)

LOCATION: INDICATOR * (NMP/JAF)

Isotope Cs-137 Year Min. Max. Mean 1969 0.01 0.13 0.06 1974 0.08 4.40 0.57 1975 1.10 1.70 1.38 1993 0.018 0.035 0.028 1994 0.015 0.023 0.019 1995 0.016 0.022 0.019 1996 0.016 0.025 0.020 1997 0.014 0.023 0.018 1998 0.021 0.021 0.021 1999 0.018 0.021 0.020 2000 <LLD <LLD <LLD 2001 <LLD <LLD <LLD 2002 0.016 0.016 0.016 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 <LLD <LLD <LLD 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Indicator locations are in the general area of the NMP-1 and J.A. FitzPatrick cooling water discharge structures.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-5

TABLE 7-5 HISTORICAL ENVIRONMENTAL SAMPLE DATA SURFACE WATER Results in pCi/liter LOCATION: CONTROL Isotope Cs-137 Co-60 Year Min. Max. Mean Min. Max. Mean 1969 * * * * *

• 1974 * * * * *

• 1975 * * * * *

• 1993 <LLD <LLD <LLD <LLD <LLD <LLD 1994 <LLD <LLD <LLD <LLD <LLD <LLD 1995 <LLD <LLD <LLD <LLD <LLD <LLD 1996 <LLD <LLD <LLD <LLD <LLD <LLD 1997 <LLD <LLD <LLD <LLD <LLD <LLD 1998 <LLD <LLD <LLD <LLD <LLD <LLD 1999 <LLD <LLD <LLD <LLD <LLD <LLD 2000 <LLD <LLD <LLD <LLD <LLD <LLD 2001 <LLD <LLD <LLD <LLD <LLD <LLD 2002 <LLD <LLD <LLD <LLD <LLD <LLD 2003 <LLD <LLD <LLD <LLD <LLD <LLD 2004 <LLD <LLD <LLD <LLD <LLD <LLD 2005 <LLD <LLD <LLD <LLD <LLD <LLD 2006 <LLD <LLD <LLD <LLD <LLD <LLD 2007 <LLD <LLD <LLD <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD 2016 <LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD

• No gamma analysis performed (not required).

Location was the City of Oswego Water Supply for 1969-1984 and the Oswego Steam Station inlet canal for 1985-Present.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-6

TABLE 7-6 HISTORICAL ENVIRONMENTAL SAMPLE DATA SURFACE WATER Results in pCi/liter LOCATION: INDICATOR Isotope Cs-137 Co-60 Year Min. Max. Mean Min. Max. Mean 1969 * * * * *

• 1974 * * * * *

• 1975 * * * * *

• 1993 <LLD <LLD <LLD <LLD <LLD <LLD 1994 <LLD <LLD <LLD <LLD <LLD <LLD 1995 <LLD <LLD <LLD <LLD <LLD <LLD 1996 <LLD <LLD <LLD <LLD <LLD <LLD 1997 <LLD <LLD <LLD <LLD <LLD <LLD 1998 <LLD <LLD <LLD <LLD <LLD <LLD 1999 <LLD <LLD <LLD <LLD <LLD <LLD 2000 <LLD <LLD <LLD <LLD <LLD <LLD 2001 <LLD <LLD <LLD <LLD <LLD <LLD 2002 <LLD <LLD <LLD <LLD <LLD <LLD 2003 <LLD <LLD <LLD <LLD <LLD <LLD 2004 <LLD <LLD <LLD <LLD <LLD <LLD 2005 <LLD <LLD <LLD <LLD <LLD <LLD 2006 <LLD <LLD <LLD <LLD <LLD <LLD 2007 <LLD <LLD <LLD <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD 2016 <LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD

• No gamma analysis performed (not required).

Indicator location was the NMP 1 Inlet Canal for the period 1969-1973, and the JAF Inlet Canal for 1974-Present.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-7

TABLE 7-7 HISTORICAL ENVIRONMENTAL SAMPLE DATA SURFACE WATER TRITIUM Results in pCi/liter LOCATION: CONTROL

• Isotope Tritium Year Min. Max. Mean 1969 No Data No Data No Data 1974 <MDL <MDL <MDL 1975 311 414 362 1993 160 230 188 1994 250 250 250 1995 230 230 230 1996 <LLD <LLD <LLD 1997 <LLD <LLD <LLD 1998 190 190 190 1999 220 510 365 2000 196 237 212 2001 <LLD <LLD <LLD 2002 <LLD <LLD <LLD 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 <LLD <LLD <LLD 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Control location is the City of Oswego, drinking water for 1969-1984 and the Oswego Steam Station inlet canal for 1985-Present.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-8

TABLE 7-8 HISTORICAL ENVIRONMENTAL SAMPLE DATA SURFACE WATER TRITIUM Results in pCi/liter LOCATION: INDICATOR

• Isotope Tritium Year Min. Max. Mean 1969 No Data No Data No Data 1974 380 500 440 1975 124 482 335 1993 200 280 242 1994 180 260 220 1995 320 320 320 1996 <LLD <LLD <LLD 1997 160 160 160 1998 190 190 190 1999 180 270 233 2000 161 198 185 2001 <LLD <LLD <LLD 2002 297 297 297 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 <LLD <LLD <LLD 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Indicator location was the NMP-1 Inlet Canal during the period 1969-1973, and the JAF Inlet Canal for 1974-Present.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7-9

TABLE 7-9 HISTORICAL ENVIRONMENTAL SAMPLE DATA AIR PARTICULATE GROSS BETA Results in pCi/m3 LOCATION: CONTROL

• Isotope Gross Beta Year Min. Max. Mean 1969 0.130 0.540 0.334 1974 0.001 0.808 0.121 1975 0.008 0.294 0.085 1993 0.007 0.022 0.013 1994 0.008 0.025 0.015 1995 0.006 0.023 0.014 1996 0.008 0.023 0.014 1997 0.006 0.025 0.013 1998 0.004 0.034 0.014 1999 0.010 0.032 0.017 2000 0.006 0.027 0.015 2001 0.006 0.034 0.016 2002 0.008 0.027 0.016 2003 0.004 0.032 0.015 2004 0.008 0.032 0.016 2005 0.008 0.034 0.019 2006 0.007 0.033 0.016 2007 0.008 0.028 0.016 2008 0.007 0.031 0.015 2009 0.007 0.030 0.016 2010 0.004 0.026 0.014 2011 0.008 0.034 0.018 2012 0.005 0.025 0.016 2013 0.006 0.031 0.016 2014 0.006 0.030 0.016 2015 0.008 0.038 0.016 2016 0.008 0.023 0.014 2017 0.005 0.028 0.015 2018 0.007 0.029 0.014 2019 0.008 0.024 0.015 2020 0.009 0.026 0.016

• Locations used for 1977-1984 were C offsite, D1 offsite, D2 offsite, E offsite, F offsite, and G offsite. Control location R5 offsite was used for 1986-Present (formerly C offsite location).

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 10

TABLE 7-10 HISTORICAL ENVIRONMENTAL SAMPLE DATA AIR PARTICULATE GROSS BETA Results in pCi/m3 LOCATION: INDICATOR

• Isotope Gross Beta Year Min. Max. Mean 1969 0.130 0.520 0.320 1974 0.003 0.885 0.058 1975 0.001 0.456 0.067 1993 0.005 0.023 0.014 1994 0.006 0.024 0.015 1995 0.004 0.031 0.014 1996 0.006 0.025 0.013 1997 0.001 0.018 0.010 1998 0.002 0.040 0.015 1999 0.009 0.039 0.017 2000 0.005 0.033 0.015 2001 0.004 0.037 0.016 2002 0.006 0.026 0.016 2003 0.005 0.035 0.015 2004 0.003 0.036 0.016 2005 0.007 0.041 0.019 2006 0.005 0.035 0.015 2007 0.007 0.028 0.016 2008 0.004 0.030 0.016 2009 0.006 0.032 0.016 2010 0.005 0.030 0.015 2011 0.007 0.034 0.018 2012 0.004 0.031 0.016 2013 0.007 0.032 0.016 2014 0.007 0.028 0.016 2015 0.007 0.041 0.016 2016 0.008 0.025 0.015 2017 0.004 0.025 0.014 2018 0.005 0.029 0.015 2019 0.008 0.026 0.014 2020 0.008 0.030 0.016

• Locations used for 1969-1973 were D1 onsite, D2 onsite, E onsite, F onsite and G onsite. Locations used for 1974-1984 were D1 onsite, D2 onsite, E onsite, F onsite, G onsite, H onsite, I onsite, J onsite and K onsite, as applicable. 1986 - Present: locations were R1 offsite, R2 offsite, R3 offsite, and R4 offsite.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 11

TABLE 7-11 HISTORICAL ENVIRONMENTAL SAMPLE DATA AIR PARTICULATES Results in pCi/m3 LOCATION: CONTROL **

Isotope Cs-137 Co-60 Year Min. Max. Mean Min. Max. Mean 1969 * * * * *

• 1974 * * * * *

• 1975 * * * * *

• 1993 <LLD <LLD <LLD <LLD <LLD <LLD 1994 <LLD <LLD <LLD <LLD <LLD <LLD 1995 <LLD <LLD <LLD <LLD <LLD <LLD 1996 <LLD <LLD <LLD <LLD <LLD <LLD 1997 <LLD <LLD <LLD <LLD <LLD <LLD 1998 <LLD <LLD <LLD <LLD <LLD <LLD 1999 <LLD <LLD <LLD <LLD <LLD <LLD 2000 <LLD <LLD <LLD <LLD <LLD <LLD 2001 <LLD <LLD <LLD <LLD <LLD <LLD 2002 <LLD <LLD <LLD <LLD <LLD <LLD 2003 <LLD <LLD <LLD <LLD <LLD <LLD 2004 <LLD <LLD <LLD <LLD <LLD <LLD 2005 <LLD <LLD <LLD <LLD <LLD <LLD 2006 <LLD <LLD <LLD <LLD <LLD <LLD 2007 <LLD <LLD <LLD <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD 2016 <LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD

• No data available (not required prior to 1977).

• • Locations included composites of offsite air monitoring locations for 1977-1984. Sample location included only R5 air monitoring location for 1985-Present.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 12

TABLE 7-12 HISTORICAL ENVIRONMENTAL SAMPLE DATA AIR PARTICULATES Results in pCi/m3 LOCATION: INDICATOR **

Isotope Cs-137 Co-60 Year Min. Max. Mean Min. Max. Mean 1969 * * * * *

• 1974 * * * * *

• 1975 * * * * *

• 1993 <LLD <LLD <LLD <LLD <LLD <LLD 1994 <LLD <LLD <LLD <LLD <LLD <LLD 1995 <LLD <LLD <LLD <LLD <LLD <LLD 1996 <LLD <LLD <LLD <LLD <LLD <LLD 1997 <LLD <LLD <LLD <LLD <LLD <LLD 1998 <LLD <LLD <LLD <LLD <LLD <LLD 1999 <LLD <LLD <LLD <LLD <LLD <LLD 2000 <LLD <LLD <LLD 0.0048 0.0048 0.0048 2001 <LLD <LLD <LLD <LLD <LLD <LLD 2002 <LLD <LLD <LLD <LLD <LLD <LLD 2003 <LLD <LLD <LLD <LLD <LLD <LLD 2004 <LLD <LLD <LLD <LLD <LLD <LLD 2005 <LLD <LLD <LLD <LLD <LLD <LLD 2006 <LLD <LLD <LLD <LLD <LLD <LLD 2007 <LLD <LLD <LLD <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD 2016 < LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD

• No data available (not required prior to 1977).

• • Locations included composites of onsite air monitoring locations for 1977-1984. Sample locations included R1 through R4 air monitoring locations for 1985-Present.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 13

TABLE 7-13 HISTORICAL ENVIRONMENTAL SAMPLE DATA AIR RADIOIODINE Results in pCi/m3 LOCATION: CONTROL

• Isotope Iodine-131 Year Min. Max. Mean 1969 ** ** **

1974 ** ** **

1975 <MDL <MDL <MDL 1993 <LLD <LLD <LLD 1994 <LLD <LLD <LLD 1995 <LLD <LLD <LLD 1996 <LLD <LLD <LLD 1997 <LLD <LLD <LLD 1998 <LLD <LLD <LLD 1999 <LLD <LLD <LLD 2000 <LLD <LLD <LLD 2001 <LLD <LLD <LLD 2002 <LLD <LLD <LLD 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 0.034 0.093 0.055 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Locations D1 offsite, D2 offsite, E offsite, F offsite and G offsite used for 1976-1984. Location R5 offsite used for 1985-Present.

• • No results - I-131 analysis not required.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

Iodine concentrations attributed to fallout from Fukushima accident.

7 - 14

TABLE 7-14 HISTORICAL ENVIRONMENTAL SAMPLE DATA AIR RADIOIODINE Results in pCi/m3 LOCATION: INDICATOR

• Isotope Iodine-131 Year Min. Max. Mean 1969 ** ** **

1974 ** ** **

1975 0.25 0.30 0.28 1993 <LLD <LLD <LLD 1994 <LLD <LLD <LLD 1995 <LLD <LLD <LLD 1996 <LLD <LLD <LLD 1997 <LLD <LLD <LLD 1998 <LLD <LLD <LLD 1999 <LLD <LLD <LLD 2000 <LLD <LLD <LLD 2001 <LLD <LLD <LLD 2002 <LLD <LLD <LLD 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 0.021 0.11 0.055 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Locations used for 1985 - Present, were R1 offsite, R2 offsite, R3 offsite, and R4 offsite.

• • No results. I-131 analysis not required.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

Iodine concentrations attributed to fallout from Fukushima accident.

7 - 15

TABLE 7-15 HISTORICAL ENVIRONMENTAL SAMPLE DATA ENVIRONMENTAL TLD Results in mrem/standard month LOCATION: CONTROL * (2)

Year Min. Max. Mean Preop (Note 1) (Note 1) (Note 1) 1974 2.7 8.9 5.6 1975 4.8 6.0 5.5 1993 (3.4) 3.4 (5.6) 5.2 (4.4) 4.3 1994 (3.1) 3.1 (5.0) 4.6 (4.1) 3.9 1995 (3.4) 3.4 (5.7) 4.9 (4.4) 4.2 1996 (3.4) 3.4 (5.6) 5.6 (4.3) 4.2 1997 (3.7) 3.9 (6.2) 5.2 (4.7) 4.6 1998 (3.7) 3.7 (5.6) 4.8 (4.4) 4.2 1999 (3.6) 3.7 (7.1) 4.7 (4.6) 4.4 2000 (3.7) 3.7 (7.3) 5.5 (4.7) 4.3 2001 (3.6) 3.9 (5.4) 5.0 (4.4) 4.4 2002 (3.4) 3.4 (5.5) 5.2 (4.3) 4.1 2003 (3.4) 3.4 (5.5) 4.8 (4.2) 4.2 2004 (3.3) 3.3 (5.9) 5.9 (4.3) 4.5 2005 (3.3) 3.4 (5.1) 4.5 (4.1) 4.0 2006 (3.3) 3.3 (5.3) 5.3 (4.1) 4.3 2007 (3.2) 3.2 (5.8) 5.8 (4.4) 4.6 2008 (3.3) 3.3 (5.1) 5.1 (4.1) 4.3 2009 (3.2) 3.2 (4.8) 4.8 (3.9) 4.0 2010 (2.8) 2.8 (4.6) 4.6 (3.9) 3.9 2011 (2.6) 2.6 (5.5) 5.5 (4.0) 4.1 2012 (3.6) 3.6 (5.0) 5.0 (4.0) 4.2 2013 (3.2) 3.2 (4.9) 4.9 (3.9) 4.0 2014(3) 3.3 5.0 4.1 2015 3.0 5.4 4.1 2016 3.6 5.2 4.2 2017 3.7 4.9 4.3 2018 3.7 4.9 4.2 2019 3.3 5.6 4.8 2020 4.8 6.2 5.5

• TLD #8 and 14 established 1974, TLD #49 established 1980, TLD #111 established 1988, TLD #113 established 1991.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for JAFNPP.

(1) Data not available.

(2) Data in parentheses is control data determined using TLDs #8, 14, 49, 111 and 113.

(3) Starting in 2014, only data from locations 8, 14, and 49 are reported.

7 - 16

TABLE 7-16 HISTORICAL ENVIRONMENTAL SAMPLE DATA ENVIRONMENTAL TLD Results in mrem per standard month LOCATION: SITE BOUNDARY **

Year Min. Max. Mean Preop * *

• 1974 * *

• 1975 * *

• 1993 3.8 4.8 4.3 1994 2.8 4.9 4.0 1995 3.5 5.1 4.4 1996 3.2 5.3 4.1 1997 3.5 5.9 4.6 1998 3.7 5.1 4.4 1999 3.3 7.5 4.7 2000 3.6 6.8 4.5 2001 3.6 5.3 4.5 2002 3.5 5.1 4.3 2003 3.2 4.9 4.3 2004 3.3 6.4 4.4 2005 3.4 4.8 4.2 2006 3.5 4.7 4.1 2007 3.2 5.4 4.3 2008 3.2 4.8 4.0 2009 3.1 4.5 3.9 2010 3.3 4.3 3.9 2011 3.1 5.3 4.1 2012 3.6 4.8 4.1 2013 3.5 4.7 3.9 2014 3.3 4.6 3.9 2015 2.9 5.1 4.0 2016 3.5 4.8 4.0 2017 3.6 4.7 4.0 2018 3.5 4.7 4.0 2019 3.0 5.6 4.6 2020 4.5 6.3 5.3

• Data not available (not required prior to 1985).

TLD #23, 75, 76, 77, 85, 86 and 87 are in close proximity to operational buildings along the north boundary. This boundary is the lakeshore and is considered to be generally not accessible to the public. These locations are not used in the site boundary dose determination.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

• • TLDs used for statistics: 7, 18, 78, 79, 80, 81, 82, 83 & 84.

7 - 17

TABLE 7-17 HISTORICAL ENVIRONMENTAL SAMPLE DATA ENVIRONMENTAL TLD Results in mrem per standard month LOCATION: OFFSITE SECTORS **

Year Min. Max. Mean Preop * *

• 1974 * *

• 1975 * *

• 1993 3.4 6.3 4.5 1994 3.0 5.1 4.0 1995 3.2 5.2 4.3 1996 3.2 5.3 4.2 1997 3.5 5.8 4.4 1998 3.5 5.0 4.2 1999 3.6 5.6 4.4 2000 3.4 6.6 4.5 2001 3.6 5.4 4.4 2002 3.1 5.3 4.2 2003 3.4 4.8 4.1 2004 3.2 6.7 4.4 2005 3.2 4.7 4.0 2006 3.3 4.4 4.0 2007 3.1 5.1 4.2 2008 3.2 4.5 3.8 2009 3.3 4.5 3.9 2010 3.0 4.4 3.9 2011 3.0 5.3 4.0 2012 3.5 4.6 4.0 2013 3.2 4.5 3.8 2014 3.2 4.4 3.8 2015 2.9 4.8 3.9 2016 3.3 4.6 3.9 2017 3.4 4.8 4.0 2018 3.1 4.7 3.9 2019 3.2 5.6 4.5 2020 4.5 6.4 5.2

• Data not available (not required prior to 1985).

• • Includes TLD numbers 88, 89, 90, 91, 92, 93, 94 and 95.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 18

TABLE 7-18 HISTORICAL ENVIRONMENTAL SAMPLE DATA ENVIRONMENTAL TLD Results in mrem per standard month LOCATION: SPECIAL INTEREST **

Year Min. Max. Mean Preop * *

• 1974 * *

• 1975 * *

• 1993 3.2 5.8 4.5 1994 2.9 4.8 4.1 1995 3.6 4.8 4.2 1996 3.2 5.1 4.2 1997 3.5 6.2 4.6 1998 3.7 5.6 4.4 1999 3.6 7.1 4.6 2000 3.6 7.3 4.7 2001 3.8 5.4 4.4 2002 3.5 5.5 4.2 2003 3.4 5.5 4.3 2004 3.0 5.9 4.2 2005 3.4 5.1 4.1 2006 3.5 5.3 4.1 2007 3.0 5.8 4.3 2008 3.1 5.1 4.0 2009 3.1 4.5 3.8 2010 3.2 4.7 3.9 2011 2.9 4.9 4.0 2012 3.4 4.7 4.0 2013 3.2 4.5 3.8 2014 2.9 4.3 3.8 2015 2.5 4.6 3.9 2016 3.5 4.4 3.9 2017 3.5 4.5 3.9 2018 3.5 4.7 3.9 2019 3.0 5.6 4.6 2020 4.7 6.3 5.3

• Data not available (not required prior to 1985).

• • Includes TLD numbers 15, 56, 58, 96, 97 and 98.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 19

TABLE 7-19 HISTORICAL ENVIRONMENTAL SAMPLE DATA ENVIRONMENTAL TLD Results in mrem per standard month LOCATION: ONSITE INDICATOR **

Year Min. Max. Mean Preop * *

• 1974 3.1 10.6 5.7 1975 4.6 16.0 7.3 1993 3.1 13.6 5.2 1994 2.8 14.3 5.1 1995 3.5 28.6 6.2 1996 3.1 32.6 6.4 1997 3.5 28.8 8.1 1998 3.6 28.8 6.2 1999 3.3 28.4 6.6 2000 3.7 16.5 5.6 2001 3.8 14.5 5.6 2002 3.5 13.6 5.3 2003 3.2 12.9 5.3 2004 3.3 13.2 5.4 2005 3.4 14.1 5.4 2006 3.5 14.4 5.3 2007 3.2 14.8 5.6 2008 3.2 13.8 5.2 2009 3.1 13.6 4.9 2010 3.3 13.3 4.8 2011 3.1 13.0 5.1 2012 3.5 11.8 4.9 2013 3.3 12.2 5.0 2014 3.3 12.9 4.9 2015 2.8 13.2 5.1 2016 3.5 11.3 4.8 2017 3.6 12.7 5.0 2018 3.5 12.6 5.0 2019 3.0 13.2 5.4 2020 4.5 14.7 6.1

• No data available.

• • Includes TLD numbers 3, 4, 5, 6 and 7 (1970 - 1973). Includes TLD numbers 3, 4, 5, 6, 7, 23, 24, 25 and 26 (1974 - Present).

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 20

TABLE 7-20 HISTORICAL ENVIRONMENTAL SAMPLE DATA ENVIRONMENTAL TLD Results in mrem per standard month LOCATION: OFFSITE INDICATOR **

Year Min. Max. Mean Preop * *

• 1974 2.4 8.9 5.3 1975 4.5 7.1 5.5 1993 3.2 5.7 5.0 1994 3.0 5.1 4.1 1995 3.9 5.7 4.4 1996 3.3 5.5 4.1 1997 3.7 6.2 4.7 1998 3.9 5.6 4.5 1999 3.8 7.1 4.6 2000 3.8 7.3 4.6 2001 3.7 5.9 4.6 2002 3.6 5.5 4.4 2003 3.1 5.5 4.4 2004 3.2 6.5 4.5 2005 3.6 5.1 4.2 2006 3.9 5.3 4.2 2007 3.4 4.9 4.3 2008 3.3 4.5 4.0 2009 3.3 4.1 3.8 2010 3.5 4.0 3.7 2011 3.2 4.8 4.0 2012 3.6 4.3 4.0 2013 3.5 4.3 3.9 2014 3.3 4.2 3.8 2015 3.0 4.5 3.9 2016 3.7 4.5 4.0 2017 3.5 4.3 4.0 2018 3.6 4.2 3.9 2019 3.3 5.0 4.4 2020 4.5 5.8 5.1

• No data available.

• • Includes TLD numbers 9, 10, 11, 12 and 13.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

7 - 21

TABLE 7-21 HISTORICAL ENVIRONMENTAL SAMPLE DATA MILK Results in pCi/liter LOCATION: CONTROL **

Isotope Cs-137 I-131 Year Min. Max. Mean Min. Max. Mean 1969 * * * * *

• 1974 * * * * *

• 1975 * * * * *

• 1993 <LLD <LLD <LLD <LLD <LLD <LLD 1994 <LLD <LLD <LLD <LLD <LLD <LLD 1995 <LLD <LLD <LLD <LLD <LLD <LLD 1996 <LLD <LLD <LLD <LLD <LLD <LLD 1997 <LLD <LLD <LLD <LLD <LLD <LLD 1998 <LLD <LLD <LLD <LLD <LLD <LLD 1999 <LLD <LLD <LLD <LLD <LLD <LLD 2000 <LLD <LLD <LLD <LLD <LLD <LLD 2001 <LLD <LLD <LLD <LLD <LLD <LLD 2002 <LLD <LLD <LLD <LLD <LLD <LLD 2003 <LLD <LLD <LLD <LLD <LLD <LLD 2004 <LLD <LLD <LLD <LLD <LLD <LLD 2005 <LLD <LLD <LLD <LLD <LLD <LLD 2006 <LLD <LLD <LLD <LLD <LLD <LLD 2007 <LLD <LLD <LLD <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD 2016 <LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD

• No data available (sample not required).

• • Location used was an available milk sample location in a least prevalent wind direction greater than ten miles from the site.

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

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TABLE 7-22 HISTORICAL ENVIRONMENTAL SAMPLE DATA MILK Results in pCi/liter LOCATION: INDICATOR Isotope Cs-137 I-131 Year Min. Max. Mean Min. Max. Mean 1969 * * * * *

• 1974 1.6 39 10.5 0.70 2.00 1.23 1975 6.0 22 16 0.01 2.99 0.37 1993 <LLD <LLD <LLD <LLD <LLD <LLD 1994 <LLD <LLD <LLD <LLD <LLD <LLD 1995 <LLD <LLD <LLD <LLD <LLD <LLD 1996 <LLD <LLD <LLD <LLD <LLD <LLD 1997 <LLD <LLD <LLD 0.25 0.44 0.35 1998 <LLD <LLD <LLD <LLD <LLD <LLD 1999 <LLD <LLD <LLD <LLD <LLD <LLD 2000 <LLD <LLD <LLD <LLD <LLD <LLD 2001 <LLD <LLD <LLD <LLD <LLD <LLD 2002 <LLD <LLD <LLD <LLD <LLD <LLD 2003 <LLD <LLD <LLD <LLD <LLD <LLD 2004 <LLD <LLD <LLD <LLD <LLD <LLD 2005 <LLD <LLD <LLD <LLD <LLD <LLD 2006 <LLD <LLD <LLD <LLD <LLD <LLD 2007 <LLD <LLD <LLD <LLD <LLD <LLD 2008 <LLD <LLD <LLD <LLD <LLD <LLD 2009 <LLD <LLD <LLD <LLD <LLD <LLD 2010 <LLD <LLD <LLD <LLD <LLD <LLD 2011 <LLD <LLD <LLD <LLD <LLD <LLD 2012 <LLD <LLD <LLD <LLD <LLD <LLD 2013 <LLD <LLD <LLD <LLD <LLD <LLD 2014 <LLD <LLD <LLD <LLD <LLD <LLD 2015 <LLD <LLD <LLD <LLD <LLD <LLD 2016 <LLD <LLD <LLD <LLD <LLD <LLD 2017 <LLD <LLD <LLD <LLD <LLD <LLD 2018 <LLD <LLD <LLD <LLD <LLD <LLD 2019 <LLD <LLD <LLD <LLD <LLD <LLD 2020 <LLD <LLD <LLD <LLD <LLD <LLD

• No data available (sample not required).

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

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TABLE 7-23 HISTORICAL ENVIRONMENTAL SAMPLE DATA FOOD PRODUCTS Results in pCi/g (wet)

LOCATION: CONTROL

• Isotope Cs-137 Year Min. Max. Mean 1969 ** ** **

1974 ** ** **

1975 ** ** **

1993 0.008 0.008 0.008 1994 <LLD <LLD <LLD 1995 <LLD <LLD <LLD 1996 <LLD <LLD <LLD 1997 <LLD <LLD <LLD 1998 <LLD <LLD <LLD 1999 <LLD <LLD <LLD 2000 <LLD <LLD <LLD 2001 <LLD <LLD <LLD 2002 <LLD <LLD <LLD 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 <LLD <LLD <LLD 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Locations was an available food product sample location in a least prevalent wind direction greater than ten miles from the site.

• • No data available (control samples not required).

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

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TABLE 7-24 HISTORICAL ENVIRONMENTAL SAMPLE DATA FOOD PRODUCTS Results in pCi/g (wet)

LOCATION: INDICATOR

• Isotope Cs-137 Year Min. Max. Mean 1969 ** ** **

1974 0.04 0.34 0.142 1975 <MDL <MDL <MDL 1993 <LLD <LLD <LLD 1994 0.006 0.012 0.010 1995 0.011 0.012 0.012 1996 <LLD <LLD <LLD 1997 0.013 0.013 0.013 1998 <LLD <LLD <LLD 1999 0.007 0.007 0.007 2000 <LLD <LLD <LLD 2001 <LLD <LLD <LLD 2002 <LLD <LLD <LLD 2003 <LLD <LLD <LLD 2004 <LLD <LLD <LLD 2005 <LLD <LLD <LLD 2006 <LLD <LLD <LLD 2007 <LLD <LLD <LLD 2008 <LLD <LLD <LLD 2009 <LLD <LLD <LLD 2010 <LLD <LLD <LLD 2011 <LLD <LLD <LLD 2012 <LLD <LLD <LLD 2013 <LLD <LLD <LLD 2014 <LLD <LLD <LLD 2015 <LLD <LLD <LLD 2016 <LLD <LLD <LLD 2017 <LLD <LLD <LLD 2018 <LLD <LLD <LLD 2019 <LLD <LLD <LLD 2020 <LLD <LLD <LLD

• Indicator locations were available downwind locations within ten miles of the site and with high deposition potential.

• • No data available (control samples not required).

1969 data is considered to be pre-operational for the site. 1974 and 1975 data is considered to be pre-operational for the JAFNPP.

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TABLE 7-25 HISTORICAL ENVIRONMENTAL SAMPLE DATA NMPNS GROUNDWATER WELLS TRITIUM Results in pCi/liter LOCATION: CONTROL (a)

Isotope TRITIUM Year Min. Max. Mean 2005 <854 <854 <854 2006(b) <447 <825 <636 2007 <442 <445 <444 2008 <427 <439 <431 2009 <411 <418 <415 2010 <172 <410 <341 2011 <408 <424 <415 2012 <363 <499 <420 2013 <365 <381 <374 2014 <404 <493 <433 2015(c) <108 215 <151 2016 <161 <199 <181 2017 <183 234 <193 2018 <178 <234 <205 2019 <178 <199 <189 2020 <176 <179 <178 (a) Control well locations (2) are upland wells located south of the protected area.

(b) Required LLD change to 500 pCi/l from 1000 pCi/l.

(c) Required LLD changed to 200 pCi/l.

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TABLE 7-26 HISTORICAL ENVIRONMENTAL SAMPLE DATA NMPNS GROUNDWATER WELLS TRITIUM Results in pCi/liter LOCATION: INDICATOR (a)

Isotope TRITIUM Year Min. Max. Mean 2005 <854 <871 <863 2006(b) <462 <933 <823 2007 <440 <461 <445 2008 <427 <439 <433 2009 <406 <424 <413 2010 <287 611 <384 2011 <407 <428 <414 2012 <314 <499 <395 2013 <365 820(c) <382 2014 <365 <493 <436 2015(d) <106 947 <196 2016 <108 749 <211 2017 <183 435 <201 2018 <176 470 <203 2019 <154 366 <197 2020 <172 252 <185 (a) Indicator locations are down gradient wells located in the owner control area.

(b) Required LLD change to 500 pCi/l from 1000 pCi/l.

(c) Re-sample tritium concentration = <459 pCi/l.

(d) Required LLD changed to 200 pCi/l.

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TABLE 7-27 HISTORICAL ENVIRONMENTAL SAMPLE DATA JAFNPP GROUNDWATER WELLS TRITIUM Results in pCi/liter LOCATION: CONTROL Isotope TRITIUM Year Min. Max. Mean 2007 <909 <909 <909 2008 <852 <923 <889 2009 <836 <848 <842 2010 <398 <850 <717 2011 <395 <594 <436 2012 <363 1036 <530 2013 <342 <710 <529 2014 <383 <791 <532 2015 <723 <934 <793 2016 <864 <902 <888 2017 <775 <930 <833 2018 <182 219 <193 2019 <178 <199 <192 2020 <180 <182 <181 7 - 28

TABLE 7-28 HISTORICAL ENVIRONMENTAL SAMPLE DATA JAFNPP GROUNDWATER WELLS TRITIUM Results in pCi/liter LOCATION: INDICATOR (a)

Isotope TRITIUM Year Min. Max. Mean 2010 <410 1049 <794 2011 <390 <689 <421 2012 <356 <787 <417 2013 <338 <720 <395 2014 <383 <791 <490 2015 <723 1149 <796 2016 <864 <902 <886 2017 <775 <930 <834 2018 <184 654 250 2019 <172 482 230 2020 <175 402 208 (a) Indicator locations are down gradient wells located in the owner control area.

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8.0 QUALITY ASSURANCE / QUALITY CONTROL PROGRAM 8.1 PROGRAM DESCRIPTION The Offsite Dose Calculation Manual (ODCM), Part 1, Section 5.3 requires that the licensee participate in an Interlaboratory Comparison Program. The Interlaboratory Comparison Program shall include sample media for which samples are routinely collected and for which comparison samples are commercially available. Participation in an Interlaboratory Comparison Program ensures that independent checks on the precision and accuracy of the measurement of radioactive material in the environmental samples are performed as part of the Quality Assurance Program for environmental monitoring. To fulfill the requirement for an Interlaboratory Comparison Program, the Teledyne Brown Engineering (TBE) Environmental Services laboratory has engaged the services of Eckert &

Ziegler Analytics, Incorporated in Atlanta, Georgia, The Department of Energys (DOE) Mixed Analyte Performance Evaluation Program (MAPEP) located in Idaho Falls, Idaho, and Environmental Resource Associates (ERA) in Golden, Co.

The Interlaboratory Comparison providers supply sample media as blind sample spikes, which contain certified levels of radioactivity unknown to the analysis laboratory. These samples are prepared and analyzed by the Teledyne Brown Engineering Environmental Services laboratory using standard laboratory procedures.

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8.2 PROGRAM SCHEDULE SAMPLE PROVIDER SAMPLE LABORATORY ECKERT & ZIEGLER MEDIA ANALYSIS ANALYTICS Milk I-131 2 Milk Mixed Gamma 2 Air I-131 2 Air Mixed Gamma 2 Soil Mixed Gamma 2 SAMPLE LABORATORY SAMPLE PROVIDER MEDIA ANALYSIS DOE MAPEP Air Gr-Beta 2 Vegetation Mixed Gamma 2 SAMPLE LABORATORY SAMPLE PROVIDER MEDIA ANALYSIS ERA Water I-131 2 Water Mixed Gamma 2 Water H-3 2 TOTAL SAMPLE INVENTORY 20 8.3 ACCEPTANCE CRITERIA Each sample result is evaluated to determine the accuracy and precision of the laboratorys analysis result. The sample evaluation method is discussed below.

8.3.1 SAMPLE RESULTS EVALUATION Analytics:

Analytics evaluation report provides a ratio of TBEs result and Analytics known value.

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Since flag values are not assigned by Analytics, TBE evaluates the reported ratios based on internal QC requirements, which are based on the DOE/MAPEP criteria. The ratio of 0.80 to 1.20 is evaluated as acceptable. The ratios of 0.70 to 0.80 and 1.20 to 1.30 are evaluated as acceptable with warning.

DOE Evaluation Criteria (Handbook for the Department of Energys Mixed Analyte Performance Evaluation Program (MAPEP), Revision 13 (June 2012), pp 37-38, retrieved from http://www.id.energy.gov/resl/mapep/handbookv13.pdf )

MAPEP:

MAPEPs evaluation report provides an acceptance range with associated flag values.

The MAPEP defines three levels of performance:

• Acceptable (flag = A) - result within +/- 20% of the reference value.

• Acceptable with Warning (flag = W) - result falls in the +/- 20% to +/- 30% of the reference value.

• Not Acceptable (flag = N) - bias is greater than 30% of the reference value.

Note: The Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP) samples are created to mimic Conditions found at DOE sites which do not resemble typical environmental samples obtained at commercial nuclear power facilities.

False positive/negative testing and sensitivity evaluations are used in radiological performance evaluations. The specific analytes used for testing vary among performance evaluation test sessions.

The MAPEP program uses false positive testing to identify laboratory results that indicate the presence of a particular radionuclide in a MAPEP sample when, in fact, the actual activity of the radionuclide is far below the detection limit of the measurement. Not acceptable (N) performance, and hence a false positive result, is indicated when the range encompassing the result, plus or minus the total uncertainty at three standard deviations, does not include zero (e.g. 2.5 +/- 0.2; range of 1.9 - 3.1). Statistically, the probability that a result can exceed the absolute value of its total uncertainty at three standard deviations by chance alone is less than 1%. The MAPEP uses a three standard deviation criterion for the false positive test to ensure confidence about issuing a false positive performance evaluation. A result that is greater than three times the total uncertainty of the measurement represents a statistically positive detection with over 99% confidence.

Sensitivity evaluations are routinely performed to complement the false positive tests. In a sensitivity evaluation the radionuclide is present at or near the detection limit, and the difference between the report result and the MAPEP reference value is compared to the propagated combined total uncertainties. The results are evaluated at three standard deviations. If the observed difference is greater than three time the combined total uncertainty, the sensitivity evaluation in Not Acceptable. The probability that such a difference can occur by chance alone is less than 1%. If the participant did not report a statistically positive result, a Not Detected is noted in the text field of the MAPEP performance report. A non-detect is potentially a false negative result, dependent upon the laboratorys detection limit for the radionuclide.

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False negative tests are also performed in combination with the sensitivity evaluations. In this scenario, the sensitivity of the reported measurement indicates that the known specific activity of the targeted radionuclide in the performance evaluation sample should have been detected, but was not, and a Not Acceptable performance evaluation is issued.

The uncertainty of the MAPEP reference value and of the reported result at three standard deviations is used for the false negative test.

The false positive/negative and sensitivity evaluation tests are conducted in a manner that assists the participants with their measurement uncertainty estimates and helps ensure they are not under estimating or over inflating their total uncertainties. If the total uncertainty is over inflated to try to pass a false positive test, it will result in a Not Detected if the test is actually a sensitivity evaluation, and vice versa for a false positive test. False negatives and failed sensitivity evaluations can also result from under estimating the total uncertainty.

An accurate estimate of measurement uncertainty is required for consistent performance at the acceptable level.

ERA:

The ERAs evaluation report provides an acceptance range for control and warning limits with associated flag values. The ERAs acceptance limits are established per the USEPA, National Environmental Laboratory Accreditation Conference (NELAC), state specific Performance Testing (PT) program requirements or ERAs SOP for the Generation of Performance Acceptance Limits, as applicable. The acceptance limits are either determined by a regression equation specific to each analyte or a fixed percentage limit promulgated under the appropriate regulatory document.

8.4 PROGRAM RESULTS

SUMMARY

The Interlaboratory Comparison Program numerical results for the TBE Environmental Services laboratory are provided on Table 8-1 thru Table 8-3.

8.4.1 ECKERT & ZIEGLER ANALYTICS, DOE MAPEP, and ERA QA SAMPLES RESULTS For the TBE laboratory, 126 out of 133 analyses performed met the specified acceptance criteria. Ten analyses did not meet the specified acceptance criteria for the following reasons and were addressed through the TBE Corrective Action Program.

1. The MAPEP February 2020 AP U-233/234 and U-238 results were evaluated as Not Acceptable. The reported value for U-233/234 was 0.0416 +/- 0.0102 Bq/sample and the known result was 0.075 Bq/sample (acceptance range 0.053 - 0.098). The reported value for U-238 was 0.0388 +/- 0.00991 Bq/sample and the known result was 0.078 Bq/sample (acceptance range 0.055 - 0.101). This sample was run as the workgroup duplicate and had RPDs of 10.4% (U-234) and 11.7% (U-238). After the known results were obtained, the sample was relogged. The filter was completely digested with tracer added originally; the R1 results were almost identical. It was concluded that the recorded tracer amount was actually 8-4

double, causing the results to be skewed. Lab worksheets have been modified to verify actual tracer amount vs. LIMS data. TBE changed vendors for this cross-check to ERA MRAD during the 2nd half of 2020. Results were acceptable at 97.8% for U-234 and 106% for U-238. (NCR 20-13)

2. The Analytics September 2020 milk Sr-89 result was evaluated as Not Acceptable. The reported value was 62.8 pCi/L and the known result was 95.4 (66%). All QC data was reviewed and there were no anomalies. This was the first failure for milk Sr-89 since 2013 and there have only been 3 upper/lower boundary warnings since that time. It is believed that there may have been some loss during the sample prep (ashing). The December 2020 result was at 92% of the known. (NCR 20-19)

3. The ERA October 2020 water I-131 result was evaluated as Not Acceptable. The reported value was 22.9 pCi/L and the known result was 28.2 (acceptance range 23.5 - 33.1). The reported result was 81% of the known, which passes TBE QC criteria. This was the first failure for water I-131. (NCR 20-17)

4. The ERA October 2020 water Gross Alpha and Gross Beta results were evaluated as Not Acceptable. The reported/acceptable values and ranges are as follows:

Reported Known Range Gross Alpha 40.0 26.2 13.3 - 34.7 Gross Beta 47.5 69.1 48.0 - 76.0 All QC data was reviewed with no anomalies and a cause for failure could not be determined.

This was the first failure for water Gross Beta. A Quick Response follow-up cross-check was analyzed as soon as possible with acceptable results at 96.8% for Gross Alpha and 102% for Gross Beta. (NCR 20-18)

5. The MAPEP August 2020 soil Ni-63 result was evaluated as Not Acceptable. The reported value was 438 +/- 21.1 Bq/kg and the known result was 980 Bq/kg (acceptance range 686 -

1274). It is believed that some Ni-63 loss may have occurred during the sample prep. This investigation is still on-going at this time. (NCR 20-20)

The Inter-Laboratory Comparison Program provides evidence of in control counting systems and methods, and that the laboratories are producing accurate and reliable data.

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Table 8-1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units TBE Value Evaluation (b)

Number Value (a) Known Result September 2020 E13247 Milk Sr-89 pCi/L 62.8 95.4 0.66 N(1)

Sr-90 pCi/L 12.0 12.8 0.94 A E13248 Milk Ce-141 pCi/L 156 150 1.04 A Co-58 pCi/L 172 180 0.96 A Co-60 pCi/L 369 379 0.97 A Cr-51 pCi/L 372 372 1.00 A Cs-134 pCi/L 171 200 0.85 A Cs-137 pCi/L 241 250 0.96 A Fe-59 pCi/L 217 200 1.08 A I-131 pCi/L 84.6 95.0 0.89 A Mn-54 pCi/L 175 180 0.97 A Zn-65 pCi/L 252 270 0.93 A E13249 Charcoal I-131 pCi 70.2 75.8 0.93 A E13250 AP Ce-141 pCi 101 101 1.00 A Co-58 pCi 111 120 0.92 A Co-60 pCi 249 254 0.98 A Cr-51 pCi 287 249 1.15 A Cs-134 pCi 114 134 0.85 A Cs-137 pCi 159 168 0.95 A Fe-59 pCi 127 134 0.95 A Mn-54 pCi 114 121 0.94 A Zn-65 pCi 168 181 0.93 A E13251 Soil Ce-141 pCi/g 0.241 0.191 1.26 W Co-58 pCi/g 0.211 0.228 0.93 A Co-60 pCi/g 0.466 0.481 0.97 A Cr-51 pCi/g 0.450 0.472 0.95 A Cs-134 pCi/g 0.273 0.254 1.07 A Cs-137 pCi/g 0.370 0.390 0.95 A Fe-59 pCi/g 0.233 0.254 0.92 A Mn-54 pCi/g 0.217 0.229 0.95 A Zn-65 pCi/g 0.368 0.343 1.07 A E13252 AP Sr-89 pCi 79.9 100.0 0.80 A Sr-90 pCi 12.1 13.4 0.90 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 (1) See NCR 20-19 (Page 1 of 4) 8-6

Table 8-1 Analytics Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification Known Ratio of TBE to Month/Year Matrix Nuclide Units TBE Value Evaluation (b)

Number Value (a) Known Result December 2020 E13254 Milk Sr-89 pCi/L 82.2 89.7 0.92 A Sr-90 pCi/L 12.4 13.0 0.96 A E13255 Milk Ce-141 pCi/L 91.1 100 0.91 A Co-58 pCi/L 77.5 84.3 0.92 A Co-60 pCi/L 147 152 0.97 A Cr-51 pCi/L 259 253 1.02 A Cs-134 pCi/L 97.1 108 0.90 A Cs-137 pCi/L 117 127 0.92 A Fe-59 pCi/L 114 112 1.02 A I-131 pCi/L 84.3 91.9 0.92 A Mn-54 pCi/L 137 143 0.96 A Zn-65 pCi/L 175 190 0.92 A E13256 Charcoal I-131 pCi 70.2 78.2 0.90 A E13257A AP Ce-141 pCi 67.4 74.6 0.90 A Co-58 pCi 57.9 62.9 0.92 A Co-60 pCi 108 113 0.95 A Cr-51 pCi 162 189 0.86 A Cs-134 pCi 68.1 80.4 0.85 A Cs-137 pCi 82.4 95.0 0.87 A Fe-59 pCi 80.5 83.7 0.96 A Mn-54 pCi 102 107 0.95 A Zn-65 pCi 115 142 0.81 A E13258 Soil Ce-141 pCi/g 0.167 0.170 0.98 A Co-58 pCi/g 0.125 0.143 0.87 A Co-60 pCi/g 0.245 0.257 0.95 A Cr-51 pCi/g 0.393 0.429 0.92 A Cs-134 pCi/g 0.147 0.183 0.80 A Cs-137 pCi/g 0.260 0.288 0.90 A Fe-59 pCi/g 0.199 0.190 1.05 A Mn-54 pCi/g 0.229 0.243 0.94 A Zn-65 pCi/g 0.320 0.322 0.99 A E13259 AP Sr-89 pCi 85.0 78.6 1.08 A Sr-90 pCi 13.1 11.4 1.15 A (a) The Analytics known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) Analytics evaluation based on TBE internal QC limits:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 (Page 2 of 4) 8-7

Table 8-2 DOE's Mixed Analyte Performance Evaluation Program (MAPEP)

Teledyne Brown Engineering Environmental Services Identification TBE Known Acceptance Month/Year Matrix Nuclide Units Evaluation (b)

Number Value Value (a) Range February 2020 20-GrF42 AP Gross Alpha Bq/sample 0.676 1.24 0.37 - 2.11 A Gross Beta Bq/sample 2.03 2.00 1.00 - 3.00 A 20-MaS42 Soil Ni-63 Bq/kg 0.01 (1) A Sr-90 Bq/kg 348 340 238 - 442 A 20-MaW42 Water Ni-63 Bq/L 11.6 11.1 7.8 - 14.4 A Pu-238 Bq/L 0.926 0.94 0.66 - 1.22 A Pu-239/240 Bq/L 0.712 0.737 0.516 - 0.958 A 20-RdF42 AP U-234/233 Bq/sample 0.0416 0.075 0.053 - 0.098 N(3)

U-238 Bq/sample 0.0388 0.078 0.055 - 0.101 N(3) 20-RdV42 Vegetation Cs-134 Bq/sample 3.23 3.82 2.67 - 4.97 A Cs-137 Bq/sample 2.64 2.77 1.94 - 3.60 A Co-57 Bq/sample 0.0281 (1) A Co-60 Bq/sample 2.62 2.79 1.95 - 3.63 A Mn-54 Bq/sample 4.3 4.58 3.21 - 5.95 A Sr-90 Bq/sample 0.396 0.492 0.344 - 0.640 A Zn-65 Bq/sample 3.93 3.79 2.65 - 4.93 A August 2020 20-GrF43 AP Gross Alpha Bq/sample 0.267 0.528 0.158 - 0.989 A Gross Beta Bq/sample 0.939 0.915 0.458 - 1.373 A 20-MaS43 Soil Ni-63 Bq/kg 438 980 686 - 1274 N(4)

Tc-99 Bq/kg 1.11 (1) A 20-MaW43 Water Ni-63 Bq/L 0.175 (1) A Tc-99 Bq/L 8.8 9.4 6.6 - 12.2 A 20-RdV43 Vegetation Cs-134 Bq/sample 3.635 4.94 3.46 - 6.42 W Cs-137 Bq/sample 0.0341 (1) A Co-57 Bq/sample 5.855 6.67 4.67 - 8.67 W Co-60 Bq/sample 3.122 4.13 2.89 - 5.37 W Mn-54 Bq/sample 4.524 5.84 4.09 - 7.59 A Sr-90 Bq/sample 1.01 1.39 0.97 - 1.81 W Zn-65 Bq/sample 4.706 6.38 4.47 - 8.29 W (a) The MAPEP known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation (b) DOE/MAPEP evaluation:

A = Acceptable - reported result falls within ratio limits of 0.80-1.20 W = Acceptable with warning - reported result falls within 0.70-0.80 or 1.20-1.30 N = Not Acceptable - reported result falls outside the ratio limits of < 0.70 and > 1.30 (1) False positive test (2) Sensitivity evaluation (3) See NCR 20-13 (4) See NCR 20-20 (Page 3 of 4) 8-8

Table 8-3 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification Known Acceptance Month/Year Matrix Nuclide Units TBE Value Evaluation (b)

Number Value (a) Limits March 2020 MRAD-32 Water Am-241 pCi/L 52.5 45.3 31.1 - 57.9 A Fe-55 pCi/L 155 152 89.3 - 221 A Pu-238 pCi/L 34.0 36.4 21.9 - 47.2 A Pu-239 pCi/L 30.9 33.6 20.8 - 41.4 A April 2020 RAD-121 Water Ba-133 pCi/L 41.8 41.8 34.0- 46.7 A Cs-134 pCi/L 42.9 46.3 37.1 - 50.9 A Cs-137 pCi/L 226 234 211 - 259 A Co-60 pCi/L 52.4 50.3 45.3 - 57.9 A Zn-65 pCi/L 83.3 86.8 78.1 - 104 A GR-A pCi/L 20.1 23.6 11.9 - 31.6 A GR-B pCi/L 45.6 60.5 41.7 - 67.2 A U-Nat pCi/L 18.45 18.6 14.9 - 20.9 A H-3 pCi/L 14200 14100 12300 - 15500 A Sr-89 pCi/L 58.0 60.1 48.3 - 67.9 A Sr-90 pCi/L 34.1 44.7 33.0 - 51.2 A I-131 pCi/L 27.4 28.9 24.1 - 33.8 A September 2020 MRAD-33 Soil Sr-90 pCi/Kg 4360 4980 1550 - 7760 A AP Fe-55 pCi/Filter 189 407 149 - 649 A U-234 pCi/Filter 17.9 18.3 13.6 - 21.4 A U-238 pCi/Filter 19.1 18.1 13.7 - 21.6 A Water Am-241 pCi/L 160 176 121 - 225 A Fe-55 pCi/L 299 298 175 - 433 A Pu-238 pCi/L 200 191 115 - 247 A Pu-239 pCi/L 105 100 61.9 - 123 A October 2020 RAD-123 Water Ba-133 pCi/L 37.1 37.0 29.8 - 41.6 A Cs-134 pCi/L 50.6 52.7 42.5 - 58.0 A Cs-137 pCi/L 131 131 118 - 146 A Co-60 pCi/L 62.9 60.5 54.4 - 69.1 A Zn-65 pCi/L 167 162 146 - 191 A GR-A pCi/L 40.0 26.2 13.3 - 34.7 N(1)

GR-B pCi/L 47.5 69.1 48.0 - 76.0 N(1)

U-Nat pCi/L 17.2 20.3 16.3 - 22.7 A H-3 pCi/L 23800 23200 20,300 - 25,500 A Sr-89 pCi/L 41.1 43.3 33.4 - 50.5 A Sr-90 pCi/L 28.5 30.2 22.0 - 35.0 A I-131 pCi/L 22.9 28.2 23.5 - 33.1 N(2)

November 2020 QR111920K Water GR-A pCi/L 50.7 52.4 27.3 - 65.6 A GR-B pCi/L 24.9 24.3 15.0 - 32.3 A (a) The ERA known value is equal to 100% of the parameter present in the standard as determined by gravimetric and/or volumetric measurements made during standard preparation.

(b) ERA evaluation:

A = Acceptable - Reported value falls within the Acceptance Limits N = Not Acceptable - Reported value falls outside of the Acceptance Limits (1) See NCR 20-18 (2) See NCR 20-17 (Page 4 of 4) 8-9

ENVIRONMENTAL DOSIMETRY COMPANY ANNUAL QUALITY ASSURANCE STATUS REPORT January - December 2020 Prepared By: Date:

L I Approved By: Date :

Environmental Dosimetry Company 10 Ashton Lane Sterling, MA 01564 9-1

TABLE OF CONTENTS Page LIST OF TABLES ....................................................................................................................... iii EXECUTIVE

SUMMARY

............................................................................................................ iv I. INTRODUCTION ............................................................................................................ 1 A. QC Program........................................................................................................ 1 B. QA Program ........................................................................................................ 1 II. PERFORMANCE EVALUATION CRITERIA ................................................................... 1 A. Acceptance Criteria for Internal Evaluations........................................................ 1 B. QC Investigation Criteria and Result Reporting ................................................... 3 C. Reporting of Environmental Dosimetry Results to EDC Customers ..................... 3 III. DATA

SUMMARY

FOR ISSUANCE PERIOD JANUARY-DECEMBER 2020 ................. 3 A. General Discussion ............................................................................................. 3 B. Result Trending .................................................................................................. 4 IV. STATUS OF EDC CONDITION REPORTS (CR) ........................................................... 4 V. STATUS OF AUDITS/ASSESSMENTS .......................................................................... 4 A. Internal................................................................................................................ 4 B. External .............................................................................................................. 4 VI. PROCEDURES AND MANUALS REVISED DURING JANUARY - DECEMBER 2020 ... 4 VII. CONCLUSION AND RECOMMENDATIONS ................................................................. 4 VIII. REFERENCES ............................................................................................................... 4 APPENDIX A DOSIMETRY QUALITY CONTROL TRENDING GRAPHS

-ii- 9-2

LIST OF TABLES Page

1. Percentage of Individual Analyses Which Passed EDC Internal Criteria, January - December 2020 5

2. Mean Dosimeter Analyses (n=6), January - December 2020 5

3. Summary of Independent QC Results for 2020 5

-iii- 9-3

EXECUTIVE

SUMMARY

Routine quality control (QC) testing was performed for dosimeters issued by the Environmental Dosimetry Company (EDC) .

During this annual period100% (72/72) of the individual dosimeters, evaluated against the EDC internal performance acceptance criteria (high-energy photons only), met the criterion for accuracy and 100% (72/72) met the criterion for precision (Table 1). In addition, 100% (12/12) of the dosimeter sets evaluated against the internal tolerance limits met EDC acceptance criteria (Table 2) and 100% (6/6) of independent testing passed the performance criteria (Table 3). Trending graphs, which evaluate performance statistic for high-energy photon irradiations and co-located stations are given in Appendix A.

One internal assessment and one external audit were performed in 2020.There was one deficiency issued in the external audit.

-iv- 9-4

I. INTRODUCTION The TLD systems at the Environmental Dosimetry Company (EDC) are calibrated and operated to ensure consistent and accurate evaluation of TLDs. The quality of the dosimetric results reported to EDC clients is ensured by in-house performance testing and independent performance testing by EDC clients, and both internal and client directed program assessments.

The purpose of the dosimetry quality assurance program is to provide performance documentation of the routine processing of EDC dosimeters. Performance testing provides a statistical measure of the bias and precision of dosimetry processing against a reliable standard, which in turn points out any trends or performance changes. Two programs are used:

A. QC Program Dosimetry quality control tests are performed on EDC Panasonic 814 Environmental dosimeters. These tests include: (1) the in-house testing program coordinated by the EDC QA Officer and (2) independent test perform by EDC clients. In-house test are performed using six pairs of 814 dosimeters, a pair is reported as an individual result and six pairs are reported as the mean result.Results of these tests are described in this report.

Excluded from this report are instrumentation checks. Although instrumentation checks represent an important aspect of the quality assurance program, they are not included as process checks in this report. Instrumentation checks represent between 5-10% of the TLDs processed.

B. QA Program An internal assessment of dosimetry activities is conducted annually by the Quality Assurance Officer (Reference 1). The purpose of the assessment is to review procedures, results, materials or components to identify opportunities to improve or enhance processes and/or services.

II. PERFORMANCE EVALUATION CRITERIA A. Acceptance Criteria for Internal Evaluations

1. Bias For each dosimeter tested, the measure of bias is the percent deviation of the reported result relative to the delivered exposure. The percent deviation relative to the delivered exposure is calculated as follows:

Hi Hi 100 Hi where:

Hi = the corresponding reported exposure for the ith dosimeter (i.e., the reported exposure)

Hi = the exposure delivered to the ith irradiated dosimeter (i.e., the delivered exposure) 1 of 6 9-5

2. Mean Bias For each group of test dosimeters, the mean bias is the average percent deviation of the reported result relative to the delivered exposure. The mean percent deviation relative to the delivered exposure is calculated as follows:

Hi Hi 1 100 Hi n where:

Hi = the corresponding reported exposure for the ith dosimeter (i.e., the reported exposure)

Hi = the exposure delivered to the ith irradiated test dosimeter (i.e., the delivered exposure) n = the number of dosimeters in the test group

3. Precision For a group of test dosimeters irradiated to a given exposure, the measure of precision is the percent deviation of individual results relative to the mean reported exposure. At least two values are required for the determination of precision. The measure of precision for the ith dosimeter is:

Hi H 100 H

where:

Hi = the reported exposure for the ith dosimeter (i.e., the reported exposure) 1 H = the mean reported exposure; i.e., H Hi n

n = the number of dosimeters in the test group

4. EDC Internal Tolerance Limits All evaluation criteria are taken from the EDC Quality System Manual, (Reference 2). These criteria are only applied to individual test dosimeters irradiated with high-energy photons (Cs-137) and are as follows for Panasonic Environmental dosimeters: +/- 15% for bias and +/-

12.8% for precision.

2 of 6 9-6

B. QC Investigation Criteria and Result Reporting EDC Quality System Manual (Reference 2) specifies when an investigation is required due to a QC analysis that has failed the EDC bias criteria. The criteria are as follows:

1. No investigation is necessary when an individual QC result falls outside the QC performance criteria for accuracy.

2. Investigations are initiated when the mean of a QC processing batch is outside the performance criterion for bias.

C. Reporting of Environmental Dosimetry Results to EDC Customers

1. All results are to be reported in a timely fashion.

2. If the QA Officer determines that an investigation is required for a process, the results shall be issued as normal. If the QC results prompting the investigation have a mean bias from the known of greater than +/-20%, the results shall be issued with a note indicating that they may be updated in the future, pending resolution of a QA issue.

3. Environmental dosimetry results do not require updating if the investigation has shown that the mean bias between the original results and the corrected results, based on applicable correction factors from the investigation, does not exceed +/-20%.

III. DATA

SUMMARY

FOR ISSUANCE PERIOD JANUARY-DECEMBER 2020 A. General Discussion Results of performance tests conducted are summarized and discussed in the following sections. Summaries of the performance tests for the reporting period are given in Tables 1 through 3 and Figures 1 through 4.

Table 1 provides a summary of individual dosimeter results evaluated against the EDC internal acceptance criteria for high-energy photons only. During this period100% (72/72) of the individual dosimeters, evaluated against these criteria, met the tolerance limits for accuracy and 100% (72/72) met the criterion for precision. A graphical interpretation is provided in Figures 1 and 2.

Table 2 provides the bias and standard deviation results for each group (N=6) of dosimeters evaluated against the internal tolerance criteria. Overall,100% (12/12) of the dosimeter sets, evaluated against the internal tolerance performance criteria, met these criteria. A graphical interpretation is provided in Figure 3.

Table 3 presents the independent blind spike results for dosimeters processed during this annual period. All results passed the performance acceptance criterion. Figure 4 is a graphical interpretation of Seabrook Station blind co-located station results.

3 of 6 9-7

B. Result Trending One of the main benefits of performing quality control tests on a routine basis is to identify trends or performance changes. The results of the Panasonic environmental dosimeter performance tests are presented in Appendix A. The results are evaluated against each of the performance criteria listed in Section II, namely: individual dosimeter accuracy, individual dosimeter precision, and mean bias.

All of the results presented in Appendix A are plotted sequentially by processing date.

IV. STATUS OF EDC CONDITION REPORTS (CR)

During this annual period, one EDC Condition Report was issued. CR 1-2020 was issued to document the deficiency from the DTE Energy Audit 20-003.

V. STATUS OF AUDITS/ASSESSMENTS

1. Internal EDC Internal Quality Assurance Assessment was conducted during the fourth quarter 2020. There were no findings identified.

2. External DTE Energy Audit 20-003 was conducted on July 28-30, 2020. There was one deficiency identified.

VI. PROCEDURES AND MANUALS REVISED DURING JANUARY - DECEMBER 2020 Manual 1 was revised on September 28, 2020.

Several procedures were reissued with no changes as part of the 5 year review cycle.

VII. CONCLUSION AND RECOMMENDATIONS The quality control evaluations continue to indicate the dosimetry processing programs at the EDC satisfy the criteria specified in the Quality System Manual. The EDC demonstrated the ability to meet all applicable acceptance criteria.

VIII. REFERENCES

1. EDC Quality Control and Audit Assessment Schedule, 2020.

2. EDC Manual 1, Quality System Manual, Rev. 4, September 28, 2020.

4 of 6 9-8

TABLE 1 PERCENTAGE OF INDIVIDUAL DOSIMETERS THAT PASSED EDC INTERNAL CRITERIA JANUARY - DECEMBER 2020(1), (2)

Number  % Passed Precision Dosimeter Type  % Passed Bias Criteria Tested Criteria Panasonic Environmental 72 100 100 (1)

This table summarizes results of tests conducted by EDC.

(2)

Environmental dosimeter results are free in air.

TABLE 2 MEAN DOSIMETER ANALYSES (N=6)

JANUARY - DECEMBER 2020(1), (2)

Standard Tolerance Process Date Exposure Level Mean Bias % Deviation Limit +/-

% 15%

4/28/2020 37 1.8 1.2 Pass 5/02/2020 94 2.9 1.4 Pass 5/20/2020 56 -0.5 1.4 Pass 7/28/2020 72 4.1 0.6 Pass 8/07/2020 111 4.0 1.3 Pass 9/24/2020 25 -4.6 1.2 Pass 10/24/2020 35 5.2 1.6 Pass 10/28/2020 60 1.6 0.7 Pass 11/18/2020 91 0.5 1.6 Pass 01/21/2021 31 3.8 1.7 Pass 02/09/2021 83 0.3 0.8 Pass 02/16/2021 46 5.3 1,5 Pass (1)

This table summarizes results of tests conducted by EDC for TLDs issued in 2020.

(2)

Environmental dosimeter results are free in air.

TABLE 3

SUMMARY

OF INDEPENDENT DOSIMETER TESTING JANUARY - DECEMBER 2020(1), (2)

Standard Pass / Fail Issuance Period Client Mean Bias %

Deviation %

1st Qtr. 2020 Millstone -3.8 3.0 Pass 2nd Qtr.2020 Seabrook 0.5 1.4 Pass 2nd Qtr.2020 Millstone -3.0 1.6 Pass 3rd Qtr. 2020 Millstone 0.4 2.6 Pass 4th Qtr.2020 PSEG(PNNL) -3.2 0.9 Pass 4th Qtr.2020 Seabrook 6.9 1.9 Pass 4th Qtr.2020 SONGS -8.4 1.3 Pass 4th Qtr.2020 Millstone 3.0 1.9 Pass (1)

Performance criteria are +/- 15%.

(2)

Blind spike irradiations using Cs-137 5 of 6 9-9

APPENDIX A DOSIMETRY QUALITY CONTROL TRENDING GRAPHS ISSUE PERIOD JANAURY - DECEMBER 2020 6 of 6 9 - 10

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