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Annual Radioactive Effluent Release Report - 2011, Enclosure 1
	ML12118A098
Person / Time
Site:	San Onofre
Issue date:	12/31/2011
From:	; Southern California Edison Co
To:	; Office of Nuclear Reactor Regulation, NRC/FSME
References
	Download: ML12118A098 (75)
	v • d • e

SAN ONOFRE NUCLEAR GENERATING STATION Annual Radioactive Effluent Release Report 2011 January - December

PREFACE

San Onofre Nuclear Generating Station is located next to San Onofre State Beach, adjoining Camp Pendleton Marine Corps Base, in San Diego County, 64 miles south of Los Angeles, California.

There are two operating pressurized water reactors with a total rated capacity of 2254 net megawatts electrical.

Unit 1, rated at 410 net megawatts electrical, was supplied by Westinghouse Electric Company and began commercial operation on January 1, 1968. The unit was permanently shutdown on November 30, 1992. By August 31, 2004, all fuel was transferred to the Independent Spent Fuel Storage Installation (ISFSI). By November 29, 2006, all remaining monitored effluent pathways were permanently removed from service. Unit 1 is owned by Southern California Edison (80%) and San Diego Gas and Electric (20%).

Unit 2 and Unit 3 were supplied by Combustion Engineering, Inc., with turbine generators supplied by G.E.C. Turbine Generators, Ltd., of England. The units began commercial operation on August 18, 1983, and April 1, 1984, respectively and are rated at 1127 net megawatts electrical each. The twin units are owned by Southern California Edison (78.21%), San Diego Gas and Electric (20%),

and the City of Riverside (1.79%).

Effective December 29, 2006, the City of Anaheim has transferred its ownership interests in San Onofre Units 2 and 3 and the entitlement to the Units 2 and 3 output, to Southern California Edison Company, except that it retains its ownership interests in its spent nuclear fuel and Units 2 and 3's independent spent fuel storage installation located on the facility's site. In addition, the City of Anaheim retains financial responsibility for its spent fuel and for a portion of the Units 2 and 3 decommissioning costs. The City of Anaheim remains a licensee for purposes of its retained interests and liabilities.

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San Onofre Nuclear Generating Station

TABLE OF CONTENTS SECTIO N A - INTRO DUCTIO N ................................................................................................. 1 SECTION B - GASEOUS EFFLUNTS ......................................................................................... 2 SECTION C - LIQUID EFFLUENTS ........................................................................................... 11 SECTION D PREVIOUS RADIOACTIVE EFFLUENT RELEASE REPORT ADDENDUM ...... 19 SECTION E RADWASTE SHIPMENTS UNITS 2 &3 ......................................................................................................................... 20 C O MMO N .......................................................................................................................... 25 SECTION F - APPLICABLE LIMITS ........................................................................................... 27 SECTION G - ESTIMATION OF ERROR .................................................................................. 31 SECTION H - 10 CFR 50 APPENDIX I REQUIREMENTS ....................................................... 32 SECTION I - CHANGES TO OFFSITE DOSE CALCULATION MANUAL .................................. 36 SECTION J - CHANGES TO RADIOACTIVE WASTE TREATMENT SYSTEMS ...................... 40 SECTION K MISCELLANEOUS ............................................................................................... 41 A bno rm al R eleases ............................................................................................................ 41 Planned Unmonitored Releases .................................................................................... 42 Effluent Monitors Out of Service Greater Than 30 days ................................................. 43 Onsite Groundwater Samples ......................................................................................... 46 40 C FR 190 Requirem ents ............................................................................................. 51 C a rb o n -14 .......................................................................................................................... 52 SECTION L -S.O.N.G.S. CONCLUSIONS ................................................................................ 53 MET E O RO LO GY ........................................................................................................................... 54

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ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION A. INTRODUCTION This Annual Radioactive Effluent Release Report summarizes the gaseous and liquid radioactive effluent releases and radwaste shipments made from the San Onofre Nuclear Generating Station, Units 2 and 3. This report is prepared in the general format of USNRC Regulatory Guide 1.21 and includes:

1. Quarterly Summaries of Gaseous and Liquid Effluents for "Continuous" and "Batch" Modes of Release

2. Percent of Applicable Limits

3. Estimated Total Percent Error

4. Lower Limit of Detection Concentrations

5. Batch Release Summaries

6. Previous Radioactive Effluent Release Report Addendum

7. Radwaste Shipments

8. 10 CFR 50 Appendix I Requirements

9. Changes to Offsite Dose Calculation Manual ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION B. GASEOUS EFFLUENTS Table 1A, "Gaseous Effluents Summation of All Releases," provides a detailed listing of gaseous effluents released quarterly in four categories: fission and activation gases, iodine 131, particulates with half lives greater than eight days, and tritium. Listed for each of the four categories are:

(1) the total curies released (2) the average release rate (3) the percent of applicable limit (4) the estimated total error In addition, the particulate category lists the gross alpha radioactivity released for each quarter.

The methodology used to calculate the percent of Applicable Limit is presented in Section F of this report. The methodology used in Table 1A to calculate the estimated total error is presented in Section G of this report.

Table 1B, "Gaseous Effluents Elevated Release," has not been included in this report since San Onofre Nuclear Generating Station Units 2 and 3 do not conduct elevated releases.

Table 1C, "Gaseous Effluents Ground Level Releases," provides the systematic listing by radionuclide for the quantity of radioactivity released in three categories: fission gases, iodines, and particulates. The total radioactivity for each radionuclide is listed for each quarterly period by both "continuous" and "batch" modes of release.

Waste gas decay tank releases are considered to be "batch" releases. Containment purges and plant stack releases are considered to be "continuous" releases.

Table 1D, "Gaseous Effluents Lower Limit of Detection," provides a listing of lower limit of detection concentrations for radionuclides not detected in Tables 1A and lC.

Table 1 E, "Gaseous Effluents Radiation Doses at the Site Boundary," provides a quarterly summary of doses at the site boundary for this report period.

Table 1F, "Gaseous Effluents Batch Release Summary," provides summary information regarding batch releases conducted during this report period from San Onofre Nuclear Generating Station.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1A GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES Estimated First Second Total Unit Quarter Quarter Error. %

A. Fission and activation gases

1. Total release Ci 1.58E+1 2.19E+1

2. Average release rate for period pCi/sec 2.03E+0 2.78E+0 3.00E+1

3. Percent of applicable limit % MPC 1.02E-2 8.59E-3

4. Percent Effluent Concentration Limit % ECL 2.66E-2 1.76E-2 B. lodines

1. Total 1-131 Ci 1.10E-4 1.33E-4

2. Average release rate for period pCi/sec 1.41 E-5 1.69E-5 1.90E+1

3. Percent of applicable limit % MPC 6.79E-5 8.12E-5

4. Percent Effluent Concentration Limit % ECL 3.40E-5 4.06E-5 C. Particulates

1. Particulates with half-lives >8 days Ci 6.35E-5 1.84E-6

2. Average release rate for period pCi/sec 8.16E-6 2.34E-7 1 .60E+1

3. Percent of applicable limit % MPC 4.75E-6 5.62E-8

4. Percent Effluent Concentration Limit % ECL 2.16E-5 1.12E-7

5. Gross alpha activity Ci <LLD <LLD 5.00E+1 D. Tritium

1. Total release Ci 1.80E+1 4.12E+1

2. Average release rate for period pCi/sec 2.31E+O 5.24E+O 2.50E+1

3. Percent of applicable limit % MPC 5.56E-3 1.26E-2

4. Percent Effluent Concentration Limit % ECL 1.11E-2 2.52E-2 LLD Lower Limit of Detection; see Table 1 D (1) On 2/7/11 and 2/8/11, for approximately 9 hours1.041667e-4 days 0.0025 hours 1.488095e-5 weeks 3.4245e-6 months condenser air ejector particulate and iodine sample were missed.

The previous and subsequent samples, which had no measurable activity, were used to estimate the activity during the missed sample period.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1A (Continued)

GASEOUS EFFLUENTS SUMMATION OF ALL RELEASES Estimated Third Fourth Total Unit Quarter Quarter Error, %

A. Fission and activation gases

1. Total release Ci 3.09E+1 3.41E+1

2. Average release rate for period pCi/sec 3.88E+O 4.29E+0

3. Percent of applicable limit % MPC 6.39E-3 8.39E-3

4. Percent Effluent Concentration Limit % ECL 4.51 E-3 1.10E-2 B. lodines

1. Total I1-131 Ci 3.01E-4 2.04E-4

2. Average release rate for period pCi/sec 3.79E-5 2.57E-5 1.90E+1

3. Percent of applicable limit % MPC 1.82E-4 1.23E-4

4. Percent Effluent Concentration Limit % ECL 9.09E-5 6.16E-5 C. Particulates

1. Particulates with half-lives >8 days Ci <LLD 3.29E-5

2. Average release rate for period pCi/sec N/A 4.14E-6 1 .60E+1

3. Percent of applicable limit % MPC N/A 9.93E-7

4. Percent Effluent Concentration Limit % ECL N/A 1.99E-6

5. Gross alpha activity Ci <LLD <LLD 5.00E+1 D. Tritium

1. Total release Ci 1.04E+1 1.10E+1

2. Average release rate for period pCi/sec 1.31 E+0 1.38E+0 2.50E+1

3. Percent of applicable limit % MPC 3.14E-3 3.32E-3

4. Percent Effluent Concentration Limit % ECL 6.28E-3 6.64E-3 LLD Lower Limit of Detection; see Table 1 D ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1C GASEOUS EFFLUENTS GROUND LEVEL RELEASES CONTINUOUS MODE First Second Third Fourth Radionuclides Released Unit Quarter Quarter Quarter Quarter

1. Fission and activation gases argon-41 Ci 3.21E+0 2.1OE+0 1.33E-1 1.17E+0 krypton-85 Ci <LLD <LLD <LLD <LLD krypton-85m Ci 1.52E-1 9.88E-2 <LLD <LLD krypton-87 Ci 1.63E-1 8.86E-2 <LLD <LLD krypton-88 Ci 2.93E-1 1.84E-1 <LLD <LLD xenon-133 Ci 8.55E+0 1.85E+1 3.07E+1 3.29E+1 xenon-1 33m Ci 6.87E-2 7.23E-2 <LLD <LLD xenon-135 Ci 9.96E-1 6.72E-1 <LLD <LLD xenon-135m Ci 1.01E-1 5.80E-2 <LLD <LLD xenon-138 Ci 1.40E-1 9.29E-2 <LLD <LLD Total for period Ci 1.37E+1 2.19E+1 3.09E+1 3.41E+1

2. lodines iodine-131 Ci 1.10E-4 1.33E-4 3.01E-4 2.04E-4 iodine-1 32 Ci <LLD 2.92E-7 <LLD <LLD iodine-133 Ci 6.94E-5 1.39E-4 2.22E-4 3.53E-4 iodine-135 Ci <LLD <LLD <LLD <LLD Total for period Ci 1.80E-4 2.72E-4 5.23E-4 5.57E-4 LLD Lower Limit of Detection; see Table ID.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1C (Continued)

GASEOUS EFFLUENTS-GROUND LEVEL RELEASES CONTINUOUS MODE First Second Third Fourth Radionuclides Released Unit Quarter Quarter Quarter Quarter

3. Particulates barium-140 Ci <LLD <LLD <LLD <LLD bromine-82 Ci 1.16E-5 1.96E-5 2.81E-5 8.25E-5 cerium-141 Ci <LLD <LLD <LLD <LLD cerium-144 Ci <LLD <LLD <LLD <LLD cesium-134 Ci 2.48E-6 <LLD <LLD <LLD cesium-137 Ci 1.80E-6 <LLD <LLD <LLD chromium-51 Ci 9.39E-7 <LLD <LLD <LLD cobalt-57 Ci 4.29E-8 <LLD <LLD <LLD cobalt-58 Ci 4.01E-5 1.84E-6 <LLD 3.29E-5 cobalt-60 Ci 1.46E-5 <LLD <LLD <LLD iron-59 Ci <LLD <LLD <LLD <LLD lanthanum-140 Ci <LLD <LLD <LLD <LLD manganese-54 Ci 2.93E-7 <LLD <LLD <LLD.

molybdenum-99 Ci <LLD <LLD <LLD <LLD niobium-95 Ci 2.78E-6 <LLD <LLD <LLD strontium-89 Ci <LLD <LLD <LLD <LLD strontium-90 Ci <LLD <LLD <LLD <LLD tellurium-1 32 Ci 2.23E-6 <LLD <LLD <LLD zinc-65 Ci <LLD <LLD <LLD <LLD zirconium-95 Ci 4.39E-7 <LLD <LLD <LLD LLD Lower Limit of Detection; see Table 1 D.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1C (Continued)

GASEOUS EFFLUENTS GROUND LEVEL RELEASES BATCH MODE

First Second Third Fourth Radionuclides Released Unit Quarter Quarter Quarter Quarter 1 Fission and activation gases argon-41 Ci 2.07E-1 N/A N/A N/A krypton-85 Ci 1.64E+0 N/A N/A N/A krypton-85m Ci 8.37E-3 N/A N/A N/A krypton-87 Ci 7.99E-3 N/A N/A N/A krypton-88 Ci 1.70E-2 N/A N/A N/A xenon-133 Ci 1.63E-1 N/A N/A N/A xenon-133m Ci 6.04E-3 N/A N/A N/A xenon-135 Ci 4.90E-2 N/A N/A N/A xenon-1 35m Ci 6.23E-3 N/A N/A N/A xenon-138 Ci 1.75E-2 N/A N/A N/A Total for period Ci 2.12E+0 N/A N/A N/A N/A No batch releases during second, third or fourth quarters of 2011

lodines and particulates are not analyzed prior to release via batch mode.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1 D GASEOUS EFFLUENTS LOWER LIMIT OF DETECTION CONTINUOUS and BATCH MODE Continuous Mode Batch Mode Radionuclides LLD (pCi/cc) LLD (pCi/cc) 1 Fission and activation gases krypton-85 3.OOE-5 1.40E-3 krypton-85m 7.50E-8 3.1OE-6 krypton-87 3.80E-7 1.40E-5 krypton-88 2.70E-7 1.1OE-5 xenon-133

9.90E-6 xenon-133m 6.OOE-7 2.70E-5 xenon-135 7.70E-8 3.50E-6 xenon-135m 2.90E-6 4.40E-5 xenon-1 38 5.OOE-6 6.70E-5

2. lodines iodine-132 2.1OE-9 N/A iodine-135 2.4E-10 N/A

3. Particulates barium-140 7.20E-13 N/A cerium-141 8.30E-14 N/A cerium-144 3.40E-13 N/A cesium-134 2.OOE-13 N/A cesium-1 37 1.70E-13 N/A chromium-51 7.70E-13 N/A cobalt-57 4.30E-14 N/A cobalt-58 1.80E-13 N/A cobalt-60 2.90E-13 N/A iron-59 4.50E-13 N/A lanthanum-140 1.40E-12 N/A manganese-54 1.80E-13 N/A molybdenum-99 1.OOE- 13 N/A niobium-95 1.80E-13 N/A strontium-89 1.OOE-11 N/A strontium-90 1.OOE-11 N/A tellurium-132 1.20E-13 N/A zinc-65 4.80E-13 N/A zirconium-95 3.10E-13 N/A

4. alpha 1.OOE-1I N/A Radionuclide was >LLD in all 4 quarters ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1E GASEOUS EFFLUENTS RADIATION DOSES AT THE SITE BOUNDARY First Second Third Fourth Radionuclides Released Unit Quarter Quarter Quarter Quarter A. Noble Gas

1. Gamma Air Dose mrad 6.79E-3 4.85E-3 1.84E-3 3.42E-3

2. Percent Applicable Limit % 6.79E-2 4.85E-2 1.84E-2 3.42E-2

3. Beta Air Dose mrad 4.57E-3 4.59E-3 4.97E-3 5.84E-3

4. Percent Applicable Limit % 2.28E-2 2.30E-2 2.49E-2 2.92E-2 B. Tritium, Iodine, Particulates (at the nearest receptor)

1. Organ Dose mrem 3.18E-3 6.59E-3 2.26E-3 2.24E-3

2. Percent Applicable Limit % 2.12E-2 4.39E-2 1.51E-2 1.49E-2 NOTE: Calculations performed in accordance with the ODCM utilizing the historical X/Q.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1F GASEOUS EFFLUENTS BATCH RELEASE

SUMMARY

12 month period

1. Number of batch releases: 3 releases

2. Total time period for batch releases: 2654 minutes

3. Maximum time period for a batch release: 1564 minutes

4. Average time period for a batch release: 885 minutes

5. Minimum time period for a batch release: 476 minutes ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION C. LIQUID EFFLUENTS Table 2A, "Liquid Effluents Summation of All Releases," provides a detailed summary of liquid effluents released quarterly in three categories: fission and activation products, tritium, and dissolved and entrained gases. Listed for each of the three categories are:

(1) the total curies released (2) the average diluted concentration (3) the percent of applicable limit (4) the estimated total error In addition, Table 2A lists:

(1) the gross alpha radioactivity (2) the volume of waste released (prior to dilution)

(3) the volume of dilution water The methodology used to calculate the percent of applicable limit is presented in Section F of this report. The methodology used to calculate the estimated total error in Table 2A is presented in Section G of this report.

Table 2B, "Liquid Effluents," provides the systematic listing by radionuclide for the quantity of radioactivity released in each category. The total radioactivity of each radionuclide released is listed for each quarterly period by both "continuous" and "batch" modes of release.

Table 2C, "Liquid Effluents Lower Limit of Detection," provides a listing of lower limit of detection concentrations for radionuclides not detected in Table 2B.

Table 2D, "Liquid Effluents Radiation Doses at the Liquid Site Boundary," presents a quarterly summary of doses at the Liquid Site Boundary for this report period.

Table 2E, "Liquid Effluents Batch Release Summary," provides summary information regarding batch releases conducted during this report period from San Onofre Nuclear Generating Station.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 2A LIQUID EFFLUENTS SUMMATION OF ALL RELEASES Estimated First Second Total Unit Quarter Quarter Error, %

A. Fission and activation products

1. Total release (not including tritium, Ci 3.40E-4 1.66E-3 gases, alpha)

2. Average diluted concentration C/l 4.92E-13 2.16E-12 during period pim 1.90E+1

3. Percent of applicable limit % MPC 1.19E-6 3.14E-6

4. Percent Effluent Concentration Limit % ECL 3.15E-6 2.42E-5 B. Tritium

1. Total release Ci 3.11E+1 1.53E+2

2. Average diluted concentration pCi/mI 4.50E-8 2.OOE-7

2. _i/ml during period _ 4.50E-8 2.00E- 1.90E+1

3. Percent of applicable limit % MPC 1.50E-3 6.67E-3

4. Percent Effluent Concentration Limit % ECL 4.50E-3 2.OOE-2 C. Dissolved and entrained gases

1. Total release Ci 5.53E-6 5.OOE-3

2. Average diluted concentration pCi/mI 8.OOE-15 6.54E-12 during period im .- 5 1 1.90E+1

3. Percent of applicable limit % MPC 4.OOE-9 3.27E-6

4. Percent Effluent Concentration Limit % ECL 4.OOE-9 3.27E-6 D. Gross alpha activity

1. Total release Ci <LLD <LLD 5.00E+1 E. Volume of waste released (batch &

continuous, prior to dilution) liters 5.82E+7 6.69E+7 5.OOE+O F. Volume of dilution water used during period liters 6.91E+1 1 7.65E+11 5.OOE+0 LLD Lower Limit of Detection; see Table 2C.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 2A (Continued)

LIQUID EFFLUENTS SUMMATION OF ALL RELEASES Estimated Third Fourth Total Unit Quarter Quarter Error, %

A. Fission and activation products

1. Total release (not including Ci 9.64E-4 6.59E-3 tritium, gases, alpha)

2. Average diluted concentration PCi/mI 1.25E-12 8.52E-12 during period I__i/ml 1.25E12_8.2E-1 1.90E+1

3. Percent of applicable limit % MPC 1.33E-5 3.01E-5 Percent Effluent Concentration % ECL 2.95E-5 6.96E-5 Limit I B. Tritium

1. Total release Ci 2.25E+2 7.49E+2

2. Average diluted concentration pCi/mI 2.92E-7 9.68E-7 during period 1.90E+1

3. Percent of applicable limit % MPC 9.73E-3 3.23E-2 Percent Effluent Concentration % ECL 2.92E-2 9.68E-2 Limit C. Dissolved and entrained gases

1. Total release Ci 2.50E-2 1.OOE+O

2. Average diluted concentration during period Ci/m 3.24E-11 1.30E-9E+1

3. Percent of applicable limit % MPC 1.62E-5 6.48E-4 Percent Effluent Concentration % ECL 1.62E-5 6.48E-4 Limit D. Gross alpha activity

1. Total release Ci <LLD ** 5.00E+1 E. Volume of waste released (batch &

continuous, prior to dilution) liters 6.59E+7 5.24E+7 5.OOE+0 F. Volume of dilution water used during period liters 7.71E+1 1 7.74E+11 5.OOE+0 LLD Lower Limit of Detection; see Table 2C.

Fourth quarter analysis not available at report time: values will be included in the next Annual Report.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 2B LIQUID EFFLUENTS CONTINUOUS MODE First Second Third Fourth Radionuclides Released Unit Quarter Quarter Quarter Quarter 1 Fission and activation products barium-140 Ci <LLD <LLD <LLD <LLD cerium-141 Ci <LLD <LLD <LLD <LLD cerium-144 Ci <LLD <LLD <LLD <LLD cesium-1 34 Ci <LLD <LLD <LLD <LLD cesium-1 37 Ci <LLD <LLD 8.86E-6 <LLD chromium-51 Ci <LLD <LLD <LLD <LLD cobalt-58 Ci <LLD <LLD <LLD <LLD cobalt-60 Ci <LLD <LLD <LLD <LLD iodine-131 Ci <LLD <LLD <LLD <LLD iron-55 Ci <LLD <LLD <LLD **

iron-59 Ci <LLD <LLD <LLD <LLD lanthanum-140 Ci <LLD <LLD <LLD <LLD manganese-54 Ci <LLD <LLD <LLD <LLD molybdenum-99 Ci <LLD <LLD <LLD <LLD niobium-95 Ci <LLD <LLD <LLD <LLD strontium-89 Ci <LLD <LLD <LLD **

strontium-90 Ci <LLD <LLD <LLD **

technetium-99m Ci <LLD <LLD <LLD <LLD zinc-65 Ci <LLD <LLD <LLD <LLD zirconium-95 Ci <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD 8.86E-6 <LLD

2. Dissolved and entrained gases xenon-133 Ci <LLD <LLD <LLD <LLD xenon-135 Ci <LLD <LLD <LLD <LLD Total for period Ci <LLD <LLD <LLD <LLD LLD Lower Limit of Detection; see Table 2C.

Fourth quarter analysis not available at report time: values will be included in the next Annual Report.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 2B (Continued)

LIQUID EFFLUENTS BATCH MODE First Second Third Fourth Radionuclides Released Unit Quarter Quarter Quarter Quarter

1. Fission and activation products antimony-1 22 Ci <LLD <LLD <LLD 3.46E-6 antimony-125 Ci <LLD 1.72E-4 3.02E-4 7.49E-4 barium-140 Ci <LLD <LLD <LLD <LLD cerium-141 Ci <LLD <LLD <LLD <LLD cerium-144 Ci <LLD <LLD <LLD <LLD cesium-134 Ci <LLD 3.59E-6 1.90E-5 1.29E-7 cesium-1 37 Ci <LLD 6.47E-5 9.84E-5 8.08E-5 chromium-51 Ci <LLD 5.83E-5 4.66E-5 1.75E-3 cobalt-57 Ci <LLD 8.20E-6 <LLD <LLD cobalt-58 Ci 3.1OE-4 1.18E-3 2.55E-4 2.69E-3 cobalt-60 Ci 1.76E-5 1.45E-4 1.41 E-4 6.43E-4 iodine-131 Ci <LLD <LLD 2.51E-5 4.80E-5 iron-55 Ci <LLD <LLD <LLD **

iron-59 Ci <LLD <LLD <LLD <LLD lanthanum-140 Ci <LLD <LLD <LLD <LLD manganese-54 Ci <LLD <LLD 2.02E-6 1.16E-4 molybdenum-99 Ci <LLD <LLD <LLD <LLD niobium-95 Ci <LLD 5.38E-6 5.16E-5 2.65E-4 silver- 110m Ci <LLD 1.88E-5 1.41 E-5 6.37E-5 strontium-89 Ci <LLD <LLD <LLD **

strontium-90 Ci <LLD <LLD <LLD **

technetium-99m Ci <LLD <LLD <LLD <LLD tin-117m Ci 1.25E-5 <LLD <LLD <LLD zinc-65 Ci <LLD <LLD <LLD <LLD zirconium-95 Ci <LLD <LLD <LLD 1.82E-4 Total for period Ci 3.40E-4 1.66E-3 9.55E-4 6.59E-3

2. Dissolved and entrained gases krypton-85 Ci <LLD 4.98E-3 2.46E-2 9.04E-1 xenon-131m Ci <LLD <LLD <LLD 1.65E-2 xenon-133 Ci 5.53E-6 2.55E-5 4.OOE-4 8.31E-2 xenon-1 35 Ci <LLD <LLD <LLD <LLD Total for period Ci 5.53E-6 5.OOE-3 2.50E-2 1.OOE+0 LLD Lower Limit of Detection; see Table 2C.

Fourth quarter analysis not available at report time: values will be included in the next Annual Report.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 2C LIQUID EFFLUENTS LOWER LIMIT OF DETECTION Continuous Mode Batch Mode Radionuclides LLD (pCi/cc) LLD (pCi/cc) 1 Fission and activation products antimony- 122 N/A 1.40E-7 antimony-125 N/A 2.OOE-7 barium-140 4.70E-7 3.90E-7 cerium-141 6.60E-8 6.1OE-8 cerium-144 2.70E-7 2.70E-7 cesium- 134 1.20E-7 1.20E-7 cesium-1 37 1.1OE-7 1.1OE-7 chromium-51 5.20E-7 4.80E-7 cobalt-57 N/A 3.60E-8 cobalt-58 1.10E-7

cobalt-60 1.60E-7

iodine-131 9.20E-8 6.90E-8 iron-55 1.OOE-6 1.OOE-6 iron-59 2.60E-7 2.50E-7 lanthanum-140 9.20E-7 3.OOE-7 manganese-54 1.10E-7 1.1OE-7 molybdenum-99 8.70E-8 4.1OE-8 niobium-95 1.10E-7 1.OOE-7 silver-1 1Om N/A 1.60E-7 strontium-89 5.OOE-8 5.OOE-8 strontium-90 5.OOE-8 5.OOE-8 technetium-99m 8.80E-8 4.20E-8 tin-1 17m N/A 3.50E-8 zinc-65 2.80E-7 2.80E-7 zirconium-95 1.90E-7 1.80E-7

2. Dissolved and entrained gases krypton-85 N/A 3.30E-5 xenon-131 m N/A 3.OOE-6 xenon-133 3.40E-7

xenon-135 8.90E-8 8.90E-8

3. gross alpha 1.O0E-7 1.OOE-7

Radionuclide was >LLD in all 4 quarters N/A Radionuclide not detected in continuous flow paths ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 2D LIQUID EFFLUENTS RADIATION DOSES AT THE LIQUID SITE BOUNDARY First Second Third Fourth Unit Quarter Quarter Quarter Quarter A.

1. Total body dose mrem 5.52E-5 2.72E-4 3.90E-4 1.30E-3

2. Percent Applicable Limit % 1.84E-3 9.08E-3 1.30E-2 4.33E-2 B.

1. Limiting organ dose mrem 9.50E-5 4.33E-4 4.75E-4 1.85E-3

2. Percent Applicable Limit % 9.50E-4 4.33E-3 4.75E-3 1.85E-2

3. Limiting organ for period GI-LLI GI-LLI GI-LLI GI-LLI ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 2E LIQUID EFFLUENTS BATCH RELEASE

SUMMARY

12 month period

1. Number of batch releases: 215 releases

2. Total time period for batch releases: 31073 minutes

3. Maximum time period for a batch release: 657 minutes

4. Average time period for a batch release: 145 minutes

5. Minimum time period for a batch release: 79 minutes

6. Average saltwater flow during batch releases: 740000 gpm ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION D. PREVIOUS RADIOACTIVE EFFLUENT RELEASE REPORT ADDENDUM 2007 ARERR SECTION K. MISCELLANEOUS ABNORMAL RELEASES

Waste Gas Decay Tank Leaks Nuclear Oversight audit recommended an engineering evaluation be performed to determine ifthere was a leak from Waste Gas Decay Tank T-088 to the Plant Vent Stack from 07/29/2007 at 1200 to 08/02/2007 at 2200 as reported in the 2007 ARERR. The evaluation determined that the leak was directed back to the waste gas header through MU006. This evaluation is documented in NN 201112449.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION E. RADWASTE SHIPMENTS TABLE 3 (Units 2 & 3)

SOLID WASTE AND IRRADIATED FUEL SHIPMENT A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel) 12 month Estimated

1. Type of waste Unit period total error (%)

a. Spent resins, filter sludge's m 13 3.00E+1

-- 1.38E+1 Ci 7.64E+0

b. Dry active waste (DAW), compactable m3 1.53E+3 and non-compactable 3.00E+1 Ci 4.77E+2

c. Irradiated components m3 N/A N/A Ci N/A

d. Other: Filters m3 7.11E-1

_ 1.1 3.00E+1 Ci 1.19E+'0 Note: Total curie content estimated N/A No shipment made.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel)

2. Estimate of major nuclide composition (Spent resins, filter sludge's)

a. antimony-125 % 5.67E+0 carbon-14 % 2.16E+0 cerium-144 % 9.27E-2 cesium-134 % 9.20E-1 cesium-137 % 2.37E+1 cobalt-57 % 2.71 E-5 cobalt-58 % 1.63E-3 cobalt-60 % 5.07E+0 iodine-129 % 9.62E-3 iron-55 % 5.73E+O iron-59 % 4.15E-5 manganese-54 % 3.81 E-2 nickel-59 % 2.79E-1 nickel-63 % 5.60E+1 niobium-95 % 3.06E-4 strontium-89 % 1.03E-4 strontium-90 % 5.93E-2 technetium-99 % 2.33E-2 tritium % 2.06E-1 zirconium-95 % 1.51 E-4 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel)

2. Estimate of major nuclide composition (DAW)

b. americium-241 % 5.99E-6 antimony-124 % 2.43E-4 antimony- 125 % 1.89E+0 carbon- 14 % 1.78E-2 cerium-144 % 4.63E-4 cesium-1 34 % 3.07E-4 cesium-1 37 % 1.60E-1 chromium-51 % 3.75E-3 cobalt-57 % 2.27E-1 cobalt-58 % 5.28E-1 cobalt-60 % 2.36E+1 curium-242 % 2.97E-6 curium-243/44 % 9.35E-8 iron-55 % 6.67E+1 iron-59 % 1.OOE-3 manganese-54 % 1.74E+0 nickel-63 % 4.97E+0 niobium-95 % 5.21E-3 plutonium-238 % 5.89E-6 strontium-89 % 3.85E-4 strontium-90 % 3.59E-5 technetium-99 % 4.89E-2 tin-1 13 % 1.83E-2 europium-152 % 9.04E-6 zirconium-95 % 1.70E-2

c. not applicable % N/A ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel)

2. Estimate of major nuclide composition (Other: Filters)

d. antimony-125 % 5.12E+0 carbon-14 % 1.09E+0 cerium-144 % 4.82E-2 cesium-1 34 % 4.53E-1 cesium-1 37 % 2.24E+0 cobalt-57 % 2.29E-1 cobalt-58 % 1.94E+0 cobalt-60 % 7.08E+1 iron-55 % 9.26E+0 manganese-54 % 2.58E+0 nickel-63 % 6.03E+0 niobium-95 % 1.61 E-2 strontium-89 % 4.63E-3 strontium-90 % 1.67E-2 tin-113 % 6.25E-2 zirconium-95 % 1.01 E-1 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT.- 2011 SAN ONOFRE NUCLEAR GENERATING STATION A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel)

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 86 Truck/Flatbed Trailer EnergySolutions Clive Utah 1 Type A Cask EnergySolutions Clive Utah 1* Type A Cask EnergySolutions Clive Utah 1"* Truck/Flatbed Trailer EnergySolutions Duratek OakRidge Tennessee 26 Truck/Flatbed Trailer EnergySolutions Duratek OakRidge Tennessee SCE maintains a contract with EnergySolutions Duratek that provides volume reduction services. The processed volume was shipped from the EnergySolutions Duratek facility to the EnergySolutions Clive Utah Burial Site using 55 shipments. Those 55 shipments included waste from other generators. SCE's waste volume was a fraction of the total waste volume of these shipments.

Indicates both Dry Active Waste and Filters were on the same shipment

- Indicates both Dry Active Waste and Resin were on the same shipment B. IRRADIATED FUEL SHIPMENTS (Disposition)

Number of Shipments Mode of Transportation Destination None No shipments were made N/A C. DEWATERING Number of Containers Solidification Agent None N/A ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION E. RADWASTE SHIPMENTS TABLE 3 (COMMON)

SOLID WASTE AND IRRADIATED FUEL SHIPMENT A. SOLID WASTE SHIPPED OFFSITE FOR BURIAL OR DISPOSAL (Not Irradiated Fuel) 12 month Estimated

1. Type of waste Unit period total error (%)

a. Spent resins, filter sludge's, m3 N/A N/A evaporator bottoms Ci N/A

b. Dry active waste (DAW), compactable and non-compactable m3 N/A N/A Ci N/A m3 N/A

c. Irradiated components N/A Ci N/A m3 N/A

d. Other: Filters N/A Ci N/A N/A No shipment made.

2. Estimate of major nuclide composition (by type of waste)

a. not applicable % N/A

b. not applicable % N/A

c. not applicable % N/A

d. not applicable % N/A

3. Solid Waste Disposition (SONGS 1, 2, and 3)

Number of Shipments Mode of Transportation Destination None No shipments were made N/A ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SOLID WASTE AND IRRADIATED FUEL SHIPMENT B. IRRADIATED FUEL SHIPMENTS (Disposition)

Number of Shipments Mode of Transportation Destination None No shipments were made N/A C. DEWATERING Number of Containers Solidification Agent None N/A D. CHANGES TO THE PROCESS CONTROL PROGRAM AT SAN ONOFRE UNITS 1,2 & 3 None.

REFERENCES:

1. Unit 1 Technical Specifications, section D6.13.2.

2. Units 2 and 3 License Controlled Specifications, section 5.0.103.2.2.

3. Procedure S0123-VII-8.5.1 (Rev. 8) "Radwaste Process Control Program".

4. Procedure SO123-VII-8.1.6 (Rev. 5 - TCN 5-1) "Radioactive Waste Shipment Data For The Annual Effluent Release Report".

5. Regulatory Guide 1.21, June 1974.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION F. APPLICABLE LIMITS Gaseous Effluents Applicable Limits The percent of Applicable Limits, tabulated in Sections A, B, C, and D of Table 1A, were calculated using the following equation:

% Applicable Limit = (Rel Rate) (X/Q) (100)

MPCeff where: Rel Rate total curies released in each category and each quarter, divided by the seconds in a quarter; the value in Sections A.2, B.2, C.2 and D.2 of Table 1A, pCi/sec.

X/Q 4.80E-6 sec/m3; the annual average atmospheric dispersion defined in the ODCM.

MPCeff n' Fi i=! MPCi where: Fi fractional abundance of the ith radionuclide obtained by dividing the activity (curies) for each radionuclide, Ci, by the sum of all the isotopic activity, CT.

n = total number of radionuclides identified MPCi - Maximum Permissible Concentration (MPC) of the ith radionuclide from 10 CFR 20 (20.1-20.602), Appendix B, Table II, Column 1.

% ECL (Rel Rate) (X/Q) (100)

ECLeff where: Rel Rate total curies released in each category and each quarter, divided by the seconds in a quarter; the value in Sections A.2, B.2, C.2 and D.2 of Table 1A, pCi/sec.

X/Q 4.80E 6 sec/m 3; the annual average atmospheric dispersion defined in the ODCM.

wherL eff n' Fi Il j ECLi where: Fi fractional abundance of the ith radionuclide obtained by dividing the activity (curies) for each radionuclide, Ci, by the sum of all the isotopic activity, CT.

n = total number of radionuclides identified ECLi = Effluent Concentration Limit (ECL) of the ith radionuclide from 10 CFR 20 (20.1001-20.2402), Appendix B, Table 2, Column 1.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION F. APPLICABLE LIMITS (Continued)

Liquid Effluents Applicable Limits The percent of Applicable Limits, tabulated in Sections A, B, and C of Table 2A, were calculated using the following equations:

% Applicable Limit = (Dil Conc) (100).

MPCeff where: Dil Conc = total curies released in each category and each quarter divided by the total volume released (sum of Sections E and F in Table 2A); the value in Sections A.2, B.2, and C.2 of Table 2A, pCi/ml.

MIPCefr n Fi

= MPCi where: Fi = fractional abundance of the ith radionuclide obtained by dividing the activity (curies) for each radionuclide, Ci, by the sum of all the isotopic activity, CT.

n = total number of radionuclides identified MPCi Maximum Permissible Concentration (MPC) of the i'h radionuclide from 10 CFR 20 (20.1-20.602), Appendix B, Table II, Column 2.

% ECL (Dil Conc) (100)

ECLeff where: Dil Conc total curies released in each category and each quarter divided by the total volume released (sum of Sections E and F in Table 2A); the value in Sections A.2, B.2, and C.2 of Table 2A, pCi/ml.

1 e FCL eff n' Fi ZI i=1 ECLi where: Fi fractional abundance of the ith radionuclide obtained by dividing the activity (curies) for each radionuclide, Ci, by the sum of all the isotopic activity, CT.

n = total number of radionuclides identified ECLi = Effluent Concentration Limit (ECL) of the ith radionuclide from 10 CFR 20 (20.1001-20.2402), Appendix B, Table 2, Column 2.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION F. APPLICABLE LIMITS (Continued)

APPENDIX A GASEOUS EFFLUENTS- APPLICABLE LIMITS A. Table 1A lists the total curies released and the release rate. The percent of applicable limit compares the release concentration limits of 10 CFR 20 Appendix B, Table II, Column 1.

B. Table 1E lists the air doses as calculated using the historical X/Q. The air dose due to noble gases released in gaseous effluents from SONGS (per reactor) to areas at and beyond the site boundary shall be limited to the following values:

1. During any calendar quarter: 5 mrad for gamma radiation and

< 10 mrad for beta radiation.

2. During any calendar year: < 10 mrad for gamma radiation and

< 20 mrad for beta radiation.

C. The dose to a Member of the Public from iodines, tritium, and all radionuclides in particulate form with half-lives greater than eight days in gaseous effluents released from SONGS (per reactor) to areas at and beyond the site boundary shall be limited to the following values:

1. During any calendar quarter: 5 7.5 mrem to any organ.

2. During any calendar year: 5 15 mrem to any organ.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION F. APPLICABLE LIMITS (Continued)

APPENDIX A (Continued)

LIQUID EFFLUENTS- APPLICABLE LIMITS A. Table 2A lists the total curies released, the diluted concentration, and percent of applicable limit.

The percent of applicable limit compares the diluted concentration of radioactive material released to the concentrations specified in 10 CFR 20 Appendix B, Table II, Column 2 for radionuclides other than dissolved or entrained gases. For dissolved or entrained noble gases, the concentration is limited to 2.OOE-4 pCi/ml.

B. Table 2D lists the doses due to liquid releases. The dose commitment to a Member of the Public from radioactive materials in liquid effluent release from SONG (per reactor) to unrestricted areas shall be limited to the following values:

1. During any calendar quarter: < 1.5 mrem to the total body and

-<5 mrem to any organ.

2. During any calendar year: < 3 mrem to the total body and

< 10 mrem to any organ.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION G. ESTIMATION OF ERROR Estimations of the error in reported values of gaseous and liquid effluents releases have been made.

Sources of error for gaseous effluents batch releases are:

(1) tank volumes (2) sampling (3) counting (4) calibration Sources of error for gaseous effluents - continuous releases are:

(1) fan flow rate (2) sampling (3) counting (4) calibration (5) differential pressure drop Sources of error for liquid effluents - batch releases are:

(1) tank volumes (2) sampling (3) counting (4) calibration Sources of error for liquid effluents - continuous releases are:

(1) dilution flow rate (2) sampling (3) counting (4) calibration These sources of error are independent, and thus, the total error is calculated according to the following formula:

T r2 2 2 2 Total Error O' Val ,+J2 +J 3 ... 0yi where: a* Error associated with each component.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION H. 10 CFR 50 APPENDIX I REQUIREMENTS Table 1 in Section H presents the quarterly and annual maximum dose to an individual. Six different categories are presented:

(1) Liquid Effluents - Whole Body (2) Liquid Effluents - Organ (3) Airborne Effluents - Tritium, Iodines and Particulates (4) Noble Gases - Gamma (5) Noble Gases - Beta (6) Direct Radiation The doses for categories 1 and 2 were calculated using the methodology of the ODCM; these data are also presented in Table 2D. Categories 3, 4, and 5 were calculated utilizing RETDAS (Radioactive Effluent Tracking and Dose Assessment Software), Regulatory Guide 1.109 methodology, and concurrent meteorology. Table 1E of gaseous effluents previously presented, however, lists data similar to categories 3, 4 and 5 using methods described in the ODCM and the historical meteorology (X/Q). Category 6 presents direct dose data measured by TLD dosimeters.

Each portion of each category is footnoted to briefly describe each maximum individual dose presented.

For members of the public, per the ODCM, who may at times be within the site boundary1 , the occupancy of the individual will be sufficiently low to compensate for any increase in the atmospheric diffusion factor above that for the site boundary. For members of the public who traverse the site boundary via highway 1-5, the residency time shall be considered negligible and hence the dose "0".

Table 2 in Section H presents the percent of Applicable Limits for each dose presented in Table 1.

1 ODCM Figures 1-2 & 2-2.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION TABLE 1 Dose * (millirems)

First Second Third Fourth SOURCE Quarter Quarter Quarter Quarter Year LIQUID EFFLUENTS 1) 2) 3) 4) 5)

Whole Body 5.52E-5 2.72E-4 3.90E-4 1.30E-3 2.02E-3

6) 7) 8) 9) 10)

Organ 9.50E-5 4.33E-4 4.75E-4 1.85E-3 2.85E-3 AIRBORNE EFFLUENTS 11) 12) 13) 14) 15)

Tritium, lodines, and 3.03E-3 3.20E-3 1.13E-3 2.27E-3 9.15E-3 Particulates NOBLE GASES ** 16) 17) 18) 19) 20)

Gamma 3.37E-2 1.44E-2 3.27E-3 1.41 E-2 6.55E-2

21) 22) 23) 24) 25)

Beta 2.24E-2 1.22E-2 8.82E-3 2.82E-2 7.17E-2

26) 27) 28) 29) 30)

DIRECT RADIATION 1.69E-1 1.69E-1 1.96E-1 1.66E-1 6.88E-1

The numbered footnotes below briefly explain how each maximum dose was calculated, including the organ and the predominant pathway(s).

- Noble gas doses due to airborne effluent are in units of mrad, reflecting the air dose.

1. This value was calculated using the methodology of the ODCM.

2. This value was calculated using the methodology of the ODCM.

3. This value was calculated using the methodology of the ODCM.

4. This value was calculated using the methodology of the ODCM.

5. This value was calculated using the methodology of the ODCM.

6. This value was calculated using the methodology of the ODCM; the GI-LLI received the maximum dose primarily by the saltwater fish pathway.

7. This value was calculated using the methodology of the ODCM; the GI-LLI received the maximum dose primarily by the saltwater fish pathway.

8. This value was calculated using the methodology of the ODCM; the GI-LLI received the maximum dose primarily by the saltwater fish pathway.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION

9. This value was calculated using the methodology of the ODCM; the GI-LLI received the maximum dose primarily by the saltwater fish pathway.

10. This value was calculated using the methodology of the ODCM; the GI-LLI received the maximum dose primarily by the saltwater fish pathway.

11. The maximum organ dose was to an adult's thyroid and was located in the NNE sector. This was calculated using the assumptions of USNRC Regulatory Guide 1.109.

12. The maximum organ dose was to an adult's thyroid and was located in the NNE sector This was calculated using the assumptions of USNRC Regulatory Guide 1.109.

13. The maximum organ dose was to a child's thyroid and was located in the WNW sector This was calculated using the assumptions of USNRC Regulatory Guide 1.109.

14. The maximum organ dose was to an adult's thyroid and was located in the NNE sector. This was calculated using the assumptions of USNRC Regulatory Guide 1.109.

15. The maximum organ dose was to an adult's thyroid and was located in the NNE sector This was calculated using the assumptions of USNRC Regulatory Guide 1.109.

16. The maximum air dose for gamma radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

17. The maximum air dose for gamma radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

18. The maximum air dose for gamma radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

19. The maximum air dose for gamma radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

20. The maximum air dose for gamma radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

21. The maximum air dose for beta radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

22. The maximum air dose for beta radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

23. The maximum air dose for beta radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

24. The maximum air dose for beta radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

25. The maximum air dose for beta radiation was located in the NNE sector, at the exclusion area boundary, and calculated using the assumptions of the USNRC Regulatory Guide 1.109.

26. Measurements were made using TLD dosimeters; values are presented as site wide dose and are prorated to 300 hours0.00347 days 0.0833 hours 4.960317e-4 weeks 1.1415e-4 months per year; highest dose was measured at the Site Boundary in the W sector.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION

27. Measurements were made using TLD dosimeters; values are presented as site wide dose and are prorated to 300 hours0.00347 days 0.0833 hours 4.960317e-4 weeks 1.1415e-4 months per year; highest dose was measured at the Site Boundary in the W sector.

28. Measurements were made using TLD dosimeters; values are presented as site wide dose and are prorated to 300 hours0.00347 days 0.0833 hours 4.960317e-4 weeks 1.1415e-4 months per year; highest dose was measured at the Site Boundary in the W sector.

29. Measurements were made using TLD dosimeters; values are presented as site wide dose and are prorated to 300 hours0.00347 days 0.0833 hours 4.960317e-4 weeks 1.1415e-4 months per year; highest dose was measured at the Site Boundary in the W sector.

30. Measurements were made using TLD dosimeters; values are presented as site wide dose and are prorated to 300 hours0.00347 days 0.0833 hours 4.960317e-4 weeks 1.1415e-4 months per year; highest dose was measured at the Site Boundary in the W sector.

TABLE 2 Percent Applicable Limit First Second Third Fourth SOURCE Quarter Quarter Quarter Quarter Year LIQUID EFFLUENTS Whole Body 1.84E-3 9.08E-3 1.30E-2 4.33E-2 3.36E-2 Organ 9.50E-4 4.33E-3 4.75E-3 1.85E-2 1.42E-2 AIRBORNE EFFLUENTS Tritium, lodines, and 2.02E-2 2.13E-2 7.55E-3 1.52E-2 3.05E-2 Particulates NOBLE GASES Gamma 3.37E-1 1.44E-1 3.27E-2 1.41 E-1 3.27E-1 Beta 1.12E-1 6.11E-2 4.41E-2 1.41E-1 1.79E-1 NOTE: Direct Radiation is not specifically addressed in the Applicable Limits.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION I. CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL None of the changes impact the accuracy or reliability of effluent dose or setpoint calculations. The level of radioactive effluent control required by 10CFR20, 40CFR190, 10CFR50.35a and Appendix I to 10CFR50 will be maintained.

Throughout the document, change bars are marked in one of four ways as follows:

A Addition D Deletion F Editorial/Format change R Revision Page # changes due to new revision Reason Title Pages Revised from previous revision to Rev 5 R Page # Reason 2-29 Revised U2&3 Controlling Location Factors R 2-30 Revised SYF Controlling Location Factors R 2-31 Revised NIA Controlling Location Factors R 5-18 Deleted Airborne Sample and Sampling Location 15 for Oceanside City Hall (Control) D 5-18 Deleted Note for replacing Airborne Sample and Sampling Control Location D 5-19 Deleted Local Crop location San Clemente Resident w/Garden D 5-27 Revised Figure 5 Deleted Airborne Sample and Sampling Location 15 for Oceanside R City Hall (Control)

Appendix A Changed Format to incorporate Ri report from Health Physics Engineering F Ai Format changed and revised References R A1-1 Format changed F A1-2 Format changed - former page Al-4 F A1-3 Format changed - former page A1-2 F A1-4 Format changed - former page A1-3 F A1-5 Added A A1-6 Added A A1-7 Format changed - former page Al-5 F A1-8 Format changed - former page Al-6 F A1-9 Format changed - former page A1-7 F Al-10 Format changed - former page A1-8 F Al-11 Format changed - former page A1-9 F Al-12 Format changed - former page Al-10, revised values per LUC R Al-13 Format changed - former page A1-11, revised values per LUC R ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION I. CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL (Continued)

A1-14 Added A A1-15 Format changed - former page A1-12, revised values per LUC R A1-16 Format changed - former page A1-14, revised values per LUC R Al-17 Format changed - former page A1-13 F Al-18 Added A A1-19 Format changed - former page A1-16, revised values per LUC R A1-20 Format changed - former page A1-15, revised values per LUC R A1-21 Added A Al-22 Added A A1-23 Added A A1-24 Added A A1-25 Format changed - former page A1-18 F A1-26 Format changed - former page A1-17, revised values per LUC R A1-27 Added A A1-28 Format changed - former page Al-19, revised values per LUC R A1-29 Added A A1-30 Format changed - former page A1-20 F Al-31 Format changed - former page A1-21, revised values per LUC R A1-32 Added A Al-33 Added A A1-34 Added A A1-35 Format changed - former page A1-22 F A1-36 Format changed - former page A1-23 F A1-37 Added A A1-38 Added A A1-39 Added A A1-40 Format changed - former page A1-25 F A1-41 Added A A1-42 Added A A1-43 Format changed - former page A1-26 F A2-1 Deleted Pathway Camp Homo Sewage Trmnt. D Added Pathway Surf Beach/Life Guard A A2-2 Added A ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION I. CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL (Continued)

A2-3 Deleted Pathway Sheep (Meat)/Shepherd D Added Pathway Cotton Point Estates A A2-4 Added A A2-5 Deleted Pathway Deer Consumer/Hunter D Added Pathway St Park Office Trlr A A2-6 Added A A2-7 Added A A2-8 Added A A2-9 Deleted Pathway Sheep (Meat)/Shepherd D Added Pathway San Mateo Pt Homes A A2-10 Deleted Pathway Deer Consumer/Hunter D Added Pathway Camp Mesa A A2-11 Added A A2-12 Added A A2-13 Added A A2-14 Added A A2-15 Added A A2-16 Added A A2-17 Added A A2-18 Added A A2-19 Added A A2-20 Format changed - former page A2-2, revised values per LUC A A2-21 Format changed - former page A2-4, revised values per LUC A A2-22 Format changed - former page A2-6, revised values per LUC A A2-23 Format changed - former page A2-7, revised values per LUC A A2-24 Added A A2-25 Format changed - former page A2-8, revised values per LUC A A2-26 Added A A3-1 Format changed F A3-2 Added A A3-3 Format changed - former page A3-2 F A3-4 Format changed - former page A3-3, revised values per LUC R A3-5 Added A ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION I. CHANGES TO THE OFFSITE DOSE CALCULATION MANUAL (Continued)

A3-6 Added A A3-7 Format changed - former page A3-4, revised values per LUC R A3-8 Format changed - former page A3-5, revised values per LUC R A3-9 Format changed - former page A3-6, revised values per LUC R A3-10 Format changed - former page A3-7 F A3-1 1 Format changed - former page A3-8, revised values per LUC R A3-12 Format changed - former page A3-9 F A3-13 Deleted Pathway Deer Consumer/Hunter D Format changed - former page A3-1 0, revised values per LUC R A3-14 Format changed - former page A3-111 F A3-15 Format changed - former page A3-12, revised values per LUC R A3-16 Deleted Pathway Deer Consumer/Hunter D Added Pathway Sewage Treat. Facility A A3-17 Added A A3-18 Format changed - former page A3-14, revised values per LUC R A3-19 Format changed - former page A3-15, revised values per LUC R A3-20 Format changed - former page A3-17, revised values per LUC R A3-21 Format changed - former page A3-18, revised values per LUC R A3-22 Format changed - former page A3-19, revised values per LUC R A3-23 Format changed - former page A3-20, revised values per LUC R A3-24 Added A A3-25 Added A A3-26 Format changed - former page A3-21, revised values per LUC R Appendix B Cover Revised to Revision 5 R The Land Use Census (LUC) for 2010 did not identify a new location with a higher calculated or committed dose than those calculated for the locations evaluated in the previous revision to the ODCM. Therefore, no new location(s) are reported per ODCM 5.2.1.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION J. CHANGES TO RADIOACTIVE WASTE TREATMENT SYSTEMS NONE.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION K. MISCELLANEOUS ABNORMAL RELEASES

Waste Gas Decay Tank Leak An unplanned monitored release of Waste Gas Decay Tank T-087 occurred on 2/9/2011 during maintenance on a Waste Gas Compressor discharge valve due to leak by on a red tagged closed boundary valve. Release permit 1G-058-0 was generated for the WGDT and the release was monitored by Plant Vent Stack instrumentation. Approximately 4.8E-1 curies of noble gas were released which resulted is a whole body dose of 3.93E-4 mrem to a member of the public. The curies released and associated dose are included in Table 1A and Table 1, respectively. This event is documented in NN 201325935.

Electrical Cable Vault Release On 03/31/11, an estimated 500 gallons of water containing 3.8E-6 microCi/ml of tritium was pumped from an electrical cable vault located inside the protected area to the outfall via the storm drain system. This unplanned, unmonitored release resulted in a conservatively estimated 7.3E-5 curies of tritium released and a whole body dose of 1.23E-1 1 mrem to a member of the public. This event is documented in NN 201398775 0 Leaking Unit 2 Steam Generator Blowdown Valves In August 2011, leakage of secondary water past the Unit 2 steam generator E-089 blowdown isolation valve to the outfall at 0.2 gpm was identified. In October 2011, Unit 2 Steam Generator E-088 was identified to be leaking past its blowdown isolation valve with a combined leakage to the outfall of 0.4 gpm. Compensatory sampling was performed all year (samples indicated no detectable gamma activity for 2011 with approximately 3E-6 microCi/ml of tritium). The curies released were accounted for in weekly release permits. This unplanned, unmonitored release resulted in 3.93E-4 curies of tritium released and a whole body dose of 6.54E-1 0 mrem to a member of the public. The curies and dose are included in Table 2A and Table 1, respectively. These events are documented in NN 201616240 and NN 201689124

Leaking Unit 3 Steam Generator Blowdown Valves In August 2011, Unit 3 Steam Generators were estimated to be leaking past their blowdown isolation valves to the outfall at 0.5 gpm. Compensatory sampling was performed all year (samples indicated no detectable gamma activity for 2011 with approximately 6E-6 microCi/ml of tritium). The curies released were accounted for in weekly release permits. This unplanned, unmonitored release resulted in 2.05E-3 curies of tritium released and a whole body dose of 3.47E-9 mrem to a member of the public. The curies and dose are included in Table 2A and Table 1, respectively. This event is documented in NN 201614180 and NN 201614181 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION K. MISCELLANEOUS (Continued)

PLANNED UNMONITORED RELEASES

Unit 3 Condenser Drain Down During Unit 3 Condenser drain down from 12/28/2010 to 1/10/2011, 1.4E-5 microCi/ml tritium was detected in the Unit 3 condensate on 1/3/2011 due to Unit 2 supplying auxiliary steam containing tritium for the Unit 3 gland seals. This resulted in a planned unmonitored release of radioactive material. An estimated 8.06E-2 Ci of tritium were released and are included in Table 2A. This resulted in a whole body dose of 1.55E-7 mrem to a member of the public and is included in Table 1.

This event is documented .in NN 201273125.

Unit 3 Condenser Drain Down Unit 3 Condenser drain down from 2/10/2011 to 2/18/2011, with approximately 3.9E-6 microCi/ml tritium activity, resulted in a planned unmonitored release of radioactive material. An estimated 8.11 E-2 Ci of tritium were released and are included in Table 2A. This resulted in a whole body dose of 1.78E-7 mrem to a member of the public and is included in Table 1. This event is documented in NN 201347981.

Unit 2 Condenser Drain Down Unit 2 Condenser drain down from 9/9/2011 to 9/11/2011, with approximately 5E-6 microCi/ml tritium activity, resulted in a planned unmonitored release of radioactive material. An estimated 8.21 E-3 Ci of tritium were released resulting is a whole body dose to a member of the public of 1.38E-8 mrem.

This event is documented in NN 201644408.

Unit 3 Condenser Drain Down Unit 3 Condenser drain down from 9/9/2011 to 9/12/2011, with approximately 5E-6 microCi/ml tritium activity, resulted in a planned unmonitored release of radioactive material. An estimated 9.02E-3 Ci of tritium were released resulting is a whole body dose to a member of the public of 1.51 E-8 mrem.

This event is documented in NN 201644434.

Unit 3 Steam Generator Replacement Outage Temporary Construction Opening Release From 10/13/2010 to 1/13/2011, an unmonitored release of airborne activity occurred during Unit 3 Steam Generator Replacement Outage as the result of the temporary construction openings required to support replacement of the steam generators. Sampling was performed at these construction openings and an estimation of the curies released and resultant dose was performed.

Releases totaled 5.3E-1 curies of which noble gases were 5.3E-1 curies, iodines were 7.12E-6 curies, particulates were 2.5E-4 curies and no tritium was detected. The projected dose was (a) gamma air dose: 2.88E-5 mrad at the site boundary, (b) beta air dose: 8.57E-5 mrad at the site boundary, (c) organ dose: 1.35E-5 mrem at the highest receptor. This event is documented in NN 201287642.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION K. MISCELLANEOUS (Continued)

EFFLUENT RADIATION MONITORS OUT OF SERVICE GREATER THAN 30 DAYS January 1,2011 - December 31, 2011 S.O.N.G.S. 2 Monitor Inoperability Period Inoperability Cause Explanation 2RT-7870, 04/17/2000 - present Inoperable process Design deficiency caused process flow Condenser flow measuring instrument to be inoperable while the vacuum Air Ejector device whenever pump is running, as high flow values are not Process vacuum pump is sensed. Flow monitor works properly during Flow running. normal operations. The monitor is isokinetic Monitor during vacuum pump operation due to the substitute flow value that is inserted whenever the vacuum pump is running. The issue was previously documented in ARs 000101252 and 000400960. It is currently being tracked in NN200001437.

2RT-6753, 9/18/11 - 3/3/12 Indication failed The monitor indication was found below scale.

Steam low The Victoreen monitors will be replaced with Generator new digital equipment as documented in NN E089 201651473. The monitor status was tracked by Blowdown LCOAR 2-2011-0329.

Monitor 2RT-7865, 11/6/11 - 2/19/12 Heat Trace During very cold and rainy periods, excessive Plant Vent temperature low heat loss results in low heat trace temperature.

Stack / Replacement of the heat tracing is being Containment tracked and documented in 2-LCOAR-201 1-Purge 0388 and NN 201720631.

Monitor ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION EFFLUENT RADIATION MONITORS OUT OF SERVICE GREATER THAN 30 DAYS (Continued)

January 1, 2011 - December 31, 2011 S.O.N.G.S. 3 Monitor Inoperability Period Inoperability Cause Explanation 3RT-7870, 04/17/2000 - present Inoperable process Design deficiency caused process flow Condenser flow measuring instrument to be inoperable while the vacuum Air Ejector device whenever pump is running, as high flow values are not Process vacuum pump is sensed. Flow monitor works properly during Flow running. normal operations. The monitor is isokinetic Monitor during the vacuum pump operation due to the substitute flow value that is inserted whenever the vacuum pump is running. The issue was previously documented in ARs 000101252 and 000400960. It is currently tracked in NN 200001437.

2/13/11 - 5/25/11 Process Flow Rate Following startup 2/13/11, Unit 3 experienced outside range high condenser air ejector flow due to excessive condenser air in-leakage. In-leakage was located and repaired 5/24/11. Required compensatory samples were collected during the inoperable period The flow rate monitor status was tracked by 3-LCOAR-2011-0046.

3RT-7870, 11/3/11 - 1/12/12 Failed heat trace Heat trace circuit 2TICJ407 was found failed Condenser high during routine panel checks. A degraded Air Ejector connector was replaced under NMO 800798851 Monitor and the heat trace restored on 1/12/12. The Heat deficiency was tracked by 3-LCOAR-201 1-Tracing 0367.

3RT-6759, 8/18/11 - 10/7/11 Failed Detector The monitor indication fails low intermittently.

Steam These monitors are obsolete and parts are Generator difficult to obtain Replacement of the Victoreen E088 monitors with new digital equipment is Blowdown documented in NN 201651473. The condition Monitor was tracked and documented in 3-EDMR-201 1-0117 and NN 201610643.

3RT-7821, 10/17/11 - 11/25/11 Temporary pumps The flow path was removed from service.

Turbine installed Temporary pumps transferred sump contents to Building Unit 2 Turbine Building Sump. The condition Sump was tracked by 3-LCOAR-2011-0342..

Monitor ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION EFFLUENT RADIATION MONITORS OUT OF SERVICE GREATER THAN 30 DAYS (Continued)

January 1,2011 - December 31, 2011 S.O.N.G.S. 2/3 Monitor Inoperability Period Inoperability Cause Explanation 2/3RT-7813, 5/10/11 - 7/28/11 Spurious Alarms Multiple spurious alarms over a two hour period Liquid due to a communication problem between the Radwaste local processing unit (LPU) and the remote Discharge display unit. The LPU was replaced. The Monitor spurious faults did not impact the ability of the radiation detection channel to satisfy the specified function. The condition was tracked and documented by 2-LCOAR-2011-0162 and 3-LCOAR-2011-0153.

2/3RT-7808, 5/9/11 - 1/12/12 Replacement The sample pumps were replaced by metal Plant Vent pumps trip on bellow pumps as part of equipment preventative Stack pressure pulsations maintenance. The replacement pumps Monitor produced pressure pulsations that caused the discharge pressure switch to trip the pumps.

The pressure switch was abandoned and the monitor was returned to service. The monitor status was tracked by 2-EDMR-2011-0063.

2/3RT-2101, 11/9/11 - 1/10/12 Pump P1060 does An inoperable sump pump prevented NIA Yard not start on High performance of the 18 month channel Drains Level calibration. The monitor was declared Sump inoperable when the calibration became Monitor overdue. Compensatory samples were collected and analyzed during the period of inoperability. The monitor status was tracked under 2-LCOAR-2011-0225.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION K. MISCELLANEOUS (Continued)

ONSITE GROUND WATER SAMPLES This section provides results of on-site samples of ground water in accordance with the voluntary Industry Ground Water Protection Initiative. The sample and the frequency of sampling may change over time.

January 1,2011 - December 31, 2011 Sample Date Location Tritium Activity, pCi/ml Gamma Activity, pCi/ml NIA-3 <LLD <LLD 1/8/11 NIA-4 <LLD <LLD NIA-6 4.57E-7 <LLD NIA-6 6.09E-7 <LLD NIA-8 1.31E-6 <LLD NIA-9 <LLD <LLD NIA-4 <LLD <LLD NIA-6 5.55E-7 <LLD NIA-7 <LLD <LLD NIA-8 1.01E-6 <LLD NIA-9 <LLD <LLD 1/17/11NIA- NIA-10 <LLD <LLD

<LLD <LLD NIA-3 <LLD <LLD NIA-4 <LLD <LLD NIA-5 1.81E-6 <LLD NIA-6 6.77E-7 <LLD NIA-7 5.79E-7 <LLD NIA-8 8.28E-7 <LLD NIA-9 <LLD <LLD 1/27/11NIA-7 NIA-7 <LLD <LLD

<LLD <LLD NIA-7 NIA-7 <LLD

<LLD <LLD

<LLD GW-OCA = Wells installed in the Owner Controlled Area to implement the Ground Water Protection Initiative.

GW-PA = Wells installed in the Protected Area to implement the Ground Water Protection Initiative.

GW-NIA = Wells installed in the North Industrial Area to implement the Ground Water Protection Initiative.

NIA = Temporary wells installed in the North Industrial Area for investigation of groundwater.

a priori LLD = H-3:3.OE-6 pCi/mI pCi/ml = indicated microcuries per milliliter ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION ONSITE GROUND WATER SAMPLES (Continued)

Sample Date Location Tritium Activity, pCi/ml Gamma Activity, pCi/ml NIA-7 <LLD <LLD 1/29/11 NIA-7 <LLD <LLD NIA-7 7.96E-7 <LLD NIA-7 <LLD <LLD 1/30/11 NIA-7 5.60E-7 <LLD NIA-7 <LLD <LLD NIA-7 5.49E-7 <LLD 1/31/11NIA-7 <LLD <LLD NIA-3 <LLD <LLD NIA-4 <LLD <LLD NIA-5 1.20E-6 <LLD NIA-6 <LLD <LLD 2/1/11 NIA-7 <LLD <LLD NIA-8 1.99E-6 <LLD NIA-9 <LLD <LLD NIA-10 <LLD <LLD NIA-11 <LLD <LLD GW-NIA-1 <LLD <LLD GW-NIA-2 7.90E-7 <LLD NIA-6 5.45E-7 <LLD 2/12/11 NIA-6 8.89E-7 <LLD GW-NIA-1 <LLD <LLD GW-NIA-2 <LLD <LLD GW-PA-1 <LLD <LLD 3/3/11 GW-PA-2 <LLD <LLD GW-PA-3 <LLD <LLD 3/4/11 PA-4 <LLD <LLD GW-OCA = Wells installed in the Owner Controlled Area to implement the Ground Water Protection Initiative.

GW-PA = Wells installed in the Protected Area to implement the Ground Water Protection Initiative.

GW-N IA = Wells installed in the North Industrial Area to implement the Ground Water Protection Initiative.

NIA = Temporary wells installed in the North Industrial Area for investigation of groundwater.

a prioriLLD = H-3: 3.OE-6 pCi/ml PCi/mi = indicated microcuries per milliliter ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION ONSITE GROUND WATER SAMPLES (Continued)

Sample Date Location Tritium Activity, pCi/mI Gamma Activity, pCi/mi 3/13/11 NIA-6 3.33E-6 <LLD NIA-6 3.72E-6 <LLD NIA-6 3.83E-6 <LLD NIA-6 3.69E-6 <LLD NIA-6 3.72E-6 <LLD NIA-6 3.57E-6 <LLD NIA-6 3.31 E-6 <LLD 3/24/11 NIA-6 6.89E-7 <LLD GW-OCA-2 <LLD <LLD 3/30/11GW-OCA-3 <LLD <LLD GW-NIA-1 <LLD <LLD 3/31/11 GW-NIA-2 <LLD <LLD GW-OCA-1 <LLD <LLD NIA-3 <LLD <LLD 4/2/11 NIA-4 <LLD <LLD NIA-5 5.19E-7 <LLD NIA-6 3.53E-6 <LLD NIA-6 3.54E-6 <LLD NIA-6 2.52E-6 <LLD NIA-6 2.81 E-6 <LLD NIA-6 2.26E-6 <LLD NIA-6 3.63E-6 <LLD NIA-7 2.12E-6 <LLD NIA-5 5.82E-7 <LLD NIA-6 2.24E-6 <LLD GW-NIA-1 <LLD <LLD GW-NIA-2 7.98E-7 <LLD 6/17/11 GW-OCA-2 <LLD <LLD NIA-3 <LLD <LLD NIA-4 <LLD <LLD 6/18/11 GW-NIA-7 1.37E-6 <LLD NIA-10 <LLD <LLD NIA-11 <LLD <LLD 6/20/11 GW-OCA-1 <LLD <LLD GW-OCA = Wells installed in the Owner Controlled Area to implement the Ground Water Protection Initiative.

GW-PA = Wells installed inthe Protected Area to implement the Ground Water Protection Initiative.

GW-NIA = Wells installed in the North Industrial Area to implement the Ground Water Protection Initiative.

NIA = Temporary wells installed in the North Industrial Area for investigation of groundwater.

a prion LLD = H-3:3.OE-6 pCi/ml pCi/ml = indicated microcuries per milliliter ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION ONSITE GROUND WATER SAMPLES (Continued)

Sample Date Location Tritium Activity, pCi/ml Gamma Activity, pCi/ml 6/23/11 GW-OCA-3 <LLD <LLD GW-PA-1 <LLD <LLD GW-PA-2 GW-PA-3 <LLD <LLD

<LLD <LLD GW-PA-4 8.38E-7 <LLD 7/16/11 NIA-8 7.29E-7 <LLD NIA-9 <LLD <LLD GW-NIA-1 <LLD <LLD GW-NIA-2 1.39E-6 <LLD 8/11/11 GW-PA-4 6.87E-7 <LLD NIA-6 1.52E-6 <LLD 8/13/11NIA-7 <LLD <LLD NIA-3 <LLD <LLD 8/20/11 NIA-4 <LLD <LLD NIA-5 1.05E-6 <LLD 9/19/11 GW-OCA-1 <LLD <LLD 9/21/11 GW-OCA-3 <LLD <LLD GW-PA-1 <LLD <LLD GW-PA-2 <LLD <LLD GW-PA-3 <LLD <LLD GW-PA-4 8.68E-7 <LLD NIA-5 1.07E-6 <LLD 9/24/11 NIA-6 1.98E-6 <LLD NIA-10 <LLD <LLD NIA-11 <LLD <LLD 9/26/11 GW-OCA-2 <LLD <LLD 10/31/11 GW-PA-4 5.64E-7 <LLD 12/9/11 GW-PA-4 <LLD <LLD GW-PA-2 GW-PA-3 <LLD <LLD

<LLD <LLD GW-OCA = Wells installed in the Owner Controlled Area to implement the Ground Water Protection Initiative.

GW-PA = Wells installed in the Protected Area to implement the Ground Water Protection Initiative.

GW-NIA = Wells installed in the North Industrial Area to implement the Ground Water Protection Initiative.

NIA = Temporary wells installed in the North Industrial Area for investigation of groundwater.

a prioriLLD = H-3: 3.OE-6 pCi/ml pCi/ml = indicated microcuries per milliliter ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION ONSITE GROUND WATER SAMPLES (Continued)

Sample Date Location Tritium Activity, pCi/ml Gamma Activity, pCi/ml 12/16/11 GW-PA-1 <LLD <LLD NIA-6 1.70E-6 <LLD GW-NIA-1 <LLD <LLD GW-NIA-2 7.25E-7 <LLD 12/22/11 GW-OCA-3 <LLD <LLD GW-OCA-1 <LLD <LLD GW-OCA-2 <LLD <LLD NIA-14 <LLD <LLD 12/24/11 NIA-15 <LLD <LLD NIA-15 <LLD <LLD GW-OCA = Wells installed in the Owner Controlled Area to implement the Ground Water Protection Initiative.

GW-PA = Wells installed in the Protected Area to implement the Ground Water Protection Initiative.

GW-NIA = Wells installed in the North Industrial Area to implement the Ground Water Protection Initiative.

NIA = Temporary wells installed in the North Industrial Area for investigation of groundwater.

a priori LLD = H-3: 3.0E-6 pCi/ml pCi/mI = indicated microcuries per milliliter ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION K. MISCELLANEOUS (Continued) 40 CFR 190 REQUIREMENTS Table 1 below presents the annual site-wide doses and percent of ODCM Specification limits to members of the public. These values were calculated utilizing doses resulting from all effluent pathways and direct radiation. The different categories presented are: (1) Total Body, (2) Limiting Organ, and (3) Thyroid.

Dose Category Units Year

1. Total Body

a. Total Body Dose mrem 1.25E+0

b. Percent ODCM Specification Limit % 5.01E+0

2. Limiting Organ

a. Organ Dose (GI-LLI) mrem 1.20E-2

b. Percent ODCM Specification Limit % 4.80E-2

3. Thyroid

a. Thyroid Dose mrem 1.11E-2

b. Percent ODCM Specification Limit % 1.49E-2 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION K. MISCELLANEOUS (Continued)

CARBON-14 In June, 2009, the NRC revised its guidance in Regulatory Guide (RG) 1.21, "Measuring, Evaluating and Reporting Radioactivity In Solid Wastes And Releases Of Radioactive Materials In Liquid And Gaseous Effluents From Light-Water-Cooled Nuclear Power Plants", Revision 2. RG 1.21 explains, in part, the quantity of carbon 14 (C-14) discharged can be estimated by sample measurements or by use of a normalized C-14 source term and scaling factors based on power generation, or estimated by use of the GALE code from NUREG-0017. The dose contribution of C-14 from liquid radioactive waste is much less than that contributed by gaseous radioactive waste, evaluation of C-14 in liquid radioactive waste is not required.

" If sampling is performed, the sampling frequency may be adjusted to that interval that allows adequate measurement and reporting of effluents.

" If estimating C-14 based on scaling factors and fission rates, a precise and detailed evaluation of C-14 is not necessary. It is not necessary to calculate uncertainties for C-14 or to include C-14 uncertainty in any subsequent calculation of overall uncertainty.

Electric Power -Research Institute (EPRI) Technical Report 1021106, "Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents," to estimate the production and release quantities of C-14.

C-14 calculated production, discharge parameters and resulting dose are reported here, separately from tables 1, 1A, 1C, 1E, 2 and 40CFR190 table 1.

Calculated C-14 production , Ci/EFPY(l) U2 = 15.7

' U3 = 15.4 2011 Unit capacity factors U2 = 0.98 U3 = 0.84 Fraction release of produced C-14 to atmosphere 0.98 Fraction of C-14 chemical form assumed Organic = 0.80 Inorganic = 0.20 U2 U3 == 15.4 12.9 Curies C-14 released to atmosphere Critical receptor dose(2) [Child (bone)], mrem 2.15E-1 (1) Effective Full Power Year (2) Due to ingestion of meat (deer) grazing in the NNE sector ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 SAN ONOFRE NUCLEAR GENERATING STATION SECTION L. S.O.N.G.S. CONCLUSIONS

Gaseous releases totaled 2.12E+2 curies of which noble gases were 1.03E+2 curies, iodines were 1.53E-3 curies, particulates were 2.42E-4 curies and tritium was 8.07E+1 curies.

The radiation doses from gaseous releases were: (a) gamma air dose: 6.55E-2 mrad at the site boundary, (b) beta air dose: 7.17E-2 mrad at the site boundary, (c) organ dose: 9.15E-3 mrem at the highest receptor.

Airborne carbon-14 release totaled 2.82E+1 curies.

The radiation dose from carbon-14 was an organ dose of 2.15E-1 mrem at the highest receptor.

The dose decreased slightly from 2010 (7.77E-1 mrem) due to removal of a garden near the site boundary from the 2011 Land Use Census.

" Liquid releases totaled 1.16+3 curies of which particulates and iodines were 9.55E-3 curies, tritium was 1.1 6E+3 curies, and noble gases were 1.03E+0 curies.

The radiation doses from liquid releases were: (a) total body: 2.02E-3 mrem, (b) limiting organ:

2.85E-3 mrem.

The radioactive releases and resulting doses generated from Units 2 and 3 were below the Applicable Limits for both gaseous and liquid effluents.

" SONGS 2 and 3 made 115 radwaste shipments to EnergySolutions, UT and EnergySolutions Duratek, TN. The total volume of the 115 shipments was 1.54E+3 cubic meters containing 4.86E+2 curies of radioactivity. There were no radwaste shipments from Unit 1.

Meteorological conditions during the year were typical for SONGS. Meteorological dispersion was good 37% of the time, fair 37% of the time and poor 27% of the time.

The results of samples taken from on-site ground water wells in support of the Industry Ground Water Protection Initiative are reported in Section K. An investigation is being performed in the area formerly occupied by Unit 1 to characterize low, but detectable levels of tritium that are well below all regulatory limits (Notification 201053677). An investigation is being performed in the Unit 2/3 protected area to characterize low, but detectable levels of tritium that are well below all regulatory limits (Notification 201594817). Ground water beneath SONGS is not a source of drinking water.

The net result from the analysis of these effluent releases indicates that the operation of SONGS has met all the requirements of the applicable regulations that ensure adequate protection of the health of members of the public.

METEOROLOGY METEOROLOGY The meteorology of the San Onofre Nuclear Generating Station for each of the four quarters, 2011 is described in this section. Meteorological measurements have been made according to the guidance provided in USNRC Regulatory Guide 1.23, "Onsite Meteorological Programs." A summary report of the meteorological measurements taken during each calendar quarter are presented in Table 4A as joint frequency distribution (JFD) of wind direction and wind speed by atmospheric stability class.

Hourly meteorological data for batch releases have been recorded for the periods of actual release.

These data are available, as well as the hourly data for the Annual Report, but have not been included in this report because of the bulk of data records.

Table 4A lists the joint frequency distribution for each quarter, 2011. Each page of Table 4A represents the data for the individual stability classes: A, B, C, D, E, F, and G. The last page of each section is the JFD for all the stability classes. The wind speeds have been measured at the 10 meter level, and the stability classes are defined by the temperature differential between the 10 meter and 40 meter levels.

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY January - March Table 4A SITE: SAN ONOFRE PERIOD OF RECORD 11010100-11033123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL A EXTREMELY UNSTABLE (DT/DZ -1.9 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 1 0 0 0 0 0 0 1 NNE 0 0 0 0 1 0 0 0 0 0 0 0 NE 0 0 0 0 0 1 0 1 0 0 0 0 2 ENE 0 0 0 0 1 0 1 0 0 0 0 0 2 E 0 0 0 0 1 0 0 0 0 0 0 0 1 ESE 0 0 0 1 2 0 0 0 0 0 0 0 3 SE 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 1 1 0 4 4 3 0 0 0 0 13 S 0 0 0 1 1 18 25 2 0 0 0 0 47 SSW 0 0 0 3 11 19 20 0 0 0 0 0 53 SW 0 0 0 2 13 16 10 1 0 0 0 0 42 WSW 0 0 0 5 9 38 37 2 0 0 0 0 91 W 0 0 0 0 7 41 47 3 0 0 0 0 98 WNW 0 0 0 0 2 17 50 2 0 0 0 0 71 NW 0 0 0 0 0 2 5 0 0 0 0 0 7 NNW 0 0 1 0 0 0 0 0 0 0 TOTALS 0 0 1 14 48 157 199 14 0 0 0 0 433 NUMBER OF VALID HOURS 433 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 433 PASQUILL B MODERATELY UNSTABLE (-1.9 < DT/DZ -1.7 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 1 0 0 0 0 0 1 ENE 0 0 0 0 0 0 1 0 0 0 0 0 1 E 0 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 1 1 0 0 0 0 2 SSE 0 0 0 0 0 2 2 2 0 0 0 0 6 S 0 0 0 0 0 4 1 1 0 0 0 0 6 SSW 0 0 0 0 2 3 2 1 0 0 0 0 8 SW 0 0 0 0 0 2 3 0 0 0 0 0 5 WSW 0 0 0 1 3 0 0 0 0 0 0 0 4 W 0 0 0 0 0 2 2 0 0 0 0 0 4 WNW 0 0 0 0 0 1 2 0 0 0 0 0 3 NW 0 0 0 0 1 0 3 0 0 0 0 0 4 NNW 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 0 0 1 6 14 18 5 0 0 0 0 44 NUMBER OF VALID HOURS 44 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 44 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY January - March Table 4A SITE: SAN ONOFRE PERIOD OF RECORD 11010100-11033123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL C SLIGHTLY UNSTABLE (-1.7 < DT/DZ. -1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 2 0 0 0 0 0 0 2 NNE 0 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 1 0 0 0 0 0 1 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 1 0 0 0 0 1 SSE 0 0 0 0 0 0 3 2 0 0 0 0 5 S 0 0 0 0 1 2 0 1 0 0 0 0 4 SSW 0 0 0 0 1 1 1 1 0 1 1 0 6 SW 0 0 0 2 1 1 3 1 0 0 0 0 8 WSW 0 0 0 0 2 0 0 0 0 0 0 0 2 W 0 0 0 0 2 3 0 1 0 0 0 0 6 WNW 0 0 0 0 2 2 1 0 0 0 0 0 5 NW 0 0 0 0 1 1 2 0 0 0 0 0 4 NNW 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 0 0 2 10 12 11 7 0 1 1 0 44 NUMBER OF VALID HOURS 44 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 44 PASQUILL D NEUTRAL (-1.5 < DT/DZ. -0.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 2 4 3 3 0 0 0 0 0 12 NNE 0 0 1 1 4 7 5 4 0 0 0 0 22 NE 0 0 0 1 2 0 1 0 0 0 0 0 4 ENE 0 0 0 1 0 2 0 0 0 0 0 0 3 E 0 0 0 0 1 2 1 1 0 0 0 0 5 ESE 0 0 0 2 2 3 8 0 0 0 0 0 15 SE 0 0 0 0 3 7 31 25 5 2 0 0 73 SSE 0 0 0. 1 6 13 16 13 3. 1 6 0 59 S 0 0 1 4 1 6 1 2 5 2 2 0 24 SSW 0 0 1 3 2 6 1 1 3 0 2 0 19 SW 0 0 0 5 4 1 6 5 1 0 0 0 22 WSW 0 0 0 3 2 4 6 7 0 1 0 0 23 W 0 0 2 1 3 11 9 9 2 0 0 0 37 WNW 0 0 0 1 1 10 12 5 0 0 0 0 29 NW 0 0 2 4 2 15 11 4 0 0 0 0 38 NNW 0 0 0 2 7 8 1 0 0 0 0 0 18 TOTALS 0 0 7 31 44 98 112 76 19 6 10 0 403 NUMBER OF VALID HOURS 403 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 403 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY January - March Table 4A SITE: SAN ONOFRE PERIOD OF RECORD 11010100-11033123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL E SLIGHTLY STABLE (-0.5 < DT/DZ. 1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 6 9 8 0 0 23 0 0 0 0 NNE 0 0 0 7 15 16 18 0 0 0 0 0 56 NE 0 0 1 3 4 3 2 3 3 0 0 0 19 ENE 0 0 1 3 2 4 3 2 0 0 0 0 15 E 0 0 0 1 4 12 2 0 0 0 0 0 19 ESE 0 0 0 1 5 10 3 0 0 0 0 0 19 SE 0 0 0 1 2 3 2 0 0 0 0 0 8 SSE 0 0 0 1 5 5 3 0 0 0 1 0 15 S 0 0 0 1 3 0 1 0 1 0 0 0 6 SSW 0 0 0 0 1 2 0 0 0 0 0 0 3 SW 0 0 0 4 2 2 0 0 0 0 0 0 8 WSW 0 0 0 4 1 0 3 0 0 0 0 9 W 0 0 0 1 7 6 3 0 0 0 0 18 WNW 0 0 0 4 2 11 5 3 0 0 0 0 25 NW 0 0 1 2 3 5 9 1 0 0 0 0 21 NNW 0 0 7 1 4 4 0 0 16 TOTALS 0 0 3 46 66 91 58 11 4 0 1 0 280 NUMBER OF VALID HOURS 280 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 280 PASQUILL F MODERATELY STABLE (1.5 < DT/DZ. 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 7 11 5 0 0 0 0 0 0 23 NNE 0 1 0 13 46 51 14 0 0 0 0 0 125 NE 0 0 0 12 19 10 4 7 0 0 0 0 52 ENE 0 0 1 3 7 7 1 3 0 0 0 0 22 E 0 0 2 4 2 6 0 0 0 0 0 0 14 ESE 0 0 0 2 2 2 0 0 0 0 0 0 6 SE 0 0 1 0 2 0 0 0 0 0 0 0 3 SSE 0 0 0 4 0 1 0 0 0 0 0 0 5 S 0 0 2 4 3 1 0 0 0. 0 0 0 10 SSW 0 1 0 4 3 2 1 0 0 0 0 0 11 SW 0 0 1 3 2 0 0 0 0 0 0 0 6 WSW 0 1 0 4 1 2 0 0 0 0 0 0 8 W 0 0 0 1 2 3 0 0 0 0 0 0 6 WNW 0 1 0 1 5 11 3 0 0 0 0 0 21 NW 0 0 2 4 3 7 2 0 0 0 0 0 18 NNW 0 0 0 2 3 2 2 0 0 0 0 0 9 TOTALS 0 4 9 68 111 110 27 10 0 0 0 0 339 NUMBER OF VALID HOURS *339 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 339 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY January - March Table 4A SITE: SAN ONOFRE PERIOD OF RECORD 11010100-11033123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL G EXTREMELY STABLE (DT/DZ > 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 2 3 9 11 0 0 0 0 0 25 NNE 0 0 0 5 16 165 201 11 0 0 0 0 398 NE 0 0 0 4 11 36 23 5 0 0 0 0 79 ENE 0 0 1 3 7 7 3 0 0 0 0 0 21 E 0 0 1 6 4 1 2 0 0 0 0 0 14 ESE 0 0 1 1 4 1 0 0 0 0 0 0 7 SE 0 0 0 1 3 1 0 0 0 0 0 0 5 SSE 0 0 0 2 1 1 0 0 0 0 0 0 4 S 0 0 0 1 3 1 0 0 0 0 0 0 5 SSW 0 0 0 1 2 0 1 0 0 0 0 0 4 SW 0 0 2 0 1 0 1 0 0 0 0 0 4 WSW 0 0 0 3 1 0 0 0 0 0 0 0 4 W 0 0 0 3 3 0 0 0 0 0 0 0 6 WNW 0 0 0 3 4 6 4 0 0 0 0 0 17 NW 0 0 1 1 5 3 3 0 0 0 0 0 13 NNW 0 0 1 0 5 2 0 0 0 0 0 11 TOTALS 0 0 7 39 68 236 251 16 0 0 0 0 617 NUMBER OF VALID HOURS 617 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 617 ALL STABILITY CLASSES, ALL DT/DZ WIND SPEED (M/S) AT 10 METER LEVEL WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 17 27 28 14 0 0 0 0 0 86 NNE 0 1 1 26 82 239 238 15 0 0 0 0 602 NE 0 0 1 20 36 50 31 16 3 0 0 0 157 ENE 0 0 3 10 17 20 9 5 0 0 0 0 64 E 0 0 3 11 12 21 6 1 0 0 0 0 54 ESE 0 0 1 7 15 16 11 0 0 0 0 0 50 SE 0 0 1 2 10 11 34 27 5 2 0 0 92 SSE 0 0 1 9 12 26 28 20 3 1 7 0 107 S 0 0 3 11 12 32 28 6 6 2 2 0 102 SSW 0 1 1 11 22 33 26 3 3 1 3 0 104 SW 0 0 3 16 23 22 23 7 1 0 0 0 95 WSW 0 1 0 20 19 44 46 10 0 1 0 0 141 W 0 0 2 6 24 66 61 14 2 0 0 0 175 WNW 0 1 0 9 16 58 77 10 0 0 0 0 171 NW 0 0 6 11 15 33 35 5 0 0 0 0 105 NNW 0 0 1 15 11 19 9 0 0 0 0 0 55 TOTALS 0 4 27 201 353 718 676 139 23 7 12 0 2160 NUMBER OF VALID HOURS 2160 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 2160 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY April - June TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11040100-11063023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL A EXTREMELY UNSTABLE (DT/DZ. -1.9 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0, 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 2 1 0 0 0 0 0 3 ENE 0 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 1 0 0 0 0 0 0 1 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 1 0 0 0 0 0 0 1 SSE 0 0 0 0 0 0 4 0 0 0 0 0 4 S 0 0 0 0 1 9 33 18 0 0 0 0 61 SSW 0 0 0 0 2 18 70 9 0 0 0 0 99 SW 0 0 0 2 7 31 50 2 0 0 0 0 92 WSW 0 0 0 1 4 59 75 4 1 0 0 0 144 W 0 0 0 0 1 35 126 10 0 0 0 0 172 WNW 0 0 0 0 1 19 78 24 1 0 0 0 123 NW 0 0 0 0 0 0 9 6 1 0 0 0 16 NNW 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 0 0 3 16 175 446 73 3 0 0 0 716 NUMBER OF VALID HOURS 716 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 716 PASQUILL B MODERATELY UNSTABLE (-1.9 < DT/DZ. -1.7 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 0 0 0 0 0 0 0 0 NNE 0 0 0 0 0 0 0 0 0 0 0 0 0 NE 0 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 1 0 0 0 0 0 1 E 0 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 1 3 0 1 0 0 0 5 S 0 0 0 0 0 2 8 1 0 0 0 0 11 SSW 0 0 0 0 2 4 3 2 0 0 0 0 11 SW 0 0 0 0 5 4 16 2 0 0 0 0 27 WSW 0 0 0 0 3 5 1 0 0 0 0 0 9 W 0 0 0 0 2 7 1 3 0 0 0 0 13 WNW 0 0 0 0 0 2 3 0 0 0 0 0 5 NW 0 0 0 0 2 1 3 2 0 0 0 0 8 NNW 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 0 0 0 0 14 26 39 10 1 0 0 0 90 NUMBER OF VALID HOURS 90 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 90 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY April - June TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11040100-11063023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL C SLIGHTLY UNSTABLE (-1.7 < DT/DZ. 1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 1 0 0 0 0 0 0 0 1 NNE 0 0 0 0 0 1 1 1 0 0 0 0 3 NE 0 0 0 1 0 0 0 0 0 1 0 0 0 ENE 0 0 0 0 0 1 0 0 0 0 0 0 1 E 0 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 1 1 5 3 0 0 0 0 10 S 0 0 0 1 2 2 8 0 0 0 0 0 13 SSW 0 0 0 0 0 3 7 1 0 0 0 0 11 SW 0 0 0 0 7 6 7 2 0 0 0 0 22 WSW 0 0 0 1 1 5 3 1 0 0 0 0 11 W 0 0 0 0 1 2 0 2 0 0 0 0 5 WNW 0 0 0 1 1 3 1 0 0 0 0 0 6 NW 0 0 0 1 3 5 5 1 0 0 0 0 15 NNW 0 0 0 1 0 0 0 0 0 0 TOTALS 0 0 0 4 17 31 37 11 0 0 0 0 100 NUMBER OF VALID HOURS 100 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 100 PASQUILL D NEUTRAL (-1.5 < DT/DZ. -0.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0. 18.0 N 0 0 0 6 7 3 0 0 0 0 0 0 16 NNE 0 0 0 5 11 10 8 0 0 0 0 0 34 NE 0 0 0 2 1 4 2 0 0 0 0 0 9 ENE 0 0 3 2 0 2 0 0 0 0 0 0 7 E 0 0 0 3 3 3 3 0 0 0 0 0 12 ESE 0 0 0 4 5 8 7 0 0 0 0 0 24 SE 0 0 0 5 7 23 56 7 2 0 0 0 100 SSE 0 0 0 3 14 37 64 26 3 0 0 0 147 S 0 0 0 4 15 34 46 3 0 0 0 0 102 SSW 0 0 1 11 21 27 27 3 2 0 0 0 92 SW 0 0 1 10 18 19 16 3 0 0 0 0 67 WSW 0 1 2 9 9 12 16 2 0 0 0 0 51 W 0 0 0 4 6 5 7 13 2 0 0 0 37 WNW 0 0 0 5 3 4 4 4 1 0 0 0 21 NW 0 0 1 6 6 12 9 6 1 0 0 0 41 NNW 0 0 1 6 4 9 7 0 0 0 0 0 27 TOTALS 0 1 9 85 130 212 272 67 11 0 0 0 787 NUMBER OF VALID HOURS 787 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 787 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY April - June TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11040100-11063023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL E SLIGHTLY STABLE ( -0.5 < DT/DZ. 1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 1 1 6 5 1 0 0 0 0 0 14 NNE 0 0 0 8 13 13 3 1 0 0 0 0 38 NE 0 0 0 4 2 0 1 0 0 0 0 0 7 ENE 0 0 1 2 6 2 1 0 0 0 0 0 12 E 0 0 1 4 0 2 1 0 0 0 0 0 8 ESE 0 0 0 0 2 6 1 0 0 0 0 0 9 SE 0 0 0 1 1 1 10 0 0 0 0 0 13 SSE 0 0 0 0 0 1 2 0 0 0 0 0 3 S 0 0 1 1 0 2 0 0 0 0 0 0 4 SSW 0 0 0 1 1 0 1 0 0 0 0 3 0

SW 0 0 0 1 0 0 0 0 0 0 0 0 1 WSW 0 0 0 0 1 2 0 0 0 0 0 0 3 W 0 1 2 2 3 0 0 0 0 0 0 0 8 WNW 0 0 0 2 2 3 2 0 0 0 0 0 9 NW 0 0 0 0 1 1 3 1 0 0 0 0 6 NNW 0 0 0 1 1 3 3 0 0 0 0 0 8 TOTALS 0 1 6 28 39 41 29 2 0 0 0 0 146 NUMBER OF VALID HOURS 146 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 146 PASQUILL F MODERATELY STABLE (1.5 < DT/DZ. 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 3 2 2 0 0 0 0 0 7 NNE 0 0 1 6 27 36 3 0 0 0 0 0 73 NE 0 0 0 6 7 3 1 0 0 0 0 0 17 ENE 0 0 0 2 1 4 0 0 0 0 0 0 7 E 0 0 0 2 0 2 0 0 0 0 0 0 4 ESE 0 0 0 1 0 0 0 0 0 0 0 0 1 SE 0 0 0 2 0 2 0 0 0 0 0 0 4 SSE 0 0 1 0 0 0 0 0 0 0 0 0 1 S 0 0 0 1 1 0 0 0 0 0 0 0 2 SSW 0 0 0 2 0 1 0 0 0 0 0 0 3 SW 0 0 0 2 0 0 0 0 0 0 0 0 2 WSW 0 0 0 1 3 1 0 0 0 0 0 0 5 W 0 0 0 0 3 2 2 0 0 0 0 0 7 WNW 0 0 0 1 1 4 2 0 0 0 0 0 8 NW 0 0 0 3 2 1 2 0 0 0 0 0 8 NNW 0 0 1 1 0 0 0 0 0 0 0 0 2 TOTALS 0 0 3 30 48 58 12 0 0 0 0 0 151 NUMBER OF VALID HOURS 151 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 151 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY April - June TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11040100-11063023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL G EXTREMELY STABLE (DT/DZ > 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 2 0 1 0 0 0 0 0 3 NNE 0 0 0 0 3 87 56 0 0 0 0 0 146 NE 0 0 0 2 2 9 3 1 0 0 0 0 17 ENE 0 0 1 0 0 0 1 0 0 0 0 0 2 E 0 0 0 1 0 2 1 0 0 0 0 0 4 ESE 0 0 0 1 0 0 1 0 0 0 0 0 2 SE 0 0 0 0 0 0 2 0 0 0 0 0 2 SSE 0 0 0 0 0 0 0 0 0 0 0 0 0 S 0 0 0 1 0 0 0 0 0 0 0 0 1 SSW 0 0 0 2 0 0 0 0 0 0 0 0 2 SW 0 0 0 0 0 0 0 0 0 0 0 0 0 WSW 0 0 0 0 0 1 1 0 0 0 0 0 2 W 0 0 0 0 1 0 0 0 0 0 0 0 1 WNW 0 0 0 1 0 2 1 0 0 0 0 0 4 NW 0 0 0 0 0 2 0 0 0 0 0 0 2 NNW 0 0 1 1 1 1 2 0 0 0 0 0 6 TOTALS 0 0 2 9 9 104 69 1 0 0 0 0 194 NUMBER OF VALID HOURS 194 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 194 ALL STABILITY CLASSES, ALL DT/DZ WIND SPEED (M/S) AT 10 METER LEVEL WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 1 7 19 10 4 0 0 0 0 0 41 NNE 0 0 1 19 54 147 71 2 0 0 0 0 294 NE 0 0 0 14 12 19 8 1 0 0 0 0 54 ENE 0 0 5 6 7 9 3 0 0 0 0 0 30 E 0 0 1 10 3 10 5 0 0 0 0 0 29 ESE 0 0 0 6 7 14 9 0 0 0 0 0 36 SE 0 0 0 8 8 27 68 7 2 0 0 0 120 SSE 0 0 1 3 15 40 78 29 4 0 0 0 170 S 0 0 1 8 19 49 95 22 0 0 0 0 194 SSW 0 0 1 16 26 53 108 15 2 0 0 0 221 SW 0 0 1 15 37 60 89 9 0 0 0 0 211 WSW 0 1 2 12 21 85 96 7 1 0 0 0 225 W 0 1 2 6 17 51 136 28 2 0 0 0 243 WNW 0 0 0 10 8 37 91 28 2 0 0 0 176 NW 0 0 1 10 14 22 31 16 2 0 0 0 96 NNW 0 0 3 9 6 14 12 0 0 0 0 0 44 TOTALS 0 2 20 159 273 647 904 164 15 0 0 0 2184 NUMBER OF VALID HOURS 2184 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 2184 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY July - September TABLE4A SITE: SAN ONOFRE PERIOD OF RECORD 11070100-11093023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL A EXTREMELY UNSTABLE (DT/DZ. -1.9 C/100 METERS)

WIND .22. .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 0 1 0 0 0 0 0 1 NNE 0 0 0 0 3 2 5 0 0 0 0 0 10 NE 0 0 0 0 2 0 0 0 0 0 0 0 2 ENE 0 0 0 1 0 0 0 0 0 0 0 0 1 E 0 0 0 1 0 1 0 0 0 0 0 0 2 ESE 0 0 0 0 0 0 0 0 0 0 0 0 0 SE 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 0 9 1 1 0 0 0 0 11 S 0 1 0 0 0 13 19 7 0 0 0 0 40 SSW 0 0 0 1 7 24 26 0 0 0 0 0 58 SW 0 0 0 2 9 47 31 0 0 0 0 0 89 WSW 0 0 0 2 9 84 55 2 0 0 0 0 152 W 0 0 0 3 9 91 108 1 0 0 0 0 212 WNW 0 0 0 3 10 45 115 6 0 0 0 0 179 NW 0 0 0 2 2 12 13 2 0 0 0 0 31 NNW 0 0 0 0 2 1 0 0 0 0 0 0 3 TOTALS 0 1 0 15 53 329 374 19 0 0 0 0 791 NUMBER OF VALID HOURS 791 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 791 PASQUILL B MODERATELY UNSTABLE (-1.9 < DT/DZ. -1.7 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 3 2 2 0 0 0 0 0 0 7 NNE 0 0 0 4 5 1 0 0 0 0 0 0 10 NE 0 0 0 0 1 0 1 0 0 0 0 0 2 ENE 0 0 0 1 1 0 0 0 0 0 0 0 2 E 0 0 0 0 0 1 0 0 0 0 0 0 1 ESE 0 0 1 3 1 1 0 0 0 0 0 0 6 SE 0 0 0 2 1 1 2 0 0 0 0 0 6 SSE 0 0 0 0 0 2 5 3 2 0 0 0 12 S 0 1 0 2 3 8 7 0 0 0 0 0 21 SSW 0 0 0 2 6 7 10 0 0 0 0 0 25 SW 0 0 0 1 5 14 2 0 0 0 0 0 22 WSW 0 0 0 3 3 1 1 0 0 0 0 0 8 W 0 0 0 3 3 0 0 0 0 0 0 0 6 WNW 0 0 1 4 7 4 1 0 0 0 0 0 17 NW 0 0 0 1 2 3 2 0 0 0 0 0 8 NNW 0 0 0 0 2 0 0 0 0 0 0 0 2 TOTALS 0 1 2 29 42 45 31 3 2 0 0 0 155 NUMBER OF VALID HOURS 155 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 155 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY July - September TABLE4A SITE: SAN ONOFRE PERIOD OF RECORD 11070100-11093023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL C SLIGHTLY UNSTABLE (-1.7 < DT/DZ. -1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 2 1 1 0 0 0 0 0 0 4 NNE 0 0 0 0 1 6 2 0 0 0 0 0 9 NE 0 0 0 1 4 4 0 0 0 0 0 0 9 ENE 0 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 1 0 0 0 0 0 0 1 ESE 0 0 0 1 0 3 2 0 0 0 0 0 6 SE 0 0 0 3 0 0 5 0 0 0 0 0 8 SSE 0 0 0 2 4 15 12 7 1 0 0 0 41 S 0 0 0 1 5 9 17 0 0 0 0 0 32 SSW 0 0 0 4 5 8 9 .0 0 0 0 0 26 SW 0 0 1 4 5 9 5 0 0 0 0 0 24 WSW 0 0 0 5 6 9 4 0 0 0 0 0 24 W 0 0 0 2 1 4 1 0 0 0 0 0 8 WNW 0 0 0 2 6 4 1 0 0 0 0 0 13 NW 0 0 0 7 6 2 6 1 0 0 0 0 22 NNW 0 0 0 3 4 1 1 0 0 0 0 0 9 TOTALS 0 0 1 37 48 76 65 8 1 0 0 0 236 NUMBER OF VALID HOURS 236 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 236 PASQUILL D NEUTRAL (-1.5 < DT/DZ. -0.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0' 10.0 13.0 18.0 N 0 0 1 7 13 6 1 1 0 0 0 0 29 NNE 0 0 2 9 22 27 3 0 0 0 0 0 63 NE 0 0 0 2 6 6 0 1 0 0 0 0 15 ENE 0 2 0 4 2 1 0 0 0 0 0 0 9 E 0 0 2 6 6 7 1 0 0 0 0 0 22 ESE 0 0 2 5 1 12 5 0 0 0 0 0 25 SE 0 0 0 3 9 24 17 0 0 0 0 0 53 SSE 0 0 0 7 14 50 50 1 0 0 0 0 122 S 0 0 2 11 18 33 17 2 0 0 0 0 83 SSW 0 0 1 14 14 13 9 0 0 0 0 0 51 SW 0 0 2 9 9 4 2 0 0 0 0 0 26 WSW 0 0 1 13 2 13 3 0 0 0 0 0 32 W 0 1 3 7 4 8 6 3 0 0 0 0 32 WNW 0 0 2 11 3 6 2 1 0 0 0 0 25 NW 0 0 5 12 7 11 9 0 0 0 0 0 44 NNW 0 0 1 14 6 7 0 1 0 0 0 0 29 TOTALS 70 3 24 134 136 228 125 10 0 0 0 0 660 NUMBER OF VALID HOURS 660 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 660 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY July - September TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11070100-11093023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL E SLIGHTLY STABLE (-0.5 < DT/DZ. 1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 1 1 8 5 3 1 0 0 0 0 0 19 NNE 0 0 5 18 14 15 0 0 0 0 0 0 52 NE 0 0 1 7 3 0 0 0 0 0 0 0 11 ENE 0 0 1 4 2 2 0 0 0 0 0 0 9 E 0 0 1 3 2 1 1 0 0 0 0 0 8 ESE 0 0 1 2 3 3 0 0 0 0 0 0 9 SE 0 1 0 1 3 2 2 0 0 0 0 0 9 SSE 0 1 0 1 8 5 3 0 0 0 0 0 18 S 0 0 0 3 3 1 2 1 0 0 0 0 10 SSW 0 0 2 1 0 2 0 0 0 0 0 0 5 SW 0 0 0 1 3 0 0 0 0 0 0 0 4 WSW 0 0 1 2 0 1 0 0 0 0 0 0 4 W 0 1 0 1 1 0 1 0 0 0 0 0 4 WNW 0 0 2 1 0 7 3 1 0 0 0 0 14 NW 0 0 0 1 1 3 1 0 0 0 0 0 6 NNW 0 0 1 4 1 7 1 0 0 0 0 0 14 TOTALS 0 4 16 58 49 52 15 2 0 0 0 0 196 NUMBER OF VALID HOURS 196 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 196 PASQUILL F MODERATELY STABLE (1.5 < DT/DZ 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 2 1 1 0 0 0 0 0 4 NNE 0 0 0 7 22 16 1 0 0 0 0 0 46 NE 0 0 0 0 2 2 0 0 0 0 0 0 4 ENE 0 0 0 0 1 0 0 1 0 0 0 0 2 E 0 0 0 0 1 2 0 0 0 0 0 0 3 ESE 0 0 0 0 0 1 0 1 0 0 0 0 2 SE 0 0 0 0 2 3 1 0 0 0 0 0 6 SSE 0 0 0 3 1 0 1 0 0 0 0 0 5 S 0 0 2 4 2 0 0 0 0 0 0 0 8 SSW 0 0 0 0 2 1 1 0 0 0 0 0 4 SW 0 0 1 1 1 0 0 0 0 0 0 0 3 WSW 0 0 0 1 4 2 0 0 0 0 0 0 7 W 0 0 0 0 1 3 1 0 0 0 0 0 5 WNW 0 0 0 0 2 3 1 0 0 0 0 0 6 NW 0 0 0 0 1 1 1 0 0 0 0 0 3 NNW 0 0 0 1 1 1 0 0 0 0 0 0 3 TOTALS 0 0 3 17 45 36 8 2 0 0 0 0 111 NUMBER OF VALID HOURS 111 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 111 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY July - September TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11070100-11093023 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL G EXTREMELY STABLE (DT/DZ > 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 2 1 0 0 0 0 0 3 NNE 0 0 0 0 1 19 4 0 0 0 0 0 24 NE 0 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 1 0 0 0 0 0 0 0 0 1 E 0 0 0 1 0 1 0 0 0 0 0 0 2 ESE 0 0 0 1 0 1 0 0 0 0 0 0 2 SE 0 0 0 0 0 1 1 0 0 0 0 0 2 SSE 0 0 0 1 1 1 0 0 0 0 0 0 3 S 0 0 0 2 0 0 0 0 0 0 0 0 2 SSW 0 0 0 0 0 0 0 0 0 0 0 0 0 SW 0 0 0 2 3 1 0 0 0 0 0 0 6 WSW 0 0 0 3 0 0 0 0 0 0 0 0 3 W 0 0 0 0 0 0 0 0 0 0 0 0 0 WNW 0 0 0 2 0 2 1 0 0 0 0 0 5 NW 0 0 0 1 1 1 2 0 0 0 0 0 5 NNW 0 0 1 0 0 0 0 0 0 TOTALS 0 0 0 15 6 29 9 0 0 0 0 0 59 NUMBER OF VALID HOURS 59 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 59 ALL STABILITY CLASSES, ALL DT/DZ WIND SPEED (M/S) AT 10 METER LEVEL WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 1 2 20 23 15 5 1 0 0 0 0 67 NNE 0 0 7 38 68 86 15 0 0 0 0 0 214 NE 0 0 1 10 18 12 1 1 0 0 0 0 43 ENE 0 2 1 11 6 3 0 1 0 0 0 0 24 E 0 0 3 11 9 14 2 0 0 0 0 0 39 ESE 0 0 4 12 5 21 7 1 0 0 0 0 50 SE 0 1 0 9 15 31 28 0 0 0 0 0 84 SSE 0 1 0 14 28 82 72 12 3 0 0 0 212 S 0 2 4 23 31 64 62 10 0 0 0 0 196 SSW 0 0 3 22 34 55 55 0 0 0 0 0 169 SW 0 0 4 20 35 75 40 0 0 0 0 0 174 WSW 0 0 2 29 24 110 63 2 0 0 0 0 230 W 0 2 3 16 19 106 117 4 0 0 0 0 267 WNW 0 0 5 23 28 71 124 8 0 0 0 0 259 NW 0 0 5 24 20 33 34 3 0 0 0 0 119 NNW 0 0 2 23 16 17 2 1 0 0 0 0 61 TOTALS 0 9 46 305 379 795 627 44 3 0 0 0 2208 NUMBER OF VALID HOURS 2208 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 2208 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY October - December TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11100100-11123123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL A EXTREMELY UNSTABLE (DT/DZ. -1.9 C/1 00 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 0 1 2 0 0 0 0 3 NNE 1 0 0 0 1 0 0 0 0 0 0 0 2 NE 0 0 0 0 0 0 0 0 0 0 0 0 0 ENE 0 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 1 0 1 0 0 2 0 0 ESE 0 0 0 1 1 0 0 0 0 0 0 0 2 SE 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 2 2 7 2 0 0 0 0 13 S 0 0 0 1 6 17 20 1 0 0 0 0 45 SSW 0 0 0 1 7 16 8 0 0 0 0 0 32 SW 0 0 0 7 12 13 3 2 0 0 0 0 37 WSW 0 0 0 3 14 24 18 1 1 0 0 0 61 W 0 0 0 1 12 72 42 2 1 0 0 0 130 WNW 0 0 0 0 2 52 53 4 0 0 0 0 111 NW 0 0 0 0 1 4. 8 1 0 0 0 0 14 NNW 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTALS 1 0 0 14 58 201 160 16 2 0 0 0 452 NUMBER OF VALID HOURS 452 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 452 PASQUILL B MODERATELY UNSTABLE (-1.9 < DT/DZ. -1.7 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 0 1 0 1 0 0 0 0 2 NNE 4 0 0 0 0 0 0 1 0 0 0 0 5 NE 0 0 0 0 1 0 0 0 0 0 0 0 1 ENE 0 0 0 0 0 0 0 0 0 0 0 0 0 E 0 0 0 0 0 0 0 0 0 0 0 0 0 ESE 0 0 0 0 0 0 1 0 0 0 0 0 1 SE 0 0 0 0 0 0 0 0 0 0 0 0 0 SSE 0 0 0 0 1 1 12 4 0 0 0 0 18 S 0 0 0 0 0 2 3 0 0 0 0 0 5 SSW 0 0 0 0 0 2 3 1 0 0 0 0 6 SW 0 0 0 1 0 2 2 1 0 0 0 0 6 WSW 0 0 0 0 1 0 0 0 0 0 0 0 1 W 0 0 0 1 2 2 0 0 0 0 0 0 5 WNW 0 0 0 1 1 2 1 0 0 0 0 0 5 NW 0 0 0 0 1. 4 3 0 0 0 0 0 8 NNW 0 0 0 0 0 0 1 0 0 0 0 0 1 TOTALS 4 0 0 3 7 16 26 8 0 0 0 0 64 NUMBER OF VALID HOURS 64 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 64 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY October - December TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11100100-11123123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL C SLIGHTLY UNSTABLE (-1.7 < DT/DZ. -1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 1 0 0 0 0 0 0 0 1 NNE 2 0 0 0 2 2 0 0 0 0 0 0 6 NE 0 0 0 0 0 0 1 1 0 0 0 0 2 ENE 0 0 1 0 0 0 0 0 0 0 0 0 1 E 0 0 0 0 1 0 1 0 0 0 0 0 2 ESE 0 0 0 0 1 0 0 0 1 0 0 0 2 SE 0 0 0 1 0 0 0 1 3 0 0 0 5 SSE 0 0 0 0 0 3 4 2 2 0 0 0 11 S 0 0 0 1 1 1 4 0 2 1 0 0 10 SSW 0 0 0 0 1 2 1 0 0 0 0 0 4 SW 1 0 0 1 1 0 5 0 0 0 0 0 8 WSW 0 0 0 2 0 0 0 0 0 0 0 0 2 W 0 0 0 3 3 4 0 0 0 0 0 0 10 WNW 0 0 0 1 4 1 0 0 0 0 0 0 6 NW 0 0 0 1 0 4 1 0 0 0 0 0 6 NNW 1 1 0 0 0 2 TOTALS 3 0 1 10 15 18 17 5 8 1 0 0 78 NUMBER OF VALID HOURS 78 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 78 PASQUILL D NEUTRAL (-1.5 < DT/DZ. -0.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 . 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 .18.0 N 0 0 1 5 5 7 2 3 0 0 0 0 23 NNE 0 1 0 11 13 12 2 4 1 0 0 0 44 NE 0 0 0 2 4 1 1 0 0 0 0 0 8 ENE 0 0 1 5 1 1 0 0 0 0 0 0 8 E 0 0 0 3 4 0 3 0 0 0 0 0 10 ESE 0 0 0 3 2 8 10 1 3 0 0 0 27 SE 0 0 0 1 5 12 23 10 1 0 0 0 52 SSE 0 0 0 4 11 15 21 7 5 3 0 0 66 S 0 0 1 5 7 10 7 1 1 2 0 0 34 SSW 0 0 1 3 3 2 14 2 0 0 0 0 25 SW 0 0 1 5 3 5 8 4 3 0 0 0 29 WSW 0 1 1 5 4 1 2 1 1 0 0 0 16 W 0 0 2 6 4 5 1 0 1 0 0 0 19 WNW 0 0 0 4 5 8 3 0 0 0 0 0 20 NW 0 0 0 3 5 14 8 0 0 0 0 0 30 NNW 0 0 1 2 8 8 2 0 0 0 0 0 21 TOTALS 0 2 9 67 84 109 107 33 16 5 0 0 432 NUMBER OF VALID HOURS 432 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 432 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY October - December TABLE 4A SITE: SAN ONOFRE PERIOD OF RECORD 11100100-11123123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL E SLIGHTLY STABLE (-0.5 < DT/DZ. 1.5 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1. 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 1 7 3 6 1 1 0 0 0 0 19 NNE 0 0 3 13 17 14 4 0 0 0 0 0 51 NE 0 0 4 10 5 3 3 2 0 0 0 0 27 ENE 0 0 1 7 8 5 5 0 2 0 0 0 28 E 0 0 2 5 5 10 2 1 4 1 0 0 30 ESE 0 0 2 6 4 6 3 0 1 0 0 0 22 SE 0 0 0 3 2 7 10 1 0 0 0 0 23 SSE 0 0 0 0 3 1 2 1 0 0 0 0 7 S 0 0 1 6 2 4 0 0 0 0 0 13 0

SSW 0 0 1 1 0 1 0 0 1 0 0 0 4 SW 0 0 0 2 1 0 0 0 0 0 0 0 3 WSW 0 0 0 2 4 1 1 0 0 0 0 0 8 W 0 0 0 4 2 4 0 0 0 0 0 0 10 WNW 0 1 0 4 2 3 6 2 0 0 0 0 18 NW 0 1 2 4 3 5 2 0 0 0 0 0 17 NNW 0 0 2 4 4 4 4 0 0 0 0 0 18 TOTALS 0 2 19 78 65 74 43 8 8 1 0 0 298 NUMBER OF VALID HOURS 298 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 298 PASQUILL F MODERATELY STABLE (1.5 < DT/DZ. 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2,0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 0 7 5 1 0 0 0 0 0 13 NNE 0 0 3 17 37 58 19 0 0 0 0 0 134 NE 0 0 4 18 19 16 3 0 0 0 0 0 60 ENE 0 1 3 13 7 12 2 0 0 0 0 0 38 E 0 1 0 2 1 3 0 0 0 0 0 0 7 ESE 0 0 0 0 6 5 1 0 0 0 0 0 12 SE 0 0 0 0 2 1 1 0 0 0 0 0 4 SSE 0 0 0 2 1 3 3 0 0 0 0 0 9 S 0 0 0 1 4 0 1 0 0 0 0 0 6 SSW 0 0 0 0 1 1 0 0 0 0 0 0 2 SW 0 0 0 1 0 0 0 1 0 0 0 0 2 WSW 0 0 0 3 0 0 0 0 0 0 0 0 3 W 0 0 1 1 6 2 0 0 0 0 0 0 10 WNW 0 0 0 3 1 11 2 0 0 0 0 0 17 NW 0 0 0 1 3 2 0 0 0 0 0 0 6 NNW 0 0 0 4 1 1 1 0 0 0 0 0 7 TOTALS 0 2 11 66 96 120 34 1 0 0 0 0 330 NUMBER OF VALID HOURS 330 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 330 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2011 METEOROLOGY October - December TABLE4A SITE: SAN ONOFRE PERIOD OF RECORD 11100100-11123123 WIND SPEED (M/S) AT 10 METER LEVEL PASQUILL G EXTREMELY STABLE (DT/DZ > 4.0 C/100 METERS)

WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 0 2 1 7 3 0 0 0 0 0 13 NNE 1 0 0 5 17 135 213 9 0 0 0 0 380 NE 0 0 0 3 17 38 16 1 0 0 0 0 75 ENE 0 0 1 3 5 7 5 0 0 0 0 0 21 E 0 0 0 0 4 4 3 0 0 0 0 0 11 ESE 0 0 0 2 1 2 0 0 0 0 0 0 5 SE 0 0 0 0 0 1 0 0 0 0 0 0 1 SSE 0 0 0 0 1 4 2 0 0 0 0 0 7 S 0 0 0 2 3 1 1 1 0 0 0 0 8 SSW 0 0 0 2 0 0 1 0 0 0 0 0 3 SW 0 0 0 0 2 2 0 0 0 0 0 0 4 WSW 0 0 0 2 0 1 0 0 0 0 0 0 3 W 0 0 0 0 2 4 0 0 0 0 0 0 6 WNW 0 0 1 0 4 3 1 0 0 0 0 0 9 NW 0 0 1 0 1 0 1 0 0 0 0 0 3 NNW 0 0 0 0 1 3 1 0 0 0 0 5 TOTALS 1 0 3 21 59 212 247 11 0 0 0 0 554 NUMBER OF VALID HOURS 554 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 554 ALL STABILITY CLASSES, ALL DT/DZ WIND SPEED (M/S) AT 10 METER LEVEL WIND .22 .51 .76 1.1 1.6 2.1 3.1 5.1 7.1 10.1 13.1 >18 TOTAL DIR .50 .75 1.0 1.5 2.0 3.0 5.0 7.0 10.0 13.0 18.0 N 0 0 2 14 17 26 8 7 0 0 0 0 74 NNE 8 1 6 46 87 221 238 14 1 0 0 0 622 NE 0 0 8 33 46 58 24 4 0 0 0 0 173 ENE 0 1 7 28 21 25 12 0 2 0 0 0 96 E 0 1 2 10 15 18 9 2 4 1 0 0 62 ESE 0 0 2 12 15 21 15 1 5 0 0 0 71 SE 0 0 0 5 9 21 34 12 4 0 0 0 85 SSE 0 0 0 6 19. 29 51 16 7 3 0 0 131 S 0 0 2 16 23 35 36 3 3 3 0 0 121 SSW 0 0 2 7 12 24 27 3 1 0 0 0 76 SW 1 0 1 17 19 22 18 8 3 0 0 0 89 WSW 0 1 1 17 23 27 21 2 2 0 0 0 94 W 0 0 3 16 31 93 43 2 2 0 0 0 190 WNW 0 1 1 13 19 80 66 6 0 0 0 0 186 NW 0 1 3 9 14 33 23 1 0 0 0 0 84 NNW 0 0 3 10 14 17 9 1 0 0 0 0 54 TOTALS 9 6 43 259 384 750 634 82 34 7 0 0 2208 NUMBER OF VALID HOURS 2208 NUMBER OF CALMS 0 NUMBER OF INVALID HOURS 0 TOTAL HOURS FOR THE PERIOD 2208

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