Text

Independent Spent Fuel Storage Facility - 2011 Annual Radiological Environmental Operating Report
	ML12135A381
Person / Time
Site:	San Onofre
Issue date:	05/10/2012
From:	St.Onge R; Southern California Edison Co
To:	; Office of Nuclear Reactor Regulation, Document Control Desk
References
	Download: ML12135A381 (120)
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r . SOUTHERN CALIFORNIA Richard J. st. Onge 1 . ._ EDISON Director, Nuclear Regulatory Affairs and Emergency Planning An EDISON INTERNAT/oNAL Company Tech Spec Section D6.9.1.3 Tech Spec Section 5.7.1.2 May 10, 2012 ATTN: 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 2011 Annual Radiological Environmental Operating Report San Onofre Nuclear Generating Station Units 1, 2 and 3 and Independent Spent Fuel Storage Facility

Dear Sir or Madam:

As required by Technical Specification (TS) Section D6.9.1.3 of San Onofre Nuclear Generating Station (SONGS) Unit 1 Facility Operating License DPR-13, and TS Section 5.7.1.2 of Facility Operating Licenses NPF-1 Oand NPF-15 for SONGS Units 2 and 3, respectively, this letter transmits the 2011 Annual Radiological Environmental Operating Report (AREOR) for SONGS Units 1, 2 and 3.

The AREOR covers the operation of SONGS during January 1, 2011 through December 31, 2011 and includes summaries, interpretations, and analyses of trends of the results of the Radiological Environmental Monitoring Program.

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

If you require any additional information, please contact Mr. Ryan I. Treadway at (949) 368-9985. .

Sincerely, P.O. Box 128 San Clemente, CA 92672

Document Control Desk May 10, 2012 Enclosure as Stated cc: E. E. Collins, NRC Regional Administrator, Region IV R. Hall, NRC Project Manager, SONGS Units 2 and 3 J. C. Shepherd, NRC Project Manager, SONGS Unit 1 J. E. Whitten, NRC Region IV, Nuclear Material Safety Branch Chief G. G. Warnick, NRC Senior Resident Inspector, SONGS Units 2 and 3 S. Y. Hsu, California Department of Public Health W. C. Allen, NRC Project Manager, San Onofre ISFSI

2011 Radiological Environmental Operating Report San Onofre Nuclear Generating Station Southern California Edison An Edison International Company Docket Nos. 50-206, 50-361, 50-362 License Nos. DPR-13, NPF-10, NPF-15 April 2012

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2011 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT San Onofre Nuclear Generating Station UNITS 1,2, & 3 Southern California Edison An Edison International Company Prepared by: N. A. Hansen ~~-,--,-+~~ ______-,----,-MIJ Y 3) )0 I ?-

Approved by: R. K. Heckler ~ 1~!2JOr1-Approved by: M. J. Johnson Approved by: M. M. Lewis IV!fl1UL t--l§'w 15 5/~f 2-Approved by: S. M. Hoque ~Jfr.o ~'T 5/1/7011--

TABLE OF CONTENTS Page Table of Contents ......................................................................................................................................... i EXECUTIVE

SUMMARY

/ INTRODUCTION ....................................................................................... 1 Objectives ..............................................................................................................................................2 Sample Collection ..................................................................................................................................2 Regulatory Limits, Guidance, and Requirements ..................................................................................3 Data Management ..................................................................................................................................4 Detection Limit Terminology ................................................................................................................5 Conclusion .............................................................................................................................................5 References ..............................................................................................................................................6 APPENDIX A - Sample Type and Sampling Location .............................................................................. 7 Table A-1 REMP Sample Locations .................................................................................................8 Table A-2 Sector and Direction Designation for REMP Sample Location Map ............................12 Figure 5-1 San Onofre REMP - One-Mile Radius ..........................................................................13 Figure 5-2 San Onofre REMP - Two-Mile Radius .........................................................................14 Figure 5-3 San Onofre REMP - Five-Mile Radius .........................................................................15 Figure 5-4 San Onofre REMP - 30 Mile North ...............................................................................16 Figure 5-5 San Onofre REMP - 45 Mile South ...............................................................................17 APPENDIX B - Summary, Results, and Discussions of 2011 Environmental Data ................................ 18 Summary ..............................................................................................................................................19 Results and Discussions of 2011 Environmental Data ........................................................................20 Table B-1 2011 TLD Data ..............................................................................................................22 Figure 5-6 2011 Kelp Sample Locations .........................................................................................29 Table B-2 Summary of Nuclear Power Plant Related Gamma Isotopic Analysis Confirmed above MDC 30 Table B-3 REMP Sample Analysis Summary for 2011 .................................................................32 Detectable Activity Attributed To The Trans-Pacific Transport of Airborne Material From The Fukushima Dai-ichi Accident ..............................................................................................................33 i

Table B-4 Fukushima Accident Data ..............................................................................................34 Statistical Summary of Remp Data for 2011 .......................................................................................38 Table 1A Quarterly Gamma exposure (millirem) ........................................................................ 39 Table 2 Weekly Airborne Particulates - Gross Beta Activity ................................................... 39 Table 3 Weekly Radioiodine I-131 Activity ............................................................................. 40 Table 4A Quarterly Composite Airborne Particulates Gamma.................................................... 41 Table 5 Monthly Ocean Water Gamma Spectral Analysis ....................................................... 42 Table 7 Quarterly Composite Ocean Water Tritium Activity ................................................... 44 Table 9A Monthly Drinking Water Analysis ............................................................................... 45 Table 10 Semi-Annual Shoreline Sediment Gamma Spectral Analysis ..................................... 46 Table 11 Semi-Annual Ocean Bottom Sediment Gamma Spectral Analysis.............................. 47 Table 12A Semi-Annual Non-Migratory Marine Animals Analysis - Flesh ................................. 48 Table 13A Semi-Annual Local Crops Gamma Spectral Analysis ................................................. 51 Table 14 Annual Soil Analysis .................................................................................................... 53 Table 15 Semi-Annual Kelp Analysis ......................................................................................... 54 APPENDIX C - Summary of Quality Control Programs ......................................................................... 55 Interlaboratory Cross-Check Program .................................................................................................56 Quarterly Duplicate TLDs ...................................................................................................................57 Annual Duplicate TLDs .......................................................................................................................58 Comparison of TLD to PIC Data .........................................................................................................58 Calibration of Air Sampler Volume Meters.........................................................................................58 Table C-1 Analytics Cross-Check Program Summary ...................................................................59 APPENDIX D - Comparison of Operational to Preoperational Data and Analysis of Trends................. 68 Comparison of Operational to Preoperational Data and Analysis of Trends.......................................69 Table D - 1A Shoreline Sediments Concentration (pCi/g, wet weight) PreOperational and Operational Data SONGS Units 2/3 .............................................................................................73 Table D-1B Ocean Bottom Sediments Concentration (pCi/g, wet weight) PreOperational and Operational Data SONGS Units 2/3 .............................................................................................73 ii

Table D-2 Marine Species Concentrations (pCi/g, wet weight) PreOperational and Operational Data SONGS Units 2/3 ....................................................................................................75 Table D-3 Soil PreOperational and Operational Data (pCi/g, wet weight) SONGS Units 2/3.......80 Table D-4 Kelp PreOperational and Operational Data (pCi/g, wet weight) SONGS Units 2/3 .....80 APPENDIX E - Deviations from ODCM Sampling Requirements in 2011 ............................................ 81 Deviations from ODCM Sampling Requirements in 2011 ..................................................................82 Part I Terrestrial Sampling...............................................................................................................82 Part II Marine Sampling ....................................................................................................................83 APPENDIX F - Land Use Census ............................................................................................................ 84 Introduction ..........................................................................................................................................85 Definitions of Uses ..............................................................................................................................85 The Study Scope ..................................................................................................................................86 Methodology ........................................................................................................................................86 Table F-1 2011 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet .................................88 Table F-2 2011 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet .................................89 Table F-3 2011 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet .................................90 APPENDIX G - Figures for 2011 ............................................................................................................. 91 Figure 1 Potential Radiation Exposure Pathways Leading to Man ..................................................92 Figure 2A Direct Radiation Monitoring 1981 to 1999 ....................................................................93 Figure 2B Direct Radiation Monitoring 1998 to 2011 ....................................................................94 Figure 3A Monthly Average Airborne Particulates Gross Beta Activity Preoperational and Operational Data for SONGS Unit 2/3 ................................................................................................95 Figure 3B Monthly Average Airborne Particulates Gross Beta Activity SONGS Units 2 and 3 from Jan 1988 to Dec 1997 ..................................................................................................................96 Figure 3C Monthly Average Airborne Particulates Gross Beta Activity SONGS Units 2 and 3 from Jan 1998 to Dec 2011 ..................................................................................................................97 Figure 3D Weekly Airborne Particulate Gross Beta Activity Jan to Dec 2011 ..............................98 Figure 4 I-131 in Aquatic Kelp ........................................................................................................99 iii

APPENDIX H - Errata to the 2010 AREOR .......................................................................................... 100 APPENDIX I - REMP TLD's Co-located with DHS TLDs During 2011 .............................................. 101 APPENDIX J - ISFSI TLD DATA ......................................................................................................... 103 Table J-1 ISFSI TLD Data ...........................................................................................................106 Figure 6-1 ISFSI TLDs and REMP TLDs within the EAB ...........................................................107 Figure 6-2 ISFSI TLDs and Selected REMP TLDs near to the ISFSI Foundation .......................108 Figure 6A Direct Radiation Monitoring ISFSI & Selected REMP TLDs - Quarterly Gamma Exposure (mR/std Quarter) ................................................................................................................109 APPENDIX K - Offsite Ground Water Sampling ................................................................................. 110 Figure 7-1 Drinking Water Wells ..................................................................................................112 iv

Executive Summary The data from the San Onofre Nuclear Generating Station (SONGS) Radiological Environmental Monitoring Program (REMP) indicate that SONGS had a negligible radiological environmental impact during 2011. We further conclude that dose to a member of the general public attributable to all SONGS related radiological activities is below regulatory limits.

Preparation of the 2011 Annual Radiological Environmental Operating Report (AREOR) used the data reduction protocol described in NUREG/CR-4007. A meaningful analysis of data at, near, or below the detection limit must necessarily involve a consideration of the degrees of uncertainty associated with the data. The data have been summarized in the Statistical Summary of REMP Data found in Appendix B. The plant related radionuclides, including cesium-137 (Cs-137) in soil, as well as iodine-131 (I-131) in kelp, detected above the a posteriori MDC (minimum detectable concentration) are attributable to fallout from nuclear weapons testing (Cs-137) and medical administrations of radionuclides (I-131). These isotopes have been detected at indicator as well as control locations in past years. Radioactivity attributed to the trans-Pacific migration of airborne material from the nuclear accident at the Fukushima Dai-Ichi Nuclear Power Station was also detected during 2011 and is not related to the operation of SONGS. The naturally occurring radionuclides, including beryllium-7 (Be-7), potassium-40 (K-40), and thorium-228 (Th-228), were detected in both control and indicator locations at similar concentrations and are not related to the operation of SONGS. Refer to Appendix B for a more detailed discussion.

INTRODUCTION SONGS consists of two pressurized water nuclear reactors housed in separate containment buildings. Unit 1 attained initial criticality in June 1967, and was permanently retired from service in November 1992. The Unit 1 aboveground structures have been removed. Unit 2 attained initial criticality in July 1982 and Unit 3 in August 1983. Both units continued to operate throughout 2011.

The purpose of the REMP is to quantify ambient radiation levels in the environs of SONGS, and to identify and quantify concentrations of radioactivity in various environmental media in the vicinity of SONGS that have a potential radiation exposure pathway to a member of the general public. Thermoluminescent Dosimeters (TLDs) are used to measure direct radiation levels.

Sampled environmental media include soil, shoreline sediment (beach sand), air (particulate &

iodine), local crops, non-migratory marine species, kelp, drinking water, ocean water, and ocean bottom sediments. Each of the samples was analyzed for both naturally-occurring and SONGS-related radionuclides.

The REMP is conducted in accordance with Section 5.0 of the SONGS ODCM (Offsite Dose Calculation Manual).

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To conform with 10 CFR Part 50, Appendix I, Section IV B.2, data on measurable levels of radiation and radioactive materials in the environment have been compared against predicted (calculated) values to evaluate the relationship between quantities of radioactive material released in effluents and resultant radiation doses to individuals from principal pathways of exposure. Refer to Appendix B for a correlation of effluent to environmental concentrations.

A land use census was performed in 2011 to ensure that changes in the use of areas at and beyond the site boundary are identified and that modifications to the monitoring program are made if required by the results of this census. Appendix F of the report identifies changes to the census and the resultant dose increase, if any, to individuals from principal pathways of exposures in conformance with 10CFR Part 50, Appendix I, Section IV. B.3.

OBJECTIVES

1. To fulfill the radiological environmental monitoring requirements of the ODCM

2. To detect any significant increase in the concentration of radionuclides in critical pathways.

3. To detect any significant change in ambient gamma radiation levels.

4. To verify that the operation of SONGS Units 2 and 3 has a negligible effect on the health and safety of the public and the environment.

SAMPLE COLLECTION Samples of various environmental media were obtained to meet the stated objectives. The selection of sample types was based on established critical pathways for the transfer of radionuclides through the environment to individuals, and the evaluation of data during the operational phase. Sampling locations were selected with consideration given to site meteorology, local demography, and land uses. Refer to Appendix A for a complete list of REMP sample locations as described in Table 5-4 of the ODCM.

Sampling locations were divided into two classes, indicator and control. Control stations were at locations considered to be unaffected by SONGS operations. All others are considered indicator locations and may be potentially affected by SONGS operations.

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REGULATORY LIMITS, GUIDANCE, AND REQUIREMENTS

10CFR50 The Code of Federal Regulations Title 10, Part 50, Appendix I.

40CFR190 The Environmental Protection Agency (EPA) has established environmental radiation protection standards for nuclear power plants in 40CFR190. These limits are applicable to the sum of both liquid and gaseous effluents and direct radiation. The environmental doses calculated at SONGS are a small fraction of the dose limits established by the EPA.

refer to the 2011 SONGS Annual Radioactive Effluent Release Report for details.

10CFR20 10CFR20, Appendix B, Table II, Effluent Concentrations and Appendix C, Concentration for Release to Sewerage Guidance:

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

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

Regulatory Guide 4.8 Environmental Technical Specifications for Nuclear Power Plants, 1975

Regulatory Guide 4.13 Performance, Testing, and Procedural Specification for Thermoluminescent Dosimetry:

Environmental Applications, 1977

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

Regulatory Guide 1.109 Calculation of Annual Doses to Man from Releases of Reactor Effluents for the Purpose of Evaluating Compliance with 10CFR Part 50, Appendix I, 1977 3

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 (TLDs)

American National Standard Performance, Testing, And Procedural Specifications for Thermoluminesence Dosimetry (Environmental Application), 1975

Regulatory Guide 4.15, Revision 1 Quality Assurance for Radiological Monitoring Programs (Normal Operations) -

Effluent Streams and the Environment, 1979

NUREG 1576 MARLAP 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 DATA MANAGEMENT The tabulated means, ranges and standard deviations presented in Appendix B were calculated following the standard format specified in Regulatory Guide 4.8, the Radiological Assessment Branch Technical Position, Revision 1, 1979, and in accordance with the protocol outlined in NUREG/CR-4007. A custom data management software package was used to perform the statistical analysis and tabulation of the data.

The REMP data are reviewed for accuracy and comparison against NRC reporting levels, and then entered into the REMP database. One of the REMP menus flags measurements exceeding the administrative levels (10% of the NRC reporting levels) established by SCE (Southern California Edison). The a posteriori 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.

The impact of SONGS on the surrounding environment was assessed through a series of analyses. These analyses included: data reduction, comparisons of indicator to control locations, and summary (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 2011 Land Use Census (Appendix F).

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All Radiological Environmental Monitoring activities for San Onofre are assessed in accordance with Quality Assurance requirements as defined in Regulatory Guide 4.15, Revision 1. The Contracted Environmental Analysis Laboratory (CEAL) participated in an interlaboratory 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, Revison 1. Refer to Appendix C.

DETECTION LIMIT TERMINOLOGY This report utilizes three distinct terms to describe the concept of lower limit of detection at various detection confidence levels. The terms are briefly defined below. For a more thorough discussion, the reader should refer to NUREG/CR-4007.

Critical level - Defined as 1.64 sigma. For a sufficiently large database of [isotopically analyzed] sample results, with the true activity being equal to zero, approximately 5% of the results are expected to be above the critical level.

Lower Limit of Detection (LLD) - The LLD is the a priori (before the fact) lower limit of detection. This value is calculated for each isotope and every matrix based on typical or expected values of decay time, sample size, counter efficiency, etc. These values are listed in the ODCM and represent the maximum permissible value for the lower limit of detection for 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, counting efficiency as determined by recent calibration, etc. 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 analytes. Values above the MDC are presumed to represent detected activity at the 95%

detection confidence level. Refer to NUREG 1576.

The 2011 SONGS REMP data required by the ODCM have been summarized in the Statistical Summary of REMP Data found in Appendix B.

CONCLUSION Levels of radioactivity in environmental media are a function of several factors including: site release rates; meteorology; number, location, size and date of nuclear weapons tests; seasonal variability of fallout; soil conditions; local terrain and variability in the natural environment; and accidents at other nuclear power plants. Radioactivity attributed to the trans-Pacific transport of airborne material from the Fukushima Dai-Ichi accident was detected in 2011.

Radiological environmental data collected throughout 2011 have been evaluated to determine the impact, if any, of San Onofre operations 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 significantly greater than background levels.

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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 2011 against the levels observed in pre-operational years.

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

In comparing these findings to the conservatively-defined limits of the facility operating licenses, it is concluded that the radiological environmental impact of the operation of SONGS through 2011 has been negligible, and the resulting dose to a member of the general public is negligible.

REFERENCES

1. 10CFR50, Appendix I

2. Land Use Census for SONGS Units l, 2 and 3 Radiological Environmental Monitoring Program, October 2011.

3. SONGS Offsite Dose Calculation Manual (ODCM) Revision 4, Section 5.0, 2010.

4. SONGS Offsite Dose Calculation Manual (ODCM) Revision 5, Section 5.0, 2011.

5. SONGS Radiological Monitoring (RM) Procedures: SO123-RM-1 (SO123-IX-1.10).

6. L. Currie. 1968 Limits for the Qualitative Detection and Quantitative Determination -

Application to Radiochemistry, Analytical Chemistry, vol. 40 pp. 586-593 6

APPENDIX A SAMPLE TYPE AND SAMPLING LOCATION 7

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING SAMPLE LOCATIONS TYPE OF SAMPLE AND SAMPLING LOCATION DISTANCE* DIRECTION*

(Omitted sample numbers are due to program modifications) (miles) (Sector)

Direct Radiation 1 City of San Clemente (Former SDG&E Offices) 5.7 NW 2 Camp San Mateo - MCB 3.6 N 3 Camp San Onofre - MCB 2.8 NE 4 Camp Horno - MCB 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 (Adjacent to PIC #1) 0.7 WNW 11 Former Visitors' Center 0.4 ** NW 12 South Edge of Switchyard 0.2 ** E 13 Southeast Site Boundary (Bluff) 0.4 ** ESE 15 Southeast Site Boundary (Office Building) 0.1 ** SSE 16 East Southeast Site Boundary 0.4 ** 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 8.1 NW 31 Aurora Park - Mission Viejo 18.6 NNW 33 Camp Talega - MCB 5.9 N 34 San Onofre School - MCB 1.9 NW 35 Range 312 - MCB 4.8 NNE 36 Range 208C - MCB 4.1 NE 38 San Onofre State Beach Park 3.4 SE 40 SCE Training Center - Mesa (Adjacent to PIC #3) 0.7 NNW 41 Old Route 101 - East 0.3 ** E 44 Fallbrook Fire Station 17.7 E 46 San Onofre State Beach Park 1.0 SE 47 Camp Las Flores - MCB 8.6 SE

Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint as described in the ODCM Rev. 4.

Direction determined from degrees true north.

- Distances are within the Units 2/3 CAB/EAB (Controlled Area Boundary/Exclusion Area Boundary)

- - Soil samples are not required by Technical Specifications.

- - - Kelp samples are not required by Technical Specifications.

MCB Marine Corps Base Camp Pendleton PIC Pressurized Ion Chamber 8

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING SAMPLE LOCATIONS TYPE OF SAMPLE AND SAMPLING LOCATION DISTANCE* DIRECTION*

(Omitted sample numbers are due to program modifications) (miles) (Sector)

Direct Radiation (Continued) 49 Camp Chappo - MCB 12.9 ESE 50 Oceanside Fire Station (Control) 15.6 SE 53 San Diego County Operations Center 44.2 SE 54 Escondido Fire Station 31.8 ESE 55 San Onofre State Beach (U1 West) 0.2 ** WNW 56 San Onofre State Beach (U1 West) 0.2 ** W 57 San Onofre State Beach (Unit 2) 0.1 ** SW 58 San Onofre State Beach (Unit 3) 0.1 ** S 59 SONGS Meteorological Tower 0.3 ** WNW 61 Mesa - East Boundary (Adjacent to PIC #4) 0.7 N 62 MCB - Camp Pendleton (Adjacent to PIC #5) 0.7 NNE 63 MCB - Camp Pendleton (Adjacent to PIC #6) 0.6 NE 64 MCB - Camp Pendleton (Adjacent to PIC #7) 0.6 ENE 65 MCB - Camp Pendleton (Adjacent to PIC #8) 0.7 E 66 San Onofre State Beach (Adjacent to PIC #9) 0.6 ESE 67 Former SONGS Evaporation Pond (Adjacent to PIC #2) 0.6 NW 68 Range 210C - MCB 4.4 ENE 73 South Yard Facility 0.4 ** ESE 74 Oceanside City Hall (Backup Control) 15.6 SE 75 Gate 25 MCB 4.6 SE 76 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

Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint as described in the ODCM Rev. 4.

Direction determined from degrees true north.

- Distances are within the Units 2/3 CAB/EAB (Controlled Area Boundary/Exclusion Area Boundary)

- - Soil samples are not required by Technical Specifications.

- - - Kelp samples are not required by Technical Specifications.

MCB Marine Corps Base Camp Pendleton PIC Pressurized Ion Chamber 9

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING SAMPLE LOCATIONS TYPE OF SAMPLE AND SAMPLING LOCATION DISTANCE* DIRECTION*

(Omitted sample numbers are due to program modifications) (miles) (Sector)

Airborne 1 City of San Clemente (City Hall) 5.1 NW 7 AWS Roof 0.18 ** 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 Soil Samples ***

1 Camp San Onofre 2.8 NE 2 Old Route 101 - East Southeast 3.0 ESE 3 Basilone Road / I-5 Freeway Off ramp 2.0 NW 5 Former Visitors Center 0.4 ** NW 7 Prince of Peace Abbey (Control) 15 SE Ocean Water A Station Discharge Outfall - Unit 1 0.6 SW B Outfall - Unit 2 1.5 SW C Outfall - Unit 3 1.2 SSW D Newport Beach (Control) 30.0 NW Drinking Water 4 Camp Pendleton Drinking Water Reservoir 2.0 NW 5 Oceanside City Hall (Control) 15.6 SE

Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint as described in the ODCM Rev. 4.

Direction determined from degrees true north.

- Distances are within the Units 2/3 CAB/EAB (Controlled Area Boundary/Exclusion Area Boundary)

- - Soil samples are not required by Technical Specifications.

- - - Kelp samples are not required by Technical Specifications.

MCB Marine Corps Base Camp Pendleton PIC Pressurized Ion Chamber 10

TABLE A-1 RADIOLOGICAL ENVIRONMENTAL MONITORING SAMPLE LOCATIONS TYPE OF SAMPLE AND SAMPLING LOCATION DISTANCE* DIRECTION*

(Omitted sample numbers are due to program modifications) (miles) (Sector)

Shoreline Sediment (Beach Sand) 1 San Onofre State Beach (SE) 0.6 SE 2 San Onofre Surfing Beach 0.8 WNW 3 San Onofre State Beach (SE) 3.5 SE 4 Newport Beach North End (Control) 29.2 NW Local Crops 2 Oceanside (Control) 15-25 SE to ESE 6 SONGS Garden 0.4 NNW Non-Migratory Marine Animals A Unit 1 Outfall 0.9 WSW B Units 2/3 Outfall 1.5 SSW C Laguna Beach (Control) 15 to 150 WNW to NW Kelp ****

A San Onofre Kelp Bed 1.5 S B San Mateo Kelp Bed 3.8 WNW C Barn Kelp Bed 6.3 SSE E Salt Creek (Control) 11 to 13 WNW to NW Ocean Bottom Sediments 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) 17-19 NW F SONGS Upcoast 0.9 WSW

Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint as described in the ODCM Rev. 4.

Direction determined from degrees true north.

- Distances are within the Units 2/3 CAB/EAB (Controlled Area Boundary/Exclusion Area Boundary)

- - Soil samples are not required by Technical Specifications.

- - - Kelp samples are not required by Technical Specifications.

MCB Marine Corps Base Camp Pendleton PIC Pressurized Ion Chamber 11

TABLE A-2 SECTOR AND DIRECTION DESIGNATION FOR REMP SAMPLE LOCATION MAP DEGREES TRUE NORTH NOMENCLATURE FROM SONGS 2 AND 3 MIDPOINT Sector Center Sector 22.50 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 12

EL CA MIN OR Sector A E AL Sector R N

TLD 8 P BE A CH CL UB

§

¨ RD 5 Sector Q NW NNW Sector B NNE Air Sampler 11 TLD 61 P

& TLD 40 P

¢ P TLD 62 Sector C NE PACIFIC Sector P OCEAN WNW SAN ONOFRE STATE BEACH Air Sampler 12 Crop Sample 6 P TLD 63 P

¢& TLD 67 Shoreline Sediment Sample 2 G P

¢ Soil Sample 5 Sector D Air Sampler 10

& TLD 10 XP TLD 11 ENE P TLD 64 1-mile radius TLD 59 P ¢ Air Sampler 7 Figure 5-1 Sector N TLD 55 P P TLD 41 Sector E San Onofre REMP W TLD 56 P One-Mile Radius P TLD 12 Air Sampler 13 E TLD 57 P & TLD 65 P

¢ TLD 58 P Units 2/3 Midpoint P PTLD 73 TLD 15

¢ Air P TLD 16 Crop TLD 13 P Air Sampler 9

[

Non-Migratory Marine Animals (NMMA) P

¢ & TLD 66 NMMA Sample A [ !

< OBS Sample F Sector F

< Ocean Bottom Sediment (OBS)

ESE m Ocean Water Sector M Shoreline G m Ocean Water Sample A Sediment G Shoreline Sediment WSW Sample 1 X Soil P TLD Freeway TLD 46 Major Road Sector L P Local Street SW Sector G Railroad SE

< OBS Sample B SAN ONOFRE 0.25

Ü 0 0.25 Sector K STATE BEACH Sector H Miles SSW SSE File Name: 2011AREOR_Figure5-1_11x8.mxd Sector J Path:

Date:

\SONGS\AREOR\MXD\AREOR2011 03/07/2012 S Reproduced with permission granted by THOMAS BROS MAPS

© Thomas Bros. Maps. All rights reserved. m Ocean Water Sample C Features depicted herein are planning level accuracy, and intended for informational purposes only. Distances and locations may be distorted at this scale. Always consult with the proper

< OBS Sample D legal documents or agencies regarding such features.

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m Ocean Water Sample B 13

A PAL AVD PE SELDEN W CL CL DL PP Y RA ER L HO TIA A N WA IS

) Kelp Sample B LO L L A TORR RD L

TAB C LEN PULLER EY LN N ES R PL MA IANA CA SE ERSK Sector A CLCL AR Y ON EYE INE D RS R TE R LN Sector R N PE Drinking Water 4

² S CH NNW ST RZA GA RO PKE TLD 34 DE TLD 22 P C Y CT LA R AV Sector B PIPE GL SAND LONGSPUR DR NNE Soil Sample 3 X AN IM Sector C NE Sector Q NW PACIFIC TLD 8 P BE AC H CL Air Sampler 11 TLD 61 OCEAN UB & TLD 40 Sector P RD P

¢ P WNW P TLD 62 Sector D SAN ONOFRE STATE BEACH ENE Air Sampler 12 Shoreline Sediment Sample 2

& TLD 67 P

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APPENDIX B

SUMMARY

, RESULTS, AND DISCUSSIONS OF 2011 ENVIRONMENTAL DATA 18

SUMMARY

To assess the changes or trends in the radioactivity level in the environment over the past year, the data from January 2011 to December 2011 were evaluated. The 2011 REMP data were evaluated according to the criteria described in NUREG/CR-4007 and with the methodology described by Currie (1968).* Excluding data attributable to factors external to SONGS, the REMP data above the critical level (1.64 times one sigma) for selected radionuclides were reduced and tabulated in the Statistical Summary of REMP Data in accordance with the format specified in Reg. Guide 4.8. The 2011 SONGS REMP database, when examined in accordance with the Currie data reduction protocol, leads to the conclusion that SONGS had no statistically significant radiological environmental impact. A summary of the type and number of REMP samples obtained in 2011 appears in Table B-3.

The exceptions, summarized in Table B-2 and in Table B-4, include isotopically analyzed samples with station related activity reported and confirmed above the a posteriori MDC. The analysis results listed in Tables B-2 and B-4 are attributable to sources external to SONGS (fallout from the nuclear accident at the Fukushima Daiichi Nuclear Power Station, residual fallout from legacy atmospheric nuclear weapons testing, residual fallout from Chernobyl, and discharge of medically administered I-131 from the San Juan Sewage Plant outfall). All of the 2011 REMP sample results with detectable licensed radionuclides have known sources external to SONGS. The radionuclides included in Table B-2 include I-131 in kelp (attributable to medically administered I-131 discharged in sewerage from the San Juan outfall), Cs-137 in soil (attributable to residual nuclear weapons testing fallout and to Fukushima accident), Sr-90 in deer bone (attributable to residual nuclear weapons testing). Plant radionuclides directly attributable to the Fukushima Daiichi Nuclear Power Station accident are included in Table B-4. 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. The data strongly suggest that the low level Cs-137 in certain soil samples is due to background concentrations of fallout from nuclear weapons testing and from Chernobyl. We conclude that the low level Cs-137 in soil is not due to the operation of SONGS. I-131 is a medically administered radionuclide which is often detected in sewage plant outfalls. The I-131 detected in the kelp samples is attributable to sewage plant discharges external to SONGS. However the elevated I-131 activity in kelp detected during April 2011 may be partially attributable to fallout from the Fukushima accident. We conclude that SONGS had a negligible radiological environmental impact during 2011.

Historical trending of data near and below the detection limits is necessarily limited. The concentration of radionuclides in the environs of SONGS has trended downward since the early to mid-1980s. In the past decade only a few REMP analysis results have been above the detection limit. These isotopes are detected in control as well as indicator locations and there are known sources for these radionuclides external to SONGS. The overall trend of the REMP data at SONGS is de minimis levels of anthropogenic radioactivity with occasional samples showing radioactivity above the a posteriori MDC.

L. Currie. 1968 Limits for the Qualitative Detection and Quantitative Determination - Application to Radiochemistry, Analytical Chemistry, vol. 40 pp. 586-593 19

RESULTS AND DISCUSSIONS OF 2011 ENVIRONMENTAL DATA A. Direct Radiation Calcium sulfate (CaSO4) Thermoluminescent Dosimeters (TLDs) were placed at 49 locations and analyzed quarterly per ANSI-N545 standards. For each TLD location outside the exclusion area boundary a baseline value was computed using ten years of TLD data (2001 through 2010). The baseline is used to determine if radiation levels above the Lower Limit of Detection (LLD) for this media (5 mR per standard quarter and 10 mR per year) were observed during 2011.

TLDs located greater than five miles from SONGS are considered control TLDs. The indicator locations are selected as inner and outer rings as required by the ODCM. Additional TLDs are placed at locations of interest such as schools and hospitals. All 2011 control location TLD readings were LLD and all 2011 indicator location readings outside the EAB (Exclusion Area Boundary) were LLD.

The data indicate detectable direct radiation measurements in the immediate vicinity of SONGS.

However, the hypothetical maximum associated exposure to a member of the general public, adjusted for occupancy, is less than 1 mR per year as measured by this sample media. TLD station

13 had the highest measured REMP TLD annual baseline adjusted exposure in 2011. The occupancy adjusted exposure for #13 is less than 1 mR per year. Refer to Table B-1 for a summary of all 2011 SONGS REMP TLD data.

Figures 2A and 2B compare environmental radiation levels of indicator and control locations for the operational year 2011 and for previous years. These figures show the close correlation between the control and indicator location TLD exposure data.

Six laboratory control TLDs were analyzed quarterly to compensate for transit dose. A fader 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). All of the neutron TLD data in 2011 was less than detectable.

20

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 monitoring locations. 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 stations 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 2011 TLD Data Table. 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 baseline environmental exposure analysis of the 2001 through 2010 environmental TLD results included an assessment of the standard deviation of the quarterly results at each location. This is an appropriate methodology to determine the ability to detect radiation exposure above natural background. The highest value of three standard deviations for all of the quarterly measurements was 4.8 mR and the highest value was 9.7 mR for the annual results, providing justification for a priori LLDs of 5 mR per quarter and 10 mR per year. The quarterly and annual results expressed in the 2011 Table B-1 as values of positive exposure above natural background or as a notation of

<LLD if the background is not exceeded.

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 (storage and transport of radioactive materials) that occurred during the baseline calculation study period. The average of the non-EAB stations close to the beach was approximately 15.0 mR per quarter. A value of 15.0 mR 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. A current value of baseline / background value of 15.0 mR 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.

21

TABLE B-1 2011 TLD Data Table B-1 Baseline / Background corrected REMP TLD data Baseline Adjusted 2011 Baseline 2011 Quarterly Results (mR) Annual Dist. Quarterly 2011 Quarterly Results (mR) Annual Adjusted Baseline

Location Miles Baseline 1 2 3 4 1 2 3 4 Total (mR) 2011 Total 1 City of San Clemente 5.7 17.5 18.1 16.8 16.7 17.3 <LLD <LLD <LLD <LLD 69.9 68.9 <LLD 2 Camp San Mateo - MCB 3.5 18.6 18.2 17.7 18.5 17.8 <LLD <LLD <LLD <LLD 74.4 72.1 <LLD 3 Camp San Onofre - MCB 2.6 16.4 16.4 15.4 16.5 15.5 <LLD <LLD <LLD <LLD 65.5 63.8 <LLD 4 Camp Horno - MCB 4.5 18.1 17.6 17.5 17.2 17.2 <LLD <LLD <LLD <LLD 72.3 69.5 <LLD 6 Old Route 101 (ESE) 3.0 11.4 12.0 10.6 11.3 10.6 <LLD <LLD <LLD <LLD 45.6 44.6 <LLD 8 Noncommissioned Officers' Beach Club 1.4 15.4 16.2 15.9 16.1 17.0 <LLD <LLD <LLD <LLD 61.8 65.1 <LLD 10 Bluff (Adjacent to PIC #1) 0.7 16.4 18.1 15.4 16.0 16.2 <LLD <LLD <LLD <LLD 65.7 65.7 <LLD 19 San Clemente Highlands 5.0 17.8 18.7 17.5 17.7 17.9 <LLD <LLD <LLD <LLD 71.3 71.7 <LLD 22 Former US Coast Guard Station 2.7 17.9 18.7 16.5 17.7 17.9 <LLD <LLD <LLD <LLD 71.7 70.8 <LLD 23 SDG&E Service Center Yard 8.1 15.8 16.3 14.5 15.0 15.1 <LLD <LLD <LLD <LLD 63.1 60.8 <LLD 31 Aurora Park - Mission Viejo (Control) 18.6 18.5 18.9 17.5 18.6 19.0 <LLD <LLD <LLD <LLD 74.1 74.0 <LLD 33 Camp Talega - MCB 5.7 18.9 19.0 17.6 18.9 18.4 <LLD <LLD <LLD <LLD 75.4 73.9 <LLD 34 San Onofre School - MCB 1.9 16.2 16.7 14.3 15.4 15.8 <LLD <LLD <LLD <LLD 64.7 62.1 <LLD 35 Range 312 - MCB 4.7 16.9 17.7 16.5 16.7 16.4 <LLD <LLD <LLD <LLD 67.5 67.2 <LLD 36 Range 208C - MCB 4.2 19.5 18.3 18.6 18.8 18.0 <LLD <LLD <LLD <LLD 77.8 73.6 <LLD 38 San Onofre State Beach Park 3.3 14.3 15.0 13.7 13.1 13.6 <LLD <LLD <LLD <LLD 57.2 55.4 <LLD 40 SCE Training Center - Mesa (Adjacent to PIC #3) 0.7 17.1 19.1 17.0 16.3 16.9 <LLD <LLD <LLD <LLD 68.4 69.2 <LLD 44 Fallbrook Fire Station 17.7 14.0 15.9 15.0 13.4 13.9 <LLD <LLD <LLD <LLD 56.0 58.2 <LLD 46 San Onofre State Beach Park 0.9 12.2 12.4 11.4 12.0 11.5 <LLD <LLD <LLD <LLD 48.7 47.4 <LLD 47 Camp Las Flores - MCB 8.6 13.3 13.7 14.2 12.0 12.5 <LLD <LLD <LLD <LLD 53.1 52.3 <LLD 49 Camp Chappo - MCB 12.8 14.2 15.7 14.3 13.1 14.5 <LLD <LLD <LLD <LLD 56.9 57.6 <LLD 50 Oceanside Fire Station (Control) 15.6 16.6 17.1 16.5 16.5 16.5 <LLD <LLD <LLD <LLD 66.3 66.6 <LLD 53 San Diego County Operations Center 44.3 18.2 17.7 16.8 16.0 17.8 <LLD <LLD <LLD <LLD 72.9 68.3 <LLD 54 Escondido Fire Station 31.8 16.1 17.4 17.7 16.4 16.6 <LLD <LLD <LLD <LLD 64.4 68.1 <LLD 61 Mesa - East Boundary (PIC #4) 0.6 15.4 15.5 12.8 14.1 14.2 <LLD <LLD <LLD < LLD 61.7 56.6 <LLD 62 Camp Pendleton (PIC #5) 0.6 13.2 13.2 11.9 12.6 11.9 <LLD <LLD <LLD <LLD 50.4 49.7 <LLD 63 Camp Pendleton (PIC #6) 0.6 13.9 14.0 13.0 13.0 13.0 <LLD <LLD <LLD <LLD 55.5 53.1 <LLD 22

TABLE B-1 2011 TLD Data Table B-1 Baseline / Background corrected REMP TLD data Baseline Adjusted 2011 Baseline 2011 Quarterly Results (mR) Annual Dist. Quarterly 2011 Quarterly Results (mR) Annual Adjusted Baseline

Location Miles Baseline 1 2 3 4 1 2 3 4 Total (mR) 2011 Total 64 Camp Pendleton (PIC #7) 0.6 15.0 15.1 14.6 14.2 14.7 <LLD <LLD <LLD <LLD 60.1 58.6 <LLD 65 Camp Pendleton (PIC #8) 0.7 13.4 14.2 13.1 13.1 12.6 <LLD <LLD <LLD <LLD 53.8 52.9 <LLD 66 San Onofre State Beach (PIC #9) 0.6 14.0 14.3 12.6 13.6 13.1 <LLD <LLD <LLD <LLD 55.6 53.7 <LLD 67 Former SONGS Evaporation Pond (PIC #2) 0.6 16.9 17.7 14.9 16.1 15.3 <LLD <LLD <LLD <LLD 67.7 64.0 <LLD 68 Range 210C - MCB 4.3 15.0 15.6 14.9 15.3 14.1 <LLD <LLD <LLD <LLD 60.2 59.9 <LLD 74 Oceanside City Hall (Backup Control) 15.6 13.3 14.2 12.7 13.5 12.8 <LLD <LLD <LLD <LLD 53.4 53.1 <LLD 75 Gate 25 MCB 4.6 15.9 16.1 14.7 15.8 15.0 <LLD <LLD <LLD <LLD 63.6 61.6 <LLD 76 El Camino Real Mobil Station 4.6 17.3 18.4 16.5 16.9 17.3 <LLD <LLD <LLD <LLD 69.4 69.0 <LLD 77 Area 62 Heavy Lift Pad 4.3 19.2 19.3 18.2 18.8 17.2 <LLD <LLD <LLD <LLD 76.9 73.4 <LLD 78 Horno Canyon 4.4 11.1 11.6 10.5 11.4 10.3 <LLD <LLD <LLD <LLD 44.6 43.8 <LLD TLD within the site boundary (Baseline has been estimated) 11 Former Visitors' Center 0.4* 15.0 16.6 14.8 15.9 14.7 <LLD <LLD <LLD <LLD 60.0 61.9 <LLD 12 South Edge of Switchyard 0.2* 15.0 17.2 15.5 15.4 16.3 <LLD <LLD <LLD <LLD 60.0 64.4 <LLD 13 Southeast Site Boundary (Bluff) 0.4* 15.0 26.9 29.5 30.1 21.7 11.9 14.5 15.1 6.7 60.0 108.1 48.1 15 Southeast Site Boundary (Office Bldg) 0.1* 15.0 22.5 18.3 20.3 20.5 7.5 <LLD 5.3 5.5 60.0 81.6 21.6 16 East Southeast Site Boundary 0.4* 15.0 22.3 17.5 19.3 17.8 7.3 <LLD <LLD <LLD 60.0 76.8 16.8 41 Old Route 101 - East 0.3* 15.0 15.8 15.1 15.8 15.1 <LLD <LLD <LLD <LLD 60.0 61.7 <LLD 55 San Onofre State Beach (U1 West) 0.2* 15.0 21.8 20.9 21.4 20.5 6.8 5.9 6.4 5.5 60.0 84.5 24.5 56 San Onofre State Beach (U1 West) 0.2* 15.0 21.4 18.5 18.8 20.9 6.4 <LLD <LLD 5.9 60.0 79.6 19.6 57 San Onofre State Beach (Unit 2) 0.1* 15.0 21.5 16.7 18.2 18.6 6.5 <LLD <LLD <LLD 60.0 75.0 15.0 58 San Onofre State Beach (Unit 3) 0.1* 15.0 20.9 17.5 18.3 17.9 5.9 <LLD <LLD <LLD 60.0 74.7 14.7 59 SONGS Meteorological Tower 0.3* 15.0 22.6 19.0 20.1 18.9 7.6 <LLD 5.1 <LLD 60.0 80.5 20.5 73 South Yard Facility 0.4* 15.0 25.2 22.2 21.6 21.4 10.2 7.2 6.6 6.4 60.0 90.3 30.3

Within Exclusion Area Boundary

Station is within the EAB (Exclusion Area Boundary). The baseline has been estimated to be 15.0 within the EAB.

23

Quality Control Duplicate Direct Radiation Samples Duplicate QC TLDs were installed adjacent to TLD #66 and TLD #67. Refer to 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 deployed in the vicinity of the ISFSI. Data from these TLDs have not been included in the statistical summary of REMP data since these TLDs are not required by the ODCM. The ISFSI data are listed and discussed in Appendix J.

B. Airborne Particulate, Iodine, and Composite Isotopic Analyses Air particulate samples were collected on a weekly basis from seven indicator locations and from two control locations. The samples were analyzed for gross beta activity, I-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, but beta decay gives a continuous energy spectrum rather than the discrete energy lines or peaks associated with gamma radiation. Gross beta measurements only indicate whether the sample contains normal or abnormal concentrations of beta-emitting radionuclides and does not identify specific radionuclides. Gross beta measurement data serves as a screening tool to determine if further analysis is required.

All gross beta activity analysis results were above the a posteriori MDC. The concentration of gross beta activity in the samples collected from the indicator locations ranged from 0.0131 to 0.200 pCi/m3, averaging 0.0426 pCi/m3 of air. The concentrations of gross beta activity in the samples from the control locations ranged from 0.0186 to 0.170 pCi/m3, averaging 0.0445 pCi/m3 of air.

Figure 3D shows the close correlation between indicator and control gross beta activity level during 2011 at different locations.

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 #15). The results showed that indicator locations maximum gross beta activity in air in 2011 was 0.20 pCi/m3 and the 2010 control location average was 0.0367 pCi/m3. No action was required by the ODCM. However, additional weekly gamma isotopic analyses were performed on selected air particulate media to monitor the trans-Pacific transport of releases from the Fukushima Dai-Ichi accident.

Airborne transportation of releases from the Fukushima Dai-Ichi releases resulted in detectable concentrations of I-131 during the weeks immediately following the accident. The results are listed in Table B-4. The remainder of the samples analyzed for I-131 were less than the a posteriori MDC.

24

Quarterly composite gamma spectral analyses yielded naturally occurring beryllium-7 (Be-7) above the a posteriori MDC. Fallout from the Fukushima accident was also detected during 2011. See Table B-4.

We conclude that the operation of SONGS had no impact on the environment as measured by this sample medium.

C. Ocean Water Monthly ocean water samples were collected from three indicator locations in the vicinity of each station discharge and from the control location at Newport Beach. The samples were analyzed for naturally-occurring and SONGS-related gamma-emitting radionuclides. Quarterly composite ocean water samples were analyzed for tritium according to ODCM requirements.

Throughout 2011, 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 (DPH) split sample program.

During 2011 all REMP ocean water sample results for plant related radionuclides were below the a priori LLD, and below the lower count specific a posteriori MDC. The DPH monthly ocean water tritium sample results were all below the DPH reported Minimum Detectable Activity (MDA) for tritium and plant related radionuclides.

Naturally occurring potassium-40 (K-40) was detected in all ocean water samples obtained in 2011.

Excluding naturally occurring radionuclides, the 2011 ocean water gamma isotopic database is statistically indistinguishable from a database with no detectable activity.

The data indicate that the operation of SONGS had a negligible impact on the environment as measured by this sample medium.

D. Drinking Water In 2011, drinking water samples were collected on a monthly basis 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 that could be affected by the release of liquid effluent at SONGS.

No station related radionuclides were detected in drinking water during 2011. The gross beta activity is due to naturally occurring radionuclides. The drinking water gamma isotopic database is statistically indistinguishable from a database with zero activity. The operation of SONGS had no impact on this sample medium.

E. Shoreline Sediment (Beach Sand)

Beach sand was collected semiannually in 2011 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. Naturally occurring K-40 and thorium-228 (Th-228) were detected in all samples. No plant related radionuclides were reported above the a posteriori MDC.

The operation of SONGS had no impact on the environment as measured by this sample medium.

25

F. Ocean Bottom Sediments Ten ocean bottom sediments were collected in the vicinity of each of the three SONGS discharge locations and at the Newport Beach control location. The samples were analyzed by gamma-spectral analysis for naturally-occurring and station-related radionuclides. Naturally occurring K-40 and Th-228 were detected in ocean bottom sediment samples collected during 2011.

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 2011, all of the conduit sample analysis results were below the MDC for station related radionuclides.

We conclude that the operation of SONGS had no impact on the environment as measured by this sample medium.

G. Non-Migratory Marine Species (Flesh)

Species of adult fish, crustacea and mollusks, were collected on a semi-annual basis at the SONGS Unit l outfall, the SONGS Units 2/3 outfall and from Laguna Beach control location. The flesh portion of each sample type was analyzed for gamma-emitting station-related and naturally occurring radionuclides. The results were subsequently reported to SCE 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 above the a posteriori MDC.

Naturally-occurring K-40 was detected in most marine species samples collected during 2011. No plant related isotopes were reported above the a posteriori MDC. The operation of SONGS had no impact on the environment as measured by this sample medium. The potential dose to members of the public from consumption of marine species near SONGS is negligible.

H. Local Crops Fleshy and leafy crops were collected semiannually in 2011 from the SONGS garden and from the control location 21 miles from SONGS Units 2/3 midpoint in sector F. Licensed material resulting from the trans-Pacific transport of airborne radioactivity due to the accident at the Fukushima Dai-Ichi plant was detected in the March 2011 indicator and control local crop samples. The control sample was purchased from a vegetable stand and the product was being sprayed with a misting device, potentially washing radioactivity from the samples and potentially causing a possible reduction is measured activity. In addition the samples were collected during the period of time when California was experiencing fallout from the Fukushima accident and the total integration period for the control local crop samples is unknown. The most salient radiological fact regarding the March 2011 local crop sample results is that licensed material was detected in both the control and in the indicator samples. No plant related radioactivity was detected in the June 2011 and December 2011 samples. Refer to Table B-4. It is concluded that in 2011 SONGS had no measurable impact on this sample medium.

I. Soil To determine if there is evidence of a build-up of radionuclides in the land near SONGS, indicator soil samples were collected from the East Site Boundary (Former Visitor's center), Old Route 101, 26

Basilone Road, and Camp San Onofre. A control sample was obtained from 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 samples were analyzed for naturally-occurring and SONGS-related radionuclides using gamma spectral analysis. All 2011 soil samples yielded naturally occurring K-40 and Th-228. Cs-137 was detected in two indicator samples, as well as the control sample. Cs-137 in environmental sediment samples is attributable to residual nuclear weapons testing fallout. The concentrations of Cs-137 in soil has been elevated due to releases and the trans-Pacific transport of airborne radioactivity from the Fukushima Dai-Ichi accident. Refer to Table B-2.

Cs-137 and strontium-90 (Sr-90) were detected in soil profile analyses conducted in previous years.

These radionuclides are mostly due 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 the control locations in previous years supports the conclusion that the major source of this radionuclide is fallout deposition. During 2011, the operation of SONGS did not have a measurable effect on the environment as measured by this sample medium.

J. Kelp Sampling Kelp was collected in April and October of 2011 from the San Onofre kelp bed, San Mateo kelp bed, Barn kelp bed, the Dana Point Kelp Bed, the Capistrano Beach Reef, the San Clemente Pier, the Wheeler North Artificial Reef, and from the Salt Creek control location. Upon collection, the samples were analyzed by gamma-spectral analysis for naturally-occurring and Station-related radionuclides. The radionuclides detected in 2011 included K-40 and I-131. K-40 is naturally occurring and not related to the operation of SONGS. The elevated I-131 detected in April 2011 may be attributable to the transport of airborne radioactivity from the Fukushima accident. Refer to Table B-2.

I-131 has been detected at indicator and control locations in previous years. The northern control locations are too far away and in the predominantly upstream current direction for the I-131 activity to be attributable to SONGS. The control kelp sample stations near the San Juan Sewage Plant outfall have consistently yielded the highest I-131 activity. The San Juan outfall has consistently yielded I-131 at detectable levels. The I-131 data ocean water samples near SONGS have been consistently been less than detectable. Refer to Table B-2 for a complete list of the 2011 kelp samples with detectable I-131activity and for the 2011 results from the 2011 San Juan Sewage Plant effluent sample I-131 analyses. I-131 in kelp data, graphically presented in Figure 4, shows a relatively close correlation between indicator and control locations over a 25 year period - further supporting the assessment that the likely source for this radionuclide is external to SONGS.

Refer to Figure 5-6 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 I-131 detected in kelp is attributable to medically administered I-131 discharged through the San Juan Sewage Plant outfall and not to the operation of SONGS.

27

K. Deer Sampling Deer meat and bone samples were collected in 2011 because locally harvested deer meat is a potential pathway to humans. Road kill deer were sampled in accordance with a California Fish and Game scientific take permit issued to the Camp Pendleton Game Warden. The 2011 analysis results indicate, the March 2011 accident at the Fukushima Dai-Ichi plant, from the Fukushima accident has affected this sample media. Refer to Table B-4 for the analysis results. The deer meat and bone gamma isotopic data indicate that effects from the operation of SONGS were not detected in this sample media.

L. Correlation of Effluent Concentrations to Concentrations in the Environment In accordance with 10 CFR 50 Appendix I, IV.b.2 data on measurable levels of radiation and radioactive 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.

The REMP soil Cs-137 levels in the control and indicator samples are statistically equal which leads to the conclusion that Cs-137 in soil is attributable to residual fallout from external anthropogenic factors such as nuclear weapons testing, the March 2011 accident at the Fukushima Dai-Ichi plant and Chernobyl. The predicted concentration for Cs-137 in soil (based on effluent data reported in the 2010 SONGS Annual Radioactive Effluent Release Report) is about 2 to 3 orders of magnitude lower than the measured concentration of Cs-137 in soil. The effluent based correlation calculation indicates that even if there were no Cs-137 in soil from sources external to SONGS, the Cs-137 concentration in soil attributable to the operation of SONGS would be undetectable and the resultant doses to individuals would be negligible.

Data from 2011 continue to support the historical conclusion that the measured concentration of I-131 in kelp is not increasing near SONGS, and is not statistically higher around SONGS than it is at the control locations. I-131 in kelp is due to the release of medical administrations to the ocean from sewage treatment facilities and to the transport of airborne materials released from the Fukushima Dai-Ichi accident. The data are consistent with the low levels of radio-iodine released from SONGS during 2011. The effluent based correlation calculation indicates that I-131 activity in kelp attributable to the operation of SONGS would be undetectable and the resultant doses to individuals would be negligible.

Air particulate gross beta data increased briefly in the immediate aftermath of the Fukushima accident. Accordingly, a sample plan was developed and executed to analyze the weekly air particulate filter media for gamma emitters . The data from air samplers close to SONGS, the data from air samplers further away, and the data from the Oceanside control sampler are statistically equal. During the weeks immediately after the Fukushima accident I-131 was detected in the air sampler iodine cartridges at both the control and the indicator locations at substantially similar levels.

Most of the control and indicator samples of deer meat collected during 2011 yield greater than detectable Cs-134 and Cs-137. The Cs-134 to Cs-137 ratios for deer meat are substantially similar to the air sampler Cs-134 to Cs-137 ratios. The effluent based evaluation indicates that the Cs-134 and Cs-137 radioactivity in deer meat would be less than detectable if the data were attributable to SONGS and the resultant dose to individuals would be negligible. The atypical detection of these radionuclides in both indicator and control samples is credibly attributed to the trans-Pacific transport of airborne releases from Dai-Ichi, Fukushima following the March 11, 2011 Tohoku earthquake and is not related to the operation of San Onofre. The Sr-90 detected in one deer bone sample is consistent with activity that would be expected from legacy nuclear weapons fallout.

28

E - Salt Creek Bed"

) SE LVA RD E - Salt Creek Bed Y NT S CM OU RE VE EC G

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BASIL ONE RD ENE B - San Mateo Kelp Bed OLD 29 B - San Mateo Kelp Bed

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April 2011 Sector M WSW A - San Onofre Kelp Bed #

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) October 2011 A - San Onofre Kelp Bed ESE Units 2/3 Midpoint

[ SanJuanOutfall Diffusers Sector L SW

µ Sector G SE Sector K Sector H 1 0 1 2 SSW Sector J SSE Miles S

File Name: 2011AREOR_Figure5-6_11x8.mxd Path: ~SONGS\AREOR\MXD\AREOR2011 Date: 03/07/2012 Features depicted herein are planning level Pacific Ocean accuracy, and intended for informational purposes only. Distances and locations may be distorted at this scale. Always consult with the proper legal documents or agencies regarding such features.

29 C - Barn Kelp Bed "

)

TABLE B-2 Summary of Nuclear Power Plant related Gamma Isotopic Analyses confirmed above MDC Sample Media & location Radionuclide Sample Value MDC (a posteriori)

Aquatic Kelp San Onofre Kelp Bed I-131 (384 +/- 54) E-3 pCi/g 31 E-3 pCi/g Station A 18APR11 Aquatic Kelp San Mateo Kelp Bed I-131 (392 +/- 49) E-3 pCi/g 22 E-3 pCi/g Station B 18APR11 Aquatic Kelp Salt Creek Bed I-131 (233 +/- 37) E-3 pCi/g 23 E-3 pCi/g Station E 18APR11 Aquatic Kelp Dana Point Kelp Bed I-131 (508 +/- 55) E-3 pCi/g 21 E-3 pCi/g Station F 18APR11 Aquatic Kelp Capistrano Beach Reef I-131 (472 +/- 55) E-3 pCi/g 23 E-3 pCi/g Station G 18APR11 Aquatic Kelp San Clemente Pier I-131 (333 +/- 42) E-3 pCi/g 21 E-3 pCi/g Station H 18APR11 Aquatic Kelp Wheeler North Artificial Reef I-131 (316 +/- 41) E-3 pCi/g 20 E-3 pCi/g Station I 18APR11 Aquatic Kelp San Onofre Kelp Bed I-131 (36 +/- 15) E-3 pCi/g 12 E-3 pCi/g Station A 17OCT11 Aquatic Kelp San Mateo Kelp Bed I-131 (36 +/- 13) E-3 pCi/g 14 E-3 pCi/g Station B 17OCT11 Aquatic Kelp Barn Kelp Bed I-131 (28 +/- 15) E-3 pCi/g 13 E-3 pCi/g Station C 17OCT11 Aquatic Kelp Salt Creek Bed I-131 (49 +/- 12) E-3 pCi/g 11 E-3 pCi/g Station E 17OCT11 Aquatic Kelp Dana Point Kelp Bed I-131 (57 +/- 17) E-3 pCi/g 15 E-3 pCi/g Station F 17OCT11 Aquatic Kelp Capistrano Beach Reef I-131 (100 +/- 21) E-3 pCi/g 14 E-3 pCi/g Station G 17OCT11 30

TABLE B-2 Summary of Nuclear Power Plant related Gamma Isotopic Analyses confirmed above MDC Sample Media & location Radionuclide Sample Value MDC (a posteriori)

Aquatic Kelp San Clemente Pier I-131 (22 +/- 16) E-3 pCi/g 17 E-3 pCi/g Station H 17OCT11 Aquatic Kelp Wheeler North Artificial Reef I-131 (22 +/- 14) E-3 pCi/g 16 E-3 pCi/g Station I 17OCT11 San Juan Sewage I-131 (20800 +/- 4220) E-3 pCi/l 3170 E-3 pCi/l Plant Discharge 27OCT11 San Juan Sewage I-131 (7250 +/- 2780) E-3 pCi/l 3350 E-3 pCi/l Plant Discharge 9NOV11 Soil Camp San Onofre Cs-137 (124 +/- 60) E-3 pCi/g 66 E-3 pCi/g Location # 1 30SEP11 Soil Old El Camino Real Cs-137 (314 +/- 59) E-3 pCi/g 50 E-3 pCi/g Location #2 30SEP11 Soil Prince of Peace Abbey Cs-137 (224 +/- 45) E-3 pCi/g 38 E-3 pCi/g Location #7 30SEP11 Deer Bone Sr-90 (298 +/- 83) E-3 pCi/g 175 E-3 pCi/g Control Location 31AUG11 31

TABLE B-3 REMP SAMPLE ANALYSIS

SUMMARY

FOR 2011 Sampling # of Total # of Medium Analysis Type Frequency Locations Analyses in 2011 1 Direct Radiation Dosimetry Quarterly 49 196 Airborne Particulates Gross Beta Weekly 10 416 Charcoal Cartridge I-131 Weekly 10 416 Airborne Particulates Ge (Li) Scan Quarterly 9 33 Ocean Water Ge (Li) Scan, H-3 Monthly 4 52 Ocean Water H-3 Quarterly 4 16 Drinking Water, Ge (Li) Scan, Monthly 4 31 Unfiltered H-3 4 31 Gross Beta 4 31 Shoreline Sediment Ge (Li) Scan Semi-Annually 4 8 Ocean Bottom Sediment Ge (Li) Scan Semi-Annually 7 14 Marine Species, Flesh Ge (Li) Scan Semi-Annually 3 24 Crops Ge (Li) Scan Semi-Annually 2 11 Kelp Ge (Li) Scan Semi-Annually 8 15 Soil Ge (Li) Scan Annually 5 5

1. The total number of analyses listed above includes samples not required by the ODCM, including San Clemente drinking water well samples (collection requested by the City of San Clemente), additional ocean water samples, additional ocean bottom sediment samples, and additional control kelp samples. These samples were not collected for all of 2011 because the San Clemente drinking water wells were not in service for all of 2011. Additional control kelp samples were obtained to track I-131 (iodine-131) activity in kelp attributable to municipal waste water discharges. Therefore, the total number of analyses will not always equal the product of the ODCM specified sample frequency times the total number of ODCM locations. This table does not include the special weekly air particulate gamma isotopic analyses performed to monitor the trans-Pacific transport of airborne radioactivity released from the Fukushima accident. There were a total of ten air particulate stations, including air sampler # 15 (sampled for one week in 2011) and air sampler # 30 (also sampled for one week in 2011 because REMP air sampler # 13 was out of service due to storm damage). Thus the total number of airborne analyses does not equal the frequency times the number of locations.

32

DETECTABLE ACTIVITY ATTRIBUTED TO THE TRANS-PACIFIC TRANSPORT OF AIRBORNE MATERIAL FROM THE FUKUSHIMA DAI-ICHI ACCIDENT 33

TABLE B-4 Date Media Location Analyte Distance/Direction Activity & Units 2 Sigma MDC Analytical Remarks from SONGS 3/22/2011 Airborne particulate filter 7 AWS Roof I-131 0.18 NW 0.0945 pCi/m3 0.0165 0.00803 3/22/2011 Airborne particulate filter 10 Bluff I-131 0.7 WNW 0.0867 pCi/m3 0.015 0.00776 3/22/2011 Airborne particulate filter 11 Mesa EOF I-131 0.7 NNW 0.0844 pCi/m3 0.0154 0.00711 3

3/22/2011 Airborne particulate filter 7 AWS Roof Te-132 0.18 NW 0.0271 pCi/m 0.0153 0.013 3/22/2011 Airborne particulate filter 11 Mesa EOF Te-132 0.7 NNW 0.0366 pCi/m3 0.0134 0.0088 3

3/22/2011 Airborne particulate filter 11 Mesa EOF Cs-134 0.7 NNW 0.0105 pCi/m 0.00685 0.00774 3/29/2011 Airborne particulate filter 1 City of San Clemente (City Hall) I-131 5.1 NW 0.0614 pCi/m3 0.0132 0.00908 3/29/2011 Airborne particulate filter 7 AWS Roof I-131 0.18 NW 0.0622 pCi/m3 0.0141 0.00746 3/29/2011 Airborne particulate filter 9 State Beach Park I-131 0.6 ESE 0.0627 pCi/m3 0.0122 0.00773 3

3/29/2011 Airborne particulate filter 10 Bluff I-131 0.7 WNW 0.068 pCi/m 0.0137 0.00787 3/29/2011 Airborne particulate filter 11 Mesa EOF I-131 0.7 NNW 0. 0553 pCi/m3 0.0111 0.0069 3

3/29/2011 Airborne particulate filter 12 Former SONGS Evaporation I-131 0.6 NW 0. 0605 pCi/m 0.0129 0.0077 Pond 3/29/2011 Airborne particulate filter 13 Marine Corps Base (Camp I-131 0.7 E 0. 074 pCi/m3 0.013 0.00933 Pendleton East) 3/29/2011 Airborne particulate filter 16 San Luis Rey Substation I-131 16.7 SE 0. 0653 pCi/m3 0.0143 0.00725 (CONTROL)1 3/29/2011 Airborne particulate filter 12 Former SONGS Evaporation Te-132 0.6 NW 0. 0184 pCi/m3 0.0112 0.0137 Pond 3/29/2011 Airborne particulate filter 16 San Luis Rey Substation Te-132 16.7 SE 0. 0127 pCi/m3 0.0111 0.012 (CONTROL)1 3/29/2011 Airborne particulate filter 1 City of San Clemente (City Hall) Cs-134 5.1 NW 0. 0216 pCi/m3 0.00819 0.00732 3/29/2011 Airborne particulate filter 7 AWS Roof Cs-134 0.18 NW 0. 00952 pCi/m3 0.00886 0.00669 3

3/29/2011 Airborne particulate filter 9 State Beach Park Cs-134 0.6 ESE 0. 0127 pCi/m 0.00666 0.00698 3/29/2011 Airborne particulate filter 10 Bluff Cs-134 0.7 WNW 0. 015 pCi/m3 0.00995 0.00886 3

3/29/2011 Airborne particulate filter 11 Mesa EOF Cs-134 0.7 NNW 0. 0154 pCi/m 0.00654 0.00436 3/29/2011 Airborne particulate filter 12 Former SONGS Evaporation Cs-134 0.6 NW 0. 0241 pCi/m3 0.0088 0.00762 Pond 3/29/2011 Airborne particulate filter 13 Marine Corps Base (Camp Cs-134 0.7 E 0. 0266 pCi/m3 0.00995 0.00874 Pendleton East) 3/29/2011 Airborne particulate filter 16 San Luis Rey Substation Cs-134 16.7 SE 0. 0124 pCi/m3 0.0061 0.00561 (CONTROL)1 3/29/2011 Airborne particulate filter 1 City of San Clemente (City Hall) Cs-137 5.1 NW 0. 0194 pCi/m3 0.00855 0.00708 3

3/29/2011 Airborne particulate filter 7 AWS Roof Cs-137 0.18 NW 0. 0155 pCi/m 0.00721 0.00546 3/29/2011 Airborne particulate filter 9 State Beach Park Cs-137 0.6 ESE 0. 0167 pCi/m3 0.00633 0.00532 34

TABLE B-4 Date Media Location Analyte Distance/Direction Activity & Units 2 Sigma MDC Analytical Remarks from SONGS 3/29/2011 Airborne particulate filter 10 Bluff Cs-137 0.7 WNW 0. 0243 pCi/m3 0.00802 0.00777 3

3/29/2011 Airborne particulate filter 11 Mesa EOF Cs-137 0.7 NNW 0. 0187 pCi/m 0.00618 0.00601 3/29/2011 Airborne particulate filter 12 Former SONGS Evaporation Cs-137 0.6 NW 0. 019 pCi/m3 0.00787 0.00603 Pond 3/29/2011 Airborne particulate filter 13 Marine Corps Base (Camp Cs-137 0.7 E 0. 0223 pCi/m3 0.00711 0.00709 Pendleton East) 3/29/2011 Airborne particulate filter 16 San Luis Rey Substation Cs-137 16.7 SE 0.0203 pCi/m3 0.00627 0.00439 (CONTROL)1 3/22/2011 Air I-131 cartridge 1 City of San Clemente (City Hall) I-131 5.1 NW 0.928 pCi/m3 0.13 0.0247 3/22/2011 Air I-131 cartridge 7 AWS Roof I-131 0.18 NW 0.783 pCi/m3 0.113 0.0193 3

3/22/2011 Air I-131 cartridge 9 State Beach Park I-131 0.6 ESE 0.843 pCi/m 0.105 0.0343 3

3/22/2011 Air I-131 cartridge 10 Bluff I-131 0.7 WNW 0.711 pCi/m 0.0922 0.0187 3

3/22/2011 Air I-131 cartridge 11 Mesa EOF I-131 0.7 NNW 0.867 pCi/m 0.113 0.0253 3

3/22/2011 Air I-131 cartridge 12 Former SONGS Evaporation I-131 0.6 NW 0.867 pCi/m 0.146 0.0547 Pond 3/22/2011 Air I-131 cartridge 13 Marine Corps Base (Camp I-131 0.7 E 0.876 pCi/m3 0.111 0.0268 Pendleton East) 3/22/2011 Air I-131 cartridge 16 San Luis Rey Substation I-131 16.7 SE 0.804 pCi/m3 0.108 0.0211 (CONTROL)1 3/29/2011 Air I-131 cartridge 1 City of San Clemente (City Hall) I-131 5.1 NW 0.464 pCi/m3 0.0688 0.0113 3

3/29/2011 Air I-131 cartridge 7 AWS Roof I-131 0.18 NW 0.369 pCi/m 0.0666 0.0228 3

3/29/2011 Air I-131 cartridge 9 State Beach Park I-131 0.6 ESE 0.401 pCi/m 0.0687 0.0237 3

3/29/2011 Air I-131 cartridge 10 Bluff I-131 0.7 WNW 0.424 pCi/m 0.0716 0.0277 3

3/29/2011 Air I-131 cartridge 11 Mesa EOF I-131 0.7 NNW 0.431 pCi/m 0.0689 0.022 3/29/2011 Air I-131 cartridge 12 Former SONGS Evaporation I-131 0.6 NW 0.387 pCi/m3 0.0666 0.0163 Pond 3/29/2011 Air I-131 cartridge 13 Marine Corps Base (Camp I-131 0.7 E 0.439 pCi/m3 0.0792 0.0301 Pendleton East) 3/29/2011 Air I-131 cartridge 16 San Luis Rey Substation I-131 16.7 SE 0.458 pCi/m3 0.0751 0.0228 (CONTROL)1 4/5/2011 Air I-131 cartridge 1 City of San Clemente (City Hall) I-131 5.1 NW 0.0919 pCi/m3 0.036 0.02 3

4/5/2011 Air I-131 cartridge 7 AWS Roof I-131 0.18 NW 0.0934 pCi/m 0.0319 0.0126 3

4/5/2011 Air I-131 cartridge 9 State Beach Park I-131 0.6 ESE 0.0655 pCi/m 0.0258 0.0119 35

TABLE B-4 Date Media Location Analyte Distance/Direction Activity & Units 2 Sigma MDC Analytical Remarks from SONGS 4/5/2011 Air I-131 cartridge 10 Bluff I-131 0.7 WNW 0.0526 pCi/m3 0.0243 0.026 4/5/2011 Air I-131 cartridge 11 Mesa EOF I-131 0.7 NNW 0.0903 pCi/m3 0.0404 0.0246 3

4/5/2011 Air I-131 cartridge 12 Former SONGS Evaporation I-131 0.6 NW 0.0506 pCi/m 0.0301 0.0174 Pond 4/5/2011 Air I-131 cartridge 13 Marine Corps Base (Camp I-131 0.7 E 0.0881 pCi/m3 0.028 0.0245 Pendleton East) 4/5/2011 Air I-131 cartridge 16 San Luis Rey Substation I-131 16.7 SE 0.0988 pCi/m3 0.0293 0.0277 (CONTROL)1 4/12/2011 Air I-131 cartridge 1 City of San Clemente (City Hall) I-131 5.1 NW 0.0359 pCi/m3 0.0172 0.0234 3

4/12/2011 Air I-131 cartridge 11 Mesa EOF I-131 0.7 NNW 0.0392 pCi/m 0.0138 0.019 3

3/29/2011 Airborne particulate filter 12 Former SONGS Evaporation Cs-134 0.6 NW 0.00208 pCi/m 0.000716 0.000651 composite Pond 3/29/2011 Airborne particulate filter 16 San Luis Rey Substation Cs-134 16.7 SE 0.00237 pCi/m3 0.000757 0.000629 composite (CONTROL)1 3/29/2011 Airborne particulate filter 1 City of San Clemente (City Hall) Cs-134 5.1 NW 0.00245 pCi/m3 0.000665 0.000612 composite 3/29/2011 Airborne particulate filter 13 Marine Corps Base (Camp Cs-134 0.7 E 0.00283 pCi/m3 0.000962 0.000698 composite Pendleton East) 3/29/2011 Airborne particulate filter 9 State Beach Park Cs-134 0.6 ESE 0.00291 pCi/m3 0.000724 0.000669 composite 3/29/2011 Airborne particulate filter 12 Former SONGS Evaporation Cs-137 0.6 NW 0.00198 pCi/m3 0.000545 0.000394 composite Pond 3/29/2011 Airborne particulate filter 9 State Beach Park Cs-137 0.6 ESE 0.00221 pCi/m3 0.000666 0.000474 composite 3/29/2011 Airborne particulate filter 16 San Luis Rey Substation Cs-137 16.7 SE 0.00239 pCi/m3 0.000535 0.000349 composite (CONTROL)1 3/29/2011 Airborne particulate filter 1 City of San Clemente (City Hall) Cs-137 5.1 NW 0.00282 pCi/m3 0.000706 0.000426 composite 3/29/2011 Airborne particulate filter 13 Marine Corps Base (Camp Cs-137 0.7 E 0.00321 pCi/m3 0.000811 0.000494 composite Pendleton East) 6/28/2011 Airborne particulate filter 16 San Luis Rey Substation Cs-137 16.7 SE 0.000625 pCi/m3 0.000512 0.000427 composite (CONTROL)1 5/21/2011 Deer Deer Indicator Meat Cs-134 < 5 miles 0.0367 pCi/g 0.00627 0.00421 5/21/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.0346 pCi/g 0.0059 0.00387 7/6/2011 Deer Deer Control Meat Cs-134 > 5 miles 0.0299 pCi/g 0.00657 0.00552 7/6/2011 Deer Deer Control Meat Cs-137 > 5 miles 0.0318 pCi/g 0.00675 0.00458 36

TABLE B-4 Date Media Location Analyte Distance/Direction Activity & Units 2 Sigma MDC Analytical Remarks from SONGS 7/7/2011 Deer Deer Indicator Meat Cs-134 < 5 miles 0.0164 pCi/g 0.00528 0.00567 7/7/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.0161 pCi/g 0.00427 0.00473 8/1/2011 Deer Deer Control Meat Cs-134 > 5 miles 0.0152 pCi/g 0.00606 0.00582 8/1/2011 Deer Deer Control Meat Cs-137 > 5 miles 0.0101 pCi/g 0.00561 0.00485 8/9/2011 Deer Deer Indicator Meat Cs-134 < 5 miles 0.0165 pCi/g 0.00557 0.00531 8/9/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.017 pCi/g 0.00621 0.00431 8/31/2011 Deer Deer Indicator Meat Cs-134 < 5 miles 0.0108 pCi/g 0.00476 0.00297 8/31/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.0103 pCi/g 0.00395 0.00394 9/19/2011 Deer Deer Indicator Meat Cs-134 < 5 miles 0.0114 pCi/g 0.00485 0.00511 9/19/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.0126 pCi/g 0.0047 0.00397 9/20/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.00685 pCi/g 0.00406 0.00473 9/26/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.011 pCi/g 0.00361 0.00368 10/22/2011 Deer Deer Control Meat Cs-137 > 5 miles 0.0135 pCi/g 0.00801 0.00789 11/12/2011 Deer Deer Control Meat Cs-137 > 5 miles 0.0344 pCi/g 0.0147 0.0113 11/12/2011 Deer Deer Indicator Meat Cs-137 < 5 miles 0.015 pCi/g 0.0144 0.0115 03/23/2011 Local Crops SONGS Garden I-131 0.247 pCi/g 0.026 0.00935 Sorrel 03/23/2011 Local Crops SONGS Garden Cs-134 0.0283 pCi/g 0.0111 0.00999 Sorrel 03/23/2011 Local Crops SONGS Garden Cs-137 0.0292 pCi/g 0.00868 0.00875 Sorrel 03/24/2011 Local Crops Oceanside Control I-131 0.062 pCi/g 0.0161 0.0151 Lettuce 03/24/2011 Local Crops Oceanside Control I-131 0.0184 pCi/g 0.00893 0.00836 Strawberry 37

STATISTICAL

SUMMARY

OF REMP DATA FOR 2011 38

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit All Indicator Location with Highest Annual Mean Number of Nonroutine sampled (Unit of Number of Analysis of Detection Locations Mean Control Locations Reported Name, Distance Mean Measurement) Performed (LLD) (Range) Mean (Range) Measurements and Direction (Range)

Weekly Airborne Particulates Gross Beta Activity - Table 2 (pCi/cu.m)

Be-7 35 0.11 (24/31) Marine Corp Base 0.12 (3/4) 0.12 (3/4) 35 (0.0447 - 0.17) (Camp Pendleton East) (0.10 - 0.14) (0.0673 - 0.16) 0.7 Mi. E Cs-134 35 0.0115 (15/31) Former SONGS 0.0241 (1/4) 0.0069 (3/4) 35 (0.0040 - 0.0266) Evaporation Pond (0.0241 - 0.0241) (0.0040 - 0.0124) 0.6 Mi. NW Cs-137 35 0.0124 (14/31) Bluff 0.0243 (1/5) 0.0119 (2/4) 35 (0.0029 - 0.0243) 0.7 WNW (0. 0243 - 0. 0243) (0.0035 - 0.0203)

Gross Beta 416 0.01 0.0426 (363/363) Substitute (AP 13 backup) 0.0502 (1/1) 0.0445 (53/53) 0 (0.0131 - 0.20) 0.2 Mi. E (0.0502 - 0.0502) (0.0186 - 0.17)

I-131 35 0.0519 (15/31) AWS Roof Parking 0.0784 (2/5) 0.0373 (2/4) 35 (0.0063 - 0.0945) 0.18 Mi. NW (0.0622 - 0.0945) (0.0093 - 0.0653)

Te-132 24 0.0222 (5/21) Mesa EOF 0.0366 (1/3) 0.0127 (1/3) 24 (0.0117 - 0.0366) 0.7 NNW (0.0366 - 0.0366) (0. 0127 - 0. 0127)

Non-routine reported measurements include the special weekly gamma isotopic analyses performed to monitor the trans-Pacific transport of licensed material from the nuclear accident at the Fukushima Daiichi Nuclear Power Station.

39

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit All Indicator Location with Highest Annual Mean Number of Nonroutine sampled (Unit of Number of Analysis of Detection Locations Mean Control Locations Reported Name, Distance Mean Measurement) Performed (LLD) (Range) Mean (Range) Measurements and Direction (Range)

Weekly Radioiodine I-131 Activity - Table 3 (pCi/cu.m)

I-131 416 0.07 0.018 (55/363) San Luis Rey Substation 0.028 (5/52) 0.24 (6/53) 0 (0.0083-0.93) 16.7 Mi. SE (0.0208 - 0.80) (0.0144 - 0.80)

This table summarizes the weekly air iodine 131 cartridge data above the critical level (1.64 x one sigma). Note that in an ideal gamma isotopic database, consisting entirely of sample values with no detectable radioactivity, approximately 5% of the data will be greater than the critical level. Iodine 131 attributable to the nuclear accident at the Fukushima Daiichi Nuclear Power Station was detected during 2011 in this media.

40

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit All Indicator Location with Highest Annual Mean Control Locations Number of Nonroutine sampled (Unit of Number of Analysis of Detection Locations Mean Name, Distance Mean Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Quarterly Comp. Airborne Particulates Gamma - Table 4A (pCi/cu.m)

Be-7 33 0.20 (29/29) Marine Corp Base 0.22 (4/4) 0.22 (4/4) 0 (0.11 - 0.31) (Camp Pendleton East) (0.15 - 0.31) (0.16 - 0.27) 0.7 Mi. E Cs-134 33 0.05 0.0013 (10/29) Marine Corp Base 0.0028 (1/4) 0.0024 (1/4) 0 (2.29E 0.0029) (Camp Pendleton Eastl) (0.0028 - 0.0028) (0.0024 - 0.0024) 0.7 Mi. E 0.0012 (11/29) Marine Corp Base 0.0018 (2/4) 0.0015 (2/4)

Cs-137 33 0.06 (2.76E 0.0032) (Camp Pendleton Eastl) (4.85E 0.0032) (6.25E 0.0024) 0 0.7 Mi. E Be-7 (Beryllium 7) is a naturally occurring radioactive isotope produced by cosmic radiation. Be-7 was confirmed above the detection limit in all the SONGS air particulate quarterly composite samples analyzed in 2011. The results include detectable Cs-134 and Cs-137 attributable to the nuclear accident at Fukushima.

The term "< LLD," as used above, means that all results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background.

41

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit of All Indicator Location with Highest Annual Mean Number of Nonroutine Control Locations sampled (Unit of Number of Analysis Detection Locations Mean Name, Distance Mean Reported Mean (Range)

Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Ocean Water Gamma Spectral Analysis - Table 5 (pCi/l)

Ba-140 52 15 1.37 (1/40) (D) Newport Beach 2.22 (1/12) 2.22 (1/12) 0 (1.37 - 1.37) 30 Mi. NW (2.22 - 2.22) (2.22 - 2.22)

Co-58 52 15 <LLD (0/40) (D) Newport Beach 1.23 (2/12) 1.23 (2/12) 0

(-) 30 Mi. NW (1.17- 1.29) (1.17- 1.29)

Co-60 52 15 1.83 (3/40) (B) Outfall - Unit 2 2.01 (2/12) 1.50 (3/12) 0 (1.47- 2.21) 1.5 Mi. SW (1.80- 2.21) (1.14- 1.75)

Cs-134 52 15 1.46 (5/40) (A) Station Discharge 1.54 (4/12) 1.25 (2/12) 0 (0.96 - 2.49) Outfall - Unit 1 (0.96 - 2.49) (1.15 - 1.35) 0.6 Mi. SW Cs-137 52 18 1.58 (2/40) (A) Station Discharge 1.72 (1/12) 1.35 (3/12) 0 (1.43 - 1.72) Outfall - Unit 1 (1.72 - 1.72) (1.13 - 1.77) 0.6 Mi. SW Fe-59 52 30 <LLD (0/40) --- (0/2) < LLD (0/12) 0

(-) (-) (-)

H-3 52 3000 275.80 (5/40) (C) Outfall - Unit 3 300.00 (1/12) 295.00 (1/12) 0 (252.00 - 300.00) 1.2 Mi. SSW (300.00 - 300.00) (295.00 - 295.00)

I-131 52 15 1.70 (1/40) (B) Outfall - Unit 2 1.70 (1/12) <LLD (0/12) 0 (1.70 - 1.70) 1.5 Mi. SW (1.70 - 1.70) (-)

K-40 52 353.60 (40/40) (A) Station Discharge 359.83 (12/12) 354.25 (12/12) 0 (293.00 - 397.00) Outfall - Unit 1 (310.00 - 397.00) (327.00 - 386.00) 0.6 Mi. SW La-140 52 15 1.37 (1/40) (D) Newport Beach 2.22 (1/12) 2.22 (1/12) 0 (1.37 - 1.37) 30 Mi. NW (2.22 - 2.22) (2.22 - 2.22)

Mn-54 52 15 1.95 (1/40) (B) Outfall - Unit 2 1.95 (1/12) 1.31 (1/12) 0 (1.95 - 1.95) 1.5 Mi. SW (1.95 - 1.95) (1.31 - 1.31)

Nb-95 52 15 1.64 (8/40) (B) Outfall - Unit 2 1.69 (2/12) 0.99 (2/12) 0 (0.94 - 3.16) 1.5 Mi. SW (1.59 - 1.78) (0.93 - 1.04)

Th-230 52 1061.96 (25/40) (A) Station Discharge 1199.33 (6/12) 1121.33 (9/12) 0 (247.00 - 2290.00) Outfall - Unit 1 (247.00 - 1760.00) (332.00 - 2110.00) 0.6 Mi. SW The naturally occurring radioactive isotope K-40 (potassium 40) was detected in all SONGS Ocean water samples analyzed in 2011. The analysis results for all other radionuclides were less than the detection limit.

The term "< LLD," as used above, means that all results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background. The numerical values listed in this table are those values above the critical level and do not indicate that these radionuclides were detected in any samples.

This table is a statistical summary of the radionuclides detected in 2011 (K-40) and the radionuclides listed in the ODCM 42

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit of All Indicator Location with Highest Annual Mean Number of Nonroutine Control Locations sampled (Unit of Number of Analysis Detection Locations Mean Name, Distance Mean Reported Mean (Range)

Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Ocean Water Gamma Spectral Analysis - Table 5 (pCi/l)

Zn-65 52 30 < LLD (0/40) --- (0/12) <LLD (0/12) 0

(-) (-) (-)

Zr-95 52 15 3.00 (4/40) (C) Outfall- Unit 3 3.03 (3/12) 2.29 (2/12) 0 (1.82 - 4.05) 1.2 Mi. SSW (1.82 - 4.05) (1.91 - 2.67)

The naturally occurring radioactive isotope K-40 (Potassium 40) was detected in all SONGS Ocean water samples analyzed in 2011. The analysis results for all other radionuclides were less than the detection limit.

The term "< LLD," as used above, means that all results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background. The numerical values listed in this table are those values above the critical level and do not indicate that these radionuclides were detected in any samples.

This table is a statistical summary of the radionuclides detected in 2011 (K-40) and the radionuclides listed in the ODCM 43

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit All Indicator Location with Highest Annual Mean Number of Nonroutine Control Locations sampled (Unit of Number of Analysis of Detection Locations Mean Name, Distance Mean Reported Mean (Range)

Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Quarterly Composite Ocean Water Tritium Activity - Table 7 (pCi/l)

H-3 16 3000 281.00 (3/12) (D) Newport Beach 409.00 (2/4) 409.00 (2/4) 0 (255.00 - 296.00) 30 Mi. NW (394.00 - 424.00) (394.00 - 424.00) 44

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit of All Indicator Location with Highest Annual Mean Number of Nonroutine Control Locations sampled (Unit of Number of Analysis Detection Locations Mean Name, Distance Mean Reported Mean (Range)

Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Drinking Water Analysis -

Table 9A (pCi/l)

Ba-140 31 15 2.39 (2/19) Camp Pendleton 2.39 (2/12) <LLD (0/12) 0 (1.80 - 2.98) 2.2 Mi. NNW (1.80 - 2.98) (-)

Co-58 31 15 1.07 (1/19) Oceanside (Control) 1.21 (1/12) 1.21 (1/12) 0 (1.07- 1.07) 15.6 Mi. SE (1.21- 1.21) (1.21- 1.21)

Co-60 31 15 1.14 (3/19) Oceanside (Control) 1.88 (1/12) 1.88 (1/12) 0 (1.04- 1.28) 15.6 Mi. SE (1.88- 1.88) (1.88- 1.88)

Cs-134 31 15 1.12 (3/19) Oceanside (Control) 1.77 (2/12) 1.77 (2/12) 0 (1.06 - 1.16) 15.6 Mi. SE (1.50 - 2.03) (1.50 - 2.03)

Cs-137 31 18 <LLD (0/19) --- (0/12) <LLD (0/12) 0

(-) (-) (-)

Fe-59 31 30 <LLD (0/19) Oceanside (Control) 1.67 (1/12) 1.67 (1/12) 0

(-) 15.6 Mi. SE (1.67 - 1.67) (1.67 - 1.67)

Gross Beta 31 4 4.21 (13/19) San Clemente Well #8 5.67 (7/7) 3.65 (12/12) 0 (1.73 - 10.20) 4 Mi. NNW (2.29 - 10.20) (2.25 - 5.02)

H-3 31 3000 288.00 (2/19) Oceanside (Control) 332.00 (3/12) 332.00 (3/12) 0 (261.00 - 315.00) 15.6 Mi. SE (265.00 - 443.00) (265.00 - 443.00)

I-131 31 15 2.34 (1/19) Camp Pendleton 2.34 (1/12) <LLD (0/12) 0 (2.34 - 2.34) 2.2 Mi. NNW (2.34 - 2.34) (-)

K-40 31 28.00 (3/19) Oceanside (Control) 28.27 (3/12) 28.27 (3/12) 0 (19.90 - 32.80) 15.6 Mi. SE (23.10 - 37.40) (23.10 - 37.40)

La-140 31 15 2.39 (2/19) Camp Pendleton 2.39 (2/12) < LLD (0/12) 0 (1.80 - 2.98) 2.2 Mi. NNW (1.80 - 2.98) (-)

Mn-54 31 15 <LLD (0/19) Oceanside (Control) 0.84 (1/12) 0.84 (1/12) 0

(-) 15.6 Mi. SE (0.84 - 0.84) (0.84 - 0.84)

Nb-95 31 15 3.82 (2/19) Camp Pendleton 3.82 (2/12) 1.31 (1/12) 0 (3.73 - 3.91) 2.2 Mi. NNW (3.73 - 3.91) (1.31 - 1.31)

Zn-65 31 30 2.19 (1/19) San Clemente Well #8 2.19 (1/7) <LLD (0/12) 0 (2.19 - 2.19) 4 Mi. NNW (2.19 - 2.19) (-)

Zr-95 31 15 2.31 (3/19) San Clemente Well #8 2.44 (1/7) 2.06 (2/12) 0 (1.95 - 2.54) 4 Mi. NNW (2.44 - 2.44) (2.00 - 2.12)

During 2011 gross beta was confirmed above the a posteriori MDC in most drinking water samples. Gross beta is attributable to naturally occurring radionuclides. All the other analysis results were less than detectable for SONGS related radionuclides.

The term "< LLD," as used above, means that all results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background. The numerical values listed in this table are those values above the critical level and do not indicate that these radionuclides were detected in any samples.

This table is a statistical summary of the analysis results confirmed above the a posteriori MDC in 2010 (Gross Beta) as well as those radionuclides listed in the ODCM Starting in October 2006 San Clemente drinking water was sampled and analyzed at the request of the City of San Clemente. This table includes the City of San Clemente drinking water analysis results.

45

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit All Indicator Location with Highest Annual Mean Number of Nonroutine Control Locations sampled (Unit of Number of Analysis of Detection Locations Mean Name, Distance Mean Reported Mean (Range)

Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-annual Shoreline Sediment Gamma Spectral Analysis - Table 10 (pCi/g)

Cs-134 8 0.15 0.0674 (4/6) Newport Beach Control 0.14 (2/2) 0.14 (2/2) 0 (0.0182 - 0.017) 29.2 Mi. NW (0.12 - 0.16) (0.12 - 0.16)

Cs-137 8 0.18 <LLD (0/6) --- (0/2) <LLD (0/2) 0

(-) (-) (-)

K-40 8 11.92 (6/6) Newport Beach Control 18.05 (2/2) 18.05 (2/2) 0 (5.41 - 17.20) 29.2 Mi. NW (18.00 - 18.10) (18.00 - 18.10)

Th-228 8 0.78 (6/6) Newport Beach Control 2.74 (2/2) 2.74 (2/2) 0 (0.24 - 2.43) 29.2 Mi. NW (2.07 - 3.40) (2.07 - 3.40)

During 2011 naturally occurring thorium 228 (Th-228) and potassium 40 (K-40) were confirmed above the a posteriori MDC in most shoreline sediment samples.

The term "< LLD," used above, indicates that all analysis results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background. The numerical values listed in this table for Cs-137 are those values above the critical level and do not indicate that Cs-137 was detected in any samples.

This table is a statistical summary of the analysis results confirmed above the a posteriori MDC in 2011 (K-40 and Th-228) as well as those radionuclides listed in the ODCM 46

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit All Indicator Location with Highest Annual Mean Number of Nonroutine Control Locations sampled (Unit of Number of Analysis of Detection Locations Mean Name, Distance Mean Reported Mean (Range)

Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Ocean Bottom Sediment Gamma Spectral Analysis - Table 11 (pCi/g)

Cs-134 14 0.15 0.0660 (9/12) (F) SONGS Upcoast 0.11 (2/2) <LLD (0/2) 0 (0.0235 - 0.15) 0.9 Mi. WSW (0.0658 - 0.15) (-)

Cs-137 14 0.18 0.0289 (1/12) (D) Unit 3 Outfall 0.0289 (1/2) 0.0240 (1/2) 0 (0.0289 - 0. 0289) 1.2 Mi. SSW (0.0289 - 0. 0289) (0. 0240 - 0. 0240)

K-40 14 16.88 (12/12) Unit 2 Conduit 18.60 (2/2) 18.50 (2/2) 0 (14.40 - 19.90) 0.1 Mi. SW (17.30 - 19.90) (17.80 - 19.20)

Th-228 14 0.97 (12/12) (F) SONGS Upcoast 1.41 (2/2) 0.53 (2/2) 0 (0.63 - 1.92) 0.9 Mi. WSW (0.90 - 1.92) (0.37 - 0.68)

During 2011, naturally occurring Th-228 (thorium 228) and K-40 (potassium 40) were confirmed above the a posteriori MDC in most ocean bottom sediment samples.

The term "< LLD," used above, indicates that all analysis results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background. The numerical values listed in this table for Cs-137 are those values above the critical level and do not indicate that Cs-137 was detected in any samples.

This table is a statistical summary of the analysis results confirmed above the a posteriori MDC in 2011 (K-40 and Th-228) as well as those radionuclides listed in the ODCM 47

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit Location with Highest Annual Mean Number of Nonroutine All Indicator Locations Control Locations sampled (Unit of Number of Analysis of Detection Name, Distance Mean Reported Mean (Range) Mean (Range)

Measurement) Performed (LLD) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

Black Perch Co-58 5 0.13 < LLD (0/3) (C) Laguna Beach 0.0040 (1/2) 0.0040 (1/2) 0

(-) 18.2 Mi. NW (0.0040 - 0.0040) (0.0040 - 0.0040)

Black Perch Co-60 5 0.13 < LLD (0/3) ---- (0/1) < LLD (0/2) 0

(-) (-) (-)

Black Perch Cs-134 5 0.13 < LLD (0/3) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Black Perch Cs-137 5 0.15 0.0075 (1/3) (A) Unit 1 Outfall 0.0075 (1/2) < LLD (0/2) 0 (0.0075 - 0.0075) 0.9 Mi. WSW (0.0075 - 0.0075) (-)

Black Perch Fe-59 5 0.26 <LLD (0/3) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Black Perch K-40 5 3.49 (3/3) (B) Units 2 and 3 Outfall 3.73 (1/1) 3.65 (2/2) 0 (3.16 - 3.73) 1.5 Mi. SSW (3.73 - 3.73) (3.45 - 3.84)

Black Perch Mn-54 5 0.13 <LLD (0/3) ---- (0/2) <LLD (0/2) 0

(-) (-) (-)

Black Perch Zn-65 5 0.26 < LLD (0/3) ---- (0/2) <LLD (0/2) 0

(-) (-) (-)

Blacksmith Co-58 1 0.13 <LLD (0/1) ---- (0/1) < LLD (0/0) 0

(-) (-) (-)

Blacksmith Co-60 1 0.13 <LLD (0/1) ---- (0/1) < LLD (0/0) 0

(-) (-) (-)

Blacksmith Cs-134 1 0.13 <LLD (0/1) ---- (0/1) < LLD (0/0) 0

(-) (-) (-)

Blacksmith Cs-137 1 0.15 0.0068 (1/1) (B) Units 2 and 3 Outfall 0.0068 (1/1) < LLD (0/0) 0 (0.0068 - 0.0068) 1.5 Mi. SSW (0.0068 - 0.0068) (-)

Blacksmith Fe-59 1 0.26 <LLD (0/1) ---- (0/1) < LLD (0/0) 0

(-) (-) (-)

Blacksmith K-40 1 3.25 (1/1) (B) Units 2 and 3 Outfall 3.25 (1/1) < LLD (0/0) 0 (3.25 - 3.25) 1.5 Mi. SSW (3.25 - 3.25) (-)

Blacksmith Mn-54 1 0.13 < LLD (0/1) ---- (0/1) < LLD (0/0) 0

(-) (-) (-)

Blacksmith Zn-65 1 0.26 < LLD (0/1) ---- (0/1) < LLD (0/0) 0

(-) (-) (-)

<LLD results are less than the critical level 1.64 sigma.

48

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit Location with Highest Annual Mean Number of Nonroutine All Indicator Locations Control Locations sampled (Unit of Number of Analysis of Detection Name, Distance Mean Reported Mean (Range) Mean (Range)

Measurement) Performed (LLD) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

California Mussel Co-58 6 0.13 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

California Mussel Co-60 6 0.13 < LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

California Mussel Cs-134 6 0.13 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

California Mussel Cs-137 6 0.15 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

California Mussel Fe-59 6 0.26 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

California Mussel K-40 6 2.29 (4/4) (A) Unit 1 Outfall 2.36 (2/2) 2.14 (2/2) 0 (2.10 - 2.61) 0.9 Mi. WSW (2.10 - 2.61) (2.10 - 2.18)

California Mussel Mn-54 6 0.13 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

California Mussel Zn-65 6 0.26 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Kelp Bass Co-58 2 0.13 <LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

Kelp Bass Co-60 2 0.13 <LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

Kelp Bass Cs-134 2 0.13 <LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

Kelp Bass Cs-137 2 0.15 0.0135 (1/2) (A) Unit 1 Outfall 0.0135 (1/2) < LLD (0/0) 0 (0.0135 - 0.0135) 0.9 Mi. WSW (0.0135 - 0.0135) (-)

Kelp Bass Fe-59 2 0.26 < LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

Kelp Bass K-40 2 3.82 (2/2) (A) Unit 1 Outfall 3.82 (2/2) < LLD (0/0) 0 (3.69 - 3.94) 0.9 Mi. WSW (3.69 - 3.94) (-)

Kelp Bass Mn-54 2 0.13 < LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

Kelp Bass Zn-65 2 0.26 <LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

<LLD results are less than the critical level 1.64 sigma.

49

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit Location with Highest Annual Mean Number of Nonroutine All Indicator Locations Control Locations sampled (Unit of Number of Analysis of Detection Name, Distance Mean Reported Mean (Range) Mean (Range)

Measurement) Performed (LLD) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

Sheephead Co-58 4 0.13 < LLD (0/2) ---- (0/2) <LLD (0/2) 0

(-) (-) (-)

Sheephead Co-60 4 0.13 <LLD (0/2) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Sheephead Cs-134 4 0.13 0.0090 (1/2) (B) Units 2 and 3 Outfall 0.0090 (1/2) < LLD (0/2) 0 (0.0090 - 0.0090) 1.5 Mi. SSW (0.0090 - 0.0090) (-)

Sheephead Cs-137 4 0.15 <LLD (0/2) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Sheephead Fe-59 4 0.26 <LLD (0/2) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Sheephead K-40 4 3.51 (2/2) (C) Laguna Beach 3.54 (2/2) 3.54 (2/2) 0 (3.48 - 3.54) 18.2 Mi. NW (3.43 - 3.65) (3.43 - 3.65)

Sheephead Mn-54 4 0.13 <LLD (0/2) 0.0035 (1/2) 0.0035 (1/2) 0 (C) Laguna Beach

(-) (0.0035 - 0.0035) (0.0035 - 0.0035) 18.2 Mi. NW Sheephead Zn-65 4 0.26 <LLD (0/2) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Spiny Lobster Co-58 6 0.13 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Spiny Lobster Co-60 6 0.13 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Spiny Lobster Cs-134 6 0.13 0.0066 (1/4) (B) Units 2 and 3 Outfall 0.0066 (1/2) < LLD (0/2) 0 (0.0066 - 0.0066) 1.5Mi. SSW (0.0066 - 0.0066) (-)

Spiny Lobster Cs-137 6 0.15 <LLD (0/4) (C) Laguna Beach 0.0036 (1/2) 0.0036 (1/2) 0

(-) 18.2 Mi. NW (0.0036 - 0.0036) (0.0036 - 0.0036)

Spiny Lobster Fe-59 6 0.26 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Spiny Lobster K-40 6 3.26 (4/4) (C) Laguna Beach 3.59 (2/2) 3.59 (2/2) 0 (2.98 - 3.71) 18.2 Mi. NW (3.32 - 3.85) (3.32 - 3.85)

Spiny Lobster Mn-54 6 0.13 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Spiny Lobster Zn-65 6 0.26 <LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

<LLD results are less than the critical level 1.64 sigma.

50

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit Location with Highest Annual Mean Number of Nonroutine All Indicator Locations Control Locations sampled (Unit of Number of Analysis of Detection Name, Distance Mean Reported Mean (Range) Mean (Range)

Measurement) Performed (LLD) and Direction (Range) Measurements Semi-Annual Local Crops Gamma Spectral Analysis - Table 13A (pCi/g)

Lettuce Be-7 3 < LLD (0/0) South East of Oceanside 0.23 (1/3) 0.23 (1/3) 0

(-) 22 Mi SE (0.23 - 0.23) (0.23 - 0.23)

Lettuce Cs-134 3 0.06 < LLD (0/0) ---- (0/3) < LLD (0/3) 0

(-) (-) (-)

Lettuce Cs-137 3 0.08 < LLD (0/0) South East of Oceanside 0.0120 (1/3) 0.0120 (1/3) 0

(-) 22 Mi SE (0.0120 - 0.0120) (0.0120 - 0.0120)

Lettuce I-131 3 0.06 < LLD (0/0) South East of Oceanside 0.0620 (1/3) 0.0620 (1/3) 0

(-) 22 Mi SE (0.0620 - 0.0620) (0.0620 - 0.0620)

Lettuce K-40 3 < LLD (0/0) South East of Oceanside 2.45 (3/3) 2.45 (3/3) 0

(-) 22 Mi SE (1.82 - 3.44) (1.82 - 3.44)

Lettuce TI-208 3 < LLD (0/0) South East of Oceanside 0.0180 (2/3) 0.0180 (2/3) 0

(-) 22 Mi SE (0.0167 - 0.0193) (0.0167 - 0.0193)

Sorrel Be-7 3 0.35 (3/3) SONGS Garden 0.35 (3/3) < LLD (0/0) 0 (0.21 - 0.53) 0.4 Mi. NNW (0.21-0.53) (-)

Sorrel Cs-134 3 0.06 0.0283 (1/3) SONGS Garden 0.0283 (1/3) < LLD (0/0) 0 (0.0283 - 0.0283) 0.4 Mi. NNW (0.0283 - 0.0283) (-)

Sorrel Cs-137 3 0.08 0.0292 (1/3) 0.0292 (1/3) < LLD (0/0) 0 SONGS Garden (0.0292 - 0.0292) (0.0292 - 0.0292) (-)

0.4 Mi. NNW Sorrel I-131 3 0.06 0.25 (1/3) 0.25 (1/3) < LLD (0/0) 0 SONGS Garden (0.25 - 0.25) (0.25 - 0.25) (-)

0.4 Mi. NNW Sorrel K-40 3 3.98 (3/3) SONGS Garden 3.98 (3/3) < LLD (0/0) 0 (3.36 - 4.31) (3.36 - 4.31) (-)

0.4 Mi. NNW Strawberry Be-7 1 < LLD (0/0) ---- (0/1) < LLD (0/1) 0

(-) (-) (-)

Strawberry Cs-134 1 0.06 < LLD (0/0) South East of Oceanside 0.0054 (1/1) 0.0054 (1/1) 0

(-) 22 Mi SE (0.0054 - 0.0054) (0.0054 - 0.0054)

During 2011, naturally occurring K-40 (potassium 40) and Be-7 (Beryllium 7) were confirmed above the a posteriori MDC in local crop samples.

The term "< LLD," used above, indicates that all analysis results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular analysis result should be considered as other than background. The data in this table includes Cs-134, Cs-137, and I-131 analysis results greater than the MDC attributable to fallout from the nuclear accident at Fukushima.

This table is a statistical summary of the analysis results confirmed above the a posteriori MDC in 2011 (K-40) as well as those radionuclides listed in the ODCM 51

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit Location with Highest Annual Mean Number of Nonroutine All Indicator Locations Control Locations sampled (Unit of Number of Analysis of Detection Name, Distance Mean Reported Mean (Range) Mean (Range)

Measurement) Performed (LLD) and Direction (Range) Measurements Semi-Annual Local Crops Gamma Spectral Analysis - Table 13A (pCi/g)

Strawberry Cs-137 1 0.08 < LLD (0/0) ---- (0/1) < LLD (0/1) 0

(-) (-) (-)

Strawberry I-131 1 0.06 < LLD (0/0) South East of Oceanside 0.0184 (1/1) 0.0184 (1/1) 0

(-) 22 Mi SE (0.0184 - 0.0184) (0.0184 - 0.0184)

Strawberry K-40 1 < LLD (0/0) South East of Oceanside 1.40 (1/1) 1.40 (1/1) 0

(-) 22 Mi SE (1.40 - 1.40) (1.40 - 1.40)

Tomato Be-7 4 0.0157 (1/2) SONGS Garden 0.0157 (1/2) 0.0124 (1/2) 0 (0. 0157 - 0.0157) 0.4 Mi. NNW (0. 0157 - 0.0157) (0. 0124 - 0.0124)

Tomato Cs-134 4 0.06 < LLD (0/2) ---- (0/2) 0

(-) (-) < LLD (0/2)

(-)

Tomato Cs-137 4 0.08 < LLD (0/2) ---- (0/2) 0

< LLD (0/2)

(-) (-) (-)

Tomato I-131 4 0.06 < LLD (0/2) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Tomato K-40 4 2.29 (2/2) SONGS Garden 2.29 (2/2) 1.90 (2/2) 0 (1.85 - 2.73) 0.4 Mi. NNW (1.85 - 2.73) (1.50 - 2.30)

During 2011, naturally occurring K-40 (potassium 40) and Be-7 (Beryllium 7) were confirmed above the a posteriori MDC in local crop samples.

The term "< LLD," used above, indicates that all analysis results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular analysis result should be considered as other than background. The data in this table includes Cs-134, Cs-137, and I-131 analysis results greater than the MDC attributable to fallout from the nuclear accident at Fukushima.

This table is a statistical summary of the analysis results confirmed above the a posteriori MDC in 2011 (K-40) as well as those radionuclides listed in the ODCM 52

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit Location with Highest Annual Mean Number of Nonroutine All Indicator Locations Control Locations sampled (Unit of Number of Analysis of Detection Name, Distance Mean Reported Mean (Range) Mean (Range)

Measurement) Performed (LLD) and Direction (Range) Measurements Annual Soil Analysis - Depth 3 Table 14 (pCi/g)

Cs-134 5 0.15 0.0596 (3/4) Basilone Road/ I-5 0.0653 (1/1) 0.0282 (1/1) 0 (0.0518 - 0.0653) Freeway Off ramp (0. 0653 - 0.0653) (0. 0282 - 0. 0282) 2 Mi. NW Cs-137 5 0.18 0.22 (2/4) Old Route 101 - East 0.31 (1/1) 0.22 (1/1) 0 (0.12 - 0.31) Southeast (0.31 - 0.31) (0.22 - 0.22) 3 Mi. ESE K-40 5 15.39 (4/4) Basilone Road/ I-5 19.00 (1/1) 2.34 (1/1) 0 (9.27 - 19.00) Freeway Off ramp (19.00 - 19.00) (2.34 - 2.34) 2 Mi. NW Th-228 5 0.72 (4/4) Basilone Road/ I-5 1.02 (1/1) 0.18 (1/1) 0 (0.52 - 1.02) Freeway Off ramp (1.02 - 1.02) (0.18 - 0.18) 2 Mi. NW During 2010, naturally occurring Th-228 (thorium 228) and K-40 (potassium 40) were confirmed above the a posteriori MDC in all soil samples. Cs-137 (Cesium 137) was detected in three samples and is attributable to fallout from nuclear weapons testing and from Chernobyl.

The term < LLD, used above, indicates that all analysis results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background.

This table is a statistical summary of the analysis results for K-40 and those radionuclides listed in the ODCM for sediment samples.

53

RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2011 to 12/31/2011 Medium or Pathway Type and Total Lower Limit Location with Highest Annual Mean Number of Nonroutine All Indicator Locations Control Locations sampled (Unit of Number of Analysis of Detection Name, Distance Mean Reported Mean (Range) Mean (Range)

Measurement) Performed (LLD) and Direction (Range) Measurements Semi-Annual Kelp Analysis -

Table 15 (pCi/g)

Cs-134 15 0.06 < LLD (0/5) ---- (0/2) < LLD (0/10) 0

(-) (-) (-)

Cs-137 15 0.08 < LLD (0/5) ---- (0/2) <LLD (0/10) 0

(-) (-) (-)

I-131 15 0.06 0.18 (5/5) Capistrano Beach Reef (G) 0.29 (2/2) 0.21 (10/10) 0 (0.0275 - 0.39) Mi (0.0999 - 0.47) (0.0221 - 0.51)

K-40 15 11.05 (5/5) (E) Salt Creek 13.97 (2/2) 11.23 (10/10) 0 (9.88 - 13.10) (CONTROL) (13.00 - 14.93) (8.73 - 14.93) 11 Mi. NNW During 2011, naturally occurring K-40 (potassium 40) were confirmed above the a posteriori MDC in all kelp samples. I-131 (iodine 131) was also confirmed above the a posteriori MDC in all 15 kelp samples. I-131 is known to be a constituent of sewage plant discharges due to medically administered I-131. The activity of I-131 in the control sample (Salt Creek

- about 11 miles up coast from SONGS) has historically been higher than the I-131 activity in kelp closer to SONGS. I-131 in kelp is attributable to sewage plant effluents.

The term < LLD, used above, indicates that all analysis results were less than the critical level (1.64 x one sigma). The critical level is used to determine if a bias exists in the database and is not used to determine if a particular sample result should be considered other than background.

- - The April 2011 Capistrano Beach Reef sample was collected 9.0 miles NW. The October 2011 sample was 8.8 miles NW.

54

APPENDIX C

SUMMARY

OF QUALITY CONTROL PROGRAMS 55

All REMP samples are collected, shipped, and analyzed in accordance with NRC Regulatory Guide 4.15, Revision 1. 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 2011 the CEAL was General Engineering Laboratory (GEL). The CEAL for REMP TLDs was Stanford Dosimetry.

INTERLABORATORY CROSS-CHECK PROGRAM:

The CEAL 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 in Table C-1. The CEAL's performance meets the criteria described in Reg. Guide 4.15. Discrepancies and non-agreement results are resolved through a formal Condition Report evaluation process.

56

QUARTERLY DUPLICATE TLDs SONGS deployed a duplicate TLD package in the same location and canister as TLD 66. The quarterly dose measured by these separate TLD packages is statistically equal.

DUPLICATE TLD DATA COMPARISON 1ST QUARTER 2ND QUARTER 3RD QUARTER 4TH QUARTER TLD 66 14.3 +/- 1.0 12.6 +/- 0.6 13.6 +/- 1.0 13.1 +/- 0.6 TLD 200 14.7 +/- 1.2 13.4 +/- 1.9 14.1 +/- 0.9 13.0 +/- 0.7 Data is reported as mR per standard quarter +/- 1 sigma 57

ANNUAL DUPLICATE TLDs An annual duplicate TLD package is collocated with TLD 67.

TLD 67 TLD 201 (annual duplicate) average exposure in mR exposure in mR per standard quarter per standard quarter (July 2010 to July 2011) (July 2010 to July 2011) 16.4 15.8 COMPARISON OF TLD TO PIC DATA, PIC 3 PIC 4 PIC 6 PIC 8 18.1 16.3 15.0 11.3 TLD 40 TLD 61 TLD 63 TLD 65 16.90 14.2 13.0 12.6 PIC data converted to mR per standard quarter compared to the 4th Quarter co-located 2011 TLD data.

CALIBRATION OF AIR SAMPLER VOLUME METERS The Shop Services and Instrumentation Division of SCE performs an annual calibration procedure using standards referenced to NIST on all REMP air sampler gas meters. When the gas meters are removed from service, the meter is calibrated and the calibration reports are reviewed for bias. This is an a posteriori review of the gas meter performance to evaluate method bias and to identify possible outlier analysis results. In 2011, one (1) gas meter failed to meet this criterion at all calibrated flow rates. A review of the affected gross beta data has revealed no meaningful anomalies. Thus no discernable impact to the REMP database or conclusions resulted from use of the out of tolerance gas meter.

58

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

§ Eckert & Ziegler Analytics 1380 Seaboard Industrial Blvd.

Atlanta, Georgia 30318" U.s.A.

Tel 404-352-8677 Fax 404-352"2837 RESULTS OF ENVIRONMENTAL CROSS CHECK PROGRAM GEL LABORATORIES, LLC First Quarter 2011 (Ref. Date 17-Mar-2011) a~aL 8-Fyne-2o(/

Walter Levich, Interim QA Manager ANA FormOO2 Rev. --

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

59

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

SAMPLE ANALYSIS GEL UNCERTAINTY EZA UNCERTAINTY RATIO VALUE (1 Sigma) VALUE (1 Sigma) GEL:

EZA E7468-278 1-131 9.73E+01 pCilL 5.21E+00 9.40E+Ol pCiIL 1.57E+00 1.04 Gamma Ce-141 Analyzed but Not Present Not Present Water Cr-51 2.16E+02 pCiIL 2.00E+01 1.96E+02 pCiIL 3.27E+00 1.10 Cs-134 8.52E+Ol pCi/L 4.67E+OO 8.56E+Ol pCi/L 1.43E+OO 0.99 GELID Cs-137 1.47E+02 pCilL 7.46E+00 1.35E+02 pCilL 2.25E+00 1.09 268293004 Co-58 7.71E+Ol pCiIL 4.54E+00 7.44E+01 pCiIL 1.24E+00 1.04 Mn-54 1.88E+02 pCiIL 9.29E+00 1.75E+02 pCiIL 2.92E+00 1.08 Fe-59 1.26E+02 pCilL 7.50E+00 1.15E+02 pCiIL 1.91E+00 1.10 Zn-65 . 1.90E+02 pCiIL 1.00E+Ol 1.72E+02 pCiIL 2.87E+00 1.11 Co-60 1.14E+02 pCilL 5.95E+00 1.13E+02 pCiIL 1.88E+00 1.01 E7466-278 Sr-89 9.23E+Ol pCiIL 2.32E+00 9.74E+Ol pCiIL 1.63E+OO 0.95 Sr-89/90 w/maf* Sr-90 1.27E+Ol pCiIL 2.01E+00 1.58E+Ol pCiIL 2.64E-Ol 0.80 Milk GELID 268293002 E7467-278 1-131 1.00E+02 pCiIL 5.81E+00 9.69E+01 pCilL 1.62E+OO 1.03 Gamma Ce-141 Analyzed but Not Present Not Present Milk Cr-51 3.27E+02 pCiIL 2.64E+Ol 2.98E+02 pCilL 4.98E+00 1.10 Cs-134 1.19E+02 pCiIL 6.87E+00 1.30E+02 pCiIL 2.18E+00 0.91 GELID Cs-137 2.20E+02 pCiIL 1.02E+Ol 2.05E+02 pCiIL 3.43E+00 1.07 268293003 Co-58 1.18E+02 pCiIL 6.44E+00 1.13E+02 pCiIL 1.89E+00 1.04 Mn-54 2.78E+02 pCiIL 1.43E+Ol 2.66E+02 pCiIL 4.45E+00 1.04 Fe-59 1.94E+02 pCiIL 1.16E+01 1.75E+02 pC ilL 2.91E+00 1.11 Zn-65 2.88E+02 pCiIL 1.53E+01 2.61E+02 pCiIL 4.36E+00 1.10 Co-60 1.76E+02 pCilL 8.61E+00 1.72E+02 pCiIL 2.87E+00 1.03 E7465-278 1-131 1.03E+02 pCi 5.85E+OO 9.47E+Ol pCi 1.58E+00 1.09 1-131 Cartridge GELID 268293001

maf = mixed activation/fission interferences First Quarter 2011 (Ref. Date 17-Mar-2011)

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

60

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

~ Eckert & Ziegler Analytics 1380 Seaboard Industrial Blvd.

Atlanta, Georgia 30318 - U.s.A.

Tel 404-352*8677 Fax 404*352*2837 RESULTS OF ENVIRONMENTAL CROSS CHECK PROGRAM GEL LABORATORIES, LLC Second Quarter 2011 (Ref. Date 16-.Jun-2011)

Id/~d~

Walter Levich, Interim QA Manager D e ANA Form002 Rev. ---

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

61

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

SAMPLE ANALYSIS GEL UNCERTAINTY EZA UNCERTAINTY RATIO VALUE (1 Sigma) VALUE (1 Sigma) GEL:

EZA E7859-278 1-131 8.17E+Ol pCi 4.31E+00 8.65E+Ol pCi 1.44E+00 0.95 1-131 Cartridge GELID 280255001 E7860-278 Sr-89 9.68E+Ol pCilL 2.60E+00 1.03E+02 pCilL 1.72E+00 0.94 Sr-89/90 w/maf* Sr-90 1.58E+Ol pCilL 7.97E-Ol 1.56E+Ol pCiIL 2.61E-Ol 1.01 Milk GELID 280255002 E7861-278 1-131 9.00E+Ol pCilL 8.09E+00 1.03E+02 pCiIL 1. 72E+OO 0.87 Gamma Ce-141 8.36E+Ol pCiIL 5.97E+00 7.99E+Ol pCilL 1.33E+00 1.05 Milk Cr-51 2.39E+02 pCiIL 2.80E+Ol 2.06E+02 pCilL 3.44E+00 1.16 Cs-134 1.71E+02 pCiIL 9.36E+00 1.90E+02 pCiIL 3. 1 7E+00 0.90 GELID Cs-137 1.43E+02 pCilL 8.04E+00 1.38E+02 pCiIL 2.30E+00 1.04 280255003 Co-58 1.50E+02 pCilL 8.29E+00 1.52E+02 pCilL 2.53E+00 0.99 Mn-54 1.32E+02 pCilL 7.40E+00 1.38E+02 pCilL 2.30E+00 0.96 Fe-59 1.43E+02 pCilL 1.02E+Ol 1.23E+02 pCiIL 2.06E+00 1.16 Zn-65 2.76E+02 pCilL 1.44E+Ol 2.61E+02 pCiIL 4.35E+00 1.06 Co-60 1.92E+02 pCilL 9.31E+00 1.95E+02 pCiIL 3.25E+00 0.99 E7862-278 1-131 1.20E+02 pCiIL 1.28E+Ol 1.01E+02 pCiIL 1.68E+OO 1.19 Gamma Ce-141 9.30E+Ol pCiIL 7.48E+00 9.35E+Ol pCiIL 1.56E+00 0.99 Water Cr-51 3.36E+02 pCiIL 4.05E+Ol 2.41E+02 pCiIL 4.03E+00 1.39 Cs-134 2.02E+02 pCilL 1.01E+Ol 2.22E+02 pCilL 3.71E+00 0.91 GELID Cs-137 1.73E+02 pCiIL 8.25E+00 1.61E+02 pCiIL 2.70E+00 1.07 280255004 Co-58 1.75E+02 pCiIL 9.04E+00 1.77E+02 pCilL 2.96E+00 0.99 Mn-54 1.66E+02 pCilL 8.45E+00 1.61E+02 pCilL 2.69E+00 1.03 Fe-59 1.57E+02 pCilL 1.04E+Ol 1.44E+02 pCilL 2.41E+00 1.09 Zn-65 3.47E+02 pCilL 1.74E+Ol 3.05E+02 pCilL 5.09E+00 1.14 Co-60 2.38E+02 pCilL 1.25E+Ol 2.28E+02 pCiIL 3.80E+OO 1.05

maf = mixed activation/fission interferences Second Quarter 2011 (Ref. Date 16-Jun-2011)

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

62

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

e Eckert&Ziegler Analytics 1380 Seaboard Industrial Blvd.

Atlanta,Georgia 30318' U.S.A.

Tel 404'352'8677 Fax 404'352'2837 RESULTS OF ENVIRONMENTAL CROSS CHECK PROGRAM GEL LABORATORIES, LLC Third Quarter 2011 (Ref. Date 15-Sep-2011)

L.~ " No" ,tOil Levan Tkavadve, Nuclear Metrologist Date ANA Form002 Rev. -

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

63

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

SAMPLE ANALYSIS GEL UNCERTAINTY EZA UNCERTAINTY RATIO VALUE (I Sigma) VALUE (1 Sigma) GEL:

EZA E809S-278 1-131 7.69E+Ol pCi 4.60E+00 8.02E+Ol pCi 1.34E+00 0.96 1-131 Cartridge GELID 286114001 E8096-278 Sr-89 9.51E+Ol pCiIL 2.54E+00 9.08E+Ol pCilL l.S2E+00 LOS Sr-89/90 w/maf* Sr-90 8.49E+00 pCiIL 6.86E-Ol 1.47E+Ol pCilL 2.45E-Ol 0.58 Milk GELID 286114002 E8097-278 1-131 8.59E+Ol pCilL S.55E+00 8.92E+Ol pCilL 1.49E+00 0.96 Gamma Ce-141 6.S9E+Ol pCilL 3.94E+00 6.67E+Ol pCilL 1.11E+OO 0.99 Milk Cr-51 2.18E+02 pCilL 2.24E+Ol 2.26E+02 pCilL 3.78E+00 0.96 Cs-134 1.20E+02 pCilL 7.58E+00 1.28E+02 pCilL 2.14E+00 0.94 Cs-137 1.23E+02 pCilL 6.30E+00 1.14E+02 pCilL 1.90E+00 1.08 GEL ID Co-58 9.08E+Ol pCiIL S.97E+00 9.75E+Ol pCilL 1.63E+00 0.93 286114003 Mn-54 1.57E+02 pCilL 9.80E+00 l.S1E+02 pCilL 2.S2E+00 1.04 Fe-S9 5.30E+Ol pCilL 6.79E+00 5.48E+Ol pCilL 9.1SE-Ol 0.97 Zn-65 1.88E+02 pCilL 1.48E+Ol 1.80E+02 pCiIL 3.01E+00 1.04 Co-60 I.S1E+02 pCiIL 7.50E+00 I.S7E+02 pCilL 2.62E+00 0.96 E8098-278 1-131 7.23E+Ol pCilL 6.2SE+00 8.01E+Ol pCilL 1.34E+00 0.90 Gamma Ce-141 9.06E+Ol pCiIL 7.34E+00 9.1SE+Ol pCilL 1.53E+00 0.99 Water Cr-Sl 3.19E+02 pCilL 3.08E+Ol 3.IOE+02 pCiIL S.18E+00 1.03 Cs-134 I.S7E+02 pCilL 8.71E+00 1.76E+02 pCilL 2.94E+00 0.89 Cs-137 1.60E+02 pCilL 8.08E+00 1.56E+02 pCiIL 2.61E+00 1.03 GELID Co-58 1.34E+02 pCilL 7.94E+00 1.34E+02 pCilL 2.23E+00 1.00 286114004 Mn-S4 2.19E+02 pCilL 1.16E+Ol 2.07E+02 pCilL 3.46E+00 1.06 Fe-S9 9.04E+Ol pCilL 8.S8E+00 7.52E+Ol pCiIL 1.26E+00 1.20 Zn-65 2.74E+02 pCilL l.S3E+Ol 2.47E+02 pCilL 4. 13E+OO 1.11 Co-60 2.2SE+02 pCilL 1.20E+Ol 2.15E+02 pCilL 3.60E+00 1.04

- - - - ~*********************************************************************************,

maf = mixed activation/fission interferences Third Quarter 2011 (Ref. Date lS-Sep-2011)

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

64

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

~ Ecker't Analytics

&Ziegler 1380 Seaboard Industrial Blvd.

Atlanta, Georgia 30318' U.s.A.

Tel 404'352'8677 Fax 404'352'2837 RESULTS OF ENVIRONMENTAL CROSS CHECK PROGRAM GEL LABORATORIES, LLC Fourth Quarter 2011 (Ref. Date 08-Dee-2011)

Levan Tkavadze, Nuclear M trologist Date ANA Form002 Rev. -

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

65

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

SAMPLE ANALYSIS GEL UNCERTAINTY EZA UNCERTAINTY RATIO VALUE (1 Sigma) VALUE (l Sigma) GEL:

EZA E8197-278 1-131 9.52E+Ol pCi 4.40E+00 8.92E+Ol pCi 1.49E+00 1.07 1-131 Cartridge GELID 291783001 E8198-278 Sr-89 8.78E+Ol pCiIL 4.76E+00 8.96E+Ol pCiIL 1.50E+00 0.98 Gamma Sr-90 1.51E+Ol pCiIL 2.15E+00 1.48E+Ol pCiIL 2.47E-Ol 1.02 Milk GELID 291783002 E8199-278 1-131 9.36E+Ol pCiIL 7.33E+00 9.02E+Ol pCiIL 1.51E+00 1.04 Gamma Cr-51 5.53E+02 pCiIL 3.58E+Ol 5.66E+02 pCiIL 9.45E+00 0.98 Milk Cs-134 1.59E+02 pCiIL 9.29E+00 1.71E+02 pCiIL 2.86E+00 0.93 Cs-137 2.27E+02 pCiIL 1.07E+Ol 2.10E+02 pCiIL 3.50E+00 1.08 GELID Co-58 2.18E+02 pCiIL 1.25E+Ol 2.21E+02 pCiIL 3.69E+00 0.99 291783003 Mn-54 2.52E+02 pCiIL 1.46E+Ol 2.41E+02 pCiIL 4.02E+00 1.05 Fe-59 1.90E+02 pCiIL 1.66E+Ol 1.83E+02 pCiIL 3.06E+00 1.04 Zn-65 3.19E+02 pCiIL 2.63E+Ol 2.91E+02 pCiIL 4.87E+00 1.09 Co-60 2.82E+02 pCiIL 1.32E+Ol 2.70E+02 pCiIL 4.51E+00 1.04 Ce-141 1.00E-Ol pCiIL 2.10E+00 Not Present Fourth Quarter 2011 (Ref. Date OS-Dee-20ll)

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

66

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

. \

SAMPLE ANALYSIS GEL UNCERTAINTY EZA UNCERTAINTY RATIO VALUE (1 Sigma) VALUE (1 Sigma) GEL:

EZA E8200-278 1-131 8.44E+Ol pCiIL 1.55E+Ol 8.87E+Ol pCiIL 1.48E+00 0.95 Gamma Cr-5l 5.32E+02 pCiIL 6.55E+Ol 5.66E+02 pCiIL 9.45E+00 0.94 Water Cs-134 1.56E+02 pCiIL 1.73E+Ol 1. 71E+02 pCiIL 2.86E+00 0.91 Cs-137 2.06E+02 pCiIL 1.87E+Ol 2.10E+02 pCiIL 3.50E+00 0.98 GELID Co-58 2.02E+02 pCiIL 2.24E+Ol 2.21E+02 pCiIL 3.69E+00 0.92 291783004 Mn-54 2.50E+02 pCiIL 2.81E+Ol 2.41E+02 pCiIL 4.02E+00 1.04 Fe-59 1.81E+02 pCiIL 3.10E+Ol 1.83E+02 pCiIL 3.06E+00 0.99 Zn-65 2.95E+02 pCiIL 4.74E+Ol 2.91E+02 pCiIL 4.87E+00 1.01 Co-60 2.58E+02 pCiIL 2.34E+Ol 2.70E+02 pCiIL 4.51E+00 0.96 Ce-141 -9.60E-Ol pCiIL 4.04E+00 Not Present Fourth Quarter 2011 (Ref. Date 08-Dec-2011)

¹ The acceptable ratio is +/- 25% of the known value for Analytics.

67

APPENDIX D COMPARISON OF OPERATIONAL TO PREOPERATIONAL DATA AND ANALYSIS OF TRENDS 68

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 2011 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:

A. External Radiation F. Ocean Bottom Sediments B. Air Particulates G. Marine Species C. Radioiodine H. Local Crops D. Ocean Water I. Soil E. Shoreline Sediment (sand) J. Kelp K. Drinking Water All of 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 2011 operational data are possible for each of the following exposure pathways to man: (1) direct radiation, (2) air particulates (inhalation), and (3) ocean water (waterborne). 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 in the vicinity of the SONGS Units 2/3 outfalls.

"The atypical detection of licensed material in both indicator and control samples of particulate matter, radioiodine cartridges, local crops and kelp is credibly attributed to the trans-Pacific transport of airborne releases from Dai-Ichi, Fukushima following the March 11, 2011 Tohoku earthquake and is not related to the operations of San Onofre."

When fallout from the Fukushima Daiichi nuclear accident are excluded the preoperational data are higher than the operational data. The decrease in radioactivity is due primarily to the cessation of nuclear weapons testing and to the decay of fallout radionuclides. There is a close correlation between indicator and control data over several decades. See Figures 2A, 2B, 3A, 3B, 3C and 4. There are no indications of adverse effects from SONGS on the environment.

69

A. Direct Radiation SONGS Units 2/3:

Direct radiation measurements for the SONGS REMP were made quarterly at 38 indicator locations and 11 control locations in 2011. (See Appendix I for ISFSI TLD data). Direct radiation samples (TLDs) were collected at a number of 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 2011 operational year for Units 2/3, the routine indicator TLD locations ranged from 10.3 to 30.1 mR, averaging 16.7 mR while the control locations ranged from 12.0 to 19.0 mR with an average of 16.0 mR. Outside the EAB all of the control and indicator TLD data is less than the calculated detection limit (5 mR per standard quarter) above the baseline background for each TLD location. 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 seen 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 fission products from previous nuclear weapons tests.

The average direct radiation doses were larger at both indicator and control locations during the preoperational period than during the 2011 operational period for SONGS Units 2/3. The larger average observed during the preoperational time span may be attributable to Chinese atmospheric nuclear weapons tests on March 14, 1978 and on October 15, 1980. The large average of the annual direct radiation levels seen at most TLD sample locations during 1986 and 1987 is attributable to the Chernobyl Nuclear Power Plant accident that occurred April 26, 1986.

Figure 2A and 2B compare the environmental radiation levels of selected indicator and control locations. 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 the operation of SONGS had no detectable impact on the environment as measured by this sample medium.

B. Air Particulates SONGS Units 2/3:

From January 1979 through July 1982 (considered to be the preoperational period for SONGS Units 2/3), there is a period of 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 are attributable to the Chinese atmospheric nuclear weapons test conducted on October 15, 1980. Fallout from the nuclear accident at Fukushima was detected in this sample medium during 2011.

70

Figures 3A, 3B, and 3C compare the monthly average gross beta particulate in air activity levels of selected indicator locations with the control location over a period of 36 years (January 1976 to December 2011). The data clearly show a close correlation between the indicator and control locations for the entire time period covered. The various spike increases in gross beta activity at all sample locations are closely grouped and timed to coincide with known events external to SONGS with worldwide radiological impact. These events include: Chinese atmospheric nuclear weapons testing on September 17, 1977; March 14, 1978; October 15, 1980; and the April 1986 Chernobyl accident. The graphs (Figures 3A, 3B and 3C) show that the environmental levels of gross beta remained substantially similar at both the indicator and the control locations over an extended period of time, with both control and indicator locations showing simultaneous variations of equal magnitude. The fluctuations in gross beta activity are not attributable to SONGS and are the result of factors external to SONGS.

C. Radioiodine SONGS Units 2/3:

Most of the preoperational data for I-131 level were below the detection limit. During 2011 fallout from the nuclear accident at Fukushima was detected in this sample media. SONGS had no effect on the environment as measured by the radioiodine cartridge data.

D. Ocean Water SONGS Units 2/3:

Ocean water samples were collected on a monthly basis in the vicinity of each of the Station discharge outfalls, which served as indicator locations, and from the Newport Beach control location. The ocean water samples are analyzed for naturally-occurring and station-related gamma-emitting radionuclides. They are composited quarterly and analyzed for tritium.

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-l34, and Cs-137 were detected in an ocean water sample collected from the SONGS Unit l outfall. Concentrations of the radionuclides in this sample were 11, 6, 380, and 430 pCi/l, respectively. Tritium was also detected in two of the ocean water samples collected in May 1980 from the SONGS Unit 2 outfall and from the Newport Beach control location.

The data for all other SONGS related radionuclides at all ocean water locations during the 2011 operational period were below both the a priori LLD and the lower a posteriori MDC. We conclude that the operation of SONGS had a negligible impact on the environment as measured by this sample medium.

71

E. Shoreline Sediments (Sand)

SONGS Units 2/3:

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 2011 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 2011 operational period. Thus the impact of SONGS on the environment as measured by the sample medium is considered to be negligible.

F. Ocean Bottom Sediments SONGS Units 2/3:

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. The results of the analyses are listed in Table D-1B.

SONGS-related radionuclides were also detected in samples collected during 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.l 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 samples was 0.06 and 0.26 pCi/g, respectively.

The results 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 radionuclides in all ocean bottom sediment samples analyzed in 2011 was below the a posteriori MDC. We conclude that operation of SONGS Units 2/3 has had a negligible impact upon this environmental medium.

72

TABLE D-1A SHORELINE SEDIMENTS CONCENTRATION (pCi/g, wet weight)

PREOPERATIONAL AND OPERATIONAL DATA*

SONGS UNITS 2/3 INDICATOR CONTROL Radionuclide** Period Range Average Range Average Cs-137 PreOp 0.012-0.022 0.019 <LLD-0.032 <LLD All other measured PreOp < LLD < LLD < LLD < LLD SONGS related Radionuclides Operational < LLD < LLD < LLD < LLD TABLE D-1B OCEAN BOTTOM SEDIMENTS CONCENTRATION (pCi/g, wet weight)

PREOPERATIONAL AND OPERATIONAL DATA*

SONGS UNITS 2/3 INDICATOR CONTROL Radionuclide Period Range Average Range Average Mn-54 PreOp 0.0150-0.49 0.129 <LLD <LLD Co-58 PreOp 0.013-1.160 0.199 <LLD <LLD Co-60 PreOp 0.014-8.100 0.788 <LLD <LLD Ag-110m PreOp <LLD-0.020 <LLD <LLD <LLD Cs-137 PreOp 0.014-0.090 0.039 <LLD-0.043 <LLD Cs-137 Operational <LLD <LLD <LLD <LLD Ce-144 PreOp 0.060-0.260 0.160 <LLD <LLD All other measured PreOp < LLD < LLD < LLD < LLD SONGS related radionuclides Operational < LLD < LLD < LLD < LLD

PreOp = January 1979 to July 1982; Operational - January to December 2011

- During January to December 2011 all station related Radionuclides from all sample locations were < LLD LLD Lower limits of detection for operational data are listed in Appendix B.

73

G. Marine Species (Flesh)

SONGS Units 2/3:

Non-migratory marine species were collected semi-annually near SONGS to determine the amount of radioactivity that could be consumed by man or that was present in the food chain to man. Marine species caught by the SONGS outfalls and from Laguna Beach include two species of adult fish, crustacea and mollusks. Upon collection, the flesh portion is analyzed for gamma-emitting, radionuclides as specified in the ODCM. The results are subsequently reported as pCi/gram wet weight.

Results for several marine species for both the preoperational and 2011 operational periods for Units 2/3 are summarized in Table D-2. The marine species used for purposes of comparison include: sheephead (a fish), Blacksmith, black perch (a fish), bay mussel (a mollusk), spiny lobster (a crustacea), and keyhole limpet (a mollusk). Radionuclides analyzed but not included in Table D-2 were below the lower limits of detection for both the preoperational and operational periods.

During the 2011 operational period, no SONGS related radionuclides were detected at either the a priori LLD or the lower a posteriori MDC. The data indicate no accumulation trends. The operation of SONGS Units 2/3 in 2011 had no impact on the environment as measured by this sample medium.

74

TABLE D-2 MARINE SPECIES CONCENTRATIONS (pCi/g, wet weight) PREOPERATIONAL AND 2011 OPERATIONAL DATA (SONGS UNITS 2/3)*

Sheephead Flesh**

INDICATOR CONTROL Radionuclide Period Range Average Range Average Co-58 PreOp 0.016-0.030 0.023 <LLD <LLD Co-60 PreOp 0.005-0.044 0.017 <LLD <LLD Ag-110m PreOp <LLD-0.004 <LLD <LLD <LLD Cs-137 PreOp 0.004-0.018 0.007 0.005-0.012 0.007 All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational < LLD < LLD < LLD < LLD radionuclides Black Perch Flesh**

INDICATOR CONTROL Radionuclide Period Range Average Range Average Co-58 PreOp 0.009-0.011 0.010 <LLD <LLD Co-60 PreOp 0.004-0.045 0.017 <LLD <LLD Ag-110m PreOp 0.002-0.009 0.006 <LLD <LLD Cs-137 PreOp 0.003-0.015 0.008 0.004-0.014 0.009 All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational < LLD < LLD < LLD < LLD radionuclides

PreOp = January 1979 to July 1982; Operational = January to December 2011. The species collected in 2011 were California Mussel, Black Perch, Blacksmith, Sheephead, Kelp Bass, and Spiny Lobster.

- During January to December 2011 all station related Radionuclides from all sample locations were < LLD LLD Lower limits of detection for operational data are listed in Appendix B.

75

TABLE D-2 MARINE SPECIES CONCENTRATIONS (pCi/g, wet weight) PREOPERATIONAL AND 2011 OPERATIONAL DATA (SONGS UNITS 2/3)*

Mussel Flesh (Bay or California)**

INDICATOR CONTROL Radionuclide Period Range Average Range Average Mn-54 PreOp 0.009-0.025 0.017 <LLD <LLD Co-58 PreOp 0.008-0.080 0.028 -- --

Co-60 PreOp 0.005-0.40 0.077 <LLD <LLD Cs-137 PreOp 0.003-0.006 0.004 <LLD <LLD Ru-103 PreOp <LLD-0.045 <LLD <LLD <LLD All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational < LLD < LLD < LLD < LLD Radionuclides Spiny Lobster Flesh**

INDICATOR CONTROL Radionuclide Period Range Average Range Average Co-58 PreOp 0.007-0.270 0.086 <LLD <LLD Co-60 PreOp 0.014-0.210 0.060 <LLD <LLD Cs-137 PreOp 0.005-0.011 0.008 0.040-0.015 0.008 All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational < LLD < LLD < LLD < LLD radionuclides

PreOp = January 1979 to July 1982; Operational = January to December 2011. The species collected in 2011 were California Mussel, Black Perch, Blacksmith, Sheephead, Kelp Bass, and Spiny Lobster.

- During January to December 2011 all station related Radionuclides from all sample locations were < LLD LLD Lower limits of detection for operational data are listed in Appendix B.

76

TABLE D-2 MARINE SPECIES CONCENTRATIONS (pCi/g, wet weight) PREOPERATIONAL AND 2010 OPERATIONAL DATA (SONGS UNITS 2/3)*

Sea Hare Flesh**

INDICATOR CONTROL Radionuclide Period Range Average Range Average Co-57 PreOp 0.006-0.017 0.009 <LLD <LLD Co-58 PreOp 0.006-12.4 1.233 <LLD <LLD Co-60 PreOp 0.016-2.000 0.448 0.003-0.027 0.013 Zn-65 PreOp <LLD-0.10 <LLD <LLD <LLD Ag-110m PreOp 0.018-0.50 0.138 0.020-0.039 0.030 Cs-137 PreOp <LLD-0.004 <LLD <LLD-0.005 <LLD All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational --- --- --- ---

radionuclides Keyhole Limpet (Flesh)**

INDICATOR CONTROL Radionuclide Period Range Average Range Average Co-58 PreOp 0.007-0.101 0.054 <LLD-0.190 <LLD Co-60 PreOp 0.021-0.040 0.033 <LLD-0.022 0.022 Ag-110m PreOp 0.033-0.101 0.054 0.005-0.042 0.022 Cs-137 PreOp <LLD <LLD <LLD-0.005 <LLD All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational --- --- --- ---

Radionuclides

PreOp = January 1979 to July 1982; Operational = January to December 2010

- Sea Hare and Keyhole Limpet samples were not collected in 2011 LLD Lower limits of detection for operational data are listed in Appendix B.

77

H. Local Crops SONGS Units 2/3:

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.

In the 2011 operational period fallout from the nuclear accident at the Fukushima Daiichi Nuclear Power Station was detected in local crop samples collected immediately after Fukushima. Samples collected in June and December 2011 were < MDC for all plant related radionuclides. The operation of SONGS had no impact on the environment as measured by this sample medium.

I. Soil SONGS Units 2/3:

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.

J. Kelp SONGS Units 2/3:

Kelp is collected semiannually from three indicator locations and from a control location situated in Laguna Beach. After collection, the samples are analyzed by gamma-spectral analysis for naturally-occurring and SONGS-related radionuclides. During 2011 four additional control sample locations were analyzed.

To assess the impact of SONGS operations on kelp, preoperational data were compared to 2011 operational data in Table D-4. Radionuclides detected during the preoperational period for SONGS Units 2/3 include Mn-54, Co-60, Zr-95, I-131, and Cs-137.

During the 2011 operational period, I-131 was detected in all samples. No other station related isotopes were detected in kelp samples during the 2011 operational period. Figure 4 (I31 in Kelp) shows a close correlation between indicator and control sample locations over an extended period of time.

Although I-131 activity has been randomly detected in kelp since 1977, there is no evidence that the concentration of I-131 or other station related radionuclides in kelp is increasing near SONGS. I-131 in kelp is due to the sewer release of medical administrations, since it has been detected consistently in control as well as indicator locations. Since 1988 the concentration of I-131, when detected, has typically been highest at the control locations. These data support the conclusion that during the Units 2/3 operational period, the detection of I-131 in kelp is due to factors external to SONGS.

78

K. Drinking Water No plant related radionuclides were detected during the 2011 operational period. Gross beta activity was detected during both the operational and preoperational periods at both the indicator and the control locations. No trends have been noted. There is no drinking water pathway for SONGS. The operation of SONGS had no impact on the environment as measured by this sample medium.

79

TABLE D-3 SOIL PREOPERATIONAL AND OPERATIONAL DATA* (pCi/g, dry weight)

SONGS UNITS 2/3 INDICATOR CONTROL Radionuclide Period Range Average Range Average Sr-90 PreOp 0.02-0.08 0.044 <LLD-0.03 <LLD Cs-137 PreOp 0.02-0.20 0.096 <LLD-0.06 <LLD Cs-137 Operational < LLD-0.31 0.22 0.22 0.22 All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational < LLD < LLD < LLD < LLD radionuclides TABLE D-4 KELP PREOPERATIONAL AND OPERATIONAL DATA* (pCi/g, wet weight)

SONGS UNITS 2/3 INDICATOR CONTROL Radionuclide Period Range Average Range Average Mn-54 PreOp <LLD-0.005 <LLD <LLD <LLD Co-60 PreOp 0.006-0.009 0.008 <LLD <LLD Zr(Nb)-95 PreOp 0.014-0.090 0.046 0.018-0.053 0.036 I-131 PreOp 0.006-0.024 0.013 0.008-0.030 0.014 I-131 Operational 0.0275- 0.39 0.18 0.0999 - 0.47 0.29 Cs-137 PreOp 0.004-0.009 0.006 <LLD <LLD All other PreOp < LLD < LLD < LLD < LLD measured SONGS related Operational < LLD < LLD < LLD < LLD radionuclides

PreOp = January 1979 to July 1982; Operational = January to December 2011 LLD Lower Limit of Detection for operational data are listed in Appendix B.

80

APPENDIX E DEVIATIONS FROM ODCM SAMPLING REQUIREMENTS IN 2011 81

DEVIATIONS FROM ODCM SAMPLING REQUIREMENTS Deviations from the ODCM sampling requirements are identified below in accordance with section 5.0 of the ODCM. The performance standard for environmental data collection of 95%

was met for all sample types. During 2011, the ODCM specified a priori LLD was achieved for most REMP samples. Deviations from the ODCM were associated with external factors not within the control of REMP personnel such as limited availability of marine samples at the locations specified in the ODCM. The 2011 ODCM deviations had no meaningful impact on the REMP database and did not compromise the validity of the reported conclusions.

PART I TERRESTRIAL SAMPLING A WEEKLY AIR SAMPLING Downtime for each air sampler in 2011 due to weekly sample collection, annual Preventive Maintenance (PM), and the annual gas meter change out was approximately 46 minutes for each sampler.

Weekly Change out: Approximately 0.5 minutes x 52 = 26 minutes Annual PM: Approximately 15 minutes Annual Gas Meter change out: Approximately 5 minutes Down times in excess of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months are described below for each ODCM required air sample.

Air Sampler 1 (City of San Clemente): No deviations were observed.

Air Sampler 9 (State Beach Park): Sampler # 9 had 10.7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months of down time in 2011 due to external factors (electrical power outages).

Air Sampler 12 (Former SONGS Evaporation Pond): Sampler # 12 had 8.8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months of down time in 2011 due to external factors (electrical power outages).

Air Sampler 13 (Camp Pendleton East): Sampler # 13 had 164.6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months of down time in 2011 due to external factors (electrical power outages and storm damage). Air sampler # 30 was placed in service as a compensatory measure during the January 2011 storm damage outage period.

Air Sampler 16 (San Luis Rey Substation): Sampler # 16 had 10.4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months of down time in 2011 due to external factors (electrical power outages).

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Summary of Air Sampler Corrective Actions The useful life of the vacuum pump motor assemblies is estimated to be five years based on the recommendation of the manufacturer and upon experience. If the internal components (motor and control valve) are replaced the useful life may be extended. During 2011 the REMP air samplers experienced no down time attributable to motor or vacuum pump assembly failure.

Thus there were no avoidable air sampler deviations from the ODCM during 2011.

B. DIRECT RADIATION No deviations were observed.

C. LOCAL CROPS No deviations were observed.

D. SHORELINE SEDIMENTS No deviations were observed.

E. DRINKING WATER No deviations were observed.

F. SOIL No deviations were observed.

PART II MARINE SAMPLING A. NON-MIGRATORY MARINE ANIMALS Samples were collected from the specified ODCM sample location when samples were available at that location. When the specified sample type was not available at the ODCM listed location, alternate locations were selected based on sample availability and proximity to the specified sample location. All indicator samples were obtained within two miles of the associated outfall. In some cases the indicator species is not the same as the control species due to limited availability at the indicator location. Most non-migratory marine species samples were not available at the locations specified in the ODCM. All indicator marine animal samples were collected within 2 miles of the Units 2 & 3 discharge diffusers.

B. OCEAN WATER SAMPLING No deviations were observed.

C. OCEAN BOTTOM SEDIMENTS No deviations were observed.

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APPENDIX F LAND USE CENSUS 84

INTRODUCTION The 2011 Land Use Census (LUC) was conducted in-house in accordance with Section 5.2 of the Offsite Dose Calculation Manual (ODCM) and per the Radiological Environmental Monitoring Program (REMP) Land Use Census Procedure, SO123-IX-1.20. The purpose of the Land Use Census is to identify radiation exposure pathways to humans. The methodology consists of reviewing aerial photographs of the study area and confirming data with the cognizant agency.

This study is conducted annually. Information on how long a person or persons will be located at the nonresidential uses closer than the closest residence is also estimated by the appropriate person or agency.

Executive Summary The land area around San Onofre Nuclear Generating Station (SONGS) is not subject to significant change due to the nature of the land uses. The area around SONGS is divided into sixteen (16) geographical sectors. The Pacific Ocean and Marine Corps Base Camp Pendleton comprise 13 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 area substantially inhibit significant land use changes. The 2011 Land Use Census (LUC) changes did not identify any new land uses.

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 (2,000 hours0 days 0 hours 0 weeks 0 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.

85

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 STUDY SCOPE The study area includes land in both Orange and San Diego counties. The Orange County portion includes a portion of the city of San Clemente (population estimated to be 63,743 as of January 1, 2011) and the San Clemente State Park. The San Diego County portion includes much of the Camp Pendleton USMC base, San Onofre State Beach and Park, and SONGS itself.

The LUC map is divided into 16 sectors; A, B, C, D, E, F, G, H, J, K, L, M, N, P, Q, and R. The ODCM requires that the LUC identify the nearest residences, milk animals, meat animals, and vegetable gardens of at least 500 square feet, and other specified uses (campgrounds, employment, etc.) in each of the sectors within five miles of SONGS. Sectors A, B, C, D, E, and F include land almost exclusively within the boundaries of the Marine Corps 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 are the Pacific Ocean; no land uses possible. Sectors P, Q, and R include the City of San Clemente and part of Camp Pendleton.

METHODOLOGY A review of the 2010 LUC and documentation notebook was conducted. Verification & revision of the 2010 data was accomplished by inquiry to the cognizant agency, organization, or individual possessing direct knowledge of the item being verified.

A vegetable garden census was performed by examining aerial photographs. Locations which appeared to correspond to garden locations were converted to street addresses. The identified locations were compared with the addresses evaluated in previous LUCs. No new gardens were identified in 2011.

The closest residence was established in each sector by aerial photo review and by correspondence with USMC Camp Pendleton. The meat and milk animal survey was performed by contacting the natural resources office on Camp Pendleton and the Orange County Agriculture Department. Information on other uses was obtained by contacting the appropriate organizations.

The 2011 Land Use Census survey was prepared per SONGS procedure SO123-IX-1.20, revision 6.

86

SUMMARY

OF CHANGES Summary of Changes

1. LUC # R-R3 - Camp Mesa Dry Camping had an estimated occupancy of 744 hours0.00861 days 0.207 hours 0.00123 weeks 2.83092e-4 months in 2011.

2. LUC # R-R2 - SONGS Camp Mesa. The total estimated maximum possible occupancy is 7296 hours0.0844 days 2.027 hours 0.0121 weeks 0.00278 months for 2011.

3. LUC # O-2B YMCA surfcamp - The YMCA did not operate an overnight surf camp during 2011 at San Onofre State Park.

4. LUC # R-C3 - San Onofre barracks. The new barracks building in Camp San Onofre were occupied by USMC residents age 17 and older on October 1, 2011. This is a new land use location. The maximum possible estimated occupancy for 2011 is 2208 hours0.0256 days 0.613 hours 0.00365 weeks 8.40144e-4 months .

5. LUC # O-9 USMC Sanitary Land Fill - The estimated occupancy changed in 2011.

6. Updated Camp Pendleton hunting take data for the period July 1, 2010 to June 30, 2011 is listed in Table 3. Per the base wildlife biologist, the exact location of a particular kill is not known. The reported take area should be interpreted as an estimate of approximate location.

Thus a deer reported as taken in hunting area Alpha 2 may actually have been taken in an adjacent hunting area (such as Romeo 3 or Bravo 3). There are no changes to the estimated distances from SONGS to the nearest vegetation potentially consumed by deer for 2011.

87

TABLE F-1 2011 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet Estimated Hours of Maximum Occupancy Units Miles 2/3 From Sector LUC # Residence U2/3 A R-A1 Camp San Mateo 3.6 FTR R-A2 SONGS Camp Mesa 0.4 7,296 B

C R-C2 Camp San Onofre Fire Station 2.4 3,744 R-C1 Camp San Onofre Barracks 524101 2.8 FTR R-C3 Camp San Onofre Barracks 2.6 2208 D R-D1 Camp San Onofre Barracks 3.0 FTR E R-E1 Camp Horno Barracks 4.1 FTR F

G Sectors H, J, K, L,M, and N have no identified land uses These Sectors are primarily the Pacific Ocean and contain only a small portion of the plant site, and a beach walkway providing access for state beach park users north & south of SONGS.

P R-P3 San Onofre Rec Beach (SORB) 1.0 FTR R-P2 San Mateo Point Housing 2.7 FTR R-P1 Cotton Point Estates 2.7 FTR Q R-Q5 SORB Resident Employee 1.1 FTR R-Q2 San Onofre III housing 1.4 FTR R-Q3 San Mateo Point Housing 2.7 FTR R R-R2 SONGS Camp Mesa 0.4 7,296 R-R3 SONGS Dry Camping PL12 0.7 744 R-R1 San Onofre III housing 1.3 FTR Bold Text indicates changes from 2010 LUC Data as of 9-30-2011 FTR - Full Time Residence 88

TABLE F-2 2011 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet Units Miles 2/3 From Sector LUC # Gardens U2/3 A

B C

D E

F G

Sectors H, J, K, L,M, and N have no identified land uses These Sectors are primarily the Pacific Ocean and contain only a small portion of the plant site, and a beach walkway providing access for state beach park users north & south of SONGS.

P G-3 Cotton Point Estate 2.8 Q G-8 2240 Ave Salvador 4.1 G-5 1706 S Ola Vista 4.4 G-6 1315 S Ola Vista 4.6 R G-10 SONGS Garden 0.4 Bold Text indicates changes from 2010 LUC Data as of 9-30-2011 FTR - Full Time Residence 89

TABLE F-3 2011 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet Estimated Hours of Maximum Units Miles 2/3 From Occupancy Sector LUC # Other Specified Uses U2/3 A O-8 Camp San Mateo Motor Pool 3.6 2,000 22 SCE Land Uses 0.4 ---

B O-9 USMC CP Sanitary Land Fill 2.1 816 C O-10 Camp San Onofre (STP #11) 2.2 2,000 D

E O-5 Camp Horno Motor Pool 4.0 2500 F O-1 San Onofre State Beach Guard Shack 0.8 1,500 31A Border Patrol Checkpoint (NB) 1.9 2400 31B Hwy Patrol Weigh Sta (NB) 2.1 1,960 G O-2 San Onofre Beach Campground 1.8 720 32 Hwy Patrol Weigh Sta (SB) 2.1 1,960 O-2A Endless Summer Surf Camp (see notes) / 2.8 4,380 Campground Host O-2B YMCA Surf Camp 2.0 0 Sectors H, J, K, L,M, and N have no identified land uses These Sectors are primarily the Pacific Ocean and contain only a small portion of the plant site, and a beach walkway providing access for state beach park users north & south of SONGS.

P O-6 Surf Beach (Lifeguard) 0.5 800 3 Trestles Beach Lookout Tower 1.8 500 Q O-3 State Park Office Trailer 0.6 2,000 5 Surf Beach Guard Shack 0.7 1,500 18 SORB Lifeguard Tower 1.2 2,000 1A SORB Campground Checkin 1.3 2000 R

Bold Text indicates changes from 2010 LUC Data as of 9-30-2011 FTR - Full Time Residence 90

APPENDIX G FIGURES FOR 2011 91

NuReg/CR-3332, ORNL-5968, Radiological Assessment Figure 1. Potential Radiation Exposure Pathways Leading to Man 92

Direct Radiation Monitoring 1981 to 1999 Quarterly Environmental TLD measurements in mR Selected TLDs located very close to SONGS vs. Selected CONTROL TLDs 50 40 30 20 10 0

TLD 11 .... 0.4 miles NW CONTROL TLD 44 .... 17.7 miles E TLD 12 .... 0.2 miles E TLD 58 .... 0.1 miles S Mean of CONTROL TLDs 31 & 50 TLD 59 .... 0.3 miles WNW Figure 2A 93

Direct Radiation Monitoring 1998 to 2011 Quarterly Environmental TLD measurements in mR Selected TLDs located very close to SONGS vs. Selected CONTROL TLDs 50 40 30 20 10 0

TLD 11 .... 0.4 miles NW CONTROL TLD 44 .... 17.7 miles E TLD 12 .... 0.2 miles E TLD 58 .... 0.1 miles S Mean of CONTROL TLDs 31 & 50 TLD 59 .... 0.3 miles WNW Figure 2B 94

Monthly Average Airborne Particulate Gross Beta Activity 0.5 Preoperational and Operational Data for SONGS Units 2 and 3 fallout from Chinese Atmospheric Nuclear 0.4 Weapons Test fallout from Sept. 1977 Chernobyl fallout from Chinese 0.3 Atmospheric Nuclear Weapons Test March 1978 fallout from Chinese 0.2 Atmospheric Nuclear Weapons Test Oct. 1980 SONGS Unit 2 start up July 26, 1982 SONGS Unit 3 0.1 start up August 29, 1983 0

San Clemente City Hall .... 5.1 Miles NW State Beach Park .... 0.6 Miles ESE Huntington Beach (CONTROL) .... 31.1 Miles NW Bluff .... 0.7 Miles WNW Figure 3A 95

Monthly Average Airborne Particulates Gross Beta Activity SONGS Units 2 and 3 from January 1988 to December 1997 0.5 0.4 0.3 0.2 0.1 0

City of San Clemente (City Hall) Huntington Beach (CONTROL) Marine Corp Base (Camp Pendleton East)

Figure 3B 96

Monthly Average Airborne Particulates Gross Beta Activity SONGS Units 2 and 3 January 1998 to to December 2011 0.5 0.4 0.3 0.2 0.1 0

City of San Clemente (City Hall) State Beach Park Oceanside City Hall (CONTROL)

Figure 3 C 97

Weekly Airborne Particulate Gross Beta Activity January to December 2011 0.5 0.4 0.3 Fukushima 0.2 0.1 0

City of San Clemente (City Hall) State Beach Park San Luis Rey Substation Figure 3D 98

I-131 in Aquatic Kelp 0.4 0.35 0.3 0.25 NOTE: CONTROL location samples Fukushima are obtained from either Laguna Beach or Salt Creek 0.2 0.15 0.1 0.05 0

San Onofre Kelp Bed Barn Kelp Bed San Mateo Kelp Bed CONTROL Figure 4 99

APPENDIX H ERRATA TO THE 2010 AREOR All data required by the ODCM in 2010 was reported in the 2010 AREOR. There are no errata to be appended to the 2010 AREOR.

100

APPENDIX I REMP TLDs CO-LOCATED WITH DPH TLDs DURING 2011 101

APPENDIX I REMP TLDs CO-LOCATED WITH DPH TLDs DURING 2011 California Department of Public Health (DPH) also maintains a TLD program in the environs of SONGS. Per Department of Public Health (DPH) request the results of (TLDs) that are co-located with DPH dosimeters are reported below.

The below listed quarterly TLD data is from the SCE TLDs adjacent to the DPH TLD programs.

The NRC location numbers refer to the locations in the old NRC program.

2011 Data from SCE TLDs (mR/ standard quarter) 1st 2nd 3rd 4th Location Number Location Name Qtr Qtr Qtr Qtr SCE 1 , NRC 7, DPH #2 San Clemente 18.1 16.8 16.7 17.3 SCE 2, NRC 23, DPH #8 Camp San Mateo 18.2 17.7 18.5 17.8 SCE 3, NRC 19, DPH #9 Camp San Onofre 16.4 15.4 16.5 15.5 SCE 6, DPH #10 Old Route 101 12.0 10.6 11.3 10.6 (East-Southeast)

SCE 10, NRC 12, DPH #6 San Onofre Surfing Beach 18.1 15.4 16.0 16.2 SCE 16, DPH #7* ESE Site boundary 22.3 17.5 19.3 17.8 SCE 22, NRC 11, DPH #4 Coast Guard Station 18.7 16.5 17.7 17.9 SCE 34, NRC 14, DPH #5 San Onofre Elementary 16.7 14.3 15.4 15.8 School SCE 41, NRC 25, Old Route 101 (Unit 3) 15.8 15.1 15.8 15.1 DPH #11**

SCE 50, NRC 32, DPH #13 Oceanside Fire Station 17.1 16.5 16.5 16.5

SCE 16 is approximately 15 meters from DPH 7. DPH 7 is across Basilone Rd

- SCE 41 is approximately 120 meters from DPH 11. Results included per DPH request 102

Appendix J Independent Spent Fuel Storage Installation (ISFSI) TLD Data 103

Independent Spent Fuel Storage Installation (ISFSI) TLD Data Per 10 CFR 72.126, SONGS implemented an area monitoring TLD program in the vicinity of the ISFSI. In the fourth quarter of 2001, 21 pre-operational TLDs were deployed in the area around the ISFSI foundation then under construction. The pre-operational TLDs data are compared to the data obtained after the commencement of used fuel storage in the ISFSI for the purposes of estimating the additional exposure potentially attributable to the operation of the ISFSI.

An evaluation of the entire REMP TLD database yielded estimated background exposure rate of approximately 15 mR / std quarter. However, some local variability within the CAB / EAB are to be attributable to factors external to SONGS (such as micro-geological variations). Another variable for the measured exposure rate is transit exposure to and from the TLD lab. The transit exposure is variable and is corrected by the lab but the issue of TLD shipment packaging geometry cannot be readily corrected. 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. Using this information, we conclude that the exposure rate outside the CAB (10 CFR 72 Controlled Area Boundary) is less than detectable. The detection limits are 5 mR per standard quarter and 10 mR per year. The exposure attributable to the operation of the ISFSI as indicated by this media is not measurable beyond the immediate area of the ISFSI.

During the first quarter 2011 the storage of the Unit 2 reactor head near the ISFSI in the North Industrial Area (NIA) elevated the exposure rate measurably in the immediate area of the ISFSI.

Environmental exposure rates are variable and small changes in TLD location can measurably change the data. The REMP TLD data show a seasonal variability that does not appear to be related to any activities at SONGS. The data support the conclusion that macro-environmental factors are the causative agents for the seasonal variations. Refer to Figure 2a and 2b. The ISFSI TLD data gathered to date appears to follow a similar seasonal variability. Refer to Figures 6-1, 6-2, and 6a. In addition to environmental factors, some non-ISFSI 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 appears to 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 had the highest readings in 2011. The closest publicly accessible location is SW of the ISFSI along the San Onofre Beach access road. The background corrected annual exposure for the access road TLDs 55 and 56 was 25 and 20 mR in 2011.

Assuming a maximum occupancy of 300 hours0.00347 days 0.0833 hours 4.960317e-4 weeks 1.1415e-4 months per year the dose to a member of the general public is < 1 mrem per year at this location as measured by the REMP TLDs.

104

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. The 2011 neutron exposure is below measurable levels for spent fuel in storage. Neutron exposure during fuel transfer is measurable at the fence surrounding the storage facility at low levels, typically a few mR per quarter. These measurements demonstrate that the neutron exposure is bounded by the projected neutron dose rates in calculation SCE 0508, is well within the limits specified in 10CFR72.104, and is consistent with known ISFSI radiological conditions. The measured ISFSI gamma TLD exposure rates were also determined to be consistent with the calculated ISFSI dose rates and known radiological conditions.

We conclude that exposure attributable to the storage of used fuel in the ISFSI is not measurable beyond the immediate area of the ISFSI and is well below regulatory limits.

105

Table J-1 ISFSI TLD Data ISFSI TLD DATA Background adjusted 2011 Quarterly 2011 Quarterly Results (mR) 2011 Quarterly Results (mR) Annual Annual 2011 Location Background 1 2 3 4 1 2 3 4 Baseline Total (mR) Total ISFSI 301 15.0 28.0 25.3 26.6 25.5 13.0 10.3 11.6 10.5 60.0 105.4 45.4 ISFSI 302 15.0 44.0 39.4 62.1 70.6 29.0 24.4 47.1 55.6 60.0 216.1 156.1 ISFSI 303 15.0 35.3 31.3 44.1 40.6 20.3 16.3 29.1 25.6 60.0 151.3 91.3 ISFSI 304 15.0 31.9 27.6 36.5 32.8 16.9 12.6 21.5 17.8 60.0 128.8 68.8 ISFSI 306 15.0 25.0 22.0 26.2 27.7 10.0 7.0 11.2 12.7 60.0 100.9 40.9 ISFSI 307 15.0 23.3 18.9 22.3 21.5 8.3 <LLD 7.3 6.5 60.0 86.0 26.0 ISFSI 308 15.0 21.0 18.3 20.6 19.8 6.0 <LLD 5.6 <LLD 60.0 79.7 19.7 ISFSI 309 15.0 21.1 18.2 20.3 19.5 6.1 <LLD 5.3 <LLD 60.0 79.1 19.1 ISFSI 310 15.0 20.0 18.5 19.9 19.1 <LLD <LLD <LLD <LLD 60.0 77.5 17.5 ISFSI 311 15.0 19.6 18.1 18.4 18.8 <LLD <LLD <LLD <LLD 60.0 74.9 14.9 ISFSI 312 15.0 15.3 13.8 14.5 14.4 <LLD <LLD <LLD <LLD 60.0 58.0 <LLD ISFSI 314 15.0 18.5 16.2 17.7 17.6 <LLD <LLD <LLD <LLD 60.0 70.0 <LLD ISFSI 315 15.0 18.9 16.8 17.8 17.2 < LLD <LLD <LLD <LLD 60.0 70.7 10.7 ISFSI 316 15.0 16.5 15.8 17.6 16.3 <LLD <LLD <LLD <LLD 60.0 66.2 <LLD ISFSI 317 15.0 19.9 17.6 19.0 20.2 <LLD <LLD <LLD 5.2 60.0 76.7 16.7 ISFSI 318 15.0 19.3 16.8 18.6 18.8 <LLD <LLD <LLD <LLD 60.0 73.5 13.5 ISFSI 319 15.0 20.7 17.2 18.8 18.6 5.7 <LLD <LLD <LLD 60.0 75.3 15.3 ISFSI 320 15.0 20.5 17.3 19.4 19.0 5.5 <LLD <LLD <LLD 60.0 76.2 16.2 ISFSI 321 15.0 21.5 18.1 19.4 19.6 6.5 <LLD <LLD <LLD 60.0 78.6 18.6 ISFSI 322 15.0 18.9 19.9 21.2 20.5 <LLD <LLD 6.2 5.5 60.0 80.5 20.5 ISFSI 323 15.0 25.6 29.7 28.3 30.9 10.6 14.7 13.3 15.9 60.0 114.5 54.5 ISFSI 324 15.0 40.4 70.2 55.1 98.2 25.4 55.2 40.1 83.2 60.0 263.9 203.9 ISFSI 325 15.0 91.2 79.7 105.1 89.2 76.2 64.7 90.1 74.2 60.0 365.2 305.2 ISFSI 326 15.0 36.5 31.7 38.3 42.5 21.5 16.7 23.3 27.5 60.0 149.0 89.0 ISFSI 327 15.0 329.1 325.4 269.6 <LLD 314.1 310.4 254.6 60.0 1232.1 1172.1 ISFSI 328 15.0 153.4 177.7 162.6 <LLD 138.4 162.7 147.6 60.0 658.3 598.3 55 San Onofre State Beach (U1 West) 15.0 21.8 20.9 21.4 20.5 6.8 5.9 6.4 5.5 60.0 84.6 24.6 56 San Onofre State Beach (U1 West) 15.0 21.4 18.5 18.8 20.9 6.4 <LLD <LLD 5.9 60.0 79.6 19.6 57 San Onofre State Beach (Unit 2) 15.0 21.5 16.7 18.2 18.6 6.5 <LLD <LLD <LLD 60.0 75.0 15.0 59 SONGS Meteorological Tower 15.0 22.6 19.0 20.1 18.9 7.6 <LLD 5.1 <LLD 60.0 80.6 20.6 106

H SAN ONOFRE AC BE STATE BEACH UB TLD 63 P CL Air Sampler 12 & TLD 67 RD P

§

¨5 P

Air Sampler 10 & TLD 10 EAB (10 CFR 50 Exclusion Area Boundary)

P TLD 11 and (10 CFR 72 Controlled Area Boundary)

EL CA MIN TLD 64 P OR G EA L

G G GG G GG GG TLD 59 P G G G GG G

G G GG G G GG G GG G G G TLD 55 P G TLD 41 P TLD 56 P UNIT 2 Figure 6-1 ISFSI TLDs and UNIT 3 P TLD 12 REMP TLDs TLD 57 P within the EAB TLD 58 P G ISFSI TLDs TLD 15 P TLD 73 P REMP TLDs P

EAB (10 CFR 50 Exclusion Area Boundary) P TLD 16 and CAB (10 CFR 72 Controlled Area Boundary)

Seawall/Fenceline Freeway Major Road TLD 13 P Local Street Railroad Air Sampler 9 P

µ

& TLD 66 500 0 500 SAN ONOFRE STATE BEACH Feet File Name: 2011AREOR_Figure6-1_11x8.mxd Path: \SONGS\AREOR\MXD\AREOR2011 Date: 03/07/2012 Reproduced with permission granted by THOMAS BROS MAPS PACIFIC

Features depicted herein are planning level accuracy, and intended for informational purposes only. Distances and locations may be distorted at this scale. Always consult with the proper legal documents or agencies regarding such features. OCEAN 107

G 321 OL D

HW G 316 G 320 Y 10 1

Unit 1 G 319 Reactor 307 G 308 G 317 Vessel G G 318 G G 306 301 G 304 G 309 G 326 REMP P TLD 59 303 G G 310 G

325 G 336 328 #

G 302 G G 311 327 337 TLD Elevation Relative to ISFSI Pad G #

G 312 301 78 324 302 32 338

G 322

303 33 304 33 Figure 6-2 G 323 306 4 ISFSI Foundation ISFSI TLDs and selected G 314 307 7 REMP TLDs near the 308 9 ISFSI Foundation P REMP TLD 55 G 315 309 3 310 3 G ISFSI TLSs 311 3

Removed TLDs 312 4 314 4 P REMP TLDs 315 4 Seawall/Fenceline Major Road 316 37 Railroad 317 42 P REMP 318 87

µ TLD 56 319 86 320 84 100 0 100 321 83 Feet 322 3 File Name: 2011AREOR_Figure6-2_11x8.mxd 323 4 Path: \SONGS\AREOR\MXD\AREOR2011 Date: 03/07/2012 324 4 Reproduced with permission granted by THOMAS BROS MAPS

© Thomas Bros. Maps. All rights reserved. 325 4 Features depicted herein are planning level accuracy, and intended for informational purposes only. Distances and locations 326 3 may be distorted at this scale. Always consult with the proper legal documents or agencies regarding such features. 327 4 108

328 4

Direct Radiation Monitoring ISFSI & Selected REMP TLDs - Quarterly Gamma Exposure (mR/ std quarter) 25 Unit 1 Large Component Removal 20 15 Start Spent Fuel Storage 10 5

0 TLD 31 - 18.6 miles NNW TLD 56 ISFSI 318 TLD 59 TLD 55 ISFSI 321 Figure 6A 109

Appendix K Offsite Ground Water Sampling 110

Offsite Groundwater Data No drinking water pathway exists at SONGS. Refer to Figures 7-1 for a general indication of groundwater flow in the vicinity of SONGS.

In 2011 four (4) offsite groundwater and sediment samples were collected near the surf zone due southwest from the North Industrial Area (NIA). The analysis results were less than detectable for tritium and plant related gamma emitters.

We conclude that the operation of SONGS had no impact on drinking water wells in the vicinity of SONGS.

111

N EL D AV O CA PIC M

IN O

RE AL Sector A N

Sector R NNW ORAN Sector B GE C SAN MAT EO O UNT NNE SAN D RD IEGO Y CR D

AV ITO COUN S

DE EL SR IST D

TY AL LP RE Sector Q RE SID CAMINO IAN NW TE EN Sector C

Well

#6 #

61521 NE

61511 5-mile Sector P radius WNW BASILONE RD Sector D 52028 ##

- 52023 ENE Figure 7-1 Drinking Water Wells 2-mile radius 1-mile Units 2/3 Midpoint radius

Drinking Water Wells 5-mile Sector N radius W Sector E Groundwater Flow Direction SONGS Facilities E

County Boundary Freeway Highway Major Road 5-mile Railroad radius OLD Y

µ HW Sector M 10 1 Sector F WSW ESE 0.5 0 0.5 Miles File Name: 2011AREOR_Figure7-1_11x8.mxd Path:

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\SONGS\AREOR\MXD\AREOR2011 03/07/2012 Sector L SW Sector K Sector H Sector G §

¨5 Reproduced with permission granted by THOMAS BROS MAPS Sector J SE

© Thomas Bros. Maps. All rights reserved. SSW SSE Features depicted herein are planning level accuracy, and S intended for informational purposes only. Distances and locations may be distorted at this scale. Always consult with the proper legal documents or agencies regarding such features.

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