Text

Annual Radiological Environmental Operating Report
	ML061250445
Person / Time
Site:	Millstone
Issue date:	04/27/2006
From:	Price J; Dominion Nuclear Connecticut
To:	; Document Control Desk, NRC/FSME
References
	06-332
	Download: ML061250445 (120)
	v • d • e

)Dominion-Dominion Nuclear Connecticut, Inc.

Millstone Power Station Rope Ferry Road Waterford. CT 06385 APR 2 7 2006 U.S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, DC 20555 Serial No.

MPS Lic/GJC Docket Nos.06-332 RO 50-4245 50-'336 50--423 DPR-21 DPR-65 NPF-49 License Nos.

DOMINION NUCLEAR CONNECTICUT. INC.

MILLSTONE POWER STATION UNITS 1. 2, AND 3 2005 ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT This letter transmits the Annual Radiological Environmental Operating Report for the Millstone Power Station, for the period January 2005 through December 2005. This satisfies the provisions of Section 5.7.2 of Unit 1 Permanently Defueled Technical Specifications (PDTS), and Sections 6.9.1.6a and 6.9.1.3 of the Millstone Units 2 and 3 Technical Specifications, respectively.

If you have any questions or require additional information, please contact Mr. David W.

Dodscn at (860) 447-1791, extension 2346.

Very truly yours, Jrrie e

ice President - Millstone S

- tQ

Serial No.06-332 2005 Annual Radiological Environmental Operating Report Page 2 of 3 Attachments:

1 Commitments made in this letter: None.

cc:

U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Mr. A. B. Wang Project Manager U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 7E1 Rockville, MD 20852-2738 Mr. R. J. Prince NRC Inspector U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406-1415 Mr. V. Nerses Senior Project Manager U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Mail Stop 8C2 Rockville, MD 20852-2738 Mr. S. M. Schneider NRC Senior Resident Inspector Millstone Power Station

Serial No.06-332 2005 Annual Radiological Environmental Operating Report Page 3 of 3 (2copies)

Director Bureau of Air Management Monitoring & Radiation Division Department of Environmental Protection 79 Elm Street Hartford, CT 06106-5127

Serial No.06-332 Docket Nos. 50-245 50-336 50-423 License Nos. DPIR-21 DPR-65 NPFI-49 2005 Annual Radiological Environmental Operating Report Millstone Power Station Units 1, 2, and 3 Dominion Nuclear Connecticut, Inc. (DNC)

Millstone Power Station 2005 Radiological Environmental Operating Report January 1, 2005 - December 31, 2005 i,l a Ino

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44; Dominion Nuclear Connecticut, Inc.

Unit 1

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License DPR-21 DPR-65 NPF-49 Docket 50-245 50-336 50-423 Dornminion

ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT MILLSTONE POWER STATION RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 2005 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:

Millstone Station 2005 TABLE OF CONTENTS

1.

EXECUTIVE

SUMMARY

I

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 3-4

4.

DISCUSSION OF RESULTS 4-1 4.1.

Gamma Exposure Rate (Table 1) 4-1 4.2.

Air Particulate Gross Beta Radioactivity (Table 2) 44 4.3.

Airborne Iodine (Table 3) 44 4.4.

Air Particulate Gamma (Table 4A-D) 4-6 4.5.

Air Particulate Strontium (Table 5) 4-6 4.6.

Soil (Table 6) 4-f 4.7.

Cow Milk (Table 7) 4-6 4.8.

Goat Milk (Table 8) 4-7 4.9.

Pasture Grass and Feed (Table 9) 4-8 4.10.

Well Water (Table 10) 4-8 4.11.

Reservoir Water (Table 11) 4-8 4.12.

Fruits and Vegetables (Table 12) 4-9 4.13.

Broad Leaf Vegetation (Table 13) 4-9 4.14.

Seawater (Table 14) 4-9 4.15.

Bottom Sediment (Table 15) 4-12 4.16.

Aquatic Flora (Table 16) 4-12 4.17.

Fish (Tables 17A and 17B) 4-13 4.18.

Mussels (Table 18) 4-13 4.19.

Oysters (Table 19) 4-13 4.20.

Clams (Table 20) 4-14 4.21.

Scallops (Table 21) 4-15 4.22.

Lobsters (Table 22) 4-15

5.

OFFSITE DOSE EQUIVALENT COMMITMENTS 5-1

6.

DISCUSSION 6-1 APPENDIX A - LAND USE CENSUS FOR 2005 A-1 APPENDIX B - DNC QA PROGRAM B-1 APPENDIX C -

SUMMARY

OF INTERLABORATORY COMPARISONS C-1

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Executive Summary 2

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Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005

1.

EXECUTIVE

SUMMARY

The radiological environmental monitoring program for the Millstone Power Station was continued for the period January through December 2005, in compliance with the Technical Specifications and the Radiological Effluent Monitoring and Offsite Dose Calculation Manual.

The Radiological Protection and Chemistry Department of Dominion Nuclear Connecticut, Inc.

(DNC) prepared this annual report.

Radiological Protection and Environmental Services 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 charcoal filters, soil, goat milk, pasture grass, hay, well water, 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 toc consider the variability of natural and man-made sources of radioactivity, radionuclide distribution in the environment and radionuclide 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, soi].

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 exp)lain 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 88.2% based on Design Electrical Rating (DER). Unit 2 was shutdown in the second quarter for 2R16 refueling and maintenance. The annual capacity factor for Unit 3 was 86.3%. In April, Unit 3 was temporarily shutdown due to safety injection caused by a tin wisker. Unit 3 was shutdown in the third quarter for 3R08 refueling and maintenance.

In December, Unit 3 was also temporarily shutdown. The radioactive releases of gaseous effluents in 2005 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, far below permitted discharge levels and also well below levels identified as "health concerns."

No station effects were detected in terrestrial media. The predominant radlioactivity, except for a few aquatic sample results, was that from 1-1

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Repor:

Millstone Station 200' 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, Silver-lOim, Iodine -131 and Tritium. Doses from the 2005 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. Cesium-137 was also detected in several pasture grass and hay samples and all soil.

samples. These levels are the result of nuclear weapons testing in the 19130'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 0.14 millirem. This dose is 0.6 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.

1-2

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 200'

2.

PROGRAM DESCRIPTION 2.L'.

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 on Table 2-2 only lists the required samples as specified in the Radiological Effluent Monitoring and Offsite Dose Calculation.

Manual. However, in order to identify the locations of the extra samples, all locations (both required and extra) are listed in Table 2-1 and shown.

on the figures.

2-1

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Repoit 2005 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 2-I 3-I On-site - Weather Shack On-site - Bird Sanctuary 4-I On-site - Albacore Drive 5-I 6-I 7-I 8-I 9-I 10-.

11-::

12-l:

13-l_

14-C2 15-C 16-C 17-1:

21-1:

22-1 24-C 25-]:

26-C 27-]

28-]:

29-]

30-]

31-1 31-,(

32-1 32-X(

33-]

33-X 34-l 34-,(

35-1 35-X MP3 Discharge Quarry Discharge Environmental Lab Dock Environmental Lab Bay Point Beach Pleasure Beach New London Country Club Fisher's Island, NY Mystic, CT Ledyard, CT Norwich, CT Old Lyme, CT Site Boundary Goat Location #1 Goat Location #2 Goat Location #4 Within 10 Miles Beyond 10 Miles Niantic Two Tree Island West Jordan Cove Niantic Shoals Niantic Shoals Niantic Shoals Vicinity of Discharge Vicinity of Discharge Seaside Point Seaside Point Thames River Yacht Club Thames River Yacht club Niantic Bay Niantic Bay 0.3 Mi, S 0.3 Mi, NE 1.0 Mi, N 0.1 Mi, SSE 0.3 Mi, SSE 0.3 Mi, SE 0.3 Mi, SE 0.4 Mi, W 1.2 Mi, E 1.6 Mi, ENE 8.0 Mi, ESE 11.5 Mi, ENE 12.0 Mi, NE 14.0 Mi, N 8.8 Mi, W 0.5 Mi, NE 2.0 Mi, N 2.7 Mi, NE 29.0 Mi, NNW Within 10 Miles Beyond 10 Miles 1.7 Mi, WNW 0.8 Mi, SSE 0.4 Mi, NNE 1.5 Mi, NNW 1.8 Mi, NW 1.8 Mi, NW 1.8 Mi, ESE 1.8 Mi, ESE 4.0 Mi, ENE 4.0 Mi, ENE 0.3 Mi, WNW 0.3 Mi, WNW TLD, Air Particulate, Iodine, Vegetation TLD, Air Particulate, Iodine TLD, Air Particulate, Iodine, Soil TLD, Air Particulate, IMdine, Soil TLD TLD TLD TLD TLD TLD, Air Particulate, Icdine, Vegetation TLD, Air Particulate, Icdine TLD TLD TLD, Soil TLD, Air Particulate, Icdine TLD Vegetation Milk Milk Milk Fruits & Vegetables Fruits & Vegetables TLD, Air Particulate, Icdine Mussels Clams Mussels Bottom Sediment, Oysters Scallops Bottom Sediment, Oysters, Lobster, Fish, Seawater Fucus Bottom Sediment Fucus Bottom Sediment Oysters Lobster, Fish Bottom Sediment, Seawater, Clams, Fucus

'Key:

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

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

2-2

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Reporl:

2001; Location Direction & Distance Nu mber*

Location Name From Release Point"*

Sample Types 36-]

36-,X 37-C 37-w,X 38-1 39-X(

40-'<

41-]

42-1 43-1 44-1 45-1 46-1 47-1 48-I 49-1 50-I 51-I 52-1 53-1 55-1 56-1 57-1 59-I 60-I 61-1 62-1 63-I 64-I 65-1 66-X 67-X 68-Z:

69-X 70-C 71-1 72-I 73-X 74-X 75-X 76-X 77-X 78-X Black Point Black Point Giant's Neck 3.0 Mi, WSW 3.0 Mi, WSW 3.5 Mi, WSW Giant's Neck Waterford Shellfish Bed #1 Jordon Cove Bar Quarry Myrock Avenue Billow Road Black Point Onsite - Schoolhouse Onsite Access Road Old Lyme - Hillcrest Ave.

East Lyme - W. Main St.

East Lyme - Corey Rd.

East Lyme - Society Rd.

East Lyme - Manwaring Rd.

East Lyme - Smith Ave.

Waterford - River Rd.

Waterford - Gardiners Wood Rd.

Waterford - Magonk Point New London - Mott Ave.

New London - Ocean Ave.

Waterford -Miner Ave.

Waterford - Parkway South Waterford - Boston Post Rd.

East Lyme - Columbus Ave.

Waterford - Jordon Cove Rd.

Waterford - Shore Rd.

Waterford - Bank St.

NAP Parking Lot - Fitness Center Golden Spur Ram Island Pleasure Beach Background Well Onsite Well Onsite Well Site Switchyard Fence Ball Field Foul Pole Waterford - Windward Way &

Shotgun Onsite Well - ISFSI Control Onsite Well - ISFSI Indicator Onsite Well - ISFSI Indicator 3.5 Mi, WSW 1.0 Mi, NW 0.8 Mi, NE 3.2 Mi, ENE 2.4 Mi, WSW 2.6 Mi, SW 0.1 Mi, NNE 0.5 Mi, NNW 4.6 Mi, WSW 4.5 Mi, W 3.4 Mi, WNW 3.6 Mi, NW 2.1 Mi, W 1.5 Mi, NW 1.1 Mi,NNW 1.4 Mi, NNE 1.8 Mi, ESE 3.7 Mi, E 3.6 Mi, ENE 3.4 Mi, NNE 4.0 Mi, N 4.3 Mi, NNW 1.9 Mi, WNW 0.8 Mi, NE 1.1 Mi, ENE 3.2 Mi, NE 0.4 Mi, NW 4.7 Mi, NNW 9.6 Mi., ESE 0.8 Mi, E NA Onsite Onsite 0.3 Mi, N 0.6 Mi, N 0.5 Mi, NE Up-gradient of ISFSI Down-gradient of ISFSI Down-gradient of ISFSI Oysters Bottom Sediment, Fucus Bottom Sediment, Oysters, Seawater Lobster Clams Bottom Sediment, Clams, Seawater, Fucus Fish, Oysters TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD TLD Bottom Sediment Oysters Bottom Sediment Well Water Well Water Well Water TLD TLD TLD Well Water Well Water Well Water

Key:

I - Indicator C - Control X or Z - 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.

Millstone Station Annual Radiological Environmental Operating Report:

200'.

Table 2-2 Required Sampling Freguency & Tyne of Analysis Exposure Pathway No. of Sampling & Collection Type of Analysis and/or Sample LocationE 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 I--:31 on each on pasture; monthly at other sample; Sr-89 and Sr-90 on times.

quarterly composite 5a.

Pasture Grass 3

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 lTritium on monthly collection at indicator each sample.

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

6a.

Well Water 2

Semiannual Gamma Isotopic and Tritium on each sample

7.

Bottom Sediment 5

Semiannual Gamma Isotopic on each sample 7a.

Soil 3

Annually Gamma Isotopic on each sample

8.

Fin Fish-Flounder 2

Quarterly Gamma Isotopic on each sample aind 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 I LUS or I LU with two or more elements per location.

2-4

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005

.Ot~g jsland sO&ild r

TLD Monitoring (only)

U TLD and Air Monitoring (particulates & iodine)

Terrestrial Monitoring (milk, grass, fruit & vebetables, soil, or leaves)

O Aquatic Monitoring (seawater, sediment, flora, fish, mussel, oyster, clam, or lobster)

Fishers Island 2-5 C"O (

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Figure 2.1-2 Milstone SampUng Locations (Within 2 miles)

---I D

0.5 Miles

-land Chann'

[I TLD Monitoring (only)

-Twotree Is TLD and Air Monitoring (particulates & iodine)

Terrestrial Monitoring (milk, grass, fruit & vegetables, soil, or leaves)

STAY ho Aquatic Monitoring (seawater, sediment, flora, fish, mussel, oyster, clam, or lobster) i

%/,- (') Z_

2-6

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Repori 2005 2.2.

Samples Collected During Report Period The following table summarizes the number of samples of each type collected and analyzed during 2005:

Number of Number of Technical Technical Sample Type Specification Specification Number of Required Samples Required Samples Extra Samples Analyzed Analyzed Gamma Exposure 160 160 16 (Environmental TLD)

Air Particulates 416 416 0

Air Iodine 416 416 0

Soil 3

3 0

Goat Milk 54 141 0

Pasture Grass Variable2 40 0

Fruit and Vegetables 8

8 0

Broad Leaf Vegetation 6

6 12 Sea Water 16 16 0

Well Water 5

5 9

Bottom Sediment 10 10 10 Aquatic Flora 0

0 24 Fish 16 133 6

Mussels 8

74 0

Oysters 16 16 8

Clams 8

8 8

Lobster 8

8 4

Total All Types 1,150 1,146 97 I Pasture grass sampled as necessary to substitute for unavailable milk. Hay or grain was substituted when grass was not available.

2 Depends upon availability of goat milk samples 3 Due to sample unavailability, not all required fish samples could be obtained 4 Due to sample unavailability, not all required mussel samples could be obtained 2-7

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005

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.

The: mean and range measurements.

The measurements that are individual analysis.

recorded are based parentheses indicate considered above the only upon detectable the fraction of the detection limit for each 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 'X' samples collected throughout the year. These samples are taken to enhance the monitoring program, or are the results of special studies.

3-1

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis 1

Indicator Location with Highest Mean Type Total LLD Mean Name Distance Mean I No Range I Directionl Range Page I of 16 TLD (uR/r)

AP Gross Beta (Ie-3 pCi/m3)

Air Iodine (I e-3 pCi/m3)

AP Gamma (le-3 pCi/m3)

Gamma Dose Gross Beta I-131 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Mn-54 Nb-95 Ru-103 Ru-106 Zr-95 176 416 416 32 32 32 32 32 32 32 32 32 32 32 32 32 32 8.2 (156/156) 08 (4.34-12.4) 10 18.2(360/364) 11 (5.1-41.5) 70 (0/364)

(0/28) 97 (27/28) 11 (55-127)

(0/28)

(0/28) 50 (0/28) 60 (0/28)

(0/28)

(0/28) 0.3 mi SE 1.6mi ENE 1.6 mi ENE 11.9 (4/4)

(11.3-12.4) 18.8 (52/52)

(6.3-39.4)

< LLD

< LLD 110 (4/4)

(105-112)

< LLD

<LLD

< LLD

<LLD

< LLD 8.3 (20/20)

(5.96-11.3) 18.2 (52/52)

(5.8-39.3)

(0/52)

(0/4) 103 (4/4)

(89-127)

(0/4)

Dominion Nuclear Connscticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance Mean I No Range I Directioni Range Page 2 of 16 Soil (pCi/g dry)

Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 K-40 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 (0/2)

(0/2)

(0/2) 0.15 (0/2) 0.18 0.573 (2/2)

(0.425-0.72)

(0/2) 11.2 (2/2)

(8.7-13.6)

(0/2)

(0/2) 0.815 (2/2)

(0.55-1.08)

(0/2)

(0/2) 14-C

<LLD

<LLD 12.0 mi 1.1 (1/1)

NE (1.6-1.)

<LLD 1.0 mi 13.6 (1/1)

N (13.6-13.6)

< LLD

<LLD

< LLD

< LLD 12.0mi 1.23 (1/1)

NE (1.23-1.23)

<LLD

<LLD (0/1)

(0/1)

(0/1) 1.1 (1/1)

(1.1-1.1)

(0/1) 13.2 (1/1)

(13.2-13.2)

(0/1)

(0/1) 1.23 (1/1)

(1.23-1.23)

(0/1)

(0/1) 04 14-C

Dominion Nuclear Coniecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean

L Locations Type Total LLD Mean Name Distance l Mean I No Range I Directions Range Page 3 of 16 Goat Milk (pCi/L)

Ba-140 Cs-134 Cs-137 1-131 K-40 La-140 Sr-89 Sr-90 Ba-140 Pasture Grass (Hay)

(pCi/g wct) 14 14 14 14 14 14 4

4 40 40 40

.40 40 40 40 40 40 40 70 (0/1 1) 15 (0/11) 18 7.6(2/11)

(4.3-10.9) 1 (0/1 1) 1406 (11/11)

(890-1880) 25 (0/11)

(0/2) 2.64 (1/2)

(2.64-2.64)

(0/24) 1.7 (16/24)

(0.41-4.05)

(0/24)

(0/24) 0.06 (0/24) 0.08 0.098 (2/24)

(0.058-0.138)

(0/24) 21 24-C 24-C

< LLD

< LLD 29.0 mi 11(1/3)

NNW (11-11)

< LLD 29.0 mi 1710 (3/3)

NNW (1630-1840)

<LLD

< LLD 2.0 mi 2.64 (1/2)

N (2.64-2.64)

< LLD 2.7 mi 1.78 (9/16)

NE (0.41-4.05)

< LLD

<LLD

< LLD 2.7 mi 0.098 (2/16)

NE (0.058-0.138)

< LLD (0/3)

(0/3) 11 (1/3)

(11-11)

(0/3) 1710 (3/3)

(1630-184.0)

(0/3)

(0/2) 2.45 (2/2)

(2.17-2.73)

(0/16) 1.42 (13/16)

(0.63-4.41)

(0/16)

(0/16) 0.09 (2/16)

(0.089-0.0))

(0/16)

Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-5I Cs-134 Cs-137 Fe-59 22 22

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance l Mean I No Range I Directioni Range Page 4 of 16 Pasture Grass (Hay)

(pCi/g wet) 1-131 40 0.06 (0/24)

< LLD (0/16)

K40 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 40 40 40 40 40 40 40 40 40 40

.14 14 14 14 14 14 14 7.98 (24/24)

(2.76-24.8)

(0/24)

(0/24) 60 (0/13)

(0/13) 15 (0/13) 15 (0/13)

(0/13) 15 (0/13) 18 (0/13) 21 2.0 mi 12.1 (8/8)

N (2.96-24.8)

< LLD

<LLD

< LLD

' LLD 6.33 (16/16)

(2.91-10)

(0/16)

(0/1)

Well Water (pCi/L)

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245,50-336 & 50-339 Page 5 of 16 I

Well Water (pCi/L)

Fe-59 H-3 I-131 K-40 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 Ba-140 14 14 14 14 14 14 14 14 14 14 14 14 14 8

8 8

30 2000 15 15 15 15 30 30 (0/13)

(0/13)

(0/4)

< LLD

< LLD (0/1)

(0/1)

(0/4)

Fruits &

Vegetables (pCi/g wet)

Be-7 Ce-141 Ce-144 Co-58 (0/4)

(0/4)

< LLD

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean

Locations Type Total LLD Mean Name l Distance l Mean I No Range I Directions Range Page 6 of! 6 Fruits &

Vegetables (pCi/g wet)

Co-60 8

(0/4)

<LLD (0/4)

Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 (0/4) 0.06 (0/4) 0.08 (0/4)

(0/4) 0.06 (0/4) 1.79(4/4)

(0.92-2.81)

(0/4)

(0/4) 26-C

<LLD

<LLD 10+ mi 2.23(4/4)

(0.88-4.45)

<LLD

<LLD (0/4)

(0/4)

(0/4) 2.23 (4/4)

(0.88-4.45)

(0/4)

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmenta Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean

[Locations Type Total LLD Mean Name Distance l Mean I No Range I Directioni Range Page 7 of 16 Broadleaf Vegetation (pCi/g wet)

Ba-140 18 (0/18)

<LLD (0/0)

Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 18 18 18 18 18 18 18 18 18 18

.18 18 18 18 18 18 18 1.18 (11/18)

(0.45-3.61)

(0/18)

(0/18) 0.06 (0/18) 0.08 (0/18)

(0/18) 0.06 (0/18) 3.44 (18/18)

(1.93-5.23)

(0/18)

(0/18) 17 0.5 mi NE 0.6 mi NNW 1.45 (3/6)

(0.57-3.09)

< LLD

< LLD 3.61 (6/6)

(2.99-5.23)

< LLD

< LLD (0/0)

(0/0)

(010)

(0/0)

(0/0) 01

Dominion Nuclear Conrecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance Mean No Range Directioni Range Page 8 of 16 Broadleaf Vegetation (pCi/g wet)

Th-228 18 (0/18)

<LLD (0/0)

Sea Water (pCi/L)

Zn-65 Zr-95 Ba-140 Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 H-3 1-131 K40 La-140 Mn-54

Nb-95

'Ru-1 03 18 18 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 (0/18)

(0/18) 60 (0/12)

(0/12) 15 (0/12) 15 (0/12)

(0/12) 15 (0/12) 18 (0/12) 30 (0/12) 2000 1071 (11/12)

(340-3010) 15 (0/12) 273 (12/12)

(151-318) 15 (0/12) 15 (0/12) 15 (0/12)

(0/12)

<LLD

-<LLD

<LLD

<LLD 1071(11/12)

(340-3010)

<LLD 273 (12/12)

(151-318)

<LLD

<LLD (0/0)

(0/0)

(0/4)

(0/4) 256 (4/4)

(225-288)

(0/4)

(0/4) 32 32

Dominion Nudear Conrecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245,50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance l Mean I No Range I Directioni Range Pagc 9 of 16 Sea Water (pCi/L)

Bottom Sediment (pCi/g dry)

Ru-106 Sb-125 Th-228 Zn-65 Zr-95 Ag-i 10m Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 Ru-103 Ru-106 16 16 16 16 16 20 20 20 20 20 20 20 20 20 20 20 20 20 20 (0/12)

(0/12)

(0/12) 30 (0/12) 30 (0/12)

(0/18)

(0/18) 0.062 (2/18)

(0.051-0.073)

(0/18) 0.15 (0/18) 0.18 0.13 (4/18)

(0.107-0.144)

(0/18)

(0/18) 1 4.4 (18/18)

(11.9-18.2)

(0/18)

(0/18) 39-X 39-X 39-X

<LLD

<LLD 0.8 mi 0.062 (2/2)

NE (0.051-0.073)

<LLD

<LLD 0.8 mi 0.14 (2/2)

NE (0.135-0.144)

<LLD

<LLD 0.8 mi 17.4 (2/2)

NE (16.5-18.2)

<LLD

<LLD (0/4)

(0/4)

(0/2)

(0/2) 16.8 (2/2)

(15.9-17.6)

(0/2)

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RA-DIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis 1

Indicator Location with Highest Mean Locations-Type Total l

Mean Name Distance Mean No Range Direction Range Pagc 10 of 16 Bottom Sediment (pCi/g dry)

Aquatic Flora (pCi/g wet)

Sb-125 Th-228 Zn-65 Zr-95 Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 20 20 20 20 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 (0/18) 1.26 (15/18)

(0.267-5.42)

(0/18)

(0/24) 0.085 (1/24)

(0.085-0.085)

(0/24)

(0/24) 0.024 (3/24)

(0.021-0.027) 5.32 (24/24)

(3.15-6.97)

(0/24)

(0/24) 31 32-X 29 32-X

<LLD 1.8 mi 4.05 (2/2)

NW (2.68-5.42)

< LLD

<LLD

<LLD 0.085 (1/6)

(0.085-0.085)

<LLD

< LLD

<LLD 0.4 mi 0.024 (2/6)

NNE (0.021-0.027) 5.71 (6/6)

(3.77-6.94)

<LLD

<LLD (0/2) 0.285 (2/2)

(0.25-0.32.)

(0/2)

(0/0)

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245,50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance Mean I No l

Range I Directioni Range Page II of 16 Aquatic Flora (pCi/g wet)

Fish-Flounder (pCi/g wet)

Th-228 Zn-65 Zr-95 Ag-110in Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 24 24 24 7

7 7

7 0.063 (6/24)

(0.041-0.084)

(0/24)

(O/)

(0/7) 0.13 (0/7) 0.13 (0/7)

(0/7) 0.13 (o/7) 0.15 (0/7) 0.26 (0/7)

(0/7) 3.81 (7/7)

(3.6-4.16) 0.13 (0/7)

(0/7)

(O0M)

(0/7)

(0/7) 33-X 1.8 mi ESE 0.084 (1/4)

(0.084-0.084)

<LLD

<LLD 3.89 (4/4)

(3.6-4.16)

<LLD

<LLD (0/0)

(0/0)

(010)

(0/0)

(0/0) 32

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance Mean I No Range I Directioni Range Page 12 of 16 Fish-Flounder (pCilg wet)

Fish-Other (pCi/g wet)

Zn-65 Zr-95 Ag-l lOm Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 7

7 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 0.26 (0/7)

(0/7)

(0/12)

(0/12) 0.13 (0/12) 0.13 (0/12)

(0/12) 0.13 (0/12) 0.15 (0/12) 0.26 (0/12)

(0/12) 3.57 (12/12)

(3.31-4.14) 0.13 (0/12)

(0/12)

(0/12) 0.26 (0/12)

<LLD

<LLD 35 0.3 mi 3.75 (3/3)

NVNW (3.58-3.84)

<LLD

<LLD (0/0)

(0/0)

Dominion Nuclear Conrecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance Mean I No Range Direction Range Page 13 of 16 Fish-Other (pCi/g wet)

M~ussels (pCi/g wet)

Zr-95 Ag-I1 Om Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 12 7

7 7

7 (0/12)

(0/7)

(0/7) 0.13 (0/7) 0.13 (0/7)

(0/7) 0.13 (0/7) 0.15 (0/7) 0.26 (0/7)

(0/7) 1.67 (7/7)

(1.27-1.98) 0.13 (0/7)

(0/7)

(O0) 0.056 (1/7)

(0.056-0.056) 0.26 (0/7)

(0/7)

<LLD

<LLD 1.76 (3/3)

(1.56-1.98)

<LLD

< LLD

<LLD 0.056 (1/3)

(0.056-0.056)

<LLD

<LLD (0/0)

(0/0)

(0/0) 28 0.8 mi SSE 28 0.8 mi SSE

Dominion Nuclear Connecticut, Inc.

Millstone Stz.tion Annual Radiological Environmenta Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance l Mean I No Range I Directions Range Page 14 of 16 Oysters (pCi/g wet)

Ag-lOim Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 0.081 (6/20)

(0.052-0.123)

(0/20) 0.13 (0/20) 0.13 (0/20)

(0/20) 0.13 (0/20) 0.15 (0/20) 0.26 (0/20)

(0/20) 1.61 (20/20)

(1.19-2.31) 0.13 (0/20)

(0/20)

(0/20) 0.26 (0/20)

(0/20) 40-X 0.086 (4/4)

(0.052-0.123)

<LLD

<LLD 3.5 mi 1.78 (4/4)

WSW (1.49-1.96)

<LLD

<LLD (0/4)

(0/4)

(0/4) 1.78 (4/4)

(1.49-1.9E)

(0/4)

(0/4) 37-C

Dominion Nuclear Conr.ecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance l Mean I No Range I Directioni Range Page 15 of 16 Clams (pCi/g wct)

Ag-110m Be-7 Co-58 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 (0/16)

(0/16) 0.13 (0/16) 0.13 (0/16)

(0/16) 0.13 (0/16) 0.15 (0/16) 0.26 (0/16)

(0/16) 1.99 (16/16)

(1.39-2.39) 0.13 (0/16)

(0/16)

(0/16) 0.26 (0/16)

(0/16) 0.3 mi WNW

<LLD

<LLD 2.09 (4/4)

(1.72-2.39)

< LLD

<LLD

<LLD (0/0)

(0/0)

(0/0) 35-X

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM

SUMMARY

DOCKETS 50-245, 50-336 & 50-339 Analysis Indicator Location with Highest Mean Locations Type Total LLD Mean Name Distance Mean I No Range I Directioni Range Page 16 of 16 Lobsters (Crabs)

(pCi/g wet)

Ag-l 10m Be-7 Co-58 Co-60 Cr-5 1 Cs-134 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 (0/12)

(0/12) 0.13 (0/12) 0.13 (0/12)

(0/12) 0.13 (0/12) 0.15 (0/12) 0.26 (0/12)

(0/12) 2.29 (12/12)

(1.35-3.13) 0.13 (0/12)

(0/12)

(0/12) 0.26 (0/12)

(0/12) 3.5 mi WSW

<LLD

<LLD 2.38 (4/4)

(1.91-3.13)

< LLD

<LLD

<LLD (0/0)

(0/0)

(0/0) 37-X

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 NOTES FOR TABLE 3-1

For gamma measurements the Minimum Detectable Level (MDL) the Lower Limit of Detection (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 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%/b probability of falsely concluding that a blank observation represents a.

"real" signal.

For a particular measurement system (which may include:

radiochemical separation):

LLD =

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 The LLD is defined as a priori (before the fact) limit representing the capability of a measurement system and not an a posteriori (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 equation above, for composite samples taken over a period of time, the LLD is decayed to the end of the sample period.

- LLD for leafy vegetables.

LLD from the end of the sample period.

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Repoit Millstone Station 2005 3.2.

Data Tables The data reported in this section are strictly counting statistics. The reported error is two times the standard deviation (2a) 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 2cr error (i.e., the measured value exceeds 3a).

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 biELses, all the valid data are presented. This practice was recommended by Health and Safety Laboratory (HASL) ("Reporting of Analytical Results from HASL," letter by Leo B. Higginbotham) and NUREG/CR-4007 (Sept.

1984). 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 1-131

4. Air Particulates, Quantitative Gamma Spectra

5. Air Particulates, Quarterly Strontium*

6. Soil

7. Milk - Dairy Farms*

8. Milk - Goat Farms

9. Pasture Grass 1O.Well Water 1 1.Reservoir Water*

12.Fruits & Vegetables 13.Broad LeafVegetation 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.

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Ope-ating Report 2005 Table 1, Quarterly TLD Gamma Exposure Rate (uRthr)

Page I of 2 Location First Second Third Fourth Average INumber Quarter Quarter Quarter Quarter 4+/- 2 sd 01 02 03 04 05 06 07 08 09 10 11 12-C 13-C 14-C 15-C 16-C 27 41 42 43 44 45 46 47 48 49 50 51 52 53 55 56 57 59 60 61 62 63 64 65 66-X 73-X 8.19+/- 0.20 10.34 +/- 0.41 6.85 0.24 8.36 0.29 9.22 +/- 0.34 8.45 +/- 0.27 5.17 +/- 0.15 11.30+0.35 9.17 +/- 0.32 8.35 +/- 0.33 6.91 + 0.18 7.74 + 0.37 8.69 + 0.23 9.14 +/- 0.32 7.55 +/- 0.36 6.50 +/- 0.18 9.12 + 0.23 7.10 +/- 0.33 8.15 +/- 0.25 6.83 +/- 0.35 8.25 +/- 0.26 7.12 +/- 0.25 8.10+/- 0.23 8.08 0.31 9.70 +/- 0.24 7.19 0.21 7.87 +/-.0.50 6.50 +/- 0.20 7.45 +/- 0.32 7.78 +/- 0.27 7.79 +/- 0.31 7.16 + 0.35 7.36 +/- 0.27 7.88 +/- 0.27 7.32 +/- 0.19 7.45 +/- 0.35 8.39 +/- 0.35 9.97 +/- 1.03 7.71 + 0.27 8.20 +/- 0.40 7.26 +/- 0.41 9.73 +/- 0.47 8.78 +/- 0.56 11.01 +/- 0.46 7.51 +/- 0.20 8.87 +/- 0.23 10.09 + 0.41 8.43 +/- 0.46 5.08 + 0.18 12.08 +/- 0.75 10.24 +/- 0.78 9.04 +/- 0.32 7.25 +/- 0.33 7.90 +/- 0.32 9.06 + 0.41 10.03 +/- 0.34 8.19+/- 0.22 6.28 +/- 0.31 9.04 + 0.42 6.94 +/- 0.36 7.94 + 0.20 7.18 + 0.24 8.88 +/- 0.24 7.68 +/- 0.34 8.48 + 0.25 8.25 +/- 0.37 10.35 +/- 0.39 7.49 +/- 0.43 8.60 +/- 0.42 7.13 +/- 0.34 7.76 +/- 0.32 8.00 + 0.51 8.17+/- 0.31 7.05 +/- 0.26 7.57 + 0.41 8.25 +/- 0.22 7.48 +/- 0.60 7.54 +/- 0.31 8.81 +/- 0.47 9.59 +/- 0.35 8.08 +/- 0.29 8.68 +/- 0.36 7.51 +/- 0.36 9.85 + 0.26 8.34 +/- 0.45 9.79 +/- 0.31 6.74 +/- 0.26 8.51 +/- 0.24 10.26+/- 0.61 8.12 +/- 0.30 4.34 +/- 0.16 11.74+/- 0.40 9.33 +/- 0.35 8.27 +/- 0.34 6.81 +/- 0.45 7.42 +/- 0.22 9.24 +/- 0.25 9.60 +/- 0.35 7.90 +/- 0.45 5.96 +/- 0.24 8.36+/- 0.31 6.74 +/- 0.37 7.76 +/- 0.33 6.57 +/- 0.25 8.71 +/- 0.29 7.16+/- 0.34 7.31 +/- 0.30 7.45 +/- 0.25 9.61 +/- 0.29 7.13 +/- 0.25 7.42 +/- 0.25 6.26 +/- 0.25 6.88 +/- 0.28 7.60 +/- 0.23 7.34 + 0.24 6.52 +/- 0.39 6.79 +/- 0.21 8.01 +/- 0.41 6.76 +/- 0.37 6.75 +/- 0.25 7.70 +/- 0.38 8.78 +/- 0.34 7.04 +/- 0.30 7.63 +/- 0.21 6.98 +/- 0.24 9.47 +/- 0.41 8.80 +/- 0.42 10.72 +/- 0.51 7.03 +/- 0.38 8.99 + 0.41 10.27 + 0.72 8.66 +/- 0.45 5.42 +/- 0.31 12.37 +/- 0.55 9.41 +/- 0.45 9.95 +/- 0.71 8.91 + 0.41 8.06 + 0.46 11.26 +/- 0.55 10.26 +/- 0.48 8.46 +/- 0.42 6.71 +/- 0.43 9.36 +/- 0.53 7.57 +/- 0.37 8.81 +/- 0.44 7.47 +/- 0.42 8.98 +/- 0.50 8.02 +/- 0.38 8.86 +/- 0.40 8.72 +/- 0.66 10.41 +/- 0.66 8.47 +/- 0.70 8.94 +/- 0.42 7.13 - 0.45 8.08 +/- 0.39 8.62 +/- 0.37 8.44 +/- 0.39 7.17 +/- 0.32 8.13 +/- 0.35 8.72 t 0.36 7.92 +/- 0.36 8.47 +/- 0.50 9.02 +/- 0.47 10.15 +/- 0.59 8.62 +/- 0.44 8.69 +/- 0.78 7.61 +/- 0.40 10.05 +/- 0.72 8.53 ::0.54 10.47 +/- 0.91 7.03 0.59 8.68 0.51 9.96 :' 0.87 8.42 :' 0.39 5.00 : 0.80 11.87 +/- 0.80 9.54 :t 0.83 8.90*: 1.35 7.47 : 1.69 7.78:: 0.47 9.56:: 2.00 9.76 :- 0.86 8.03 :- 0.68 6.36:: 0.56 8.97 : 0.74 7.09:: 0.61 8.17:: 0.79 7.01: 0.68 8.71- 0.56 7.50: 0.75 8.19:: 1.15 8.13- 0.91 10.02 +/- 0.73 7.57 +/- 1.07 8.21: 1.19 6.76 d: 0.77 7.54 1: 0.89 8.00 +/- 0.77 7.94 4: 0.83 6.98 ': 0.53 7.46 0.96 8.22': 0.64 7.37 0.83 7.55 d: 1.22 8.48 1.01 9.62 +/- 1.05 7.86+/-: 1.15 8.30 +/-: 0.87 7.34 +/-: 0.49 9.78 d: 0.42

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 1, Quarterly TLD Gamma Exposure Rate (uR/hr)

Page 2 of 2 Location First Second Third Fourth Average Number Quarter Quarter Quarter Quarter 1 2 s.d.

74-X 75-X 7.56 +/- 0.41 7.43 i 0.32 7.71 i 0.46 7.66 +/- 0.27 7.41 +/- 0.37 6.99 +/- 0.27 8.46 i 0.35 7.72 +/- 0.40 7.79 i 0.81 7.45 it 0.57

Dominion Nuclear Connecticut, Inc.

Annual Radiolog Millstone Station Table 2, Air Particulate Gross Beta Radioactivity (le-3 pCi/m3) ical Environmental Operating Report 2005 Pagel of4 Collection Date Locations JANUARY 12/27-01/02 01/03-01/09 01/10- 01/16 01/17- 01/23 01/24-01/30 FEBRUARY' 01/31 -02/06 02/07 - 02/13 02/14-02/20 02/21 -02/27 MARCH 02/28 - 03/06 03/07 - 03/13 03/14 - 03/20 03/21 -03/27 QtrAvg42sd JANUARY 12/27-01/02 01/03 - 01/09 01/10- 01/16 01/17-01/23 01/24-01/30 FEBRUARY 01/31 -02/06 02/07 - 02/13 02/14 - 02/20 02/21 -02/27 MARCH 02/28 - 03/06 03/07 - 03/13 03/14 - 03120 03/21 -03/27 01 30.1+/-4.5 18.1+/-3.7 25.0+/-4.2 23.1 +/- 4.2 19.0+/- 3.9 01 21.8 +/- 4.0 19.0+/-4.1 13.0*4.0 15.1 +/-3.9 01 19.7 +/- 4.2 14.1*4.1 20.4 +/- 3.9 13.3 +/- 3.9 19.4

9.5 15-C 32.0

5.2 19.6 +/- 4.3 16.5

4.4 27.7 +/- 4.9 17.1 *4.4 15-C 22.8

3.9 18.3 +/-4.1 12.6* 4.1 16.6* 4.1 15-C 21.1*4.4 12.3 +/- 4.4 17.8 *4.1 14.7

3.8 02 35.7

5.0 16.4 +/- 3.8 19.2 +/- 4.0 23.3 4.3 20.1 4.1 02 19.2 +/- 4.0 22.0 +/- 4.4 14.6 +/- 4.2 18.7

4.2 02 18.6 +/- 4.2 16.6 +/- 4.5 16.9 +/- 3.9 13.0 +/- 4.0 19.6 +/- 10.8 27 26.2 +/- 5.0 18.8 +/- 4.2 24.1 +/-4.7 23.9 +/- 4.8 18.6 +/- 4.5 27 16.9 +/- 3.6 20.4

4.0 14.2 +/- 3.9 16.0

3.8 27 18.6 +/- 3.9 14.9 +/- 4.0 18.0 +/- 3.7 13.3 +/- 3.8 18.8 +/- 7.6 03 25.7

4.3 17.7 +/- 3.8 23.7 +/- 4.3 25.4

4.4 19.4 +/- 4.1 03 20.0 +/- 4.1 17.5 +/- 4.2 14.5 +/- 4.2 15.8 4.

4 03 22.5

4.5 12.5 +/- 4.3 21.2 +/- 4.1 15.3 +/- 4.3 19.3 +/- 8.1 04 31.5 +/- 4.4 17.2 +/- 3.6 20.7 +/- 3.8 22.8

4.0 19.9+/-3.9 04 20.9 +/- 3.8 23.1 *4.2 15.7 +/- 4.0 15.0 +/- 3.8 04 22.1 *4.2 17.6 +/- 4.3 18.8

3.8 12.3 +/- 4.0 19.8

9.2 10 31.8 +/- 4.3 19.3 +/- 3.5 25.1i4.0 27.1+/-4.1 17.8 +/- 3.7 10 21.0 +/- 3.8 22.7 +/- 4.1 16.2 +/- 3.9 16.4 +/- 3.7 10 21.5 +/- 4.1 12.0* 3.9 20.1+3.7 14.1+/-3.8 20.4

10.5 11 31.1

4.7 17.0 +/- 3.8 20.0 +/- 4.1 20.7 4.2 21.4 +/- 4.2 11 18.5 +/- 3.9 15.8 +/- 4.1 14.9 +/- 4.2 15.8 +/- 4.0 11 21.7 +/- 4.3 16.1 *4.3 22.0 +/- 4.1 13.4 +/- 4.0 19.1 *8.8 QtrAvg42sd 19.2* 10.9

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 2, Air Particulate Gross Beta Radioactivity (le-3 pCi/m3)

Pagc 2 of 4 Collection Date Locations APRIL 03/28 - 04/03 04/04 - 04/10 04/11 - 04/17 04/18 - 04/24 MAY 04/25 - 05101 05/02 - 05/08 05/09 - 05/15 05/16 - 05/22 05/23 - 05/29 JUNE 05/30 - 06/05 06/06 - 06/12 06/13 - 06/19 06/20 - 06/26 Qtr Avg 4 2 sd 01 9.8+/-3.4 20.6 +/- 4.2 16.5 +/- 4.0 13.5+3.9 01 17.0+/-3.9 8.5+/-3.3 11.2 +/- 3.7 7.6 +/- 3.5 5.0 +/- 4.8 01 15.2 +/- 3.9 20.4 +/- 3.4 6.1 +/- 3.6 18.7+/- 4.0 13.8+/- 9.7 02 12.0 +/- 3.8 17.3 +/- 4.3 13.3 +/- 4.1 17.0 +/- 4.3 02 13.7 +/- 4.0 8.6 +/- 3.1 9.5 +/- 3.4 9.3 +/- 3.3 A

8.5+/-2.7 02 12.9 +/- 3.6 16.2 +/- 3.1 6.4 +/- 3.3 13.9 +/- 3.6 12.2 +/- 6.7 03 6.9+/- 3.5 17.8+/- 4.4 13.7+/- 4.2 18.0 +/- 4.4 03 14.8 +/- 4.1 9.6 +/- 3.3 11.3 +/- 3.7 8.6 +/- 3.5 10.0 +/- 2.9 03 16.0+/- 4.0 17.2 +/- 3.2 5.1 3.3 19.3 +/- 3.9 12.9 +/- 9.0 04 10.8+/- 3.5 18.8 +/- 4.2 13.2 +/- 4.0 17.8 +/- 4.2 04 13.1 +/- 3.9 5.6+/- 3.1 10.1 +/- 3.7 9.3 +/- 3.5 6.6 +/- 2.8 04 13.3 +/- 3.9 19.5 +/- 3.4 6.2 +/- 3.5 18.9+/- 4.1 12.6+/-9.6 10 8.9 +/- 3.2 16.9 +/- 3.9 13.2 +/- 3.7 17.8 +/- 4.0 10 12.8 +/- 3.6 7.8+/-3.1 9.1 +/- 3.5 9.0 +/- 3.4 8.3 +/- 2.8 11 11.7 +/- 3.6 18.6 +/- 4.2 14.3 +/- 4.1 19.4 +/- 4.3 11 14.4 +/- 3.9 8.3 +/- 3.1 10.2 +/- 3.4 7.1 +/- 3.2 7.8 +/- 2.6 10 13.5 +/- 3.7 19.9 +/- 3.3 6.5 + 3.4 15.9 +/- 3.7 12.3 +/- 8.4 11 12.4 +/- 3.5 19.9 +/- 3.2 6.3 +/- 3.3 18.4 +/- 3.8 13.0 +/- 9.5 APRIL 03/28 - 04/03 04/04 - 04/10 04/11 -04/17 04/18 - 04/24 MAY 04/25 - 05/01 05/02 - 05/08 05/09 - 05/15 05/16 - 05/22 05/23 - 05/29 JUNE 05/30 - 06/05 06/06 - 06/12 06/13 - 06/19 06/20- 06/26 QtrAvg42 sd 15-C 9.9 +/- 3.3 16.5 +/- 3.9 15.0 +/- 3.9 19.6 +/- 4.1 15-C 11.2 +/- 3.6 10.9+/- 3.4 13.2 +/- 3.8 6.7 +/- 3.5 5.8 +/- 2.8 15-C 11.4 +/- 4.1 23.2 +/- 3.9 7.6 +/- 4.2 20.5 +/- 4.0 13.2+/- 10.5 27 9.5 +/- 3.3 17.2 +/- 3.9 11.7 +/- 3.6 19.5 +/- 4.0 27 12.5: +/-3.7 8.9 +/- 3.2 10.6 +/- 3.6 7.0 +/- 3.3 7.3 +/- 2.8 27 13.7 +/- 3.8 18.6 +/- 3.3 5.0 +/- 3.4 23.0 +/- 4.2 13.3 +/- 9.9

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 2, Air Particulate Gross Beta Radioactivity (le-3 pCi/m3)

Page 3 of 4 Collection Date Locations JULY 06/27 - 07/03 07/04 - 07/10 07/11 -07/17 07/18 - 07/24 07/25 - 07/31 01 8.7+/-3.5 16.4+/-4.0 14.3+/-3.8 19.4+/- 3.3 23.8 +/- 4.3 02 7.3+3.2 13.3 +/- 3.6 13.2 +/- 3.6 17.5 +/- 3.0 14.8 +/- 3.7 03 10.5 +/- 3.5 15.0+/- 3.8 11.4+/-3.6 20.3 +/- 3.3 20.7 +/- 4.2 04 10.7+/-3.6 14.7 +/- 3.9 11.3 +/- 3.8 22.7 +/- 3.5 20.6 +/- 4.3 10 10.7+/-3.5 16.0 +/- 3.8 14.3 +/- 3.7 20.1 +/- 3.2 21.5 +/- 4.0 11 10.6+/-3.4 16.2+/- 3.7 13.8 +/- 3.6 19.7+/-6.0 B

20.2 +/- 3.8 AUGUST 08/01 - 08/07 08/08 - 08/14 08/15 - 08/21 08/22 - 08/28 SEPTEMBER 08/29 - 09/04 09/05 - 09/11 09/12 - 09/18 09/19 - 09/25 QtrAvg :2sd JULY 06/27 - 07/03 07/04 - 07/10 07/11 - 07/17 07/18 - 07/24 07/25 - 07/31 01 31.4 +/- 4.6 25.7 +/- 4.3 15.6 +/- 3.9 10.8 +/- 3.6 01 18.1 +/-5.6 26.2 +/- 5.9 18.0 +/- 3.4 22.1 +/-4.5 19.3+/- 12.4 15-C 12.2 +/- 3.5 15.8 +/- 3.9 17.9+/-4.0 20.9 +/- 3.4 24.6+/- 4.4 02 29.7 +/- 4.4 22.2 +/- 3.9 14.7+/- 3.7 13.6 +/- 3.5 02 13.1 +/-5.0 21.1 +/- 5.4 19.2 + 3.2 20.9 +/- 4.1 17.0+/- 10.9 03 31.8 +/- 4.7 27.6 +/- 4.4 17.5 +/- 4.0 12.4 +/- 3.7 03 18.4 +/- 5.7 24.4+/-5.9 17.8+/-3.4 20.0 +/- 4.3 19.1 +/- 12.0 04 35.4 +/- 4.9 23.9 +/- 4.3 15.6 +/- 5.7 11.4+/- 3.7 04 13.7+/-5.5 34.5 +/- 6.6 20.1 +/-3.6 20.8+/- 4.4 19.6+/- 15.6 10 33.4 +/- 4.5 25.7 +/- 4.1 18.8 +/- 3.9 11.9 +/- 3.5 10 15.1 +/- 5.2 24.2 +/- 5.7 19.3 +/- 3.3 22.7 +/- 4.4 19.5+/- 11.9 11 34.1 +/-4.4 27.4 + 4.1 18.9 +/- 3.9 14.6+/- 3.6 HI 18.3 +/- 5.4 28.5 +/- 5.8 39.4+/-4.8 C

25.8 +/- 4.6 22.1 +/- 16.2 27 12.0 +/- 3.6 16.6+/- 3.9 14.5 +/- 3.7 20.9 +/- 3.3 21.0 +/- 4.2 AUGUST 08/01 - 08/07 08/08 - 08/14 08/15 - 08/21 08/22 - 08/28 15-C 27.3 +/- 4.6 30.7 +/- 4.6' 15.7 +/- 4.0 15.3 +/- 3.9 27 35.2 +/- 4.8 29.1 +/-4.5 17.9 +/- 4.1 13.9+/- 3.7 SEPTEMBER 08/29 - 09/04 09/05 - 09/11 09/12 - 09/18 09/19 - 09/25 QtrAvg42sd 15-C 19.4 +/- 5.8 24.6 +/- 5.9 19.6 +/- 3.5 26.6 +/- 4.8 20.8 +/- 10.7 27 14.2+/- 5.4 30.5 +/- 6.2 20.0 +/- 3.4 18.9+/- 4.3 20.4+/- 13.7

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 2, Air Particulate Gross Beta Radioactivity (le-3 pCi/m3)

Page 4 of 4 Collection Locations Date OCTOBER 01 02 03 04 10 11 09/26-10/02 20.3+/-4.2 16.4+/-3.7 19.1 +/-4.0 22.3+/-4.3 19.1 +/-4.0 18.8+/-4.0 10/03 - 10/09 12.2 +/- 3.8 12.8 3.6 12.0 +/- 3.6 13.3 +/- 3.8 12.7 +/- 3.7 21.1 +/- 6.9 D

10/10- 10/16 5.1 3.6 6.2+/-3.4 6.6+/-3.7 3.4+/-3.6 6.9+/-3.6 6.3+/-3.3 10/17-10/23 15.2+/-4.0 14.1+/-3.6 13.5+/-3.8 14.2+/-4.0 14.7+/-3.8 13.7+/-3.6 10/24-10/30 20.7:1:4.3 15.5+/-3.8 17.6+/-4.1 16.1 +/-3.5 20.0+/-4.2 18.3+/-3.9 NOVEMBER 01 02 03 04 10 11 10/31 - 11/06 26.9+/-4.2 26.0+/-4.2 24.5 +/-4.1 26.6+/-3.9 30.1 +/-4.7 26.9+/-:4.4 11/07-11/13 21.5+/-5.5 26.3+/-5.9 18.9+/-5.2 21.9+/-4.8 25.9+/-6.3 25.2+/-5.9 11/14-11/20 20.5+/-4.0 21.0+/-4.2 20.3+/-3.9 16.7+/-3.6 20.8+/-4.4 19.8+/-4.1 11/21 - 11/27 12.2 +/- 3.6 11.2 +/- 3.6 12.0 +/- 3.4 13.3 +/- 3.5 11.7 +/- 3.9 13.3 +/- 3.9 DECEMBER.

0 1 02 03 04 10 11 11/28-12/04 20.2 +/-4.0 20.9+/-4.1 17.8+/-3.8 19.5+/-3.9 16.8+/-4.1 16.2+/-3.9 12/05 - 12/11 29.6 +/- 3.7 31.9 +/- 3.8 28.3 +/- 3.5 30.3 +/- 3.5 30.1 +/- 4.0 27.9 +/- 3.7 12/12-12/18 23.1 +/-4.0 26.9+/-4.3 27.1 +/-3.9 25.6+/-3.9 26.3+/-4.5 25.8+/-4.3 12/19-12/25 41.5+/-5.1 40.4+/- 5.1 40.7+/-4.8 36.3+/-4.6 39.7+/-4.9 38.6 +/-5.2 QtrAvgI2 sd 22.0+/- 15.4 20.7+/- 18.1 19.9+/-16.9 21.3+/-13.9 21.1 17.4 20.9+/- 15.7 AnnAvg+/-2sd 18.6+/- 13.3 17.4+/- 14.0 17.8+/- 13.3 18.3+/- 14.1 18.3 14.4 18.8+/- 14.8 OCTOBER 15-C 27 09/26 - 10/02 16.8 +/- 4.1 20.5 +/- 4.1 10/03 - 10/09 11.3 +/- 3.8 19.9 +/- 4.0 10/10 - 10/16 7.1 3.9 7.5 +/- 3.7 10/17-10/23 13.7 4.3 9.2+/-3.6 10/24 - 10/30 19.2 4.6 15.0 +/- 3.9 NOVEMBEIS 15-C 27 10/31 - 11/06 28.0 +/- 4.0 25.4+/-4.5 11/07 - 11/13 22.1 +/- 5.2 19.9+/-5.8 11/14-11/20 18.0+/- 3.7 23.2+/-4.3 11/21 - 11/27 15.2+/-3.5 16.5+/-4.1 DECEMBER 15-C 27 11/28-12/04 15.8+/-3.5 15.9+/-4.0 12/05 - 12/11 28.2 +/- 3.4 26.1 +/-4.8 E

12/12 - 12/18 21.6 +/- 3.7 22.8 +/-4.2 12/19 - 12/25 39.3 +/- 4.8 40.9 +/- 5.3 Qtr Avg L 2 sd 19.7 +/- 16.1 20.2 +/- 16.2 Ann Avg 4 2 sd 18.2 +/- 13.6 18.3 +/- 13.6

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 3, Airborne Iodine 1-131 (le-3 pCi/m3)

Page l of 4 Collection Date Locations JANUARY 12/27 - 01/02 01/03 -01/09 01/10 - 01/16 01/17 - 01/23 01/24 -01/30 01 5* 17 9*23 7* 14

-5* 16 1

17 02

-4 +/- 1S II +/- 25 5 +/- 17

-12 *20

-9 19 03

-9* 18 5+/-23 7* 15

-13

19

-12 +/- 21 04 3 *20

-4* 27 2* 12

-4* 14 8* 17 10 15

17 4+/-22 8 +/- 15

-6* 17 I

17 11 6*21 16*24 9+/-21

-21 *21 9*24 FEBRUARY 01/31 - 02/06 02/07 - 02/13 02/14 - 02/20 02/21 - 02/27 MARCH 02/28 - 03/06 03/07 - 03/13 03/14 - 03/20 03/21 - 03/27 JANUARY 12/27 - 01/02 01/03 -01/09 01/10 -01/16 01/17 - 01/23 01/24 - 01/30 01 lI l 19

-1 20 4

14

-3 + 18 02 2*23 l +/- 25

-7

20 4 +/- 14 03

-5*21 4*22 19+ 17

-15 +/-20 04 2*23

-l

19 5

19 10 15 10 12 t21

-7 +/- 22 2* 17 3* 17 11 7

20

-9* 19 0* 18 2*20 01

-10i19 1 +/-21

-13

20 5

19 02 0+/-21

-16

24

-2* 16

-5i 17 03

-4

20

-8* 19 7*26 6* 16 04

-11 23

-3* 21 0*24

-18* 16 10 0* 17 19* 19 6t20 22 +/- 18 11 4* 18 10 +/-21

-16

24

-15 18 15-C 7

25

-13 +/- 29 4+/-22

-15 +/- 21 9+/- 24 27

-26+ *28 5

28 0 +/- 17 9 18 10+/- 22 FEBRUARY 01/31 - 02/06 02/07 - 02/13 02/14 - 02/20 02/21 - 02/27 MARCH 02/28 - 03/06 03/07 - 03/13 03/14 - 03/20 03/21 - 03/27 15-C

-4*22

-9* 20 5 i 15 13 *23.

27

-8 +/- 25

-6*20 13 +/- 14

-8* 17 15-C

-8

23

-1 *28 10* 27 2 i 15 27 24*22 6*22 6*25 0 +/- 14

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 3, Airborne Iodine 1-131 (le-3 pCi/m3)

Locations Page 2 of 4 Collection Date APRIL 03/28 - 04/03 04/04 - 04/10 04/11 - 04/17 04/18 - 04/24 01

-3 +/- 19

-2* 18 3* 16 6+21 MAY 04/25 - 05/01 05/02 - 05/08 05/09 - 05/15 05/16 - 05/22 05/23 - 05/29 01

-7* 18

-11 +/- 16 16 +/- 22 2+ 17

-8 +/- 18 A

02

-3 +/- 23

-2 +/- 16

-9 +/- 16

-2 +/- 20 02

-9 +/- 20 12* 17 14+/- 26 17

17

-4* 15 02 2+/- 18 7* 19 3 +/- 17 3 +/- 19 03

-17* 23 18

18

-11

15 11

23 03

-9 22

-2 +/- 15

-21

28

-4

18 4

20 03

-4 + 15

-10 +/- 28

-4* 15

-6+/-21 04 6

22 0 *19 14*1:18 15*24 04 22 +/- 21 7

14 8*28

-14

18 8

16 04

-11

17 6+/-31 6*22 0* 16 10 21

20

-2* 17

-16* 15 3

20 10 7+/-21 5

17 11

22

-5 +/- 16 6

16 11

-12 +/- 21 5 +/- 16 22 +/- 27 2

14

-5

18 11 8

21 19+/-23 2* 15

-4

20 JUNE 05/30 - 06/05 06/06 - 06/12 06/13 - 06/19 06/20 - 06/26 01 0* 16 4

26 3+ 19

-8

25 10 4* 18 26 +/- 24

-23 +/- 25

-7

20 11 2* 17

-7+/- 26 6+/- 23

-3* 19 APRIL 03/28 - 04/03 04/04 - 04/10 04/11 - 04/17 04/18 - 04/24 15-C

-16* 16 5* 18

-15* 19 8

23 MAY 04/25 - 05/01 05/02 - 05/08 05/09 - 05/15 05/16 - 05/22 05/23 - 05/29 15-C

-3

19

-5

16 3* 30 7+ 15 0* 17 27

-2

23 5

16 11

13 11

18 27

-4 +20

-11

19

-6

25

-7*b 12 2*23 27

-4

16 19*24

-20

24

-22* 19 JUNE 05/30 - 06/05 06/06 - 06/12 06/13 - 06/19 06/20 - 06/26 15-C 8* 17 15 +/- 25 21 +/-22

-3* 19

Dominion Nuclear Connecticut. Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 3, Airborne Iodine 1-131 (le-3 pCi/m3)

Page3 of4 Collection Date Locations JUllY 06/27 - 07/03 07/04 - 07/10 07/11 -07/17 07/18- 07/24 07/25 - 07/31 01

-1 +/-20

-1 +/- 19

-5+/- 17

-30+/-28

-19 +/- 20 AUGUST 08/01 -08/07 08/08 - 08/14 08/15-08/21 08/22 - 08/28 01

-10+23 5+/- 17 0+/- 17 7+/-20 02 2+/- 20

-13 +/- 16

-2+/-15 4+/-25 11 +/- 13 02 13 +/- 22 8+/-17 7+/- 18 10+/- 18I 02

-5 +/-20

-3+/-15 7+/- 14 4 +/- 21 03 2 +/- 22

-9 +/-18 23 +/- 15 13 +/- 28 II +/- 18 03 34 +/- 28 20+19

-4+/-21

-7+/- 17 03 2+/-20 7+/-20

-1

+/- 19 4+/-+ 23 04

-10+/- 20

-5+/-19 6+/- 18 5 +/- 29 1+/- 21 04 26 +/- 33

-2 +/- 20

-4+/-20

-13 +/- 20 04 2 +/- 19 13+/-17 8+/-21 15 +/- I1 10

-7+/- 21

-3 +/- 20 9 +/- 17 18+/- 27 10+/- 17 10

-6+/-27 7+/-12

-7+/-15 3+/-14 11 23 +/- 21

-2+/- 19

-5+/-12

-31+/-35 B

-5+/- 17 11

-14+/- 20

-2+ 17

-7 +/- 15 2 +/- 15 SEPTEMBER 08/29 - 09/04 09/05 - 09/11 09/12 -09/18 09/19 - 09/25 01 4+/-19

-6 +/- 16 15+/- 25 1 +/- 21 10 9+/-18

-5+/-16

-3+/- 20 101 22 11

-4+/- I15 1+/-20

-2+/-21 C

-2+/- 23 JULY 06/27-07/03 07/04 - 07/10 07/11 - 07/17 07/18 - 07/24 07/25 - 07/31 15-C 2+/- 17

-7+/- 17

-2 +/- 18

-8 +/- 24

-8+/- 17 27

-8+/-19

-20 +/- 21

-11 +/- 17

-2 +/-26 3 +/- 19 AUGUST 08/01 -08/07 08/08 - 08/14 08/15 - 08/21 08/22 - 08/28 SEPTEMBER 08/29-09/04 09/05 - 09/11 09/12 - 09/18 09/19 - 09/25 15-C 0 +/- 29

-11 + 18

-4+/- 18

-7+/- 18 27

-3 +/-20

-4+/-15 7+/- 17 0+/-23 15-C 16+/- 18

-5 +/- 20

-21 +/-22 13+/-

+23 27

-4+/-19 0+/-18

-3 +/- 19

-12+/-+ 19

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 3, Airborne Iodine 1-131 (le-3 pCi/m3)

Page 4 of 4 CollecUon Date Locations OCTOBER 09/26-10/02 10/03 - 10/09 10/10- 10/16 10/17-10/23 10/24-10/30 01

-9+/-21 2+/-22 8 +/- 23

-13 + 29

-11 +/- 18 02 23 +/- 21

-7+/- 19

-15 +/- 25 4+/-21

-15 18 03

-4 +/- 22 3+/-20

-4 +/- 26 13 +/- 19

-20+/- 18 04 10+/-23

-4+/- 17 13+/-29

-4+/-20

-12+/- 17 10

-2+/- 14

-1 +/- 20

-17+/-25 2+/- 18 2+/- 17 11 12+/- 18

-2 +/- 27

-6 +/- 23 3 +/- 15

-2+/- 13 D

NOVEMBER 10/31 - 11/06 11/07-11/13 11/14 - 11/20 11/21 - 11/27 01

-8 +/-19 0 +/- 26 7+ 13 0+/- 13 02

-11 +/-20 5+/-28 6 +/- 14

-8+/- 17 03

-4+/- 20

-I +/- 22 11 +/- 14 7+/- 11 04

-3+/- 18 10+/- 22 4 +/- 13 I +/- 16 10 9+/-20 14+/- 31 9+/- 17 0+/- 18 11

-7+/- 18 15+/- 26 3 +/- 13 7+/- 15 DECEMBERF 11/28 - 12/04 12/05-12/11 12/12-12/18 12/19-12/25 OCTOBER 09/26-10/02 10/03 - 10/09 10/10- 10/16 10/17-10/23 10/24 - 10/30 NOVEMBER' 10/31 - 11/06 11/07 - 11/13 11/14 - 11/20 11/21 - 11/27 01 0+/- 17 2 +/-17 4 +/- 20 0 +/- 25 02 2+/- 16

-I +/- 17

-14 +/- 19 7+/-24 03

-21 +/- 17

-6+/- 18 4+/- 19.

-9 +/- 21 04 8 +/- 16

-7+/- 21

-7+/- 18

-8+/- 18 10 6 +/- 15 8 +/- 20

-16+/-24

-9 +/- 21 11

-11 +/- 17 4+/-20

-16+/- 22

-7 +/- 21 15-C 23 +/- 18

-18 +/- 23 4 +/- 24

-11 +/-25

-8+/- 19 27

-6+/- 20

-7 +/- 21 8+/-27 2+/- 17 12+/- 22 15-C 10+/- 19

-9+/-25 4 +/- 12 4 +/- 16 27

-2+/-21 IS+/-27

-3 +/-15 2+/- 18 DECEMBER 11/28 - 12/04 12/05 - 12/11 12/12-12/18 12/19-12/25 15-C

-21 +/-20

-6+/- 16 13 +/- 21

-9+ 28 27 5+/-21 4+/-26 7 +/- 24 0+/-30 E

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 4-A, Air Particulates Gamma Spectra - Quarter 1 (le-3 pCi/m3)

Page 1 of I Location Isotope Bit-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 01 5.0+ 11.0 110.0 38.0

-4.1 +/-4.5

-0.4+/-5.6

-0.1 + 1.8

-0.8+/-0.9 13.0+/-30.0 02 5.0 + 24.0 95.0 38.0 1.0 +/- 4.5 3.8 +/- 5.4 0.5 +/- 1.9

-0.8 +/- 1.2

-18.0 +/- 46.0 03

-11.C'+/- 16.0 127.0+/-41.0

-1.7+/-4.3 6.3+/-6.4

-0.4+ 1.8

-0.8+/- 1.2 18.0+41.0 04 0.0 21.0 95.0 35.0

-0.9 +/- 5.0 2.4 +/- 5.1 0.6 +/- 1.3 0.0 +/- 0.7

-13.0 + 26.0 10

-1O.C 20.0 121.0 35.0

-1.8 +/- 4.6 4.1 + 5.1

-0.8 + 1.7

-0.3 +/- 1.0 0.0 +/- 28.0 1 1

-5.0 24.0 112.0 39.0 0.0 +/- 4.5 0.0 +/- 4.8 1.3 +/- 1.6 1.1 +/- 1.6

-7.0 +/- 43.0 15-C 17.0+/-26.0 127.0+/-41.0

-0.4+/-5.0

-0.4+/-5.7 0.2+/- 1.6

-0.9+/- 1.4 11.0+32.0 27

-16.0+/-29.0 126.0+/-37.0

-3.0+/-4.7 1.2+/-4.3 1.5+/- 1.7

-0.5+/-0.7 0.0+/-35.0 Cs-134 Cs-137 Mn-54 Nb-95 Ru-103 Ru-106 Zr-95 01 0.6 +/- 1.0 1.2 + 1.0

-0.2 +/- 1.3 1.8 + 3.4 2.1 2.9

-4.0 + 11.0

-1.2 +/- 2.9 02 1.1 +/- 1.1

-0.1 + 0.9 0.2 +/- 1.2 0.0 +/- 4.0

-1.4 2.5 6.0 +/- 11.0

-0.3 + 2.7 03

-0.4 +/- 0.9

-0.4 + 0.9

-0.7 +/- 1.1 0.0 +/- 4.3

-1.8 2.6

-4.2 9.8 0.8 +/- 3.1 04 0.2 + 1.2 0.7 +/- 0.9

-0.5 +/- 0.8 1.2 +/- 2.9 1.7 3.0 7.0 +/- 13.0

-1.1 +/- 3.1 10 0.1+/- 1.0 0.3+/- 1.0 0.2+/- 1.1 0.8+/-3.4 0.0+/-2.8

-10.0 10.0

-1.6+/-2.5 11 0.0 + 1.1

-0.5 +/- 1.2

-0.5 +/- 1.2 0.6 +/- 4.4

-0.4 3.0 7.0 +/- 12.0 0.7+/- 2.3 15-C 0.1 + 1.1

-0.4 + 1.0 0.2 +/- 0.8 4.7 +/- 4.5

-0.4 3.1

-11.0 12.0 0.8+/- 3.2 27

-0.4 + 1.1 0.2 +/- 1.1 0.5 +/- 1.2 1.5 +/- 4.2 0.4 2.2

-3.0 12.0 1.3 +/- 2.9

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 4-B, Air Particulates Gamma Spectra - Quarter 2 (le-3 pCi/m3)

Page I of I Location Isotope 01 02 03 04 10 11 15-C 27 01 02 03 04 10 11 I5-C 27 Ba-140

-13.0 +/- 37.0

-18.0 +/- 32.0 13.0+/- 18.0 25.0 t 25.0

-12.0-+/- 17.0

-12.0 +/- 17.0

-25.0 +/- 25.0 6.0:t 21.0 Cs*-134

-0.4 +/- 1.2 0.6 +/- 0.9 0.1 t 1.0 0.0 +/- 1.2 0.1 : 1.1

-0.7 :11.1 0.8 +/- 1.0

-0.4 : 1.2 Be-7 55.0 +/- 35.0 64.0 +/- 35.0 74.0 t 37.0 75.0 +/- 34.0 90.0 +/- 34.0 105.0+/- 35.0 103.0 t 41.0 92.0 +/- 37.0 Cs-137

-0.5 +/- 1.3

-0.3 +/- 1.0 0.8 1.1

-0.1 +/- 1.0 0.4 +/- 1.1

-0.7 +/- 0.9 0.9 +/- 0.7 0.3 t 1.2 Ce-141

-0.1 4.4 3.6 t 5.4 2.7 t 4.9 2.0 +/- 5.0

-2.4 +/- 4.7

-1.1 +/- 4.5 2.0 +/- 5.2

-0.8 +/- 4.8 Mn-54

-0.4 t1.2

-0.6 +/- 0.8

-0.7 +/- 1.1

-0.4 +/- 1.2 0.4+/- 0.9

-0.5 +/- 1.2

-0.4+/- 0.9 0.2 +/- 0.7 Ce-144

-0.4 +/- 5.3

-3.2 +/- 4.7 0.8 +/- 5.2

-4.2 +/- 5.2

-0.6 +/- 4.4 0.3 +/- 4.8

-0.4 +/- 4.5 3.3 +/- 4.8 Nb-95

-4.2 +/- 4.6

-1.9 +/- 4.1 1.6 +/- 3.7

-1.5 +/- 3.8 2.1 +/-4.1

-0.5 +/- 3.4

-1.2 +/- 3.1

-2.5 +/- 3.6 Co-58

-1.5 +/- 2.2 0.7+/- 1.4 0.1 +/- 1.2

-0.2 +/- 1.5 0.5 +/- 1.8

-0.7 +/- 1.2

-1.0+/- 1.8

-1.4 +/- 1.9 Ru-103

-0.4 +/- 2.9 0.0 +/- 3.3

-1.1 +/- 2.3

-0.4 +/- 2.3 0.7+/- 2.9 0.7 +/- 2.5

-0.8 +/- 3.2

-1.5 +/- 2.9 Co-60 0.1 +/- 1.6 0.1 +/- 1.3

-0.6 +/- 1.3

-0.1 +/- 1.0

-0.1 + 1.5 0.2+/- 1.0

-0.4 +/- 1.3

-0.1 +/- 1.0 Ru-106

-7.0 + 14.0 1.0+/- 11.0 2.0 +/- 10.0 7.0+ 14.0 4.4 + 9.7 3.0+ 10.0 0.0+/- 11.0 0.0+/- 12.0 Cr-51 4.0 +/- 49.0

-29.0 +/- 37.0 4.0 +/- 36.0

-15.0 +/- 40.0

-14.0 +/- 36.0

-18.0 +/- 39.0 8.0 +/- 46.0 4.0 +/- 36.0 Zr-95

-0.1 +/- 3.6

-1.6 +/- 3.4

-1.3 +/- 2.7 1.3 t 3.0 2.5 +/- 4.0 0.9-+/- 3.6 2.6+/- 4.0 0.3 +/- 2.8

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 4-C, Air Particulates Gamma Spectra -Quarter 3 (le-3 pCi/m3)

Page I of I Location Isotope 01 02 03 04 10 11 I5-C 27 01 02 03 04 10 11 15-C 27 Ba-140 4.0 +/- 19.0 4.0 1:13.0 4.0 +/- 19.0 4.0 +/- 15.0 0.0 + 16.0

-4.4 +/- 8.8 4.0 i 25.0 8.0 +/- 12.0 Cs-134 0.0 +/- 1.2 0.1 +/- 1.0

-0.4 + 1.0 1.6 +/- 1.4 0.3 +/- 1.2 0.9 +/- 1.5

-0.1 +/- 0.9 0.3 +/- 0.9 Be-7 96.0 +/- 35.0 75.0 +/- 32.0 88.0 +/- 32.0 126.0 +/- 39.0 96.0 +/- 36.0 112.0 37.0 89.0 +/- 36.0 104.0 +/- 32.0 Cs-137

-0.4+/- 1.3 1.2 +/- 1.2

-0.2 +/- 1.0 0.9 + 1.1

-0.8 +/- 1.0

-0.2+/- 1.1

-0.3 +/- 1.3

-0.6+/- 1.1 Ce-141

-3.3 +/- 4.6

-0.3 +/- 4.0 2.9 +/- 3.9 1.1+/- 4.2

-2.0 +/- 4.0

-2.6 + 4.6

-0.4 +/- 4.2

-0.7 +/- 4.7 Mn-54 0.4 +/- 1.2

-0.7 +/- 0.9

-0.5+/- 1.3

-0.7+/- 1.1 0.5+/- 1.1 0.0+/- 1.2

-1.2 +/- 1.3

-0.9+/- 1.3 Ce-144

-0.4 + 5.4

-0.8 + 4.8

-0.4 + 5.2 5.1 4 6.1 0.0 +/- 5.0 4.7 + 5.6 2.1 + 5.6

-3.2 + 5.9 Nb-95

-0.4 + 3.6 0.7 +/- 2.8

-1.8 + 3.1 0.7 +/- 2.8

-0.1 +/- 3.1 0.3 + 3.0

-1.1 +/- 2.7 2.1 +/- 2.9 Co-58

-0.5 +/- 2.0

-1.3 +/- 1.7

-0.1 +/- 1.6 1.0 i 1.8 0.9 +/- 1.7 0.4 +/- 1.7 0.2 +/- 1.9 0.7 +/- 1.5 Ru-103 1.0 +/- 2.7

-0.3 +/- 2.4

-1.0+/- 2.4 0.7 +/- 2.9 0.6 +/- 2.5 1.0+/- 2.3 3.0 +/- 2.7

-0.3 +/- 2.7 Co-60 0.4+/- 1.0 0.8 +/- 1.1 0.4 +/- 1.2

-0.8 +/- 0.9 0.2 +/- 0.8 1.0 +/- 1.0

-0.1 +/- 1.2

-0.5 +/- 0.7 Ru-106

-7.0+/- 11.0 4.0+/- 12.0 3.0+/- 11.0 4.0+/- 11.0

-12.4 +/- 9.5

-8.0+/- 16.0 2.0+/- 13.0 0.2 +/- 9.7 Cr-51

-.3.0 +/- 34.0 0.0 +/- 26.0

-3.0 +/- 35.0 6.0 + 35.0 3.0+/- 27.0 3.0 +/- 36.0 6.0 + 33.0

-9.0 +/- 33.0 Zr-95

-0.2 +/- 2.8

-1.5 +/- 2.7

-1.3 +/- 1.5 0.3+/- 2.8

-1.6+/- 2.5 0.4 +/- 3.5 0.2+/- 2.4

-0.6 +/- 3.0

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 4-D, Air Particulates Gamma Spectra - Quarter 4 (le-3 pCi/m3)

Page I of I Location Isotope 01 02 03 04 10 11 15-C 27 01 02 03 04 10 11 15-C 27 Ba.140 24.0 -t 42.0 0.0:t 44.0

-8.0:1:26.0 0.0 : 30.0 25.0 +/- 29.0 0.0:L 23.0

-31.0 t38.0 51.0 t48.0 Cs-4134 0.5 t 1.1 0.5 +/- 1.2 0.0 t 1.2 0.5 +/- 1.2

-0.2 t 1.3 0.6 + 1.0 0.1 t0.9

-0.8 +/- 1.3 Be-7 96.0 +/- 39.0 58.0 +/- 38.0 97.0 +/- 38.0 123.0 :141.0 98.0 +/- 38.0 109.0 +/- 40.0 91.0 +/- 36.0 54.0 +/- 41.0 Cs-137

-0.5 t 1.1

-0.3 t 0.9

-0.7 1 1.2 0.1 +/- 0.9

-0.3 +/- 1.2

-0.3 +/- 1.0.

-0.3 +/- 1.0

-1.0 +/- 1.2 Ce-141 5.0 t 5.9 1.1 t5.9 1.1 t5.9 1.7 +/- 5.5

-1.3 t 6.3 3.6 +/- 5.7

-0.8 t 5.7

-0.5 t 6.8 Mn-54

-1.1 t 1.1

-0.2 t 1.3

-0.4 t 1.2

-0.5 +/- 1.2 0.4 t 1.4

-0.2 t 1.6 0.7 +/- 1.4

-0.4 t 1.5 Ce-144

-4.8 t16.1

-0.4 +/- 6.4 2.1 +/- 5.9 3.7 +/-5.8 2.3+/-6.1

-4.1 +/- 6.5

-1.3 +/- 6.2

-1.4 +/- 6.2 Nb-95

-3.5 +/-5.0

-2.0+/- 3.9

-0.5 +/- 3.0

-4.0 +/- 3.9

-3.3 +/- 4.1

-1.4 +/- 4.7

-1.9+/- 4.2

-2.2 +/- 3.9 Co-58

-0.4+/- 1.9 0.5 +/- 2.0

-1.5 +/- 2.1 0.0 +/- 2.0 1.2 +/- 2.3 1.4 +/-1.8

-0.4 +/- 1.9

-1.1+/- 2.0 Ru-103

-3.2 t 3.7 2.2 +/- 4.3 0.1 +/-4.2 3.7 t 3.2 1.8+/- 3.5

-0.7 +/- 4.2

-0.1 +/- 3.4

-1.2 +/- 4.2 Co-60

-0.6 t 1.5

-1.1 +/- 1.1 0.6+/- 1.3

-0.1 +/- 1.0

-0.1 +/- 1.1

-0.1 +/- 1.5

-0.1 +/- 1.2

-0.6 1.1 Ru-106

-6.0 +/- 11.0 5.2 +/- 8.3

-11.0+/- 12.0 2.2 + 7.0

-2.0 +/- 14.0 0.0+/- 13.0 4.9 +/- 9.3

-5.0 +/- 11.0 Cr-Sl

50.0 +/- 46.0 29.0 +/- 44.0 28.0 +/- 44.0

12.0 +/- 39.0

-4.0 +/- 44.0

.13.0 +/- 49.0

-12.0 + 43.0

-9.0 +/- 47.0 Zr-95 2.7 +/- 3.9 2.1 +/-4.0 2.1 +/-3.9 0.6+/- 4.2

-2.5 +/- 3.7 1.6+/- 4.1

-0.1+/- 3.6

-0.6+/- 4.4

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 6, Soil (pCi/g dry)

Page I of I Location Collection Isotope Date 03 Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 03/29,'05 0.08 +/- 0.45

-0.01 + 0.08 0.04 +/- 0.26

-0.03 +/- 0.05 0.00 + 0.04 0.41 +/- 0.51 Cs-134 Cs-137 Fe-59 K-40 Mn-54 Nb-95 03/29,'05 0.01 +/- 0.06 0.72 +/- 0.11 0.03 +/- 0.07 8.70 +/- 1.40

-0.01 +/- 0.04 0.01 +/- 0.05 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/29,'05 0.01 +/- 0.05

-0.06 +/- 0.32 0.06 +/- 0.10 0.55 +/- 0.20

-0.03 +/- 0.12

-0.04 +/- 0.06 04 Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 03/29105 0.16 +/- 0.18 0.01 +/- 0.04 0.06+/- 0.12

-0.02 +/- 0.02 0.01 +/- 0.02 0 15 +/- 0.22 Cs-134 Cs-137 Fe-59 K-40 Mn-54 Nb-95 03/29Y05 0.01 +/- 0.07 0.43 +/- 0.05

-0.02 +/- 0.05 13.60 +/- 0.81 0.00 + 0.02 0.04+/-0.04 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/29/05 0.00 +/- 0.02 0.07 +/- 0.17 0.01 +/- 0.05 1.08 + 0.08 0.04 +/- 0.09 0.04 +/- 0.04 14-C Be-7 Ce-141 Ce-144 Co-58 Co-60 Cr-51 03/29/05

-0.04 +/- 0.47 0.02 +/- 0.10

-0.29 +/- 0.30 0.01 +/- 0.04 0.00 +/- 0.04

-0.12 +/- 0.59 Cs-134 Cs-137 Fe-59 K-40 Mn-54 Nb-95 03/29/05 0.00 + 0.04 1.10 +/- 0.12 0.00 +/- 0.10 13.20 +/- 1.30

-0.01 +/- 0.04

-0 04 +/- 0.06 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/29/05

-0.04 L 0.05 0.12 + 0.35

-0.03 +/- 0.13 1.23 + 0.19

-0.06 + 0.17 0.02 h 0.08

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 8, Goat Milk (pCiIL)

Page I of I Location Collection Date Isotope 21 Ba-140 Cs-134 Cs-137 1-131 K-40 La-140 04/27/05 05/11/05 05/25/05 06/08/05 06/22/05 07/06/05 07/20/05 08/03/05 08/17/0S 09/07/05 09/28/05 2.40 +/- 7.00

-3.90 1 5.00

-3.10 +/- 5.10 3.00 +/- 3.90 3.60 +/- 6.00

-1.40 + 4.90

-2.90+/- 4.10 0.10+/- 5.50

-6.50+ 6.10 2.40 +/- 5.80

-1.50 +/- 6.40 1.00 +/- 5.30

-1.50 + 3.70

-2.90 +/- 3.20

-0.50 + 3.40

-0.30 +/- 5.30 0.00 +/- 3.80

-1.30 +/- 2.40

-1.70 +/- 3.40 2.00 +/- 3.30 4.90 + 4.00 0.00 +/- 4.10 2.20 +/- 4.60 2.90 + 3.90 3.50+/- 4.00 2.50 +/- 3.10 1.50+/- 5.10 10.90 +/- 5.10 4.30 +/- 2.20 5.10+/- 3.80 0.10 +/- 3.20 2.80 +/- 4.10 2.00 +/- 3.90 0.13 +/- 0.22 0.07 +/- 0.20 0.21 +/- 0.28 0.35 +/- 0.48

-0.06 +/- 0.02 0.06 +/- 0.24

-0.07 +/- 0.02

-0.05 + 0.02

-0.08 +/- 0.02 0.09 +/- 0.19

-0.06 +/- 0.02 1880.00 +/- 200.00 1790.00 +/- 150.00 1680.00 +/- 110.00 1250.00 + 110.00 1600.00 + 190.00 1390.00+ 140.00 1276.00 + 85.00 1170.00 +/- 120.00 1350.00 + 110.00 890.00 +/- 110.00 1190.00 +/- 140.00 2.70 +/- 8.00

-4.50 4 5.80

-3.50 +/- 5.90 3.50 + 4.40 4.10 + 6.90

-1.60 + 5.70

-3.30 +/- 4.70 0.10 +/- 6.40

-7.50 + 7.00 2.70 +/- 6.60

-1.70 + 7.30 Sr-89 06/22/)5 4.50 +/- 3.40 09/28/)5 3.90 +/- 4.30 Ba-140 Sr-90 2.64 +/- 0.80

-0.30 +/- 1.00 24-C Cs-134 Cs-137 1-131 K-40 La-140 05/251)5 06/08/1)5 07/06/4)5 3.90 +/- 6.70

-2.10+/- 4.60 1.30 +/- 4.90 2.20 +/- 5.00 3.00 +/- 3.10 1.80 +/- 4.10 2.50 +/- 4.90 11.00 +/- 4.20 5.30 +/- 4.20 0.01 + 0.18 1630.00 +/- 180.00 4.40+/- 7.70 0.07 + 0.26 1840.00 + 120.00

-2.40 +/- 5.30 0.08 +/- 0.29 1660.00 +/- 140.00 1.50 + 5.60 Sr-89 06/08/05 4.60 +/- 4.70 07/06/)5

-2.70 +/- 6.20 Sr-90 2.73 +/- 0.92 2.17+/- 0.95

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 9, Pasture Grass (pCi/g wet)

Page I of 4 Locaffon Collection Date Isotope 21 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 01/26,'05 0.000 +/- 0.044 F 02/23/05 -0.034 +/- 0.066 F 03/16,'05 0.017 +/- 0.035 F 04/13/05 -0.048 +/- 0.059 F 10/12,05 0.013 +/- 0.032 10/26,05 -0.022 +/- 0.031 11/16/'05 0.016 +/- 0.039 12/14/05 0.025 +/- 0.093 F Cr-51 01/26`05 0.150 +/- 0.240 02/23/05 -0.030 +/- 0.230 03/16i05 -0.080+/- 0.160 04/13/05 -0.050 + 0.280 10/12j05 -0.160+/- 0.140 10/26)05 -0.090 + 0.160 11/16/05 0.030 +/- 0.150 12/14/05 0.070 +/- 0.270 La-140 1.680 +/- 0.330 0.027 +/- 0.044

-0.120 +/- 0.110 0.005 +/- 0.027 0.005 +/- 0.029 1.260 4 0.330

-0.004 4 0.033

-0.020 + 0.089

-0.011 +/- 0.031 0.047 +/- 0.037 0.590 +/- 0.230 0.016 +/- 0.024

-0.022 +/- 0.075

-0.014 +/- 0.023 0.009 +/- 0.030 0.450 +/- 0.260

-0.024 +/- 0.052 0.080 +/- 0.120 0.001 +/- 0.031

-0.016 +/- 0.030 1.560 +/- 0.360 0.001 +/- 0.021 0.017 +/- 0.068

-0.019 +/- 0.026

-0.01 8 +/- 0.029 2.390+/- 0.410 0.011 +/- 0.023

-0.058 +/- 0.077

-0.008 +/- 0.017 0.008 +/- 0.019 3.220 +/- 0.410 0.000 +/- 0.018 0.023 +/- 0.058

-0.007 +/- 0.019 0.028 +/- 0.023

-0.060 +/- 0.240

-0.013 +/- 0.036

-0.055 +/- 0.097

-0.015 +/- 0.031 0.020 + 0.036 Cs-134 Cs-137 Fe-59 I-131 K-40 0.020 + 0.032 0.029 4 0.027

-0.007 +/- 0.077 0.040 +/- 0.067 24.'300 +/- 0.970 0.011 +/- 0.030

-0.005 + 0.029 0.010 + 0.110 0.006+/- 0.067 16.6i0 0+/- 1.100 0.028 +/- 0.034 0.037 +/- 0.034

-0.040 +/- 0.080 0.005 +/- 0.027 17.100 +/- 1.100 0.028 +/- 0.031 0.013 +/- 0.028

-0.008 +/- 0.099 0.053 +/- 0.084 19.700 +/- 1.100 0.000 +/- 0.024 0.007 + 0.024

-0.026 +/- 0.049

-0.002 +/- 0.001 2.960 +/- 0.780 0.000 + 0.016 0.010 +/- 0.018

-0.021 +/- 0.044 0.041 +/- 0.045 3.200 +/- 0.620

-0.008 +/- 0.020

-0.006 +/- 0.018 0.049 +/- 0.046

-0.001 +/- 0.010 3.940 +/- 0.680 0.009 +/- 0.031 0.009 +/- 0.028 0.030 +/- 0.091 0.040 +/- 0.120 8.600 +/- 1.200 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 01/26/05 0.000 + 0.050 02/23/05 -0.039 +/- 0.076 03/16/05 0.020 +/- 0.041 04/13/05 -0.056 +/- 0.068 10/12/05 0.015 + 0.037 10/26/05 -0.025 + 0.036 11/16/05 0.019 +/- 0.045 12/14/05 0.030 +/- 0.110 Th-228 01/26/05 0.040+/- 0.120 02/23/05 0.088 +/- 0.070 03/16/05 0.150+/- 0.140 04/13/35 0.000 4 0.120 10/12/05 0.074 +/- 0.087 10/26/35 0.046 +/- 0.076 11/16/35 -0.006 +/- 0.053 12/14/35 0.060 +/- 0.099 Ba-140

-0.006 +/- 0.026 0.035 +/- 0.033 0.000 +/- 0.028

-0.100 +/- 0.240

-0.007 +/- 0.060 0.015 +/- 0.029

-0.009 +/- 0.037

-0.016 +/- 0.029 0.090 +/- 0.240

-0.032 +/- 0.062 0.012 +/- 0.025 0.021 +/- 0.027

-0.014 +/- 0.019

-0.100 +/- 0.190 0.023 + 0.053

-0.020 +/- 0.029

-0.025 + 0.041 0.011 +/- 0.032 0.100 +/- 0.280

-0.028 +/- 0.068 0.014 +/- 0.020

-0.009 +/- 0.021

-0.010 +/- 0.021

-0.020 +/- 0.200 0.014 + 0.047 0.010 I

0.018

-0.011 + 0.017

-0.010 +/- 0.016

-0.090 +/- 0.150 0.030 +/- 0.042 0.012+/- 0.019

-0.021 +/- 0.023

-0.007+/-0.018

-0.060+/-0.140 0.028+/-0.044 0.005 + 0.022

-0.011 + 0.047

-0.022 +/- 0.035

-0.080 +/- 0.240 0.023 +/- 0.067 Zn-65 Zr-95

-0.031 +/- 0.098 0.041 + 0.049

-0.040 + 0.072

-0.004 + 0.057 0.010 +/- 0.066 0.017 +/- 0.044

-0.035 +/- 0.077

-0.039 +/- 0.053 0.007 + 0.052 0.014 +/- 0.036

-0.032 +/- 0.047 0.011 +/- 0.031 0.029 +/- 0.040 0.003 +/- 0.033 0.090 + 0.160 0.018 +/- 0.063 22 Be-7 Ce-141 Ce-144 Co-58 Co-60 04/13/05 -0.026 +/- 0.058 F 0.210 +/- 0.210 0.017 +/- 0.030 0.027 + 0.081

-0.024 +/- 0.029 0.012 +/- 0.033 04/27/05 0.013 +/- 0.035 F 0.170 + 0.160 0.009 +/- 0.035 0.026 + 0.091

-0.002 +/- 0.021 0.020 +/- 0.021 05/11/05 0.003 +/- 0.018 1.100 +/- 0.300

-0.036+/- 0.021 0.059 +/- 0.085 0.000+/- 0.018

-0.013 +/- 0.020 05/23/35 -0.007+/-0.045 0.320+/- 0.300 0.015 0.033 0.030+/- 0.110 0.007+/- 0.022 0.01)3 +/- 0.022 06/08/15 0.035 +/- 0.090

-0.030 +/- 0.320 0.039 +/- 0.047 0.040 +/- 0.120

-0.025 +/- 0.029 0.005 +/- 0.031 06/22/05 0.016+/- 0.038 0.120 +/- 0.210

-0.007 0.030

-0.061 +/- 0.099

-0.012 +/- 0.021 0.01)0 +/- 0.026 07/06/')5 0.005 +/- 0.026 1.010 + 0.250 0.011 +/- 0.024 0.055 + 0.083

-0.006 +/- 0.020 0.01)7 +/- 0.019 07/20/1)5 0.044 +/- 0.066 0.540 +/- 0.430

-0.033 +/- 0.037 0.008 +/- 0.086 0.016 +/- 0.025

-0.022 +/- 0.034 08/03/4)5 0.022 +/- 0.029 0.490 +/- 0.220

-0.017 +/- 0.023

-0.077 +/- 0.074

-0.012 +/- 0.017

-0.012 +/- 0.025 08/17/0)5 0.050 +/- 0.120 1.700 +/- 0.470 0.079 +/- 0.053 0.000 +/- 0.130

-0.025 +/- 0.035 0.00)8 +/- 0.031 09/07/05 0.007 + 0.036 F 0.410 +/- 0.240

-0.059 +/- 0.046

-0.012 +/- 0.092 0.000 +/- 0.022 0.017 +/- 0.026 09/29/1)5 -0.026+/- 0.078 2.590+/- 0.510 0.018 +/- 0.042 0.010 + 0.110 0.013 +/- 0.029

-0.006 +/- 0.031

Dominion Nuclear Connecticut. Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 9, Pasture Grass (pCi/g wet)

Isotope Page 2 of 4 Location Collection Date 22 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 10/12A1)5 -0.003 +/- 0.019 1.520 +/- 0.260 10/26/1)5 0.007 +/- 0.038 4.050 +/- 0.530 11/16/1)5 -0.005 +/- 0.043 3.180 + 0.460 12/14/)5 -0.036 4 0.099 F 0.030 +/- 0.280

-0.003 +/- 0.017

-0.014 + 0.052

-0.007 +/- 0.012

-0.021 +/- 0.022

-0.004 +/- 0.072 0.016+/- 0.023 0.016 + 0.027 0.074 +/- 0.080

-0.012 4 0.023 0.015 +/- 0.032

-0.030 +/- 0.089 0.000 +/- 0.031 Cr-51 Cs-134 Cs-137 Fe-59 1-131 04/13/0)5 -0.010 + 0.220

-0.007 +/- 0.030 04/27/05 -0.090+/- 0.190

-0.006+/- 0.022 05/11/0)5 -0.010 + 0.150 0.017 +/- 0.022 05/23/)5 0.170 +/- 0.230 0.010 +/- 0.026 06/08/)5 0.250 + 0.370 0.000 A 0.032 06/22/)5 0.030 +/- 0.170

-0.018 +/- 0.027 07/06/)5 0.120 +/- 0.150 0.001 +/- 0.021 07/20/05 0.030 +/- 0.240 0.010 +/- 0.032 08/03/)5 -0.050 + 0.160 0.006 +/- 0.020 08/17/)5 -0.220 +/- 0.380 0.017 +/- 0.033 09/07/05 0.050 +/- 0.190 0.001 +/- 0.024 09/29/)5 0.000 +/- 0.280 0.008 +/- 0.027 10/12/0)5 -0.010 +/- 0.110

-0.004 +/- 0.014 10/26/05 -0.030 +/- 0.160 0.024 +/- 0.025 11/16/05 -0.010 +/- 0.180 0.012 +/- 0.023 12/14/05 -0.020 +/- 0.270

-0.007 +/- 0.031 0.027 +/- 0.025

-0.034 +/- 0.090 0.060 +/- 0.058 0.009 +/- 0.019

-0.021 +/- 0.067 0.005 +/- 0.018 0.001 4 0.020 0.035 +/- 0.063

-0.002 +/- 0.001 0.021 +/- 0.020

-0.018 +/- 0.063

-0.005 +/- 0.002

-0.001 +/- 0.026 0.030 +/- 0.100

-0.007 +/- 0.002 0.138 +/- 0.046

-0.016 +/- 0.067 0.016 +/- 0.028 0.058 +/- 0.026 0.010 +/- 0.052

-0.002 + 0.006 0.020 + 0.029 0.057 + 0.074 0.001 +/- 0.013 0.017 + 0.020 0.011 + 0.054

-0.003 + 0.001 0.031 +/- 0.028 0.020 +/- 0.110

-0.003 +/- 0.001 0.005 + 0.019

-0.017 +/- 0.062

-0.007 +/- 0.003 0.030 + 0.030 0.034 +/- 0.069

-0.002 +/- 0.001

-0.009 + 0.013

-0.016 +/- 0.029

-0.002 +/- 0.001 0.026 +/- 0.022 0.006 +/- 0.055 0.003 +/- 0.012 0.002 +/- 0.023

-0.018 +/- 0.046

-0.006 +/- 0.002

-0.009 +/- 0.028

-0.014 +/- 0.083

-0.110 +/- 0.120

-O.OD1I +/- 0.015

-0.0)6 +/- 0.024

-0.016 +/- 0.032 0.0:28 +/- 0.033 K-40 8.560 +/- 0.860 8.350 +/- 0.590 4.120 +/- 0.640 4.610 0.830 4.430 +/- 0.770 4.31)0 0 0.830 5.990 +/- 0.640 3.790 +/- 0.960 5.620 + 0.630 8.0:'0 0.900 13.070 +/- 0.710 5.8'iO +/- 0.870 2.760 +/- 0.440 3.5'0 +/- 0.780 3.690 +/- 0.670 7.820 i 0.880 Sb-125 La-140 Mn-54 Nb-95 Ru-103 Ru-106 04/13/C'5 -0.030 +/- 0.067 0.012 +/- 0.027 04/27/15 0.015 +/- 0.041 0.001 +/- 0.019 05/111/05 0.004 +/- 0.020

-0.006 +/- 0.022 05/23/05 -0.008 +/- 0.052

-0.020 +/- 0.025 06/08/CI5 0.040 +/- 0.100

-0.026 +/- 0.028 06/22/05 0.018 +/- 0.043 0.002 +/- 0.022 07/06/C5 0.006 +/- 0.030 0.006 +/- 0.019 07/20/C5 0.051 +/- 0.076

-0.021 +/- 0.026 08/03/C5 0.026 +/- 0.033

-0.004 +/- 0.017 08/17/C5 0.050 +/- 0.140

-0.007 +/- 0.028 09/07/C5 0.008 +/- 0;042

-0.010 +/- 0.021 09/29/C5 -0.029 +/- 0.090 0.006 +/- 0.026 10/12/05 -0.004 + 0.022

-0.004 +/- 0.015 10/26/05 0.008 +/- 0.043

-0.020 +/- 0.026 11/16/05 -0.006+/- 0.049 0.011 +/- 0.022 12/14/05 -0.040 +/- 0.110

-0.014 +/- 0.028 0.025 +/- 0.032 0.003 +/- 0.025

-0.060 +/- 0.220

-0.009 +/- 0.030 0.009 +/- 0.023

-0.060 +/- 0.190

-0.017 +/- 0.021 0.003 +/- 0.020 0.050 I 0.170

-0.017 +/- 0.031 0.009 +/- 0.022 0.060 +/- 0.230

-0.020 +/- 0.043

-0.008 +/- 0.039 0.090 +/- 0.260

-0.009 +/- 0.023

-0.040 +/- 0.027 0.030 +/- 0.210

-0.024 +/- 0.023

-0.001 +/- 0.019 0.060 +/- 0.150

-0.003 +/- 0.041

-0.009 +/- 0.026

-0.020 +/- 0.250

-0.020+/- 0.022

-0.017 +/- 0.018 0.120 +/- 0.170

-0.028 +/- 0.047

-0.001 +/- 0.042 0.060 +/- 0.270 0.013 +/- 0.026 0.002 +/- 0.023

-0.050 +/- 0.200 0.012 +/- 0.036 0.010 +/- 0.033

-0.290 +/- 0.240 0.002 +/- 0.016 0.006 +/- 0.013 0.050 +/- 0.110

-0.010 +/- 0.026

-0.007 +/- 0.019

-0.140 +/- 0.160

-0.016 +/- 0.028

-0.010 +/- 0.022

-0.010 +/- 0.170

-0.002 +/- 0.043

-0.031 +/- 0.033

-0.070 +/- 0.250 0.0412 +/- 0.061 0.033 +/- 0.048 0.003 +/- 0.046

-0.026 +/- 0.057 o.o61 +/- 0.060

-0.004 +/- 0.059

-0.01.0 +/- 0.047 0.0(16 +/- 0.057

-0.027 +/- 0.039 0.048 +/- 0.067

-0.0()8 0.050

-0.0:. 1 +/- 0.063

-0.0.1 + 0.032

-0.0:.6 +/- 0.045

-0.021 +/- 0.047 0.052 +/- 0.063 Th-228 Zn-65 Zr-95 04/13/05 0.020 +/- 0.120

-0.007 +/- 0.065 04/27/05 0.041 +/- 0.094 0.000 + 0.046 05/11/05 0.033 +/- 0.074

-0.059 +/- 0.055 05/23/05 0.030 +/- 0.110

-0.019 +/- 0.055 06/08/05 0.100 +/- 0.100 0.040 +/- 0.070 06/22/05 -0.040+/- 0.100

-0.093 +/- 0.065 07/06/05 0.120 +/- 0.091

-0.017 +/- 0.040 07/20/05 0.090 +/- 0.100 0.034 +/- 0.073 08/03/05 0.035 +/- 0.077

-0.016 +/- 0.049 08/17/05 0.030 +/- 0.120

-0.034 +/- 0.076 09/07/05 0.090 +/- 0.077

-0.004 +/- 0.072 09/29/05 0.010 + 0.100 0.068 +/- 0.063 0.009 +/- 0.048

-0.009 +/- 0.038

-0.005 +/- 0.036 0.012 +/- 0.045

-0.028 +/- 0.055

-0.004 +/- 0.035

-0.007 +/- 0.034

-0.020 +/- 0.068 0.022 +/- 0.035

-0.034 +/- 0.064 0.005 +/- 0.039 0.053 +/- 0.049

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Opeiating Report 2005 Table 9, Pasture Grass (pCi/g wet)

Page 3 of 4 Location Collection Isotope Date 22 Th-228 Zn-65 Zr-95 10/12/05 0.032 + 0.051 10/26/05 0.026 + 0.078 11/16/05 0.043 +/- 0.086 12/14/05 -0.040+/- 0.100 Ba-140

-0.021 +/- 0.028

-0.004 +/- 0.021

-0.035 +/- 0.052 0.020 +/- 0.039

-0.050 +/- 0.110 0.015 +/- 0.033

-0.067 +/- 0.069 0.011 + 0.058 24-C Be-7 Ce-141 Ce-144 Co-58 Co-60 01/26/05 0.011 +/-0.038 F 02/23/05 0.053 +/- 0.067 F 03/16/05 -0.002 +/- 0.032 F 04/13/05 0.012 4 0.062 F 04/27/05 0.021 +/- 0.030 05/11/05 -0.020 + 0.025 06/22/05 0.005 +/- 0.048 07/20/05 0.056 +/- 0.049 08/03/05 0.010 +/- 0.050 08/17/05 0.040 +/- 0.120 09/07/05 -0.025 +/- 0.044 09/28/05 -0.130 +/- 0.100 10/12/05 -0.011 +/- 0.025 10/26/05 -0.003 +/- 0.033 11/16/05 -0.017 +/- 0.038 12/14/05 -0.048 +/- 0.077 F Cr-51 01/26/35 0.130+/- 0.160 02/23/35 0.010 +/- 0.340 03/16/05 -0.010 +/- 0.180 04/13/35 -0.130 + 0,320 04/27/35 0.000 +/- 0.160 05/11/0)5 0.000 +/- 0.110 06/22/0)5 0.020 +/- 0.240 07/20/35 -0.010 +/- 0.220 08/03/0)5 0.070 +/- 0;150 08/17/0)5 0.340 +/- 0.380 09/07/')5 -0.090 +/- 0.180 09/28/35 -0.030 +/- 0.220 10/12/4)5 -0.050 +/- 0.081 10/26/0)5 0.000 +/- 0.160 11/16/4)5 0.100 +/- 0.150 12/14/4)5 -0.050 +/- 0.250 La-140 0.800 +/- 0.240 1.050 +/- 0.400 0.800 +/- 0.260 0.110 + 0.260 0.980 +/- 0.390 0.290 +/- 0.200 0.100 +/- 0.220 1.000 0.310 1.130 0.270 1.080 0.510 0.930 +/- 0.330 0.630 +/- 0.350 1.080 0.200 3.130 +/- 0.440 4.410 +/- 0.470 1.380 +/- 0.320 Cs-134 0.028 +/- 0.027 0.010 +/- 0.034 0.013 + 0.023 0.033 +/- 0.033

-0.011 +/- 0.023 0.002 I 0.021 0.015 +/- 0.028

-0.004 4 0.023

-0.004 +/- 0.020 0.027 +/- 0.033 0.000 +/- 0.031 0.004 +/- 0.028

-0.006 +/- 0.015 0.000 +/- 0.014

-0.006 +/- 0.019 0.007 +/- 0.023 Mn-54

-0.014 +/- 0.024 0.024 +/- 0.075 0.003 +/- 0.024 0.007 +/- 0.029 0.034 +/- 0.055

-0.090 0.150 0.018 +/- 0.033

-0.017 +/- 0.034 0.014 +/- 0.036

-0.100 +/- 0.100

-0.012 +/- 0.025 O.OD4 +/- 0.029

-0.036 +/- 0.049

-0.080 +/- 0.150 0.012 +/- 0.035

-0.032 +/- 0.039 0.007 +/- 0.026

-0.015 +/- 0.072

-0.012 +/- 0.030

-0.021 +/- 0.040

-0.006 0.031 0.011 0.054

-0.019 0.020 0.011 +/- 0.025 0.027 + 0.032 0.080 +/- 0.110 0.000 +/- 0.026 O.OD2 +/- 0.028

-0.030 + 0.030

-0.030 +/- 0.094 0.004 +/- 0.021

-0.018 + 0.025 0.001 +/- 0.024 0.005 0.066

-0.010 +/- 0.021 0.036+/- 0.034

-0.008 +/- 0.055 0.060 +/- 0.140

-0.022 +/- 0.037

-0.039 +/- 0.045

-0.024 + 0.026 0.019 +/- 0.077 0.004 + 0.026

-0.020 +/- 0.027 0.021 +/- 0.030

-0.004 +/- 0.091

-0.015 +/- 0.030

-0.004 +/- 0.029

-0.001 +/- 0.011

-0.008 +/- 0.033 0.004 +/- 0.011

-0.003 +/- 0.017 0.005 + 0.021

-0.078 +/- 0.080 0.015 +/- 0.014

-0.009 +/- 0.017 0.002 +/- 0.024 0.085 +/- 0.076

-0.006+/- 0.021

-0.012 0.024 0.031 + 0.033 0.056 +/- 0.091 0.000 +/- 0.022 0.000 +/- 0.031 Cs-137 Fe-59 1-131 K-40 0.090 +/- 0.032

-0.037 +/- 0.075

-0.006 +/- 0.032 1O.CX 00 0.850 0.056 +/- 0.039

-0.003 +/- 0.094

-0.006 + 0.099 9.6:30 +/- 0.960 0.089 +/- 0.036

-0.007 +/- 0.063

-0.013 +/- 0.034 8.330 +/- 0.750 0.022 +/- 0.040 0.029 +/- 0.093 0.013 +/- 0.099 6.920 +/- 0.830 0.000+/- 0.019

-0.009 +/- 0.094 0.002 +/- 0.009 6.94)00 1.200 0.008 +/- 0.022

-0.017 +/- 0.070

-0.002 + 0.001

6.0100 +/- 0.920 0.014 +/- 0.025

-0.001 +/- 0.072 0.008 +/- 0.020 4.290 +/- 0.700

-0.001 +/- 0.019

-0.009 +/- 0.076

-0.001 +/- 0.013 4.890 + 0.760 0.003 +/- 0.022

-0.029 +/- 0.084

-0.003 +/- 0.001 6.610 :E0.860

-0.007 +/- 0.030 0.040 +/- 0.110 0.003 +/- 0.011 9.900 +/- 1.400 0.000 +/- 0.024 0.021 +/- 0.095 0.027 +/- 0.035 5.220 + 0.940 0.005 +/- 0.027

-0.016 + 0.089 0.003 t 0.010 5.500 + 1.000 0.007 +/- 0.011 0.010 +/- 0.030 0.002 +/- 0.006 3.870 + 0.550

-0.009 +/- 0.012

-0.012 +/- 0.028

-0.003 +/- 0.001 2.9 lO + 0.570 0.017 +/- 0.016 0.022 +/- 0.044 0.001 +/- 0.011 4.5:0 i 0.710 0.024 +/- 0.025 0.085 +/- 0.059 0.070 +/- 0.110 5.830 +/- 0.680 Nb-95 Ru-103 Ru-106 Sb-125 01/26/05 0.013 +/- 0.04 02/23/35 0.061 +/- 0.077 03/16/4)5 -0.002 +/- 0.037 04/13/0)5 0.014+/- 0.072 04/27/0)5 0.025 +/- 0.035 05/11/0)5 -0.023 +/- 0.028 06/22/4)5 0.006 + 0.056 07/20/0)5 0.065 +/- 0.056 08/03/A)S 0.012 +/- 0.057 08/17/05 0.040 +/- 0.140 0.011 +/- 0.023

-0.006 +/- 0.032

-0.010 + 0.025

-0,005 +/- 0.034 0.001 +/- 0.034 0.013 +/- 0.022 0.002 +/- 0.022

-0.005 +/- 0.020

-0.027 +/- 0.025

-0.015 +/- 0.035 0.008 +/- 0.027

-0.001 +/- 0.020

-0.020 +/- 0.190 0.016 + 0.045

-0.026 +/- 0.040 0.100 +/- 0.320

-0.004 +/- 0.028

-0.009 +/- 0.024

-0.030 +/- 0.250

-0.011 + 0.042

-0.016 + 0.039

-0.190 +/- 0.320 0.013 +/- 0.026

-0.008 +/- 0.024

-0.050 +/- 0.190

-0.005 +/- 0.024

-0.014 +/- 0.015 0.080 + 0.160

-0.016 +/- 0.033 0.018 + 0.026

-0.130 +/- 0.210

-0.014 +/- 0.029

-0.009 +/- 0.026

-0.170 +/- 0.180 0.005 +/- 0.027

-0.004 +/- 0.018 0.060 i 0.170

-0.017 +/- 0.056

-0.013 +/- 0.042 0.270 + 0.300 0.024 +/- 0.060 0.0414 +/- 0.074

-0.0.34 +/- 0.057 0.0:15 +/- 0.074 0.006 +/- 0.052 0.0:33 +/- 0.041 0.023 +/- 0.054

-0.014 +/- 0.049 0.014 +/- 0.046 0.029 + 0.082

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Ope ating Report 2005 Table 9, Pasture Grass (pCi/g wet)

Page 4 of 4 Location Collecion Date Isotope 24-C La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 09/07/05 -0.028 +/- 0.050 09/28/05 -0.150 +/- 0.120 10/12/05 -0.013 +/- 0.029 10/26/05 -0.003 +/- 0.038 11/16/05 -0.019 +/- 0.044 12/14/05 -0.055 + 0.089 Th-228 0.014 +/- 0.024

-0.015 +/- 0.025 0.001 +/- 0.012 0.000 +/- 0.014 0.013 +/- 0.020 0.004 +/- 0.021 Zn-65

-0.010 + 0.034

-0.007 +/- 0.038 0.000 +/- 0.011

-0.006 + 0.021

-0.011 +/- 0.024

-0.022 + 0.033 0.002 +/- 0.023 0.013 + 0.027

-0.005 4 0.010 0.003 +/- 0.017

-0.006 L 0.018

-0.005 i 0.025 0.000 +/- 0.180

-0.120 +/- 0.200

-0.009 +/- 0.080

-0.070 +/- 0.140

-0.140 +/- 0.170

-0.050 +/- 0.210 0.000 +/- 0.049 0.037 +/- 0.058

-0.C015 +/- 0.029 0.020 +/- 0.036

-0.C23 + 0.040 0.007 +/- 0.050 Zr-95 01/26/05 02/23/05 03/16/05 04/13/05 04/27/05 05/11/05 06/22/05 07/20/05 08/03/05 08/17/05 09/07/05 09/28/05 10/12/05 10/26/05 11/16/05 12/14/05 0.080 +/- 0.098

-0.010 0.160 0.040+/- 0.100 0.030 +/- 0.150 0.020 0.100 0.008 +/- 0.072 0.056 +/- 0.096 0.009 0.066 0.016 +/- 0.087 0.050 4 0.130 0.019 +/- 0.098 0.040 i 0.110 0.026 +/- 0.034 0.010 +/- 0.051 0.054 +/- 0.095 0.100 +/- 0.110 0.037 +/- 0.052

-0.089 4 0.082

-0.032 +/- 0.060

-0.035 i 0.081 0.027 +/- 0.053

-0.016 +/- 0.049

-0.015 +/- 0.057 0.012 +/- 0.049

-0.029 +/- 0.046

-0.017 +/- 0.097 0.032 +/- 0.081 0.028 +/- 0.065 0.003 A 0.023 0.005 +/- 0.037 0.013 +/- 0.053 0.020 + 0.076

-0.015 + 0.042 0.045 +/- 0.063 0.005 +/- 0.041 0.024 +/- 0.061

-0.026 + 0.045 0.001 +/- 0.038

-0.025

- 0.043

-0.010 +/- 0.039 0.037 +/- 0.039

-0.019 +/- 0.061

-0.029 +/- 0.036 0.026 +/- 0.047 0.009 +/- 0.018

-0.003 +/- 0.029 0.019 +/- 0.032 0.030 +/- 0.043

Dominion Nuclear Connecticut. Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 10, Well Water (pCi/L)

Page I of 3 Location Collecion Date Isotope 70-C Ba-140 03/17/05 3.3 +/- 4.1 Cs-137 Be-7 3.0I 13.0 Fe-59 Co-58

-0.4+ 1.6 H-3 Co-60 0.2+/- 1.5 1-131 Cr-51 19.0+ 17.0 K-40 Cs-134 0.7+/- 1.6 La-140 03/17/05

-0.2+/- 1.4 Mn-54 03/17/05

-0.7+/- 1.4 Zn-65 2.9 +/- 4.2 Nb-95 0.4 +/- 2.6 140.0 + 640.0 Ru-103

-1.0 + 2.0

-0.8 +/- 6.5 Ru-106 0.0+/- 14.0 7.0 +/- 25.0 Sb-125 1.1 + 3.6 3.9 +/- 4.7 Th-228 1.5 + 6.6 Zr-95 03/17/)5

-4.3 +/- 3.3 1.7 +/- 2.8 71 Ba-140 03/15/)5 06/16/1)5 09/151)5 12/19/1)5 1.8 +/- 4.9

-2.8 +/- 6.1 3.3 +/- 4.9 1.2 + 3.4 Be-7

-8.0 +/- 29.0

-5.0 +/- 22.0

-3.0 +/- 22.0

-16.0+ 16.0 Fe-59 Co-58

-1.5 + 3.1 0.3 i 2.4 2.1 + 3.0

-0.7 + 1.8 H-3 Co-60 3.7 +/- 2.6 0.7+/- 2.4 1.2+/-2.8

-0.4 +/- 1.8 1-131 Cr-51 11.0+/- 31.0

-17.0 +/- 25.0

-10.0 +/- 26.0 0.0 +/- 19.0 K40 Cs-134

-1.1 3.0

-).2 +/- 2.7

.1 +/-2.7

-1.6+2.0 La-140 Cs-137 03/15/0)5 06/16/1)5 09/15/0)5 12/19/4)5

-2.2 4 4.5

-0.8 + 2.6

-0.5 +/- 2.8 1.3 + 1.6 Mn-54

-2.6 +/- 7.5

-4.0 +/- 8.2 3.2 + 6.5 1.7 +/- 3.9 Nb-95

-2.7+/- 5.4

-2.2b3.1

-3.1 +/- 3.4 1.9 +/- 2.1 03/15/0)5 06/16/05 09/15/05 12/19/05

-2.0 +/- 2.8

-0.6 : 2.5 0.6 +/- 2.8

-0.1 +/- 1.7 03/15/05 06/16/05 09/15/)5 12/19/05 Zn-65 5.0+/- 15.0 5.0+/- 12.0

-1.1 + 6.2

-4.7 +/- 4.0 Zr-95 1.8+/-4.6

-1.0+ 4.4

-2.7+/- 4.9

-1.7 +/- 3.3 480.0 +/- 650.0 280.0 +/- 360.0 390.0 +/- 940.0 550.0 + 990.0 Ru-103 0.7 +/- 3.2

-0.7 + 2.6

-0.8 +/- 3.5

-0.2 +/- 2.2 Co-58 0.2 +/- 1.7 2.2 +/- 3.1 1.8 +/- 3.0 0.4 +/- 1.7 H-3

-2.9 +/- 5.6

-5.4 +/- 6.9 2.9 +/- 7.5 2.5+/- 5.5 Ru-106 4.0 +/- 24.0 4.0+24.0

-19.0 +/- 25.0 4.0 +/- 18.0 Co-60 0.9 +/- 1.7

-3.9+/- 3.7 0.2 +/- 2.7

-0.8 +/- 1.5 1-131

-27.0 +/- 30.0

-1.0 +/- 38.0

-22.0 +/- 45.0

-4.0 +/- 28.0 Sb-125 1.5 +/- 8.2

-5.1 + 6.3 0.9 +/- 6.8

-2.0 +/- 4.2 Cr-51

-3.0+/- 18.0 9.0 +/- 27.0 14.0 +/- 30.0

-9.0 + 17.0 K-40

.1 +/- 5.6

-3.2 +/- 7.0

.8 +/- 5.7

].4+/-3.9 Th-228

-9.0+/- 10.0 3.0+/- 10.0

-2.0+/- 11.0 6.3 +/- 7.6 72 Ba-140 03/21/0)5 06/16/)5 09/15/05 12/19/05

-3.1 + 3.8 2.7 + 7.2

-1.7 +/- 5.6

-0.3 + 3.5 Be-7

-2.0+/- 15.0 15.0 +/- 23.0 7.0 +/- 27.0 0.0 + 14.0 Fe-59 Cs-134

-:I.o+ 1.8

-0.7 +/- 3.6

-().2 + 2.9 (0.7 + 1.8 La-140 Cs-137 03/21/(05 06/116/15 09/115/15 12/19/C'5

-1.2 +/- 1.7 0.4 +/- 3.2 0.4 +/- 3.2 0.7 +/- 1.6

-0.6 +/- 5.3

-3.0+/- 11.0 3.2 +/- 7.6 1.3 +/- 3.8 90.0 + 630.0 80.0 + 360.0

-230.0 +/- 920.0

-690.0 + 940.0

-1.0 + 5.4

-0.1 +/- 7.4

-3.0 +/- 7.4 1.9 +/- 4.9 2.0 +/- 28.0 9.0 +/- 49.0 26.0 +/- 42.0

-4.0 +/- 27.0

.3.6 4.4 3.1 +/- 8.3

-2.0 +/- 6.4

-(0.4 +/- 4.0

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental OpErating Report 2005 Table 10, Well Water (pCi/L)

Page 2 of 3 Location Collection Date Isotope 72 03/21/05 06/16/05 09/15/05 12/19/05 03/21/05 06/16/05 09/15/05 12/19/05 Mn-54 0.3 +1.5

-3.6 +/- 3.3

-1.1 + 2.9

-0.3 + 1.5 Zn-65

-3.4 +/- 3.7

-3.2 +/- 7.2 6.0+/- 13.0 8.7 +/- 6.7 Nb-95 0.6+/- 1.9 1.6+/- 4.2 3.2+/-3.6 1.2+/-2.7 Zr-95

-0.9 +/- 3.0 0.5 +/- 6.0 1.8+/-5.2 0.2 +/- 2.9 Ru-103

-2.1 +/- 1.9 0.0 +/- 3.4

-2.1 +/- 2.9

-1.6 4 2.1 Ru-106

-6.0 + 16.0

-3.0 +/- 26.0

-10.0 + 27.0

-4.0+/- 15.0 Sb-125 0.3 +/- 4.4

-5.0 +/- 7.7 5.9 + 7.4 1.9 4 4.0 Th-228 2.5 +/- 5.9

-6.0 +/- 12.0

-10.0+/- 11.0

-2.4 +/- 7.4 76-X 77-X Ba-140 02/17/05

-1.0 +/- 5.8 09/22/05 0.0 + 5.9 Cs-137 02/17/35 0.1 + 2.1 09/22/35 1.2 +/- 3.5 Mn-54 02/17/0)5 0.0 +/- 2.3 09/22/')5

-2.7 +/- 3.2 Zn-65 02/17/0)5

-9.9 +/- 5.4 09/22/4)5

-8.0 +/- 9.3 Ba-140 02/17/05

-5.1 +/- 5;9 09/22/05 K

Be-7 3.0+/- 24.0

-2.0 +/- 29.0 Fe-59

-1.1 +/- 7.2

-0.6 + 7.9 Nb-95

-0.9 + 2.7 0.0 +/- 4.2 Zr-95 3.2 +/- 3.8

-0.4 + 6.1 Be-7 3.0 +/- 21.0 Co-58

-1.4+/- 2.4

-1.9 +/- 3.5 H-3

-130.0 +/- 640.0

-230.0 +/- 920.0 Ru-103

-2.5 +/- 2.9

-0.4 +/- 3.9 Co-58

-0.5 +/- 2.4 Co-60 0.9 +/- 2.7

-0.8 + 3.3 1-131 2.0+ 6.7 1.5 +/- 8.3 Ru-106 6.0+ 21.0 12.0 +/- 29.0 Co-60

-0.8 +/- 2.3 Cr-51 10.0 + 27.0 36.0 + 34.0 K-40 11.0+/- 28.0

-7.0 + 52.0 Sb-125 4.8 +/- 6.7

-4.1 + 8.7 Cr-51 7.0 +/- 22.0 Cs-134 0.7 +/- 2.4 0.5 +/- 3.6 La-140

-1.2 +/- 6.7 0.0+/-6.7 Th-228 4).5+/-9.3

-1.0 +/- 14.0 Cs-134

- 0).l 2.5 02/17/05 09/22/05 02/17/05 09/22/)5 02/17/05 09/22/05 Cs-137

-1.7 + 2.2 Mn-54

-1.4 + 2.4 Zn-65

-6.5 + 5.9 Fe-59

-0.2 +/- 7.1 Nb-95 0.9 t 3.4 H-3

-80.0 +/- 640.0 Ru-103

-2.8 +/- 2.7 I-131

-7.1 +/- 5.5 Ru-106 13.0+/- 21.0 K-40

-19.0 +/- 35.0 Sb-125 2.5 +/- 6.6 La-140

-.5.9 +/- 6.8 Th-228

-3.5 +/- 8.2 Zr-95 0.4 +/- 4.6

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 10, Well Water (pCiUL)

Page 3 of 3 Location Collect on Date Isotope 78-X Ba-140 02/17/05 4.8 + 3.8 09/22/)5

-0.1 4 6.6 Cs-137 02/17/05

-0.3 i 1.9 09/22/(15

-2.1 +/- 3.6 Mn-54 02/17/C'5

-1.3 +/- 1.9 09/22/C5 1.4 +/- 3.4 Zn-65 02/17/C05

-1.5 +/- 4.4 09/22/C5

-5.8 +/- 7.8 Be-7

-1.0:1: 20.0

-17.0 + 30.0 Fe-59

-1.9 + 5.0 5.0+/- 10.0 Nb-95 0.7+2.4 1.9 + 3.9 Zr-95 Co-58 0.2 + 2.0

-3.5 +/- 3.0 H-3

-80.0 + 640.0

-50.0 + 940.0 Ru-103

-0.4 + 2.6

-1.1 + 3.6 Co-60 1.2+/-2.1

-0.8+/-3.6 1-131 2.1 +/- 6.6 8.1 +/- 9.0 Ru-106 0.0+/- 18.0 6.0+/-31.0 Cr-51 2.0 +/- 21.0

-18.0 +/- 36.0 K-40

-1.0 +/- 25.0

-12.0 +/- 42.0 Sb-125 5.4 +/- 5.3 3.8 +/- 9.5 Cs-134

-0.6 +/- 2.1 1.6 +/- 3.1 La-140 5.5 +/- 4.3

-0.1 +/- 7.5 Th-228

-0.8 + 7.2 8.0+/- 16.0 0.3 + 3.9 1.7 + 6.7

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 12, Fruits & Vegetables (pCi/g wet)

Page I of 2 Location Collection Sample Type Isotope Date 25 Ba-140 Be-7 Ce-141 Ce-144 Co-58 07/06/05 RASPBERRIES 0.021 4 0.037 0.100 +/- 0.150 0.012 + 0.027

-0.020 0.110

-0).007 +/- 0.021 07/20/05 CABBAGE 0.000 0.014 0.069 +/- 0.072

-0.016 + 0.015 0.025 0.028

-0.003 +/- 0.006 09/14/05 APPLES

-0.012 4 0.015 0.024 +/- 0.046 0.000 +/- 0.013

-0.013 4 0.024

-0.002 + 0.005 09/14/C5 COLLARDS 0.003 4 0.011 0.028 +/- 0.026

-0.021 +/- 0.009

-0.007 0.013

-).001 +/- 0.003 Co-60 Cr-51 Cs-134 Cs-137 Fe-59 07/06/05 RASPBERRIES

-0.013 4 0.031

-0.050+ 0.180 0.017 +/- 0.027 0.004 +/- 0.021 0.009 +/- 0.057 07/20/05 CABBAGE 0.004 0.007 0.051 +/- 0.067 0.003 + 0.006 0.002 +/- 0.007

-0.004 +/- 0.021 09/14/05 APPLES 0.005 4 0.006

-0.028 + 0.062

-0.001 +/- 0.005 0.002 + 0.005 0.010 +/- 0.013 09/14/05 COLLARDS 0.003 +/- 0.003

-0.021 + 0.039 0.001 +/- 0.003 0.003 +/- 0.003

-0.003 +/- 0.008 1-131 K-40 La-140 Mn-54 Nb-95 07/06/05 RASPBERRIES 0.018 +/- 0.032 0.920 +/- 0.590 0.024 +/- 0.042 0.013 +/- 0.025

-0.003 +/- 0.023 07/20/05 CABBAGE

-0.015 +/- 0.026 2.810 +/- 0.190 0.000 +/- 0.017 0.001 +/- 0.006

-0.001 +/- 0.008 09/14/05 APPLES 0.026+/- 0.031 1.070+/- 0.120

-0.014 +/-0.018

-0.001 + 0.005 (0.004+ 0.007 09/14/05 COLLARDS

-0.004 + 0.031 2.367 + 0.078 0.003 I 0.013

-0.001 +/- 0.003

-0.005 + 0.008 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 07/06/05 RASPBERRIES 0.000 + 0.016

-0.010 +/- 0.230

-0.006 +0.052 0.081 + 0.087 0.043 +/- 0.051 07/20/05 CABBAGE

-0.001 +/- 0.007 0.015 + 0.055 0.001 + 0.014 0.032 + 0.030 (1.000+ 0.014 09/14/05 APPLES

-0.007 + 0.006

-0.022 + 0.048 0.008 0.012 0.008 + 0.024

-0.005 +/- 0.011 09/14/05 COLLARDS 0.001 + 0.006 0.012 +/- 0.024

-0.003 + 0.006 0.007 + 0.015 (0.009 + 0.010 Zr-95 07/06/05 RASPBERRIES 0.004 +/- 0.034 07/20/05 CABBAGE

-0.004 + 0.011 09/14/05 APPLES

-0.003 4 0.009 09/14/05 COLLARDS 0.000 +/- 0.006 26-C Ba-140 Be-7 Ce-141 Ce-144 Co-58 07/12/05 RASPBERRIES

-0.010 + 0.013 0.042 + 0.088

-0.002 + 0.013

-0.005 + 0.053 0'.000 + 0.010 07/27/05 COLLARDS

-0.005 + 0.012 0.024 + 0.059 0.005 + 0.009

-0.012+/- 0.033 C'.002 +/- 0.007 09/14/05 APPLES 0.002 +/- 0.015 0.025 +/- 0.046 0.001 + 0.009 0.009 +/- 0.025

('.000 +/- 0.005 09/14/05 CABBAGE 0.001 + 0.014 0.002 +/- 0.029

-0.009 +/- 0.009

-0.006 +/- 0.020

-0.003 + 0.003 Co-60 Cr-51 Cs-134 Cs-137 Ye-59 07/12/05 RASPBERRIES

-0.007 + 0.011

-0.097 4 0.084 0.004 + 0.010 0.004 + 0.012 (0.012 + 0.027 07/27/0.5 COLLARDS

-0.001 +/- 0.010 0.030 + 0.066 0.000 +/- 0.007

-0.001 4 0.007

('.012 +0.025 09/14/0.5 APPLES 0.001 + 0.005 0.016 +/- 0.062 0.002 + 0.005 0.000 +/- 0.005

-0.003 + 0.016 09/14/0.5 CABBAGE 0.000 + 0.003 0.033 +/- 0.043 0.004 + 0.003 0.001 +/- 0.003 C.006 + 0.008 I-131 K-40 La-140 Mn-54 Nb-95 07/12/03 RASPBERRIES

-0.006 +/- 0.013 1.630 4 0.270

-0.012 + 0.015

-0.001 + 0.010 C.001 + 0.010 07/27/0:3 COLLARDS 0.003 + 0.017 4.450 + 0.280

-0.005 i 0.014

-0.003 +/- 0.007 0.006 + 0.008 09/14/0:5 APPLES

-0.020 +/- 0.030 0.880 + 0.100 0.003 + 0.017 0.001 + 0.004

-0.007 +/- 0.007 09/14/0:

CABBAGE

-0.029 +/- 0.035 1.946 + 0.086 0.001 +/- 0.016

-0.004 + 0.003

-('.001 + 0.008 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 07/12/0:;

RASPBERRIES 0.000 +/- 0.009

-0.048 + 0.099 0.021 + 0.028 0.023 + 0.036

-C.017 + 0.025 07/27/03 COLLARDS 0.000 +/- 0.007

-0.007 +/- 0.069

-0.002 +/- 0.016 0.004 + 0.041 0.001 + 0.017 09/14/03 APPLES 0.000 +/- 0.006 0.014 + 0.045

-0.002 +/- 0.013

-0.010 + 0.024

-0.002 + 0.010 09/14/05 CABBAGE 0.000 + 0.004

-0.006 + 0.027 0.005 + 0.007 0.002 + 0.018

-0.002 + 0.009

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 12, Fruits & Vegetables (pCilg wet)

Page 2 of 2 Location Collection Date Sample Type Isotope 26-C 07/12/05 07/27/05 09/14/05 09/14/05 RASPBERRIES COLLARDS APPLES CABBAGE Zr-95

-0.016 +/- 0.019 0.006 +/- 0.013 0.000 1 0.009 0.002 +/- 0.006

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 13, Broadleaf Vegetation (pCi/g wet)

Page l of 2 Location Collection Isotope Date 01 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 04/28/05 G

05/23/05 0.000 +/- 0.035 06/20/05 0.012 +/- 0.024 07/20/05 0.020 +/- 0.043 08/17/05 -0.026 +/- 0.068 09/09/05 -0.009 +/- 0.024 10/19/05 0.016 + 0.044 Cr-51 05/23/05 -0.030+/- 0.130 06/20/05 0.120 +/- 0.180 07/20/05 -0.030 +/- 0.190 08/17/05 0.060 +/- 0.160 09/09/05 -0.020 +/- 0.190 10/19/05 -0.070 + 0.250 La-140 0.170 +/- 0.160 0.011 + 0.021 0.081 + 0.067

-0.015 + 0.024 0.009 + 0.028 0.100 +/- 0.170

-0.022 +/- 0.030

-0.009 +/- 0.095 0.005 +/- 0.025

-O.C'03 +/- 0.022 0.660 +/- 0.230

-0.027 +/- 0.027

-0.006 +/- 0.075 0.011 +/- 0.022

-0.C 12 + 0.020 0.490 +/- 0.170 0.007 +/- 0.024 0.037 +/- 0.043

-0.006 +/- 0.016 0.012 +/- 0.018 0.510 +/- 0.260

-0.029+/- 0.028

-0.057 +/- 0.089 0.003 +/- 0.022 0.010 + 0.020 3.610 +/- 0.540

-0.025 +/- 0.035 0.080 +/- 0.110

-0.019 +/- 0.026 0.018 +/- 0.029 Cs-134 Cs-137 Fe-59 1-131 K-40 0.011 +/- 0.020 0.000 +/- 0.021 0.044 +/- 0.073

-0.020 +/- 0.031 3.780 +/- 0.790

-0.011 +/- 0.025

-0.008 +/- 0.017 0.000+/- 0.073 0.021 +/- 0.045 5.230 +/- 0.900 0.000 +/- 0.019 0.002 +/- 0.017 0.021 +/- 0.046

-0.020 +/- 0.072 3.090 +/- 0.530 0.000 + 0.015 0.009 +/- 0.013 0.013 +/- 0.061 0.030 +/- 0.110 3.330 +/- 0.430

-0.015 +/- 0.024 0.016 +/- 0.021

-0.015 +/- 0.061

-0.036+/- 0.047 3.230 +/- 0.620 0.021 +/- 0.023

-0.015 +/- 0.022 0.026 +/- 0.055

-0.012 +/- 0.091 2.990 +/- 0.650 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 05/23/35 0.000 + 0.041 06/20/35 0.014 + 0.028 07/20/35 0.023 + 0.050 08/17/35 -0.030 +/- 0.078 09/09/35 -0.010 + 0.028 10/19/35 0.018 +/- 0.051 Th-228 05/23/)5 0.122 +/- 0.096 06/20/05 0.018 +/- 0.081 07/20/')5 -0.014 +/- 0.068 08/17/0)5 0.060 + 0.079 09/09/0)5 0.068 +/- 0.076 10/19/0)5 0.086 + 0.096 Ba-140

-0.003 4 0.019

-0.001 +/- 0.025 0.015 +/- 0.017

-0.130 +/- 0.150

-0.034 +/- 0.049 0.002 +/- 0.018

-0.019 +/- 0.022

-0.013 +/- 0.022 0.010+/- 0.230 0.005 + 0.053

-0.004 + 0.018

-0.008 +/- 0.025

-0.004 +/- 0.025 0.020 + 0.160 0.010 +/- 0.042 0.000 + 0.014

-0.011 +/- 0.024

-0.014 + 0.017

-0.040 + 0.110

-0.007 + 0.031 0.002 +/- 0.019 0.013 +/- 0.024 0.002 + 0.021

-0.160 +/- 0.200 0.016 +/- 0.047

-0.013 +/- 0.022

-0.021 +/- 0.031

-0.005 + 0.030

-0.070 +/- 0.210

-0.026 +/- 0.054 Zn-65 Zr-95

-0.019 +/- 0.048 0.008 +/- 0.038 0.040 +/- 0.066 0.004 +/- 0.045

-0.006 +/- 0.045

-0.012 + 0.039

-0.031 4 0.037 0.008 + 0.026 0.007 +/- 0.054 0.006 +/- 0.037 0.010 +/- 0.060 0.022 +/- 0.051 10 Be-7 Ce-141 Ce-144 Co-58 Co-60 05/23/)5 -0.007 + 0.041 06/20/05 0.000 + 0.000 07/20/05 0.035 +/- 0.057 08/17/05 0.140 + 0.150 09/09/05 0.022 +/- 0.043 10/19/05 -0.011 +/- 0.096 Cr-51 05/23/)5 -0.120 +/- 0.089 06/20/)5 -0.040 + 0.160 07/20/)5 -0.1004 0.150 08/17/)5 0.460 + 0.440 09/09/)5 0.120 + 0.170 10/19/)5 -0.050 0.300 0.130 +/- 0.160

-0.003 +/- 0.018 0.023 +/- 0.054

-0.013 + 0.021 0.038 +/- 0.016 0.080 + 0.180 0.006 + 0.026 0.006 +/- 0.075

-0.015 + 0.027 0.033 + 0.027 0.560 +/- 0.240

-0.009 + 0.023 0.005 +/- 0.057 0.004 +/- 0.020

-0.004 +/- 0.024 0.940 + 0.550

-0.006 + 0.065 0.070 +/- 0.120

-0.003 + 0.048 0.021 +/- 0.037 0.450 +/- 0.280

-0.021 +/- 0.028 0.020 +/- 0.074

-0.009 +/- 0.024 0.020 +/- 0.026 1.450 +/- 0.410

-0.010 +/- 0.040

-0.040 +/- 0.120 0.001 +/- 0.025

-0.034 +/- 0.038 Cs-134 Cs-137 Fe-59 1-131 K-40 0.015 +/- 0.020

-0.012 +/- 0.015

-0.026 +/- 0.071 0.014 + 0.034 4.120 + 0.730 0.021 +/- 0.032 0.037 +/- 0.027

-0.020 +/- 0.076

-0.009 +/- 0.056 4.4410 + 0.960 0.000 + 0.021 0.001 + 0.017

-0.015 + 0.062

-0.033 + 0.068 2.510 +/- 0.560 0.040 + 0.038 0.025 + 0.037

-0.100 + 0.160 0.050 +/- 0.290 3.40)0 + 1.100

-0.007 +/- 0.026

-0.004 +/- 0.022

-0.031 + 0.084 0.018 +/- 0.041 3.810 +/- 0.810

-0.008 +/- 0.024 0.020 +/- 0.027 0.000 + 0.063

-0.020 +/- 0.100 3.050 +/- 0.780

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Ope:mting Report Millstone Station 2005 Table 13, Broadleaf Vegetation (pCi/g wet)

Page 2 of 2 Location Collection Isotope Date 10 La-140 Mn-54 Nb-95 Rui-103 Ru-106 Sb-125 05/23/05 -0.008 +/- 0.047

-0.004 +/- 0.014

-0.013 +/- 0.020 0.008 + 0.016 0.010 +/- 0.120

-0.007 +/- 0.041 06/20/05 0.000 +/- 0.000

-0.009 +/- 0.020 0.037 +/- 0.026 0.019 +/- 0.022

-0.020 +/- 0.170

-0.022 +/- 0.042 07/20/05 0.040 +/- 0.066

-0.004 +/- 0.018

-0.010 +/- 0.026

-0.012 +/- 0.020

-0.060 +/- 0.140

-0.023 +/- 0.042 08/17/05 0.160 +/- 0.170

-0.010 +/- 0.036

-0.028 +/- 0.056 0.008 +/- 0.053

-0.030 + 0.280

-0.021 +/- 0.080 09/09/05 0.025 +/- 0.050

-0.015 0.025

-0.031 0.030 0.006+/- 0.019 0.020+/- 0.200 0.013 +/- 0.059 10/19/05 -0.010 +/- 0.110 0.003 +/- 0.025

-0.002 +/- 0.036 0.007 + 0.024 0.060 +/- 0.230 0.019 +/- 0.059 Th-228 Zn-65 Zr-95 05/23/05 -0.013 +/- 0.063 0.020 +/- 0.046

-0.031 + 0.027 06/20/05 0.025 +/- 0.091

-0.016 +/- 0.066

-0.019 +/- 0.048 07/20/05 0.104 +/- 0.086 0.019 +/- 0.045

-0.048 +/- 0.038 08/17/05 0.140 +/- 0.190

-0.064 +/- 0.095

-0.083 +/- 0.099 09/09/05 -0.041 +/- 0.094

-0.019 +/- 0.068 0.010 +/- 0.046 10/19/05 0.030 +/- 0.120 0.020 + 0.060

-0.044 +/- 0.044 17 Ba-140 Be-7 Ce-141 Ce-144 Co-58 Co-60 05/23/05 0.013 + 0.042 0.060 +/- 0.160 0.005 4 0.019

-0.021 +/- 0.048 0.001 +/- 0.021 0.0.30 +/- 0.026 06/20/05 0.000 4 0.038 0.210 +/- 0.200 0.005 + 0.022

-0.013 + 0.064

-0.003 +/- 0.024 0.0D4 +/- 0.024 07/20/35 -0.016 +/- 0.050 0.700 I 0.260

-0.012 +/- 0.023

-0.060 +/- 0.054

-0.013 +/- 0.022

-0.035 i 0.023 08/17/35 0.056 +/- 0.087 0.320 +/- 0.330 0.003 +/- 0.045 0.040 +/- 0.110

-0.005 4 0.029 0.0)6 +/- 0.026 09/09/35 0.000 +/- 0.042 0.570 +/- 0.370

-0.007 I 0.037

-0.030 + 0.130

-0.014 +/- 0.028

-0.034 +/- 0.030 10/19/35 0.022 + 0.060 3.090 +/- 0.530 0.031 +/- 0.043

-0.020 +/- 0.130 0.017 +/- 0.025 0.012 0.029 Cr-51 Cs-134 Cs-137 Fe-59 1-131 K-40 05/23/0)5 -0.080 +/- 0.140

-0.015 0.021 0.022 +/- 0.019 0.011 +/- 0.058 0.002 + 0.043 2.7.50 0.640 06/20/05 -0.190 +/- 0.150 0.005 +/- 0.025 0.000 + 0.023 0.010 +/- 0.062

-0.004 +/- 0.037 3.2150 +/- 0.850 07/20/4)5 0.060 + 0.160 0.021 +/- 0.018 0.005 +/- 0.016 0.049 +/- 0.071

-0.023 +/- 0.062 1.930 +/- 0.530 08/17/A)5 -0.220 + 0.310 0.014 0.028 0.004 +/- 0.021

-0.016+/- 0.077 0.050 +/- 0.190 4.360 4 0.740 09/09/1)5 0.260 + 0.250

-0.003 +/- 0.031 0.028 1 0.032 0.034 + 0.077

-0.011 + 0.065 3.530 4 0.760 10/19/0)5 0.080 +/- 0.320 0.009 +/- 0.032 0.057 + 0.039

-0.046 +/- 0.061

-0.050 +/- 0.120 3.1410 +/- 0.680 La-140 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 05/23/0)5 0.015 +/- 0.048 0.005 +/- 0.019 0.010 +/- 0.024 0.002 +/- 0.017

-0.070 +/- 0.130 0.007 +/- 0.047 06/20/05 0.000 +/- 0.044

-0.026 + 0.031 0.013 +/- 0.021

-0.005 +/- 0.015 0.000 + 0.140 0.023 +/- 0.050 07/20/1)5 -0.018 +/- 0.058

-0.009 + 0.018 0.017 +/- 0.024

-0.003 + 0.018 0.070 +/- 0.140 0.01.5 4 0.045 08/17/4)5 0.060 +/- 0.100 0.023 +/- 0.028

-0.034 +/- 0.039

-0.005 +/- 0.030 0.080 +/- 0.210

-0.004 + 0.056 09/09/1)5 0.000 +/- 0.048 0.020 +/- 0.026

-0.008 +/- 0.038 0.010 + 0.027

-0.120 +/- 0.280 0.013 +/- 0.063 10/19/05 0.0264 0.068 0.0194 0.026 0.017+/-0.039

-0.009+/- 0.028

-0.020+/- 0.220 0.02440.062 Th-228 Zn-65 Zr-95 05/23/)5 -0.018 +/- 0.072

-0.035 +/- 0.043

-0.002 +/- 0.033 06/20/)5 0.007 +/- 0.090 0.026 + 0.062 0.039 +/- 0.040 07/20/)5 0.008 + 0.073

-0.027 +/- 0.041 0.020 +/- 0.040 08/17/05 0.035 +/- 0.091

-0.100 + 0.069 0.016 +/- 0.051 09/09/)5 0.040 +/- 0.110

-0.040 +/- 0.081 0.025 +/- 0.051 10/19/05 0.130 +/- 0.100

-0.079 + 0.067 0.000 +/- 0.050

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 14, Sea Water (pCi/L)

Page I of 2 Location Collection Date Isotope 32 Ba-140 02/01/05 03/01'05 03/29/'05 04/26/'05 05/31i'05 06/28,05 07/26/05 08/30/'05 09/27,05 10/25/05 11/29i05 12/27/05 0.2+/-3.1

-1.6+/- 4.9

-4.4 +/- 5.5

-3.0 +/- 5.2 0.4+/-5.5

-0.9+/-4.1

-2.2 +/- 3.8 5.3+/-6.3

-1.2+/-5.3 0.2+/-5.0 0.0+/- 6.6 2.2 +/- 5.8 Be-7

-12.0+/- 18.0 9.0+21.0 3.0 +/- 23.0

-5.0 +/- 24.0 6.0 +/- 21.0

-7.0+/- 21.0

-14.0 +/- 18.0 12.0 +/- 34.0 7.0 +/- 26.0 20.0 +/- 29.0

-26.0 +/- 36.0 10.0 +/- 25.0 Fe-59 Co-58 0.6 +/- 2.4 0.4 +/- 2.5 1.2+/-2.8 0.7 +/- 2.7 0.1+/-2.6 0.0+/- 2.4 1.0 +/- 2.1

-3.4 +/- 3.9 2.2 +/- 2.7 0.5 +/- 3.9

-2.5 + 3.8 2.4 +/- 3.0 H-3 Co-60

-0.8 +/- 2.4 0.5 + 2.1 0.0 +/- 3.4 1.6 +/- 3.1 1.7 +/- 3.5 0.0 +/- 2.9 0.1+/- 2.5 0.4 +/- 4.2

-1.0 +/- 2.6 2.1 +/- 3.7 1.3 +/-4.5

-0.4 +/- 3.3 1-131 Cr-51

-15.0 + 24.0

-20.0 + 27.0

-7.0 +/- 22.0 19.0 +/- 23.0

-3.0 +/- 20.0

-1.0+/- 22.0

-14.0+/- 18.0 26.0 +/- 36.0

-18.0 +/- 30.0

-10.0 +/- 35.0

-22.0 +/- 37.0 4.0 +/- 27.0 K-40 Cs-134

-1.3 + 2.6 0.7 + 2.0

-. 5 + 2.7

-1.7 + 2.8 O.1 +/- 3.2 1.5 +/- 2.5 0.0+/-2.6

-2.4 + 4.0 1.0+/-2.8

-2.3 +/- 4.2

-0.3 +/- 3.6 3.1 +/-3.1 La-140 Cs-137 02/01/05 03/01/05 03/29i'05 04/26/05 05/31/'05 06/28/'05 07/26i'05 08/30,05 09/27,05 10/25/05 1 1/29/05 12/27)05

-1.5 +/- 2.6 0.7 +/- 2.3

-0.7 +/- 2.5 1.4 +/- 2.7

-3.2 +/- 2.4 0.5 +/- 2.3 1.7 +/- 2.0 1.3 +/- 3.8 1.8 +/- 2.9 0.2 +/- 4.1

-1.2+/-3.4

-2.1 +/- 2.9 Mn-54 0.0 +/- 5.8 1.9 +/- 6.5

-7.2 +/- 9.2 2.7 +/- 9.2 3.5 +/- 8.5 7.0 +/- 7.6

-1.4 +/- 7.2

-1.0 +/- 8.5 1.7 +/- 6.0 7.6 +/- 8.7 1.8 +/- 8.8 5.9 + 7.3 Nb-95 0.0 +/- 2.6 0.6 2.7 0.0+/- 2.9

-0.6+/- 3.1

-0.1 +/- 2.9 1.3 +/- 2.6

-2.4+/- 2.5

-1.8 +/- 4.8

-4.0+ 3.4 0.6+/- 4.0

-2.4 +/- 4.3

-1.0 + 3.4 870.0+/- 150.0 400.0 +/- 83.0 590.0 +/- 130.0 1350.0 140.0 3010.0 +/- 240.0 440.0 +/- 240.0 130.0+/- 190.0 2190.0 +/- 210.0 450.0 +/- 200.0 1630.0 +/- 240.0 340.0+/- 190.0 510.0 +/- 210.0 Ru-103 0.7 2.3

-1.6 +/- 2.5

-1.1 2.5 0.6 2.8

-0.2 2.6

-3.8 2.5

-0.9 2.2

-0.3 +/- 3.9 0.2 3.0

-2.4 3.4

-1.4 4.3

-1.0 +/- 3.2

-1.4+/- 4.9

-5.9+/-7.6

-3.1+/-4.7

-3.4 +/- 4.4 3.0 +/- 4.5 0.3 +/- 4.7

-1.6+/- 3.4

-2.5 +/- 7.9 3.8+/- 8.0 2.1+/- 7.7

-3.1+/- 7.8 2.5 +/- 6.6 Ru-106 12.0 +/- 25.0 1.0 4 21.0 18.0 23.0

-2.0 +/- 23.0

-17.0+/- 21.0

-9.0 +/- 23.0 12.0+/- 19.0

-2.0 +/- 35.0 9.0 +/- 28.0 21.0 +/- 34.0 22.0 +/- 34.0 11.0 +/- 23.0 265.0 +/- 63.0 274.0 +/- 59.0 233.0 +/- 73.0 151.0+/- 57.0 302.0 +/- 64.0 285.0 +/- 56.0 246.0+/- 51.0 290.0 +/- 85.0 298.0+/- 66.0 296.0 +/- 82.0 318.0 +/- 84.0 312.0+/- 82.0 Sb-125 2.6 6.0 4.8 5.8

-4.0 7.0

-3.5 7.2 2.6 6.6 0.6 6.1

-0.2 5.6 0.7 9.2

-1.5 7.8

-6.0 9.7

-3.0+/- 10.0 2.1 +/- 7.8 0.2+/-3.5

-1.8+/-5.6

-5.1 6.3

-3.4 6.0 0.4+/-6.3

-1.0 +/-4.8

-2.5 +/-4.4 6.1 7.3

-1.4 6.1 0.2+/-5.7 0.0 +/-7.6 12.5 6.7 Thi-228

-2.7 8.1

-6.6 9.1 2.5 9.6

-5.5 9.6 3.0+/- 11.0

.3.8 +/--9.3

.3.8 8.1 E.0 15.0 1.0+/- 11.0 1.5.0 14.0 11.0 15.0 3.0+/- 12.0 02/01/05 03/01/05 03/29/05 04/26/05 05/31/05 06/28/05 07/26/05 08/30/05 09/27/05 10/25/05 11/29/05 12/27/05

-1.1 +/-2.2

-1.5 I 1.9

-1.1+/-2.7 1.0 +/- 2.2 0.6 +/- 2.7

-0.6 +/- 2.5

-0.8 +/- 2.3

-1.3 +/- 3.7 0.6 +/- 2.8

-0.3 +/- 3.8 0.3 +/- 3.8

-1.3 +/- 3.3 Zn-65 02/01/05 03/01/05 03/29/05 04/26/05 05/31/05 06/28/05 07/26/05 08/30/05 09/27/05 10/25/05 11/29/05 12/27/05

-0.3 +/- 5.0

-2.6 +/- 5.1 5.7+/- 6.1 5.1+/- 6.0

-0.7 +/- 6.2 1.1 +/- 5.5 0.8+/- 5.4 5.0+/- 14.0 0.8 +/- 5.8

-1.7 +/- 8.7

-0.7 +/- 8.2

-2.1+/-6.5 Zr-95 0.0 4 3.8

-2.5 +/- 4.1

-1.5 +/- 5.2 0.4 +/- 5.3

-2.0 +/- 5.3 1.6 +/-4.1 1.4 i 4.0

-1.4i 7.0

-3.2 +/- 5.4 0.9 +/- 6.7 1.0 +/- 6.5

-3.1i5.1

Dominion Nuclear Connecticut. Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 14, Sea Water (pCi/L)

Page 2 of 2 Location Collection Isotope Date 37-C 02/15/05 05/24/05 08/23/05 11/08/05 Ba-140

-4.0 +/- 5.2

-3.2 +/- 6.2 3.1 +/-4.1 2.0 +/- 5.9 Be-7 8.0 +/- 22.0

-17.0 +/- 27.0 10.0+/- 13.0 11.0 +/- 32.0 Co-58 0.1 +/- 2.5 0.2+/-2.7 1.4 +/- 1.5

-0.9 +/- 3.8 Co-60 1.4 +/- 2.4

-0.9 + 3.6 2.5 + 1.8

-3.8 +/- 4.5 Cr-51 6.0 + 25.0 15.0 + 30.0

-9.0+/- 17.0 8.0 + 29.0 Cs-134

-1.7 +/- 2.8

-1.8+/-3.4

-0.8 +/- 1.7 1.7+/-4.2 Cs-137 02/15/05 05/24/05 08/23/05 11/08/05

-0.4 +/- 2.4 0.8 +/- 3.4 0.4+/- 1.6 2.2 +/- 3.5 Fe-59 5.8 +/- 8.0 0.0 +/- 9.5 2.9 +/- 5.1

-0.6 +/- 8.3 Nb-95

-1.6 +/- 2.6 0.5 +/- 3.7

-0.5 +/- 1.9 2.8 +/- 4.5 H-3

-190.0 + 630.0

-30.0+/- 610.0

-630.0 +/- 720.0

-70.0 + 770.0 Ru-103 0.2 +/- 3.1

-0.8 +/- 3.5

-1.9+/- 1.8

-1.6 + 3.9 1-131

-4.1 + 6.6 4.6 + 6.5

-2.7 + 5.4 2.6 + 6.2 Ru-106 1.0 +/- 22.0

-18.0 +/- 30.0 8.0 + 15.0 6.0 +/- 33.0 K-40 225.0 + 60.0 242.0 + 70.0 288.0 + 39.0 267.0 + 99.0 Sb-125

-2.7 +/- 6.5 3.1+/- 7.4 0.0+ 3.9 9.1 + 9.2 La-140

-4.6 +/- 6.0 3.7 +/- 7.1 J.6 +/- 4.7 2.3 +/- 6.8 Th-228

-7.0+/- 10.0 5.0+/- 12.0

-2.8 +/- 8.4 6.0+/- 16.0 Mn-54 02/15/05 05/24/05 08/23/05 11/08/05

-0.6 +/- 2.5

-1.6 +/- 3.4 1.5 +/- 1.7 0.3 +/- 3.9 Zn-65 02/15/05 05/24/05 08/23/05 11/08/05

-6.7 +/- 6.2 2.0+/- 7.2

-1.4 +/- 3.4

-3.3 + 9.0 Zr-95 2.1 +/- 4.7

-3.3 +/- 5.5 0.4 +/- 2.9

-0.2 +/- 7.4

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 15, Bottom Sediment (pCi/g dry)

Page I of 3 Location Collection Isotope Date 29 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 04/19/)5 -0.041 +/- 0.043 0.220 +/- 0.310

-0.009 +/- 0.031 0.020 +/- 0.044

-0.280 +/- 0.340

-0.008 +/- 0.032 10/061)5 0.002 +/- 0.023

-0.010 +/- 0.170

-0.003 +/- 0.018 0.010 +/- 0.017 0.000 +/- 0.230

-0.006 +/- 0.017 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/19/15 0.018 +/- 0.044

-0.041 4 0.083 0.048 4 0.073 15.200+/- 1.500

-0.002 +/- 0.030

-0.015 +/- 0.048 10/06/15 0.031 +/- 0.021 0.036 +/- 0.044 0.037 + 0.078 15.940 +/- 0.700

-0.010 +/- 0.019 0.011 +/- 0.025 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04119105 0.012+/-0.035 0.010+/- 0.350 0.019+/-0.095 0.960+/- 0.180 0.070+/-0.150 0.027 0.058 10/06/)5 0.021 +/- 0.023

-0.040 +/- 0.160 0.015 +/- 0.047 1.190 +/- 0.077 0.050 +/- 0.081 0.046 +/- 0.036 31 Ag-ll0m Be-7 Co-58 Co-60 Cr-51 Cs-134 04/20/)5 0.009 +/- 0.031 0.190 +/- 0.230 0.009 +/- 0.024

-0.024 +/- 0.022

-0.090 + 0.270

-0.008 +/- 0.026 11/03/)5 -0.005 +/- 0.031 0.170 i 0.280

-0.031 +/- 0.026

-0.003 +/- 0.022 0.160 +/- 0.420

-0.020 +/- 0.087 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 04/20/05 -0.004 +/- 0.028

-0.025 +/- 0.053 0.004 +/- 0.051 13.100 +/- 0.840 0.014 +/- 0.028 0.017 +/- 0.031 11/03/)5 -0.013 +/- 0.030 0.055 +/- 0.097

-0.080 +/- 0.160 12.170 +/- 0.630

-0.020 +/- 0.024 0.008 +/- 0.048 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/20/05 0.016 +/- 0.029 0.100 +/- 0.240

-0.014 +/- 0.073 2.680 +/- 0.130 0.083 +/- 0.098 0.069 +/- 0.051 11/03/)5 0.020+0.035 0.180+/- 0.260

-0.018+0.080 5.420+/-0.140

-0.070+/-0.100

-0.013 + 0.070 32 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 04/19/1)5 0.045 +/- 0.038

-0.200 +/- 0.260

-0.006 +/- 0.027 0.026 +/- 0.031

-0.080 +/- 0.300 0.0)6 +/- 0.031 10/06/1)5 -0.007 +/- 0.036 0.060 +/- 0.270 0.017 +/- 0.029 0.008 +/- 0.028

-0.090 +/- 0.330 O.OD2 +/- 0.026 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/19/05 0.017 +/- 0.033 0.009 + 0.064

-0.013 +/- 0.056 12.800 +/- 1.200 0.027 +/- 0.032 0.001 +/- 0.034 10/06/05 0.000 +/- 0.035

-0.017 +/- 0.068 0.060+/- 0.120 12.800 +/- 1.100 0.011 + 0.028

-0.002 + 0.039 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/19/05 -0.008 +/- 0.031 0.050 +/- 0.260 0.008 +/- 0.077 0.810 +/- 0.130

-0.030 +/- 0.150 0.015 +/- 0.047 10/06/)5 -0.008 +/- 0.030 0.160 +/- 0.250 0.021 +/- 0.070 0.980 +/- 0.130 0.030 +/- 0.140 0.008 +/- 0.050 33 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 04/19/05 -0.008 I 0.029 0.090 +/- 0.180

-0.003 + 0.023 0.003 +/- 0.022 0.000 +/- 0.180

-0.004 +/- 0.020 11/03/)5 0.009 +/- 0.033 0.220 + 0.190 0.023 +/- 0.028 0.007 +/- 0.024 0.070 +/- 0.210 0.015 +/- 0.019 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/19/05 0.004 + 0.023 0.012 +/- 0.048 0.014 + 0.040 11.900 +/- 0.930

-0.011 +/- 0.024 0.011 +/- 0.028 11/03/05 0.008 + 0.023

-0.020 +/- 0.062 0.037+/- 0.085 14.600 +/- 1.100

-0.030+/- 0.026 0.0)4 +/- 0.035

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 15, Bottom Sediment (pCi/g dry)

Page 2 of 3 Location Collec:ion Isotope Date 33 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/19/05 0.007 +/- 0.022

-0.050 +/- 0.190 0.025 +/- 0.056 0.900 +/- 0.099

-0.080 +/- 0.110 0.0)2 +/- 0.043 11/03/05 0.020+/- 0.023 0.060+/- 0.180

-0.011 +/- 0.049 0.267 +/- 0.093 0.036+/- 0.057 0.031 + 0.043 34 Ag-ll0m Be-7 Co-58 Co-60 Cr-51 Cs-134 04/20/05 0.023 +/- 0.040

-0.090 +/- 0.190 0.036 +/- 0.029

-0.001 +/- 0.030

-0.230 +/- 0.240

-0.002 +/- 0.025 11/03/05 0.009+/- 0.032 0.090+/- 0.200

-0.010+/- 0.021 0.001 0.023 0.050+/-0.240

-0.003 4 0.021 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/20/05 0.033 +/- 0.030 0.029 +/- 0.068 0.017 +/- 0.046 18.000 +/- 1.500 0.003 +/- 0.025

-0.010 +/- 0.031 11/03/05 -0.008+/- 0.023 0.0174 0.058 0.0674 0.092 12.800+/- 1.100 0.009+/- 0.020

-0.022 :1 0.029 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/20/05 -0.013 +/- 0.022 0.140 +/- 0.240 0.012 0.061 0.120 +/- 0.160 0.030+/- 0.077

-0.009 1 0.037 11/03/05 -0.015 +/- 0.024

-0.010 +/- 0.200 0.009 +/- 0.051 0.170 + 0.120

-0.004 +/- 0.066 0.013 +/- 0.031 35-X Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 04/19/05 -0.024 +/- 0.048

-0.220 +/- 0.260 0.002 +/- 0.031 0.034 +/- 0.033 0.360 +/- 0.350

-0.021 +/- 0.033 10/06/05 -0.015 + 0.039 0.190 +/- 0.270

-0.021 +/- 0.035

-0.002 +/- 0.026

-0.010 +/- 0.340 0.037 +/- 0.028 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/19/05 0.014 +/- 0.040 0.025 + 0.073

-0.015 +/- 0.063 12.900 + 1.300 0.027 + 0.034

-0.039 + 0.038 10/06/05 0.038 +/- 0.038

-0.007 +/- 0.075

-0.080 + 0.120 13.300 + 1.100

-0.003 +/- 0.029 0.027 +/- 0.047 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/19/35 0.024 +/- 0.031

-0.020 +/- 0.300 0.030 +/- 0.086 0.770 +/- 0.140

-0.040 +/- 0.073

-0.029 +/- 0.050 10/06/35 -0.022 +/- 0.036

-0.080 +/- 0.300 0.022 +/- 0.080 0.830 +/- 0.140 0.080 +/- 0.140 0.039 +/- 0.054 37-C Ag-I lOm Be-7 Co-58 Co-60 Cr-51 Cs-134 04/19/35 0.003 +/- 0.035

-0.050 +/- 0.200 0.000 +/- 0.023

-0.002 +/- 0.031

-0.200 +/- 0.190

-0.001 +/- 0.029 11/03/35 -0.007 +/- 0.031 0.200 +/- 0.200 0.002 +/- 0.026

-0.008 +/- 0.025

-0.330 +/- 0.250 0.009 +/- 0.022 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/19/05 -0.005 +/- 0.026 0.014 +/- 0.066 0.025 4 0.040 17.600 1.400

-0.002 +/- 0.029

-0.017 0.031 1 1/03/35 -0.008 +/- 0.021

-0.040 +/- 0.065 0.014 4 0.095 15.900 +/- 1.200

-0.009 +/- 0.024

-0.030 +/- 0.054 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/19/35 -0.003 + 0.024

-0.080+/- 0.230 0.004+/- 0.066 0.320+/- 0.110

-0.032 +/- 0.071

-0.017 +/- 0.045 11/03/05 -0.007 +/- 0.027 0.000 +/- 0.200

-0.051 +/- 0.061 0.250 +/- 0.110 0.010 +/- 0.130 0.030 +/- 0.041

Dominion Nuclear Connecticut. Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 15, Bottom Sediment (pCi/g dry)

Page 3 of 3 Location Collection Isotope Date 39-X Ag-ll0m Be-7 Co-58 Co-60 Cr-51 Cs-134 04/19/0)5 -0.006+/-0.023 0.200+/-0.180 0.001+/-0.019 0.051 +/- 0.019 0.060+/-0.200 0.0.31 +/- 0.068 10/06/05 0.026 + 0.045 0.020 + 0.290

-0.010 + 0.032 0.073 + 0.035

-0.260 +/- 0.370

-0.009 + 0.030 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 04/19/1)5 0.144 +/- 0.030 0.023 +/- 0.042

-0.035 +/- 0.043 16.500 +/- 0.780

-0.003 +/- 0.018

-0.007 +/- 0.024 10/06/0)5 0.135+/-0.053

-0.013+/-0.082

-0.030+/- 0.140 18.200+/- 1.300 0.024+/-0.031

-0.031 +/- 0.045 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 04/19/0)5 0.004 +/- 0.019

-0.020 +/- 0.180 0.014 +/- 0.052 0.745 +/- 0.087

-0.009 +/- 0.090 0.023 +/- 0.036 10/06/05 -0.030 +/- 0.036 0.030 +/- 0.260 0.053 +/- 0.077 0.820 + 0.140 0.010 +/- 0.150

-0.014 + 0.056 67-X Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 05/11/05 -0.004 +/- 0.018 0.000 + 0.110

-0.008 +/- 0.014 0.003 +/- 0.014 0.050 +/- 0.130

-0.07 + 0.013 11/01/05 0.045 + 0.049 0.030 + 0.300 0.001 4 0.030

-0.013 + 0.037 0.020 +/- 0.390

-0.001 +/- 0.034 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 05/11/0)5 0.133 +/- 0.023

-0.026 +/- 0.033 0.010 0.024 14.700 +/- 0.610 0.005 +/- 0.014 0.01)6 +/- 0.016 11/01/05 0.107 4 0.056 0.032 + 0.075

-0.060 0.100 14.100 +/- 1.500 0.005 +/- 0.035

-0.032 + 0.044 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 05/11/05 0.002 +/- 0.015 0.070 +/- 0.130

-0.007 +/- 0.036 1.020 +/- 0.061 0.022 +/- 0.063 0.014 +/- 0.024 11/01/05 -0.002 + 0.039 0.000 +/- 0.290 0.028 +/- 0.092 1.300 4 0.160

-0.030+/- 0.170 0.023 +/- 0.062 69-X Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 06/28/05 -0.050 +/- 0.050 0.120 +/- 0.280 0.001 +/- 0.027 0.004 +/- 0.036 0.370 +/- 0.300

-0.00)4 +/- 0.046 11/03/05 0.000 +/- 0.035 0.020 +/- 0.170 0.006 4 0.028

-0.006 +/- 0.030 0.100 +/- 0.250

-0.0)8 +/- 0.020 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb--95 06/28/05 0.032 + 0.037 0.022 +/- 0.083

-0.027 + 0.080 15.800 + 1.600 0.014 +/- 0.037 0.0:26 +/- 0.035 11/03/05 0.010+/-0.021 0.012+/- 0.053

-0.048+/-0.091 14.600+/- 1.100 0.004+/-0.020 0.013 +/- 0.032 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 06/28/(15 -0.029 +/- 0.033

-0.150 +/- 0.310 0.045 + 0.076 0.220 +/- 0.160 0.000 +/- 0.090

-0.034 +/- 0.042 11/03/(lS -0.006 + 0.026

-0.120 +/- 0.200 0.016 4 0.048 0.270 + 0.130

-0.028 +/- 0.062

-0.033 +/- 0.037

Dominion Nuclear 'Zonnecticut. Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 16, Aquatic Flora - Fucus (pCi/g wet)

Page ] of 3 Location Collection Isotope Date 29 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 02/15/35 -0.002 +/- 0.009 0.043 +/- 0.055 0.003 +/- 0.006 0.003 +/- 0.007

-0.017 +/- 0.046 0.0)2 +/- 0.007 04/19/D5 0.000 +/- 0.012 0.076 + 0.053 0.005 + 0.006

-0.004 +/- 0.011 0.001 +/- 0.049 0.0)5 +/- 0.009 09/14/D5 0.006 +/- 0.006 0.013 + 0.032 0.002 +/- 0.005

-0.001 + 0.007

-0.019 +/- 0.033 0.0)6 +/- 0.005 09/28/D5 0.001 +/- 0.009 0.046 + 0.051 0.001 +/- 0.007 0.009 +/- 0.010 0.040 +/- 0.047 0.030 +/- 0.008 11/07/05 -0.001 +/- 0.005 0.029 +/- 0.036 0.001 +/- 0.004 0.002 +/- 0.006 0.011 +/- 0.028 0.034 +/- 0.004 11/08/35 0.006 +/- 0.011 0.067 +/- 0.079

-0.001 +/- 0.008 0.010 +/- 0.012

-0.030 +/- 0.061

-0.006 +/- 0.010 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/15/05 -0.003 4 0.006 0.014 4 0.018 0.009+/- 0.009 3.890 +/-0.290

-0.005 +/-0.007

-0.001 +/- 0.006 04/19/D5 0.006+/- 0.007 0.003 + 0.031 0.009+/- 0.010 4.300 + 0.480

-0.004+/- 0.009

-0.009 +/- 0.009 09/14/D5 0.000 +/- 0.004

-0.001 + 0.015 0.027 +/- 0.010 5.970 +/- 0.250 0.003 +/- 0.004 0.032 +/- 0.005 09/28/05 -0.001 i 0.006 0.002 +/- 0.020 0.006 +/- 0.007 6.850 +/- 0.400 0.005 i 0.007

-0.006 +/- 0.007 11/07/05 0.001 + 0.004

-0.006 +/- 0.011 0.010 +/- 0.007 3.640 +/- 0.230 0.003 +/- 0.004 0.033 +/- 0.004 11/08/05 0.004 + 0.008 0.001 + 0.023 0.021 +/- 0.013 6.190 +/- 0.470 0.004 + 0.008

-0.005 i 0.008 Ru-1 03 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/15/05 -0.002 +/- 0.006

-0.003 +/- 0.058 0.009 + 0.015 0.062 +/- 0.032

-0.016 +/- 0.020

-0.004 +/- 0.012 04/19/D5 -0.001 +/- 0.007

-0.034 +/- 0.055 0.006 +/- 0.017 0.024 + 0.030

-0.001 +/- 0.024 0.0D2 +/- 0.011 09/14/05 -0.001 +/- 0.004

-0.005 +/- 0.039 0.006 +/- 0.009 0.049 + 0.020

-0.010 +/- 0.012

-0.006 + 0.008 09/28/35 0.000 +/- 0.006

-0.013 +/- 0.055

-0.001 +/- 0.015 0.036 +/- 0.029

-0.007 +/- 0.020

-0.002 + 0.012 11/07/35 0.000 + 0.003

-0.007 +/- 0.035

-0.001 +/- 0.008 0.024 + 0.021

-0.009 +/- 0.011

-0.004 + 0.006 11/08/D5 0.002 + 0.008

-0.012 +/- 0.080 0.004 i 0.021 0.045 +/- 0.036 0.013 +/- 0.022 0.007 + 0.015 32-X Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 02/15/05 0.009 i 0.008 0.060 +/- 0.045 0.000 +/- 0.006 0.005 +/- 0.006

-0.014 +/- 0.047 0.033 +/- 0.006 04/19/D5 0.000 +/- 0.018 0.044 +/- 0.095 0.000 +/- 0.009 0.012 +/- 0.013

-0.006 +/- 0.080

-0.002 +/- 0.009 08/24/35 0.000 +/- 0.018

-0.030+/- 0.110 0.001 +/- 0.012

-0.007 4 0.020 0.110 +/- 0.120 0.032 +/- 0.011 09/28/35 -0.008 +/- 0.017 0.000 +/- 0.072 0.010 +/- 0.011

-0.003 +/- 0.017 0.029 +/- 0.086 0.0)3 + 0.016 11/07/35 -0.001 +/- 0.010 0.068 + 0.061

-0.001 +/- 0.008 0.013 + 0.011 0.012 + 0.053 0.0)4 +/- 0.008 11/08/35 0.004 +/- 0.004 0.085 I 0.050 0.006 +/- 0.005

-0.005 +/- 0.008 0.013 +/- 0.034 0.002 +/- 0.003 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/15/35 -0.002 + 0.006

-0.016 +/- 0.019

-0.003 +/- 0.008 3.770 +/- 0.270

-0.002 +/- 0.006

-0.008 +/- 0.006 04/19/05 -0.002 +/- 0.010 0.018 4 0.046 0.000 +/- 0.017 5.050 +/- 0.580 0.001 +/- 0.010

-0.002 +/- 0.012 08/24/35 -0.007 +/- 0.014 0.024 4 0.050 0.021 +/-0.051 6.940 +/- 0.680

-0.003 +/- 0.011 0.014+/- 0.016 09/28/35 -0.004 + 0.011

-0.006+/- 0.034 0.007 0.013 6.770+/- 0.660 0.007+/- 0.010 0.010+/- 0.012 11/07/35 -0.004 +/- 0.007

-0.004 +/- 0.019 0.010 +/- 0.011 5.380 +/- 0.390

-0.004 +/- 0.007 0.0)2 +/- 0.008 11/08/)5 0.000 +/- 0.005 0.005 +/- 0.013 0.023 +/- 0.009 6.340 +/- 0.280 0.002 +/- 0.005 0.0)0 +/- 0.005 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/15/35 -0.005 +/- 0.005 0.035 +/- 0.049

-0.011 +/- 0.014 0.041 +/- 0.025

-0.011 +/- 0.015

-0.004 +/- 0.009 04/19/05 -0.003 +/- 0.010 0.000 +/- 0.097 0.015 +/- 0.022 0.034 +/- 0.048

-0.025 +/- 0.027

-0.008 +/- 0.019 08/24/35 0.007 +/- 0.011

-0.050 + 0.100 0.004 +/- 0.026 0.036 +/- 0.051 0.009 4 0.031 0.017 +/- 0.025 09/28/35 0.000 +/- 0.010

-0.009 +/- 0.097 0.005 +/- 0.026 0.014 +/- 0.050

-0.052 +/- 0.036

-0.013 +/- 0.020 11/07/05 0.001 +/- 0.007

-0.014 +/- 0.057

-0.020 +/- 0.018 0.036 +/- 0.034

-0.011 +/- 0.020

-0.008 +/- 0.010 11/08/35 -0.001 +/- 0.004 0.000+/-0.041

-0.001 +/- 0.011 0.055+/-0.018 0.000+/-0.013

-0.001 +/- 0.008 33-X

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 16, Aquatic Flora - Fucus (pCi/g wet)

Page 2 of 3 Location Collection Isotope Date 33-X Ag-ll0m Be-7 Co-58 Co-60 Cr-51 Cs-134 02/18/05 0.003 +/- 0.008 0.045 +/- 0.061

-0.001 +/- 0.006 0.001 +/- 0.006 0.020 +/- 0.066 0.003 +/- 0.006 04/19Y05 0.005+/-0.013 0.056 0.069

-0.001+/-0.009

-0.001+/-0.010

-0.024 +/-0.072 0.006+/-0.010 08/24,05 -0.010 + 0.012

-0.065 +/- 0.094 0.002 +/- 0.010

-0.004 +/- 0.013

-0.080 +/- 0.100 0.007 +/- 0.011 11/08/05 -0.012 +/- 0.010 0.037 +/- 0.063 0.004 4 0.009 0.009 + 0.013 0.003 +/- 0.055 0.004 +/- 0.010 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/18/05 0.001 +/- 0.006 0.006 +/- 0.024 0.001 +/- 0.030 5.840 4 0.320

-0.003 +/- 0.006

-0.C'04 + 0.008 04/19/05 -0.003 +/- 0.010

-0.020 4 0.030 0.018 +/- 0.014 4.270 +/- 0.460 0.004 +/- 0.009

-0.001 +/- 0.010 08/24/05 0.006 4 0.010

-0.007 +/- 0.035 0.032 +/- 0.038 6.970 +/- 0.560

-0.002 + 0.010 0.002 + 0.014 11/08/05 0.003 4 0.008 0.024 + 0.022 0.020 +/- 0.017 5.750 +/- 0.520 0.000 +/- 0.009

-0.004 +/- 0.010 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/18/05 0.000 +/- 0.007

-0.007 +/- 0.050

-0.001 +/-0.013 0.035 +/- 0.029 0.025 +/- 0.030 0.007 + 0.010 04/19/05 -0.004 +/- 0.008

-0.030 +/- 0.078

-0.007 +/- 0.020 0.084 + 0.043

-0.027 4 0.028 0.004 +/- 0.016 08/24/05 -0.002 +/- 0.009

-0.019 +/- 0.095 0.006 +/- 0.021 0.013 +/- 0.039

-0.021 + 0.026

-0.014 + 0.021 11/08/05 0.002 +/- 0.007 0.023 +/- 0.070 0.006 +/- 0.018 0.050 +/- 0.046

-0.006 +/- 0.027 0.007 +/- 0.015 35-X Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 02/15/05 -0.003 4 0.008 0.055 +/- 0.058 0.001 + 0.007

-0.004 +/- 0.007

-0.011 +/- 0.053 0.000 +/- 0.007 04/19/05 -0.003 +/- 0.015 0.015 +/- 0.066

-0.003 +/- 0.010 0.010 +/- 0.013

-0.003 0.069 0.007 + 0.012 08/16/05 0.002+/- 0.019 0.000+/- 0.120 0.009+/- 0.015

-0.003 +/-0.020

-0.030+/-0.110

-O.COI +/-0.013 11/08/05 -0.007+/-0.014 0.092+/-0.075

-0.002+/-0.008 0.012 +/- 0.016

-0.008 0.059 0.001+/-0.011 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/15/05 -0.002 +/- 0.007

-0.006 +/- 0.021 0.004 +/- 0.011 3.150 +/- 0.280

-0.003 +/- 0.006 0.000 +/- 0.007 04/19/05 -0.005 +/- 0.008 0.001 +/- 0.038 0.019 +/- 0.015 4.780 +/- 0.600 0.000 +/- 0.011 0.000 +/- 0.008 08/16/05 -0.00 1 4 0.011

-0.007 + 0.054 0.052 +/- 0.057 5.940 +/- 0.660

-0.005 +/- 0.013

-O.C03 4 0.020 11/08/05 0.002+/- 0.011 0.018+/-0.026 0.018 +/-0.017 6.270 +/- 0.570

-0.003 +/-0.010

-0.C'08+/-0.009 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/15/05 -0.003 +/- 0.005

-0.013 +/- 0.059

-0.003 +/- 0.017 0.035 +/- 0.031

-0.017 +/- 0.018 0.015 +/- 0.012 04/19Y05 0.001 +/- 0.008 0.029 +/- 0.083 0.002 +/- 0.020 0.049 +/- 0.042

-0.017 +/- 0.029 0.006 +/- 0.018 08/16/05 -0.002+/- 0.013

-0.085+/- 0.078 0.009+/-0.027 0.035+/- 0.051

-0.038+/-0.036 0.016+/-0.026 11/08/05 -0.003 +/- 0.007 0.003 +/- 0.093 0.012+/-0.022 0.042+/- 0.056 0.010 +/-0.031 0.011 +/- 0.019 36-X Ag-ll0m Be-7 Co-58 Co-60 Cr-51 Cs-134 03/07/05 -0.004 +/- 0.006 0.031 +/- 0.043 0.006 +/- 0.006 0.001 +/- 0.006

-0.036 +/- 0.036 0.003 +/- 0.006 04/19/05 0.005 +/- 0.015 0.078 +/- 0.085 0.000 +/- 0.009

-0.014 +/- 0.012 0.026 +/- 0.082 0.004 +/- 0.010 08/16/05 -0.007 +/- 0.012 0.054 +/- 0.077

-0.002 +/- 0.010 0.002 +/- 0.013 0.012 +/- 0.088 0.004 +/- 0.010 11/08/05 -0.002 +/- 0.013 0.073 +/- 0.086

-0.002 +/- 0.009

-0.011 +/- 0.013 0.082 +/- 0.072 0.009 +/- 0.011 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/07/05 0.001 +/- 0.005 0.011 +/- 0.018 0.016+/- 0.013 3.630 +/- 0.280

-0.003 +/- 0.005

-0.002 + 0.007 04/19/05 0.011+/-0.012 0.006+/-0.036 0.021 +/- 0.016 4.530 +/- 0.590

-0.002+/-0.010 0.009 +/- 0.011 08/16/05 0.001 +/- 0.008

-0.006 +/- 0.040 0.003 +/- 0.046 4.500 +/- 0.470

-0.001 + 0.009

-O.C06 +/- 0.011 11/08/05 -0.010 +/- 0.010 0.007 +/- 0.025 0.014 + 0.015 6.970 +/- 0.520 0.005 +/- 0.009

-0.004 +/- 0.011

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Opeiating Report 2005 Table 16, Aquatic Flora - Fucus (pCi/g wet)

Page 3 of 3 Location Collection Isotope Date 36-X Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/07/O5 0.002 4 0.005 0.041 L 0.039

-0.001 +/- 0.011 0.035 +/- 0.030

-0.007 +/- 0.014 0.006 i 0.011 04/19/)5 0.009 +/- 0.009 0.025 + 0.091

-0.016 +/- 0.023 0.077 +/- 0.067 0.000 +/- 0.030

-0.013 +/- 0.020 08/16/)15 -0.009 +/- 0.009 0.069 +/- 0.081 0.007 +/- 0.020 0.052 + 0.036 0.004 +/- 0.027

-0.012 +/- 0.020 11/08/)5 0.004 + 0.009 0.003 + 0.087 0.001 +/- 0.021 0.084 + 0.046

-0.011 +/- 0.027 0.0)7 +/- 0.016

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 17-A, Fish - Flounder (pCi/g wet)

Page I of I Location Collection Isotope Date 32 Ag-lOim Be-7 Co-58 Co-60 Cr-51 Cs-134 03/31/05 H

05/03/05 0.025 +/- 0.031

-0.110 +/- 0.200 0.004 +/- 0.018 0.006 +/- 0.015

-0.020 +/- 0.190

-0.C'07 +/- 0.022 06/01/05 0.020 +/- 0.031 0.040 +/- 0.170 0.001 +/- 0.019

-0.014 +/- 0.028

-0.090 +/- 0.150 0.016 +/- 0.024 07/28/05 -0.011

0.010 0.043 +/- 0.064

-0.003 +/- 0.007 0.000 +/- 0.008

-0.035 +/- 0.074

-0.010 +/- 0.008 10/04/05 0.001 4 0.019 0.040 +/- 0.130 0.010 4 0.015

-0.005 4 0.015 0.030 + 0.160 0.004 +/- 0.015 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 05/03/05 0.008 + 0.022 0.030 + 0.052 0.009 + 0.028 3.600 +/- 0.700

-0.013 +/- 0.018

-0.011 +/- 0.024 06/01/05 0.023 +/- 0.023

-0.086 +/- 0.070

-0.002 +/- 0.026 4.030 +/- 0.770

-0.005 +/- 0.015 0.006 +/- 0.019 07/28/05 -0.002 +/- 0.008 0.004 +/- 0.022

-0.004 +/- 0.021 3.770 +/- 0.260

-0.003 +/- 0.007 0.000 +/- 0.009 10/04/05 0.012 +/- 0.014

-0.040 +/- 0.038

-0.005 +/- 0.050 4.160 +/- 0.510 0.000 +/- 0.013 0.013 +/- 0.018 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 05/03/05 0.000 +/- 0.015 0.020 +/- 0.180

-0.013 +/- 0.045 0.026 +/- 0.076

-0.030 +/- 0.054 0.004 +/- 0.035 06/01/05 -0.002+/- 0.016 0.150 + 0.210

-0.034 +/- 0.055 0.016+/- 0.083 0.000 +/- 0.046

-0.014+/-0.036 07/28/05 0.002 +/- 0.008

-0.037 +/- 0.067

-0.005 +/- 0.020

-0.025 +/- 0.028

-0.009 +/- 0.017

-O.C 18 +/- 0.013 10/04/05 -0.003 +/- 0.017

-0.090+/- 0.140 0.008 +/- 0.037

-0.016 +/- 0.051

-0.011 +/- 0.033

-O.C06+/- 0.026 35 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 05/03/S5 0.013 +/- 0.028 0.040 +/- 0.150 0.023 +/- 0.022

-0.006 +/- 0.026 0.100 +/- 0.160 0.003 +/- 0.019 07/28/35 0.001 +/- 0.011 0.021 +/- 0.062

-0.001 +/- 0.008

-0.003 +/- 0.009

-0.037 +/- 0.078 0.003 +/- 0.008 10/04/35 0.015 +/- 0.024 0.030 +/- 0.190

-0.006 +/- 0.026

-0.013 +/- 0.027

-0.050 +/- 0.280

-0.006 +/- 0.026 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 05/03/)5 0.000 +/- 0.023 0.021 +/- 0.058

-0.011 +/- 0.028 3.820 +/- 0.770 0.005 + 0.020 0.000 +/- 0.018 07/28/)5 0.005 +/- 0.007

-0.004 +/- 0.022 0.003 +/- 0.021 3.670 +/- 0.270

-0.007 +/- 0.008 0.001 +/- 0.010 10/041)5 0.008 +/- 0.023 0.0 11 i 0.048 0.029 +/- 0.078 3.620 i 0.770 0.01 1 i 0.018

-0.023 + 0.031 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 05/03/05 0.018 +/- 0.019

-0.060 +/- 0.190

-0.026 +/- 0.047 0.037 +/- 0.081 0.046 +/- 0.046

-0.013 +0.030 07/28/05 -0.007 +/- 0.009 0.056+/- 0.069

-0.002 +/- 0.017

-0.013 +/- 0.031

-0.012 +/- 0.019

-0.005 i 0.014 10/04/105 -0.010 +/- 0.025

-0.060 +/- 0.200

-0.052 +/- 0.060

-0.019 +/- 0.057

-0.071 +/- 0.066

-0.072 +/- 0.046

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 17-B, Fish - Other (pCi/g wet)

Page 1 of 2 Location CollectDn Sample Type Isotope Date 29-X Ag-110m Be-7 Co-58 Co-60 Cr-51 09/28/05 STRIPED BASS

-0.001 +/- 0.033

-0.110 +/- 0.170

-0.013 +/- 0.020

-0.029 +/- 0.032

-1.030 +/- 0.120 Cs-134 Cs-137 Fe-59 1-131 K-40 09/28/C5 STRIPED BASS

-0.010+/- 0.025 0.018 +/- 0.018 0.013 +/- 0.056 0.003 +/- 0.018

1.410* 0.760 Mln-54 Nb-95 Ru-103 Ru-106 Sb-125 09/28/05 STRIPED BASS 0.009 +/- 0.023 0.012 +/- 0.020

-0.012 +/- 0.018 0.110 +/- 0.180

-0.013 +/- 0.050 Th-228 Zn-65 Zr-95 09/28/C5 STRIPED BASS 0.071 +/- 0.078

-0.043 +/- 0.047 0.003 + 0.037 32 Ag-ll0m Be-7 Co-58 Co-60 Cr-51 01/13/05 BLUEFISH 0.015 +/- 0.021 0.040+/- 0.190

-0.003 +/- 0.021 0.009+/- 0.025 0.110 : 0.240 05/03/05 TAUTOG

-0.006 +/- 0.028 0.010 +/- 0.130

-0.008 +/- 0.015 0.010 +/- 0.023

-).080 +/- 0.170 08/03/05 TAUTOG 0.013 +/- 0.015

-0.055 +/- 0.074 0.005 +/- 0.009

-0.004 +/- 0.014 4).023 +/- 0.082 10/31/05 TAUTOG 0.003 +/- 0.019 0.040 +/- 0.120

-0.007 +/- 0.016

-0.005 + 0.017 0.130+/- 0.150 Cs-134 Cs-137 Fe-59 1-131 K-40 01/13/05 BLUEFISH 0.003 +/- 0.019 0.020 + 0.020 0.068 +/- 0.092

-0.063 +/- 0.080 3310+/- 0.790 05/03/05 TAUTOG 0.017 +/- 0.019 0.005 +/- 0.020

-0.005 +/- 0.053

-0.019 +/- 0.030 3310 +/- 0.680 08/03/05 TAUTOG 0.000+/-0.011 0.002+/-0.010 0.020+/- 0.029 0.013+/-0.016

.800+/-0.380 10/31/05 TAUTOG 0.002 +/- 0.017

-0.013 +/- 0.015

-0.005 +/- 0.031

-0.025 +/- 0.028 4.140 +/- 0.540 vIn-54 Nb-95 Ru-103 Ru-106 Sb-125 01/13/05 BLUEFISH 0.000 +/- 0.020 0.002 +/- 0.030

-0.015 +/- 0.030

-0.100 +/- 0.200 4).005 +/- 0.049 05/03/05 TAUTOG

-0.004 +/- 0.021 0.011 +/- 0.021

-0.008 +/- 0.017

-0.050 +/- 0.160 0.012+/- 0.057 08/03/05 TAUTOG 0.001 +/- 0.010 0.002 +/- 0.010 0.002 +/- 0.010

-0.069 + 0.094

-0.013 +/- 0.022 10/31/05 TAUTOG 0.001 +/- 0.015

-0.008 +/- 0.016 0.003 +/- 0.014

-0.060 +/- 0.150

-0.011 +/- 0.042 Th-228 Zn-65 Zr-95 01/13/05 BLUEFISH 0.054 + 0.097 0.026 +/- 0.044

-0.026 +/- 0.042 05/03/05 TAUTOG 0.024 + 0.078 0.000 +/- 0.049 0.013 +/- 0.035 08/03/05 TAUTOG

-0.032 +/- 0.042

-0.014 +/- 0.024

-0.012 +/- 0.017 10/31/05 TAUTOG 0.032 +/- 0.055 0.006+/- 0.041 0.012+/- 0.029 35 Ag-110m Be-7 Co-58 Co-60 Cr-51 03/31/05 FISH-OTHER I

06/01/05 STRIPED BASS 0.001 +/- 0.026

-0.010+/- 0.140

-0.001 +/- 0.025 0.005+/- 0.018

-0.020+/- 0.130 08/03/05 STRIPED BASS 0.003 +/- 0.012

-0.020 +/- 0.069

-0.005 +/- 0.009 0.006 +/- 0.013 (0.047+/- 0.072 10,'24/05 TAUTOG

-0.002 +/- 0.021

-0.020 +/- 0.120

-0.006 +/- 0.016 0.010 +/- 0.017

().080 +/- 0.160 Cs-134 Cs-137 Fe-59 1-131 K-40 06/01/05 STRIPED BASS 0.011 + 0.023 0.004 +/- 0.020

-0.031 +/- 0.063 0.000 +/- 0.022 3.820 +/- 0.730 08/03/05 STRIPED BASS 0.000 +/- 0.011 0.008 +/- 0.009 0.021 +/- 0.032

-0.008 +/- 0.013 3.580 +/- 0.370 10/24/05 TAUTOG

-0.010 +/- 0.018

-0.005 +/- 0.014 0.016+/- 0.041 0.003 +/- 0.052 1.840 +/- 0.540 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 06/01/05 STRIPED BASS 0.010 +/- 0.018

-0.013 + 0.023 0.005 +/- 0.015 0.020 + 0.170

-0.015 + 0.045 08/03/05 STRIPED BASS -0.001 +/- 0.010 0.003 +/- 0.011 0.006 + 0.009

-0.058 + 0.086 (0.020 + 0.022 10/24/05 TAUTOG

-0.009 +/- 0.015 0.011 +/- 0.023

-0.013 +/- 0.019 0.010 +/- 0.150

-0.010 +/- 0.042 Th-228 Zn-65 Zr-95 06/01/05 STRIPED BASS -0.019 +/- 0.059 0.005 +/- 0.041

-0.006 + 0.034 08/03/05 STRIPED BASS 0.002 +/- 0.035 0.005 +/- 0.023 0.016 +/- 0.017

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 17-B, Fish - Other (pCi/g wet)

Page 2 of 2 Location Collecticn Sample Type Isotope Date 35 Th-228 Zn-65 Zr-95 10/24/05 TAUTOG 0.009 + 0.051

-0.014 + 0.041 0.000 + 0.024 40-X Ag-110m Be-7 Co-58 Co-60 Cr-51 01/13/05 STRIPED BASS

-0.017 + 0.025 0.140 + 0.190

-0.007 + 0.025

-0.002 + 0.025

-0.100 + 0.170 04/14/0.5 STRIPED BASS 0.012+ 0.031

-0.190+/-0.200 0.014 + 0.024 0.011+0.022

-C'.100+ 0.240 07/29/0.5 STRIPED BASS

-0.007 + 0.014

-0.014+ 0.080 0.000 1 0.010

-0.002+ 0.013 0.030+/- 0.100 11/28/0.5 STRIPED BASS 0.010 + 0.023 0.120 + 0.180

-0.003 + 0.020

-0.003 +/- 0.021 0.140 + 0.200 Cs-134 Cs-137 Fe-59 1-131 K40 01/13/0.5 STRIPED BASS 0.004 + 0.023 0.003 + 0.021

-0.040 + 0.110 0.057 + 0.082 3.380 + 0.840 04/14/0.5 STRIPED BASS

-0.002 + 0.024 0.003 + 0.028 0.004 + 0.073 0.004 + 0.052 3.340 + 0.800 07/29/0.5 STRIPED BASS

-0.001 + 0.011 0.005 + 0.011 0.014 +/- 0.029 0.002 4 0.027 3.330 + 0.340 11/28/0.5 STRIPED BASS 0.005 + 0.015 0.000 + 0.020 0.005 + 0.040

-0.016 + 0.058 3.530 + 0.570 Mn-54 Nb-95 Ru-103 Ru-106 Sb-125 01/13/0.5 STRIPED BASS 0.003 + 0.023

-0.004 + 0.028

-0.003 + 0.022 0.070 + 0.210

-0.014 + 0.058 04/14/0.5 STRIPED BASS

-0.008 + 0.025

-0.011 + 0.031

-0.027 + 0.025 0.020 + 0.250

-C.043 + 0.048 07/29/0.5 STRIPED BASS 0.000 + 0.011

-0.009 + 0.012

-0.003 + 0.011

-0.055 +/- 0.097 0.008 + 0.025 11/28/0.5 STRIPED BASS 0.026 + 0.020

-0.012 + 0.027

-0.009 + 0.021 0.140 + 0.190 0.033 + 0.054 Th-228 Zn-65 Zr-95 01/13/0;5 STRIPED BASS

-0.010 + 0.089 0.007 + 0.049 0.014 + 0.035 04/14/0.5 STRIPED BASS 0.020 + 0.110

-0.027 + 0.064

-0.003 + 0.042 07/29/0.5 STRIPED BASS 0.025 +/- 0.043

-0.004 + 0.025

-0.011 + 0.017 11/28/05 STRIPED BASS

-0.019 + 0.070 0.024 + 0.093

-0.026 + 0.037

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 18, Mussels (pCilg wet)

Page 1 of I Location Collection Isotope Date 28 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 03/31/05 J

06/29/0)5 0.001 4 0.011 0.081 +/- 0.074 0.007+/- 0.009

-0.001 +/- 0.009

-0.018+/- 0.087 0.0)1 +/- 0.010 08/17/0)5 0.000 +/- 0.007 0.003 +/- 0.049 0.001 +/- 0.006

-0.002 +/- 0.006

-0.007 +/- 0.052 0.01)4 +/- 0.006 12/12/05 0.004 +/- 0.034 0.180 +/- 0.200

-0.019 +/- 0.024

-0.002 +/- 0.030

-0.010 + 0.210 0.018 +/- 0.026 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 06/29/05 0.006 +/- 0.008 0.010 +/- 0.026 0.025 +/- 0.025 1.560 +/- 0.210

-0.008 +/- 0.008

-0.006 +/- 0.011 08/17/1)5 -0.001 +/- 0.005 0.018 +/- 0.021 0.003 +/- 0.023 1.750 +/- 0.160

-0.004 +/- 0.006 0.00)1 +/- 0.009 12/12/1)5 -0.002 +/- 0.018

-0.039 +/- 0.055 0.000 +/- 0.042 1.980 +/- 0.640

-0.004 +/- 0.023 0.016 +/- 0.024 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 06/29/1)5 -0.005 +/- 0.009

-0.032 +/- 0.080 0.007 +/- 0.021 0.023 + 0.032

-0.018 +/- 0.021 0.012 +/- 0.015 08/17/1)5 0.002 +/- 0.007

-0.020 +/- 0.043 0.005 +/- 0.012 0.056 +/- 0.028 0.004 +/- 0.016 0.01)2 +/- 0.011 12/12/05 -0.021 +/- 0.022 0.130 +/- 0.230

-0.010 +/- 0.064 0.080 +/- 0.110

-0.013 +/- 0.049

-0.0D1 +/- 0.031 30 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 02/23/0)5 0.004 +/- 0.039 0.000 +/- 0.270

-0.003 +/- 0.025 0.004 +/- 0.025 0.240 +/- 0.280 0.010 I

0.024 05/24/0)5 -0.013 +/- 0.024 0.050+/- 0.170 0.011 +/- 0.020

-0.002 +/- 0.019 0.010+/- 0.180 0.012 +/- 0.020 08/16/0)5 -0.010 +/- 0.008 0.006 +/- 0.055

-0.006 +/- 0.006 0.001 +/- 0.007 0.003 +/- 0.067 0.04)1 +/- 0.007 12/19/4)5 -0.019 +/- 0.027 0.020 +/- 0.170

-0.010 +/- 0.022 0.030 +/- 0.030

-0.050 +/- 0.250 0.011 +/- 0.022 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 02/23/0)5 -0.003 +/- 0.026

-0.046 +/- 0.065

-0.014 + 0.089 1.270 + 0.600

-0.003 +/- 0.022 0.00)7 +/- 0.030 05/24/1)5 -0.033 +/- 0.020

-0.033 + 0.048 0.016 +/- 0.052 1.760 +/- 0.480 0.007+ 0.016

-O.OD6 +/- 0.021 08/16/0)5 0.001 +/- 0.006 0.013 +/- 0.022

-0.015 +/- 0.031 1.540 +/- 0.170

-0.001 +/- 0.006 0.004 +/- 0.009 12/19/4)5 -0.004 +/- 0.024 0.072 +/- 0.061

-0.018 +/- 0.078 1.840 +/- 0.610 0.009 +/- 0.026

-0.029 +/- 0.028 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/23/1)5 0.001 +/- 0.023

-0.150 +/- 0.230 0.012 +/- 0.069 0.052 +/- 0.081

-0.008 +/- 0.066

-0.017 +/- 0.047 05/24/1)5 -0.021 +/- 0.021 0.000 +/- 0.190 0.001 + 0.046 0.046 +/- 0.067

-0.045 + 0.052 0.00)3 +/-0.024 08/16/1)5 -0.004 +/-'0.007

-0.013 +/- 0.056 0.002 +/- 0.013 0.005 +/- 0.027

-0.004 + 0.014 0.0)6 +/- 0.011 12/19/4)5 -0.012 +/- 0.023

-0.100 +/- 0.190

-0.034 +/- 0.050

-0.028 +/- 0.086

-0.053 +/- 0.050

-0.004 +/- 0.037

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 19, Oysters (pCi/g wet)

Page ] of`3 Location Collection Isotope Date 31 Ag-llOm 03/11/05 -0.006 +/- 0.023 06/07,105 0.002 +/- 0.026 09/21/'05 -0.011 +/- 0.028 12/19,05 -0.026 + 0.042 Cs-137 03/1 1105 -0.003 +/- 0.018 06/07105 0.000 +/- 0.025 09/21/05 -0.007 + 0.018 12/19M05 0.013 +/- 0.031 Ru-103 Be-7 Co-58 Co-60 Cr-51 Cs-134

-0.020+/- 0.130

-0.080 +/- 0.210 0.110 +/- 0.190

-0.050 +/- 0.260 Fe-59

-0.036 +/- 0.057 0.014 +/- 0.056

-0.006 +/- 0.058 0.010 +/- 0.057 Ru-106 0.015 +/- 0.018

-0.026 +/- 0.028

-0.007 +/- 0.019

-0.004 +/- 0.031 1-131 0.009 +/- 0.031 0.020 +/- 0.048

-0.039 +/- 0.059

-0.019 +/- 0.069 Sb-125

-0.002 +/- 0.018 0.021 +/- 0.033

-0.015 +/- 0.018 0.022 +/- 0.030 K-40 1.440 +/- 0.440 2.310 +/- 0.770 1.940 +/- 0.560 1.320 +/- 0.620 Th-228

-0.050 +/- 0.140 0.100 +/- 0.230 0.080 +/- 0.210 0.050 +/- 0.240 Mn-54 0.002 +/- 0.012 0.002 +/- 0.022 0.006 +/- 0.019

-0.007 +/- 0.025 Zn-65

-0.(05 4 0.018 0.01I +/- 0.027

-0.017 +/- 0.017 0.C'01 +/- 0.024 Nb-95 0.010 i 0.017

-0.009 +/- 0.032 O.C'13 +/- 0.024 0.012 +/- 0.038 Zr-95 03/11,05 -0.022 i 0.018 06/07j05 0.007 +/- 0.016 09/21M05 0.009+/- 0.018 12/19/05 -0.003 +/- 0.028 32 03/15/05 06/09/05 09/26/05 12/19/05 Ag-lOrm 0.037 +/- 0.031 0.085 +/- 0.025 0.057 +/- 0.024 0.022 +/- 0.019

-0.110 +/- 0.140

-0.120 +/- 0.220

-0.050 +/- 0.180 0.190 +/- 0.200 Be-7 0.030+/- 0.120

-0.020 +/- 0.160 0.190 +/- 0.190 0.090 +/- 0.170 Fe-59 0.007 +/- 0.037

-0.007 +/- 0.062 0.0 00 +/- 0.052

-0.056 +/- 0.076 Co-58

-0.015 +/- 0.018 0.001 +/- 0.020

-0.011 +/- 0.025 0.007 +/- 0.021 I-131

-0.016 + 0.065

-0.048 + 0.094

-0.001 +/- 0.081 0.130 +/- 0.110 Co-60

-0.011 +/- 0.013 0.005 + 0.022

-0.012 +/- 0.026 0.022 +/- 0.021 K-40 0.014 + 0.038 0.000 +/- 0.048

-0.034 +/- 0.045

-0.061 +/- 0.068 Cr-51 0.040 +/- 0.150

-0.160 +/- 0.210 0.060 +/- 0.210

-0.160 +/- 0.200 Mn-54 0.023 +/- 0.030 0.012 +/- 0.037 0.C08 +/- 0.032

-0.(119+/- 0.045 Cs-134

-0.l14 +/- 0.018

-0.003 +/- 0.016 0.024 + 0.030

-0.009 +/- 0.0 19 Nb-95 Cs-137 03/15105 06/09/05 09/26/05 12/19/05 03/15/05 06/09/05 09/26/05 12/19/05

-0.018 +/- 0.022 0.039 +/- 0.059

-0.004 +/- 0.042

-0.025 +/- 0.034 Ru-103

-0.003 +/- 0:015 0.020+/- 0.021 0.017 +/- 0.025 0.017 +/- 0.021 Ag-lOim 0.038 +/- 0.049 0.002 +/- 0.051 0.005 +/- 0.057 0.033 +/- 0.043 Ru-106 0.040 +/- 0.170 0.000 i 0.200 0.130 +/- 0.230 0.030 +/- 0.200 Be-7

-0.004 +/- 0.030

-0.042 +/- 0.062 0.002 + 0.033 0.000 +/- 0.068 Sb-125 0.014 +/- 0.038

-0.013 +/- 0.044

-0.054 +/- 0.062 0.008 + 0.044 Co-58 1.310 +/- 0.450 1.670 +/- 0.450 2.020 4 0.510 1.600 +/- 0.400 Th-228 0.025 + 0.087 0.007 i 0.062

-0.011 +/- 0.098 0.097 +/- 0.078 Co-60 0.014 +/- 0.018

-0.005 +/- 0.019 0.000 +/- 0.024 0.009 +/- 0.019 Zn-65 0.000 i 0.044 0.000 +/- 0.047

-0.052 +/- 0.064

-0.016 +/- 0.040 Cr-51 O.016+/- 0.018 0.024 +/- 0.028 0.025 +/- 0.031 0.02 +/- 0.025 Zr-95

-0.004 i 0.026

-0.(110 +/- 0.028 0.015 +/- 0.041

-0.031 +/- 0.032 Cs-134 34-X 03/11/D5 -0.003 +/- 0.018 06/07/05 0.015 +/- 0.031 09/19/05 -0.014 +/- 0.025 12/19/D5 -0.026 i 0.045 Cs-137 03/11/D5 0.008 +/- 0.014 06/07/05 -0.007 +/- 0.024 09/19/35 0.000+/- 0.017 12/19/05 0.010 +/- 0.026 0.030 +/- 0.130 0.070 +/- 0.160

-0.100+/- 0.150 0.150 +/- 0.200 Fe-59 0.030 +/- 0.040

-0.058 +/- 0.058 0.015 +/- 0.054 0.010 +/- 0.077 0.012 + 0.017

-0.008 +/- 0.018 0.006+/- 0.013

-0.018 +/- 0.029 1-131 0.035 +/- 0.035 0.000 +/- 0.050

-0.041 +/- 0.057

-0.024 +/- 0.082 0.003 +/- 0.016

-0.010 +/- 0.027

-0.011 +/- 0.019

-0.005 +/- 0.029 K-40 1.620 +/- 0.380 1.830 +/- 0.570 1.650 +/- 0.530 1.420 +/- 0.630

-0.060 +/- 0.140

-0.140 +/-0.210

-0.020 +/- 0.140 0.230 +/- 0.270 Mn-54 0.008 +/- 0.013

-0.005 +/- 0.024

-0.001 +/- 0.019 0.000 +/- 0.026 0.013 +/- 0.015 0.000 +/- 0.024

-O.C03 +/- 0.011 0.017 +/- 0.024 Nb-95 0.003 +/- 0.019 0.006 +/- 0.025 0.002 +/- 0.024 0.008 +/- 0.032

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 19, Oysters (pCilg wet)

Page 2 of 3 Location Collection Isotope Date 34-X Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/11/05 -0.005 +/- 0.018

-0.050 1 0.160 0.017 4 0.037 0.032 4 0.062

-0.016 4 0.036

-0.002 +/- 0.026 06/07/05 0.001 + 0.024 0.040 +/- 0.220

-0.046 +/- 0.045 0.028 +/- 0.078

-0.009 +/- 0.064

-0.019 + 0.044 09/19/05 -0.012 +/- 0.018

-0.050 +/- 0.140

-0.031 +/- 0.046

-0.009 +/- 0.068 0.011 +/- 0.046 0.000 +/- 0.031 12/19/05 -0.016 +/- 0.033

-0.130 +/- 0.240

-0.046 +/- 0.063

-0.051 +/- 0.098

-0.018 +/- 0.058 0.020 +/- 0.055 36 Ag-lOrm Be-7 Co-58 Co-60 Cr-Si Cs-134 03/14/05 -0.006 + 0.018 0.060 + 0.120 0.008 +/- 0.013 0.004 + 0.014

-0.030 + 0.130

-0.009 + 0.013 06/14/05 0.005 + 0.017

-0.120 + 0.140

-0.005 +/- 0.019 0.020 + 0.017 0.000 + 0.120

-0.001 + 0.019 09/19/05 0.007 I 0.031

-0.020 4 0.190 0.009 : 0.024 0.016 +/- 0.023 0.180 +/- 0.210 0.001 +/- 0.022 12/19/05 -0.010 +/- 0.030 0.070 +/- 0.190

-0.009 +/- 0.031 0.000 +/- 0.028 0.030+/- 0.200

-0.027 + 0.026 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/14/05 0.004 +/- 0.014

-0.011 +/- 0.039

-0.012 +/- 0.025 1.610 +/- 0.360 0.004 +/- 0.013 0.010 +/- 0.014 06/14/05 0.007 +/- 0.017 0.009 + 0.058

-0.002 +/- 0.026 1.400 +/- 0.440

-0.001 +/- 0.018 0.000 +/- 0.016 09/19/05 0.011 + 0.024

-0.069 + 0.078 0.023 +/- 0.084 1.240 +/- 0.520 0.004 +/- 0.017 0.009 +/- 0.026 12/19/05 0.015 + 0.024 0.037 +/- 0.064

-0.012 +/- 0.066 1.660 +/- 0.670 0.013 +/- 0.029 0.017 +/- 0.033 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/14/05 0.016 + 0.013

-0.110 + 0.130

-0.001 +/- 0.036

-0.016 +/- 0.049

-0.019 + 0.032 0.013 +/- 0.025 06/14/05 0.008 +/- 0.013

-0.070 +/- 0.120 0.021 + 0.032 0.014 + 0.068

-0.020 +/- 0.044 0.010 +/- 0.029 09/19/05 -0.006 + 0.020

-0.040 +/- 0.210

-0.029 + 0.050 0.045 + 0.096 0.006 +/- 0.042 0.025 +/- 0.036 12/19/05 0.000 +/- 0.017

-0.030 + 0.200 0.048 +/- 0.048

-0.046 + 0.067

-0.051 +/- 0.072 0.022 +/- 0.042 37-C Ag-llOm Be-7 Co-58 Co-60 Cr-51 Cs-134 03/14/05 0.003 + 0.027 0.110 + 0.150

-0.009 t 0.014

-0.016 + 0.027

-0.070 + 0.150 0.008 +/- 0.023 06114/05 0.021 4 0.024

-0.120+/- 0.120

-0.007 + 0.018

-0.009+/- 0.022

-0.020+/- 0.150 0.000 +/- 0.016 09/19/05 -0.013 +/- 0.024

-0.100 +/- 0.140 0.013 +/- 0.021 0.002 +/- 0.017

-0.070 +/- 0.200 0.003 +/- 0.019 12/19/05 -0.005 + 0.027

-0.100 +/- 0.240 0.003 +/- 0.027

-0.010 +/- 0.033

-0.220 +/- 0.280 0.007 +/- 0.026 Cs-137 Fe-59 1-131 K-40 Mn-54 Ngi-95 03/14/05 0.002 +/- 0.024

-0.005 +/- 0.057 0.027 +/- 0.036 1.A90 4 0.500

-0.004 t 0.017

-0.003 + 0.021 06/14/05 0.003 +/- 0.018 0.002 +/- 0.059 0.015 4 0.035 1.880 + 0.520 0.010 +/- 0.015

-0.006 + 0.019 09/19/05 0.001 +/- 0.017

-0.027 +/- 0.055

-0.021 +/- 0.063 1.960 +/- 0.480 0.005 +/- 0.020

-0.004 +/- 0.021 12/19/05 -0.015 +/- 0.029 0.019+/- 0.062 0.000 + 0.082 1.780 +/- 0.750 0.000 +/- 0.024

-0.044 +/- 0.030 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/14/05 -0.005 + 0.019

-0.100 +/- 0.160 0.025 +/- 0.047 0.085 +/- 0.091 0.023 +/- 0.051 0.016 +/- 0.035 06/14/D5 0.000 + 0.016 0.060 + 0.160

-0.011 +/- 0.042 0.014 + 0.077

-0.026 + 0.050 0.038 + 0.031 09/19/05 0.010 + 0.024

-0.040 + 0.160

-0.007 + 0.045

-0.052 + 0.065

-0.020 + 0.034 0.018 + 0.030 12/19/05 0.006 +/- 0.030

-0.140 +/- 0.280 0.013 +/- 0.041 0.150+/- 0.120

-0.027 +/- 0.065

-0.017 +/- 0.052 40-X Ag-1Orm Be-7 Co-58 Co-60 Cr-51 Cs-134 03/30/D5 0.052 +/- 0.029 0.130+/- 0.210

-0.022 +/- 0.034 0.016 +/- 0.019

-0.040 +/- 0.250 0.02+/- 0.023 06/16/05 0.089 +/- 0.033 0.020+/- 0.210 0.002 +/- 0.031

-0.017 4 0.037

-0.030 +/- 0.170

-0.019 +/- 0.033 09/07/05 0.123 +/- 0.028 0.100 +/- 0.190 0.002 +/- 0.028 0.013 +/- 0.025

-0.030 +/- 0.240

-0.002 +/- 0.026 12/13/05 0.081 +/- 0.031

-0.120 + 0.190

-0.002 +/- 0.019

-0.006 +/- 0.028

-0.100+/- 0.180 0.000+/- 0.021

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 19, Oysters (pCi/g wet)

Page 3 of 3 Location Colleclion Date Isotope 40-X Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/30/05 0.003 + 0.037 0.040 4 0.120

-0.018 + 0.064 1.290 4 0.620 0.006 +/- 0.022 0.034 +/- 0.035 06/16/05 0.028 + 0.082

-0.040 + 0.078

-0.037 +/- 0.031 1.190 i 0.580 0.015 +/- 0.026 0.011 +/- 0.037 09/07/05 -0.055 + 0.068 0.023 +/- 0.071

-0.010 +/- 0.083 2.030 + 0.530 0.007 +/- 0.023 0.052 + 0.038 12/13/05 -0.015 +/- 0.077 0.018 +/- 0.044

-0.016 +/- 0.037 1.730 4 0.570

-0.002 +/- 0.020 0.0 16 + 0.027 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/30/05 -0.010 +/-0.022 0.0304 0.220 0.007+ 0.065 0.078 4 0.091 0.005 +/-0.043

-0.C13 +/- 0.046 06/16/05 -0.004 +/- 0.025 0.020 +/- 0.190

-0.013 +/- 0.069

-0.030 + 0.110

-0.007 +/- 0.064 0.007 +/- 0.042 09/07/05 0.005 +/- 0.027 0.140 +/- 0.220

-0.022 +/- 0.055 0.019 + 0.083

-0.043 +/- 0.056

-O.C04 +/- 0.047 12/13/05 -0.008 + 0.026 0.090 +/- 0.240 0.005 +/- 0.056 0.018 + 0.097

-0.025 +/- 0.056

-O.C02 +/- 0.039

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 20, Clams (pCi/g wet)

Page I of 2 Location Colleclon Isotope Date 29 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 02/17/05 -0.009 +/- 0.019 0.010 +/- 0.120 0.003 +/- 0.016 0.007 +/- 0.018 0.040 +/- 0.120 0.011 +/- 0.013 06/01/05 -0.004 +/- 0.030

-0.080 +/- 0.160 0.000 +/- 0.021

-0.012 +/- 0.022

-0.020 +/- 0.200 0.0)3 +/- 0.024 09/07/05 0.000 +/- 0.024 0.240 +/- 0.190

-0.006 +/- 0.023 0.016 +/- 0.030

-0.070 +/- 0.270

-0.015 +/- 0.021 10/31/05 0.004 +/- 0.021 0.070 +/- 0.130

-0.007 +/- 0.017 0.004 +/- 0.016 0.070 +/- 0.110 0.034 +/- 0.017 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 02/17/05 0.004 +/- 0.015

-0.012 +/- 0.050

-0.017 +/- 0.058 1.990 +/- 0.410

-0.004 +/- 0.015

-0.005 +/- 0.022 06/01/05 -0.010 +/- 0.022

-0.011 +/- 0.076 0.000 +/- 0.029 1.390 +/- 0.660

-0.009 + 0.023

-0.012 +/- 0.024 09/07/05 -0.010 +/- 0.026

-0.009 +/- 0.089

-0.013 +/- 0.078 1.980 +/- 0.620 0.003 +/- 0.021

-0.019 +/- 0.027 10/31/05 -0.004 +/- 0.014 0.000 +/- 0.033

-0.016 +/- 0.022 1.990 +/- 0.480 0.001 +/- 0.014 O.OD8 + 0.015 Ru-103 Ru-106 Sb-l25 Thi-228 Zn-65 Zr-95 02/17/05 -0.003 +/- 0.017

-0.050 +/- 0.110

-0.004 +/- 0.032

-0.045 +/- 0.052

-0.011 +/- 0.035 0.0)2 +/- 0.029 06/01/05 0.002 +/- 0.021

-0.120 +/- 0.240

-0.037 +/- 0.054 0.059 + 0.075 0.000 +/- 0.063 0.015 +/- 0.047 09/07/05 0.008 +/- 0.030 0.010 +/- 0.230

-0.016 +/- 0.057 0.044 +/- 0.084

-0.051 +/- 0.060

-0.026 +/- 0.037 10/31/05 0.002 +/- 0.015 0.000 +/- 0.140

-0.005 +/- 0.035 0.000 +/- 0.063 0.000 +/- 0.037

-0.010 +/- 0.026 35-X Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 03/30105 -0.009 +/- 0.043 0.310 +/- 0.230 0.004 +/- 0.026

-0.003 +/- 0.038

-0.030 +/- 0.260 0.008 +/- 0.033 06/07/D5 0.007 +/- 0.026 0.050 +/- 0.170

-0.012 +/- 0.027

-0.003 +/- 0.032 0.050 +/- 0.210 0.0)7 +/- 0.020 09/07/05 0.005 +/- 0.026

-0.010 + 0.170

-0.006 +/- 0.018 0.003 +/- 0.024

-0.080 +/- 0.180 0.000 +/- 0.019 10/31/05 -0.005 +/- 0.023 0.010 +/- 0.150 0.004 +/- 0.016 0.006 +/- 0.023

-0.010 +/- 0.140 0.019 +/- 0.020 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/30/05 -0.014 +/- 0.033

-0.010 +/- 0.110

-0.047 +/- 0.080 2.390 +/- 0.940 0.007 +/- 0.030 0.0)4 +/- 0.029 06/07/05 -0.010 +/- 0.024

-0.049 +/- 0.057

-0.013 +/- 0.051 1.720 +/- 0.650

-0.012 +/- 0.031

-0.003 +/- 0.041 09/07/)5 0.003 + 0.017 0.013 +/- 0.057

-0.005 + 0.070 2.200 +/- 0.500 0.007 + 0.019 0.0)6 +/- 0.029 10/31/05 0.003 + 0.017

-0.008 +/- 0.041 0.012 +/- 0.032 2.060 +/- 0.500 0.006+/- 0.018

-0.003 +/- 0.015 Ru-103 Ru-I06 Sb-125 Th-228 Zn-65 Zr-95 03/30/05 -0.014 +/- 0:027

-0.040 +/- 0.260

-0.027 +/- 0.075

-0.022 +/- 0.052

-0.005 +/- 0.037 0.021 I 0.073 06/07/')5 0.022 +/- 0.024

-0.140 +/- 0.180 0.007 +/- 0.054 0.004 +/- 0.082

-0.055 +/- 0.058

-0.027 +/- 0.048 09/07/)5 -0.010 +/- 0.025

-0.030 +/- 0.160

-0.028 +/- 0.046

-0.009 +/- 0.077

-0.002 +/- 0.045 0.0)0 i 0.038 10/31/)5 -0.005+/-0.016

-0.040+/- 0.200 0.009+/- 0.041

-0.012 +/- 0.072 0.017+/- 0.040

-0.003 +/-0.030 38 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 03/30/0)5 0.005 +/- 0.039 0.050 +/- 0.260

-0.011 0.027

-0.003 +/- 0.033 0.020 +/- 0.270

-0.004 +/- 0.027 06/07/05 0.006+/- 0.022

-0.020+/- 0.130 0.001 +/- 0.018

-0.008 + 0.021

-0.070+/- 0.130 0.0)2 i 0.016 09/07/05 -0.019 +/- 0.024

-0.050 +/- 0.200

-0.020 +/- 0.021 0.002 +/- 0.019

-0.050 +/- 0.210 0.004 i 0.019 10/31/)5 -0.025 +/- 0.033 0.150 +/- 0.180

-0.014 +/- 0.022

-0.004 +/- 0.034 0.020 +/- 0.180 0.012 +/- 0.023 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/30/1)5 0.012 +/- 0.032 0.011 +/- 0.067

-0.017 +/- 0.077 1.670 +/- 0.700

-0.017 +/- 0.025 0.017i 0.029 06/07/1)5 -0.005 +/- 0.018

-0.001 +/- 0.066 0.018 +/- 0.035 1.780 +/- 0.480 0.014 +/- 0.018

-0.0)1 +/- 0.024 09/07/05 0.014 +/- 0.021 0.007 +/- 0.055 0.044 +/- 0.064 2.180 4 0.520

-0.008 +/- 0.018

-O.OD1 i 0.025 10/31/ 05 0.011 +/- 0.023 0.007 +/- 0.038

-0.054 + 0.046 2.360 +/- 0.740

-0.013 +/- 0.021

-0.011 +/- 0.023

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Ope ating Report 2005 Table 20, Clams (pCi/g wet)

Page 2 of 2 Location Colledion Date Isotope 38 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 39-X 03/30/05 0.003 +/- 0.024 06/07/05 0.003 +/- 0.018 09/07/05 -0.001 + 0.021 10/31/05 -0.032 4 0.024 Ag-110m 02/17/05 -0.008 +/- 0.019 06/28/05 0.003 +/- 0.011 09/27/D5 0.000 +/- 0.027 11/28/35 -0.039 +/- 0.030 Cs-137

-0.220 i 0.260 0.030 + 0.130 0.010 I

0.160 0.040 + 0.180 Be-7

-0.100 +/- 0.120

-0.031 +/- 0.072

-0.060 +/- 0.150

-0.160 +/- 0.210 Fe-59

-0.027 +/- 0.072 0.007 + 0.035

-0.004 A 0.047

-0.005 +/- 0.057 Co-58

-0.001 +/- 0.014

-0.006 +/- 0.008

-0.002 4 0.020

-0.023 +/- 0.023 1-131

-0.060 +/- 0.100 0.040 +/- 0.059 0.032 + 0.076 0.040 + 0.100 Co-60 0.006 + 0.017

-0.001 1 0.008 0.010 +/- 0.030 0.028 +/- 0.025 K-40

-0.018 +/- 0.055

-0.045 1 0.046

-0.046 +/- 0.045

-0.022 4 0.048 Cr-51

-0.050 +/- 0.150 0.007 + 0.086

-0.060 +/- 0.160

-0.080 +/- 0.250 Mn-54 0.033 + 0.057 0.003 +/- 0.028 0.003 + 0.031

-O.C22 +/- 0.041 Cs-134

-O.C01 + 0.014

-0.005 +/- 0.008 0.009 +/- 0.023 0.015 + 0.024 Nb-95 02/17/)5 -0.005 +/- 0.016 06/28/)5 0.000 +/- 0.008 09/271)5 -0.005 +/- 0.025 11/28/05 -0.020 + 0.028 Ru-103 02/17/05 -0.005 +/- 0.016 06/28/05 0.005 A 0.009 09/271)5 0.004 +/- 0.017 11/28/')5 -0.031 +/- 0.026 0.004 4 0.049

-0.001 +/- 0.024 0.003 +/- 0.062 0.017 +/- 0.055 Ru-106

-0.200 + 0.140

-0.041 +/- 0.076

-0.010 + 0.190

-0.110 +/- 0.200 0.051 +/- 0.068 0.008 +/- 0.027 0.006 +/- 0.024

-0.021 +/- 0.073 Sb-125 0.020 +/- 0.032

-0.015 +/- 0.021 0.038 + 0.052 0.024 + 0.062 1.750 +/- 0.410 2.110 1 0.230 2.290 +/- 0.680 2.040 +/- 0.570 Th-228

-0.015 +/- 0.055

-0.005 +/- 0.030

-0.021 +/- 0.085

-0.020 A 0.092 0.0051+0.015

-0.002:+ 0.007

-0.020 + 0.022 0.023 +/- 0.025 Zn-65

-0.014 +/- 0.030

-0.015 +/- 0.019

-0.0191: 0.052 0.050: 10.110 0.002 + 0.019

-0.0051 +/-0.0 10

-0.011 +/- 0.024 0.016+/- 0.032 Zr-95

-0.030 +/- 0.033

-0.007 I 0.014

-0.058 + 0.035 0.0D3 + 0.038

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 Table 22, Lobsters (pCi/g wet)

Page l of 2 Location Collection Isotope Date 32 Ag-lOrm Be-7 Co-58 Co-60 Cr-Sl Cs-134 02/22i05 -0.007 +/- 0.023

-0.110 +/- 0.220

-0.015 + 0.024

-0.017 I 0.022

-0.110 + 0.210 0.013 + 0.025 05/04105 -0.017 + 0.028

-0.040 +/- 0.140 0.006 + 0.018 0.009 4 0.022

-0.070 + 0.160 0.022 + 0.022 09/06/05 0.040 +/- 0.035 0.040 +/- 0.190

-0.010 +/- 0.022 0.010 + 0.027 0.260 +/- 0.240

-0.009 +/- 0.024 10/24/05 -0.010 + 0.021

-0.060 + 0.130

-0.008 +/- 0.015

-0.006 +/- 0.020 0.060 + 0.210 0.004 +/- 0.017 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 02/22/05 -0.004 +/- 0.022 0.013 +/- 0.083

-0.007 +/- 0.075 1.350 +/- 0.550 0.000 +/- 0.026 0.004 + 0.032 05/04/05 0.008 +/- 0.020

-0.035 +/- 0.055 0.004 +/- 0.026 2.160 +/- 0.550

-0.018 +/- 0.021

-0.009 +/- 0.016 09/06/05 -0.012 +/- 0.025 0.046 +/- 0.077 0.034 +/- 0.092 2.510 +/- 0.710

-0.017 t 0.023 0.001 + 0.026 10/24/05 -0.004 +/- 0.021

-0.011 +/- 0.047

-0.020 +/- 0.059 2.620 +/- 0.550 0.009 +/- 0.020

-0.018 +/- 0.022 Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 02/22/05 0.022 +/- 0.027

-0.070 +/- 0.230

-0.015 +/- 0.057 0.060 +/- 0.090

-0.026 +/- 0.048

-0.022 + 0.052 05/04/05 0.014 + 0.017

-0.130 0.230 0.008 + 0.049 0.030+/- 0.085

-0.005 +/- 0.040

-0.007 +/- 0.032 09/06/05 0.000+/- 0.025

-0.100+/- 0.250 0.024 +/- 0.061

-0.020 +/- 0.110

-0.063 +/- 0.050

-0.017+/- 0.039 10/24/05 0.017 +/- 0.021

-0.070 0.180

-0.040 +/- 0.053 0.026 +/- 0.077

-0.006+/- 0.042 0.007 +/- 0.036 35 Ag-lOrm Be-7 Co-58 Co-60 Cr-51 Cs-134 03/04/05 0.000 +/- 0.024

-0.060 +/- 0.140

-0.005 4 0.017 0.007 +/- 0.018 0.040 +/- 0.170

-0.002 +/- 0.016 05/04/05 -0.012 4 0.023

-0.140 +/- 0.110 0.022 +/- 0.018 0.009 +/- 0.021

-0.030 +/- 0.120 0.005 +/- 0.017 09/06/05 -0.010 +/- 0.034 0.000 +/- 0.210

-0.021 +/- 0.028

-0.022 +/- 0.029

-0.160 +/- 0.210

-0.017 +/- 0.027 10/24/05 -0.007 +/- 0.025

-0.010 +/- 0.170

-0.002 +/- 0.016

-0.010 +/- 0.022 0.020 +/- 0.190 0.011 +/- 0.023 Cs-137 Fe-59 I-131 K-40 Mn-54 Nb-95 03/04/05 0.001 +/- 0.017

-0.040 +/- 0.054 0.017 4 0.043 1.750 +/- 0.470 0.010 +/- 0.015 0.015 +/- 0.019 05/04/05 0.004 +/- 0.023 0.005 +/- 0.045 0.004 +/- 0.019 2.230 +/- 0.620 0.002 +/- 0.018 0.009 + 0.020 09/06/05 -0.008 +/- 0.023

-0.010 +/- 0.100 0.037 +/- 0.072 2.630 +/- 0.740 0.020 +/- 0.025

-0.007 +/- 0.039 10/24/05 -0.001 +/- 0.019

-0.009 +/- 0.031 0.070 +/- 0.056 2.680 +/- 0.570

-0.008 +/- 0.021

-0.019 +/- 0.021 Ru-103 Ru-106 Sb-12S Th-228 Zn-65 Zr-95 03/04/05 -0.001 0.017

-0.040 +/- 0.170 0.021 +/- 0.039 0.096 +/- 0.073 0.004 +/- 0.032 0.017 P'0.030 05/04/05 0.000 4 0.018

-0.120 +/- 0.150 0.013 +/- 0.042

-0.027 + 0.062 0.006 +/- 0.048 0.017 +/- 0.028 09/06/05 -0.008 +/- 0.023

-0.040 +/- 0.160

-0.050+ 0.061 0.076+/- 0.097

-0.064+/- 0.055

-0.021 +/- 0.054 10/24/05 0.005 +/- 0.018

-0.050 + 0.190

-0.016 +/- 0.040

-0.007 +/- 0.071 0.025 +/- 0.042

-0.003 +/- 0.032 37-X Ag-lOrm Be-7 Co-58 Co-60 Cr-Si Cs-134 03/18/D5 0.001 +/- 0.013 0.090 +/- 0.110

-0.010 +/- 0.013

-0.006 +/- 0.012 0.060 +/- 0.160 0.0)1 + 0.011 05/24/05 -0.035 + 0.035

-0.060 0.200

-0.009 +/- 0.025 0.011 +/- 0.031 0.230 +/- 0.230

-0.009 + 0.026 09/14/05 0.007+/- 0.024 0.140 +/- 0.160 0.000 + 0.018 0.008 + 0.020

-0.060+/- 0.160

-0.013 +/- 0.020 11/08/05 0.011 +/- 0.021 0.030 +/- 0.140 0.001 +/- 0.011

-0.007 +/- 0.020

-0.150 +/- 0.150 0.0)2 +/- 0.019 Cs-137 Fe-59 1-131 K-40 Mn-54 Nb-95 03/18/05 -0.001 +/- 0.010

-0.037 +/- 0.036

-0.070 +/- 0.110 1.910 +/- 0.310 0.003 +/- 0.010 0.01)6 +/- 0.020 05/24/D5 -0.013 +/- 0.024 0.021 +/- 0.062 0.005 +/- 0.063 3.130 +/- 0.830

-0.010 +/- 0.025 0.0)9 +/- 0.024 09/14/D5 0.012 +/- 0.017 0.024 +/- 0.044 0.014 +/- 0.056 2.270 +/- 0.500

-0.003 + 0.016

-O.OD7 +/- 0.020 11/08/D5 -0.008 +/- 0.020

-0.024 +/- 0.033

-0.006 + 0.029 2.220 + 0.510

-0.002 +/- 0.016 0.0)4 +/- 0.019

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Table 22, Lobsters (pCi/g wet)

Page 2 of 2 Location Collection Date Isotope 37-X Ru-103 Ru-106 Sb-125 Th-228 Zn-65 Zr-95 03/18.'05 -0.005 +/- 0.015 05/24'05 -0.003 +/- 0.024 09/14,'05 -0.004 4 0.020 11/08,'05 0.008 +/- 0.018

-0.001 + 0.094

-0.140 + 0.220

-0.090 £ 0.170 0.070 i 0.150

-0.014 a 0.025 0.050 + 0.058 0.003 +/- 0.044 0.003 i 0.044

-0.005 +/- 0.041 0.066 +/- 0.095 0.018 +/- 0.066

-0.013 +/- 0.069

-0.019 +/- 0.025

-0.023 +/- 0.051

-0.004 +/- 0.044

-0.048 +/- 0.034

-0.0)08 +/- 0.025 0.012 +/- 0.043 0.009 +/- 0.032 0.004 +/- 0.024

Dominion Nuclear Connecticut, Inc.

Mil [stone Station Annual Radiological Environmental Operating Report 2005 NOTES FOR DATA TABLES Collection Dates for Air Particulates and Iodines are listed as Monday -Sunday, however the typical change-out days are on Tuesdays A

Low volume - only 41 hours4.74537e-4 days 0.0114 hours 6.779101e-5 weeks 1.56005e-5 months of sample collection caused by GFI failure (see CR-05-06122)

B Low volume - only 11 hours1.273148e-4 days 0.00306 hours 1.818783e-5 weeks 4.1855e-6 months of sample collection caused by GFI failure (see CR-05-08203)

C Low volume (5941 cubic feet) caused by GFI trip (CR 10386)

D Low volume (6634 cubic feet) caused by GFI trip (CR 11192)

E Low volume (9216 cubic feet) caused power outage (CR 14088)

F Non pasture grass sample (e.g., hay or other feed)

G Not collected in April (locations 1, 10 & 17) since no sample available during that time H

First Quarter flounder samples (locations 32 & 35) were not available (18 trawls made without any fish six inches or larger being obtained)

I First Quarter fish-other sample (location 35) was not available (18 trawls made without any fish six inches or larger being obtained)

J First Quarter mussel sample (location 28) was not available (inter-tidal and sub-tidal SCUBA surveys on two separate occasions found no live mussels for this location)

K Unable to obtain water at location 77X (decrease in rainfall lowered water table)

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005

4.

DISCUSSION OF RESULTS This section summarizes the results of the analyses on the REMP (Radiological Environmental Monitoring Program) samples.

DNC has carefully examined the data throughout the year and has presented in this section all cases where station related radioactivity could be detected. The results are compared 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 calendar 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 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 measurement locations were incorporated into the REMP requirements listed in the REMODCM (Radiological Effluent Monitoring and Offsite Dose Calculation Manual).

Three more locations were added in mid-2003 to prepare for monitoring the potential effect of ISFSI (Independent.

Spent Fuel Storage Installation - Dry Cask Storage).

Two Dry Cask Containers were loaded in the first quarter 2005. The exposure rate measurements at these three locations remains unchanged from the background measurements listed in the last two annual reports (9.5}

uR/hour at location 93X, 7.6 uR/hour at location 74X and 6.9 uR/hour at location 75X).

Table 1 lists the exposure rate measurements for all 44 monitored locations.

Trends similar to those of past years are apparent. These measurements demonstrate the general variations in background.

radiation between the various on-site and off-site locations and include 4-1

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 200',

gamma exposure from all sources of radioactivity.

For example, the Weather Shack (location 02), MP3 Discharge (location 05), Environmenta].

Laboratory (location 08), Corey Road (location 48), Jordan Cove Road (location 63) and Site Switchyard Fence (location 73) experience higher exposure rates due to their proximity to granite beds and stonewalls. In addition, the Ledyard control location (location 14C) experiences relatively higher background exposure rate 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, shows interesting site changes and site characteristics.

For example, the average of all indicator locations for the period when Unit 1 was still in operation (through 1995) display the effects of N-16 BWR turbine building sky-shine to immediate areas onsite. As discussed in previous annual reports, the effects of sky-shine at onsite monitoring stations were increases as high as 6 uR/hr at certain onsite locations. Sky-shine decreased rapidly with distance and was indistinguishable from normal background measurements at even the nearest 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 yeer 2000. The difference in response between the two systems is very apparent, with the new Panasonic TLDs reading 15% to 20% lower. This lower response is consistent for all locations, including both indicator and control locations.

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. As discussed earlier, the exposure measurements of many indicator locations onsite are influenced by natural background exposure differences caused by the many granite out-croppings typical of the Millstone area. As shown in Figure 4.1-1, the annual average at indicator locations 1 and 3 are slightly higher in gamma exposure rate than the average control gamma exposure rate. This difference is the result of the nearby granite. Review of Table 1 data also indicates that the annual average at location 4 (near the site boundary) is also higher than the controls. If the difference at location 4 was the result of plant operation (e.g., storage of radioactive waste on-site, gaseous effluents, etc.) an assessment of the resulting dose consequence, assuming 4-2

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 constant year-round residency, is shown in Section 5 as not exceeding 3.3 mrem.

Review of the individual quarterly data for all locations indicates that at locations 5 and 8, there seems to be an effect caused by storage of the Unit 2 replaced reactor head. Beginning in the second quarter, the dose rate in these areas increased by more than the typical variability for this type of measurement.

This increase was consistent for the three quarters after the head was placed in a nearby area. The largest increase was at location 5, which is closer to the replaced reactor head storage area than location 8. Based upon the data, the increase in dose rate is approximately 1 uR/hour. This would equate to a dose of 6.6 mrem (for these three quarters). These locations are onsite; dose rates at the site boundary would be significantly less. Although the dose rate should decrease with time, the exposure next year should be approximately the same since it will be for a full year. These resulting site boundary doses are bounded by dose rates from other radwaste storage areas and are discussed in Section 5.

The fourth quarter result for location 13C (one of the control locations) shows an unusual increase. Preliminary investigation indicates that the location of this TLD was not moved. The field technician noted that there were workers in the area during the fourth quarter change-out. The first quarter 2006 data for this location is less than the fourth quarter 2005 data, but it is also higher than normal. It appears the workers may have somehow caused the higher than normal reading for these quarters (e.g.,

a pile of stone was noted near the area).

Depending on the second quarter 2006 results, there may be further investigation.

Figure 4.1-1 MILLSTONE TLDs Historical Annual Gamma Exposure Rate uR/hr 10 II.

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Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 4.2.

Air Particulate Gross Beta Radioactivity (Table 2)

Air is continuously sampled at seven inner ring (0 to 2 miles) locations and one control location (14 miles) and by passing it through glass fiber particulate filters. These samples 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 control 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 air particulate monitoring 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 2005 charcoal samples.

Figure 4.2-1 MILLSTONE AIR PARTICULATE 2005 Gross Beta Radioactivity pCi/m3 U.U30 0.03 0.025 0.02 l+indicator]

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Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Figure 4.2-2 MILLSTONE AIR PARTICULATE 5 Year Historical Gross Beta Radioactivity pC/M3 0.035 Tr 0.03 0.025 0.02 0.015 0.01 t

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Air Particulate Gamma (Table 4A-D)

The air particulate samples that are utilized for the weekly gross beta analyses are composited quarterly and analyzed for gamma emnitting isotopes. The results, as shown in Tables 4A - 4D3, indicate the presence of naturally occunring Be-7, which is produced by cosmic radiation. No other positive results are seen.

These analyses indicate the lack of station effects.

4.5.

Air Particulate Strontium (Table 5)

Prior to 1989 Table 5 was used for listing the data for measurements of Sr-89 and Sr-90 in quarterly composite air particulate ifilters. Because this previous data indicated the lack of any detectable station related activity, the requirement for these measurements was removed from the REMP.

Analyses have been discontinued.

Since milk samples are a much more sensitive indicator of fission product existence in the environment, these analyses have been discontinued.

In the event of widespread station related contamination or other unusual events (such as the 1986 Chemnobyl incident), these measurements could be made.

Historically, when world events created conditions that caused detectable measurements of these nuclides, there was no difference noted between indicator and control locations.

This further confirms that any of the detectable levels for these nuclides were not plant related.

4-5 co5-

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 4.(;.

Soil (Table 6)

Millstone resumed collection of soil as a required media type in 2001.

Prior to 2001, it had not been sampled for over fifteen years. These samples were discontinued due to the fact that, previous sample results netter indicated any station related detectable activity. Similarly, since 20D1, no station detectable activity has been seen in these samples. The results of these samples, allows for the determination of baseline activity levels in soil. This is particularly important for Cs-137, since significant levels from past weapons testing fallout remain in the soil.

Baseline levels should be useful in the future, when site characterization and decommissioning of the station become the focus during preparations for License termination. This media is collected annually from one control and two indicator locations.

4.7.

Cow Milk (Table 7)

Typically, the most sensitive indicator of fission product existence in the terrestrial environment is radiological analysis of milk samples. Since milk Is a widely consumed food, it is usually one of the most critical exposure pathways.

Since 1996 all dairy (cow) farms close enough to Millstone to be considered an indicator location (i.e. within 10 miles) have ceased operation.

Therefore, the sampling of cow milk has been discontinued until such time dairy activities resume.

Each year the 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 2005 census can be seen in Appendix A. If a new dairy farm is identified close enough to Millstone tco be considered an indicator location, the collection of cow milk will resume.

4.81.

Goat Milk (Table 8)

When available, these samples are collected twice per month during grazing season and once per month during the rest of the year. Each sample is analyzed for I-131 and gamma emitting nuclides. Although not required by the REMODCM, samples from each location are composited quarterly and analyzed for Strontium.

Goat milk samples are typically a more sensitive indicator of fission.

products in the terrestrial environment than cow milk samples. It should.

be noted that the uptake of radionuclides in milk is dependent on a number of parameters.

These include: metabolism of these animals, 4-6

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 feeding habits, farming practices and feed type.

Similar to previous years, Cs-137 and Sr-90 are observed in goat milk. During past weapons testing periods, samples taken at certain milk locations indicated higher uptake of fallout 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, located at 5.2 Mi. NNE of Millstone (previous location 22, sampled from 1994 through 2004),

exhibited a trend of showing higher Sr-90 and Cs-137 concentrations than at some of the other locations (including ones closer to Millstone).

The station and regulatory authorities have carefully reviewed past and present data.

The presence of the Sr-90 and Cs-137 is the result of residual radioactivity deposited into the environment from the fallout of past nuclear weapons testing. The facts that lead to this conclusion are presented in Section 6.0. These facts include: effluent release totals for these isotopes show insufficient quantities to account for such measurements; Sr-89 and Cs-134 which are chemically similar and generally released in comparable quantities were not detected, and a trend since the early 1960's that shows a consistent declining presence of Cs-137 and Sr-90 in milk from Connecticut.

The 2005 results indicate no detectable 1-131 in this media. In fact, for over 16 years, no plant related detectable levels of 1-131 have been seen in goat milk samples. The only other occasions where I-131 was detected were fallout episodes from the Chinese Weapons Tests of the mid to late 1970's and Chernobyl.

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 Is not available (see 4.9. Pasture Grass and Feed).

4.95.

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 often prohibits sampling of pasture grass.

Feed (e.g., hay) is typically sampled whenever pasture grass is not available.

No station effects are noted in these samples. Cosmic produced Be-7 was observed in the majority of the pasture grass samples and many of the hay samples. Due to its relatively short half-life (52 days), it was not detected in the several of the "older" hay samples. Naturally occurring K-40 was a factor of two times higher in hay (compared to pasture grass).

Similar to goat milk, the Cs-137 values at the indicator and control locations are comparable. This provides an indication that the levels observed are the result of residual weapons testing fallout.

4-7

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Repor:

Millstone Station 200' 4.10 O. Well Water (Table 10)

These samples were discontinued in 1985, because no detectable station activity was ever observed in these samples.

However, based upon lessons learned at other nuclear plants, including several undergoing; decommissioning, sampling was resumed at several locations starting in the fourth quarter 2003. Three additional locations were added in 2005 to monitor potential leakage from ISFSI. Consistent with the past data, there still has not been any station activity detected in any of these well water samples.

4.11. Reservoir Water (Table 1)

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.

4.12. 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.

Most samples had detectable levels of cosmic produced Be-7, at levels consistent with previous years.

Positive indications of Cs-137 were observed in two samples. These levels are comparable to those observed in past years and is due to fallout.

This media can be an early and sensitive indicator of releases from the station for 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 this media twice a year.

4-8

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Repori Millstone Station 200' 4.14. Seawater (Table 14)

In the vicinity of discharge (location 32), seawater is normally sampled by using a continuous sampler. A technician collects an amount from this sampler on a weekly frequency and composites it for monthly analyses.

In September 1999, Millstone increased the required analysis frequency for composite samples from the vicinity of discharge to a monthly basis to increase monitoring effectiveness. For the Control Location, Giants Neck (location 37C), six weekly grab samples are obtained for quarterly coinpositing. In 2003, the LLD for H-3 (tritium) at the indicator location (32) was lowered by approximately a factor of four to further enhance monitoring effectiveness. This lower LLD was continued through 2006.

Naturally occurring K-40 was seen all but two of the samples. Measured plant related levels of H-3 inseawater from the immediate vicinity of discharge (location 32) were observed in 11 of the 12 samples.

This 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.

Thtium builds up in the reactor coolant during each fuel cycle. It is generated during plant operation from fission and neutron reactions.

Between 1992 and 2002, H-3 was typically observed at levels below detectable. Since that time, because sensitivity has been enhanced, H-3 levels are now typically detectable. Figure 4.14-1 shows a thirteen-year trend of H-3 releases in the Millstone liquid effluents versus the 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. A.

review of previous years' trends indicated that lowering the LLD for H-3 for location 32 would make an enhancement to the monitoring program.

The lower LLD enables a direct comparison of effluent monitoring to environmental monitoring for this exposure pathway.

Figure 4.14-2 shows this comparison.

This comparison is also more accurate than Figure 4.1-1 since it takes into account the dilution flow during each month. This flow can change substantially during plant outages.

By plotting the data monthly, the resolution of the comparison is also enhanced, although there can be slight discrepancies due to the REMP sample not necessarily being on the last day of each month.

4-9

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Figure 4.14-1 MILLSTONE LIQUID H-3 RELEASE VERSUS SEAWATER CONCENTRATION 1700 13 Year Historical Trend 1600 -

1500 Curies 1400 pCi/liter 1300 -

1200 -

1100 1000 gooohTt 900 800 -

l t

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 4-10 CO( &

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 4.15. Bottom Sediment (Table 15)

Cs. 137 was detected in the samples from Golden Spur (67X). This is typical for this location, since it is a fresh water area. The levels of Cs-137 at this location are comparable to those observed in past river water sediments taken from other areas of the Connecticut River.

Because of the relative distance and direction of the Golden Spur location from the station and comparable levels seen at even much farther locations, the Cs-137 detected at Golden Spur is from weapons testing fallout.

Cs-137 was also detected in the samples from West Jordan Cove (29) and in the extra samples from Jordon Cove Bar (39X). The levels at Jordan Cove Bar are similar to those at Golden Spur and likely exhibit the effect of the fresh water drainage from Jordan Brook.

The levels at West Jordan Cove were significantly less.

Although these levels may be the result of fallout, the samples from Jordan Cove Bar also indicated detectable quantities of Co-60.

These levels are considered plant related activity.

Similar levels were noted last year and somewhat lower levels in 2003. Prior to 2003, plant related activity has not been detected in bottom sediment for over a decade.

The present levels are comparable to the levels observed in 1990.

Bottom sediment is not a significant dose pathway to man, especially at areas not typically used by the public.

Examinations of other aquatic media, including seafood, sampled from these locations (discussions that follow) do not show any detectable Co-60 or Cs-137. A new location was added near the closest public beach (location 69X).

The data for this location did not indicate any plant related activity.

4.16. Aquatic Flora (Table 16)

Although sampling of this media is not required, it provides useful information since it a veiy sensitive indicator of station discharges. Low levels of activity (e.g., Mn-54, Co-58, Co-60, Zn-65, 1-131 and Ag-i lOnm) have been detected in the past.

However, since 2000 levels have decreased to undetectable for all nuclides except for 1-131. One positive measurement was noted last year and several positive measurements are evident this year. There has typically been a decrease in liquid releases from the station, which has caused most of nuclides to become undetectable.

However, seaweed has a significant bioaccumulation factor which makes it an extremely sensitive indicator of iodine in the environment.

Investigation of the positive measurement from the September 14, 2005 sample (CR-05-10353) indicates that the 1-131 activity was likely caused by low levels in recent releases.

Follow-up additional sampling taken on November 7, 2005 prior to a Unit 2 liquid 4-11

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 discharge and on November 8, 2005 after a Unit 2 liquid discharge seems to confirm the effect from a liquid discharge. These levels are quite low and are often hidden within the counting statistics. There was no I-131 detected in any of the other aquatic samples. This confirms the dose consequence for these levels is insignificant.

Section 5 provides EL complete discussion of the potential dose consequences.

No other station related radioactivity was detected in aquatic flora in 2005.

4.j! 7. Fish (Tables 1 7A and 1 7B) 4.1.7.1.

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 nuclides.

4.1.7.2.

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 nuclides, including samples taken from within the quarry.

4.i!8. Mussels (Table 18)

Similar to the last several years, this sampling media showed no station related radioactivity at all locations.

4.1i9. Oysters (Table 19)

All locations, except for the quarry, utilize oysters stocked in trays. These oysters have been obtained from location 68Z for the last several years.

To enhance the program, the oysters from location 68Z have also been analyzed. Trays are kept at most 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 only two of the four samples from within the station discharge area (locations 32) and all four samples from the Quarry (40X). Although location 32 is labeled as the vicinity of discharge, it has actually been located at the end of the quarry until this year where it is now in the middle of the quarry. Due to safety concerns, the location was moved to a more accessible area.

No station related activity was observed in samples from beyond the station discharge area..

For several previous years, high levels of Zn-65 were observed in oysters..

This was caused by their high capacity for accumulating zinc. Studies 4-12

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 200!;

have shown that oysters can accumulate as much as 50 times or more:

the amount of zinc compared to most other seafood (Wolfe, 1979).

A remarkable correlation existed between the Zn-65 concentration measured in the native quarry oysters and the amount of Zn-6=i discharged into the environment.

However, since the permanent-shutdown of Millstone Unit 1 in 1996, the amount of Zn-65 in liquid effluents has decreased to being undetectable in the 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 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 lOnm concentration in quarry oysters compared to the liquid effluents discharged.

Again, the correlation between Ag-11 Om 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-li Om when compared to environmental measured concentrations has provided a basis for Millstone to adjust the bioaccumulation factors for Zn.-65 and Ag-ilOm used in the standard industry effluent dose consequence codes.

Section 5 shows a comparison of the two dose methods. (i.e., dose from the station's measured radioactive discharges input into conservative models versus 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.

nol. available for public use, the actual concentration of the nuclides 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 2005.

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 4-13

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Repor:

Millstone Station 200';

available for public consumption.

No scallop samples have been.

available for several years.

4.22. Lobsters (Table 22)

Like the last several years, no station related radioactivity was detected in this sample media in 2005.

4-14

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Figure 4.19-1 Zn-65 COMPARISON Curies Discharged vs. Native Oyster Conc.

Curies 0.1 0.01 -

0.001 _

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Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005

5.

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

The first method utilizes calculations of direct dose from sources onsite and the station's 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 = 0.14 mrem GI(LLI) = 0.010 mrem The organ GI(LLI) dose is essentially all attributable to the liquid pathway.

The majority of the whole body dose is due to a conservative determination of dose (~0.12 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 attributable from station effluents includes conservative assessments using Method 2.

5-1

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005 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 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.

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Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 TABLE 5.1 COMPARISON OF DOSE CALCULATION METHODS MILLSTONE POWER STATION 2005 Annual Dose (millirem)

Method 1 (1)

Method 2 ()

Pathway Individual Organ Unit 1 Unit 2 Unit 3 Station Station (BWR)

(PWR)

Total Airborne Effluents

1. External Gamma Dose Max( 2)

Whole Body 0.0000 0.00157 0.00048 0.0021 ND(3)

(gamma air) (8)

2. Whole Body Dose Max( 2)

Whole Body 0.00073 0.0044 0.0149 0.020 ND (internal and external)

Direct Dose Nearest Residence Max(2)

Whole Body N/A N/A N/A

-0.12(0)

<3.3(5) 5-3

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 TABLE 5.1 (Cont.)

COMPARISON OF DOSE CALCULATION METHODS MILLSTONE POWER STATION 2005 Annual Dose (millirem)

Max Method 1 ()

Method 2 '

Pathway Individual Organ Unit 1 Unit 2 Unit 3 Station Station (BWR)

(PWR)

Total Liquid Effluents

1. Fish

Adult Wlhole Body 0.000000 0.000220 0.000780 0.00100 ND(3)

Teen 0.000000 0.000178 0.000693 0.00087 Child 0.000000 0.000161 0.000721 0.00088

Adult GI(LLI)( 6) 0.000000 0.001325 0.002833 0.0042 ND Teen 0.000000 0.000941 0.002094 0.0030 Child 0.000000 0.000383 0.000946 0.0013 Adult Liver 0.000000 0.000342 0.001676 0.0020 ND

Teen it 0.000000 0.000323 0.001655 0.0020 Child 0.000000 0.000292 0.001561 0.0019

2. Shellfish

Adult Whole Body 0.000000 0.000135 0.000631 0.00077 0.000013(7)

Teen 0.000000 0.000129 0.000636 0.00077 0.000013 Child i

0.000000 0.000149 0.000796 0.00095 0.000014

Adult GI(LLI) 0.000000 0.003470 0.002466 0.0059 0.0087(7)

Teen 0.000000 0.002401 0.001835 0.0042 0.0059 Child 0.000000 0.000876 0.000765 0.0016 0.0021 Adult Liver 0.000000 0.000305 0.002011 0.0023 0.000021(7)

Teen 0.000000 0.000314 0.002117 0.0024 0.000021 Child 0.000000 0.000308 0.002134 0.0024 0.000018 5-4

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operatirg Report Mitlstone Station 200!;

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 storage and movement:

of radioactive waste. Storage of radioactive waste is allowed in several areas onsite.

Operation of the storage facilities is limited by design to ensure that the maximum direct dose at the site boundary from each area does not exceed one millirem.

Actual exposure 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 sky-shine. These maximum estimated doses from each facility were summed for a cumulative site commitment:

of approximately 0.12 millirem. The whole body dose from airborne effluents was 0.020 and from liquid effluents was 0.0021. This results in a total estimated whole body dose to the maximum individual of 0.14 mrem (0.12 + 0.020 + 0.00214).

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 ar 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 TLE, 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 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. Based on measured levels in 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.

8. Based upon the conservatively assuming no correction for building shielding and occupancy.

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Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Millstone Station 2005

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 issue because this product is widely consumed and several fission products readily concentrate in this media. Some of these fission products, such as 1-131 and Sr-89 are relatively short-lived. Therefore they can result from either station effluents, nuclear weapons tests or nuclear incidents (e.g. Chernobyl). Sr-89's lifetime is longer than 1-131's, therefore it will remain around for much longer periods of time. The even longer-lived fission products, Sr-90 and Cs-137, cause more of a concern. These isotopes are still remaining from the weapons testing era of the 1960's. This results in measurable amounts of Sr-90 and Cs-137 appearing in some milk samples. Distinguishing between this 'background" of fallou:t activity and station effects is of prime interest for a Radiological Environmental Monitoring Program.

In reviewing the historical and present Sr-90 and Cs-137 measured in cow and goat railk 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 plants to yield the measured concentrations in milk.

(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 ever been detected in milk samples.

(3) Sinilar 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 6-1

Dominbn Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Rport Millstone Station 2005 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 fromn 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 years and has presented in this report all cases where station related radioactivity could be detected. An analysis of the potential exposure to the maximum 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.

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Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 Figure 6-1 Strontium-90 in Milk pa/liter 25, 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 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 MP2 Start-up occurred:

December, 1975 MP1 Start-up occurred:

October 26, 1970 MP3 Start-up occurred:

January 23,1986 6-3 Co%

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 APPENDIX A LAND USE CENSUS FOR 2005 A-1

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report X2005 TABLE A-1 Dairy Cows Within 20 miles of Millstone Point-2005 Direction N

N NNE NNE NNE NNE NNE NNE NE NE NE NE ENE ENE WNW NW Distance 14 Miles 20 Miles 16 Miles 16 Miles 16.5 Miles 17 Miles 18 Miles 19 Miles 13.5 Miles 18 Miles 18 Miles 19 Miles 17.3 Miles 20 Miles 10.5 Miles 10.4 Miles Location Preston Norwich Preston Norwich Preston Preston Preston Preston Ledyard Preston North Stonington North Stonington North Stonington North Stonington Lyme Lyme

of Cows 60 220 65 25 50 140 46 50 50 65 52 280 320 80 9**

Note: No cow farns on this list are usedfor sampling, allfarms are greater than ten milesfromn plant.

unknown

- sheep A-2

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 TABLE A-2 Dairy Goats Within 20 miles of Millstone Point-2005 Direction N

N NE ENE ENE ENE WW NV]qJW NW NN;W NNJW NNW NNW Distance 2.4 Miles 20 Miles 2.7 Miles 2 Miles 13 Miles 16.2 Miles 5.1 Miles 18 Miles 17.3 Miles 12.3 Miles 18 Miles 20.8 Miles 29 Miles Sample Location Waterford (LOCATION 21)

North Franklin Waterford (LOCATION 22)

Waterford Stonington North Stonington Niantic Haddam East Haddam Salem Colchester Colchester Hebron (LOCATION 24)

of Goats 7/5*

2/2 4/0 1/0 5/2 15/12 7/3 3/2 12/6 37/20 6/2 70/26 Number of Goats/Number of Milkers Unable To Contact As Of This Time A-3

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 TABLE A-3 2005 Resident/Garden Survey0 Downwind Direction N

NNE NE ENE E

ESE SE SSE S

SSW SW WSW W

WNW NW NNW Distance to Closest Resident (meters) 1500 860 790 1590 1500 1690 3700 3190 2870 2470 770 740 Distance to Closest Garden (meters) 1490 870 800 1580 1500 1990 3840 3180 2950 2780 2180 1020

N/A - not applicable (over water sectors) 0 Distances were measured in 2003 using GPS.

A-4

Dom inion Nuclear Connecticut, Inc.

Mill:;tone Station Annual Radiological Environmental Operating Report 2005 APPENDIX B DNC OA PROGRAM B-1

Donminion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Mill.;tone Station 2005 INTRODUCTION Dominion Nuclear Connecticut (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 and quality control samples. This independent program is applicable to all Dominion nuclear facilities because they share a joint contract with Framatome ANP DE&S Environmental Laboratory.

DA'C QA PROGRAM The DNC independent QA Program includes spikes of various sample media and duplicate samples. 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 Millstone Nuclear Power Station Health Physics Operations Procedure REMP 1.4, "Quality Control of Radiological Environmental Monitoring Program." An investigation is conducted on any result or trend that does not satisfy acceptance criteria.

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

1. Contractor lab's internal QA program. In addition to the Millstone quality control samples, the radioanalysis contractor has its 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 intercomparisort 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) 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.

B-2

Doninion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Report Mili.;tonc Station 2005 RESULTS OF MILLSTONE 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 may be used. If the two sigma error range of the analyzed result includes the known spike value the result passes.

The Millstone QA Program indicated that the contractor lab's environmental radiological analysis program was adequate in 2006. Results are shown on Table 2.

All of the TLD spike tests satisfied procedural criteria.

Of 91 Individual nuclide analysis results on QA samples, 85 passed the acceptance criteria, a 93% success rate. Of the 6 failures, 5 were high by 20 - 330/c, and one was low by 25%. This is an improvement over last year when a problem was noted with the low range pipette used for the spiking the samples.

Procedures were revised during the second half of 2005 to minimize the errors associated with pipette use. Since that time the results have improved to am acceptance rate similar to previous years.

B-3

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 TABLE 1 2005 QUALITY CONTROL SAMPLES SAMPLE TYPE

.OCSAMP LES Note i)

ROUTE SAMLES TLD Spike 16 (Note 2) 160 Milk - Strontium 1

12 Milk - Iodine 5

-30 Milk - Gamma (Note 3) 0

-30 Pasture Grass/Hay - Gamma (Milk Substitute)

-30 Vlater - Gamma 10 28 water - Tritium 4

28 Fish/Invertebrate - Gamma 4

80 Vegetation/Aquatic Flora/Sediment/Soil - Gamma 0

81 Air Particulate Gross Beta Iodine Gamma 5

4 4

416 416 32 FOOTNOTE (Table 1):

1. All samples are spikes except fish/invertebrate which are duplicate oyster samples. Also includes January 2006 spikes since the December 2005 spikes were delayed.

2. A set of four TLDs are spike quarterly for readout during the routine quarterly readout.

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

TABLE 2 RESULTS OF 2005 QUALITY CONTROL SAMPLE ANALYSES

1. -

I-.,-

11 - 1~ ~~~~~~~~~~.

- - ~ -.

- II SAMPLE TYPE

- ANALYSES PASSED ANALYSES FAILED 12 0

TLD Spike Milk - Strontium Milk - Iodine I

0 5

0 Water - Gamma 46 (Note 1) 4 Water - Tritium 2 (Note 1, Note 2) 0 0

Oysters - Gamma Air Particulate 4

Gross Beta Iodine Ganmma 5

3 17 0

1 3

TOTALS TLDs: 12 Individual Nuclides: 85 TLDs: 0 Individual Nuclid s: 6 FOOTNOTE (Table 2):

1. To provide a more detailed comparison of pass versus failure, each nuclide was considered for the gammna and strontium analyses.

2. Does not include 2 failures caused by plateout of the stock solution (Ag-110m) and 4 caused by the use of corntaminated acid (CR-05-09630). These failures are QC spiking issues and not indicative of any laboratory performance issues.

B-4

Dominior. Nuclcar Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 APPENDIX C

SUMMARY

OF INTERLABORATORY COMPARISONS C-1

Dominion Nuclear Connecticut, Inc.

Annual Radiological Environmental Operating Rcport Millstone Station 2005 INTRODUCTION This appendix covers the Intercomparison Program of the Framatome ANP Environmental Laboratory as required by technical specifications for each Millstone unit. 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:

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

quarter, r rilk for Sr-89 and Sr-90 analyses during the 1st and 3rd quarters, 9 water for gamma (10 nuclides) and low-level (LL) Iodine-131 analyses during the 1st and 3rd quarters,

> water for Sr-89 and Sr-90 analyses during the 4th quarter,

> water tritium analysis during the 2nd and 4th quarters, 9 air filter for gamma (9 nuclides) analyses during the 2nd quarter, and

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

In addition to the Analytics Intercomparison Program, Framatome also participates in other intercomparsion programs which include radionuclides and media similar to those required by the Millstone program. These programs are the National Institute of Standards and Technology (NIS'f 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 which does not pass the criteria is investigated by FRAMATOME.

Analytics Intercomparison Program results are included on pages C-3 through C-6 for 2005. A total of 113 analysis results were obtained with 113 passing criteria, a 100% success rate.

C-2

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS RADIOLOGICAL ENVIRONMENTAL CROSS-CHECK PERFORMANCE EVALUATION

'Ratio Sample Quarter/ Sample Reported Known E-LAB/

Number Year Media Nuclide Value Value Analytics Evalual:ion E4459-162 1 st2005 Water Gross Alpha 39.9 40.8 0.98 Agreement E4459-162 1stV2005 Water Gross Beta 279 292 0.96 Agreement E4460-162 1 st2005 Water 1-131 LL 66.2 65.9 1.00 Agreement E4460-162 1 st2005 Water 1-131 69.3 65.9 1.05 Agreement E4460-162 1 st2005 Water Ce-I 41 219 221 0.99 Agreem ent E4460-162 1 stV2005 Water Cr-51 346 322 1.07 Agreem ant E4460-162 1 stV2005 Water Cs-I 34 130 134 0.97 Agreem snt E4460-162 1 stV2005 Water Cs-I 37 127 125 1.01 Agreem ant E446I-1 62 1 st/2005 Water Co-58 108 ill 0.97 Agreem ent E4460-1 62 1 stV2005 Water Mn-54 160 154 1.04 Agreement E4460-1 62 1 stV2005 Water Fe-59 114 107 1.07 Agreement E4460-1 62 1 sV12005 Water Zn-65 192 191 1.01 Agreement E4460-1 62 1 stV2005 Water Co-60 138 139 1.00 Agreement E4461 -162 1 sV12005 Water Sr-89 94.6 103 0.92 Agreement E4461 -162 1 sV12005 Water Sr-90 15.6 17.2 0.90 Agreement E4462-162 1stV2005 Filter Gross Alpha 20.8 21.9 0.95 Agreement E4462-162 1 stV2005 Filter Gross Beta 162 157 1.04 Agreement E4463-162 1 st2005 Milk 1-131 LL 91.2 92.3 0.99 Agreement E4463-162 1 sf12005 Milk 1-131 95.9 92.3 1.04 Agreement E4463-162 1 sV12005 Milk Ce-I 41 229 229 1.00 Agreement E4463-162 1 stV2005 Milk Cr-51 334 334 1.00 Agreement E4463-162 1 stV2005 Milk Cs-I 34 137 139 0.99 Agreement E4463-162 1 stV2005 Milk Cs-I 37 133 130 1.03 Agreement E4463-162 1 stV2005 Milk Co-58 118 115 1.02 Agreement E4463-162 1 sV2005 Milk Mn-54 166 160 1.04 Agreement E4463-162 1 sV12005 Milk Fe-59 117 ill 1.05 Agreement E4463-162 1 st2005 Milk Zn-65 203 198 1.03 Agreement E4463-162 1 sV2005 Milk Co-60 145 144 1.01 Agreement E4464-162 1 sV2005 Milk Sr-89 93.8 107 0.88 Agreement E4464-162 1 st2005 Milk Sr-90 16.1 17.9 0.90 Agreement C-3

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM PERFORMANCE EVALUATION

-Ratio Sample Quarter/ Sample Reported Known E-LABI Number Year Media Nuclide Value Value Analytics Evalualtion E4599-162 2nd/2005 Water H-3 9060 9100 1.00 Agreement E4600-162 2nd/2005 Filter Gross Alpha 31.9 30.9 1.03 Agreement E4600-162 2nd/2005 Filter Gross Beta 125 127 0.99 Agreement E4601 -162 2nd/2005 Filter Ce-141 59.3 58.9 1.01 Agreement E460', -162 2nd/2005 Filter Cr-51 207 193 1.07 Agreement E4601 -162 2nd/2005 Filter Cs-1 34 59.1 60.6 0.98 Agreement E4601-162 2nd/2005 Filter Cs-137 131 120 1.09 Agreement E4601 -162 2nd/2005 Filter Co-58 3.55 3.4 1.04 Agreem ent E4601-162 2nd/2005 Filter Mn-54 88.6 79.7 1.11 Agreem ant E4601 -162 2nd/2005 Filter Fe-59 40.1 40.7 0.99 Agreem ant E4601-162 2nd/2005 Filter Zn-65 112 98.8 1.13 Agreem ant E4601-162 2nd/2005 Filter Co-60 89.4 92.3 0.97 A reem ant E4602-1 62 2nd/2005 Filter Sr-89 90.5 97.5 0.93 Agreement E4602-162 2nd/2005 Filter Sr-90 13.0 12.6 1.03 Agreement E4603-162 2nd/2005 Milk 1-131 LL 85.7 86.9 0.99 Agreement E4603-162 2nd/2005 Milk 1-131 86.8 86.9 1.00 Agreement E4603-162 2nd/2005 Milk Ce-141 96.3 92.4 1.04 Agreement E4603-162 2nd/2005 Milk Cr-51 295 303 0.98 Agreement E4603-162 2nd/2005 Milk Cs-1 34 87.7 95 0.92 Agreement E4603-162 2nd/2005 Milk Cs-1 37 186 189 0.98 Agreement E4603-162 2nd/2005 Milk Co-58 5.83 5.30 1.10 Agreement E4603-162 2nd/2005 Milk Mn-54 124 125 0.99 Agreement E4603-162 2nd/2005 Milk Fe-59 67 63.9 1.05 Agreement E4603-162 2nd/2005 Milk Zn-65 149 155 0.96 Agreement E4603-162 2nd/2005 Milk Co-60 138 145 0.96 Agreement C4

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS RADIOLOGICAL ENVIRONMENTAL CROSS-CHECK PERFORMANCE EVALUATION Ratio Saniple Quarter/ Sample Reported Known E-LAB/

Number Year Media Nuclide Value Value Analytics Evaluation E4685-162 3rd/2005 Water Gross Alpha 42.3 41.6 1.02 Agreernent E4685-162 3rd/2005 Water Gross Beta 128.5 123 1.05 Agreerment E4687-162 3rd/2005 Water 1-131 LL 78.3 78.2 1.00 Agreerr ent E4687-162 3rd/2005 Water 1-131 77.2 78.2 0.99 Agreement E468'7-162 3rd/2005 Water Ce-1 41 276.4 282 0.98 Agreement E4687-162 3rd/2005 Water Cr-51 353.7 408 0.87 Agreement E4687-162 3rd/2005 Water Cs-1 34 137.3 148 0.93 Agreement E4687-162 3rd/2005 Water Cs-137 231.1 235 0.98 Agreement E4687-162 3rd/2005 Water Co-58 72.5 77.0 0.94 Agreement E4687 -1 62 3rd/2005 Water Mn-54 113.2 111 1.02 Agreement E4687-162 3rd/2005 Water Fe-59 74.7 74.0 1.01 Agreement E4687-1 62 3rd/2005 Water Zn-65 152.3 149 1.02 Agreement E4687-1 62 3rd/2005 Water Co-60 192.1 202 0.95 Agreement E4688-162 3rd/2005 Charcoal 1-131 61.0 62.7 0.97 Agreement E4689-1 62 3rd/2005 Filter Gross Alpha 39.3 38.0 1.04 Agreement E4689-1 62 3rd/2005 Filter Gross Beta 120.8 112 1.08 Agreement E4690-162 3rd/2005 Milk 1-131 LL 99.0 94.3 1.05 Agreement E4690-162 3rd/2005 Milk 1-131 90.0 94.3 0.95 Agreement E469(1-162 3rd/2005 Milk Ce-141 228.5 233 0.98 Agreem ent E4690-162 3rd/2005 Milk Cr-51 306.3 338 0.91 Agreement E4690-162 3rd/2005 Milk Cs-1 34 118.3 122 0.97 Agreem ent E4690-162 3rd/2005 Milk Cs-137 196.5 195 1.01 Agreem snt E4690-1 62 3rd/2005 Milk Co-58 64.0 63.4 1.01 Agreement E4690-1 62 3rd/2005 Milk Mn-54 94.7 92.0 1.03 Agreement E4690-1 62 3rd/2005 Milk Fe-59 63.3 61.0 1.04 Agreement E469C-162 3rd/2005 Milk Zn-65 121.7 123 0.99 Agreement E4690-162 3rd/2005 Milk Co-60 165.2 167 0.99 Agreement E4691-162 3rd/2005 Milk Sr-89 139.6 146 0.96 Agreement E4691-162 3rd/2005 Milk Sr-90 10.8 11.5 0.94 Agreement C-5

Dominion Nuclear Connecticut, Inc.

Millstone Station Annual Radiological Environmental Operating Report 2005 AREVA NP ENVIRONMENTAL LABORATORY ANALYTICS ENVIRONMENTAL CROSS CHECK PROGRAM PERFORMANCE EVALUATION Ratio Sample Quarter/ Sample Reported Known E-LAB/

Number Year Media Nuclide Value Value Analytics Evaluatiion E4836-162 4th/2005 Water H-3 13700 13200 1.04 Agreement E4837-162 4th/2005 Water Sr-89 80.3 91.4 0.88 Agreement E4837-162 4th/2005 Water Sr-90 7.18 7.40 0.97 Agreement E4838-162 4thl2005 Filter Gross Alpha 22.3 25.0 0.89 Agreement E4838 -162 4th/2005 Filter Gross Beta 146 136 1.08 Agreement E4839-162 4th/2005 Filter Ce-141 122 131 0.93 Agreement E4839 -162 4thl2005 Filter Cr-51 113 113 1.00 Agreement E4839-162 4th/2005 Filter Cs-134 48.0 51.0 0.94 Agreement E4839 162 4th/2005 Filter Cs-1 37 111 ill 1.01 Agreement E4839 -162 4th/2005 Filter Co-58 44.2 45.2 0.98 Agreement E4839 -162 4th/2005 Filter Mn-54 93.5 88.9 1.05 Agreement E4839-162 4th/2005 Filter Fe-59 44.6 48.1 0.93 Agreement E4839 -162 4th/2005 Filter Zn-65 95.8 89.9 1.07 Agreement E4839-162 4th/2005 Filter Co-60 59.1 64.6 0.91 Agreement E4840-162 4th/2005 Filter Sr-89 103 121 0.86 Agreement E4840 -162 4th/2005 Filter Sr-90 9.05 9.70 0.93 Agreement E4841 -162 4th/2005 Milk 1-131 LL 72.4 74.6 0.97 Agreement E4841-162 4th/2005 Milk 1-131 74.1 74.6 0.99 Agreement E4841--162 4th/2005 Milk Ce-I 41 217 224 0.97 Agreement E4841--162 4th/2005 Milk Cr-51 190 193 0.99 Agreement E4841 --162 4th/2005 Milk Cs-I 34 86.4 87.3 0.99 Agreeme!nt E4841 --162 4th/2005 Milk Cs-1 37 187 189 0.99 Agreemelnt E4841 *-162 4th/2005 Milk Co-58 78.7 77.5 1.02 Agreement E4841 -162 4th/2005 Milk Mn-54 153 152 1.01 Agreeme!nt E4841 -162 4th/2005 Milk Fe-59 87.8 82.4 1.07 Agreement E4841-162 4th/2005 Milk Zn-65 148 154 0.96 Agreeme nt E4841 *162 4th/2005 Milk Co-60 106 ill 0.95 Agreemelnt E48791 62 4th/2005 Charcoal 1-131 68.4 72.0 0.95 Agreeme nt C-6

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