Text

2002 Annual Radiological Environmental Operating Report
	ML031270680
Person / Time
Site:	Millstone
Issue date:	04/30/2003
From:	Price J; Dominion Nuclear Connecticut
To:	; Document Control Desk, NRC/FSME
References
	B18888
	Download: ML031270680 (112)
	v • d • e

Dominion Nuclear Connecticut, Inc. ^D*n*

Millstone Power Station Dominion Rope Ferry Road Waterford, CT 06385 APR 3 0 20.13 Docket Nos. 50-245 50-336 50-423 B18888 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 Millstone Power Station, Unit Nos. 1, 2 and 3 2002 Annual Radiological Environmental Operating Report This letter transmits the Annual Radiological Environmental Operating Report for the Millstone Power Station, for the period January 1,2002, through December 31, 2002. This report satisfies the requirements of Section 5.7.2 of the Millstone Unit No. 1 Permanently Defueled Technical Specifications, and of Sections 6.9.1.6a and 6.9.1.3 of the Unit No. 2 and Unit No. 3 Technical Specifications, respectively.

There are no regulatory commitments contained within this submittal.

If you should have any questions concerning this submittal, please contact Mr. David W. Dodson at (860) 447-1791, extension 2346.

Very truly yours, DOMINION NUCLEAR CONNECTICUT, INC.

J. Al e Site President - Millstone Enclosure (1) cc: H. J. Miller, Region I Administrator D. G. Holland, NRC Project Manager, Millstone Unit No. 1 J. R. Wray, NRC Inspector, Region I, Millstone Unit No. 1 R. B. Ennis, NRC Senior Project Manager, Millstone Unit No. 2 V. Nerses, NRC Senior Project Manager, Millstone Unit No. 3 Millstone Senior Resident Inspector

Docket Nos . 50-245 50-336 50-423 B18888 Enclosure 1 Millstone Power Station, Unit Nos. 1, 2 and 3 Annual Radiological Environmental Operating Report Radiological Environmental Monitoring Program JanuarV 1, 2002 - December 31, 2002

Millstone Power Station Annual RadiologicalEnvironmentalOperatingReport January 1, 2002 - December 31, 2002 By Dominion Nuclear Connecticut, Inc.

Waterford, Connecticut Dominion-

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MILLSTONE POWER STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2002 MILLSTONE UNIT 1,DOCKET NO. 50-245 MILLSTONE UNIT 2, DOCKET NO. 50-336 MILLSTONE UNIT 3, DOCKET NO. 50-423 By the Dominion Nuclear Connecticut, Inc.

Waterford, Connecticut

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station

- TABLE OF CONTENTS -

1. EXECUTIVE

SUMMARY

1-1

2. PROGRAM DESCRIPTION 2-1 2.1. Sampling Schedule and Locations 2-1 2.2. Samples Collected During Report Period 2-7

3. RADIOCHEMICAL RESULTS 3-1 3.1. Summary Table 3-1 3.2. Data Tables 3-19

4. DISCUSSION OF RESULTS 4-1 4.1. Gamma Exposure Rate (Table 1) 4-1 4.2. Air Particulate Gross Beta Radioactivity (Table 2) 4-3 4.3. Airborne Iodine (Table 3) 4-3 4.4. Air Particulate Gamma (Table 4A-D) 4-5 4.5. Air Particulate Strontium (Table 5) 4-5 4.6. Soil (Table 6) 4-5 4.7. Cow Milk (Table 7) 4-6 4.8. Goat Milk (Table 8) 4-6 4.9. Pasture Grass and Feed (Table 9) 4-7 4.10. Well Water (Table 10) 4-7 4.11. Reservoir Water (Table 11) 4-7 4.12. Fruits and Vegetables (Table 12) 4-3 4.13. Broad Leaf Vegetation (Table 13) 4-3 4.14. Seawater (Table 14) 4-3 4.15. Bottom Sediment (Table 15) 4-3 4.16. Aquatic Flora (Table 16) 4-4 4.17. Fish (Tables 17A and 17B) 4-4 4.18. Mussels (Table 18) 4-4 4.19. Oysters (Table 19) 4-5 4.20. Clams (Table 20) 4-6 4.21. Scallops (Table 21) 4-6 4.22. Lobsters (Table 22) 4-6

5. OFFSITE DOSE EQUIVALENT COMMITMENTS 5-1

6. DISCUSSION 6-1 APPENDIX A - LAND USE CENSUS FOR 2002 A-1 APPENDIX B - DNC QA PROGRAM B-1 APPENDIX C -

SUMMARY

OF INTERLABORATORY COMPARISONS C-1

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Executive Summary

Dominion Nuclear Connecticut, Inc. Annual Radiological Envinrnmental Operating Report 2002 Millstone Station

1. EXECUTIVE

SUMMARY

The radiological environmental monitoring program for the Millstone Power Station was continued for the period January through December 2002, in compliance with the Technical Specifications and the Radiological Effluent Monitoring and Offsite Dose Calculation Manual.

The Nuclear Fuel Engineering group of Dominion Nuclear Connecticut, Inc. (DNC) prepared this annual report. Millstone staff performed sample collection and preparation. Framatome ANP DE&S Environmental Laboratory performed gamma exposure rate measurements and laboratory analyses.

Thermoluminescent dosimeters (TLDs) were used to measure direct gamma exposure in the vicinity of the station and as far away as 14 miles. Radiochemical and radiological counting analyses of samples were performed to detect the presence of any station related radioactivity.

Samples included air particulate and iodine filters, soil, goat milk, pasture grass, broad leaf vegetation, fruits, vegetables, sea water, bottom sediment, aquatic flora, fish, mussels, oysters, clams, and lobsters. In evaluating the results of these analyses it is necessary to consider the variability of natural and man-made sources of radioactivity, distribution in the environment and uptake in environmental media. This variability is dependent on many factors including station release rates, past spatial variability of radioactive fallout from nuclear weapons tests and on-going redistribution of the fallout, contribution from cosmically produced radioactivity, soil characteristics, farming practices, and feed type.

Significant variations in measured levels of radioactivity could be caused by any one of these factors. Therefore, these factors need to be considered in order to properly explain any variations in radiation detected and to distinguish between natural and nuclear station related radioactivity.

Millstone Unit 1 is permanently shutdown. The annual capacity factor for Millstone Unit 2 was 81.25% based on Design Electrical Rating (DER).

Unit 2 was shutdown in the first quarter for 2R14 refueling and maintenance. In august, Unit 2 was temporarily shutdown due to a leak in the charging system. The annual capacity factor for Unit 3 was 86.35%

based on Design Electrical Rating (DER). Unit 3 was shutdown in the third quarter for refueling (3R08) and restarted in October 2002. In December, Unit 3 was temporarily shutdown due to a ground fault in the Turbine Main Generator. The radioactive releases of gaseous effluents in 2002 were comparable to years when one or more units operated for the majority of the year. Radioactive releases in liquid effluents continue to be low.

1-1

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station No station effects were detected in terrestrial media. The predominant radioactivity, except for a few aquatic sample results, was that from outside sources, such as fallout from nuclear weapons tests and naturally occurring radionuclides. Monitoring of the aquatic environment in the area of the discharge indicated the presence of the following station related radionuclides: Cobalt-60, Cesium-137, Silver-lOim and Tritium. Due to the decreasing trend in liquid effluent releases, a corresponding decrease is observed in measured levels of radionuclides in the environment. Doses from the 2002 measured levels are well below those required by each Unit's Safety Technical Specifications (10CFR50 Appendix I, Design Guidelines).

Cesium-137 and Strontium-90 were measured in goat milk as a result of nuclear weapons testing in the 1960's and not the result of station operation. This can be concluded because insufficient quantities of these isotopes have been released by the station to account for the measured concentrations and the presence of these isotopes have been consistently declining since the early 1960's after signing of the Nuclear Test Ban Treaty.

The radiation dose (dose equivalent commitment) to the general public from the station's discharges has been evaluated by two methods. One method utilizes the measured station's discharges and conservative transport models and the other utilizes the measured concentrations of radioactivity in the environmental media. The maximum whole body dose (station boundary) that could occur to a member of the general public as a result of station operation was 0.08 millirem. This dose is 0.3 percent of the standard (i.e., 25 millirem to the whole body at the station site boundary) as set by the Environmental Protection Agency on the maximum allowable dose to an individual of the general public.

Historically, the average whole body dose for a member of the public residing within 50 miles of the station is generally three orders of magnitude less than the maximum individual whole body dose. The standards of the Environmental Protection Agency are a small fraction (less than 10 percent) of the 284 mrem per year normal Connecticut resident background radiation (NCRP94) and are designed to be inconsequential in regard to public health and safety. Station related doses are even a smaller fraction of the natural background. Therefore, the station related doses have insignificant public health consequences.

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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station

2. PROGRAM DESCRIPTION 2.1. Sampling Schedule and Locations The sample locations and the sample types and frequency of analysis are given in Tables 2-1 and 2-2 and Figures 2.1-1 and 2.1-2. The program as described here includes both required samples as specified in the Radiological Effluent Monitoring and Offsite Dose Calculation Manual and any extra samples.

2-1

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Table 2-1 Environmental Monitoring Program Sampling Types and Locations Location Direction & Distance Number* Location Name From Release Point** Sample Types 1-I On-site - Old Millstone Rd. 0.6 Mi, NNW TLD, Air Particulate, Iodine, Vegetation 2-I On-site - Weather Shack 0.3 Mi, S TLD, Air Particulate, Iodine 3-I On-site - Bird Sanctuary 0.3 Mi, NE TLD, Air Particulate, Iodine, Soil 4-I On-site - Albacore Drive 1.0 Mi, N TLD, Air Particulate, Iodine, Soil 5-I MP3 Discharge 0.1 Mi, SSE TLD 6-I Quarry Discharge 0.3 Mi, SSE TLD 7-I Environmental Lab Dock 0.3 Mi, SE TLD 8-I Environmental Lab 0.3 Mi, SE TLD 9-I Bay Point Beach 0.4 Mi, W TLD 10-I Pleasure Beach 1.2 Mi, E TLD, Air Particulate, Iodine, Vegetation 11-I New London Country Club 1.6 Mi, ENE TLD, Air Particulate, Iodine 12-C Fisher's Island, NY 8.7 Mi, ESE TLD 12-X Fisher's Island, NY 8.7 Mi, ESE Air Particulate 13-C Mystic, CT 11.5 Mi, ENE TLD 14-C Ledyard, CT 12.0 Mi, NE TLD, Soil 15-C Norwich, CT 14.0 Mi, N TLD, Air Particulate, Iodine 16-C Old Lyme, CT 8.8 Mi, W TLD 17-I Site Boundary 0.5 Mi, NE Vegetation 21-I Goat Location #1 2.0 Mi, N Milk 22-I Goat Location #2 5.2 Mi, NNE Milk 24-C Goat Location #4 29.0 Mi, NNW Milk 25-I Within 10 Miles Within 10 Miles Fruits & Vegetables 26-C Beyond 10 Miles Beyond 10 Miles Fruits & Vegetables 27-I Niantic 1.7 Mi, WNW TLD, Air Particulate, Iodine 28-I Two Tree Island 0.8 Mi, SSE Mussels 29-I West Jordan Cove 0.4 Mi, NNE Clams 30-I Niantic Shoals 1.5 Mi, NNW Mussels 31-I Niantic Shoals 1.8 Mi, NW Bottom Sediment, Oysters 31-X Niantic Shoals 1.8 Mi, NW Scallops 32-I Vicinity of Discharge Bottom Sediment, Oysters, Lobster, Fish, Seawater 32-X Vicinity of Discharge 1.8 Mi, E_E Fucus 33-I Seaside Point 1.8 Mi, ESE Bottom Sediment 33-X Seaside Point 1.8 Mi, ESE Fucus 34-I Thames River Yacht Club 4.0 Mi, ENE Bottom Sediment 34-X Thames River Yacht club 4.0 Mi, ENE Oysters

Key: I - Indicator C - Control X - Extra - sample not required by REMODCM

- The release points are the MP1 stack for terrestrial locations and the quarry cut for aquatic locations.

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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Location Direction & Distance Number* Location Name From Release Point** Sample Types 35-I Niantic Bay 0.3 Mi, WNW Lobster, Fish 35-X Niantic Bay 0.3 Mi, WNW Bottom Sediment, Seawater, Clams, Fucus 36-I Black Point 3.0 Mi, WSW Oysters 36-X Black Point 3.0 Mi, WSW Bottom Sediment, Fucus 37-C Giant's Neck 3.5 Mi, WSW Bottom Sediment, Oysters, Seawater 37-X Giant's Neck 3.5 Mi, WSW Lobster 38-I Waterford Shellfish Bed #1 1.0 Mi, NW Clams 39-X Jordon Cove Bar 0.8 Mi, NE Bottom Sediment, Clams, Seawater, Fucus 40-X Quarry Fish, Oysters 41-I Myrock Avenue 3.2 Mi, ENE TLD 42-I Billow Road 2.4 Mi, WSW TLD 43-I Black Point 2.6 Mi, SW TLD 44-I Onsite - Schoolhouse 0.1 Mi, NNE TLD 45-I Onsite Access Road 0.5 Mi, NNW TLD 46-I Old Lyme - Hillcrest Ave. 4.6 Mi, WSW TLD 47-I East Lyme - W. Main St. 4.5 Mi, W TLD 48-I East Lyme - Corey Rd. 3.4 Mi, WNW TLD 49-I East Lyme - Society Rd. 3.6 Mi, NW TLD 50-I East Lyme - Manwaring Rd. 2.1 Mi, W TLD 51-I East Lyme - Smith Ave. 1.5 Mi, NW TLD 52-I Waterford - River Rd. 1.1 Mi, NNW TLD 53-I Waterford - Gardiners Wood Rd. 1.4 Mi, NNE TLD 55-I Waterford - Magonk Point 1.8 Mi, ESE TLD 56-1 New London - Mott Ave. 3.7 Mi, E TLD 57-I New London - Ocean Ave. 3.6 Mi, ENE TLD 59-I Waterford -Miner Ave. 3.4 Mi, NNE TLD 60-I Waterford - Parkway South 4.0 Mi, N TLD 61-I Waterford - Boston Post Rd. 4.3 Mi, NNW TLD 62-I East Lyme - Columbus Ave. 1.9 Mi, WNW TLD 63-I Waterford - Jordon Cove Rd. 0.8 Mi, NE TLD 64-1 Waterford - Shore Rd. 1.1 Mi, ENE TLD 65-I Waterford - Bank St. 3.2 Mi, NE TLD 66-X NAP Parking Lot - Fitness Center 0.4 Mi, NW TLD 67-X Golden Spur 4.7 Mi, NNW Bottom Sediment

Key: I - Indicator C - Control X - Extra - sample not required

- The release points are the MP1 stack for terrestrial locations and the quarry cut for aquatic locations.

2-3

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Table 2-2 Sampling Frequency & Type of Analysis Exposure Pathway No. of Sampling & Collection Type of Analysis and/or Sample Locations Frequency

1. Gamma Dose - 40a Quarterly Gamma Dose - Quarterly Environmental TLD

2. Airborne Particulate 8 Continuous sampler - weekly Gross Beta - Weekly filter change Gamma Spectrum - Quarterly on composite (by location), and on individual sample if gross beta is greater than 10 times the mean of the weekly control station's gross beta results

3. Airborne Iodine 8 Continuous sampler - weekly 1-131 - Weekly canister change

4. Vegetation 5 One sample near middle and Gamma Isotopic on each sample one near end of growing season

5. Milk 3 Semimonthly when animals are Gamma Isotopic and 1-131 on each on pasture; monthly at other sample; Sr-89 and Sr-90 on times. quarterly composite 5a. Pasture Grass 4 Sample as necessary to Gamma Isotopic and 1-131 on each substitute for unavailable milk sample

6. Sea Water 2 Continuous sampler with a Gamma Isotopic and Tritium on monthly collection at indicator each sample.

location. Quarterly at control location - Composite of 6 weekly grab samples.

7. Bottom Sediment 5 Semiannual Gamma Isotopic on each sample 7a. Soil 3 Quarterly Gamma Isotopic on each sample

8. Fin Fish-Flounder 2 Quarterly Gamma Isotopic on each sample and one other type of edible fin fish

9. Mussels 2 Quarterly Gamma Isotopic on each sample (edible portion)

10. Oysters 4 Quarterly Gamma Isotopic on each sample (edible portion)

11. Clams 2 Quarterly Gamma Isotopic on each sample

_ (edible portion)

12. Lobster 2 Quarterly Gamma Isotopic on each sample (edible portion)

(a) I wo or more 1LLUs or 1LI) with two or more elements per location.

2-4

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Figure 2.1-1 Millstone Sampling Locations 2-5 cot

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Figure 2.1-2 Millstone SaMpling Locations (Within 2 miles) 2-6 C 07-

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station 2.2. Samples Collected During Report Period The following table summarizes the number of samples of each type collected and analyzed during 2002:

Number of Number of Technical Technical Sample Type Specification Specification Number of Required Samples Required Samples Extra Samples Analyzed Analyzed Gamma Exposure 160 160 4 (Environmental TLD)

Air Particulates 416 416 0 Air Iodine 416 416 0 Soil 12 12 0 Goat Milk 57 301,2 0 Pasture Grass Variable 2 27 0 Fruit and Vegetables 8 8 0 Broad Leaf Vegetation 6 6 12 Sea Water 16 16 8 Bottom Sediment 10 10 14 Aquatic Flora 0 0 16 Fish 16 16 4 Mussels 8 8 0 Oysters 16 16 8 Clams 8 8 8 Lobster 8 8 4 Total All Types 1,157 1,157 78

'Pasture grass sampled as necessary to substitute for unavailable milk.

2 Due to sample unavailability, less than required milk samples were collected 2-7

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station

3. RADIOCHEMICAL RESULTS 3.1. Summary Table In accordance with the Radiological Effluent Monitoring Manual (REMM),Section I.F. 1, a summary table of the radiochemical results has been prepared and is presented in Table 3-1.

In the determination of the mean, the data was handled as recommended by the Health and Safety Laboratory, Idaho and NUREG/CR-4007 (Sept. 1984): all valid data, including negative values and zeros were used in the determination of the mean (see Part 3.2).

A more detailed analysis of the data is given in Section 4.0 where a discussion of the variations in the data explains many aspects that are not evident in the Summary Table because of the basic limitation of data summaries. The data summaries include the extra XX' samples collected throughout the year. These samples are taken in an effort to enhance program monitoring effectiveness or are the results of special studies.

3-1

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Opemting Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCEETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C) 164, 20 GAMMA DOSE GAMMA DOSE 1.5 (E) 7.987 LOC # 08 11.815 7.914 0 (UR/HR) ( 4.79 - 12.09 ) 0.3 MILES SE ( 11.60 - 12.09 ) ( 5.72 - 9.82 BETA 363, 52 AIR GROSS BETA 0.01 (F) 0.0193 LOC # 11 0.0204 0.0202 0 PARTICULATE ( 0.002 - 0.033 ) 1.6 MILES ENE ( 0.010 - 0.032 ) ( 0.008 - 0.034 AND IODINE IODINE 363, 52 (PCI/M3) I-131 0.07 -0.0001 LOC # 15C 0.0029 0.0029 0

(-0.030 - 0.033) 14.0 MILES N (-0.017 - 0.032) (-0.017 - 0.032)

GAMMA 28, 4 BE-7 -- 0.1014 LOC # 04 0.1135 0.1035 0 0.044 - 0.188 ) 1.0 MILES N ( 0.094 - 0.169 ) ( 0.066 - 0.176 CO-60 -- -0.000063 LOC # 10 0.000293 0.000245 0

-0.00070 - 0.00070 ) 1.2 MILES E ( -0.00010 - 0.00062 ) ( 0.00000 - 0.00041 ZR-95 -- 0.00012 LOC # 15C 0,00248 0.00248 0

-0.0023 - 0.0031 ) 14.0 MILES N ( -0.0003 - 0.0057 ) ( -0.0003 - 0.0057 NB-95 -- -0.00100 LOC # 11 0.00150 -0.00083 0

-0.0090 - 0.0047 ) 1.6 MILES ENE ( 0.0002 - 0.0030 ) ( -0.0066 - 0.0034 RU-103 -- 0.00027 LOC # 15C 0.00078 0.00078 0

-0.0021 - 0.0036 ) 14.0 MILES N ( 0.0000 - 0.0013 ) ( 0.0000 - 0.0013 CS-134 0.05 (F) -0.000099 LOC # 11 0.000163 0.000003 0

-0.00120 - 0.00060 ) 1.6 MILES ENE ( -0.00039 - 0.00060 ) ( -0.00047 - 0.00071 CS-137 0.06 -0.000009 LOC # 11 0.000125 -0.000200 0

-0.00060 - 0.00092 ) 1.6 MILES ENE ( -0.00034 - 0.00092 ) ( -0.00085 - 0.00052 GAMMA 12, 0 SOIL K-40 10. 978 LOC # 14 12.080 0 (PCI/G DRY) ( 8.10 - 13.04 ) 12.0 MILES NE ( 11.40 - 13.04 )

N-54 -- 0.007 LOC # 14 0.019 -- 0

(-0.02 - 0.04 ) 12.0 MILES NE ( -0.01 - 0.04 )

CO-58 -- -0.012 LOC # 04 -0.010 -- 0

( -0.05 - 0.01 ) 1.0 MILES N ( -0.04 - 0.01 )

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Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

C0-60 -- 0.003 LOC # 04 0.005 -- 0

(-0.02 - 0.05) 1.0 MILES N (-0.01 - 0.01)

ZR-95 -- -0.0053 LOC # 03 0.0218 __ 0

-0.160 - 0.055 ) 0.3 MILES NE ( -0.010 - 0.055 NB-95 -- -0.0005 LOC # 14 0.0065 -- 0

(-0.035 - 0.049) 12.0 MILES NE (-0.014 - 0.026)

CS-134 0.15 0.0136 LOC # 03 0.0280 -- 0

(-0.034 - 0.079) 0.3 MILES NE (-0.027 - 0.079)

CS-137 0.18 0.882 LOC # 14 1.394 -- 0 (3.02 - 1.80) 12.0 MILES NE (0.96 - 1.80)

TH-228 -- 0.957 LOC # 14 1.255 -- 0 (0.42 - 1.34) 12.0 MILES NE (1.13 - 1.34)

SR 4, 3 GOAT MILK SR-89 -- 3.68 LOC # 22 7.50 -7.13 0 (PCI/L) (-5.0 - 8.6) 5.2 MILES NNE (6.4 - 8.6) (-15.6 - 0.3)

SR-90 -- 2.470 LOC # 24C 6.167 6.167 0

( 0.99 - 5.80) 29.0 MILES NNW (1.77 - 14.30) (1.77 - 14.30)

IODINE 18, 12 1-131 1 0.199 LOC # 24C 0.214 0.214 0

-0.15 - 0.68 ) 29.0 MILES NNW ( -0.06 - 0.80 ) ( -0.06 - 0.80 GAMMA 17, 11 CS-134 15 -0.37 LOC # 22 0.57 0.35 0

( -5.3 - 2.2) 5.2 MILES NNE (-0.9 - 2.2) (2.7 - 4.5)

CS-137 18 6.49 LOC # 22 9.05 4.72 0

( -0.6 - 17.3 ) 5.2 MILES NNE ( -0.6 - 17.3 ) ( -1.9 - 13.5 BA-140 70 0.38 LOC # 22 0.48 -0.49 0

( -2.8 - 4,6 5.2 MILES NNE (-2.7 - 4.6) (-4.1 - 2.4)

LA-140 25 0.43 LOC # 22 0.56 -0.60 0

( -3.2 - 5.3) 5.2 MILES NNE (-3.1 - 5.3) (-4.9 - 2.7) 3-3

Dominion Nuclear Connecticut, Inc. Annual Radiological Enviwnmoental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

GAMMA 20, 7 PASTURE GRASS 1-131 0.06 0.0079 LOC # 22 0.0100 0.0088 0 (PCI/G WET) ( -0.006 - 0.055 ) 5.2 MILES NNE ( -0.003 - 0.055 ) ( -0.002 - 0.034 CS-134 0.06 0.0137 LOC # 21 0.0138 0.0064 0

(-0.010 - 0.039) 2.0 MILES N (-0.010 - 0.031) (-0.017 - 0.024)

CS-137 0.08 0.0094 LOC # 24C 0.0182 0.0182 0

-0.029 - 0.072 ) 29.0 MILES NNW ( -0.001 - 0.036 ) ( -0.001 - 0.036 BA-140 -- -0.0135 LOC # 21 -0.0085 -0.0099 0

(-0.076 - 0.020) 2.0 MILES N (-0.057 - 0.020) (-0.062 - 0.015)

LA-140 -- -0.0158 LOC # 21 -0.0101 -0.0117 0

-0.090 - 0.020 ) 2.0 MILES N ( -0.066 - 0.020 ) ( -0.072 - 0.017 GAMMA 4, 4 FRUITS AND BE-7 0.0555 LOC # 25 0.0555 0.0130 0 VEGETABLES -0.004 - 0.107 ) WITHIN 10 MILES ( -0.004 - 0.107 ) ( -0.008 - 0.033 )

(PCI/G WET)

K-40 -- 2.1958 LOC # 25 2.1958 1.6863 0 1.199 - 4.060 ) WITHIN 10 MILES ( 1.199 - 4.060 ) ( 1.027 - 2.399 MN-54 -- -0.0015 LOC # 26C 0.0007 0.0007 0

-0.005 - 0.000 ) BEYOND 10 MILES ( -0.001 - 0.003 ) ( -0.001 - 0.003 )

CO-58 -- -0.0005 LOC # 26C -0.0004 -0.0004 0

-0.005 - 0.003 ) BEYOND 10 MILES ( -0.003 - 0.001 ) ( -0.003 - 0.001 )

CO-60 -- 0.0000 LOC # 26C 0.0008 0.0008 0

-0.001 - 0.002) BEYOND 10 MILES ( -0.001 - 0.002 ) ( -0.001 - 0.002 )

ZR-95 -- 0,0003 LOC # 26C 0.0014 0.0014 0

-0.003 - 0.003 ) BEYOND 10 MILES ( -0.002 - 0.004 ) ( -0.002 - 0.004 )

NB-95 -- -0.0016 LOC # 26C 0.0011 0.0011 0

(-0.004 - 0.001) BEYOND 10 MILES ( -0.003 - 0.005 ) ( -0.003 - 0.005 )

RU-103 -- -0.0003 LOC # 26C -0.0002 -0.0002 0

-0.004 - 0.003 ) BEYOND 10 MILES ( -0.004 - 0.003 ) ( -0.004 - 0.003 )

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Dominion Nuclear Connecticut, Inc. Annual Radiological Envimrnmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

I-131 0.06 (G) 0.0195 LOC # 25 0.0195 0.0075 0

(-0.002 - 0.038) WITHIN 10 MILES (-0.002 - 0.038) (-0.009 - 0.022)

SB-125 -- 0.0018 LOC # 25 0.0018 -0.0021 0

-0.003 - 0.010 ) WITHIN 10 MILES ( -0.003 - 0.010 ) ( -0.004 - 0.001 CS-134 0.06 0.0015 LOC # 25 0.0015 -0.0004 0 0.001 - 0.003 ) WITHIN 10 MILES ( 0.001 - 0.003 ) ( -0.003 - 0.002 CS-137 0.08 0.0003 LOC # 25 0.0003 -0.0010 0

-0.004 - 0.006 ) WITHIN 10 MILES ( -0.004 - 0.006 ) ( -0.002 - 0.000 TH-228 -- 0.0095 LOC # 25 0.0095 0.0025 0

-0.003 - 0.016 ) WITHIN 10 MILES ( -0.003 - 0.016 ) ( -0.008 - 0,011 GAMMA 18, 0 BROADLEAF BE-7 -- 0.584 LOC # 01 0.725 -- 0 VEC,ETATION ( 0.24 - 1.72 ) 0.6 MILES NNW ( 0.24 - 1.72 )

(PC I/G WET)

K-40 3. 658 LOC # 10 4.517

( 1.90 - 5.71 ) 1.2 MILES E ( 2.91 - 5.71 )

MN-54 -- 0.0014 LOC # 17 0.0020 -- 0

-0.012 - 0.021 ) 0.5 MILES NE ( -0.009 - 0.021 )

CO-58 -- -0.0001 LOC # 01 0.0025 -- 0

-0.012 - 0.015 ) 0.6 MILES NNW ( -0.008 - 0.008 )

Co-60 -- 0.0002 LOC # 17 0.0027 -- 0

-0.013 - 0.022 ) 0.5 MILES NE ( -0.008 - 0.022 )

ZR-95 -- -0.0013 LOC # 01 0.0025 -- 0

-0.019 - 0.027 ) 0.6 MILES NNW ( -0.007 - 0.027 )

NB-95 -- -0.0005 LOC # 01 0.0025 -- 0

( -0.019 - 0.013 ) 0.6 MILES NNW ( -0.006 - 0.013 )

RU-103 -- 0.0020 LOC # 10 0.0054 -- 0

(-0.014 - 0.017) 1.2 MILES E ( -0.001 - 0.013 )

3-5

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Repott 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C) 1-131 0.06 0.0130 LOC # 17 0.0202 -- 0

(-0.005 - 0.035) 0.5 MILES NE (0.005 - 0.035)

SB-125 -- 0.0117 LOC # 01 0.0170 -- 0

-0.014 - 0.058 ) 0.6 MILES NNW ( -0.013 - 0.058 CS-134 0.06 0.0056 LOC # 01 0.0123 -- 0

(-0.014 - 0.029) 0.6 MILES NNW (-0.002 - 0.029)

CS-137 0.08 0.0058 LOC # 17 0.0172 -- 0

(-0.019 - 0.067) 0.5 MILES NE (-0.003 - 0.067)

TH-228 -- 0.0444 LOC # 01 0.0970 -- 0

-0.031 - 0.150 ) 0.6 MILES NNW ( 0.040 - 0.150 TRITIUM 20, 4 SEAWATER H-3 2000 156.4 LOC # 32 449.2 -27.5 0 (PCI/L) -540 - 1030 ) VIC DISCHARGE ( -200 - 960 ) ( -490 - 290 GAMMA 20, 4 K-40 -- 305.0 LOC # 39x 321.5 282.3 0 (222 - 373) JORDAN COVE BAR (285 - 360) (269 - 308)

MN-54 15 0.19 LOC # 39X 0.58 0.20 0

(-3.3 - 1.1) JORDAN COVE BAR (0.0 - 1.0) (-1.0 - 1.9)

CO-58 15 0.16 LOC # 32 0.68 -0.55 0

(-1.9 - 2.1) VIC DISCHARGE (0.0 - 2.1) (-1.1 - 0.0)

FE-59 30 -0.05 LOC # 39X 1.08 -2.70 0

(-5.0 - 3.1) JORDAN COVE BAR (-1.1 - 1.9 ) (-7.2 - 0.1)

CO-60 15 0.36 LOC # 39X 0.78 0.23 0

(-1.9 - 2.7) JORDAN COVE BAR (0.0 - 1.7) (-0.2 - 0.7)

ZN-65 30 -0.92 LOC # 39X -0.05 -1.65 0

(-7.7 - 7.8) JORDAN COVE BAR (-2.4 - 3.5 ) (-3.7 - 3.7 )

ZR-95 30 -0.60 LOC # 32 0.24 -0.85 0

(-5.1 - 3.9) VIC DISCHARGE (-1.9 - 3.9 ) (-2.4 - 1.4 )

3-6

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

NB-95 15 0.19 LOC # 35X 1.20 0.10 0

(-2.1 - 3.1) 0.3 MILES WNW (-0.2 - 3.1) (-0.5 - 1.3 )

I-131 15 (H) -0.29 LOC # 39X 0.28 -0.68 0

(-5.7 - 4.0) JORDAN COVE BAR (-3.6 - 1.8) (-4.7 - 3.3 )

cS-134 15 0.19 LOC # 35X 0.55 0.15 0

(-1.7 - 1.6 0.3 MILES WNW (-1.1 - 1.6) (-0.7 - 1.4)

CS-137 18 -0.26 LOC # 37C 0.45 0.45 0

(-2.8 - 1.7) 3.5 MILES WSW (-0.1 - 0.8) (-0.1 - 0.8)

BA-140 60 (H) -0.78 LOC # 35X 0.70 0.60 0

(-7.6 - 4.3 0.3 MILES WNW (0.0 - 1.6) (-1.7 - 2.4)

LA-140 15 (H) -0.89 LOC # 35X 0.83 0.70 0

(-8.7 - 4.9) 0.3 MILES WNW (0.0 - 1.9) (-1.9 - 2.8)

GAMMA 22, 2 BOTTOM K-40 15.53 LOC # 33 20.85 14. 65 0 SEDIMENT ( 10.8 - 22.1 ) 1.8 MILES ESE ( 20.4 - 21.3 ) ( 14.2 - 15.1 )

(PCI/G DRY)

MN-54 -- 0.0073 LOC # 31 0.0205 -0.0025 0

(-0.028 - 0.053 1.8 MILES NW ( -0.001 - 0.042 ) ( -0.007 - 0.002 )

CO-58 -- -0.0026 LOC # 33 0.0145 -0.0075 0

-0.046 - 0.020 ) 1.8 MILES ESE ( 0.014 - 0.015 ) ( -0.013 - -0.002 Co-60 -- 0.0042 LOC # 32 0.0188 -0.0040 0

(-0.017 - 0.059 VIC DISCHARGE ( -0.005 - 0.059 ) ( -0.011 - 0.003 )

ZR-95 -- 0.0167 LOC # 36X 0.0445 0.0060 0

-0.052 - 0.099 ) 3.0 MILES WSW ( 0.024 - 0.065 ) ( 0.003 - 0.009 NB-95 -- -0.0057 LOC # 67X 0.0125 -0.0095 0

(-0.186 - 0.058) 4.5 MILES NNW ( 0.007 - 0.018 ) (-0.012 - -0.007) 1-131 -- 0.0124 LOC # 36X 0.2070 -0.0520 0

-0.290 - 0.410 ) 3.0 MILES WSW ( 0.004 - 0.410 ) ( -0.100 - 0.004 3-7

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

SB-125 -- 0.0098 LOC # 33 0.0450 -0.0175 0

( -0.080 - 0.100) 1.8 MILES ESE (-0.010 - 0.100) (-0.039 - 0.004)

CS-134 0.15 0.0025 LOC # 32 0.0215 0.0030 0

( -0.031 - 0.053 ) VIC DISCHARGE ( -0.003 - 0.053 ) ( 0.001 - 0.007 CS-137 0.18 0.0256 LOC # 67X 0.1505 -0.0115 0

( -0.042 - 0.218 ) 4.5 MILES NNW ( 0.083 - 0.218 ) ( -0.020 - -0.003 TH-228 -- 1.2020 LOC # 31 3.8200 0.4435 0

( -0.120 - 4.150 ) 1.8 MILES NW ( 3.490 - 4.150 ) ( 0.407 - 0.480 GAMMA 16, 0 AQUATIC FLORA BE-7 -- 0.0344 LOC # 35X 0.0608 -- 0 (FUCUS) ( -0.030 - 0.120) 0.3 MILES WNW (-0.013 - 0.101)

(PCI/G WET)

K-40 __ 5.779 LOC # 32X 6.768 0

( 4.61 - 7.87 ) VIC DISCHARGE ( 5.46 - 7.87 )

CR-51 -- -0.0079 LOC # 39X 0.0288 -- 0

-0.071 - 0.069 ) JORDAN COVE BAR ( -0.020 - -0.069 MN-54 -- -0.0011 LOC # 32X 0.0027 -- 0

-0.009 - 0.007 ) VIC DISCHARGE ( 0.000 - 0.007 CO-58 -- 0.00072 LOC # 32X 0.00728 -- 0

-0.0075 - 0.0111 ) VIC DISCHARGE ( -0.0010 - 0.0111 FE-59 -- 0.0037 LOC # 32X 0.0158 -- 0

-0.019 - 0.040 ) VIC DISCHARGE ( -0.003 - 0.040 CO-60 -- 0.00203 LOC # 33X 0.00380 -- 0

-0.0050 - 0.0100 ) 1.8 MILES ESE ( 0.0007 - 0.0069 ZN-65 -- -0.0061 LOC # 33X 0.0040 -- 0

-0.046 - 0.030 ) 1.8 MILES ESE ( -0.005 - 0.013 ZR-95 -- 0.0022 LOC # 32X 0.0080 -- 0

( -0.015 - 0.016 ) VIC DISCHARGE ( 0.000 - 0.016 3-8

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NBM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

NB-95 -- -0.0004 LOC # 32X 0.0028 -- 0

-0.015 - 0.012 ) VIC DISCHARGE ( -0.004 - 0.012 )

RU-103 -- -0.0009 LOC # 32X 0.0019 -- 0

-0.015 - 0.021 ) VIC DISCHARGE ( -0.015 - 0.021 )

RU-106 -- -0.0107 LOC # 39X 0.0025 -- 0

(-0.100 - 0.083) JORDAN COVE BAR (-0.050 - 0.069)

AG-ilOM -- -0.00055 LOC # 32X 0.00285 -- 0

-0.0110 - 0.0070 ) VIC DISCHARGE ( 0.0007 - 0.0050 1-131 -- 0.0358 LOC # 36X 0.1380 -- 0

-0.014 - 0.260 ) 3.0 MILES WSW ( 0.016 - 0.260 SB-125 -- 0.0011 LOC # 33X 0.0065 -- 0

-0.015 - 0.019 ) 1.8 MILES ESE ( 0.005 - 0.008 CS-134 -- 0.00286 LOC # 32X 0.00680 -- 0

-0.0050 - 0.0100 ) VIC DISCHARGE ( 0.0012 - 0.0100 CS-137 -- 0.00074 LOC # 35X 0.00400 -- 0

-0.0070 - 0.0100 ) 0.3 MILES WNW ( 0.0013 - 0.0100 TH-228 -- 0.0393 LOC # 32X 0.0453 -- 0 0.018 - 0.090 ) VIC DISCHARGE ( 0.016 - 0.066 GAMMA 20, 0 FISH BE-7 -- -0.010 LOC # 32 0.010 -- 0 (ALL TYPES) ( -0.19 - 0.16 ) VIC DISCHARGE ( -0.19 - 0.16 (PCI/G WET)

K-40 -- 3.625 LOC # 40X 3.890 -- 0 1.78 - 4.70 ) ONSITE QUARRY ( 3.27 - 4.53 CR-51 -- 0.006 LOC # 35 0.034 -- 0

(-0.17 - 0.17) 0.3 MILES WNW (-0.07 - 0.17)

MN-54 0.13 0.0005 LOC # 35 0.0021 -- 0

(-0.017 - 0.022) 0.3 MILES WNW (-0.006 - 0.022) 3-9

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

CO-58 0.13 -0.0018 LOC # 35 -0.0003 0

(-0.028 - 0.017 ) 0.3 MILES WNW (-0.010 - 0.013)

FE-59 0.26 -0.0052 LOC # 32 0.0109 -- 0

-0.069 - 0.071 ) VIC DISCHARGE ( -0.051 - 0.071 CO-60 0.13 0.0003 LOC # 35 0.0059 -- 0

-0.017 - 0.021 ) 0.3 MILES WNW ( -0.006 - 0.021 ZN-65 0.26 -0.0143 LOC # 40X -0.0108 -- 0

-0.058 - 0.035 ) ONSITE QUARRY ( -0.031 - 0.011 ZR-95 -- 0.0067 LOC # 32 0.0130 -- 0

-0.028 - 0.039 ) VIC DISCHARGE ( -0.019 - 0.039 NB-95 -- -0.0004 LOC # 40X 0.0033 -- 0

-0.027 - 0.015 ) ONSITE QUARRY ( -0.010 - 0.015 RU-103 -- -0.0057 LOC # 40X 0.0000 -- 0

-0.033 - 0.010 ) ONSITE QUARRY ( -0.006 - 0.006 RU-106 -- -0.013 LOC # 35 0.003 -- 0

(-0.19 - 0.16) 0.3 MILES WNW (-0.19 - 0.16)

AG-ilOM -- -0.0010 LOC # 40X 0.0030 -- 0

-0.022 - 0.019 ) ONSITE QUARRY ( -0.014 - 0.019 1-131 -- -0.0282 LOC # 40X -0.0048 -- 0

-0.500 - 0.200 ) ONSITE QUARRY ( -0.054 - 0.035 SB-125 -- 0.0078 LOC # 40X 0.0290 -- 0

-0.045 - 0.064 ) ONSITE QUARRY ( 0.000 - 0.064 CS-134 0.13 0.0013 LOC # 40X 0.0088 -- 0

-0.011 - 0.032 ) ONSITE QUARRY ( -0.005 - 0.032 3-10

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

CS-137 0.15 -0.0010 LOC # 35 0.0006 -- 0

( -0.022 - 0.014 ) 0.3 MILES WNW ( -0.022 - 0.014 )

TH-228 -- -0.0068 LOC # 35 0.0068 -- 0

( -0.064 - 0.053 ) 0.3 MILES WNW ( -0.034 - 0.053 )

GAMMA 8, 0 MUSSELS BE-7 __ 0.138 LOC # 35 0.053 0 (PCI/G WET) ( -0.14 - 0.14 ) 0.3 MILES WNW ( -0.05 - 0.14 )

K-40 -- 1.630 LOC # 35 1.770 0

( 1.25 - 1.95 ) 0.3 MILES WNW ( 1.56 - 1.95 )

CR-51 __ -0.003 LOC # 35 0.000 0

( -0.12 - 0.09 ) 0.3 MILES WNW ( -0.04 - 0.04 )

MN-54 0.13 -0.0113 LOC # 35 -0.0110 -- 0

-0.025 - 0.005 ) 0.3 MILES WNW ( -0.018 - -0.006 CO-58 0.13 -0.0029 LOC # 35 0.0035 -- 0

-0.024 - 0.009 ) 0.3 MILES WNW ( -0.002 - 0.009 FE-59 0.26 -0.0158 LOC # 35 0.0008 -- 0

-0.085 - 0.048 ) 0.3 MILES WNW ( -0.039 - 0.048 CO-60 0.13 0.0010 LOC # 35 0.0033 -- 0

-0.014 - 0.017 ) 0.3 MILES WNW ( -0.013 - 0.017 ZN-65 0.26 -0.023 LOC # 32 -0.013 -- 0

-0.07 - 0.05 ) VIC DISCHARGE (_-0.05 - 0.05 ZR-95 -- 0.0079 LOC # 32 0.0130 -- 0

-0.010 - 0.030 ) VIC DISCHARGE ( -0.003 - 0.030 NB-95 -- -0.0005 LOC # 32 0.0028 -- 0

-0.045 - 0.034 ) VIC DISCHARGE ( -0.045 - 0.034 RU-103 -- -0.0010 LOC # 35 -0.0008 -- 0

-0.010 - 0.011 ) 0.3 MILES WNW ( -0.010 - 0.011 3-11

Dominion Nuclear Connecticut, Inc. Annual Radiological Environnental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

RU-106 -- -0.033 LOC # 35 0.013 -- 0

(-0.15 - 0.14) 0.3 MILES WNW (-0.15 - 0.14)

AG-l1OM -- 0.0009 LOC # 32 0.0043 -- 0

-0.012 - 0.014 ) VIC DISCHARGE ( -0.004 - 0.014 1-131 -- 0.044 LOC # 32 0.063 -- 0

-0.14 - 0.22 ) VIC DISCHARGE ( -0.14 - 0.22 SB-125 -- 0.0063 LOC # 35 0.0108 -- 0

( -0.012 - 0.033 ) 0.3 MILES WNW ( -0.003 - 0,033 CS-134 0.13 -0.0049 LOC # 32 0.0003 -- 0

( -0.031 - 0.002 ) VIC DISCHARGE ( 0.000 - 0.001 CS-137 0.15 -0.0071 LOC # 32 -0.0055 -- 0

( -0.023 - 0.007 ) VIC DISCHARGE ( -0.009 - 0.004 TH-228 -- 0.0075 LOC # 32 0.0428 -- 0

( -0.043 - 0.083 ) VIC DISCHARGE ( 0.011 - 0.083 GAMMA 20, 4 OY' 5TERS BE-7 -- 0.016 LOC # 31 0.073 0.068 0 (P( I/G WET) (-0.11 - 0.30) 1.8 MILES NW (-0.06 - 0.30) (-0.04 - 0.14)

K-40 -- 1.723 LOC # 37C 1.895 1.895 0 1.13 - 2.28 ) 3.5 MILES WSW ( 1.46 - 2.48 ) ( 1.46 - 2.48 CR-51 -- 0.039 LOC # 32 0.148 0.100 0

-0.13 - 0.26 ) VIC DISCHARGE ( 0.00 - 0.26 ) ( -0.03 - 0.26 MN-54 0.13 0.0000 LOC # 32 0.0063 0.0055 0

-0.023 - 0.011 ) VIC DISCHARGE ( 0.000 - 0.011 ) ( -0.016 - 0.026 CO-58 0.13 0.0005 LOC # 32 0.0075 0.0028 0

-0.024 - 0.023 ) VIC DISCHARGE ( -0.003 - 0.023 ) ( -0.005 - 0.010 FE-59 0.26 0.0095 LOC # 34X 0.0300 0,0050 0

-0.035 - 0.100 ) 4.0 MILES ENE ( 0.001 - 0.100 ) ( -0.021 - 0.031 3-12

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

CO-60 0.13 0.0008 LOC # 32 0.0125 0.0118 0

-0.028 - 0.017 ) VIC DISCHARGE ( 0.007 - 0.017 ) ( 0.000 - 0.024 ZN-65 0.26 -0.0140 LOC # 37C 0.0428 0.0428 0

(-0.074 - 0.081 ) 3.5 MILES WSW (-0.037 - 0.210) (-0.037 - 0.210)

ZR-95 -- -0.0024 LOC # 36 0.0103 -0.0035 0

(-0.031 - 0.027 ) 3.0 MILES WSW (-0.015 - 0.027) (-0.055 - 0.026)

NB-95 -- 0.0024 LOC # 40X 0.0118 0.0050 0

-0.028 - 0.022 ) ONSITE QUARRY ( 0.000 - 0.018 ) ( -0.009 - 0.017 RU-103 -- 0.0005 LOC # 40X 0.0078 -0.0010 0

(-0.022 - 0.020 ) ONSITE QUARRY (-0.002 - 0.015) (-0.008 - 0.005)

RU-106 -- 0.003 LOC # 34X 0.080 0.010 0

-0.20 - 0.20 ) 4.0 MILES ENE ( -0.07 - 0,20 ) ( -0.07 - 0.20 AG-l1OM -- 0.0200 LOC # 40X 0.0535 -0.0045 0

-0.021 - 0.076 ) ONSITE QUARRY ( 0.027 - 0.076 ) ( -0.017 - 0.008 1-131 -- -0.0372 LOC # 32 0.0188 -0.0558 0

( -0.280 - 0.090 ) VIC DISCHARGE ( -0.070 - 0.090 ) ( -0.100 - -0.005 SB-125 -- 0.0071 LOC # 36 0.0198 -0.0023 0

( -0.056 - 0.086 ) 3.0 MILES WSW ( -0.007 - 0.065 ) ( -0.025 - 0.037 CS-134 0.13 0.0019 LOC # 40X 0.0158 -0.0028 0

( -0.012 - 0.028 ) ONSITE QUARRY (0.006 - 0.028) (-0.009 - 0.008)

CS-137 0.15 -0.0091 LOC # 34X 0.0065 -0.0018 0

(-0.040 - 0.016 ) 4.0 MILES ENE (-0.003 - 0.016) (-0.022 - 0.018)

TH-228 -- 0.0147 LOC # 36 0.0463 -0.0003 0

(-0.063 - 0.080 ) 3.0 MILES WSW (0.017 - 0.080) (-0.070 - 0.046)

GAMMA 16, 0 CLAMS BE-7 0.009 LOC # 29 0.075 0 (PCI/G WET) ( -0.10 - 0.21 ) 0.4 MILES NNE -0.05 - 0.21 )

3-13

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

K-40 -- 2.009 LOC # 29 2.255 -- 0 1.40 - 2.64 ) 0.4 MILES NNE ( 2.03 - 2,62 CR-51 -- -0.009 LOC # 29 0.083 -- 0

(-0.24 - 0.26) 0.4 MILES NNE (-0.12 - 0.26)

MN-54 0.13 0.0026 LOC # 38 0.0075 -- 0

(-0.030 - 0.016) 1.0 MILES NW (0.003 - 0.016)

CO-58 0.13 0.0006 LOC # 39X 0.0075 -- 0

-0.015 - 0.020 ) JORDAN COVE BAR ( -0.003 - 0.020 FE-59 0.26 -0.0028 LOC # 39X 0.0115 -- 0

-0.061 - 0.059 ) JORDAN COVE BAR ( -0.033 - 0.059 CO-60 0.13 0.0006 LOC # 35X 0.0043 -- 0

-0.024 - 0.021 ) 0.3 MILES WNW ( 0.000 - 0.008 ZN-65 0.26 -0.0089 LOC # 38 0.0165 -- 0

-0.075 - 0.074 ) 1.0 MILES NW ( -0.015 - 0.074 ZR-95 -- -0.0001 LOC # 39X 0.0103 -- 0

(-0.030 - 0.034) JORDAN COVE BAR (-0.010 - 0.026)

NB-95 -- -0.0036 LOC # 39X -0.0005 -- 0

-0.034 - 0.024 ) JORDAN COVE BAR ( -0.016 - 0.008 RU-103 -- -0.0008 LOC # 39X 0.0020 -- 0

(-0.026 - 0.026) JORDAN COVE BAR (-0.011 - 0.012)

RU-106 -- -0.019 LOC # 35X 0.025 -- 0

-0.19 - 0.14 ) 0.3 MILES WNW ( -0.06 - 0.14 AG-ilOM -- 0.0012 LOC # 38 0.0078 -- 0

-0.017 - 0.019 ) 1.0 MILES NW ( 0.001 - 0.013 3-14

Dorninion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

I-131 -- 0.0344 LOC # 29 0.0778 -- 0

-0.040 - 0.300 ) 0.4 MILES NNE ( -0.008 - 0.300 SB-125 -- 0.0039 LOC # 29 0.0125 -- 0

-0.026 - 0.037 ) 0.4 MILES NNE ( -0.002 - 0.024 CS-134 0.13 -0.0003 LOC # 29 0.0030 -- 0

-0.021 - 0.016 ) 0.4 MILES NNE ( -0.002 - 0.016 CS-137 0.15 -0.0011 LOC # 29 0.0010 -- 0

(-0.017 - 0.018 ) 0.4 MILES NNE (-0.017 - 0.018)

TH-228 -- -0.0030 LOC # 35X 0.0215 -- 0

-0.080 - 0.051 ) 0.3 MILES WNW ( -0.009 - 0.051 GAMMA 12, 0 LO]5STERS BE-7 -0.007 LOC # 35 0.048 0 (P(.I/G WET) ( -0.11 - 0.10 ) 0.3 MILES WNW ( 0.01 - 0.10 ?

K-40 2.305 LOC # 37X 2.415 0

( 1.71 - 2.91 ) 3.5 MILES WSW ( 2.04 - 2.91 )

CR-51 -- 0.053 LOC # 35 0.180 -- 0

-0.21 - 0.39 ) 0.3 MILES WNW ( 0.00 - 0.39 MN-54 0.13 -0.0013 LOC # 37X 0.0045 -- 0

(-0.018 - 0.019) 3.5 MILES WSW (-0.002 - 0.011)

CO-58 0.13 0.0010 LOC # 35 0.0050 -- 0

(-0.012 - 0.012) 0.3 MILES WNW (-0.002 - 0.012)

FE-59 0.26 0.0014 LOC # 32 0.0130 -- 0

( -0.035 - 0.046 ) VIC DISCHARGE ( -0.020 - 0.046 CO-60 0.13 0.0008 LOC # 37X 0.0093 -- 0

( -0.011 - 0.021) 3.5 MILES WSW (-0.003 - 0.021)

ZN-65 0.26 -0.0200 LOC # 32 -0.0058 -- 0

( -0.083 - 0.041 ) VIC DISCHARGE ( -0.039 - 0.041 3-15

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3-1 ENVIRONMENTAL RADIOLOGICAL MONITORING PROGRAM

SUMMARY

MILLSTONE POWER STATION, UNITS 1, 2 AND 3 DOCKETS 50-245, 50-336 & 50-339 JANUARY-DECEMBER 2002 MEDIUM TYPE AND LOWER INDICATOR LOCATION WITH HIGHEST ANNUAL MEAN CONTROL # OF OR TOTAL NUMBER LIMIT OF LOCATIONS LOCATION #, LOCATIONS NRM PATHWAY OF ANALYSES DETECTION MEAN DISTANCE & MEAN MEAN SAMPLED PERFORMED (D) (LLD) (A) RANGE (B) DIRECTION (RANGE) (B) (RANGE) (B) (C)

ZR-95 0.0043 LOC # 32 0.0100 0

-0.035 - 0.047 ) VIC DISCHARGE ( -0.009 - 0.047 NB-95 -- -0.0016 LOC # 32 0.0063 -- 0

-0.029 - 0.017 ) VIC DISCHARGE C -0.006 - 0.017 RU-103 -- -0.0027 LOC # 35 0.0108 -- 0

(-0.021 - 0.021) 0.3 MILES WNW (0.003 - 0.021)

RU-106 -- 0.008 LOC # 35 0.040 -- 0

(-0.24 - 0.12) 0.3 MILES WNW (-0.05 - 0.12)

AG-liOM -- -0.0071 LOC # 32 0.0000 -- 0

-0.042 - 0.012 ) VIC DISCHARGE ( -0.006 - 0.005 1-131 -- -0.017 LOC # 32 0.041 -- 0

-0.20 - 0.22 ) VIC DISCHARGE ( -0.03 - 0.22 SB-125 -- 0.0043 LOC # 37X 0.0185 -- 0

(-0.031 - 0.030) 3.5 MILES WSW (-0.004 - 0.030)

CS-134 0.13 0.0027 LOC # 37X 0.0060 -- 0

(-0.011 - 0.012) 3.5 MILES WSW (-0.002 - 0.011)

CS-137 0.15 0.0003 LOC # 37x 0.0053 -- 0 C -0.032 - 0.020 ) 3.5 MILES WSW ( -0.001 - 0.011 SB-125 -- 0.0043 LOC # 37X 0.0185 -- 0

-0.031 - 0.030 ) 3.5 MILES WSW ( -0.004 - 0.030 TH-228 -- -0.0108 LOC # 32 0.0118 -- 0

-0.086 - 0.069 ) VIC DISCHARGE ( -0.066 - 0.069 3-16

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station NOTES FOR TABLE 3-1 A. For gamma measurements the (Minimum Detectable Level) MDL's -

LLD > 2.33. For all others, MDL = 2 x (the standard deviation of the background). These MDL's are based on the absence of large amounts of interfering activity (excluding naturally occurring radionuclides). Deviations by about factors of 3 to 4 can occur.

The LLD at a confidence level of 95% is the smallest concentration of radioactive material in a sample that will be detected with a 5%

probability of falsely concluding that a blank observation represents a "real" signal.

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

LED=- 4.66 Sb E

V

2.22

Y

exp (-AAt) where, LLD is the lower limit of detection as defined above (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 transformation)

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

X is the radioactive decay constant for the particular radionuclide At is the elapsed time between sample collection (or end of the sample collection period) and time of counting It should be recognized that LLD is a defined a priori (before the fact) limit representing the capability of a measurement system and not an aposteriori(after the fact) limit for a particular measurement.

Analyses shall be performed in such a manner that the stated LLDs will be achieved under routine conditions. Occasionally background fluctuations, unavoidably small sample sizes, the presence of interfering nuclides, or other uncontrollable circumstances may render these a priori LLDs unachievable. In such cases, the contributing factors will be identified and described in the Annual Radiological Environmental Operating Report. As shown in the 3-17

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station equation above, for composite samples taken over a period of time, the LLD is decayed to the end of the sample period.

B. Analytical results are handled as recommended by HASL ("Reporting of Analytical Results from HASL," letter by Leo B. Higginbotham) and NUREG/CR-4007 (Sept. 1984). Negative values were used in the determination of mean.

C. Nonroutine reported measurements (NRM's). These are results of samples that exceed the report levels of Table E-2 of the Radiological Effluent Monitoring Manual.

D. First number is the number of indicator measurements, the second is the number of control measurements.

E. Assuming 270 m 3 F. Assuming 1080 m3 G. LLD for leafy vegetables.

H. LLD from the end of the sample period.

3-18

Dominion Nuclear Connecticut, Inc. Annual Radiological E nvirnnmental Operating Report 2002 Millstone Station 3.2. Data Tables The data reported in this section are strictly counting statistics.

The reported error is two times the standard deviation (27) of the net activity. Unless otherwise noted, the overall error (counting, sample size, chemistry, errors, etc.) is estimated to be 2 to 5 times that listed. Results are considered positive when the measured value exceeds 1.5 times the listed 2cy error (i.e., the measured value exceeds 3ca).

Because of counting statistics, negative values, zeros and numbers below the Minimum Detectable Level (MDL) are statistically valid pieces of data. For the purposes of this report, in order to indicate any background biases, all the valid data are presented. In instances where zeros are listed after significant digits, this is an artifact of the computer data handling program.

Data are given according to sample type as indicated below.

1. Gamma Exposure Rate

2. Air Particulates, Gross Beta Radioactivity

3. Air Particulates, Weekly I-131

4. Air Particulates, Quantitative Gamma Spectra

5. Air Particulates, Quarterly Strontium*

6. Soil

7. Milk - Dairy Farms*

8. Milk - Goat Farms

9. Pasture Grass 10 .Well Water*

1 1.Reservoir Water*

12.Fruits & Vegetables 13.Broad Leaf Vegetation

14. Seawater 15.Bottom Sediment 16.Aquatic Flora 17.Fin Fish 18.Mussels 19 .Oysters 20.Clams 21.Scallops*

22.Lobster (and Crabs)

This type of sampling or analysis was not performed, therefore there is no table.

3-19

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 1 QUARTERLY TLD GAMMA EXPOSURE RATE (UR/HR)*

L O C A T IO N S PERIOD 01 02 03 04 05 06 07 08 09 10 11

(+/1-() (+( ) (+(1/) (+/-) (4/-) (+/-) (+/ ) (+/-) (+/ ) (+/-)

1Q 8.7 0.3 9.8 0.6 7.2 0.3 8.7 0.5 9.9 0.4 8.5 0.5 5.6 0.3 12.1 0.7 9.3 0.3 8.7 0.3 7.2 0.4 2Q 8.2 0.4 9.4 0.3 6.9 0.3 8.0 0.4 9.0 0.3 8.2 0.3 5.1 0.2 11.6 0.3 9.4 0.6 8.2 0.2 6.7 0.3 3Q 8.6 0.4 9.7 0.6 7.0 0.4 8.5 0.4 9.7 0.4 8.2 0.3 4.8 0.3 11.8 0.7 9.6 0.4 8.1 0.4 6.6 0.4 4Q 8.5 0.5 9.8 0.3 6.3 0.2 8.2 0.3 9.5 0.3 8.8 0.3 5.2 0.3 11.8 0.5 9.3 0.3 8.5 0.3 7.4 0.3 PERIOD 12C 13C 14C 15C 16C 27 41 42 43 44 45

( /- ) (--- ) (--- ) (--- ) (--- ) (--- ) (--- ) (--- ) (--- ) (--- ) (--- )

1Q 7.5 0.5 9.0 0.5 9.4 0.4 7.9 0.3 6.1 0.2 7.5 0.2 6.9 0.3 8.0 0.4 6.9 0.2 8.9 0.4 8.3 0.4 2Q 8.0 0.3 8.4 0.3 9.3 0.3 7.7 0.4 5.7 0.2 8.7 0.3 6.7 0.3 7.9 0.4 6.6 0.2 9.0 0.5 7.2 0.4 3Q 7.6 0.6 8.2 0.4 9.8 0.4 8.2 0.5 6.2 0.2 9.0 0.4 6.9 0.4 8.2 0.4 6.8 0.4 9.2 0.4 7.8 0.3 4Q 7.5 0.3 8.3 0.3 9.6 0.4 7.9 0.3 6.2 0.2 9.0 0.3 6.7 0.3 8.0 0.3 6.9 0.2 9.3 0.4 7.7 0.3 PERIOD 46 47 48 49 50 51 52 53 55 56 57 1Q 8.5 0.4 8.1 0.3 10.2 0.5 7.5 0.3 8.3 0.3 6.3 0.5 7.4 0.3 8.0 0.3 7.5 0.6 6.9 0.3 7.5 0.6 2Q 7.7 0.2 7.6 0.3 9.7 0.4 7.2 0.2 7.9 0.4 6.2 0.2 7.0 0.3 7.6 0.3 7.4 0.2 6.4 0.2 7.0 0.2 3Q 7.6 0.5 7.8 0.3 10.2 0.4 7.3 0.3 8.1 0.6 6.3 0.4 7.2 0.3 8.1 0.4 7.5 0.4 6.7 0.5 7.1 0.4 4Q 8.2 0.4 8.0 0.4 9.8 0.3 7.2 0.4 8.0 0.4 6.3 0.3 7.3 0.2 7.9 0.2 7.8 0.4 6.7 0.3 7.2 0.2 PERIOD 59 60 61 62 63 64 65 66X

(+/-) (+/-) (+/-) (+/-) (+1-) (+/-) (+/-) (+/-)

1Q 8.5 0.5 7.4 0.3 8.0 0.5 8.4 0.5 9.4 0.4 7.9 0.3 8.4 0.4 7.6 0.3 2Q 8.0 0.2 7.3 0.6 7.7 0.5 7.8 0.2 8.4 0.4 7.4 0.4 7.7 0.2 7.1 0.2 3Q 8.7 0.4 7.3 0.5 7.7 0.3 8.2 0.3 9.3 0.5 7.7 0.3 8.2 0.6 7.3 0.3 4Q 8.3 0.3 7.0 0.3 7.5 0.3 8.2 0.3 9.0 0.3 7.9 0.3 7.9 0.3 7.1 0.4

READINGS ARE THE AVERAGE OF MULTI CAS04T PHOSPHOR ELEMENTS WITHIN ONE PANASONIC TLD BADGE ERRORS ARE 1-SIGMA AND INCLUDE COUNTING, TRANSIT, READER AND FADE UNCERTAINITIES 3-20

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 2 AIR PARTICULATES GROSS BETA RADIOACTIVITY (PCI/M3)

L O C A T I O N S PERIOD ENDING 01 02 03 04 10 11 15C 27

(+/-) (2 /) (. /) (+/-) (. /) (+/-) (+ /) (1 /)

JAN 08 0.016 0.005 0.021 0.005 0.024 0.005 0.028 0.005 0.024 0.005 0.024 0.005 0.026 0.005 0.026 0.005 JAN 15 0.021 0.004 A 0.021 0.004 0.024 0.004 0.021 0.004 0.024 0.004 0.022 0.004 0.022 0.004 JAN 22 0.023 0.004 0.020 0.004 0.022 0.004 0.024 0.004 0.025 0.004 0.024 0.004 0.019 0.004 0.024 0.004 JAN 29 0.019 0.004 0.021 0.004 0.022 0.004 0.025 0.005 0.020 0.004 0.025 0.004 0.022 0.005 0.023 0.004 FEB 05 0.018 0.004 0.017 0.004 0.023 0.004 0.023 0.005 0.022 0.004 0.031 0.033 0.024 0.005 0.023 0.004 FEB 12 0.025 0.004 0.028 0.004 0.025 0.004 0.026 0.004 0.008 0.027 0.029 0.004 0.025 0.004 0.027 0.004 FEB 19 0.012 0.003 0.011 0.003 0.016 0.003 0.014 0.004 0.012 0.003 0.013 0.003 0.017 0.004 0.016 0.003 FEB 26 0.017 0.004 0.018 0.004 0.021 0.004 0.025 0.004 0.021 0.004 0.020 0.004 0.023 0.004 0.002 0.004 MAR 05 0.013 0.004 0.012 0.004 0.016 0.004 0.017 0.004 0.012 0.004 0.015 0.004 0.020 0.005 0.017 0.004 MAR 12 0.025 0.004 0.025 0.004 0.027 0.004 0.028 0.005 0,024 0.004 0.028 0.004 0.029 0.005 0.030 0.004 MAR 19 0.019 0.004 0.018 0.004 0.021 0.004 0.021 0.004 0.025 0.004 0.023 0.004 0.022 0.005 0.025 0.004 MAR 26 0.019 0.004 0.020 0.004 0.025 0.004 0.022 0,005 0.024 0.004 0.027 0.004 0.022 0.005 0.022 0.004 APR 02 0.014 0.004 0.014 0,004 0.014 0.004 0.016 0.004 0.017 0.004 0.019 0.004 0.016 0.004 0.019 0.003 APR 09 0.023 0.004 0.023 0.004 0.020 0.004 0.022 0.004 0.021 0.004 0.020 0.004 0.018 0.004 0.022 0.004 APR 16 0.012 0.004 0.017 0.004 0.013 0.004 0.016 0.004 0.014 0.004 0.017 0.004 0.018 0.004 0.016 0.004 APR 23 0.020 0.004 0.019 0.004 0.023 0.004 0.017 0.004 0.020 0.004 0.020 0.004 0.022 0.004 0.025 0.004 APR 30 0.014 0.003 0.015 0.003 0.018 0.003 0.016 0.004 0.018 0.004 0.017 0.003 0.014 0.003 0.015 0.003 MAY 07 0.017 0.003 0.018 0.004 0.017 0.003 0.019 0.004 0.020 0.004 0.018 0.003 0.019 0.004 0.018 0.003 MAY 14 0.012 0.003 0.011 0.003 0.014 0.003 0.014 0.004 0.014 0.003 0.013 0.003 0.014 0.004 0.014 0.003 MAY 21 0.016 0.003 0.016 0.003 0.016 0.003 0.014 0.004 0.016 0.003 0.015 0.003 0.018 0.004 0,017 0.003 MAY 28 0.013 0.003 0.011 0.003 0.014 0.003 0.018 0.004 0.013 0.003 0.013 0.003 0.016 0.004 0.013 0.003 JUN 04 0.023 0.004 0.022 0.004 0.019 0.004 0.023 0.004 0.023 0.004 0.021 0.004 0.022 0.004 0.022 0.004 JUN 11 0.012 0.004 0.013 0.004 0.012 0.003 0.013 0.004 0.011 0.003 0.011 0.004 0.008 0.004 0.011 0.003 JUN 18 0.008 0.003 0.009 0.003 0.009 0.003 0.011 0.003 0.012 0.003 0.010 0.003 0.012 0.003 0.008 0.003 JUN 25 0.018 0.004 0.015 0.004 0.019 0.004 0.022 0.005 0.019 0.004 0.017 0.004 0.016 0.004 0.015 0.004 SAMNLE DATES MAY VARY BY A FEW DAYS A; NO SAMPLE WAS COLLECTED DUE TO PUMP FAILURE FROM BLOWN FUSE 3-21

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 2 AIR PARTICULATES GROSS BETA RADIOACTIVITY (PCI/M3)

L O C A T I O N S PERIOD ENDING 01 02 03 04 10 11 15C 27 (0/0) ( 00) ( 00) (+/-) (0/0) (0/-) (+/ )

JUL 02 0.018 0.004 0.017 0.004 0.018 0.004 0.020 0.005 0.020 0.004 0.018 0.004 0.018 0.005 0.017 0.004 JUL 09 0.029 0.004 0.025 0.004 0.029 0.004 0.028 0.005 0.031 0.004 0.032 0.004 0.024 0.005 0.026 0.004 JUL 16 0.023 0.004 0.016 0.003 0.019 0.003 0.021 0.003 0.018 0.003 0.019 0.003 0.022 0.004 0.018 0.003 JUL 23 0.026 0.004 0.022 0.004 0.027 0.004 0.025 0.004 0.027 0.004 0.025 0.004 0.027 0 .005 0.025 0.004 JUL 30 0.017 0.004 0.018 0.004 0.017 0.004 0.020 0.004 0.017 0.004 0.016 0.004 0.019 0.004 0.017 0.004 AUG 06 0.032 0.004 0.027 0.004 0.030 0.004 0.033 0.004 0.030 0.004 0.030 0.004 0.031 0.004 0.032 0.004 AUG 13 0.015 0.003 0.013 0.003 0.017 0.003 0.015 0.003 0.016 0.003 0.017 0.003 0.016 0.004 0.016 0.003 AUG 20 0.030 0.004 0.028 0.004 0.026 0.004 0.032 0.004 0.032 0.004 0.030 0.004 0.034 0.004 0.030 0.004 AUG 27 0.021 0.004 0.017 0.004 0.021 0.004 0.019 0.004 0.022 0.004 0.019 0.004 0.020 0.004 0.018 0.004 SEP 03 0.013 0.003 0.012 0.003 0.013 0.003 0.013 0.003 0.010 0.003 0.013 0.003 0.012 0.003 0.012 0.003 SEP 10 0.019 0.004 0.016 0.004 0.019 0.003 0.018 0.004 0.019 0.004 0.019 0.004 0.023 0.004 0.019 0.003 SEP 17 0.017 0.003 0.019 0.004 0.018 0.003 0.017 0.004 0.020 0.004 0.020 0.004 0.021 0.004 0.017 0.003 SEP 24 0.025 0.004 0.022 0.004 0.019 0.004 0.023 0.004 0.022 0.004 0.025 0.004 0.023 0.004 0.026 0.004 OCT 01 0.022 0.004 0.018 0.004 0.019 0.004 0.020 0.004 0.021 0.004 0.024 0.004 0.021 0.004 0.020 0.004 OCT 08 0.019 0.004 0.026 0.005 0.018 0.004 0.025 0.005 0.024 0.004 0.025 0.004 0.028 0.004 0.027 0.004 OCT 15 0.013 0.004 0.008 0.004 0.014 0.004 0.013 0.004 0.015 0.004 0.015 0.004 0.015 0.003 0.012 0.004 OCT 22 0.014 0.004 0.010 0.004 0.015 0.004 0.014 0.004 0.016 0.004 0.017 0.004 0.017 0.004 0.011 0.004 OCT 29 0.010 0.004 0.010 0.004 0.016 0.004 0.015 0.004 0.013 0.004 0.016 0.004 0.017 0.004 0.013 0.004 NOV 05 0.019 0.004 0.015 0.004 0.023 0.004 0.021 0.004 0.022 0.004 0.020 0.004 0.022 0.004 0.017 0,004 NOV 12 0.027 0.005 0.027 0.005 0.025 0.004 0.025 0.004 0.027 0.004 0.027 0.004 0.026 0.004 0.027 0.004 NOV 19 0.017 0.004 0.017 0.004 0.016 0.003 0.017 0.004 0.016 0.004 0.018 0.004 0.016 0.003 0.017 0.003 NOV 26 0.019 0.004 0.018 0.005 0.026 0.004 0.025 0.004 0.023 0.004 0.024 0.004 0.019 0.004 0.024 0.004 DEC 03 0.016 0.004 0.022 0.004 0.019 0.004 0.019 0.004 0.021 0.004 0.020 0.004 0.020 0.004 0.020 0.004 DEC 10 0.022 0.004 0.023 0.004 0.023 0.004 0.027 0.004 0.025 0.004 0.030 0.005 0.023 0.004 0.023 0.004 DEC 17 0.017 0.004 0.016 0.004 0.016 0.004 0.016 0.004 0.017 0.004 0.014 0.003 0.017 0.004 0.014 0.004 DEC 23 0.018 0.004 0.015 0.003 0.018 0.003 0.017 0.004 0.018 0.003 0.015 0.004 0.018 0.004 0.016 0.004 DEC 31 0.017 0.004 0.019 0.003 0.019 0.003 0.020 0.004 0.019 0.003 0.020 0.004 0.019 0.003 0.019 0.003 SAMPLE DATES MAY VARY BY A FEW DAYS 3-22

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operting Report 2002 Millstone Station TABLE 3 AIRBORNE IODINE 1-131 (PCI/M3)

L O C A T I O N S PERIOD ENDING 01 02 03 04 10 11 15C 27

(+ 0) ( /0) (+/ ) (0/0) ( 02) (+/ ) (0/0) (+/ )

JAN 08 0.009 0.026 0.010 0.024 0.004 0.023 -0.005 0.024 -0.023 0.023 -0.006 0.021 0.005 0.027 -0.015 0.024 JAN 15 -0.012 0.022 A -0.012 0.016 0.002 0.022 0.005 0.022 0.017 0.017 0.005 0.022 -0.004 0.015 JAN 22 -0.007 0.018 0.014 0.025 0.007 0.020 -0.005 0.016 -0.005 0.020 -0.005 0.020 0.019 0.021 0.000 0.019 JAN 29 -0.005 0.022 0.006 0.021 -0.009 0.020 0.003 0.021 0.020 0.020 0.004 0.018 -0.005 0.022 -0.004 0.018 FEB 05 -0.008 0.021 -0.003 0.020 -0.008 0.019 0.006 0.020 -0.008 0.021 -0.022 0.035 -0.005 0.019 0.003 0.020 FEB 12 -0.016 0.024 -0.011 0.024 -0.003 0.022 0.008 0.022 0.009 0.035 -0.005 0.024 -0.004 0.024 -0.003 0.023 FEB 19 -0.016 0.024 -0.006 0.019 0.012 0.020 0.013 0.019 -0.002 0.024 -0.012 0.021 0O.011 0.023 0.000 0.021 FEB 26 0.015 0.027 -0.025 0.028 0.031 0.027 -0.028 0.027 -0.026 0.025 0.019 0.028 0.010 0.027 0.012 0.025 MAR 05 -0.002 0.022 -0.005 0.018 0.012 0.016 -0.011 0.017 -0.005 0.017 0.001 0.017 0.001 0.018 -0.004 0.015 MAR 12 0.017 0.020 0.013 0.021 0.003 0.017 0.022 0.020 0.002 0.016 -0.005 0.014 0.017 0.016 0.009 0.014 MAR 19 0.011 0.020 -0.014 0.019 0.012 0.020 0.014 0.026 -0.003 0.021 0.011 0.019 0.016 0.018 0.022 0.020 MAR 26 0.001 0.015 -0.005 0.015 0.002 0.014 0.008 0.016 -0.004 0.016 0.004 0.017 -0.017 0.017 -0.004 0.016 APR 02 0.009 0.023 -0.006 0.022 0.018 0.024 -0.016 0.026 -0.008 0.031 -0.022 0.026 0.004 0.027 -0.008 0.025 APR 09 0.000 0.015 0.014 0.014 -0.014 0.020 0.013 0.021 -0.009 0.018 0.001 0.017 0.013 0.020 0.001 0.012 APR 16 -0.009 0.017 0.005 0.016 -0.004 0.014 -0.003 0.019 0.011 0.017 0.000 0.018 0.023 0.020 -0.006 0.017 APR 23 0.001 0.015 -0.008 0.015 0.006 0.014 0.000 0.015 0.010 0.016 -0.010 0.015 0.004 0.017 -0.004 0.012 APR 30 0.006 0.015 0.005 0.018 0.011 0.016 0.010 0.017 0.009 0.018 -0.007 0.019 -0.002 0.019 -0.004 0.015 MAY 07 0O.011 0.018 0.002 0.019 0.016 0.016 0.015 0.020 0.014 0.018 0.002 0.014 -0.003 0.018 0.011 0.014 MAY 14 0.003 0.019 0.028 0.022 0.018 0.020 0.000 0.024 0.002 0.020 0.005 0.022 -0.002 0.021 0.026 0.019 MAY 21 0.015 0.015 -0.004 0.015 -0.018 0.017 -0.007 0.018 0.007 0.014 -0.011 0.017 -0.009 0.015 0.018 0.014 MAY 28 0.011 0.017 -0.014 0.021 -0.002 0.018 -0.017 0.021 0.003 0.016 -0.007 0.018 -0.002 0.021 -0.011 0.018 JUN 04 0.000 0.020 -0.011 0.021 0.013 0.026 -0.005 0.020 0.010 0.020 -0.003 0.016 0.001 0.021 0.006 0.021 JUN 11 0.012 0.022 0.000 0.014 0.007 0.014 -0.014 0.022 0.012 0.020 0.008 0.016 -0.003 0.020 0.011 0.017 JUN 18 0.000 0.014 -0.008 0.020 -0.004 0.016 0.019 0.020 -0.007 0.016 -0.001 0.017 0.005 0.019 -0.004 0.017 JUN 25 -0.003 0.022 -0.009 0.020 0.005 0.021 -0.010 0.024 -0.003 0.020 0.003 0.021 -0.004 0.023 -0.003 0.019 SAMPLE DATES MAY VARY BY A FEW DAYS A: NO SAMPLE WAS COLLECTED DUE TO PUMP FAILURE FROM BLOWN FUSE 3-23

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 3 AIRBORNE IODINE 1-131 (PCI/M3)

L O C A T IO N S PERIOD ENDING 01 02 03 04 10 11 15C 27

(+/-) ( 02) (+/ ) ( 02) (0/0) ( 02) (+/ ) (+/ )

JUL 02 0.008 0.020 -0.009 0.027 0.003 0.029 0.001 0.027 0O.011 0.020 0.018 0.024 -0.002 0.031 -0.002 0.026 JUL 09 0.010 0.022 0.000 0 .021 -0. 011 0.017 -0.011 0.024 0.007 0.021 0.002 0.021 -0.009 0.026 0.019 0.017 JUL 16 -0.004 0.025 -0.016 0.024 -0.006 0.020 0.009 0.022 0.009 0.020 0.009 0.025 0.000 0.026 -0.002 0.024 JUL 23 0.005 0. 019 0.010 0.017 0.001 0.017 -0.005 0.015 -0.008 0.016 -0.002 0.019 0.000 0.022 0.003 0.015 JUL 30 0.003 0.021 -0.016 0.021 -0.002 0.016 0.000 0.018 0.008 0,018 0O.011 0.018 -0.006 0.021 0.009 0.018 AUG 06 -0.002 0.020 -0.004 0.021 -0.012 0.018 -0.002 0.021 0.003 0.019 -0.007 0.022 -0.009 0.017 -0.009 0.016 AUG 13 -0.007 0.015 0.005 0.018 -0.009 0.017 -0.009 0.016 0.000 0.015 0.009 0.020 -0.002 0,017 -0.013 0.014 AUG 20 -0.002 0.024 0.024 0.028 0.026 0.024 -0.010 0.026 0.033 0.031 0.025 0.023 0.015 0.023 0.000 0.020 AUG 27 0.003 0,021 0.011 0.017 0.005 0.018 0.007 0.019 -0.010 0.020 -0.004 0.014 0.005 0.015 -0.002 0.014 SEP 03 -0.004 0,020 0.005 0.025 0.002 0.022 0.002 0.022 0.006 0.022 -0.006 0.019 -0.004 0.022 -0.011 0.022 SEP 10 -0.005 0.030 -0.002 0.023 -0.029 0.022 -0O.011 0.031 0.003 0.030 -0.010 0.027 0.026 0.037 -0.016 0.023 SEP 17 0.015 0.025 0.003 0.029 -0,024 0.029 -0.005 0.033 -0.007 0.033 -0.025 0.030 0.022 0.032 0.008 0.027 SEP 24 -0.006 0.024 -0.023 0.027 -0.012 0.023 0.011 0.025 -0.015 0.026 -0.004 0.023 0.032 0.028 -0.028 0.026 OCT 01 -0.008 0.019 -0.004 0.019 -0.013 0.018 -0.002 0.018 -0.016 0.018 -0.003 0.018 -0.002 0.021 0.008 0.018 OCT 08 -0.004 0.018 -0.010 0.021 -0.001 0.019 0.002 0.020 -0.010 0.021 0.017 0.025 0.004 0.025 -0.019 0.021 OCT 15 -0.009 0.019 -0.020 0.020 -0.020 0.020 0.002 0.018 -0.004 0.019 -0.003 0.018 -0.011 0.017 -0.003 0.014 OCT 22 0.018 0.018 -0.006 0.020 0.007 0.018 -0.013 0.023 0.008 0.023 -0.014 0.022 0.008 0.026 -0.024 0.026 OCT 29 0.003 0.024 -0.007 0.026 0.018 0.031 0.023 0.031 0.011 0.023 0.008 0.017 -0,016 0.021 0.014 0.030 NOV 05 0.002 0.024 -0.015 0.028 0.012 0.025 -0.004 0.024 0.006 0.016 0.000 0.016 0.002 0.015 0.002 0.014 NOV 12 0.007 0.021 0.000 0.024 0.007 0.020 0.011 0.022 0.002 0.022 -0O.011 0.019 -0.006 0.021 0.012 0.018 NOV 19 0.003 0.020 0.001 0.016 0.010 0.015 -0O.011 0.020 -0.003 0.017 0.019 0.016 -0.003 0.017 -0.001 0.016 NOV 26 0.003 0.015 0.004 0.018 -0.005 0.015 -0.017 0.016 0.001 0.013 -0.004 0.016 0.009 0.014 -0.005 0.016 DEC 03 0.026 0.019 0.010 0.019 0.004 0.016 -0.005 0.020 0.015 0.016 0.008 0.019 0.006 0.019 0.006 0.017 DEC 10 -0.030 0.023 0.002 0.023 0.000 0.018 0.006 0.021 -0.005 0.024 -0.008 0.025 0.006 0.017 0.010 0.018 DEC 17 -0.010 0.019 -0.002 0.012 -0.017 0.018 -0.008 0.016 -0.001 0.012 -0.006 0.014 -0.001 0.017 -0.018 0.014 DEC 23 0,005 0.018 0.013 0.017 0.023 0.021 -0.015 0.025 -0.018 0.021 -0.002 0.022 0.007 0.020 -0.008 0.018 DEC 31 0.003 0.027 -0.009 0.026 -0.018 0.026 0.000 0.037 0.012 0.022 0.003 0.032 0.000 0.030 -0.002 0.027 SAMPLE DATES MAY VARY BY A FEW DAYS 3-24

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 4A AIR PARTICULATES GAMMA SPECTRA - QTR 1 (PCI/M3)

A N A L Y S E S LOCATION BE-7 CO-60 ZR-95 NB-95 RU-103

( 04) (+/-) (+/-) (+/ ) (+/ )

01 0.071 0.042 0.0006 0.0010 -0.0007 0.0046 0.0002 0.0081 0.0018 0.0047 02 0.081 0.045 0.0007 0.0013 0.0018 0.0039 -0.0044 0.0072 -0.0021 0.0031 03 0.084 0.039 -0.0005 0 .0011 0.0006 0.0048 0.0047 0.0068 0.0000 0.0036 04 0.094 0.055 0.0000 0.0007 0.0000 0.0058 0.0019 0.0095 0.0000 0.0064 10 0.097 0.051 -0.0001 0.0013 -0.0023 0.0056 -0.0090 0.0100 0.0035 0.0055 11 0.084 0.059 -0.0007 0.0017 0.0005 0.0058 0.0007 0.0087 0.0000 0.0060 15C 0.072 0.047 0.0000 0.0011 0.0057 0.0071 0.0034 0.0085 0.0008 0.0050 27 0.071 0.046 -0.0006 0.0008 0.0031 0.0059 -0.0027 0.0033 0.0029 0.0046 LOCATION RU-106 CS-134 CS-137 BA-140 CE-141 (1 /) (+/ ) ( /0 ) (+/ )

01 0.006 0.008 -0.0002 0.0010 -0.0001 0.0007 -0.010 0.170 0.0053 0.0090 02 0.002 0.008 0.0002 0.0009 0.0005 0.0007 -0.150 0.210 0.0018 0.0071 03 -0.004 0.008 -0.0001 0.0008 -0.0005 0.0010 -0.060 0.290 -0.0013 0.0062 04 0.002 0.010 -0.0006 0.0008 -0.0006 0.0008 -0.010 0.230 -0.0020 0.0100 10 -0.005 0.009 0.0005 0.0010 0.0003 0.0007 0.000 0.370 0.0037 0.0084 11 -0.001 0O.011 0.0000 0.0011 -0.0003 0.0009 0 .100 0.330 0.0017 0.0057 15C 0.000 0.012 -0.0002 0.0010 -0.0005 0.0012 0.150 0.330 0.0030 0.0110 27 -0.004 0.006 0.0000 0.0005 -0.0001 0.0006 0.080 0.270 -0.0028 0.0069 3-25

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 4B AIR PARTICULATES GAMMA SPECTRA - QTR 2 (PCI/M3)

A N A L Y S E S LOCATION BE-7 CO-60 ZR-95 NB-95 RU-103

(+1-) (+/-) ( 00) (4/-)

01 0.132 0.047 0.0000 0. 0008 0.0019 0.0033 0.0002 0.0052 0.0010 0.0053 02 0.079 0.037 0.0004 0.0008 0.0003 0.0033 -0.0006 0.0041 0.0000 0.0037 03 0.074 0.037 -0.0002 0.0005 0.0006 0.0020 -0.0021 0.0048 -0.0004 0.0031 04 0.097 0.043 0.0002 0.0011 0.0012 0.0045 -0.0036 0.0064 -0.0019 0.0039 10 0.093 0.040 0.0006 0.0008 -0.0001 0.0030 -0.0059 0.0052 -0.0008 0.0031 11 0.127 0.043 -0.0006 0.0008 0.0013 0.0040 0.0002 0.0062 0.0036 0.0047 15C 0.100 0.043 0.0004 0.0009 0.0018 0.0037 -0.0066 0.0058 0.0013 0.0040 27 0.053 0.031 0.0001 0. 0008 -0.0002 0.0023 -0.0034 0.0040 -0.0019 0.0032 LOCATION RU-106 CS-134 CS-137 BA-140 CE-141

(+/-) (4/-) (4/-) (+/ )

01 -0.006 0.008 0.0000 0.0008 0.0009 0.0009 0.030 0.120 0.0051 0.0077 02 -0.001 0.001 0.0002 0.0009 0.0002 0.0008 0.080 0.110 0.0020 0.0056 03 -0.002 0.007 -0.0001 0. 0005 -0.0003 0.0005 0.000 0.096 -0.0017 0.0045 04 0.006 0O.011 -0. 0012 0.0011 0.0001 0.0007 0.000 0.130 -0.0016 0.0063 10 -0.001 0.007 -0.0002 0.0004 0.0003 0.0006 -0.051 0.073 0.0015 0.0056 11 0.009 0.009 0.0006 0.0012 -0.0003 0.0008 0.020 0.220 0.0034 0.0081 15C -0.004 0.013 0.0000 0.0005 0.0005 0.0008 -0.130 0.150 0.0002 0.0059 27 0.001 0.005 0.0000 0.0007 0.0001 0.0006 -0.024 0.084 0.0021 0.0047 3-26

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 4C AIR PARTICULATES GAMMA SPECTRA - QTR 3 (PCI/M3)

A N A L Y S E S LOCATION BE-7 co-60 ZR-95 NB-95 RU-103

( /0) (/-) (/- ) (+/-)

01 0.133 0.037 -0.0005 0.0007 -0.0011 0.0023 -0.0014 0.0019 0.0006 0.0017 02 0.154 0.040 0.0002 0 .0009 -0.0023 0.0031 -0.0010 0.0039 0.0009 0.0028 03 0,188 0.039 -0.0001 0.0011 0.0005 0.0009 0.0018 0.0028 0.0012 0.0020 04 0.169 0.039 -0.0005 0.0007 -0.0007 0.0026 0.0002 0.0027 0.0003 0.0019 10 0.155 0.033 0.0005 0.0011 -0.0003 0.0027 -0.0030 0. 0021 -0.0005 0.0017 11 0.148 0.039 -0.0002 0.0010 -0.0013 0.0020 0.0021 0.0033 0.0000 0.0024 15C 0.176 0.042 0.0003 0.0005 0.0021 0.0021 0.0012 0. 0035 0.0010 0.0022 27 0.161 0.036 0.0002 0.0004 -0.0007 0.0021 -0.0006 0.0027 0.0003 0.0021 LOCATION RU-106 CS-134 CS-137 BA-140 cE-141

(+/ ) (+/-) (0/0) (+/ )

01 0.006 0.006 -0.0010 0.0009 -0.0005 0.0008 0.006 0.021 -0.0008 0.0028 02 0.005 0.010 0.0003 0.0012 0.0000 0.0008 0.005 0.020 -0.0025 0.0036 03 0.003 0.007 0.0000 0.0006 0.0001 0.0006 -0.012 0.017 0.0018 0.0027 04 0.004 0.008 0.0001 0.0009 0.0000 0.0008 -0.006 0.028 0.0001 0.0028 10 0.002 0.009 -0.0004 0.0005 -0.0001 0.0007 -0.008 0.022 -0.0021 0.0021 11 0.004 0.010 0.0004 0.0010 0.0009 0.0009 0.010 0.022 -0.0013 0.0041 15C 0.005 0.007 -0.0005 0.0005 0.0000 0.0008 0.014 0.033 -0.0015 0.0033 27 -0.001 0.007 0.0002 0.0005 -0.0003 0.0008 -0.006 0.011 -0.0002 0.0028 3-27

Dominion Nuclear Connecticut, Inc. Annual Radiological Enviromnental Operating Report 2002 Millstone Station TABLE 4D AIR PARTICULATES GAMMA SPECTRA - QTR 4 (PCI/M3)

A N A L Y S E S LOCATION BE-7 CO-60 ZR-95 NB-95 RU-103 0+1-) (+0-0) (+/-)

01 0.080 0.021 -0.0003 0.0007 -0.0006 0.0019 -0.0010 0.0019 -0.0003 0.0017 02 0.067 0.023 -0.0003 0.0009 0.0000 0.0029 -0.0033 0.0033 -0.0010 0.0023 03 0.080 0.023 -0.0003 0.0006 -0.0006 0.0015 -0.0003 0.0024 0.0012 0.0017 04 0.094 0.027 -0.0003 0.0006 0.0021 0.0025 -0.0006 0.0028 -0.0007 0.0021 10 0.074 0.020 0.0002 0.0007 -0.0012 0.0016 0.0006 0.0023 -0.0003 0.0015 11 0.055 0.026 -0.0002 0.0010 0.0006 0.0030 0.0030 0.0057 -0.0006 0.0030 15C 0.066 0.023 0.0003 0.0005 0.0003 0.0021 -0.0013 0.0038 0.0000 0.0019 27 0.044 0.021 0.0000 0.0004 0.0011 0.0023 -0.0006 0.0026 0.0008 0.0019 LOCATION RU-106 CS-134 CS-137 BA-140 CE-141 (1 /) (/-) (/- )

01 0.002 0.004 0.0000 0.0005 0.0000 0.0005 0.005 0.037 0.0000 0.0026 02 -0.003 0.007 -0.0002 0.0008 -0.0003 0.0007 -0.045 0.041 0.0017 0.0034 03 0.004 0.005 -0.0002 0. 0006 -0.0002 0.0006 0.000 0.019 0.0007 0.0023 04 -0.003 0.007 -0.0004 0.0006 0.0003 0. 0007 0.015 0.021 0.0009 0.0028 10 0.002 0.005 -0.0003 0.0005 -0.0003 0.0004 0.000 0.019 -0.0021 0.0024 11 0.009 0.007 -0.0004 0.0008 0.0002 0.0007 -0.005 0.054 0.0036 0.0040 15C 0.002 0.005 0.0007 0.0007 -0.0009 0.0006 -0.007 0.041 -0.0009 0.0028 27 -0.001 0.005 -0.0001 0.0005 -0.0003 0.0007 0.007 0.024 -0.0014 0.0024 3-28

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 6 SOIL (PCI/G DRY WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 CO-58 FE-59 CO-60 03 03/19/02 0.21 0.18 8.78 0.78 0.10 0.15 -0.008 0.017 0.005 0.013 -0.028 0.041 -0.006 0.017 05/08/02 -0.09 0.47 9.20 1.50 -0.08 0.53 0.014 0.049 -0.027 0.031 0.050 0.130 -0.017 0.048 09/28/02 0.40 0.38 9.63 0.88 0.11 0.31 -0.013 0.026 0.005 0.023 0.008 0.061 -0. 010 0.031 11/20/02 0.28 0.48 8.10 1.60 -0.15 0.50 0.007 0.044 -0.046 0.046 0.050 0.100 0.054 0.049 04 03/19/02 -0.05 0.21 12.00 1.10 -0.06 0.23 0.003 0.026 -0.004 0.021 -0.051 0.077 0. 011 0.026 05/08/02 0.07 0.17 11.96 0.85 0.04 0.19 -0.017 0.023 0.003 0.018 -0.015 0.064 0.009 0.019 0 9/28/02 0.31 0.24 11.35 0.76 0.01 0.29 0.016 0.023 0.006 0.019 0.010 0.053 -0.006 0.020 11/20/02 0.28 0.44 12.40 1.60 0.11 0.47 0.013 0.044 -0.043 0.036 0.056 0.098 0.007 0.033 14C 03/19/02 0.37 0.40 12.40 1.10 -0.12 0.26 -0.007 0.027 -0.015 0.027 -0O.011 0.069 0.000 0.024 05/08/02 -0.03 0.24 13.04 0.96 -0.13 0.25 0.021 0.027 0.008 0.022 -0.004 0.078 0.002 0.025 09/28/02 0.00 0.29 11.48 0.78 0.18 0.33 0.021 0.022 0.003 0.024 -0.008 0.054 -0.004 0.022 11/20/02 0.24 0.45 11.40 1.50 -0.10 0.58 0.039 0.045 -0.037 0.042 -0.026 0.091 -0.006 0.047 COLLECTION LOCATION DATE ZN-65 ZR-95 NB-95 RU-103 RU-106 CS-134 CS-137 03 03/19/02 -0.026 0.081 0.010 0.031 -0.011 0.020 0.020 0.017 0.04 0.14 0.022 0.019 0.677 0.059 05/08/02 0.000 0.130 0. 055 0.075 0.049 0.062 0.035 0.056 0.14 0.39 -0.027 0.068 0.950 0.140 09/28/02 0.100 0.120 0.032 0.051 0.008 0.050 0.005 0.033 0.11 0.23 0.038 0.026 1.069 0.080 11/20/02 -0.190 0.130 -0.010 0.150 -0.033 0.063 0.015 0.054 0.38 0.45 0.079 0.085 0.760 0.150 04 03/19/02 -0.030 0.130 0.038 0,044 0.009 0.027 0.000 0.023 0.01 0.21 -0.021 0.038 0.400 0.062 05/08/02 -0.055 0.092 0.023 0.036 0.009 0.027 0.007 0.021 0.03 0.17 0.020 0.081 0.302 0.044 09/28/02 0.065 0.091 0.018 0.043 -0.028 0.031 0.015 0.029 0.10 0.20 0.047 0.083 0.358 0.045 11/20/02 0.020 0.100 -0.100 0.130 -0.035 0.058 -0.032 0.049 -0.47 0.42 -0.034 0.045 0.490 0.100 14C 03/19/02 -0.080 0.120 0.007 0.046 0.014 0.030 -0.006 0.029 0.00 0.24 0.020 0.027 1.800 0.110 05/08/02 0.100 0.120 0.023 0.042 0.000 0.045 -0.010 0.026 0.06 0.22 -0.012 0.023 1.258 0.081 09/28/02 0.030 0.110 0.000 0.048 0,026 0.049 -0.014 0.034 -0.14 0.23 -0.033 0.032 1.556 0.084 11/20/02 -0.050 0.230 -0.160 0.150 -0.014 0.088 0.010 0.052 0.41 0.45 0.064 0.050 0.960 0.140 3-29

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 6 SOIL (PCI/G DRY WT.)

COLLECTION LOCATION DATE CE-141 CE-144 SB-125 TH-228

(/- ) (/- ) (+/-) (/ -)

03 03/19/02 0.024 0.027 0.120 0.110 -0.009 0.050 0.501 0.080 05/08/02 0.030 0.100 -0.090 0.350 0.040 0.130 0.720 0.220 09/28/02 0.032 0.048 0.100 0.150 -0.039 0.075 0.650 0.110 11/20/02 -0.042 0.078 -0.080 0.280 -0.060 0.130 0.420 0.300 04 03/19/02 -0.020 0.039 -0.030 0.150 0.078 0.064 1.060 0.120 05/08/02 -0.024 0.033 -0.070 0.120 0.018 0.051 1.130 0.091 09/28/02 0.052 0.048 0.080 0.150 0.019 0.057 0.996 0.091 11/20/02 -0.060 0.085 0.120 0.290 0.090 0.130 0.990 0.210 14C 03/19/02 -0.031 0.045 -0.160 0.350 0.018 0.080 1.130 0.120 05/08/02 0.022 0.041 0.030 0.150 0.079 0.072 1.340 0.110 09/28/02 -0.021 0.057 -0.040 0.170 -0.019 0.080 1.330 0.110 11/20/02 -0.033 0.099 0.140 0.330 -0.020 0.140 1.220 0.230 3-30

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 8 GOAT MILK (PCI/L)

COLLECTION LOCATION DATE K-40 SR-89 SR-90 1-131 CS-134 CS-137 BA-140 LA-140

_ ___ _ _ - )__

( / )

21 06/19/02 1041 84 4.7 9.8 1.29 0.87 0.53 0.51 -1.2 2.9 2.4 3.1 -1.7 5.3 -2.0 6.1 07/11/02 1790 170 0.13 0.26 -5.3 3.9 5.6 4.9 4.1 5.9 4.7 6.8 07/24/02 1660 130 0.04 0.14 -3.0 3.4 1.6 3.7 -2.8 5.4 -3. 2 6.2 08/07/02 1860 130 0.08 0.34 -0.5 3.3 3.7 4.2 1.3 4.8 1.5 5.6 08/14/02 A 0.05 0.19 A A A 09/04/02 931 59 0.28 0.53 1.5 1.7 2.9 2.0 -0.6 2.9 -0.7 3.3 09/25/02 1790 97 -5.0 3.3 0.99 0.97 0.63 0.71 -1.2 2.7 7.2 3.0 -0.7 4.8 -0.9 5.5 10/09/02 583 61 C C -0.15 0.06 0.5 2.0 4.1 2.9 2.4 3.7 2.7 4.3 22 04/10/02 1740 110 0.04 0.21 1.2 2.5 -0.6 2.7 -2.7 3.7 -3.1 4.2 04/24/02 1640 150 -0.03 0.06 1.8 3.5 5.0 4.1 -0.5 6.1 -0.6 7.0 05/08/02 1880 140 0.20 0.35 2.2 5.4 -0.3 4.0 -0.6 6.5 -0.7 7.5 05/22/02 1790 130 0.24 0.49 -0.2 3.8 5.4 3.9 1.6 4.5 1.8 5.2 06/05/02 1760 140 0.06 0.25 -0.8 3.5 15.4 5.3 4.6 5.0 5.3 5.8 06/19/02 1620 120 8.6 6.2 5.80 1.20 0.68 0.70 -0. 9 2.9 4.0 4.5 1.8 4.1 2.1 4.7 07/10/02 1910 130 0.06 0.25 0.6 2.7 17.3 4.7 0.5 3.2 0.6 3.7 07/24/02 1680 110 0.01 0.13 0.6 2.7 17.3 4.7 0.5 3.2 0.6 3.7 08/07/02 1420 130 0.68 0.66 1.4 3.3 14.7 5.2 0.4 5.4 0.5 6.2 08/21/02 1380 130 6.4 6.3 1.80 1.10 0.06 0.38 -0.2 3.3 12.3 4.7 -0.8 3.7 -0.9 4.3 24C 04/24/02 1270 130 0.07 0.12 4.5 5.9 2.4 3.9 -2.5 5.2 -2.9 6.0 05/08/02 1550 100 0.10 0.28 -1. 6 2.6 3.8 2.9 1.1 4.1 1.2 4.7 05/22/02 1830 150 0.15 0.42 -0.5 3.5 5.9 4.3 2.4 5.6 2.7 6.5 06/05/02 1850 150 -0.02 0.14 0.2 3.6 -1.9 3.9 2.3 6.0 2.6 6.9 06/19/02 1750 120 0.3 3.9 2.43 0.83 0.80 0.81 -2.7 3.0 13.5 4.3 0.3 3.9 0.3 4.5 07/11/02 1580 160 0.07 0.25 3.2 4.3 2.3 4.3 -1.8 6.2 -2. 1 7.1 07/24/02 1650 120 0.01 0.11 0.4 2.6 1.2 3.3 1.0 3.9 1.1 4.5 08/07/02 1470 110 -0.06 0.02 0.0 2.4 6.5 3.6 0.2 3.2 0.3 3.7 08/21/02 1770 170 0.69 0.70 2.5 3.8 9.5 5.3 -2.5 4.7 -2.9 5.4 09/04/02 B 0.05 0.35 B B B 09/25/02 1810 110 -6.1 5.0 14.30 1.70 0.68 0.69 -1.7 2.7 5.6 3.4 -4.1 5.5 -4.9 6.3 10/09/02 1980 150 -15.6 9.4 1.77 0.83 0.03 0.33 -0.5 3.4 3.1 4.3 -1.8 4.8 -2.0 5.6 PASTURE GRASS, HAY OR FEED WAS SAMPLED AS A SUBSTITUTE FOR UNAVAILABLE GOAT MILK STRONTIUM ANALYSES ARE COMPOSITES OF ALL MILK SAMPLED FROM A GIVEN LOCATION DURING THE QUARTER A: GAMMA ANALYSIS NOT PERFORMED DUE TO TECHNICIAN ERROR B: GAMMA ANALYSIS NOT PERFORMED DUE TO LAB ERROR C: STRONTIUM ANALYSIS NOT PERFORMED DUE TO LAB ERROR 3-31

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 9 PASTURE GRASS *

(PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 C0-60

(+1-) (+/-) (+/-) (+/-) (+/-) (+/-) (+/-)

21 01/16/02 0.37 0.24 6.79 0.74 -0.050 0.160 -0.023 0.024 -0.011 0.020 0.018 0.072 -0.019 0.028 02/13/02 0.16 0.24 14.50 1.00 0.010 0.250 0.001 0.029 -0.026 0.026 -0.090 0.096 -0.006 0.034 03/13/02 0.03 0.17 18.13 0.86 0.080 0.190 0.009 0.023 -0.007 0.022 -0.025 0.061 0.000 0.023 04/10/02 0.13 0.22 18.20 1.20 0.200 0.230 -0.015 0.032 -0.030 0.029 0.040 0.100 0.003 0.037 04/24/02 0.13 0.21 16.72 0.97 0.070 0.230 -0.031 0.028 0.013 0.027 0.004 0.075 -0.010 0.027 05/08/02 1.07 0.18 4.86 0.47 -0.020 0.110 -0.003 0.013 -0.012 0.012 0.022 0.043 0.022 0.015 05/22/02 2.28 0.20 3.89 0.39 -0.065 0.096 -0.018 0.012 0.004 0.010 0.009 0.039 0.003 0.012 06/05/02 0.31 0.25 6.09 0.65 -0.120 0.240 0.002 0.019 0.000 0.021 0.006 0.055 0.000 0.018 10/23/02 3.35 0.34 5.26 0.53 0.010 0.180 0.012 0.017 0.001 0.017 0.042 0.046 -0.024 0.021 11/20/02 4.40 0.48 3.43 0.72 0.080 0.190 0.020 0.024 0.016 0.022 -0.004 0.051 0.015 0.029 12/11/02 0.30 0.38 13.00 1.20 -0.090 0.320 0.021 0.033 -0.005 0.034 -0.018 0.088 -0.014 0.045 22 01/16/02 0.32 0.45 11.25 0.86 -0.110 0.210 0.007 0.027 0.014 0.026 -0.012 0.067 -0.003 0.026 02/13/02 0.04 0.21 13.92 0.68 -0.030 0.240 -0.002 0.024 -0.006 0.024 0.014 0.071 0.025 0.025 03/13/02 0.02 0.14 16.39 0.74 -0.060 0.170 -0.001 0.020 0.008 0.019 0.024 0.053 -0.005 0.020 09/05/02 5.95 0.46 2.51 0.50 0.000 0.240 -0.010 0.022 0.001 0.021 0.036 0.051 0.010 0.020 09/25/02 1.37 0.37 2.70 0.56 -0.020 0.230 0.007 0.018 0.002 0.022 0.046 0.063 -0.011 0.025 10/09/02 1.86 0.16 6.01 0.37 -0.018 0.084 0.012 0.011 0.004 0.010 -0.014 0.025 -0.001 0.015 10/23/02 2.94 0.22 4.67 0.39 0.000 0.110 -0.001 0.012 0.001 0.011 0.006 0.029 0.011 0.015 11/20/02 5.08 0.44 4.21 0.61 -0.100 0.180 0.000 0.019 -0.004 0.019 0.050 0.049 0.019 0.022 12/11/02 0.13 0.23 18.10 1.00 -0.020 0.290 0.012 0.028 0.001 0.028 0.029 0.074 0.004 0.035 24C 01/16/02 0.91 0.27 9.17 0.71 0.070 0.180 -0.010 0.023 0.014 0.021 0.024 0.059 0.006 0.022 02/13/02 0.31 0.28 12.66 0.77 -0.090 0.230 -0.001 0.022 -0.001 0.024 0.007 0.067 -0.022 0.023 03/13/02 0.02 0.18 12.53 0.89 0.008 0.021 -0.005 0.024 0.008 0.021 0.053 0.080 0.013 0.029 04/10/02 0.12 0.17 13.89 0.80 0.040 0.190 -0.016 0.023 -0.012 0.023 -0.024 0.060 -0.002 0.022 10/23/02 1.54 0.12 4.37 0.26 0.011 0.064 -0.003 0.006 0.001 0.006 0.015 0.017 0.003 0.009 11/20/02 3.02 0.31 3.27 0.46 0.060 0.130 0.004 0.014 -0.005 0.015 -0.005 0.028 -0.001 0.018 12/11/02 0.17 0.29 9.76 0.89 -0.380 0.340 0.010 0.030 -0.032 0.033 0.031 0.079 -0.001 0.036

SAMPLES TAKEN AS A SUBSTITUTE FOR UNAVAILABLE GOAT MILK 3-32

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 9 PASTURE GRASS *

(PCI/G WET WT.)

COLLECTION LOCATION DATE ZN-65 ZR-95 NB-95 RU-103 RU-106 I-131 CS-134 21 01/16/02 -0.053 0. 075 -0.010 0.037 -0.012 0.022 -0.027 0.021 -0.220 0.210 0.004 0.010 0.014 0.023 02/13/02 -0.059 0.070 -0.042 0.049 -0.004 0.033 -0.020 0.028 0.070 0.240 -0.002 0.005 0.030 0.029 03/13/02 -0.053 0.059 -0.034 0.037 -0.017 0.038 -0.004 0.020 -0.040 0.210 0.017 0.030 0.031 0.025 04/10/02 0.000 0.076 -0.004 0.050 -0.031 0.033 0.009 0.028 0.230 0.270 0.005 0.017 0.029 0.035 04/24/02 0O.011 0.097 0.031 0.046 -0.031 0.045 0.003 0.025 0.230 0.260 0.020 0.020 0.018 0.030 05/08/02 -0.031 0.032 -0.009 0.022 0.002 0.014 -0.007 0.012 0.020 0.110 0.005 0.017 0.008 0.012 05/22/02 -0.003 0.038 -0.018 0.016 -0.003 0.014 -0.006 0.010 -0.120 0.110 -0.002 0.018 0.011 0.011 06/05/02 -0.002 0.045 0.014 0.036 -0.036 0.030 -0.021 0.024 -0.020 0.017 0.005 0.021 0.004 0.020 10/23/02 -0.057 0. 063 -0.014 0.032 -0.019 0.021 0.007 0.019 0.080 0.150 -0.006 0.025 -0.010 0.017 11/20/02 0.140 0.120 0.001 0.034 -0.008 0.026 0.012 0.019 -0.080 0.210 0.003 0.015 0.018 0.024 12/11/02 -0.050 0.110 0.020 0.063 0.030 0.043 -0.008 0.034 -0.270 0.310 0.014 0.018 -0.001 0.032 22 01/16/02 -0.061 0.092 0.000 0.042 -0.020 0.045 -0.031 0.024 -0.270 0.260 0.000 0.006 0.024 0.029 02/13/02 0.009 0.053 -0.013 0.042 -0.056 0.043 0.015 0.024 -0.120 0.240 0.003 0.013 0.008 0.025 03/13/02 -0.025 0.071 0.027 0.032 0.015 0.038 -0.019 0.018 -0.050 0.170 0.001 0O.011 0.010 0.021 09/05/02 -0.003 0.055 0.025 0.039 -0.034 0.031 -0.015 0.023 -0.010 0.190 0.024 0.036 0.000 0.022 09/25/02 0.040 0.100 -0.019 0.037 -0.019 0.027 0.025 0.023 -0.070 0.190 0.055 0.048 0.007 0.020 10/09/02 -0.008 0.035 0.018 0.017 -0.010 0.013 0.014 0.009 0.049 0.098 0.010 0.026 0.007 0.012 10/23/02 -0.019 0.028 0.005 0.021 -0.002 0.016 -0.003 0.011 -0.114 0.094 0.001 0.018 0.014 0.012 11/20/02 -0.005 0.070 -0.003 0.032 0.023 0.021 0O.011 0.018 0.110 0.170 -0.003 0.001 0.013 0.019 12/11/02 0.140 0.130 0.011 0.050 -0.031 0.038 -0.017 0.029 -0.060 0.240 0.000 0.006 0.039 0.027 24C 01/16/02 0.011 0.079 0.000 0.035 -0.015 0.037 0.006 0.020 -0.180 0.210 0.000 0.008 0.012 0.024 02/13/02 0.017 0.081 0.015 0.037 0.042 0.028 -0.011 0.024 -0.060 0.200 0.007 0.017 -0.002 0.024 03/13/02 0.007 0.078 -0.016 0.036 -0.001 0.024 -0.007 0.019 0.100 0.200 -0.002 0.007 0.016 0.025 04/10/02 0.009 0.079 0.013 0.037 -0.004 0.038 -0.006 0.020 -0.0 60 0.210 0.004 0.020 0.012 0.025 10/23/02 0.041 0.028 -0.003 0.012 -0.001 0.010 0.000 0.007 -0.036 0.056 0.012 0.026 -0.001 0.007 11/20/02 -0.019 0.038 -0.009 0.025 -0.002 0.014 0.004 0.014 0.010 0.140 0.034 0.035 -0.017 0.015 12/11/02 -0.064 0.084 0.047 0.055 -0.071 0.039 -0.019 0.032 -0.030 0.270 0.006 0O.011 0.024 0.033

SAMPLES TAKEN AS A SUBSTITUTE FOR UNAVAILABLE GOAT MILK 3-33

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 9 PASTURE GRASS *

(PCI/G WET WT.)

COLLECTION LOCATION DATE CS-137 BA-140 LA-140 CE-141 CE-144 SB-125 TH-228

(+/-)

21 01/16/02 0.072 0.029 -0.027 0.031 -0.031 0.036 0.033 0.023 0.002 0.087 -0.082 0.067 0.040 0.130 02/13/02 0.022 0.029 -0.057 0.066 -0.066 0.076 0.035 0.032 0.070 0.110 -0.025 0.062 0.100 0.120 03/13/02 0.024 0.026 0.013 0.031 0.015 0.035 -0.084 0.045 0.000 0.100 -0.056 0.054 0.120 0.130 04/10/02 -0.016 0.032 -0.021 0.052 -0.024 0.060 0.028 0.031 -0.110 0.120 -0.035 0.070 0.050 0.190 04/24/02 -0.029 0.027 -0.011 0.033 -0.013 0.038 -0.005 0.033 -0.030 0.120 -0.045 0.067 0.123 0.089 05/08/02 0.005 0.013 0.006 0.025 0.007 0.029 0.009 0.023 0.033 0.047 0.002 0.027 0.041 0.048 05/22/02 0.004 0.011 0.005 0.021 0.006 0.024 -0.015 0.014 -0.049 0.041 -0.017 0.026 0.046 0.057 06/05/02 0.008 0.021 -0.014 0.064 -0.016 0.073 0.035 0.037 0.035 0.090 0.015 0.043 -0.032 0.071 10/23/02 0.016 0.017 -0.012 0.043 -0.014 0.050 -0.001 0.026 -0.076 0.076 -0.003 0.042 0.061 0.061 11/20/02 0.012 0.029 0.004 0.036 0.005 0.042 -0.008 0.024 -0.043 0.094 0.036 0.054 0.010 0.100 12/11/02 0.021 0.031 0.020 0.097 0.020 0.110 -0.010 0.041 0.070 0.120 -0.039 0.065 0.130 0.140 22 01/16/02 0.030 0.028 0.001 0.034 0.001 0.039 0.006 0.032 -0.070 0.120 -0.082 0.067 0.140 0.140 02/13/02 0.031 0.025 -0.008 0.047 -0.009 0.054 -0.011 0.071 -0.040 0.110 -0.016 0.059 0.140 0.140 03/13/02 0.001 0.019 -0.016 0.028 -0.018 0.032 0O.011 0.044 -0.039 0.084 -0.004 0.044 0.200 0.120 09/05/02 -0.005 0.020 -0.005 0.060 -0.006 0.069 0.002 0.030 -0.007 0.083 0.014 0.047 0.050 0.100 09/25/02 -0.008 0.022 -0.028 0.046 -0.032 0.053 0.018 0.032 -0.010 0.100 0.002 0.051 0.042 0.086 10/09/02 0.014 0.011 -0.008 0.017 -0.009 0.020 0.000 0.011 -0.012 0.038 0.000 0.023 0.105 0.048 10/23/02 0.001 0.013 -0.021 0.031 -0.025 0.036 0.005 0.016 -0.003 0.042 -0.012 0.024 0.010 0.054 11/20/02 -0.006 0,022 -0.005 0.026 -0.006 0.030 -0.058 0.044 0.024 0.092 0.019 0.049 0.090 0.100 12/11/02 -0.002 0.028 -0.076 0.087 -0.090 0.100 0.009 0.036 0.013 0.095 -0.006 0.059 0.110 0.100 24C 01/16/02 0.032 0.027 -0.022 0.031 -0.026 0.035 0.011 0.053 0.016 0.099 0.025 0.053 0.170 0.130 02/13/02 0.007 0.024 0.007 0.050 0.008 0.057 -0.008 0.033 -0.010 0.100 -0.068 0.054 0.170 0.130 03/13/02 0.036 0.018 0.003 0.036 0.004 0.041 0.013 0.024 -0.004 0.083 0.010 0.052 0.080 0.170 04/10/02 0.023 0.025 -0.014 0.031 -0.017 0.036 -0.105 0.043 -0.101 0.099 0.031 0.052 0.102 0.076 10/23/02 0.011 0.008 0.015 0.019 0.017 0.022 -0.005 0.008 0.015 0.024 0.003 0.014 0.010 0.038 11/20/02 -0.001 0.017 0.004 0.020 0.004 0.023 -0.012 0.019 0.014 0.069 0.012 0.037 0.060 0.070 12/11/02 0.020 0.030 -0.062 0.069 -0.072 0.079 -0.022 0.052 0.070 0.130 0.009 0.069 0.000 0.130

SAMPLES TAKEN AS A SUBSTITUTE FOR UNAVAILABLE GOAT MILK 3-34

Dominion Nuclear Connecticut, Inc. Annual Radiological Enironmental Operating Report 2002 Millstone Station TABLE 12 FRUITS & VEGETABLES (PCI/G WET WT.)

COLLECTION LOCATION DATE TYPE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 CO-60 25 06/05/02------- _ _ _ __ _ __ _ _

STRAWBERRIES -0.004 0.033 1.199 0.056 0.003 0.031 -0.001 0. 002 0.000 0. 002 0.004 0. 008 0.000 0. 002 25 06/05/02 LETTUCE 0.089 0.028 2.097 0.065 -0.007 0.035 0.000 0.002 -0.001 0.003 -0.005 0.008 0.002 0.002 06/05/02 0.034 1.427 0.068 -0.023 0.059 0.000 0.003 0.003 0.004 0.001 0.007 0.000 0.005 09/20/02 APPLES 0.030 09/21/02 COLLARD GREENS 0.107 0.083 4.060 0.320 0.045 0.069 -0.005 0.006 -0.005 0.007 0.007 0.019 -0.001 0.010

-0.003 0.003 0.010 0.001 26C 06/05/02 STRAWBERRIES 0.033 0.039 1.245 0.072 0.008 0.043 0.003 0.003 0.001 0.003 06/05/02 LETTUCE -0.008 0.032 2.399 0.078 0.013 0.034 -0.001 0.002 0.001 0.003 0.001 0.009 0.002 0.002 09/20/02 APPLES 0.021 0.026 1.027 0.059 -0.006 0.037 0.002 0.004 -0.003 0.003 0.000 0.008 0.002 0.003 09/21/02 CABBAGE 0.006 0.024 2.074 0.064 0.004 0.034 -0. 001 0.002 -0.001 0.003 0.003 0.006 -0.001 0.002 COLLECTION LOCATION DATE TYPE ZN-65 ZR-95 NB-95 RU-103 RU-106 1-131 CS-134

( / ) - (-- -

25 06/05/02 STRAWBERRIES 0.002 0.004 0.001 0.004 -0.004 0. 005 -0.004 0. 003 -0.005 0.019 0.038 0.033 0.001 0.002 LETTUCE 0.009 0.008 0,000 0.004 -0.003 0.005 0.000 0.003 -0.004 0.019 -0.002 0.035 0.001 0.002 06/05/02 09/20/02 APPLES -0.006 0.010 -0.003 0.008 0.001 0.006 0.000 0.005 -0.001 0.037 0.023 0.033 0.003 0.033 09/21/02 COLLARD GREENS -0.008 0.018 0.003 0.012 0.000 0.010 0.003 0.007 0.012 0.054 0.019 0.044 0.001 0.006 26C 06/05/02 STRAWBERRIES -0.003 0.009 0.002 0.006 -0.003 0.006 0.003 0.004 0.012 0.026 0.022 0.035 -0.003 0.003 06/05/02 LETTUCE 0.000 0.007 0.002 0.005 -0.002 0.004 0.002 0.003 -0.005 0.022 0.018 0.029 -0.001 0.002 09/20/02 APPLES -0.016 0.014 0.004 0.005 0.005 0.004 -0.004 0.004 -0.002 0.025 -0.001 0.028 0.002 0.003 09/21/02 CABBAGE 0.004 0.011 -0.002 0.005 0.005 0.006 -0. 001 0.003 -0. 011 0.022 -0.009 0.025 0.000 0.002 COLLECTION LOCATION DATE TYPE CS-137 BA-140 LA-140 CE-141 CE-144 SB-125 TH-228

-0.001- 0/002 -0.006- 0.010 STRAWBERRIES -0.001 0.002 -0.006 0.010 -0.007 0.012 0.003 0. 006 0.003 0.010 0.000 0. 00 0.011 0.011 25 06/05/02 06/05/02 LETTUCE 0.001 0.002 -0.004 0.011 -0.005 0.013 -0.023 0.008 0.002 0O.011 0.000 0.005 -0.003 0.013 09/20/02 APPLES -0.004 0.003 -0.009 0.014 -0.010 0.016 0.002 0.009 -0.005 0.019 -0.003 0.009 0.014 0.021 09/21/02 COLLARD GREENS 0.006 0-007 -0.005 0.028 -0.006 0.032 0.000 0.008 -0.015 0.022 0.010 0.013 0.016 0.026 26C 06/05/02 STRAWBERRIES 0.000 0.003 -0.006 0.013 -0.007 0.015 -0.019 0.010 -0.013 0.014 0.001 0.007 0.005 0.016 06/05/02 LETTUCE -0.001 0.002 -0.006 0O.011 -0.007 0.012 -0.007 0.008 0. 001 0. 011 -0.004 0.007 0.011 0.012 09/20/02 APPLES -0.001 0.003 -0.014 0.013 -0.016 0.015 0.004 0.008 0.004 0.013 -0.002 0O.011 0.002 0.016 09/21/02 CABBAGE -0.002 0.002 -0.003 0.010 -0.003 0 .011 -0.007 0.008 0.003 0.013 -0.003 0.006 -0.008 0.015 3-35

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 13 BROADLEAF VEGETATION (PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 x-40 CR-51 MN-54 CO-58 FE-59 CO-60 1 05/08/02 0.33 0.16 4.10 0.40 0.05 0.13 0.004 0.013 0.005 0.014 -0.032 0.039 -0.002 0.013 06/24/02 0.24 0.26 2.42 0.54 -0.12 0.29 0.005 0.024 -0.008 0.026 0.017 0.070 0.003 0.020 07/17/02 0.27 0.24 3.29 0. 61 0.08 0.18 0.012 0.021 0.008 0.021 0.046 0.071 -0.004 0.023 08/07/02 0.59 0.17 3.36 0.35 -0.04 0.13 0.003 0.012 0.001 0.013 0.005 0.037 0.003 0.014 09/19/02 1.20 0.37 4.07 0.66 0.04 0.28 -0.012 0.021 0.004 0.026 0.013 0.080 -0.005 0.028 10/28/02 1.72 0.17 2.82 0.34 0.03 0.09 -0.004 0.012 0.005 0.011 0.010 0.024 0.012 0.014 10 05/08/02 0.34 0.20 4.05 0. 60 0.05 0.15 0.009 0.018 -0.001 0.016 -0.014 0.055 -0.013 0.021 06/24/02 0.30 0.14 2.91 0.29 -0.01 0.13 0.003 0.010 -0.005 0.013 0.003 0.033 -0.004 0.010 07/17/02 0.49 0.19 4.70 0.46 -0.01 0.13 0.001 0.014 0.003 0.015 0.007 0.045 0.004 0.014 08/07/02 0.25 0.15 4.73 0.48 -0.01 0.12 -0.001 0.013 -0.012 0.014 0.027 0.050 -0.004 0.015 09/19/02 0.39 0.23 5.71 0.76 0.02 0.19 -0.005 0.021 0.015 0.019 -0.042 0.080 -0.007 0.026 10/28/02 0. 62 0.11 5.00 0.36 -0.03 0.07 -0.002 0.010 0.000 0.010 -0.009 0.022 0.005 0.013 17 05/22/02 1.04 0.29 4.58 0.69 -0.07 0.16 0O.011 0.021 -0.012 0.019 -0.066 0.074 0.022 0.023 06/24/02 0.30 0.23 1.90 0.50 -0.05 0.19 0.021 0.017 0.004 0.021 -0.035 0.061 -0.005 0.020 07/17/02 0.36 0.17 2.31 0.39 -0.16 0.12 -0.002 0.014 -0.002 0.013 0.008 0.048 0.005 0.015 08/07/02 0.74 0.17 2.76 0.34 -0.02 0.13 -0.001 0.012 -0.011 0.013 -0.018 0.047 -0.008 0.014 09/19/02 0.61 0.20 2.30 0.34 -0.08 0.14 -0.008 0.013 -0.010 0.013 0.047 0.050 0.003 0.015 10/28/02 0.72 0.23 4.83 0.64 0.04 0.16 -0.009 0.020 0.014 0.016 -0.021 0.045 -0.001 0.024 3-36

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 13 BROADLEAF VEGETATION (PCI/G WET WT.)

COLLECTION LOCATION DATE ZN-65 ZR-95 NB-95 RU-103 RU-106 I-131 CS-134 1 05/08/02 -0.020 0.032 -0.002 0.023 0.013 0.015 -0.009 0.014 -0.12 0.13 0.003 0.014 -0.002 0.015 06/24/02 -0.045 0.056 0.001 0.042 0.009 0.034 0.000 0.029 0.01 0.21 0.015 0.022 0.009 0.024 07/17/02 -0.016 0.049 -0.007 0.033 -0.005 0.024 -0.014 0.020 0.01 0.20 0.023 0.029 0.022 0.022 08/07/02 0.039 0.050 0.000 0.021 -0.006 0.017 -0.001 0.013 0.02 0.10 -0.005 0.018 0.009 0.012 09/19/02 -0.091 0.070 0.027 0.047 0.010 0.035 0.017 0.026 -0.02 0.24 0.002 0.031 0.029 0.027 10/28/02 -0.025 0.033 -0.004 0.019 -0.006 0.012 0.012 0 .011 -0.01 0.11 0.015 0.032 0.007 0.011 10 05/08/02 -0.026 0.046 0.007 0.035 -0.008 0.022 0.013 0.017 0.04 0.15 0.011 0.027 0.001 0.018 06/24/02 -0.005 0.039 -0.010 0.020 0.012 0.023 0.007 0.013 0.01 0.10 0.002 0.016 0.006 0O.011 07/17/02 0.051 0.063 0.004 0.025 -0.019 0.018 0.002 0.015 0.08 0.13 0.031 0.029 0.003 0.016 08/07/02 0.055 0.066 -0.001 0.023 0.012 0.028 0O.011 0.013 0.05 0.11 0.007 0.025 0.008 0.012 09/19/02 -0.059 0.051 -0.018 0.038 -0.019 0.027 -0.001 0.019 0.09 0.17 0.008 0.029 -0.014 0.016 10/28/02 -0.017 0.031 0.003 0.016 0.007 0.010 0.000 0.008 -0.04 0.09 0.001 0.015 0.004 0.009 17 05/22/02 -0.052 0.049 -0.007 0.031 0.000 0.023 -0.005 0.019 0.11 0.17 0.025 0.033 -0.002 0.020 06/24/02 -0.063 0.053 -0.019 0.036 -0.012 0.026 0.005 0.020 0.11 0.16 0.008 0.018 0.016 0.020 07/17/02 -0.038 0.031 -0.005 0.022 -0.002 0.016 -0.001 0.012 0.02 0.13 0.035 0.034 -0.008 0.014 08/07/02 0.041 0.062 -0.009 0.023 0.001 0.027 0.003 0.013 0.02 0.10 0.005 0.020 0.010 0.013 09/19/02 -0.013 0.050 0.012 0.025 0.001 0.019 -0.003 0.014 -0.05 0.12 0.022 0.035 0.006 0.014 10/28/02 -0.009 0.051 0.004 0.033 0.003 0,022 0.000 0.017 -0.09 0.16 0.026 0.036 -0.003 0.020 3-37

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Repoit 2002 Millstone Station TABLE 13 BROADLEAF VEGETATION (PCI/G WET WT.)

COLLECTION LOCATION DATE CS-137 BA-140 LA-140 CE-141 CE-144 SB-125 TH-228 1 05/08/02 0.010 0.014 0.008 0.024 0.009 0.028 0.007 0.031 0.001 0.060 0.004 0.032 0.071 0.063 06/24/02 -0.009 0.023 -0.015 0.077 -0.017 0.089 -0.007 0.038 -0.030 0.110 0.003 0.052 0.040 0.080 07/17/02 0.015 0.024 0.000 0.030 0.000 0.035 0.009 0.022 -0.025 0.077 0.043 0.052 0.150 0.120 08/07/02 0.001 0.011 -0.009 0.029 -0.010 0.034 -0.053 0.030 0.001 0.054 0.007 0.027 0.057 0.049 09/19/02 -0.019 0.026 -0.054 0.084 -0.062 0.096 -0.056 0.041 0.010 0.110 0.058 0.062 0.130 0.120 10/28/02 -0.010 0.011 -0.019 0.022 -0.022 0.025 0.014 0.012 -0.055 0.043 -0.013 0.025 0.134 0.052 10 05/08/02 -0.004 0.017 0.019 0.044 0.022 0.051 -0.011 0.024 -0.016 0.063 0.019 0.038 0.095 0.071 06/24/02 0.008 0.011 -0.004 0.038 -0.005 0.044 -0.020 0.030 -0.016 0.049 0.005 0.024 0.000 0.048 07/17/02 0.009 0.017 -0.011 0.024 -0.012 0.028 0.008 0.020 -0.026 0.066 0.006 0.036 0.053 0.066 08/07/02 0.001 0.015 -0.010 0.038 -0.011 0.043 -0.023 0.017 -0.023 0.047 0.003 0.030 -0.027 0.052 09/19/02 -0.010 0.021 0.014 0.051 0.016 0.058 0.015 0.023 0.015 0.069 0.011 0.037 0.012 0.082 10/28/02 0.009 0.011 -0.006 0.016 -0.007 0.019 -0.006 0.010 0.004 0.034 0.027 0.021 -0.002 0.046 17 05/22/02 0.016 0.022 -0.016 0.052 -0.019 0.059 -0.003 0.023 -0.048 0.080 0.016 0.050 0.018 0.085 06/24/02 0.008 0.016 -0.007 0.068 -0.009 0.079 0.000 0.025 -0.013 0.073 0.037 0.038 0.017 0.074 07/17/02 0.013 0.016 -0.005 0.025 -0.006 0.029 -0.001 0.015 0.046 0.054 0.020 0.031 0.000 0.057 08/07/02 0.067 0.018 0.013 0.038 0.015 0.043 -0.005 0.018 -0.020 0.045 -0.010 0.029 -0.031 0.051 09/19/02 0.002 0.013 0.034 0.043 0.039 0.049 -0.001 0.018 0.034 0.052 -0.012 0.030 0.025 0.060 10/28/02 -0.003 0.019 -0.023 0.044 -0.027 0.050 0.000 0.022 0.015 0.068 -0.014 0.041 0.057 0.087 3-38

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 14 SEA WATER (PCI/L)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 CO-60

( / ) ( / ) ( / ) ( / ) ( / ) ( / )

32 01/29/02 -3 23 282 72 5 27 -1.7 2.6 2.1 2.6 -5.0 6.6 -1.1 2.9 02/27/02 -5 16 367 60 9 21 0.0 2.0 1.5 2.0 -0.8 5.3 1.2 2.0 03/27/02 10 14 317 52 11 18 -0.8 1.8 1.3 1.6 1.6 4.2 2.2 1.8 04/30/02 -9 18 344 65 -2 22 -1.2 2.6 1.1 2.0 0.0 7.8 0.8 2.8 05/28/02 0 20 222 58 2 28 1.1 2.4 0.5 2.4 -3.7 8.5 0.8 2.6 06/26/02 -23 25 335 81 6 25 -3.3 2.8 0.6 3.1 -3.0 8.3 -0.4 3.4 07/30/02 6 16 249 50 -4 20 0.8 1.8 0.1 1.8 -2.9 4.0 0.3 2.4 08/27/02 -5 18 305 50 -5 23 -1.3 1.4 0.1 1.9 -1.3 6.7 -0.7 2.0 09/24/02 1 21 284 59 -11 23 -0.2 2.4 0.0 2.1 -0.8 4.7 1.0 2.2 10/29/02 -4 17 289 58 -3 20 0.1 2.1 0.1 1.9 0.8 4.9 0.0 2.2 11/26/02 -6 18 373 63 11 19 0.4 2.0 0.1 1.9 -4.1 4.4 0.6 2.2 12/31/02 13 19 299 58 -1 25 1.0 1.9 0.6 2.3 2.0 5.5 0.6 2.4 35X 03/05/02 -22 26 276 64 -9 23 1.1 2.7 2.1 2.6 0.0 7.1 -0.5 3.1 05/23/02 15 26 266 70 -1 27 0.9 2.3 -1.5 2.6 3.1 8.0 -0.8 2.9 08/13/02 -7 17 298 53 2 19 0.3 1.6 -0.5 1.9 -3.0 5.8 2.7 2.2 12/10/02 -7 18 312 61 -14 20 -0.6 2.1 0.7 2.3 0.7 5.2 -1.9 2.6 37C 02/19/02 -16 19 282 56 10 25 1.9 2.1 -1.1 2.4 -2.2 6.3 0.3 1.9 05/28/02 1 18 270 52 7 26 0.6 2.5 0.0 2.4 -7.2 6.2 0.1 1.8 08/27/02 -1 16 308 43 -7 20 -1.0 1.6 -0.1 1.5 0 6 -0.2 2.0 11/26/02 3 18 269 51 -5 20 -0.7 2.0 -1.0 1.9 -2 5 0.7 2.3 39X 03/05/02 -14 24 334 81 9 25 0.0 2.9 0.9 2.4 1.8 8.1 1.7 3.5 05/23/02 -14 21 360 74 3 28 1.0 2.9 -1.9 2.5 -1.1 7.8 0.0 2.3 08/13/02 10 17 307 61 -21 21 0.8 1.7 -0.8 2.0 2 4 0.5 1.8 12/10/02 -6 17 285 60 -2 21 0.5 2.0 0.2 2.1 1.7 4.6 0.9 2.5 3-39

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 14 SEA WATER (PCI/L)

COLLECTION LOCATION DATE ZN-65 ZR-95 NB-95 RU-103 RU-106 1-131 CS-134

(+/ ) (+/ -) ( / ) (+/-)

32 01/29/02 -7.7 6.3 -1.8 4.6 0.2 2.8 -0.3 3.1 -6 22 -0.6 5.0 0.7 2.8 02/27/02 1.4 4.9 2.6 3.7 0.6 2.0 0.5 2.1 10 20 -2.6 3.8 -1.5 2.1 03/27/02 -2.3 3.9 3.9 2.9 1.7 1.9 -1.8 2.0 -5 18 -1.2 3.7 0.2 1.8 04/30/02 -1.7 4.5 -0.1 3.8 -0.7 2.5 0.2 2.7 -3 19 4.0 5.4 0.5 2.4 05/28/02 -3.4 6.2 2.0 4.5 -1.5 3.1 -1.9 2.8 -2 25 -5.4 6.7 -0.8 2.6 06/26/02 -2.5 6.2 -1.9 5.4 -2.1 3.7 -2.4 3.2 12 24 0.4 6.2 -0.2 3.1 07/30/02 0.0 5.1 -0.4 3.5 0.7 2.4 -0.6 2.2 -7 15 1.3 4.2 -0.4 1.9 08/27/02 -3.2 4.6 -1.0 3.3 -1.7 2.4 -2.4 2.2 7 15 -5.7 9.7 0.3 1.8 09/24/02 -4.1 5.3 -0.6 3.8 1.1 2.5 -0.3 2.4 -9 19 0.0 4.9 -0.7 1.8 10/29/02 -0.4 4.7 0.7 3.6 1.8 1.9 -2.9 2.2 3 19 -2.0 4.1 -0.4 1.9 11/26/02 7.8 9.2 -0.1 3.3 -1.7 2.2 -1.8 2.1 17 17 0.6 4.3 0.8 2.1 12/31/02 1.2 4.9 -0.4 4.1 -1.1 2.3 -1.7 2.2 -5 19 0.0 6.7 1.4 2.1 35X 03/05/02 -1.1 5.6 -3.2 4.6 1.7 3.1 -2.6 2.8 -9 20 1.8 4.5 -1.1 2.6 05/23/02 2.4 6.0 2.7 5.0 0.2 3.4 -1.1 3.4 -5 23 -3.2 8.0 0.7 2.7 08/13/02 0.0 5.0 -1.3 3.2 3.1 2.4 -1.6 1.9 -16 18 -2.2 4.4 1.0 1.8 12/10/02 -7.2 6.2 0.1 3.4 -0.2 2.5 -1.5 2.5 19 21 2.7 3.9 1.6 2.2 37C 02/19/02 -3.0 5.4 1.4 3.7 -0.4 2.6 0.0 2.4 1 17 -4.7 8.5 1.4 2.4 05/28/02 -3.7 4.5 -1.8 3.9 0.0 2.8 -1.0 2.4 -26 20 0.6 7.2 0.2 2.4 08/27/02 -3.6 3.6 -0.6 2.6 -0.5 2.1 -0.9 2.0 8 15 -1.9 8.0 -0.7 1.5 11/26/02 3.7 3.8 -2.4 3.1 1.3 2.3 1.0 2.1 15 19 3.3 3.9 -0.3 2.1 39X 03/05/02 -2.4 7.0 0.9 4.5 -0.4 3.3 -0.4 2.6 4 30 1.8 5.6 -0.8 2.5 05/23/02 3.5 5.2 -5.1 4.0 -0.4 3.0 0.5 2.8 -17 24 -3.6 8.3 1.3 2.9 08/13/02 -1.5 4.6 0.2 3.4 0.1 2.4 0.0 2.5 -1 20 1.3 4.6 -1.7 2.1 12/10/02 0.2 4.7 -2.5 3.5 -0.9 2.4 -0.6 1.9 9 17 1.6 4.4 1.3 2.2 3-40

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 14 SEA WATER (PCI/L)

COLLECTION LOCATION DATE CS-137 BA-140 LA-140 SB-125 TH-228 H-3 32 01/29/02 1.0 2.9 1.5 4.0 1.7 4.6 -0.3 6.6 2.0 11.0 860 790 02/27/02 -0.2 2.3 0.0 3.3 0.0 3.7 -0.3 5.4 1.8 7.2 330 900 03/27/02 0.1 2.0 -1.9 2.9 -2.2 3.3 4.8 4.8 3.8 6.8 200 680 04/30/02 -0.4 2.5 -1.7 3.8 -2.0 4.4 6.0 5.9 2.2 9.8 960 940 05/28/02 -2.8 2.7 4.3 5.6 4.9 6.4 2.2 6.7 5.0 12.0 -40 850 06/26/02 1.0 2.6 -1.4 5.0 -1.7 5.7 -2.9 6.0 4.0 11.0 440 870 07/30/02 0.4 2.1 0.5 2.4 0.6 2.7 4.2 5.2 4.6 7.5 620 840 08/27/02 -0.5 2.0 1.3 3.9 1.5 4.5 2.2 4.3 2.5 7.2 500 860 09/24/02 -1.1 2.3 1.2 3.7 1.3 4.2 0.4 5.7 -6.7 8.7 600 1100 10/29/02 -0.9 2.3 -0.7 2.9 -0.8 3.3 1.3 5.7 1.1 7.7 -200 780 11/26/02 -1.8 2.1 -0.9 3.0 -1.1 3.4 2.0 5.5 6.5 7.7 760 870 12/31/02 -0.6 2.0 -0.5 3.8 -0.5 4.3 -5.0 5.4 -0.6 8.0 360 830 35X 03/05/02 -0.7 2.7 1.6 4.5 1.9 5.1 1.0 6.9 7.0 11.0 -30 620 05/23/02 -1.0 2.6 0.0 6.0 0.0 6.9 0.4 7.2 4.0 11.0 -540 840 08/13/02 1.7 2.1 0.9 2.6 1.0 3.0 2.0 5.9 4.6 7.4 260 800 12/10/02 0.3 2.3 0.3 2.1 0.4 2.4 -0.3 5.4 1.6 8.9 170 890 37C 02/19/02 0.8 2.3 1.4 4.1 1.6 4.8 1.8 5.5 2.7 8.3 -30 890 05/28/02 0.1 2.0 -1.7 4.4 -1.9 5.1 -0.9 5.7 0.6 7.3 -490 830 08/27/02 0.1 1.6 2.4 4.6 2.8 5.3 2.4 4.1 -2.3 5.6 120 840 11/26/02 0.8 2.0 0.3 3.3 0.3 3.7 0.6 5.0 -8.2 6.9 290 870 39X 03/05/02 -0.2 3.4 -2.8 4.4 -3.2 5.0 3.3 7.0 11.0 12.0 -280 600 05/23/02 -1.0 2.4 -7.6 4.7 -8.7 5.5 0.8 6.6 4.0 10.0 -440 840 08/13/02 0.2 2.3 -1.6 2.6 -1.8 2.9 -3.0 5.5 -1.9 7.6 -90 810 12/10/02 -0.5 2.4 -0.7 2.6 -0.8 3.0 -1.4 5.8 0.3 7.9 1030 930 3-41

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 15 BOTTOM SEDIMENT (PCI/G DRY WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 31 04/17/02 0.05 0.32 12.39 0.97 0.24 0.41 0.04 0.04 0.02 0.03 0.07 0.09 08/15/02 0.25 0.36 13.93 0.78 -0.31 0.61 0.00 0.04 -0.03 0.03 -0.03 0.10 32 03/07/02 0.00 0.39 13.00 1.60 0.12 0.48 0.05 0.04 -0.04 0.04 -0.07 0.12 06/17/02 -0.19 0.35 13.90 1.20 -0.03 0.52 -0.01 0.04 -0.01 0.04 0.00 0.12 08/27/02 0.13 0.53 13.30 2.00 -0.19 0.68 0.01 0.05 0.02 0.06 -0.06 0.18 12/17/02 -0.01 0.13 12.29 0.66 0.19 0.16 0.01 0.02 -0.02 0.01 -0.01 0.03 33 04/16/02 -0.22 0.26 21.30 1.50 0.03 0.30 0.00 0.03 0.02 0.03 0.01 0.10 08/14/02 0.01 0.16 20.40 1.20 0.12 0.16 0.01 0.02 0.01 0.02 0.06 0.08 34 04/16/02 0.07 0.24 18.60 1.20 0.21 0.25 -0.01 0.02 0.00 0.03 -0.02 0.09 08/14/02 -0.03 0.13 22.10 1.20 0.09 0.16 0.01 0.02 0.01 0.02 -0.01 0.07 35X 01/28/02 0.02 0.49 13.20 1.30 -0.32 0.69 -0.03 0.05 0.01 0.05 -0.01 0.12 06/17/02 0.02 0.45 10.80 1.20 0.29 0.67 0.05 0.04 -0.05 0.05 0.05 0.16 08/22/02 0.00 0.24 11.85 0.56 -0.30 0.36 -0.02 0.02 0.00 0.02 -0.05 0.07 10/15/02 0.21 0.29 11.06 0.84 0.03 0.37 -0.01 0.03 0.01 0.03 -0.06 0.06 36X 04/17/02 -0.12 0.21 15.90 1.40 -0.07 0.29 0.03 0.04 0.00 0.03 0.00 0.11 08/15/02 0.07 0.26 15.90 1.20 0.05 0.43 0.01 0.03 0.00 0.03 0.07 0.12 37C 04/17/02 0.10 0.21 15.10 1.30 0.22 0.28 0.00 0.03 0.00 0.03 0.01 0.09 08/14/02 0.05 0.16 14.19 0.74 -0.23 0.25 -0.01 0.02 -0.01 0.02 -0.01 0.07 39X 03/07/02 0.28 0.37 14.00 1.60 -0.05 0.47 0.01 0.04 -0.01 0.04 -0.05 0.12 06/17/02 0.29 0.32 15.00 1.10 0.08 0.47 0.04 0.03 -0.03 0.03 -0.06 0.11 08/27/02 -0.02 0.22 14.51 0.85 -0.16 0.32 0.00 0.02 -0.02 0.02 0.04 0.08 12/17/02 0.04 0.24 14.75 0.94 -0.03 0.29 0.01 0.03 -0.02 0.03 -0.04 0.06 67X 04/16/02 -0.07 0.28 15.80 1.50 -0.30 0.39 -0.01 0.04 0.01 0.03 0.06 0.12 08/14/02 0.15 0.18 13.39 0.91 0.02 0.20 -0.02 0.02 0.00 0.02 0.00 0.07 3-42

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 15 BOTTOM SEDIMENT (PCI/G DRY WT.)

COLLECTION LOCATION DATE CO-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 (1-) (/ -) (/ -) (+/-) (+-)

31 04/17/02 -0.02 0.03 -0.04 0.14 0.09 0.07 -0.01 0.04 0.00 0.04 0.31 0.36 08/15/02 0.00 0.03 -0.01 0.11 -0.02 0.08 0.02 0.08 0.01 0.05 0.18 0.27 32 03/07/02 -0.01 0.03 -0.13 0.11 -0.05 0.08 0.00 0.06 0.00 0.05 -0.11 0.40 06/17/02 0.06 0.04 0.12 0.15 0.00 0.08 -0.05 0.06 0.02 0.05 0.10 0.27 08/27/02 0.01 0.06 -0.12 0.16 0.05 0.10 0.06 0.08 0.07 0.06 -0.14 0.47 12/17/02 0.02 0.02 0.04 0.07 -0.04 0.06 -0.01 0.02 0.00 0.02 0.04 0.14 33 04/16/02 -0.01 0.03 0.14 0.15 -0.03 0.05 -0.02 0.04 -0.01 0.03 0.01 0.29 08/14/02 0.02 0.02 -0.03 0.11 0.01 0.03 -0.01 0.02 0.00 0.02 0.04 0.16 34 04/16/02 0.00 0.03 0.13 0.11 -0.01 0.04 0.01 0.03 0.03 0.03 0.10 0.23 08/14/02 0.00 0.02 -0.05 0.06 0.00 0.03 -0.01 0.02 0.01 0.02 -0.03 0.16 35X 01/28/02 0.01 0. 03 0.10 0.15 0.05 0.10 0.06 0.07 -0.01 0.06 0.11 0.40 06/17/02 0.01 0.04 -0.01 0.18 0.10 0.10 0.04 0.07 -0.01 0.06 -0.31 0.39 08/22/02 0.00 0.02 -0.07 0.08 0.00 0.06 -0.19 0.06 -0.02 0.03 -0.02 0.20 10/15/02 0.00 0.03 -0.04 0.11 0.02 0.06 0.00 0.04 -0.01 0.04 -0.20 0.27 36X 04/17/02 -0.01 0.03 -0.06 0.08 0.07 0.06 -0.03 0.04 0.00 0.03 0.11 0.28 08/15/02 0.01 0.03 -0.02 0.07 0.02 0.06 -0.02 0.05 -0.02 0.04 -0.16 0.25 37C 04/17/02 -0.01 0.03 -0.01 0.07 0.00 0.05 -0.01 0.03 -0.03 0.03 -0.15 0.25 08/14/02 0.00 0.01 -0.04 0.08 0.01 0.03 -0.01 0.03 0.01 0.02 0.01 0.12 39X 03/07/02 0.05 0.04 -0.11 0.20 -0.05 0.07 0.02 0.06 -0.02 0.04 0.18 0.35 06/17/02 0.02 0.03 -0.05 0.14 0.01 0.06 0.00 0.07 -0.03 0.04 -0.06 0.26 08/27/02 -0.02 0.02 -0.04 0.10 0.03 0.04 -0.04 0.05 -0.01 0.03 -0.11 0.22 12/17/02 -0.01 0.03 -0.04 0.11 0.01 0.05 0.03 0.05 0.02 0.03 -0.17 0.21 67X 04/16/02 0.00 0.04 0.07 0.16 0.07 0.07 0.02 0.07 0.01 0.04 -0.01 0.36 08/14/02 0.00 0.02 -0.09 0.06 0.01 0.04 0.01 0.02 0.01 0.02 -0.05 0.19 3-43

Dominion Nuclear Connecticut, Inc. Annual Radiological Envirnmental Operating Report 2002 Millstone Station TABLE 15 BOTTOM SEDIMENT (PCI/G DRY WT.)

COLLECTION LOCATION DATE AG-1lOM 1-131 CS-134 CS-137 SB-125 TH-228

(+-)

31 04/17/02 0.01 0.04 0.05 0.11 0.01 0.04 0.00 0.04 0.01 0.10 4.15 0.19 08/15/02 0.00 0.04 -0.29 0.60 0.01 0.03 0.01 0.03 0.03 0.08 3.49 0.13 32 03/07/02 -0.03 0.07 0.02 0.13 0.02 0.06 -0.04 0.05 0.04 0.11 0.82 0.21 06/17/02 -0.04 0.05 -0.01 0.38 0.00 0.03 0.03 0.03 -0.07 0.08 0.90 0.14 08/27/02 0.02 0.06 -0.08 0.26 0.05 0.08 -0.02 0.05 -0.03 0.13 0.75 0.33 12/17/02 0.00 0.02 0.01 0.04 0.02 0.05 0.02 0.02 0.03 0.04 0.62 0.07 33 04/16/02 -0.04 0.04 0.02 0.09 -0.02 0.03 0.01 0.03 0.10 0.08 -0.12 0.23 08/14/02 0.00 0.03 0.00 0.04 0.01 0.02 0.01 0.02 -0.01 0.04 0.34 0.10 34 04/16/02 0.04 0.04 0.02 0.07 0.00 0.02 0.00 0.03 0.03 0.06 0.19 0.12 08/14/02 -0.02 0.03 0.02 0.03 -0.02 0.02 0.01 0.02 0.02 0.04 0.18 0.08 35X 01/28/02 -0.02 0.06 0.04 0.46 -0.01 0.04 0.00 0.04 -0.05 0.11 1.66 0.18 06/17/02 -0.04 0.05 0.11 0.51 -0.01 0.04 -0.02 0.05 0.04 0.10 2.93 0.20 08/22/02 0.00 0.02 -0.15 0.25 -0.01 0.02 0.00 0.02 0.03 0.06 3.80 0.10 10/15/02 0.02 0.04 -0.10 0.12 -0.03 0.04 0.01 0.03 0.00 0.08 2.16 0.14 36X 04/17/02 0.01 0.05 0.00 0.07 0.02 0.04 0.00 0.04 0.00 0.07 0.48 0.12 08/15/02 0.02 0.04 0.41 0.47 0.00 0.02 0.00 0.03 0.03 0.06 0.42 0.10 37C 04/17/02 0.02 0.04 0.00 0.07 0.01 0.03 -0.02 0.03 -0.04 0.07 0.48 0.13 08/14/02 0.00 0.02 -0.10 0.27 0.00 0.01 0.00 0.02 0.00 0.03 0.41 0.06 39X 03/07/02 0.04 0.05 0.10 0.14 0.05 0.05 0.04 0.06 0.06 0.10 0.88 0.19 06/17/02 -0.01 0.04 -0.10 0.36 0.00 0.03 0.05 0.04 0.02 0.08 1.06 0.13 08/27/02 -0.01 0.03 0.04 0.16 0.00 0.02 0.06 0.04 0.03 0.06 1.02 0.10 12/17/02 -0.01 0.04 -0.01 0.07 -0.01 0.04 0.02 0.03 0.01 0.06 1.04 0.11 67X 04/16/02 0.00 0.05 0.06 0.12 -0.01 0.04 0.22 0.06 -0.08 0.10 0.94 0.17 08/14/02 -0.01 0.03 -0.03 0.05 0.00 0.02 0.08 0.03 -0.02 0.05 0.35 0.08 3-44

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Repott 2002 Millstone Station TABLE 16 AQUATIC FLO.A-FUCUS (PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 32X 02/28/02 0.089 0.071 5.46 0.52 -0.054 0.089 0.003 0.010 -0.001 0.011 0.008 0.035 05/23/02 -0.030 0.110 6.83 0.71 -0.060 0.140 0.007 0.014 0.011 0.017 0.040 0.059 08/13/02 0.043 0.068 6,91 0.47 -0.018 0.076 0.000 0.008 0.011 0.009 0.018 0.027 12/10/02 0. 048 0.091 7.87 0.52 -0.040 0.110 0.001 0.010 0.008 0.011 -0.003 0.032 33X 04/16/02 0.064 0.061 4.80 0.27 0.043 0.055 -0.003 0.006 -0.001 0.006 0.014 0.021 08/14/02 0.031 0.062 6.14 0.43 -0.071 0.061 -0.008 0.007 -0.008 0.008 0.008 0.020 35X 03/05/02 0.101 0.084 5.07 0.51 0.000 0.067 -0.003 0.009 -0.001 0.010 -0.017 0.029 05/23/02 0.076 0.081 4.84 0.56 0.000 0.099 -0.009 0.012 -0.001 0.012 -0.005 0.035 08/13/02 -0.013 0.084 5.48 0.53 0.035 0.096 -0.001 0.011 -0.006 0.009 -0.019 0.028 12/10/02 0.079 0.094 6.04 0.46 0.020 0 .110 -0.005 0.011 -0.001 0.011 -0.013 0.029 36X 04/17/02 0.028 0.042 4.86 0.29 -0.020 0.044 -0.003 0.006 0.002 0.006 -0.002 0.019 08/15/02 -0.014 0.079 5.30 0.39 -0.030 0.140 0.004 0.009 0.006 0.010 0.002 0.040 39X 03/05/02 0.120 0.110 7.37 0.73 0.069 0.091 -0.002 0.012 -0.002 0.010 -0.013 0.033 05/23/02 -0.030 0.140 4.61 0.77 0.050 0.150 -0.002 0.017 0.000 0.015 0.004 0.054 08/13/02 -0.002 0.064 5.32 0.49 0.016 0.082 0.003 0.010 -0.001 0.010 0.016 0.023 12/10/02 -0.012 0.099 7.57 0.52 -0.020 0.110 0.006 0.012 -0.001 0.012 0.013 0.031 3-45

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 16 AQUATIC FLORA-FUCUS (PCI/G WET WT.)

COLLECTION LOCATION DATE Co-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 32X 02/28/02 -0.005 0.010 0.010 0.024 0.016 0.017 -0.004 0.013 -0.004 0.010 -0.001 0.082 05/23/02 0.001 0.014 -0.013 0.038 0.010 0.021 0.012 0.019 0.021 0.016 0.030 0 .110 08/13/02 -0.004 0.008 -0.018 0.025 0.006 0.014 0.003 0.010 -0.015 0.008 0.009 0.071 12/10/02 0.010 0.017 -0.014 0.029 0.000 0.020 0.000 0.013 0.005 0.011 -0.047 0.096 33X 04/16/02 0.001 0.006 0.013 0.025 -0.001 0.011 -0.001 0.007 -0.001 0.006 -0.002 0.049 08/14/02 0.007 0.009 -0.005 0.033 0.010 0.014 -0.002 0.008 -0.004 0.006 -0.042 0.068 35X 03/05/02 -0.002 0.008 -0.004 0.029 -0.007 0.014 -0.004 0.010 0.000 0.008 -0.030 0.091 05/23/02 0.005 0O.011 -0.023 0.033 0.006 0.017 -0.002 0.013 0.003 0.010 0.083 0.099 08/13/02 0.003 0.012 -0.004 0.032 0.004 0.019 -0.007 0O.011 -0.002 0.008 -0.100 0.100 12/10/02 0.002 0.015 -0.017 0.030 0.008 0.020 -0.005 0.014 -0.003 0.012 -0.049 0.092 36X 04/17/02 -0.002 0.006 0.022 0.030 -0.001 0.009 -0.002 0.007 0.003 0.005 0.001 0.042 08/15/02 0.008 0.012 -0.029 0.023 -0.015 0.020 0.006 0.018 -0.003 0.012 -0.016 0.064 39X 03/05/02 0.004 0.014 -0.046 0.035 0.004 0.021 0.008 0.014 0.002 0.012 -0.046 0.087 05/23/02 0.001 0.019 -0.014 0.048 0.000 0.026 -0.015 0.023 -0.009 0.014 -0.050 0.130 08/13/02 0.002 0.007 -0.011 0.050 0.008 0.016 0.000 0.010 -0.003 0.008 0.069 0.079 12/10/02 -0.005 0.016 0.030 0.057 0.003 0.020 0.001 0.015 -0.004 0.012 0.037 0.098 3-46

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 16 AQUATIC FLORA-FUCUS (PCI/G WET WT.)

COLLECTION LOCATION DATE AG-110M 1-131 CS-134 CS-137 SB-125 TH-228 32X 02/28/02 -0.005 0.012 0.032 0.039 0.010 0.012 0.002 0.010 0.004 0.023 0.041 0.046 05/23/02 -0.004 0.020 0.031 0.076 0.009 0.016 -0.004 0.013 0.003 0.030 0.016 0.060 08/13/02 0.002 0.012 0.002 0.019 0.001 0.010 0.004 0.008 0.011 0.020 0.066 0.035 12/10/02 0.007 0.016 -0.014 0.047 0.007 0.011 -0.004 0.011 -0.007 0.021 0.058 0.062 33X 04/16/02 0.001 0.008 0.018 0.015 0.009 0.006 0.003 0.006 0.005 0.012 0.039 0.030 08/14/02 0.005 0.010 -0.013 0.015 -0.002 0.008 0.002 0.008 0.008 0.018 0.033 0.023 35X 03/05/02 0.004 0.013 0.018 0.019 -0.005 0.009 0.001 0.009 0.006 0.020 -0.018 0.047 05/23/02 -0.002 0.011 0.016 0.045 0.008 0.010 0.003 0.010 0.008 0.021 0.038 0.047 08/13/02 0.000 0.013 -0.006 0.019 0.000 0.010 0.010 0.011 0.019 0.020 0.032 0.038 12/10/02 -0 .001 0.015 -0.008 0.045 -0.002 0.012 0.002 0.010 -0.010 0.023 0.090 0.044 36X 04/17/02 0.001 0.009 0.016 0.013 0.005 0.006 0.003 0.006 -0.009 0.011 0.038 0.029 08/15/02 -0.002 0.012 0.260 0.450 0.003 0.007 0.003 0.008 -0.005 0.015 0.044 0.031 39X 03/05/02 -0.011 0.018 0.022 0.026 0.004 0.010 -0.001 0.013 -0.013 0.028 0.039 0.057 05/23/02 -0.008 0.019 0.030 0.057 -0.003 0.016 -0.007 0.013 0.016 0.030 0.010 0.060 08/13/02 0.000 0.013 0.011 0.018 -0.004 0.009 -0.007 0.011 -0.015 0.024 0.034 0.039 12/10/02 -0.002 0.015 0.020 0.047 0.002 0.011 -0.006 0.010 0.002 0.023 0.072 0.048 3-47

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 17A FISH-FLOUNDER (PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 32 02/27/02 0.01 0.15 3.2 0.5 -0.06 0.20 -0.007 0.012 0.000 0.012 0.019 0.045 05/07/02 0.06 0.24 4.0 0.8 -0.12 0.36 0.011 0.029 0.006 0.030 0.024 0.096 07/15/02 0.16 0.22 4.1 0.5 0.10 0.45 -0.006 0.017 0.017 0.027 -0.051 0.087 11/05/02 -0.19 0.20 4.0 0.6 -0.05 0.24 -0.004 0.050 -0.028 0.018 -0.007 0.049 35 03/27/02 -0.08 0.18 3.7 0.8 0.05 0.20 -0.003 0.030 0.010 0.021 0.000 0.076 04/23/02 0.15 0.14 3.5 0.6 -0.05 0.17 -0.003 0.018 -0.002 0.017 0.013 0.052 07/15/02 0.04 0.22 3.7 0.6 0.17 0.42 0.010 0.019 0.013 0.025 -0.010 0.120 11/04/02 -0.10 0.14 3.9 0.5 -0.04 0.17 -0.006 0.015 0.004 0.018 -0.012 0.043 COLLECTION LOCATION DATE CO-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 32 02/27/02 -0.004 0.017 -0.014 0.041 0.009 0.031 0.007 0.018 0.001 0.020 0.09 0.15 05/07/02 -0.010 0.026 -0.033 0.063 0.021 0.052 0.005 0.037 -0.006 0.033 -0.16 0.21 07/15/02 -0.002 0.017 -0.046 0.046 -0.019 0.042 -0.026 0.039 -0.033 0.033 0.02 0.14 11/05/02 -0.008 0.021 -0.050 0.051 0.020 0.039 -0.004 0.026 0.001 0.022 0.04 0.18 35 03/27/02 0.007 0.023 0.035 0.057 0.000 0.045 0.000 0.025 -0.004 0.022 -0.13 0.19 04/23/02 0.010 0.020 -0.056 0.047 0.007 0.033 -0.017 0.018 0.001 0.017 0.07 0.16 07/15/02 0.000 0.019 0.013 0.045 0.025 0.041 -0.027 0.040 -0.031 0.035 0.00 0.16 11/04/02 -0.006 0.019 -0.033 0.040 -0.006 0.026 0.001 0.019 -0.002 0.018 -0.19 0.14 COLLECTION LOCATION DATE AG-110M 1-131 CS-134 CS-137 SB-125 TH-228 32 02/27/02 0.006 0.022 -0.02 0.07 -0.010 0.016 -0.004 0.017 0.017 0.038 -0.007 0.053 05/07/02 -0.001 0.035 0.00 0.26 -0.004 0.029 0.002 0.028 -0.041 0.056 -0.010 0.110 07/15/02 0.008 0.024 -0.50 1.70 -0.007 0.018 -0.013 0.015 0.032 0.038 0.033 0.056 11/05/02 -0.014 0.027 0.05 0.08 -0.007 0.021 0.007 0.019 0.000 0.046 -0.024 0.076 35 03/27/02 -0.004 0.030 0.04 0.05 0.000 0.022 -0. 009 0.018 -0.045 0.059 0.007 0.095 04/23/02 0.002 0.022 -0.01 0.04 0.003 0.021 0.012 0.016 0.033 0.042 -0.001 0.071 07/15/02 -0.008 0.024 0.20 2.00 0.017 0.017 0.004 0.017 0.004 0.033 0.049 0.055 11/04/02 -0.009 0.023 0.02 0.06 0.011 0.017 -0.006 0.017 -0.006 0.036 -0.004 0.057 3-48

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 17B FISH-OTHER (PCI/G WET WT.)

COLLECTION LOCATION DATE TYPE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 32 03/14/02 BLUEFISH 0.09 0.16 3.5 0. 0.11 0.18 0.003 0.018 -0.011 0.017 0.023 0.070 04/10/02 SKATE -0.06 0.17 2.2 0.6 -0.17 0.24 0.005 0.021 -0.005 0.023 -0.017 0.055 07/31/02 MIXTURE (A) -0.07 0.20 4.7 0.7 -0.08 0.34 0.000 0.023 0.004 0.025 0.071 0.072 10/24/02 BASS 0.08 0.20 4.5 0.8 0.05 0.28 -0.017 0.021 -0.007 0.028 0.025 0.066 35 01/14/02 SKATE 0.10 0.16 1. 8 0.4 0,14 0.20 0.006 0.013 -0.010 0.017 0.026 0.049 04/09/02 SKATE -0.03 0.17 2.5 0.7 0.00 0.15 -0.005 0.019 -0.005 0.019 -0.030 0.082 08/05/02 BLACKFISH 0.03 0.19 4.3 0.6 -0.07 0.30 -0.004 0.017 -0.002 0.020 -0.003 0.073 11/04/02 SKATE -0.07 0.16 2.5 0.6 0.07 0.20 0.022 0.018 -0.010 0.022 -0.069 0.046 40X 01/29/02 BASS -0.08 0.12 3.4 0.6 -0.03 0.17 0. 000 0.015 0.011 0.015 -0.001 0.053 04/12/02 BASS 0.09 0.22 4.3 0.8 0.02 0.28 0.002 0.023 -0.014 0.030 -0.041 0.097 07/31/02 BLACEFISH -0.12 0.22 3.3 0.5 0.15 0.40 -0.004 0.020 -0.012 0.024 0.002 0.077 11/05/02 BASS -0.07 0.18 4.5 0.7 -0.09 0.20 0.007 0.020 0.007 0.018 -0.023 0.041 COLLECTION LOCATION DATE TYPE CO-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 32 03/14/02 BLUEFISH 0.014 0.024 -0.004 0.037 0.039 0.030 -0.003 0.022 -0.024 0.019 -0.04 0.18 04/10/02 SKATE -0.007 0.024 -0.001 0.066 0.013 0.037 0.003 0.027 -0.008 0.024 0.12 0.19 07/31/02 MIXTURE (A) 0.008 0.026 -0.037 0.053 -0.012 0.044 0.003 0.040 -0.012 0.033 -0.02 0.19 10/24/02 BASS -0.014 0.026 0.025 0.053 0.033 0.049 0.001 0.032 0.000 0.026 -0.13 0.20 35 01/14/02 SKATE 0.008 0.013 -0.010 0.036 -0.007 0.034 0.006 0.022 -0.015 0.021 0.06 0.16 04/09/02 SKATE 0.007 0.016 0.019 0.059 0.023 0.026 -0.010 0.020 -0.006 0.020 0.04 0.22 08/05/02 BLACKFISH 0.021 0.022 -0.006 0.056 0.013 0.036 0.014 0.038 0.010 0.028 0.16 0.13 11/04/02 SKATE 0.000 0.027 -0.058 0.046 0.012 0.040 0.012 0.030 -0.008 0.020 0.01 0.22 40X 01/29/02 BASS 0.000 0.018 0.011 0.044 0.011 0.032 0.010 0.019 -0.006 0.019 -0.12 0.17 04/12/02 BASS 0.017 0.024 -0.031 0.063 -0.010 0.047 -0.010 0.029 -0.002 0.032 -0.13 0.24 07/31/02 BLACKFISH -0.017 0.022 -0.031 0.056 0.022 0.041 -0.002 0.039 0.002 0.032 0.05 0.20 11/05/02 BASS -0.008 0.029 0.008 0.046 -0.028 0.036 0.015 0.026 0.006 0.019 0.07 0.17 (A) MIXTURE OF SCUP AND BLACKFISH 3-49

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 17B FISH-OTHER (PCI/G WET WT.)

COLLECTION LOCATION DATE TYPE AG-lOM 1-131 CS-134 CS-137 SB-125 TH-228 32 03/14/02 BLUEFISH -0.010 0.023 0.003 0.040 0.000 0.020 -0.004 0.019 -0.021 0.044 -0.058 0.065 04/10/02 SKATE 0.003 0.031 0.009 0.038 -0.005 0.027 0.002 0.025 -0.004 0.060 -0.047 0.089 07/31/02 MIXTURE (A) 0.003 0.030 -0.100 0.580 -0.009 0.020 -0.005 0.022 0.003 0.044 -0.022 0.084 10/24/02 BASS 0.008 0.032 0.060 0.230 -0.006 0.021 -0.001 0.022 0.000 0.053 -0.064 0.074 35 01/14/02 SKATE 0.004 0.021 -0.020 0.110 0.004 0.015 0.014 0.017 -0.008 0.038 0.018 0.063 04/09/02 SKATE -0.022 0.033 0.006 0.036 -0O.011 0.025 0.009 0.021 -0.023 0.052 0.053 0.080 08/05/02 BLACKFISH -0.015 0.022 -0.320 0.600 -0.009 0.014 0.003 0.015 -0.004 0.037 -0.034 0.069 11/04/02 SKATE 0. 000 0.025 -0.047 0.076 -0.005 0.020 -0.022 0.022 0.019 0.043 -0.034 0.076 40X 01/29/02 BASS 0.019 0.024 0.035 0.043 -0.002 0.014 0.014 0.018 0.020 0.045 0.024 0.053 04/12/02 BASS 0.016 0.024 0.030 0.110 0.032 0.026 -0.004 0.025 0.032 0.052 -0.060 0.110 07/31/02 BLACKFISH -0.009 0.027 -0.030 0.610 -0.005 0.023 -0.017 0.018 0.000 0.043 0.016 0.062 11/05/02 BASS -0.014 0.028 -0.054 0.066 0.010 0.014 0.000 0.016 0.064 0.049 0.011 0.082 (A) MIXTURE OF SCUP AND BLACKFISH 3-50

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 18 MUSSELS (PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59

(+/-)

28 03/20/02 -0.140 0.220 1.3 0.6 -0.03 0.26 -0.018 0.023 -0.024 0(025 -0.085 0(071 07/01/02 0.000 0.230 1.5 0.5 0.04 0.35 -0.025 0.027 0.001 0.026 0.024 0.078 08/14/02 0.000 0.160 1.6 0.4 0. 09 0.27 -0.008 0.016 -0.004 0.020 -0.028 0.048 12/10/02 0.040 0.200 1.6 0.5 -0. 12 0.26 0.005 0.017 -0.010 0.019 -0.040 0.052 30 03/05/02 0.090 0.170 1.9 0.5 -0.04 0.19 -0.011 0.019 0.004 0.020 0.048 0.056 06/18/02 0.140 0.230 1.6 0.6 0.04 0.32 -0.018 0.022 0.003 0.024 -0.023 0 .090 08/13/02 0.030 0.190 1.7 0.5 0.02 0.27 -0.006 0.019 -0.002 0.016 0.017 0.058 10/29/02 -0.050 0.160 2.0 0.4 -0.02 0.20 -0.009 0.015 0.009 0.017 -0.039 0.045 COLLECTION LOCATION DATE CO-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 28 03/20/02 -0.014 0 .022 -0.050 0.110 0.030 0.043 -0.002 0.032 -0.005 0.021 -0.10 0.22 07/01/02 0.010 0.027 -0.032 0.064 -0.003 0.044 0.024 0.039 0.003 0.024 -0.09 0.18 08/14/02 0.005 0.015 0.050 0.069 0.004 0.033 -0.045 0.030 0.003 0.022 -0.04 0.15 12/10/02 -0.006 0.024 -0.021 0.040 0.021 0.039 0.034 0.031 -0.006 0.025 -0.08 0.17 30 03/05/02 -0.002 0.023 -0.060 0.054 -0.001 0.029 -0.015 0.022 0O.011 0.020 -0.15 0.19 06/18/02 0.017 0.021 -0.070 0.058 0.026 0.045 -0.006 0.035 0.000 0.029 0.14 0.21 08/13/02 -0.013 0.019 0.008 0.042 -0.004 0.033 0.001 0.029 -0.004 0.023 0.04 0.16 10/29/02 0.011 0.019 -0.010 0.035 -0.010 0.033 0.005 0.022 -0.010 0.230 0.02 0.15 COLLECTION LOCATION DATE AG-110M I-131 CS-134 CS-137 SB-125 TH-228

( / )---- ( / )----

28 03/20/02 0. 010 0.033 0.050 0.069 0.000 0.025 -0.009 0.024 -0.001 0.060 0.060 0.100 07/01/02 -0.004 0.024 -0.140 0.170 0.001 0.023 -0.004 0.022 0.018 0.060 0.011 0.098 08/14/02 -0.003 0.023 0.220 0.280 0.000 0.014 -0.005 0.016 0.002 0.037 0.017 0.052 12/10/02 0.014 0.027 0.120 0.260 0.000 0.019 -0.004 0.017 -0.012 0.041 0.083 0.073 30 03/05/02 -0.003 0.028 0.012 0.033 -0.006 0.022 0.007 0.020 0.000 0.047 -0.040 0.072 06/18/02 0.003 0.036 0.040 0.140 -0.031 0.024 -0.023 0.024 0.033 0.055 -0.020 0.110 08/13/02 -0.012 0.027 0.020 0.330 0.002 0.019 -0.015 0.017 -0.003 0.037 -0.008 0.061 10/29/02 0.002 0.020 0.030 0.100 -0.005 0.015 -0.004 0.019 0.013 0.043 -0.043 0.059 3-51

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 19 OYSTERS (PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 31 03/08/02 -0.060 0.170 1.540 0. 560 -0.01 0.16 0.000 0.015 0.001 0.020 -0.017 0.072 06/17/02 0.300 0.230 1. 970 0.5600 -0.11 0.33 0.002 0.025 -0.024 0.032 0.100 0.100 08/28/02 0.050 0.120 1.950 0.360 -0.06 0.17 -0.002 0.013 -0.002 0.012 0.016 0.038 12/16/02 0.000 0.200 1.990 0.520 0.09 0.28 -0.012 0.019 -0.013 0.023 0.012 0.050 32 03/06/02 0.110 0.160 1.970 0.580 0.08 0.19 0. 000 0.019 0.002 0.015 -0 .009 0.073 06/18/02 -0.080 0.180 1.350 0.560 0.25 0.25 0O.011 0.021 -0.003 0.022 -0.031 0.066 08/30/02 -0.030 0.120 1.360 0.270 0.00 0.14 0.005 0 .011 0.008 0.011 -0.017 0.029 12/17/02 0.000 0.190 1.630 0.450 0.26 0.29 0.009 0.021 0.023 0.026 -0.018 0.051 34X 03/08/02 -0.090 0.130 2.030 0.460 0.08 0.16 0.003 0.019 0.021 0.019 0.001 0.045 06/18/02 0.040 0.220 1.640 0. 650 0.07 0.29 -0.023 0.019 0.007 0.028 0.100 0.110 08/28/02 0.040 0.180 2.120 0.490 0.08 0.24 -0.003 0.018 0.015 0.020 0.007 0.046 12/16/02 0.160 0.240 1.330 0.470 -0.11 0.31 0.004 0.020 -0.013 0.023 0.012 0.053 36 03/07/02 -0.100 0.220 1.600 0.630 -0.01 0.25 -0.018 0.031 -0.013 0.031 0.009 0.081 06/17/02 -0.100 0.140 1.580 0.440 -0.13 0.21 0.009 0.017 -0.003 0.017 0.002 0.056 08/27/02 0.210 0.190 1.540 0.430 0.19 0.26 0.003 0.020 -0.011 0.023 -0.035 0.050 12/10/02 -0.070 0.230 1.640 0.500 -0.02 0.33 0.007 0.020 -0.001 0.023 0.007 0.056 37C 03/07/02 0.050 0.240 2.480 0.710 -0.03 0.26 -0.016 0.030 -0.005 0.030 0.031 0.079 06/17/02 0.120 0.260 2.110 0.660 0.26 0.28 0.026 0.029 0.006 0.030 0.024 0.082 08/27/02 -0.040 0.150 1.460 0.360 0.06 0.19 0.001 0.013 0.000 0.014 -0.014 0.039 12/10/02 0.140 0.240 1.530 0.510 0.11 0.41 0.011 0.022 0.010 0.028 -0.021 0.074 40X 01/29/02 -0.110 0.150 1.780 0.440 -0.10 0.18 0.001 0.016 -0.003 0.020 0 .011 0.047 06/17/02 -0.020 0.170 1.130 0.510 0.10 0.33 -0.006 0.021 0.008 0.029 0.025 0.054 07/31/02 0.050 0.230 2.030 0.530 0.20 0.34 0,007 0.020 0.001 0.020 0.014 0.075 11/05/02 0.020 0.160 2.280 0.500 -0.07 0.18 0.002 0.017 0.009 0.021 0.000 0.033 3-52

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 19 OYSTERS (PCI/G WET WT.)

COLLECTION LOCATION DATE CO-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 31 03/08/02 -0.006 0. 023 -0.022 0. 053 0.006 0.037 -0.012 0.025 0.020 0.020 -0.05 0.05 06/17/02 0.000 0.026 -0.060 0.054 -0.031 0.047 -0.028 0.039 -0.005 0.035 0.04 0.22 08/28/02 0. 004 0.013 -0.037 0.036 -0.009 0.024 -0.001 0.020 -0.008 0.016 0.02 0.13 12/16/02 -0.021 0.023 0.081 0.093 -0.012 0.042 0.003 0.031 0.007 0.024 0.10 0.17 32 03/06/02 0.012 0.025 -0.010 0.052 0.002 0.035 0.003 0.025 -0.003 0.024 -0.04 0.20 06/18/02 0.014 0.028 -0.034 0.057 -0.007 0.032 0.013 0.034 -0.022 0.026 0.08 0.20 08/30/02 0.007 0.012 -0.017 0.036 0.004 0.021 0.004 0.018 -0.006 0.015 0.04 0.10 12/17/02 0.017 0.021 -0.044 0.049 -0.002 0.041 0.000 0.031 0.014 0.025 -0.07 0.20 34X 03/08/02 0.001 0.018 -0.046 0.038 -0.004 0.029 -0.001 0.020 0.006 0.018 0.20 0.15 06/18/02 -0.001 0.026 -0.038 0.045 0.023 0.047 0.014 0.029 -0.003 0.023 0.08 0.23 08/28/02 -0.008 0.019 0.026 0.072 -0.014 0.037 -0.021 0.029 -0.019 0.023 -0.07 0.16 12/16/02 -0.004 0.021 -0.074 0.050 -0.019 0.047 0.022 0.031 -0.004 0.029 0.11 0.18 36 03/07/02 -0.028 0.031 0.017 0.098 0.027 0.043 0.008 0.053 0.000 0.027 -0.17 0.24 06/17/02 0.005 0.018 -0.037 0.038 -0.015 0.027 0.003 0.021 -0.007 0.023 -0.01 0.14 08/27/02 0O.011 0.019 0.081 0.077 0.023 0.041 -0.004 0.030 -0.004 0.025 0.02 0.15 12/10/02 0.000 0.024 -0.005 0.041 0.006 0.047 -0.003 0.034 0.013 0.028 -0.02 0.19 37C 03/07/02 0.024 0.034 0.210 0.160 -0.055 0.047 0.014 0.052 -0.004 0.029 -0.03 0.22 06/17/02 0.000 0.027 -0.001 0.048 0.005 0.054 -0.002 0.033 -0.008 0.037 -0.06 0.23 08/27/02 0.012 0.014 -0.001 0.070 0.010 0.028 -0.009 0.024 0.003 0.019 -0.07 0.13 12/10/02 0O.011 0.020 -0.037 0.047 0.026 0.041 0.017 0.042 0.005 0.031 0.20 0.21 40X 01/29/02 -0.009 0.019 -0.008 0.045 -0.020 0.028 0.013 0.024 0.012 0.017 -0.01 0.15 06/17/02 0.007 0.024 -0.036 0.062 0.006 0.045 0.000 0.028 0.006 0.029 -0,20 0.23 07/31/02 0.011 0.023 -0.009 0.043 -0.006 0.046 0.018 0.045 -0.002 0.030 0.05 0.20 11/05/02 0.003 0.024 -0.008 0.043 -0.006 0.029 0.016 0.023 0.015 0.021 -0.04 0.14 3-53

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 19 OYSTERS (PCI/G WET WT.)

COLLECTION LOCATION DATE AG-110M 1-131 CS-134 CS-137 SB-125 TH-228 (0/0) (0/0) 31 03/08/02 0.026 0.026 0.017 0.041 0.002 0.023 -0.019 0.025 -0.056 0.050 0.000 0.073 06/17/02 0.001 0.028 -0.060 0.170 -0.006 0.026 -0.019 0.025 0.086 0.062 0.080 0.100 08/28/02 -0.015 0.020 -0.012 0.075 -0.007 0.016 -0.015 0.014 0.006 0.035 0.037 0.057 12/16/02 -0.003 0.026 -0.050 0.190 0.007 0.020 -0.006 0.021 0.011 0.043 0.007 0.081 32 03/06/02 0.053 0.024 0.025 0.053 0.015 0.020 0.005 0.030 0.007 0.049 -0.061 0.074 06/18/02 0.053 0.022 0.090 0.130 -0.005 0.021 0.010 0.018 0.014 0.052 0.057 0.086 08/30/02 0.025 0.010 0.030 0.110 -0.006 0.011 -0.006 0.018 -0.010 0.025 0.030 0.045 12/17/02 0.025 0.027 -0.070 0.160 -0.011 0.023 -0.038 0.028 0.007 0.047 -0.032 0.070 34X 03/08/02 0.006 0.025 -0.005 0.042 0.008 0.016 0.008 0.017 -0.023 0.046 0.052 0.061 06/18/02 0.022 0.031 -0.180 0.150 -0.006 0.021 -0.003 0.022 -0.011 0.048 0.000 0.090 08/28/02 0.005 0.023 0.000 0.100 -0.007 0.020 0.005 0.019 0.017 0.043 -0.029 0.069 12/16/02 0.004 0.028 0.040 0.190 -0.012 0.022 0.016 0.019 -0.004 0.055 -0.061 0.083 36 03/07/02 0.000 0.042 -0.047 0.070 0.002 0.025 -0.019 0.031 0.065 0.070 0.080 0.110 06/17/02 0.005 0.026 -0.020 0.130 0.004 0.019 -0.003 0.016 0.005 0.040 0.023 0.053 08/27/02 0.000 0.026 0.090 0.110 -0.005 0.022 -0.001 0.018 -0.007 0.051 0.017 0.077 12/10/02 -0.021 0.023 -0.280 0.340 0.001 0.019 -0.005 0.018 0.016 0.047 0.065 0.083 37C 03/07/02 -0.003 0.038 -0.038 0.071 0.008 0.029 -0.022 0.027 -0.017 0.068 0.030 0.110 06/17/02 0.008 0.033 -0.080 0.180 -0.009 0.025 0.000 0.024 0.037 0.062 -0.070 0.110 08/27/02 -0.006 0.018 -0.005 0.094 -0.009 0.013 -0.003 0.016 -0.004 0.036 -0.007 0.055 12/10/02 -0.017 0.032 -0.100 0.320 -0.001 0.021 0.018 0.021 -0.025 0.052 0.046 0.089 40X 01/03/00 0.076 0.023 -0.017 0.047 0.008 0.020 -0.017 0.057 0.052 0.044 0.020 0.070 06/17/02 0.052 0.026 -0.080 0.130 0.028 0.024 -0.040 0.070 0.025 0.055 -0.063 0.099 07/31/02 0,027 0.016 -0.230 0.580 0.021 0.020 -0. 001 0.019 -0.038 0.043 0.041 0.082 11/05/02 0.059 0.021 0.015 0.061 0.006 0.017 -0.033 0.037 -0.020 0.046 0.030 0.075 3-54

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 20 CLAMS (PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 29 02/06/02 0.060 0.180 2.6 0.6 0.01 0.17 0.003 0.018 0.000 0.022 0.034 0.043 04/24/02 0.210 0.200 2.1 0.6 -0.12 0.23 0.010 0.022 -0.007 0.021 -0.061 0.058 07/23/02 -0.050 0.270 2.0 0.5 0.26 0.44 -0.030 0.019 -0.006 0.025 0.028 0.091 12/13/02 0.080 0.160 2.3 0.5 0. 18 0.21 0.012 0.018 -0.005 0.020 -0.026 0.043 35X 01/28/02 -0.100 0.200 2.1 0.6 -0.11 0.24 0.001 0.020 0.000 0.017 -0.015 0.065 06/10/02 0.040 0.140 2.0 0.6 -0.24 0.23 0.010 0.021 0.001 0.018 -0.012 0.045 08/22/02 -0.080 0.140 1.5 0.4 0.13 0.18 -0.003 0.012 0.004 0.014 0.000 0.038 10/15/02 -0.040 0.170 2.6 0.5 0.00 0.29 0.010 0.018 0.015 0.020 -0.025 0.045 38 01/28/02 0.040 0.150 1.5 0.6 0.03 0.17 0.008 0.019 0.009 0.019 -0.026 0.070 06/10/02 -0.080 0.200 2.1 0.5 -0.08 0.28 0.003 0.022 -0.014 0.024 0.002 0.048 08/22/02 -0.030 0.110 2.0 0.4 0.09 0.16 0.003 0.013 -0.003 0 .011 0.003 0.037 10/15/02 0.050 0.200 2.0 0.5 0.10 0.37 0.016 0.022 -0.015 0.023 0.008 0.055 39x 01/25/02 0.000 0.200 1.4 0.6 -0.02 0.21 0.000 0.023 0.020 0.021 0.059 0.066 04/24/02 0.020 0.120 2.1 0.6 -0.20 0.17 0.002 0.022 -0.003 0.015 0.002 0.073 07/23/02 0.030 0.210 1.8 0.4 -0.07 0.43 -0.003 0.017 0.013 0.028 -0.033 0.083 10/28/02 0.000 0.150 2.0 0.4 -0.10 0.21 -0.001 0.013 0.000 0.015 0.018 0.041 3-55

Dominion Nuclear Connecticut, Inc. Annual Radiological Enviromnental Operating Report 2002 Millstone Station TABLE 20 CLAMS (PCI/G WET WT.)

COLLECTION LOCATION DATE CO-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 29 02/06/02 0.021 0.021 -0.012 0.041 -0.030 0.037 -0.002 0.019 0.009 0. 021 -0.19 0.19 04/24/02 -0.024 0.030 -0.039 0.049 -0.013 0.039 -0.003 0.029 -0.004 0.021 -0.06 0.22 07/23/02 0.001 0.020 -0.042 0.049 -0.023 0.046 -0.023 0.042 -0.026 0.040 -0.04 0.18 12/13/02 -0.001 0.023 -0.013 0.039 0.034 0.034 0.024 0.025 -0.005 0.023 -0.01 0.19 35x 01/28/02 0.008 0.020 -0.075 0.049 0.015 0.037 -0.005 0.028 -0.002 0.026 -0.06 0.18 06/10/02 0.000 0.024 0.030 0.049 -0.020 0.035 -0.008 0.023 -0.004 0.024 0.14 0.17 08/22/02 0.003 0.015 0.031 0.063 -0.007 0.031 0.003 0.024 -0.017 0.020 -0.03 0.13 10/15/02 0.006 0.018 -0.029 0.053 0.013 0.035 -0.007 0.027 0.026 0.027 0.05 0.17 38 01/28/02 0.002 0.020 0.005 0.045 -0.009 0.036 -0.008 0.022 0.004 0.020 0.03 0.19 06/10/02 0.002 0.015 0.002 0.042 -0.017 0.039 -0.010 0.030 0.002 0.023 -0.16 0.18 08/22/02 0.005 0.016 0.074 0.058 0.014 0.025 0.017 0.021 -0.005 0.017 -0.08 0.12 10/15/02 -0.004 0.021 -0.015 0.046 0.000 0.039 -0.034 0.035 0.002 0.030 0.04 0.16 39X 01/25/02 -0.013 0.023 -0.018 0.054 0.018 0.038 0.008 0.022 -0O.011 0.025 -0.05 0.19 04/24/02 -0O.011 0.028 0.006 0.042 0.026 0.037 -0.016 0.024 0.000 0.021 -0.01 0.17 07/23/02 0.019 0.019 -0.038 0.052 -0.010 0.042 0.007 0.040 0.012 0.034 0.07 0.16 10/28/02 -0.004 0.017 -0.010 0.035 0.007 0.029 -0.001 0.019 0.007 0.019 0.06 0. 13 3-56

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 20 CLAMS (PCI/G WET WT.)

COLLECTION LOCATION DATE AG-1lOM 1-131 CS-134 CS-137 SB-125 TH-228 29 02/06/02 -0.004 0.027 -0.001 0.036 -0.002 0. 021 0.000 0.021 0.023 0.052 0.002 0.092 04/24/02 0.009 0.021 -0.008 0.041 0.016 0.024 0.018 0.025 0.005 0.060 -0.020 0.110 07/23/02 0.015 0.025 0.300 0.890 -0.002 0.021 0.003 0.019 -0.002 0.041 -0.052 0.073 12/13/02 0.010 0.022 0.020 0.120 0.000 0.020 -0.017 0.019 0.024 0.039 -0.032 0.077 35X 01/28/02 -0.015 0.035 0.049 0.065 0.015 0.021 0.000 0.021 0.037 0.051 -0.009 0.082 06/10/02 -0.014 0.026 0.030 0.120 -0.003 0.019 -0.006 0.020 -0.007 0.042 0.051 0.073 08/22/02 0.019 0.018 -0.040 0.140 0.002 0.015 0.000 0.014 0.005 0.032 0.050 0.055 10/15/02 -0.017 0.020 -0.040 0.310 -0.003 0.017 0.006 0.016 -0.005 0.033 -0.006 0.065 38 06/10/02 0.013 0.028 -0.030 0.140 0,012 0.022 -0.006 0.017 0.003 0.046 -0.016 0.073 01/28/02 0.012 0.022 -0.016 0.051 -0.010 0.021 -0.004 0.022 -0.004 0.045 0.008 0.068 08/22/02 0.005 0.017 -0.030 0.110 -0.001 0.012 -0.008 0.012 -0.002 0.029 0.033 0.042 10/15/02 0.001 0.029 0.190 0.400 0.011 0.021 0.006 0.019 0.006 0.045 -0.056 0.062 39X 01/25/02 -0O.011 0.031 0.018 0.073 -0.014 0.020 -0.010 0.025 -0.009 0.043 -0.080 0.074 04/24/02 -0.007 0.029 -0.022 0.037 -0.021 0.019 0.005 0.018 -0.005 0.053 0.035 0.099 07/23/02 0.007 0.025 0.100 1.000 -0.005 0.019 -0.009 0.016 0.020 0.051 0.051 0.066 10/28/02 -0.004 0.021 0.030 0.100 0.001 0.014 0.004 0.013 -0.026 0.030 -0.007 0.050 3-57

Dominion Nuclear Connecticut, Inc. Annual Radiological Envinrnental Operating Repoit 2002 Millstone Station TABLE 22 LOBSTERS (PCI/G WET WT.)

COLLECTION LOCATION DATE BE-7 K-40 CR-51 MN-54 CO-58 FE-59 32 02/04/02 -0.01 0.15 1.9 0. -0.06 0.15 -0.012 0.020 -0.002 0.017 -0.020 0.043 06/03/02 -0.02 0.19 1.7 0.6 0.04 0.30 0.008 0.023 -0.002 0.028 0.046 0.071 08/07/02 -0.05 0.18 2.7 0.5 -0.21 0.34 -0.008 0.016 -0.005 0.024 -0.005 0.054 11/01/02 -0.04 0.15 2.4 0.4 -0.11 0.16 -0.004 0.013 0.002 0.018 0.031 0.033 35 02/04/02 0.05 0.18 2.6 0.7 0.11 0.18 0.019 0.026 0.009 0.017 0.001 0.075 06/03/02 0.10 0.23 2.6 0.6 0.22 0.33 -0.018 0.023 -0.002 0.024 -0.035 0.058 08/07/02 0.03 0.19 2.2 0.6 0.39 0.33 -0.016 0.018 0.012 0.021 -0.028 0.077 11/01/02 0.01 0.17 2.0 0.5 0.00 0.18 -0.003 0.019 0.001 0.017 0.024 0.042 37x 02/07/02 -0.04 0.17 2.9 0.6 0.15 0.20 0.000 0.023 0.010 0.021 -0.014 0.055 05/31/02 -0.11 0.21 2.0 0.6 -0.01 0.29 0.009 0.023 0.003 0.023 0.008 0.066 08/12/02 0.03 0.23 2.3 0.5 0.06 0.39 0.011 0.023 -0.012 0.026 -0.014 0.070 11/01/02 -0.03 0.19 2.4 0.5 0.06 0.22 -0.002 0.020 -0.002 0.019 0.023 0.046 COLLECTION LOCATION DATE CO-60 ZN-65 ZR-95 NB-95 RU-103 RU-106 32 02/04/02 -0.009 0.021 -0O.011 0. 043 -0.009 0.031 -0.006 0.024 -0.003 0.017 0.07 0.18 06/03/02 -0.010 0.024 -0.014 0.041 0.047 0.054 0.016 0.031 -0.021 0.030 0.07 0.16 08/07/02 0.004 0.020 0.041 0.067 -0.001 0.031 0.017 0.035 -0.017 0.027 0.01 0.14 11/01/02 -0.009 0.017 -0.039 0.033 0.003 0.026 -0.002 0.022 -0.005 0.017 -0.12 0.14 35 02/04/02 0.009 0.022 -0.012 0.057 -0.004 0.032 0.001 0.024 0.014 0.022 0.12 0.21 06/03/02 -0.011 0.025 -0.007 0.054 -0.013 0.043 0.009 0.034 0.021 0.029 0.00 0.22 08/07/02 -0.010 0.023 -0.032 0.054 0.025 0.047 0.013 0.042 0.005 0.031 -0.05 0.20 11/01/02 0.008 0.022 -0.008 0.046 0.029 0.030 -0.013 0.023 0.003 0.018 0.09 0.17 37X 02/07/02 -0.003 0.018 -0.056 0.046 -0.013 0.034 -0.012 0.026 -0.008 0.021 -0.02 0.18 05/31/02 0.005 0.022 0.012 0.054 -0.008 0.043 -0.029 0.035 0.003 0.029 0.10 0.18 08/12/02 0.021 0.021 -0.083 0.047 -0.035 0.052 -0.022 0.046 -0.012 0.035 -0.24 0.20 11/01/02 0.014 0.021 -0.031 0.047 0.030 0.045 0.009 0.026 -0.012 0.027 0.07 0.18 3-58

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Opeating Report 2002 Millstone Station TABLE 22 LOBSTERS (PCI/G WET WT.)

COLLECTION LOCATION DATE AG-110M 1-131 CS-134 CS-137 SB-125 TH-228 32 02/04/02 -0.006 0.024 -0.003 0.034 0.000 0. 017 -0.022 0.018 0.008 0.046 0.069 0.078 06/03/02 -0.004 0.037 -0.030 0.180 0.005 0.019 0.013 0.021 0.020 0.052 0.018 0.089 08/07/02 0.005 0.020 0.220 0.530 -0.006 0.016 0.005 0.016 -0.031 0.039 0.026 0.056 11/01/02 0.005 0.017 -0.024 0.075 0.000 0.015 0.010 0.017 0.012 0.037 -0.066 0.058 35 02/04/02 -0.007 0.024 -0.016 0.041 0.012 0.019 0.020 0.021 -0.031 0.049 -0.026 0.090 06/03/02 -0.042 0.033 0.080 0,200 0.004 0.027 -0.004 0.024 -0.005 0.053 -0.016 0.078 08/07/02 -0.008 0.029 -0.200 0.590 -0.011 0.018 -0.032 0.020 0.013 0.041 -0.022 0.074 11/01/02 0.012 0.024 0.050 0.091 0.004 0.017 -0.008 0.018 -0.009 0.042 -0O.011 0.059 37X 02/07/02 0.001 0.032 0.022 0.035 0.008 0.025 0.002 0.023 0.023 0.044 0.003 0.092 05/31/02 -0.028 0.026 -0.150 0.270 0.007 0.025 0.009 0.022 -0.004 0.046 0.009 0.075 08/12/02 0.000 0.033 -0.150 0.420 0.011 0.022 0.011 0.021 0.025 0.047 -0.086 0.083 11/01/02 -0.013 0.031 0.000 0.100 -0.002 0.020 -0.001 0.022 0.030 0.048 -0.028 0.087 3-59

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station

4. DISCUSSION OF RESULTS This section summarizes the results of the analyses of environmental media sampled. DNC has carefully examined the data throughout the year and has presented in this section all cases where station related radioactivity could be detected and compared the results with previous environmental surveillance data. Few impacts of the station operation on the environment were observed.

Sub-sections contain a description of each particular media or potential exposure pathway.

Naturally occurring nuclides such as Be-7, K-40, and Th-228 were detected in numerous samples. Be-7, which is produced by cosmic processes, was observed predominantly in airborne and vegetation samples. Th-228 results were variable and are generally at levels higher than plant related radionuclides.

Cs-137 and Sr-90 were observed at levels similar to those of past years. The levels of Cs-137 and Sr-90 detected were the result of atmospheric nuclear weapons testing in the 1960's.

4.1. Gamma Exposure Rate (Table 1)

Gamma exposure rate is determined from the integrated exposure measured over a quarter using CaSO4 (Tm) Panasonic model UD-804 ASx thermoluminescent dosimeters (TLDs). In 2000, the TLDs (Victoreen glass bulb CaF2(Mn)), which historically were used to measure radioactivity around Millstone for over 20 years, were replaced with the Panasonic TLDs. The new Panasonic dosimeters have a lower response than the Victoreen dosimeters. Results from 2000 through 2002 show a 15% to 20% lower response when compared to trended results for previous years. This lower response is consistent for all locations, including both indicator and control locations.

The dosimeters are strategically placed at a number of on-site locations, as well as at inner and outer off-site locations. Starting in 2001, the collection of TLDs was changed from monthly to quarterly and additional locations were incorporated into the REMODCM for measurement. The exposure rate measurements in Table 1 show the results for all 41 locations measured. Trends similar to those of past years are observed. These measurements demonstrate the general variations in background radiation between the various on-site and off-site locations and include gamma exposure from all sources of radioactivity. For example, the Weather Shack (location 02), MP3 Discharge (location 05), Environmental Laboratory (location 08), and Corey Road (location 48) experience higher exposure rates due to their 4-1

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station proximity to granite beds and stonewall fences. In addition, the Ledyard control location (location 14C) experiences relatively higher background exposure rates than the other control locations at Mystic, Norwich, and Old Lyme (locations 13C, 15C, and 16C). The only appreciable effect seen in the TLD data is that attributable to the variation in the background radiation that is consistent with previous years.

Figure 4.1-1 shows a historical trend of TLD exposure rate measurements, comparing an annual average of all indicator TLDs, an annual average of all control TLDs, and the annual average of the two most critical indicator locations which are used to represent the two closest site boundary residences in the North-northwest and Northeast directions. Examination of the average measurements since 1990 show interesting site changes and site characteristics. For example, the average of all indicator locations up through 1995 when Unit 1 was still in operation display the effects of N-16 BWR turbine building skyshine to immediate areas onsite. As discussed in previous annual reports, the effects of skyshine at onsite monitoring stations were increases as high as 6 uR/hr at certain onsite locations. Skyshine decreased rapidly with distance and was indistinguishable from normal background measurements at the closest offsite monitoring stations. Also apparent in Figure 4.1-1 is the replacement of the historical Victoreen TLD monitoring system with the Panasonic system in year 2000. The difference in response between the two systems is very apparent with the new Panasonic TLDs reading 15% to 20%

lower. The figure also relates the difference in critical indicator locations (1) and (3) and the annual average of all indicator TLDs to the annual average of the control TLDs collected and measured during coincident periods throughout the year. The exposure measurements of many indicator locations onsite are under the influence of natural background exposure differences caused by the many granite out-croppings typical of the Millstone area. Historical data evaluation has shown that TLD sample locations in the vicinity of granite can be dramatically influenced by natural radioactivity contained within the granite. As shown in Figure 4.1-1, the annual average of the indicator TLDs and one of the critical indicator locations are slightly higher in gamma exposure rate than the average control gamma exposure rate.

This difference is the result of the nearby granite. For conservatism, if the difference were the result of plant operation (e.g., storage of radioactive waste on-site, gaseous effluents, etc.) an assessment of the resulting dose consequences assuming constant year-round residency is shown in Section 5 as not exceeding 5.2 mrem.

4-2

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Figure 4.1-1 MILLSTONE TLDs uR/hr Historical Annual Gamma Exposure Rate 12 -

NAII Indicators

All Controls

Indicator Loc 1

Indicator Loo 3 10 6 -

4.2. Air Particulate Gross Beta Radioactivity (Table 2)

Air is continuously sampled at one outer ring and seven inner ring locations by passing it through glass fiber particulate filters. These are collected weekly and analyzed for gross beta radioactivity.

Results are shown on Figure 4.2-1 and Table 2. Gross beta activity remained at levels similar to that seen over the last decade. Inner and outer ring monitoring locations continue to show no significant variation in measured activities (see Figure 4.2-2). This indicates that any station contribution is not measurable.

4.3. Airborne Iodine (Table 3)

Charcoal cartridges are included at all of the Radiological Effluent Monitoring Manual (REMM) required air particulate stations for the collection of atmospheric iodine. These cartridges are analyzed on a weekly basis for I- 131. No detectable levels of I- 131 were seen in the 2002 charcoal samples.

4-3

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Figure 4.2-1 MILLSTONE AIR PARTICULATE pCim3 2002 Gross Beta Radioactivity 0.036 Indicators Controls 0.03 -

0.026 -

0.02 0.015 0.01 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Figure 4.2-2 MILLSTONE AIR PARTICULATE pCi/m3 5 Year Historical Gross Beta Radioactivity 0.03C

+Indicators Controls 0.03 -g 0.025 0.02 0.015 coz -. c~z - o'z -wz - ~z 4-4 C0C

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station 4.4. Air Particulate Gamma (Table 4A-D)

The air particulate samples that are utilized for the weekly gross beta analyses are composited and analyzed quarterly for gamma emitting isotopes. The results, as shown in Tables 4A - 4D, indicate the presence of naturally occurring Be-7, which is produced by cosmic processes. No other positive results were seen. These analyses indicate the lack of station effects.

4.5. Air Particulate Strontium (Table 5)

Table 5 in past years was used to report the measurement of Sr-89 and Sr-90 in quarterly composited air particulate filters. Because previous data has shown the lack of detectable station activity in this media, the requirement for these measurements was removed from the Radiological Effluent Monitoring Manual (REMM) and analyses have been discontinued. The fact that milk samples are a much more sensitive indicator of fission product existence in the environment, prompted the decision for discontinuation. In the event of widespread station related contamination or special events such as the Chernobyl incident, these measurements may be made. Historically, when world events created conditions to cause these measurements to be detectable, no difference was noted between indicator and control locations. This further confirms that detectable levels were not plant related.

4.6. Soil (Table 6)

Millstone resumed collection of soil as a required media type in the fourth quarter of 2001. Prior to then, it had not been sampled for over fifteen years largely due to the fact that when it was previously sampled, no detectable station activity was observed. No station detectable activity is seen in Table 6 soil samples taken in 2002. It is anticipated that baseline activity levels in soil will be developed for isotopes such as Cs-137, that are the result of past weapons testing fallout, and will prove useful years into the future when site characterization and decommissioning of the station become the focus after License termination. This media is collected quarterly from one control and two indicator locations.

4-5

Dominion Nuclear Connecticut Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station 4.7. CowMilk (Table 77 The most sensitive indicator of fission product existence in the terrestrial environment is usually milk samples. This, in combination with the fact that milk is a widely consumed food, results in this pathway usually being the most critical.

Unfortunately, since 1996 all dairy (cow) farms close enough (i.e.

within 10 miles) to Millstone to be considered an indicator location have been out of business. Therefore, the sampling of cow milk has stopped until such time that a new dairy farm goes into business. Each year a Land Use Census is used to identify locations of milk animals that should be included in the monitoring program. It is performed annually and is maintained by observations, door-to-door surveys and consulting with local agriculture authorities. The 2002 census can be seen in Appendix A. If and when a new dairy farm business starts within a distance to be considered an indicator location to measure levels of station radioactivity, the collection of cow milk will resume.

4.8. Goat Milk (Table 8)

Goat milk samples can be a more sensitive indicator of fission products in the terrestrial environment than cow milk samples.

This is dependent on a number of parameters, including:

metabolism of these animals, feeding habits, and feed type. During past weapons testing periods, samples taken at certain locations indicated higher uptake than others. This was especially apparent in past samples collected in the immediate area around Millstone (see previous Annual Operating Reports). One of these sites, location 22 (5.2 Mi. NNE), sampled only since 1994, exhibits this trend showing higher Sr-90 and Cs- 137 concentrations. See Section 6.0 for further discussion of Sr-90 and Cs-137 in goat milk.

Goat milk was unavailable at all locations both early and late in the year. Per requirements, pasture grass or feed is collected as a substitute when milk cannot be collected (see 4.9. Pasture Grass and Feeal.

As in years past, Cs-137 and Sr-90 were observed in goat milk.

Their presence is the result of residual radioactivity deposited into the environment from past nuclear weapons testing fallout. The facts that lead to this conclusion are presented in Section 6.0, and include: effluent release totals for these isotopes show insufficient quantities to account for such measurements; Sr-89 and Cs-134 4-6

Dominion NuclearConnecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station which are chemically similar and generally release in comparable quantities were not detected, and a trend since the early 1960's shows a consistent declining presence of Cs- 137 and Sr-90 in milk from Connecticut. Strontium analysis frequency is quarterly. The samples collected within each quarter from each sample location are composited and analyzed at the end of each quarter.

No station related I-131 was seen in this media. For over a decade, no detectable levels of I-131 have been seen in goat milk samples.

Not since the period immediately following the Chernobyl accident has I- 131 been detected in any milk samples.

4.9. Pasture Grass and Feed (Table 9)

When the routine milk samples are unavailable, samples of pasture grass are required as a replacement. These samples may also be taken to further investigate the levels of radioactivity in milk. During the winter months and early spring, insufficient growth prohibits sampling of pasture grass as a replacement sample. Feed (e.g., hay) is sampled whenever pasture grass is unavailable.

No station effects were seen in pasture grass and feed samples.

Similar to that observed in goat milk, the Cs-137 values at indicator and control locations are comparable and would indicate that the levels observed are the result of residual weapons testing fallout.

4.10. Well Water (Table 10)

Well water samples are not required by the REMM. Data from 1973-1985 showed the lack of detectable station activity in this media. The sampling of well water was discontinued in 1985.

4.11. Reservoir Water (Table 11)

Reservoir water samples are special samples not required by the REMM. Previous data has shown the lack of detectable station activity in this media. This fact and the extremely unlikely possibility of observing routine station effluents in this media have resulted in discontinuing these samples. In the event of widespread station related contamination, these samples may be collected.

4-7

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station 4.12. Fruits and Vegetables (Table 12)

Consistent with past years, this media did not show any station effects. Naturally occurring K-40 was detected in all samples.

4.13. Broad Leaf Vegetation (Table 13)

Consistent with past years, this media did not show any station effects. Positive indications of Cs-137 were observed in one sample.

The level is comparable to those observed in past years and is due to fallout.

This media can show early and sensitive indication of releases from the station from both unplanned releases and normal operations.

Therefore, to enhance program-monitoring effectiveness, samples of broadleaf vegetation are collected monthly during the growing season, April - October, even though requirements are to collect twice a year.

Due to a minor fuel pin failure in Unit 2, higher concentrations of iodine were measured in the unit's gaseous effluent discharge pathways during periods when the unit was shutdown. At no time during the year did any samples that would be used to detect iodine in the environment (i.e., air iodine samples, goat milk or broadleaf vegetation) show any detectable I- 131.

4.14. Seawater (Table 14)

Samples from the vicinity of discharge (32) are continuous composites collected monthly and samples from Giants Neck (37C) are quarterly composites of weekly grab samples. Millstone increased the required sampling frequency for composite samples from the vicinity of discharge to a monthly basis to increase monitoring effectiveness.

Naturally occurring K-40 was seen in all samples. Station related tritium (H-3) was observed from the vicinity of discharge sample location (32) during various periods throughout the year. Figure 4.14-1 shows a ten-year trend of tritium releases in Millstone liquid effluents versus measured environmental concentrations from the vicinity of discharge location. As can be noted from the figure, since the restart of Unit 3 in 1998 and Unit 2 in 1999, tritium releases in liquid effluents have risen to levels at or above those observed during the pre-shutdown period. Tritium is generated during operation from fission and neutron reactions.

4-8

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Tritium builds up in the reactor coolant in each fuel cycle.

Measured plant related levels of H-3 insea water from the immediate vicinity of discharge have been observed throughout the operation of Millstone's nuclear units. The sample is taken directly from liquid effluent flow prior to dilution into Long Island Sound.

Dilution studies performed on this discharge have determined that a dilution factor of 3 is appropriate to estimate concentrations immediately outside the quarry within a near-field area. After dilution, the concentration of tritium expected in the immediate area of the Sound would approach undetectable levels at the required LLD.

Figure 4.14-1 MILLSTONE LIQUID H-3 RELEASE VERSUS SEA WATER CONC.

1700 10 Year Historical Trend 1600 1600 -Cunes 1400 uC~cc 1300 _

1200 1100 1000 900 700 A Goo 1 1 I 600 400 \A 1 Al\ a 3001A W IVR-T0 200 { I 100 o ~~. ...... e.

+/-*

.... .11..

4.15. Bottom Sediment (Table 15)

Similar to last year, Cs- 137 was detected in two samples from Golden Spur (30X). The Golden Spur area is a fresh water area and the levels of Cs-137 at this location are comparable to those observed in past river water sediments taken from up the Connecticut River. Due to this and the relative distance and direction of the Golden Spur location, the Cs- 137 detected at Golden Spur is not plant related.

4-9

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Cs-137 was also detected in one of the extra samples from Jordon Cove Bar (39X) in the third quarter. Co-60 was detected in one sample from the Vicinity of Discharge (32) in the second quarter.

Both are considered plant related activity, which has not been detected in bottom sediment for over a decade. The levels detected are comparable to the levels observed in 1990. Bottom sediment is not a dose pathway to man and therefore the presence of radioactivity in bottom sediment does not pose any dose consequences. Examinations of aquatic media sampled from the same sampling locations (discussions that follow) do not show any detectable Co-60 or Cs-137.

4.16. Aquatic Flora (Table 16)

Sampling of this media provides useful information because it is very sensitive to station discharges. However, no station related radioactivity was detected in aquatic flora in 2002.

4.17. Fish (Tables 17A and 17B) 4.17.1. Flounder (Table 17A)

The activity in Flounder is the same as that seen for the past decade. No activity was observed except for the naturally occurring radionuclides.

4.17.2. Fish - Other (Table 17B)

The activity in other fish is the same as that seen for the past decade. No activity was observed in this media except for naturally occurring radionuclides, including samples taken from within the quarry.

4.18. Mussels (Table 18)

Like last year, this sampling media showed no station related radioactivity at all locations.

4-10

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Opemting Report 2002 Millstone Station 4.19. Oysters (Table 19)

All locations, except for the quarry, utilize stocked oysters. Trays are kept at these sampling areas to guarantee samples and facilitate sample collection. Native oysters are sampled at the quarry (location 40X), which is an extra location.

Station related Ag-i lOnm was observed in samples from within the station discharge area (locations 32 and 40X). In general, the quarry oysters show the highest activity. Although location 32 is labeled as vicinity of the discharge, it is actually at the end of the quarry. No station related activity was observed in samples from beyond the station discharge area.

In years past, high levels of Zn-65 were typically observed in oysters caused by their distinct capacity to accumulate zinc.

Studies have shown that oysters can accumulate as much as 50 times or more the amount of zinc compared to most other sea foods (Wolfe, 1979). A remarkable dependency exists between the Zn-65 concentration measured in the native quarry oysters and the amount of Zn-65 discharged into the environment. However, since the permanent shutdown of Millstone Unit 1 in 1996, the discharges of Zn-65 in liquid effluents have dropped to no detectable activity in station discharges. Starting in 2001, no Zn-65 has been released in liquid effluents and no Zn-65 has been detected in oysters. Figure 4.19-1, shows the incredible historical trend that existed between Zn-65 releases and measured concentrations in quarry oysters. The decreasing trend in effluent radioactive releases is apparent in both the curies released and the measured concentrations in oysters.

Figure 4.19-2 shows a similar trend of Ag-I lOin concentration in quarry oysters compared with liquid effluent curies of Ag-ilOm discharged. Again, the dependency between Ag-liOm discharged and the Ag- 11 Om concentration measured in the native quarry oysters is apparent. The historical sensitivity between station measured effluent discharges of Zn-65 and Ag-i iOm when compared to environmental measured concentrations has provided a basis for Millstone to adjust the bio-accumulation factors for Zn-65 and Ag-l lOnm used in the standard industry effluent dose consequence codes. See Section 5 of this year's and previous years' Annual Radiological Environmental Operating Reports for a comparison of the two methods which has allowed for such adjustments in the past (i.e., dose from the station's measured radioactive discharges input into conservative models versus 4-11

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station actual measurements of the concentrations of radioactivity in environmental media to calculate annual dose commitment from consumption).

Because no station activity was observed at locations beyond the station discharge area and since the two locations in the quarry are on-site and not available for public use, the actual concentration of radionuclides in oysters available for public consumption is much less. The near-field dilution factor for liquid discharges from the Millstone quarry discharge is a factor of 3.

The dose consequence of the station related radioactivity via this pathway is discussed in Section 5.0.

4.20. Clams (Table 20)

Occasionally this media indicates the presence of station related radioactivity. No station related radioactivity was observed in any of the clam samples taken in 2002.

4.21. Scallops (Table 21)

Scallops are not required by the REMM. However, attempts are made to sample this media to confirm station effects because scallops are available for public consumption. No scallop samples were available in 2002.

4.22. Lobsters (Table 22)

Like last year, no station related radioactivity was detected in this sample media in 2002.

4-12

I Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Mitlstone Station Figure 4.19-1 Zn-65 COMPARISON Curie S Curies Discharged vs. Native Oyster Conc. Conc. (pCilgrarn) 0.1 101)

[+Curies Discharged I fl 1 I W Oyster Conc.

0.01

-1 0.001 1 Y tS I I _ ,ll 0.0001 0.1 0.00001 11'l 0.01 0.000001 I . 0.001 a a a a a a a a a aa a PO aQ a a a a Quarter Figure 4.19-2 Ag-110m COMPARISON Curie-s Curies Discharged vs. Native Oyster Conc. Conc. (pCi/gram) 0.1 f- Curies

__ __ _ _ _ _ _ _ _ 100 Dischargedfl 0.01 \s At 4fk # _

v 4-Oyster G Conc. l I10 I 0.001 V', r AL Jr r - =J-tsw 1mv 0.0001 U _-^ *-- A I _ I 0.1 0.00001 _

4 nw 0.01 0.000001 ........... . 0.001

-a111...................................... .. a ,-.. a .

9 a a a a a a a a 8 a a Quarter 4-13

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station

5. OFFSITE DOSE EQUIVALENT COMMITMENTS The off-site dose consequences (dose equivalent commitments) of the stations' radioactive liquid and airborne effluents have been evaluated using two methods.

The first method utilizes calculations of direct dose from sources onsite and the stations' measured radioactive discharges as input parameters into conservative models to simulate the transport mechanism through the environment to man. This results in the calculation of the maximum dose consequences to individuals. The results of these computations have been submitted to the NRC in the Radioactive Effluent Release Report written in accordance with the Radiological Effluent Monitoring Manual,Section I.F.2. This method, which is usually conservative (i.e., computes higher doses than that which actually occur) has the advantage of approximating an upper bound to the dose consequences. This is important in those cases where the actual dose consequence cannot be measured because they are so small as to be well below the capabilities of conventional monitoring techniques.

The second method utilizes the actual measurements of the concentrations of radioactivity in various environmental media (e.g., fish, shellfish) and then computes the dose consequences resulting from the consumption of these foods.

The results of both methods are compared in Table 5.1 for those pathways where a potential dose consequence exists and a comparison is possible.

The doses presented in this table are calculated at the location of maximum effect from the station effluents for that pathway and for the critical age group. For example, the external gamma dose from gaseous effluents is calculated for the site boundary location which is not only the nearest but also has the greatest directional wind frequency and fish and shellfish doses are calculated assuming they are from an area within 500 feet of the station discharge.

Summarizing the data in Table 5.1:

MAXIMUM TOTAL INDIVIDUAL DOSES:

WHOLE BODY = 0.08 mrem GI(LLI) = 0.015 mrem The organ GI(LLI) dose is essentially all attributable to the liquid pathway.

More than half of the whole body dose is due to a conservative determination of dose (-0.05 mrem) to the nearest resident as a result of direct radiation from on-site radioactive waste operation/storage facilities and continuous occupancy. The whole body and maximum organ dose 5-1

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station attributable from station effluents includes conservative assessments using Method 2.

Since the maximum dose consequence to an individual is at the location of highest dose consequence, doses will be less for all other locations. The average whole body dose to an individual within 50 miles historically is on the order of 1000 times less than the maximum individual whole body dose.

In order to provide perspective on the doses in Table 5.1, the standards for 2002 on the allowable maximum dose to an individual of the general public are given in 40CFR190 as 25 mrem whole body, 75 mrem thyroid, and 25 mrem to any other organ. These standards are a fraction of the normal background radiation dose of approximately 284 mrem per year and are designed to be inconsequential in regard to public health and safety. Since station related doses are even a smaller fraction of natural background, they have insignificant public health consequences. In fact, the station related doses to the maximum individual are less than 10% of the variation in natural background in Connecticut.

5-2

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 5.1 COMPARISON OF DOSE CALCULATION METHODS MILLSTONE POWER STATION 2002 Annual Dose (millirem)

Method 1 (1) Method 2(I Pathway Individual Organ Unit 1 Unit 2 Unit 3 Station Station (BWR) (PWR) (PWR) Total irborneEffluents

1. External Gamma Max(2 ) Whole Body 0.0017 0.016 0.010 0.028 ND(7)

Dose Direct Dose Nearest Residence Max( 2 ) Whole Body N/A N/A N/A -0.05(4) <5.2k(5) 5-3

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE 5.1 (Cont.)

COMPARISON OF DOSE CALCULATION METHODS MILLSTONE POWER STATION 2002 Annual Dose (millirem)

Max Method 1(1) Method 2(1)

Pathway Individual Organ Unit 1 Unit 2 Unit 3 Station Station (BWR) (PWR) (PWR) Total Liquid Effluents (9)

1. Fish

Adult Whole Body - 0.00021 0.00065 0.00086 ND( 3 )

Teen - 0.00019 0.00057 0.00076 Child - 0.00020 0.00058 0.00078

Adult GI(LLI)(6) - 0.0039 0.0055 0.0094 ND Teen - 0.0028 0.0040 0.0068 Child - 0.0010 0.0016 0.0026 Adult Liver - 0.00046 0.0013 0.0018 ND

Teen - 0.00047 0.0013 0.0018 Child - 0.00043 0.0012 0.0016

2. Shellfish Adult Whole Body - 0.00023 0.00054 0.00077 0.000008(8)

Teen - 0.00024 0.00054 0.00078 0.000008

Child - 0.00028 0.00066 0.00094 0.000009

Adult GI(LLI) - 0.0028 0.0021 0.0049 0.0054(8)

Teen - 0.0020 0.0015 0.0035 0.0037 Child - 0.0007 0.0006 0.0013 0.0013 Adult Liver - 0.00059 0.0016 0.0022 0.00001(8)

Teen - 0.00062 0.0016 0.0022 0.00001 Child - 0.00060 0.0016 0.0022 0.00001 54

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Notes:

1. Except for direct dose, method 1 uses measured station discharges and meteorological data as input parameters to transport-to-man models that conservatively calculate dose to people; method 2 uses actual measured concentrations in environmental media to estimate the dose.

2. Maximum individual - The maximum individual dose is the dose to the most critical age group at the location of maximum concentration of station related activity. The dose to the average individual is much less than the maximum individual dose.

3. ND - Not Detectable - No station related activity could be detected above natural background or above the minimum detectable level (MDL).

4. The dominant source of direct dose from the station is from operation/storage of radioactive waste facilities. Storage of radioactive waste in areas designated onsite is limited by design and operation to ensure that the maximum direct dose from each area at the site boundary does not exceed one millirem. Actual exposure from each throughout the year was maintained much less than this operational limit.

Each facility is monitored onsite by the Radiation Protection Department using TLDs. The exposure measured for each facility TLD was corrected for distance to the nearest site boundary residence. The resultant exposure was conservatively multiplied by 1.5 to account for skyshine. These maximum estimated doses from each facility were summed for a cumulative site commitment of approximately 0.05 millirem.

5. Measured dose was derived from monthly TLD readings. There are two residences that qualify as the closest residence, each has a TLD near enough to use as an estimate to each residence. The one with the highest average dose rate was used to estimate the direct dose to the closest residence. A background dose rate was subtracted. This background was derived from the average of the five control TLD locations. This method is very conservative assuming natural exposure influences, such as granite, are actually plant related exposure. This method provides a bounding high value. The exposure measurements of the select indicator locations are influenced by natural background exposure differences caused by the many granite out-croppings typical of the Millstone area. Historical data evaluation has shown that TLD sample locations in the vicinity of granite can be dramatically influenced by natural radioactivity contained within the granite.

6. GI (LLI) - Gastrointestinal Tract - Lower Large Intestine.

7. ND - Not Detectable - measurements for 2002 show no detectable station related activity. TLD's cannot detect levels that are such a small fraction of natural background.

8. Based on measured levels in vicinity of discharge and quarry oysters. A measured near field dilution factor of 3 was used to adjust for the fact that these oysters are on-site and inaccessible to the public. This factor adjusts the measured on-site concentration to that which could occur to a public accessible off-site location after dilution of the effluent by the Long Island Sound.

9. There were no liquid discharges from Unit 1 in 2002.

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Dominion Nuclear Connecticut, Inc. Annual Radiological Envirnmental Operating Report 2002 Millstone Station

6. DISCUSSION The evaluation of the effects of station operation on the environment requires the careful consideration of many factors. Those factors depend upon the media being affected. They include station release rates, effluent dispersion, occurrence of nuclear weapons tests, seasonal variability of fallout, local environment, and locational variability of fallout. Additional factors affecting the uptake of radionuclides in milk include soil conditions (mineral content, pH, etc.), quality of fertilization, quality of land management (e.g., irrigation), pasturing habits of animals, and type of pasturage. Any of these factors could cause significant variations in the measured radioactivity. A failure to consider these factors could cause erroneous conclusions.

Consider, for example, the problem of deciphering the effect of station releases on the radioactivity measured in milk samples. This is an important problem because this product is widely consumed and fission products readily concentrate in this media. Some of these fission products, such as I-131 and Sr-89 are relatively short-lived. Therefore they result from either station effluents, nuclear weapons tests or nuclear incidents (e.g. Chernobyl). Sr-89's lifetime is longer than I-131's, therefore it must be remembered that it will remain around for much longer periods of time. Problems are caused by the long-lived fission products, Sr-90 and Cs-137. These isotopes are still remaining from the high weapons testing era of the 1960's. This results in measurable amounts of Sr-90 and Cs-137 appearing in milk samples. Distinguishing between this "background" of fallout activity and station effects is a difficult problem.

In reviewing the historical and present Sr-90 and Cs-137 measured in cow and goat milk in the areas around Millstone station, a casual observer could notice that in some cases the levels of these isotopes are higher at farms closer to the station than at those further away from the station. The station's effluents might at first appear to be responsible.

However, the investigation of the following facts proves this conclusion wrong.

(1) The stations accurately measure many fission products, including Sr-90 and Cs-137 in their releases. Based on these measurements and proven models developed by the Nuclear Regulatory Commission, concentrations in the environment can be calculated. These calculations (generally conservative, see Section 5.0) show that insufficient quantities of Sr-90 and Cs-137 have been released from the stations to yield the measured concentrations in milk.

6-1

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station (2) Over the many years of station operation, Sr-89 has often been released in comparable quantity to Sr-90. Since they are chemically similar, comparable levels should have been detected in milk if the Sr-90 was station related. No station related Sr-89 has been detected in milk samples.

(3) Similar to Sr-89, Cs-134 can be used as an indication of station related Cs-137. Although not as conclusive as Sr-89, the lack of any measurable Cs- 134 in any of the milk samples suggests that the Cs- 137 is not station related. This is further confirmed by the evaluation of the air particulate data. The only occurrences of detectable Cs- 134 in milk resulted from the Chernobyl incident.

(4) Dairy milk sampling in Connecticut began in the 1960's, several years prior to nuclear station operation. The highest levels of weapons fallout related Sr-90 and Cs-137 (see Figures 6-1 and 6-2), were measured in the years prior to station operation. Samples taken in the immediate station areas have always shown higher levels of weapons related fallout than samples taken from the Central Connecticut Region (CT Pooled Milk). Radioactivity levels of fallout related Sr-90 and Cs-137 have decreased significantly since the 1964 Nuclear Test Ban Treaty due to decay.

(5) Local variability of Sr-90 and Cs-137 in milk is common throughout the United States. Due to the variability in soil conditions, pasturing methods, rainfall, etc., it is the rule rather than the exception.

Therefore, it is not surprising that certain farms have higher levels of radioactivity than other farms. In fact, in the past there are some cases where the farms further from the station have higher Sr-90 and Cs- 137 values than the farms that are closer to the station.

(6) In the past when a goat farm operated near Millstone (2.0 Mi - ENE),

the highest levels of Sr-90 and Cs-137 were typically indicated. This same farm also experienced the highest levels of short-lived activity from the 1976 and 1977 Chinese Tests and the 1986 Chernobyl accident. This indicates that for some unknown reason this farm had the ability for higher reconcentration. Special studies performed at this and other farms failed to find any link to the station.

Based on these facts, the observation that the station effluents are responsible is obviously false. The cause must be one or more of the other variables.

Dominion has carefully examined the data throughout the year and has presented in this report all cases where station related radioactivity could be detected. An analysis of the potential exposure to the maximum 6-2

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station individual from any station related activity has been performed and shows that in all cases the exposure is insignificant.

The Connecticut Department of Environmental Protection performs an independent check on certain environmental program analyses. The results of their analyses are comparable to the results from this program's analyses. These comparisons can be used as a cross-reference to verify measured station activity.

6-3

I Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Figure 6-1 Strontium-90 in Milk 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 Year Figure 6-2 Cesium-137 in Milk lgo~i/li er 140 + CT Pooled Milk 120 --- Haddam area Milk 100 I I A Millstone area Milk 80 60 ItI 40 I L 20 zi -.&_

0 . . . . . . . . . . . . . . . 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 Year Dairy milk is no longer available in the Millstone area, Haddam Neck no longer collects milk, and CT Pooled milk has not been collected by the State of CT since 1994. Graphs provided to show historical trends.

CY Start-up occurred: July 24,1967 NEP1 Start-up occurred: October 26,1970 M2 Start-up occurred October 17,1975 MP3 Start-up occurred: January 23,1986 6-4 CT7

Dominion Nuclear Connecticut, Inc. Annual Radiological Envirommental Operating Report 2002 Millstone Station APPENDIX A LAND USE CENSUS FOR 2002 A-i

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE A-1 Dairy Cows Within 15 miles of Millstone Point- 2002 Direction Distance Name and Address # of Cows N 14 M Kevin Dubicki 62 Wawecus Farm Dairy 226 Wawecus Hill Rd.

Norwich, CT 06360 NE 13.5 M Henry Morgan 50 Morgan Farm 512 Shewville Rd.

Ledyard, CT 06339 WNW 11 M John Tiffany II 100 Tiffany Farms 156 Sterling City Road Lyme, CT 06371 NNW 11.5 M Eugene Wilczewski 0 Salem Valley Farm Dairy 200 Darling Road Salem, CT 06420 NNW 13 M Stuart Gadbois 230 Maegog Farms 40 Old Colchester Rd.

Salem, CT 06420 NW 10.3 M Suzanne Sankow (NEW FARM) 4 Beaver Brook Farm 139 Beaver Brook Rd.

Lyme, CT 06371 Note: No cow farms on this list are used for sampling, allfarns are greater than ten miles distancefrom plant.

A-2

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE A-2 Dairy Goats Within 20 miles of Millstone Point- 2002 Direction Distance Name and Addtess # of Goats N 2M Mrs. John Mingo 5/4***

69 Spithead Road Waterford, CT 06385 LOCATION 21 N 17.3 M Crouch Family (NEW FARM) 18/7 17 Goshen Rd.

Bozrah, CT 06334 N 20 M Babe Farm 1/1 13 Jurczyk Rd.

North Franklin, CT 06264 NNE 5.2 M Allen Moran 10/9 122 Dayton Rd.

Waterford, CT 06385 LOCATION 22 NE 10.6 M Laura Behan 0/0 189 Quaker Farm Rd.

Mystic, CT 06355 NE 8.6 M Arthur Hiles 0/0 2 Daboll Rd.

Groton, CT 06340 ENE 2M Berton Smith 2/0 16 Braman Rd.

Waterford, CT 06385 ENE 13.1 M Phyllis Borges 5/3 212 Deans Mill Road Stonington, CT 06378 ENE 15.3 M Veronica Ploof 1/0 73 Palmerneck Road Pawcatuck, CT 06379

Unable To Contact As Of This Time

- Control station listed, distance greater than 20 miles from Millstone Number of Goats/Number of Milkers A-3

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE A-2 Dairy Goats Within 20 miles of Millstone Point- 2002 Direction Distance Name and Address # of Goats ENE 16.4 M Grace White 12/3 1 Providence NL Tpk.

North Stonington, CT 06359 WNW 18.1 M Virginia Marshall 7/7 178 Old Chester Rd.

Haddam, CT 06438 NW 17.3 M Kelsey Humble 6/6 98 Ballahack Rd.

East Haddam, CT 06423 NNW 18.5 M Theodore Powell 15/2 31 O'Connell Road Colchester, CT 06415 NNW 19.8 M Russell Baker 187 North Moodus Rd.

East Haddam, CT 06423 NNW 20.7 M Barkyoumb (NEW FARM) 3/3 188 Windham Ave.

Colchester, CT 06415 NNW 29 M** Kathy Waters 77/32 215 Burnt Hill Road Hebron, CT 06248 LOCATION 24

Unable To ContactAs Of This Time

- Control station listed, distance greaterthan 20 milesfrom Millstone Nuumber of Goats/Number of Milkers A-4

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE A-3 2002 Resident Survey!

Distance to Downwind Closest Resident Direction (meters)

N 1500 NNE 860 NE 790 ENE 1580 E 1500 ESE 1690 SE

SSE

S SSW

SW 3700 WSW 3190 W 2870 WNW 2470 NW 2110 NNW 780

N/A - not applicable (over water sectors).

0 Distances were measured in 2002 using GPS.

A-5

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE A-4 2002 Garden Survey0 Distance to Downwind Closest Garden Direction (meters)

N 1495 NNE 875 NE 745 ENE 1625 E 1505 ESE 2005 SE

SSE

S

SSW SW 3845 WSW 3325 W 2955 WNW 2475 NW 2295 NNW 1025

N/A - not applicable (over water sectors).

@ Distances were measured in 2002 using GPS.

A-6

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station APPENDIX B DNC QA PROGRAM B-1

Dominion Nuclear Connecticut, Inc. Annual Radiological E nvironmental Operating Report 2002 Millstone Station INTRODUCTION DNC maintains an independent non-required quality assurance (QA) program as part of the radiological environmental monitoring program (REMP). The QA program consists of contractor appraisals, quality control samples, and quality control testing of environmental TLDs.

DNC QA PROGRAM The DNC QA Program includes spikes of various sample media, duplicate samples, and TLD spikes. Sample spikes are a check on the accuracy of results of the contractor's radioanalyses. Duplicate samples tests the contractor's precision, or reproducibility of results, by comparing analytical results of split samples. The number and type of DNC QA Program quality control samples are defined in DNC Radiological Engineering Instructions RAB B-3, "Quality Control of Radiological Environmental Monitoring Program Sample Analyses" and RAB B-2, "Quality Control of the Environmental TLD Monitoring Program." An investigation is conducted on any result or trend that does not satisfy acceptance criteria.

OTHER QA PROGRAMS The DNC QA Program is not the only QA Program that monitors REMP radioanalysis performance. Other programs include:

1. Contractor lab's internal QA program. In addition to the DNC quality control samples, the radioanalysis contractor has it's own quality control samples. In total, at least five percent of the contractor's sample analyses include quality control samples.

2. Contractor lab's interlaboratary comparison program with an independent third party, Analytics, Inc. Results of the Analytics intercomparison are contained in Appendix C. Primary contractor participation in an interlaboratory comparison program is required by station Technical Specifications. The Analytics comparison satisfies this requirement.

3. Contractor lab's participation in the National Institute of Standards and Technology (NIST) Measurement Assurance Program (MAP), the Environmental Resource Associates (ERA) Proficiency Test (PT)

B-2

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station Program, the Department of Energy (DOE) Quality Assessment Program (QAP), Contractor lab's participation in the National Institute of Standards and Technology (NIST) Measurement Assurance Program (MAP), the Environmental Resource Associates (ERA) Proficiency Test (PT) Program, the Department of Energy (DOE) Quality Assessment Program (QAP), and the Mixed Analyte Performance Evaluation Program (MAPEP). The lab participates in these interlaboratory QA programs because of other clients' needs, not because of nuclear power station environmental sample analyses. However, some of these intercomparison samples are also applicable to nuclear power environmental samples.

RESULTS OF DNC QA PROGRAM FOR CONTRACTOR RADIOANALYSES Criteria for passing QA sample analysis is that the result be within 20% of the known spike except in the case of Sr-89 or Sr-90 spikes in milk which have to be within 30% of the known spike. To allow more tolerance for lower activity spikes an alternate criterion is used. If the two sigma error range of the analyzed result includes the known spike value the result passes.

The DNC QA Program indicated that the contractor lab's environmental radiological analysis program was adequate in 2002. Results are shown on Table 2. All of the TLD spike tests satisfied procedural criteria. Of 97 analysis results on QA samples, 77 passed criteria, a 79% success rate.

Sample results, which did not pass criteria, failed because of problems with the spike source or with sample preparation. There were no failures in QA sample results associated with contractor lab analyses.

B-3

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station TABLE B-1 2002 QUALITY CONTROL SAMPLES TLD Spike 12 (Note 2) 160 Milk - Strontium 3 (Note 3) 12 Milk - Iodine 4 36 Milk - Gamma (Note 4) 36 Water - Gamma 58 24 Water - Tritium 4 32 Oysters - Gamma 5 60 Vegetation/Aquatic Flora/Sediment - Gamma 0 2079 Air Particulate - Gross Beta 4 832

- Iodine 4 416

- Gamma 15 740 FOOTNOTES:

1. All samples are spikes except fish/invertebrate that are duplicate oyster samples from the Millstone quarry.

2. Each TLD spike sample is comprised of a set of 4 TLDs.

3. One sample with Sr-89 and Sr-90 and one sample with Sr-90 only.

4. Gamma in water QA spikes are treated as milk surrogates.

TABLE B-2 RFSTUITS OF 2002 OIATITY CONTROL SAMPIF. ANAL.YSES I LU) ZplKe 32 U Milk - Strontium 3 0 Milk - Iodine 4 0 Water - Gamma 49 9 Water - Tritium 4 0 Oysters - Gamma 5 0 Air Particulate Gross Beta 2 2 Iodine 1 3 Gamma 9 6 TOTALS TLDs: 12 TLDs: 0 Samples: 77 Samples: 20*

There were no failures in QA sample results associated with contractor lab analyses. Sample results, which did not pass criteria, failed because of problems with the spike source or with sample preparation.

B-4

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station APPENDIX C

SUMMARY

OF INTERLABORATORY COMPARISONS C-l

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station INTRODUCTION This appendix covers the Intercomparison Program of the Framatome ANP Environmental Laboratory as required by technical specifications. Framatome uses QA/QC samples provided by Analytics, Inc to monitor the quality of analytical processing associated with the Radiological Environmental Monitoring Program (REMP). The suite of Analytics QA/ QC samples are designed to be comparable with the pre-1996 US EPA Interlaboratory Cross-Check Program in terms of sample number, matrices, and nuclides. It was modified to more closely match the media mix presently being processed by Framatome and includes:

milk for gamma (10 nuclides) and low-level (LL) Iodine-131 analyses once per quarter,

. milk for Sr-89 and Sr-90 analyses during the 1st and 3rd quarters,

water for gamma (9 nuclides) and low-level (LL) Iodine-131 analyses during the 1st and 3rd quarters,

. water tritium analysis during the 2nd and 4th quarters,

. air filter for gamma (9 nuclides) analyses during the 2nd quarter,

air filter for gross beta analysis during the 1st and 3rd quarters, and

charcoal air filter for Iodine-131 analyses during 1st quarter.

In addition to the Analytics Intercomparison Program, Framatome also participates in other intercomparison programs that include radionuclides and media similar to those required by the station's REMP program. These programs are the National Institute of Standards and Technology (NIST) Measurement Assurance Program (MAP), the Environmental Resource Associates (ERA)

Proficiency Test (PT) Program, the Department of Energy (DOE) Quality Assessment Program (QAP), and the Mixed Analyte Performance Evaluation Program (MAPEP).

RESULTS Intercomparison program results are evaluated using FRAMATOME's internal bias acceptance criterion. The criterion is defined as within 25% of the known strontium value for samples containing both Sr-89 and Sr-90 and within 15% of the known value for other radionuclides, or within two sigma of the known value.

Any sample analysis result that does not pass the criteria is investigated by FRAMATOME.

Analytics Intercomparison Program results are included on pages C-3 through C-6 for the fourth quarter of 2001 through the third quarter of 2002. A total of 93 analysis results were obtained with 92 passing criteria, a 98.9% success rate.

Investigation is ongoing for the one failed sample analysis (see footnote in table).

C-2

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station

[ FRAMATOME ANP 2002 ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM PERFORMANCE EVALUATION

.-Ratio' Sample MRSample Q ,i Reporte tFmtKo II0gruar-erI Nu m ber 0 `Y ear Me i t I d_, ri s a u sV I e ~ ~ ~ n l ti s ~ ' v i a i E2901-162 4th/01 Water H-3 pCi/L 13510 14060 0.96 Agreement E2903-162 4th/01 Filter Gross Alpha pCi/Filter 14 16 0.88 Agreement E2903-162 4th/01 Filter Gross Beta pCi/Filter 50 48 1.04 Agreement E2902A-162 4th/o1 Filter S r-89 pCi 66 82 0.80 Agreement E2902A-162 4th/01 Filter Sr-90 pCi 54 61 0.89 Agreement E2904-162 4th/0. Milk 1-131 pCi/L 62 61 1.02 Agreement E2904-162 4th/01 Milk Ce-141 pCi/L 384 379 1.01 Agreement E2904-162 4th/01 Milk Cr-51 pCi/L 527 497 1.06 Agreement E2904-162 4th/01 Milk Cs-134 pCi/L 198 199 0.99 Agreement E2904-162 4th/01 Milk Cs-137 pCi/L 325 318 1.02 Agreement E2904-162 4th/01 Milk Co-58 pCi/L 94 90 1.04 Agreement E2904-162 4th/01 Milk M n-54 pCi/L 158 149 1.06 Agreement E2904-162 4th/01 Milk Fe-59 pCi/L 109 102 1.07 Agreement E2904-162 4th/01 Milk Zn-65 pCi/L 231 206 1.12 Agreement E2904-162 4th/01 Milk Co-60 pCi/L 353 353 1.00 Agreement E3096-186 1st/02 Milk i-131 LL pCi/L 99 90 1.09 Agreement E3096-186 1st/02 Milk Ce-141 pCi/L 32 29 1.10 Agreement E3096-186 1st/02 Milk Cr-51 pCi/L 262 241 1.09 Agreement E3096-186 1st/02 M ilk Cs-134 pCi/L 103 110 0.94 Agreement E3096-186 1st/02 M ilk Cs-137 pCi/L 248 240 1.08 Agreement E3096-186 1st/02 M ilk M n-54 pCi/L 224 202 1.11 Agreement E3096-186 Milk Fe-59 pCi/L .st/02 112 104 1.08 Agreement E3096-186 1st/02 Milk Zn-65 pCi/L 215 199 1.08 Agreement E3096-186 1st/02 Milk Co-60 pCi/L 144 142 1.01 Agreement E3097-186 1st/02 Charcoal 1-131 pCi/Filter 74 77 0.96 Agreement E3098-186 1st/02 Charcoal 1-131 pCi/Filter 65 69 0.94 Agreement E3099-186 1st/02 Charcoal 1-131 pCi/Filter 91 87 1.05 Agreement C-3

Domninion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station FRAMATOME ANP 2002 ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM I PERFORMANCE EVALUATION Year Media Nuclide Units Values Values Analytics Evaluation E3023-162 1st02 Water Gross Alpha pCi/L 56.7 53 1.08 Agreement E3023-162 1st/02 Water Gross Beta pCi/L 310.3 313 0.99 Agreement E3024-162 1st/02 Water 1-131 pCi/L 54.5 61 0.90 Agreement E3024-162 1st/02 Water I-I 31 LL pCi/L 63.4 61 1.04 Agreement E3024-162 1st/02 Water Ce-141 pCi/L 239.4 242 0.99 Agreement E3024-162 1st/02 Water Cr-51 pCi/L 175.7 198 0.89 Agreement E3024-162 1st/02 Water Cs-134 pCi/L 87.8 91 0.97 Agreement E3024-162 1st/02 Water Cs-137 pCi/L 197.7 197 1.01 Agreement E3024-162 1st/02 Water Mn-54 pCi/L 168.5 166 1.02 Agreement E3024-162 1st/02 Water Fe-59 pCi/L 87.6 86 1.02 Agreement E3024-162 1st02 Water Zn-65 pCi/L 157.2 164 0.96 Agreement E3024-162 1st/02 Water Co-60 pCi/L 114.6 117 0.98 Agreement E3026-162 1st/02 Filter Gross Alpha pCi 21.8 23 0.96 Agreement E3026-162 1st/02 Filter Gross Beta pCi 149 136 1.10 Agreement E3027-162 1st/02 Milk 1-131 pCi/L 87.9 92 0.96 Agreement E3027-162 1st/02 Milk 1-131 LL pCi/L 93 92 1.01 Agreement E3027-162 1st/02 Milk Ce-141 pCi/L 317.8 326 0.98 Agreement E3027-162 1st/02 Milk Cr-51 pCi/L 277 267 1.04 Agreement E3027-162 1st/02 Milk Cs-134 pCi/L 119 122 0.98 Agreement E3027-162 1st/02 Milk Cs-137 pCi/L 271.2 266 1.02 Agreement E3027-162 1st/02 Milk Mn-54 pCi/L 231.2 224 1.03 Agreement E3027-162 1st/02 Milk Fe-59 pCi/L 123.6 116 1.07 Agreement E3027-162 1st/02 Milk Zn-65 pCi/L 225.9 221 1.02 Agreement E3027-162 1st/02 Milk Co-60 pCi/L 152.9 158 0.97 Agreement E3028-162 1st/02 Milk Sr-89 pCi/L 79.9 83 0.96 Agreement E3028-162 1st/02 Milk Sr-90 pCi/L 24.7 27 0.93 Agreement C-4

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Repoit 2002 Millstone Station FRAMATOME ANP 2002 ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM PERFORMANCE EVALUATION Sam:ple r l.e..Fram :duart .. t o w n- ... .. atom e N um ber v T Y ear ~ 6t Med ia ' 4 N di e ~ nt ~ ~ R p ures ~ > r~ w~ yt~ NAa Sffi ~ Uo Ev-05 E3148-162 2nd/02 Water H-3 pCi/L 6970 6970 1.00 Agreem ent Non-Agreem ent E3149-162 2nd/02 Water Sr-89 pCi/L 42 64 0.66 See Note 1 E3149-162 2nd/02 Water Sr-90 pCi/L 36 39 0.92 Agreement E3150-162 2nd/02 Filter Gross Alpha pCi/L See Note 2 See Note 2 See Note 2 Agreement E3150-162 2nd/02 Filter Gross Beta pCi/L See Note 2 See Note 2 See Note 2 Agreement E3151-162 2nd/02 Filter Ce-141 pCi/Filter 59 61 0.97 Agreement E3151-162 2nd/02 Filter Cr-51 pCi/Filter 165 160 1.03 Agreement E3151-162 2nd/02 Filter Cs-134 pCi/Filter 77 82 0.94 Agreement E3151-162 2nd/02 Filter Cs-137 pCi/Filter 64 62 1.03 Agreement E3151-162 2nd/02 Filter Co-58 pCi/Filter 68 68 1.00 Agreement E3151-162 2nd/02 Filter Mn-54 pCi/Filter 69 65 1.06 Agreement E3151-162 2nd/02 Filter Fe-59 pCi/Filter 62 55 1.13 Agreem ent E3151-162 2nd/02 Filter Zn-65 pCi/Filter 131 131 1.07 Agreement E3151-162 2nd/02 Filter Co-60 pCi/Filter 82 85 0.96 Agreement E3152-162 2nd/02 Filter Sr-90 pCi/Filter 41 48 0.85 Agreement E3153-162 2nd/02 Milk 1-131 pCi/L 88 87 1.01 Agreement E3153-162 2nd/02 Milk 1-131 LL pCi/L 85 87 0.98 Agreement E3153-162 2nd/02 Milk Ce-141 pCi/L 86 90 0.96 Agreement E3153-162 2nd/02 Milk Cr-51 pCi/L 230 235 0.98 Agreement E3153-162 2nd/02 Milk Cs-134 pCi/L 121 120 1.01 Agreement E3153-162 2nd/02 M ilk Cs-137 pCi/L 89 91 0.98 Agreem ent E3153-162 2nd/02 M ilk Co-58 pCi/L 100 100 1.00 Agreem ent E31 53-162 2nd/02 Milk Mn-54 pCi.L 97 95 1.02 Agreement E3153-162 2nd/02 Milk Fe-59 pCi/L 83 81 1.02 Agreement E3153-162 2nd/02 Milk Zn-65 pCi/L 179 180 0.99 Agreement E3153-162 2nd/02 Milk Co-60 pCi/L 127 125 1.02 Agreement Note 1: CR 02-43 issued to investigate failures for Sr-89 Note 2: Filter damaged during sample preparation. No results issued.

C-5

Dominion Nuclear Connecticut, Inc. Annual Radiological Environmental Operating Report 2002 Millstone Station FRAMATOME ANP 2002 ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM PERFORMANCE EVALUATION Ratio-Sa ploqarer ~ Sa le~ e otc~ K now r 5,Frama tom e, g Number Y ar Media1Nuclid~ ;~> Urits~ Valu s ~ Val e l 4 A0yi s ~ E ~ ii to E3288-162 3rd/02 W ater Gross Alpha pCi/L 73 92 0.79 Agreement E3288-162 3rd/02 Water Gross Beta pCi/L 204 239 0.85 Agreement E3289-162 3rd/02 Water 1-131 pCi/L 68 79 0.86 Agreement E3289-162 3rd/02 W ater 1-131LL pCi/L 77 79 0.97 Agreement E3289-162 3rd/02 W ater Ce-141 pCi/L 209 214 0.98 Agreement E3289-162 3rd/02 W ater Cr-14 pCi/L 289 304 0.95 Agreement E3289-162 3rd/02 Water Cs-134 pCi/L 169 176 0.96 Agreement E3289-162 3rd/02 Water Cs-137 pCi/L 167 169 0.99 Agreement E3289-162 3rd/02 Water Co-58 pCi/L 129 130 0.99 Agreement E3289-162 3rd/02 Water Mn-54 pCi/L 206 204 1.01 Agreement E3289-162 3rd/02 W ater Fe-59 pCi/L 118 119 0.99 Agreement E3289-162 3rd/02 Water Zn-65 pCi/L 251 251 1.00 Agreement E3289-162 3rd/02 Water Co-60 pCi/L 187 199 0.94 Agreement E3291-162 3rd/02 Filter Gross Alpha pCi 58 59 0.98 Agreement E3291-162 3rd/02 Filter Gross Beta pCi 144 155 0.93 Agreement E3292-162 3rd/02 Milk 1-131 pCi/L 79 80 0.99 Agreement E3292-162 3rd/02 Milk 1-131LL pCi/L 77 80 0.96 Agreement E3292-162 3rd/02 Milk Ce-141 pCi/L 156 160 0.98 Agreement E3292-162 3rd/02 Milk Cr-51 pCi/L 231 227 1.02 Agreement E3292-162 3rd/02 Milk Cs-134 pCi/L 128 132 0.97 Agreement E3292-162 3rd/02 Milk Cs-137 pCi/L 122 127 0.96 Agreement E3292-162 3rd/02 Milk Co-58 pCi/L 95 97 0.98 Agreem ent E3292-162 3rd/02 Milk Mn-54 pCi/L 151 152 0.99 Agreem ent E3292-162 3rd/02 Milk Fe-59 pCi/L 94 89 1.06 Agreem ent E3292-162 3rd/02 Milk Zn-65 pCi/L 180 187 0.96 Agreem ent E3292-162 3rd/02 Milk Co-60 pCi/L 142 149 0.95 Agreem ent E3293-162 3rd/02 Milk Sr-89 pCi/L 84 92 0.91 Agreement E3293-162 3rd/02 Milk Sr-90 pCi/L 36 39 0.92 Agreement C-6

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