Text

2021 Annual Radiological Environmental Operating Report
	ML22111A327
Person / Time
Site:	Diablo Canyon
Issue date:	04/21/2022
From:	Petersen D; Pacific Gas & Electric Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	DCL-22-025
	Download: ML22111A327 (253)
	v • d • e

Pacific Gas and Electric Company" Dennis B. Petersen Diablo Canyon Power Plant Station Director P.O. Box 56 Avila Beach, CA 93424 805.545.4022 E-Mail: Dennis.Petersen@pge.com PG&E Letter DCL-22-025 U.S. Nuclear Regulatory Commission 10 CFR 50, Appendix I ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Power Plant, Units 1 and 2 2021 Annual Radiological Environmental Operating Report

Dear Commissioners and Staff:

In accordance with Diablo Canyon Power Plant, Units 1 and 2, Technical Specification 5.6.2, Pacific Gas and Electric Company hereby submits the 2021 Annual Radiological Environmental Operating Report (AREOR). The AREOR, provided in the enclosure, covers the operation of Units 1 and 2 for the period of January 1 through December 31, 2021 . This report contains material consistent with the objectives of the Offsite Dose Calculation Manual, and 10 CFR 50, Appendix I, Sections IV.B.2, IV.B.3, and IV.C.

There are no new or revised regulatory commitments in this report (as defined by NEI 99-04).

If you have any questions regarding this submittal, please contact Mr. Craig Sutton, Radiation Protection Manager, at (805) 545-4208.

Sincerely, Dennis Petersen Date A member of t he STARS Al li ance Ca l l away

Diabl o Ca nyon

Pal o Ver de

Wol f Cree k

Document Control Desk PG&E Letter DCL-22-025 Page 2 Enclosure armb/4743/50942685-11 cc: Diablo Distribution cc/enc: Dr. Penny E. Borenstein, San Luis Obispo County Health Officer Nicholas A. Hernandez, NRC Acting Senior Resident Inspector Matthew T. Keeling, Executive Officer, Central Coast Regional Water Quality Control Board Samson S. Lee, NRC Project Manager Scott A. Morris, NRC Region IV Administrator Gonzalo L. Perez, Branch Chief, California Department of Public Health Gary E. Willey, Air Pollution Control Officer, San Luis Obispo County Air Pollution Control District A member of the STARS Alli ance C a l l a wa y

D i a b l o C a n y o n

P a l o V e r d e

W o l f C r e e k

Enclosure PG&E Letter DCL-22-025 2021 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT

2021 ANNUAL RADIOLGICAL ENVIRONMENTAL OPERATING REPORT Diablo Canyon Power Plant January 1, 2021- December 31, 2021

2021 Diablo Canyon Power Plant ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT (AREOR)

January 1, 2021- December 31, 2021 Prepared By Pacific Gas & Electric Company Diablo canyon Power Plant Prepared by: Date:

Austin Luedtke, DCPP RP Engineer Reviewed by: Date: 4/5/2022 Rick Treinen, DCPP Senior RP Engineer Date: 4/7/2022

Table of Contents 1 Executive Summary ............................................................................................................................... 1 2 Introduction .......................................................................................................................................... 3 3 Program Design ..................................................................................................................................... 5 3.1 Monitoring Zones .......................................................................................................................... 6 3.2 Pathways and Descriptions of REMP Monitoring ......................................................................... 6 3.2.1 Direct Radiation .................................................................................................................... 6 3.2.2 Airborne Radioactivity .......................................................................................................... 7 3.2.3 Waterborne ......................................................................................................................... 11 3.2.4 Marine Biological, Beach Sand, Ocean Sediment ............................................................... 13 3.2.5 Food Crops .......................................................................................................................... 15 3.2.6 Milk ..................................................................................................................................... 16 3.2.7 Meat .................................................................................................................................... 16 4 Radiological Data - Summary Tables ................................................................................................... 26 5 Analysis of Environmental Results ...................................................................................................... 42 5.1 REMP Sampling Variance/Deviations.......................................................................................... 42 5.1.1 Direct Radiation .................................................................................................................. 42 5.1.2 Airborne Radioactivity ........................................................................................................ 43 5.1.3 Marine Samples .................................................................................................................. 44 5.1.1 Terrestrial Samples ............................................................................................................. 44 5.1.2 Surface Water, Drinking Water, and Groundwater ............................................................ 44 5.1.3 Replicate Samples ............................................................................................................... 45 5.2 Comparison of Achieved LLDs With Requirements .................................................................... 45 5.3 Comparison of Results Against REMP Reporting Levels ............................................................. 46 ii

Table of Contents (Cont.)

5.4 Data Analysis by Media Type ...................................................................................................... 46 5.4.1 Direct Radiation (Environmental TLDs) ............................................................................... 46 5.4.2 Direct Radiation from onsite ISFSI ...................................................................................... 50 5.4.3 Airborne .............................................................................................................................. 53 5.4.4 Drinking Water and Ocean Surface Water.......................................................................... 54 5.4.5 Marine Samples .................................................................................................................. 54 5.4.6 Vegetation (Food Crops) ..................................................................................................... 56 5.4.7 Milk ..................................................................................................................................... 56 5.4.8 Meat .................................................................................................................................... 56 6 Groundwater Monitoring.................................................................................................................... 57 6.1 NEI 07-07 Groundwater Protection Initiative Reporting ........................................................... 57 6.2 Groundwater Sampling Overview ............................................................................................... 57 7 OSGSF Monitoring............................................................................................................................... 61 8 2021 DCPP Land Use Census ............................................................................................................... 62 8.1 Milk ............................................................................................................................................. 62 8.2 Residences .................................................................................................................................. 62 8.3 Gardens ....................................................................................................................................... 63 8.4 Additional Land Use .................................................................................................................... 63 8.5 NEI 07-07 Groundwater Protection Initiative (GPI) Review:....................................................... 64 8.6 Old Steam Generator Storage Facility (OSGSF):.......................................................................... 64 8.7 Independent Spent Fuel Storage Installation (ISFSI): ................................................................. 65 9 Wind Rose Charts ................................................................................................................................ 66 10 References .......................................................................................................................................... 69 11 Cross Check Program .......................................................................................................................... 70 12 GEL Sample Results ........................................................................................................................... 127 iii

List of Tables Table 3-1: Direct Radiation Monitoring ........................................................................................................ 7 Table 3-2: Airborne Radioiodine. Samples from > 4 stations: ...................................................................... 9 Table 3-3: Airborne Particulate. Samples from > 4 stations: ...................................................................... 10 Table 3-4: Airborne Carbon-14. Samples from 3 stations: ......................................................................... 10 Table 3-5: Surface Ocean Water ................................................................................................................. 11 Table 3-6: Drinking Water ........................................................................................................................... 12 Table 3-7: Groundwater .............................................................................................................................. 12 Table 3-8: Marine Flora ............................................................................................................................... 14 Table 3-9: Fish and Invertebrates ............................................................................................................... 14 Table 3-10: Ocean Sediment and Beach Sand ............................................................................................ 14 Table 3-11: Broadleaf Vegetation ............................................................................................................... 15 Table 3-12: Vegetative Crops ...................................................................................................................... 15 Table 3-13: Milk Samples. ........................................................................................................................... 16 Table 3-14: Meat Samples. ......................................................................................................................... 17 Table 3-15: Distances and directions to environmental monitoring stations. ........................................... 18 Table 3-16: Detection Capabilities for Environmental Sample Analysis and Lower Limits of Detection.... 20 Table 3-17: Reporting Levels for Radioactivity Concentrations in Environmental Samples ....................... 22 Table 4-1: Direct Radiation ......................................................................................................................... 27 Table 4-2: Airborne ..................................................................................................................................... 28 Table 4-3: Surface Water ............................................................................................................................ 29 Table 4-4: Drinking Water ........................................................................................................................... 30 Table 4-5: Mussels ...................................................................................................................................... 31 Table 4-6: Fish ............................................................................................................................................. 32 Table 4-7: Algae .......................................................................................................................................... 33 Table 4-8: Kelp ............................................................................................................................................ 34 Table 4-9: Vegetative Crops ........................................................................................................................ 35 Table 4-10: Milk .......................................................................................................................................... 36 Table 4-11: Meat ......................................................................................................................................... 37 Table 4-12: Ocean Sediment ....................................................................................................................... 38 Table 4-13: Beach Sand ............................................................................................................................... 39 Table 4-14: Groundwater ............................................................................................................................ 40 Table 4-15: Monitoring Wells ..................................................................................................................... 41 Table 5-1: 2021 Quarterly and Annual TLD Analysis ................................................................................... 47 Table 5-2: Quarterly and Annual ISFSI Environmental TLD Analysis........................................................... 51 Table 8-1: Land Use Census 2021. .............................................................................................................. 65 iv

List of Figures Figure 1: Monitored Potential Exposure Pathways ...................................................................................... 3 Figure 2: Diablo Canyon Off-site Stations. .................................................................................................. 23 Figure 3: Diablo Canyon Onsite REMP Stations .......................................................................................... 24 Figure 4: Relief map showing REMP stations.............................................................................................. 25 Figure 5: TLD trending by distance from DCPP ........................................................................................... 48 Figure 6: Average TLD results from southeast and northwest sectors with control stations. ................... 49 Figure 7: Onsite ISFSI boundary TLD Stations ............................................................................................. 52 Figure 8: DCPP site layout ........................................................................................................................... 59 Figure 9: DCPP Plant Layout ........................................................................................................................ 60 Figure 10: Wind rose charts 10 meter level 2021. ...................................................................................... 67 Figure 11: Wind rose chart 10 meter level 2017-2021. .............................................................................. 68 v

1 Executive Summary This report contains results from the operational Radiological Environmental Monitoring Program (REMP) for Diablo Canyon Power Plant (DCPP) compiled for the period January 1, 2021 through December 31, 2021. The purpose of the REMP is to assess the levels of radiation or radioactivity in the environment and to verify that DCPP is operating within its design parameters. Approximately 275 environmental samples, 884 air samples, and 1440 thermo-luminescent dosimeter (TLD) phosphors were collected over the course of the 2021 REMP monitoring period. Approximately 1800 radionuclide analyses were performed on the environmental samples.

The REMP is conducted in accordance with DCPP Program Directive CY2, Radiological Monitoring and Controls Program, and RP1.ID11, Environmental Radiological Monitoring Procedure. This report is submitted per DCPP License Technical Specification 5.6.2.

The types of samples (matrix ID) collected for this monitoring period were as follows:

AP - Air Particulate DW - Drinking Water AC - Air Cartridge for I-131 monitoring GW - Groundwater/ Monitor Well AC14 - Air Cartridge for Carbon-14 monitoring SW - Surface Water TLD - Direct Radiation AV - Aquatic Vegetation MK - Milk FH - Fish MT - Meat IM - Mussels VG - Vegetation SD - Sediment The annual offsite radiological dose received by the general public from plant operations was less than one millirem (mrem) which is insignificant when compared to the 620 millirem average annual radiation exposure to people in the United States from natural and man-made background radiation sources (e.g.

cosmic, terrestrial, radon, medical, etc.). The ambient direct radiation levels in the DCPP offsite environs did not change and were within the pre-operational background range. An evaluation of direct radiation measurements indicated all federal EPA 40CFR190 criteria were conservatively met. Operation of DCPP continued to have no detectable offsite radiological impact. Samples analyzed from the offsite sampling stations continued to show no radiological contribution from plant operations.

The ambient onsite direct radiation levels within the DCPP plant site boundary near the Independent Spent Fuel Storage Installation (ISFSI) are elevated due to dry cask spent fuel storage. The remaining onsite REMP environmental TLD locations are not affected by the ISFSI due to ISFSI topographical elevation and placement within an onsite hillside which provides shielding to the rest of the site. An evaluation of direct radiation measurements and member-of-public occupancy times within the site boundary indicated all federal criteria for member-of-public dose limits (10CFR20.1301) were conservatively met.

Groundwater isotopic monitoring was conducted in accordance with the Nuclear Energy Institute (NEI) 07-07 Rev 1 Groundwater Protection Initiative (GPI). Concentrations of tritium were detected in two shallow monitoring wells (stations DY1 and OW1) near the power block. This tritium was evaluated and attributed to rain-washout of gaseous tritium exiting the plant vent system via an approved isotopic-effluents discharge path. No groundwater tritium was attributed to DCPP system leaks or spills. It should 1

also be noted that studies of the DCPP site groundwater gradient indicated that any subsurface groundwater flow beneath the DCPP power block was not used as a source of drinking water. Due to topography and site characteristics, this groundwater gradient flow discharged into the Pacific Ocean which is approximately 100 yards from the power block.

An Old Steam Generator Storage Facility (OSGSF) long term storage vault was constructed within the DCPP site boundary in 2007 for storage of eight retired DCPP steam generators and two retired DCPP reactor heads. This OSGSF did not cause any changes to the ambient direct radiation levels within the DCPP environs during 2021. The OSGSF in-building sumps were inspected quarterly by REMP personnel.

The results of the 2021 REMP showed no unusual environmental isotopic findings from DCPP site operations. These results were compared to DCPP preoperational isotopic data and showed no unusual trends. Diablo Canyon site operations had no significant impact on the health and safety of the public or the environment.

Northwest of DCPP along the coast 2

2 Introduction Natural background radiation is all around us, all the time. Naturally occurring sources of background radiation include cosmic radiation from space, terrestrial radiation from radioactive isotopes in the earth, naturally occurring radioactive isotopes in the food we eat, and naturally occurring isotopes in the air we breathe. The human body (each of us) contains natural radioactive isotopes such as radioactive carbon (C14) and radioactive potassium (K40). As a result, humans have been exposed to radiation since the dawn of man. Over the last 100 years, man has developed new radioactive materials and new machines that create additional sources of background radiation. These additional man-made background sources include radioactive materials used in medical diagnosis, medical treatment, consumer products, industrial processes, security devices, educational tools, research activities, warfare, and worker occupations. The National Council on Radiation Protection and Measurements (NCRP) estimates that the average person in the United States receives about 620 millirem (mrem) of radiation exposure each year from natural and man-made background radiation sources. For comparison, public exposure from nuclear power plant radioactive effluents is less than 1 mrem. This < 1 mrem annual exposure is equivalent to approximately 1 to 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of cosmic radiation exposure (0.5 mrem per hour) during a cross country airline flight.

The Radiological Environmental Monitoring Program (REMP) provides data on measurable levels of radiation and radioactive materials in the site environs. This program also evaluates the relationship between quantities of radioactive materials released from the plant and resultant doses to individuals from principal pathways of exposure. In this capacity, REMP provides a check on the effluent release program and dispersion modeling to ensure that concentrations in the environment radioactive effluents conform to the As Low As Reasonably Achievable (ALARA) design objectives of 10 CFR 50, Appendix I.

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The Annual Radiological Environmental Operating Report (AREOR) provides summaries of the environmental data from exposure pathways, interpretations of the data, and analyses of trend results.

Routinely monitored pathways include ingestion, inhalation, and direct radiation. Routes of exposure are based on site specific information such as receptor locations, receptor ages, distance and direction to release locations, and water usage around the plant. The site specific REMP program has been developed and maintained in accordance with NUREG-1301.

Diablo Canyon Power Plant (DCPP) consists of two Westinghouse pressurized water reactors (PWR) each producing approximately 1,100 megawatts electrical (MWe). Unit 1 began commercial operation on May 7, 1985 and Unit 2 began commercial operation on March 13, 1986. Operation of DCPP continues to have no detectable radiological impact offsite. Samples analyzed from the offsite sampling stations continue to show no radiological contribution from plant operations.

DCPP REMP sends replicate split samples of stations 7G1 vegetation (quarterly), 5F2 milk (monthly), 5S2 drinking water (monthly), DW1 drinking water (monthly), OUT seawater (monthly), DCM kelp (quarterly), DCM perch (quarterly), DCM rockfish (quarterly), and DCM ocean sediment (annually) to the California Department of Public Health - Radiologic Health Branch (CDPH-RHB) Laboratory as part of a California State split sampling program. These split samples are independently analyzed by the CDPH-RHB.

Other pathways independently monitored by the CDPH-RHB are quarterly direct radiation environmental TLD stations (MT1, 1A1, 1C1, 4D1, 5F3, 5S1, 7D1, 7C1, 7F1, and 8S2) and weekly air sampling particulate and I-131 (at stations 5F3 and 7D1).

The public can request access to these CDPH-RHB split sampling data results by emailing the CDPH at environmental.radiation@cdph.ca.gov.

This report and previous DCPP AREOR's can be found on the NRC website at:

www.nrc.gov > Nuclear Reactors > Operating Reactors > Reactor Safety Information Topics > Radioactive Effluent and Environmental Reports > Diablo Canyon 1 & 2 > Environmental Reports Whale in Diablo Cove 4

3 Program Design The Radiological Environmental Monitoring Program (REMP) for the Diablo Canyon Power Plant (DCPP) was designed with the following specific objectives in mind. These objectives continue to be in force, to varying degrees, throughout facility operation:

To provide an early indication of the appearance or accumulation of any radioactive material in the environment caused by facility operation. Preoperational data is also used in this comparison.

To provide assurance to regulatory agencies and the public that the station's environmental impact is known and within anticipated limits.

To provide standby monitoring capability for rapid assessment of risk to the public in the event of unanticipated or accidental releases of radioactive material from DCPP.

The environmental media selected are based on the critical dose pathways of the radionuclides from the environment to man. They include the following: direct radiation, air, water, fish, ocean sediment, and invertebrates. Supplemental samples such as algae, kelp, local agricultural crops, recreational beach sand, groundwater, meat, and milk are also collected. The sampling locations have been determined by land use, site meteorology, and local demographics. Guidance for this monitoring program is provided by the Radiological Assessment Branch Technical Position on Radiological Environmental Monitoring, Revision 1, November 1979 (NUREG-1301).

REMP samples were collected by DCPP REMP personnel and sent to General Engineering Labs (GEL) in Charleston, South Carolina for all isotopic analyses in 2021. Fish (except market fish) and ocean sediment samples were collected by contract divers of Tenera Environmental and given to DCPP REMP personnel for shipment to GEL. Market fish samples were collected by local commercial fishermen and then purchased by DCPP REMP personnel in one of two local fish markets for shipment to GEL. Environmental direct radiation analyses were conducted using thermo-luminescent dosimeters (TLD).

Environmental TLD analysis was conducted by Mirion Technologies in Oakridge, Tennessee.

Isotopic analysis results are classified as "detected" if the a posteriori analysis result is greater than the Minimum Detectable Concentration (MDC) value for that specific analysis. Detected concentrations (> MDC) of nuclear power plant related isotopes are highlighted with yellow-fill cell background in Section 12 for quick identification. Naturally occurring radioactive materials (NORM) are not highlighted (e.g. gross beta, Be-7, K-40, thorium, radium, radon, lead, etc).

Intertidal mussels at DCM 5

3.1 Monitoring Zones The REMP is designed to allow comparison of levels of radioactivity in samples from the areas possibly influenced by DCPP to levels found in areas not influenced by the facility operations. Areas with the potential to be influenced by facility operations are called "indicator" stations. Areas with sufficient distance from the plant that are not likely to be influenced by facility operations are called "control" stations. The distinction between the two zones is based on distance and relative direction from the site.

Analysis of survey data from the two zones aided in determination of site environmental influence.

Analysis from the two zones assisted in differentiation between radioactive releases and seasonal variations in the natural environmental background radioactivity.

3.2 Pathways and Descriptions of REMP Monitoring Regarding the descriptions and tables in the following subsections, deviations are permitted from the required sampling schedule if specimens are unobtainable due to circumstances such as hazardous conditions, seasonal unavailability, malfunction of automatic sampling equipment and other legitimate reasons. If specimens are unobtainable due to sampling equipment malfunction, effort shall be made to complete corrective action prior to the end of the next sampling period. All deviations from the sampling schedule shall be documented in the Annual Radiological Environmental Operating Report. It is recognized that, at times, it may not be possible or practicable to continue to obtain samples of the media of choice at the most desired location or time. In these instances, suitable specific alternative media and locations may be chosen for the particular pathway in question and appropriate substitutions made within 30 days in the Radiological Environmental Monitoring Program, and submitted in the next Annual Radioactive Effluent Release Report, including a revised figure(s) and table for the REMP reflecting the new location(s) with supporting information identifying the cause of the unavailability of samples for that pathway and justifying the section of the new location(s) for obtaining samples.

3.2.1 Direct Radiation Environmental TLD badge packets are distributed and collected from field stations by DCPP REMP personnel and then shipped to Mirion Technologies for processing on a quarterly basis. Control badges accompany the field badges during shipment and deployment to measure any non-station dose received during transit time periods.

Direct ambient radiation is measured at 32 stations near DCPP and at 8 stations near the DCPP ISFSI using Panasonic UD814 TLD type badges. The TLD badges have valid element correction factors (ECF),

are calibrated using a NIST-traceable cesium-137 source, annealed prior to placement, and sealed in watertight packaging. Three TLD badges are placed at each station and each badge contains 3 calcium sulfate phosphors for a total of 9 calcium sulfate phosphors at each station. The 9 phosphors are analyzed and then averaged to provide a single quarterly station reading. Transit process exposure is subtracted, and that single reading is converted into a microrem per hour (µrem/hour) dose rate dependent on the in-field exposure period. Then the µrem/hour dose rate is converted into millirem (mrem) per standard (91 day) quarter. This millirem result is reported as "Standard Quarter TLD Results" for each station in Table 5-1: 2021 Quarterly and Annual TLD Analysis.

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DCPP Environmental TLD "Standard Quarter TLD Results" are measurements of all environmental gamma radiation sources (cosmic, terrestrial, radon, man-made, etc.) at each station during the in-field deployment period. These all-inclusive exposure values were used to create the trend graphs in Table 5-1. ANSI/HPS N13.37-2014 methodology was used to report "Quarterly / Annual Investigation Level Dose" to quantify DCPP facility related exposure.

For Table 3-1, a thermoluminescent dosimeter (TLD) is considered to be one phosphor. There are normally three calcium sulfate phosphors in an environmental TLD BADGE. Film badges shall not be used as dosimeters for measuring direct radiation.

Table 3-1: Direct Radiation Monitoring Number of Representative Collection Required or Sampling Stations Type of Analysis Samples and Sample Frequency Supplemental Locations An inner ring of stations, 0S1, 0S2, WN1, 1S1, one in each terrestrial 2S1, 3S1, 4S1, 5S1, meteorological sector in Quarterly Gamma Dose Required 6S1, 7S1, 8S1, 9S1, the general area of the 8S2, 5S3, and MT1 SITE BOUNDARY; An outer ring of stations, one in each terrestrial 0B1, 1A1, 1C1, 2D1, meteorological sector in 3D1, 4C1, 5C1, 6D1, Quarterly Gamma Dose Required the 2.5 to 14 km range and 7C1 from the site; and One or two areas to serve 2F2, 4D1, 5F1 Quarterly Gamma Dose Required as control stations; and The balance of the stations to be placed in special 5F3, 7D1, 7D2, 7F1, and interest areas such as Quarterly Gamma Dose Required 7G2 population centers, nearby residences, or schools.

A minimum of four stations IS1, IS2, IS3, IS4, IS5, Quarterly Gamma Dose Required around the ISFSI IS6, IS7, IS8 3.2.2 Airborne Radioactivity Air particulate and radioiodine sampling are performed weekly at six indicator stations (MT1, 0S2, 1S1, 7D1, 8S1, and 8S2) and one control station (5F1).

Constant-flow air samplers (F&J model DF-1) are used to draw air through paper filters to collect air particulates (station matrix AP = Air Particulate) and through triethylenediamine (TEDA) impregnated charcoal cartridges to collect radioiodine (station matrix AC = Air Cartridge). The air sampling flow rate is conducted at approximately 2.55 cubic meters per hour. The air sampling collection filters are located approximately seven feet above the ground. The sample volumes were determined by F&J Corporation model DF-1 flow meters (corrected to standard temperature and pressure, STP) which are installed downstream of the sample filters.

7

DCPP air sampling station equipment At the end of the weekly sampling period, the particulate filter and TEDA charcoal cartridge are collected. All necessary data regarding the air volume readings, flow rate, sampler on/off time, date of collection, and sampler station location are recorded and submitted to GEL along with the filter samples for isotopic analysis. Approximately 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months after sampling (to allow for radon and thoron daughter decay), the particulate filter papers collected from the field are placed on individual planchets and counted for gross beta activity in a low background, thin window gas proportional counter.

Quarterly gamma spectroscopy isotopic analysis is performed on station composites of the approximate 13 filters to determine the activity concentration of gamma emitting isotopes. The quarterly composite sample time is reported at the midpoint of the quarter monitored. Due to the short half-life of Iodine-131, each station weekly TEDA impregnated charcoal cartridge is counted for gamma spectroscopy isotopic analysis to determine the radioiodine concentration.

Supplemental air Carbon-14 (station matrix AC14) sampling is performed weekly at stations 0S2 (northwest sector), 8S1 (southeast sector), and 5F1 (control station in San Luis Obispo). GEL and DCPP REMP worked together to develop a method for sampling environmental airborne inorganic C-14.

Inorganic C-14 (as CO2) is the primary exposure pathway to man via photosynthesis in plants. A constant flow air sampler is used to draw air through a solid phase carbon sensitive sorbent cartridge. The air sampler is set at a flow rate of 1 standard liter-per-minute. The air sample filter cartridge head is located approximately seven feet above the ground. At the end of the weekly sampling period, the filter cartridge is collected. All necessary data regarding the air volume, flow rate, sampler on/off time, date of collection, and sampler station location are recorded and submitted to GEL along with the sample filter for C-14 analysis.

At GEL, a suitable portion of the solid sorbent material is processed through a method utilizing wet oxidation to remove volatile CO2 from the media in a closed distillation system. Once removed from the media, C-14 as carbon dioxide is sparged through a dilute acid solution for trapping any tritium water present in the sample. After sparging through dilute acid, the CO2 is trapped in a sorbent solution which 8

is added to a liquid scintillation cocktail and finally counted in a liquid scintillation counter. It should be noted that C-14 results in Section 12 are reported in microcuries (µCi) per cubic meter. This method meets the following specifications:

Validated to retain 99.9% of inorganic C-14 in air

Validated at collection rates of approximately 1 liter-per-minute

Validated for a one-week total collection capacity

Accurate analysis of C-14 over a wide range of concentrations

Methodology free from interference by other radionuclides

Detection capability of approximately 8E-7 µCi per cubic meter Table 3-2: Airborne Radioiodine. Samples from > 4 stations:

Number of Representative Sampling Type of Required or Collection Frequency Samples and Sample Stations Analysis Supplemental Locations Three samples from close to Continuous sampler operation with the three SITE BOUNDARY 0S2, 8S1, sample collection weekly, or more I-131 analysis Required locations ( 0S2, 8S1, & MT1 ) and MT1 frequently if required by dust in different sectors. loading.

One sample from the vicinity Continuous sampler operation with of a community having the sample collection weekly, or more 7D1 I-131 analysis Required highest calculated annual frequently if required by dust average ground level D/Q. loading.

If food products are Continuous sampler operation with unavailable, additional air sample collection weekly, or more sampling will be done in the 1S1 & 8S2 I-131 analysis Required frequently if required by dust NNW (station 1S1) and SE loading.

(Station 8S2) sectors.

Continuous sampler operation with One sample from a control sample collection weekly, or more 5F1 I-131 analysis Required location. frequently if required by dust loading.

9

Table 3-3: Airborne Particulate 1. Samples from > 4 stations:

Number of Representative Sampling Collection Required or Type of Analysis Samples and Stations Frequency Supplemental Sample Locations Three samples from 0S2, 8S1, Continuous sampler Weekly gross beta radioactivity close to the three SITE and MT1 operation with sample analysis following filter change.

BOUNDARY locations collection weekly, or more Quarterly gamma isotopic 2 Required (0S2, 8S1, & MT1) in frequently if required by analysis of composite consisting different sectors. dust loading. of approx. 12 filters (by location).

One sample from the Continuous sampler Weekly gross beta radioactivity vicinity of a community operation with sample analysis following filter change.

having the highest 7D1 collection weekly, or more Quarterly gamma isotopic Required calculated annual frequently if required by analysis of composite consisting average ground level dust loading. of approx. 12 filters (by location).

D/Q.

If food products are Continuous sampler Weekly gross beta radioactivity unavailable, additional 1S1 & 8S2 operation with sample analysis following filter change.

air sampling will be done collection weekly, or more Quarterly gamma isotopic Required in the NNW (station frequently if required by analysis of composite consisting 1S1) and SE (Station dust loading. of approx. 12 filters (by location).

8S2) sectors.

Continuous sampler Weekly gross beta radioactivity operation with sample analysis following filter change.

One sample from a 5F1 collection weekly, or more Quarterly gamma isotopic Required control location.

frequently if required by analysis of composite consisting dust loading. of approx. 12 filters (by location).

Table 3-4: Airborne Carbon-14. Samples from 3 stations:

Number of Representative Sampling Collection Required or Type of Analysis Samples and Stations Frequency Supplemental Sample Locations One sample from each 0S2, 8S1 Continuous sampler of the NW and SE 5F1 (control) operation with sample sectors close to the collection weekly, or more C-14 analysis Supplemental site (0S2 and 8S1).

frequently if required by One sample used as a dust loading.

control station (5F1).

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

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

10

3.2.3 Waterborne Water samples (drinking water, surface water, monitor wells, and groundwater) are collected at the frequencies shown in Table 3-5 through Table 3-7. Ocean surface water samples are collected at Diablo Cove (DCM), Rattlesnake Canyon (7C2), and at the plant Outfall (OUT). Drinking water samples are collected from Diablo Creek Weir (5S2), Diablo Creek Outlet (WN2), Blanchard Spring (1A2), and from the DCPP drinking water system (DW1). Drinking water is also collected from a control station located in San Luis Obispo at 4325 South Higuera Street, Offsite Emergency Lab (OEL).

Supplemental groundwater samples are collected from Water Well 02 (WW2) and DCSF96-1 (8S3).

Supplemental onsite monitoring well samples are collected from French-drain systems labeled Observation Well 01 (OW1) and Observation Well 02 (OW2). These shallow French drain well systems are near the facility power block structures and within the protected area.

Two onsite monitoring wells were installed in December 2011 as part of the industry Groundwater Protection Initiative (GPI). Isotopic sampling of these wells was initiated in 2012. These two onsite wells are downgradient of the power block and located along the west side of the power block. These two monitoring wells are labeled Groundwater Well 01 (GW1) and Groundwater Well 02 (GW2). After collection, the samples are securely sealed and labeled with sample type, station ID, date, time of collection, and person performing the collection, and sent to GEL for analysis.

Table 3-5: Surface Ocean Water Number of Representative Collection Required or Sampling Stations Type of Analysis Samples and Frequency Supplemental Sample Locations One sample from the plant Outfall, Diablo Monthly Gamma isotopic and Cove, and an area not OUT, DCM, and 7C2 Required (grab sample) tritium analysis.

influenced by plant discharge.

One sample from the plant Outfall, Diablo Gross Beta, Quarterly Cove, and an area not OUT, DCM, and 7C2 Total Sr 89/90, Fe-55, Supplemental (grab sample) influenced by plant and Ni-63 discharge.

11

Table 3-6: Drinking Water Number of Representative Collection Required or Sampling Stations Type of Analysis Samples and Frequency Supplemental Sample Locations One sample from the plant drinking water, one sample from DW1, 5S2, and Monthly Gamma isotopic, I-131, Diablo Creek Required OEL (control) (grab sample) and tritium analysis.

(upstream of plant),

and one control sample.

One sample from the plant drinking water, one sample from Gross Beta, DW1, 5S2, and Quarterly Diablo Creek Total Sr 89/90, Fe-55, Supplemental OEL (control) (grab sample)

(upstream of plant), and Ni-63 and one control sample.

One sample from Gamma isotopic, Diablo Creek Quarterly tritium, I-131, gross (downstream of plant) WN2 and 1A2 Supplemental (grab sample) beta, Total Sr 89/90, and one sample from Fe-55, and Ni-63 Blanchard Spring.

Table 3-7: Groundwater Number of Representative Collection Required or Sampling Stations Type of Analysis Samples and Frequency Supplemental Sample Locations One sample from wells Gamma isotopic Quarterly located under or OW1, OW2, GW1 and tritium, gross (grab sample, when Supplemental downgradient from the GW2 beta,Total Sr 89/90, available) plant power block. Fe-55, and Ni-63 One sample from a Gamma isotopic, Quarterly well located outside tritium, gross WW2, 8S3 (grab sample, when Supplemental the plant power block beta,Total Sr 89/90, available)

(control sample). Fe-55, and Ni-63 12

3.2.4 Marine Biological, Beach Sand, Ocean Sediment The REMP routinely collects samples of rockfish (genus Sebastes), perch (family Embiotocidae), intertidal mussels (genus Mytilus), and ocean sediment from indicator station DCM and control station 7C2. All other marine samples collected are considered supplemental. These supplemental marine samples include the following: intertidal algae, intertidal mussels, kelp, rockfish, perch, beach sand, and market fish. The intertidal samples are collected by DCPP personnel during low tide conditions. Kelp is collected quarterly by DCPP personnel from offshore kelp beds near the site.

Beach sand is collected by DCPP personnel between the high tide and low tide boundaries at nearby recreational beaches. In-shell mussels are sent to GEL where GEL personnel removed the meat &

internal organs for analysis. Quarterly samples of fish and annual samples of ocean sediments are collected from the site environs by contracted divers (TENERA Environmental). The Tenera divers fillet the fish and leave a small portion of skin for identification. Only edible portions (fish fillets) of the fish are analyzed.

Market Fish caught locally by commercial fishermen are purchased from two local fish markets (Avila Beach Pier-7D3 and Morro Bay-2F1). All samples are subject to unavailability due to seasonal fluctuations or unfavorable sampling conditions. Marine samples are immediately sealed in plastic containers upon collection. The samples are labeled with sample type, station ID, date, time of collection, and the individual who performed collection. Most samples are frozen (to prevent spoilage odor) before being shipped to GEL for analysis.

DCPP from Diablo Cove 13

Table 3-8: Marine Flora Number of Sampling Collection Required or Representative Samples Type of Analysis Stations Frequency Supplemental and Sample Locations DCM, PON, Quarterly One sample of kelp Gamma isotopic Supplemental POS, and 7C2 (when available)

Quarterly One sample of intertidal algae DCM and 7C2 Gamma isotopic Supplemental (when available)

Table 3-9: Fish and Invertebrates Number of Sampling Collection Required or Representative Samples Type of Analysis Stations Frequency Supplemental and Sample Locations One sample of rock fish (family Gamma isotopic analysis Quarterly Sebastes) and one sample of DCM and 7C2 on edible portions of each Required (grab sample) perch (family Embiotocidae) sample.

One sample of rock fish(family Gamma isotopic analysis Quarterly Sebastes) and one sample of PON and POS on edible portions of each Supplemental (grab sample) perch (family Embiotocidae) sample.

Gamma isotopic analysis One sample of mussel Quarterly DCM and 7C2 on edible portions of each Required (family Mytilus) (grab sample) sample.

Gamma isotopic analysis One sample of mussel Annual PON on edible portions of each Supplemental (family Mytilus) (grab sample) sample.

Gamma isotopic analysis One sample of mussel Quarterly POS on edible portions of each Supplemental (family Mytilus) (grab sample) sample.

7D3 OR 2F1 (should Gamma isotopic analysis One sample of locally harvested Quarterly alternate on edible portions of each Supplemental market fish. (grab sample) between sample.

locations)

Table 3-10: Ocean Sediment and Beach Sand Number of Sampling Collection Required or Representative Samples Type of Analysis Stations Frequency Supplemental and Sample Locations One sample of offshore ocean Annual sediment from Diablo Cove and DCM and 7C2 Gamma isotopic Required (grab sample)

Rattlesnake Canyon.

One sample of offshore ocean Annual Total Sr 89/90, Fe-55, and sediment from Diablo Cove and DCM and 7C2 Supplemental (grab sample) Ni-63 Rattlesnake Canyon.

AVA, MDO, One sample from each of five Semi- Annual Gamma isotopic, Total Sr PMO, CYA, and Supplemental local recreational beaches. (grab sample) 89/90, Fe-55, and Ni-63 CBA 14

3.2.5 Food Crops Broadleaf food vegetation is required to be collected at the nearest off-site locations of the highest calculated annual average ground level D/Q (deposition coefficient) within 5 miles of DCPP.

Unfortunately, there is no broadleaf food vegetation available that satisfies this requirement. Because these food products are unavailable, the DCPP REMP conducts additional weekly air sampling in the SE (station 8S2) and NNW (station 1S1) sectors.

Additional representative samples of food crops (in season) are collected monthly from supplemental stations: Cal Poly Farm (5F2), Kawaoka Farm in Arroyo Grande (7G1), Mello Farm (7C1) along the DCPP site access road, and quarterly from local gardens (3C1, 6C1, and 7E1). The vegetation samples at 5F2, 7G1, 7C1, 3C1, and 7E1 are collected by DCPP personnel and immediately sealed in plastic bags. The quarterly garden vegetation sample at 6C1 is provided by the land occupant (due to difficulty of property access and occupant requested privacy) to DCPP personnel.

Table 3-11: Broadleaf Vegetation 1 Number of Sampling Collection Required or Representative Samples Type of Analysis Stations Frequency Supplemental and Sample Locations Three samples of broadleaf vegetation grown nearest Gamma isotopic analysis off-site locations of highest Monthly (that includes I-131) on Required calculated annual average (when available) edible portion.

ground level D/Q IF milk sampling is not performed.

One sample of each of the similar broadleaf vegetation Gamma isotopic analysis Monthly grown 15 to 30 km distant in the (that includes I-131) on Required (when available) least prevalent wind direction IF edible portion.

milk sampling is not performed.

Table 3-12: Vegetative Crops Number of Sampling Collection Required or Representative Samples Type of Analysis Stations Frequency Supplemental and Sample Locations One sample of broadleaf Monthly Gamma isotopic analysis 5F2, 7C1, 7G1 Supplemental vegetation or vegetables or fruit (when available) on edible portion.

Quarterly One sample of broadleaf Gamma isotopic analysis 3C1, 6C1, 7E1 (as provided by land Supplemental vegetation or vegetables or fruit. on edible portion.

owner) 1 If broadleaf vegetation is unavailable, additional air sampling as specified in Table 3-2 and Table 3-3 will be done in the NNW (station 1S1) and SE (station 8S2) sectors.

15

3.2.6 Milk There are currently no animals within the 5 mile vicinity of the site utilized for milk consumption by humans. However, supplemental samples of cow milk are collected monthly from the Cal Poly Farm (5F2) which is approximately 13 miles from DCPP.

Three 1-gallon plastic containers of milk are collected each sampling period by DCPP personnel. Forty grams of sodium bisulfite preservative are added to each gallon of milk sample. The containers are sealed and shaken thoroughly to distribute the preservative. The containers are labeled with sample type, station ID, collection date, collection time, and the individual who performs collection. The samples are then express-shipped (due to the short half-life of I-131) to GEL for analysis.

Table 3-13: Milk Samples 1.

Number of Representative Sampling Collection Required or Type of Analysis Samples and Sample Locations Stations Frequency Supplemental Samples from milking animals in three locations within 5 km distance having the highest dose potential. If there are none, then one sample from milking animals in each of three areas between 5 to 8 km Semimonthly when distance where doses are calculated to animals are on Gamma isotopic and be greater than 1 mrem per year. One 5F2 Supplemental pasture; monthly at I-131 analysis.

sample from milking animals at a control other times.

location 15 to 30 km distant and in the least prevalent wind direction.

NOTE: The sample (5F2) should be taken monthly even if there are no indicator samples available.

3.2.7 Meat A rancher routinely grazes (free range, grass fed) cattle within three miles of the site boundary between the northwest clockwise to east sectors. This livestock meat will then be offered at local farmers markets and private distribution. Because it is possible for this vendor to provide an individual's sole source of annual meat consumption, this meat sampling is included in the REMP. REMP personnel obtain commercially packaged meat samples directly from the vendor. Gamma isotopic and total strontium-89/90 analyses are performed on the meat. The REMP station codes are BCM, BGM, and BSM.

Control station free range, grass fed meat samples are obtained from ranches outside the influence of DCPP. This meat is purchased by REMP personnel from local butcher shops and markets. The control station meat consists of Hearst Ranch ground beef which is located approximately 37 miles NNW of the 1

The Branch Technical Position (Nov 79) states, "Any location from which milk can no longer be obtained may be dropped from the surveillance program after notifying the NRC in writing that they are no longer obtainable at that location". Although milk sampling performed at 5F2 is outside the 5-mile radius and is supplemental to the REMP, this notification should take place if 5F2 milk sampling ceases.

16

DCPP site, and Templeton Hills ground beef which is located approximately 34 miles NNE of the site. The REMP station code is CCM (Control Cow Meat).

The meat is packaged by the livestock owners or commercial processors. The unopened packages are then placed into large over-pack zip-lock bags. Each bag is labeled with sample type, station ID, collection date, collection time, and the individual who performs the collection. The samples are then frozen and shipped to GEL for isotopic analysis.

Table 3-14: Meat Samples.

Number of Sampling Collection Required or Representative Samples Type of Analysis Stations Frequency Supplemental and Sample Locations One sample of each species BCM, BGM, Quarterly (cow, goat, sheep, deer, or pig) Gamma isotopic BSM, JDM, JPM, (as available and of edible meat portion analysis, and Total Sr Supplemental ACM, ADM, provided by landowners slaughtered for personal 89/90 on edible portion.

APM, CCM within 8 km of plant site) consumption (not mass market).

Ranchers near station 7C1 17

Table 3-15: Distances and directions to environmental monitoring stations.

Radial Radial Radial Distance Station Distance Station Name Direction** From Plant**

Code From Plant**

(Degrees) (km)

(miles) 0S1 Exclusion Fence-Northwest Corner 320 0.16 0.1 0S2 North Gate 320 0.8 0.5 1S1 Wastewater Pond 330 0.64 0.4 2S1 Back Road-300 m North of Plant 0 0.32 0.2 3S1 Road NW of 230 kV Switchyard 23 0.64 0.4 4S1 Back Road Between Switchyards 43 0.8 0.5 5S1 500 kV Switchyard 58 0.64 0.4 5S2 Diablo Creek Weir 65 0.96 0.6 5S3 Microwave Tower Road 70 1.02 0.7 6S1 Microwave Tower 94 0.8 0.5 7S1 Overlook Road 112 0.48 0.3 8S1 Target Range 125 0.8 0.5 8S2 Southwest Site Boundary 128 1.76 1.1 8S3 DCSF 96-1 (monitor well) 140 0.64 0.4 9S1 South Cove 167 0.64 0.4 MT1* Meteorological Tower 185 0.32 0.2 DCM* Diablo Cove Marine 249 0.44 0.27 WN1* Northwest Guard Shack 290 0.32 0.2 WN2* Diablo Creek Outlet 283 0.25 0.15 1A1 Crowbar Canyon 327 2.56 1.6 1A2 Blanchard Spring 331 2.4 1.5 0B1 Point Buchon 325 5.76 3.6 1C1 Montana de Oro Campground 336 7.52 4.7 3C1 Ranch Vegetation 20 7.16 4.5 4C1 Clark Valley Gravel Pit 45 9.28 5.8 5C1 Junction Prefumo/See Canyon Roads 64 7.52 4.7 6C1 Household Garden 98 7.24 4.5 7C1 Pecho Creek Ruins (Mello Farm) 120 6.56 4.1 7C2 Rattlesnake Canyon 124 7.52 4.7 2D1 Sunnyside School 10 11.04 6.9 3D1 Clark Valley 24 9.92 6.2 4D1 Los Osos Valley Road 36 12.16 7.6 6D1 Junction See/Davis Canyon Roads 89 13.4 8.3 7D1 Avila Gate 118 10.56 6.6 7D2 Avila Beach 110 12.16 7.6 7D3 Avila Pier 120 11.0 6.9 7E1 Avila Valley Barn 103 13.94 8.66 2F1 Morro Bay (Commercial Landing) 0 17.44 10.9 2F2 Morro Bay Power Plant 358 17.9 11.2 5F1 SLO OEL 79 16.41 10.2 5F2 Cal Poly Farm 60 20.16 12.6 18

Radial Radial Radial Distance Station Distance Station Name Direction** From Plant**

Code From Plant**

(Degrees) (km)

(miles) 5F3 SLO County Health Department 70 20.32 12.7 7F1 Shell Beach 110 17.28 10.8 7G1 Arroyo Grande (Kawaoka Farm) 115 26.88 16.8 7G2 Oceano Substation 118 27.68 17.3 AVA* Avila Beach (near pier) 109 11.75 7.3 CBA* Cambria Moonstone Beach 330 45.86 28.5 CYA* Cayucos Beach (near pier) 350 26.87 16.7 DY1* Drywell 115 77 0.041 0.026 DW1* Drinking Water (Plant Potable Water Sys) 161 0.59 0.37 GW1* Groundwater Monitoring Well 1 271 0.15 0.09 GW2* Groundwater Monitoring Well 2 195 0.21 0.13 IS1-IS8* ISFSI 59 0.38 0.23 MDO* Montana de Oro (Spooners Cove) 336 7.56 4.7 OW1* Observation Well 01 336 0.07 0.046 OW2* Observation Well 02 157 0.07 0.045 OEL* Offsite Emergency Lab 79 16.41 10.2 OUT* Plant Outfall 229 0.15 0.01 PMO* Pismo Beach (near pier) 113 20.76 12.9 PON* Pacific Ocean North of Diablo Cove 287 0.56 0.35 POS* Pacific Ocean South of Diablo Cove 176 0.7 0.44 WW2* Water Well 02 70 1.02 0.63 BCM* Blanchard (Farm) Cow Meat 320 1.94 1.2 BGM* Blanchard (Farm) Goat Meat 320 1.94 1.2 BSM* Blanchard (Farm) Sheep Meat 320 1.94 1.2 CCM* Control Cow Meat 328 59.5 37 JDM* Johe (Property) Deer Meat 21 5.24 3.26

Station does not follow the coding system

- The reference point used is the dome of Unit 1 containment Station Code (XYZ):

X - (0-9) represents the radial sector in which the station is located:

0 - Northwest 5 - East-northeast 1 - North-northwest 6 - East 2 - North 7 - East-southeast 3 - North-northeast 8 - Southeast 4 - Northeast 9 - South-southeast Y - (S, A-H) represents the distance from the plant:

S - On-site E 10 miles from plant A 2 miles from plant (but off-site) F 15 miles from plant B 4 miles from plant G 20 miles from plant C 6 miles from plant H - Greater than 20 miles from plant D 8 miles from plant Z - Represents the station number within the zone.

19

Table 3-16: Detection Capabilities for Environmental Sample Analysis 1 and Lower Limits of Detection 2 Airborne Food Fish Water Particulate Products Soil/Sediment Analysis (pCi/kg, Milk (pCi/L)

(pCi/L) or Gases (pCi/kg, (pCi/kg, dry) 3 wet)

(pCi/m3) wet)

Gross beta 4 0.01 H-3 400 4 11,000 Mn-54 15 130 150 Fe-59 30 260 300 Co-58 15 130 150 Co-60 15 130 150 Zn-65 30 260 300 Zr-95 30 300 Nb-95 15 150 I-131 15 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 60 600 La-140 15 15 150 1

The gamma emitters and corresponding LLD values listed are derived from standard ODCM guidance for environmental samples as found in NUREG-1301, Table 4.12-1. 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, are also analyzed and reported in the Annual Radiological Environmental Operating Report.

2 The LLD is defined, for purposes of these specifications, as the a priori analysis process that will yield a net count, above system background, that will be detected with 95 percent probability with only 5 percent probability of falsely concluding that a blank observation represents a "real" signal for the above concentration of radioactive material in a sample.

3 The gamma emitters LLD values listed for soil/sediment are derived from the Cs-134/137 10:1 ratio established in the environmental LLDs in NUREG-1301, Table 4.12-1.

4 If no drinking water pathway exists, a value of 3,000 pCi/L may be used for tritium. All groundwater wells should use the 400 pCi/L tritium value regardless of drinking water use.

5 The LLD value of 1 pCi/L for I-131 is applicable only to sources used as drinking water. If no drinking water pathway exists, a value of 15 pCi/L may be used for I-131.

20

Table 3-16 Notations For a particular measurement system, which may include radiochemical separation:

LLD = 4.66sb E x V x 2.22 x Y x exp(-t)

Where:

LLD = the "a priori" the lower limit of detection as defined above (as pCi per unit mass or volume)

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

E = the counting efficiency (as counts per transformation)

V = the sample size (in units of mass or volume) 2.22 = the number of transformations per minute per pico-curie Y = the fractional radiochemical yield (when applicable)

= the radioactive decay constant for the particular radionuclide t = the elapsed time between sample collection (or end of the sample collection period) and time of counting The value of Sb used in the calculation of the LLD for a detection system will 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 will include the typical contributions of other radionuclides normally present in the samples (e.g., potassium-40 in milk samples).

Analyses will be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally background fluctuations, unavoidably small sample sizes, the presence of interfering nuclides, or other uncontrollable circumstances may render these LLDs unachievable. In such cases, the contributing factors will be identified and described in the Annual Environmental Radiological Operating Report.

Typical values of E, V, Y and t should be used in the calculation. It should be recognized that the LLD is defined as an a priori limit representing the capability of a measurement system and not as the a posteriori limit for a particular measurement.

21

Table 3-17: Reporting Levels for Radioactivity Concentrations in Environmental Samples Airborne Fish Food Products Analysis Water (pCi/L) Particulate or Milk (pCi/L)

(pCi/kg, wet) (pCi/kg, wet)

Gases (pCi/m3)

H-3 20,000 1 Mn-54 1,000 30,000 Fe-59 400 10,000 Co-58 1,000 30,000 Co-60 300 10,000 Zn-65 300 20,000 Zr-Nb-95 400 I-131 22 0.9 3 100 Cs-134 30 10 1,000 60 1,000 Cs-137 50 20 2,000 70 2,000 Ba-La-140 200 300 1

For drinking water samples. This is the 40 CFR 141 value. If no drinking water pathway exists, a value of 30,000 pCi/L may be used.

2 If no drinking water pathway exists, a value of 20 pCi/L may be used.

Sea Lions on Lion Rock 22

NW Pacific Ocean SE

~

N I LEGEND 0 5 miles .A. Dosimetry Station D Air Particulate Station

Biological Sampling Station

Diablo Canyon Power Plant Units 1 and 2 Diablo Canyon off-site stations.

Figure 2: Diablo Canyon Off-site Stations.

23

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Figure 4: Relief map showing REMP stations 25

4 Radiological Data - Summary Tables This section provides tables that summarize the analytical results of the environmental samples collected over the entirety of the monitoring period. The results are presented in a format similar to that prescribed in the NRC's Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979 (NUREG-1301). Each table is sample matrix specific and the total numbers of analyses for each radionuclide are provided. Additionally, the number of measurements which exceeded the NRC Notification Reporting Levels found in Table 3-17 of this report are provided.

The a posteriori Minimum Detectable Concentration (MDC) listed for each analysis in Section 12 is used as the detection evaluation point for each sample collected. A sample was considered to yield a "detectable measurement" when the result concentration exceeded the associated MDC value for that analysis. The MDC was calculated by the laboratory with each analysis (a posteriori) and incorporated conditions observed at the laboratory during the analysis. The a posteriori MDC equation used by the environmental lab is the same as the a priori Lower Limit of Detection (LLD) equation specified in NUREG-1301.

Additionally, the tables provide the mean of all detectable sample results analyzed for the specified radionuclide/ media type, the range, and the total number of detectable samples of all the samples counted:

The mean value consists of the average of detectable concentrations.

The lowest and highest detected concentration values are listed as the range.

The number of detectable measurements along with the total number of measurements are listed. For example, (4/20) would indicate that 4 of the 20 samples collected (for that sample type and that radionuclide) contained detectable radioactivity.

The radionuclides reported in this section represent those that:

have an LLD requirement in Table 3-16, or a Reporting Level listed in Table 3-17

are of specific interest for any other reason For gamma isotopic analyses, the following radionuclides were analyzed for and reported if detected:

Ac-228 Bi-214 Cs-134 Nb-95 Ru-106 Ag-108m Ce-141 Cs-137 Pb-210 Sb-124 Ag-110m Ce-144 Fe-59 Pb-212 Sb-125 Am-241 Co-57 I-131 Pb-214 Th-234 Ba-140 Co-58 K-40 Ra-224 Tl-208 Be-7 Co-60 La-140 Ra-226 Zn-65 Bi-212 Cr-51 Mn-54 Ru-103 Zr-95 26

Table 4-1: Direct Radiation Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Direct Radiation (mrem/std qtr)

Report Period: 1/1/21 - 12/31/21 Lower Limit Indicator with of Highest Annual Mean Number of Type and Total Number of Detection(A) Name, Distance, and Direction All Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Direct Radiation

( mrem/std quarter ) See Table 2.2 2F2, 4D1, 5F1 Env TLD Badges (C)

( 384 ) 6 mrem/qtr None Detected (0 / 348) None Detected (0 / 348) None Detected (0 / 36) 0 IS4, 0.3 mi, 65° IS1 - IS8 ISFSI TLDs( D ) ( 96 ) 6 mrem/qtr 78.7; 75.1 - 82.5 (12 / 12) 33.9; 16.3 - 82.5 (60 / 96) N/A 0 Table Notation:

( A ) Sensitivity of TLD system using ANSI/HPS N13.37-2014 methodology

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed exposure above historical background and the TLD sensitivity.

( C ) 96 Env TLD badges are distributed quarterly at 32 locations (29 indicator stations and 3 control stations). Each quarter there are 3 badges exposed per station.

( D ) 24 ISFSI Env TLD badges distributed quarterly at 8 locations surrounding the ISFSI protected area and within the site boundary. Each quarter 3 badges exposed per station.

27

Table 4-2: Airborne Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled: Airborne Report Period: 1/1/21 - 12/31/21 Lower Type and Total Limit of Indicator with Highest Annual Mean Number of Number of Detection( Name, Distance, and Direction All Indicator Locations All Control Locations Reportable Analyses Performed A)

(LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Iodine (364)

I-131 (pCi/m3) 0.07 None Detected (0/312) None Detected (0/312) None Detected (0/52) 0 Air Particulates (364) 7D1, 6.6 mi, 118° 0S2, 1S1, 7D1, 8S1, 8S2, MT1 5F1, 10.2 mi, 79° Gross Beta (pCi//m3) 0.01 1.94E-2; 3.37E-3 to 7.57E-2 (52/52) 1.83E-2; 2.30E-3 to 9.14E-2 (312/312) 2.18E-2; 6.41E-3 to 8.58E-2 (52/52) 0 Gamma Isotopic (C ) (28)

Cs-134 (pCi/m3) 0.05 None Detected (0/24) None Detected (0/24) None Detected (0/4) 0 Cs-137 (pCi/m3) 0.06 None Detected (0/24) None Detected (0/24) None Detected (0/4) 0 Air Carbon-14 (156) 8S1, 0.5 mi, 125° 0S2, 8S1 5F1 Carbon-14 (µCi/m3) 1.00E-06 2.07E-7; 2.07E-7 (1/52) 2.07E-7; 2.07E-7 (1/104) None Detected (0/52) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

( C ) These gamma isotopic samples are quarterly composite samples of all weekly particulate air sample filters. Approximately 13 particulate filters for each REMP location.

Plant related radionuclides, not naturally occurring isotopes.

28

Table 4-3: Surface Water Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Surface Water (pCi/Liter)

Report Period: 1/1/21 - 12/31/21 Lower Limit Type and Total of Location with Highest Annual Mean Number of Number of Analyses Detection(A) Name, Distance, and All Indicator Locations All Control Locations Reportable Performed (LLD) Direction I Mean( B), Range( B ) Mean ( B ), Range ( B ) Mean ( B ), Range ( B ) Occurrences Gamma Isotopic ( 37 ) 1A2, 5S2, DW1, WN2 OEL, 10.2 mi, 79° Mn-54 15 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Fe-59 30 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Co-58 15 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Co-60 15 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Zn-65 30 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Zr-95 30 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Nb-95 15 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 I-131 15 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Cs-134 15 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Cs-137 18 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Ba-140 60 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 La 140 15 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Additional Analysis ( 37 )

Gross Beta 100 DCM, 0.27 mi, 249° I 353, 146-1560 (12/12) 348, 146-1560 ( 24/24 ) 267, 198-371 ( 13/13 ) 0 Fe-55 200 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Ni-63 50 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Tritium H-3 400 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Total Sr 89/90 10 none detected ( 0 / 24 ) none detected ( 0 / 24 ) none detected ( 0 / 13 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

29

Table 4-4: Drinking Water Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Drinking Water (pCi/Liter)

Report Period: 1/1/21 - 12/31/21 Lower Type and Total Limit of Location with Highest Annual Mean Number of Number of Detection(A) Name, Distance, and All Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Direction I Mean( B), Range( B ) Mean ( B ), Range ( B ) Mean ( B ), Range ( B ) Occurrences Gamma Isotopic ( 44 ) 1A2, 5S2, DW1, WN2 OEL, 10.2 mi, 79° Mn-54 15 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Fe-59 30 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Co-58 15 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Co-60 15 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Zn-65 30 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Zr-95 30 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Nb-95 15 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 I-131 1 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Cs-134 15 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Cs-137 18 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Ba-140 60 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 La 140 15 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Additional Analysis ( 44 )

Gross Beta 4 1A2, 1.5 mi, 331° I 5.92, 1.57-10.0 ( 3/4 ) 4.95, 1.57-10.0 ( 11/32 ) 1.85, 1.25-2.73 ( 9/12 ) 0 Fe-55 200 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Ni-63 50 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Tritium H-3 400 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 12 ) 0 Total Sr 89/90 2 DW1, 0.37 mi, 161° I 1.01 ( 1/12 ) 1.01 ( 1/32 ) none detected ( 0 / 12 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

30

Table 4-5: Mussels Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Mussels (pCi/kg)

Report Period: 1/1/21 - 12/31/21 Type and Total Lower Limit Indicator with Number of of Highest Annual Mean Number of Analyses Detection(A) Name, Distance, and Direction All Indicator Locations All Control Locations Reportable Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic (13) DCM, PON, POS 7C2, 4.7 mi, 124° Mn-54 130 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Fe-59 260 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Co-58 130 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Co-60 130 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Zn-65 260 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Zr-95 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Nb-95 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 I-131 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Cs-134 130 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Cs-137 150 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Ba-140 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 La-140 none detected (0/9 ) none detected ( 0 / 9 ) none detected ( 0 / 4 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

31

Table 4-6: Fish Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Fish (pCi/kg)

Report Period: 1/1/21 - 12/31/21 Lower Indicator with Type and Total Limit of Highest Annual Mean Number of Number of Detection(A) Name, Distance, and Direction All Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic ( 46 ) DCM, PON, POS 7C2, 2F1, 7D3 Mn-54 130 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Fe-59 260 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Co-58 130 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Co-60 130 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Zn-65 260 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Zr-95 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Nb-95 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 I-131 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Cs-134 130 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Cs-137 150 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Ba-140 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 La-140 none detected ( 0 / 32 ) none detected ( 0 / 32 ) none detected ( 0 / 14 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

32

Table 4-7: Algae Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Algae* (pCi/kg)

Report Period: 1/1/21 - 12/31/21 Lower Limit Indicator with Type and Total of Highest Annual Mean Number of Number of Detection(A) Name, Distance, and Direction Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic ( 4 ) DCM, 0.27 miles, 249° 7C2, 4.7 miles, 124° Mn-54 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Fe-59 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Co-58 80 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Co-60 80 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Zn-65 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Zr-95 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Nb-95 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 I-131 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Cs-134 60 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Cs-137 80 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Ba-140 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 La-140 no algae available to sample no algae available to sample none detected ( 0 / 4 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g., (10/12) means 10 samples out of 12 collected showed activity.

These samples are supplemental samples.

33

Table 4-8: Kelp Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Kelp* (pCi/kg)

Report Period: 1/1/21 - 12/31/21 Lower Limit Indicator with Type and Total of Highest Annual Mean Number of Number of Analyses Detection(A) Name, Distance, and Direction All Indicator Locations All Control Locations Reportable Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic ( 16 ) DCM, PON, POS 7C2, 4.7 mi, 124° Mn-54 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Fe-59 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Co-58 80 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Co-60 80 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Zn-65 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Zr-95 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Nb-95 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 I-131 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Cs-134 60 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Cs-137 80 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Ba-140 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 La-140 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

These samples are supplemental samples.

34

Table 4-9: Vegetative Crops Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Vegetative Crops (pCi/kg)

Report Period: 1/1/21 - 12/31/21 Lower Limit Type and Total of Indicator with Highest Annual Mean Number of Number of Detection(A) Name, Distance, and Direction All Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic ( 52 ) 3C1, 5F2, 6C1, 7C1, 7E1 7G1, 16.8 mi, 115° Mn-54 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Fe-59 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Co-58 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Co-60 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Zn-65 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Zr-95 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Nb-95 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 I-131 60 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Cs-134 60 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Cs-137 80 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Ba-140 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 La-140 None Detected ( 0 / 40 ) None Detected ( 0 / 40 ) None Detected ( 0 / 12 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

35

Table 4-10: Milk Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Milk (pCi/L)

Report Period: 1/1/21 - 12/31/21 Lower Indicator with Highest Annual Type and Total Limit of Mean Name, Distance, and Number of Number of Detection(A) Direction Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Iodine extraction ( 12 ) 5F2, 12.6 mi, 60° I-131 1 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Gamma Isotopic ( 12 )

Mn-54 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Fe-59 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Co-58 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Co-60 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Zn-65 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Zr-95 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Nb-95 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Cs-134 15 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Cs-137 18 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Ba-140 60 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 La-140 15 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Total Sr 89/90 ( 12 ) 2 Not Applicable Not Applicable None Detected ( 0 / 12 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

36

Table 4-11: Meat Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Meat (pCi/kg)

Report Period: 1/1/21 - 12/31/21 Lower Limit Type and Total of Indicator with Highest Annual Mean Number of Number of Detection(A) Name, Distance, and Direction All Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic ( 8 ) BCM, 1.5 mi, 331° CCM, 37 mi, 328° Mn-54 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Fe-59 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Co-58 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Co-60 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Zn-65 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Zr-95 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Nb-95 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 I-131 60 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Cs-134 60 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Cs-137 80 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Ba-140 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 La-140 none detected (0/3) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Total Sr 89/90 ( 8 ) 500 none detected ( 0 / 3 ) none detected ( 0 / 3 ) none detected ( 0 / 5 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis, e.g. (10/12) means 10 samples out of 12 collected showed activity.

37

Table 4-12: Ocean Sediment Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Ocean Sediment (pCi/kg)

Report Period: 1/1/21 - 12/31/21 Lower Limit Type and Total of Indicator with Highest Annual Mean Number of Number of Detection(A) Name, Distance, and Direction Indicator Locations Control Locations Reportable Analyses Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic ( 2 ) DCM, 0.27 mi, 249° 7C2, 4.7 mi, 124° Mn-54 150 none detected ( 0 / 1 ) none detected ( 0 / 1 ) none detected ( 0 / 1 ) 0 Fe-59 300 none detected (0/1) none detected (0/1) none detected (0/1) 0 Co-58 150 none detected (0/1) none detected (0/1) none detected (0/1) 0 Co-60 150 none detected (0/1) none detected (0/1) none detected (0/1) 0 Zn-65 300 none detected (0/1) none detected (0/1) none detected (0/1) 0 Zr-95 300 none detected (0/1) none detected (0/1) none detected (0/1) 0 Nb-95 150 none detected (0/1) none detected (0/1) none detected (0/1) 0 I-131 none detected (0/1) none detected (0/1) none detected (0/1) 0 Cs-134 150 none detected (0/1) none detected (0/1) none detected (0/1) 0 Cs-137 180 none detected (0/1) none detected (0/1) none detected (0/1) 0 Ba-140 600 none detected (0/1) none detected (0/1) none detected (0/1) 0 La-140 150 none detected (0/1) none detected (0/1) none detected (0/1) 0 Fe-55 ( 2 ) 20,000 none detected ( 0 / 1 ) none detected ( 0 / 1 ) none detected ( 0 / 1 ) 0 Ni-63 ( 2 ) 4,000 none detected ( 0 / 1 ) none detected ( 0 / 1 ) none detected ( 0 / 1 ) 0 Total Sr 89/90 ( 2 ) 2,000 none detected ( 0 / 1 ) none detected ( 0 / 1 ) none detected ( 0 / 1 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

38

Table 4-13: Beach Sand Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Beach Sand (pCi/kg dry)

Report Period: 1/1/21 - 12/31/21 Lower Limit Indicator with Highest Annual Type and Total of Mean, Name, Distance, and Number of Number of Analyses Detection(A) Direction All Indicator Locations All Control Locations Reportable Performed (LLD) Mean( B) Range( B ) Mean ( B ) Range ( B ) Mean ( B ) Range ( B ) Occurrences Gamma Isotopic ( 10 ) AVA, MDO, PMO, CYA CBA, 28.5 mi, 330° Mn-54 150 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Fe-59 300 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Co-58 150 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Co-60 150 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Zn-65 300 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Zr-95 300 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Nb-95 150 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 I-131 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Cs-134 150 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Cs-137 180 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Ba-140 600 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 La-140 150 none detected (0/8) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Fe-55 ( 10 ) 20,000 none detected ( 0 / 8 ) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Ni-63 ( 10 ) 4,000 none detected ( 0 / 8 ) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Total Sr 89/90 ( 10 ) 2,000 none detected ( 0 / 8 ) none detected ( 0 / 8 ) none detected ( 0 / 2 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

39

Table 4-14: Groundwater Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Groundwater (pCi/L)

Lower Limit Type and Total of Location with Highest Annual Mean Number of Number of Detection(A) Name, Distance, and All Indicator Locations All Control Locations Reportable Analyses Performed (LLD) Direction I Mean( B), Range( B ) Mean ( B ), Range ( B ) Mean ( B ), Range ( B ) Occurrences Gamma Isotopic ( 8 ) 8S3, 0.4 mi, 140° WW2, 0.63 mi, 70° Mn-54 15 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Fe-59 30 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Co-58 15 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Co-60 15 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Zn-65 30 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Zr-95 30 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Nb-95 15 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 I-131 15 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Cs-134 15 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Cs-137 18 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Ba-140 60 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 La 140 15 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Additional Analysis ( 8 )

Gross Beta 4 8S3, 0.4 mi, 140° I 5.54, 3.25-8.56 ( 4/4 ) 5.54, 3.25-8.56 ( 4/4 ) 5.77, 3.10-8.24 ( 3/4 ) 0 Fe-55 200 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Ni-63 50 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Tritium H-3 400 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Total Sr 89/90 2 none detected (0/4) none detected ( 0 / 4 ) none detected ( 0 / 4 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

40

Table 4-15: Monitoring Wells Name of Facility: Diablo Canyon Power Plant Location: San Luis Obispo County, California Medium or Pathway Sampled (Unit of Measure): Monitoring Wells (pCi/L)

Report Period: 1/1/21 - 12/31/21 Type and Total Lower Limit Number of of Location with Highest Annual Mean Number of Analyses Detection(A) Name, Distance, and All Indicator Locations All Control Locations Reportable Performed (LLD) Direction I Mean( B), Range( B ) Mean ( B ), Range ( B ) Mean ( B ), Range ( B ) Occurrences Gamma Isotopic

( 16 ) GW1, GW2, OW1, OW2 WW2, 0.63 mi, 70° Mn-54 15 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Fe-59 30 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Co-58 15 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Co-60 15 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Zn-65 30 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Zr-95 30 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Nb-95 15 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 I-131 15 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Cs-134 15 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Cs-137 18 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Ba-140 60 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 La 140 15 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Additional Analysis ( 16 )

Gross Beta 4 GW1, 0.9 mi, 271° I 15.2, 8.63-21.1 ( 4/4 ) 12.3, 6.38-21.1 ( 10/12 ) 5.77, 3.10-8.24 ( 3/4 ) 0 Fe-55 200 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Ni-63 50 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Total Sr 89/90 2 none detected ( 0 / 12 ) none detected ( 0 / 12 ) none detected ( 0 / 4 ) 0 Tritium H-3 400 OW1, 0.046 mi, 336° I 612, 480-887 ( 4/4 ) 612, 480-887 ( 4/12 ) none detected ( 0 / 4 ) 0 Table Notation:

( A ) Unless specified, all required LLDs were met in accordance with Table 2.3

( B ) Mean and range based upon detectable measurements only. Fraction of detectable measurements at specified locations is indicated in parenthesis e.g. , (10/12) means 10 samples out of 12 collected showed activity.

41

Station PON 5 Analysis of Environmental Results 5.1 REMP Sampling Variance/Deviations The DCPP Radiological Environmental Monitoring Program (REMP) allows for deviations in sampling "if samples are unobtainable due to hazardous conditions, seasonal unavailability, or malfunction of sampling equipment." Such deviations do not compromise the program's effectiveness as some deviations are anticipated in any radiological environmental monitoring program. The program includes both required and supplemental samples. This section will describe the variances/deviations for samples taken in 2021.

5.1.1 Direct Radiation The last ISFSI campaign occurred during the third quarter of 2018 (3Q18). During that period, the ISFSI projects team added 9 spent fuel dry casks onto the DCPP ISFSI pad. This contributed to increases in station IS-3 through IS-7 exposures subsequent to that time frame. Since then, no additional casks have been added. As a result, 2021 exposures for all DCPP ISFSI environmental stations were consistent with those for the previous year.

During the review of 3rd quarter 2021 environmental TLD results by RP engineering, it was noted that there were no results for station 7C1 sent back from the TLD vendor. Further investigation resulted in the discovery that the 3rd quarter environmental TLDs were left in the TLD stanchion during 4th quarter.

Labeling issues made it possible for human error during the change out. The 3rd quarter TLD was 42

removed during 1st quarter (2022) changeout and processed normally. The accumulated dose was normalized to the standard 91-day quarterly dose without issue. (SAPN 51138595)

A damaged TLD stanchion was discovered on 12/15/2021 at the 5S1 location (500 kV switchyard). It is presumed that the damage occurred during a heavy storm from 12/12/21 to 12/13/21 and discovered days later. It was found by an RP Engineer while performing other routine work that involves driving past its location on a weekly basis and was seen intact the previous week. It appeared that some equipment located adjacent to the stanchion had blown over and caused the damage. The TLDs inside the housing at the top of the stanchion were intact in their double plastic sleeving and free of moisture intrusion, and the suboptimal positioning for a couple days would not have affected the TLD results.

(SAPN 51138596)

During a review of the 4th QTR. Environmental TLD result spreadsheet from Mirion there were six TLDs missing in the report:

Location TLD Number 5S1 B DCPP 1401483 8S2 B DCPP 8214738 7G2 B DCPP 8702136 4S1 B DCPP 8883127 DCPP CONTROLS B DCPP 8703736 T20 HB ISFSI A HB 8702150 The Mirion report was received 03/01/2022 which had a NOTE_CODE of "DAMAGED" on the TLDS listed above. Each location has a total of three TLDs so the remaining two TLDs from these locations were used to calculate the dose results. (SAPN 51142727) 5.1.2 Airborne Radioactivity The 2021 mean percent availability for on-site and off-site particulate and iodine (P&I) air samplers was 99.9 percent. In other words, P&I air samplers were running 99.9 percent of the time. Less than 0.1 percent of run time could be attributed to equipment problems, filter exchanges, or calibration processes. If an individual air sample station's loss of run time exceeds 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months in a one-week period, a SAPN must be written to record the event per RCP EM-2. There was one REMP air sampler loss of run time event in 2021. For the week of 6/2/2021- 6/9/2021 a power outage occurred at the West Met Tower for maintenance causing a loss of power at station MT1 for approximately 15 hours1.736111e-4 days 0.00417 hours 2.480159e-5 weeks 5.7075e-6 months (SAPN 51122252). This minimally effected the overall run time for that station.

Actual 2021 percent availabilities for each station are as follows:

0S2 = 100 %

1S1 = 100 %

5F1 = 100 %

7D1 = 99.8 %

8S1 = 100 %

8S2 = 100 %

MT1 = 99.7 %

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General Engineering Labs and DCPP REMP personnel worked together to develop a method for sampling inorganic environmental airborne C-14 (as CO2). Airborne C-14 supplemental sampling was performed weekly at stations 8S1 (SE Sector), 0S2 (NW Sector), and 5F1 (control station in San Luis Obispo) in 2021.

It should be noted that while all other air sample analyses are reported in units of pCi/m3, C-14 lab data are reported in units of µCi/m3 within Section 12.

GEL has monitored C-14 samples from various locations around the US. In some instances, a very slight negative bias has been observed in annual data sets. The bias was not enough to mask any true positive detection of C-14. GEL believes this bias may be the result of the sorbent picking up other chemical species in the field during the week-long collection. These chemical species (possibly SO2 or NO2) could cause some quenching effects in the liquid scintillation analysis and varies by site location. This chemical interference created a net effect where some field cartridges were slightly lower in activity than laboratory blanks. The bias was less than the average two sigma method uncertainty and significantly less than the method average detection limit.

5.1.3 Marine Samples DCM supplemental quarterly intertidal algae samples were unavailable during all of 2021. All remaining 2021 marine samples were collected as scheduled (including allowable variation).

In the past, the sampling of abalone was a supplemental sample to the REMP. The California Department of Fish and Game has since issued regulations prohibiting the collection of abalone along the central and southern coast of California. PG&E considers it unlikely that future collection of abalone will be allowed within the DCPP environs. The REMP has therefore ceased routine abalone sampling.

5.1.1 Terrestrial Samples Supplemental Blanchard Sheep Meat (BSM) and Blanchard Goat Meat (BGM) were not available and were not provided by the rancher during all of 2021. Blanchard sheep and goats were not within 5 miles of the DCPP site in 2021. All other 2021 terrestrial samples were collected as scheduled (including allowable variation).

5.1.2 Surface Water, Drinking Water, and Groundwater Shallow French drain DY1 quarterly sampling was removed from the ODCM in 2019 due to known collection of rain washout tritium coming from a monitored pathway that is already accounted for by the DCPP Radiological Effluent Controls Program. This is discussed in RIS2008-003. DY1, which is located inside the Radiological Controls Area, is pumped down annually to the DCPP Liquid Radwaste System after the rainy season and is sampled during pump down. The DY1 sample results are reported in Section 12 GEL Sample Results. Observation Well 02 (OW2) was dry and not collected during all four quarters of 2021. All remaining 2021 water samples were collected as scheduled (including allowable variation).

44

5.1.3 Replicate Samples Replicate sampling is conducted within the REMP for program strength and quality. A replicate sample is an additional sample (same matrix type and station) taken independently from the original scheduled REMP sample. The replicate sample collection is performed by a different person and shipped to GEL to ensure independent analysis result correlation and method consistency.

Replicate samples were taken from:

CBA - Cambria Beach Sand (2/10/21)

7C2 - Rattlesnake Canyon Seawater (5/5/21)

The results of the replicate analyses were within expected correlation of routine sampling.

View of DCPP looking south 5.2 Comparison of Achieved LLDs With Requirements For each analysis having a Lower Limit of Detection (LLD) requirement, criteria and process procedures were in place to achieve the calculated a priori LLD. Meeting those criteria satisfies the a priori LLD requirements. The a posteriori Minimum Detectable Concentration (MDC) for that analysis was also compared with the required a priori LLD. Table 3-16 of this report lists the required a priori LLDs for environmental sample analyses required by the DCPP Radiological Environmental Monitoring Program.

All required samples in 2021 met their LLD requirements.

45

5.3 Comparison of Results Against REMP Reporting Levels NRC notification is required whenever a Reporting Level listed in Table 3-17 of this report is exceeded.

Reporting Levels are the environmental concentrations that relate to the ALARA design dose objectives of 10 CFR 50, Appendix I. It should be noted that environmental isotopic concentrations were averaged over the calendar quarter for the purposes of this comparison, and that Reporting Levels applied only to DCPP plant related effluent radioactivity. No REMP NRC Reporting Levels were exceeded during the 2021 monitoring period.

5.4 Data Analysis by Media Type The REMP data for each media type is discussed in this section. A sample was considered to yield a detectable measurement when the resultant concentration exceeded the MDC for that analysis.

5.4.1 Direct Radiation (Environmental TLDs)

Direct radiation was continuously measured at 32 locations surrounding DCPP using Panasonic UD-814 type thermo-luminescent dosimeters (TLDs). The 32 locations include 29 indicator stations and 3 control stations. Environmental (Env) TLD station dosimeters were distributed and collected every calendar quarter for processing. Methodology from ANSI/HPS N13.37-2014 "Environmental Dosimetry - Criteria for System Design and Implementation" was used to evaluate and report the Env TLD data. Historical background baseline values for each station were established using 2004 to 2014 Env TLD data.

DCPP "Standard Quarter TLD Results" are measurements of all environmental gamma radiation sources (cosmic, terrestrial, radon, and man-made) at each station during the deployment period. Transient and lab storage background dose contributions were subtracted prior to reporting the "Standard (Std)

Quarter (Qtr) TLD Results". Technically, these TLDs read out in units of milliroentgen. Because gamma radiation has a quality factor of approximately 1 for conversion from milliroentgen to millirem, the environmental TLD unit of reporting was converted to millirem (mrem) for consistency of unit reporting and ease of exposure communications.

An evaluation of direct radiation measurements and member of public occupancy times within the site boundary indicated all federal criteria for member-of-public dose limits (10CFR20.1301) were conservatively met. An evaluation of direct radiation measurements indicated all federal EPA 40CFR190 criteria were conservatively met. Comparing data from the 2021 DCPP Annual Radiological Effluent Release Report (ARERR), dose to a member-of-public resulting from gaseous effluent releases at DCPP was an extremely small fraction of annual Env TLD background dose. Therefore, it was concluded that gaseous effluents from DCPP had negligible impact on site related measured Env TLD values.

46

Table 5-1: 2021 Quarterly and Annual TLD Analysis 2021 Quarterly REMP Env TLD Analysis 2021 Annual REMP Env TLD Analysis Historical 2021 Standard Quarter 2021 Quarterly Investigation Level Historical 2021 Annual 2021 Annual DCPP Distance Quarterly Baseline TLD Results (mrem) Dose (mrem) Annual Baseline TLD Result Investigation Level Station ID in miles (mrem) Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 (mrem) (mrem) Dose (mrem)

MT1 0.2 21.5 18.0 17.3 18.2 19.2 ND ND ND ND 86.0 72.7 ND WN1 0.2 12.7 11.6 10.8 11.5 12.0 ND ND ND ND 50.8 45.8 ND 0S1 0.1 20.7 21.3 18.2 19.2 20.7 ND ND ND ND 82.8 79.3 ND 5S1 0.4 23.1 21.2 20.4 21.1 21.7 ND ND ND ND 92.4 84.5 ND 6S1 0.5 14.0 13.9 12.2 12.9 13.8 ND ND ND ND 56.0 52.8 ND 8S1 0.5 17.1 15.7 15.1 15.2 16.5 ND ND ND ND 68.4 62.5 ND 8S2 1.1 21.0 19.6 20.2 18.6 21.0 ND ND ND ND 84.0 79.4 ND 5S3 0.7 19.2 17.4 16.9 17.0 18.5 ND ND ND ND 76.8 69.8 ND 2F2 11.2 14.1 13.4 12.2 12.5 12.9 ND ND ND ND 56.4 50.9 ND 2D1 6.9 12.8 12.8 11.3 11.9 12.3 ND ND ND ND 51.6 48.3 ND 4D1 7.6 11.9 11.3 10.1 10.3 10.4 ND ND ND ND 47.6 42.1 ND 5F1 10.2 17.5 15.7 15.8 16.4 16.9 ND ND ND ND 70.0 64.8 ND 1A1 1.6 12.0 11.8 11.2 12.1 12.3 ND ND ND ND 48.0 47.4 ND 7D2 7.6 16.6 14.9 14.4 14.6 16.4 ND ND ND ND 66.4 60.4 ND 7G2 17.3 17.6 18.0 16.6 16.8 18.8 ND ND ND ND 70.4 70.3 ND 7C1 4.1 18.1 17.0 16.3 16.5 16.5 ND ND ND ND 72.4 66.3 ND 7F1 10.8 17.1 15.6 15.1 15.8 16.7 ND ND ND ND 68.4 63.2 ND 0B1 3.6 10.2 10.6 9.2 9.6 10.8 ND ND ND ND 40.8 40.2 ND 7D1 6.6 11.2 9.8 9.9 9.6 10.4 ND ND ND ND 44.8 39.8 ND 4C1 5.8 10.6 10.6 9.2 9.9 9.8 ND ND ND ND 42.4 39.6 ND 0S2 0.5 17.7 14.7 15.8 16.3 17.0 ND ND ND ND 70.8 63.8 ND 1S1 0.4 17.4 16.2 14.3 15.5 16.3 ND ND ND ND 69.6 62.3 ND 2S1 0.2 16.8 15.6 14.9 14.6 16.4 ND ND ND ND 67.2 61.5 ND 3S1 0.4 20.9 19.0 18.9 19.2 19.4 ND ND ND ND 83.6 76.5 ND 4S1 0.5 19.5 19.2 17.5 18.7 18.4 ND ND ND ND 78.0 73.7 ND 7S1 0.3 18.5 18.7 17.6 17.8 19.6 ND ND ND ND 74.0 73.7 ND 9S1 0.4 22.6 20.6 20.6 20.2 21.1 ND ND ND ND 90.4 82.6 ND 1C1 4.7 13.2 12.4 11.8 12.1 12.6 ND ND ND ND 52.8 48.9 ND 5C1 4.7 16.4 14.7 14.8 15.9 15.0 ND ND ND ND 65.6 60.5 ND 3D1 6.2 12.8 11.9 11.4 10.8 11.9 ND ND ND ND 51.2 46.0 ND 6D1 8.3 14.1 13.0 12.7 13.7 13.4 ND ND ND ND 56.4 52.9 ND 5F3 12.7 17.2 14.1 13.7 13.8 13.8 ND ND ND ND 68.8 55.3 ND ND = Not Detected The 2021 AREOR historical baselines have been determined using ANSI/HPS N13.37-2014 methodology and Env TLD station results from approximately 2004 to 2014.

Quarterly Investigation Level Dose = Standard Quarter TLD result - Historical Quarterly Baseline. If < 6, report "ND". If > 6, report value (mrem).

Annual TLD Result = Qtr 1 + Qtr 2 + Qtr 3 + Qtr 4 Standard Quarter TLD Results Annual Investigation Level Dose = Annual TLD Result - Historical Annual Baseline. If < 12, report "ND". If > 12, report value (mrem).

See DCPP Station ID Maps in Figure 2.1 and Figure 2.2 47

Table 5-1: 2021 Quarterly and Annual TLD Analysis lists the dose results for each individual station.

These individual station results were compared to their "Historical Quarterly Baseline" values. There were no investigation level values for quarterly or annual dose results to report.

Figure 5 illustrates overall trending of Env TLDs relative to distance from the DCPP plant site. The Env TLD results were measurements of all environmental gamma radiation sources (cosmic, terrestrial, radon, and man-made) during the deployment period to allow for trending. Inner ring, outer ring, special interest, and control stations were combined and averaged to obtain a single standard quarter value for each represented plot line. Inner ring, outer ring, special interest, and control stations Env TLD averages remained within and trended with pre-operational Env TLD ranges. DCPP operations did not affect Env TLD results.

30.0 Beginning of Sta rt ISFSI Load -

+- plant ope ration - Inner Ring Stations

+- Fukushima Event

~ Special Interest Stations 25.0

- control Stations

- Outer Ring Stations 20.0 -lfln--t-~~l-,,c--Jf-11----:--Jt-----.-------.-------ll.---.-JH1K--:----11--.-----------I Inner Ring Stations -051 , WN1 , 0S2 ,

1S1, 251 , 351, 4S1 , 5S1 , 5S3, 651 , 7S1, 8S1, 852, 9S1, and MT1

~

~ Spec ial Interest Stations. 7F1. 7D1,

"'::, 7D2, 7G2, and 5F3

~ 15.0

i: Co ntrol Stations - 2F2, 4D1, and 5F1 LU 0::

E Outer Ri n g Stations - 1A1, 0B1 , 1C1 ,

2D1 , 3D1 , 4C 1, 5C1, 6D1 , and 7C1 10.0 5.0 00 1981 986 1991 1996 2001 2006 2011 2016 2021 Year Figure 5: TLD trending by distance from DCPP 48

Figure 6 illustrates averaged Env TLD results from the southeast sector (stations 8S1, 8S2) and northwest sector (stations 0S1, 0S2, 0B1). The Env TLD results were measurements of all environmental gamma radiation sources (cosmic, terrestrial, radon, and man-made) during the deployment period to allow for trending. These sectors were chosen for graphical trending due to their historically high averaged wind rose directions and would therefore indicate the most gaseous effluent impact on Env TLD results. The southeast and northwest sectors Env TLD averages trended with pre-operational Env TLD ranges. DCPP operations did not affect Env TLD results within these sectors. Averaged control stations (2F2, 4D1, 5F1) are provided for reference.

30.0 ......- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

- Beginning of start ISFSI Load - =

plant operation

- Fukushima Event - southeast Sector Average 25.0 +----i-----------------------------;;..-----------1 - Northwest Sector Average

- control Stations Southeast Sector - 8S1 and 8S2 Northwest Secto r -0S1 , 0S2, and 0B1 Contro l Stations - 2F2, 4D 1, and 5F1 10.0 + - - - - ~ - -- - - - - - - - - - - - - - - - - - - - ~ - , , - - - - - - - - - - i i 5.0 + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - i i 0.0 ..,..._ _ _..,__ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.,.._ _ _...,._ _ _....,.

1981 1986 1991 1996 2001 2006 2011 2016 2021 Year Figure 6: Average TLD results from southeast and northwest sectors with control stations.

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5.4.2 Direct Radiation from onsite ISFSI DCPP was licensed with an exclusion area boundary (i.e., site boundary) as an approximate 880-yard radius from U-1 Containment center. No permanent public access is permitted within the exclusion area.

The unrestricted area (i.e., outside the site boundary) surrounding DCPP is sparsely inhabited out to five miles from the site (ref. 2021 Land Use Census within Section 8).

The direct radiation levels within a very small area surrounding the onsite ISFSI are elevated due to dry cask spent fuel storage. The first spent fuel dry cask canister was loaded onto the ISFSI pad in June 2009.

There have been a total of seven cask loading campaigns with the most recent taking place in the summer of 2018. A total of 58 loaded dry casks are currently stored within the onsite ISFSI. ISFSI pad TLD stations IS-1 through IS-8 are located adjacent to the ISFSI pad fencing (see map in Figure 3 of this report). The remaining onsite areas are not affected with exposure due to the ISFSI topographical elevation and placement on a hillside which provides radiation shielding to the rest of the site.

DCPP ISFSI Pad within hillside, on south side of the make-up water reservoirs 50

Table 5-2: Quarterly and Annual ISFSI Environmental TLD Analysis.

2021 Quarterly ISFSI Env TLD Analysis 2021 Annual ISFSI Env TLD Analysis Historical 2021 Standard Quarter 2021 Quarterly Investigation Level Historical 2021 Annual 2021 Annual DCPP Distance Quarterly Baseline TLD Results (mrem) Dose (mrem) Annual Baseline TLD Result Investigation Level Dose Station ID in miles (mrem) Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 (mrem) (mrem) (mrem)

IS-1 0.3 23.1 24.0 23.0 22.4 24.1 ND ND ND ND 92.4 93.6 ND IS-2 0.3 23.1 21.8 23.9 22.2 23.7 ND ND ND ND 92.4 91.6 ND IS-3 0.3 23.1 54.2 56.8 55.5 57.3 31.1 33.7 32.4 34.2 92.4 223.9 131.5 IS-4 0.3 23.1 105.6 98.2 98.7 104.6 82.5 75.1 75.6 81.5 92.4 407.1 314.7 IS-5 0.3 23.1 41.8 42.7 42.2 42.7 18.7 19.6 19.1 19.6 92.4 169.4 77.0 IS-6 0.3 23.1 41.6 40.3 39.4 42.2 18.5 17.2 16.3 19.1 92.4 163.5 71.1 IS-7 0.3 23.1 46.5 44.2 41.5 44.8 23.4 21.1 18.4 21.7 92.4 177.1 84.7 IS-8 0.3 23.1 24.1 22.3 22.7 24.2 ND ND ND ND 92.4 93.3 ND ND = Not Detected The 2021 AREOR historical baselines have been determined using ANSI/HPS N13.37-2014 methodology and Env TLD station 5S1 results from approximately 2004 to 2014.

The historical baseline from REMP Station 5S1 was used for the ISFSI stations due to it's onsite close proximity to ISFSI.

Quarterly Investigation Level Dose = Standard Quarter TLD result - Historical Quarterly Baseline. If < 6, report "ND". If > 6, report value (mrem).

Annual TLD Result = Qtr 1 + Qtr 2 + Qtr 3 + Qtr 4 Standard Quarter TLD Results Annual Investigation Level Dose = Annual TLD Result - Historical Annual Baseline. If < 12, report "ND". If > 12, report value (mrem).

See DCPP Station ID Map in Figure 2.2 The Quarterly Investigation Level and Annual Investigation Level doses were due to spent fuel dry casks stored on the ISFSI pad.

The DCPP ISFSI Pad is located conservatively within the DCPP site boundary and is not located within the unrestricted area.

The DCPP ISFSI Pad is topographically elevated above most of the site and is built into a hillside. These characteristics shield onsite locations from ISFSI related radiation.

No permanent public access is permitted onsite within the DCPP site boundary.

Access occupancy surrounding the onsite ISFSI is restricted and controlled by DCPP Security. The above reported annual exposures are 24 x 365 occupancy exposure at that location.

If someone was to reside in a low occupancy condition (about 2.5 hrs per week) at ISFSI location IS-4 all year, their resulting exposure would be about 4.7 mrem/year above background.

10CFR20.1301 onsite member of public exposure and 40CFR190 unrestricted area exposure were evaluated. Dose limits were not exceeded and were conservatively met.

51

Table 5-2 reports the 2021 ISFSI Env "Standard Quarter TLD Results" for each individual station. These individual ISFSI station results were compared using the 2004 to 2014 "Historical Quarterly Baseline" and "Historical Annual Baseline" value at station 5S1. Station 5S1 was used for historical baseline purposes due to its proximity to the ISFSI pad.

"Quarterly and Annual Investigation Level Dose" was detected at ISFSI Env TLD stations IS-3 through IS-7 due to DCPP spent fuel dry casks stored on the ISFSI pad. Uncontrolled public access is not permitted within the DCPP site boundary. The DCPP ISFSI Pad is located conservatively within the DCPP site boundary. The DCPP ISFSI Pad is topographically elevated above most of the site and is built into a hillside. These characteristics shield most onsite locations from ISFSI related radiation.

The reported ISFSI Env TLD annual exposures reflect an occupancy condition of 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months per day and 365 days per year. Personnel access surrounding the onsite ISFSI is restricted and controlled by DCPP security to a low occupancy condition of less than 2.5 hours5.787037e-5 days 0.00139 hours 8.267196e-6 weeks 1.9025e-6 months per week. Based on this occupancy time and the maximum area exposure rate (IS-4), the most an individual could receive in a year is approximately 4.7 millirem above annual background radiation exposure. This is roughly equivalent to exposure from a ten-hour airline flight. An evaluation of direct radiation measurements and member-of-public occupancy times within the site boundary indicated all federal criteria for member-of-public dose limits (10CFR20.1301), and all federal EPA 40 CFR 190 criteria, were conservatively met.

Figure 1 displays the averaged TLD results (IS-1 through IS-8). The Env TLD results were measurements of all environmental gamma radiation sources (cosmic, terrestrial, radon, and man-made) during the deployment period to allow for trending.

Onsite ISFSI Boundary TLD Stations 55.0 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

+ - ISFSI Load Start

- -ISFSI Stations I O nsite ISF SI Stations (Ave) :

IS1, IS2, IS3, IS4, IS5, IS6, IS7, & IS8 Cl>

t:

.!! 35.0 +-- - - - - - -----+-'.......- - - - - - ---llf -- - - - - - - - - - - - - - - - - - --1 w

0:

E 30.0 +-- - - - - - --+tf -- - - - - - - - - - - - - - - - - - - - - - - - - - - - --1 25.0 +-- - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --1 20.0 + - - - - - --+-- - + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1 15.0 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

2005 2007 2009 201 1 2013 2015 2017 2019 2021 2023 2025 Year Figure 7: Onsite ISFSI boundary TLD Stations 52

5.4.3 Airborne Air particulate and radioiodine samples were collected weekly from six indicator stations (MT1, 0S2, 1S1, 7D1, 8S1, and 8S2) in the DCPP environs and one control station (5F1). A total of 364 air particulate filters and 364 iodine cartridges were collected and analyzed as part of the normal REMP.

Natural occurring gross beta activity was detected in every weekly air particulate sample collected from all indicator and control stations. Comparison of the data showed that the mean values of gross beta activities for the indicator stations were consistent with those obtained for the control station and historical trending. Normal background gross beta values ranged from 2.30E-3 to 9.14E-2 pCi/m3.

Gamma isotopic analyses were performed on quarterly composites of the 13 air particulate filters from each of the REMP air stations. The midpoint date of the quarter was used to label the composite. There were no gamma isotopic detections in 2021. A total of 364 REMP weekly TEDA air cartridges were analyzed for I-131 in 2021. There were no detections of I-131 in 2021.

Airborne Carbon-14 samples were collected weekly from two indicator stations (8S1, 0S2) in the DCPP environs and one control station (5F1). A total of 156 Carbon-14 cartridges were collected and analyzed as part of the REMP. One Carbon-14 detection occurred at station 8S1 due to facility operations during the week of 3/20/2021 - 3/27/2021. Exposure results were negligible and actual exposure results can be referenced in the 2021 DCPP ARERR found on the NRC website. All other Carbon-14 air cartridge results were non-detectible.

Great White Shark in Diablo Cove 53

5.4.4 Drinking Water and Ocean Surface Water Drinking water samples were collected from indicator stations 1A2, 5S2, DW1, WN2, and control station OEL. The samples were analyzed for gamma emitters, gross beta, tritium, total strontium 89/90, Iron-55, and Nickle-63. No DCPP related radionuclides were detected in any of the 2021 drinking water samples.

Ocean surface water samples were collected monthly from indicator stations DCM, OUT, and control station 7C2. The samples were analyzed for gamma emitters, gross beta, tritium, total strontium 89/90, Iron-55, and Nickle-63. No DCPP related radionuclides were detected in any of the 2021 ocean surface water samples.

5.4.5 Marine Samples Mussels are collected quarterly from stations DCM, POS, and 7C2. Mussels are collected annually from station PON (due to availability at station PON). No DCPP related radionuclides were detected in any of the 2021 mussel samples.

Fish samples are collected quarterly from stations DCM, PON, POS, 7C2 (control), and local fish markets 2F1 or 7D3. Market fish samples are typically locally caught rock fish or black cod.

Pre-operational (pre-1985) DCPP REMP sampling observed measurable Cs-137 in fish and sediment due to atmospheric nuclear weapons testing fallout from the 1960's and 1970's. Finding Cs-137 in fish or sediment has been historically common in SLO County and the DCPP environs due to atomic weapons testing fallout. The approximate historical fish Cs-137 concentrations have ranged from 3 to 14 pCi/kg.

This Cs-137 activity was also in agreement with the 1981 California Dept of Health Services Radiological Health Branch report and is considered part of SLO County background radioactivity. The preoperational 1981 ranges of Cs-137 observed in the Diablo cove (DCM) fish were 0 to 26 pCi/kg (decay corrected 0 to 10 pCi/kg in 2021). The 1981 ranges of Cs-137 observed in market fish were 0 to 38 pCi/kg (decay corrected 0 to 15 pCi/kg in 2021). The 1981 ranges of Cs-137 observed in ocean sediment were 0 to 93 pCi/kg (decay corrected 0 to 36 pCi/kg in 2021). The 1981 ranges of Cs-137 observed in soil were 0 to 298 pCi/kg (decay corrected 0 to 116 pCi/kg in 2021). Another recent background source of Cs-137 into California environs was due to the March 2011 Fukushima Event and subsequent jet stream isotopic dispersion to the United States.

Because Cs-137 has an isotopic half-life of approximately 30 years, this contaminant should be detected in the California environs for the next 10 to 40 years depending on initial concentration and the detection sensitivity of the REMP analyses. Cs-137 has a longer environmental half-life in coastal seawaters than in open oceans due to input sources like rain watershed runoff and storm condition sediment re-suspension.

While it is common to have detected Cs-137 in fish samples in the range of 3-14 pCi/kg, the number of positive detects largely corresponds to how many samples actually reach this level of MDC. The required LLD for Cs-137 is 150 pCi/kg. Most lab report MDCs for fish in 2021 were in the range of 10-30 pCi/kg, with some being slightly higher and some slightly lower. Based on review of the 2021 sample results, it appears that Cs-137 was likely present at the levels expected, but there were no cases where sample counts exceeded the analysis MDC to yield a positive detect to confirm this.

54

There was also no Cs-134 found in these fish samples. Cs-134, which has a shorter isotopic half-life (approximately 2 years), would be indicative of nuclear reactor fission products, and would not be attributed to atomic weapons testing. Because Cs-134 was absent in the REMP fish analyses; fish Cs-137 concentrations were attributed to either pre-1980's nuclear weapons testing or Fukushima related fallout with sediment re-suspension into watershed/storm runoff.

Kelp forest directly off the DCPP site coastline Supplemental marine aquatic kelp sampling is performed quarterly at REMP sample indicator stations DCM, PON, POS, and 7C2 (control). Supplemental intertidal algae sampling is performed quarterly at REMP sample station 7C2. Station DCM algae was unavailable in 2021. Each sample was analyzed for gamma emitting radionuclides. No DCPP related isotopes were detected in 2021.

Ocean sediment samples were collected annually from stations DCM and 7C2. Supplemental recreational beach sand samples were collected semi-annually from stations AVA, MDO, PMO, CYA, and CBA. Each sample was analyzed for gamma emitting radionuclides, total strontium 89/90, Iron-55, and Nickle-63. Only natural occurring isotopes were detected in the ocean sediment and recreational beach sand samples collected for 2021.

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Kawaoka Farm (station 7G1) 5.4.6 Vegetation (Food Crops)

Samples of broad leaf vegetation were collected monthly (when available) from two indicator stations (5F2 and 7C1), and one control location (7G1). Supplemental samples were also collected quarterly from residence or commercial gardens at stations 3C1, 6C1, and 7E1. The samples were analyzed for gamma emitting radionuclides. No DCPP related isotopes were detected in 2021 vegetation.

5.4.7 Milk There are no milking animals (for human consumption) within 5 miles of the plant site. In substitution, the DCPP REMP required additional air sampling at stations 1S1 and 8S2. Supplemental samples of milk are collected monthly from Cal Poly Farm (station 5F2) due to the Cal Poly dairy being the closest milk producer relative to the DCPP site and regardless of the availability of milk stations within 5 miles of the plant. The milk samples are analyzed for gamma emitting radionuclides, Iodine-131, and total strontium 89/90. No DCPP related radionuclides were detected in station 5F2 milk samples during 2021.

5.4.8 Meat Meat products were collected quarterly when available or provided from landowners. Blanchard cattle were allowed to graze on the northern DCPP lands during 2021. Blanchard Cow Meat (BCM) was sampled quarterly for gamma emitting radionuclides and total strontium 89/90. Supplemental Blanchard Sheep Meat (BSM) and Blanchard Goat Meat (BGM) were not available and were not provided by the rancher during all of 2021. Blanchard sheep and goats were not within 5 miles of the DCPP site in 2021. Station CCM, free range, grass fed beef sampling was conducted outside the influence of DCPP. Quarterly CCM meat was purchased by REMP personnel from local markets and butcher shops and consisted of Hearst Ranch ground beef and Templeton Hills beef. No DCPP related isotopes were detected in meat during 2021.

56

6 Groundwater Monitoring Diablo Canyon is committed to improving management of scenarios involving inadvertent radiological releases that get into onsite groundwater. This commitment reflects the nuclear industrys high standard of public radiation safety and protection of the environment. Trust and confidence on the part of local communities, California State, the NRC, and the public is paramount to this commitment.

Groundwater gradient studies of the DCPP ISFSI site and a general assessment of sub-regional hydro-geologic conditions indicates that groundwater (subsurface) flow beneath the Diablo Canyon power block is west to northwest toward the Pacific Ocean. Any groundwater present beneath the DCPP power block was not used as a source of drinking water.

6.1 NEI 07-07 Groundwater Protection Initiative Reporting NEI 07-07 Objective 2.4 (b), Annual Reporting: "Document in the AREOR all on-site ground water sample results that are included in the REMP as described in the DCPP Offsite Dose Calculation Manual (ODCM)". Onsite groundwater monitoring points are described in the REMP and reported in this 2021 Annual Radiological Environmental Operating Report (AREOR) as follows:

Observation Well 01 (OW1), Observation Well 02 (OW2), DCSF96-1 (8S3), Water Well 02 (WW2),

Groundwater Well 1 (GW1), Groundwater Well 2 (GW2), and Diablo Creek Outlet (WN2) were used for Groundwater Protection Initiative (GPI) data reporting and were described in 2021 DCPP AREOR Table 3-7.

6.2 Groundwater Sampling Overview As part of the nuclear industry NEI 07-07 Groundwater Protection Initiative (GPI), DCPP began sampling various ground water sources in 2006. These sources included onsite power block French-drain monitoring wells (OW1 & OW2), an aquifer well (WW2), Diablo Canyon creek (5S2 & WN2), up-gradient shallow well (8S3), and a groundwater spring (1A2). Two additional downgradient groundwater monitoring wells (stations GW1 and GW2) were installed along the western side of the DCPP site on December 14, 2011. REMP began sampling these two new wells during the first quarter of 2012.

One groundwater aquifer well (WW2) was available within the plant site boundary. This well was located about 250 feet above and to the east of the power block. WW2 was sampled quarterly for gamma emitters, gross beta, tritium, total strontium 89/90, Iron-55, and Nickle-63. No plant related radionuclides were detected in 2021.

One shallow (approximately 70 feet deep) up-gradient monitoring well (8S3) was located southeast at approximately 0.4 miles from the power block. 8S3 was sampled quarterly for gamma emitters, gross beta, tritium, total strontium 89/90, Iron-55, and Nickle-63. No plant related radionuclides were detected in 2021.

57

Two shallow (approximately 37 to 73 feet deep) French-drain systems discharge into two monitoring wells located within the plant protected area and in close proximity to the containment structures, spent fuel pools, and radiologically controlled area auxiliary building. These French-drain system monitoring wells were stations Observation Well 01 (OW1) and Observation Well 02 (OW2). OW2 was not sampled in 2021 due to no water present in the well during the entire 2021 timeframe.

Station OW1 contained low levels of tritium throughout 2021 due to rainwater washout of gaseous tritium exiting the plant vent system. This tritium was evaluated and attributed to the rain-washout of gaseous tritium exiting the plant vent system via an approved monitored radioactive effluent discharge path. DCPP conducted rain-washout studies to document this phenomenon. Rain-washout tritium communicated with these French-drain systems via building structure to ground interfaces. Once rainwater entered the monitoring wells, the water remained stagnant until another rain event caused transport. Subsequent quarterly sampling routinely indicated consistent tritium values due to monitoring well stagnation. These tritium concentrations were evaluated and were not due to a plant system leak or spill. OW1 is connected to subsurface groundwater flow fissures and routinely trends with rain fall.

The specific ranges of tritium detected in these power block monitoring wells for 2021 were as follows:

Observation Well 01 (OW1) - 480 to 887 pCi/L (4 of 4) sample tritium analysis.

Observation Well 02 (OW2); - no samples collected (well dry).

No other DCPP related isotopes were detected in OW1 or OW2 during 2021.

As mentioned previously, two down-gradient monitoring wells were added to the REMP in 2012.

Groundwater Well 1 (GW1) is located between the DCPP protected area and the Pacific Ocean cliff boundary. This well opening is located at approximately 85' above sea level on the same plane as the power block and is approximately 85' deep. Groundwater Well 2 (GW2) is located between the DCPP protected area and the Pacific Ocean cliff boundary. This well opening is located at approximately 85' above sea level on the same plane as the power block and was approximately 85' deep.

The specific ranges of tritium detected in GW1/GW2 monitoring wells for 2021 were as follows:

Groundwater Well 1 (GW1) - no tritium detected

Groundwater Well 2 (GW2) - no tritium detected No other DCPP related isotopes were detected in GW1 or GW2 in 2021.

All other samples of groundwater at 1A2, 5S2, 8S3, and WN2 did not indicate the presence of tritium or any other DCPP related isotopes (only NORM isotopes were observed) in 2021. Rain washout of tritium is discussed within NRC Regulatory Issue Summary (RIS) 2008-003, "Return/Re-use of Previously Discharged Radioactive Effluents".

Figure 8 and Figure 9 show the site structures, monitoring well locations, elevations, and groundwater gradient patterns on the site:

58

01 Legend t:J .Approximate Site Boundary D Power Block 150 __ Groundwater Elev ation Contour (feet above mean sea level)

Monitoring Well 0 Water Well French Drain Wells Surface Water Sampling Location Olablo Creek

- - .Above Ground

- - -

Piped Section

/:!QI!;_S;_

- Layers were digitiz: ed using satellite imagery for graphical representation. Locations are approximate

Oroundwater elevations and contours from Cardno Entrlx (June, 2012)

- Sate!llte imagery taken on 511 0!201 O Reproduced under license with A re GI S 10.1 250 500 1,000 1,500 Feet Figure 2: Site Layoul Diablo Canyon Power Plant Avila Beach Calilornia

~

ERM Figure 8: DCPP site layout 59

-'__ /"'

\

~

Legend Su rfa ce Water Sampling Location Monitoring We ll French Drain Infrastructure:

French Drain We lls

- - - ,3/4:I proximate French Dra in Location Facility Infrastructure:

~ Spent Fue l Storage Pools

~ Auxiliary Bu ilding Sump Q Deep Foun dation / Power Block

!iQif£.

- Layers were digitized using satelllte imagery for graphical representation. Locations are approximate

- Satellite lmage,y taken on 5/1012010 Reproduced under He ense with Arco IS 10.1 t

I 1

0 25 so 100 150 200 250 Feet

~1 Figure 3: Plant Layout Diablo Ca nyon Power Plant Alila Beach Californ ia a.,i.,_______..a,_ _ _ _ _ _ _ _ _.__ _ _ _ _ _ _ _ _ _ _ _ __,g Figure 9: DCPP Plant Layout 60

7 OSGSF Monitoring An Old Steam Generator Storage Facility (OSGSF) long term storage vault was constructed within the DCPP site boundary in 2007 for storage of eight retired DCPP steam generators and two retired DCPP reactor heads. For reference, the following equipment was placed into the OSGSF on the following dates:

3/2/08 (outage 2R14), four DCPP Unit Two (U-2) Steam Generators

2/14/09 (outage 1R15), four DCPP Unit One (U-1) Steam Generators

11/6/09 (outage 2R15), one DCPP Unit Two (U-2) Reactor (Rx) Head

10/23/10 (outage 1R16), one DCPP Unit One (U-1) Rx Head This OSGSF did not cause any changes to the ambient direct radiation levels within the DCPP environs during 2021. The OSGSF in-building sumps were inspected quarterly by REMP personnel. During the second quarter inspection water was found in the Vault 30 sump. Vault 30 houses the old U-2 Steam Generators. Rain intrusion into the OSGSF occasionally causes rainwater to concentrate in the OSGSF vault sumps. Previous evaluations of this scenario have identified that tritium could migrate into this sump water and therefore it should be sampled and disposed of via the plants liquid radwaste system if isotopes are identified per plant procedure RCP EM-5. Approximately 23 gallons of water were pumped out of OSGSF Vault 30 on 4/13/2021 and added to the plant liquid radwaste system. One gallon container and two tritium bottles were collected and sent to GEL for gamma and tritium analysis. Tritium was found to be present at a level of 5.43E+02 pCi/L. All other results were less than MDC. No other water was found in OSGSF sumps in 2021.

Old Steam Generator Storage Facility 61

8 2021 DCPP Land Use Census Diablo Canyon Power Plant (DCPP) was owned and operated by Pacific Gas & Electric (PG&E) Company.

PG&E owned and provided environmental stewardship to approximately 14 miles of Pacific Ocean coastline and approximately 13,000 acres surrounding the 1,000 acre DCPP site boundary. The PG&E property extended roughly from Avila Beach to Montana de Oro State Park. DCPP was located approximately seven miles WNW of Avila Beach and approximately four miles SSE of Montana de Oro State Park.

DCPP Radiological Environmental Monitoring Program (REMP) personnel conducted a Land Use Census (LUC) in the vicinity of DCPP for 2021. The LUC was based on Nuclear Regulatory Commission (NRC)

Regulatory Guide 4.8, Environmental Technical Specifications for Nuclear Power Plants. The LUC also provided compliance with 10 CFR 50 Appendix I Section IV (B)(3); "Identify changes in the use of unrestricted areas (e.g., for agricultural purposes) to permit modifications in monitoring programs for evaluating doses to individuals from principal pathways of exposure".

DCPP Program Directive CY2, Radiological Monitoring and Controls Program required performance of a LUC. DCPP procedure RP1.ID11, Environmental Radiological Monitoring Procedure, required identification of the nearest milk animal, nearest residence, and the nearest broadleaf producing garden greater than 50 square meters (500 square feet) in each of the landward meteorological sectors within a radial distance of 8 kilometers (5 miles) of the Unit One Containment (CTMT) structure. A LUC was conducted at least once per year during the growing season (between Feb 15 and Dec 1) for the Diablo Canyon environs.

The 2021 LUC was conducted via landowner telephone or email interviews. Interviews were conducted March 25th, 2021 through March 28th, 2021. Ten individual landowners or tenants were contacted.

8.1 Milk No milk animals were identified within the first 8 kilometers (5 miles) of any sector.

8.2 Residences The nearest residence, relative to all sectors, was a small trailer located in the NNW sector about 2.43 kilometers (1.51 miles) from the plant. One ranch worker occupied this BLANCHARD trailer approximately 5 days per year.

Eighteen structures were identified within the 8-kilometer (5-mile) radius of the site, which were confirmed or appear to have been occupied in 2021. Twenty-four abandoned structures were identified within the 8-kilometer (5-mile) radius of the site during the LUC. The nearest residence in each sector was summarized in Table 8-1.

62

8.3 Gardens The LUC identified two household gardens greater than 50 square meters (500 square feet) that produced broadleaf vegetation. The READ garden (REMP station 3C1) was approximately 1/4 acre and located in the NNE sector at 7.12 kilometers (4.42 miles). The KOONZE garden (REMP station 6C1) was approximately 500 square feet and located in the E sector at 7.46 kilometers (4.63 miles).

8.4 Additional Land Use It should be noted that the term site-boundary referred to the area within a radius of approximately 1.2 km (0.74 mi) from the Unit One CTMT structure. The area outside the "site-boundary" was also referred to as the "unrestricted area". Much of the area outside the site-boundary was routinely used for rotational cattle grazing by five separate cattle operations. For purposes of this land use census, the five cattle operations were called BLANCHARD, SINSHEIMER, READ, ANDRE, and MELLO.

BLANCHARD allowed cattle to graze within the DCPP environs in 2021. BLANCHARD did not graze any goats or sheep within 8 km (5 miles) of DCPP in 2021 due to drought conditions in San Luis Obispo County.

BLANCHARDs livestock were sold under the "Old Creek Ranch" label in SLO, Santa Cruz, and Santa Clara counties in 2021. "Old Creek Ranch" labeled meats were sampled quarterly by REMP personnel in 2021.

The REMP station codes were BCM, BGM, and BSM (if available).

SINSHEIMER had about 100 cattle outside the site-boundary in the NNE sector. The cows were allowed to breed and about 90 yearling calves were sold to mass market in 2021. SINSHEIMER did not slaughter any cattle in 2021 for personal consumption.

READ had about 80 cows, 4 bulls, and 72 yearling calves outside the site-boundary in the NNE sector.

About 72 yearling calves were sold to mass market in 2021. READ did not slaughter any cattle in 2021 for personal consumption.

ANDRE had about 50 cattle outside the site-boundary in the ENE sector. About 50 yearling calves were sold to mass market in 2021. ANDRE did not slaughter any cattle in 2021 for personal consumption.

MELLO managed about 400 cattle outside the site-boundary in the E, ESE, and SE sectors. A commercial cattle corporation owned these cattle and sold all of them to mass market in 2021. MELLO did not slaughter any cattle in 2021 for personal consumption.

Two landowners (JOHE and ANDRE) harvested wild game for personal consumption outside the site-boundary in the NNE, NE, and ENE sectors. This wild game consisted of approximately 2-4 deer per landowner.

There was a California State Park Ranger Office in the NNW sector at 7.48 kilometers (4.65 miles) from the site. Approximately three State Parks staff personnel occupy this office from 10:00-15:00 each day (365 days per year) normally, but the office had been closed due to the Covid-19 pandemic to possibly reopen when state and county protocols allowed.

There was a public campground (Islay Creek Campground) located in the NNW sector at Montana de Oro State Park at 7.31 kilometers (4.54 miles). This campground was near Spooner's Cove.

63

Approximately 800,000 people visited Montana de Oro State Park via day-use permit. Approximately 22,000 people spend the night at Islay Creek Campground in a normal year, but the campground was closed due to the Covid-19 pandemic to reopen based on state and county protocol. There was public access to hiking trails at the north end of the PG&E property in 2021.

The Point Buchon Trail was located at the north end of PG&E property and had about 18,000 visitors in 2021. The trail traversed about 3.4 miles of coastline from Coon Creek to Lion Rock overlook. The trail was open to the public for day hikes Thursday thru Monday from approximately 08:00-17:00. Two to three people from California Land Management occupied the trail head booth near Coon Creek during operational days from 07:00-17:30. This trail was originally opened to the public on July 13, 2007.

The Pecho Coast Trail was located at the south end of PG&E property and was closed to visitors in the beginning of 2021 because of the Covid-19 pandemic. The trail opened for limited use in June of 2021.

The trail was approximately 3.8 miles long and led from the Avila Beach DCPP entrance gate to the Point San Luis Lighthouse property. Pecho Coast Trail hikes were historically available on Wednesdays (about 20 people) and Saturdays (about 40 people). An extension of the trail up the coastline to Rattlesnake Canyon made the trail 8 miles roundtrip and is only usually available on Mondays (about 20 people each trip). This trail extension was improved in October 2017 to allow controlled vehicle access on the trail.

Access was normally controlled (via web-site reservation permission only) and conducted by docents from approximately 0900 to 1500. This trail was just slightly outside the 5-mile radius of the DCPP site.

This Pecho Coast Trail has been open for docent-guided hikes since 1993.

Five to ten Port San Luis Lighthouse keepers worked at the lighthouse grounds during the week in 2021.

There was a pool of 70 total volunteers that worked at the lighthouse in 2021. The public visited the lighthouse on Wednesdays and Saturdays, work crews were on-site on Tuesdays through the year. On May 1st, 2021 public tours began again on the lighthouse grounds. Beginning in mid-June the lighthouse allowed full public occupancy on the grounds.

8.5 NEI 07-07 Groundwater Protection Initiative (GPI)

Review:

There were no site construction activities or radioactive spills that warranted changes to GPI monitoring frequencies, monitoring locations, lab analytical capabilities, or analytical detection thresholds in 2021.

There were no changes in on-site or near site groundwater usage. Groundwater beneath the site power block was not used as a source of drinking water.

8.6 Old Steam Generator Storage Facility (OSGSF):

The OSGSF vault was located within the site-boundary in the ENE sector (68.3 degrees) at 0.99 km (0.61 mi) from Unit One CTMT. The following plant equipment was placed into the OSGSF for the duration of the Diablo Canyon Part 50 license on the dates indicated below.

Unit One old steam generators (4 total): 2/14/2009

Unit Two old steam generators (4 total): 3/2/2008

Unit One old reactor head (1 total): 10/23/2010

Unit Two old reactor head (1 total): 11/6/2009 64

8.7 Independent Spent Fuel Storage Installation (ISFSI):

The on-site dry cask ISFSI pad was located within the site-boundary in the ENE sector (58.47 degrees) at 0.36 km (0.22 mi) from Unit One CTMT. DCPP loaded its first ISFSI dry cask onto the pad on 6/23/2009.

There were no dry cask loading campaigns in 2021. At the end of 2021, a total of 58 dry casks occupied the ISFSI pad. Table 8-1 describes the direction and distance to the nearest residence location in each meteorological sector.

Table 8-1: Land Use Census 2021.

Nearest Nearest Residence 221/2 Degree 1 Nearest Vegetable Residence Azimuth Radial Sector Milk Animal Garden km (mi) Degrees km (mi)

NW None 5.76 (3.58) 325.18 None NNW None 2.43 (1.51) 2 332.01 None N None None None NNE None 5.18 (3.22) 21.43 7.12 (4.42) 3 NE None 7.94 (4.93) 35.33 None ENE None 7.15 (4.45) 63.84 None E None 5.96 (3.71) 89.89 7.46 (4.63) 4 ESE None None None SE None None None 1

Sectors not shown were over water and contained no land (other than islets not used for the purposes indicated in this table) beyond the site-boundary.

2 Blachard trailer was the residence used for critical receptor calculations 3

The Read (REMP station 3C1) vegetable garden was located in the NNE sector and the 19.89 azimuth degree.

There was also a limited use residence at this location 4

The Koonze (REMP station 6C1) vegetable garden was located in the E sector and the 97.26 azimuth degree. There was also a full-time residence at this location 65

9 Wind Rose Charts The Following pages contain windrose charts as provided by the PG&E Meteorological Department.

Wind roses are graphical charts that characterize the speed and direction of winds at a location.

Presented in a circular format, the length of each "spoke" around the circle indicates the amount of time that the wind blows from a particular direction. Colors along the spokes indicate categories of wind speed.

66

Joint Frequency Distribution Wind Speed and Wind Direction Diablo Canyon Power Plant 10 Meter Level 2021 N

30.62 I

--- -,-- I 0.82 3.21 1.08

, ... --- ~---

I 3.07 I

21.98 I

I

'I I

I I 2.98 'I

\ I I \

I I

I I I W I ________

I j._ _

I 3.77 2.33---~-------- ~ ----- E I I' I I I I I I

I 1.85 4.21 I I

I I

I

\

\ 2.24 9.03 2.23 6.91 3.68

~-- -------

--- ~-- ------

S Calms excluded.

0.1 3.5 6.9 11.5 18.4 24.2 Rings drawn at 10% intervals.

Wind flow is FROM the directions shown.

Wind Speed ( Miles Per Hour) 1 observations were missing.

PERCENT OCCURRENCE: Wind Speed ( Miles Per Hour) PERCENT OCCURRENCE: Wind Speed ( Miles Per Hour)

LOWER BOUND OF CATEGORY LOWER BOUND OF CATEGORY DIR 0.1 3.5 6.9 11.5 18.4 24.2 DIR 0.1 3.5 6.9 11.5 18.4 24.2 N 0.17 0.53 0.11 0.01 0.00 0.00 S 1.98 1.56 0.08 0.02 0.03 0.00 NNE 0.17 0.83 0.08 0.00 0.00 0.00 SSW 1.47 0.71 0.05 0.00 0.00 0.00 NE 0.45 1.80 0.69 0.11 0.02 0.00 SW 1.30 0.82 0.10 0.01 0.00 0.00 ENE 0.73 1.13 0.79 0.33 0.00 0.00 WSW 0.75 0.95 0.13 0.02 0.00 0.00 E 1.14 0.76 0.34 0.08 0.00 0.00 W 1.16 1.87 0.51 0.15 0.06 0.01 ESE 1.69 1.48 0.54 0.48 0.02 0.00 WNW 0.99 3.85 5.82 6.11 3.54 1.67 SE 1.99 3.81 2.25 0.45 0.13 0.41 NW 0.63 3.60 6.68 9.28 5.74 4.69 SSE 1.86 3.54 1.14 0.17 0.15 0.05 NNW 0.15 1.26 1.26 0.53 0.02 0.00 TOTAL OBS = 8759 MISSING OBS = 1 CALM OBS = 0 Figure 10: Wind rose charts 10 meter level 2021.

67

Joint Frequency Distribution Wind Speed and Wind Direction Diablo Canyon Power Plant 10 Meter Level 2017-2021 N

I

1----

1 I

30.03

/

/ --- - -~---- ....

/ '

0.86 '

4.13 1.19 \

\

3.03 '

I I

\

18.55 ' '\ \

\

2.97

\

I I W 3.73 2.45- - - - - - - _J_ - - - -

E 2.05 /

I 5.09 I

I 2.11 10.02

/

- _1_ - - /

I /

\ I /

2.52 3.95 7.31 I

/

I /

~----

/

I /

I I

I

~-----

S Calms excluded.

0.1 3.5 6.9 11.5 18.4 24.2 Rings drawn at 10% intervals.

Wind flow is FROM the directions shown.

Wind Speed ( Miles Per Hour) 486 observations were missing.

PERCENT OCCURRENCE: Wind Speed ( Miles Per Hour) PERCENT OCCURRENCE: Wind Speed ( Miles Per Hour)

LOWER BOUND OF CATEGORY LOWER BOUND OF CATEGORY DIR 0.1 3.5 6.9 11.5 18.4 24.2 DIR 0.1 3.5 6.9 11.5 18.4 24.2 N 0.16 0.50 0.19 0.01 0.00 0.00 S 1.91 1.65 0.28 0.08 0.04 0.00 NNE 0.22 0.73 0.23 0.01 0.00 0.00 SSW 1.54 0.82 0.12 0.02 0.01 0.00 NE 0.46 1.38 1.00 0.17 0.02 0.00 SW 1.18 0.73 0.18 0.03 0.00 0.00 ENE 0.78 1.02 0.71 0.44 0.02 0.00 WSW 0.92 0.81 0.24 0.08 0.00 0.00 E 1.21 0.78 0.34 0.11 0.00 0.00 W 1.14 1.65 0.51 0.32 0.08 0.04 ESE 1.95 1.57 0.73 0.72 0.12 0.00 WNW 1.15 4.00 4.58 5.08 2.57 1.16 SE 2.39 4.13 2.32 0.84 0.19 0.15 NW 0.78 3.80 6.25 9.16 5.64 4.41 SSE 2.05 3.48 1.23 0.29 0.21 0.07 NNW 0.15 1.29 1.65 0.83 0.18 0.04 TOTAL OBS = 43338 MISSING OBS = 486 CALM OBS = 0 Figure 11: Wind rose chart 10 meter level 2017-2021.

68

10 References

1. NRC Radiological Assessment Branch Technical Position on Environmental Monitoring, Revision 1, November 1979

2. NUREG-1301 "Offsite Dose Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors"

3. REG GUIDE 4.1 (Rev 1) "Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants"

4. REG GUIDE 4.15 (Rev 1) "Quality Assurance for Radiological Monitoring Programs (Normal Operations) - Effluent Streams and the Environment"

5. NRC Regulatory Issue Summary 2008-03, Return/Re-use of Previously Discharged Radioactive Effluents; February 13, 2008

6. ANSI/HPS N13.37-2014, "Environmental Dosimetry - Criteria for System Design and Implementation"

7. NEI 07-07, Industry Groundwater Protection Initiative - Final Guidance Document, Rev 1, March 2019

8. DCPP Program Directive, CY2, Radiological Monitoring and Controls Program.

9. DCPP Interdepartmental Administrative Procedure (IDAP), RP1.ID11, Environmental Radiological Monitoring Procedure.

10. DCPP Interdepartmental Administrative Procedure (IDAP), RP1.ID13, DCPP Groundwater Protection Initiative Program.

11. "Groundwater Gradient Analysis", by Entrix Corporation, March 2010

12. "Groundwater Gradient Analysis", by Cardno/Entrix Corporation, June 2012

13. "Diablo Canyon Power Plant Site Conceptual Model Report", by ERM July 30, 2014 69

11 Cross Check Program The following section contains the 2021 Annual Quality Assurance Report for the radiological environmental monitoring program. The report is compiled and provided by GEL Laboratories, LLC. Any intra-laboratory data for bias and precision that do not meet the criteria stated in the following (along with associated samples) are re-prepared and re-analyzed prior to sending the approved data to DCPP.

All reported data meet these requirements.

70

2021 ANNUAL QUALITY ASSURANCE REPORT FOR THE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP) 71

2021 ANNUAL QUALITY ASSURANCE REPORT FOR THE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)

Approved By March 1, 2022 Robert L. Pullano Date Director, Quality Systems 72

TABLE OF CONTENTS

1. INTRODUCTION 5

2. QUALITY ASSURANCE PROGRAMS FOR INTER-LABORATORY, INTRA-LABORATORY AND THIRD PARTY CROSS-CHECK 5

3. QUALITY ASSURANCE PROGRAM FOR INTERNAL AND EXTERNAL AUDITS 7

4. PERFORMANCE EVALUATION ACCEPTANCE CRITERIA FOR ENVIRONMENTAL SAMPLE ANALYSIS 7

5. PERFORMANCE EVALUATION SAMPLES 7

6. QUALITY CONTROL PROGRAM FOR ENVIRONMENTAL SAMPLE ANALYSIS 8

7.

SUMMARY

OF DATA RESULTS 9

8.

SUMMARY

OF PARTICIPATION IN THE ECKERT & ZIEGLER ANALYTICS ENVIRONMENTAL CROSS-CHECK PROGRAM 9

9.

SUMMARY

OF PARTICIPATION IN THE MAPEP MONITORING PROGRAM 9

10.

SUMMARY

OF PARTICIPATION IN THE ERA MRAD PT PROGRAM 9

11.

SUMMARY

OF PARTICIPATION IN THE ERA PT PROGRAM 9

12. CORRECTIVE ACTION REQUEST AND REPORT (CARR) 9

13. REFERENCES 11 TABLES TABLE 1 12 TABLE OF CONTENTS (CONTINUED)

FIGURES Figure 1 Cobalt-60 Performance Evaluation Results and % Bias .......................................... 32 Figure 2 Cesium-137 Performance Evaluation Results and % Bias ...................................... 33 Figure 3 Tritium Performance Evaluation Results and % Bias ............................................... 34 Figure 4 Strontium-90 Performance Evaluation Results and % Bias ...................................... 35 Figure 5 Gross Alpha Performance Evaluation Results and % Bias ....................................... 36 Figure 6 Gross Beta Performance Evaluation Results and % Bias ........................................ 37 73

Figure 7 Iodine-131 Performance Evaluation Results and % Bias ......................................... 38 Figure 8 Americium-241 Performance Evaluation Results and % Bias .................................. 39 Figure 9 Plutonium-238 Performance Evaluation Results and % Bias ................................... 40 74

2021 ANNUAL QUALITY ASSURANCE REPORT FOR THE RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM (REMP)

1. Introduction GEL Laboratories, LLC (GEL) is a privately owned environmental laboratory dedicated to providing personalized client services of the highest quality. GEL was established as an analytical testing laboratory in 1981. Now a full service lab, our analytical divisions use state of the art equipment and methods to provide a comprehensive array of organic, inorganic, and radiochemical analyses to meet the needs of our clients.

At GEL, quality is emphasized at every level of personnel throughout the company.

Managements ongoing commitment to good professional practice and to the quality of our testing services to our customers is demonstrated by their dedication of personnel and resources to develop, implement, assess, and improve our technical and management operations.

The purpose of GELs quality assurance program is to establish policies, procedures, and processes to meet or exceed the expectations of our clients. To achieve this, all personnel that support these services to our clients are introduced to the program and policies during their initial orientation, and annually thereafter during company-wide training sessions.

GELs primary goals are to ensure that all measurement data generated are scientifically and legally defensible, of known and acceptable quality per the data quality objectives (DQOs), and thoroughly documented to provide sound support for environmental decisions. In addition, GEL continues to ensure compliance with all contractual requirements, environmental standards, and regulations established by local, state and federal authorities.

GEL administers the QA program in accordance with the Quality Assurance Plan, GL-QS-B-001. Our Quality Systems include all quality assurance (QA) policies and quality control (QC) procedures necessary to plan, implement, and assess the work we perform. GELs QA Program establishes a quality management system (QMS) that governs all of the activities of our organization.

This report entails the quality assurance program for the proficiency testing and environmental monitoring aspects of GEL for 2021 GELs QA Program is designed to monitor the quality of analytical processing associated with environmental, radiobioassay, effluent (10 CFR Part 50), and waste (10 CFR Part 61) sample analysis.

This report covers the category of Radiological Environmental Monitoring Program (REMP) and includes:

Intra-laboratory QC results analyzed during 2021.

Inter-laboratory QC results analyzed during 2021 where known values are available.

2. Quality Assurance Programs for Inter-laboratory, Intra-laboratory and Third Party Cross-Check In addition to internal and client audits, our laboratory participates in annual performance evaluation studies conducted by independent providers. We routinely participate in the following types of performance audits:

Proficiency testing and other inter-laboratory comparisons 75

Performance requirements necessary to retain certifications

Evaluation of recoveries of certified reference and in-house secondary reference materials using statistical process control data.

Evaluation of relative percent difference between measurements through SPC data.

We also participate in a number of proficiency testing programs for federal and state agencies and as required by contracts. It is our policy that no proficiency evaluation samples be analyzed in any special manner. Our annual performance evaluation participation generally includes a combination of studies that support the following:

US Environmental Protection Agency Discharge Monitoring Report, Quality Assurance Program (DMR-QA). Annual national program sponsored by EPA for laboratories engaged in the analysis of samples associated with the NPDES monitoring program.

Participation is mandatory for all holders of NPDES permits. The permit holder must analyze for all of the parameters listed on the discharge permit. Parameters include general chemistry, metals, BOD/COD, oil and grease, ammonia, nitrates, etc.

Department of Energy Mixed Analyte Performance Evaluation Program (MAPEP). A semiannual program developed by DOE in support of DOE contractors performing waste analyses. Participation is required for all laboratories that perform environmental analytical measurements in support of environmental management activities. This program includes radioactive isotopes in water, soil, vegetation and air filters.

ERAs MRAD-Multimedia Radiochemistry Proficiency test program. This program is for labs seeking certification for radionuclides in wastewater and solid waste. The program is conducted in strict compliance with USEPA National Standards for Water Proficiency study.

ERAs InterLaB RadCheM Proficiency Testing Program for radiological analyses. This program completes the process of replacing the USEPA EMSL-LV Nuclear Radiation Assessment Division program discontinued in 1998. Laboratories seeking certification for radionuclide analysis in drinking water also use the study. This program is conducted in strict compliance with the USEPA National Standards for Water Proficiency Testing Studies. This program encompasses Uranium by EPA method 200.8 (for drinking water certification in Utah/Primary NELAP), gamma emitters, Gross Alpha/Beta, Iodine-131, naturally occurring radioactive isotopes, Strontium-89/90, and Tritium.

ERAs Water Pollution (WP) biannual program for waste methodologies includes parameters for both organic and inorganic analytes.

ERAs Water Supply (WS) biannual program for drinking water methodologies includes parameters for organic and inorganic analytes.

Environmental Cross-Check Program administered by Eckert & Ziegler Analytics, Inc.

This program encompasses radionuclides in water, soil, milk, naturally occurring radioactive isotopes in soil and air filters.

GEL procures single-blind performance evaluation samples from Eckert & Ziegler Analytics to verify the analysis of sample matrices processed at GEL. Samples are received on a quarterly basis. GELs Third-Party Cross-Check Program provides environmental matrices encountered in a typical nuclear utility REMP. The Third-Party Cross-Check Program is intended to meet or exceed the inter-laboratory comparison program requirements discussed in NRC Regulatory Guide 4.15. Once performance evaluation samples have been prepared in accordance with the instructions provided by the PT provider, samples are managed and analyzed in the same manner as environmental samples from GELs clients.

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3. Quality Assurance Program for Internal and External Audits During each annual reporting period, at least one internal assessment of each area of the laboratory is conducted in accordance with the pre-established schedule from Standard Operating Procedure for the Conduct of Quality Audits, GL-QS-E-001. The annual internal audit plan is reviewed for adequacy and includes the scheduled frequency and scope of quality control actions necessary to GELs QA program. Internal audits are conducted at least annually in accordance with a schedule approved by the Quality Systems Director.

Supplier audits are contingent upon the categorization of the supplies and may or may not be conducted prior to the use of a supplier or subcontractor. Type I suppliers and subcontractors, regardless of how they were initially qualified, are re-evaluated at least once every three years.

In addition, prospective customers audit GEL during pre-contract audits. GEL hosts several external audits each year for both our clients and other programs. These programs include environmental monitoring, waste characterization, and radiobioassay. The following list of programs may audit GEL at least annually or up to every three years depending on the program.

TNI, The NELAC Institute, National Environmental Laboratory Accreditation Program

DOECAP, U.S. Department of Energy Consolidated Audit Program

DOELAP, U.S. Department of Energy Laboratory Accreditation Program

DOE QSAS, U.S. Department of Energy, Quality Systems for Analytical Services

ISO/IEC 17025:2017

A2LA, American Association for Laboratory Accreditation

DoD ELAP, US Department of Defense Environmental Accreditation Program

NUPIC, Nuclear Procurement Issues Committee

South Carolina Department of Health and Environmental Control (SC DHEC)

The annual radiochemistry laboratory internal audit (21-RAD-001) was conducted in June, 2021. There were no findings or observations and four recommendations for improvements from this assessment.

4. Performance Evaluation Acceptance Criteria for Environmental Sample Analysis GEL utilized an acceptance protocol based upon two performance models. For those inter-laboratory programs that already have established performance criteria for bias (i.e.,

MAPEP, and ERA/ELAP), GEL will utilize the criteria for the specific program. For intra-laboratory or third party quality control programs that do not have a specific acceptance criteria (i.e. the Eckert-Ziegler Analytics Environmental Cross-check Program), results will be evaluated in accordance with GELs internal acceptance criteria.

5. Performance Evaluation Samples Performance Evaluation (PE) results and internal quality control sample results are evaluated in accordance with GEL acceptance criteria. The first criterion concerns bias, which is defined as the deviation of any one result from the known value. The second criterion concerns precision, which deals with the ability of the measurement to be replicated by comparison of an individual result with the mean of all results for a given sample set.

At GEL, we also evaluate our analytical performance on a regular basis through statistical process control (SPC) acceptance criteria. Where feasible, this criterion is applied to both measures of precision and accuracy and is specific to sample matrix. We establish environmental process control limits at least annually.

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For Radiochemistry analysis, quality control evaluation is based on static limits rather than those that are statistically derived. Our current process control limits are maintained in GELs AlphaLIMS. We also measure precision with matrix duplicates and/or matrix spike duplicates. The upper and lower control limits (UCL and LCL respectively) for precision are plus or minus three times the standard deviation from the mean of a series of relative percent differences. The static precision criteria for radiochemical analyses are 0 - 20%,

for activity levels exceeding the contract required detection limit (CRDL).

6. Quality Control Program for Environmental Sample Analysis GELs internal QA Program is designed to include QC functions such as instrumentation calibration checks (to insure proper instrument response), blank samples, instrumentation backgrounds, duplicates, as well as overall staff qualification analyses and statistical process controls. Both quality control and qualification analyses samples are used to be as similar as the matrix type of those samples submitted for analysis by the various laboratory clients. These performance test samples (or performance evaluation samples) are either actual sample submitted in duplicate in order to evaluate the precision of laboratory measurements, or fortified blank samples, which have been given a known quantity of a radioisotope that is in the interest to GELs clients.

Accuracy (or Bias) is measured through laboratory control samples and/or matrix spikes, as well as surrogates and internal standards. The UCLs and LCLs for accuracy are plus or minus three times the standard deviation from the mean of a series of recoveries. The static limit for most radiochemical analyses is 75 - 125%. Specific instructions for out-of-control situations are provided in the applicable analytical SOP.

GELs Laboratory Control Standard (LCS) is an aliquot of reagent water or other blank matrix to which known quantities of the method analytes are added in the laboratory. The LCS is analyzed exactly like a sample, and its purpose is to determine whether the methodology is in control, and whether the laboratory is capable of making accurate and precise measurements. Some methods may refer to these samples as Laboratory Fortified Blanks (LFB). The requirement for recovery is between 75% and 125% for radiological analyses excluding drinking water matrix.

Bias (%) = (observed concentration)

100 %

(known concentration)

Precision is a data quality indicator of the agreement between measurements of the same property, obtained under similar conditions, and how well they conform to themselves.

Precision is usually expressed as standard deviation, variance or range in either absolute or relative (percentage) terms.

GELs laboratory duplicate (DUP or LCSD) is an aliquot of a sample taken from the same container and processed in the same manner under identical laboratory conditions. The aliquot is analyzed independently from the parent sample and the results are compared to measure precision and accuracy.

If a sample duplicate is analyzed, it will be reported as Relative Percent Difference (RPD).

The RPD must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPD must be equal to or less than 100%.

If one result is above the MDC and the other is below the MDC, then the RPD can be calculated using the MDC for the result of the one below the MDC. The RPD must be 100%

or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPD must be less than or equal to 20%. If both results are below MDC, then the limits on % RPD are not applicable.

Difference (%) = (high duplicate result - low duplicate result)

100 %

(average of results) 78

7. Summary of Data Results During 2021, forty-five (45) radioisotopes associated with seven (7) matrix types were analyzed under GELs Performance Evaluation program in participation with ERA, MAPEP, and Eckert & Ziegler Analytics. Matrix types were representative of client analyses performed during 2021. Of the four hundred thirty three (433) total results, 96.5%% (418 of 433) were found to be acceptable within the PT providers three sigma or other statistical criteria. The list below contains the type of matrix evaluated by GEL.

Air Filter

Cartridge

Water

Milk

Soil

Liquid

Vegetation Graphs are provided in Figures 1-9 of this report to allow for the evaluation of trends or biases. These graphs include radioisotopes Cobalt-60, Cesium-137, Tritium, Strontium-90, Gross Alpha, Gross Beta, Iodine-131, Americium-241, and Plutonium-238.

8. Summary of Participation in the Eckert & Ziegler Analytics Environmental Cross-Check Program Eckert & Ziegler Analytics provided samples for one hundred thirty (130) individual environmental analyses. The accuracy of each result reported to Eckert & Ziegler Analytics, Inc. is measured by the ratio of GELs result to the known value. All results fell within GELs acceptance criteria (100% within acceptance).

9. Summary of Participation in the MAPEP Monitoring Program MAPEP Series 44 and 45 were analyzed by the laboratory. Of the one hundred thirty (130) analyses, 96.1% (125 out of 130) fell within the PT providers acceptance criteria.

10. Summary of Participation in the ERA MRaD PT Program The ERA MRad program provided samples (MRAD-34 and MRAD-35) for one hundred seventy-one (171) individual environmental analyses. Of the 171 analyses, 96.5% (165 out of 171) fell within the PT providers acceptance criteria.

11. Summary of Participation in the ERA PT Program The ERA program provided samples (RAD-124, RAD 125) for forty-three (43) individual environmental analyses. Of the 43 analyses, 88.4% (38 out of 43) fell within the PT providers acceptance criteria.

All corrective actions are summarized in Table 8.

12. Corrective Action Request and Report (CARR)

There are two categories of corrective action at GEL. One is corrective action implemented at the analytical and data review level in accordance with the analytical SOP. The other is formal corrective action documented by the Quality Systems Team in accordance with GL-QS-E-002. A formal corrective action is initiated when a nonconformance reoccurs or is so significant that permanent elimination or prevention of the problem is required. Formal corrective action investigations include root cause analysis.

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GEL includes quality requirements in most analytical standard operating procedures to ensure that data are reported only if the quality control criteria are met or the quality control measures that did not meet the acceptance criteria are documented. A formal corrective action is implemented according to GL-QS-E-002 for Conducting Corrective/Preventive Action and Identifying Opportunities for Improvement. Recording and documentation is performed following guidelines stated in GL-QS-E-012 for Client NCR Database Operation.

Any employee at GEL can identify and report a nonconformance and request that corrective action be taken. Any GEL employee can participate on a corrective action team as requested by the QS team or Group Leaders. The steps for conducting corrective action are detailed in GL-QS-E-002. In the event that correctness or validity of the laboratorys test results in doubt, the laboratory will take corrective action. If investigations show that the results have been impacted, affected clients will be informed of the issue in writing within five (5) calendar days of the discovery.

Table 8 provides the status of CARRs for radiological performance testing during 2021. It has been determined that causes of the unacceptable results did not impact any data reported to our clients.

CARR 210311-1305 for PT Failures in RAD Study 124

CARR 210524-1327 for PT Failures in RAD Study125

CARR 210723-1339 for PT Failures in MAPEP Study 44

CARR 210603-1329 for PT Failures in MRAD Study 34

CARR 211216-1360 for PT Failures in MAPEP Study 45

CARR 211215-1358 for PT Failures in MRAD Study 35 80

13. References

1. GEL Quality Assurance Plan, GL-QS-B-001

2. GEL Standard Operating Procedure for the Conduct of Quality Audits, GL-QS-E-001

3. GEL Standard Operating Procedure for Conducting Corrective/Preventive Action and Identifying Opportunities for Improvement, GL-QS-E-002

4. GEL Standard Operating Procedure for AlphaLIMS Documentation of Nonconformance Reporting and Dispositioning and Control of Nonconforming Items, GL-QS-E-004

5. GEL Standard Operating Procedure for Handling Proficiency Evaluation Samples, GL-QS-E-013

6. GEL Standard Operating Procedure for Quality Assurance Measurement Calculations and Processes, GL-QS-E-014

7. 40 CFR Part 136 Guidelines Establishing Test Procedures for the Analysis of Pollutants

8. ISO/IEC 17025-2017, General Requirements for the Competence of Testing and Calibration Laboratories

9. ANSI/ASQC E4-1994, Specifications and Guidelines for Quality Systems for Environmental Data Collection and Environmental Technology Programs, American National Standard

10. 2009 TNI Standard, The NELAC Institute, National Environmental Accreditation Program

11. MARLAP, Multi-Agency Radiological Laboratory Analytical Protocols

12. 10 CFR Part 21, Reporting of Defects and Noncompliance

13. 10 CFR Part 50 Appendix B, Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants

14. 10 CFR Part 61, Licensing Requirements for Land Disposal and Radioactive Waste

15. NRC REG Guide 4.15 and NRC REG Guide 4.8 81

TABLE 1 2021 RADIOLOGICAL PROFICIENCY TESTING RESULTS AND ACCEPTANCE CRITERIA Report Closing /

PT Quarter / Received Sample Sample Reported Assigned Acceptance Performance Provider Year Date Number Media Units Analyte Value Value Limits Evaluation ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Barium-133 22.3 23.8 18.4 - 27.4 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cesium-134 46.8 42.8 34.2 - 47.1 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cesium-137 148 148 133 - 165 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cesium-137 148 148 133 - 165 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cobalt-60 36.7 34.6 30.8 - 40.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Zinc-65 68.2 61.6 54.6 - 75.0 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Gross Alpha 69.6 63.3 33.2 - 78.5 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Gross Beta 38.8 39.8 26.4 - 47.3 Acceptable Not ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Radium-226 8.42* 15.5 11.5 - 17.8 Acceptable Not ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Radium-228 19.5* 12.9 8.54 - 15.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Radium-228 14.6 12.9 8.54 - 15.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Uranium (Nat) 29.4 30.1 24.4 - 33.4 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Uranium (Nat) mass 44.6 43.9 35.5 - 48.7 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Tritium 2000 2120 1750 - 2350 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Tritium 2020 2120 1750 - 2350 Acceptable Not ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-89 74.6 61.3 49.4 - 69.2 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-89 65.7 61.3 49.4 - 69.2 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-90 32.5 40.6 29.9 - 46.7 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-90 38.2 40.6 29.9 - 46.7 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Iodine-131 30.2 27.9 23.2 - 32.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Iodine-131 31.7 27.9 23.2 - 32.8 Acceptable EZA 1st/2021 03/11/21 E13356 Cartridge pCi Iodine-131 9.34E+01 8.80E+01 1.06 Acceptable EZA 1st/2021 03/11/21 E13357 Milk pCi/L Strontium-89 9.55E+01 8.71E+01 1.1 Acceptable EZA 1st/2021 03/11/21 E13357 Milk pCi/L Strontium-90 1.14E+01 1.26E+01 0.9 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cerium-141 1.32E+02 1.25E+02 1.05 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cobalt-58 1.33E+02 1.28E+02 1.04 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cobalt-60 1.57E+02 1.54E+02 1.02 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Chromium-51 2.33E+02 2.42E+02 0.96 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cesium-134 1.37E+02 1.51E+02 0.9 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cesium-137 1.12E+02 1.10E+02 1.02 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Manganese-54 1.15E+02 1.12E+02 1.02 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Iron-59 1.21E+02 1.09E+02 1.11 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Iodine-131 8.39E+01 8.69E+01 0.97 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Zinc-65 2.38E+02 2.11E+02 1.13 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cerium-141 1.26E+02 1.24E+02 1.02 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cobalt-58 1.34E+02 1.26E+02 1.06 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cobalt-60 1.54E+02 1.52E+02 1.01 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cesium-134 1.35E+02 1.50E+02 0.9 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cesium-137 1.15E+02 1.09E+02 1.06 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Iodine-131 9.64E+01 8.79E+01 1.1 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Iron-59 1.12E+02 1.08E+02 1.04 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Manganese-54 1.17E+02 1.11E+02 1.05 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Zinc-65 2.24E+02 2.08E+02 1.08 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Actinium-228 3260 3170 2090 - 3990 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Americium-241 1580 1620 875 - 2290 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Bismuth-212 3300 3280 939 - 4890 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Bismuth-214 1370 1380 662 - 2050 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Cesium-134 5380 5920 4050 - 7080 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Cesium-137 7580 7570 5720 - 9570 Acceptable 82

ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Cobalt-60 4660 5060 3980 - 6250 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Lead-212 3830 3350 2340 - 4240 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Lead-212 3830 3350 2340 - 4240 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Lead-214 1760 1440 605 - 2260 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Manganese-54 <28.3 <1000 <1000 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Plutonium-238 1810 1930 963 - 2930 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Plutonium-239 1610 1720 937 - 2480 Acceptable 17000 -

ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Potassium-40 24400 24700 29500 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Strontium-90 10200 9190 2860 - 14300 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Thorium-234 4870 4020 1520 - 6880 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-234 3650 4060 1900 - 5320 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-234 3740 4060 1900 - 5320 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-238 3480 4020 2210 - 5400 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-238 3320 4020 2210 - 5400 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-Total 7300 8260 4580 - 10700 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-Total 7060 8260 4580 - 10700 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Soil µg/kg (mass) 10400 12000 5420 - 16200 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Soil µg/kg (mass) 9950 12000 5420 - 16200 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Zinc-65 7090 7040 5620 - 9600 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Americium-241 2210 2460 1520 - 3470 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Cesium-134 1920 2350 1560 - 3130 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Cesium-137 2590 2720 2090 - 3660 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Cobalt-60 1640 1610 1260 - 2100 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Curium-244 3260 3750 2110 - 4660 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Manganese-54 <26.8 <300 <300 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Plutonium-238 3450 3610 2500 - 4660 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Plutonium-239 1750 1820 1260 - 2300 Acceptable 25000 -

ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Potassium-40 36700 33300 42200 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Strontium-90 986 1260 710 - 1640 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Strontium-90 986 1260 710 - 1640 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Uranium-234 1370 1420 998 - 1810 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Uranium-238 1380 1410 996 - 1760 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Uranium-Total 2830 2900 1850 - 3910 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 veg µg/kg (mass) 4150 4230 3250 - 5240 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Zinc-65 797 766 572 - 1140 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/Filter Americium-241 61.8 60.2 43.0 - 80.3 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-134 958 1030 668 - 1260 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-134 958 1030 668 - 1260 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-137 159 163 134 - 214 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-137 159 163 134 - 214 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cobalt-60 1280 1220 1040 - 1550 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Iron-55 103 121 44.2 - 193 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Manganese-54 <6.46 <50.0 <50.0 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Plutonium-238 35.9 35.4 26.7 - 43.5 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Plutonium-239 20.1 20.5 15.3 - 24.7 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Strontium-90 181 189 120 - 257 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-234 24.1 25.5 18.9 - 29.9 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-234 26.4 25.5 18.9 - 29.9 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-238 24.6 25.3 19.1 - 30.2 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-238 23.5 25.3 19.1 - 30.2 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-Total 50 52 38.0 - 61.7 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-Total 49.9 52 38.0 - 61.7 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Filter µg/Filter (mass) 73.8 75.9 60.9 - 88.9 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Filter µg/Filter (mass) 70.5 75.9 60.9 - 88.9 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Zinc-65 840 771 632 - 1180 Acceptable Not ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Gross Alpha 391* 96.1 50.2 - 158 Acceptable 83

ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Gross Beta 71.5 62.6 38.0 - 94.6 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Americium-241 160 157 108 - 201 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cesium-134 1550 1610 1220 - 1770 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cesium-137 595 578 495 - 657 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cobalt-60 2310 2180 1880 - 2500 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cobalt-60 2310 2180 1880 - 2500 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cobalt-60 2310 2180 1880 - 2500 Acceptable Not ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Iron-55 494 275 162 - 400 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Manganese-54 <6.01 <100 <100 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Plutonium-238 115 171 103 - 222 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Plutonium-239 95.2 142 87.9 - 175 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Strontium-90 736 671 483 - 829 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-234 140 160 122 - 183 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-234 162 160 122 - 183 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-234 152 160 122 - 183 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-238 146 158 122 - 186 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-238 158 158 122 - 186 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-238 145 158 122 - 186 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-Total 292 325 254 - 370 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-Total 297 325 254 - 370 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Water µg/L (mass) 436 474 384 - 538 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Water µg/L (mass) 433 474 384 - 538 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Zinc-65 1900 1720 1530 - 2170 Acceptable Not ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Gross Alpha 87.8 62.2 22.7 - 85.8 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Gross Beta 73.7 103 51.5 - 142 Acceptable 17200 -

ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Tritium 24900 22800 27800 Acceptable Not ERA 2nd/2021 5/25/2021 RAD 125 Water pCi/L Radium-226 14.2 19.3 14.3 - 22.0 Acceptable ERA 2nd/2021 5/25/2021 RAD 125 Water pCi/L Radium-228 9.98 10.3 6.71 - 12.8 Acceptable ERA 2nd/2021 5/25/2021 RAD 125 Water pCi/L Strontium-89 59.3 63.5 51.4 - 71.5 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Filter Bq/smpl Gross Alpha 0.864 1.77 0.53-3.01 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Filter Bq/smpl Gross Beta 0.639 0.649 0.325-0.974 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Water Bq/L Gross Alpha 0.782 0.87 0.26-1.48 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Water Bq/L Gross Beta 2.40 2.50 1.25-3.75 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Americium-241 89.6 88 62-114 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cesium-134 2.92 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cesium-137 1590 1550 1085-2015 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cobalt-57 1010 920 644-1196 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cobalt-60 1320 1370 959-1781 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Iron-55 1150 910 637-1183 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Manganese-54 1.84 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Nickel-63 597 689 482-896 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Plutonium-238 51.2 49.1 34.4-63.8 Acceptable MAPEP Plutonium-MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg 239/240 -0.819 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Potassium-40 618 618 433-803 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Strontium-90 313 272 190-354 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Technetium-99 576 638 447-829 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg U-234/233 57.1 59 41-77 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Uranium-238 194 208 146-270 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Zinc-65 627 604 423-785 Acceptable 84

MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Americium-241 0.0145 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cesium-134 10.6 11.5 8.1-15.0 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cesium-137 8.54 7.9 5.5-10.3 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cobalt-57 12.2 11.4 8.0-14.8 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cobalt-60 0.146 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Hydrogen-3 2.27 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Iron-55 27.1 26.9 18.8-35.0 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Manganese-54 16.7 15.5 10.9-20.2 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Nickel-63 10.4 8.2 5.7-10.7 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Plutonium-238 0.515 0.577 0.404-0.750 Acceptable MAPEP Plutonium-MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L 239/240 0.564 0.649 0.454-0.844 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Potassium-40 -0.886 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Radium-226 0.538 0.632 0.442-0.822 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Strontium-90 4.95 4.47 3.13-5.81 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Technetium-99 3.69 4.01 2.81-5.21 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Uranium-234/233 0.884 0.85 0.60-1.11 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Uranium-238 0.913 0.86 0.60-1.12 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Zinc-65 11.6 10.5 7.4-13.7 Acceptable MAPEP 0.0247-MAPEP 2nd/2021 06/22/21 RdF44 Filter ug/smpl Uranium-235 0.0366 0.0353 0.0459 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter ug/smpl Uranium-238 5.19 5.03 3.52-6.54 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter ug/smpl Uranium-Total 5.22 5.07 3.55-6.59 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Americium-241 0.0385 0.037 0.026-0.048 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cesium-134 2.12 2.14 1.50-2.78 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cesium-137 -0.0168 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cobalt-57 0.74 0.686 0.480-0.892 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cobalt-60 0.0325 False pos. test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Manganese-54 0.368 0.312 0.218-0.406 Acceptable MAPEP 0.0160-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Plutonium-238 0.0207 0.0228 0.0296 Acceptable MAPEP Plutonium- 0.0317-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl 239/240 0.0417 0.0453 0.0589 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Strontium-90 0.89 0.749 0.524-0.974 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Uranium-234/233 0.063 0.06 0.04-0.08 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Uranium-238 0.0617 0.063 0.044-0.082 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Zinc-65 0.457 0.352 0.246-0.458 Acceptable MAPEP 0.0410-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Americium-241 0.0605 0.0586 0.0762 Acceptable MAPEP Not MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cesium-134 2.51 3.6 2.52-4.68 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cesium-137 3.75 4.69 3.28-6.10 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cobalt-57 3.73 5.05 3.54-6.57 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cobalt-60 2.36 2.99 2.09-3.89 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Manganese-54 4.13 5.25 3.68-6.83 Acceptable MAPEP 0.0312-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Plutonium-238 0.0467 0.0446 0.058 Acceptable MAPEP Plutonium- 0.0645-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl 239/240 0.0912 0.0912 0.1197 Acceptable 85

MAPEP Not MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Strontium-90 0.444 0.673 0.471-0.875 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Uranium-234/233 0.136 0.138 0.097-0.179 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Uranium-238 0.143 0.143 0.100-0.186 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Zinc-65 -0.0042 False pos. test Acceptable EZA 2nd/2021 08/06/21 E13360 Cartridge pCi Iodine-131 9.99E+01 9.08E+01 1.10 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cerium-141 2.12E+02 2.17E+02 0.98 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cobalt-58 2.09E+02 2.16E+02 0.97 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cobalt-60 2.62E+02 2.60E+02 1.01 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Chromium-51 2.66E+02 6.42E+02 1.02 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cesium-134 2.34E+02 2.57E+02 0.91 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cesium-137 2.32E+02 2.26E+02 1.03 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Iron-59 2.50E+02 2.21E+02 1.13 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Iodine-131 8.04E+01 8.38E+01 0.96 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Manganese-54 3.05E+02 3.00E+02 1.02 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Zinc-65 3.93E+02 3.62E+02 1.09 Acceptable EZA 2nd/2021 08/06/21 E13363 Water pCi/L Cerium-141 1.96E+02 1.80E+02 1.09 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cobalt-58 1.84E+02 1.79E+02 1.03 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cobalt-60 2.20E+02 2.15E+02 1.02 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Chromium-51 5.65E+02 5.33E+02 1.06 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cesium-134 2.02E+02 2.13E+02 0.95 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cesium-137 2.00E+02 1.88E+02 1.07 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Iron-59 2.12E+02 1.83E+02 1.16 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Iodine-131 9.21E+01 9.20E+01 1.00 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Manganese-54 2.75E+02 2.49E+02 1.10 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Zinc-65 3.35E+02 3.00E+02 1.12 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Barium-133 48.9 45.5 37.2 - 50.6 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Cesium-134 84.4 87.5 71.8 - 96.2 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Cesium-137 211 208 187 - 230 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Cobalt-60 93 87.1 78.4 - 98.1 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Zinc-65 108 102 91.8 - 122 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Gross Alpha 39.1 49.1 25.6 - 61.7 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Gross Alpha 40.3 49.1 25.6 - 61.7 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Gross Beta 30.4 31.5 20.3 - 39.2 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Radium-226 11.2 13.4 9.99 - 15.4 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Radium-228 6.8 7.59 4.81 - 9.68 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Radium-228 6.69 7.59 4.81 - 9.68 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Uranium (Nat) 59.6 62.3 50.9 - 68.5 Acceptable Uranium (Nat)

ERA 3rd /2021 08/30/21 RAD-126 Water µg/L mass 94 90.9 74.2 - 100 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Tritium 9820 10400 9050 - 11400 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Tritium 10300 10400 9050 - 11400 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Strontium-89 50.3 55.9 44.6 - 63.6 Acceptable Not ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Strontium-90 46.2 40.1 29.5 - 46.1 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Iodine-131 17.6 20.8 17.2 - 25.0 Acceptable EZA 3rd/2021 11/08/21 E13364 Cartridge pCi Iodine-131 1.02E+02 9.08E+01 112 Acceptable EZA 3rd/2021 11/08/21 E13365 Milk pCi/L Strontium-89 8.92E+01 8.54E+01 1.04 Acceptable EZA 3rd/2021 11/08/21 E13365 Milk pCi/L Strontium-90 1.01E+01 1.40E+01 0.72 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cerium-141 1.17E+02 1.14E+02 1.02 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cobalt-58 1.25E+02 1.18E+02 1.06 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cobalt-60 1.46E+02 1.45E+02 1.01 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Chromium-51 2.69E+02 2.36E+02 1.14 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cesium-134 9.00E+01 9.31E+01 0.97 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cesium-137 1.14E+02 1.12E+02 1.02 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Iron-59 1.23E+02 1.02E+02 1.21 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Iodine-131 9.08E+01 8.56E+01 1.06 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Manganese-54 1.31E+02 1.28E+02 1.02 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Zinc-65 1.65E+02 1.53E+02 1.08 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cerium-141 1.54E+02 1.51E+02 1.02 Acceptable 86

EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cobalt-58 1.62E+02 1.56E+02 1.04 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cobalt-60 2.07E+02 1.91E+02 1.08 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Chromium-51 3.30E+02 3.12E+02 1.06 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cesium-134 1.13E+02 1.23E+02 0.92 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cesium-137 1.57E+02 1.48E+02 1.06 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Iron-59 1.52E+02 1.35E+02 1.13 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Iodine-131 2.71E+02 2.47E+02 1.10 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Manganese-54 1.83E+02 1.70E+02 1.08 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Zinc-65 2.33E+02 2.02E+02 1.15 Acceptable MAPEP Not MAPEP 4th/2021 12/16/21 GrF45 Filter Bq/sample Gross Alpha 1.73 0.98 0.288-1.632 Acceptable MAPEP MAPEP 4th/2021 12/16/21 GrF45 Filter Bq/sample Gross Beta 0.642 0.553 0.277-0.830 Acceptable MAPEP MAPEP 4th/2021 12/16/21 GrW45 Water Bq/L Gross Alpha 0.226 0.232 0.070-0.394 Acceptable MAPEP MAPEP 4th/2021 12/16/21 GrW45 Water Bq/L Gross Beta 2.73 2.8707 1.404-4.211 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Americium-241 106.0 98.0 69-127 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cesium-134 993 1170 819-1521 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cesium-137 579.00 572 400-744 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cobalt-57 0.375 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cobalt-60 692 722 505-939 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Iron-55 994 1020 714-1326 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Manganese-54 412 410 287-533 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Nickel-63 1170 1280 896-1664 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Plutonium-238 55.9 59.8 41.9-77.7 Acceptable MAPEP Plutonium-MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg 239/240 66.3 71.3 49.9-92.7 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Potassium-40 612 607 425-789 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Strontium-90 0.161 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Technetium-99 747 777 544-1010 Acceptable MAPEP Not MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg U-234/233 80 51 36.0-66.8 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Uranium-238 177 168 118-218 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Zinc-65 945 907 635-1179 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Americium-241 0.407 0.426 0.298-0.554 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cesium-134 9.5 10.4 7.3-13.5 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cesium-137 -0.04 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cobalt-57 14 13.9 9.7-18.1 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cobalt-60 14.5 14.0 9.8-18.2 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Hydrogen-3 231 250 175-325 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Iron-55 47.9 49.8 34.9-64.7 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Manganese-54 9.47 9.0 6.3-11.7 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Nickel-63 41.4 39.5 27.7-51.4 Acceptable MAPEP Sens.

MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Plutonium-238 -0.00169 0.0096 Evaluation Acceptable MAPEP Plutonium-MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L 239/240 0.470 0.528 0.370-0.689 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Potassium-40 0.005 Test Acceptable MAPEP Not MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Radium-226 0.310 0.226 0.158-0.294 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Strontium-90 3.50 3.86 2.70-5.02 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Technetium-99 3.79 3.71 2.60-4.82 Acceptable 87

MAPEP Sens.

MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Uranium-234/233 0.0203 0.0215 Evaluation Acceptable MAPEP Sens.

MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Uranium-238 0.00975 0.0123 Evaluation Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Zinc-65 0.122 Test Acceptable MAPEP 0.0412-MAPEP 4th/2021 12/16/21 RdF45 Filter ug/sample Uranium-235 0.0594 0.0588 0.0764 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter ug/sample Uranium-238 8.5 8.3 5.8-10.8 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter ug/sample Uranium-Total 8.579 8.4 5.9-10.9 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Americium-241 0.109 0.119 0.083-0.155 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cesium-134 1.23 1.32 0.92-1.72 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cesium-137 1.31 1.280 0.90-1.66 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cobalt-57 0.82800 0.83 0.58-1.08 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cobalt-60 2.37 2.28 1.60-2.96 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Manganese-54 1.60 1.46 1.02-1.90 Acceptable MAPEP Sens.

MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Plutonium-238 0.0023 0.0030 Evaluation Acceptable MAPEP Plutonium- 0.0426-MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample 239/240 0.0574 0.0609 0.0792 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Strontium-90 0.195 0.273 0.191-0.355 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Uranium-234/233 0.101 0.100 0.070-0.130 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Uranium-238 0.107 0.104 0.073-0.135 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Zinc-65 0.0579 Test Acceptable MAPEP 0.0523-MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Americium-241 0.0724 0.0747 0.0971 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cesium-134 4.02 4.34 3.04-5.64 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cesium-137 2.28 2.21 1.55-2.87 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cobalt-57 4.56 4.66 3.26-6.06 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cobalt-60 3.44 3.51 2.46-4.56 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Manganese-54 -0.0404 Test Acceptable MAPEP 0.0459-MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Plutonium-238 0.0603 0.0655 0.0852 Acceptable MAPEP Plutonium- False Pos MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample 239/240 0.00140 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Strontium-90 1.10 1.32 0.92-1.72 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Uranium-234/233 0.1740 0.1830 0.128-0.238 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Uranium-238 0.1770 0.1760 1.123-0.229 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Zinc-65 2.57 2.43 1.70-3.16 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Actinium-228 3370 3240 2140 - 4080 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Americium-241 922 891 481 - 1260 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Bismuth-212 3320 3350 959 - 4990 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Bismuth-214 1140 1370 658 - 2040 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cesium-134 2410 2650 1810 - 3170 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cesium-134 2410 2650 1810 - 3170 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cesium-137 3720 3660 2770 - 4630 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cobalt-60 4680 4730 3720 - 5840 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Lead-212 3840 3420 2390 - 4320 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Lead-214 1480 1490 626 - 2340 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Manganese-54 <27.4 <1000 <1000 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Plutonium-238 1230 1250 623 - 1900 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Plutonium-239 1440 1450 790 - 2090 Acceptable 17000 -

ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Potassium-40 25600 24700 29500 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Strontium-90 8770 6090 1900 - 9490 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Thorium-234 3350 2720 1030 - 4660 Acceptable 88

ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-234 2620 2740 1280 - 3590 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-234 3260 2740 1280 - 3590 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-238 2870 2720 1490 - 3650 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-238 3400 2720 1490 - 3650 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-Total 5670 5580 3100 - 7210 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-Total 5670 5580 3100 - 7210 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-Total 6817 5580 3100 - 7210 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil µg/kg Uranium (mass) 8630 8140 3670 - 11000 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil µg/kg Uranium (mass) 10200 8140 3670 - 11000 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Zinc-65 5540 4860 3880 - 6630 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Americium-241 4040 4040 2500 - 5710 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cesium-134 918 923 613 - 1230 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cesium-137 2180 2210 1700 - 2980 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cobalt-60 1670 1590 1250 - 2080 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cobalt-60 1670 1590 1250 - 2080 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Curium-244 2830 2840 1600 - 3530 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Manganese-54 <47.1 <300 <300 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Plutonium-238 1730 1620 1120 - 2090 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Plutonium-239 1620 1440 995 - 1820 Acceptable 25000 -

ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Potassium-40 30200 33300 42200 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Strontium-90 5760 5720 3220 - 7450 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Uranium-234 1410 1350 948 - 1720 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Uranium-238 1420 1340 946 - 1680 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Uranium-Total 2900 2750 1760 - 3710 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg µg/kg Uranium (mass) 4250 4010 3080 - 4970 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Zinc-65 1340 1200 896 - 1780 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Americium-241 28.1 27.7 19.8 - 36.9 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cesium-134 217 241 156 - 296 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cesium-137 187 187 154 - 245 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cobalt-60 324 310 264 - 394 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cobalt-60 324 310 264 - 394 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Iron-55 508 548 200 - 874 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Manganese-54 <3.06 <50.0 <50.0 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Plutonium-238 27.8 28.5 21.5 - 35.0 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Plutonium-239 22.6 21.6 16.1 - 26.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Strontium-90 23.4* 19.2 12.1 - 26.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-234 7.96 7.76 5.75 - 9.09 Acceptable Not ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-234 9.62* 7.76 5.75 - 9.09 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-238 7.35 7.69 5.81 - 9.17 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-238 7.38 7.69 5.81 - 9.17 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-Total 15.8 15.8 11.5 - 18.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-Total 17 15.8 11.5 - 18.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter µg/Filter Uranium (mass) 22.1 23.1 18.5 - 27.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter µg/Filter Uranium (mass) 22.1 23.1 18.5 - 27.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Zinc-65 414 366 300 - 559 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Gross Alpha 95.4 77.6 40.5 - 128 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Gross Beta 87 80.6 48.9 - 122 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Americium-241 70.5 63.7 43.7 - 81.5 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Cesium-134 626 649 490 - 714 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Cesium-137 2210 2170 1860 - 2470 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Cobalt-60 1040 964 831 - 1110 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Iron-55 339* 246 145 - 358 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Plutonium-238 74.1 114 68.5 - 148 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Plutonium-239 21.3 34.3 21.2 - 42.3 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Strontium-90 915 936 674 - 1160 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-234 39.9 40.8 31.1 - 46.7 Acceptable Not ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-234 49.8* 40.8 31.1 - 46.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-238 40.3 40.5 31.4 - 47.7 Acceptable 89

ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-238 41.2 40.5 31.4 - 47.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-Total 83.1 83.2 64.9 - 94.8 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-Total 92.9* 83.2 64.9 - 94.8 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water µg/L Uranium (mass) 121 121 98.0 - 137 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water µg/L Uranium (mass) 123 121 98.0 - 137 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Zinc-65 449 394 351 - 497 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Gross Alpha 74.7 93.9 34.3 - 129 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Gross Beta 96.1 97 48.5 - 133 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Tritium 12600 12800 9650 - 15600 Acceptable ERA 4th/2021 11/27/21 RAD-127 Water pCi/L Strontium-90 28.5 29.3 21.3 - 34.0 Acceptable EZA 4th/2021 02/02/22 E13368 Cartridge pCi Iodine-131 9.78E+01 9.35E+01 1.05 Acceptable EZA 4th/2021 02/02/22 E13370 Milk pCi/L Strontium-89 7.54E+01 9.08E+01 0.83 Acceptable EZA 4th/2021 02/02/22 E13370 Milk pCi/L Strontium-90 1.10E+01 1.30E+01 0.85 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cerium-141 1.32E+02 1.32E+02 1.00 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cobalt-58 1.14E+02 1.14E+02 1.00 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cobalt-60 2.27E+02 2.23E+02 1.02 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Chromium-51 2.84E+02 2.93E+02 0.97 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cesium-134 1.51E+02 1.66E+02 0.91 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cesium-137 1.15E+02 1.17E+02 0.98 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Iron-59 1.27E+02 1.13E+02 1.13 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Iodine-131 9.28E+01 9.03E+01 1.03 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Manganese-54 1.60E+02 1.52E+02 1.06 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Zinc-65 2.87E+02 2.57E+02 1.12 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cerium-141 1.53E+02 1.54E+02 0.99 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cobalt-58 1.42E+02 1.34E+02 1.06 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cobalt-60 2.82E+02 2.61E+02 1.08 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Chromium-51 3.75E+02 3.42E+02 1.1 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cesium-134 1.82E+02 1.94E+02 0.94 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cesium-137 1.41E+02 1.37E+02 1.03 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Iron-59 1.44E+02 1.32E+02 1.09 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Iodine-131 9.66E+01 9.13E+01 1.06 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Manganese-54 1.88E+02 1.77E+02 1.06 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Zinc-65 3.45E+02 3.01E+02 1.15 Acceptable 90

TABLE 2 2021 ECKERT & ZIEGLER ANALYTICS PERFORMANCE EVALUATION RESULTS Report Closing /

PT Quarter / Received Sample Sample Reported Assigned Acceptance Performance Provider Year Date Number Media Units Analyte Value Value Limits Evaluation EZA 1st/2021 03/11/21 E13356 Cartridge pCi Iodine-131 9.34E+01 8.80E+01 1.06 Acceptable Strontium-EZA 1st/2021 03/11/21 E13357 Milk pCi/L 89 9.55E+01 8.71E+01 1.1 Acceptable Strontium-EZA 1st/2021 03/11/21 E13357 Milk pCi/L 90 1.14E+01 1.26E+01 0.9 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cerium-141 1.32E+02 1.25E+02 1.05 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cobalt-58 1.33E+02 1.28E+02 1.04 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cobalt-60 1.57E+02 1.54E+02 1.02 Acceptable Chromium-EZA 1st/2021 03/11/21 E13358 Milk pCi/L 51 2.33E+02 2.42E+02 0.96 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cesium-134 1.37E+02 1.51E+02 0.9 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Cesium-137 1.12E+02 1.10E+02 1.02 Acceptable Manganese-EZA 1st/2021 03/11/21 E13358 Milk pCi/L 54 1.15E+02 1.12E+02 1.02 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Iron-59 1.21E+02 1.09E+02 1.11 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Iodine-131 8.39E+01 8.69E+01 0.97 Acceptable EZA 1st/2021 03/11/21 E13358 Milk pCi/L Zinc-65 2.38E+02 2.11E+02 1.13 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cerium-141 1.26E+02 1.24E+02 1.02 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cobalt-58 1.34E+02 1.26E+02 1.06 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cobalt-60 1.54E+02 1.52E+02 1.01 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cesium-134 1.35E+02 1.50E+02 0.9 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Cesium-137 1.15E+02 1.09E+02 1.06 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Iodine-131 9.64E+01 8.79E+01 1.1 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Iron-59 1.12E+02 1.08E+02 1.04 Acceptable Manganese-EZA 1st/2021 03/11/21 E13359 Water pCi/L 54 1.17E+02 1.11E+02 1.05 Acceptable EZA 1st/2021 03/11/21 E13359 Water pCi/L Zinc-65 2.24E+02 2.08E+02 1.08 Acceptable EZA 2nd/2021 08/06/21 E13360 Cartridge pCi Iodine-131 9.99E+01 9.08E+01 1.10 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cerium-141 2.12E+02 2.17E+02 0.98 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cobalt-58 2.09E+02 2.16E+02 0.97 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cobalt-60 2.62E+02 2.60E+02 1.01 Acceptable Chromium-EZA 2nd/2021 08/06/21 E13362 Milk pCi/L 51 2.66E+02 6.42E+02 1.02 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cesium-134 2.34E+02 2.57E+02 0.91 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Cesium-137 2.32E+02 2.26E+02 1.03 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Iron-59 2.50E+02 2.21E+02 1.13 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Iodine-131 8.04E+01 8.38E+01 0.96 Acceptable Manganese-EZA 2nd/2021 08/06/21 E13362 Milk pCi/L 54 3.05E+02 3.00E+02 1.02 Acceptable EZA 2nd/2021 08/06/21 E13362 Milk pCi/L Zinc-65 3.93E+02 3.62E+02 1.09 Acceptable EZA 2nd/2021 08/06/21 E13363 Water pCi/L Cerium-141 1.96E+02 1.80E+02 1.09 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cobalt-58 1.84E+02 1.79E+02 1.03 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cobalt-60 2.20E+02 2.15E+02 1.02 Acceptable Chromium-EZA 2nd/2021 08/06/21 E13174 Water pCi/L 51 5.65E+02 5.33E+02 1.06 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cesium-134 2.02E+02 2.13E+02 0.95 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Cesium-137 2.00E+02 1.88E+02 1.07 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Iron-59 2.12E+02 1.83E+02 1.16 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Iodine-131 9.21E+01 9.20E+01 1.00 Acceptable Manganese-EZA 2nd/2021 08/06/21 E13174 Water pCi/L 54 2.75E+02 2.49E+02 1.10 Acceptable EZA 2nd/2021 08/06/21 E13174 Water pCi/L Zinc-65 3.35E+02 3.00E+02 1.12 Acceptable EZA 3rd/2021 11/08/21 E13364 Cartridge pCi Iodine-131 1.02E+02 9.08E+01 112 Acceptable Strontium-EZA 3rd/2021 11/08/21 E13365 Milk pCi/L 89 8.92E+01 8.54E+01 1.04 Acceptable Strontium-EZA 3rd/2021 11/08/21 E13365 Milk pCi/L 90 1.01E+01 1.40E+01 0.72 Acceptable 91

EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cerium-141 1.17E+02 1.14E+02 1.02 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cobalt-58 1.25E+02 1.18E+02 1.06 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cobalt-60 1.46E+02 1.45E+02 1.01 Acceptable Chromium-EZA 3rd/2021 11/08/21 E13366 Milk pCi/L 51 2.69E+02 2.36E+02 1.14 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cesium-134 9.00E+01 9.31E+01 0.97 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Cesium-137 1.14E+02 1.12E+02 1.02 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Iron-59 1.23E+02 1.02E+02 1.21 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Iodine-131 9.08E+01 8.56E+01 1.06 Acceptable Manganese-EZA 3rd/2021 11/08/21 E13366 Milk pCi/L 54 1.31E+02 1.28E+02 1.02 Acceptable EZA 3rd/2021 11/08/21 E13366 Milk pCi/L Zinc-65 1.65E+02 1.53E+02 1.08 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cerium-141 1.54E+02 1.51E+02 1.02 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cobalt-58 1.62E+02 1.56E+02 1.04 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cobalt-60 2.07E+02 1.91E+02 1.08 Acceptable Chromium-EZA 3rd/2021 11/08/21 E13367 Water pCi/L 51 3.30E+02 3.12E+02 1.06 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cesium-134 1.13E+02 1.23E+02 0.92 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Cesium-137 1.57E+02 1.48E+02 1.06 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Iron-59 1.52E+02 1.35E+02 1.13 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Iodine-131 2.71E+02 2.47E+02 1.10 Acceptable Manganese-EZA 3rd/2021 11/08/21 E13367 Water pCi/L 54 1.83E+02 1.70E+02 1.08 Acceptable EZA 3rd/2021 11/08/21 E13367 Water pCi/L Zinc-65 2.33E+02 2.02E+02 1.15 Acceptable EZA 4th/2021 02/02/22 E13368 Cartridge pCi Iodine-131 9.78E+01 9.35E+01 1.05 Acceptable Strontium-EZA 4th/2021 02/02/22 E13370 Milk pCi/L 89 7.54E+01 9.08E+01 0.83 Acceptable Strontium-EZA 4th/2021 02/02/22 E13370 Milk pCi/L 90 1.10E+01 1.30E+01 0.85 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cerium-141 1.32E+02 1.32E+02 1.00 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cobalt-58 1.14E+02 1.14E+02 1.00 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cobalt-60 2.27E+02 2.23E+02 1.02 Acceptable Chromium-EZA 4th/2021 02/02/22 E13366 Milk pCi/L 51 2.84E+02 2.93E+02 0.97 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cesium-134 1.51E+02 1.66E+02 0.91 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Cesium-137 1.15E+02 1.17E+02 0.98 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Iron-59 1.27E+02 1.13E+02 1.13 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Iodine-131 9.28E+01 9.03E+01 1.03 Acceptable Manganese-EZA 4th/2021 02/02/22 E13366 Milk pCi/L 54 1.60E+02 1.52E+02 1.06 Acceptable EZA 4th/2021 02/02/22 E13366 Milk pCi/L Zinc-65 2.87E+02 2.57E+02 1.12 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cerium-141 1.53E+02 1.54E+02 0.99 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cobalt-58 1.42E+02 1.34E+02 1.06 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cobalt-60 2.82E+02 2.61E+02 1.08 Acceptable Chromium-EZA 4th/2021 02/02/22 E13367 Water pCi/L 51 3.75E+02 3.42E+02 1.1 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cesium-134 1.82E+02 1.94E+02 0.94 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Cesium-137 1.41E+02 1.37E+02 1.03 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Iron-59 1.44E+02 1.32E+02 1.09 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Iodine-131 9.66E+01 9.13E+01 1.06 Acceptable Manganese-EZA 4th/2021 02/02/22 E13367 Water pCi/L 54 1.88E+02 1.77E+02 1.06 Acceptable EZA 4th/2021 02/02/22 E13367 Water pCi/L Zinc-65 3.45E+02 3.01E+02 1.15 Acceptable 92

TABLE 3 2021 DEPARTMENT OF ENERGY MIXED ANALYTE PERFORMANCE EVALUATION PROGRAM (MAPEP) RESULTS Report PT Quarter / Received Sample Analyte / GEL Known Acceptance Provider Year Date Sample Number Media Unit Nuclide Value value Range/ Ratio Evaluation MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Filter Bq/smpl Gross Alpha 0.864 1.77 0.53-3.01 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Filter Bq/smpl Gross Beta 0.639 0.649 0.325-0.974 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Water Bq/L Gross Alpha 0.782 0.87 0.26-1.48 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 GrF44 Water Bq/L Gross Beta 2.40 2.50 1.25-3.75 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Americium-241 89.6 88 62-114 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cesium-134 2.92 test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cesium-137 1590 1550 1085-2015 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cobalt-57 1010 920 644-1196 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Cobalt-60 1320 1370 959-1781 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Iron-55 1150 910 637-1183 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Manganese-54 1.84 test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Nickel-63 597 689 482-896 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Plutonium-238 51.2 49.1 34.4-63.8 Acceptable MAPEP Plutonium- False pos.

MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg 239/240 -0.819 test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Potassium-40 618 618 433-803 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Strontium-90 313 272 190-354 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Technetium-99 576 638 447-829 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg U-234/233 57.1 59 41-77 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Uranium-238 194 208 146-270 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaS44 Soil Bq/Kg Zinc-65 627 604 423-785 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Americium-241 0.0145 test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cesium-134 10.6 11.5 8.1-15.0 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cesium-137 8.54 7.9 5.5-10.3 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cobalt-57 12.2 11.4 8.0-14.8 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Cobalt-60 0.146 test Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Hydrogen-3 2.27 test Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Iron-55 27.1 26.9 18.8-35.0 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Manganese-54 16.7 15.5 10.9-20.2 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Nickel-63 10.4 8.2 5.7-10.7 Acceptable MAPEP 0.404-MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Plutonium-238 0.515 0.577 0.750 Acceptable MAPEP Plutonium- 0.454-MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L 239/240 0.564 0.649 0.844 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Potassium-40 -0.886 test Acceptable MAPEP 0.442-MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Radium-226 0.538 0.632 0.822 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Strontium-90 4.95 4.47 3.13-5.81 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Technetium-99 3.69 4.01 2.81-5.21 Acceptable 93

MAPEP Uranium-MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L 234/233 0.884 0.85 0.60-1.11 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Uranium-238 0.913 0.86 0.60-1.12 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 MaW44 Water Bq/L Zinc-65 11.6 10.5 7.4-13.7 Acceptable MAPEP 0.0247-MAPEP 2nd/2021 06/22/21 RdF44 Filter ug/smpl Uranium-235 0.0366 0.0353 0.0459 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter ug/smpl Uranium-238 5.19 5.03 3.52-6.54 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter ug/smpl Uranium-Total 5.22 5.07 3.55-6.59 Acceptable MAPEP 0.026-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Americium-241 0.0385 0.037 0.048 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cesium-134 2.12 2.14 1.50-2.78 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cesium-137 -0.0168 test Acceptable MAPEP 0.480-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cobalt-57 0.74 0.686 0.892 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Cobalt-60 0.0325 test Acceptable MAPEP 0.218-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Manganese-54 0.368 0.312 0.406 Acceptable MAPEP 0.0160-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Plutonium-238 0.0207 0.0228 0.0296 Acceptable MAPEP Plutonium- 0.0317-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl 239/240 0.0417 0.0453 0.0589 Acceptable MAPEP 0.524-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Strontium-90 0.89 0.749 0.974 Acceptable MAPEP Uranium-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl 234/233 0.063 0.06 0.04-0.08 Acceptable MAPEP 0.044-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Uranium-238 0.0617 0.063 0.082 Acceptable MAPEP 0.246-MAPEP 2nd/2021 06/22/21 RdF44 Filter Bq/smpl Zinc-65 0.457 0.352 0.458 Acceptable MAPEP 0.0410-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Americium-241 0.0605 0.0586 0.0762 Acceptable MAPEP Not MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cesium-134 2.51 3.6 2.52-4.68 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cesium-137 3.75 4.69 3.28-6.10 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cobalt-57 3.73 5.05 3.54-6.57 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Cobalt-60 2.36 2.99 2.09-3.89 Acceptable MAPEP MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Manganese-54 4.13 5.25 3.68-6.83 Acceptable MAPEP 0.0312-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Plutonium-238 0.0467 0.0446 0.058 Acceptable MAPEP Plutonium- 0.0645-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl 239/240 0.0912 0.0912 0.1197 Acceptable MAPEP 0.471- Not MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Strontium-90 0.444 0.673 0.875 Acceptable MAPEP Uranium- 0.097-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl 234/233 0.136 0.138 0.179 Acceptable MAPEP 0.100-MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Uranium-238 0.143 0.143 0.186 Acceptable MAPEP False pos.

MAPEP 2nd/2021 06/22/21 RdV44 veg Bq/smpl Zinc-65 -0.0042 test Acceptable MAPEP Not MAPEP 4th/2021 12/16/21 GrF45 Filter Bq/sample Gross Alpha 1.73 0.98 0.288-1.632 Acceptable MAPEP MAPEP 4th/2021 12/16/21 GrF45 Filter Bq/sample Gross Beta 0.642 0.553 0.277-0.830 Acceptable MAPEP MAPEP 4th/2021 12/16/21 GrW45 Water Bq/L Gross Alpha 0.226 0.232 0.070-0.394 Acceptable MAPEP MAPEP 4th/2021 12/16/21 GrW45 Water Bq/L Gross Beta 2.73 2.8707 1.404-4.211 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Americium-241 106.0 98.0 69-127 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cesium-134 993 1170 819-1521 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cesium-137 579.00 572 400-744 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cobalt-57 0.375 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Cobalt-60 692 722 505-939 Acceptable 94

MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Iron-55 994 1020 714-1326 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Manganese-54 412 410 287-533 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Nickel-63 1170 1280 896-1664 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Plutonium-238 55.9 59.8 41.9-77.7 Acceptable MAPEP Plutonium-MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg 239/240 66.3 71.3 49.9-92.7 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Potassium-40 612 607 425-789 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Strontium-90 0.161 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Technetium-99 747 777 544-1010 Acceptable MAPEP Not MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg U-234/233 80 51 36.0-66.8 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Uranium-238 177 168 118-218 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaS45 Soil Bq/Kg Zinc-65 945 907 635-1179 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Americium-241 0.407 0.426 0.298-0.554 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cesium-134 9.5 10.4 7.3-13.5 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cesium-137 -0.04 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cobalt-57 14 13.9 9.7-18.1 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Cobalt-60 14.5 14.0 9.8-18.2 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Hydrogen-3 231 250 175-325 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Iron-55 47.9 49.8 34.9-64.7 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Manganese-54 9.47 9.0 6.3-11.7 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Nickel-63 41.4 39.5 27.7-51.4 Acceptable MAPEP Sens.

MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Plutonium-238 -0.00169 0.0096 Evaluation Acceptable MAPEP Plutonium-MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L 239/240 0.470 0.528 0.370-0.689 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Potassium-40 0.005 Test Acceptable MAPEP Not MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Radium-226 0.310 0.226 0.158-0.294 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Strontium-90 3.50 3.86 2.70-5.02 Acceptable MAPEP MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Technetium-99 3.79 3.71 2.60-4.82 Acceptable MAPEP Uranium- Sens.

MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L 234/233 0.0203 0.0215 Evaluation Acceptable MAPEP Sens.

MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Uranium-238 0.00975 0.0123 Evaluation Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 MaW45 Water Bq/L Zinc-65 0.122 Test Acceptable MAPEP 0.0412-MAPEP 4th/2021 12/16/21 RdF45 Filter ug/sample Uranium-235 0.0594 0.0588 0.0764 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter ug/sample Uranium-238 8.5 8.3 5.8-10.8 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter ug/sample Uranium-Total 8.579 8.4 5.9-10.9 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Americium-241 0.109 0.119 0.083-0.155 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cesium-134 1.23 1.32 0.92-1.72 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cesium-137 1.31 1.280 0.90-1.66 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cobalt-57 0.82800 0.83 0.58-1.08 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Cobalt-60 2.37 2.28 1.60-2.96 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Manganese-54 1.60 1.46 1.02-1.90 Acceptable MAPEP Sens.

MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Plutonium-238 0.0023 0.0030 Evaluation Acceptable MAPEP Plutonium- 0.0426-MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample 239/240 0.0574 0.0609 0.0792 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Strontium-90 0.195 0.273 0.191-0.355 Acceptable 95

MAPEP Uranium-MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample 234/233 0.101 0.100 0.070-0.130 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Uranium-238 0.107 0.104 0.073-0.135 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 RdF45 Filter Bq/sample Zinc-65 0.0579 Test Acceptable MAPEP 0.0523-MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Americium-241 0.0724 0.0747 0.0971 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cesium-134 4.02 4.34 3.04-5.64 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cesium-137 2.28 2.21 1.55-2.87 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cobalt-57 4.56 4.66 3.26-6.06 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Cobalt-60 3.44 3.51 2.46-4.56 Acceptable MAPEP False Pos MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Manganese-54 -0.0404 Test Acceptable MAPEP 0.0459-MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Plutonium-238 0.0603 0.0655 0.0852 Acceptable MAPEP Plutonium- False Pos MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample 239/240 0.00140 Test Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Strontium-90 1.10 1.32 0.92-1.72 Acceptable MAPEP Uranium-MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample 234/233 0.1740 0.1830 0.128-0.238 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Uranium-238 0.1770 0.1760 1.123-0.229 Acceptable MAPEP MAPEP 4th/2021 12/16/21 RdV45 Vegetation Bq/sample Zinc-65 2.57 2.43 1.70-3.16 Acceptable 96

TABLE 4 2021 ERA PROGRAM PERFORMANCE EVALUATION RESULTS Report PT Quarter / Received Sample Sample GEL Provider Year Date Number Media Unit Analyte / Nuclide Value Known value Acceptance Range Evaluation Not ERA 2nd/2021 5/25/2021 RAD 125 Water pCi/L Radium-226 14.2 19.3 14.3 - 22.0 Acceptable ERA 2nd/2021 5/25/2021 RAD 125 Water pCi/L Radium-228 9.98 10.3 6.71 - 12.8 Acceptable ERA 2nd/2021 5/25/2021 RAD 125 Water pCi/L Strontium-89 59.3 63.5 51.4 - 71.5 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Barium-133 22.3 23.8 18.4 - 27.4 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cesium-134 46.8 42.8 34.2 - 47.1 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cesium-137 148 148 133 - 165 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cesium-137 148 148 133 - 165 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Cobalt-60 36.7 34.6 30.8 - 40.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Zinc-65 68.2 61.6 54.6 - 75.0 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Gross Alpha 69.6 63.3 33.2 - 78.5 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Gross Beta 38.8 39.8 26.4 - 47.3 Acceptable Not ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Radium-226 8.42* 15.5 11.5 - 17.8 Acceptable Not ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Radium-228 19.5* 12.9 8.54 - 15.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Radium-228 14.6 12.9 8.54 - 15.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Uranium (Nat) 29.4 30.1 24.4 - 33.4 Acceptable Uranium (Nat)

ERA 1st/2021 03/02/21 RAD-124 Water pCi/L mass 44.6 43.9 35.5 - 48.7 Acceptable 1750 -

ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Tritium 2000 2120 2350 Acceptable 1750 -

ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Tritium 2020 2120 2350 Acceptable Not ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-89 74.6 61.3 49.4 - 69.2 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-89 65.7 61.3 49.4 - 69.2 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-90 32.5 40.6 29.9 - 46.7 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Strontium-90 38.2 40.6 29.9 - 46.7 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Iodine-131 30.2 27.9 23.2 - 32.8 Acceptable ERA 1st/2021 03/02/21 RAD-124 Water pCi/L Iodine-131 31.7 27.9 23.2 - 32.8 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Barium-133 48.9 45.5 37.2 - 50.6 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Cesium-134 84.4 87.5 71.8 - 96.2 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Cesium-137 211 208 187 - 230 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Cobalt-60 93 87.1 78.4 - 98.1 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Zinc-65 108 102 91.8 - 122 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Gross Alpha 39.1 49.1 25.6 - 61.7 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Gross Alpha 40.3 49.1 25.6 - 61.7 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Gross Beta 30.4 31.5 20.3 - 39.2 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Radium-226 11.2 13.4 9.99 - 15.4 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Radium-228 6.8 7.59 4.81 - 9.68 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Radium-228 6.69 7.59 4.81 - 9.68 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Uranium (Nat) 59.6 62.3 50.9 - 68.5 Acceptable Uranium (Nat)

ERA 3rd /2021 08/30/21 RAD-126 Water µg/L mass 94 90.9 74.2 - 100 Acceptable 9050 -

ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Tritium 9820 10400 11400 Acceptable 9050 -

ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Tritium 10300 10400 11400 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Strontium-89 50.3 55.9 44.6 - 63.6 Acceptable Not ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Strontium-90 46.2 40.1 29.5 - 46.1 Acceptable ERA 3rd /2021 08/30/21 RAD-126 Water pCi/L Iodine-131 17.6 20.8 17.2 - 25.0 Acceptable 97

TABLE 5 2021 ERA PROGRAM (MRAD) PERFORMANCE EVALUATION RESULTS Report Acceptance PT Quarter / Received Sample Sample GEL Known Range/

Provider Year Date Number Media Unit Analyte / Nuclide Value value Ratio Evaluation ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Actinium-228 3260 3170 2090 - 3990 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Americium-241 1580 1620 875 - 2290 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Bismuth-212 3300 3280 939 - 4890 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Bismuth-214 1370 1380 662 - 2050 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Cesium-134 5380 5920 4050 - 7080 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Cesium-137 7580 7570 5720 - 9570 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Cobalt-60 4660 5060 3980 - 6250 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Lead-212 3830 3350 2340 - 4240 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Lead-212 3830 3350 2340 - 4240 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Lead-214 1760 1440 605 - 2260 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Manganese-54 <28.3 <1000 <1000 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Plutonium-238 1810 1930 963 - 2930 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Plutonium-239 1610 1720 937 - 2480 Acceptable 17000 -

ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Potassium-40 24400 24700 29500 Acceptable 2860 -

ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Strontium-90 10200 9190 14300 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Thorium-234 4870 4020 1520 - 6880 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-234 3650 4060 1900 - 5320 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-234 3740 4060 1900 - 5320 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-238 3480 4020 2210 - 5400 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-238 3320 4020 2210 - 5400 Acceptable 4580 -

ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-Total 7300 8260 10700 Acceptable 4580 -

ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Uranium-Total 7060 8260 10700 Acceptable Uranium-Total 5420 -

ERA 2nd/2021 5/25/2021 MRAD 34 Soil µg/kg (mass) 10400 12000 16200 Acceptable Uranium-Total 5420 -

ERA 2nd/2021 5/25/2021 MRAD 34 Soil µg/kg (mass) 9950 12000 16200 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Soil pCi/kg Zinc-65 7090 7040 5620 - 9600 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Americium-241 2210 2460 1520 - 3470 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Cesium-134 1920 2350 1560 - 3130 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Cesium-137 2590 2720 2090 - 3660 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Cobalt-60 1640 1610 1260 - 2100 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Curium-244 3260 3750 2110 - 4660 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Manganese-54 <26.8 <300 <300 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Plutonium-238 3450 3610 2500 - 4660 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Plutonium-239 1750 1820 1260 - 2300 Acceptable 25000 -

ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Potassium-40 36700 33300 42200 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Strontium-90 986 1260 710 - 1640 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Strontium-90 986 1260 710 - 1640 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Uranium-234 1370 1420 998 - 1810 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Uranium-238 1380 1410 996 - 1760 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Uranium-Total 2830 2900 1850 - 3910 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 veg µg/kg (mass) 4150 4230 3250 - 5240 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/kg Zinc-65 797 766 572 - 1140 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 veg pCi/Filter Americium-241 61.8 60.2 43.0 - 80.3 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-134 958 1030 668 - 1260 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-134 958 1030 668 - 1260 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-137 159 163 134 - 214 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cesium-137 159 163 134 - 214 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Cobalt-60 1280 1220 1040 - 1550 Acceptable 98

ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Iron-55 103 121 44.2 - 193 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Manganese-54 <6.46 <50.0 <50.0 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Plutonium-238 35.9 35.4 26.7 - 43.5 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Plutonium-239 20.1 20.5 15.3 - 24.7 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Strontium-90 181 189 120 - 257 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-234 24.1 25.5 18.9 - 29.9 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-234 26.4 25.5 18.9 - 29.9 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-238 24.6 25.3 19.1 - 30.2 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-238 23.5 25.3 19.1 - 30.2 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-Total 50 52 38.0 - 61.7 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Uranium-Total 49.9 52 38.0 - 61.7 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Filter µg/Filter (mass) 73.8 75.9 60.9 - 88.9 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Filter µg/Filter (mass) 70.5 75.9 60.9 - 88.9 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Zinc-65 840 771 632 - 1180 Acceptable Not ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Gross Alpha 391* 96.1 50.2 - 158 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Filter pCi/Filter Gross Beta 71.5 62.6 38.0 - 94.6 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Americium-241 160 157 108 - 201 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cesium-134 1550 1610 1220 - 1770 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cesium-137 595 578 495 - 657 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cobalt-60 2310 2180 1880 - 2500 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cobalt-60 2310 2180 1880 - 2500 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Cobalt-60 2310 2180 1880 - 2500 Acceptable Not ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Iron-55 494 275 162 - 400 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Manganese-54 <6.01 <100 <100 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Plutonium-238 115 171 103 - 222 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Plutonium-239 95.2 142 87.9 - 175 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Strontium-90 736 671 483 - 829 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-234 140 160 122 - 183 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-234 162 160 122 - 183 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-234 152 160 122 - 183 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-238 146 158 122 - 186 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-238 158 158 122 - 186 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-238 145 158 122 - 186 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-Total 292 325 254 - 370 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Uranium-Total 297 325 254 - 370 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Water µg/L (mass) 436 474 384 - 538 Acceptable Uranium-Total ERA 2nd/2021 5/25/2021 MRAD 34 Water µg/L (mass) 433 474 384 - 538 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Zinc-65 1900 1720 1530 - 2170 Acceptable Not ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Gross Alpha 87.8 62.2 22.7 - 85.8 Acceptable ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Gross Beta 73.7 103 51.5 - 142 Acceptable 17200 -

ERA 2nd/2021 5/25/2021 MRAD 34 Water pCi/L Tritium 24900 22800 27800 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Actinium-228 3370 3240 2140 - 4080 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Americium-241 922 891 481 - 1260 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Bismuth-212 3320 3350 959 - 4990 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Bismuth-214 1140 1370 658 - 2040 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cesium-134 2410 2650 1810 - 3170 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cesium-134 2410 2650 1810 - 3170 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cesium-137 3720 3660 2770 - 4630 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Cobalt-60 4680 4730 3720 - 5840 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Lead-212 3840 3420 2390 - 4320 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Lead-214 1480 1490 626 - 2340 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Manganese-54 <27.4 <1000 <1000 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Plutonium-238 1230 1250 623 - 1900 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Plutonium-239 1440 1450 790 - 2090 Acceptable 17000 -

ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Potassium-40 25600 24700 29500 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Strontium-90 8770 6090 1900 - 9490 Acceptable 99

ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Thorium-234 3350 2720 1030 - 4660 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-234 2620 2740 1280 - 3590 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-234 3260 2740 1280 - 3590 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-238 2870 2720 1490 - 3650 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-238 3400 2720 1490 - 3650 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-Total 5670 5580 3100 - 7210 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-Total 5670 5580 3100 - 7210 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Uranium-Total 6817 5580 3100 - 7210 Acceptable 3670 -

ERA 4th/2021 11/23/21 MRAD-35 Soil µg/kg Uranium (mass) 8630 8140 11000 Acceptable 3670 -

ERA 4th/2021 11/23/21 MRAD-35 Soil µg/kg Uranium (mass) 10200 8140 11000 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Soil pCi/kg Zinc-65 5540 4860 3880 - 6630 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Americium-241 4040 4040 2500 - 5710 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cesium-134 918 923 613 - 1230 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cesium-137 2180 2210 1700 - 2980 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cobalt-60 1670 1590 1250 - 2080 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Cobalt-60 1670 1590 1250 - 2080 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Curium-244 2830 2840 1600 - 3530 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Manganese-54 <47.1 <300 <300 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Plutonium-238 1730 1620 1120 - 2090 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Plutonium-239 1620 1440 995 - 1820 Acceptable 25000 -

ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Potassium-40 30200 33300 42200 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Strontium-90 5760 5720 3220 - 7450 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Uranium-234 1410 1350 948 - 1720 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Uranium-238 1420 1340 946 - 1680 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Uranium-Total 2900 2750 1760 - 3710 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg µg/kg Uranium (mass) 4250 4010 3080 - 4970 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Veg pCi/kg Zinc-65 1340 1200 896 - 1780 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Americium-241 28.1 27.7 19.8 - 36.9 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cesium-134 217 241 156 - 296 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cesium-137 187 187 154 - 245 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cobalt-60 324 310 264 - 394 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Cobalt-60 324 310 264 - 394 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Iron-55 508 548 200 - 874 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Manganese-54 <3.06 <50.0 <50.0 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Plutonium-238 27.8 28.5 21.5 - 35.0 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Plutonium-239 22.6 21.6 16.1 - 26.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Strontium-90 23.4* 19.2 12.1 - 26.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-234 7.96 7.76 5.75 - 9.09 Acceptable Not ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-234 9.62* 7.76 5.75 - 9.09 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-238 7.35 7.69 5.81 - 9.17 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-238 7.38 7.69 5.81 - 9.17 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-Total 15.8 15.8 11.5 - 18.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Uranium-Total 17 15.8 11.5 - 18.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter µg/Filter Uranium (mass) 22.1 23.1 18.5 - 27.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter µg/Filter Uranium (mass) 22.1 23.1 18.5 - 27.1 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Zinc-65 414 366 300 - 559 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Gross Alpha 95.4 77.6 40.5 - 128 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Filter pCi/Filter Gross Beta 87 80.6 48.9 - 122 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Americium-241 70.5 63.7 43.7 - 81.5 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Cesium-134 626 649 490 - 714 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Cesium-137 2210 2170 1860 - 2470 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Cobalt-60 1040 964 831 - 1110 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Iron-55 339* 246 145 - 358 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Plutonium-238 74.1 114 68.5 - 148 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Plutonium-239 21.3 34.3 21.2 - 42.3 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Strontium-90 915 936 674 - 1160 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-234 39.9 40.8 31.1 - 46.7 Acceptable 100

Not ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-234 49.8* 40.8 31.1 - 46.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-238 40.3 40.5 31.4 - 47.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-238 41.2 40.5 31.4 - 47.7 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-Total 83.1 83.2 64.9 - 94.8 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Uranium-Total 92.9* 83.2 64.9 - 94.8 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water µg/L Uranium (mass) 121 121 98.0 - 137 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water µg/L Uranium (mass) 123 121 98.0 - 137 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Zinc-65 449 394 351 - 497 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Gross Alpha 74.7 93.9 34.3 - 129 Acceptable ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Gross Beta 96.1 97 48.5 - 133 Acceptable 9650 -

ERA 4th/2021 11/23/21 MRAD-35 Water pCi/L Tritium 12600 12800 15600 Acceptable 101

FIGURE 1 COBALT-60 PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Cobalt-60 Performance Evaluation Results and % Bias 100.0 75.0 50.0

____.__ Co-60 25.0 Upper Contol

% Bias 0.0 Limit Lower

-25.0 Control Limit

-50.0

-75.0

-100.0 January 2021- December 2021 102

FIGURE 2 CESIUM-137 PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Cesium-137 Performance Evaluation Results and % Bias 100.0 75.0 50.0 Series1 25.0

% Bias Series2 0.0

-25.0 Series3

-50.0

-75.0

-100.0 January 2021- December 2021 103

FIGURE 3 TRITIUM PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Tritium Performance Evaluation Results and % Bias 100.0 75.0 50.0 Tritium 25.0

% Bias Upper 0.0 Control Limit Lower

-25.0 Control Limit

-50.0

-75.0

-100.0 January 2021- December 2021 104

FIGURE 4 STRONTIUM-90 PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Strontium-90 Performance Evaluation Results and % Bias 100.0 50.0 Series1 Upper Control

% Bias 0.0 Limit Lower Control Limit

-50.0

-100.0 January 2021 - December 2021 105

FIGURE 5 GROSS ALPHA PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Gross Alpha Performance Evaluation Results and % Bias 100.0 50.0

____.__ Series1

% Bias 0.0 Series2 Series3

-50.0

-100.0 January 2021 - December 2021 106

FIGURE 6 GROSS BETA PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Gross Beta Performance Evaluation Results and % Bias 100.0 50.0

.-- Series1

% Bias

-50.0 0.0 A .., /

Series2 Series3

-100.0 January 2021 - December 2021 107

FIGURE 7 IODINE-131 PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Iodine-131 Performance Evaluation Results and % Bias 100.0 75.0 50.0 Iodine-131 25.0

% Bias Upper 0.0 Control Limit Lower

-25.0 Control Limit

-50.0

-75.0

-100.0 January 2021- December 2021 108

FIGURE 8 AMERICIUM-241 PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Americium-241 Performance Evaluation Results and % Bias 100.0 75.0 50.0 Am-241 25.0

% Bias - Lower 0.0 -- Control Limit Upper

-25.0 Control Limit

-50.0

-75.0

-100.0 January 2021- December 2021 109

FIGURE 9 PLUTONIUM-238 PERFORMANCE EVALUATION RESULTS AND % BIAS 2021 Plutonium-238 Performance Evaluation Results and % Bias 100.0 75.0 50.0 25.0 --- Plutonium-238 Upper

% Bias 0.0 Control Limit Lower

-25.0 Control Limit

-50.0

-75.0

-100.0 January 2021 December 2021 110

TABLE 6 REMP INTRA-LABORATORY DATA

SUMMARY

BIAS AND PRECISION BY MATRIX Bias Criteria (+ / - 25% Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE 2021 REMP Intralab Results CRITERIA CRITERIA CRITERIA CRITERIA MILK Gas Flow Sr 2nd count 54 0 59 1 Gas Flow Total Strontium 12 0 13 0 Gamma Spec Liquid RAD A-013 with Ba, La 32 0 105 0 Gamma Spec Liquid RAD A-013 with Iodine 0 0 2 0 SOLID Gamma Spec Solid RAD A-013 6 0 9 0 LSC Nickel 63 3 0 3 0 Gas Flow Sr 2nd count 5 0 8 0 Gas Flow Total Strontium 3 0 3 0 Gamma Spec Solid RAD A-013 with Iodine 16 0 37 0 FILTER Gross A & B 388 0 248 0 Gamma Spec Filter 35 0 78 0 LIQUID Tritium 192 0 249 0 LSC Iron-55 14 0 14 0 LSC Nickel 63 14 0 14 0 Gamma Iodine-131 1 0 1 0 Gas Flow Sr 2nd count 6 0 5 0 Gas Flow Total Strontium 13 0 15 0 Gross Alpha Non Vol Beta 23 0 71 0 Gamma Spec Liquid RAD A-013 with Ba, La 74 0 146 0 Gamma Spec Liquid RAD A-013 with Iodine 17 0 74 0 TISSUE Gas Flow Sr 2nd count 9 0 11 0 Gas Flow Total Strontium 5 0 5 0 Gamma Spec Solid RAD A-013 with Iodine 15 0 15 0 VEGETATION Gamma Spec Solid RAD A-013 10 0 10 0 Gas Flow Sr 2nd count 10 0 8 0 Gamma Spec Solid RAD A-013 with Iodine 73 0 102 0 AIR CHARCOAL 111

Carbon-14 (Ascarite/Soda Lime Filter per Liter) I 29 I 0 I 28 I 0 DRINKING WATER Tritium 23 0 24 0 LSC Iron-55 7 0 7 0 LSC Nickel 63 8 0 8 0 Gamma Iodine-131 16 0 14 0 Gas Flow Sr 2nd count 9 0 10 0 Gas Flow Total Strontium 10 0 8 0 Gross Alpha Non Vol Beta 64 0 58 0 Gamma Spec Liquid RAD A-013 with Ba, La 20 0 60 0 0

Gamma Spec Liquid RAD A-013 with Iodine 0 0 4 Total 1245 1557 Note 1: The RPD must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPD must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC, then the RPD can be calculated using the MDC for the result of the one below the MDC. The RPD must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPD must be less than or equal to 20%. If both results are below MDC, then the limits on % RPD are not applicable.

112

TABLE 7 ALL RADIOLOGICAL INTRA-LABORATORY DATA

SUMMARY

BIAS AND PRECISION BY MATRIX:

Bias Criteria (+ / - 25% Precision Criteria (Note 1)

WITHIN OUTSIDE WITHIN OUTSIDE 2021 All Rad Intralab Results CRITERIA CRITERIA CRITERIA CRITERIA MILK Gamma Spec Liquid RAD A-013 4 0 4 0 Gamma Iodine-129 5 0 5 0 Gamma Iodine-131 8 0 119 0 LSC Sulfur 35 1 0 2 0 Gas Flow Sr 2nd count 54 0 59 0 Gas Flow Strontium 90 8 0 8 0 Gas Flow Total Strontium 12 0 13 0 Gamma Spec Liquid RAD A-013 with Ba, La 32 0 105 0 Gamma Spec Liquid RAD A-013 with Iodine 4 0 4 0 SOLID Gamma Percent Leach 6 0 0 0 Gas Flow Radium 228 93 0 100 0 Alpha Spec Neptunium 680 0 685 0 Tritium 398 0 479 0 Tritium by Pyrolysis 0 0 1 0 Carbon-14 250 0 334 0 Carbon-14 by Pyrolysis 0 0 1 0 LSC Iron-55 110 0 115 0 Alpha Spec Polonium Solid 23 0 28 0 Gamma Nickel 59 RAD A-022 145 0 149 0 Gamma Spec Ra226 RAD A-013 10 0 9 0 Gamma Spec Solid RAD A-013 1448 0 1867 0 LSC Nickel 63 256 0 279 0 LSC Plutonium 207 0 222 0 Technetium-99 667 0 764 0 Gamma Spec Liquid RAD A-013 1 0 1 0 Gross Alpha Beta Soil Leach 80 0 86 0 ICP-MS Technetium-99 in Soil 3 0 3 0 LSC Selenium 79 31 0 33 0 Total Activity, 6 0 9 0 Tritium 32 0 33 0 113

Alpha Spec Am243 96 0 110 0 Gamma Iodine-129 103 0 159 0 Gross Alpha/Beta 1 0 1 0 Gas Flow Lead 210 32 0 34 0 Alpha Spec Uranium 814 0 942 0 LSC Promethium 147 4 0 5 0 LSC, Rapid Strontium 89 and 90 55 0 57 0 Alpha Spec Thorium 898 0 1017 0 ICP-MS Uranium-233, 234 in Solid 49 0 52 0 LSC Sulfur 35 3 0 3 0 Alpha Spec Neptunium (pCi/Sample) 1 0 1 0 Alpha Spec Plutonium 759 0 762 0 ICP-MS Technetium-99 Prep in Soil 4 0 3 0 LSC Calcium 45 0 0 1 0 Alpha Spec Plutonium 162 0 174 0 Alpha Spec Radium 226 37 0 46 0 Gas Flow Sr 2nd count 17 0 24 0 Gas Flow Strontium 90 359 0 365 0 Lucas Cell Radium 226 225 0 261 0 Total Activity Screen 1 0 1 0 Alpha Spec Am241 Curium 613 0 602 0 Alpha Spec Total Uranium 81 0 93 0 Gas Flow Total Strontium 105 0 103 0 ICP-MS Uranium-233, 234 Prep in Solid 48 0 52 0 ICP-MS Uranium-235, 236, 238 in Solid 53 0 55 0 Alpha Spec Polonium Solid 14 0 14 0 Gamma Spec Solid RAD A-013 with Iodine 16 0 37 0 GFC Chlorine-36 in Solids 17 0 19 0 Gamma Spec Solid RAD A-013 (pCi/Sample) 1 0 2 0 Technetium-99 1 0 1 0 Tritium 10 0 10 0 Alpha Spec Am241 (pCi/Sample) 1 0 1 0 ICP-MS Uranium-234, 235, 236, 238 in Solid 350 0 361 0 ICP-MS Uranium-235, 236, 238 Prep in Solid 51 0 55 0 Alpha Spec Thorium 1 0 1 0 Gross Alpha/Beta (Am/Cs Calibration) Solid 2 0 3 0 ICP-MS U-234, 235, 236, 238 Prep per sample 8 0 8 0 Gross Alpha/Beta 493 0 592 0 114

Alpha Spec Plutonium 1 0 1 0 Gas Flow Strontium 90 1 0 1 0 Gross Alpha/Beta (Americium Calibration)

Solid 2 0 2 0 ICP-MS Uranium-234, 235, 236, 238 Prep in Solid 181 0 176 0 Gross Alpha Beta (F,U) 17 0 18 0 FILTER Alpha Spec Polonium 1 0 10 0 Gamma I-131, filter 4 0 4 0 Alpha Spec Neptunium 73 0 94 0 LSC Plutonium Filter 88 0 125 0 Tritium 28 0 157 0 Alpha Spec Californium 2 0 3 0 Carbon-14 Direct Count 0 0 9 0 Carbon-14 0 0 75 0 ICP-MS Tc-99 in Filter 0 0 5 0 Nickel-63 0 0 20 0 LSC Iron-55 56 0 65 0 Gamma Nickel 59 RAD A-022 77 0 83 0 Alpha Spec Californium FPL 10 0 12 0 LSC Nickel 63 63 0 75 0 Technetium-99 9 0 101 0 Gamma Spec Filter RAD A-013 165 0 220 0 ICP-MS Tc-99 Prep in Filter 0 0 5 0 LSC Selenium 79 4 0 5 0 Alphaspec Np Filter per Liter 5 0 19 0 Alphaspec Pu Filter per Liter 10 0 18 0 Gamma Iodine-129 10 0 63 0 Alpha Spec Am243 17 0 32 0 Gas Flow Lead 210 1 0 2 0 Alpha Spec Uranium 85 0 119 0 LSC, Rapid Strontium 89 and 90 76 0 84 0 Alpha Spec Thorium 45 0 78 0 Gas Flow Radium 228 6 0 10 0 Alpha Spec Plutonium 66 0 142 0 ICP-MS Uranium-233, 234 in Filter 1 0 7 0 Alpha Spec Plutonium 79 0 118 0 Alpha Spec Plutonium 3 0 3 0 Alpha Spec Polonium,(Filter/Liter) 0 0 2 0 Alpha Spec Radium 226 3 0 10 0 115

Gas Flow Sr 2nd Count 25 0 45 0 Gas Flow Strontium 90 61 0 110 1 Gas Flow Total Radium 2 0 5 0 LSC Plutonium 241 Filter per Liter 7 0 29 0 Lucas Cell Radium-226 5 0 6 0 Alpha Spec Am241Curium 122 0 195 0 Gas Flow Total Strontium 0 0 1 0 ICP-MS Uranium-233, 234 Prep in Filter 1 0 7 0 ICP-MS Uranium-235, 236, 238 in Filter 11 0 15 0 Total Activity in Filter, 0 0 9 0 Alphaspec Am241 Curium Filter per Liter 13 0 45 0 Tritium 91 0 125 0 GFC Chlorine-36 in Filters 1 0 9 0 Gamma Spec Filter RAD A-013 Direct Count 3 0 9 0 Carbon-14 15 0 25 0 Gross A & B (Americium Calibration) Liquid 2 0 36 0 Direct Count-Gross Alpha/Beta 74 0 0 0 Gross Alpha/Beta 23 0 37 0 ICP-MS Uranium-234, 235, 236, 238 in Filter 12 0 60 0 ICP-MS Uranium-235, 236, 238 Prep in Filter 8 0 15 0 Alpha Spec U 19 0 51 0 Gross A & B 418 0 314 0 LSC Iron-55 11 0 17 0 Technetium-99 14 0 32 0 Gas Flow Sr-90 8 0 31 0 LSC Nickel 63 31 0 38 0 Gamma Spec Charcoal 2 0 2 0 Gas Flow Pb-210 0 0 17 0 Gas Flow Ra-228 0 0 18 0 Gross Alpha Beta (Flame, Unflame) 11 0 12 0 Gamma Iodine 129 16 0 16 0 ICP-MS Uranium-234, 235, 236, 238 Prep in Filter 6 0 30 0 Gamma Spec Filter 86 0 137 0 Lucas Cell Ra-226 5 0 24 0 Alpha Spec Thorium 6 0 31 0 LIQUID Alpha Spec Uranium 550 0 811 0 Alpha Spec Polonium 9 0 13 0 Alpha Spec Neptunium 230 0 332 0 116

Tritium 1216 0 1259 0 Carbon-14 156 0 185 0 Plutonium 100 0 118 0 Chlorine-36 in Liquids 1 0 1 0 Iodine-131 4 0 4 0 LSC Iron-55 68 0 124 0 Gamma Nickel 59 RAD A-022 21 0 27 0 Gamma Iodine 131 RAD A-013 1 0 3 0 LSC Nickel 63 114 0 157 0 LSC Radon 222 10 0 10 0 Technetium-99 601 0 714 0 Gamma Spec Liquid RAD A-013 815 0 914 0 Alpha Spec Total U RAD A-011 55 0 72 0 LSC Selenium 79 40 0 40 0 Total Activity, 8 0 9 0 Alpha Spec Am243 10 0 25 0 Gamma Iodine-129 184 0 199 0 Gamma Iodine-131 1 0 1 0 ICP-MS Technetium-99 in Water 3 0 8 0 Gas Flow Lead 210 9 0 20 0 Gross Alpha, Beta 3 0 3 0 LSC Promethium 147 17 0 17 0 LSC, Rapid Strontium 89 and 90 9 0 9 0 Alpha Spec Polonium 2 0 5 0 Alpha Spec Thorium 250 0 393 0 Gas Flow Radium 228 6 0 5 0 Gas Flow Radium 228 537 0 645 0 Alpha Spec Plutonium 401 0 545 0 LSC Sulfur 35 16 0 15 0 Alpha Spec Plutonium 27 0 40 0 Alpha Spec Radium 226 45 0 46 0 Gas Flow Sr 2nd count 65 0 108 0 Gas Flow Strontium 90 318 0 387 0 Gas Flow Strontium 90 10 0 10 0 Gas Flow Total Radium 333 0 281 0 ICP-MS Technetium-99 Prep in Water 3 0 8 0 ICP-MS Uranium-233, 234 in Liquid 7 0 11 0 LSC Calcium 45 13 0 13 0 Lucas Cell Radium 226 317 0 502 0 Lucas Cell Radium-226 7 0 10 0 117

Total Activity Screen 0 0 1 0 Chlorine-36 in Liquids 19 0 21 0 Gamma Spec Drinking Water RAD A-013 8 0 6 0 Alpha Spec Am241 Curium 353 0 463 0 Gas Flow Total Strontium 118 0 125 0 Gross Alpha Non Vol Beta 722 0 974 0 LSC Phosphorus-32 6 0 8 0 ICP-MS Uranium-233, 234 Prep in Liquid 7 0 11 0 Tritium in Drinking Water by EPA 906.0 9 0 6 0 Gamma Spec Liquid RAD A-013 with Ba, La 76 0 155 0 Gamma Spec Liquid RAD A-013 with Iodine 76 0 157 0 Gas Flow Strontium 89 & 90 6 0 5 0 ICP-MS Uranium-235, 236, 238 in Liquid 10 0 19 0 Gas Flow Total Alpha Radium 9 0 9 0 Gross Alpha Co-precipitation 5 0 9 0 ICP-MS Uranium-235, 236, 238 Prep in Liquid 9 0 19 0 Gross Alpha/Beta 1 0 5 0 ICP-MS Uranium-234, 235, 236, 238 in Liquid 108 0 104 0 Gross Alpha Beta (Flame, Unflame) 253 0 269 0 Gross Alpha Beta (Americium Calibration)

Liquid 32 0 74 0 ICP-MS Uranium-234, 235, 236, 238 Prep in Liquid 52 0 56 0 Alpha/Beta (Americium Calibration) Drinking Water 35 0 27 0 ECLS-R-GA NJ 48 Hr Rapid Gross Alpha 1 0 1 0 TISSUE Alpha Spec Neptunium 0 0 13 0 Tritium 7 0 19 0 Carbon-14 2 0 13 0 Gamma Nickel 59 RAD A-022 2 0 2 0 Gamma Spec Solid RAD A-013 54 0 77 0 LSC Nickel 63 2 0 2 0 LSC Plutonium 2 0 2 0 Technetium-99 2 0 15 0 Gamma Iodine-129 6 0 19 0 Gas Flow Lead 210 2 0 13 0 Alpha Spec Uranium 8 0 24 0 Alpha Spec Thorium 2 0 14 0 Alpha Spec Plutonium 5 0 19 0 118

Alpha Spec Plutonium 2 0 2 0 Gas Flow Sr 2nd count 9 0 11 0 Gas Flow Strontium 90 10 0 23 0 Lucas Cell Radium 226 3 0 12 0 Alpha Spec Am241 Curium 3 0 17 0 Gas Flow Total Strontium 5 0 5 0 Gamma Spec Solid RAD A-013 with Iodine 15 0 15 0 GFC Chlorine-36 in Solids 0 0 11 0 Gross Alpha/Beta 3 0 5 0 VEGETATION Carbon-14 3 0 3 0 Gamma Spec Solid RAD A-013 29 0 24 0 Technetium-99 1 0 1 0 Tritium 2 0 2 0 Gas Flow Lead 210 3 0 4 0 Alpha Spec Uranium 21 0 24 0 Alpha Spec Thorium 9 0 10 0 Alpha Spec Plutonium 21 0 14 0 Gas Flow Sr 2nd count 10 0 8 0 Gas Flow Strontium 90 22 0 16 0 Gas Flow Total Radium 3 0 4 0 Alpha Spec Am241 Curium 9 0 7 0 Gamma Spec Solid RAD A-013 with Iodine 73 0 102 0 Gamma Spec Solid RAD A-013 (pCi/Sample) 2 0 2 0 Alpha Spec Am241 (pCi/Sample) 0 0 2 0 Alpha Spec Uranium 0 0 2 0 Gross Alpha/Beta 7 0 6 0 Alpha Spec Plutonium 0 0 2 0 Gas Flow Strontium 90 4 0 2 0 AIR CHARCOAL Gamma Iodine-129 23 0 8 0 Carbon-14 11 0 11 0 Carbon-14 (Ascarite/Soda Lime Filter per Liter) 29 0 28 0 Gamma Spec Charcoal 14 0 14 0 Gamma Iodine 129 14 0 14 0 DRINKING WATER Alpha Spec Uranium 1 0 1 0 Tritium 23 0 24 0 Iodine-131 1 0 0 0 119

LSC Iron-55 7 0 7 0 LSC Nickel 63 8 0 8 0 LSC Radon 222 17 0 20 0 Gamma Spec Liquid RAD A-013 3 0 3 0 Gamma Iodine-129 2 0 3 0 Gamma Iodine-131 16 0 14 0 Gas Flow Radium 228 41 0 37 0 Gas Flow Sr 2nd count 9 0 10 0 Gas Flow Strontium 90 9 0 8 0 Lucas Cell Radium 226 3 0 4 0 Lucas Cell Radium-226 46 0 46 0 Gamma Spec Drinking Water RAD A-013 37 0 48 0 Gas Flow Total Strontium 10 0 8 0 Gross Alpha Non Vol Beta 159 0 138 0 Tritium in Drinking Water by EPA 906.0 41 0 42 0 Gamma Spec Liquid RAD A-013 with Ba, La 20 0 60 0 Gamma Spec Liquid RAD A-013 with Iodine 2 0 6 0 Gas Flow Strontium 89 & 90 11 0 7 0 Alpha/Beta (Americium Calibration) Drinking Water 11 0 12 0 0

ECLS-R-GA NJ 48 Hr Rapid Gross Alpha 2 0 2 Total 21797 26844 Note 1: The RPD must be 20 percent or less, if both samples are greater than 5 times the MDC. If both results are less than 5 times MDC, then the RPD must be equal to or less than 100%. If one result is above the MDC and the other is below the MDC, then the RPD can be calculated using the MDC for the result of the one below the MDC. The RPD must be 100% or less. In the situation where both results are above the MDC but one result is greater than 5 times the MDC and the other is less than 5 times the MDC, the RPD must be less than or equal to 20%. If both results are below MDC, then the limits on % RPD are not applicable.

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TABLE 8 2021 CORRECTIVE ACTION REPORT

SUMMARY

CORRECTIVE ACTION

& DISPOSITION PE FAILURE Summary of RAD-124 Drinking Water Study Unacceptable Ratings Upon receipt of the PT report, an investigation was initiated by the Quality Reported Reference Acceptance Department and a Corrective Action (CARR)

Sample ID Parm Value Value Range team assembled. The team consisted of Radium - representatives from the affected Naturals 8.42 pCi/L 15.5 pCi/L 11.5-17.8 pCi/L laboratories. The sample preparation and 226 analytical processes were reviewed. This Radium-included review of reagents and standards Naturals 19.5 pCi/L 12.9 pCi/L 8.54-15.8 pCi/L used in the sample preparation steps, 228 calibration records, process control samples, and interviews with the analysts.

Strontium Strontium-74.6 pCi/L 61.3 pCi/L 49.4-69.2 pCi/L 89/90 89 The investigation determined that the laboratory met all quality control criteria specified in each method. Additionally, all internal procedures and policies were performed as required.

These failures were tracked through GELs internal non-conformance system.

Root Cause(s):

Radium-226: The laboratory reviewed the data of the original analysis and no anomalies were noted. A review of the sample preparation processes, and data set did not reveal any gross errors or possible contributors to the low bias. It is possible that an unknown systematic error must have occurred during the precipitation steps of the procedure resulting in the low bias.

Radium-228: The Batch data was reviewed and low gravemetric yields were identified.

Ra-228 drinking water method includes two gravemetric yields and both yields were lower than normal for this method. It is apparent that the low yields, which are multiplied together to determine the final yield for the analysis, biased the result high. Original reported data was calculated with "typical" method yields obtaining result of 11.9 pCi/L (92% of known value). The low yields were not sample specific with MB and LCS yields being similar to the samples in the batch; therefore, an unknown systematic error must have occurred during the precipitation steps of the procedure that resulted in low yields.

Strontium-89: The result for Strontium-89 was 122% of the known value with the acceptance range limit of 114%. The Group Leader has reviewed the method to identify the bias. The method LCS trend was reviewed for the method and no anomalies were identified. The calibration used for the analysis was compared to the new calibration performed recently and the original reported 121

data was processed with both calibrations for comparison. Data was comparable.

Instrument run logs were reviewed and there was no indication of possible bias from run log. Sr89/90 drinking water method includes two gravemetric yields. Both gravemetric batch yields were reviewed and it was noted that the Yttrium yields appeared to be slightly higher than expected for this method. It is possible that the Yttrium yields were biased high due to analyst error during the drying process. The original reported data was processed with typically recovered Yttrium method yields and the Sr-89 value (65.8 pCi/L) was within the acceptance range at 108%.

Summary of RAD-125 Drinking Water Study Unacceptable Ratings Upon receipt of the PT report, an investigation was initiated by the Quality Reference Department and a Corrective Action Sample ID Parm Reported Value Value (CARR) Range Acceptance team assembled. The team consisted of representatives from the Naturals Radium-226 14.2 pCi/L 19.3 pCi/L affectedpCi/L 14.3-22.0 laboratories. The sample preparation and analytical processes were reviewed. This included review of reagents and standards used in the sample preparation steps, calibration records, process control samples, and interviews with the analysts.

The investigation determined that the laboratory met all quality control criteria specified in each method. Additionally, all internal procedures and policies were performed as required. These failures were tracked through GELs internal non-conformance system Summary of MRAD-34 Study Unacceptable Ratings Upon receipt of the PT report, an Reporte investigation Acceptance was initiated by the Quality Sample ID Parm d Value Reference Value Department Range and a Corrective Action (CARR) team assembled. The team Air Filter Gross 391 50.2-158 consisted of representatives from the Gross Alpha 96.1 pCi/F Alpha/Beta pCi/F pCi/F affected laboratories. The sample preparation and analytical processes were Water Gross 87.8 22.7-85.8 reviewed. This included review of reagents Gross Alpha 62.2 pCi.L Alpha/Beta pCi/L pCi/L and standards used in the sample preparation steps, calibration records, Water process control samples, and interviews 162-400 Iron-55 494 pCi/L 275 pCi/L Radionuclides with the analysts.

pCi/L The investigation determined that the laboratory met all quality control criteria specified in each method. Additionally, all 122

internal procedures and policies were performed as required. These failures were tracked through GELs internal non-conformance system Root Cause(s):

The results for this analysis were reviewed and it was noted that the result for the in-batch duplicate would have been acceptable recovering at 96% of the known value and met replication criteria. The laboratory investigated the transfer rig that was used to prep the unacceptable sample and noted loose fittings and cracked tubing.

These may have contributed to the low bias in the sample preparation. The transfer rig was rebuilt and the other rigs inspected for possible wear issues that may need to be rebuilt or replaced.

The laboratory successfully completed study RAD-126 for Ra-226 by 903.1 Summary of MAPEP 44 Study Unacceptable Ratings Upon receipt of the PT report, an investigation was initiated by the Quality Department and a Corrective Action Reference Acceptance Sample ID Parm Reported Value Value Range (CARR) team assembled. The team consisted of representatives from the MAPEP-21-MaS44 Antimony 27.3 mg/kg 78 mg/kg 55-101 mg/kg affected laboratories. The sample preparation and analytical processes were 3.6 2.52-4.68 reviewed. This included review of reagents MAPEP-21-RdV44 Cesium-134 2.51 Bq/samp. Bq/samp. Bq/samp. and standards used in the sample Strontium-90 0.444 Bq/samp. 0.673 0.471-0.875 preparation steps, calibration records, Bq/samp. Bq/samp.

process control samples, and interviews with the analysts.

The investigation determined that the laboratory met all quality control criteria specified in each method. Additionally, all internal procedures and policies were performed as required. These failures were tracked through GELs internal non-conformance system Root Cause(s):

MAPEP-21-MaS44: The sample was prepared using standard hot-acid leach per section 7.5 of SW-846 3050B. More rigorous digestions were used in an attempt to increase solubility without success. It is suspected that the low bias in the result is due to an unidentified matrix interferant.

123

MAPEP-21-RdV44: The data has been reviewed for these analyses and no errors were noted. The Cesium-134 and Strontium-90 failed with a low bias compared to the known. It was noted that several other reported isotopes had a low bias but were within the acceptance ranges for their parameters. It is suspected that the sample preparation had an unidentified error during the digestion process.

Summary of RAD-126 Study Unacceptable Ratings Upon receipt of the PT report, an investigation was initiated by the Quality Reported Acceptance Sample ID Parm Value Reference Value Range Department and a Corrective Action (CARR) team assembled. The team Rad Strontium Sr-90 46.2 pCi/L 40.1 pCi/L 29.5-46.1 pCi/L consisted of representatives from the affected laboratories. The sample I I I I I I preparation and analytical processes were reviewed. This included review of reagents and standards used in the sample preparation steps, calibration records, process control samples, and interviews with the analysts.

The investigation determined that the laboratory met all quality control criteria specified in each method. Additionally, all internal procedures and policies were performed as required. These failures were tracked through GELs internal non-conformance system Root Cause(s):

Strontium-90-A review of the sample preparation processes and data set did not reveal any gross errors or possible contributors to the high bias. The reported value is 115% of the reference value which is within the laboratorys standard acceptance criteria of +/- 25% for Laboratory Control Samples. In addition, the sample was prepared/reported by analytical method 905.0. The result was within acceptance limits with an RPD of 11.7 when compared to the unacceptable value.

Summary of MAPEP 45 Study Unacceptable Ratings Upon receipt of the PT report, an investigation was initiated by the Quality Department and a Corrective Reported Reference Acceptance Action (CARR) team assembled. The team Sample ID Parm Value Value Range consisted of representatives from the affected laboratories. The sample preparation and analytical 1.73 0.288-1.632 processes were reviewed. This included review of MAPEP-21-GrF45 Gross Alpha 0.960 Bq/S Bq/S Bq/S reagents and standards used in the sample preparation steps, calibration records, process MAPEP-21-MaS45 79.6 control samples, and interviews with the analysts.

Uranium-234 51.4 Bq/kg 36.0-66.8 Bq/kg (Radiological) Bq/kg The investigation determined that the laboratory met 0.00736 False positive all quality control criteria specified in each method.

Np-237 Bq/S NA test Additionally, all internal procedures and policies were MAPEP-21-MaSF45 Sr-90 (W) 0.482 0.6649 Bq/S 0.4654-0.8644 performed as required. These failures were tracked Bq/S Bq/S through GELs internal non-conformance system 124

MAPEP-21-MaW45 0.310 0.158-0.294 Ra-226 0.226 Bq/L (Radiological) Bq/L Bq/L 0.195 0.191-0.355 MAPEP-21-RdF45 Sr-90 (W) 0.273 Bq/S Bq/S Bq/S Root Cause:

MAPEP-21-GrF45: Gross Alpha: The data for this analysis has been reviewed and no errors were noted. It was found that the result from the original count for the sample preparation was within the acceptance limits of the study. The sample initially did not meet replication criteria for the in-batch duplicate and was recounted.

The duplicate sample was not recounted during the process.

MAPEP-21-MaS45 (radiological) U-234: The laboratory preparation and counting procedures were evaluated for potential contributors to the high bias of these results. None were noted and the batches met QC criteria for recovery and duplication.

MAPEP-21-MaSF45: Upon review, it is suspected that the bias in the Np result is due to an unidentified matrix interferant. The sample should have been returned to the lab for additional clean up steps. The Sr warning result recovered at 72.5% of the known value. The laboratory evaluated both the prep and instrument processes for possible causes for the low bias. A definitive cause was not determined.

MAPEP-21-MaW45 (Radiological):Ra-226: The data has been reviewed and no errors were found. It was noted that the in-batch duplicate sample result was within acceptance limits for the study. The samples met RER replication criteria.

MAPEP-21-RdF45: Sr: This warning result recovered at 71% of the known value. The laboratory evaluated both the prep and instrument processes for possible causes for the low bias. A definitive source was not determined.

This Sr warning result was analyzed in a separate laboratory than the synthetic fecal sample which uses an entirely separate processes for analysis.

Summary of MRAD-35 Study Unacceptable Ratings Upon receipt of the PT report, an investigation was initiated by the Quality Department and a Corrective Acceptance Action (CARR) team assembled. The team Sample ID Parm Reported Value Reference Value Range consisted of representatives from the affected Uranium-laboratories. The sample preparation and analytical Air Filter 9.62 pCi/F 7.76 pCi/F 5.75-9.09 pCi/F processes were reviewed. This included review of 234 reagents and standards used in the sample preparation steps, calibration records, process Uranium- control samples, and interviews with the analysts.

Water 49.6 pCi/L 40.8 pCi/L 31.1-46.7 pCi/L 234 The investigation determined that the laboratory met all quality control criteria specified in each method.

Additionally, all internal procedures and policies were performed as required. These failures were tracked through GELs internal non-conformance system Root Cause(s):

The laboratory reviewed the data and found no errors. It was noted that the sample was replicated 125

in the analysis batch and met replication criteria. For the water analysis, the result of the duplicate sample was within the acceptance range of the study. All analysis data met the acceptance QC criteria and procedures for initial calibration, continuing calibration, instrument controls and process controls were met.

126

12 GEL Sample Results The following section contains the sampling results as provided by GEL Laboratories, LLC.

Matrix

- --- Page Air Sample Results .............................................................. 128 Algae and Kelp Sample Results ........................................... 158 Drinking Water Sample Results .......................................... 161 Fish Sample Results ............................................................. 186 Groundwater Sample Results ............................................. 195 Meat Sample Results .......................................................... 204 Milk Sample Results ............................................................ 206 Mussel Sample Results........................................................ 209 Sea Water Sample Results .................................................. 213 Sediment Sample Results .................................................... 232 Vegetation Sample Results ................................................. 239 127

Air Sample Results 0S2 North Gate AC Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 0S2 North Gate(531169015) - AC 2-Jan-21 Iodine-131 -3.90E-04 8.11E-03 4.87E-03 pCi/m3 0S2 North Gate(531664019) - AC 9-Jan-21 Iodine-131 -7.02E-04 5.83E-03 3.74E-03 pCi/m3 0S2 North Gate(531711015) - AC 16-Jan-21 Iodine-131 -4.56E-03 4.43E-03 4.27E-03 pCi/m3 0S2 North Gate(532387015) - AC 23-Jan-21 Iodine-131 -1.61E-03 6.01E-03 3.89E-03 pCi/m3 0S2 North Gate(533988011) - AC 30-Jan-21 Iodine-131 7.81E-04 1.89E-02 1.18E-02 pCi/m3 0S2 North Gate(534289015) - AC 6-Feb-21 Iodine-131 4.66E-03 2.03E-02 1.09E-02 pCi/m3 0S2 North Gate(534516017) - AC 13-Feb-21 Iodine-131 -1.56E-03 8.27E-03 5.17E-03 pCi/m3 0S2 North Gate(535384015) - AC 20-Feb-21 Iodine-131 -2.77E-03 8.68E-03 5.72E-03 pCi/m3 0S2 North Gate(535390014) - AC 27-Feb-21 Iodine-131 5.79E-03 1.29E-02 7.04E-03 pCi/m3 0S2 North Gate(537221011) - AC 6-Mar-21 Iodine-131 6.01E-03 7.54E-03 6.01E-03 pCi/m3 0S2 North Gate(538236011) - AC 13-Mar-21 Iodine-131 3.24E-03 1.46E-02 8.07E-03 pCi/m3 0S2 North Gate(538482017) - AC 20-Mar-21 Iodine-131 -1.29E-03 8.79E-03 5.30E-03 pCi/m3 0S2 North Gate(538491008) - AC 27-Mar-21 Iodine-131 4.48E-03 1.04E-02 5.77E-03 pCi/m3 0S2 North Gate(539118019) - AC 3-Apr-21 Iodine-131 -4.29E-03 7.45E-03 5.46E-03 pCi/m3 0S2 North Gate(540194017) - AC 10-Apr-21 Iodine-131 1.35E-03 1.26E-02 7.12E-03 pCi/m3 0S2 North Gate(541232001) - AC 17-Apr-21 Iodine-131 2.99E-03 1.94E-02 1.08E-02 pCi/m3 0S2 North Gate(541392001) - AC 23-Apr-21 Iodine-131 2.11E-03 1.23E-02 6.90E-03 pCi/m3 0S2 North Gate(542714001) - AC 1-May-21 Iodine-131 6.65E-03 1.49E-02 7.85E-03 pCi/m3 0S2 North Gate(543541001) - AC 8-May-21 Iodine-131 -1.43E-03 1.04E-02 6.37E-03 pCi/m3 0S2 North Gate(544179001) - AC 15-May-21 Iodine-131 -1.56E-03 5.68E-03 3.75E-03 pCi/m3 0S2 North Gate(544763001) - AC 22-May-21 Iodine-131 2.71E-03 1.58E-02 9.39E-03 pCi/m3 0S2 North Gate(545393001) - AC 29-May-21 Iodine-131 -3.18E-03 1.24E-02 8.05E-03 pCi/m3 0S2 North Gate(546108001) - AC 5-Jun-21 Iodine-131 -2.03E-04 9.13E-03 5.34E-03 pCi/m3 0S2 North Gate(546499001) - AC 12-Jun-21 Iodine-131 -4.23E-03 8.10E-03 6.68E-03 pCi/m3 0S2 North Gate(547342001) - AC 19-Jun-21 Iodine-131 3.27E-03 1.31E-02 7.27E-03 pCi/m3 0S2 North Gate(547774001) - AC 26-Jun-21 Iodine-131 -5.31E-03 1.00E-02 7.24E-03 pCi/m3 0S2 North Gate(548921001) - AC 4-Jul-21 Iodine-131 -2.99E-03 7.70E-03 5.43E-03 pCi/m3 0S2 North Gate(548928001) - AC 11-Jul-21 Iodine-131 2.77E-03 9.48E-03 5.17E-03 pCi/m3 0S2 North Gate(549378001) - AC 18-Jul-21 Iodine-131 -1.58E-03 9.20E-03 5.86E-03 pCi/m3 0S2 North Gate(550005001) - AC 25-Jul-21 Iodine-131 -7.40E-04 5.82E-03 3.58E-03 pCi/m3 0S2 North Gate(550639001) - AC 1-Aug-21 Iodine-131 2.41E-03 1.07E-02 5.92E-03 pCi/m3 128

Air Sample Results 0S2 North Gate(552193001) - AC 7-Aug-21 Iodine-131 7.21E-03 1.45E-02 8.31E-03 pCi/m3 0S2 North Gate(552198001) - AC 14-Aug-21 Iodine-131 -3.89E-03 7.89E-03 5.72E-03 pCi/m3 0S2 North Gate(553263001) - AC 21-Aug-21 Iodine-131 -8.46E-03 1.03E-02 9.02E-03 pCi/m3 0S2 North Gate(553498001) - AC 28-Aug-21 Iodine-131 3.27E-03 8.63E-03 4.75E-03 pCi/m3 0S2 North Gate(555509001) - AC 4-Sep-21 Iodine-131 -5.41E-03 1.58E-02 1.04E-02 pCi/m3 0S2 North Gate(555390001) - AC 11-Sep-21 Iodine-131 1.23E-03 1.19E-02 6.69E-03 pCi/m3 0S2 North Gate(556242001) - AC 18-Sep-21 Iodine-131 3.86E-04 7.42E-03 4.37E-03 pCi/m3 0S2 North Gate(556927001) - AC 25-Sep-21 Iodine-131 -3.36E-03 6.01E-03 4.59E-03 pCi/m3 0S2 North Gate(557550001) - AC 2-Oct-21 Iodine-131 1.02E-03 1.25E-02 7.06E-03 pCi/m3 0S2 North Gate(558462001) - AC 9-Oct-21 Iodine-131 2.56E-03 1.47E-02 8.09E-03 pCi/m3 0S2 North Gate(559199001) - AC 16-Oct-21 Iodine-131 -1.70E-03 1.20E-02 7.40E-03 pCi/m3 0S2 North Gate(559947001) - AC 23-Oct-21 Iodine-131 3.33E-03 1.52E-02 1.22E-02 pCi/m3 0S2 North Gate(560662001) - AC 30-Oct-21 Iodine-131 -3.58E-03 1.15E-02 7.80E-03 pCi/m3 0S2 North Gate(561359001) - AC 6-Nov-21 Iodine-131 -6.12E-04 1.00E-02 5.92E-03 pCi/m3 0S2 North Gate(562118001) - AC 13-Nov-21 Iodine-131 -5.62E-04 8.57E-03 5.31E-03 pCi/m3 0S2 North Gate(562868001) - AC 20-Nov-21 Iodine-131 4.00E-03 1.01E-02 5.60E-03 pCi/m3 0S2 North Gate(563354001) - AC 28-Nov-21 Iodine-131 -1.43E-03 7.96E-03 4.96E-03 pCi/m3 0S2 North Gate(564002001) - AC 5-Dec-21 Iodine-131 -1.24E-04 8.39E-03 4.93E-03 pCi/m3 0S2 North Gate(564761001) - AC 11-Dec-21 Iodine-131 6.00E-04 6.65E-03 3.70E-03 pCi/m3 0S2 North Gate(565497001) - AC 18-Dec-21 Iodine-131 1.17E-04 9.29E-03 5.61E-03 pCi/m3 0S2 North Gate(565929001) - AC 25-Dec-21 Iodine-131 -2.10E-03 1.40E-02 8.62E-03 pCi/m3 0S2 North Gate AC14 Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 0S2 North Gate(531169019) - AC14 2-Jan-21 Carbon-14 -6.58E-08 1.11E-07 6.50E-08 uCi/m3 0S2 North Gate(531664021) - AC14 9-Jan-21 Carbon-14 3.05E-08 1.24E-07 7.44E-08 uCi/m3 0S2 North Gate(531711017) - AC14 16-Jan-21 Carbon-14 -6.38E-08 1.02E-07 5.96E-08 uCi/m3 0S2 North Gate(532387017) - AC14 23-Jan-21 Carbon-14 -8.46E-08 1.48E-07 8.68E-08 uCi/m3 0S2 North Gate(533988008) - AC14 30-Jan-21 Carbon-14 6.63E-08 1.27E-07 7.75E-08 uCi/m3 0S2 North Gate(534289017) - AC14 6-Feb-21 Carbon-14 -1.46E-09 1.03E-07 6.11E-08 uCi/m3 0S2 North Gate(534516019) - AC14 13-Feb-21 Carbon-14 4.12E-08 1.04E-07 6.27E-08 uCi/m3 0S2 North Gate(535384017) - AC14 20-Feb-21 Carbon-14 1.24E-08 1.08E-07 6.43E-08 uCi/m3 0S2 North Gate(535390016) - AC14 27-Feb-21 Carbon-14 -8.07E-09 1.04E-07 6.20E-08 uCi/m3 129

Air Sample Results 0S2 North Gate(537221008) - AC14 6-Mar-21 Carbon-14 5.22E-08 1.22E-07 7.37E-08 uCi/m3 0S2 North Gate(538236008) - AC14 13-Mar-21 Carbon-14 5.88E-08 9.65E-08 5.87E-08 uCi/m3 0S2 North Gate(538482019) - AC14 20-Mar-21 Carbon-14 -3.87E-09 9.78E-08 5.82E-08 uCi/m3 0S2 North Gate(538491010) - AC14 27-Mar-21 Carbon-14 8.85E-08 1.02E-07 6.25E-08 uCi/m3 0S2 North Gate(539118021) - AC14 3-Apr-21 Carbon-14 -4.68E-08 1.23E-07 7.22E-08 uCi/m3 0S2 North Gate(540194019) - AC14 10-Apr-21 Carbon-14 6.31E-08 9.08E-08 5.53E-08 uCi/m3 0S2 North Gate(541232003) - AC14 17-Apr-21 Carbon-14 6.14E-08 1.17E-07 7.11E-08 uCi/m3 0S2 North Gate(541392003) - AC14 23-Apr-21 Carbon-14 1.57E-08 1.01E-07 6.05E-08 uCi/m3 0S2 North Gate(542714003) - AC14 1-May-21 Carbon-14 -6.52E-09 9.00E-08 5.35E-08 uCi/m3 0S2 North Gate(543541003) - AC14 8-May-21 Carbon-14 7.82E-08 1.40E-07 8.44E-08 uCi/m3 0S2 North Gate(544179003) - AC14 15-May-21 Carbon-14 5.34E-09 1.07E-07 6.37E-08 uCi/m3 0S2 North Gate(544763003) - AC14 22-May-21 Carbon-14 -1.80E-08 1.25E-07 7.41E-08 uCi/m3 0S2 North Gate(545393003) - AC14 29-May-21 Carbon-14 6.43E-09 1.24E-07 7.37E-08 uCi/m3 0S2 North Gate(546108003) - AC14 5-Jun-21 Carbon-14 5.33E-08 1.48E-07 8.91E-08 uCi/m3 0S2 North Gate(546499003) - AC14 12-Jun-21 Carbon-14 3.50E-08 1.06E-07 6.35E-08 uCi/m3 0S2 North Gate(547342003) - AC14 19-Jun-21 Carbon-14 9.80E-08 1.22E-07 7.42E-08 uCi/m3 0S2 North Gate(547774003) - AC14 26-Jun-21 Carbon-14 3.40E-08 1.20E-07 7.18E-08 uCi/m3 0S2 North Gate(548921003) - AC14 4-Jul-21 Carbon-14 -2.51E-08 1.13E-07 6.69E-08 uCi/m3 0S2 North Gate(548928003) - AC14 11-Jul-21 Carbon-14 1.28E-08 1.15E-07 6.89E-08 uCi/m3 0S2 North Gate(549378003) - AC14 18-Jul-21 Carbon-14 4.56E-08 1.09E-07 6.55E-08 uCi/m3 0S2 North Gate(550005003) - AC14 25-Jul-21 Carbon-14 -6.28E-09 1.12E-07 6.69E-08 uCi/m3 0S2 North Gate(550639003) - AC14 1-Aug-21 Carbon-14 1.76E-08 1.40E-07 8.40E-08 uCi/m3 0S2 North Gate(552193003) - AC14 7-Aug-21 Carbon-14 9.02E-08 1.11E-07 6.75E-08 uCi/m3 0S2 North Gate(552198003) - AC14 14-Aug-21 Carbon-14 1.37E-09 1.23E-07 7.33E-08 uCi/m3 0S2 North Gate(553263003) - AC14 21-Aug-21 Carbon-14 9.38E-08 1.32E-07 8.01E-08 uCi/m3 0S2 North Gate(553498003) - AC14 28-Aug-21 Carbon-14 -4.04E-08 2.83E-07 1.67E-07 uCi/m3 0S2 North Gate(555509003) - AC14 4-Sep-21 Carbon-14 -9.48E-09 3.12E-07 1.86E-07 uCi/m3 0S2 North Gate(555390003) - AC14 11-Sep-21 Carbon-14 -1.69E-07 4.27E-07 2.49E-07 uCi/m3 0S2 North Gate(556242003) - AC14 18-Sep-21 Carbon-14 -6.94E-08 2.40E-07 1.41E-07 uCi/m3 0S2 North Gate(556927003) - AC14 25-Sep-21 Carbon-14 1.41E-08 2.54E-07 1.52E-07 uCi/m3 0S2 North Gate(557550003) - AC14 2-Oct-21 Carbon-14 1.79E-07 3.00E-07 1.85E-07 uCi/m3 0S2 North Gate(558462003) - AC14 9-Oct-21 Carbon-14 2.12E-08 1.94E-07 1.16E-07 uCi/m3 0S2 North Gate(559199003) - AC14 16-Oct-21 Carbon-14 1.67E-07 2.34E-07 1.45E-07 uCi/m3 0S2 North Gate(559947003) - AC14 23-Oct-21 Carbon-14 -1.38E-08 2.62E-07 1.56E-07 uCi/m3 130

Air Sample Results 0S2 North Gate(560662003) - AC14 30-Oct-21 Carbon-14 6.07E-08 2.49E-07 1.51E-07 uCi/m3 0S2 North Gate(561359003) - AC14 6-Nov-21 Carbon-14 9.21E-08 2.75E-07 1.67E-07 uCi/m3 0S2 North Gate(562118003) - AC14 13-Nov-21 Carbon-14 1.02E-07 2.45E-07 1.49E-07 uCi/m3 0S2 North Gate(562868003) - AC14 20-Nov-21 Carbon-14 -3.13E-08 3.50E-07 2.07E-07 uCi/m3 0S2 North Gate(563354003) - AC14 28-Nov-21 Carbon-14 -1.57E-07 3.50E-07 2.03E-07 uCi/m3 0S2 North Gate(564002003) - AC14 5-Dec-21 Carbon-14 1.39E-07 2.37E-07 1.46E-07 uCi/m3 0S2 North Gate(564761003) - AC14 11-Dec-21 Carbon-14 -4.17E-08 2.26E-07 1.33E-07 uCi/m3 0S2 North Gate(565497003) - AC14 18-Dec-21 Carbon-14 -1.41E-08 2.39E-07 1.42E-07 uCi/m3 0S2 North Gate(565929003) - AC14 25-Dec-21 Carbon-14 -5.40E-08 2.33E-07 1.37E-07 uCi/m3 0S2 North Gate AP Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 0S2 North Gate(531169016) - AP 2-Jan-21 BETA 1.88E-02 2.14E-03 1.11E-02 pCi/m3 0S2 North Gate(531664020) - AP 9-Jan-21 BETA 2.58E-02 2.29E-03 1.17E-02 pCi/m3 0S2 North Gate(531711016) - AP 16-Jan-21 BETA 3.90E-02 2.20E-03 1.23E-02 pCi/m3 0S2 North Gate(532387016) - AP 23-Jan-21 BETA 1.64E-02 2.56E-03 1.37E-02 pCi/m3 0S2 North Gate(533988001) - AP 30-Jan-21 BETA 1.07E-02 2.05E-03 9.91E-03 pCi/m3 0S2 North Gate(534289016) - AP 6-Feb-21 BETA 1.91E-02 2.40E-03 1.12E-02 pCi/m3 0S2 North Gate(534516018) - AP 13-Feb-21 BETA 9.65E-03 2.49E-03 1.10E-02 pCi/m3 0S2 North Gate(540519002) - AP 13-Feb-21 Cesium-134 -1.14E-04 3.60E-04 2.32E-04 pCi/m3 0S2 North Gate(540519002) - AP 13-Feb-21 Cesium-137 3.58E-05 3.68E-04 2.21E-04 pCi/m3 0S2 North Gate(535384016) - AP 20-Feb-21 BETA 1.59E-02 2.04E-03 1.09E-02 pCi/m3 0S2 North Gate(535390015) - AP 27-Feb-21 BETA 1.94E-02 2.17E-03 1.10E-02 pCi/m3 0S2 North Gate(537221001) - AP 6-Mar-21 BETA 2.44E-02 2.60E-03 1.27E-02 pCi/m3 0S2 North Gate(538236001) - AP 13-Mar-21 BETA 9.71E-03 2.06E-03 1.01E-02 pCi/m3 0S2 North Gate(538482018) - AP 20-Mar-21 BETA 1.01E-02 2.29E-03 1.15E-02 pCi/m3 0S2 North Gate(538491009) - AP 27-Mar-21 BETA 1.32E-02 2.16E-03 1.15E-02 pCi/m3 0S2 North Gate(539118020) - AP 3-Apr-21 BETA 3.06E-02 2.53E-03 1.19E-02 pCi/m3 0S2 North Gate(540194018) - AP 10-Apr-21 BETA 1.41E-02 2.02E-03 9.25E-03 pCi/m3 0S2 North Gate(541232002) - AP 17-Apr-21 BETA 2.21E-02 2.97E-03 1.45E-02 pCi/m3 0S2 North Gate(541392002) - AP 23-Apr-21 BETA 1.11E-02 2.43E-03 1.06E-02 pCi/m3 0S2 North Gate(542714002) - AP 1-May-21 BETA 7.94E-03 2.00E-03 8.47E-03 pCi/m3 0S2 North Gate(543541002) - AP 8-May-21 BETA 7.37E-03 3.11E-03 1.39E-02 pCi/m3 131

Air Sample Results 0S2 North Gate(544179002) - AP 15-May-21 BETA 9.93E-03 1.98E-03 8.50E-03 pCi/m3 0S2 North Gate(550067001) - AP 15-May-21 Cesium-134 2.58E-05 4.98E-04 2.83E-04 pCi/m3 0S2 North Gate(550067001) - AP 15-May-21 Cesium-137 1.47E-04 4.76E-04 2.65E-04 pCi/m3 0S2 North Gate(544763002) - AP 22-May-21 BETA 7.21E-03 2.14E-03 1.09E-02 pCi/m3 0S2 North Gate(545393002) - AP 29-May-21 BETA 7.15E-03 2.56E-03 1.17E-02 pCi/m3 0S2 North Gate(546108002) - AP 5-Jun-21 BETA 3.00E-03 2.64E-03 1.25E-02 pCi/m3 0S2 North Gate(546499002) - AP 12-Jun-21 BETA 4.33E-03 1.87E-03 8.45E-03 pCi/m3 0S2 North Gate(547342002) - AP 19-Jun-21 BETA 6.68E-03 2.25E-03 1.04E-02 pCi/m3 0S2 North Gate(547774002) - AP 26-Jun-21 BETA 5.86E-03 2.22E-03 1.04E-02 pCi/m3 0S2 North Gate(548921002) - AP 4-Jul-21 BETA 4.46E-03 2.25E-03 9.95E-03 pCi/m3 0S2 North Gate(548928002) - AP 11-Jul-21 BETA 9.10E-03 2.14E-03 1.04E-02 pCi/m3 0S2 North Gate(549378002) - AP 18-Jul-21 BETA 7.07E-03 2.22E-03 1.09E-02 pCi/m3 0S2 North Gate(550005002) - AP 25-Jul-21 BETA 9.48E-03 2.48E-03 1.13E-02 pCi/m3 0S2 North Gate(550639002) - AP 1-Aug-21 BETA 1.68E-02 2.05E-03 1.23E-02 pCi/m3 0S2 North Gate(552193002) - AP 7-Aug-21 BETA 5.36E-03 2.08E-03 1.19E-02 pCi/m3 0S2 North Gate(552198002) - AP 14-Aug-21 BETA 1.41E-02 2.10E-03 1.17E-02 pCi/m3 0S2 North Gate(559874001) - AP 15-Aug-21 Cesium-134 3.84E-04 4.88E-04 4.77E-04 pCi/m3 0S2 North Gate(559874001) - AP 15-Aug-21 Cesium-137 -1.78E-05 4.11E-04 2.42E-04 pCi/m3 0S2 North Gate(553263002) - AP 21-Aug-21 BETA 1.59E-02 2.11E-03 1.18E-02 pCi/m3 0S2 North Gate(553498002) - AP 28-Aug-21 BETA 1.84E-02 2.07E-03 1.19E-02 pCi/m3 0S2 North Gate(555509002) - AP 4-Sep-21 BETA 2.18E-02 2.12E-03 1.24E-02 pCi/m3 0S2 North Gate(555390002) - AP 11-Sep-21 BETA 9.30E-03 2.48E-03 1.41E-02 pCi/m3 0S2 North Gate(556242002) - AP 18-Sep-21 BETA 1.91E-02 2.10E-03 1.10E-02 pCi/m3 0S2 North Gate(556927002) - AP 25-Sep-21 BETA 2.84E-02 1.99E-03 1.24E-02 pCi/m3 0S2 North Gate(557550002) - AP 2-Oct-21 BETA 1.92E-02 2.84E-03 1.48E-02 pCi/m3 0S2 North Gate(558462002) - AP 9-Oct-21 BETA 1.74E-02 1.85E-03 1.10E-02 pCi/m3 0S2 North Gate(559199002) - AP 16-Oct-21 BETA 3.26E-02 2.06E-03 1.13E-02 pCi/m3 0S2 North Gate(559947002) - AP 23-Oct-21 BETA 1.06E-02 1.96E-03 1.10E-02 pCi/m3 0S2 North Gate(560662002) - AP 30-Oct-21 BETA 1.52E-02 2.06E-03 1.08E-02 pCi/m3 0S2 North Gate(561359002) - AP 6-Nov-21 BETA 1.84E-02 2.09E-03 1.18E-02 pCi/m3 0S2 North Gate(562118002) - AP 13-Nov-21 BETA 3.88E-02 1.97E-03 1.15E-02 pCi/m3 0S2 North Gate(567610001) - AP 13-Nov-21 Cesium-134 1.07E-04 3.56E-04 2.16E-04 pCi/m3 0S2 North Gate(567610001) - AP 13-Nov-21 Cesium-137 1.98E-04 3.55E-04 2.00E-04 pCi/m3 0S2 North Gate(562868002) - AP 20-Nov-21 BETA 5.06E-02 2.09E-03 1.17E-02 pCi/m3 132

Air Sample Results 0S2 North Gate(563354002) - AP 28-Nov-21 BETA 7.03E-02 2.46E-03 1.25E-02 pCi/m3 0S2 North Gate(564002002) - AP 5-Dec-21 BETA 9.14E-02 1.95E-03 1.28E-02 pCi/m3 0S2 North Gate(564761002) - AP 11-Dec-21 BETA 2.40E-02 2.14E-03 1.11E-02 pCi/m3 0S2 North Gate(565497002) - AP 18-Dec-21 BETA 2.75E-02 2.18E-03 1.22E-02 pCi/m3 0S2 North Gate(565929002) - AP 25-Dec-21 BETA 9.05E-03 2.03E-03 1.16E-02 pCi/m3 1S1 Wastewater Pond AC Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 1S1 Wastewater Pond(531169013) - AC 2-Jan-21 Iodine-131 7.09E-04 9.29E-03 5.33E-03 pCi/m3 1S1 Wastewater Pond(531664017) - AC 9-Jan-21 Iodine-131 -1.67E-03 7.66E-03 4.71E-03 pCi/m3 1S1 Wastewater Pond(531711013) - AC 16-Jan-21 Iodine-131 -1.97E-03 6.11E-03 4.04E-03 pCi/m3 1S1 Wastewater Pond(532387013) - AC 23-Jan-21 Iodine-131 -8.64E-05 7.53E-03 4.36E-03 pCi/m3 1S1 Wastewater Pond(533988012) - AC 30-Jan-21 Iodine-131 3.29E-03 1.10E-02 6.36E-03 pCi/m3 1S1 Wastewater Pond(534289013) - AC 6-Feb-21 Iodine-131 7.05E-03 1.28E-02 7.18E-03 pCi/m3 1S1 Wastewater Pond(534516015) - AC 13-Feb-21 Iodine-131 1.41E-03 8.59E-03 4.97E-03 pCi/m3 1S1 Wastewater Pond(535384013) - AC 20-Feb-21 Iodine-131 -4.23E-03 6.79E-03 5.28E-03 pCi/m3 1S1 Wastewater Pond(535390011) - AC 27-Feb-21 Iodine-131 2.97E-04 1.26E-02 7.88E-03 pCi/m3 1S1 Wastewater Pond(537221012) - AC 6-Mar-21 Iodine-131 2.00E-03 1.22E-02 7.27E-03 pCi/m3 1S1 Wastewater Pond(538236012) - AC 13-Mar-21 Iodine-131 1.88E-03 1.13E-02 6.10E-03 pCi/m3 1S1 Wastewater Pond(538482015) - AC 20-Mar-21 Iodine-131 -1.57E-03 7.55E-03 4.98E-03 pCi/m3 1S1 Wastewater Pond(538491006) - AC 27-Mar-21 Iodine-131 2.25E-03 1.01E-02 5.86E-03 pCi/m3 1S1 Wastewater Pond(539118017) - AC 3-Apr-21 Iodine-131 1.92E-03 9.39E-03 5.32E-03 pCi/m3 1S1 Wastewater Pond(540194015) - AC 10-Apr-21 Iodine-131 -5.30E-03 1.21E-02 7.98E-03 pCi/m3 1S1 Wastewater Pond(541232004) - AC 17-Apr-21 Iodine-131 -3.05E-03 1.60E-02 9.95E-03 pCi/m3 1S1 Wastewater Pond(541392004) - AC 23-Apr-21 Iodine-131 3.80E-05 1.12E-02 7.61E-03 pCi/m3 1S1 Wastewater Pond(542714004) - AC 1-May-21 Iodine-131 -5.20E-04 1.36E-02 8.04E-03 pCi/m3 1S1 Wastewater Pond(543541004) - AC 8-May-21 Iodine-131 7.33E-03 2.36E-02 1.28E-02 pCi/m3 1S1 Wastewater Pond(544179004) - AC 15-May-21 Iodine-131 -2.94E-04 9.58E-03 5.80E-03 pCi/m3 1S1 Wastewater Pond(544763004) - AC 22-May-21 Iodine-131 3.93E-03 1.70E-02 9.32E-03 pCi/m3 1S1 Wastewater Pond(545393004) - AC 29-May-21 Iodine-131 -7.11E-03 1.68E-02 1.10E-02 pCi/m3 1S1 Wastewater Pond(546108004) - AC 5-Jun-21 Iodine-131 -3.29E-04 1.36E-02 8.15E-03 pCi/m3 1S1 Wastewater Pond(546499004) - AC 12-Jun-21 Iodine-131 7.75E-04 5.46E-03 3.69E-03 pCi/m3 1S1 Wastewater Pond(547342004) - AC 19-Jun-21 Iodine-131 -2.67E-03 7.79E-03 5.33E-03 pCi/m3 133

Air Sample Results 1S1 Wastewater Pond(547774004) - AC 26-Jun-21 Iodine-131 1.38E-03 8.54E-03 5.44E-03 pCi/m3 1S1 Wastewater Pond(548921004) - AC 4-Jul-21 Iodine-131 1.05E-03 7.77E-03 4.64E-03 pCi/m3 1S1 Wastewater Pond(548928004) - AC 11-Jul-21 Iodine-131 2.38E-03 1.04E-02 5.89E-03 pCi/m3 1S1 Wastewater Pond(549378004) - AC 18-Jul-21 Iodine-131 8.89E-04 7.00E-03 4.49E-03 pCi/m3 1S1 Wastewater Pond(550005004) - AC 25-Jul-21 Iodine-131 -8.52E-04 7.20E-03 4.45E-03 pCi/m3 1S1 Wastewater Pond(550639004) - AC 1-Aug-21 Iodine-131 -1.71E-04 1.22E-02 7.33E-03 pCi/m3 1S1 Wastewater Pond(552193004) - AC 7-Aug-21 Iodine-131 -1.13E-03 9.19E-03 5.59E-03 pCi/m3 1S1 Wastewater Pond(552198004) - AC 14-Aug-21 Iodine-131 -1.04E-03 7.12E-03 4.38E-03 pCi/m3 1S1 Wastewater Pond(553263004) - AC 21-Aug-21 Iodine-131 -2.50E-03 8.28E-03 5.52E-03 pCi/m3 1S1 Wastewater Pond(553498004) - AC 28-Aug-21 Iodine-131 2.84E-03 7.78E-03 4.65E-03 pCi/m3 1S1 Wastewater Pond(555509004) - AC 4-Sep-21 Iodine-131 -8.20E-03 1.54E-02 1.16E-02 pCi/m3 1S1 Wastewater Pond(555390004) - AC 11-Sep-21 Iodine-131 1.72E-03 9.65E-03 5.45E-03 pCi/m3 1S1 Wastewater Pond(556242004) - AC 18-Sep-21 Iodine-131 6.31E-03 6.89E-03 8.72E-03 pCi/m3 1S1 Wastewater Pond(556927004) - AC 25-Sep-21 Iodine-131 1.98E-05 8.14E-03 4.98E-03 pCi/m3 1S1 Wastewater Pond(557550004) - AC 2-Oct-21 Iodine-131 4.91E-03 1.78E-02 1.04E-02 pCi/m3 1S1 Wastewater Pond(558462004) - AC 9-Oct-21 Iodine-131 -1.91E-03 7.02E-03 4.70E-03 pCi/m3 1S1 Wastewater Pond(559199004) - AC 16-Oct-21 Iodine-131 -4.02E-03 7.33E-03 5.45E-03 pCi/m3 1S1 Wastewater Pond(559947004) - AC 23-Oct-21 Iodine-131 -1.21E-03 1.41E-02 8.31E-03 pCi/m3 1S1 Wastewater Pond(560662004) - AC 30-Oct-21 Iodine-131 -2.48E-04 9.14E-03 5.26E-03 pCi/m3 1S1 Wastewater Pond(561359004) - AC 6-Nov-21 Iodine-131 -3.02E-04 1.42E-02 8.25E-03 pCi/m3 1S1 Wastewater Pond(562118004) - AC 13-Nov-21 Iodine-131 4.09E-03 1.05E-02 6.00E-03 pCi/m3 1S1 Wastewater Pond(562868004) - AC 20-Nov-21 Iodine-131 2.28E-03 9.57E-03 5.46E-03 pCi/m3 1S1 Wastewater Pond(563354004) - AC 27-Nov-21 Iodine-131 2.87E-03 8.24E-03 4.46E-03 pCi/m3 1S1 Wastewater Pond(564002004) - AC 4-Dec-21 Iodine-131 -3.14E-04 8.14E-03 4.78E-03 pCi/m3 1S1 Wastewater Pond(564761004) - AC 11-Dec-21 Iodine-131 -2.40E-03 7.85E-03 5.00E-03 pCi/m3 1S1 Wastewater Pond(565497004) - AC 18-Dec-21 Iodine-131 -3.02E-03 7.68E-03 5.23E-03 pCi/m3 1S1 Wastewater Pond(565929004) - AC 25-Dec-21 Iodine-131 -3.13E-04 1.13E-02 6.67E-03 pCi/m3 1S1 Wastewater Pond AP Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 1S1 Wastewater Pond(531169014) - AP 2-Jan-21 BETA 1.77E-02 1.98E-03 1.02E-02 pCi/m3 I I I I I 1S1 Wastewater Pond(531664018) - AP 9-Jan-21 BETA 2.46E-02 2.29E-03 1.16E-02 pCi/m3 1S1 Wastewater Pond(531711014) - AP 16-Jan-21 BETA 3.44E-02 2.18E-03 1.20E-02 pCi/m3 134

Air Sample Results 1S1 Wastewater Pond(532387014) - AP 23-Jan-21 BETA 1.55E-02 2.34E-03 1.35E-02 pCi/m3 1S1 Wastewater Pond(533988002) - AP 30-Jan-21 BETA 9.75E-03 1.91E-03 9.40E-03 pCi/m3 1S1 Wastewater Pond(534289014) - AP 6-Feb-21 BETA 2.55E-02 2.44E-03 1.11E-02 pCi/m3 1S1 Wastewater Pond(534516016) - AP 13-Feb-21 BETA 8.89E-03 2.30E-03 1.07E-02 pCi/m3 1S1 Wastewater Pond(540519003) - AP 13-Feb-21 Cesium-134 3.47E-05 5.25E-04 3.24E-04 pCi/m3 1S1 Wastewater Pond(540519003) - AP 13-Feb-21 Cesium-137 2.21E-04 4.68E-04 2.53E-04 pCi/m3 1S1 Wastewater Pond(535384014) - AP 20-Feb-21 BETA 1.32E-02 2.24E-03 1.10E-02 pCi/m3 1S1 Wastewater Pond(535390012) - AP 27-Feb-21 BETA 1.89E-02 2.13E-03 1.09E-02 pCi/m3 1S1 Wastewater Pond(537221002) - AP 6-Mar-21 BETA 2.18E-02 2.66E-03 1.27E-02 pCi/m3 1S1 Wastewater Pond(538236002) - AP 13-Mar-21 BETA 1.19E-02 1.91E-03 9.71E-03 pCi/m3 1S1 Wastewater Pond(538482016) - AP 20-Mar-21 BETA 1.06E-02 2.28E-03 1.11E-02 pCi/m3 1S1 Wastewater Pond(538491007) - AP 27-Mar-21 BETA 2.11E-02 2.12E-03 1.09E-02 pCi/m3 1S1 Wastewater Pond(539118018) - AP 3-Apr-21 BETA 3.17E-02 2.50E-03 1.16E-02 pCi/m3 1S1 Wastewater Pond(540194016) - AP 10-Apr-21 BETA 1.75E-02 2.02E-03 8.91E-03 pCi/m3 1S1 Wastewater Pond(541232005) - AP 17-Apr-21 BETA 2.32E-02 2.61E-03 1.28E-02 pCi/m3 1S1 Wastewater Pond(541392005) - AP 23-Apr-21 BETA 1.12E-02 2.20E-03 1.04E-02 pCi/m3 1S1 Wastewater Pond(542714005) - AP 1-May-21 BETA 7.59E-03 2.01E-03 8.44E-03 pCi/m3 1S1 Wastewater Pond(543541005) - AP 8-May-21 BETA 5.30E-03 2.60E-03 1.34E-02 pCi/m3 1S1 Wastewater Pond(544179005) - AP 15-May-21 BETA 7.10E-03 1.86E-03 8.08E-03 pCi/m3 1S1 Wastewater Pond(550067002) - AP 15-May-21 Cesium-134 9.08E-06 4.66E-04 2.68E-04 pCi/m3 1S1 Wastewater Pond(550067002) - AP 15-May-21 Cesium-137 1.65E-04 4.88E-04 2.65E-04 pCi/m3 1S1 Wastewater Pond(544763005) - AP 22-May-21 BETA 6.94E-03 2.08E-03 1.07E-02 pCi/m3 1S1 Wastewater Pond(545393005) - AP 29-May-21 BETA 6.83E-03 2.33E-03 1.05E-02 pCi/m3 1S1 Wastewater Pond(546108005) - AP 5-Jun-21 BETA 4.62E-03 2.68E-03 1.25E-02 pCi/m3 1S1 Wastewater Pond(546499005) - AP 12-Jun-21 BETA 5.59E-03 1.76E-03 8.47E-03 pCi/m3 1S1 Wastewater Pond(547342005) - AP 19-Jun-21 BETA 5.50E-03 2.28E-03 1.03E-02 pCi/m3 1S1 Wastewater Pond(547774005) - AP 26-Jun-21 BETA 5.67E-03 2.27E-03 1.04E-02 pCi/m3 1S1 Wastewater Pond(548921005) - AP 4-Jul-21 BETA 2.89E-03 2.14E-03 9.96E-03 pCi/m3 1S1 Wastewater Pond(548928005) - AP 11-Jul-21 BETA 5.17E-03 2.34E-03 1.04E-02 pCi/m3 1S1 Wastewater Pond(549378005) - AP 18-Jul-21 BETA 5.63E-03 2.34E-03 1.10E-02 pCi/m3 1S1 Wastewater Pond(550005005) - AP 25-Jul-21 BETA 1.04E-02 2.00E-03 1.13E-02 pCi/m3 1S1 Wastewater Pond(550639005) - AP 1-Aug-21 BETA 1.61E-02 2.55E-03 1.21E-02 pCi/m3 1S1 Wastewater Pond(552193005) - AP 7-Aug-21 BETA 7.62E-03 1.98E-03 1.18E-02 pCi/m3 1S1 Wastewater Pond(552198005) - AP 14-Aug-21 BETA 1.21E-02 2.44E-03 1.17E-02 pCi/m3 135

Air Sample Results 1S1 Wastewater Pond(559874002) - AP 15-Aug-21 Cesium-134 1.93E-04 4.63E-04 2.50E-04 pCi/m3 1S1 Wastewater Pond(559874002) - AP 15-Aug-21 Cesium-137 3.31E-06 3.85E-04 2.64E-04 pCi/m3 1S1 Wastewater Pond(553263005) - AP 21-Aug-21 BETA 1.82E-02 2.10E-03 1.17E-02 pCi/m3 1S1 Wastewater Pond(553498005) - AP 28-Aug-21 BETA 2.05E-02 2.41E-03 1.18E-02 pCi/m3 1S1 Wastewater Pond(555509005) - AP 4-Sep-21 BETA 2.01E-02 2.13E-03 1.23E-02 pCi/m3 1S1 Wastewater Pond(555390005) - AP 11-Sep-21 BETA 1.54E-02 2.40E-03 1.46E-02 pCi/m3 1S1 Wastewater Pond(556242005) - AP 18-Sep-21 BETA 1.88E-02 1.86E-03 1.10E-02 pCi/m3 1S1 Wastewater Pond(556927005) - AP 25-Sep-21 BETA 2.86E-02 2.33E-03 1.23E-02 pCi/m3 1S1 Wastewater Pond(557550005) - AP 2-Oct-21 BETA 2.42E-02 2.55E-03 1.48E-02 pCi/m3 1S1 Wastewater Pond(558462005) - AP 9-Oct-21 BETA 1.68E-02 2.09E-03 1.09E-02 pCi/m3 1S1 Wastewater Pond(559199005) - AP 16-Oct-21 BETA 3.42E-02 2.09E-03 1.13E-02 pCi/m3 1S1 Wastewater Pond(559947005) - AP 23-Oct-21 BETA 1.17E-02 2.07E-03 1.10E-02 pCi/m3 1S1 Wastewater Pond(560662005) - AP 30-Oct-21 BETA 1.13E-02 2.30E-03 1.06E-02 pCi/m3 1S1 Wastewater Pond(561359005) - AP 6-Nov-21 BETA 2.22E-02 2.25E-03 1.12E-02 pCi/m3 1S1 Wastewater Pond(562118005) - AP 13-Nov-21 BETA 3.66E-02 2.11E-03 1.17E-02 pCi/m3 1S1 Wastewater Pond(567610002) - AP 13-Nov-21 Cesium-134 -3.31E-03 3.95E-03 3.49E-03 pCi/m3 1S1 Wastewater Pond(567610002) - AP 13-Nov-21 Cesium-137 -3.80E-03 3.85E-03 3.81E-03 pCi/m3 1S1 Wastewater Pond(562868005) - AP 20-Nov-21 BETA 5.10E-02 1.99E-03 1.18E-02 pCi/m3 1S1 Wastewater Pond(563354005) - AP 27-Nov-21 BETA 8.01E-02 2.04E-03 1.25E-02 pCi/m3 1S1 Wastewater Pond(564002005) - AP 4-Dec-21 BETA 7.23E-02 2.49E-03 1.27E-02 pCi/m3 1S1 Wastewater Pond(564761005) - AP 11-Dec-21 BETA 2.55E-02 2.05E-03 1.10E-02 pCi/m3 1S1 Wastewater Pond(565497005) - AP 18-Dec-21 BETA 3.03E-02 2.21E-03 1.24E-02 pCi/m3 1S1 Wastewater Pond(565929005) - AP 25-Dec-21 BETA 8.09E-03 2.19E-03 1.18E-02 pCi/m3 5F1 SLO OEL AC Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 5F1 SLO OEL(531169001) - AC 2-Jan-21 Iodine-131 5.13E-03 9.30E-03 5.13E-03 pCi/m3 5F1 SLO OEL(531664001) - AC 9-Jan-21 Iodine-131 9.64E-04 8.07E-03 4.72E-03 pCi/m3 5F1 SLO OEL(531711001) - AC 16-Jan-21 Iodine-131 2.80E-03 8.31E-03 9.44E-03 pCi/m3 5F1 SLO OEL(532387001) - AC 23-Jan-21 Iodine-131 3.97E-03 1.11E-02 6.58E-03 pCi/m3 5F1 SLO OEL(533988013) - AC 30-Jan-21 Iodine-131 5.55E-03 9.63E-03 5.35E-03 pCi/m3 5F1 SLO OEL(534289001) - AC 6-Feb-21 Iodine-131 -4.83E-03 9.50E-03 6.71E-03 pCi/m3 5F1 SLO OEL(534516001) - AC 13-Feb-21 Iodine-131 2.23E-03 1.62E-02 8.92E-03 pCi/m3 136

Air Sample Results 5F1 SLO OEL(535384001) - AC 20-Feb-21 Iodine-131 -2.28E-03 7.59E-03 5.26E-03 pCi/m3 5F1 SLO OEL(535390001) - AC 27-Feb-21 Iodine-131 -3.03E-03 9.46E-03 6.66E-03 pCi/m3 5F1 SLO OEL(537221013) - AC 6-Mar-21 Iodine-131 -2.03E-03 1.02E-02 6.97E-03 pCi/m3 5F1 SLO OEL(538236013) - AC 13-Mar-21 Iodine-131 -9.67E-03 1.54E-02 1.15E-02 pCi/m3 5F1 SLO OEL(538482001) - AC 20-Mar-21 Iodine-131 5.36E-04 7.77E-03 4.49E-03 pCi/m3 5F1 SLO OEL(538491015) - AC 27-Mar-21 Iodine-131 4.31E-03 1.13E-02 6.35E-03 pCi/m3 5F1 SLO OEL(539118001) - AC 3-Apr-21 Iodine-131 6.85E-04 9.58E-03 5.67E-03 pCi/m3 5F1 SLO OEL(540194001) - AC 10-Apr-21 Iodine-131 1.10E-03 1.00E-02 5.63E-03 pCi/m3 5F1 SLO OEL(541232006) - AC 17-Apr-21 Iodine-131 6.18E-03 2.19E-02 1.23E-02 pCi/m3 5F1 SLO OEL(541392006) - AC 24-Apr-21 Iodine-131 7.13E-04 8.03E-03 4.87E-03 pCi/m3 5F1 SLO OEL(542714006) - AC 1-May-21 Iodine-131 -7.29E-03 9.84E-03 7.80E-03 pCi/m3 5F1 SLO OEL(543541006) - AC 8-May-21 Iodine-131 -7.03E-03 7.25E-03 7.16E-03 pCi/m3 5F1 SLO OEL(544179006) - AC 15-May-21 Iodine-131 4.41E-04 8.68E-03 4.95E-03 pCi/m3 5F1 SLO OEL(544763006) - AC 22-May-21 Iodine-131 -7.74E-03 1.25E-02 9.80E-03 pCi/m3 5F1 SLO OEL(545393006) - AC 29-May-21 Iodine-131 2.10E-03 1.43E-02 8.73E-03 pCi/m3 5F1 SLO OEL(546108006) - AC 5-Jun-21 Iodine-131 1.18E-03 1.31E-02 7.64E-03 pCi/m3 5F1 SLO OEL(546499006) - AC 12-Jun-21 Iodine-131 3.09E-03 8.31E-03 4.48E-03 pCi/m3 5F1 SLO OEL(547342006) - AC 19-Jun-21 Iodine-131 6.31E-04 8.92E-03 5.03E-03 pCi/m3 5F1 SLO OEL(547774006) - AC 26-Jun-21 Iodine-131 -4.48E-03 6.59E-03 5.24E-03 pCi/m3 5F1 SLO OEL(548921006) - AC 3-Jul-21 Iodine-131 2.06E-03 8.29E-03 4.80E-03 pCi/m3 5F1 SLO OEL(548928006) - AC 10-Jul-21 Iodine-131 9.60E-04 7.82E-03 4.39E-03 pCi/m3 5F1 SLO OEL(549378006) - AC 17-Jul-21 Iodine-131 -8.23E-04 8.42E-03 5.28E-03 pCi/m3 5F1 SLO OEL(550005006) - AC 24-Jul-21 Iodine-131 5.51E-04 8.59E-03 4.82E-03 pCi/m3 5F1 SLO OEL(550639006) - AC 31-Jul-21 Iodine-131 -7.15E-04 8.27E-03 4.94E-03 pCi/m3 5F1 SLO OEL(552193006) - AC 7-Aug-21 Iodine-131 1.47E-04 1.07E-02 6.18E-03 pCi/m3 5F1 SLO OEL(552198006) - AC 14-Aug-21 Iodine-131 -7.00E-04 7.25E-03 4.58E-03 pCi/m3 5F1 SLO OEL(553263006) - AC 21-Aug-21 Iodine-131 -3.50E-03 1.37E-02 9.01E-03 pCi/m3 5F1 SLO OEL(553498006) - AC 28-Aug-21 Iodine-131 -1.66E-03 1.03E-02 6.25E-03 pCi/m3 5F1 SLO OEL(555509006) - AC 4-Sep-21 Iodine-131 -6.18E-03 1.01E-02 7.84E-03 pCi/m3 5F1 SLO OEL(555390006) - AC 11-Sep-21 Iodine-131 2.73E-03 1.01E-02 5.46E-03 pCi/m3 5F1 SLO OEL(556242006) - AC 18-Sep-21 Iodine-131 -1.50E-03 7.76E-03 4.78E-03 pCi/m3 5F1 SLO OEL(556927006) - AC 25-Sep-21 Iodine-131 3.00E-03 8.20E-03 4.48E-03 pCi/m3 5F1 SLO OEL(557550006) - AC 2-Oct-21 Iodine-131 1.80E-03 1.68E-02 9.59E-03 pCi/m3 5F1 SLO OEL(558462006) - AC 9-Oct-21 Iodine-131 -6.48E-04 9.04E-03 5.41E-03 pCi/m3 137

Air Sample Results 5F1 SLO OEL(559199006) - AC 16-Oct-21 Iodine-131 3.61E-03 9.56E-03 5.17E-03 pCi/m3 5F1 SLO OEL(559947006) - AC 23-Oct-21 Iodine-131 1.26E-03 1.14E-02 6.39E-03 pCi/m3 5F1 SLO OEL(560662006) - AC 30-Oct-21 Iodine-131 7.94E-05 1.29E-02 7.43E-03 pCi/m3 5F1 SLO OEL(561359006) - AC 6-Nov-21 Iodine-131 -1.96E-03 8.99E-03 5.69E-03 pCi/m3 5F1 SLO OEL(562118006) - AC 13-Nov-21 Iodine-131 -1.17E-03 6.27E-03 4.12E-03 pCi/m3 5F1 SLO OEL(562868006) - AC 20-Nov-21 Iodine-131 -2.28E-03 6.46E-03 4.46E-03 pCi/m3 5F1 SLO OEL(563354006) - AC 27-Nov-21 Iodine-131 -1.05E-03 8.58E-03 5.14E-03 pCi/m3 5F1 SLO OEL(564002006) - AC 4-Dec-21 Iodine-131 5.00E-03 9.77E-03 5.32E-03 pCi/m3 5F1 SLO OEL(564761006) - AC 11-Dec-21 Iodine-131 3.48E-03 1.14E-02 6.54E-03 pCi/m3 5F1 SLO OEL(565497006) - AC 18-Dec-21 Iodine-131 -1.23E-03 7.52E-03 4.62E-03 pCi/m3 5F1 SLO OEL(565929006) - AC 25-Dec-21 Iodine-131 2.97E-04 1.53E-02 8.77E-03 pCi/m3 5F1 SLO OEL AC14 Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 5F1 SLO OEL(531169003) - AC14 2-Jan-21 Carbon-14 -4.43E-08 1.07E-07 6.31E-08 uCi/m3 5F1 SLO OEL(531664005) - AC14 9-Jan-21 Carbon-14 4.35E-09 1.27E-07 7.55E-08 uCi/m3 5F1 SLO OEL(531711003) - AC14 16-Jan-21 Carbon-14 2.33E-08 1.02E-07 6.14E-08 uCi/m3 5F1 SLO OEL(532387003) - AC14 23-Jan-21 Carbon-14 2.60E-08 1.24E-07 7.43E-08 uCi/m3 5F1 SLO OEL(533988009) - AC14 30-Jan-21 Carbon-14 6.51E-08 8.89E-08 5.43E-08 uCi/m3 5F1 SLO OEL(534289003) - AC14 6-Feb-21 Carbon-14 6.65E-08 1.44E-07 8.76E-08 uCi/m3 5F1 SLO OEL(534516003) - AC14 13-Feb-21 Carbon-14 1.06E-08 1.04E-07 6.24E-08 uCi/m3 5F1 SLO OEL(535384003) - AC14 20-Feb-21 Carbon-14 6.49E-08 1.04E-07 6.34E-08 uCi/m3 5F1 SLO OEL(535390004) - AC14 27-Feb-21 Carbon-14 4.36E-08 9.89E-08 5.98E-08 uCi/m3 5F1 SLO OEL(537221009) - AC14 6-Mar-21 Carbon-14 2.64E-08 1.21E-07 7.27E-08 uCi/m3 5F1 SLO OEL(538236009) - AC14 13-Mar-21 Carbon-14 5.90E-08 9.19E-08 5.60E-08 uCi/m3 5F1 SLO OEL(538482004) - AC14 20-Mar-21 Carbon-14 -4.45E-08 9.77E-08 5.73E-08 uCi/m3 5F1 SLO OEL(538491017) - AC14 27-Mar-21 Carbon-14 4.37E-08 1.00E-07 6.04E-08 uCi/m3 5F1 SLO OEL(539118005) - AC14 3-Apr-21 Carbon-14 -9.69E-08 1.25E-07 7.26E-08 uCi/m3 5F1 SLO OEL(540194005) - AC14 10-Apr-21 Carbon-14 7.97E-08 9.17E-08 5.61E-08 uCi/m3 5F1 SLO OEL(541232008) - AC14 17-Apr-21 Carbon-14 1.07E-07 1.13E-07 6.93E-08 uCi/m3 5F1 SLO OEL(541392008) - AC14 24-Apr-21 Carbon-14 7.82E-08 1.00E-07 6.11E-08 uCi/m3 5F1 SLO OEL(542714008) - AC14 1-May-21 Carbon-14 -7.35E-09 1.06E-07 6.30E-08 uCi/m3 5F1 SLO OEL(543541008) - AC14 8-May-21 Carbon-14 1.11E-08 1.47E-07 8.74E-08 uCi/m3 138

Air Sample Results 5F1 SLO OEL(544179008) - AC14 15-May-21 Carbon-14 -3.02E-09 1.06E-07 6.32E-08 uCi/m3 5F1 SLO OEL(544763008) - AC14 22-May-21 Carbon-14 1.25E-08 1.21E-07 7.23E-08 uCi/m3 5F1 SLO OEL(545393008) - AC14 29-May-21 Carbon-14 5.11E-09 1.22E-07 7.25E-08 uCi/m3 5F1 SLO OEL(546108008) - AC14 5-Jun-21 Carbon-14 9.64E-08 1.42E-07 8.58E-08 uCi/m3 5F1 SLO OEL(546499008) - AC14 12-Jun-21 Carbon-14 5.91E-08 1.06E-07 6.40E-08 uCi/m3 5F1 SLO OEL(547342008) - AC14 19-Jun-21 Carbon-14 4.75E-08 1.21E-07 7.26E-08 uCi/m3 5F1 SLO OEL(547774008) - AC14 26-Jun-21 Carbon-14 -3.27E-08 1.22E-07 7.18E-08 uCi/m3 5F1 SLO OEL(548921008) - AC14 3-Jul-21 Carbon-14 -6.12E-09 1.14E-07 6.80E-08 uCi/m3 5F1 SLO OEL(548928008) - AC14 10-Jul-21 Carbon-14 -7.93E-08 1.13E-07 6.62E-08 uCi/m3 5F1 SLO OEL(549378008) - AC14 17-Jul-21 Carbon-14 9.01E-08 1.08E-07 6.61E-08 uCi/m3 5F1 SLO OEL(550005008) - AC14 24-Jul-21 Carbon-14 6.38E-08 1.06E-07 6.43E-08 uCi/m3 5F1 SLO OEL(550639008) - AC14 31-Jul-21 Carbon-14 2.46E-08 1.38E-07 8.30E-08 uCi/m3 5F1 SLO OEL(552193008) - AC14 7-Aug-21 Carbon-14 8.59E-09 3.19E-07 1.90E-07 uCi/m3 5F1 SLO OEL(552198008) - AC14 14-Aug-21 Carbon-14 4.49E-08 1.27E-07 7.66E-08 uCi/m3 5F1 SLO OEL(553263008) - AC14 21-Aug-21 Carbon-14 4.31E-09 2.31E-07 1.38E-07 uCi/m3 5F1 SLO OEL(553498008) - AC14 28-Aug-21 Carbon-14 7.74E-08 2.68E-07 1.62E-07 uCi/m3 5F1 SLO OEL(555509008) - AC14 4-Sep-21 Carbon-14 -6.96E-08 2.89E-07 1.70E-07 uCi/m3 5F1 SLO OEL(555390008) - AC14 11-Sep-21 Carbon-14 -4.52E-08 3.61E-07 2.13E-07 uCi/m3 5F1 SLO OEL(556242008) - AC14 18-Sep-21 Carbon-14 1.04E-07 2.48E-07 1.51E-07 uCi/m3 5F1 SLO OEL(556927008) - AC14 25-Sep-21 Carbon-14 2.72E-08 2.49E-07 1.49E-07 uCi/m3 5F1 SLO OEL(557550008) - AC14 2-Oct-21 Carbon-14 6.94E-08 3.11E-07 1.88E-07 uCi/m3 5F1 SLO OEL(558462008) - AC14 9-Oct-21 Carbon-14 3.62E-08 1.95E-07 1.17E-07 uCi/m3 5F1 SLO OEL(559199008) - AC14 16-Oct-21 Carbon-14 1.93E-07 2.32E-07 1.45E-07 uCi/m3 5F1 SLO OEL(559947008) - AC14 23-Oct-21 Carbon-14 5.40E-08 2.50E-07 1.51E-07 uCi/m3 5F1 SLO OEL(560662008) - AC14 30-Oct-21 Carbon-14 7.54E-08 2.49E-07 1.51E-07 uCi/m3 5F1 SLO OEL(561359008) - AC14 6-Nov-21 Carbon-14 -7.75E-08 2.84E-07 1.67E-07 uCi/m3 5F1 SLO OEL(562118008) - AC14 13-Nov-21 Carbon-14 1.44E-08 2.53E-07 1.51E-07 uCi/m3 5F1 SLO OEL(562868008) - AC14 20-Nov-21 Carbon-14 1.07E-09 4.12E-07 2.46E-07 uCi/m3 5F1 SLO OEL(563354008) - AC14 27-Nov-21 Carbon-14 -6.82E-08 3.53E-07 2.08E-07 uCi/m3 5F1 SLO OEL(564002008) - AC14 4-Dec-21 Carbon-14 5.96E-08 2.35E-07 1.42E-07 uCi/m3 5F1 SLO OEL(564761008) - AC14 11-Dec-21 Carbon-14 6.43E-08 2.28E-07 1.38E-07 uCi/m3 5F1 SLO OEL(565497008) - AC14 18-Dec-21 Carbon-14 2.19E-08 2.39E-07 1.43E-07 uCi/m3 5F1 SLO OEL(565929008) - AC14 25-Dec-21 Carbon-14 3.77E-08 2.36E-07 1.42E-07 uCi/m3 139

Air Sample Results 5F1 SLO OEL AP Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 5F1 SLO OEL(531169002) - AP 2-Jan-21 BETA 2.40E-02 1.99E-03 1.02E-02 pCi/m3 5F1 SLO OEL(531664002) - AP 9-Jan-21 BETA 3.26E-02 2.27E-03 1.17E-02 pCi/m3 5F1 SLO OEL(531711002) - AP 16-Jan-21 BETA 4.76E-02 2.04E-03 1.23E-02 pCi/m3 5F1 SLO OEL(532387002) - AP 23-Jan-21 BETA 1.46E-02 2.44E-03 1.38E-02 pCi/m3 5F1 SLO OEL(533988003) - AP 30-Jan-21 BETA 1.01E-02 1.96E-03 9.59E-03 pCi/m3 5F1 SLO OEL(534289002) - AP 6-Feb-21 BETA 2.54E-02 2.29E-03 1.10E-02 pCi/m3 5F1 SLO OEL(534516002) - AP 13-Feb-21 BETA 1.13E-02 2.13E-03 1.07E-02 pCi/m3 5F1 SLO OEL(540519004) - AP 13-Feb-21 Cesium-134 -5.25E-05 5.84E-04 3.66E-04 pCi/m3 5F1 SLO OEL(540519004) - AP 13-Feb-21 Cesium-137 -1.34E-04 5.12E-04 3.36E-04 pCi/m3 5F1 SLO OEL(535384002) - AP 20-Feb-21 BETA 1.67E-02 2.16E-03 1.12E-02 pCi/m3 5F1 SLO OEL(535390002) - AP 27-Feb-21 BETA 1.95E-02 2.25E-03 1.10E-02 pCi/m3 5F1 SLO OEL(537221003) - AP 6-Mar-21 BETA 2.56E-02 2.52E-03 1.28E-02 pCi/m3 5F1 SLO OEL(538236003) - AP 13-Mar-21 BETA 8.42E-03 1.85E-03 9.70E-03 pCi/m3 5F1 SLO OEL(538482002) - AP 20-Mar-21 BETA 9.68E-03 2.06E-03 1.10E-02 pCi/m3 5F1 SLO OEL(538491016) - AP 27-Mar-21 BETA 1.40E-02 2.09E-03 1.06E-02 pCi/m3 5F1 SLO OEL(539118002) - AP 3-Apr-21 BETA 3.49E-02 2.46E-03 1.16E-02 pCi/m3 5F1 SLO OEL(540194002) - AP 10-Apr-21 BETA 1.73E-02 1.93E-03 8.90E-03 pCi/m3 5F1 SLO OEL(541232007) - AP 17-Apr-21 BETA 2.29E-02 2.45E-03 1.26E-02 pCi/m3 5F1 SLO OEL(541392007) - AP 24-Apr-21 BETA 1.02E-02 2.09E-03 9.97E-03 pCi/m3 5F1 SLO OEL(542714007) - AP 1-May-21 BETA 1.09E-02 1.92E-03 8.33E-03 pCi/m3 5F1 SLO OEL(543541007) - AP 8-May-21 BETA 8.92E-03 2.56E-03 1.35E-02 pCi/m3 5F1 SLO OEL(544179007) - AP 15-May-21 BETA 8.07E-03 1.86E-03 8.16E-03 pCi/m3 5F1 SLO OEL(550067003) - AP 15-May-21 Cesium-134 1.67E-05 5.80E-04 3.43E-04 pCi/m3 5F1 SLO OEL(550067003) - AP 15-May-21 Cesium-137 -5.14E-05 3.71E-04 2.33E-04 pCi/m3 5F1 SLO OEL(544763007) - AP 22-May-21 BETA 6.82E-03 1.97E-03 1.08E-02 pCi/m3 5F1 SLO OEL(545393007) - AP 29-May-21 BETA 6.51E-03 2.15E-03 1.01E-02 pCi/m3 5F1 SLO OEL(546108007) - AP 5-Jun-21 BETA 8.61E-03 2.63E-03 1.25E-02 pCi/m3 5F1 SLO OEL(546499007) - AP 12-Jun-21 BETA 7.20E-03 1.97E-03 8.47E-03 pCi/m3 5F1 SLO OEL(547342007) - AP 19-Jun-21 BETA 6.96E-03 2.11E-03 9.94E-03 pCi/m3 5F1 SLO OEL(547774007) - AP 26-Jun-21 BETA 6.41E-03 2.17E-03 1.03E-02 pCi/m3 5F1 SLO OEL(548921007) - AP 3-Jul-21 BETA 6.68E-03 2.11E-03 1.01E-02 pCi/m3 140

Air Sample Results 5F1 SLO OEL(548928007) - AP 10-Jul-21 BETA 1.23E-02 2.19E-03 1.04E-02 pCi/m3 5F1 SLO OEL(549378007) - AP 17-Jul-21 BETA 7.70E-03 2.19E-03 1.09E-02 pCi/m3 5F1 SLO OEL(550005007) - AP 24-Jul-21 BETA 1.39E-02 1.99E-03 1.12E-02 pCi/m3 5F1 SLO OEL(550639007) - AP 31-Jul-21 BETA 1.84E-02 2.02E-03 1.19E-02 pCi/m3 5F1 SLO OEL(552193007) - AP 7-Aug-21 BETA 8.63E-03 2.47E-03 1.16E-02 pCi/m3 5F1 SLO OEL(552198007) - AP 14-Aug-21 BETA 2.15E-02 2.10E-03 1.17E-02 pCi/m3 5F1 SLO OEL(559874003) - AP 14-Aug-21 Cesium-134 6.44E-05 4.32E-04 2.49E-04 pCi/m3 5F1 SLO OEL(559874003) - AP 14-Aug-21 Cesium-137 8.70E-05 3.64E-04 2.05E-04 pCi/m3 5F1 SLO OEL(553263007) - AP 21-Aug-21 BETA 1.90E-02 2.44E-03 1.18E-02 pCi/m3 5F1 SLO OEL(553498007) - AP 28-Aug-21 BETA 1.90E-02 2.12E-03 1.21E-02 pCi/m3 5F1 SLO OEL(555509007) - AP 4-Sep-21 BETA 2.10E-02 2.51E-03 1.23E-02 pCi/m3 5F1 SLO OEL(555390007) - AP 11-Sep-21 BETA 1.76E-02 2.28E-03 1.44E-02 pCi/m3 5F1 SLO OEL(556242007) - AP 18-Sep-21 BETA 2.32E-02 1.88E-03 1.09E-02 pCi/m3 5F1 SLO OEL(556927007) - AP 25-Sep-21 BETA 2.51E-02 2.06E-03 1.23E-02 pCi/m3 5F1 SLO OEL(557550007) - AP 2-Oct-21 BETA 3.46E-02 2.43E-03 1.47E-02 pCi/m3 5F1 SLO OEL(558462007) - AP 9-Oct-21 BETA 2.10E-02 1.88E-03 1.09E-02 pCi/m3 5F1 SLO OEL(559199007) - AP 16-Oct-21 BETA 3.37E-02 2.09E-03 1.14E-02 pCi/m3 5F1 SLO OEL(559947007) - AP 23-Oct-21 BETA 1.33E-02 2.17E-03 1.13E-02 pCi/m3 5F1 SLO OEL(560662007) - AP 30-Oct-21 BETA 1.76E-02 2.13E-03 1.09E-02 pCi/m3 5F1 SLO OEL(561359007) - AP 6-Nov-21 BETA 2.04E-02 2.08E-03 1.14E-02 pCi/m3 5F1 SLO OEL(562118007) - AP 13-Nov-21 BETA 5.43E-02 2.12E-03 1.22E-02 pCi/m3 5F1 SLO OEL(567610003) - AP 13-Nov-21 Cesium-134 4.10E-05 3.17E-04 1.82E-04 pCi/m3 5F1 SLO OEL(567610003) - AP 13-Nov-21 Cesium-137 -1.81E-04 2.43E-04 1.98E-04 pCi/m3 5F1 SLO OEL(562868007) - AP 20-Nov-21 BETA 5.12E-02 2.09E-03 1.19E-02 pCi/m3 5F1 SLO OEL(563354007) - AP 27-Nov-21 BETA 8.58E-02 2.01E-03 1.27E-02 pCi/m3 5F1 SLO OEL(564002007) - AP 4-Dec-21 BETA 7.94E-02 2.06E-03 1.26E-02 pCi/m3 5F1 SLO OEL(564761007) - AP 11-Dec-21 BETA 3.84E-02 2.21E-03 1.16E-02 pCi/m3 5F1 SLO OEL(565497007) - AP 18-Dec-21 BETA 3.89E-02 2.25E-03 1.24E-02 pCi/m3 5F1 SLO OEL(565929007) - AP 25-Dec-21 BETA 1.56E-02 2.19E-03 1.20E-02 pCi/m3 7D1 Avila Gate AC Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7D1 Avila Gate(531169004) - AC 2-Jan-21 Iodine-131 1.57E-03 7.37E-03 4.04E-03 pCi/m3 141

Air Sample Results 7D1 Avila Gate(531664006) - AC 9-Jan-21 Iodine-131 -1.52E-03 4.82E-03 3.20E-03 pCi/m3 7D1 Avila Gate(531711004) - AC 16-Jan-21 Iodine-131 8.92E-04 9.28E-03 5.48E-03 pCi/m3 7D1 Avila Gate(532387004) - AC 23-Jan-21 Iodine-131 7.01E-04 8.15E-03 4.68E-03 pCi/m3 7D1 Avila Gate(533988014) - AC 30-Jan-21 Iodine-131 -1.46E-03 7.32E-03 4.65E-03 pCi/m3 7D1 Avila Gate(534289004) - AC 6-Feb-21 Iodine-131 -1.03E-02 1.04E-02 1.10E-02 pCi/m3 7D1 Avila Gate(534516004) - AC 13-Feb-21 Iodine-131 4.21E-04 1.19E-02 7.42E-03 pCi/m3 7D1 Avila Gate(535384004) - AC 20-Feb-21 Iodine-131 6.49E-04 9.44E-03 5.36E-03 pCi/m3 7D1 Avila Gate(535390017) - AC 27-Feb-21 Iodine-131 -3.47E-03 7.80E-03 5.72E-03 pCi/m3 7D1 Avila Gate(537221014) - AC 6-Mar-21 Iodine-131 1.52E-03 9.64E-03 5.23E-03 pCi/m3 7D1 Avila Gate(538236014) - AC 13-Mar-21 Iodine-131 2.98E-03 1.23E-02 6.72E-03 pCi/m3 7D1 Avila Gate(538482006) - AC 20-Mar-21 Iodine-131 -1.36E-03 7.69E-03 4.99E-03 pCi/m3 7D1 Avila Gate(538491013) - AC 27-Mar-21 Iodine-131 -4.46E-04 1.21E-02 7.03E-03 pCi/m3 7D1 Avila Gate(539118006) - AC 3-Apr-21 Iodine-131 2.81E-03 1.34E-02 7.46E-03 pCi/m3 7D1 Avila Gate(540194006) - AC 10-Apr-21 Iodine-131 7.03E-03 1.03E-02 8.56E-03 pCi/m3 7D1 Avila Gate(541232009) - AC 17-Apr-21 Iodine-131 7.91E-04 1.77E-02 1.05E-02 pCi/m3 7D1 Avila Gate(541392009) - AC 23-Apr-21 Iodine-131 -4.31E-03 1.01E-02 6.76E-03 pCi/m3 7D1 Avila Gate(542714009) - AC 1-May-21 Iodine-131 5.83E-04 1.27E-02 7.23E-03 pCi/m3 7D1 Avila Gate(543541009) - AC 8-May-21 Iodine-131 4.33E-03 1.52E-02 8.76E-03 pCi/m3 7D1 Avila Gate(544179009) - AC 15-May-21 Iodine-131 1.37E-03 7.87E-03 4.76E-03 pCi/m3 7D1 Avila Gate(544763009) - AC 22-May-21 Iodine-131 1.71E-03 1.42E-02 7.85E-03 pCi/m3 7D1 Avila Gate(545393009) - AC 29-May-21 Iodine-131 1.92E-03 1.21E-02 7.23E-03 pCi/m3 7D1 Avila Gate(546108009) - AC 5-Jun-21 Iodine-131 1.98E-03 1.09E-02 6.08E-03 pCi/m3 7D1 Avila Gate(546499009) - AC 12-Jun-21 Iodine-131 -5.79E-04 9.21E-03 5.64E-03 pCi/m3 7D1 Avila Gate(547342009) - AC 19-Jun-21 Iodine-131 8.30E-04 1.64E-02 1.02E-02 pCi/m3 7D1 Avila Gate(547774009) - AC 26-Jun-21 Iodine-131 -2.09E-04 8.16E-03 4.77E-03 pCi/m3 7D1 Avila Gate(548921009) - AC 3-Jul-21 Iodine-131 -1.78E-03 7.86E-03 4.93E-03 pCi/m3 7D1 Avila Gate(548928009) - AC 10-Jul-21 Iodine-131 1.25E-03 8.42E-03 5.35E-03 pCi/m3 7D1 Avila Gate(549378009) - AC 17-Jul-21 Iodine-131 -6.27E-04 8.93E-03 5.26E-03 pCi/m3 7D1 Avila Gate(550005009) - AC 24-Jul-21 Iodine-131 -2.15E-03 6.54E-03 4.33E-03 pCi/m3 7D1 Avila Gate(550639009) - AC 31-Jul-21 Iodine-131 -8.80E-04 8.17E-03 5.12E-03 pCi/m3 7D1 Avila Gate(552193009) - AC 7-Aug-21 Iodine-131 -1.43E-03 9.64E-03 5.87E-03 pCi/m3 7D1 Avila Gate(552198009) - AC 14-Aug-21 Iodine-131 -2.35E-03 1.22E-02 7.60E-03 pCi/m3 7D1 Avila Gate(553263009) - AC 21-Aug-21 Iodine-131 1.03E-02 1.03E-02 8.25E-03 pCi/m3 7D1 Avila Gate(553498009) - AC 28-Aug-21 Iodine-131 8.61E-04 9.24E-03 6.19E-03 pCi/m3 142

Air Sample Results 7D1 Avila Gate(555509009) - AC 4-Sep-21 Iodine-131 -5.93E-04 1.98E-02 1.17E-02 pCi/m3 7D1 Avila Gate(555390009) - AC 11-Sep-21 Iodine-131 -5.49E-03 8.22E-03 6.22E-03 pCi/m3 7D1 Avila Gate(556242009) - AC 18-Sep-21 Iodine-131 1.07E-03 7.36E-03 4.24E-03 pCi/m3 7D1 Avila Gate(556927009) - AC 25-Sep-21 Iodine-131 2.35E-03 1.17E-02 6.92E-03 pCi/m3 7D1 Avila Gate(557550009) - AC 2-Oct-21 Iodine-131 4.16E-03 1.87E-02 1.06E-02 pCi/m3 7D1 Avila Gate(558462009) - AC 9-Oct-21 Iodine-131 -1.75E-03 1.04E-02 6.62E-03 pCi/m3 7D1 Avila Gate(559199009) - AC 16-Oct-21 Iodine-131 4.67E-03 1.80E-02 9.90E-03 pCi/m3 7D1 Avila Gate(559947009) - AC 23-Oct-21 Iodine-131 -4.37E-03 1.09E-02 7.69E-03 pCi/m3 7D1 Avila Gate(560662009) - AC 30-Oct-21 Iodine-131 1.87E-03 9.88E-03 5.56E-03 pCi/m3 7D1 Avila Gate(561359009) - AC 6-Nov-21 Iodine-131 -5.11E-03 4.27E-03 4.59E-03 pCi/m3 7D1 Avila Gate(562118009) - AC 13-Nov-21 Iodine-131 -2.38E-04 7.56E-03 4.54E-03 pCi/m3 7D1 Avila Gate(562868009) - AC 20-Nov-21 Iodine-131 -1.43E-03 5.10E-03 3.43E-03 pCi/m3 7D1 Avila Gate(563354009) - AC 27-Nov-21 Iodine-131 -2.01E-03 1.34E-02 8.14E-03 pCi/m3 7D1 Avila Gate(564002009) - AC 4-Dec-21 Iodine-131 -5.43E-03 6.64E-03 6.26E-03 pCi/m3 7D1 Avila Gate(564761009) - AC 11-Dec-21 Iodine-131 5.29E-03 1.01E-02 5.60E-03 pCi/m3 7D1 Avila Gate(565497009) - AC 18-Dec-21 Iodine-131 2.29E-03 1.00E-02 5.67E-03 pCi/m3 7D1 Avila Gate(565929009) - AC 25-Dec-21 Iodine-131 -6.60E-03 1.26E-02 9.29E-03 pCi/m3 7D1 Avila Gate AP Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7D1 Avila Gate(531169005) - AP 2-Jan-21 BETA 2.24E-02 2.01E-03 1.04E-02 pCi/m3 7D1 Avila Gate(531664007) - AP 9-Jan-21 BETA 2.94E-02 2.33E-03 1.18E-02 pCi/m3 7D1 Avila Gate(531711005) - AP 16-Jan-21 BETA 4.01E-02 2.23E-03 1.24E-02 pCi/m3 7D1 Avila Gate(532387005) - AP 23-Jan-21 BETA 1.35E-02 2.38E-03 1.36E-02 pCi/m3 7D1 Avila Gate(533988004) - AP 30-Jan-21 BETA 9.07E-03 1.86E-03 9.66E-03 pCi/m3 7D1 Avila Gate(534289005) - AP 6-Feb-21 BETA 3.06E-02 2.46E-03 1.13E-02 pCi/m3 7D1 Avila Gate(534516005) - AP 13-Feb-21 BETA 9.33E-03 2.32E-03 1.08E-02 pCi/m3 7D1 Avila Gate(540519005) - AP 13-Feb-21 Cesium-134 6.91E-05 7.14E-04 4.02E-04 pCi/m3 7D1 Avila Gate(540519005) - AP 13-Feb-21 Cesium-137 -4.96E-05 4.49E-04 2.73E-04 pCi/m3 7D1 Avila Gate(535384005) - AP 20-Feb-21 BETA 1.89E-02 2.27E-03 1.13E-02 pCi/m3 7D1 Avila Gate(535390018) - AP 27-Feb-21 BETA 2.07E-02 2.12E-03 1.11E-02 pCi/m3 7D1 Avila Gate(537221004) - AP 6-Mar-21 BETA 1.89E-02 2.32E-03 1.26E-02 pCi/m3 7D1 Avila Gate(538236004) - AP 13-Mar-21 BETA 7.70E-03 1.79E-03 9.57E-03 pCi/m3 143

Air Sample Results 7D1 Avila Gate(538482005) - AP 20-Mar-21 BETA 1.14E-02 2.29E-03 1.12E-02 pCi/m3 7D1 Avila Gate(538491014) - AP 27-Mar-21 BETA 1.41E-02 2.18E-03 1.09E-02 pCi/m3 7D1 Avila Gate(539118007) - AP 3-Apr-21 BETA 3.51E-02 2.55E-03 1.19E-02 pCi/m3 7D1 Avila Gate(540194007) - AP 10-Apr-21 BETA 2.06E-02 2.02E-03 8.98E-03 pCi/m3 7D1 Avila Gate(541232010) - AP 17-Apr-21 BETA 2.45E-02 2.44E-03 1.26E-02 pCi/m3 7D1 Avila Gate(541392010) - AP 23-Apr-21 BETA 1.17E-02 2.03E-03 1.02E-02 pCi/m3 7D1 Avila Gate(542714010) - AP 1-May-21 BETA 1.08E-02 1.85E-03 8.52E-03 pCi/m3 7D1 Avila Gate(543541010) - AP 8-May-21 BETA 7.58E-03 2.38E-03 1.38E-02 pCi/m3 7D1 Avila Gate(544179010) - AP 15-May-21 BETA 6.95E-03 1.76E-03 8.18E-03 pCi/m3 7D1 Avila Gate(550067004) - AP 15-May-21 Cesium-134 1.41E-04 5.33E-04 2.94E-04 pCi/m3 7D1 Avila Gate(550067004) - AP 15-May-21 Cesium-137 -7.82E-05 3.55E-04 2.35E-04 pCi/m3 7D1 Avila Gate(544763010) - AP 22-May-21 BETA 1.08E-02 2.14E-03 1.08E-02 pCi/m3 7D1 Avila Gate(545393010) - AP 29-May-21 BETA 8.01E-03 2.17E-03 1.05E-02 pCi/m3 7D1 Avila Gate(546108010) - AP 5-Jun-21 BETA 6.37E-03 2.55E-03 1.27E-02 pCi/m3 7D1 Avila Gate(546499010) - AP 12-Jun-21 BETA 1.05E-02 1.97E-03 8.68E-03 pCi/m3 7D1 Avila Gate(547342010) - AP 19-Jun-21 BETA 4.66E-03 2.04E-03 1.03E-02 pCi/m3 7D1 Avila Gate(547774010) - AP 26-Jun-21 BETA 6.17E-03 2.00E-03 1.02E-02 pCi/m3 7D1 Avila Gate(548921010) - AP 3-Jul-21 BETA 3.37E-03 2.09E-03 1.00E-02 pCi/m3 7D1 Avila Gate(548928010) - AP 10-Jul-21 BETA 8.85E-03 2.15E-03 1.03E-02 pCi/m3 7D1 Avila Gate(549378010) - AP 17-Jul-21 BETA 6.07E-03 2.13E-03 1.11E-02 pCi/m3 7D1 Avila Gate(550005010) - AP 24-Jul-21 BETA 1.24E-02 2.06E-03 1.19E-02 pCi/m3 7D1 Avila Gate(550639010) - AP 31-Jul-21 BETA 1.75E-02 2.09E-03 1.22E-02 pCi/m3 7D1 Avila Gate(552193010) - AP 7-Aug-21 BETA 8.40E-03 1.99E-03 1.15E-02 pCi/m3 7D1 Avila Gate(552198010) - AP 14-Aug-21 BETA 1.11E-02 2.04E-03 1.14E-02 pCi/m3 7D1 Avila Gate(559874004) - AP 14-Aug-21 Cesium-134 -1.28E-04 4.07E-04 3.01E-04 pCi/m3 7D1 Avila Gate(559874004) - AP 14-Aug-21 Cesium-137 3.12E-04 4.57E-04 2.75E-04 pCi/m3 7D1 Avila Gate(553263010) - AP 21-Aug-21 BETA 1.58E-02 2.18E-03 1.20E-02 pCi/m3 7D1 Avila Gate(553498010) - AP 28-Aug-21 BETA 1.85E-02 2.07E-03 1.20E-02 pCi/m3 7D1 Avila Gate(555509010) - AP 4-Sep-21 BETA 2.52E-02 2.16E-03 1.24E-02 pCi/m3 7D1 Avila Gate(555390010) - AP 11-Sep-21 BETA 1.66E-02 2.76E-03 1.44E-02 pCi/m3 7D1 Avila Gate(556242010) - AP 18-Sep-21 BETA 1.79E-02 1.76E-03 1.09E-02 pCi/m3 7D1 Avila Gate(556927010) - AP 25-Sep-21 BETA 1.98E-02 2.10E-03 1.21E-02 pCi/m3 7D1 Avila Gate(557550010) - AP 2-Oct-21 BETA 2.45E-02 2.51E-03 1.49E-02 pCi/m3 7D1 Avila Gate(558462010) - AP 9-Oct-21 BETA 1.92E-02 1.88E-03 1.12E-02 pCi/m3 144

Air Sample Results 7D1 Avila Gate(559199010) - AP 16-Oct-21 BETA 3.31E-02 1.93E-03 1.13E-02 pCi/m3 7D1 Avila Gate(559947010) - AP 23-Oct-21 BETA 1.09E-02 2.11E-03 1.11E-02 pCi/m3 7D1 Avila Gate(560662010) - AP 30-Oct-21 BETA 1.34E-02 2.18E-03 1.08E-02 pCi/m3 7D1 Avila Gate(561359010) - AP 6-Nov-21 BETA 2.00E-02 2.06E-03 1.10E-02 pCi/m3 7D1 Avila Gate(562118010) - AP 13-Nov-21 BETA 3.61E-02 2.14E-03 1.17E-02 pCi/m3 7D1 Avila Gate(567610004) - AP 13-Nov-21 Cesium-134 9.85E-05 3.73E-04 2.13E-04 pCi/m3 7D1 Avila Gate(567610004) - AP 13-Nov-21 Cesium-137 -3.34E-05 2.50E-04 1.58E-04 pCi/m3 7D1 Avila Gate(562868010) - AP 20-Nov-21 BETA 5.79E-02 2.00E-03 1.17E-02 pCi/m3 7D1 Avila Gate(563354010) - AP 27-Nov-21 BETA 6.52E-02 1.91E-03 1.21E-02 pCi/m3 7D1 Avila Gate(564002010) - AP 4-Dec-21 BETA 7.57E-02 2.01E-03 1.25E-02 pCi/m3 7D1 Avila Gate(564761010) - AP 11-Dec-21 BETA 2.84E-02 1.96E-03 1.14E-02 pCi/m3 7D1 Avila Gate(565497010) - AP 18-Dec-21 BETA 2.61E-02 2.11E-03 1.23E-02 pCi/m3 7D1 Avila Gate(565929010) - AP 25-Dec-21 BETA 7.53E-03 2.34E-03 1.23E-02 pCi/m3 8S1 Target Range AC Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 8S1 Target Range(531169010) - AC 2-Jan-21 Iodine-131 -1.15E-05 5.93E-03 3.50E-03 pCi/m3 8S1 Target Range(531664012) - AC 9-Jan-21 Iodine-131 2.13E-03 1.17E-02 6.57E-03 pCi/m3 8S1 Target Range(531711010) - AC 16-Jan-21 Iodine-131 1.44E-03 7.17E-03 4.20E-03 pCi/m3 8S1 Target Range(532387010) - AC 23-Jan-21 Iodine-131 2.12E-03 1.14E-02 6.30E-03 pCi/m3 8S1 Target Range(533988015) - AC 30-Jan-21 Iodine-131 -5.69E-03 1.01E-02 7.49E-03 pCi/m3 8S1 Target Range(534289010) - AC 6-Feb-21 Iodine-131 -2.62E-03 1.03E-02 6.52E-03 pCi/m3 8S1 Target Range(534516010) - AC 13-Feb-21 Iodine-131 2.11E-03 8.87E-03 4.95E-03 pCi/m3 8S1 Target Range(535384010) - AC 20-Feb-21 Iodine-131 8.63E-04 9.75E-03 5.95E-03 pCi/m3 8S1 Target Range(535390009) - AC 27-Feb-21 Iodine-131 -1.84E-03 9.37E-03 5.73E-03 pCi/m3 8S1 Target Range(537221015) - AC 6-Mar-21 Iodine-131 8.48E-04 9.39E-03 6.06E-03 pCi/m3 8S1 Target Range(538236015) - AC 13-Mar-21 Iodine-131 7.66E-03 1.19E-02 1.01E-02 pCi/m3 8S1 Target Range(538482012) - AC 20-Mar-21 Iodine-131 -6.07E-03 7.14E-03 6.33E-03 pCi/m3 8S1 Target Range(538491003) - AC 27-Mar-21 Iodine-131 -9.70E-04 1.28E-02 7.52E-03 pCi/m3 8S1 Target Range(539118012) - AC 3-Apr-21 Iodine-131 1.60E-03 1.14E-02 6.34E-03 pCi/m3 8S1 Target Range(540194012) - AC 10-Apr-21 Iodine-131 3.28E-03 1.40E-02 8.07E-03 pCi/m3 8S1 Target Range(541232011) - AC 17-Apr-21 Iodine-131 -1.38E-04 2.13E-02 1.24E-02 pCi/m3 8S1 Target Range(541392011) - AC 23-Apr-21 Iodine-131 1.03E-03 7.70E-03 4.34E-03 pCi/m3 145

Air Sample Results 8S1 Target Range(542714011) - AC 1-May-21 Iodine-131 1.13E-02 1.15E-02 1.32E-02 pCi/m3 8S1 Target Range(543541011) - AC 8-May-21 Iodine-131 -3.15E-03 1.36E-02 8.93E-03 pCi/m3 8S1 Target Range(544179011) - AC 15-May-21 Iodine-131 -7.02E-04 6.71E-03 4.11E-03 pCi/m3 8S1 Target Range(544763011) - AC 22-May-21 Iodine-131 4.06E-03 1.62E-02 8.93E-03 pCi/m3 8S1 Target Range(545393011) - AC 29-May-21 Iodine-131 6.25E-03 2.48E-02 1.35E-02 pCi/m3 8S1 Target Range(546108011) - AC 5-Jun-21 Iodine-131 7.35E-03 1.47E-02 7.71E-03 pCi/m3 8S1 Target Range(546499011) - AC 12-Jun-21 Iodine-131 1.39E-03 7.80E-03 4.32E-03 pCi/m3 8S1 Target Range(547342011) - AC 19-Jun-21 Iodine-131 -2.51E-03 8.61E-03 5.95E-03 pCi/m3 8S1 Target Range(547774011) - AC 26-Jun-21 Iodine-131 -1.92E-03 8.53E-03 5.61E-03 pCi/m3 8S1 Target Range(548921011) - AC 4-Jul-21 Iodine-131 -3.27E-03 5.68E-03 4.38E-03 pCi/m3 8S1 Target Range(548928011) - AC 11-Jul-21 Iodine-131 -1.72E-03 6.49E-03 4.59E-03 pCi/m3 8S1 Target Range(549378011) - AC 17-Jul-21 Iodine-131 -9.12E-04 6.73E-03 4.22E-03 pCi/m3 8S1 Target Range(550005011) - AC 25-Jul-21 Iodine-131 1.45E-03 8.97E-03 5.23E-03 pCi/m3 8S1 Target Range(550639011) - AC 1-Aug-21 Iodine-131 -4.53E-03 8.45E-03 6.68E-03 pCi/m3 8S1 Target Range(552193011) - AC 7-Aug-21 Iodine-131 -1.81E-03 1.05E-02 6.70E-03 pCi/m3 8S1 Target Range(552198011) - AC 14-Aug-21 Iodine-131 1.44E-03 8.31E-03 4.86E-03 pCi/m3 8S1 Target Range(553263011) - AC 21-Aug-21 Iodine-131 7.14E-04 1.02E-02 6.09E-03 pCi/m3 8S1 Target Range(553498011) - AC 28-Aug-21 Iodine-131 1.67E-03 1.49E-02 8.38E-03 pCi/m3 8S1 Target Range(555509011) - AC 4-Sep-21 Iodine-131 1.09E-02 2.13E-02 1.34E-02 pCi/m3 8S1 Target Range(555390011) - AC 11-Sep-21 Iodine-131 4.72E-03 1.08E-02 5.89E-03 pCi/m3 8S1 Target Range(556242011) - AC 18-Sep-21 Iodine-131 7.79E-04 6.99E-03 4.14E-03 pCi/m3 8S1 Target Range(556927011) - AC 25-Sep-21 Iodine-131 -8.73E-04 8.64E-03 5.32E-03 pCi/m3 8S1 Target Range(557550011) - AC 2-Oct-21 Iodine-131 -7.40E-03 1.45E-02 1.24E-02 pCi/m3 8S1 Target Range(558462011) - AC 9-Oct-21 Iodine-131 -1.31E-03 8.97E-03 5.69E-03 pCi/m3 8S1 Target Range(559199011) - AC 16-Oct-21 Iodine-131 -1.03E-03 8.67E-03 5.27E-03 pCi/m3 8S1 Target Range(559947011) - AC 23-Oct-21 Iodine-131 -1.65E-03 1.38E-02 9.40E-03 pCi/m3 8S1 Target Range(560662011) - AC 30-Oct-21 Iodine-131 2.91E-03 1.26E-02 6.96E-03 pCi/m3 8S1 Target Range(561359011) - AC 6-Nov-21 Iodine-131 5.55E-04 8.25E-03 4.70E-03 pCi/m3 8S1 Target Range(562118011) - AC 13-Nov-21 Iodine-131 -1.84E-03 7.36E-03 4.58E-03 pCi/m3 8S1 Target Range(562868011) - AC 20-Nov-21 Iodine-131 1.78E-03 7.83E-03 4.30E-03 pCi/m3 8S1 Target Range(563354011) - AC 27-Nov-21 Iodine-131 -6.88E-04 8.45E-03 5.11E-03 pCi/m3 8S1 Target Range(564002011) - AC 5-Dec-21 Iodine-131 2.45E-03 9.09E-03 5.24E-03 pCi/m3 8S1 Target Range(564761011) - AC 12-Dec-21 Iodine-131 1.01E-03 6.65E-03 3.91E-03 pCi/m3 8S1 Target Range(565497011) - AC 18-Dec-21 Iodine-131 7.48E-04 8.55E-03 5.00E-03 pCi/m3 146

Air Sample Results 8S1 Target Range(565929011) - AC 25-Dec-21 Iodine-131 3.07E-03 1.67E-02 9.18E-03 pCi/m3 8S1 Target Range AC14 Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 8S1 Target Range(531169012) - AC14 2-Jan-21 Carbon-14 -7.72E-08 1.10E-07 6.41E-08 uCi/m3 8S1 Target Range(531664016) - AC14 9-Jan-21 Carbon-14 3.73E-08 1.25E-07 7.50E-08 uCi/m3 8S1 Target Range(531711012) - AC14 16-Jan-21 Carbon-14 1.49E-08 1.02E-07 6.10E-08 uCi/m3 8S1 Target Range(532387012) - AC14 23-Jan-21 Carbon-14 -2.15E-08 1.22E-07 7.25E-08 uCi/m3 8S1 Target Range(533988010) - AC14 30-Jan-21 Carbon-14 5.67E-09 8.98E-08 5.36E-08 uCi/m3 8S1 Target Range(534289012) - AC14 6-Feb-21 Carbon-14 7.98E-09 1.03E-07 6.16E-08 uCi/m3 8S1 Target Range(534516014) - AC14 13-Feb-21 Carbon-14 2.77E-08 1.07E-07 6.45E-08 uCi/m3 8S1 Target Range(535384012) - AC14 20-Feb-21 Carbon-14 7.93E-08 1.05E-07 6.38E-08 uCi/m3 8S1 Target Range(535390013) - AC14 27-Feb-21 Carbon-14 9.12E-08 1.02E-07 6.26E-08 uCi/m3 8S1 Target Range(537221010) - AC14 6-Mar-21 Carbon-14 1.16E-07 1.21E-07 7.43E-08 uCi/m3 8S1 Target Range(538236010) - AC14 13-Mar-21 Carbon-14 8.34E-08 9.55E-08 5.86E-08 uCi/m3 8S1 Target Range(538482014) - AC14 20-Mar-21 Carbon-14 5.62E-08 1.54E-07 9.34E-08 uCi/m3 8S1 Target Range(538491005) - AC14 27-Mar-21 Carbon-14 2.07E-07 1.02E-07 6.49E-08 uCi/m3 8S1 Target Range(539118016) - AC14 3-Apr-21 Carbon-14 7.42E-08 1.20E-07 7.28E-08 uCi/m3 8S1 Target Range(540194014) - AC14 10-Apr-21 Carbon-14 3.82E-08 9.09E-08 5.49E-08 uCi/m3 8S1 Target Range(541232013) - AC14 17-Apr-21 Carbon-14 1.16E-07 1.20E-07 7.38E-08 uCi/m3 8S1 Target Range(541392013) - AC14 23-Apr-21 Carbon-14 6.02E-08 1.03E-07 6.23E-08 uCi/m3 8S1 Target Range(542714013) - AC14 1-May-21 Carbon-14 3.64E-08 1.06E-07 6.39E-08 uCi/m3 8S1 Target Range(543541013) - AC14 8-May-21 Carbon-14 9.02E-08 1.41E-07 8.56E-08 uCi/m3 8S1 Target Range(544179013) - AC14 15-May-21 Carbon-14 5.36E-09 1.07E-07 6.38E-08 uCi/m3 8S1 Target Range(544763013) - AC14 22-May-21 Carbon-14 8.25E-08 1.21E-07 7.34E-08 uCi/m3 8S1 Target Range(545393013) - AC14 29-May-21 Carbon-14 6.62E-08 1.22E-07 7.38E-08 uCi/m3 8S1 Target Range(546108013) - AC14 5-Jun-21 Carbon-14 5.32E-08 1.43E-07 8.58E-08 uCi/m3 8S1 Target Range(546499013) - AC14 12-Jun-21 Carbon-14 8.38E-08 1.06E-07 6.43E-08 uCi/m3 8S1 Target Range(547342013) - AC14 19-Jun-21 Carbon-14 1.23E-08 1.21E-07 7.24E-08 uCi/m3 8S1 Target Range(547774013) - AC14 26-Jun-21 Carbon-14 1.18E-07 1.20E-07 7.34E-08 uCi/m3 8S1 Target Range(548921013) - AC14 4-Jul-21 Carbon-14 2.30E-08 1.12E-07 6.73E-08 uCi/m3 8S1 Target Range(548928013) - AC14 11-Jul-21 Carbon-14 -2.30E-08 1.13E-07 6.70E-08 uCi/m3 8S1 Target Range(549378013) - AC14 17-Jul-21 Carbon-14 -6.71E-08 1.15E-07 6.71E-08 uCi/m3 147

Air Sample Results 8S1 Target Range(550005013) - AC14 25-Jul-21 Carbon-14 7.68E-08 1.06E-07 6.42E-08 uCi/m3 8S1 Target Range(550639013) - AC14 1-Aug-21 Carbon-14 2.32E-08 1.38E-07 8.30E-08 uCi/m3 8S1 Target Range(552193013) - AC14 7-Aug-21 Carbon-14 -6.19E-09 3.23E-07 1.92E-07 uCi/m3 8S1 Target Range(552198013) - AC14 14-Aug-21 Carbon-14 1.02E-07 1.21E-07 7.40E-08 uCi/m3 8S1 Target Range(553263013) - AC14 21-Aug-21 Carbon-14 9.27E-08 2.45E-07 1.51E-07 uCi/m3 8S1 Target Range(553498013) - AC14 28-Aug-21 Carbon-14 -8.17E-08 2.75E-07 1.62E-07 uCi/m3 8S1 Target Range(555509013) - AC14 4-Sep-21 Carbon-14 -2.91E-08 3.27E-07 1.94E-07 uCi/m3 8S1 Target Range(555390013) - AC14 11-Sep-21 Carbon-14 1.71E-07 2.80E-07 1.68E-07 uCi/m3 8S1 Target Range(556242013) - AC14 18-Sep-21 Carbon-14 2.14E-08 2.52E-07 1.51E-07 uCi/m3 8S1 Target Range(556927013) - AC14 25-Sep-21 Carbon-14 -9.11E-08 2.64E-07 1.54E-07 uCi/m3 8S1 Target Range(557550013) - AC14 2-Oct-21 Carbon-14 1.25E-07 3.12E-07 1.90E-07 uCi/m3 8S1 Target Range(558462013) - AC14 9-Oct-21 Carbon-14 1.48E-07 2.10E-07 1.30E-07 uCi/m3 8S1 Target Range(559199013) - AC14 16-Oct-21 Carbon-14 2.34E-07 2.38E-07 1.50E-07 uCi/m3 8S1 Target Range(559947013) - AC14 23-Oct-21 Carbon-14 5.29E-08 2.46E-07 1.48E-07 uCi/m3 8S1 Target Range(560662013) - AC14 30-Oct-21 Carbon-14 1.35E-07 2.60E-07 1.59E-07 uCi/m3 8S1 Target Range(561359013) - AC14 6-Nov-21 Carbon-14 2.37E-08 2.48E-07 1.49E-07 uCi/m3 8S1 Target Range(562118013) - AC14 13-Nov-21 Carbon-14 1.25E-07 2.62E-07 1.60E-07 uCi/m3 8S1 Target Range(562868013) - AC14 20-Nov-21 Carbon-14 8.61E-08 3.82E-07 2.30E-07 uCi/m3 8S1 Target Range(563354013) - AC14 28-Nov-21 Carbon-14 -1.70E-07 3.57E-07 2.07E-07 uCi/m3 8S1 Target Range(564002013) - AC14 5-Dec-21 Carbon-14 3.35E-08 2.29E-07 1.38E-07 uCi/m3 8S1 Target Range(564761013) - AC14 12-Dec-21 Carbon-14 5.55E-08 2.31E-07 1.39E-07 uCi/m3 8S1 Target Range(565497013) - AC14 18-Dec-21 Carbon-14 -1.21E-08 2.40E-07 1.43E-07 uCi/m3 8S1 Target Range(565929013) - AC14 25-Dec-21 Carbon-14 -4.19E-08 2.37E-07 1.40E-07 uCi/m3 8S1 Target Range AP Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 8S1 Target Range(531169011) - AP 2-Jan-21 BETA 1.51E-02 2.00E-03 1.01E-02 pCi/m3 8S1 Target Range(531664013) - AP 9-Jan-21 BETA 2.36E-02 2.65E-03 1.36E-02 pCi/m3 8S1 Target Range(531711011) - AP 16-Jan-21 BETA 3.61E-02 2.05E-03 1.22E-02 pCi/m3 8S1 Target Range(532387011) - AP 23-Jan-21 BETA 1.43E-02 2.41E-03 1.36E-02 pCi/m3 8S1 Target Range(533988005) - AP 30-Jan-21 BETA 1.05E-02 2.05E-03 9.92E-03 pCi/m3 8S1 Target Range(534289011) - AP 6-Feb-21 BETA 2.21E-02 2.32E-03 1.10E-02 pCi/m3 8S1 Target Range(534516011) - AP 13-Feb-21 BETA 7.93E-03 2.11E-03 1.06E-02 pCi/m3 148

Air Sample Results 8S1 Target Range(540519006) - AP 13-Feb-21 Cesium-134 2.68E-05 6.01E-04 3.44E-04 pCi/m3 8S1 Target Range(540519006) - AP 13-Feb-21 Cesium-137 0.00E+00 5.20E-04 0.00E+00 pCi/m3 8S1 Target Range(535384011) - AP 20-Feb-21 BETA 1.42E-02 2.18E-03 1.12E-02 pCi/m3 8S1 Target Range(535390010) - AP 27-Feb-21 BETA 2.28E-02 2.02E-03 1.12E-02 pCi/m3 8S1 Target Range(537221005) - AP 6-Mar-21 BETA 1.90E-02 2.55E-03 1.23E-02 pCi/m3 8S1 Target Range(538236005) - AP 13-Mar-21 BETA 9.81E-03 2.00E-03 9.74E-03 pCi/m3 8S1 Target Range(538482013) - AP 20-Mar-21 BETA 1.18E-02 2.12E-03 1.14E-02 pCi/m3 8S1 Target Range(538491004) - AP 27-Mar-21 BETA 1.58E-02 2.23E-03 1.12E-02 pCi/m3 8S1 Target Range(539118013) - AP 3-Apr-21 BETA 3.09E-02 2.50E-03 1.17E-02 pCi/m3 8S1 Target Range(540194013) - AP 10-Apr-21 BETA 1.45E-02 2.00E-03 9.13E-03 pCi/m3 8S1 Target Range(541232012) - AP 17-Apr-21 BETA 1.99E-02 2.62E-03 1.28E-02 pCi/m3 8S1 Target Range(541392012) - AP 23-Apr-21 BETA 7.83E-03 2.40E-03 1.04E-02 pCi/m3 8S1 Target Range(542714012) - AP 1-May-21 BETA 5.58E-03 2.03E-03 8.56E-03 pCi/m3 8S1 Target Range(543541012) - AP 8-May-21 BETA 5.50E-03 3.06E-03 1.37E-02 pCi/m3 8S1 Target Range(544179012) - AP 15-May-21 BETA 7.89E-03 1.93E-03 8.23E-03 pCi/m3 8S1 Target Range(550067005) - AP 15-May-21 Cesium-134 6.14E-04 8.64E-04 4.73E-04 pCi/m3 8S1 Target Range(550067005) - AP 15-May-21 Cesium-137 3.51E-04 6.69E-04 3.60E-04 pCi/m3 8S1 Target Range(544763012) - AP 22-May-21 BETA 1.05E-02 2.15E-03 1.11E-02 pCi/m3 8S1 Target Range(545393012) - AP 29-May-21 BETA 6.85E-03 2.32E-03 1.03E-02 pCi/m3 8S1 Target Range(546108012) - AP 5-Jun-21 BETA 5.63E-03 2.51E-03 1.27E-02 pCi/m3 8S1 Target Range(546499012) - AP 12-Jun-21 BETA 6.42E-03 1.96E-03 8.92E-03 pCi/m3 8S1 Target Range(547342012) - AP 19-Jun-21 BETA 4.86E-03 2.22E-03 1.03E-02 pCi/m3 8S1 Target Range(547774012) - AP 26-Jun-21 BETA 3.56E-03 2.21E-03 1.03E-02 pCi/m3 8S1 Target Range(548921012) - AP 4-Jul-21 BETA 7.39E-03 2.23E-03 9.94E-03 pCi/m3 8S1 Target Range(548928012) - AP 11-Jul-21 BETA 9.05E-03 2.14E-03 1.04E-02 pCi/m3 8S1 Target Range(549378012) - AP 17-Jul-21 BETA 6.34E-03 2.24E-03 1.10E-02 pCi/m3 8S1 Target Range(550005012) - AP 25-Jul-21 BETA 1.22E-02 2.49E-03 1.14E-02 pCi/m3 8S1 Target Range(550639012) - AP 1-Aug-21 BETA 1.57E-02 2.01E-03 1.21E-02 pCi/m3 8S1 Target Range(552193012) - AP 7-Aug-21 BETA 4.39E-03 2.06E-03 1.18E-02 pCi/m3 8S1 Target Range(552198012) - AP 14-Aug-21 BETA 1.32E-02 2.10E-03 1.16E-02 pCi/m3 8S1 Target Range(559874005) - AP 15-Aug-21 Cesium-134 2.13E-04 4.29E-04 2.35E-04 pCi/m3 8S1 Target Range(559874005) - AP 15-Aug-21 Cesium-137 -5.71E-05 3.75E-04 2.30E-04 pCi/m3 8S1 Target Range(553263012) - AP 21-Aug-21 BETA 1.12E-02 2.11E-03 1.17E-02 pCi/m3 8S1 Target Range(553498012) - AP 28-Aug-21 BETA 1.51E-02 2.06E-03 1.18E-02 pCi/m3 149

Air Sample Results 8S1 Target Range(555509012) - AP 4-Sep-21 BETA 2.25E-02 2.12E-03 1.23E-02 pCi/m3 8S1 Target Range(555390012) - AP 11-Sep-21 BETA 1.36E-02 2.37E-03 1.42E-02 pCi/m3 8S1 Target Range(556242012) - AP 18-Sep-21 BETA 1.85E-02 2.10E-03 1.10E-02 pCi/m3 8S1 Target Range(556927012) - AP 25-Sep-21 BETA 2.18E-02 1.98E-03 1.22E-02 pCi/m3 8S1 Target Range(557550012) - AP 2-Oct-21 BETA 1.98E-02 2.87E-03 1.49E-02 pCi/m3 8S1 Target Range(558462012) - AP 9-Oct-21 BETA 1.79E-02 1.79E-03 1.06E-02 pCi/m3 8S1 Target Range(559199012) - AP 16-Oct-21 BETA 2.96E-02 2.06E-03 1.13E-02 pCi/m3 8S1 Target Range(559947012) - AP 23-Oct-21 BETA 8.82E-03 1.95E-03 1.10E-02 pCi/m3 8S1 Target Range(560662012) - AP 30-Oct-21 BETA 9.93E-03 2.08E-03 1.08E-02 pCi/m3 8S1 Target Range(561359012) - AP 6-Nov-21 BETA 1.67E-02 2.00E-03 1.13E-02 pCi/m3 8S1 Target Range(562118012) - AP 13-Nov-21 BETA 3.56E-02 2.04E-03 1.18E-02 pCi/m3 8S1 Target Range(567610005) - AP 13-Nov-21 Cesium-134 -1.94E-04 2.88E-04 2.59E-04 pCi/m3 8S1 Target Range(567610005) - AP 13-Nov-21 Cesium-137 -3.99E-06 3.16E-04 2.10E-04 pCi/m3 8S1 Target Range(562868012) - AP 20-Nov-21 BETA 4.85E-02 2.10E-03 1.18E-02 pCi/m3 8S1 Target Range(563354012) - AP 27-Nov-21 BETA 7.81E-02 2.47E-03 1.27E-02 pCi/m3 8S1 Target Range(564002012) - AP 5-Dec-21 BETA 7.81E-02 1.97E-03 1.26E-02 pCi/m3 8S1 Target Range(564761012) - AP 12-Dec-21 BETA 2.51E-02 2.17E-03 1.13E-02 pCi/m3 8S1 Target Range(565497012) - AP 18-Dec-21 BETA 3.03E-02 2.21E-03 1.24E-02 pCi/m3 8S1 Target Range(565929012) - AP 25-Dec-21 BETA 8.32E-03 2.04E-03 1.16E-02 pCi/m3 8S2 SW Site Boundary AC Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 8S2 SW Site Boundary(531169006) - AC 2-Jan-21 Iodine-131 -1.41E-04 7.74E-03 4.73E-03 pCi/m3 8S2 SW Site Boundary(531664010) - AC 9-Jan-21 Iodine-131 5.82E-04 1.15E-02 6.47E-03 pCi/m3 8S2 SW Site Boundary(531711006) - AC 16-Jan-21 Iodine-131 2.61E-03 9.28E-03 5.08E-03 pCi/m3 8S2 SW Site Boundary(532387006) - AC 23-Jan-21 Iodine-131 1.15E-03 8.34E-03 4.84E-03 pCi/m3 8S2 SW Site Boundary(533988016) - AC 30-Jan-21 Iodine-131 6.01E-03 1.12E-02 6.16E-03 pCi/m3 8S2 SW Site Boundary(534289006) - AC 6-Feb-21 Iodine-131 9.62E-03 1.64E-02 9.16E-03 pCi/m3 8S2 SW Site Boundary(534516006) - AC 13-Feb-21 Iodine-131 -1.31E-03 8.96E-03 6.05E-03 pCi/m3 8S2 SW Site Boundary(535384006) - AC 20-Feb-21 Iodine-131 -1.46E-03 8.06E-03 4.99E-03 pCi/m3 8S2 SW Site Boundary(535390005) - AC 27-Feb-21 Iodine-131 -1.85E-03 8.01E-03 5.11E-03 pCi/m3 8S2 SW Site Boundary(537221016) - AC 6-Mar-21 Iodine-131 -9.04E-04 6.89E-03 4.18E-03 pCi/m3 8S2 SW Site Boundary(538236016) - AC 13-Mar-21 Iodine-131 -2.02E-03 7.41E-03 5.38E-03 pCi/m3 150

Air Sample Results 8S2 SW Site Boundary(538482009) - AC 20-Mar-21 Iodine-131 1.44E-03 8.81E-03 5.20E-03 pCi/m3 8S2 SW Site Boundary(538491011) - AC 27-Mar-21 Iodine-131 3.04E-03 1.36E-02 8.43E-03 pCi/m3 8S2 SW Site Boundary(539118008) - AC 3-Apr-21 Iodine-131 -1.52E-03 7.59E-03 4.86E-03 pCi/m3 8S2 SW Site Boundary(540194008) - AC 10-Apr-21 Iodine-131 -2.31E-03 9.21E-03 6.18E-03 pCi/m3 8S2 SW Site Boundary(541232014) - AC 17-Apr-21 Iodine-131 -1.18E-03 1.66E-02 9.70E-03 pCi/m3 8S2 SW Site Boundary(541392014) - AC 23-Apr-21 Iodine-131 -3.25E-03 6.00E-03 4.66E-03 pCi/m3 8S2 SW Site Boundary(542714014) - AC 1-May-21 Iodine-131 -8.02E-03 1.73E-02 1.29E-02 pCi/m3 8S2 SW Site Boundary(543541014) - AC 8-May-21 Iodine-131 -3.04E-03 1.10E-02 7.15E-03 pCi/m3 8S2 SW Site Boundary(544179014) - AC 15-May-21 Iodine-131 3.56E-03 8.10E-03 8.43E-03 pCi/m3 8S2 SW Site Boundary(544763014) - AC 22-May-21 Iodine-131 -4.12E-03 1.51E-02 9.41E-03 pCi/m3 8S2 SW Site Boundary(545393014) - AC 29-May-21 Iodine-131 5.56E-03 1.54E-02 8.54E-03 pCi/m3 8S2 SW Site Boundary(546108014) - AC 5-Jun-21 Iodine-131 8.90E-03 1.75E-02 1.07E-02 pCi/m3 8S2 SW Site Boundary(546499014) - AC 12-Jun-21 Iodine-131 -5.77E-04 7.34E-03 4.76E-03 pCi/m3 8S2 SW Site Boundary(547342014) - AC 19-Jun-21 Iodine-131 -1.73E-03 1.14E-02 6.93E-03 pCi/m3 8S2 SW Site Boundary(547774014) - AC 26-Jun-21 Iodine-131 -1.01E-03 7.35E-03 4.47E-03 pCi/m3 8S2 SW Site Boundary(548921014) - AC 3-Jul-21 Iodine-131 1.06E-03 1.13E-02 6.60E-03 pCi/m3 8S2 SW Site Boundary(548928014) - AC 10-Jul-21 Iodine-131 -1.49E-03 6.91E-03 4.52E-03 pCi/m3 8S2 SW Site Boundary(549378014) - AC 17-Jul-21 Iodine-131 3.59E-03 1.15E-02 6.51E-03 pCi/m3 8S2 SW Site Boundary(550005014) - AC 24-Jul-21 Iodine-131 1.03E-03 9.91E-03 5.58E-03 pCi/m3 8S2 SW Site Boundary(550639014) - AC 31-Jul-21 Iodine-131 1.92E-03 1.06E-02 6.21E-03 pCi/m3 8S2 SW Site Boundary(552193014) - AC 7-Aug-21 Iodine-131 4.97E-04 1.17E-02 7.38E-03 pCi/m3 8S2 SW Site Boundary(552198014) - AC 14-Aug-21 Iodine-131 -3.42E-03 7.46E-03 5.37E-03 pCi/m3 8S2 SW Site Boundary(553263014) - AC 21-Aug-21 Iodine-131 4.61E-03 1.14E-02 6.32E-03 pCi/m3 8S2 SW Site Boundary(553498014) - AC 28-Aug-21 Iodine-131 2.41E-04 7.80E-03 5.00E-03 pCi/m3 8S2 SW Site Boundary(555509014) - AC 4-Sep-21 Iodine-131 -2.19E-03 1.58E-02 9.62E-03 pCi/m3 8S2 SW Site Boundary(555390014) - AC 11-Sep-21 Iodine-131 -8.52E-03 1.56E-02 1.13E-02 pCi/m3 8S2 SW Site Boundary(556242014) - AC 18-Sep-21 Iodine-131 3.80E-04 7.98E-03 4.70E-03 pCi/m3 8S2 SW Site Boundary(556927014) - AC 25-Sep-21 Iodine-131 -1.00E-03 6.78E-03 4.14E-03 pCi/m3 8S2 SW Site Boundary(557550014) - AC 2-Oct-21 Iodine-131 3.19E-03 1.67E-02 9.52E-03 pCi/m3 8S2 SW Site Boundary(558462014) - AC 9-Oct-21 Iodine-131 3.53E-03 8.91E-03 4.87E-03 pCi/m3 8S2 SW Site Boundary(559199014) - AC 16-Oct-21 Iodine-131 -5.80E-04 9.58E-03 5.75E-03 pCi/m3 8S2 SW Site Boundary(559947014) - AC 23-Oct-21 Iodine-131 4.29E-05 1.05E-02 6.21E-03 pCi/m3 8S2 SW Site Boundary(560662014) - AC 30-Oct-21 Iodine-131 -5.66E-03 1.07E-02 7.92E-03 pCi/m3 8S2 SW Site Boundary(561359014) - AC 6-Nov-21 Iodine-131 -3.60E-03 8.78E-03 6.16E-03 pCi/m3 151

Air Sample Results 8S2 SW Site Boundary(562118014) - AC 13-Nov-21 Iodine-131 2.19E-03 9.30E-03 5.65E-03 pCi/m3 8S2 SW Site Boundary(562868014) - AC 20-Nov-21 Iodine-131 2.98E-03 8.57E-03 1.08E-02 pCi/m3 8S2 SW Site Boundary(563354014) - AC 27-Nov-21 Iodine-131 -1.75E-03 1.09E-02 7.38E-03 pCi/m3 8S2 SW Site Boundary(564002014) - AC 4-Dec-21 Iodine-131 2.70E-03 8.35E-03 4.48E-03 pCi/m3 8S2 SW Site Boundary(564761014) - AC 11-Dec-21 Iodine-131 5.01E-04 7.92E-03 4.71E-03 pCi/m3 8S2 SW Site Boundary(565497014) - AC 18-Dec-21 Iodine-131 -4.97E-04 5.67E-03 3.35E-03 pCi/m3 8S2 SW Site Boundary(565929014) - AC 25-Dec-21 Iodine-131 5.80E-03 1.46E-02 8.00E-03 pCi/m3 8S2 SW Site Boundary AP Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 8S2 SW Site Boundary(531169007) - AP 2-Jan-21 BETA 1.85E-02 1.97E-03 1.03E-02 pCi/m3 8S2 SW Site Boundary(531664011) - AP 9-Jan-21 BETA 2.52E-02 2.31E-03 1.18E-02 pCi/m3 8S2 SW Site Boundary(531711007) - AP 16-Jan-21 BETA 4.04E-02 2.21E-03 1.24E-02 pCi/m3 8S2 SW Site Boundary(532387007) - AP 23-Jan-21 BETA 1.27E-02 2.52E-03 1.34E-02 pCi/m3 8S2 SW Site Boundary(533988006) - AP 30-Jan-21 BETA 6.39E-03 2.02E-03 9.86E-03 pCi/m3 8S2 SW Site Boundary(534289007) - AP 6-Feb-21 BETA 2.31E-02 2.39E-03 1.12E-02 pCi/m3 8S2 SW Site Boundary(534516007) - AP 13-Feb-21 BETA 8.75E-03 2.44E-03 1.07E-02 pCi/m3 8S2 SW Site Boundary(540519007) - AP 13-Feb-21 Cesium-134 1.53E-04 4.77E-04 2.36E-04 pCi/m3 8S2 SW Site Boundary(540519007) - AP 13-Feb-21 Cesium-137 1.96E-05 5.69E-04 3.30E-04 pCi/m3 8S2 SW Site Boundary(535384007) - AP 20-Feb-21 BETA 1.41E-02 2.15E-03 1.15E-02 pCi/m3 8S2 SW Site Boundary(535390006) - AP 27-Feb-21 BETA 2.12E-02 2.29E-03 1.11E-02 pCi/m3 8S2 SW Site Boundary(537221006) - AP 6-Mar-21 BETA 1.99E-02 2.69E-03 1.28E-02 pCi/m3 8S2 SW Site Boundary(538236006) - AP 13-Mar-21 BETA 1.16E-02 1.91E-03 9.69E-03 pCi/m3 8S2 SW Site Boundary(538482008) - AP 20-Mar-21 BETA 9.64E-03 2.28E-03 1.15E-02 pCi/m3 8S2 SW Site Boundary(538491012) - AP 27-Mar-21 BETA 1.69E-02 2.06E-03 1.09E-02 pCi/m3 8S2 SW Site Boundary(539118009) - AP 3-Apr-21 BETA 3.01E-02 2.52E-03 1.18E-02 pCi/m3 8S2 SW Site Boundary(540194009) - AP 10-Apr-21 BETA 1.68E-02 1.94E-03 8.99E-03 pCi/m3 8S2 SW Site Boundary(541232015) - AP 17-Apr-21 BETA 2.12E-02 2.64E-03 1.29E-02 pCi/m3 8S2 SW Site Boundary(541392015) - AP 23-Apr-21 BETA 1.22E-02 2.15E-03 1.02E-02 pCi/m3 8S2 SW Site Boundary(542714015) - AP 1-May-21 BETA 1.36E-02 2.03E-03 8.69E-03 pCi/m3 8S2 SW Site Boundary(543541015) - AP 8-May-21 BETA 3.27E-03 2.57E-03 1.32E-02 pCi/m3 8S2 SW Site Boundary(544179015) - AP 15-May-21 BETA 6.57E-03 1.85E-03 8.05E-03 pCi/m3 8S2 SW Site Boundary(550067006) - AP 15-May-21 Cesium-134 -1.91E-04 5.21E-04 3.72E-04 pCi/m3 152

Air Sample Results 8S2 SW Site Boundary(550067006) - AP 15-May-21 Cesium-137 1.25E-04 6.09E-04 3.29E-04 pCi/m3 8S2 SW Site Boundary(544763015) - AP 22-May-21 BETA 6.64E-03 2.12E-03 1.09E-02 pCi/m3 8S2 SW Site Boundary(545393015) - AP 29-May-21 BETA 6.32E-03 2.32E-03 1.04E-02 pCi/m3 8S2 SW Site Boundary(546108015) - AP 5-Jun-21 BETA 3.56E-03 2.76E-03 1.29E-02 pCi/m3 8S2 SW Site Boundary(546499015) - AP 12-Jun-21 BETA 9.05E-03 1.78E-03 8.66E-03 pCi/m3 8S2 SW Site Boundary(547342015) - AP 19-Jun-21 BETA 4.29E-03 2.36E-03 1.06E-02 pCi/m3 8S2 SW Site Boundary(547774015) - AP 26-Jun-21 BETA 2.30E-03 2.28E-03 1.04E-02 pCi/m3 8S2 SW Site Boundary(548921015) - AP 3-Jul-21 BETA 2.69E-03 2.16E-03 1.01E-02 pCi/m3 8S2 SW Site Boundary(548928015) - AP 10-Jul-21 BETA 5.17E-03 2.34E-03 1.04E-02 pCi/m3 8S2 SW Site Boundary(549378015) - AP 17-Jul-21 BETA 6.46E-03 2.33E-03 1.10E-02 pCi/m3 8S2 SW Site Boundary(550005015) - AP 24-Jul-21 BETA 1.36E-02 1.98E-03 1.12E-02 pCi/m3 8S2 SW Site Boundary(550639015) - AP 31-Jul-21 BETA 1.42E-02 2.58E-03 1.22E-02 pCi/m3 8S2 SW Site Boundary(552193015) - AP 7-Aug-21 BETA 5.44E-03 2.01E-03 1.19E-02 pCi/m3 8S2 SW Site Boundary(552198015) - AP 14-Aug-21 BETA 1.24E-02 2.43E-03 1.16E-02 pCi/m3 8S2 SW Site Boundary(559874006) - AP 14-Aug-21 Cesium-134 2.71E-04 4.96E-04 2.73E-04 pCi/m3 8S2 SW Site Boundary(559874006) - AP 14-Aug-21 Cesium-137 8.14E-05 3.43E-04 1.96E-04 pCi/m3 8S2 SW Site Boundary(553263015) - AP 21-Aug-21 BETA 1.60E-02 2.15E-03 1.20E-02 pCi/m3 8S2 SW Site Boundary(553498015) - AP 28-Aug-21 BETA 1.57E-02 2.50E-03 1.22E-02 pCi/m3 8S2 SW Site Boundary(555509015) - AP 4-Sep-21 BETA 2.20E-02 2.11E-03 1.23E-02 pCi/m3 8S2 SW Site Boundary(555390015) - AP 11-Sep-21 BETA 1.20E-02 2.35E-03 1.43E-02 pCi/m3 8S2 SW Site Boundary(556242015) - AP 18-Sep-21 BETA 1.87E-02 1.88E-03 1.11E-02 pCi/m3 8S2 SW Site Boundary(556927015) - AP 25-Sep-21 BETA 1.87E-02 2.31E-03 1.20E-02 pCi/m3 8S2 SW Site Boundary(557550015) - AP 2-Oct-21 BETA 1.83E-02 2.67E-03 1.53E-02 pCi/m3 8S2 SW Site Boundary(558462015) - AP 9-Oct-21 BETA 1.80E-02 2.05E-03 1.08E-02 pCi/m3 8S2 SW Site Boundary(559199015) - AP 16-Oct-21 BETA 3.37E-02 2.18E-03 1.17E-02 pCi/m3 8S2 SW Site Boundary(559947015) - AP 23-Oct-21 BETA 1.24E-02 2.05E-03 1.09E-02 pCi/m3 8S2 SW Site Boundary(560662015) - AP 30-Oct-21 BETA 1.24E-02 2.44E-03 1.12E-02 pCi/m3 8S2 SW Site Boundary(561359015) - AP 6-Nov-21 BETA 1.52E-02 2.19E-03 1.08E-02 pCi/m3 8S2 SW Site Boundary(562118015) - AP 13-Nov-21 BETA 3.78E-02 2.12E-03 1.18E-02 pCi/m3 8S2 SW Site Boundary(567610006) - AP 13-Nov-21 Cesium-134 1.45E-04 4.39E-04 2.40E-04 pCi/m3 8S2 SW Site Boundary(567610006) - AP 13-Nov-21 Cesium-137 -7.02E-05 3.42E-04 2.56E-04 pCi/m3 8S2 SW Site Boundary(562868015) - AP 20-Nov-21 BETA 4.71E-02 1.99E-03 1.17E-02 pCi/m3 8S2 SW Site Boundary(563354015) - AP 27-Nov-21 BETA 7.92E-02 2.08E-03 1.27E-02 pCi/m3 8S2 SW Site Boundary(564002015) - AP 4-Dec-21 BETA 7.14E-02 2.49E-03 1.26E-02 pCi/m3 153

Air Sample Results 8S2 SW Site Boundary(564761015) - AP 11-Dec-21 BETA 2.62E-02 2.08E-03 1.12E-02 pCi/m3 8S2 SW Site Boundary(565497015) - AP 18-Dec-21 BETA 2.45E-02 2.26E-03 1.25E-02 pCi/m3 8S2 SW Site Boundary(565929015) - AP 25-Dec-21 BETA 1.28E-02 2.14E-03 1.17E-02 IpCi/m3 I MT1 Meteorological Tower AC Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units MT1 Meteorological Tower(531169008) - AC 2-Jan-21 Iodine-131 5.15E-04 6.58E-03 3.73E-03 pCi/m3 MT1 Meteorological Tower(531664014) - AC 9-Jan-21 Iodine-131 -2.17E-03 6.65E-03 4.47E-03 pCi/m3 MT1 Meteorological Tower(531711008) - AC 16-Jan-21 Iodine-131 -4.08E-03 2.64E-03 3.55E-03 pCi/m3 MT1 Meteorological Tower(532387008) - AC 23-Jan-21 Iodine-131 3.03E-03 9.18E-03 5.23E-03 pCi/m3 MT1 Meteorological Tower(533988017) - AC 30-Jan-21 Iodine-131 -5.02E-03 9.27E-03 6.44E-03 pCi/m3 MT1 Meteorological Tower(534289008) - AC 6-Feb-21 Iodine-131 -6.41E-03 9.24E-03 7.46E-03 pCi/m3 MT1 Meteorological Tower(534516008) - AC 13-Feb-21 Iodine-131 7.99E-04 9.15E-03 5.28E-03 pCi/m3 MT1 Meteorological Tower(535384008) - AC 20-Feb-21 Iodine-131 -6.53E-05 1.19E-02 7.25E-03 pCi/m3 MT1 Meteorological Tower(535390007) - AC 27-Feb-21 Iodine-131 1.40E-03 1.10E-02 6.39E-03 pCi/m3 MT1 Meteorological Tower(537221017) - AC 6-Mar-21 Iodine-131 1.08E-03 1.24E-02 7.21E-03 pCi/m3 MT1 Meteorological Tower(538236017) - AC 13-Mar-21 Iodine-131 2.04E-03 1.24E-02 6.76E-03 pCi/m3 MT1 Meteorological Tower(538482010) - AC 20-Mar-21 Iodine-131 -1.80E-03 7.76E-03 4.91E-03 pCi/m3 MT1 Meteorological Tower(538491001) - AC 27-Mar-21 Iodine-131 3.81E-03 1.08E-02 5.79E-03 pCi/m3 MT1 Meteorological Tower(539118010) - AC 3-Apr-21 Iodine-131 -2.55E-03 1.26E-02 7.64E-03 pCi/m3 MT1 Meteorological Tower(540194010) - AC 10-Apr-21 Iodine-131 -1.42E-03 1.12E-02 6.81E-03 pCi/m3 MT1 Meteorological Tower(541232016) - AC 17-Apr-21 Iodine-131 -2.90E-04 1.35E-02 7.83E-03 pCi/m3 MT1 Meteorological Tower(541392016) - AC 23-Apr-21 Iodine-131 1.19E-02 1.19E-02 1.79E-02 pCi/m3 MT1 Meteorological Tower(542714016) - AC 1-May-21 Iodine-131 -5.49E-03 1.68E-02 1.08E-02 pCi/m3 MT1 Meteorological Tower(543541016) - AC 8-May-21 Iodine-131 2.35E-03 1.31E-02 7.41E-03 pCi/m3 MT1 Meteorological Tower(544179016) - AC 15-May-21 Iodine-131 7.77E-04 8.16E-03 4.59E-03 pCi/m3 MT1 Meteorological Tower(544763016) - AC 22-May-21 Iodine-131 -2.98E-03 1.33E-02 8.30E-03 pCi/m3 MT1 Meteorological Tower(545393016) - AC 29-May-21 Iodine-131 8.63E-05 1.46E-02 8.44E-03 pCi/m3 MT1 Meteorological Tower(546108016) - AC 5-Jun-21 Iodine-131 -1.22E-03 1.63E-02 9.59E-03 pCi/m3 MT1 Meteorological Tower(546499016) - AC 12-Jun-21 Iodine-131 1.02E-03 8.74E-03 5.27E-03 pCi/m3 MT1 Meteorological Tower(547342016) - AC 19-Jun-21 Iodine-131 2.20E-05 1.09E-02 6.83E-03 pCi/m3 MT1 Meteorological Tower(547774016) - AC 26-Jun-21 Iodine-131 2.71E-03 1.06E-02 6.03E-03 pCi/m3 MT1 Meteorological Tower(548921016) - AC 3-Jul-21 Iodine-131 -9.73E-04 8.75E-03 5.27E-03 pCi/m3 154

Air Sample Results MT1 Meteorological Tower(548928016) - AC 10-Jul-21 Iodine-131 8.22E-04 8.36E-03 4.70E-03 pCi/m3 MT1 Meteorological Tower(549378016) - AC 17-Jul-21 Iodine-131 2.61E-03 1.02E-02 5.58E-03 pCi/m3 MT1 Meteorological Tower(550005016) - AC 24-Jul-21 Iodine-131 -3.08E-03 5.85E-03 4.24E-03 pCi/m3 MT1 Meteorological Tower(550639016) - AC 1-Aug-21 Iodine-131 1.06E-03 9.95E-03 5.67E-03 pCi/m3 MT1 Meteorological Tower(552193016) - AC 7-Aug-21 Iodine-131 -5.33E-03 3.97E-03 5.04E-03 pCi/m3 MT1 Meteorological Tower(552198016) - AC 14-Aug-21 Iodine-131 1.50E-03 1.06E-02 5.92E-03 pCi/m3 MT1 Meteorological Tower(553263016) - AC 21-Aug-21 Iodine-131 2.86E-03 1.20E-02 6.62E-03 pCi/m3 MT1 Meteorological Tower(553498016) - AC 28-Aug-21 Iodine-131 1.53E-03 8.06E-03 4.48E-03 pCi/m3 MT1 Meteorological Tower(555509016) - AC 4-Sep-21 Iodine-131 7.22E-03 1.97E-02 1.09E-02 pCi/m3 MT1 Meteorological Tower(555390016) - AC 11-Sep-21 Iodine-131 2.47E-03 1.08E-02 5.96E-03 pCi/m3 MT1 Meteorological Tower(556242016) - AC 18-Sep-21 Iodine-131 2.33E-03 1.24E-02 6.78E-03 pCi/m3 MT1 Meteorological Tower(556927016) - AC 25-Sep-21 Iodine-131 -1.01E-03 8.35E-03 5.08E-03 pCi/m3 MT1 Meteorological Tower(557550016) - AC 2-Oct-21 Iodine-131 -1.88E-03 1.76E-02 1.08E-02 pCi/m3 MT1 Meteorological Tower(558462016) - AC 9-Oct-21 Iodine-131 2.68E-04 1.04E-02 6.17E-03 pCi/m3 MT1 Meteorological Tower(559199016) - AC 16-Oct-21 Iodine-131 4.72E-03 1.53E-02 8.86E-03 pCi/m3 MT1 Meteorological Tower(559947016) - AC 23-Oct-21 Iodine-131 -3.93E-03 8.98E-03 6.72E-03 pCi/m3 MT1 Meteorological Tower(560662016) - AC 30-Oct-21 Iodine-131 -3.91E-04 1.23E-02 8.49E-03 pCi/m3 MT1 Meteorological Tower(561359016) - AC 6-Nov-21 Iodine-131 -1.81E-03 8.30E-03 5.41E-03 pCi/m3 MT1 Meteorological Tower(562118016) - AC 13-Nov-21 Iodine-131 2.44E-03 9.82E-03 5.44E-03 pCi/m3 MT1 Meteorological Tower(562868016) - AC 20-Nov-21 Iodine-131 -1.16E-03 7.99E-03 5.08E-03 pCi/m3 MT1 Meteorological Tower(563354016) - AC 27-Nov-21 Iodine-131 5.74E-04 1.10E-02 6.30E-03 pCi/m3 MT1 Meteorological Tower(564002016) - AC 4-Dec-21 Iodine-131 6.33E-03 6.43E-03 6.03E-03 pCi/m3 MT1 Meteorological Tower(564761016) - AC 11-Dec-21 Iodine-131 -1.70E-03 6.33E-03 4.10E-03 pCi/m3 MT1 Meteorological Tower(565497016) - AC 18-Dec-21 Iodine-131 1.57E-03 8.88E-03 5.03E-03 pCi/m3 MT1 Meteorological Tower(565929016) - AC 25-Dec-21 Iodine-131 -7.06E-04 1.16E-02 6.91E-03 pCi/m3 MT1 Meteorological Tower AP Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units MT1 Meteorological Tower(531169009) - AP 2-Jan-21 BETA 1.16E-02 2.09E-03 1.05E-02 pCi/m3 MT1 Meteorological Tower(531664015) - AP 9-Jan-21 BETA 1.96E-02 2.34E-03 1.18E-02 pCi/m3 MT1 Meteorological Tower(531711009) - AP 16-Jan-21 BETA 3.16E-02 2.15E-03 1.25E-02 pCi/m3 MT1 Meteorological Tower(532387009) - AP 23-Jan-21 BETA 1.55E-02 2.54E-03 1.37E-02 pCi/m3 MT1 Meteorological Tower(533988007) - AP 30-Jan-21 BETA 9.62E-03 2.09E-03 1.02E-02 pCi/m3 155

Air Sample Results MT1 Meteorological Tower(534289009) - AP 6-Feb-21 BETA 1.84E-02 2.15E-03 1.10E-02 pCi/m3 MT1 Meteorological Tower(534516009) - AP 13-Feb-21 BETA 6.17E-03 2.37E-03 1.08E-02 pCi/m3 MT1 Meteorological Tower(540519001) - AP 13-Feb-21 Cesium-134 -1.00E-04 3.38E-04 2.21E-04 pCi/m3 MT1 Meteorological Tower(540519001) - AP 13-Feb-21 Cesium-137 1.64E-04 1.64E-04 2.20E-04 pCi/m3 MT1 Meteorological Tower(535384009) - AP 20-Feb-21 BETA 1.61E-02 2.12E-03 1.11E-02 pCi/m3 MT1 Meteorological Tower(535390008) - AP 27-Feb-21 BETA 1.96E-02 2.14E-03 1.10E-02 pCi/m3 MT1 Meteorological Tower(537221007) - AP 6-Mar-21 BETA 1.76E-02 2.49E-03 1.25E-02 pCi/m3 MT1 Meteorological Tower(538236007) - AP 13-Mar-21 BETA 9.48E-03 1.89E-03 9.91E-03 pCi/m3 MT1 Meteorological Tower(538482011) - AP 20-Mar-21 BETA 9.89E-03 2.13E-03 1.12E-02 pCi/m3 MT1 Meteorological Tower(538491002) - AP 27-Mar-21 BETA 1.29E-02 2.08E-03 1.10E-02 pCi/m3 MT1 Meteorological Tower(539118011) - AP 3-Apr-21 BETA 2.97E-02 2.40E-03 1.15E-02 pCi/m3 MT1 Meteorological Tower(540194011) - AP 10-Apr-21 BETA 1.09E-02 1.86E-03 8.90E-03 pCi/m3 MT1 Meteorological Tower(541232017) - AP 17-Apr-21 BETA 1.83E-02 2.53E-03 1.29E-02 pCi/m3 MT1 Meteorological Tower(541392017) - AP 23-Apr-21 BETA 1.17E-02 2.19E-03 1.05E-02 pCi/m3 MT1 Meteorological Tower(542714017) - AP 1-May-21 BETA 5.46E-03 1.97E-03 8.45E-03 pCi/m3 MT1 Meteorological Tower(543541017) - AP 8-May-21 BETA 8.44E-03 2.58E-03 1.36E-02 pCi/m3 MT1 Meteorological Tower(544179017) - AP 15-May-21 BETA 8.05E-03 1.85E-03 8.13E-03 pCi/m3 MT1 Meteorological Tower(550067007) - AP 15-May-21 Cesium-134 4.15E-05 4.16E-04 2.41E-04 pCi/m3 MT1 Meteorological Tower(550067007) - AP 15-May-21 Cesium-137 -2.66E-04 4.81E-04 3.53E-04 pCi/m3 MT1 Meteorological Tower(544763017) - AP 22-May-21 BETA 7.34E-03 2.00E-03 1.10E-02 pCi/m3 MT1 Meteorological Tower(545393017) - AP 29-May-21 BETA 7.27E-03 2.17E-03 1.03E-02 pCi/m3 MT1 Meteorological Tower(546108017) - AP 5-Jun-21 BETA 4.82E-03 2.97E-03 1.40E-02 pCi/m3 MT1 Meteorological Tower(546499017) - AP 12-Jun-21 BETA 6.27E-03 1.98E-03 8.48E-03 pCi/m3 MT1 Meteorological Tower(547342017) - AP 19-Jun-21 BETA 5.31E-03 2.21E-03 1.04E-02 pCi/m3 MT1 Meteorological Tower(547774017) - AP 26-Jun-21 BETA 3.66E-03 2.18E-03 1.03E-02 pCi/m3 MT1 Meteorological Tower(548921017) - AP 3-Jul-21 BETA 5.66E-03 2.11E-03 1.01E-02 pCi/m3 MT1 Meteorological Tower(548928017) - AP 10-Jul-21 BETA 1.01E-02 2.22E-03 1.05E-02 pCi/m3 MT1 Meteorological Tower(549378017) - AP 17-Jul-21 BETA 4.33E-03 2.19E-03 1.09E-02 pCi/m3 MT1 Meteorological Tower(550005017) - AP 24-Jul-21 BETA 9.99E-03 2.01E-03 1.12E-02 pCi/m3 MT1 Meteorological Tower(550639017) - AP 1-Aug-21 BETA 1.27E-02 2.03E-03 1.19E-02 pCi/m3 MT1 Meteorological Tower(552193017) - AP 7-Aug-21 BETA 4.33E-03 2.56E-03 1.20E-02 pCi/m3 MT1 Meteorological Tower(552198017) - AP 14-Aug-21 BETA 1.06E-02 2.09E-03 1.14E-02 pCi/m3 MT1 Meteorological Tower(559874007) - AP 14-Aug-21 Cesium-134 7.69E-06 3.38E-04 2.04E-04 pCi/m3 MT1 Meteorological Tower(559874007) - AP 14-Aug-21 Cesium-137 -1.27E-04 2.45E-04 1.87E-04 pCi/m3 156

Air Sample Results MT1 Meteorological Tower(553263017) - AP 21-Aug-21 BETA 1.47E-02 2.47E-03 1.18E-02 pCi/m3 MT1 Meteorological Tower(553498017) - AP 28-Aug-21 BETA 1.42E-02 2.10E-03 1.19E-02 pCi/m3 MT1 Meteorological Tower(555509017) - AP 4-Sep-21 BETA 2.18E-02 2.49E-03 1.22E-02 pCi/m3 MT1 Meteorological Tower(555390017) - AP 11-Sep-21 BETA 9.26E-03 2.30E-03 1.41E-02 pCi/m3 MT1 Meteorological Tower(556242017) - AP 18-Sep-21 BETA 2.18E-02 1.92E-03 1.11E-02 pCi/m3 MT1 Meteorological Tower(556927017) - AP 25-Sep-21 BETA 2.32E-02 2.08E-03 1.24E-02 pCi/m3 MT1 Meteorological Tower(557550017) - AP 2-Oct-21 BETA 1.71E-02 2.55E-03 1.51E-02 pCi/m3 MT1 Meteorological Tower(558462017) - AP 9-Oct-21 BETA 1.52E-02 1.87E-03 1.08E-02 pCi/m3 MT1 Meteorological Tower(559199017) - AP 16-Oct-21 BETA 2.96E-02 2.04E-03 1.11E-02 pCi/m3 MT1 Meteorological Tower(559947017) - AP 23-Oct-21 BETA 1.29E-02 2.26E-03 1.17E-02 pCi/m3 MT1 Meteorological Tower(560662017) - AP 30-Oct-21 BETA 1.49E-02 2.15E-03 1.09E-02 pCi/m3 MT1 Meteorological Tower(561359017) - AP 6-Nov-21 BETA 1.49E-02 2.05E-03 1.12E-02 pCi/m3 MT1 Meteorological Tower(562118017) - AP 13-Nov-21 BETA 3.42E-02 2.10E-03 1.18E-02 pCi/m3 MT1 Meteorological Tower(567610007) - AP 13-Nov-21 Cesium-134 -4.85E-05 3.89E-04 2.46E-04 pCi/m3 MT1 Meteorological Tower(567610007) - AP 13-Nov-21 Cesium-137 -7.12E-05 3.29E-04 2.11E-04 pCi/m3 MT1 Meteorological Tower(562868017) - AP 20-Nov-21 BETA 4.66E-02 2.07E-03 1.17E-02 pCi/m3 MT1 Meteorological Tower(563354017) - AP 27-Nov-21 BETA 6.37E-02 1.99E-03 1.22E-02 pCi/m3 MT1 Meteorological Tower(564002017) - AP 4-Dec-21 BETA 8.15E-02 2.09E-03 1.28E-02 pCi/m3 MT1 Meteorological Tower(564761017) - AP 11-Dec-21 BETA 2.74E-02 2.21E-03 1.14E-02 pCi/m3 MT1 Meteorological Tower(565497017) - AP 18-Dec-21 BETA 2.69E-02 2.33E-03 1.26E-02 pCi/m3 MT1 Meteorological Tower(565929017) - AP 25-Dec-21 BETA 4.53E-03 2.18E-03 1.17E-02 pCi/m3 157

Algae and Kelp Sample Results 7C2 Rattlesnake Canyon AV Algae Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C2 Rattlesnake Canyon(531170002) - AV Algae 11-Jan-21 Cesium-134 -2.40E+00 9.81E+00 6.86E+00 pCi/kg 7C2 Rattlesnake Canyon(531170002) - AV Algae 11-Jan-21 Cesium-137 -6.22E-01 8.89E+00 5.18E+00 pCi/kg 7C2 Rattlesnake Canyon(531170002) - AV Algae 11-Jan-21 Cobalt-58 1.64E+00 8.78E+00 5.05E+00 pCi/kg 7C2 Rattlesnake Canyon(531170002) - AV Algae 11-Jan-21 Cobalt-60 -5.60E-01 1.02E+01 6.26E+00 pCi/kg 7C2 Rattlesnake Canyon(541780001) - AV Algae 21-Apr-21 Cesium-134 8.61E+00 1.39E+01 8.57E+00 pCi/kg 7C2 Rattlesnake Canyon(541780001) - AV Algae 21-Apr-21 Cesium-137 5.37E+00 1.14E+01 6.78E+00 pCi/kg 7C2 Rattlesnake Canyon(541780001) - AV Algae 21-Apr-21 Cobalt-58 -1.81E+00 1.07E+01 6.76E+00 pCi/kg 7C2 Rattlesnake Canyon(541780001) - AV Algae 21-Apr-21 Cobalt-60 -6.03E+00 7.70E+00 7.28E+00 pCi/kg 7C2 Rattlesnake Canyon(555288001) - AV Algae 26-Aug-21 Cesium-134 9.25E+00 1.03E+01 8.59E+00 pCi/kg 7C2 Rattlesnake Canyon(555288001) - AV Algae 26-Aug-21 Cesium-137 2.51E+00 8.89E+00 5.31E+00 pCi/kg 7C2 Rattlesnake Canyon(555288001) - AV Algae 26-Aug-21 Cobalt-58 7.91E-02 1.01E+01 5.86E+00 pCi/kg 7C2 Rattlesnake Canyon(555288001) - AV Algae 26-Aug-21 Cobalt-60 -1.01E+00 1.07E+01 6.54E+00 pCi/kg 7C2 Rattlesnake Canyon(563364004) - AV Algae 30-Nov-21 Cesium-134 -2.36E-01 1.13E+01 6.96E+00 pCi/kg 7C2 Rattlesnake Canyon(563364004) - AV Algae 30-Nov-21 Cesium-137 2.59E+00 1.08E+01 6.34E+00 pCi/kg 7C2 Rattlesnake Canyon(563364004) - AV Algae 30-Nov-21 Cobalt-58 2.18E+00 1.20E+01 7.13E+00 pCi/kg 7C2 Rattlesnake Canyon(563364004) - AV Algae 30-Nov-21 Cobalt-60 1.40E+01 1.42E+01 1.08E+01 pCi/kg 7C2 Rattlesnake Canyon AV Kelp Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C2 Rattlesnake Canyon(532732001) - AV Kelp 20-Jan-21 Cesium-134 2.23E+00 1.23E+01 8.12E+00 pCi/kg 7C2 Rattlesnake Canyon(532732001) - AV Kelp 20-Jan-21 Cesium-137 9.65E-01 1.05E+01 6.22E+00 pCi/kg 7C2 Rattlesnake Canyon(532732001) - AV Kelp 20-Jan-21 Cobalt-58 2.63E+00 1.10E+01 6.53E+00 pCi/kg 7C2 Rattlesnake Canyon(532732001) - AV Kelp 20-Jan-21 Cobalt-60 -4.58E-01 1.17E+01 7.31E+00 pCi/kg 7C2 Rattlesnake Canyon(539119002) - AV Kelp 5-Apr-21 Cesium-134 2.19E+00 8.31E+00 4.72E+00 pCi/kg 7C2 Rattlesnake Canyon(539119002) - AV Kelp 5-Apr-21 Cesium-137 4.05E+00 7.55E+00 5.04E+00 pCi/kg 7C2 Rattlesnake Canyon(539119002) - AV Kelp 5-Apr-21 Cobalt-58 -4.93E-01 7.90E+00 4.61E+00 pCi/kg 7C2 Rattlesnake Canyon(539119002) - AV Kelp 5-Apr-21 Cobalt-60 -7.24E+00 8.23E+00 6.62E+00 pCi/kg 7C2 Rattlesnake Canyon(550003001) - AV Kelp 19-Jul-21 Cesium-134 5.34E-02 8.36E+00 5.65E+00 pCi/kg 7C2 Rattlesnake Canyon(550003001) - AV Kelp 19-Jul-21 Cesium-137 1.17E+00 8.20E+00 4.75E+00 pCi/kg 7C2 Rattlesnake Canyon(550003001) - AV Kelp 19-Jul-21 Cobalt-58 1.80E+00 9.03E+00 5.98E+00 pCi/kg 158

Algae and Kelp Sample Results 7C2 Rattlesnake Canyon(550003001) - AV Kelp 19-Jul-21 Cobalt-60 1.94E+00 9.46E+00 6.13E+00 pCi/kg 7C2 Rattlesnake Canyon(559605001) - AV Kelp 18-Oct-21 Cesium-134 5.21E+00 1.12E+01 6.81E+00 pCi/kg 7C2 Rattlesnake Canyon(559605001) - AV Kelp 18-Oct-21 Cesium-137 2.98E+00 9.47E+00 5.62E+00 pCi/kg 7C2 Rattlesnake Canyon(559605001) - AV Kelp 18-Oct-21 Cobalt-58 -1.36E+00 8.83E+00 5.57E+00 pCi/kg 7C2 Rattlesnake Canyon(559605001) - AV Kelp 18-Oct-21 Cobalt-60 2.76E+00 1.11E+01 7.14E+00 pCi/kg DCM Diablo Cove Marine AV Kelp Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DCM Diablo Cove Marine(532732002) - AV Kelp 20-Jan-21 Cesium-134 6.68E+00 1.64E+01 9.77E+00 pCi/kg DCM Diablo Cove Marine(532732002) - AV Kelp 20-Jan-21 Cesium-137 -8.46E+00 1.16E+01 8.82E+00 pCi/kg DCM Diablo Cove Marine(532732002) - AV Kelp 20-Jan-21 Cobalt-58 -2.24E+00 1.30E+01 8.22E+00 pCi/kg DCM Diablo Cove Marine(532732002) - AV Kelp 20-Jan-21 Cobalt-60 -1.71E+00 1.65E+01 9.91E+00 pCi/kg DCM Diablo Cove Marine(539119004) - AV Kelp 5-Apr-21 Cesium-134 4.52E+00 1.20E+01 1.20E+01 pCi/kg DCM Diablo Cove Marine(539119004) - AV Kelp 5-Apr-21 Cesium-137 5.30E-01 1.06E+01 6.17E+00 pCi/kg DCM Diablo Cove Marine(539119004) - AV Kelp 5-Apr-21 Cobalt-58 4.83E-01 8.72E+00 5.73E+00 pCi/kg DCM Diablo Cove Marine(539119004) - AV Kelp 5-Apr-21 Cobalt-60 -4.84E-01 1.25E+01 7.79E+00 pCi/kg DCM Diablo Cove Marine(550003004) - AV Kelp 19-Jul-21 Cesium-134 4.58E+00 1.61E+01 9.29E+00 pCi/kg DCM Diablo Cove Marine(550003004) - AV Kelp 19-Jul-21 Cesium-137 7.80E+00 1.46E+01 1.11E+01 pCi/kg DCM Diablo Cove Marine(550003004) - AV Kelp 19-Jul-21 Cobalt-58 4.08E+00 1.51E+01 8.68E+00 pCi/kg DCM Diablo Cove Marine(550003004) - AV Kelp 19-Jul-21 Cobalt-60 3.27E-01 1.79E+01 1.04E+01 pCi/kg DCM Diablo Cove Marine(559605002) - AV Kelp 18-Oct-21 Cesium-134 4.34E+00 1.50E+01 8.77E+00 pCi/kg DCM Diablo Cove Marine(559605002) - AV Kelp 18-Oct-21 Cesium-137 1.59E+00 1.29E+01 7.49E+00 pCi/kg DCM Diablo Cove Marine(559605002) - AV Kelp 18-Oct-21 Cobalt-58 2.78E+00 1.30E+01 7.56E+00 pCi/kg DCM Diablo Cove Marine(559605002) - AV Kelp 18-Oct-21 Cobalt-60 3.12E+00 1.71E+01 9.77E+00 pCi/kg PON Pacific Ocean North of Diablo Cove AV Kelp Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units PON Pacific Ocean North of Diablo Cove(532732003) - AV Kelp 20-Jan-21 Cesium-134 3.59E+00 1.19E+01 7.21E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532732003) - AV Kelp 20-Jan-21 Cesium-137 -9.01E+00 1.00E+01 8.28E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532732003) - AV Kelp 20-Jan-21 Cobalt-58 1.14E+00 9.97E+00 6.07E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532732003) - AV Kelp 20-Jan-21 Cobalt-60 -3.46E+00 1.14E+01 7.42E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(539119003) - AV Kelp 5-Apr-21 Cesium-134 8.61E-01 1.88E+01 1.09E+01 pCi/kg 159

Algae and Kelp Sample Results PON Pacific Ocean North of Diablo Cove(539119003) - AV Kelp 5-Apr-21 Cesium-137 3.62E+00 1.58E+01 9.35E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(539119003) - AV Kelp 5-Apr-21 Cobalt-58 3.77E+00 1.76E+01 1.02E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(539119003) - AV Kelp 5-Apr-21 Cobalt-60 1.56E+00 2.21E+01 1.30E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(550003003) - AV Kelp 19-Jul-21 Cesium-134 -6.50E+00 9.00E+00 6.83E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(550003003) - AV Kelp 19-Jul-21 Cesium-137 -2.48E+00 7.49E+00 4.90E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(550003003) - AV Kelp 19-Jul-21 Cobalt-58 7.81E-01 8.29E+00 5.00E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(550003003) - AV Kelp 19-Jul-21 Cobalt-60 1.05E+00 1.00E+01 5.81E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(559605003) - AV Kelp 18-Oct-21 Cesium-134 1.01E+00 1.15E+01 6.88E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(559605003) - AV Kelp 18-Oct-21 Cesium-137 1.16E+00 9.16E+00 5.40E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(559605003) - AV Kelp 18-Oct-21 Cobalt-58 -3.89E+00 9.77E+00 6.59E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(559605003) - AV Kelp 18-Oct-21 Cobalt-60 2.21E+00 1.16E+01 6.64E+00 pCi/kg POS Pacific Ocean South of Diablo Cove AV Kelp Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units POS Pacific Ocean South of Diablo Cove(532732004) - AV Kelp 20-Jan-21 Cesium-134 3.84E+00 9.25E+00 5.55E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532732004) - AV Kelp 20-Jan-21 Cesium-137 2.41E+00 8.80E+00 5.23E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532732004) - AV Kelp 20-Jan-21 Cobalt-58 3.64E+00 9.31E+00 5.63E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532732004) - AV Kelp 20-Jan-21 Cobalt-60 4.37E+00 1.16E+01 6.74E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(539119001) - AV Kelp 5-Apr-21 Cesium-134 2.63E+00 1.18E+01 6.96E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(539119001) - AV Kelp 5-Apr-21 Cesium-137 -2.84E+00 8.60E+00 5.38E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(539119001) - AV Kelp 5-Apr-21 Cobalt-58 -7.25E-01 1.02E+01 6.04E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(539119001) - AV Kelp 5-Apr-21 Cobalt-60 1.67E+00 1.30E+01 7.76E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(550003002) - AV Kelp 19-Jul-21 Cesium-134 5.03E+00 1.14E+01 6.85E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(550003002) - AV Kelp 19-Jul-21 Cesium-137 -4.17E+00 9.65E+00 6.44E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(550003002) - AV Kelp 19-Jul-21 Cobalt-58 -2.30E+00 1.08E+01 6.86E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(550003002) - AV Kelp 19-Jul-21 Cobalt-60 1.31E+00 1.18E+01 6.81E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(559605004) - AV Kelp 18-Oct-21 Cesium-134 -1.63E-01 1.11E+01 6.57E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(559605004) - AV Kelp 18-Oct-21 Cesium-137 3.38E-01 1.05E+01 6.10E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(559605004) - AV Kelp 18-Oct-21 Cobalt-58 2.34E+00 1.11E+01 6.46E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(559605004) - AV Kelp 18-Oct-21 Cobalt-60 -1.71E+00 1.32E+01 7.90E+00 pCi/kg 160

Drinking Water Sample Results 1A2 Blanchard Spring DW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 BETA 1.57E+00 1.48E+00 9.93E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Barium-140 1.09E+00 6.19E+00 3.59E+00 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Cesium-134 -2.62E-02 1.45E+00 8.73E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Cesium-137 2.89E-01 1.39E+00 8.14E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Cobalt-58 -7.53E-02 1.27E+00 7.71E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Cobalt-60 1.42E+00 1.42E+00 1.72E+00 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Iodine-131 -4.31E-02 8.52E-01 5.17E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Iron-55 7.79E+01 9.34E+01 6.36E+01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Iron-59 3.51E-01 2.56E+00 2.18E+00 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Lanthanum-140 -7.19E-01 2.08E+00 1.36E+00 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Manganese-54 4.02E-02 1.19E+00 7.18E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Nickel-63 2.09E+00 4.62E+01 2.76E+01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Niobium-95 -1.73E-01 1.17E+00 8.13E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Total Strontium 6.52E-01 1.53E+00 9.66E-01 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Tritium 7.72E+01 2.91E+02 1.78E+02 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Zinc-65 4.15E-01 2.82E+00 2.29E+00 pCi/L 1A2 Blanchard Spring(531666004) - DW 13-Jan-21 Zirconium-95 -4.43E-02 2.23E+00 1.34E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 BETA 1.01E+01 2.06E+00 2.27E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Barium-140 -2.27E+00 9.62E+00 5.84E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Cesium-134 4.99E-01 1.56E+00 9.15E-01 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Cesium-137 2.16E-01 1.51E+00 8.80E-01 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Cobalt-58 -1.74E-01 1.44E+00 8.79E-01 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Cobalt-60 6.34E-01 1.64E+00 1.47E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Iodine-131 1.42E-01 7.28E-01 4.38E-01 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Iron-55 -2.17E+00 6.41E+01 4.52E+01 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Iron-59 -3.35E-01 3.15E+00 2.23E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Lanthanum-140 3.53E-01 3.44E+00 1.98E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Manganese-54 1.38E-01 1.39E+00 8.25E-01 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Nickel-63 1.91E+00 2.27E+01 1.37E+01 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Niobium-95 6.68E-01 1.64E+00 1.07E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Total Strontium 1.50E-01 9.12E-01 5.55E-01 pCi/L 161

Drinking Water Sample Results 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Tritium 2.22E+02 2.68E+02 1.76E+02 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Zinc-65 4.11E-01 3.03E+00 2.04E+00 pCi/L 1A2 Blanchard Spring(540195005) - DW 14-Apr-21 Zirconium-95 5.28E-01 2.74E+00 1.60E+00 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 BETA 1.21E+00 2.04E+00 1.29E+00 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Barium-140 1.69E+00 9.10E+00 5.24E+00 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Cesium-134 3.27E-01 1.60E+00 9.39E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Cesium-137 6.25E-01 1.50E+00 8.84E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Cobalt-58 -2.90E-01 1.47E+00 9.13E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Cobalt-60 3.69E-01 1.53E+00 8.63E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Iodine-131 1.32E-01 8.64E-01 4.96E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Iron-55 3.55E+00 6.11E+01 3.86E+01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Iron-59 5.83E-02 3.43E+00 2.10E+00 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Lanthanum-140 6.12E-01 3.31E+00 1.90E+00 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Manganese-54 3.25E-01 1.40E+00 8.27E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Nickel-63 5.07E+00 2.30E+01 1.39E+01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Niobium-95 -3.91E-01 1.49E+00 9.37E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Total Strontium 3.89E-01 6.06E-01 4.14E-01 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Tritium 2.87E+01 3.13E+02 1.88E+02 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Zinc-65 -1.01E+00 2.34E+00 1.86E+00 pCi/L 1A2 Blanchard Spring(554636004) - DW 2-Sep-21 Zirconium-95 2.31E+00 2.49E+00 4.49E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 BETA 6.20E+00 2.47E+00 1.97E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Barium-140 -2.26E-01 9.98E+00 6.74E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Cesium-134 3.45E-01 1.61E+00 9.19E-01 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Cesium-137 -4.55E-01 1.44E+00 9.39E-01 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Cobalt-58 -1.43E+00 1.40E+00 1.13E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Cobalt-60 -1.13E+00 1.46E+00 1.41E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Iodine-131 -2.39E-02 8.99E-01 5.36E-01 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Iron-55 -7.59E+00 8.24E+01 6.13E+01 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Iron-59 -3.42E-01 3.44E+00 2.08E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Lanthanum-140 1.88E-01 4.20E+00 2.43E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Manganese-54 5.60E-01 1.66E+00 9.60E-01 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Nickel-63 -6.04E+00 2.91E+01 1.72E+01 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Niobium-95 -1.35E-01 1.79E+00 1.04E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Total Strontium -2.59E-01 1.77E+00 1.02E+00 pCi/L 162

Drinking Water Sample Results 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Tritium 5.77E+01 2.78E+02 1.69E+02 pCi/L I I 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Zinc-65 8.73E-01 3.39E+00 2.22E+00 pCi/L 1A2 Blanchard Spring(562132006) - DW 16-Nov-21 Zirconium-95 -1.03E+00 3.04E+00 2.98E+00 pCi/L 5S2 Diablo Creek Weir DW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 BETA 3.09E+00 2.23E+00 1.53E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Barium-140 2.71E+00 8.21E+00 4.88E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Cesium-134 5.74E-01 2.02E+00 1.23E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Cesium-137 -4.41E-01 1.72E+00 1.10E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Cobalt-58 -2.90E-01 1.69E+00 1.14E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Cobalt-60 -4.75E-01 1.75E+00 1.13E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Iodine-131 8.45E-02 7.39E-01 4.34E-01 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Iron-55 4.61E+01 8.75E+01 5.76E+01 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Iron-59 -1.90E+00 3.33E+00 2.32E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Lanthanum-140 -3.78E+00 3.06E+00 6.80E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Manganese-54 -5.43E-01 1.67E+00 1.03E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Nickel-63 6.26E+00 4.21E+01 2.53E+01 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Niobium-95 1.04E+00 1.82E+00 1.13E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Total Strontium 3.27E-01 1.32E+00 8.19E-01 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Tritium -8.44E+00 2.90E+02 1.72E+02 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Zinc-65 3.02E-01 3.54E+00 2.35E+00 pCi/L 5S2 Diablo Creek Weir(531666003) - DW 13-Jan-21 Zirconium-95 3.97E-01 2.94E+00 1.78E+00 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 BETA 2.98E-01 3.08E+00 1.85E+00 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Barium-140 -1.84E+00 5.80E+00 3.66E+00 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Cesium-134 -2.44E-01 1.34E+00 8.47E-01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Cesium-137 2.98E-01 1.38E+00 8.18E-01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Cobalt-58 -5.25E-02 1.24E+00 7.64E-01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Cobalt-60 -1.30E-01 1.20E+00 7.26E-01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Iodine-131 -3.23E-01 6.02E-01 5.34E-01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Iron-55 -1.19E+00 8.71E+01 5.69E+01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Iron-59 -3.07E-01 2.44E+00 1.45E+00 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Lanthanum-140 2.44E-03 1.74E+00 1.04E+00 pCi/L 163

Drinking Water Sample Results 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Manganese-54 -7.75E-01 1.14E+00 8.46E-01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Nickel-63 -7.31E+00 3.27E+01 1.92E+01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Niobium-95 -1.40E+00 1.28E+00 1.28E+00 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Total Strontium 4.66E-01 8.36E-01 5.64E-01 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Tritium -7.93E+00 2.79E+02 1.66E+02 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Zinc-65 -1.66E+00 2.69E+00 2.58E+00 pCi/L 5S2 Diablo Creek Weir(533664003) - DW 2-Feb-21 Zirconium-95 5.71E-01 2.31E+00 1.38E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 BETA 2.02E+00 2.37E+00 1.52E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Barium-140 6.83E+00 1.17E+01 7.24E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Cesium-134 4.20E-01 1.72E+00 1.04E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Cesium-137 5.83E-01 1.51E+00 1.63E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Cobalt-58 2.61E-01 1.60E+00 9.67E-01 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Cobalt-60 7.53E-02 1.53E+00 8.95E-01 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Iodine-131 -4.82E-01 7.95E-01 5.41E-01 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Iron-55 -3.07E+01 1.13E+02 8.42E+01 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Iron-59 5.11E-01 3.25E+00 2.09E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Lanthanum-140 9.74E-01 3.75E+00 2.17E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Manganese-54 -1.82E-01 1.42E+00 8.92E-01 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Nickel-63 4.22E+00 2.45E+01 1.49E+01 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Niobium-95 2.70E-01 1.56E+00 2.03E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Total Strontium 8.84E-03 1.08E+00 6.41E-01 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Tritium 1.21E+02 2.24E+02 1.41E+02 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Zinc-65 8.30E-01 3.21E+00 2.06E+00 pCi/L 5S2 Diablo Creek Weir(535385001) - DW 2-Mar-21 Zirconium-95 4.86E-01 2.83E+00 1.90E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 BETA 3.12E+00 2.35E+00 1.59E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Barium-140 1.74E+00 1.26E+01 7.70E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Cesium-134 -1.63E+00 1.81E+00 1.82E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Cesium-137 2.85E-01 1.76E+00 1.01E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Cobalt-58 2.13E-01 1.87E+00 1.09E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Cobalt-60 -1.38E-02 1.75E+00 1.02E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Iodine-131 -2.85E-02 5.85E-01 3.40E-01 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Iron-55 -1.28E+01 6.31E+01 4.40E+01 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Iron-59 1.14E+00 4.03E+00 2.39E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Lanthanum-140 -2.21E+00 3.92E+00 3.19E+00 pCi/L 164

Drinking Water Sample Results 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Manganese-54 1.17E-01 1.73E+00 1.02E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Nickel-63 3.08E+00 2.33E+01 1.41E+01 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Niobium-95 -3.31E+00 1.74E+00 2.28E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Total Strontium -3.38E-01 1.36E+00 7.80E-01 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Tritium 1.67E+02 2.41E+02 1.56E+02 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Zinc-65 -2.26E+00 3.24E+00 2.43E+00 pCi/L 5S2 Diablo Creek Weir(540195003) - DW 14-Apr-21 Zirconium-95 -3.31E-01 3.15E+00 1.88E+00 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 BETA 1.03E+00 3.06E+00 1.86E+00 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Barium-140 -1.98E+00 7.26E+00 6.61E+00 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Cesium-134 6.26E-01 1.67E+00 9.70E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Cesium-137 3.50E-01 1.53E+00 9.29E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Cobalt-58 -1.20E-01 1.32E+00 7.78E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Cobalt-60 -5.47E-01 1.40E+00 9.51E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Iodine-131 6.47E-02 4.40E-01 2.51E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Iron-55 -4.24E+01 1.26E+02 9.23E+01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Iron-59 1.49E-01 3.17E+00 1.88E+00 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Lanthanum-140 1.90E+00 2.84E+00 1.87E+00 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Manganese-54 -3.31E-01 1.36E+00 8.34E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Nickel-63 4.32E+00 2.27E+01 1.38E+01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Niobium-95 6.19E-01 1.60E+00 9.33E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Total Strontium -3.80E-01 1.42E+00 8.18E-01 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Tritium -1.23E+02 3.34E+02 1.92E+02 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Zinc-65 2.41E-01 3.15E+00 1.87E+00 pCi/L 5S2 Diablo Creek Weir(542717002) - DW 4-May-21 Zirconium-95 7.22E-01 2.61E+00 1.50E+00 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 BETA 8.81E+00 2.56E+00 2.31E+00 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Barium-140 1.51E-01 6.31E+00 3.65E+00 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Cesium-134 3.66E-01 1.44E+00 8.42E-01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Cesium-137 -3.10E-01 1.14E+00 7.10E-01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Cobalt-58 -7.94E-01 1.31E+00 1.22E+00 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Cobalt-60 1.17E+00 1.25E+00 9.15E-01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Iodine-131 8.54E-02 7.47E-01 4.28E-01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Iron-55 -6.04E+01 1.19E+02 8.06E+01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Iron-59 -1.25E+00 2.42E+00 1.70E+00 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Lanthanum-140 -2.77E-03 2.25E+00 1.31E+00 pCi/L 165

Drinking Water Sample Results 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Manganese-54 3.30E-01 1.25E+00 7.34E-01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Nickel-63 1.86E+00 3.21E+01 1.92E+01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Niobium-95 -1.62E-01 1.16E+00 7.06E-01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Total Strontium 8.29E-01 1.17E+00 8.01E-01 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Tritium 1.38E+02 2.32E+02 1.47E+02 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Zinc-65 2.38E-01 2.49E+00 1.49E+00 pCi/L 5S2 Diablo Creek Weir(545965003) - DW 2-Jun-21 Zirconium-95 -4.57E-01 2.15E+00 1.33E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 BETA 3.60E+00 2.42E+00 1.65E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Barium-140 1.84E+00 1.09E+01 6.37E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Cesium-134 9.55E-01 1.68E+00 1.03E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Cesium-137 -2.02E-01 1.41E+00 8.68E-01 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Cobalt-58 -1.89E-01 1.59E+00 9.95E-01 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Cobalt-60 -4.28E-01 1.41E+00 9.06E-01 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Iodine-131 -2.09E-01 9.96E-01 6.10E-01 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Iron-55 -1.97E+01 7.39E+01 4.79E+01 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Iron-59 1.53E+00 3.56E+00 2.06E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Lanthanum-140 -1.07E+00 3.66E+00 2.37E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Manganese-54 1.07E+00 1.63E+00 1.06E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Nickel-63 -4.77E+00 2.60E+01 1.52E+01 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Niobium-95 8.64E-01 1.69E+00 1.04E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Total Strontium 3.90E-01 1.64E+00 1.03E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Tritium 1.33E+01 2.71E+02 1.62E+02 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Zinc-65 -5.53E-01 3.06E+00 2.11E+00 pCi/L 5S2 Diablo Creek Weir(550638005) - DW 26-Jul-21 Zirconium-95 -4.21E-01 2.72E+00 1.71E+00 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 BETA 2.45E+00 3.02E+00 1.91E+00 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Barium-140 2.64E+00 8.50E+00 7.37E+00 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Cesium-134 3.26E-01 1.63E+00 9.76E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Cesium-137 2.00E-01 1.63E+00 9.72E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Cobalt-58 -7.16E-01 1.43E+00 9.95E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Cobalt-60 6.32E-01 1.55E+00 8.89E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Iodine-131 -1.34E-01 7.10E-01 4.42E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Iron-55 1.58E+01 4.70E+01 3.16E+01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Iron-59 3.37E-01 3.21E+00 1.84E+00 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Lanthanum-140 -9.87E-02 2.95E+00 1.78E+00 pCi/L 166

Drinking Water Sample Results 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Manganese-54 8.01E-02 1.37E+00 9.32E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Nickel-63 -5.50E+00 2.82E+01 1.65E+01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Niobium-95 -1.60E-02 1.47E+00 8.95E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Total Strontium 2.70E-01 1.39E+00 8.51E-01 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Tritium -2.00E+02 2.71E+02 1.52E+02 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Zinc-65 4.64E-02 3.05E+00 1.77E+00 pCi/L 5S2 Diablo Creek Weir(552194001) - DW 11-Aug-21 Zirconium-95 -9.94E-01 2.60E+00 1.73E+00 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 BETA 3.08E+00 1.80E+00 1.31E+00 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Barium-140 -1.44E+00 6.99E+00 4.41E+00 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Cesium-134 -6.83E-03 1.49E+00 8.70E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Cesium-137 1.28E-01 1.35E+00 8.24E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Cobalt-58 9.51E-02 1.35E+00 7.80E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Cobalt-60 6.01E-02 1.34E+00 8.01E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Iodine-131 6.41E-01 9.08E-01 5.92E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Iron-55 9.44E+00 5.89E+01 3.75E+01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Iron-59 1.81E+00 3.12E+00 1.90E+00 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Lanthanum-140 4.36E-01 2.55E+00 1.45E+00 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Manganese-54 -4.95E-01 1.14E+00 7.42E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Nickel-63 1.79E+01 2.32E+01 1.46E+01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Niobium-95 1.01E-01 1.37E+00 7.87E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Total Strontium 2.84E-01 1.48E+00 9.11E-01 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Tritium 2.39E+01 2.95E+02 1.77E+02 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Zinc-65 -8.61E-01 2.88E+00 1.83E+00 pCi/L 5S2 Diablo Creek Weir(555289001) - DW 9-Sep-21 Zirconium-95 -6.61E-01 2.33E+00 1.43E+00 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 BETA 3.19E+00 3.54E+00 2.25E+00 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Barium-140 4.42E+00 8.50E+00 5.20E+00 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Cesium-134 -6.75E-01 1.49E+00 1.02E+00 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Cesium-137 1.46E+00 1.46E+00 2.36E+00 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Cobalt-58 -3.29E-01 1.40E+00 9.05E-01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Cobalt-60 4.64E-01 1.43E+00 8.30E-01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Iodine-131 -6.47E-04 6.75E-01 3.94E-01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Iron-55 -8.82E-01 5.90E+01 4.18E+01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Iron-59 -4.54E-01 2.59E+00 1.58E+00 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Lanthanum-140 -5.06E-01 2.57E+00 1.64E+00 pCi/L 167

Drinking Water Sample Results 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Manganese-54 -1.55E-01 1.34E+00 8.42E-01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Nickel-63 -6.66E+00 1.99E+01 1.15E+01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Niobium-95 8.61E-01 1.53E+00 9.54E-01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Total Strontium -2.60E-02 8.44E-01 5.00E-01 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Tritium 4.22E+01 2.71E+02 1.63E+02 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Zinc-65 -1.38E-01 2.72E+00 1.74E+00 pCi/L 5S2 Diablo Creek Weir(558849001) - DW 12-Oct-21 Zirconium-95 8.26E-01 2.60E+00 1.57E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 BETA 6.21E+00 2.63E+00 2.04E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Barium-140 -2.76E-02 1.13E+01 6.75E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Cesium-134 6.09E-01 1.67E+00 1.02E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Cesium-137 7.16E-01 1.47E+00 2.14E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Cobalt-58 4.80E-01 1.51E+00 9.56E-01 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Cobalt-60 1.36E-01 1.50E+00 8.86E-01 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Iodine-131 -9.37E-02 9.33E-01 5.40E-01 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Iron-55 -5.48E+00 8.19E+01 6.09E+01 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Iron-59 3.82E-01 3.28E+00 1.90E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Lanthanum-140 -2.86E-01 3.14E+00 1.95E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Manganese-54 3.63E-01 1.42E+00 8.60E-01 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Nickel-63 -6.86E-01 1.80E+01 1.07E+01 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Niobium-95 1.43E+00 1.43E+00 1.36E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Total Strontium -8.07E-02 5.75E-01 3.34E-01 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Tritium 3.81E+01 2.89E+02 1.74E+02 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Zinc-65 -2.93E+00 2.52E+00 2.22E+00 pCi/L 5S2 Diablo Creek Weir(562130002) - DW 15-Nov-21 Zirconium-95 1.72E+00 2.79E+00 1.75E+00 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 BETA 5.79E+00 2.84E+00 2.08E+00 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Barium-140 1.13E+00 8.06E+00 4.74E+00 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Cesium-134 -9.17E-02 1.50E+00 1.04E+00 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Cesium-137 8.28E-01 1.47E+00 9.75E-01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Cobalt-58 -4.73E-01 1.31E+00 8.79E-01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Cobalt-60 2.16E-01 1.57E+00 9.06E-01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Iodine-131 -2.67E-01 7.76E-01 4.76E-01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Iron-55 -3.29E+00 7.15E+01 5.07E+01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Iron-59 5.11E-01 2.94E+00 1.68E+00 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Lanthanum-140 2.08E+00 3.40E+00 2.09E+00 pCi/L 168

Drinking Water Sample Results 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Manganese-54 -2.86E-01 1.25E+00 8.06E-01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Nickel-63 1.16E+01 2.64E+01 1.63E+01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Niobium-95 -8.65E-01 1.50E+00 1.34E+00 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Total Strontium -1.62E-01 1.11E+00 6.45E-01 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Tritium 5.81E+01 2.90E+02 1.76E+02 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Zinc-65 -7.62E-01 2.96E+00 1.83E+00 pCi/L 5S2 Diablo Creek Weir(564006001) - DW 6-Dec-21 Zirconium-95 -5.68E-01 2.47E+00 1.58E+00 pCi/L DW1 Drinking Water DW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DW1 Drinking Water(531666002) - DW 13-Jan-21 BETA 9.95E-01 1.23E+00 7.90E-01 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Barium-140 -4.25E+00 7.59E+00 5.11E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Cesium-134 -4.98E-01 1.79E+00 1.32E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Cesium-137 6.89E-01 2.01E+00 1.19E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Cobalt-58 -1.45E+00 1.56E+00 1.26E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Cobalt-60 -6.27E-01 1.68E+00 1.12E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Iodine-131 -3.24E-01 9.13E-01 5.66E-01 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Iron-55 3.35E+01 8.59E+01 5.58E+01 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Iron-59 2.63E-01 3.71E+00 2.16E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Lanthanum-140 6.59E-01 3.28E+00 1.94E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Manganese-54 3.58E-01 1.66E+00 1.12E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Nickel-63 -4.34E+00 4.13E+01 2.44E+01 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Niobium-95 -3.16E-01 1.85E+00 1.15E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Total Strontium -9.10E-02 1.34E+00 7.91E-01 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Tritium -6.65E+00 2.83E+02 1.68E+02 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Zinc-65 -1.56E-01 3.83E+00 2.62E+00 pCi/L DW1 Drinking Water(531666002) - DW 13-Jan-21 Zirconium-95 1.09E+00 3.16E+00 1.88E+00 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 BETA 3.20E-01 1.51E+00 9.17E-01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Barium-140 -1.61E+00 6.29E+00 3.97E+00 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Cesium-134 -2.65E-01 1.35E+00 8.66E-01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Cesium-137 1.49E-01 1.41E+00 8.54E-01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Cobalt-58 -3.29E-01 1.27E+00 8.28E-01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Cobalt-60 8.52E-03 1.41E+00 8.37E-01 pCi/L 169

Drinking Water Sample Results DW1 Drinking Water(533664002) - DW 2-Feb-21 Iodine-131 2.95E-01 6.71E-01 3.97E-01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Iron-55 9.33E+00 8.29E+01 5.50E+01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Iron-59 -4.14E-01 2.67E+00 1.61E+00 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Lanthanum-140 -6.84E-01 1.99E+00 1.32E+00 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Manganese-54 4.42E-01 1.29E+00 7.39E-01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Nickel-63 -8.28E+00 3.17E+01 1.86E+01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Niobium-95 7.28E-01 1.59E+00 1.64E+00 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Total Strontium 1.01E+00 1.01E+00 7.37E-01 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Tritium -6.53E+01 2.80E+02 1.64E+02 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Zinc-65 1.96E-01 2.58E+00 1.70E+00 pCi/L DW1 Drinking Water(533664002) - DW 2-Feb-21 Zirconium-95 -1.23E+00 2.12E+00 1.52E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 BETA 1.83E-02 1.27E+00 7.60E-01 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Barium-140 5.51E+00 1.36E+01 8.13E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Cesium-134 3.16E-01 1.85E+00 1.12E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Cesium-137 3.49E-01 1.91E+00 1.15E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Cobalt-58 -8.80E-01 1.83E+00 1.28E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Cobalt-60 4.00E-01 1.98E+00 1.16E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Iodine-131 -1.24E-01 7.65E-01 4.51E-01 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Iron-55 -4.95E+01 1.11E+02 8.21E+01 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Iron-59 3.78E-01 4.49E+00 2.63E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Lanthanum-140 5.84E-01 4.77E+00 2.85E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Manganese-54 -6.85E-01 1.57E+00 1.01E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Nickel-63 2.47E+01 2.49E+01 1.66E+01 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Niobium-95 -2.44E-01 1.96E+00 1.23E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Total Strontium -2.54E-01 9.28E-01 5.31E-01 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Tritium 9.79E+01 2.27E+02 1.41E+02 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Zinc-65 -6.67E-01 3.26E+00 2.02E+00 pCi/L DW1 Drinking Water(535385002) - DW 2-Mar-21 Zirconium-95 7.74E-02 3.38E+00 2.07E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 BETA 8.35E-01 1.30E+00 8.15E-01 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Barium-140 5.43E+00 1.06E+01 9.01E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Cesium-134 2.69E-01 1.58E+00 9.57E-01 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Cesium-137 6.22E-01 1.37E+00 1.83E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Cobalt-58 -2.89E-01 1.49E+00 9.53E-01 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Cobalt-60 3.39E-02 1.60E+00 1.22E+00 pCi/L 170

Drinking Water Sample Results DW1 Drinking Water(540195004) - DW 14-Apr-21 Iodine-131 1.80E-02 5.54E-01 3.29E-01 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Iron-55 -3.00E+00 6.53E+01 4.60E+01 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Iron-59 -1.10E+00 3.18E+00 2.66E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Lanthanum-140 -8.12E-01 3.03E+00 1.98E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Manganese-54 6.44E-01 1.48E+00 1.16E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Nickel-63 2.21E+01 2.35E+01 1.58E+01 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Niobium-95 -4.40E-01 1.45E+00 1.45E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Total Strontium 3.92E-01 1.37E+00 8.46E-01 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Tritium 1.30E+02 2.48E+02 1.56E+02 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Zinc-65 1.36E-01 3.05E+00 1.78E+00 pCi/L DW1 Drinking Water(540195004) - DW 14-Apr-21 Zirconium-95 1.29E+00 2.87E+00 1.75E+00 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 BETA 1.02E+00 1.93E+00 1.19E+00 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Barium-140 3.99E+00 6.63E+00 5.15E+00 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Cesium-134 7.35E-01 1.48E+00 8.82E-01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Cesium-137 -5.73E-01 1.31E+00 8.63E-01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Cobalt-58 5.35E-02 1.31E+00 7.79E-01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Cobalt-60 5.04E-01 1.60E+00 1.00E+00 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Iodine-131 -1.35E-01 4.77E-01 2.90E-01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Iron-55 2.29E+01 1.21E+02 9.07E+01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Iron-59 1.85E-01 2.65E+00 1.60E+00 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Lanthanum-140 6.73E-01 2.29E+00 1.30E+00 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Manganese-54 5.74E-01 1.38E+00 8.16E-01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Nickel-63 7.64E+00 2.36E+01 1.46E+01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Niobium-95 4.13E-01 1.52E+00 8.91E-01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Total Strontium 8.78E-01 1.33E+00 8.82E-01 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Tritium 3.85E+00 3.37E+02 2.01E+02 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Zinc-65 -4.36E-02 2.51E+00 1.74E+00 pCi/L DW1 Drinking Water(542717001) - DW 4-May-21 Zirconium-95 5.70E-01 2.52E+00 1.48E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 BETA -8.56E-01 2.03E+00 1.19E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Barium-140 9.75E-01 8.91E+00 5.21E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Cesium-134 -3.47E-01 2.00E+00 1.20E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Cesium-137 9.13E-01 1.83E+00 1.12E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Cobalt-58 3.70E-01 1.92E+00 1.11E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Cobalt-60 -5.78E-01 2.01E+00 1.27E+00 pCi/L 171

Drinking Water Sample Results DW1 Drinking Water(545965001) - DW 2-Jun-21 Iodine-131 2.31E-01 8.70E-01 5.91E-01 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Iron-55 -4.81E+01 9.75E+01 6.55E+01 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Iron-59 1.93E+00 4.26E+00 2.57E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Lanthanum-140 -7.86E-02 3.42E+00 2.07E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Manganese-54 1.03E+00 1.99E+00 1.19E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Nickel-63 5.52E+00 4.66E+01 2.80E+01 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Niobium-95 4.95E-01 1.95E+00 1.12E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Total Strontium 7.75E-02 1.51E+00 9.09E-01 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Tritium 1.78E+01 2.45E+02 1.47E+02 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Zinc-65 -2.30E+00 3.57E+00 2.61E+00 pCi/L DW1 Drinking Water(545965001) - DW 2-Jun-21 Zirconium-95 1.61E-02 3.35E+00 1.94E+00 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 BETA -9.95E-01 1.55E+00 8.95E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Barium-140 4.39E+00 9.88E+00 5.79E+00 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Cesium-134 4.35E-01 1.66E+00 9.79E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Cesium-137 1.49E-02 1.42E+00 8.34E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Cobalt-58 -2.79E-01 1.30E+00 8.17E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Cobalt-60 7.81E-02 1.53E+00 8.81E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Iodine-131 3.09E-01 9.19E-01 5.32E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Iron-55 -9.88E+00 7.16E+01 4.63E+01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Iron-59 -1.52E+00 3.35E+00 2.71E+00 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Lanthanum-140 -9.60E-01 3.04E+00 1.97E+00 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Manganese-54 -4.16E-02 1.36E+00 8.20E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Nickel-63 2.94E-01 2.52E+01 1.50E+01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Niobium-95 2.43E-01 1.52E+00 8.95E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Total Strontium 3.51E-01 1.53E+00 9.58E-01 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Tritium 4.86E+01 2.71E+02 1.65E+02 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Zinc-65 3.47E-01 2.89E+00 1.74E+00 pCi/L DW1 Drinking Water(550638004) - DW 26-Jul-21 Zirconium-95 1.19E-01 2.50E+00 1.48E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 BETA 7.92E-01 1.72E+00 1.06E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Barium-140 -1.44E+00 7.51E+00 4.69E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Cesium-134 6.31E-02 1.58E+00 1.43E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Cesium-137 -2.63E-01 1.43E+00 9.13E-01 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Cobalt-58 9.08E-01 1.55E+00 9.33E-01 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Cobalt-60 -2.62E-01 1.39E+00 8.86E-01 pCi/L 172

Drinking Water Sample Results DW1 Drinking Water(552194002) - DW 11-Aug-21 Iodine-131 -4.96E-02 6.04E-01 3.63E-01 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Iron-55 -1.89E+01 4.98E+01 3.18E+01 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Iron-59 -3.27E-01 3.02E+00 1.85E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Lanthanum-140 3.29E-01 2.91E+00 1.68E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Manganese-54 -4.89E-01 1.31E+00 8.31E-01 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Nickel-63 -7.67E+00 2.85E+01 1.66E+01 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Niobium-95 5.96E-01 1.57E+00 9.15E-01 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Total Strontium 1.11E+00 1.52E+00 1.01E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Tritium -1.07E+02 2.66E+02 1.54E+02 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Zinc-65 1.66E+00 2.99E+00 1.97E+00 pCi/L DW1 Drinking Water(552194002) - DW 11-Aug-21 Zirconium-95 -9.27E-01 2.40E+00 1.52E+00 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 BETA -2.41E-01 1.52E+00 8.96E-01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Barium-140 1.41E+00 7.56E+00 4.37E+00 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Cesium-134 1.62E-01 1.63E+00 9.65E-01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Cesium-137 1.36E+00 1.63E+00 1.08E+00 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Cobalt-58 -4.17E-01 1.40E+00 8.87E-01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Cobalt-60 -1.90E-01 1.49E+00 8.92E-01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Iodine-131 3.22E-01 6.61E-01 4.03E-01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Iron-55 1.64E+01 6.01E+01 3.85E+01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Iron-59 -1.94E+00 3.00E+00 3.14E+00 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Lanthanum-140 3.03E-01 2.55E+00 1.49E+00 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Manganese-54 9.63E-02 1.37E+00 9.29E-01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Nickel-63 8.32E+00 2.35E+01 1.43E+01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Niobium-95 3.64E-01 1.48E+00 8.75E-01 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Total Strontium 1.00E+00 1.58E+00 1.04E+00 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Tritium 6.81E+01 2.95E+02 1.80E+02 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Zinc-65 -8.83E-01 2.84E+00 2.14E+00 pCi/L DW1 Drinking Water(555289002) - DW 9-Sep-21 Zirconium-95 -6.36E-05 2.58E+00 1.54E+00 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 BETA 7.63E-01 1.01E+00 6.52E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Barium-140 -2.06E+00 7.89E+00 5.01E+00 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Cesium-134 4.29E-01 1.62E+00 9.61E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Cesium-137 4.21E-01 1.56E+00 9.50E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Cobalt-58 -6.09E-01 1.46E+00 9.36E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Cobalt-60 8.76E-02 1.57E+00 9.48E-01 pCi/L 173

Drinking Water Sample Results DW1 Drinking Water(558849002) - DW 12-Oct-21 Iodine-131 -3.72E-02 5.06E-01 3.04E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Iron-55 3.65E+00 6.05E+01 4.33E+01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Iron-59 -2.83E-01 3.01E+00 1.83E+00 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Lanthanum-140 1.60E+00 2.92E+00 1.71E+00 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Manganese-54 -3.17E-02 1.42E+00 8.30E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Nickel-63 6.05E+00 2.00E+01 1.23E+01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Niobium-95 2.62E-01 1.53E+00 8.75E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Total Strontium -2.71E-01 1.12E+00 6.36E-01 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Tritium 1.03E+01 2.66E+02 1.59E+02 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Zinc-65 1.51E+00 3.41E+00 2.04E+00 pCi/L DW1 Drinking Water(558849002) - DW 12-Oct-21 Zirconium-95 1.05E+00 2.85E+00 1.65E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 BETA 5.11E-01 1.48E+00 9.04E-01 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Barium-140 7.88E+00 1.40E+01 8.68E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Cesium-134 8.46E-01 1.81E+00 1.11E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Cesium-137 -3.15E-01 1.60E+00 9.89E-01 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Cobalt-58 1.12E-02 1.77E+00 1.08E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Cobalt-60 4.32E-01 1.67E+00 1.08E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Iodine-131 -2.82E-01 9.47E-01 5.75E-01 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Iron-55 -5.26E-01 7.99E+01 5.96E+01 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Iron-59 9.95E-01 3.50E+00 2.00E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Lanthanum-140 -6.29E-01 3.82E+00 2.38E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Manganese-54 8.23E-01 1.71E+00 1.06E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Nickel-63 4.18E+00 1.71E+01 1.03E+01 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Niobium-95 -2.54E+00 1.78E+00 2.40E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Total Strontium 6.03E-01 1.42E+00 9.08E-01 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Tritium 1.16E+02 2.95E+02 1.83E+02 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Zinc-65 9.34E-02 2.90E+00 1.68E+00 pCi/L DW1 Drinking Water(562130003) - DW 15-Nov-21 Zirconium-95 -1.78E+00 2.90E+00 2.06E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 BETA 1.10E+00 1.69E+00 1.05E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Barium-140 -1.72E+00 9.21E+00 5.85E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Cesium-134 -1.20E-01 1.87E+00 1.15E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Cesium-137 1.39E-01 1.72E+00 1.07E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Cobalt-58 -3.19E-01 1.77E+00 1.23E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Cobalt-60 6.08E-01 1.92E+00 1.10E+00 pCi/L 174

Drinking Water Sample Results DW1 Drinking Water(564006002) - DW 6-Dec-21 Iodine-131 -1.31E-01 7.85E-01 4.59E-01 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Iron-55 1.59E+01 7.17E+01 5.14E+01 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Iron-59 2.23E+00 3.86E+00 2.36E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Lanthanum-140 9.13E-02 2.90E+00 1.81E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Manganese-54 -7.46E-01 1.49E+00 1.00E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Nickel-63 1.29E+01 2.99E+01 1.85E+01 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Niobium-95 6.15E-02 1.83E+00 1.07E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Total Strontium 1.02E+00 1.03E+00 7.24E-01 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Tritium -1.16E+02 2.85E+02 1.64E+02 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Zinc-65 -4.49E-01 3.09E+00 1.93E+00 pCi/L DW1 Drinking Water(564006002) - DW 6-Dec-21 Zirconium-95 -1.29E+00 2.84E+00 1.87E+00 pCi/L OEL Offsite Emergency Lab DW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 BETA 2.08E+00 1.56E+00 1.06E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Barium-140 1.40E+00 7.44E+00 4.95E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Cesium-134 7.49E-01 1.95E+00 1.13E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Cesium-137 -3.47E-01 1.51E+00 9.65E-01 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Cobalt-58 -5.02E-01 1.36E+00 9.73E-01 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Cobalt-60 4.42E-01 1.67E+00 9.76E-01 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Iodine-131 -4.64E-01 8.91E-01 5.75E-01 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Iron-55 5.07E+01 9.63E+01 6.31E+01 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Iron-59 1.47E+00 3.42E+00 2.01E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Lanthanum-140 -5.15E-01 2.61E+00 1.66E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Manganese-54 -9.45E-01 1.38E+00 9.71E-01 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Nickel-63 4.88E+00 3.63E+01 2.18E+01 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Niobium-95 -1.01E+00 1.63E+00 1.92E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Total Strontium 1.40E+00 1.42E+00 1.02E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Tritium 6.85E+01 2.85E+02 1.74E+02 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Zinc-65 2.19E+00 3.47E+00 2.11E+00 pCi/L OEL Offsite Emergency Lab(531666001) - DW 13-Jan-21 Zirconium-95 -5.88E-02 2.58E+00 1.60E+00 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 BETA 2.11E+00 2.16E+00 1.38E+00 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Barium-140 4.54E+00 7.25E+00 4.44E+00 pCi/L 175

Drinking Water Sample Results OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Cesium-134 7.98E-02 1.49E+00 8.81E-01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Cesium-137 -9.66E-01 1.46E+00 1.37E+00 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Cobalt-58 -7.15E-01 1.15E+00 8.28E-01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Cobalt-60 7.41E-01 1.56E+00 8.92E-01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Iodine-131 -2.75E-01 6.85E-01 4.30E-01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Iron-55 -3.51E+01 8.92E+01 5.66E+01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Iron-59 2.11E-01 2.84E+00 1.72E+00 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Lanthanum-140 -5.95E-01 2.16E+00 1.58E+00 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Manganese-54 5.67E-01 1.40E+00 8.29E-01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Nickel-63 1.10E+01 4.00E+01 2.42E+01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Niobium-95 2.55E-01 1.35E+00 7.93E-01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Total Strontium -1.03E+00 1.33E+00 7.18E-01 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Tritium -3.33E+01 2.77E+02 1.63E+02 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Zinc-65 -1.08E+00 2.52E+00 1.75E+00 pCi/L OEL Offsite Emergency Lab(533664001) - DW 2-Feb-21 Zirconium-95 -4.95E-01 2.18E+00 1.37E+00 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 BETA 2.20E+00 9.75E-01 7.79E-01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Barium-140 3.21E+00 1.08E+01 6.36E+00 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Cesium-134 8.17E-01 1.58E+00 9.74E-01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Cesium-137 1.43E+00 1.43E+00 2.18E+00 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Cobalt-58 -5.94E-01 1.32E+00 9.11E-01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Cobalt-60 2.89E-01 1.64E+00 9.61E-01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Iodine-131 -3.32E-02 8.09E-01 4.67E-01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Iron-55 -7.90E+01 1.13E+02 8.27E+01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Iron-59 -3.15E-02 3.02E+00 1.78E+00 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Lanthanum-140 -1.32E+00 3.31E+00 2.25E+00 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Manganese-54 -2.80E-02 1.36E+00 8.40E-01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Nickel-63 2.62E-01 2.44E+01 1.45E+01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Niobium-95 6.28E-01 1.51E+00 1.01E+00 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Total Strontium -1.53E-01 7.50E-01 4.31E-01 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Tritium 4.41E+01 2.08E+02 1.26E+02 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Zinc-65 1.99E+00 2.70E+00 2.26E+00 pCi/L OEL Offsite Emergency Lab(535385003) - DW 2-Mar-21 Zirconium-95 3.10E-01 2.75E+00 1.66E+00 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 BETA 2.73E+00 1.53E+00 1.09E+00 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Barium-140 -7.51E-02 1.02E+01 6.04E+00 pCi/L 176

Drinking Water Sample Results OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Cesium-134 8.57E-01 1.80E+00 1.10E+00 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Cesium-137 9.38E-01 1.34E+00 8.80E-01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Cobalt-58 7.03E-01 1.58E+00 9.54E-01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Cobalt-60 7.67E-01 1.67E+00 9.70E-01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Iodine-131 7.60E-02 6.09E-01 3.50E-01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Iron-55 2.74E+00 6.46E+01 4.56E+01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Iron-59 -2.63E-02 3.39E+00 1.97E+00 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Lanthanum-140 2.09E+00 3.82E+00 5.06E+00 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Manganese-54 2.61E-01 1.43E+00 8.59E-01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Nickel-63 1.41E+01 2.44E+01 1.56E+01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Niobium-95 -8.86E-03 1.63E+00 9.94E-01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Total Strontium 4.11E-01 6.18E-01 4.29E-01 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Tritium 2.90E+01 2.77E+02 1.66E+02 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Zinc-65 1.30E+00 3.51E+00 2.02E+00 pCi/L OEL Offsite Emergency Lab(540195001) - DW 14-Apr-21 Zirconium-95 6.93E-01 2.82E+00 1.68E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 BETA 2.01E+00 1.41E+00 9.70E-01 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Barium-140 -1.33E+00 9.49E+00 5.86E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Cesium-134 -1.53E-01 2.67E+00 2.18E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Cesium-137 -8.46E-01 2.07E+00 1.39E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Cobalt-58 -2.25E-01 2.13E+00 1.25E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Cobalt-60 -1.39E-01 2.43E+00 1.47E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Iodine-131 -2.62E-02 4.25E-01 2.47E-01 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Iron-55 -1.34E+01 1.14E+02 8.41E+01 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Iron-59 2.59E+00 5.18E+00 3.10E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Lanthanum-140 -1.51E-01 3.23E+00 2.27E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Manganese-54 6.14E-01 2.17E+00 1.25E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Nickel-63 2.66E+01 2.96E+01 1.93E+01 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Niobium-95 7.66E-01 2.39E+00 1.37E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Total Strontium 8.70E-01 1.47E+00 9.67E-01 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Tritium -9.40E+01 3.34E+02 1.94E+02 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Zinc-65 -9.54E-02 4.63E+00 2.74E+00 pCi/L OEL Offsite Emergency Lab(542717003) - DW 4-May-21 Zirconium-95 -1.07E+00 3.56E+00 2.35E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 BETA 1.57E+00 1.26E+00 8.44E-01 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Barium-140 6.57E+00 8.93E+00 8.45E+00 pCi/L 177

Drinking Water Sample Results OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Cesium-134 7.63E-01 2.17E+00 1.26E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Cesium-137 -3.38E-01 1.83E+00 1.18E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Cobalt-58 -6.47E-01 1.69E+00 1.08E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Cobalt-60 -9.40E-03 1.92E+00 1.13E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Iodine-131 3.26E-01 9.61E-01 5.85E-01 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Iron-55 -5.63E+01 1.07E+02 7.21E+01 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Iron-59 3.77E+00 4.06E+00 3.66E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Lanthanum-140 -2.23E-01 3.32E+00 2.03E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Manganese-54 -6.02E-01 1.79E+00 1.30E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Nickel-63 -1.05E+01 3.61E+01 2.11E+01 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Niobium-95 -2.64E-01 1.89E+00 1.12E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Total Strontium 1.54E-01 1.37E+00 8.32E-01 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Tritium 7.13E+01 2.47E+02 1.51E+02 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Zinc-65 7.92E-01 4.19E+00 2.87E+00 pCi/L OEL Offsite Emergency Lab(545965004) - DW 2-Jun-21 Zirconium-95 -7.88E-01 3.38E+00 2.05E+00 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 BETA 1.48E+00 1.42E+00 9.25E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Barium-140 4.44E+00 1.05E+01 8.72E+00 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Cesium-134 4.68E-01 1.69E+00 1.00E+00 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Cesium-137 3.43E-01 1.53E+00 8.95E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Cobalt-58 1.34E-01 1.62E+00 9.61E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Cobalt-60 -3.99E-01 1.51E+00 9.36E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Iodine-131 5.29E-02 8.35E-01 4.79E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Iron-55 -4.87E+00 7.56E+01 4.94E+01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Iron-59 -6.15E-01 3.38E+00 2.13E+00 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Lanthanum-140 5.51E-03 3.82E+00 2.27E+00 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Manganese-54 -1.56E-01 1.49E+00 9.04E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Nickel-63 -4.43E+00 2.61E+01 1.53E+01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Niobium-95 -4.07E-01 1.59E+00 9.93E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Total Strontium -4.10E-01 1.72E+00 9.80E-01 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Tritium 1.02E+02 2.67E+02 1.66E+02 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Zinc-65 -1.54E+00 2.91E+00 2.04E+00 pCi/L OEL Offsite Emergency Lab(550638001) - DW 26-Jul-21 Zirconium-95 1.28E+00 3.00E+00 1.80E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 BETA 1.96E+00 1.74E+00 1.14E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Barium-140 1.86E-02 1.04E+01 6.29E+00 pCi/L 178

Drinking Water Sample Results OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Cesium-134 5.43E-01 2.44E+00 1.39E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Cesium-137 2.34E-01 2.20E+00 1.33E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Cobalt-58 4.71E-02 2.08E+00 1.20E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Cobalt-60 7.87E-01 2.46E+00 1.44E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Iodine-131 1.14E-01 5.67E-01 3.26E-01 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Iron-55 1.24E+00 4.86E+01 3.18E+01 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Iron-59 -5.16E-01 4.81E+00 2.89E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Lanthanum-140 -1.00E+00 3.83E+00 2.87E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Manganese-54 -3.51E-01 1.93E+00 1.16E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Nickel-63 1.22E+01 2.94E+01 1.82E+01 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Niobium-95 -1.26E+00 2.00E+00 1.37E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Total Strontium 7.49E-01 1.38E+00 9.11E-01 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Tritium -1.07E+02 2.62E+02 1.51E+02 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Zinc-65 -1.59E+00 4.34E+00 2.81E+00 pCi/L OEL Offsite Emergency Lab(552194003) - DW 11-Aug-21 Zirconium-95 1.06E+00 3.97E+00 2.42E+00 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 BETA 1.40E+00 1.01E+00 7.03E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Barium-140 9.01E-01 6.77E+00 3.97E+00 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Cesium-134 -4.49E-02 1.38E+00 8.47E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Cesium-137 1.24E-01 1.47E+00 8.76E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Cobalt-58 7.87E-01 7.87E-01 9.34E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Cobalt-60 3.13E-01 1.30E+00 7.47E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Iodine-131 -1.51E-01 6.27E-01 3.77E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Iron-55 -6.70E+00 6.00E+01 3.76E+01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Iron-59 -1.25E+00 2.79E+00 2.07E+00 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Lanthanum-140 1.46E-01 2.54E+00 1.51E+00 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Manganese-54 -2.76E-01 1.33E+00 8.43E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Nickel-63 6.72E+00 2.31E+01 1.40E+01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Niobium-95 -1.13E+00 1.45E+00 1.42E+00 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Total Strontium -3.03E-01 1.19E+00 6.79E-01 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Tritium -9.31E+01 2.94E+02 1.70E+02 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Zinc-65 2.69E-01 2.83E+00 1.63E+00 pCi/L OEL Offsite Emergency Lab(555289003) - DW 9-Sep-21 Zirconium-95 1.49E-01 2.42E+00 1.46E+00 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 BETA 1.12E+00 1.43E+00 9.08E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Barium-140 6.21E+00 8.24E+00 5.83E+00 pCi/L 179

Drinking Water Sample Results OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Cesium-134 -1.29E-01 1.46E+00 8.91E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Cesium-137 2.27E-01 1.41E+00 8.28E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Cobalt-58 -4.65E-01 1.23E+00 8.09E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Cobalt-60 1.03E+00 1.50E+00 9.14E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Iodine-131 -8.20E-02 6.15E-01 3.82E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Iron-55 6.38E+00 6.06E+01 4.32E+01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Iron-59 2.21E-01 2.82E+00 1.72E+00 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Lanthanum-140 6.62E-02 2.74E+00 1.61E+00 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Manganese-54 3.84E-01 1.32E+00 7.88E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Nickel-63 -6.97E+00 2.03E+01 1.17E+01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Niobium-95 4.81E-01 1.44E+00 8.58E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Total Strontium 1.71E-01 1.23E+00 7.49E-01 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Tritium 3.91E+01 2.86E+02 1.73E+02 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Zinc-65 1.22E+00 2.92E+00 1.85E+00 pCi/L OEL Offsite Emergency Lab(558849003) - DW 12-Oct-21 Zirconium-95 -4.04E-01 2.21E+00 1.37E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 BETA 1.25E+00 1.11E+00 7.50E-01 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Barium-140 3.20E+00 1.37E+01 9.32E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Cesium-134 5.37E-01 1.96E+00 1.15E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Cesium-137 2.05E-01 1.82E+00 1.05E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Cobalt-58 -9.67E-01 1.74E+00 1.19E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Cobalt-60 2.93E-01 1.88E+00 1.07E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Iodine-131 2.95E-01 9.87E-01 6.06E-01 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Iron-55 1.47E+01 8.59E+01 6.45E+01 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Iron-59 1.64E+00 4.29E+00 2.56E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Lanthanum-140 -3.78E+00 4.31E+00 6.53E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Manganese-54 -3.95E-01 1.59E+00 9.92E-01 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Nickel-63 -4.21E+00 1.79E+01 1.05E+01 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Niobium-95 -2.40E+00 1.71E+00 2.34E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Total Strontium 9.29E-01 1.44E+00 9.91E-01 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Tritium 8.42E+01 3.01E+02 1.84E+02 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Zinc-65 1.80E-01 3.49E+00 2.40E+00 pCi/L OEL Offsite Emergency Lab(562130001) - DW 15-Nov-21 Zirconium-95 -9.91E-01 3.26E+00 2.04E+00 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 BETA 1.41E+00 1.48E+00 9.52E-01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Barium-140 2.26E+00 7.67E+00 4.60E+00 pCi/L 180

Drinking Water Sample Results OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Cesium-134 -5.44E-01 1.68E+00 1.54E+00 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Cesium-137 -1.09E-01 1.44E+00 8.95E-01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Cobalt-58 -8.31E-01 1.41E+00 9.62E-01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Cobalt-60 3.91E-02 1.40E+00 9.70E-01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Iodine-131 -8.88E-03 7.70E-01 4.45E-01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Iron-55 1.78E+00 7.16E+01 5.08E+01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Iron-59 -3.58E-01 3.12E+00 1.91E+00 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Lanthanum-140 -3.03E-01 2.74E+00 1.64E+00 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Manganese-54 -5.80E-01 1.28E+00 8.38E-01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Nickel-63 1.20E+01 3.28E+01 2.01E+01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Niobium-95 -2.75E-01 1.56E+00 1.06E+00 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Total Strontium 2.04E-01 8.19E-01 5.05E-01 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Tritium -2.66E+01 2.97E+02 1.75E+02 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Zinc-65 -2.09E+00 2.76E+00 2.09E+00 pCi/L OEL Offsite Emergency Lab(564006003) - DW 6-Dec-21 Zirconium-95 2.17E+00 2.78E+00 3.24E+00 pCi/L WN2 Diablo Creek Outlet DW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 BETA 7.56E-01 2.38E+00 1.45E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Barium-140 1.92E+00 6.80E+00 4.00E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Cesium-134 2.98E-01 1.70E+00 1.07E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Cesium-137 -8.82E-02 1.43E+00 8.71E-01 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Cobalt-58 2.22E-01 1.27E+00 8.45E-01 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Cobalt-60 -2.93E-01 1.64E+00 1.01E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Iodine-131 1.10E-01 7.90E-01 4.53E-01 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Iron-55 5.08E+01 1.01E+02 6.58E+01 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Iron-59 6.45E-03 2.86E+00 1.88E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Lanthanum-140 -1.17E+00 2.14E+00 1.53E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Manganese-54 2.38E-01 1.43E+00 8.57E-01 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Nickel-63 -1.15E+01 4.44E+01 2.60E+01 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Niobium-95 -1.11E+00 1.40E+00 1.52E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Total Strontium -4.25E-01 1.42E+00 8.11E-01 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Tritium -3.02E+01 2.93E+02 1.73E+02 pCi/L 181

Drinking Water Sample Results WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Zinc-65 3.03E+00 3.06E+00 3.25E+00 pCi/L WN2 Diablo Creek Outlet(531666006) - DW 13-Jan-21 Zirconium-95 2.34E-01 2.61E+00 1.57E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 BETA 3.03E+00 2.03E+00 1.41E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Barium-140 7.08E-01 1.16E+01 6.80E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Cesium-134 7.13E-01 1.74E+00 1.16E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Cesium-137 -8.58E-02 1.56E+00 9.44E-01 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Cobalt-58 -3.11E-01 1.61E+00 1.02E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Cobalt-60 1.33E-01 1.55E+00 9.03E-01 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Iodine-131 3.53E-01 6.65E-01 4.17E-01 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Iron-55 -3.05E+01 6.81E+01 4.72E+01 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Iron-59 -1.82E-01 3.38E+00 1.98E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Lanthanum-140 -9.76E-01 3.19E+00 2.08E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Manganese-54 -2.91E-01 1.63E+00 1.03E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Nickel-63 2.04E+00 2.27E+01 1.37E+01 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Niobium-95 6.60E-01 1.82E+00 1.10E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Total Strontium 1.12E-01 5.95E-01 3.69E-01 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Tritium 1.83E+02 2.49E+02 1.62E+02 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Zinc-65 -4.82E-02 2.74E+00 1.82E+00 pCi/L WN2 Diablo Creek Outlet(540195007) - DW 14-Apr-21 Zirconium-95 9.22E-02 2.80E+00 1.69E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 BETA 1.70E+00 2.44E+00 1.54E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Barium-140 -1.65E+00 9.96E+00 6.08E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Cesium-134 7.15E-01 1.70E+00 1.02E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Cesium-137 -4.46E-01 1.55E+00 9.89E-01 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Cobalt-58 9.01E-01 1.73E+00 1.06E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Cobalt-60 6.28E-01 1.76E+00 1.01E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Iodine-131 8.49E-02 1.01E+00 6.06E-01 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Iron-55 -3.58E+01 1.02E+02 6.30E+01 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Iron-59 2.18E-01 3.73E+00 2.15E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Lanthanum-140 -1.34E+00 3.14E+00 2.14E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Manganese-54 9.69E-01 1.66E+00 1.03E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Nickel-63 2.62E+00 3.39E+01 2.03E+01 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Niobium-95 -4.52E-01 1.58E+00 1.02E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Total Strontium 3.77E-02 6.27E-01 3.77E-01 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Tritium 4.27E+01 3.11E+02 1.87E+02 pCi/L 182

Drinking Water Sample Results WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Zinc-65 -2.03E-01 3.64E+00 2.14E+00 pCi/L WN2 Diablo Creek Outlet(554636001) - DW 2-Sep-21 Zirconium-95 -7.65E-01 2.50E+00 1.64E+00 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 BETA 1.93E+00 1.96E+00 1.29E+00 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Barium-140 -7.52E-01 8.64E+00 5.11E+00 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Cesium-134 -5.32E-01 1.36E+00 9.01E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Cesium-137 -5.29E-01 1.19E+00 7.87E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Cobalt-58 -2.01E-02 1.27E+00 7.70E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Cobalt-60 4.86E-01 1.36E+00 7.76E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Iodine-131 -2.15E-01 9.06E-01 5.44E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Iron-55 2.95E+01 1.11E+02 8.28E+01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Iron-59 -1.99E+00 2.76E+00 2.13E+00 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Lanthanum-140 1.32E-01 3.47E+00 2.04E+00 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Manganese-54 4.75E-01 1.42E+00 8.45E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Nickel-63 1.52E+01 3.22E+01 1.99E+01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Niobium-95 -3.52E-01 1.41E+00 8.88E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Total Strontium 3.60E-01 8.07E-01 5.27E-01 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Tritium 9.93E+01 2.86E+02 1.77E+02 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Zinc-65 -6.65E-01 2.38E+00 1.52E+00 pCi/L WN2 Diablo Creek Outlet(559948008) - DW 16-Nov-21 Zirconium-95 2.16E-01 2.59E+00 1.54E+00 pCi/L WW2 Water Well 02 DW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units WW2 Water Well 02(531666005) - DW 13-Jan-21 BETA 3.10E+00 2.33E+00 1.59E+00 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Barium-140 -1.47E+00 6.33E+00 3.82E+00 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Cesium-134 -1.20E-01 1.35E+00 8.13E-01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Cesium-137 -1.98E-01 1.34E+00 9.04E-01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Cobalt-58 -7.87E-02 1.19E+00 8.05E-01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Cobalt-60 4.21E-02 1.45E+00 8.93E-01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Iodine-131 3.76E-01 8.87E-01 5.37E-01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Iron-55 2.76E+01 7.70E+01 5.23E+01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Iron-59 1.51E-01 2.88E+00 1.74E+00 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Lanthanum-140 -1.38E-01 2.45E+00 1.64E+00 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Manganese-54 -2.37E-02 1.37E+00 8.20E-01 pCi/L 183

Drinking Water Sample Results WW2 Water Well 02(531666005) - DW 13-Jan-21 Nickel-63 1.22E+01 3.87E+01 2.36E+01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Niobium-95 6.59E-01 1.43E+00 9.30E-01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Total Strontium -2.85E-01 1.31E+00 7.57E-01 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Tritium -6.83E+01 2.89E+02 1.69E+02 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Zinc-65 -2.68E-01 2.82E+00 1.97E+00 pCi/L WW2 Water Well 02(531666005) - DW 13-Jan-21 Zirconium-95 3.49E-01 2.49E+00 1.46E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 BETA 5.96E+00 3.32E+00 2.36E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Barium-140 -1.80E+00 1.07E+01 6.66E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Cesium-134 1.05E-01 1.68E+00 9.70E-01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Cesium-137 1.34E+00 1.34E+00 1.60E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Cobalt-58 2.10E-02 1.61E+00 9.36E-01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Cobalt-60 -4.00E-01 1.53E+00 9.94E-01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Iodine-131 -2.22E-01 6.07E-01 3.95E-01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Iron-55 -2.60E+01 6.70E+01 4.66E+01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Iron-59 1.41E-02 3.28E+00 2.24E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Lanthanum-140 7.40E-01 4.03E+00 2.31E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Manganese-54 1.16E+00 1.40E+00 1.84E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Nickel-63 1.23E+01 2.34E+01 1.48E+01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Niobium-95 2.15E-01 1.68E+00 9.68E-01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Total Strontium 4.65E-01 1.16E+00 7.39E-01 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Tritium 2.56E+02 2.66E+02 1.78E+02 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Zinc-65 4.58E-01 2.96E+00 1.98E+00 pCi/L WW2 Water Well 02(540195006) - DW 14-Apr-21 Zirconium-95 9.58E-01 2.88E+00 1.66E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Barium-140 -6.55E+00 1.15E+01 8.09E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Cesium-134 -1.79E+00 1.96E+00 1.83E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Cesium-137 -5.88E-01 1.90E+00 1.17E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Cobalt-58 8.50E-02 1.96E+00 1.15E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Cobalt-60 5.59E-01 2.14E+00 1.23E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Iodine-131 6.94E-02 7.48E-01 4.42E-01 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Iron-55 -6.75E+00 6.41E+01 4.02E+01 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Iron-59 4.64E-01 4.13E+00 2.47E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Lanthanum-140 -1.16E+00 4.16E+00 2.63E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Manganese-54 -5.22E-01 1.75E+00 1.26E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Nickel-63 2.81E-01 2.45E+01 1.46E+01 pCi/L 184

Drinking Water Sample Results WW2 Water Well 02(554636003) - DW 2-Sep-21 Niobium-95 1.12E+00 2.13E+00 1.42E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Total Strontium -7.87E-01 1.12E+00 6.12E-01 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Tritium 7.10E+01 3.10E+02 1.89E+02 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Zinc-65 -1.95E-01 3.66E+00 2.57E+00 pCi/L WW2 Water Well 02(554636003) - DW 2-Sep-21 Zirconium-95 -2.51E-01 3.64E+00 2.16E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 BETA 8.24E+00 2.62E+00 2.30E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Barium-140 -1.84E+00 1.13E+01 7.80E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Cesium-134 1.40E-01 1.75E+00 1.07E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Cesium-137 -6.78E-01 1.52E+00 1.02E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Cobalt-58 -3.80E-01 1.52E+00 9.86E-01 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Cobalt-60 4.89E-01 1.80E+00 1.05E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Iodine-131 1.23E-01 9.78E-01 5.95E-01 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Iron-55 -3.49E+01 8.25E+01 6.06E+01 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Iron-59 2.35E+00 3.87E+00 2.40E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Lanthanum-140 2.16E+00 4.20E+00 3.31E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Manganese-54 -9.60E-01 1.50E+00 1.10E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Nickel-63 -3.87E+00 1.74E+01 1.03E+01 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Niobium-95 1.45E+00 2.14E+00 2.07E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Total Strontium -4.84E-01 1.91E+00 1.10E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Tritium 8.58E+01 2.86E+02 1.75E+02 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Zinc-65 7.33E-01 3.10E+00 2.00E+00 pCi/L WW2 Water Well 02(562132007) - DW 16-Nov-21 Zirconium-95 -1.64E+00 2.87E+00 2.29E+00 pCi/L 185

Fish Sample Results 2F1 Morro Bay FH Market Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 2F1 Morro Bay(532348002) - FH Market 19-Jan-21 Cesium-134 7.44E-01 9.72E+00 5.76E+00 pCi/kg 2F1 Morro Bay(532348002) - FH Market 19-Jan-21 Cesium-137 5.39E+00 5.39E+00 6.95E+00 pCi/kg 2F1 Morro Bay(532348002) - FH Market 19-Jan-21 Cobalt-58 -1.63E+00 7.98E+00 5.32E+00 pCi/kg 2F1 Morro Bay(532348002) - FH Market 19-Jan-21 Cobalt-60 2.73E+00 1.25E+01 6.87E+00 pCi/kg 2F1 Morro Bay(532348002) - FH Market 19-Jan-21 Iron-59 -1.10E+01 1.80E+01 1.38E+01 pCi/kg 2F1 Morro Bay(532348002) - FH Market 19-Jan-21 Manganese-54 4.21E+00 7.87E+00 5.71E+00 pCi/kg 2F1 Morro Bay(532348002) - FH Market 19-Jan-21 Zinc-65 -2.59E+00 2.17E+01 1.32E+01 pCi/kg 2F1 Morro Bay(541785001) - FH Market 22-Apr-21 Cesium-134 1.21E+01 3.19E+01 1.91E+01 pCi/kg 2F1 Morro Bay(541785001) - FH Market 22-Apr-21 Cesium-137 -9.62E-01 3.10E+01 1.87E+01 pCi/kg 2F1 Morro Bay(541785001) - FH Market 22-Apr-21 Cobalt-58 1.29E+01 2.87E+01 1.72E+01 pCi/kg 2F1 Morro Bay(541785001) - FH Market 22-Apr-21 Cobalt-60 -2.04E+01 3.44E+01 3.82E+01 pCi/kg 2F1 Morro Bay(541785001) - FH Market 22-Apr-21 Iron-59 -1.51E+01 5.81E+01 3.62E+01 pCi/kg 2F1 Morro Bay(541785001) - FH Market 22-Apr-21 Manganese-54 -1.83E+01 2.79E+01 2.07E+01 pCi/kg 2F1 Morro Bay(541785001) - FH Market 22-Apr-21 Zinc-65 -1.56E+00 5.69E+01 3.80E+01 pCi/kg 2F1 Morro Bay(556928001) - FH Market 23-Sep-21 Cesium-134 -5.90E+00 2.14E+01 1.35E+01 pCi/kg 2F1 Morro Bay(556928001) - FH Market 23-Sep-21 Cesium-137 8.97E+00 2.18E+01 1.27E+01 pCi/kg 2F1 Morro Bay(556928001) - FH Market 23-Sep-21 Cobalt-58 -5.69E+00 1.91E+01 1.21E+01 pCi/kg 2F1 Morro Bay(556928001) - FH Market 23-Sep-21 Cobalt-60 2.48E+00 2.29E+01 1.32E+01 pCi/kg 2F1 Morro Bay(556928001) - FH Market 23-Sep-21 Iron-59 1.03E+00 4.28E+01 2.60E+01 pCi/kg 2F1 Morro Bay(556928001) - FH Market 23-Sep-21 Manganese-54 1.91E+00 2.06E+01 1.22E+01 pCi/kg 2F1 Morro Bay(556928001) - FH Market 23-Sep-21 Zinc-65 -2.99E-01 4.70E+01 2.87E+01 pCi/kg 7C2 Rattlesnake Canyon FH Perch Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C2 Rattlesnake Canyon(532388008) - FH Perch 21-Jan-21 Cesium-134 4.42E+00 9.54E+00 6.30E+00 pCi/kg 7C2 Rattlesnake Canyon(532388008) - FH Perch 21-Jan-21 Cesium-137 7.71E+00 8.79E+00 7.37E+00 pCi/kg 7C2 Rattlesnake Canyon(532388008) - FH Perch 21-Jan-21 Cobalt-58 4.48E+00 9.61E+00 5.75E+00 pCi/kg 7C2 Rattlesnake Canyon(532388008) - FH Perch 21-Jan-21 Cobalt-60 4.35E+00 1.06E+01 6.12E+00 pCi/kg 7C2 Rattlesnake Canyon(532388008) - FH Perch 21-Jan-21 Iron-59 1.42E+01 2.45E+01 1.75E+01 pCi/kg 7C2 Rattlesnake Canyon(532388008) - FH Perch 21-Jan-21 Manganese-54 2.90E+00 8.93E+00 5.30E+00 pCi/kg 186

Fish Sample Results 7C2 Rattlesnake Canyon(532388008) - FH Perch 21-Jan-21 Zinc-65 9.84E-01 2.43E+01 1.63E+01 pCi/kg 7C2 Rattlesnake Canyon(543944001) - FH Perch 6-May-21 Cesium-134 7.14E+00 2.07E+01 1.24E+01 pCi/kg 7C2 Rattlesnake Canyon(543944001) - FH Perch 6-May-21 Cesium-137 1.83E+01 1.83E+01 2.01E+01 pCi/kg 7C2 Rattlesnake Canyon(543944001) - FH Perch 6-May-21 Cobalt-58 -4.43E+00 2.04E+01 1.30E+01 pCi/kg 7C2 Rattlesnake Canyon(543944001) - FH Perch 6-May-21 Cobalt-60 -4.55E+00 1.82E+01 1.15E+01 pCi/kg 7C2 Rattlesnake Canyon(543944001) - FH Perch 6-May-21 Iron-59 4.75E+00 4.28E+01 2.62E+01 pCi/kg 7C2 Rattlesnake Canyon(543944001) - FH Perch 6-May-21 Manganese-54 2.93E+00 1.85E+01 1.11E+01 pCi/kg 7C2 Rattlesnake Canyon(543944001) - FH Perch 6-May-21 Zinc-65 -3.69E+00 4.18E+01 3.85E+01 pCi/kg 7C2 Rattlesnake Canyon(552196001) - FH Perch 28-Jul-21 Cesium-134 1.24E+01 2.51E+01 1.58E+01 pCi/kg 7C2 Rattlesnake Canyon(552196001) - FH Perch 28-Jul-21 Cesium-137 7.45E+00 2.19E+01 1.27E+01 pCi/kg 7C2 Rattlesnake Canyon(552196001) - FH Perch 28-Jul-21 Cobalt-58 2.02E+01 2.18E+01 1.63E+01 pCi/kg 7C2 Rattlesnake Canyon(552196001) - FH Perch 28-Jul-21 Cobalt-60 -8.92E+00 2.28E+01 1.75E+01 pCi/kg 7C2 Rattlesnake Canyon(552196001) - FH Perch 28-Jul-21 Iron-59 -1.83E+01 5.04E+01 3.39E+01 pCi/kg 7C2 Rattlesnake Canyon(552196001) - FH Perch 28-Jul-21 Manganese-54 7.66E+00 2.17E+01 1.28E+01 pCi/kg 7C2 Rattlesnake Canyon(552196001) - FH Perch 28-Jul-21 Zinc-65 -3.38E+01 5.27E+01 4.19E+01 pCi/kg 7C2 Rattlesnake Canyon(562874003) - FH Perch 18-Nov-21 Cesium-134 2.35E+00 2.13E+01 1.28E+01 pCi/kg 7C2 Rattlesnake Canyon(562874003) - FH Perch 18-Nov-21 Cesium-137 9.07E-01 2.06E+01 1.22E+01 pCi/kg 7C2 Rattlesnake Canyon(562874003) - FH Perch 18-Nov-21 Cobalt-58 4.36E+00 2.23E+01 1.33E+01 pCi/kg 7C2 Rattlesnake Canyon(562874003) - FH Perch 18-Nov-21 Cobalt-60 -1.39E+00 2.45E+01 1.87E+01 pCi/kg 7C2 Rattlesnake Canyon(562874003) - FH Perch 18-Nov-21 Iron-59 -3.25E+01 4.57E+01 3.36E+01 pCi/kg 7C2 Rattlesnake Canyon(562874003) - FH Perch 18-Nov-21 Manganese-54 9.10E+00 2.12E+01 1.29E+01 pCi/kg 7C2 Rattlesnake Canyon(562874003) - FH Perch 18-Nov-21 Zinc-65 -1.15E+01 4.83E+01 3.03E+01 pCi/kg 7C2 Rattlesnake Canyon FH Rockfsh Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C2 Rattlesnake Canyon(532388009) - FH Rockfsh 21-Jan-21 Cesium-134 3.07E+00 8.33E+00 4.96E+00 pCi/kg 7C2 Rattlesnake Canyon(532388009) - FH Rockfsh 21-Jan-21 Cesium-137 3.66E+00 7.70E+00 6.17E+00 pCi/kg 7C2 Rattlesnake Canyon(532388009) - FH Rockfsh 21-Jan-21 Cobalt-58 1.51E+00 7.62E+00 4.53E+00 pCi/kg 7C2 Rattlesnake Canyon(532388009) - FH Rockfsh 21-Jan-21 Cobalt-60 1.54E+00 8.25E+00 4.75E+00 pCi/kg 7C2 Rattlesnake Canyon(532388009) - FH Rockfsh 21-Jan-21 Iron-59 -3.61E+00 1.66E+01 1.01E+01 pCi/kg 7C2 Rattlesnake Canyon(532388009) - FH Rockfsh 21-Jan-21 Manganese-54 -2.94E+00 6.95E+00 4.71E+00 pCi/kg 7C2 Rattlesnake Canyon(532388009) - FH Rockfsh 21-Jan-21 Zinc-65 1.22E+00 1.66E+01 9.52E+00 pCi/kg 7C2 Rattlesnake Canyon(543845001) - FH Rockfsh 6-May-21 Cesium-134 -1.08E+01 2.35E+01 1.60E+01 pCi/kg 187

Fish Sample Results 7C2 Rattlesnake Canyon(543845001) - FH Rockfsh 6-May-21 Cesium-137 -8.54E+00 2.12E+01 1.39E+01 pCi/kg 7C2 Rattlesnake Canyon(543845001) - FH Rockfsh 6-May-21 Cobalt-58 -7.57E+00 2.36E+01 1.54E+01 pCi/kg 7C2 Rattlesnake Canyon(543845001) - FH Rockfsh 6-May-21 Cobalt-60 5.77E+00 2.65E+01 1.53E+01 pCi/kg 7C2 Rattlesnake Canyon(543845001) - FH Rockfsh 6-May-21 Iron-59 -2.12E+01 5.37E+01 3.70E+01 pCi/kg 7C2 Rattlesnake Canyon(543845001) - FH Rockfsh 6-May-21 Manganese-54 3.00E+00 2.31E+01 1.38E+01 pCi/kg 7C2 Rattlesnake Canyon(543845001) - FH Rockfsh 6-May-21 Zinc-65 3.65E+01 5.29E+01 3.13E+01 pCi/kg 7C2 Rattlesnake Canyon(552195001) - FH Rockfsh 28-Jul-21 Cesium-134 -3.13E+01 2.60E+01 2.77E+01 pCi/kg 7C2 Rattlesnake Canyon(552195001) - FH Rockfsh 28-Jul-21 Cesium-137 1.64E+01 2.71E+01 2.18E+01 pCi/kg 7C2 Rattlesnake Canyon(552195001) - FH Rockfsh 28-Jul-21 Cobalt-58 1.43E+01 2.88E+01 1.78E+01 pCi/kg 7C2 Rattlesnake Canyon(552195001) - FH Rockfsh 28-Jul-21 Cobalt-60 5.09E+00 2.69E+01 1.55E+01 pCi/kg 7C2 Rattlesnake Canyon(552195001) - FH Rockfsh 28-Jul-21 Iron-59 -1.56E+00 5.85E+01 3.45E+01 pCi/kg 7C2 Rattlesnake Canyon(552195001) - FH Rockfsh 28-Jul-21 Manganese-54 5.70E+00 2.40E+01 1.46E+01 pCi/kg 7C2 Rattlesnake Canyon(552195001) - FH Rockfsh 28-Jul-21 Zinc-65 -2.62E+00 5.05E+01 3.00E+01 pCi/kg 7C2 Rattlesnake Canyon(562874004) - FH Rockfsh 18-Nov-21 Cesium-134 -3.35E+00 1.43E+01 9.14E+00 pCi/kg 7C2 Rattlesnake Canyon(562874004) - FH Rockfsh 18-Nov-21 Cesium-137 3.59E+00 1.54E+01 9.00E+00 pCi/kg 7C2 Rattlesnake Canyon(562874004) - FH Rockfsh 18-Nov-21 Cobalt-58 -4.20E+00 1.16E+01 7.80E+00 pCi/kg 7C2 Rattlesnake Canyon(562874004) - FH Rockfsh 18-Nov-21 Cobalt-60 1.28E+00 1.53E+01 8.86E+00 pCi/kg 7C2 Rattlesnake Canyon(562874004) - FH Rockfsh 18-Nov-21 Iron-59 -6.76E+00 3.51E+01 2.29E+01 pCi/kg 7C2 Rattlesnake Canyon(562874004) - FH Rockfsh 18-Nov-21 Manganese-54 4.03E+00 1.54E+01 9.18E+00 pCi/kg 7C2 Rattlesnake Canyon(562874004) - FH Rockfsh 18-Nov-21 Zinc-65 7.85E+00 3.44E+01 1.95E+01 pCi/kg 7D3 Avila Pier FH Market Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7D3 Avila Pier(532348001) - FH Market 19-Jan-21 Cesium-134 -9.87E-01 8.70E+00 5.32E+00 pCi/kg 7D3 Avila Pier(532348001) - FH Market 19-Jan-21 Cesium-137 8.04E+00 8.04E+00 1.08E+01 pCi/kg 7D3 Avila Pier(532348001) - FH Market 19-Jan-21 Cobalt-58 -4.44E+00 7.18E+00 5.55E+00 pCi/kg 7D3 Avila Pier(532348001) - FH Market 19-Jan-21 Cobalt-60 -1.85E+00 1.09E+01 6.77E+00 pCi/kg 7D3 Avila Pier(532348001) - FH Market 19-Jan-21 Iron-59 -1.35E+00 2.62E+01 1.60E+01 pCi/kg 7D3 Avila Pier(532348001) - FH Market 19-Jan-21 Manganese-54 1.74E+00 1.07E+01 6.09E+00 pCi/kg 7D3 Avila Pier(532348001) - FH Market 19-Jan-21 Zinc-65 -1.13E+01 2.20E+01 1.61E+01 pCi/kg 7D3 Avila Pier(541886001) - FH Market 21-Apr-21 Cesium-134 2.52E+00 1.91E+01 1.09E+01 pCi/kg 7D3 Avila Pier(541886001) - FH Market 21-Apr-21 Cesium-137 6.65E+00 1.84E+01 1.11E+01 pCi/kg 7D3 Avila Pier(541886001) - FH Market 21-Apr-21 Cobalt-58 -3.27E+00 1.66E+01 9.99E+00 pCi/kg 188

Fish Sample Results 7D3 Avila Pier(541886001) - FH Market 21-Apr-21 Cobalt-60 5.22E+00 2.04E+01 1.19E+01 pCi/kg 7D3 Avila Pier(541886001) - FH Market 21-Apr-21 Iron-59 -3.63E+00 3.32E+01 2.29E+01 pCi/kg 7D3 Avila Pier(541886001) - FH Market 21-Apr-21 Manganese-54 2.14E+00 1.78E+01 1.02E+01 pCi/kg 7D3 Avila Pier(541886001) - FH Market 21-Apr-21 Zinc-65 1.84E+00 4.03E+01 2.37E+01 pCi/kg 7D3 Avila Pier(559816001) - FH Market 19-Oct-21 Cesium-134 1.60E+01 2.11E+01 1.39E+01 pCi/kg 7D3 Avila Pier(559816001) - FH Market 19-Oct-21 Cesium-137 -1.17E+00 1.79E+01 1.06E+01 pCi/kg 7D3 Avila Pier(559816001) - FH Market 19-Oct-21 Cobalt-58 4.30E+00 1.85E+01 1.11E+01 pCi/kg 7D3 Avila Pier(559816001) - FH Market 19-Oct-21 Cobalt-60 5.76E-02 2.00E+01 1.21E+01 pCi/kg 7D3 Avila Pier(559816001) - FH Market 19-Oct-21 Iron-59 -3.57E+00 3.89E+01 2.33E+01 pCi/kg 7D3 Avila Pier(559816001) - FH Market 19-Oct-21 Manganese-54 -1.37E+01 1.75E+01 1.47E+01 pCi/kg 7D3 Avila Pier(559816001) - FH Market 19-Oct-21 Zinc-65 1.91E+01 4.26E+01 2.91E+01 pCi/kg DCM Diablo Cove Marine FH Perch Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DCM Diablo Cove Marine(532388006) - FH Perch 21-Jan-21 Cesium-134 4.90E-01 8.60E+00 5.17E+00 pCi/kg DCM Diablo Cove Marine(532388006) - FH Perch 21-Jan-21 Cesium-137 3.48E+00 8.49E+00 5.07E+00 pCi/kg DCM Diablo Cove Marine(532388006) - FH Perch 21-Jan-21 Cobalt-58 1.52E+00 7.54E+00 4.48E+00 pCi/kg DCM Diablo Cove Marine(532388006) - FH Perch 21-Jan-21 Cobalt-60 1.77E+00 8.51E+00 4.90E+00 pCi/kg DCM Diablo Cove Marine(532388006) - FH Perch 21-Jan-21 Iron-59 2.89E+00 1.89E+01 1.08E+01 pCi/kg DCM Diablo Cove Marine(532388006) - FH Perch 21-Jan-21 Manganese-54 -2.36E+00 7.45E+00 4.87E+00 pCi/kg DCM Diablo Cove Marine(532388006) - FH Perch 21-Jan-21 Zinc-65 3.47E+00 1.88E+01 1.15E+01 pCi/kg DCM Diablo Cove Marine(543944002) - FH Perch 6-May-21 Cesium-134 -1.43E-01 1.52E+01 9.22E+00 pCi/kg DCM Diablo Cove Marine(543944002) - FH Perch 6-May-21 Cesium-137 1.73E+01 1.76E+01 1.22E+01 pCi/kg DCM Diablo Cove Marine(543944002) - FH Perch 6-May-21 Cobalt-58 2.75E+00 1.64E+01 9.76E+00 pCi/kg DCM Diablo Cove Marine(543944002) - FH Perch 6-May-21 Cobalt-60 7.43E+00 2.00E+01 1.15E+01 pCi/kg DCM Diablo Cove Marine(543944002) - FH Perch 6-May-21 Iron-59 -5.27E+00 3.56E+01 2.30E+01 pCi/kg DCM Diablo Cove Marine(543944002) - FH Perch 6-May-21 Manganese-54 5.89E+00 1.57E+01 9.39E+00 pCi/kg DCM Diablo Cove Marine(543944002) - FH Perch 6-May-21 Zinc-65 -1.46E+00 3.48E+01 2.31E+01 pCi/kg DCM Diablo Cove Marine(552196002) - FH Perch 29-Jul-21 Cesium-134 7.56E+00 2.22E+01 1.33E+01 pCi/kg DCM Diablo Cove Marine(552196002) - FH Perch 29-Jul-21 Cesium-137 7.85E+00 1.89E+01 2.59E+01 pCi/kg DCM Diablo Cove Marine(552196002) - FH Perch 29-Jul-21 Cobalt-58 -9.25E+00 2.40E+01 1.58E+01 pCi/kg DCM Diablo Cove Marine(552196002) - FH Perch 29-Jul-21 Cobalt-60 3.88E+00 2.22E+01 1.29E+01 pCi/kg DCM Diablo Cove Marine(552196002) - FH Perch 29-Jul-21 Iron-59 -2.40E+01 5.20E+01 3.66E+01 pCi/kg 189

Fish Sample Results DCM Diablo Cove Marine(552196002) - FH Perch 29-Jul-21 Manganese-54 -5.62E+00 1.90E+01 1.41E+01 pCi/kg DCM Diablo Cove Marine(552196002) - FH Perch 29-Jul-21 Zinc-65 1.58E+01 4.69E+01 3.20E+01 pCi/kg DCM Diablo Cove Marine(562874001) - FH Perch 16-Nov-21 Cesium-134 1.20E+00 2.11E+01 1.29E+01 pCi/kg DCM Diablo Cove Marine(562874001) - FH Perch 16-Nov-21 Cesium-137 -2.11E+00 2.03E+01 1.24E+01 pCi/kg DCM Diablo Cove Marine(562874001) - FH Perch 16-Nov-21 Cobalt-58 -1.14E+01 2.03E+01 1.45E+01 pCi/kg DCM Diablo Cove Marine(562874001) - FH Perch 16-Nov-21 Cobalt-60 5.99E+00 1.88E+01 1.08E+01 pCi/kg DCM Diablo Cove Marine(562874001) - FH Perch 16-Nov-21 Iron-59 1.28E+01 3.90E+01 2.23E+01 pCi/kg DCM Diablo Cove Marine(562874001) - FH Perch 16-Nov-21 Manganese-54 7.71E+00 2.03E+01 1.24E+01 pCi/kg DCM Diablo Cove Marine(562874001) - FH Perch 16-Nov-21 Zinc-65 2.58E+01 4.39E+01 4.87E+01 pCi/kg DCM Diablo Cove Marine FH Rockfsh Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DCM Diablo Cove Marine(532388007) - FH Rockfsh 21-Jan-21 Cesium-134 4.72E+00 8.89E+00 5.34E+00 pCi/kg DCM Diablo Cove Marine(532388007) - FH Rockfsh 21-Jan-21 Cesium-137 5.84E+00 9.22E+00 5.69E+00 pCi/kg DCM Diablo Cove Marine(532388007) - FH Rockfsh 21-Jan-21 Cobalt-58 1.34E+00 8.47E+00 5.58E+00 pCi/kg DCM Diablo Cove Marine(532388007) - FH Rockfsh 21-Jan-21 Cobalt-60 -1.39E+00 7.85E+00 5.49E+00 pCi/kg DCM Diablo Cove Marine(532388007) - FH Rockfsh 21-Jan-21 Iron-59 -1.20E+01 1.78E+01 1.53E+01 pCi/kg DCM Diablo Cove Marine(532388007) - FH Rockfsh 21-Jan-21 Manganese-54 -2.13E+00 7.94E+00 5.10E+00 pCi/kg DCM Diablo Cove Marine(532388007) - FH Rockfsh 21-Jan-21 Zinc-65 -6.71E+00 1.90E+01 1.19E+01 pCi/kg DCM Diablo Cove Marine(543845002) - FH Rockfsh 6-May-21 Cesium-134 -1.42E+00 1.74E+01 1.10E+01 pCi/kg DCM Diablo Cove Marine(543845002) - FH Rockfsh 6-May-21 Cesium-137 8.65E+00 1.92E+01 1.18E+01 pCi/kg DCM Diablo Cove Marine(543845002) - FH Rockfsh 6-May-21 Cobalt-58 -5.61E+00 1.84E+01 1.24E+01 pCi/kg DCM Diablo Cove Marine(543845002) - FH Rockfsh 6-May-21 Cobalt-60 4.25E+00 1.90E+01 1.11E+01 pCi/kg DCM Diablo Cove Marine(543845002) - FH Rockfsh 6-May-21 Iron-59 -3.96E+00 4.47E+01 2.70E+01 pCi/kg DCM Diablo Cove Marine(543845002) - FH Rockfsh 6-May-21 Manganese-54 -3.43E+00 1.68E+01 1.02E+01 pCi/kg DCM Diablo Cove Marine(543845002) - FH Rockfsh 6-May-21 Zinc-65 -1.66E+01 3.50E+01 2.98E+01 pCi/kg DCM Diablo Cove Marine(552195002) - FH Rockfsh 29-Jul-21 Cesium-134 2.04E+00 2.32E+01 1.38E+01 pCi/kg DCM Diablo Cove Marine(552195002) - FH Rockfsh 29-Jul-21 Cesium-137 -1.71E+00 2.01E+01 1.21E+01 pCi/kg DCM Diablo Cove Marine(552195002) - FH Rockfsh 29-Jul-21 Cobalt-58 -4.19E+00 2.30E+01 1.48E+01 pCi/kg DCM Diablo Cove Marine(552195002) - FH Rockfsh 29-Jul-21 Cobalt-60 2.04E+01 2.32E+01 4.91E+01 pCi/kg DCM Diablo Cove Marine(552195002) - FH Rockfsh 29-Jul-21 Iron-59 -2.45E+01 4.29E+01 3.64E+01 pCi/kg DCM Diablo Cove Marine(552195002) - FH Rockfsh 29-Jul-21 Manganese-54 4.56E+00 1.97E+01 1.31E+01 pCi/kg DCM Diablo Cove Marine(552195002) - FH Rockfsh 29-Jul-21 Zinc-65 -3.65E+01 4.78E+01 5.25E+01 pCi/kg 190

Fish Sample Results DCM Diablo Cove Marine(562874002) - FH Rockfsh 16-Nov-21 Cesium-134 5.50E+00 2.35E+01 1.41E+01 pCi/kg DCM Diablo Cove Marine(562874002) - FH Rockfsh 16-Nov-21 Cesium-137 7.01E+00 2.26E+01 1.31E+01 pCi/kg DCM Diablo Cove Marine(562874002) - FH Rockfsh 16-Nov-21 Cobalt-58 1.07E+01 2.43E+01 1.44E+01 pCi/kg DCM Diablo Cove Marine(562874002) - FH Rockfsh 16-Nov-21 Cobalt-60 1.36E+01 2.56E+01 1.50E+01 pCi/kg DCM Diablo Cove Marine(562874002) - FH Rockfsh 16-Nov-21 Iron-59 -1.59E+01 5.22E+01 3.43E+01 pCi/kg DCM Diablo Cove Marine(562874002) - FH Rockfsh 16-Nov-21 Manganese-54 4.96E+00 2.06E+01 1.20E+01 pCi/kg DCM Diablo Cove Marine(562874002) - FH Rockfsh 16-Nov-21 Zinc-65 -9.45E+00 4.73E+01 3.02E+01 pCi/kg PON Pacific Ocean North of Diablo Cove FH Perch Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units PON Pacific Ocean North of Diablo Cove(532388011) - FH Perch 22-Jan-21 Cesium-134 2.04E+00 1.45E+01 8.65E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388011) - FH Perch 22-Jan-21 Cesium-137 6.44E+00 1.28E+01 1.34E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(532388011) - FH Perch 22-Jan-21 Cobalt-58 -4.76E+00 1.25E+01 9.43E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388011) - FH Perch 22-Jan-21 Cobalt-60 -1.26E-03 1.34E+01 7.88E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388011) - FH Perch 22-Jan-21 Iron-59 -4.45E+00 2.97E+01 1.77E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(532388011) - FH Perch 22-Jan-21 Manganese-54 3.44E-01 1.27E+01 7.68E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388011) - FH Perch 22-Jan-21 Zinc-65 -1.88E+01 2.81E+01 2.00E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543944003) - FH Perch 5-May-21 Cesium-134 2.87E+00 2.49E+01 1.53E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543944003) - FH Perch 5-May-21 Cesium-137 1.66E+01 2.07E+01 1.92E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543944003) - FH Perch 5-May-21 Cobalt-58 -2.30E+01 2.27E+01 2.21E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543944003) - FH Perch 5-May-21 Cobalt-60 3.40E-01 2.29E+01 1.37E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543944003) - FH Perch 5-May-21 Iron-59 2.58E+01 5.80E+01 3.38E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543944003) - FH Perch 5-May-21 Manganese-54 5.76E+00 2.33E+01 1.42E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543944003) - FH Perch 5-May-21 Zinc-65 -1.55E+01 4.87E+01 3.12E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552196003) - FH Perch 14-Jul-21 Cesium-134 3.22E+00 1.99E+01 1.19E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552196003) - FH Perch 14-Jul-21 Cesium-137 1.01E+01 1.95E+01 1.34E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552196003) - FH Perch 14-Jul-21 Cobalt-58 -5.75E+00 2.34E+01 1.96E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552196003) - FH Perch 14-Jul-21 Cobalt-60 -1.08E+01 1.67E+01 1.24E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552196003) - FH Perch 14-Jul-21 Iron-59 -1.80E+01 5.41E+01 3.71E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552196003) - FH Perch 14-Jul-21 Manganese-54 9.99E+00 2.10E+01 1.27E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552196003) - FH Perch 14-Jul-21 Zinc-65 2.38E+01 4.94E+01 3.00E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874005) - FH Perch 15-Nov-21 Cesium-134 -9.03E+00 2.11E+01 1.78E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874005) - FH Perch 15-Nov-21 Cesium-137 -4.64E+00 2.37E+01 2.17E+01 pCi/kg 191

Fish Sample Results PON Pacific Ocean North of Diablo Cove(562874005) - FH Perch 15-Nov-21 Cobalt-58 -5.06E+00 1.92E+01 1.37E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874005) - FH Perch 15-Nov-21 Cobalt-60 -8.04E+00 2.08E+01 1.45E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874005) - FH Perch 15-Nov-21 Iron-59 -1.64E+01 4.46E+01 3.00E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874005) - FH Perch 15-Nov-21 Manganese-54 4.38E+00 2.00E+01 1.27E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874005) - FH Perch 15-Nov-21 Zinc-65 7.70E+00 5.01E+01 3.32E+01 pCi/kg PON Pacific Ocean North of Diablo Cove FH Rockfsh Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units PON Pacific Ocean North of Diablo Cove(532388012) - FH Rockfsh 22-Jan-21 Cesium-134 4.31E+00 1.07E+01 6.37E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388012) - FH Rockfsh 22-Jan-21 Cesium-137 6.79E+00 7.87E+00 1.09E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(532388012) - FH Rockfsh 22-Jan-21 Cobalt-58 -2.02E+00 8.51E+00 5.58E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388012) - FH Rockfsh 22-Jan-21 Cobalt-60 2.16E+00 1.07E+01 6.14E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388012) - FH Rockfsh 22-Jan-21 Iron-59 -3.60E+00 2.23E+01 1.36E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(532388012) - FH Rockfsh 22-Jan-21 Manganese-54 -7.57E+00 8.98E+00 8.91E+00 pCi/kg PON Pacific Ocean North of Diablo Cove(532388012) - FH Rockfsh 22-Jan-21 Zinc-65 -1.30E+00 2.36E+01 1.41E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543845003) - FH Rockfsh 5-May-21 Cesium-134 -4.33E+00 1.89E+01 1.61E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543845003) - FH Rockfsh 5-May-21 Cesium-137 8.05E+00 1.80E+01 1.91E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543845003) - FH Rockfsh 5-May-21 Cobalt-58 4.04E-01 1.87E+01 1.11E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543845003) - FH Rockfsh 5-May-21 Cobalt-60 4.92E+00 1.97E+01 1.18E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543845003) - FH Rockfsh 5-May-21 Iron-59 -1.05E+01 4.14E+01 3.07E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543845003) - FH Rockfsh 5-May-21 Manganese-54 -1.58E+01 1.65E+01 1.84E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(543845003) - FH Rockfsh 5-May-21 Zinc-65 -1.93E+00 4.29E+01 2.63E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552195003) - FH Rockfsh 14-Jul-21 Cesium-134 3.62E+00 2.72E+01 1.65E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552195003) - FH Rockfsh 14-Jul-21 Cesium-137 5.19E+00 2.45E+01 1.46E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552195003) - FH Rockfsh 14-Jul-21 Cobalt-58 1.63E+01 3.26E+01 1.99E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552195003) - FH Rockfsh 14-Jul-21 Cobalt-60 -1.16E+01 2.20E+01 1.57E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552195003) - FH Rockfsh 14-Jul-21 Iron-59 -2.13E+01 7.04E+01 4.48E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552195003) - FH Rockfsh 14-Jul-21 Manganese-54 9.22E+00 2.53E+01 1.53E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(552195003) - FH Rockfsh 14-Jul-21 Zinc-65 -2.11E+00 5.62E+01 3.33E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874006) - FH Rockfsh 15-Nov-21 Cesium-134 7.72E+00 2.33E+01 2.31E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874006) - FH Rockfsh 15-Nov-21 Cesium-137 1.10E+01 1.59E+01 1.34E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874006) - FH Rockfsh 15-Nov-21 Cobalt-58 1.50E+01 2.42E+01 1.49E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874006) - FH Rockfsh 15-Nov-21 Cobalt-60 5.03E+00 2.49E+01 1.69E+01 pCi/kg 192

Fish Sample Results PON Pacific Ocean North of Diablo Cove(562874006) - FH Rockfsh 15-Nov-21 Iron-59 1.25E+01 5.15E+01 3.41E+01 pCi/kg I I PON Pacific Ocean North of Diablo Cove(562874006) - FH Rockfsh 15-Nov-21 Manganese-54 1.76E+01 1.76E+01 1.32E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(562874006) - FH Rockfsh 15-Nov-21 Zinc-65 -3.47E+00 4.51E+01 2.77E+01 pCi/kg POS Pacific Ocean South of Diablo Cove FH Perch Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units POS Pacific Ocean South of Diablo Cove(532388013) - FH Perch 22-Jan-21 Cesium-134 2.09E+00 1.55E+01 9.21E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388013) - FH Perch 22-Jan-21 Cesium-137 1.22E+01 1.22E+01 1.25E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(532388013) - FH Perch 22-Jan-21 Cobalt-58 2.80E+00 1.46E+01 8.50E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388013) - FH Perch 22-Jan-21 Cobalt-60 1.66E+01 1.84E+01 1.81E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(532388013) - FH Perch 22-Jan-21 Iron-59 3.63E-01 4.32E+01 2.53E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(532388013) - FH Perch 22-Jan-21 Manganese-54 2.73E-01 1.33E+01 8.12E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388013) - FH Perch 22-Jan-21 Zinc-65 -8.45E+00 3.22E+01 2.07E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543944004) - FH Perch 5-May-21 Cesium-134 1.02E+01 2.91E+01 1.72E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543944004) - FH Perch 5-May-21 Cesium-137 1.46E+01 2.91E+01 1.74E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543944004) - FH Perch 5-May-21 Cobalt-58 7.84E+00 3.13E+01 1.86E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543944004) - FH Perch 5-May-21 Cobalt-60 -5.70E+00 2.51E+01 1.61E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543944004) - FH Perch 5-May-21 Iron-59 2.75E+01 6.41E+01 3.59E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543944004) - FH Perch 5-May-21 Manganese-54 2.70E+00 2.11E+01 1.26E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543944004) - FH Perch 5-May-21 Zinc-65 -4.53E+01 5.79E+01 4.68E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552196004) - FH Perch 28-Jul-21 Cesium-134 -3.75E+00 1.80E+01 1.49E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552196004) - FH Perch 28-Jul-21 Cesium-137 3.87E+00 1.79E+01 1.09E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552196004) - FH Perch 28-Jul-21 Cobalt-58 2.18E+00 1.94E+01 1.12E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552196004) - FH Perch 28-Jul-21 Cobalt-60 -4.94E-01 1.69E+01 1.20E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552196004) - FH Perch 28-Jul-21 Iron-59 -1.19E+01 4.19E+01 2.70E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552196004) - FH Perch 28-Jul-21 Manganese-54 -7.01E+00 1.67E+01 1.09E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552196004) - FH Perch 28-Jul-21 Zinc-65 7.83E+00 4.19E+01 2.48E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874007) - FH Perch 19-Nov-21 Cesium-134 1.97E+01 3.31E+01 2.05E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874007) - FH Perch 19-Nov-21 Cesium-137 2.12E+01 2.85E+01 2.43E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874007) - FH Perch 19-Nov-21 Cobalt-58 6.15E+00 3.22E+01 1.94E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874007) - FH Perch 19-Nov-21 Cobalt-60 -7.91E+00 3.53E+01 3.05E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874007) - FH Perch 19-Nov-21 Iron-59 1.52E+01 6.68E+01 3.84E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874007) - FH Perch 19-Nov-21 Manganese-54 9.65E+00 2.88E+01 1.74E+01 pCi/kg 193

Fish Sample Results POS Pacific Ocean South of Diablo Cove(562874007) - FH Perch 19-Nov-21 Zinc-65 -1.40E+01 6.16E+01 3.82E+01 pCi/kg POS Pacific Ocean South of Diablo Cove FH Rockfsh Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units POS Pacific Ocean South of Diablo Cove(532388014) - FH Rockfsh 22-Jan-21 Cesium-134 2.84E+00 9.18E+00 5.46E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388014) - FH Rockfsh 22-Jan-21 Cesium-137 3.86E+00 9.20E+00 5.50E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388014) - FH Rockfsh 22-Jan-21 Cobalt-58 1.73E-01 8.14E+00 5.52E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388014) - FH Rockfsh 22-Jan-21 Cobalt-60 -2.75E-01 8.67E+00 5.15E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388014) - FH Rockfsh 22-Jan-21 Iron-59 -2.59E+00 1.74E+01 1.04E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(532388014) - FH Rockfsh 22-Jan-21 Manganese-54 -2.23E+00 7.15E+00 4.69E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(532388014) - FH Rockfsh 22-Jan-21 Zinc-65 1.22E+00 1.95E+01 1.13E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543845004) - FH Rockfsh 5-May-21 Cesium-134 2.19E+00 2.06E+01 1.39E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543845004) - FH Rockfsh 5-May-21 Cesium-137 3.60E+00 2.11E+01 1.23E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543845004) - FH Rockfsh 5-May-21 Cobalt-58 3.75E+00 2.33E+01 1.56E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543845004) - FH Rockfsh 5-May-21 Cobalt-60 4.24E+00 2.18E+01 1.27E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543845004) - FH Rockfsh 5-May-21 Iron-59 9.09E+00 5.22E+01 3.17E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543845004) - FH Rockfsh 5-May-21 Manganese-54 5.58E+00 2.11E+01 1.26E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(543845004) - FH Rockfsh 5-May-21 Zinc-65 1.59E+01 4.46E+01 3.05E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552195004) - FH Rockfsh 28-Jul-21 Cesium-134 6.39E+00 2.13E+01 1.43E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552195004) - FH Rockfsh 28-Jul-21 Cesium-137 1.70E+01 1.70E+01 1.31E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552195004) - FH Rockfsh 28-Jul-21 Cobalt-58 2.74E+00 2.11E+01 1.29E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552195004) - FH Rockfsh 28-Jul-21 Cobalt-60 2.30E+00 2.25E+01 1.34E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552195004) - FH Rockfsh 28-Jul-21 Iron-59 2.15E+01 4.95E+01 4.27E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552195004) - FH Rockfsh 28-Jul-21 Manganese-54 1.77E+01 1.77E+01 1.53E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(552195004) - FH Rockfsh 28-Jul-21 Zinc-65 -2.07E+01 4.12E+01 2.84E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874008) - FH Rockfsh 19-Nov-21 Cesium-134 6.71E+00 1.70E+01 1.01E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874008) - FH Rockfsh 19-Nov-21 Cesium-137 1.36E+01 1.36E+01 1.53E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874008) - FH Rockfsh 19-Nov-21 Cobalt-58 -3.84E+00 1.44E+01 9.27E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(562874008) - FH Rockfsh 19-Nov-21 Cobalt-60 3.41E+00 1.63E+01 1.04E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874008) - FH Rockfsh 19-Nov-21 Iron-59 -2.50E+00 2.99E+01 1.90E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(562874008) - FH Rockfsh 19-Nov-21 Manganese-54 6.48E-01 1.30E+01 7.83E+00 pCi/kg POS Pacific Ocean South of Diablo Cove(562874008) - FH Rockfsh 19-Nov-21 Zinc-65 1.54E+00 3.33E+01 1.92E+01 pCi/kg 194

Groundwater Sample Results 8S3 DCSF96-1 GW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 8S3 DCSF96-1(534816001) - GW 9-Feb-21 BETA 4.48E+00 1.74E+00 1.39E+00 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Barium-140 3.10E+00 6.81E+00 4.08E+00 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Cesium-134 -7.80E-02 1.38E+00 8.34E-01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Cesium-137 -2.16E-02 1.35E+00 8.00E-01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Cobalt-58 -4.30E-01 1.34E+00 8.62E-01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Cobalt-60 -6.03E-02 1.47E+00 8.54E-01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Iodine-131 7.70E-01 2.30E+00 1.34E+00 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Iron-55 5.07E+00 1.01E+02 6.47E+01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Iron-59 6.47E-01 2.80E+00 1.69E+00 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Lanthanum-140 -2.92E-01 1.85E+00 1.13E+00 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Manganese-54 -6.69E-01 1.18E+00 8.24E-01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Nickel-63 -5.09E+00 3.14E+01 1.86E+01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Niobium-95 -1.27E-01 1.38E+00 9.35E-01 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Total Strontium 6.64E-02 1.84E+00 1.10E+00 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Tritium 7.11E+01 2.77E+02 1.69E+02 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Zinc-65 -1.55E+00 2.55E+00 2.09E+00 pCi/L 8S3 DCSF96-1(534816001) - GW 9-Feb-21 Zirconium-95 -1.98E+00 2.17E+00 2.32E+00 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 BETA 3.25E+00 1.61E+00 1.19E+00 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Barium-140 -3.81E-01 7.96E+00 4.77E+00 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Cesium-134 4.48E-01 1.62E+00 9.73E-01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Cesium-137 -1.77E-01 1.44E+00 8.89E-01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Cobalt-58 2.68E-01 1.51E+00 9.07E-01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Cobalt-60 2.46E-01 1.53E+00 8.86E-01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Iodine-131 3.75E-03 2.92E+00 1.70E+00 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Iron-55 -4.23E+01 1.23E+02 8.98E+01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Iron-59 -8.74E-01 2.93E+00 1.83E+00 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Lanthanum-140 -1.57E+00 2.23E+00 1.70E+00 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Manganese-54 7.33E-01 1.53E+00 9.38E-01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Nickel-63 1.62E+01 2.25E+01 1.46E+01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Niobium-95 4.17E-01 1.55E+00 9.31E-01 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Total Strontium 4.99E-01 1.52E+00 9.54E-01 pCi/L 195

Groundwater Sample Results 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Tritium -5.39E+01 3.32E+02 1.95E+02 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Zinc-65 1.68E+00 3.27E+00 1.92E+00 pCi/L 8S3 DCSF96-1(539120004) - GW 26-Apr-21 Zirconium-95 -5.11E-01 2.50E+00 1.58E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 BETA 5.86E+00 1.71E+00 1.53E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Barium-140 -2.44E+00 1.10E+01 6.92E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Cesium-134 4.64E-01 2.40E+00 1.37E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Cesium-137 -9.33E-01 2.29E+00 2.57E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Cobalt-58 7.26E-01 2.23E+00 1.28E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Cobalt-60 5.32E-01 2.57E+00 1.51E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Iodine-131 -1.65E+00 3.64E+00 2.36E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Iron-55 -6.11E+00 1.09E+02 8.09E+01 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Iron-59 2.18E+00 5.11E+00 3.01E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Lanthanum-140 -9.90E-01 4.27E+00 2.74E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Manganese-54 -8.82E-02 2.04E+00 1.19E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Nickel-63 8.77E-01 2.86E+01 1.71E+01 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Niobium-95 6.25E-01 2.23E+00 1.28E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Total Strontium -2.21E-01 4.52E-01 2.41E-01 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Tritium 1.50E+02 2.43E+02 1.54E+02 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Zinc-65 -4.24E-01 4.71E+00 2.82E+00 pCi/L 8S3 DCSF96-1(557834004) - GW 28-Sep-21 Zirconium-95 -5.92E-01 3.93E+00 2.50E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 BETA 8.56E+00 1.71E+00 1.88E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Barium-140 1.95E+00 7.77E+00 4.57E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Cesium-134 7.38E-01 1.83E+00 1.11E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Cesium-137 6.08E-01 1.59E+00 9.51E-01 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Cobalt-58 6.06E-01 1.55E+00 1.03E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Cobalt-60 2.21E-01 1.59E+00 9.21E-01 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Iodine-131 1.62E+00 2.94E+00 1.79E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Iron-55 8.04E+00 8.14E+01 5.61E+01 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Iron-59 3.46E-01 3.06E+00 1.75E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Lanthanum-140 -1.19E+00 2.18E+00 1.57E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Manganese-54 -4.90E-01 1.41E+00 9.33E-01 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Nickel-63 -6.27E+00 2.82E+01 1.65E+01 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Niobium-95 9.91E-01 1.64E+00 1.11E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Total Strontium 5.29E-01 1.26E+00 8.15E-01 pCi/L 196

Groundwater Sample Results 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Tritium 1.04E+02 2.84E+02 1.75E+02 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Zinc-65 -2.10E-01 2.94E+00 1.97E+00 pCi/L 8S3 DCSF96-1(562871003) - GW 22-Nov-21 Zirconium-95 7.15E-01 2.90E+00 1.73E+00 I I pCi/L DY1 Drywell 115 GW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DY1 Drywell 115(548068001) - GW 21-Jun-21 Barium-140 1.20E+00 9.32E+00 5.47E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Cesium-134 5.09E-01 1.82E+00 1.09E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Cesium-137 3.54E-01 1.65E+00 9.81E-01 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Cobalt-58 -1.70E-01 1.73E+00 1.07E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Cobalt-60 -3.92E-01 1.37E+00 9.44E-01 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Iodine-131 8.00E-02 3.90E+00 2.50E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Iron-59 8.83E-01 3.20E+00 1.83E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Lanthanum-140 9.32E-01 3.02E+00 1.76E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Manganese-54 8.24E-01 1.37E+00 1.05E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Niobium-95 -1.38E-01 1.58E+00 9.69E-01 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Tritium 9.22E+03 2.98E+02 1.96E+03 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Zinc-65 4.93E-01 2.87E+00 1.64E+00 pCi/L DY1 Drywell 115(548068001) - GW 21-Jun-21 Zirconium-95 1.37E+00 2.74E+00 1.83E+00 pCi/L GW1 Groundwater Monitoring Well 1 GW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 BETA 1.88E+01 1.56E+01 1.03E+01 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Barium-140 -9.24E-01 8.11E+00 5.02E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Cesium-134 6.12E-01 1.84E+00 1.08E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Cesium-137 1.24E-01 1.69E+00 1.10E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Cobalt-58 -1.17E+00 1.71E+00 1.47E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Cobalt-60 7.85E-01 1.81E+00 1.06E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Iodine-131 -1.08E+00 2.86E+00 1.80E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Iron-55 3.51E+01 9.33E+01 6.17E+01 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Iron-59 -7.33E-01 3.62E+00 2.25E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Lanthanum-140 -6.94E-01 2.95E+00 1.82E+00 pCi/L 197

Groundwater Sample Results GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Manganese-54 -2.22E-02 1.64E+00 9.66E-01 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Nickel-63 -1.37E+01 3.91E+01 2.28E+01 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Niobium-95 1.27E+00 1.87E+00 1.30E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Total Strontium 1.57E-01 7.60E-01 4.71E-01 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Tritium 1.63E+02 2.79E+02 1.76E+02 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Zinc-65 4.34E-01 3.70E+00 2.52E+00 pCi/L GW1 Groundwater Monitoring Well 1(534813001) - GW 9-Feb-21 Zirconium-95 1.03E-01 3.12E+00 1.82E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 BETA 8.63E+00 1.15E+01 7.41E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Barium-140 -4.47E-01 8.78E+00 5.84E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Cesium-134 -1.24E-02 1.81E+00 1.11E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Cesium-137 1.94E-01 1.80E+00 1.51E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Cobalt-58 -4.42E-01 1.57E+00 1.14E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Cobalt-60 -2.52E-01 1.88E+00 1.40E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Iodine-131 5.49E-01 3.23E+00 1.86E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Iron-55 -3.65E+01 1.26E+02 9.25E+01 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Iron-59 -9.81E-01 3.43E+00 2.11E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Lanthanum-140 1.21E-01 3.00E+00 1.79E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Manganese-54 -1.57E+00 1.47E+00 1.36E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Nickel-63 1.19E+01 2.01E+01 1.28E+01 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Niobium-95 1.47E+00 1.87E+00 1.25E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Total Strontium -1.70E-01 6.70E-01 3.77E-01 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Tritium 1.20E+02 3.25E+02 2.02E+02 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Zinc-65 -3.02E-01 3.41E+00 2.29E+00 pCi/L GW1 Groundwater Monitoring Well 1(539120003) - GW 27-Apr-21 Zirconium-95 6.03E-01 2.83E+00 1.70E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 BETA 1.22E+01 1.61E+01 1.04E+01 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Barium-140 -3.94E+00 1.02E+01 6.80E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Cesium-134 9.58E-01 2.26E+00 1.35E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Cesium-137 -1.28E-01 1.97E+00 1.31E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Cobalt-58 2.83E-01 2.05E+00 1.36E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Cobalt-60 1.11E+00 2.14E+00 1.26E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Iodine-131 1.47E+00 4.24E+00 2.57E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Iron-55 2.96E+01 1.12E+02 8.40E+01 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Iron-59 -2.11E+00 4.04E+00 2.79E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Lanthanum-140 -8.94E-01 4.17E+00 2.98E+00 pCi/L 198

Groundwater Sample Results GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Manganese-54 -6.26E-01 1.97E+00 1.96E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Nickel-63 2.20E+00 2.47E+01 1.49E+01 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Niobium-95 7.61E-01 2.19E+00 1.90E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Total Strontium -7.05E-03 4.13E-01 2.45E-01 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Tritium 1.27E+02 2.79E+02 1.73E+02 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Zinc-65 -1.20E+00 4.15E+00 3.07E+00 pCi/L GW1 Groundwater Monitoring Well 1(557834001) - GW 28-Sep-21 Zirconium-95 2.30E+00 3.70E+00 2.29E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 BETA 2.11E+01 1.85E+01 1.22E+01 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Barium-140 3.45E+00 1.10E+01 7.17E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Cesium-134 6.04E-01 2.30E+00 1.38E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Cesium-137 4.30E-01 2.19E+00 1.45E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Cobalt-58 -1.74E+00 1.85E+00 1.65E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Cobalt-60 -6.50E-02 2.17E+00 1.28E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Iodine-131 -4.91E-01 4.35E+00 2.54E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Iron-55 -2.22E+01 7.74E+01 5.23E+01 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Iron-59 1.89E-01 4.57E+00 2.64E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Lanthanum-140 5.41E-01 4.03E+00 2.37E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Manganese-54 3.70E-01 2.02E+00 1.36E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Nickel-63 -8.21E+00 2.28E+01 1.32E+01 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Niobium-95 2.59E+00 2.59E+00 1.97E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Total Strontium 1.78E-01 1.77E+00 1.07E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Tritium 2.14E+02 2.82E+02 1.83E+02 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Zinc-65 4.83E-03 4.43E+00 2.92E+00 pCi/L GW1 Groundwater Monitoring Well 1(562871001) - GW 22-Nov-21 Zirconium-95 1.30E+00 4.08E+00 2.46E+00 pCi/L GW2 Groundwater Monitoring Well 2 GW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 BETA 1.37E+01 6.44E+00 4.82E+00 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Barium-140 -2.06E+00 6.36E+00 4.01E+00 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Cesium-134 9.54E-01 1.54E+00 9.64E-01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Cesium-137 -2.87E-01 1.40E+00 8.73E-01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Cobalt-58 -1.96E-01 1.38E+00 8.63E-01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Cobalt-60 -1.73E-01 1.53E+00 9.23E-01 pCi/L 199

Groundwater Sample Results GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Iodine-131 -6.07E-01 2.44E+00 1.46E+00 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Iron-55 -1.60E+01 1.04E+02 6.58E+01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Iron-59 4.91E-01 2.89E+00 1.66E+00 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Lanthanum-140 -4.87E-03 2.24E+00 1.34E+00 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Manganese-54 -3.34E-01 1.39E+00 8.91E-01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Nickel-63 -7.21E+00 3.23E+01 1.90E+01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Niobium-95 5.11E-01 1.48E+00 9.89E-01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Total Strontium 5.96E-02 1.14E+00 6.87E-01 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Tritium 3.42E+01 2.65E+02 1.59E+02 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Zinc-65 7.90E-02 2.60E+00 1.71E+00 pCi/L GW2 Groundwater Monitoring Well 2(534813002) - GW 9-Feb-21 Zirconium-95 -1.56E-01 2.52E+00 1.54E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 BETA 1.07E+01 5.69E+00 4.21E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Barium-140 6.72E+00 8.47E+00 5.98E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Cesium-134 1.71E-01 1.72E+00 9.92E-01 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Cesium-137 1.46E-01 1.51E+00 1.03E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Cobalt-58 1.50E-02 1.67E+00 9.73E-01 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Cobalt-60 -1.46E+00 1.48E+00 1.25E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Iodine-131 -6.94E-01 3.11E+00 1.89E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Iron-55 1.02E+01 1.29E+02 9.59E+01 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Iron-59 -4.79E-02 3.09E+00 1.85E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Lanthanum-140 -1.09E+00 3.04E+00 1.95E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Manganese-54 2.79E-01 1.52E+00 8.76E-01 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Nickel-63 8.83E+00 2.24E+01 1.40E+01 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Niobium-95 1.74E+00 1.83E+00 1.25E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Total Strontium 3.13E-01 1.19E+00 7.39E-01 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Tritium 7.44E+00 3.31E+02 1.98E+02 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Zinc-65 1.54E-02 3.09E+00 2.11E+00 pCi/L GW2 Groundwater Monitoring Well 2(539120002) - GW 26-Apr-21 Zirconium-95 -2.57E-01 2.71E+00 1.60E+00 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 BETA 6.38E+00 5.16E+00 3.49E+00 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Barium-140 -5.27E+00 7.20E+00 5.14E+00 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Cesium-134 -3.84E-01 1.53E+00 9.66E-01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Cesium-137 1.00E-01 1.46E+00 8.54E-01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Cobalt-58 -2.17E-02 1.50E+00 8.99E-01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Cobalt-60 -8.37E-02 1.42E+00 8.36E-01 pCi/L 200

Groundwater Sample Results GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Iodine-131 1.10E+00 3.10E+00 1.95E+00 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Iron-55 -1.50E+01 1.09E+02 8.03E+01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Iron-59 -4.96E-01 2.81E+00 1.80E+00 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Lanthanum-140 -2.68E-01 2.44E+00 1.48E+00 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Manganese-54 -2.99E-01 1.30E+00 8.19E-01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Nickel-63 4.13E+00 2.84E+01 1.71E+01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Niobium-95 3.82E-01 1.52E+00 9.84E-01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Total Strontium -8.93E-02 4.94E-01 2.86E-01 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Tritium 1.19E+02 2.43E+02 1.52E+02 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Zinc-65 -4.48E-01 2.85E+00 2.05E+00 pCi/L GW2 Groundwater Monitoring Well 2(557834002) - GW 28-Sep-21 Zirconium-95 -5.68E-01 2.57E+00 1.60E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 BETA 9.15E+00 6.92E+00 4.66E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Barium-140 -1.25E+01 1.04E+01 1.11E+01 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Cesium-134 2.84E-01 2.12E+00 1.29E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Cesium-137 -1.94E-01 2.10E+00 1.30E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Cobalt-58 -6.01E-01 1.80E+00 1.12E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Cobalt-60 -2.44E-01 2.30E+00 1.41E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Iodine-131 -4.49E+00 3.39E+00 3.61E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Iron-55 2.43E+00 7.86E+01 5.41E+01 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Iron-59 -4.51E-01 3.64E+00 2.20E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Lanthanum-140 -3.09E-02 3.15E+00 1.92E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Manganese-54 -9.04E-01 2.03E+00 2.32E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Nickel-63 -9.00E+00 2.69E+01 1.56E+01 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Niobium-95 1.39E+00 2.19E+00 1.51E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Total Strontium -1.44E-01 1.09E+00 6.32E-01 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Tritium -3.88E+01 2.91E+02 1.71E+02 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Zinc-65 -6.79E-01 3.78E+00 2.65E+00 pCi/L GW2 Groundwater Monitoring Well 2(562871002) - GW 22-Nov-21 Zirconium-95 -8.40E-01 3.28E+00 2.14E+00 pCi/L OW1 Observation Well 01 GW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units OW1 Observation Well 01(534816002) - GW 9-Feb-21 BETA 1.11E+01 5.11E+00 3.91E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Barium-140 I I 2.32E+00 8.39E+00 5.47E+00 pCi/L 201

Groundwater Sample Results OW1 Observation Well 01(534816002) - GW 9-Feb-21 Cesium-134 -7.55E-01 1.71E+00 1.14E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Cesium-137 1.77E+00 1.77E+00 1.55E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Cobalt-58 3.21E-01 1.80E+00 1.21E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Cobalt-60 2.05E-01 1.75E+00 1.01E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Iodine-131 1.28E-01 3.19E+00 1.83E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Iron-55 1.98E+01 9.91E+01 6.50E+01 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Iron-59 -9.82E-01 3.32E+00 2.18E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Lanthanum-140 1.67E+00 3.22E+00 2.85E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Manganese-54 -5.31E-02 1.76E+00 1.20E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Nickel-63 -1.22E+00 2.83E+01 1.68E+01 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Niobium-95 1.97E+00 1.97E+00 1.45E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Total Strontium 4.90E-01 9.06E-01 6.05E-01 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Tritium 5.46E+02 2.76E+02 2.15E+02 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Zinc-65 1.07E+00 3.77E+00 2.42E+00 pCi/L OW1 Observation Well 01(534816002) - GW 9-Feb-21 Zirconium-95 7.29E-01 3.12E+00 1.86E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 BETA 1.14E+01 6.73E+00 4.71E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Barium-140 7.25E-01 9.46E+00 5.55E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Cesium-134 6.29E-01 1.90E+00 1.25E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Cesium-137 2.36E-01 1.93E+00 1.14E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Cobalt-58 7.70E-01 1.83E+00 1.21E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Cobalt-60 3.75E-01 1.99E+00 1.14E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Iodine-131 -7.21E-01 3.65E+00 2.16E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Iron-55 -1.08E+01 1.27E+02 9.38E+01 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Iron-59 -6.22E-01 3.16E+00 2.18E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Lanthanum-140 -2.88E-02 3.20E+00 1.91E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Manganese-54 5.76E-01 1.05E+00 1.31E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Nickel-63 1.93E+01 2.81E+01 1.82E+01 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Niobium-95 -4.24E-01 1.82E+00 1.29E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Total Strontium -9.84E-01 1.43E+00 7.88E-01 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Tritium 5.34E+02 3.36E+02 2.51E+02 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Zinc-65 -4.86E-02 3.80E+00 2.50E+00 pCi/L OW1 Observation Well 01(539120001) - GW 26-Apr-21 Zirconium-95 -4.12E-01 3.29E+00 2.03E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 BETA 2.75E+00 6.40E+00 3.93E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Barium-140 -1.65E+00 7.82E+00 4.91E+00 pCi/L 202

Groundwater Sample Results OW1 Observation Well 01(557834003) - GW 28-Sep-21 Cesium-134 1.21E+00 1.76E+00 1.09E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Cesium-137 9.47E-02 1.48E+00 9.03E-01 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Cobalt-58 7.06E-01 1.41E+00 9.47E-01 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Cobalt-60 -1.41E+00 1.87E+00 1.73E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Iodine-131 -3.15E-02 3.00E+00 1.77E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Iron-55 -1.87E+01 1.10E+02 8.10E+01 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Iron-59 -2.17E-01 2.82E+00 1.71E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Lanthanum-140 7.16E-01 2.82E+00 1.61E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Manganese-54 -3.89E-01 1.43E+00 8.79E-01 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Nickel-63 9.44E+00 2.86E+01 1.76E+01 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Niobium-95 -4.15E-01 1.59E+00 9.69E-01 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Total Strontium 1.95E-02 6.25E-01 3.74E-01 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Tritium 8.87E+02 2.55E+02 2.55E+02 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Zinc-65 3.79E-01 3.19E+00 2.14E+00 pCi/L OW1 Observation Well 01(557834003) - GW 28-Sep-21 Zirconium-95 3.82E-01 2.83E+00 1.62E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 BETA 1.72E+00 3.78E+00 2.36E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Barium-140 -4.31E-01 9.74E+00 5.77E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Cesium-134 1.06E+00 2.19E+00 1.30E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Cesium-137 -2.37E+00 1.99E+00 2.94E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Cobalt-58 -3.44E-01 1.99E+00 1.20E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Cobalt-60 -9.24E-01 2.03E+00 1.35E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Iodine-131 -7.19E-01 3.41E+00 2.14E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Iron-55 6.60E-01 7.67E+01 5.26E+01 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Iron-59 -3.24E+00 4.17E+00 5.50E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Lanthanum-140 4.35E-02 3.81E+00 2.30E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Manganese-54 -6.17E-02 2.08E+00 1.22E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Nickel-63 9.51E+00 2.93E+01 1.80E+01 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Niobium-95 4.18E-01 2.32E+00 1.34E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Total Strontium -5.42E-01 1.44E+00 7.99E-01 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Tritium 4.80E+02 3.35E+02 2.40E+02 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Zinc-65 -1.18E+00 4.15E+00 3.12E+00 pCi/L OW1 Observation Well 01(562871004) - GW 22-Nov-21 Zirconium-95 1.38E+00 3.91E+00 2.27E+00 pCi/L 203

Meat Sample Results BCM Blanchard Cow Meat MT Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units BCM Blanchard Cow Meat(532350001) - MT 21-Jan-21 Cesium-134 1.15E+00 5.01E+00 2.94E+00 pCi/kg BCM Blanchard Cow Meat(532350001) - MT 21-Jan-21 Cesium-137 -7.15E-01 4.77E+00 2.92E+00 pCi/kg BCM Blanchard Cow Meat(532350001) - MT 21-Jan-21 Cobalt-58 2.22E+00 4.50E+00 2.88E+00 pCi/kg BCM Blanchard Cow Meat(532350001) - MT 21-Jan-21 Cobalt-60 9.23E-01 5.88E+00 3.36E+00 pCi/kg BCM Blanchard Cow Meat(532350001) - MT 21-Jan-21 Iodine-131 -1.95E-01 5.71E+00 3.62E+00 pCi/kg BCM Blanchard Cow Meat(532350001) - MT 21-Jan-21 Total Strontium 2.64E+01 6.85E+01 4.38E+01 pCi/kg BCM Blanchard Cow Meat(541234001) - MT 22-Apr-21 Cesium-134 -3.72E-01 3.00E+00 1.89E+00 pCi/kg BCM Blanchard Cow Meat(541234001) - MT 22-Apr-21 Cesium-137 1.07E+00 3.31E+00 3.87E+00 pCi/kg BCM Blanchard Cow Meat(541234001) - MT 22-Apr-21 Cobalt-58 -1.05E-01 3.00E+00 2.09E+00 pCi/kg BCM Blanchard Cow Meat(541234001) - MT 22-Apr-21 Cobalt-60 -3.30E-01 3.72E+00 2.54E+00 pCi/kg BCM Blanchard Cow Meat(541234001) - MT 22-Apr-21 Iodine-131 -8.06E-01 4.19E+00 2.50E+00 pCi/kg BCM Blanchard Cow Meat(541234001) - MT 22-Apr-21 Total Strontium 3.10E+01 7.18E+01 4.69E+01 pCi/kg BCM Blanchard Cow Meat(556928002) - MT 23-Sep-21 Cesium-134 -1.77E+00 3.63E+00 2.53E+00 pCi/kg BCM Blanchard Cow Meat(556928002) - MT 23-Sep-21 Cesium-137 2.51E+00 4.47E+00 2.74E+00 pCi/kg BCM Blanchard Cow Meat(556928002) - MT 23-Sep-21 Cobalt-58 -1.12E+00 3.74E+00 2.43E+00 pCi/kg BCM Blanchard Cow Meat(556928002) - MT 23-Sep-21 Cobalt-60 3.45E-01 4.83E+00 2.81E+00 pCi/kg BCM Blanchard Cow Meat(556928002) - MT 23-Sep-21 Iodine-131 -1.26E+00 7.07E+00 4.18E+00 pCi/kg BCM Blanchard Cow Meat(556928002) - MT 23-Sep-21 Total Strontium 7.42E+00 8.83E+01 5.41E+01 pCi/kg BCM Blanchard Cow Meat(562872001) - MT 18-Nov-21 Cesium-134 -8.70E-01 4.76E+00 2.99E+00 pCi/kg BCM Blanchard Cow Meat(562872001) - MT 18-Nov-21 Cesium-137 1.72E+00 4.23E+00 2.54E+00 pCi/kg BCM Blanchard Cow Meat(562872001) - MT 18-Nov-21 Cobalt-58 -1.02E+00 4.17E+00 3.01E+00 pCi/kg BCM Blanchard Cow Meat(562872001) - MT 18-Nov-21 Cobalt-60 -7.24E-01 4.32E+00 2.64E+00 pCi/kg BCM Blanchard Cow Meat(562872001) - MT 18-Nov-21 Iodine-131 6.51E-01 1.23E+01 7.06E+00 pCi/kg BCM Blanchard Cow Meat(562872001) - MT 18-Nov-21 Total Strontium -3.27E+00 9.13E+01 5.42E+01 pCi/kg 204

Meat Sample Results CCM Control Cow Meat MT Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units CCM Control Cow Meat(534515001) - MT 10-Feb-21 Cesium-134 1.08E+00 4.62E+00 2.66E+00 pCi/kg CCM Control Cow Meat(534515001) - MT 10-Feb-21 Cesium-137 1.07E+00 4.02E+00 2.29E+00 pCi/kg CCM Control Cow Meat(534515001) - MT 10-Feb-21 Cobalt-58 -7.42E-01 4.23E+00 2.56E+00 pCi/kg CCM Control Cow Meat(534515001) - MT 10-Feb-21 Cobalt-60 -4.58E-01 4.57E+00 2.84E+00 pCi/kg CCM Control Cow Meat(534515001) - MT 10-Feb-21 Iodine-131 6.95E-01 6.69E+00 3.95E+00 pCi/kg CCM Control Cow Meat(534515001) - MT 10-Feb-21 Total Strontium 4.91E+01 1.02E+02 6.66E+01 pCi/kg CCM Control Cow Meat(535062001) - MT 16-Feb-21 Cesium-134 -7.51E-01 2.97E+00 1.94E+00 pCi/kg CCM Control Cow Meat(535062001) - MT 16-Feb-21 Cesium-137 1.88E+00 2.95E+00 1.86E+00 pCi/kg CCM Control Cow Meat(535062001) - MT 16-Feb-21 Cobalt-58 3.07E-01 2.91E+00 1.78E+00 pCi/kg CCM Control Cow Meat(535062001) - MT 16-Feb-21 Cobalt-60 -6.19E-01 3.49E+00 2.54E+00 pCi/kg CCM Control Cow Meat(535062001) - MT 16-Feb-21 Iodine-131 6.73E-01 4.00E+00 2.34E+00 pCi/kg CCM Control Cow Meat(535062001) - MT 16-Feb-21 Total Strontium -6.17E+01 1.05E+02 5.54E+01 pCi/kg CCM Control Cow Meat(541234002) - MT 22-Apr-21 Cesium-134 3.17E-01 3.79E+00 2.18E+00 pCi/kg CCM Control Cow Meat(541234002) - MT 22-Apr-21 Cesium-137 3.79E+00 4.20E+00 2.89E+00 pCi/kg CCM Control Cow Meat(541234002) - MT 22-Apr-21 Cobalt-58 -8.75E-01 3.56E+00 2.17E+00 pCi/kg CCM Control Cow Meat(541234002) - MT 22-Apr-21 Cobalt-60 1.29E+00 4.00E+00 2.33E+00 pCi/kg CCM Control Cow Meat(541234002) - MT 22-Apr-21 Iodine-131 1.04E+00 5.18E+00 3.08E+00 pCi/kg CCM Control Cow Meat(541234002) - MT 22-Apr-21 Total Strontium -2.20E+01 8.43E+01 4.78E+01 pCi/kg CCM Control Cow Meat(556928003) - MT 27-Sep-21 Cesium-134 -9.24E-01 4.17E+00 2.51E+00 pCi/kg CCM Control Cow Meat(556928003) - MT 27-Sep-21 Cesium-137 -5.02E-01 3.70E+00 2.32E+00 pCi/kg CCM Control Cow Meat(556928003) - MT 27-Sep-21 Cobalt-58 -4.35E-01 3.40E+00 2.01E+00 pCi/kg CCM Control Cow Meat(556928003) - MT 27-Sep-21 Cobalt-60 1.18E+00 4.88E+00 2.87E+00 pCi/kg CCM Control Cow Meat(556928003) - MT 27-Sep-21 Iodine-131 -8.03E-01 4.26E+00 2.56E+00 pCi/kg CCM Control Cow Meat(556928003) - MT 27-Sep-21 Total Strontium -1.62E+01 9.17E+01 5.18E+01 pCi/kg CCM Control Cow Meat(562872002) - MT 23-Nov-21 Cesium-134 -1.64E+00 4.70E+00 3.17E+00 pCi/kg CCM Control Cow Meat(562872002) - MT 23-Nov-21 Cesium-137 -1.99E+00 4.48E+00 3.05E+00 pCi/kg CCM Control Cow Meat(562872002) - MT 23-Nov-21 Cobalt-58 -1.46E+00 4.85E+00 2.99E+00 pCi/kg CCM Control Cow Meat(562872002) - MT 23-Nov-21 Cobalt-60 7.77E-01 6.18E+00 3.64E+00 pCi/kg CCM Control Cow Meat(562872002) - MT 23-Nov-21 Iodine-131 -3.19E+00 7.85E+00 6.20E+00 pCi/kg CCM Control Cow Meat(562872002) - MT 23-Nov-21 Total Strontium -3.41E+01 6.83E+01 3.73E+01 pCi/kg 205

Milk Sample Results 5F2 Cal Poly Farm MK Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 5F2 Cal Poly Farm(531668001) - MK 12-Jan-21 Barium-140 -2.87E+00 8.63E+00 5.49E+00 pCi/L 5F2 Cal Poly Farm(531668001) - MK 12-Jan-21 Cesium-134 1.02E+00 2.11E+00 1.31E+00 pCi/L 5F2 Cal Poly Farm(531668001) - MK 12-Jan-21 Cesium-137 1.81E+00 1.81E+00 1.90E+00 pCi/L 5F2 Cal Poly Farm(531668001) - MK 12-Jan-21 Iodine-131 -1.16E-01 8.64E-01 5.06E-01 pCi/L 5F2 Cal Poly Farm(531668001) - MK 12-Jan-21 Lanthanum-140 5.09E-01 2.88E+00 1.71E+00 pCi/L 5F2 Cal Poly Farm(531668001) - MK 12-Jan-21 Total Strontium 4.98E-01 6.72E-01 4.49E-01 pCi/L 5F2 Cal Poly Farm(533663001) - MK 1-Feb-21 Barium-140 -4.89E-02 9.71E+00 5.62E+00 pCi/L 5F2 Cal Poly Farm(533663001) - MK 1-Feb-21 Cesium-134 -1.22E-01 2.10E+00 1.26E+00 pCi/L 5F2 Cal Poly Farm(533663001) - MK 1-Feb-21 Cesium-137 1.49E+00 1.90E+00 1.58E+00 pCi/L 5F2 Cal Poly Farm(533663001) - MK 1-Feb-21 Iodine-131 3.37E-01 6.84E-01 4.16E-01 pCi/L 5F2 Cal Poly Farm(533663001) - MK 1-Feb-21 Lanthanum-140 -2.14E-01 2.87E+00 1.73E+00 pCi/L 5F2 Cal Poly Farm(533663001) - MK 1-Feb-21 Total Strontium -4.60E-01 1.22E+00 6.84E-01 pCi/L 5F2 Cal Poly Farm(535432001) - MK 8-Mar-21 Barium-140 -2.41E+00 1.29E+01 7.94E+00 pCi/L 5F2 Cal Poly Farm(535432001) - MK 8-Mar-21 Cesium-134 4.11E-01 2.11E+00 1.28E+00 pCi/L 5F2 Cal Poly Farm(535432001) - MK 8-Mar-21 Cesium-137 6.31E-01 2.03E+00 1.22E+00 pCi/L 5F2 Cal Poly Farm(535432001) - MK 8-Mar-21 Iodine-131 -6.03E-02 4.51E-01 2.64E-01 pCi/L 5F2 Cal Poly Farm(535432001) - MK 8-Mar-21 Lanthanum-140 1.58E-01 4.42E+00 2.67E+00 pCi/L 5F2 Cal Poly Farm(535432001) - MK 8-Mar-21 Total Strontium 8.64E-01 8.93E-01 6.23E-01 pCi/L 5F2 Cal Poly Farm(540196001) - MK 13-Apr-21 Barium-140 1.45E+00 1.13E+01 6.66E+00 pCi/L 5F2 Cal Poly Farm(540196001) - MK 13-Apr-21 Cesium-134 1.47E+00 1.90E+00 1.26E+00 pCi/L 5F2 Cal Poly Farm(540196001) - MK 13-Apr-21 Cesium-137 -6.41E-01 1.58E+00 1.66E+00 pCi/L 5F2 Cal Poly Farm(540196001) - MK 13-Apr-21 Iodine-131 9.74E-02 6.94E-01 4.11E-01 pCi/L 5F2 Cal Poly Farm(540196001) - MK 13-Apr-21 Lanthanum-140 4.08E-01 3.68E+00 2.18E+00 pCi/L 5F2 Cal Poly Farm(540196001) - MK 13-Apr-21 Total Strontium 1.10E+00 1.72E+00 1.13E+00 pCi/L 5F2 Cal Poly Farm(541544001) - MK 4-May-21 Barium-140 3.72E+00 7.44E+00 6.16E+00 pCi/L 5F2 Cal Poly Farm(541544001) - MK 4-May-21 Cesium-134 2.89E-01 1.98E+00 1.47E+00 pCi/L 5F2 Cal Poly Farm(541544001) - MK 4-May-21 Cesium-137 -1.07E+00 2.07E+00 2.07E+00 pCi/L 5F2 Cal Poly Farm(541544001) - MK 4-May-21 Iodine-131 -5.51E-02 4.12E-01 2.47E-01 pCi/L 5F2 Cal Poly Farm(541544001) - MK 4-May-21 Lanthanum-140 -2.90E-01 2.47E+00 1.54E+00 pCi/L 5F2 Cal Poly Farm(541544001) - MK 4-May-21 Total Strontium 9.36E-01 1.99E+00 1.27E+00 pCi/L 5F2 Cal Poly Farm(547172001) - MK 14-Jun-21 Barium-140 -2.30E+00 9.51E+00 5.98E+00 pCi/L 206

Milk Sample Results 5F2 Cal Poly Farm(547172001) - MK 14-Jun-21 Cesium-134 8.33E-01 2.18E+00 1.33E+00 pCi/L 5F2 Cal Poly Farm(547172001) - MK 14-Jun-21 Cesium-137 1.45E-01 2.03E+00 1.23E+00 pCi/L 5F2 Cal Poly Farm(547172001) - MK 14-Jun-21 Iodine-131 -2.85E-02 6.00E-01 3.49E-01 pCi/L 5F2 Cal Poly Farm(547172001) - MK 14-Jun-21 Lanthanum-140 -5.44E-01 2.79E+00 1.73E+00 pCi/L 5F2 Cal Poly Farm(547172001) - MK 14-Jun-21 Total Strontium -6.84E-01 1.06E+00 5.76E-01 pCi/L 5F2 Cal Poly Farm(549377001) - MK 13-Jul-21 Barium-140 -1.61E+00 7.86E+00 4.96E+00 pCi/L 5F2 Cal Poly Farm(549377001) - MK 13-Jul-21 Cesium-134 -2.21E-01 1.96E+00 1.15E+00 pCi/L 5F2 Cal Poly Farm(549377001) - MK 13-Jul-21 Cesium-137 -8.50E-02 1.92E+00 1.19E+00 pCi/L 5F2 Cal Poly Farm(549377001) - MK 13-Jul-21 Iodine-131 3.12E-01 7.17E-01 4.36E-01 pCi/L 5F2 Cal Poly Farm(549377001) - MK 13-Jul-21 Lanthanum-140 1.72E-01 2.67E+00 1.59E+00 pCi/L 5F2 Cal Poly Farm(549377001) - MK 13-Jul-21 Total Strontium 6.49E-01 1.48E+00 9.46E-01 pCi/L 5F2 Cal Poly Farm(551238001) - MK 2-Aug-21 Barium-140 -3.52E+00 8.44E+00 5.37E+00 pCi/L 5F2 Cal Poly Farm(551238001) - MK 2-Aug-21 Cesium-134 3.52E-02 1.82E+00 1.09E+00 pCi/L 5F2 Cal Poly Farm(551238001) - MK 2-Aug-21 Cesium-137 -2.23E-01 1.55E+00 9.36E-01 pCi/L 5F2 Cal Poly Farm(551238001) - MK 2-Aug-21 Iodine-131 1.30E-01 6.71E-01 3.98E-01 pCi/L 5F2 Cal Poly Farm(551238001) - MK 2-Aug-21 Lanthanum-140 -5.90E-01 2.34E+00 1.48E+00 pCi/L 5F2 Cal Poly Farm(551238001) - MK 2-Aug-21 Total Strontium 1.11E-01 1.27E+00 7.73E-01 pCi/L 5F2 Cal Poly Farm(555307001) - MK 7-Sep-21 Barium-140 5.10E-01 9.24E+00 5.40E+00 pCi/L 5F2 Cal Poly Farm(555307001) - MK 7-Sep-21 Cesium-134 7.89E-01 1.75E+00 1.07E+00 pCi/L 5F2 Cal Poly Farm(555307001) - MK 7-Sep-21 Cesium-137 -8.56E-01 1.63E+00 1.57E+00 pCi/L 5F2 Cal Poly Farm(555307001) - MK 7-Sep-21 Iodine-131 -6.10E-01 7.88E-01 7.49E-01 pCi/L 5F2 Cal Poly Farm(555307001) - MK 7-Sep-21 Lanthanum-140 -5.52E-01 2.54E+00 1.58E+00 pCi/L 5F2 Cal Poly Farm(555307001) - MK 7-Sep-21 Total Strontium -8.11E-01 1.15E+00 6.32E-01 pCi/L 5F2 Cal Poly Farm(558466001) - MK 12-Oct-21 Barium-140 -3.70E+00 7.20E+00 4.98E+00 pCi/L 5F2 Cal Poly Farm(558466001) - MK 12-Oct-21 Cesium-134 -1.91E-01 1.77E+00 1.08E+00 pCi/L 5F2 Cal Poly Farm(558466001) - MK 12-Oct-21 Cesium-137 3.49E-01 1.56E+00 1.01E+00 pCi/L 5F2 Cal Poly Farm(558466001) - MK 12-Oct-21 Iodine-131 2.40E-02 4.74E-01 2.73E-01 pCi/L 5F2 Cal Poly Farm(558466001) - MK 12-Oct-21 Lanthanum-140 -1.35E+00 2.32E+00 1.65E+00 pCi/L 5F2 Cal Poly Farm(558466001) - MK 12-Oct-21 Total Strontium 8.87E-01 1.02E+00 7.25E-01 pCi/L 5F2 Cal Poly Farm(562131001) - MK 16-Nov-21 Barium-140 -2.63E+00 8.24E+00 5.21E+00 pCi/L 5F2 Cal Poly Farm(562131001) - MK 16-Nov-21 Cesium-134 -1.83E-01 2.62E+00 1.61E+00 pCi/L 5F2 Cal Poly Farm(562131001) - MK 16-Nov-21 Cesium-137 4.19E-02 2.47E+00 1.47E+00 pCi/L 5F2 Cal Poly Farm(562131001) - MK 16-Nov-21 Iodine-131 1.67E-01 5.91E-01 3.45E-01 pCi/L 5F2 Cal Poly Farm(562131001) - MK 16-Nov-21 Lanthanum-140 -3.27E-01 2.65E+00 1.64E+00 pCi/L 207

Milk Sample Results 5F2 Cal Poly Farm(562131001) - MK 16-Nov-21 Total Strontium 6.07E-01 1.48E+00 9.38E-01 pCi/L 5F2 Cal Poly Farm(564005001) - MK 6-Dec-21 Barium-140 -9.51E+00 1.37E+01 1.38E+01 pCi/L 5F2 Cal Poly Farm(564005001) - MK 6-Dec-21 Cesium-134 5.95E-01 2.72E+00 1.61E+00 pCi/L 5F2 Cal Poly Farm(564005001) - MK 6-Dec-21 Cesium-137 -3.41E-01 2.29E+00 1.37E+00 pCi/L 5F2 Cal Poly Farm(564005001) - MK 6-Dec-21 Iodine-131 4.69E-01 6.80E-01 5.26E-01 pCi/L 5F2 Cal Poly Farm(564005001) - MK 6-Dec-21 Lanthanum-140 4.40E-01 3.98E+00 2.36E+00 pCi/L 5F2 Cal Poly Farm(564005001) - MK 6-Dec-21 Total Strontium -1.17E+00 1.72E+00 8.64E-01 pCi/L 208

Mussel Sample Results 7C2 Rattlesnake Canyon IM Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C2 Rattlesnake Canyon(531667003) - IM 11-Jan-21 Cesium-134 -4.95E+00 1.76E+01 1.33E+01 pCi/kg 7C2 Rattlesnake Canyon(531667003) - IM 11-Jan-21 Cesium-137 1.05E+01 2.01E+01 1.23E+01 pCi/kg 7C2 Rattlesnake Canyon(531667003) - IM 11-Jan-21 Cobalt-58 5.94E+00 1.88E+01 1.14E+01 pCi/kg 7C2 Rattlesnake Canyon(531667003) - IM 11-Jan-21 Cobalt-60 -9.20E+00 1.90E+01 1.35E+01 pCi/kg 7C2 Rattlesnake Canyon(531667003) - IM 11-Jan-21 Iron-59 1.09E+01 4.21E+01 2.44E+01 pCi/kg 7C2 Rattlesnake Canyon(531667003) - IM 11-Jan-21 Manganese-54 -6.07E+00 1.77E+01 1.21E+01 pCi/kg 7C2 Rattlesnake Canyon(531667003) - IM 11-Jan-21 Zinc-65 -7.44E-01 4.57E+01 2.72E+01 pCi/kg 7C2 Rattlesnake Canyon(541241004) - IM 21-Apr-21 Cesium-134 -5.75E+00 2.11E+01 1.34E+01 pCi/kg 7C2 Rattlesnake Canyon(541241004) - IM 21-Apr-21 Cesium-137 1.77E+01 2.69E+01 1.73E+01 pCi/kg 7C2 Rattlesnake Canyon(541241004) - IM 21-Apr-21 Cobalt-58 2.68E+00 2.32E+01 1.35E+01 pCi/kg 7C2 Rattlesnake Canyon(541241004) - IM 21-Apr-21 Cobalt-60 -1.58E+00 2.32E+01 1.69E+01 pCi/kg 7C2 Rattlesnake Canyon(541241004) - IM 21-Apr-21 Iron-59 1.24E+01 5.14E+01 3.04E+01 pCi/kg 7C2 Rattlesnake Canyon(541241004) - IM 21-Apr-21 Manganese-54 7.42E+00 2.56E+01 1.67E+01 pCi/kg 7C2 Rattlesnake Canyon(541241004) - IM 21-Apr-21 Zinc-65 -1.14E+01 5.26E+01 3.38E+01 pCi/kg 7C2 Rattlesnake Canyon(555287002) - IM 26-Aug-21 Cesium-134 1.50E+00 2.36E+01 1.43E+01 pCi/kg 7C2 Rattlesnake Canyon(555287002) - IM 26-Aug-21 Cesium-137 -1.42E+01 2.60E+01 1.80E+01 pCi/kg 7C2 Rattlesnake Canyon(555287002) - IM 26-Aug-21 Cobalt-58 -6.49E-01 2.10E+01 1.30E+01 pCi/kg 7C2 Rattlesnake Canyon(555287002) - IM 26-Aug-21 Cobalt-60 -2.59E+00 2.12E+01 1.30E+01 pCi/kg 7C2 Rattlesnake Canyon(555287002) - IM 26-Aug-21 Iron-59 1.56E+01 5.00E+01 2.85E+01 pCi/kg 7C2 Rattlesnake Canyon(555287002) - IM 26-Aug-21 Manganese-54 -2.92E+00 2.21E+01 1.39E+01 pCi/kg 7C2 Rattlesnake Canyon(555287002) - IM 26-Aug-21 Zinc-65 1.27E+01 4.19E+01 2.62E+01 pCi/kg 7C2 Rattlesnake Canyon(563364003) - IM 30-Nov-21 Cesium-134 -8.79E-01 1.81E+01 1.12E+01 pCi/kg 7C2 Rattlesnake Canyon(563364003) - IM 30-Nov-21 Cesium-137 4.09E+00 1.73E+01 1.03E+01 pCi/kg 7C2 Rattlesnake Canyon(563364003) - IM 30-Nov-21 Cobalt-58 -4.36E+00 1.50E+01 1.12E+01 pCi/kg 7C2 Rattlesnake Canyon(563364003) - IM 30-Nov-21 Cobalt-60 6.69E+00 1.61E+01 9.14E+00 pCi/kg 7C2 Rattlesnake Canyon(563364003) - IM 30-Nov-21 Iron-59 -2.23E+00 3.20E+01 1.90E+01 pCi/kg 7C2 Rattlesnake Canyon(563364003) - IM 30-Nov-21 Manganese-54 4.03E+00 1.60E+01 9.60E+00 pCi/kg 7C2 Rattlesnake Canyon(563364003) - IM 30-Nov-21 Zinc-65 -6.70E+00 3.32E+01 2.04E+01 pCi/kg DCM Diablo Cove Marine IM 209

Mussel Sample Results Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DCM Diablo Cove Marine(531667001) - IM 11-Jan-21 Cesium-134 8.02E+00 2.07E+01 1.36E+01 pCi/kg DCM Diablo Cove Marine(531667001) - IM 11-Jan-21 Cesium-137 -1.69E+00 1.81E+01 1.08E+01 pCi/kg DCM Diablo Cove Marine(531667001) - IM 11-Jan-21 Cobalt-58 1.25E+01 1.79E+01 9.84E+00 pCi/kg DCM Diablo Cove Marine(531667001) - IM 11-Jan-21 Cobalt-60 -2.96E+00 2.01E+01 1.23E+01 pCi/kg DCM Diablo Cove Marine(531667001) - IM 11-Jan-21 Iron-59 -7.47E+00 3.44E+01 2.23E+01 pCi/kg DCM Diablo Cove Marine(531667001) - IM 11-Jan-21 Manganese-54 3.38E+00 1.91E+01 1.13E+01 pCi/kg DCM Diablo Cove Marine(531667001) - IM 11-Jan-21 Zinc-65 -1.93E+01 4.14E+01 2.89E+01 pCi/kg DCM Diablo Cove Marine(541241001) - IM 21-Apr-21 Cesium-134 3.78E+00 2.20E+01 1.33E+01 pCi/kg DCM Diablo Cove Marine(541241001) - IM 21-Apr-21 Cesium-137 1.11E+01 1.81E+01 2.34E+01 pCi/kg DCM Diablo Cove Marine(541241001) - IM 21-Apr-21 Cobalt-58 -3.25E+00 2.01E+01 1.30E+01 pCi/kg DCM Diablo Cove Marine(541241001) - IM 21-Apr-21 Cobalt-60 5.30E+00 2.75E+01 1.61E+01 pCi/kg DCM Diablo Cove Marine(541241001) - IM 21-Apr-21 Iron-59 -1.03E+01 4.20E+01 2.68E+01 pCi/kg DCM Diablo Cove Marine(541241001) - IM 21-Apr-21 Manganese-54 -7.55E+00 1.57E+01 1.31E+01 pCi/kg DCM Diablo Cove Marine(541241001) - IM 21-Apr-21 Zinc-65 3.79E+01 4.76E+01 4.66E+01 pCi/kg DCM Diablo Cove Marine(555287001) - IM 26-Aug-21 Cesium-134 3.52E+00 2.13E+01 1.29E+01 pCi/kg DCM Diablo Cove Marine(555287001) - IM 26-Aug-21 Cesium-137 -3.67E+00 2.08E+01 1.70E+01 pCi/kg DCM Diablo Cove Marine(555287001) - IM 26-Aug-21 Cobalt-58 -1.52E+01 1.92E+01 1.94E+01 pCi/kg DCM Diablo Cove Marine(555287001) - IM 26-Aug-21 Cobalt-60 9.47E-01 1.98E+01 1.16E+01 pCi/kg DCM Diablo Cove Marine(555287001) - IM 26-Aug-21 Iron-59 9.60E+00 4.38E+01 2.49E+01 pCi/kg DCM Diablo Cove Marine(555287001) - IM 26-Aug-21 Manganese-54 -1.81E+01 1.89E+01 1.86E+01 pCi/kg DCM Diablo Cove Marine(555287001) - IM 26-Aug-21 Zinc-65 3.28E+01 3.54E+01 2.29E+01 pCi/kg DCM Diablo Cove Marine(563364002) - IM 30-Nov-21 Cesium-134 -2.31E+00 2.20E+01 1.54E+01 pCi/kg DCM Diablo Cove Marine(563364002) - IM 30-Nov-21 Cesium-137 2.30E+00 2.01E+01 1.20E+01 pCi/kg DCM Diablo Cove Marine(563364002) - IM 30-Nov-21 Cobalt-58 4.00E+00 1.90E+01 1.14E+01 pCi/kg DCM Diablo Cove Marine(563364002) - IM 30-Nov-21 Cobalt-60 -1.12E+01 2.27E+01 2.12E+01 pCi/kg DCM Diablo Cove Marine(563364002) - IM 30-Nov-21 Iron-59 9.66E+00 4.34E+01 2.65E+01 pCi/kg DCM Diablo Cove Marine(563364002) - IM 30-Nov-21 Manganese-54 3.41E+00 2.08E+01 1.26E+01 pCi/kg DCM Diablo Cove Marine(563364002) - IM 30-Nov-21 Zinc-65 4.86E+00 4.42E+01 2.73E+01 pCi/kg PON Pacific Ocean North of Diablo Cove IM Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units PON Pacific Ocean North of Diablo Cove(534290001) - IM 8-Feb-21 Cesium-134 -3.19E+00 2.27E+01 1.42E+01 pCi/kg 210

Mussel Sample Results PON Pacific Ocean North of Diablo Cove(534290001) - IM 8-Feb-21 Cesium-137 -1.48E+00 2.01E+01 1.22E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(534290001) - IM 8-Feb-21 Cobalt-58 3.41E-01 1.87E+01 1.14E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(534290001) - IM 8-Feb-21 Cobalt-60 -1.43E+00 2.31E+01 1.57E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(534290001) - IM 8-Feb-21 Iron-59 -3.49E+00 3.82E+01 2.76E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(534290001) - IM 8-Feb-21 Manganese-54 3.04E+00 1.84E+01 1.22E+01 pCi/kg PON Pacific Ocean North of Diablo Cove(534290001) - IM 8-Feb-21 Zinc-65 -2.48E+01 3.69E+01 2.89E+01 pCi/kg POS Pacific Ocean South of Diablo Cove IM Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units POS Pacific Ocean South of Diablo Cove(531667004) - IM 11-Jan-21 Cesium-134 1.53E+01 1.67E+01 1.47E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(531667004) - IM 11-Jan-21 Cesium-137 6.01E-01 1.87E+01 1.13E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(531667004) - IM 11-Jan-21 Cobalt-58 -8.43E-01 1.64E+01 1.02E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(531667004) - IM 11-Jan-21 Cobalt-60 -4.64E+00 1.63E+01 1.07E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(531667004) - IM 11-Jan-21 Iron-59 -1.07E+01 3.36E+01 3.08E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(531667004) - IM 11-Jan-21 Manganese-54 1.11E+00 1.81E+01 1.11E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(531667004) - IM 11-Jan-21 Zinc-65 1.84E+01 4.29E+01 2.49E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(541241003) - IM 21-Apr-21 Cesium-134 -4.49E+00 1.92E+01 1.30E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(541241003) - IM 21-Apr-21 Cesium-137 1.44E+01 1.95E+01 1.30E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(541241003) - IM 21-Apr-21 Cobalt-58 4.66E+00 1.75E+01 1.06E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(541241003) - IM 21-Apr-21 Cobalt-60 8.57E+00 1.93E+01 1.30E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(541241003) - IM 21-Apr-21 Iron-59 -7.73E+00 3.48E+01 2.21E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(541241003) - IM 21-Apr-21 Manganese-54 -6.64E+00 1.73E+01 1.11E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(541241003) - IM 21-Apr-21 Zinc-65 1.20E+01 3.85E+01 2.66E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(555287003) - IM 26-Aug-21 Cesium-134 3.61E+00 2.29E+01 1.34E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(555287003) - IM 26-Aug-21 Cesium-137 1.00E+01 2.29E+01 1.35E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(555287003) - IM 26-Aug-21 Cobalt-58 -7.23E+00 1.94E+01 1.28E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(555287003) - IM 26-Aug-21 Cobalt-60 -2.68E+01 2.43E+01 2.45E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(555287003) - IM 26-Aug-21 Iron-59 3.30E+00 5.07E+01 3.06E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(555287003) - IM 26-Aug-21 Manganese-54 4.19E-01 2.23E+01 1.33E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(555287003) - IM 26-Aug-21 Zinc-65 1.96E+01 4.60E+01 3.98E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(563364001) - IM 30-Nov-21 Cesium-134 -9.39E+00 1.70E+01 1.22E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(563364001) - IM 30-Nov-21 Cesium-137 1.62E+01 1.62E+01 1.36E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(563364001) - IM 30-Nov-21 Cobalt-58 5.44E+00 1.89E+01 1.13E+01 pCi/kg 211

Mussel Sample Results POS Pacific Ocean South of Diablo Cove(563364001) - IM 30-Nov-21 Cobalt-60 -6.95E+00 1.71E+01 1.15E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(563364001) - IM 30-Nov-21 Iron-59 -4.10E+01 2.53E+01 3.32E+01 pCi/kg I I I I I POS Pacific Ocean South of Diablo Cove(563364001) - IM 30-Nov-21 Manganese-54 5.67E-01 1.73E+01 1.05E+01 pCi/kg POS Pacific Ocean South of Diablo Cove(563364001) - IM 30-Nov-21 Zinc-65 -5.32E+00 3.84E+01 2.48E+01 pCi/kg 212

Sea Water Sample Results 7C2 Rattlesnake Canyon SW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 BETA 1.98E+02 9.36E+01 7.18E+01 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Barium-140 6.92E+00 9.01E+00 5.85E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Cesium-134 2.02E-01 1.77E+00 1.13E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Cesium-137 -5.60E-01 1.71E+00 1.11E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Cobalt-58 -4.84E-01 1.68E+00 1.10E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Cobalt-60 -4.98E-01 1.78E+00 1.14E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Iodine-131 1.24E+00 2.81E+00 1.66E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Iron-55 -6.27E+01 1.41E+02 8.68E+01 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Iron-59 3.12E-01 3.75E+00 2.19E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Lanthanum-140 6.73E-02 2.90E+00 1.76E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Manganese-54 -2.99E-01 1.47E+00 9.51E-01 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Nickel-63 1.01E+01 3.69E+01 2.23E+01 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Niobium-95 2.44E-01 1.78E+00 1.08E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Total Strontium -6.60E-02 3.56E+00 2.12E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Tritium 2.39E+00 2.28E+02 1.36E+02 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Zinc-65 1.54E-01 3.45E+00 2.30E+00 pCi/L 7C2 Rattlesnake Canyon(531171002) - SW 20-Jan-21 Zirconium-95 -6.25E-01 3.13E+00 1.99E+00 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 BETA 2.05E+02 1.11E+02 8.05E+01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Barium-140 7.79E+00 7.79E+00 1.00E+01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Cesium-134 2.88E-01 1.69E+00 9.94E-01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Cesium-137 6.97E-01 1.54E+00 9.93E-01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Cobalt-58 -6.99E-01 1.35E+00 9.27E-01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Cobalt-60 -1.25E-02 1.46E+00 8.45E-01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Iodine-131 -2.84E-01 2.55E+00 1.63E+00 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Iron-55 -5.74E+01 1.38E+02 8.44E+01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Iron-59 -7.82E-01 3.23E+00 2.09E+00 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Lanthanum-140 -2.13E+00 2.36E+00 2.96E+00 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Manganese-54 8.82E-02 1.46E+00 8.68E-01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Nickel-63 -4.61E+00 2.45E+01 1.44E+01 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Niobium-95 -6.08E-01 1.44E+00 1.47E+00 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Total Strontium 3.65E+00 4.37E+00 2.83E+00 pCi/L 213

Sea Water Sample Results 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Tritium 1.79E+01 2.73E+02 1.64E+02 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Zinc-65 -2.31E-01 3.23E+00 2.01E+00 pCi/L 7C2 Rattlesnake Canyon(534657001) - SW 8-Feb-21 Zirconium-95 2.30E-01 2.63E+00 1.55E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 BETA 2.18E+02 8.87E+01 7.25E+01 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Barium-140 -6.71E+00 1.14E+01 1.16E+01 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Cesium-134 2.73E-01 1.86E+00 1.13E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Cesium-137 8.98E-01 1.68E+00 1.90E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Cobalt-58 -1.02E-02 1.74E+00 1.07E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Cobalt-60 1.74E-01 1.83E+00 1.08E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Iodine-131 -1.39E+00 5.10E+00 3.09E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Iron-55 -7.67E+01 1.21E+02 8.77E+01 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Iron-59 9.33E-01 4.29E+00 2.48E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Lanthanum-140 2.26E-03 3.84E+00 2.34E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Manganese-54 -1.63E-01 1.66E+00 1.05E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Nickel-63 -3.13E+00 2.65E+01 1.56E+01 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Niobium-95 2.45E-01 1.92E+00 1.16E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Total Strontium 1.08E+00 2.17E+00 1.37E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Tritium 5.10E+01 2.34E+02 1.42E+02 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Zinc-65 3.56E-01 4.07E+00 2.38E+00 pCi/L 7C2 Rattlesnake Canyon(535392002) - SW 1-Mar-21 Zirconium-95 1.69E-01 3.34E+00 2.03E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 BETA 2.79E+02 1.48E+02 1.06E+02 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Barium-140 5.71E-01 9.99E+00 5.86E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Cesium-134 -5.06E-02 2.12E+00 1.24E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Cesium-137 4.58E-01 2.07E+00 1.24E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Cobalt-58 4.79E-01 2.06E+00 1.19E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Cobalt-60 -5.91E-01 2.15E+00 1.35E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Iodine-131 2.01E+00 3.60E+00 2.37E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Iron-55 1.32E+00 1.04E+02 7.48E+01 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Iron-59 2.67E-01 4.65E+00 3.23E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Lanthanum-140 -9.92E-01 3.69E+00 2.38E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Manganese-54 1.26E-01 1.90E+00 1.11E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Nickel-63 -2.67E+00 2.49E+01 1.47E+01 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Niobium-95 -2.53E-01 1.96E+00 1.16E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Total Strontium 4.61E+00 5.18E+00 3.41E+00 pCi/L 214

Sea Water Sample Results 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Tritium 8.01E+01 3.02E+02 1.84E+02 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Zinc-65 -2.05E+00 4.05E+00 2.80E+00 pCi/L 7C2 Rattlesnake Canyon(538524004) - SW 5-Apr-21 Zirconium-95 8.02E-01 3.49E+00 2.00E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 BETA 2.46E+02 8.95E+01 7.59E+01 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 BETA 2.97E+02 1.41E+02 1.05E+02 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Barium-140 5.18E+00 1.15E+01 7.05E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Barium-140 -3.63E+00 7.25E+00 4.86E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Cesium-134 -1.53E+00 2.28E+00 2.21E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Cesium-134 -4.42E-02 1.64E+00 1.01E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Cesium-137 1.50E+00 2.37E+00 1.51E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Cesium-137 -2.60E-01 1.43E+00 8.92E-01 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Cobalt-58 -4.71E-01 2.18E+00 1.31E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Cobalt-58 3.44E-01 1.57E+00 9.44E-01 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Cobalt-60 1.06E+00 2.62E+00 1.54E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Cobalt-60 2.56E-01 1.57E+00 1.03E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Iodine-131 -8.17E-02 3.27E+00 1.94E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Iodine-131 6.33E-01 2.91E+00 1.69E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Iron-55 8.49E+00 9.71E+01 6.75E+01 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Iron-55 2.74E+01 9.88E+01 6.96E+01 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Iron-59 2.75E+00 5.34E+00 3.20E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Iron-59 -1.36E+00 3.11E+00 2.02E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Lanthanum-140 7.71E-01 4.08E+00 2.42E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Lanthanum-140 -8.61E-01 2.41E+00 1.59E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Manganese-54 -9.87E-01 2.08E+00 1.35E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Manganese-54 6.71E-01 1.45E+00 8.84E-01 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Nickel-63 3.18E+00 1.92E+01 1.15E+01 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Nickel-63 8.51E+00 1.97E+01 1.21E+01 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Niobium-95 5.39E-01 2.49E+00 1.42E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Niobium-95 3.78E-01 1.51E+00 1.48E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Total Strontium -3.52E+00 1.96E+00 1.04E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Total Strontium 2.14E+00 2.16E+00 1.43E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Tritium 7.16E+01 3.24E+02 1.98E+02 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Tritium 4.10E+00 3.07E+02 1.83E+02 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Zinc-65 3.05E+00 5.42E+00 3.59E+00 pCi/L 215

Sea Water Sample Results 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Zinc-65 7.24E-01 3.28E+00 2.11E+00 pCi/L 7C2 Rattlesnake Canyon(541543001) - SW 5-May-21 Zirconium-95 1.28E+00 3.86E+00 2.35E+00 pCi/L 7C2 Rattlesnake Canyon(541543004) - SW 5-May-21 Zirconium-95 -1.85E+00 2.53E+00 1.90E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 BETA 3.14E+02 1.18E+02 9.59E+01 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Barium-140 -2.37E-01 1.18E+01 6.92E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Cesium-134 -4.57E-01 2.31E+00 1.46E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Cesium-137 1.33E+00 2.02E+00 1.85E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Cobalt-58 -4.35E-01 2.08E+00 1.32E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Cobalt-60 -4.10E+00 1.90E+00 5.23E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Iodine-131 -1.96E-01 4.13E+00 2.85E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Iron-55 -4.31E+01 1.11E+02 7.55E+01 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Iron-59 1.84E+00 5.44E+00 3.09E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Lanthanum-140 9.54E-01 4.83E+00 2.79E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Manganese-54 -9.87E-01 1.87E+00 1.33E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Nickel-63 -1.14E+01 2.65E+01 1.54E+01 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Niobium-95 4.92E-01 2.45E+00 1.45E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Total Strontium -5.17E+00 6.15E+00 3.49E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Tritium 1.23E+02 2.40E+02 1.51E+02 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Zinc-65 -3.70E-01 5.28E+00 3.09E+00 pCi/L 7C2 Rattlesnake Canyon(544764001) - SW 1-Jun-21 Zirconium-95 -1.49E-01 4.17E+00 2.52E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 BETA 2.71E+02 1.27E+02 9.55E+01 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Barium-140 5.37E+00 1.58E+01 9.32E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Cesium-134 -3.25E-01 1.97E+00 1.23E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Cesium-137 1.16E-01 1.93E+00 1.15E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Cobalt-58 -1.90E-01 1.90E+00 1.18E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Cobalt-60 -9.50E-01 1.59E+00 1.13E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Iodine-131 4.24E+00 7.95E+00 5.20E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Iron-55 1.52E+01 9.29E+01 6.03E+01 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Iron-59 -2.74E-01 4.34E+00 2.54E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Lanthanum-140 -1.89E+00 4.63E+00 3.12E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Manganese-54 8.16E-01 2.01E+00 1.22E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Nickel-63 1.63E+01 3.53E+01 2.17E+01 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Niobium-95 -7.41E-01 1.98E+00 1.30E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Total Strontium -2.57E+00 8.62E+00 4.83E+00 pCi/L 216

Sea Water Sample Results 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Tritium 1.88E+01 2.72E+02 1.63E+02 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Zinc-65 1.36E+00 4.13E+00 2.36E+00 pCi/L 7C2 Rattlesnake Canyon(549379001) - SW 19-Jul-21 Zirconium-95 -1.57E+00 3.44E+00 2.32E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 BETA 3.71E+02 1.40E+02 1.12E+02 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Barium-140 3.96E-01 1.01E+01 6.18E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Cesium-134 8.52E-01 2.03E+00 1.20E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Cesium-137 1.85E-01 1.75E+00 1.01E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Cobalt-58 -7.86E-02 1.82E+00 1.08E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Cobalt-60 -9.40E-01 1.83E+00 1.53E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Iodine-131 -9.18E-01 4.04E+00 2.50E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Iron-55 9.67E+00 5.41E+01 3.59E+01 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Iron-59 -2.05E+00 3.69E+00 2.60E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Lanthanum-140 -1.67E+00 3.15E+00 2.20E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Manganese-54 5.68E-01 1.84E+00 1.08E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Nickel-63 -7.95E+00 2.06E+01 1.19E+01 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Niobium-95 6.72E-01 1.91E+00 1.12E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Total Strontium -1.42E+00 5.95E+00 3.50E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Tritium -9.81E+01 2.73E+02 1.58E+02 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Zinc-65 -4.17E+00 3.43E+00 3.57E+00 pCi/L 7C2 Rattlesnake Canyon(552197003) - SW 9-Aug-21 Zirconium-95 1.44E+00 3.57E+00 2.11E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 BETA 2.39E+02 1.09E+02 8.42E+01 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Barium-140 5.05E+00 8.42E+00 8.37E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Cesium-134 5.19E-02 1.67E+00 9.89E-01 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Cesium-137 1.10E+00 1.46E+00 2.44E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Cobalt-58 7.49E-01 1.64E+00 9.92E-01 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Cobalt-60 -5.51E-02 1.50E+00 8.89E-01 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Iodine-131 4.73E-01 2.94E+00 1.74E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Iron-55 4.65E+01 1.00E+02 6.64E+01 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Iron-59 1.77E+00 3.15E+00 3.55E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Lanthanum-140 -1.14E+00 2.76E+00 1.83E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Manganese-54 -1.05E+00 1.37E+00 1.00E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Nickel-63 -2.06E-01 3.32E+01 1.98E+01 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Niobium-95 3.65E-01 1.58E+00 9.29E-01 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Total Strontium 2.82E+00 4.08E+00 2.61E+00 pCi/L 217

Sea Water Sample Results 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Tritium 7.57E+01 2.95E+02 1.80E+02 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Zinc-65 2.33E+00 3.78E+00 2.43E+00 pCi/L 7C2 Rattlesnake Canyon(555391001) - SW 13-Sep-21 Zirconium-95 -1.06E+00 2.55E+00 1.64E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 BETA 2.71E+02 9.15E+01 7.94E+01 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Barium-140 2.51E+00 1.34E+01 8.06E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Cesium-134 -1.71E+00 1.43E+00 1.37E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Cesium-137 -5.47E-01 1.44E+00 9.63E-01 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Cobalt-58 4.81E-01 1.56E+00 1.00E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Cobalt-60 6.02E-01 1.61E+00 1.07E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Iodine-131 -1.33E+00 6.09E+00 3.69E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Iron-55 1.21E+01 6.07E+01 4.35E+01 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Iron-59 -3.90E-01 3.59E+00 2.19E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Lanthanum-140 -2.83E-01 4.47E+00 2.65E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Manganese-54 -8.04E-02 1.53E+00 9.01E-01 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Nickel-63 -3.99E+00 2.06E+01 1.21E+01 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Niobium-95 -1.90E-01 1.55E+00 9.18E-01 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Total Strontium 3.48E-01 3.81E+00 2.28E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Tritium -7.41E+01 3.62E+02 2.12E+02 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Zinc-65 -1.83E+00 3.21E+00 2.24E+00 pCi/L 7C2 Rattlesnake Canyon(559211003) - SW 18-Oct-21 Zirconium-95 -1.37E+00 2.80E+00 1.83E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 BETA 2.74E+02 1.07E+02 8.65E+01 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Barium-140 2.41E+00 1.20E+01 7.03E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Cesium-134 -3.01E-02 1.69E+00 1.04E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Cesium-137 5.49E-01 1.54E+00 9.18E-01 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Cobalt-58 -5.62E-01 1.65E+00 1.09E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Cobalt-60 2.86E-01 1.70E+00 1.11E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Iodine-131 1.03E+00 5.46E+00 3.15E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Iron-55 -1.22E+01 7.62E+01 5.64E+01 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Iron-59 4.59E-01 3.79E+00 2.17E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Lanthanum-140 -1.86E+00 3.45E+00 2.68E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Manganese-54 -1.27E-01 1.51E+00 1.06E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Nickel-63 1.75E+00 2.05E+01 1.23E+01 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Niobium-95 2.22E-01 1.68E+00 1.13E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Total Strontium 2.70E+00 4.41E+00 2.77E+00 pCi/L 218

Sea Water Sample Results 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Tritium -2.35E+00 2.87E+02 1.71E+02 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Zinc-65 -1.40E+00 3.25E+00 2.11E+00 pCi/L 7C2 Rattlesnake Canyon(562129003) - SW 15-Nov-21 Zirconium-95 -3.56E-01 3.06E+00 1.90E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 BETA 2.84E+02 1.40E+02 1.03E+02 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Barium-140 -2.26E+00 9.02E+00 5.59E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Cesium-134 6.23E-02 1.91E+00 1.16E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Cesium-137 4.43E-01 1.71E+00 1.02E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Cobalt-58 3.50E-01 1.81E+00 1.08E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Cobalt-60 -4.21E-01 1.96E+00 1.21E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Iodine-131 -1.66E+00 3.61E+00 2.30E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Iron-55 1.89E+01 7.32E+01 5.25E+01 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Iron-59 9.54E-01 4.00E+00 2.29E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Lanthanum-140 -1.39E+00 3.23E+00 2.51E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Manganese-54 -2.50E-01 1.61E+00 1.01E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Nickel-63 4.70E+00 2.31E+01 1.40E+01 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Niobium-95 3.89E-02 1.69E+00 1.15E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Total Strontium -9.64E-01 2.18E+00 1.27E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Tritium 1.03E+02 2.84E+02 1.75E+02 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Zinc-65 -2.37E+00 3.74E+00 4.01E+00 pCi/L 7C2 Rattlesnake Canyon(564004001) - SW 8-Dec-21 Zirconium-95 -1.20E+00 3.20E+00 3.34E+00 pCi/L DCM Diablo Cove Marine SW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 BETA 1.46E+02 9.96E+01 6.93E+01 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Barium-140 -3.66E-01 7.76E+00 4.62E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Cesium-134 -1.22E-01 1.85E+00 1.28E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Cesium-137 6.79E-01 1.87E+00 1.11E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Cobalt-58 4.38E-01 1.86E+00 1.12E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Cobalt-60 1.05E+00 2.21E+00 1.29E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Iodine-131 -5.99E-01 2.85E+00 1.70E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Iron-55 7.43E+01 1.34E+02 8.69E+01 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Iron-59 -1.37E+00 3.79E+00 2.39E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Lanthanum-140 -2.17E+00 1.85E+00 1.76E+00 pCi/L 219

Sea Water Sample Results DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Manganese-54 -8.21E-01 1.67E+00 1.16E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Nickel-63 5.13E-01 1.78E+01 1.06E+01 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Niobium-95 -3.33E-01 1.78E+00 1.12E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Total Strontium -3.21E+00 6.49E+00 3.78E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Tritium 1.20E+02 2.22E+02 1.40E+02 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Zinc-65 -4.10E-01 4.13E+00 2.43E+00 pCi/L DCM Diablo Cove Marine(531171001) - SW 20-Jan-21 Zirconium-95 -3.99E-04 3.19E+00 1.93E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 BETA 1.56E+03 1.13E+02 2.75E+02 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Barium-140 -1.49E+00 6.27E+00 5.93E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Cesium-134 1.24E-01 1.43E+00 8.76E-01 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Cesium-137 -2.22E-01 1.45E+00 9.08E-01 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Cobalt-58 -2.08E-01 1.26E+00 8.06E-01 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Cobalt-60 1.35E+00 1.60E+00 1.22E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Iodine-131 8.43E-01 2.58E+00 1.53E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Iron-55 3.90E+01 1.19E+02 7.77E+01 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Iron-59 5.10E-01 2.96E+00 1.71E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Lanthanum-140 1.05E-01 1.94E+00 1.83E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Manganese-54 2.95E-01 1.36E+00 8.67E-01 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Nickel-63 -1.37E+01 2.87E+01 1.67E+01 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Niobium-95 -4.40E-01 1.35E+00 1.00E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Total Strontium -5.16E+00 6.04E+00 3.44E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Tritium 1.19E+01 2.78E+02 1.66E+02 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Zinc-65 6.02E-01 3.21E+00 1.86E+00 pCi/L DCM Diablo Cove Marine(534657002) - SW 8-Feb-21 Zirconium-95 9.78E-03 2.36E+00 1.45E+00 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 BETA 2.56E+02 1.55E+02 1.08E+02 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Barium-140 1.74E+00 7.88E+00 4.57E+00 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Cesium-134 9.07E-01 1.48E+00 9.13E-01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Cesium-137 4.39E-01 1.35E+00 7.94E-01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Cobalt-58 -6.38E-01 1.26E+00 8.67E-01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Cobalt-60 -2.82E-01 1.24E+00 7.63E-01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Iodine-131 -2.49E+00 2.86E+00 3.06E+00 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Iron-55 -5.31E+01 1.20E+02 8.76E+01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Iron-59 6.43E-01 2.91E+00 1.76E+00 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Lanthanum-140 -1.03E+00 2.59E+00 1.72E+00 pCi/L 220

Sea Water Sample Results DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Manganese-54 2.93E-01 1.30E+00 7.75E-01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Nickel-63 -1.28E+00 2.65E+01 1.57E+01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Niobium-95 5.21E-01 1.43E+00 8.51E-01 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Total Strontium -8.18E-01 2.31E+00 1.33E+00 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Tritium 1.16E+02 2.24E+02 1.41E+02 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Zinc-65 1.30E+00 2.91E+00 1.68E+00 pCi/L DCM Diablo Cove Marine(535392003) - SW 1-Mar-21 Zirconium-95 -7.54E-01 2.15E+00 1.57E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 BETA 3.46E+02 1.47E+02 1.13E+02 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Barium-140 -4.76E+00 6.37E+00 6.72E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Cesium-134 1.69E-01 1.43E+00 8.75E-01 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Cesium-137 -2.09E-01 1.33E+00 8.36E-01 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Cobalt-58 5.95E-01 1.42E+00 9.09E-01 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Cobalt-60 4.84E-01 1.73E+00 1.01E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Iodine-131 5.88E-01 2.47E+00 1.45E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Iron-55 -1.14E+01 1.07E+02 7.68E+01 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Iron-59 -1.36E-01 3.18E+00 1.88E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Lanthanum-140 3.15E-02 2.24E+00 1.54E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Manganese-54 -4.20E-01 1.27E+00 7.85E-01 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Nickel-63 -1.49E+01 3.65E+01 2.11E+01 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Niobium-95 1.93E-01 1.42E+00 8.62E-01 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Total Strontium -4.29E+00 3.68E+00 2.09E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Tritium -7.77E+01 2.90E+02 1.70E+02 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Zinc-65 -1.36E+00 2.53E+00 1.73E+00 pCi/L DCM Diablo Cove Marine(538524003) - SW 5-Apr-21 Zirconium-95 7.89E-01 2.68E+00 1.63E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 BETA 2.59E+02 1.43E+02 1.03E+02 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Barium-140 -1.85E+00 8.21E+00 5.03E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Cesium-134 -4.14E-01 1.65E+00 1.05E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Cesium-137 2.62E-01 1.67E+00 1.11E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Cobalt-58 -5.23E-01 1.61E+00 1.18E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Cobalt-60 -3.08E-01 1.52E+00 9.41E-01 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Iodine-131 8.88E-01 3.14E+00 1.82E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Iron-55 -4.86E+01 1.01E+02 6.85E+01 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Iron-59 6.74E-01 3.41E+00 1.96E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Lanthanum-140 -1.27E+00 2.24E+00 2.58E+00 pCi/L 221

Sea Water Sample Results DCM Diablo Cove Marine(541543002) - SW 5-May-21 Manganese-54 -1.30E-01 1.73E+00 1.07E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Nickel-63 -6.12E+00 2.27E+01 1.33E+01 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Niobium-95 -2.51E-01 1.72E+00 1.07E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Total Strontium 3.73E-01 2.44E+00 1.47E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Tritium -4.11E+01 3.04E+02 1.78E+02 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Zinc-65 -3.79E-01 3.20E+00 1.90E+00 pCi/L DCM Diablo Cove Marine(541543002) - SW 5-May-21 Zirconium-95 2.42E+00 2.92E+00 2.46E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 BETA 1.78E+02 1.46E+02 9.65E+01 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Barium-140 2.98E+00 1.04E+01 6.30E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Cesium-134 8.02E-01 2.31E+00 1.34E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Cesium-137 1.10E+00 2.14E+00 1.27E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Cobalt-58 6.79E-01 2.17E+00 1.26E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Cobalt-60 5.86E-01 2.10E+00 1.39E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Iodine-131 1.92E-01 3.36E+00 1.99E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Iron-55 1.82E+01 1.32E+02 9.27E+01 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Iron-59 -7.62E-01 4.13E+00 2.57E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Lanthanum-140 -1.03E+00 3.07E+00 1.98E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Manganese-54 7.04E-01 2.00E+00 1.16E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Nickel-63 -1.38E+01 4.46E+01 2.61E+01 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Niobium-95 7.53E-01 2.24E+00 1.30E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Total Strontium -6.94E+00 5.53E+00 3.08E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Tritium 7.59E+01 2.50E+02 1.53E+02 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Zinc-65 -8.51E-01 4.35E+00 2.71E+00 pCi/L DCM Diablo Cove Marine(544764002) - SW 1-Jun-21 Zirconium-95 -6.08E-01 3.63E+00 2.17E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 BETA 2.63E+02 9.58E+01 8.08E+01 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Barium-140 1.34E+00 1.30E+01 7.67E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Cesium-134 1.32E-01 1.71E+00 1.04E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Cesium-137 -1.54E+00 1.55E+00 1.98E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Cobalt-58 5.59E-02 1.76E+00 1.08E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Cobalt-60 -2.12E+00 1.71E+00 2.38E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Iodine-131 -1.90E+00 6.20E+00 5.69E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Iron-55 -4.65E+01 1.01E+02 6.40E+01 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Iron-59 1.03E+00 4.39E+00 2.54E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Lanthanum-140 -1.07E+00 4.64E+00 3.01E+00 pCi/L 222

Sea Water Sample Results DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Manganese-54 4.10E-01 1.59E+00 9.65E-01 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Nickel-63 8.42E+00 3.39E+01 2.06E+01 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Niobium-95 2.45E-01 1.89E+00 1.15E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Total Strontium 5.09E-01 8.38E+00 5.06E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Tritium -5.01E+01 2.72E+02 1.60E+02 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Zinc-65 -2.47E+00 3.63E+00 3.16E+00 pCi/L DCM Diablo Cove Marine(549379002) - SW 19-Jul-21 Zirconium-95 3.65E-02 3.10E+00 1.90E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 BETA 2.99E+02 1.56E+02 1.13E+02 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Barium-140 -7.89E-01 9.86E+00 5.89E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Cesium-134 1.14E+00 2.16E+00 1.33E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Cesium-137 1.58E-01 1.89E+00 1.12E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Cobalt-58 -3.06E-02 1.95E+00 1.19E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Cobalt-60 1.24E-01 1.93E+00 1.12E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Iodine-131 4.41E-01 4.48E+00 2.57E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Iron-55 2.89E+01 5.68E+01 3.88E+01 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Iron-59 -1.83E+00 3.79E+00 2.50E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Lanthanum-140 4.63E-01 3.55E+00 2.34E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Manganese-54 3.10E-02 1.83E+00 1.11E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Nickel-63 1.72E+00 2.08E+01 1.25E+01 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Niobium-95 -6.19E-02 2.03E+00 1.80E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Total Strontium -4.27E-01 3.58E+00 2.12E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Tritium 3.39E+01 2.56E+02 1.54E+02 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Zinc-65 -1.81E-02 4.27E+00 2.47E+00 pCi/L DCM Diablo Cove Marine(552197002) - SW 9-Aug-21 Zirconium-95 -8.65E-01 2.99E+00 1.93E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 BETA 1.93E+02 8.51E+01 6.78E+01 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Barium-140 -6.14E+00 7.32E+00 5.60E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Cesium-134 -1.03E+00 1.73E+00 1.68E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Cesium-137 -6.34E-01 1.60E+00 1.06E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Cobalt-58 -2.71E-01 1.46E+00 1.06E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Cobalt-60 3.53E-01 1.67E+00 9.72E-01 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Iodine-131 -6.19E-01 3.09E+00 1.87E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Iron-55 2.90E+01 9.78E+01 6.34E+01 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Iron-59 -3.01E-01 3.27E+00 1.94E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Lanthanum-140 -8.73E-01 2.68E+00 1.76E+00 pCi/L 223

Sea Water Sample Results DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Manganese-54 -9.14E-02 1.49E+00 9.33E-01 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Nickel-63 -1.29E+01 2.66E+01 1.54E+01 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Niobium-95 -2.04E-01 1.69E+00 1.62E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Total Strontium -3.05E+00 5.19E+00 2.99E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Tritium -1.20E+02 2.89E+02 1.66E+02 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Zinc-65 -2.93E+00 3.33E+00 3.36E+00 pCi/L DCM Diablo Cove Marine(555391002) - SW 13-Sep-21 Zirconium-95 3.94E-01 2.77E+00 1.68E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 BETA 2.99E+02 1.08E+02 9.07E+01 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Barium-140 -1.16E+00 1.29E+01 8.00E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Cesium-134 3.23E-01 1.94E+00 1.56E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Cesium-137 -1.78E+00 1.64E+00 1.77E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Cobalt-58 3.28E-01 1.86E+00 1.07E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Cobalt-60 -1.97E-01 1.86E+00 1.13E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Iodine-131 -9.14E-01 6.61E+00 4.04E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Iron-55 2.80E+01 5.60E+01 4.10E+01 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Iron-59 -1.90E+00 4.06E+00 2.69E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Lanthanum-140 5.58E-02 4.72E+00 2.84E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Manganese-54 2.08E-01 1.67E+00 9.63E-01 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Nickel-63 -3.88E+00 2.03E+01 1.19E+01 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Niobium-95 9.55E-01 2.03E+00 1.20E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Total Strontium -8.51E-02 3.72E+00 2.21E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Tritium 4.59E+01 2.92E+02 1.76E+02 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Zinc-65 -2.65E-01 4.00E+00 2.38E+00 pCi/L DCM Diablo Cove Marine(559211002) - SW 18-Oct-21 Zirconium-95 2.24E+00 3.57E+00 2.18E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 BETA 2.39E+02 8.29E+01 7.27E+01 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Barium-140 5.02E+00 1.46E+01 8.61E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Cesium-134 7.13E-01 1.83E+00 1.09E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Cesium-137 1.60E+00 1.84E+00 1.68E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Cobalt-58 -8.28E-03 1.87E+00 1.14E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Cobalt-60 -6.37E-02 2.00E+00 1.18E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Iodine-131 -2.01E-01 6.65E+00 3.84E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Iron-55 -9.75E+00 7.79E+01 5.76E+01 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Iron-59 -9.44E-02 4.20E+00 2.44E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Lanthanum-140 -3.45E+00 4.55E+00 3.50E+00 pCi/L 224

Sea Water Sample Results DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Manganese-54 -6.51E-01 1.72E+00 1.29E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Nickel-63 -8.56E+00 1.43E+01 8.24E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Niobium-95 1.77E+00 1.77E+00 2.70E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Total Strontium -1.02E+00 2.07E+00 1.19E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Tritium 2.06E+02 2.86E+02 1.85E+02 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Zinc-65 2.52E-01 3.87E+00 2.51E+00 pCi/L DCM Diablo Cove Marine(562129002) - SW 15-Nov-21 Zirconium-95 1.37E+00 3.45E+00 2.06E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 BETA 1.92E+02 1.46E+02 9.78E+01 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Barium-140 -8.24E+00 9.09E+00 7.26E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Cesium-134 -4.96E-01 1.99E+00 1.40E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Cesium-137 1.36E-01 1.84E+00 1.06E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Cobalt-58 -2.63E-01 1.68E+00 1.25E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Cobalt-60 -6.23E-01 1.66E+00 1.07E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Iodine-131 1.42E+00 3.99E+00 2.41E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Iron-55 -9.67E+00 7.26E+01 5.12E+01 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Iron-59 5.16E-01 3.97E+00 2.37E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Lanthanum-140 -2.63E-01 3.13E+00 1.88E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Manganese-54 -4.47E-02 1.79E+00 1.06E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Nickel-63 2.32E+00 2.00E+01 1.20E+01 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Niobium-95 -4.37E-02 2.04E+00 1.20E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Total Strontium 5.13E-01 1.44E+00 8.87E-01 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Tritium -2.22E+01 3.06E+02 1.81E+02 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Zinc-65 6.54E-01 3.79E+00 2.57E+00 pCi/L DCM Diablo Cove Marine(564004002) - SW 8-Dec-21 Zirconium-95 6.26E-01 3.36E+00 1.95E+00 pCi/L OUT Plant Outfall SW Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units OUT Plant Outfall(531171003) - SW 20-Jan-21 BETA 6.40E+02 1.48E+02 1.50E+02 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Barium-140 -3.90E+00 6.41E+00 4.51E+00 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Cesium-134 4.08E-01 1.60E+00 9.33E-01 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Cesium-137 2.29E-01 1.53E+00 9.91E-01 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Cobalt-58 -5.55E-01 1.37E+00 8.75E-01 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Cobalt-60 -4.06E-01 1.51E+00 9.25E-01 pCi/L 225

Sea Water Sample Results OUT Plant Outfall(531171003) - SW 20-Jan-21 Iodine-131 4.37E-01 2.27E+00 1.34E+00 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Iron-55 -1.60E+02 1.45E+02 8.58E+01 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Iron-59 2.75E-01 3.22E+00 1.92E+00 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Lanthanum-140 9.38E-02 2.29E+00 1.54E+00 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Manganese-54 3.38E-01 1.53E+00 8.95E-01 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Nickel-63 -7.69E+00 4.69E+01 2.77E+01 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Niobium-95 -4.05E-02 1.46E+00 8.53E-01 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Total Strontium -9.18E-01 4.84E+00 2.85E+00 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Tritium 3.39E+00 2.30E+02 1.37E+02 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Zinc-65 -2.13E+00 3.29E+00 2.98E+00 pCi/L OUT Plant Outfall(531171003) - SW 20-Jan-21 Zirconium-95 1.14E+00 2.83E+00 1.67E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 BETA 2.31E+02 8.31E+01 7.10E+01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Barium-140 8.11E-01 7.65E+00 4.69E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Cesium-134 -1.43E-01 1.59E+00 9.46E-01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Cesium-137 1.36E+00 1.36E+00 1.75E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Cobalt-58 -1.17E-01 1.48E+00 8.82E-01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Cobalt-60 -2.77E-01 1.45E+00 9.22E-01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Iodine-131 1.53E-01 2.75E+00 1.65E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Iron-55 -2.50E+01 1.41E+02 8.78E+01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Iron-59 1.27E+00 3.29E+00 2.21E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Lanthanum-140 6.81E-02 2.66E+00 1.55E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Manganese-54 -9.04E-03 1.47E+00 8.69E-01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Nickel-63 -2.74E+01 4.33E+01 2.49E+01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Niobium-95 2.29E-01 1.66E+00 9.66E-01 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Total Strontium 2.67E+00 7.24E+00 4.43E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Tritium 4.76E+00 2.78E+02 1.66E+02 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Zinc-65 9.27E-01 3.01E+00 2.72E+00 pCi/L OUT Plant Outfall(534657003) - SW 8-Feb-21 Zirconium-95 1.14E+00 2.83E+00 1.67E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 BETA 2.13E+02 1.13E+02 8.29E+01 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Barium-140 -3.28E+00 9.35E+00 6.00E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Cesium-134 9.87E-01 1.95E+00 1.21E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Cesium-137 1.35E-01 1.80E+00 1.08E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Cobalt-58 2.29E-01 1.77E+00 1.08E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Cobalt-60 8.17E-01 1.90E+00 1.11E+00 pCi/L 226

Sea Water Sample Results OUT Plant Outfall(535392001) - SW 1-Mar-21 Iodine-131 -8.24E-01 3.73E+00 2.23E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Iron-55 9.70E+00 1.26E+02 9.43E+01 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Iron-59 2.47E-01 3.91E+00 2.29E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Lanthanum-140 -2.13E-01 3.31E+00 2.05E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Manganese-54 -2.64E-01 1.68E+00 1.21E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Nickel-63 -6.58E-01 2.71E+01 1.61E+01 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Niobium-95 3.14E-01 1.82E+00 1.10E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Total Strontium -1.40E+00 4.13E+00 2.42E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Tritium 2.03E+01 2.26E+02 1.36E+02 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Zinc-65 -2.36E+00 3.68E+00 2.61E+00 pCi/L OUT Plant Outfall(535392001) - SW 1-Mar-21 Zirconium-95 -1.39E+00 3.06E+00 2.10E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 BETA 3.33E+02 1.56E+02 1.16E+02 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Barium-140 -3.58E+00 7.08E+00 4.65E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Cesium-134 -2.23E-02 1.64E+00 9.81E-01 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Cesium-137 -7.72E-02 1.62E+00 1.47E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Cobalt-58 6.86E-01 1.51E+00 9.01E-01 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Cobalt-60 3.05E-02 1.55E+00 8.93E-01 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Iodine-131 1.88E+00 2.68E+00 1.78E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Iron-55 -4.35E+01 1.02E+02 7.25E+01 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Iron-59 -2.62E+00 2.93E+00 2.40E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Lanthanum-140 -9.77E-01 2.58E+00 1.69E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Manganese-54 2.02E-01 1.61E+00 9.53E-01 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Nickel-63 -2.56E+00 2.22E+01 1.31E+01 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Niobium-95 -2.30E-01 1.47E+00 9.01E-01 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Total Strontium 3.77E+00 4.17E+00 2.72E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Tritium 3.60E+01 2.94E+02 1.77E+02 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Zinc-65 2.36E+00 3.40E+00 2.85E+00 pCi/L OUT Plant Outfall(538524001) - SW 5-Apr-21 Zirconium-95 -2.51E-01 2.73E+00 1.65E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 BETA 3.15E+02 1.20E+02 9.65E+01 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Barium-140 1.88E+00 6.88E+00 4.05E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Cesium-134 -1.42E+00 1.48E+00 1.45E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Cesium-137 1.08E+00 1.54E+00 9.85E-01 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Cobalt-58 6.87E-01 1.42E+00 8.69E-01 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Cobalt-60 -1.97E-01 1.44E+00 9.99E-01 pCi/L 227

Sea Water Sample Results OUT Plant Outfall(541543003) - SW 5-May-21 Iodine-131 5.21E-01 2.63E+00 2.13E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Iron-55 4.94E+01 9.21E+01 6.58E+01 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Iron-59 1.23E+00 3.19E+00 1.86E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Lanthanum-140 1.38E-03 2.32E+00 1.39E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Manganese-54 -1.36E-01 1.37E+00 8.50E-01 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Nickel-63 -6.51E+00 2.99E+01 1.75E+01 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Niobium-95 -6.42E-01 1.46E+00 1.29E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Total Strontium 2.92E-01 2.92E+00 1.75E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Tritium -1.31E+01 3.13E+02 1.86E+02 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Zinc-65 -1.51E+00 2.73E+00 1.85E+00 pCi/L OUT Plant Outfall(541543003) - SW 5-May-21 Zirconium-95 -2.49E-02 2.33E+00 1.42E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 BETA 2.08E+02 1.53E+02 1.03E+02 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Barium-140 -2.78E+00 7.89E+00 5.12E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Cesium-134 1.70E-01 1.78E+00 1.02E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Cesium-137 -5.53E-02 1.66E+00 1.02E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Cobalt-58 -2.48E-01 1.60E+00 9.46E-01 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Cobalt-60 -6.80E-02 1.61E+00 9.70E-01 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Iodine-131 5.90E-02 2.96E+00 1.74E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Iron-55 -8.46E+01 1.23E+02 8.22E+01 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Iron-59 2.13E-01 3.29E+00 1.92E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Lanthanum-140 3.02E-01 2.82E+00 1.68E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Manganese-54 -2.65E-01 1.57E+00 9.35E-01 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Nickel-63 -2.05E+01 4.73E+01 2.74E+01 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Niobium-95 -1.59E+00 1.68E+00 2.14E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Total Strontium 7.18E-03 5.29E+00 3.15E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Tritium 1.41E+02 2.31E+02 1.47E+02 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Zinc-65 -3.99E-01 3.70E+00 2.22E+00 pCi/L OUT Plant Outfall(544764003) - SW 1-Jun-21 Zirconium-95 1.89E+00 3.08E+00 1.91E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 BETA 2.80E+02 8.06E+01 7.62E+01 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Barium-140 8.06E-01 1.22E+01 8.05E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Cesium-134 1.26E+00 1.83E+00 1.17E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Cesium-137 -2.53E-01 1.54E+00 9.57E-01 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Cobalt-58 2.36E-01 1.61E+00 1.02E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Cobalt-60 3.67E-01 1.62E+00 9.29E-01 pCi/L 228

Sea Water Sample Results OUT Plant Outfall(549379003) - SW 19-Jul-21 Iodine-131 -1.45E+00 5.87E+00 3.55E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Iron-55 -3.27E+01 8.88E+01 5.61E+01 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Iron-59 -6.45E-01 3.32E+00 2.01E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Lanthanum-140 -1.64E+00 4.48E+00 2.96E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Manganese-54 4.70E-02 1.51E+00 9.22E-01 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Nickel-63 -9.18E+00 2.61E+01 1.52E+01 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Niobium-95 3.61E-01 1.67E+00 1.00E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Total Strontium -1.64E+00 8.01E+00 4.49E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Tritium -6.49E+01 2.74E+02 1.60E+02 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Zinc-65 9.59E-01 3.73E+00 2.14E+00 pCi/L OUT Plant Outfall(549379003) - SW 19-Jul-21 Zirconium-95 4.52E-01 3.00E+00 1.80E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 BETA 3.30E+02 1.30E+02 1.03E+02 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Barium-140 4.24E+00 1.04E+01 6.29E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Cesium-134 -2.51E+00 1.89E+00 2.19E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Cesium-137 -2.26E-01 1.92E+00 1.69E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Cobalt-58 1.87E-01 1.95E+00 1.18E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Cobalt-60 -2.59E-01 1.88E+00 1.13E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Iodine-131 2.25E+00 4.35E+00 4.85E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Iron-55 1.30E+01 5.30E+01 3.54E+01 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Iron-59 4.87E-02 4.28E+00 2.47E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Lanthanum-140 -6.17E-01 3.40E+00 2.10E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Manganese-54 -4.04E-01 1.63E+00 1.06E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Nickel-63 -1.92E+00 2.28E+01 1.35E+01 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Niobium-95 -6.34E-01 1.91E+00 1.25E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Total Strontium 2.31E+00 3.63E+00 2.32E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Tritium -1.47E+02 2.61E+02 1.49E+02 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Zinc-65 6.50E-01 4.00E+00 2.35E+00 pCi/L OUT Plant Outfall(552197001) - SW 9-Aug-21 Zirconium-95 7.06E-01 3.47E+00 2.33E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 BETA 5.43E+02 1.14E+02 1.23E+02 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Barium-140 1.74E-01 8.64E+00 5.06E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Cesium-134 -3.13E-01 1.81E+00 1.13E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Cesium-137 -6.50E-01 1.58E+00 1.04E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Cobalt-58 -7.07E-01 1.61E+00 1.08E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Cobalt-60 -5.49E-01 1.98E+00 1.75E+00 pCi/L 229

Sea Water Sample Results OUT Plant Outfall(555391003) - SW 13-Sep-21 Iodine-131 -9.38E-01 3.31E+00 1.99E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Iron-55 -1.15E+00 9.13E+01 5.74E+01 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Iron-59 -5.81E-01 3.54E+00 3.02E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Lanthanum-140 -1.91E+00 2.96E+00 2.16E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Manganese-54 -5.62E-01 1.61E+00 1.06E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Nickel-63 -1.64E+00 1.41E+01 8.35E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Niobium-95 6.14E-02 1.71E+00 1.02E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Total Strontium -2.64E+00 4.50E+00 2.60E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Tritium -7.41E-01 2.94E+02 1.75E+02 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Zinc-65 1.12E+00 3.94E+00 2.38E+00 pCi/L OUT Plant Outfall(555391003) - SW 13-Sep-21 Zirconium-95 1.46E-01 3.03E+00 1.81E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 BETA 5.25E+02 1.05E+02 1.18E+02 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Barium-140 2.33E+00 1.81E+01 1.04E+01 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Cesium-134 6.10E-01 2.69E+00 1.59E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Cesium-137 1.43E+00 2.67E+00 1.61E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Cobalt-58 -3.31E-01 2.17E+00 1.43E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Cobalt-60 1.97E+00 2.94E+00 3.01E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Iodine-131 -6.60E-01 8.20E+00 5.23E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Iron-55 -3.72E+00 5.85E+01 4.13E+01 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Iron-59 6.21E+00 6.21E+00 8.06E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Lanthanum-140 -3.09E+00 5.21E+00 3.91E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Manganese-54 -9.69E-01 2.59E+00 1.93E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Nickel-63 -5.53E+00 1.77E+01 1.02E+01 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Niobium-95 -1.03E+00 2.31E+00 1.57E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Total Strontium -8.12E-01 4.21E+00 2.48E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Tritium 8.21E+01 2.97E+02 1.82E+02 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Zinc-65 -3.28E+00 5.30E+00 4.69E+00 pCi/L OUT Plant Outfall(559211001) - SW 18-Oct-21 Zirconium-95 1.75E+00 4.41E+00 2.59E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 BETA 2.32E+02 1.55E+02 1.05E+02 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Barium-140 -3.52E+00 1.41E+01 1.24E+01 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Cesium-134 8.45E-02 1.97E+00 1.16E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Cesium-137 2.52E-02 1.87E+00 1.56E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Cobalt-58 3.57E-01 1.91E+00 1.12E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Cobalt-60 -1.56E-01 1.79E+00 1.06E+00 pCi/L 230

Sea Water Sample Results OUT Plant Outfall(562129001) - SW 15-Nov-21 Iodine-131 -1.33E+00 6.41E+00 4.00E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Iron-55 5.70E+01 8.42E+01 6.49E+01 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Iron-59 -4.50E-01 4.48E+00 2.77E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Lanthanum-140 -2.89E+00 3.95E+00 2.98E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Manganese-54 4.94E-01 1.84E+00 1.08E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Nickel-63 -1.66E+01 2.67E+01 1.54E+01 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Niobium-95 1.06E+00 2.18E+00 1.32E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Total Strontium -9.38E-01 1.94E+00 1.12E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Tritium 2.16E+02 2.88E+02 1.87E+02 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Zinc-65 1.85E+00 4.30E+00 2.61E+00 pCi/L OUT Plant Outfall(562129001) - SW 15-Nov-21 Zirconium-95 3.73E-02 3.38E+00 2.06E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 BETA 2.62E+02 1.79E+02 1.20E+02 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Barium-140 1.43E+00 1.31E+01 9.71E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Cesium-134 1.52E+00 2.70E+00 1.83E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Cesium-137 -4.25E-01 2.43E+00 2.14E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Cobalt-58 6.27E-01 2.42E+00 1.39E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Cobalt-60 -1.18E+00 2.21E+00 1.54E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Iodine-131 8.82E-01 4.69E+00 2.78E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Iron-55 -3.20E+01 7.24E+01 5.04E+01 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Iron-59 9.75E-01 5.80E+00 3.38E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Lanthanum-140 -2.36E+00 3.69E+00 2.76E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Manganese-54 -3.15E-01 2.25E+00 1.38E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Nickel-63 8.01E+00 2.21E+01 1.36E+01 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Niobium-95 -1.23E+00 2.22E+00 1.47E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Total Strontium 2.75E-01 2.12E+00 1.27E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Tritium -4.96E+01 2.84E+02 1.67E+02 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Zinc-65 -8.49E-01 5.00E+00 3.16E+00 pCi/L OUT Plant Outfall(564004003) - SW 8-Dec-21 Zirconium-95 -3.30E-01 4.16E+00 2.43E+00 pCi/L 231

Sediment Sample Results 7C2 Rattlesnake Canyon SD Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Barium-140 -2.31E+01 2.06E+02 1.24E+02 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Cesium-134 2.13E+01 5.82E+01 3.23E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Cesium-137 4.80E+01 4.80E+01 3.96E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Cobalt-58 -8.33E+00 2.49E+01 2.13E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Cobalt-60 2.60E+01 6.03E+01 3.20E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Iron-55 1.28E+04 1.63E+04 1.09E+04 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Iron-59 5.06E+01 1.10E+02 5.82E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Lanthanum-140 -4.62E+01 4.82E+01 5.22E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Manganese-54 -3.21E+00 4.22E+01 2.44E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Nickel-63 1.14E+03 2.17E+03 1.35E+03 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Niobium-95 1.27E+01 4.47E+01 2.71E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Total Strontium 4.27E+02 1.30E+03 8.24E+02 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Zinc-65 1.73E+01 1.09E+02 6.78E+01 pCi/kg 7C2 Rattlesnake Canyon(533311001) - SD 21-Jan-21 Zirconium-95 5.49E-01 7.47E+01 4.47E+01 pCi/kg AVA Avila Beach SD Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units AVA Avila Beach(532388002) - SD 25-Jan-21 Barium-140 -7.82E+01 1.62E+02 1.11E+02 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Cesium-134 2.07E+00 4.24E+01 2.37E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Cesium-137 1.39E+01 3.89E+01 2.21E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Cobalt-58 5.38E+00 3.60E+01 1.97E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Cobalt-60 -1.76E+01 3.63E+01 2.73E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Iron-55 6.96E+03 1.25E+04 8.16E+03 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Iron-59 -2.31E+01 9.03E+01 5.78E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Lanthanum-140 -1.79E+01 4.42E+01 3.29E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Manganese-54 -1.40E+01 3.05E+01 2.24E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Nickel-63 4.29E+02 2.03E+03 1.23E+03 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Niobium-95 -6.68E+00 3.93E+01 2.31E+01 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Total Strontium 1.77E+02 1.27E+03 7.80E+02 pCi/kg AVA Avila Beach(532388002) - SD 25-Jan-21 Zinc-65 2.19E+00 9.14E+01 6.11E+01 pCi/kg 232

Sediment Sample Results AVA Avila Beach(532388002) - SD 25-Jan-21 Zirconium-95 -3.72E+01 6.05E+01 4.44E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Barium-140 1.03E+01 3.19E+02 1.82E+02 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Cesium-134 1.91E+01 6.46E+01 3.64E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Cesium-137 5.52E+01 6.62E+01 3.99E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Cobalt-58 4.97E+00 5.96E+01 3.48E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Cobalt-60 7.75E+00 4.57E+01 2.47E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Iron-55 2.55E+03 8.44E+03 5.85E+03 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Iron-59 -9.76E+00 1.13E+02 6.69E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Lanthanum-140 -2.18E+01 1.04E+02 6.92E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Manganese-54 2.40E+01 6.08E+01 3.42E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Nickel-63 -2.56E+02 2.78E+03 1.65E+03 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Niobium-95 -3.00E+01 6.18E+01 4.24E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Total Strontium -9.52E+02 1.28E+03 6.45E+02 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Zinc-65 2.80E+01 1.38E+02 8.44E+01 pCi/kg AVA Avila Beach(562869001) - SD 18-Nov-21 Zirconium-95 3.09E+01 1.03E+02 5.74E+01 pCi/kg CBA Cambria Moonstone Beach SD Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Barium-140 3.10E+01 2.02E+02 1.07E+02 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Cesium-134 1.64E+01 4.16E+01 3.44E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Cesium-137 3.35E+00 4.29E+01 2.58E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Cobalt-58 2.74E+00 3.69E+01 2.06E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Cobalt-60 1.91E+01 4.21E+01 2.07E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Iron-55 6.71E+03 1.81E+04 1.14E+04 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Iron-59 1.47E+01 8.56E+01 4.71E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Lanthanum-140 -1.45E+01 3.77E+01 2.89E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Manganese-54 -5.42E+00 3.27E+01 2.03E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Nickel-63 6.20E+02 2.60E+03 1.57E+03 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Niobium-95 3.21E+00 4.74E+01 2.65E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Total Strontium 1.47E+03 1.64E+03 1.15E+03 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Zinc-65 1.17E+01 6.55E+01 3.84E+01 pCi/kg CBA Cambria Moonstone Beach(532388005) - SD 25-Jan-21 Zirconium-95 -4.94E+01 2.93E+01 4.06E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Barium-140 -7.69E+01 2.66E+02 1.65E+02 pCi/kg 233

Sediment Sample Results CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Cesium-134 1.07E+01 7.46E+01 4.10E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Cesium-137 4.83E+01 4.83E+01 4.79E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Cobalt-58 1.16E+01 6.74E+01 3.73E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Cobalt-60 -2.29E+00 4.20E+01 2.53E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Iron-55 -3.47E+03 1.14E+04 7.30E+03 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Iron-59 3.51E-01 9.47E+01 5.34E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Lanthanum-140 -5.00E+01 7.81E+01 6.74E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Manganese-54 -2.45E+01 4.75E+01 3.59E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Nickel-63 -1.75E+02 2.17E+03 1.28E+03 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Niobium-95 1.97E+01 6.17E+01 3.29E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Total Strontium -1.05E+03 1.73E+03 8.50E+02 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Zinc-65 5.47E+01 1.08E+02 7.60E+01 pCi/kg CBA Cambria Moonstone Beach(534514001) - SD 10-Feb-21 Zirconium-95 1.87E+00 8.46E+01 4.84E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Barium-140 -8.65E+01 1.97E+02 1.29E+02 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Cesium-134 1.70E+01 3.67E+01 2.03E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Cesium-137 1.67E+01 3.90E+01 2.19E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Cobalt-58 -5.80E+00 2.96E+01 1.76E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Cobalt-60 5.59E+00 2.92E+01 1.59E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Iron-55 3.62E+03 8.49E+03 5.91E+03 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Iron-59 1.70E+01 8.21E+01 4.51E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Lanthanum-140 -1.97E+01 4.49E+01 3.56E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Manganese-54 -8.98E+00 3.36E+01 2.21E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Nickel-63 5.51E+02 3.04E+03 1.84E+03 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Niobium-95 -1.30E+01 4.02E+01 2.98E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Total Strontium -6.18E+02 1.39E+03 7.64E+02 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Zinc-65 -1.36E+01 6.04E+01 4.39E+01 pCi/kg CBA Cambria Moonstone Beach(562869003) - SD 18-Nov-21 Zirconium-95 3.47E+01 6.71E+01 3.74E+01 pCi/kg CYA Cayucos Beach SD Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units CYA Cayucos Beach(532388004) - SD 25-Jan-21 Barium-140 9.31E-01 1.72E+02 9.79E+01 pCi/kg I I I I I CYA Cayucos Beach(532388004) - SD 25-Jan-21 Cesium-134 5.41E+01 5.41E+01 3.79E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Cesium-137 7.25E+00 4.77E+01 2.67E+01 pCi/kg 234

Sediment Sample Results CYA Cayucos Beach(532388004) - SD 25-Jan-21 Cobalt-58 1.58E+01 4.37E+01 2.33E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Cobalt-60 1.17E+01 4.06E+01 2.04E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Iron-55 3.49E+03 1.18E+04 7.64E+03 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Iron-59 1.56E+01 8.16E+01 4.75E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Lanthanum-140 -8.25E+00 5.01E+01 3.38E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Manganese-54 9.68E+00 4.77E+01 2.68E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Nickel-63 7.56E+02 1.90E+03 1.16E+03 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Niobium-95 4.32E+00 4.77E+01 2.74E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Total Strontium 6.85E+02 1.10E+03 8.04E+02 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Zinc-65 -3.92E+01 8.36E+01 5.93E+01 pCi/kg CYA Cayucos Beach(532388004) - SD 25-Jan-21 Zirconium-95 1.82E+00 6.80E+01 3.97E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Barium-140 2.94E+01 2.78E+02 1.72E+02 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Cesium-134 1.46E+01 6.14E+01 3.46E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Cesium-137 1.05E+01 5.75E+01 3.24E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Cobalt-58 -3.43E+00 4.10E+01 2.55E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Cobalt-60 1.28E+01 5.57E+01 2.99E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Iron-55 2.00E+03 7.60E+03 5.26E+03 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Iron-59 4.60E+01 1.33E+02 7.08E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Lanthanum-140 -7.55E+00 7.49E+01 4.81E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Manganese-54 3.98E+00 5.03E+01 2.94E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Nickel-63 8.55E+02 2.63E+03 1.61E+03 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Niobium-95 1.30E+01 5.11E+01 2.83E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Total Strontium 5.39E+02 1.03E+03 7.00E+02 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Zinc-65 5.98E+01 5.98E+01 7.02E+01 pCi/kg CYA Cayucos Beach(562869004) - SD 18-Nov-21 Zirconium-95 7.08E-01 8.51E+01 5.04E+01 pCi/kg DCM Diablo Cove Marine SD Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Barium-140 6.67E+01 2.07E+02 1.13E+02 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Cesium-134 1.27E+01 4.80E+01 2.69E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Cesium-137 2.23E+01 2.83E+01 2.47E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Cobalt-58 -6.42E+00 3.14E+01 2.10E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Cobalt-60 3.13E+00 3.74E+01 2.11E+01 pCi/kg 235

Sediment Sample Results DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Iron-55 2.36E+03 1.27E+04 8.15E+03 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Iron-59 2.07E+01 1.07E+02 5.90E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Lanthanum-140 -1.37E+00 5.41E+01 3.30E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Manganese-54 -2.57E+00 4.17E+01 2.40E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Nickel-63 -2.73E+02 1.26E+03 7.41E+02 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Niobium-95 -3.18E+00 4.25E+01 2.63E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Total Strontium 1.96E+02 1.23E+03 7.56E+02 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Zinc-65 3.02E+01 1.08E+02 5.84E+01 pCi/kg DCM Diablo Cove Marine(533311002) - SD 21-Jan-21 Zirconium-95 -1.00E+01 5.49E+01 3.61E+01 pCi/kg MDO Montana de Oro SD Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units MDO Montana de Oro(532388003) - SD 25-Jan-21 Barium-140 4.80E+01 1.67E+02 8.92E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Cesium-134 1.81E+01 3.20E+01 2.44E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Cesium-137 2.49E+01 2.49E+01 3.52E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Cobalt-58 1.12E+00 3.06E+01 1.78E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Cobalt-60 1.59E+01 3.93E+01 2.04E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Iron-55 1.05E+03 1.18E+04 7.57E+03 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Iron-59 2.44E+00 6.48E+01 3.87E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Lanthanum-140 -2.58E+01 2.49E+01 2.94E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Manganese-54 -1.01E+01 3.03E+01 2.32E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Nickel-63 7.37E+02 1.98E+03 1.21E+03 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Niobium-95 8.55E+00 3.47E+01 2.09E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Total Strontium -1.09E+02 1.50E+03 8.80E+02 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Zinc-65 -1.63E+01 7.18E+01 5.08E+01 pCi/kg MDO Montana de Oro(532388003) - SD 25-Jan-21 Zirconium-95 -1.37E+01 4.62E+01 3.08E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Barium-140 -2.40E+00 1.86E+02 1.05E+02 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Cesium-134 1.54E+00 3.51E+01 2.01E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Cesium-137 3.53E+01 3.53E+01 3.34E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Cobalt-58 -8.31E+00 3.68E+01 2.36E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Cobalt-60 6.29E+00 4.30E+01 2.34E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Iron-55 -2.28E+03 1.30E+04 8.88E+03 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Iron-59 -2.02E+00 5.99E+01 3.70E+01 pCi/kg 236

Sediment Sample Results MDO Montana de Oro(562869005) - SD 18-Nov-21 Lanthanum-140 1.82E+01 9.64E+01 5.21E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Manganese-54 1.24E+01 4.00E+01 2.17E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Nickel-63 3.62E+02 3.26E+03 1.96E+03 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Niobium-95 -1.47E+00 3.25E+01 2.16E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Total Strontium 7.17E+02 9.37E+02 6.90E+02 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Zinc-65 -4.53E+01 8.26E+01 6.80E+01 pCi/kg MDO Montana de Oro(562869005) - SD 18-Nov-21 Zirconium-95 7.03E-01 5.81E+01 3.35E+01 pCi/kg PMO Pismo Beach SD Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units PMO Pismo Beach(532388001) - SD 25-Jan-21 Barium-140 -3.77E+01 3.43E+02 2.02E+02 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Cesium-134 9.90E+01 9.90E+01 8.49E+01 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Cesium-137 -1.26E+01 7.11E+01 4.32E+01 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Cobalt-58 -1.77E+00 5.26E+01 3.13E+01 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Cobalt-60 -6.76E-01 5.36E+01 3.29E+01 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Iron-55 1.41E+03 1.30E+04 8.34E+03 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Iron-59 8.02E+01 1.68E+02 1.09E+02 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Lanthanum-140 5.74E+00 9.25E+01 5.16E+01 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Manganese-54 4.10E+00 7.29E+01 4.25E+01 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Nickel-63 2.86E+02 2.00E+03 1.20E+03 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Niobium-95 2.97E+01 6.85E+01 4.09E+01 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Total Strontium 2.93E+02 1.29E+03 8.04E+02 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Zinc-65 9.95E+01 1.15E+02 1.05E+02 pCi/kg PMO Pismo Beach(532388001) - SD 25-Jan-21 Zirconium-95 1.32E+02 1.43E+02 1.09E+02 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Barium-140 4.78E+01 3.25E+02 1.82E+02 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Cesium-134 2.23E+01 7.92E+01 4.41E+01 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Cesium-137 2.98E+01 6.17E+01 3.80E+01 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Cobalt-58 1.79E+01 3.00E+01 3.19E+01 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Cobalt-60 -8.47E+00 5.94E+01 3.64E+01 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Iron-55 4.16E+02 8.51E+03 5.85E+03 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Iron-59 -5.49E+00 1.60E+02 9.66E+01 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Lanthanum-140 -9.32E+00 1.24E+02 7.59E+01 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Manganese-54 2.32E+01 6.81E+01 3.78E+01 pCi/kg 237

Sediment Sample Results PMO Pismo Beach(562869002) - SD 18-Nov-21 Nickel-63 3.48E+02 3.11E+03 1.87E+03 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Niobium-95 2.10E+01 7.45E+01 4.13E+01 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Total Strontium -2.78E+02 1.42E+03 8.19E+02 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Zinc-65 -7.89E+01 1.63E+02 1.16E+02 pCi/kg PMO Pismo Beach(562869002) - SD 18-Nov-21 Zirconium-95 4.84E+00 1.16E+02 6.61E+01 pCi/kg 238

Vegetation Sample Results 3C1 Household Garden VG Brdleaf Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 3C1 Household Garden(532734002) - VG Brdleaf 21-Jan-21 Cesium-134 1.52E+00 1.02E+01 6.76E+00 pCi/kg 3C1 Household Garden(532734002) - VG Brdleaf 21-Jan-21 Cesium-137 -1.68E+00 8.85E+00 5.48E+00 pCi/kg 3C1 Household Garden(532734002) - VG Brdleaf 21-Jan-21 Iodine-131 1.16E+00 1.02E+01 5.84E+00 pCi/kg 3C1 Household Garden(541240002) - VG Brdleaf 22-Apr-21 Cesium-134 5.17E+00 1.29E+01 7.46E+00 pCi/kg 3C1 Household Garden(541240002) - VG Brdleaf 22-Apr-21 Cesium-137 1.52E+00 1.24E+01 7.54E+00 pCi/kg 3C1 Household Garden(541240002) - VG Brdleaf 22-Apr-21 Iodine-131 -7.69E+00 1.93E+01 1.23E+01 pCi/kg 3C1 Household Garden(557032001) - VG Brdleaf 23-Sep-21 Cesium-134 9.63E-01 1.00E+01 6.05E+00 pCi/kg 3C1 Household Garden(557032001) - VG Brdleaf 23-Sep-21 Cesium-137 -1.02E+00 8.20E+00 5.02E+00 pCi/kg 3C1 Household Garden(557032001) - VG Brdleaf 23-Sep-21 Iodine-131 -8.39E+00 1.27E+01 1.01E+01 pCi/kg 3C1 Household Garden(562873001) - VG Brdleaf 23-Nov-21 Cesium-134 -5.99E+00 5.47E+00 4.81E+00 pCi/kg 3C1 Household Garden(562873001) - VG Brdleaf 23-Nov-21 Cesium-137 1.09E+00 6.27E+00 3.66E+00 pCi/kg 3C1 Household Garden(562873001) - VG Brdleaf 23-Nov-21 Iodine-131 1.94E+00 1.07E+01 6.61E+00 pCi/kg 3C1 Household Garden Fruit VG Fruit Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 3C1 Household Garden Fruit(532734001) - VG Fruit 21-Jan-21 Cesium-134 -2.32E-01 5.73E+00 3.52E+00 pCi/kg 3C1 Household Garden Fruit(532734001) - VG Fruit 21-Jan-21 Cesium-137 -1.61E+00 5.54E+00 4.61E+00 pCi/kg 3C1 Household Garden Fruit(532734001) - VG Fruit 21-Jan-21 Iodine-131 4.19E+00 6.57E+00 4.04E+00 pCi/kg 3C1 Household Garden Fruit(541888001) - VG Fruit 22-Apr-21 Cesium-134 -7.89E-01 5.22E+00 3.29E+00 pCi/kg 3C1 Household Garden Fruit(541888001) - VG Fruit 22-Apr-21 Cesium-137 -6.81E-01 4.38E+00 2.73E+00 pCi/kg 3C1 Household Garden Fruit(541888001) - VG Fruit 22-Apr-21 Iodine-131 9.15E-01 7.36E+00 4.25E+00 pCi/kg 3C1 Household Garden Fruit(557038001) - VG Fruit 23-Sep-21 Cesium-134 -1.24E+00 4.77E+00 3.09E+00 pCi/kg 3C1 Household Garden Fruit(557038001) - VG Fruit 23-Sep-21 Cesium-137 3.60E+00 4.93E+00 4.36E+00 pCi/kg 3C1 Household Garden Fruit(557038001) - VG Fruit 23-Sep-21 Iodine-131 1.99E+00 8.00E+00 4.61E+00 pCi/kg 3C1 Household Garden Fruit(562873002) - VG Fruit 23-Nov-21 Cesium-134 7.86E-01 4.04E+00 2.37E+00 pCi/kg 3C1 Household Garden Fruit(562873002) - VG Fruit 23-Nov-21 Cesium-137 3.03E-01 4.02E+00 2.36E+00 pCi/kg 3C1 Household Garden Fruit(562873002) - VG Fruit 23-Nov-21 Iodine-131 9.02E-01 7.00E+00 3.96E+00 pCi/kg 5F2 Cal Poly Farm VG Brdleaf 239

Vegetation Sample Results Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 5F2 Cal Poly Farm(531170003) - VG Brdleaf 12-Jan-21 Cesium-134 1.38E+00 7.78E+00 5.10E+00 pCi/kg 5F2 Cal Poly Farm(531170003) - VG Brdleaf 12-Jan-21 Cesium-137 1.14E+00 7.17E+00 4.11E+00 pCi/kg 5F2 Cal Poly Farm(531170003) - VG Brdleaf 12-Jan-21 Iodine-131 -1.05E+00 7.64E+00 4.61E+00 pCi/kg 5F2 Cal Poly Farm(533888001) - VG Brdleaf 1-Feb-21 Cesium-134 3.28E+00 1.05E+01 6.30E+00 pCi/kg 5F2 Cal Poly Farm(533888001) - VG Brdleaf 1-Feb-21 Cesium-137 3.46E+00 1.12E+01 6.70E+00 pCi/kg 5F2 Cal Poly Farm(533888001) - VG Brdleaf 1-Feb-21 Iodine-131 1.69E+00 1.16E+01 7.34E+00 pCi/kg 5F2 Cal Poly Farm(535391001) - VG Brdleaf 8-Mar-21 Cesium-134 -5.09E-01 1.10E+01 6.76E+00 pCi/kg 5F2 Cal Poly Farm(535391001) - VG Brdleaf 8-Mar-21 Cesium-137 -5.45E+00 8.96E+00 6.43E+00 pCi/kg 5F2 Cal Poly Farm(535391001) - VG Brdleaf 8-Mar-21 Iodine-131 -5.70E-01 1.48E+01 8.60E+00 pCi/kg 5F2 Cal Poly Farm(540874001) - VG Brdleaf 13-Apr-21 Cesium-134 -2.19E-01 7.70E+00 4.72E+00 pCi/kg 5F2 Cal Poly Farm(540874001) - VG Brdleaf 13-Apr-21 Cesium-137 -1.59E+00 6.99E+00 4.41E+00 pCi/kg 5F2 Cal Poly Farm(540874001) - VG Brdleaf 13-Apr-21 Iodine-131 -5.78E-01 2.65E+01 1.54E+01 pCi/kg 5F2 Cal Poly Farm(542715001) - VG Brdleaf 4-May-21 Cesium-134 2.22E+00 7.08E+00 4.06E+00 pCi/kg 5F2 Cal Poly Farm(542715001) - VG Brdleaf 4-May-21 Cesium-137 2.05E+00 6.37E+00 3.86E+00 pCi/kg 5F2 Cal Poly Farm(542715001) - VG Brdleaf 4-May-21 Iodine-131 6.68E-01 6.48E+00 3.80E+00 pCi/kg 5F2 Cal Poly Farm(547172002) - VG Brdleaf 14-Jun-21 Cesium-134 9.67E+00 1.40E+01 1.04E+01 pCi/kg 5F2 Cal Poly Farm(547172002) - VG Brdleaf 14-Jun-21 Cesium-137 2.10E+00 1.01E+01 6.75E+00 pCi/kg 5F2 Cal Poly Farm(547172002) - VG Brdleaf 14-Jun-21 Iodine-131 -5.55E+00 1.17E+01 7.96E+00 pCi/kg 5F2 Cal Poly Farm(548922002) - VG Brdleaf 13-Jul-21 Cesium-134 -2.49E+00 1.27E+01 7.64E+00 pCi/kg 5F2 Cal Poly Farm(548922002) - VG Brdleaf 13-Jul-21 Cesium-137 2.57E+00 1.23E+01 7.43E+00 pCi/kg 5F2 Cal Poly Farm(548922002) - VG Brdleaf 13-Jul-21 Iodine-131 4.25E+00 1.76E+01 1.03E+01 pCi/kg 5F2 Cal Poly Farm(550640001) - VG Brdleaf 2-Aug-21 Cesium-134 -2.37E+00 1.09E+01 8.59E+00 pCi/kg 5F2 Cal Poly Farm(550640001) - VG Brdleaf 2-Aug-21 Cesium-137 4.37E+00 1.09E+01 6.45E+00 pCi/kg 5F2 Cal Poly Farm(550640001) - VG Brdleaf 2-Aug-21 Iodine-131 -1.70E+00 1.05E+01 6.58E+00 pCi/kg 5F2 Cal Poly Farm(555304001) - VG Brdleaf 7-Sep-21 Cesium-134 2.72E+00 1.69E+01 9.59E+00 pCi/kg 5F2 Cal Poly Farm(555304001) - VG Brdleaf 7-Sep-21 Cesium-137 5.54E+00 1.59E+01 9.61E+00 pCi/kg 5F2 Cal Poly Farm(555304001) - VG Brdleaf 7-Sep-21 Iodine-131 8.87E-01 2.00E+01 1.18E+01 pCi/kg 5F2 Cal Poly Farm(558857001) - VG Brdleaf 12-Oct-21 Cesium-134 -4.11E+00 1.23E+01 8.18E+00 pCi/kg 5F2 Cal Poly Farm(558857001) - VG Brdleaf 12-Oct-21 Cesium-137 3.67E+00 1.24E+01 7.39E+00 pCi/kg 5F2 Cal Poly Farm(558857001) - VG Brdleaf 12-Oct-21 Iodine-131 1.36E+00 2.12E+01 1.25E+01 pCi/kg 5F2 Cal Poly Farm(562132002) - VG Brdleaf 16-Nov-21 Cesium-134 1.02E+01 1.30E+01 8.39E+00 pCi/kg 5F2 Cal Poly Farm(562132002) - VG Brdleaf 16-Nov-21 Cesium-137 1.81E+00 1.10E+01 6.57E+00 pCi/kg 5F2 Cal Poly Farm(562132002) - VG Brdleaf 16-Nov-21 Iodine-131 2.69E+00 1.29E+01 7.57E+00 pCi/kg 240

Vegetation Sample Results 5F2 Cal Poly Farm(564003001) - VG Brdleaf 6-Dec-21 Cesium-134 -2.23E-01 5.94E+00 3.64E+00 pCi/kg I I 5F2 Cal Poly Farm(564003001) - VG Brdleaf 6-Dec-21 Cesium-137 4.38E+00 5.21E+00 4.65E+00 pCi/kg 5F2 Cal Poly Farm(564003001) - VG Brdleaf 6-Dec-21 Iodine-131 -1.33E+00 6.29E+00 3.76E+00 pCi/kg 6C1 Household Garden VG Brdleaf Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 6C1 Household Garden(531170001) - VG Brdleaf 11-Jan-21 Cesium-134 -6.25E+00 8.75E+00 9.11E+00 pCi/kg 6C1 Household Garden(531170001) - VG Brdleaf 11-Jan-21 Cesium-137 1.83E+00 8.33E+00 5.00E+00 pCi/kg 6C1 Household Garden(531170001) - VG Brdleaf 11-Jan-21 Iodine-131 -5.80E+00 1.09E+01 9.20E+00 pCi/kg 6C1 Household Garden(541240001) - VG Brdleaf 21-Apr-21 Cesium-134 5.27E+00 1.34E+01 7.86E+00 pCi/kg 6C1 Household Garden(541240001) - VG Brdleaf 21-Apr-21 Cesium-137 -3.33E+00 1.29E+01 8.04E+00 pCi/kg 6C1 Household Garden(541240001) - VG Brdleaf 21-Apr-21 Iodine-131 3.64E+00 2.02E+01 1.25E+01 pCi/kg 6C1 Household Garden(556652001) - VG Brdleaf 21-Sep-21 Cesium-134 -1.27E+00 8.40E+00 5.59E+00 pCi/kg 6C1 Household Garden(556652001) - VG Brdleaf 21-Sep-21 Cesium-137 -3.55E+00 8.03E+00 5.43E+00 pCi/kg 6C1 Household Garden(556652001) - VG Brdleaf 21-Sep-21 Iodine-131 -1.06E+00 1.02E+01 6.71E+00 pCi/kg 6C1 Household Garden(562729001) - VG Brdleaf 17-Nov-21 Cesium-134 -1.44E+00 1.35E+01 8.36E+00 pCi/kg 6C1 Household Garden(562729001) - VG Brdleaf 17-Nov-21 Cesium-137 5.72E+00 1.31E+01 7.77E+00 pCi/kg 6C1 Household Garden(562729001) - VG Brdleaf 17-Nov-21 Iodine-131 6.26E-01 1.83E+01 1.05E+01 pCi/kg 7C1 Pecho Creek Ruins VG Brdleaf Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7C1 Pecho Creek Ruins(531170005) - VG Brdleaf 12-Jan-21 Cesium-134 -1.91E+00 1.20E+01 7.50E+00 pCi/kg 7C1 Pecho Creek Ruins(531170005) - VG Brdleaf 12-Jan-21 Cesium-137 -5.64E+00 1.23E+01 1.12E+01 pCi/kg 7C1 Pecho Creek Ruins(531170005) - VG Brdleaf 12-Jan-21 Iodine-131 6.80E-01 1.39E+01 7.96E+00 pCi/kg 7C1 Pecho Creek Ruins(533888002) - VG Brdleaf 1-Feb-21 Cesium-134 -3.18E+00 1.04E+01 6.66E+00 pCi/kg 7C1 Pecho Creek Ruins(533888002) - VG Brdleaf 1-Feb-21 Cesium-137 -2.28E+00 1.02E+01 6.25E+00 pCi/kg 7C1 Pecho Creek Ruins(533888002) - VG Brdleaf 1-Feb-21 Iodine-131 -5.05E+00 1.32E+01 8.62E+00 pCi/kg 7C1 Pecho Creek Ruins(535391003) - VG Brdleaf 8-Mar-21 Cesium-134 -1.13E+00 1.40E+01 1.11E+01 pCi/kg 7C1 Pecho Creek Ruins(535391003) - VG Brdleaf 8-Mar-21 Cesium-137 -6.52E-01 1.28E+01 7.48E+00 pCi/kg 7C1 Pecho Creek Ruins(535391003) - VG Brdleaf 8-Mar-21 Iodine-131 -2.77E+00 1.55E+01 9.57E+00 pCi/kg 7C1 Pecho Creek Ruins(540874002) - VG Brdleaf 13-Apr-21 Cesium-134 1.76E+00 1.09E+01 6.56E+00 pCi/kg 7C1 Pecho Creek Ruins(540874002) - VG Brdleaf 13-Apr-21 Cesium-137 1.94E+00 1.32E+01 8.95E+00 pCi/kg 241

Vegetation Sample Results 7C1 Pecho Creek Ruins(540874002) - VG Brdleaf 13-Apr-21 Iodine-131 1.15E+01 4.06E+01 2.35E+01 pCi/kg 7C1 Pecho Creek Ruins(542715002) - VG Brdleaf 4-May-21 Cesium-134 -1.14E+00 8.64E+00 6.26E+00 pCi/kg 7C1 Pecho Creek Ruins(542715002) - VG Brdleaf 4-May-21 Cesium-137 6.99E+00 7.78E+00 1.08E+01 pCi/kg 7C1 Pecho Creek Ruins(542715002) - VG Brdleaf 4-May-21 Iodine-131 2.60E-01 1.01E+01 5.81E+00 pCi/kg 7C1 Pecho Creek Ruins(547172004) - VG Brdleaf 14-Jun-21 Cesium-134 1.06E-01 7.59E+00 4.53E+00 pCi/kg 7C1 Pecho Creek Ruins(547172004) - VG Brdleaf 14-Jun-21 Cesium-137 7.10E+00 7.10E+00 5.45E+00 pCi/kg 7C1 Pecho Creek Ruins(547172004) - VG Brdleaf 14-Jun-21 Iodine-131 2.33E+00 1.01E+01 6.23E+00 pCi/kg 7C1 Pecho Creek Ruins(548922004) - VG Brdleaf 13-Jul-21 Cesium-134 -5.88E+00 1.68E+01 1.05E+01 pCi/kg 7C1 Pecho Creek Ruins(548922004) - VG Brdleaf 13-Jul-21 Cesium-137 9.79E+00 1.67E+01 1.04E+01 pCi/kg 7C1 Pecho Creek Ruins(548922004) - VG Brdleaf 13-Jul-21 Iodine-131 1.09E+01 2.15E+01 1.31E+01 pCi/kg 7C1 Pecho Creek Ruins(550640002) - VG Brdleaf 2-Aug-21 Cesium-134 9.61E+00 1.38E+01 8.71E+00 pCi/kg 7C1 Pecho Creek Ruins(550640002) - VG Brdleaf 2-Aug-21 Cesium-137 4.27E-01 1.20E+01 6.94E+00 pCi/kg 7C1 Pecho Creek Ruins(550640002) - VG Brdleaf 2-Aug-21 Iodine-131 -1.84E+00 1.22E+01 7.39E+00 pCi/kg 7C1 Pecho Creek Ruins(555304002) - VG Brdleaf 7-Sep-21 Cesium-134 -7.28E+00 1.41E+01 9.81E+00 pCi/kg 7C1 Pecho Creek Ruins(555304002) - VG Brdleaf 7-Sep-21 Cesium-137 4.58E+00 1.44E+01 8.54E+00 pCi/kg 7C1 Pecho Creek Ruins(555304002) - VG Brdleaf 7-Sep-21 Iodine-131 -5.65E+00 2.16E+01 1.30E+01 pCi/kg 7C1 Pecho Creek Ruins(558857002) - VG Brdleaf 12-Oct-21 Cesium-134 1.62E+00 7.67E+00 4.59E+00 pCi/kg 7C1 Pecho Creek Ruins(558857002) - VG Brdleaf 12-Oct-21 Cesium-137 -1.03E+00 7.08E+00 4.38E+00 pCi/kg 7C1 Pecho Creek Ruins(558857002) - VG Brdleaf 12-Oct-21 Iodine-131 -1.18E+01 1.13E+01 1.36E+01 pCi/kg 7C1 Pecho Creek Ruins(562132005) - VG Brdleaf 16-Nov-21 Cesium-134 6.54E+00 1.50E+01 8.71E+00 pCi/kg 7C1 Pecho Creek Ruins(562132005) - VG Brdleaf 16-Nov-21 Cesium-137 -3.13E+00 1.27E+01 8.25E+00 pCi/kg 7C1 Pecho Creek Ruins(562132005) - VG Brdleaf 16-Nov-21 Iodine-131 -2.74E+00 1.40E+01 8.64E+00 pCi/kg 7C1 Pecho Creek Ruins(564003002) - VG Brdleaf 6-Dec-21 Cesium-134 5.85E-01 8.23E+00 4.92E+00 pCi/kg 7C1 Pecho Creek Ruins(564003002) - VG Brdleaf 6-Dec-21 Cesium-137 -1.82E+00 6.57E+00 4.12E+00 pCi/kg 7C1 Pecho Creek Ruins(564003002) - VG Brdleaf 6-Dec-21 Iodine-131 1.72E+00 8.35E+00 4.77E+00 pCi/kg 7E1 Avila Valley Barn VG Brdleaf Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7E1 Avila Valley Barn(532734003) - VG Brdleaf 21-Jan-21 Cesium-134 2.86E+00 9.22E+00 5.46E+00 pCi/kg 7E1 Avila Valley Barn(532734003) - VG Brdleaf 21-Jan-21 Cesium-137 -8.73E+00 7.51E+00 8.15E+00 pCi/kg 7E1 Avila Valley Barn(532734003) - VG Brdleaf 21-Jan-21 Iodine-131 1.16E+00 8.84E+00 5.06E+00 pCi/kg 7E1 Avila Valley Barn(541793001) - VG Brdleaf 20-Apr-21 Cesium-134 7.40E-01 6.18E+00 5.15E+00 pCi/kg 7E1 Avila Valley Barn(541793001) - VG Brdleaf 20-Apr-21 Cesium-137 6.62E-01 5.82E+00 3.35E+00 pCi/kg 242

Vegetation Sample Results 7E1 Avila Valley Barn(541793001) - VG Brdleaf 20-Apr-21 Iodine-131 -2.21E+00 9.32E+00 6.52E+00 pCi/kg 7E1 Avila Valley Barn(556948001) - VG Brdleaf 20-Sep-21 Cesium-134 -1.40E+00 6.57E+00 4.23E+00 pCi/kg 7E1 Avila Valley Barn(556948001) - VG Brdleaf 20-Sep-21 Cesium-137 -8.23E-01 5.21E+00 3.27E+00 pCi/kg 7E1 Avila Valley Barn(556948001) - VG Brdleaf 20-Sep-21 Iodine-131 -4.73E-01 1.13E+01 7.45E+00 pCi/kg 7E1 Avila Valley Barn(562132004) - VG Brdleaf 16-Nov-21 Cesium-134 -5.16E-01 8.29E+00 5.81E+00 pCi/kg 7E1 Avila Valley Barn(562132004) - VG Brdleaf 16-Nov-21 Cesium-137 -5.40E+00 1.07E+01 7.83E+00 pCi/kg 7E1 Avila Valley Barn(562132004) - VG Brdleaf 16-Nov-21 Iodine-131 4.00E+00 9.05E+00 9.24E+00 pCi/kg 7G1 Arroyo Grande VG Brdleaf Sample Name Date Collected Nuclide Result MDC 2 Sigma TPU Units 7G1 Arroyo Grande(531170004) - VG Brdleaf 12-Jan-21 Cesium-134 -1.47E+00 7.45E+00 4.64E+00 pCi/kg 7G1 Arroyo Grande(531170004) - VG Brdleaf 12-Jan-21 Cesium-137 -3.49E-01 6.97E+00 4.66E+00 pCi/kg 7G1 Arroyo Grande(531170004) - VG Brdleaf 12-Jan-21 Iodine-131 3.29E+00 8.51E+00 4.97E+00 pCi/kg 7G1 Arroyo Grande(533888003) - VG Brdleaf 1-Feb-21 Cesium-134 -1.45E+00 1.27E+01 7.55E+00 pCi/kg 7G1 Arroyo Grande(533888003) - VG Brdleaf 1-Feb-21 Cesium-137 -1.86E-01 1.15E+01 6.62E+00 pCi/kg 7G1 Arroyo Grande(533888003) - VG Brdleaf 1-Feb-21 Iodine-131 -2.97E+00 1.18E+01 8.21E+00 pCi/kg 7G1 Arroyo Grande(535391002) - VG Brdleaf 8-Mar-21 Cesium-134 -3.77E+00 8.24E+00 6.43E+00 pCi/kg 7G1 Arroyo Grande(535391002) - VG Brdleaf 8-Mar-21 Cesium-137 -3.04E+00 8.57E+00 7.91E+00 pCi/kg 7G1 Arroyo Grande(535391002) - VG Brdleaf 8-Mar-21 Iodine-131 -1.17E-01 1.08E+01 6.24E+00 pCi/kg 7G1 Arroyo Grande(540874003) - VG Brdleaf 13-Apr-21 Cesium-134 7.98E-01 8.60E+00 4.93E+00 pCi/kg 7G1 Arroyo Grande(540874003) - VG Brdleaf 13-Apr-21 Cesium-137 6.07E+00 9.96E+00 6.29E+00 pCi/kg 7G1 Arroyo Grande(540874003) - VG Brdleaf 13-Apr-21 Iodine-131 1.81E+01 3.59E+01 2.20E+01 pCi/kg 7G1 Arroyo Grande(542715003) - VG Brdleaf 4-May-21 Cesium-134 -4.74E-01 9.47E+00 5.53E+00 pCi/kg 7G1 Arroyo Grande(542715003) - VG Brdleaf 4-May-21 Cesium-137 1.68E+00 9.15E+00 5.55E+00 pCi/kg 7G1 Arroyo Grande(542715003) - VG Brdleaf 4-May-21 Iodine-131 -8.97E-01 1.23E+01 7.42E+00 pCi/kg 7G1 Arroyo Grande(547172003) - VG Brdleaf 14-Jun-21 Cesium-134 -4.10E+00 4.97E+00 4.73E+00 pCi/kg 7G1 Arroyo Grande(547172003) - VG Brdleaf 14-Jun-21 Cesium-137 -2.61E-01 4.91E+00 3.06E+00 pCi/kg 7G1 Arroyo Grande(547172003) - VG Brdleaf 14-Jun-21 Iodine-131 2.32E-01 6.91E+00 4.13E+00 pCi/kg 7G1 Arroyo Grande(548922008) - VG Brdleaf 13-Jul-21 Cesium-134 4.41E+00 8.50E+00 5.21E+00 pCi/kg 7G1 Arroyo Grande(548922008) - VG Brdleaf 13-Jul-21 Cesium-137 1.56E+00 7.51E+00 4.45E+00 pCi/kg 7G1 Arroyo Grande(548922008) - VG Brdleaf 13-Jul-21 Iodine-131 -4.70E-01 1.15E+01 6.69E+00 pCi/kg 7G1 Arroyo Grande(550640003) - VG Brdleaf 2-Aug-21 Cesium-134 -2.20E-01 8.78E+00 5.38E+00 pCi/kg 7G1 Arroyo Grande(550640003) - VG Brdleaf 2-Aug-21 Cesium-137 -2.76E+00 7.97E+00 5.19E+00 pCi/kg 243

Vegetation Sample Results 7G1 Arroyo Grande(550640003) - VG Brdleaf 2-Aug-21 Iodine-131 2.65E+00 8.70E+00 5.02E+00 pCi/kg 7G1 Arroyo Grande(555304003) - VG Brdleaf 7-Sep-21 Cesium-134 5.31E-01 5.70E+00 3.28E+00 pCi/kg 7G1 Arroyo Grande(555304003) - VG Brdleaf 7-Sep-21 Cesium-137 1.60E-01 5.47E+00 3.37E+00 pCi/kg 7G1 Arroyo Grande(555304003) - VG Brdleaf 7-Sep-21 Iodine-131 -1.02E+00 7.76E+00 4.70E+00 pCi/kg 7G1 Arroyo Grande(558857003) - VG Brdleaf 12-Oct-21 Cesium-134 1.42E+00 7.84E+00 4.71E+00 pCi/kg 7G1 Arroyo Grande(558857003) - VG Brdleaf 12-Oct-21 Cesium-137 4.11E-01 6.93E+00 4.14E+00 pCi/kg 7G1 Arroyo Grande(558857003) - VG Brdleaf 12-Oct-21 Iodine-131 -6.14E-01 1.18E+01 6.84E+00 pCi/kg 7G1 Arroyo Grande(562132003) - VG Brdleaf 16-Nov-21 Cesium-134 1.77E+00 1.32E+01 7.72E+00 pCi/kg 7G1 Arroyo Grande(562132003) - VG Brdleaf 16-Nov-21 Cesium-137 -8.09E-01 1.22E+01 7.20E+00 pCi/kg 7G1 Arroyo Grande(562132003) - VG Brdleaf 16-Nov-21 Iodine-131 -7.15E+00 1.37E+01 9.36E+00 pCi/kg 7G1 Arroyo Grande(564003003) - VG Brdleaf 6-Dec-21 Cesium-134 1.57E+00 6.27E+00 3.73E+00 pCi/kg 7G1 Arroyo Grande(564003003) - VG Brdleaf 6-Dec-21 Cesium-137 -1.18E+00 5.18E+00 3.26E+00 pCi/kg 7G1 Arroyo Grande(564003003) - VG Brdleaf 6-Dec-21 Iodine-131 2.35E+00 6.48E+00 3.76E+00 pCi/kg 244

DCL-22-025, 2021 Annual Radiological Environmental Operating Report

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DCL-22-025, 2021 Annual Radiological Environmental Operating Report

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