Text

2001 Annual Radiological Environmental Operating Report
	ML021330404
Person / Time
Site:	Diablo Canyon
Issue date:	04/30/2002
From:	Oatley D; Pacific Gas & Electric Co
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	DCL-02-051
	Download: ML021330404 (94)
	v • d • e

and Pacific Gas Pacific Gas and IaIUAIn Electric Company David H.Oatley Diablo Canyon Power Plant Vice President PO. Box 56 Diablo Canyon Operations Avila Beach, CA 93424 805.545.4350 April 30, 2002 Fax: 805.545.4234 PG&E Letter DCL-02-051 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 I and 2 2001 Annual Radiolocical Environmental Operating Report

Dear Commissioners and Staff:

Enclosed is the 2001 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.

Sincerely, David H. Oatley Imp/18131R0219570 Enclosure cc: Diablo Distribution cc/enc: Edgar D. Bailey, DHS Roger W. Briggs Robert M. Carr Ellis W. Merschoff David L. Proulx Girija S. Shukla A member of the STARS (Strategic Teaming and Resource Sharing) Alliance - -

Caitaway a Comanche Peak a Diabto Canyon

Pato Verde

South Texas Project

Wolf Creek

P 0 H T RER

, E"-.- P 0 R T TES TECHNICAL AND ECOLOGICAL SERVICES

TES 2001 Annual Radiological Environmental Operating Report Diablo Canyon Power Plant Propared by R, W. Lnreaz D. L. Brownrigg E. A. Gedney April 2002 Report No.: 420DC-02.28 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) 86P-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, 2001, through December 31, 200 1. This program is conducted in accordance with DCPP Program Directive CY2, "Radiological Monitoring and Controls Program," and procedure RP1 .11, "Environmental Radiological Monitoring Procedure."

The results of the 2001 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. Four out of 36 surface water samples contained tritium above detection levels, but at levels below reporting levels for tritium. 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. One out of 77 marine samples contained other than naturally occurring radionuclides. This sample was an algae sample collected from Diablo Cove containing cobalt-58 slightly above the detection level. 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 detection levels so one can conclude that there is no increasing trend in radioactivity concentrations in algae in Diablo Cove.

420DC-02L28.doe i

CONTENTS Page 1 INTR OD UCTIO N .................................................................................................................... 1-1 DCPP ENVIRONMENTAL MONITORING PROGRAM ........................... 1-1 2 SA MPLIN G METH OD S ........................................................................................................ 2-1 AIRBO RNE RA D IOA CTIV ITY ............................................................................................... 2-1 D IRECT RAD IA TION .............................................................................................................. 2-1 W A TER SAM PLES .................................................................................................................. 2-1 MARINE BIOLOGICAL AND SEDIMENT SAMPLES ......................................................... 2-2 FO OD CROPS ........................................................................................................................... 2-2 M ILK ......................................................................................................................................... 2-2 3 SAMPLE ANALY SES ............................................................................................................. 3-1 AIRB ORN E RAD IOA CTIVITY ............................................................................................... 3-1 D IRECT RAD IA TION .............................................................................................................. 3-1 WATER SA M PLES .................................................................................................................. 3-3 MARINE BIOLOGICAL AND SEDIMENT SAMPLES ......................................................... 3-3 FOOD CROPS ........................................................................................................................... 3-3 MILK ......................................................................................................................................... 3-3 4 QUAL ITY C ONTR OL .......... ................................................................................................. 4-1 5 LAND USE CEN SU S ............................................................................................................... 5-1 6 RE SULTS AND D ISCUSSIO N .............................................................................................. 6-1 AIRBO RN E RADIOA CTIVITY ............................................................................................... 6-1 D IRECT RA DIA TION .............................................................................................................. 6-6 W ATER SA M PLES .................................................................................................................. 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 AIRBO RNE RAD IOACTIVITY ............................................................................................... 7-1 D IRECT RAD IATION .............................................................................................................. 7-3 420DC-02_28.doc ii

CONTENTS (Continued)

Page WATER SA M PLES .................................................................................................................. 7-3 A LGAE SA M PLES .................................................................................................................... 7-3 8 PRO GRAM VARIAN CE .................................................................................. :..................... 8-1 AIRBORNE RADIOACTIVITY ............................................................................................... 8-1 MARINE AND TERRESTRIAL SAMPLES ............................................................................. 8-1 9 REFE RE NC ES ......................................................................................................................... 9-1 Appendix A:

ENVIRONMENTAL RADIATION MONITORING PROGRAM SUMMARIES Appendix B:

ANALYTICAL RESULTS 420DC-02_28.doc i°°

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 A ir particulates gross beta activities ................................................................................. 6-2 5 Control Chart for Air Particulate Filters ...................................... .................. 7-2 6 Control Chart for TLD data ........................................................................... .................... 7-4 7 Control Chart for Tritium Level in Seawater ...................................................................... 7-5 8 Control Chart for Algae ....................................................................................................... 7-6 TABLES Table Page 1 Summary of the Radiological Environmental Monitoring Program ................................. 1-2 2 Distances and Directions to Environmental Monitoring Stations .................................... 14 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-10 A-10 Analytics Performance Evaluation Programs ................................................................... A- 11 420DC-02_28.doc iv

TABLES (Continued)

Table Page B-1 State Cross-Check Results ............................................................................................... B-1 B-2 Marine and Terrestrial Sample Data - Detected Nuclides ................................................. B-4 B-3 Airborne Radioactivity ...................................................................................................... B-5 B-4 Environmental Dosimetry ................................................................................................. B-19 B-5 Land Use Census ...................... .......................................................................................... B-20 B-6 Sensitivity Limits (LLD) Exceeded ...... ................ ...... I................................ B-21 B-7 List of Marine and Terrestrial Samples Collected and Analyzed .................................... B-22 420DC-02_28.doc V

Section 1 INTRODUCTION Diablo Canyon Power Plant (DCPP) consists of two Westinghouse pressurized water reactors. Unit 1 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, 2001, through December 31, 2001. 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-02 28.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 (MT 1, WN1, Gamma exposure Quarterly OSI, 5S1, 6S1, 8S1, 8S2, 5S3, 2D1, 4Dl, 5F1, 1A1, 7D2,7G2,7C1, 7F1, OB1, 7D1, 4C1, OS2, ISI, 2S1, 3S1, 4S1, 7S1, 9S1, ICI, 5C1, 3D1, 6D1, 5F3)

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

Surface water 3 stations (DCM, 7C2, Gamma isotopic, Monthly OUT) tritium Drinking water 2 stations (DW1, 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) Diablo0Cove (DCM). Gamma isotopic Quarterly if Pacific Ocean North (PON) Available Pacific Ocean South (POS)

Rattlesnake Canyon (7C2)

Milk(d) 1 station (5F2) Gamma isotopic, Monthly radioiodine Table Notation:

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

(b) See Figures 1 and 2 for locations.

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

(d) Supplemental sample.

420DC-02_28.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 (I-aliotis refescens) Rattlesnake Canyon (7C2) Available Food crops(d) 4 stations (5F2, 7G1, 7C1, Gamma isotopic Monthly if available 6C1) - (6C1 is sampled quarterly)

Table Notation:

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

(b) See Figures 1and 2 for locations.

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

(d) Supplemental sample.

420DC-02_28.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 Comer 320 0.2 (0.1)

OS2 North Gate 320 0.8 (0.5) isi 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) 4S1 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 0.13 (0.2)

DCM Diablo Cove 270 0.3 (0.2)

WN1 Northwest Guard Shack 290 0.3 (0.2) 1A1 Crowbar Canyon 327 216 (1.6)

OBI Point Buchon 325 5.8 (3.6) 1C1 Montana de Oro Campground 336 7.5 (4.7) 4C1 Clark Valley Gravel Pit 45 9.3 (5.8) 5C1 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)

.2D 1 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) 5F1 SLO Zone 1 Substation 68 17.9 (11.2) 5F2 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 Ouffall 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 1 and 2.

"**The reference point used is the dome of Unit 1 containment.

420DC-02_28.doc 1-4

Table 2 (continued)

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

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

0 - Northwest 5- East-northeast 1 - North-northwest 6- East 2 - North 7- East-southeast 3 - North-northeast 8- Southeast 4 - Northeast 9- South-southeast Y - Letter (S, A-H) represents the distance from the plant:

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

B 4 miles from plant C 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 representts the station number within the zone.

Station Code (DCM, MT1, WN1, PON, POS, OUT, DWI):

The following stations do not follow the coding system: Diablo Cove Marine (DCM), Meteorological Tower (MT1), Northwest guard shack (WN 1), Pacific Ocean North (PON), Pacific Ocean South (POS), Plant Outfall (OUT), and Drinking Water (DW1).

420DC-02_28.doc 1-5

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Diablo Canyon Power Plant Figure 1. Units I and 2 Diablo Canyon off-site stations.

970338/off-site.pc 9 420DC-02_28.doc 1-6

Figure 2. Units I and 2 Diablo Canyon on-site stations.

420DC-02_28.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 1, 7D1, 8S1 and 8S2, and at one control station 5F1.

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 prepared 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.

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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 7G 1), Mello Farm (station 7-t) alontg the,'site access road, and quarterly at a household garden (station 6C 1). 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 5F2). 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-02_28.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 ofthe filters to determine the activity concentration of gamma emitting isotopes.

Gamma isotopic analyses were also performed on the TEDA impregnated 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 an NIST-traceable cesium-137 source.

420DC-02_28.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 (pCi/L) (pCi/m 3) (pCi/kg, wet) (pCi/L) (pCi/kg, wet) (pCi/kg, dry)

Gross beta 4 1xl0"2 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 l(b) 7x10- 2 1 60 Cs-134 15 5x10"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 (-,t).

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-02_28.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-131 analysis 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-02_28.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, and 2001, 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-10. Participation included analysis of:

"* gross alpha and gross beta emitters in water

"* gross alpha and gross beta emitters on particulate filter

"* iodine-131 and gamma emitters in milk

"* tritium in water

"* iodine-131 in charcoal cartridge

"* gamma emitters in soil

"* gamma emitters in vegetation

"* gamma emitters in water TES results of these blind samples were generally acceptable using the NRC criteria for determining agreement of confirmatory radiochemical measurements (See Table A-10). The results from two of the blind samples were unacceptable: gamma emitters in soil and iodine-131 in charcoal cartridge. Both of these unacceptable results were due to a faulty efficiency calibration of a TES gamma spectrum analysis system in the March 2001. The efficiency calibration was corrected in August 2001 and marine and terrestrial samples counted with the faulty calibration were reanalyzed using the revised calibration 420DC-02_28.doc 4-1

factors. The faulty efficiency calibration did not affect the ability of the gamma spectrum analysis system to identify radionuclides in the gamma spectrum. Consequently the iodine cartridges analyzed during this period of faulty efficiency calibration did not require reanalysis. Since no iodine-131 was detected, an efficiency correction would not have resulted in revised results.

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 (SRL) and TES. The table of TES results for the 2001 cross-check program can be found in Appendix B, Table B-1. The DHS has yet to issue a report for 1999 or 2000. Since TES has been informed that these reports have a low priority with DHS, TES requested and 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 2000 (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.

420DC-02_28.doc 4-2

Section 5 LAND USE CENSUS DCPP radiation protection personnel conducted a land use census in the vicinity of DCPP for 2001. The land use census is based on 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 RPI.ID11, "Environmental Radiological Monitoring Procedure," 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 November 15'h and December 2 0 th, 2001.

The aerial survey was performed on October 10tb , 2001.

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 also slaughters about 2 goats per year for personal consumption. A farm is located on the coastal plateau in the east-southeast (ESE) sector, along the site access road. 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 2001. Two new abandoned structures were identified at 1.6 miles north northwest (NNW) of the plant. The nearest residence, relative to all sectors, is a small trailer 1.2 miles 420DC-02_28.doc 5-1

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-02_28.doc 5-2

To Monterey To Paso Robles UNITS 1 AND 2 DIABLO CANYON SITE El Gardens or Farm Ai A REesidences 1 2 3 4 SCALE IN MILES Figure 3. Units I and 2 Diablo Canyon Power Plant -Land Use Census.

970338/landuse/pcl9 420DC-02_28.doc 5--3

Section 6 RESULTS AND DISCUSSION The results for the DCPP REM!P 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 unachievable in these cases due to small sample size in case of the mixed greens sample and one iodine cartridge. The LLDs were not achieved on the other iodine cartridges due to inadvertently short counting times. The LLD for radioiodine was not achieved on one milk sample due to small recovery of iodine during the separation procedure. 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 RADIOACTMITY Air particulates and radioiodine samples were collected weekly from six indicator stations (MT1, OS2, 1S1, 7D1, 8S1, and 8S2) in the DCPP environs and one control station (5F1). A total of 362 air particulate filters and 362 iodine cartridges were collected and analyzed. No air particulates or iodine cartridges were collected for Station 5F 1 between July 11 and July 25, 2001. Two sampling periods were missed for this station. During this period, a disconnected hose in the sampling pump prevented air flow through the filter or cartridge. The data collected for the air-sampling program is summarized in Appendix A, Table A-1.

Air Particulates Gross beta activity was detected in every weekly air particulate sample collected from all indicator and control stations. The range for the indicator stations was 0.002 - 0.035 pCi/m 3 with a mean of 0.011 pCi/m 3 . The range for the control station was 0.003 - 0.032 pCi/m 3 with a mean of 0.011 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-02-28.doo 6-1

Station 8S1 Air Particulate Gross Beta Activity (2001)

.06

.05

.04 0 .03

.02.

.01 0 Station 8S2 Air Particulate Gross Beta Activity (2001)

.06 .

.05

.04 C). .03

.02 l

.01

.00 04 Cf Figure 4. continued.

990308101-8S1 and 8S2 420DC-02_28.doc 6-4

Station MT1 Air Particulate Gross Beta Activity (2001)

.06

.05

.04 E .03 0

.02

.01

.00 o, -o o0 Figure 4. continued.

990308/01 -MT1 420DC-02_28.doc 6-5

Radioiodine A total of 362 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 9.4 - 21.7 mR/qtr with a mean of 15.5 mR/qtr. The exposure level at the control station 5F1 ranged from 15.8 - 19.3 mR/qtr with a mean of 17.2 mR/qtr. The exposure levels for 2001 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 three surface water samples from DCM and in one sample from the DCPP outfail, OUT. The tritium activity levels detected in these four samples were below the reporting levels. These samples were collected during routine releases from the plant and do not represent the average tritium levels in Diablo Cove.

Iodine- 131 analysis was also performed on drinking water. Iodine- 131 was not detected in any drinking water samples. The water sample data indicates that the operation of DCPP did not have any detectable impact on the plant environs.

MARINE BIOLOGICAL AND SEDIMENT SAMPLES A total of 77 marine biological and sediment samples were collected from the indicator, control and supplemental stations. They included 36 fish samples, 15 mussel samples, 24 algae samples, and 2 ocean bottom sediment samples. Table B-7 lists the marine samples collected for 2001. 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-02_28.doc 6-6

Abalone Red abalone were not collected in 2001. 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 15 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 24 algae samples were collected from stations DCM, 7C2, PON, and POS. These samples are supplemental to the REMP. One sample collected from DCM contained a small, but detectable level of cobalt - 58. 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 31 vegetative samples were collected from four supplemental stations: Cal Poly Farm (station 5F2), Kawaoka Farm (station 7G1), 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-02_28.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) (pCi/m3 ) (pCi/kg, wet) (pCi/L) (pCilkg, 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-02_28.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 are 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 ovýerall 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 two sample media during 2001. Tritium was detected in seawater samples: collected from DCM (3 events) and collected from OUT (1 event). Co-58 was measured in an algae sample collected from DCM. The Shewart-CUSUM control charts for tritium in seawater, Co-58 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 (1985-200 1), 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-02_28.doc 7-1

DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Report - 2001 Figure 5. Control Chart for Air Particulate Filters - Difference Between Indicator and Control Station Annual Means Standard Deviations 8

6 4

2 0

-2

-4

-6

-8 JAN80 JAN84 JAN88 JAN92 JAN96 JAN00 JAN04 DATE TECHNICAL, AN. ECOLOGICAL SERVICES ealth Phvsics unit 420DC-02_28.doc 7-2

In 2001, 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 2001, tritium was detected three times in water samples collected from DCM. The current control chart for tritium in seawater from DCM is shown as Figure 7. Each event of detectible tritium activity during 2001 was below reportable levels. In each sampling event in which tritium was detected in the seawater sample from DCM, the sample was collected concurrent with a liquid release from the power plant.

Consequently, these detectible levels of tritium do not represent the ambient levels of tritiumwithin Diablo Cove.

A Shewart-CUSUM control chart was not prepared for OUT since the plant outfall is not considered an environmental sample. The radioactivity levels in the plant outfall would always be transient depending on plant release status.

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 one Iridea sample from DCM during 2001. The control chart for Co-58 in Algae is shown as Figure 8.

420DC-02_28.doc 7-3

DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Report - 2001 Figure 6. Control Chart for TLD Data - Difference Between Indicator and Control Station Annual Means Standard Deviations 8

6 4

2 0

-2

-4

-6

-8 JAN80 JAN84 JAN88 .JAN92 JAN96 JAN00 JAN04 DATE TECHNICAl, AND ECOLOGICAL SERVICES Health Phvstcs Unit 420DC-02_28.doc 7-4

DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Report - 2001 Figure 7. Control Chart for Tritium Levels in Seawater - Station DCM Standard Deviations 8

6 4

CUSUM Limit Background Mean

-2

-4

-6

- - CUSUM Volue

-8E2-- B Stondardized X

-8 I I III I I I ' ' r I1 1 I , rI T 1 T *

T * * ] ,I II I JAN96 JAN98 JAN00 JAN02 DATE TECHNICAL AND ECOLOGICAL SERVICES Health Pvsics Unit 420DC-02_28.doc 7-5

DIABLO CANYON POWER PLANT RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM Annual Re ort - 2001 Figure 8. Control Chart for Co-58 Levels in Algae- Station DCM Standard Deviations 8

6 4

2 0

-2

-4

-6

-8 JAN92 JAN04 DATE TECHNJCAL, AND ECOLOGICAL SERVICES Health Phvstcs unit 420DC-02_28.doc 7-6

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 98.7 percent. That is, on average, all samplers were up and running 98.7 percent of the time. At station 8S2, the sampler malfunctioned during the sampling period 6/6/2001 - 6/13/2001. Approximately five (5) days of sampling was lost.

Several on-site air samplers (I S1, 8S1, 8S2, and OS2) were disconnected from electrical power during intermittent power outages on-site during the week of 8/1/2001 - 8/8/2001. Approximately two (2) days of sampling was loss from each sampler during this week. At station 5F 1, the sampler malfunctioned during the periods 7/11/2001 - 7/25/2001. Approximately 14 days of sampling were lost. During the week of 10/24/2001 - 10/31/2001, the sampler at station 8S2 malfunctioned. Approximately four (4) days of sampling was lost in this event.

MARINE AND TERRESTRIAL SAMPLES Two seawater samples were lost in transit during 2000. Although it was noted in Table A-3a of the 2000 AREOR that there were no analyses for these samples, this variance was not noted in Section 8 of last years report. The seawater samples were collected from DCM and 7C2 for the month of August 2000, packed in a cooler and shipped to TES. However, the samples were never delivered to TES.

Kelp collected from DCM and vegetation sample collected from 7G1 in the fourth quarter 2001 were not forwarded to the SRL for split sampling after analyses were completed at TES. These samples are part of the State cross check program. This will again be noted in next years report when the results for the year 2001 data from cross check with the SRL is discussed.

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.

420DC-02_28.doc 8-1

Section 9 REFERENCES

1. DCPP Interdepartmental Administrative Procedure (IDAP), RP1IDI11, "Environmental Radiological Monitoring Procedure."

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

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

420DC-02_28.doc 9-1

Appendix A ENVIRONMENTAL RADIATION MONITORING PROGRAM SUMMARIES 420DC-02_28.doc

Table A-1 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 1/1/01 - 12/31/01 (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 Airborne Cartridge (pCi/m 3 )

1311 (4/362) None detected None detected 0 (362) 1.2E-1 Air Particulates Gross Beta Sta. 8S2 1.1E-2 1.1E-2(312/312) 1.1E-2(50/52) 0 (362) 1.1 mi., 1280 2.0E-3-3.1E-2 2.OE-3-3.5E-2 3.0E-3-3.2E-2 Gamma Isotopic None detected None detected 0 (362)

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-02_28.doc A-1

Table A-2 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No. 50-275 and 50-323 Location of Facility San Luis Obisp6, California Report Period 1/1/01 - 12/31/01 (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 mR/qtr Sta. 5SI Sta. 5F1 0 radiation (mR) (372) 0.4 mi, 580 21.7 mR/qtr 15.5 mR/qtr 17.2 mR/qtr (12/12) (360/360) (12/12) 20.4-22.5 mR/qtr 9.4-21.7 mR/qtr 15.8-19.3 mR/qtr 86.9 mR/yr 61.9 mR/yr 68.7 mR/yr (360/360) 37.4-86.9 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) 96 TLD packets are distributed quarterly at 32 locations.

420DC-02_28.doc A-2

Table A-3a 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 1/1/01 - 12/31/01 (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,.

Surface water Gamma Sta. DCM Sta. 7C2 0 (pCi/L) Isotopic (34) Sta. OUT 54 Mn None detected None detected 59 Fe None detected None detected 58 Co None detected None detected 60 Co None detected None detected

.65Zn 95Zr None detected None detected 95Nb None detected None detected None detected None detected 13Cs. None detected None detected 3

1 7Cs None detected None detected "sBa-La None detected None detected None detected None detected Tritium 3

Analysis (34) Sta..OUT . 1.98E4(1/12) 6.59E2(4/24)

H 0.2mi, 2700 (1.4EI-I.98E4) None detected 0 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 ,ofdetectable measurements at specified locations is indicated in parenthesis e.g., (10/12) means 10 samples out of 12 collected showed activity.

420DC-02_28.doc A-3

Table A-3b 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 1/1/01 - 12/31/01 (County, State)

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, DW1 None detected 0 (pCi/L)

Gamma Isotopic (24) 0 54 Mn None detected 59Fe 58Co None detected None detected 6°C° None detected 95Zr None detected 95Zr None detected 95 Nb 131I None detected 137Cs None detected "40Ba-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-02_28.doc A-4

Table A-4 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 1/1/01 - 12/31/01 (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., 270 54Mn None detected None detected 59Fe None detected None detected 58Co None detected None detected 6°Co None detected None detected 95Nb

" None detected None detected 137' None detected None detected Cs None detected None detected I3 None detected None detected Table Notation:

(a) Unless specified, all required LLDs were met in accordance with T'able'3.

(b) Mean and range based upon detectable measurements only. F~raction of ,lectable measurements at specified locationsis 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-02_28.doc A-5

Table A-5 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 1/1/01- 12/31/01 (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 Fish Gamma Isotopic (16) Sta. DCM Sta. DCM Sta. 7C2 0 (pCi/kg original) 0.2 mi., 270' 54Mn None detected None detected 59Fe None detected None detected 58 Co None detected None detected 60Co None detected None detected 65Zn None detected None detected None detected None detected None detected None detected 131 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-02_28.doc A-6

Table A-6 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 1/1/01 - 12/31/01 (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' 4Mn None detected None detected 59Fe None detected None detected 57Co None detected None detected 58 Co 14+7(1/8) None detected 60Co None detected None detected 1311 None detected None detected lotmAg None detected None detected 137Cs None detected None detected Table Notation:

(a) Unless specified, all required LLDs were met inaccordance 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.

These samples are supplemental samples.

420DC-02_28.doc A-7

Table A-7 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 1/1/01 - 12/31/01 (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 Sediment Gamma Isotopic (2) Sta. DCM Sta. DCM Sta. 7C2 0 (pCi/kg dry) 0.2 mi., 2700 54Mn None detected None detected 59 Fe None detected None detected 58 Co None detected None detected 60 co None detected None detected 65Zn None detected None detected None detected None detected 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-02_28.doc A-8

Table A-8 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 1/1/01 - 12/31/01 (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. 7C1, 7G1, 5F2, 0 (pCi/kg original) Isotopic (31) 6C1 1311 (1/31) None detected 1.04E2 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.

These samples are supplemental samples.

420DC-02_28.doc A-9

Appendix B ANALYTICAL RESULTS 420DC-02_28.doc

Table B-1 Diablo Canyon Power Plant 2001 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 DW1 01A30 01/22/2001 ND 12 +/- 22 ND ND 011BOO 02/20/2001 ND ND ND ND 01B67 03/20/2001 ND ND ND ND 01C37 04/24/2001 ND 9 +/- 31 ND ND 01D03 05/17/2001 ND ND ND ND 01D82 06/19/2001 ND 15 +/-:32 ND ND 01E78 07/25/2001 ND ND ND ND 01F45 08/21/2001 ND ND ND ND 01G09 09/18/2001 ND ND ND ND 01G85 10/22/2001 ND ND ND ND 011H72 11/26/2001 ND ND ND ND 01156 12/17/2001 ND ND ND ND Milk 5F2 01A31 01/22/2001 ND 1335 +/- 136 --- ND 01B01 02/20/2001 ND 1290 +/- 136 --- ND 01B68 03/20/2001 ND 1394 +/- 158 --- ND 01C38 04/24/2001 ND 1439 +/- 174 --- ND 01D04 05/17/2001 ND 1474 +/- 158 --- ND 01D83 06/19/2001 ND 1603 +/- 202 --- ND 01E56 07/23/2001 ND 1540 +/- 195 --- ND 01F46 08/21/2001 ND 1448 +/- 191 --- ND O1GIO 09/18/2001 ND 1393 +/- 157 --- ND 01G86 10/22/2001 ND 1405 +/- 158 --- ND 01H73 11/26/2001 ND 1421 +/- 165 --- ND 01157 12/17/2001 ND 1561 +/- 199 --- ND Table Notation:

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

420DC-02_28.doc B-1

Table B-1 (Continued)

Diablo Canyon Power Plant 2001 Annual Report State Cross-Check Results 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 Outfall Water OUT 01A28 01/22/2001 ND 307 +/- 48 ND --

01A98 02/20/2001 ND 350 +/- 61 ND --

01B65 03/20/2001 ND 331 +/- 35 ND --

01C35 04/24/2001 ND 358 +/- 59 ND --

O0D01 05/17/2001 ND 301 +/- 58 ND --

01D80 06/19/2001 ND 360 +/- 59 ND --

01E76 07/25/2001 ND 377 +/- 82 ND --

01F47 08/21/2001 ND 343 +/- 61 ND --

O0GI1 09/18/2001 ND 332 77 ND --

01G87 10/22/2001 ND 351 +/- 57 ND --

01H74 11/26/2001 ND 307 +/- 72 ND --

01161 12/17/2001 ND 374 +/- 56 19800 +/- 517 --

Drinking Water 5S2 01A29 01/22/200i ND ND ND ND 01A99 02/20/200 1 ND ND ND ND 01B66 03/20/2001 ND 12 +/- 32 ND ND 01C36 04/24/2001 ND 28 +/- 45 ND ND 01D02 05/17/2001 ND 6 38 ND ND 01D81 66/19/2001 ND 27 48 ND ND 01E77 07/25/2001 ND 27 46 ND ND 01F44 08/21/2001 ND 174 +/- 45 ND ND 01G08 09/18/2001 ND 182 +/- 39 ND ND 01G84 10/22/2001 ND ND ND ND 01H71 11/26/2001 ND 145 +/- 67 ND ND 01160 12/17/2001 ND ND ND ND 420DC-02_28.doc B-2

Table B-1 (Continued)

Diablo Canyon Power Plant 2001 Annual Report State Cross-Check Results Gamma Activity K-40 Activity H-3 Sample pCiIL pCi/L Activity 1-131 Activity Sample Station No. Collection Date Original Original pCi/L pCi/L Giant Kelp(b) DCM 01A59 01/23/2001 ND 12500 +/- 1280 ......

01E13 06/13/2001 ND 3137 +/- 390 ......

01F63 08/23/2001 ND 14560+/- 1800 --

Vegetable Greens(b) 7G1 01B64 03/20/2001 ND 3837 +/- 481 ......

01C77 05/07/2001 ND 3909 +/-537 ......

01F23 08/07/2001 ND 2528 351 ......

Fish(c) DCM 01B81 03/22/2001 ND 3861 +/- 565 ......

01D93 06/08/2001 ND 7427 +/- 1089 ......

01F73 08/09/2001 ND 3689 +/-472 01185 1,0/31/2001 ND 3723 +/- 445 Sediment(d) DCM 01190 10/31/2001 ND 16870 +/- 2210 --

Table Notation:

(b) Sample not split with the State.

(c) Results reported in pCi/kg of original sample.

(d) Results are reported in pCi/kg of dry sample.

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

NOTE: Any samples previously agreed to but not included were unavailable due to sample availability or hazardous conditions. Values in parentheses are less than minimum detectable activity.

420DC-02_28.doc B-3

Table B-2 Diablo Canyon Power Plant 2001 Annual Report Marine and Terrestrial Sample Data Detected Nuclides (Nonnaturally Occurring) - pCi/I Water pCi/kg Algae Sta. Collection Sam.

Description No. 58 60 54 Date No. Co Co Mn 1 37 Cs 3H Surface Water (Seawater) DCM 03/19/01 01B60 7.01E2+/-3.36E2 Surface Water (Seawater) DCM 05/24/01 01D09 4.46E2+/-3.45E2 Iridaea DCM 11/28/01 01100 14+/-7 Surface Water (Seawater) DCM 09/25/01 01 G23 6.59E3+/-5.64E2 Surface Water (Outfall) OUT 12/17/01 01161 1.98E4+/-5.17E2 420DC-02_28.doc B-4

Table B-3 Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 0S2 (pCi/m 3)

Gross Beta 3 2Sigma Gamma Scan Collection Period Volume (M ) Counting Date Activity 01/03/01-01/10/01 480.1 01/17/01 .035 .003 01/10/01-01/17/01 467.3 01/24/01 .005 .001 01/17/01-01/24/01 474.6 01/29/01 .025 .003 01/24/01-01/31/01 460.4 02/07/01 .008 .001 01/31/01-02/07/01 479.7 02/13/01 .020 .002 02/07/01-02/14/01 451.5 :02/24/01 .006 .001 02/14/01-02/21/01 460.2 03/02/01 .006 .001 02/21/01-02/28/01 451.5 03/08/01 .005 .001 02/28/01-03/07/01 458.7 03/17/01 .009 .001 03/07/01-03/14/01 456.3 03/21/01 .010 .001 03/14/01-03/21/01 452.5 03/31/01 .011 .001 03/21/01-03/28/01 461.1 04/11/01 .008 .001

03/28/01-04/04/01 449.5 04/12/01 .005 .001 04/04/01-04/11/01 453.6 04/18/01 .006 .001 04/11/01-04/18/01 463.0 04/25/01 .010 .001 04/18/01-04/25/01 461.2 05/03/01 .008 .001 04/25/01-05/02/01 437.8 05/11/01 .006 .001 05/02/01-05/09/01 423.0 05/17/01 .011 .001 05/09/01-05/16/01 427.8 P5/18/01 .013 .002 05/16/01-05/23/01 409.8 06/01/01 .006 .001 05/23/01-05/30/01 410.7 06/07/01 .008 .001 05/30/01-06/06/01 502.3 06/13/01 .008 .001 06/06/01-06/13/01 513.7 06/27/01 .005 .001 06/13/01-06/20/01 489.6 06/30/01 .006 .001 06/20/01-06/27/01 500.9 07/12/01 .008 .001 06/27/01-07/03/01 433.0 07/12/01 .007 .001 07/03/01-07/11/01 566.0 07/18/01 .008 .001 07/11/01-07/18/01 517.0 07/21/01 .005 .001 07/18/01-07/25/01 511.0 08/02/01 .003 .001 07/25/01-08/01/01 499.2 08/09/01 .004 .001

- 08/01/01-08/08/01 339.0 08/16/01 .003 .001 08/08/01-08/15/01 508.2 08/22/01 .007 .001 08/15/01-08/22/01 497.6 08/28/01 .005 .001 08/22/01-08/29/01 498.3 09/05/01 .006 .001 08/29/01-09/05/01 493.0 09/12/01 .004 .001 09/05/01-09/12/01 502.5 09/19/01 .009 .001 09/12/01-09/19/01 492.1 09/27/01 .007 .001 09/19/01-09/26/01 .501.6 10/04/01 .014 .002 420DC-02_28.doc B-5

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity 3 Station 0S2 (pCi/m )

Gross Beta Collection Period Volume (M 3) Counting Date Activity 2Sigma Gamma Scan 09/26/01-10/03/01 497.5 10/10/01 .013 .002 10/03/01-10/10/01 475.3 10/16/01 .019 .002 10/10/01-10/17/01 491.8 10/24/01 .021 .002 10/17/01-10/24/01 499.9 10/30/01 .019 .002 10/24/01-10/31/01 492.7 11/07/01 .019 .002 10/31/01-11/07/01 504.7 11/15/01 .019 .002 11/07/01-11/14/01 479.1 11/21/01 .022 .002 11/14/01-11/21/01 496.5 11/28/01 .014 .002 11/21/01-11/28/01 509.8 12/05/01 .009 .001 11/28/01-12/05/01 496.2 12/13/01 .008 .001 12/05/01-12/12/01 485.7 12/19/01 .008 .001 12/12/01-12/19/01 485.2 12/26/01 .009 .001 12/19/01-12/26/01 483.3 01/03/02 .008 .001 12/26/01-01/02/02 499.9 01/09/02 .016 .002

Gamma Activity On Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/m 3) 01/03/01-03/28/01 4/24/2001 ND 03/28/01-07/03/01 8/15/2001 ND 07/03/01-10/03/01 11/27/2001 ND 10/03/01-01/02/02 1/22/2002 ND

1131 LLD not met AR#A0529791

- Power failure AR#A0541324 Table Notation:

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

420DC-02_28.doc B-6

Table B-3 (Continued)

Diablo. Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 1S1 (pCi/m3)

Counting Gross Beta Gamma Scan Collection Period Volume (m3) Date Activity 2Sigma 01/03/01-01/10/01 483.0 01/17/01 .033 .003 01/10/01-01/17/01 485.5 01/24/01 .005 .001 01/17/01-01/24/01 491.5 01/29/01 .023 .002 01/24/01-01/31/01 483.9 02/07/01 .007 .001 01/31/01-02/07/01 494.3 02/13/01 .020 .002 02/07/01-02/14/01 472.2 02/24/0 1 .005 .001 02/14/01-02/21/01 482.9 03/02/01 .008 .001 02/21/01-02/28/01 476.3 03/08/01 .005 .001 02/28/01-03/07/01 480.4 03/17/01 .010 .001 03/07/01-03/14/01 480.7 03/21/01 .010 .001 03/14/01-03/21/01 479.9 03/31/01 .011 .001 03/21/01-03/28/01 484.4 04/11/01 .008 .001

"*03/28/01-04/04/01 467.2 04/13/01 .006 .001 04/04/01-04/11/01 475.6 04/18/01 .005 .001 04/11/01-04/18/01 479.6 04/25/01 .010 .001 04/18/01-04/25/01 485.3 05/03/01 .008 .001 04/25/01-05/02/01 488.1 05/11/01 .007 .001 05/02/01-05/09/01 470.1 05/17/01 .014 .002 05/09/01-05/16/01 487.1 05/18/01 .014 .002 05/16/01-05/23/01 467.7 :,... 06/0110!1: .008 .001 05/23/01-05/30/01 468.6 . ...-06/07/01. S.-.....

007 .001 05/30/01-06/06/01 473.4 06/13/01 .008 .001 06/06/01-06/13/01 477.7 06/27/01 .005 .001 06/13/01-06/20/01 467.8 06/30/01 .006 .001 06/20/01-06/27/01 458.5 07/12/01 .008 .001 06/27/01-07/03/01 397.4 07/12/01 .007 .001 07/03/01-07/11/01 511.9 07/18/01 .009 .001 07/11/01-07/18/01 524.4 07/21/01 .006 .001 07/18/01-07/25/01 519.1 08/02/01 .003 .001 07/25/01-08/01/01 501.1 08/09/01 .004 .001

- 08/01/01-08/08/01 313.5 08/16/01 .004 .001 08/08/01-08/15/01 452.2 08/22/01 .007 .001 08/15/01-08/22/01 436.8 08/29/01 .005 .001 08/22/01-08/29/01 437.1 09/06/01 .007 .001 08/29/01-09/05/01 434.3 09/12/01 .005 .001 09/05/01-09/12/01 443.1 09/19/01 .010 .001 09/12/01-09/19/01 437.2 09/27/01 .009 .001 09/19/01-09/26/01 441.1 10/04/01 .013 .002 420DC-02_28.doc B-7

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 1S1 (pCi/m3)

Gross Beta 3

Collection Period Volume (m ) Counting Date Activity 2Sigma Gamma Scan 09/26/01-10/03/01 447.7 10/10/01 .022 .002 10/03/01-10/10/01 423.8 10/16/01 .017 .002 10/10/01-10/17/01 442.6 10/24/01 .021 .002 10/17/01-10/24/01 481.5 10/30/01 .017 .002 10/24/01-10/31/01 483.1 11/07/01 .017 .002 10/31/01-11/07/01 487.0 11/15/01 .019 .002 11/07/01-11/14/01 466.2 11/21/01 .023 .002 11/14/01-11/21/01 486.7 11/28/01 .016 .002 11/21/01-11/28/01 408.5 12/05/01 .009 .001 11/28/01-12/05/01 419.6 12/13/01 .008 .001 12/05/01-12/12/01 427.5 12/19/01 .010 .001 12/12/01-12/19/01 444.5 12/26/01 .009 .001 12/19/01-12/26/01 448.4 01/03/02 .010 .001 12/26/01-01/02/02 467.5 01/09/02 .013 .001 Gamma Activity On Filter Composites

.,Counting Concentration Collection Period Date Nuclide (pCi/m3)

.01/03/01-03/28/01 4/24/2001 ND 03/28/01-07/03/01 8/14/2001 ND 07/03/01-10/03/01 11/28/2001 ND 10/03/01-01/02/02 1/18/2002 ND

"*1131 LLD not met AR#A0529791

- Power failure AR#A0541325 Table Notation:

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

420DC-02_28.doc B-8

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 5F1 (pCi/m 3)

Gross Beta Collection Period Volume (m3) Counting Date Activity 2Sigma Gamma. Scan 01/03/01-01/10/01 533.9 01/17/01 .032 .003 01/10/01-01/17/01 526.0 01/23/01 .005 .001 01/17/01-01/24/01 528.8 01/29/01 .028 .003 01/24/01-01/31/01 518.0 02/06/01 :.008 .001 01/31/01-02/07/01 512.9 02/13/01 .019 .002 02/07/01-02/14/01 482.0 02/24/01 .006 .001 02/14/01-02/21/01 490.6 03/01/01 .008 .001 02/21/01-02/28/01 487.8 03/08/01 .005 .001 02/28/01-03/07/01 474.1 03/16/01 .008 .001 03/07/01-03/14/01 495.2 .03/20/01 .009 .001 03/14/01-03/21/01 488.7 03/30/01 .012 .001 03/21/01-03/28/01 494.2 04/10/01 .007 .001 03/28/01-04/04/01 475.1 04/12/01 .005 .001 04/04/01-04/11/01 482.1 04/17/01 .007 .001 04/11/01-04/18/01 487.8 04/25/01 .008 .001 04/18/01-04/25/01 481.3 05/02/01 .007 .001 04/25/01-05/02/01 480.3 05/11/01 .006 .001 05/02/01-05/09/01 394.8 05/16/01 .013 .002 05/09/01-05/16/01 444.1 05/18/01 .018 .002

'06/0]*)O1" 05/16/01-05/23/01 449.1 .007 .001 05/23/01-05/30/01 454.5 06/07/01 .008 .001 05/30/01-06/06/01 483.0 06/12/01 .010 .001 06/06/01-06/13/01 485.4 "-06/26/01 .005 .001 06/13/01-06/20/01 479.5 06/29/01 .008 .001 06/20/01-06/27/01 456.5 07/12/01 .008 .001 06/27/01-07/03/01 379.0 07/12/01 .008 .001 07/03/01-07/11/01 554.5 07/17/01 .008 .001

"*07/11/01-07/18/01 0.2 N/A N/A N/A

07/18/01-07/25/01 N/A N/A N/A N/A 07/25/01-08/01/01 510.8 08/09/01 .004 .001 08/01/01-08/08/01 416.3 08/14/01 .003 .001 08/08/01-08/15/01 401.3 08/22/01 .007 .001 08/15/01-08/22/01 413.0 08/28/01 .006 .001 08/22/01-08/29/01 437.7 09/05/01 .006 .001 08/29/01-09/05/01 437.9 09/11/01 .007 .001 09/05/01-09/12/01 463.9 09/18/01 .010 .001 09/12/01-09/19/01 458.0 09/26/01 .007 .001 09/19/01-09/26/01 461.5 10/03/01 .012 .001 420DC-02_28.doc B-9

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity "Station 5F1 (pCi/m 3)

Gross Beta Collection Period Volume (mi3 ) Counting Date Activity 2Sigma Gamma Scan 09/26/01-10/03/01 461.7 10/10/01 .013 .001 10/03/01-10/10/01 442.7 10/16/01 .015 .002 10/10/01-10/17/01 462.0 10/24/01 .022 .002 10/17/01-10/24/01 444.4 10/30/01 .017 .002 10/24/01-10/31/01 460.3 11/07/01 .018 .002 10/31/01-11/07/01 458.1 11/14/01 .016 .002 11/07/01-11/14/01 440.6 11/21/01 .021 .002 11/14/01-11/21/01 454.7 11/27/01 .014 .002 11/21/01-11/28/01 462.5 12/05/01 .009 .001 11/28/01-12/05/01 460.6 12/13/01 .008 .001 12/05/01-12/12/01 466.6 12/19/01 .008 .001 12/12/01-12/19/01 472.1 12/26/01 .009 .001 12/19/01-12/26/01 472.0 01/02/02 .013 .001 12/26/01-01/02/02 471.3 01/08/02 .014 .002 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/m3) 01/03/01-03/28/01 4/24/2001 ND 03/28/01-07/03/01 8/15/2001 ND 07/03/01-10/03/01 11/27/2001 ND 10/03/01-01/02/02 1/18/2002 ND

Disconnected hose AR#A0537995 Table Notation:

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

420DC-02_28.doc B-10

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 7D1 (pCi/m3)

Counting Gross Beta Collection Period Volume (mi )3 Date Activity 2Sigma Gamma Scan 01/03/01-01/10/01 470.8 01/17/01 .032 .003 01/10/01-01/17/01 471.5 01/23/01 .006 .001 01/17/01-01/24/01 477.4 01/29/01 .024 .002 01/24/01-01/31/01 472.1 02/06/01 .008 .001 01/31/01-02/07/01 443.3 02/13/01 .018 .002 02/07/01-02/14/01 424.2 02/24/01 .006 .001 02/14/01-02/21/01 435.0 03/01/01 .008 .001 02/21/01-02/28/01 432.2 03/08/01 .005 .001 02/28/01-03/07/01 439.9 03/16/01 .009 .001 03/07/01-03/14/01 442.3 03/21/01 .009 .001 03/14/01-03/21/01 445.2 03/30/01 .012 .001 03/21/01-03/28/01 450.5 04/11/01 .008 .001 03/28/01-04/04/01 440.7 04/12/01 .005 .001 04/04/01-04/11/01 445.6 04/17/01 .007 .001 04/11/01-04/18/01 441.7 04/25/01 .009 .001 04/18/01-04/25/01 447.8 05/03/01 .009 .001 04/25/01-05/02/01 450.5 05/11/01 .008 .001 05/02/01-05/09/01 411.4 05/16/01 .014 .002 05/09/01-05/16/01 445.3 -05/8/01V .019 .002 05/16/01-05/231/0 437.9 -. 06/01/01 -.009 .001 05/23/01-05/30/01 447.1 06/07/01 .008 .001 05/30/01-06/06/01 459.9 06/12/01 .009 ý.001 06/06/01-06/13/01 456.0 06/26/01 .007 .001 06/13/01-06/20/01 448.8 06/29/01 .007 .001 06/20/01-06/27/01 448.8 07/12/01 .008 .001 06/27/01-07/03/01 389.6 07/12/01 .007 .001 07/03/01-07/11/01 512.6 07/17/01 .009 .001 07/11/01-07/18/01 490.8 07/21/01 .009 .001 07/18/01-07/25/01 497.6 08/02/01 .003 .001 07/25/01-08/01/01 476.6 08/09/01 .005 .001 08/01/01-08/08/01 438.4 08/14/01 .002 .001 08/08/01-08/15/01 445.1 08/22/01 .008 .001 08/15/01-08/22/01 441.2 08/29/01 .005 .001 08/22/01-08/29/01 455.9 09/05/01 .007 .001 08/29/01-09/05/01 449.1 09/11/01 .005 .001 09/05/01-09/12/01 464.0 09/18/01 .010 .001 420DC-02_28.doc B-11I

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 7D1 (pCi/m3)

Gross Beta Collection Period Volume (mi) Counting Date Activity 2Sigma Gamma Scan 09/12/01-09/19/01 453.8 09/26/01 .008 .001 09/19/01-09/26/01 460.1 10/03/01 .015 .002 09/26/01-10/03/01 463.0 10/10/01 .016 .002 10/03/01-10/10/01 441.4 10/16/01 .015 .002 10/10/01-10/17/01 475.5 10/24/01 .022 .002 10/17/01-10/24/01 459.9 10/30/01 .017 .002 10/24/01-10/31/01 456.8 11/07/01 .019 .002 10/31/01-11/07/01 475.4 11/14/01 .020 .002 11/07/01-11/14/01 443.3 11/21/01 .022 .002 11/14/01-11/21/01 453.8 11/27/01 .016 .002 11/21/01-11/28/01 460.6 12/05/01 .008 .001 11/28/01-12/05/01 455.9 12/13/01 .008 .001 12/05/01-12/12/01 459.4 12/19/01 .008 .001 12/12/01-12/19/01 460.9 12/26/01 .011 .001 12/19/01-12/26/01 456.1 01/02/02 .011 .001 12/26/01-01/02/02 467.1 01/08/02 .014 .002 Gamma Activity on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/m3) 01/03/01-03/28/01 4/24/2001 ND 03/28/01-07/03/01 8/15/2001 ND 07/03/01-10/03/01 11/27/2001 ND 10/03/01-01/02/02 1/18/2002 ND Table Notation:

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

420DC-02_28.doc B-12

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 01/03/01-01/10/01 470.9 01/17/01 .033 .003 01/10/01-01/17/01 477.4 01/24/01 .005 .001 01/17/01-01/24/01 477.3 01/29/01 .027 .003 01/24/01-01/31/01 471.0 02/06/01 .007 .001 01/31/01-02/07/01 486.0 02/13/01 .020 .002 02/07/01-02/14/01 463.0 02/24/01 .006 .001 02/14/01-02/21/01 473.1 03/01/01 .007 .001 02/21/01-02/28/01 453.3 03/08/01 .005 .001 02/28/01-03/07/01 479.6 03/17/01 .009 .001 03/07/01-03/14/01 480.8 03/21/01 .009 .001 03/14/01-03/21/01 478.7 03/30/01 .011 .001 03/21/01-03/28/01 486.5 04/11/01 .007 .001 03/28/01-04/04/01 471.6 04/12/01 .005 .001 04/04/01-04/11/01 479.7 04/17/01 .006 .001 04/11/01-04/18/01 478.8 04/25/01 .010 .001 04/18/01-04/25/01 479.9 05/03/01 .008 .001 04/25/01-05/02/01 477.2 05/11/01 .006 .001 05/02/01-05/09/01 474.4 05/17/01 .013 .001 05/09/01-05/16/01 490.1 05/18/01 .013 .002 05/16/01-05/23/01 480.7 06/01/01 .006 .001 05/23/01-05/30/01 482.0 06/07/01 .008 .001 05/30/01-06/06/01 485.4 06/12/01 .008 .001 06/06/01-06/13/01 488.8 06/26/01' .005 .001 06/13/01-06/20/01 471.4 06/29/01 .007 .001 06/20/01-06/27/01 477.8 07/12/01 .007 .001 06/27/01-07/03/01 409.6 07/12/01 .006 .001 07/03/01-07/11/01 541.1 07/18/01 .008 .001 07/11/01-07/18/01 500.1 07/21/01 .005 .001 07/18/01-07/25/01 499.9 08/02/01 .003 .001 07/25/01-08/01/01 490.7 08/09/01 .004 .001

08/01/01-08/08/01 373.3 08/15/01 .002 .001 08/08/01-08/15/01 499.7 08/22/01 .008 .001 08/15/01-08/22/01 490.1 08/28/01 .005 .001 08/22/02-08/29/01 496.8 09/05/01 .006 .001 08/29/01-09/05/01 489.4 09/11/01 .005 .001 09/05/01-09/12/01 506.7 09/19/01 .010 .001 09/12/01-09/19/01 495.1 09/27/01 .007 .001 09/19/01-09/26/01 500.2 10/04/01 .013 .001 420DC-02_28.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 09/26/01-10/03/01 508.2 10/10/01 .029 .003 10/03/01-10/10/01 479.0 10/16/01 .017 .002 10/10/01-10/17/01 505.4 10/24/01 .022 .002 10/17/01-10/24/01 507.5 10/30/01 .017 .002 10/24/01-10/31/01 501.3 11/07/01 .017 .002 10/31/01-11/07/01 512.8 11/14/01 .016 .002 11/07/01-11/14/01 485.6 11/21/01 .021 .002 11/14/01-11/21/01 500.2 11/27/01 .015 .002 11/21/01-11/28/01 462.7 12/05/01 .008 .001 11/28/01-12/05/01 459.8 12/13/01 .008 .001 12/05/01-12/12/01 460.0 12/19/01 .010 .001 12/12/01-12/19/01 458.6 12/26/01 .012 .001 12/19/01-12/26/01 449.7 01/03/02 .009 .001 12/26/01-01/02/02 458.3 01/08/02 .013 .001

Gamma Activity on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/m 3) 01/03/01-03/28/01 4/24/2001 ND 03128/01-07/03/01 8/15/2001 ND 07/03/01-10/03/01 11127/2001 ND 10/03/01-01/02/02 1/18/2002 ND

Power failure AR#A0541323 Table Notation:

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

420DC-02_28.doc 13-14

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 8S2 (pCi/m 3)

Gross Beta Collection Period Volume (M 3) Counting Date Activity, 2Sigma Gamma.Scan 01/03/01-01/10/01 482.9 01/17/01 .031 .003 01/10/01-01/17/01 491.3 01/24/01 .006 .001 01/17/01-01/24/01 496.9 0 1/29/0 1 .024 .002 01/24/01-01/31/01 489.8 02/06/01 .009 .001 01/31/01-02/07/01 502.9 02/13/01 .020 .002 02/07/01-02/14/01 475.7 02/24/01 .006 .001 02/14/01-02/21/01 490.4 03/02/01 .008 .. 001 02/21/01-02/28/01 482.5 03/08/01 .004 .001 02/28/01-03/07/01 475.1 03/18/01 .010 .001 03/07/01-03/14/01 482.1 03/21/01 .009 .001 03/14/01-03/21/01 479.7 03/31/01 .010 .001 03/21/01-03/28/01 492.2 04/11/01 .010 .001

"*03/28/01-04/04/01 477.0 04/12/01 .006 .001 04/04/01-04/11/01 474.4 04/17/01 .006 .001 04/11/01-04/18/01 479.6 04/25/01 .011 .001 04/18/01-04/25/01 503.1 05/03/01 .008 .001 04/25/01-05/02/01 503.1 05/11/01 .007 .001 05/02/01-05/09/01 513.8 05/17/01 .015 .002 05/09/01-05/16/01 51.1.2. ,5..8(015 . .015 .002 05/16/01-05/23/01 53.3.51 ..Q6/1Oi0t. .008 .001 05/23/01-05/30/01 498.2 06/07/01 .008 .001

. .008, 05/30/01-06/06/01 508.1 06/12/01 .001

- 06/06/01-06/13/01 116.9 06/27/01 .011 .003 06/13/01-06/20/01 457.0 06/30/01 .006 .001 06/20/01-06/27/01 449.9 07/12/01 .008 .001 06/27/01-07/03/01 393.2 07/12/01 .007 .001 07/03/01-07/11/01 506.8 07/18/01 .009 .001 07/11/01-07/18/01 514.3 07/21/01 M006 .001 07/18/01-07/25/01 503.8 08/02/01 .003 .001 07/25/01-08/01/01 488.8 08/09/01 .004 .001

- - 08/01/01-08/08/01 348.5 08/15/01 .002 .001 08/08/01-08/15/01 496.8 08/22/01 .007 .001 08/15/01-08/22/01 486.1 08/29/01 .005 .001 08/22/01-08/29/01 507.3 09/05/01 .006 .001 08/29/01-09/05/01 496.6 09/12/01 .005 .001 09/05/01-09/12/01 518.4 09/19/01 .010 .001 09/12/01-09/19/01 500.4 09/27/01 .010 .001 09/19/01-09/26/01 504.9 10/04/01 .026 .003 420DC-02_28.doc B-15

Table B-3 (Continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station 8S2 (pCi/m 3)

Gross Beta Collection Period Volume (m3) Counting Date Activity 2Sigma Gamma Scan 09/26/01-10/03/01 504.4 10/10/01 .013 .001 10/03/01-10/10/01 480.0' 10/16/01 .027 .003 10/10/01-10/17/01 499.1 10/24/01 .023 .002 10/17/01-10/24/01 520.6 10/30/01 .017 .002

- - '10/24/01-10/31/01 171.3 11/07/01 .019 .003 10/31/01-11/07/01 456.9 11/15/01 .020 .002 11/07/01-11/14/01 428.5 11/21/01 .023 .002 11/14/01-11/21/01 445.9 11/28/01 .015 .002 11/21/01-11/28/01 446.6 12/05/01 .010 .001 11/28/01-12/05/01 446.0 12/13/01 .009 .001 12/05/01-12/12/01 449.3 12/19/01 .009 .001 12/12/01-12/19/01 444.5 12/26/01 .010 .001 12/19/01-12/26/01 436.7 01/03/02 .010 .001 12/26/01-01/02/02 447.7 01/09/02 .013 .001 Gamma Activity on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/m 3) 01/03/01-03/28/01 4/26/2001 ND 03/28/01-07/03/01 8/15/2001 ND 07/03/01-10/03/01 11/27/2001 ND 10/03/01-01/02/02 1/18/2002 ND

Equipment malfunction AR#A0529791

"**Equipment malfunction AR#A0536298

- - Power failure AR#AO54l313

"****Equipment malfunction AR#A0545817 Table Notation:

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

420DC-02_28.doc B-16

Table B-3 (continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station MT1 (pCi/m3)

Gross Beta Collection Period 3 Volume (mi ) Counting Date Activity 2Sigma Gamma Scan 01/03/01-01/10/01 428.1 01/17/01 .034 .003 01/10/01-01/17/01 459.9 01/23/01 .006 .001 01/17/01-01/24/01 497.6 01/29/01 .023 .002 01/24/01-01/31/01 482.7 02/06/01 .008 .001 01/31/01-02/07/01 513.7 02/13/01 .021 .002 02/07/01-02/14/01 492.3 02/24/01 .007 .001 02/14/01-02/21/01 495.6 03/01/01 .008 .001 02/21/01-02/28/01 483.3 03/07/01 .005 .001 02/28/01-03/07/01 493.7 03/16/01 .010 .001 03/07/01-03/14/01 512.6 .03/20/01 .009 .001 03/14/01-03/21/01 523.9 03/30/01 .008 .001 03/21/01-03/28/01 "526.2 04/10/01 .008 .001 03/28/01-04/04/01 512.6 04/12/01 .005 .001 04/04/01-04/11/01 520.9 04/17/01 .007 .001 04/11/01-04/18/01 478.3 04/25/01 .010 .001 04/18/01-04/25/01 467.9 05/02/01 .008 .001 04/25/01-05/02/01 460.7 05/11/01 .006 .001 05/02/01-05/09/01 442.7 05/16/01 .013 .002 05/09/01-05/16/01 463.8 05/18/01 .014 .002 05/16/01-05/23/01 455.3 -,,....* Q6( /.Q 1... .001 05/23/01-05/30/01 456.2 06/07/01 .008

.001 05/30/01-06/06/01 459.6 06/12/01 .007 .001 06/06/01-06/13/01 462.9 06/26/01 .004 .001 06/13/01-06/20/01 453.0 06/29/01 .005 .001 06/20/01-06/27/01 448.6 07/12/01 .007 .001 06/27/01-07/03/01 397.1 07/12/01 .006 .001 07/03/01-07/11/01 515.3 07/17/01 .006 .001 07/11/01-07/18/01 525.9 07/20/01 .006 .001 07/18/01-07/25/01 523.6 08/01/01 .003 .001 07/25/01-08/01/01 510.4 08/09/01 .004 .001 08/01/01-08/08/01 522.9 08/14/01 .003 .001 08/08/01-08/15/01 497.2 08/22/01 .006 .001 08/15/01-08/22/01 493.1 08/28/01 .005 .001 08/22/02-08/29/01 497.1 09/05/01 .006 .001 08/29/01-09/05/01 492.7 09/11/01 .005 .001 09/05/01-09/12/01 514.2 09/19/01 .011 .001 09/12/01-09/19/01 500.2 09/26/01 .006 .001 420DC-02_28.doc B-17

Table B-3 (continued)

Diablo Canyon Power Plant 2001 Annual Report Airborne Radioactivity Station MT1 (pCi/m3)

Gross Beta Collection Period Volume (M3) Counting Date Activity 2Sigma Gamma Scan 09/19/01-09/26/01 513.7 10/03/01 .015 .002 09/26/01-10/03/01 517.9 10/09/01 .014 .002 10/03/01-10/10/01 488.9 10/16/01 .017 .002 10/10/01-10/17/01 511.2 10/23/01 .020 .002 10/17/01-10/24/01 463.9 10/30/01 .017 .002 10/24/01-10/31/01 464.8 11/07/01 .018 .002 10/31/01-11/07/01 477.5 11/14/01 .018 .002 11/07/01-11/14/01 451.3 11/21/01 .021 .002 11/14/01-11/21/01 469.4 11/27/01 .015 .002 11/21/01-11/28/01 466.8 12/04/01 .007 .001 11/28/01-12/05/01 467.7 12/12/01 .009 .001 12/05/01-12/12/01 461.9 12/19/01 .010 .001 12/12/01-12/19/01 468.2 12/26/01 .009 .001 12/19/01-12/26/01 459.4 01/02/02 .010 .001 12/26/01-01/02/02 471.3 01/08/02 .015 .002

Gamma Activity..on Filter Composites Concentration Collection Period Counting Date Nuclide (pCi/m3 )

01/03/01-03/28/01 4/24/2001 ND 03/28/01-07/03/01 8/15/2001 ND 07/03/01-10/03/01 11/27/2001 ND 10/03/01-01/02/02 1/17/2002 ND Table Notation:

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

420DC-02_28.doc B-18

Table B-4 Diablo Canyon Power Plan 2001 Annual Report Environmental Doismetry Quarterly Total (mR) (a) . Annual Quarterly Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr Total Avg +/-2a MT1 20.7 +/- 0.7 19.1 +/- 0.5 20.8 +/- 0.5 20.6 +/- 0.6 81.2 20.3 1.6 WN1 11.4+/-0.2 11.0 +/-0.3 11.8_+/-0.3 12.1 +/-0.4 -46.3 11.6 1.0 OS1 19.8 +/- 0.7 18.9 +/- 0.5 20.1 +/- 0.5 19.9 +/- 0.4 78.7 19.7 1.1 5S1 22.0 +/- 0.5 20.4 +/- 0.6 21.9 +/- 0.6 22.5 +/- 0.8 86.9 21.7 1.8 6S1 12.7+/-0.4 12.5+/-0.3 13.2+/-0.3 13.2+/-0.3 51.6 12.9 0.7 8S1 15.0 +/- 0.8 14.7 +/- 0.3 15.5 +/- 0.3 15.6 +/- 0.5 60.8 15.2 0.8 8S2 19.5 +/- 0.3 18.2 +/- 0.3 19.2 +/- 0.5 20.8 +/- 0.5 77.6 19A 2.1 5S3 17.2 +/- 0.3 16.7 +/- 0.6 17.7 +/- 0.5 18.4 +/- 0.3 70.0 17.5 1.5 2D1 11.1 +/-0.2 10.8-+/-0.3 11.2_+/-0.3 11.3 +/-0.5 44.4 11.1 0.4 4D1 10.3 +/-0.3 10.0+/-0.4 10.7+/-0.2 11.2+/-0.4 42.2 10.5 1.0 5F1 16.8 +/- 0.5 15.8 +/- 0.4 16.8 +/- 0.6 19.3 +/- 1.9 68.7 17.2 3.0 IAM 10.7 +/-0.3 10.2_+/-0.3 10M8+/-0.3 11.4_+/-0.3 43.1 10.8 1.0 7D2 14.9 +/- 0.5 14.7 +/- 0.5 15.9 +/- 0.5 15.6 +/- 0.3 61.2 15.3 1.2 7G2 15.7 +/- 0.7 15.6+/- 0.2 15.9 +/- 0.4 16.5 +/- 0.6 63.7 15.9 0.8 7C1 16.5 +/- 0.3 16.2 + 0.5 17.1 +/- 0.3 17.1 + 0.5 66.9 16.7 0.9 7F1 15+/-8 0.5 15.2 +/- 0.5 15.4 +/- 0.5 15.9 +/-.0.3 62.3 15.6 . 0.7 OBI 9.1 +/- 0.2 9.3 +/- 0.3 9.5 +/- 0.3 9.5 +/- 0.3 37.4 9.4 0.4 7D1 10.3-+/-0.3 10.2-+/-0.2 10.9 +/-0.3 11.0+/-0.3 42.3 10.6 0.8 4CI 9.8 +/- 0.2 9.8 +/- 0.2 10.2 +/- 0.3 10.3 +/- 0.2 40.0 10.0 0.5 OS2 16.4 +/- 0.4 15.9+/-0.5 16:4A_.+/-065-o :16.2 +/- 0.4 64.9 16.2 0.5 1S1 16.1 +/-+0.6 15.8+/-0.4 16.4-0.4. 16.4+/-0.4 64.8' 16.2 0.6 2S1 15.8 +/- 0.7 15.7 +/-50.3 16.0 0.3 16.3 +/- 0.4 63.7 15.9 0.5 3S1 19.1 +/- 0.6 20.1 +/- 0.5 20.7 0.6 21.0 +/-2.0 80.9 20.2 1.7 4S1 17.2 +/- 0.4 17.4 +/- 0.2 18.2 +/-0.3 17.9 +/- 0.6 70.7 17.7 0.9 7S1 16.6 +/- 0.4 16.5 +/- 0.6 17.4 +/- 0.3 17.1 +/- 0.4 67.5 16.9 0.8 9S1 20.0 +/- 0.4 20.2 +/- 0.8 21.5 0.5 21.0 +/- 0.6 82.6 20.7 1.4 iCi 12.1 +/-0.3 12.4+/- 0.3 12.7+/-0.4 12.9 +/-0.5 50.1 12.5 0.7 5CI 14.2 +/- 0.2 14.6 +/- 0.3 16.0+/- 0.5 15.8 +/- 0.5 60.6 15.1 1.8 3D1 11.6+/-0.4 11.2+/-0.3 12.2+/-0.4 12.4 +/-0.4 47.4 11.9 1.1 6D1 14.6 +/- 0.5 14.1 +/- 0.3 15.8 +/- 0.7 16.2 +/- 0.4 60.7 15.2 2.0 5F3 21.0 +/- 0.5 20.1 +/- 0.5 22.1 +/-0.7 22.0 +/- 0.6 85.2 21.3 1.9 Table Notation:

(a)The exposure (mR) has been normalized for a standard quarter (i.e., for a 90-day period).

420DC-02_28.doc B-19

Table B-5 Land Use Census 2001 Distance in Miles from the Unit I Center Line to the Nearest Milk Animal, Residence, Vegetable Garden Nearest Nearest Residence Vegetable 221/2Degree(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)0b SE None None None Table Notation:

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

(b) 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-02_28.doc B-20

B-6 STable Diablo Canyon Power Plant 2001 Annual Report Sensitivity Limits (LLD) Exceeded*

Sample Station No. Date-Collected 1311*

Mixed Greens 6C1 10/19/01 1.04E2 Milk 5F2 12/17/01 1.04E0 Air Particulate 8S2 04/04/01 7.5E-2 Air Particulate 8S2 06/13/01- 1.2E- 1 Air Particulate 0S2 04/04/01 9.OE-2 Air Particulate iS 1 04/04/01 7.03E-2 Table Notation:

Table Lists all samples for which the sensitivity limits did not meet the values on Table 3.

- Results are reported in pCi/L for liquids; in pCi/m 3, for iodine cartridges; and pCi/kg, for fish and food crops.

420DC-02_28.doc B-21

Table B-7 Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date O0A01 Goat Meat 1/5/2001 01A02 Market Fish 7D3 1/9/2001 01A03 California Mussels DCM 1/9/2001 01A04 Intertidal Algae. DCM 1/9/2001 01A05 California Mussels 7C2 1/9/2001 01A06 Intertidal Algae 7C2 1/9/2001 01A09 Air Particulate, Iodine Cartridge MT1 1/10/2001 01A10 Air Particulate, Iodine Cartridge 5F1 1/10/2001 01AllI Air Particulate, Iodine Cartridge 7D1 1/10/2001 0tA12 Air Particulate, Iodine Cartridge 8S1 1/10/2001 01A13 Air Particulate, Iodine Cartridge 8S2 1/10/2001 01A14 Air Particulate, Iodine Cartridge 0S2 1/10/2001 01A15 Air Particulate, Iodine Cartridge ISi 1/10/200.1 01A18 Air Particulate, Iodine Cartridge MT1 1/17/2001 01A19 Air Particulate, Iodine Cartridge 5F1 1/17/2001 01A20 Air Particulate, Iodine Cartridge 7D1 1/17/2001 01A21 Air Particulate, Iodine Cartridge 8S1 1/17/2001 01A22 Air Particulate, Iodine Cartridge 8S2 1/17/2001 01A23 Air Particulate, Iodine Cartridge 0S2 1/17/2001 01A24 Air Particulate, Iodine Cartridge 1Si 1/17/2001 01A28 Surface Water (Outfall) OUT 1/22/2001 01A29 Drinking Water 5S2 1/22/2001 01A30 Drinking Water DW1 1/22/2001 01A31 Milk 5F2 1/22/2001 01A32 Surface Water (Seawater) DCM 1/23/2001 420DC-02_28.doc B-22

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01A33 Surface Water (Seawater) 7C2 1/23/2001 01A36 Air Particulate, Iodine Cartridge MT1 1/24/2001 01A37 Air Particulate, Iodine Cartridge 5F1 1/24/2001 01A38 Air Particulate, Iodine Cartridge. 7D1 1/24/2001 01A39 Air Particulate, Iodine Cartridge 8S1 1/24/2001 01A40 Air Particulate, Iodine Cartridge 8S2 1/24/2001 o1A41 Air Particulate, Iodine Cartridge 0S2 1/24/2001 01A42 Air Particulate, Iodine Cartridge iS i 1/24/2001 01A56 Bull Kelp Blade PON 1/23/2001 01A57 Bull Kelp Pneumatocyst PON 1/23/2001 o1A58 Giant Kelp Blade DCM 1/23/2001 01A59 Giant Kelp Pneumatocyst DCM 1/23/2001:

01A60 Bull Kelp Blade POS 1/23/2001, 01A61 Bull Kelp Pneumatocyst POS 1/23/2001 01A62 Bull Kelp Blade:, 7C2 1/23/2001 01A63 Bull Kelp Pneumatocyst 7C2 1/23/2001 01A64 Vegetative Greens (Snow Peas) 7C1 1/30/2001 01A71 Air Particulate, Iodine Cartridge MT1 1/31/2001 01A72 Air Particulate, Iodine Cartridge 5F1 1/31/2001 01A73 Air Particulate, Iodine Cartridge 7D 1 1/31/2001 01A74 Air Particulate, Iodine Cartridge 8S1 1/31/2001 01A75 Air Particulate, Iodine Cartridge 8S2 1/31/2001 01A76 Air Particulate, Iodine Cartridge 0S2 1/31/2001 01A77 Air Particulate, Iodine Cartridge 1S1 1/31/2001 01A80 Air Particulate, Iodine Cartridge MT1 2/7/2001 420DC-02_28.doc B-23

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01A81 Air Particulate, Iodine Cartridge 5F 1 2/7/2001 01A82 Air Particulate, Iodine Cartridge 7D1, 2/7/2001 01A83 Air Particulate, Iodine Cartridge 8S1 2/7/2001 01A84 Air Particulate, Iodine Cartridge 8S2 2/7/2001 01A85 Air Particulate, Iodine Cartridge 0S2 2/7/2001 01A86 Air Particulate, Iodine Cartridge is' 2/7/2001 01A88 Air Particulate, Iodine Cartridge MT1 2/14/2001 01A89 Air Particulate, Iodine Cartridge 5F1 2/14/2001 01A90 Air Particulate, Iodine Cartridge 7D1 2/14/2001 01A91 Air Particulate, Iodine Cartridge 8S1 2/14/2001 01A92 Air Particulate, Iodine Cartridge 8S2 2/14/2001 01A93 Air Particulate, Iodine Cartridge 0S2 2/14/2001 01A94 Air Particulate, Iodine Cartridge 1S1 2/14/2001 01A98 Surface Water (Outfall) OUT. 2/20/2001 01A99 Drinking Water 5S2 2/20/2001 01B00 Drinking Water DW1 2/20/2001 01BO1 Milk 5F2 2/20/2001 01B03 Air Particulate, Iodine Cartridge MT1 2/21/2001 01B04 Air Particulate, Iodine Cartridge 5F1 2/21/2001 01B05 Air Particulate, Iodine Cartridge 7D1 2/21/2001 01B06 Air Particulate, Iodine Cartridge 8SI 2/21/2001 01B07 Air Particulate, Iodine Cartridge 8S2 2/21/2001 01B08 Air Particulate, Iodine Cartridge 0S2 2/21/2001 01B09 Air Particulate, Iodine Cartridge 1Si 2/21/2001 01B13 Air Particulate, Iodine Cartridge MT1 2/28/2001 420DC-02_28.doc B-24

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01B14 Air Particulate, Iodine Cartridge 5F1 2/28/2001 01B15 Air Particulate, Iodine Cartridge 7D1 2/28/2001 01B16 Air Particulate, Iodine Cartridge 8S1 2/28/2001 01B17 Air Particulate, Iodine Cartridge 8S2 2/28/2001 01B18 Air Particulate, Iodine Cartridge 0S2 2/28/2001 01B19 Air Particulate, Iodine Cartridge IS1 2/28/2001 01B20 Surface Water (Seawater) DCM 3/2/2001 01B21 Surface Water (Seawater) 7C2 3/2/2001 01B25 Air Particulate, Iodine Cartridge MT1 3/7/2001 01B26 Air Particulate, Iodine Cartridge 5F1 3/7/2001 01B27 Air Particulate, Iodine Cartridge 7D1 3/7/2001 01B28 Air Particulate, Iodine Cartridge: 8S1 3/7/2001 01B29 Air Particulate, Iodine Cartridge 8S2 3/7/2001 01B30 Air Particulate, Iodine Cartridge' 0S2'-.' 3/7/2001 01B31 Air Particulate, Iodine Cartridge isi 3/7/2001 01B50 California Mussels POS 3/7/2001 01B51 Vegetative Greens (Broccoli) 5F2 3/13/2001 01B52 Vegetative Greens (Snow Peas) 7C1 3/13/2001 01B53 Air Particulate, Iodine Cartridge MT1 3/14/2001 01B54 Air Particulate, Iodine Cartridge 5F1 3/14/2001 01B55 Air Particulate, Iodine Cartridge 7D1 3/14/2001 01B56 Air Particulate, Iodine Cartridge 8S1 3/14/2001 01B57 Air Particulate, Iodine Cartridge 8S2 3/14/2001 01B58 Air Particulate, Iodine Cartridge 0S2 3/14/2001 01B59 Air Particulate, Iodine Cartridge iS1 3/14/2001 420DC-02_28.doc B-25

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01B60 Surface Water (Seawater) DCM 3/19/2001 01B61 Surface Water (Seawater). 7C2 3/19/2001 01B64 Vegetative Greens (Cabbage) 7G1 3/20/2001 01B65. Surface Water (Outfall). OUT 3/20/2001 01B66 Drinking Water 5S2 3/20/2001 01B67 Drinking Water DW1 3/20/2001 01B68 Milk 5F2 3/20/2001 01B79 Perch PON 3/22/2001 01B80 Rockfish PON 3/22/2001 01B81 Perch DCM 3/22/2001 01B82 Rockfish DCM 3/22/2001 01B83 Perch POS 3/22/2001 01B84 Rockfish POS 3/22/2001 01B85 "Perch 7C2 3/22/2001 01B86 Rockfish 7C2 3/22/2001 011B87 Air Particulate, Iodine Cartridge MT1 3/21/2001 01B88 Air Particulate, Iodine Cartridge 5F1 3/21/2001 01B89 Air Particulate, Iodine Cartridge 7D1 3/21/2001 01B90 Air Particulate, Iodine Cartridge 8S1 3/21/2001 01B91 Air Particulate, Iodine Cartridge 8S2 3/21/2001 01B92 Air Particulate, Iodine Cartridge 0S2 3/21/2001 01B93 Air Particulate, Iodine Cartridge 1S1 3/21/2001 01B96 Air Particulate, Iodine Cartridge MT1 3/28/2001 01B97 Air Particulate, Iodine Cartridge 5F1 3/28/2001 01B98 Air Particulate, Iodine Cartridge 7D1 3/28/2001 420DC-02_28.doc B-26

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01B99 Air Particulate, Iodine Cartridge 8S1 3/28/2001 01COO Air Particulate, Iodine Cartridge 8S2 3/28/2001 010C1 Air Particulate, Iodine Cartridge 0S2 3/28/2001 01C02 Air Particulate, Iodine Cartridge 1S1 3/28/2001 01 C03 Air Particulate, Iodine Cartridge MT1 4/4/2001 01C04 Air Particulate, Iodine Cartridge 5F 1 4/4/2001 01C05 Air Particulate, Iodine Cartridge 7D1 4/4/2001 01C06 Air Particulate, Iodine Cartridge 8S1 4/4/2001 01C07 Air Particulate, Iodine Cartridge 8S2 4/4/2001 01C08 Air Particulate, Iodine Cartridge 0S2 4/4/2001 01C09 Air Particulate, Iodine Cartridge 1S1 4/4/2001 01C11 Air Particulate, Iodine Cartridge MT1 4/11/2001 01C12 Air Particulate, Iodine Cartridge 5F1 4/11/2001 01C13 - Air Particulate, Iodine Cartridge 17D1 4/11/2001 01C14 Air Particulate, Iodine Cartridge 8si 4/11/2001 01C15 Air Particulate, Iodine Cartridge 8S2 4/11/2001 01C16 Air Particulate, Iodine Cartridge 0S2 4/11/2001 01C17 Air Particulate, Iodine Cartridge iSi 4/11/2001 01C24 Air Particulate, Iodine Cartridge MT1 4/18/2001 01C25 Air Particulate, Iodine Cartridge 5F 1 4/18/2001 01C26 Air Particulate, Iodine Cartridge 7D1 4/18/2001 01C27 Air Particulate, Iodine Cartridge 8S1 4/18/2001 01C28 Air Particulate, Iodine Cartridge 8S2 4/18/2001 01C29 Air Particulate, Iodine Cartridge 0S2 4/18/2001 01C30 Air Particulate, Iodine Cartridge 1S1 4/18/2001 420DC-02_28.doc B-27

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01C32 Vegetative Greens (Broccoli) 7G1 4/23/2001 01C33 Vegetative Greens (Peas) 7C1 4/23/2001 01C35 Surface-Water (Outfall) OUT 4/24/2001 01C36 Drinking Water 5S2 4/24/2001 01C37 Drinking Water DW1 4/24/2001 01C38 Milk 5F2 4/24/2001 01C39 Surface Water (Seawater) DCM 4/26/2001 01C40 Surface Water (Seawater) 7C2 4/26/2001 01C41 Air Particulate, Iodine Cartridge MT1 4/25/2001 01C42 Air Particulate, Iodine Cartridge 5F1 4/25/2001 01C43 Air Particulate, Iodine Cartridge 7D1 4/25/2001 01C44 Air Particulate, Iodine Cartridge 8S1 4/25/2001 01O45 Air Particulate, Iodine Cartridge 8S2 4/25/2001..

01C46 Air Particulate, Iodine Cartridge 0S2 4/25/2001 01C47. Air Particulate, Iodine Cartridge iS1 4/25/2001 01C60 Air Particulate, Iodine Cartridge MT1 5/2/2001 01C61 Air Particulate, Iodine Cartridge 5F1 5/2/2001 01C62 Air Particulate, Iodine Cartridge 7D1 5/2/2001 01C63 Air Particulate, Iodine Cartridge 8S1 5/2/2001 01C64 Air Particulate, Iodine Cartridge 8S2 5/2/2001 01C65 Air Particulate, Iodine Cartridge 0S2 5/2/2001 01C66 Air Particulate, Iodine Cartridge 1S1 5/2/2001 01C77 Vegetative Greens (Broccoli) 7G1 5/7/2001 01C78 Vegetative Greens (Peas) 7C1 5/7/2001 01C80 Air Particulate, Iodine Cartridge MT1 5/9/2001 420DC-02_28.doc B-28

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01C81 Air Particulate, Iodine Cartridge 5F1 5/9/2001 01C82 Air Particulate, Iodine Cartridge 7D1 *5/9/2001 01C83 Air Particulate, Iodine Cartridge 8S1 5/9/2001 01C84 Air Particulate, Iodine Cartridge 8S2 5/9/2001 01C85 Air Particulate, Iodine Cartridge 0S2 5/9/2001 01C86 Air Particulate, Iodine Cartridge iS1 5/9/2001 01C94 Air Particulate, Iodine Cartridge MT1 5/16/2001 01C95 Air Particulate, Iodine Cartridge 5F1 5/16/2001 01C96 Air Particulate, Iodine Cartridge 7D1 5/16/2001 01C97 Air Particulate, Iodine Cartridge 8S1 5/16/2001 01C98 Air Particulate, Iodine Cartridge 8S2 5/16/200.1 01C99 Air Particulate, Iodine Cartridge 0S2 5/16/2001 01DOO Air Particulate, Iodine Cartridge ISi "5/16/2001 OIDOI Surface Water (Outfall)ý. OUT 5/17/2001 01D02 Drinking Water .5S2 5/17/2001 01D03 Drinking Water DWI 5/17/2001 01D04 Milk 5F2 5/17/2001 01D09 Surface Water (Seawater) DCM 5/24/2001 O1D10 Surface Water (Seawater) 7C2 5/24/2001 O0Dll Air Particulate, Iodine Cartridge MT1 5/23/2001 01D12 Air Particulate, Iodine Cartridge 5F1 5/23/2001 0ID13 Air Particulate, Iodine Cartridge 7D1 5/23/2001 01D14 Air Particulate, Iodine Cartridge 8S1 5/23/2001 01D15 Air Particulate, Iodine Cartridge 8S2 5/23/2001 01D16 Air Particulate, Iodine Cartridge 0S2 5/23/2001 420DC-02_28.doc B-29

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01D17 Air Particulate, Iodine Cartridge iS1 5/23/2001 01 D21 Vegetative Greens (Radishes) 5F2 5/31/2001 01D22 Air Particulate, Iodine Cartridge MT1 5/30/2001 01D23 Air Particulate, Iodine Cartridge 5F11 5/30/2001 01D24 Air Particulate, Iodine Cartridge 7D1 5/30/2001 01D25 Air Particulate, Iodine Cartridge 8S1 5/30/2001 01D26 Air Particulate, Iodine Cartridge 8S2 5/30/2001 01D27 Air Particulate, Iodine Cartridge 0S2 5/30/2001 01D28 Air Particulate, Iodine Cartridge iS1 5/30/2001 01D48 Air Particulate, Iodine Cartridge MT1 6/6/2001 01 D49 Air Particulate, Iodine Cartridge 5F 1 6/6/2001 01D50 Air Particulate, Iodine Cartridge 7D1 6/6/2001 01D51 Air Particulate, Iodine Cartridge 8S1 6/6/2001 01D52 Air Particulate, Iodine Cartridge - 8S2 6/6/2001 01D53: Air Particulate, Iodine Cartridge 0S2 6/6/2001 01D54 Air Particulate, Iodine Cartridge iS1 6/6/2001 01D56 Vegetative Greens (Radishes) 5F2 6/12/2001 01D57 Iridaea DCM 6/7/2001 01D58 Iridaea 7C2 6/6/2001 01D59 Surface Water (Seawater) DCM 6/13/2001 01D60 Surface Water (Seawater) 7C2 6/13/2001 01D61 California Mussels DCM 6/7/2001 01D62 California Mussels POS 6/8/2001 01D63 California Mussels 7C2 6/6/2001 01D64 Market Fish - 7D3 6/5/2001 420DC-02_28.doc B-30

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected 'and Analyzed Sample No. Description Station No. Collection Date 01D66 Air Particulate, Iodine Cartridge MT1 6/13/2001 01D67 Air Particulate, Iodine Cartridge 5F1 6/13/2001 01D68 Air Particulate, Iodine Cartridge 7D1 6/13/2001 01D69 Air Particulate, Iodine Cartridge 8S1 6/13/2001 01D70 Air Particulate, Iodine Cartridge 8S2 6/13/2001 01D71 Air Particulate, Iodine Cartridge 0S2 6/13/2001 01D72 Air Particulate, Iodine Cartridge iSi 6/13/2001 01D80 Surface Water (Outfall) OUT 6/19/2001 01D81 Drinking Water 5S2 6/19/2001 01D82 Drinking Water DW1 6/19/2001 01D83 Milk 5F2 6/19/2001 01D84 Bull Kelp Blade PON, 6/13/2001 01D85 Bull Kelp Pneumatocyst PON 6/13/2001 01D86 Bull Kelp Blade POS 6/13/2001 01D87 Bull Kelp Pneumatocyst,: .POS 6/13/2001 01D88 Bull Kelp Blade 7C2 6/13/2001 01D89 Bull Kelp Pneumatocyst 7C2 6/13/2001 01D91 Perch PON 6/12/2001 01D92 Rockfish PON 6/11/2001 01D93 Perch DCM 6/8/2001 01D94 Rockfish DCM 6/8/2001 01D95 Perch POS 6/8/2001 01D96 Rockfish POS 6/8/2001 01D97 Perch 7C2 6/7/2001 01D98 Rockfish 7C2 6/7/2001 420DC-02_28.doc B-31

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01EOO Air Particulate, Iodine Cartridge MT1 6/20/2001 OlEOl Air Particulate, Iodine Cartridge 5F1 6/20/2001 01E02 Air Particulate, Iodine Cartridge 7D1 6/20/2001 01E03 Air Particulate, Iodine Cartridge 8S1 6/20/2001 01E04 Air Particulate, Iodine Cartridge 8S2 6/20/2001 01E05 Air Particulate, Iodine Cartridge 0S2 6/20/2001 01E06 Air Particulate, Iodine Cartridge isi 6/20/2001 01E13 Giant Kelp Blade DCM 6/13/2001 01El4 Vegetative Greens (Snow Peas) 7C1 6/26/2001 01El5 California Mussels PON 6/22/2001 01El6 Vegetative Greens (Mixed Greens) 6C1 6/26/2001 0IE17 Vegetative Greens (Cabbage) 7G1 6/27/2001 01E18 Giant Bull Kelp Pneumatocyst DCM 6/13/2001 01E19 Air Particulate, Iodine Cartridge MT1 6/27/2001 01E20 Air Particulate, Iodine Cartridge 5F1 6/27/2001 01E21 Air Particulate, Iodine Cartridge 7D1 6/27/2001 01E22 Air Particulate, Iodine Cartridge 8S1 6/27/2001 01E23 Air Particulate, Iodine Cartridge 8S2 6/27/2001 01E24 Air Particulate, Iodine Cartridge 0S2 6/27/2001 01E25 Air Particulate, Iodine Cartridge 1Si 6/27/2001 01E27 Air Particulate, Iodine Cartridge MT1 7/3/2001 01E28 Air Particulate, Iodine Cartridge 5F1 7/3/2001 01E29 Air Particulate, Iodine Cartridge 7D1 7/3/2001 01E30 Air Particulate, Iodine Cartridge 8S1 7/3/2001 01E31 Air Particulate, Iodine Cartridge 8S2 7/3/2001 420DC-02_28.doc B-32

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01E32 Air Particulate, Iodine Cartridge 0S2 7/3/2001 Air Particulate, Iodine Cartridge 1S1 7/3/2001 01E33 01E37 Air Particulate, Iodine Cartridge MT1 7/11/2001 01E38 Air Particulate, Iodine Cartridge 5F1 7/11/2001 01E39 Air Particulate, Iodine Cartridge 7D1 7/11/2001 01E40 Air Particulate, Iodine Cartridge 8S1 7/11/2001 01E41 Air Particulate, Iodine Cartridge 8S2 7/11/2001 01E42 Air Particulate, Iodine Cartridge 0S2 7/11/2001 Air Particulate, Iodine Cartridge 1S1 7/11/2001 01E43 01E46 Vegetative Greens (Cabbage) 7G1 7/18/2001 01E47 Vegetative Greens (Chard) 5F2 7/18/2001 01E48 Air Particulate, Iodine Cartridge MT1 7/18/2001 01E49 Air Particulate, Iodine Cartridge 5F1 7/18/2001.

01E50 Air Particulate, Iodine Carti.dge.. 7D1' 7/18/2001 01E51 Air Particulate, Iodine Cartridge 8S1 7/18/2001 01E52 Air Particulate, Iodine Cartridge 8S2 7/18/2001 01E53 Air Particulate, Iodine Cartridge 0S2 7/18/2001 01E54 Air Particulate, Iodine Cartridge iS1 7/18/2001 01E56 Milk 5F2 7/23/2001 01E57 California Mussels POS 7/20/2001 01E58 California Mussels 7C2 7/19/2001 01E59 Iridaea 7C2 7/19/2001 01E76 Surface Water (Outfall) OUT 7/25/2001 01E77 Drinking Water 5S2 7/25/2001 01E78 Drinking Water DW1 7/25/2001 420DC-02_28.doc B-33

Itl Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01E79 Surface Water (Seawater) DCM 7/25/2001 01E80 Surface Water (Seawater): 7C2 7/25/2001 01E81 California Mussels DCM 7/23/2001 01E82 Iridaea DCM 7/23/2001 01E83 California Mussels PON 7/24/2001 01E91 Air Particulate, Iodine Cartridge MT1 7/25/2001 01E92 Air Particulate, Iodine Cartridge 5F1 7/25/2001 01E93 Air Particulate, Iodine Cartridge 7D1 7/25/2001 01E94 Air Particulate, Iodine Cartridge 8S1 7/25/2001 01E95 Air Particulate, Iodine Cartridge 8S2 7/25/2001 01E96 Air Particulate, Iodine Cartridge 0S2 7/25/2001 01E97. Air Particulate, Iodine Cartridge iSi 7/25/2001 01 F01, Vegetative Greens (Snow Peas) 7C 1 7/31/2001 0IF14 Air Particulate, Iodine Cartridge MT1 8/1/2001 01F15 Air Particulate, Iodine Cartridge 5F1 8/1/2001 0IF16 Air Particulate, Iodine Cartridge 7D1 8/1/2001 01F17 Air Particulate, Iodine Cartridge 8S1 8/1/2001 01F18 Air Particulate, Iodine Cartridge 8S2 8/1/2001 01F19 Air Particulate, Iodine Cartridge 0S2 8/1/2001 01F20 Air Particulate, Iodine Cartridge iS1 8/1/2001 01F23 Vegetative Greens (Cabbage) 7G1 8/7/200 1 01F24 Vegetative Greens (Squash) 5F2 8/7/2001 01F27 Air Particulate, Iodine Cartridge MT1 8/8/2001 01F28 Air Particulate, Iodine Cartridge 5F1 8/8/2001 01F29 Air Particulate, Iodine Cartridge 7D1 8/8/2001 8/8/2001 420DC-02_28.doc B-34

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01F30 Air Particulate, Iodine Cartridge 8S1 8/8/2001 01F31 Air Particulate, Iodine Cartridge 8S2 8/8/2001 01F32 Air Particulate, Iodine Cartridge 0S2 8/8/2001 01F33 Air Particulate, Iodine Cartridge iSi 8/8/2001 01F36 Air Particulate, Iodine Cartridge MT1 8/15/2001 01F37 Air Particulate, Iodine Cartridge 5F1 8/15/2001 01F38 Air Particulate, Iodine Cartridge 7D1 8/15/2001 01F39 Air Particulate, Iodine Cartridge 8S1 8/15/2001 01F40 Air Particulate, Iodine Cartridge 8S2 8/15/2001 01F41 Air Particulate, Iodine Cartridge 0S2 8/15/2001 01F42 Air Particulate, Iodine Cartridge 1S1 8/15/2001 01F44 Drinking Water 5S2 8/21/2001 01F45 Drinking Water DWI 8/21/2001 01F46 Milk 5F2' "8/21/2001 01F47 Surface Water (Outfall) OUT 8/21/2001.

01F49 Surface Water (Seawater) DCM 8/23/2001 01F50 Surface Water (Seawater) 7C2 8/23/2001 0IF51 Air Particulate, Iodine Cartridge MT1 8/22/2001 01F52 Air Particulate, Iodine Cartridge 5F1 8/22/2001 01F53 Air Particulate, Iodine Cartridge 7D1 8/22/2001 01F54 Air Particulate, Iodine Cartridge 8S1 8/22/2001 01F55 Air Particulate, Iodine Cartridge 8S2 8/22/2001 01F56 Air Particulate, Iodine Cartridge 0S2 8/22/2001 01F57 Air Particulate, Iodine Cartridge 1S1 8/22/2001 01F60 Bull Kelp Blade PON 8/23/2001 420DC-02_28.doc B-35

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01 F61 Bull Kelp Pneumatocyst PON 8/23/2001 01F62 Giant Kelp Blade DCM 8/23/2001 01F63 Giant Kelp Pneumatocyst DCM 8/23/2001 01F64 Bull Kelp Blade POS 8/23/2001 01F65 Bull Kelp Pneumatocyst POS 8/23/2001 01F66 Bull Kelp Blade 7C2 8/23/2001 01F67 Bull Kelp Pneumatocyst 7C2 8/23/2001 01F68 Market Fish 7D3 8/28/2001 01F69 Vegetative Greens (Squash) 5F2 8/28/2001 01F70 Vegetative Greens (Lettuce) 7G1 8/28/2001 01F71 Perch PON 8/14/2001 01F72 Rockfish PON 8/14/2001 01F73 Perch DCM 8/9/2001 01F74 Rockfish DCM 8/9/2001 01F75 Perch POS 8/8/2001 01F76 Rockfish POS 8/8/2001 01F77 Perch 7C2 8/9/2001 01F78 Rockfish 7C2 8/9/2001 01F80 Air Particulate, Iodine Cartridge MT1 8/29/2001 01F81 Air Particulate, Iodine Cartridge 5F1 8/29/2001 01F82 Air Particulate, Iodine Cartridge 7D1 8/29/2001 01F83 Air Particulate, Iodine Cartridge 8S1 8/29/2001 01 F84 Air Particulate, Iodine Cartridge 8S2 8/29/2001 01F85 Air Particulate, Iodine Cartridge 0S2 8/29/2001 01F86 Air Particulate, Iodine Cartridge 1S1 8/29/2001 420DC-02_28.doc B-36

STable B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01F89 Air Particulate, Iodine Cartridge MT1 9/5/2001 01F90 Air Particulate, Iodine Cartridge 5F 1 9/5/2001 01F91 Air Particulate, Iodine Cartridge 7D1 9/5/2001 01 F92 Air Particulate, Iodine Cartridge 8S1 9/5/2001 01F93 Air Particulate, Iodine Cartridge 8S2 9/5/2001 01 F94 Air Particulate, Iodine Cartridge 0S2 9/5/2001 01 F95 Air Particulate, Iodine Cartridge 1S1 9/5/2001 01G00 Air Particulate, Iodine Cartridge MT1 9/12/2001 01G01 Air Particulate, Iodine Cartridge 5F1 9/12/2001 01G02 Air Particulate, Iodine Cartridge 7D1 9/12/2001 01G03 Air Particulate, Iodine Cartridge 8S1 9/12/2001 01G04 Air Particulate, Iodine Cartridge 8S2 9/12/2001 01G05 Air Particulate, Iodine Cartridge 0S2 9/12/2001' 01G06 Air Particulate, Iodine Cartridge IS1 9/12/200 1 01G08 Drinking Water 5$2 9/18/2001 01G09 Drinking Water DW1 9/18/2001 01G10 Milk 5F2 9/18/2001 OG11 Surface Water (Outfall) OUT 9/18/2001 01G 2 Vegetative Greens (Snow Peas) 7C 1 9/18/2001 01G14 Air Particulate, Iodine Cartridge MT1 9/19/2001 OIG15 Air Particulate, Iodine Cartridge 5F1 9/19/2001 01G16 Air Particulate, Iodine Cartridge 7D1 9/19/2001 01G17 Air Particulate, Iodine Cartridge 8S1 9/19/2001 01G18 Air Particulate, Iodine Cartridge 8S2 -9/19/2001 01G19 Air Particulate, Iodine Cartridge 0S2 9/19/2001 420DC-02_28.doc B-37

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01G20 Air Particulate, Iodine Cartridge 1S1 9/19/2001 01G23 Surface Water (Seawater) DCM 9/25/2001 01G24 Surface Water (Seawater) 7C2 9/25/2001 01G38 Air Particulate, Iodine Cartridge MT1. 9/26/2001 01G39 Air Particulate, Iodine Cartridge 5F1 9/26/2001 01G40 Air Particulate, Iodine Cartridge 7D 1 9/26/2001 01G41 Air Particulate, Iodine Cartridge 8S1 9/26/2001 01G42 Air Particulate, Iodine Cartridge 8S2 9/26/2001 01 G43 Air Particulate, Iodine Cartridge 0S2 9/26/2001 01 G44 Air Particulate, Iodine Cartridge iS1 9/26/2001 01G50 Air Particulate, Iodine Cartridge MT1 10/3/2001 01G51 Air Particulate, Iodine Cartridge 5F1 10/3/2001 01G52 Air Particulate, Iodine Cartridge .7D1) 10/3/2001 01G53 Air Particulate, Iodine Cartridge 8S1 10/3/2001, 01 G54 Air Particulate, Iodine Cartridge 8S2 10/3/2001 01G55 Air Particulate, Iodine Cartridge 0S2 10/3/2001 01G56 Air Particulate, Iodine Cartridge iS1 10/3/2001 01G60 Air Particulate, Iodine Cartridge MT1 10/10/2001 01G61 Air Particulate, Iodine Cartridge 5F1 10/10/2001 01G62 Air Particulate, Iodine Cartridge 7D1 10/10/2001 01 G63 Air Particulate, Iodine Cartridge 8S1 10/10/2001 01G64 Air Particulate, Iodine Cartridge 8S2 10/10/2001 01 G65 Air Particulate, Iodine Cartridge 0S2 10/10/2001 01G66 Air Particulate, Iodine Cartridge iS1 10/10/2001 01G71 Air Particulate, Iodine Cartridge MT1 10/17/2001 420DC-02_28.doc B-38

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01G72 Air Particulate, Iodine Cartridge 5F1 10/17/2001 01G73 Air Particulate, Iodine Cartridge 7D1 10/17/2001 01G74 Air Particulate, Iodine Cartridge 8S1 10/17/2001 01G75 Air Particulate, Iodine Cartridge 8S2 10/17/2001 01G76 Air Particulate, Iodine Cartridge 0S2 10/17/2001 01G77 Air Particulate, Iodine Cartridge iSi 10/17/2001 01G84 Drinking Water 5S2 10/22/2001 01G85 Drinking Water DW1 10/22/2001 01G86 Milk 5F2 10/22/2001 01G87 Surface Water (Ouffall) OUT 10/22/2001 01G88 Vegetative Greens (Tomato) 7C1 10/22/2001 01G89 Surface Water (Seawater) DCM 10/23/2001 01G90 Surface Water (Seawater) 7C2 10/23/2001 01G91 Vegetative Greens (Mixed Greens) 6C1::' . 10/19/2001 01G93 Air Particulate, Iodine Cartridge MT1 10/24/2001 01G94 Air Particulate, Iodine Cartridge 5F1 10/24/2001 01G95 Air Particulate, Iodine Cartridge 7D1 10/24/2001 01G96 Air Particulate, Iodine Cartridge 8S1 10/24/2001 01G97 Air Particulate, Iodine Cartridge 8S2 10/24/2001 01G98 Air Particulate, Iodine Cartridge 0S2 10/24/2001 01G99 Air Particulate, Iodine Cartridge 151 10/24/2001 011102 Vegetative Greens (Snow Peas) 7C1 10/30/2001 01H03 Bull Kelp Blade PON 10/23/2001 01H04 Bull Kelp Pneumatocyst PON 10/23/2001 01H05 Giant Kelp Blade DCM 10/23/2001 420DC-02_28.doc B-39

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 011106 Giant Kelp Pneumatocyst DCM 10/23/2001 01H07 Bull Kelp Blade POS 10/23/2001 011H08 Bull Kelp Pneumatocyst POS 10/23/2001 01H09 Bull Kelp Blade 7C2 10/23/2001 01H10 Bull Kelp Pneumatocyst 7C2 10/23/2001 01Hll Vegetative Greens (Bell Pepper) 7G1 10/31/2001 01H31 Air Particulate, Iodine Cartridge MT1 10/31/2001 01H32 Air Particulate, Iodine Cartridge 5F1 10/31/2001 01H33 Air Particulate, Iodine Cartridge 7D1 10/31/2001 01H34 Air Particulate, Iodine Cartridge 8S1 10/31/2001 011135 Air Particulate, Iodine Cartridge 8S2 10/31/2001 01H36 Air Particulate, Iodine Cartridge 0S2 10/31/2001 01H37. Air Particulate, Iodine Cartridge 1Si 10/31/2001 01H46 Air Particulate, Iodine Cartridge MT1 11/7/2001 01H47 Air Particulate, Iodine Cartridge 5F1 11/7/2001 01H48 Air Particulate, Iodine Cartridge 7D1 11/7/2001 01H49 Air Particulate, Iodine Cartridge 8S1 11/7/2001 01HI50 Air Particulate, Iodine Cartridge 8S2 11/7/2001 01H51 Air Particulate, Iodine Cartridge 0S2 11/7/2001 01H52 Air Particulate, Iodine Cartridge 1Si 11/7/2001 01H55 Air Particulate, Iodine Cartridge MT1 11/14/2001 01H56 Air Particulate, Iodine Cartridge 5F1 11/14/2001 01H57 Air Particulate, Iodine Cartridge 7D1 11/14/2001 01H58 Air Particulate, Iodine Cartridge 8S1 11/14/2001 01H59 Air Particulate, Iodine Cartridge 8S2 11/14/2001 420DC-02_28.doc B-40

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01H60 Air Particulate, Iodine Cartridge 0S2 11/14/2001 01H61 Air Particulate, Iodine Cartridge iSi 11/14/2001 01H62 Market Fish - Rock Cod 7D3 11/14/2001 01H63 Vegetative'Greens - Bell Peppers 7G1 11/14/2001 01H64 Vegetative Greens - Snow Peas 7C1 11/14/2001 01H71 Drinking Water 5S2 11/26/2001 01H72 Drinking Water DW1 11/26/2001 01H73 Milk 5F2 11/26/2001 01H74 Surface Water (Outfall) OUT 11/26/2001 01H75 Vegetative Greens (Tomato) 5F2 11/26/2001 011176 Air Particulate, Iodine Cartridge MT1 11/21/2001 01H77 Air Particulate, Iodine Cartridge 5F1 11/21/2001 01H78 Air Particulate, Iodine Cartridge 7D1 11/21/2001.

011179 Air Particulate; Iodine Cartri4ge. 8S1 11/21/2001 011H80 Air Particulate, Iodine Cartridge 8S2 11/21/2001 01H81 Air Particulate, Iodine Cartridge 0S2 11/21/2001 01H82 Air Particulate, Iodine Cartridge iSi 11/21/2001 011184 Surface Water (Seawater) DCM 11/28/2001 011185 Surface Water (Seawater) 7C2 11/28/2001 01H90 Air Particulate, Iodine Cartridge MT1 11/28/2001 011191 Air Particulate, Iodine Cartridge 5F1 11/28/2001 01H92 Air Particulate, Iodine Cartridge 7D1 11/28/2001 011193 Air Particulate, Iodine Cartridge 8S1 11/28/2001 011194 Air Particulate, Iodine Cartridge 8S2 11/28/2001 01H95 Air Particulate, Iodine Cartridge 0S2 11/28/2001 420DC-02_28.doc B-41

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01H96 Air Particulate, Iodine Cartridge iS1 11/28/2001 01H99 California Mussels DCM 11/28/2001 01100 Iridaea DCM 11/28/2001 01101 California Mussels POS 11/28/2001 01107 Air Particulate, Iodine Cartridge MT1 12/5/2001 01108 Air Particulate, Iodine Cartridge 5F1 12/5/2001 01109 Air Particulate, Iodine Cartridge 7D1 12/5/2001 01110 Air Particulate, Iodine Cartridge 8S1 12/5/2001 01111 Air Particulate, Iodine Cartridge 8S2 12/5/2001 01112 Air Particulate, Iodine Cartridge 0S2 12/5/2001 01113 Air Particulate, Iodine Cartridge iSi 12/5/2001 01115 Vegetative Greens (Peas) 7C1 12/10/2001 01116 Vegetative Greens (Lettuce Variety) 5F2 12/10/2001 01117 California Mussels.: 7C2 12/11/2001 01118 Intertidal Algae 7C2 12/11/2001 01119 Air Particulate, Iodine Cartridge MT1 12/12/2001 01120 Air Particulate, Iodine Cartridge 5F1 12/12/2001 01121 Air Particulate, Iodine Cartridge 7D1 12/12/2001 01122 Air Particulate, Iodine Cartridge 8S1 12/12/2001 01123 Air Particulate, Iodine Cartridge 8S2 12/12/2001 01124 Air Particulate, Iodine Cartridge 0S2 12/12/2001 01125 Air Particulate, Iodine Cartridge 1S1 12/12/2001 01154 Surface Water (Seawater) DCM 12/17/2001 01155 Surface Water (Seawater) 7C2 12/17/2001 01156 Drinking Water DW1 12/17/2001 420DC-02_28.doc B-42

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 01157 Milk 5F2 12/17/2001 01159 Vegetative Greens (Salad Greens) 6C1 12/19/2001 01I60 Drinking Water 5S2 12/17/2001 01161 Surface Water (Outfall) OUT 12/17/2001 01162 Air Particulate, Iodine Cartridge MT1 12/19/2001 01163 Air Particulate, Iodine Cartridge 5F1 12/19/2001 01I64 Air Particulate, Iodine Cartridge 7D1 12/19/2001 01165 Air Particulate, Iodine Cartridge 8S1 12/19/2001 01166 Air Particulate, Iodine Cartridge 8S2 12/19/2001 01167 Air Particulate, Iodine Cartridge 0S2 12/19/2001 01168 Air Particulate, Iodine Cartridge iSi 12/19/2001 01169 Air Particulate, Iodine Cartridge MT1 12/26/2001 01170 Air Particulate, Iodine Cartridge. 5F1 12/26/2001 01171 Air Particulate, Iodine Cartridge: - 7D1 - 12/26/2001 01172 Air Particulate, Iodine Cartridge 8S1 12/26/2001 01173 Air Particulate, Iodine Cartridge 8S2 12/26/2001 01174 Air Particulate, Iodine Cartridge 0S2 12/26/2001 01175 Air Particulate, Iodine Cartridge 1S1 12/26/2001 01182 Perch PON 10/7/2001 01183 Rockfish PON 10/7/2001 01184 Perch DCM 10/31/2001 01I85 Rockfish DCM 10/31/2001 01186 Perch POS 11/28/2001 01187 Rockfish POS 11/28/2001 01188 Perch 7C2 12/17/2001 420DC-02_28.doc B-43

Table B-7 (Continued)

Diablo Canyon Power Plant 2001 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No. Description Station No. Collection Date 011I89 Rockfish 7C2 12/17/2001 01190 Sediment DCM 10/31/2001 01I91 Sediment 7C2 12/17/2001 01192 Air Particulate, Iodine Cartridge MT1 1/2/2002 01193 Air Particulate, Iodine Cartridge 5F11 1/2/2002 01194 Air Particulate, Iodine Cartridge 7D 1 1/2/2002 01195 Air Particulate, Iodine Cartridge 8S1 1/2/2002 01196 Air Particulate, Iodine Cartridge 8S2 1/2/2002 01197 Air Particulate, Iodine Cartridge 0S2 1/2/2002 01 98 Air Particulate, Iodine Cartridge iS1 1/2/2002 420DC-02_28.doc B-44

DCL-02-051, 2001 Annual Radiological Environmental Operating Report

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DCL-02-051, 2001 Annual Radiological Environmental Operating Report

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Dear Commissioners and Staff:

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