ML081350336

ISFSI 2007 Annual Radiological Environmental Operating Report

ML081350336
Person / Time
Site:	San Onofre
Issue date:	05/13/2008
From:	Scherer A Southern California Edison Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML081350336 (123)

Text

SOUTHERN CALIFORNIA A. Edward Scherer EDISON" Director Nuclear Regulatory Affairs An EDISON INTERNATIONAL@ Company May 13, 2008 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555

Subject:

Docket Nos. 50-206, 50-361, 50-362 and 72-41 2007 Annual Radiological Environmental Operating Report San Onofre Nuclear Generating Station Units I , 2 and 3 and lndependent Spent Fuel Storage Facility

Dear Sir or Madam:

As required by Technical Specification (TS) Section D6.9.l.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-10 and NPF-15 for SONGS Units 2 and 3, respectively, this letter transmits the 2007 Annual Radiological Environmental Operating Report (AREOR) for SONGS Unit 1 and SONGS Units 2 and 3.

The AREOR covers the operation of SONGS Unit 1 and SONGS Units 2 and 3 during the calendar year 2007 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 lndependent Spent Fuel Storage Installation.

If you require any additional information, please contact Mr. Clay Williams at (949) 368-6707.

Sincerely, Enclosure P.O. Box 128 San Clemente, CA 92674

Document Control Desk May 13, 2008 cc: E. E. Collins, Regional Administrator, NRC Region IV J. E. Whitten, Region IV, San Onofre Unit 1 M. C. Hay, NRC Region IV, San Onofre Units 2 & 3 N. Kalyanam, NRC Project Manager, San Onofre Units 2, and 3 J. C. Shepherd, NRC Project Manager, San Onofre Unit 1 C.C. Osterholtz, NRC Senior Resident Inspector, San Onofre Units 2 and 3 S. Y. Hsu, California Department of Public Health

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 2008

2007 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT San Onofie Nuclear Generating Station UNITS 1,2, & 3 Southern California Edison An Edison International Company Prepared by: N.A Hansen Approved by: R.K. Heckler Approved by: M.J. Johnson Appr0ved.b~:R.T. Corbett Approved by: 0.E. Flores APRIL 2008

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

SUMMARY

/ INTRODUCTION ....................................................................................... 1 Objectives ............................................................................................................................................. 2 Sample Collection................................................................................................................................. 2 Sources of Radioactivity ....................................................................................................................... 2 Exposure Pathway................................................................................................................................. 3 Regulatory Limits, Guidance, and Requirements ................................................................................. 3 Data Management ................................................................................................................................. 5 Detection Limit Terminology ............................................................................................................... 6 Conclusion ............................................................................................................................................ 7 References............................................................................................................................................. 8 APPENDIX A - Sample Type and Sampling Location .............................................................................. 9 Table A-1 REMP Sample Locations .................................................................................................. 10 Table A-2 Sector and Direction Designation for REMP Sample Location Map ............................... 15 Figure 5-1 San Onofre REMP - One Mile Radius.............................................................................. 16 Figure 5-2 San Onofre REMP - Two Mile Radius ............................................................................. 17 Figure 5-3 San Onofre REMP - Five Mile Radius ............................................................................. 18 Figure 5-4 San Onofre REMP - 30 Mile North .................................................................................. 19 Figure 5-5 San Onofre REMP - 45 Mile South .................................................................................. 20 APPENDIX B - Summary, Results, and Discussions of 2007 Environmental Data................................ 21 Summary ........................................................................................................................................... 22 Results and Discussions of 2007 Environmental Data ....................................................................... 23 Table B-1 Summary of SONGS Related Gamma Isotopic Analysis Confirmed above MDC.......... 29 Table B-2 REMP Sample Analysis Summary for 2007 .................................................................... 30 i

Statistical Summary of Remp Data for 2007 ...................................................................................... 31 Table 1A Quarterly Gamma exposure (millirem)..................................................................... 32 Table 2 Weekly Airborne Particulates - Gross Beta Activity................................................ 33 Table 3 Weekly Radioiodine I-131 Activity.......................................................................... 34 Table 4A Quarterly Composite Airborne Particulates Gamma ................................................ 35 Table 5 Monthly Ocean Water Gamma Spectral Analysis .................................................... 36 Table 7 Quarterly Composite Ocean Water Tritium Activity................................................ 38 Table 9A Monthly Drinking Water Analysis............................................................................ 39 Table 10 Semi-Annual Shoreline Sediment Gamma Spectral Analysis .................................. 42 Table 11 Semi-Annual Ocean Bottom Sediment Gamma Spectral Analysis .......................... 43 Table 12A Semi-Annual Non-Migratory Marine Animals Analysis - Flesh............................. 44 Table 13A Semi-Annual Local Crops Gamma Spectral Analysis............................................. 50 Table 14 Annual Soil Analysis ................................................................................................ 53 Table 15 Semi-Annual Kelp Analysis ..................................................................................... 54 APPENDIX C - Summary of 2007 Quality Control Programs ................................................................ 55 Interlaboratory Cross-Check Program ................................................................................................ 56 Quarterly Duplicate TLDs .................................................................................................................. 57 Annual Duplicate TLDs...................................................................................................................... 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................. 64 Comparison of Operational to Preoperational Data and Analysis of Trends...................................... 65 Table D - 1A Shoreline Sediments Concentration (pCi/g, wet weight) PreOperational and Operational Data SONGS Units 2/3 ............................................................................................ 70 Table D-1B Ocean Bottom Sediments Concentration (pCi/g, wet weight) PreOperational and Operational Data SONGS Units 2/3 ............................................................................................ 70 Table D-2 Marine Species Concentrations (pCi/g, wet weight) PreOperational and Operational Data SONGS Units 2/3................................................................................................................................ 72 ii

Table D-3 Soil PreOperational and Operational Data (pCi/g, wet weight) SONGS Units 2/3.......... 77 Table D-4 Kelp PreOperational and Operational Data (pCi/g, wet weight) SONGS Units 2/3 ........ 77 APPENDIX E - Deviations from ODCM Sampling Requirements in 2007 ............................................ 78 Deviations from ODCM Sampling Requirements in 2007................................................................. 79 Part I Terrestrial Sampling.......................................................................................................... 79 Part II Marine Sampling............................................................................................................... 83 APPENDIX F - Land Use Census ............................................................................................................ 84 Introduction......................................................................................................................................... 85 The Study Area ................................................................................................................................... 85 Methodology ....................................................................................................................................... 85 Definitions........................................................................................................................................... 85 Table F-1 2007 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet .................................... 89 Table F-2 2007 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet .................................... 90 Table F-3 2007 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet .................................... 91 APPENDIX G - Figures for 2007 ............................................................................................................. 92 Figure 1 Potential Radiation Exposure Pathways Leading to Man................................................. 93 Figure 2A Direct Radiation Monitoring 1981 to 1999....................................................................... 94 Figure 2B Direct Radiation Monitoring 1995 to 2007....................................................................... 95 Figure 3A Monthly Average Airborne Particulates Gross Beta Activity Preoperational and Operational Data for SONGS Unit 2/3 ............................................................................................... 96 Figure 3B Monthly Average Airborne Particulates Gross Beta Activity SONGS Units 2 and 3 from Jan 1988 to Dec 1997.......................................................................................................................... 97 Figure 3C Monthly Average Airborne Particulates Gross Beta Activity SONGS Units 2 and 3 Jan 1998 to Dec 2007 ................................................................................................................................ 98 Figure 3D Weekly Airborne Particulate Gross Beta Activity SONGS Units 2 and 3 January to December 2007 ................................................................................................................................... 99 Figure 4 I-131 In Aquatic Kelp .................................................................................................... 100 iii

APPENDIX H - Errata to the 2006 AREOR .......................................................................................... 101 APPENDIX I - REMP TLD's Co-located with DHS TLDs During 2007.............................................. 102 APPENDIX J - ISFSI TLD DATA......................................................................................................... 104 Table J-1 ISFSI TLD DATA .......................................................................................................... 106 Table J-2 REMP TLD DATA for TLDs within the EAB............................................................... 108 Figure 6-1 ISFSI TLDs and REMP TLDs within the EAB.............................................................. 110 Figure 6-2 ISFSI TLDs and Selected REMP TLDs near to the ISFSI Foundation.......................... 111 Figure 6A Direct Radiation Monitoring ISFSI & Select REMP TLDs - Quarterly Gamma Exposure (Mr/STD Quarter) ............................................................................................................................. 112 APPENDIX K - Local Drinking Water Wells ....................................................................................... 113 Figure 7-1 Drinking Water Wells ..................................................................................................... 115 iv

Executive Summary The data from the San Onofre Nuclear Generating Station (SONGS) Radiological Environmental Monitoring Program (REMP) clearly indicate that SONGS had no measurable radiological environmental impact during 2007.

Preparation of the 2007 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. Excluding naturally occurring radionuclides, approximately 5% of the 2007 SONGS REMP data set was above the critical level (1.64 sigma),

which is characteristic of a database of values statistically equal to zero. The data have been summarized in the Statistical Summary of REMP Data found in Appendix B. The plant related radionuclides (Cs-137 in soil and sediment, as well as I-131 in kelp) detected above the a posteriori minimum detectable concentration (MDC) may be 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. The naturally occurring radionuclides (Be-7, K-40, and Th-228) detected were observed in both control and indicator locations at substantially similar concentrations and are not related to the operation of SONGS.

The balance of 2007 SONGS REMP database displays behavior statistically equal to a null set.

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 June 1967 and was permanently retired from service in November 1992. Units 2/3 attained initial criticality in July 1982 and August 1983, respectively, and have been in operation to date.

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 which have a potential radiation exposure pathway to man.

Thermoluminescent dosimeters (TLDs) were 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 Offsite Dose Calculation Manual (ODCM).

To conform with 10CFR Part 50, Appendix I, Section IV-B.2, measured radioactivity concentrations in the environmental samples have been compared against predicted (calculated) ones 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.

1

A land use census was performed in 2007 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 and the Technical Specifications.

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 1, 2 and 3 have no measurable (detrimental) effects on the health and safety of the public or 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 determined 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.

SOURCES OF RADIOACTIVITY Plant-specific radionuclides are produced in the normal operation of a nuclear power plant. Most of the fission products are retained within the fuel and its cladding. A small fraction of fission products such as cesium-137 (Cs-137) and iodine-131 (I-131), and activation products such as cobalt-60 (Co-60), are present in the primary reactor cooling system. Noble gases are also produced during the fission process.

Radioactive liquid and gaseous waste releases to the ocean and the atmosphere may contain very minute concentrations of plant-produced radionuclides. The airborne radioactive noble gases released are mostly xenon and krypton, which are inert (non-reactive). They do not concentrate in the body, but they may contribute to human radiation exposure as an immersion source for whole body exposure. Xenon-133 and argon-41 are the major radioactive noble gases released 2

to the atmosphere, and their calculated offsite beta and gamma air doses are no greater than 0.1 mrad per year.

The releases of iodines and particulates in the gaseous and liquid effluents are small. The major radionuclides of interest are I-131, Cs-134, Cs-137, Co-58, and Co-60. The total releases for these radionuclides were well below applicable regulatory limits.

Tritium (H-3), the radioactive isotope of hydrogen, is the predominant radionuclide in the liquid effluents and is also present in gaseous effluents. Tritium is produced in the reactor water (coolant) as a result of boron activation and other nuclear reactions.

EXPOSURE PATHWAY Figure 1 illustrates various exposure pathways resulting in radiation dose to the surrounding population from operation of a nuclear facility. Only a few pathways will have real dose potential and require detailed calculations.

a. External Exposure External exposure to people during normal operations will include radioactive gases in gaseous effluent plumes, radionuclides deposited on soil, and vegetation, or shoreline sediments. Direct exposure from radionuclides in water during recreation or commercial fishing activity is insignificant. Accumulation in sediments has the greater potential as a source of exposure. Gamma dosimeters (TLDs) are the usual means of measuring direct radiation exposure since significant dose contributors are gamma-emitters.

b. Internal Exposure The release of radioactivity in liquid effluents involves pathways such as fish consumption and direct exposure from the ocean water by swimming and the shoreline activities. Consumption of fish or crops from the area receiving liquid effluents and breathing noble gases from the gaseous effluents releases are the most probable sources of internal exposure.

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. The standards for normal operation recommended that the dose from all discharges of radioactivity should not exceed 25 mrem/yr. These limits are applicable to the sum of both liquid and gaseous 3

effluents and direct radiation. The environmental doses calculated at SONGS are a small fraction of the dose limits established by the EPA.

• 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

• 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 (TLD's)

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

• Regulatory Guide 4.15 4

Quality Assurance for Radiological Monitoring Programs (Normal Operations) -

Effluent Streams and the Environment, 1979

• 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 Southern California Edison (SCE). 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 2007 Land Use Census (Appendix F).

All Radiological Environmental Monitoring activities for San Onofre are assessed in accordance with Quality Assurance requirements as defined in Regulatory Guide 4.15. 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. Refer to Appendix C.

5

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 should 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, counter 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.

The 2007 SONGS REMP data required by the ODCM have been summarized in the Statistical Summary of REMP Data found in Appendix B.

6

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.

Radiological environmental data collected throughout 2007 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.

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 2007 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 2007 has been negligible, and the resulting dose to man is negligible.

7

REFERENCES

1. 10CFR20, 10CFR50

2. Land Use Census for SONGS Units l, 2 and 3 Radiological Environmental Monitoring Program, October 2007.

3. ODCM (Offsite Dose Calculation Manual) for SONGS Unit 1 and Units 2/3, Section 5.0, 2007.

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

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

Application to Radiochemistry, Analytical Chemistry, vol. 40 pp. 586-593 8

APPENDIX A SAMPLE TYPE AND SAMPLING LOCATION 9

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

(Out of sequence 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 3.5 N 3 Camp San Onofre - MCB 2.6 NE 4 Camp Horno - MCB 4.5 E 6 Old Route 101 (East-Southeast) 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 5.0 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 (Control) 18.6 NNW 33 Camp Talega - MCB 5.7 N 34 San Onofre School - MCB 1.9 NW 35 Range 312 - MCB 4.7 NNE 36 Range 208C - MCB 4.2 NE 38 San Onofre State Beach Park 3.3 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

• Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint. 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 Corp Base Camp Pendleton PIC Pressurized Ion Chamber 10

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

(Out of sequence sample numbers are due to program modifications) (miles) (Sector)

Direct Radiation (Continued) 46 San Onofre State Beach Park 0.9 SE 47 Camp Las Flores - MCB 8.6 SE 49 Camp Chappo - MCB 12.8 ESE 50 Oceanside Fire Station (Control) 15.6 SE 53 San Diego County Operations Center 44.3 SE 54 Escondido Fire Station 31.8 ESE 55 San Onofre State Beach (U1 West) 0.2 ** W 56 San Onofre State Beach (U1 West) 0.2 ** W 57 San Onofre State Beach (Unit 2) 0.1 ** WSW 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) 0.6 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 4.3 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 4.3 N 78 Sheep Valley 4.4 ESE

• Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint. 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 Corp Base Camp Pendleton PIC Pressurized Ion Chamber 11

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

(Out of sequence 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 14 Mesa Medical Facility 0.7 NNW 15 Oceanside City Hall (Control) 15.6 SE Soil Samples ***

1 Camp San Onofre 2.6 NE 2 Old Route 101 - East Southeast 3.0 ESE 3 Basilone Road / I-5 Freeway Off ramp 2.0 NW 5 Former Visitor=s Center 0.4 ** NW 6 Oceanside (Control) 16.0 SE

• Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint. 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 Corp Base Camp Pendleton PIC Pressurized Ion Chamber 12

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

(Out of sequence sample numbers are due to program modifications) (miles) (Sector)

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 51 Unit 2 Conduit 0.1 SW 52 Unit 3 Conduit 0.1 SSW Drinking Water 4 Camp Pendleton Drinking Water Reservoir 2.2 NNW 5 Oceanside City Hall (Control) 15.6 SE 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 1 San Clemente Ranch (San Mateo Canyon) 2.6 NW 2 Oceanside (Control) 15-25 SE to ESE 4 San Clemente Residence (Ola Vista) with Garden 4.4 NW 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) 18.2 NW

• Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint. Direction determined from degrees true north.

• • • Soil samples are not required by Technical Specifications.

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

MCB Marine Corp Base Camp Pendleton PIC Pressurized Ion Chamber 13

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

(Out of sequence sample numbers are due to program modifications) (miles) (Sector)

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 (0.6 mile West) 0.8 SSW C Unit 2 Outfall 1.6 SW D Unit 3 Outfall 1.2 SSW E Laguna Beach (Control) 18.2 NW F SONGS Upcoast 0.9 WSW 51 Unit 2 Conduit 0.1 SW 52 Unit 3 Conduit 0.1 SSW

• Distance (miles) and Direction (sector) are measured relative to Units 2/3 midpoint. Direction determined from degrees true north.

• • • Soil samples are not required by Technical Specifications.

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

MCB Marine Corp Base Camp Pendleton PIC Pressurized Ion Chamber 14

TABLE A-2 SECTOR AND DIRECTION DESIGNATION FOR REMP SAMPLE LOCATION MAP DEGREES TRUE NORTH FROM SONGS 2 AND 3 MIDPOINT NOMENCLATURE Sector Center Sector 22.50 Limit Line Limit Sector Direction 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 15

Figure 5-1 San Onofre REMP One-Mile Radius

• Units 213 Midpoint Airsampler T Crop Non-Migratory Marine Animals (NMMA)

Ocean Bottom Sediment (OBS)

Ocean Water

+ Shoreline Sediment

@ TLD

-Freeway

-Major Road

-Local Street Railroad S

0.25 0 0.25 D I Miles File Name: 2 0 0 7 A R E O R ~ F i g u r e ~ l ~ l 1 ~ 8 . m d Date: 03/20/2008 Reproduced vnh permlsslon granted by THOMAS BROS MAPS @

OThomas Bros Maps All nghts reserved S Features depicted herein are planning level accuracy, and Ocean Water Sample C intended for informational purposes only. Distances and locations ma be distded at this scale. Always consult wim me proper L a l documents or agencies regarding such I3 Page 16 features. O Corncrate Real Estate Demrtment. R E 0 -

S u m y and ~ a p i l n g Section.

PACIFIC OCEAN Figure 5-2 San Onofre REMP Two-Mile Radius Units 213 Midpoint Air Sampler Drinking Water Non-Migratory Marine Animals (NMMA)

Ocean Bottom Sediment (OBS)

Ocean Water

+ Shoreline Sediment soil

@ TLD

- Freeway

-Major Road

-Local Street Railroad N

Miles File Name: 2007AREOR~Figure52~1Ix8.md Date: 03/20/2008 Reproduced vnh permlsslon granted by THOMAS BROS MAPS @

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PACIFIC OCEAN Figure 5-3 San Onofre REMP Five-Mile Radius Units 213 Midpoint Air Sampler Drinking Water Non-Migratory Marine Animals (NMMA)

Ocean Bottom Sediment (OBS)

Ocean Water

+ Shoreline Sediment soil

@ TLD

-Freeway

-Major Road

-Local Street Railroad N

1 0 1

- 9 I Miles File Name: 2007AREOR~Figure53~1Ix8.md Date: 03/20/2008 Reproduced vnh permlsslon granted by THOMAS BROS MAPS @

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radius Figure 5-4 San Onofre REMP 30-Mile North

• - Units 213 Midpoint Airsampler T Crop Drinking Water Kelp Non-Migratory Marine Animals (NMMA)

Ocean Bottom Sediment (OBS)

Ocean Water

+ Shoreline Sediment

@ TLD

-Freeway

-Highway

-Major Road Miles File Name: 2007AREOR~Figure54~1Ix8.md Date: 03/20/2008 Reproduced vnh permlsslon granted by THOMAS BROS MAPS @

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Figure 5-5 San Onofre REMP 45-Mile South cities

• Units 213 Midpoint Airsampler T Crop Drinking Water Kelp Non-Migratory Marine Animals (NMMA)

Ocean Bottom Sediment (OBS)

Ocean Water

+ Shoreline Sediment soil

@ TLD

-Freeway

-Highway Railroad 5 0 Miles File Name: 2007AREOR~Figure55~1Ix8.md 5

I Date: 03/20/2008 Reproduced vnh permlsslon granted by THOMAS BROS MAPS @

OThomas Bros Maps All nghts reserved Page 20

APPENDIX B

SUMMARY

, RESULTS, AND DISCUSSIONS OF 2007 ENVIRONMENTAL DATA 21

SUMMARY

To assess the changes or trends in the radioactivity level in the environment over the past year, the data from January 2007 to December 2007 were evaluated. The 2007 REMP data were evaluated according to the criteria described in NUREG/CR-4007 and with the methodology described by Currie (1968).* 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. It should be noted that in an ideal database with the "true" value of each data point equal to zero, five (5)% of the values should be expected to be above the critical level. Excluding natural radionuclides (Be-7, K-40 and Th-228), approximately 5% of the data listed in the Statistical Summary of REMP Data are above the critical level. Thus the 2007 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 2007 appears in Table B-2.

As noted above, the SONGS REMP data base behaves substantially similar to a data base with values statistically indistinguishable from zero for station related isotopes. The exceptions, summarized in Table B-1, include seven (7) isotopically analyzed samples with station related activity reported above the a posteriori MDC. All sample values were significantly less than the NRC reporting levels. I-131 was detected in kelp and Cs-137 was detected in soil. These radionuclides have been detected in control as well as indicator locations in previous years.

Cs-137 is commonly detected in environmental sediment samples because of fallout from weapons testing. 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 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, including those routed to the Pacific Ocean. I-131 has been detected in control and indicator kelp samples, suggesting that the source of the I-131 is external to SONGS. See Table B-1 for data. We conclude that SONGS had a negligible radiological environmental impact during 2007.

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 22

RESULTS AND DISCUSSIONS OF 2007 ENVIRONMENTAL DATA A. Direct Radiation The purpose of this program element was to measure the quarterly environmental gamma radiation in the vicinity of SONGS. To accomplish this task, calcium sulfate (CaSO4) thermoluminescent dosimeters (TLDs) were placed at 38 indicator and 11 control locations.

They were collected and analyzed quarterly in accordance with ANSI-N545 standards. TLDs within five miles of SONGS were considered indicator locations. TLDs located greater than five miles from SONGS were considered control locations. The indicator locations are selected as inner and outer rings as required by the SONGS Offsite Dose Calculation Manual (ODCMs).

Additional TLDs are placed at locations of interest such as schools and hospitals.

Six laboratory control TLDs were analyzed quarterly. TLD numbers 17, 18, and 60 are used for background dose normalization. TLDs #A and #B are used 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. The average indicator location dose was 16.90 mR with a range of 10.37 to 32.85 mR. The average control location dose was 15.80 mR with a range of 12.62 to 21.17 mR.

The routine 2007 REMP TLD data has been grouped into four categories based on distance from SONGS for the purposes of trending any correlation between distance from SONGS and total annual dose.

2007 REMP TLD data (Average Dose vs. Distance from SONGS)

Average Quarterly Dose in mR TLDs 0.5 miles from SONGS 19.28 TLDs > 0.5 miles AND 1.0 mile from SONGS 14.70 TLDs > 1.0 mile AND 5.0 miles from SONGS 16.48 TLDs > 5 miles from SONGS (Control TLDs) 15.80 These data indicate no correlation between total dose and distance from SONGS. The variations in the average dose is approximately equal to the median two sigma variation of measurement (1.7 mR per quarter). Statistically, the control and indicator doses are the same value. The routine indicator location at the South Yard Facility (0.4 miles ESE from the Units 2/3 midpoint) had the highest TLD average in 2007. The operation of SONGS had no impact on the environment as measured by this sample medium.

Figure 2A compares environmental radiation levels of indicator and control locations for the operational year 2007 and for previous years. This figure shows the close correlation between the control and indicator location TLD dose data.

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 ISFSI (Independent Spent Fuel Storage Installation) 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 eight indicator locations and from one control location. 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 Unit 1 and Units 2/3 Offsite Dose Calculation Manuals.

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 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.

Nearly 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 0.0084-0.0631 pCi/m3, averaging 0.0264 pCi/m3 of air. The concentrations of gross beta activity in the samples from the control location ranged from 0.0109 to 0.0592 pCi/m3, averaging 0.0263 pCi/m3 of air. Figure 3D shows the variation in gross beta activity level in 2007 at different locations. This graph show a close correlation between the indicator and control location data.

Per the requirements of the SONGS 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 2007 was 0.0517 pCi/m3 and the 2006 control location average was 0.0235 pCi/m3. No action was taken since no indicator location value exceeded ten times the annual average gross beta activity of the control location data from the previous year.

All samples analyzed for I-131 were less than the a posteriori MDC and all I-131 samples were less than the a priori lower limit of detection (LLD). The airborne indicator and control I-131 REMP samples taken in 2007 at SONGS were statistically indistinguishable from zero.

No samples yielded station related isotopic results confirmed above the a posteriori MDC.

Quarterly composite gamma spectral analysis analyses yielded only naturally occurring beryllium-7 (Be-7) above the a posteriori MDC.

24

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 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.

Four non-ODCM ocean water 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. The conduit sample results are included in the statistical summary.

Throughout 2007, only naturally occurring K-40 was detected in the monthly gamma spectral analyses of ocean water. No station related radionuclides were detected above the a posteriori MDC in this sample type during 2007.

Naturally occurring potassium-40 (K-40) was detected in all ocean water samples obtained in 2007. No SONGS related radionuclides were detected in this sample medium during 2007.

Excluding K-40, the ocean water gamma isotopic database is statistically indistinguishable from a database with zero activity.

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

D. Drinking Water In 2007, 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 26 naturally-occurring and SONGS-related gamma emitting radionuclides. There is no drinking water pathway for liquid effluent at SONGS.

No station related radionuclides were detected in drinking water during 2007. 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 2007 from three indicator locations and from a control location situated in Newport Beach. After collection, the samples were analyzed for 26 different plant-related and naturally-occurring radionuclides. Only naturally occurring K-40 and thorium 228 (Th-228) were detected. 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 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 26 naturally-occurring and station-related radionuclides. K-40 and Th-228 were detected in all ocean bottom sediment samples collected during 2007.

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 2007, all the conduit sample analysis results were below the MDC for station related radionuclides.

We conclude that the operation of SONGS had no significant 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 26 gamma-emitting station-related and naturally occurring radionuclides. The results were subsequently reported to Edison 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 confirmed above the a posteriori MDC.

Naturally-occurring K-40 was detected in most marine species samples collected during 2007.

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 2007 from the SONGS garden and from the control location 21 miles from SONGS Units 2/3 midpoint in sector F. The crop samples were analyzed quantitatively for 26 gamma-emitting radionuclides, both natural and plant related. Only naturally occurring radionuclides were detected. 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, 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 26

3 inches. The sampling protocol is consistent with the procedure described in HASL-300. Soil sampling is not required by ODCMs.

Soil samples were analyzed for 26 naturally-occurring and SONGS-related gamma-emitting radionuclides using gamma spectral analysis. All 2007 soil samples yielded naturally occurring K-40 and Th-228. Cs-137, above the a posteriori MDC, was detected in three indicator samples, as well as the control sample. Cs-137 is often detected in environmental sediment samples and the presence of Cs-137 is most likely related to nuclear weapons testing fallout.

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. The Cs-137 activity can be attributed to atmospheric nuclear weapons tests and not SONGS operations. During 2007, the operation of SONGS had no impact on the environment as measured by this sample medium.

J. Kelp Sampling Kelp was collected during April and October 2007 from the San Onofre kelp beds, San Mateo kelp beds, Barn kelp beds, and from the Salt Creek control location. Upon collection, the samples were analyzed by gamma-spectral analysis for 26 different naturally-occurring and Station-related radionuclides. The radionuclides detected in 2007 were, K-40 and I-131. K-40 is naturally occurring and not related to the operation of SONGS. I-131 was detected in one control sample and two indicator samples. I-131 is often detected in Sewage Plant outfalls, including those routed to the Pacific Ocean.

I-131 has been detected at indicator and control locations in previous years. The northern control location is too far away and in the predominantly upstream current direction for the I-131 activity to be attributable to SONGS. The presence of low levels of I-131 in both the indicator and the control locations suggest a source which is external to SONGS. The I-131 activity 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.

K. Correlation of Effluent Concentrations to Concentrations in the Environment In accordance with 10 CFR 50 Appendix I, a correlation study was generated to estimate the environmental concentration of selected radionuclides using the methodology outlines in Reg.

Guide 1.109 and basing the projected environmental concentrations on actual SONGS effluent data. The predicted environmental concentrations of the radionuclides listed in the ODCM Table 5-3 for all ODCM identified environmental media are much less than the associated environmental a priori LLD and the lower, count specific, a posteriori MDC. With two exceptions, the measured concentrations of these radionuclides are also less than the a posteriori MDC. The exceptions are Cs-137 in soil and I-131 in Kelp.

27

The REMP soil Cs-137 levels in the control and indicator samples are about 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 and Chernobyl. The predicted concentration for Cs-137 in soil (based on effluent data) 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.

The SONGS REMP indicator and control kelp samples have historically contained equal concentrations of I-131. The I-131 concentration in the control kelp sample location, approximately twelve (12) miles from SONGS in the predominantly upstream direction, has historically been slightly higher than the indicator locations. Kelp has a very large biomagnification factor and can concentrate very low concentrations of I-131 in ocean water to detectable I-131 levels in kelp. The SONGS I-131 liquid effluent release data are too low to account for the I-131 in Kelp at the indicator and control locations. We conclude that the I-131 in Kelp is probably attributable to sewage treatment plant discharges in the predominantly upstream direction, near the kelp control location.

28

TABLE B-1 Summary of SONGS related Gamma Isotopic Analyses confirmed above MDC Sample Media & location Radionuclide Sample Value MDC (a posteriori)

Aquatic Kelp San Onofre Kelp Bed I-131 (83 +/- 24) E-3 pCi/g 30 E-3 pCi/g Station A 17APR07 Aquatic Kelp Barn Kelp Bed I-131 (38 +/- 19) E-3 pCi/g 26 E-3 pCi/g Station C 17APR07 Aquatic Kelp Salt Creek (Control) I-131 (35 +/- 20) E-3 pCi/g 29 E-3 pCi/g Station E 17APR07 Soil Camp San Onofre Cs-137 (133 +/- 28) E-3 pCi/g 35 E-3 pCi/g Location # 1 17SEP07 Soil Old El Camino Real Cs-137 (67 +/- 16) E-3 pCi/g 20 E-3 pCi/g Location #2 17SEP07 Soil Basilone Road Cs-137 (19 +/- 11) E-3 pCi/g 17 E-3 pCi/g Location # 3 17SEP07 Soil Oceanside Control Cs-137 (132 +/- 17) E-3 pCi/g 14 E-3 pCi/g Location #6 17SEP07 29

TABLE B-2 REMP SAMPLE ANALYSIS

SUMMARY

FOR 2007 Sampling # of Total # of Medium Analysis Type Frequency Locations Analyses in 2007 1

Direct Radiation Dosimetry Quarterly 49 194 2, 3 Airborne Particulates Gross Beta Weekly 10 475 2, 3 Charcoal Cartridge I-131 Weekly 10 470 Airborne Particulates Ge (Li) Scan Quarterly 10 37 Ocean Water Ge (Li) Scan Monthly 4 48 Ocean Water H-3 Quarterly 4 16 Ocean Water Conduit Ge (Li) Scan Semi-Annually 2 4 4

Drinking Water, Ge (Li) Scan Monthly 3 36 Unfiltered H-3 3 36 Gross Beta 3 36 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 30 Crops Ge (Li) Scan Semi-Annually 2 8 Kelp Ge (Li) Scan Semi-Annually 4 5 Soil Ge (Li) Scan Annually 5 5

1. Two (2) TLDs were missing in 2007. See Appendix E for details.

2. Includes location # 30 compensatory air sampler for fire damaged # 13

3. As per SONGS REMP air sampling procedure additional particulate samples were collected during the October wildfires. No additional I-131 samples were collected. See Appendix E for discussion.

4. The total number of analyses include data from drinking water well #6, San Clemente.

30

STATISTICAL

SUMMARY

OF REMP DATA FOR 2007 31

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Quarterly Gamma Exposure - Table 1A (mR/std quarter)

Gamma 194 5 16.90 (151/151) South Yard Facility, 28.96 (4/4) 15.80 (43/43)

(10.37 - 32.85) 0-4, ESE (24.77 - 32.85) (12.62 - 21.17)

(1) Indicator location TLDs include all REMP TLDs 5.0 miles or closer to SONGS 2/3 midpoint.

(2) Control location TLDs include all REMP TLDs more than 5.0 miles from SONGS 2/3 midpoint.

(3) TLD data excludes QC TLDs, transit dose TLDs, and ISFSI TLDs.

32

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Weekly Airborne Particulates Gross Beta Activity - Table 2 (pCi/cu.m)

Gross Beta 475 0.01 0.0264 (423/423) AP-30 (AP13 0.0384 (10/10) 0.0263 (52/52) 0 (0.0084 - 0.0631) backup) (0.0181 - 0.0583) (0.0109 - 0.0592) 0.2 Mi. E 33

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Weekly Radioiodine I-131 Activity - Table 3 (pCi/cu.m)

I-131 470 0.07 0.0215 (24/418) Bluff 0.0300 (1/52) 0.0163 (4/52) 0 (0.0110 - 0.0350) 0.7 Mi. WNW (0.0300 - 0.0300) (0.0140 - 0.0190)

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. In 2007, all weekly iodine 131 cartridge analysis results were less than the a posteriori MDC (Minimum Detectable Concentration).

34

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Quarterly Comp. Airborne Particulates Gamma - Table 4A (pCi/cu.m)

Be-7 37 0.04 0.13 (33/33) Substitute (AP13 0.15 (1/1) 0.12 (4/4) 0 (0.0530 - 0.023) backup) (0.15 - 0.15) (0.0860 - 0.17) 0.2 Mi. E Cs-134 37 0.05 6.00E-4 (1/33) AWS Roof parking 6.00E-4 (1/4) < LLD (0/4) 0 (6.00E 6.00E-4) 0.18 Mi. NW (6.00E 6.00E-4) (-)

Cs-137 37 0.06 4.85E-4 (4/33) AWS Roof parking 8.20E-4 (1/4) <LLD (0/4) 0 (3.10E 8.20E-4) 0.18 Mi. NW (8.20E 8.20E-4) (-)

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 2007. All other air particulate quarterly composite analysis results 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 for Cs-134 (Cesium-134) and Cs-137 (Cesium-137) listed in this table are those values above the critical level and do not indicate that these radionuclides were detected in any samples.

35

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Ocean Water Gamma Spectral Analysis - Table 5 (pCi/l)

Ba-140 52 15 4.10 (2/40) (B) Outfall - Unit 2 4.30 (1/12) < LLD (0/12) 0 (3.90 - 4.30) 1.5 Mi SW (4.30 - 4.30) (-)

Co-58 52 15 2.50 (1/40) (C) Outfall -Unit 3 2.50 (1/12) < LLD (0/12) 0 (2.50-2.50) 1.2 Mi. SSW (2.50 - 2.50) (-)

Co-60 52 15 4.40 (1/40) (B) Outfall - Unit 2 4.40 (1/12) < LLD (0/12) 0 (4.40 - 4.40) 1.5 Mi. SW (4.40 - 4.40) (-)

Cs-134 52 15 3.60 (2/40) (C) Outfall - Unit 3 3.60 (2/12) 2.90 (1/12) 0 (2.70 - 4.50) 1.2 Mi. SSW (2.70 - 4.50) (2.90 - 2.90)

Cs-137 52 18 3.05 (2/40) (A) Station discharge 3.05 (2/2) < LLD (0/12) 0 (2.50 - 3.60) Outfall - Unit 1 (2.50 - 3.60) (-)

0.6 Mi. SW Fe-59 52 30 6.75 (2/40) (A) Station discharge 6.75 (2/12) 4.60 (1/12) 0 (5.40-8.10) Outfall - Unit 1 (5.40-8.10) (4.60-4.60) 0.6 Mi. SW I-131 52 15 7.96 (5/40) (B) Outfall - Unit 2 10.00 (2/12) 7.30 (1/12) 0 (5.50 - 11.90) 1.5 Mi. SW (8.10 - 11.90) (7.30 - 7.30)

K-40 52 150 326.35 (40/40) Unit 3 Conduit 354.50 (2/2) 313.08 (12/12) 0 (262.00 - 415.00) 0.1 Mi. SSW (316.00 - 393.00) (240.00 - 351.00) 36

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Ocean Water Gamma Spectral Analysis - Table 5 (pCi/l)

La-140 52 15 4.75 (2/40) (B) Outfall - Unit 2 5.00 (1/12) < LLD (0/12) 0 (4.50 - 5.00) 1.5 Mi. SW (5.00 - 5.00) (-)

Mn-54 52 15 3.58 (4/40) (B) Outfall - Unit 2 3.83 (3/12) 1.50 (1/12) 0 (2.80 - 4.40) 1.5 Mi. SW (3.20 - 4.40) (1.50 - 1.50)

Nb-95 52 15 < LLD (0/40) ---- (0/2) < LLD (0/12) 0

(-) (-) (-)

Zn-65 52 30 < LLD (0/40) ---- (0/2) < LLD (0/12) 0

(-) (-) (-)

Zr-95 52 15 5.13 (3/40) (B) Outfall - Unit 2 5.40 (1/12) 3.10 (1/12) 0 (4.90 - 5.40) 1.5 Mi SW (5.40 - 5.40) (3.10-3.10)

The naturally occurring radioactive isotope K-40 (Potassium 40) was detected in all SONGS Ocean water samples analyzed in 2007. 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 2007 (K-40) and the radionuclides listed in the ODCM (Offsite Dose Calculation Manual).

37

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Quarterly Composite Ocean Water Tritium Activity - Table 7 (pCi/l)

H-3 16 2000 < LLD (0/12) ---- (0/4) < LLD (0/4) 0

(-) (-) (-)

38

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Drinking Water Analysis -

Table 9A (pCi/l)

Ba-140 36 15 < LLD (0/24) ---- (0/12) < LLD (0/12) 0

(-) (-) (-)

Co-58 36 15 < LLD (0/24) ---- (0/12) < LLD (0/12) 0

(-) (-) (-)

Co-60 36 15 3.20 (1/24) San Clemente Golf 3.20 (1/12) 3.00 (1/12) 0 (3.20 - 3.20) Course Well (3.20 - 3.20) (3.00 - 3.00) 3.3 Mi. NW Cs-134 36 15 < LLD (0/24) Oceanside (Control) 3.17 (3/12) 3.17 (3/12) 0

(-) 15.6 Mi. SE (2.70 - 3.80) (2.70 - 3.80)

Cs-137 36 18 < LLD (0/24) ---- (0/12) < LLD (0/12) 0

(-) (-) (-)

Fe-59 36 30 < LLD (0/24) Oceanside (Control) 6.90 (1/12) 6.90 (1/12) 0

(-) 15.6 Mi. SE (6.90 - 6.90) (6.90 - 6.90)

Gross Beta 36 4 5.66 (24/24) Oceanside (Control) 7.05 (12/12) 7.05 (12/12) 0 (2.00 - 8.90) 15.6 Mi SE (2.70 - 9.40) (2.70 - 9.40)

H-3 36 2000 < LLD (0/24) ---- (0/12) < LLD (0/12) 0

(-) (-) (-)

I-131 36 15 4.80 (1/24) Oceanside (Control) 8.50 (1/12) 8.50 (1/12) 0 (4.80 - 4.80) 15.6 Mi SE (8.50 - 8.50) (8.50 - 8.50) 39

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Drinking Water Analysis -

Table 9A (pCi/l)

La-140 36 15 < LLD (0/24) ---- (0/12) < LLD (0/12) 0

(-) (-) (-)

Mn-54 36 15 3.60 (1/24) San Clemente Golf 3.60 (1/12) < LLD (0/12) 0 (3.60 - 3.60) Course Well (3.60 - 3.60) (-)

3.3 Mi. NW Nb-95 36 15 2.10 (1/24) Oceanside (Control) 3.90 (1/12) 3.90 (1/12) 0 (2.10 - 2.10) 15.6 Mi. SE (3.90 - 3.90) (3.90 - 3.90)

Zn-65 36 30 18.00 (1/24) Camp Pendleton 18.00 (1/12) < LLD (0/12) 0 (18.00 - 18.00) 2.2 Mi. NNW (18.00 - 18.00) (-)

40

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Monthly Drinking Water Analysis -

Table 9A (pCi/l)

Zr-95 36 15 5.20 (1/24) Oceanside (Control) 6.80 (1/12) 6.80 (1/12) 0 (5.20 - 5.20) 15.6 Mi. SE (6.80 - 6.80) (6.80 - 6.80)

During 2007 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.

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 2007 (Gross Beta) as well as those radionuclides listed in the ODCM (Offsite Dose Calculation Manual).

Starting in October 2006 San Clemente Well # 6 was sampled and analyzed as a courtesy to the City of San Clemente. This table includes the City of San Clemente drinking water analysis results.

41

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-annual Shoreline Sediment Gamma Spectral Analysis - Table 10 (pCi/g)

Cs-134 8 0.15 <LLD (0/6) --- (0/2) <LLD (0/2) 0

(-) (-) (-)

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

(-) (-) (-)

K-40 8 1.5 12.63 (6/6) Newport Beach North End 16.62 (2/2) 16.62 (2/2) 0 (9.12 - 15.70) 29.2 Mi. NW (16.19 - 17.05) (16.19 - 17.05)

Th-228 8 0.4 0.34 (6/6) Newport Beach North End 1.11 (2/2) 1.11 (2/2) 0 (0.16 - 0.49) 29.2 Mi. NW (0.78 - 1.44) (0.78 - 1.44)

During 2007 naturally occurring Th-228 (thorium 228) and K-40 (potassium 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 2007 (K-40 and Th-228) as well as those radionuclides listed in the ODCM (Offsite Dose Calculation Manual).

42

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported 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 < LLD (0/12) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Cs-137 14 0.18 0.0153 (3/12) Unit 3 Conduit 0.0170 (2/2) < LLD (0/2) 0 (0.0120 - 0.0220)) 0.1 Mi SW (0.0120 - 0.0220) (-)

K-40 14 1.5 16.16 (12/12) (B) Unit 1 Outfall 19.92 (2/2) 5.22 (2/2) 0 (13.02 - 20.17) 0.8 Mi SSW (19.66 - 20.17) (4.76 - 5.68)

Th-228 14 0.4 0.43 (12/12) (C) Unit 2 Outfall 0.79 (2/2) 0.0925 (2/2) 0 (0.0710 - 0.87) 1.6 Mi. SW (0.78 - 0.81) (0.0590 - 0.13)

During 2007, 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 2007 (K-40 and Th-228) as well as those radionuclides listed in the ODCM (Offsite Dose Calculation Manual).

43

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

Blacksmith Co-58 3 0.13 < LLD (0/1) ---- (0/1) < LLD (0/2) 0

(-) (-) (-)

Blacksmith Co-60 3 0.13 < LLD (0/1) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Blacksmith Cs-134 3 0.13 < LLD (0/1) ---- (0/1) < LLD (0/2) 0

(-) (-) (-)

Blacksmith Cs-137 3 0.15 < LLD (0/1) (C) Laguna Beach 0.0390 (1/2) 0.0390 (1/2) 0

(-) 18.2 Mi. NW (0.0390 - 0.0390) (0.0390 - 0.0390)

Blacksmith Fe-59 3 0.26 < LLD (0/1) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Blacksmith K-40 3 1.4 2.97 (1/1) (B) Units 2 and 3 2.97 (1/1) 2.96 (2/2) 0 (2.97 - 2.97) Outfall (2.97 - 2.97) (2.25 - 3.66) 1.5 Mi. SSW Blacksmith Mn-54 3 0.13 < LLD (0/1) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Blacksmith Zn-65 3 0.26 < LLD (0/1) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

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

44

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) 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 1.4 1.82 (4/4) (B) Units 2 and 3 1.99 (2/2) 1.73 (2/2) 0 (1.60 - 2.24) Outfall (1.74 - 2.24) (1.44 - 2.01) 1.5 Mi. SSW 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

(-) (-) (-)

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

45

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

Black Perch Co-58 2 0.13 < LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

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

(-) (-) (-)

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

(-) (-) (-)

Black Perch Cs-137 2 0.15 < LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

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

(-) (-) (-)

Black Perch K-40 2 1.4 3.70 (2/2) (A) Unit 1 Outfall 3.70 (2/2) < LLD (0/0) 0 (3.70 - 3.70) 0.9 Mi WSW (3.70 - 3.70) (-)

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

(-) (-) (-)

Black Perch 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.

46

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

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

(-) (-) (-)

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

(-) (-) (-)

Kelp Bass K-40 2 1.4 3.62 (2/2) (B) Units 2 & 3 Outfall 3.62 (2/2) < LLD (0/0) 0 (3.39 - 3.84) 1.5 MI. SSW (3.39 - 3.84) (-)

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.

47

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

Sheephead Co-58 5 0.13 < LLD (0/3) (C) Laguna Beach 0.0190 (1/2) 0.0190 (1/2) 0

(-) 18.2 Mi. NW (0.0190 - 0.0190) (0.0190 - 0.0190)

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

(-) (-) (-)

Sheephead Cs-134 5 0.13 < LLD (0/3) (C) Laguna Beach 0.0220 (1/2) 0.0220 (1/2) 0

(-) 18.2 Mi. NW (0.0220 - 0.0220) (0.0220 - 0.0220)

Sheephead Cs-137 5 0.15 < LLD (0/3) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

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

(-) (-) (-)

Sheephead K-40 5 1.4 3.35 (3/3) (B) Units 2 and 3 3.60 (1/1) 3.27 (2/2) 0 (3.19 - 3.60) Outfall (3.60 - 3.60) (2.82 - 3.71) 1.5 Mi. SSW Sheephead Mn-54 5 0.13 < LLD (0/3) (C) Laguna Beach 0.0200 (1/2) 0.0200 (1/2) 0

(-) 18.2 Mi. NW (0.0200 - 0.0200) (0.0200 - 0.0200)

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

(-) (-) (-)

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

48

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Non-Migratory Marine Animals (Flesh) Analysis - Table 12A (pCi/g)

Spiny Lobster Co-58 6 0.13 0.0180 (1/4) (A) Unit 1 Outfall 0.0180 (1/2) < LLD (0/2) 0 (0.0180 - 0.0180) 0.9 Mi. WSW (0.0180 - 0.0180) (-)

Spiny Lobster Co-60 6 0.13 0.0350 (1/4) (A) Unit 1 Outfall 0.0350 (1/2) < LLD (0/2) 0 (0.0350 - 0.0350) 0.9 Mi. WSW (0.0350 - 0.0350) (-)

Spiny Lobster Cs-134 6 0.13 0.0360 (1/4) (B) Units 2 and 3 0.0360 (1/2) < LLD (0/2) 0 (0.0360 - 0.0360) Outfall (0.0360 - 0.0360) (-)

1.5 Mi. SSW Spiny Lobster Cs-137 6 0.15 < LLD (0/4) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

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

(-) (-) (-)

Spiny Lobster K-40 6 1.4 3.44 (4/4) (B) Units 2 & 3 Outfall 3.66 (2/2) 3.46 (2/2) 0 (3.02 - 3.90) 1.5 Mi SSW (3.41 - 3.90) (2.81-4.10)

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

(-) (-) (-)

Spiny Lobster Zn-65 6 0.26 0.0660 (1/4) (A) Unit 1 Outfall 0.0660 (1/4) < LLD (0/2) 0 (0.0660 - 0.0660) 0.9 Mi. WSW (0.0660 - 0.0660) (-)

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

49

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Local Crops Gamma Spectral Analysis - Table 13A (pCi/g)

Lettuce Be-7 2 0.3 < LLD (0/0) Southeast of Oceanside 0.25 (1/2) 0.25 (1/2) 0

(-) 22 Mi SE (0.25 - 0.25) (0.25 - 0.25)

Lettuce Cs-134 2 0.06 < LLD (0/0) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Lettuce Cs-137 2 0.08 < LLD (0/0) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Lettuce I-131 2 0.06 < LLD (0/0) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Lettuce K-40 2 1 < LLD (0/0) Southeast of Oceanside 1.78 (2/2) 1.78 (2/2) 0

(-) 22 Mi SE (1.49 - 2.06) (1.49 - 2.06)

Sorrel Be-7 2 0.3 0.0660 (1/2) SONGS Garden 0.0660 (1/2) < LLD (0/0) 0 (0.0660 - 0.660) 0.4 Mi. NNW (0.0660 - 0.0660) (-)

Sorrel Cs-134 2 0.06 0.0250 (1/2) SONGS Garden 0.0250 (1/2) < LLD (0/0) 0 (0.0250 - 0.0250) 0.4 Mi. NNW (0.0250 - 0.0250) (-)

Sorrel Cs-137 2 0.08 < LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

50

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Local Crops Gamma Spectral Analysis - Table 13A (pCi/g)

Sorrel I-131 2 0.06 < LLD (0/2) ---- (0/2) < LLD (0/0) 0

(-) (-) (-)

Sorrel K-40 2 1 3.44 (2/2) SONGS Garden 3.44 (2/2) < LLD (0/0) 0 (3.12 - 3.75) 0.4 Mi NNW (3.12 - 3.75) (-)

Tomato Be-7 4 0.3 < LLD (0/2) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

51

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Number of Pathway sampled Number of Limit of Locations Location with Highest Annual Mean Control Locations Nonroutine (Unit of Analysis Detection Mean Mean Reported Measurement) Performed (LLD) (Range) Name, Distance Mean (Range) Measurements and Direction (Range)

Semi-Annual Local Crops Gamma Spectral Analysis - Table 13A (pCi/g)

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

(-) (-) (-)

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

(-) (-) (-)

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

(-) (-) (-)

Tomato K-40 4 1 2.14 (2/2) SONGS Garden 2.14 (2/2) 2.03 (2/2) 0 (1.56 - 2.71) 0.4 Mi. NNW (1.56 - 2.71) (1.61 - 2.44)

During 2007, 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 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 2007 (K-40 & Be-7) as well as those radionuclides listed in the ODCM (Offsite Dose Calculation Manual).

52

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Annual Soil Analysis - Depth 3 -

Table 14 (pCi/g)

Cs-134 5 0.15 < LLD (0/4) ---- (0/1) < LLD (0/1) 0

(-) (-) (-)

Cs-137 5 0.18 0.0730 (3/4) Camp San Onofre 0.13 (1/1) 0.13 (1/1) 0 (0.0190 - 0.13) 2.6 Mi. NE (0.13 - 0.13) (0.13 - 0.13)

K-40 5 1.5 13.97 (4/4) Basilone Road/I-5 18.48 (1/1) 2.52 (1/1) 0 (7.11 - 18.48) Freeway Offramp (18.48 - 18.48) (2.52 - 2.52) 2 Mi NW Th-228 5 0.4 0.56 (4/4) Basilone Road/I-5 0.80 (1/1) 0.16 (1/1) 0 (0.34 - 0.80) Freeway Offramp (0.80 - 0.80) (0.16 - 0.16) 2 Mi NW During 2007, 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 four 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 confirmed above the a posteriori MDC in 2007 (K-40, Cs 137, and Th-228) as well as those radionuclides listed in the ODCM (Offsite Dose Calculation Manual) for sediment samples.

53

ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

SAN ONOFRE NUCLEAR GENERATING STATION DOCKET NOS. 50-206, 50-361, 50-362 SAN DIEGO COUNTY, CALIFORNIA Reporting Period: 1/1/2007 to 12/31/2007 Medium or Type and Total Lower All Indicator Location with Highest Annual Mean Control Locations Number of Pathway sampled Number of Limit of Locations Mean Nonroutine (Unit of Analysis Detection Mean Name, Distance Mean (Range) Reported Measurement) Performed (LLD) (Range) and Direction (Range) Measurements Semi-Annual Kelp Analysis - Table 15 (pCi/g)

Macrocystis p. Cs-134 8 0.06 < LLD (0/6) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Macrocystis p. Cs-137 8 0.08 < LLD (0/6) ---- (0/2) < LLD (0/2) 0

(-) (-) (-)

Macrocystis p. I-131 8 0.06 0.0422 (5/6) (A) San Onofre Kelp 0.0545 (2/2) 0.0280 (2/2) 0 (0.0260 - 0.0830) Bed (0.0260 - 0.0830) (0.0210 - 0.0350) 1.5 Mi. S Macrocystis p. K-40 8 1 8.59 (5/6) (E) Salt Creek 10.14 (2/2) 10.14 (2/2) 0 (7.66 - 10.55) (Control) (9.57 - 10.70) (9.57 - 10.70) 11 Mi NNW During 2007, 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 three samples. I-131 is known to be a constituent of sewage plant discharges due to medically administered I-131. Since the concentration of I-131 in the control sample (Salt Creek - about 11 miles up coast from SONGS) has is historically been higher than the I-131 concentration in kelp closer to SONGS, we conclude that the I-131 in kelp is most likely 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 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.

54

APPENDIX C

SUMMARY

OF 2007 QUALITY CONTROL PROGRAMS 55

All REMP samples are collected, shipped, and analyzed in accordance with NRC Regulatory Guide 4.15. Marine radiological environmental samples are collected by a vendor, MBC Environmental, per the vendor=s Quality Assurance manual. REMP sample analysis is performed by the Contracted Environmental Analysis Laboratory (CEAL) in accordance with the Laboratory Quality Assurance Plan. During 2007 the CEAL was Areva NP Environmental Laboratory.

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 Analytics 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 14.93 +/- 0.64 13.39 +/- 0.61 15.66 +/- 0.66 12.56 +/- 1.1 TLD 200 14.61 +/- 0.92 13.67 +/- 0.66 15.21 +/- 0.61 12.75 +/- 0.85

• 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 dose in mR dose in mR per standard quarter per standard quarter (July 2006 to July 2007) (July 2006 to July 2007) 16.55 16.06 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 2007, two (2) gas meters failed to meet this criterion at all calibrated flow rates and one gas meter was inoperable. 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 meters.

Replacement of the gas meters was completed in 2007.

58

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

Ratio Sample Quarter / Sample Analyte / Reported Known E-LAB/

Number Year Media Nuclide Units Value Value Analytics Evaluation E5222-162 4th / 2006 Water H-3 pCi/L 14570 14800 0.99 Agreement E5223-162 4th / 2006 Water Sr-89 pCi/L 68.8 72.6 0.95 Agreement E5223-162 4th / 2006 Water Sr-90 pCi/L 5.56 5.9 0.94 Agreement th E5224-162 4 / 2006 Filter Gross Alpha pCi 63.3 67.2 0.94 Agreement th E5224-162 4 / 2006 Filter Gross Beta pCi 209.6 203 1.03 Agreement th E5225-162 4 / 2006 Filter Ce-141 pCi 179.0 185 0.97 Agreement E5225-162 4th / 2006 Filter Cr-51 pCi 277.9 273 1.02 Agreement th E5225-162 4 / 2006 Filter Cs-134 pCi 89.1 92.7 0.96 Agreement th E5225-162 4 / 2006 Filter Cs-137 pCi 158.8 149 1.06 Agreement th E5225-162 4 / 2006 Filter Co-58 pCi 54.0 52.8 1.02 Agreement E5225-162 4th / 2006 Filter Mn-54 pCi 71.2 69.8 1.02 Agreement th E5225-162 4 / 2006 Filter Fe-59 pCi 51.0 50.2 1.02 Agreement th E5225-162 4 / 2006 Filter Zn-65 pCi 104.3 103 1.01 Agreement th E5225-162 4 / 2006 Filter Co-60 pCi 166.7 177 0.94 Agreement th E5226-162 4 / 2006 Filter Sr-89 pCi 69.5 74.2 0.94 Agreement E5226-162 4th / 2006 Filter Sr-90 pCi 6.46 6.06 1.07 Agreement th E5227-162 4 / 2006 Milk I-131LL pCi/L 71.0 70.8 1.00 Agreement th E5227-162 4 / 2006 Milk I-131 pCi/L 64.8 70.8 0.91 Agreement th E5227-162 4 / 2006 Milk Ce-141 pCi/L 277.7 294 0.94 Agreement E5227-162 4th / 2006 Milk Cr-51 pCi/L 430.7 433 0.99 Agreement th E5227-162 4 / 2006 Milk Cs-134 pCi/L 141.4 147 0.96 Agreement th E5227-162 4 / 2006 Milk Cs-137 pCi/L 233.9 237 0.99 Agreement th E5227-162 4 / 2006 Milk Co-58 pCi/L 83.1 83.8 0.99 Agreement th E5227-162 4 / 2006 Milk Mn-54 pCi/L 110.6 111 1.00 Agreement E5227-162 4th / 2006 Milk Fe-59 pCi/L 82.3 79.7 1.03 Agreement E5227-162 4th / 2006 Milk Zn-65 pCi/L 171.4 164 1.05 Agreement 59

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

Ratio Sample Quarter / Sample Analyte / Reported Known E-LAB/

Number Year Media Nuclide Units Value Value Analytics Evaluation E5227-162 4th / 2006 Milk Co-60 pCi/L 273.1 281 0.97 Agreement E5228-162 4th / 2006 Charcoal I-131 pCi 84.2 87.1 0.97 Agreement E5238-162 1st / 2007 Water Gross Alpha pCi/L 117 112 1.05 Agreement st E5238-162 1 /2007 Water Gross Beta pCi/L 104 100 1.04 Agreement st E5239-162 1 /2007 Water I-131LL pCi/L 88.3 89.8 0.98 Agreement st E5239-162 1 /2007 Water I-131 pCi/L 74.3 89.8 0.83 Agreement E5239-162 1st/2007 Water Ce-141 pCi/L 257 258 1.00 Agreement st E5239-162 1 /2007 Water Cr-51 pCi/L 218 213 1.02 Agreement st E5239-162 1 /2007 Water Cs-134 pCi/L 93.6 97.1 0.96 Agreement st E5239-162 1 /2007 Water Cs-137 pCi/L 197 204 0.97 Agreement E5239-162 1st/2007 Water Co-58 pCi/L 86.2 85.8 1.00 Agreement E5239-162 1st/2007 Water Mn-54 pCi/L 155 158 0.98 Agreement st E5239-162 1 /2007 Water Fe-59 pCi/L 87.1 91.7 0.95 Agreement st E5239-162 1 /2007 Water Zn-65 pCi/L 886 869 1.02 Agreement st E5239-162 1 /2007 Water Co-60 pCi/L 131 132 0.99 Agreement E5240-162 1st/2007 Water Sr-89 pCi/L 127 137 0.92 Agreement st E5240-162 1 /2007 Water Sr-90 pCi/L 9.39 9.99 0.94 Agreement st E5241-162 1 /2007 Charcoal I-131 pCi 67.6 70.2 0.96 Agreement st E5242-162 1 /2007 Filter Gross Alpha pCi 67.2 69.1 0.97 Agreement E5242-162 1st/2007 Filter Gross Beta pCi 69.4 61.9 1.12 Agreement st E5243-162 1 /2007 Milk I-131LL pCi/L 85.1 85.2 1.00 Agreement st E5243-162 1 /2007 Milk I-131 pCi/L 75.4 85.2 0.88 Agreement st E5243-162 1 /2007 Milk Ce-141 pCi/L 294 297 0.99 Agreement st E5243-162 1 /2007 Milk Cr-51 pCi/L 226 245 0.92 Agreement E5243-162 1st/2007 Milk Cs-134 pCi/L 104 112 0.93 Agreement st E5243-162 1 /2007 Milk Cs-137 pCi/L 228 234 0.97 Agreement 60

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

Ratio Sample Quarter / Sample Analyte / Reported Known E-LAB/

Number Year Media Nuclide Units Value Value Analytics Evaluation E5243-162 1st/2007 Milk Co-58 pCi/L 98.1 98.8 0.99 Agreement E5243-162 1st/2007 Milk Mn-54 pCi/L 184 182 1.01 Agreement st E5243-162 1 /2007 Milk Fe-59 pCi/L 109 106 1.03 Agreement st E5243-162 1 /2007 Milk Zn-65 pCi/L 1041 1000 1.04 Agreement st E5243-162 1 /2007 Milk Co-60 pCi/L 148 152 0.98 Agreement st E5244-162 1 /2007 Milk Sr-89 pCi/L 126 137 0.92 Agreement E5244-162 1st/2007 Milk Sr-90 pCi/L 8.85 10 0.88 Agreement E5334-162 2nd/2007 Water H-3 pCi/L 8520 9040 0.94 Agreement nd E5335-162 2 /2007 Filter Gross Alpha pCi 122.7 125 0.98 Agreement nd E5335-162 2 /2007 Filter Gross Beta pCi 127 112 1.13 Agreement E5335-162 2nd/2007 Filter Ce-141 pCi 94.1 107 0.88 Agreement E5335-162 2nd/2007 Filter Cr-51 pCi 230 273 0.84 Non-Agreement(1) nd E5335-162 2 /2007 Filter Cs-134 pCi 114.3 129 0.89 Agreement nd E5335-162 2 /2007 Filter Cs-137 pCi 86.3 90.1 0.96 Agreement nd E5335-162 2 /2007 Filter Co-58 pCi 98.4 106 0.93 Agreement E5335-162 2nd/2007 Filter Mn-54 pCi 83.3 88.5 0.94 Agreement E5335-162 2nd/2007 Filter Fe-59 pCi 79 89.0 0.89 Agreement nd E5335-162 2 /2007 Filter Zn-65 pCi 167 178 0.94 Agreement nd E5335-162 2 /2007 Filter Co-60 pCi 112 127 0.89 Agreement E5337-162 2nd/2007 Filter Sr-89 pCi 71.4 91.2 0.78 Agreement E5337-162 2nd/2007 Filter Sr-90 pCi 10.1 12.4 0.82 Agreement nd E5338-162 2 /2007 Milk I-131LL pCi/L 73.5 70.1 1.05 Agreement nd E5338-162 2 /2007 Milk I-131 pCi/L 75 70.1 1.07 Agreement nd E5338-162 2 /2007 Milk Ce-141 pCi/L 168 200 0.84 Non-Agreement(2)

E5338-162 2nd/2007 Milk Cr-51 pCi/L 447 512 0.87 Agreement 61

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

Ratio Sample Quarter / Sample Analyte / Reported Known E-LAB/

Number Year Media Nuclide Units Value Value Analytics Evaluation E5338-162 2nd/2007 Milk Cs-134 pCi/L 223 242 0.92 Agreement E5338-162 2nd/2007 Milk Cs-137 pCi/L 165 169 0.98 Agreement nd E5338-162 2 /2007 Milk Co-58 pCi/L 203 198 1.02 Agreement nd E5338-162 2 /2007 Milk Mn-54 pCi/L 178 166 1.07 Agreement nd E5338-162 2 /2007 Milk Fe-59 pCi/L 170 167 1.02 Agreement nd E5338-162 2 /2007 Milk Zn-65 pCi/L 343 334 1.03 Agreement E5338-162 2nd/2007 Milk Co-60 pCi/L 238 238 1.00 Agreement E5430-162 3rd/2007 Water Gross Alpha pCi/L 112 109 1.03 Agreement rd E5430-162 3 /2007 Water Gross Beta pCi/L 218 214 1.02 Agreement rd E5431-162 3 /2007 Water I-131LL pCi/L 83.4 80.1 1.04 Agreement E5431-162 3rd/2007 Water I-131 pCi/L 80.2 80.1 1.00 Agreement E5431-162 3rd/2007 Water Ce-141 pCi/L 176 182 0.97 Agreement rd E5431-162 3 /2007 Water Cr-51 pCi/L 228 249 0.92 Agreement rd E5431-162 3 /2007 Water Cs-134 pCi/L 111 127 0.87 Agreement rd E5431-162 3 /2007 Water Cs-137 pCi/L 112 112 1.00 Agreement E5431-162 3rd/2007 Water Co-58 pCi/L 94.3 98.1 0.96 Agreement E5431-162 3rd/2007 Water Mn-54 pCi/L 141 144 0.98 Agreement rd E5431-162 3 /2007 Water Fe-59 pCi/L 94.8 95.1 1.00 Agreement rd E5431-162 3 /2007 Water Zn-65 pCi/L 186 174 1.07 Agreement E5431-162 3rd/2007 Water Co-60 pCi/L 120 127 0.94 Agreement E5432-162 3rd/2007 Charcoal I-131 pCi 66.5 69.6 0.96 Agreement rd E5433-162 3 /2007 Filter Gross Alpha pCi 86.4 105 0.82 Non-Agreement(3) rd E5433-162 3 /2007 Filter Gross Beta pCi 190 196 0.97 Agreement rd E5434-162 3 /2007 Milk I-131LL pCi/L 87.2 85.2 1.02 Agreement E5434-162 3rd/2007 Milk I-131 pCi/L 82.9 85.2 0.97 Agreement E5434-162 3rd/2007 Milk Ce-141 pCi/L 196 211 0.93 Agreement 62

TABLE C-1 ANALYTICS CROSS-CHECK PROGRAM

SUMMARY

Ratio Sample Quarter / Sample Analyte / Reported Known E-LAB/

Number Year Media Nuclide Units Value Value Analytics Evaluation E5434-162 3rd/2007 Milk Cr-51 pCi/L 282 289 0.97 Agreement E5434-162 3rd/2007 Milk Cs-134 pCi/L 141 147 0.96 Agreement rd E5434-162 3 /2007 Milk Cs-137 pCi/L 126 131 0.96 Agreement rd E5434-162 3 /2007 Milk Co-58 pCi/L 111 114 0.97 Agreement rd E5434-162 3 /2007 Milk Mn-54 pCi/L 171 168 1.02 Agreement rd E5434-162 3 /2007 Milk Fe-59 pCi/L 112 111 1.01 Agreement E5434-162 3rd/2007 Milk Zn-65 pCi/L 212 202 1.05 Agreement E5434-162 3rd/2007 Milk Co-60 pCi/L 154 148 0.98 Agreement rd E5435-162 3 /2007 Milk Sr-89 pCi/L 89.2 94.9 0.94 Agreement rd E5435-162 3 /2007 Milk Sr-90 pCi/L 12.9 13.1 0.98 Agreement (1) (2) (3) The non agreement conditions were identified in the CEALs Corrective Action Program. As of April 2008 a resolution was not available. On January 3, 2008 the REMP lab was changed from Areva to GEL.

63

APPENDIX D COMPARISON OF OPERATIONAL TO PREOPERATIONAL DATA AND ANALYSIS OF TRENDS 64

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 2007 operational data obtained for SONGS Units 2/3, which is the subject post-operational period for SONGS Unit 1.

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 2007 operational data are possible for each of the exposure pathways to man, namely: (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.

Overall, the preoperational data are much 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 adverse trends.

A. Direct Radiation SONGS Unit 1:

No direct radiation data were obtained in the preoperational period of 1964 to 1967 to compare with the operational data.

SONGS Units 2/3:

Direct radiation measurements for the SONGS REMP were made quarterly at 38 indicator locations and 11 control locations in 2007. (See Appendix I for ISFSI TLD data). Direct radiation samples (TLDs) were collected at a number of inner and outer ring locations as 65

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 millirem. The preoperational indicator average was 25.3. The preoperational control range was 19.3 to 30.1 and the control mean was 23.1.

During the 2007 operational year for Units 2/3, the routine indicator TLD locations ranged from 10.37 to 32.85 millirem, averaging 16.90 millirem while the control locations ranged from 12.62 to 21.17 millirem with an average of 15.80 millirem.

Factors such as meteorology, geographic location, 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 2007 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 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 compares the environmental radiation levels of selected indicator and control locations. Simultaneous variation in the radiation levels at both the control and indicator locations show that the variations are due to factors external to SONGS. The operation of SONGS had no impact on the environment as measured by this sample medium.

B. Air Particulates SONGS Unit l:

Before SONGS Unit 1 attained initial criticality, samples of air particulate gross beta activity were collected from indicator and control locations. During the preoperational period of 1964-1967, detectable gross beta activity at the indicator locations ranged from 0.030 to 3.810 pCi/m3, averaging 0.253 pCi/m3. The control location of Huntington Beach (HBGS) had an average gross beta activity of 0.306 ranging from 0.04 to 2.77 pCi/m3. During 2007, the gross beta activity at the indicator locations ranged from 0.0084 to 0.0631 pCi/m3, and averaging 0.0264 pCi/m3. The Oceanside control location gross beta activity ranged from 0.0109 to 0.0592 pCi/m3 with an average of 0.0263 pCi/m3. The decrease in activity levels between 1965 and 2007 is ascribed to the curtailment of atmospheric nuclear weapons testing and the resultant decrease in fallout. Refer to figures 3A, 3B and 3C. There was a close correlation between indicator and control locations in 2007. The operation of SONGS had no impact on the environment as measured by this sample medium.

Valid comparisons of preoperational data to the 2007 postoperational data are difficult to make because the preoperational background levels are elevated by a factor of about ten due to the atmospheric nuclear weapons testing fallout.

SONGS Units 2/3:

66

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.

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 31 years (January 1976 to December 2007). 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 other environmental phenomena and seasonal variations.

C. Radioiodine SONGS Unit 1:

No preoperational data are available. All 2007 data were below both the a priori LLD (0.07 pCi/m3) and the lower, count specific, a posteriori MDC.

SONGS Units 2/3:

Most of the preoperational and all of the 2007 operational data for I-131 level were below the detection limit.

D. Ocean Water SONGS Unit 1:

No samples were obtained for the preoperational period of SONGS Unit 1.

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, 67

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. Reduction in effluent activity through programmatic changes at Unit 1 may have reduced activity levels in ocean water.

For tritium and all SONGS related radionuclides, the data collected at all locations during the 2007 operational period were below both the a priori LLD and the lower a posteriori MDC. We conclude that the operation of SONGS had no impact on the environment as measured by this sample medium.

E. Shoreline Sediments (Sand)

SONGS Unit l:

Shoreline sediment samples were not collected during the preoperational period for SONGS 1.

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 26 naturally-occurring and plant-related radionuclides.

To assess the impact of SONGS operations on this environmental medium, preoperational data were compared to 2007 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 2007 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 Unit 1:

Ocean bottom sediment samples were not collected during the preoperational phase of Unit 1, and, therefore, no comparison can be made. However, operational data for SONGS 1 did not reveal the presence of any significant radioactivity in the sediment samples.

SONGS Units 2/3:

68

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 2007 was below the a posteriori MDC. We conclude that operation of SONGS Units 2/3 has had a negligible impact upon this environmental medium.

69

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 2007

• • During January to December 2007 all station related Radionuclides from all sample locations were < LLD LLD Lower limits of detection for operational data are listed in Appendix B.

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G. Marine Species (Flesh)

SONGS Unit l:

Marine species were not collected during the preoperational period for SONGS Unit l. No comparison with operational data is possible.

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 2007 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 2007 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 2007 had no impact on the environment as measured by this sample medium.

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TABLE D-2 MARINE SPECIES CONCENTRATIONS (pCi/g, wet weight) PREOPERATIONAL AND 2007 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 2007. The nonmigratory marine species samples collected in 2007 were Blacksmith, California Mussel, Black Perch, Kelp Bass, Sheep head, and Spiny Lobster

• • During January to December 2007 all station related Radionuclides from all sample locations were < LLD LLD Lower limits of detection for operational data are listed in Appendix B.

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TABLE D-2 MARINE SPECIES CONCENTRATIONS (pCi/g, wet weight) PREOPERATIONAL AND 2007 OPERATIONAL DATA (SONGS UNITS 2/3)*

Bay Mussel Flesh**

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 --- --- --- ---

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 measured PreOp < LLD < LLD < LLD < LLD SONGS related radionuclides Operational < LLD < LLD < LLD < LLD

• PreOp = January 1979 to July 1982; Operational = January to December 2007. The nonmigratory marine species samples collected in 2007 were Blacksmith, California Mussel, Black Perch, Kelp Bass, Sheep head, and Spiny Lobster

• • During January to December 2007 all station related Radionuclides from all sample locations were < LLD LLD Lower limits of detection for operational data are listed in Appendix B.

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TABLE D-2 MARINE SPECIES CONCENTRATIONS (pCi/g, wet weight) PREOPERATIONAL AND 2007 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 2007

• • Sea Hare and Keyhole Limpet samples were not collected in 2007 LLD Lower limits of detection for operational data are listed in Appendix B.

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H. Local Crops SONGS Unit 1:

During the preoperational phase of Unit 1, local crops were collected semiannually from both indicator and control locations, and subsequently analyzed for Sr-90. The range was 0.008 to 0.030 pCi/g wet weight. The average Sr-90 value was 0.022 pCi/g wet weight. Sr-90 is a common fission product likely due to atmospheric weapons tests.

During 2007, only naturally occurring radionuclides were detected in the crop samples.

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 2007 operational period, only naturally occurring radionuclides were detected in the crop samples. The data indicate that the concentration of SONGS related radionuclides have decreased over time in this sample medium. This decrease is attributable to the termination of atmospheric nuclear weapons testing. The operation of SONGS had no impact on the environment as measured by this sample medium.

I. Soil SONGS Unit 1:

No soil data were available for Unit 1 preoperational phase so a comparison cannot be made.

However, gamma isotopic analysis of soil does not show any significant level of radioactivity.

No accumulation pattern of plant-related radionuclides in the soil has been observed in the last 20 years.

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 Unit 1:

Samples of kelp were not collected and analyzed during the preoperational period for SONGS Unit l. No comparison with operational data is possible.

SONGS Units 2/3:

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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.

To assess the impact of SONGS operations on kelp, preoperational data were compared to 2007 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 2007 operational period, I-131 was detected in two (2) indicator samples and one control sample. No other station related isotopes were detected in kelp samples during the 2007 operational period. Figure 4 (I-131 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 most likely 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 location. These data support the conclusion that during the Units 2/3 operational period, the detection of I-131 in kelp is primarily due to factors external to SONGS.

K. Drinking Water No plant related radionuclides were detected during the 2007 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.

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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-0.329 0.23 0.245 0.245 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 <LLD-0.083 0.037 <LLD-0.035 <LLD 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 2007 LLD Lower Limit of Detection for operational data are listed in Appendix B.

During 2007, kelp was not available for Autumn sampling due to the El Nino weather system. Only one control kelp sample was collected in 2007.

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APPENDIX E DEVIATIONS FROM ODCM SAMPLING REQUIREMENTS IN 2007 78

DEVIATIONS FROM THE ODCM SAMPLING REQUIREMENTS Deviations from the Offsite Dose Calculation Manual (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 most sample types. During 2007, the ODCM specified a priori LLD was achieved for most REMP samples. Exceptions are described below for each sample type. Deviations from the ODCM were associated with external factors not within the control of REMP personnel such as wildfires and limited availability of marine samples at the locations specified in the ODCM. The 2007 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 2007 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 <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> are described below for each air sample. Smoke from the October 2007 wildfires damaged Air Sampler # 13 and dust loaded all REMP air samplers. These effects are described for each sampler.

Air Sampler 1 (City of San Clemente): Sampler # 1 had no down time during 2007. Sampler

1. 1 was dust loaded during the sample collection periods ending 23 October 2007 and 30 October 2007. Sample volumes and flow rates were reduced but there were no flow interruptions during the wildfires. The ODCM maximum values for the LLD were not exceeded for the particulate gross beta, I-131, and quarterly composite gamma analyses during 2007.

Air Sampler 7 (AWS Roof): Sampler # 7 had 82.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> of down time during 2007 due to external power interruptions. During the sample collection period ending 23 October 2007 sampler # 7 was dust loaded. A special air particulate collection was completed on 25 October 2007. During the sample collection period ending 30 October 2007 sampler # 7 flow was completely blocked by accumulated smoke and particulate material. The ODCM maximum value for the LLD was exceeded for the particulate gross beta during the collection period ending 30 October 2007. The ODCM maximum values for the LLD were not exceeded for I-131 and quarterly composite gamma analyses during 2007.

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Air Sampler 9 (State Beach Park): Sampler # 9 had no down time during 2007. Sampler # 9 was dust loaded during the sample collection periods ending 23 October 2007 and 30 October 2007. Sample volumes and flow rates were reduced but there were no flow interruptions during the wildfires. The ODCM maximum values for the LLD were not exceeded for the particulate gross beta, I-131, and quarterly composite gamma analyses during 2007.

Air Sampler 10 (Bluff): Sampler # 10 had 18.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> of down time during 2007 due to external power interruptions. Sampler # 10 was dust loaded during the sample collection periods ending 23 October 2007 and 30 October 2007. A special air particulate collection was completed on 25 October 2007. The ODCM maximum values for the LLD were not exceeded for the particulate gross beta, I-131, and quarterly composite gamma analyses during 2007.

Air Sampler 11 (EOF): Sampler # 11 had 3.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> of down time during 2007 due to external power interruptions. Sampler # 11 was dust loaded during the sample collection periods ending 23 October 2007 and 30 October 2007. A special air particulate collection was completed on 25 October 2007. The ODCM maximum value for the LLD was exceeded for the particulate gross beta during the collection period ending 30 October 2007. The ODCM maximum values for the LLD were not exceeded for I-131 and quarterly composite gamma analyses during 2007.

Air Sampler 12 (Former SONGS Evaporation Pond): Sampler # 12 had 3.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> of down time during 2007 due to external power interruptions. Sampler # 12 was dust loaded during the sample collection periods ending 23 October 2007 and 30 October 2007. A special air particulate collection was completed on 25 October 2007. The ODCM maximum value for the LLD was exceeded for the particulate gross beta during the collection period ending 30 October 2007. The ODCM maximum values for the LLD were not exceeded for I-131 and quarterly composite gamma analyses during 2007.

Air Sampler 13 (Camp Pendleton East): Sampler # 13 had 6.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> of down time during 2007 due to external power interruptions. Sampler # 13 (0.7 miles E) was inoperable for 1510.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> in 2007 due to the wildfires. The wildfire outage started at 1030 on 24 October 2007. As a compensatory measure air sampler # 30 ( ~ 0.2 miles E) was placed in service at 1053 on 25 October 2007. Air sampler # 30 was out of service for 141 hours0.00163 days <br />0.0392 hours <br />2.331349e-4 weeks <br />5.36505e-5 months <br /> during November 2007 due to an external power interruption. The total time that both air samplers were out of service was 165.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> during 2007. Air sampler # 13 was returned to service at 0900 on 26 December 2007. Sampler # 13 was dust loaded during the sample collection periods ending 23 October 2007 and 30 October 2007. The sampler # 13 ODCM maximum value for the LLD was exceeded for the particulate gross beta during the collection period ending 30 October 2007 due to inadequate sample volume (The wildfires rendered # 13 inoperable on 24 October 2007).

Sampler # 30 ODCM maximum value for the LLD was exceeded for articulate gross beta during the collection period ending 7 November 2007 due low volume attributed to the external power interruption. The ODCM maximum values for the LLD were not exceeded for I-131 and quarterly composite gamma analyses during 2007 for all samples collected at # 13 and at # 30.

Air Sampler 14 (Mesa Medical Facility): Sampler # 14 was dust loaded during the sample collection periods ending 23 October 2007 and 30 October 2007. A special air particulate 80

collection was completed on 25 October 2007. The ODCM maximum value for the LLD was exceeded for the particulate gross beta during the collection period ending 30 October 2007. The ODCM maximum values for the LLD were not exceeded for I-131 and quarterly composite gamma analyses during 2007.

Air Sampler 15 (Oceanside Control): No deviations were observed.

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 2007 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 2007.

B. DIRECT RADIATION TLD # 54 (Escondido) was lost due to construction activity at the Escondido Fire Station in the 2nd quarter of 2007.

TLD # 4 was destroyed by the October 2007 wildfires. During the 4th quarter 2007 TLDs were installed at selected locations on Camp Pendleton where the potential for thermal fade was suspected. At all locations where both original and duplicate TLD data was available the reported exposure values in mR overlapped by less than 2 sigma. During the 4th quarter 2007 only the compensatory duplicate data was available for TLD # 35.

AR (Action Request) 080400287 was generated to resolve the TLD # 35, 4th quarter 2007 TLD data issue. All of the available TLD data from locations affected by the wildfires during the 4th quarter 2007 was consistent with the historical data.

A verification of all terrestrial REMP sample location data was conducted in conjunction with the preparation for the 2007 AREOR. The latitude and longitude of all TLD sample locations in the REMP database is maintained by SCE Corporate Real Properties. The REMP database location data was compared with the USGS (US Geological Survey) satellite photo database. New GPS (Global Positioning System) survey data was obtained for those locations with an observed variance from the USGS data. Several TLD stations were not at the ODCM locations. These deviations will be captured in the next revision of the ODCM.

TLD # ODCM location Measured TLD location Distance (miles)/Direction Distance (miles)/Direction TLD 19 5.0 NNW 4.9 NNW TLD 38 3.3 SE 3.4 SE TLD 46 0.9 SE 1.0 SE TLD 49 12.8 ESE 12.9 ESE TLD 53 44.3 SE 44.2 SE TLD 55 0.2 W 0.2 WNW 81

TLD 2 3.5 N 3.6 N TLD 3 2.6 NE 2.8 NE TLD 4 4.5 E 4.4 E TLD 33 5.7 N 5.9 N TLD 35 4.7 NNE 4.8 NNE TLD 57 0.1 WSW 0.1 SW TLD 62 0.6 NNE 0.7 NNE TLD 36 4.2 NE 4.1 NE TLD 68 4.3 ENE 4.4 ENE TLD 77 4.3 N 4.2 N C. LOCAL CROPS No deviations were observed. The active REMP sample locations were verified with GPS and USGS survey data.

D. SHORELINE SEDIMENTS No deviations were observed. The REMP Shoreline sediment sample locations were verified with GPS and USGS survey data.

E. DRINKING WATER In conjunction with the preparation of the 2007 AREOR, a verification of the REMP drinking water sample locations was performed using a GPS (Global Positioning System) receiver. The GPS data was then overlaid onto the USGS (US Geological Survey) satellite photo database. The location for drinking water sample #4, Camp Pendleton, was thus determined to be 2.1 miles from the SONGS Units 2/3 midpoint in sector Q.

The ODCM location for drinking water sample # 4 is 2.2 miles in Sector R. Drinking water at location # 4 (Camp Pendleton Lincoln Properties Housing Office) is fed from the Area 52 reservoir, which collects drinking water from several Camp Pendleton wells.

The ODCM location will be updated to reflect the revised location during the next ODCM revision.

F. SOIL The ODCM listed location for the control soil sample is 16.0 miles SE. Due to recent development, an undisturbed sample was not available at that location. A control sample location in an undisturbed area was located approximately 15 miles SE from SONGS at the Prince of Peace Abbey in Oceanside.

In conjunction with the preparation of the 2007 AREOR a verification of the REMP soil sample locations performed using a GPS (Global Positioning System) receiver. The GPS data was then overlaid onto the USGS (US Geological Survey) satellite photo database.

The location for soil sample # 1, Camp San Onofre, is adjacent to TLD # 3, Camp San Onofre. The GPS surveyed location for soil sample # 1 is 2.8 miles NE from SONGS 82

Units 2/3 midpoint. The ODCM location for soil sample # 1 is 2.6 miles NE from SONGS. The ODCM location will be updated during the next ODCM revision.

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 The April 2007 LLD for I-131 was not achieved due to a lab counting delay. No satisfactory explanation was provided. The corrective action taken by SCE was that effective 3rd January 2008 the REMP lab was changed from AREVA to GEL.

C. OCEAN BOTTOM SEDIMENTS No deviations were observed. The October 2007 control sediment sample was collected 18.1 miles NW from SONGS Units 2/3. The ODCM location is 18.2 miles. Sediment samples are collected at the location closest to the ODCM location where sediment is available.

D. KELP Kelp is intermittently available at the various local kelp forests. Sea urchin population, El Nino and La Nina weather phenomena and other macro-environmental factors determine kelp sample availability. Samples were obtained from the kelp canopy closest to the ODCM specified location.

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APPENDIX F LAND USE CENSUS 84

INTRODUCTION Southern California Edison conducted the annual 2007 Land Use Census (LUC) in accordance with section 5.2 of the Offsite Dose Calculation Manual (ODCM). The purpose of the LUC is to identify important radiological exposure pathways to humans. The LUC identifies the nearest residences, milk animals, meat animals, gardens of at least 500 square feet that produce fleshy or leafy vegetables, and other specified uses (campgrounds, employment, etc.) in each of the meteorological landward sectors within five miles of SONGS. Results are summarized in Table F-1 and F-2 at the end of this appendix.

THE STUDY AREA The study area includes half of the city of San Clemente (population estimated at 67,373 as of January 1, 2007), the San Clemente State Park, U.S. Marine Corps Base Camp Pendleton (MCB), San Onofre State Beach and Park, the San Clemente Ranch (now known as Seaview Farm), the former U. S. Coast Guard Station at San Mateo Point, and SONGS.

METHODOLOGY A review of the 2006 LUC and documentation notebook was conducted. Verification and revision of the 2006 data was accomplished by inquiry to the cognizant agency, organization, or individual possessing direct knowledge of the item being verified.

The garden census was performed by examining aerial photographs taken. The photographic image areas which appeared to correspond to likely garden locations were converted to street addresses. The corresponding residences were observed from the nearest public road to determine if a garden was present. If the entire property was not visible from the street then a garden was assumed to be present.

The closest residence was established in each sector by correspondence with cognizant authorities (City of San Clemente Planning Department and USMC Camp Pendleton). The meat and milk animal survey was performed by contacting the natural resources office on Camp Pendleton, the Orange County Agricultural Commissioner, and the County of San Diego Department of Agriculture. Information on other uses was obtained by contacting the appropriate organizations.

DEFINITIONS Residence is defined as any structure (single-family house, apartment, mobile home, barracks or similar unit) occupied by individual(s) for three months (2,000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />) or longer per 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.

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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, 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 include, but are not limited to cows, goats and sheep, whose milk is used in dairy products for human consumption.

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

Leafy vegetables include, but are not limited to lettuce, cabbage, collard greens, Bok choi, sorrel, and spinach.

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

SUMMARY

OF CHANGES

1. LUC #'s R-A2 & R-R2 - Camp Mesa - Camp Mesa was not occupied for a portion of 2007. The estimated maximum occupancy was 6624 hours0.0767 days <br />1.84 hours <br />0.011 weeks <br />0.00252 months <br /> during 2007.

2. LUC # R-R3 - Camp Mesa Dry Camping was not occupied for the period 1-1-2007 to 10-1-2007 (the LUC data collection and study period per SO123-IX-1.20). Outage workers occupied Camp Mesa during 2007 for the period 11-2-2007 to 12-31-2007.

Table 1 reflects data as of the end of the study period as per SO123-IX-1.20.

3. LUC # O-2A San Onofre Surf Camp and campground host - the occupancy for this location increased due to the addition of a campground host in space 100 of the San Onofre State Beach Campground.

4. LUC # O-2B YMCA Surf Camp at camping space # 18 in the San Onofre State Beach Campground. This is a new location.

5. LUC # O-2C SurfCamp.com surf camp occupied camping spaces 35 to 37 in the San Onofre State Beach Campground. This is a new location.

6. LUC # 19 - San Mateo Waste Water Treatment Plant - The occupancy has changed per Camp Pendleton.

7. LUC # O-5 Camp Horno Motor Pool and LUC # O-8 Camp San Mateo Motor Pool - The occupancy for these locations changed per Camp Pendleton.

8. LUC # O-9 Sanitary Land Fill - the occupancy was increased per Camp Pendleton.

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9. LUC # O San Onofre Waste Water Treatment Plant - The occupancy has changed per Camp Pendleton.

10. LUC # 8 USMC Exchange & Commissary - The occupancy has changed per Camp Pendleton.

11. LUC # 23 Christianitos USMC Gas Station - The occupancy has changed per Camp Pendleton.

12. During the 2006 LUC investigation the base game warden and the base terrestrial biologist were interviewed. It is not possible to fix a specific location for the grazing of free ranging wild animals such as deer. The possible grazing range includes areas where coastal sage brush exists. The closest areas in each sector where this vegetation grows is the closest that the deer could graze. These distances are: 0.1 miles Sectors R, A, B, C, D, E and G; 0.2 miles in Sector Q; and 0.3 miles Sectors F and P. Exactly where deer are taken will not definitively determine where the subject deer grazed. Accordingly, specific locations regarding the location of deer are not provided and are not available.

The meat animal map (Figure 3) was deleted in 2006. Plans are being developed to add meat animals (deer) to the SONGS REMP sampling plan. A scientific take permit has been approved by the California Fish and Game in December 2007. The deer meat pathway will be monitored by sampling in 2008. The Camp Pendleton hunting take for the period July 1, 2006 to June 30, 2007 is listed in Table 2. 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 these estimates for 2007.

Distances to nearest vegetation typically consumed by deer.

Sector 2/3 Distance Units 2/3 Sector 1 Distance Unit 1 P 0.3 P 0.1 Q 0.3 Q 0.2 R 0.2 R 0.1 A 0.1 A 0.1 B 0.1 B 0.1 C 0.1 C 0.1 D 0.1 D 0.1 E 0.2 E 0.2 F 0.3 F 0.4 G 0.1 G 0.4 87

13 Residences map and Table 1 updates - LUC #s R-Q4, R-Q5, R-P4 and R-P3 are individual SPORB employee or campground host trailers. LUC # 33 is a duplicate of LUC # R-P4. The LUC data has been amended to include only the closest residence in the SORB facility. Therefore LUC #s 33, R-P4, and R-Q4 were deleted from Table 1 and from the LUC maps.

14. LUC # 27 (Ammunition Storage Facility) - This facility has not been occupied for several years per Camp Pendleton. It was marked NA during the 2006 LUC. LUC # 27 has been removed from the Table 1 and the map.

15. LUC # 1B (mini exchange trailer) no longer exists. It was marked NA in the 2006 LUC.

LUC # 1B has been removed from 2007 LUC.

16. LUC # 2 (SORB guard shack) is no longer used and was marked NA during the 2006 LUC. LUC # 2 has been removed from the 2007 LUC.

17. LUC # 31A and LUC # 31B occupancy was reduced to 1960 hours0.0227 days <br />0.544 hours <br />0.00324 weeks <br />7.4578e-4 months <br /> per year.

88

TABLE F-1 2007 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet Estimated Hours of Maximum Occupancy Units Miles Miles 2/3 From Unit 1 From Sector LUC # Residence Unit 1 Sector U2/3 A R-A1 Camp San Mateo 3.5 A 3.6 FTR R-A2 SONGS Camp Mesa 0.3 B 0.4 6624 B

C R-C2 Camp San Onofre Fire Station 2.4 C 2.4 3,744 R-C1 Camp San Onofre Barracks 524101 2.9 C 2.8 FTR D R-D1 Camp San Onofre Barracks 3.0 D 3.0 FTR E R-E1 Camp Horno Barracks 4.2 E 4.1 FTR F

G H

J K

L M

N P R-P3 San Onofre Rec Beach (SORB) 0.8 Q 1.0 FTR R-P2 San Mateo Point Housing 2.5 P 2.7 FTR R-P1 Cotton Point Estates 2.5 P 2.7 FTR Q R-Q5 SORB Resident Employee 0.9 Q 1.1 FTR R-Q2 San Onofre Mobile Homes 1.2 Q 1.4 FTR R-Q3 San Mateo Point Housing 2.5 Q 2.7 FTR 11 State park Main Offices 3.3 Q 3.5 FTR R R-R2 SONGS Camp Mesa 0.3 A 0.4 6624 R-R3 SONGS Dry Camping PL12 0.6 Q/R 0.7 2920 R-R1 San Onofre Mobile Homes 1.2 R 1.3 FTR 20 Sea Ridge Estates 4.4 R 4.5 FTR FTR - Full Time Residence Bolt Text indicates changes from 2006 LUC 89

TABLE F-2 2007 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet Units Miles Miles 2/3 From Unit 1 From Sector LUC # Gardens Unit 1 Sector U2/3 A

B C

D E

F G

H J

K L

M N

P G-3 Cotton Point Estate 2.6 P 2.8 Q G-8 2240 Ave. Salvador 3.9 Q 4.1 G-5 1706 S Ola Vista 4.2 Q 4.4 G-6 1315 S Ola Vista 4.4 Q 4.6 14 Inactive - 4.1 Q 4.3 3 W Ave San Antonio 16 Inactive - 3.9 Q 4.1 147 W Junipero R G-10 SONGS Garden 0.3 B 0.4 FTR - Full Time Residence Bolt Text indicates changes from 2006 LUC 90

TABLE F-3 2007 SONGS Units 2/3 LUC Five-Mile Radius Summary Sheet Estimated Hours of Maximum Units Miles Miles 2/3 From Unit 1 From Occupancy Sector LUC # Other Specified Uses Unit 1 Sector U2/3 A O-8 Camp San Mateo Motor Pool 3.5 A 3.6 1,950 24 Cristianitos Fire Station 4.8 A 5.0 3,744 22 SCE Land Uses 0.3 B 0.4 ---

B O-9 USMC CP Sanitary Land Fill 2.1 B 2.1 600 C O-10 Camp San Onofre (STP #11) 2.3 C 2.2 2,000 D

E O-5 Camp Horno Motor Pool 4.2 E 4.0 1,920 29 Camp Horno Truck Company 4.7 NA F O-1 San Onofre State Beach Guard Shack 1.0 F 0.8 1,500 31A Border Patrol Checkpoint (NB) 2.2 F 1.9 2,256 31B Hwy Patrol Weigh Sta (NB) 2.3 F 2.1 1,960 G O-2 San Onofre Beach Campground 2.0 G 1.8 720 32 Hwy Patrol Weigh Sta (SB) 2.3 G 2.1 1,960 O-2A Surf Camp (2448 hours0.0283 days <br />0.68 hours <br />0.00405 weeks <br />9.31464e-4 months <br />) / Campground Host 3.0 G 2.8 4,380 O-2B YMCA Surf Camp 2.1 F 1.9 288 O-2C SurfCamp.com State Beach Surf Camp 2.5 G 2.3 2,280 H

J K

L M

N P O-6 Surf Beach (Lifeguard) 0.3 P 0.5 800 3 Trestles Beach Lookout Tower 1.6 P 1.8 500 Q O-3 State Park Office Trailer 0.4 Q 0.6 2,000 5 Surf Beach Guard Shack 0.5 Q 0.7 1,500 7 SORB Clubhouse 1.0 Q 1.2 30 18 SORB Lifeguard Tower 1.0 Q 1.2 2,000 8 USMC Exchange & Commissary 1.5 Q 1.7 1,950 9 Basilone Road USMC Entry Gate 1.8 Q 2.0 1,248 12 San Mateo Campground 2.7 Q 2.9 4,380 13 Beach Concession 3.7 Q 3.9 2,000 17 Beach Concession 4.7 Q 4.5 500 1A SORB Campground Checkin 1.1 Q 1.3 2000 R 19 Camp San Mateo (STP #12) 3.5 A 3.7 2,000 21 Cristainitos USMC Entry Gate 4.0 A 4.1 1,248 23 Cristianitos USMC Gas Station 4.0 A 4.1 1,984 FTR - Full Time Residence Bolt Text indicates changes from 2006 LUC 91

APPENDIX G FIGURES FOR 2007 92

Figure 1. Potential Radiation Exposure Pathways Leading to Man 93

94 95 96 97 98 99 100 APPENDIX H ERRATA TO THE 2006 AREOR All data required by the ODCM in 2006 was reported in the 2006 AREOR. There are no errata to be appended to the 2006 AREOR.

101

APPENDIX I REMP TLDs CO-LOCATED WITH DHS TLDs DURING 2007 102

APPENDIX I REMP TLDs CO-LOCATED WITH DHS TLDs DURING 2007 Requirements in the standard Technical Specifications adopted under the Technical Specifications Improvement Program include reporting results of those thermoluminescent dosimeters (TLDs) that are co-located with NRC dosimeters. The NRC no longer deploys TLDs in the environs of SONGS. Some SCE TLDs are located adjacent to the former NRC TLD locations and these SCE TLDs are listed below.

The DHS (Department of Health Services) also maintains a TLD program in the environs of SONGS. The DHS direct radiation monitoring program uses Landauer TLDs.

The below listed quarterly TLD data is from the SCE & DHS TLD programs. The NRC location numbers refer to the locations in the old NRC program.

2007 Data from SCE TLDs 1st 2nd 3rd 4th Location Number Location Name Qtr Qtr Qtr Qtr SCE 1 , NRC 7, DHS #2 San Clemente 19.38 16.67 18.26 17.15 SCE 2, NRC 23, DHS #8 Camp San Mateo 19.49 18.18 20.66 18.04 SCE 3, NRC 19, DHS #9 Camp San Onofre 17.16 15.55 18.29 15.81 SCE 6, DHS #10 Old Route 101 11.83 11.25 13.11 11.12 (East-Southeast)

SCE 10, NRC 12, DHS #6 San Onofre Surfing Beach 17.14 16.16 17.63 14.66 SCE 16, DHS #7* ESE Site boundary 22.69 18.43 19.25 17.58 SCE 22, NRC 11, DHS #4 Coast Guard Station 19.23 16.56 19.1 16.46 SCE 34, NRC 14, DHS #5 San Onofre Elementary 17.68 14.87 17.16 14.31 School SCE 41, NRC 25, Old Route 101 (Unit 3) 16.12 14.82 17.12 14.98 DHS #11**

SCE 50, NRC 32, DHS #13 Oceanside Fire Station 17.08 15.85 16.39 16.83

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

• • SCE 41 is approximately 120 meters from DHS 11. Results included per DHS request.

103

Appendix J ISFSI (Independent Spent Fuel Storage Installation) TLD Data 104

ISFSI (Independent Spent Fuel Storage Installation) TLD Data Per 10 CFR 72.126, SONGS implemented an environmental 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 spent fuel storage in the ISFSI for the purposes of estimating the additional dose potentially attributable to the operation of the ISFSI.

Environmental dose rates are variable. The REMP TLD data show a seasonal variability that does not appear to be related to any activities at SONGS. Data from the REMP indicator and control TLDs increase and decrease in a synchronous manner. The data support the conclusion that macro-environmental factors are the causative agents for the 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 7a. In addition to environmental factors some non-ISFSI work activities at Unit 1 have elevated the pre-operational measured ISFSI TLD dose. 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 dose rates of TLDs 306 to 315. In addition, the removal of the Unit 1 reactor vessel in October 2002 caused a noticeable increase in the measured dose for TLDs 301 to 315. Refer to Tables J-1 and J-2 which list all the REMP and ISFSI TLD data within the 10 CFR 72 Controlled Area Boundary and the 10 CFR 50 EAB (Exclusion Area Boundary).

The TLDs close to the ISFSI foundation (TLDs 306 to 315) all showed a decrease in measured dose after the commencement of spent fuel storage in the ISFSI. Refer to Table J-1. This decrease in measured dose may be attributable to the aforementioned seasonal variability of environmental dose rates or it may be attributable to the decrease in non-ISFSI radioactive material work activity in the Unit 1 area.

In the first quarter 2004, 3 TLDs were placed on the perimeter fence 15 meters SW of the ISFSI module. These TLDs (336, 337, and 338) showed the highest measured dose in 2007. The closest publicly accessible location SW of the ISFSI is the San Onofre Beach access road. The TLDs located along the access road measured a dose indistinguishable from background in 2007.

The measured ISFSI TLD dose rate was compared to the calculated ISFSI dose rates (calculation SCE-23.0508). The measured dose rates correlate well with the calculated dose rates.

We conclude that dose attributable to the storage of spent fuel in the ISFSI is not measurable beyond the immediate area of the ISFSI and is well below regulatory limits. We further conclude that dose to a member of the general public attributable to all SONGS related radiological activities at the EAB is below 10 CFR 72.104 limits.

105

TABLE J-1 ISFSI TLD DATA ISFSI TLD 2001 2002 2003 2004 Number Location 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr (1) 1st Qtr 2nd Qtr 3rd Qtr (2) 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr TLD 301 (3) 17.3 18.42 17.91 18.51 24.56 17.23 18.47 17.09 17.39 18.86 18.0 17.7 15.49 TLD 302 (3) 20.28 20.67 19.59 19.46 125.78 20.32 20.77 19.3 21.97 23.57 26.37 20.02 19.11 TLD 303 (3) 18.96 18.82 18.26 18.11 156.89 20.45 25.74 26.56 27.06 28.54 29.98 24.59 24.72 TLD 304 (3) 18.06 19.1 18.28 17.95 64.53 19.57 28.34 33.25 31.8 34.72 33.22 29.74 28.44 TLD 305 (3) 18.99 20.49 19.68 19.82 147.33 TLD 306 (3) 17.23 18.56 16.91 17.07 29.6 19.03 19.75 17.3 17.27 18.85 17.31 15.7 16.08 TLD 307 (3) 17.34 19.61 17.68 17.36 23.35 24.07 20.3 16.24 16.82 18.07 17.62 15.53 15.11 TLD 308 (3) 18.75 20.11 18.9 18.68 27.22 21.82 21.31 18.35 18.73 20.55 21.72 18.11 15.82 TLD 309 (3) 18.74 23.09 23.43 24.43 30.53 21.78 20.49 18.44 16.85 20.15 21.44 18.72 17.34 TLD 310 (3) 19.79 25.82 23.47 21.49 25.8 20.74 19.05 18.96 17.59 21.17 21.28 18.19 17.15 TLD 311 (3) 21.29 29.93 25.33 26.43 26.61 25.24 23.59 21.8 19.99 19.06 20.43 18.04 17.52 TLD 312 (3) 21.86 34.08 28.45 30.07 26.45 28.46 27.71 19.88 16.15 15.5 13.87 15.23 13.35 TLD 313 (3) 24.95 36.84 28.78 26.49 25.44 25.78 26.34 25.6 23.4 22.87 21.14 20.68 20.0 TLD 314 (3) 20.67 22.28 20.15 19.58 18.8 19.74 20.23 19.3 19.85 18.84 19.06 17.68 15.83 TLD 315 (3) 23.37 25.7 22.77 22.58 20.82 24.06 23.18 22.77 21.49 20.89 21.36 19.26 18.13 TLD 316 (4) 16.96 18.81 17.83 16.29 18.01 16.72 17.76 16.01 14.97 16.68 19.06 15.15 14.45 TLD 317 (4) 18.07 19.87 20.62 17.95 18.43 16.86 18.82 17.12 16.02 17.41 17.51 16.96 14.94 TLD 318 (4) 17.86 18.91 19.59 18.4 18.3 17.62 19.01 17.72 16.95 18.15 18.31 16.34 16.37 TLD 319 (4) 17.78 19.76 20.01 19.02 18.35 19.14 19.54 18.57 15.88 17.22 19.19 16.48 16.54 TLD 320 (4) 17.83 19.39 19.11 18.34 18.25 17.78 19.41 17.8 16.94 16.36 19.18 16.34 15.93 TLD 321 (4) 18.52 19.84 20.45 18.67 19.41 19.83 21.1 18.46 17.82 18.89 20.8 16.92 15.5 TLD 336 39.12 31.35 30.77 24.63 TLD 337 36.03 49.65 65.77 47.51 TLD 338 45.83 38.84 36.06 30.27 (1) Large Component Removal and start of the long term storage of the Unit 1 Reactor Vessel.

(2) Fuel loaded into the ISFSI pad September 2003.

(3) These TLDs are in an area where radiological materials have been stored or transported.

(4) These TLDs are not in the proximity of radiological activities.

106

TABLE J-1 ISFSI TLD DATA 2005 2006 2007 ISFSI TLD Number 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr (1) 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Location TLD 301 (3) 22.05 33.23 31.2 27.44 31.54 26.99 20.41 18.96 18.11 15.62 19.39 15.76 TLD 302 (3) 31.04 45.99 41 40.43 40.3 35.93 28.72 20.75 19.98 17.1 20.76 16.98 TLD 303 (3) 33.14 49.45 41.54 38.53 39.16 34.51 29.14 25.08 24.93 21.13 20.21 18.09 TLD 304 (3) 34.63 42.62 41.1 37.05 36.66 37.95 29.07 29.71 27.48 25.27 21.85 16.89 TLD 306 (3) 19.92 20.4 20.44 19.24 19.68 24.01 17.65 18.5 19.04 15.95 19.56 17.00 TLD 307 (3) 20.26 24.94 22.08 20.98 21.48 23.22 16.98 16.66 16.93 14.97 19.26 19.07 TLD 308 (3) 21.81 25.3 23.88 23.1 23.42 23.89 18.01 17.82 18.00 14.94 20.56 20.41 TLD 309 (3) 22.1 20.61 19.53 18.14 18.95 22.54 17.08 19.25 17.83 16.86 19.76 19.09 TLD 310 (3) 20.66 20.91 21.08 20.26 20.27 24.21 17.92 19.01 19.21 17.36 20.63 19.22 TLD 311 (3) 21.85 20.94 20.61 19.35 19.48 23.91 17.82 19.49 19.51 16.88 19.27 18.08 TLD 312 (3) 16.88 15.67 15.57 13.81 14.99 19.36 16.18 16.08 15.29 13.47 15.84 14.24 TLD 313 (3) 26.97 26.36 26.45 25.93 26.33 33.12 36.28 25.34 22.97 20.26 20.33 TLD 314 (3) 21.79 20.26 20.83 20.05 20.67 28.09 45.96 24.18 18.31 15.54 17.7 17.12 TLD 315 (3) 22.84 20.28 20.61 19.65 20.61 28.62 36.53 22.32 18.54 16.36 18.67 18.36 TLD 316 (4) 19.02 18.62 19.7 19.5 19.34 21.3 14.77 16.59 17.15 13.08 16.18 15.76 TLD 317 (4) 20.04 21.48 21.19 19.89 21.21 23.92 17.57 16.77 17.54 14.28 17.21 15.88 TLD 318 (4) 21.56 19.82 19.23 18.44 19.22 23.38 16.96 17.93 20.25 15.77 20.37 17.59 TLD 319 (4) 20.94 19.42 19.02 18.13 18.23 21.76 15.88 16.45 19.86 15.11 18.31 17.52 TLD 320 (4) 21.89 19.91 20.42 19.54 20.39 23.05 17.29 17.1 19.68 15.64 18.66 16.89 TLD 321 (4) 21.34 20.15 20.83 20.12 20.75 23.67 17.9 18.03 20.48 16.71 18.91 17.94 TLD 336 39.5 63.71 67.54 73.3 78.47 51.74 61.25 34.02 60.62 61.1 64.19 TLD 337 54.46 64.07 59.43 68.36 62.62 92.87 116.8 44.67 54.8 39.09 43.46 TLD 338 40.18 44.51 42.75 46.49 42.78 45.02 51.58 36.63 34.45 26.48 29.42 (1) Large Component Removal and start of the long term storage of the Unit 1 Reactor Vessel.

(2) Fuel loaded into the ISFSI pad September 2003.

(3) These TLDs are in an area where radiological materials have been stored or transported.

(4) These TLDs are not in the proximity of radiological activities.

107

TABLE J-2 REMP TLDs WITHIN THE EAB REMP 2001 2002 2003 2004 TLD Number 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Location (1) (2) 11 13.61 15.63 13.89 16.57 15.39 17.2 15.17 14.38 13.89 17.43 15.29 14.93 16.02 15.35 15.52 14.26 12 13.59 16.28 14.81 15.79 15.75 16.4 16.01 13.93 14.96 17.64 16.04 15.19 16.49 16.25 15.01 14.22 13 28.13 33.16 38.84 31.06 31.03 37.64 38.2 22.62 27.26 28.38 33.11 21.08 21.67 20.34 22.45 22.84 15 15.63 18.37 16.07 17.76 17.32 20.82 16.79 15.63 16.52 19.11 15.44 16.36 17.37 16.23 19.52 16.95 16 17.46 18.16 19.61 17.66 17.14 18.25 17.91 13.61 15.04 18.48 17.77 15.53 19.27 17.62 16.31 15.37 41 13.51 16.47 14.3 14.63 15.24 17.41 15.13 13.32 15.98 16.41 14.32 15.03 16.26 14.45 14.85 13.85 55 17.11 19.37 15.93 18.98 20.11 19.89 17.67 17.84 18.08 19.86 18.04 18.2 20.06 16.67 18.67 16.72 56 16.39 19.17 15.57 18.77 18.11 20.12 17.31 17.05 17.84 19.71 17.11 17.26 19.12 17.63 17.63 16.69 57 15.88 18.51 16.29 19.19 17.96 19.09 16.03 15.8 16.18 17.44 16.69 15.85 17.8 16.64 15.56 16.69 58 16.29 18.97 16.22 17.45 17.4 18.65 16.39 15.88 16.75 18.94 17.39 (3) 18.17 17.66 18.08 15.88 59 14.65 17.56 16.14 16.54 17.45 18.31 17.12 16.11 16.88 18.79 17.23 15.51 19.0 20.07 18.18 17.08 73 22.97 25.29 22.41 22.71 22.94 23.48 24.9 21.47 22.1 23.91 22.53 22.47 23.02 22.02 23.64 20.67 (1) Large Component Removal and the start of the long term storage of the Unit 1 Reactor Vessel.

(2) Spent Fuel Storage started at the ISFSI (3) TLD damaged; no data available.

108

TABLE J-2 REMP TLDs WITHIN THE EAB REMP TLD 2005 2006 2007 Number st nd rd th st nd rd th Location 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1 Qtr 2 Qtr 3 Qtr 4 Qtr 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr 11 15.96 15.49 16.04 14.38 15.44 16.62 15.06 17.08 16.07 14.14 17.28 14.29 12 17.79 16.14 16.59 14.81 14.87 18.82 13.82 17.3 17.12 14.21 17.7 14.75 13 24.28 29.32 25.68 17.95 23.52 31.94 34.84 28.16 32.85 24.77 27.52 30.7 15 20.94 19.06 19.29 17.7 18.84 20.97 18.69 20.14 21.28 18.98 21.51 18.99 16 22.12 18.18 17.2 16.16 15.78 20.39 19.88 20.84 22.69 18.43 19.25 17.58 41 16.66 17.04 15.45 14.47 14.76 17.71 14.95 15.84 16.12 14.82 17.12 14.98 55 21.64 21.73 19.07 20.51 20.95 21.69 18.44 16.78 19.99 16.64 20.34 15.34 56 20.66 21.39 19.59 18.75 20.7 22.99 18.84 17.76 19.5 16.73 19.76 15.79 57 21.4 21.79 19.86 19.1 18.73 21.63 17.7 18.41 20.02 16.89 21.00 16.84 58 20.19 20.15 19.93 18.2 17.71 20.78 16.78 18.16 19.53 16.32 21.4 17.44 59 21.18 22.58 21.52 20.35 20.07 22.08 17.89 19.74 19.94 17.93 20.53 16.59 73 26.83 24.81 23.35 22.34 21.12 23.52 24.27 25.2 26.60 22.96 24.05 20.37 109

Figure 6-1 ISFSl TLDs and REMP TLDs within the EAB

+ ISFSl TLDs

@ REMPTLDs EAB (10 CFR 50 Exclusion Area Boundary)

II I and CAB (10 CFR 72 ControlledArea Boundary)

- SeawalllFenceline Railroad Major Road Local Street File Name: 2 0 0 7 A R E O R ~ F i g u r e 6 l ~ l I x 8 . m d Date: 03/20/2008 Reproduced with permission granted by THOMAS BROS MAPS @

BThomasBros. Maps. All rightsr-ed.

Features depicted herein are planning level accuracy, and intended for informational purposes only. Distances and locations may be distded at this scale. Always consult with the proper legal documents M agencies regarding such features. B C o r p ~ a t eRea Page 110 Estate De~artment,RE0 - S u w w and MaDDinq Section.

Page 111 REMP TLD 59 I 0

I 7'---Unit 1 Reactor Vessel Figure 6-2

+33T ISFSl Foundation ISFSl TLDs and selected REMP TLDs near to the ISFSl foundation 0 REMPTLDs

+ ISFSlTLDs Major Road Local Street N

File Name: 2007AREOR~Figure62~1Ix8.md Date: 03/20/2008 REMP-TLD Reproduced with permission granted by THOMAS BROS MAPS @ 561 BThomasBros. Maps. All rightsr-ed.

Features depicted herein are planning level accuracy, and intended for Page 110 informational purposes only. Distances and locations may be distded at mis scale. Always consult with the proper legal documents or agencies Pacific Ocean regarding such features. B Corporate Real Estate Department, RE0 -

S u m y and Mapping Section.

112 Appendix K Local Drinking Water Wells 113

Local Drinking Water Well Data Samples collected from the drinking water wells closest to SONGS were analyzed in October 2006. See figure 7-1 for the well locations and the groundwater directional flow.

The analysis results are summarized below. The 2007 data for San Clemente well # 6 is included in the data summary contained in Appendix B.

Summary of local drinking water well analyses Camp Pendleton Well # 530028 < LLD tritium < LLD gamma isotopic Camp Pendleton Well # 530028 < LLD tritium < LLD gamma isotopic Camp Pendleton Well # 530028 < LLD tritium < LLD gamma isotopic Camp Pendleton Well # 530028 < LLD tritium < LLD gamma isotopic San Clemente Well # 6 < LLD tritium < LLD gamma isotopic Local drinking water well a priori LLDs Tritium 2000 pCi/

Mn54 15 pCi/

Fe59 30 pCi/

Co58 15 pCi/

Co60 15 pCi/

Zr95 15 pCi/

Nb95 15 pCi/

I-131 15 pCi/

Cs134 15 pCi/

Cs137 18 pCi/

Ba140 15 pCi/

La140 15 pCi/

114

Page 111 PACIFIC

/"

OCEAN radius Figure 7-1 Drinking Water Wells Units 213 Midpoint Drinking Water Wells Groundwater Flow Direction SONGS Facilities 1-1 County Boundary Freeway Major Road Local Street

- Railroad 0.5 0 0.5 Miles File Name: 2007AREOR-Figure7-1-llx8.md Date: 03/20/2008 Reproduced vvlh pemlsslon granted by THOMAS BROS MAPS @

OThomas Bros Maps All nghts reserved Page 115