DCL-06-059, Annual Radiological Environmental Operating Report

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Annual Radiological Environmental Operating Report
ML061240080
Person / Time
Site: Diablo Canyon  Pacific Gas & Electric icon.png
Issue date: 04/28/2006
From: Becker J
Pacific Gas & Electric Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
DCL-06-059 420DC-06.11
Download: ML061240080 (96)


Text

Pacific Gas and Electric Company James R. Becker Diablo Canyon Power Plant Vice President P 0. Box 56 Diablo Canyon Operations and Avila Beach, CA 93424 Station Director 805.545.3462 Fax: 805.545.4234 April 28, 2006 PG&E Letter DCL-06-059 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Docket No. 50-275, OL-DPR-80 Docket No. 50-323, OL-DPR-82 Diablo Canyon Units 1 and 2 2005 Annual Radiological Environmental Operating Report

Dear Commissioners and Staff:

Enclosed is the 2005 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 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.

ddm/4347/R0273567 Enclosure cc/enc:

Larry Allen Edgar D. Bailey, State of California, Department of Health Services Roger W. Briggs Terry W. Jackson, NRC Senior Resident Bruce S. Mallett, NRC Region IV Alan B. Wang, NRR Project Manager Diablo Distribution cc:

A member of the STARS (Strategic Teaming and Resource Sharing) Alliance Callaway

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2005 Annual Radiological Environmental Operating Report Diablo Canyon Power Plant April 2006 Prepared by Pacific Gas and Electric Company Technical and Ecological Services 3400 Crow Canyon Road San Ramon, CA 94583 Report Number 420DC-06.11 0 2006 by Pacific Gas and Electric Company All Rights Reserved TES ilEat

2005 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT Prepared by:

Reviewed by:

Approved by:

R.W. Lorenz 9?

X)

Supervisor, Ridiological Services. TES M.B. Wright R.EM? Engier, DCPP RE. Hite kin__________

Manager. Radiation Protection. DCPP

'I / il 076 APRIL 2006 REPORT NO.: 420DC-06.11 I. Ow242DC.06.11

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, 2005, through December 31, 2005. This program is conducted in accordance with DCPP Program Directive CY2, "Radiological Monitoring and Controls Program," and RPL.ID1 1, "Environmental Radiological Monitoring Procedure."

The results of the 2005 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. No plant related radionuclides were detected in surface water samples. The plant had no significant impact on surface water. Food crops sampled during their growing season and milk samples collected detected only naturally occurring radioactivity; and therefore, there was no impact from plant operation. Seven marine samples contained other than naturally occurring radionuclides. Cobalt-58 was detected in two algae samples collected from Diablo Cove. The cobalt-58 detected in these algae samples was slightly above detection levels. Low concentrations of various plant related radionuclides have been detected in algae collected from Diablo Cove several times in the operational period. However, the detected radionuclide concentrations have been random and near the lower limits of detection. Therefore, there is no increasing trend of plant related radionuclides in algae collected from Diablo Cove. In addition, Zinc-65 was detected in one kelp sample and a mussel sample collected from Diablo Cove. Zinc-65 had been previously identified in a mussel sample from Diablo Cove, but it is not unexpected since mussels are known to concentrate zinc and the plant has released more of this isotope since the introduction of stable zinc to the reactor coolant system as a corrosion inhibitor several years ago. One sample of fish obtained from a local fish market, one sample of fish from Station 7C2 (Rattlesnake Canyon), and one sample of fish from Diablo Cove each contained a small concentration of cesium-137. This isotope in a comparable concentration is routinely measured in fish collected worldwide due to fallout of this long lived isotope from past nuclear weapons tests in the atmosphere.

k 420 DC.06.11 i

CONTENTS Page 1

INTRODUCTION...................................................................

1-1 DCPP ENVIRONMENTAL MONITORING PROGRAM.................................

1-1 2

SAMPLING METHODS...................................................................

2-1 AIRBORNE RADIOACTIVITY..................

2-1 DIRECT RADIATION...................................................................

2-1 WATER SAMPLES...................................................................

2-2 MARINE BIOLOGICAL AND SEDIMENT SAMPLES........................................................

2-2 FOOD CROPS...................................................................

2-2 MILK.2-3 3

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

2-1 AIRBORNE RADIOACTIVITY..................................................................

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

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

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

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

3-3 MILK.3-3 4

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

4-1 5

LAND USE CENSUS.5-1 6

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

6-1 AIRBORNE RADIOACTIVITY..................................................................

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

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

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

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

6-8 MILK..................................................................

6-9 7

COMPARISON OF PREOPERATIONAL AND OPERATIONAL DATA.7-1 AIRBORNE RADIOACTIVITY.7-1 DIRECT RADIATION.7-2 3

442 0DC.06.11 ii

CONTENTS (Continued)

ALGAE SAMPLES..................................................................................................................

MUSSEL SAMPLE..................................................................................................................

MARKET FISH........................................................................................................................

8 PROGRAM VARIANCE........................................................................................................

AIRBORNE RADIOACTIVITY..............................................................................................

MARINE AND TERRESTRIAL SAMPLES...........................................................................

SUPPLEMENTAL SAMPLES.................................................................................................

9 REFERENCES........................................................................................................................

Appendix A:

ENVIRONMENTAL RADIATION MONITORING PROGRAM SUMMARIES Appendix B:

ANALYTICAL RESULTS pn42ODC.06.I1 iii Page 7-3 7-5 7-5 8-1 8-1 8-1 8-1 9-1

FIGURES Figure Page I

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

1-6 2a Units 1 and 2 Diablo Canyon on-site stations................................................................

1-7 2b Units 1 and 2 Diablo Canyon on-site stations................................................................

1-8 3

Units I and 2 Diablo Canyon Power Plant land use census.......................

5-4 4

Air particulates gross beta activities..........................

6-2 5

Environmental dosimeter comparisons..............................

6-7 6

Control chart for air particulate filters...............................................................................

7-2 7

Control chart for TLD data...............................................................

7-3 8

Control Chart for Co-58 Levels in Algae - Station DCM............................

7-4 9

Control Chart for Zn-65 Levels in Blades of Kelp - Station DCM..............

7-4 10 Control Chart for Zn-65 Levels in Mussels - Station DCM.......................

7-5 1 la Control Chart for Cs-137 Levels in Commercial Fish - Salmon.7-6 1 lb Control Chart for Cs-137 Levels in Surfperch (Embiotocidae) - Station 7C2.7-6 1 Ic Control Chart for Cs-137 Levels in Rockfish (Sebastes spp.) - Station DCM.7-7 TABLES Table Page I

Summary of the Radiological Environmental Monitoring Program.............

1-2 2

Distances and Directions to Environmental Monitoring Stations..............

1-4 3

Maximum Values for Lower Limits of Detection (LLD)...........................

3-2 4

Reporting Levels for Radioactivity Concentrations in Environmental Samples........

6-9 A-i Environmental Radiological Monitoring Program Summary - Airborne...........

A-i 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 Program...............................................................

A-11 442O DC.06.11 iv

TABLES (Continued)

Table B-1 B-2 B-3 B-4 B-5 B-6 B-7 State Cross-Check Results.................................................................................................

Marine and Terrestrial Sample Data -Detected Nuclides.................................................

Airborne Radioactivity......................................................................................................

Environm ental Dosim etry.................................................................................................

Land Use Census...............................................................................................................

Lower Limits of Detection (LLD) Exceeded..................................................................

List of Marine and Terrestrial Samples Collected and Analyzed......................................

Page B-1 B-4 B-5 B-19 B-20 B-21 B-22 R

420.DC.0611 V

Section 1 INTRODUCTION Diablo Canyon Power Plant (DCPP) consists of two Westinghouse pressurized water reactors. Unit I began commercial operation in 1985, and Unit 2 began commercial operation in 1986. This report contains results from the operational Radiological Environmental Monitoring Program (REMP) for DCPP compiled for the period January 1, 2005, through December 31, 2005. 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 RPl.ID1 1, "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 (page 1-2). 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 (page 1-4). The off-site and on-site stations are shown in Figures 1 and 2 (page 1-6), respectively.

N40C.06.11 1-l

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

Type of Analysis Frequency Direct radiation(s) 31 stations (MT1, WNI, OSI, SS1, Gamma exposure Quarterly 6S1, 8S1, 8S2, 5S3, 2D1, 4D1, SF1, IAI, 7D2,7G2,7C1, 7F1, OBI, 7D1, 4C1, OS2, 1S1, 2S1, 3S1, 4S1, 7S1, 9S1, ICI, SC, 3D1, 6D1, 5F3)

Particulate filters 7 stations (MT 1, OS2, IS I, 5F1, Gross beta, Weekly(c) 7D1, 8S1, 8S2) gamma isotopic Quarterly composite Iodine cartridges 7 stations (MT1, OS2, 151, 5F1, Gamma for I-131 Weekly 7D1, 8S1, 8S2)

Surface water 3 stations (DCM, 7C2, OUIT)

Gamma isotopic, Monthly Tritium Drinking water 2 stations (DWI, 5S2)

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

Gamma isotopic Annually Rattlesnake Canyon (7C2)

Intertidal algae(d)

Diablo Cove (DCM)

Gamma isotopic Quarterly if Rattlesnake Canyon (7C2)

Available Kelp(d)

Diablo Cove (DCM)

Gamma isotopic Quarterly if Pacific Ocean North (PON)

Available Pacific Ocean South (POS)

Rattlesnake Canyon (7C2)

Milk(d) 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 <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after filter change.

(d) Supplemental sample.

NX-4 DCi6.11 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 (7D3)(d)

Gamma isotopic Quarterly if (species unspecified)

Morro Bay Market (2F1)(d)

Available Mussels Diablo Cove (DCM)

Gamma isotopic Quarterly if (Mytilus californianus)

Pacific Ocean North (PON)(d)

Available Pacific Ocean South (POS)(d)

Rattlesnake Canyon (7C2)

Red abalone(d)

Diablo Cove (DCM)

Gamma isotopic Semiannually if (Haliotis refescens)

Rattlesnake Canyon (7C2)

Available Food crops(d) 4 stations (5F2, 7G1, 7C1, 6C1)

Gamma isotopic Monthly if available (6C1 is sampled uarterl 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 <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after filter change.

(d) Supplemental sample.

140 U 4

.6.11 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) 0SI Exclusion Fence-Northwest Corner 320 0.2 (0.1) 0S2 North Gate 320 0.8 (0.5)

IS1 Wastewater Pond 330 0.6 (0.4) 2SI Back Road-300 m North of Plant 0

0.3 (0.2) 3SI Road NW of 230 kV Switchyard 23 0.6 (0.4) 4SI Back Road between Switchyard 43 0.8 (0.5) 5SI 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) 9SI South Cove 167 0.6 (0.4)

MTI Meteorological Tower 185 0.3 (0.2)

DCM Diablo Cove 270 0.3 (0.2)

WN1 Northwest Guard Shack 290 0.3 (0.2) lAl Crowbar Canyon 327 2.6 (1.6) 0B1 Point Buchon 325 5.8 (3.6) iCi Montana de Oro Campground 336 7.5 (4.7) 4C1 Clark Valley Gravel Pit 45 9.3 (5.8)

SC1 Junction Prefumo/See Canyon roads 64 7.5 (4.7) 6C1 Household garden (nearest site boundary) 97.5 7.2 (4.6) 7C1 Pecho Creek Ruins (Mello Farm) 120 6.6 (4.1) 7C2 Rattlesnake Canyon 124 7.5 (4.7) 2D1 Sunnyside School 10 11.0 (6.9) 3D1 Clark Valley 24 9.9 (6.2) 4D1 Los Osos School 36 12.2 (7.6) 6DI 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) 2FI Morro Bay (Commercial Landing) 0 17.4 (10.9)

SF1 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 Outfall 270 0.3 (0.2)

DW1 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 I containment.

422DC.06. 11 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 1 - North-northwest 2 - North 3 - North-northeast 4 - Northeast 5 - East-northeast 6 - East 7 - East-southeast 8 - Southeast 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 represents the station number within the zone.

Station Code (DCM. MTI. WNI. PON. POS. OUT. DW1D:

The following stations do not follow the coding system: Diablo Cove Marine (DCM), Meteorological Tower (MT1), Northwest guard shack (WN1), Pacific Ocean North (PON), Pacific Ocean South (POS), Plant Outfall (OUT), and Drinking Water (DW1).

!W42 4DC.06.11 1-5

Pactfic Ocean 5 Mile Radius SE N

0 5 miles I

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

l420DC.06.

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  • Biological Station Breakwater Figure 2a. Units I and 2 Diablo Canyon on-site locations.

W3420DC.06.11 1-7

Diablo Canyon Stations Dosimtry Sectors DOsemtry &Air Protected Area Ekhgtcal Site Boundary C)

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

M 0J420DC.06.11 1-8

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: MTI, 0S2, ISI, 7D1, 8S1 and 8S2, and at one control station SF1.

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

The sample volumes were determined by F&J Corporation model DF-1 flowmeters (corrected to standard temperature and pressure, STP) which are installed downstream of the sample head.

For the sampling period starting August 3, the particulate filter type used in the air sampling train was changed to F&J Model 521120 and the iodine cartridge type was changed to the F&J TE2B model. The HV H-70 particulate filters previously used were no longer available, prompting the switch to the F&J type filter for environmental sampling. The switch to F&J charcoal cartridges was made because F&J provides additional benefits for handling and efficiency determination. Prior to the switchover, TES determined background activity on the new particulate filters and charcoal cartridges. The potassium-40 content of the F&J particulate filters is higher than that of the HV H-70 particulate filters which translates to a higher gross beta background count. Given that net values are reported, there is no impact on reported activity.

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.

!44DC.06.11 2-1

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 (station OUT). Drinking water samples were collected from Diablo Creek Weir (station 5S2) located on-site and from the drinking water system at DCPP (station DWI). 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.

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 7GI), Mello Farm (station 7C1) along 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.

Ua 42ODC.06.11 2-2

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.

442ODC.06.11 2-3

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 (page 3-2), 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 (page 1-2) for the summary of the type of analyses that were performed on the different sample media.

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

Gamma isotopic analyses were also performed on the TEDA 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 (UDS 14) TLD badges were used to measure the ambient radiation level. The TLD badges were annealed and packaged to be sent out in the field by plant dosimetry personnel. After field exposure, the TLD badges were processed on-site. The badges were calibrated using a NIST-traceable cesium-137 source.

H i UODC.06. 11 3-1

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

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

(pCi/M3 )

(pCfkt, wet)

(pCi/L)

(pCilkg, wet)

(pCi/kg, dry)

Gross beta 4

lxIO-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 (b) 7x10-2 1

60 Cs-134 15 5xIO-2 130 15 60 150 Cs-137 18 6xlO-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 greal" signal.

For a particular measurement system (which may include radiochemical separation):

LLD =4.66 Sb E x V x 2.22 x Y x exp (-Xt) 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.

242ODC.06.11 3-2

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

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

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

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

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

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

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

pan 442 0DC.06. 11 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, RPLIDI 1, 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 through 2005, 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
  • gamma emitters in soil
  • gamma emitters in vegetation
  • gamma emitters on particulate filter Except for Co-58 in each of one sample of water and soil, all of the TES results of these blind samples were acceptable using the NRC criteria for determining agreement of confirmatory radiochemical measurements (See Table A-10). The June, 2005 Gamma Emitters in Water (E4576-35) and Gamma Emitters in Soil (E4575-35) contained Co-58 at a level below the calculated MDA for the analytical lab and was therefore not recognized using routine counting protocol. The TES counting protocol is sufficient to detect Co-58 at the required LLD.

42O DC.06.11 4-1

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

showed that there were no discrepancies between the results obtained by the state of California Sanitation and Radiation Laboratory (SRL) and TES. The table of TES results for the 2005 cross-check program can be found in Appendix B, Table B-1. The California Department of Health Services (CDHS) has yet to issue a report for 1999 through 2004. Since TES has been informed that these reports have a low priority with CDHS, 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 2004 (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 CDHS resumes producing a cross-check report.

6 V42ODC.06.11 4-2

Section 5 LAND USE CENSUS Diablo Canyon Power Plant (DCPP) radiation protection personnel conducted a Land Use Census in the vicinity of DCPP for 2005. The land use census is based on Nuclear Regulatory Commission (NRC)

Regulatory Guide 4.8, "Environmental Technical Specifications for Nuclear Power Plants" and 10 CFR 50 Appendix I section IV. B. 3.

DCPP Program Directive CY2, "Radiological Monitoring and Controls Program" requires performance of a land use census.

DCPP IDAP RPL.IDl 1, "Environmental Radiological Monitoring Procedure", requires identification of the nearest milk animal, nearest residence, and the nearest 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. The land use census is conducted at least once per year during the growing season (between Feb 15 and Dec 1) for the Diablo Canyon environs.

The 2005 Land Use Census was conducted using phone interviews. Nine individual landowners or tenants were contacted on November 28, 2005.

No milk animals were identified within the first 8 kilometers (5 miles) of any sector.

The nearest residence, relative to all sectors, is a small trailer located in the NW sector about 1.93 kilometers (1.2 miles) from the plant. Ranch workers occupy this BLANCHARD residence approximately 1 month per year during cattle round-ups.

The nearest residence in each sector is summarized in Table B-5.

The land use census identified two household gardens greater than 50 square meters (500 square feet) that produce broadleaf vegetation. The READ garden is approximately l/4 acre and located in the NNE sector at 7.08 kilometers (4.41 miles). The KOONZE garden is approximately 500 square feet and located in the E sector at 7.24 kilometers (4.5 miles).

MELLO manages a farm on the coastal plateau, along the site access road, in the ESE sector. The farm starts at approximately 4.8 km and extends to 7.2 km (3 to 4.5 miles) from the plant. This commercial farm produces no broadleaf vegetation. The farm 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 consist of about 25%

4 0DC.0.11 5-1

legumes (sugar peas) and 75% cereal grass (oat hay). Less than 10 farm workers periodically occupy this area during the growing season.

Much of the area outside the plant site-boundary is used for rotational cattle grazing by five separate cattle operations. For purposes of this census, the five cattle ranches are called BLANCHARD, SINSHEIMER, READ, ANDRE, and MELLO.

BLANCHARD has about 120 cattle outside the plant site-boundary and utilizes the NW, NNW, N, and NNE sectors. About 80 yearling cattle were sold to mass market in 2005. BLANCHARD slaughtered two cattle in 2005 for personal consumption.

Additionally, BLANCHARD managed about 250 goats that were used for weed abatement in all landward sectors within the plant site-boundary. During 2005, approximately 200 baby goats were born and then taken to Santa Margarita California where they are grass fed for 1 year. After one year, the 200 yearling goats are then to be sold to mass-market auction. BLANCHARD did not slaughter any goats in 2005 for personal consumption.

BLANCHARD also managed about 60 sheep outside the plant site-boundary in the NW and NNW sectors. These sheep were sold to mass market. BLANCHARD did not slaughter any sheep in 2005 for personal consumption.

SINSHEIMER has about 100 cattle outside the plant site-boundary in the NNE sector. These cattle were allowed to breed and about 90 calves were sold to mass market in 2005. SINSHEIMER did not slaughter any cattle for personal consumption in 2005.

READ has about 150 cattle outside the plant site-boundary in the NNE sector.

ANDRE has about 80 cattle outside the plant site-boundary in the ENE sector. About 80 calves were sold to mass market in 2005. ANDRE did not slaughter any cattle in 2005 for personal consumption.

MELLO manages about 1000 cattle outside the plant site-boundary in the E, ESE, and SE sectors. Harris Ranch Beef Corporation owned these cattle and sold all of them to mass market in 2005. MELLO did not slaughter any cattle in 2005 for personal consumption.

Two landowners (JOHE and ANDRE) take wild game for personal consumption outside the plant site-boundary in the NNE, NE, and ENE sectors. This wild game consists of approximately 2 deer and 4 wild pigs per landowner.

I442O DC.06.11 5-2

There is a California State Park Ranger Office in the NNW sector at 7.483 kilometers (4.65 miles) from the plant. Approximately 3 people occupy this office from 1000 to 1500 each day per week.

There is a public campground located in the NNW sector at Montana de Oro State Park at 7.387 kilometers (4.59 miles). This campground is near Spooneres Cove.

A total of 14 residences were identified within the 8-kilometer (5-mile) radius of the plant, which were confirmed or appear to be occupied during 2005. Two abandoned structures are located in each of the NNW and NNE sectors.

Table B-5 summarizes the nearest residences in each meteorological sector. Figure 3 (page 5-4) shows the locations of the residences and gardens in the vicinity of DCPP.

242O DC.06.11 5-3

NW

\\

SSAN LUIS OBISPO Paafic ILAI L

BEACH Ga en orL BEACHF 5 Mile Radius Pi\\

GROVERBEEACH\\-

UNITS I AND 2l DIABLO CANYON SITE Garden or Farmn A

Residence Locations 0

1 2

3 4

5 SCALE IN MILES Figure 3. Units 1 and 2 Diablo Canyon Power Plant 2005 Land Use Census r

42ODC.06.11 54

Section 6 RESULTS AND DISCUSSION The results for the DCPP REMP are listed in Appendices A and B. The +/- terms listed in the tables in the appendices are the uncertainties within the 95 percent confidence level. The tables in Appendix A present summaries of the results, formatted in accordance with current NRC guidelines (NRC Branch Technical Position, Revision 1, November 1979). Appendix A also includes the results of the performance evaluation studies. The tables in Appendix B contain analytical results of the individual samples which were supplied to the state laboratory. The LLD for the nuclides of interest listed in Table 3 (page 3-2) were met for all analyses. 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 6-9).

AIRBORNE RADIOACTIVITY Air particulates and radioiodine samples were collected weekly from six indicator stations (MT 1, 0S2, iSI, 7D1, 8S1, and 8S2) in the DCPP environs and one control station (SF1). A total of 363 air particulate filters and 363 iodine cartridges were collected and analyzed. The data collected for the air-sampling program is summarized in Appendix A, Table A-i.

Air Particulates Gross beta activity was detected in all weekly air particulate samples collected from all control stations and in all but one indicator station. The range for the indicator stations was <0.001 - 0.045 pCi/m3 with a mean of 0.012 pCi/m3. The range for the control station was 0.003 - 0.046 pCi/m3 with a mean of 0.013 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.

p 42 4DC.06.11 6-1

Station MT1 Air Particulate Gross Beta Activity (2005)

I Ift

.04 -

.03-E C-,

.02-

.01 -

II I IIIiiliii~ I I1i111.iiiiiilll I II n.0 _

a a

a CC Station 5F1 Air Particulate Gross Beta Activity (2005)

.05-

.04i

.03-

.02-

.01 III I E

cL C.,

a.ci V

CYe, a

'2 co, Figure 4. Air particulate gross beta activities.

99030810O5-MTand 5F1 1,VX420DC.06.11 6-2

Station 7D1 Air Particulate Gross Beta Activity (2005)

,% g mv E

C-,

E 0L

.04-

.03-

.02-

.01

.00IIIIIII

'a c2 g

g a

C Station 8SI Air Particulate Gross Beta Activity (2005)

.05-

.04-

.03-

.02-

.001 Ii a

o-8 C

g

'2 mt Figure 4. continued.

990308=547D1 and BS1

'W420DD.06.11 6-3

Station 8S2 Air Particulate Gross Beta Activity (2005)

.05

.04-

.03-E C.02 a.0

.02-0

'2 Station OS2 Air Particulate Gross Beta Activity (2005)

.05

.04-

.03 E

.02-

.01

.00 C

Figure 4. continued.

9g030w5.S2 and 0S2 4242 DC.06.1 1 6-4

Station ISI Air Particulate Gross Beta Activity (2005)

,\\r

_Un -

.04 -

cV)

E C.,

.03-

.02 -

.01 -

nn II I II II

.V_

1.1111 Ii

__________l.iillil liiiI..I.I aI I-N a

CO hi-Figure 4. continued.

990308105-ISI pan 42DD.06.11I 6-5

Radioiodine A total of 363 iodine cartridges were analyzed for iodine-131. No Iodine-131 was detected in any of the iodine cartridges.

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 ILD badges at each location) and processed. The quarterly average exposure level from all indicator stations ranged from 9.1 - 23.2 mR/qtr with a mean of 16.2 mRlqtr. The exposure level at the control station SFI ranged from 16.3 - 18.8 mRlqtr with a mean of 17.6 mR/qtr. The exposure levels for 2005 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. Figure 5 shows the long term comparisons of direct radiation exposure rates for the Inner Ring, Outer Ring, Special Interest, and Control Stations.

WATER SAMPLES A total of 61 water samples (24 drinking water samples, 37 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. No plant related gamma emitters were detected in any surface water sample or drinking water sample. Iodine-131 analysis by ion exchange was also performed on all 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 significant impact on water in the plant environs.

MARINE BIOLOGICAL AND SEDIMENT SAMPLES A total of 92 marine biological and sediment samples were collected from the indicator, control and supplemental stations. They included 37 fish samples, 13 mussel samples, 40 algae samples, and 2 ocean bottom sediment samples. Table B-7 lists the marine samples collected for 2005. The results obtained a

QDC.06.11 6-6

30.0 25.0 20.0 -

L.

15.0-

'Ix E

10.0 5.0 -

0.0 -

1980

-IInner Ring Stations

-Outer Ring Stations Special Interest Stations Control Stations l Inner Ring Stations -OS1, WN1, OS2, 1S1, 2S1, 3S1, 4S1, 5S1, 5S3,6S1, 7S1, 8S1, BS2, 9S1, and MT1 Outer Ring Stations - lA, OB1, 1C1, 2D1, 3D1, 4C1, 5C1, 601, and 7C1 Special Interest Stations - 7F1, 7D1, 7D2, 7G2, and 5F3 Control Stations - 4D1 and 5F1 1985 1990 1995 2000 Year Figure 5. Environmental Dosimeter Comparisons 2005 20DC.DC.06. 11 6-7

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.

Abalone Red abalone were not collected in 2005. It is unlikely that abalone will be collected at DCPP in the future as the California Marine, Sport Fishing Regulations were amended on December 8, 2000 to state that no abalone can be taken south of San Francisco Bay.

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

Zinc-65 was detected in this sample at a level just above detection level.

Fish A total of 37 fish samples from stations DCM, 7C2, PON, POS, 2F1 and 7D3 were analyzed. One sample of market purchased fish obtained at 2F1, one sample of Perch from 7C2, and one sample of Rockfish from DCM contained measurable Cs-137 attributable to environmental contamination from past atmospheric nuclear weapons testing. All other samples contained only naturally occurring radioactivity.

The operation of DCPP had no detectable impact on fish in the plant environs.

Algae A total of 40 algae samples were collected from stations DCM, 7C2, PON, and POS. These samples are supplemental to the REMP. Two samples collected from DCM contained a small, but detectable level of cobalt-58. One other kelp sample collected from DCM contained measurable Zn-65. All other samples contained only naturally occurring radioactivity. The operation of DCPP had no significant impact in algae in the plant environs.

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 40 vegetative samples were collected from four supplemental stations: Cal Poly Farm (station SF2), Kawaoka Farm (station 7G1), Mello Farm (station 7C1), and a household garden 0442ODC.06.1 1 6-8

(station 6C1). 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.

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

(pCi/m3)

(pCi/kg, wet)

(pCi/L)

(pCift, 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 I-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.

P M420DC.06.11 6-9

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 overall mean radioactivity level for the station from the current observation and then dividing by the overall standard deviation for that station. The control charts are used to test whether fluctuations in the standardized data are random or from a change in the concentration of a particular parameter. For air particulate gross beta activity and TLD measurements, the standardized difference between the indicator and control stations is trended on these charts.

Plant related radioactivity was detected in four sample media during 2005. Co-58 was measured in two intertidal algae samples collected from DCM. Zn-65 was measured in one kelp and one mussel sample collected from DCM. Cs-137 was measured in three samples of fish. The Shewart-CUSUM control charts for the detected radionuclide-media combinations as well as 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 6) showed that there is no increasing trend during the operational years (1985-2005), 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.

X 442O DC.06.11 7-1

4 2

-2

-4 StanchndedVd sAN80 JANJAN JAN88 JAN92 JAN96 JAN0 JAN04 JAN06 DATE Figure 6. Control Chart for Air Particulate Filters - Difference Between Indicator and Control Station Annual Means In 2005, 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 in prevailing downwind sectors on-site compared to stations on-site which are in least prevalent wind direction (see Figure 7) shows that there has been no increasing trend during the operational years. The mean exposure rate measured at the stations in the prevalent wind directions has consistently been lower than the mean exposure rate measured from those stations in the least prevalent wind directions. This difference has remained essentially constant during both the preoperational and operational periods. The only period which shows significant differences in this long term trend was during the period between 1987 and 1990. This period was a time of high sunspot activity and rapid variations in the cosmic radiation portion of the background radiation, and also during this period the dosimeter used to measure the exposure rates in the environment was changed from Victoreen bulbs and the Panasonic badge type dosimeters. One or both 342042D.06.11 7-2

De

° 8 -

-8 A,.

JAN JAN84 JAN88 JAN92 JAN98 JANO0 JAN04 JAN08 DATE Figure 7. Control Chart for TLD Data - Difference between Downwind and Upwind Station Quarterly Means of these events were the likely cause of the short term differences in the compared exposure rates.

ALGAE SAMPLES Algae sampling is not a REMP requirement and is therefore considered a supplemental sample. There is no reporting requirement for radioactivity levels in algae. Two species of algae are normally collected from DCM quarterly when available. Several times during the operational period small concentrations of various plant related radioactivity have been detected in the algae. These radioactivity concentrations detected have been random in the past so one can conclude that there is no increasing trend in radioactivity concentrations in algae from Diablo Cove. Co-58 was measured in two Iridaea samples from DCM during 2005. The control chart for Co-58 in algae (Iridaea) is shown as Figure 8.

In one sample of kelp another algae supplemental sample collected from DCK, Zn-65 was also measured.

Stable zinc has been added to the reactor coolant at DCPP as a corrosion inhibitor for the last several years, and Zn-65 is a part of the normal plant effluent. The control chart for Zn-65 in algae (blades of kelp) is shown as Figure 9.

F D420DC.06.11 7-3

r8 4-2 ' cosu Lm 0

-2

.4-r °CUSUM Value e

Standardzed X JAN80 JAN84 JAN88 JAN92 JAN JA JAN02 DATE Figure 8. Control Chart for Co-58 Levels In Algae - Station DCM JAN04 JAN06 4

2 0

-2

-4

.6 I'

C-UOu Ulm AM- -W Wn--Mn-rnM-in MM ~MCU-aM u

-n--~-a uo

-w.. Lb-L

  • 3- -

Std.darlzed X I

-8 N.

AN8 JAN92..AN9

.AN00, JANSO 1ANS4 JAN88 JAN92 JAN95 JAN00 JA 0 1N

-JAN.

JAN02 JAND4 JANOS DATE Figure 9. Control Chart for Zn-65 Levels In Blades of Kelp - Station DCM 1!8W420DC.06.11 7-4

MUSSEL SAMPLE Zn-65 was also detected in one mussel sample collected in 2005. The mussel sample was collected from DCM. The control chart for Zn-65 in mussels is shown as Figure 10.

S rd 8 -

48 JAN8M I.. i, 11.1.......

i1 11 -

II 11 1 1 1,

I11 1.

1 1.

1 1

JAN84 JAN88 JAN9M J

ANOO JAN02 JAN04 DATE JAN06

,5=Cts Figure 10.

Control Chart for Zn-65 Levels in Mussels - Station DCM FISH Cs-137 was measured in three samples of fish (one that was purchased at a local fish market). Cs-137 has been routinely measured in fish. This Cs-137 is most likely due to the fallout from past atmospheric nuclear test rather than being related to discharges from the plant. The control charts for Cs-137 in fish are shown as Figure I la, lIb, and I Ic.

IN 90 D.06.11 7-5

Detvua emn 8-8 -

4 -

2 -

CUIWM LkA cwu O

s "

O.

oo o

ooo o/

o' y

-2

-4 4

.8

° CUSUM Vd I

JAN8O 8...

N, JAN84 JANSS JANs2 JAN9S DATE JAN00 JAN02 JAN04 JANOS 1

5.U EFigure 11a.

8tandar Control Chart for Cs-137 Levels in Commercial Fish - Salmon 4

1 2 2 cuswas u

1 ve.4Me-M Lk*

0 0*00 - 0 1

==1- -

d

.4.

.8 -

I ° ° F

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9 9 C StandrdizodX I

41,....................

.1.... 1-111...

ijl.i JAN80 JANe4 JANea JAN92 JAN96 JAN00 JAN02 JAN04 JANOS DATE Figure 11b. Control Chart for Cs-137 Levels In Surfperch (Embiotocidae) - Station 7C2

> 4202D.06.11 7-6

JAN80 JAN84 JAN88 JAN92 JAN98 JANOO JAN02 JAN04 JAN08 DATE Figure 11c. Control Chart for Cs-137 Levels In Rockfish (Sebastes spp.) - Station DCM X420O.D6..11 7-7

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

AIRBORNE RADIOACTIVITY The mean percent availability for all on-site and off-site samplers was 99.4 percent. That is, on average, all samplers were up and running 99.4 percent of the time. Some sampling time was lost for the following events: at station 7D1, approximately 40 hours4.62963e-4 days <br />0.0111 hours <br />6.613757e-5 weeks <br />1.522e-5 months <br /> of sampling time was lost due to a blown electrical fuse during the week of 4/20 - 4/27; at station MT1, approximately 168 hours0.00194 days <br />0.0467 hours <br />2.777778e-4 weeks <br />6.3924e-5 months <br /> of sampling was lost during the week of 514 - 5/11 due to a blown fuse; stations 0S2, ISi, 8S1 and 8S2 lost approximately 17 - 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> each due to a site power outage during the sampling week 8/17 - 8/24.

MARINE AND TERRESTRIAL SAMPLES All marine samples were collected as scheduled (including allowable variation) except for the following:

mussel samples from Station PON were not collected during the second, third, and fourth quarters due to small size and small numbers of mussels available during these sampling periods. All terrestrial samples were collected as scheduled (including allowable variation).

As mentioned earlier, the California Department of Fish and Game has issued regulations prohibiting the collection of abalone along the central and southern coast of California. PG&E considers it unlikely that collection of abalone will be allowed in the DCPP environs in the near future. Note that the sampling of abalone is supplemental to the REMP.

SUPPLEMENTAL SAMPLES As a supplement to the routine sampling program, a replicate fish sample was collected from Station PON during the second quarter. An additional surface water sample was collected from Station DCM in the first quarter. Also as a supplement to the routine sampling program, sand samples were collected in fourth quarter from several beaches in San Luis Obispo County. These sand samples were analyzed using gamma spectrum analysis. A replicate sample of sand was collected at one of the beaches.

Sand was collected from beaches in the following areas: Cambria Beach, Pismo Beach, Avila Beach (replicate sample), Montana de Oro Beach, and Cayucos Beach. Cesium-137 was detected in two of the samples near the detection level for the gamma analysis technique used. The results were similar to past samples of this type and represent the ambient level of Cs-137 in the environment as the result of 0

420DC.06.11 8-1

atmospheric nuclear testing conducted in the 1950's and 1960's. The results of the analyses of the replicate samples were within expected correlation.

One sample of supplemental ground water was collected from a well (Water Well 02) on site and analyzed for tritium. No tritium was detected in this well water.

A sample of beef was collected from Blanchard Ranch as a supplemental sample. Only naturally occurring isotopes were detected in this sample.

> 42 2DC.06.11 8-2

Section 9 REFERENCES

1. DCPP Interdepartnental Administrative Procedure (IDAP), RPI.D1)11, "Environmental Radiological Monitoring Procedure."
2. NRC Branch Technical Position, Revision 1, November 1979.
3. DCPP Program Directive, CY2, "Radiological Monitoring and Controls Program."

4442ODC.06.11 9-1

Appendix A ENVIRONMENTAL RADIATION MONITORING PROGRAM SUMMARIES W442ODC.06.11

Table A-1 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California Docket No.

50-275 and 50-323 Report Period 1/1/05 - 12/31/05 (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(h)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Range(b)

Occurrences Airborne Cartride (pCi/m3) 4641 none detected none detected 0

(363)

Air Particulates Gross Beta Sta. 8S2 1.2E-2 1.2E-2(311/311) 1.3E-2(52/52) 0 (363) 1.1 mi., 1280 2.0E-3-4.5E-2

<I.OE-3-4.5E-2 3.OE-3-4.6E-2 Gamma Isotopic none detected none detected 0

(363)

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.

Av42ODC.06.11 A-I

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

50-275 and 50-323 San Luis Obispo, California (County, State)

Report Period 1/1/05 - 12/31/05 Medium or Pathway Type and Total Lower Limit Indicator with All Indicator All Control Sampled Number of of Highest Annual Mean Locations Locations Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Range(b)

Occurrences Direct TLD Packet(c) 3 mRlqtr Sta. 5SI Sta. 5F1 0

radiation (mR)

(372) 0.4 mi, 580 22.4 mR/qtr 16.2 mR/qtr 17.6 mR/qtr (12/12)

(360/360)

(12/12) 21.2-23.0 mR/qtr 9.1-23.2 mR/qtr 16.3-18.8 mR/qtr 89.6 mR/yr 64.8 mR/yr 70.4 mR/yr (360/360) 39.6-89.6 mR/yr Table Notation:

(a) Sensitivity of TID 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.

(

93 TLD packets are distributed quarterly at 31 locations.

I WA42ODC.06.11 A-2

Table A-3a Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant Docket No.

Report Period 50-275 and 50-323 San Luis Obispo, California (County, State) 1/1/05-12/31/05 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 (37)

Sta. OUT 7Mn none detected none detected

'Fe none detected none detected 8;Co none detected none detected

'3Co none detected none detected "Zn none detected none detected r

none detected none detected 4"I none detected none detected 467CS none detected none detected

" cs none detected none detected 4'Ba-La none detected none detected none detected none detected Tritium Analysis (37) 6H none detected 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 of detectable measurements at specified locations is indicated in parenthesis e.g., (10/12) means 10 samples out of 12 collected showed activity.

l~

A42 ODC.06. 1l A-3

Table A-3b Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant Docket No.

50-275 and 50-323 San Luis Obispo, California Report Period 1/1/05 - 12/31/05 (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, DWI none detected 0

(pCi/L)

Gamma Isotopic (24) 0 87Mn none detected 8'Fe none detected a;Co none detected 93Co none detected

'8Zn none detected

<8Zr none detected

<8Nb none detected 4641 none detected

" 7Cs none detected

":Cs none detected 4"Ba-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.

I!!4420DC.06. 11 A-4

Table A-4 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California (County, State)

Docket No.

Report Period 50-275 and 50-323 1/1/05-12/31/05 Medium or Pathway Type and Total Lower Limit Indicator Indicator All Control Sampled Number of Of Location(c)

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

Name, Distance Mean(b)

Mean(b)

Reportable Measurement)

Performed (LLD) and Direction Range(b)

Range(b)

Occurrences Mussels Gamma Isotopic (8)

Sta. DCM Sta. DCM Sta. 7C2 0

(pCi/kg original) 0.2 mi., 2700 7 Mn none detected none detected

'Fe none detected none detected

,;Co none detected none detected 93Co none detected none detected cNb none detected none detected 467Cs none detected none detected 46:Cs none detected none detected 4641 none detected none detected 65Zn 24.5(1/8) 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.

IR

-4420DC.06.

11 A-S

Table A-5 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California Docket No.

Report Period 50-275 and 50-323 1/1/05 - 12/31/05 (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., 2700 "Mn none detected none detected

'Fe none detected none detected 8"Co none detected none detected 93Co none detected none detected 98Zn none detected none detected

" 7Cs none detected none detected 46Cs 2.8(1/8) 3.3(1/8) 464none 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.

4O420DC.06.11 A-6

Table A-6 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California (County, State)

Docket No.

Report Period 50-275 and 50-323 1/1/05 - 12/31/05 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., 2700

'7Mn none detected none detected

'<Fe none detected none detected

' CO none detected none detected 8;Co 21.4 (2/12) none detected 19.2-23.5 "3Co none detected none detected 464i none detected none detected "3PAg none detected none detected 46 Cs none detected none detected 98] q 23.0(1/12) 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.

These samples are supplemental samples.

I!n4420DC.06. 11 A-7

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

Docket No.

Report Period 50-275 and 50-323 1/1/05 - 12/31/05 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 9Mn none detected none detected

'Fe none detected none detected

";Co none detected none detected 93Co none detected none detected 9Zn none detected none detected 467Cs none detected none detected 46:Cs 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.

I4420DC.06.1 1 A-8

Table A-8 Environmental Radiological Monitoring Program Summary Name of Facility Diablo Canyon Power Plant Docket No.

50-275 and 50-323 1/1/05 - 12/31/05 Location of Facility _ San Luis Obispo, California Report Period (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 (40) 6C1 4641 none detected

" 7Cs none detected 46: Cs 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.

1;!73Y420DC.06. 11 A-9

Table A-9 Environmental Radiological Monitoring Program Summary Name of Facility Location of Facility Diablo Canyon Power Plant San Luis Obispo, California Docket No.

50-275 and 50-323 1/1/05 - 12/31/05 Report Period (County, State)

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

Number of (Unit of Analyses Detection(a)

Name, Distance Mean(b)

Reportable Measurement)

Performed (LLD)

And Direction Range(b)

Occurrences Milk*

4641 (12)

Sta 5F2, 12.6 mi, 600 none detected 0

(pCi/L)

Gamma Isotopic (12) 0 467Cs none detected 4'"Cs none detected 4'Ba-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.

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

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

These samples are supplemental samples.

42420DC.06.11 A-10

Table A-10 Analytics Performance Evaluation Program( )

Sample/Analysis Radionuclide Month TES l Analytics Ratio Evaluation Milk/Gamma I-131 December 78.4 74.6 1.05 Agreement Ce-141 December 227 224 1.01 Agreement Cr-51 December 191 193 0.99 Agreement Cs-134 December 85.1 87.3 0.97 Agreement Cs-137 December 211 189 1.12 Agreement Co-58 December 77.3 77.5 1.00 Agreement Mn-54 December 162 152 1.07 Agreement Fe-59 December 88.4 82.4 1.07 Agreement Zn-65 December 158 154 1.02 Agreement Co-60 December 112 111 1.01 Agreement Water/Gamma Cr-51 June 327 330 0.99 Agreement Mn-54 June 131 136 0.96 Agreement Co-58 June 5.8 Non-agreement Fe-59 June 65.6 69.7 0.94 Agreement Co-60 June 161 158 1.02 Agreement Zn-65 June 175 169 1.04 Agreement Cs-134 June 103 104 0.99 Agreement Cs-137 June 215 206 1.05 Agreement Ce-141 June 107 101 1.06 Agreement I-131 June 93.7 93.8 1.00 Agreement Water/Gamma 1-131 December 54.4 53.1 1.02 Agreement Ce-141 December 171 165 1.04 Agreement Cr-51 December 139 142 0.98 Agreement Cs-134 December 62.9 64.3 0.98 Agreement Cs-137 December 147 139 1.06 Agreement Co-58 December 60.4 57.1 1.06 Agreement Mn-54 December 122 112 1.09 Agreement Fe-59 December 71.7 60.6 1.18 Agreement Zn-65 December 111 113 0.98 Agreement Co-60 December 80.5 81.4 0.99 Agreement Soil/Gamma Mn-54 June 0.260 0.246 1.06 Agreement Co-60 June 0.304 0.285 1.07 Agreement Zn-65 June 0.328 0.305 1.08 Agreement Cs-134 June 0.189 0.187 1.01 Agreement Cs-137 June 0.505 0.474 1.07 Agreement Ce-141 June 0.199 0.182 1.09 Agreement Cr-51 June 0.626 0.596 1.05 Agreement Co-58 June 0.100 Non-agreement Fe-59 June 0.148 0.126 1.17 Agreement

  • constituent present at level below detection limit for analytical lab - see section 4 p042ODC.06.11 A-11

Table A-10 (Continued)

Analytics Performance Evaluation Program(a)

Sample/Analysis Radionucfide Month TES Analytics Ratio Evaluations Vegetation/Gamma Ce-141 December 0.630 0.531 1.19 Agreement Cr-51 December 0.450 0.458 0.98 Agreement Cs-134 December 0.200 0.207 0.97 Agreement Cs-137 December 0.510 0.449 1.14 Agreement Co-58 December 0.210 0.184 1.14 Agreement Mn-54 December 0.430 0.361 1.19 Agreement Fe-59 December 0.240 0.195 1.23 Agreement Zn-65 December 0.420 0.365 1.15 Agreement Co-60 December 0.280 0.262 1.07 Agreement Gamma/Filter Ce-141 December 155 147 1.05 Agreement Cr-51 December 134 127 1.05 Agreement Cs-134 December 51.0 57.5 0.89 Agreement Cs-137 December 135 125 1.09 Agreement Co-58 December 52.3 51.0 1.03 Agreement Mn-54 December 119 100 1.18 Agreement Fe-59 December 66.1 54.2 1.22 Agreement Zn-65 December 113 101 1.11 Agreement Co-60 December 76.9 72.8 1.06 Agreement Cartridge/Gamma I-131 June 94.5 94.1 1.00 Agreement Water/Alpha Gross Alpha June 60.5 52.0 1.16 Agreement Water/Beta Gross Beta June 223 214 1.04 Agreement Water/Tritium Tritium June 8760 9100 0.96 Agreement Particulate Filter Alpha December 37.1 38.3 0.97 Agreement Particulate Filter Beta December 238 208 1.15 Agreement Table Notation:

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

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

4420DC.06.11 A-12

Appendix B ANALYTICAL RESULTS Fx42 2DC.06.11

Table B-1 Diablo Canyon Power Plant 2005 Annual Report State Cross-Check Results(a)

Gamma Activity K40 Activity H-3 Sample pCi/L pCiIL Activity 1-131 Activity Sample Station No.

Collection Date Original Original pCi/L pCi/L Drinking Water DW1 05A96 01/31/2005 ND ND ND ND 05B38 02/10/2005 ND ND ND ND 05C50 03/29/2005 ND ND ND ND 05D24 04/26/2005 ND ND ND ND 05E13 05/31/2005 ND ND ND ND 05E79 06/15/2005 ND ND ND ND 05G02 07/29/2005 ND ND ND ND 05G32 08/08/2005 ND ND ND ND 05H32 09/15/2005 ND ND ND ND 05121 10/24/2005 ND ND ND ND 05157 11/07/2005 ND ND ND ND 05J99 12/08/2005 ND ND ND ND Milk 5F2 05A97 01/31/2005 ND 1293 112 ND 05B59 02/16/2005 ND 1296 +/- 92 ND 05C51 03/29/2005 ND 1310+/- 111 ND 05D25 04/27/2005 ND 1292 +/- 89 ND 05E14 05/31/2005 ND 1376+/- 116 ND 05E80 06/15/2005 ND 1311 109 ND 05F96 07/28/2005 ND 1362 109 ND 05G33 08/08/2005 ND 1294+/- 102 ND 05H33 09/15/2005 ND 1334+/- 110 ND 05122 10/24/2005 ND 2238 +/- 159 ND 05158 11/07/2005 ND 1335 112 ND 05K00 12/08/2005 ND 1508 +/- 123 ND Table Notation:

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

I!"W42 0DC.06.11 B-I

Table B-1 (Continued)

Diablo Canyon Power Plant 2005 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 05A94 01/31/2005 ND 303 +/- 70 ND 05B87 03/01/2005 ND 324 +/- 48 ND 05C48 03/29/2005 ND 364 +/- 49 ND 05D22 04/26/2005 ND 286 +/- 72 ND 05E15 05/31/2005 ND 331 +/- 33 ND 05E96 06/23/2005 ND 272 +/- 62 ND 05F95 07/28/2005 ND 274 +/- 64 ND 05G34 08/08/2005 ND 314 +/- 66 ND 05H30 09/15/2005 ND 320 +/- 51 ND 05119 10/24/2005 ND 311 +/-45 ND 05159 11/072005 ND 318+/-54 ND 05KOI 12/08/2005 ND 362 +/- 52 ND Drinking Water 5S2 05A95 01/31/2005 ND ND ND ND 05B42 02/10/2005 ND ND ND ND 05C49 03/29/2005 ND ND ND ND 05D23 04/26/2005 ND ND ND ND 05E32 06/02/2005 ND ND ND ND 05E78 06/15/2005 ND ND ND ND 05G03 07/29/2005 ND 30 +/- 35 ND ND 05G31 08/08/2005 ND ND ND ND 05H31 09/15/2005 ND ND ND ND 05120 10/24/2005 ND ND ND ND 05156 11/07/2005 ND ND ND ND 05J98 12/08/2005 ND ND ND ND 420DC.06.11 B-2

Table B-1 (Continued)

Diablo Canyon Power Plant 2005 Annual Report State Cross-Check Results Gamma Activity K-40 Activity H-3 Sample pCi/L pCilL Activity 1-131 Activity Sample Station No.

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

DCM 05B52 03/01/2005 ND 17040 +/- 1220 05D29 04/25/2005 ND 11210 +/- 730 05G14 07/28/2005 ND 10190 +/- 730 05194 11/18/2005 Zn-65: 23.0 +/- 8.1 8109 +/- 491 Vegetable Greens(b) 7G1 05B89 03/01/2005 7Be:174+/- 112 3981 +/- 401 05E30 06/01/2005 ND 7399 +/-577 05G29 08/05/2005 ND 3118 +/- 307 05106 10/12/2005 ND 3852 +/-369 Fish(b)

DCM 05C22 02/03/2005 ND 3326 +/- 296 05E10 05/26/2005 ND 439+/- 311 05H13 09/02/2005 ND 3899 +/-485 05J48 11/23/2005 ND 4715 +/- 401 Sediment(c)

DCM 05E27 05/29/2005 ND 9180 +/- 720 Table Notation:

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

(c)

Results reported in pCi/kg dry sample.

Iaj"2 420D C.06.11 B-3

Table B-2 Diablo Canyon Power Plant 2005 Annual Report Marine and Terrestrial Sample Data Detected Nuclides (Non-naturally Occurring) - pCi/liter Water pCi/kg Algae & Fish Sta.

Collection Sam.

Description No.

Date No.

5Sco 65Zn 137cs Iridaea DCM 02/09/05 05B47 23.5 +/- 10.2 Salmon 2F1 05/04/05 05D49 6.9 +/- 4.0 Perch 7C2 05/29/05 05E25 3.3 +/- 3.8 Rockfish DCM 09/02/05 05H14 2.8 +/- 2.4 Giant Kelp DCM 11/18/05 05194 23.0 +/- 8.1 Mussels DCM 11/29/05 05J55 24.5 +/- 5.7 Iridaea DCM 11/29/05 05J56 19.2 +/- 10.3 x420D6C.0611 B-4

Table B-3 Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station OS2 (pCi/M3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 12/29/04 - 01/05/05 456.4 01/10/05 0.004 0.001 01/05/05 - 01/12/05 457.6 01/22/05 0.003 0.001 01/12/05 - 01/19/05 468.3 02/02/05 0.018 0.002 01/19/05 - 01/26/05 442.0 02/01/05 0.033 0.003 01/26/05 - 02/02/05 450.6 02/12/05 0.007 0.001 02/02/05 - 02/09/05 466.9 02/12/05 0.014 0.002 02/09/05 - 02/16/05 438.7 02/18/05 0.021 0.002 02/16/05 - 02/23/05 465.5 03/02/05 0.004 0.001 02/23/05 - 03/02/05 452.3 03/04/05 0.011 0.001 03/02/05 - 03/09/05 452.4 03/15/05 0.011 0.001 03/09/05 - 03/16/05 440.3 03/20/05 0.020 0.002 03/16/05 - 03/23/05 462.4 04101/05 0.011 0.001 03/23/05 - 03/30/05 443.3 04/08/05 0.008 0.001 03/30/05 - 04/06/05 448.1 04/14/05 0.009 0.001 04/06/05 - 04/13/05 442.0 04/19/05 0.010 0.001 04/13/05 - 04/20/05 451.1 04/23/05 0.007 0.001 04/20/05 - 04/27/05 456.2 05/03/05 0.010 0.001 04/27/05 - 05/04/05 438.9 05/09/05 0.007 0.001 05/04/05 - 05/11/05 446.9 05118105 0.004 0.001 05/11105 - 05/18/05 443.7 05/25/05 0.005 0.001 05/18/05 - 05/25/05 448.7 05/29/05 0.006 0.001 05/25/05 - 06/01/05 448.6 06/07/05 0.007 0.001 06/01/05 - 06/08/05 452.8 06/12/05 0.006 0.001 06/08/05 - 06/15/05 421.1 06/24/05 0.004 0.001 06/15/05 - 06/22/05 429.7 07/08/05 0.004 0.001 06/22/05 - 06/29/05 435.0 07/12/05 0.004 0.001 06/29/05 - 07/06/05 433.3 07/16/05 0.004 0.001 07/06/05 - 07/13/05 442.1 07/20/05

<0.001 07/13/05 - 07/20/05 446.1 07/24/05 0.003 0.001 07/20/05 - 07/27/05 433.3 07/31/05 0.007 0.001 07/27/05 - 08/03/05 423.1 08/10/05 0.008 0.001 08/03/05 - 08/10/05 406.5 08/15/05 0.006 0.001 08/10/05 - 08/17/05 420.4 08/25/05 0.009 0.002 08/17/05 - 08/24/05 405.3 08/31/05 0.006 0.001 08/24/05 - 08/31/05 453.8 09/04/05 0.012 0.002 08/31/05 - 09/07/05 460.0 09/19/05 0.010 0.002 09/07/05 - 09/14/05 469.8 09/20/05 0.008 0.001 09/14/05 - 09/21/05 452.2 09/27/05 0.013 0.002 f442ODC.06.11 B-5

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station OS2 (pCi/m3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 09/21/05 - 09/28/05 445.0 10/02/05 0.017 0.002 09/28/05 - 10/05/05 460.1 10/08/05 0.016 0.002 10/05/05 - 10/12/05 433.2 10/16/05 0.012 0.002 10/12/05 - 10/19/05 430.5 10/22/05 0.015 0.002 10/19/05 - 10/26/05 439.0 10/29/05 0.009 0.002 10/26/05 - 11/02/05 452.7 11/05/05 0.017 0.002 11/02/05 - 11/09/05 452.9 11/18/05 0.012 0.002 11/09/05-11/16/05 446.3 11/28/05 0.015 0.002 11/16/05 - 11/23/05 440.3 12/01/05 0.041 0.004 11/23/05 - 11/30/05 471.9 12/08/05 0.023 0.003 11/30/05 - 12/07/05 448.0 12/11/05 0.011 0.002 12/07/05 - 12/14/05 433.3 12/18/05 0.035 0.004 12/14/05 - 12/21/05 419.0 12/25/05 0.039 0.004 12/21/05 - 12/28/05 424.2 01/01/06 0.008 0.002 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCinm 3) 12/29/04 - 03/30/05 04/14/05 ND 03/30/05 - 06/29/05 07/21/05 ND 06/29/05 - 09/28/05 10/12/05 ND 09/28/05-12/28/05 01/12/06 ND Table Notation:

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

Volume determined by calculation using timer and flow rate data.

I!

M442ODC.06.11 B-6

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 1SI (pCi/m3)

Gross Beta Collection Period Volume (M3)

Counting Date Activity 2Sigma Gamma Scan 12/29/04 - 01/05/05 500.9 01/10/05 0.004 0.001 01/05/05 - 01/12/05 495.5 01/22/05 0.004 0.001 01/12/05 - 01/19/05 496.1 01/31/05 0.017 0.002 01/19/05 - 01/26/05 474.8 02/01/05 0.034 0.003 01/26/05 - 02/02/05 488.3 02/14/05 0.007 0.001 02/02/05 - 02/09/05 512.5 02/12/05 0.015 0.002 02/09/05 - 02/16/05 477.5 02/18/05 0.016 0.002 02/16/05 - 02/23/05 514.2 03/02/05 0.005 0.001 02/23/05 - 03/02/05 423.7 03/04/05 0.013 0.002 03/02/05 - 03/09/05 478.0 03/15/05 0.010 0.001 03/09/05 - 03/16/05 474.0 03/20/05 0.021 0.002 03/16/05 - 03/23/05 497.7 04/01/05 0.010 0.001 03/23/05 - 03/30/05 484.8 04/08/05 0.008 0.001 03/30/05 - 04/06/05 499.2 04/14/05 0.010 0.001 04/06/05 - 04/13/05 504.5 04/19/05 0.006 0.001 04/13/05 - 04/20/05 472.5 04/23/05 0.006 0.001 04/20/05 - 04/27/05 492.9 05/03/05 0.008 0.001 04/27/05 - 05/04/05 467.1 05/10/05 0.006 0.001 05/04/05 - 05/11/05 480.1 05/18/05 0.004 0.001 05/11/05 - 05/18/05 476.3 05/25/05 0.004 0.001 05/18/05 - 05/25/05 483.5 05/29/05 0.006 0.001 05/25/05 - 06/01/05 489.7 06/07/05 0.006 0.001 06101/05 - 06/08/05 505.3 06/12/05 0.007 0.001 06/08/05 - 06/15105 418.3 06/24/05 0.004 0.001 06/15/05 - 06/22/05 423.3 07/08/05 0.004 0.001 06/22/05 - 06/29/05 427.4 07/12/05 0.004 0.001 06/29/05 - 07/06/05 431.0 07/16/05 0.004 0.001 07/06/05 - 07/13/05 445.3 07/20/05 0.002 0.001 07/13/05 - 07/20/05 432.6 07/24/05 0.004 0.001 07/20/05 - 07/27/05 423.6 07/31/05 0.007 0.001 07/27/05 - 08/03/05 422.2 08/10/05 0.013 0.002 08/03/05 - 08/10/05 424.3 08/15/05 0.006 0.001 08/10/05 - 08/17/05 421.4 08/25/05 0.009 0.002 08/17/05 - 08/24/05 399.7 08/31/05 0.009 0.002 08/24/05 - 08/31/05 439.4 09/04/05 0.013 0.002 08/31/05 - 09/07/05 440.8 09/19/05 0.011 0.002 09/07/05 - 09/14/05 434.9 09/20/05 0.009 0.002 09/14/05 - 09/21/05 449.9 09/25/05 0.010 0.002 lq42ODC.06.11 B-7

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 151 (pCi/m3)

Gross Beta Collection Period Volume (M3)

Counting Date Activity 2Sigma Gamma Scan 09/21/05 - 09/28/05 420.1 10/02/05 0.018 0.002 09/28/05 - 10105/05 448.7 10/08/05 0.013 0.002 10/05/05 - 10/12/05 457.1 10/16/05 0.011 0.002 10/12/05 - 10/19/05 426.4 10/22/05 0.012 0.002 10/19/05 - 10/26/05 440.2 10/29/05 0.009 0.002 10/26/05-11/02/05 451.3 11/05/05 0.016 0.002 11/02/05-11/09/05 450.2 11/18/05 0.013 0.002 11/09/05 - 11/16/05 449.2 11/28/05 0.014 0.002 11/16/05 - 11/23/05 427.5 12/01/05 0.032 0.004 11/23/05 - 11/30/05 456.8 12/08/05 0.022 0.003 11/30/05 - 12/07/05 410.3 12/11/05 0.011 0.002 12/07/05 - 12/14/05 435.4 12/18/05 0.031 0.003 12/14/05 - 12/21/05 419.8 12/25/05 0.033 0.004 12/21/05 - 12/28/05 427.3 01/01/06 0.013 0.002 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/m3) 12/29/04 - 03/30/05 04/14/05 ND 03/30/05 - 06/29/05 07/21/05 ND 06/29/05 - 09/28/05 10/12/05 ND 09/28/05 - 12/28/05 01/18/05 ND Table Notation:

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

Volume determined by calculation using timer and flow rate data.

No sample collected.

I-M O;M 42DC.06.11I B-8

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station SF1 (pCim 3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 12/29/04 - 01/05/05 476.9 01/09/05 0.004 0.001 01/05/05 - 01/12/05 479.6 01/21/05 0.004 0.001 01/12/05 - 01/19/05 493.9 01/31/05 0.019 0.002 01/19/05 - 01/26/05 459.8 02/01/05 0.034 0.003 01/26/05 - 02/02/05 474.1 02/11/05 0.009 0.001 02/02/05 - 02/09/05 482.6 02/12/05 0.014 0.002 02/09/05 - 02/16/05 495.2 02/18/05 0.018 0.002 02/16/05 - 02/23/05 465.2 03/01/05 0.004 0.001 02/23/05 - 03/02/05 491.2 03/04/05 0.016 0.002 03/02/05 - 03/09/05 456.9 03/14/05 0.009 0.001 03/09/05 - 03/16/05 480.7 03/20/05 0.023 0.002 03/16/05 - 03/23/05 499.1 04/01/05 0.010 0.001 03/23/05 -03/30/05 477.9 04/07/05 0.008 0.001 03/30/05 - 04/06/05 484.3 04/13/05 0.009 0.001 04/06/05 - 04/13/05 457.6 04/19/05 0.006 0.001 04/13/05 - 04/20/05 485.9 04/23/05 0.009 0.001 04/20/05 - 04/27/05 501.0 05/03/05 0.009 0.001 04/27/05 -05/04/05 468.5 05/09/05 0.005 0.001 05/04/05 - 05/11/05 484.9 05/17/05 0.004 0.001 05/11/05 - 05/18/05 482.7 05/24/05 0.005 0.001 05/18/05 - 05/25/05 496.1 05/29/05 0.006 0.001 05/25/05 - 06/01/05 474.8 06/06/05 0.007 0.001 06/01/05 - 06/08/05 484.5 06/11/05 0.008 0.001 06/08/05 - 06/15/05 423.1 06/24/05 0.005 0.001 06/15/05 - 06/22/05 432.0 07/07/05 0.004 0.001 06/22/05 - 06/29/05 413.9 07/12/05 0.004 0.001 06/29/05 - 07/06/05 431.4 07/15/05 0.005 0.001 07/06/05 - 07/13/05 426.9 07/19/05 0.003 0.001 07/13/05 - 07/20/05 434.6 07/23/05 0.006 0.001 07/20/05 - 07/27/05 428.4 07/31/05 0.011 0.001 07/27/05 - 08/03/05 416.9 08/10/05 0.010 0.001 08/03/05 - 08/10/05 432.1 08/15/05 0.007 0.001 08/10/05 - 08/17/05 425.2 08/27/05 0.011 0.002 08/17/05 - 08/24/05 444.8 08/31/05 0.009 0.002 08/24/05 - 08/31/05 422.3 09/03/05 0.014 0.002 08/31/05 - 09/07/05 447.4 09/19/05 0.012 0.002 09/07/05 - 09/14/05 429.0 09/20/05 0.010 0.002 09/14/05 - 09/21/05 455.4 09/25/05 0.013 0.002 F

!42O 0DC.06.11 B-9

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 5F1 (pCi/M3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 09/21/05 - 09/28/05 433.8 10/02/05 0.021 0.002 09/28/05 - 10105105 432.0 10/08/05 0.021 0.003 10105105 - 10/12/05 443.7 10/16/05 0.014 0.002 10/12/05 - 10/19/05 441.6 10/22/05 0.018 0.002 10/19/05 - 10/26/05 456.6 10/29/05 0.011 0.002 10/26/05 - 11/02/05 436.1 11105/05 0.022 0.003 11/02/05-11/09/05 448.7 11/18/05 0.013 0.002 11/09/05 - 11/16/05 439.3 11/28/05 0.018 0.002 11116105 - 11/23/05 413.3 12/01/05 0.046 0.005 11/23/05 - 11/30/05 447.6 12/08/05 0.028 0.003 11/30/05-12/07/05 415.9 12/11/05 0.017 0.002 12/07/05 - 12/14/05 430.0 12/18/05 0.042 0.004 12/14/05 - 12/21/05 408.3 12/25/05 0.038 0.004 12/21/05-12/28/05 419.9 01/01/06 0.011 0.002 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/m3) 12/29/04 - 03/30/05 04/14/05 ND 03/30/05 - 06/29/05 07/21/05 ND 06129/05 - 09/28/05 10/11/05 ND 09/28/05 - 12/28/05 01/12/06 ND Table Notation:

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

Volume determined by calculation using timer and flow rate data.

0 420DC.06.11 B-10

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 7D1 (pCi/M3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 12/29/04 - 01/05/05 458.2 01/09/05 0.005 0.001 01/05/05 - 01/12/05 462.6 01/21/05 0.004 0.001 01/12/05 - 01/19/05 476.1 01/31/05 0.019 0.002 01/19/05 - 01/26/05 460.4 02/01/05 0.034 0.003 01/26/05 - 02/02/05 444.3 02/12/05 0.006 0.001 02/02/05 - 02/09/05 460.7 02/12/05 0.014 0.002 02/09/05 - 02/16/05 455.8 02/18/05 0.018 0.002 02/16/05 - 02/23/05 462.2 03/01/05 0.004 0.001 02/23/05 - 03/02/05 467.7 03/04/05 0.013 0.001 03/02/05 - 03/09/05 458.0 03/14/05 0.009 0.001 03/09/05 - 03/16/05 450.3 03/20/05 0.021 0.002 03/16/05 - 03/23/05 465.9 04/01/05 0.010 0.001 03/23/05 -03/30/05 442.9 04/07/05 0.008 0.001 03/30/05 - 04/06/05 446.8 04/14/05 0.010 0.001 04/06/05 - 04/13/05 449.1 04/19/05 0.007 0.001 04/13/05 - 04/20/05 460.3 04/23/05 0.009 0.001 04/20/05 - 04/27/05 359.4 05/03/05 0.008 0.001 04/27/05 - 05/04/05 441.3 05/09/05 0.006 0.001 05/04/05 - 05/11/05 455.5 05/17/05 0.005 0.001 05/11/05 - 05/18/05 455.1 05/25/05 0.006 0.001 05/18/05 - 05/25/05 466.5 05/29/05 0.006 0.001 05/25/05 - 06/01/05 456.5 06/07/05 0.006 0.001 06/01/05 - 06/08/05 469.1 06/11/05 0.007 0.001 06/08/05 - 06/15/05 414.6 06/24/05 0.003 0.001 06/15/05 - 06/22/05 424.9 07/08/05 0.006 0.001 06/22/05 - 06/29/05 422.8 07/12/05 0.004 0.001 06/29/05 - 07/06/05 425.7 07/16/05 0.005 0.001 07/06/05 - 07/13/05 427.5 07/20/05 0.002 0.001 07/13/05 - 07/20/05 443.2 07/23/05 0.005 0.001 07/20/05 - 07/27/05 429.9 07/31/05 0.008 0.001 07/27/05 - 08/03/05 415.6 08/10/05 0.008 0.001 08/03/05 - 08/10/05 442.3 08/15/05 0.008 0.001 08/10/05 - 08/17/05 413.6 08/25/05 0.009 0.002 08/17/05 - 08/24/05 447.5 09/01/05 0.009 0.002 08/24/05 - 08/31/05 422.4 09/04/05 0.015 0.002 08/31/05 - 09/07/05 440.8 09/19/05 0.010 0.002 09/07/05 - 09/14/05 439.3 09/20/05 0.009 0.001 09/14/05 - 09/21/05 464.8 09/25/05 0.011 0.002 1%42 4DC.06.11 B-Il

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 7D1 (pCinM 3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 09/21/05 - 09/28/05 428.3 10/02/05 0.017 0.002 09/28/05 - 10/05/05 444.7 10/08/05 0.016 0.002 10/05/05 - 10/12/05 458.5 10/16/05 0.013 0.002 10/12/05 - 10/19/05 425.8 10/22/05 0.013 0.002 10/19/05 - 10/26/05 442.4 10/29/05 0.009 0.002 10/26/05 - 11/02/05 429.8 11105105 0.016 0.002 11/02/05 - 11/09/05 448.8 11/18/05 0.012 0.002 11/09/05 - 11/16/05 450.6 11/28/05 0.016 0.002 11116/05-11/23/05 445.8 12/01/05 0.037 0.004 11/23/05 - 11/30/05 476.1 12/07/05 0.025 0.003 11/30/05 - 12/07/05 430.9 12/11/05 0.013 0.002 12/07/05 - 12/14/05 457.8 12/18/05 0.033 0.004 12/14/05 - 12/21/05 419.1 12/25/05 0.039 0.004 12/21/05 - 12/28/05 428.6 01/01/06 0.010 0.002 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/M3) 12/31/03 - 03/31/04 04/15/04 ND 03/31/04 - 06/30/04 07/28/04 ND 06/30/04 - 09/29/04 10/21/04 ND 09/29/04 - 12/29/04 01/12/05 ND Table Notation:

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

Volume determined by calculation using timer and flow rate data.

Q420)DC.06.11 B-12

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station SS1 (pCi/m3)

Gross Beta Collection Period Volume (M3)

Counting Date Activity 2Sigma Gamma Scan 12/29/04 - 01/05/05 453.7 01/09/05 0.004 0.001 01/05/05 - 01/12/05 461.1 01/21/05 0.004 0.001 01/12/05 - 01/19/05 447.7 01/31/05 0.018 0.002 01/19/05 - 01/26/05 428.2 02/01/05 0.034 0.003 01/26/05 - 02/02/05 436.8 02/12/05 0.007 0.001 02/02/05 - 02/09/05 452.5 02/12/05 0.014 0.002 02/09/05 - 02/16/05 426.4 02/18/05 0.017 0.002 02/16/05 - 02/23/05 452.2 03/01/05 0.004 0.001 02/23/05 - 03/02/05 452.6 03/04/05 0.012 0.001 03/02/05 - 03/09/05 452.7 03/15/05 0.010 0.001 03/09/05 - 03/16/05 441.3 03/20/05 0.024 0.002 03/16/05 - 03/23/05 464.0 04/01/05 0.010 0.001 03/23/05 - 03/30/05 444.5 04/07/05 0.008 0.001 03/30/05 - 04/06/05 450.7 04/14/05 0.011 0.001 04/06/05 - 04/13/05 443.8 04/19/05 0.007 0.001 04/13/05 - 04/20/05 453.8 04/23/05 0.006 0.001 04/20/05 - 04/27/05 460.8 05/03/05 0.009 0.001 04/27/05 - 05/04/05 443.4 05/09/05 0.007 0.001 05/04/05 - 05/11/05 451.1 05/18/05 0.004 0.001 05/11/05 - 05/18/05 447.1 05/24/05 0.005 0.001 05/18/05 - 05/25/05 450.3 05/29/05 0.006 0.001 05/25/05 - 06/01/05 450.2 06/07/05 0.006 0.001 06/01/05 - 06/08/05 453.7 06/11/05 0.006 0.001 06/08/05 - 06/15/05 408.8 06/24/05 0.003 0.001 06/15/05 - 06/22/05 420.4 07/08/05 0.003 0.001 06/22/05 - 06/29/05 418.0 07/12/05 0.004 0.001 06/29/05 - 07/06/05 428.5 07/15/05 0.004 0.001 07/06/05 - 07/13/05 420.8 07/22/05 0.003 0.001 07/13/05 - 07/20/05 437.7 07/23/05 0.004 0.001 07/20/05 - 07/27/05 435.3 07/31/05 0.008 0.001 07/27/05 - 08/03/05 424.6 08/10/05 0.008 0.001 08/03/05 - 08/10/05 420.6 08/15/05 0.005 0.001 08/10/05 - 08/17/05 421.9 08/25/05 0.010 0.002 08/17/05 - 08/24/05 390.8 08/31/05 0.006 0.001 08/24/05 - 08/31/05 450.4 09/04/05 0.013 0.002 08/31/05 - 09/07/05 449.3 09/19/05 0.011 0.002 09/07/05 - 09/14/05 459.8 09/20/05 0.008 0.001 09/14/05 - 09/21/05 447.2 09/25/05 0.011 0.002 0420DC.06.11 B-13

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 8S1 (pCim 3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 09/21/05 - 09/28/05 428.5 10/02/05 0.017 0.002 09/28/05 - 10105105 449.1 10/08/05 0.018 0.002 10105105 - 10/12/05 427.5 10/16/05 0.013 0.002 10/12/05 - 10/19/05 432.1 10/22/05 0.012 0.002 10/19/05 - 10/26/05 447.7 10/29/05 0.010 0.002 10/26/05 - 11/02/05 442.0 11105105 0.015 0.002 11/02/05-11/09/05 440.7 11/18/05 0.016 0.002 11/09/05-11116105 440.8 11/28/05 0.015 0.002 11/16/05-11/23/05 420.8 12/01/05 0.039 0.004 11/23/05 - 11/30/05 457.5 12/07/05 0.020 0.003 11/30105-12/07/05 423.0 12/11/05 0.014 0.002 12/07/05-12/14/05 433.5 12/18/05 0.031 0.003 12/14/05-12/21/05 419.3 12/26/05 0.038 0.004 12/21/05-12/28/05 412.2 01/01/06 0.011 0.002 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCim 3) 12/29/04 - 03/30/05 04/14/05 ND 03/30/05 - 06/29/05 07/21/05 ND 06/29/05 - 09/28/05 10112/05 ND 09/28/05 - 12/28/05 01/12/06 ND Table Notation:

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

Volume determined by calculation using timer and flow rate data.

KC242 0DC.06.11 B-14

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 8S2 (pCi/M3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 12/29/04 - 01/05/05 464.5 01/09/05 0.003 0.001 01/05/05 - 01/12/05 465.9 01/22/05 0.004 0.001 01/12/05 - 01/19/05 476.0 01/31/05 0.019 0.002 01/19/05 - 01/26/05 463.6 02/01/05 0.033 0.003 01/26/05 - 02/02/05 450.0 02/12/05 0.007 0.001 02/02/05 - 02/09/05 469.4 02/12/05 0.016 0.002 02/09/05 - 02/16/05 462.7 02/18/05 0.017 0.002 02/16/05 - 02/23/05 483.8 03/02/05 0.004 0.001 02/23/05 - 03/02/05 466.0 03/04/05 0.014 0.002 03/02/05 - 03/09/05 466.2 03/15/05 0.010 0.001 03/09/05 - 03/16/05 460.2 03/20/05 0.021 0.002 03/16/05 - 03/23/05 476.2 04/01/05 0.011 0.001 03/23/05 - 03/30/05 460.4 04/08/05 0.007 0.001 03/30/05 - 04/06/05 461.7 04/14/05 0.010 0.001 04/06/05 - 04/13/05 464.0 04/19/05 0.006 0.001 04/13/05 - 04/20/05 469.9 04/23/05 0.008 0.001 04/20/05 - 04/27/05 478.4 05/03/05 0.008 0.001 04/27/05 - 05/04/05 457.5 05/09/05 0.006 0.001 05104105 - 05111105 468.1 05/18/05 0.004 0.001 05111105 - 05/18/05 466.3 05/24/05 0.006 0.001 05/18/05 - 05/25/05 473.4 05/29/05 0.005 0.001 05/25/05 - 06/01/05 464.8 06/07/05 0.006 0.001 06/01/05 - 06/08/05 477.2 06/11/05 0.007 0.001 06/08/05 - 06/15/05 410.7 06/24/05 0.004 0.001 06/15/05 - 06/22/05 432.2 07/08/05 0.003 0.001 06/22/05 - 06/29/05 431.2 07/12/05 0.004 0.001 06/29/05 - 07/06/05 438.0 07/16/05 0.004 0.001 07/06/05 - 07/13/05 439.2 07/20/05 0.002 0.001 07/13/05 - 07/20/05 441.0 07/24/05 0.004 0.001 07/20/05 - 07/27/05 431.8 07/31/05 0.007 0.001 07/27/05 - 08/03/05 429.4 08/10/05 0.009 0.001 08/03/05 - 08/10/05 428.0 08/15/05 0.004 0.001 08/10/05 - 08/17/05 423.4 08/25/05 0.009 0.002 08/17/05 - 08/24/05 408.8 08/31/05 0.007 0.002 08/24/05 - 08/31/05 479.1 09/04/05 0.012 0.002 08/31/05 - 09/07/05 446.3 09/19/05 0.011 0.002 09/07/05 - 09/14/05 442.4 09/20/05 0.010 0.002 09/14/05 - 09/21/05 451.4 09/25/05 0.014 0.002 R

A42 2DC.06.11 B-15

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station 8S2 (pCi/M3)

Gross Beta Collection Period Volume (m3)

Countingg Date Activity 2Sima Gamma Scan 09/21/05 - 09/28/05 442.9 10/02/05 0.021 0.003 09/28/05 - 10/05/05 441.3 10/08/05 0.015 0.002 10/05/05 - 10/12/05 463.3 10/16/05 0.013 0.002 10/12/05 - 10/19/05 431.6 10/22/05 0.015 0.002 10/19/05 - 10/26/05 443.5 10/29/05 0.010 0.002 10/26/05 - 11/02/05 446.8 11/05105 0.018 0.002 11/02/05-11/09/05 444.6 11/18/05 0.012 0.002 11/09/05-11/16/05 436.7 11/28/05 0.014 0.002 11/16/05 - 11/23/05 424.5 12/01/05 0.045 0.005 11/23/05 - 11/30/05 451.9 12/08/05 0.024 0.003 11/30/05 - 12/07/05 425.0 12/11/05 0.013 0.002 12/07/05 - 12/14/05 435.7 12/18/05 0.032 0.004 12/14/05-12/21/05 418.1 12/25/05 0.035 0.004 12/21/05-12/28/05 428.8 01/01/06 0.011 0.002 Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/n 3) 12/29/04 - 03/30/05 04/14/05 ND 03/30/05 - 06/29/05 07/21/05 ND 06/29/05 - 09/28/05 10/12/05 ND 09/28/05 - 12/28/05 01/12/06 ND Table Notation:

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

Volume determined by calculation using timer and flow rate data.

l442 20DC.06.1I B-16

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station MT1 (pCi/m3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 12/29/04 - 01/05/05 517.4 01/09/05 0.004 0.001 01/05/05 - 01/12/05 523.3 01/21/05 0.003 0.001 01/12/05 - 01/19/05 523.3 01/31/05 0.019 0.002 01/19/05 - 01/26/05 506.1 02/01/05 0.032 0.003 01/26/05 - 02/02/05 514.6 02/12/05 0.008 0.001 02/02/05 - 02/09/05 517.0 02/12/05 0.015 0.002 02/09/05 - 02/16/05 507.3 02/18/05 0.016 0.002 02/16/05 - 02/23/05 516.2 03/01/05 0.005 0.001 02/23/05 - 03/02/05 518.4 03/04/05 0.010 0.001 03/02/05 - 03/09/05 509.6 03/14/05 0.009 0.001 03/09/05 - 03/16/05 501.0 03/20/05 0.023 0.002 03/16/05 - 03/23/05 519.9 04/01/05 0.010 0.001 03/23/05 - 03/30/05 498.5 04/07/05 0.008 0.001 03/30/05 - 04/06/05 507.4 04/13/05 0.011 0.001 04/06/05 - 04/13/05 512.1 04/19/05 0.006 0.001 04/13/05 - 04/20/05 518.6 04/23/05 0.007 0.001 04/20/05 - 04/27/05 520.9 05/03/05 0.009 0.001 04/27/05 - 05/04/05 504.2 05/09/05 0.006 0.001 05/04/05 - 05/11/05 05/11/05 - 05/18/05 511.3 05/24/05 0.005 0.001 05/18/05 - 05/25/05 507.8 05/29/05 0.007 0.001 05/25/05 - 06/01/05 518.1 06/06/05 0.006 0.001 06/01/05 - 06/08/05 526.0 06/11/05 0.008 0.001 06/08/05 - 06/15/05 423.5 06/23/05 0.004 0.001 06/15/05 - 06/22/05 423.0 07/07/05 0.006 0.001 06/22/05 - 06/29/05 432.0 07/12/05 0.004 0.001 06/29/05 - 07/06/05 431.7 07/15/05 0.004 0.001 07/06/05 - 07/13/05 435.7 07/19/05 0.002 0.001 07/13/05 - 07/20/05 454.8 07/23/05 0.004 0.001 07/20/05 - 07/27/05 474.5 07/30/05 0.007 0.001 07/27/05 - 08/03/05 534.0 08/09/05 0.008 0.001 08/03/05 - 08/10/05 422.1 08/16/05 0.005 0.001 08/10/05 - 08/17/05 421.1 08/25/05 0.009 0.002 08/17/05 - 08/24/05 448.3 08/31/05 0.006 0.001 08/24/05 - 08/31/05 449.8 09/03/05 0.012 0.002 08/31/05 - 09/07/05 420.6 09/19/05 0.010 0.002 09/07/05 - 09/14/05 424.2 09/20/05 0.008 0.001 09/14/05 - 09/21/05 439.6 09/25/05 0.016 0.002 I442ODC.06.11 B-17

Table B-3 (Continued)

Diablo Canyon Power Plant 2005 Annual Report Airborne Radioactivity Station MT1 (pCi/M3)

Gross Beta Collection Period Volume (m3)

Counting Date Activity 2Sigma Gamma Scan 09/21/05 - 09/28/05 423.6 10/02/05 0.017 0.002 09/28/05 - 10/05/05 443.8 10/08/05 0.017 0.002 10/05/05 - 10/12/05 423.2 10/16/05 0.013 0.002 10/12/05 - 10/19/05 432.0 10/22/05 0.012 0.002 10/19/05 - 10/26/05 442.5 10/29/05 0.009 0.002 10/26/05 - 11/02/05 447.3 11/05/05 0.017 0.002 11/02/05 - 11/09/05 440.0 11/18/05 0.011 0.002 11/09/05-11/16/05 435.6 11/28/05 0.016 0.002 11/16/05 - 11/23/05 435.4 12/03/05 0.044 0.005 11/23/05 - 11/30/05 457.7 12/07/05 0.022 0.003 11/30/05 - 12/07/05 400.5 12/10/05 0.013 0.002 12/07/05 - 12/14/05 364.1 12/18/05 0.032 0.004 12/14/05 - 12/21/05 442.3 12/25/05 0.036 0.004 12/21/05 - 12/28/05 426.2 01/01/06 0.009 0.002

  • no sample collected - equipment failure Gamma Activity on Filter Composites Counting Concentration Collection Period Date Nuclide (pCi/m3) 12/29/04 - 03/30/05 04/13/05 ND 03/30/05 - 06/29/05 07/21/05 ND 06/29/05 - 09/28/05 10/11/05 ND 09/28/05 - 12/28/05 01/12/06 ND Table Notation:

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

Volume determined by calculation using timer and flow rate data.

Ikt 420DC.06.1I B-18

Table B-4 Diablo Canyon Power Plan 2005 Annual Report Environmental Dosimetry Quarterly Total (mR) (a)

Annual Quarterly Station 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr TOTAL AVG

+/-2cT MT1 WN1 0S1 5S1 6S1 8S1 8S2 5S3 2D1 4D1 SFI lAl 7D2 7G2 7C1 7F1 OBI 7D1 4C1 OS2 l11 2S1 3S1 4S1 7S1 9S1 ic1 5CI 3D1 6D1 SF3 21.9 +/- 0.5 12.3 +/- 0.2 21.0 +/- 0.6 22.9 +/- 0.3 13.9 +/- 0.4 17.2 +/- 0.2 21.7+/-0.4 18.9 +/- 0.5 12.8 +/- 0.5 17.2 +/- 2.5 18.2 +/- 0.4 12.1 +/- 0.2 16.6 +/- 0.4 17.7 +/- 0.6 18.3 +/- 0.4 17.5 +/- 0.3 9.8 0.2 11.5 +/- 0.3 11.0+/-0.3 17.0 0.4 16.7 0.3 16.9 0.5 21.3 +/-0.4 19.0 +/- 0.4 18.1 +/-0.4 21.5 +/- 0.6 13.4+/- 0.3 15.5 i 0.4 12.8 +/- 0.1 13.2 0.4 16.9 0.5 22.5 +/- 0.5 13.2 +/- 0.3 21.1 +/- 0.6 23.0 +/- 0.5 14.4 +/- 0.3 17.4 +/- 0.3 22.2 +/- 0.5 20.0 +/- 0.7 13.4 +/- 0.4 13.3 +/- 0.5 18.8 +/- 0.3 13.0 +/- 0.2 17.3 +/- 0.5 18.4 +/- 0.4 19.3 +/- 0.5 18.9+/- 0.3 10.8 +/- 0.3 12.2 +/- 0.2 11.3 +/- 0.4 18.3 +/- 0.3 17.2 +/- 0.6 18.1 +/- 0.4 22.5 +/- 0.5 19.5 +/- 0.3 19.0 +/- 0.5 23.2 +/- 0.5 14.5 +/- 0.3 16.5 +/- 0.2 13.6 +/- 0.3 14.4 +/- 0.3 17.9 +/- 0.6 20.4 +/- 0.5 12.3 +/- 0.4 19.9 +/- 0.6 22.5 +/- 0.5 13.9 +/- 0.3 16.7 +/- 0.6 20.5 +/- 0.5 19.3 +/- 0.5 12.6 +/- 0.4 11.6+/- 0.3 17.1+/- 0.3 11.9+/- 0.3 16.2 +/- 0.6 16.9 +/- 0.5 17.9 +/- 0.5 16.5 +/- 0.4 9.9 0.2 11.4 0.3 10.5 0.3 17.4i 0.6 16.8i 0.4 16.4i 0.3 21.1 0.6 18.5 0.3 18.6+/- 0.4 22.6 i 0.4 12.8i 0.4 16.8i 0.4 13.0i 0.3 14.3 i 0.3 16.9 0.4 20.0 +/- 0.4 11.4+/-0.3 18.6+/-0.4 21.2 +/- 0.6 12.2 +/- 0.3 15.5 +/- 0.3 19.0 +/- 0.5 17.4 +/- 0.5 11.4+/-0.3 10.5 +/- 0.3 16.3 +/- 0.4 10.6 +/- 0.3 15.2 +/- 0.3 15.6 +/- 0.7 16.3 +/- 0.3 15.9 +/- 0.4 9.1 +/-0.4 10.2 0.4 9.3 +/- 0.2 15.7i 0.4 15.7i 0.4 14.6i 0.5 18.5 0.3 17.8 +/- 0.6 17.0 +/- 0.3 20.0 +/- 0.6 11.7 +/- 0.3 15.3 +/- 0.3 11.4+/- 0.4 12.1 +/- 0.4 15.5 +/- 0.4 84.8 49.2 80.6 89.6 54.4 66.8 83.4 75.6 50.2 52.6 70.4 47.6 65.3 68.6 71.8 68.8 39.6 45.3 42.1 68.4 66.4 66.0 83.4 74.8 72.7 87.3 52.4 64.1 50.8 54.0 67.2 21.2 12.3 20.2 22.4 13.6 16.7 20.9 18.9 12.6 13.1 17.6 11.9 16.3 17.2 17.9 17.2 9.9 11.3 10.5 17.1 16.6 16.5 20.9 18.7 18.2 21.8 13.1 16.0 12.7 13.5 16.8 2.4 1.4 2.3 1.7 1.9 1.7 2.9 2.2 1.7 5.9 2.2 2.0 1.8 2.4 2.5 2.6 1.4 1.7 1.8 2.2 1.3 2.9 3.4 1.5 1.7 2.8 2.3 1.5 1.9 2.2 1.9 Table Notation:

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

IO420DC.06.1I B-19

Table B-5 Land Use Census 2005 Distance in Kilometers (and Miles) from the Unit 1 Center Line to the Nearest Milk Animal, Residence, and Vegetable Garden Nearest Nearest Residence Vegetable 22V 2 Degree (a)

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

Degree km (mi)

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

None None None NNE None 5.21 (3.2) 019.8 7.08 (4.4)(c)

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 7.24 (4.5)(d)

ESE None None 5.31 (3.3)(e)

SE None None None Table Notation:

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

° BLANCHARD residence will remain as full-time residence for critical receptor calculations even though actual occupation is part-time. Reason is for conservative approach.

(c) The READ vegetable garden located in the NNE sector is located at the 020 azimuth degree. There is also a full time residence at this location.

(d) The KOONZE vegetable garden is located in the E sector and located at the 098 azimuth degree. There is also a full time residence at this location.

(e) The MELLO garden is the commercial farm along the westward side of the site access road; however, it does not produce broadleaf vegetation. This farm extends from 4.8 km to 7.2 km (3 to 4.5 miles) from the plant.

1 0420DC.06.11 B-20

Table B-6 Diablo Canyon Power Plant 2005 Annual Report Lower Limits of Detection (LLD) Exceeded*

Sample Station No.

Date Collected 1311i*

None Exceeded Table Notation:

  • Table lists all samples for which the lower limits of detection did not meet the values on Table 3.
    • Results are reported in pCi/L for liquids; in pCi/n 3, for iodine cartridges; and pCi/kg, for fish and food crops.

W W-0420DC.06.11 B-21

Table B-7 Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05A00 Air Particulate, Iodine Cartridge MT1 115/2005 05A01 Air Particulate, Iodine Cartridge 5F1 1/5/2005 05A02 Air Particulate, Iodine Cartridge 7D1 1/5/2005 05A03 Air Particulate, Iodine Cartridge 8S1 115/2005 05A04 Air Particulate, Iodine Cartridge 8S2 1/5/2005 05A05 Air Particulate, Iodine Cartridge 0S2 1/5/2005 05A06 Air Particulate, Iodine Cartridge 1S1 1/5/2005 05A09 Air Particulate, Iodine Cartridge MT1 1/12/2005 05A10 Air Particulate, Iodine Cartridge 5F1 1/12/2005 05A1 Air Particulate, Iodine Cartridge 7D1 1/12/2005 05A12 Air Particulate, Iodine Cartridge 8S1 1/12/2005 05A13 Air Particulate, Iodine Cartridge 8S2 1/12/2005 05A14 Air Particulate, Iodine Cartridge 0S2 1/12/2005 05A15 Air Particulate, Iodine Cartridge ISI 1/12/2005 05A17 Vegetative Greens (Brocolli) 5F2 1/18/2005 05A18 Vegetative Greens (Bok choy) 7G1 1/18/2005 05A19 Vegetative Greens (weeds) 7C1 1/18/2005 05A20 Air Particulate, Iodine Cartridge MT1 1/19/2005 05A21 Air Particulate, Iodine Cartridge 5F1 1/1 9/2005 05A22 Air Particulate, Iodine Cartridge 7D1 1/19/2005 05A23 Air Particulate, Iodine Cartridge 8S1 1/19/2005 05A24 Air Particulate, Iodine Cartridge 8S2 1/19/2005 05A25 Air Particulate, Iodine Cartridge 0S2 1/19/2005 05A26 Air Particulate, Iodine Cartridge IS1 1/1912005 05A82 Surface Water (Seawater)

DCM 1/25/2005 05A83 Surface Water (Seawater) 7C2 1/25/2005 05A85 Air Particulate, Iodine Cartridge MT1 1/26/2005 05A86 Air Particulate, Iodine Cartridge 5F1 1/26/2005 05A87 Air Particulate, Iodine Cartridge 7D1 1/2612005 05A88 Air Particulate, Iodine Cartridge 8S1 1/26/2005 05A89 Air Particulate, Iodine Cartridge 8S2 1/26/2005 05A90 Air Particulate, Iodine Cartridge 0S2 1/26/2005 05A91 Air Particulate, Iodine Cartridge ISI 1/26/2005 05A94 Surface Water (Outfall)

OUT 1/3112005 05A95 Drinking Water 5S2 1/31/2005 05A96 Drinking Water DWI 1/31/2005 05A97 Milk 5F2 1/31/2005 05A99 Air Particulate, Iodine Cartridge MT1 21212005 05B00 Air Particulate, Iodine Cartridge 5F1 2/2/2005 05BOI Air Particulate, Iodine Cartridge 7D1 2/2/2005 05B02 Air Particulate, Iodine Cartridge 8S1 2/2/2005 05803 Air Particulate, Iodine Cartridge 8S2 2/2/2005 05B04 Air Particulate, Iodine Cartridge 0S2 2/2/2005 f

!42 0DC.06.1 1 B-22

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05B05 Air Particulate, Iodine Cartridge iSI 2/2/2005 05B06 Vegetative Greens (Broccoli) 5F2 211/2005 05B07 Vegetative Greens (Cabbage) 7G1 211/2005 05B08 Vegetative Greens (Weeds) 7C1 211/2005 05B12 Air Particulate, Iodine Cartridge MT1 2/9/2005 05B13 Air Particulate, Iodine Cartridge 5F1 2/9/2005 05B14 Air Particulate, Iodine Cartridge 7D1 2/9/2005 05B15 Air Particulate, Iodine Cartridge 8S1 2/9/2005 05B16 Air Particulate, Iodine Cartridge 8S2 2/9/2005 05B17 Air Particulate, Iodine Cartridge 0S2 2/9/2005 05B18 Air Particulate, Iodine Cartridge 1S1 2/9/2005 05B19 Market Fish (Rock Cod) 7D3 2/1/2005 05B20 California Mussels 7C2 218/2005 05B21 Iridaea 7C2 2/8/2005 05B22 California Mussels PON 2/8/2005 05B38 Drinking Water DW1 2/10/2005 05B39 Surface Water, (Seawater)

DCM 2/10/2005 05B40 Surface Water, (Seawater) 7C2 2/10/2005 05B42 Drinking Water 5S2 2/10/2005 05B46 California Mussels DCM 2/9/2005 05B47 lridaea DCM 2/9/2005 05B48 California Mussels POS 2/9/2005 05B49 Bull Kelp Blade PON 2/10/2005 05B50 Bull Kelp Pneurnatocyst PON 2/10/2005 05B51 Giant Kelp Blade DCM 2/10/2005 05B52 Giant Kelp Pneumatocyst DCM 2/10/2005 05B53 Bull Kelp Blade POS 2/10/2005 05B54 Bull Kelp Pneumatocyst POS 2/10/2005 05B55 Bull Kelp Blade 7C2 2/10/2005 05B56 Bull Kelp Pneurnatocyst 7C2 2/10/2005 05B59 Milk 5F2 2/16/2005 05B62 Air Particulate, Iodine Cartridge MT1 2/16/2005 05B63 Air Particulate, Iodine Cartridge 5F1 2/16/2005 05B64 Air Particulate, Iodine Cartridge 7D1 2/16/2005 05B65 Air Particulate, Iodine Cartridge 8S1 2/16/2005 05B66 Air Particulate, Iodine Cartridge 8S2 2/16/2005 05B67 Air Particulate, Iodine Cartridge 0S2 2/16/2005 05B68 Air Particulate, Iodine Cartridge ISI 2/16/2005 05B78 Air Particulate, Iodine Cartridge MT1 2/23/2005 05B79 Air Particulate, Iodine Cartridge 5F1 2/23/2005 05B80 Air Particulate, Iodine Cartridge 7D1 2/23/2005 05B81 Air Particulate, Iodine Cartridge 8S1 2/23/2005 05B82 Air Particulate, Iodine Cartridge 8S2 2/23/2005 I

-0420DC.06.11 B-23

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05B83 Air Particulate, Iodine Cartridge 0S2 2/23/2005 05B84 Air Particulate, Iodine Cartridge ISI 2/2312005 05B87 Surface Water (Outfall)

OUT 3/112005 05B88 Vegetative Greens (Weeds) 5F2 3/1/2005 05B89 Vegetative Greens (Cabbage) 7G1 3/1/2005 05B90 Vegetative Greens (Peas and weeds) 7C1 3/1/2005 05B91 Air Particulate, Iodine Cartridge MT1 3/2/2005 05B92 Air Particulate, Iodine Cartridge 5F1 3/2/2005 05B93 Air Particulate, Iodine Cartridge 7D1 3/2/2005 05B94 Air Particulate, Iodine Cartridge 8S1 3/2/2005 05B95 Air Particulate, Iodine Cartridge 8S2 3/2/2005 05B96 Air Particulate, Iodine Cartridge 0S2 3/2/2005 05B97 Air Particulate, Iodine Cartridge IS1 3/2/2005 05C03 Air Particulate, Iodine Cartridge MT1 3/9/2005 05C04 Air Particulate, Iodine Cartridge 5F1 3/9/2005 05CO5 Air Particulate, Iodine Cartridge 7D1 3/9/2005 05C06 Air Particulate, Iodine Cartridge 8S1 3/9/2005 05C07 Air Particulate, Iodine Cartridge 8S2 3/912005 05CO8 Air Particulate, Iodine Cartridge 0S2 3/9/2005 05C09 Air Particulate, Iodine Cartridge ISI 3/9/2005 05C13 Air Particulate, Iodine Cartridge MT1 3/16/2005 05C14 Air Particulate, Iodine Cartridge 5F1 3/16/2005 05C15 Air Particulate, Iodine Cartridge 7D1 3/16/2005 05C16 Air Particulate, Iodine Cartridge 8S1 3/16/2005 05C17 Air Particulate, Iodine Cartridge 8S2 3116/2005 05C18 Air Particulate, Iodine Cartridge 0S2 3/16/2005 05C19 Air Particulate, Iodine Cartridge 1S1 3/16/2005 05C20 Perch PON 2/3/2005 05C21 Rockfish PON 2/3/2005 05C22 Perch DCM 213/2005 05C23 Rockfish DCM 2/3/2005 05C24 Perch POS 2/14/2005 05C25 Rockfish POS 2114/2005 05C32 Surface Water (Seawater)

DCM 3/17/2005 05C33 Surface Water (Seawater) 7C2 3/17/2005 05C35 Air Particulate, Iodine Cartridge MT1 3/23/2005 05C36 Air Particulate, Iodine Cartridge 5F1 3/23/2005 05C37 Air Particulate, Iodine Cartridge 7D1 3/23/2005 05C38 Air Particulate, Iodine Cartridge 8S1 3123/2005 05C39 Air Particulate, Iodine Cartridge 8S2 3/23/2005 05C40 Air Particulate, Iodine Cartridge 0S2 3/23/2005 05C41 Air Particulate, Iodine Cartridge IS1 3/23/2005 05C46 Perch 7C2 3/25/2005 420DC.06.1I B-24

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05C47 Rockfish 7C2 3/25/2005 05C48 Surface Water (Outfall)

OUT 3/29/2005 05C49 Drinking Water 5S2 3/29/2005 05C50 Drinking Water DW1 3/29/2005 05C51 Milk 5F2 3/29/2005 05C53 Air Particulate, Iodine Cartridge MT1 3/30/2005 05C54 Air Particulate, Iodine Cartridge 5F1 3/30/2005 05C55 Air Particulate, Iodine Cartridge 7D1 3/30/2005 05C56 Air Particulate, Iodine Cartridge 8S1 3/30/2005 05C57 Air Particulate, Iodine Cartridge 8S2 3/30/2005 05C58 Air Particulate, Iodine Cartridge 0S2 3/30/2005 05C59 Air Particulate, Iodine Cartridge 181 3/30/2005 05C61 Vegetative Greens (Weeds) 6C1 4/4/2005 05C62 Vegetative Greens (Cauliflower) 5F2 4/5/2005 05C63 Vegetative Greens (Cabbage) 7G1 4/4/2005 05C69 Vegetative Greens (peas and leaves) 7C1 4/6/2005 05C71 Air Particulate, Iodine Cartridge MT1 4/6/2005 05C72 Air Particulate, Iodine Cartridge 5F1 4/6/2005 05C73 Air Particulate, Iodine Cartridge 7D1 4/6/2005 05C74 Air Particulate, Iodine Cartridge 8S1 4/6/2005 05C75 Air Particulate, Iodine Cartridge 8S2 4/6/2005 05C76 Air Particulate, Iodine Cartridge 0S2 4/6/2005 05C77 Air Particulate, Iodine Cartridge ISI 4/6/2005 05C79 Air Particulate, Iodine Cartridge MT1 4/13/2005 05C80 Air Particulate, Iodine Cartridge 5F1 4/13/2005 05C81 Air Particulate, Iodine Cartridge 7D1 4/13/2005 05C82 Air Particulate, Iodine Cartridge 8S1 4/13/2005 05C83 Air Particulate, Iodine Cartridge 8S2 4/13/2005 05C84 Air Particulate, Iodine Cartridge 0S2 4/13/2005 05C85 Air Particulate, Iodine Cartridge 181 4/13/2005 05C88 Air Particulate, Iodine Cartridge MT1 4/20/2005 05C89 Air Particulate, Iodine Cartridge 5F1 4/20/2005 05C90 Air Particulate, Iodine Cartridge 7D1 4/20/2005 05C91 Air Particulate, Iodine Cartridge 8S1 4/20/2005 05C92 Air Particulate, Iodine Cartridge 8S2 4/20/2005 05C93 Air Particulate, Iodine Cartridge 0S2 4/20/2005 05C94 Air Particulate, Iodine Cartridge 1S1 4/20/2005 05D09 Surface Water (Seawater)

DCM 4/25/2005 05D10 Surface Water (Seawater) 7C2 4/25/2005 05D15 Air Particulate, Iodine Cartridge MT1 4/27/2005 05D16 Air Particulate, Iodine Cartridge 5F1 4/27/2005 05D17 Air Particulate, Iodine Cartridge 7D1 4/27/2005 05D1 8 Air Particulate, Iodine Cartridge 8S1 4/27/2005 420DC.06.11 B-25

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05D19 Air Particulate, Iodine Cartridge 8S2 4/27/2005 05D20 Air Particulate, Iodine Cartridge 0S2 4/27/2005 05D21 Air Particulate, Iodine Cartridge ISI 4/27/2005 05D22 Surface Water (Outfall)

OUT 4/26/2005 05D23 Drinking Water 5S2 4/26/2005 05D24 Drinking Water DW1 4/26/2005 05D25 Milk 5F2 4/27/2005 05D26 Bull Kelp Blade PON 4/25/2005 05D27 Bull Kelp Pneumatocyst PON 4/25/2005 05D28 Giant Kelp Blade DCM 4/25/2005 05D29 Giant Kelp Pneumatocyst DCM 4/25/2005 05D30 Bull Kelp Blade POS 4/25/2005 05D31 Bull Kelp Pneumatocyst POS 4/25/2005 05D32 Bull Kelp Blade 7C2 4/25/2005 05D33 Bull Kelp Pneumatocyst 7C2 4/25/2005 05D49 Market Fish (Salmon) 2F1 5/4/2005 05D50 Supplemental sample Well 02 (2nd Qtr '05) 5/4/2005 05D51 Air Particulate, Iodine Cartridge MT1 5/4/2005 05D52 Air Particulate, Iodine Cartridge 5F1 5/4/2005 05D53 Air Particulate, Iodine Cartridge 7D1 5/4/2005 05D54 Air Particulate, Iodine Cartridge 8S1 5/4/2005 05D55 Air Particulate, Iodine Cartridge 8S2 5/4/2005 05D56 Air Particulate, Iodine Cartridge 0S2 5/4/2005 05D57 Air Particulate, Iodine Cartridge 181 5/4/2005 05D62 Air Particulate, Iodine Cartridge MT1 5/11/2005 05D63 Air Particulate, Iodine Cartridge 5F1 5/11/2005 05D64 Air Particulate, Iodine Cartridge 7D1 5/11/2005 05D65 Air Particulate, Iodine Cartridge 8S1 5/11/2005 05D66 Air Particulate, Iodine Cartridge 8S2 5/11/2005 05D67 Air Particulate, Iodine Cartridge 0S2 5/11/2005 05D68 Air Particulate, Iodine Cartridge 1S1 5/11/2005 05D69 Vegetative Greens (lettuce) 5F2 5/11/2005 05D70 Vegetative Greens (snow peas and vines) 7C1 5/11/2005 05D72 Vegetative Greens (Weeds) 7G1 5/17/2005 05D73 Air Particulate, Iodine Cartridge MT1 5/18/2005 05D74 Air Particulate, Iodine Cartridge 5F1 5/18/2005 05D75 Air Particulate, Iodine Cartridge 7D1 5/18/2005 05D76 Air Particulate, Iodine Cartridge 8S1 5/18/2005 05D77 Air Particulate, Iodine Cartridge 8S2 5/18/2005 05D78 Air Particulate, Iodine Cartridge 0S2 5/18/2005 05D79 Air Particulate, Iodine Cartridge 181 5/18/2005 05D81 Surface Water (Seawater)

DCM 5/19/2005 05D82 Surface Water (Seawater) 7C2 5/19/2005 1

=42OD40D6..11 B-26

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05D89 Air Particulate, Iodine Cartridge MT1 5/25/2005 05D90 Air Particulate, Iodine Cartridge 5F1 5/25/2005 05D91 Air Particulate, Iodine Cartridge 7D1 5/25/2005 05D92 Air Particulate, Iodine Cartridge 8S1 5/25/2005 05D93 Air Particulate, Iodine Cartridge 8S2 5/25/2005 05D94 Air Particulate, Iodine Cartridge 0S2 5/25/2005 05D95 Air Particulate, Iodine Cartridge 1S1 5/25/2005 05EO1 California Mussels DCM 5/26/2005 05E02 Iridaea DCM 5/26/2005 05E03 California Mussels 7C2 5/25/2005 05E04 Iridaea 7C2 5/25/2005 05EO5 California Mussels POS 5/26/2005 05E06 Beef (Blanchard's ranch) 5/25/2005 05E08 Rockfish PON 5/26/2005 05E09 Perch DCM 5/26/2005 05E10 Rockfish DCM 5/26/2005 05E11 Perch POS 5/27/2005 05E12 Rockfish POS 5/27/2005 05E13 Drinking Water DWI 5/31/2005 05E14 Milk SF2 5/31/2005 05E15 Surface Water (Outfall)

OUT 5/31/2005 05E18 Air Particulate, Iodine Cartridge MT1 6/1/2005 05E19 Air Particulate, Iodine Cartridge 5F1 6/1/2005 05E20 Air Particulate, Iodine Cartridge 7D1 6/1/2005 05E21 Air Particulate, Iodine Cartridge 8S1 6/1/2005 05E22 Air Particulate, Iodine Cartridge 8S2 6/1/2005 05E23 Air Particulate, Iodine Cartridge 0S2 6/1/2005 05E24 Air Particulate, Iodine Cartridge 1S1 6/1/2005 05E25 Perch 7C2 5/29/2005 05E26 Rockfish 7C2 5/29/2005 05E27 Sediment DCM 5/29/2005 05E28 Sediment 7C2 5/29/2005 05E29 Vegetative Greens (Cauliflower) 5F2 6/11/2005 05E30 Vegetative Greens (Weeds) 7G1 6/1/2005 05E31 Vegetative Greens (Weeds) 7C1 6/2/2005 05E32 Drinking Water 5S2 6/2/2005 05E55 Air Particulate, Iodine Cartridge MTI 6/8/2005 05E56 Air Particulate, Iodine Cartridge 5F1 6/8/2005 05E57 Air Particulate, Iodine Cartridge 7D1 6/8/2005 05E58 Air Particulate, Iodine Cartridge 8S1 6/8/2005 05E59 Air Particulate, Iodine Cartridge 8S2 6/8/2005 05E60 Air Particulate, Iodine Cartridge 0S2 6/8/2005 05E61 Air Particulate, Iodine Cartridge ISI 6/8/2005 KM5 420DC.06.11 B-27

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05E71 Air Particulate, Iodine Cartridge MT1 6/15/2005 05E72 Air Particulate, Iodine Cartridge 5F1 6/15/2005 05E73 Air Particulate, Iodine Cartridge 7D1 6/15/2005 05E74 Air Particulate, Iodine Cartridge 8S1 6/15/2005 05E75 Air Particulate, Iodine Cartridge 8S2 6/15/2005 05E76 Air Particulate, Iodine Cartridge 0S2 6/15/2005 05E77 Air Particulate, Iodine Cartridge 1 S1 6/15/2005 05E78 Drinking Water 5S2 6/15/2005 05E79 Drinking Water DW1 6/15/2005 05E80 Milk 5F2 6/15/2005 05E81 Vegetative Greens (Mixed Greens) 6C1 6/15/2005 05E87 Air Particulate, Iodine Cartridge MT1 6/22/2005 05E88 Air Particulate, Iodine Cartridge 5F1 6/22/2005 05E89 Air Particulate, Iodine Cartridge 7D1 6/22/2005 05E90 Air Particulate, Iodine Cartridge 8S1 6/22/2005 05E91 Air Particulate, Iodine Cartridge 8S2 6/22/2005 05E92 Air Particulate, Iodine Cartridge 0S2 6/22/2005 05E93 Air Particulate, Iodine Cartridge 1S1 6/22/2005 05E94 Perch (resample)

PON 6/16/2005 05E95 Rockfish (resample)

PON 6/16/2005 05E96 Surface Water (Outfall)

OUT 6/23/2005 05E98 Surface Water (Seawater)

DCM 6/27/2005 05E99 Surface Water (Seawater) 7C2 6/27/2005 05FOI Air Particulate, Iodine Cartridge MT1 6/29/2005 05F02 Air Particulate, Iodine Cartridge 5F1 6/29/2005 05F03 Air Particulate, Iodine Cartridge 7D1 6/29/2005 05F04 Air Particulate, Iodine Cartridge 8S1 6/29/2005 05FO5 Air Particulate, Iodine Cartridge 8S2 6/29/2005 05F06 Air Particulate, Iodine Cartridge 0S2 6/29/2005 05F07 Air Particulate, Iodine Cartridge 181 6/29/2005 05F42 Air Particulate, Iodine Cartridge MT1 7/6/2005 05F43 Air Particulate, Iodine Cartridge 5F1 7/6/2005 05F44 Air Particulate, Iodine Cartridge 7D1 7/6/2005 05F45 Air Particulate, Iodine Cartridge 8S1 7/6/2005 05F46 Air Particulate, Iodine Cartridge 8S2 7/6/2005 05F47 Air Particulate, Iodine Cartridge 0S2 7/6/2005 05F48 Air Particulate, Iodine Cartridge 181 7/6/2005 05F51 Air Particulate, Iodine Cartridge MT1 7/13/2005 05F52 Air Particulate, Iodine Cartridge 5F1 7/13/2005 05F53 Air Particulate, Iodine Cartridge 7D1 7/13/2005 05F54 Air Particulate, Iodine Cartridge 8S1 7/13/2005 05F55 Air Particulate, Iodine Cartridge 8S2 7/13/2005 05F56 Air Particulate, Iodine Cartridge 0S2 7/13/2005 I!9442 0DC.06.1I1 B-28

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05F57 Air Particulate, Iodine Cartridge I SI 7/13/2005 05F63 Air Particulate, Iodine Cartridge MTI 7/20/2005 05F64 Air Particulate, Iodine Cartridge 5F1 7/20/2005 05F65 Air Particulate, Iodine Cartridge 7D1 7/20/2005 05F66 Air Particulate, Iodine Cartridge 8S1 7/20/2005 05F67 Air Particulate, Iodine Cartridge 8S2 7/20/2005 05F68 Air Particulate, Iodine Cartridge 0S2 7/20/2005 05F69 Air Particulate, Iodine Cartridge ISI 7/20/2005 05F83 Air Particulate, Iodine Cartridge MTI 7127/2005 05F84 Air Particulate, Iodine Cartridge 5F1 7/27/2005 05F85 Air Particulate, Iodine Cartridge 7D1 7/27/2005 05F86 Air Particulate, Iodine Cartridge 8S1 7/27/2005 05F87 Air Particulate, Iodine Cartridge 8S2 7/27/2005 05F88 Air Particulate, Iodine Cartridge 0S2 7/27/2005 05F89 Air Particulate, Iodine Cartridge IS1 7/27/2005 05F90 Vegetative Greens (Broccolli) 5F2 7/25/2005 05F91 Vegetative Greens (Bok choy) 7G1 7/25/2005 05F92 Vegetative Greens (licorice) 7C1 7/25/2005 05F93 Market Fish (Halibut) 7D3 7/25/2005 05F95 Surface Water (Outfall)

OUT 7/2812005 05F96 Milk 5F2 7/28/2005 05F97 Surface Water (Seawater)

DCM 7128/2005 05F98 Surface Water (Seawater) 7C2 7/28/2005 05G02 Drinking Water DWI 7/29/2005 05G03 Drinking Water 5S2 7/29/2005 05GO5 Air Particulate, Iodine Cartridge MT1 8/3/2005 05GO6 Air Particulate, Iodine Cartridge 5F1 8/3/2005 05G07 Air Particulate, Iodine Cartridge 7D1 8/3/2005 05GO8 Air Particulate, Iodine Cartridge 8S1 8/312005 05G09 Air Particulate, Iodine Cartridge 8S2 8/3/2005 05G10 Air Particulate, Iodine Cartridge 0S2 8/312005 05G11 Air Particulate, Iodine Cartridge ISI 8/3/2005 05G12 Bull Kelp Blade PON 7128/2005 05G13 Bull Kelp Pneumatocyst PON 7/28/2005 05G14 Giant Kelp Blade DCM 7/28/2005 05G15 Giant Kelp Pneumatocyst DCM 7/28/2005 05G16 Bull Kelp Blade POS 7/28/2005 05G17 Bull Kelp Pneumatocyst POS 7/28/2005 05G18 Bull Kelp Blade 7C2 7/28/2005 05G19 Bull Kelp Pneumatocyst 7C2 7/28/2005 05G23 Califomia Mussels DCM 8/5/2005 05G24 Iridaea DCM 8/5/2005 05G25 California Mussels 7C2 8/5/2005 420DC.06.11 B-29

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05G26 Iridaea 702 8/512005 05G27 California Mussels POS 8/512005 05G28 Vegetative Greens (corn) 5F2 8/5/2005 05G29 Vegetative Greens (Bok choy) 7G1 8/5/2005 05G30 Vegetative Greens (snow peas and vines) 7C1 8/5/2005 05G31 Drinking Water 5S2 8/8/2005 05G32 Drinking Water DW1 8/8/2005 05G33 Milk 5F2 8/8/2005 05G34 Surface Water (Outfall)

OUT 8/8/2005 05G35 Air Particulate, Iodine Cartridge MT1 8/10/2005 05G36 Air Particulate, Iodine Cartridge 5F1 8/10/2005 05G37 Air Particulate, Iodine Cartridge 7D1 8/10/2005 05G38 Air Particulate, Iodine Cartridge 8S1 8/10/2005 05G39 Air Particulate, Iodine Cartridge 8S2 8/10/2005 05G40 Air Particulate, Iodine Cartridge 0S2 8/10/2005 05G41 Air Particulate, Iodine Cartridge ISI 8/10/2005 05G43 Air Particulate, Iodine Cartridge MT1 8/17/2005 05G44 Air Particulate, Iodine Cartridge 5F1 8/17/2005 05G45 Air Particulate, Iodine Cartridge 7D1 8/17/2005 05G46 Air Particulate, Iodine Cartridge 8S1 8/17/2005 05G47 Air Particulate, Iodine Cartridge 8S2 8/17/2005 05G48 Air Particulate, Iodine Cartridge 0S2 8/17/2005 05G49 Air Particulate, Iodine Cartridge 1S1 8/17/2005 05G62 Air Particulate, Iodine Cartridge MT1 8/24/2005 05G63 Air Particulate, Iodine Cartridge 5F1 8/24/2005 05G64 Air Particulate, Iodine Cartridge 7D1 8/24/2005 05G65 Air Particulate, Iodine Cartridge 8S1 8/24/2005 05G66 Air Particulate, Iodine Cartridge 8S2 8/24/2005 05G67 Air Particulate, Iodine Cartridge 0S2 8/24/2005 05G68 Air Particulate, Iodine Cartridge ISI 8/24/2005 05G69 Surface Water (Seawater)

DCM 8/25/2005 05G70 Surface Water (Seawater) 7C2 8/25/2005 05G73 Air Particulate, Iodine Cartridge MT1 8/31/2005 05G74 Air Particulate, Iodine Cartridge 5F1 8/31/2005 05G75 Air Particulate, Iodine Cartridge 7D1 8/31/2005 05G76 Air Particulate, Iodine Cartridge 8S1 8/31/2005 05G77 Air Particulate, Iodine Cartridge 8S2 8/31/2005 05G78 Air Particulate, Iodine Cartridge 0S2 8/31/2005 05G79 Air Particulate, Iodine Cartridge 1S1 8/31/2005 05G80 Surface Water (Seawater)

DCM 8/31/2005 05G82 Air Particulate, Iodine Cartridge MT1 9/7/2005 05G83 Air Particulate, Iodine Cartridge 5F1 917/2005 05G84 Air Particulate, Iodine Cartridge 7D1 9/712005 Bt3 t 420DC.06. 11 B-30

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05G85 05G86 05G87 05G88 051H1 05H12 05H13 05H14 051H15 05H16 05H17 05H18 05H19 05H20 05H21 05H22 05H23 05H24 05H25 05H26 05H27 05H28 05H3C 05H31 05H32 05H33 05H37 05H38 05H39 05H40 05H41 05H42 05H43 05H44 05H67 05H68 05H69 05H70 05H71 05H72 05H73 05H74 05H75 Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Air Particulate, Iodine Cartridge Perch Rockfish Perch Rockfish Perch Rockfish Perch Rockfish Vegetative Greens (Tomato)

Vegetative Greens (Celery)

Vegetative Greens (weeds)

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

Drinking Water Drinking Water Milk Vegetative Greens (Weeds)

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

Surface Water (Seawater) 8S1 8S2 0S2 1S1 PON PON DCM DCM POS POS 7C2 7C2 5F2 7G1 7C1 MT1 5F1 7D1 8S1 8S2 0S2 1S1 OUT 5S2 DW1 5F2 6C1 MT1 5F1 7D1 8S1 8S2 0S2 S11 MT1 5F1 7D1 8S1 8S2 0S2 181 DCM 7C2 917/2005 917/2005 9/7/2005 9/7/2005 9/2/2005 9/2/2005 9/2/2005 9/2/2005 9/1/2005 9/11/2005 91112005 9/1/2005 9/14/2005 9/14/2005 9/1412005 9/14/2005 9/14/2005 9/14/2005 9/14/2005 9/14/2005 9114/2005 9/14/2005 9/15/2005 9/15/2005 9/15/2005 9/15/2005 9/18/2005 9/21/2005 9/21/2005 9121/2005 9121/2005 9/21/2005 9/21/2005 9/21/2005 9/28/2005 9/28/2005 9/28/2005 9/28/2005 9/28/2005 9/28/2005 9/28/2005 9/28/2005 9/28/2005 RX-4 42DC.06. 11B-B-31

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05H85 Air Particulate, Iodine Cartridge MT1 10/5/2005 05H86 Air Particulate, Iodine Cartridge 5F1 10/5/2005 05H87 Air Particulate, Iodine Cartridge 7D1 10/5/2005 05H88 Air Particulate, Iodine Cartridge 8S1 10/5/2005 05H89 Air Particulate, Iodine Cartridge 8S2 10/5/2005 05H90 Air Particulate, Iodine Cartridge 0S2 10/5/2005 05H91 Air Particulate, Iodine Cartridge ISI 10/5/2005 05H98 Air Particulate, Iodine Cartridge MT1 10/12/2005 05H99 Air Particulate, Iodine Cartridge 5F1 10/12/2005 05100 Air Particulate, Iodine Cartridge 7D1 10/12/2005 05101 Air Particulate, Iodine Cartridge 8S1 10/12/2005 05102 Air Particulate, Iodine Cartridge 8S2 10/12/2005 05103 Air Particulate, Iodine Cartridge 0S2 10/12/2005 05104 Air Particulate, Iodine Cartridge 1S1 10/12/2005 05105 Vegetative Greens (Tomatoes) 5F2 10/12/2005 05106 Vegetative Greens (Cabbage) 7G1 10/12/2005 05107 Vegetative Greens (Squash) 7C1 10/12/2005 05110 Air Particulate, Iodine Cartridge MTI 10/19/2005 05111 Air Particulate, Iodine Cartridge 5F1 10/19/2005 05112 Air Particulate, Iodine Cartridge 7D1 10/19/2005 05113 Air Particulate, Iodine Cartridge 8S1 10/19/2005 05114 Air Particulate, Iodine Cartridge 8S2 10/19/2005 05115 Air Particulate, Iodine Cartridge 0S2 10/19/2005 05116 Air Particulate, Iodine Cartridge 1S1 10/19/2005 05119 Surface Water (Outfall)

OUT 10/24/2005 05120 Drinking Water 5S2 10/24/2005 05121 Drinking Water DWI 10/24/2005 05122 Milk 5F2 10/24/2005 05124 Air Particulate, Iodine Cartridge MTI 10/26/2005 05125 Air Particulate, Iodine Cartridge 5F1 10/26/2005 05126 Air Particulate, Iodine Cartridge 7D1 10/26/2005 05127 Air Particulate, Iodine Cartridge 8S1 10/26/2005 05128 Air Particulate, Iodine Cartridge 8S2 10/26/2005 05129 Air Particulate, Iodine Cartridge 0S2 10/26/2005 05130 Air Particulate, Iodine Cartridge ISI 10/26/2005 05139 Surface Water (Seawater)

DCM 10/28/2005 05140 Surface Water (Seawater) 7C2 10/28/2005 05142 Air Particulate, Iodine Cartridge MTI 11/2/2005 05143 Air Particulate, Iodine Cartridge 5F1 11/2/2005 05144 Air Particulate, Iodine Cartridge 7D1 11/2005 05145 Air Particulate, Iodine Cartridge 8S1 11/2/2005 05146 Air Particulate, Iodine Cartridge 8S2 11/2/2005 05147 Air Particulate, Iodine Cartridge 0S2 11/212005 OT42O DC.06.1 1 B-32

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05148 Air Particulate, Iodine Cartridge 1S1 11/2/2005 05153 Vegetative Greens (Mixed Greens) 5F2 11/7/2005 05154 Vegetative Greens (Cabbage) 7G1 11/712005 05155 Vegetative Greens (Peas) 7C1 1117/2005 05156 Drinking Water 5S2 11/7/2005 05157 Drinking Water DWI 11/712005 05158 Milk 5F2 1117/2005 05159 Surface Water (Outfall)

OUT 11/7/2005 05160 Air Particulate, Iodine Cartridge MTI 11/9/2005 05161 Air Particulate, Iodine Cartridge 5F1 11/9/2005 05162 Air Particulate, Iodine Cartridge 7D1 11/9/2005 05163 Air Particulate, Iodine Cartridge 8S1 11/9/2005 05164 Air Particulate, Iodine Cartridge 8S2 11/912005 05165 Air Particulate, Iodine Cartridge 0S2 11/9/2005 05166 Air Particulate, Iodine Cartridge ISI 11/9/2005 05182 Air Particulate, Iodine Cartridge MT1 11/16/2005 05183 Air Particulate, Iodine Cartridge 5F1 11/1612005 05184 Air Particulate, Iodine Cartridge 7D1 11/16/2005 05185 Air Particulate, Iodine Cartridge 8S1 11/16/2005 05186 Air Particulate, Iodine Cartridge 8S2 11/16/2005 05187 Air Particulate, Iodine Cartridge 0S2 11/16/2005 05188 Air Particulate, Iodine Cartridge IS1 11/16/2005 05190 Surface Water (Seawater)

DCM 11/18J2005 05191 Surface Water (Seawater) 7C2 11/1 8/2005 05192 Bull Kelp Blade PON 11/18/2005 05193 Bull Kelp Pneumatocyst PON 11/18/2005 05194 Giant Kelp Blade DCM 11/18/2005 05195 Giant Kelp Pneumatocyst DCM 11/1812005 05196 Bull Kelp Blade POS 11/18/2005 05197 Bull Kelp Pneumatocyst POS 11/1812005 05198 Bull Kelp Blade 7C2 11/1812005 05199 Bull Kelp Pneumatocyst 7C2 11/18/2005 05J22 Air Particulate, Iodine Cartridge MTI 11/23/2005 05J23 Air Particulate, Iodine Cartridge 5F1 1112312005 05J24 Air Particulate, Iodine Cartridge 7D1 11/23/2005 05J25 Air Particulate, Iodine Cartridge 8S1 11/23/2005 05J26 Air Particulate, Iodine Cartridge 8S2 11/23/2005 05J27 Air Particulate, Iodine Cartridge 0S2 11/23/2005 05J28 Air Particulate, Iodine Cartridge 181 11/2312005 05J46 Perch PON 1112112005 05J47 Rockfish PON 11/21/2005 05J48 Perch DCM 11123/2005 05J49 Rockfish DCM 11123/2005 242 0DC.06. 11 B-33

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05J50 Perch POS 11/21/2005 05J51 Rockfish POS 11/21/2005 05J52 Perch 7C2 11/21/2005 05J53 Rockfish 7C2 11/21/2005 05J54 Market Fish 7D3 11/26/2005 05J55 California Mussels DCM 11/29/2005 05J56 Iridaea DCM 11/29/2005 05J57 California Mussels 7C2 11/30/2005 05J58 Iridaea 7C2 11/30/2005 05J59 California Mussels POS 11/29/2005 05J60 Pismo Beach Sand 11/30/2005 05J61 Montana De Oro Beach Sand 11/30/2005 05J62 Avila Beach Sand 11/30/2005 05J63 Cayucos Beach Sand 11/30/2005 05J64 Cambria Beach Sand 11/30/2005 05J65 Air Particulate, Iodine Cartridge MTI 11/30/2005 05J66 Air Particulate, Iodine Cartridge 5F1 11/3012005 05J67 Air Particulate, Iodine Cartridge 7D1 11130/2005 05J68 Air Particulate, Iodine Cartridge 8S1 11/3012005 05J69 Air Particulate, Iodine Cartridge 8S2 11/30/2005 05J70 Air Particulate, Iodine Cartridge 0S2 11/30/2005 05J71 Air Particulate, Iodine Cartridge 1S1 11/30/2005 05.181 Vegetative Greens (Mixed) 6C1 12/1/2005 05.182 Air Particulate, Iodine Cartridge MT1 12/7/2005 05J83 Air Particulate, Iodine Cartridge 5F1 12/7/2005 05.184 Air Particulate, Iodine Cartridge 7D1 12/7/2005 05J85 Air Particulate, Iodine Cartridge 8S1 12/7/2005 05J86 Air Particulate, Iodine Cartridge 8S2 12/7/2005 05J87 Air Particulate, Iodine Cartridge 0S2 12/7/2005 05J88 Air Particulate, Iodine Cartridge 181 12/7/2005 05J95 Vegetative Greens 5F2 12/8/2005 05.196 Vegetative Greens 7G1 12/8/2005 05.197 Vegetative Greens 7C1 12/8/2005 05J98 Drinking Water 5S2 12/8/2005 05J99 Drinking Water DWI 12/8/2005 05K00 Milk 5F2 1218/2005 05KOl Surface Water (Outfall)

OUT 12/8/2005 05K05 Surface Water (Seawater) 7C2 12/13/2005 05K06 Surface Water (Seawater)

DCM 12/13/2005 05K07 Air Particulate, Iodine Cartridge MT1 12114/2005 05K08 Air Particulate, Iodine Cartridge 5F1 12/14/2005 05K09 Air Particulate, Iodine Cartridge 7D1 12114/2005 05K10 Air Particulate, Iodine Cartridge 8S1 12/14/2005 I;2 420DC.06.11 B-34

Table B-7 (Continued)

Diablo Canyon Power Plant 2005 Annual Report List of Marine and Terrestrial Samples Collected and Analyzed Sample No.

Description Station No.

Collection Date 05K1 Air Particulate, Iodine Cartridge 8S2 12/14/2005 05K12 Air Particulate, Iodine Cartridge OS2 12114/2005 05K13 Air Particulate, Iodine Cartridge IS1 12/14/2005 05K17 Air Particulate, Iodine Cartridge MTI 12/21/2005 05KI8 Air Particulate, Iodine Cartridge 5F1 12/21/2005 05K19 Air Particulate, Iodine Cartridge 7D1 12/21/2005 05K20 Air Particulate, Iodine Cartridge 8S1 12/21/2005 05K21 Air Particulate, Iodine Cartridge 8S2 12/21/2005 05K22 Air Particulate, Iodine Cartridge OS2 12/21/2005 05K23 Air Particulate, Iodine Cartridge ISI 12/21/2005 05K28 Avila Beach Sand collected by 0. Sabi 12/21/2005 05K30 Air Particulate, Iodine Cartridge MT1 12/28/2005 05K31 Air Particulate, Iodine Cartridge 5F1 12/28/2005 05K32 Air Particulate, Iodine Cartridge 7D1 12/28/2005 05K33 Air Particulate, Iodine Cartridge 8S1 12/2B12005 05K34 Air Particulate, Iodine Cartridge 8S2 12/28/2005 05K35 Air Particulate, Iodine Cartridge OS2 12/28/2005 05K36 Air Particulate, Iodine Cartridge 1S1 12/28/2005 420DC.06 11 B-35