ML19130A112

Independent Spent Fuel Storage Facility - 2018 Annual Radiological Environmental Operating Report

ML19130A112
Person / Time
Site:	San Onofre
Issue date:	05/07/2019
From:	Bates A Southern California Edison Co
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation
References
Download: ML19130A112 (105)

Text

SOUTHERN CALIFORNIA Al Bates EDISON*~ Manager Regulatory Affairs &

An EDISON INTERNATIONAL Company Nuclear Oversight May 7, 2019 10 CFR 50.36a AUN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, D.C. 20555-0001

Subject:

Docket Nos. 50-206, 50-361, 50-362 and 72-41 2018 Annual Radiological Environmental Operating Report San Onofre Nuclear Generating Station (SONGS) Units 1, 2 and 3 and Independent Spent Fuel Storage Facility

Dear Sir or Madam:

As required by San Onofre Nuclear Generating Station (SONGS) Unit 1 Permanently Defueled Technical Specification (TS) Section D6.9.1.3 and SONGS Units 2 and 3 Permanently Defueled TS Section 5. 7 .1.2, "Annual Radiological Environmental Operating Report," Southern California Edison (SCE) is submitting the 2018 Annual Radiological Environmental Operating Report (AREOR) for SONGS Units 1, 2 and 3. The AREOR covers the operation of SONGS during January 1, 2018 through December 31, 2018 and includes summaries, interpretations, and analyses of trends of the results of the Radiological Environmental Monitoring Program (REMP).

In addition, the AREOR includes the results for direct radiation monitoring near the Independent Spent Fuel Storage Installation.

This letter does not contain any commitments.

If you have any questions or require add_itional information, please contact me at (949) 368-6945.

l_[ru;y-

~cerely,

Enclosure:

2018 San Onofre Nuclear Generating Station Annual Radiological Environmental Operating Report cc: S. Morris, Regional Administrator, NRC Region IV M. G. Vaaler, NRC Project Manager, SONGS Unit~ 1, 2 and 3 I. Schneider, California Department of Public Health

Enclosure 2018 San Onofre Nuclear Generating Station Annual Radiological Environmental Operating Report

San Onofre Nuclear Generating Station 2018 Annual Radiological Environmental Operating Report ED I sON SOUTHERN CALIFORNIA License Numbers:

DPR-13, NPF-10, NPF-15 An EDISON INTERNATIONAL Company

2018AREOR This 2018 Annual Radiological Environmental Operating Report (AREOR) for the San Onofre Nuclear Generating Station (SONGS) fulfills the requirements of Technical Specifications (TS)

Section §06.9.1.3 of SONGS Unit 1 License DPR-13, Section §5.7.1.2 of the permanently defueled SONGS Units 2 and 3 Licenses NPF-10 and NPF-15, respectively, and the Independent Spent Fuel Storage Installation (ISFSI) facility. The 2018 AREOR covers the results of the environmental monitoring performed around SONGS during the time period January 1, 2018 through December 31, 2018.

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2018AREOR Table of Contents 1 Executive Summary ......................................................................................................_. ..... *. 1 2 Radiological Environmental Monitoring Program ................................................................... 2 3

• Land Use Census ....................................................... : ........................................................ 10 4 Quality Assurance ........................................................................ :...................................... 10 5 Program Deviations .......... :........................................ :...................................................1****** 12 6 Conclusion .......................... *................................................................................................12 7 References ..........................................................................................................................12 APPENDIX A. 'SAMPLE TYPE AND SAMPLING LOCATIONS ................................................. 13 APPENDIX B. RESULTS AND DISCUSSIONS OF 2018 ENVIRONMENTAL DATA ................ 24 APPENDIX C.

SUMMARY

OF QUALITY CONTROL PROGRAMS .......................................... 41 APPENDIX D. COMPARISON OF OPERATIONAL TO PREOPERATIONAL DATA ................. 57 APPENDIX E. DEVIATIONS FROM ODCM SAMPLING REQUIREMENTS IN 2018 ................ 67 APPENDIX F. LAND USE CENSUS .........................................................................................70 APPENDIX G. ERRATA TO PREVIOUS AREORs .................................................................... 84 APPENDIX H. CDPH CO-LOCATED TLDs ....... :..............................................*......................... 86 APPENDIX I. ISFSI TLD DATA. ..... **:***************************************************************************************88

. APPENDIX J. OFFSITE GROUND WATER SAMPLING .......................................................... 95 Glossary ............. ,.................. ;..........................................................................................97 FIGURES Figure 1 - Examples of Exposure Pathways ............................................................................... 3 Figure 2 - SONGS 45 mile REMP Radius .................................................................................. 4 Figure 3 ~ SONGS Location ............................... ~ ................................. ,........... .'......................... 5 Figure 4 - SONGS REMP One Mile Radius .............................................................................. 19 Figure 5 - SONGS REMP Two Mile Radius ............................ :................. , ............... :................ 20 Figure 6- SONGS REMP Five Mile Radius **********:** ............................... ~ ................. ,............... 21 Figure 7 - SONGS REMP 30-mile Radius North ............... :........ ,.............................................. 22 Figure 8 - SONGS REMP 45-mile Radius South .......................................................................23 Figure 10-: 1-131 in Aquatic Kelp ...............................................................................................33 Figure 11 - Kelp Sampling Locations .........................................................................................34 Figure 12 - Monthly Average Airborne Particulate Gross Beta Preoperational and Operational Data.for Units 2 and 3, (1976 - 1988) ................................................................................60 Figure 13 - SONGS ISFSI and Selected REMP TLD Locations ................................................ 92 Figure 14 - ISFSI and REMP TLDs *******:************************ ................................... .'....................... 93 Figure 15 - Closest Drinking Water Wells ........................................................... :...................... 96 Page I ii

2018AREOR Acronyms AREOR Annual Radiological Environmental Operating Report CAB Controlled Area Boundary CDPH California Department of Public Health CEAL Contracted Environmental Analysis Laboratory DOE Department of Energy EAB Exclusion Area Boundary EPA U.S. Environmental Protection Agency ISFSI Independent Spent Fuel Storage Installation LLD Lower Limit of Detection LUC Land Use Census MDC Minimum Detectable Concentration MDD Minimum Differential Dose ND Nof Detectable NEI Nuclear Energy Institute NRC U.S. Nuclear Regulatory Commission ODCM Offsite Dose Calculation Manual QA 'Quality Assurance QC Quality Control REMP Radiological Environmental Monitoring Program SAB Site Area Boundary TLD .Thermoluminescent Dosimeter, Page I iii

2018AREOR 1 Executive Summary On June 12, 2013, Southern California Edison notified the Nuclear Regulatory Commission (NRC) that it had permanently ceased operation for both Units 2 and 3 on June 7, 2013. While all power operations have ceased, spent fuel remains stored on site. San Onofre Nuclear Generating Station (hereafter referred to as San Onofre or SONGS) continues to fulfill its regulatory commitment to monitor the environment and potential exposure pathways. The Radiological Environmental Monitoring Program (REMP) supports the conclusion that San Onofre has had an inconsequential radiological impact on the environment and that it is well within applicable state and federal regulations.

The (REMP) includes the sampling of environmental media and measuring radiation levels in the environment surrounding SONGS. Its purpose is to identify any levels of radioactivity br radiation associated with SONGS that have a potential exposure to a member of the general public. This is accomplished through the measurement of direct radiation and by the sampling and analyses of various environmental media, including:

• soil

• shoreline sediment (beach sand)

• air (particulate & iodine)

• local crops

• non-migratory marine species

• kelp

• drinking water

• ocean water

• ocean bottom sediments Samples are analyzed for both naturally occurring and SONGS plant-related radionuclides. A detailed description of the 2018 sampling locations and location maps are included in Appendix A of this report.

The California Department of Public Health (CDPH) Drinking Water and Sanitation Laboratory participated in an inter-laboratory split sampling program with SONGS, including ocean water tritium samples and gamma isotopic samples from various environmental media. The results are discussed in* Appendix C. The CDPH also conducted a direct radiation (TLD) monitoring p~ogram in conjunction with SONGS. Refer to Appendix H.

This report describes the REMP as conducted at SONGS during the period from January 1, 2018 through December 31, 2018. The REMP produces scientifically defensible data indicating SONGS had no significant radiological environmental impact in 2018. This report fulfills applicable license commitments, as described in DPR-13, NPF-10, NPF-15, and the Offsite' Dose Calculation Manual (ODCM).

Beyond the immediate area of the ISFSI, the REMP data collected during 2018, as in previous years, continues to*be representative of background levels. The data is summarized in the Statistical Summary of REMP Data found in Appendix B. The radionuclides cesium-137 (Cs-137) in soil and iodine-131 (1-131) in kelp were detected above the minimum detectable concentration (MDC). Cs-137 in soil is attributable to fallout from nuclear weapons testing and sources external to SONGS such as the Chernobyl accident. 1-131 is detected in kelp due to the sewage discharge of medically administered 1-131 and to the high biomagnification factor for iodine in kelp. These isotopes have been detected at indicator locations, as well as at control locations, in past years. Naturally occurring radionuclides, 'including beryllium-? (Be-7),

potassium-40 (K-40), thorium-228 (Th-228) and thorium-230 (Th-230) were de_tected in both Page 11

2018 AREOR control and indicator locations at similar concentrations and are not related to SONGS. Refer to Appendix B for a more detail~d discussion.

There is a natural and manmade radiation background. Natural background is comprised of the terrestrial and cosmic radiation sources while manmade background results from past weapons testing fallou\ and routine medical applications. Prior to the construction of SONGS, environmental samples and measurements were collected and analyzed to determine the baseline natural radiation levels. The results from the indicator stations are compared to this pre-operational data, as well as control samples, to evaluate if changes in any radiation levels can be attributed to SONGS or other causes such as natural variations in the environment or

\

manmade contributions.

In summary, the environmental monitoring data collected during 2018 supports a conclusion of no adverse effect on the population or the environment from SONGS. The radiation exposures to people living in the surrounding area from SONGS remains less than 1 mrem per year, which is a small fraction of the radiation exposures in the environment from the natural background from terrestrial and cosmic radiation.

2 Radiological Environmental Monitoring Program Program Overview The purpose of the REMP is to characterize the radiological environment outside of the power 1

block and to detect potential radiological impacts resulting from activities at SONGS Units 2 and

3. The REMP monitors credible pathways of exposure to the public and fulfills the radiological environmental monitoring requirements of the ODCM.

Exposure pathways are the different routes by which people can potentially .be exposed to radiation or radioactive materials. The pathways may be characterized into four general types, shown below along with a brief description of the monitoring as performed at SONGS:

• AIRBORNE. The airborne pathway represents the inhalation intake of airborne radioactive materials. This pathway is sampled in areas around SONGS by continuously drawing air through specialized filters and charcoal cartridges 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> a day, 7 days a week. Although both units at SONGS have been shut down since January 2012, these air samples continue to be collected on a weekly basis.

• WATERBORNE. The waterborne pathways include the exposure to radioactive materials accumulated in aquatic biota (fish, shellfish) and in shoreline sediments.

These pathways are assessed through the collection of fish and shellfish samples in the environment around the plant. Sediment samples are also collected to evaluate any long-term buildup in the environment.

• INGESTION. The ingestion pathway includes broadleaf vegetation, agricultural products, and food products. Atmospheric releases from the plant can deposit on these food products, representing an intake exposure pathway through the consumption of these food products. Samples of crops (e.g., tomato, lettuce, sorrel) are collected from the local area around the plant to evaluate any impact on this pathway.

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2018 AREOR

• DIRECT RADIATION . The direct radiation pathway represents the external exposure from sources on the plant site and directly from any radioactive effluents released to the air or water. This direct environmental radiation dose is measured through the use of direct measurement dosimeters, such as thermoluminescent dosimeters (TLDs) that are placed around the plant site and in the local environment.

Figure 1 - Examples of Exposure Pathways Page 13

2018 AREOR Site Area and Description San Onofre Nuclear Generating Station is located next to San Onofre State Beach , adjoining Camp Pendleton Marine Corps Base, in San Diego County, 64 miles south of Los Angeles ,

California. At this time there are no operating reactors , but in the past, there were three operating pressurized water reactors with a total rated capacity of 2664 net megawatts electrical.

Figure 2 - SONGS 45 mile REMP Radius Unit 1, rated at 410 net megawatts electrical, was supplied by Westinghouse Electric Company.

Unit 1 began commercial operation on January 1, 1968. The unit was permanently shut down on November 30, 1992, and has been decommissioned . By August 31 , 2004, all fuel was transferred to the Independent Spent Fuel Storage Installation (ISFSI). By November 29, 2006, all remaining monitored effluent pathways were permanently removed from service or routed to Unit 2 discharge to the outfall. Unit 1 is owned by Southern California Edison (80%) and San Diego Gas and Electric (20%).

Unit 2 and Unit 3 were supplied by Combustion Engineering , Inc., with turbine generators supplied by G.E.C. Turbine Generators, Ltd ., of England. The units began commercial operation on August 18, 1983, and April 1, 1984, respectively, and were rated at 1127 net megawatts electrical each . The twin units are owned by Southern California Edison (78.21%) ,

San Diego Gas and Electric (20%) , and the City of Riverside (1.79%) .

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2018 AREOR ArrowheBd r,:,. BJg'a.;

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~':r~e~;;:~!:@ TopMlga San 8</rn National M alibu e Tern{ecula Sa nta Cat~Hllii rsl*nd Sa11 Onofre Nuclear Gene,a.tlng Statio n Pacific Ocean y

Figure 3 - SONGS Location Effective December 29 , 2006 , the City of Anaheim transferred its ownership interests in San Onofre Units 2 and 3 and the entitlement to the Units 2 and 3 output to Southern California Edison Company, except that it retains its ownership interests in its spent nuclear fuel and Units 2 and 3's independent spent fuel storage installation located on the facility's site. In addition ,

the City of Anaheim retains financial responsibility for its spent fuel and for a portion of the Units 2 and 3 decommissioning costs . The City of Anaheim remains a licensee for purposes of its retained interests and liabilities. Southern California Edison notified the Nuclear Regulatory Commission (NRC) on June 12, 2013, that it had permanently ceased operation of Units 2 and 3 on June 7, 2013. The NRC notification , called a Certification of Permanent Cessation of Power Operations, sets the stage for SCE to begin preparations for decommissioning .

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2018AREOR Sample Collection and Analyses Samples of environmental media were obtained in accordance with the requirements of the ODCM .to meet the regulatory requirements. Refer to Appendix A for a complete list of REMP sample locations as described in Table 5-4 of the ODCM.

Indicator samples close to SONGS are compared to control samples located in areas that are beyond the measurable influence of San Onofre. The control sample results are considered representative of background levels with no potential for contribution from releases and sources at SONGS. The control stations also serve as indicators of radioactive sources unrelated to activities at SONGS, such as sewage plant discharges of nuclear medicine applications or nuclear fallout attributable to external sources (legacy fallout from nuclear weapons, the nuclear accident at Chernobyl, and the nuclear accident at Fukushima). The indicator location samples are used to detect environmental radioactivity attributable to SONGS. Indicator sample locations can be located either onsite or offsite.

As described in Section 4, below, the SONGS REMP is conducted in accordance with a Quality Assurance Program, meeting the requirements of NRC Regulatory Guide 4.15, Rev. 1.

Samples are c*ollected using approved methods; radiochemical analyses of these samples are performed using standardized analytical methods. The Contracted Environmental Analysis Laboratory (CEAL) participates in an inter-laboratory comparison program in partial fulfillment of the quality assurance requirements for environmental monitoring. The CEAL participated in cross check programs which meet the intent of Reg. Guide 4.15. See Appendix C for additional details.

Detection Limit Terminology The United States Nuclear Regulatory Commission (NRC) requires that equipment and analytical methods used for radiological monitoring must be able to detect specified minimum limits for the type sample and the radionuclide of the analysis. The a priori detection capability for the analytical system used for the measurement is referred to as the Lower Limit of Detection (LLD). This LLD ensures that radiation measurements are sufficiently sensitive to detect any levels of concern and small changes in the environment. Samples with no detectable radiation levels are typically referred to as less than the minimum detectable concentration (MDC). The MDC is evaluated for each sample and is used to ensure that the specific analysis has sufficient sensitivity to detect levels consistent with the requirements for analysis by the system LLD. For a more thorough discussion, refer to NUREG/CR-4007.

• Lower Limit of Detection (LLD) - The LLD is the a priori (before the fact) lower limit of detection for the method used for the analysis. It is a measure of the detection capability for the analytical method and not for any single sample analysis. This value is calculated for each isotope and every matrix based on typical or expected values of decay time, sample size, counter efficiency, etc. The LLD values are listed in the ODCM and represent the detection capability that the analytical methods must meet for each the specified sample media.

• Minimum Detectable Concentration (MDC) - The MDC is the a posteriori (after the fact) lower limit of detection based on actual decay time, measured sample size, and

. counting efficiency for an individual sample analysis. The MDC is compared to the LLD to verify that the measurement met the ODCM requirements for the maximum value of

. the LLD for the listed radionuclides. Values flagged by the CEAL as being confirmed above the MDC are presumed to detected levels of radioactivity.

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2018AREOR

• No Detectable (ND) - The term ND refers to Thermoluminescent Dosimeter (TLD) data analyzed per ANSI 13.37-2014 (Environmental Dosimetry-Criteria for System Design and Implementation) that is less than the ANSI calculated detection limit above a specific location's baseline. A baseline is calculated per ANSI methods for each specific location because the direct radiation signal is a strong function of very local conditions. If the TLD data for a specific location is less than that specific location's baseline plus the ANSI calculated detection limit then the value is ND for that specific measurement.

The sampling and analyses for the REMP are conducted in accordance with the ODCM and the applicable regulatory requirements. I Regulations and Guidance

• 10 CFR 50, Appendix I 10 CFR 50, Appendix I establishes limits on releases of radioactivity to the environment and the resulting dose to the public. The limits are:

Source NRC Limits for SONGS

. Liqui.d Effl~ent to:

L~ss *th~n:'or. equ*~1. 3,:)nrefn/yr fb'. Whol.e. bocly-fr6m *all ..

0

' 1:i'athways bf expo.sure' * :.:- : ' ' "' ' " .. ' - ' - ,._ " ' .,

L~ss tbari'or equa/tq-10 inr¢rr,/yr tp :anY :6rg~n fr~m* ai"I ' '

p~thw,ais {>(exposure ',: ';' .', '.", ' . ' '. ' . . ', :

Gaseous Effluents - Noble Less than or equal to 10 mrad/yr gamma air dose Gases Less than 20 mrad/yr, beta air dose Less than 5 mrem/yr, total body dose to an offsite exposed individual of the public

,1odi~.e~131/ tri.tium .aa:1d .' Less.thahpr equal tc;> 15 mrem to ~nfor~an fo~ a'ri offsite, particulates with halH~f~ ..

• indjvi~ual from. gllp~thways of. ~xpos1,1re _. '.  :' *, *

. greaJei' than 8 days. *

• 40 CFR 190 The Environmental Protection Agency (EPA) has established environmental radiation protection standards in 40 CFR 190 for the uranium fuel cycle that includes nuclear power plants. These limits are applicable to the sum of liquid effluent, gaseous effluents and direct radiation.

The dose limits from all applicable pathways to any offsite individual are o 25 mrem/year to the whole body o 75 mrem/year to the thyroid o 25 mrem to any other organ As discussed in the 2018 SONGS Annual Radioactive Effluent Release Report, the calculated dose to a member of the public as a result of SONGS is a small fraction of the dose standard established by the EPA This conclusion is supported by the results of the REMP, as reflected by the absence of measurable levels of radiation or radioactive materials in the offsite environment attributable to SONGS.

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2018AREOR The following regulatory and industry guidance has been identified as applicable to the SONGS REMP with application as may be required.

• US NRC Regulatory Guide 4.1, Programs for Monitoring Radioactivity in the Environs of Nuclear Power Plants, 1975

• US NRC Regulatory Guide 4.2, Preparation of Environmental Reports for Nuclear Power Stations, 1976

• NUREG-0133, Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants

• US NRC Regulatory Guide 1.109, Calculation of Annual Doses to Man from Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10 CFR Part 50, Appendix I, 1977

• NUREG-1301, Offsite Dose Calculations Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors, Generic Letter 89-01, Supplement No.

1, 1991

• ANSI N545, American National Standard Institute, "American National Standard Performance, Testing, And Procedural Specifications for Thermoluminescence Dosimetry (Environmental Application), 1975

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

• US NRC Regulatory Guide 4.15, Rev. 1, Quality Assurance for Radiological Monitoring Programs (Normal Operations) - Effluent Streams and the Environment, 1979

• NUREG-1576, Multi-agency Radiological Laboratory Analytical Protocols

• NUREG/CR-4007, Lower Limit of Detection: Definition and Elaboration of a Proposed Position for Radiological Effluent and Environmental Measurements, 1984 NRC Reporting Limits The NRC has established required reporting levels that represent thresholds above which an investigation is needed to evaluate and ensure compliance with radiation safety standards for the public. Ucensed nuclear facilities must prepare a special report if any environmental sample value exceeds the corresponding reporting limit. SONGS did not submit any special reports*to the NRC in 2018, as no reporting limits were exceeded.

Summary of Analy~is of Results and Trends The 2018 SONGS REMP was conducted in accordance with 10 CFR 50, Appendix I, 10 CFR §50.36a, and Section 5.0 of the SONGS Offsite Dose Calculation Manual (ODCM).

The REMP sample data have been summarized in the format specified in NUREG-1301. Data have been evaluated to identify the levels of any plant-related environmental radioactivity above background levels (i.e., plant-related contributions that are distinguishable from background).

For data distinguishable from background, a comparison has been made between current environmental monitoring results and preoperational or previous operational data as appropriate, for trending environmental radioactivity resulting from plant operation.

To conform with 10 CFR Part 50, Appendix I, Section IV 8.2, data on measurable levels of radiation and radioactive materials in the environment are provided to allow for a comparison to the predicted (calculated) values in the environment from radioactive material released in effluents.

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2018AREOR The tabulated means, ranges, and standard deviations are presented in Appendix B.

Comparisons with background and pre-operational baseline data are presented in Appendix D.

The REMP data are reviewed for accuracy and are compared against NRC reporting levels.

Measurements exceeding the administrative levels (10% of the NRC reporting levels) are flagged. Analyses are performed using instrumentation and methods that provide analytical results with a level of detection as required by the ODCM. The a posteriori Minimum Detectable Concentration (MDC) is compared to the maximum value for the a priori Lower Limit of Detection (LLD) specified in the ODCM. This ensures that regulatory limits for the maximum LLD are met.

Airborne Particulate Marine Water or Gases Animals Local Crops Sediment Analysis (pCi/L) (pCi/m 3 ) (pCi/kg, wet) (pCi/kg, wet) (pCi/kg, dry)

Table 1 - Maximum LLDs as Specified in SONGS ODCM The impact of SONGS on the surrounding environment is assessed through a series of analyses. These analyses include: comparisons of indicator to control locations (Appendix B);

comparison of operational to preoperational environmental data (Appendix D); summary of deviations from sampling requirements and corrective actions taken (Appendix E); and the results of the 2018 Land Use Census (Appendix F).

A detailed discussion of the 2018 analytical results is presented in this report*. Analytical values from offsite indicator sample stations continue to trend with the control stations. The only anthropogenic radionuclides detected in REMP samples were not related to SONGS. The medical radioisotope, iodine-131, discharged to the ocean through sewage plant outfalls, was detected in kelp. The Cs-137 detected in soil is attributable to legacy nuclear weapons testing fallout and other ~vents (Chernobyl) unrelated to SONGS.

The data indicate that SONGS had no significant radiological impact on the environment during 2018. In addition, dose to members of the public attributable to SONGS related radiological activities remain well below regulatory limit of 100 mrem per year, as specified in 10 CFR 20, § 20.1301 and in keeping with the philosophy of "as low as is reasonably achievable" (ALARA), as specified in 10 CFR 20.1101(b).

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2018AREOR The data are summarized in the Statistical Summary of REMP Data found in Appendix B.

Cesium-137 (Cs-137) is routinely identified in some soil samples and lodine-131 (1-131) is found in some kelp samples. However, the level of Cs-137 found in control and indicator samples.or soil is consistent with historical and expected Cs-137 concentrations from nuclear weapons

. testing. Since SONGS is no longer operating, it is not plausible for SONGS to generate or discharge 1-131 (half-life 8 days). The 1-131 in kelp is unrelated to any activities at SONGS.

Naturally occurring radionuclides, including beryllium-? (Be-7), potassium-40 (K-40), thorium-228 (Th-228) and thorium-230 (Th-230) were detected in both control and indicator locations at similar concentrations and are not related to SONGS. Refer to Appendix B for a more detailed discussion.

3 Land Use Census In accordance with 10CFR Part 50, Appendix I, Section IV.B.3, each year a Land Use Census is performed to identify any changes in the use of areas at and beyond the site boundary. ,

Modifications to the monitoring program are made if required by the results of this census to reflect new or changes in locations for pathways of exposure around the plant. Appendix F of the report identifies changes to the census in 2018; no changes in the sampling media or sample locations were required.

4 Quality Assurance To assure quality of sample analyses, a portion of REMP is devoted to quality assurance. All REMP activities, including support contractors, are assessed as defined in Regulatory Guide 4.15, Rev. 1. The quality assurance program's main aspects include process quality control, instrument quality control, comprehensive data reviews, cross-check analyses, and audits.

Routine REMP assessments ensure that the program, procedures and personnel are performing satisfactorily. Samples are collected using approved methods; radiochemical analyses of these samples are performed using standardized analytical methods. Quality audits and independent technical reviews help determine areas that need attention. These areas are addressed in accordance with the station's Corrective Action Program.

The California Department of Public Health (CDPH) participates in a split sampling program in accordance with the site's REMP procedures. Duplicate radiological split sampling is performed by SONGS to demonstrate repeatability of the sample collection, preparation, and analysis process. Split sample analysis is performed for the evaluation of the precision and bias trends of the method of analysis without the added variables introduced by sampling. The 2018 CDPH data is substantially similar to the 2018 SONGS REMP data with the exception of 1-131 in kelp.

The SONGS lab detected 1-131 in kelp; the CDPH lab did not detect 1-131 in kelp.

GEL Laboratories, LLC (GEL) performs the radiochemistry analysis of samples noted within this report. GEL performs the requested analysis under its Quality Assurance Program, which meets the requirements of Title 10 Code of Federal Regulations Appendix B Part 50, ASME NQA-1 and Regulatory Guide 4.15 Revision 1. The meas.urement capabilities of the radiological laboratory are demonstrated by participating in an inter-laboratory measurement assurance program and performing duplicate and split sample analyses. Approximately 10% of the analyses performed are quality control samples, consisting of inter-laboratory measurement assurance program samples, duplicate samples, and split samples. The inter-laboratory measurement assurance program provides samples that are similar in matrix and size to those sampled and measured by the REMP. This program assures that equipment calibrations and sample preparation methods accurately measure radioactive material in samples. See Appendix C for detailed QA measurement data.

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2018 AREOR Stanford Dosimetry performs the environmental TLD analyses noted in this report. Stanford Dosimetry performs the requested analyses under its quality assurance program which meets the requirement of Title 10 Code of Federal Regulations Part 50, Appendix B, ASME NQA-1 and Regulatory Guide 4.15 Revision 1.

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2018AREOR 5 Program Deviations Any deviation in the conduct of the program as required, either in terms of sample collection or analysis, requires an investigation as to the cause and identification of measures to prevent recurrence. Deviations from the sampling program or sensitivity requirements are acknowledged and explained in Appendix E to this report.

6 Conclusion Radiological environmental data collected throughout 2018 have been evaluated to determine any impact that San Onofre operations has on the surrounding environment. To accomplish this, several methods of evaluation were employed, namely:

1. Compilation and verification of all data, as well as a determination of those data considered to be greater than background levels.

2. *Correlation of effluent concentrations to concentrations in the environment. Refer to Appendix B.

3. Examination of time dependent variations of pertinent radioisotopes in selected environmental media throughout the year at both indicator and control locations.

4. Comparison of radioactivity in various media in 2018 against the levels observed in preoperational years.

5. Historical trending of radionuclides in various media during operational years.

This evaluation did not identify any radionuclides attributable to SONGS above background in any REMP sample. It is concluded that activities at SONGS in 2018 had no observable radiological environmental impact.

7 1 References

1. SONGS Offsite Dose Calculation Manual (ODCM), Section 5.0.

2. SONGS Radiological Monitoring (RM) Procedures

a. SDS-CH2-PGM-1006, Radiological Environmental Monitoring Program

b. SDS-CH2-PCD-1023, Review, Analysis and Reporting of Radiological Environmental Monitoring Program (REMP) Data

3. NUREG/CR-4007, "Lower Limit of Detection: Definition and Elaboration of a Proposed Position for Radiological Effluent and Environmental Measurements", August 1984.

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APPENDIX A 2018AREOR APPENDIX A. SAMPLE TYPE AND SAMPLING LOCATIONS Page 113

APPENDIX A 2018 AREOR Table 2 - Direct Radiation Measuring Locations DISTANCE* DIRECTION*

DIRECT RADIATION MEASURING LOCATION (miles) (Sector) 1 City of San Clemente (Former SDG&E Offices) (Control) 5.7 NW 2 Camp San Mateo - (MCB, Camp Pendleton) 3.6 N 3 Camp San Onofre - (MCB , Camp Pendleton) 2.8 NE 4 Camp Horno - (MCB, Camp Pendleton) 4.4 E 6 Old El Camino Real (AKA Old Highway 101 ) 3.0 ESE 8 Noncommissioned Officers' Beach Club 1.4 NW 10 Bluff 0.7 WNW 11 Former Visitors' Center 0.4b NW 12 South Edge of Switchyard 0.2b E 13 Southeast Site Boundary (Bluff) 0.4b ESE 15 Southeast Site Boundary (Office Building) 0.1 b SSE 16 East Southeast Site Boundary 0.4b ESE 19 San Clemente Highlands 4.9 NNW 22 Former US Coast Guard Station - San Mateo Point 2.7 WNW 23 SDG&E Service Center Yard (Control) 8.1 NW 31 Aurora Park - Mission Viejo (Control) 18.6 NNW 33 Camp Talega - (MCB, Camp Pendleton) (Control) 5.9 N 34 San Onofre School - (MCB , Camp Pendleton) 1.9 NW 35 Range 312 - (MCB , Camp Pendleton) 4.8 NNE 36 Range 208C - (MCB, Camp Pendleton) 4.1 NE 38 San Onofre State Beach Park 3.4 SE 40 SCE Training Center - Mesa 0.7 NNW 41 Old Route 101 - East 0.3b E 44 Fallbrook Fire Station (Control) 17.7 E 46 San Onofre State Beach Park 1.0 SE 47 Camp Las Flores - (MCB , Camp Pendleton) (Control) 8.6 SE 49 Camp Chappo - MCB (Control) 12.9 ESE 50 Oceanside Fire Station (Control) 15.6 SE 53 San Diego County Operations Center (Control) 44 .2 SE 54 Escondido Fire Station (Control) 31 .8 ESE 55 San Onofre State Beach (U1 West) 0.2b WNW 56 San Onofre State Beach (U 1 West) 0.2b w Page 114

APPENDIX A 2018 AREOR DISTANCE* DIRECTION*

DIRECT RADIATION MEASURING LOCATION (miles) (Sector) 57 San Onofre State Beach (Unit 2) 0.1 b SW 58 San Onofre State Beach (Unit 3) 0.1b s 59 SONGS Meteorological Tower 0.3b WNW 61 Mesa - East Boundary 0.7 N 62 MCB - Camp Pendleton 0.7 NNE 63 MCB - Camp Pendleton 0.6 NE 64 MCB - Camp Pendleton 0.6 ENE 65 MCB - Camp Pendleton 0.7 E 66 San Onofre State Beach 0.6 ESE 67 Former SONGS Evaporation Pond 0.6 NW 68 Range 210C - (MCB , Camp Pendleton) 4.4 ENE 73 South Yard Facility 0.4b ESE 74 Oceanside City Hall (Backup Control) 15.6 SE 75 Gate 25 MCB 4 .6 SE 76 Former El Camino Real Mobil Station 4.6 NW 77 Area 62 Heavy Lift Pad 4 .2 N 78 Horno Canyon (AKA Sheep Valley) 4.4 ESE Table 3 - Airborne Radioactivity Sampling Locations AIRBORNE (AP and AC) SAMPLING LOCATION DISTANCE* DIRECTION*

(miles) (Sector) 1 City of San Clemente (City Hall) 5.1 NW 7 AWS Roof 0.18b NW 9 State Beach Park 0.6 ESE 10 Bluff 0.7 WNW 11 Mesa EOF 0.7 NNW 12 Former SONGS Evaporation Pond 0.6 NW 13 Marine Corp Base (Camp Pendleton East) 0.7 E 16 San Luis Rey Substation (Control) 16.7 SE Page I 15

APPENDIX A 2018 AREOR Table 4 - Soil Sampling Locations SOIL (TSC SO) SAMPLING LOCATIONc DISTANCE* DIRECTION*

(miles) (Sector) 1 Camp San Onofre 2.8 NE 2 Old Route 101 - (East Southeast) 3.0 ESE 3 Basilone Road / 1-5 Freeway Off ramp 2.0 NW 5 Former Visitors Center 0.4b NW 7 Prince of Peace Abbey - Oceanside (Control) 15 SE Table 5 - Ocean Water Radioactivity Sampling Locations OCEAN WATER (SW) SAMPLING LOCATION DISTANCE* DIRECTION*

(miles) (Sector)

A Station Discharge Outfall - Unit 1 0.6 SW B Outfall - Unit 2 1.5 SW C Outfall - Un it 3 1.2 SSW D Newport Beach (Control) 30.0 NW 51 Unit 2 Condu it (not listed in the ODCM) 0.1 SW 52 Un it 3 Conduit (not listed in the ODCM) 0.1 SSW Table 6 - Drinking Water Radioactivity Sampling Locations DRINKING WATER (WGC OW) SAMPLING LOCATION DISTANCE* DIRECTION*

(miles) (Sector) 4 Camp Pendleton Drinking Water Reservoir 2.0 NW 5 Oceanside City Hall (Control) 15.6 SE Table 7 - Shorel ine Sediment Radioactivity Sampling Locations SHORELINE SEDIMENT (SSA SO) SAMPLING LOCATION DISTANCE* DIRECTION*

(miles) (Sector) 1 San Onofre State Beach (Southeast) 0.6 SE 2 San Onofre Surfing Beach 0.8 WNW 3 San Onofre State Beach (Southeast) 3.5 SE 4 Newport Beach North End (Control) 29.2 NW Table 8 - Local Crops Sampling Locations LOCAL CROPS SAMPLING (TFB VG) LOCATION DISTANCE* DIRECTION' (miles) (Sector) 2 Oceanside (Control) 15 to 25 SE to ESE 6 SONGS Garden Mesa EOF 0.7 NNW Page 116

APPENDIX A 2018 AREOR Table 9 - Non-Migratory Marine Animal Sampling Locations MARINE ANIMAL (MOA) SAMPLING LOCATION DISTANCE* DIRECTION*

(miles) (Sector)

A Unit 1 Outfall 0.9 WSW B Units 2/3 Outfall 1.5 SSW C Laguna Beach (Control) 20 to 25 WNW to NW Table 10 - Kelp Sampling Locations KELP (VG) SAMPLING LOCATIONd DISTANCE* DIRECTION*

(miles) (Sector)

A San Onofre Kelp Bed 1.5 s B San Mateo Kelp Bed 3.8 WNW C Barn Kelp Bed 6.3 SSE to SE E Salt Creek (Control) 11 to 13 WNW to NW Table 11 - Backup Kelp Sampling Locations Backup KELP (VG) SAMPLING LOCATIONd,

• DISTANCE* DIRECTION*

(miles) (Sector)

G Capistrano Beach Reef (not listed in the ODCM) 8.9 to 9.1 NW H San Clemente Pier (not listed in the ODCM) 5.7to5.8 NW I Wheeler North Artificial Reef (not listed in the ODCM ) 5.3 WNW Page 117

APPENDIX A 2018 AREOR Table 12 - Ocean Bottom Sediment Sampling Locations OCEAN BOTTOM (SEB SO) SAMPLING LOCATION DISTANCE* DIRECTION*

(miles) (Sector)

B Unit 1 Outfall 0.8 SSW C Unit 2 Outfall 1.6 SW D Unit 3 Outfall 1.2 SSW E Laguna Beach (Control) 20-25 NW F SONGS Up-coast 0.9 WSW 51 Unit 2 Conduit (not listed in the ODCM) 0.1 SW 52 Unit 3 Conduit (not listed in the ODCM) 0.1 SSW NOTES :

a Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint as described in the ODCM Rev . 13. Direction determined from degrees true north.

b Distances are within the Units 2/3 SAB/EAB (Site Area Boundary/Exclusion Area Boundary) c Soil samples are not required by Technical Specifications.

d Kelp samples are not required by Technical Specifications.

e Backup kelp sampling locations are only used if needed. In 2018 , no samples were obtained from backup kelp sampling locations.

MCB Marine Corps Base (Camp Pendleton)

Table 13 - Sector and Direction Designations DEGREES TRUE NORTH NOMENCLATURE FROM SONGS 2 AND 3 MIDPOINT Sector Center Sector 22.5° Direction Limit Line Limit Sector 348.75 0 & 360 11 .25 A N 11 .25 22 .5 33.75 B NNE 33 .75 45.0 56.25 C NE 56 .25 67 .5 78.75 D ENE 78.75 90.0 101 .25 E E 101.25 112.0 123.75 F ESE 123.75 135.0 146.25 G SE 146.25 157.0 168.75 H SSE 168.75 180.0 191 .25 J s 191 .25 202 .5 213.75 K SSW 213 .75 225 .0 236.25 L SW 236.25 247 .5 258 .75 M WSW 258.75 270 .0 281 .25 N w 281 .25 292 .5 303.75 p WNW 303 .75 315.0 326 .25 Q NW 326 .25 337.5 348.75 R NNW Page 118

APPENDIX A 2018 AREOR PACIFIC OCEAN San Onofre RE P Sector E One~ ale Radius E SectorJ s

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Figure 4 - SONGS REMP One Mile Radius Page 119

APPENDIX A Sector D EHE San Onofre REMP' Iwo-M*1e Radius l.lrll$2l'.l~

Sector N w Sector E II.- E D.15 a IUS Figure 5 - SONGS REMP Two Mile

. Radius Page 120

APPENDIX A 2018 AREOR Sector A

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2018 AREOR San Onofre REMP 30-Mile North 0 IJnii. 213 thdPoint

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°""' :lr.4tl014 Figure 7 - SONGS REMP 30-mile Radius North Page 122

APPENDIX A 2018 AREOR i ' San Onofre REMF' 45 M le South l i

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APPENi:YIX C . 2018AREOR APPENDIX B. RESULTS AND DISCUSSIONS OF 2018 ENVIRONMENTAL DATA Page I 24

APPENDIX B 2018 AREOR Summary A summary of the type and number of REMP samples obtained in 2018 appears in Table 14.

The analysis results, as presented below, support the conclusion that all measured levels of radioactivity are attributable to sources external to SONGS (fallout from the nuclear accident at the Fukushima Daiichi Nuclear Power Station, or Chernobyl, residual fallout from legacy atmospheric nuclear weapons testing, and discharge of medically administered 1-131 from the San Juan Sewage Plant outfall). Cs-137 has been intermittently detected in the indicator and in the control soil samples in past years and no correlation between Cs-137 level in soil and proximity to the plant has been observed.

Table 14 - REMP Sample Analysis Summary for 2018

', *:t,~~4'( ,)'?};!;~",ti, ,.:JoJa!.# ot,,,

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Direct Radiation Dosimetry Quarterly 49 195c Gross Beta 8 416 Weekly Airborne Particulates 1-131 8 416 Gamma Quarterly 8 32 Gamma 4 52 Monthly Ocean Water H-3 4 52 H-3 Quarterly 4 16 Gamma, 2 24 Drinking Water, H-3 Monthly 2 24 Unfiltered Gross Beta 2 24 Shoreline Sediment Gamma Semi-Annually 4 8 Ocean Bottom Sediment Gamma Semi-Annually 7 14 Marine Species, Flesh Gamma Semi-Annually 3 24 Local Crops Gamma Semi-Annually 2 gb Kelp Gamma Semi-Annually 4 6d Soil Gamma Annually 5 5 NOTES:

a. The total number of analyses includes environmental samples not required by the ODCM, such as ocean water and ocean bottom samples from locations not listed in the ODCM.

b. An extra sample of sorrel was taken in the spring of 2018 at the SONGS garden.

c. Environmental dosimeters used for ISFSI monitoring not included in this total. REMP TLD #22 was not available for the second quarter 2018. See Appendix E.~

d. Kelp canopy was absent from two locations in October 2018. See Appendix E.

r, I

Page I 25

. APPENDIX B 2018AREOR Results and Discussions of 2018 Environmental Data Direct Radiation Direct gamma radiation is monitored in the environment by calcium sulfate (CaS04)

Thermoluminescent Dosimeters (TLDs) placed at 49 locations and analyzed quarterly per the methodology described in ANSI/HPS N13.37-2014, "Environmental Dosimetry- Criteria for System Design and Implementation." All 2018 TLD data from locations outside the SONGS Exclusion Area Boundary (EAB) were below the minimum detectable dose. The data indicate detectable direct radiation measurements only in the immediate vicinity of SONGS, via those dosimeters placed either within or immediately adjacent to the SONGS EAB. The Annual Public Dose, as referenced in Table 15, is based on the potential member of the public exposure at the listed location. For offsite locations, the occupancy factor is one, for potential full-time occupancy.

For onsite locations, at or near the EAB/CAB, the occupancy factor is determined per SDS-RP3-PCD-1014, Direct Radiation Exposure Controls and Monitoring. The hypothetical maximum associated exposure to a member of the general public, adjusted for occupancy, is less than 1 mrem per year as calculated using the ANSI method. Refer to Table .15 for a summary of all 2018 SONGS REMP TLD data. Refer to Appendix I (ISFSI TLD DATA) for a discussion of the 2018 ISFSI direct radiation data.

Separate TLDs are used to compensate for transit dose and a fade TLD is used to evaluate for the time and temperature dependent "fade" that may affect dosimeter data. After the samples were analyzed, the measured doses were corrected for pre and post field exposure times.

Neutron dosimeters were placed at REMP TLD station 55 and at selected locations around the Independent Spent Fuel Storage Installation (ISFSI). In 2018 no neutron radiation was detected at station 55. Some neutron radiation (a maximum of 2.5 mrem) was detected at some of the SONGS ISFSI locations.

Direct Radiation baseline evaluation and estimation of natural background An in-depth analysis of the environmental radiation results for the period of 2001 through 2010 was completed for all the REMP TLD monitoring loc9tions. It can be inferred that if the standard deviation was low and no. additional exposure above background was identified at a particular station, the average of that station's radiation exposure results should be equal to natural background (baseline) at that location. The baseline results for REMP TLDs have been summarized with the annual and quarterly values in the Table 15.

Natural background radiation is variable and a minor shift in location can yield a measurable change in background radiation. Therefore, if a TLD is moved the baseline (background) for that location may be affected. The natural direct gamma radiation varies according to location because of differences in the natural radioactive materials in the soil, soil moisture content, buildings, and other factors.

The baseline environmental exposure analysis of 2001 through 2010 environmental TLD results included an assessment of the standard deviation of the quarterly results and annual totals at each location. This is an appropriate methodology to determine the ability to detect radiation exposure .

above background, described in ANSI/HPS N13.37-2014. The quarterly and annual.results expressed in Table 15 are positive exposure if they exceed either 5 mrem above the baseline quarterly or 10 mrem above the baseline annually. If not, the measurement is noted as "ND" for "Not Detectable."

Page 126

APPENDIX B 2018AREOR An empirical determination of the background baseline for stations within the Exclusion Area Boundary (EAB) is not possible due to the known plant related radiological activities (e.g., storage and transport of radioactive material.s) that occurred during the baseline calculation study period.

The average of nearby proxy locations outside the EAB was used to estimate the baseline within the EAB. A value of 15.8 mrem per quarter was conservatively selected as the baseline for the REMP stations located within the EAB.

In 1980 the Department of Energy (DOE) conducted an Aerial Radiological Survey of SONGS and the surrounding area. The baseline/background value of 15.8 mrem per standard quarter within the SONGS EAB is consistent with the 1980 gamma exposure rates reported by the DOE for the areas immediately north and south of SONGS, taking into account the reduction in environmental radioactivity and background dose rates caused by the decay of atmospheric nuclear weapons testing fallout since 1980.

Page 127

APPENDIX B 2018 AREOR Table 15 - SONGS REMP TLD Data TLD Baseline Adjusted Quarterly Annual Annual Qtr. 2018 Quarterly Results Ann. Annual Distance (mrem) Results Fac:lllty Public:9 Location (miles) Baseline (mrem) Baseline Total Dose Dose (SCE.fl) (mrem) (mrem) (mrem) (mrem) (mrem) 1 2 3 4 1 2 3 4 1 City of San Clemente 5.7 18.4 19.2 16.4 17.6 17.6 ND ND ND ND 73.6 70.8 ND ND 2 Camp San Mateo - MCB 3.6 19.6 19.2 18.9 19.5 19.6 ND ND ND ND 78 .2 77.1 ND ND 3 Camp San Onofre - MCB 2.8 17.2 16.7 16.9 16.7 17.0 ND ND ND ND 69.0 67.3 ND ND 4 Camp Homo - MCB 4.4 19.0 19.2 17.8 18.5 18.0 ND ND ND ND 76.1 73.4 ND ND 6 Old Route 101 (ESE) 3.0 12.0 11 .1 10.5 10.6 11.4 ND ND ND ND 47.9 43 .6 ND ND Noncommissioned Officers' 8 1.4 16.2 15.6 15.6 15.6 15.2 ND ND ND ND 64.8 62.1 ND ND Beach Club 10 Bluff 0.7 17.2 17.3 16.2 16.4 16.4 ND ND ND ND 69.0 66 .3 ND ND 19 San Clemente Highlands 4.9 18.7 18.9 18.1 19.0 18.0 ND ND ND ND 74.8 74.0 ND ND 22b Former US Coast Guard ...

2.7 18.8 19.4 19.6 18.8 ND N/A ND ND 75.3 57 .8 N/A N/A Station SDG&E Service Center Yard 23 (Control) 8.1 16.6 16.9 15.1 17.1 15.9 ND ND ND ND 66.4 65.1 ND ND Aurora Park - Mission Viejo 31 (Control) 18.6 19.4 20.6 19.2 19.9 20.0 ND ND ND ND 77.8 79.8 ND ND Camp Talega - MCB 33 (Control) 5.9 19.9 19.8 18.9 20.2 17.8 ND ND ND ND 79.5 76.7 ND ND 34 San Onofre School - MCB 1.9 17.0 17.9 15.8 15.8 16.6 ND ND ND ND 68 .1 66.1 ND ND 35 Range 312 - MCB 4.8 17.8 16.0 15.8 15.3 16.5 ND ND ND ND 71.1 63.5 ND ND 36 Range 208C - MCB 4.1 20.5 19.8 19.8 19.7 19.4 ND ND ND ND 82 .0 78.7 ND ND 38 San Onofre State Beach Park 3.4 15.0 14.9 13.3 14.0 13.4 ND ND ND ND 60 .1 55.7 ND ND 40 SCE Training Center - Mesa 0 .7 18.0 17.6 17.3 16.6 17.0 ND ND ND ND 71 .9 68.5 ND ND Fallbrook Fire Station 44 (Control) 17.7 14.7 15.4 13.8 15.5 14.2 ND ND ND ND 58.9 58.9 ND ND 46 San Onofre State Beach Park 1.0 12.8 14.5 12.9 13.0 13.2 ND ND ND ND 51 .3 53.7 ND ND Camp Las Flores - MCB 47 (Control) 8.6 14.0 15.7 16.0 15.8 15.8 ND ND ND ND 55.9 63.3 ND ND Camp Chappo - MCB 49 (Control) 12.9 14.9 16.3 15.1 15.6 15.7 ND ND ND ND 59.7 62.7 ND ND Oceanside Fire Station 50 (Control) 15.6 17.4 17.6 16.7 17.1 17.1 ND ND ND ND 69.8 68.4 ND ND San Diego County 53 Ooerations Center (Control) 44.2 19.1 20.2 18.7 21 .0 19.6 ND ND ND ND 76.5 79.5 ND ND Escondido Fire Station 54 (Control) 31 .8 16.9 18.5 16.9 18.0 17.5 ND ND ND ND 67 .7 70.8 ND ND 61 Mesa - East Boundary 0.7 16.2 15.7 15.2 15.1 15.7 ND ND ND ND 64.8 61 .7 ND ND 62 Camp Pendleton 0.7 13.9 13.2 12.6 12.5 13.2 ND ND ND ND 55.5 51 .5 ND ND 63 Camp Pendleton 0.6 14.6 14.7 13.7 14.7 13.9 ND ND ND ND 58.4 56.9 ND ND 64 Camp Pendleton 0.6 15.8 15.9 14.8 15.9 15.2 ND ND ND ND 63.1 61 .8 ND ND Page 128

APPENDIX B 2018 AREOR TLD Baseline Adjusted Quarterly Annual Annual Distance Qtr. 2018 Quarterly Results Results Ann. Annual Facllty p~

Location Baseline (mrem) Baseline Total (miles) (mrem) Dose Dose (SCE""') (mrem) (mrem) (mrem) 1 2 3 4 1 2 3 4 (mrem) (mrem) 65 Camp Pendleton 0.7 14.1 13.7 13.0 13.5 13.2 ND ND ND ND 56.3 53.3 ND ND 66 San Onofre State Beach 0.6 14.7 14.6 14.1 14.0 14.0 ND ND ND ND 58.9 56.8 ND ND Former SONGS Evaporation 67 0.6 17.8 18.3 17.2 18.1 17.7 ND ND ND ND 71 .1 71 .3 ND ND Pond 68 Range 210C - MCB 4.4 15.8 16.8 16.3 16.2 16.5 ND ND ND ND 63.1 65 .8 ND ND Oceanside City Hall (Backup 74 Control) 15.6 14.0 15.0 13.7 14.8 13.4 ND ND ND ND 55.9 56.8 ND ND 75 Gate 25 MCB 4.6 16.7 17.6 15.9 16.9 17.1 ND ND ND ND 66.9 67.4 ~D ND 76 El Camino Real Mobil Station 4.6 18.2 19.2 17.9 18.9 18.6 ND ND ND ND 72 .7 74.6 ND ND 77 Area 62 Heavy Lift Pad 4.2 20.2 19.8 19.5 19.9 19.1 ND ND ND ND 80.7 78.3 ND ND 78 Homo Canyon 4.4 11 .7 12.7 11.7 11 .7 12.1 ND ND ND ND 46.7 48.2 ND ND 11 Former Visitors' Center

• 0.4* 15.8 17.0 16.3 16.1 15.6 ND ND ND ND 63.1 65.0 ND ND 12 South Edge of Switchyard

• 0.2* 15.8 17.0 16.8 16.8 17.7 ND ND ND ND 63 .1 68.3 ND ND Southeast Site Bounda ry 13 (Bluff)

• 0.4* 15.8 20.2 19.6 22 .5 22 .0 ND ND 6.8 6.2 63 .1 84.4 21 .3 ND 15c Southeast Site Boundary (Office Bldg)

• 0.1* 15.8 22.1 19.3 17. 0 17.2 6.3 ND ND ND 63 .1 75.5 12.4 ND East Southeast Site 16 Boundary

• 0.4* 15.8 15.4 14.9 14.1 16.8 ND ND ND ND 63.1 61.2 ND ND 41 Old Route 101 - East

• 0.3* 15.8 16.2 16.1 15.8 15.6 ND ND ND ND 63 .1 63.7 ND ND San Onofre State Beach (U1 55 West) *,d 0.2* 15.8 20.4 19.4 18.5 18.8 ND ND ND ND 63.1 77.0 13.9 ND San Onofre State Beach (U1 56 West)

• 0.2* 15.8 19.6 15.6 16.9 18.1 ND ND ND ND 63.1 70.2 ND ND San Onofre State Beach (Unit 57

2)

• 0.1* 15.8 17.4 16.5 17.2 17.3 ND ND ND ND 63.1 68 .5 ND ND San Onofre State Beach (Unit 58 3)

• 0.1* 15.8 18.9 16.3 18.2 17.5 ND ND ND ND 63.1 70 .9 ND ND SONGS Meteorological 59 Tower

• 0.3* 15.8 19.4 19.3 20.1 19.4 ND ND ND ND 63.1 78.1 15.0 ND 73 South Yard Facility

• 0.4* 15.8 19.4 17.3 18.0 18.8 ND ND ND ND 63.1 73.4 10.3 ND Indicates that the station is within the EAB (Exclusion Area Boundary) . The baseline has been estimated to be 15.8 mrem per standard 91-day quarter within the EAB.

a Indicates on site location . The dose to members of the public is based on a default non -office area annual occupancy time of 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year.

b SCE-22 TLD was lost during second quarter. Since empirical TLD data is only available for three quarters, the annual dose for TLD 22 is not available .

C TLD-15 was moved during the second quarter to avoid construction damage. The result of 18.35 mR (19 .3 mrem) is based on the actua l portion of the quarter that TLD 15 was at the location 15 and the known exposure rates at the alternate locations.

d. A neutron TLD was collocated at location 55 during each quarter. These neutron TLDs had no detectable neutron signal in any quarter of 2018.

e. Adjusted for occupancy in accordance with SDS-RP3-PCD-1014 Page 129

APPENDIX B 2018 AREOR Quality Control Duplicate Direct Radiation Samples Duplicate Quality Control (QC) TLD was installed adjacent to TLD #66 and TLD # 67. The duplicate TLDs agreed closely with the indicator TLDs, see Appendix C for results. These TLDs were not required by the ODCM and are not included in the Statistical Summary of REMP Data.

ISFSI Direct Radiation Samples Independent Spent Fuel Storage Installation (ISFSI) TLDs were placed in the vicinity of the ISFSI. Data from these TLDs have not been included in the statistical summary of REMP data because they are not included in the ODCM. The ISFSI data are listed and discussed in

• Appendix I.

Airborne Particulate, Iodine, and Composite Isotopic Analyses Air particulate samples were collected on a weekly basis from seven indicator locations and from one control location. The samples were analyzed for gross beta activity, 1-131, and composited quarterly for gamma isotopic analysis. Sample locations were selected according to the requirements of the ODCM.

Gross beta analysis is a measure of total radioactivity of beta-emitting radionuclides in a sample. Beta radiation is emitted by many radionuclides. Gross beta measurements are used to identify samples with elevated levels of radioactivity for further analysis. The gross beta analysis does not identify specific radionuclides.

All weekly gross beta activity analysis results were above the MDC. The concentration of gross beta activity in the samples collected from the indicator locations ranged from 0.006 pCi/m 3 to 0.096 pCi/m 3 , averaging 0.032 pCi/m 3 of air. The concentrations of gross beta activity in the samples from the controi location ranged from 0.014 to 0.091 pCi/m 3 , averaging 0.036 pCi/m 3 of air. There is seasonal variability to 'the gross beta results for air samplers, and the magnitude of the results in 2018 are not significantly different from what has been seen in previous years. In 2018, there was a noticeable increase in the average gross beta data for all locations, both control and indicators. This trend will be monitored in 2019. The fact that the trend is evident in both control and indic~tor locations shows that this is attributable to a factor external to SONGS.

Per the requirements of the ODCM, Section 5, Table 5-1, an assessment was performed to determine whether the gross beta activity of the indicators exceeded 10 times the background (control location #16). The results showed that indicator locations maximum gross beta activity in air in 2018 was 0.096 pCi/m 3 which is less than 10 times the average background measured at the control location (0.036 pCi/m 3). No further action is required by the ODCM.

Indicator samples analyzed for 1-131 were all identified below the MDC. No action was required by the ODCM. .

The average quarterly air particulate sample beta activity from the indicator stations and control station have been compared through 2018. The average of the indicator data trends closely

-with the average of the control data. The gross beta data results indicate that the trends identified are attributable to a macro-environmental cause not related to SONGS. The beta activity measured in the air particulate samples is from naturally occurring radioactive material.

Gamma analyses are performed on quarterly composites of the air particulate samples to determine if any activity is from SONGS. The gamma analyses have revealed no anthropogenic radioactivity related to SONGS.

• Page 130

APPENDIX B 2018AREOR Ocean Water Monthly ocean water samples were collected from three indicator locations near each station discharge and from the control location at Newport Beach. The samples were analyzed for naturally-occurring and SONGS-related gamma-emitting radionuclides, including tritium.

Quarterly composite ocean water samples were analyzed for tritium according to ODCM requirements.

Throughout 2018, only naturally occurring radionuclides were detected in the monthly gamma spectral analyses of ocean water. Monthly ocean water samples were also analyzed for tritium, consistent with the State of California Department of Public Health (CDPH) split sample program. During 2018 all the SONGS REMP and the duplicate CPDH tritium in ocean water sample results less than detectable.

The data indicate that SONGS had no measurable impact on the environment as measured by ocean water.

Drinking Water In 2018, monthly drinking water samples were collected from one indicator location and from the Oceanside control location. Samples were analyzed for tritium, gross beta, and naturally occurring and SONGS related gamma emitting radionuclides. There is no drinking water pathway for liquid effluent at SONGS.

No station related radionuclides were detected in drinking water during 2018. Gross beta activity was identified in some samples, but gamma spectroscopy identified only natural radionuclides. SONGS had no impact on the environment as measured by drinking water.

Shoreline Sediment (Beach Sand)

Beach sand was collebted semiannually in 2018 from three indicator locations and from a control location situated in Newport Beach. After collection, the samples were analyzed for plant related and naturally occurring radionuclides. Only naturally occurring radionuclides were detected in all samples. No plant related radionuclides were reported above the MDC. SONGS had no impact on the environment as measured in beach sand.

I Ocean Bottom Sediments Ocean bottom sediments were collected from three indicator locations and the Laguna Beach control location. The samples were analyzed by gamma spectral analysis for naturally occurring and station related radionuclides. Only naturally occurring radionuclides were detected in ocean bottom sediment samples collected during 2018.

Four non-ODCM ocean bottom sediment samples were obtained from two locations, Unit 2 outfall conduit and Unit 3 outfall conduit. The conduit samples were collected to measure the radiological environmental effect potentially resulting from the minor conduit leakage. During 2018, all conduit sample analysis results were below the MDC for station related radionuclides.

SONGS had no impact on the environment as measured by ocean bottom sediments.

Page 131

APPENDIX B 2018 AREOR Marine Species (Flesh)

Species of adult fish, crustacean and mollusks were collected on a semi-annual basis at the SONGS Unit 1 outfall, the SONGS Units 2/3 outfall and from Laguna Beach control location.

The edible portion of each sample type was analyzed for gamma-emitting station-related and naturally occurring radionuclides. The r~sults were subsequently reported to SONGS in terms of wet sample weights. Because results based on a wet sample weight are most useful for calculating doses, the results of sample analyses are summarized in terms of "as received" wet weights. No plant related radionuclides were detected. Naturally-occurring radionuclides were detected in marine species samples collected during 2018. SONGS had no impact on the environment as measured by this sample medium.

Local Crops Fleshy and leafy crops were collected semiannually in 2018 from the SONGS garden and from the control location 21 miles SE from SONGS Units 2/3 midpoint. Tomato, cabbage, lettuce, sorrel and squash were sampled in 2018, and only naturally occurring radionuclides were identified. No plant related radioactivity was detected. It is concluded that in 2018 SONGS had no measurable impact on local crops ..

Soil To determine if there is evidence of a build-up of radionuclides in the land near SONGS, indicator soil samples were collected from Camp San Onofre, Old Route 101, Basilone Road and the East Site Boundary (Former Visitor's center). A control sample was obtained from Prince of Peace Abbey in Oceanside. Surface soil was collected from *all indicator and control locations at the depth of 3 inches. The sampling protocol is consistent with the procedure described in HASL-300. Soil sampling is not required by the ODCM.

Soil samples were analyzed for naturally-occurring and SONGS-related gamma-emitting radionuclides using gamma spectral analysis. The 2018 soil samples showed measurable levels of naturally occurring radionuclides. Cs-137 was detected in two indicator samples (0.096 and 0.106 pCi/g) and the control sample (0.0996 pCi/g). Cs-137 in soil samples at these levels is attributable to factors external to SONGS (residual nuclear weapons testing fallout, the

. Chernobyl accident).

Cs-137 and strontium-90 (Sr-90) were detected in soil profile analyses conducted in previous years. These radionuclides are attributable to the nuclear weapons testing fallout depositing on soil and retention of these radionuclides due to their long half-lives. The presence of Cs-137 in the indicator and in the control locations at similar levels supports the conclusion that the source of this radionuclide to a factor external to SONGS (fallout deposition). During 2018, SONGS did not have a detectable effect on the environment as measured by soil samples.

Page 132

APPENDIX B 2018 AREOR Kelp Kelp was collected in April and October of 2018 from the San Onofre kelp bed , San Mateo kelp bed, Barn kelp bed, and from the Salt Creek control location. The samples were analyzed by gamma-spectral analysis for naturally-occurring and station-related radionuclides . Naturally occurring radionuclides (such as K-40 , Th-234 and others) were detected in all six kelp samples collected in 2018. lodine-131 (half-life 8 days) was identified in three of the four samples collected in April 2018 (at two indicator locations and at the control location). lodine-131 was not detected in the two kelp samples collected in October 2018. SONGS is permanently shut down and the nuclear fuel is not in the reactor vessel. Therefore , lodine-131 is not being generated at SONGS. The iodine-131 detected in kelp is attributable to sewage plant discharges of medically administered iodine-131 .

1-131 has been detected at indicator and control locations in previous years . 1-131 data in ocean water samples near SONGS have been consistently indistinguishable radiolog ically from background . The northern control locations are too far away and in the predominantly upstream current direction for the 1-131 activity to be attributable to SONGS. The Salt Creek control kelp sample station near the San Juan Sewage Plant outfall has consistently yielded the highest 1-131 activity measured in kelp and has consistently yielded 1-131 above radiological background.

Figure 9 shows a relatively close correlation between indicator and control locations over an extended period , further supporting the assessment that the likely source for this radionuclide is external to SONGS. (Note: Figure 9 includes all 1-131 results, including those that are below the MDC.)

Figure 9 131 in Aquatic Kelp 1-131 in Kelp l.40E-01 1.20E-01 l.OOE-01

~

u

~ 8.00E-02

2 t,

! 6.00E-02 rn 1

4.00E-02 2.00E-02 O.OOE+OO 2013 2014 201S 2016 2017 2018

- AVC 01-San Onofre - AVC 02 -San Mateo -AVC 03-Barn AVC 05 (Control)

Page 133

APPENDIX B 2018 AREOR SONGS 2014 Kelp Samples 0

~*

U..to213~

-*- o,,r- o.,,,.,

Sor, """"

~

Hi'"-- lll1lNtlott fl,ftM th-Sm.a

'50NG&AAE MXOiJt.EQilt...~~

0... ~14 Paahc 0<:&an Figure 10 - Kelp Sampling Locations Refer to Figure 11 for the relative location of the kelp beds , the San Juan Sewage Plant outfall ,

and the SONGS outfalls. The data strongly support the conclusion that the 1-131 detected in kelp is attributable to medically administered 1-131 discharged through the San Juan Sewage Plant outfall and not to SONGS.

Correlation of Effluent Concentration to Concentrations in the Environment In accordance with 10 CFR 50 Appendix I, Section IV, 8 .2, data on measurable levels of radiation and rad ioactive materials in the environment have been evaluated to determine the relationship between quantities of radioactive material released in effluents and resultant radiation doses to individuals from principal pathways of exposure.

REMP samples , both terrestrial and marine, indicated no accumulation of plant-related radioactivity in the environs. Samples with detectable activity were not statistically different from control samples . Plant related rad ionuclides detected during 2018 were attributed to sources external to SONGS (past nuclear weapons fallout, Chernobyl , Fukushima , and medical iodine releases in sewage) . The regulatory requirement to evaluate the relationship between quantities of radioactive materials released in effluents and the resultant radiation doses to individuals may be summarized by the following conclusion :

Effluent program releases are evaluated annually to determine the receptor(s) with the highest hypothetical dose. The 2018 REMP sample data indicated no accumulation of plant-related radioactive materials in the offsite environment, thereby lending confirmation to the adequacy of the in-plant effluent controls program and dose assessments.

Page 134

APPENDIX B 2018 AREOR Statistical Summary of REMP Data for 2018 For the tables below, the numbers in parentheses next to the mean value indicate number of samples with positive results compared to the total number of samples. The smaller font numbers iri parentheses indicate the range of results.

Table 16 - 2018 Quarterly Gamma Dose

'.*Pathway Non-routine (Me~sµrement Repqrt~d .

<, ~J}~~~itJ Meast~~i~ts

• TLD Southeast Site 16.7 (155/155) 21.1 (4/4) 17.1 (40/40)

Dose per 91 days Gamma 195 5 Boundary (Bluff) 0 (10.5 - 22.5) (19.6- 22.5) (13.4 - 21.0)

(mrem/qtr) 0.4 Mi. SE NOTES:

• Indicator location TLDs include all REMP TLDs 5:o miles or closer to SONGS 2/3 midpoint and TLD#1 (City of San Clemente)*

• Control location TLDs include all REMP TLDs more than 5.0 miles from SONGS 2/3 midpoint, excluding TLD #1 (City of San Clemente)

• TLD data excludes QC TLDs, transit dose TLDs, and ISFSI TLDs

• Table 16 is based on NUREG 1301 methodology and not ANSI 13-37 methodology.

Table 17 - Weekly Airborne Particulates Gross Beta i-t

"\,pe and NuiJk *L<:>catj<>,.!1.;'t"ith Highest1

, ,:J~~thway

,(M~ij~µ,rement o(Analysi:

' " - ~. \"" ' -, - . Non,~P,~!1ne Rep

• Naimf'.Distar:ice,and ::

' *r~::l.!nit)

• Performea,~;',y,.* * * 'bi~~;tion ' Meas1i ents*

'\o ~*. "

Air Filter 0.032 (364/364) San Luis Rey 0.036 (52/52) 0.036 (52/52)

• Inhalation Gross Beta 416 0.01 0 (0.006 - 0.096) Substation 16. 7 Mi. SE (0.014- 0.091) (0.014- 0.091)

(pCi/m 3)

Table 18-Weekly Radioiodine 1-131 Activity

'~. ,* ,,_-:._;~f.

Non-routine Reported Measµrements

,,- '1~ o' Activated Charcoal J-131 416 0.07 < MDC <MDC <MDC < MDC (0/52) 0 Inhalation (pCi/m 3 )

NOTES:

a This table summarizes the weekly air iodine-131 cartridge data above the MDC. lodine-131 has an 8-day half-life. With reactor shutdown, it is no longer a radionuclide attributable to SONGS b LLD is the a priori limit as prescribed by the ODCM.

c The Term <MDC as used means that results had no detectable activity above the minimum detectable.

Page 135

APPENDIX B 2018AREOR Table 19- Quarterly Composite Airborne Particulate Gamma Activity 0.121 (28/28) San Luis Rey 0.141 (4/4) 0.141 (4/4)

Air Filter Be-7 32 N/A 0 (0.076 - 0.152) Substation 16.7 Mi. SE (0.111 - 0.187) (0.111 - 0.187)

Inhalation Cs-134 32 0.05 <MDC <MDC <MDC < MDC 0 (pCi/m 3 )

Cs-137 32 0.06 <MDC <MDC <MDC < MDC 0 NOTES:

a Natural occurring radionuclides (K-40, Th-234 and others) were observed in quarterly composite air samples in 2018.

Table 20 - Monthly Ocean Water Activity 350 (40/40) Outfall Unit 3 359 (12/12) 344 (12/12)

K-40 52 N/A 4 (303-405) 1.2 Mi. SSW (328- 384) (315- 369)

Ba-140 52 15 <MDC <MDC <MDC <MDC 4 Cs-134 52 15 <MDC <MDC <MDC <MDC 4 Cs-137 52 18 <MDC -< MDC <MDC <MDC 4 Co-58 52 15 <MDC <MDC <MDC <MDC 4 Co-60 52 15 <MDC <MDC <MDC <MDC 4 Ocean Water 1-131 52 15 <MDC <MDC <Moc- <MDC 4 (pCi/L)

Fe-59 52 30 <MDC <MDC <MDC <MDC 4 La-140 52 15 <MDC <MDC <MDC <MDC 4 Mn-54 52 15 <MDC <MDC <MDC <MDC 4 Nb-95 52 15 <MDC <MDC <MDC <MDC 4 Tritium 52 2000 <MDC <MDC. <MDC < MDC 4 Zn-65 52 30 <MDC <MDC <MDC <MDC 4 Zr-95 52 15 <MDC <MDC < MDC <MDC 4 NOTES:

a Natural occurring radionuclides (K-40 and others) were observed in the 2018 ocean water samples.

Page 136

APPENDIX B 2018AREOR Table 21 - Quarterly Ocean Water Tritium Lower :*

Piithway ,,

• AIIJndicator' Non~'routine * ,

(M~~suren;u~11t 1:.:d\lit of ;:' .Locaii&ns M~~n  :,rr,Bepol't~\I * *. :

~:unit) * *.

• i?.~t¢ctionJ *. (Range) . ,: M,.e.asur~iffonts *::::;

(lLD) ,

Ocean Water Tritium 16 2000 <MDC <MDC <MDC <MDC 0 (pCi/L)

Table 22 - Monthly Drinking Water Activity

.. *'. *a,: , .*,,:*:

• t."

P~thway, .. 1~pe anlNumb;r Non-roulirie.

I (Measurement

,;,itunit) nr* . . *~~t Perf~f:!"ed .:ilF

);:. of ~9ajysis ;:< . * ,\,~Reported

. '.,~a!,lur~~~nts.

i;~

2.27 (3/12) Oceanside City Hall 3.78 (9/12) 3.78 {9/12)

Gross Beta 24 4 0 (1.49 - 3.62) 15.6Mi.SE (2.14-7.64) (2.14-7.64)

Ba-140 24 15 <MDC <MDC <MDC <MDC 0 Cs-134 24 1 15 <MDC <MDC <MDC <MDC 0 Cs-137 24 18 <MDC <MDC <MDC <MDC 0 Co-58 24 15 <MDC <MDC <MDC <MDC 0 Co-60 24 15 <MDC <MDC <MDC <MDC 0 Drinking Water <MDC <MDC <MDC <MDC 0 1-131 24 15 (pCi/L)

Fe-59 24 30 <MDC <MDC <MDC <MDC 0 La-140 24 15 <MDC <MDC <MDC <MDC 0 Mn-54 24 15 <MDC <MDC <MDC <MDC 0 Nb-95 24 15 <MDC <MDC <MDC <MDC 0 Tritium 24 2000 <MDC <MDC <MDC <MDC 0 Zn-65 24 30 <MDC <MDC <MDC <MDC 0 Zr-95 24 15 < MDC <MDC <MDC <MDC 0 NOTES:

a Natural occurring radionuclides (such as Be-7) were detected in the 2018 air particulate samples.

b The location with the highest annual mean for drinking water gross beta is the control location.

Page 137

APPENDIX B 2018 AREOR Table 23 - Semi-annual Shoreline Sediment Gamma Activity (pCi/g) pathway. ,Type and Numb~r Jon-ro~fine .

(Mi~.suremEiljt * :i::,,. of AP!lllysis *;:; . . :;~~R~pb~~.d . t I*

• ;,;Unit) t .* *_ *t"':

• PerfQtmed*. 1;:t: * ~pasurefnents ,3 N/A 11.9 (6/6) Newport Beach 22.1 (2/2) 22.1 (2/2)

Beach Sand K-40 8 0 (5.19 -17.7) 29.2 Mi NW (19.7-24.5) (19.7-24.5)

Direct Exposure Cs-134 8 150 < MDC <MDC <MDC <MDC 0 (pCi/g)

Cs-137 8 180 < MDC <MDC <MDC <MDC 0 NOTES:

a Natural occurring radionuclides such as K-40 were detected in the 2018 shoreline sediment samples.

Table 24 - Semi-annual Ocean Bottom Sediment Gamma Activity (pCi/g)

.(ower ' *,:; * . *, *

• Bc1thway. :' . k,ype al'!J Num.t:iiik': .*J***t

.L f*j .

• . , All;ln~1cat9r.,. * /f:.lon-rotitine * /

(M~~$Urem'{nf .,;. ' of Ai1~1ysis *.~1,

• 1m1 o J>t*** *t* .

D'"e ec 10n **

P.* ..* . '"*-**

Loca.ti.ons Mean

t

,Repo~id *-~

" Unit) **~, Perf9rmed*. ' . .(Lt,.D) . (~ange) Measurements '

Waterborne 16.5 (12/12) Laguna Beach 20.2 (2/2) 20.2 (2/2)

K-40 14 N/A 0 Ocean Bottom (13.5-19.5) 20 - 25 Mi NW (19.8 - 20.6) (19.8 - 20.6)

Sediment Cs-134 14 150 <MDC < MDC < MDC <MDC 0 (pCi/g) Cs-137 14 180 <MDC <MDC <MDC <MDC 0 NOTES:

a Natural occurring radionuclides such as K-40 were detected in the 2018 ocean bottom sediment samples.

Page 138

APPENDIX B 2018 AREOR Table 25 - Semi-annual Marine Animal Gamma Activity (pCi/g) 3.23 (17/17) Unit 1 Outfall 3.25 (9/9) 3.05 (8/8) 0 K-40 N/A (1.40 - 4.28) 0.9 Mi. WSW (1.40 - 4.15) (0.846 - 4.90)

Cs-134 24 130 <MDC <MDC <MDC <MDC 0 Non-Migratory Cs-137 24 150 <MDC <MDC <MDC <MDC 0 Marine Animals Co-58 24 130 <MDC <MDC <MDC <MDC 0

{pCi/g) Co-60 24 130 <MDC <MDC <MDC < MDC. 0 Fe-59 24 260 <MDC <MDC <MDC <MDC 0 Mn-54 24 130 <MDC <MDC <MDC <MDC 0 Zn-65 24 260 <MDC <MDC <MDC <MDC 0 NOTES:

a Natural occurring radionuclides (K-40 and others) were detected in the 2018 non-migratory marine animal samples.

Table 26 - Semi-annual Local Crops Gamma Activity (pCi/g)

3. 79 (5/5) s*oNGS Garden 3. 79 (5/5) 1.94 (4/4) 0 K-40 9 N/A (3.08-4.61) 0.7 Mi. NNW (3.08-4.61) (1.28-2.58)

Local Crops Cs-134 9 60 <MDC <MDC <MDC <MDC 0 ingestion (pCi/g) Cs-137 9 80 <MDC <MDC <MDC <MDC 0 1-131 9 60 <MDC <MDC <MDC <MDC 0 NOTES:

a Natural occurring radionuclides (K-40 and others) were observed in the 2018 local crop samples.

Page 139

APPENDIX B 2018AREOR Table 27 -Annual Soil Gamma Activity, 3" Depth (pCi/g) 14.6 (4/4) Basilone Rd/1-5 18.5 (1/1) 2.88 (1/1) - 0 K-40 5 N/A (7.12-18.5) 2.0 Mi. NW (18.5-18.5) (2.88 - 2.88)

Soil Direct Cs-134 5 60 <MDC <MDC <MDC <MDC 0 Radiation (pCi/g) 0.101 (2/4) Camp San Onofre 0.106 (1/1) 0.099 (1/1)

Cs-137 5 80 0 (0.096 - 0.106) 2.8 Mi. NE (0.106 - 0.106) (0.099 - 0.099)

NOTES:

a K-40 and other radionuclides were detected in the 2018 REMP soil samples.

b The Cs-137 detected in the control and in two indicator samples at the same level (0.1 pCi/g) in soil samples are due to factors external to SONGS (legacy fallout from nuclear weapons testing, and Chernobyl) and are not attributable to SONGS.

Table 28 -Semi-Annual Kelp Gamma Activity (pCi/g) 10.8 (5/5) Salt Creek 14.1 (1/1) 14.1 (1/1)

K-40 6 N/A 0 Kelp Ingestion (8.23-13.4) 11 -13 Mi. WNW-NW (14.1 -14.1) (14.1 -14.1)

{pCi/g) 0.051 (4/5) San Mateo Kelp Bed 0.104 (1/2) 0.06 (1/1) 1-131 6 0.06 0 (0.018 - 0.104) 3.8 Mi. WNW (0.104-0.104) (0.06 - 0.06)

NOTES:

a The 1-131 analysis results was confirmed above the MDC in control and indicator samples is attributable to sewage plant discharges of medically administered 1-131. Kelp has an iodine bio-magnification factor of 1100.

b K-40 and other naturally occurring radionuclides were detected in the 2018 kelp samples.

Page I 40

APPENDIX D 2018AREOR

. /

APPENDIX C.

SUMMARY

OF QUALITY CONTROL PROGRAMS Page 141

APPENDIX D 2018AREOR Summary All REMP samples are collected, shipped, and analyzed in accordance with NRC Regulatory Guide 4.15. Marine radiological environmental samples are collected by a vendor, MBC Environmental, per the vendors Quality Assurance manual. REMP sample analysis is performed by the Contracted Environmental Analysis Laboratory (CEAL) in accordance with the Laboratory Quality Assurance Plan. During 2018 the CEAL was General Engineering Laboratory (GEL). The CEAL for REMP TLDs was Stanford Dosimetry.

Quarterly Duplicate TLDs SONGS deployed a duplicate TLD package in the same canister as TLD 66 and annual duplicate TLD package in the canister for as TLD 67. The quarterly dose measured by these duplicate TLD packages is statistically equivalent.

• Table 29 - 2018 Quarterly Duplicate TLD Data Comparison

. TLD # ,* 15T QUARTER. . . 2N.0 QUARTER . c . 3Ro .QUARTER *.*.. *. . 4Tt-1 QUARTER:

t;:\:. .!\.>* *,,:i,;l* 1.- (mI~f+./:::,1tsigm~t-~1 :* .(mR);+/:. 1if~igmii;,f~ :**(mRr.:i:,;; 1sigma'.<, rr(mRlL~/.!*,1::,sigtna '

TLD 66 13.91 +/- 0.98 13.44 +/- 0.90 13.33 +/- 0.80 13.32 +/- 0.89 TLD 200 13.46 +/- 0.73 13.10+/-0.84 13.46 +/- 0.61 13.56 +/- 0.75 NOTES:

a. Data is reported as mR per standard quarter+/- 1 sigma Annual Duplicate TLDs SONGS deployed an annual duplicate TLD package in the same location and canister as REMP TLD 67. The average four quarterly TLD 67 exposure results (expressed in units of mR/91 days) is statistically equal to the annual TLD 201 results (also in units of mR/91 days) for the period spanning July 2017 to June 2018.

Table 30 - 2018 Annual Duplicate TLD Data compared to quarterly data from the same canister

c,T~D,6?'.(n-,R/~.j .days:t;t- one,sJgma) , . TLP *201 (mR/91._days +{:;J>ne sigma)

• }J:  :'(Jul 20'41* to Jiifill*201 sr

• y,,; . :1 * 'July"201i'to Junlf2018f ,:;_ .

16.82 +/-0.82 16.71 +/- 0.81 Calibration of Air Sampler Volume Meters All REMP air sampler volume meters are calibrated annually using standards referenced to NIST. Calibration of all REMP air samplers is verified quarterly to ensure the volume meters remain within limits and the meters are removed from service if they fail a quarterly test. This is an a posteriori review of the volume meter performance to evaluate method bias and to identify possible outlier analysis results. A bias was not detected in 2018. A review of the air particulate beta results over the course of the year did not indicate a particular bias for any particular sampler. The trends in the beta results over the course of the year were consistent, within the limitations of the gross beta method of analysis.

Page 142

APPENDIX D 2018 AREOR lnterlaboratory Cross-Check Program The State of California Department of Public health (CDPH) participates in a comprehensive radiological environmental split sampling program in conjunction with SONGS. In 2018 the CDPH acquired split samples, collected by an independent third party, from the following SONGS media: atmospheric radioactivity, non-migratory marine animals, kelp, ocean bottom sediments, ocean water gamma emitters, and ocean water tritium.

The CDPH also conducts a parallel terrestrial direct radiation (TLD) measurement effort at SONGS. Refer to Appendix H for a discussion of the CDPH TLD data.

CPD'iJ Atmospheric Radioactivity Gross Beta, 1-131 and quarterly gamma analysis results were substantially similar to the SONGS results for the same media. As expected, both the CDPH DWRL (Drinking Water and Radiation Laboratory) and the SONGS contracted laboratory (GEL) found a gross beta signal above the detection limit. Both labs detected naturally occurring Be-7 in the quarterly composite gamma particulate media samples. Both labs did not detect anthropogenic radionuclides in the split samples with the exception of kelp. The SONGS lab (GEL) reported 1-131 above the MDC; the CDPH lab did not detect 1-131 in kelp. Both labs detected naturally occurring K-40 in the sediment, ocean water, and non-migratory marine animals. The SONGS and the CDPH analysis results for all 2018 tritium in ocean water samples were less than detectable. Refer to the tabulated results below.

CDPH and SONGS split sample TRITIUM in ocean water A Station Discharge 1/15/2018 -31 +/- 227 388 -188 +/- 135 240 Outfall - Unit 1 2/15/2018 -49 +/- 376 638 -123 +/- 137 240 3/19/2018 191 +/- 276 428 56 +/-125 212 4/18/2018 15 +/- 319 319 31 +/- 130 221 5/15/2018 113 +/- 266 427 -106 +/-139 243 6/18/2018 -18 +/- 293 495 -160 +/-138 243 7/16/2018 -25 +/- 406 686 24 +/- 126 216 8/15/2018 240 +/- 324 501 70 +/- 127 216 9/17/2018 -234 +/- 306 550 10 +/- 129 221 10/16/2018 -51 +/- 310 530 -2 +/- 129 221 11/15/2018 125 +/- 140 194 104 +/- 131 221 12/18/2018 24 +/- 411 685 143 +/- 132 221 Page I 43

APPENDIX D 2018 AREOR B Outfall - Unit 2 1/15/2018 -71 +/- 231 403 -112 +/-.137 240 2/15/2018 -69 +/- 371 633 -211 +/- 135 240 3/19/2018 211 +/- 284 437 21 +/-130 221 4/18/2018 128 +/- 331 535 -10 +/- 129 221 5/15/2018 101 +/- 266 429 -148 +/-138 243 6/18/2018 134 +/-.303 489 9 +/- 142 243 7/16/2018 -240 +/- 386 . 46 +/- 127 216 8/15/2018 106 +/- 313 506 63 +/-_ 127 216 9/17/2018 -83 +/- 321 551 -22 +/- 128 221 10/16/2018 -53 +/- 305 521 -1 +/- 129 221 11/15/2018 39 +/-122 192 105 +/-131 221 12/18/2018 -205 +/- 388 689 81 +/- 131 221 C

• Outfall - Unit 3 1/15/2018 -12 +/- 236 398 -140 +/-136 240 2/15/2018 296 +/- 401 630 -239 +/- 134 240 3/19/2018 79 +/- 268 434 -24 +/-129 221 4/18/2018 109 +/- 327 532 -12 +/- 129 221 5/15/2018 129 +/- 275 439 -49 +/- 141 243 6/18/2018 66 +/- 299 492 -44 +/- 141 243 7/16/2018 307 +/-441 685 90 +/- 128 216 8/15/2018 246 +/- 328 507 -7 +/- 126 216 9/17/2018 -34 +/- 329 557 -33 +/-128 221 10/16/2018 108 +/- 324 524 -52 +/-127 221 11/15/2018 -22 +/-109 190 133 +/- 132 221 12/18/2018 -24 +/s 408 690 112 +/- 132 221 D Newport Beach (Control) 1/15/2018 133 +/- 256 403 -154 +/-136 240 2/15/2018. 178 +/- 392 632 -249 +/-134 240 3/19/2018 81 +/- 268 435 -5 +/- 129 221 4/18/2018 129 +/- 323 522 19 +/- 130 221 5/15/2018 -129 +/- 271 477 -86 +/-140 243 6/18/2018 -20 +/- 292 493 -122 +/-139 243 7/16/2018 -72 +/- 404 692 27 +/- 126 216 8/15/2018 138 +/- 315 503 80 +/- 128 216 9/17/2018 221 +/-330 551 65 +/-130 221 10/16/2018 297 +/-340 519 12 +/-129 221 11/15/2018 17 +/-119 193 95 +/-131 221 12/18/2018 -275 +/-381 691 121 +/-132 221 Note that the EPA drinking water maximum permissible tritium activity is 20,000 pCi / liter.

Page I 44

APPENDIX D 2018AREOR The SONGS contracted lab (GEL) participates in a number of independent cross check programs, including the National Institute of Standards and Technology (NIST) and Analytics cross-check programs. A summary of the cross-check data is included below. Non-agreement results were resolved in accordance with GEL's corrective action program.

Per the 2018 Annual Environmental Quality Assurance (QA) Report, GEL was provided ninety-two (92) individual environmental analyses. The accuracy of each result reported to Eckert & Ziegler Analytics, Inc. is measured by the ratio of GEL's result to the known value. All results fell within GEL's acceptance criteria (100%).

In 2018, the environmental TLDs, routine quality control (QC) testing was performed for dosimeters issued by the Environmental Dosimetry Company (EDC). During 2018, 100%

(72/72) of individual dosimeters evaluated against the EDC internal performance acceptance criteria (high-energy photons only) met the criterion for accuracy and 100% (72/72) met the criterion for precision.

The GEL and Stanford Dosimetry performance meets the criteria described in Reg. Guide 4.15 and ANSI/HPS N13.37-2014.

Page 145

APPENDIX D 2018 AREOR Analytical Laboratory Cross Check Program Summary TABLE 1 - 2018 RADIOLOGICAL PROFICIENCY TESTING RESULTS AND ACCEPTANCE CRITERIA

• .,Report .. ,, ...,, *.*;: ,> *:\: <:* .

,F'T Quarter I... Closi.ng I

• F'fovider * '* Year "Received :;.:~~.;~~,/ \*t~r~t .

• Oat~_: ",_*[,: \.,'..c ,c: *~ ; '.':; * ~

"Units Analyte Rep9rted Value ;

Assign'ect

value_

Acceptance

_Limits-*

"\,

Pertorrnance

• Evaluation .* ,:

>. '>: *.. ,;'.,.i, ',, "' ~;'.'-  !- '~ - c

..* " * :, ' : +

ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Barium-133 97.6 95.1 80.2 - 105 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Cesium-134 64.9 65.6 53.4 - 72.2 Acceptable ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Cesium-137 117 112 101 -126 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Cobalt-BO 122 114 103-128 Acceptable ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Zinc-65 320 277 249 - 324 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Gross Alpha 67.7 72.4 38.1 - 89.2 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Gross Alpha 66.4 72.4 38.1 - 89.2 Acceptable ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Gross Beta 47.6 54.8 37.5 - 61.7 Acceptable ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Radium-226 16.2 14.2 10.6 -16.3 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Radium-226 16.3 14.2 10.6-16.3 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Radium-226 5 4.21 2.43 - 5.81 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Radium-228 4.44 4.21 2.43 - 5.81 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Radium-228 65.4 58.6 47.8 - 64.5 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Uranium (Nat) 56.4 58.6 47.8-64.5 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Uranium (Nat) 65.4 58.6 47.8 - 64.5 Not Acceptable Uranium (Nat)

ERA 1st/2018 2/26/18 RAD-112 Water µg/L 97.6 86.2 70.3 - 94.9 Not Acceptable mass Uranium (Nat)

ERA 1st/ 2018 2/26/18 RAD-112 Water µg/L 93.3 86.2 70.3 - 94.9 Acceptable mass ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Tritium 20000 21200 18600 - 23300 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Tritium 20200 21200 18600 - 23300 Acceptable ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Strontium-89 59.7 65.2 52.9 - 73.2 Acceptable ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Strontium-89 68.6 65.2 52.9 - 73.2 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L Strontium-90 36.1 39.2 28.8 - 45.1 Acceptable ERA 1st/2018 2/26/18 RAD-112 Water pCi/L Strontium-90 36.9 39.2 28.8 - 45.1 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L lodine-131 25.3 28.1 23.4 - 33.0 Acceptable ERA 1st/ 2018 2/26/18 RAD-112 Water pCi/L lodine-131 28.6 28.1 23.4 - 33.0 Acceptable EZA 1st/ 2018 05/11/18 E12171 Cartridge pCi lodine-131 9.20E+01 8.52E+01 0.97 Acceptable EZA 1st/ 2018 05/11/18 E12172 Milk pCi/L Strontium-89 9.1BE+01 9.01 E+01

• 1.02 Acceptable EZA 1st/2018 05/11/18 E12172 Milk pCi/L Strontium-90 8.00E+D1 1.25E+02 0.64 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L lodine-131 1.05E+02 1.08E+02 0.97 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Cerium-141 7.23E+01 7.70E+01 0.94 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Cobalt-58 1.11E+02 1.14E+02 0.97 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Cobalt-BO 1.9DE+02 1.87E+02 1.02 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Chromium-51 3.00E+02 3.2BE+02 0.92 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Cesium-134 1.58E+02 1.80E+02 0.88 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Cesium-137 1.75E+02 1.72E+02 1.02 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Manganese-54 1.36E+02 1.31 E+02 1.04 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L lron-59 1.52E+02 1.39E+02 1.10 Acceptable EZA 1st/ 2018 05/11/18 E12173 Milk pCi/L Zinc-65 2.73E+02 2.44E+02 1.12 Acceptable EZA 1st/ 2018 05/11/18 E12174 Water pCi/L lodine-131 9.37E+01 9.1 OE+01 1.03 Acceptable EZA 1st/ 2018 05/11/18 E12174 Water pCi/L Cerium-141 7.86E+01 7.34E+01 1.07 Acceptable EZA 1st/ 2018 05/11/18 E12174 Water pCi/L Chromium-51 3.44E+02 3.10E+02 1.11 Acceptable EZA 1st/ 2018 05/11/18 E12174 Water pCi/L Cesium-134 1.61E+02 1. 71 E+02 0.94 Acceptable EZA 1st/2018 05/11/18 E12174 Water pCi/L Cesium-137 1.64E+02 1.64E+02 1.00 Acceptable EZA 1st/2018 05/11/18 E12174 Water pCi/L Cobalt-58 1.92E+02 1.78E+02 1.08 Acceptable EZA 1st/2018 05/11/18 E12174 Water pCi/L Manganese-54 1.36E+02 1.25E+02 1.09 Acceptable EZA 1st/ 2018 05/11/18 E12174 Water pCi/L lron-59 1.48E+02 1.32E+02 1.12 Acceptable Page I 46

APPENDIX D 2018 AREOR Report PT Quarter I Closing( ,Sample. Sample. Reported .Assigned_' Acceptance Performance Units Analyte * *Value . Evaluation Provider Year Received* Numtier. Media Value Limits Date EZA 1st/ 2018 05/11/18 E12174 Water pCi/L Zinc-65 2.53E+02 2.33E+02 1.09 Acceptable EZA 1st/ 2018 05/11/18 E12174 Water pCi/L Cobalt-60 1.92E+02 1.78E+02 1.08 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Actinium-228 1300 1240 818-1560 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Americium-241 97 74.7 40.3 -106 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Bismuth-212 1410 1240 355 - 1850 Acceptable ERA 2nd/2018. 05/22/18 MRAD-28 Soil pCi/kg Bismuth-214 1200 1760 845 - 2620 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Cesium-134 4780 5330 3640 - 6370 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Cesium-137 4150 4210 3180 - 5320 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Cobalt-60 7880 8060 6350 - 9950 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Lead-212 1210 1240 865 - 1570 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Lead-214 1470 1850 777 -2910 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Plutonium-238 1460 1470 733 - 2230 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Plutonium-239 1240 1330 725-1910 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Potassium-40 10300 10600 7300 -12700 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Strontium-90 2950 4500 1400 - 7010 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Thorium-234 2240 1800 680 - 3080 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-234 2190 1820 853 - 2380 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-234 1830 1820 853 - 2380 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-234 1160 1820 853 - 2380 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-238 1530 1800 988 - 2420 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-238 2000 1800 988 - 2420 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-238 2020 1800 988 - 2420 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 4670 3700 2050 - 4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 4210 3700 2050 - 4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 4020 3700 2050 -4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Uranium-Total 2690 3700 2050 - 4780 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 6030 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 4880 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 6050 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil µg/kg U-Total (mass) 6970 5400 2440 - 7290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Soil pCi/kg Zinc-65 2150 1990 1590 - 2710 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Americium-241 39.00 3880 2400 - 5480 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Cesium-134 2150 1950 1290 - 2600 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Cesium-137 2720 2160 1660-2910 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Cobalt-60 672 491 385 - 642 Not Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Curium-244 2620 2630 1480 - 3270 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Manganese-54 <32.9 <300 <300 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Plutonium-238 2370 2020 1400 - 2600 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Plutonium-239 4760 4160 2880 - 5270 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Potassium-40 37500 30900 23200 - 39100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Strontium-90 3220 3330 1880 -4340 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-234 5220 4050 2850 - 5170 Not Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-238 5150 4010 2830 - 5020 Not Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-Total 10800 8240 5260 - *11100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 15500 12100 9290 - 15000 Not Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Zinc-65 3420 2400 1790 - 3560 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-Total 559'0 6290 4260 - 7830 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Uranium-Total 6238 6290 4260 - 7830 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 8910 9250 6200 - 11700 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 8440 9250 6200 - 11700 Acceptable Page 147

APPENDIX D 2018AREOR Report "'

P,: Quarter I Closing/ *.* Sample* -Sample Reporte~ Assigned Acceptance Performance Provider Year Received' . ,*_'Number ,-M~dia Units '. Analyte Value Value

• Limits* Evaluation .

Date ERA 2nd/2018 05/22/18 MRAD-28 Veg. µg/kg U-Total (mass) 9030 9250 6200 - 11700 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Veg. pCi/kg Zinc'65 907 853 615-1200 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Americium-241 80.6 76.4 47.1 -103 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Cesium-134 1140 1100 700 -1360 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Cesium-137 1490 1390 1040 -1830 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Cobalt-BO 1120 1030 797 - 1290 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter lron-55 242 256 79.4 - 500 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Manganese-54 <7.53 <50.0 0.00 - 50.0 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Plutonium-238 54.1 54.3 37.2 - 71.4 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Plutonium-239 58.2 62 44.9 - 81.0 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Strontium-90 52.2 52.4 25.6 - 78.5 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-234 71.1 73.1 45.3-110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-234 79 73.1 45.3-110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-238 70.7 72.4 46.8 -100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-238 77.1 72.4 46.8 -100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-Total 154 149 82.5 - 227 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-Total 145 149 82.5 - 227 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Uranium-Total 159.5 149 82.5 - 227 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter µg/Filter U-Total (mass) 230 217 139 - 306 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter µg/Filter U-Total (mass) 212 217 139 - 306 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter µg/Filter U-Total (mass) 231 217 139 - 306 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Zinc-65 1160 984 705 -1360 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Gross Alpha 112 85.5 28.6 -133 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Filter pCi/Filter Gross Beta 54.9 45.2 28.6 - 65.9 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Americium-241 150 140 94.3 -188 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Cesium-134 2380 2510 1840 - 2880 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Cesium-137 1480 1400 1190-1680 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Cobalt-BO 2570 2540 2210 - 2970 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L lron-55 923 984 587 -1340 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Manganese-54 <6.36 <100 0.00 -100 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 1,/Vater pCi/L Plutonium-238 108 128 94.7-159 Acceptabl~

ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Plutonium-239 73.3 85.8 66.6 -108 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Strontium-90 685 714 465 - 944 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-234 82.1 90.3 67.8 - 116 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-234 92 90.3 67.8-116 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-234 87.1 90.3 67.8 - 116 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-238 86.7 89.5 68.2 - 110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-238 84.1 89.5 68.2-110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-238 98 89.5 68.2 - 110 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 181 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 173 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 180 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Uranium-Total 185 184 135 - 238 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 270 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 260 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 252 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water µg/L U-Total (mass) 276 268 214 - 324 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Zinc-65 2160 1960 1630 - 2470 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Gross Alpha 125 89.5 31.8 -139 Acceptable ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Gross Beta 59.6 61 34.9 - 90.4 Acceptable Page 148

APPENDIX D 2018AREOR Rep~rt

' ' PT  :* Quarter./ Closing/ I* Sample : Saipple Reported , Assigned Acceptance

• Performance Units Analyte Provider Year Received Number Media' Value Value Limits .Evaluation Date ,., *.,

ERA 2nd/2018 05/22/18 MRAD-28 Water pCi/L Tritium 18900 19400 13000 - 27700 Acceptable EZA 2nd/2018 07/07/18 E12171 Cartridge pCi lodine-131 7.22E+01 7.16E+01 1.01 Acceptable EZA 2nd/2018 07/07/18 E12172 Milk pCi/L Strontium-89 9.58E+01 8.46E+01 1. 13 Acceptable EZA 2nd/2018 07/07/18 E12172 Milk pCi/L Strontium-90 8.47E+OO 1. 14E+01 0.74 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L lodine-131 7.89E+01 7.19E+01 1.10 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cerium-141 9.01 E+01 8.22E+01 1.10 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cobalt-58 9.26E+01 8.90E+01 1.04 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cobalt-60 1.18E+02 1.13E+02 1.04 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Chromium-51 2.58E+02 2.39E+02 1.08 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cesium-134 1.10E+02 1.14E+02 0.97 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Cesium-137 1.04E+02 9.88E+01 1.05 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Manganese-54 1.42E+02 1.30E+02 1.09 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L lron-59 8.87E+01 8.60E+01 1.03 Acceptable EZA 2nd/2018 07/07/18 E12173 Milk pCi/L Zinc-65 1.83E+02 1.57E+02 1.16 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L lodine-131 7.31E+01 7.44E+01 0.98 _Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cerium-141 1.02E+02 8.58E+01 1.19 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Chromium-51 2.73E+02 2.49E+02 1.10 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cesium-134 1.06E+02 1.19E+02 0.89 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cesium-137 9.86E+01 1.03E+02 0.96 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cobalt-58 9.76E+01 9.29E+01 1.05 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Manganese-54 1.47E+02 1.35E+02 1.09 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L lron-59 1.08E+02 8.97E+01 1.20 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Zinc-65 1.97E+02 1.64E+02 1.20 Acceptable EZA 2nd/2018 07/07/18 E12174 Water pCi/L Cobalt-60 1.22E+02 1.18E+02 1.03 Acceptable MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Americium-241 1.84 False Pas Test Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Cesium-134 1.85 False Pas Test Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Cesium-137 4.85 4.6 Sens. Eval. Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Cobalt-57 798 826 578-1074 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Cobalt-60 581 560 392-728 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg lron-55 67 False Pas Test Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Manganese-54 1060 1010 707-1313 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Nickel-63 1.05 False Pas Test Acceptable MaS38 '

MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Plutonium-238 42.7 45.2 31.6-58.8 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Pu-239/240 46.9 50.8 35.6-66.0 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Potassium-40 649 577 404-750 Acceptable MaS38 MAPEP

- 2nd/2018 05/31/18 MAPEP Soil Bq/Kg Strontium-90 -1.08 False Pas Test Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Technetium-99 890 980 686-1274 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg U-234/233 58.9 52.9 37.0-68.8 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Uranium-238 ,.I 134 141 99-183 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Soil Bq/Kg Zinc-65 1060 960 672-1248 Acceptable MaS38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Americium-241 0.685 0.709 0.496-0.922 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Cesium-134 9.140 10.2 7.1-13.3 Acceptable MaW38 Page 149

APPENDIX D 2018 AREOR Report PT Quarter'/ Closing, " *s~mp!e:,j Sample Rep9rted Assigned . Acceptance P~rforn:!ai;ic.e Units Analyt~

"Provider Year Received :.Nurjiber *. .Media* _. Value Value *Limits .Evaluation Date '

MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Cesium-137 12.8 12.2 8.5-15.9 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Cobalt-57 -0.042 False Pos Test Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Cobalt-60 12.1 11.5 8.1-15.0 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Hydrogen-3 1.14 False Pos Test Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L lron-55 11.90 11.1 7.8-14.1 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Manganese-54 9.35E-04 False Pos Test Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Nickel-63 14.5 14.0 9.8-18.2 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Plutonium-238 0.014 0.023 Sens. Eval. Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Pu-239/240 0.586 0.600 0.420-0.780 Acceptable MaW38 MAPEP- 18-*

MAPEP 2nd/2018 05/31/18 Water Bq/L Potassium-40 -0.23 False Pos Test Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Radium-226 0.249 0.257 0.180-0.334 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Strontium-90 10.70 11.400 8.0-14.8 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Technetium-99 3.84 4.4 3.06-5.68 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Uranium- 234/233 0.45 0.43 0.301-0.559 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Uranium-238 0.48 0.44 0.306-0.568 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Water Bq/L Zinc-65 15.7 14.30 0.0-18.6 Acceptable MaW38 MAPEP MAPEP 2nd/2018 05/31/18 Filter ug/sample Uranium-235 0.076 0.0739 0.0517-0.0961 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter ug/sample Uranium-238 10.60 10.4 7.3-13.5 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter ug/sample Uranium-Total 10.68 10.5 7.4-13.7 Acceptable RdF38 MAPEP- 18' MAPEP 2nd/2018 05/31/18 Filter Bq/sample Americium-241 0.0646 0.0670 0.047-0.087 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Cesium-134 0.72 0.675 0.473-0.878 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Cesium-137 -0.023 False Pos Test Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Cobalt-57 1.22 1.18 0.83-1.53 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Cobalt-60 0.010 False Pos Test Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Manganese 54 0

1.08 1.03 0.72-1.34 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Plutonium-238 0.0440 0.0445 0.0312-0.0579 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Pu-239/240 0.0010 False Pos Test Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Strontium-90 0.840 1.010 0.71-1.31 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Uranium- 234/233 0.121 0.124 0.087-0.161 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Uranium-238 0.126 0.128 0.090-0.166 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Filter Bq/sample Zinc-65 1.54 1.33 0.93-1.73 Acceptable RdF38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Bq/sample Americium-241 0.107 0.106 0.07 4-0.138 Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Bq/sample Cesium-134 3.17 3.23 2.26-4.2 Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Bq/sample Cesium-137 4.03 3.67 2.57-4.77 Acceptable RdV38 Page I 50

APPENDIX D 2018AREOR

'  ; Repprt '

pT Quarter/ Closing/ 1,,.\ sa111pi~ : , ~s~~i>.1;, ' Units ,Analyte

. R~ported

• Assigned * *Acceptance Performance

.Provider Year' Received c,Number:. .'* :*: IVl_!<fi~:..: .. -Value .. Value* Limits* O:Evaluation.,

.. Date . ,

MAPEP 3.09-5.75 MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Cobalt-57 4.76 4.42 Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Cobalt-60 2.49 2.3 1.60-2,98 Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg, Sq/sample Manganese-54 3.02 2.66 1.86-3.46 Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Plutonium-238 0.0005 False Pos Test Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Pu-239/240 0.0679 0.0770 0.054-0.1 Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Strontium-90 0.61 0.675 0.473-0.878 Acceptable RdV38 MAPEP 0.125-0.233 MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Uranium- 234/233 0.21 0.179 Acceptable RdV38 MAPEP 0.130-0.242 MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Uranium-238 0.197 0.186 Acceptable RdV38 MAPEP MAPEP 2nd/2018 05/31/18 Veg. Sq/sample Zinc-65 0.02 False Pos Test Acceptable RdV38 MAPEP 1.35-2.51 MAPEP 2nd/2018 05/31/18 Water Bq/L lodine-129 2.00 1.93 Acceptable XaW38 ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Barium-133 28.5 25.6 19.9-29.4 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Cesium-134 15.9 15.7 11.4-18.2 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Cesium-137 196 192 173 - 213 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114* Water pCi/L Cobalt-60 122 119 107 - 133 Acceptable ERA 3rd/2018 08/23/18 RAD-114 Water pCi/L Zinc-65 196 177 159 -208 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Gross Alpha 15.5 16 7.79 - 22.6 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Gross Alpha 18.2 16 7.79 - 22.6 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Gross Beta 43.6 49 33.2 - 56.1 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Radium-226 8.44 9.08 6.81 - 10.6 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Radium-228 2.72 2.28 1.07 - 3.60 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Radium-228 3.3 2.28 1.07 - 3.60 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Uranium (Nat) 53.8 51.8 42.2 - 57.1 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Uranium (Nat) 50.3 51.8 42.2 - 57.1 Acceptable Uranium (Nat)

ERA 3rd/2018 08/23/18 RAD-114 Water µg/L 80.3 75.5 61.5 - 83.2 Acceptable mass Uranium (Nat)

ERA 3rd/ 2018 08/23/18 RAD-114 Water µg/L 78.36 75.5 61.5 - 83.2 Acceptable mass Uranium (Nat)

ERA 3rd/ 2018 08/23/18 RAD-114 Water µg/L 77.8 75.5 61.5 - 83.2 Acceptable mass ERA 3rd/2018 08/23/18 RAD-114 Water pCi/L Tritium 19900 20400 17900 - 22400 Acceptable ERA 3rd/2018 08/23/18 RAD -114 Water pCi/L Tritium 21200 20400 17900 - 22400 Acceptable ERA 3rd/2018 08/23/18 RAD-114 Water pCi/L Strontium-89 61.5 62.7 50.7 - 70.6 Acceptable ERA 3rd/ 2018 08/23/18 RAD-114 Water pCi/L Strontium-89 69 62.7 50.7 - 70.6 Acceptable ERA 3rd/2018 08/23/18 RAD-114 Water pCi/L Strontium-90 34.4 40.1 29.5 - 46.1 Acceptable ERA 3rd/2018 08/23/18 RAD-114 Water pCi/L Strontium-90 36.2 40.1 29.5 -46.1 Acceptable ERA 3rd/2018 08/23/18 RAD-114 Water pCi/L lodine-131 25.6 28.1 23.4- 33.0 Acceptable ERA 3rd/2018 08/23/18 RAD-114 Water pCi/L lodine-131 28.7 28.1 23.4 - 33.0 Acceptable EZA 3rd/2018 11/12/18 E12240 Cartridge pCi lodine-131 7.95E+01 8.03E+01 0.99 Acceptable EZA 3rd/2018 11/12/18 E12241 Milk pCi/L Strontium-89 8.57E+01 8.17E+01 1.05 Acceptable EZA 3rd/2018 11/12/18 E12241 Milk pCi/L Strontium-90 9.22E+OO 1.48E+01 0.62 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L lodine-131 7.18E+01 5.82E+01 1.23 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cerium-141 1.43E+02 1.28E+02 1.12 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Chromium-51 2.54E+02 2.65E+02 0.96 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cesium-134 1.18E+02 1.23E+02 0.96 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cesium-137 1.53E+02 1.47E+02 1.04 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cobalt-58 1.54E+02 1.44E+02 1.07 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Manganese-54 1.84E+02 1.67E+02 1.09 Acceptable Page 151

APPENDIX D 2018AREOR

. Report

• pT* .Quarter I Closing/ *** .Sainple Sample Reported* Assigned Acce'ptance . Performance

Media*** Units Analyte

• Provider Year .Received Number- V:alue *.value Limits Evaluation Date .. . '

EZA 3rd/2018 11/12/18 E:12242 Milk pCi/L lron-59 1.20E+02 1.19E+02 1.01 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Zinc-65 2.44E+02 2.01E+02 1.22 Acceptable EZA 3rd/2018 11/12/18 E12242 Milk pCi/L Cobalt-60 2.02E+02 1.90E+02 1.06 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L lodine-131 6.76E+01 6.25E+01 1.08 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cerium-141 1.48E+02 1.33E+02 1.11 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Chromium-51 2.92E+02 2.75E+02 1.06 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cesium-134 1.20E+02 1.28E+02 0.94 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cesium-137 1.64E+02 1.54E+02 1.07 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cobalt-58 1.53E+02 1.50E+02 1.02 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Manganese-54 1.91E+02 1.74E+02 1.1 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L lron-59 1.39E+02 1.24E+02 1.12 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Zinc-65 2.41E+02 2.09E+02 1.15 Acceptable EZA 3rd/2018 11/12/18 E12243 Water pCi/L Cobalt-60 2.09E+02 1.98E+02 1.06 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Actinium-228 3740 3280 2030 -4540 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Americium-241 891 937 459 - 1420 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Bismuth-212 3990 3400 1810 -4990 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Bismuth-214 1310 1370 841 -1900 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Cesium-134 5710 5400 3200 - 7600 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Cesium-137 4160 3910 2340 - 5480 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Cobalt-60 4940 4890 3410 - 6370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Lead-212 4250 3380 2050 - 4720 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Lead-214 1590 1450 883 - 2020 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Manganese-54 <32.8 <1000 <1000 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Plutonium-238 1090 1150 662 - 1650 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Plutonium-239 735 756 561 - 950 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Potassium-40 24800 24300 17300 - 31400 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Strontium-90 4580 4340 2240 - 6440 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Thorium-234 1610 1470 549 - 2390 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-234 1730 1050 105 -2370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-234 1230 1050 105 -2370 Acceptable ERA 4th/2018 11/?0/18 MRAD-29 Soil pCi/kg Uranium-234 1060 1050 105_ - 2370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-238 1210 1030 103 -2740 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-238 1100 1030 103-2740 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-238 660 1030 103 -2740 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-Total 2320 2030 203 -4560 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-Total 1890 2030 203 -4560 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg Uranium-Total 2830 2030 203 -4560 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg U-Total (mass) 2010 2420 242 -6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil pCi/kg U-Total (mass) 3300 2420 242 - 6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil µg/kg U-Total (mass) 2010 2420 242 -6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil µg/kg U-Total (mass) 3620 2420 242 -6320 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Soil µg/kg Zinc-65 4310 4020 2650 - 5380 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Americium-241 1770 1750 1080 - 2470 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Cesium-134 2000 1970 1310 -2620 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Cesium-137 692 613 471 - 825 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Cobalt-60 1930 1810 1420 - 2370 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Curium-244 4840 4840 2730 - 6020 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Manganese-54 <52.1 <300 <300 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Plutonium-238 3280 3240 2240 -4180 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Plutonium-239 3170 3070 2120 - 3890 Acceptable Page j 52

APPENDIX D 2018AREOR

• ,, ., >

  .*.* < V.' .. ',

.';:er Analyte*

,~eported Assigned * .. Acceptance**; Pe.rformance

'Provider' '"' ,q:, ,,*yal~~ . ,; ,Valu.e* _Lirrii~: ;,,; :\Evalu~tion. *

,/,:

,c ,.,

ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Potassium-40 38600 34500 25900 - 43700 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Strontium-90 6220 5930 3340 - 7730 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Uranium-234 1800 1670 1170 - 2130 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Uranium-238 1780 1660 1170 - 2080 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Uranium-Total 3710 3390 2170 - 4570 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg U-Total (mass) 5360 4990 3830 - 6180 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Veg. pCi/kg Zinc-65 2380 2230 1660 - 331 O Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Americium-241 62 64.1 45.8 ~ 85.5 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Cesium-134 862 921 597 - 1130 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Cesium-137 373 373 306 - 489 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Cobalt-60 1200 1130 960 - 1440 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter lron-55 899 910 332 - 1450 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Manganese-54 <5.41 <50.0 <50.0 Acceptable ERA 4th/2018 11/20/!8 MRAD-29 Filter pCi/Filter Plutonium-238 34.5 34.9 26.3 - 42.9 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Plutonium-239 11.7 11.2 8.37 - 13.5 Acceptable ERA 4th/2018 11/20/18 MRAo:29 Filter pCi/Filter Strontium-90 87.6 89.4 56.5 - 122 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-234 55.1 52.1 38.6 - 61.0 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-234 49 52.1 38.6 - 61.0 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-238 51.1 51.6 39.0 - 61.6 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-238 47.4 51.6 39.0 - 61.6 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-Total 102.5 106 77.4 - 126 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Uranium-Total 103 106 77.4 - 126 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter µg/Filter U-Total (mass) 153 156 125 - 183 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter µg/Filter U-Total (mass) 142 156 125 - 183 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Zinc-65 771 660 541 - 101 O Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Gross Alpha 54.2 55.3 28.9 - 91.1 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Filter pCi/Filter Gross Beta 75.6 86.5 52.4 - 131 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Americium-241 164 172 118 - 220 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Cesium-134 2200 2310 1740 - 2540 Acceptable ERA <lth/2018 11/20/18 MRAD-29 Water pCi/L Cesium-137 910 898 769 - 1020 Acceptable ERA 4th/2018 11(20/18 MRAD-29 Water pCi/L Cesium-137 910 898 76~ - 1020 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Cobalt-60 1630 1510 1300 - 1730 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L lron-55 2610 1580 928 - 2300 Not Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Manganese-54 <6.61 <100 <100 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Plutonium-238 108 141 84.8 - 183 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Plutonium-239 125 163 101 - 201 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Strontium-90 321 275 198 - 340 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-234 94 91.6 69.7 - 105 Acceptable ERA 4th/2018 11/20/18 MRAD-29

• Water pCi/L Uranium-234 95.8 91.6 69.7 -105 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-234 84.6 91.6 69.7 - 105 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 93.3 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 88.3 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 88.5 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-238 93.3 90.8 70.4 - 107 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-Total 184.3 187 146 - 213 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Uranium-Total 178 187 146 - 213 Acceptable ERA 4th/2018 11/20/18 MRA0-29 Water µg/L U-Total (mass) 265 273 221 - 310 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Zinc-65 1990 1790 1590 - 2260 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Gross Alpha 166 183 66. 8 - 252 Acceptable ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Gross Beta 91 99.4 49.7 - 137 Acceptable Page I 53

APPENDIX D 2018 AREOR Report

, PT Qua~er/ Closing I . Sample 'Reported Assigned Acceptance .. . P.erformance Units . .Analyte

• Value Value .

Provider Year Received .. Nu\riber Limits Evaluation Datl!.

ERA 4th/2018 11/20/18 MRAD-29 Water pCi/L Tritium 3030 3020 2280 - 3680 Acceptable EZA 4th/2018 01/23/19 E12346 Cartridge pCi lodine-131 8.92E+01 8.98E+01 0.99 Acceptable EZA 4th/2018 01/23/19 E12347 Milk pCi/L Strontium-89 8.67E+01 9. 19E+01 0.94 Acceptable EZA 4th/2018 01/23/19 E12347 Milk pCi/L Strontium-90 1.07E+01 1.33E+01 0.80 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L lodine-131 9.58E+01 9.33E+01 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cerium-141 1.37E+02 1.33E+02 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Chromium-51 2.66E+02 2.98E+02 0.89 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cesium-134 1.52E+02 1.71E+02 0.89 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cesium-137 1.25E+02 1.21E+02 1.03 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cobalt-58 1.19E+02 1.19E+02 1.00 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Manganese-54 1.70E+02 1.54E+02 1.10 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L lron-59 1.25E+02 1.14E+02 1.09 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Zinc-65 2.75E+02 2.64E+02 1.04 Acceptable EZA 4th/2018 01/23/19 E12348 Milk pCi/L Cobalt-60 2.12E+02 2.12E+02 1.00 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L lodine-131 8.19E+01 8.04E+01 1.02 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cerium-141 1.26E+02 1.24E+02 1.02 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Chromium-51 3.20E+02 2.78E+02 1.15 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cesium-134 1.41 E+02 1.60E+02 0.88 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cesium-137 1.21E+02 1.13E+02 1.07 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cobalt-58 1.09E+02 1.11E+02 0.99 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Manganese-54 1.51E+02 1.44E+02 1.05 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L lron-59 1.16E+02 1.07E+02 1.09 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Zinc-65 2.76E+02 2.46E+02 1.12 Acceptable EZA 4th/2018 01/23/19 E12349 Water pCi/L Cobalt-60 2.06E+02 1.98E+02 1.04 Acceptable MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Americium-241 55.4 55.5 38.9-72.2 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Cesium-134 693.00 781 547-1015 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Cesium-137 598 572 400-744 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Cobalt-57 1080 958 671-1245 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Cobalt-60 595.000 608 426-790 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg lron-55 434 512 358-666 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Manganese-54 0.24 False Pas Test Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Nickel-63 793 765 536-995 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Plutonium-238 55.2 57.0 39.9-74.1 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Pu-239/240 -0.33 0.34 Sens. Eval Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Potassium-40 556 566 396-736 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Strontium-90 162 193 135-251 Acceptable MaS~9 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Technetium-99 239 252 176-328 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg U-234/233 113 160 112-208 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Uranium-238. 224 276 193-359 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Soil Bq/Kg Zinc-65 537.0 500 350-650 Acceptable MaS39 MAPEP MAPEP 4th/2018 12/03/18 Water Bq/L Americium-241 0.007 False Pas Test Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Bq/L Cesium-134 7.94 8.7 6.1-11.3 Acceptable MaW39 Page 154

APPENDIX D 2018 AREOR Report

, RT Quarter/

• Closing/ ~~: ,samP1e*~ .~-~.sami,1,~,.J ,Analyte Repc;>rted . Assigned'. 1 Acceptance *,Performan*ce Units

.,Provider Y!!ar,. Received *.;'.NuQ'lb~r ,.*

• IVl!!dia* * . Value ', , Vlllue : * * 'Limits . * '., Evaluation Date MAPEP 6,9 4.8-9.0 MAPEP 4th/2018 12/03/18 Water Sq/L Cesium-137 7.41 Acceptable MaW39 MAPEP-18° MAPEP 4th/2018 12/03/18 Water Sq/L Cobalt-57 15.1 14.9 10.4-19.4 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Cobalt-60 0.0408 False Pas Test Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Hydrogen-3 331 338 237-439 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L lron-55 8.41 9.0 6.3-11:7 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Manganese-54 13.2 12.5 8.8-16,3 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Nickel-63 6.14 7.0 4.9-9.1 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Plutonium-238 0.591 0.67 0.472-0.876 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Pu-239/240 0.801 0.928 0.650-1.206 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Potassium-40 0,884 False Pas Test Acceptable MaW39 MAPEP 0.309-0.575 MAPEP 4th/2018 12/03/18 Water Sq/L Radium-226 0.566 0.44 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Strontium-90 8.24 9.41 6.59-12.23 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Technetium-99 3.87 3.39 2.73-4.41 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Uranium- 234/233 2.13 2.11 1.48-2.74 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Uranium-238 2.170 2.180 1.53-2.83 Acceptable MaW39 MAPEP MAPEP 4th/2018 12/03/18 Water Sq/L Zinc-65 8.52 7.53 5.27-9.79 Acceptable MaW39 MAPEP 0.0650 -

MAPEP 4th/2018 12/03/18 Filter ug/sample Uranium-235 0,0936 0:0913 Acceptable RdF38 0.1208 MAPEP 4th/2018 12/03/18 MAPEP Filter ug/sample Uranium-238 13.4 12.7 8.9 - 16.5 Acceptable RdF38 MAPEP 4th/2018 12/03/18 MAPEP Filter ug/sample Uranium-Total 13.5 12.8 9.0 -16.6 Acceptable RdF38 MAPEP Filter 0.0639 -

MAPEP 4th/2018 12/03/18 Sq/sample Americium-241 0.0919 0.0913 Acceptable RdF38 0.1187 MAPEP MAPEP 4th/2018 12/03/18 Filter Sq/sample Cesium-134 0.431 0.444 0.311 - 0.577 Acceptable RdF38 MAPEP MAPEP 4th/2018 12/03/18 Filter Sq/sample Cesium-137 0.338 0.345 0.242 - 0.449 Acceptable RdF38 MAPEP 4th/2018 12/03/18 MAPEP Filter Sq/sample Cobalt-57 0.598 0.592 0.414 - 0.770 Acceptable RdF38 MAPEP 4th/2018 12/03/18 MAPEP Filter Sq/sample Cobalt-60 0.338 0.294 0.206 - 0.382 Acceptable RdF38 MAPEP 4th/2018 12/03/18 MAPEP Filter Sq/sample Manganese-54 0.326 0.266 0.186 - 0,346 Acceptable RdF38 MAPEP Filter Sens.

MAPEP 4th/2018 12/03/18 Sq/sample Plutonium-238 0.000398 0,0011 Acceptable RdF38 Evaluation MAPEP Filter 0.0489 -

MAPEP 4th/2018 12/03/18 Sq/sample Pu-239/240 0,0672 0,0698 Acceptable RdF38 0.0907 MAPEP 4th/2018 12/03/18 MAPEP Filter Sq/sample Strontium-90 -0.026 False Pas Test Acceptable RdF38 MAPEP 4th/2018 12/03/18 MAPEP Filter Sq/sample Uranium- 234/233 0.148 0.152 0.106-0.198 Acceptable RdF38 \

MAPEP 4th/2018 12/03/18 MAPEP Filter Sq/sample Uranium-238 0.150 0.158 0.111 - 0.205 Acceptable RdF38 MAPEP Sens.

MAPEP 4th/2018 12/03/18 Filter Sq/sample Zinc-65 0.229 0.201 Acceptable RdF38 Evaluation MAPEP MAPEP 4th/2018 12/03/18 Veg. Sq/sample Americium-241 0.0851 0,0930 0.065-0.121 Acceptable RdV38 '

MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Sq/sample Cesium-134 1.74 1.94 1.36-2,52 ( Acceptable MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Sq/sample Cesium-137 2.42 2.36 1.65-3.07 Acceptable Page j 55

APPENDIX D 2018 AREOR Report -* ~. **::""

PT.\,:t.

• Provider,.

Quarter I

• Year* --~~~!1~l~* :f~~~~f'

• s~:J:l~ 1' 1

Uni~'

R~ported

. -'.Value Assigned ' .Acceptance

' Value* * : ' Limits *

'~erfor.marice .

• .Evaluation i;>ate .:**, ...... ',* ,.*., -'*

MAPEP MAPEP 4th/2018 12/03/18 Veg. Bq/sample Cobalt-57 3.24 3.31 2.32-4.30 Acceptable RdV38 MAPEP MAPEP 4th/2018 12/03/18 Veg. Bq/sample Cobalt-60 1.69 1.68 1.18-2.18 Acceptable RdV38 MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Bq/sample Manganese-54 2.59 2.53 1.77-3.29 Acceptable MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Bq/sample Plutonium-238 0.0680 0.070 0.049-0.091 Acceptable

• MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Bq/sample Pu-239/240 0.0605 0.0620 0.043-0.081 Acceptable MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Bq/sample Strontium-90 0.718 0.791 0.554-1.028 Acceptable MAPEP MAPEP 4th/2018 12/03/18 RdV38* Veg. Bq/sample Uranium- 234/233 0.136 0.138 0.097-0.179 Acceptable MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Bq/sample Uranium-238 0.140 0.143 0.100-0.186 Acceptable MAPEP MAPEP 4th/2018 12/03/18 RdV38 Veg. Bq/sample Zinc-65 1.51 1.37 0.96-1.78 Acceptable MAPEP 4th/2018 12/03/18 MAPEP Alk. Water Bq/L lodine-129 1.63 1.62 1.13-2.11 Acceptable XaW39 Page I 56

APPENDIX D 2018 AREOR APPENDIX D~ COMPARISON OF OPERATIONAL TO PREOPERATIONAL DATA Page I 57

APPENDIX D 2018 AREOR Comparison of Operational to Preoperational Data and Analysis of Trends Unit 1 achieved criticality on June 14, 1967 and was permanently retired from service on November 30, 1992. Unit 2 attained initial criticality on July 26, 1982 and Unit 3 on August 29, 1983.

A variety of environmental samples were analyzed and the analytical results (January 1, 1979 to July 31, 1982) were compared with the 2018 operational data obtained for SONGS Units 2/3.

The following media were evaluated and compared with the operational data of SONGS Units 1, 2 and 3:

• External Radiation

• Air Particulates

• Radioiodine

• Ocean Water

• Shoreline Sediment (Sand)

• Ocean Bottom Sediments

• Marine Species 0 Local Crops

• Soil

• Kelp

• Drinking Water The measurements obtained from the SONGS Unit 1 operational Radiological Environmental Monitoring Program (REMP) during the period from January 1979 to July 1982 are used as the preoperational baseline for SONGS Units 2/3. This is in accordance with San Onofre Units 2/3, Environmental Report, Operating License Stage, Appendix 6A, Pre-operational Radiological Environmental Monitoring, May 31, 1978. Comparisons of preoperational data to 2018 operational data are possible for each of the following exposure pathways: (1) direct radiation, (2) air particulates (inhalation), and (3) ocean water (marine pathway for ingestion).

Comparisons can also be made between preoperational and operational data for ocean bottom sediment data to ascertain if there has been any significant increase in radioactivity in ocean bottom sediments near the SONGS Units 2/3 outfalls.

Currently the preoperational data are higher than the operational data. The decrease in radioactivity is due primarily to the cessation of atmospheric nuclear weapons testing and to the decay of fallout radionuclides. There is a close correlation between indicator and control data over several decades. There are no indications of adverse effects from SONGS on the environment.

Page I 58

• APPENDIX D 2018 AREOR Direct Radiation The direct radiation measurements for the SONGS REMP were made by TLDs on a quarterly collection cycle at 38 indicator locations and 11 control locations in 2018. (See Appendix I for ISFSI TLD data). The TLDs were located at inner and outer ring locations as specified by the ODCM. During the preoperational period from January 1979 to July 31, 1982, the indicator stations ranged from 16.1 to 46.6 mR. The preoperational indicator average was 25.3 mR. The preoperational control range was 19.3 to 30.1 and the control mean was 23.1 mR. During the 2018 operational year for Units 2/3, the SONGS REMP TLD data was processed in accordance with ANSI/HPS 13.37-2014. Refer to Appendix B for a detailed discussion of the REMP TLD data ..

Factors such as meteorology, local geology, the fallout from atmospheric nuclear weapons testing, and seasonal fluctuations account for the variability in the data as observed during the preoperational period for each location. The decrease in radiation levels at all TLD sample locations is attributable to the curtailment of the atmospheric nuclear weapons testing, and the continued decay of the manmade background from fallout from past nuclear weapons tests.

Simultaneous variation in the radiation levels at both the control and indicator locations shows that the variations are due to factors external to SONGS. Outside the EAB there were no measurable levels of increased direct radiation associated with SONGS as measured by TLDs.

I Airborne Particulates From January 1979 through December 2018 (considered to be the preoperational period for SONGS Units 2/3), there was a noticeably higher gross beta activity in air at all sample locations. This period extends from the fourth quarter of 1980 through the fourth quarter of 1981. These higher activity levels were attributable to the Chinese atmospheric nuclear weapons test conducted on October 15, 1980.

Page I 59

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- HB Coltrol - OsideConillll ~ SLR Corirol -.- Sanaemente - StateBeachPai1< Bluff Figure 11 - Monthly Average Airborne Particulate Gross Beta Preoperational and Operational Data for Units 2 and 3, (1976 - 2018)

For 2018, the maximum monthly average airborne particulate gross beta result was approximately 0.036 pCi/m 3 . This result is in line with both recent history and SONGS preoperational data.

Radioiodine Most of the preoperational data for 1-131 level was below the detection limit. All the 2018 operational 1-131 data were below the detection limit. This is expected, as the shutdown and defueled SONGS is no longer producing 1-131 , and all previously produced 1-131 has decayed away. SONGS had no effect on the environment as measured by the radioiodine cartridge data in 2018.

Ocean Water Monthly ocean water samples were collected near each of the Station discharge outfalls, and from the Newport Beach control location . The ocean water samples are analyzed for naturally-occurring and station-related gamma-emitting radionuclides . Samples were composited quarterly and analyzed for tritium .

Page 160

APPENDIX D 2018AREOR During the preoperational period, naturally occurring potassium-40 was detected in each of the samples collected from both indicator and control locations. Other gamma-emitting radionuclides were detected in only one ocean water sample. In May 1980, Co-58, Co-60, Cs-134, and Cs-137 were detected in an ocean water sample collected from the SONGS Unit 1 outfall. Concentrations of the radionuclides in this sample were 11, 6, 380, and 430 pCi/1 respectively. Tritium was also detected in two of the ocean water samples collected in May 1980 from the SONGS Unit 2 outfall and in and from the Newport Beach control location.

The data for all plant related radionuclides at all ocean water locations during the 2018 operational period were not detected. SONGS had no impact on the environment as measured 1

by this exposure pathway in 2018.

Drinking Water Due to its location on the beach, there is no drinking water pathway for SONGS. Nonetheless, drinking water samples from Oceanside and Camp Pendleton were collected and analyzed. No plant related radionuclides were detected during the 2018 operational period. Gross beta activity (from natural radionuclides) was detected during both the operational and preoperational periods at both the indicator and the control locations. No plant related radionuclides (including

• tritium) have been identified in 2018, and no trends have been noted. SONGS had no impact on the environment as measured by this exposure pathway.

Shoreline Sediments (Sand)

Beach sand is collected semiannually from three indicator locations and from a control location situated at Newport Beach. The samples are analyzed for naturally occurring and plant-related radionuclides.

To assess the impact of SONGS operations on this environmental medium, preoperational data were compared to 2018 operational data. The radionuclide detected in shoreline sediment in the preoperational time frame was Cs-137 with a range of 0.012 to 0.022 pCi/g, averaging 0.019 in 5 sediment samples. One control sample with a Cs-137 activity of 0.032 pCi/g was observed in July 1979. The presence of Cs-137 in both control and indicator locations during the preoperational period leads to the conclusion that the root cause is external to SONGS and is most likely attributable to atmospheric nuclear weapons testing. No SONGS-related radionuclides were detected in shoreline sediment during the 2018 operational period. SONGS had no impact on the environment as measured by this exposure pathway in 2018.

Table 31 - Shoreline Sediment Concentration Cs-137 PreOp 0.012 - 0.022 0.019 < LLD - 0.032 < LLD Operational < LLD < LLD < LLD < LLD All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational c < LLD < LLD < LLD < LLD NOTES:

a. Preoperatiorial period is January 1979 - July 1982. Operational period is January 2018 - December 2018

b. LLD for operational data are listed in Appendix B

c. During 2018, all station related radionuclides from all sample locations were< LLD Page I 61

APPENDIX D 2018AREOR Ocean Bottom Sediments During the preoperational and operational periods, representative samples of ocean bottom sediments were collected semiannually from each of the Station discharge outfalls and from a control station in Laguna Beach. The samples were analyzed for naturally' occurring and SONGS related radionuclides.

During the preoperational period. Manganese-54 (Mn-54) was detected in 5 of the 28 samples.

The concentrations of Mn-54 in these samples ranged from 0.015 to 0.49 pCi/g, averaging 0.13 pCi/g. Cobalt-58 (Co-58) was detected in nine samples. The concentration of Co-58 in the samples ranged from 0.013 to 1.16 pCi/g, averaging 0.20 pCi/g. Cobalt-60 (Co-60) was measured in 15 of the 28 samples. The concentration of Co-60 in the sample ranged from 0.014 to 8.1 pCi/g, averaging 0.79 pCi/g. Cs-137 was also detected in 16 of the 28 samples.

The concentrations of Cs-137 in the samples ranged from 0.014 to 0.090 pCi/g, averaging 0.039 pCi/g. Cerium-144 (Ce-144) was found in two samples. The concentration of Ce-144 in the preoperational period samples was 0.06 and 0.26 pCi/g, respectively.

Results of the 2018 data indicate that there has not been a build-up of radionuclides with time in ocean bottom sediments near SONGS. The results also indicate notable decrease in the concentrations of plant-related radionuclides in the ocean bottom sediment. Although Co-58, Co-60, and Cs-137 are normally associated with nuclear power operations, preoperational study reveals no accumulation trend for these radionuclides, and no increase in levels for these radionuclides was detected during the operational period.

The concentration of station-related radioriuclides in all ocean bottom sediment samples analyzed in 2018 was below the MDC, supporting the conclusion of no detectable impact on ocean bottom sediments from SONGS. SONGS had no impact on the environment as measured by this exposure pathway in 2018.

Page 162

APPENDIX D 2018 AREOR Table 32 - Ocean Bottom Sediment Concentration Mn-54 PreOp 0.015 - 0.49 0.129 < LLD < LLD Operational < LLD < LLD < LLD < LLD Co-58 PreOp 0.013 -1.160 0.199 < LLD < LLD Operational < LLD < LLD < LLD < LLD Co-60 PreOp 0.014 - 8.100 0.788 < LLD < LLD Operational < LLD < LLD < LLD < LLD Ag-110m PreOp < LLD - 0.020 < LLD < LLD < LLD Operational < LLD < LLD < LLD < LLD Cs-137 PreOp 0.014 - 0.090 0.039 < LLD < LLD Operational < LLD < LLD < LLD < LLD Ce-144 PreOp 0.060 - 0.260 0.160 < LLD < LLD Operational < LLD < LLD < LLD < LLD All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational c < LLD < LLD < LLD < LLD NOTES:

a Preoperational period is January 1979 - July 1982. Operational period is January 2018 - December 2018 b LLD for operational data are listed in Appendix B C During 2018, all station related radionuclides from all sample locations were < LLD Marine Species (Flesh)

Non-migratory marine species are collected semi-annually near SONGS. Non-migratory marine animals are collected near the SONGS outfalls and from Laguna Beach and analyzed for gamma-emitting radionuclides as specified in the ODCM. The results are subsequently reported as pCi/g, wet weight.

Results for several marine species for both the preoperational and 2018 operational periods for Units 2/3 are summarized in Table 33. The marine species used for purposes of comparison include: Sheephead (a fish), Blacksmith (a fish), Black Perch (a fish), Bay Mussel (a mollusk),

and Spiny Lobster (a crustacean). Radionuclides analyzed, but not included in Table 33, were below the lower limits of detection for both the preoperational and operational periods.

During the 2018 operational period, no SONGS related radionuclides were detected above the MDC. The data indicate no accumulation trends. SONGS had no impact on the environment as measured by this exposure pathway in 2018.

Page 163.

i l

APPENDIX D 2018AREOR Table 33 - Marine Species Concentration Co-58 PreOp 0.016 - 0.030 0.023 < LLD < LLD Operational < LLD < LLD < LLD < LLD Co-60 PreOp 0.005 - 0.044 0.017 < LLD < LLD Operational < LLD < LLD < LLD < LLD Ag-110m PreOp < LLD - 0.004 < LLD < LLD < LLD Operational < LLD < LLD < LLD < LLD Cs-137 PreOp 0.004 - 0.018 0.007 0.005 - 0.012 0.007 Operational < LLD < LLD < LLD < LLD All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational < LLD < LLD < LLD < LLD Co-58 PreOp 0.009-0.011 0.010 < LLD < LLD Operational < LLD < LLD < LLD < LLD Co-60 PreOp 0.004-0.045 0.017 < LLD < LLD Operational < LLD < LLD < LLD < LLD Ag-110m PreOp 0.002-0.009 0.006 < LLD < LLD Operational < LLD < LLD < LLD < LLD Cs-137 PreOp 0.003-0.015 0.008 0.004-0.014 0.009 Operational < LLD < LLD < LLD < LLD All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational < LLD < LLD < LLD < LLD sJ\#/lf' )W.f:' 'Y\,fj10/:if'"1t"°W~ ,1'$1, :f.f\< fl'# t>>;:J{;:J<,) ~:

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Mn-54 PreOp 0.009 - 0.025 0.017 < LLD < LLD Operational < LLD < LLD < LLD < LLD Co-58 PreOp 0.008 - 0.080 0.028 Operational < LLD < LLD < LLD < LLD Co-60 PreOp 0.005 - 0.400 0.077 < LLD < LLD Operational < LLD < LLD < LLD < LLD Cs-137 PreOp 0.003 - 0.006 0.004 < LLD < LLD Operational < LLD < LLD < LLD < LLD Ru-103 PreOp < LLD - 0.045 < LLD < LLD < LLD Operational < LLD < LLD < LLD < LLD All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational < LLD < LLD < LLD < LLD Page 164

APPENDIX D 2018 AREOR Co-58 PreOp 0.007 - 0.270 0.086 < LLD < LLD Operational < LLD < LLD < LLD < LLD Co-60 PreOp 0.014 - 0.210 0.060 < LLD < LLD Operational < LLD < LLD < LLD < LLD Cs-137 PreOp 0.005 - 0.011 0.008 0.040 - 0.015 0.008 Operational < LLD < LLD < LLD < LLD All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational < LLD < LLD -< LLD < LLD NOTES:

a Preoperational period is January 1979-July 1982. Operational period is January 2018 - December 2018 b LLD for operational data are listed in Appendix B c During 2018, all station related radionuclides from all sample locations were < LLD d Samples collected in 2018 include crustaceae, mollusks, and two adult species of fish.

LqcalCrops In the preoperational period of January 1979 through July 1982, Sr-90 was detected in the control samples of kale, parsley, and squash .. Naturally occurring K-40 was detected in cucumber, kale, and tomato samples from the indicator and control locations. Ce-144 and Zr-95 were detected in one sample of parsley at the control location at concentrations of 0.12 and 0.09 pCi/g, wet weight respectively.

Owing 2018, only natural radionuclides were identified in local crops, at both the indicator and control locations. SONGS had no impact on the environment as measured by this exposure pathway in 2018.

Soil A comparison of operational and preoperational data does not reveal any accumulation pattern of SONGS related isotopes in soil. The intermittent detection of Cs-137 in both indicator and control locations is due to residual fallout from atmospheric nuclear weapons testing. SONGS had no impact on the environment as measured by this exposure pathway in 2018.

Table 34 - Soil Concentration Sr-90 PreOp 0.02 - 0.08 0.044 < LLD - 0.03 < LLD Operational N/A N/A N/A N/A Cs-137 PreOp 0.02 - 0.20 0.096 < LLD - 0.06 < 0.10 Operational < LLD-0.10 0.10 0.99 0.099 All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational < LLD < LLD < LLD < LLD Page I 65

APPENDIX D 2018 AREOR Kelp Kelp is collected semiannually from three indicator locations and from a control location situated at Salt Creek. The samples are analyzed by gamma-spectral analysis for naturally-occurring and SONGS-related radionuclides.

To assess the impact of SONGS operations on kelp, preoperational data were compareq to 2018 operational data in Table 35. Radionuclides detected during the preoperational period for SONGS include Mn-54, Co-60, Zr-95, 1-131, and Cs-137.

During the 2018 operational period, 1-131 was detected in two indicator and one control samples. No other station related isotopes were detected in kelp samples during the 2018 operational period. Figure 9 shows a close correlation between indicator and control sample locations over an extended period of time.

Although 1-131 activity has been detected in kelp since 1977, there is no evidence that the concentrations of 1-131 are a result of operations at SONGS. The presence of 1-131 in kelp is due to the sewer release of medical administrations of radioisotopes, since it has been detected consistently in control .as well as indicator locations. Since 1988, the concentration of 1-131,

. when detected, has typically been highest at the control locations.

Table 35 - Kelp Concentration

.Average

. ;;:fgGi/~,b~..,.,

Mn-54 Pre Op < LLD - 0.005 < LLD < LLD < LLD Operational < LLD <LLD < LLD < LLD Co-60 PreOp 0.006 - 0.009 0.008 < LLD < LLD Operational < LLD < LLD < LLD < LLD Zr(Nb)-95 PreOp 0.014 - 0.090 0.046 0.018 - 0.053 0.036 Operational < LLD < LLD < LLD < LLD 1-131 PreOp 0.006 - 0.024 0.013 0.008 - 0.030 0.014 Operational < LLD-0.104 0.077 0.018 0.018 Cs-137 PreOp 0.004 - 0.071 0.027 < LLD < LLD Operational < LLD < LLD < LLD < LLD All other SONGS PreOp < LLD < LLD < LLD < LLD radionuclides Operational < LLD < LLD < LLD < LLD The 1-131 results in 2018 are higher than found during the preoperational program. However, all of the positive results were from the April 2018 sampling and were found in both indicator and control sample locations. No 1-131 was detected during the October 2018 sampling. Since there is no longer a viable production mechanism for 1-131 at SONGS, it is reasonable to conclude that the detection of 1-131 in kelp is due to factors external to SONGS. SONGS had no impact on the environment as measured by this exposure pathway in 2018.

Page I 66

APPENDIX E 2018 AREOR DEVIATIONS FROM Q.DCM SAMPLING REQUIREMENTS IN 2018 Page 167

APPENDIX E 2018 AREOR DEVIATIONS -

FROM --

ODCM SAMPLING REQUIREMENTS Deviations from the ODCM sampling requirements are identified below in accordance with section 5.0 of the ODCM. During 2018, the ODCM specified a priori LLD was achieved for all REMP samples. Deviations from the ODCM were associated with external factors notwithin the control of REMP personnel such as limited availability of marine samples at the locations specified in the ODCM, external power outages, and other unavoidable deviations. The 2018 ODCM deviations had no meaningful impact on the REMP data and does not compromise the validity of the reported conclusions.

Direct Radiation Thermoluminescent Dosimeters (TLDs)

1. TLD # 15 was moved off station during a portion of the second quarter 2018 exposure collection period because planned adjacent construction activity was likely to damage the TLD package. The TLD data was calculated using the known exposure rates off station, the known time off station, the known time on station, and the measured total gamma exposure to the TLD # 15 package during the second quarter of 2018. Thus, direct radiation data was available for TLD # 15 based on empirical measurements during the second quarter of 2018.

2. TLD # 22 (former USCG Station San Mateo) was removed from its station by unknown external action (possible vandalism) sometime during the second quarter of 2018. Thus, no empirical TLD # 22 data exists to report for this location during the second quarter 2018.

Air Sampling At SONGS, there are a total of 7 Indicator and 1 Control Air Samplers.

Downtime for each air sampler in 2018 was due to weekly sample collection, quarterly calibrator flow comparison checks, scheduled air sampler motor assembly/ calibrator change-outs, and preventative air sampler motor assembly change-outs which was conducted if a motor assembly was observed to show signs of degraded performance (excessive bearing noise, vane erosion, flow decline, etc.). During 2018, there were no avoidable deviations from the ODCM. The unavoidable ODCM deviations (routine planned air sampler maintenance and one unplanned externai power outage) constituted less than 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> per air sampler during 2018.

Routine unavoidable air sampler down time (per sampler) includes the following:

Weekly sample collection events: 0.5 minutes (approx.) x 52 = 26 minutes Quarterly calibrator comparison check: 5 minutes (approx.) x 4 = 20 minutes Other air sampler maintenance: 10 minutes (approx.)

Downtimes in excess of 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> are addressed below for each ODCM required air sample.

1) Air Sampler #1 (San Clemente City Hall) exp_erienced approximately 1.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of down time during the sample collection period ending 3/13/2018. This was attributable to an external power outage.

Note: Christmas fell on the normal REMP air sample collection day (Tuesday) in 2018. The.

REMP air sampling was completed the next day. This resulted iri an eight-day collection period followed by a six-day collection period in 2019. No downtime resulted. The acceptable time frame for surveillances described in Section 6 of the ODCM is the surveillance interval + 25% of the surveillance periodicity. This action did not result in a deviation from the ODCM.

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APPENDIX E 2018 AREOR Note: Air samples collected on 9/11/2018 could not be shipped until 9/12/2018 due to the impact of Hurricane Florence on shipping. This did not result in a deviation from the ODCM or procedures.

Ocean Water Sampling No deviations were observed Drinking Water No deviations were observed Shoreline Sediments No deviations were observed Ocean Bottom Sediments No deviations were observed Marine Species (Flesh)

No deviations were observed Local Crops No deviations were observed Soil No deviations were observed Kelp Kelp samples are not required by Section 5.1 of the ODCM. Normally, four kelp beds are collected twice a year for a total of eight kelp samples. Four samples were collected in April 2018. In October 2018, only two kelp beds had sufficient canopy to provide a sample. There were a total of six kelp samples in 2018 instead of the normal eight samples. This did not constitute a deviation from the ODCM.

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APPENDIX F 2018AREOR APPENDIX F. LAND USE CENSUS Page 170

APPENDIX F 2018 AREOR Introduction The regulatory basis for conducting a Land Use Census (LUC) is identified in 10CFRSO, Appendix I,Section IV.8.3. The site specific regulatory position (NUREG 0490 sec. 2.4.4) describes atmospheric dispersion and assumes a ground plane release. Therefore, the purpose of the LUC is to "identify the location of the nearest garden of greater than 500 square feet producing leafy vegetables, the nearest milk animals, and the nearest residence in each of the 16 meteorological sectors within a distance of five miles from SONGS Units 2 and 3." Using the procedurally described criteria will always identify the critical receptor in each sector for a ground plane release. This meets the NUREG 0490 requirement for a surveillance program "to identify changes in the use of unrestricted areas and to permit modifications in monitoring program for evaluating doses to individuals from principle pathways of exposure." In addition, Regulatory Guide 4.15, Rev. 1, section C3 address that "written procedures should be prepared, reviewed, and approved for activities involved in carrying out the monitoring program." The 2018 LUC was conducted to comply with the surveillance requirement as defined in the Offsite Dose

. Calculation Manual (ODCM) Section 5.2. The current Radiological Environmental Monitoring Program Procedure SDS-CH2-PCD-1012, Land Use Census, establishes the method of documenting and verifying Land Use Census results in compliance with the ODCM.

Executive Summary The land area around SONGS is not subject to significant change due to tlie nature of the land uses. The area around SONGS is divided into sixteen (16) geographical sectors. The Pacific Ocean and the SONGS seawall beach walkway (open to unrestricted use by members of the general public) comprise six sectors. The United States Marine Corps (USMC) Base Camp Pendleton and the San Onofre State Beach Campground comprise 7 of the 16 sectors surrounding SONGS.* The City of San Clemente (a mature municipal area) and coastline comprise the remaining three sectors. Therefore, the characteristics of the local land area substantially inhibit significant land use changes.

Definition of Uses Residence is defined as any structure (single-family house, apartment, mobile home, barracks

. or similar unit) that is occupied by an individual(s) or resident(s) for three months or longer in a given year.

Other Specified Use is defined as a location occupied by members of the general population as other than their primary residence. The use is divided into two categories: employment and non-employment related.

• Employment use is defined as a location occupied by members of the general population engaged in normal work activities regardless of the length of time spent at the location, and regardless of its permanence, including concession stands, restaurants, campground hosts, markets and guard shacks.

Non-employment-related use is defined as a location occupied by members of the general population who are not engaged in normal work activities, including campgrounds, temporary housing, time-share condominiums, motels, hotels, schools and beaches.

• Milk animals are cows, goats, and sheep whose milk is used in dairy products for human consumption.

Meat animals include, but are not limited to, deer, cattle, goats and sheep whose meat is used for human consumption.

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APPENDIX F 2018AREOR Fresh, leafy vegetables include, but are not limited to, lettuce, cabbage and spinach.

Fleshy vegetables include, but are not limited to, tomatoes, cucumbers, cauliflower and sweet corn.

The Land Use Census Scope The land area around SONGS includes both Orange and San Diego counties. The Orange County portion includes a portion of the city of San Clemente (official population as of July 2017 is 65,267 per the US Census statistical information website) and the San Clemente State Park.

The San Diego County portion includes much of the (USMC) Base Camp Pendleton, San Onofre State Beach Park, the SONGS seawall beach walkway, and SONGS itself.

The LUC map is divided into 16 geographical sectors: A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q and R. The ODCM surveillance requirement is performed by identifying the location of the nearest garden greater than 500 square feet, nearest milk animals, nearest residence, and other identified land uses in each of the sixteen (16) geographical sectors within a distance of five (5) miles from San Onofre Units 2 and 3. In addition, the Land Use Census aids in detecting changes in the presence of hazardous manufacturing and handling facilities within_ the five (5) mile radius. The methodology consists of reviewing data from the previous LUC reports and verifying if any information has changed. The LUC is conducted and updated at least once per 12 months between the dates of June 1st and October 1st. Other Specified Use locations, such as fire stations, surf camps, and other poteQtial pathways of exposure to an individual, may be identified if these locations are closer to SONGS than the closest full time residence for all .

age groups. An Other Specified Use location is not identified if a higher occupancy Other Specified Use location in that sector is closer to SONGS.

Sectors A, B, C, D, E, and F include land within the boundaries of (USMC) Base Camp Pendleton. The study area in sector G includes the area along the coast south of SONGS.

Sectors H, J, K, L, M, and N include the beach seawall walkway which m_ay be open to the general public for non-employment usage. The non-employment use observed on this walkway is the recreational pedestrian transit between_ the bea_ches north and south of SONGS. Sectors P, Q, and R include a section of San Clemente, the San Onofre State Park, and part of Camp Pendleton.

Research Methodology Completion of the 2018 SONGS Land Use Census required field research and communication with agencies, organizations, and individuals. The Radiological Effluent and Environmental Program (REMP) Specialist reviewed and verified the 2017 LUC and associated documentation.

If changes occurred, then changes were reflected in the 2018 land use census. Information gathered by communication with the cognizant point of contact for the appropriate agency, organization, or military base. The following agencies and organizations were contacted.

lnf,ermation was also researched through the agency websites.

• California Highway Patrol

• State of California Department of Parks and Recreation, including San Onofre State Beach

• Orange County Agricultural Commissioner

• United States Bord.er Patrol

• US Census Bureau

• Endless Summer Surf Camp

• San Onofre Recreation Beach (SORB) management

• Marine Corps Base Camp Pendleton (CPEN), Community Plans and Liaison office Page 172

APPENDIX F 2018AREOR I

As per the LUC procedure, if the existence of a garden greater than 500 square feet at a candidate location could not be determined from the street, then a garden greater than 500 square feet was presumed to exist at that location. Department of Homeland Security (Border Patrol) management personnel provided occupancy data for the Border Patrol check point.

Communicat.ion provided by the points of contact from Camp Pendleton and State Parks was considered to be conclusive. Agency contact and documentation were completed in compliance with the Land Use Census procedure.

Field Research During and after' the ~ompletion of the preliminary research, field research was undertaken to confirm initial findings and obtain further information necessary to complete the Land Use Census. Field research was initiated in August 2018 and completed in October 2018.

Data and Methodology Summary The closest candidate residence, garden, dairy within five miles of SONGS was identified for each* of the 16 sectors. If there were Other Specified Uses (including both employment and non-employment related locations) closer than the closest residence, then these locations were also noted in the appropriate LUC map. The appropriate individual or organization was identified for each existing and new LUC location. The individual or organization was contacted to determine the use and occupancy for that location. For each LUC location, the appropriate individual was asked to provide an estimate of annual occupancy based on personal knowledge of the location. The information gathered is summarized in Table 1.

Objective Evidence File Throughout the study, records of contacts, phone notes, meeting minutes, emails, and field survey notes were maintained in accordance with the Land Use Census Procedure, SDS-CH2-PCD-1012. A documentation portfolio was prepared and retained in the plant retrievable record system.

2018 Land Use Census Observations and Changes The following observations and changes were noted:

• The closest garden (greater than 500 square feet) in each sector was identified.

• In Sector P the closest garden is located at 4130 Calle Isabella (LUC# G-3).

• In Sector Q the closest garden is located at 130 Calle Pacifica (LUC # G-15).

• In Sector R the closest garden is located at 786 Avenida Salvador (LUC# G-19).

• The SONGS garden is also located in Sector R (LUC# G-10). However, the SONGS garden is a source of leafy and fleshy samples to satisfy the REMP local crop sampling requirement. The SONGS garden is not used for human consumption and is 0. 7 miles from SONGS. In the 2017 LUC, the SONGS garden was reported to be 0.4 miles from SONGS in Sector R.

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APPENDIX F 2018AREOR

• LUC # R-P3 and R-QS are San Onofre Recreational Beach (SORB) camping areas that are closest to SONGS in sector P and sector Q respectively. In 2014, the SORB discontinued the campground host program. R-P3 (the campground host location) is no longer a Full Time Residence (FTR). The SORB employee who lived in location R-QS has retired and R-QS is no longer an FTR. The current SORB policy is to allow only eligible persons to camp at the SORB for no more than ninety (90) days per year. No one is allowed to live full-time on the SORB property. Thus, R-P3 and R-QS have been changed to residences with a maximum occupancy of 2160 hours0.025 days <br />0.6 hours <br />0.00357 weeks <br />8.2188e-4 months <br /> per year (90 X 24) for all age groups. LUC# R-P3 and R-QS were identified as FTR in the 2017 LUC.

• The occupancy for the Border Patrol Station changed from 2400 to 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> per year based on information from the on-site management. The California Highway Patrol weigh station changed from 1960 to 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> based on an interview with the on-site management.

• LUC# R-G1 (San Onofre State Park campground host) occupied spaces 103 to 104 in 2018. The reported location was99-104 in the 2017 LUC. This location is 2.9 miles from SONGS. The distance was reported as 3.0 miles in 2017 LUC.

• Other Specified Use locations were included only if there were no Other Specified Use locations with a higher occupancy closer to SONGS in the same sector. Accordingly, some other Specified Use locations identified in the 2017 LUC are not identified in the 2018 LUC.

• LUC# 028 (YMCA Surf Camp) is not included because LUC # 0-2 (San Onofre Beach Campground) is cl.oser and has a higher occupancy for all ages.

• LUC# R-C1 (Camp San Onofre Barracks) is not included because R-C3 (Camp San Onofre Barracks) is closer to SONGS in sector P.

• LUC# R-P1 (Cotton Point Estates) is not included because LUC# R-P2 (San Mateo Point Housing) is closer.

• LUC # R-Q3 (San Mateo Point Housing) is not included because LUC # R-Q2 (San Onofre Ill Housing) is closer in Sector Q.

• LUC# 3 (Trestles Beach Lookout Tower) is not included because R-P3 (San Onofre Recreational Beach (SORB)) and LUC# 0-6 (Surf Beach (Lifeguard)) are both closer to SONGS and both have a greater occupancy for all ages.

• LUC# 31 B (Hwy Patrol Weigh Station (NB)) is not included because LUC# 31A (Border Patrol Checkpoint (NB)) is closer has the same occupancy.

• Only the closest garden in each sector is identified. Therefore, gardens G-5 (1706 S Ola Vista), G-8 (2240 Ave Salvador), G-14 (4090 Calle Isabella), and G-15 (130 Calle del Pacifica) are not included.

• The occupancy for the Endless Summer Surf Camp changed from 4380 to 2880 hours0.0333 days <br />0.8 hours <br />0.00476 weeks <br />0.0011 months <br /> for adults. LUC # 0-2A

• The Summer Soul Surf Camp moved to the San Clemente State Beach. The new

.location is further from SONGS than the closest residence. Therefore, this location is not included in the 2018 LUC. LUC # 0-20 Chemical and Toxic Waste The presence of manufacturing facilities, chemical plants, and toxic waste sites was determined by field survey. Per direct observation, no chemical of toxic waste facility with the potential to affect SONGS exists within the study area.

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APPENDIX F 2018AREOR Milk Animals No dairies or other facilities producing milk for human consumption were identified in 2018.

Meat Animals No agricultural meat animals were identified during the 2018 LUC. The only known meat animal pathway land uses is recreational hunting. Deer graze year round on Camp Pendleton.

Growing Season for ,fleshy and leafy vegetables Fleshy and leafy vegetables were available approximately eight months during 2018 at the SONGS garden.

Summary of Changes

1. For the period of July 1, 2017 to June 30, 2018, the Camp Pendleton deer hunting take data was updated and is reflected in Table 3. Per the USMC wildlife biologist, the exact location of a particular kill was not known. The reported take area should be interpreted as an estimate of approximate location. Thus, a deer reported taken in hunting area Alpha-2 may actually have been taken in an adjacent hunting area (such as Romeo-3 or Bravo-3). There were no changes to the estimated distances from SONGS to the nearest vegetation potentially consumed by deer from July 1, 2017 through June 30, 2018.

Distances to nearest vegetation typically consumed by deer:

Distance from Units 2/3 Units 2/3 Sector (miles) p 0.3 Q 0.3 R 0.2 A 0.1 B 0.1 C 0.1 D 0.1 E 0.2 F 0.3 G 0.1 Page 175

APPENDIX F 2018 AREOR Table 1 - SONGS 2018 Land Use Census Miles Miles Miles Units 2/3 LUC# Residence from LUC# Gardens from LUC# Other Specified Uses from Sector U2/3 U2/3 U2/3 A R-A1 Camp San Mateo 3.6 FTR 0-8 Camp San Mateo Motor Pool 3.6 2,000 22 SCE land uses 0.4 B

.. 0-9 USMC CP Sanitary Land Fill 2.1 816 C R-C2 Camp San Onofre Fire Station #7 52 Area 2.4 FTR 0-10 Camp San Onofre (STP #11) 2.2 2,000 R-C3 Camp San Onofre Barracks 2.6 FTR

,.f:. ,, , .*,, ..... _,*

D R-D1 Camp San Onofre Barracks 3.0 FTR E R-E1 Camo Horno Barracks 4.1 FTR 0-5 Camp Horno Motor Pool

.. - 4.0 2,500

. :* .. . .v,..

F 0-1 San Onofre State Beach Guard Shack 0.8 1,500 31A Border Patrol Checkpoint (NB) 1.9 2,000

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

San Onofre State Park-Host 1.8 720 G R-G1 2.9 FTR 0-2 San Onofre Beach Campground - all ages sites # 103-104 32 Hwy Patrol Weigh Station (SB) 2.1 2,000 0-2A Endless Summer Surf Camp sites99-101 (see notes) 2.8 2,880

', *,:.; *-::.:,. . *., ,,.:. '..~.,

Sectors H, J, K, L, M, and N have only non-employment related other specified uses (recreational transit via the beach walkway).

These sectors are primarily the Pacific Ocean and contain only a small portion of the plant site, and the beach walkway providing access for state beach park users north & south of SONGS.

p R-P3 San Onofre Rec Beach (SORBl 1 2160 0-6 Surf Beach (Lifeguard) 0.5 800 4130 Calle R-P2 San Mateo Point housing 2.7 FTR G-3 2.8 Isabella

• ._,'. .. : **; . ; . ,i;:, ....

130 Calle del Q R-Q5 SORB Recreational Beach 1.1 2160 G-15 4 0-3 State Park Office Trailer 0.6 2,000 Pacifico R-Q2 San Onofre Ill housina 1.4 FTR 5 Surf Beach Guard Shack 0.7 1,500

• ..*. *..;: . *. -- *~ .-. _.. *:,-. .,* *, .*:.

G-10 SONGS Garden 0.7 1A SORB Campground Check-in 1.3 2,000 R R-R1 San Onofre Ill housing 1.3 FTR G-19 786 Ave Salvador 4.9 Bold .Textsindicates a* change from. the:-2011..1.:uC:"/: * *Data as of 10,3c20_1 s:- .*:'FTR .* FulLTinie_-Residence * * . *, .. ..: -' .

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APPENDIX F 2018AREOR NOTES FOR TABLE 1 RESIDENCES LUC# Description R-A1 CAMP SAN MATEO (barracks)-This is an *employment and an FTR land use location for person 17 and older R-C2

• CAMP SAN ONOFRE FIRE STATION-This is an employment and FTR land use location for persons 18 and older.

R-C3 CAMP SAN ONOFRE (barracks)-This is an employment and FTR land use location for persons 17 and older.

R-E1 CAMP HORNO (barracks)-This is an employment and a FTR land use location for persons 17 and older.

R-G1 San Onofre State Park- (2) Camp Host Volunteers live FTR at campsites #103 - 104.

R-P2 SAN MATEO POINT HOUSING-This is a FTR.for all age groups.

R-R1 San Onofre Ill housing is located in sector Q and R.

R-Q2 This permanent housing development is a FTR for all ages.

R-P3 SAN ONOFRE RECREATION BEACH (SORB) - R-P3 and R-Q5 are temporary residences R-Q5 for military and other personnel eligible to use SORB facilities. Persons of all ages may stay up to 90 days per year (2160 hours0.025 days <br />0.6 hours <br />0.00357 weeks <br />8.2188e-4 months <br />). The campground hosts and employee residences were terminated in 2014 and 2015 VEGETABLE GARDENS Historically, several gardens have been identified on Avendia Salvador and documented in the Land Use Census. A drive by was conducted and the following was observed:

• The closest garden in Sector R is G-19 (786 Avendia Salvador).

• The closest garden in Sector Q is G-15 (130 Calle del Pacifico).

• The closest garden in Sector P is G-3 (4130 Calle Isabella).

• No gardens were identified in the remaining 13 sectors within the study area.

Based on the updated information, Figure 4 was revised to reflect the closest currently active gardens in each sector.

• OTHER LUC LOCATIONS CLOSER THAN THE CLOSEST RESIDENCE LUC# Description 0-1 SAN ONOFRE STATE BEACH GUARD SHACK-this is an employment land use location for persons 18 and older.

0-2 SAN ONOFRE BEACH CAMPGROUND-This is a non-employment (recreational) and use location for all age groups. A camper may stay a maximum of 30 days (720 hours0.00833 days <br />0.2 hours <br />0.00119 weeks <br />2.7396e-4 months <br />).

0-2A ENDLESS SUMMER SURF CAMP/CAMPGROUND HOST-The Endless Summer Surf Camp is located in spaces 99 to 101. The maximum occupancy for persons age 18 and older is 2880 hours0.0333 days <br />0.8 hours <br />0.00476 weeks <br />0.0011 months <br />. The maximum occupancy for persons 17 and younger is 360 hours0.00417 days <br />0.1 hours <br />5.952381e-4 weeks <br />1.3698e-4 months <br />. Thi_s is both an employment and a non-employment land use location.

0-3 STATE PARK OFFICE TRAILER-This is an employment land use location for persons 18 and older.

0-5 CAMP HORNO MOTOR POOL-This is an employment land use location for persons 17 and older.

0-6 SURF BEACH (LIFEGUARD)-This is an employment land use location for persons 18 and older.

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APPENDIX F 2018 AREOR LUC# Description 0-8 CAMP SAN MATEO MOTOR POOL-This is an employment land use location for persons 17 and older.

0-9 USMC CP SANITARY LANDFILL-This is an employment land use location for persons 18 and older.

0-10 CAMP SAN ONOFRE WASTE WATER TREATMENT PLANT (STP #11)-This is an employment land use location for persons 18 and older.

R-C2 SAN ONOFRE FIRE STATION #7 52 AREA-This is an employment land use location for persons 18 and older.

5 SURF BEACH GUARD SHACK-This is an employment land use location for persons 18 and older.

22 SCE Land Uses-Are occupied by unmonitored SCE workers 31A BORDER PATROL CHECKPOINT-This is an employment land use location for persons 18 and older.

32 SOUTHBOUND HIGHWAY PATROL WEIGH STATION-This is an employment land use location for persons 18 and older.

SONGS BEACH WALKWAY - The occupancy of the beach walkway running parallel to and adjacent to the SONGS seawall immediately next to the seawall was closed off for all of2018 with barricades at both the north and south entrances. The occupancy for this area, normally open to the general public, is estimated to be no more than 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> per year using normal LUC occupancy estimation protocols. The source data for the occupancy estimate was provided by the SOS maintenance supervisor responsible for seawall maintenance activities and by EIX SONGS security personnel. The 2017 Annual Radiological Environmental Operating Report (AREOR) assigned an occupancy of 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> (reference attachment 5.1 of procedure SDS-RP3-PCD-1014, Direct Radiation Exposure Controls and Monitoring).

Page 178

APPENDIX F 2018 AREOR Table 3 - Camp Pendleton Hunting Take Data. July 1, 2017 - June 30, 2018 Alpha~3 .. Q(2:?L: .

Bravot3 *.

• rota ls.>, .- :

> * * .~ <

1. The total hunting hours includes time attributable to multiple individuals. This value bounds the maximally exposed individual.

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APPENDIX F 2018 AREOR 20 4 !l,J.Hl(I I J!ie C1'1'!Ui 'Y5 L ndU

- - - - - ()

Page 180

APPENDIX F 2018 AREOR

(

!="i anre 7 2016 Land Use Census Residen ces e 'Residences

/

0 Units 213 Midp oint

[- .

'5.000 a 5,000 Feet Fae &t:ne:  :!IJ-t6LUCJ=lQwe2,,Ji e ~ ~- n!:.,j u:.r.e: l~ m.l ~ UC~UI.., &Tb Fe.Jture:; *J: tf.e.d herefn, are p.~ l19 el <XCl6.XY, .:rid ln~dledta- ~ p UJJ)OSes ,onty. 0 1~ -nC8- 3nd loQ'!'cm rr.3'Jbe. dl mirlttl at trJ~scaJe_.~ << a u t M.~ ttce pn,ger uccumen.b: M ~~Efe: ~ lrg,

~c:htc~h.Jre::s... 0 e al~"""'e-- :app andGl 3.

mas Ero~. M~ ts. a~mr!'d tr~ m'Ran.d~

a ~, . rc:r,:maucca'al'ULpe: "':..1>11 ~ncra C'i ~na 1'CNi1ltf > l ; ~ny. OIRand McNaltt '-°"""""'r . <!gl!I>

~6WSl .

Page 181

APPENDIX F 2018 AREOR 5,mile radius

~ _/

J J

Figu re 4 2017 Land Use Cens us Gardens

-+ Gardens Greater than 500 sq. ft.

0 Units 2/3 Midpoint 0 0 .5 Miles Fie Name: 2017LUC_Figure4_Gardens.n1xd o.te: Thursdoy. Sepli!mber 14. 2017 F-ures de p!Cled herein are plonnr,g lew!I accuracy. and intended for infomliltional pwposes only. Distances and locations may be dislor1ed a< "'5 scale. Always consult wilt 1he proper legal documents or agencies ,-rding such fe alures. Cl Re>I Properties

• M31)ping and GIS Thomas Bros. Maps ,s a regis1ered wademart of Rand McNaJfy

& Company. Reprodl.a!CI wiih permission granted by Rand McNaly & ~ Cl Rand McNally & C ~ y. All rights reseNed. Secto E

Page 182

APPENDIX F 2018 AREOR Fig u re 5 2014 Land Use Census Other Uses 0 Units 213 Midpoint Other Specified Use 0 05 Miles Fole Name 201*LUC_Fo0ure5. 0Cl,..U- ""'d O.u, T - y. ~ 25. 2014 Futures depcted hefNI .,. planntng ....,,. accuracy and ontended ror lnk>cmoll<>nal pu,_ only Oltuonc* and

- ... y ... _ .. ,ht*-* ....... ya....,tull

"'""' the p,oper legal dOcv.,.n.. or agencoea ,egotd,ng ouch featu- Cl Real ~ l i H . t.< pp,ng and GIS n,on- a<<. MIP6 is a N>g11tereo lrademe11t d R- McN If'/

& C..-ny Rtl>'OdllOld wtlh ~ - - g nted by R nd l,ldlalty & eo,.._,.111' 0 Rand Mc:Nally & ~ n y AP 11gh1a Page 183

• APPENDIX G 2018AREOR APPENDIX G. ERRATA TO PREVIOUS AREORs Page 184

Appendix G 2018 AREOR The SONGS garden was moved in the 4th quarter of 2015 to a distance of 0. 7 miles. While this fact was captured in the 2016 and 2017 AREOR, the Land Use Census, Table 1 shows an incorrect distance of 0.4 miles. There is no adverse impact to the REMP or Effluents program due to the error.

Page 185

APPENDIX-H 2018 AREOR APPENDIX H. CDPH CO-LOCATED TLDs Page I 86

Appendix H 2018AREOR DATA FROM THE CDPH TLDs CO-LOCATED WITH SONGS REMP TLDs DURING 2018 California Department of Public Health (CDPH) maintains a TLD program in the environs of SONGS. Per CDPH (Department of Public Health) request, the 2018 exposure results from the CDPH dosimeters are reported in the table below. The Location Numbers refer to the current

• SOS (SONGS Decommissioning Solutions) alphanumeric location identifier, the former NRC alphanumeric location identifier, and the current CDPH location number.

Table 36. 2018 State of California Data from the CDPD TLD program (mR/ standard quarter)

.'.':,'.*' ;,; ' .?**:.;:}' :::;*:.:, :'IF. iv):; '.,,.. '* *-r:: *ts ', '.~) ::};"':f!;*. .:::~:,-:*:u.*;:**,* ,Ji:'."lit:, ~;, r/';,,,7<>;,,,

• ,* . *' *':;2nd * ***'*,:ard *** '"fiitt:t~

,,; ,,i£p§ 1,,,b*w,V'{'('<'J< ,, ~ ;t\1474' i~:J' , . .;;,l;:~~jfiOIJ,"c~ymJ)~f~/

,,,f ',, '.J.:,'/,_r J'tf ',,*,'~' *';'* />0 ,: *,\~~- ' tk > * .* ,;i~if~~'~!~:~:.~~~w-~~~r.*;;.,i;1{'2. t¢~~q,~:.'.~:,v*i .,:Fq~,ri:r -i~tt~;:t,1 ,;i~tf,:i~)

SDS-1, NRC-7, CDPH #2 City of San Clemente 5 8 12 12 Former US Coast Guard SDS-22, NRC-11, CDPH #4 6 9 15 14 Station - San Mateo Point sos.:.34, NRC-14, CDPH #5 San Onofre Elementary School 7 8 13 29 Bluff (Adjacent to PIC #1) (San SDS-10, NRC-12, CDPH #6 5 10 11 13 Onofre Surfing Beach)

SDS-16, CDPH #7 East Southeast Site Boundary 6 6 11 7 SDS-2, NRC-23, CDPH #8 Camp San Mateo 8 10 15 13 SDS-3, NRC-19, CDPH #9 Camp San Onofre 7 12 9 13 Old El Camino Real (Old SDS-6, CDPH #10 3 6 4 91*

Highway 101) (ESE)

SDS-50,NRC-32, CDPH #13 Oceanside Fire Station 5 10 13 12

• CDPH RHB is investigating the anomaly of the TLD reading. This was discussed on a phone call on 4/14/19 @1345 with CDPH State enforcement Chief and SCE's Manager of RP and Chemistry. This issue has been entered into SCE's Corrective Action Program for documentation.

Note: Requirements were in the standard Technical Specifications (TS) adopted under the TS Improvement Program include reporting results of TLDs that are co-located with NRC dosimeters. The NRC dosimeters were exchanged by the CDPH under contract with the NRC. This contract expired in December 1997 and the NRC TLDs were no longer being deployed around SONGS. See Appendix I of the "1997 Radiological Environmental Operating Report," April, 1998.

The CDPH TLD program does not conform to the same environmental dosimeter standard (ANSI N13.37-2014) used to generate direct radiation data for the SONGS REMP TLD program.

The different methodologies and the different units of measurement make it unsuitable to directly compare the REMP TLD data to the CDPH TLD data. The CDPH TLD data is more erratic and exhibits a greater number of outliers than the SONGS REMP data. The CDPH data does not consider the location specific baselines. Therefore, the CDPH TLD data cannot be properly adjusted for the large effects that minor changes in location can have on the analysis.

However, within the limitations of the CDPH data, the results do support the conclusions of the SONGS REMP TLD program.

Page 187

APPENDIX I 2018AREOR APPENDIX I. ISFSI TLD DATA Page j 88

APPENDIX I 2018AREOR Summary Per 10 CFR 72.126, SONGS implemented an area monitoring TLD program in the vicinity of the ISFSI.

An evaluation of the entire REMP TLD database yielded an estimated background exposure rate of approximately 15.8 mrem/std. quarter (91 days). However, some local variability within the CAB/ EAB is to be attributable to factors external to SONGS: Therefore, a comparison of pre-operational data and operational data needs to be considered in conjunction with a comparison of ISFSI TLD data and the estimated baseline background exposure rate within the EAB. . .

Environmental exposure rates are variable and small changes in TLD location can measurably change the data. SONGS REMP TLD data show an environmental seasonal variability that are not related to any activities at SONGS. The ISFSI TLD data gathered to date follow a similar seasonal variability (Figure 13).

In addition to environmental factors, some non-lSFSI work activities at Unit 1 have elevated the pre-operational measured ISFSI TLD exposure. The storage and transport of radioactive materials and waste near the location of the ISFSI foundation area in 2001 and 2002 have elevated the exposure rates of TLDs 306 to 315. In addition, the movement of the Unit 1 reactor vessel in October 2002 caused a noticeable increase in the measured exposure for TLDs 301 to 315. The measured exposure rate for the ISFSI TLDs close to the ISFSI is consistent with the exposure rate expected from known radiological work activities. The elevated exposure rate from TLDs 301, 302, 303, 304, 323, 324, 325, 326, 327 and 328 is primarily due to the movement and storage of used fuel at the ISFSI.

In the second quarter of 2011 additional TLDs 327 and 328 were placed along the*fence on the southwest side of the ISFSI. These TLDs routinely have the highest measured doses, as they did. in 2018. These locations, however, are not accessible to members of the pubiic. Publicly accessible REMP TLDs include SCE-55, SCE-56 and SCE-:57. Only SCE-55 (San Onofre State Beach) recorded measurable dose, at approximately 14 mrem/yr.

• In 2016, additional ISFSI TLD locations were added immediately along the fence and seawall south and west of the ISFSI:

Locations SCE-339, 340, 341, 342, *343 and 344 (see Figure 13).

Starting in the fourth quarter 2010 neutron dosimeters were placed in ISFSI TLD canisters 311, 324, 325, and 326. In the second quarter 2011 neutron dosimeters were also placed adjacent to TLDs 327 and 328. Beginning in the 4th quarter of 2016, neutron TLDs were co-located with locations SCE-339 through SCE-343. The neutron TLDs were added to obtain neutron information prior to the off load of spent fuel from Units 2 and 3.

The 2018 neutron TLDs identified measurable levels of neutron radiation from spent fuel in storage. A dose equivalent conversion factor for the TLD neutron signal based on a similar ISFSI facility at another site was adopted to estimate the 11eutron dose rate at SONGS. It is being applied to .the SONGS TLD results only to provide an estimate of the neutron dose equivalent being measured. The neutron dose is not significant, and. has been included in the quarterly results for these locations in Table 37.

The results from all locations at the fence around the ISFSI pad show that a member of the public, when adjusted for occupancy per SDS-RP3-PCD-1014, is less than 1 mrem per year.

Page 189

APPENDIX I 2018 AREOR Table 37. 2018 ISFSI TLD Data 301 15.8 18.5 18.4 18.6 18.1 ND ND ND ND 73.7 10.6 ND 302 15.8 22.4 23.0 24.4 21.8 6.7 7.2 8.6 6.1 91.6 28.6 ND 303 15.8 20.9 22.4 22.2 21.0 5.2 6.6 6.5 5.3 86.6 23.5 ND 304 15.8 22.0 21.1 21.5 20.2 6.2 5.3 5.7 ND 84.8 21.7 ND 307 15.8 17.0 15.7 16.6 19.4 ND ND ND ND 68.6 ND ND 308 15.8 20.3 18.7 19.2 18.3 ND ND ND ND 76.5 13.4 ND 309 15.8 20.7 19.3 19.5 19.4 ND ND ND ND 79.0 15.9 ND 310 15.8 20.9 19.1 19.8 20.2 5.1 ND ND ND 80.1 17.0 ND 311 ISFSl-01° 15.8 20.4 19.0 19.3 19.5 ND ND ND ND 78.3 15.2 ND 312 15.8 16.5 16.8 15.6 16.0 ND ND ND ND 64.8 Nb ND 314 15.8 21.0 19.3 19.6 20.1 5.2 ND ND ND 80.0 17.0 ND 315 15.8 20.7 18.7 19.8 19.9 ND ND ND ND 79.0 16.0 ND 316 15.8 17.0 15.8 16.2 17.2 ND ND ND ND 66.3 ND ND 317 15.8 17.7 16.1 16.1 17.4 ND ND ND ND 67.4. ND ND 318e 15.8 19.4 18.2 19.0 19.3 ND ND ND ND 75.9 12.8 ND 319e 15.8 18.9 17.8 18.5 19.4 ND ND ND ND 74.5 11.5 ND 32oe 15.8 19.2 17.5 19.4 19.6 ND ND ND ND 75.7 12.6 ND 321e 15.8 19.6 18.7 19.1 19.2 ND ND ND ND 76.6 13.6 ND 322 15.8 21.4 25.0 18.8 19.2 5.6 9.2 ND ND 84.3 21.3 ND 323 15.8 40.8 51.2 24.5 20.9 25.1 35.4 8.8 5.1 137.4 74.4 ND 324 ISFSl-04° 15.8 25.8 27.5 28.0 26.4 10.0 11.7 12.2 10.6 107.6 44.6 ND 325 ISFSl-03° 15.8 25.6 24.8 26.8 26.3 9.8 9.0 11.0 10.5 103.4 40.4 ND 326 ISFSl-02° 15.8 22.3 20.0 23.0 21.0 6.5 ND 7.2 5.2 86.3 23.2 ND 327 ISFSl-05° 15.8 46.6 44.6 43.0 40.9 30.9 28.9 27.3 25.1 175.2 112.1 ND 328 ISFSl-06° 15.8 46.4 35.8 37.7 34.6 30.7 20.1 22.0 18.9 154.6 91.6 ND 339 ISFSl-08° 15.8 21.5 22.7 23.7 22.1 5.7 6.9 8.0 6.4 90.0 26.9 ND 340 ISFSl-09° 15.8 20.2 20.3 21.8 19.2 ND ND 6.0 ND 81.6 18.5 ND 341 ISFSl-10° 15.8 19.6 21.1 23.6 21.9 ND 5.3 7.8 6.1 86.2 23.1 ND 342 ISFSl-11° 15.8 22.5 26.8 25.5 23.4 6.7 11.1 9.7 7.6 98.2 35.1 ND Page I 90

APPENDIX I 2018AREOR 343 ISFSl-12C 15.8 21.6 25.1 25.0 21.6 5.8 9.3 9.3 5.8 93.3 30.3 344 15.8 21.0 20.9 21.4 21.0 5.2 5.1 5.6 5.3 84.3 21.2 ND San Onofre State 55 (f)(e) Beach (U 1 West) 15.8 20.4 19.4 18.5 18.8 ND ND ND ND 77.0 13.9 ND ISFSl-07C San Onofre State ND ND 70.2 ND ND 56 8 15.8 19.6 15.6 16.9 18.1 ND ND Beach U1 West San Onofre State ND ND ND 68.5 ND ND 57 8 15.8 17.4 16.5 17.2 17.3 ND Beach Unit 2 SONGS 19.4 ND ND ND 78.1 15.0 ND 59 15.8 19.4 19.3 20.1 ND Meteorological Tower Notes:

a. ISFSI TLDs are placed around the ISFSI pad, and not in locations accessible to the general public.

b. Public dose is based on the individual location occupancy as specified in SDS-RP3-PCD-1014.

c. Station includes neutron dose, estimated using a neutron signal conversion factor measured at a similar ISFSI installation (HPSTID 08-015)

d. 1.051 mrem/mR from ANSI N13.37-2014, Section 3.2.1

e. These TLDs are publicly accessible.

f. TLD # 55 did not have a detectable neutron signal in 2018 Page 191

APPENDIX I 2018 AREOR 78

.u 4

7 9

Figure G-2 3 ISFSI TLDs and' selec1ed 4 REMP T LDs near the 4 ISFSI Foundati,on 4 llO 37

+ 1SFS I. Yes 317 42

.A ISFS l, No 318 87 319 T'LD , Yes 32.0 Ge.ir>Yc.lili-e

• cc li hO 3U

- - Maje) r R0iads

- Ra Uroad 4 4

100

.. ,...... alffi,'ft!O Q

r,.1*118-l.11,iinxJ 100

' 4 4

..., ',Ggt,;i<,-O,Jllltll'\"'1QIQl1~

• rl *2"i111 33

~ ,!Wfhpimll*anP1lfllt!dli!)'T 1_ _ _ "11\11'*---* l'!OMM eJ1<aM,1PWW

~*~ . . ..

4

~:*e1:~~-~,:~~~w =r::~'.

--- ... - ........... 1. . . . . . . . . . . . . .. "' . . .....

-p ~

. . . .. , : j _ ~ - ~ , , . w,t,.1Miffi**- -

• 4 tO ,_. * - 'l'IIY*i dllaAir'U di.fl 4

Ii Indicates historical TLD locations that are no longer used Figure 12 - SONGS ISFSI and Selected REMP TLD Locations Page 192

APPENDIX I 2018 AREOR ISFSI and REMP TLDs 30 25 20 So

-ci t;

0:::

E 15 10

- DR 31 (Control) - DR 318 (ISFSI)

- DR 321 (ISFSI) DR 55 (EAB)

- DR 56 (EAB) - DR 59 (EAB) 5 0

2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Figure 13 - ISFSI and REMP TLDs Page j 93

APPENDIX I 2018 AREOR ISFSI Sample Plan TLDs In accordance with site REMP procedures SONGS developed a TLD sample plan (SDS-CH2-PLN-001) to evaluate potential enhancements to the ISFSI direct radiation environmental monitoring program at SONGS . The initial data from this sample plan is summarized in Table 38.

Sample Plan TLD 798 (located at the northwest corner of the ISFSI , about 25 meters due north of REMP TLD 55) is the only Sample Plan TLD with an annual facility dose greater than ND.

Table 38 . ISFSI Sample Plan TLD Data Baseline Adjusted Annual*

2018 Quarterly Results (mrem) Annual Annual Quarterly Dose to 2018 Quarterly Results (mrem) Annual Monitoring Facility

1. Location Baseline Member of Baseline Data Dose (mrem) Public 1 2 3 4 1 2 3 4 (mrem) (mrem)

(mrem)

Seawall at NW Corner of SCE-79B ISFSI 15.8 20 .1 18.2 20.2 20 .7 ND ND ND ND 63.1 79.2 16.1 ND Seawall , 30 meters SE of SCE-80B TLD 55 15.8 19.4 17.5 16.9 16.8 ND ND ND ND 63.1 70 .6 . ND ND Seawall, 70 meters SE of SCE-81B TLD 55 15.8 19.6 16.7 16.9 16.3 ND ND ND ND 63 .1 69 .3 ND ND BLUFF B NW of ISFSI on bluff 15.8 18.2 17.5 18.1 17.4 ND ND ND ND 63.1 71 .2 ND ND Parking lot 3, 30 meters NJA(1>

PL 3#1 NWofTLD 321 15.8 17.5 18.1 19.5 ND ND ND ND 63.1 55.0 ND ND Parking lot 3, 60 meters PL 3 #2 15.8 N/A<1> 18.6 20.1 20.3 ND ND ND ND 63 .1 59.0 ND ND NW ofTLD 321 1 Locations PL 3 #1 and PL 3 #2 were not monitored in the first quarter.

• Adjusted for occupancy in accordance with SDS-RP3-PCD-1014.

Page I 94

APPENDIX J 2018 AREOR APPENDIX J. OFFSITE GROUND WATER SAMPLING Page 195

APPENDIX J 2018 AREOR Offsite Drinking Water Data All investigations have shown that there are no drinking water pathways at SONGS .

Figure 15 below illustrates groundwater well locations along with the flow of the groundwater. SONGS had no impact on drinking water wells in the vicinity of SONGS .

Orin ng Water Welts Figurei 14 - Closest Drinking Water Wells Page I 96

Glossary 2018AREOR Glossary a posteriori After the fact a priori Before the fact ALARA As Low As is Reasonably Achievable means making every reasonable effort to maintain exposures to radiation as far below the dose limits in this part as is practical consistent with the purpose for which the licensed activity is undertaken, taking into account the state of technology, the economics of improvements in relation to state of technology, the economics of improvements in relation to benefits to the public health and safety, ~nd other societal and socioeconomic considerations, and in relation to utilization of nuclear energy and licensed materials in the public interest.

Cosmogenic Radionuclides (or isotopes) created when a high-energy cosmic ray nuclides interacts with the nucleus of an atom. These isotopes are produced within Earth materials such as rocks or soil, in Earth's atmosphere, and in extraterrestrial items such as meteorites. Radioactive isotopes beryllium-7 and beryllium-10 fall into this series of three light elements (lithium, beryllium, boron) formed mostly by cosmic ray spallation nucleosynthesis, both of these nuclides have half-lives too short for them to have been formed before the formation of the Solar System, and thus they cannot be primordial nuclides. Since the cosmic ray spallation route is the only possible source*of beryllium-7 and beryllium-10 occurrence naturally in the environment, they are therefore cosmogenic.

Below is a list of radioisotopes formed by the action of cosmic rays in the atmosphere; the list also contains the production mode of the isotope.

3 ...... - - * *

• r Ps."e>t. <?P;J.,NlcMe.~f for1haiio.~:f1s,ofope _:I\A'6de.~of .f~l'Rl~tiQ~ ;**,.* 1 r** ""!~~~- * ~-* * * * * --*1 f{!rlt\~til"~ ~n, 12 C)'H _ _L3_'P-~pallation (Ar) . . .- ~

L7~~< 'JSpallatio~ (N arid 0) I*

, c~ 0~:~*-'.:1spallation (N t* .11 C and 0)

!Spallation (N and 0) 34 mc1

• Spallation (Ar)

I ~S - Spallation (Ar) 5 j 36CI l 3 CI (n, y) 36CI 5

-i I

I I i~4c.':, *I I 37Ar T37 CI (p, r,) 37Ar *1 r*

i 1~-*

14N (n, p) 14C

~~f=, __ffiao (p, _n)1aF and

• . Spallat1on (Ar)

...-r*

1 ,

• ________J _ _ _ _ _J.-..------*--*--"-""4 3a~!;allation (Ar) - - - - -..1 '

f.~: **.*?Na. *.::::Spallation (Ar) 2 I

39 Ar 1.

38 39 Ar (n, y) Ar .

r. Na:* *jspallation (Ar) I 39 CI I 39 4°Ar (n'. np) CI &

+::'~: :i,'.~: ---*1 24 1 0

U*~-~pallatio~---L'Ar r ::: <~:~~~---~~t~ <~c1>

/

"=:

Page 197

Glossary 2018 AREOR Decay Series There are three naturally occurring decay series of heavy elements that transform into a series of various radioactive elements by releasing energy in the form of particles, (such as alpha or beta), and/or gamma rays to end in a stable form of non-radioactive Lead. All three decay series start with extremely long lived radioactive, heavy elements that can be measured in geologic time units. They are Uranium-238 with an approximate half-life of 4.5 billion years, Uranium -235 with a half-life of about 700 million years, and Thorium- 232 with a half-life of 14 .billion years. All three series contain some more well-known radioactive species, Radium and Radon.

Distinguishable Detectable concentration of a radionuclide that is statistically different from from the background concentration of that radionuclide at that location.

background Dose The amount of radiation that is absorbed by a person's body. In the radiation field the term dose is sometimes used interchangeably with dose equivalent.

Half-life A measure of how fast half the mass of a radioactive element will transform itself into another element. Each radioactive element has its own unique rate of transformation. Consequently, if a radioactive element, such as lodine-131 has a half-life of 8 days, then in 8 days half of the original amount of lodine-131 will be gone; in another 8 days half of that half will be left and so on.

Gamma A scientific method used to analyze gamma rays emanating from Spectroscopy radioactive elements. The analytical system determines the gamma ray energy which acts as a "fingerprint" for specific radioactive materials. For example, Potassium-40 (K-40) has a ve*ry, distinctive gamma energy at 1460 keV. This uniqueness allows the instrument to positively identify the K-40 1460 energy as its own unique fingerprint.

A keV is an abbreviation for kilo electron volt, which is a measure of energy at the atomic level. A kilo is a scientific prefix for the multiplier 1,000.

Gross Beta A screening technique employed to measure the total number of beta particles emanating from a radioactive sample, without isotopic identification. At SONGS samples with an elevated gross beta are analyzed by gamma spectroscopy to identify the specific radionuclides causing the elevated gross beta signal. A beta particle is a negatively charged particle a mass equal to that of an orbiting electron.

Liquid The analytical technique by which tritium activity is measured in water.

Scintillation A sample is placed in a glass vial containing scintillation cocktail. The mixture is sealed and homogenized. When the tritium decays it emits a very low energy beta particle. The beta interacts with the scintillating medium and produces a light pulse that is counted by the instrument.

Millirem (mrem) one thousandth (1/1000) of a rem.

mi Iii Roentgen one thousandth (1/1000) of a Roentgen (mR)

Page 198

Glossary 2018AREOR pCi/kg an acronym for a pico-curie per kilogram, which is a concentration unit that defines how much radioactivity is present in a unit mass, such as a kilogram. A "pico" is a scientific prefix for an exponential term that is equivalent to one trillionth (1/1,000,000,000,000).

pCi/1 an acronym for a pico-curie per liter, which is a concentration unit that defines how much radioactivity is present in a unit volume, such as a liter.

Rem an acronym for roentgen equivalent man. It is a conventional unit of dose equivalent that is based on how much of the radiation energy is absorbed by the body multiplied by a quality factor, which is a measure of the relative hazard of energy transfer by different particles, (alpha, beta, neutrons, protons, etc.), gamma rays or x-rays. In comparison the average natural background radiation dose equivalent to the United States population is estimated to be 292 millirems per year, or 0.8 millirem per day, with 68 % of that dose coming from radon. A millirem is one thousandth, (1/1000), of a rem.

Roentgen a special unit of exposure named after the discoverer of X-Rays, Wilhelm Roentgen. It is a measure of how much ionization is produced in the air when it is bombarded with X-Rays or Gamma Rays. Ionization is described as the removal of an orbital electron from an atom.

Skyshine is radiation from a radioactive source that bounces off air molecules in the sky, much like a cue ball does off the banking of a billiard table, and is scattered/redirected back down to the earth.

Thermolumines very small plastic-like phosphors or crystals that are placed in a small cent Dosimeters plastic cage and mounted on trees; posts, etc. to absorb any radiation (TLD} that impinges on the material. SpeciaJ readers are then used to heat the plastic to release the energy that was stored when the radiation was absorbed by the plastic. The energy released is in the form of invisible light and that light is counted by the TLD reader. The intensity of the light emitted from the crystals is directly proportional to the amount of radiation that the TLD phosphor was exposed to.

Site Area SONGS SAB is defined as that line beyond which the land is not owned, Boundary (SAB} leased, or otherwise controlled by the licensee; from ODCM definition.

Tritium H-3 is the naturally occurring radioactive form of Hydrogen. All (Hydrogen-3 or radioactive elements are represented as a combination of their chemical H-3) symbol and their mass number. Therefore, Tritium, which is a heavy form of the Hydrogen molecule with one proton and two neutrons in the nucleus of its atom, is abbreviated and represented by its chemical symbol, H-3, for Hydrogen and 3 for the number of particles in its nucleus, or mass number. Similarly, other radioactive elements, such as

. Potassium-40, can be represented and abbreviated as K-40, and so on.

Page I 99