ML21167A188

2020 Annual Radiological Environmental Operating Report

ML21167A188
Person / Time
Site:	Indian Point
Issue date:	05/06/2021
From:	Entergy Nuclear Northeast
To:	Office of Nuclear Material Safety and Safeguards
References
NL-21-030
Download: ML21167A188 (130)

Text

ENCLOSURE TO NL-21-030 2020 Annual Radiological Environmental Operating Report ENTERGY NUCLEAR OPERATIONS, INC.

INDIAN POINT UNIT 1, 2, and 3 NUCLEAR POWER PLANTS DOCKET Nos. 50-03, 50-247, and 50-286

Page 1 of 128 Plant: Indian Point Energy Center YEAR: 2020 Docket Number: 50-003 (IP1 ), 50-247 (IP2), 50-286 (IP3)

Annual Radiological Environmental Operating Report

Plant: Indian Point Energy Center I Year: 2020 I Page 2 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE OF CONTENTS Page 1.0 EXECUTIVE

SUMMARY

7 1.1 Introduction 8 1.2 Sampling and Analysis 8 1.3 Land Use Census 8 1.4 Summary of Results 9 1.5 Conclusions 9

2.0 INTRODUCTION

10 2.1 Overview 11 2.2 Site Description 12 2.3 Program Background 12 2.4 Program Objectives 12 3.0 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS 14 3.1 Sample Collection 15 3.2 Sample Analysis 15 3.3 Sample Collection and Analysis Methodology 15 3.3.1 Direct Radiation 15 3.3.2 Airborne Particulates and Radioiodine 16 3.3.3 Drinking Water 16 3.3.4 Ground Water 16 3.3.5 Soil 16 3.3.6 Broad Leaf Vegetation 16 3.3.7 Hudson River Water 16 3.3.8 Hudson River Bottom Sediment 17 3.3.9 Hudson River Shoreline Soil 17 3.3.10 Hudson River Aquatic Vegetation 17 3.3.11 Fish and Invertebrates 17 3.3.12 Land Use Census 17 3.4 Statistical Methodology 18 3.4.1 Lower Limit of Detection and MDC 18 3.4.2 Table Statistics 19

Plant: Indian Point Energy Center I Year: 2020 I Page 3 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE OF CONTENTS {continued}

Page 4.0 INTERPRETATION AND TRENDS OF RESULTS 29 4.1 Direct Radiation 32 4.2 Airborne Particulates and Radioiodine 32 4.3 Drinking Water 33 4.4 Ground Water 33 4.5 Soil 33 4.6 Broad Leaf Vegetation 33 4.7 Hudson River Water 33 4.8 Hudson River Bottom Sediment 34 4.9 Hudson River Shoreline Soil 34 4.10 Hudson River Aquatic Vegetation 34 4.11 Fish and Invertebrates 34 4.12 Land Use Census 34 4.13 Conclusion 35 5.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 36

SUMMARY

5.1 2020 Annual Radiological Monitoring Program Summary 37 5.2 Land Use Census 37 5.3 Sampling Deviations 37 5.4 Analytical Deviations 37 5.5 Special Reports 37 6.0. HISTORICAL TRENDS 97 7.0 INTERLABORATORY COMPARISON PROGRAM 116 7.1 Program Description - Teledyne Brown Engineering 117 Environmental Services Comparison Programs 7.2 Acceptance Criteria 117 7.2.1 Analytics Sample Results Evaluation 117 7.2.2 ERA and MAPEP Sample Result Evaluation 118 7.3 Program Results Summary 118 7.4 Environmental TLD Quality Assurance 123

8.0 REFERENCES

125

Plant: Indian Point Energy Center Year: 2020 Page 4 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT LIST OF FIGURES FIGURE TITLE Page A-1 Sampling Locations (Within Two Miles) 23 A-2 Sampling Locations (Greater Than Two Miles) 24 A-3 Additional Sampling Locations 25 C-1 Direct Radiation, Annual Summary, 2009 to 2020 100 C-2 Radionuclides in Air - Gross Beta, 2009 to 2020 102 C-3 Radionuclides in Hudson River Water, Inlet & Discharge 104 2009 to 2020 C-4 Radionuclides in Drinking Water, 106 2009 to 2020 C-5 Radionuclides in Shoreline Soil, 2009 to 2020 108 C-6 Radionuclides in Broad Leaf Vegetation, 2009 to 2020 110 C-7 Radionuclides in Fish & Invertebrates, 2009 to 2020 112 C-9 Radionuclides in Bottom Sediment, 2009 to 2020 115

Plant: Indian Point Energy Center I Year: 2020 I Page 5 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT LIST OF TABLES TABLE TITLE Page A-1 Indian Point REMP Sampling Station Locations 20 A-2 Lower Limit of Detection (LLD) Requirements for 26

• Environmental Samples A-3 Reporting Levels for Radioactivity Concentrations in 28 Environmental Samples B-1 Summary of Sampling Deviations - 2020 38 B-1a 2020 Air Sampling Deviations 39 B-1b 2020 Other Media Deviations 39 B-1c 2020 Changes to the REMP Program 40 B-2 Radiological Environmental Monitoring Program Summary 41 Indian Point Energy Center - 2020 B-3 Direct Radiation, Quarterly Data - 2020 47 B-4 Direct Radiation, 2010 through 2020 Data 48 B-5 Direct Radiation, Inner and Outer Rings - 2020 49 B-6 Gross Beta Activity in Airborne Particulate Samples - 2020 50 B-7 lodine-131 Activity in Airborne Charcoal Samples - 2020 52 B-8 Gamma Emitters in Airborne Particulate Samples - 2020 54 B-9 Radionuclides in Drinking Water Samples - 2020 59 B-10 Radionuclides in Groundwater Samples - 2020 63 B-11 Gamma Emitters in Soil Samples - 2020 64 B-12 Gamma Emitters in Broad Leaf Vegetation Samples - 2020 65 B-13 Radionuclides in River Water Samples - 2020 74 B-14 Gamma Emitters in Bottom Sediment Samples - 2020 80 B-15 Radionuclides in Shoreline Soil Samples - 2020 82 B-16 Gamma Emitters in Aquatic Vegetation Samples - 2020 85 B-17 Radionuclides in Fish/ Invertebrates - 2020 88 B-18 Land Use Census, Residence & Milch Animal Results 2020 95 B-19 Land Use Census - 2020 - Unrestricted Area Boundary 96 and Nearest Residences

Plant: Indian Point Energy Center Year: 2020 Page 6 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT LIST OF TABLES (Continued)

TABLE TITLE Page C-1 Direct Radiation Annual Summary, 2009 - 2020 99 C-2 Radionuclides in Air, 2009 - 2020 101 C-3 Radionuclides in Hudson River Water, Inlet & Discharge 103 2009 to 2020 C-4 Radionuclides in Drinking Water, 2009 to 2020 105 C-5 Radionuclides in Shoreline Soil, 2009 to 2020 107 C-6 Radionuclides in Broad Leaf Vegetation, 2009 to 2020 109 C-7 Radionuclides in Fish & Invertebrates, 2009 to 2020 111 C-8 River Water Discharge Area Tritium, REMP vs Effluent 113 C-9 Radionuclides in Bottom Sediment, 2009 to 2020 114 D-2.1 Ratio of Agreement 118 D-3.1 Analytics lnterlaboratory Comparison Program 119 and Ratio of Agreement D-3.2 DOE lnterlaboratory Comparison Program 121 and Ratio of Agreement D-3.3 ERA lnterlaboratory Comparison Program 122 and Ratio of Agreement D-4.1 Percentage of Individual Dosimeters That Passed EDC 123 Internal Criteria, 2020 D-4.2 Mean Dosimeter Analysis (N=6), 2020 124 D-4.3 Summary of Independent Dosimeter Testing, 2020 124

Plant: Indian Point Energy Center Year: 2020 Page 7 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT SECTION 1.0 EXECUTIVE

SUMMARY

Plant: Indian Point Energy Center I Year: 2020 I Page 8 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 1.0 EXECUTIVE

1.1 INTRODUCTION

This report summarizes the results of the Radiological Environmental Monitoring Program (REMP) conducted in the vicinity of Indian Point Energy Center (IPEC) during the period from January 1 to December 31, 2020. The Indian Point site consists of Units 1, 2 and 3, which are operated by Entergy Nuclear Operations Inc. Unit 1 was retired as a generating facility in 1974, and its reactor is no longer operated. Unit 2 was permanently shutdown on April 30 th 2020.

The REMP has been established to monitor/measure the radiation and radioactivity detectable in the environment that may be attributable to the operation of IPEC. This program, initiated in 1958, includes the collection, analysis, and evaluation of radiological data in order to assess the impact of IPEC on the environment.

1.2 SAMPLING AND ANALYSIS The environmental sampling media collected in the vicinity of IPEC and at distant locations included air particulate filters and charcoal cartridges, soil, drinking water, ground water, broadleaf vegetation, river water, shoreline sediment, bottom sediment, aquatic vegetation, fish, and invertebrates.

During 2020 there were 1183 samples collected from the atmospheric, aquatic, and terrestrial environments. This includes 163 exposure measurements which were obtained using environmental thermoluminescent dosimeters (TLDs).

A small number of inadvertent issues were encountered in 2020 in the collection of environmental samples in accordance with the IPEC Offsite Dose Calculation Manual (ODCM). Equipment failures and electrical outages resulted in a small number of instances in which lower than normal sampling volumes were collected at the airborne monitoring stations. A full description of all discrepancies encountered with the environmental monitoring program is presented in the Table B-1 of this report.

There were 1343 analyses performed on the environmental media samples. The analyzes of the 2020 Indian Point environmental samples were performed by several laboratories.

Thermoluminescent dosimeters were analyzed by Environmental Dosimetry Company (formerly Stanford Associates) of Sterling, MA. Teledyne Brown Engineering, Inc. of Knoxville, TN performed all the remaining analyses for 2020. Samples were analyzed as required by the IPEC ODCM.

1.3 LAND USE CENSUS The annual land use census in the vicinity of IPEC was conducted as required by the IPEC ODCM in May through October. No dairy animals whose milk is used for human consumption were identified within 5 miles of the Station during the census. Due to the difficulty of locating individual gardens and determining those having an area greater than 500 square feet, broadleaf sampling was performed. As allowed for in the ODCM, monthly broad leaf sampling may be used in lieu of a garden census.

Plant: Indian Point Energy Center I Year: 2020 I Page 9 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 1.4

SUMMARY

OF RESULTS Samples collected as part of the IPEC REMP continued to contain detectable amounts of naturally-occurring and some man-made radioactive materials. Offsite ambient radiation measurements using environmental TLDs beyond the site boundary ranged between 45 and 65 milli-Roentgens (mR) per year. The range of ambient radiation levels observed with the TLDs is consistent with natural-background radiation levels for New York.

Monitoring of the aquatic environment in the area of the station indicated the presence of the following potential station related radioactivity, tritium and cesium-137. Tritium was found in river water at the downstream mixing zone of the discharge canal at levels that were expected from routine plant operation, or other sources such as fallout from past weapons testing. Low-levels of cesium-137 were detected in Hudson River bottom sediment samples downstream of the discharge canal, as well as in the Off Verplanck, Lent's Cove, and Cold Spring locations.

Low levels of cesium-137 were also detected in one soil and one shoreline soil sample. The levels detected were consistent with historical findings. No other plant related activity was detected in any offsite samples. The predominant radioactivity for all samples was from non-plant related sources, such as fallout from nuclear weapons tests and naturally occurring radionuclides.

1.5 CONCLUSION

S The 2020 Radiological Environmental Monitoring Program for IPEC resulted in the collection and analysis of over a thousand environmental samples and measurements. The data obtained were used to determine the impact of IPEC's operation on the environment and on the general public.

In 2020 the only positive detectable plant related activity was two instances of low levels of H-3 detected in river water samples. An evaluation of direct radiation measurements, environmental sample analyses, and dose calculations demonstrates that all applicable federal criteria were met. Furthermore, radiation levels and resulting doses from station operation were a small fraction of those attributed to natural and man-made background radiation.

In summary, the levels of radionuclides in the environment surrounding Indian Point were within the historical ranges, i.e., previous levels resulting from natural and anthropogenic sources for the detected radionuclides. Further, IPEC operations in 2020 did not result in exposure to the public greater than the variability of environmental background levels.

Plant: Indian Point Energy Center I Year: 2020 I Page 10 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT SECTION

2.0 INTRODUCTION

Plant: Indian Point Energy Center I Year: 2020 I Page 11 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT

2.0 INTRODUCTION

2 .1 Overview The Radiological Environmental Monitoring Program (REMP) for 2020 performed by Entergy for the Indian Point Energy Center (IPEC) is discussed in this report. Since the operation of a nuclear power plant results in the release of small amounts of radioactivity and low levels of radiation, the Nuclear Regulatory Commission (NRC) requires a program to be established to monitor radiation and radioactivity in the environment (Reference 1). This report, which is submitted to the NRC annually per Indian Point Technical Specifications, summarizes the results of measurements of radiation and radioactivity in the environment in the vicinity of the IPEC and at distant locations during the period January 1 to December 31, 2020.

The REMP is used to measure the direct radiation and the airborne and waterborne pathway activity in the vicinity of the Indian Point site. Direct radiation pathways include radiation from buildings and plant structures, airborne and liquid material that might be released from the plant, cosmic radiation, and the naturally occurring radioactive materials in the ground. Analysis of thermoluminescent dosimeters (TLDs), used to measure direct radiation, indicated that there were no increased radiation levels attributable to plant operations.

The airborne pathway includes measurements of air, drinking water, and broad leaf vegetation samples. The airborne pathway measurements indicated that there was no adverse radiological impact to the surrounding environment attributed to Indian Point Station operations.

The waterborne pathway consists of Hudson River water, fish and invertebrates, aquatic vegetation, bottom sediment, and shoreline sediment. Measurements of the media comprising the waterborne pathway indicated that there was no adverse radiological impact to the surrounding environment attributed to Indian Point Station operations.

The ground water table is listed after the drinking water tables for ease of data comparison.

However, ground water is not a dose pathway since it is not a drinking water pathway at IPEC. It should be noted that IPEC has an extensive Groundwater Monitoring Program which is described in the annual Radioactive Effluent Release Reports.

These results are reviewed by IPEC's staff and have been reported semiannually or annually to the Nuclear Regulatory Commission and others for over 30 years.

This report contains a description of the REMP for IPEC and the conduct of that program in 2020 as required by the IPEC ODCM. Also included are summaries and discussions of the results of the 2020 program, trend analyses (where appropriate), comparison to historical results and evaluation of any potential impact on the environment. Results of the annual land use census, as well as the inter-laboratory comparison program are included, per the ODCM requirements.

Plant: Indian Point Energy Center I Year: 2020 I Page 12 of 128 ANNUAL RADIOLOGI CAL ENVIRONME NTAL OPERATING REPORT 2.2 Site Description The Indian Point site occupies 239 acres on the east bank of the Hudson River on a point of land at Mile Point 42.6. The site is located in the Village of Buchanan, Westchester County, New York. Three nuclear reactors, Indian Point Unit Nos. 1, 2 and 3, and associated buildings occupy approximately 35 acres. Unit 1 began operation in 1962 and was retired as a generating facility in 1974. Units 2 and 3 began operation 1974 and 1978. Indian Point Units 1 and 2 are owned by Entergy Nuclear Indian Point 2, LLC and Unit 3 is owned by Entergy Nuclear Indian Point 3 LLC. All three units are operated by Entergy Nuclear, although only Units 2 and 3 continue to operate.

2.3 Program Background Environmental monitoring and surveillance have been conducted at Indian Point since 1958, four years prior to the start-up of Unit 1. The pre-operational program was designed and implemented to determine the background radioactivity and to measure the variations in activity levels from natural and other sources in the vicinity, as well as fallout from atmospheric nuclear weapons tests. Thus, as used in this report, background levels consist of those resulting from both natural and anthropogenic sources of environmental radioactivity. Accumulation of this background data permits the detection and assessment of environmental activity attributable to plant operations.

2.4 Program Objectives The current environmental monitoring program is designed to meet two primary objectives:

1. To enable the identification and quantification of changes in the radioactivity of the area.

2. To measure radionuclide concentrations in the environment attributable to operations of the Indian Point site.

To identify changes in activity, the environmental sampling schedule requires that analyses be conducted for specific environmental media on a regular basis. The radioactivity profile of the environment is established and monitored through routine evaluation of the analytical results obtained.

The REMP designates sampling locations for the collection of environmental media for analysis. These sample locations are divided into indicator and control locations. Indicator locations are established near the site, where the presence of environmental radioactivity of plant origin is most likely to be detected. Control locations are established farther away (and upwind/upstream, Where applicable) from the site, where the level would not generally be affected by plant discharges. The use of indicator and control locations enables the identification of potential sources of detected radioactivity, thus meeting one of the program objectives.

Verification: of expected radionuclide concentrations resulting from effluent releases attributable to the site is another objective of the REMP, which is met by meeting the two

Plant: Indian Point Energy Center I Year: 2020 I Page 13 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT primary program objectives described above. Verifying projected concentrations through evaluating REMP data can be difficult since the environmental concentrations resulting from plant releases are typically too small to be detected. Plant related radionuclides were detected in 2020 in very low levels; however, residual radioactivity from atmospheric weapons tests and naturally occurring radioactivity were the predominant sources of radioactivity in the samples collected. Analysis of the 2020 REMP sample results confirms that environmental concentrations which could be attributed to radiological effluents were well below regulatory limits.

Plant: Indian Point Energy Center I Year: 2020 I Page 14 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT SECTION 3.0 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS

Plant: Indian Point Energy Center I Year: 2020 I Page 15 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 3.0 RADIOLOGICAL ENVIRONMENTAL SAMPLING PROGRAM REQUIREMENTS To achieve the objectives of the REMP and ensure compliance with the ODCM, sampling and analysis of environmental media are performed as outlined in Table A-1 and described in section 3.3.

3.1 Sample Collection Entergy personnel perform collection of environmental samples for the Indian Point site, with the exception of fish/invertebrate samples. Collection of fish and invertebrate samples is performed by a contracted environmental vendor, Normandeau Associates, Inc.

Environmental media are sampled at the locations specified in Table A-1 and shown in Figures A-1, A-2, and A-3. The samples are analyzed according to criteria established in the ODCM. These requirements include: methods of sample collection; types of sample analysis; minimum sample size required; lower limit of detection, which must be attained for each medium, sample, or analysis type, and environmental concentrations requiring special reports.

Table A-1 provides the sampling station number, location, sector, and distance from Indian Point, sample designation code, and sample type. This table gives the complete listing of sample locations used in the 2020 REMP.

Three maps are provided to show the locations of REMP sampling. Figure A-1 shows the sampling locations within two miles of Indian Point. Figures A-2 and A-3 show the sampling locations within ten miles of Indian Point.

3.2 Sample Analysis The analysis of the 2020 Indian Point environmental samples was performed by several laboratories. Thermoluminescent dosimeters were analyzed by Environmental Dosimetry Company (formerly Stanford Associates) of Sterling, MA. Teledyne Brown Engineering, Inc.

of Knoxville, TN performed all the remaining analyses.

3.3 Sample Collection and Analysis Methodology 3.3.1 Direct Radiation Direct gamma radiation is measured using integrating calcium sulfate thermoluminescent dosimeters (TLDs), which provide cumulative measurements of radiation exposure (i.e., total integrated exposures in milli-roentgen, mR) for a given period. The area surrounding the Indian Point site is divided into 16 compass sectors. Each sector has two TLD sample locations. The inner ring is located near the site boundary at approximately 1 mile (1.6 km).

The outer ring is located at approximately 5 miles (8 km) from the site (6.7- 8.0 km), see Figures A-1 and A-2. Additional TLD locations include a control location at Roseton (20.7 miles north) and eight locations of special interest. In total, there are 41 TLD sample sites, designated DR-1 through DR-41, with two TLDs placed at each site. TLDs are collected and processed on a quarterly basis. The results are reported as mR per standard quarter (91 days). The data reported is the average of the two TLDs from each sample site.

Plant: Indian Point Energy Center I Year: 2020 I Page 16 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 3.3.2 Airborne Particulates and Radioiodine Air samples were taken at eight locations varying in distance from 0.28 to 20. 7 miles (0.5 to 33 km) from the plant. These locations represent one control at sampling station 23 (AS) and seven indicator locations. In 2020 the air sampling station 44 Peekskill was moved to 108 Telcom Building. See table B-1C for further explanation. These indicator locations are at sampling stations 4 (A1), 5 (A4), 27, 29, 44, 94 (A2), 95 (A3), and 108. The locations are shown on Figures A-1, A-2, and A-3. The air samples are collected continuously by means of fixed air particulate filters followed by in-line charcoal cartridges. Both filters and cartridges are changed on a weekly basis. The filters are analyzed for gross beta and the cartridge samples for radioiodine. In addition, gamma spectroscopy analysis (GSA) is performed on quarterly composites of the air particulate filters.

3.3.3 Drinking Water Samples of drinking water are collected monthly from the Camp Field Reservoir (3.4 miles NE, sample station 7, sample designation Wb1) and New Croton Reservoir (6.3 miles SE, sample station 8); see Figure A-2 and Figure A-3. Each monthly sample is approximately 4 liters and is analyzed for gross beta and gamma-emitting radionuclides. Monthly samples are composited quarterly and analyzed for tritium.

3.3.4 Groundwater Water Groundwater samples are obtained semi-annually at Lafarge (106). Samples are analyzed for tritium, strontium-90, nickel-63 and by gamma spectroscopy.

3.3.5 Soil Soil samples are collected from two indicator locations (sampling stations 94 and 95), and one control location (23) on an annual basis; see Figure A-3. They are approximately 2 kg in size and consist of about twenty 2-inch deep cores. The soil samples are analyzed by gamma spectroscopy.

3.3.6 Broad Leaf Vegetation Broad Leaf vegetation samples are collected from three locations during the growing season.

The indicator locations are sampling stations 94 (lc2) and 95 (lc1), and the control location is at sampling station 23 (lc3). See Figures A-1 and A-2. The samples are collected monthly, when available, and analyzed by gamma spectroscopy. These samples consist of at least 1 kg of leafy vegetation and are used in the assessment of the food product and milk ingestion pathways.

3.3.7 Hudson River Water Hudson River water sampling is performed continuously at the intake structure (sampling station 9, Wa1) and at a point exterior to the discharge canal where Hudson River water and water from the discharge canal mix (sampling station 10, Wa2); see Figure A-1. In 2020 sampling station 9, Wa1 was relocated upstream to Roseton to serve as a better control. An automatic composite sampler is used to take representative samples. On a weekly basis, accumulated samples are taken from both sample points. These weekly river water samples are composited for monthly gamma spectroscopy analysis and quarterly for tritium analysis.

Plant: Indian Point Energy Center I Year: 2020 I Page 17 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 3.3.8 Hudson River Bottom Sediment Bottom sediment and benthos are sampled at four locations: three indicator locations (sampling stations 10, 17, and 28) and one control location (84), along the Hudson River, once each spring and summer; see Figure A-3. These samples are obtained using a Peterson grab sampler or similar instrument. The bottom sediment samples are analyzed by gamma spectroscopy.

3.3.9 Hudson River Shoreline Soil Shoreline soil samples are collected at three indicator and two control locations along the Hudson River. The indicator locations are at sampling stations 53 (Wc1), 28, and 17. The control locations are at sampling stations 50 (Wc2) and 84. Figures A-1, A-2, and A-3 show these locations. The samples are gathered at a level above low tide and below high tide and are approximately 2-kg grab samples. These samples are collected at greater than 90 days apart and are analyzed by gamma spectroscopy and for strontium-90.

3.3.10 Hudson River Aquatic Vegetation During the spring and summer, aquatic vegetation samples are collected from the Hudson River at two indicator locations (sampling stations 17 and 28) and one control location (84);

see Figure A-3. Samples of aquatic vegetation are obtained depending on sample availability. These samples are analyzed by gamma spectroscopy.

3.3.11 Fish and Invertebrates Fish and invertebrate samples are obtained from the Hudson River at locations upstream and downstream of the plant discharge. The indicator location (downstream sample point) is designated as sampling station 25 (lb1), and a second sampling station 107 is located further downstream. The control location (upstream) is at sampling station 23 (lb2). See Figures A-1 and A-2. These samples are collected in season or semiannually if they are not seasonal.

The fish and invertebrates sampled are analyzed by gamma spectroscopy as well as for strontium-90 and for nickel-63.

3.3.12 Land Use Census In addition to the sampling outlined in Table A-1, there is an environmental surveillance requirement that an annual land use census be performed. Each year a land use census consisting "of milch animal and residence surveys is conducted during the growing season to determine the current utilization of land within 5 miles (8 km) of the site. These surveys are used to determine whether there are changes in existing conditions that warrant changing the sampling program. The results of the census are discussed in Section 4.12.

For example, the milch animal census is used to identify animals producing milk for human consumption within 5 miles (8 km) of Indian Point. This census consists of visual field surveys of the areas where a high probability of milch animals exists and confirmation through New York State records or with personnel such as feed suppliers who deal with farm animals and dairy associations.

Visual inspections are made of the 5-mile area around the Indian Point Site during routine sample collections and emergency plan equipment inspections in the area throughout the

Plant: Indian Point Energy Center I Year: 2020 I Page 18 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT year. An extensive land survey is conducted of the 5-mile area in an attempt to identify new residential areas, commercial developments and to identify milch animals in pasture.

A garden census is not required, since the ODCM allows sampling of vegetation in two sectors near the site boundary in lieu of a garden census. The sectors are chosen to be in the pre-dominant wind directions with the highest predicted deposition rates.

3.4 Statistical Methodology There are several statistical calculation methodologies used in evaluating the data from the Indian Point REMP. These methods include determination of Lower Limits of Detection (LLD) and the Minimum Detectable Concentration (MDC), and estimation of the mean and associated propagated error.

3.4.1 Lower Limit of Detection (LLD)

The LLD is the smallest concentration of radioactive material in a sample that will yield a net count above system background, and be detected with 95% probability, with a 5% probability of falsely concluding that a blank observation represents a "real" signal.

For a particular measurement system (which may include radiochemical separation):

2.71 +3.29sb* .J1+(Tb)

LLD= Ts Ts E* V* k* Y* e--<t Where:

LLD= The lower limit of detection as defined above (as picocurie per unit mass or volume)

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

Tb= The background count time in minutes E= The counting efficiency (as counts per transformation)

V= The sample size (in units of mass or volume) k= A constant for the number of transformations per minute per unit of activity (normally, 2.22E+6 dpm per uCi)

Y= The fractional radiochemical yield (when applicable)

J\ = The radioactive decay constant for the particular radionuclide t= The elapsed time between midpoint of sample collection and time of counting Note: The above LLD formula accounts for differing background and sample count times.

The Radiological Environmental Monitoring Program, REMP, may use an LLD formula that assumes equal background and sample count times, when appropriate.

The constants 2. 71 and 3.29 and the general LLD equation were derived from References 2 and 3.

Plant: Indian Point Energy Center Year: 2020 Page 19 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT The value of Sb used in the calculation of the LLD for a detection system shall be based on the actual observed variance of the background counting rate or of the counting rate of the blank samples (as appropriate) rather than on an unverified theoretically predicted variance.

In calculating the LLD for a radionuclide determined by gamma ray spectrometry, the background shall include the typical contributions of other radionuclides normally present in the samples. Typical values of E, V, Y, and t shall be used in the calculation. The background count rate is calculated from the background counts that are determined by a separate background count or in the case of gamma ray spectroscopy, from adjacent channels of the energy band of the gamma ray peak used for the quantitative analysis for that radionuclide.

It should be recognized that the LLD is defined as an a priori (before the fact) limit representing the capability of a measurement process and not as an a posteriori (after the fact) limit for a particular measurement. To document the post priori (after the fact) measurement statistics, the MDC is calculated after the measurement using the same equation as above.

To handle the a posteriori problem, a decision level must be defined. To minimize the number of false positives, a value is not considered positive unless it is greater than the MDC or 3 times the total standard deviation of the post priori measurement, where MDC is the post priori (after the fact) measurement statistic calculated similar to the LLD equation listed above (for Tb= Ts, the term 3.29 Sb* [(1 + (Tb/ Ts )) 112] = 4.66 Sb).

The ODCM required lower limits of detection (LLD) for Indian Point sample analyses are presented in Table A-2. These required lower limits of detection are not the same as the lower limits of detection or critical levels actually achieved by the laboratory. The laboratory's lower limits of detection and critical levels must be equal to or lower than the required levels presented in Table A-2.

Table A-3 provides the reporting level for radioactivity in various media. Sample results that exceed these levels and are due to plant operations require that a special report be submitted to the NRC.

3.4.2 Table Statistics The averages shown in the summary table (Table B-2) are the averages of the positive values in accordance with the NRC's Branch Technical Position (BTP) to Regulatory Guide 4.8 (Reference 4). Samples with"<" values are not included in the averages.

It should be noted that this statistic for the mean using only positive values tends to strongly bias the average high, particularly when only a few of the data are measurably positive. The REMP data show few positive values; thus the corresponding means are biased high.

Exceptions to this include direct radiation measured by TLDs and gross beta radioactivity in air, which show positive monitoring results throughout the year.

The historical data tables contain the annual averages of the positive values for each year for 201 O through 2020. The historical averages are calculated using only the positive values presented for 2010 through 2019. The 2020 average values are included in these historic tables for purposes of comparison.

Plant: Indian Point Energy Center I Year: 2020 I Page 20 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE A-1 INDIAN POINTREMPSAMPLING STATION LOCATIONS

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.. ,,,.,,;;:,;;;<?,"'i; Onsite - 0.35 Mi (SSE) at 3 DR8 Service Center Building Direct Gamma 158° A1 Onsite - 0.28 Mi (SW) at Air Particulate 4 Algonquin Gas Line A1 234° Radioiodine A4 Air Particulate Onsite - 0.88 Mi (SSW) 5 A4 NYU Tower Radioiodine at 208° DR10 Direct Gamma 7 Wb1 Camp Field Reservoir 3.4 Mi (NE) at51° Drinking Water 8 ** Croton Reservoir 6.3 Mi (SE) at 124° Drinking Water 9**** Wa1 Plant Inlet (Hudson River Intake)* 20.7 Mi (N) at 357° HR Water Wa2 Onsite - 0.3 Mi (WSW) at HR Water 10 Discharge Canal (Mixing Zone)

• • 249° HR Bottom Sediment Onsite - 0.3 Mi (SE) at 14 DR7 Water Meter House Direct Gamma 133°

• • HR Aquatic Vegetation 17 ** Off Verplanck 1.5 Mi (SSW) at 202.5° HR Shoreline Soil

• • HR Bottom Sediment Cortlandt Yacht Club 20 DR38 1.5 Mi (S) at 180° Direct Gamma (AKA Montrose Marina)

• • Precipitation A5 Air Particulate A5 Radioiodine 23 DR40 Roseton* 20.7 Mi (N) at 357° Direct Gamma lc3 Broad Leaf Vegetation

• • Soil lb2 Fish & Invertebrates 25 lb1 Downstream Downstream Fish & Invertebrates

• • Air Particulate 27 ** Croton Point 6.36 Mi (SSE) at 156° Radioiodine DR41 Direct Gamma

• • HR Shoreline Soil DR4 Direct Gamma 28 Lent's Cove 0.45 Mi (ENE) at 069°

• • HR Bottom Sediment

• • HR Aquatic Vegetation

• • Air Particulate 29 ** Grassy Point 3.37 Mi (SSW) at 196° Radioiodine DR39 Direct Gamma 33 DR33 Hamilton Street (Substation) 2.88 Mi (NE) at 053° Direct Gamma Onsite - 0.52 Mi (S) at 34 DR9 South East Corner of Site Direct Gamma 179° Onsite - 0.37 Mi (E) at 35 DRS Broadway & Bleakley Avenue Direct Gamma 092° 38 DR34 Furnace Dock (Substation) 3.43 Mi (SE) at 141° Direct Gamma

• = Control location

• • =Locations listed do not have sample designation locations specified in the ODCM HR = Hudson River

• • • = In 2020 Air sampler station 44 Peekskill was relocated to 108 Telcom. Bldg.

• • • • = In 2020 River water station 9 Plant Inlet (Hudson River Intake) was moved to Roseton.

Plant: Indian Point Energy Center Year: 2020 Page 21 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE A-1 INDIAN POINT REMP SAMPLING STATION LOCATIONS tstiugf:!r f!~~~~'WlJJi~ 1,~~,ta~;i .,. :!~<~ltfiJ{~f~~~t**fl *3/4:/if::I  :: ; ,:, l~}1?}5,1~l1~s~1tr?!~ 1~~;;,ti~~ 0f~lrf~JI~j~r

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• • Precipitation 44*** ** Peekskill Gas Holder Bldg 1.84 Mi (NE) at 052° Air Particulate

• • Radioiodine 50 Wc2 Manitou Inlet* 4.48 Mi (NNW) at 347° HR Shoreline Soil Wc1 HR Shoreline Soil 53 White Beach 0.92 Mi (SW) at 226° DR11 Direct Gamma 56 DR37 Verplanck - Broadway & 6th Street 1.25 Mi (SSW) at 202° Direct Gamma 57 DR1 Roa Hook 2 Mi (N) at 005° Direct Gamma 58 DR17 Route 9D - Garrison 5.41 Mi (N) at 358° Direct Gamma 59 DR2 Old Pemart Avenue 1.8 Mi (NNE) at 032° Direct Gamma Gallows Hill Road & Sprout Brook 60 DR18 5.02 Mi (NNE) at 029° Direct Gamma Road 61 DR36 Lower South Street & Franklin Street 1.3 Mi (NE) at 052° Direct Gamma Westbrook Drive 62 DR19 5.03 Mi (NE) at 062° Direct Gamma (near the Community Center)

Lincoln Road - Cortlandt 64 DR20 4.6 Mi (ENE) at 067° Direct Gamma (School Parking Lot) 66 DR21 Croton Avenue - Cortlandt 4.87 Mi (E) at 083° Direct Gamma 67 DR22 Colabaugh Pond Road - Cortlandt 4.5 Mi (ESE) at 114° Direct Gamma 69 DR23 Mt. Airy & Windsor Road 4.97 Mi (SE) at 127° Direct Gamma 71 DR25 Warren Ave - Haverstraw 4.83 Mi (S) at 188° Direct Gamma 72 DR26 Railroad Avenue & 9W - Haverstraw 4.53 Mi (SSW) at 203° Direct Gamma Willow Grove Road & Captain 73 DR27 4.97 Mi (SW) at 226° Direct Gamma Faldermeyer Drive 74 DR12 West Shore Drive - South 1.59 Mi (WSW) at 252° Direct Gamma 75 DR31 Palisades Parkway 4.65 Mi (NW) at 225° Direct Gamma 76 DR13 West Shore Drive - North 1.21 Mi (W) at276° Direct Gamma 77 DR29 Palisades Parkway 4.15 Mi (W) at 272° Direct Gamma 78 DR14 Rt. 9W across from R/S #14 1.2 Mi (WNW) at 295° Direct Gamma 79 DR30 Anthony Wayne Park 4.57 Mi (WNW) at 296° Direct Gamma 80 DR15 Route 9W South of Ayers Road 1.02 Mi (NW) at317° Direct Gamma 81 DR-28 Palisades Pkwy - Lake Welch Exit 4.96 Mi (WSW) at 310° Direct Gamma 82 DR16 Ayers Road 1.01 Mi (NNW) at 334° Direct Gamma 83 DR32 Route 9W - Fort Montgomery 4.82 Mi (NNW) at 339° Direct Gamma

• • HR Aquatic Vegetation 84 ** Cold Spring

• 10.88 Mi (N) at 356° HR Shoreline Soil

• • HR Bottom Sediment 88 DR6 Reuter Stokes Pole #6 0.32 Mi (ESE) at 118° Direct Gamma Highland Ave & Sprout Brook Road 89 DR35 2.89 Mi (NNE) at 025° Direct Gamma (near rock cut)

• = Control location

• • =Locations listed do not have sample designation locations specified in the ODCM HR= Hudson River

• • • = In 2020 Air sampler station 44 Peekskill was relocated to 108 Telcom. Bldg.

• • • • = In 2020 River water station 9 Plant Inlet (Hudson River Intake) was moved to Roseton.

Plant: Indian Point Energy Center I Year: 2020 I Page 22 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE A-1 INDIAN POINT REMP SAMPLING STATION LOCATIONS SAMPLING, ***' '/SAMPLE:;.'~ .* i.\ *. ,, .. ;;., ';; *- ,.  :;.,;* .... , 1*., *:  ;*.,;,,, ;;>**v;., ~-;--,:: ; -:,~ ,,..;.,,*,;.;/'*.* *;_*',*"*:::*,,,

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90 DR3 Charles Point 0.88 Mi (NE) at 047° Direct Gamma 92 DR24 Warren Road - Cortlandt 3.84 Mi (SSE) at 149° Direct Gamma A2 Air Particulate A2 Onsite- 0.39 Mi (S) at Radioiodine 94 IPEC Training Center lc2 193° Broad Leaf Vegetation

• • Soil A3 Air Particulate A3 Onsite - 0.46 Mi (SSW) at Radioiodine 95 Meteorological Tower lc1 208° Broad Leaf Vegetation

• • Soil 106 ** Lafarge Monitoring Well 0.63 mi SW Groundwater 2.5 mi SSW 107 ** Vicinity of Haverstraw Bay Fish & Invertebrates (downstream)

Air Particulate 108*** ** Telecomm Bldg. 0.36 mi ESE Radioiodine

• = Control location

• * = Locations listed do not have sample designation locations specified in the ODCM HR= Hudson River

• • • = In 2020 Air sampler station 44 Peekskill was relocated to 108 Telcom. Bldg.

• • • • = In 2020 River water station 9 Plant Inlet (Hudson River Intake) was moved to Roseton.

Plant: Indian Point Energy Center I Year: 2020 I Page 23 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FIGURE A-1 SAMPLING LOCATIONS Within Two Miles of Indian Point 1 mile

~ Hodson River Shoreline V Soil Sampling Location Fish and Invertebrates lb# (where available) downstream Hodson River

~ Hodson River Sample

~ Upstream & Downstream Airborne Iodine/Pa11 Sample Location Direct Radiation Sample Location DR# Q BroadleafVegetatlon L'.::.J Sample Location I

Plant: Indian Point Energy Center j Year: 2020 j Page 24 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FIGURE A-2 SAMPLING LOCATIONS Greater than Two Miles from Indian Point r

tP Ib2

{Fi'! ud Invertebrat,~

(wllere available) upstr~am Hudson River 1'

s,

.............- Moheg. J rsoo La e Valley Y<x town 0 ~

Peekskill Yo. 1 n AfTlaw Cortlandt Indian Manor Point Bt anan Montrose

,I Broadleaf  : ,.,

I Vegetation or Sample C1ugm .

Location Har man Direct Radiation Sample Location DR# traw Croton On Hudson Westchester r:::7 Airborne Iodine &

County LJ Particulate Sam.Pl$

5 miles Chapp

Plant: Indian Point Energy Center I Year: 2020 I Page 25 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT FIGURE A-3 SAMPLING LOCATIONS Additional Sampling Locations I

1mman Yorktown Bt ~ 94:

mil ontrose  :

95 Cr g rs s:<;;)

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P fudpi1atioo J ,.,

r:-\.orinki ' ater t-<;r.*. *.'rf!w

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~

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L.::.J Particul - G..;; 1 fo1titori:ng \ ell, W or ite Boundary

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.._~ .... ud nRinir C BoUom Sediment

Plant: Indian Point Energy Center I Year: 2020 I Page 26 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE A-2 LOWER LIMIT OF DETECTION (LLD) REQUIREMENTS FOR ENVIRONMENTAL SAMPLES AIRBORNE FISH FOOD SOIL or RADIONUCLIDE WATER MILK PRODUCTS SEDIMENT PARTIUCLA TE OR (pCi/kg, ANALYSIS (pCi/L) (pCi/L) (pCi/kg, wet) (pCi/kg, dry)

GASES (pCi/m 3 ) wet)

Gross Beta 4 0.01 H-3 2,000 (d)

Mn-54 15 130 Fe-59 30 260 Co-58 15 130 Co-60 15 130 Ni-63 (f) 30 100 Zn-65 30 260 Sr-90 (f) 1 5 50 Zr-95 30 Nb-95 15 1-131 1 (d) 0.07 1 60 Cs-134 15 0.05 130 15 60 150 Cs-137 18 0.06 150 18 80 180 Ba-140 60 60 La-140 15 15

Plant: Indian Point Energy Center I Year: 2020 I Page 27 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE A-2 LOWER LIMIT OF DETECTION (LLD) REQUIREMENTS FOR ENVIRONMENTAL SAMPLES Table Notation (a) This list does not mean that only these nuclides are to be considered . Other peaks that are identifiable, together with those of the above nuclides, shall also be analyzed and reported in the Annual Radiological Environmental Operating Report pursuant to the ODCM.

(b) Required detection capabilities for thermoluminescent dosimeters used for environmental measurements are given in Regulatory Guide 4.13 .

(c) The LLD is defined as the smallest concentration of radioactive material in a sample that will yield a net count, above system background, that will be detected with 95% probability with only 5% probability of falsely concluding that a blank observation represents a "real" signal.

It should be recognized that the LLD is defined as an ~ priori (before the fact) limit representing the capability of a measurement system and not as an 2 posteriori (after the fact) limit for a particular measurement.

Analyses shall be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally background fluctuations , unavoidable small sample sizes, the presence of interfering nuclides, or other uncontrollable circumstances may render these LLDs unachievable .

In such cases, the contributing factors shall be identified and described in the Annual Radiological Environmental Operating Report pursuant to the ODCM.

(d) These LLDs are for drinking water samples. If no drinking water pathway exists, the LLDs may be increased to 3,000 pCi/liter for H-3 and 15 pCi/liter forl-131.

(e) These required lower limits of detection are associated only with the REMP requirements. The Radiological Ground Water Monitoring Program may involve unique reporting level criteria, independent of the REMP, and defined in station procedures .

(f) Sr-90 and Ni-63 are included in this table due to their historical presence in ground water and possible migration to the environment.

Plant: Indian Point Energy Center I Year: 2020 I Page 28 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE A-3 REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS IN ENVIRONMENTAL SAMPLES AIRBORNE FOOD RADIONUCLIDE WATER FISH MILK (pCi/L) PARTIUCLATE OR PRODUCTS ANALYSIS (pCi/kg, wet) (pCi/L)

GASES (pCi/m 3 ) (pCi/kg, wet)

H-3 20,000

• Mn-54 1,000 30 ,000 Fe-59 400 10,000 Co-58 1,000 30 ,000 Co-60 300 10,000 Ni-63 *** 300 1,000 Zn-65 300 20 ,000 Sr-90 *** 8* 40 Zr-95 400 Nb-95 400 1-131 2* 0.9 3 100 Cs-134 30 10 1,000 60 1,000 Cs-137 50 20 2,000 70 2,000 Ba-140 200 300 La-140 200 300 Values provided are for drinking water pathways . If no drinking water pathway exists, higher values are allowed , as follows :

H-3 30 ,000 pCi/L (This is a 40 CFR 141 value)

Sr-90 12 pCi/L 1-131 20 pCi/L

• • These reporting levels are associated only with the REMP requirements. The Radiological Ground Water Monitoring Program may involve unique reporting level criteria , independent of the REMP ,

and defined in station procedures .

• • • Sr-90 and Ni-63 are included in this table due to their historical presence in ground water and possible migration to the environment

Plant: Indian Point Energy Center I Year: 2020 I Page 26 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE A-2 LOWER LIMIT OF DETECTION {LLD) REQUIREMENTS FOR ENVIRONMENTAL SAMPLES AIRBORNE FOOD SOIL or RADIONUCLIDE FISH WATER MILK PRODUCTS SEDIMENT PARTIUCLA TE OR (pCi/kg, ANALYSIS (pCi/L) (pCi/L) (pCi/kg, wet) (pCi/kg, dry)

GASES (pCi/m 3) wet)

Gross Beta 4 0.01 H-3 2,000 (d)

Mn-54 15 130 Fe-59 30 260 Co-58 15 130 Co-60 15 130 Ni-63 (f) 30 100 Zn-65 30 260 Sr-90 (f) 1 5 50 Zr-95 30 Nb-95 15 1-131 1 (d) 0.07 1 60 Cs-134 15 0.05 130 15 60 150 Cs-137 18 0.06 150 18 80 180 Ba-140 60 60 La-140 15 15

Plant: Indian Point Energy Center [ Year: 2020 [ Page 29 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT SECTION 4.0 INTERPRETATION AND TRENDS OF RESULTS

Plant: Indian Point Energy Center I Year: 2020 I Page 30 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 4.0 INTERPRETATION AND TRENDS OF RESULTS The 2020 Radiological Environmental Monitoring Program (REMP) was conducted in accordance with Indian Point's Offsite Dose Calculation Manual ODCM. The ODCM contains requirements for the number and distribution of sampling locations, the types of samples to be collected, and the types of analyses to be performed for measurement of radioactivity.

The REMP at Indian Point includes measurements of radioactivity levels in the following environmental pathways.

Direct Gamma Radiation Drinking Water Groundwater Soil Broad Leaf Vegetation Hudson River Water Bottom Sediment Shoreline Soil Aquatic Vegetation Fish and Invertebrates Airborne Particulates and Radioiodine An annual land use and milch animal census is also part of the REMP.

To evaluate the contribution of plant operations to environmental radioactivity levels, other man-made and natural sources of environmental radioactivity, as well as the aggregate of past monitoring data, must be considered. It is not merely the detection of a radionuclide, but the evaluation of the location, magnitude, source, and history of its detection that determines its significance. Therefore, we have reported the data collected in 2020 and assessed the significance of the findings.

A summary of the results of the 2020 REMP is presented in Table B-2. This Table lists the mean and range of all positive results obtained for each of the media sampled at ODCM indicator and control locations. Discussions of these results and their evaluations are provided below.

The radionuclides detected in the environment can be grouped into three categories: (1) naturally occurring radionuclides; (2) radionuclides resulting from weapons testing and other non-plant related, anthropogenic sources; and (3) radionuclides that could be related to plant operations.

The environment contains a broad inventory of naturally occurring radionuclides which can be classified as, cosmic ray induced (e.g., Be-7) or geologically derived (e.g., Ra-226 and progeny, Th-228 and progeny, and K-40.) These radionuclides constitute the majority of the background radiation source and thus account for a majority of the annual background dose detected. Since the detected concentrations of these radionuclides were consistent at indicator and control locations, and unrelated to plant operations, their presence is noted only in the data tables and will not be discussed further.

The second group of radionuclides detected in 2020 consists of those resulting from past weapons testing in the earth's atmosphere. The more recent contamination events resulting from the Chernobyl and Fukushima accidents only indicated detectable activity shortly after their occurrences (Reference 5). However, weapons testing in the 1950's and 1960's resulted in a significant atmospheric radionuclide inventory, which, in turn, still contributes to the

Plant: Indian Point Energy Center I Year: 2020 I Page 31 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT concentrations in the ecological systems. Although reduced in frequency, atmospheric weapons testing continued into the 1980's. The resultant radionuclide inventory of some ,

radionuclides, although diminishing with time (e.g., through radioactive decay and natural dispersion processes), remains detectable.

In 2020, the detected radionuclides that may be attributable to past atmospheric weapons testing consisted of Cs-137 in several media. The levels detected were consistent with the historical levels of radionuclides resulting from weapons tests as measured in previous years.

The final group of radionuclides detected by the 2020 REMP comprises those that may be attributable to current plant operations. During 2020, Cs-137 and Tritium were the only potentially plant-related radionuclides detected in any environmental samples.

H-3 may be present in the local environment due to either natural occurrence, other man-made sources, or as a result of plant operations. Natural occurrence is very low (on the order of approximately 5 pCi/liter - well below typical detectable levels). The major source of H-3 is typically from above ground nuclear weapons testing, in the range of 50 to 150 pCi/liter).

Other sources include weapons production and industrial uses where levels are highly dependent on the release rates and distance from the source term. One such industrial source is nuclear power plant operation. In 2020, very low levels of H-3 were detected in two river water samples.

Cs-137 is ubiquitous in the environment from atmospheric testing debris and a lesser amount from the Chernobyl accident. In 2020, there were seven detections of Cs-137 in bottom sediment and shoreline soil at indicator locations. Cs-137 was also detected in one soil samples obtained. In all cases, the Cs-137 concentrations, when detected, were consistent with historical values.

Strontium-90 (Sr-90) may also be present in the environment from atmospheric testing debris. Sr-90 was not detected in any of the fish, invertebrate, shoreline soil, or REMP groundwater samples.

1-131 is also produced in fission reactors, but can result from non-plant related anthropogenic sources, e.g., medical administrations, such as has been noted in previous years. 1-131 was not detected in 2020 in aquatic or terrestrial vegetation indicator and control locations.

Co-58 and Co-60 are activation/corrosion products also related to plant operations. They are produced by neutron activation in the reactor core. Co-58 has a much shorter half-life than Co-60. If Co-58 and Co-60 are concurrently detected in environmental samples, then the source of these radionuclides is more likely the result of recent releases. When significant concentrations of Co-60 are detected but no Co-58, there is an increased likelihood that the Co-60 is due to residual Co-60 from past operations. There was no Co-58 or Co-60 detected in the 2020 REMP, although they were observed in historical data.

In the following sections, a summary of the results of the 2020 REMP is presented by sample medium and the significance of any positive findings discussed. As previously mentioned, Table 8-2 provides an annual summary of the following media.

Plant: Indian Point Energy Center I Year: 2020 I Page 32 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 4.1 Direct Radiation The environmental TLDs used to measure the direct radiation were TLDs supplied and processed by Environmental Dosimetry Company. In 2020, the TLD program produced a consistent picture of ambient background radiation levels in the vicinity of the Indian Point Station. A summary of the annual TLD data is provided in Table B-2 and all the TLD data are presented in Tables B-3, B-4 and B-5. TLD sample site DR-40 is the control site for the direct radiation (DR) series of measurements.

Table B-3 provides the quarterly and annual average reported doses in mR per standard quarter for each of the direct radiation sample points, DR-1 through DR-41. Table B-4 provides the mean, standard deviation, minimum and maximum values in mR per year for the years 2011 through 2019. The 2020 means are also presented in Table B-4. Table B-5 presents the 2020 TLD data for the inner ring and outer ring of TLDs. The table also provides the sector for each of the DR sample points.

The 2020 mean value for the indicator direct radiation sample points was 14.0 mR per standard quarter - which is consistent with historical values. At those locations where the 2020 mean value was higher than historical means, they are within historical bounds for the respective locations.

The DR sample locations are arranged so that there are two concentric rings of TLDs around the Indian Point site. The inner ring (DR-1 to DR-16) is close to the site boundary. The outer ring (DR-17 to DR-32) has a radius of approximately 5 miles from the three Indian Point units.

The results of the annual totals for these two rings of TLDs are provided in Table B-5. The annual average for the inner ring was 14.0 mR per standard quarter and also average for the outer ring was 14.2 mR per standard quarter. The control location average for 2020 was 15.4 mR per standard quarter.

Table C-1 and Figure C-1 present the 10-year historical averages for the inner and outer rings of TLDs. The 2020 averages are consistent with the historical data. The 2020 and previous years' data show that there is no measurable direct radiation in the environment due to the operation of the Indian Point site.

4.2 Airborne Particulates and Radioiodine The results of the analyses of weekly air particulate filter samples for gross beta activity are presented in Table B-6 and the weekly charcoal cartridge analytical results are presented in Table B-7.

Gross beta activity was found in air particulate samples throughout the year at all indicator and control locations. The average gross beta activity for the nine indicator air sample locations was 0.013 pCi/m 3 and the average for the control location was 0.013 pCi/m 3 . The activities detected were consistent for all locations, with no significant differences in gross beta activity in any sample due to location.

The results of the gamma spectral analyses (GSA) of the quarterly composites of these samples are shown in Table B-8. These quarterly composite air samples indicate that no

Plant: Indian Point Energy Center Year: 2020 Page 33 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT reactor-related radionuclides were detected and that only Be-7, a naturally-occurring radionuclide was present at detectable levels.

The mean annual gross beta concentrations and Cs-137 concentrations in air for the past 10 years are presented in Table C-2. From this table and Figure C-2, it can be seen that the average 2020 gross beta concentration was consistent with historical levels. Cs-137 has not been detected since 1987. This is consistent with the trend of decreasing ambient Cs-137 concentrations in recent years.

From the data, it can be seen that no airborne radioactivity attributable to the operation of Indian Point was detected in 2020.

4.3 Drinking Water Results of the gross beta, tritium and gamma spectroscopy analyses of the monthly drinking water samples are in Table 8-9. Other than Gross Beta activity consistent with historical values, no radioactivity was detected in drinking water samples. This has historically been the case for the radionuclide results for this media. Operation of the Indian Point units had no detectable radiological impact on drinking water.

4.4 Ground Water Data resulting from analysis of the groundwater samples for gamma emitters, tritium analysis, Ni-63 and Sr-90 are given in Table 8-10. No plant related nuclides were noted in the sample.

4.5 Soil Table 8-11 contains the results of the soil samples for 2020. Other than naturally occurring radionuclides, very low levels of Cs-137 were detected in one soil sample consistent with historical results.

4.6 Broad Leaf Vegetation Data from analysis of the 2020 samples are presented in Table 8-12. Table C-6 contains an historical summary and Figure C-6 is an illustration of the broad leaf vegetation analysis results. There were no plant related nuclides detected in the 2020 samples. The detection of low levels of Cs-137 has occurred sporadically at indicator locations at relatively low concentrations for the past ten years, most likely the result of previous atmospheric weapons testing.

4. 7 Hudson River Water Data resulting from analysis of monthly Hudson River water samples for gamma emitters and quarterly composites of H-3 are presented in Tables 8-13.

The only plant related activity detected was H-3; detected at low levels in two indicator samples. The levels are consistent with occasional historical detection of H-3 related to plant operation. Table C-3 shows historical H-3 concentrations at the plant inlet and discharge points. Table C-8 contains a comparison of H-3 detected at the plant discharge (Hudson River Water mixing point) versus calculated quarterly average effluents concentrations. The

Plant: Indian Point Energy Center I Year: 2020 I Page 34 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT data in table C-8 provides assurance that the REMP is indeed providing verification of the calculated radionuclide concentrations resulting from effluent releases attributable to the site.

4.8 Hudson River Bottom Sediment Table 8-14 contains the results of the analysis of bottom sediment samples for 2020.

Cesium-137 was detected in five of six indicator station samples, and one of two control location samples. Detection of positive levels of Cs-137 in river bottom sediment is not unusual. Cs-137 is often detected in the control location sediments and therefore not likely due to plant releases.

Historical levels of Cs-137 in bottom sediment samples are shown in table C-9 and figure C-

9. This data shows the continued detection of Cs-137 in bottom sediment samples at varying levels, and demonstrates that the levels observed during 2020 sampling are within the range of levels identified in historical samples.

4.9 Hudson River Shoreline Soil Table 8-15 contains the results of the gamma spectroscopic and strontium-90 analyses of the shoreline soil samples. In addition to the naturally occurring radionuclides, Cs-137 was identified in one of the Hudson River shoreline soil samples in 2020.

An historical look at Cs-137 detected in shoreline soil at indicator and control locations can be viewed in Table C-5 and Figure C-5. Cesium-137 has been present in this media, both at indicator and occasionally at the control location, at a consistent level over the past ten years.

Cesium-134 and Cs-137 are both discharged from the plant in similar quantities. The lack of Cs-134 activity is an indication that the primary source of the Cs-137 in the shoreline soil is legacy contamination from weapons fallout.

Strontium-90 (Sr-90) was not detected in any of the six indicator location samples or any of the control location samples.

4.10 Hudson River Aquatic Vegetation Table B-16 results show no plant related radionuclides were detected in any indicator or control aquatic vegetation samples in 2020. This is consistent with historical findings.

4.11 Fish and Invertebrates Table 8-17 contains the results of the analysis of fish and invertebrate samples for 2020.

No plant related radionuclides were detected. This is consistent with historical results which are shown in table and figure C-7.

4.12 Land Use Census A census was performed in the vicinity of Indian Point in 2020. This census consisted of a milch animal and a residence census. Results of this census are presented in Tables 8-18 and 8-19.

Plant: Indian Point Energy Center Year: 2020 Page 35 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT The results of the 2020 census were generally same as the 2019 census results. Although in 2019, the presence of goats was noted on a property located less than 5.0 miles of IPEC, discussions with the owner of the property indicated that the goats did not produce milk for human consumption. Similar to 2019, it was noted in 2020 that no animals were producing milk for human consumption at this location or any other location within 5 miles to IPEC.

However, discussions with the owner for the 2020 land use surveys confirmed that the goats did not produce milk for human consumption and are therefore not milch animals.

The 2020 land use census indicated there were no new residences that were closer in proximity to IPEC.

The ODCM allows the sampling of broad leaf vegetation in two sectors at the site boundary in lieu of performing a garden census. Analysis results for these two sectors are discussed in Section 4.6 and presented in Table B-12, Table C-6 and Figure C-6.

4.13 Conclusion The Radiological Environmental Monitoring Program is conducted each year to determine the radiological impact of Indian Point operations on the environment. The preceding discussions of the results of the 2020 REMP reveal that operations at the station did not result in an impact on the environment.

The 2020 REMP results demonstrate the relative contributions of different radionuclide sources, both natural and anthropogenic, to the environmental concentrations. The results indicate that the fallout from previous atmospheric weapons testing continues to contribute to detection of Cs-137 in some environmental samples. There are infrequent detections of plant related activity in the environs; however, the radiological levels are very low and are significantly less than those from natural background and other anthropogenic sources.

Plant: Indian Point Energy Center I I Year: 2020 Page 36 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT SECTION 5.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

Plant: Indian Point Energy Center I Year: 2020 I Page 37 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 5.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

5.1 2020 Annual Radiological Environmental Monitoring Program Summary The results of the 2020 radiological environmental sampling program are presented in Tables B-2 through B-17. Table B-2 is a summary table of the sample results for 2020.

The format of this summary table conforms to the reporting requirements of the ODCM, NRC Regulatory Guide 4.8, and NRC Branch Technical Position to Regulatory Guide 4.8 (Reference 4). In addition, the data obtained from the analysis of samples are provided in Tables B-3 through B-17.

REMP samples were analyzed by various counting methods as appropriate. The methods are; gross beta, gamma spectroscopy analysis, liquid scintillation, radiochemical analysis, and TLD processing. Gamma spectroscopy analysis was performed for gamma emitting nuclides, including the following: Be-7, K-40, Mn-54, Co-58, Co-60, Fe-59, Zn-65, Zr-95, Nb-95, Ru-103, Ru-106, 1-131, Cs-134, Cs-137, Ba/La-140, Ce-141, Ce-144, Ra-226 and Ac/Th-228. Radiochemical analyses were performed for H-3, Ni-63, Sr-90 and 1-131 for specific media and locations as required in the ODCM.

5.2 Land Use Census In accordance with Sections IP2-D3.5.2 and IP3-2.8 of the ODCM, a land use census was conducted to identify the nearest milch animal and the nearest residence. The results of the milch animal and land use census are presented in Tables B-18 and B-19, respectively. In lieu of identifying and sampling the nearest garden of greater than 50 m2 , at least three kinds of broad leaf vegetation were sampled near the site boundary in two sectors and at a designated control location (results are presented in Table B-12).

5.3 Sampling Deviations During 2020, environmental sampling was performed for 10 unique media types addressed in the ODCM and for direct radiation. A total of 1183 samples of 1187 scheduled were obtained. Of the scheduled samples, 99.6% were collected and analyzed for the program. Sampling deviations are summarized in Table B-1.

Discussions of the reasons for the deviations are provided in Table B-1 a for the air samples, Table B-1b for other media, and Table B-1c for changes to the REMP program. Analytical deviations noted in Table B-6 and B-7 due to insufficient sample volumes as noted in Table B-1a.

5.4 Analytical Deviations No analytical deviations were found in 2020.

5.5 Special Reports No special reports were required under the REMP.

Plant: Indian Point Energy Center I Year: 2020 I Page 38 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-1 Summary of Sampling Deviations - 2020 MEDIA TLD 164 1 99% 163 See Table B-1b PARTICULATES IN AIR 428 0 100% 461 N/A CHARCOAL FILTER 428 0 100% 428 N/A PRECIPITATION N/A N/A N/A N/A See Table 8-1 b DRINKING WATER 24 0 100% 56 N/A GROUNDWATER 2 1 50% 4 See Table B-1b SAMPLES SOIL 3 0 100% 3 NIA BROAD LEAF VEGETATION 45 0 100% 45 N/A HUDSON RIVER WATER 34 0 100% 46 N/A SHORELINE SOIL 10 0 100% 20 N/A HUDSON RIVER BOTTOM 8 0 100% 8 N/A SEDIMENT AQUATIC VEGETATION 6 2 67% 4 See Table 8-1 b FISH & INVERTEBRATES 35 0 100% 105 N/A TOTALS 1187 4 99.6% 1343

• TOTAL NUMBER OF SAMPLES COLLECTED = 1183

• Samples not collected or unable to be analyzed.

• • Several sample types require more than one analysis

Plant: Indian Point Energy Center I Year: 2020 l Page 39 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-1a 2020 Air Sampling Deviations Air sampler lost 136 hours0.00157 days <br />0.0378 hours <br />2.248677e-4 weeks <br />5.1748e-5 months <br /> of run time due to a power outage from 95 Met Tower 8/10/2020 Tropical Storm Isaias. CR-IP3-2020-01928 (also see CR-IP3-2020-01849 & 01857)

Air sampler lost 172 hours0.00199 days <br />0.0478 hours <br />2.843915e-4 weeks <br />6.5446e-5 months <br /> of run time due to a power outage from 95 Met Tower 811712020 Tropical Storm Isaias. CR-IP3-2020-02004 Air sampler lost 169 hours0.00196 days <br />0.0469 hours <br />2.794312e-4 weeks <br />6.43045e-5 months <br /> of run time due to a tripped GFCI. CR-04 Algonquin 813112020 IP3-2020-02140 Air sampler lost 94 hours0.00109 days <br />0.0261 hours <br />1.554233e-4 weeks <br />3.5767e-5 months <br /> of run time due to a defective GFCI. CR-04 Algonquin 9/9/2020 IP3-2020-02272 Air sampler lost 95.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> of run time due to a defective GFCI. CR-23 Roseton 1113012020 IP3-2020-03054 Air sampler lost 28 hours3.240741e-4 days <br />0.00778 hours <br />4.62963e-5 weeks <br />1.0654e-5 months <br /> of run time due to a defective GFCI &

23 Roseton 121712020 Hour-meter. CR-IP3-2020-03125 TABLE B-1b 2020 Other Media Deviations Sample line and bucket found frozen due to no power. Grab 09 Hudson River Intake 112212020 sample was collected. CR-IP2-2020-00323.

Sample was not able to be obtained due to loss of power.

09 Hudson River Intake 311012020 Grab sample was collected. CR-IP2-2020-00836 09 Hudson River Intake 1212312020 Sample was not able to be obtained due to loss of power.

Grab sample was collected. IP2-2020-02093 During collection of 4 Quarter REMP TLDs it was discovered 20 Cortlandt Yacht Club 1/13/2021 that the TLD was missing from the Cortlandt Yacht Club location. Technician searched the area but did not find it. TLD was replaced. CR-IP2-2021-00017

Plant: Indian Point Energy Center I Year: 2020 I Page 40 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-1c 2020 Changes to the REMP Program This media is not required by the ODCM and not listed in NUREG Precipitation - IPEC #44 1301. Routine sampling/analysis was not very useful. Therefore, it 1/1/2020 and # 23 - discontinued was decided to eliminate it.

Location # 44 has been subject to some vandalism and ownership of the property is of concern. Therefore, it was decided that location Airborne - IPEC #44

1. 108 would be an appropriate replacement. Both these locations Peekskill replaced by 4/6/2020 are extra locations, not required per the ODCM. Concurrent IPEC #108 Telecom sampling for several weeks (3/30/20- 6/22/20) was performed at Building these locations.

Hudson River Water -

Plant Inlet water samples can be affected by the IPEC liquid IPEC #9 (Wa1) Plant discharges. The ODCM was revised (Rev. 5) with a location that Inlet (Hudson River 10/30/2020 better meets the criteria for a Control Location. Ten months of Intake) replaced by concurrent sampling was performed for these locations.

Roseton The ODCM was revised (Rev. 5) to delete this location.

Groundwater - IPEC Groundwater flow from IPEC has been verified to not be towards this location. IPEC maintains a detailed on-site Groundwater

1. 106 (GW) - 10/30/2020 Monitoring Program which continues to verify the groundwater discontinued plume direction. Results of this onsite program are listed in the annual Radioactive Effluent Release Re ort.

Plant: Indian Point Energy Center I Year: 2020 I Page 41 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-2 RADIOLOGICIAL ENVIRONMENT MONITORING PROGRAM

SUMMARY

INDIAN POINT ENERGY CENTER - 2020 Dockets50-003, 50-247 & 50-286 Medium or Indicator Control Pathway Analysis Total LLD* Locations Location with Highest Mean Locations Non-Routine Sampled Type Number Mean** Location I Distance Mean** Mean** Reported (Units) (Range) Number Direction I (Range) (Range) Measurements Direct Radiation TLD-Quarterly 163 14.0 (159/159) DR-31 4.65 Mi. 16.3 (4/4) 15.4 (4/4) 0 (mR/Standard Quarter) (10.5/17.0) NW (15.2/17.0) (14.7/16.2)

Air Particulate Gr-B 428 0.01 .013 (374/376) 108 0.36 Mi. .013 (39/39) .013 (52/52) 0 3

(pCi/m ) (.005/.032) ESE (.006/.031) (.006/.028)

Air Iodine GAMMA 3

(pCi/m ) 1-131 428 0.07 <LLD <LLD 0 Air Particulate GAMMA 33 (10-3 pCi/m3 ) Be-7 NA 112.5 (29/29) 4 0.28 Mi. 119(4/4) 104.8 (4/4) 0 (81.6/163.8) SW (90.2/163.8) (85.1/121.8)

K-40 NA <LLD <LLD 0 Cs-134 0.05 <LLD <LLD 0 Cs-137 0.06 <LLD <LLD 0 Th-228 NA <LLD <LLD 0 Rainwater* H-3 0 200 NA NA 0 (pCi/L)

GAMMA 0 Co-60 15 NA NA 0 Cs-134 15 NA NA 0 Cs-137 18 NA NA 0

• Rainwater collection was discontinued in 2019.

Drinking Water Gr-B 24 4 3.09 (15/24) 07 3.4 Mi. 3.35 (5/12) NA 0 (pCi/L) (2.14/4.07) NE (2.97/4.07)

H-3 8 200 <LLD NA 0 GAMMA 24 Mn-54 15 <LLD NA 0 Co-58 15 <LLD NA 0 Fe-59 30 <LLD NA 0

Plant: Indian Point Energy Center I Year: 2020 I Page 42 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-2 RADIOLOGICIAL ENVIRONMENT MONITORING PROGRAM

SUMMARY

INDIAN POINT ENERGY CENTER - 2020 Dockets50-003, 50-247 & 50-286 Medium or Indicator Control Pathway Analysis I

Total LLD* Locations Location with Highest Mean Locations Non-Routine Sampled Type Number Mean**

I Location Distance Mean** Mean** Reported (Units) (Range) Number Direction (Range) (Range) Measurements Drinking Water (cont'd) Co-60 15 <LLD NA 0 (pCi/L)

Zn-65 30 <LLD NA 0 Nb-95 15 <LLD NA 0 Zr-95 30 <LLD NA 0 1-131 15 <LLD NA 0 Cs-134 15 <LLD NA 0 Cs-137 18 <LLD NA 0 Ba-140 60 <LLD NA 0 La-140 15 <LLD NA 0 Groundwater H-3 200 <LLD NA 0 (pCi/L)

Ni-63 30 <LLD NA 0 Sr-90 <LLD NA 0 GAMMA Mn-54 15 <LLD NA 0 CO-58 15 <LLD NA 0 Fe-59 30 <LLD NA 0 Co-60 15 <LLD NA 0 Zn-65 30 <LLD NA 0 Nb-95 15 <LLD NA 0

Plant: Indian Point Energy Center I Year: 2020 I Page 43 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERA TING REPORT TABLE B-2 RADIOLOGICIAL ENVIRONMENT MONITORING PROGRAM

SUMMARY

INDIAN POINT ENERGY CENTER - 2020 Dockets50-003, 50-247 & 50-286 Medium or Indicator Control I

Pathway Analysis Total LLD* Locations Location with Highest Mean Locations Non-Routine I

Sampled Type Number Mean** Location Distance Mean** Mean** Reported (Units) (Range) Number Direction (Range) (Range) Measurements Groundwater (cont'd) Zr-95 30 <LLD NA 0 (pCi/L) 1-131 15 <LLD NA 0 Cs-134 15 <LLD NA 0 Cs-137 18 <LLD NA 0 Ba-140 60 <LLD NA 0 La-140 15 <LLD NA 0 Soil GAMMA 3 (pCi/kg dry) Be-7 NA <LLD <LLD 0 K-40 NA 11231 (2/2) 23 20.7 Mi. 15520 (1/1) 15520 (1/1) 0 (9632112830) N Co-60 NA <LLD <LLD 0 Cs-134 150 <LLD <LLD 0 Cs-137 180 106.8 (112) 94 0.39 Mi. 106.8 (111) <LLD 0 s

Ra-226 NA <LLD 23 20.7 Mi. 2632 (111) 2632 (111) 0 N

Th-228 NA 538.1 (212) 23 20.7Mi. 930.7 (111) 930.7 (111) 0 (508.1/568.1) N Broad leaf Vegetation GAMMA 45 (pCi/kg wet) Be-7 NA 1758.3 (27130) 94 0.39 Mi. 1901.7 (13115) 1102.7 (14115) 0 (508.3/2948) s (1079/2948) (443.4/1936)

K-40 NA 5131.8 (30/30) 95 0.46 Mi. 5250.7 (15115) 4288.8 (15115) 0 (1762/8846) SSW (2597/8177) (2073/6550)

Co-60 NA <LLD <LLD 0 1-131 60 <LLD <LLD 0 Cs-134 60 <LLD <LLD 0

Plant: Indian Point Energy Center I Year: 2020 I Page 44 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-2 RADIOLOGICIAL ENVIRONMENT MONITORING PROGRAM

SUMMARY

INDIAN POINT ENERGY CENTER - 2020 Dockets50-003, 50-247 & 50-286 Medium or Indicator Control Pathway Analysis Total I

LLD* Locations Location with Highest Mean Locations Non-Routine Sampled I

Type Number Mean** Location Distance Mean** Mean** Reported (Units) (Range) Number Direction (Range) (Range) Measurements 8roadleaf Vegetation (cont'd) Cs-137 80 <LLD <LLD 0 (pCi/kgwet)

Th-228 NA <LLD <LLD 0 River Water H-3 12 200 288 (2/4) 10 0.3 Mi. 288 (2/4) <LLD 0 (pCi/L) (229/347) WSW (229/347)

GAMMA 34 Mn-54 15 <LLD <LLD 0 Co-58 15 <LLD <LLD 0 Fe-59 30 <LLD <LLD 0 Co-60 15 <LLD <LLD 0 Zn-65 30 <LLD <LLD 0 Nb-95 15 <LLD <LLD 0 Zr-95 30 <LLD <LLD 0 Cs-134 15 <LLD <LLD 0 1-131 15 <LLD <LLD 0 Cs-137 18 <LLD <LLD 0 Ba-140 60 <LLD <LLD 0 La-140 15 <LLD <LLD 0 Th-228 NA <LLD <LLD 0 Bottom Sediment GAMMA 8 (pCi/kg dry) K-40 NA 16288.3 (6/6) 84 10.88 Mi. 20445 (2/2) 20445 (2/2) 0 (13420/19800) N (19850/21040) (19850/21040)

Co-60 NA <LLD <LLD 0

Plant: Indian Point Energy Center I Year: 2020 I Page 45 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-2 RADIOLOGICIAL ENVIRONMENT MONITORING PROGRAM

SUMMARY

INDIAN POINT ENERGY CENTER - 2020 Dockets50-003, 50-247 & 50-286 Medium or Indicator Control I

Pathway Analysis Total LLD* Locations Location with Highest Mean Locations Non-Routine I

Sampled Type Number Mean** Location Distance Mean** Mean** Reported (Units) (Range) Number Direction (Range) (Range) Measurements Bottom Sediment (cont'd) Cs-134 150 <LLD <LLD 0 (pCi/kg dry)

Cs-137 180 167 (5/6) 84 10.88 Mi. 206.9 (1/2) 206.9 (1/2) 0 (85.5/210.7) N Ra-226 NA <LLD <LLD 0 Th-228 NA 729.6 (6/6) 84 10.88 Mi. 1196 (2/2) 1196 (2/2) 0 (330.3/1184) N (1098/1294) (1098/1294)

Shoreline Soil Sr-90 10 5000 <LLD <LLD 0 (pCi/kg dry)

GAMMA 10 K-40 NA 11397 (6/6) 84 10.88Mi. 30555 (2/2) 21448 (4/4) 0 (8787/15530) N (29000/32110) (11650/32110)

Cs-134 150 <LLD <LLD 0 Cs-137 180 96.5 (1/6) 17 1.5Mi. 96.5 (1/2) <LLD 0 SSW Ra-226 NA <LLD 50 4.48 Mi. 3306 (1/2) 3306 (1/4) 0 NNW Ac-228 NA 511.8 (2/6) 84 10.88 Mi. 607.8 (1/2) 597.8 (2/4) 0 (498.9-524.6) N (587.8/607.8)

Th-228 NA 317.2 (5/6) 84 10.88 Mi. 665.3 (2/2) 620.3 (4/4) 0 (171.2/431.2) N (582.8/747.7) (520.6/747.7)

Aquatic Vegetation GAMMA 4 (pCi/kg wet) Be-7 NA 561.4 (1/3) 17 1.5Mi. 561.4 (1/2) <LLD 0 SSW K-40 NA 2737. 7 (3/3) 84 10.88 Mi. 3234 (1/1) 3234 (1/1) 0 (2405/3167) N Co-60 NA <LLD NA 0 1-131 60 <LLD NA 0 Cs-134 60 <LLD NA 0 Cs-137 80 <LLD NA 0 Ra-226 NA <LLD NA 0 Ac-228 NA <LLD <LLD 0

Plant: Indian Point Energy Center I Year: 2020 I Page 46 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-2 RADIOLOGICIAL ENVIRONMENT MONITORING PROGRAM

SUMMARY

INDIAN POINT ENERGY CENTER - 2020 Dockets50-003, 50-247 & 50-286 Medium or Indicator Control Pathway I

Analysis Total LLD* Locations Location with Highest Mean Locations Non-Routine I

Sampled Type Number Mean""* Location Distance Mean** Mean** Reported (Units) (Range) Number Direction (Range) (Range) Measurements

\

Aquatic Vegetation (cont'd) Th-228 NA 143.1 (1/2) 17 1.5Mi. 143.1 (1/2) <LLD (pCi/kg wet) SSW 0 Fish Ni-63 35 100 <LLD <LLD 0 (pCi/kg wet)

Sr-90 35 5 <LLD <LLD 0 GAMMA 35 K-40 NA 2484 (22/22) 23 20.7Mi. 2577 (13/13) 2577 (13/13) 0 (1568/3322) N (1366/3464) (1366/3464)

Mn-54 130 <LLD <LLD 0 Co-58 130 <LLD <LLD 0 Fe-59 260 <LLD <LLD 0 Co-60 130 <LLD <LLD 0 Zn-65 260 <LLD <LLD 0 Cs-134 130 <LLD <LLD 0 Cs-137 150 <LLD <LLD 0 Th-228 NA <LLD <LLD 0 Environment Samples 1183 Analysis 1343

• LLD IS THE LOWER LIMIT OF DETECTION

• • THE MEAN VALUES ARE CALCULATED USING THE POSITIVE VALUES

Plant: Indian Point Energy Center I Year: 2020 I Page 47 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-3

-DIRECT RADIATION, QUARTERLY DATA-2020 mR/Quarter +/- 1 sigma Sample Station First Quarter Second Quarter Third Quarter Fourth Quarter Annual Annual Nuclide Number 01/01-03/31 04/01-06/30 07/01-09/30 10/01-01/01 Average Total TLD DR-01 14.5 +/- 0.7 14.7 +/- 0.9 16.6 +/- 0.9 15.8 +/- 1.2 15.4 +/- 1.0 61.6 DR-02 14.1 +/- 0.8 15.0 +/- 0.7 15.5 +/- 0.9 14.4 +/- 0.8 14.7 +/- 0.6 59.0 DR-03 12.7 +/- 0.8 12.2 +/- 0.7 13.2 +/- 0.8 12.8 +/- 0.8 12.7 +/- 0.4 50.9 DR-04 13.0 +/- 0.6 13.2 +/- 0.5 14.4 +/- 0.8 13.0 +/- 0.9 13.4 +/- 0.7 53.7 DR-05 13.1 +/- 0.6 13.8 +/- 0.7 14.6 +/- 0.9 13.7 +/- 0.9 13.8 +/- 0.6 55.3 DR-06 13.9 +/- 0.7 14.2 +/- 0.5 15.5 +/- 1.2 14.0 +/- 1.0 14.4 +/- 0.7 57.6 DR-07 15.7 +/- 0.7 15.7 +/- 0.7 16.9 +/- 1.4 15.0 +/- 0.9 15.8 +/- 0.8 63.3 DR-08 12.0 +/- 0.6 12.7 +/- 0.9 12.7 +/- 0.6 12.1 +/- 0.7 12.4 +/- 0.4 49.5 DR-09 13.5 +/- 0.7 13.9 +/- 0.6 14.4 +/- 0.9 13.8 +/- 0.9 13.9 +/- 0.4 55.7 DR-10 13.7 +/- 0.7 14.1 +/- 0.8 14.2 +/- 0.6 13.4 +/- 0.8 13.8 +/- 0.4 55.4 DR-11 10.5 +/- 0.8 10.8 +/- 0.6 11.3 +/- 0.6 11.0 +/- 0.7 10.9 +/- 0.4 43.7 DR-12 14.8 +/- 0.8 16.1 +/- 1.0 15.9 +/- 0.8 15.4 +/- 0.8 15.6 +/- 0.6 62.2 DR-13 15.8 +/- 0.7 16.2 +/- ci.5 16.3 +/- 0.7 15.7 +/- 1.1 16.0 +/- 0.3 64.0 DR-14 12.1 +/- 0.7 13.5 +/- 0.8 13.2 +/- 0.9 13.0 +/- 0.7 13.0 +/- 0.6 51,8 DR-15 11.9 +/- 0.6 13.6 +/- 0.8 13.1 +/- 0.6 13.5 +/- 0.7 13.0 +/- 0.8 52.1 DR-16 13.9 +/- 0.8 15.0 +/- 1.0 15.1 +/- 1.0 14.8 +/- 0.8 14.7 +/- 0.6 58.7 DR-17 13.1 +/- 0.9 14.7 +/- 0.8 14.5 +/- 1.0 14.7 +/- 1.2 14.2 +/- 0.7 56.9 DR-18 14.0 +/- 0.6 14.5 +/- 0.5 15.5 +/- 0.7 14.3 +/- 0.9 14.6 +/- 0.6 58.2 DR-19 14.3 +/- 0.7 15.1 +/- 0.9 15.5 +/- 0.6 14.3 +/- 0.9 14.8 +/- 0.6 59.3 DR-20 13.8 +/- 0.6 14.2 +/- 0.7 15.0 +/- 0.9 13.7 +/- 0.8 14.2 +/- 0.6 56.6 DR-21 14.0 +/- 0.7 14.6 +/- 0.8 15.4 +/- 0.9 13.9 +/- 0.7 14.5 +/- 0.7 57.9 DR-22 10.9 +/- 0.8 11.7 +/- 0.4 11.8 +/- 0.5 10.9 +/- 0.6 11.3 +/- 0.5 45.3 DR-23 13.8 +/- 0.6 14.6 +/- 0.5 14.6 +/- 0.7 13.7 +/- 0.7 14.2 +/- 0.5 56.8 DR-24 13.9 +/- 0.7 15.4 +/- 0.7 15.3 +/- 0.8 14.4 +/- 1.0 14.8 +/- 0.7 59.1 DR-25 10.8 +/- 0.7 12.7 +/- 0.6 12.3 +/- 0.7 12.0 +/- 0.8 11.9 +/- 0.8 47.8 DR-26 12.5 +/- 0.7 14.7 +/- 0.5 13.8 +/- 0.6 13.6 +/- 0.9 13.7 +/- 0.9 54.6 DR-27 12.4 +/- 0.7 13.8 +/- 0.8 13.7 +/- 0.8 13.7 +/- 0.9 13.4 +/- 0.7 53.6 DR-28 14.6 +/- 1.1 16.4 +/- 1.0 16.0 +/- 0.8 15.2 +/- 0.8 15.5 +/- 0.8 62.2 DR-29 12.9 +/- 0.9 14.7 +/- 0.7 14.6 +/- 0.6 14.3 +/- 1.2 14.1 +/- 0.8 56.4 DR-30 13.2 +/- 0.5 14.6 +/- 0.9 14.7 +/- 0.8 14.2 +/- 0.8 14.1 +/- 0.7 56.5 DR-31 15.2 +/- 0.6 16.8 +/- 0.8 17.0 +/- 0.8 16.4 +/- 0.8 16.3 +/- 0.8 65.3 DR-32 15.1 +/- 0.9 15.9 +/- 1.0 16.2 +/- 0.7 16.2 +/- 1.2 15.8 +/- 0.5 63.3 DR-33 12.9 +/- 0.6 13.7 +/- 0.8 14.3 +/- 0.9 12.9 +/- 0.9 13.5 +/- 0.7 53.8 DR-34 12.6 +/- 0.6 13.8 +/- 0.5 13.7 +/- 0.7 13.0 +/- 0.8 13.3 +/- 0.6 53.2 DR-35 12.8 +/- 0.7 13.7 +/- 0.8 14.1 +/- 0.6 13.3 +/- 0.8 13.5 +/- 0.5 53.9 DR-36 13.8 +/- 0.6 14.7 +/- 1.0 14.9 +/- 0.8 14.2 +/- 0.7 14.4 +/- 0.5 57.6 DR-37 13.2 +/- 0.6 14.1 +/- 0.5 15.4 +/- 0.6 13.1 +/- 0.9 14.0 +/- 1.1 55.8 DR-38 12.0 +/- 0.5 13.3 +/- 0.7 13.2 +/- 0.6 (a) 12.8 +/- 0.7 38.5 DR-39 14.1 +/- 0.6 15.1 +/- 0.7 15.5 +/- 0.8 14.5 +/- 0.8 14.8 +/- 0.6 59.3 DR-40* 14.7 +/- 0.8 15.5 +/- 0.7 16.2 +/- 0.8 15.1 +/- 0.8 15.4 +/- 0.6 61.5 DR-41 12.8 +/- 0.9 13.8 +/- 1.0 14.4 +/- 0.9 12.6 +/- 0.9 13.4 +/- 0.9 53.6 AVERAGE 13.3 + 1.2 14.3 + 1.2 14.6 + 1.3 13.9 + 1.2 14.0 +/- 1.2 55.7 (Indicator Locations)

• Control location (a) Refer deviation table B-1b

Plant: Indian Point Energy Center I Year: 2020 I Page 48 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-4 DIRECT RADIATION, 2011 THROUGH 2020 DATA mR per Year Station Mean Standard Deviation Minimum Value Maximum Value 2020 Annual Number (2011-2019) (2011-2019) (2011-2019) (2011-2019) Total DR-01 61.6 3.3 55.6 65.6 61.6 DR-02 58.0 1.7 55.9 60.4 59.0 DR-03 46.3 4.8 35.0 50.8 50.9 DR-04 53.2 1.0 52.1 54.8 53.7 DR-05 54.7 1.6 53.3 58.2 55.3 DR-06 56.0 1.3 54.7 58.0 57.6 DR-07 62.5 1.4 60.7 64.6 63.3 DR-08 47.1 1.4 45.1 48.9 49.5 DR-09 53.0 2.0 50.0 55.8 55.7 DR-10 57.0 4.7 53.0 67.7 55.4 DR-11 43.2 1.1 41.4 44.6 43.7 DR-12 60.4 4.5 49.2 64.8 62.2 DR-13 64.9 1.9 62.3 67.6 64.0 DR-14 52.2 1.3 50.5 54.0 51.8 DR-15 52.2 1.3 50.3 53.8 52.1 DR-16 57.4 1.6 55.1 59.3 58.7 DR-17 57.8 1.7 55.6 60.1 56.9 DR-18 56.2 1.2 54.4 57.8 58.2 DR-19 58.3 1.5 55.9 60.4 59.3 DR-20 55.4 1.2 53.4 57.5 56.6 DR-21 54.8 2.3 51.9 58.4 57.9 DR-22 45.0 1.7 42.6 47.7 45.3 DR-23 55.5 1.3 53.6 57.4 56.8 DR-24 58.2 1.6 55.8 60.2 59.1 DR-25 48.5 1.5 45.7 50.5 47.8 DR-26 55.3 1.4 53.0 57.4 54.6 DR-27 54.1 1.7 51.5 56.5 53.6 DR-28 71.2 11.2 51.3 80.6 62.2 DR-29 56.3 1.2 54.8 58.3 56.4 DR-30 57.6 2.1 54.7 61.9 56.5 DR-31 64.8 1.9 61.5 67.4 65.3 DR-32 53.8 4.1 48.7 63.3 63.3 DR-33 53.8 1.2 52.3 55.6 53.8 DR-34 52.4 1.8 50.2 55.0 53.2 DR-35 52.6 2.7 49.9 56.3 53.9 DR-36 57.9 1.5 55.9 60.2 57.6 DR-37 54.7 1.2 53.3 56.8 55.8 DR-38 48.7 1.6 46.6 50.9 38.5 DR-39 57.9 2.0 54.8 60.9 59.3 DR-40* 57.8 4.3 49.3 62.4 61.5 DR-41 51.8 1.6 49.7 53.9 53.6 AVERAGE 55.3 55.8 (Indicator Locations)

• Control location

Plant: Indian Point Energy Center I Year: 2020 I Page 49 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-5 DIRECT RADIATION, INNER AND OUTER RINGS - 2020 (mR per Year)

Inner Ring Outer Ring Sector Inner Ring Outer Ring ID ID Annual Total Annual Total DR-01 DR-17 N 61.59 56.91 DR-02 DR-18 NNE 58.96 58.24 DR-03 DR-19 NE 50.89 59.26 DR-04 DR-20 ENE 53.69 56.61 DR-05 DR-21 E 55.26 57.93 DR-06 DR-22 ESE 57.63 45.33 DR-07 DR-23 SE 63.25 56.77 DR-08 DR-24 SSE 49.45 59.12 DR-09 DR-25 s 55.66 47.77 DR-10 DR-26 SSW 55.35 54.64 DR-11 DR-27 SW 43.66 53.57 DR-12 DR-28 WSW 62.20 62.17 DR-13 DR-29 w 64.03 56.35 DR-14 DR-30 WNW 51.80 56.53 DR-15 DR-31 NW 52.11 65.27 DR-16 DR-32 NNW 58.72 63.34 Average 55.89 56.86

Plant: Indian Point Energy Center Year:2020 Page 50 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-6 GROSS BETA ACTIVITY IN AIRBORNE PARTICULATE SAMPLES - 2020 3

pCi/m +/- 2 Sigma PERIOD Algonquin NYUTower Roseton Croton Point Grassy Point Gas Holder Bldg. Training Building Met Tower Telcom Bldg.

ENDING 4 5 23* 27 29 44 94 95 108 01/06/20 0.007 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 0.008 +/- 0.002 0.008 +/- 0.002 0.009 +/- 0.002 0.008 +/- 0.002 0.008 +/- 0.002 (b) 01/14/20 0.010 +/- 0.002 0.012 +/- 0.002 0.011 +/- 0.002 0.009 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 0.010 +/- 0.002 0.012 +/- 0.002 (b) 01/22/20 0.015 +/- 0.002 0.013 +/- 0.002 0.014 +/- 0.002 0.014 +/- 0.002 0.016 +/- 0.002 0.014 +/- 0.002 0.014 +/- 0.002 0. 15 +/- 0.002 (b) 01/28/20 0.010 +/- 0.002 0.012 +/- 0.003 0.013 +/- 0.003 0.011 +/- 0.002 0. 15 +/- 0.003 0.013 +/- 0.002 0.011 +/- 0.002 0.014 +/- 0.003 (b) 02/03120 0.010 +/- 0.002 0.009 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 0.008 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 (b) 02110120 0.010 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 0.012 +/- 0.002 0.012 +/- 0.002 0.012 +/- 0.002 0.009 +/- 0.002 0.011 +/- 0.002 (b) 02/18120 0.012 +/- 0.002 0. 15 +/- 0.002 0.011 +/- 0.002 0.014 +/- 0.002 0.012 +/- 0.002 0.014 +/- 0.002 0.014 +/- 0.002 0.012 +/- 0.002 (b) 02/24120 0.019 +/- 0.003 0.018 +/- 0.003 0.019 +/- 0.003 0. 18 +/- 0.003 0. 18 +/- 0.003 0. 16 +/- 0.003 0.017 +/- 0.003 0. 15 +/- 0.003 (b) 03/02/20 0.016 +/- 0.003 0. 15 +/- 0.003 0.017 +/- 0.003 0. 15 +/- 0.003 0.014 +/- 0.003 0. 18 +/- 0.003 0. 15 +/- 0.002 0.012 +/- 0.002 (b) 03/09/20 0.013 +/- 0.002 0.013 +/- 0.002 0.012 +/- 0.002 0.014 +/- 0.002 0.011 +/- 0.002 0. 15 +/- 0.003 0.013 +/- 0.002 0.012 +/- 0.002 (b) 03116/20 0.010 +/- 0.002 0.013 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 0.013 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 (b) 03124120 0. 10 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 0.011 +/- 0.002 0.009 +/- 0.002 0.011 +/- 0.002 (b) 03130120 0.008 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 0.008 +/- 0.002 0.007 +/- 0.002 0.007 +/- 0.002 0.007 +/- 0.002 0.009 +/- 0.002 (b) 04106120 0.006 +/- 0.002 0.006 +/- 0.002 0.007 +/- 0.002 0.006 +/- 0.002 0.006 +/- 0.002 0.005 +/- 0.002 0.007 +/- 0.002 0.006 +/- 0.002 0.006 +/- 0.002 04114120 0.014 +/- 0.002 0.013 +/- 0.002 0.013 +/- 0.002 0.014 +/- 0.003 0.014 +/- 0.002 0.013 +/- 0.002 0.016 +/- 0.002 0.013 +/- 0.002 0.013 +/- 0.002 04/20/20 0.013 +/- 0.003 0.010 +/- 0.003 0.011 +/- 0.002 0.013 +/- 0.003 0.012 +/- 0.002 0.011 +/- 0.002 0. 12 +/- 0.003 0.011 +/- 0.002 0.008 +/- 0.002 04127/20 0.011 +/- 0.002 0.011 +/- 0.002 0.013 +/- 0.002 0.013 +/- 0.003 0.011 +/- 0.002 0.011 +/- 0.002 0.014 +/- 0.002 0.014 +/- 0.003 0.010 +/- 0.002 05104/20 0.009 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 0. 10 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 0.009 +/- 0.002 0.010 +/- 0.002 05/11120 0.008 +/- 0.002 0.009 +/- 0.002 0.010 +/- 0.002 0. 10 +/- 0.002 0.009 +/- 0.002 0.011 +/- 0.002 0.008 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 05118/20 0.011 +/- 0.003 0.012 +/- 0.002 0.011 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 0.013 +/- 0.002 05127120 0.008 +/- 0.002 0.007 +/- 0.002 0.007 +/- 0.002 0.007 +/- 0.002 0.007 +/- 0.002 0.008 +/- 0.002 0.008 +/- 0.002 0.008 +/- 0.002 0.009 +/- 0.002 06/02120 0.007 +/- 0.002 0.008 +/- 0.002 0.006 +/- 0.002 0.008 +/- 0.002 0.008 +/- 0.002 0.006 +/- 0.002 0.008 +/- 0.002 0.008 +/- 0.002 0.009 +/- 0.002 06/08/20 0.016 +/- 0.003 0.014 +/- 0.003 0.016 +/- 0.003 0.014 +/- 0.003 0.015 +/- 0.002 0.014 +/- 0.002 0.014 +/- 0.003 0.014 +/- 0.003 0.013 +/- 0.003 06115120 0.010 +/- 0.002 0.010 +/- 0.002 0.009 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 0.010 +/- 0.002 0.009 +/- 0.002 06122/20 0.010 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 0.008 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 06/29/20 0.016 +/- 0.002 0.014 +/- 0.002 0. 15 +/- 0.003 0.016 +/- 0.003 0.016 +/- 0.003 (b) 0. 15 +/- 0.003 0.016 +/- 0.003 0.017 +/- 0.003

• Control Location (a) Refer deviation table B-1 b (b) Refer deviation table B-1 c

Plant: Indian Point Energy Center Year: 2020 Page 51 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-6 GROSS BETA ACTIVITY IN AIRBORNE PARTICULATE SAMPLES - 2020 3

pCi/m +/- 2 Sigma PERIOD Algonquin NYUTower Roseton Croton Point Grassy Point Gas Holder Bldg. Training Building Met Tower Telcom Bldg.

ENDING 4 5 23* 27 29 44 94 95 108 07/06/20 0.013 +/- 0.002 0.012 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 (b) 0.012 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 07/13/20 0.010 +/- 0.002 0.011 +/- 0.002 0.009 +/- 0.002 0.012 +/- 0.002 0.011 +/- 0.002 (b) 0.011 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 07/20/20 0.014 +/- 0.002 0.013 +/- 0.002 0.014 +/- 0.003 O.D18 +/- 0.003 0.016 +/- 0.003 (b) 0.014 +/- 0.003 0.013 +/- 0.002 0.014 +/- 0.003 07/27/20 0.017 +/- 0.002 0.015 +/- 0.002 0.017 +/- 0.003 0.019 +/- 0.003 0.018 +/- 0.003 (b) 0.016 +/- 0.002 0.019 +/- 0.003 0.018 +/- 0.003 08/03/20 0.017 +/- 0.002 0.017 +/- 0.002 0.016 +/- 0.002 0.019 +/- 0.003 0.007 +/- 0.002 (b) 0.017 +/- 0.002 0.019 +/- 0.003 0.017 +/- 0.003 08/10/20 0.016 +/- 0.002 0.015 +/- 0.002 O.D15 +/- 0.002 O.D18 +/- 0.003 0.015 +/- 0.002 (b) 0.014 +/- 0.002 0.015 +/- 0.008 (a) 0.016 +/- 0.002 08/17/20 0.020 +/- 0.003 0.023 +/- 0.003 0.020 +/- 0.003 0.020 +/- 0.003 0.022 +/- 0.003 (b) 0.022 +/- 0.003 < 1.070 (a) 0.018 +/- 0.003 08/24/20 0.019 +/- 0.003 0.016 +/- 0.002 0.015 +/- 0.002 0.016 +/- 0.002 0.017 +/- 0.003 (b) 0.018 +/- 0.003 0.019 +/- 0.003 0.017 +/- 0.003 08/31/20 < 0.114 (a) 0.013 +/- 0.002 0.011 +/- 0.002 0.012 +/- 0.002 0.017 +/- 0.003 (b) O.D16 +/- 0.002 0.013 +/- 0.002 0.014 +/- 0.003 09/09/20 0.017 +/- 0.003 (a) 0.012 +/- 0.002 0.011 +/- 0.002 0.013 +/- 0.002 0.014 +/- 0.002 (b) 0.013 +/- 0.002 0.013 +/- 0.002 0.013 +/- 0.002 09/14/20 0.009 +/- 0.002 0.008 +/- 0.002 0.012 +/- 0.002 0.011 +/- 0.003 0.012 +/- 0.002 (b) 0.010 +/- 0.002 0.011 +/- 0.003 0.01 o +/- 0.002 09/22/20 0.011 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 (b) 0.010 +/- 0.002 0.014 +/- 0.002 0.012 +/- 0.002 09/28/20 0.032 +/- 0.004 0.032 +/- 0.004 0.028 +/- 0.003 0.027 +/- 0.003 0.031 +/- 0.003 (b) 0.028 +/- 0.003 0.030 +/- 0.004 0.031 +/- 0.003 10/05/20 0.008 +/- 0.002 0.011 +/- 0.002 0.009 +/- 0.002 0.010 +/- 0.002 0.009 +/- 0.002 (b) 0.011 +/- 0.002 0.010 +/- 0.002 0.010 +/- 0.002 10/13/20 0.018 +/- 0.002 O.D15 +/- 0.002 0.016 +/- 0.002 0.015 +/- 0.002 0.016 +/- 0.002 (b) 0.017 +/- 0.002 0.014 +/- 0.002 0.016 +/- 0.002 10/19/20 0.011 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 (b) 0.012 +/- 0.002 0.012 +/- 0.002 0.009 +/- 0.002 10/26/20 0.011 +/- 0.002 0.014 +/- 0.002 0.013 +/- 0.002 0.011 +/- 0.002 0.013 +/- 0.002 (b) 0.010 +/- 0.002 0.012 +/- 0.002 0.011 +/- 0.002 11/02/20 0.01 o +/- 0.002 0.011 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 0.009 +/- 0.002 (b) 0.010 +/- 0.002 0.013 +/- 0.002 0.012 +/- 0.002 11/09/20 0.027 +/- 0.003 0.024 +/- 0.003 0.027 +/- 0.003 0.026 +/- 0.003 0.024 +/- 0.003 (b) 0.027 +/- 0.003 0.025 +/- 0.003 0.024 +/- 0.003 11/16/20 0.017 +/- 0.003 0.016 +/- 0.003 0.014 +/- 0.002 0.015 +/- 0.002 0.018 +/- 0.003 (b) 0.017 +/- 0.002 O.D18 +/- 0.003 0.015 +/- 0.002 11/23/20 0.015 +/- 0.002 0.017 +/- 0.003 0.015 +/- 0.002 0.016 +/- 0.002 0.017 +/- 0.002 (b) 0.013 +/- 0.002 0.016 +/- 0.003 0.015 +/- 0.003 11/30/20 0.017 +/- 0.002 0.016 +/- 0.002 0.020 +/- 0.004 (a) 0.016 +/- 0.002 0.018 +/- 0.003 (b) O.D18 +/- 0.003 0.016 +/- 0.002 0.016 +/- 0.002 12/07/20 0.009 +/- 0.002 0.009 +/- 0.002 0.010 +/- 0.002 (a) 0.008 +/- 0.002 0.010 +/- 0.002 (b) 0.009 +/- 0.002 0.009 +/- 0.002 0.008 +/- 0.002 12/14/20 0.018 +/- 0.003 0.019 +/- 0.003 0.017 +/- 0.002 0.017 +/- 0.002 0.018 +/- 0.003 (b) 0.016 +/- 0.002 0.018 +/- 0.003 0.019 +/- 0.003 12/22/20 0.009 +/- 0.002 0.011 +/- 0.002 0.009 +/- 0.002 0.009 +/- 0.002 0.012 +/- 0.002 (b) 0.009 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 12/29/20 0.012 +/- 0.002 0.011 +/- 0.002 0.010 +/- 0.002 0.011 +/- 0.002 0.011 +/- 0.002 (b) 0.009 +/- 0.002 0.010 +/- 0.002 0.015 +/- 0.002 (a) Refer deviation table B-1 b

• Control Location (b) Refer deviation table B-1c

Plant: Indian Point Energy Center Year: 2020 I Page 52 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-7 IODINE-131 ACTIVITY IN AIRBORNE CHARCOAL SAMPLES - 2020 3

pCi/m +/- 2 Sigma PERIOD Algonquin NYU Tower Roseton Croton Point Grassy Point Gas Holder Bldg. Training Building Met Tower Telcom Bldg.

ENDING 4 5 23' 27 29 44 94 95 108 01/06/20 < 0.033 < 0.033 < 0.Q15 < 0.014 < 0.017 < 0.017 < 0.033 < 0.031 (b) 01/14/20 < 0.023 < 0.023 < 0.018 < 0.023 < 0.018 < 0.018 < 0.022 < 0.013 (b) 01/22/20 < 0.013 < 0.015 < 0.014 < 0.013 < 0.014 < 0.014 < 0.D15 < 0.013 (b) 01/28/20 < 0.024 < 0.026 < 0.031 < 0.023 < 0.035 < 0.033 < 0.027 < 0.032 (b) 02/03/20 < 0.016 < 0.016 < 0.016 < 0.016 < 0.008 < 0.016 < 0.016 < 0.018 (b) 02/10/20 < 0.018 < 0.018 < 0.018 < 0.019 < 0.018 < 0.Q18 < 0.Q18 < 0.018 (b) 02/18/20 < 0.030 < 0.029 < 0.012 < 0.030 < 0.012 < 0.012 < 0.029 < 0.012 (b) 02/24/20 < 0.021 < 0.020 < 0.022 < 0.022 < 0.022 < 0.022 < 0.011 < 0.022 (b) 03/02/20 < 0.019 < 0.018 < 0.021 < 0.019 < 0.022 < 0.022 < 0.018 < 0.022 (b) 03/09/20 < 0.031 < 0.030 < 0.016 < 0.032 < 0.016 < 0.017 < 0.030 < 0.016 (b) 03/16/20 < 0.020 < 0.019 < 0.030 < 0.021 < 0.012 < 0.031 < 0.013 < 0.031 (b) 03/24/20 < 0.033 < 0.031 < 0.025 < 0.033 < 0.021 < 0.017 < 0.030 < 0.020 (b) 03/30/20 < 0.024 < 0.022 < 0.026 < 0.024 < 0.021 < 0.026 < 0.023 < 0.027 (b) 04/06/20 < 0.031 < 0.029 < 0.030 < 0.031 < 0.030 < 0.032 < 0.030 < 0.030 < 0.024 04/14/20 < 0.017 < 0.016 < 0.026 < 0.020 < 0.025 < 0.025 < 0.016 < 0.028 < 0.008 04/20/20 < 0.025 < 0.022 < 0.019 < 0.021 < 0.018 < 0.Q18 < 0.023 < 0.021 < 0.012 04/27/20 < 0.027 < 0.024 < 0.009 < 0.026 < 0.013 < 0.012 < 0.023 < 0.014 < 0.012 05/04/20 < 0.033 < 0.031 < 0.019 < 0.031 < 0.021 < 0.020 < 0.028 < 0.020 < 0.011 05/11/20 < 0.025 < 0.022 < 0.022 < 0.024 < 0.021 < 0.023 < 0.021 < 0.021 < 0.014 05/18/20 < 0.028 < 0.024 < 0.032 < 0.025 < 0.013 < 0.033 < 0.023 < 0.036 < 0.013 05/27/20 < 0.044 < 0.043 < 0.018 < 0.037 < 0.017 < 0.016 < 0.035 < 0.015 < 0.014 06/02/20 < 0.044 < 0.046 < 0.035 < 0.039 < 0.033 < 0.013 < 0.037 < 0.031 < 0.031 06/08/20 < 0.036 < 0.038 < 0.Q15 < 0.030 < 0.014 < 0.013 < 0.029 < 0.016 < 0.016 06/15/20 < 0.025 < 0.028 < 0.012 < 0.028 < 0.012 < 0.006 < 0.026 < 0.012 < 0.011 06/22/20 < 0.021 < 0.019 < 0.013 < 0.023 < 0.012 < 0.011 < 0.022 < 0.012 < 0.018 06/29/20 < 0.039 < 0.036 < 0.028 < 0.045 < 0.026 (b) < 0.042 < 0.026 < 0.026

• Control Location (a) Refer deviation table B-1 b (b) Refer deviation table B-1c

Plant: Indian Point Energy Center Year: 2020 I Page 53 of 128 Annual Radiological En_vironmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-7 IODINE-131 ACTIVITY IN AIRBORNE CHARCOAL SAMPLES - 2020 pCi/m 3 +/- 2 Sigma PERIOD Algonquin NYU Tower Rosston Croton Point Grassy Point Gas Holder Bldg. Training Building Met Tower Telcom Bldg.

ENDING 4 5 23* 27 29 44 94 95 108 07/06120 < 0.018 < 0.016 < 0. 15 < 0.018 < 0.015 (b) < 0.018 < 0.015 < 0.015 07/13120 < 0.030 < 0.012 < 0.031 < 0.031 < 0.029 (b) < 0.031 < 0.031 < 0.031 07/20/20 < 0.022 < 0.021 < 0.038 < 0.025 < 0.015 (b) < 0.024 < 0.036 < 0.037 07/27/20 < 0.024 < 0.022 < 0.032 < 0.027 < 0.031 (b) < 0.024 < 0.032 < 0.032 08/03/20 < 0.026 < 0.025 < 0.019 < 0.027 < 0.027 (b) < 0.026 < 0.020 < 0.020 08/10/20 < 0.036 < 0.014 < 0.035 < 0.035 < 0.036 (b) < 0.034 < 0.069 (a) < 0.039 08/17/20 < 0.019 < 0.018 < 0.022 < 0.020 < 0.023 (b) < 0.019 < 5.007 (a) < 0.023 08/24120 < 0.038 < 0.035 < 0.018 < 0.038 < 0.018 (b) < 0.038 < 0.012 < 0.019 08/31120 < 0.434 (a) < 0.014 < 0.010 < 0.016 < 0.022 (b) < 0.015 < 0.022 < 0.023 09109120 < 0.056 (a) < 0.029 < 0.024 < 0.030 < 0.024 (b) < 0.030 < 0.021 < 0.025 09/14120 < 0.021 < 0.020 < 0. 10 < 0.022 < 0.011 (b) < 0.020 < 0.012 < 0.011 09122120 < 0.034 < 0.030 < 0.039 < 0.033 < 0.040 (b) < 0.032 < 0.034 < 0.041 09128120 < 0.020 < 0.018 < 0.019 < 0.020 < 0.019 (b) < 0.019 < 0.022 < 0.020 10105120 < 0.022 < 0.020 < 0.016 < 0.022 < 0. 16 (b) < 0.021 < 0.016 < 0.018 10/13120 < 0.025 < 0.023 < 0.023 < 0.024 < 0.024 (b) < 0.024 < 0.024 < 0.025 10/19120 < 0.017 < 0.014 < 0.009 < 0.016 < 0.010 (b) < 0.016 < 0.010 < 0.010 10126120 < 0.016 < 0.015 < 0.023 < 0.016 < 0.024 (b) < 0. 16 < 0.024 < 0.025 11102120 < 0.029 < 0.031 < 0.021 < 0.028 < 0.022 (b) < 0.028 < 0.023 < 0.024 11109120 < 0.021 < 0.023 < 0.010 < 0.020 < 0.010 (b) < 0.020 < 0.010 < 0.011 11116120 < 0.018 < 0.019 < 0.026 < 0.018 < 0.027 (b) < 0.009 < 0.019 < 0.029 11123120 < 0.029 < 0.031 < 0.011 < 0.028 < 0.024 (b) < 0.028 < 0.026 < 0.026 11130120 < 0.024 < 0.023 < 0.022 (a) < 0.022 < 0.020 (b) < 0.024 < 0.022 < 0.022 12107/20 < 0.024 < 0.023 < 0.024 (a) < 0.010 < 0.021 (b) < 0.024 < 0.022 < 0.022 12114/20 < 0.017 < 0.017 < 0.016 < 0.007 < 0.017 (b) < 0.017 < 0.018 < 0.018 12122120 < 0.035 < 0.035 < 0.025 < 0.032 < 0.026 (b) < 0.034 < 0.024 < 0.029 12129120 < 0.028 < 0.029 < 0.024 < 0.027 < 0.025 (b) < 0.026 < 0.025 < 0.028

• Control Location (a) Refer deviation table B-1b (b) Refer deviation table B-1c

Plant: Indian Point Energy Center Year: 2020 Page 54 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-8 GAMMA EMITTERS IN AIRBORNE PARTICULATE SAMPLES - 2020 10-3 pCi/m 3 +/- 2 Sigma Algonquin NYU Tower 4 5 DATE 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Be-7 92 +/- 22 130 +/- 26 164 +/- 29 90 +/- 17 109 +/- 23 115 +/- 23 101 +/- 23 84 +/- 19 K-40 < 24 < 16 < 23 < 11 < 25 < 21 < 18 < 18 Mn-54 < 1 < 1 <1 <1 <2 < 1 < 1 < 1 Co-58 <2 <2 <1 <2 <4 <2 <2 <2 Fe-59 <5 < 5 < 10 <5 <8 <5 <4 <5 Co-60 <2 < 1 <1 <1 < 2 < 1 < 1 <1 Zn-65 <4 < 3 <5 < 3 <4 <4 <3 <2 Nb-95 <2 <2 <3 <2 <3 <2 <2 <2 Zr-95 <4 < 3 <4 <3 <4 <3 <4 <4 Ru-103 <3 < 3 <4 <2 < 5 <3 <3 <2 Ru-106 < 10 < 11 <8 <9 < 19 <7 <7 < 9 1-131 < 192 < 174 < 696 < 136 < 211 < 202 < 531 < 149 Cs-134 < 1 < 1 <2 < 1 <2 < 1 < 1 < 1 Cs-137 < 1 < 1 <1 < 1 <2 < 1 < 1 < 1 Ba-140 < 112 < 80 < 221 < 90 < 127 < 82 < 179 < 79 La-140 < 36 < 41 < 113 < 28 < 45 < 38 < 96 < 29 Ce-141 <4 <4 <6 <3 <5 <4 <4 <3 Ce-144 <5 < 5 <5 <4 < 8 <5 <4 <4 Ra-226 < 20 < 21 < 21 < 14 < 27 < 19 < 13 < 16 Ac-228 <5 < 5 <5 <4 <7 <3 <4 < 3 Th-228 <2 <2 <2 < 1 <2 <2 < 1 < 1

Plant: Indian Point Energy Center Year: 2020 Page 55 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-8 GAMMA EMITTERS IN AIRBORNE PARTICULATE SAMPLES- 2020 3

10- pCi/m 3 +/- 2 Sigma Roseton Croton Point 23* 27 DATE 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Be-7 85 +/- 19 112 +/- 24 122 +/- 24 101 +/- 18 106 +/- 20 127 +/- 21 120 +/- 25 100 +/- 21 K-40 < 24 < 12 < 16 < 17 < 13 < 11 < 13 < 18 Mn-54 <2 < 1 < 1 < 1 < 1 < 1 < 1 < 1 Co-58 <2 <2 <2 <2 < 1 <2 < 1 <2 Fe-59 <6 < 6 < 6 <6 < 5 <5 < 9 <6 Co-60 < 1 <2 < 1 <1 < 1 <1 < 1 < 1 Zn-65 <4 < 3 <2 <3 <2 <3 <3 < 4 Nb-95 <2 <2 <2 <2 <2 <2 <2 < 2 Zr-95 <4 <4 < 3 <3 <3 <4 <3 < 4 Ru-103 < 3 <3 < 3 <2 <2 <3 <3 <3 Ru-106 < 12 < 9 < 11 < 11 < 10 < 10 < 9 < 11 1-131 < 178 < 241 < 492 < 151 < 157 < 143 < 541 < 195 Cs-134 < 1 <2 < 1 <1 < 1 < 1 < 1 < 1 Cs-137 < 1 < 1 < 1 <1 < 1 <1 < 1 < 1 Ba-140 < 97 < 117 < 165 < 92 < 53 < 84 < 168 < 93 La-140 < 33 < 21 < 89 < 45 < 38 < 55 < 99 < 35 Ce-141 <5 <7 <4 <3 <2 <3 < 5 <4 Ce-144 <6 < 11 < 4 <4 <4 <4 <4 <6 Ra-226 < 21 < 31 < 12 < 15 < 15 < 16 < 15 < 18 Ae-228 <5 <4 <4 <4 <5 <3 <5 <4 Th-228 <2 < 3 <1 < 1 <2 <2 <2 <2

• Control Location

Plant: Indian Point Energy Center Year: 2020 Page 56 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-8 GAMMA EMITTERS IN AIRBORNE PARTICULATE SAMPLES - 2020 3 3 10- pCi/m +/- 2 Sigma Grassy Point Gas Holder Bldg.

29 44 DATE 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Be-7 95 +/- 18 137 +/- 21 132 +/- 23 92 +/- 21 102 +/- 20 134 +/- 31 (a) (a)

K-40 < 18 < 12 < 22 < 18 < 18 < 15 Mn-54 < 1 < 1 <1 < 1 <1 < 1 Co-58 <2 < 1 <2 < 1 < 2 <2 Fe-59 <4 < 5 <7 <5 < 4 <7 Co-60 < 1 < 1 < 1 < 1 < 1 < 1 Zn-65 <2 <2 < 3 <3 < 1 < 5 Nb-95 <2 <2 <2 <2 <2 <2 Zr-95 <2 < 3 <4 < 3 <3 <3 Ru-103 <2 <2 <3 <2 <3 <4 Ru-106 < 10 <9 <9 <5 < 8 < 11 1-131 < 127 < 150 < 711 < 155 < 129 < 330 Cs-134 < 1 < 1 < 1 <1 < 1 <2 Cs-137 <1 < 1 <1 <1 < 1 < 1 Ba-140 < 69 < 84 < 178 < 68 < 62 < 133 La-140 < 38 < 33 < 111 < 24 < 37 < 53 Ce-141 <3 <3 <5 <2 <3 < 5 Ce-144 <4 <5 <5 <4 <4 <6 Ra-226 < 15 < 17 < 18 < 15 < 14 < 23 Ac-228 <3 <3 <4 <3 <3 <5 Th-228 < 1 < 1 <1 < 1 < 1 < 2 (a) Refer deviation table B-1c

Plant: Indian Point Energy Center Year: 2020 Page 57 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-8 GAMMA EMITTERS IN AIRBORNE PARTICULATE SAMPLES - 2020 3

10- pCi/m 3 +/- 2 Sigma Training Building Met Tower 94 95 DATE 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Be-7 89 +/- 25 138 +/- 28 133 +/- 28 93 +/- 22 93 +/- 22 129 +/- 34 120 +/- 27 82 +/- 19 K-40 < 21 < 24 < 28 < 22 < 20 < 26 < 23 < 22 Mn-54 < 2 <1 <2 <2 < 1 <2 <1 < 1 Co-58 < 3 <2 <3 <3 < 1 < 3 <3 <2 Fe-59 < 6 <4 < 12 <8 <4 < 9 <7 <7 Co-60 <2 <2 <2 <2 < 1 < 2 <2 < 1 Zn-65 < 5 <4 < 5 <5 <2 <4 <5 <5 Nb-95 < 3 <3 <3 <2 <2 < 3 <2 <2 Zr-95 <6 <4 <6 <6 <4 <7 <5 <3 Ru-103 <4 < 3 <5 <4 <2 <4 <4 <3 Ru-106 < 17 < 12 < 18 < 13 < 9 < 15 < 12 < 15 1-131 < 255 < 241 < 925 < 292 < 128 < 324 < 705 < 180 Cs-134 <2 <1 <2 <2 < 1 < 3 < 1 < 1 Cs-137 <2 <1 <2 < 1 < 1 <2 < 1 < 1 Ba-140 < 155 < 114 < 257 < 140 < 73 < 162 < 190 < 123 La-140 < 57 < 50 < 116 < 50 < 35 < 72 < 93 < 46 Ce-141 < 5 <5 <8 <5 < 3 < 6 <6 < 5 Ce-144 <7 <6 < 7 <6 <4 < 7 < 5 <6 Ra-226 < 28 < 21 < 25 < 27 < 16 < 28 < 17 < 21 Ac-228 < 8 <5 <6 <6 <4 < 7 <5 <5 Th-228 < 3 <2 <2 <2 < 1 < 2 <2 <2

Plant: Indian Point Energy Center Year: 2020 Page 58 of 128 -

Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-8 GAMMA EMITTERS IN AIRBORNE PARTICULATE SAMPLES - 2020 10~ pCi/m 0 +/- 2 Sigma Telecomm Bldg 108 DATE 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Be-7 (a) 115 +/- 21 144 +/- 30 97 +/- 28 K-40 < 18 < 29 < 33 Mn-54 < 1 <2 <2 Co-58 < 1 <4 <3 Fe-59 <5 < 11 < 9 Co-60 < 1 <2 <2 Zn-65 <3 <3 <5 Nb-95 <2 <4 <3 Zr-95 <3 <6 <4 Ru-103 <2 <7 <4 Ru-106 < 10 < 19 < 21 1-131 < 136 < 1001 < 320 Cs-134 < 1 <2 <2 Cs-137 < 1 <2 < 1 Ba-140 < 66 < 279 < 165 La-140 < 37 < 116 < 52 Ce-141 <3 <8 <6 Ce-144 <4 <9 < 8 Ra-226 < 16 < 32 < 27 Ac-228 <3 <8 <7 Th-228 < 1 <3 < 3 (a) Refer deviation table B-1c

Plant: Indian Point Energy Center I Year: 2020 I Page 59 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-9 RADIONUCLIDES IN DRINKING WATER SAMPLES -2020 pCi/L +/- 2 Sigma Camp Field 7

DATE 01/14/20 02/12/20 03/17/20 04/15/20 5/12/2020 06/08/20 RADIOCHEMICAL Gr-B < 2 4 +/-2 < 3 < 2 3 +/-2 3 +/-1 H-3 (a) < 193 < 186 GAMMA Be-7 < 57 < 34 < 74 < 49 < 57 < 66 K-40 < 127 < 83 < 138 < 113 < 148 < 130 Mn-54 < 7 < 5 < 6 < 7 <5 < 7 Co-58 < 6 < 5 < 7 < 6 < 5 < 7 Fe-59 < 13 < 11 < 12 < 13 < 12 < 13 Co-60 < 7 < 5 < 7 < 7 < 7 < 7 Zn-65 < 15 < 10 < 12 < 15 < 14 < 14 Nb-95 < 7 < 5 < 7 < 8 < 7 < 7 Zr-95 < 11 < 10 < 14 < 11 < 9 < 11 Ru-103 < 8 < 6 < 8 < 6 < 6 < 8 Ru-106 < 59 < 42 < 58 < 61 < 67 < 66 1-131 < 9 < 8 < 7 < 8 < 7 < 9 Cs-134 < 8 < 5 < 9 < 7 < 7 < 11 Cs-137 < 9 < 6 < 7 < 7 < 7 < 7 Ba-140 < 25 < 22 < 24 < 24 < 26 < 27 La-140 < 11 < 9 < 11 < 8 < 6 < 8 Ce-141 < 11 < 9 < 11 < 12 < 10 < 11 Ce-144 < 39 < 38 < 50 < 51 < 44 < 53 Ra-226 < 174 < 134 < 175 < 187 < 187 < 181 Ac-228 < 23 < 18 < 37 < 28 < 22 < 30 Th-228 < 13 < 10 < 14 < 13 < 14 < 15 (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 60 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-9 RADIONUCLIDES IN DRINKING WATER SAMPLES - 2020 pCi/L +/- 2 Sigma Camp Field 7

DATE 07/14/20 08/11/20 09/02/20 10/06/20 11/04/20 12/07/20 RADIOCHEMICAL Gr-B < 2 < 2 3 +/-2 3 +/- 2 < 2 < 2 H-3 (a) < 179 < 194 GAMMA Be-7 < 64 < 61 < 57 < 50 < 53 < 58 K-40 < 146 < 145 < 132 < 100 < 125 < 137 Mn-54 < 7 < 6 < 5 < 7 < 6 < 6 Co-58 < 7 < 6 < 7 < 7 < 8 < 8 Fe-59 < 10 < 12 < 10 < 8 < 15 < 14 Co-60 < 5 < 9 < 6 < 6 < 9 < 7 Zn-65 < 12 < 12 < 12 < 15 < 15 < 13 Nb-95 < 7 < 8 < 6 < 8 < 7 < 8 Zr-95 < 13 < 10 < 8 < 13 < 7 < 13 Ru-103 < 6 < 8 < 8 < 6 < 6 < 6 Ru-106 < 64 < 63 < 54 < 49 < 66 < 66 1-131 < 9 < 8 < 8 < 9 < 8 < 10 Cs-134 < 7 < 8 < 8 < 7 < 7 < 7 Cs-137 < 7 < 7 < 9 < 7 < 8 < 8 Ba-140 < 25 < 23 < 25 < 21 < 25 < 27 La-140 < 9 < 7 < 6 < 8 < 10 < 9 Ce-141 < 11 < 11 < 11 < 8 < 10 < 10 Ce-144 < 51 < 48 < 52 < 45 < 42 < 50 Ra-226 < 174 < 160 < 179 < 167 < 168 < 176 Ac-228 < 22 < 25 < 28 < 31 < 29 < 35 Th-228 < 14 < 13 < 14 < 11 < 14 < 13 (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 61 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-9 RADIONUCLIDES IN DRINKING WATER SAMPLES - 2020 pCi/L +/- 2 Sigma Croton 8

DATE 01/14/20 02/12/20 03/17/20 04/15/20 05/12/20 06/08/20 RADIOCHEMICAL Gr-8 2 +/- 1 3 +/- 1 < 2 3 +/- 2 3 +/- 2 4 +/- 2 H-3 (a) < 190 < 185 GAMMA Be-7 < 49 < 53 < 46 < 52 < 66 < 59 K-40 < 37 < 95 < 158 < 126 < 152 < 94 Mn-54 < 5 < 5 < 7 < 6 < 6 < 7 Co-58 < 5 < 6 < 5 < 5 < 6 < 6 Fe-59 < 9 < 11 < 14 < 13 < 14 < 15 Co-60 < 5 < 7 < 8 < 7 < 9 < 7 Zn-65 < 10 < 13 < 14 < 14 < 11 < 13 Nb-95 < 5 < 6 < 7 < 6 < 8 < 7 Zr-95 < 10 < 8 < 13 < 13 < 14 < 13 Ru-103 < 5 < 6 < 7 < 6 < 8 < 6 Ru-106 < 43 < 76 < 69 < 54 < 62 < 69 1-131 < 6 < 10 < 8 < 7 < 9 < 9 Cs-134 < 6 < 7 < 6 <7 < 9 < 7 Cs-137 < 6 < 6 < 7 <7 < 9 < 6 Ba-140 < 19 < 27 < 29 < 25 < 30 < 22 La-140 < 7 < 11 < 8 < 6 < 11 < 12 Ce-141 < 8 < 9 < 10 < 10 < 13 < 10 Ce-144 < 37 < 35 < 48 < 43 < 52 < 47 Ra-226 < 141 < 137 < 169 < 144 < 190 < 155 Ac-228 < 24 < 23 < 27 < 24 < 32 < 33 Th-228 < 10 < 10 < 12 < 12 < 14 < 12 (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 62 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-9 RADIONUCLIDES IN DRINKING WATER SAMPLES - 2020 pCi/L +/- 2 Sigma Croton 8

DATE 07/14/20 08/11/20 09/02/20 10/06/20 11/04/20 12/07/20 RADIOCHEMICAL Gr-B 3 +/- 2 3 +/-2 3 +/- 1 3 +/-2 < 2 3 +/-2 H-3 (a) < 180 < 189 GAMMA Be-7 64 67 58 48 44 60 K-40 153 136 143 103 79 78 Mn-54 7 7 7 5 4 5 Co-58 7 7 6 4 5 6 Fe-59 14 16 12 9 9 11 Co-60 6 7 7 5 7 6 Zn-65 14 18 13 11 9 14 Nb-95 7 8 7 5 6 6 Zr-95 14 13 10 9 9 12 Ru-103 7 6 6 6 5 6 Ru-106 73 55 60 56 54 55 1-131 11 9 7 7 6 7 Cs-134 10 6 8 6 6 6 Cs-137 8 7 8 6 5 7 Ba-140 36 33 32 20 17 31 La-140 6 11 9 7 5 10 Ce-141 12 10 11 9 9 10 Ce-144 53 46 45 41 40 42 Ra-226 174 164 167 150 130 161 Ac-228 33 29 29 21 21 28 Th-228 15 14 14 11 10 10 (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 63 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-10 RADIONUCLIDES IN GROUNDWATER SAMPLES -2020 pCi/L +/- 2 Sigma Lafarge Monitoring Well 106 DATE 05/21/20 (a)

RADIOCHEMICAL H-3 < 180 Ni-63 < 19 Sr-90 < 1 GAMMA Be-7 < 70 K-40 < 61 Mn-54 < 8 Co-58 < 7 Fe-59 < 17 Co-60 < 9 Zn-65 < 15 Nb-95 < 9 Zr-95 < 12 Ru-103 < 9 Ru-106 < 73 Cs-134 < 9 Cs-137 < 8 Ba-140 < 33 La-140 < 12 Ce-141 < 12 Ce-144 < 51 Ac-228 < 32 (a) Refer deviation table B-1 b

Plant: Indian Point Energy Center I Year: 2020 I Page 64 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-11 GAMMA EMITTERS IN SOIL SAMPLES - 2020 pCi/kg dry +/- 2 Sigma Roseton Training Building Met Tower 23* 94 95 DATE 09/14/20 09/14/20 09/14/20 Be-7 < 657 < 447 < 607 K-40 15520 +/- 1877 9632 +/- 1552 12830 +/- 1540 Mn-54 < 88 < 64 < 72 Co-58 < 69 < 53 < 64 Fe-59 < 157 < 118 < 109 Co-60 < 71 < 61 < 48 Zn-65 < 181 < 136 < 186 Nb-95 < 82 < 66 < 80 Zr-95 < 171 < 118 < 123 Ru-103 < 79 < 51 < 66 Ru-106 < 712 < 535 < 642 1-131 < 104 < 72 < 91 Cs-134 < 109 < 73 < 90 Cs-137 < 85 107 +/- 64 < 77 Ba-140 < 321 < 244 < 257 La-140 < 104 < 70 < 101 Ce-141 < 114 < 67 < 99 Ce-144 < 465 < 273 < 363 Ra-226 2632 +/- 1698 < 1304 < 1621 Th-228 931 +/- 167 568 +/- 89 508 +/- 149

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 65 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TAB.LE B-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES - 2020 pCi/kg wet +/- 2 Sigma Roseton 23*

DATE 05/18/20 05/18/20 05/18/20 06/15/20 06/15/20 06/15/20 GAMMA Be-7 1936 +/- 314 1152 +/- 226 < 366 897 +/- 212 666 +/- 255 443 +/- 207 K-40 5843 +/- 616 4596 +/- 516 3615 +/- 664 6550 +/- 688 5290 +/- 668 5681 +/- 655 Mn-54 < 23 < 20 < 24 < 25 < 29 < 29 Co-58 < 28 < 17 < 23 < 22 < 27 < 25 Fe-59 < 59 < 46 < 71 < 52 < 50 < 68 Co-60 < 27 < 19 < 41 < 27 < 35 < 33 Zn-65 < 64 < 39 < 74 < 63 < 66 < 68 Nb-95 < 23 < 21 < 29 < 21 < 27 < 28 Zr-95 < 34 < 29 < 57 < 45 < 48 < 50 Ru-103 < 22 < 20 < 31 < 22 < 24 < 29 Ru-106 < 190 < 158 < 202 < 193 < 245 < 243 1-131 < 45 < 33 < 51 < 26 < 31 < 35 Cs-134 < 29 < 20 < 24 < 29 < 28 < 35 Cs-137 < 24 < 20 < 27 < 21 < 25 < 37 Ba-140 < 125 < 92 < 165 < 101 < 90 < 122 La-140 < 34 < 30 < 48 < 28 < 32 < 30 Ce-141 < 43 < 27 < 41 < 33 < 38 < 43 Ce-144 < 154 < 110 < 164 < 122 < 146 < 158 Ra-226 < 555 < 467 < 622 < 411 < 470 < 730 Th-228 < 42 < 31 < 43 < 35 < 43 < 49

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 66 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES -2020 pCi/kg wet +/- 2 Sigma Roseton 23*

DATE 07/20/20 07/20/20 07/20/20 08/17/20 08/17/20 08/17/20 GAMMA Be-7 904 +/- 332 765 +/- 226 1796 +/- 349 1078 +/- 209 910 +/- 189 997 +/- 253 K-40 4135 +/- 619 3128 +/- 503 4224 +/- 657 3306 +/- 426 4067 +/- 514 2073 +/- 398 Mn-54 < 25 < 24 < 31 < 20 < 20 < 28 Co-58 < 22 < 22 < 33 < 17 < 18 < 30 Fe-59 < 57 < 41 < 69 < 42 < 40 < 55 Co-60 < 24 < 14 < 22 < 18 < 27 < 23 Zn-65 < 57 < 49 < 55 < 35 < 57 < 55 Nb-95 < 29 < 20 < 28 < 19 < 23 < 33 Zr-95 < 44 < 34 < 53 < 36 < 36 < 47 Ru-103 < 21 < 21 < 33 < 22 < 20 < 30 Ru-106 < 228 < 236 < 242 < 191 < 200 < 245 1-131 < 37 < 26 < 24 < 27 < 26 < 33 Cs-134 < 28 < 24 < 24 < 22 < 22 < 31 Cs-137 < 30 < 27 < 33 < 21 < 21 < 30 Ba-140 < 102 < 79 < 121 < 84 < 84 < 105 La-140 <-29 < 28 < 39 < 25 < 22 < 31 Ce-141 < 46 < 32 < 45 < 32 < 29 < 44 Ce-144 < 175 < 140 < 180 < 128 < 118 < 196 Ra-226 < 727 < 548 < 710 < 487 < 474 < 664 Th-228 < 47 < 41 < 58 < 42 < 42 < 55

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 67 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES -2020 pCi/kg wet +/- 2 Sigma Roseton 23*

DATE 09/14/20 09/14/20 09/14/20 GAMMA Be-7 1726 +/- 379 1359 +/- 356 809 +/- 293 K-40 3238 +/- 632 2545 +/- 667 6041 +/- 811 Mn-54 < 25 < 27 < 28 Co-58 < 30 < 32 < 31 Fe-59 < 57 < 46 < 59 Co-60 < 37 < 22 < 36 Zn-65 < 66 < 53 < 65 Nb-95 < 30 < 30 < 28 Zr-95 < 51 < 48 < 39 Ru-103 < 27 < 27 < 30 Ru-106 < 262 < 269 < 286 1-131 < 35 < 38 < 33 Cs-134 < 27 < 38 < 39 Cs-137 < 30 < 22 < 34 Ba-140 < 113 < 121 < 99 La-140 < 35 < 42 < 22 Ce-141 < 41 < 45 < 39 Ce-144 < 167 < 163 < 170 Ra-226 < 660 < 618 < 727 Th-228 < 49 < 57 < 50

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 68 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES -2020 pCi/kg .wet +/- 2 Sigma Training Center 94 DATE 05/19/20 05/19/20 05/19/20 06/16/20 06/16/20 06/16/20 GAMMA Be-7. < 285 2344 +/- 198 1079 +/- 303 < 247 1121 +/- 285 1081 +/- 308 K-40 3394 +/- 642 6574 +/- 369 6450 +/- 743 3420 +/- 498 4659 +/- 617 8846 +/- 797 Mn-54 < 26 < 17 < 32 < 22 < 29 < 23 Co-58 < 29 < 15 < 27 < 22 < 24 < 23 Fe-59 < 64 < 34 < 66 < 59 < 54 < 61 Co-60 < 16 < 16 < 30 < 27 < 29 < 29 Zn-65 < 66 < 34 < 77 < 50 < 68 < 68 Nb-95 < 34 < 16 < 34 < 26 < 26 < 30 Zr-95 < 55 < 31 < 52 < 43 < 45 < 45 Ru-103 < 34 < 17 < 32 < 20 < 25 < 24 Ru-106 < 281 < 155 < 315 < 240 < 220 < 210 1-131 < 56 < 32 < 58 < 27 < 33 < 31 Cs-134 < 34 < 18 < 32 < 25 < 32 < 33 Cs-137 < 28 < 18 < 28 < 25 < 25 < 30 Ba-140 < 161 < 87 < 135 < 101 < 93 < 93 La-140 < 51 < 23 < 44 < 28 < 29 < 26 Ce-141 < 50 < 27 < 49 < 32 < 34 < 45 Ce-144 < 204 < 102 < 185 < 137 < 155 < 183 Ra-226 < 705 < 361 < 719 < 534 < 545 < 658 Th-228 < 53 < 31 < 57 < 43 < 51 < 59

Plant: Indian Point Energy Center I Year: 2020 I Page 69 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES - 2020 pCi/kg wet +/- 2 Sigma Training Center 94 DATE 07/21/20 07/21/20 07/21/20 08/18/20 08/18/20 08/18/20 GAMMA Be-7 2033 +/- 474 2543 +/- 350 1414 +/- 317 1501 +/- 288 2430 +/- 398 2199 +/- 451 K-40 4399 +/- 642 7587 +/- 784 6088 +/- 814 2080 +/- 467 6849 +/- 859 4591 +/- 795 Mn-54 < 32 < 36 < 30 < 26 < 38 < 31 Co-58 < 29 < 22 < 30 < 27 < 39 < 31 Fe-59 < 65 < 66 < 81 < 48 < 87 < 49 Co-60 < 32 < 31 < 27 < 28 < 44 < 32 Zn-65 < 60 < 67 < 94 < 51 < 70 < 67 Nb-95 < 33 < 29 < 36 < 31 < 40 < 33 Zr-95 < 44 < 42 < 68 < 32 < 61 < 59 Ru-103 < 27 < 29 < 32 < 26 < 32 < 33 Ru-106 < 286 < 262 < 297 < 231 < 349 < 333 1-131 < 39 < 33 < 36 < 37 < 41 < 25 Cs-134 < 40 < 27 < 41 < 28 < 38 < 37 Cs-137 < 27 < 33 < 34 < 30 < 34 < 35 Ba-140 < 102 < 122 < 111 < 102 < 113 < 108 La-140 < 39 < 20 < 23 < 31 < 36 * < 31 Ce-141 < 47 < 46 < 44 < 41 < 45 < 45 Ce-144 < 201 < 196 < 176 < 170 < 189 < 170 Ra-226 < 792 < 704 < 715 < 751 < 735 < 714 Th-228 < 58 < 53 < 56 < 57 < 62 < 58

Plant: Indian Point Energy Center I Year: 2020 I Page 70 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES -2020 pCi/kg wet +/- 2 Sigma Training Center 94 DATE 09/15/20 09/15/20 09/15/20 GAMMA Be-7 1502 +/- 384 2527 +/- 401 2948 +/- 364 K-40 2660 +/- 613 5836 +/- 776 1762 +/- 464 Mn-54 < 31 < 32 < 26 Co-58 < 33 < 32 < 32 Fe-59 < 58 < 56 < 55 Co-60 < 28 < 29 < 31 Zri-65 < 50 < 81 < 61 Nb-95 < 34 < 29 < 26 Zr-95 < 54 < 64 < 50 Ru-103 < 28 < 31 < 28 Ru-106 < 239 < 311 < 320 1-131 < 35 < 41 < 35 Cs-134 < 37 < 36 < 30 Cs-137 < 32 < 41 < 33 Ba-140 < 127 < 136 < 118 La-140 < 38 < 35 < 22 Ce-141 < 47 < 48 < 39 Ce-144 < 188 < 209 < 166 Ra-226 < 716 < 716 < 696 Th-228 < 65 < 76 < 59

Plant: Indian Point Energy Center I Year: 2020 I Page 71 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES -2020 pCi/kg wet +/- 2 Sigma Met Tower 95 DATE 05/19/20 05/19/20 05/19/20 06/16/20 06/16/20 06/16/20 GAMMA Be-7 1484 +/- 310 < 321 2582 +/- 407 954 +/- 265 1032 +/- 259 508 +/- 178 K-40 4795 +/- 622 2597 +/- 484 5986 +/- 749 8177 +/- 729 4615 +/- 788 4670 +/- 623 Mn-54 < 28 < 25 < 35 < 20 < 28 < 29 Co-58 < 29 < 30 < 33 < 24 < 29 < 25 Fe-59 < 60 < 48 < 62 < 56 < 68 < 55 Co-60 < 30 < 28 < 37 < 27 < 35 < 33 Zn-65 < 59 < 45 < 82 < 60 < 63 < 70 Nb-95 < 33 < 29 < 34 < 24 < 31 < 26 Zr-95 < 58 < 48 < 60 < 34 < 50 < 45 Ru-103 < 34 < 31 < 34 < 22 < 24 < 26 Ru-106 < 290 < 203 < 303 < 214 < 240 < 175 1-131 < 56 < 47 < 56 < 27 < 37 < 29 Cs-134 < 29 < 31 < 42 < 31 < 32 < 18 Cs-137 < 35 < 24 < 37 < 28 < 42 < 29 Ba-140 < 175 < 143 < 168 < 78 < 117 < 89 La-140 < 42 < 44 < 46 < 18 < 26 < 29 Ce-141 < 53 < 39 < 63 < 34 < 42 < 39 Ce-144 < 198 < 180 < 232 < 133 < 162 < 148 Ra-226 < 763 < 603 < 791 < 545 < 599 < 511 Th-228 < 63 < 50 < 69 < 46 < 44 < 41

Plant: Indian Point Energy Center I Year: 2020 I Page 72 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES -2020 pCi/kg wet +/- 2 Sigma Met Tower 95 DATE 07/21/20 07/21/20 07/22/20 08/18/20 08/18/20 08/18/20 GAMMA Be-7 1813 +/- 306 963 +/- 393 1986 +/- 399 2280 +/- 310 1639 +/- 313 2098 +/- 317 K-40 3846 +/- 583 6039 +/- 852 7085 +/- 847 6593 +/- 676 3690 +/- 676 5331 +/- 723 Mn-54 < 32 < 25 < 32 < 31 < 31 < 24 Co-58 < 26 < 36 < 44 < 27 < 27 < 34 Fe-59 < 61 < 68 < 84 < 72 < 64 < 54 Co-60 < 33 < 30 < 41 < 37 < 23 < 37 Zn-65 < 74 < 64 < 86 < 75 < 45 < 66 Nb-95 < 33 < 29 < 42 < 30 < 26 < 33 Zr-95 < 48 < 60 < 48 < 56 < 53 < 39 Ru-103 < 26 < 32 < 37 < 26 < 27 < 27 Ru-106 < 297 < 301 < 296 < 236 < 206 < 254 1-131 < 36 < 36 < 38 < 34 < 34 < 34 Cs-134 < 38 < 39 < 46 < 31 < 32 < 36 Cs-137 < 33 < 34 < 38 < 36 < 27 < 34 Ba-140 < 109 < 111 < 127 < 116 < 94 < 127 La-140 < 41 < 29 < 33 < 38 < 45 < 30 Ce-141 < 40 < 41 < 51 < 41 < 38 < 42 Ce-144 < 166 < 180 < 225 < 158 < 149 < 187 Ra-226 < 720 < 597 < 822 < 649 < 644 < 768 Th-228 < 54 < 56 < 71 < 54 < 54 < 62

Plant: Indian Point Energy Center I Year: 2020 I Page 73 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-12 GAMMA EMITTERS IN BROAD LEAF VEGETATION SAMPLES -2020 pCi/kg wet +/- 2 Sigmq Met Tower 95 DATE 09/15/20 09/15/20 09/15/20 GAMMA Be-7 2597 +/- 443 1328 +/- 328 1488 +/- 392 K-40 5946 +/- 842 5190 +/- 656 4200 +/- 703 Mn-54 < 37 < 31 < 30 Co-58 < 30 < 31 < 27 Fe-59 < 68 < 62 < 65 Co-60 < 34 < 28 < 25 Zn-65 < 71 < 73 < 80 Nb-95 < 32 < 23 < 38 Zr-95 < 52 < 40 < 59 Ru-103 < 32 < 26 < 29 Ru-106 < 278 < 226 < 323 1-131 < 28 < 31 < 40 Cs-134 < 26 < 34 < 37 Cs-137 < 38 < 28 < 23 Ba-140 < 122 < 107 < 113 La-140 < 32 < 29 < 34 Ce-141 < 51 < 40 < 47 Ce-144 < 200 < 157 < 215 Ra-226 < 777 < 650 < 818 Th-228 < 62 < 56 < 67

Plant: Indian Point Energy Center I Year: 2020 I Page 74 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-13 RADIONUCLIDES IN RIVER WATER SAMPLES -2020 pCi/L +/- 2 Sigma Plant Inlet Hudson River Intake 9 (b)

DATE 01/29/20 02/25/20 03/31/20 04/28/20 05/28/20 06/30/20 RADIOCHEMICAL H-3 (a) < 192 < 180 GAMMA K-40 < 31 < 14 < 31 < 55 < 25 47 +/- 23 Mn-54 < 1 < 1 <2 < 3 < 1 <2 Co-58 <2 <2 <2 <4 <2 <2 Fe-59 <4 <4 <4 < 8 <4 <4 Co-60 <2 < 1 <2 <4 <2 <2 Zn-65 <3 <3 <3 <6 <3 <3 Nb-95 <2 <2 <2 <4 <2 <2 Zr-95 <3 <3 <3 <6 <3 < 4 Ru-103 <2 <2 <2 <4 <2 <2 Ru-106 < 14 < 14 < 15 < 31 < 14 < 15 1-131 < 8 < 8 < 12 < 13 < 8 < 13 Cs-134 <2 <2 <2 < 3 <2 <2 Cs-137 <2 < 1 <2 < 4 <2 <2 Ba-140 < 15 < 14 < 19 < 27 < 15 < 20 La-140 <5 <5 <6 < 8 <5 <6 Ce-141 <4 <3 <4 <7 <4 <4 Ce-144 < 11 < 11 < 13 < 26 < 11 < 13 Ra-226 < 34 < 31 < 43 < 90 < 33 < 44 Ac-228 <6 < 5 <6 < 13 <6 <7 Th-228 <3 <3 <3 <7 <3 <4 (a) Quarterly Composite (b) Refer REMP changes table B-1c

Plant: Indian Point Energy Center I Year: 2020 I Page 75 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-13 RADIONUCLIDES IN RIVER WATER SAMPLES - 2020 pCi/L +/- 2 Sigma Plant Inlet Hudson River Intake 9

DATE 07/28/20 08/25/20 09/29/20 10/27/20 11/24/20 12/30/20 RADIOCHEMICAL H-3 (a) < 181 < 190 GAMMA K-40 59 +/- 31 51 +/- 27 51 +/- 27 < 19 41 +/- 27 < 19 Mn-54 <2 <2 <2 <2 <2 <2 Co-58 <2 <2 <2 < 2 <2 <2 Fe-59 <5 <4 <4 < 6 <4 <5 Co-60 <2 <2 <2 <3 <2 <2 Zn-65 <4 <4 <3 <4 <4 <4 Nb-95 <2 <2 <2 <3 <2 <2 Zr-95 <4 <3 <3 < 5 <4 <4 Ru-103 <3 <2 <2 < 3 <2 < 3 Ru-106 < 18 < 17 < 14 < 22 < 17 < 16 1-131 < 12 <7 <9 < 9 < 10 < 12 Cs-134 <2 <2 <2 < 3 <2 <2 Cs-137 <2 <2 <2 <2 <2 <2 Ba-140 < 21 < 13 < 15 < 20 < 17 < 21 La-140 <7 <5 <5 <6 <6 <7 Ce-141 <5 <3 <4 <5 <4 <4 Ce-144 < 14 < 11 < 12 < 17 < 12 < 12 Ra-226 < 46 < 41 < 42 < 63 < 40 < 35 Ac-228 <8 <8 <6 < 10 <7 <7 Th-228 <3 <3 <3 < 5 <3 <3 (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 76 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-13 RADIONUCLIDES IN RIVER WATER SAMPLES - 2020 pCi/L +/- 2 Sigma Discharge Canal 10 DATE 01/29/20 02/25/20 03/31/20 04/28/20 05/28/20 06/30/20 RADIOCHEMICAL H-3 (a) 347 +/- 135 < 176 GAMMA K-40 < 29 < 30 < 42 < 69 < 15 50 +/- 27 Mn-54 < 1 <2 <2 < 3 <2 <2 Co-58 <2 <2 <2 <4 <2 <2 Fe-59 <4 <5 <5 < 8 <4 <4 Co-60 <2 <2 <2 <4 <2 <2 Zn-65 <3 <3 <5 <8 <3 < 4 Nb-95 <2 <2 <3 <4 <2 <2 Zr-95 <3 <3 <5 <7 <3 <4 Ru-103 <2 <2 <3 <4 < 2 <2 Ru-106 < 14 < 16 < 21 < 26 < 16 < 16 1-131 <8 <8 < 13 < 14 < 9 < 12 Cs-134 <2 <2 <2 < 4 <2 <2 Cs-137 <2 <2 <2 <3 <2 <2 Ba-140 < 16 < 17 < 23 < 28 < 16 < 21 La-140 <5 <6 <8 < 9 <6 <6 Ce-141 <3 <4 <6 < 8 <4 <4 Ce-144 < 10 < 11 < 17 < 26 < 12 < 12 Ra-226 < 37 < 41 < 58 < 82 < 44 < 44 Ac-228 <6 <6 <9 < 14 <7 <7 Th-228 <3 < 3 <5 <7 <3 <3 (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 77 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-13 RADIONUCLIDES IN RIVER WATER SAMPLES - 2020 pCi/L +/- 2 Sigma Discharge Canal 10 DATE 07/28/20 08/25/20 09/29/20 10/27/20 11/24/20 12/30/20 RADIOCHEMICAL H-3 (a) < 177 229 +/- 125 GAMMA K-40 45 +/- 28 < 18 37 +/- 22 < 23 58 +/- 24 < 16 Mn-54 < 2 <2 < 1 < 3 <2 <2 Co-58 <2 <2 <2 < 3 <2 <2 Fe-59 < 5 < 5 <4 < 6 <4 <5 Co-60 <2 <2 <2 < 3 <2 <2 Zn-65 <4 <4 <3 <5 <3 <4 Nb-95 <2 <2 <2 < 3 <2 <2 Zr-95 <4 <3 <3 < 5 < 3 <3 Ru-103 <2 <2 <2 < 3 < 2 <2 Ru-106 < 16 < 16 < 14 < 24 < 16 < 15 1-131 < 11 <7 <8 < 9 < 9 < 12 Cs-134 <2 <2 <2 < 3 <2 <2 Cs-137 <2 <2 <2 < 3 <2 <2 Ba-140 < 18 < 15 < 15 < 20 < 17 < 20 La-140 < 6 <5 <5 < 7 <6 <7 Ce-141 <4 <4 <4 <6 <4 <5 Ce-144 < 11 < 11 < 12 < 18 < 11 < 13 Ra-226 < 41 < 41 < 33 < 69 < 40 < 43 Ac-228 <7 <7 <6 < 11 <6 <7 Th-228 <3 < 3 <3 < 5 < 3 <3 (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 78 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-13 RADIONUCLIDES IN RIVER WATER SAMPLES - 2020 pCi/L +/- 2 Sigma Roseton 23*

DATE 03/30/20 04/27/20 05/26/20 06/29/20 07/27/20 08/24/20 RADIOCHEMICAL H-3 (a) < 187 < 183 GAMMA K-40 < 50 < 40 < 37 < 25 < 25 < 26 Mn-54 <2 <3 <2 <2 <2 <2 Co-58 <3 <3 <2 <2 <2 <2 Fe-59 <6 <7 <4 <4 <4 <4 Co-60 < 3 <3 <2 <2 <2 <2 Zn-65 <5 <6 <3 <3 <3 < 3 Nb-95 <3 <3 <2 <2 <2 <2 Zr-95 <5 <6 <3 <3 < 3 <3 Ru-103 <3 <4 <2 <2 < 2 <2 Ru-106 < 24 < 25 < 15 < 13 < 13 < 14 1-131 < 11 < 11 < 10 < 13 < 10 <7 Cs-134 <3 <3 <2 <2 < 2 <2 Cs-137 <2 <3 <2 <2 < 2 <2 Ba-140 < 22 < 25 < 17 < 20 < 16 < 14 La-140 < 7 < 10 <5 <7 <6 <4 Ce-141 <6 <6 <4 <4 <4 <3 Ce-144 < 19 < 18 < 11 < 12 < 11 < 11 Ra-226 < 60 < 55 < 34 < 33 < 32 < 42 Ac-228 < 11 < 11 <7 <6 <6 <6 Th-228 <4 <5 <3 <3 <3 < 3

• Control Location (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 79 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-13 RADIONUCLIDES IN RIVER WATER SAMPLES -2020 pCi/L +/- 2 Sigma Roseton 23*

DATE 09/28/20 10/27/20 11/23/20 12/28/20 RADIOCHEMICAL H-3 (a) < 176 < 193 GAMMA K-40 < 37 < 28 < 32 < 14 Mn-54 <2 <2 <2 <2 Co-58 <2 <3 <2 < 2 Fe-59 <4 < 6 <4 <4 Co-60 <2 <3 <2 <2 Zn-65 <3 <5 <3 < 3 Nb-95 < 2 <3 <2 <2 Zr-95 < 3 <5 <3 < 3 Ru-103 <2 <3 <2 <2 Ru-106 < 14 < 21 < 15 < 12 1-131 <9 < 10 < 10 < 12 Cs-134 <2 <3 <2 <2 Cs-137 <2 <2 <2 <2 Ba-140 < 16 < 19 < 17 < 18 La-140 < 5 <7 <5 <7 Ce-141 <4 <5 <4 <4 Ce-144 < 12 < 15 < 13 < 11 Ra-226 < 43 < 55 < 44 < 33 Ac-228 <7 < 10 <7 < 6 Th-228 < 3 <4 <4 < 3

• Control Location (a) Quarterly Composite

Plant: Indian Point Energy Center I Year: 2020 I Page 80 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-14 GAMMA EMITTERS IN BOTTOM SEDIMENT SAMPLES - 2020 pCi/kg dry +/- 2 Sigma Discharge Canal Off Verplanck 10 17 DATE 06/12/20 09/21/20 06/12/20 09/21/20 GAMMA Be-7 < 521 < 488 < 777 < 834 K-40 15650 +/- 1597 13760 +/- 1484 16410 +/- 2114 18690 +/- 1956 Mn-54 < 61 < 45 < 92 < 94 Co-58 < 72 < 40 < 70 < 95 Fe-59 < 130 < 126 < 189 < 238 Co-60 < 66 < 51 < 119 < 108 Zn-65 < 152 < 113 < 218 < 242 Nb-95 < 56 < 44 < 105 < 117 Zr-95 < 92 < 92 < 152 < 187 Ru-103 < 51 < 45 < 90 < 97 Ru-106 < 583 < 442 < 743 < 843 1-131 < 80 < 77 < 122 < 176 Cs-134 < 72 < 57 < 113 < 120 Cs-137 154 +/- 53 86 +/- 46 198 +/- 93 211 +/- 100 Ba-140 < 270 < 247 < 459 < 511 Ce-141 < 74 < 65 < 116 < 137 Ce-144 < 309 < 241 < 465 < 498 Ra-226 < 1234 < 1008 < 1528 < 2129 Th-228 406 +/- 85 330 +/- 89 1184 +/- 137 929 +/- 137

Plant: Indian Point Energy Center Year: 2020 Page 81 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-14 GAMMA EMITTERS IN BOTTOM SEDIMENT SAMPLES - 2020 pCi/kg dry +/- 2 Sigrna Lent's Cove Cold Spring 28 84*

DATE 06/10/20 09/22/20 06/10/20 09/22/20 GAMMA Be-7 < 773 < 413 < 782 < 699 K-40 19800 +/- 2149 13420 +/- 1284 21040 +/- 2218 19850 +/- 2126 Mn-54 < 116 < 51 < 98 < 89 Co-58 < 96 < 41 < 73 < 79 Fe-59 < 220 < 100 < 273 < 191 Co-60 < 124 < 62 < 91 < 105 Zn-65 < 221 < 123 < 254 < 214 Nb-95 < 120 < 52 < 115 < 101 Zr-95 < 200 < 100 < 169 < 168 Ru-103 < 107 < 40 < 107 < 70 Ru-106 < 682 < 318 < 739 < 664 1-131 < 222 < 71 < 227 < 145 Cs-134 < 119 < 54 < 116 < 119 Cs-137 187 +/- 105 < 67 207 +/- 109 < 124 Ba-140 < 665 < 196 < 665 < 434 Ce-141 < 142 < 65 < 139 < 103 Ce-144 < 426 < 221 < 460 < 425 Ra-226 < 2012 < 787 < 2061 < 1797 Th-228 1141 +/- 174 388 +/- 83 1098 +/- 157 1294 +/- 140

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 82 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-15 RADIONUCLIDES IN SHORELINE SOIL SAMPLES - 2020 pCi/kg dry+/- 2 Sigma Off Verplanck Lent's Cove 17 28 DATE 06/10/20 09/10/20 06/10/20 09/10/20 RADIOCHEMICAL Sr-90 < 46 < 40 < 45 < 43 GAMMA Be-7 < 327 < 432 1091 +/- 498 < 694 K-40 10520 +/- 1033 15530 +/- 1610 11960 +/- 1314 12650 +/- 1619 Mn-54 < 37 < 51 < 50 < 73 Co-58 < 37 < 58 < 55 < 50 Fe-59 < 83 < 152 < 84 < 141 Co-60 < 37 < 72 < 36 < 68 Zn-65 < 71 < 140 < 117 < 161 Nb-95 < 42 < 71 < 48 < 71 Zr-95 < 67 < 124 < 67 < 139 Ru-103 < 36 < 56 < 51 < 64 Ru-106 < 311 < 398 < 477 < 512 1-131 < 68 < 93 < 104 < 123 Cs-134 < 49 < 70 < 60 < 81 Cs-137 96 +/- 57 < 57 < 60 < 81 Ba-140 < 174 < 273 < 190 < 364 La-140 < 35 < 89 < 44 < 111 Ce-141 < 74 < 80 < 112 < 89 Ce-144 < 299 < 281 < 402 < 316 Ra-226 < 1104 < 1148 < 1733 < 1132 Ac-228 499 +/- 130 < 406 < 392 525 +/- 179 Th-228 338 +/- 100 331 +/- 90 431 +/- 170 315 +/- 126

Plant: Indian Point Energy Center I Year: 2020 I Page 83 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-15 RADIONUCLIDES IN SHORELINE SOIL SAMPLES - 2020

. pCi/kg dry +/- 2 Sigma Manitou Inlet White Beach 50* 53 DATE 06/10/20 09/10/20 06/10/20 09/10/20 RADIOCHEMICAL Sr-90 < 34 < 44 < 47 < 43 GAMMA Be-7 < 476 < 575 < 462 < 337 K-40 11650 +/- 1272 13030 +/- 1486 8787 +/- 1110 8935 +/- 1195 Mn-54 < 56 < 71 < 53 < 42 Co-58 < 59 < 67 < 51 < 39 Fe-59 < 114 < 136 < 148 < 93 Co-60 < 40 < 76 < 52 < 30 Zn-65 < 126 < 145 < 132 < 97 Nb-95 < 68 < 82 < 63 < 43 Zr-95 < 91 < 138 < 96 < 81 Ru-103 < 53 < 64 < 53 < 43 Ru-106 < 514 < 571 < 527 < 307 1-131 < 103 < 126 < 104 < 75 Cs-134 < 70 < 78 < 71 < 49 Cs-137 < 59 < 79 < 57 < 45 Ba-140 < 345 < 338 < 325 < 200 La-140 < 109 < 72 < 101 < 41 Ce-141 < 80 < 112 < 77 < 68 Ce-144 < 307 < 420 < 264 < 237 Ra-226 3306 +/- 1071 < 1447 < 1230 < 1050 Ac-228 588 +/- 362 < 404 < 233 < 223 Th-228 630 +/- 157 521 +/- 101 < 100 171 +/- 104

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 84 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-15 RADIONUCLIDES IN SHORELINE SOIL SAMPLES - 2020 pCi/kg dry +/- 2 Sigma Cold Spring 84*

DATE 06/10/20 09/10/20 RADIOCHEMICAL Sr-90 < 41 < 50 GAMMA Be-7 < 433 < 493 K-40 32110 +/- 2077 29000 +/- 2227 Mn-54 < 71 < 57 Co-58 < 72 < 66 Fe-59 < 162 < 161 Co-60 < 84 < 60 Zn-65 < 180 < 176 Nb-95 < 70 < 67 Zr-95 < 116 < 111 Ru-103 < 58 < 63 Ru-106 < 464 < 480 1-131 < 100 < 98 Cs-134 < 80 < 88 Cs-137 < 63 < 67 Ba-140 < 293 < 315 La-140 < 97 < 74 Ce-141 < 85 < 76 Ce-144 < 303 < 301 Ra-226 < 1089 < 1309 Ac-228 608 +/- 201 < 412 Th-228 748 +/- 84 583 +/- 101

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 85 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-16 GAMMA EMITTERS IN AQUATIC VEGETATION SAMPLES - 2020 pCi/kg wet +/- 2 Sigma Lent's Cove 28 DATE 06/12/20 09/22/20 Myriophyllium Myriophyllium Be-7 (a) < 183 K-40 2641 +/- 470 Mn-54 < 18 Co-58 < 21 Fe-59 < 56 Co-60 < 16 Zn-65 < 51 Nb-95 < 20 Zr-95 < 37 Ru-103 < 21 Ru-106 < 185 1-131 < 26 Cs-134 < 24 Cs-137 < 28 Ba-140 < 86 La-140 < 25 Ce-141 < 29 Ce-144 < 126

• Ra-226 < 463 Ac-228 < 122 Th-228 < 34 (a) Unable to locate and collect samples at this location

Plant: Indian Point Energy Center I Year: 2020 I Page 86 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-16 GAMMA EMITTERS IN AQUATIC VEGETATION SAMPLES - 2020 pCi/kg wet +/- 2 Sigma Off Verplanck 17 DATE 06/12/20 09/21/20 Myriophyllium Myriophyllium Be-7 561 +/- 224 < 251 K-40 3167 +/- 448 2405 +/- 492 Mn-54 < 26 < 28 Co-58 < 22 < 31 Fe-59 < 48 < 67 Co-60 < 21 < 28 Zn-65 < 51 < 73 Nb-95 < 29 < 31 Zr-95 < 35 < 48 Ru-103 < 23 < 27 Ru-106 < 180 < 233 1-131 < 35 < 46 Cs-134 < 26 < 33 Cs-137 < 28 < 33 Ba-140 < 102 < 125 La-140 < 24 < 40 Ce-141 < 34 < 45 Ce-144 < 145 < 174 Ra-226 < 564 < 738 Ac-228 < 116 < 133 Th-228 143 +/- 46 < 62

Plant: Indian Point Energy Center I Year: 2020 I Page 87 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-16 GAMMA EMITTERS IN AQUATIC VEGETATION SAMPLES - 2020 pCi/kg wet +/- 2 Sigma Cold Spring 84*

DATE 06/10/20 09/21/20 Myriophyllium Be-7 < 259 (a)

K-40 3234 +/- 445 Mn-54 < 24 Co-58 < 19 Fe-59 < 49 Co-60 < 18 Zn-65 < 49 Nb-95 < 27 Zr-95 < 36 Ru-103 < 24 Ru-106 < 164 1-131 < 53 Cs-134 < 28 Cs-137 < 27 Ba-140 < 132 La-140 < 47 Ce-141 < 38 Ce-144 < 137 Ra-226 < 536 Ac-228 < 127 Th-228 < 57

• Control Location (a) Unable to locate and collect samples at this location

Plant: Indian Point Energy Center I Year: 2020 I Page 88 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-17 RADIONUCLIDES IN FISH/ INVERTEBRATES - 2020 pCi/kg wet +/- 2 Sigma Downstream 107 DATE 04/29/20 05/06/20 05/06/20 05/07/20 05/20/20 06/03/20 Eel Sunfish Perch Catfish Striped Bass Blue Crab RADIOCHEMICAL Ni-63 < 51 < 50 < 78 < 86 < 87 < 95 Sr-90 <4 < 4 < 5 < 3 <4 < 5 GAMMA Be-7 < 275 < 443 < 474 < 622 < 549 < 333 K-40 1798 +/- 534 2294 +/- 721 2433 +/- 890 3322 +/- 1027 2724 +/- 1248 2761 +/- 702 Mn-54 < 35 < 43 < 61 < 69 < 65 < 44 Co-58 < 35 < 36 < 68 < 75 < 71 < 22 Fe-59 < 70 < 94 < 118 < 152 < 145 < 77 Co-60 < 30 < 35 < 41 < 46 < 58 < 32 Zn-65 < 67 < 103 < 141 < 140 < 173 < 62 Nb-95 < 35 < 47 < 57 < 59 < 71 < 32 Zr-95 < 55 < 69 < 104 < 132 < 81 < 75 Ru-103 < 34 < 52 < 46 < 71 < 77 < 41 Ru-106 < 283 < 381 < 479 < 637 < 760 < 312 1-131 < 57 < 88 < 91 < 137 < 172 < 94 Cs-134 < 37 < 48 < 73 < 71 < 73 < 44 Cs-137 < 35 < 50 < 44 < 75 < 60 < 45 Ba-140 < 167 < 266 < 271 < 400 < 337 < 246 La-140 < 41 < 87 < 108 < 120 < 167 < 55 Ce-141 < 46 < 61 < 60 < 104 < 92 < 90 Ce-144 < 169 < 214 < 237 < 338 < 350 < 308 Ra-226 < 599 < 1013 < 844 < 1543 < 1672 < 1199 Th-228 < 61 < 83 < 76 < 130 < 117 < 106

Plant: Indian Point Energy Center I Year: 2020 I Page 89 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-17 RADIONUCLIDES IN FISH/ INVERTEBRATES - 2020 pCi/kg wet +/- 2 Sigma Downstream 107 DATE 08/18/20 08/23/20 08/23/20 08/23/20 09/11/20 Sunfish Catfish Blue Crab Perch Eel RADIOCHEMICAL Ni-63 < 74 < 62 < 75 < 92 < 90 Sr-90 < 5 <4 < 3 < 5 <4 GAMMA Be-7 < 643 < 427 < 481 < 608 < 342 K-40 2639 +/- 793 2134 +/- 900 2130 +/- 804 2576 +/- 996 2360 +/- 764 Mn-54 < 59 < 60 < 55 < 74 < 63 Co-58 < 75 < 45 < 59 < 63 < 38 Fe-59 < 145 < 126 < 138 < 148 < 98 Co-60 < 65 < 42 < 51 < 58 < 49 Zn-65 < 107 < 149 < 128 < 102 < 81 Nb-95 < 61 < 56 < 60 < 84 < 48 Zr-95 < 114 < 100 < 98 < 142 < 93 Ru-103 < 75 < 66 < 60 < 55 < 52 Ru-106 < 595 < 460 < 520 < 661 < 475 1-131 < 194 < 97 < 113 < 120 < 74 Cs-134 < 73 < 69 < 54 < 62 < 55 Cs-137 < 73 < 58 < 56 < 67 < 54 Ba-140 < 457 < 293 < 264 < 335 < 239 La-140 < 141 < 83 < 61 < 123 < 57 Ce-141 < 104 < 61 < 74 < 95 < 72 Ce-144 < 289 < 226 < 279 < 353 < 271 Ra-226 < 1311 < 895 < 1101 < 1312 < 1043 Th-228 < 103 < 77 < 94 < 122 < 88

Plant: Indian Point Energy Center I Year: 2020 I Page 90 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-17 RADIONUCLIDES IN FISH/ INVERTEBRATES - 2020 pCi/kg wet +/- 2 Sigma Roseton 23*

DATE 04/28/20 05/07/20 05/07/20 05/20/20 05/27/20 06/18/20 Eel Perch Striped Bass Catfish Perch Blue Crab RADIOCHEMICAL Ni-63 < 95 < 93 < 98 < 50 < 97 < 68 Sr-90 <4 < 5 <4 <4 <3 < 5 GAMMA Be-7 < 184 < 434 < 725 < 468 < 352 < 405 K-40 2121 +/- 420 2459 +/- 745 3063 +/- 919 3091 +/- 713 2386 +/- 790 3116 +/- 1002 Mn-54 < 21 < 38 < 64 < 43 < 38 < 48 Co-58 < 23 < 49 < 78 < 34 < 40 < 48 Fe-59 < 48 < 93 < 175 < 98 < 81 < 119 Co-60 < 26 < 30 < 75 < 52 < 44 < 63 Zn-65 < 46 < 74 < 116 < 85 < 103 < 123 Nb-95 < 24 < 41 < 62 < 47 < 43 < 52 Zr-95 < 46 < 74 < 148 < 105 < 60 < 109 Ru-103 < 24 < 55 < 78 < 57 < 50 < 51 Ru-106 < 195 < 361 < 510 < 503 < 409 < 447 1-131 < 44 < 89 < 437 < 124 < 81 < 83 Cs-134 < 27 < 37 < 66 < 49 < 40 < 62 Cs-137 < 25 < 56 < 58 < 52 < 38 < 55 Ba-140 < 121 < 223 < 687 < 324 < 230 < 285 La-140 < 22 < 62 < 171 < 111 < 88 < 72 Ce-141 < 32 < 105 < 112 < 119 < 58 < 62 Ce-144 < 109 < 395 < 268 < 382 < 209 < 211 Ra-226 < 413 < 1504 < 1107 < 1294 < 931 < 989 Th-228 < 37 < 102 < 85 < 102 < 75 < 72

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 91 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-17 RADIONUCLIDES IN FISH/ INVERTEBRATES - 2020 pCi/kg wet +/- 2 Sigma Roseton 23*

DATE 08/19/20 08/23/20 09/01/20 09/01/20 09/11/20 09/11/20 Sunfish Eel Perch Blue Crab Striped Bass Catfish RADIOCHEMICAL Ni-63 < 100 < 97 < 91 < 98 < 79 < 90 Sr-90 < 5 < 5 <5 <4 < 4 <4 GAMMA Be-7 < 435 < 366 < 460 < 377 < 421 < 615

. K-40 2215 +/- 820 1366 +/- 660 2799 +/- 938 2589 +/- 893 2581 +/- 1051 3464 +/- 1065 Mn-54 < 55 < 60 < 57 < 67 < 46 < 79 Co-58 < 41 < 60 < 53 < 55 < 58 < 74 Fe-59 < 136 < 116 < 106 < 107 < 87 < 178 Co-60 < 37 < 64 < 59 < 39 < 55 < 81 Zn-65 < 102 < 108 < 119 < 117 < 104 < 126 Nb-95 < 52 < 60 < 57 < 54 < 46 < 86 Zr-95 < 103 < 120 < 83 < 71 < 79 < 130 Ru-103 < 50 < 59 < 42 < 42 < 60 < 76 Ru-106 < 481 < 504 < 408 < 393 < 507 < 746 1-131 < 130 < 104 < 76 < 64 < 91 < 122 Cs-134 < 68 < 73 < 52 < 59 < 51 < 81 Cs-137 < 47 < 68 < 42 < 50 < 46 < 86 Ba-140 < 305 < 238 < 257 < 183 < 199 < 297 La-140 < 105 < 118 < 71 < 57 < 94 < 107 Ce-141 < 69 < 67 < 67 < 57 < 66 < 97 Ce-144 < 249 < 257 < 216 < 222 < 263 < 324 Ra-226 < 1053 < 1070 < 945 < 1052 < 1235 < 1557 Th-228 < 77 < 70 < 81 < 73 < 82 < 127

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 92 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-17 RADIONUCLIDES IN FISH/ INVERTEBRATES -2020 pCi/kg wet +/- 2 Sigma Roseton 23*

DATE 09/11/20 Eel RADIOCHEMICAL Ni-63 < 85 Sr-90 <4 GAMMA Be-7 < 462 K-40 2257 +/- 1027 Mn-54 < 59 Co-58 < 56 Fe-59 < 77 Co-60 < 76 Zn-65 < 102 Nb-95 < 52 Zr-95 < 57 Ru-103 < 53 Ru-106 < 420 1-131 < 71 Cs-134 < 60 Cs-137 < 72 Ba-140 < 240 La-140 < 75 Ce-141 < 60 Ce-144 < 236 Ra-226 < 1011 Th-228 < 80

• Control Location

Plant: Indian Point Energy Center I Year: 2020 I Page 93 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE B-17 RADIONUCLIDES IN FISH/ INVERTEBRATES - 2020 pCi/kg wet +/- 2 Sigma Downstream 25 DATE 04/30/20 05/06/20 05/06/20 05/06/20 05/14/20 06/09/20 Eel Sunfish Perch Catfish Striped Bass Blue Crab RADIOCHEMICAL Ni-63 < 92 < 86 < 79 < 55 < 75 < 96 Sr-90 < 4 <4 <4 <4 <4 < 5 GAMMA Be-7 < 229 < 490 < 721 < 556 < 787 < 382 K-40 2594 +/- 473 2883 +/- 1012 2189 +/- 1279 1568 +/- 910 3159 +/- 969 2486 +/- 753 Mn-54 < 27 < 68 < 68 < 55 < 59 < 40 Co-58 < 27 < 57 < 79 < 61 < 75 < 45 Fe-59 < 55 < 132 < 163 < 129 < 152 < 81 Co-60 < 29 < 57 < 91 < 66 < 58 < 37 Zn-65 < 62 < 141 < 178 < 87 < 145 < 80 Nb-95 < 30 < 94 < 86 < 63 < 67 < 42 Zr-95 < 45 < 110 < 130 < 98 < 144 < 73 Ru-103 < 28 < 68 < 69 < 62 < 91 < 41 Ru-106 < 275 < 678 < 670 < 586 < 487 < 404 1-131 < 45 < 131 < 156 < 121 < 214 < 85 Cs-134 < 28 < 76 < 94 < 88 < 60 < 46 Cs-137 < 29 < 67 < 94 < 66 < 63 < 46 Ba-140 < 138 < 376 < 401 < 311 < 588 < 224 La-140 < 39 < 132 < 116 < 106 < 174 < 49 Ce-141 < 39 < 103 < 100 < 95 < 124 < 63 Ce-144 < 137 < 286 < 318 < 359 < 380 < 181 Ra-226 < 572 < 1435 < 1508 < 1245 < 1401 < 873 Th-228 < 46 < 115 < 132 < 112 < 117 < 71

Plant: Indian Point Energy Center I Year: 2020 I Page 94 of 128 Annual Radiological Environmental Operating Report INDIAN POINT ENERGY CENTER TABLE 8-17 RADIONUCLIDES IN FISH/ INVERTEBRATES - 2020 pCi/kg wet +/- 2 Sigma Downstream 25 DATE 08/19/20 08/23/20 08/23/20 09/01/20 09/11/20 Sunfish Catfish Blue Crab Perch Striped Bass RADIOCHEMICAL Ni-63 < 83 < 42 < 88 < 88 < 89 Sr-90 < 5 < 3 < 3 <4 < 4 GAMMA Be-7 < 634 < 416 < 451 < 610 < 320 K-40 2488 +/- 962 2564 +/- 879 3202 +/- 761 2278 +/- 780 2071 +/- 971 Mn-54 < 71 < 34 < 35 < 66 < 44 Co-58 < 75 < 58 < 36 < 75 < 57 Fe-59 < 160 < 104 < 124 < 134 < 114 Co-60 < 78 < 70 < 51 < 70 < 40 Zn-65 < 133 < 88 < 117 < 172 < 99 Nb-95 < 79 < 55 < 57 < 76 < 44 Zr-95 < 115 < 95 < 73 < 106 < 61 Ru-103 < 81 < 64 < 59 < 76 < 48 Ru-106 < 549 < 427 < 465 < 619 < 477 1-131 < 171 < 95 < 106 < 120 < 70 Cs-134 < 70 < 50 < 44 < 88 < 65 Cs-137 < 69 < 63 < 49 < 83 < 47 Ba-140 < 422 < 350 < 252 < 446 < 222 La-140 < 120 < 87 < 62 < 104 < 88 Ce-141 < 96 < 80 < 65 < 95 < 48 Ce-144 < 332 < 305 < 258 < 319 < 203 Ra-226 < 1171 < 1228 < 1147 < 1551 < 895 Th-228 < 126 < 98 < 79 < 104 < 75

Plant: Indian Point Energy Center I Year: 2020 I Page 95 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-18 LAND USE CENSUS - RESIDENCE AND MILCH ANIMAL RESULTS 2020 The 2020 land use census indicated there were no new residences that were closer in proximity to IPEC.

IPEC maintains a complete nearest residence survey with updated distances.

No milch animals were observed during this reporting period within the 5-mile zone. There are no animals producing milk for human consumption within five miles of Indian Point.

Plant: Indian Point Energy Center I Year: 2020 I Page 96 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE B-19 LAND USE CENSUS 2020 UNRESTRICTED AREA BOUNDARY AND NEAREST RESIDENCES I*

'\

Distance to site Distance to site Distance to nearest '

Boundary from Unit 2 Boundary from Unit 3 resident, from Unit 1 Plant Vent (meters) Plant Vent (meters) superheater (meters)

Sector Compass Point Address of nearest resident, Last Census 1 N RIVER RIVER 1788 41 River Road Tomkins Cove 2 NNE RIVER RIVER 3111 Chateau Rive Apts . John St. Peekskill 3 NE 550 636 1907 211 Viewpoint Terrace , Peekskill 4 ENE 600 775 1478 1018 Lower South St. Peekskill 5 E 662 785 1371 1103 Lower South St. Peekskill 6 ESE 569 622 715 461 Broadway Buchanan 7 SE 553 564 1168 223 First St. Buchanan 8 SSE 569 551 1240 5 Pheasant's Run Buchanan 9 s 700 566 1133 320 Broadway Verplanck 10 SSW 755 480 1574 240 Eleventh St. Verplanck 11 SW 544 350 3016 8 SprinQ St. Tomkins Cove 12 WSW RIVER RIVER 2170 9 West Shore Dr. Tomkins Cove 13 w RIVER RIVER 1919 712 Rt. 9W Tomkins Cove 14 WNW RIVER RIVER 1752 770 Rt. 9W Tomkins Cove 15 NW RIVER RIVER 1693 807 Rt. 9W Tomkins Cove 16 NNW RIVER RIVER 1609 4 River Rd . Tomkins Cove

Plant: Indian Point Energy Center / Year: 2020 / Page 97 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT SECTION 6.0 HISTORICAL TRENDS

Plant: Indian Point Energy Center I Year: 2020 I Page 98 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT HISTORICAL TRENDS The past ten years of historical data for various radionuclides and media are presented both in tabular form and graphical form to facilitate the comparison of 2020 data with historical values. Although other samples were taken and analyzed, values were only tabulated and plotted where positive indications were present.

Averaging the positive values in these tables can result in a -biased high - --

value, especially, when the radionuclide is detected in only one or two quarters for the year.

Plant: Indian Point Energy Center I Year: 2020 I Page 99 of 128 Annual Radiological Environmental Operating Report TABLE C-1 DIRECT RADIATION, ANNUAL

SUMMARY

2010-2020 Averag~. Qu.artkrly.

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• pbse~ (Jll Ri91uarte1{*

' " * - - ' " \

'-----"~----¥-- ---~..-¥-,,_*,.,,.* ____ L-~~- ~.-\:!>j'* .,___ ,,;,:-~. . *~~~"---~~:-~---.,.~>*yr'* ..

• Ldcation

-"""-~--~""*,_.~:"'"-- "~---*C0*.~.,,~*~ ~ ' > . ' > , ---*~., ,. ' * -~----* .,

2010 14.0 14.3 13.0 2011 13.6 14.4 13.4 2012 13.2 13.5 12.5 2013 13.4 13.8 14.2 2014 13.7 13.6 14.2 2015 13.8 14.0 14.3 2016 14.3 14.2 15.6 2017 14.3 14.7 15.6 2018 14.0 14.4 15.3 2019 13.7 13.9 15.0 2020 14.0 14.2 15.4

. H}$toric~! Aver~g<<f*

13.8 14.1 14.3

. ;:: ,20~ 0.:.201" 9 i : .*

Plant: Indian Point Energy Center I Year: 2020 I Page 100 of 128 Annual Radiological Environmental Operating Report Figure C-1 DIRECT RADIATION, ANNUAL

SUMMARY

2010-2020 40.0 - . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ,

ISS&':il!iSlnner Ring

=outer Ring

- Control Location 35.0 30.0 Cl) 25.0 t::

ns

I a

~

E 20.0

'2 ns Cl)

~

15.0 10.0 5.0 0.0 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Plant: Indian Point Energy Center Year: 2020 Page 101 of 128 Annual Radiological Environmental Operating Report TABLE C-2 RADIONUCLIDES IN AIR 2010-2020 3

(pCi/m )

• All Indicator .. ContfJ1* ***:All indicator * *-'Control'

. . .*locatioil~ Locatiori ... J<S~~t;~~s . L<>G~Jiori" 2010 0.01 0.01 < Le < Le 2011 0.014 0.014 < Le < Le 2012 0.014 0.014 < Le < Le 2013 0.014 0.014 < Le < Le 2014 0.013 0.013 < Le < Le 2015 0.016 0.015 < Le < Le 2016 0.015 0.015 < Le < Le 2017 0.013 0.012 < Le < Le 2018 0.013 0.012 < Le < Le 2019 0.012 0.012 < Le < Le 2020 0.013 0.013 < Le < Le 0.01 0.01 Critical Level (Le) is less than the ODCM required LLD.

<Le indicates no positive values above sample critical level.

Plant: Indian Point Energy Center I Year: 2020 I Page 102 of 128 Annual Radiological Environmental Operating Report Figure C-2 RADIONUCLIDES IN AIR - GROSS BETA 2010-2020 0.05 , - - - - - - - - - - - - - - - - - - - - - , - - - - - - - - - - - - ,

I I All Indicator Locations

- Control Location 0.04 0.03

~

(.)

C.

0.02 0.01 0

2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Plant: Indian Point Energy Center Year: 2020 Page 103 of 128 Annual Radiological Environmental Operating Report TABLE C-3 RADIONUCLIDES IN HUDSON RIVER WATER-TRITIUM 2010-2020 (pCi/L)

Tritium 0-t-3) CS-137 Year Inlet Discharge Inlet Discharge 2010 428 < Le < Le < Le 2011 < Le 661 < Le < Le 2012 < Le 539 < Le < Le 2013 241 462 < Le < Le 2014 224 253 < Le < Le 2015 188 341 < Le < Le 2016 < Le 415 < Le < Le 2017 < Le 299 < Le < Le 2018 236 266 < Le < Le 2019 273 295 < Le < Le 2020 (b) < Le 288 < Le < Le Historicijl Average l 265 392 < Le < Le 2010.:.2019 I Critical Level (Le) is less than the ODCM required LLD.

<Le indicates no positive values above sample critical level.

(b) Refer REMP changes table B-1c

Plant: Indian Point Energy Center I Year: 2020 I Page 104 of 128 Annual Radiological Environmental Operating Report Figure C-3 RADIONUCLIDES IN HUDSON RIVER WATER - TRITIUM 2010-2020 2000 - , - - - - - - - - - - - - - - - - - - - - - - - , - - - - - - - -

Inlet (H-3) Discharge (H-3) 1800 1600 1400 1200

..J i:,1000 C.

800 600 400 200 0

2010 2011 2012 2013 2014 2015 2016 2017 2019 2020 (b)

Plant: Indian Point Energy Center Year: 2020 Page 105 of 128 Annual Radiological Environmental Operating Report TABLE C-4 RADIONUCLIDES IN DRINKING WATER 2010-2020 (pCi/L)

Year Tritium (H-3) Cs-137

< Le < Le 2010

< Le < Le 2011

< Le < Le 2012

< Le < Le 2013

< Le < Le 2014

< Le < Le 2015

< Le < Le 2016

< Le < Le 2017

< Le < Le 2018

< Le < Le 2019 2020 < Le < Le Histori,~al Average*, I

< Le < Le 2010-2019 .  !

Critical Level (Le) is less than the ODCM required LLD.

<Le indicates no positive values above sample critical level.

Plant: Indian Point Energy Center I Year: 2020 I Page 106 of 128 Annual Radiological Environmental Operating Report Figure C-4 RADIONUCLIDES IN DRINKING WATER 2010-2020 2000 - , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ,

1800 1600 1400 1200

.J 5 1000 C.

NO IDENTIFIED NUCLIDES IN PREVIOUS TEN YEARS HISTORY 800 600 400 200 0 -+-----,-----,---.,...---r----,-------,-----,-----,-----,-----,-----1 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Plant: Indian Point Energy Center Year: 2020 Page 107 of 128 Annual Radiological Environmental Operating Report TABLE C-5 RADIONUCLIDES IN SHORELINE SOIL 2010;.2020 (pCi/Kg, dry)

Cs-134 Cs-137

• 2010 < Le < Le 154 63 2011 < Le < Le 108 < Le 2012 < Le < Le 141 < Le 2013 < Le < Le 133 < Le 2014 < Le < Le 327 < Le 2015 < Le < Le 110 < Le 2016 < Le < Le < Le < Le 2017 < Le < Le 151 < Le 2018 < Le < Le 129 < Le 2019 < Le < Le 104 < Le 2020 < Le < Le 96 < Le

• HistoriCij!*:Averag~

< Le < Le 151 63

. ' .201 qi201"~* / '

Critical Level (Le) is less than the ODCM required LLD.

<Le indicates no positive values above sample critical level.

Plant: Indian Point Energy Center I Year: 2020 I Page 108 of 128 Annual Radiological Environmental Operating Report Figure C-5 RADIONUCLIDES IN SHORELINE SEDIMENT 2010-2020 1-----* 'ndicator (Cs-134) 700 1-*---* Gontrol (Cs-134)

= Indicator (Cs-137) 600

--control (Cs-137) 500

~

"C 400

-c3 C)

~

C.

300 200

~

100 - - ,_ r

,. "7:

\

""}

It' 1, ':.

0 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Plant: Indian Point Energy Center I Year: 2020 I Page 109 of 128 Annual Radiological Environmental Operating Report TABLE C-6 RADIONUCLIDES IN BROAD LEAF VEGETATION 2010-2020 (pCi/Kg, wet)

Cs-137 Year lndic;:1tor

• Control

- -, - -- -"- -- -- ***- ~--- "" - ~--- - - ----~- -- -- - - - - - - - - - -- - - - ---* _ _ ,,_ <<" ~ -> --- -- -- ~ - ~-----

2010 31 < Le 2011 < Le < Le 2012 44 < Le 2013 < Le < Le 2014 < Le < Le 2015 < Le < Le 2016 < Le < Le 2017 < Le < Le 2018 < Le < Le 2019 < Le < Le 2020 < Le < Le Historical Average 38 < Le 2009-2018

-I Critical Level (Le) is less than the ODCM required LLD.

<Le indicates no positive values above sample critical level.

Plant: Indian Point Energy Center I Year: 2020 I Page 110 of 128 Annual Radiological Environmental Operating Report Figure C-6 RADIONUCLIDES IN BROAD LEAF VEGETATION 2010-2020 100 - , - - - - - - - - - - - - - - - - - - - - - , - - - - - - - - - - - - - - , . ,

Indicator (Cs-137) Control (Cs-137) 80 60 C)

~

uC.

40 20 0

2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Plant: Indian Point Energy Center I Year: 2020 I Page 111 of 128 Annual Radiological Envi.ronmental Operating Report TABLE C-7 RADIONUCLIDE IN FISH AND INVERTEBRATES 2010-2020

{pCi/Kg, dry) vEiir .'* 1n'~icato~. (fo~,t~dl' ,.

2010 < Le < Le 2011 < Le < Le 2012 < Le < Le 2013 < Le < Le 2014 < Le < Le 2015 < Le < Le 2016 < Le < Le 2017 < Le < Le 2018 < Le < Le 2019 < Le < Le 2020 < Le < Le Historical Averag~ < Le < Le

'2010;2020 ..

Critical Level (Le) is less than the ODCM required LLD.

<Le indicates no positive values above sample critical level.

Plant: Indian Point Energy Center I Year: 2020 I Page 112 of 128 Annual Radiological Environmental Operating Report Figure C-7 RADIONUCLIDES IN FISH AND INVERTEBRATES 2010-2020 200 ,-----------------------===========;,

Indicator (Cs-137) Control (Cs-137) 180 160 140 120 80 NO IDENTIFIED Cs-137 IN PREVIOUS TEN YEARS HISTORY 60 40 20 0 +-----,-----r-----,---------,------,-----,-----,---------.-------.--------.------t 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Plant: Indian Point Energy Center Year: 2020 Page 113 of 128 Annual Radiological Environmental Operating Report TABLE C-8 RIVER WATER - Discharge Area - Tritium REMP vs. EFFLUENT (pCi/L)

Year RE:MP* *EFFLU.ENT **

... ,~ . ""' . *:** ,* ..

1Q 2017 216 912 2Q 2017 <191 372 3Q 2017 <179 51 4Q 2017 381 665 1Q 2018 273 659 2Q 2018 326 439 3Q 2018 <197 332 4Q 2018 199 418 1Q 2019 296 484 2Q 2019 294 602 3Q 2019 <187 74 4Q 2019 <181 8 1Q 2020 347 1021 2Q 2020 <176 470 3Q 2020 <177 188 4Q 2020 229 866 FotiFYearAverag~. by 285 473 Quarter, 2017 - 2020

• Sample from mixing zone, expected to be less than average activity in the discharge canal.

• • Based upon Effluent Report data, average activity in the discharge canal calculated from the total H-3 discharged divided by the total dilution volume for the quarter.

Plant: Indian Point Energy Center I Year: 2020 I Page 114 of 128 Annual Radiological Environmental Operating Report TABLE C-9 RADIONUCLIDES IN BOTTOM SEDIMENT 2010-2020 (pCi/Kg, dry)

Cs-"137 Year Indicator Control 2010 552 < Le 2011 287 238 2012 284 < Le 2013 2738 264 2014 327 < Le 2015 876 < Le 2016 224 < Le 2017 350 < Le 2018 741 198 2019 190 176 2020 167 207 Hi~~o~ic~fAverage*! 612 219

• 2010-2019 l Critical Level (Le) is less than the RETS required LLD.

<Le indicates no positive values above sample critical level.

Plant: Indian Point Energy Center I Year: 2020 I Page 115 of 128 Annual Radiological Environmental Operating Report Figure C-9 RADIONUCLIDES IN BOTTOM SEDIMENT 2010-2020 2800

= lndicator-Contro 2600 2400 2200 2000 1800 1600

~ 1400 "C

Cl

ii::

uC. 1200 1000 800 600 400 200 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Plant: Indian Point Energy Center / Year: 2020 / Page 116 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT SECTION 7.0 INTERLABORATORY COMPARISON PROGRAM

Plant: Indian Point Energy Center I Year: 2020 I Page 117 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT INTERLABORATORY COMPARISON PROGRAM This section presents the results of the interlaboratory comparison program for the Teledyne Brown Engineering Environmental Services and Environmental Dosimetry Company.

7.1 Program Description - Teledyne Brown Engineering Environmental Services Comparison Programs The Teledyne Brown Engineering Environmental Services participates in several interlaboratory comparison programs. These programs include sample media for which samples are routinely collected and for which comparison samples are commercially available. Participation in these interlaboratory comparison programs ensure 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 lnterlaboratory Comparison Program, Teledyne Brown Engineering Environmental Services has engaged the following programs:

• Eckert & Ziegler Analytics Environmental Radioactivity Cross Check Program

• Department of Energy (DOE) Mixed Analyte Performance Evaluation Program (MAPEP)

• Environmental Resource Associates (ERA) Cross Check Program These programs supply sample media as blind samples (typically 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 using standard laboratory procedures. Each program issues a statistical summary report of the results. Teledyne Brown Engineering Environmental Services uses predetermined acceptance criteria methodology for evaluating its laboratory performance.

Teledyne Brown Engineering Environmental Services also analyzes laboratory blanks. The analysis of laboratory blanks provides a means to detect and measure radioactive contamination of analytical samples. The analysis of analytical blanks also provides information on the adequacy of background subtraction. Laboratory blank results are analyzed using control charts.

7 .2 Acceptance Criteria Each sample result is evaluated to determine the accuracy and precision of the laboratory's analysis result. The sample evaluation method is discussed below.

7 .2.1 Analytics Sample Results Evaluation Samples provided by Analytics are evaluated using what is specified as the NRC method.

This method is based on the calculation of the ratio of results reported by the participating laboratory (QC result) to the Vendor Laboratory Known value (reference result).

Plant: Indian Point Energy Center I Year: 2020 I Page 118 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT An Environmental Laboratory analytical result is evaluated using the following calculation:

The value for the error resolution is calculated.

Error Resolution = Reference Result Reference Results Error (1 sigma)

Using the appropriate row under the Error Resolution column in Table D-2.1, a corresponding Ratio of Agreement interval is given for use in Tables D-3.1, D-3.2, and D-3.3 The value for the ratio is then calculated.

Ratio of agreement = QC Result Reference Result If the value falls within the agreement interval, the result is acceptable.

TABLE D-2.1 Ratio of Agreement ERROR RESOLUTION RATIO OF AGREEMENT

<4 No Comparison 4 to 7 0.5-2.0 8 to 15 0.6-1.66 16 to 50 0.75-1.33 51 to 200 0.8-1.25

>200 0.85-1.18 This acceptance test is generally referred to as the "NRC" method. The acceptance criteria are contained in Procedure EN-CY-102. The NRC method generally results in an acceptance range of approximately +/- 25% of the Known value when applied to sample results from the Eckert & Ziegler Analytics lnterlaboratory Comparison Program. This method is used as the procedurally required assessment method and requires6 the generation of a deviation from QA/QC program report when results are unacceptable. **

7 .2.2 ERA and MAPEP Sample Result Evaluation Both these programs supply an acceptance range for evaluating the results.

7.3 Program Results Summary The lnterlaboratory Comparison Program numerical results are summarized in the following tables.

Plant: Indian Point Energy Center I Year: 2020 I Page 119 of 128 Annual Radiological Environmental Operating Report TABLE D-3.1 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 Cb)

Number Value (a) Known Result September 2020 E13247 Milk Sr-89 pCi/L 62.8 95.4 0.66 Nc1)

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 1-131 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 1-131 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)

Plant: Indian Point Energy Center Year: 2020 Page 120 of 128 Annual Radiological Environmental Operating Report TABLE D-3.1 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 1-131 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 1-131 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 of0.80-1.20 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)

Plant: Indian Point Energy Center I Year:2020 I Page 121 of 128 Annual Radiological Environmental Operating Report TABLE D-3.2 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 Sq/sample 0.676 1.24 0.37 - 2.11 A Gross Beta Sq/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 Sq/sample 0.0416 0.075 0.053 - 0.098 N{3J U-238 Sq/sample 0.0388 0.078 0.055 - 0.101 N{3J 20-RdV42 Vegetation Cs-134 Sq/sample 3.23 3.82 2.67 - 4.97 A Cs-137 Sq/sample 2.64 2.77 1.94- 3.60 A Co-57 Sq/sample 0.0281 (1) A Co-60 Sq/sample 2.62 2.79 1.95- 3.63 A Mn-54 Sq/sample 4.3 4.58 3.21 - 5.95 A Sr-90 Sq/sample 0.396 0.492 0.344 - 0.640 A Zn-65 Sq/sample 3.93 3.79 2.65-4.93 A August 2020 20-GrF43 AP Gross Alpha Sq/sample 0.267 0.528 0.158 - 0.989 A Gross Beta Sq/sample 0.939 0.915 0.458 - 1.373 A 20-MaS43 Soil Ni-63 Bq/kg 438 980 686-1274 N{4J 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 Sq/sample 3.635 4.94 3.46 - 6.42 w Cs-137 Sq/sample 0.0341 (1) A Co-57 Sq/sample 5.855 6.67 4.67 - 8.67 w Co-60 Sq/sample 3.122 4.13 2.89 - 5.37 w Mn-54 Sq/sample 4.524 5.84 4.09- 7.59 A Sr-90 Sq/sample 1.01 1.39 0.97 - 1.81 w Zn-65 Sq/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) DOEIMAPEP 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)

Plant: Indian Point Energy Center I Year: 2020 I Page 122 of 128 Annual Radiological Environmental Operating Report TABLE D-3.3 ERA Environmental Radioactivity Cross Check Program Teledyne Brown Engineering Environmental Services Identification Known Acceptance MonthNear Matrix Nuclide Units TBEValue Evaluation (b)

Number Value<*> 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-8 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 1-131 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 Nc1J GR-8 pCi/L 47.5 69.1 48.0 - 76.0 Nc1J 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 1-131 pCi/L 22.9 28.2 23.5 - 33.1 Nc2J 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)

~

Plant: Indian Point Energy Center I Year: 2020 I Page 123 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 7.4 Environmental TLD Quality Assurance Environmental dosimetry services for the reporting period of January - December, 2020 were provided by the Environmental Dosimetry Company (EDC), Sterling, Massachusetts. 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.

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.

Dosimetry quality control tests are performed on EDC Panasonic 814 Environmental dosimeters. These tests include: (1) the in house testing program conducted by the EDC QA Officer and (2) independent test perform by EDC clients.

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.

Table D-4.1 provides a summary of individual dosimeter results evaluated against the EDC internal acceptance criteria for high-energy photons (Cs-137) only. The internal acceptance (tolerance) criteria for the Panasonic Environmental dosimeters are: +/- 15%

for bias and +/- 12.8% for precision. During this period, 100% (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.

Table D-4.2 provides the Bias + 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.

Table D-4.3 presents the independent blind spike results for irradiated dosimeters provided by client utilities during this annual period. All results passed the performance acceptance criterion.

TABLE D-4.1 PERCENTAGE OF INDIVIDUAL DOSIMETERS THAT PASSED EDC INTERNAL CRITERIA JANUARY - DECEMBER 2020 (ll, 121

',A *:'

,.,e'

• Number ' ,,,%.l>assed Prec.ision*

Dos1m'eter Type  % Passed Bias C,riteria;* .

Tested Criteria Panasonic Environmental 72 100 100 1

( lThis table summarizes results oftests conducted by EDC.

(ZlEnvironmental dosimeter results are free in air.

Plant: Indian Point Energy Center I Year: 2020 I Page 124 of 128 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT TABLE D-4.2 MEAN DOSIMETER ANALYSES (N=G)

JANUARY - DECEMBER 2020 111,1 21 Standard Tol~rance Process. Date.\ Meari~ias%

• ,.. ',-, ",,,,>" D~.yja~iQn % .. . Lirnff+l-15%:

4/28/2020 1.8 1.2 Pass 5/02/2020 2.9 1.4 Pass 5/20/2020 -0.5 1.4 Pass 7/28/2020 4.1 0.6 Pass 8/07/2020 4.0 1.3 Pass 9/24/2020 -4.6 1.2 Pass 10/24/2020 5.2 1.6 Pass 10/28/2020 1.6 0.7 Pass 11/18/2020 0.5 1.6 Pass 01/21/2021 3.8 1.7 Pass 02/09/2021 0.3 0.8 Pass 02/16/2021 5.3 1,5 Pass (llThis table summarizes results of tests conducted by EDC for TLDs issued in 2020.

2

( lEnvironmental dosimeter results are free in air.

TABLE D-4.3

SUMMARY

OF INDEPENDENT DOSIMETER TESTING JANUARY - DECEMBER 2020 <11, 121 Pass/Fail pt Qtr. 2020 Millstone -3.8 3.0 Pass 2 nd Qtr.2020 Seabrook 0.5 1.4 Pass 2nd Qtr.2020 Millstone -3.0 1.6 Pass 3 rd Qtr. 2020 Millstone 0.4 2.6 Pass 4 th Qtr.2020 PSEG(PNNL) -3.2 0.9 Pass 4 th Qtr.2020 Seabrook 6.9 1.9 Pass 4 th Qtr.2020 SONGS -8.4 1.3 Pass 4th Qtr.2020 Millstone 3.0 1.9 Pass (llPerformance criteria are+/- 30%.

(ZlBlind spike irradiations using Cs-137

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8.0 REFERENCES

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