DCL-03-048, Annual Radiological Environmental Operating Report

Annual Radiological Environmental Operating Report

ML031290022
Person / Time
Site:	Diablo Canyon
Issue date:	04/30/2003
From:	Becker J Pacific Gas & Electric Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-03-048
Download: ML031290022 (97)

Text

Pacific Gas and

./ "S Electric Company James R. Becker Vice President-Diablo Canyon Operations and Station Director Diablo Canyon Power Plant PO Box 56 Avila Beach, CA 93424 805 545 3462 Fax 805 5454234 April 30, 2003 PG&E Letter DCL-03-048 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 2002 Annual Radiological Environmental Operating Report

Dear Commissioners and Staff:

Enclosed is the 2002 Annual Radiological Environmental Operating Report for Diablo Canyon Power Plant, Units 1 and 2, submitted in accordance with Technical Specification 5.6.2. The enclosure contains material consistent with the objectives of the Offsite Dose Calculation Manual, and in 10 CFR 50, Appendix I, Sections IV.B.2, IV.B.3, and IV.C.

Should you have any questions regarding this submittal, please contact Bob Lorenz at (925) 866-5302.

Sincerel'

/James R. Becker rlj/18131R0219570 Enclosure cc:

Diablo Distribution cclenc:

Edgar D. Bailey, DHS RogerW. Briggs Larry Allen Ellis W. Merschoff David L. Prouix Girija S. Shukla

'
--Oq 5 L,__II A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callawav

• Comanche Peak

• Diablo Canvon

• Palo Verde

• South Texas Proiect

• Wolf Creek

L R E P 0 R

T TES T E C H N I C A L A N D ECOLOGICAL SERVICES

2002 Annual Radiological Environmental Operating Repo."t Diablo Canyon Power Plant Prepared by R. W. Lorenz D. L. Brownrigg E. A. Gedney B. Nekkab April 2003 Report No.: 420DC-03.24 Pacific Gas and Electric Company Technical and Ecological Services 3400 Crow Canyon Road, San Ramon, California 94583 TES 24-Hr. Service Line: 8-251-3197 or (925) 866-3197

EXECUTIVE

SUMMARY

This report contains results from the operational Radiological Environmental Monitoring Program (REMP) for Diablo Canyon Power Plant (DCPP) compiled for the period January 1, 2002, through December 31, 2002. This program is conducted in accordance with DCPP Program Directive CY2, "Radiological Monitoring and Controls Program," and RP L1ID 11, "Environmental Radiological Monitoring Procedure."

The results of the 2002 REMP showed no unusual findings from plant operations, and that the operation of DCPP had no significant radiological impact on the environment. Plant operations had no significant impact on airborne radioactivity in the environment. The ambient direct radiation levels in the DCPP environs did not change and were within the preoperational range. One of 36 surface water samples contained tritium above the detection levels but the activity detected was well below the reporting level for tritium. No other plant related radionuclides were detected in surface water samples. The plant had no significant impact on surface water. Food crops sampled during their growing season and milk samples collected detected only naturally occurring radioactivity; and therefore, there was no impact from plant operation. Three out of 91 marine samples contained other than naturally occurring radionuclides. Cobalt-58 was detected in three algae samples collected from Diablo Cove, and in one of these samples cobalt-60 was also detected. The cobalt radionuclides detected in these algae samples was slightly above detection levels. There is no reporting level for radionuclides detected in algae samples.

Low concentrations of various plant related radionuclides have been detected in algae collected from Diablo Cove several times in the operational period. However, the detected radionuclide concentrations have been random and near the lower limits of detection. Therefore, there is no increasing trend of plant related radionuclides in algae collected from Diablo Cove.

420DC-03_24.doc i

CONTENTS Page 1 INTRODUCTION 1-1 DCPP ENVIRONMENTAL MONITORING PROGRAM..................................

1-1 2

SAMPLING METhODS.......................

2-1 AIRBORNE RADIOACTIVITY.

2-1 DIRECT RADIATION.

2-1 WATER SAMPLES.

2-1 MARINE BIOLOGICAL AND SEDIMENT SAMPLES.

2-2 FOOD CROPS.

2-2 MIILK.2-2 3

SAMPLE ANALYSES................

3-1 AIRBORNE RADIOACTIVITY...................................................................

3-1 DIRECT RADIATION...................................................................

3-1 WATER SAMPLES...................................................................

3-3 MARINE BIOLOGICAL AND SEDIMENT SAMPLES.........................................................

3-3 FOOD CROPS...................................................................

3-3 MILK...................................................................

3-3 4

QUALITY CONTROL...................................................................

4-1 5

LAND USE CENSUS...................................................................

5-1 6

RESULTS AND DISCUSSION...................................................................

6-1 AIRBORNE RADIOACTIVITY.

6-1 DIRECT RADIATION...................................................................

6-6 WATER SAMPLES...................................................................

6-6 MARINE BIOLOGICAL AND SEDIMENT SAMPLES.........................................................

6-6 FOOD CROPS...........

6-7 MILK...................................................................

6-7 7

COMPARISON OF PREOPERATIONAL AND OPERATIONAL DATA...........

7-1 AIRBORNE RADIOACTIVITY...................................................................

7-1 DIRECT RADIATION...................................................................

7-3 420DC-03_24 doc ii

CONTENTS (Continued)

Page WATER SAMPLES...................................................................

7-3 ALGAE SAMPLES...................................................................

7-3 8

PROGRAM VARIANCE...................................................................

8-1 AIRBORNE RADIOACTIVITY.................

8-1 MARINE AND TERRESTRIAL SAMPLES...................................................................

8-1 SUPPLEMENTAL SAMPLES...................................................................

8-1 9

REFERENCES...................................................................

9-1 Appendix A:

ENVIRONMENTAL RADIATION MONITORING PROGRAM SUMMARIES Appendix B:

ANALYTICAL RESULTS 420DC-03_24.doc Hii

FIGURES Figure Page I

Units 1 and 2 Diablo Canyon off-site stations

.......................... 1-6 2

Units 1 and 2 Diablo Canyon on-site stations....................................

1-7 3

Units 1 and 2 Diablo Canyon Power Plant - land use census.

5-3 4

Air particulates gross beta activities 6-2 5

Control Chart for Air Particulate Filters

............................... 7-2 6

Control Chart for TLD data...............................................................7..................................

7-4

-7 Control Chart for Tritium Level in Seawater...............................................................

7-5 8

Control Chart for Co-58 Algae (Iridaea) 7-6 9a Control Chart for Co-58 Kelp Blades.

7-7 9f Control Chart for Co-60 Algae (Iridaea) 7-8 TABLES Table Page 1

Summary of the Radiological Environmental Monitoring Program

.1-2 2

Distances and Directions to Environmental Monitoring Stations

.1-4 3

Maximum Values for Lower Limits of Detection (LLD)

.3-2 4

Reporting Levels for Radioactivity Concentrations in Environmental Samples.6-8 A-1 Environmental Radiological Monitoring Program Summary - Airborne.A-1 A-2 Environmental Radiological Monitoring Program Summary - Direct Radiation.A-2 A-3a Environmental Radiological Monitoring Program Summary - Surface Water.A-3 A-3b Environmental Radiological Monitoring Program Summary - Drinking Water.A-4 A-4 Environmental Radiological Monitoring Program Summary - Mussels.A-5 A-5 Environmental Radiological Monitoring Program Summary - Fish.A-6 A-6 Environmental Radiological Monitoring Program Summary - Algae.A-7 A-7 Environmental Radiological Monitoring Program Summary - Sediment.A-8 A-8 Environmental Radiological Monitoring Program Summary - Food Crops.A-9 A-9 Environmental Radiological Monitoring Program Summary - Milk.A-1 A-10 Analytics Performance Evaluation Programs.A-1I 420DC-03_24.doc iv

TABLES (Continued)

Table Page B-i State Cross-Check Results...............................................................

B-1i B-2 Marine and Terrestrial Sample Data - Detected Nuclides.............................

B-4 B-3 Airborne Radioactivity...............................................................

B-5 B4 Environmental Dosimetry...............................................................

B-19 B-5 Land Use Census...............................................................

B-20 B-6 Lower Limits of Detection (LLD) Exceeded...

B-21 B-7 List of Marine and Terrestrial Samples Collected and Analyzed................

B-22 420DC-03_24 doc v

Section 1 INTRODUCTION Diablo Canyon Power Plant (DCPP) consists of two Westinghouse pressurized water reactors. Unit I began commercial operation in 1985, and Unit 2 began commercial operation in 1986. This report contains results from the operational Radiological Environmental Monitoring Program (REMP) for DCPP compiled for the period January 1, 2002, through December 31, 2002. This program was designed to identify and quantify ambient radioactivity concentrations in the DCPP environs and to determine whether there were any significant increases in the concentration of radionuclides, attributable to plant operations, in the critical dose pathways from the environment to man. Also included in this report are the results of PG&E's Technical and Ecological Services (TES) participation in an external lab cross check program, a discussion of the TES results compared with the results from the State of California Department of Health Services (DHS) Sanitation and Radiation Laboratory (SRL) of the same or duplicate samples, and the current land use census of the plant environs conducted by plant personnel.

DCPP ENVIRONMENTAL MONITORING PROGRAM The REMP was conducted in accordance with DCPP Program Directive CY2, "Radiological Monitoring and Controls Program," and RP 1.ID 11, "Environmental Radiological Monitoring Procedure."

The environmental media selected were based on the critical dose pathways of the radionuclides from the environment to man. They included the following: direct radiation, air, water, fish, and invertebrates.

Supplemental samples such as algae, local agricultural crops, and milk were also collected. The collection frequency of the samples from the different media is summarized in Table 1. The samples were collected by PG&E's DCPP personnel.

The sampling locations were determined by land use, site meteorology, and local demographics. The distances and directions to the environmental monitoring stations are listed in Table 2. The off-site and on-site stations are shown in Figures 1 and 2, respectively.

420DC-03_24.doc 1-1

Table 1 Summary of the Radiological Environmental Monitoring Program Exposure Pathway Collection and/or Sample Sampling Locations(b)

Type of Analysis Frequency Direct radiation(a) 31 stations (MTI, WNl, Gamma exposure Quarterly OSI, 5S1, 6S1, 8S1, 8S2, 5S3, 2DI, 4DI, SF1, IAI, 7D2, 7G2, 7C1, 7F1, OB1, 7D1, 4C1, OS2, iSI, 251, 3S1, 4SI, 7SI, 9SI, ICI, SCI, 3D1, 6D1, SF3)

Particulate filters 7 stations (MT1, OS2, ISI, Gross beta, Weekly(c) 5F1, 7DI, 8S1, 8S2) gamma isotopic Quarterly composite Iodine cartridges 7 stations (MT1, OS2, 15, Gamma for 1-131 Weekly 5F1, 7D1, 8S1, 8S2)

Surface water 3 stations (DCM, 7C2, Gamma isotopic, Monthly OUT) tritium Drinking water 2 stations (DWI, 5S2)

Gamma isotopic, Monthly radioiodine, tritium Sediment Diablo Cove (DCM)

Gamma isotopic Annually Rattlesnake Canyon (7C2)

Intertidal algae(d)

Diablo Cove (DCM)

Gamma isotopic Quarterly if Rattlesnake Canyon (7C2)

Available Kelp(d)

Diablo Cove (DCM)

Gamma isotopic Quarterly if Pacific Ocean North (PON)

Available Pacific Ocean South (POS)

Rattlesnake Canyon (7C2)

Milk(d)

I station (5F2)

Gamma isotopic, Monthly radioiodine Table Notation:

(a) Three TLD badges are placed at each station.

(b) See Figures I and 2 for locations.

(c) Filters changed weekly or more frequently as required by dust loading; analyzed at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after filter change.

(d) Supplemental sample.

I 420DC-03_24 doc 1-2

Table 1 (continued)

Summary of the Radiological Environmental Monitoring Program Exposure Pathway Collection and/or Sample Sampling Locations(b)

Type of Analysis Frequency Rockfish Diablo Cove (DCM)

Gamma isotopic Quarterly if (Sebastes sp.)

Pacific Ocean North (PON)(d)

Available Pacific Ocean South (POS)(d)

Rattlesnake Canyon (7C2)

Perch Diablo Cove (DCM)

Gamma isotopic Quarterly if (Family Embiotocidae)

Pacific Ocean North (PON)(d)

Available Pacific Ocean South (pOS)(d)

Rattlesnake Canyon (7C2)

Fish Fish Market at Avila Pier Gamma isotopic Quarterly if (species unspecified)

(7D3)(d)

Available Mussels Diablo Cove (DCM)

Gamma isotopic Quarterly if (Mytilus californianus)

Pacific Ocean North (PON)(d)

Available Pacific Ocean South (POS)(d)

Rattlesnake Canyon (7C2)

Red abalone(d)

Diablo Cove (DCM)

Gamma isotopic Semiannually if (Haliotis refescens)

Rattlesnake Canyon (7C2)

Available Food crops(d).

4 stations (5F2, 7G1, 7C1, Gamma isotopic Monthly if available 6CI)

(6CI is sampled quarterly)

Table Notation:

(a) Three TLD badges are placed at each station.

(b) See Figures I and 2 for locations.

(c) Filters changed weekly or more frequently as required by dust loading; analyzed at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after filter change.

(d) Supplemental sample.

420DC-03_24.doc 1-3

Table 2 Distances and Directions to Environmental Monitoring Stations*

Radial Direction**

Radial Distance**

Station (True Heading)

From Plant Code(a)

Station Name (Degrees)

(km)

(Miles) 0S1 Exclusion Fence-Northwest Corner 320 0.2 (0.1) 0S2 North Gate 320 0.8 (0.5)

MIS Wastewater Pond 330 0.6 (0.4) 2S1 Back Road-300 m North of Plant 0

0.3 (0.2) 3S1 Road NW of 230 kV Switchyard 23 0.6 (0.4) 4SI Back Road between Switchyard 43 0.8 (0.5) 5S1 500 kV Switchyard 58 0.6 (0.4) 5S2 Diablo Creek Weir 65 1.0 (0.6) 5S3 Microwave Tower Road 70 1.0 (0.7) 6S1 Microwave Tower 94 0.8 (0.5) 7S1 Overlook Road 112 0.5 (0.3) 8S1 Target Range 125 0.8 (0.5) 8S2 Southwest Site Boundary (Sec. Met Tower) 128 1.8 (1.1) 9S1 South Cove 167 0.6 (0.4)

MT1 Meteorological Tower 185 0.3 (0.2)

DCM Diablo Cove 270 0.3 (0.2)

WN1 Northwest Guard Shack 290 0.3 (0.2) l lA Crowbar Canyon 327 2.6 (1.6) 0B 1 Point Buchon 325 5.8 (3.6) lC1 Montana de Oro Campground 336 7.5 (4.7) 4C1 Clark Valley Gravel Pit 45 9.3 (5.8)

SCi Junction Prefumo/See Canyon roads 64 7.5 (4.7) 6C1 Household garden (nearest site boundary) 97.5 7.2 (4.6) 7C1 Pecho Creek Ruins (Mello Farm) 120 6.6 (4.1) 7C2 Rattlesnake Canyon 124 7.5 (4.7) 2D1 Sunnyside School 10 11.0 (6.9) 3D1 Clark Valley 24 9.9 (6.2) 4D1 Los Osos School 36 12.2 (7.6) 6D1 Junction See Canyon/Davis Canyon roads 89 12.0 (7.5) 7D1 Avila Gate 118 10.6 (6.6) 7D2 Avila Beach 110 12.2 (7.6) 7D3 Avila Pier 120 11.0 (6.9) 2F1 Morro Bay (Commercial Landing) 0 17.4 (10.9)

SF1 SLO Zone 1 Substation 68 17.9 (11.2)

SF2 Cal Poly Farm 60 20.2 (12.6)

SF3 SLO County Health Department 70 20.3 (12.7) 7F1 Shell Beach 110 17.3 (10.8) 7G1 Arroyo Grande (Kawaoka Farm) 115 26.9 (16.8) 7G2 Oceano Substation 118 27.7 (17.3)

OUT Plant Outfall 270 0.3 (0.2)

DWI Drinking Water On-site PON Pacific Ocean North of Diablo Cove 305 2.4 (1.5)

POS Pacific Ocean South of Diablo Cove 145 1.3 (0.8)

• Stations are shown in Figures I and 2.

• • The reference point used is the dome of Unit I containment 420DC-03_24 doc 1-4

.Table 2 (continued)

Distances and Directions to Environmental Monitoring Stations (a) Station Code MXZ):--

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

0O

- Northwest 5 - East-niortheast 1 - North-northwest 6 - East 2 - North 7 - East-soutl~east 3 - North-northeast -8

- Southeast

'4 - Northeast 9 - South-southeast Y - Letter'(S, A-H) represents the distan6e from the plant:

S On-site A 2 miles from' plant (but off-site)

B 4 miles from plant C,- 4-6 miles from plant D 8 miles from plant E 10 miles from plant F 15 miles from plant G 20 miles from plant

• H -Greater than 20 miles from plant Z - Second number represents the station number within the zone.

Station Code (DCM. MTI.WN1. PON. POS. OUT. DWIV The following stations do not follow the coding system: Diablo Cove Marine (DCM), Meteorological Tower (MT1), Northwest gurd shack (WN 1), Pacific Ocean North (PON), Pacific Ocean South (POS), Plant Ouffall (OUT), and Drinking Water (DWI).

420DC-03_24.doc 14-5

0 2

4 miles A Dosimetry Station I I,

U Air Particulate Station SCALE Biological Sampling Station Diablo Canyon Power Plant Figure 1. Units I and 2 Diablo Canyon off-site stations.

970=381off-sde*9c1-420DC-03_24.doc 1-6

(C --.w -,,

r

[E -

(-

(

(--

I_

1--

,_ I I-to-C--

(- -

1 1-r-

t--

~

(--,

Zi 0

e!84z 2w Figure 2. Units I and 2 Diablo Canyon on-site stations.

420DC-03_24 doc 1-7

Section 2 SAMPLING METHODS This section summarizes briefly the various sampling methods.

AIRBORNE RADIOACTIVITY Air particulate and radioiodine sampling were performed weekly at six indicator stations: MT1, 0S2, IS I, 7D1, 8S1 and 8S2, and at one control station SF1.

Constant flow air samplers were used to draw air through paper filters to collect air particulates, and through triethylenediamine (TEDA) impregnated charcoal cartridges to collect radioiodine. The air samplers were set at a flow rate of 1.5 cubic foot per minute and were located one meter above the ground.

Sample volumes were determined using gas meters which were installed downstream of the sample head.

At the end of the sampling period, the filter and cartridge were collected. All necessary data regarding the air volume readings on and off, run time, sampler time on and off, date of collection, and sampler location were recorded and submitted, along with the samples, to TES for analysis.

DIRECT RADIATION Direct radiation was measured at 31 stations in the vicinity of DCPP using Panasonic UD814 TLD badges.

These badges were replaced on a quarterly basis.

The field TLD badge packets were pr epared by DCPP personnel. Control badges were carried with the field badges to measure any dose received during transit. The location, date, and time of exchange were recorded on the log sheet which accompanied the field badges.

WATER SAMPLES Water samples (drinking water and surface water) were collected monthly. Two 1-gallon plastic bottles of each water sample type were collected at their respective locations each month.

Surface water samples were collected at Diablo Cove (station DCM), Rattlesnake Canyon (station 7C2),

and at the plant outfall. Drinking water samples were collected from Diablo Creek Weir (station 5S2) located on-site and from the drinking water system at DCPP. After collection, the samples were securely sealed and labeled with sample type, location, date, time of collection, and the person performing the collection and sent to TES for analysis.

420DC-03_24 doc 2-1

MARINE BIOLOGICAL AND SEDIMENT SAMPLES The REMP requires only one sample of rockfish (Sebastes sp.), one sample of perch (family Embiotocidae), and one sample of mussels (mytilus) from indicator station DCM and control station 7C2.

All other marine samples collected are considered supplemental. These supplemental marine samples included, but were not limited to, the following: intertidal algae, kelp, and market fish. The intertidal samples (algae and mussels) were collected quarterly during low tidal conditions. Kelp was collected quarterly from the offshore kelp bed in the vicinity of the plant. Quarterly samples of fish and an annual sample of ocean bottom sediment were collected from the plant environs by divers. Fish caught locally and purchased from the fish market were also analyzed. All samples were subject to unavailability due to seasonal fluctuations or unfavorable sampling conditions.

The samples were sealed in plastic bags immediately upon collection and labeled with sample type, location, date, time of collection, and individual performing the collection before they were sent to TES.

FOOD CROPS The REMP requires broadleaf vegetation to be collected in the nearest off-site locations of the highest calculated annual average ground level D/Q (dispersion parameter). There is no broadleaf vegetation available that satisfies this requirement. However, representative samples of food crops in season were collected monthly from supplemental stations: Cal Poly Farm (station 5F2), Kawaoka Farm in Arroyo Grande (station 7G1), Mello Farm (station 7C1) along the site access road, and quarterly at a household garden (station 6C1). The samples were collected, sealed immediately in plastic bags, labeled with sample type, sample location, collection date, time of collection, and the individual performing the collection, and sent to TES for analysis.

MILK There are no milking animals in the vicinity of the plant. However, supplemental samples of milk were collected monthly from Cal Poly Farm (station SF2). Two 1-gallon plastic bottles of milk were collected each sampling period. Forty grams of sodium bisulfite preservative were added to each gallon of milk sample. The bottles were sealed and shaken thoroughly to distribute the preservative. They were labeled with sample type, sample location, date and time of collection, and the individual performing the collection, and sent to TES for analysis.

420DC-03_24 doc 2-2

Section 3 SAMPLE ANALYSES Samples received at TES were analyzed for radioactivity by standard methods as outlined in TES Work Instructions. The results of the analyses were reported at the 95 percent confidence level. All analyses were performed such that the lower limits of detection (LLDs), listed on Table 3, were achieved under; routine conditions. The LLD is an a priori (before the fact) estimate of the activity concentration that can be practically achievable with a given measuring instrument, procedure, and type of sample. This value is not intended to be used as an a posteriori (after the fact) criterion for the presence of activity.

Background fluctuation, unavoidably small sample size; the presence of interfering nuclides or other uncontrollable circumstances may occasionally render these LLDs unachievable. In such cases, the -

contributing factors are identified and described in this report. A brief description of the analyses of the different sample types and the general method of counting is discussed below. See Table 1 for the summary'of the type of analyses that were done on the different sample media.

AIRBORNE RADIOACTIVITY The filter papers collected from the field were placed on individual planchets and counted for gross beta activity in a low-background, thin-window gas proportional counter. They were analyzed at least twenty-four hours after sampling to allow for radon and thoron daughter decay. Gamma isotopic analysis was then performed on quarterly composites of the filters to determine the activity concentration of gamma emitting isotopes.

Gamma isotopic analyses were also performed on the TEDA imiipregnated charcoal cartridges to determine the radioiodine concentration. The cartridges and filter papers were counted for a time period such that the LLDs were met.

DIRECT RADIATION Panasonic (UD814) TLD badges were used to measure the ambient radiation level. The TLD badges were annealed and packaged to be sent out in the field by plant dosimetry personnel. After field exposure, the TLD badges were processed on-site. The badges were calibrated using a NIST-traceable cesium-137 source.

420DC-03_24.doc 3-1

Table 3 Maximum Values for Lower Limits of Detection (LLD)(a)

Airborne Particulate Food Water or Gas Fish Milk Products Sediment Analysis (pCiUL)

(pCi/m3)

(pCi/kg, wet)

(pCi/L)

(pCi/kg, wet)

(pCi/kg, dry)

Gross beta 4

x10-2 l

H-3 2000 Mn-54 15 130 Fe-59 30 260 Co-58, 60 15 130 Zn-65 30 260 Zr-Nb-95 15 1-131 1(b) 7x10-2 1

60 Cs-134 15 5xIO-2 130 15 60 150 Cs-137 18 6x10-2 150 18 80 180 Ba-La-140 15 15 Table Notation:

(a) The LLD is the smallest concentration of radioactive material in a sample that will be detected with 95 percent probability with 5 percent probability of falsely concluding that a blank observation represents a "real" signal For a particular measurement system (which may include radiochemical separation):

LLD =

E x V x 2.22 x Y x exp (-Xt)

1 where LLD is the lower limit of detection as defined (as pCi per unit mass or volume) sb is the standard deviation of the background counting rate or of the counting rate of a blank sample as appropriate (as counts per minute)

E is the counting efficiency (as counts per disintegration)

V is the sample size (in units of mass or volume) 2.22 is the number of disintegrations per minute per picocurie Y is the fractional radiochemical yield (when applicable)

X is the radioactive decay constant for the particular radionuclide t is the elapsed time between sample collection (or end of the sample collection period) and time of counting The value of sb used in the calculation of the LLD for a detection system shall be based on the actual observed variance of the background counting rate or of the counting rate of the blank samples (as appropriate) rather than on an unverified theoretically predicted variance. In calculating the LLD for a radionuclide determined by gamma ray spectrometry, the background shall include the typical contributions of other radionuclides normally present in the samples (e g, potassium-40 in milk samples).

(b) LLD for drinking water.

420DC-03_24 doc 3-2

WATER SAMPLES Gamma isotopic analyses were performed on all water sample types. To determine the activity concentration of gamma emitters, a known volume of the water sample was analyzed using a gamma spectrometer.

Tritium analyses were performed on drinking water and surface water. The water samples were distilled and analyzed for tritium using a liquid scintillation spectrometer. Iodine-13 1 analysis by ion exchange was also performed on each drinking water sample.

MARINE BIOLOGICAL AND SEDIMENT SAMPLES Only the edible portion of the fish and mussels were analyzed for gamma emitters. A weighed amount of the prepared sample was analyzed using a gamma spectrometer.

The kelp blades and the pneumatocyst were prepared separately for analysis. The weighed samples were then counted on the gamma spectrometer to determine the activity concentration of gamma emitters. The results reported were based on wet weight for the marine samples.

The sediment samples were first oven-dried before performing gamma isotopic analysis. The results reported for the sediment samples were based on dry weight.

FOOD CROPS The samples were placed in appropriate counting containers and analyzed to determine the gamma isotopic content. The results obtained were based on wet weight.

MILK A known volume of the milk sample was first analyzed on a gamma spectrometer to determine its gamma isotopic content. Stable iodine carrier was then added to the milk sample for determination of chemical recovery of subsequent separation. The total iodine was separated from the sample by passing the sample through an anion resin column. The iodine was chemically extracted from the resin, precipitated as cuprous iodide and counted on the gamma spectrometer.

420DC-03_24.doc 3-3

Section 4 QUALITY CONTROL -

Routine quality control was performed throughout the year to ensure the accuracy of equipment and procedures used in determining the results. The TES radiological laboratory also participates in an external lab performance evaluation program and in the California State Cross-Check Program.

The Nuclear Regulatory Commission (NRC) Branch Technical Position on Radiological Environmental Monitoring Programs and the DCPP Interdepartmental Administrative Procedure, RP 1.ID 11, Environmental Radiological Monitoring Procedure, requires that the TES laboratory participate in the Environmental Protection Agency's Environmental Radioactivity Laboratory Intercomparison Study or equivalent program. At the end of 1998, the EPA ceased to operate their Intercomparison Study. For the years of 1999, 2000, 2001, and 2002, TES has participated in an equivalent program operated by Analytics, Inc. of Atlanta, GA. The TES participation has included all determinations (sample medium-radionuclide combination) offered by Analytics which match those as part of the REMP.

The results of TES participation in Analytics Environmental Cross Check Program for this year are shown in Appendix A, Table A-l0. Participation included analysis of:

• gross alpha and gross beta emitters in water

• gross alpha and gross beta emitters on particulate filter iodine-13 1 and gamma emitters in milk

• tritium in water iodine-13 1 in charcoal cartridge

• gamma emitters in soil

• gamma emitters in vegetation

• gamma emitters in water TES results of these blind samples were acceptable using the NRC criteria for determining agreement of confirmatory radiochemical measurements (See Table A-10).

The 1998 state cross-check report, "California Nuclear Power Plant Environmental Surveillance Report,"

showed that there were no discrepancies between the results obtained by the state of California Sanitation and Radiation Laboratory (SRL) and TES. The table of TES results for the 2002 cross-check program can be found in Appendix B, Table B-i. The DHS has yet to issue a report for 1999, 2000, or 2001.

Since TES has been informed that these reports have a low priority with DHS, TES requested and 420DC-03_24.doc 4-1

obtained the results from the SRL of their comparable analyses of duplicate and split samples from the DCPP environs. TES review of this data versus that of the TES laboratory for the year 2001 (the last full year of available data) showed that there continues to be good agreement between the two laboratories.

TES intends to continue to perform our own comparison of the two laboratories data until the DHS resumes producing a cross-check report.

Two samples (kelp collected from DCM and vegetation collected from 7GI during the fourth quarter of 2001) were not forwarded to the SRL for split sampling after analyses were completed at TES. These samples, which are supplemental samples, are normally sent to the state laboratory for cross check analyses. These samples were inadvertently disposed of prior to forwarding to the state laboratory. This discrepancy was noted as a program variance in last years report.

420DC-03_24 doc 4-2

Section 5 LAND USE CENSUS Diablo Canyon Power Plant (DCPP) radiation protection personnel conducted a land use census in the vicinity of DCPP for 2002. The land use census is based on Nuclear Regulatory Commission (NRC),

Regulatory Guide 4.8, "Environmental Technical Specifications for Nuclear Power Plants", and required by DCPP Program Directive CY2, "Radiological Monitoring and Controls Program." The census is conducted at least once per year during the growing season for the Diablo Canyon environs.

The land use census identifies the nearest milk animal and broadleaf producing garden greater than 50 square meters (500 square feet) in each of the landward meteorological sectors within a distance of 8 kilometers (5 miles) of the plant. DCPP IDAP RP1.ID 11, "Environmental Radiological Monitoring Program", requires that the nearest residence be identified in each of the landward sectors within a distance of 5 miles.

The land use census was performed by directly contacting individual landowners / tenants and by aerial surveys. The landowners or tenants were contacted between September 26th and October 9h, 2002. The aerial survey was performed on September 3 0Q, 2002.

The census identified one household garden greater than 50 square meters (500 square feet) that produces broadleaf vegetation in the East sector at 4.5 miles from DCPP Unit 1. No milk animals were identified within the first 5 miles of any sector. Much of the area surrounding the plant site is used for rotational cattle grazing by two separate cattle companies. Various numbers of cattle are sold to market at the end of each year. One cattle operation utilizes the land north of the plant site. A second cattle operation utilizes the land south of the plant site. The rancher for the northern cattle operation slaughters about 2 cattle per year for personal consumption. Goats were used for weed abatement for approximately 6 months within the area surrounding the plant site. The rancher from the northern operation owns these goats and also slaughters about 2 goats per year for personal consumption. During 2002, approximately 100 goats are to be sold in mass-market auction. A farm is located on the coastal plateau, along the site access road, in the east-southeast (ESE) sector. The farm starts at approximately 3.3 miles and extends to 4.5 miles from the plant. This commercial farm produces 75% legumes (sugar peas) and 25% cereal grass (oat hay).

A total of 13 residences were identified within the 5-mile radius of the plant that were confirmed or appear to be occupied during 2002. Two abandoned structures are located at 1.6 miles north-northwest 420DC-03_24.doc 5:1

(NNW) of the plant. The nearest residence, relative to all sectors, is a small trailer 1.2 miles northwest (NW) of the plant (occupied approximately 1 month per year). Ranchers use this trailer during cattle round-ups. Table B-5 summarizes the results of the land use census and Figure 3 shows the locations of the farm, garden, and residences in the vicinity of DCPP.

420DC-03_24 doc 5-2

NW UNITS 1 AND 2 DIABLO CANYON SITE E Gardens or Farm A Residences N

0 1

2 3

4 5

SCALE IN MILES 970338 anduse 02p Figure 3. Units I and 2 Diablo Canyon Power Plant Land Use Census.

420DC-03_24.doc 5-3

Section 6 RESULTS AND DISCUSSION The results for the DCPP REMP are listed in Appendices A and B. The +/- terms listed in the tables in the appendices are the uncertainties within the 95 percent confidence level. The tables in Appendix A present summaries of the results, formatted in accordance with current NRC guidelines (NRC Branch Technical Position, Revision 1, November 1979). Appendix A also includes the results of the performance evaluation studies. The tables in Appendix B contain analytical results of the individual samples which were supplied to the state laboratory. The LLD for the nuclides of interest listed in Table 3 were met for all analyses performed except for those samples listed in Table B-6. The LLDs were not met for these three water samples due to abnormally long time between sample collection and analysis. This delay in analysis made the LLDs for short half life radionuclides (iodine-131 and bariumllanihinum-140) unachievable. A higher priority has been placed on water samples requiring detection of short half life radionuclides to prevent recurrence of not meeting LLDs for these short half life radionuclides. The analytical results for the different sample types are discussed below. This discussion includes results from supplemental samples collected and analyzed. The reporting levels for radioactivity concentrations in environmental samples are listed in Table 4, page 6-8.-

AIRBORNE RADIOACTIVITY Air particulates and radioiodine samples were collected weekly from six indicator stations (MT1, 0S2, 1S, 7D1, 8S1, and 8S2) in the DCPP environs and one control station (5F1). A total of 364 air particulate filters and 364 iodine cartridges were collected and analyzed. The data collected for the air-sampling program is summarized in Appendix A, Table A-i.

Air Particulates Gross beta activity was detected in every weekly air particulate sample collected from all indicator and control stations. The raige for the indicator stations was 0.004 - 0.043 pCilm3 with a mean of 0.0 14 pCii

3. The range for the control station was 0.004 - 0.059 pCi/i 3 with a mean of 0.015 pCi/m3.

Comparison of the data showed that the mean values of gross beta activities for the indicator stations were consistent with those obtained for the control station. The gross beta activities detected at the air sampling stations are tabulated in Appendix B, Table B-3 and shown in Figure 4.

Gamma isotopic analyses were performed on quarterly composites of the air particulate filters from each station. All samples collected during the year contained only naturally occurring radioactivity.

420DC-03_24.doc 6-1

Station OS2 Air Particulate Gross Beta Activity (2002)

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Station 5F1 Air Particulate Gross Beta Activity (2002)

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990308102-SF1 and 7D1 420DC-03_24.doc 6-3

Station 8Si Air Particulate Gross Beta Activity (2002)

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990308102-8S1 and 8S2 420DC-03_24 doc 64

Station MTI Air Particulate Gross Beta Activity (2002)

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420DC-03_24 doc 5

Radioiodine A total of 364 iodine cartridges were analyzed for iodine-131. No iodine-131 was detected in any iodine cartridge during the year.

DIRECT RADIATION TLD badges from 31 stations were collected on a quarterly basis and processed. A total of 372 TLD badges were distributed to field locations (three TLD badges at each location) and processed. The quarterly average exposure level from all indicator stations ranged from 9.1 - 23.6 mR/qtr with a mean of 16.0 mR/qtr. The exposure level at the control station SF1 ranged from 15.2 - 18.0 mR/qtr with a mean of 16.7 mRlqtr. The exposure levels for 2002 did not differ significantly from the previous year, or from the pre-operational data. They indicate that the operation of DCPP did not significantly affect the ambient radiation exposure levels in the plant environs. See Appendix A, Table A-2, for the TLD data summary and Appendix B, Table B-4, for the individual station data.

WATER SAMPLES A total of 60 water samples (24 drinking water samples, 36 surface water samples) were collected and analyzed. The results of the water samples collected from the indicator and control stations are summarized in Appendix A, Tables A-3 (a) and (b).

Gamma isotopic and tritium analyses were performed on all water samples. Tritium was detected in one surface water samples from DCM. The tritium activity level detected in this sample was below the reporting level. This sample was collected during a routine release from the plant and does not represent the average tritium level in Diablo Cove.

Iodine-13 1 analysis was also performed on drinking water. Iodine-13 1 was not detected in any drinking water samples. The water sample data indicates that the operation of DCPP did not have any significant impact on water in the plant environs.

MARINE BIOLOGICAL AND SEDIMENT SAMPLES A total of 91 marine biological and sediment samples were collected from the indicator, control and supplemental stations. They included 36 fish samples, 13 mussel samples, 40 algae samples, and 2 ocean bottom sediment samples. Table B-7 lists the marine samples collected for 2002. The results obtained from the indicator stations and control station are summarized in Appendix A, Tables A-4 to A-7. The individual samples and their detected nuclides are listed in Appendix B, Table B-2.

420DC-03 24.doc 6-6

Abalone Red abalone were not collected in 2002. It is unlikely that abalone will be collected at DCPP in the future as the California Marine, Sport Fishing Regulations were amended on December 8, 2000 to state that no abalone can be taken south of San Francisco Bay.

California Mussels A total of 13 mussel samples were collected from stations DCM, 7C2, PON and POS. All samples contained only naturally occurring radioactivity.

Fish A total of 36 fish samples from stations DCM, 7C2, PON, POS and 7D3 were analyzed. All samples contained only naturally occurring radioactivity' The operation of DCPP had no detectable impact on fish in the plant environs.

Algae A total of 40 algae samples were collected from stations DCM, 7C2, PON, and POS. These samples are supplemental to the REMP. Three samples collected from DCM contained a small, but detectable level of cobalt-58, and one of these samples also contained a small level of cobalt-60. All other samples contained only naturally occurring radioactivity.

Sediment An annual sample of ocean bottom sediment was collected from stations DCM and 7C2. Only naturally occurring radioactivity was detected in these samples. The data indicated no increasing trend in isotope concentration. The operation of DCPP had no detectable impact in ocean sediment in the plant environs.

FOOD CROPS A total of 34 vegetative samples were collected from four supplemental stations: Cal Poly Farm (station 5F2), Kawaoka Farm (station 7Gl), Mello Farm (station 7C1), and a household garden (station 6C 1). All of the samples analyzed contained only naturally occurring radioactivity. The operation of DCPP had no detectable impact on food crops in the plant environs.

MILK A total of 12 monthly milk samples were collected from Cal Poly Farm, station 5F2. Iodine-131 was not detected in any of the samples. The samples contained only natural radioactivity. The operation of the plant had no detectable impact on this environmental medium.

420DC-03_24.doc 6-7

Table 4 Reporting Levels for Radioactivity Concentrations in Environmental Samples Airborne Particulate Water or Gas Fish Milk Food Products Analysis (pCi/L)

(pCilm3)

(pCi/ka, wet)

(pCi/L)

(pCi/kg, wet)

H-3 20,000(a)

Mn-54 1,000 30,000 Fe-59 400 10,000 Co-58 1,000 30,000 Co-60 300 10,000 Zn-65 300 20,000 Zr-Nb-95 400 1-131 2(b) 0.9 3

100 Cs-134 30 10 1,000 60 1,000 Cs-137 50 20 2,000 70 2,000 Ba-La-140 200 300 Table Notation:

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

(b) If no drinking water pathway exists, a value of 20 pCI/L may be used.

420DC-03_24 doc 6-8

Section 7 COMPARISON OF PREOPERATIONAL AND OPERATIONAL DATA Routine (annual) comparisons are performed on data collected for the radiological environmental monitoring program with the data collected during the preoperational period. DCPP began commercial operation in 1985. The preoperational data from the period from 1981 to 1984 arc used as the preoperational baseline.

The data is analyzed using the combined Shewart-CUSUM control chart technique in which log-transformed radioactivity concentration or radiation exposure levels are compared over time. This technique assumes that the data distribution is log-normally distributed, and the log-transformed data is used'in the control charts. First the data are standardized by subtracting the overall mean radioactivity level for the station from the current observation and then dividing by the overall standard deviation for that station. The control charts are used to test whether fluctuations in the standardized data are random or from a change in the concentration of a particular parameter. For air particulate gross beta activity and TLD measurements, the standardized difference between the indicator and control stations is trended on these charts.

Plant related radioactivity was detected in three sample media during 2002. Tritium was detected in a seawater sample collected from DCM. Co-58 was measured in two intertidal and one subtidal algae samples collected from DCM. The Shewart-CUSUM control charts for tritium in seawater, Co-58 in algae, Co-60 in algae, air particulate gross beta activity, and TLD measurements are shown and discussed below. All other CUSUM charts showed basically flat data since the last time that the radioactivity type and sampled media contained a detectible result. Detectible results noted in the past are described in the past annual report(s) in which the detectible result was initially noted.

AIRBORNE RADIOACTIVITY Air Particulates The Shewart-CUSUM control chart for gross beta activities in air particulates (see Figure 5) showed that there is no increasing trend during the operational years (1985-2002), and that the range during the operational period remained within the preoperational range (1981-1984). The high gross beta activity in 1981 was attributed to fallout from Chinese atmospheric nuclear weapons testing.

420DC-03_24.doc 7-1

DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Report - 2002 Figure 5 Control Chart for Air Particulate Filters - Difference Between Indicator and Control Station Annual Means Standard Deviations 8-6-

cusuU47~t 2-0 Background Men E

-2

-4 CUS U volc~u

-E a2 S t a n d c r d iz e d '

JAN80 JAN84 JAN88 JAN92 JAN96 JAN00 JAN04 DATE TECHNICAL AND ECOLOGICAL SERVICES Health Phvslcs nit 420DC-03_24 doc 7-2 III

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In 2002, only naturally occurring radioactivity was detected. The mean concentration of gross beta activity of the indicator stations was comparable to those of the control station. It can be concluded that the plant operations had no detectible impact on the'air particulate medium.

DIRECT RADIATION The control chart for direct radiation measured by TLDs (see Figure 6) showed that there has been no increasing trend during the operational years. The current control chart shows the effect of changing the control station from Morro Bay Power Plant to 5F1 in San Luis Obispo in 1996. The control station was changed at that time because the Morro Bay Power Plant ceased to be a PG&E property.

WATER SAMPLES Surface Water (Seawater)

During the preoperational period, only naturally occurring radioactivity was detected in seawater-,

samples. Several times during the operational period, tritium has been measured at station DCM. During 2002, tritium was detected in one water sample collected from DCM. The current control chart for tritium in seawater from DCM is shown as Figure 7. The event of detectible tritium activity during 2002 was below reportable level. The seawater sample which contained more than the detection level of tritium was collected from DCM. This sample was collected concurrent with a liquid release from the power plant. Consequently, the detected level of tritium does not represent the ambient level of tritium within Diablo Cove.

ALGAE SAMPLES Algae sampling is not a REMP requirement and is therefore considered a supplemental sample. There is no reporting requirement for radioactivity levels in algae. Two species of algae are normally collected from DCM quarterly when available. Several times during the operational period small concentrations of various plant related radioactivity have been detected in the algae. These radioactivity concentrations detected have been random in the past so one can conclude that there is no increasing trend in radioactivity concentrations in algae from Diablo Cove. Co-58 was measured in two Iridaea samples and one Giant Kelp sample from DCM during 2002. In addition, Co-60 was detected in one of the Iridaea samples. The control chart for Co-58 in algae (Iridaea) is shown as Figure 8. The control chart for Co-58 in kelp blades is shown as Figure 9a. The control chart for Co-60 in algae (Iridaea) is shown as Figure 9f.

420DC-03_24 doc 7-3

DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Report - 2002 Figure 6. Control Chart for TLD Data - Difference Between Indicator and Control Station Annual Means Standard Deviations 8

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DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Re ort -2002 Figure 8 Control Chart for Co-58 Levels in Algae-Station DCM Standard Deviations 8

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DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Report -2002 Figure 9f. Control Chart for Co-60 Levels in Algae-Station DCM Standard Deviations 8-6-

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Section 8 PROGRAM VARIANCE The DCPP REMP includes both required and supplemental samples. This section describes the variances with the required samples.

AIRBORNE RADIOACTIVITY The mean percent availability for all on-site and off-site samplers was 99.8 percent. That is, on average, all samplers were up and running 99.8 percent of the time. At station 8S2, the sampler malfunctioned during the sampling period 1/9/2002-1/16/2002. Approximately 66 hours7.638889e-4 days <br />0.0183 hours <br />1.09127e-4 weeks <br />2.5113e-5 months <br /> of sampling was lost. This sampler was also shut down for service to an electrical system for approximately 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> later in the first quarter and for several hours due to weather related power outage in the fourth quarter. At station 7D 1, the sampler was not functioning for approximately 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> due to a power outage during the second quarter. The sampler at station MT1 was out of service for approximately 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> in the fourth quarter due to a lightening strike at the Met Tower. Several on-site air samplers (lSi, 8S1, 8S2, and OS2) experienced power outages due to weather during the last week of the year.

MARINE AND TERRESTRIAL SAMPLES All marine and terrestrial samples were collected as scheduled except for the following: intertidal samples from stations POS and PON were not collected during the 4t quarter due to poor tidal conditions. Vegetation samples were not collected from station 7C1 and 5F2 for January and February due to lack of crops during these collection times. In addition, a vegetation sample was not collected from station 7C1 during July due to immature crops at that location As mentioned earlier, the California Department of Fish and Game has issued regulations prohibiting the collection of abalone along the central and southern coast of California. PG&E considers it unlikely that collection of abalone will be allowed in the DCPP environs in the near future. Note that the sampling of abalone is supplemental to the REMP.

SUPPLEMENTAL SAMPLES During December, duplicate samples of beach sand were obtained from Avila Beach as a supplement to the routine sampling program. Each of these samples contained detectible activity of cesium-137 which is to be expected due to global fallout resulting from atmospheric bomb testing during the 1950's and 420DC-03_24.doc

.8-1

1960's. The detected activity was approximately 14 picoCuries per kilogram which is within the range of activity expected in soil and sand samples throughout the country.

420DC-03_24 doc 8-2

Section 9 REFERENCES

1. DCPP Interdepartmental Administrative Procedure (IDAP), RP1.ID 1, "Environmental Radiological Monitoring Procedure."

2. NRC Branch Technical Position, Revision 1, November 1979.

3. DCPP Program Directive, CY2, "Radiological Monitoring and Controls Program."

420DC-03_24 doc 9-1

Appendix A ENVIRONMENTAL RADIATION MONITORING PROGRAM SUMMARIES 420DC-03_24.doc

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F-Name of Facility Diablo Canyon Power Plant Docket No.

50-275 and 50-323 1/1/02 - 12/31/02 Location of Facility San Luis Obispo, California (County, State)

Report Period Medium or Pathway Type and Total Lower Limit Indicator with All Indicator All Control Sampled Number of of Highest Annual Mean Locations Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Range(b)

Occurrences Airborne Cartridg~e (pCi/m3)

None detected, None detected 0

(364)

Air Particulates Gross'Beta Sta. 8S2 1.4E-2 1.4E-2(312/312) 1.5E-2(52/52) 0 (364) 1.1 mi., 128° 4.0E-3-4.2E-2 4.0E-3-4.3E-2 4.0E-3-5.9E-2 Gamma'Isotopic None detected None detected 0

(364)

Table Notation:

(a) Unless specified, all required LLDs were met in accordance with Table 3.

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

ND Radionuclides of interest other than naturally occurring were not detected.

420DC-03_24 doc A-1

Table A-2 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California Docket No.

50-275 and 50-323 Report Period 1/1/02-12/31/02 (County, State)

Medium or Pathway Type and Total Lower Limit Indicator with All Indicator All Control Sampled Number of of Highest Annual Mean Locations Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Range(b)

Occurrences Direct TLD Packet(C) 3 mRlqtr Sta. 5S1 Sta. SF1 0

radiation (mR)

(372) 0.4 mi, 580 22.5 mR/qtr 16.0 mR/qtr 16.7 mR/qtr (12/12)

(360/360)

(12/12) 20.6-23.6 mR/qtr 9.1-23.6 mR/qtr 15.2-18.0 mR/qtr 90.0 mR/yr 64.0 mR/yr 66.8 mR/yr (360/360) 38.6-90.0 mR/yr Table Notation.

(a)

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

(c) 93 TLD packets are distributed quarterly at 31 locations.

420DC-03_24.doc A-2 I

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, Name of Facility

'Location of Facility Diablo Canyon Power Plant San Luis Obispo, California (County, State)

Docket No.

Report Period 50-275 and 50-323 1/1/02-12/31/02 Medium or Pathway Type and Total Lower Limit Indicator with All Indicator All Control Sampled Number of of Highest Annual Mean Locations Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Mean(b)

Reportable Measurement)

. Performed (LLD) and Direction Range(b)

Range(b) i-Range(b)

Occurrences Surface water Gamma Sta. )CM' S'ta. 7C2 0

(pCiJL)

Isotopic (36)

Sta. OUT 54Mn None detected None detected 59 Ve None detected None detected

'Co

,None detected

• None detected

°Co None detected None detected loc None detected None detected

,Z None detected None detected r2lE2(3/36)

None detected None detected

. -Cs None detected None detected 137Cs.,

None detected None detected X. 4Ba-La

,4.73E1 (2/36)

None detected None detected None detected None detected Tritium Analysis (36)

Sta. DCM l

3H 0 2mi, 270° 3.48E2(i/i2) 3.48E2(1/12)

None detected 0

Table Notation:

(a) Unless specified, all required LLDs were met in accordance with Table 3.

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

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420DC-03_24.doc A-3

Table A-3b Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California (County, State)

Docket No.

50-275 and 50-323 Report Period 1/1/02-12/31/02 Medium or Type and Total Lower Limit Pathway Sampled Number of Of Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Occurrences Drinking water Tritium (24)

Sta. 5S2, DWI None detected 0

(pCi/L)

Gamma Isotopic (24) 0 5M4 n None detected 59Fe None detected 58co None detected 61Co None detected 65zn None detected 95Zr None detected 95Nb None detected 1311 None detected 134cS None detected 137cs None detected 401Ba-La None detected Table Notation (a) Unless specified, all required LLDs were met in accordance with Table 3.

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

420DC-03_24.doc A-4 i

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Name of Facility Location of Facility Diablo Canyon Power Plant

- San Luis Obispo, California Docket No.

Report Period 50-275 and 50-323 1/1/02-12/31/02.

(County, State)

Medium or Pathway Type and Total Lower Limit Indicator Indicator All Control Sampled Number of Of Location(C)

Locations Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Occurrences Mussels Gamma Isotopic (8)

Sta. DCM Sta. DCM Sta. 7C2 0

(pCi/kg original) 0.2 mi., 2700 None detected None detected 59Fe None detected None detected 58co None detected None detected Co

.None detected None detected 95Nb

6.

None detected None detected I34c~

None detected None detected 9537Cs

-N None detected None detected

"'I None detected None detected Table Notation:

(a) Unless specified, all required LLDs were met in accordance with Table 3.

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

(c) Only one station location for this sample type.

420DC-03_24.doc A-5

Table A-5 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California (County, State)

Docket No.

Report Period 50-275 and 50-323 1/1/02-12/31/02 Table Notation.

(a) Unless specified, all required LLDs were met in accordance with Table 3.

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

(c) Only one station location for this sample type 420DC-03_24.doe A-6 lI I

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Fv-r r-Table A-6 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.

Report Period 50-275 and 50-323 1/1/02-12/31/02 1,.

Location of Facility San Luis Obispo, California' (County, State)

Medium or Pathway Type and Total Lower Limit Indicator Indicator All Control Sampled Number of of Location(c)

Locations Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Occurrences Algae*

Gamma Isotopic (24)

Sta. DCM Sta. DCM -

Sta: 7C2 0

(pCi/kg original) 0.2 mi., 270° 54Mn None detected None detected 59Fe None detected None detected Co None detected None detected 58Co x

40.3(3/28)

None detected 19.8-68.4 60Co 9.7(1/28)

None detected None detected None detected

-iomAg None detected None detected

'37Cs None detected None detected Table Notation:

(a) Unless specified, all required LLDs were met in accordance with Table 3.

(b) Mean and range based upon detectable measurenients'6nly. Fraction of detectable measurements at specified locations is indicated in parenthesis e g., (10/12) means 10 samples out of 12 collected showed activity.

(c) Only one station location for this sample type.

These samples are supplemental samples.

420DC-03_24 doc A-7

Table A-7 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California (County, State)

Docket No.

Report Period 50-275 and 50-323 1/1/02-12/31/02 Medium or Pathway Type anid Total Lower Limit Indicator Indicator All Control Sampled Number of Of Location(c)

Locations Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Occurrences Sediment Gamma Isotopic (2)

Sta. DCM Sta. DCM Sta. 7C2 0

(pCi/kg dry) 0.2 mi., 2700 4Mn None detected None detected 59Fe None detected None detected 58co None detected None detected 60Co None detected None detected 65Zn None detected None detected None detected None detected 134cS None detected None detected Table Notation.

(a) Unless specified, all required LLDs were met in accordance with Table 3.

(b) Mean and range based upon detectable measurements only Fraction of detectable measurements at specified locations is indicated in parenthesis e g, (10/12) means 10 samples out of 12 collected showed activity (c) Only one station location for this sample type.

420DC-03_24 doc A-8 I

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(- --

[

f---

F--

F ---

[ -

FFI -

Table A-8 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility _

Diablo Canyon Power Plant San Luis Obispo, California Docket No.

Report Period 50-275 and 50-323 1/1/02-12/31/02 (County, State)

Medium or Pathway Type and Total Lower Limit Location with Sampled

-Number of of-Highest Annual Mean Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Occurrences Food crops*

Gamma Sta. 7CI, 7GI, 5F2,.

0 (pCi/kg original)

Isotopic (34) 6CI

\\

'None detected 134Cs§ None detected 37cs

.None detected Table Notation:

(a) Unless specified, all required LLDs were met in accordance with Table 3.

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

These samples are supplemental samples.

420DC-03_24.doc A-9

Table A-9 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.

50-275 and 50-323 Location of Facility _ San Luis Obispo, California Report Period 1/1/02-12/31/02 (County, State)

Medium or Pathway Type and Total Lower Limit l

Sampled Number of of Location(')

Number of (Unit of Analyses Detection(a)

Name, Distance Mcan(b)

Reportable Measurement)

Performed (LLD)

And Direction Range(b)

Occurrences Milk*

131I (12)

Sta 5F2, 12.6 mi, 60° None detected 0

(pCi/L)

Gamma Isotopic (12) 0 134cS None detected 137cs None detected

'40Ba-La None detected

'Fable Notation' (a) Unless specified, all required LLDs were met in accordance with Table 3.

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

(c) Only one station location for this sample type ND' Radionuclides of interest other than naturally occurring were not detected These samples are supplemental samples.

420DC-03_24 doe A-10 I

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Table A-10 Analytics Performance Evaluation Program(')

Sample/Analysis Radionuclide Month TES Analytics Ratio Evaluationib)

Milk/Gamma I-131 December 84 86

.98 Agreement Ce-141 December 112 111 1.01 Agreement Cr-51 December 353 346 1.02 Agreement Cs-134 December 90 99

.91 Agreement Cs-137 December -

233 220 1.06 Agreement Mn-54 December 146 142 1.03 Agreement Fe-59 December 79 72 1.10 Agreement Zn-65 December 185 178 1.04 Agreement Co-60 December 165 164 1.01 Agreement Co-58 December 139 139 1.00 Agreement Water/Gamma Cr-51 May 185 218

.85 Agreement Mn-54

-May 100 88 1.14 Agreement Co-58 May 93 93 1.00 Agreement Fe-59 May Not Reported 75 Co-60 May 116 115 1.01 Agreement Zn-65 May 191 166 1.15 Agreement Cs-134 May 98 111

.88 Agreement Cs-137 May 82 84

.98 Agreement Ce-141 May 81 83

.98 Agreement 1-131 May 94 94 1.00 Agreement Soil/Gamma Mn-54 May

.127

.129

.98 Agreement Co-60 May

.174

.168 1.04 Agreement Zn-65 May

.266

.243 1.09 Agreement Cs-134 May

.134

.163

.82 Agreement Cs-137 May

.223

.208 1.07 Agreement Ce-141 May

.129

.122 1.06 Agreement Cr-51 May

.354

.318 1.11 Agreement Co-58 May

.124

.135

.92 Agreement Fe-59 May

.104

.109

.95 Agreement Vegetation/Gamma Ce-141 December

.225

.188 1.20 Agreement Cr-51 December

.625

.587 1.06 Agreement Cs-134 December

.166

.168

.99 Agreement Cs-137 December

'.418

.373 1.12 Agreement Co-58 December

.244

.235 1.04 Agreement Mn-54 December

.260

.241 1.08 Agreement

- Fe-59 December

.142

.122 1.16

- Agreement Zn-65 December

.320

.303 1.06 Agreement Co-60 December

.313

.279 1.12 Agreement Cartridge/Gamma I-131 May

- 92 92 1.00 Agreement Water/Alpha Gross Alpha May 49 40 1.23 Agreement Water/Beta Gross Beta May 255 280

.91 Agreement Water/Tritium Tritium May 7083 6970 1.02 Agreement Particulate Filter Alpha December 56 66

.85 Agreement Particulate Filter Beta December 154 168

.92 Agreement Table Notation:

(a) All of the values shown are relative; therefore, the units for total activity or concentration levels are not shown.

(b) Agreement criteria from NRC Inspection Manual, Procedure 84750.

420DC-03_24 doc A-1 I

Appendix B ANALYTICAL RESULTS 420DC-03_24.doc

i l I 1-1- __

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t-~

f FI I

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I.~

Table B-1 Diablo Canyon Power Plant 2002 Annual Report State Cross-Check Results(a)

Gamma Activity K-40 Activity H-3 Sample pCi/L pCi/L Activity 1-131 Activity Sample Station No.

Collection Date Original Original pCi/L pCi/L Drinking Water DWI 02A37 01/24/2002 ND 16 +/- 43 ND ND 02A89 02/19/2002 ND 29 +/- 27 ND ND 02B89 03/20/2002 ND 29 +/- 10 ND ND 02C73 04/23/2002 ND ND ND ND 02D40 05/21/2002 ND ND ND ND 02E45 06/19/2002 ND ND ND ND 02F13 07/25/2002 ND ND ND ND 02F75 08/20/2002 ND ND ND ND 02G52 09/17/2002 ND ND ND ND 02H38 10/22/2002 ND 16 31 ND ND' 02142 11/19/2002 ND 4

48 ND ND 02J03 12/17/2002 ND 90+/- 37 ND ND Milk 5F2 02A38 01/24/2002 ND 1374 155 ND 02A90 02/19/2002 ND 1337+/- 165 ND 02B90 63/20/2002 ND 1389+/- 137 ND 02C74 04/23/2002 ND 1447'+/- 132 ND 02D41 05/21/2002 ND 1443 +/- 137 ND 02E46 06/19/2002 ND 1530 +/- 155 ND

,02F08 07/23/2002 ND 1481 +/- 148 ND 02F76 08/20/2002 ND 1511'+/- 155 ND 02G53 09/17/2002 ND

-1374 +/- 128 ND 021139 10/22/2002

-ND 1396+/- 136 ND 02143 11/19/2002 ND 1420+/- 138 ND 02J04 12/17/2002 ND 1547+/- 144 ND Table NotationsslD RarIa ab (a)

Airborne radioisotope analyses for stations 5F1 and 7D1 are located in Table B-3. Direct Radiation measurements for stations MTI, 4DI, 5F3, 7D1, and 7C1 are located in Table BA.

420DC-03_24 doc B-1

Table B-1 (Continued)

Diablo Canyon Power Plant 2002 Annual Report State Cross-Check Results Gamma Activity K-40 Activity 11-3 Sample pCi/L pCi/L Activity 1-131 Activity Sample Station No.

Collection Date Original Original pCi/L pCi/L Outfall Water OUT 02A35 01/24/2002 ND 322+/- 53 ND 02A87 02/19/2002 ND 364 +/- 64 ND 02B87 03/20/2002 ND 366 +/-51 ND 02C71 04/23/2002 ND 337 +/- 57 ND 02D38 05/21/2002 ND 338 +/- 58 ND 02E43 06/19/2002 ND 336 +/- 73 ND 02F11 07/25/2002 ND 330 +/- 42 ND 02F73 08/20/2002 ND 341 +/- 45 ND 02G50 09/17/2002 ND 302 +/- 77 ND 02H36 10/22/2002 ND 335 +/- 41 ND 02140 11/19/2002 ND 360+/- 75 ND 02J01 12/17/2002 ND 320+/- 76 ND Drinking Water 5S2 02A36 01/24/2002 ND ND ND ND 02A88 02/19/2002 ND ND ND ND 02B88 03/20/2002 ND ND ND ND 02C72 04/23/2002 ND ND ND ND 02D39 05/21/2002 ND ND ND ND 02E44 06/19/2002 ND ND ND ND 02F112 07/25/2002 ND ND ND ND 02F74 08/20/2002 ND 6+/- 27 ND ND 02G51 09/17/2002 ND 16+/-31 ND ND 02H37 10/22/2002 ND ND ND ND 02141 11/19/2002 ND ND ND ND 02J02 12/17/2002 ND ND ND ND 420DC-03_24 doc B-2 iI I{I II I

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I I '

1-1--

t-I 1--

1 I' 1 -

I -

f----

I.-

' f-.-

Table B-1 (Continued)

Diablo Canyon Power Plant 2002 Annual Report State Cross-Check Results I-----r

[

Gamma Activity K-40 Activity 11-3 Sample pCi/L pCiUL Activity 1-131 Activity Sample Station No.

Collection Date Original Original pCiUL pCi/L Giant Kelp(b)

DCM 02B20 03/01/2002 ND 9541 +/- 1245 02D59 05/22/2002 ND 7545 + 780 02F29 07/30/2002 Co-58 33+/-14 8820 +/- 817 02H91 10/29/2002 ND 8781 +/- 817 Vegetable Greens(b) 7G1 02C15 04/03/2002 Be-7 191 +/- 89 3971 +/- 391 02D07 05/06/2002 Be-7 139.+/- 102 5305 +/- 524 02F54 08/06/2002 ND 4181 +/-416 02159 12/03/2002 ND 3359 +/-366 Fish(b)

DCM 02A65 01/30/2002 ND 4597 +/- 665 02D68 04/12/2002 ND 4631 543 02G34 09/05/2602 ND 4239 +/-540 02J58 01/14/2003 ND 4259 +/-628 Sediment(c)

DCM 02J57 01/14/2003 ND 9082 +/- 913 Table Notation:

(b) Results reported in pCi/kg original sample.

(c)

Results reported in pCi/kg dry sample.

.1 0

f B-3 420DC-03_24.doc

Table B-2 Diablo Canyon Power Plant 2002 Annual Report Marine and Terrestrial Sample Data Detected Nuclides (Nonnaturally Occurring) - pCi/l Water pCi/kg Algae Sta.

Collection Sam.

Description No.

Date No.

58co 60co 54Mn 137cs 311 Iridaea DCM 02/25/02 02B29 1.98E1+/-1.09EI Iridaea DCM 05/16/02 02D71 6 84EI+/-1.12E1 9.7E0+/-4.6E0 Giant Kelp Blade DCM 07/30/02 02F29 3.26E1+/-l.39EI Surface Water (Seawater)

DCM 07/30/02 02F24 3 48E2+/-1.85E2 420DC-03_24 doc I

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Table B-3 Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station OS2 (pCi/M3)

Gross Beta

- Collection Period Volume(m 3)

Counting Date Activity 2Sigma

'Gamma Scan 01/02/02-01109/02 01/09/02-01/1 6/02 01/16/02-01/23102 01/23/02-01/30/02 01/30/02-02/06/02 02/06/02-02113/02 02/13/02-02/20/02 02/20/02-02/27/02 02/27/02-03106/02 03/06102-03/13/02 03/1 3/02-03/20/02 03120/02-03127/02 03/27/02-04/03/02 04/03/02-04/10/02 04/10/02-04/17/02 04/17/02-04/24/02 04/24/02-05/01/02 05/01/02-05/08/02 05/08/02-05/15/02 05/1 5/02-05/22/02 05/22/02-05/29/02 05/29/02-06/05/02 06/05/02-06/12/02 06/12/02-06/19/02 06/19/02-06/26/02 06/26/02-07/03/02 07/03102-07/10/02 07/10/02-07/17/02 07/17/02-07/24/02 07/24/02-07/31/02 07/31/02-08/07/02 08/07/02-08/14/02 08/14/02-08/21/02 08/21/02-08/28/02 08/28/02-09104/02 09/04/02-09/11/02 09/11/02-09118/02 09/18/02-09/25/02 492.8 481.2 448.8 470.5 443.9 440.4 434.2 443.8 425.8 438.2 459.7-436.2 436.0 436.3 465.7 464.3 402.3 406.2 416.3 426.2 418.5 415.9 473.1 440.3 434.6 449.6 454.8 434.6 448.8 432.2 405.6' 449.7 513.4 536.9 546.8 551.9 402.6 435.2 01/17102 01/23/02 01/30/02 02/05/02 02/14/02 02/21/02 02/22/02 03/08/02 03/08/02

'03/20/02 03/23(02 04/03/02 05/05102 04/19/02 04/24/02 04/30/02 05/09/02 05/14/02 05/21/02 05/28/02 06/07/02 06/14/02 06/16102 06/23102 07/12/02 07/13/02 07/20/02 08/02102 08/03/02

'08/13/02 08/14/02 08/20/02 08/28/02 09/13/02 09/13/02 09/19/02 09/24/02 10/01/02

.013

.028

.016

.008

.022

.016

.013

.012

.028

.009

.011 013

.015

.010

.007

.011

.008

.015

.039

.006

.009

.006

.007

.009

.004

.004

.004

.005

.005

.011

.005

.012

.008

.007

.010

.011

.006

.009

.002

.003

.002

.001

.002

.002

.002

.001

.003

.001

.001-

.002

.002 001

-:001

.001

.001

.002

.004:

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.002

.001

.001

.001

.001

.001

.001 420DC-03_24.doc B-5

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station 0S2 (pCi/m3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 09/25/02-10/02/02 466 8 10/20/02

.013

.001 10/02/02-10/09/02 475.9 10/20/02

.020

.002 10/09/02-10/16/02 364 0 10/26/02

.023

.002 10/16/02-10/23/02 402 4 10/26/02

.022

.002 10/23/02-10/30/02 417.2 11/18/02

.030

.003 10130/02-11/06/02 443.7 11/19/02

.033

.003 11106/02-11/13/02 452.2 11/23/02 008 001 11/13/02-11/20/02 460.0 11/27/02 023 002 11/20/02-11/27/02 475.6 12/12/02

.035 003 11/27102-12/04102 488.3 12/12/02

.037 004 12/04102-12111/02 510.8 12/17/02 036 003 12111102-12118/02 456.8 12/31/02 010 001 12/18102-12124102 391.1 01/01/03 005

.001 12124102-12131/02 455.7 01/08/03 010

.001 Gamma Activity On Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/M3) 01/02102-04/03/02 5/6/02 ND 04/03/02-07/03/02 7/23/02 ND 07/03/02-10/02102 10/23/02 ND 10/02/02-12/31/02 1/28/03 ND Table Notation ND Radionuclides of interest other than naturally occurring were not detected.

420DC-03_24 doc B-6

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station ISI (pCi/n13)

Counting Gross Beta Collection Period

, Volume (m3)

Date Activity 2Sigma Gamma Scan 01/02/02-01/09/02 01/09/02-01/16/02 01/16/02-01/23/02 01/23/02-01/30/02 01/30102-02106/02 02/06102-02/13/02 02113102-02/20/02 02/20102-02/27/02 02127/02-03/06102 03106/02-03/13/02 03/13102-03/20102 03/20102-03/27/02 03/27/02-04103/02 04/03/02-04/1 0/02 04110/02-04/17/02 04/17/02-04/24/02 04/24102-05/01/02 05/01/02-05/08/02 05/08/02-05/15/02 05/15/02-05/22102 05/22/02-05/29/02 05/29102-06/05/02 06/05/02-06/12/02 06/1 2/02-06/1 9/02 06/19/02-06/26/02 06/26/02-07/03/02 07103/02-07/10/02 07/10/02-07/17/02 07/17/02-07/24/02 07/24/02-07/31/02 07/31/02-08/07/02 08/07/02-08/14/02 08/14/02-08/21/02 08/21/02-08/28/02 08/28/02-09104/02 09104/02-09111102 09/11/02-09/18/02 09/18/02-09125/02 463.8 470.7 375.7 456.5 454.3 461.8 464.9 460.4 446.3 456.5 474.2 463.2 473.2 465.8 375.9-435.2 379.5 424.7 445.8 454.5 446.8 436.8 456.3 438.3 433.5 455.2 449.8 440.7 478.9 457.7 477.3 465.7 463.7 478.3 470.4 462.6 467.8 458.4 01/17/02 01/23/02 01130/02 02/05/02 02/12102 02/21/02 02/25102 03/08102

-03/08/02

- 03/20/02

- 03/23102 04/04102 05/05/02 04/19/02 04/24/02 04/30/02 05/09102 05/14/02 05/21/02 05/28/02 06/07/02 06/14/02 06/16/02 06/23/02 07/12/02 07/13/02 07/20/02 08/02/02 08/03/02 08/13/02 08/14/02 08/20/02 08/28/02 09/13/02 09/13/02 09/19/02 09/24/02 10/01/02

.014

.025

.017

.006

.022

.014

.012

.012

.029

.011

.012

.012

.014

.010

.007

.009

.011

.013

.018

.007

.027

.007

.006

.009

.004

.004

.005

.005-

.005

.008

.005

.013

.009

.007

.012

.010

.009

.009

.002

.002

.002

.001

.002

.002

.002

.001

.003

.001

.001

.001

.002

- 6.001

.001

.001

.001

.002

.002

.001

.003

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001 420DC-03_24.doc

'B-7

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station lS1 (pCi/m 3)

(M)

~~~Gross Beta GmaSa Collection Period Volume (i 3) Counting Date Activity 2Sigma Gamma Scan 09/25/02-10/02/02 477.6 10/20/02

.016

.002 10102/02-10/09/02 472 2 10/20/02 020

.002 10/09102-10116/02 466.6 10/26/02 022

.002 10/16/02-10/23/02 477.4 10/26/02 024

.002 10/23/02-10/30/02 506.7 11/19/02 028

.003 10/30/02-11/06/02 470.9 11/19/02

.027

.003 11/06/02-11/13/02 476.1 11/23/02 010

.001 11/13102-11120/02 481.7 11/27/02 021

.002 11/20/02-11/27/02 491 1 12/12/02 040

.004 11127/02-12/04/02 479.5 12/12/02 033

.003 12/04/02-12/11/02 502.7 12/17/02 033

.003 12/11/02-12118/02 472 3 01/01/03

.010

.001 12/18/02-12/24/02 383.9 01/01/03

.007

.001 12/24/02-12/31/02 448 7 01/08/03

.013 002 Gamma Activity On Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/M3 )

01/02/02-04/03/02 5/6/02 ND 04/03/02-07103102 7/23/02 ND 07/03/02-10/02102 10/24/02 ND 10/02102-12/31/02 1/28/03 ND Table Notation:

ND: Radionuclides of interest other than naturally occumng were not detected.

420DC-03_24 doc B-8

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity -

Station 5F1 (pCirn)

^-

Gross Beta Collection Period Volume (mi 3 )

Counting Date Activity

'2Sigma Gamma Scan 01/02/02-01/09/02 01/09/02-01/16/02 01/16/02-01/23/02 01/23102-01/30102 01/30/02-02/06102 02106/02-02113/02 02/13/02-02/20102 02/20102-02127/02 02/27/02-03106102 03/06/02-03/13102 03/13102-03/20/02 03120102-0 3/27/02 03127102-04/03102 04/03/02-04/10/02 04/10/02-04/17/02 04/17/02-04/24/02 04124/02-05/01102 05/01/02-05/08/02 05/08/01-05/15/02 05/15/02-05/22/02 05/22/02-05/29/02 05/29/02-06/05102 06/05/02-06112/02 06/12102-06/19/02 06/19102-06/26/02 06/26/02-07/03/02 07/03/02-07/10/02 07/10/02-07/17102 07/17/02-07/24/02 07/24/02-07131/02 07/31/02-08/07/02 08/07/02-08/14/02 08/14/02-08/21/02 08/21/02-08/28/02 08/28/02-09104/02 09/04/02-09/11/02 09/11/02-09/18/02 09/18/02-09/25/02 473.3 452.9 454.2 469.2 461.4 474.2 480.9 458.0 400.5 424.5 424.4 421.5 437.6 424.8 423.0 439.7 443.7 476.9 473.4 468.7 470.4 465.4 467.2 470.0 462.1 488.1 460.8 464.6 466.1 466.4 479.6 474.9 473.9 485.9 476.0 501.0 469 2 477.3 01/16/02 01/23/02 01/30/02 02/04/02 02/12/02 02/21/02 02/25/02 03/07/02 03/08/02 03/20/02 03/23/02 04/03/02 05/05/02 04/19/02 04/23102 04/29/02 05/09/02 05/14/02 05/21/02 05/28/02 06/06/02 06/13/02

-06/16/02 06/23/02 07/12/02 07/12/02 07/20/02 08/02/02 08/03/02 08/13/02 08/14/02 08/19/02 08/27/02 09/12/02 09/13/02 09/18/02 09/24/02 09/30/02

.015&

.025

.016

.007

.025

.017

.020

.012

.059

.010

.014

.013

.017

.019

.009

.009

.009

.008

.011

.010

.009

.006

.010

.010,

.004

.004

.005

.008

.006

.009

.005

.012

.008

.007

.012

.012

.008

.009

.002

.003

.002

.001

.003

.002

.002

.001

.006

.001

.002

.002

.002

.002

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001 420DC-03_24.doc B-9

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station 5F1 (pCi/m 3)

Gross Beta Collection Period Volume (mi3 )

Counting Date Activity 2Sigma Gamma Scan 09/25/02-10/02/02 484.6 10/19/02

.012

.001 10/02/02-10/09/02 482.2 10/20/02

.018

.002 10/09/02-10/16102 484.9 10126/02

.022

.002 10/16/02-10/23102 486.2 10/26/02

.023

.002 10/23/02-10/30102 487.9 11118/02

.032

.003 10/30/02-11/06/02 491.2 11119/02

.031

.003 11/06/02-11/13102 495.9 11123/02

.010

.001 11/13/02-11/20/02 497.9 11/26102

.021

.002 11/20/02-11/27/02 499.4 12/12/02

.039

.004 11/27/02-12104102 503.0 12/12/02

.034

.003 12/04/02-12/11/02 525.7 12/17/02

.036

.003 12/11/02-12/18/02 489.6 12/31/02

.011

.001 12/18/02-12/24/02 433.8 01/01/03

.006

.001 12/24/02-12/31/02 505.7 01/08/03

.011

.001 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/M3 )

01102/02-04/03/02 5/2/02 ND 04103/02-07/03/02 7/22/02 ND 07103/02-10/02102 10/23/02 ND 10/02/02-12/31/02 1127103 ND Table Notation-ND-Radionuclides of interest other than naturally occurring were not detected.

420DC-03_24 doc B-10

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station 7D1 (pCi/m3)

Counting Gross Beta Collection Period Volume (m3)

- Date Activity 2Sigma Gamma Scan 01/02/02-01109/02 01/09/02-01/16/02 01/16/02-01/23/02 01/23/02-01130102 01 130/02-02/06/02 02/06/02-02/13/02 02/13/02-02/20/02 02/20/02-02/27/02 02/27/02-03/06/02 03/06/02-03/1 3/02 03/13/02-03/20/02 03/20/02-03127/02 03127102-04/03/02 04/03/02-04/10/02 04/10/02-04/17102 04/17/02-04/24/02 04/24/02-05/01/02 05101/02-05/08102 05/08/02-05/15/02 05/15/02-05/22/02 05/22/02-05/29/02 05/29102-06/05/02 06/05/02-06/12/02 06/12/02-06119/02 06/19/02-06/26/02 06/26/02-07/03/02 07/03/02-07/10/02 07/10/02-07/17/02 07/17/02-07/24/02 07/24/02-07/31/02 07/31 /02-08/07/02 08/07/02-08/14/02 08/14/02-08/21/02 08/21/02-08/28/02 08/28/02-09/04/02 09/04/02-09/11/02 467.6 465.3 449.4 469.4 453.2 460.7 472.9 461.6 426.2 433.7 434.8 428.5 438.4 424.9 419.8 444 1 439 0 445.7 444.3 445.1 447.5 451.0 454.7 447.6 442.7 447.1 447.4 450 5 456.6 441.0 454.7 451.4 445.7 442.0 446.6 458.5 01/16/02 01/23/02

,01/30/02

, 02/04/02

--02/12/02 02/21/02 02/22/02 03/08/02 03/08/02 03/20/02 03/23/02 04/03/02 05/05/02

.04/19/02 04/23/02 04/29/02 05/09/02 05/14/02 05/21/02 05/28102 06/07/02 06/14/02 06116/02 06/23/02 07/12/02 07/12/02 07/20/02 08/02/02 08/05/02 08/13/02 08/14/02 08/19/02 08/27/02 09/12/02 09/13/02 09/18/02

.015

.022

.015

.007

.021

.015

.017

.011

.043

.009

.010

.012

.016

.010

.007

.011

.010

.010

.012

.006

.012

.006

.008

.011

.004 005

.008

.006

.006

.009

.005

.012

.010

.006

.012

.010

.002

.002

.002

.001

.002

.002

.002

.001e

.004

.001

.001

.001

.002

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

'.001

.001

.001-

.001

.001

.001

.001

.001

.002

.001 420DC-03_24 doc B-1 1

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station 7D1 (pCi/M3 )

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 09/11/02-09/18/02 481.3 09/24/02

.010

.001 09118/02-09/25102 463.4 09/30/02 009

.001 09/25/02-10/02/02 466.7 10/19/02

.013

.001 10102102-10/09/02 472.1 10/20/02

.018

.002 10/09/02-10/16/02 494.2 10/26/02

.022

.002 10/16/02-10/23/02 486 9 10/26/02

.024 002 10/23/02-10/30/02 507 3 11/18/02

.030 003 10/30/02-11/06/02 471.3 11/19/02

.033 003 11/06/02-11/13/02 502.7 11/23/02

.010

.001 11/13102-11/20/02 4864 11/26/02

.019

.002 11/20/02-11/27102 493.7 12/12/02

.032

.003 11/27/02-12/04/02 503 8 12/12/02

.038

.004 12/04/02-12J11102 516.6 12/17/02 034

.003 12/11/02-12/18/02 480.5 12/31/02

.010

.001 12118/02-12124/02 415.8 01/01/03

.006

.001 12/24/02-12/31/02 519.3 01/08/03 009

.001 Gamma Activity on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/M3 )

01/02102-04/03102 5/6/02 ND 04/03/02-07/03/02 7/22/02 ND 07/03/02-10/02/02 10/23/02 ND 10/02/02-12/31/02 1/27/03 ND Table Notation ND Radionuclides of interest other than naturally occurring were not detected.

420DC-03 24.doc B-12

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station 8S1 (pCi/m3)

Gross Beta Collection Period Volume (m3) daunting Date Activity 2Sigma Gamma Scan 01/02/02-01/09/02 01/09102-01/16/02 01/16/02-01/23102 01/23102-01/30/02 01/30/02-02106/02 02106/02-02/13/02 02/13102-02/20102 02120102-02127102 02127102-03106102 03106102-03/13102 03/13/02-03/20/02 03120102-03127102 03/27/02-04/03/02 04/03/02-04/10/02 04/10/02-04/17/02 04/1 7102-04124102 04/24/02-05/01/02 05/01/02-05108101 05/08102-05/15/02 05/1 5/02-05/22102 05/22/02-05/29/02 05/29/02-06/05/02 06/05/02-06/1 2/02 06/12102-06/19/02 06/19102-06/26/02 06/26/02-07/03/02 07/03/02-07/10/02 07/10/02-07/17/02 07/1 7/02-07/24/02 07124102-07/31/02 07/31 /02-08/07/02-08/07/02-08/14/02 08/14/02-08/21/02 08/21/02-08/28/02 08/28/02-09/04/02 09/04/02-09/1 1/02 09/11/02-09/18/02 459.2 468.3 439.0 479.9 474.6 475.6 479.1 475.6 469.6 475.6' 481.3 474.8 483.0 470.5 472.8 477.6 475.1 495:3 487.6 495.0 485.9 466.0 508.3 457.4 448.8 473.7 454.4 471.7 484.0 448.0 470.4 461.5 468.3 462.6 473.5 460.3 464.6 01/17/02 01/23/02 01/30/02 02/05/02 02/12/02 02/21/02 02/22/02 03/08/02

'03/08/02 a03/20/02 03/23/02 04/03/02 05/05/02 04/1 9/02 04/24/02 04/30/02 05/09/02 05/14/02 05/21/02 05/28/02 06/07/02 06/14/02 06/16/02 06/23/01 07/12/02 07/17/02 07/22/02 08/02102 08/03/02 08/13/02 08/14/02 08/19/02 08/28/02 09/12/02 09/13/02 09/18/02 09/24/02

.013 026

.014

.006

.025

.015

.013

.013

.031

.009

.010

.013

.024

+.009

.008

.011 019

-.011

.011

.007

.008

-007

.008

.010

.004

.004

.006

.006

.005

.010

.006

.011

.009

.006

.012

.010

.010

.002

003

.002 001

.003

.002

.002

.002

.003

.001

.001

.001

.002

.001

".001

.001

.002

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001 420DC-03_24.doc B-13

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 8S1 (pCi/m3)

Gross Beta Collection Period Volume (M3)

Counting Date Activity 2Sigma Gamma Scan 09/18/02-09/25/02 462.0 10/01/02 008

.001 09/25102-10102102 463.6 10/19/02

.013

.001 10/02/02-10/09/02 486 0 10/20/02

.023

.002 10/09/02-10/16/02 466 0 10/26/02

.024

.002 10/16/02-10/23102 469 5 10/26/02

.020

.002 10/23/02-10/30/02 473 8 11/18/02

.033

.003 10/30/02-11/06/02 451.1 11/19/02

.032

.003 11/06/02-11/13/02 459 3 11/23/02

.007

.001 11/13/02-11/20/02 468 9 11/26/02

.018

.002 11/20/02-11/27/02 469 5 12/12/02

.035

.003 11/27/02-12/04102 463.1 12/12/02

.036

.004 12104/02-12/11/02 487.0 12/17/02

.035

.003 12/11/02-12/18/02 457 1 12/31/02

.012

.001 12/18102-12/24/02 395.4 01/01/03

.007

.001 12/24/02-12/31/02 458.6 01/08/03

.009

.001 Gamma Activity on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/m3) 01/02102-04/03/02 5/6/02 ND 04/03/02-07/03/02 7/22/02 ND 07/03/02-10/02102 10/23/02 ND 10/02/02-12/31/02 1/27/03 ND Table Notation-ND Radionuclides of interest other than naturally occumng were not detected.

420DC-03_24 doc B-14

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station 8S2 (pCilm3 )

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 01/02/02-01/09102

• 01/09102-01/16/02 01/16102-01/23/02 01/23/02-01/30/02 01130/02-02/06/02 02/06/02-02/13/02 02/13/02-02/20/02 02/20102-02/27/02 02/27/02-03/06/02 03/06/02-03/13/02 03/13/02-03/20/02 03/20/02-03/27/02 03/27/02-04/03102 04/03/02-04/10/02 04/10/02-04/17/02 04/17/02-04124/02 04124/02-05/01/02 05101/02-05/08/01 05/08/02-05/15/02 05115/02-05/22/02 05/22/02-05/29102 05/29/02-06/05/02 06/05/02-06112/02 06/12/02-06/19102 06/19/02-06126102 06/26/02-07/03102 07/03/02-07/10/02 07/10/02-07/17/02 07/17/02-07/24102 07/24/02-07/31/02 07/31102-08/07/02 08/07/02-08/14/02 08/14/02-08121/02 08/21/02-08128/02 08/28/02-09/04/02 09/04/02-09/111/02 09/11/02-09118/02 445.7 274.2 435.1 444.8 431.5 433.5 430.6 430.4 417.6 419.8 421.6 450.8 437.6 427.5 432.1 441.4 430.2 429.4 428.1 456.8 458.1 437.5 480.0 465.6 453.9 466.4 448.7 444.2 459.1 438.2

-509.4 495.9 496.2 505.6 494.8 491.9 500.5' 01/17/02 01/23/02 01/30/02 02/05/02

-02/04/02 02/21/02 02/22/02 03/08/02 03/08/02 03/20/02 03/23/02 04/03/02 05/05/02 04/19/02 04/24/02 04/30/02 05109102 05114/02 05/21/02 05/28/02 06/07/02 06/14/02 06/16/02 06/23/02 07/12102 07/13/02 07/22/02 08/02/02 08/03/02 08/13/02 08/14102 08/20/02 08/28/02 09113/02 09/13/02 09/18/02 09/24/02

.013

.029

.016

.007

.022

.017

.015

.013

.033

.010

.011

.011

.016

.012

.007

.012

.009

.014

.010

.006

.009

.006

.006

.015

.004

.004

-.007

.007

.005

.008

.006

.012

.010

.005

.013

.010

.010

.002 003

.002

.001

.002

.002

.002

.002

-.003

.001

.001

.001

.002:

.001-

.001

.001

.001

.002

.001

.001

.001

.001-.

.001

.002

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.002

.001

.001 420DC-03_24 doc 1

Table B-3 (Continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station 8S2 (pCi/M3 )

Gross Beta Collection Period Volume (M3)

Counting Date Activity 2Sigma Gamma Scan 09118/02-09/25/02 497 7 10/01/02 009

.001 09/25/02-10/02/02 490 6 10/20/02

.014

.002 10/02/02-10/09/02 500 2 10/20/02

.019 002 10/09/02-10/16/02 498.3 10/26/02

.026

.003 10/16/02-10/23/02 507 8 10/26/02

.024

.002 10/23/02-10/30/02 532.3 11/18/02

.030

.003 10/30/02-11/06/02 490.9 11/19/02 030

.003 11/06/02-11/13/02 505.2 11/23/02 008 001 11/13/02-11/20/02 507.5 11/26/02 022

.002 11/20/02-11/27/02 516.5 12/12/02 042

.004 11/27/02-12/04/02 502.9 12/12/02 042 004 12104102-12/111/02 534.9 12/17/02 037 004 12/11/02-12/18/02 485.9 12/31/02

.013 001 12/18/02-12/24/02 433.7 01/01/03

.005 001 12/24/02-12131/02 512.3 01/08/03

.011 001 Gamma Activity on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/M3 )

01/02/02-04/03/02 5/6/02 ND 04/03/02-07/03/02 7/22/02 ND 07/03/02-10/02/02 10/23/02 ND 10/02/02-12/31/02 1/27/03 ND

• Sampler Off-63 hours Table Notation-ND Radionuclides of interest other than naturally occumng were not detected 420DC-03_24.doc B-16

Table B-3 (continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station MT1 (pCi/m 3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 01/02/02-01/09/02 01/09/02-01116102 01/16/02-01/23/02 01/23/02-01/30/02 01 130/02-02106102 02/06/02-02/1 3/02 02/13/02-02/20/02 02/20102-02127/02 02/27/02-03106102 03106102-03/13102 03/13/02-03/20/02 03120102-03127102 03127102-04103102 04/03/02-04/10/02 04/10/02-04/17/02 04/17/02-04/24/02 04124/02-05/01/02 05/01/02-05/08/02 05/08/02-05/15/02 05/15/02-05/22/02 05/22/02-05/29/02 05129/02-06105102 06105102-06/12/02 06/12/02-06/19/02 06/1 9102-06/26/02 06/26/02-07/03/02 07/03/02-07/10/02 07/10/02-07/17/02 07/17/02-07/24/02 07/24/02-07/31/02 07/31/02-08/07/02 08/07/02-08/14/02 08/14/02-08/21/02 08/21/02-08/28102 08/28/02-09/04/02 09/04/02-09/11/02 09/11/02-09/18/02 470.4 487.7 453.6 473.0 472.2 472.2 472.8 472.7 463.6 472.2 489.1 466.7 468.5 467.1 474.2 474.2 439.8 426.2 435.6 444.7 436.1 435.7 466.4 446.6 446.6 456.7 448.3 433.8 445.7 429.5 443.0 439.5 440.4 441.1 445.7 444.3 450.7 01/16/02 01/23/02 01/29102 02/04/02 02/12/02 02/21/02 02/22/02 03/07/02 03/08/02 03/20/02 03/23/02

.04103/02 05/05/02 04/19/02 04/23/02

-04129102 05/09102 05/14102 05/21/02 05/28/02 06/06/02 06/13/02 06/16/02

-06/23/02 07/11/02 07/12/02 07/20/02 08/02/02 08/02/02 08/13/02 08/14/02 08/19/02 08/27/02 09/12/02 09/13/02 09/18/02 09/24/02

.014

.025

.016

.007

.022

.019

.013

.011

.033

.009

.013

.011

.014

.009

.007

.010

.008

.009

.011

.005

.008

.006

.007

.009

.006

.004

.004

.005

.006

.009

.006

.012

.010

.006

.010

.010

.006

.002

.003

.002

.001

.002

.002

.002

.001 003

.001

.002

.001

.002

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

-.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001

.001 I

420DC-03_24.doc 13-17

Table B-3 (continued)

Diablo Canyon Power Plant 2002 Annual Report Airborne Radioactivity Station MITI (pCi/m3)

Gross Beta Collection Period Volume (mi3 )

Counting Date Activity 2Sigma Gamma Scan 09/18102-09125102 441.3 09/30/02 007 001 09/25/02-10/02/02 441.4 10/19/02

.018

.002 10/02/02-10/09/02 443.7 10/20/02 018 002 10109/02-10/16102 458.2 10/26/02

.023 002 10/16/02-10/23102 478 3 10/26/02

.021 002 10/23/02-10/30/02 476.5 11/18/02

.027 003 10/30/02-11/06/02 450.7 11/19/02

.043

.004 11/06/02-11/13/02 474 6 11/22/02

.010

.001 11/13/02-11120/02 408 6 11/26/02

.022

.002 11/20/02-11/27/02 421 2 12/12/02

.034

.003 11/27/02-12/04/02 422 0 12/12/02

.036

.004 12/04/02-12/11/02 432.7 12/17/02

.036

.004 12/111/02-12118/02 420 3 12/31/02

.012

.001 12/18/02-12/24/02 318.4 01/01/03

.006

.001 12/24102-12/31/02 456 8 01/08103

.010 001 Gamma Activity on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/M 3) 01102/02-04/03/02 5/2/02 ND 04/03/02-07/03/02 7/22/02 ND 07103/02-10/02/02 10/23/02

- ND 10/02/02-12/31/02 1/27/03 ND Table Notation-ND-Radionuclides of interest other than naturally occurring were not detected.

420DC-03_24 docB B-18

Table B-4 Diablo Canyon Power Plan 2002 Annual Report Environmental Dosimetry Quarterly Total (mR) (a)

-Annual Quarterly Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Total Avg.

+/-2o MTI WN1 OsM OSS1

-5S1 6S1 8S1 8S2 5S3 2D1 4D1 5F1 IAI 7D2 7G2 7C1 7F1 OBI 7D1 4C1 OS2 iSi 2S1 3S1 4S1 7S1 9S1 lCl SCI 3D1 6D1 SF3 19.1 +/- 0.4 11.0 +/- 0.3 17.6 +/- 0.3 20.6 +/- 0.6 11.8+/-0.3 14.0 +/- 0.2 18.3+/- 0.6 15.9 +/- 0.4 10.1 +/- 0.2 9.8 +/- 0.2 15.2+/- 0.5 9.8+/-0.4 14.8+/-0.4 14.9 +/- 0.4 16.0 +/- 0.3 14.8 +/- 0.4 8.8 +/- 0.2 9.8 +/- 0.3 9.1+/-0.4 15.1 +/- 0.3 15.9 +/- 0.4 14.6+/-0.4 18.6 0.4 16.4+/-0.4 16.9i 0.4 19.8 0.4 11.8 0.1 13.8 0.4 10.9 0.3 13.9 +/- 1.0 20.9 +/- 0.4 21.0+/-0.5 12.3 +/- 0.4 19.9 +/- 0.5 23.3 +/- 0.6 14.1+/-0.7 16.9 +/- 0.4 20.6 +/- 0.6-19.1 +/- 0.7 11.6+/-0.4 %

11.4 +/- 0.3 16.9 +/- 0.4 12.5 +/- 0.5 16.7,+/- 0.5

- 16.9 0.6 18.0 0.6 16.6+/-0.3 9.6i 0.3 11.4i 0.4 10.8+/-0.4 17.2 0.5 16.5 +/- 0.6 17.2 0.7 21.5 +/- 0.6

-19.0 0.5 18.4 0.7 23.2 0.7 13.3 +/- 0.5 16.4 +/- 0.4 12.7+/- 0.3 15.7 +/- 0.5 22.9 +/- 0.5 22.1 +/- 0.3, 13.4+/-0.5 20.0 +/- 0.6 23.6 i+/-0.4 14.1 +/- 0.3 16.6 +/- 0.5

-21.0 +/- 0.4 19.1 +/- 0.4 12.2 +/- 0.3 12.1 +/- 0.4 18.0 +/- 0.4 12.7+/-0.3 17.6 +/- 0.5 18.6i0.5 19.1 0.5 16.5 i 0.6 10.5 0.3 11.5+/-0.4 11.3 0.4 17.7 +/- 0.6 16.3 +/- 0.5 17.4i+/- O.6 21.8 +/- 0.6 19.0+/-0.5

-18.6+/- 0.5 22.20.7 13.4 0.4 17.7 0.5 13.1 0.4 16.8 0.6 23.2 i 0.6 20.6 +/- 0.8 11.9 +/- 0.4 18.8 +/- 0.3 22.5 +/- 0.7 12.9 +/- 0.4 15.8 +/- 0.3 19.70.7 18.2 +/- 0.4 11.4 +/- 0.2 11.4 +/- 0.3 16.7 +/- 0.4 11.5 +/- 0.5

.15.5+/-0.5

-16.8+/-0.8 I17.2+/- 0.6 15.9i0.3 9.7+/- 0.4 11.1+/-0.3 10.3i 0.2 17.0'+/- 0.7 15.8 +/- 0.5 16.3 +/- 0.2 20.6 +/- 0.4 18.6 +/- 0.4 18.0 +/- 0.4 21.5 +/- 0.7 12.9 +/- 0.5 16.1 +/- 0.5 12.4 +/- 0.4 16.5 +/- 0.6 22.2 +/- 0.6 82.8 48.6 76.3 90.0 52.9 63.3 79.6 72.3

-45.3 44.7 66.8 46.5 64.6 67.2 70.3

- 63.8 38.6 43.8 41.5

- 67.0 64.5 65.5 82.5 73.0-71.9 86.7 51.4 64.0 49.1 62.9 89.2 20.7 12.2

• 19.1 22.5 13.2 15.8 19.9 18.1 11.3 11.2 16.7 11.6

'16.2 16.8 -

17.6 16.0 9.7 11.0 10.4 16.8 16.1 16.4 20.6 18.3 18.0 21.7 12.9 16.0 12.3 15.7 22.3 2.5

- 2.0 2.2 2.7 2.2 2.6 '

2.4 3.0 1.8 1.9 2.3 2.7 2.5 -

3.0

-2.6r 1.7 1.4 1.6 1.9 2.3 0.7 2.6 2.9 2.5 1.5 2.9 1.5 3.2 1.9 2.6 2.0 Table Notation-(') The exposure (mR) has been normalized for a standard quarter (i.e., for a 90-day period).

420DC-03_24.doc B-19

Table B-5 Land Use Census 2002 Distance in Miles from the Unit 1 Center Line to the Nearest Milk Animal, Residence, Vegetable Garden Nearest Nearest Residence Vegetable 221/2 Degree(a)

Nearest Residence Azimuth Garden Radial Sector Milk Animal km (mi)

Degree km (mi)

NW None 1.93 (1.2) 319.5 None NNW None 2.41 (1.5) 331 None N

None None None NNE None 5.3 (3.3) 018.5 None NE None 7.89 (4.9) 036 None ENE None 7.08 (4.4) 063 5 None E

None 5.95 (3.7) 097.5 None E

None 7.24 (4.5) 098 7.24 (4.5)

ESE None None 5.28 (3.3)fb SE None None None Table Notation:

(')

Sectors not shown contain no land beyond the site boundary, other than islets not used for the purposes indicated in this table.

(

The vegetable garden indicated is the commercial farm along the westward side of the site access road, however, it does not produce broadleaf vegetation. Area is about 100 acres of land with 6 to 10 rotational plantings per year (not all 100 acres planted at any one time) Commercial crops are about 75% sugar peas and 25% oat hay The farm starts at approximately 3 3 miles and extends to 4 5 miles from the plant.

420DC-03_24 doc B-20

Table B-6

,Diablo Canyon Power Plant 2002 Annual Report Lower Limits of Detection (LLD) Exceeded*

Sample Station No.

Date Collected 131i-1'0BaLa Seawater DCM 06/25/02 2.1E2 39.6 Seawater 7C2 06/25/02 1.7E2 47.5 Seawater DCM

-07/30/02 2.2E1 Table Notation-

• Table lists all samples for which the lower limits of detection did not meet the values on Table 3.

• • Results are reported in pCi/L for liquids; in pCi/m3, for iodine cartridges; and pCi/kg, for fish and food crops.

-t 420DC-03_24.doc B-21

Table B-7 Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02A05 Vegetative Greens (Snow peas) 7C1 1/10/2002 02A06 Air Particulate, Iodine Cartridge MT1 1/9/2002 02A07 Air Particulate, Iodine Cartridge 5F1 1/9/2002 02A08 Air Particulate, Iodine Cartridge 7D1 1/9/2002 02A09 Air Particulate, Iodine Cartridge 8SI 1/9/2002 02A10 Air Particulate, Iodine Cartridge 8S2 1/9/2002 02A1 1 Air Particulate, Iodine Cartridge OS2 1/9/2002 02A12 Air Particulate, Iodine Cartridge ISI 1/9/2002 02A15 Market Fish 7D3 1/15/2002 02A16 California Mussels 7C2 1/10/2002 02A17 Intertidal Algae 7C2 1/10/2002 02A19 Air Particulate, Iodine Cartridge MT1 1/16/2002 02A20 Air Particulate, Iodine Cartridge 5F1 1/16/2002 02A21 Air Particulate, Iodine Cartridge 7D1 1/16/2002 02A22 Air Particulate, Iodine Cartridge 8S1 1/16/2002 02A23 Air Particulate, Iodine Cartridge 8S2 1/16/2002 02A24 Air Particulate, Iodine Cartridge 0S2 1/16/2002 02A25 Air Particulate, Iodine Cartridge ISI 1/16/2002 02A35 Surface Water (Outfall)

OUT 1/24/2002 02A36 Drinking Water 5S2 1/24/2002 02A37 Drinking Water DWI 1/24/2002 02A38 Milk SF2 1/24/2002 02A39 Air Particulate, Iodine Cartridge MTI 1/23/2002 02A40 Air Particulate, Iodine Cartridge SF1 1/23/2002 02A41 Air Particulate, Iodine Cartridge 7D1 1/23/2002 420DC-03_24.doc B-22

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02A42 Air Particulate, Iodine Cartridge 02A43 Air Particulate, Iodine Cartridge 02A44 Air Particulate, Iodine Cartridge 02A45 Air Particuiate, Iodine Cartridge 02A49 -

Surface Water (Seawater) 02A50 Surface Water (Seawater).

02A53 Air Particulate, Iodine Cartridge' 02A54 Air Particulate, Iodine Cartridge 02A55 Air Particulate, Iodine Cartridge 02A56 Air Particulate, Iodine Cartridge 02A57 Air Particulate, Iodine Cartridge 02A58 Air Particulate, Iodine Cartridge 02A59 Air Particuiate, Iodine Cartridge 02A62 Perch 02A63 Rockfish 02A64 Perch 02A65

' Rockfish 02A66 "Perch 02A67 Rockfish 02A68 Perch 02A69-Rockfish 02A70 Air Particulate, Iodine Cartridge 02A71 Air Particulate, Iodine Cartridge 02A72 Air Particulate, Iodine Cartridge 02A73 Air Particulate, Iodine Cartridge 8S1 8S2 0S2 iS1 DCM 7C2 MT1 5F1 7D1 8S1 8S2 0S2 iSi

'PON PON

-DCM DCM POS POS 7C2-7C2 MT1 5F1 7D1 8S1 1/23/2002 1/23/2002 1/23/2002 1/23/2002' 1/29/2002 1/29/2002

-1/30/2002 1/30/2002 1/30/2002 1/30/2002 1/30/2002 1/30/2002 1/30/2002 1/25/2002 1/25/2002 1/30/2002 1/30/2002 1/31/2002 1/31/2002 1/25/2002

• 1/25/2002 2/6/2002 2/6/2002 2/6/2002 2/6/2002 420DC-03_24.doc IB-23

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02A74 Air Particulate, Iodine Cartridge 8S2 2/6/2002 02A75 Air Particulate, Iodine Cartridge 0S2 2/6/2002 02A76 Air Particulate, Iodine Cartridge iS 1 2/6/2002 02A80 Air Particulate, Iodine Cartridge MTI 2/13/2002 02A81 Air Particulate, Iodine Cartridge SF1 2/13/2002 02A82 Air Particulate, Iodine Cartridge 7D1 2/13/2002 02A83 Air Particulate, Iodine Cartridge 8S1 2/13/2002 02A84 Air Particulate, Iodine Cartridge 8S2 2/13/2002 02A85 Air Particulate, Iodine Cartridge 0S2 2/13/2002 02A86 Air Particulate, Iodine Cartridge ISL 2/13/2002 02A87 Surface Water (Outfall)

OUT 2/19/2002 02A88 Drinking Water 5S2 2/19/2002 02A89 Drinking Water DW1 2/19/2002 02A90 Milk 5F2 2/19/2002 02A91 California Mussels POS 2/8/2002 02A94 Surface Water (Seawater)

DCM 2/21/2002 02A95 Surface Water (Seawater) 7C2 2/20/2002 02A96 Vegetative Greens (Peas) 7C1 2/21/2002 02A97 Air Particulate, Iodine Cartridge MTI 2/20/2002 02A98 Air Particulate, Iodine Cartridge 5F1 2/20/2002 02A99 Air Particulate, Iodine Cartridge 7D1 2/20/2002 02B00 Air Particulate, Iodine Cartridge 8S 1 2/20/2002 02B01 Air Particulate, Iodine Cartridge 8S2 2/20/2002 02B02 Air Particulate, Iodine Cartridge 0S2 2/20/2002 02B03 Air Particulate, Iodine Cartridge l11 2/20/2002 420DC-03_24 doc B-24

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02B 19 02B20 02B21 02B22 02B23 02B24 02B25 02B26 02B27 02B28 02B29 02B30 02B331 02B32 02B33 02B34 02B35 02B36 02B53 02B54 02B55 02B56 02B57 02B58 02B59 Giant Kelp Blade -

Giant Kelp Pneumatocyst Bull Kelp Blade Bull Kelp Pneumnatocyst; Bull Kelp Blade Bull Kelp Pneumatocyst Bull Kelp Blade Bull Kelp Pneumatocyst California Mussels California Mussels Iridaea Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge DCM DCM POS

'..POS 7C2

'7C2, PON PON PON-DCM-

• DCM r

MT1

-SF1 7D1 8S1 8S2

• 0S2 ill MT1 -

5F1 7D1 8S1 0S2 isi 3/1/2002 3/1/2002 3/1/2002 3/l/2002 3/1/2002 3/1/2002 3/l/2002 3/1/2002 3/5/2002 2/25/2002 2/2512002 2/27/2002 2/27/2002 2/27/2002 2/27/2002 2/27/2002 2/27/2002 2/27/2002 3/6/2002 3/6/2002 3/6/2002 3/6/2002 3/6/2002 3/6/2002 3/6/2002 420DC-03_24.doc

-B-25

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02B64 Air Particulate, Iodine Cartridge MT1 3/13/2002 02B65 Air Particulate, Iodine Cartridge 5F1 3/13/2002 02B66 Air Particulate, Iodine Cartridge 7D1 3/13/2002 02B67 Air Particulate, Iodine Cartridge 8S1 3/13/2002 02B68 Air Particulate, Iodine Cartridge 8S2 3/13/2002 02B69 Air Particulate, Iodine Cartridge 0S2 3/13/2002 02B70 Air Particulate, Iodine Cartridge 15 3/13/2002 02B87 Surface Water (Outfall)

OUT 3/20/2002 02B88 Drinking Water 5S2 3/20/2002 02B89 Drinking Water DW1 3/20/2002 02B90 Milk 5F2 3/20/2002 02B91 Air Particulate, Iodine Cartridge MT1 3/20/2002 02B92 Air Particulate, Iodine Cartridge 5F 1 3/20/2002 02B93 Air Particulate, Iodine Cartridge 7D 1 3/20/2002 02B94 Air Particulate, Iodine Cartridge 8S1 3/20/2002 02B95 Air Particulate, Iodine Cartridge 8S2 3/20/2002 02B96 Air Particulate, Iodine Cartridge 0S2 3/20/2002 02B97 Air Particulate, Iodine Cartridge ISI 3/20/2002 02B99 Surface Water (Seawater)

DCM 3/27/2002 02C00 Surface Water (Seawater) 7C2 3/27/2002 02C0 1 Vegetative Greens (Peas) 7C1 3/26/2002 02C02 Air Particulate, Iodine Cartridge MT1 3/27/2002 02C03 Air Particulate, Iodine Cartridge 5F1 3/27/2002 02C04 Air Particulate, Iodine Cartridge 7D1 3/27/2002 02C05 Air Particulate, Iodine Cartridge 8SI 3/27/2002 420DC-03_24 doc B-26

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02C06 02C07 02C08 02C14 02C15 02C16 02C17 02C18 02C19 02C20 02C21 02C22 02C23 02C46-02C47 02C48 02C49 02C50 02C51 02C52 02C53' 02C54 02C64 02C65 02C66 Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (Lettuce)

Vegetative Greens (Lettuce)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (Mixed)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (Lettuce)

Vegetative Greens (Bokchoy)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge 8S2 OS2 Iis',I 5F2 7G1 MT1 5F1

-7D1 8S1 8S2 OS2 isl

• 6C1 MT1 S

5F1 7D1 8S1 8S2 OS2 l15 I5F2 7G1 MTl 7D1' 3/27/2002 3/27/2002 3/27/2002 4/3/2002 4/3/2002 4/3/2002 4/3/2002 4/3/2002 4/3/2002 4/3/2002 4/3/2002 4/3/2002 4/4/2002 4/10/2002 4/10/2002 4/10/2002 4/10/2002 4/10/2002 4/10/2002 4/10/2002 4/16/2002 4/16/2002 4/17/2002 4/17/2002 4/17/2002 420DC-03_24.doc B1-27

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02C67 Air Particulate, Iodine Cartridge 8S1 4/17/2002 02C68 Air Particulate, Iodine Cartridge 8S2 4/17/2002 02C69 Air Particulate, Iodine Cartridge 0S2 4/17/2002 02C70 Air Particulate, Iodine Cartridge lSI 4/17/2002 02C71 Surface Water (Outfall)

OUT 4/23/2002 02C72 Drinking Water 5S2 4/23/2002 02C73' Drinking Water DWI 4/23/2002 02C74 Milk 5F2 4/23/2002 02C76 Air Particulate, Iodine Cartridge MT1 4/24/2002 02C77 Air Particulate, Iodine Cartridge 5F1 4/24/2002 02C78 Air Particulate, Iodine Cartridge 7D1 4/24/2002 02C79 Air Particulate, Iodine Cartridge 8S1 4/24/2002 02C80 Air Particulate, Iodine Cartridge 8S2 4/24/2002 02C81 Air Particulate, Iodine Cartridge 0S2 4/24/2002 02C82 Air Particulate, Iodine Cartridge iS1 4/24/2002 02C94 Vegetative Greens (Peas) 7C1 4/29/2002 02C95 Surface Water (Seawater)

DCM 4/30/2002 02C96 Surface Water (Seawater) 7C2 4/30/2002 02C99 Air Particulate, Iodine Cartridge MT1 5/1/2002 02D00 Air Particulate, Iodine Cartridge 5F1 5/1/2002 02D0 1 Air Particulate, Iodine Cartridge 7D1 5/1/2002 02D02 Air Particulate, Iodine Cartridge 8S 1 5/1/2002 02D03 Air Particulate, Iodine Cartridge 8S2 5/1/2002 02D04 Air Particulate, Iodine Cartridge 0S2 5/1/2002 02D05 Air Particulate, Iodine Cartridge lSI 5/1/2002 420DC-03_24 doc B-28

Table B-7 (Continued)

Diablo Canyon Power Plant 2092 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample'No.

Description Station No.

Collection Date 02D06 Vegetative Greens (Lettuce) 02D07 Vegetative Greens (Lettuce) 02D10 Air Particulate, Iodine Cartridge' 02D11 Air Particulate, Iodine Cartridge -

02D12 Air Particulate, Iodine Cartridge 02D13 Air Particulate, Iodine Cartridge 02D14 Air Particulate, Iodine Cartridge 02D 15' Air Particulate, Iodine Cartridge 02D16 Air Particulate, Iodine Cartridge, 02D31 Air Particulate, Iodine Cartridge 02D32 Air Particulate, Iodine Cartridge 02D33 Air Particulate, Iodine Cartridge' 02D34 Air Particulate, Iodine Cartridge, 02D35' Air Particulate, Iodine Cartridge 02D36 Air Particulate, Iodine Cartridge 02D37 Air Particulate, Iodine Cartridge 02D38 Surface Water (Outfall) 02D39 Drinking Water 02D40 Drinking Water 02D41 Milk 02D42 Surfac6 Water (Seawater) 02D43 Surface Water (Seawater) 02D44' Air Particulate, Iodine Cartridge 02D45 Air Particulate, Iodine Cartridge 02D46 Air Particulate, Iodine Cartridge 5F2 7G1 MT1 SF1' 7D1 8S1

'8S2 0S2 iSi MT1 5F1

-7D1I 8S1-8S2-0S2 iSl OUT 5S2 DW1 5F2 DCM 7C2 MT1' 5F1 7D1 5/6/2002 5/6/2002 5/8/2002 5/8/2002 5/8/2002 5/8/2002 5/8/2002 5/8/2002' 5/8/2002 5/15/2002 5/15/2002 5/15/2002 5/15/2002 5/15/2002 5/15/2002 5/15/2002 5/21/2002 5/21/2002 5/21/2002 5/21/2002 5/22/2002 5/22/2002' 5/22/2002 5/22/2002 5/22/2002 420DC-03_24.doc B-29

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02D47 02D48 02D49 02D50 02D56 02D57 02D58 02D59 02D60 02D61 02D62 02D63 02D64 02D65 02D66 02D67 02D68 02D69 02D70 02D71 02D72 02D73 02D74 02D75 02D76 Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (Snow peas)

Bull Kelp Blade Bull Kelp Pneumatocyst Giant Kelp Blade Giant Kelp Pneumatocyst Bull Kelp Blade Bull Kelp Pneumatocyst Bull Kelp Blade Bull Kelp Pneumatocyst Perch Rockfish 8SI 8S2 0S2 IS1 7CI PON PON DCM DCM

-POS POS 7C2 7C2 PON PON PON DCM DCM DCM DCM POS POS POS 7C2 7C2 5/22/2002 5/22/2002 5/22/2002 5/22/2002 5/28/2002 5/22/2002 5/22/2002 5/22/2002 5/22/2002 5/22/2002 5/22/2002 5/22/2002 5/22/2002 4/25/2002 4/25/2002 5/28/2002 4/12/2002 4/12/2002 5/16/2002 5/16/2002 4/25/2002 4/24/2002 5/28/2002 5/24/2002 5/24/2002 California Mussels Perch Rockfish California Mussels Intertidal Algae Perch Rockfish California Mussels Perch Rockfish 420DC-03_24 doc B-30

Table B-7 (Continued) -

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02D77 02D78 02E11 02E12 02E38 02E39 02E40 02E41 -

02E42 02E43 02E44 02E45 02E46

- 02E60 02E61 02E62 02E63 02E64 02E65 02E71 02E72 02E73 02E74 02E75 02E76 California Mussels Intertidal Algae Vegetative Greens (Peas)

Market Fish (English Sole)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge -

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Surface Water (Outfall)

Drinking Water Drinking Water

-Milk Air Particulate, Iodine Cartridge

~Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge

-Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge

~Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge 7C2

• - I7C2 7CI 7D3 7D1 8S1 8S2 0S2

OUT I5S2 DW1I SF2-

-- SF1

• 7D1 8S1 8S2 0S2

'Si MT1-5F1

. 7D1 8S1 8S2 0S2 5/29/2002 5/29/2002 6/12/2002 6/12/2002 6/19/2002 6/19/2002 6/19/2002 6/19/2002 6/19/2002 6/19/2002 6/19/2002 6/19/2002 6/19/2002' 6/26/2002 6/26/2002 6/26/2002 6/26/2002 6/26/2002 6/26/2002 7/3/2002 7/3/2002 7/3/2002 7/3/2002 7/3/2002 7/3/2002 420DC-03_24.doc B-31

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed, Sample No.

Description Station No.

Collection Date 02E77 02E82 02E83 02E84 02E85 02E86 02E87 02E88 02E89 02E98 02E99 02F00 02F01 02F02 02F03 02F08 02F11 02F12 02F13 02F18 02F19 02F20 02F23 02F24 02F25 Air Particulate, Iodine Cartridge ISi Air Particulate, Iodine Cartridge MT1 Air Particulate, Iodine Cartridge 5F1 Air Particulate, Iodine Cartridge 7D1 Air Particulate, Iodine Cartridge 8S1 Air Particulate, Iodine Cartridge 8S2 Air Particulate, Iodine Cartridge 0S2 Air Particulate, Iodine Cartridge 1Si Vegetative Greens (Broccoli) 5F2 Air Particulate, Iodine Cartridge 5F1 Air Particulate, Iodine Cartridge

^

7D1 Air Particulate, Iodine Cartridge 8S1 Air Particulate, Iodine Cartridge 8S2 Air Particulate, Iodine Cartridge 0S2-Air Particulate, Iodine Cartridge iS1 Milk 5F2 Surface Water (Outfall)

OUT Drinking Water SS2.

Drinking Water DWI Air Particulate, Iodine Cartridge 8S2 Air Particulate, Iodine Cartridge 0S2 Air Particulate, Iodine Cartridge 1SI Vegetative Greens (Swiss Chard),

7G1 Surface Water (Seawater)

DCM Surface Water (Seawater) 7C2 7/3/2002 7/10/2002 7/10/2002 7/10/2002 7/10/2002 7/10/2002 7/10/2002 7/10/2002 7/16/2002 7/17/2002 7/17/2002 7/17/2002 7/17/2002 7/17/2002 7/17/2002 7/23/2002 7/25/2002 7/25/2002 7/25/2002 7/24/2002 7/24/2002 7/24/2002 7/29/2002 7/30/2002 7/30/2002 420DC-03_24 doc B-32

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description

'Station No.

Collection Date 02F27 02F28 02F29 02F30 02F31 02F32 02F33 02F34 02F35 02F36 02F37 02F58 02F59 02F60 02F61 02F62 02F63 02F66 02F67 02F68 02F69 02F70 02F71 02F72 02F73 Bull Kelp Blade Bull Kelp Pneumatocyst Giant Kelp Blade Giant Kelp Pneumatocyst Bull Kelp Blade Bull Kelp Pneumatocyst Bull Kelp Blade Bull Kelp Pneumatocyst California Mussels Intertidal Algae California Mussels Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge -

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Surface Water (Outfall)

PO$4

'PON DCM DCM POS POSv 7C2 -

7C2' DCM' DCM

POS, 5F1

-7D1 8S1 8S2 OS2 isi MT1 5Fi,-

7DI 8S1 8S2 OS2

'lUl 7/30/2002 7/30/2002 7/30/2002 7/30/2002 7/30/2002 7/30/2002 7/30/2002' 7/30/2002 7/26/2002 7/26/2002 7/30/2002 8/7/2002' 8/7/2002 8/7/2002 8/7/2002

• 8/7/2002 8/7/2002 8/14/2002 8/14/2002 8/14/2002 8/14/2002 8/14/2002 8/14/2002 8/14/2002 8/20/2002 420DC-03_24.doc B-33

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed.

Sample No.

Description Station No.

Collection Date 02F74 02F75 02F76 02F86 02F87 02F88 02F89 02F90 02F99 02G00 02G01 02G02 02G03 02G04' 02G05 02G06 02G07

02G08, 02G09 02G10 02G11 02G12 02G31 02G32 02G33 Drinking Water Drinking Water Milk Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Perch Rockfish Perch 5S2 DWI SF2 7D1 8SI

. 4-8S2 0S2 11S MT1 5F1.

7D1, 8S1 8S2 0S2 MT1 SF1

,7D1 8S 1 8S2

. 0S2

lSi, PON PON DCM 8/20/2002 8/20/2002 8/20/2002 8/21/2002 8/21/2002 8/21/2002 8/21/2002 8/21/2002 8/28/2002 8/28/2002 8/28/2002 8/28/2002 8/28/2002 8/28/2002-8/28/2002 9/4/2002 9/4/2002 9/4/2002 9/4/2002 9/4/2002 9/4/2002 9/4/2002 9/5/2002 9/5/2002 9/5/2002

-J 420DC-03_24 doc B-34

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report.

List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

I Description Station No.

Collection Date 02G34 02G35 02G36 02G37 02G38 02G50 02G51 02G52 02G53 02G61 02G62 02G65 02G66 02G67-02G72 02G73 02G74 02G75 02G76 02G77 02G79 02G80 02G81 02G82 02G85 Rockfish

,Perch Rockfish Perch

'Rbckfish Surface Water (Outfall)

Drinking Water Drinking Water Milk Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (Bell Peppers)

Vegetative Greens (Celery)..

Vegetative Greens (Snow Peas)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (mixed)

Market Fish California Mussels Intertidal Algae Air Particulate, Iodine Cartridge DCM POS POS 7C2 7C2 OUT 5S2.

DW1 5F2 0S2 5l1 5F2 7G1

-7C1 SF1 7D1 8S1 8S2 0S2 1S1 6C1 7D3 7C2 7C2 MT1 9/5/2002 7/30/2002 7/30/2002 7/30/2002 7/30/2002 9/17/2002 9/17/2002 9/17/2002 9/17/2002 9/18/2002 9/18/2002 9/24/2002 9/24/2002 9/24/2002 9/25/2002 9/25/2002 9/25/2002 9/25/2002 9/25/2002 9/25/2002 9/30/2002 9/16/2002 9/19/2002 9/19/2002 10/2/2002 420DC-03_24.doc B-35

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

- I Description Station No.

Collection Date 02G86 02G87 02G88 02G89 02G90 02G91 02G93 02G94.

02G98 02G99 02H00 02H01I 02H102 02H27 02H28 021129 02H30 02H31 02H32 02H33 02H36 021137 02H38 021139 02H69 Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (Peppers)

Vegetative Greens (Peas)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Surface Water (Outfall)

Drinking Water Drinking Water Milk Air Particulate, Iodine Cartridge 5F1 I7D1 8S1

- 8S2 0S2 IS' 5F2 7C1

7DI, 8S1 8S2 0S2 iS1 MT1.

5F1 7D1 I 8S1 8S2 0 S2 iSi OUT 5S2 DWI I 5F2 8S2 10/2/2002 10/2/2002 10/2/2002 10/2/2002 10/2/2002 10/2/2002 10/8/2002 10/8/2002 10/9/2002 10/9/2002 10/9/2002 10/9/2002 10/9/2002.

10/16/2002 10/16/2002 10/16/2002 10/16/2002 10/16/2002 10/16/2002 10/16/2002 10/22/2002 10/22/2002 10/22/2002 10/22/2002 10/23/2002 420DC-03_24 doc B-36

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station'No.

Collection Date 02H70 Air Particulate, Iodine Cartridge 02H71 Air Particulate, Iodine Cartridge 02H73 Vegetative Greens (Celery) 02H86 Surface Water (Seawater) 02H87 Surface Water (Seawater) 02H89 Bull Kelp Blade 02H90 Bull Kelp Pneumatocyst 02H91 Giant Kelp Blade 02H92 Giant Kelp Pneumatocyst 02H93 Bull Kelp Blade 02H94 Bull Kelp Pneumatocyst 021195 Bull Kelp Blade 02H96 Bull Kelp Pneumatocyst 02113 Vegetative Greens (Peppers) 02118 Air Particulate, Iodine Cartridge 02119 Air Particulate, Iodine Cartridge 02120'.

Air Particulate, Iodine Cartridge, 02121 Air Particulate, Iodine Cartridge 02I22 Air Particulate, Iodine Cartridge 02I23 Air Particulate, Iodine Cartridge 02124 Air Particulate, Iodine Cartridge 02128 Air Particulate, Iodine Cartridge 02129 Air Particulate, Iodine Cartridge 02130 Air Particulate, Iodine Cartridge 02I31 Air Particulate, Iodine Cartridge 0S2-liSl 7Gl

'DCM

-7C2.

PON PON DCM DCM POS POS 7C2 7C2 5F2 MT1 5F1 7D1'

8S1 8S2 0S2

'Sl MT1 -

5F1 7D1

-8S1 10/23/2002 10/23/2002 10/23/2002 10/29/2002 10/29/2002 10/30/2002 10/30/2002 10/29/2002 10/29/2002 10/30/2002 10/30/2002 10/29/2002 10/29/2002 11/5/2002 11/6/2002 11/6/2002 11/6/2002 11/6/2002 11/6/2002 11/6/2002 11/6/2002 11/13/2002 11/13/2002 11/13/2002 11/13/2002 420DC-03_24.doc B-37

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.,

Description Station No.

Collection Date 02132 02133 02I34 02140 02141

• 02142 02143 02146 02I5Z 02I53 02156 02I57 t 02I61,,.

02162 02I63 02I64 02165 02166 02167 02I71 I 02I72 02173 02I74 02176 02I77 Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge, Air Particulate, Iodine Cartridge Surface Water (Outfall)

Drinking Water Drinking Water Milk Vegetative Greens (Snow Peas)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Surface Water (Seawater)

Surface Water (Seawater)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate; Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge California Mussels Intertidal Algae California Mussels Intertidal Algae Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge 8S2 0S2 lSl OUT 5S2 DW1 SF2 7C1 0S2 iSi -

DCM 7C2 MT1 SF1 7D1 3S1 8S2 0S2 iSl DCM DCM 7C2 7C2 MT1 SF1 11/13/2002, 11/13/2002 11/13/2002 11/19/2002 11/19/2002 11/19/2002 11/19/2002 11/20/2002 11/20/2002 11/20/2002 11/26/2002 11/26/2002 11/27/2002 11/27/2002 11/27/2002 11/27/2002 11/27/2002 11/27/2002 11/27/2002 12/3/2002 12/3/2002 12/3/2002 12/3/2002 12/4/2002 12/4/2002 420DC-03_24 doc B-38

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and'Analyzed Sample No.

Description Station No.

Collection Date 02I78 r

02I79 02180 02181 02I82 02189 02I901-02I93 02I94 02195 02196 02I97 02198

• 02J00 02J01 02J02 02J03 02J04 02J05 02J12 02J13 02J14 02J15 02J16 02J17 Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Vegetative Greens (Peas)

Beach Sand Air Particulate, Iodine Cartridge Air Particuiate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate Iodine Cartridge

• Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Beach Sand (Replicate)

Surface Water (Outfall)

Drinking Water Drinking Water Milk Goat Meat Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge 7D1 8SI 8S2-0S2

-7C1 Avila Beach 5F1

• 7D1 8S1-8S2 X 0S2

• lSl-Avila Beach OUT 5S2 DW1 2-F2 On site MT1 SF1

-7D1

- 8S1 8S2 0S2 12/4/2002 12/4/2002 12/4/2002 12/4/2002 12/4/2002 12/9/2002 12/09/2002 12/11/2002 12/11/2002 12/11/2002 12/11/2002 12/11/2002 12/11/2002 12/09/2002 12/17/2002 12/17/2002 12/17/2002 12/17/2002 12/17/2002 12/18/2002 12/18/2002 12/18/2002 12/18/2002 12/18/2002 12/18/2002 420DC-03_24 doc B-39

Table B-7 (Continued)

Diablo Canyon Power Plant 2002 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 02J18 02J20 02J21 02J22 02J23 02J24 02J25 02J26 02J29 02J30 02J34 02J35 02J36 02J37 02J38 02J39 02J57 02J58 02J59 02J60 02J61 02J62 Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Surface Water (Seawater)

Surface Water (Seawater)

Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Market Fish Sediment Perch Rockfish Sediment Perch Rockfish iSi MT1 5F1 7D1 8S1 8S2 OS2

. lS1 DCM 7C2 7D1 8S1 8S2 OS2 IS1

• 7D3 DCM DCM DCM 7C2 POS POS 12/18/2002 12/24/2002 12/24/2002 12/24/2002 12/24/2002 12/24/2002 12/24/2002 12/24/2002 12/27/2002 12/27/2002 12/31/2002 12/31/2002 12/31/2002 12/31/2002 12/31/2002 12/3/2002 1/14/2003 1/14/2003 1/14/2003 1/15/2003 1/16/2003 1/1612003 420DC-03_24.doc B-40