Text

2005 Annual Radiological Environmental Operating Report
	ML061210428
Person / Time
Site:	Seabrook
Issue date:	04/21/2006
From:	St.Pierre G; Florida Power & Light Energy Seabrook
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	FOIA/PA-2010-0209, SBK-L-06097
	Download: ML061210428 (239)
	v • d • e

FPL Energy Seabrook Station FPL Energy P.O. Box 300 Seabrook, NH 03874 Seabrook. Station (603) 773-7000 April 21, 2006 Docket No. 50-443 SBK-L-06097 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001 Seabrook Station 2005 Annual Radiological Environmental Operating Report Pursuant to the requirements of 10CFR 50.36a(a)(2) and Seabrook Station Technical Specification 6.8.1.3, FPL Energy Seabrook, LLC submits the 2005 Annual Radiological Environmental Operating Report. The report summarizes the implementation of the FPL Energy Seabrook, LLC Radiological Environmental Monitoring Program (REMP). Attachment 1 to the report is the complete data set for the REMP samples.

A copy of this report is also being provided to the Commonwealth of Massachusetts, Department of Public Health and the State of New Hampshire, Bureau of Radiological Health.

Should you require further information regarding this matter, please contact Mr. Ron Thuriow, Acting Health Physics Department Manager, at (603) 773-7438.

Very truly yours, FPL Energy Seabrook, LLC Gene F. St. Pierre Site Vice President 6W9z an FPL Group company

U. S. Nuclear Regulatory Commission SBK-L-06097/ Page 2 cc: wilh enclosure S.J. Collins, NRC Region I Administrator E. Miller, NRC Project Manager, Project Directorate I-2 G. T. Dentel, NRC Senior Resident Inspector NH DHHS Office of Community & Public Health Bureau of Radiological Health 29 Hazen Drive Concord, NH 03301-6527 Massachusetts Department of Public Health Radiation Control Program 90 Washington Street Dorchester, MA 02121

FPL Energy L Seabrook Station L

2005 Annual L Radiological Environmental f ,Operating Report April 2006

SEABROOK STATION ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT For the Period January - December 2005 April 2006 FPL Energy Seabrook Station Health Physics Department Seabrook Station And Framatome ANP Nuclear & Radiation Engineering Marlborough, Massachusetts 01752 Prepared By: Date: / Y120ao 6 David Perkins - FPL Energy Seabrook Station Approved By:

/' I--Z/ Z 41/<ZE:ZN.-

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, Date:

11411y Ronald Thurlow - CHP, FPL Energy Seabrook Station

L L

l SEABROOK STATION L ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT For the Period U January - December 2005 U April 2006 Prepared By:

FPL Energy Seabrook Station Health Physics Department Seabrook Station And Framatome ANP Nuclear & Radiation Engineering Marlborough, Massachusetts 01752 ii

TABLE OF CONTENTS EXECUTVE SUMARYY.IV1 LIST OF TABLES.VI LIST OF FIGURES.VII 1.0 ITRODUCTION ............................................... 1 2.0 ENVIRONMENTAL MONITORING PROGRAM2 ............................................... VI 3.0

SUMMARY

OF RADIOLOGICAL ENVIRONMENTAL DATA ....................... ........................ 13 3.1 AIR PARTICULATE ............................................... 14 3.2 CHARCOAL FILTERS ............................................... 22 3.3 MILK ........................ 24,-

3.4 SURFACE WATER ............................................... 31 3.5 GROUND WATER ............................................... 34 3.6 SEDIMENT ............................................... 39 3.7 FISH.42 !

3.8 LOBSTERS............... 45 3.9 SHELLFISH ............... 48 3.1 IRISH MOSS.5.............. 81 3.11 FOODCROP ............... 55 3.12 VEGETATON .............. 58 3.13 DIRECTRADIATION .............. 61 4.0 PROGRAM DEVIATIONS AND REPORTING .......................................... 82 L 4.1 SAMPLING PROGRAM DEVIATIONS .......................................... 82 4.2 COMPARISON OF ACHIEVED LLDS WITH REOUIREMENTS .......................................... 82 1 4.3 COMPARISON OF RESULTS AGAINST REPORTING LEVELS .......................................... 86 L 5.0 QUALITY ASSURANCE PROGRAM .......................................... 86 5.1 INTRALABORATORY QUALITY CONTROL PROGRAM .......................................... 86 L 5.2 THIRD PARTY CROSS CHECK PROGRAM .......................................... 86 5.3 5.4 BLIND DUPLICATE PROGRAM ..........................................

ENVIRONMENTAL TLD QUALITY ASSURANCE PROGRAM ..........................................

87 87 L 6.0 LAND USE CENSUS.96 ATTACHMENT 1: SAMPLE ANALYSIS DATA LIST FOR 2005 . .86 U L

iii - 1 LI

Executive Summary The Radiological Environmental Monitoring Program (REMP) for Seabrook Station operated successfully for the period of January through December 2005. This report describes the REMP and its implementation as required by Technical Specifications and defined in the Offsite Dose Calculation Manual (ODCM). It also contains analytical results, data evaluation, dose assessment, and data trends.

for e ach environmental sample media. Also included are the results of the Land Use Census, historical data, and the Framatome Environmental Laboratory performance in the Quality Assurance Intercomparison Program required by the ODCM.

Radioactivity levels in the vicinity of Seabrook Station from January 1 through December 31, 2005 in air, water, sediment, milk, fish, food crops, vegetation and direct radiation measurement have been analyzed, evaluated, and summarized. The results of the REMP are intended to supplement the results of the radiological effluent monitoring by verifying that the measurable concentration of radioactive materials and levels of radiation are not higher than expected on the basis of the effluent measurement and modeling of the environmental exposure pathways.

Radiation and radioactivity in the environment is monitored within a 10-mile radius of the site. Two types of samples are taken. The first type, control samples, are collected from areas that are beyond measurable influence of Seabrook Station. These samples are used as reference data. Normal background radiation levels, or radiation present due to causes other than Seabrook Station, can thus be compared to the environment surrounding the nuclear power station. Indicator samples are the second sample type obtained. These samples show how much radiation or radioactivity is contributed to the environment by the site. Indicator samples are taken from areas close to the station where any plant contribution will be at the highest concentration. In 2005, approximately 743 samples were taken from nearly 82 different locations around Seabrook Station that include the aquatic, atmospheric, and terrestrial environments. More than 1350 ODCM required analyses were performed on these samples.

The environmental program for 2005 is outlined in Table 2.1.

Prior to station operation, samples were collected and analyzed to determine the amount of radioactivity present in the area. The resulting values are used as a 'pre-operational baseline.' Current analysis results from the indicator samples are compared to both current control sample values and the pre-operational baseline to determine if changes in radioactivity levels are attributable to station operations.

A report is required to be submitted to the Nuclear Regulatory Commission when the level of radioactivity in an environmental sampling medium exceeds the limits specified in the Offsite Dose Calculation Manual (ODCM) when averaged over any calendar quarter. Also, when more than one of the radionuclides are detected in the sampling medium, this report shall be submitted if:

Con entration (1) + Concentration (2) + ... 2 1.0 Limit Level (1) Limit Level (2)

Based on the analytical results of environmental samples during 2005, Seabrook Station reporting levels were not exceeded.

Radioactivity detected was attributable to naturally occurring radionuclides, previous nuclear weapons tests and other man-made sources.

In 21)05, the maximum whole body dose to the hypothetically exposed individual was 0.0311 millirem.

This whole body dose is the sum of all the exposure pathways for liquid and gaseous effluents, plus the direct whole body dose from station operations. This total represents approximately 0.12% of the whole body dose limits for a member of the public as set forth in 40CFR190.

iv

The average person in the United States receives about 360 mrem/yr (0.36 remlyr) from natural background and man-made radiation sources (NCRPM. Report No. 93. 'Ionizing Radiation Exposure of the Population of the United States" (1987)). This estimate for natural background was revised from about 100 to 300 mrem because of the inclusion of radon gas which has always been present but was not previously included in the calculations. In some regions of the country, the amount of natural radiation is significantly higher. Residents of Colorado, for example, receive an additional 60 mremlyr due to the increase in cosmic and terrestrial radiation levels. In fact, for every 100 feet above sea level, a person will receive an additional 1 mrem/yr from cosmic radiation. In several regions of the world, naturally high concentrations of uranium and radium deposits result in doses of several thousand mremlyr to their residents (CRC Handbook. "Radioecology: Nuclear Energy and the Environment." F.

Ward Whicker and Vincent Schultz, Volume I, 1982).

Analytical results are divided into four ODCM required categories based on exposure pathways:

Airborne, direct radiation, ingestion, and waterborne. Each of these pathways is described below:

The airborne exposure pathway includes airborne iodine and airborne particulate. The 2005 results were similar to previous years. There was no notable increase in natural products and no detectable fission products or other radionuclides in the airborne particulate media during the year.

The direct exposure pathway measures environmental radiation doses by use of thermoluminescent dosimeters (TLDs). TLD results have indicated a stable trend and compare well with previous years.

The ingestion exposure pathway includes milk, fish and food products (leafy vegetation) samples.

The gamma spectroscopy counting indicated positive results for potassium-40 (K40) at average environmental levels. No other radionuclides were identified.

The waterbome exposure pathway includes surface (ocean) water, drinking water supply, shallow well water and sediment. Water samples were analyzed for tritium, gross-beta and gamma-emitting radionuclides. Tritium was not identified in the samples analyzed. Gamma analysis of samples indicated no plant-related gamma-emitting radionuclides above detection limits. For groundwater, the gross beta activity seen at both locations is similar to what was seen in the pre-operational program and is consistent with results from previous years of commercial operations The results of the 2005 Radiological Environmental Monitoring Program continues to clearly demonstrate that there is no significant short term or chronic long-term radiological impact on the environment in the vicinity of Seabrook Station from plant operations. No abnormal radiological .

characteristics were identified or observed in the surrounding environs. Plant effluents contribute no measurable radiation exposure to the general public as confirmed and assessed by the REMP.

Environmental radiation levels measured at the site boundary and near the nearest resident are at background levels. This is consistent with previous data. As a result, no increasing or decreasing trends were identified.

U L1 v I

LIST OF TABLES Number Title Page 2.1 Radiological Environmental Monitoring Program ...................................................... 3 2.2 Radiological Environmental Monitoring Locations ....................................................... 4 3.1 Environmental TLD Measurements ................. ....................................... 62 4.1 Detection Capabilities for Environmental Sample Analysis ............................ ............... 84 4.2 Reporting Levels for Radioactivity Concentrations in Environmental Samples ......... ....85 5.1 FANPEL Results in Intralaboratory Process Control Program ..................... ................. 89 5.2 FANPEL Results in the Analytics Crosscheck Program ............................................... 90 5.3 Summary of Blind Duplicate Samples ...................... .................................. 95 6.1 2005 Land Use Census Results ........................................................ 97 vi

LIST OF FIGURES ,,

Number Title Paae Figure 2.1 Radiological Environmental Monitoring Locations Within 4 Kilometers of Seabrook Station .............................. 7 Figure 2.2 Radiological Environmental Monitoring Locations Between 4 & 12 Kilometers of Seabrook Station ................... 8 Figure 2.3 Radiological Environmental Monitoring Locations Outside 12 Kilometers of Seabrook Station .......................... 9 Figure 2.4 Direct Radiation Monitoring Locations Within 4 Kilometers of Seabrook Station .......................................... 10 Figure 2.5 Direct Radiation Monitoring Locations Between 4 & 12 Kilometers of Seabrook Station .......................................... 11 Figure 2.6 Direction Radiation Monitoring Locations Outside 12 Kilometers of Seabrook Station .......................................... 12 Figure 3.1 Gross-Beta Measurements of Air Particulate Filters ............................ 15 Figure 3.1.1 Gross-Beta Measurements of Air Particulate Filters Quarterly Averages .......................................... 16 Figure 3.1.2 Gross-Beta Measurements of Air Particulate Filters Quarterly Averages .......................................... 17 Figure 3.1.3 Gross-Beta Measurements of Air Particulate Filters Quarterly Averages .......................................... 18 Figure 3.2 Gross-Beta on Air Particulate Filters Quarterly Averages ..................... 19 Figure 3.3 Cesium-137 in Milk .......................................... 25 Figure 3.3.1 Cesium-1 37 in Milk Annual Average Concentrations ........................... 26 Figure 3.4 Cesium-137 in Milk .......................................... 27 Figure 3.4.1 Cesium-137 in Milk Annual Average Concentrations ........................... 28 Figure 3.5 Gross-Beta Measurements of Ground Water..................................... 35 Figure 3.5.1 Gross-Beta Measurements of Ground Water U

Semi-Annual Averages.......................................... 36 Figure 3.6 Environmental Radiation Measurements (Using TLD's) ....................... 64 Figure 3.6.1 Environmental Radiation Measurements (Using TLD's) ....................... 65 Figure 3.7 Environmental Radiation Measurements (Using TLD's) ....................... 66 Figure 3.7.1 Environmental Radiation Measurements (Using TLD's) ....................... 67 Figure 3.8 Environmental Radiation Measurements (Using TLD's) ....................... 68 vii If I i I L.J

List of Figures (cont'd)

Figure 3.8.1 Environmental Radiation Measurements (Using TLD's) ....................... 69 Figure 3.9 Environmental Radiation Measurements (Using TLD's) ....................... 70 Figure 3.9.1 Environmental Radiation Measurements (Using TLD's) ....................... 71 Figure 3.10 Environmental Radiation Measurements (Using TLD's) ....................... 72 Figure 3.10.1 Environmental Radiation Measurements (Using TLD's) ....................... 73 Figure 3.11 Environmental Radiation Measurements (Using TLD's) ....................... 74 Figure 3.11.1 Environmental Radiation Measurements (Using TLD's) ....................... 75 Figure 3.12 Environmental Radiation Measurements (Using TLD's) ....................... 76 Figure 3.12.1 Environmental Radiation Measurements (Using TLD's) ....................... 77 Figure 3.13 Environmental Radiation Measurements (Using TLD's) ....................... 78 Figure 3.13.1 Environmental Radiation Measurements (Using TLD's) ....................... 79 Figure 3.14 Environmental Radiation Measurements (Using TLD's) ....................... 80 Figure 3.14.1 Environmental Radiation Measurements (Using TLD's) ....................... 81 viii

L L ANNUAL RADIOLOGICAL ENVIRONMENTAL OPERATING REPORT 1.0 Introduction FPL Energy Seabrook, LLC's Radiological Environmental Monitoring Program (REMP) at IU Seabrook Station has been designed and carried out to achieve the following specific objectives:

U

To provide an indication of the appearance or accumulation of any radioactive material in the environment caused by the operation of the nuclear power station.

To provide assurance to regulatory agencies and the public that the station's environmental L impact is known and within anticipated limits.

To verify the adequacy and proper functioning of station effluent controls and monitoring systems.

To provide standby monitoring capability for rapid assessment of risk to the general public in the event of unanticipated or accidental releases of radioactive material.

FPL Energy Seabrook, LLC collected the terrestrial samples. Normandeau Associates, Inc.

collected the marine and sediment samples. After initial processing, the samples were sent to the Framatome Environmental Laboratory in Marlborough, Massachusetts for further processing and radionuclide analysis. Framatome also processed the environmental thermoluminescent dosimeters (TLD's).

This report is a summary of the findings of the Radiological Environmental Monitoring Program for 2005. It is being provided in compliance with Part A of Seabrook Stations Offsite Dose Calculation Manual (ODCM) and Technical Specification 6.8.1.3.

L 2.0 Environmental Monitoring Program Table 2.1 outlines the monitoring program as specified in the Seabrook Station ODCM, Part B, Section 4. Table 2.2 lists the operational sampling stations and their specific locations (distances are measured from the center of the Unit I Containment Building). The sampling locations are shown on maps in Figures 2.1 through 2.6. The sampling and analysis program l as described above fulfills the minimum requirements for environmental sample collection and analysis as contained in the ODCM Table A.9.1-1, and includes additional sampling of various pathways and locations beyond the minimum.

Below are listed the two-letter media codes and what they represent:

AP Air Particulate CF Charcoal Filter TM Milk WG Ground Water WS Surface (Sea) Water SE FH Sediment Fin fish L

HA Lobsters MU Mussels (Shellfish-edible portion only)

MS Mussels (Shellfish - shell portion only)

TL Direct Radiation (TLD)

AL Irish Moss (algae)

TF Food Crop A TG Vegetation LI LI LX

Table 2.1 Radiological Environmental Monitoring Proaram Media Sampling Frequency Required Analyses Air Particulate (AP) -Bi-Weekly Gross Beta

-Quarterly Composite Gamma spectroscopy Charcoal Filter (CF) -Bi-Weekly 1-131 Milk (TM) -Monthly (Semimonthly Gamma spectroscopy When animals 1-131 are on pasture)

Surface (Sea) Water (WS) -Monthly Gamma spectroscopy

-Quarterly Composite H-3 (composite)

Sediment (SE) -Semiannually Gamma spectroscopy Fish & Invertebrates -Quarterly or Gamma spectroscopy (FH, HA, MU) -Semiannually Direct Radiation (TL) -Quarterly Integrated gamma exposure Irish Moss (AL) -Semiannually Gamma Spectroscopy Ground Water (WG) -Quarterly Gamma Spectroscopy Gross Beta H-3 Food Crops (TF) -Monthly/Growing Season Gamma Spectroscopy Vegetation (TG) -Monthly/Growing Season Gamma Spectroscopy 1-131 Table 2.2 o1

%_S Radiological Environmental Monitoring Locations 2004 Distance From Direction Plant From Station Code (Media - Sta. No.)

Station Description Zone (km) Plant L AP/CF-01 + PSNH Barge Landing Area 2.6 ESE 2.5 E I AP/CF-02+ Hampton Marina AP/CF-03+ Southwest Boundary 1.0 SW AP/CF-04+ West Boundary 1.2 W AP/CF-05 Winnacunnet High School 4.0 NNE AP/CF-07+ PSNH Substation 5.7 NNW AP/CF-08 E&H Substation 3.4 SSE AP/CF-09+ Georgetown Electric Light Co. 21.4 SSW TM-09 Hampton, NH 5.3 NNW TM-15 Hampton Falls, NH 6.9 NW TM-20 Rowley, MA 17.0 S TM-23 Newbury, MA 12.0 S Seabrook Town Wells 5.6 W WG-01 WG-13 Seabrook Station Well No.13 1.0 N I

WS-01 + Hampton-Discharge Area 5.3 E WS-51 + Ipswich Bay 16.9 SSE SE-02 Hampton-Discharge Area 5.3 E E

L SE-07 Hampton Beach 3.1 SE-08+

SE-52 SE-57 Seabrook Beach Ipswich Bay Plum Island Beach 3.2 16.9 15.9 ESE SSE SSE L

FH-03+

FH-53+

Hampton-Discharge Area Ipswich Bay 4.5 16.4 ESE SSE L E

HA-04+

HA-54+

Hampton-Discharge Area Ipswich 5.5 17.2 SSE V MU-06+ Hampton-Discharge Area 5.2 E MU-09 MU-56+

Hampton Harbor Ipswich Bay 2.6 17.4 15.8 E

SSE SSE L

MU-59 Plum Island AL-05 Hampton-Discharge Area 5.2 E AL-55 Ipswich Bay 17.4 SSE TF-02 Hampton Falls, NH I 5.0 WNW TF-03 Salisbury, Ma 5.1 SW TF-06 Ipswich, Ma 2 26:0 S TG-08+ North Access Rd, Site Boundary I 1.05 W TG-09+ General Office Bld. Site Boundary 0.94 SW TG-10+ Georgetown Electric Light Co. 2 21.4 SSW i I

Table 2.2 (Cont'd)

Radiological Environmental Monitoring Locations 2004 Distance From [)irection Station Code Station Plant F:rom (Media - Sta. No.) Description Zone (kin) Plant TL-1+ Brimmer's Lane, I 1.0 N Hampton Falls TL-2+ Landing Road, Hampton I 3.0 NNE TL-3+ Glade Path, Hampton Beach I 2.9 NE TL-4+ Island Path, Hampton Beach I 2.3 ENE TL-5+ Harbor Road, Hampton Beach I 2.6 E TL-6+ PSNH Barge Landing Area I 2.7 ESE TL-7+ Cross Road, Seabrook Beach I 2.6 SE TL-8+ Farm Lane, Seabrook I 1.3 SSE TL-9+ Farm Lane, Seabrook I 1.3 S TL-1 0+ Site Boundary Fence I 1.2 SSW TL-1 1+ Site Boundary Fence I 1.0 SW TL-12+ Site Boundary Fence I 1.2 WSW TL-1 3+ Inside Site Boundary I 1.2 W TL-14+ Trailer Park, Seabrook I 1.1 WNW TL-15+ Brimmer's Lane, I 1.3 NW Hampton Falls TL-1 6+ Brimmer's Lane I 1.2 NNW Hampton Falls TL-17+ South Road, North Hampton 0 7.8 N TL-18+ Mill Road, North Hampton 0 7.6 NNE TL-19+ Appledore Avenue, 0 7.7 NE North Hampton TL-20+ Ashworth Avenue, 0 3.2 ENE Hampton Beach TL-21+ Route 1A, Seabrook Beach 0 3.7 SE TL-22+ Cable Avenue, Salisbury 0 7.6 SSE Beach TL-23+ Ferry Road, Salisbury 0 8.1 S TL-24+ Ferry Lots Lane, 0 7.2 SSW Salisbury TL-25+ Elm Street, Amesbury 0 7.6 SW TL-26+ Route 107A, Amesbury 0 8.1 WSW TL-27+ Highland St. S. Hampton 0 7.5 W TL-28+ Rte. 150, Kensington 0 7.5 WNW TL-29+ Frying Pan Ln., Hampton Falls 0 7.2 NW TL-30+ Route 27, Hampton 0 7.6 NNW L

Table 2.2 (Cont'd)

Radiological Environmental Monitoring Locations 2004 Distance From Direction I Station Code Station Plant From L (Media - Sta. No.) Description Zone (ki) Plant TL-31+ Alumni Drive, Hampton S 3.8 NNE TL-32+ Seabrook Elementary School S 2.0 S TL-33+ Dock Area, Newburyport S 9.8 S TL-34+ Bow Street, Exeter S 12.0 NW TL-35+ Lincoln Ackerman School S 2.3 NNW !

TL-36+ Route 97, Georgetown 2 22.6 SSW TL-37+ Post Office Plaistow, NH 2 21.5 WSW TL-38+ Emerson St. Hampstead, NH 2 27.7 W TL-39+ Fremont, NH 2 27.0 NW TL-40+ Newmarket, NH 2 21.6 NNW TL-41 Portsmouth, NH 2 21.0 NNE TL-42 Ipswich, MA 2 22.8 SSE 1 TL-43 Education Center S 0.3 ENE TL-44 Rocks Road Landing S 0.6 SW TL-45 TL-46 TL-47 Hampton Fire Station Seabrook Beach Hampton Falls, NH S

S S

4.4 2.8 4.1 NE ESE WNW I

Zone indices are: 1 = Indicator Stations; 2 = Control Stations; 0 = Outer Ring TLD;

+= Sample I= Inner Ring TLD; S = Special Interest TLD Locations required by the Off-Site Dose Calculation Manual (ODCM)

U U

L Li L

- -- minminminm-- - - -

21 Figure 2.1 REMP Locations Within 4 Kilometers m 0

l ha 1 LEGEND le 0 AP= Air Particulate CF =Charcoal Filter C

WG Well Water 3

MU =Mussels 0 SE= Sediment 0

TG _Vegetation o 0

I0 I _ x,,

0 CD KM 0

0 _ 2 0 0

m m m m m m - m m m m m m Figure 2.2 REMP Locations Between 4 and 12 Kilometers CD APIC -07 T LEGEND TM-iS \

mpton- Sampling Locations 0

X .

-7 rA AP -Air Particulate

/ p. CF = Charcoal Filter I AL =Algae 0 FH =Fish3 TF/ MU = Mussels SE - Sediment 2 WS = SeaWater HA = Lobster 0

TM, =Milk o WITF = Food Products

WG -WellWater _

N A0 CD

' _1 o2 M{3 0

CCZ

M m - m m m m m m m m m M M

-n Co rM-3 0

Figure 2.3 REMP Locations Outside 12 Kilometers IQ LEGEND 0 (0

0_.

Sampling Locations m

AP - Air Particulate CF = Charcoal Filter 0M

+ AL-Algae FH = Fish ~s.

MU = Mussels SE Sediment 3 WS =Sea Water 0 (D a).

HA = Lobster - O 0

TM Milk o CQ 0 .

5' 0o 0)

V TF = Food Product

TG = Vegetation a 0&r a,

N 00 A 0 0

Xo 0

KM 0 D7 CJ M

Qa 0 10 20 0n

M Mm - m mM mM mm M M m m m mM

'1 Figure 2.4 Direct Radiation Monitoring Locations Within 4 Kilometers CD N

CD LEGEND Sampling Locations X TLD's 0

w 00.

0)

Co 0 0)

C.

0 0

0 0C2F.

CD D

0_

Miles 0 .5 1 rf)sc

CD Figure 2.5 Direct Radiation Monitoring Locations Between 4 and 12 Kilometers N TLs 8 lLEGEND Sampling Locations CL 0

XTLD's 0

CO 0) 0 Ca 1 l;EABRO -.

KM CD 0 1 2l 0 o 00 Cog no~

m - m m m - m m m - - m m m m m m - m Co Figure 2.6 Direct Radiation Monitoring Locations Outside 12 Kilometers LEGEND 0 H0 Sampling Locations 0.

. )X TLD~s 0

0 Co Q0 L N0 -

'I- X 3

0 KMn

' X.* )

ot/L:N C0 I

(0 0

U U 3.0 Summary of Radiological Environmental Data The following pages summarize the analytical results of the environmental samples, which were collected in 2005. Each environmental media category is presented as a separate subsection. A table that summarizes the data follows a discussion of the sampling requirements and results for each media type. Listed at the top of each table are the units of measurement for each med um.

L The left-hand column contains the radionuclide which is being reported, total number of analyses of that radionuclide, and the number of measurements that exceed the required reporting level as documented in Table A.9.1-3 of the ODCM. The latter are classified as "non- routine" measurements. The next column lists the Lower Limit of Detection (LLD) for those radionuclides that have detection capability requirements specified in the ODCM.

Those sampling stations which are adjacent to the plant and which could conceivably be affected by the operation of Seabrook Station are called "Indicator" or "Zone 1" stations. Distant stations, which are beyond potential plant influences, are called "Control" or "Zone 2" stations. Direct radiation (TLD) monitoring locations are subdivided into site boundary, inner ring, and outer ring (emergency response) stations.

A set of statistical parameters is calculated for each radionuclide. This set of statistical parameters includes separate analyses for (1) the indicator stations, (2) the station having the highest annual mean concentration for that radionuclide, (3) and control stations. For each of these three groups of data, these parameters are as follows:

The mean value of all concentrations.

The range of values.

The number of positive measurements (a concentration which is greater than 3 times the standard deviation for that measurement) divided by the total number of measurements.

Each single radioactivity measurement in media datum in this report is based on a single measurement and is reported as a concentration plus or minus a one standard deviation uncertainty. The quoted uncertainty term represents only the random uncertainty associated with the radioactive decay process (counting statistics), and not the propagation of all possible uncertainties in the analytical procedure.

Attachment I contains the data for the samples collected in 2005. The results are organized by sample type, within each sample type listing the data is alphabetical by nuclide, within each nuclide listing the data is chronologically arranged by end date (date of sample collection).

The radionuclide value concentrations (charcoal media) have been corrected for radioactive decay to the end of the collection. The airborne radioiodine (charcoal) concentrations have been calculated assuming a constant flow rate and concentration throughout the collection period and corrected for decay while sampling as well as between sample collection termination and analysis.

3.1 Air Particulate Air monitoring stations were established at a total of eight locations. Seven of the locations are indicators, while the remaining one is a control station.

Airborne particulate is collected by passing the air through a glass-fiber filter. In 2005, these filters were [1 collected either weekly or bi-weekly and held for at least 100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months before being analyzed for gross-beta activity (indicated as GR-B in tables) to allow for the decay of radon daughter products. The change from a standard weekly to a biweekly filter change out cycle was initiated for all air particulate stations as a result of equipment / procedure upgrades that were designed to reduce potential system down time due to equipment failure. Continuous automated and real-time remote monitoring of vital system parameters is performed with telemetry that detects power outage, pump failure, filter degradation, tubing failures and excessive filter loading. The telemetry communicates by cellular transmission to a web server that communicates to a shift technician's pager when set-point thresholds are reached, providing 24/7 alert notification. This capability provides for timely identification of problems and corrective actions that reduce the potential loss of air sampling. All eight sample stations used a biweekly filter change out cycle in 2005.

For the year, 195 particulate filters were collected bi-weekly for gross beta activity. The gross beta activity i for the indicator locations is statistically equivalent to that seen at the control station. The gross beta results for all stations are also similar to what was seen in the pre-operational program and for the last fifteen years of commercial operation. Fluctuations seen in the gross beta activity throughout the year can be attributed to changes in the environment. Natural environmental processes such as wind direction, i precipitation, snow cover, and soil temperature and moisture affect concentrations of naturally occurring radionuclides in the atmosphere directly above land. LI No plant related gamma-emitting radionuclides were detected in any of the quarterly composite air filter samples analyzed. Therefore no increasing or decreasing trends were observed. In 2005, naturally L

occurring Be-7 was the only nuclide detected. Be-7 is of cosmogenic origin. This is consistent with previous years both pre- and post-operationally. L The air particulate sampling program demonstrated no off-site dose to the public or impact to the environment, from this pathway, as the result of plant operations. This is consistent with previous years and the pre-operational program. L Air particulate sample collection and analysis deviations from the ODCM required program are described in Section 4. Three deviations were interruptions in continuous pump operation detected by telemetry, and did not result in missed samples.

L Li L'

Li Li L

FIGURE 3.1 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS SEABROOK STATION 0.08 __ __ ___ .__ -0.08 0.07 0.07 006 0.06 0.05 0.05 0.04 0.04 0-003 0.03 002 .0 0.01 0.01 0 0 January May August December 2005

-aAP-01 Barge Landing Area

-- AP-02 Hampton Marina AP-03 SW Boundary

-AP-04 W Boundary A. AP-05 Winnacunnet High School

- AP-09 Georgetown (Control)

- AP-07 PSNH Substation, Hampton

-AP-08 Exeter &Hampton Electric Co.

Col

FIGURE 3.1.1 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATION 0.16 0.16 Chernobyl May, 1986 0.14 0.14 0.12 tI 0.12 aD 0.1

-_0.1 U)

E zo 0.08 - 0.08 0

a.00 5% Criticality June, 1989 0.06 Full Power May, 1990 0.04 0.02 I . , I ,. , I I I I I I , ,1 I I I 0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 AP-01 Barge Landing Area I a AP-02 Hampton Marina

-- I AP-03 SW Boundary x AP-06109 Georgetown Substation (Control)

FIGURE 3.1.2 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATION 0.16 -

Chernobyl May, 1986 0.14-0.12 -

_ 11 0.1 E

C.)

0.08w

.0 0 5% CriticeIlity CL 0.

006 - June, 1S989 LillPower 0.04 -I lay, 1990 0.02 -

1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

- AP-04 W Boundary 13 AP-05 Winnacunnet High School

-+AP-06/09 Georgetown Substation (Control)

I I cOo

FIGURE 3.1.3 GROSS-BETA MEASUREMENTS OF AIR PARTICULATE FILTERS QUARTERLY AVERAGES SEABROOK STATION 0.16 0.14 0.12 G) 0.1 E

0 0.08 C) 0 a-

+ AP-06109 Georgetown Substation (Control)

O AP-07 PSNH Substation, Hampton I

-A-AP-08 Exeter & Hampton Electric Co.

cio

FIGURE 3.2 IGROSS-BETA ON AIR PARTICULATE FILTERS 3 QUARTERLY AVERAGES SEABROOK STATION 0.08 - 0.08 U 0.06 -0.06 E

0.04 - 0.04 0.02 0a02 I 0 - -i I-I-,-I-,-,-I I I, 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006

- Indicators o Control I

I Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Air Particulates (AP) UNITS: vCI/cubic meter Indicator Stations Station With Highest Mean Control Stations Radionuc!ides Mean Station Mean Mean (No. Anal fses) Required Range Range Range (Non-Routine*) LLD (No. Detected" t) (No. Detected t t) (No. Detected' t)

GR-8 (195) 0.01 1.5 -2 03 1.6B -2 1.5E -2 (0) ( -2.4 - 31.4)E -3 ( 6.0 - 29.8)1 -3 ( 6.1 - 2!.0)E -3 (168/ 170) (25/ 25) (25/ 25)

Be-7 (32) 8.7B -2 08 9.61 -2 9.1E -2 (0) 4.0 - 124.0)8 -3 ( 6.4 - 12.1)E -2 ( 7.5 - 1:L.3)B -2 (27/ 28) (4/ 4) /4/ 4)

K40 (32) -1.oe -3 08 2.9B -3 -3.7E -4 (0) -2.2 - 1.2)E -2 ( -4.7 - 10.8)E -3 -5.5 - 3.1)1 -3 (O/ 28) (0/ 4) I0/ 4)

Cr-51 (32) 2.21 -3 05 1.51 -2 -5.31 -3 (0) -3.1 - 11.0)E -2 ( -2.8 - 11.0)E -2 -1.7 - 0.3)1 -2 (O/ 28) (0/ 4) ':0/ 4)

Mn-54 (32) -1.61 -4 07 1.61 -4 -2.11 -4 (0) -1.6 - 0.7)E -3 -1.9 - 5.5)1 -4 -4.2 - 3.2)1 -4 (O/ 28) (0/ 4) 1:0/ 4)

Co-57 (32) -5.71 -5 02 2.61 -4 3.51 -5 (0) ( -2.6 - 0.7)E -3 -1.4 - 6.9)E -4 -1.1 - 1.6)1 -4 (0/ 28) (0/ 4) -0/ 4)

Co-58 (32) -9.81 -5 05 3.8B -4 -1.41 -4 (0) ( -1.3 - 1.7)E -3 -1.3 - 1.7)E -3 -3.7 - 0.9)E -4 (O/ 28) (0/ 4) (0/ 4)

Fe-59 (32) 6.1Z -5 09 1.51 -3 1.51 -3 (0) ( -4.1 - 5.6)Z -3 0.0 - 2.8)E -3 0.0 - 2.8)1 -3 (O/ 28) (0/ 4) :0/ 4)

Co-G0 (32) 5.8E -5 05 1.OZ -3 -2.2z -5 (0) -8.0 - 33.0)E -4 -2.1 - 33.0)1 -4 -3.5 - 2.4)1 -4 (O/ 28) (0/ 4) '0/ 4)

Zn-65 (32) -4.21 -4 09 8.51 -4 8.58 -4 (0) -5.6 - 1.5)1 -3 -3.0 - 23.7)1 -4 -3.0 - 23.7)E -4 (O/ 28) (0/ 4) (0/ 4)

Se-75 (32) 1.31 -4 05 1.11 -3 -3.08 -4 (0) -1.1 - 3.5)E -3 -5.2 - 35.0)E -4 -5.2 - 0.9)E -4 (0/ 28) (0/ 4) (0/ 4)

Zr-95 (32) -1.11 -4 02 6.71 -4 -4.58 -4 (0) -5.8 - 2.1)E -3 ( 2.0 - 13.0)E -4 (-1.0 - -O.1)E -3 (O/ 28) (0/ 4) (0/ 4)

Ru-103 (32) -2.31 -4 03 1.01 -3 -2.7B -4 (0) -1.1 - 0.2)1 -2 -4.8 - 21.0)1 -4 -9.2 - 4.2)E -4 (O/ 28) (0/ 4) (0/ 4)

Non-Rcutine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

"The faiction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Air Particulates (AP) UNITS: pCi/cubic meter Indicator Stations Station With Highest Mean Control Stations Radionuudides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine') LLD (No. Detected*) (No. Detected") (No. Detected*)

I I Ru-106 (32) -3.41 -4 05 3.41 -3 8.01 -4 (0) -1.4 - 0.7)B -2 ( -2.0 - 60.0)B -4 -1.7 - 4.8)B -3 (0/ 28) (0/ 4) (0/ 4)

AgI-108m (32) 2.31 -5 01 1.7B -4 -1.O3 -4

i-1 (0) -4.8 - 9.0)B -4 ( -2.8 - 6.0)1 -4 -3.0 - o.o)e -4 (0/ 28) (0/ 4) (0/ 4)

Ag-liOm (32) 2.4E -5 05 4.4B -4 2.03 -4 (0) -9.1 - 13.6)3 -4 ( 0.0 - 8.O)B -4 -4.2 - 8.5)B -4 (0/ 28) (0/ 4) (0/ 4)

Sb-124 (32) 6.71 -4 05 3.1B -3 -6.33 -4 (0) -3.7 - 16.0)E -3 ( -3.7 - 16.0)9 -3 -9.0 - O.O)1 -4 (O/ 28) (0/ 4) (0/ 4)

Sb-125 (32) 4.2B -5 05 1.63 -3 -3.31 -5 (0) -1.7 - 5.3)B -3 -5.0 - 53.0)E -4 (-9.6 - 14.0)B -4 1-131 (32)

(0)

-4.0o -2 (0/ 28)

-1.0 - O.O)3 O 01 6.0z -3 (0/

-1.0 - 3.2)B -2 4)

-2.2E -3 (0/

(-1.1 - 1.2)B -2 4)

L (0/ 28) (0/ 4) (0/ 4)

Cs-134 (32)

(0) 0.05 -1.0 -5

-8.2 - 19.0)1 -4 05 3.4B -4

-8.2 - 19.0)Z -4 1.4B -4

(-8.0 - 37.0)2 -5 L

(0/ 28) (0/ 4) (0/ 4)

Cs-1 37 (32) 0.06 -9.21 -5 08 4.81 -4 1.O3 -4 (0) -4.6 - 1.0)B -3 1.4 - 10.4)3 -4 4.0 - 15.0)B -5 (0/ 28) (0/ 4) (0/ 4)

Ba-140 (32)

(0) 6.2B -4

-2.2 - 2.0)3 -2 (0/ 28) 08 8.6E -3

-3.4 - 16.0)B -3 (0/ 4)

-3.63 -3

-1.1 - 0.3)B -2 (0/ 4)

L Ce-I41 (32) -9.3E -5 05 1.9e -3 5.8e -4 (0) -4.1 - 8.0)B -3 -2.2 - 8.0)E -3 -2.2 - 2.9)e -3 (0/ 28) (O/ 4) (0/ 4)

Ce-44 (32) -4.OB -4 02 2.6z -3 1.81 -4 fI (0) -4.7 - 4.6)B -3 4.0 - 46.0)B -4 -1.2 - 0.9)B -3 (0/ 28) (0/ 4) (0/ 4) LJ Th-232 (32) 8.23 -4 05 2.11 -3 4.5B -4 1

(0) ( -2.1 - 5.3)1 -3 ( 4.0 - 53.0)B -4 ( -1.2 - 1.9)B -3 I (0/ 28) (0/ 4) (0/ 4) 11

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

L

L 3.2 Charcoal Filters Charcoal filter cartridges are in series with the air particulate glass-fiber filters. Monitoring stations were established at a total of eight locations. Seven of these are indicators and one is a control. Charcoal filters fromn the air sampling stations were collected and analyzed for 1-131 activity to a lower limit of i detection (LLD) of 0.07 pCi/m 3.

During 2005, a total of 195 charcoal cartridges from eight locations were analyzed. As described for the air partic'ulate samplers (see Section 3.1), the collection cycles for the charcoal filters was biweekly during 2005. An iodine decay analysis compared a 1-week vs. 2-week air sampling cycle and the ability to detect iodine. For the assumption of chronic air concentrations of 1-131, the longer collection time results in a higher total deposition of 1-131 that remains on the cartridge at counting time and, therefore, an MDA (Minimum Detectable Activity) equal to or better than the 1-week cycle. For potential short duration releases of 1-131, a modest increase in sampler flow rate (to approximately 1.8 SCFM) provides for a higher ioiine collection factor per unit time. This higher collection factor compensates for the decay losses due to the longer turn-around time with a 2-week change-out cycle such that the effective detection capability remains about the same.

No sample analysis indicated a detectable measurement for 1-131 that was statistically relevant (positive)

at the air sampling locations stated in the ODCM.

The REMP program has detected no radioiodine at any offsite air sample location, since Seabrook Station's initial criticality of June 1989. The pre-operational data for 1-131 are consistent with present data.

The estimated organ doses from iodine in gaseous effluents are well below the I OCFR50, Appendix I dose criteria for the reporting period. Therefore, no increasing or decreasing trends were observed.

Charcoai filter sample collection and analysis deviations from the ODCM required program are described in Section 4.

LI Radiological Environmental Program Summary I' Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Charcoal Cartridoe (CF) UNITS: PCI/cubic meter L..J Indicator Stations Station With Highest Mean Control Stations Radionucdides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected"*) (No. Detected**) (No. Detected-)

1-131 (195) 0.07 3.33 -4 09 3.03 -3 3.03 -3 (0) ( -1.1 - 1.7)E -2 ( -7.4 - 17.5)3 -3 ( -7.4 - 17.5)E-3 (0/ 170) (0/ 25) (0/ 25)

I L

L L

L (17 L

LI

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown in parentheses.

L

i.3 Milk Milk samples were collected semi-monthly during the pasture season and monthly at other times.

Samples are analyzed for 1-131 and gamma-emitting radionuclides.

The ODCM (Table A.9.1-1) requires that milk samples be collected from three locations within 5 km of the plant having the highest dose potential. If there are none, then one sample from milking animals in each of three areas between 5 to 8 km distant where the doses are calculated to be greater than 1 mrem/yr. Due to the limited inventory of milk animals in the site area, as reconfirmed by the 2005 Land Use Census, no suitable substitute location was available to replace the lost sample site maintaining the number of available sample locations to less than the number required by the ODCM sampling program (no available milk within 5 km, and only two rnilk location between 5 and 8 km). The ODCM allows for broad leaf vegetation samples to be collected if milk sampling is not performed in accordance to the REMP requirements. As a result, tNo site boundary and one control vegetation collection locations as sampled to compensate fcr tie limited milk sampling (see Section 3.12).

A total of 72 milk samples were collected within the year from available locations. Each sample was analyzed for gamma emitting radionuclides. In addition, all samples were evaluated for 1-131 through an iodine extraction process. Gamma analysis indicated only potassium40 was present.

No detectable concentrations of Cs-1 37 were measured in any sample collected in 2005, Figure 3.4.1 indicates results from previous years. Past detection of Cs-137 is attributed to atmospheric nuclear weapons testing that persist in the environment based on similar measurements during the pre-operational period of the REMP. Figures 3.3, 3.3.1, 3.4, and 3.4.1 illustrate the analysis results for Cs-1 37 in milk over the current year (2005) and previous years of the REMP.

F'otassium-40 was detected in all indicator and control locations. Potassium40 is a naturally occurring nuclide detected in many environmental sample media.

IDdine-131 was not positively identified at any location for the year. The samples met the Lower Limit of Detection (LLD) requirements (1 pCi/kg) for 1-131 in milk. This is consistent with previous years for both the pre-operational and operational phases of the program.

The calculated dose as the result of plant effluents is not evaluated due to the fact that no plant related radionuclides were detected. The milk-sampling program demonstrated that there is no imlpact to the public or environment, through this pathway, from plant operations. Therefore, no increasing or decreasing trends were observed.

Milk sample collection and analysis deviations from the ODCM required program are described in Section 4.

FIGURE 3.3 CESIUM-137 IN MILK SEABROOK STATION 30 25 20 15 M 10 5

-5

-10 I . . . I I S I N I Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2005

- TM-09 Dairy Farm, Hampton NH

+- TM-15 Goat Herd, Hampton Falls NH

-X-TM-20 Dairy Farm , Rowley MA (Control) i TM-23 Sunshine Dairy Farm, Newbury, MA i

L

FIGURE 3.3.1 CESIUM-137 IN MILK ANNUAL AVERAGE CONCENTRATIONS 50 - 50 40 -40 30 -30 0)

Chernobyl May, 1986 20 + 20 1

Full Power 10 0-;-.A,I e*I'~ , ,oee l, i eS"Z.

,, b _ NSv4fp 'v I '

-O-TM-04 Dairy Farm, Salisbury MA TM-08 (prior to 1995 TM-10) Dairy Farm, Hampton Falls NH

-- TM-09 Dairy Farm, Hampton NH 6 TM-15 Goat Herd, Hampton Falls NH FIGURE 3.4 CESIUM -137 IN MILK SEABROOK STATION 30 25 20 15 0) 0 Q.

10

-5 1 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2005 A TM-20 Dairy Farm, Rowley MA (Control)

-- TM-23 Sunshine Dairy Farm, Newbury, MA B c4F

FIGURE 3.4.1 CESIUM-137 IN MILK ANNUAL AVERAGE CONCENTRATIONS 45 45 35 35 25 25 0 5% Criticality

0. June, 1989 15 15 Full Power May, 1990 5 5

-5 l1 , - , i li .I I I I . . . . . . . -5

9o° Hb°9`1

.,,l" 99°11`

9 te Ebb e 1 le6 80 le> e9 Ite le rloOXt e e oel"

- 0 TM-16 Goat Herd, Kensington NH

-A- TM-21 Dairy Farm, N. Andover MA (Control)

-- TM-23 Sunshine Dairy Farm, Newbury, MA TM-20 Dairy Farm, Rowley MA (Control)

L Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Milk (TM) UNITS: pCI/ka Indicator Stations Station With Highest Mean Control Stations IfI Radionuclides (No. Analyses)

Mean Required Range Station Mean Range Mean Range (Non-RoLUne*) LLD (No. Detected**) (No. Detected*') (No. Detected'")

Be-7 (72) 1.1Z 0 23 3.41 0 1.6E 0

-2.9 - 3.3)1 1 -2.3 - 3.3)1 1 -2.4 - 2.7)1 1 (0)

(0/ 54) (0/ 18) (O/ 18)

K 40 (72) 1.41 3 15 1.51 3 1.31 3 1.2 - 1.7)B 3 1.2 - 1.7)B 3 1.2 - 1.5)1 3 (0)

(54/ 54) (18/ 1S) (3.8/ 18)

Cr-51 (72) 5.5B -1 15 3.3Z 0 -3.0Z 0 (0) -3.5 - 2.7)E 1 -1.5 - 2.5)1 1 -3.0 - 2.5)E 1 (0/ 54) (0/ 18) (0/ 18)

Mn-54 (72) -2.61 -2 23 9.01 -1 -6.11 -1

-3.6 - 3.5)E 0 -1.3 - 3.5)1 0 -3.3 - 2.1)B 0 (0)

(0/ 54) (0/ 18) (0/ 18)

Co-57 (72) -1.5Z -1 23 1.2Z -1 7.01 -2

-2.8 - 2.9)1 0 -2.8 - 2.9)1 0 ( -2.0 - 2.1)E 0 (0)

(0/ 54) (0/ 18) (0/ 18)

Co-58 (72) -4.81 -1 09 -2.71 -1 -3.8B -1 (0) -5.0 - 5.1)1 0 -3.7 - 5.1)B 0 ( -3.8 - 1.9)B 0 (0/ 54) (0/ 18) (0/ 18)

Fe-59 (72) 1.2Z 0 09 1.81 0 6.31 -1 (0) -1.8 - 1.8)1 1 -6.9 - 14.2)1 0 ( -1.4 - 0.9)1 1 (0/ 54) (0/ 18) (0/ 18)

Co-60 (72) 4.71 -1 15 9.3B -1 3.31 -1 (0) -3.2 - 5.3)B 0 -2.3 - 5.3)B 0 ( -3.8 - 3.7)E 0 (0/ 54) (0/ 18) (0/ 18)

Zn-65 (72) -1.91 0 09 -5.81 -1 -2.2E 0 (0) -1.3 - 2.1)1 1 -1.2 - 2.1)B 1 ( -7.2 - 4.2)B 0 (0/ 54) (0/ 18) (0/ 18)

Se.75 (72) 2.61 -1 23 6.9Z -1 4.31 -1 (0) -4.4 - 4.0)1 0 -2.4 - 4.0)E 0 ( -3.5 - 3.0)E 0 (0/ 54) (0/ 18) (0/ 18)

Zr-95 (72) 6.51 -1 20 1.91 0 1.9B 0 (0) -7.6 - 8.6)1 0 ( -2.4 - 4.9)B 0 -2.4 - 4.9)B 0 (0/ 54) (0/ 18) (0/ 18)

Ru- 103 (72) -9.2E -1 09 -5.61 -1 -7.81 -1 (0) -5.7 - 4.0)B 0 ( -4.0 - 4.0)Z 0 -4.3 - 2.0)E 0 (0/ 54) (0/ 18) 10/ 18)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

"The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Milk (TM) UNITS: pCi/ka Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected") (No. Detected-) (No. Detected")

Ru-I06 (72) -9.6e -1 20 3.11 0 3.1e 0 (0) -3.2 - 3.7)1B 1 ( -1.9 - 2.7)9 1 -1.9 - 2.7)9 1 (0/ 54) (0/ 18) (0/ 18)

Ag-108m (72) 6.11 -2 20 7.1B -1 7.12 -1 (0) -1.6 - 2.0)Z 0 ( -8.7 - 36.0)e -1 -8.7 - 36.0)1-1 . 1 (0/ 54) (O/ 18) (0/ 18)

Ag-10m (72) 8.31 -2 23 5.91 -1 -4.41 -1 (0) -9.2 - 5.6)R 0 ( -9.2 - 5.6)B 0 -4.9 - 4.6)Z 0 (0/ 54) (0/ 18) (0/ 18)

Sb-124 (72) 1.21 0 09 2.31 0 -3.91 -2 (0) -7.9 - 11.7)B 0 -6.7 - 11.7)1 0 -8.4 - 8.0)e 0 Sb-125 (72) 5.61 -3 (0/ 54) 09 7.8B -1

-6.6 (O/ 18)

- 7.7)E 0

-6.21 -1 (O/ 18)

-1.3 - 1.2)E 1 V

(0) -8.2 - 7.8)1 0 (0/ 54) (O/ 18) (0/ 18) 1-131 (72)

(0) 1 2.3e -2

-1.9 - 5.1)B -1 (0/ 54) 23 4.81 -2

-1.4 - 5.1)1 (O/

-1 18) 3.61 -2

-2.0 - 4.3)1 -1 (0/ 18)

L Cs-134 (72) 15 5.41 -1 09 6.91 -1 6.71 -2 (0) -7.4 - 4.1)1 0 -7.4 - 3.5)1 0 -4.7 - 3.8)1 0 (0/ 54) (0/ 18) (0/ 18)

Cs-137 (72) 18 3.8B -1 09 8.01 -1 6.41 -1 (0) ( -3.5 - 4.9)B 0 -3.1 - 4.9)E 0 -2.3 - 3.5)1 0 (0/ 54) (0/ 18) (0/ 18)

Ba-140 (72) 15 2.4Z -1 09 1.31 0 -1.21 0 (0) -5.8 - 6.6)z o (0/ 54)

-2.4 - 5.6)E 0 (0/ 18)

-4.7 - 1.9)1 0 (0/ 18) U Ce-141 (72)

(0)

-9.21 -1

-1.0 - 0.6)z 1 (0/ 54) 23 2.8e -2

-5.2 - 4.6)E 0 (O/ 18)

-1.21 0

-8.7 - 3.5)E 0 (0/ 18)

I1 Ce-I44 (72) -8.l -1 09 1.8e 0 -3.oe -1 (0) -2.9 - 1.5)E 1 -1.3 - 0.9)E 1 -1.8 - 1.0)E 1 (0/ 54) (O/ 18) (0/ 18)

Th-232 (72) 2.5E 0 09 5.01 0 1.7E 0 (0) -1.5 - 1.4)B 1 -7.7 - 13.6)R 0 -1.4 - 1.9)E 1 (0/ 54) (0/ 18) (0/ 18)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown In parentheses.

3.4 Surface Water Surface water (seawater) grab samples are required at two locations (control and indicator) monthly. The indicator (01) is over the vicinity of the plant discharge. The control location (51') is located in Ipswich Bay, MA. A gamma analysis is performed on each sample. A tritium analysis is performed on the quarterly composite of these samples.

For the year, 24-gamma analyses were performed on surface water samples. The only radionuclide detected in 2005 was naturally occurring K-40. No plant related nuclides were detected. The present data for gamma emitters in seawater is consistent with that of the pre-operational program and previous years of operations. Therefore, no increasing or decreasing trends were observed.

Quarterly composites from the same gamma collection samples were analyzed for tritium. Eight samples were analyzed in 2005. The monthly composites showed no presence of tritium. The Composites met the required LLD (3000 pCi/kg) for tritium in seawater. These results are consistent with pre-operational tritium data.

The calculated dose, as the result of plant effluents is not evaluated due to the fact that no plant related radionuclides were or have been detected. Therefore, no increasing or decreasing treids in dose were observed. This sampling program demonstrates that there is no impact to the public or environment, through this pathway, from plant operations.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

Radiological Environmental Program Summary I!

Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Sea Water (WS) UNITS: PCl/ka Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine-) LLD (No. Detected") (No. Detected") (No. Detected")

H-3 (8) 3000 -1.1 2 51 -1.0 2 -1.OE 2 (0) ( -2.7 - 2.9)B 2 ( -4.9 - 2.2)1 2 -4.9 - 2.2)E 2 (0/ 4) (0/ 4) (0/ 4)

Be-7 (24) 9.6Z -1 01 9.61 -1 -1.81 0 (0) ( -2.0 - 2.5)E 1 ( -2.0 - 2.5)1 1 -1.S - 1.6)1 1 (O/ 12) (0/ 12) (0/ 12)

K.40 (24) 2.81 2 01 2.8Z 2 2.61 2 (0) 2.2 - 3.1)B 2 ( 2.2 - 3.1)E 2 1.2 - 3.5)B 2 (12/ 12) (12/ 12) (12/ 12)

Cr-51 (24) -3.31 -1 51 9.21 -1 9.21 -1 (0) -4.7 - 2.9)1 1 (-1.7 - 1.5)1 1 -1.7 - 1.5)1 1 (0/ 12) (0/ 12) (0/ 12)

Mn-54 (24) 15 -6.01 -1 -1.31 -1 -1.31 -1

-4.0 - 2.4)E 0 - 2.7)E 0 U

(0) (-1.0 -1.0 - 2.7)z 0 (0/ 12) (0/ 12) (0/ 12)

Co-57 (24) 5.11 -1 01 5.1B -1 -3.O1 -1 (0) -6.1 - 19.0)E (0/ 12)

-1 -6.1 - 19.0)e -1 (0/ 12)

-1.5 - 1.1)E 0 (0/ 12) Li Co-58 (24) 1S -4.5Z -1 51 -5.4Z -2 -5.41 -2 Fe-59 (0)

(24) 30

-2.3 - 2.2)B 0 1.41 0 (0/ 12) 01

-2.5 1.4Z 0

- 3.1)B 0 (0/ 12)

-2.5 -

1.31 0 3.1)E 0 (0/ 12) Li (0) -5.5 - 7.1)B 0 7.1)E 0 ( -7.8 - 11.6)B 0 U

-5.5 -

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

Co-60 (24) 15 1.5Z -1 51 7.81 -1 7.8E -1 (0) -2.8 - 2.6)Z 0 -5.0 - 28.0)B -1 -5.0 - 28.0)E -1 Zn-65 (24)

(0) 30 1.O

-1.9 -

0 (0/

1.1)Z 1 12) 01 1.OZ 0 (0/

-1.9 - 1.1)E 12) 1

-7.41 -1 (0/ 12)

-3.5 - 4.4)1 0 LI (0/ 12) (0/ 12) (0/ 12)

Se-75 (24) 3.3Z -1 51 7.61 -1 7.61 -1 (0) -2.4 - 3.7)Z 0 -2.8 - 3.5)1 0 3.5)1 0 (0/ 12) (0/ 12)

-2.8 -

(0/ 12)

'7 Zr.95 (24) 15 5.2Z -1 51 9.51 -1 9.51 -1 (0) -9.9 - 5.5)E 0 -3.2 - 6.5)B 0 -3.2 - 6.5)E 0 (0/ 12) (0/ 12) (0/ 12) i

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3. L

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

i 1 Radlogos;ical Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Sea Water (WS) UNITS: pCI/ko Indicator Stations Station With Highest Mean Control Stations Radionulides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected") (No. Detected-) (No. Detected")

Ru-103 (24) -1.6B 0 01 -1.6Z 0 -1.63 0 (0) -5.7 - 1.0)B 0 I -5.7 - 1.0)8 0 -4.5 - 2.3)3 0 (0/ 12) (0/ 12) (0/ 12)

Ru-I06 (24) -2.5Z 0 51 1.83 0 1.8B 0 (0) -2.4 - 3.2)8 1 -2.6 - 1.8)B 1 -2.6 - 1.8)E 1 (0/ 12) (0/ 12) (0/ 12)

Ag-108nm (24) -6.63 -1 51 4.93 -1 4.93 -1 (0) -1.8 - 0.4)B 0 -1.3 - 3.0)B 0 -1.3 - 3.0)E 0 (0/ 12) (0/ 12) (0/ 12)

Ag-Il1ni (24) 1.83 -1 01 1.83 -1 -2.53 -1 (0) -2.8 - 3.0)Z 0 -2.8 - 3.0)B 0 -3.4 - 2.1)E 0 (0/ 12) (0/ 12) (0/ 12)

Sb-I24 (24) -9.2B -2 01 -9.23 -2 -1.13 0 (0) -3.0 - 2.6)B 0 -3.0 - 2.6)B 0 -5.9 - 4.9)E 0 (0/ 12) (0/ 12) (0/ 12)

Sb-125 (24) -1.43 0 51 1.43 0 1.43 0 (0) -5.9 - 2.7)8 0 -2.4 - 5.9)E 0 -2.4 - 5.9)E 0 (0/ 12) (0/ 12) (0/ 12) 1-131 (24) 15 -4.2Z -2 51 1.13 0 1.13 0 (0) -5.1 - 4.6)B 0 -5.2 - 5.6)B 0 -5.2 - 5.6)E 0 (0/ 12) (0/ 12) (0/ 12)

Cs-I34 (24) 15 7.33 -1 01 7.33 -1 5.73 -1 (0) -1.0 - 3.4)B 0 ( -1.0 - 3.4)B 0 -1.4 - 2.0)E 0 (0/ 12) (0/ 12) (0/ 12)

Cs-137 (24) 18 -4.0 -2 01 -4.O3 -2 -5.33 -1 (0) -1.5 - 1.5)3 0 -1.5 - 1.5)X 0 -3.1 - 0.8)F 0 (0/ 12) (0/ 12) (0/ 12)

Ba-I40 (24) 15 -2.33 -1 51 5.33 -1 5.33 -1 (0) -4.0 - 4.2)3 0 -5.1 - 6.5)3 O -5.1 - 6.5)3 0 (0/ 12) (0/ 12) 1.0/ 12)

Ce-141 (24) 3.33 -1 01 3.33 -1 -7.83 -2 (0) -4.4 - 5.9)3 0 -4.4 - 5.9)B 0 -8.1 - 5.5)K 0 (0/ 12) (0/ 12) 10/ 12)

Ce-44 (24) -3.13 0 51 -1.2B 0 -1.23 0 (0) -1.9 - 0.8)3 1 -1.1 - 0.4)B 1 -1.1 - C.4)B 1 (0/ 12) (0/ 12) O0/ 12)

Th-232 (24) -1.93 0 51 -6.03 -1 -6.03 -2 (0) -8.5 - 1.9)B 0 -5.7 - 8.4)B 0 -5.7 - E.4)B 0 (0/ 12) (0/ 12) - 0/ 12)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

3.5 Ground Water There is no requirement in the ODCM to collect ground water samples. For the year, four quarterly ground water samples were collected from two locations. Samples were analyzed for gross-beta activity, gamma-emitters and tritium. These samples were collected from the drinking water line supplied to the Site (by the Town of Seabrook) and from an inactive well located approximately 1 km North of the plant.

Gross beta activity detected in all eight samples taken is due to naturally occurring radium and its (laughter products. The gross beta activity seen at both locations is similar to what was seen in the pre-operational program and is consistent with results from previous years of commercial operations. Figures 3.5 and 3.5.1 indicate the current year (2005) and the long-term measurement history for gross beta in well waters. No tritium or gamma emitters were detected.

rhe calculated dose is not evaluated due to the fact that plant related radionuclides have not been detected. Therefore no increasing or decreasing trends were observed. There is no impact to the public, through this pathway, from plant operations.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

FIGURE 3.5 GROSS-BETA MEASUREMENTS OF GROUND WATER SEABROOK STATION 20 4 20 I 18 -18 16 - 16 I 14 - 14 12 - 12 I 0 10*

0.

10 8 -8 I 6 4

t I I +4 I 2 0

t

+L 2 0

Jan Feb Mar Apr May Jun Jul Aug Sep I

Oct Nov Dec 2005 I -- WG-01 Seabrook Town Wells

-x- WG-1 3 Seabrook Station Well No. 13 I

I I

FIGURE 3.5.1 GROSS-BETA MEASUREMENTS OF GROUND WATER SEMI-ANNUAL AVERAGES SEABROOK STATION 20 20 15 T

.- '1 0, 10 5 5 0 ~vr--~ 0 le N* le Iqq 1, Ag, 4,1 oq , 14, 1 ,4,g, OP ,,q Ie Ie ,e I g

-X-WG-01 Seabrook Town Wells WG-1 3 Seabrook Station Well No. 13 cln

L Radiological Environmental Program Summary L Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Ground Water (WGI UNITS: oCI/liter Indicator Stations Station With Highest Mean Control Stations Radionuclices Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routiner) LLD (No. Detected") (No. Detected") (No. Detected")

GR-B (8) 4 5.1E 0 01 5.93 0 NO DATA (0) 1.4 - 7.7)B 0 ( 2.6 - 7.7)B 0 (6/ 8) (3/ 4)

H-3 (8) 3000 1.03 2 13 1.8E 2 NO DATA (0) -5.5 - 6.2)3 2 ( -2.6 - 6.2)B 2 (0/ 8) (0/ 4)

Be-7 (8) 1.9E 0 13 1.03 1 NO DATA (0) -1.1 - 2.1)B 1 ( 5.0 - 210.0)E -1 (0/ 8) (0/ 4)

K-40 (8) -4.6E 0 13 -5.03 -1 Na DATA (0) -3.3 - 2.4)B 1 ( -3.3 - 2.4)3 1 (0/ 8) (0/ 4)

Cr-51 (8) 4.2B 0 13 6.23 0 NO DATA (0) -2.8 - 17.0)3 0 -2.0 - 17.0)3 0 (0/ 8) (0/ 4)

Mn-54 (8) 15 -3.33 -1 01 1.63 -1 NO DATA (0) -2.3 - 1.5)B 0 -5.6 - 15.0)E -1 (0/ 8) (0/ 4)

Co-57 (8) 4.13 -2 01 4.43 -1 NO DATA (0) -1.1 - 1.6)B 0 -2.6 - 15.6)B -1 (0/ 8) (0/ 4)

Co-58 (8) 15 -5.73 -1 13 -4.3Z -1 NO DATA (0) -2.0 - 0.6)3 0 ( -2.0 - 0.4)3 0 (0/ 8) (0/ 4)

Fe-59 (8) 30 -5.53 -1 01 2.0E -1 NO DATA (0) -6.1 - 3.3)B 0 ( -6.1 - 3.3)B 0 (0/ 8) (0/ 4)

Co60 (8) 15 3.73 -1 13 5.63 -1 NO DATA (0) -9.0 - 14.0)E -1 ( -4.0 - 14.0)B -1 (0/ 8) (0/ 4)

Zn-65 (8) 30 -1.13 0 13 -4.73 -1 NO DATA (0) -6.9 - 1.8)3 0 -1.9 - 1.8)E 0 (0/ 8) (0/ 4)

Se-75 (8) -3.23 -1 13 9.53 -2 NO DATA (0) -2.1 - 2.9)B 0 -2.1 - 2.9)E 0 (0/ 8) (0/ 4)

Zr-95 (8) 15 -6.63 -1 13 7.53 -2 NO DATA (0) -5.3 - 2.7)B 0 -1.6 - 1.9)3 0 (0/ 8) (0/ 4)

Ru- 103 (8) -1.13 0 01 -9.73 -1 NO DATA (0) -3.1 - 2.1)Z 0 -3.1 - 2.1)B 0 (0/ 8) (0/ 4)

Non-Rout ne refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown in parentheses.

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Ground Water (WG) UNITS: PCi/liter Li Indicator Stations Station With Highest Mean Control Stations Radionucdides Mean StaUon Mean Mean (No. Analyses) Required Range Range Range (Non-Routine') LLD (No. Detected") (No. Detected") (No. Detected-*)

Ru-106 (8) 3.3E 0 01 3.4E 0 NO DATA (0) -4.7 - 16.0)E 0 -4.7 - 11.0)E 0 (0/ 8) (0/ 4)

Ag-108m (8) -4.6B -1 13 -3.23 -1 NO DATA (0) -2.1 - 0.9)E 0 -2.1 - 0.9)Z 0 (0/ 8) (0/ 4)

Ag-110m (8) 3.91 -1 13 1.6E 0 NO DATA (0) -1.7 - 3.7)E 0 -4.0 - 37.0)E -1 (0/ 8) (0/ 4)

Sb-124 (8) 1.0Z 0 01 2.33 0 NO DATA (0) -2.8 - 3.2)E 0 6.0 - 32.0)3 -1 (0/ 8) (0/ 4)

Sb-125 (8) -1.4Z 0 01 -1.4E 0 NO DATA (0) -5.8 - 2.4)E 0 (-5.8 - 0.8)R 0 (0/ 8) (0/ 4) 1-131 (8) 15 8.4Z -1 13 1.3E 0 NO DATA (0) -3.0 - 8.0)E 0 ( 7.0 - 20.0)E -1 (0/ 8) (0/ 4)

Cs-1 34 (8) 15 1.13 -1 01 3.4E -1 NO DATA (0) -9.0 - 12.0)B -1 (-2.0 - 12.0)E -1 (0/ 8) (0/ 4)

Cs-137 (8) 18 -9.53 -2 13 8.93 -1 NO DATA (0) -2.2 - 2.0)E 0 I 2.0 - 20.0)E -1 (0/ 8) (0/ 4)

Ba-140 (8) 15 -8.81 -1 01 4.5E -1 NO DATA (0) -3.1 - 1.0)E 0 (-4.0 - 10.0)Z -1 (0/ 8) (0/ 4)

Ce-141 (8) -3.31 -1 13 1.1 0 NO DATA (0) -4.3 - 2.9)B 0 ( 0.0 - 2.9)B 0 (0/ 8) (0/ 4)

Ce-44 (8) -2.1E 0 01 -2.01 0 NO DATA (0) -6.8 - 1.4)Z 0 -6.8 - 1.0)Z 0 (0/ 8) (0/ 4)

Th-232 (8) 5.63 0 01 5.7E 0 NO DATA (0) 1.9 - 14.6)B 0 (0/ 8)

( 1.9 - 12.5)E 0 (0/ 4) H1

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

-The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

3.6 Sediment L Semiannual sediment sampling is required at one indicator location, although a total of five locations, three indicators and two controls, are collected. The indicator stations are comprised of two beach sediment cores from Seabrook Beach and one sub tidal sediment core taken from near the discharge structure. The control locations, both beach and sub tidal, are located within Ipswich Harbor. A total of 30 samples were collected for the year from all locations. Each sediment core was sectioned into 5-centimeter segments. Segment 1 extends from the top of the core to 5 centimeters, segment two extends from 5 to 10 centimeters and the third segment L: extends from 10 to 15 centimeters in depth. A gamma analysis was performed on each segment.

The only radionuclides detected in 2005 were naturally occurring K-40 and Th-232 with its natural daughters. Potassium-40 was detected in all core samples at all depths from all locations.

Thorium-232 (as measured in the gamma isotopic analysis as AcTh-228) and its daughters were Li also present in all but one sample. No plant related radionuclides were detected in any segment.

No increasing or decreasing trends were observed. This is consistent with the pre-operational program and with previous years of plant operations. There is no dose to the public or impaci to the environment from any pathways associated with this media.

U rconcentrations, Any sample collection and analysis deviations from the ODCM required program, or reportablD that may have occurred during the year are described in Section 4.

U L

UJ H

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Sediment (SE) UNITS: DCI/ka I 1 L..J Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean I (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected*) (No. Detected-) (No. Detected")

Be-7 (30) 5.1B 1 57 7.31 1 2.61 1 (0) -9.8 - 45.0)E 1 (-2.0 - 22.0)Z1 -2.5 - 2.2)Z 2 (0/ 18) I (0/ 6) (0/ 12)

K-40 (30) 1.7B 4 08 2.1 4 1.21 4 L (0) 1.2 - 2.2)E 4 ( 1.7 - 2.2)E 4 1.0 - 1.4)1 4 (18/ 18) (6/ 6) (12/ 12) I I Cr-5i (30) 2.42 1 07 7.01 1 -9.11 1 (0) -3.7 - 2.4)8 2 (-5.0 - 24.0)1 1 -2.9 - 0.9)1 2 (0/ 18) (0/ 6) (0/ 12)

Mn.54 (30) 3.01 0 52 2.0Z 1 2.61 0 II (0) -2.3 - 2.6)B 1 ( 7.0 - 28.0)1 0 -3.9 - 2.8)E1 (0/ 18) (0/ 6) (0/ 12)

Co-57 (30) -3.91 0 08 1.1E 0 -2.81 0 (0) -3.3 - 2.8)Z1 (-1.0 - 2.8)E 1 -2.5 - 0.8)E1 (0/ 18) (0/ 6) (0/ 12)

Co-58 (30) -5.61 0 08 -3.71 0 -1.1Z 1 (0) -2.4 - 2.5)Z1 (0/ 18)

(-2.3 - 2.5): 1 (0/ 6)

-4.2 - 1.9)E 1 (0/ 12) L Fe-59 (30) -5.3Z 0 08 3.0B1 -8.9Z 0 Co-60 (0)

(30)

-9.0 - 13.8)1 1 8.11 0 (0/ 18) 08

(-9.0 1.2Z1

- 13.8)E 1 (0/ 6)

-6.4

-9.51 0

4.7)Z (0/

1

12) L

-9.0 - 27.0)E 0 H

(0) ( 0.0 - 2.5)E1 -3.6 - 1.2)E 1 (0/ 18) (0/ 6) (0/ 12)

Zn-65 (30) -2.41 1 52 -7.31 0 -2.0E 1 (0) -1.5 - 0.8)Z 2 (-8.0 - 9.4) 1 -1.4 - 0.9)Z 2 Se-75 (30) -4.6Z 0 (0/ 18)

-2.5 - 1.6)1 1 57

(

7.21 0 0.0 -

(0/ 6) 1.9)1 1

-4.7Z 0

-7.1 -

(0/ 12) 1.9)1 1 L

(0)

(0/ 18)

Li (0/ 6) (0/ 12)

Zr-95 (30) -3.71 0 02 2.5Z 1 5.61 0 (0) -7.3 - 6.2)B 1 ( 6.0 - 62.0) 0 -5.0 - 7.1): 1 (0/ 18) (0/ 6) (0/ 12)

Ru- 103 (30)

(0)

-3.21

-4.0 -

0 5.0)Z1 (0/ 18) 08 4.8Z 0

(-1.0 - 5.0)Z1 (0/ 6)

-4.4Z 0

-2.9 - 2.2)E1 (0/ 12)

Ll L

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

"The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

I

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Sediment (SE) UNITS: oCI/ka Indicator Stations Station With Highest Mean Control Statiois Radionucdides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine-) LLD (No. Detected**) (No. Detected") (No. Detected-)

Ru-106 (30) -4.1B 1 02 1.41 1 -2.22 1 (0) -3.0 - 2.0)B 2 -1.1 - 2.0)B 2 -4.7 - 2.5)E 2 (0/ 18) (0/ 6) (0/ 12)

Ag-l08o (30) -3.83 0 52 1.51 0 -4.11 0 (0) -3.0 - 1.7)3 1 -1.0 - 3.2)Z 1 -1.8 - 3.2)3 1 (0/ 18) (0/ 6) (0/ 12)

Ag-110rn (30) S.81 0 08 1.41 1 2.03 0 (0) -2.7 - 2.9)1 1 2.0 - 29.0)B 0 -3.2 - 2.6)E 1 (0/ 18) (0/ 6) (0/ 12)

Sb-124 (30) 1.51 1 07 1.81 1 -8.3Z 0 (0) -4.0 - 9.0)1 1 -1.3 - 9.0)1 1 -5.4 - 5.1)E 1 (0/ 18) (0/ 6) (0/ 12)

Sb-125 (30) 5.01 -1 07 2.01 1 -2.23 0 (0) -1.0 - 0.6)Z 2 -2.2 - 5.4)B 1 -5.7 - 5.2)E 1 (0/ 18) (0/ 6) (0/ 12)

I-131 (30) 6.7B 1 07 1.91 2 2.33 1 (0) -4.0 - 6.2)1 2 -3.8 - 62.0)1 1 -1.5 - 2.5)E 2 (0/ 18) (0/ 6) (1/ 12)

Cs-134 (30) 150 -4.31 0 57 1.6R 1 9.53 0 (0) -4.4 - 5.7)1 1 -1.0 - 8.9)8 1 -1.0 - 8.9)E 1 (0/ 18) (0/ 6) IO/ 12)

Cs4137 (30) 180 -3.01 0 07 -1.21 0 -1.2Z 1 (0) -3.1 - 2.0)B 1 -9.0 - 9.0)1 0 -4.4 - 0.3)E 1 (0/ 18) (0/ 6) IO/ 12)

Ba-140 (30) -1. 63 1 52 1.31 2 4.0z 1 (0) -9.0 - 5.6)Z 2 -1.6 - 4.0)Z 2 -1.6 - 4.0)E 2 (0/ 18) (0/ 6) 1.O/ 12)

Ce-141 (30) 8.01 0 52 5.61 1 3.43 1 (0) -1.1 - 0.7)B 2 1.0 - 116.0)E 0 -3.3 - 21.6)Z 1 (0/ 19) (0/ 6) .0/ 12)

Ce-44 (30) -1.61 1 57 8.71 0 -1.23 0 (0) -2.2 - 2.6)Z 2 -8.2 - 7.9)1 1 -1.0 - 3.8)1 2 (0/ 18) (0/ 6) -:0/ 12)

Th-232 (30) 6.21 2 52 1.51 3 9.13 2 (0) ( 2.0 - 18.7)3 2 ( 6.8 - 28.1)3 2 ( 2.4 - 28.1)E 2 (17/ 18) (6/ 6) (12/ 12)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

L L 3.7 Fish LI Semiannual fish and invertebrate samples are required from two locations. The Program cal s for samples to be collected semiannually, or in season, from two locations. Quarterly collections are attempted to cover the sampling requirements. This section presents the results for fish sampling only. Invertebrate results may be found in Sections 3.8 and 3.9, entitled Lobsters and Shellfish, L respectively.

L During the year, 8-fish samples were collected. The fish species available from Station FH-03 (indicator station) and Station FH-53 (control station) was Winter Flounder, Skate and Hake.

A gamma analysis was performed on each sample collected. In 2005, the only radionuclide detected in fish samples was naturally occurring K-40. No plant related radionuclides were detected. No increasing or decreasing trends were observed. Subsequently, there is no dose to the public or impact to the environment, through this pathway, from plant operations. This is consistent with previous years of plant operations, as well as the pre-operational program.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH LI (January - December 2005)

MEDIUM: Fish (FH) UNITS: PCI/ka L

Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected**) (No. Detected") (No. Detected")

Be-7 (8) -5.3B 1 53 3.3B 1 3.3Z I (0) ( -1.0 - -0.1)B 2 ( -3.0 - 19.0)3 1 ( -3.0 - 19.0)Z I (0/ 4) (0/ 4) (0/ 4)

K.40 (8) 3.2B 3 03 3.23 3 2.73 3 (0) ( 2.8 - 3.8)3 3 2.8 - 3.8)B 3 1.2 - 3.9)B 3 (4/ 4) (4/ 4) (4/ 4)

Cr-51 (8) -4.93 1 53 5.33 1 5.33 1 J (0) ( -1.3 - 0.5)8 2 -1.8 - 3.2)B 2 -1.8 - 3.2)B 2 (0/ 4) (0/ 4) (0/ 4)

Mn-54 (8) 130 3.1Z 0 03 3.1E 0 (0) ( -2.0 - 8.5)Z 0 -2.0 - 8.5)B 0 -3.3 - 0.6)B 1 (0/ 4) (0/ 4) (0/ 4)

Co-57 (8) 1.73 -1 03 1.73 -1 -3.4z 0 (0) ( -5.7 - 8.2)8 0 (0/ 4)

-5.7 - 8.2)B 0 (0/ 4)

-1.7 - 0.2)E 1 (0/ 4) j Co-58 (8) 130 -7.8Z 0 53 5.03 0 5.03 0 (0) -2.9 - 1.6)3 1 (0/ 4)

-1.6 - 2.2)Z 1 (0/ 4)

-1.6 - 2.2)B 1 (0/ 4) L Fe-59 (8) 260 -1.43 1 53 3.5B 1 3.5B 1 Co-60 (0)

(8) 130

( -3.9 -

1.5B 0 3.1)3 1 (0/ 4) 03

-2.7 - l1.1)B 1.53 0 (0/ 4) 1 -2.7 -

-1.28 1 l1.1)B (0/ 4)

I L

( -3.0 - 5.0)Z 0 L

(O) ( -3.0 - 5.0)B 0 -2.7 - -0.4)B 1 (0/ 4) (0/ 4) (0/ 4)

Zn-65 (8) 260 9.0B 0 03 9.03 0 -2.8B 1 (0) ( -1.4 - 3.8)B 1 -1.4 - 3.8)Z 1 -1.4 - 0.5)B 2 (0/ 4) (0/ 4) (0/ 4)

Se-75 (8) -5.13 0 03 -5.13 0 -1.13 I L (0) ( -2.8 - 0.7)B 1 -2.8 - 0.7)E 1 -1.8 - O.O)B 1 (0/ 4) (0/ 4) (0/ 4)

Zr-95 (8)

(0) 7.5B 0

( -2.6 - 5.9)3 1 03 7.5Z 0

-2.6 - 5.9)Z 1

-1.53 I

-3.9 - 1.1)3 1 Li (0/ 4) (0/ 4) (0/ 4)

Ru-1 03 (8)

(0) 1.9B 1 3.0 - 35.0)B 0 (0/ 4) 03 1.93 1 3.0 - 35.0)E 0 (0/ 4)

-4.51 0

-1.7 - 1.3)B 1 (0/ 4)

L

, )

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3. Li

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

i ii

L Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

L MEDIUM: Fish (FH)

Indicator Stations UNITS: pCifka Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Rou~tne') LLD (No. Detected") (No. Detected") (No. Detected"*)

Ru-106 (8) -1.0E 1 03 -1.O 1 -6.51 1 (0) -6.0 - 6.4)B 1 -6.0 - 6.4)B 1 -3.3 - 1.2)B 2 (0/ 4) (0/ 4) IO/ 4)

Ag-108m (8) -1.8B 0 53 2.5B -2 2.51 -2 (0) -1.2 - 1.0) 1 -3.9 - 4.0)Z 0 -3.9 - 4.0)Z 0 (0/ 4) (0/ 4) (0/ 4)

Ag-110m (8) 2.0B 0 53 7.8B 0 7.8B 0 (0) -1.0 - 1.7)B 1 -2.4 - 2.5)1 1 -2.4 - 2.5)B 1 (0/ 4) (0/ 4) (0/ 4)

Sb-124 (8) -1.7B 1 53 2.5S -1 2.5B -1 (0) -2.7 - -0.8)B 1 -3.3 - 4.0)1 1 -3.3 - 4.0)Z 1 (0/ 4) (0/ 4) .0/ 4)

Sb-125 (8) -3.31 0 53 2.8B 1 2.81 1 (0) -4.9 - 2.8)E 1 -1.2 - 8.1)B 1 -1.2 - 8.1)E 1 (O/ 4) (0/ 4) -0/ 4) 1-131 (8) -4.5B 0 03 -4.51 0 -3.01 1 (0) -2.0 - 0.2)B 1 -2.0 - 0.2)B 1 -5.0 - -L.2)8 1 (0/ 4) (0/ 4) I0/ 4)

Cs-134 (8) 130 -1.1Z 1 53 -6.5Z 0 -6.51 0 (0) -1.4 - -0.7)B 1 -3.1 - 1.0)1 1 -3.1 - 1.O)E 1 (0/ 4) (0/ 4) (0/ 4)

Cs-137 (8) 150 -1.8B 1 53 -4.31 0 -4.31 0 (0) ( -4.5 - -0.4)B 1 -2.1 - 1.3)Z 1 -2.1 - 1.3)E 1 (0/ 4) (0/ 4) (0/ 4)

Ba-140 (8) 3.0B 1 03 3.01 1 -1.8Z 0 (0) ( 6.0 - 78.0)B 0 I 6.0 - 78.0)x 0 -2.2 - 1.5)E 1 (0/ 4) (0/ 4) (O/ 4)

Ce-141 (8) -5.81 0 03 -5.81 0 -9.51 0 (0) (-2.8 - l.O)1 1 I-2.8 - 1.O)Z 1 -1.8 - -0.1)8 1 (0/ 4) (0/ 4) (0/ 4)

Ce-144 (8) -3.11 1 53 2.81 1 2.8Z 1 (0) I-3.9 - -1.3)Z 1 I -1.0 - 44.0)3 0 -1.0 - 44.0)E 0 (0/ 4) (0/ 4) (0/ 4)

Th-232 (8) -3.1Z 1 53 l.O 0 1.01 0 (0) I-5.5 - 0.2)B 1 I -4.5 - 7.3)Z 1 -4.5 - 1.3)1 1 (0/ 4) (0/ 4) (0/ 4)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown In parentheses.

L 3.8 Lobsters Semiannual fish and invertebrate samples were required from two locations. This section provides the results for one type of invertebrate - Homarus americanus (American lobsters).

Fish and other invertebrate results may be found in Sections 3.7 and 3.9, entitled Fish and Shellfish, respectively. Samples were collected from two locations semiannually. Lobsters were collected from an indicator location near the discharge and from a control location within Ipswich Bay. A total of four samples were collected for the year.

A gamma analysis was performed on each sample. The only radionuclide detected in lobster samples in 2005 was naturally occurring K-40. No plant related radionuclides were detected.

Therefore, no increasing or decreasing trends were observed. Subsequently, there is no dose to the public or impact to the environment, from this pathway, from plant operations. This is l consistent with previous years of plant operations as well as the pre-operational program.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

I I Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: American Lobster (HA) UNITS: yCI/ka Indicator Stations Station With Highest Mean Control Stations L

Radionuclides Mean Station Mean Mean (No. Analyses)

(Non-Routine)

Required LLD Range (No. Detected-)

Range (No. Detected**)

Range (No. Detected")

Li Be-7 (4) 9.5B 0 04 9.5Z 0 -8.0Z1 (0) (-1.0 - 1.2)E 2 (-1.0 - 1.2)B 2 (-1.6 - O.O)B 2 (0/ 2) (0/ 2) (0/ 2)

K-40 (4) 2.01 3 54 2.2Z 3 2.2B 3 1.5 - 2.5)B 3 (2.2 - 2.2)Z 3 (2.2 - 2.2)E 3 (0)

(2/ 2) (2/ 2) (2/ 2)

Cr-51 (4) 1.1E 2 04 1.1B 2 6.5Z 1 7.4 - 14.0)E 1 (7.4 - 14.0)3 1 (6.0 - 7.0)Z 1 (0)

(0/ 2) (0/ 2) (0/ 2)

Mn-54 (4) 130 -5.0O 0 54 3.03 0 3.0O 0 (0) -1.3 - 0.3)Z 1 (-8.0 - 14.0)3 0 -8.0 - 14.0)E 0 (0/ 2) (0/ 2) (0/ 2)

Co-57 (4) 2.6B 0 04 2.6Z 0 -3.63 0 (0) ( 2.4 - 2.9)3 0 (2.4 - 2.9)Z 0 -9.0 - 1.7)3 0 (O/2) (0/ 2) (0/ 2)

Co-58 (4) 130 1.6E 1 04 1.6Z 1 1.5E 0 (0) ( 1.5 - 1.6)B 1 (0/ 2)

(1.5 - 1.6)B 1 (0/ 2)

-7.0 - 1O.O)3 0 (0/ 2) L Fe-59 (4) 260 1.53 1 54 4.03 1 4.02 1 (0) ( -7.0 - 36.0)B 0 (0/ 2) 04

(-6.0

-1.13Z

- 85.0)B 0 (0/ 2)

-6.0 - 85.0)3 0

-1.43 1 (0/ 2) L Co-60 (4) 130 -1.1E 1 (0) (-1.3 - -0.9)R 1 (-1.3 - -0.9)2 1 -2.6 - -0.2)E 1 (0/ 2) (0/ 2) (0/ 2)

Zn-65 (4)

(0) 260 -1.23 1

(-2.3 - O.O)Z (0/ 2) 1 04 -1.22 1

(-2.3 - O.O)B 1 (0/ 2)

-9.53 1

(-9.7 - -9.2)Z 1 (0/ 2)

Li Se-75 (4) -1.4Z 1 54 -5.53 0 -5.5B 0 (0) (-2.6 - -0.2)E 1 (-2.9 - 1.8)3 1 -2.9 - 1.8)E 1 (0/ 2) (0/ 2) (0/ 2)

Zr-95 (4) -3.73 1 54 -2.83 1 -2.8E 1 Li (0) (-3.9 - -3.5)E 1 (-4.5 - -1.1)3 1 -4.5 - -1.1)E 1 (0/ 2) (0/ 2) (0/ 2)

Ru-103 (4) -2.0Z 0 04 -2.0o 0 -6.0O 0 (0) (-4.0 - O.O)3 0 ( -4.0 - O.O)2 0 -6.0 - -6.0)Z 0 (0/ 2) (o/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

^ The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

L Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: American Lobster (HA) UNITS: xCI/ka Indicator Stations Station With Highest Mean Control Stations Radionu iides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Ro Jtine*) LLD (No. Detected-) (No. Detected-) (No. Detectedc^)

Ru-106 (4) -5.3B 1 54 6.51 I 6.51 1 (0) -1.1 - 0.0)B 2 6.0 - 7.0)E 1 6.0 - 7.0)X 1 (0/ 2) (0/ 2) (0/ 2)

Ag-108mn (4) -8.2B 0 54 4.51 0 4.51 0 (0) -1.2 - -0.4)1 1 3.0 - 6.0)B 0 3.0 - 6.0)1 0 (0/ 2) (0/ 2) (0/ 2)

Ag-110ni (4) 5.01 -1 04 5.O -1 -9.5E 0 (0) -1.1 - 1.2)B 1 -1.1 - 1.2)1 2 -1.2 - -0.7)B 1 (0/ 2) (0/ 2) (0/ 2)

Sb-124 (4) 1.91 1 54 3.22 1 3.21 1 (0) 1.9 - 1.9)E 1 2.1 - 4.3)E 1 2.1 - 4.3)1 1 (0/ 2) (0/ 2) (0/ 2)

Sb-125 (4) -2.1Z 1 54 -1.21 1 -1.21 1 (0) -2.1 - -2.0)B 1 -4.0 - 1.6)B 1 -4.0 - 1.6)X 1 (0/ 2) (0/ 2) (0/ 2) 1-131 (4) -2.0Z 2 54 7.4B 1 7.41 1 (0) -4.2 - O.1)B 2 -3.3 - 18.0)E 1 -3.3 - 28.0)E 1 (0/ 2) (0/ 2) (0/ 2)

Cs-134 (4) 130 -1.31 1 54 1.13 2 1.1 1 (0) ( -1.9 - -0.8)E 2 7.0 - 14.0)B 0 7.0 - 2.4.0)E 0 (0/ 2) (0/ 2) (0/ 2)

Cs-137 (4) 150 -2.51 0 54 1.9B . 1.9B 1 (0) ( -3.0 - -2.0)B 0 1.6 - 2.1)E 1 ( 1.6 - ;.1)E 1 (0/ 2) (0/ 2) (0/ 2)

Ba-140 (4) 2.15 1 04 2.1B 1 -9.8B 1 (0) ( 7.0 - 35.0)1 0 ( 7.0 - 35.0)1 0 -1.8 - -0.2)E 2 (0/ 2) (0/ 2) (0/ 2)

Ce-141 (4) -2.0B 0 04 -2.05 0 -7.51 0 (0) (-9.0 - 5.0)1 0 ( -9.0 - 5.0)1 0 -1.1 - *0.4)1 1 (0/ 2) (0/ 2) (0/ 2)

Ce-144 (4) 6.31 1 04 6.35 1 4.6Z 1 (0) ( 2.8 - 9.7)B 1 ( 2.8 - 9.7)B 1 ( 2.9 - 4;.2)B 1 (0/ 2) (0/ 2) (0/ 2)

Th-232 (4) -8.71 1 54 -6.0B 0 -6.01 0 (0) (-1.3 - -0.4)B 2 ( -3.7 - 2.5)B 1 -3.7 - :t.5)Z 1 (0/ 2) (0/ 2) (0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

" The fiaction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown In parentheses.

3.9 Shellfish Semiannual fish and invertebrate samples are required from two locations. This section provides the results for shellfish samples only. Fish and other invertebrate results may be found in the!

Sections 3.7 and 3.8, entitled Fish and Lobsters, respectively.

During the year there were two species of mussels harvested for analysis. Modiolus (horse mussels) were collected, by divers, from near the discharge outfall (indicator station) and from Ipswich Bay (control). Mytilus (blue mussels) were collected from the intratidal areas of Seabrook Harbor (indicator) and Plum Island, MA (control). Eight samples were collected for 2005 and analyzed for radioactivity in the edible portion or meat of the shellfish.

In the second collection series of the year (November), mussel shells were also analyzed for Strontium 90 (two samples) to see if there is any indication of strontium uptake into the shell. This sample is not required by the REMP.

The only radionuclide detected in shellfish samples (either edible portion or shell) in 2005 was naturally occurring K-40. No plant related gamma emitting radionuclides or strontium was detected. Therefore, no increasing or decreasing trends were observed. Subsequently, there is no dose to the public or impact to the environment, from this pathway, from plant operations. This is consistent with the pre-operational program and with previous years of plant operations.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

L?

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Mussel Body (MU) UNITS: DCI/ka Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine') LLD (No. Detected-) (No. Detected*') (No. Detected")

Be-7 (8) 8.03 1 09 1.88 2 2.0O 0 (0) -6.3 - 28.0)E 1 7.1 - 28.0)1 1 -1.9 - 0.9)8 2 I (0/ 4) (0/ 2) (0/ 4)

K-40 (8) 1.1l 3 56 1.4B 3 1.28 3 (0) 7.8 - 14.3)B 2 1.3 - 1.6)Z 3 9.2 - 15.5)g 2 (4/ 4) (2/ 2) (4/ 4)

Cr-51 (8) 3.4B 1 06 8.3B 1 2.0B 1 (0) -3.0 - 13.0)B 1 3.5 - 13.0)1 1 -8.0 - 12.0)1 1 (0/ 4) (0/ 2) (0/ 4)

Mn-54 (8) 130 1.58 0 06 4.48 0 -1.08 1 L (0) -5.2 - 14.0)B 0 -5.2 - 14.0)Z 0 -3.7 - 1.6)E 1 (0/ 4) (0/ 2) (0/ 4)

Co-57 (8)

(0)

-1.18 0

-1.0 - 0.7)1 (0/ 4) 06

(

4.53 0 1.5 - 7.4)B 0 (0/ 2)

-3.68 0

-6.8 - 0.9)8 0 (0/ 4)

L Co-58 (8)

(0) 130 -1.28 1

-1.9 - 0.5)Z1 (0/ 4) 59 -5.0O 0

-1.2 - 0.2)3 1 (0/ 2)

-9.08 0

-3.2 - 0.6)3 1 (0/ 4)

L Fe-59 (8) 260 1.3Z 0 06 6.51 0 -1.93 1 (0) -2.7 - 1.9)Z 1 -6.0 - 19.0)1 0 -6.0 - 2.9)E1 (0/ 4) (0/ 2) (0/ 4)

Co.60 (8) 130 -3.81 0 56 2.08 1 8.6 0 (0) -2.0 - 0.7)B1 1.4 - 2.6) 1 -5.0 - 26.0)Z 0 (0/ 4) (0/ 2) (0/ 4)

Zn-65 (8) 260 2.4Z 1 59 3.8Z 1 1.33 1 Se-75 (0)

(8)

-3.1 -8.1)Z

-1.5Z1 (0/ 4) 1 59

-1.1 - 8.6)3 1 5.O -1 (0/ 2)

-2.0 - 8.6)Z 1

-2.21 0 (0/ 4) L (0) -4.6 -0.1)Z 1 -3.0 - 4.0)1 0 -6.7 - 4.0)8 0 Zr-95 (8) -9.53 0 (0/ 4) 06 -5.53 0 (0/ 2)

-1.58 1 (0/ 4)

L (0) -3.4 - 0.7)Z 1 -1.0 -- 0.1)3 -4.7 - 0.3)1 1 Ru-103 (8) O.O 0

-4.0 - 4.0)1 (0/ 4) 0 06 O.1 0

-4.0 -4.0)1 (0/ 2) 0

-1.41 1 (0/ 4)

-3.1 - -0.4)B 1 L

(0)

(0/ 4) (0/ 2) (0/ 4)

Non-Routine refers to those radionudides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

I

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

f iU Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Mussel Body (MU) UNITS: PCi/ka Indicator Stations Station With Highest Mean Control Statiors Radionuc'ides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected") (No. Detected**) (No. Detected"*)

Ru-106 (8) -3.2B 1 56 2.53 0 -2.83 1 (0) -1.1 - 0.7)B 2 ( -4.6 - 5.1)3 1 -1.3 - 0.5)3 2 (0/ 4) (0/ 2) (0/ 4)

Ag-I08m (8) 1.1B 1 09 1.5B 1 -4.43 0 (0) 2.8 - 22.0)B 0 7.6 - 22.0)B 0 -2.2 - 0.6)3 1 (0/ 4) (0/ 2) (0/ 4)

Ag110m (8) -1.32 1 56 -1.0O 0 -3.53 0 (0) -4.2 - -0.3)B 1 -1.8 - 1.6)3 1 -1.8 - 1.6)Z 1 (0/ 4) (0/ 2) (0/ 4)

Sb4124 (8) 2.03 1 09 3.23 1 -2.33 1 (0) -2.0 - 7.9)3 1 -1.5 - 7.9)B 1 -7.2 - 0.7)B 1 (0/ 4) (0/ 2) (0/ 4)

Sb-125 (8) 3.43 1 59 4.13 1 3.23 1 (0) 1.5 - 4.3)3 1 -3.0 - 85.0)E 0 -3.0 - 8!'.0)B 0 (0/ 4) (0/ 2) (0/ 4) 1-131 (8) -4.5B 0 59 4.53 1 2.63 1 (0) -6.4 - 4.4)B 1 7.0 - 82.0)3 0 -2.0 - 8.2)B 1 (0/ 4) (0/ 2) (0/ 4)

Cs-134 (8) 130 -4.52 0 56 -1.83 0 -2.63 0 (0) -8.0 - O.O)B 0 ( -1.1 - 0.7)3 1 (-1.9 - 1.2)3 1 (0/ 4) (0/ 2) (0/ 4)

CsI 37 (8) 150 -6.33 0 09 -3.43 0 -1.O 1 (0) -1.7 - 0.8)B 1 ( -1.5 - 0.8)3 1 -2.0 - 0.1)3 1 (0/ 4) (0/ 2) (0/ 4)

Ba-140 (8) -3.33 0 56 2.2Z 1 1. 1 1 (0) -2.6 - 3.2)B 1 ( 1.8 - 2.5)3 1 -6.0 - 213.0)z 0 (0/ 4) (0/ 2) 1.0/ 4)

Ce-141 (8) -5.33 0 59 1.43 1 7.53 -1 (0) -4.9 - 2.2)B 1 3.0 - 24.0)3 0 -1.7 - 2.4)B 1 (0/ 4) (0/ 2) .0/ 4)

Ce-144 (8) 2.43 1 59 4.53 1 3.8Z 1 (0) -1.0 - 57.0)B 0 3.7 - 5.3)B 1 1.7 - 5.3)B 1 (0/ 4) (0/ 2) '0/ 4)

Th-232 (8) 3.53 0 06 4.03 1 -4.53 0 (0) -3.3 - 6.3)3 1 1.6 - 6.3)B 1 -2.4 - 2.7)3 1 (0/ 4) (0/ 2) 0/ 4)

Non-Roitne refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses U

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH J (January - December 2005)

MEDIUM: Mussel Shell (MS) UNITS: oCI~kg Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected") (No. Detected") (No. Detected")

l I Sr-90 (2) O.O 0 06 O.O 0 -2.21 2 (0)

(0/ 1) (0/ 1) (0/ 1)

U L

LI L

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown In parentheses.

L L

L 3.10 Irish Moss There is no REMP requirement to collect Irish Moss (algae) samples. Semiannual Chondrus (Irish Moss) samples were collected from an indicator area near plant discharge and a control location within Ipswich Bay. If plant related radionuclides were re-concentrating in the aquatic environment, an early indication of this may be shown in this type of environmental species. Four samples (two indicator and two control) were collected for the year.

A gamma analysis was performed on each sample. Naturally occurring Potassium 40 was detected in all samples for both indicator and control stations. No plant related radionuclides were detected. Therefore, no increasing or decreasing trends were observed. Subsequently, there is no dose to the public or impact to the environment, through this pathway, from plant operations.

This is consistent with the pre-operational program and with previous years of plant operations.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Irish Moss (AL) UNITS: PCI/ka Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean I -~

(No. Analyses) Required Range Range Range (Non-Routine') LLD (No. Detected") (No. Detected") (No. Detected")

Be-7 (4) 1.6Z 2 05 1.63 2 4.93 1 I

(0) ( 1.4 - 1.8)E 2 1.4 - 1.8)E 2 0.0 - 9.7)E 1 (0/ 2) (0/ 2) (0/ 2)

'I(

K-40 (4) 8.8E 3 05 8.83 3 5.9Z 3 (0) ( 8.1 - 9.5)B 3 8.1 - 9.5)E 3 5.5 - 6.3)E 3 (2/ 2) (2/ 2) (2/ 2)

Cr-51 (4) -2.8Z 1 55 -1.2E 1 -1.23 1 I

(0) ( -4.5 - -1.0)E 1 -3.0 - 0.7)3 1 -3.0 - 0.7)E 1 Mn-54 (4)

(0) 2.9Z 0 (0/ 2) 1.7 - 4.0)E 0 05 2.9E 0 (0/ 2) 1.7 - 4.0)3 0

-1.63

-2.5 -

1 (0/ 2)

-0.7)E 1 j

(0/ 2) (0/ 2) (0/ 2)

Co-57 (4)

(0)

-3.7E 0

-6.5 - -0.9)8 0 (0/ 2) 55 5.0E -2

-9.0 - 10.0)Z -1 (0/ 2) 5.03 -2

-9.0 - 10.0)E -1 (0/ 2)

L Co-58 (4) 6.9Z 0 05 6.93 0 -1.63 1 (0) 5.0 - 8.8)E 0 5.0 - 8.8)E 0 -2.0 - -1.2)3 1 (0/ 2) (0/ 2) (0/ 2)

Fe-59 (4) -1.53 1 05 -1.53 1 -2.03 1 Co460 (0)

(4)

-4.2 - 1.2)Z 1

-1.89 1 (0/ 2) 55

-4.2 - 1.2)E 1

-9.43 0 (0/ 2)

-5.2

-9.4E 0

- 1.2)3 (0/ 2) 1 U

Zn-65 (0)

(4)

-2.5 - -1.1)Z 1 7.5E 1 (0/ 2) 05

-2.4 - 0.5)E 1 7.5E 1 (0/ 2)

-2.4 -

2.63 1 0.5)3 1 (0/ 2)

L (0) ( 2.9 - 12.1)3 1 2.9 - 12.1)E 1 -1.2 - 6.3)3 1 Se-75 (4) -8.53 -1 (0/ 2)

( -4.8 - 3.1)E 0 05 -8.5Z -1 (0/ 2)

-4.8 - 3.1)E 0

-3.72 0 (0/ 2)

U (0) -6.0 - -1.4)E 0 Zr-95 (4)

(0) 2.2B 1 (0/ 2)

( -6.4 - 51.0)E 0 05 2.23 1 (0/ 2)

( -6.4 - 51.0)3 0

-5.O

-1.3 -

-1 (0/

1.2)3 2) 1 L

(0/ 2) (0/ 2) (0/ 2)

Ru-103 (4)

(0)

-1.5E 2

-3.1 - 0.1)3 1 (0/ 2) 55 -1.3E 1 I -1.6 - -0.9)E 1 (0/ 2)

-1.3Z 1

-1.6 - -0.9)E 1 (0/ 2)

L L

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

'The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown in parentheses.

L-1 I-LU

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Irish Moss (AL) UNITS: PCI/ka Indicator Statons Station With Highest Mean Control Statiors Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine*) LLD (No. Detected-) (No. Detected*) (No. Detected")

Ru-1O6 (4) 4.7B 1 55 7.08 1 7.03 1 (0) -1.6 - 11.0)B I I 0.0 - 1.4)Z 2 0.0 - 1.4)E 2 (0/ 2) (0/ 2) (0/ 2)

Ag-1108m (4) -8.9B 0 55 -1.O -1 -1.0 -1 (0) -1.7 - -0.1)E 1 I -5.1 - 4.9)Z 0 -5.1 - 4.9)E 0 (0/ 2) (0/ 2) (0/ 2)

Ag-10m (4) -7.53 -1 05 -7.5Z -1 -1.93 0 (0) -3.0 - 1.5)3 0 I -3.0 - 1.5)E 0 -6.0 - 2.2)Z 0 (0/ 2) (0/ 2) (0/ 2)

Sb-124 (4) 1.43 1 05 1.4Z 1 -1.7Z 1 (0) -9.5 - 38.0)E 0 -9.5 - 38.0)3 0 (-1.9- -1.5)E 1 (0/ 2) (0/ 2) (O/ 2)

Sb-125 (4) -4.53 0 55 9.53 0 9.53 0 (0) -1.1 - 0.2)E 1 8.0 - 11.0)Z O C 8.0 - 11..O)3 0 (0/ 2) (0/ 2) (0/ 2) 1-131 (4) 2.93 1 55 3.4B 1 3.4B 1-(0) 1.9 - 3.9)B 1 -1.1 - 7.8)E 1 -1.1 - 7..8)E 1 (0/ 2) (0/ 2) (O/ 2)

Cs-134 (4) 60 -4.53 0 55 -1.13 0 -1.1E 0 (0) -1.0 - 0.1)E 1 -6.3 - 4.0)3 0 -6.3 - 4.0)B 0 (0/ 2) (0/ 2) 10/ 2)

Cs- 137 (4) 80 3.1E 0 05 3.1Z 0 4.03 -1 (0) 3.0 - 60.0)E -1 3.0 - 60.0)B -1 -6.0 .8)E 0 (0/ 2) (0/ 2) 10/ 2)

Ba-140 (4) 2.23 1 05 2.2Z 1 8.03 0 (0) -5.0 - 48.0)Z 0 -5.0 - 48.0)B 0 0.0 - 1.6)2 1 (0/ 2) (0/ 2) (O/ 2)

Ce-141 (4) 9.53 -1 05 9.53 -1 -2.53 1 (0) -2.1 - 4.0)E 0 -2.1 - 4.0)Z 0 -4.3 - -0.7)3 1 (0/ 2) (0/ 2) 1.0/2)

Ce-144 (4) 1.23 1 05 1.23 1 -1.33 1 (0) -2.1 - 4.4)E 1 -2.1 - 4.4)3 1 -5.1 - 2.6)Z 1 (0/ 2) (0/ 2) :0/ 2)

Th-232 (4) -2.13 1 55 2.7E 1 2.73 1 (0) -8.5 - 4.4)Z 1 1.0 - 52.0)3 0 1.0 - 52.0)Z 0 (0/ 2) (0/ 2) '0/ 2)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

" The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown in parentheses.

rI L 3.11 Food Crop There is no requirement for food crop samples as long as the required milk locations are L. available. As noted in Section 3.3, milk sampling the minimum required locations in 2005 was; not possible due to the limited inventory of milk animal locations in the site vicinity. To compensate for this, vegetation sample were collected as part of the REMP. Section 3.12 describes the L alternate broad leafy vegetation collections.

In addition to the new broad leafy vegetation sampling, nine food crop samples were collected from three locations during the growing season months (June, July and August). These include L strawberries (June), peas and wax beans (July), and corn (August) samples. For the year, a total of nine food crop samples were collected.

The only radionuclide detected in 2005 was naturally occurring K-40. Potassium 40 was detected at both indicator and control stations sampled. No plant related radionuclides were detected.

Therefore, no increasing or decreasing trends are identified. Subsequently, there is no dose to the public or impact on the environment, through this pathway, from plant operations. This is L consistent with the pre-operational program and with previous years of plant operations.

L L

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH f-.1 (January - December 2005)

MEDIUM: Food Crop (TF) UNITS: DClIka Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean I I (No. Analyses) Required Range Range Range L-;

(Non-Routine*) LLD (No. Detected") (No. Detected") (No. Detected")

Be-7 (9) 6.0E 1 03 1.0 2 -5.61 1 (0) -4.5 - 16.1)E 1 5.1 - 16.1)E 1 -8.9 - 0.4)B 1 (0/ 6) (0/ 3) (0/ 3)

K-40 (9) 1.8B 3 02 2.0Z 3 1.9Z 3 (0) C 1.4 - 2.7)B 3 1.6 - 2.7)B 3 1.0 - 2.3)B 3 (6/ 6) (3/ 3) (3/ 3)

Cr-51 (9)

(0)

-2.3B 1

( -1.8 - 1.0)B 2 03 -2.0B 1

-1.3 - 0.9)E 2

-3.81 1

-9.1 - 6.0)1 1 I1 (0/ 6) (0/ 3) (0/ 3)

Mn-54 (9) -7.9e 0 03 -4.8Z 0 -5.11 0 (0) -2.9 - -0.2)E 1 -7.4 - -1.6)Z 0 -7.5 - -3.7)B 0 (0/ 6) (0/ 3) (0/ 3)

Co-57 (9)

(0) 7.7Z -1

( -1.1 - 1.3)B 1 (0/ 6) 02 4.71 0

-2.5 - 13.3)B 0 (0/ 3) 4.5Z 0 1.0 - 9.8)B 0 (0/ 3)

L Co-58 (9) 1.1 0 02 8.7B 0 -3.51 0 (0) ( -1.4 - 2.0)1 1 (0/ 6)

-1.0 - 20.0)B 0 (0/ 3)

-8.0 - O.O)1 0 (0/ 3) U Fe-59 (9) -3.3B 0 02 2.0E 1 1.3Z 1 (0) (-7.1 - 4.3)B 1 -7.0 - 43.0)B 0 ( 0.0 - 3.2)E 1 (0/ 6) (0/ 3) (0/ 3)

Co-60 (9) -9.72 -1 02 3.89 0 1.61 0

(-8.0 - 14.0)B 0 ( -3.0 - 14.0)1 0 (-7.4 - 7.0)B 0 Zn-65 (0)

(9) -7.5B 0 (0/ 6) 03 1.O 1 (0/ 3) 9.01 0 (0/ 3)

L (0) (-5.5 - 3.2)Z 1 ( -7.0 - 32.0)1 0 (-1.4 - 3.9)B 1 Se-75 (9) -1.71 0 (0/ 6)

-1.8 - 1.6)E 1 03 2.6E 0 I -7.3 (0/ 3)

- 16.0)Z 0 2.4B 0 (0/ 3) 0.0 - 5.0)E 0 LI (0)

(0/ 6) (0/ 3) (0/ 3)

Zr-95 (9)

(0)

-1.7Z -1

-1.7 - 1.6)B 1 03 1.3B 0

( -1.7 - 1.6)B 1

-6.3Z 0

-7.0 - -6.0)Z 0 L

(0/ 6) (0/ 3) (0/ 3)

Ru-103 (9)

(0)

-2.9Z 0

-2.5 - 1.2)B 1 (0/ 6) 06

(

3.61 0 2.7 - 4.1)B 0 (0/ 3) 3.68 0 2.7 - 4.1)1 0 (0/ 3)

L I1

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3. I

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) Is shown in parentheses.

I

Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Food Crop (TF) UNITS: DCl/ka Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine-) LLD (No. Detected**) (No. Detected*) (No. Detected")

Ru-I06 (9) 0.0o 0 02 6.31 1 -5.2B 1 (0) -1.2 - 1.1)B 2 ( 4.0 - 11.02) 1 ( -1.1 - -0.2)1 2 (0/ 6) (0/ 3) IO/ 3)

Ag-108m (9) 5.81 0 03 1.1Z 1 1.1 0 (0) -1.8 - 14.5)B 0 ( 5.1 - 14.5)B 0 ( -2.8 - 5.6)1 0 (0/ 6) (0/ 3) :0/ 3)

Ag-I10m (9) 9.41 0 03 1.5B 1 1.11 1 (0) -6.0 - 16.0)8 0 ( 1.3 - 1.6)B 1 ( -3.0 - 22.0)B 0 (0/ 6) (0/ 3) :0/ 3)

Sb-124 (9) 1.6K 1 02 1.71 1 -1.71 0 (0) -1.1 - 4.S)E 1 ( -1.1 - 4.5)1 1 -2.3 - 3.1)B 1 (O/ 6) (0/ 3) *.0/ 3)

Sb-1 25 (9) 2.2B 0 03 1.31 1 -1.O 1 (0) -2.6 - 3.0)8 1 ( -6.0 - 30.0)1 0 -2.1 - -03.3)B 1 (0/ 6) (0/ 3) -0/ 3) 1-131 (9) 60 7.08 1 03 1.3K 2 1.91 1 (0) -1.4 - 39.0)B 1 -4.0 - 390.0)B 0 ( -1.7 - 4.4)B 1 (0/ 6) (0/ 3) -0/ 3)

Cs-134 (9) 60 1.11 0 02 1.1 1 -2.3E 0 (0) -1.1 - 1.6)B 1 5.2 - 16.0)1 0 ( -3.8 - O.O)1 0 (0/ 6) (0/ 3) (0/ 3)

Cs-I37 (9) 80 -9.2K -1 06 4.91 0 4.9Z 0 (0) -7.0 - 5.1)1 0 -4.3 - 12.9)B 0 ( -4.3 - 12.9)E 0 (0/ 6) (0/ 3) (0/ 3)

Ba-I40 (9) -2.0K 1 02 1.O 1 -9.38 0 (0) -1.7 - 0.2)S 2 0.0 - 2.2)9 1 ( -5.6 - 2.9)g 1 (0/ 6) (0/ 3) (0/ 3)

Ce-141 (9) 5.51 0 02 7.08 0 1.38 -1 (0) -1.1 - 2.2)B 1 -1.1 - 2.2)1 1 ( -5.0 - 7.0)E 0 (0/ 6) (0/ 3) (0/ 3)

Ce-144 (9) 8.81 0 03 2.01 1 -2.4Z 1 (0) -8.0 - 52.0)B 0 -8.0 - 52.0)B 0 ( -7.0 - 4.8)E 1 (0/ 6) (0/ 3) (O/ 3)

Th-232 (9) -1.21 1 06 1.0K 1 1.O 1 (0) -4.9 - 4.2)1 1 -1.0 - 21.0)E 0 ( -1.0 - 21.0)1 0 (0/ 6) (0/ 3) (0/ 3)

Non-Rcutine refers to those radionuclides that exceeded the Reporting Levels in ODCM Table A.9.1-3.

- The friction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses 3.12 Vegetation In lieu of milk sampling, the ODCM, Table A.9.1-1, requires broad leafy vegetation samples grown nearest of two different offsite locations with the highest D/Q, and one control location 15-30 km distant in the least prevalent wind direction, be collected when available (growing season). Offsite locations are defined in the UFSAR as a minimum, the land within a 3000-foot radius of the two reactor building centerlines. The analysis of garden locations in the Land Use Census provides a ranking of potential sampling sites for use in determining sampling locations in the general population. Since sampling of three different types of broad leaf garden vegetables is not feasible due to uncertain availability, other types of broad leafy vegetation were utilized.

Two locations at the site boundary with a maximum D/Q were selected over ranked D/Q gardens in the general population. These two locations in areas with available sample media and are on FPL Energy property. A third far field control location was selected in Georgetown, MA. Sampling tree leaves as broad leaf vegetation at the selected locations provide increased reliability for sample availability. For 2005, monthly (growing season, May through October) broad leaf vegetation samples from the three sites were collected and analyzed.

The only radionuclides detected in 2004 were naturally occurring K-40 and Be-7. Potassium-40 was detected at both indicator and control locations for all samples. Beryllium-7 was detected in all but one sample collected. No plant related radionuclides were detected. Assuming that the results of broad leaf vegetation sampling are comparable to broad leaf food products, there is no detectable dose to the public or impact on the environment through this type pathway from plant operations.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

L Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Veaetatlon (TG) UNITS: DCI/ka wet f-j Indicator Stations Station With Highest Mean Control Stations Radionuclides Mean Station Mean Mean (No. Analyses) Required Range Range Range (Non-Routine') LLD (No. Detected") (No. Detected**) (No. Detected*)

I Be-7 (18) 1.43 3 09 1.4Z 3 1.l1 3 (0) 5.7 - 28.8)E 2 ( 5.8 - 24.3)E 2 4.9 - 19.4)E 2 (11/ 12) (6/ 6) (6/ 6) Ii K-40 (18) 3.1E 3 10 3.4Z 3 3.4B 3 L.J (0) 2.3 - 4.7)E 3 ( 2.2 - 5.3)E 3 2.2 - 5.3)E 3 (12/ 12) (6/ 6) (6/ 6)

I 1 Cr-51 (18) 1.5E 1 09 4.43 1 2.9E 1 (0) -1.1 - 2.2)E 2 (-8.5 - 17.0)3 1 -2.2 - 2.1)E 2 (0/ 12) (0/ 6) (0/ 6)

Mn-54 (18)

(0) 9.23 -1

-2.7 - 2.3)E 1 (0/ 12) 08 5.01 0

(-1.0 - 2.3)Z 1 (0/ 6) 5.2E -1

-2.0 - 1.4)E 1 (0/ 6)

J Co-57 (18) -1.73 0

-1.5 - 1.5)E 1 10 4.0E 0

( -2.2 - 12.3)E 0 4.0E 0

-2.2 - 12.3)Z 0

,I (0)

(0/ 12) (0/ 6) (0/ 6)

Co-58 (18) -2.8E 0 10 2.1E 0 2.13 0 (0) -1.9 - 1.4)E 1 (0/ 12)

-2.9 - 1.5)E 1 (0/ 6)

-2.9 - l.S)E 1 (0/ 6) L Fe-59 (18) 2.0B 1 09 2.2E 1 -1.lE 1 Co-60 (0)

(18)

-1.5 - 5.6)E 1 4.0B -1 (0/ 12) 09

-9.0 - 56.0)3 0 3.03 0 (0/ 6)

-6.7 - 4.5)E 1

-4.6E 0 (0/ 6) L Zn-65 (0)

(18)

-1.3 - 2.3)B 1

-1.5Z 1 (0/ 12) 09

-1.3 - 2.3)E 1

-2.23 0 (0/ 6)

-1.7 - 1.1)E 1

-2.73 1 (0/ 6)

L (0) -6.9 - 2.7)E 1 -2.3 - 2.7)E 1 -7.6 - 1.4)E 1 Se-75 (18) -6.43 -1

(-1.9 (0/ 12)

- 1.1)E 1 10 4.9E 0 (0/

( -1.4 - 3.3)3 1 6) 4.9Z 0 (0/ 6)

-1.4 - 3.3)3 1 L

(0)

(0/ 12) (0/ 6) (0/ 6)

Zr-95 (18) -6.53 0 10 2.3E 0 2.3E 0 L (0) -2.9 - 2.7)3 1 ( -1.6 - 4.3)Z 1 -1.6 - 4.3)E 1 (0/ 12) (0/ 6) (0/ 6)

I ,

Ru-103 (18) 6.13 -1 09 5.81 0 -8.01 0 (0) -2.0 - 3.2)E 1 ( -6.0 - 32.0)E 0 -3.0 - 1.7)3 1 (0/ 12) (0/ 6) (0/ 6) t.J

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown in parentheses.

i -1 Radiological Environmental Program Summary Seabrook Nuclear Power Station, Seabrook, NH (January - December 2005)

MEDIUM: Vegetation (TG) UNITS: DCIka wet Indicator Stations Station With Highest Mean Control Stations Radionucides Mean Station Mean Mean (No. Anayses) Required Range Range Range (Non-Rotitine') LLD (No. Detected*) (No. Detected*) (No. Detected-)

L Ru-106 (18) -3.1E 1 09 -1.6E 1 -3.71 1 (0) -2.7 - 1.1)Z 2 -2.1 -1.1) 2 -1.0 - 0.5)E 2 L Ag-108ni (18) -3.8K

-1.5 -

0 (0/ 12) 0.6)E 1 10 -2.41

-1.2 0

-0.5)E (0/ 6) 1

-2.41

-1.2 -

0

0/ 6) 0.5)E 1

,I (0)

(0/ 12) (0/ 6)

L Ag-110n (18)

(0)

-7.2e 0

-2.6 - 2.1)E 1 08 -6.51

-1.7 0

-2.1)9 1

-1.1E 1

-3.8 - O.O)E I0/ 6) 1 (0/ 12) (0/ 6) (0/ 6)

L Sb-124 (18)

(0) 2.3Z 0

-5.1 -5.1)E11 (0/ 12) 08 9.3B 0

-5.1 -5.1)B11 (0/ 6)

-3.71

-5.6 -

0 8.3)E 1 (0/ 6)

I Sb-125 (18)

(0)

-3.5Z 0

-8.2 - 7.2)B1 08 6.8E 0

-2.6 - 7.2)E1 5.81

-1.6 -

0 3.1)E 1 L 1-131 (18) 60 4.21 0 (0/ 12) 09 8.0Z 0 (0/ 6) 2.9E 0 (0/ 6)

(0) -8.4 - 38.0)E 0 -8.4 - 38.0)B 0 -7.0 - 26.0)E 0 L Cs-134 (18)

(0) 60 7.3Z 0

-1.5 -

(0/ 12) 2.7)E 1 09

-3.9 -

(0/ 6) 27.0)1 0 6.5E 0

-1.8 -

(0/

3.7)E 1 6)

(0/ 12) (0/ 6) (0/ 6)

L L.. Cs-137 (18)

(0) 80 4.7Z 0

-2.0 - 2.0)B 1 (0/ 12) 10 1.3Z 1

-8.0 - 24.0)Z 0 (0/ 6) 1.3E 1

-8.0 - 24.0)B 0 (0/ 6)

L Ba-140 (18)

(0)

-1.01 1

-7.9 - 2.0)B 1 (0/ 12) 09 -7.0Z 0

-7.9 - 2.0)Z 1 (0/ 6)

-7.03

-7.9 -

0 3.1)El (0/ 6)

L Ce-141 (18)

(0)

-4.5B 0

-3.5 - 6.6)1 1 (0/ 12) 10 -2.0O 0

-2.6 - 2.2)Z1 (0/ 6)

-2.01

-2.6 -

0 2.2)B1 (0/ 6)

Ce-44 (18) 1.61 1 08 2.1Z 1 -8.0E 0 L (0) -1.8 - 8.3)B 1 (0/ 12)

-1.3 - 8.3)Z 1 (0/ 6)

-9.3 - l1.0)Z (0/ 6)

Th-232 (18) 2.01 1 10 3.9Z 1 3.91 1 (0) ( -6.0 - 13.4)Z 1 ( -2.1 - 9.6)Z 1 ( -2.1 - S.6)E 1 (0/ 12) (0/ 6) (0/ 6)

Non-Routine refers to those radionuclides that exceeded the Reporting Levels In ODCM Table A.9.1-3.

- The fraction of sample analyses yielding detectable measurements (i.e. >3 standard deviations) is shown In parentheses.

3.13 Direct Radiation Direct gamma radiation exposure was measured with thermoluminescent dosimeters (TLDs).

Two TLD badges are placed at each of the monitoring stations. Each TLD badge has 3 CaSO 4 :

Tm elements. A location result is an average of six independent readings per quarter. A total of forty-seven stations are located offsite, forty of which are required. The badges were collected and readout on a quarterly schedule.

The exposure rates were normalized to a 91-day quarter. A summary of the data is shown in Table 3.1. Overall, the REMP direct radiation program showed no indication of increased direct radiation above background either within the owner-controlled area or beyond the site boundary.

This is demonstrated by the fact that indicator location results are statistically identical to control locations. The 2005 annual mean of all indicator locations was 15.8 mRI91-day quarter while the mean of all control locations was 16.9 mR/91-day quarter. This verifies that there is no difference in the annual dose as a function of distance from the plant. The fractional difference of the 2004 TLD measurements compared with pre-operational TLD measurements show that no direct dose was attributed to station operation during 2005.

The direct radiation-monitoring program demonstrated that there was no offsite dose to the public or impact to the environment from the operation of the plant. Therefore, no increasing or decreasing trends were detected.

Any sample collection and analysis deviations from the ODCM required program, or reportable concentrations, that may have occurred during the year are described in Section 4.

L TABLE 3.1 Environment al TLD Measurements Net Exposure in mR/Standard Quarter (91 days)

J 2005 Annual Sta. lot Quarter 2nd Quarter 3rd Quarter 4th Quarter Avg.

1tQ Description E D_ S.LD. ErDp. S .E iSD EX2 D Rn S.D. ED .

1=01 Brimmer's Lane 16.7 +/- 0.7 18.9 +/- 0.9 18.3 + 0.6 19.0 1.0 18.2 L TI-02 TD-03 Landing Road Glade Path 12.7 14.7

+/-

0.5 0.6 14.5 15.4

+/-

0.7 0.6 12.8 13.9 +

+/- 0.6 14.5 0.6 15.8 +/-

+/- 1.0 1.6 13.6 15.0 TD 04 island Path 14.2 + 0.6 15.4 + 0.9 14.3 + 0.4 15.5 + 0.8 14.9 T1-05 Harbor Road 15.5 + 0.7 + 19.3 + 0.8 22.4 + 1.3 19.1 TI,-06 Barge Landing 12.6 + 0.5 14.8 +0.8 13.3 + 0.6 15.1 + 0.9 14.0 TD-07 Cross Road 11.4 + 0.7 12.6 + 0.8 11.7 + 0.5 13.0 + 0.7 12.2 TL-08 Farm Land 13.8 0.8 15.8 + 0.9 14.9 +/- 0.6 16.5 +/- 1.9 15.3 TL15a-09Farm Lane 14.8 +/- 0.7 16.9 +/- 0.9 15.5 + 0.5 17.0 + 1.0 16.1 T11,-10 Site Boundary 14.1 +/- 0.6 17.3 +/- 0.9 16.2 +/- 0.6 17.3 + 0.9 16.2 T1-l Site Boundary 13.5 + 0.6 18.0 + 0.8 17.0 + 0.7 17.8 + 0.9 16.6 TI.-12 Site Boundary 14.9 +/- 0.6 19.7 +/- 0.6 18.4 + 0.7 18.3 +/- 1.0 17.6 T1-13 Inside Site Boundary 18.5 +/- 0.7 19.8 +/- 0.9 18.3 +/- 0.6 19.5 + 1.2 19.0 L TL-14 TD-15 Trailer Park Brimm r's Lane 14.3 15.8 +

+/- 0.7 0.6 15.7 18.5

+/-

0.8 15.0 0.9 18.6

+

0.5 0.8 15.6 19.4

+

1.0 1.1 15.1 18.1 TD-16 Brimer's Lane 14.9 +/- 0.7 16.6 + 0.9 15.5 + 0.5 16.8 +/- 0.8 15.9 TL.-17 South Road 13.7 +/- 0.5 16.1 +/- 0.7 15.3 + 0.7 17.2 +/- 0.7 15.6 T17,-18 Mill Road 12.6 +/- 0.7 14.9 + 0.8 15.2 +/- 0.7 16.0 +/- 0.8 14.7 T11-19 Appledore Avenue 14.2 +/- 0.5 15.5 +/- 0.8 14.8 + 0.6 16.1 +/- 0.9 15.2 TD-20 Ashworth Avenue 17.0 +/- 0.7 17.0 +/- 0.6 15.9 _ 0.6 _ 16.6 TI.-21 Route 1A 14.1 _ 0.9 16.2 _ 0.7 14.5 _ 0.7 16.2 _ 1.1 15.3 TLD-22 Cable Avenue 14.9 _ 0.7 17.3 + 0.8 15.5 +/- 0.7 16.9 _ 0.8 16.1 T,-23 Ferry Road 14.1 +/- 0.6 16.2 +/- 0.9 15.5 _ 0.7 15.8 +/- 0.9 15.4 D.-24 Ferry Lots Lane 13.4 +/- 0.7 15.5 _ 0.6 15.2 _ 0.6 15.1 + 1.0 14.6 U TD-25 TD-26 TL-27 Elm Street Route 107A Highland Street 15.3 13.5 14.1

+/-

0.7 0.7 0.5 16.7 15.2 15.2

+/-

0.7 0.8 15.5 0.7 14.9 15.1

+/-

0.8 0.8 0.6 16.7 17.4 15.7

+/-

0.9 1.2 0.9 16.C 15.2 15.C TL-28 Route 150 14.2 +/- 0.8 16.2 +/- 0.6 16.0 +/- 1.1 16.4 _ 0.8 15.1 ThD-29 Frying Pan Lane 13.9 +/- 0.6 15.7 +/- 0.7 15.1 _ 0.6 15.6 _ 0.9 15.1 DT-30 Route 27 12.2 _ 0.7 15.2 +/- 0.7 15.5 _ 0.6 15.4 +/- 0.8 14.S T.-31 Alumni Drive 11.8 +/- 0.5 14.0 +/- 0.6 14.5 +/- 0.7 14.6 _ 0.8 13.1 TL-32 SB Elementary School 15.9 + 0.6 18.5 + 0.7 17.3 +/- 0.7 18.0 0.8 17.4 TL-33 Dock Area 15.9 +/- 0.6 19.1 +/- 0.9 18.2 +/- 0.7 19.6 _ 0.9 18.2 TD.-34 Bow Street 17.8 +/- 1.0 18.8 +/- 1.1 19.6 _ 1.8 19.4 _ 1.0 18.5 T.-35 Lincoln Ack. School 16.0 +/- 0.7 17.6 +/- 0.8 17.6 _ 0.7 17.7 +/- 0.9 17.1 TD-36 Route 97(Control) 15.3 _ 0.7 15.1 +/- 0.7 13.5 +/- 0.5 14.6 +/- 0.7 14..'

T3D-37 Plaistow, NH (Control) 16.9 +/- 0.8 18.0 +/- 1.0 17.2 _ 0.8 18.0 +/- 0.8 17.!i TD-38 Hampstead, NH (Control) 17.9 +/- 0.9 19.6 +/- 1.3 18.8 +/- 0.7 20.1 +/- 0.9 19.1.

T.-39 Fremont, NH (Control) 20.2 +/- 0.9 21.5 +/- 1.0 21.0 _ 1.0 20.9 +/- 1.2 20.1' TD-40 Newmarket, NH (Control) 13.5 +/- 0.9 16.6 +/- 0.7 16.6 +/- 0.7 16.2 +/- 0.9 15."

I TABLE 3.1 Environment al TLD Measurements I Net Exposure in mR/Standard Quarter (91 days) 2005 I Annual Sta.

No .

1st Quarter ZXzP S.D.

2nd Quarter Ezxx S.D-3rd Quarter EZxx S.D.

4th Quarter EmIp S.D.

Ave.

zX_ I 15.9 +/- 0.6 16.3 +/- 0.8 16.0 +/- 0.9 17.1 +/- 0.8 16.3 I

TL-41 Portsmouth, NH (Control)

TL-42 Ipswich, HA (Control) 13.5 + 0.6 14.2 + 0.8 13.8 + 0.5 14.7 +/- 0.7 14.1 TL-43 Rocks Road Landing 12.3 + 0.8 12.6 + 0.6 14.3 +/- 0.7 13.8 +/- 0.9 13.2 TL-44 SB Education Center 13.1 +/- 0.6 14.7 +/- 0.6 15.0 +/- 0.9 14.8 +/- 1.0 14.4 Hampton Fire Station 16.7 +/- 0.9 17.5 + 0.8 17.6 + 1.1 16.9 +/- 0.8 17.2 I

TL-45 TL-46 SB Police Station 15.9 +/- 0.7 16.0 + 0.6 15.4 +/- 0.9 16.8 + 0.9 16.0 TL-47 Route 84 14.1 +/- 0.7 15.4 +/- 0.7 15.2 +/- 0.8 16.3 +/- 1.0 15.3 Mean of Indicators 14.5 16.3 15.8 16.7 15.8 Mean of Controls 15.7 17.7 16.7 17.8 16.9 I

I I

FIGURE 3.6 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 - 40.0 30.0 - 30.0 a20.0 - 20.0 a

E 10.0 - - 10.0 0.0 - 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005 I U TL-01 Brimmer's Lane I + TL-02 Landing Road A TL-03 Glade Path if TL-04 Island Path

- TL-05 Harbor Road U c fq 3

FIGURE 3.6.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30 30 t

as a20 20 E

10 10 01 , I I I 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

-l- TL-01 Brimmer's Lane

- TL-02 Landing Road A TL-03 Glade Path

-*TL-04 Island Path

TL-05 Harbor Road FIGURE 3.7 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 -I 40.0 30.0 - - 30.0 0

t:

a 20.0 - 20.0 E.

10.0 - 10.0 0.0 - 0.0 Qtr-1 Qtr-2 Qtr-3 Qtr-4 2005

-9 TL-06 Barge Landing

-- TL-07 Cross Road is TL-08 Farm Lane

+ TL-09 Farm Lane X*TL-10 Site Boundary CIZO

FIGURE 3.7.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 - 40 30 30 a 20 20 E

10 - 10 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

-3 TL-06 Barge Landing

- TL-07 Cross Road

-I- TL-08 Farm Lane

- TL-09 Farm Lane x TL-10 Site Boundary ClI

FIGURE 3.8 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 - 40.0 30.0 - 30.0 a

t a 20.0 - - 20.0 E

10.0 - 10.0 nII nf% A1 U.v - 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005 cl TL-1 1 Site Boundary e TL-12 Site Boundary

--e- TL-13 Inside Site Boundary

-- TL-14 Trailer Park I

-*TL-15 Brimmers Lane I FIGURE 3.8.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40- -40 30 -- 30 a) 20 - 210 1 1 1 2 2 20 2006 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

-a- TL-1 1 Site Boundary

@ TL-12 Site Boundary

---&- TL-13 Inside Site Boundary

- TL-14 Trailer Park

-a TL-15 Brimmer's Lane FIGURE 3.9 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 - 30.0 ai t~

a 20.0 - - 20.0 Q) 0~

E i - =

10.0 - 10.0 0.0 - 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005 X TL-16 Brimmers Lane e TL-17 South Road

-- TL-18 Mill Road

-*TL-19 Appledore Avenue' i TL-20 Ashworth Avenue FIGURE 3.9.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30l +3 0

_0 1 E

a 0 20 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

- - TL-16 Brimmer's Lane o TL-17 South Road

TL-18 Mill Road o TL-19 Appledore Avenue

-X- TL-20 Ashworth Avenue C25

FIGURE 3.10 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 4A00 i

30.0 - 4'r30.0 320.0 - - 20.0 0) 0.

E --G-- V 10.0 -10.0 0.0 - 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005 G TL-21 Route 1A a TL-22 Cable Avenue A TL-23 Ferry Road

+ TL-24 Ferry Lots Lane

-*TL-25 Elm Street

- C -ZGo

FIGURE 3.10.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 _ 40 30 + 30 C}20 -20 a}

10 - 10 1 19 8 I 1 1 1 200 . 2 .4 200 1986 1988 1990 1992 1994 1996 199 200 2002 2004 2006 I - TL-21 Route 1A o TL-22 Cable Avenue A- TL-23 Ferry Road

--o- TL-24 Ferry Lots Lane

TL-25 Elm Street a c-z~

FIGURE 3.1 1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 30.0 IT m

C20.0 - 20.0 a) cL 10.0 10.0 0.0 I 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005 I TL-26 Route 107A e TL-27 Highland Street A TL-28 Route 150

-'TL-29 Frying Pan Lane

-- TL-30 Route 27 CZV6

FIGURE 3.11.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30 30 0)

" 20 20 a

E 10 10 O1 1 1 9 1 1 20 00 . . 2 20 0 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

- TL-26 Route 107A e TL-27 Highland Street a TL-28 Route 150

- TL-29 Frying Pan Lane

TL-30 Route 27 CLZ9

FIGURE 3.12 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 1 - l 40.0 30.0 30.0 a

a)20.0 iI - 20.0 p4-II E.

B 11 10.0 -1 -10.0 0.0 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005

-UTL-31 Alumni Drive 0 TL-32 SB Elementarty School

- TL-33 Dock Area

-4TL-34 Bow Street

- TL-35 Lincoln Ackerman School G~o

FIGURE 3.12.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30 2 + 30 1

I a 20- 20 E

10 10 I

- 0 1986 1988 1990 19c,92 1994 1996 1998 2000 2002 2004 2006

- TL-31 Alumni Drive

- TL-32 SB Elementary School TL-33 Dock Area 0 TL-34 Bow Street

TL-35 Lincoln Ackerman School FIGURE 3.13 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 V 40.0 30.0 - 30.0 G)

- X K a 20.0 X .,

T 20.0 a:

W.

o _ = 0 n o o

_,, X E _

1 i_ _ r 10.0 - 10.0 11 I

u.u 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005

-9 TL-36 Route 97 (Control) o TL-37 Plaistow, NH (Control)

A TL-38 Hampstead NH (Control)

- TL-39 Fremont, NH (Control)

- TL-40 Newmarket, NH (Control)

FIGURE 3.13.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30 30 a42) 20 20 0

E 10 - 10 10 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

-a TL-36 Route 97 (Control)

O TL-37 Plaistow, NH (Control) a TL-38 Hampstead NH (Control)

-- TL-39 Fremont, NH (Control)

] TL-40 Newmarket, NH (Control) c?73

FIGURE 3.14 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40.0 40.0 30.0 30.0 M

a20.0 20.0 10.0 10.0 0.01 0.0 Qtr. 1 Qtr. 2 Qtr. 3 Qtr. 4 2005

-B-TL-41 Portsmouth, NH (Control)

-4e TL-42 Ipswich, MA (Control)

TL-43 Rocks Road Landing 0 TL-44 SB Education Center

- TL-45 Hampton Fire Station

--oTL-46 SB Beach Police Station

- TL-47 Hampton Falls, Route 84 C-39

FIGURE 3.14.1 ENVIRONMENTAL RADIATION MEASUREMENTS (USING TLDs)

SEABROOK STATION 40 40 30 - 30 a) r a 20 20 a)

E 10 10 018 18 1990

. 19 96 9 2 2 2 20061o 1986 1988 1990 1992 1994 1996 1998 2000 2002 2004 2006

-- G- TL-41 Portsmouth, NH (Control) o TL-42 Ipswich, MA (Control)

A TL-43 Rocks Road Landing

- e TL-44 SB Education Center X TL-45 Hampton Fire Station

- TL-46 SB Beach Police Station

+ TL-47 Hampton Falls, Route 84 4.0 Program Deviations and Reporting 4.1 Sampling Program Deviations Table A.9.1-1 of the Offsite Dose Calculation Manual (ODCM) allows for deviations in the REMP sampling schedule "if specimens are unobtainable due to circumstances such as hazardous conditions, seasonal unavailability and malfunction of automatic sampling equipment." All deviations from the sampling schedule shall be documented each year in the Radiological Environmental Operating Report. The deviations for 2005 are as follows:

Air sample stations APICF-01, AP/CF-05 and AP/CF-08 lost AC power for approximately 40 minutes on 2/10/2005 due to utility maintenance activities not related to the air sampler, thereby failing to continuously collect a sample.

TLD TL-05 was missing from its location at the end of the second quarter and could not be recovered. There was heavy road and building construction in the area of the TLD during the second quarter of 2005.

Air sample station AP/CF-05 was removed from service between 7/15/2005 and 10/23/20D5 for building modifications where the station was physically located. Air sampling at this location was suspended until the property management permission was granted. The Air sample station was out of service for 98 days-5 hours. It is also noted that AP/CF-05 is not one of the required REMP sampling locations and isreported here for information only.

Air sample station AP/CF-08 stopped running on 8/28/2005 due to a blown fuse caused by a seized motor bearing. The sample pump had lost approximately 40 hours4.62963e-4 days 0.0111 hours 6.613757e-5 weeks 1.522e-5 months of run time for the cycle. The pump and the GFI duplex outlet were replaced and the air sample station was returned to service on 8/30/2005. It isalso noted that APICF-08 is not one of the required REMP sampling locations and is reported here for information only.

Air sample station AP/CF-02 lost AC power for approximately 7 hours8.101852e-5 days 0.00194 hours 1.157407e-5 weeks 2.6635e-6 months on 11/21/2005 due to utility maintenance activities not related to the air sampler, thereby failing to continuously collect a sample.

TLD TL-20 was missing from its location at the end of the fourth quarter and could not be recovered. It is believed that the TLD was inadvertently hit during heavy road construction that was taking place in the area of the TLD during the fourth quarter of 2005.

4.2 Comparison Of Achieved LLDs With Requirements Table A.9.1-2 of the ODCM indicates the required Lower Limits of Detection (LLDs) for environmental sample analyses. (This table is duplicated in Table 4.1 of this report.) Occasionally an LLD isnot achievable due to a situation such as a low sample volume caused by sampling equipment malfunction.

In such a case, ODCM Table A.9.1-2 requires a discussion of the situation in the annual Radiological Environmental Operating Report. At the Framatome Environmental Laboratory (FANPEL), the target LLD for any analysis is typically 30-40 percent of the most restrictive required LLD. Expressed differently, the typi,:al sensitivities achieved for each analysis are at least 2.5 to 3 times greater than that required by the Seaibrook ODCM.

For each analysis having an LLD requirement in ODCM Table A.9.1-2, the a posteriori (after the fact) LLD, ,,

or Minimum Detectable Concentration (MDC) calculated for that analysis was compared with the required LLD. During 2005, over 1350 analyses had an LLD requirement listed in Table 4.1. During 2005, no LLD's were missed.

4.3 Comparison of Results Against Reporting Levels Seabrook Station ODCM Section 10.1 requires the notification of the NRC by special report within 30 days of receipt from the environmental laboratory whenever a Reporting Level in Table 4.2 is exceeded.

Reporting Levels are the environmental concentrations that relate to the ALARA design dose objectives of 10 CFR 50, Appendix I. It should be noted that environmental concentrations are averaged over calendar quarters for the purposes of this comparison, and that Reporting Levels apply only to measured levels of radioactivity due to plant effluents. During 2005, no Reporting Levels were exceeded.

'i

-Ei E-X i r l CE (II r-11r:E 7l F= Eli E 7l r-- [7- - r7 Table 4.1 DETECTION CAPABILITIES FOR ENVIRONMENTAL SAMPLE ANALYSISa Lower Limit of Detection (LLD)

Fish and Water Airborne Particulate or Invertebrates Milk Food Products Sediment Analysis (pCi/kg) Gas (pCi/kg, wet) (pCi/kg, wet) (pCi/kg) (pCi/kg, wet) (pCi/kg, dry)

Gross Beta 4 0.01 H-3 3,000 Mn-54 15 130 Fe-59 30 260 Co-58, 60 15 130 Zn-65 30 260 Zr-Nb-95 15c 1-131 15 0.07 1 60 Cs-1 34 15 0.05 130 15 60 150 Cs-137 18 0.06 150 18 80 180 Ba-La-140 15 15

a. Reference Seabrook Station ODCM, Table A.9.1-2 for clarifications Table 4.2 REPORTING LEVELS FOR RADIOACTIVITY CONCENTRATIONS INENVIRONMENTAL SAMPLESb Analysis Water Airborne Particulate or Gas Fish and Milk Food Products (pCi/kg) (pCi/kg, wet) Invertebrates (pCi/kg) (pCi/kg, wet)

(pCi/kg, wet)

H-3 30,000***

Mn-54 1,000 30,000 Fe-59 400 10,000 Co-58 1,000 30,000 Co-60 300 10,000 Zn-65 300 20,000 Zr-Nb-95 400*

1-131 100 0.9 3 100**

Cs-134 30 10 1,000 60 1,000 Cs-137 50 20 2,000 70 2,000 Ba-La-140 200* 300*

Parent only.

- Broad leaf vegetation only.

- - Plant de-watering reporting level = 20,000 pCi/kg (2E-05 uCi/mI)

b. Reference Seabrook Station ODCM Table A.9.1-3 for clarifications.

r r:

1- I r. rz- c -; c - , -. rz

=

c= F7 L r - r -- [------ E --I - r=

Ur-- v

L L 5.0 QUALITY ASSURANCE PROGRAM The quality assurance program at the AREVA Framatome ANP Environmental Laboratory (FANPEL) is designed to serve two overall purposes: 1) Establish a measure of confidence in the measurement process to assure the licensee, regulatory agencies and the public that analytical results are accurate and precise; and 2) Identify deficiencies in the sampling and/or measurement process to those responsible for these operations so that corrective action can be taken. Quality assurance is applied to all steps of the measurement process, including the collection, measurement and reporting of data, as well as the record keeping of the final results. Quality control, as part of the quality assurance program, provides a means to control and measure the characteristics of the measurement equipment and processes, relative to established requirements.

The FANPEL employs a comprehensive quality assurance program designed to monitor the quality of analytical processing to ensure reliable environmental monitoring data. The program includes the use of controlled procedures for all work activities, a nonconformance and corrective action tracking system, LZ systematic internal audits, audits by external groups, a laboratory quality control program, and a staff training program. Monitoring programs include the Intralaboratory Quality Control Program administered by the Laboratory QA Officer (used in conjunction with the National Institute of Standards and Technology L Measurement Assurance Program, NIST MAP) and a third party cross check program administered by Analytics, Inc. Together these programs are targeted to supply QC/QA sources at 5% of the client sample analysis load. In addition a blind duplicate program is conducted through client environmental monitoring programs.

This summary reports all intralaboratory and third party results received by FANPEL on or before December 31, 2005.

5.1 Intralaboratory Quality Control Program The FANPEL QA Officer administers an extensive intralaboratory quality control program in which process check samples are submitted for analysis. These samples are "spiked" with a known amount of radioactive material and are routinely submitted in triplicate to evaluate the bias and precision of a measurement process. Table 5.1 provides the summary of the process check results for January to December 2005. Of the 520 analyses, 100% passed the bias criteria and 100% of the 102 results evaluated for precision were acceptable. The FANPEL internal acceptance criteria are summarized at the end of Table 5.1.

5.2 Third Party Cross Check Program The FANPEL participates in a third party cross check program managed by Analytics Inc. to satisfy the requirement of the Environmental Technical Specification/ODCM. The FANPEL Analytics program was originally used to augment the EPA Intercomparison Program that it now replaces. The current program is designed to be comparable to the pre-1996 EPA PE Program in terms of the number of samples, matrices and nuclides. The results for the 4h quarter 2004 through the 4th quarter 2005 are summarized in Table 5.2. Each sample is normally analyzed in triplicate and the results are evaluated against the internal acceptance criteria described in the FANPEL Manual 100-Laboratory Quality Assurance Plan.

This. acceptance protocol is used for all interlaboratory programs with no pre-set acceptance criteria.

When results fall outside of the acceptance criteria, an investigation is initiated to determine the cause of the problem and if appropriate, corrective measures are taken. The FANPEL internal acceptance criteria are summarized at the end of Table 5.1.

5.3 Blind Duplicate Program Under the Blind Duplicate Quality Assurance Program, samples are split from homogeneous environmental media by the client and sent to the FANPEL for analysis. They are "blind" in that the identification of the matching sample is not identified to the Laboratory.

Participating clients submitted a total of 32 paired samples in 2005. The measurements evaluated include twenty-six gamma emitting radionuclides, tritium, and gross beta. All measurements are evaluated, whether the results are statistically positive or not, and whether the net concentration is positive or negative.

The samples submitted as part of this program are listed in Table 5.3. For the 2005 program, 99.5%

(618/621) of the measurements met the FANPEL internal acceptance criteria.

5.4 Environmental TLD Quality Assurance Program L Performance documentation of the routine processing of the Panasonic environmental TLDs (thermoluminescent dosimeter) program at the FANPEL is provided by the dosimetry quality assurance testing program. This program includes independent third party performance testing by Battelle Pacific I

Northwest Labs and internal performance testing conducted by the Laboratory QA Officer. Under these programs, sets of six dosimeters are irradiated to ANSI specified testing criteria and submitted for l processing to the Dosimetry Services Section as "unknowns". The bias and precision of TLD processing is measured against this standard and is used to indicate trends and changes in performance.

Instrumentation checks, although routinely performed by the Dosimetry Services Group and representing between 5-10% of the TLDs processed, are not presented in this report because they do not represent a true process check sample since the exposures are known to the processor.

L Ninety-six performance tests were conducted in 2005 by FANPEL and the third party tester. These tests were made on 16 separate sets of 6 dosimeters. All of the 16 TLD test sets passed the mean bias criteria of +/-20.1%. Of the ninety-six individual measurements, 100% of the dosimeter evaluations met the FANPEL Internal Acceptance Criteria for bias (+/-20.1%) and precision (+/-12.8%). Third Party QC results are summarized below.

L L

L

L l, Percentage of Individual Analyses that passed FANPEL Internal Criteria Dosimeter Type Number % Passed Bias Criteria % Passed Precision Tested Criteria Panasonic 96 100 100

. Environmental U Summary of Third Party Testing Dosimeter Type Exposure ANSI Category % (Bias + SD)

U Panasonic Period Q4/2004 11,high energy 8.2 +/- 2.5 Environmental f Q1/2005 II,high energy 0.1 +/- 1.6

_of Q2/2005 II, high energy 4.4 +/- 1.6

___ _I Q3/2005 II, high energy -1.0 +/- 1.2

American National Standards Institute (ANSI) Performance Statistic as referenced in the Dosimetry Services Semi-Annual Status Report.

IQA Noto: Results are expressed as the delivered exposure for environmental TLD. ANSI HPS N13.29-1995 (Draft)

Category 11,High energy photons (Cs-1 37 or Co-60).

TABLE 5.1 I FANPEL RESULTS IN THE INTRALABORATORY PROCESS CONTROL PROGRAM January - December 2005 Media Bias Criteria (1) Precision Criteria (2)

Analysis 1 2 3 4 1 2 3 4 I. Air Charcoal Gamma-Quantitative Gamma-Screening 3

98 3

33 0

4 0

0 0

0 L

II. Air Filter Beta 230 24 0 0 0 0 0 0 Ill. Milk Gamma 3 0 0 0 7 2 12 0 Sr-89 4 1 0 0 5 0 0 0 Sr-90 5 0 0 0 5 0 0 0 IV. Water jr I Gross Alpha 12 4 12 0 2 0 6 0 Gross Beta 18 19 2 0 8 0 0 0 Gamma 8 6 0 0 6 0 18 0 Sr-90 4 1 4 0 2 0 6 0 Tritium 14 8 0 0 17 2 4 0 Total Number in 399 99 22 0 52 4 46 0 Range Percentage of Total 76.7 19.0 4.2 0.0 51.0 3.9 45.1 0.0 L Processed 520 11 Sum of Analyses 520 102 V-(1) Percent Bias Criteria by Bias Category (2) Percent Precision Criteria by Precision Category Bias Category = I > 0% and < = 5%

Bias Category = 2 > 5% and < = 10%

Bias Category = 3 > 10% and < = 15%, or Precision Category = I > 0% and < = 5%

Precision Category = 2 > 5% and < = 10%

Precision Category = 3 > 10% and < = 15%, or L

within 2 sigma of known within 2 sigma of mean Gross alpha/beta water, Sr 89/90 > 10% and Transuranics > 10% and < = 20%

Bias Category = 4 Outside Criteria

< = 25% Precision Category = 4 Outside Criteria U

U U

LJ 1

L L TABLE 5.2 FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2004 - Quarter 4, 2005 Ratio Sample Quarter/ Sample Reported Known E-LAB Number Year Media Nuclide Value Value Analytics Evaluation El380-162 4th/2004 Water H-3 8327 8060 1.03 Areernent Et381-162 4th/2004 Filter Sr-89 87.7 92.3 0.95 Aqreement E4381-162 4th/2004 Filter Sr-gO 8.78 10.6 0.83 Ayeement Et382-162 4th/2004 Filter Gross AJpha 24.9 29.5 0.84 NonAgreerment Et382-162 4th/2004 Fitter Gross Beta 223 204 1.09 Aireement El383-162 4tW2004 Filter Ce-141 75.6 80.3 0.94 Ayreement E1383-162 4th/2004 Filter Cr-51 201 189 1.06 Ayeement El383-162 4thl2004 Filter Cs-134 82A 84.7 0.97 Ayeement Et383-162 4th/2004 Filter Cs-137 68.8 62.9 1.09 Ayeernent E$383-162 4th/2004 Filter Co-58 75.3 72.9 1.03 Ayeement E4383-162 4th/2004 Filter Mn-54 76.3 67.7 1.13 Areernent E4383-162 4th2004 Filter Fe-59 69.8 60.5 1.15 Non-Agreement E4383-162 4thl2004 Filter Zn-65 109 97.7 1.12 Areement E4383-162 4tht2004 Filter Co-60 85.1 87.1 0.98 Aweement E4384-162 4th/2004 Milk 1-131LL 64.2 66.7 0.96 Agreement E4384-162 4tl4 Milk 1-131 69.0 66.7 1.03 Agreement E4384-162 4th/2004 Milk Ce-141 154 155 0.99 Agreement E4384-162 4th/2004 Milk Cr-51 385 379 1.02 Ayreement E4384-162 4th/2004 Milk Cs-134 167 170 0.98 Agreement E4384-162 4th/2004 Milk Cs-137 132 126 1.05 Agreement E4384-162 4tVh2004 Milk Co-58 147 146 1.01 Agreement E4384-162 4th/2004 Milk Mn-54 144 136 1.06 Agreement E4384-162 4th/2004 Milk Fe-59 129 121 1.07 Agreement E4384-162 4t/i2004 Milk Zn-65 197 196 1.01 Agreement

_4383-162 4thV2004 Milk Co-60 177 175 1.01 Aareement E4412-162 4tlV2004 Water Sr-89 90.9 98.1 0.93 Agreement E4412-162 4th/2004 Water Sr-90 9.33 11.3 0.83 Agreement Values in pCi/Liter (Filters in pCi)

Gross alpha on filter failure identified need to increase acceptance criteria to include random L uncertainties inherent in preparation of QC sample.

Fe-59 on filter failure resulted in use of new gamma spectroscopy calibration coincidence correction factor.

L Li L

TABLE 5.2 (cont'd) (1 FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2004 - Quarter 4, 2005 Sample Quarted Sample Reported Known Ratio ELABt L

I Number Year Media Nucilde Value Value Anycs Evaluation E4459-162 1sU2005 Water Gross Alpha 39.9 40.8 0.98 Agreement E4459-162 1stQ2005 Water Gross Beta 279 292 0.96 A nt E4460-162 1st/2005 Water 1-13ILL 66.2 65.9 1.00 Agreement E4460-162 1stU2005 Water 1-131 69.3 65.9 1.05 Agreement E4460-162 stV2005 Water Ce-141 219 221 0.99 Agreement E4460-162 1sV2005 Water Cr-51 346 322 1.07 Agreement E4460-162 st/2005 Water Cs-134 130 134 0.97 Agreement E4460-162 E4460-162 E4460-162 1st/2005 1st2005 1sU/2005 Water Water Water Cs-137 Co-58 Mn-54 127 108 160 125 111 154 1.01 0.97 1.04 Agreement Agreement Agreement

]

E4460-162 1stU2005 Water Fe-59 114 107 1.07 Agreement E4460-162 1sU2005 Water Zn-65 192 191 1.01 Agreement E4460-162 Ist/2005 Water Co 60 138 139 1.00 Agreement E4461-162 1st/2005 Water Sr-89 94.6 103 0.92 Agreement E4461-162 lst/2005 Water Sr-go 15.6 17.2 0.90 Apment E4462-162 1st/2005 Filter Gross Alpha 20.8 21.9 0.95 Agreement E4462-162 1SV2005 F;iter Gross Beta 162 157 1.04 Agreement E4463-162 1SV2005 Milk 1-131LL 912 92.3 0.99 Agreement E4463-162 1st/2005 Wk 1-131 95.9 92.3 1.04 Agreement L E4463-162 1stV2005 Milk Ce-141 229 229 1.00 Agreement E4463-162 1str2005 0llk Cr-51 334 334 1.00 Agreement E4463-162 1sU2005 Mlk Cs-134 137 139 0.99 Agreement E4463-162 1stQ005 Milk Cs-137 133 130 1.03 Agreement E4463-162 1st/2005 Milk Co-58 118 115 1.02 Agreement E4463-162 E4463-162 E4463-162 1st/2005 1st/2005 1stl2005 Mlk Milk Mlk Mn-54 Fe-59 Zn-65 166 117 203 160 111 198 1.04 1.05 1.03 Agreement Agreement Agreement L

E4463-162 1sU2005 Milk Co-60 145 144 1.01 Agreement E4464-162 1st/2005 Milk Sr-89 93.8 107 0.88 Agreement E44S4162 IsV2005 Mlk Sr-go 16.1 17.9 0.90 Akreement Values in pCiLiter (Filters in pCi)

LI L

L I

L1

TABLE 5.2 (cont'd)

FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2004 - Quarter 4, 2005 3Sample -wrted Sample Reported

_- K_ E-4AB IiTer Year Media Nuclide Value Value Anytcs Evaluation E:4599-162 2ndU2005 Water H-3 9060 9100 1.00 Amreenent E:4600-162 2ndM205 Filter Gross Alpha 31.9 30.9 1.03 Agreemnent E4600-162 2Z2005 Fitter Grcss Beta 125 127 0.99 Aareenmxt E4601-162 2ndZ2005 Ftter Co-141 59.3 58.9 1.01 Pgreement E4601-162 2nZ2005 Filter C>-51 207 193 1.07 Pgreement E:4601-162 Z2dPW5 Filter Cs-134 59.1 60.6 0.98 Agreement E4601-162 2nd92005 Flter Cs-137 131 120 1.09 Agreement E:4601-162 2rd/2005 Fiter CO-58 3.55 3A 1.04 Agreement E-.4601-162 2ndU2005 Fiter Mn-54 88.6 79.7 1.11 Agreement E:4601-162 2Zxd2005 Filter Fe-59 40.1 40.7 0.99 Agreement E:4601-162 2ndP235 Filter Zn-65 112 98.8 1.13 greEment E_4601-162 2ndQ005 Fiter CoD60 89.4 923 0.97 Agreent EA'602-162 2nd005 Filter Sr-89 90.5 97.5 0.93 AgreE£rent E'4602-162 2ndt2005 Filter Sr-90 13.0 12.6 1.03 kgrement E'4603-162 2nd/2005 Mlk 1-131LL 85.7 86.9 0.99 Agreernent E':4603-162 2nd/2005 Mlk 1-131 86.8 86.9 1.00 Agreeent E:4603-162 2nd2005 Mlk Ce-141 96.3 92.4 1.04 PgeEfent E4603-162 2ndQ005 Mlk Cr-51 295 303 0.98 greEment E:4603-162 2ndQ005 Mlk Cs-134 87.7 95 0.92 Ageument E-4603-162 2nd/2005 Mik Cs-137 186 189 0.9 AgreEment Ei4603-162 2ndM005 Mlk CD58 5.83 5.30 1.10 Agreunent E:4603-162 2ndQ005 Mlk NTF54 124 125 0.99 Pqeetnent E-4603-162 2ndi2005 Mlk Fe-59 67 63.9 1.05 Ag rmient E:4603-162 2nd/2005 Mlk Zn-65 149 155 0.96 geement

.4603-162 2nd/2005 Mlk Co-60 138 145 0.98

Values in pCi/Liter (Filters in pCi)

Bias and Precision Acceptance Criteria as described above.

TABLE 5.2 (cont'd) I FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2004 - Quarter 4, 2005 Raio Samlpe Quarterd Sample Reported Known E-LABl Number Year mHda Nudide Value Value -A Evaluation E4686&162 3rdt2O05 Water Gross Alpha 4Z3 41.6 1.02 Agreement E4686-162 3rdt2005 Water Gross Beta 128.5 123 1.05 A t E4687-162 3rd2005 Water 1-131LL 78.3 78.2 1.00 Agreement 1 ,

E4687-162 3rd005 Water 1-131 77.2 78.2 0.99 Agreement E4687-162 3rd12005 Water Ce-141 276.4 282 0.98 Agreement E4687-162 3rdQ2005 Water Cr-51 35a7 408 0.87 Agreement E4687-162 3rd005 Water Cs-134 137.3 148 0.93 Agreement E4687-162 3rd2005 Water Cs-137 231.1 235 0.98 Agreement E4687-162 3rd2005 Water Co-58 72.5 77.0 0.94 Agreement 4

E4687-162 3d/2005 Water i1-5 113.2 111 1.02 Agreement E4687-162 3d/2005 Water Fe-59 74.7 74.0 1.01 Agment Ii E4687-162 3rdQ2005 Water . Zn-65 15Z3 149 1.02 Agrment E4687-162 3rdr2005 Water Co.60 192.1 202 0.95 Agreement E4688-162 3rdt2005 Chamoal 1-131 61.0 62.7 0.97 Ag E4689-162 3rd005 Filter Gross Alpha 39.3 38.0 1.04 Agreemen E4689-162 3rdr2005 Filter Gross Beta 120.8 112 1.08 Agr E4690-162 3rd2005 Mlk 1-13ILL 99.0 94.3 1.05 Agreement E4690-162 3md12005 Milk 1-131 90.0 94.3 0.95 Agreement UI E4690-162 3rdr2005 Milk Ce-141 228.5 233 0.98 Agreement E4690-162 3rd/2005 Milk Cr-51 306.3 338 0.91 Agreement E4690-162 3df2005 Mlk Cs-134 118.3 122 0.97 Agreement E46904162 3rd12005 Mlk Cs-137 196.5 195 1.01 Agreement E469D-162 3rxl2005 Milk Co-58 64.0 63.4 1.01 Agreement E469D-162 3&d12005 Milk Mn-A4 94.7 92.0 1.03 Agreement E4694-162 3rdP2005 Milk Fe-59 63.3 61.0 1.04 Agreement E4690-162 E4694162 E4691-162 3rd/2005 3rdQ2005 3dP005 Mlk Milk Milk Zn-65 Co.60 Sr-89 121.7 165.2 139.6 123 167 146 0.99 0.99 0.96 Agreement A U L

E4691-162 3rd/2005 Mlk Sr-90 10.8 11.5 0.94 Ag Values in pCi/Liter (Filters in pCi)

I LU U

U II L

L TABLE 5.2 (cont'd)

FANPEL RESULTS IN THE ANALYTICS INC. CROSS CHECK PROGRAM Quarter 4, 2004 - Quarter 4, 2005 Ratio Sample Quarterl Sample Reported Known E-LABI U Number E4836-Year Media Nuclide Value Value Analytics Evaluation 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- Gross 162 4th/2005 Filter Alpha 22.3 25.0 0.89 Agreement 162 4th/2005 Filter Gross Beta 146 136 1.08 Agreement E4839-Filter U IE4839-162 162 4th/2005 4thl2005 Filter Ce-141 Cr-51 122 113 131 113 0.93 1.00 Agreement Agreement E4839-162 4th/2005 Filter Cs-134 48.0 51.0 0.94 Agreement U E4839-162 E4839-4th/2005 Filter Cs-137 111 111 1.01 Agreement 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 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 4thl2005 Filter Sr-90 9.05 9.70 0.93 Agreement E4841-162 4th/2005 Milk 1-131LL 72.4 74.6 0.97 Agreement E4841-162 4thl2005 Milk 1-131 74.1 74.6 0.99 Agreement E4841 -

162 4th/2005 Milk Ce-141 217 224 0.97 Agreement E4841-162 4th/2005 Milk Cr-51 190 193 0.99 Agreement E4841 -

162 4thl2005 Milk Cs-134 86.4 87.3 0.99 Agreement E4841-162 4thl2005 Milk Cs-137 187 189 0.99 Agreement 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 Agreement E4841-162 4thl2005 Milk Fe-59 87.8 82.4 1.07 Agreement E4841-162 4th/2005 Milk Zn-65 148 154 0.96 Agreement E4841-162 4th/2005 Milk Co-60 106 111 0.95 Agreement E4879-162 4th12005 Charcoal 1-131 68.4 72.0 0.95 Agreement Values in pCi/Liter (Filters in pCi)

TABLE 5.3

SUMMARY

OF BLIND DUPLICATE SAMPLES January - December 2005 TYPE OF SAMPLE NUMBER OF PAIRED SAMPLES SUBMITTED Water 26 Algae 3 Mussels TOTAL 32 6.0 Land Use Census The Offsite Dose Calculation Manual (ODCM Control 9.2.1) requires that a Land Use Census be conducted annually to identify the location of the nearest residence, milk animal and nearest garden of greater than 50 square meters producing broad leaf vegetation in each of the 113 meteorological sectors within five miles of the plant. The 2005 census was completed in accordance with the requirements of the ODCM. In2005, a global positioning system was used to determine locations in the off-site environs with respect to the center of the site (Unit I U1Containment).

The nearest resident, garden and milk animal locations identified in the 2005 Land Use Census and their distances are shown in Table 6.1. The results of this census showed that the sampling locations used in 2005 have the highest calculated dose commitment. In2005, broad leaf vegetation continued as part of the sample collection and analysis program due to the absence of sufficient milk producing locations to provide REMP samples. Sampling locations for broad leaf U vegetation are at the site boundary near points of highest predicted DIQ. This option continues, as opposed to public owned vegetable gardens located by the land use census, in order to ensure adequate availability of samples for REMP analysis.

Li Table 6.1 2005 Land Use Census Results (Within 5 Miles)

N 3.5 4.0a NNE 3.0 3.0 NE 2.9 4.5 ENE 2.3 E 2.6 ESE 2.7 SE SSE S

2.4a 1.6 1.2 1.2 Li SSW 1.1 1.4 SW 1.1 1.9 WSW 1.9 2.3 W 1.3 1.4 WNW 1.1 1.5 I NW 1.3 1.3 6.9 5.3 NNW a New in 2005 1.0 1.0 U

L U

Li U

Li II L

U LI U

U L

Attachment I l Sample Analysis Data List for 2005 f I I

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

AL 5 L9345-01 611/2005 AcTh-228 4.40E+01 2.60E+01 8.50E+01 i1 L.J AL 5 L9345-01 6/1/2005 Ag-108m -1.20E+00 3.80E+00 1.50E+01 AL 5 L9345-01 611/2005 Ag-110m 1.50E+00 9.60E+00 3.50E+01 AL 5 L9345-01 611/2005 Ba-140 -5.OOE+00 1.50E+01 6.70E+01 AL 5 L9345-01 6/1/2005 Be-7 1.44E+02 5.60E+01 1.70E+02 AL 5 L9345-01 6/1/2005 Ce-141 -2.1 OE+00 8.OOE+00 2.90E+01 AL 5 L9345-01 6/1/2005 Ce-144 -2.1 OE+01 2.30E+01 8.40E+01 1 I i

AL 5 L9345-01 6/1/2005 Co-57 -9.OOE-01 2.70E+00 1.OOE+01 AL 5 L9345-01 6/1/2005 Co-58 8.80E+00 6.1 OE+00 2.OOE+01 AL 5 L9345-01 611/2005 Co-60 -1.14E+01 9.90E+00 3.90E+01 AL 5 L9345-01 6/1/2005 Cr-51 -4.50E+01 5.60E+01 2.10E+02 AL 5 L9345-01 6/1/2005 Cs-134 1.OOE+00 5.60E+00 2.1 OE+01 AL 5 L9345-01 6/1/2005 Cs-137 3.00E-01 5.90E+00 2.20E+01 i 11 AL 5 L9345-01 6/11/2005 Fe-59 -4.20E+01 2.60E+01 1.1 OE+02 AL 5 L9345-01 6/112005 1-131 1.90E+01 2.90E+01 1.OOE+02 AL 5 L9345-01 6/1/2005 K-40 8.13E+03 3.60E+02 2.90E+02 AL 5 L9345-01 6/11/2005 La-140 -6.OOE+00 1.80E+01 7.80E+01 AL 5 L9345-01 6/1/2005 Mn-54 1.70E+00 4.90E+00 1.80E+01 AL 5 L9345-01 6/1/2005 Nb-95 -3.90E+00 7.40E+00 2.90E+01

~11 AL 5 L9345-01 6/1/2005 Ru-103 1.OOE+00 6.40E+00 2.30E+01 AL 5 L9345-01 6/1/2005 Ru-106 1.1 OE+02 5.40E+01 1.70E+02 AL 5 L9345-01 6/1/2005 Sb-124 -9.50E+00 6.70E+00 4.40E+01 AL 5 L9345-01 6/1/2005 Sb-125 2.OOE+00 1.30E+01 4.80E+01 U AL 5 L9345-01 6/1/2005 Se-75 3.1 OE+00 5.1OE+00 1.80E+01 L9345-01 6/1/2005 Zn-65 2.90E+01 1.80E+01 5.90E+01 AL AL AL 5

5 L9345-01 6/1/2005 LI 0204-0111/21/2005 Zr-95 AcTh-228

-6.40E+00

-8.50E+01 9.40E+00 4.40E+01 3.90E+01 1.90E+02 E

AL L10204-0111/21/2005 Ag-108m -1.67E+01 9.40E+00 3.70E+01 AL L10204-0111/21/2005 Ag-1I Om -3.OOE+0O 1.60E+01 6.10E+01 AL L10204-0111/21/2005 Ba-140 4.80E+01 3.00E+01 9.60E+01 AL L10204-0111/21/2005 Be-7 1.80E+02 1.20E+02 4.10E+02 AL LI 0204-0111/21/2005 Ce-141 4.OOE+00 1.30E+01 4.70E+01 AL LI 0204-0111/21/2005 Ce-144 4.40E+01 4.30E+01 1.40E+02 AL LI 0204-0111/21/2005 Co-57 -6.50E+00 4.80E+00 1.80E+01 AL LI 0204-0111/21/2005 Co-58 5.OOE+00 1.30E+01 4.70E+01 AL LI 0204-0111/21/2005 Co-60 -2.50E+01 1.60E+01 6.70E+01 AL AL AL L10204-0111/21/2005 LI 0204-0111/21/2005 LI 0204-0111/21/2005 Cr-51 Cs-134 Cs-137

-1.OOE+01

-1.OOE+01 6.OOE+00 9.1OE+01 1.30E+01 1.20E+01 3.40E+02 5.OOE+01 4.40E+01 LI 1.30E+02 AL AL AL LI 0204-0111/21/2005 L10204-0111/21/2005 LI 0204-0111/21/2005 Fe-59 1-131 K-40 1.20E+01 3.90E+01 9.45E+03 3.50E+01 3.20E+01 5.80E+02 1.1 OE+02 6.70E+02

L AL L10204-0111/21/2005 La-140 5.50E+01 3.40E+01 1.10E+02 AL L10204-0111/21/2005 Mn-54 4.OOE+00 1.20E+01 4.50E+01 U

AL L10204-0111/21/2005 Nb-95 -3.20E+01 2.20E+01 8.40E+01 AL L10204-0111/21/2005 Ru-103 -3.1 OE+01 1.20E+01 5.20E+01 AL AL LI 0204-0111/21/2005 L10204-0111/21/2005 LI 0204-0111/21/2005 Ru-106 Sb-124 Sb-125

-1.60E+01 3.80E+01

-1.1OE+01 9.40E+01 3.30E+01 2.80E+01 3.60E+02 1.20E+02 1.1OE+02 U

AL

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kq) (pCi/kq) (pCilkq)

IL AL 5 L10204-0111/21/2005 Se-75 -4.80E+00 9.80E+00 3.70E+01 1.21 E+02 6.80E+01 2.20E+02 L AL AL AL 5

5 55 LI 0204-0111/21/2005 LI 0204-0111/21/2005 L9345-02 6/1/2005 Zn-65 Zr-95 AcTh-228 5.1 OE+01 1.OOE+00 2.60E+01 2.40E+01 8.1OE+01 9.50E+01 AL 55 L9345-02 6/1/2005 Ag-108m -5.1 OE+00 3.80E+00 1.70E+01 L AL AL 55 55 L9345-02 6/1/2005 L9345-02 6/1/2005 Ag-11Om Ba-140 2.20E+00 1.60E+01 8.40E+00 1.60E+01 3.30E+01 6.OOE+01 AL 55 L9345-02 6/1/2005 Be-7 9.70E+01 6.OOE+01 2.00E+02 L AL AL 55 55 L9345-02 6/1/2005 L9345-02 6/1/2005 L9345-02 6/1/2005 Ce-141 Ce-144 Co-57

-7.30E+00

-5.10E+01

-9.OOE-01 8.1 OE+00 1.90E+01 2.10E+00 3.10E+01 8.30E+01 8.20E+00 AL 55 U AL AL AL 55 55 55 L9345-02 6/1/2005 L9345-02 6/1/2005 L9345-02 6/1/2005 Co-58 Co-60 Cr-51

-1.16E+01 5.1 OE+00 7.OOE+00 7.50E+00 9.30E+00 5.1 OE+01 3.40E+01 3.40E+01 1.90E+02 AL 55 L9345-02 6/1/2005 Cs-134 -6.30E+00 4.90E+00 2.40E+OI L AL AL 55 55 L9345-02 6/1/2005 L9345-02 6/1/2005 Cs-137 Fe-59 6.80E+00

-5.20E+01 5.20E+00 2.90E+01 I.80E+0OI 1.30E+02 AL 55 L9345-02 6/1/2005 1-131 -1.1 OE+01 2.70E+01 1.10E+02 AL 55 L9345-02 6/1/2005 K-40 5.47E+03 3.60E+02 3.30E+02:

AL 55 L9345-02 6/1/2005 La-140 1.90E+01 1.90E+01 6.90E+0OI AL 55 L9345-02 6/1/2005 Mn-54 -7.30E+00 7.20E+00 3.00E+0I L AL AL AL 55 55 55 L9345-02 6/1/2005 L9345-02 6/1/2005 L9345-02 6/1/2005 Nb-95 Ru-103 Ru-106 6.80E+00

-1.60E+01 O.OOE+00 7.50E+00 6.30E+00 4.30E+01 2.70E+Ol 3.00E+0OI 1.70E+02 AL 55 L9345-02 6/1/2005 Sb-124 -1.50E+01 1.1 OE+01 6.90E+0OI AL 55 L9345-02 6/1/2005 Sb-125 8.OOE+00 1.30E+01 4.80E+0OI AL 55 L9345-02 6/1/2005 Se-75 -1.40E+00 5.80E+00 2.20E+0OI AL 55 L9345-02 6/1/2005 Zn-65 -1.20E+01 1.90E+01 7.80E+0OI AL 55 L9345-02 6/1/2005 Zr-95 1.20E+01 1.40E+01 5.OOE+O I AL 55 LI 0204-0211/21/2005 AcTh-228 5.20E+01 4.80E+01 1.60E+0:2 AL 55 LI 0204-0211/21/2005 Ag-108m 4.90E+00 8.80E+00 3.1 OE+O I AL 55 LI 0204-0211/21/2005 Ag-110m -6.OOE+00 1.60E+01 6.40E+O I AL 55 LI 0204-0211/21/2005 Ba-140 O.OOE+00 2.80E+01 1.1 OE+0.2 AL 55 LI 0204-0211/21/2005 Be-7 O.OOE+00 1.20E+02 4.20E+02 AL 55 L10204-0211/21/2005 Ce-141 -4.30E+01 1.60E+01 6.1 OE+O I AL 55 LI 0204-0211/21/2005 Ce-144 2.60E+01 4.80E+01 1.70E+02 AL 55 LI 0204-0211/21/2005 Co-57 1.OOE+00 6.OOE+00 2.1OE+01 AL 55 L1I0204-0211/21/2005 Co-58 -2.OOE+01 1.40E+01 5.80E+O I AL 55 LI 0204-0211/21/2005 Co-60 -2.40E+01 1.80E+01 7.20E+O I AL 55 LI 0204-0211/21/2005 Cr-51 -3.00E+01 1.20E+02 4.20E+0:2 AL 55 L10204-0211/21/2005 Cs-134 4.OOE+00 1.20E+01 4.40E+O I AL 55 L10204-0211/21/2005 Cs-137 -6.OOE+00 1.30E+01 5.OOE+O I AL 55 L10204-0211/21/2005 Fe-59 1.20E+01 3.30E+01 1.20E+0'2 AL 55 L10204-0211/21/2005 1-131 7.80E+01 4.30E+01 1.40E+0:2 AL 55 LI 0204-0211/21/2005 K-40 6.27E+03 5.00E+02 8.OOE+02 AL 55 LI 0204-0211/21/2005 La-140 O.OOE+00 3.20E+01 1.30E+0:2 AL 55 LI 0204-0211/21/2005 Mn-54 -2.50E+01 1.20E+01 5.10E+0 1 AL 55 L10204-0211/21/2005 Nb-95 -2.50E+01 1.70E+01 7.OOE+O I AL 55 LI 0204-0211/21/2005 Ru-103 -9.OOE+00 1.30E+01 5.00E+0 1

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-100-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 J SAMPLE END CONC STD.DEV. MDC TYPE AL STATION 55 LSN DATE LI 0204-0211/2112005 NUCLIDE Ru-1 06 (pCi/kg) 1.40E+02 (pCi/kg) 1.1 OE+02 (pCi/kg) 3.60E+02 J

AL 55 LI 0204-0211/21/2005 Sb-1 24 -1.90E+01 2.70E+01 1.20E+02 AL 55 Li 0204-0211/21/2005 Sb-I1 25 1.1OE+01 3.20E+01 1.10E+02 h AL 55 LI 0204-0211/21/2005 Se-75 -6.OOE+00 1.1OE+01 4.1 OE+01 AL 55 LI 0204-0211/21/2005 Zn-65 6.30E+01 7.70E+01 2.60E+02 AL 55 LI 0204-0211/21/2005 Zr-95 -1.30E+01 2.20E+01 8.70E+01 Li L

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement Li

-101-L

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L8724-01 1/19/2005 GROSS BETA 1.91 E-02 1.40E-03 3.00E-03

L AP AP L8796-01 2/2/2005 L8844-01 2/16/2005 GROSS BETA GROSS BETA 2.08E-02 1.51 E-02 1.40E-03 1.40E-03 3.10E-O, 3.50E-03 AP L8904-01 312/2005 GROSS BETA 1.72E-02 1.40E-03 3.502-03

AP L8979-01 3/16/2005 GROSS BETA 1A2E-02 1.40E-03 3.50E-03

AP L9037-01 3/30/2005 GROSS BETA 1.23E-02 1.30E-03 3.40E-03

AP L9122-01 4/13/2005 GROSS BETA 9.20E-03 1.30E-03 3.60E-03

L9205-01 4/27/2005 GROSS BETA 1.02E-02 1.30E-03 3.50E-03

L AP AP L9262-01 5/11/2005 GROSS BETA 5.00E-03 1.20E-03 3.50E-03

AP L9325-01 5/25/2005 GROSS BETA 6.90E-03 1.20E-03 3.402-03

L AP AP AP L9398-01 6/8/2005 L9472-01 6/22/2005 L9530-01 7/6/2005 GROSS BETA GROSS BETA GROSS BETA 9.50E-03 7.90E-03 2.05E-02 1.1 OE-03 1.20E-03 1.50E-03 2.90E-03 3.20E-03 3.50E-03 AP L9622-01 7/20/2005 GROSS BETA 11.36E-02 1.30E-03 3.20E-03

AP L9700-01 8/3/2005 GROSS BETA 1.66E-02 1.40E-03 3.40E-03

AP L9713-01 8/8/2005 GROSS BETA 1.55E-02 2.20E-03 6.20E-0:3

AP L9764-01 8/17/2005 GROSS BETA 3.14E-02 2.30E-03 4.80E-0:3

AP L9825-01 8/31/2005 GROSS BETA 1.28E-02 1.30E-03 3.00E-0:3

AP L9869-01 9/14/2005 GROSS BETA 1.78E-02 1.50E-03 3.40E-0:3

AP L9962-01 9/28/2005 GROSS BETA 1.81 E-02 1.50E-03 3.30E-0:3

AP I L10017-0110/12/2005 GROSS BETA 1.24E-02 1.30E-03 3.40E-03

AP I L10102-0110/26/2005 GROSS BETA 5.75E-03 7.50E-04 2.10E-03

AP I L10171-01 11/9/2005 GROSS BETA 1.83E-02 1.40E-03 3.20E-0:3

AP 1 Li 0223-0111/22/2005 GROSS BETA 1.88E-02 1.50E-03 3.60E-03

AP ~1 L10267-01 12/7/2005 GROSS BETA 1.54E-02 1.30E-03 3.00E-03

AP I L10314-0112/21/2005 GROSS BETA 2.38E-02 1.40E-03 2.80E-0 3

AP L9096-01 3/30/2005 AcTh-228 1.50E-03 1.70E-03 6.00E-03 AP L9096-01 3/30/2005 Ag-108m 8.OOE-05 3.60E-04 1.40E-03 AP L9096-01 3/30/2005 Ag-t10m -1.60E-04 4.80E-04 2.30E-03 AP L9096-01 3/30/2005 Ba-140 -1.28E-02 9.50E-03 5.10E-02 AP L9096-01 3/30/2005 Be-7 1.24E-01 1.80E-02 3.80E-02

AP L9096-01 3/30/2005 Ce-141 -4.1OE-03 1.80E-03 7.30E-03 AP L9096-01 3/30/2005 Ce-144 -7.OOE-04 2.20E-03 8.202-03 AP L9096-01 3/30/2005 Co-57 2.20E-04 2.50E-04 8.70E-04 AP L9096-01 3/30/2005 Co-58 1.OOE-03 1.OOE-03 3.70E-03 AP L9096-01 3/30/2005 Co-60 -6.40E-04 5.90E-04 2.80E-03 AP L9096-01 3/30/2005 Cr-51 1.50E-02 1.40E-02 4.90E-02 AP L9096-01 3/30/2005 Cs-1 34 -3.80E-04 4.1OE-04 2.00E-03 AP L9096-01 3/3012005 Cs-137 -7.30E-04 8.10E-04 3.20E-03 AP L9096-01 3/3012005 Fe-59 -2.40E-03 2.1 OE-03 1.10E-02 AP L9096-01 3/30/2005 1-131 2.00E-03 2.50E-02 9.60E-02 AP L9096-01 3/30/2005 K-40 4.10E-03 6.80E-03 2.60E-02 AP L9096-01 3/30/2005 La-140 -1.50E-02 1.1OE-02 5.90E-02 AP L9096-01 3/30/2005 Mn-54 -1 .90E-04 4.902-04 2.1OE-03 AF L9096-01 3/30/2005 Nb-95 -3.OOE-04 1.60E-03 6.40E-03 AP L9096-01 3/30/2005 Ru-103 8.00E-04 1.30E-03 4.70E-03 AF L9096-01 3/30/2005 Ru-106 -3.40E-03 4.10E-03 1.80E-02 AF L9096-01 3/30/2005 Sb-124 -2.50E-03 2.80E-03 1.30E-02 AF L9096-01 3/30/2005 Sb-125 -1.51 E-03 9.40E-04 4.40E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-102-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCilm3)

AP L9096-01 3130/2005 Se-75 -8.20E-04 7.30E-04 2.90E-03 LI AP L9096-01 3/30/2005 Zn-65 -2.40E-03 1.40E-03 6.70E-03 AP L9096-01 3/30/2005 Zr-95 1.OOE-04 1.70E-03 6.60E-03 AP L9559-01 7/6/2005 AcTh-228 -6.OOE-04 1.40E-03 5.80E-03 AP L9559-01 7/6/2005 Ag-108m 6.OOE-04 2.90E-04 9.OOE-04 AP L9559-01 7/6/2005 Ag-1Om 3.30E-04 4.10E-04 1.50E-03 AP L9559-01 7/6/2005 Ba-140 -1.97E-02 8.OOE-03 4.60E-02 AP L9559-01 7/6/2005 Be-7 6.60E-02 1.20E-02 2.80E-02 1.50E-03 5.80E-03 II AP L9559-01 7/6/2005 Ce-141 -1.1OE-03 AP L9559-01 7/6/2005 Ce-144 -2.OOE-03 1.40E-03 5.90E-03 AP L9559-01 7/6/2005 Co-57 1.1OE-04 1.90E-04 6.80E-04 I

AP L9559-01 7/6/2005 Co-58 -1.11 E-03 4.90E-04 2.70E-03 AP L9559-01 7/6/2005 CO-60 -2.OOE-05 2.20E-04 1.1 OE-03 6-4 AP L9559-01 7/6/2005 Cr-51 -1.10E-02 1.20E-02 4.90E-02 AP L9559-01 7/6/2005 Cs-134 -1.60E-04 2.90E-04 1.40E-03 AP L9559-01 7/6/2005 Cs-137 -5.OOE-05 2.40E-04 1.1 OE-03 AP L9559-01 7/6/2005 Fe-59 1.20E-03 1.70E-03 6.60E-03 AP L9559-01 7/6/2005 1-131 3.20E-02 2.OOE-02 6.50E-02 AP L9559-01 7/6/2005 K-40 2.60E-03 4.90E-03 1.90E-02 AP L9559-01 7/6/2005 La-140 -2.26E-02 9.20E-03 5.30E-02 AP L9559-01 7/6/2005 Mn-54 -2.30E-04 3.40E-04 1.50E-03 AP AP AP L9559-01 L9559-01 L9559-01 7/6/2005 7/6/2005 7/6/2005 Nb-95 Ru-1 03 Ru-1 06 4.OOE-04 4.50E-04

-6.OOE-04 1.20E-03 8.40E-04 2.60E-03 4.80E-03 3.20E-03 1.10E-02 12 AP AP AP L9559-01 L9559-01 L9559-01 7/6/2005 7/6/2005 7/6/2005 Sb-I 24 Sb-I1 25 Se-75 O.OOE+00

-3.80E-04

-1.80E-04 1.90E-03 7.60E-04 5.60E-04 8.50E-03 3.20E-03 2.1 OE-03 Li AP L9559-01 7/6/2005 Zn-65 -1.46E-03 6.50E-04 3.80E-03 AP AP L9559-01 L10029-01 7/6/2005 9/28/2005 Zr-95 AcTh-228

-1.05E-03

-2.40E-04 9.70E-04 9.30E-04 4.60E-03 4.40E-03

[2 AP LI 0029-01 9/28/2005 Ag-108m -2.80E-04 3.OOE-04 1.30E-03 AP AP LI 0029-01 L1 0029-01 LI 0029-01 9/28/2005 9/28/2005 9/28/2005 Ag-I Om Ba-140 Be-7 1.36E-03 3.60E-03 8.30E-02 6.50E-04 8.OOE-03 1.40E-02 1.80E-03 3.30E-02 3.30E-02

Li AP AP AP AP L10029-01 LI 0029-01 LI 0029-01 9/28/2005 9/28/2005 9/28/2005 Ce-141 Ce-144 Co-57 6.00E-04

-1.80E-03

-1.30E-04 1.50E-03 1.90E-03 2.1 OE-04 5.40E-03 7.60E-03 8.30E-04 Li 7.00E-04 2.90E-03 LI AP LI 0029-01 9/28/2005 Co-58 -3.00E-05 AP LI 0029-01 9/28/2005 Co-60 -4.30E-04 4.50E-04 2.20E-03 AP L10029-01 9/28/2005 Cr-51 9.OOE-03 1.40E-02 4.90E-02 AP LI 0029-01 9/28/2005 Cs-1 34 -3.80E-04 4.60E-04 2.OOE-03 AP L10029-01 9/28/2005 Cs-1 37 -4.OOE-04 3.90E-04 1.70E-03 2.20E-03 1.1 OE-02 AP AP AP LI 0029-01 LI 0029-01 L1 0029-01 9/28/2005 9/28/2005 9/28/2005 Fe-59 1-131 K-40

-4.1OE-03 O.OOE+00

-4.20E-03 2.60E-02 4.70E-03 I.OOE-01 2.20E-02 Ui AP LI 0029-01 9/28/2005 La-140 4.1 OE-03 9.1 OE-03 3.80E-02 AP L10029-01 9/28/2005 Mn-54 -9.10E-04 5.30E-04 2.40E-03 AP L10029-01 9/28/2005 Nb-95 -1.50E-03 9.90E-04 5.OOE-03 AP L10029-01 9/28/2005 Ru-103 -7.90E-04 9.50E-04 4.10E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-103-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYP._ STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3) bIi AP 1 L10029-01 9/28/2005 Ru-106 -9.70E-03 4.OOE-03 1.90E-02 L10029-01 9/28/2005 -9.OOE-04 2.30E-03 1.1OE-02 L AP 1 Sb-124 AP 1 L10029-01 9/28/2005 Sb-125 -2.20E-04 9.30E-04 3.70E-03 AP 1 L10029-01 9/28/2005 Se-75 1.46E-03 6.30E-04 1.90E-03 AP 1 L10029-01 9/28/2005 Zn-65 -3.40E-04 9.OOE-04 4.1OE-03 AP LI 0029-0' 1 9/28/2005 Zr-95 -1.1 OE-03 1.20E-03 5.50E-03 AP LI 0467-0' 1 1/4/2006 AcTh-228 2.80E-03 1.50E-03 4.60E-03 AP LI 0467-0' 1 1/4/2006 Ag-1 08m 2.90E-04 2.60E-04 9.1OE-04 L AP AP LI 0467-011 1/4/2006 LI 0467-0' 1 1/4/2006 LI 0467-0' I 1/4/2006 Ag-11 Om Ba-140 Be-7

-1.60E-04

-1.34E-02 7.90E-02 4.20E-04 6.70E-03 1.30E-02 1.90E-03 4.OOE-02 3.1OE-02 AP AP LI 0467-0' 1 1/4/2006 Ce-141 -4.1 OE-03 1.70E-03 6.80E-03 AP LI 0467-0' 1 1/4/2006 Ce-144 -1.70E-03 1.70E-03 6.80E-03 AP LI 0467-011 1/4/2006 Co-57 -1.80E-04 1.80E-04 7.30E-04 AP LI 0467-011 1/4/2006 Co-58 -6.30E-04 7.20E-04 3.1 OE-03 AP LI 0467-01 1 1/4/2006 Co-60 -5.20E-04 4.50E-04 2.1 OE-03 AP LI 0467-011 1/4/2006 Cr-51 1.30E-02 1.20E-02 4.OOE-02 AP L10467-011 1/4/2006 Cs-134 -3.OOE-05 3.30E-04 1.40E-O.

AP LI 0467-011 1/4/2006 Cs-1 37 -4.80E-04 3.60E-04 1.60E-O:.

AP LI 0467-011 1/4/2006 Fe-59 -1.20E-03 1.70E-03 7.80E-03 AP LI 0467-011 1/4/2006 1-131 -1.00E-02 2.70E-02 1.OOE-01 AP LI 0467-011 1/4/2006 K-40 7.20E-03 5.60E-03 I.90E-02 AP LI 0467-011 1/4/2006 La-140 -1.54E-02 7.70E-03 4.60E-02 AP LI 0467-0111/4/2006 Mn-54 O.OOE+00 3.70E-04 1.50E-03 AP L10467-01 1/4/2006 Nb-95 4.OOE-04 1.40E-03 5.50E-1; AP L10467-01 1/4/2006 Ru-1 03 2.09E-03 9.1 OE-04 2.60E-0l AP LI 0467-01 1/4/2006 Ru-106 -3.60E-03 3.30E-03 1.40E-02 AP L10467-01 1/4/2006 Sb-124 -2.30E-03 1.30E-03 8.20E-03 AP L10467-01 1/4/2006 Sb-125 3.60E-04 7.70E-04 2.90E-03 AP LI 0467-01 1/4/2006 Se-75 -7.OOE-04 4.90E-04 2.OOE-0O AP L10467-01 1/4/2006 Zn-65 2.80E-04 8.40E-04 3.40E-03 AP LI 0467-01 1/4/2006 Zr-95 -7.OOE-04 1.1OE-03 4.80E-03 AP L8724-02 1/19/2005 GROSS BETA 1.73E-02 1.50E-03 3.50E-03 AP L8796-02 2/2/2005 GROSS BETA 2.27E-02 1.60E-03 3.60E-03 AP L8844-02 2/16/2005 GROSS BETA 1.56E-02 1.60E-03 4.I0E-03 AP L8904-02 3/2/2005 GROSS BETA 1.49E-02 1.60E-03 4.20E-03 AP L8979-02 3/16/2005 GROSS BETA 1.54E-02 1.60E-03 4.10E-03 AP L9037-02 3/30/2005 GROSS BETA 1.40E-02 1.50E-03 4.00E-03 AP L9122-02 4/13/2005 GROSS BETA 9.80E-03 1.50E-03 4.30E-03 AP L9205-02 4/27/2005 GROSS BETA 1.36E-02 1.60E-03 4.00E-03 AP L9262-02 5/11/2005 GROSS BETA 6.50E-03 1.40E-03 4.1OE-03 AP L9325-02 5/25/2005 GROSS BETA 7.1OE-03 1.30E-03 3.70E-03 AP L9398-02 6/8/2005 GROSS BETA 8.50E-03 1.20E-03 3.10E-03 AP L9472-02 6/22/2005 GROSS BETA 7.1 OE-03 1.10E-03 3.20E-03 AP L9530-02 7/6/2005 GROSS BETA 1.78E-02 1.50E-03 3.50E-0:3 AP L9622-02 7/20/2005 GROSS BETA 1.27E-02 1.30E-03 3.20E-0:3 AP L9700-02 8/3/2005 GROSS BETA 1.70E-02 1.40E-03 3.40E-0:3 AP L9764-02 8/17/2005 GROSS BETA 2.74E-02 1.60E-03 2.90E-0:3 AP L9825-02 8/31/2005 GROSS BETA 1.34E-02 1.30E-03 3.00E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-104-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP 2 L9869-02 9/14/2005 GROSS BETA 1.91E-02 1.50E-03 3.40E-03 AP 2 L9962-02 9/28/2005 GROSS BETA I.72E-02 1.40E-03 3.30E-03 AP 2 LI 0017-0210/12/2005 GROSS BETA 1.22E-02 1.30E-03 3.50E-03 AP 2 L10102-0210(26/2005 GROSS BETA 4.90E-03 7.40E-04 2.1OE-03 AP 2 L10171-02 11/9/2005 GROSS BETA 1.95E-02 1.40E-03 3.20E-03 AP AP 2

2 L10223-0211/22/2005 L10267-02 12/7/2005 GROSS BETA GROSS BETA 1.43E-02 1.46E-02 I.50E-03 1.30E-03 3.60E-03 3.OOE-03 L

AP 2 LI 0314-0212/21/2005 GROSS BETA 2.42E-02 1.50E-03 2.90E-03 AP L9096-02 3130/2005 AcTh-228 -1.20E-03 2.50E-03 1.OOE-02 AP L9096-02 3/30/2005 Ag-108m -2.80E-04 3.60E-04 1.50E-03 AP L9096-02 3/30/2005 Ag-i 1Om -3.OOE-04 1.1OE-03 4.30E-03 ,

AP L9096-02 3/30/2005 Ba-140 -5.OOE-03 1.10E-02 5.40E-02 AP L9096-02 3/30/2005 Be-7 1.03E-01 2.OOE-02 4.90E-02 AP L9096-02 3/30/2005 Ce-141 2.OOE-03 1.80E-03 6.1 OE-03 AP L9096-02 3/30/2005 Ce-144 4.60E-03 2.50E-03 8.20E-03 AP L9096-02 3130/2005 Co-57 -1.40E-04 3.OOE-04 I.1OE-03 AP L9096-02 3130/2005 Co-58 -1.80E-04 9.50E-04 4.OOE-03 AP L9096-02 3130/2005 Co-60 -7.OOE-05 7.30E-04 3.10E-03 AP L9096-02 3/30/2005 Cr-51 6.00E-03 1.60E-02 6.00E-02 AP L9096-02 3130/2005 Cs-1 34 6.30E-04 6.50E-04 2.30E-03 AP L9096-02 3/30/2005 Cs-137 -3.OOE-04 I.OOE-03 3.90E-03 L9096-02 3/30/2005 5.60E-03 2.60E-03 6.90E-03 AP AP L9096-02 3/30/2005 Fe-59 1-131 1.OOE-03 3.50E-02 1.30E-01 L AP L9096-02 3/30/2005 K-40 1.OOE-04 6.40E-03 2.70E-02 AP L9096-02 3/30/2005 La-140 -6.OOE-03 1.30E-02 6.20E-02 AP L9096-02 3/30/2005 Mn-54 5.90E-04 5.60E-04 2.OOE-03 AP L9096-02 3/30/2005 Nb-95 1.40E-03 1.30E-03 4.90E-03 AP AP AP L9096-02 3/30/2005 L9096-02 3/30/2005 L9096-02 3/30/2005 Ru-1 03 Ru-106 Sb-124

-1.OOE-03 5.30E-03

-2.OOE-04 1.60E-03 5.70E-03 2.60E-03 6.40E-03 2.OOE-02 1.20E-02 Li AP L9096-02 3/30/2005 Sb-125 -3.OOE-04 1.40E-03 5.50E-03 AP AP L9096-02 3/30/2005 L9096-02 3/30/2005 Se-75 Zn-65

-7.60E-04

-1.40E-03 7.90E-04 1.40E-03 3.20E-03 6.601E-03 Li AP L9096-02 3/30/2005 Zr-95 7.OOE-04 1.90E-03 7.20E-03 AP L9559-02 7/6/2005 AcTh-228 1.30E-03 1.20E-03 4.30E-03 AP L9559-02 7/6/2005 Ag-108m 1.90E-04 2.50E-04 9.20E-04 AP L9559-02 7/6/2005 Ag-1 1Oim -9.1OE-04 6.00E-04 2.90E-03 AP L9559-02 7/6/2005 Ba-140 7.20E-03 8.80E-03 3.30E-02 AP L9559-02 7/6/2005 Be-7 1.02E-01 1.50E-02 3.OOE-02 AP L9559-02 7/6/2005 Ce-141 -3.OOE-04 1.70E-03 6.1OE-03 AP L9559-02 7/6/2005 Ce-144 4.OOE-04 1.80E-03 6.70E-03 AP L9559-02 7/6/2005 Co-57 6.90E-04 2.30E-04 6.60E-04 AP L9559-02 7/6/2005 Co-58 -1.18E-03 6.OOE-04 3.10E-03 AP L9559-02 7/6/2005 Co-60 3.10E-04 2.20E-04 4.20E-04 AP L9559-02 7/6/2005 Cr-51 O.OOE+00 1.40E-02 5.20E-02 AP L9559-02 7/6/2005 Cs-1 34 1.1OE-04 4.30E-04 1.70E-03 AP L9559-02 7/6/2005 Cs-1 37 -5.1OE-04 3.50E-04 1.60E-03 AP L9559-02 7/6/2005 Fe-59 -1.30E-03 1.60E-03 8.OOE-03 AP L9559-02 7/6/2005 1-131 1.50E-02 2.30E-02 8.40E-02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-105-

L l L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYP _ STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP 2 L9559-02 7/6/2005 K-40 1.23E-02 6.80E-03 2.20E-02 1

L AP AP 2

2 L9559-02 L9559-02 7/6/2005 7/6/2005 7/6/2005 La-140 Mn-54 Nb-95 8.OOE-03

-2.002-05

-1.00E-03 1.OOE-02 4.1 OE-04 1.10E-03 3.80E-02 1.70E-03 5.20E-03 AP 2 L9559-02 4.1 OE-03 L AP AP AP 2

2 2

L9559-02 L9559-02 L9559-02 7/6/2005 7/6/2005 7/6/2005 Ru-103 Ru-I 06 Sb-124

-2.00E-04

-1.20E-03

-1.70E-03 1.00E-03 4.00E-03 1.20E-03 1.60E-02 8.OOE-02 AP 2 L9559-02 7/6/2005 Sb-125 O.OOE+00 7.70E-04 3.10E-03 L AP AP 2

2 L9559-02 L9559-02 7/6/2005 7/6/2005 Se-75 Zn-65

-3.00E-04 3.20E-04 5.50E-04 3.20E-04 2.20E-03 8.60E-04 AP 2 L9559-02 7/6/2005 Zr-95 1.30E-03 1.20E-03 4.10E-03.

L AP AP L10029-02 LI 0029-02 9/28/2005 9/28/2005 AcTh-228 Ag-108m 1.90E-03 1.40E-04 1.90E-04 1.50E-03 2.80E-04 7.00E-04 4.90E-0$S 1.10E-0' 2.70E-03 AP L10029-02 9/28/2005 Ag-11 Om

,I AP LI 0029-02 9/28/2005 Ba-140 3.50E-03 6.1OE-03 2.60E-02 AP L10029-02 9/28/2005 Be-7 8.70E-02 1.60E-02 4.10E-02 AP LI 0029-02 9/28/2005 Ce-141 4.00E-04 1.80E-03 6.30E-03 AP L10029-02 9/28/2005 Ce-144 3.90E-03 2.40E-03 7.80E-03 AP LI 0029-02 9/28/2005 Co-57 4.40E-04 2.50E-04 8.102E-O' AP L10029-02 9/28/2005 Co-58 6.20E-04 8.30E-04 3.00E-03 AP L10029-02 9/28/2005 Co-60 -8.OOE-04 5.20E-04 2.60E-03 AP L10029-02 9/28/2005 Cr-51 O.OOE+00 1.30E-02 5.00E-02 AP L10029-02 9/28/2005 Cs-134 1.50E-04 2.20E-04 9.10E-04 AP L10029-02 9/28/2005 Cs-137 -3.90E-04 3.80E-04 1.70E-03 AP L10029-02 9/28/2005 Fe-59 -2.00E-03 1.80E-03 8.80E-03 AP L10029-02 9/28/2005 1-131 -1.50E-02 2.40E-02 9.80E-02 AP L10029-02 9/28/2005 K-40 -1.OOE-02 6.00E-03 2.80E-02 AP L10029-02 9/28/2005 La-140 4.OOE-03 7.00E-03 3.00E-02 AP LI 0029-02 9/28/2005 Mn-54 -1.16E-03 5.60E-04 2.60E-03 AP L10029-02 9/28/2005 Nb-95 O.OOE+00 1.20E-03 5.00E-03 AP L10029-02 9/28/2005 Ru-103 -1.10E-03 1.10E-03 4.50E-03 AP L10029-02 9/28/2005 Ru-1 06 8.OOE-04 4.30E-03 1.60E-02 AP L10029-02 9/28/2005 Sb-124 9.OOE-04 1.50E-03 6.50E-03 AP LI 0029-02 9/28/2005 Sb-125 1.11 E-03 9.20E-04 3.1 oE-0:3 AP L10029-02 9/28/2005 Se-75 -3.10E-04 5.80E-04 2.30E-0:3 AP L10029-02 9/28/2005 Zn-65 3.00E-04 1.30E-03 5.10E-0:3 AP L10029-02 9/28/2005 Zr-95 2.00E-04 1.OOE-03 4.20E-0:3 AP 2 LI 0467-02 1/4/2006 AcTh-228 1.80E-03 1.20E-03 3.80E-0:3 AP 2 L10467-02 1/4/2006 Ag-108m -I.20E-04 2.70E-04 1.10E-0:3 AP 2 LI 0467-02 1/4/2006 Ag-110m -I.60E-04 5.80E-04 2.40E-0;3 AP 2 L10467-02 1/4/2006 Ba-140 3.40E-03 9.OOE-03 3.70E-0.2 AP 2 L10467-02 1/4/2006 Be-7 7.50E-02 1.30E-02 3.00E-0.2 AP 2 LI 0467-02 1/4/2006 Ce-141 1.202-03 1.60E-03 5.40E-03 AP 2 LI 0467-02 1/4/2006 Ce-144 1.30E-03 1.90E-03 6.50E-03 AP 2 LI 0467-02 1/4/2006 Co-57 5.OOE-05 1.80E-04 6.80E-04 AP 2 L10467-02 1/4/2006 Co-58 -5.90E-04 4.60E-04 2.40E-03 AP 2 LI 0467-02 1/4/2006 Co-60 4.OOE-04 3.20E-04 1.1 0E-03 AP 2 L10467-02 1/412006 Cr-51 1.10E-02 1.20E-02 4.40E-02 AP 2 L10467-02 1/412006 Cs-134 -4.10E-04 3.90E-04 1.80E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-106-

I Seabrook Station Radiological Environmental Monitoring Program Data - 2005 1 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L10467-02 1/4/2006 Cs-137 9.OOE-05 3.50E-04 1.40E-03 AP L10467-02 1/4/2006 Fe-59 -6.OOE-04 2.OOE-03 8.50E-03 AP LI 0467-02 1/4/2006 1-131 -7.50E-02 2.20E-02 1.1 OE-01 AP L10467-02 1/4/2006 K-40 -7.60E-03 3.80E-03 2.OOE-02 AP LI 0467-02 1/4/2006 La-140 4.OOE-03 1.OOE-02 4.20E-02 AP L10467-02 1/4/2006 Mn-54 -2.1 OE-04 2.60E-04 1.30E-03 IL AP L10467-02 1/412006 Nb-95 -1.OOE-03 1.10E-03 5.1 OE-03 AP L10467-02 1/4/2006 Ru-103 4.50E-04 9.20E-04 3.50E-03 AP LI 0467-02 1/4/2006 Ru-1 06 -8.00E-04 3.1 OE-03 1.30E-02 AP LI 0467-02 1/4/2006 Sb-124 3.10E-03 2.20E-03 7.20E-03 AP L10467-02 1/4/2006 Sb-125 0.OOE+00 6.90E-04 2.80E-03 AP L10467-02 1/4/2006 Se-75 9.OOE-05 5.50E-04 2.OOE-03

'-4 AP LI 0467-02 1/4/2006 Zn-65 0.OOE+00 1.20E-03 4.70E-03 AP L10467-02 1/4/2006 Zr-95 4.90E-04 9.30E-04 3.70E-03 AP L8724-03 1/19/2005 GROSS BETA 1.78E-02 1.30E-03 3.OOE-03 I AP L8796-03 2/2/2005 GROSS BETA 2.04E-02 1.40E-03 3.OOE-03 AP L8844-03 2/16/2005 GROSS BETA 1.75E-02 1.40E-03 3.50E-03 AP L8904-03 3/2/2005 GROSS BETA 1.45E-02 1.40E-03 3.50E-03 AP L8979-03 3/16(2005 GROSS BETA 1.41 E-02 1.40E-03 3.40E-03 h-4 AP L9037-03 3/30/2005 GROSS BETA 1.48E-02 1.40E-03 3.40E-03 AP L9122-03 4/13/2005 GROSS BETA 6.OOE-03 1.20E-03 3.60E-03 AP L9205-03 4/27/2005 GROSS BETA 1.43E-02 1.40E-03 3.40E-03 AP L9262-03 5(11/2005 GROSS BETA 7.80E-03 1.20E-03 3.50E-03 AP L9325-03 5/25/2005 GROSS BETA 8.80E-03 1.30E-03 3.60E-03 AP AP L9398-03 6/8/2005 GROSS BETA 1.05E-02 L9472-03 6/22/2005 GROSS BETA 8.50E-03 1.30E-03 1.30E-03 3.50E-03 3.60E-03 LI AP L9530-03 7/6/2005 GROSS BETA 2.OOE-02 1.70E-03 4.10E-03 AP AP L9622-03 7(20/2005 GROSS BETA 1.49E-02 L9700-03 8/3/2005 GROSS BETA 1.81 E-02 1.50E-03 1.60E-03 3.70E-03 3.90E-03 D

AP L9764-03 8/17/2005 GROSS BETA 2.98E-02 1.80E-03 3.50E-03 AP AP L9825-03 8/31/2005 GROSS BETA 1.43E-02 L9869-03 9/14/2005 GROSS BETA 2.60E-02 1.50E-03 1.80E-03 3.50E-03 3.90E-03 U AP L9962-03 9/28/2005 GROSS BETA 2.05E-02 1.70E-03 3.90E-03 AP AP 3

3 L10017-0310/12/2005 GROSS BETA 1.75E-02 L10102-0310/26/2005 GROSS BETA 6.83E-03 1.60E-03 9.OOE-04 1.60E-03 4.OOE-03 2.50E-03 3.70E-03 LI AP 3 L10171-03 11/9/2005 GROSS BETA 2.01 E-02 AP AP AP 3

3 3

LI 0223-0311/22/2005 GROSS BETA L10267-03 12/7/2005 GROSS BETA 1.64E-02 Li 0314-0312/21/2005 GROSS BETA 2.93E-02 1.66E-02 1.70E-03 1.50E-03 1.80E-03 4.10E-03 3.70E-03 3.40E-03 L

AP AP AP 3

3 3

L9096-03 3/30/2005 AcTh-228 L9096-03 3/30/2005 Ag-108m L9096-03 3/30/2005 Ag-110m 1.20E-03

-2.70E-04

-1.80E-04 1.30E-03 3.1 OE-04 3.20E-04 4.70E-03 1.30E-03 1.70E-03 L

AP 3 L9096-03 3(30/2005 Ba-140 0.OOE+00 4.70E-03 2.50E-02 1 I AP 3 L9096-03 3/30/2005 Be-7 1.05E-01 1.40E-02 2.80E-02 AP 3 L9096-03 3/30/2005 Ce-141 2.70E-03 1.50E-03 4.80E-03 AP 3 L9096-03 3/30/2005 Ce-144 2.OOE-03 2.1 OE-03 7.20E-03 AP 3 L9096-03 3/30/2005 Co-57 2.30E-04 2.40E-04 8.40E-04 AP 3 L9096-03 3/30/2005 Co-58 -6.40E-04 5.OOE-04 2.60E-03 AP 3 L9096-03 3/30/2005 Co-60 -2.OOE-04 3.OOE-04 1.60E-03 I I

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-107-i-

S L Seabrook Station Radiological Environmental Monitoring.Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/rm3) (pCilm3)

AP 3 L9096-03 3/30/2005 Cr-51 -2.OOE-03 1.20E-02 4.60E-02 L AP AP 3

3 3

L9096-03 L9096-03 L9096-03 3/30/2005 3/30/2005 3/3012005 Cs-1 34 Cs-137 Fe-59 5.1 OE-04

-2.00E-05 1.90E-03 3.00E-04 4.20E-04 1.10E-03 8.60E-04 1.70E-03 1.70E-03 AP AP 3 L9096-03 3/30/2005 1-131 5.OOE-03 2.10E-02 8.00E-02 AP 3 L9096-03 3/30/2005 K-40 -1.OOE-03 5.30E-03 2.20E-02 L AP 3 L9096-03 3/30/2005 La-140 O.OOE+0O 5.40E-03 2.80E-02 AP 3 L9096-03 3/30/2005 Mn-54 I.20E-04 4.OOE-04 1.60E-03 L AP AP 3

3 L9096-03 L9096-03 3/30/2005 3/30/2005 Nb-95 Ru-1 03

-1.70E-03 1.87E-03 1.1OE-03 8.70E-04 5.20E-0:3 2.50E-0:3 AP 3 L9096-03 3/30/2005 Ru-106 O.OOE+00 3.70E-03 1.50E-O2 U AP AP 3

3 L9096-03 L9096-03 3/30/2005 3/30/2005 Sb-124 Sb-125 Se-75 1.70E-03

-1.68E-03

-2.OOE-04 2.40E-03 8.90E-04 5.30E-04 9.00E-03 4.10E-0:3 2.10E-03 AP 3 L9096-03 3/30/2005 L AP AP AP 3

3 3

L9096-03 L9096-03 L9559-03 3/30/2005 3/30/2005 7/6/2005 Zn-65 Zr-95 AcTh-228 9.60E-04 6.00E-04

-1.90E-03 7.1OE-04 1.1OE-03 1.30E-03 2.40E-0:3 4.30E-0:3 6.20E-0:3 AP 3 L9559-03 7/6/2005 Ag-108m 1.90E-04 2.1OE-04 7.70E-04 AP 3 L9559-03 7/612005 Ag-110m 1.80E-04 4.00E-04 1.70E-0:3 AP 3 L9559-03 7/6/2005 Ba-140 7.OOE-03 9.90E-03 3.80E-0;2 AP 3 L9559-03 7/6/2005 Be-7 8.50E-02 1.30E-02 2.40E-0.2 AP 3 L9559-03 716/2005 Ce-141 -3.OOE-04 1.50E-03 5.70E-03 AP 3 L9559-03 7/6/2005 Ce-144 -1.20E-03 1.70E-03 6.60E-03 AP 3 L9559-03 7/6/2005 Co-57 -2.OOE-05 1.90E-04 7.30E-04 AP 3 L9559-03 7/6/2005 Co-58 8.90E-04 6.60E-04 2.20E-03 AP 3 L9559-03 7/6/2005 Co-60 1.20E-04 3.60E-04 1.50E-03 AP 3 L9559-03 7/6/2005 Cr-51 -2.80E-02 1.20E-02 5.50E-02 AP 3 L9559-03 7/6/2005 Cs-134 2.70E-04 2.80E-04 1.00E-03 AP 3 L9559-03 7/6/2005 Cs-137 6.00E-05 2.30E-04 9.80E-04 AP 3 L9559-03 7/6/2005 Fe-59 6.60E-04 6.60E-04 1.80E-03 AP 3 L9559-03 7/6/2005 1-131 1.OOE-02 2.10E-02 7.80E-02 AP 3 L9559-03 7/6/2005 K-40 -6.OOE-03 4.70E-03 2.20E-02 AP 3 L9559-03 7/6/2005 La-140 8.OOE-03 1.10E-02 4.40E-02 AP 3 L9559-03 716/2005 Mn-54 6.OOE-05 3.1 0E-04 1.30E-03 AP 3 L9559-03 7/6/2005 Nb-95 7.OOE-04 1.30E-03 4.80E-03 AP 3 L9559-03 7/6/2005 Ru-1 03 -4.80E-04 7.60E-04 3.40E-03 AP 3 L9559-03 7/6/2005 Ru-106 1.20E-03 3.10E-03 1.20E-02 AP 3 L9559-03 7/6/2005 Sb-I124 2.50E-03 1.90E-03 6.20E-03 AP 3 L9559-03 7/6/2005 Sb-125 4.1OE-04 8.10E-04 3.10E-03 AP 3 L9559-03 7/6/2005 Se-75 -5.80E-04 6.00E-04 2.40E-03 AP 3 L9559-03 7/6/2005 Zn-65 3.10E-04 8.30E-04 3.40E-03 AP 3 L9559-03 7/6/2005 Zr-95 -4.00E-04 1.10E-03 4.70E-03 AP 3 LI 0029-03 9/28/2005 AcTh-228 2.70E-03 1.50E-03 4.30E-03 AP 3 LI 0029-03 9128/2005 Ag-108m 4.1OE-04 3.80E-04 1.30E-03 AF 3 Li0029-03 9/28/2005 Ag-11m 9.00E-04 9.00E-04 3.20E-03 AF 3 L10029-03 9/28/2005 Ba-140 4.1 OE-03 9.20E-03 3.80E-02 AF 3 L10029-03 9/28/2005 Be-7 8.20E-02 1.50E-02 3.50E-02 AP 3 L10029-03 9/2812005 Ce-141 -1.10E-03 2.00E-03 7.50E-03 AF 3 LI 0029-03 9/28/2005 Ce-144 -2.10E-03 2.40E-03 9.20E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-108-

I)

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 .

SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE fipCi/m3) (pCVm3) (pCi/m3)

AP 3 LI 0029-03 9/28/2005 Co-57 2.40E-04 2.70E-04 9.40E-04 AP 3 LI 0029-03 9/28/2005 Co-58 1.80E-04 7.90E-04 3.20E-03 AP 3 L10029-03 9/28/2005 Co-60 -5.OOE-05 4.20E-04 2.OOE-03 1.70E-02 6.60E-02 AP AP AP 3

3 3

L10029-03 L10029-03 L10029-03 9/28/2005 9/28/2005 9/28/2005 Cr-51 Cs-1 34 Cs-1 37

-5.OOE-03

-1.90E-04 3.1 OE-04 4.50E-04 5.00E-04 2.00E-03 1.90E-03 J

AP 3 L10029-03 9/28/2005 Fe-59 8.00E-04 2.60E-03 1.00E-02 AP 3 L10029-03 9/28/2005 1-131 3.00E-02 2.40E-02 8.40E-02 AP 3 L10029-03 9/28/2005 K-40 6.30E-03 5.60E-03 2.OOE-02 AP 3 L10029-03 9/28/2005 La-140 5.00E-03 1.1OE-02 4.40E-02 AP 3 L10029-03 9/28/2005 Mn-54 -1.50E-04 4.50E-04 2.00E-03 AP 3 L10029-03 9/28/2005 Nb-95 1.1 OE-03 1.30E-03 4.70E-03 AP 3 L10029-03 9/28/2005 Ru-103 6.00E-04 1.10E-03 4.1 OE-03 AP 3 L10029-03 9/28/2005 Ru-I 06 -7.00E-03 5.70E-03 2.40E-02 AP 3 L10029-03 9/28/2005 Sb-124 3.10E-03 1.80E-03 2.80E-03 AP 3 L10029-03 9/28/2005 Sb-125 5.00E-04 1.1 OE-03 4.1 OE-03 AP 3 L10029-03 9/28/2005 Se-75 -1.20E-04 7.00E-04 2.70E-03 AP 3 L10029-03 9/28/2005 Zn-65 O.OOE+00 1.40E-03 5.60E-03 AP 3 L10029-03 9/28/2005 Zr-95 1.1 OE-03 1.30E-03 4.90E-03 AP LI 0467-03 1/4/2006 AcTh-228 -2.10E-03 1 AOE-03 6.60E-03 AP L10467-03 1/4/2006 Ag-108m 7.00E-05 2.80E-04 1.10E-03 AP L10467-03 1/4/2006 Ag-110m -3.80E-04 8.10E-04 3.30E-03 L

AP LI 0467-03 1/4/2006 Ba-140 2.OOE-02 1.10E-02 3.00E-02 AP LI 0467-03 1/4/2006 Be-7 7.30E-02 1.30E-02 2.90E-02 AP AP L10467-03 LI 0467-03 1/4/2006 1/4/2006 Ce-141 Ce-144

-2.00E-03

-2.40E-03 6.00E-05 1.90E-03 2.OOE-03 2.20E-04 7.30E-03 8.1 0E-03 8.00E-04 L

AP LI 0467-03 1/4/2006 Co-57 AP AP AP LI 0467-03 LI 0467-03 L10467-03 1/4/2006 1/4/2006 1/4/2006 Co-58 Co-60 Cr-51

-4.00E-04

-8.00E-05

-3.1 OE-02 7.70E-04 4.90E-04 1.20E-02 3.30E-03 2.1 OE-03 5.60E-02 LI AP LI 0467-03 1/4/2006 Cs-134 8.OOE-05 3.80E-04 1.60E-03 AP LI 0467-03 1/4/2006 Cs-137 1.90E-04 4.60E-04 1.70E-03 AP L10467-03 1/4/2006 Fe-59 -2.90E-03 2.30E-03 1.10E-02 AP LI 0467-03 1/4/2006 1-131 -2.40E-02 3.OOE-02 1.20E-01 AP L10467-03 1/4/2006 K-40 -4.30E-03 4.90E-03 2.30E-02 AP LI 0467-03 1/4/2006 La-140 2.30E-02 1.20E-02 3.40E-02 AP L10467-03 1/4/2006 Mn-54 O.OOE+00 4.40E-04 1.80E-03 Li AP LI 0467-03 1/4/2006 Nb-95 -8.OOE-04 1.40E-03 6.00E-03 AP LI 0467-03 1/4/2006 Ru-1 03 2.10E-03 1.20E-03 3.80E-03 AP L10467-03 1/4/2006 Ru-I 06 4.20E-03 3.70E-03 1.30E-02 u1 AP L10467-03 1/4/2006 Sb-124 -2.70E-03 2.OOE-03 1.1 OE-02 AP LI 0467-03 1/4/2006 Sb-125 -2.20E-04 8.40E-04 3.40E-03 AP L10467-03 1/4/2006 Se-75 3.1 OE-04 5.60E-04 2.00E-03 AP Li 0467-03 1/4/2006 Zn-65 1.30E-03 1.1OE-03 3.60E-03 AP AP L10467-03 L8724-04 1i/42006 1/19/2005 Zr-95 GROSS BETA 1.26E-03 1.83E-02 9.90E-04 1.40E-03 3.40E-03 3.20E-03

L AP L8796-04 2/2/2005 GROSS BETA 1.82E-02 1.50E-03 3.40E-03 AP 4 L8844-04 2/16/2005 GROSS BETA 1.64E-02 1.50E-03 3.80E-03 I AP 4 L8904-04 3/2/2005 GROSS BETA 1.31 E-02 1.50E-03 4.00E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-109-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYP,_ STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCilm3)

AP 4 L8979-04 3/16/2005 GROSS BETA 1.18E-02 1.40E-03 3.70E-03 AP 4 L9037-04 3/30/2005 GROSS BETA 1.51 E-02 1.50E-03 3.60E-O.,

AP 4 L9122-04 4/13/2005 GROSS BETA 9.30E-03 1.40E-03 3.90E-03 AP 4 L9205-04 4/27/2005 GROSS BETA 1.51 E-02 1.50E-03 3.70E-03 AP 4 L9262-04 5/11/2005 GROSS BETA 6.30E-03 1.30E-03 3.70E-O';

AP 4 L9325-04 5/25/2005 GROSS BETA 6.80E-03 1.30E-03 3.60E-03 AP 4 L9398-04 6/8/2005 GROSS BETA 8.40E-03 1.1OE-03 3.00E-03 AP 4 L9472-04 6/22/2005 GROSS BETA 7.70E-03 1.20E-03 3.20E-03 AP 4 L9530-04 7/6/2005 GROSS BETA 1.59E-02 1.50E-03 3.60E-O0I AP 4 L9622-04 7/20/2005 GROSS BETA 1.24E-02 1.30E-03 3.30E-03 AP 4 L9700-04 8/3/2005 GROSS BETA 1.82E-02 1.50E-03 3.40E-03 AP 4 L9764-04 8/1712005 GROSS BETA 2.63E-02 1.60E-03 3.00E-03 AP 4 L9825-04 8/31/2005 GROSS BETA 1.32E-02 1.30E-03 3.10E-03 AP 4 L9869-04 9/14/2005 GROSS BETA 2.16E-02 1.60E-03 3.50E-03 AP 4 L9962-04 9/28/2005 GROSS BETA 1.94E-02 1.50E-03 3.40E-Q3 AP 4 L10017-0410/12/2005 GROSS BETA 1.49E-02 1.40E-03 3.50E-03 AP 4 L10102-0410/26/2005 GROSS BETA 5.60E-03 7.80E-04 2.20E-03 AP 4 L10171-04 11/9/2005 GROSS BETA 1.60E-02 1.40E-03 3.30E-03 AP 4 L10223-0411/22/2005 GROSS BETA 1.57E-02 1.50E-03 3.70E-03 AP 4 L10267-04 12/7/2005 GROSS BETA 1.24E-02 1.30E-03 3.20E-03 AP 4 L10314-0412/21/2005 GROSS BETA 1.99E-02 I AOE-03 3.00E-03 AP L9096-04 3/30/2005 AcTh-228 4.OOE-04 1.40E-03 5.70E-03 AP L9096-04 3/30/2005 Ag-108m 1.40E-04 3.10E-04 1.20E-03 AP L9096-04 3/30/2005 Ag-110m -2.OOE-04 3.50E-04 1.90E-03 AP L9096-04 3/30/2005 Ba-140 -2.20E-02 1.00E-02 5.50E-02 AP L9096-04 3/30/2005 Be-7 1.16E-01 1.50E-02 2.70E-02 AP L9096-04 3/30/2005 Ce-141 3.50E-03 1.70E-03 5.50E-0:3 AP L9096-04 3/30/2005 Ce-144 O.OOE+00 2.20E-03 8.00E-03 AP L9096-04 3/30/2005 Co-57 -1.OOE-04 2.40E-04 9.30E-04 AP L9096-04 3/30/2005 Co-58 1.110E-04 5.70E-04 2.40E-0:3 AP L9096-04 3/30/2005 Co-60 -7.80E-04 3.90E-04 2.20E-03 AP L9096-04 3/30/2005 Cr-51 5.00E-03 1.40E-02 5.20E-02 AP L9096-04 3/30/2005 Cs-134 1.OOE-04 4.40E-04 1.80E-0:3 AP L9096-04 3/30/2005 Cs-137 -2.80E-04 2.50E-04 1.30E-0:3 AP L9096-04 3/30/2005 Fe-59 1:40E-03 2.20E-03 8.40E-0:3 AP L9096-04 3/30/2005 1-131 -1.OOE-02 2.30E-02 9.50E-02 AP L9096-04 3/30/2005 K-40 2.OOE-03 5.40E-03 2.10E-02 AP L9096-04 3/30/2005 La-140 -2.50E-02 1.20E-02 6.30E-02 AP L9096-04 3/30/2005 Mn-54 6.60E-04 4.80E-04 1.60E-03 AP L9096-04 3/30/2005 Nb-95 2.OOE-03 1.30E-03 4.10E-03 AP L9096-04 3/30/2005 Ru-103 O.OOE+00 8.80E-04 3.60E-03 AP L9096-04 3/30/2005 Ru-106 -2.110E-03 3.70E-03 1.60E-02 AP L9096-04 3/30/2005 Sb-124 -9.OOE-04 2.OOE-03 9.80E-03 AP L9096-04 3/30/2005 Sb-125 O.OOE+00 9.80E-04 3.80E-03 AP L9096-04 3/30/2005 Se-75 1.60E-03 6.10E-04 1.80E-03 AP L9096-04 3/30/2005 Zn-65 -7.OOE-04 9.90E-04 4.60E-03 AP L9096-04 3/30/2005 Zr-95 -1.31E-03 8.50E-04 4.70E-03 AP L9559-04 7/6/2005 AcTh-228 4.80E-04 8.90E-04 3.30E-03 AP L9559-04 7/6/2005 Ag-1 08m 2.20E-04 1.70E-04 5.90E-04

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-110-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L9559-04 7/6/2005 Ag-11im -6.1 OE-04 3.80E-04 1.70E-03 I I AP L9559-04 7/6/2005 Ba-140 O.OOE+00 6.70E-03 2.70E-02 AP L9559-04 7/6/2005 Be-7 9.40E-02 1.OOE-02 2.1 OE-02 AP L9559-04 7/6/2005 Ce-141 O.OOE+00 1.1OE-03 3.90E-03 I

AP L9559-04 7/6/2005 Ce-144 2.OOE-03 I.30E-03 4.1 OE-03 I AP L9559-04 7/6/2005 Co-57 -6.OOE-05 1.50E-04 5.60E-04 Lj AP L9559-04 7/6/2005 Co-58 -2.80E-04 3.40E-04 1.50E-03 AP L9559-04 7/6/2005 Co-60 3.40E-04 2.80E-04 9.70E-04 I I AP L9559-04 7/6/2005 Cr-51 -8.20E-03 7.60E-03 3.OOE-02 AP L9559-04 7/6/2005 Cs-1 34 1.1 OE-04 2.20E-04 8.20E-04 AP L9559-04 7/6/2005 Cs-137 1.80E-04 2.20E-04 7.80E-04 AP L9559-04 7/6/2005 Fe-59 -6.50E-04 8.OOE-04 3.90E-03 AP L9559-04 7/6/2005 1-131 O.OOE+00 1.60E-02 6.1 OE-02 AP L9559-04 7/6/2005 K-40 -3.20E-03 3.OOE-03 1.30E-02 AP L9559-04 716/2005 La-140 O.OOE+00 7.80E-03 3.10E-02 AP L9559-04 7/6/2005 Mn-54 -1.OOE-05 2.80E-04 1.1 OE-03 AP L9559-04 7/6/2005 Nb-95 2.03E-03 9.40E-04 2.80E-03 AP L9559-04 7/6/2005 Ru-103 -2.40E-04 6.60E-04 2.60E-03 AP L9559-04 716/2005 Ru-106 -1.70E-03 2.80E-03 1.10E-02 AP L9559-04 716/2005 Sb-124 4.20E-04 9.30E-04 3.90E-03 AP L9559-04 7/6/2005 Sb-125 6.00E-04 5.80E-04 2.OOE-03 AP L9559-04 7/6/2005 Se-75 O.OOE+00 3.80E-04 1.40E-03 Li AP L9559-04 7/6/2005 Zn-65 9.20E-04 6.80E-04 2.30E-03 AP L9559-04 7/6/2005 Zr-95 7.1 OE-04 7.30E-04 2.60E-03 AP AP L10029-04 L10029-04 9/28/2005 9/28/2005 9/28/2005 AcTh-228 Ag-108m Ag-11Om

-2.OOE-04 2.20E-04

-8.OOE-04 1.1OE-03 2.80E-04 5.60E-04 5.10E-03 1.OOE-03 2.80E-03 L,

AP L10029-04 AP AP AP L10029-04 L10029-04 L10029-04 9/28/2005 9/28/2005 9/28/2005 Ba-140 Be-7 Ce-141

-7.OOE-03 9.40E-02 2.OOE-04 1.OOE-02 1.40E-02 1.80E-03 4.80E-02 2.90E-02 6.50E-03 L

AP L10029-04 9/28/2005 Ce-144 -3.OOE-04 2.20E-03 8.30E-03 AP L10029-04 9/28/2005 Co-57 -1.80E-04 2.60E-04 1.OOE-03 AP L10029-04 9/28/2005 Co-58 4.30E-04 8.30E-04 3.1 OE-03 AP LI 0029-04 9/28/2005 Co-60 4.60E-04 5.40E-04 2.OOE-03 AP L10029-04 9/28/2005 Cr-51 1.OOE-02 1.1OE-02 4.OOE-02 AP L10029-04 9/28/2005 Cs-134 -5.30E-04 4.50E-04 2.10E-03 AP L10029-04 9/28/2005 Cs-137 9.70E-04 4.60E-04 1.40E-03 AP AP L10029-04 L10029-04 9/28/2005 9/28/2005 Fe-59 1-131

-7.OOE-04 5.OOE-03 1.60E-03 2.40E-02 7.50E-03 9.20E-02 rL AP L10029-04 9/28/2005 K-40 -7.80E-03 3.40E-03 2.10E-02 AP L10029-04 9/28/2005 La-140 -8.OOE-03 1.20E-02 5.50E-02 AP L10029-04 9/28/2005 Mn-54 -6.60E-04 4.80E-04 2.20E-03 AP L10029-04 9/28/2005 Nb-95 2.1 OE-03 1.50E-03 4.80E-03 AP L10029-04 9/28/2005 Ru-103 5.50E-04 9.80E-04 3.70E-03 AP L10029-04 9/28/2005 Ru-106 -2.40E-03 4.30E-03 1.80E-02 AP L10029-04 9/28/2005 Sb-124 -2.70E-03 1.60E-03 9.80E-03 AP L10029-04 9/28/2005 Sb-125 9.20E-04 9.70E-04 3.40E-03 AP L10029-04 9/28/2005 Se-75 -1.06E-03 5.50E-04 2.40E-03 AP LI 0029-04 9/28/2005 Zn-65 3.50E-04 9.20E-04 3.80E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-i11-

L Seabrook Station Radiological Environmental Monitoring Program Data -2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP 4 L10029-0419/28/2005 Zr-95 -1.90E-04 9.50E-04 4.30E-03 AP 4 LI 0467-044 1/4/2006 AcTh-228 O.OOE+OO 1.30E-03 5.20E-03 AP 4 L10467-04 1/4/2006 Ag-108m -1.80E-04 2.30E-04 1.OO1E-02 AP 4 LI 0467-044 1/4/2006 Ag-1I Om -3.40E-04 4.1 OE-04 2.OOE-02.

L' AP AP 4

4 L10467-04 4 1/4/2006 LI 0467-044 1/4/2006 Ba-1 40 Be-7 Ce-141 1.07E-02 5.OOE-02

-2.OOE-04 6.20E-03 1.20E-02 1.80E-03 9.7OE-0$"

3.20E-02' 6.40E-0$':

L10467-04 1/4/2006 I AP AP AP 4

4 4

LI 0467-04 1/4/2006 LI 0467-04 1/4/2006 Ce-144 Co-57

-2.60E-03

-1.20E-04 1.70E-03 2.00E-04 7.OOE-0":

7.80E-04'.

U AP AP 4

4 LI 0467-04 1/4/2006 LI 0467-04 1/4/2006 Co-58 Co-60

-7.80E-04 1.30E-04 2.OOE-03 5.1 OE-04 2.60E-04 1.1OE-02 2.60E-0$:

I1.10E-0$:

4.30E-02 AP 4 LI 0467-04 1/4/2006 Cr-51 AP 4 LI 0467-04 1/4/2006 Cs-134 7.OOE-05 3.40E-04 I1.40E-03:

AP 4 LI 0467-04 1/4/2006 Cs-1 37 -2.30E-04 4.1 OE-04 I .7OE-03.'

AP 4 L10467-04 1/4/2006 Fe-59 1.90E-03 1.90E-03 6.80E-03' AP 4 LI 0467-04 1/4/2006 1-131 -5.OOE-03 2.60E-02 1.OOE-01 AP 4 L10467-04 1/4/2006 K-40 -5.1 OE-03 4.50E-03 2.1 OE-02' AP 4 L10467-04 1/4/2006 La-140 1.23E-02 7.IOE-03 1.IOE-02 AP 4 LI 0467-04 1/4/2006 Mn-54 -1.1 OE-04 3.40E-04 I1.5OE-03 AP 4 LI 0467-04 1/4/2006 Nb-95 9.OOE-04 1.20E-03 4.60E-013 AP 4 LI 0467-04 1/4/2006 Ru-1 03 -5.0OE-04 9.20E-04 3.90E-013 AP 4 L10467-04 1/4/2006 Ru-106 1.OOE-04 3.1 OE-03 I1.20E-02' AP 4 LI 0467-04 1/4/2006 Sb-124 -1.60E-03 2.60E-03 1.1 OE-0'2 AP 4 LI 0467-04 1/4/2006 Sb-125 -9.60E-04 6.40E-04 3.1 OE-03 AP 4 L10467-04 1/4/2006 Se-75 -3.70E-04 5.OOE-04 2.OOE-0:3 AP 4 LI 0467-04 1/4/2006 Zn-65 -1.50E-03 1.1 OE-03 5.20E-03 AP 4 L10467-04 1/4/2006 Zr-95 -1.OOE-04 I.IOE-03 4.50E-03 AP 5 L8724-05 1/19/2005 GROSS BETA 2.06E-02 1.50E-03 3.40E-03 AP 5 L8796-05 2/2/2005 GROSS BETA 2.11E-02 1.50E-03 3.30E-03 AP 5 L8844-05 2/16/2005 GROSS BETA 1.97E-02 1.60E-03 3.80E-0:3 AP 5 L8904-05 3/2/2005 GROSS BETA 1.59E-02 1.50E-03 3.90E-03 AP 5 L8979-05 3/16/2005 GROSS BETA 1.39E-02 1.40E-03 3.70E-03 AP 5 L9037-05 3/30/2005 GROSS BETA 1.43E-02 1.50E-03 3.80E-0:3 AP 5 L9122-05 4/13/2005 GROSS BETA 1.01 E-02 1.50E-03 4.10OE-03 AP 5 L9205-05 4/27/2005 GROSS BETA 1.64E-02 1.60E-03 3.90E-0:3 AP 5 L9262-05 5/11/2005 GROSS BETA 1.06E-02 1.50E-03 4.00E-0:3 AP 5 L9325-05 5/25/2005 GROSS BETA 5.90E-03 1.30E-03 3.70E-0:3 AP 5 L9398-05 6/8/2005 GROSS BETA 1.03E-02 1.20E-03 3.20E-0:3 AP 5 L9472-05 6/22/2005 GROSS BETA 1.09E-02 1.30E-03 3.20E-0.3 AP 5 L9530-05 7/6/2005 GROSS BETA 1.87E-02 1.50E-03 3.60E-0:3 AP 5 L9622-05 7/12/2005 GROSS BETA 7.60E-03 2.60E-03 7.80E-0:3 AP 5 L10102-0510/26/2005 GROSS BETA -2.40E-03 2.OOE-03 7.IOE-03 AP 5 L10171-05 11/9/2005 GROSS BETA 1.78E-02 1.60E-03 3.80E-0 3 AP 5 LI 0223-0511/22/2005 GROSS BETA 1.66E-02 1.70E-03 4.30E-O03 AP 5 LI 0267-05 12/7/2005 GROSS BETA 1.81 E-02 1.60E-03 3.70E-O03 AP 5 L10314-0512/21/2005 GROSS BETA 2.64E-02 1.70E-03 3.50E-O03 AP 5 L9096-05 3/30/2005 AcTh-228 4.OOE-04 1.30E-03 5.20E-013 AP 5 L9096-05 3/30/2005 Ag-108m -4.40E-04 2.90E-04 I1.30E-0.3 AP 5 L9096-05 3/30/2005 Ag-11 Om 8.00E-04 6.40E-04 2.20E-0.3

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-112-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 j SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP 5 L9096-05 3/30/2005 Ba-140 3.70E-03 8.20E-03 3.40E-02 AP 5 L9096-05 3/30/2005 Be-7 1.08E-01 1.60E-02 3.50E-02

AP 5 L9096-05 3/30/2005 Ce-141 -1.90E-03 1.80E-03 6.80E-03 AP 5 L9096-05 3/30/2005 Ce-144 O.OOE+00 2.20E-03 8.OOE-03 AP 5 L9096-05 3/30/2005 Co-57 1.60E-04 2.30E-04 8.10E-04 AP 5 L9096-05 3/30/2005 Co-58 1.11E-03 5.60E-04 1.50E-03 I, AP 5 L9096-05 3/30/2005 Co-60 1.10E-04 4.90E-04 2.OOE-03 AP 5 L9096-05 3/30/2005 Cr-51 -1.70E-02 1.10E-02 4.90E-02 AP 5 L9096-05 3/30/2005 Cs-134 -2.10E-04 3.10E-04 1.50E-03 AP 5 L9096-05 3/30/2005 Cs-137 -1.10E-04 4.20E-04 1.70E-03 AP 5 L9096-05 3/30/2005 Fe-59 2.1 OE-03 1.20E-03 1.90E-03 AP 5 L9096-05 3/30/2005 1-131 O.OOE+00 2.60E-02 1.OOE-01 j AP 5 L9096-05 3/30/2005 K-40 -1.10E-03 5.90E-03 2.50E-02 AP 5 L9096-05 3/30/2005 La-140 4.20E-03 9.50E-03 3.90E-02 AP 5 L9096-05 3/30/2005 Mn-54 -2.70E-04 3.80E-04 1.80E-03 AP 5 L9096-05 3/30/2005 Nb-95 3.OOE-04 1.30E-03 5.20E-03 AP 5 L9096-05 3/30/2005 Ru-103 -8.00E-04 1.OOE-03 4.30E-03 AP 5 L9096-05 3/30/2005 Ru-106 2.40E-03 3.70E-03 1.40E-02 AP 5 L9096-05 3/30/2005 Sb-124 -3.70E-03 2.30E-03 1.20E-02 AP 5 L9096-05 3/30/2005 Sb-125 -5.OOE-04 1.OOE-03 4.20E-03 AP AP AP 5

5 5

L9096-05 L9096-05 L9096-05 3/30/2005 3/30/2005 3/30/2005 Se-75 Zn-65 Zr-95 1.18E-03 O.OOE+OO

-8.00E-04 6.40E-04 7.OOE-04 1.30E-03 2.OOE-03 3.30E-03 5.70E-03 L

AP 5 L9559-05 7/6/2005 AcTh-228 5.OOE-04 1.60E-03 6.OOE-03 AP 5 L9559-05 7/6/2005 Ag-1 08m O.OOE+OO 2.20E-04 9.1 OE-04 AP 5 L9559-05 7/6/2005 Ag-1I Om O.OOE+00 6.30E-04 2.50E-03 lI AP 5 L9559-05 7/6/2005 Ba-140 -3.60E-03 8.OOE-03 3.90E-02 AP AP AP 5

5 5

L9559-05 L9559-05 L9559-05 7/6/2005 Be-7 7/6/2005 Ce-141 7/6/2005 Ce-144 7.60E-02 3.50E-03

-1.80E-03 1.40E-02 1.60E-03 1.40E-03 3.20E-02 5.OOE-03 6.OOE-03 LI AP AP AP 5

5 5

L9559-05 L9559-05 L9559-05 7/6/2005 Co-57 7/6/2005 Co-58 7/6/2005 Co-60 1.10E-04

-5.OOE-05

-2.10E-04 2.30E-04 6.20E-04 3.80E-04 8.20E-04 2.60E-03 1.80E-03

]

AP 5 L9559-05 7/6/2005 Cr-51 -7.OOE-03 1.30E-02 5.20E-02 AP 5 L9559-05 7/6/2005 Cs-1 34 5.OOE-04 2.90E-04 8.50E-04 AP 5 L9559-05 7/6/2005 Cs-137 3.40E-04 3.30E-04 1.20E-03 J AP 5 L9559-05 7/6/2005 Fe-59 1.30E-03 1.60E-03 6.20E-03 AP AP 5

5 5

L9559-05 L9559-05 L9559-05 7/6/2005 7/6/2005 7/6/2005 1-131 K-40 La-140 1.OOE-02

-6.40E-03

-4.10E-03 2.10E-02 3.70E-03 9.20E-03 8.OOE-02 2.OOE-02 4.40E-02 L

AP AP 5 L9559-05 7/6/2005 Mn-54 4.30E-04 4.10E-04 1.50E-03 AP 5 L9559-05 7/6/2005 Nb-95 -1.OOE-03 1.20E-03 5.50E-03 L AP 5 L9559-05 7/6/2005 Ru-1 03 7.30E-04 5.50E-04 1.80E-03 AP 5 L9559-05 7/6/2005 Ru-1 06 -2.0OE-04 3.90E-03 1.50E-02

-9.OOE-04 1.90E-03 9.20E-03 AP AP 5

5 L9559-05 L9559-05 7/6/2005 7/6/2005 Sb-124 Sb-125 -2.10E-04 3.90E-04 8.OOE-04 5.20E-04 3.30E-03 1.80E-03 L

AP 5 L9559-05 7/6/2005 Se-75 AP 5 L9559-05 7/6/2005 Zn-65 -1.58E-03 9.50E-04 4.80E-03 I]

AP 5 L9559-05 7/6/2005 Zr-95 1.OOE-03 1.20E-03 4.40E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-113-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMF'LE END CONC STD.DEV. MDC TYrPF CZTATICOM

- . - . - I I qm nlATF:

NULIMDE ffiCi/rn3)

- - - I (DUi/m3l (r)Ci/m3ji AP L10029-05 7/12/2005 AcTh-228 5.30E-03 8.60E-03 3.002E-O' AP L10029-05 7/12/2005 Ag-108m 9.00E-04 1.40E-03 4.90E-03 AP L10029-05 7/12/2005 Ag-11 Om 7.00E-04 3.70E-03 1.30E-O;0 AP L10029-05 7/12/2005 Ba-140 O.OOE+OO 7.60E-01 2.80E+0O AP L10029-05 7/12/2005 Be-7 4.00E-03 6.00E-02 2.10E-Ol AP L10029-05 7/12/2005 Ce-141 8.OOE-03 2.70E-02 8.90E-02 AP L10029-05 7/12/2005 Ce-144 I.OOE-03 1.20E-02 4.10E-02 AP L10029-05 7/12/2005 Co-57 -2.60E-03 1.30E-03 4.70E-0:3 AP L10029-05 7/12/2005 Co-58 1.70E-03 5.10E-03 1.80E-02 AP L10029-05 7/12/2005 Co-60 3.30E-03 2.00E-03 6.60E-0:3 AP L10029-05 7/12/2005 Cr-51 1.10E-01 2.OOE-01 6.70E-OI AP L10029-05 7/12/2005 Cs-134 1.90E-03 2.20E-03 7.40E-0:3 AP L10029.05 7/12/2005 Cs-1 37 -4.60E-03 2.50E-03 9.1 OE-0:3 AP L10029-05 7/1212005 Fe-59 2.00E-03 1.90E-02 6.70E-0:2 AP L10029-05 7/12/2005 1-131 -I.0OE+OO 1.90E+01 6.70E+O I AP L10029-05 7/12/2005 K-40 -2.20E-02 3.30E-02 1.20E-O I AP L10029-05 7/12/2005 La-140 O.OOE+OO 8.80E-01 3.20E+0)

AP L10029-05 7/12/2005 Mn-54 -1.60E-03 2.40E-03 8.70E-0:3 AP L10029-05 7/12/2005 Nb-95 1.50E-02 1.50E-02 5.10E-02 AP L10029-05 7/12/2005 Ru-103 -I.1OE-02 1.20E-02 4.40E-02 AP L10029-05 7/12/2005 Ru-106 6.00E-03 2.30E-02 7.90E-02 AP L10029-05 7/12/2005 Sb-124 1.60E-02 1.50E-02 5.1OE-0.2 AP L10029-05 7/12/2005 Sb-1 25 5.30E-03 4.80E-03 1.60E-0.2 AP L10029-05 7/12/2005 Se-75 3.50E-03 4.70E-03 1.60E-02 AP L10029-05 7/12/2005 Zn-65 -5.60E-03 5.60E-03 2.1OE-02 AP L10029-05 7/1212005 Zr-95 -5.80E-03 9.70E-03 3.50E-02 AP L10467-05 1/4/2006 AcTh-228 2.20E-03 2.10E-03 7.20E-03 AP L10467-05 1/4/2006 Ag-108m -1.80E-04 4.20E-04 1.70E-03 AP LI 0467-05 1/4/2006 Ag-11Om 2.40E-04 8.80E-04 3.50E-03 AP LI 0467-05 1/4/2006 Ba-140 -8.30E-03 5.80E-03 3.80E-02 AP L10467-05 1/4/2006 Be-7 8.70E-02 1.60E-02 3.60E-02 AP L10467-05 1/4/2006 Ce-141 -2.20E-03 2.00E-03 7.90E-03 AP L10467-05 1/412006 Ce-144 3.80E-03 2.60E-03 8.70E-03 AP L10467-05 1/4/2006 Co-57 1.60E-04 2.80E-04 t.00E-03 AP L10467-05 1/4/2006 Co-58 -1.25E-03 8.1 0E-04 3.90E-03 AP L10467-05 1/4/2006 Co-60 8.40E-04 5.40E-04 1.70E-03 AP L10467-05 1/4/2006 Cr-51 -2.80E-02 1.50E-02 6.50E-02 AP LI 0467-05 1/4/2006 Cs-134 -8.20E-04 5.30E-04 2.60E-03 AP L10467-05 1/4/2006 Cs-I 37 7.30E-04 5.40E-04 1.80E-03 AP L10467-05 1/4/2006 Fe-59 -2.50E-03 2.50E-03 1.20E-02 AP LI 0467-05 1/4/2006 1-131 -1.80E-02 2.90E-02 1.20E-01 AP L10467-05 1/4/2006 K-40 -3.80E-03 6.10E-03 2.80E-02 AP LI 0467-05 1/4/2006 La-140 -9.50E-03 6.70E-03 4.40E-02 AP L10467-05 1/4/2006 Mn-54 -4.90E-04 5.90E-04 2.60E-03 AP L10467-05 1/4/2006 Nb-95 -1.70E-03 1.60E-03 7.10E-03 AP L10467-05 1/4/2006 Ru-103 2.30E-03 1.60E-03 5.20E-03 AP L10467-05 1/4/2006 Ru-106 5.30E-03 5.20E-03 1.80E-02 AP L10467-05 1/4/2006 Sb-124 1.10E-03 1.90E-03 8.00E-03 AP L10467-05 1/4/2006 Sb-125 1.70E-03 1.30E-03 4.50E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-114-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 L SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCim3) (pCi/m3)

AP 5 LI 0467-05 1/4/2006 Se-75 -5.20E-04 8.OOE-04 3.1 OE-03 AP 5 L10467-05 114/2006 Zn-65 0.O0E+00 1.10E-03 4.60E-03 AP 5 LI 0467-05 1/4/2006 Zr-95 2.1 OE-03 1.50E-03 5.1 OE-03 AP 7 L8724-06 1/19/2005 GROSS BETA 1.92E-02 1.50E-03 3.50E-03 .

AP 7 L8796-06 2/2/2005 GROSS BETA 2.03E-02 1.60E-03 3.70E-03 AP 7 L8844-06 2/16/2005 GROSS BETA 1.38E-02 1.60E-03 4.20E-03 AP 7 L8904-06 3/2/2005 GROSS BETA 1.48E-02 1.60E-03 4.20E-03 AP AP 7

7 L8979-06 3/16/2005 L9037-06 3/30/2005 GROSS BETA GROSS BETA 1.12E-02 1.28E-02 1.50E-03 1.50E-03 4.1 OE-03 4.OOE-03 I1 AP 7 L9122-06 4/13/2005 GROSS BETA 8.30E-03 1.50E-03 4.40E-03 AP 7 L9205-06 4/27/2005 GROSS BETA 1.64E-02 1.60E-03 4.1 OE-03 AP 7 L9262-06 5/11/2005 GROSS BETA 6.1 OE-03 1.40E-03 4.20E-03 AP 7 L9325-06 5/25/2005 GROSS BETA 7.00E-03 1.40E-03 4.1 OE-03 AP 7 L9398-06 6/812005 GROSS BETA 9.60E-03 1.20E-03 3.1 OE-03 AP 7 L9472-06 6/22/2005 GROSS BETA 6.70E-03 1.20E-03 3.20E-03 AP 7 L9530-06 7/6/2005 GROSS BETA 1.79E-02 1.50E-03 3.60E-03 AP 7 L9622-06 7/20/2005 GROSS BETA 1.42E-02 1.40E-03 3.30E-03 AP 7 L9700-06 8/3/2005 GROSS BETA 1.75E-02 1.50E-03 3.40E-03 AP 7 L9764-06 8/17/2005 GROSS BETA 2.59E-02 1.60E-03 3.OOE-03 AP 7 L9825-06 8/31/2005 GROSS BETA 1.56E-02 I .40E-03 3.OOE-03 AP 7 L9869-06 9114/2005 GROSS BETA 2.14E-02 1.60E-03 3.50E-03 AP 7 L9962-06 9/28/2005 GROSS BETA 1.88E-02 1.50E-03 3.40E-03 AP 7 L10017-0610112/2005 GROSS BETA 1.52E-02 1.40E-03 3.60E-03 AP 7 L10102-0610/26/2005 GROSS BETA 6.62E-03 7.90E-04 2.20E-03 3.20E-03 Li AP 7 L10171-06 11/9/2005 GROSS BETA 1.88E-02 1.50E-03 AP 7 LI 0223-0611/22/2005 GROSS BETA I.40E-02 I.40E-03 3.60E-03 AP 7 L10267-06 12/7/2005 GROSS BETA 1.50E-02 1.30E-03 3.20E-03 AP 7 L10314-0612/21/2005 GROSS BETA 2.14E-02 1.40E-03 3.OOE-03 AP AP L9096-06 3/30/2005 L9096-06 3/30/2005 AcTh-228 Ag-108m

-1.60E-03

-2.50E-04 1.OOE-03 1.70E-04 5.50E-03 8.70E-04 U?

AP L9096-06 3/30/2005 Ag-I1 Om -3.80E-04 3.80E-04 2.OOE-03 AP L9096-06 3/30/2005 Ba-140 0.O0E+00 7.60E-03 3.50E-02 AP L9096-06 3/30/2005 Be-7 9.OOE-02 1.20E-02 2.1 OE-02

AP AP L9096-06 3/30/2005 L9096-06 3/30/2005 Ce-141 Ce-144

-2.20E-03

-7.40E-04 1.OOE-03 9.40E-04 4.30E-03 3.90E-03 L.

AP L9096-06 3130/2005 Co-57 5.OOE-05 1.60E-04 5.80E-04 AP AP AP L9096-06 3/30/2005 L9096-06 3/30/2005 L9096-06 3/30/2005 Co-58 Co-60 Cr-51

-1.OOE-04

-4.OOE-04

-2.OOE-03 4.90E-04 2.80E-04 9.OOE-03 2.20E-03 I.80E-03 3.60E-02 L?

AP L9096-06 3/30/2005 Cs-1 34 -5.IOE-04 3.80E-04 1.90E-03 AP L9096-06 3/30/2005 Cs-1 37 1.OOE-04 1.OOE-04 2.70E-04 AP L9096-06 3/30/2005 Fe-59 -1.OOE-04 1.60E-03 8.30E-03 AP L9096-06 3/30/2005 1-131 I.70E-02 1.90E-02 6.80E-02 AP L9096-06 3130/2005 K-40 I.70E-03 3.90E-03 1.60E-02 AP L9096-06 3/30/2005 La-140 0.OOE+00 8.70E-03 4.10E-02 AP L9096-06 3130/2005 Mn-54 1.40E-04 3.20E-04 1.30E-03 AP AP L9096-06 3/30/2005 L9096-06 3/30/2005 Nb-95 Ru-103 Ru-106 1.70E-04

-1.IOE-03

-1.70E-03 9.20E-04 8.OOE-04 3.90E-03 3.70E-03 1.30E-02 L

AP L9096-06 3/30/2005 3.OOE-03

[I

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-115- II Li

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC L SAMPLE TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L9096-06 3/3012005 Sb-1 24 0.OOE+00 1.40E-03 7.1 OE-02 AP L9096-06 3/30/2005 Sb-125 -1.90E-04 5.80E-04 2.50E-02 L L9096-06 3/30/2005 Se-75 1.OOE-05 3.70E-04 1.50E-03.

AP AP L9096-06 3130/2005 Zn-65 6.90E-04 6.90E-04 2.50E-02 L AP AP AP L9096-06 L9559-06 L9559-06 3/30/2005 7/6/2005 7/6/2005 Zr-95 AcTh-228 Ag-108m 6.OOE-04

-1.10E-03

-1.30E-04 9.30E-04 1.30E-03 2.80E-04 3.60E-0$

5.80E-0$

1.20E-02 5.90E-04 2.20E-02 L AP AP AP L9559-06 L9559-06 L9559-06 7/6/2005 7/6/2005 7/6/2005 Ag- 1Om Ba-140 Be-7 3.70E-04 0.OOE+00 8.60E-02 7.40E-03 1.50E-02 3.50E-02 3.40E-02 AP L9559-06 7/6/2005 Ce-141 -2.1 OE-03 1.50E-03 6.00E-0Q Ce-144 -2.30E-03 1.80E-03 7.20E-O3; L AP AP L9559-06 L9559-06 7/6/2005 7/6/2005 Co-57 -6.OOE-05 2.30E-04 8.80E-o4.

AP L9559-06 7/6/2005 Co-58 -1.25E-03 5.50E-04 3.00E-O' AP L9559-06 716/2005 Co-60 -2.40E-04 4.60E-04 2.10E-03 AP L9559-06 7/6/2005 Cr-51 -1.OOE-02 1.30E-02 5.40E-02 AP L9559-06 7/6/2005 Cs-134 -2.1 OE-04 2.30E-04 1.30E-03 AP L9559-06 7/6/2005 Cs-137 -7.00E-05 3.1 OE-04 1.30E-03I AP L9559-06 7/6/2005 Fe-59 2.1 OE-03 1.50E-03 5.10E-03I AP L9559-06 7/6/2005 1-131 1.OOE-02 2.90E-02 1.1 0E-01 AP L9559-06 7/6/2005 K-40 7.40E-03 5.30E-03 1.80E-02 AP L9559-06 7/6/2005 La-140 O.OOE+00 8.50E-03 4.0OE-02 AP L9559-06 7/6/2005 Mn-54 -1 .90E-04 2.80E-04 1.40E-0J AP L9559-06 7/6/2005 Nb-95 -8.80E-04 7.30E-04 4.IOE-03 Ru-103 3.OOE-04 1.1OE-03 4.20E-03 L AP AP L9559-06 L9559-06 7/612005 7/6/2005 Ru-1 06 -1.35E-02 5.40E-03 2.40E-02 AP L9559-06 7/6/2005 Sb-124 3.60E-03 1.80E-03 2.40E-03 AP L9559-06 7/6/2005 Sb-125 -1.07E-03 8.80E-04 3.90E-0O3 AP L9559-06 7/6/2005 Se-75 -2.OOE-04 6.70E-04 2.50E-03 AP L9559-06 7/6/2005 Zn-65 3.00E-04 1.1OE-03 4.30E-03 AP L9559-06 7/6/2005 Zr-95 -1 .90E-04 9.30E-04 4.20E-03 AP 7 L10029-06 9/28/2005 AcTh-228 2.80E-03 1.70E-03 5.60E-03 AP 7 L10029-06 9/2812005 Ag-108m -3.60E-04 3.30E-04 1.40E-03 AP 7 L10029-06 9/28/2005 Ag-1 Om -6.OOE-04 5.30E-04 2.60E-03 AP 7 L10029-06 9/28/2005 Ba-140 1.86E-02 9.80E-03 2.70E-02 AP 7 L10029-06 9/28/2005 Be-7 1.18E-01 1.50E-02 2.70E-O'2 AP 7 L10029-06 9/28/2005 Ce-141 -1.40E-03 1.60E-03 6.10E-03 AP 7 L10029-06 9/28/2005 Ce-144 -1.20E-03 2.30E-03 8.70E-03 AP 7 L10029-06 9/28/2005 Co-57 -8.OOE-05 2.60E-04 9.70E-04 AP 7 L10029-06 9/28/2005 Co-58 4.80E-04 5.OOE-04 1.90E-03 AP 7 L10029-06 9128/2005 Co-60 1.30E-04 4.1 OE-04 1.70E-0:3 AP 7 L10029-06 9/28/2005 Cr-51 2.40E-02 1.50E-02 4.80E-02 AP 7 L10029-06 9/28/2005 Cs-1 34 -7.OOE-05 3.30E-04 1.50E-03 AP 7 L10029-06 9/28/2005 Cs-137 2.90E-04 4.1 OE-04 1.50E-0:3 AP 7 L10029-06 9/28/2005 Fe-59 -1.40E-03 1.70E-03 8.40E-0:3 AP 7 L10029-06 9/28/2005 1-131 -1.10E-02 2.90E-02 1.1OE-Ol AP 7 L10029-06 9/28/2005 K-40 8.1 OE-03 7.40E-03 2.60E-02 AP 7 L10029-06 9/28/2005 La-140 2.10E-02 1.10E-02 3.1 OE-02 AP 7 L10029-06 9/28/2005 Mn-54 1.30E-04 4.40E-04 1.70E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-116-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP 7 L10029-06 9/28/2005 Nb-95 9.OOE-04 1.OOE-03 3.70E-03 AP 7 L10029-06 9/28/2005 Ru-I 03 3.OOE-04 1.OOE-03 4.OOE-03 AP 7 LI 0029-06 9/28/2005 Ru-106 6.50E-03 4.20E-03 1.40E-02 L1 AP 7 L10029-06 9/28/2005 Sb-1 24 4.50E-03 2.40E-03 6.70E-03 AP 7 L10029-06 9/28/2005 Sb-1 25 -9.OOE-04 1.OOE-03 4.30E-03 AP 7 L10029-06 9/28/2005 Se-75 -2.1 OE-04 5.70E-04 2.20E-03 AP 7 L10029-06 9/28/2005 Zn-65 -2.40E-03 1.30E-03 6.1OE-03 AP 7 LI 0029-06 9/28/2005 Zr-95 -4.OOE-04 1.20E-03 5.40E-03 AP 7 L10467-06 1/4/2006 AcTh-228 1.80E-03 1.1OE-03 3.40E-03 AP 7 L10467-06 1/4/2006 Ag-1 08m O.OOE+00 2.90E-04 1.1OE-03 AP 7 L10467-06 1/4/2006 Ag-1i1m -3.30E-04 7.10E-04 2.90E-03 , I AP 7 L10467-06 11412006 Ba-140 -7.1 OE-03 7.1 OE-03 3.80E-02 J~

AP LI 0467-06 1/4/2006 Be-7 6.60E-02 1.40E-02 3.70E-02

AP L10467-06 1/4/2006 Ce-141 I .OOE-03 1.60E-03 5.60E-03 AP LI 0467-06 1/4/2006 Ce-144 -2.30E-03 1.70E-03 6.90E-03 II AP L10467-06 1/4/2006 Co-57 -9.00E-05 2.20E-04 8.30E-04 AP L10467-06 1/4/2006 Co-58 9.OOE-05 5.OOE-04 2.1 OE-03 AP LI 0467-06 1/4/2006 Co-60 1.30E-04 2.60E-04 1.1OE-03 AP LI 0467-06 1/4/2006 Cr-51 4.OOE-03 1.1OE-02 3.90E-02 AP L10467-06 1/4/2006 Cs-1 34 4.90E-04 3.40E-04 1.1OE-03 AP LI 0467-06 1/4/2006 Cs-1 37 4.20E-04 2.80E-04 9.1OE-04 AP LI 0467-06 1/4/2006 Fe-59 -1.20E-03 2.OOE-03 8.80E-03 AP L10467-06 1/4/2006 1-131 -2.1 OE-02 2.40E-02 1.OOE-01 AP LI 0467-06 1/4/2006 K-40 -8.80E-03 4.90E-03 2.40E-02 AP AP L10467-06 1/4/2006 LI 0467-06 1/4/2006 LI 0467-06 1/4/2006 La-140 Mn-54

-8.1 OE-03 5.50E-04 8.10E-03 4.OOE-04 4.40E-02 1.30E-03 L AP Nb-95 -1.20E-03 1.40E-03 6.1 OE-03 AP LI 0467-06 1/4/2006 Ru-1 03 -1.90E-03 1.1OE-03 5.OOE-03 AP L10467-06 1/4/2006 Ru-1 06 2.80E-03 3.IOE-03 1.1OE-02 AP LI 0467-06 1/4/2006 Sb-1 24 O.OOE+00 1.10E-03 5.90E-03 AP L10467-06 1/4/2006 Sb-125 -1.32E-03 7.80E-04 3.60E-03 AP L10467-06 1/4/2006 Se-75 9.1 OE-04 5.30E-04 1.70E-03 AP L10467-06 1/4/2006 Zn-65 2.90E-04 8.70E-04 3.50E-03 AP L10467-06 1/4/2006 Zr-95 -3.OOE-04 1.30E-03 5.40E-03 AP L8724-07 1/19/2005 GROSS BETA 1.91 E-02 1.50E-03 3.40E-03 AP L8796-07 2/2/2005 GROSS BETA 2.09E-02 1.60E-03 3.60E-03 AP 8 L8844-07 2/16/2005 GROSS BETA 1.65E-02 1.60E-03 4.OOE-03 AP AP 8

8 L8904-07 3/2/2005 L8979-07 3/16/2005 GROSS BETA GROSS BETA 1.57E-02 1.77E-02 1.60E-03 1.60E-03 4.OOE-03 4.OOE-03 L

AP 8 L9037-07 3/30/2005 GROSS BETA 1.47E-02 1.50E-03 3.90E-03 AP 8 L9122-07 4/13/2005 GROSS BETA 1.04E-02 1.50E-03 4.10E-03 AP 8 L9205-07 4/27/2005 GROSS BETA 1.60E-02 1.60E-03 3.90E-03

L AP 8 L9262-07 5/11/2005 GROSS BETA 8.40E-03 1.40E-03 4.OOE-03 I

AP 8 L9325-07 5/25/2005 GROSS BETA 7.90E-03 1.40E-03 4.OOE-03 AP 8 L9398-07 6/8/2005 GROSS BETA 9.80E-03 1.10E-03 2.70E-03 AP 8 L9472-07 6/22/2005 GROSS BETA 8.30E-03 1.1OE-03 2.90E-03 AP 8 L9530-07 7/6/2005 GROSS BETA 1.83E-02 1.60E-03 3.80E-03 AP 8 L9622-07 7/20/2005 GROSS BETA 1.27E-02 1.40E-03 3.50E-03

L AP 8 L9700-07 8/3/2005 GROSS BETA 1.75E-02 1.60E-03 3.70E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-117- f

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP 8 L9764-07 8/17/2005 GROSS BETA 2.74E-02 1.70E-03 3.20E-03 Li AP AP 8

8 L9825-07 8131/2005 L9869-07 9/14/2005 GROSS BETA 1.24E-02 GROSS BETA 2.33E-02 1.40E-03 1.70E-03 3.60E-03 3.60E-02 AP 8 L9962-07 9/28/2005 GROSS BETA 1.84E-02 1.60E-03 3.60E-02 AP 8 L10017-0710/1212005 GROSS BETA 1.40E-02 1.50E-03 3.80E-O,.

AP 8 L10102-0710126/2005 GROSS BETA 6.51E-03 8.30E-04 2.30E-02, AP 8 L10171-07 11/9/2005 GROSS BETA 1.87E-02 1.50E-03 3.50E-O3 AP 8 L10223-0711/22/2005 GROSS BETA 1.90E-02 1.70E-03 3.90E-03 AP 8 L10267-07 12/7/2005 GROSS BETA 1.52E-02 1.40E-03 3.40E-03 AP 8 L10314-0712/21/2005 GROSS BETA 2.47E-02 1.60E-03 3.20E-O' AP 8 L9096-07 3/30/2005 AcTh-228 8.OOE-04 1.20E-03 4.80E-0; AP 8 L9096-07 3/30/2005 Ag-108m -4.80E-04 2.60E-04 1.20E-01 AP 8 L9096-07 3/30/2005 Ag-11Om 1.40E-04 5.10E-04 2.10E-03 AP 8 L9096-07 3/30/2005 Ba-140 -3.40E-03 6.90E-03 3.80E-02 AP 8 L9096-07 3/30/2005 Be-7 1.21 E-0I 1.40E-02 1.80E-02 AP 8 L9096-07 3/30/2005 Ce-141 3.OOE-04 1.OOE-03 3.80E-03 AP 8 L9096-07 3/30/2005 Ce-144 -2.00E-04 1.40E-03 5.40E-03 AP 8 L9096-07 3/30/2005 Co-57 -2.60E-04 1.50E-04 6.60E-04 AP 8 L9096-07 3/30/2005 Co-58 -1.09E-03 6.30E-04 3.20E-03 AP 8 L9096-07 3/30/2005 Co-60 -2.00E-05 3.00E-04 1.50E-0I AP 8 L9096-07 3/30/2005 Cr-51 4.70E-03 7.80E-03 2.90E-02 AP 8 L9096-07 3/30/2005 Cs-134 -5.20E-04 3.60E-04 1.90E-0:3 AP 8 L9096-07 3/30/2005 Cs-1 37 5.1 OE-04 2.50E-04 5.80E-04 AP 8 L9096-07 3/30/2005 Fe-59 O.OOE+00 2.90E-03 1.30E-02 AP 8 L9096-07 3/30/2005 1-131 1.20E-02 1.302-02 4.70E-02 AP 8 L9096-07 3/30/2005 K-40 1.08E-02 6.40E-03 2.00E-0'2 AP 8 L9096-07 3/30/2005 La-140 -3.90E-03 8.OOE-03 4.30E-02 AP 8 L9096-07 3/30/2005 Mn-54 -2.1 OE-04 3.40E-04 1.60E-03 AP 8 L9096-07 3/30/2005 Nb-95 -1.50E-03 1.30E-03 6.00E-03 AP 8 L9096-07 3/30/2005 Ru-1 03 -9.80E-04 7.00E-04 3.50E-03 AP 8 L9096-07 3/30/2005 Ru-106 2.10E-03 1.50E-03 2.80E-03 AP L9096-07 3/30/2005 Sb-124 2.20E-03 1.50E-03 2.90E-03 8

AP L9096-07 3/30/2005 Sb-125 -8.60E-04 7.50E-04 3.40E-03 8

AP L9096-07 3/30/2005 Se-75 -3.20E-04 4.1OE-04 1.70E-0:3 8

AP L9096-07 3/30/2005 Zn-65 4.OOE-04 1.OOE-03 4.60E-0:3 8

AP L9096-07 3/30/2005 Zr-95 3.30E-04 7.40E-04 3.20E-0:3 8

AP L9559-07 7/6/2005 AcTh-228 5.002-04 1.40E-03 5.50E-0.3 8

AP L9559-07 7/6/2005 Ag-108m -2.50E-04 2.00E-04 9.50E-04 8

AP L9559-07 7/6/2005 Ag-110m 1.80E-04 3.1OE-04 1.30E-03 8

AP L9559-07 7/6/2005 Ba-140 1.05E-02 7.80E-03 2.60E-02 8

AP L9559-07 7/6/2005 Be-7 9.40E-02 1.50E-02 3.50E-0,2 8

AP L9559-07 7/6/2005 Ce-141 -5.OOE-04 1.70E-03 6.40E-03 8

AP L9559-07 7/6/2005 Ce-144 -1.10E-03 1.80E-03 6.90E-03 8

AP L9559-07 7/6/2005 Co-57 6.00E-05 2.10E-04 7.60E-04 8

AP L9559-07 7/6/2005 Co-58 4.20E-04 6.OOE-04 2.70E-03 8

AP L9559-07 7/6/2005 Co-60 -2.10E-04 3.70E-04 1.80E-03 8

AP L9559-07 7/6/2005 Cr-51 1.20E-02 1.10E-02 3.70E-02 8

AP L9559-07 7/6/2005 Cs-134 -3.70E-04 3.50E-04 1.70E-03 8

AP L9559-07 7/6/2005 Cs-137 1.40E-04 2.90E-04 1.10E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-118-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP 8 L9559-07 7/6/2005 Fe-59 1.30E-03 1.60E-03 6.10E-03 AP 8 L9559-07 7/6/2005 1-131 -4.OOE-02 2.30E-02 I.OOE-01 AP 8 L9559-07 7/6/2005 K-40 -4.70E-03 3.90E-03 2.OOE-02 AP 8 L9559-07 7/6/2005 La-140 1.21E-02 9.00E-03 3.OOE-02 AP 8 L9559-07 7/6/2005 Mn-54 -6.90E-04 3.50E-04 1.80E-03 AP 8 L9559-07 7/6/2005 Nb-95 -4.00E-04 1.10E-03 4.80E-03 L AP 8 L9559-07 7/6/2005 Ru-103 -4.80E-04 9.OOE-04 3.80E-03 AP 8 L9559-07 7/6/2005 Ru-106 3.90E-03 3.50E-03 1.20E-02 AP 8 L9559-07 7/6/2005 Sb-1 24 -2.50E-03 1.50E-03 9.OOE-03 AP 8 L9559-07 7/6/2005 Sb-125 -4.OOE-04 7.60E-04 3.20E-03 AP 8 L9559-07 7/6/2005 Se-75 -1.00E-04 6.40E-04 2.40E-03 AP 8 L9559-07 7/6/2005 Zn-65 O.OOE+00 9.80E-04 4.1 OE-03 AP 8 L9559-07 7/6/2005 Zr-95 2.OOE-04 1.1 OE-03 4.30E-03 AP 8 L10029-07 9/28/2005 AcTh-228 4.OOE-03 1.60E-03 4.10E-03 AP 8 L10029-07 9/28/2005 Ag-108m 5.50E-04 3.20E-04 1.OOE-03 AP 8 L10029-07 9/28/2005 Ag-110m 4.30E-04 4.30E-04 1.60E-03 AP 8 L10029-07 9/28/2005 Ba-140 1.60E-02 1.10E-02 3.70E-02 AP 8 L10029-07 9/28/2005 Be-7 1.03E-01 1.80E-02 4.20E-02

AP 8 L10029-07 9/28/2005 Ce-141 2.OOE-04 I.70E-03 6.1OE-03 AP 8 LI 0029-07 9/28/2005 Ce-144 -4.70E-03 2.40E-03 9.80E-03 AP 8 L10029-07 9/28/2005 Co-57 -1.80E-04 2.30E-04 9.30E-04 AP 8 L10029-07 9/28/2005 Co-58 1.70E-04 7.50E-04 3.OOE-03 L AP 8 L10029-07 9/28/2005 Co-60 -2.60E-04 4.50E-04 2.20E-03 AP 8 L10029-07 9/28/2005 Cr-51 -1.60E-02 1.40E-02 5.80E-02 AP 8 L10029-07 9/28/2005 Cs-134 -3.50E-04 3.50E-04 1.80E-03 AP 8 LI 0029-07 9/28/2005 Cs-137 1.04E-03 5.001E-04 1.50E-03 AP 8 L10029-07 9/28/2005 Fe-59 -8.OOE-04 1.70E-03 8.1 OE-03 AP 8 L10029-07 9/28/2005 1-131 -5.20E-02 2.50E-02 1.20E-01 AP 8 L10029-07 9/28/2005 K-40 2.50E-03 5.30E-03 2.1 OE-02 Ll AP 8 L10029-07 9/28/2005 La-140 1.80E-02 1.30E-02 4.30E-02 AP 8 L10029-07 9/28/2005 Mn-54 1.40E-04 5.1OE-04 2.OOE-03 AP 8 L10029-07 9/28/2005 Nb-95 -I.OOE-04 1.20E-03 5.20E-03 L AP 8 L10029-07 9/28/2005 Ru-103 1.OOE-04 1.40E-03 5.30E-03 AP AP AP 8

8 8

L10029-07 9/28/2005 L10029-07 9/28/2005 L10029-07 9/28/2005 Ru-106 Sb-124 Sb-125 1.10E-03

-2.OOE-03 O.OOE+00 4.40E-03 1.40E-03 8.60E-04 1.70E-02 9.10E-03 3.50E-03 U

AP 8 LI 0029-07 9/28/2005 Se-75 4.60E-04 7.70E-04 2.70E-03 AP 8 L10029-07 9/28/2005 Zn-65 1.50E-03 1.20E-03 4.OOE-03 AP 8 L10029-07 9/28/2005 Zr-95 -5.OOE-04 1.20E-03 5.40E-03 LI AP 8 LI 0467-07 1/4/2006 AcTh-228 -4.OOE-04 1.20E-03 5.1 OE-03 AP 8 LI 0467-07 1/4/2006 Ag-108m -1.30E-04 2.80E-04 1.20E-03 AP 8 L10467-07 1/4/2006 Ag-110m 3.60E-04 6.70E-04 2.50E-03 AP 8 L10467-07 1/4/2006 Ba-140 1.13E-02 6.50E-03 1.OOE-02 AP 8 L10467-07 1/4/2006 Be-7 6.40E-02 1.40E-02 3.60E-02

AP 8 L10467-07 1/4/2006 Ce-141 -2.70E-03 1.70E-03 6.80E-03 AP 8 L10467-07 1/4/2006 Ce-144 -1.10E-03 1.70E-03 6.50E-03 AP 8 L10467-07 1/4/2006 Co-57 2.OOE-05 2.30E-04 8.50E-04 AP 8 L10467-07 1/4/2006 Co-58 4.50E-04 4.70E-04 1.70E-03 AP 8 L10467-07 1/4/2006 Co-60 2.90E-04 3.20E-04 1.20E-03

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-119-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 L SAMPLE TYPE AP STATION 8

LSN END DATE L10467-07 1/4/2006 NUCLIDE Cr-51 CONC (pCi/m3) 2.OOE-03 STD.DEV.

(pCi/m3) 1.20E-02 MDC (pCi/m3i 4.50E-02 AP 8 L10467-07 1/4/2006 Cs-1 34 -6.OOE-05 3.00E-04 1.30E-03 AP 8 L10467-07 i 1/4/2006 Cs-1 37 2.10E-04 3.70E-04 1.40E-03 AP 8 L10467-07 7 1/4/2006 Fe-59 1.30E-03 1.30E-03 4.90E-03 AP 8 L10467-07 i 1/4/2006 1-131 1.10E-02 2.90E-02 1.10E-01 AP 8 L10467-07 1/4/2006 K-40 2.80E-03 3.40E-03 1.30E-02 AP 8 L10467-07 1/4/2006 La-140 1.30E-02 7.50E-03 1.20E-02 AP 8 L10467-07 i 1/4/2006 Mn-54 -1.20E-04 3.90E-04 1.70E-03 AP 8 L10467-07

1/4/2006 Nb-95 -7.OOE-04 1.40E-03 5.90E-03 AP 8 L10467-07 1/4/2006 Ru-1 03 1.50E-03 1.1OE-03 3.80E-03 AP 8 L10467-07 114/2006 Ru-106 -3.20E-03 4.00E-03 1.70E-02 AP 8 L10467-07 1/4/2006 Sb-124 4.30E-03 1.90E-03 2.30E-03 AP 8 L1 0467-07 1/4/2006 Sb-125 1.OOE-03 1.1 OE-03 3.80E-0:3 AP 8 LI 0467-07 1/4/2006 Se-75 4.90E-04 5.90E-04 2.1OE-03 AP 8 L10467-07 1/4/2006 Zn-65 -1.60E-03 1.00E-03 5.00E-03 AP 8 L10467-07 114/2006 Zr-95 -8.00E-04 1.00E-03 4.70E-0:3 AP 9 L8724-08 1/19/2005 GROSS BETA 1.84E-02 1.30E-03 2.90E-0:3 AP 9 L8796-08 2/2/2005 GROSS BETA 1.92E-02 1.40E-03 3.00E-03 AP 9 L8844-08 2/16/2005 GROSS BETA 1.86E-02 1.40E-03 3.40E-0.3 AP 9 L8904-08 3/2/2005 GROSS BETA 1.68E-02 1.40E-03 3.40E-0.3 AP 9 L8979-08 3/16/2005 GROSS BETA 1.27E-02 1.30E-03 3.40E-03 AP 9 L9037-08 3/30/2005 GROSS BETA 9.80E-03 1.20E-03 3.30E-03 AP 9 L9122-08 4/13/2005 GROSS BETA 7.70E-03 1.30E-03 3.60E-03 AP 9 L9205-08 4/27/2005 GROSS BETA 1.46E-02 1.40E-03 3.50E-03 AP 9 L9262-08 5/11/2005 GROSS BETA 7.50E-03 1.20E-03 3.50E-03 AP 9 L9325-08 5/25/2005 GROSS BETA 6.1OE-03 1.20E-03 3.40E-03 AP 9 L9398-08 6/8/2005 GROSS BETA 9.30E-03 1.20E-03 3.20E-03 AP 9 L9472-08 6/22/2005 GROSS BETA 9.20E-03 1.20E-03 3.20E-03 AP 9 L9530-08 7/6/2005 GROSS BETA 1.44E-02 1.40E-03 3.60E-03 AP 9 L9622-08 7/20/2005 GROSS BETA 1.55E-02 1.40E-03 3.30E-03 AP 9 L9700-08 8/3/2005 GROSS BETA 1.95E-02 1.50E-03 3.40E-03 AP 9 L9764-08 8/17/2005 GROSS BETA 2.50E-02 1.60E-03 3.00E-03 AP 9 L9825-08 8/31/2005 GROSS BETA 1.35E-02 1.30E-03 3.00E-03 AP 9 L9869-08 9/14/2005 GROSS BETA 2.28E-02 1.60E-03 3.50E-03 AP 9 L9962-08 9/28/2005 GROSS BETA 1.94E-02 1.50E-03 3.40E-03 AP 9 L10017-0810/12/2005 GROSS BETA 1.36E-02 1.40E-03 3.50E-03 AP 9 L10102-0810/26/2005 GROSS BETA 7.62E-03 8.00E-04 2.10E-03 AP 9 L10171-08 11/9/2005 GROSS BETA 2.15E-02 1.50E-03 3.20E-03 AP 9 L10223-0811/2212005 GROSS BETA 1.72E-02 1.50E-03 3.60E-03 AP 9 L10267-08 12/7/2005 GROSS BETA 1.51 E-02 1.30E-03 3.10E-03 AF 9 L10380-0112/21/2005 GROSS BETA 2.39E-02 1.60E-03 3.1 OE-C 3 AP 9 L9096-08 3/30/2005 AcTh-228 -1.20E-03 1.10E-03 5.20E-C03 AF 9 L9096-08 3/30/2005 Ag-108m O.OOE+00 1.80E-04 7.60E-C4 AF 9 L9096-08 3/30/2005 Ag-11O -4.20E-04 3.00E-04 1.80E-03 AF 9 L9096-08 3/30/2005 Ba-140 4.OOE-04 4.90E-03 2.60E-C2 AP' 9 L9096-08 3130/2005 Be-7 1.13E-01 1.30E-02 1.70E-02 AP' 9 L9096-08 3/30/2005 Ce-141 -2.17E-03 7.80E-04 3.60E-C3 AP' 9 L9096-08 3/30/2005 Ce-144 2.00E-04 1.10E-03 4.10E-C3 AP 9 L9096-08 3/30/2005 Co-57 1.1OE-04 1.30E-04 4.60E-C4 AP' 9 L9096-08 3/30/2005 Co-58 -2.20E-04 2.20E-04 1.50E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-120-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 L SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

AP L9096-08 3/30/2005 Co-60 8.00E-05 5.30E-04 2.20E-03 AP L9096-08 3/30/2005 Cr-51 2.80E-03 7.20E-03 2.80E-02

&-k AP L9096-08 3/30/2005 Cs-1 34 -8.00E-O5 3.70E-04 1.60E-03 AP L9096-08 3/3012005 Cs-1 37 1.50E-04 2.30E-04 9.20E-04 AP L9096-08 3/30/2005 Fe-59 O.OOE+00 2.OOE-03 9.40E-03 AP L9096-08 3/30/2005 1-131 O.OOE+00 1.20E-02 5.20E-02 AP L9096-08 3/30/2005 K-40 2.60E-03 3.40E-03 1.30E-02 AP L9096-08 3/30/2005 La-140 4.00E-04 5.60E-03 2.90E-02 3.30E-04 1.20E-03 AP AP AP L9096-08 L9096-08 L9096-08 3/30/2005 3/30/2005 3/30/2005 Mn-54 Nb-95 Ru-1 03 3.20E-04

-I.OOE-03 4.20E-04 1.10E-03 7.80E-04 5.1 OE-03 2.90E-03

]

AP L9096-08 3/30/2005 Ru-106 -1.70E-03 2.1 OE-03 1.OOE-02 AP L9096-08 3/30/2005 Sb-124 O.OOE+00 1.30E-03 6.70E-03 AP L9096-08 3/30/2005 Sb-125 1.80E-04 6.1 OE-04 2.40E-03 AP L9096-08 3130/2005 Se-75 -3.OOE-04 3.10E-04 1.40E-03 ,1 AP L9096-08 3/30/2005 Zn-65 1.31 E-03 8.00E-04 2.40E-03 AP L9096-08 3/30/2005 Zr-95 -1.70E-04 9.1 OE-04 4.00E-03 AP L9559-08 7/6/2005 AcTh-228 -3.OOE-04 1.40E-03 5.60E-03 AP L9559-08 7/612005 Ag-108m -3.OOE-04 2.00E-04 9.60E-04 AP L9559-08 7/6/2005 Ag-1I1m 8.50E-04 6.60E-04 2.20E-03 AP L9559-08 7/6/2005 Ba-140 3.40E-03 5.90E-03 2.50E-02 AP AP L9559-08 L9559-08 7/6/2005 7/6/2005 Be-7 Ce-141 7.50E-02 2.90E-03 1.20E-02 1.50E-03 2.40E-02 4.80E-03 L

AP L9559-08 7/6/2005 Ce-144 9.OOE-04 1.70E-03 6.10E-03 AP AP L9559-08 L9559-08 7/612005 7/612005 Co-57 Co-58

-1.1OE-04 9.OOE-05 2.40E-04 2.1 OE-04 5.OOE-04 4.30E-04 8.1 OE-04 2.1 OE-03 1.70E-03 U

AP L9559-08 7/6/2005 Co-60 AP AP AP L9559-08 L9559-08 L9559-08 7/612005 7/6/2005 7/6/2005 Cr-51 Cs-134 Cs-137 O.OOE+00 3.70E-04 1.20E-04 1.1OE-02 2.90E-04 3.1 OE-04 4.30E-02 9.90E-04 1.20E-03 L

AP L9559-08 7/6/2005 Fe-59 6.00E-04 1.40E-03 5.80E-03 AP L9559-08 7/6/2005 1-131 -1.OOE-02 2.30E-02 9.30E-02 AP L9559-08 7/6/2005 K-40 -1.70E-03 4.30E-03 1.90E-02 AP L9559-08 7/6/2005 La-140 3.90E-03 6.70E-03 2.90E-02 AP L9559-08 716/2005 Mn-54 -4.20E-04 4.00E-04 1.80E-03 AP L9559-08 716/2005 Nb-95 -1.35E-03 9.00E-04 4.60E-03 AP L9559-08 7/6/2005 Ru-103 -9.20E-04 8.60E-04 3.80E-03 AP L9559-08 7/6/2005 Ru-106 4.80E-03 3.1 OE-03 1.OOE-02 AP L9559-08 7/6/2005 Sb-124 -8.00E-04 1.40E-03 7.50E-03 AP L9559-08 7/6/2005 Sb-125 -9.60E-04 7.50E-04 3.40E-03 AP L9559-08 7/6/2005 Se-75 -4.60E-04 4.80E-04 2.OOE-03 AP L9559-08 7/6/2005 Zn-65 2.37E-03 8.40E-04 8.00E-04 AP L9559-08 7/6/2005 Zr-95 -1.OOE-03 1.1OE-03 5.OOE-03 AP 9 L10029-08 9/28/2005 AcTh-228 1.90E-03 1.60E-03 5.50E-03 AP 9 L10029-08 9/28/2005 Ag-108m O.OOE+00 3.20E-04 1.20E-03 AP 9 L10029-08 9/28/2005 Ag-110m 2.00E-04 7.1 OE-04 2.80E-03 AP 9 L10029-08 9/28/2005 Ba-140 -7.30E-03 9.OOE-03 4.40E-02 AP 9 L10029-08 9/28/2005 Be-7 9.60E-02 1.60E-02 3.80E-02

AP 9 L10029-08 9/2812005 Ce-141 -3.OOE-04 1.70E-03 6.10E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-121-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3)

I AP 9 L10029-08 9/28/2005 Ce-144 -1.20E-03 2.20E-03 8.40E-03 L AP AP 9

9 L10029-08 L10029-08 9/28/2005 9/28/2005 Co-57 Co-58 1.60E-04

-5.OOE-05 2.50E-04 6.50E-04 8.80E-04 2.70E-05.

AP 9 L10029-08 9/28/2005 Co-60 -6.OOE-05 4.50E-04 2.00E-032 AP 9 L10029-08 9/28/2005 Cr-51 -1.70E-02 1.30E-02 5.30E-02 AP 9 L10029-08 9/28/2005 Cs-134 8.00E-05 4.00E-04 1.60E-02' AP 9 L10029-08 9/28/2005 Cs-137 1.OOE-04 2.90E-04 1.20E-O; L AP AP AP 9

9 9

L10029-08 L10029-08 L10029-08 9/28/2005 9/28/2005 9/28/2005 Fe-59 1-131 K-40 2.80E-03

-1.1 OE-02

-5.50E-03 2.40E-03 2.60E-02 5.50E-03 8.30E-03 1.OOE-01 2.50E-02 AP 9 L10029-08 9/28/2005 La-140 -8.00E-03 1.OOE-02 5.10E-02 L AP AP 9

9 L10029-08 L10029-08 9/28/2005 9/28/2005 Mn-54 Nb-95

-3.90E-04 6.00E-04 5.40E-04 1.20E-03 2.30E-03 4.50E-OJ AP 9 L10029-08 9/28/2005 Ru-103 -8.OOE-04 1.OOE-03 4.40E-03 L AP AP 9

9 L10029-08 L10029-08 9/28/2005 9/28/2005 9/28/2005 Ru-106 Sb-124 Sb-125 O.OOE+00

-9.OOE-04 1.40E-03 3.90E-03 1.60E-03 1.10E-03 1.60E-02 8.30E-03 3.602-0:

AP 9 LI 0029-08 L AP AP AP 9

9 9

LI 0029-08 L10029-08 L10029-08 9/28/2005 9/28/2005 9/28/2005 Se-75 Zn-65 Zr-95

-5.20E-04 O.OOE+00

-5.00E-04 6.50E-04 8.40E-04 1.1 0E-03 2.50E-0:'

3.70E-03 5.00E-03

, AP AP L10467-08 L10467-08 1/4/2006 1/4/2006 AcTh-228 Ag-108m 1.40E-03

-1.20E-04 1.10E-03 2.30E-04 3.80E-03 9.70E-04 AP L10467-08 1/4/2006 Ag-110m 1.60E-04 4.90E-04 2.00E-03 AP Li 0467-08 1/4/2006 Ba-140 -1.10E-02 1.10E-02 5.30E-02 AP Li 0467-08 1/4/2006 Be-7 7.90E-02 1.30E-02 2.80E-02:

AP L10467-08 1/4/2006 Ce-141 1.902-03 1.50E-03 5.00E-03 AP L10467-08 1/4/2006 Ce-144 8.00E-04 1.70E-03 6.20E-03 AP Li 0467-08 1/4/2006 Co-57 -2.00E-05 2.30E-04 8.40E-04 AP Li 0467-08 1/4/2006 Co-58 -3.70E-04 6.20E-04 2.70E-03 AP L10467-08 1/4/2006 Co-60 -3.50E-04 3.70E-04 1.80E-03 AP L10467-08 1/4/2006 Cr-51 -6.90E-03 9.40E-03 4.00E-02 AP L10467-08 1/4/2006 Cs-134 1.70E-04 3.1 OE-04 1.20E-03 AP Li 0467-08 1/4/2006 Cs-137 4.00E-05 2.50E-04 1.00E-03 AP LI0467-08 1/4/2006 Fe-59 2.50E-03 1.50E-03 4.60E-03 AP Li 0467-08 114/2006 1-131 1.202-02 2.90E-02 1.1 OE-0 I AP L10467-08 1/4/2006 K-40 3.10E-03 4.90E-03 1.80E-0:2 AP L10467-08 1/4/2006 La-140 -1.30E-02 1.30E-02 6.10E-02 AP L10467-08 1/4/2006 Mn-54 -3.30E-04 4.70E-04 2.00E-0:3 AP Li 0467-08 1/4/2006 Nb-95 2.OOE-04 1.10E-03 4.60E-0.3 AP Li 0467-08 1/4/2006 Ru-103 2.30E-04 7.00E-04 2.80E-0:3 AP Li 0467-08 1/4/2006 Ru-106 1.OOE-04 3.00E-03 1.20E-0.2 AP L10467-08 1/4/2006 Sb-124 -8.00E-04 1.80E-03 8.60E-03 AP L10467-08 1/4/2006 Sb-125 -7.50E-04 9.1 OE-04 3.80E-03 AP L10467-08 1/4/2006 Se-75 9.OOE-05 5.90E-04 2.20E-03 AP LI0467-08 1/4/2006 Zn-65 -3.00E-04 1.00E-03 4.30E-03 AP LI0467-08 1/4/2006 Zr-95 -1.30E-04 9.50E-04 4.10E-03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-122-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 Li SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCVm3)

CF L8724-01 1/19/2005 1-131 5.50E-03 6.10E-03 2.10E-02 CF L8796-01 2/2/2005 1-131 -4.1 OE-03 3.60E-03 1.50E-02 CF L8844-01 2/16/2005 1-131 -2.OOE-03 3.70E-03 1.50E-02 CF L8904-01 3/2/2005 1-131 5.60E-03 3.70E-03 1.20E-02 CF L8979-01 3/16/2005 1-131 O.OOE+00 4.60E-03 1.80E-02 CF L9037-01 3/30/2005 1-131 -3.70E-03 5.40E-03 2.20E-02 CF L9122-01 4/13/2005 1-131 4.70E-03 3.90E-03 1.30E-02 CF L9205-01 4/27/2005 1-131 3.1 OE-03 5.90E-03 2.20E-02 ]I CF L9262-01 5/11/2005 1-131 1.80E-03 5.OOE-03 1.80E-02 2.40E-02 CF L9325-01 5/25/2005 1-131 5.OOE-04 6.20E-03 CF L9398-01 6/8/2005 1-131 -2.1 OE-03 5.10E-03 2.OOE-02 CF L9472-01 6/22/2005 1-131 8.OOE-04 5.80E-03 2.20E-02 CF L9530-01 7/6/2005 1-131 -6.50E-03 6.20E-03 2.80E-02 CF L9622-01 7/20/2005 1-131 6.OOE-04 4.20E-03 1.60E-02 CF L9700-01 8/3/2005 1-131 1.70E-03 5.60E-03 2.1OE-02 CF L9713-01 8/8/2005 1-131 -4.70E-03 9.70E-03 3.80E-02 CF L9764-01 8/17/2005 1-131 1.42E-02 7.80E-03 2.50E-02 CF L9825-01 8/31/2005 1-131 9.50E-03 6.50E-03 2.1 OE-02 CF L9869-01 9/14/2005 1-131 3.OOE-04 6.OOE-03 2.30E-02 5.10E-03 1.70E-02 CF CF 1 L9962-01 9/28/2005 L10017-0110/12/2005 1-131 1-131 8.OOE-03

-1.90E-03 4.40E-03 1.80E-02 f

1-131 4.OOE-04 4.60E-03 1.80E-02 CF 1 L10102-0110/26/2005 L CF CF 1

1 L10171-01 11/9/2005 LI 0223-0111/22/2005 1-131 1-131 5.OOE-04

-9.OOE-04 8.OOE-03 8.30E-03 3.OOE-02 3.20E-02 V' CF 1 L10267-01 12/7/2005 1-131 3.60E-03 5.OOE-03 1.80E-02 CF I LI 0314-0112/21/2005 1-131 4.30E-03 3.80E-03 1.30E-02 CF 2 L8724-02 1/19/2005 1-131 -5.OOE-04 6.OOE-03 2.40E-02 CF 2 L8796-02 2/2/2005 1-131 -1.30E-03 4.30E-03 I.70E-02 CF 2 L8844-02 2/16/2005 1-131 -1.20E-03 4.50E-03 1.80E-02 CF 2 L8904-02 3/2/2005 1-131 4.70E-03 4.1OE-03 1.40E-02 CF 2 L8979-02 3/16/2005 1-131 O.OOE+00 4.80E-03 1.90E-02 CF 2 L9037-02 3/30/2005 1-131 6.OOE-04 5.40E-03 2.1OE-02 CF 2 L9122-02 4/13/2005 1-131 2.20E-03 4.40E-03 1.70E-02 CF 2 L9205-02 4/27/2005 1-131 8.90E-03 6.70E-03 2.20E-02 CF 2 L9262-02 5/11/2005 1-131 -1.60E-03 5.1 OE-03 2.1OE-02 CF 2 L9325-02 5/25/2005 1-131 -3.50E-03 7.10E-03 2.90E-02 CF 2 L9398-02 6/8/2005 1-131 -6.20E-03 3.90E-03 1.80E-02 CF 2 L9472-02 6/22/2005 1-131 1.17E-02 6.60E-03 2.1OE-02 CF 2 L9530-02 7/6/2005 1-131 -4.OOE-04 3.90E-03 1.50E-02 CF 2 L9622-02 7/20/2005 1-131 -1.OOE-04 4.50E-03 1.70E-02 CF 2 L9700-02 8/3/2005 1-131 -2.80E-03 5.70E-03 2.30E-02 CF 2 L9764-02 8/17/2005 1-131 -1.30E-03 5.50E-03 2.20E-02 CF 2 L9825-02 8/31/2005 1-131 -6.90E-03 5.1OE-03 2.30E-02 CF 2 L9869-02 9/14/2005 1-131 -5.70E-03 4.60E-03 2.OOE-02 CF 2 L9962-02 9/28/2005 1-131 -2.40E-03 5.40E-03 2.20E-02 CF 2 L10017-0210/12/2005 1-131 -4.70E-03 4.30E-03 1.80E-02 CF 2 L10102-0210/26/2005 1-131 6.50E-03 6.1 OE-03 2.1OE-02 CF 2 L10171-02 11/9/2005 1-131 -5.OOE-04 6.50E-03 2.50E-02 CF 2 Li 0223-0211/22/2005 1-131 -2.70E-03 5.90E-03 2.50E-02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-123-

4i Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC I SAMFLE TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCi/m3' CF 2 L10267-02 12/7/2005 1-131 1.OOE-04 4.1OE-03 1.60E-02 L CF CF 2

3 LI 0314-0212/21/2005 L8724-03 1/19/2005 1-131 1-131

-9.80E-03

-5.40E-03 3.70E-03 5.40E-03 1.80E-02 2.20E-02 CF 3 L8796-03 2/2/2005 1-131 -2.50E-03 3.70E-03 1.50E-02

. CF CF 3

3 L8844-03 2/16/2005 L8904-03 3/2/2005 1-131 1-131 1-131

-1.OOE-03 2.70E-03

-1.00E-03 3.90E-03 3.70E-03 4.00E-03 1.50E-02 1.30E-02 1.60E-O2 CF 3 L8979-03 3/16/2005 CF 3 L9037-03 3/30/2005 1-131 6.40E-03 4.90E-03 1.60E-02 CF 3 L9122-03 4/13/2005 1-131 -9.00E-04 4.00E-03 1.60E-02 CF 3 L9205-03 4/27/2005 1-131 1.1OE-03 6.20E-03 2.30E-02 CF 3 L9262-03 5/11/2005 1-131 -2.30E-03 4.20E-03 1.70E-02 L~ CF CF 3

3 L9325-03 5/25/2005 L9398-03 6/8/2005 1-131 1-131

-4.50E-03

-1.14E-02 7.30E-03 5.30E-03 2.90E-02 2.50E-02 CF 3 L9472-03 6/22/2005 1-131 -2.00E-04 7.10E-03 2.70E-02 CF 3 L9530-03 7/6/2005 1-131 6.00E-03 4.20E-03 1.40E-02 FU CF CF CF CF CF 3

3 3

L9622-03 7/20/2005 L9700-03 8/3/2005 L9764-03 8/17/2005 L9825-03 8/31/2005 L9869-03 9/14/2005 1-131 1-131 1-131 1-131 1-131

-2.10E-03

-4.00E-04

-1.OOE-03 4.50E-03

-3.OOE-04 5.1OE-03 6.90E-03 5.40E-03 6.102-03 6.20E-03 2.00E-02 2.70E-02 2.20E-02 2.20E-02 2.40E-02 2.70E-0:2 CF 3 L9962-03 9/28/2005 1-131 -1.20E-03 6.90E-03 CF 3 L10017-0310/12/2005 1-131 -2.20E-03 4.40E-03 1.80E-02 CF 3 L10102-0310/26/2005 1-131 3.50E-03 6.50E-03 2.40E-02 CF 3 L10171-03 11/9/2005 1-131 -7.00E-03 9.40E-03 3.70E-02 CF 3 LI 0223-0311/22/2005 1-131 2.80E-03 8.40E-03 3.10E-02 CF 3 L10267-03 12/7/2005 1-131 -2.00E-03 6.80E-03 2.60E-02 CF 3 LI 0314-0312/21/2005 1-131 6.30E-03 4.80E-03 1.60E-02 CF 4 L8724-04 1/19/2005 1-131 -6.50E-03 6.60E-03 2.70E-02 CF 4 L8796-04 2/2/2005 1-131 6.30E-03 4.20E-03 1.40E-02 CF 4 L8844-04 2116/2005 1-131 3.20E-03 4.40E-03 1.60E-0.2 CF 4 L8904-04 3/2/2005 1-131 1.OOE-03 3.50E-03 1.30E-0.2 CF 4 L8979-04 3/16/2005 1-131 -4.20E-03 4.70E-03 2.00E-0.2 CF 4 L9037-04 3/30/2005 1-131 -7.00E-04 4.50E-03 1.80E-0.2 CF 4 L9122-04 4/13/2005 1-131 -2.00E-03 5.60E-03 2.20E-0.2 CF 4 L9205-04 4/27/2005 1-131 1.702-02 6.50E-03 1.80E-0.2 CF 4 L9262-04 5/11/2005 1-131 -8.OOE-04 4.00E-03 1.60E-02 CF 4 L9325-04 5/25/2005 1-131 3.60E-03 6.90E-03 2.60E-02 CF 4 L9398-04 6/8/2005 1-131 -5.60E-03 4.80E-03 2.1OE-02 CF 4 L9472-04 6/22/2005 1-131 -4.70E-03 4.50E-03 2.00E-02 CF 4 L9530-04 7/6/2005 1-131 6.1OE-03 4.80E-03 1.60E-02 CF 4 L9622-04 7/20/2005 1-131 2.30E-03 4.40E-03 1.60E-02 CF 4 L9700-04 8/3/2005 1-131 7.90E-03 6.1OE-03 2.00E-02 CF 4 L9764-04 8117/2005 1-131 3.30E-03 6.00E-03 2.20E-02 CF 4 L9825-04 8/31/2005 1-131 -8.30E-03 4.90E-03 2.20E-02 CF 4 L9869-04 9/14/2005 1-131 4.00E-03 5.50E-03 2.OOE-02 CF 4 L9962-04 9/28/2005 1-131 1.OOE-04 4.60E-03 1.80E-02 CF 4 L10017-0410/12/2005 1-131 7.70E-03 4.30E-03 1.40E-02 CF 4 Li 0102-0410/26/2005 1-131 2.80E-03 5.30E-03 1.90E-02 CF 4 L10171-04 11/9/2005 1-131 1.16E-02 8.30E-03 2.80E-02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-124-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC I TYPE STATION LSN DATE NUCLIDE (pCi/m3) (pCi/m3) (pCim3)

CF 4 L10223-0411/22/2005 1-131 5.20E-03 7.20E-03 2.60E-02 CF 4 L10267-04 12/7/2005 1-131 -2.70E-03 6.40E-03 2.50E-02 I

CF 4 LI 0314-0412/21/2005 1-131 -1.30E-03 3.80E-03 1.60E-02 CF 5 L8724-05 1/19/2005 1-131 -4.20E-03 5.80E-03 2.40E-02 CF 5 L8796-05 2/2/2005 1-131 -2.70E-03 4.30E-03 1.70E-02 CF 5 L8844-05 2/16/2005 1-131 -5.30E-03 4.30E-03 1.80E-02 CF 5 L8904-05 3/2/2005 1-131 6.OOE-04 4.1 OE-03 1.60E-02 CF 5 L8979-05 3/16/2005 1-131 5.30E-03 4.60E-03 1.60E-02 CF 5 L9037-05 3/30/2005 1-131 -3.80E-03 4.80E-03 2.OOE-02 CF 5 L9122-05 4/13/2005 1-131 O.OOE+00 4.80E-03 1.90E-02 CF 5 L9205-05 4/27/2005 1-131 -2.OOE-04 7.OOE-03 2.70E-02 CF 5 L9262-05 5/11/2005 1-131 -8.OOE-04 4.40E-03 1.80E-02 CF 5 L9325-05 5/25/2005 1-131 2.20E-03 7.OOE-03 2.60E-02 CF 5 L9398-05 6/8/2005 1-131 1.15E-02 5.40E-03 1.60E-02 CF 5 L9472-05 6/22/2005 1-131 -4.90E-03 6.20E-03 2.50E-02 CF 5 L9530-05 7/6/2005 1-131 4.90E-03 4.40E-03 1.50E-02 CF 5 L9622-05 7/12/2005 1-131 -3.40E-03 4.20E-03 1.50E-02

, S-CF 5 L10102-0510/26/2005 1-131 -1 .1OE-03 9.80E-03 3.70E-02 CF 5 L10171-05 11/9/2005 1-131 2.20E-03 7.20E-03 2.80E-02 CF 5 L10223-0511/22/2005 1-131 -5.90E-03 8.10E-03 3.40E-02 CF 5 L10267-05 12/7/2005 1-131 -5.OOE-04 7.40E-03 2.80E-02 CF 5 L10314-0512/21/2005 1-131 3.60E-03 6.20E-03 2.20E-02 CF 7 L8724-06 1/19/2005 1-131 1.OOE-02 6.90E-03 2.30E-02 CF CF 7

7 L8796-06 2/2/2005 L8844-06 2/16/2005 1-131 1-131 5.70E-03 3.20E-03 4.1 OE-03 4.30E-03 4.60E-03 1.40E-02 1.60E-02 1.80E-02 I

CF CF CF 7

7 7

L8904-06 3/2/2005 L8979-06 3/16/2005 L9037-06 3/30/2005 1-131 1-131 1-131

-2.60E-03 1.15E-02 6.OOE-04 5.60E-03 5.50E-03 1.70E-02 2.10E-02 LI CF 7 L9122-06 4/13/2005 1-131 -4.60E-03 4.30E-03 1.90E-02 CF 7 L9205-06 4/27/2005 1-131 3.60E-03 6.80E-03 2.50E-02 CF CF 7

7 L9262-06 5/11/2005 L9325-06 5/25/2005 1-131 1-131

-2.60E-03

-9.40E-03 5.30E-03 7.OOE-03 2.20E-02 3.1 OE-02 II CF CF CF 7

7 7

L9398-06 6/8/2005 L9472-06 6/22/2005 L9530-06 7/6/2005 1-131 1-131 1-131

-2.90E-03

-7.50E-03

-3.1 OE-03 4.80E-03 6.40E-03 3.90E-03 2.OOE-02 2.70E-02 1.60E-02 LI 5.OOE-03 2.OOE-02 CF CF CF 7

7 7

L9622-06 7/20/2005 L9700-06 8/3/2005 L9764-06 8/17/2005 1-131 1-131 1-131

-1.80E-03 5.40E-03

-3.70E-03 5.80E-03 5.50E-03 2.1 OE-02 2.30E-02 L

CF 7 L9825-06 8/31/2005 1-131 2.40E-03 5.30E-03 2.OOE-02 CF 7 L9869-06 9/14/2005 1-131 2.50E-03 4.80E-03 1.80E-02 CF 7 L9962-06 9/28/2005 1-131 -4.30E-03 6.30E-03 2.50E-02 CF 7 L10017-0610/12/2005 1-131 2.OOE-03 5.50E-03 2.OOE-02 1.90E-02 1

CF 7 L10102-0610/26/2005 1-131 -7.OOE-04 4.80E-03 CF 7 L10171-06 11/9/2005 1-131 5.90E-03 8.1 OE-03 2.90E-02 7 LI 0223-0611/22/2005 1-131 1.90E-03 6.40E-03 2.50E-02 F

CF CF 7 L10267-06 12/7/2005 1-131 1.80E-03 5.30E-03 2.OOE-02 CF 7 Li 0314-0612/21/2005 1-131 1.30E-03 4.1 OE-03 1.50E-02 CF 8 L8724-07 1/19/2005 1-131 3.60E-03 6.60E-03 2.40E-02 CF 8 L8796-07 2/2/2005 1-131 -5.40E-03 4.80E-03 2.OOE-02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-125-

L Seabrook Station Radiological Environmental Monitoring ;Program Data - 2005 SAMFLE END CONC STD.DEV. MDC l TYPE STATION LSN DATE NUCLIDE (pCUm3) (pCi/m3) (pCi/m3i CF 8 L8844-07 2/16/2005 1-131 5.20E-03 4.70E-03 1.60E-02 U CF CF 8

8 L8904-07 3/2/2005 L8979-07 3/16/2005 1-131 1-131 4.40E-03 O.OOE+00 4.90E-03 5.60E-03 1.70E-02 2.10E-02 2.20E-02 CF 8 L9037-07 3/30/2005 1-131 3.40E-03 6.20E-03 L9122-07 4/13/2005 1-131 O.OOE+00 5.70E-03 2.20E-02 L CF CF CF 8

8 8

L9205-07 4/27/2005 L9262-07 5/11/2005 1-131 1-131 3.60E-03

-3.00E-04 6.80E-03 3.40E-03 2.50E-02 1.50E-02 CF 8 L9325-07 5/25/2005 1-131 1.90E-03 6.70E-03 2.60E-02 L CF CF 8

8 L9398-07 6/8/2005 L9472-07 6/22/2005 1-131 1-131 2.30E-03

-1.80E-03 4.40E-03 5.00E-03 1.60E-02 2.00E-02 CF 8 L9530-07 7/6/2005 1-131 -4.00E-03 4.40E-03 1.80E-02 II CF CF 8 8 L9622-07 7/20/2005 L9700-07 8/3/2005 1-131 1-131

-1.90E-03 3.30E-03 5.30E-03 6.20E-03 2.20E-02 2.30E-02 L CF CF 8

8 L9764-07 8/17/2005 L9825-07 8/31/2005 1-131 1-131

-6.20E-03

-9.80E-03 6.10E-03 4.60E-03 2.60E-02 2.30E-02 CF 8 L9869-07 9/14/2005 1-131 -1.50E-03 5.50E-03 2.20E-02 L CF CF CF 8

8 8

L9962-07 9/28/2005 L10017-0710/12/2005 L10102-0710/26/2005 1-131 1-131 1-131

-9.OOE-04

-1.00E-03

-7.30E-03 4.90E-03 5.20E-03 5.50E-03 2.OOE-0:2 2.00E-02 2.40E-02 CF 8 L10171-07 11/9/2005 1-131 -4.40E-03 8.20E-03 3.30E-0:2 CF 8 Li 0223-0711/2212005 1-131 4.40E-03 8.30E-03 3.OOE-0;2 CF 8 L10267-07 12/7/2005 1-131 6.OOE-04 5.30E-03 2.00E-0.2 CF 8 Li 0314-0712/21/2005 1-131 2.00E-04 3.90E-03 1.50E-02 CF 9 L8724-08 1/19/2005 1-131 7.70E-03 4.80E-03 1.60E-02 CF 9 L8796-08 2/2/2005 1-131 6.OOE-03 4.10E-03 1.40E-02 CF 9 L8844-08 2/16/2005 1-131 5.10E-03 3.80E-03 1.30E-02 CF 9 L8904-08 3/2/2005 1-131 1.40E-03 3.90E-03 1.50E-02 CF 9 L8979-08 3/16/2005 1-131 O.OOE+00 5.20E-03 2.00E-02 CF 9 L9037-08 3/30/2005 1-131 6.50E-03 5.1 OE-03 1.70E-02 CF 9 L9122-08 4/13/2005 1-131 1.90E-03 3.80E-03 1.40E-02 CF 9 L9205-08 4/27/2005 1-131 5.10E-03 5.30E-03 1.90E-02 CF 9 L9262-08 5/1112005 1-131 -1.20E-03 4.60E-03 1.80E-02 CF 9 L9325-08 5/25/2005 1-131 1.75E-02 6.90E-03 1.90E-02 CF 9 L9398-08 6/8/2005 1-131 5.20E-03 5.60E-03 2.00E-02 CF 9 L9472-08 6/22/2005 1-131 -7.40E-03 5.90E-03 2.50E-02 CF 9 L9530-08 7/6/2005 1-131 -2.OOE-04 4.30E-03 1.70E-02 CF 9 L9622-08 7/20/2005 1-131 4.80E-03 5.10E-03 1.80E-02 CF 9 L9700-08 8/3/2005 1-131 7.70E-03 5.60E-03 1.90E-02 CF 9 L9764-08 8/17/2005 1-131 -4.30E-03 4.50E-03 2.00E-02 CF 9 L9825-08 8/31/2005 1-131 8.20E-03 5.90E-03 2.00E-02 CF 9 L9869-08 9/14/2005 1-131 2.30E-03 4.40E-03 1.70E-02 CF 9 L9962-08 9/28/2005 1-131 -5.90E-03 5.40E-03 2.30E-02 CF 9 L10017-0810/12/2005 1-131 -1.00E-03 4.70E-03 1.80E-02 CF 9 L10102-0810/26/2005 1-131 -2.70E-03 5.00E-03 2.00E-02 CF 9 L10171-08 11/9/2005 1-131 2.20E-03 6.80E-03 2.60E-02 CF 9 L10223-0811/2212005 1-131 6.40E-03 6.20E-03 2.10E-02 CF 9 L10267-08 1217/2005 1-131 8.30E-03 5.70E-03 1.90E-02 CF 9 L10380-0112/21/2005 1-131 1.OOE-03 1.40E-02 5.10E-02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-126-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 L SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH 3 L8947-01 3/10/2005 AcTh-228 -4.50E+01 3.50E+01 1.50E+02 FH 3 L8947-01 3/10/2005 Ag-108m 9.90E+00 6.30E+00 2.10E+01 FH 3 L8947-01 3/10/2005 Ag-110m 9.OOE+00 1.20E+01 4.40E+01 FH 3 L8947-01 3/10/2005 Ba-140 6.00E+00 1.10E+01 4.60E+01 FH 3 L8947-01 3/10/2005 Be-7 -2.70E+01 7.70E+01 3.00E+02 FH 3 L8947-01 3110/2005 Ce-141 1.00E+01 1.30E+01 4.40E+01 FH 3 L8947-01 3/1012005 Ce-144 -3.90E+01 3.40E+01 1.30E+02 FH 3 L8947-01 3/10/2005 Co-57 8.20E+00 4.60E+00 1.50E+01 FH 3 L8947-01 3/10/2005 Co-58 -1.47E+01 9.50E+00 4.20E+01 FH 3 L8947-01 3/10/2005 Co-60 4.OOE+00 1.20E+01 4.60E+01 FH 3 L8947-01 3/10/2005 Cr-51 -5.50E+01 7.80E+01 3.OOE+02 7 FH 3 L8947-01 3/10/2005 Cs-134 -1.40E+01 1.10E+01 4.70E+01 FH 3 L8947-01 3/10/2005 Cs-137 -5.70E+00 7.40E+00 3.20E+01 FH 3 L8947-01 3110/2005 Fe-59 -2.10E+01 4.20E+01 1.70E+02 FH 3 L8947-01 3/10/2005 1-131 2.OOE+00 1.60E+01 6.20E+01 FH 3 L8947-01 3/10/2005 K-40 3.11E+03 3.40E+02 5.80E+02 t FH 3 L8947-01 3110/2005 La-140 7.OOE+00 1.20E+01 5.30E+01 FH 3 L8947-01 3/10/2005 Mn-54 7.OOE+00 1.10E+01 3.90E+01 FH 3 L8947-01 3/1012005 Nb-95 -6.OOE+00 1.10E+01 4.50E+01 U FH 3 L8947-01 3/10/2005 Ru-103 1.22E+01 9.OOE+00 3.OOE+01 FH 3 L8947-01 3/10/2005 Ru-1 06 6.40E+01 9.OOE+01 3.20E+02 FH 3 L8947-01 3/10/2005 Sb-124 -9.OOE+00 2.OOE+01 9.50E+01 FH 3 L8947-01 3/10/2005 Sb-125 8.00E+00 2.40E+01 8.70E+01 FH 3 L8947-01 3/10/2005 Se-75 -2.20E+00 9.80E+00 3.60E+01 FH 3 L8947-01 3/10/2005 Zn-65 2.60E+01 2.20E+01 7.40E+01 L FH 3 L8947-01 3/10/2005 Zr-95 1.20E+01 1.50E+01 5.40E+01 FH 3 L9342-01 6/1/2005 AcTh-228 2.OOE+00 3.50E+01 1.30E+02 FH 3 L9342-01 6/1/2005 Ag-108m -5.30E+00 7.1OE+00 2.70E+01 FH 3 L9342-01 6/1/2005 Ag-110m -1.OOE+01 1.30E+01 5.30E+01 Li FH 3 L9342-01 6/1/2005 Ba-140 1.50E+01 2.10E+01 8.10E+01 FH FH FH 3

3 3

L9342-01 L9342-01 L9342-01 6/1/2005 6/1/2005 6/1/2005 Be-7 Ce-141 Ce-144

-1.30E+01 3.OOE+00

-3.30E+01 7.70E+01 1.40E+01 4.10E+01 2.90E+02 4.80E+01 1.50E+02 U

FH FH FH 3

3 3

L9342-01 L9342-01 L9342-01 6/1/2005 6/1/2005 6/1/2005 Co-57 Co-58 Co-60

-3.30E+00 1.64E+01 O.OOE+00 5.50E+00 9.90E+00 1.10E+01 2.OOE+01 3.20E+01 4.40E+01 Li FH 3 L9342-01 6/1/2005 Cr-51 5.OOE+01 1.00E+02 3.50E+02 FH 3 L9342-01 6/1/2005 Cs-134 -6.50E+00 8.20E+00 3.40E+01 FH 3 L9342-01 6/1/2005 Cs-137 -4.OOE+00 9.60E+00 3.70E+01 FH 3 L9342-01 6/1/2005 Fe-59 3.10E+01 3.70E+01 1.30E+02 FH FH 3

3 3

L9342-01 L9342-01 L9342-01 6/1/2005 6/1/2005 6/1/2005 1-131 K-40 La-140 0.OOE+00 3.08E+03 1.70E+01 3.70E+01 3.OOE+02 2.40E+01 1.40E+02 4.10E+02 9.30E+01

L FH FH 3 L9342-01 6/1/2005 Mn-54 -1.10E+00 7.30E+00 2.90E+01 FH 3 L9342-01 6/1/2005 Nb-95 -1.90E+01 1.20E+01 5.10E+01 FH 3 L9342-01 6/1/2005 Ru-103 2.50E+01 1.OOE+01 3.10E+01 FH 3 L9342-01 6/1/2005 Ru-106 -3.40E+01 8.20E+01 3.20E+02 FH 3 L9342-01 6/1/2005 Sb-124 -2.40E+01 2.10E+01 1.00E+02 FH 3 L9342-01 6/1/2005 Sb-125 O.OOE+00 2.20E+01 8.10E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement U

-127-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC L SAMPLE TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH L9342-01 6/1/2005 Se-75 6.80E+00 9.0OE+OO 3.1OE+01 L FH FH L9342-01 L9342-01 6/11/2005 6/1/2005 Zn-65 Zr-95

-1.40E+01

-1.50E+01 1.90E+01 1.30E+01 7.90E+01 5.90E+01 FH L9774-01 8/22/2005 AcTh-228 -5.50E+01 4.30E+01 1.90E+02 L FH FH FH L9774-01 8/22/2005 L9774-01 8/22/2005 L9774-01 8/22/2005 Ag-108m Ag-1IOm Ba-140

-1.19E+01

-8.OOE+00 7.8OE+01 9.20E+00 1.80E+01 4.80E+01 3.90E+01 7.20E+01 1.40E+02 1.30E+02 5.IOE+02 L FH FH FH L9774-01 8/22/2005 L9774-01 8/22/2005 L9774-01 8/22/2005 Be-7 Ce-141 Ce-144

-7.OOE+01

-8.0OE+00

-3.80E+01 2.40E+01 6.OOE+01 8.70E+01 2.20E+02 L9774-01 8/22/2005 Co-57 1.50E+00 7.70E+00 2.80E+O, U

FH FH L9774-01 8/22/2005 Co-58 -2.90E+01 1.30E+01 6.40E+0'l FH L9774-01 8/22/2005 Co-60 -3.OOE+00 1.40E+01 5.70E+01 FH L9774-01 8/22/2005 Cr-51 -1.30E+02 1.90E+02 7.20E+O,'

L FH FH L9774-01 8/22/2005 L9774-01 8/22/2005 Cs-1 34 Cs-1 37 Fe-59

-9.60E+00

-4.50E+01

-3.90E+01 8.90E+00 1.50E+01 5.IOE+01 4.30E+OI 6.90E+OI 2.20E+O;'

FH L9774-01 8/2212005 L FH FH FH L9774-01 8/22/2005 L9774-01 8/22/2005 L9774-01 8/22/2005 1-131 K-40 La-140

-2.OOE+01 2.84E+03 9.OOE+01 1.1OE+02 3.60E+02 5.50E+01 4.20E+O:'

5.80E+O:'

1.70E+O:'

FH L9774-01 8/22/2005 Mn-54 8.50E+00 9.40E+00 3.40E+OI FH L9774-01 8/22/2005 Nb-95 O.OOE+OO 1.60E+01 6.40E+OI FH L9774-01 8/22/2005 Ru-1 03 3.OOE+00 1.90E+01 7.OOE+OI FH L9774-01 8/22/2005 Ru-1 06 -I.OOE+01 I.O0E+02 4.00E+02 FH L9774-01 8/22/2005 Sb-124 -2.70E+01 4.20E+01 1.90E+0:2 FH L9774-01 8/22/2005 Sb-125 -4.90E+01 3.20E+01 1.30E+0:2 FH L9774-01 8/22/2005 Se-75 -2.80E+01 1.40E+01 5.80E+O I FH L9774-01 8/22/2005 Zn-65 -1.40E+01 3.IOE+01 1.30E+02 FH L9774-01 8/22/2005 Zr-95 5.90E+01 2.60E+01 7.40E+O I FH 3 LI 0208-0111/21/2005 AcTh-228 -2.50E+01 4.30E+01 1.70E+0:2 FH 3 L10208-0111/21/2005 Ag-108m O.OOE+OO 8.80E+O0 3.20E+O I FH 3 LI 0208-0111/21/2005 Ag-I1Om 1.70E+01 1.50E+01 5.1 OE+O I FH 3 LI 0208-0111/21/2005 Ba-140 1.90E+01 2.20E+01 8.20E+O I FH 3 L10208-0111/21/2005 Be-7 -1.OOE+02 1.00E+02 4.OOE+02 FH 3 LI 0208-0111/21/2005 Ce-141 -2.80E+01 2.OOE+01 7.60E+O I FH 3 L10208-0111/21/2005 Ce-144 -1 .30E+01 6.20E+01 2.20E+0:2 FH 3 L10208-0111/21/2005 Co-57 -5.70E+00 8.20E+00 3.OOE+O I FH 3 L10208-0111/21/2005 Co-58 -4.OOE+OO 1.20E+01 4.70E+01 FH 3 LI 0208-0111/21/2005 Co-60 5.OOE+00 1.IOE+01 3.90E+01 FH 3 LI 0208-0111/21/2005 Cr-51 -6.OOE+01 1.20E+02 4.50E+02 FH 3 L10208-0111/21/2005 Cs-134 -1.30E+01 1.20E+01 4.80E+01 FH 3 LI 0208-0111/21/2005 Cs-137 -1.80E+01 I.IOE+01 4.50E+01 FH 3 LI 0208-0111/21/2005 Fe-59 -2.60E+01 3.OOE+01 1.20E+02 FH 3 LI 0208-0111/21/2005 1-131 O.OOE+00 3.60E+01 1.30E+02 FH 3 L10208-0111/21/2005 K-40 3.76E+03 3.50E+02 5.60E+02 FH 3 Li 0208-0111/21/2005 La-140 2.20E+01 2.60E+01 9.40E+01 FH 3 Li 0208-0111/21/2005 Mn-54 -2.OOE+OO 1.1OE+01 4.10E+01 FH 3 LI 0208-0111/21/2005 Nb-95 -1.OOE+00 1.60E+01 5.90E+01 FH 3 Li 0208-0111/21/2005 Ru-1 03 3.50E+01 1.20E+01 3.30E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-128-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 j SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH 3 LI 0208-0111/21t2005 Ru-1 06 -6.OOE+01 1.OOE+02 3.90E+02 FH 3 LI 0208-0111/21/2005 Sb-124 -8.00E+00 1.70E+01 8.30E+01 FH 3 L10208-0111/21/2005 Sb-125 2.80E+01 3.1OE+01 1.1OE+02 FH 3 L10208-0111/21/2005 Se-75 3.OOE+00 1.60E+01 5.50E+01 FH 3 L10208-0111/21/2005 Zn-65 3.80E+01 5.20E+01 1.80E+02 FH 3 L10208-0111/21/2005 Zr-95 -2.60E+01 2.20E+01 9.OOE+01 FH 53 L8896-01 2/24/2005 AcTh-228 -4.50E+01 4.30E+01 1.90E+02 FH 53 L8896-01 2/24/2005 Ag-108m -3.90E+00 8.40E+00 3.40E+01 I "

FH 53 L8896-01 2/24/2005 Ag-110m 1.70E+01 1.70E+01 6.OOE+01 FH 53 L8896-01 2/24/2005 Ba-140 O.OOE+00 2.1OE+01 9.30E+01 FH 53 L8896-01 2/24/2005 Be-7 O.OOE+00 9.70E+01 3.80E+02 FH 53 L8896-01 2/24/2005 Ce-141 -1.80E+01 2.10E+01 8.1OE+01 FH 53 L8896-01 2/24/2005 Ce-144 3.70E+01 6.80E+01 2.40E+02 FH 53 L8896-01 2/24/2005 Co-57 -1.67E+01 7.80E+00 3.20E+01

,-I1 FH 53 L8896-01 2/24/2005 Co-58 -1.60E+01 1.30E+01 5.80E+01 FH 53 L8896-01 2/24/2005 Co-60 -4.OOE+00 1.30E+01 5.70E+01 FH 53 L8896-01 2/24/2005 Cr-51 1.80E+02 1.OOE+02 3.20E+02 FH FH 53 53 L8896-01 2/24/2005 Cs-1 34 L8896-01 2/24/2005 Cs-137 O.OOE+00

-4.OOE+00 1.20E+01 1.20E+01 4.90E+01 4.90E+01 3

FH 53 L8896-01 2/24/2005 Fe-59 -2.70E+01 3.1OE+01 1.50E+02 FH 53 L8896-01 2124/2005 1-131 -1.20E+01 3.20E+01 1.20E+02 FH 53 L8896-01 2/24/2005 K-40 1.24E+03 3.20E+02 8.60E+02 FH 53 L8896-01 2/24/2005 La-140 O.OOE+00 2.40E+01 1.1OE+02 FH 53 L8896-01 2/24/2005 Mn-54 3.OOE+00 1.40E+01 5.1OE+01 FH FH 53 53 L8896-01 2/24/2005 Nb-95 L8896-01 2/24/2005 Ru-1 03

-1.90E+01 1.30E+01 1.20E+02 1.60E+01 1.30E+01 1.20E+02 7.OOE+01 4.60E+01 4.20E+02

£2 FH 53 L8896-01 2/24/2005 Ru-1 06 FH FH FH 53 53 53 L8896-01 2/24/2005 Sb-124 L8896-01 2/24/2005 Sb-125 L8896-01 2/24/2005 Se-75 O.OOE+00

-1.20E+01

-1.80E+01 2.80E+01 2.80E+01 1.50E+01 1.20E+02 1.1OE+02 6.OOE+01 12

-1.43E+02 4.20E+01 1.90E+02 FH FH FH 53 53 53 L8896-01 2/24/2005 Zn-65 L8896-01 2/24/2005 Zr-95 L9342-02 6/1/2005 AcTh-228

-3.90E+01

-1.80E+01 2.30E+01 5.80E+01 1.OOE+02 2.40E+02 LU FH 53 L9342-02 6/1/2005 Ag-108m O.OOE+00 1.OOE+01 4.1OE+01 FH 53 L9342-02 6/1/2005 Ag-11Om 2.50E+01 2.50E+01 8.90E+01 FH 53 L9342-02 6/1/2005 Ba-140 -2.20E+01 4.90E+01 2.40E+02 FH 53 L9342-02 6/1/2005 Be-7 -3.OOE+01 1.30E+02 5.40E+02 FH 53 L9342-02 6/1/2005 Ce-141 -1.OOE+00 2.40E+01 8.80E+01 FH 53 L9342-02 6/1/2005 Ce-144 3.30E+01 7.20E+01 2.60E+02 FH 53 L9342-02 6/1/2005 Co-57 1.50E+00 6.80E+00 2.50E+01 FH 53 L9342-02 6/1/2005 Co-58 1.40E+01 1.80E+01 6.50E+01 FH 53 L9342-02 6/1/2005 Co-60 -8.OOE+00 1.20E+01 6.20E+01 FH 53 L9342-02 6/1/2005 Cr-51 3.20E+02 1.60E+02 5.OOE+02 FH 53 L9342-02 6/1/2005 Cs-1 34 -5.OOE+00 1.60E+01 6.90E+01 FH 53 L9342-02 6/1/2005 Cs-137 1.30E+01 1.40E+01 5.20E+01 FH 53 L9342-02 6/1/2005 Fe-59 1.11E+02 7.OOE+01 2.30E+02 FH 53 L9342-02 6/1/2005 1-131 -5.OOE+01 6.OOE+01 2.60E+02 FH 53 L9342-02 6/1/2005 K-40 2.44E+03 4.70E+02 1.OOE+03 FH 53 L9342-02 6/1/2005 La-140 -2.50E+01 5.70E+01 2.70E+02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-129-

b Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

FH 53 L9342-02 6/1/2005 Mn-54 -1.80E+01 1.OOE+01 5.60E+01 L FH FH 53 53 L9342-02 6/1/2005 L9342-02 6/1/2005 Nb-95 Ru-103 1.70E+01

-1.70E+01 1.90E+01 1.50E+01 6.90E+01 6.90E+01 FH 53 L9342-02 6/1/2005 Ru-1 06 -3.30E+02 1.40E+02 6.80E+02 L FH FH FH 53 53 53 L9342-02 6/112005 L9342-02 611/2005 L9342-02 6/1/2005 Sb-124 Sb-1 25 Se-75 4.OOE+01 2.40E+01

-6.OOE+00 2.90E+01 3.30E+01 1.50E+01 5.50E+01 1.20E+02 5.80E+01

-4.40E+01 3.1OE+01 1.60E+02 L FH FH FH 53 53 53 L9342-02 6/1/2005 L9342-02 6/1/2005 L9774-02 8/22/2005 Zn-65 Zr-95 AcTh-228

-1.40E+01

-6.0OE+00 1.60E+01 4.90E+01 8.70E+01 2.OOE+02 FH 53 L9774-02 8/22/2005 Ag-108m O.OOE+0O I.OOE+01 3.80E+01 L FH FH 53 53 L9774-02 8/22/2005 L9774-02 8/22/2005 Ag-11Om Ba-140

-2.40E+01 O.OOE+0O 1.50E+01 4.80E+01 7.40E+01 2.30E+02 FH 53 L9774-02 8/22/2005 Be-7 -3.OOE+01 1.20E+02 4.80E+02 L FH FH FH 53 53 53 L9774-02 8/22/2005 L9774-02 8/22/2005 L9774-02 8/22/2005 Ce-141 Ce-144 Co-57

-1.OOE+01

-1.OOE+OO 2.20E+00 2.50E+01 6.IOE+01 8.OOE+OO 9.30E+01 2.20E+O'2 2.90E+01 4.10E+01 U FH FH FH 53 53 53 L9774-02 8/22/2005 L9774-02 8/22/2005 L9774-02 8/22/2005 Co-58 Co-60 Cr-51 2.20E+01

-2.70E+01

-1.1 OE+02 1.30E+01 1.80E+01 1.60E+02 8.OOE+01 6.40E+02 FH 53 L9774-02 8/22/2005 Cs-134 -3.1 OE+01 1.50E+01 7.IOE+01 FH 53 L9774-02 8/22/2005 Cs-137 -2.10E+01 1.40E+01 6.20E+01 FH 53 L9774-02 8/22/2005 Fe-59 6.20E+01 4.90E+01 1.60E+02 FH 53 L9774-02 8/2212005 1-131 -2.OOE+01 1.20E+02 4.70E+02 FH 53 L9774-02 8/22/2005 K-40 3.27E+03 4.50E+02 8.70E+02

FH 53 L9774-02 8/22/2005 La-140 O.OOE+OO 5.60E+01 2.60E+02 FH 53 L9774-02 8/22/2005 Mn-54 6.OOE+OO 1.20E+01 4.60E+01 FH 53 L9774-02 8/22/2005 Nb-95 -1.30E+01 2.1OE+01 8.90E+01 FH 53 L9774-02 8/22/2005 Ru-103 O.OOE+OO 1.70E+01 6.70E+01 FH 53 L9774-02 8/2212005 Ru-106 -8.00E+01 1.40E+02 5.40E+O,'

FH 53 L9774-02 8/22/2005 Sb-124 -3.30E+01 4.70E+01 2.20E+02 FH 53 L9774-02 8/22/2005 Sb-125 1.80E+01 2.80E+01 1.OOE+02 FH 53 L9774-02 8/22/2005 Se-75 -1.80E+01 1.20E+01 5.20E+01 FH 53 L9774-02 8/22/2005 Zn-65 2.60E+01 2.90E+01 1.OOE+02 FH 53 L9774-02 8/22/2005 Zr-95 -1.80E+01 2.90E+01 1.20E+02 FH 53 LI 0208-0211/21/2005 AcTh-228 7.30E+01 3.90E+01 1.30E+02 FH 53 LI 0208-0211/21/2005 Ag-108m 4.00E+0O 1.20E+01 4.1 OE+O0I FH 53 L10208-0211/21/2005 Ag-1I1m 1.30E+01 1.40E+01 4.90E+OI FH 53 L10208-0211/21/2005 Ba-140 1.50E+01 2.20E+01 8.30E+O0I FH 53 LI 0208-0211/21/2005 Be-7 1.90E+02 1.IOE+02 3.60E+O:!

FH 53 L10208-0211/21/2005 Ce-141 -9.OOE+OO 2.20E+01 7.90E+OI FH 53 L10208-0211/21/2005 Ce-144 4.40E+01 7.OOE+01 2.40E+O:'

FH 53 L10208-0211/21/2005 Co-57 -7.OOE-01 8.40E+00 3.OOE+O0I FH 53 L10208-0211/21/2005 Co-58 O.OOE+0O 1.40E+01 5.1OE+O I FH 53 L10208-0211/21/2005 Co-60 -8.00E+0O 1.20E+01 4.70E+O'l FH 53 LI 0208-0211/21/2005 Cr-51 -1.80E+02 1.40E+02 5.30E+O;'

FH 53 L10208-0211/21/2005 Cs-134 1.OOE+01 1.20E+01 4.40E+OI FH 53 LI 0208-0211/21/2005 Cs-137 -5.OOE+OO 1.50E+01 5.5OE+O0I FH 53 L10208-0211/21/2005 Fe-59 -8.OOE+00 2.70E+01 1.OOE+O2

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-130-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCikg) (pCi/kg)

FH 53 L10208-0211/21/2005 1-131 -3.90E+01 4.30E+01 1.60E+02 FH 53 L10208-0211/21/2005 K-40 3.85E+03 3.50E+02 5.70E+02 FH 53 LI 0208-0211/21/2005 La-140 1.70E+01 2.60E+01 9.60E+01 FH 53 LI 0208-0211/21/2005 Mn-54 -3.30E+01 1.30E+01 5.40E+01 FH 53 Li 0208-0211/21/2005 Nb-95 -4.OOE+00 2.30E+01 8.40E+01 FH 53 Li 0208-0211/21/2005 Ru-103 -I1.40E+01 1.20E+01 4.90E+01 L FH 53 L10208-0211/21/2005 Ru-106 3.OOE+01 1.OOE+02 3.70E+02 FH 53 LI 0208-0211/21/2005 Sb-124 -6.OOE+00 3.1 OE+01 I1.20E+02 FH 53 L10208-0211/2112005 Sb-1 25 8.10E+01 3.60E+01 1.10E402 I

FH 53 L10208-0211/21/2005 Se-75 0.OOE+00 1.60E+01 5.70E+01 FH 53 L10208-0211/21/2005 Zn-65 4.90E+01 5.60E+01 1.90E+02 FH 53 LI 0208-0211/21/2005 Zr-95 1.10E+01 2.20E+01 7.70E+01 *_I j I

'2 1L2 L

L

!I

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-131-Li

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

HA 4 L9377-01 6/2/2005 AcTh-228 -1.31E+02 4.90E+01 2.50E+O2 HA 4 L9377-01 6/2/2005 Ag-108m -4.0OE+00 1.OOE+01 4.10E+OI HA 4 L9377-01 6/2/2005 Ag-110m -1.1OE+01 1.90E+01 8.30E+OI HA 4 L9377-01 6/2/2005 Ba-140 3.50E+01 9.30E+01 3.80E+02 HA 4 L9377-01 6/2/2005 Be-7 -1.00E+02 1.50E+02 6.20E+0:7 HA 4 L9377-01 6/2/2005 Ce-141 5.OOE+00 2.40E+01 8.90E+OI HA 4 L9377-01 6/2/2005 Ce-144 9.70E+01 6.IOE+01 2.OOE+02 HA 4 L9377-01 6/2/2005 Co-57 2.40E+00 7.60E+00 2.80E+OI L HA 4 L9377-01 6/2/2005 Co-58 1.60E+01

-1.30E+01 1.40E+01 1.40E+01 4.70E+Ol 6.80E+OI HA 4 L9377-01 6/2/2005 Co-60 HA 4 L9377-01 6/2/2005 Cr-51 1.40E+02 2.30E+02 8.1OE+02 L HA HA 4

4 L9377-01 L9377-01 6/2/2005 6/2/2005 Cs-134 Cs-137

-1.90E+01

-3.OOE+00 1.50E+01 1.30E+01 6.70E+OI 5.20E+OI HA 4 L9377-01 6/2/2005 Fe-59 -7.OOE+00 5.20E+01 2.30E+02 L HA 4 L9377-01 6/2/2005 1-131 K-40

-4.20E+02 1.51 E+03 1.80E+02 3.30E+02 8.40E+02 6.90E+02 HA 4 L9377-01 6/2/2005 HA 4 L9377-01 6/212005 La-140 4.OOE+01 1.IOE+02 4.30E+02 HA 4 L9377-01 6/2/2005 Mn-54 3.O0E+00 1.30E+01 5.20E+O I HA 4 L9377-01 6/2/2005 Nb-95 -1.00E+01 2.50E+01 1.0OE+02 HA 4 L9377-01 6/2/2005 Ru-103 O.OOE+OO 2.30E+01 8.80E+01 HA 4 L9377-01 6/2/2005 Ru-106 O.OOE+OO 1.20E+02 4.80E+02 HA 4 L9377-01 6/2/2005 Sb-124 1.90E+01 5.20E+01 2.IOE+02 HA 4 L9377-01 6/212005 Sb-125 -2.OOE+01 3.10E+01 1.30E+02 HA 4 L9377-01 6/2/2005 Se-75 -2.60E+01 1.40E+01 6.OOE+01 HA 4 L9377-01 6/2/2005 Zn-65 O.OOE+OO 2.70E+01 1.20E+02 HA 4 L9377-01 6/2/2005 Zr-95 -3.90E+01 2.80E+01 1.30E+02 HA 4 L10256-01 12/1/2005 AcTh-228 -4.20E+01 3.80E+01 1.60E+02

¶ HA 4 L10256-01 12/1/2005 Ag-108m -1.23E+01 7.40E+00 3.10E+01 L HA 4 L10256-01 12/1/2005 Ag-110m 1.20E+01 1.60E+01 5.70E+01 HA 4 L10256-01 12/1/2005 Ba-140 7.OOE+00 1.50E+01 6.10E+01 U HA HA HA 4

4 4

L10256-01 12/1/2005 Be-7 L10256-01 12/1/2005 Ce-141 L10256-01 1211/2005 Ce-144 1.19E+02

-9.OOE+00 2.80E+01 8.90E+01 1.10E+01 4.IOE+01 3.OOE+02 4.30E+01 1.40E+02 HA 4 L10256-01 12/1/2005 Co-57 2.90E+00 5.1OE+00 1.80E+01 HA 4 L10256-01 12/1/2005 Co-58 1.53E+01 9.80E+00 3.20E+01 HA 4 L10256-01 12/1/2005 Co-60 -9.OOE+00 1.20E+01 5.0OE+01 HA 4 L10256-01 12/1/2005 Cr-51 7.40E+01 9.OOE+01 3.10E+02 HA 4 L10256-01 12/1/2005 Cs-134 -7.90E+00 9.50E+00 4.10E+01 HA 4 L10256-01 12/1/2005 Cs-137 -2.OOE+00 1.OOE+0I 4.OOE+01 HA 4 L10256-01 12/1/2005 Fe-59 3.60E+01 2.40E+01 7.80E+01 HA 4 L10256-01 12/1/2005 1-131 1.30E+01 2.10E+01 7.50E+01 HA 4 L10256-01 12/1/2005 K-40 2.51E+03 3.40E+02 6.70E+02 HA 4 L10256-01 12/1/2005 La-140 8.OOE+00 1.70E+01 7.OOE+01 HA 4 L10256-01 12/1/2005 Mn-54 -1.30E+01 1.OOE+01 4.40E+01 HA 4 L10256-01 12/1/2005 Nb-95 -6.O0E+00 1.50E+01 5.90E+01 HA 4 L10256-01 12/1/2005 Ru-103 -4.O0E+00 1.0OE+01 4.OOE+01 HA 4 L10256-01 12/1/2005 Ru-106 -1.06E+02 8.70E+01 3.70E+02 HA 4 LI0256-01 12/1/2005 Sb-124 1.90E+01 1.90E+01 7.10E+01 HA 4 L10256-01 12/1/2005 Sb-125 -2.IOE+01 2.90E+01 1.1OE+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-132-

Program Data - 2005 Seabrook Station Radiological Environmental Monitoring Li I

SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kq) (pCi/kg) (pCi/kg)

HA 4 LI 0256-01 1211/2005 Se-75 -2.1 OE+00 9.60E+00 3.60E+01 HA 4 LI 0256-01 12/1/2005 Zn-65 -2.30E+01 2.60E+01 I.IOE+02 HA 4 L10256-01 12/1/2005 Zr-95 -3.50E+01 2.20E+01 9.50E+01 HA 54 L9353-01 5/30/2005 AcTh-228 2.50E+01 4.80E+01 1.80E+02 HA 54 L9353-01 5/30/2005 Ag-108m 3.OOE+00 1.20E+01 4.60E+01 4-6 HA 54 L9353-01 5/30/2005 Ag-110m -1.20E+01 2.50E+01 1.OOE+02 HA 54 L9353-01 5/30/2005 Ba-140 -1.80E+02 1.20E+02 6.20E+02 HA 54 L9353-01 5/30/2005 Be-7 O.OOE+00 1.80E+02 7.OOE+02 HA 54 L9353-01 5/30/2005 Ce-141 -4.OOE+00 3.40E+01 1.30E+02 HA 54 L9353-01 5/30/2005 Ce-144 2.90E+01 7.30E+01 2.60E+02 HA 54 L9353-01 5/30/2005 Co-57 -9.OOE+00 1.OOE+01 4.OOE+01 HA 54 L9353-01 5/30/2005 Co-58 I.OOE+01 1.90E+01 7.1 OE+01 HA 54 L9353-01 5/30/2005 Co-60 -2.OOE+OO 1.50E+01 6.60E+01 HA 54 L9353-01 5/30/2005 Cr-51 6.OOE+01 2.80E+02 I.OOE+03 HA 54 L9353-01 5/30/2005 Cs-1 34 7.OOE+OO 1.40E+01 5.50E+01 HA 54 L9353-01 5/30/2005 Cs-137 2.IOE+01 1.40E+01 4.50E+01 HA 54 L9353-01 5/30/2005 Fe-59 8.50E+01 6.60E+01 2.20E+02 HA 54 L9353-01 5/30/2005 1-131 1.80E+02 2.70E+02 9.90E+02 HA 54 L9353-01 5/30/2005 K-40 2.17E+03 4.OOE+02 7.5OE+02 HA 54 L9353-01 5/30/2005 La-140 -2.00E+02 1.40E+02 7.1 OE+02 I11 HA 54 L9353-01 5/30/2005 Mn-54 -8.OOE+00 1.50E+01 6.30E+01 HA HA HA 54 54 54 L9353-01 5/30/2005 L9353-01 5/30/2005 L9353-01 5/30/2005 Nb-95 Ru-103 Ru-106 6.00E+OO

-6.OOE+OO 7.OOE+01 2.40E+01 2.30E+01 1.30E+02 9.80E+01 9.20E+01 4.80E+02 V.

Sb-124 6.1 OE+01 2.30E+02 HA HA HA 54 54 54 L9353-01 5/30/2005 L9353-01 5/30/2005 L9353-01 5/30/2005 Sb-125 Se-75 4.30E+01 1.60E+01

-2.90E+01 3.70E+01 1.90E+01 1.40E+02 8.OOE+01 LI HA 54 L9353-01 5/30/2005 Zn-65 -9.70E+01 3.60E+01 1.90E+02 HA HA 54 54 L9353-01 5/30/2005 LI 0256-0211/28/2005 Zr-95 AcTh-228

-4.50E+01

-3.70E+01 3.50E+01 5.OOE+01 1.60E+02 2.OOE+02 L HA 54 LI 0256-0211/28/2005 Ag-108m 6.OOE+00 1.OOE+01 3.70E+01 HA HA HA 54 54 54 LI 0256-0211/28/2005 L10256-0211/28/2005 LI 0256-0211/28/2005 Ag-1I1m Ba-140 Be-7

-7.OOE+OO

-1.60E+01

-1.60E+02 1.70E+01 2.00E+01 1.20E+02 6.80E+01 9.60E+01 4.60E+02 L

HA HA HA 54 54 54 LI 0256-0211/28/2005 LI 0256-0211/28/2005 LI 0256-0211/28/2005 Ce-141 Ce-144 Co-57

-1.1 OE+01 6.20E+01 I.70E+OO 1.50E+01 5.60E+01 6.80E+00 5.50E+01 1.9OE+02 2.40E+01 LI HA 54 L10256-0211/28/2005 Co-58 -7.OOE+OO 1.30E+01 5.20E+01 HA 54 L10256-0211/28/2005 Co-60 -2.60E+01 1.50E+01 6.70E+01 L10256-0211/28/2005 Cr-51 7.00E+01 1.30E+02 4.50E+02 E

HA 54 HA 54 L10256-0211/28/2005 Cs-134 1.40E+01 1.30E+01 4.40E+01 HA 54 LI 0256-0211/28/2005 Cs-137 1.60E+01 I.OOE+01 3.40E+01 HA 54 LI 0256-0211/28/2005 Fe-59 -6.00E+OO 3.OOE+01 1.20E+02 ; vI

-1 HA 54 LI 0256-0211/28/2005 1-131 -3.30E+01 3.50E+01 1.40E+02 I HA 54 L10256-0211/28/2005 K-40 2.20E+03 3.1 OE+02 5.20E+02 HA 54 LI 0256-0211/28/2005 La-140 -1.80E+01 2.30E+01 1.1 OE+02 HA HA HA 54 54 54 LI 0256-0211/28/2005 LI 0256-0211/28/2005 Li 0256-0211/28/2005 Mn-54 Nb-95 Ru-103 1.40E+01 8.OOE+00

-6.OOE+OO 1.30E+01 1.60E+01 1.40E+01 4.40E+01 5.70E+01 5.20E+01 L

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-133-

Seabrook Station Radiological Environmental MonitoringProgram Data - 2005 SAMF'LE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCikg) (pCi/kg) (pCi/kg)

HA 54 L10256-0211/28/2005 Ru-106 6.OOE+01 1.10E+02 3.90E+02 HA 54 LI 0256-0211/28/2005 Sb-1 24 2.10E+01 2.90E+01 1.10E+02 HA 54 L10256-0211/28/2005 Sb-1 25 -4.OOE+01 3.1 0E+01 1.20E+02 HA 54 L10256-0211/28/2005 Se-75 1.80E+01 1.20E+01 3.80E+Oi HA 54 LI 0256-0211/28/2005 Zn-65 -9.20E+01 3.50E+01 1.60E+02 HA 54 L10256-0211/28/2005 Zr-95 -1.10E+01 1.90E+01 8.00E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-134-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kag) (pCi/kg) (pCi/kg) j MS MS 6

56 L10207-0411/21/2005 Sr-90 L10207-0511/21/2005 Sr-90 0.OOE+00

-2.19E+02 8.OOE+01 7.90E+01 2.60E+02 2.60E+02 j

I C-4 U

LI F]

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation) 'i )

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-135-L

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

MU L9346-01 6/1/2005 AcTh-228 1.60E+01 3.40E+01 1.20E+O,!

L MU MU L9346-01 6/1/2005 L9346-01 6/1/2005 Ag-108m Ag-1I Om 2.80E+00

-3.40E+00 6.1OE+00 9.70E+00 2.20E+Ol 3.90E+OI MU L9346-01 6/1/2005 Ba-140 -2.50E+01 1.50E+01 7.60E+OI L MU MU L9346-01 6/1/2005 L9346-01 L9346-01 6/1/2005 6/112005 Be-7 Ce-141 Ce-1 44

-6.30E+01 1.20E+01

-1.OOE+00 6.30E+01 I.IOE+01 2.80E+01 2.50E+02 3.60E+Ol 1.00E+O2 MU MU L9346-01 6/1/2005 Co-57 7.40E+00 3.70E+00 1.20E+0OI

¶ MU L9346-01 6/11/2005 Co-58 4.50E+00 8.OOE+00 2.90E+OI

-5.0OE+00 1.OOE+01 4.20E+OI L MU MU L9346-01 L9346-01 6/1/2005 6/1/2005 Co-60 Cr-51 3.50E+01 6.30E+01 2.20E+O:'

MU L9346-01 6/112005 Cs-134 -5.OOE+00 1.1OE+01 4.00E+OI L MU MU MU L9346-01 L9346-01 L9346-01 6/112005 611/2005 61112005 Cs-137 Fe-59 1-131

-1.40E+00

-6.OOE+00 2.0OE+00 8.0OE+OO 2.70E+01 1.70E+01 3.10E+OI 1.1 OE+O2 6.1OE+OI MU L9346-01 611/2005 K-40 1.23E+03 2.1OE+02 4.50E+02 MU L9346-01 6/11/2005 La-140 -2.90E+01 1.70E+01 8.70E+Ol

[ MU MU MU L9346-01 6/11/2005 L9346-01 L9346-01 6/1/2005 6/1/2005 Mn-54 Nb-95 Ru-103

-5.20E+00

-1.20E+00

-4.OOE+00 8.80E+00 9.OOE+OO 8.60E+00 3.50E+OI 3.50E+OI 3.30E+OI MU L9346-01 6/1/2005 Ru-106 7.30E+01 6.40E+01 2.20E+02

, MU MU L9346-01 611/2005 L9346-01 611/2005 Sb-124 Sb-1 25 3.40E+01 3.70E+01 2.20E+01 2.OOE+01 7.30E+OI 6.30E+Ol MU L9346-01 6/1/2005 Se-75 -5.OOE-01 7.60E+00 2.80E+O I MU L9346-01 6/1/2005 Zn-65 -1.60E+01 2.OOE+01 8.1 OE+O I MU L9346-01 6/11/2005 Zr-95 -1.OOE+01 1.30E+01 5.30E+O I MU Li 0207-0111/21/2005 AcTh-228 6.30E+01 4.50E+01 1.50E+0:2 MU Li 0207-0111/21/2005 Ag-108m 1.20E+01 1.OOE+01 3.40E+O I MU LI 0207-0111/21/2005 Ag-110m -3.OOE+00 1.50E+01 6.IOE+0 I MU Li 0207-0111/21/2005 Ba-140 3.20E+01 2.80E+01 9.60E+0 I MU LI 0207-0111/21/2005 Be-7 3.OOE+01 1.OOE+02 3.80E+02 MU L10207-0111121/2005 Ce-141 -6.0OE+OO 1.90E+01 6.90E+O I MU Li 0207-0111/21/2005 Ce-144 4.00E+01 5.70E+01 2.OOE+0:2 MU Li 0207-0111/21/2005 Co-57 1.50E+00 7.1OE+OO 2.50E+OI MU Li 0207-0111/21/2005 Co-58 -1.90E+01 1.1OE+01 5.00E+O I MU Li 0207-0111/21/2005 Co-60 7.OOE+00 1.30E+01 4.70E+O I MU LI 0207-0111/21/2005 Cr-51 1.30E+02 1.30E+02 4.50E+02 MU Li 0207-0111/21/2005 Cs-1 34 -8.0OE+OO 1.20E+01 5.OOE+01 MU L10207-0111/21/2005 Cs-137 -1.70E+01 1.20E+01 5.OOE+01 MU L10207-011112112005 Fe-59 1.90E+01 3.OOE+01 1.1OE+02 MU Li 0207-0111/21/2005 1-131 -6.40E+01 4.20E+01 1.60E+02 MU Li 0207-0111/2112005 K-40 9.20E+02 2.60E+02 7.IOE+02 MU Li 0207-0111/21/2005 La-140 3.70E+01 3.20E+01 1.10E+02 MU LI 0207-0111/21/2005 Mn-54 1.40E+01 1.20E+01 4.20E+01 MU LI 0207-0111/2112005 Nb-95 O.OOE+OO 1.40E+01 5.50E+01 MU Li 0207-0111/21/2005 Ru-103 4.OOE+00 1.40E+01 5.00E+01 MU Li 0207-0111/21/2005 Ru-106 -1.1 OE+02 1.10E+02 4.50E+0,2 MU Li0207-0111/21/2005 Sb-124 -2.OOE+01 2.40E+01 1.20E+02 MU Li 0207-0111/21/2005 Sb-125 4.20E+01 3.30E+01 1.10E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-136-

SoS Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC , .

TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

MU 6 L10207-0111/21/2005 Se-75 -1.OOE+01 1.60E+01 5.90E+01 MU 6 Li 0207-0111/21/2005 Zn-65 6.OOE+01 5.60E+01 1.90E+02 MU 6 LI 0207-0111/21/2005 Zr-95 -1.OOE+00 2.20E+01 8.40E+01 MU L9343-01 5/25/2005 AcTh-228 -3.30E+01 4.80E+01 2.1OE+02 MU L9343-01 5/25/2005 Ag-108m 2.20E+01 1.OOE+01 3.1 OE+01 MU L9343-01 5/25/2005 Ag-110m -4.20E+01 2.OOE+01 9.90E+01 MU L9343-01 5/25/2005 Ba-140 -2.60E+01 5.70E+01 2.80E+02 MU L9343-01 5/25/2005 Be-7 2.80E+02 1.50E+02 4.80E+02 L I MU L9343-01 5/25/2005 Ce-141 2.20E+01 2.50E+01 8.60E+01 MU L9343-01 5/25/2005 Ce-144 O.OOE+00 5.70E+01 2.1OE+02 MU L9343-01 5/25/2005 Co-57 -3.1 OE+00 8.OOE+00 3.00E+01 MU L9343-01 5/25/2005 Co-58 -1.90E+01 1.60E+01 7.40E+01 MU L9343-01 5/25/2005 Co-60 -2.OOE+01 1.40E+01 7.50E+01 MU L9343-01 5/25/2005 Cr-51 O.OOE+00 1.70E+02 6.40E+02 MU L9343-01 5/25/2005 Cs-134 -5.OOE+00 1.40E+01 6.1 0E+01 MU L9343-01 5/25/2005 Cs-137 -1.50E+01 1.30E+01 6.1OE+01 MU L9343-01 5/25/2005 Fe-59 -2.70E+01 4.70E+01 2.30E+02 I I MU L9343-01 5/25/2005 1-131 4.40E+01 9.90E+01 3.70E+02 1.43E+03 3.20E+02 6.30E+02 * !-

MU L9343-01 5/25/2005 K-40 MU L9343-01 5/25/2005 La-140 -3.OOE+01 6.60E+01 3.20E+02 MU L9343-01 5/25/2005 Mn-54 -5.OOE+00 1.30E+01 5.60E+01 MU L9343-01 5/25/2005 L9343-01 5/25/2005 Nb-95 Ru-103

-1.90E+01 O.OOE+00 2.50E+01 1.40E+01 1.1OE+02 5.70E+01 L

MU MU L9343-01 5/25/2005 Ru-106 -1.10E+02 1.30E+02 5.50E+02 MU L9343-01 5/25/2005 Sb-I124 7.90E+01 4.80E+01 1.40E+02 MU L9343-01 5/25/2005 Sb-125 1.50E+01 3.OOE+01 1.10E+02 MU L9343-01 5/25/2005 Se-75 -4.60E+01 1.60E+01 7.20E+01 MU MU 1-9343-0`1 5/25/2005 L9343-01 5/25/2005 LI 0206-0111/21/2005 Zn-65 Zr-95 AcTh-228

-3.10E+01

-3.40E+01

-3.20E+01 3.80E+01 2.50E+01 3.60E+01 1.70E+02 1.20E+02 1.50E+02 U

MU MU MU MU LI 0206-0111/21/2005 LI 0206-0111/21/2005 LI 0206-0111/21/2005 Ag-108m Ag-110m Ba-140 7.60E+00

-3.OOE+00 6.OOE+00 7.60E+00 1.30E+01 2.OOE+01 2.60E+01 5.OOE+01 8.10E+01 L

LI 0206-0111/21/2005 Be-7 7.1OE+01 8.60E+01 3.00E+02 MU MU MU LI 0206-0111/21/2005 LI 0206-0111/21/2005 Ce-141 Ce-144

-4.90E+01 5.70E+01 1.70E+01 5.70E+01 6.90E+01 1.90E+02 L

MU L10206-0111/21/2005 Co-57 -1.01E+01 7.40E+00 2.80E+01 MU MU Li 0206-0111/21/2005 LI 0206-0111/21/2005 Co-58 Co-60

-1.50E+01 3.OOE+00 1.20E+01 1.OOE+01 1.1OE+02 4.80E+01 3.80E+01 4.1 OE+02 L

MU LI 0206-0111/21/2005 Cr-51 -3.OOE+01 MU LI 0206-0111/21/2005 Cs-1 34 O.OOE+00 1.30E+01 4.80E+01 UI MU LI 0206-0111/21/2005 Cs-137 8.20E+00 8.90E+00 3.10E+01 MU LI 0206-0111/21/2005 Fe-59 1.90E+01 2.50E+01 9.00E+01 MU L10206-0111/21/2005 1-131 O.OOE+00 3.20E+01 1.20E+02 MU LI 0206-0111/21/2005 K-40 7.80E+02 1.90E+02 5.1 OE+02 MU LI 0206-0111/21/2005 La-140 7.OOE+00 2.30E+01 9.30E+01 MU LI 0206-0111/21/2005 Mn-54 2.OOE+00 1.1OE+01 3.90E+01 MU LI 0206-0111/21/2005 Nb-95 -3.80E+01 1.30E+01 6.OOE+01 MU LI 0206-0111/21/2005 Ru-103 O.OOE+00 1.50E+01 5.30E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-137-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC

.Lr TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

ML' 9 LI 0206-0111/21/2005 Ru-106 2.OOE+01 1.OOE+02 3.80E+O0' LI 0206-0111/21/2005 Sb-124 -1.50E+01 2.40E+01 1.1OE+O0' L MLI MLI 9

9 Li 0206-0111/21/2005 Sb-125 4.30E+01 2.70E+01 8.90E+OI MLI 9 LI 0206-0111/21/2005 Se-75 -4.00E+OO 1.10E+01 4.20E+OI f I MLU 9 L10206-0111/21/2005 Zn-65 8.1OE+01 4.20E+01 1.40E+O:0 L MLI 9 L10206-0111/21/2005 Zr-95 7.00E+00 2.00E+01 7.30E+OI ML 56 L9346-02 6/11/2005 AcTh-228 -2.30E+01 3.00E+01 1.20E+0:2 MLI 56 L9346-02 611/2005 Ag-108m 5.60E+00 6.30E+00 2.20E+OI ML 56 L9346-02 6/1/2005 Ag-110m -1.80E+01 1.20E+01 5.00E+OI L

L ML MLI 56 56 L9346-02 6/1/2005 L9346-02 6/1/2005 L9346-02 6/1/2005 Ba-140 Be-7 Ce-141 2.50E+01 9.40E+01

-7.OOE+OO 1.80E+01 7.10E+01 1.20E+01 5.90E+0I 2.40E+0:2 4.20E+O I ML' 56 L MU MU MU 56 56 56 L9346-02 6/1/2005 L9346-02 6/1/2005 L9346-02 6/1/2005 Ce-144 Co-57 Co-58 1.70E+01

-6.80E+00 6.00E+OO 3.60E+01 4.802+00 8.30E+00 1.30E+0:2 1.80E+O I 3.00E+O I MLI 56 L9346-02 6/1/2005 Co-60 1.40E+01 1.10E+01 3.70E+OI MUL 56 L9346-02 6/1/2005 Cr-51 1.20E+02 7.80E+01 2.60E+02 MLU 56 L9346-02 6/1/2005 Cs-134 7.40E+00 8.00E+OO 2.80E+OI MLI 56 L9346-02 6/1/2005 Cs-137 5.002-01 7.20E+00 2.70E+OI MLI 56 L9346-02 6/1/2005 Fe-59 -7.00E+00 2.80E+01 1.10E+0.2 MLU 56 L9346-02 6/1/2005 1-131 3.40E+01 2.50E+01 8.40E+01 MLU 56 L9346-02 6/1/2005 K-40 1.30E+03 2.10E+02 4.70E+0.2 MLI 56 L9346-02 6/1/2005 La-140 2.80E+01 2.00E+01 6.80E+01 MU 56 L9346-02 6/1/2005 Mn-54 O.OOE+00 5.60E+00 2.20E+01 h MUl MUL 56 56 L9346-02 611/2005 L9346-02 611/2005 Nb-95 Ru-103 3.20E+00

-4.00E+00 9.20E+00 9.20E+OO 3.40E+01 3.50E+01 MUl 56 L9346-02 6/1/2005 Ru-106 -4.60E+01 7.50E+01 2.90E+02 MU 56 L9346-02 611/2005 Sb-I1 24 -3.30E+01 2.00E+01 9.90E+01 MLI 56 L9346-02 6/1/2005 Sb-125 3.40E+01 2.10E+01 7.00E+01 MLI 56 L9346-02 6/1/2005 Se-75 -6.70E+00 8.40E+00 3.20E+01 MLU 56 L9346-02 6/1/2005 Zn-65 -2.00E+01 2.002+01 8.20E+01 MLI 56 L9346-02 6/1/2005 Zr-95 3.OOE+00 1.50E+01 5.60E+01 MU 56 L10207-0211/21/2005 AcTh-228 2.70E+01 4.00E+01 1.40E+02 MIL 56 L1 0207-0211/21/2005 Ag-108m -3.00E+O0 9.40E+00 3.40E+01 MU 56 L1 0207-0211/21/2005 Ag-I1Om 1.60E+01 1.50E+01 5.20E+01 MLI 56 LI 0207-0211/21/2005 Ba-1 40 1.80E+01 2.70E+01 9.80E+01 MU 56 LI 0207-0211/21/2005 Be-7 -1.90E+02 1.10E+02 4.20E+02 MLI 56 LI 0207-0211/21/2005 Ce-141 -1.70E+01 1.60E+01 5.70E+01 MLI 56 Li 0207-0211/21/2005 Ce-144 4.60E+01 5.1OE+01 1.70E+02 MUL 56 LI 0207-0211/21/2005 Co-57 -5.20E+00 5.70E+00 2.1OE+01 MLU 56 L10207-0211/21/2005 Co-58 -3.20E+01 1.50E+01 6.00E+01 MU 56 L10207-0211/21/2005 Co-60 2.60E+01 1.30E+01 4.10E+01 MLI 56 LI 0207-0211/21/2005 Cr-51 2.00E+01 1.20E+02 4.00E+02 MLU 56 L10207-0211/21/2005 Cs-134 -1.10E+01 1.20E+01 4.70E+01 MLU 56 Li 0207-0211/21/2005 Cs-I 37 -2.OOE+01 1.10E+01 4.50E+01 MLI 56 LI 0207-0211/21/2005 Fe-59 -3.70E+01 2.80E+01 1.1OE+02 MLU 56 LI 0207-0211/21/2005 1-131 -2.OOE+01 3.10E+01 1.1OE+02 MLU 56 LI 0207-0211/21/2005 K-40 1.55E+03 2.50E+02 5.90E+02 MLl 56 LI 0207-0211/21/2005 La-140 2.00E+01 3.1OE+01 1.1OE+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-138-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 J SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCikg)

MU 56 LI 0207-0211/21/2005 Mn-54 -2.0OE+01 1.30E+01 5.20E+01 MU 56 L10207-0211/21/2005 Nb-95 -3.90E+01 2.70E+01 9.80E+01 MU 56 LI 0207-0211/21/2005 Ru-103 -1 .60E+01 1.20E+01 4.60E+01 MU 56 LI 0207-0211/21/2005 Ru-106 5.1OE+01 8.90E+01 3.1OE+02 MU 56 LI 0207-0211/21/2005 Sb-124 7.OOE+OO 3.OOE+01 1.20E+02 MU MU 56 56 LI 0207-0211/21/2005 LI 0207-0211/21/2005 Sb-125 Se-75 1.20E+01

-3.0OE+OO 3.30E+01 1.30E+01 1.IOE+02 4.40E+01 I

MU 56 LI 0207-0211/21/2005 Zn-65 -5.0OE+OO 7.0OE+0I 2.40E+02 MU 56 LI 0207-0211/21/2005 Zr-95 -4.70E+01 2.40E+01 9.70E+01 MU 59 L9343-02 5/26/2005 AcTh-228 2.OOE+00 3.OOE+01 1.1OE+02 MU 59 L9343-02 5/26/2005 Ag-108m I.80E+OO 6.90E+00 2.50E+01 MU 59 L9343-02 5/26/2005 Ag-1 Om 4.OOE+OO 1.OOE+01 3.70E+01 MU MU MU 59 59 59 L9343-02 5/26/2005 L9343-02 5/26/2005 L9343-02 5/26/2005 Ba-140 Be-7 Ce-141

-6.OOE+OO 6.40E+01 3.O0E+OO 2.OOE+01 7.80E+01 1.40E+01 8.40E+01 2.70E+02 5.OOE+0I L

MU 59 L9343-02 5/26/2005 Ce-144 3.70E+01 4.OOE+01 1.40E+02 MU 59 L9343-02 5/26/2005 Co-57 9.OOE-01 5.20E+00 1.80E+OI MU 59 L9343-02 5/26/2005 Co-58 -1.21 E+01 8.IOE+OO 3.50E+01 MU 59 L9343-02 5/26/2005 Co-60 -5.OOE-01 9.70E+00 3.70E+01 MU 59 L9343-02 5/26/2005 Cr-51 2.00E+01 1.OOE+02 3.70E+02 MU 59 L9343-02 5/26/2005 Cs-1 34 -1.86E+01 8.1OE+00 3.60E+01 MU 59 L9343-02 5/26/2005 Cs-137 -3.50E+00 8.1OE+00 3.1OE+01 MU 59 L9343-02 5/26/2005 Fe-59 2.90E+01 3.20E+01 1.1OE+02 MU 59 L9343-02 5/26/2005 1-131 8.20E+01 3.90E+01 1.20E+02 MU MU 59 59 L9343-02 5/26/2005 L9343-02 5/26/2005 K-40 La-140 9.20E+02

-7.00E+OO 1.70E+02 2.30E+01 4.20E+02 9.60E+01 L

MU 59 L9343-02 5/26/2005 Mn-54 -3.67E+01 8.20E+00 4.OOE+01 MU MU MU 59 59 59 L9343-02 5/26/2005 L9343-02 5/26/2005 L9343-02 5/26/2005 Nb-95 Ru-103 Ru-106 4.OOE+OO

-5.60E+00 1.30E+01 1.OOE+01 9.60E+00 8.70E+01 3.70E+01 3.70E+01 3.1 OE+02 L

MU 59 L9343-02 5/26/2005 Sb-124 6.OOE+OO 2.O0E+01 8.OOE+01 MU 59 L9343-02 5/26/2005 Sb-125 -3.OOE+OO 1.90E+01 7.I0E+01 MU MU 59 59 L9343-02 5/26/2005 L9343-02 5/26/2005 Se-75 Zn-65

-3.OOE+OO

-1.IOE+01 1.OOE+01 1.80E+01 3.60E+01 7.20E+01 L MU MU 59 59 L9343-02 5/26/2005 LI 0206-0211/22/2005 Zr-95 AcTh-228

-5.OOE+OO

-2.40E+01 1.50E+01 3.70E+01 5.90E+01 1.50E+02 Li MU 59 LI 0206-0211/22/2005 Ag-108m -2.20E+01 1.1OE+01 4.30E+01 MU MU 59 59 Li 0206-0211/22/2005 LI 0206-0211/22/2005 Ag-11Om Ba-140 Be-7

-1.60E+01 7.0OE+OO 4.0OE+01 1.30E+01 2.30E+01 I.IOE+02 5.40E+01 8.80E+01 3.80E+02 G

MU 59 LI 0206-0211/22/2005 MU MU MU 59 59 59 Li 0206-0211/22/2005 LI 0206-0211/22/2005 L10206-0211/22/2005 Ce-141 Ce-144 Co-57 2.40E+01 5.30E+01

-3.40E+00 2.OOE+01 6.70E+01 8.60E+00 6.60E+01 2.30E+02 3.10E+01 L

MU 59 Li 0206-0211/22/2005 Co-58 2.OOE+OO 1.1OE+01 4.20E+01 MU 59 Li 0206-0211/22/2005 Co-60 -5.O0E+OO 1.IOE+01 4.50E+01 MU 59 Li 0206-0211/22/2005 Cr-51 -8.00E+OI 1.30E+02 4.70E+02 MU 59 Li 0206-0211/22/2005 Cs-1 34 1.20E+01 1.30E+01 4.50E+01 MU 59 Li 0206-0211/22/2005 Cs-137 -1.70E+01 1.20E+01 4.90E+01 MU 59 L10206-0211/22/2005 Fe-59 -6.OOE+01 2.90E+01 1.20E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-139-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 r SAMF'LE TYPE STATION LSN END DATE NUCLIDE CONC (pCilkg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

MU 59 L10206-0211/22/2005 1-131 7.OOE+00 3.90E+01 1.40E+02 ML' 59 L10206-0211122/2005 K-40 1.09E+03 2.20E+02 5.70E+02

ML' 59 LI 0206-0211/22/2005 La-140 8.OOE+00 2.70E+01 1.OOE+02 ML' 59 LI 0206-0211/22/2005 Mn-54 1.60E+01 1.20E+01 3.80E+0I MLI 59 LI 0206-0211/22/2005 Nb-95 -2.OOE+00 2.40E+01 8.50E+0I Ml 59 L10206-0211/22/2005 Ru-103 -3.1 OE+01 1.30E+01 5.40E+0I MUL 59 LI 0206-0211122/2005 Ru-106 -1.30E+02 1.1OE+02 4.40E+02 MLI 59 L10206-0211/22/2005 Sb-124 -7.20E+01 3.OOE+01 1.40E+02 ML' 59 LI 0206-0211/22/2005 Sb-125 8.50E+01 3.50E+01 1.10E+02 MLI 59 LI 0206-0211/22/2005 Se-75 4.OOE+00 1.50E+01 5.30E+OI MU 59 L10206-0211/22/2005 Zn-65 8.60E+01 6.1OE+01 2.00E+02 MU 59 LI 0206-0211/22/2005 Zr-95 -1.OOE+01 2.1 0E+01 8.00E+0I

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-140-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 2 L9358-01 6/1/2005 AcTh-228 1.19E+03 8.50E+01 2.80E+02

SE 2 L9358-01 6/1/2005 Ag-108m 1.OOE+00 1.40E+01 5.10E+01 SE 2 L9358-01 6/1/2005 Ag-1I1m 2.IOE+01 2.30E+01 7.90E+01 SE 2 L9358-01 6/1/2005 Ba-140 -9.OOE+02 4.20E+02 1.60E+03 SE 2 L9358-01 6/1/2005 Be-7 4.50E+02 2.10E+02 6.60E+02 SE 2 L9358-01 6/1/2005 Ce-141 7.20E+01 5.OOE+01 1.70E+02 SE 2 L9358-01 6/1/2005 Ce-144 2.60E+02 1.IOE+02 3.60E+02 SE 2 L9358-01 6/1/2005 Co-57 -1.OOE+00 1.40E+01 4.80E+01 SE 2 L9358-01 6/1/2005 Co-58 -7.OOE+00 2.10E+01 7.90E+01 SE 2 L9358-01 6/1/2005 Co-60 1.90E+01 1.80E+01 6.20E+01 SE 2 L9358-01 6/1/2005 Cr-51 -4.OOE+01 3.OOE+02 I.IOE+03 SE 2 L9358-01 6/1/2005 Cs-134 -3.30E+01 1.70E+01 6.70E+01 SE 2 L9358-01 6/1/2005 Cs-1 37 -3.10E+01 2.20E+01 8.20E+01 SE 2 L9358-01 6/1/2005 Fe-59 -4.20E+01 5.80E+01 2.20E+02 SE 2 L9358-01 6/1/2005 1-131 2.40E+02 2.70E+02 9.20E+02 SE 2 L9358-01 6/1/2005 K-40 1.21 E+04 6.60E+02 7.40E+02

SE 2 L9358-01 6/1/2005 La-140 2.80E+02 1.80E+02 5.90E+02 SE 2 L9358-01 6/1/2005 Mn-54 2.60E+01 2.OOE+01 6.90E+01 SE 2 L9358-01 6/1/2005 Nb-95 -1.60E+01 3.80E+01 1.40E+02 j SE 2 L9358-01 6/1/2005 Ru-103 -1.50E+01 2.70E+01 I.OOE+02 SE 2 L9358-01 6/112005 Ru-106 -1.IOE+02 1.60E+02 5.90E+02 SE 2 L9358-01 6/1/2005 Sb-124 3.60E+01 3.60E+01 1.30E+02 L SE 2 L9358-01 6/1/2005 Sb-125 3.20E+01 4.OOE+01 1.40E+02 SE SE SE 2

2 2

L9358-01 L9358-01 L9358-01 611/2005 6/1/2005 6/1/2005 Se-75 Zn-65 Zr-95 1.60E+01

-3.50E+01 1.OOE+01 2.50E+01 8.30E+01 3.80E+01 8.40E+01 2.90E+02 1.50E+02 L

SE 2 L9358-02 6/1/2005 AcTh-228 1.87E+03 1.OOE+02 3.40E+02

SE 2 L9358-02 6/1/2005 Ag-108m -3.OOE+01 1.70E+01 6.60E+01 SE 2 L9358-02 6/1/2005 Ag-110m -8.OOE+00 2.60E+01 9.90E+01 SE 2 L9358-02 611/2005 Ba-140 1.40E+02 4.20E+02 1.50E+03 SE 2 L9358-02 6/1/2005 Be-7 -5.OOE+01 2.40E+02 8.70E+02 SE 2 L9358-02 6/1/2005 Ce-141 6.70E+01 5.60E+01 1.90E+02 SE 2 L9358-02 6/1/2005 Ce-144 3.OOE+01 1.20E+02 4.20E+02 SE 2 L9358-02 6/1/2005 Co-57 -3.30E+01 1.40E+01 5.1OE+01 SE 2 L9358-02 6/1/2005 Co-58 -4.OOE+00 2.50E+01 9.30E+01 [

SE 2 L9358-02 6/1/2005 Co-60 -9.OOE+00 1.80E+01 7.40E+01 SE 2 L9358-02 6/1/2005 Cr-51 I.IOE+02 3.20E+02 1.10E+03 SE 2 L9358-02 6/1/2005 Cs-134 -4.OOE+00 1.90E+01 6.90E+01 SE 2 L9358-02 6/1/2005 Cs-137 -5.OOE+00 2.30E+01 8.40E+01 SE 2 L9358-02 6/1/2005 Fe-59 O.OOE+00 6.50E+01 2.40E+02 SE 2 L9358-02 6/1/2005 1-131 3.50E+02 3.10E+02 1.OOE+03 SE 2 L9358-02 6/1/2005 K-40 1.21E+04 7.30E+02 6.50E+02

SE 2 L9358-02 6/1/2005 La-140 2.70E+02 1.90E+02 6.50E+02 SE 2 L9358-02 6/1/2005 Mn-54 2.40E+01 2.30E+01 7.70E+01 SE 2 L9358-02 6/1/2005 Nb-95 -9.IOE+01 4.80E+01 1.90E+02 SE 2 L9358-02 6/1/2005 Ru-103 -1.OOE+01 3.50E+01 1.30E+02 SE 2 L9358-02 6/1/2005 Ru-106 2.OOE+02 2.OOE+02 6.90E+02 SE 2 L9358-02 6/1/2005 Sb-124 3.OOE+01 7.10E+01 2.60E+02 SE 2 L9358-02 6/1/2005 Sb-125 -1.02E+02 5.30E+01 2.OOE+02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-141-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE L9358-02 6/1/2005 Se-75 5.OOE+00 2.60E+01 9.OOE+01 SE L9358-02 6/1/2005 Zn-65 -6.OOE+01 1.10E+02 3.90E+02 SE L9358-02 611/2005 Zr-95 1.20E+01 4.50E+01 1.70E+0O SE L9358-03 6/1/2005 AcTh-228 1.79E+03 9.1 OE+01 2.60E+O;'

L SE SE L9358-03 6/1/2005 L9358-03 6/1/2005 L9358-03 6/1/2005 Ag-108m Ag-11 Om Ba-140

-1.OOE+00

-8.OOE+00

-2.50E+02 1.60E+01 3.1 OE+01 4.30E+02 5.60E+0I 1.1 OE+02 1.60E+03 SE 0.OOE+00 2.20E+02 7.80E+O:'

L SE SE SE L9358-03 6/1/2005 L9358-03 6/1/2005 L9358-03 6/1/2005 Be-7 Ce-141 Ce-144 1.60E+01

-2.20E+02 5.70E+01 2.70E+02 1.90E+O:'

9.1 OE+O:'

I SE SE L9358-03 6/1/2005 L9358-03 6/1/2005 Co-57 Co-58

-2.00E+01

-9.OOE+00 1.70E+01 2.40E+01 5.90E+0'I 9.00E+0OI SE L9358-03 6/1/2005 Co-60 O.OOE+00 2.20E+01 8.10E+0OI SE L9358-03 6/1(2005 Cr-51 -5.00E+01 3.40E+02 1.20E+0:3 L SE SE L9358-03 6/1/2005 L9358-03 6/1/2005 Cs-1 34 Cs-1 37 Fe-59

-2.20E+01

-7.OOE+00

-6.30E+01 2.00E+01 2.1 OE+01 6.1OE+01 7.50E+0OI 7.70E+O I 2.40E+0:2 SE L9358-03 6/1/2005 I SE SE L9358-03 6/1/2005 L9358-03 6/1/2005 1-131 K-40

-4.OOE+02 1.18E+04 3.40E+02 7.OOE+02 1.20E+0:3 9.1 OE+02 SE L9358-03 6/1/2005 La-140 -1.OOE+02 2.30E+02 8.20E+02 SE L9358-03 6/1/2005 Mn-54 1.60E+01 2.OOE+01 7.00E+O I L SE SE L9358-03 6/1/2005 L9358-03 6/1/2005 Nb-95 Ru-103

-4.20E+01 3.40E+01 4.OOE+01 2.70E+01 1.50E+0;2 9.10E+01 SE L9358-03 6/1/2005 Ru-106 1.OOE+01 2.1OE+02 7.60E+02 SE L9358-03 6/1/2005 Sb-124 -2.70E+01 5.00E+01 2.10E+02 SE L9358-03 6/1/2005 Sb-125 5.10E+01 5.10E+01 1.70E+02 SE L9358-03 6/1/2005 Se-75 -2.50E+01 2.60E+01 9.50E+01 SE L9358-03 6/1/2005 Zn-65 2.OOE+01 11.OOE+02 3.60E+02 SE L9358-03 6/1/2005 Zr-95 6.20E+01 5.50E+01 1.80E+02 SE LI 0203-0111/21/2005 AcTh-228 7.01 E+02 5.20E+01 1.70E+02 SE Li 0203-0111/21/2005 Ag-1 08m 1.67E+01 9.80E+00 3.20E+01 SE L10203-0111/21/2005 Ag-110m 5.OOE+00 1.30E+01 4.70E+01 SE L10203-0111/21/2005 Ba-140 -2.OOE+00 5.90E+01 2.10E+02 SE LI0203-0111/21/2005 Be-7 -9.80E+01 9.90E+01 3.60E+02 SE L10203-0111/21/2005 Ce-141 5.OOE+00 2.00E+01 6.80E+01 SE L10203-0111/21/2005 Ce-144 -5.50E+01 7.70E+01 2.70E+02 SE L10203-0111/21/2005 Co-57 1.60E+00 9.50E+00 3.20E+01 SE L10203-0111/21/2005 Co-58 -5.00E+OO 1.1OE+01 3.90E+01 SE L10203-0111/21/2005 Co-60 2.70E+01 1.30E+01 3.90E+01 SE L10203-0111/21/2005 Cr-51 9.OOE+01 1.1OE+02 3.60E+02 SE L10203-0111/21/2005 Cs-134 2.OOE+0O 1.OOE+01 3.50E+01 SE L10203-0111/21/2005 Cs-137 7.OOE+00 1.30E+01 4.40E+O I SE L10203-0111/21/2005 Fe-59 -4.50E+01 2.30E+01 9.20E+0 1 SE L10203-0111/21/2005 1-131 2.60E+01 2.00E+01 6.70E+C 1 SE Li0203-0111/21/2005 K-40 1.18E+04 4.50E+02 3.90E+C2 SE L10203-0111/21/2005 La-140 2.60E+01 3.OOE+01 1.OOE+C2 SE L10203-0111/21/2005 Mn-54 4.OOE+00 1.20E+01 4.20E+C1 SE L10203-0111/21/2005 Nb-95 2.OOE+01 1.80E+01 6.1 OE+C1 SE L10203-0111/21/2005 Ru-103 -1.50E+01 1.1OE+01 4.10E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-142-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 2 L10203-0111/21/2005 Ru-106 -6.OOE+01 1.IOE+02 3.90E+02 SE 2 LI 0203-0111/21/2005 Sb-I124 1.30E+01 1.70E+01 6.1 OE+01 SE 2 LI 0203-0111/21/2005 Sb-125 -1.50E+01 3.20E+01 1.1OE+02 SE 2 LI 0203-0111/21/2005 Se-75 -3.OOE+O0 1.60E+01 5.40E+01 SE 2 LI 0203-0111/21/2005 Zn-65 -8.OOE+OO 5.60E+01 1.90E+02 SE 2 LI 0203-0111/21/2005 Zr-95 4.10E+01 1.90E+01 6.OOE+01 SE 2 LI 0203-0211/21/2005 AcTh-228 9.39E+02 4.OOE+01 1.30E+02 SE 2 LI 0203-0211/21/2005 Ag-108m -1.09E+01 8.60E+00 3.1 OE+01 SE 2 LI 0203-0211/21/2005 Ag-1I Om 2.OOE+01 1.IOE+01 3.50E+01 SE 2 L10203-0211/21/2005 Ba-140 I.OOE+00 4.40E+01 1.50E+02 SE 2 L10203-0211/21/2005 Be-7 -1.OOE+oo 8.70E+01 3.OOE+02 I SE 2 L10203-0211/21/2005 Ce-141 5.0OE+OO 1.90E+01 6.40E+01 i 6-j SE 2 LI 0203-0211/21/2005 Ce-144 -7.50E+01 7.30E+01 2.50E+02 SE 2 L10203-0211/21/2005 Co-57 -4.OOE+00 9.OOE+00 3.IOE+01 SE 2 L10203-0211/21/2005 Co-58 -1.47E+01 9.10E+00 3.40E+01 SE 2 L10203-0211/21/2005 Co-60 5.40E+00 8.60E+00 3.OOE+01 SE 2 LI 0203-0211/21/2005 Cr-51 8.60E+01 9.60E+01 3.20E+02 I )

SE 2 LI 0203-0211/21/2005 Cs-134 5.70E+01 3.40E+01 I .IOE+02 SE 2 L10203-0211/21/2005 Cs-137 5.OOE+00 1.OOE+01 3.60E+01 SE 2 LI 0203-0211/21/2005 Fe-59 -1 .80E+01 2.OOE+01 7.1 OE+01 1.30E+01 1.80E+01 6.20E+01 SE SE SE 2

2 2

LI 0203-0211/21/2005 LI 0203-0211/21/2005 L10203-0211/21/2005 1-131 K-40 La-140 1.26E+04 3.90E+01 3.50E+02 2.50E+01 3.20E+02 8.40E+01 L

SE 2 LI 0203-0211/21/2005 Mn-54 -1.67E+01 8.90E+00 3.30E+01 SE SE 2

2 LI 0203-0211/21/2005 LI 0203-0211/21/2005 Nb-95 Ru-1 03

-3.40E+01

-1.70E+01 1.50E+01 9.20E+00 5.40E+01 3.40E+01 L7 SE 2 LI 0203-0211/21/2005 Ru-1 06 4.50E+01 8.1 OE+01 2.80E+02 SE SE SE 2

2 2

LI 0203-0211/21/2005 LI 0203-0211/21/2005 LI 0203-0211/21/2005 Sb-124 Sb-125 Se-75 2.80E+01

-1.IOE+01

-6.OOE+oo 1.40E+01 2.70E+01 1.30E+01 4.50E+01 9.40E+01 4.30E+01

[L SE 2 LI 0203-0211/21/2005 Zn-65 1.OOE+01 4.20E+01 1.40E+02 SE 2 LI 0203-0211/21/2005 Zr-95 6.OOE+o0 1.70E+01 6.OOE+01 SE 2 LI 0203-0311/21/2005 AcTh-228 1.23E+03 7.20E+01 2.20E+02 SE 2 LI 0203-0311/21/2005 Ag-108m -9.OOE+00 1.30E+01 4.50E+01 SE 2 L10203-0311/21/2005 Ag-11 Om O.OOE+O0 1.90E+01 6.90E+01 SE 2 LI 0203-0311/21/2005 Ba-140 -1.30E+01 7.IOE+01 2.50E+02 SE 2 LI 0203-0311/21/2005 Be-7 -7.OOE+01 1.20E+02 4.40E+02 SE 2 L10203-0311/21/2005 Ce-141 3.20E+01 2.50E+01 8.40E+01 SE 2 L10203-0311/21/2005 Ce-144 -4.40E+01 9.60E+01 3.30E+02 SE 2 LI 0203-0311/21/2005 Co-57 4.OOE+00 1.20E+01 4.1 OE+01 SE 2 LI 0203-0311/21/2005 Co-58 -4.OOE+O0 1.40E+01 5.IOE+01 SE 2 LI 0203-0311/21/2005 Co-60 2.OOE+01 1.60E+01 5.40E+01 SE 2 L10203-0311/21/2005 Cr-51 8.OOE+01 1.40E+02 4.70E+02 SE 2 L10203-0311/21/2005 Cs-134 2.OOE+o0 1.30E+01 4.60E+01 SE 2 LI 0203-0311/21/2005 Cs-137 -3.OOE+O0 1.60E+01 5.70E+01 SE 2 L10203-0311/21/2005 Fe-59 -1.50E+01 3.OOE+01 I .IOE+02 SE 2 LI 0203-0311/21/2005 1-131 -4.OOE+00 2.70E+01 9.40E+01 SE 2 LI 0203-0311/21/2005 K-40 1.36E+04 5.60E+02 5.20E+02 SE 2 L10203-0311/21/2005 La-140 2.90E+01 3.90E+01 1.30E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-143-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPv I II - cQTATIMVI

- I- . - .

Iq fATF nJJ NUCLIDE (oCi/ka)

.1 - -

(pCi/kA) (pCi/kg)

SE 2 L10203-0311/21/2005 Mn-54 2.1OE+01 1.50E+01 5.IOE+01 SE 2 LI 0203-0311/21/2005 Nb-95 -1.40E+01 1.70E+01 6.30E+01 SE 2 L10203-0311/21/2005 Ru-1 03 O.OOE+00 1.50E+01 5.1 0E+01 SE 2 LI 0203-0311/21/2005 Ru-1 06 O.OOE+00 1.40E+02 4.80E+02 SE 2 LI 0203-0311/21/2005 Sb-124 -1.1 OE+01 2.1OE+01 9.1OE+01 SE 2 L10203-0311/21/2005 Sb-125 -5.90E+01 3.50E+01 1.30E+02 SE 2 LI 0203-0311/21/2005 Se-75 -1.30E+01 1.70E+01 5.90E+01 SE 2 LI 0203-0311/21/2005 Zn-65 -2.60E+01 7.20E+01 2.50E+02 SE 2 LI 0203-0311/21/2005 Zr-95 1.60E+01 2.50E+01 8.60E+01 SE L9358-04 5/26/2005 AcTh-228 3.68E+02 5.50E+01 I.5OE+02 SE L9358-04 5/26/2005 Ag-108m 3.60E+00 9.50E+00 3.40E+01, SE L9358-04 5/26/2005 Ag-110m 1.1OE+01 1.70E+01 6.1 OE+O, SE L9358-04 5/26/2005 Ba-140 8.OOE+01 2.80E+02 1.00E+03 SE L9358-04 5/26/2005 Be-7 I.1OE+02 1.50E+02 5.30E+0.!

SE L9358-04 5/26/2005 Ce-141 -2.50E+01 3.80E+01 1.30E+O:!

SE L9358-04 5/26/2005 Ce-144 -9.OOE+01 7.70E+01 2.80E+O;!

SE L9358-04 5/26/2005 Co-57 -4.00E+OO 1.1OE+01 3.90E+O'I SE L9358-04 5/26/2005 Co-58 -1.80E+01 1.40E+01 5.80E+O0I SE L9358-04 5/26/2005 Co-60 5.00E+OO 1.40E+01 5.OOE+O0I SE L9358-04 5/26/2005 Cr-51 O.OOE+00 2.70E+02 9.40E+02 SE L9358-04 5/26/2005 Cs-134 O.OOE+00 1.70E+01 6.00E+O0I SE L9358-04 5/2612005 Cs-137 -5.0OE+OO 1.20E+01 4.60E+Ol SE L9358-04 5/26/2005 Fe-59 -2.80E+01 5.20E+01 I.9OE+02 SE L9358-04 5/26/2005 1-131 4.50E+02 3.50E+02 1.20E+0:3 SE L9358-04 5/26/2005 K-40 1.62E+04 6.40E+02 4.5OE+02 SE L9358-04 5/26/2005 La-140 -1.1OE+02 1.90E+02 7.1 OE+02 SE L9358-04 5/26/2005 Mn-54 -2.30E+01 1.40E+01 5.50E+O I SE L9358-04 5/26/2005 Nb-95 4.30E+01 2.50E+01 7.90E+O I SE L9358-04 5/26/2005 Ru-103 -2.90E+01 1.80E+01 7.40E+O I SE L9358-04 5/26/2005 Ru-106 -1.50E+02 1.10E+02 4.50E+0:2 SE L9358-04 5/26/2005 Sb-124 8.OOE+OO 2.20E+01 9.30E+0 1 SE L9358-04 5/26/2005 Sb-125 5.40E+01 3.00E+01 9.90E+0 1 SE L9358-04 5/26/2005 Se-75 5.OOE+00 1.70E+01 6.1OE+01 SE L9358-04 5/26/2005 Zn-65 -8.90E+01 4.OOE+01 1.60E+02 SE L9358-04 5/26/2005 Zr-95 -3.30E+01 2.30E+01 .1 OE+02 SE L9358-05 5/26/2005 AcTh-228 3.02E+02 6.OOE+01 2.10E+02 SE L9358-05 5/26/2005 Ag-108m -2.OOE+01 1.OOE+01 4.20E+01 SE L9358-05 5/26/2005 Ag-I1 Om -2.70E+01 1.70E+01 7.50E+01 SE L9358-05 5/26/2005 Ba-140 -1.20E+02 3.50E+02 1.30E+03 SE L9358-05 5/26/2005 Be-7 2.OOE+01 1.60E+02 6.OOE+02 SE L9358-05 5/26/2005 Ce-141 5.90E+01 3.60E+01 1.20E+02 SE L9358-05 5/26/2005 Ce-144 -4.20E+01 6.20E+01 2.30E+02 SE L9358-05 5/26/2005 Co-57 -6.80E+00 7.50E+00 2.80E+01 SE L9358-05 5/26/2005 Co-58 1.80E+01 2.00E+01 6.90E+01 SE L9358-05 5/26/2005 Co-60 -4.OOE+00 1.60E+01 6.20E+01 SE L9358-05 5/26/2005 Cr-51 -5.00E+01 2.30E+02 8.50E+02 SE L9358-05 5/26/2005 Cs-134 -6.00E+OO 1.20E+01 4.50E+01 SE L9358-05 5/26/2005 Cs-1 37 9.0OE+OO 1.50E+01 5.30E+01 SE L9358-05 5/26/2005 Fe-59 -2.OOE+01 5.70E+01 2.20E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-144-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 Li SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE .

NUCLIDE (DCi/k-i) (pCi/kg) (pCi/kg)

SE L9358-05 5/26/2005 1-131 6.20E+02 3.OOE+02 9.40E+02 SE L9358-05 5/26/2005 K-40 1.59E+04 7.70E+02 4.80E+02 L..

SE L9358-05 5/26/2005 La-140 2.1OE+02 2.OOE+02 6.90E+02 SE L9358-05 5/26/2005 Mn-54 6.OOE+O0 1.40E+01 5.20E+01 SE L9358-05 5/26/2005 Nb-95 O.OOE+00 3.30E+01 1.20E+02 SE L9358-05 5/26/2005 Ru-1 03 7.OOE+00 2.10E+01 7.70E+01 SE L9358-05 5/26/2005 Ru-106 -8.0OE+O1 1.1OE+02 4.40E+02 SE L9358-05 5/26/2005 Sb-124 1.50E+01 3.30E+01 1.40E+02 I I I

SE L9358-05 5/26/2005 Sb-125 1.40E+01 3.0OE+0I 1.10E+02 SE L9358-05 5/26/2005 Se-75 3.0OE+OO 1.60E+01 5.80E+01 SE L9358-05 5/26/2005 Zn-65 -4.80E+01 4.50E+01 1.80E+02 SE L9358-05 5/26/2005 Zr-95 7.00E+00 2.90E+01 1.20E+02 IU SE L9358-06 5/26/2005 AcTh-228 2.48E+02 6.20E+01 2.40E+02 SE L9358-06 5/26/2005 Ag-108m 7.70E+00 9.80E+00 3.50E+01 SE L9358-06 5/26/2005 Ag-1I0m O.OOE+OO 2.50E+01 9.1 OE+01 SE L9358-06 5/26/2005 Ba-140 5.60E+02 4.1 OE+02 1.40E+03 SE L9358-06 5/26/2005 Be-7 O.OOE+OO 1.50E+02 5.60E+02 SE L9358-06 5/26/2005 Ce-141 -4.OOE+01 3.70E+01 1.40E+02 SE L9358-06 5/26/2005 Ce-144 -4.70E+01 7.50E+01 2.70E+02 SE L9358-06 5/26/2005 Co-57 -2.OOE+00 1.OOE+01 3.50E+01 SE SE L9358-06 L9358-06 5/26/2005 5/26/2005 Co-58 Co-60

-9.00E+OO 1.60E+01 1.90E+01 1.50E+01 7.60E+01 5.30E+01 V SE SE SE L9358-06 L9358-06 L9358-06 5/26/2005 5/26/2005 5/26/2005 Cr-51 Cs-134 Cs-137 2.40E+02

-1.40E+01

-5.00E+OO 2.60E+02 2.OOE+01 1.30E+01 9.OOE+02 7.50E+01 5.1 OE+01 L

SE L9358-06 5/26/2005 Fe-59 -2.1 OE+01 6.10E+01 2.40E+02 SE L9358-06 5/26/2005 1-131 1.OOE+02 3.60E+02 1.30E+03 SE SE SE L9358-06 L9358-06 L9358-06 5/26/2005 5/26/2005 5/26/2005 K-40 La-140 Mn-54 1.60E+04 1.60E+02 I.OOE+01 7.90E+02 2.OOE+02 1.40E+01 5.50E+02 7.OOE+02 5.OOE+01 VL L9358-06 5/26/2005 Nb-95 -1.OOE+OO 3.OOE+01 1.1 OE+02 SE SE SE L9358-06 L9358-06 5/26/2005 5/26/2005 Ru-1 03 Ru-1 06

-4.00E+01

-1.90E+02 2.10E+01 1.60E+02 8.90E+01 6.1 0E+02 L

SE L9358-06 5/26/2005 Sb-124 9.OOE+01 4.70E+01 7.OOE+02 SE L9358-06 5/26/2005 Sb-125 1.40E+01 3.20E+01 1.20E+02 SE L9358-06 5/26/2005 Se-75 3.OOE+00 1.60E+01 5.80E+01 SE L9358-06 5/26/2005 Zn-65 -2.1 OE+01 4.50E+01 1.70E+02 SE SE SE 7

7 L9358-06 5/26/2005 L10203-0411/21/2005 L10203-0411/21/2005 Zr-95 AcTh-228 Ag-108m

-3.OOE+00 3.07E+02

-7.1 OE+00 3.1 OE+01 4.60E+01 8.60E+OO 1.40E+02 1.60E+02 3.20E+01 E

SE SE 7

7 L10203-0411/21/2005 L1 0203-0411/21/2005 Ag-11 Om Ba-140

-7.00E+00

-6.40E+01 1.50E+01 5.70E+01 5.60E+01 2.1 OE+02 I

SE 7 L1 0203-0411/21/2005 Be-7 1.37E+02 8.50E+01 2.80E+02 SE 7 L10203-0411/21/2005 Ce-141 -2.OOE+00 1.80E+01 6.IOE+O1 SE 7 L10203-0411/21/2005 Ce-144 -8.80E+01 6.60E+01 2.40E+02 SE 7 L10203-0411/21/2005 Co-57 -6.40E+00 8.90E+00 3.1OE+01 SE 7 L10203-0411/21/2005 Co-58 -2.40E+01 1.20E+01 4.70E+01 SE 7 L10203-0411/21/2005 Co-60 -3.OOE+OO I.IOE+01 4.1OE+01 SE 7 L10203-0411/21/2005 Cr-51 2.50E+01 9.70E+01 3.40E+02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-145-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L_ TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 7 L10203-0411/21/2005 Cs-134 8.00E+00 1.OOE+01 3.60E+O',

L SE 7 L10203-0411/21/2005 Cs-137 9.0OE+00 3.00E+01 1.OOE+01 3.10E+01 3.50E+O' 1.OOE+O, SE 7 L10203-0411/21/2005 Fe-59 SE 7 L10203-0411/21/2005 1-131 -9.OOE+00 1.90E+01 7.OOE+Ol SE 7 L10203-0411/21/2005 K-40 1.61E+04 5.30E+02 3.90E+O;2!

L SE 7 L10203-0411/21/2005 La-140 -1.80E+01 2.60E+01 9.80E+OI 3.70E+OI SE 7 L10203-0411/21/2005 Mn-54 3.OOE+00 1.OOE+01 1.30E+01 4.60E+OI L SE SE SE 7

7 7

L10203-0411/21/2005 L10203-0411/21/2005 L10203-0411/21/2005 Nb-95 Ru-103 Ru-106 4.00E+00

-1.OOE+00

-1.67E+02 1.10E+01 9.90E+01 3.80E+OI 3.80E+O:'

9.O0E+00 1.40E+01 5.40E+OI L SE SE SE 7

7 7

L10203-0411/21/2005 L10203-0411/21/2005 L10203-0411/21/2005 Sb-124 Sb-125 Se-75

-2.20E+01 7.OOE+0O 2.90E+01 1.40E+01 1.10E+02 4.60E+OI SE 7 LI 0203-0411/21/2005 Zn-65 -7.80E+01 3.30E+01 1.30E+0:2 L SE 7 L10203-0411/21/2005 L10203-0511/21/2005 Zr-95 AcTh-228 1.40E+01 3.28E+02 1.40E+01 4.90E+01 6.1OE+0I 1.60E+0 2 SE 7 SE 7 L10203-0511/21/2005 Ag-108m -3.50E+00 8.90E+00 3.20E+OI SE 7 L10203-0511/21/2005 Ag-110m 2.0OE+OO 1.30E+01 4.70E+0I SE 7 L10203-0511/21/2005 Ba-140 -1.20E+01 4.90E+01 1.80E+0:2 SE 7 L10203-0511/21/2005 Be-7 5.IOE+01 8.60E+01 3.OOE+02 SE 7 L10203-0511/21/2005 Ce-141 -7.OOE+00 1.80E+01 6.30E+O1 U SE SE 7

7 L10203-0511/21/2005 L10203-0511/21/2005 Ce-144 Co-57 3.30E+01

-5.OOE+00 6.60E+01 8.60E+00 2.20E+02 3.00E+01 Co-58 -2.00E+00 1.10E+01 4.10E+01 U SE SE SE 7

7 7

L10203-0511/21/2005 L10203-0511/21/2005 L10203-0511/21/2005 Co-60 Cr-51

-5.OOE+00 1.10E+02 1.10E+01 1.00E+02 4.10E+01 3.50E+02 SE 7 L10203-0511/21/2005 Cs-134 -4.40E+01 3.80E+01 1.30E+02 SE 7 L10203-0511/21/2005 Cs-137 -9.OOE+O0 1.OOE+01 3.90E+01 L SE 7 7

L10203-0511/21/2005 L10203-0511/21/2005 Fe-59 1-131

-4.40E+01 2.70E+01 2.70E+01 1.90E+01 1.OOE+02 6.30E+01 SE 7 L10203-0511/21/2005 K-40 1.77E+04 5.20E+02 3.10E+02 L SE SE SE 7

7 L10203-0511/21/2005 L10203-0511/21/2005 La-140 Mn-54

-8.OOE+00

-3.OOE+00 2.50E+01 1.10E+01 3.20E+02 3.90E+01 SE 7 L10203-0511/21/2005 Nb-95 -7.OOE+00 1.tOE+01 4.IOE+01 L SE SE 7

7 L10203-0511/21/2005 L10203-0511/21/2005 Ru-103 Ru-106

-1.IOE+01 2.80E+01 1.OOE+01 9.40E+01 3.80E+01 3.30E+02 SE 7 L10203-0511/21/2005 Sb-124 -2.OOE+00 1.40E+01 5.90E+01 SE 7 L10203-0511/21/2005 Sb-125 5.00E+01 2.70E+01 8.80E+01 SE 7 L10203-0511/21/2005 Se-75 -I.10E+01 1.30E+01 4.70E+01 SE 7 L10203-0511/21/2005 Zn-65 5.80E+01 5.OOE+01 1.70E+C2 SE 7 L10203-0511/21/2005 Zr-95 -9.OOE+00 1.50E+01 6.60E+C1 SE 7 L10203-0611/21/2005 AcTh-228 2.78E+02 5.50E+01 2.10E+02 SE 7 L10203-0611/21/2005 Ag-108m -8.90E+00 9.20E+00 3.40E+C1 SE 7 L10203-0611/21/2005 Ag-110m 1.20E+01 1.80E+01 6.1OE+C1 SE 7 L10203-0611/21/2005 Ba-140 -7.80E+01 5.90E+01 2.20E+C2 SE 7 L10203-0611/21/2005 Be-7 3.30E+01 9.OOE+01 3.1OE+C2 SE 7 L10203-0611/21/2005 Ce-141 6.OOE+00 1.70E+01 5.80E+C1 SE 7 L10203-0611/21/2005 Ce-144 1.30E+01 6.40E+01 2.20E+C2 SE 7 L10203-0611/21/2005 Co-57 -7.OOE-01 8.50E+00 2.90E+C1

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-146-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC 1 I TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pC~kg) (pCi/kg) L-SE 7 LI 0203-0611/21/2005 Co-58 O.OOE+00 1.OOE+01 3.70E+01 SE 7 LI 0203-0611/21/2005 Co-60 6.OOE+00 1.40E+01 4.80E+01 SE 7 LI 0203-0611/21/2005 Cr-51 9.50E+01 9.90E+01 3.30E+02 SE 7 LI 0203-0611/21/2005 Cs-134 -2.60E+01 4.30E+01 1.40E+02 SE 7 LI 0203-0611/21/2005 Cs-1 37 -6.OOE+00 1.1OE+01 4.1 OE+01 Ii SE 7 LI 0203-0611/21/2005 Fe-59 -9.OOE+OO 2.60E+01 9.40E+01 SE 7 LI 0203-0611/21/2005 1-131 -3.80E+01 1.80E+01 6.90E+01 SE 7 LI 0203-0611/21/2005 K-40 2.07E+04 5.90E+02 3.30E+02 II SE 7 LI 0203-0611/21/2005 La-140 2.20E+01 2.90E+01 1.OOE+02 SE 7 LI 0203-0611/21/2005 Mn-54 1.80E+01 1.1OE+01 3.60E+01 SE 7 L10203-0611/21/2005 Nb-95 -3.00E+OO 1.30E+01 4.70E+01 SE 7 LI 0203-0611/21/2005 Ru-103 1.1OE+01 1.1 OE+01 3.70E+01 SE 7 L10203-0611/21/2005 Ru-106 7.1 OE+01 9.60E+01 3.30E+02 SE 7 L10203-0611/21/2005 Sb-124 -1.30E+01 1.70E+01 7.30E+01 Ja1 SE 7 L10203-0611/21/2005 Sb-125 1.20E+01 2.90E+01 9.90E+01 SE 7 L10203-0611/21/2005 Se-75 -1.70E+01 I AOE+01 5.OOE+01 SE 7 LI 0203-0611/21/2005 Zn-65 7.70E+01 5.10E+01 1.70E+02 SE 7 L10203-0611/21/2005 Zr-95 -1.80E+01 1.50E+01 6.50E+01 SE L9358-07 5/26/2005 AcTh-228 2.67E+02 6.30E+01 2.20E+02 SE L9358-07 5/26/2005 Ag-108m -1.30E+01 1.20E+01 4.60E+01 5/26/2005 3.00E+OO 2.1 OE+01 7.60E+01 SE SE SE L9358-07 L9358-07 L9358-07 5/26/2005 5/26/2005 Ag-t10m Ba-140 Be-7 1.OOE+02

-2.OOE+01 4.20E+02 1.80E+02 1.50E+03 6.50E+02 L

SE L9358-07 5/26/2005 Ce-141 4.OOE+01 3.90E+01 1.30E+02 SE L9358-07 5/26/2005 Ce-144 -1.02E+02 8.40E+01 3.OOE+02 SE L9358-07 5/26/2005 Co-57 -1.OOE+01 1.OOE+01 3.70E+01 SE L9358-07 5/26/2005 Co-58 -2.30E+01 1.70E+01 7.1OE+01 SE L9358-07 L9358-07 5/26/2005 5/26/2005 Co-60 Cr-51 1.80E+01

-2.80E+02 1.IOE+01 2.40E+02 3.70E+01 9.20E+02 L H?

SE SE L9358-07 5/26/2005 Cs-134 7.OOE+00 1.40E+01 4.90E+01 SE L9358-07 5/26/2005 Cs-1 37 2.OOE+01 1.40E+01 4.70E+01 SE L9358-07 5/26/2005 Fe-59 -9.OOE+01 6.90E+01 2.70E+02 SE L9358-07 5/26/2005 1-131 -2.40E+02 3.60E+02 1.40E+03 L9358-07 5/26/2005 K-40 2.13E+04 8.30E+02 4.20E+02 SE SE SE L9358-07 L9358-07 5/26/2005 5/26/2005 La-140 Mn-54

-5.20E+02

-1.40E+01 2.OOE+02 1.80E+01 8.40E+02 7.OOE+01 U

SE L9358-07 5/26/2005 Nb-95 1.80E+01 2.90E+01 I.OOE+02 1

SE L9358-07 5/26/2005 Ru-103 -1.OOE+01 2.30E+01 8.70E+01

-6.OOE+01 1.40E+02 5.30E+02 U SE L9358-07 5/26/2005 Ru-1 06 SE L9358-07 5/26/2005 Sb-124 7.50E+01 3.1OE+01 3.40E+01 SE L9358-07 5/26/2005 Sb-125 -2.70E+01 3.50E+01 1.30E+02 SE L9358-07 5/26/2005 Se-75 2.OOE+00 1.90E+01 6.60E+01 SE L9358-07 5/26/2005 Zn-65 4.80E+01 6.20E+01 2.OOE+02 SE L9358-07 5/26/2005 Zr-95 -1.80E+01 2.80E+01 1.30E+02 SE L9358-08 5/26/2005 AcTh-228 1.96E+02 8.80E+01 2.80E+02 SE L9358-08 5/26/2005 Ag-108m 6.OOE+00 1.1OE+01 4.OOE+01 SE L9358-08 5/26/2005 Ag-1I Om 8.00E+0O 1.60E+01 6.1OE+01 SE L9358-08 5/26/2005 Ba-140 2.50E+02 3.80E+02 1.40E+03 SE L9358-08 5/26/2005 Be-7 3.20E+02 1.80E+02 6.OOE+02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-147-

L Seabrook Station Radiological Environmental MonitoringProgram Data - 2005 END CONC STD.DEV. MDC L SAMPLE TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCVikg' SE 8 L9358-08 5/26/2005 Ce-141 2.OOE+01 3.90E+01 1.30E+02 L SE SE 8

8 L9358-08 5/26/2005 L9358-08 5/26/2005 Ce-144 Co-57

-2.20E+01

-2.0OE+O0 6.60E+01 7.70E+00 2.40E+02 2.80E+01 SE 8 L9358-08 5/26/2005 Co-58 -5.0OE+OO 2.1OE+01 8.00E+Ol L SE SE 8 8

8 L9358-08 5/26/2005 L9358-08 5/26/2005 L9358-08 5/26/2005 Co-60 Cr-51 Cs-1 34 2.50E+01

-3.70E+02 O.OOE+O0 1.50E+01 2.60E+02 1.1OE+01 4.90E+Ol I.OOE+03 4.30E+O 1 SE 1.30E+01 4.90E+01 L SE SE SE 8

8 8

L9358-08 5/26/2005 L9358-08 5/26/2005 L9358-08 5/26/2005 Cs-1 37 Fe-59 1-131 7.OOE+00 8.50E+01 2.0OE+02 7.OOE+01 3.60E+02 2.40E+02 1.30E+03 SE 8 L9358-08 5/26/2005 K-40 2.16E+04 9.20E+02 5.60E+02 L SE SE 8

8 L9358-08 5/26/2005 L9358-08 5/26/2005 La-140 Mn-54

-2.20E+02

-4.OOE+OO 2.30E+02 1.60E+01 8.90E+02 6.20E+01 SE 8 L9358-08 5/26/2005 Nb-95 -5.OOE+01 3.50E+01 1.40E+02 L SE SE 8

8 L9358-08 5/26/2005 L9358-08 5/26/2005 Ru-103 Ru-1 06 Sb-124 5.OOE+01

-8.OOE+01 1.50E+01 2.30E+01 1.20E+02 4.60E+01 7.20E+01 4.90E+02 1.80E+02 SE 8 L9358-08 5/26/2005 U SE SE SE 8

8 8

L9358-08 5/26/2005 L9358-08 5/26/2005 L9358-08 5/26/2005 Sb-125 Se-75 Zn-65

-5.OOE+OO

-1.90E+01

-5.70E+01 3.50E+01 1.70E+01 4.90E+01 1.30E+02 6.50E+01 1.90E+02 8 L9358-08 5/26/2005 Zr-95 -1.60E+01 3.10E+01 1.40E+02 U SE SE SE 8 8 L9358-09 5/26/2005 L9358-09 5/26/2005 AcTh-228 Ag-108m 3.08E+02

-1.60E+01 7.90E+01 1.30E+01 3.OOE+02 5.30E+01 SE 8 L9358-09 5/26/2005 Ag-11Om 2.90E+01 2.80E+01 9.80E+01 L SE SE 8

8 L9358-09 5/26/2005 L9358-09 5/26/2005 Ba-140 Be-7 O.OOE+00 6.OOE+01 4.50E+02 2.10E+02 1.70E+03 7.60E+02 SE 8 L9358-09 5/26/2005 Ce-141 -1.06E+02 5.20E+01 2.OOE+02 11 SE SE 8

8 8

L9358-09 5/26/2005 L9358-09 5/26/2005 L9358-09 5/26/2005 Ce-1 44 Co-57 Co-58

-3.OOE+01 2.80E+01 2.50E+01 1.1OE+02 1.40E+01 2.90E+01 3.70E+02 4.60E+01 9.90E+01 SE SE 8 L9358-09 5/26/2005 Co-60 3.0OE+OO 2.30E+01 8.60E+01 SE 8 L9358-09 5/26/2005 Cr-51 2.40E+02 3.60E+02 1.20E+03 SE 8 L9358-09 5/26/2005 Cs-134 -3.0OE+OO 1.70E+01 6.50E+01 SE 8 L9358-09 5/26/2005 Cs-1 37 -2.60E+01 2.1OE+01 8.30E+01 SE 8 L9358-09 5/26/2005 Fe-59 1.38E+02 8.40E+01 2.70E+02 SE 8 L9358-09 5/26/2005 1-131 -1.30E+02 5.OOE+02 1.90E+03 SE 8 L9358-09 5/26/2005 K-40 2.11E+04 9.90E+02 8.30E+02 SE 8 L9358-09 5/26/2005 La-140 O.OOE+00 2.70E+02 I.OOE+03 SE 8 L9358-09 5/26/2005 Mn-54 -1.70E+01 1.40E+01 6.IOE+01 SE 8 L9358-09 5/26/2005 Nb-95 -6.40E+01 3.90E+01 1.60E+02 SE 8 L9358-09 5/26/2005 Ru-1 03 -9.OOE+OO 3.1OE+01 1.20E+02 SE 8 L9358-09 5/26/2005 Ru-106 -3.OOE+02 1.60E+02 6.80E+02 SE 8 L9358-09 5/26/2005 Sb-1 24 6.90E+01 4.90E+01 9.40E+02 SE 8 L9358-09 5/26/2005 Sb-125 6.20E+01 4.60E+01 1.50E+02 SE 8 L9358-09 5/26/2005 Se-75 -6.OOE+00 2.20E+01 7.90E+01 SE 8 L9358-09 5/26/2005 Zn-65 -1.51 E+02 5.80E+01 2.50E+02 SE 8 L9358-09 5/26/2005 Zr-95 -7.30E+01 3.90E+01 1.80E+02 SE 8 L10203-0711/21/2005 AcTh-228 3.22E+02 5.80E+01 1.90E+02 SE 8 L10203-0711/21/200s Ag-108m 8.30E+00 9.30E+00 3.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-148-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE SE SE 8

8 8

L10203-0711/21/2005 L10203-0711/21/2005 L10203-0711/21/2005 Ag-1I0m Ba-140 Be-7 2.90E+01 5.50E+01 1.OOE+01 1.50E+01 5.OOE+01 8.80E+01 4.80E+01 1.70E+02 3.10E+02 I

SE 8 L10203-0711/21/2005 Ce-141 -9.OOE+00 1.40E+01 4.90E+01 SE 8 L10203-0711/21/2005 Ce-144 3.20E+01 5.20E+01 1.80E+02 SE 8 L10203-0711/21/2005 Co-57 -1.90E+00 6.60E+00 2.30E+01 SE 8 L10203-0711/21/2005 Co-58 -5.OOE+00 1.20E+01 4.40E+01 SE SE SE 8

8 8

L10203-0711/21/2005 L10203-0711/21/2005 L10203-0711/21/2005 Co-60 Cr-51 Cs-134 1.OOE+00 8.IOE+01

-6.80E+00 1.20E+01 7.80E+01 9.30E+00 4.60E+01 2.60E+02 3.50E+01 H

SE 8 L10203-0711/21/2005 Cs-137 -1.20E+01 1.10E+01 4.10E+01 SE 8 L10203-0711/21/2005 Fe-59 -7.OOE+00 2.80E+01 I.OOE+02 SE 8 L10203-0711/21/2005 1-131 -4.OOE+00 1.70E+01 6.30E+01 SE 8 L10203-0711/21/2005 K-40 1.70E+04 6.10E+02 4.60E+02 '

SE 8 L10203-0711/21/2005 La-140 3.OOE+00 2.60E+01 9.30E+01 SE 8 L10203-0711/21/2005 Mn-54 1.OOE+00 1.20E+01 4.20E+01 SE 8 L10203-0711/21/2005 Nb-95 8.OOE+00 1.40E+01 4.70E+01 SE 8 L10203-0711/21/2005 Ru-103 -i.OOE+00 1.10E+01 4.OOE+01 SE 8 L10203-0711/21/2005 Ru-106 3.50E+01 9.20E+01 3.30E+02 L SE 8 L10203-0711/21/2005 Sb-124 -4.OOE+01 1.90E+01 9.60E+01 SE 8 L10203-0711/21/2005 Sb-125 -2.OOE+01 2.70E+01 9.90E+01 SE 8 L10203-0711/21/2005 Se-75 5.OOE+00 1.20E+01 4.10E+01 U SE 8 L10203-0711/21/2005 Zn-65 -9.90E+01 3.40E+01 1.40E+02 SE 8 L10203-0711/21/2005 Zr-95 -1.OOE+00 1.70E+01 7.20E+01 SE 8 L10203-0811/21/2005 AcTh-228 3.01E+02 6.90E+01 2.IOE+02 SE 8 L10203-0811/21/2005 Ag-108m 7.OOE+00 1.OOE+01 3.40E+01 SE 8 L10203-0811/21/2005 Ag-110m 2.OOE+00 1.60E+01 5.90E+01 SE 8 L10203-0811/21/2005 Ba-140 -5.80E+01 5.70E+01 2.20E+02 7 SE 8 L10203-0811/21/2005 Be-7 1.00E+01 9.40E+01 3.30E+02 i SE 8 L10203-0811/21/2005 Ce-141 -9.OOE+00 1.70E+01 5.90E+01 SE SE SE 8

8 8

L10203-0811/21/2005 L10203-0811/21/2005 L10203-0811/2112005 Ce-144 Co-57 Co-58 5.40E+01 2.OOE-01

-5.0OE+00 6.30E+01 8.60E+00 1.IOE+01 2.IOE+02 3.OOE+01 4.IOE+0I L

SE SE SE 8

8 8

L10203-0811/21/2005 L10203-0811/21/2005 L10203-0811/21/2005 Co-60 Cr-51 Cs-134 2.20E+01

-8.OOE+01

-4.OOE+00 1.40E+01 1.OOE+02 1.90E+01 4.80E+01 3.70E+02 6.60E+01 H

SE 8 L10203-0811/21/2005 Cs-137 3.OOE+00 1.20E+01 4AOE+O1 SE 8 L10203-0811/21/2005 Fe-59 4.40E+01 3.50E+01 1.20E+02 SE 8 L10203-0811/21/2005 1-131 1.70E+01 2.IOE+01 7.20E+01 SE 8 L10203-0811/21/2005 K-40 2.09E+04 6.80E+02 5.20E+02 SE 8 L10203-0811/21/2005 La-140 -1.60E+01 3.20E+01 1.20E+02 SE 8 L10203-0811/21/2005 Mn-54 8.OOE+00 1.IOE+01 4.OOE+01 L SE 8 L10203-0811/21/2005 Nb-95 -2.10E+01 1.20E+01 4.70E+01 SE 8 L10203-0811/21/2005 Ru-103 5.OOE+O0 1.00E+O1 3.70E+01 SE 8 L10203-0811/21/2005 Ru-106 8.OOE+01 1.10E+02 3.80E+02 SE 8 L10203-0811/21/2005 Sb-124 -2.30E+01 1.40E+01 7.50E+01 SE 8 L10203-0811/21/2005 Sb-125 O.OOE+O0 2.80E+01 1.OOE+02 SE 8 L10203-0811/21/2005 Se-75 -1.90E+01 1.20E+01 4.60E+01 Lj SE 8 L10203-0811/21/2005 Zn-65 -4.OOE+00 3.30E+01 1.20E+02

' Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-149-iJ

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 8 L10203-0811121/2005 Zr-95 -5.00E+00 1.80E+01 7.40E+OI SE 8 L10203-0911121/2005 AcTh-228 2.33E+02 4.50E+01 1.80E+O:'

SE 8 L10203-0911/21/2005 Ag-108m O.OOE+OO 9.OOE+00 3.20E+OI SE 8 L10203-0911121/2005 Ag-110m 1.30E+01 1.80E+01 6.1OE+OI SE 8 L10203-0911121/2005 Ba-140 2.20E+01 5.60E+01 2.00E+O2 SE 8 L10203-0911121/2005 Be-7 -3.60E+01 9.50E+01 3.40E+0:7 SE 8 L10203-0911/21/2005 Ce-141 2.OOE+01 2.OOE+01 6.60E+O I SE 8 L10203-0911121/2005 Ce-144 1.13E+02 7.30E+01 2.40E+0:2 SE 8 L10203-0911/21/2005 Co-57 -8.00E+00 9.OOE+00 3.20E+OI SE 8 L10203-0911/21/2005 Co-58 -9.OOE+00 1.20E+01 4.30E+0I SE 8 L10203-0911121/2005 Co-60 O.OOE+OO 1.20E+01 4.40E+OI SE 8 L10203-0911/21/2005 Cr-51 1.50E+02 1.IOE+02 3.60E+0:2 SE 8 L10203-0911/21/2005 Cs-134 8.90E+00 9.70E+00 3.30E+OI SE 8 L10203-0911/21/2005 Cs-137 -5.00E+00 1.20E+01 4.40E+OI SE 8 L10203-0911/21/2005 Fe-59 9.OOE+00 3.OOE+01 1.OOE+0:2 SE 8 L10203-0911/21/2005 1-131 -2.IOE+01 2.IOE+01 7.60E+OI SE 8 L10203-0911/21/2005 K40 2.20E+04 6.20E+02 4.OOE+02 SE 8 L10203-0911/21/2005 La-140 2.10E+01 2.90E+01 1.OOE+02 SE 8 L10203-0911/21/2005 Mn-54 -6.OOE+00 1.20E+01 4.30E+01 SE 8 L10203-0911/21/2005 Nb-95 -1.80E+01 1.40E+01 5.40E+01 SE 8 L10203-0911/21/2005 Ru-103 -6.00E+00 1.30E+01 4.60E+01 SE 8 L10203-0911/21/2005 Ru-106 -1.OOE+01 1.10E+02 3.80E+02 SE 8 L10203-0911/21/2005 Sb-124 O.OOE+OO 1.40E+01 5.80E+01 SE 8 L10203-0911/21/2005 Sb-125 -1.90E+01 2.70E+01 9.90E+01 SE 8 L10203-0911/21/2005 Se-75 -9.OOE+00 1.40E+01 5.OOE+01 SE 8 L10203-0911/21/2005 Zn-65 3.80E+01 6.30E+01 2.IOE+02 SE 8 L10203-0911/21/2005 Zr-95 -3.OOE+01 1.70E+01 8.40E+01 SE 52 L9358-10 6/1/2005 AcTh-228 1.94E+03 8.10E+01 2.60E+02 SE 52 L9358-10 6/1/2005 Ag-108m -5.OOE+00 1.60E+01 5.50E+01 SE 52 L9358-10 6/1/2005 Ag-1I0m 1.20E+01 2.10E+01 7.40E+01 SE: 52 L9358-10 611/2005 Ba-140 -1.60E+02 3.30E+02 1.20E+03 SE. 52 L9358-10 6/1/2005 Be-7 1.50E+02 2.IOE+02 7.OOE+02 SE: 52 L9358-10 6/1/2005 Ce-141 1.16E+02 6.20E+01 2.OOE+02 SE 52 L9358-10 6/1/2005 Ce-144 1.80E+02 1.40E+02 4.70E+02 SE 52 L9358-10 6/1/2005 Co-57 -2.50E+01 1.80E+01 6.30E+01 SE. 52 L9358-10 6/1/2005 Co-58 -1.50E+01 2.OOE+01 7.40E+01 SE 52 L9358-10 6/1/2005 Co-60 4.0OE+00 1.70E+01 6.OOE+01 SE. 52 L9358-10 6/1/2005 Cr-51 2.OOE+01 3.30E+02 1.10E+C3 SE: 52 L9358-10 6/1/2005 Cs-134 1.OOE+00 1.40E+01 5.1OE+0-1 SE. 52 L9358-10 6/1/2005 Cs-137 -4.40E+01 1.80E+01 7.10E+01 SE 52 L9358-10 611/2005 Fe-59 4.70E+01 5.20E+01 1.80E+C2 SE 52 L9358-10 6/1/2005 1-131 7.OOE+01 3.10E+02 1.10E+C03 SE: 52 L9358-10 6/1/2005 K-40 1.14E+04 5.30E+02 6.30E+C,2 SE: 52 L9358-10 6/1/2005 La-140 -2.80E+02 2.10E+02 7.50E+C,2 SE. 52 L9358-10 6/1/2005 Mn-54 1.50E+01 1.90E+01 6.40E+Cl1 SE. 52 L9358-10 6/1/2005 Nb-95 -1.70E+01 5.30E+01 1.80E+02 SE 52 L9358-10 611/2005 Ru-I 03 -2.10E+01 2.60E+01 9.30E+CI1 SE. 52 L9358-10 611/2005 Ru-106 -1.OOE+01 1.50E+02 5.40E+(12 SE 52 L9358-10 6/1/2005 Sb-124 5.10E+01 3.60E+01 1.20E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-150-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCikg)

SE 52 L9358-10 6/1/2005 Sb-125 -5.40E+01 5.OOE+01 1.80E+02 SE 52 L9358-10 6/1/2005 Se-75 -3.OOE+00 2.50E+01 8.70E+01 SE 52 L9358-10 6/1/2005 Zn-65 -6.10E+01 8.60E+01 3.00E+02 SE 52 L9358-10 6/1/2005 Zr-95 -5.OOE+01 4.10E+01 1.50E+02 SE 52 L9358-11 6/1/2005 AcTh-228 6.78E+02 8.50E+01 2.90E+02

SE 52 L9358-11 6/1/2005 Ag-108m -6.OOE+00 1.50E+01 5.50E+01 SE 52 L9358-11 6/1/2005 Ag-110m -2.50E+01 2.30E+01 9.90E+01 SE 52 L9358-11 6/1/2005 Ba-140 4.OOE+02 3.70E+02 1.30E+03 SE 52 L9358-11 6/1/2005 Be-7 -9.OOE+01 1.90E+02 7.40E+02 SE 52 L9358-11 6/1/2005 Ce-141 7.80E+01 4.80E+01 1.60E+02 SE 52 L9358-11 6/1/2005 Ce-144 -5.20E+01 9.40E+01 3.40E+02 SE 52 L9358-11 6/1/2005 Co-57 2.OOE+00 1.10E+01 3.90E+01 SE 52 L9358-11 6/1/2005 Co-58 9.OOE+00 2.50E+01 9.10E+01 SE 52 L9358-11 6/1/2005 Co-60 1.20E+01 1.80E+01 6.90E+01 SE 52 L9358-11 6/1/2005 Cr-51 -1.OOE+02 2.80E+02 1.OOE+03 SE 52 L9358-11 6/1/2005 Cs-134 -3.OOE+00 1.50E+01 5.70E+01 SE 52 L9358-11 6/1/2005 Cs-137 -6.OOE+00 1.30E+01 5.50E+01 SE 52 L9358-11 6/1/2005 Fe-59 -3.70E+01 6.20E+01 2.50E+02 SE 52 L9358-11 6/1/2005 1-131 3.OOE+01 2.60E+02 9.50E+02 SE 52 L9358-11 6/1/2005 K-40 1.OOE+04 7.30E+02 8.30E+02 SE 52 L9358-11 6/1/2005 La-140 -2.OOE+02 2.OOE+02 2.10E+03 SE 52 L9358-11 6/1/2005 Mn-54 1.50E+01 1.90E+01 6.60E+01 SE 52 L9358-11 6/1/2005 Nb-95 -9.10E+01 4.30E+01 1.80E+02 SE 52 L9358-11 6/1/2005 Ru-103 -2.90E+01 2.80E+01 1.10E+02 SE 52 L9358-11 6/1/2005 Ru-106 -1.30E+02 1.60E+02 6.20E+02 SE 52 L9358-11 6/1/2005 Sb-124 -1.80E+01 4.10E+01 2.OOE+02 SE 52 L9358-11 6/1/2005 Sb-125 -3.60E+01 4.80E+01 1.80E+02 SE 52 L9358-11 6/1/2005 Se-75 8.00E+00 2.OOE+01 7.10E+01 SE 52 L9358-11 6/1/2005 Zn-65 -3.OOE+01 1.10E+02 3.90E+02 SE 52 L9358-11 6/1/2005 Zr-95 5.OOE+00 4.20E+01 1.70E+02 SE 52 L9358-12 6/1/2005 AcTh-228 8.51E+02 9.10E+01 2.80E+02

SE 52 L9358-12 6/1/2005 Ag-108m -1.00E+01 1.50E+01 5.70E+01 L SE 52 L9358-12 6/1/2005 Ag-110m -5.OOE+00 2.70E+01 1.00E+02 SE 52 L9358-12 6/1/2005 Ba-140 2.20E+02 4.1OE+02 1.40E+03 SE 52 L9358-12 6/1/2005 Be-7 -2.50E+02 2.OOE+02 7.90E+02 J SE 52 L9358-12 6/1/2005 Ce-141 1.OOE+00 5.30E+01 1.80E+02 SE 52 L9358-12 6/1/2005 Ce-144 -1.00E+02 1.20E+02 4.20E+02 SE 52 L9358-12 6/1/2005 Co-57 -2.OOE+00 1.50E+01 5.10E+01 l SE 52 L9358-12 6/1/2005 Co-58 -3.20E+01 2.OOE+01 8.90E+01 U SE 52 L9358-12 6/1/2005 Co-60 -1.90E+01 1.90E+01 8.40E+01 SE 52 L9358-12 6/1/2005 Cr-51 -2.90E+02 3.10E+02 1.20E+03 SE 52 L9358-12 6/1/2005 Cs-134 -5.OOE+00 1.90E+01 7.OOE+01 LU SE 52 L9358-12 6/1/2005 Cs-137 -3.90E+01 2.10E+01 8.60E+01 SE 52 L9358-12 6/1/2005 Fe-59 1.20E+01 6.20E+01 2.30E+02 SE 52 L9358-12 6/1/2005 1-131 -1.50E+02 3.20E+02 1.20E+03 1L, SE 52 L9358-12 6/1/2005 K-40 1.10E+04 7.40E+02 7.60E+02

SE 52 L9358-12 6/1/2005 La-140 3.OOE+01 2.OOE+02 7.40E+02 SE 52 L9358-12 6/1/2005 Mn-54 2.80E+01 1.80E+01 5.70E+01 J SE 52 L9358-12 6/1/2005 Nb-95 5.70E+01 3.40E+01 1.10E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement L

-151- II L

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

L9358-12 6/1/2005 Ru-103 8.00E+00 3.10E+01 1.10E+02 L SE SE SE 52 52 52 L9358-12 L9358-12 6/1/2005 Ru-106 6/1/2005 Sb-124

-4.70E+02 1.70E+01 2.OOE+02 3.OOE+01 8.30E+02 1.30E+02 SE 52 L9358-12 6/1/2005 Sb-125 9.00E+00 5.20E+01 1.90E+02 l SE 52 L9358-12 6/1/2005 Se-75 -5.00E+00 2.20E+01 7.90E+01 SE 52 L9358-12 6/1/2005 Zn-65 -8.00E+01 1.00E+02 3.70E+0:>

SE 52 L9358-12 6/1/2005 Zr-95 4.60E+01 4.00E+01 1.70E+02 SE 52 L10203-1011/21/2005 AcTh-228 2.81E+03 8.20E+01 2.50E+0:2 1 SE 52 L10203-1011/21/2005 Ag-108m 3.20E+01 1.60E+01 5.30E+01 SE 52 L10203-1011/21/2005 Ag-110m 1.90E+01 1.80E+01 6.20E+01 U SE SE SE 52 52 52 L10203-1011/21/2005 Ba-140 L10203-1011/21/2005 Be-7 L10203-1011/21/2005 Ce-141 2.07E+02 1.00E+01 1.06E+02 8.80E+01 1.60E+02 3.80E+01 2.80E+02 5.30E+02 1.20E+02 SE 52 L10203-1011/21/2005 Ce-144 -7.00E+01 2.60E+02 8.60E+02 L SE 52 L10203-1011/21/2005 Co-57 Co-58 8.OOE+00

-4.20E+01 1.90E+01 1.70E+01 6.20E+01 6.30E+01 SE 52 L10203-1011/21/2005 SE 52 L10203-1011/21/2005 Co-60 -8.OOE+00 1.60E+01 5.70E+01 SE 52 L10203-1011/21/2005 Cr-51 -6.OOE+01 1.90E+02 6.40E+02 SE 52 L10203-1011/21/2005 Cs-134 0.00E+00 1.50E+01 5.20E+01 SE 52 L10203-1011/21/2005 Cs-137 -7.00E+00 1.90E+01 6.60E+01 U SE SE SE 52 52 52 L10203-1011/21/2005 Fe-59 L10203-1011/21/2005 1-131 L10203-1011/21/2005 K-40

-6.40E+01 6.00E+00 1.12E+04 2.90E+01 3.60E+01 4.40E+02 1.10E+02 1.20E+02 5.20E+02 U SE SE SE 52 52 52 L10203-1011/21/2005 La-140 L10203-1011/21/2005 Mn-54 L10203-1011/21/2005 Nb-95

-3.80E+01 2.70E+01

-6.40E+01 4.90E+01 1.60E+01 3.20E+01 1.70E+02 5.30E+01 1.102+02 SE 52 L10203-1011/21/2005 Ru-103 2.20E+01 1.80E+01 5.90E+01 SE 52 L10203-1011/21/2005 Ru-106 1.30E+02 1.50E+02 4.90E+02 SE 52 L10203-1011/21/2005 Sb-124 -5.40E+01 2.50E+01 1.10E+02 SE 52 L10203-1011/21/2005 Sb-125 2.30E+01 5.20E+01 1.80E+02 SE 52 L10203-1011/21/2005 Se-75 -7.10E+01 2.50E+01 8.90E+01 L SE 52 52 L10203-1011/21/2005 Zn-65 L10203-1011/21/2005 Zr-95 9.40E+01 1.60E+01 7.10E+01 6.30E+01 2.40E+02 2.40E+02 SE SE 52 Li 0203-1111/21/2005 AcTh-228 1.39E+03 6.60E+01 2.20E+02 SE 52 L10203-1111/21/2005 Ag-108m 1.00E+00 1.30E+01 4.50E+01 SE 52 L10203-1111/21/2005 Ag-110m -4.00E+00 1.90E+01 6.70E+01 SE 52 L10203-1111/21/2005 Ba-140 9.50E+01 8.10E+01 2.70E+02 SE 52 L10203-1111/21/2005 Be-7 0.00E+00 1.20E+02 4.30E+02 SE 52 L10203-1111/21/2005 Ce-141 8.00E+00 2.70E+01 8.90E+01 SE. 52 L10203-1111/21/2005 Ce-144 -5.00E+01 1.00E+02 3.50E+02 SE 52 L10203-1111/21/2005 Co-57 -6.00E+00 1.30E+01 4.30E+01 SE" 52 L10203-1111/21/2005 Co-58 -2.50E+01 1.30E+01 5.10E+C1 SE. 52 L10203-1111/21/2005 Co-60 -2.30E+01 1.40E+01 5.40E+C01 SE: 52 L10203-1111/21/2005 Cr-51 -1.20E+02 1.40E+02 4.80E+02 SE: 52 L10203-1111/21/2005 Cs-134 2.10E+01 1.40E+01 4.60E+01 SE: 52 L10203-1111/21/2005 Cs-137 -2.70E+01 1.60E+01 6.00E+01 SE. 52 L10203-1111/21/2005 Fe-59 -6.00E+00 2.80E+01 1.00E+02 SE. 52 L10203-1111/21/2005 1-131 2.40E+01 2.70E+01 9.10E+01 SE. 52 L10203-1111/21/2005 K-40 1.17E+04 4.80E+02 5.50E+02C

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-152-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 52 L10203-1111/21/2005 La-140 -8.20E+01 3.80E+01 1.40E+02 SE 52 L10203-1111/21/2005 Mn-54 7.00E+00 1.60E+01 5.50E+01 SE 52 L10203-1111/21/2005 Nb-95 -3.20E+01 2.50E+01 8.80E+01 SE 52 L10203-1111/21/2005 Ru-103 8.OOE+00 1.40E+01 4.90E+01 SE 52 L10203-1111/21/2005 Ru-O06 5.00E+01 1.30E+02 4.50E+02 SE 52 L10203-1111121/2005 Sb-124 1.40E+01 2.10E+01 7.60E+01 SE 52 L10203-111112112005 Sb-125 -5.70E+01 3.70E+01 1.40E+02 SE 52 L10203-1111/21/2005 Se-75 -1.50E+01 2.OOE+01 7.10E+01 SE 52 L10203-1111/21/2005 Zn-65 1.30E+01 6.50E+01 2.20E+02 SE 52 L10203-1111/21/2005 Zr-95 4.30E+01 2.60E+01 8.40E+01 SE 52 L10203-1211/21/2005 AcTh-228 1.29E+03 6.30E+01 1.90E+02

SE 52 L10203-1211/21/2005 Ag-108m -3.OOE+OO 1.20E+01 4.20E+01 SE 52 L10203-1211/21/2005 Ag-110m 1.30E+01 1.70E+01 5.90E+01 SE 52 L10203-1211/21/2005 Ba-140 O.0OE+OO 7.30E+01 2.60E+02 SE 52 L10203-1211/21/2005 Be-7 5.OOE+01 1.20E+02 4.20E+02 SE 52 L10203-1211/21/2005 Ce-141 2.50E+01 2.10E+01 7.OOE+O1 SE 52 L10203-1211/21/2005 Ce-144 2.60E+01 7.60E+01 2.60E+02 SE 52 L10203-1211/21/2005 Co-57 5.40E+00 9.40E+00 3.20E+01 SE 52 L10203-1211/21/2005 Co-58 -2.0OE+OO 1.40E+01 4.90E+01 SE 52 L10203-1211/21/2005 Co-60 1.10E+01 1.60E+01 5.70E+01 SE 52 L10203-1211t21/2005 Cr-51 -7.OOE+01 1.20E+02 4.10E+02 SE 52 L10203-1211/21/2005 Cs-134 2.00E+00 1.20E+01 4.40E+01 L SE 52 L10203-1211/21/2005 Cs-137 3.00E+00 1.50E+01 5.20E+01 SE 52 L10203-1211/21/2005 Fe-59 -1.80E+01 3.OOE+01 I.IOE+02 SE 52 L10203-1211/21/2005 1-131 -2.20E+01 2.20E+01 8.20E+01 SE 52 L10203-1211/21/2005 K-40 1.23E+04 5.40E+02 6.1OE+02 SE 52 L10203-1211121/2005 La-140 5.IOE+OI 3.90E+01 1.30E+02 SE 52 L10203-1211/21/2005 Mn-54 2.60E+01 1.50E+01 4.80E+01 SE 52 L10203-1211/21/2005 Nb-95 -2.90E+01 1.90E+01 7.20E+01 SE 52 L10203-1211/21/2005 Ru-103 -9.OOE+0O 1.30E+01 4.80E+01 SE 52 L10203-1211/21/2005 Ru-106 2.50E+02 1.10E+02 3.60E+02 SE 52 L10203-1211/21/2005 Sb-124 -4.70E+01 3.30E+01 1.40E+02 SE 52 L10203-1211/21/2005 Sb-125 0.OOE+OO 4.IOE+01 1.40E+02 SE 52 L10203-1211/21/2005 Se-75 -1.30E+01 1.60E+01 5.70E+01 SE 52 L10203-1211/21/2005 Zn-65 2.0OE+01 6.50E+01 2.20E+02 SE 52 L10203-1211/21/2005 Zr-95 7.IOE+01 2.90E+01 9.OOE+01 SE 57 L9358-13 5/26/2005 AcTh-228 3.23E+02 5.50E+01 2.00E+02 SE 57 L9358-13 5/26/2005 Ag-108m -2.30E+00 7.90E+00 3.OOE+01 SE 57 L9358-13 5/26/2005 Ag-110m 1.50E+01 1.70E+01 5.80E+01 L SE 57 L9358-13 5/26/2005 Ba-140 0.OOE+0O 3.20E+02 1.20E+03 SE 57 L9358-13 5/26/2005 Be-7 -2.0OE+O1 1.40E+02 5.30E+02 f SE 57 L9358-13 5/26/2005 Ce-141 -1.40E+01 3.10E+01 1.IOE+02 U SE 57 L9358-13 5/26/2005 Ce-144 -8.20E+01 5.20E+01 2.OOE+02 SE 57 L9358-13 5/26/2005 Co-57 1.30E+00 6.30E+00 2.20E+01 SE 57 L9358-13 5/26/2005 Co-58 -1.90E+01 1.70E+01 6.90E+01 SE 57 L9358-13 5/26/2005 Co-60 -2.80E+01 1.40E+01 6.30E+01 SE 57 L9358-13 5/26/2005 Cr-51 -1.90E+02 2.OOE+02 7.40E+02 SE 57 L9358-13 5/26/2005 Cs-1 34 -4.50E+00 9.40E+00 3.60E+01 SE 57 L9358-13 5/26/2005 Cs-137 0.OOE+00 1.10E+01 4.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-153-

LI Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 57 L9358-13 5/26/2005 Fe-59 2.40E+01 4.50E+01 1.60E+02 SE 57 L9358-13 5/26/2005 1-131 2.50E+02 2.90E+02 1.OOE+0, SE 57 L9358-13 5/26/2005 K-40 1.33E+04 6.30E+02 3.90E+02 SE 57 L9358-13 5/26/2005 La-140 2.1OE+02 1.60E+02 5.20E+02 SE 57 L9358-13 5/26/2005 Mn-54 -3.90E+01 1.50E+01 6.30E+01 SE 57 L9358-13 5/26/2005 Nb-95 -3.50E+01 2.30E+01 9.60E+01 SE 57 L9358-13 5/26/2005 Ru-103 -5.00E+00 1.70E+01 6.60E+0, SE 57 L9358-13 5/26/2005 Ru-1 06 3.20E+01 9.30E+01 3.40E+0.!

L SE 57 L9358-13 5/26/2005 Sb-124 1.20E+01

-4.00E+00 2.60E+01 2.90E+01 1.10E+0;!

1.10E+0;2 SE 57 L9358-13 5/26/2005 Sb-125 1.40E+01 4.90E+01 U SE SE SE 57 57 57 L9358-13 5/26/2005 Se-75 L9358-13 5/26/2005 Zn-65 L9358-13 5/26/2005 Zr-95 3.00E+00

-1.35E+02

-3.60E+01 4.20E+01 2.60E+01 1.80E+0:'

1.30E+0:'

2.30E+0:'

L SE SE SE 57 57 57 L9358-14 5/26/2005 AcTh-228 L9358-14 5/26/2005 Ag-108m L9358-14 5/26/2005 Ag-11Om 2.40E+02

-1.24E+01

-3.20E+01 5.90E+01 9.90E+00 2.20E+01 3.90E+01 8.90E+01 SE 57 L9358-14 5/26/2005 Ba-140 -1.10E+02 3.30E+02 1.30E+03 SE 57 L9358-14 5/26/2005 Be-7 2.20E+02 1.50E+02 4.80E+0:'

SE 57 L9358-14 5/26/2005 Ce-141 6.80E+01 3.50E+01 1.IOE+0:'

SE 57 L9358-14 5/26/2005 Ce-144 0.00E+00 7.00E+01 2.50E+0:'

SE 57 L9358-14 5/26/2005 Co-57 -8.00E-01 9.20E+00 3.20E+0I SE 57 L9358-14 5/26/2005 Co-58 1.90E+01 2.IOE+01 7.40E+0I SE 57 L9358-14 5/26/2005 Co-60 -3.60E+01 1.60E+01 7.30E+0'I SE 57 L9358-14 5/26/2005 Cr-51 8.00E+01 2.40E+02 8.40E+0:'

U SE SE 57 57 L9358-14 L9358-14 5/26/2005 5/26/2005 Cs-134 Cs-137 1.OOE+00 0.00E+00 1.30E+01 1.20E+01 4.80E+01 4.40E+01 1.90E+0:2 SE 57 L9358-14 5/26/2005 Fe-59 -2.80E+01 4.90E+01 SE 57 L9358-14 5/26/2005 1-131 0.00E+00 3.10E+02 1.20E+0:3 SE 57 L9358-14 5/26/2005 K-40 1.42E+04 7.IOE+02 5.90E+0:2 1.90E+02 7.30E+0:2 U SE SE SE 57 57 57 L9358-14 5/26/2005 La-140 L9358-14 5/26/2005 Mn-54 L9358-14 5/26/2005 Nb-95

-1.70E+02

-1.00E+00

-1.70E+01 1.40E+01 2.80E+01 5.20E+01 1.10E+02 SE 57 L9358-14 5/26/2005 Ru-103 6.00E+00 2.40E+01 8.60E+01 SE 57 L9358-14 5/26/2005 Ru-106 2.00E+01 1.30E+02 4.80E+02 L SE 57 L9358-14 5/26/2005 Sb-124 L9358-14 5/26/2005 Sb-125

-5.40E+01 5.20E+01 3.80E+01 3.40E+01 1.90E+02 1.10E+02 SE 57 SE 57 L9358-14 5/26/2005 Se-75 8.00E+00 1.40E+01 5.00E+01 SE 57 L9358-14 5/26/2005 Zn-65 0.00E+00 4.20E+01 1.50E+02 SE 57 L9358-14 5/26/2005 Zr-95 -1.60E+01 2.70E+01 1.30E+02 SE 57 L9358-15 5/26/2005 AcTh-228 2.61 E+02 6.50E+01 2.60E+02 SE 57 L9358-15 5/26/2005 Ag-108m -8.00E+00 9.80E+00 3.90E+01 SE 57 L9358-15 5/26/2005 Ag-110m 2.60E+01 2.00E+01 6.80E+01 SE 57 L9358-15 5/26/2005 Ba-140 -1.30E+02 3.50E+02 1.402+03 SE 57 L9358-15 5/26/2005 Be-7 1.50E+02 1.60E+02 5.60E+02 SE 57 L9358-15 5/26/2005 Ce-141 -3.30E+01 3.70E+01 1.30E+02 SE 57 L9358-15 5/26/2005 Ce-144 2.90E+01 6.30E+01 2.20E+02 SE 57 L9358-15 5/26/2005 Co-57 -7.80E+00 8.00E+00 3.00E+01 SE 57 L9358-15 5/26/2005 Co-58 1.80E+01 1.90E+01 6.70E+01 SE 57 L9358-15 5/26/2005 Co-60 8.00E+00 1.90E+01 7.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-154-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 %I-'

SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

SE 57 L9358-15 5/26/2005 Cr-51 -1.90E+02 2.20E+02 8.60E+02 SE 57 L9358-15 5/2612005 Cs-134 -1.OOE+01 1.10E+01 4.40E+01 SE 57 L9358-15 5/2612005 Cs-137 -1.70E+01 1.30E+01 5.60E+01 SE 57 L9358-15 5/26/2005 Fe-59 -2.20E+01 6.10E+01 2.40E+02 SE 57 L9358-15 5/26/2005 1-131 3.O0E+01 3.50E+02 1.30E+03 SE 57 L9358-15 5/26/2005 K-40 1.36E+04 7.60E+02 6.50E+02

SE 57 L9358-15 5/26/2005 La-140 -1.30E+02 2.10E+02 8.10E+02 SE 57 L9358-15 5126/2005 Mn-54 -2.70E+01 1.90E+01 7.70E+01 SE 57 L9358-15 5/26/2005 Nb-95 1.30E+01 2.90E+01 1.OOE+02 SE 57 L9358-15 5/26/2005 Ru-103 -1.10E+01 2.30E+01 8.90E+01 SE 57 L9358-15 5/26/2005 Ru-106 7.OOE+01 1.20E+02 4.30E+02 SE 57 L9358-15 5/26/2005 Sb-124 -1.60E+01 3.60E+01 1.70E+02 SE 57 L9358-15 5/26/2005 Sb-125 2.50E+01 3.30E+01 1.20E+02 SE 57 L9358-15 5/26/2005 Se-75 0.O0E+00 1.70E+01 6.10E+01 SE 57 L9358-15 5/26/2005 Zn-65 -3.OOE+01 4.30E+01 1.70E+02 SE 57 L9358-15 5/26/2005 Zr-95 -2.10E+01 2.90E+01 1.30E+02 SE 57 L10203-1311/22/2005 AcTh-228 3.80E+02 5.OOE+01 1.90E+02

SE 57 L10203-1311/22/2005 Ag-108m -7.OOE+00 1.OOE+01 3.70E+01 SE 57 L10203-1311/22/2005 Ag-110m -8.OOE+00 1.60E+01 5.90E+01 SE 57 L10203-1311/22/2005 Ba-140 3.O0E+00 1.10E+01 4.50E+01 SE 57 L10203-1311/2212005 Be-7 1.90E+01 8.30E+01 2.90E+02 SE 57 L10203-1311/22/2005 Ce-141 6.OOE+00 1.70E+01 5.80E+01 SE 57 L10203-1311/22/2005 Ce-144 8.OOE+00 6.80E+01 2.30E+02 SE 57 L10203-1311/22/2005 Co-57 6.70E+00 7.90E+00 2.70E+01 SE 57 L10203-1311/22/2005 Co-58 -9.OOE+00 1.10E+01 4.10E+01 SE 57 L10203-1311/22/2005 Co-60 -7.0OE+00 1.70E+01 6.30E+01 SE 57 L10203-1311/22/2005 Cr-51 9.OOE+01 I.IOE+02 3.70E+02 SE 57 L10203-1311/22/2005 Cs-134 2.IOE+01 1.30E+01 4.20E+01 SE 57 L10203-1311/22/2005 Cs-137 -3.O0E+00 1.20E+01 4.40E+01 L SE 57 L10203-1311/22/2005 Fe-59 1.70E+01 2.70E+01 9.60E+01 SE 57 L10203-1311/22/2005 1-131 5.OOE+00 1.80E+01 6.30E+01 SE 57 L10203-1311/22/2005 K-40 1.31E+04 5.40E+02 4.50E+02

L SE 57 L10203-1311/22/2005 La-140 4.OOE+00 1.30E+01 5.20E+01 SE 57 L10203-1311/22/2005 Mn-54 -6.OOE+00 1.10E+01 4.OOE+01 SE 57 L10203-1311/22/2005 Nb-95 -1.10E+01 1.30E+01 4.90E+01 SE 57 L10203-1311/22/2005 Ru-103 1.0OE+00 1.10E+01 4.OOE+01 SE 57 L10203-1311/22/2005 Ru-106 -1.57E+02 9.70E+01 3.80E+02 SE 57 L10203-1311/22/2005 Sb-124 -1.10E+01 1.60E+01 7.20E+01 SE 57 L10203-1311/22/2005 Sb-125 -1.40E+01 3.20E+01 1.1OE+02 4 SE 57 L10203-1311/22/2005 Se-75 7.OOE+00 1.20E+01 4.20E+01 SE 57 L10203-1311/22/2005 Zn-65 -7.20E+01 3.10E+01 1.20E+02 SE 57 L10203-1311/22/2005 Zr-95 2.10E+01 2.1OE+01 7.OOE+01 SE 57 L10203-1411/22/2005 AcTh-228 4.01E+02 4.80E+O 1.70E+02

SE 57 L10203-1411/22/2005 Ag-108m -1.01E+01 8.70E+00 3.20E+01 SE 57 L10203-1411/22/2005 Ag-11Om -3.OOE+00 1.50E+01 5.50E+01 SE 57 L10203-1411/22/2005 Ba-140 2.OOE+00 5.90E+01 2.10E+02 L SE 57 L10203-1411/22/2005 Be-7 6.OOE+01 8.50E+01 2.90E+02 SE 57 L10203-1411/22/2005 Ce-141 2.60E+01 2.OOE+01 6.50E+01 SE 57 L10203-1411/22/2005 Ce-144 7.90E+01 7.30E+01 2.40E+02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-155-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg) 57 L10203-1411/22/2005 Co-57 -3.80E+00 8.90E+00 3.10E+0'1 L SE SE SE 57 57 L10203-1411/22/2005 L10203-1411/22/2005 Co-58 Co-60

-1.62E+01

-8.00E+00 9.70E+00 1.10E+01 3.90E+0-1 4.20E+01 SE 57 L10203-1411/22/2005 Cr-51 -1.00E+02 1.10E+02 3.80E+02 SE 57 L10203-1411/22/2005 Cs-134 1.30E+00 9.10E+00 3.20E+0 1 SE 57 L10203-1411/22/2005 Cs-137 -6.00E+00 1.10E+01 4.00E+0I 57 L10203-1411122/2005 Fe-59 -4.30E+01 2.60E+01 1.00E+02 L SE SE SE 57 57 L10203-1411/22/2005 L10203-1411/22/2005 1-131 K-40

-1.50E+01 1.29E+04 1.80E+01 4.70E+02 6.50E+01 3.90E+02 SE 57 L10203-1411/22/2005 La-140 0.00E+00 2.70E+01 9.60E+01 SE 57 L10203-1411/22/2005 Mn-54 -1.30E+01 1.10E+01 4.20E+01 U SE SE 57 57 L10203-1411/22/2005 L10203-1411/22/2005 Nb-95 Ru-103

-2.80E+01

-3.00E+00 1.30E+01 1.20E+01 5.20E+01I 4.10E+01 Ru-106 -5.70E+01 9.70E+01 3.60E+02 U SE SE SE 57 57 57 L10203-1411/2212005 L10203-1411/22/2005 L10203-1411/22/2005 Sb-124 Sb-125 4.00E+00 O.OOE+00 1.80E+01 2.60E+01 7.OOE+01 9.30E+O1 SE 57 L10203-1411/2212005 Se-75 6.OOE+00 1.40E+01 4.70E+01 SE 57 L10203-1411/22/2005 Zn-65 -3.40E+01 5.10E+01 1.80E+02 SE 57 L10203-1411/22/2005 Zr-95 -1.30E+01 1.60E+01 6.70E+0l SE 57 L10203-1511/2212005 AcTh-228 3.62E+02 4.30E+01 1.50E+02 SE 57 L10203-1511/2212005 Ag-108m -1.84E+01 9.00E+00 3.50E+01 U SE SE 57 57 L10203-1511/2212005 L10203-1511/22/2005 Ag-110m Ba-140 1.60E+01

-4.20E+01 1.20E+01 4.80E+01 4.1OE+01 1.80E+0,2 SE 57 L10203-1511/22/2005 Be-7 7.OOE+00 7.90E+01 2.80E+0.2 SE 57 L10203-1511/22/2005 Ce-141 1.80E+01 1.90E+01 6.40E+01 SE 57 L10203-1511/22/2005 Ce-144 1.80E+01 7.20E+01 2.50E+02

,SE 57 L10203-1511/22/2005 Co-57 -1.14E+01 8.70E+00 3.10E+01 SE 57 L10203-1511/22/2005 Co-58 -1.65E+01 9.10E+00 3.70E+01 SE 57 L10203-1511/2212005 Co-60 -2.00E+01 1.00E+01 4.20E+01 SE 57 L10203-1511/22/2005 Cr-51 -1.67E+02 9.60E+01 3.60E+02 SE 57 L10203-1511/2212005 Cs-134 8.90E+01 3.10E+01 1.00E+02 U SE SE 57 57 L10203-1511/2212005 L10203-1511/22/2005 Cs-137 Fe-59 2.20E+00 1.10E+01 8.70E+00 2.30E+01 3.10E+01 8.10E+01 SE 57 L10203-1511/2212005 1-131 5.20E+01 1.70E+01 5.30E+01 SE 57 L10203-1511/22/2005 K-40 1.16E+04 4.30E+02 3.20E+02

SE 57 L10203-1511/22/2005 La-140 8.00E+00 2.60E+01 9.20E+01 SE 57 L10203-1511/22/2005 Mn-54 -1.10E+00 8.40E+00 3.10E+01 SE 57 L10203-1511/22/2005 Nb-95 1.20E+01 1.20E+01 3.90E+01 SE 57 L10203-1511/22/2005 Ru-103 -2.00E+01 1.00E+01 3.90E+01 SE 57 L10203-1511/2212005 Ru-106 9.00E+00 8.00E+01 2.90E+02 SE 57 L10203-1511/22/2005 Sb-124 2.00E+00 1.20E+01 5.00E+01 SE 57 L10203-1511/22/2005 Sb-125 3.00E+01 2.40E+01 9.70E+01 SE 57 L10203-1511/22/2005 Se-75 1.90E+01 1.30E+01 4.30E+01 SE 57 L10203-1511/2212005 Zn-65 7.00E+01 4.20E+01 1.40E+02 SE 57 L10203-1511/2212005 Zr-95 1.00E+00 1.50E+01 5.80E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-156-

[1 Seabrook Station Radiological Environmental Monitoring Program Data - 2005 i SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TF L9767-01 8/16/2005 Be-7 8.OOE+01 1.20E+02 4.30E+02 TF L9498-01 6/28/2005 AcTh-228 -4.90E+01 2.40E+01 1.50E+02 TF L9498-01 6/28/2005 Ag-108m 4.OOE+OO 1.OOE+01 3.70E+01 TF L9498-01 6/2812005 Ag-11Om I.OOE+01 2.OOE+01 7.70E+01 I-TF L9498-01 6/2812005 Ba-1 40 2.20E+01 2.20E+01 8.20E+01 TF L9498-01 6/2812005 Be-7 2.40E+01 9.80E+01 3.80E+02 TF L9498-01 6/28/2005 Ce-141 2.20E+01 1.50E+01 5.OOE+01 La TF L9498-01 6/28/2005 Ce-144 -3.OOE+00 5.30E+01 2.OOE+02 TF L9498-01 6/28/2005 Co-57 1.33E+01 7.20E+00 2.30E+01 TF L9498-01 6/28/2005 Co-58 2.OOE+01 1.1OE+01 3.30E+01 TF TF TF L9498-01 L9498-01 L9498-01 6/28/2005 6/28/2005 6/28/2005 Co-60 Cr-51 Cs-134

-3.OOE+00 O.OOE+00 1.60E+01 1.60E+01 1.20E+02 1.1OE+01 6.70E+01 4.50E+02 3.40E+01 IU-TF L9498-01 6/28/2005 Cs-137 -7.OOE+00 1.20E+01 5.1OE+01 TF L9498-01 6/28/2005 Fe-59 2.50E+01 3.60E+01 1.40E+02 TF L9498-01 6/28/2005 1-131 O.OOE+00 3.40E+01 1.30E+02 3.30E+02 6.OOE+02 TF TF L9498-01 L9498-01 6/28/2005 6/28/2005 K-40 La-140 1.70E+03 2.60E+01 2.60E+01 9.40E+01 i.I TF L9498-01 6/28/2005 Mn-54 -2.90E+01 1.30E+01 6.30E+01 J TF L9498-01 6128/2005 Nb-95 -8.OOE+00 1.20E+01 5.50E+01 TF L9498-01 6/28/2005 Ru-1 03 1.20E+01 1.10E+01 3.70E+01 TF L9498-01 6/28/2005 Ru-1 06 1.1OE+02 1.20E+02 4.30E+02 TF L9498-01 6/2812005 Sb-124 4.50E+01 3.40E+01 1.1OE+02 TF TF L9498-01 L9498-01 6/2812005 6/28/2005 Sb-125 Se-75 7.OOE+00 5.70E+00 9.OOE+O0 3.10E+01 9.20E+00 2.70E+01 1.20E+02 3.40E+01 V-L TF L9498-01 6/28/2005 Zn-65 1.1OE+02 TF L9498-01 6/28/2005 Zr-95 -7.OOE+00 2.1OE+01 9.OOE+01 TF L9641-01 7/19/2005 AcTh-228 -1 .50E+01 2.60E+01 9.80E+01 TF TF TF TF L9641 -01 L9641-01 L9641 -01 L9641 -01 7/19/2005 7/19/2005 7/19/2005 7/19/2005 Ag-108m Ag-1IOm Ba-140 Be-7

-1.80E+O0 8.50E+00 9.OOE+O0

-4.50E+01 5.30E+00 9.O0E+OO 2.00E+01 5.90E+01 1.90E+01 3.IOE+01 7.40E+01 2.20E+02 L

TF L9641-01 7/19/2005 Ce-141 -1.1OE+01 1.20E+01 4.20E+01 TF L9641-01 7/19/2005 Ce-144 -5.OOE+00 3.20E+01 1.1OE+02 TF L9641-01 7/19/2005 Co-57 -2.50E+OO 4.1OE+00 1.50E+01 TF L9641-01 7/19/2005 Co-58 -1.OOE+OO 7.1OE+00 2.70E+01 TF L9641-01 7/19/2005 Co-60 5.OOE-01 6.90E+00 2.60E+01 TF TF TF L9641-01 L9641-01 L9641-01 7/19/2005 7/19/2005 7/19/2005 Cr-51 Cs-134 Cs-1 37 1.04E+02 5.20E+00

-2.60E+00 8.10E+01 7.OOE+O0 6.80E+00 2.70E+02 2.50E+01 2.50E+01 L

TF TF TF L9641-01 L9641-01 L9641-01 7/19/2005 7/19/2005 7/1912005 Fe-59 1-131 K-40

-7.OOE+00

-1.40E+01 1.56E+03 2.40E+01 3.40E+01 1.80E+02 9.20E+01 1.30E+02 4.OOE+02

L TF L9641-01 7119/2005 La-140 1.OOE+01 2.30E+01 8.50E+01 TF L9641-01 7/1912005 Mn-54 -2.OOE+00 6.90E+00 2.60E+01 L

TF L9641-01 7/19/2005 Nb-95 -2.OOE+O0 9.1OE+00 3.40E+01 TF L9641-01 7/1912005 Ru-1 03 -1.OOE+O0 7.90E+00 2.90E+01 TF L9641-01 7/1912005 Ru-106 4.OOE+01 6.20E+01 2.20E+02 TF L9641-01 7/19/2005 Sb-124 1.70E+01 1.90E+01 6.80E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-157-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMFLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TF 2 L9641-01 7/19/2005 Sb-125 -2.60E+01 1.70E+01 6.502E+O' L TF TF 2

2 L9641-01 L9641-01 7/19/2005 7/19/2005 Se-75 Zn-65

-5.70E+00

-3.00E+01 7.90E+00 1.60E+01 2.90E+O1 6.50E+OI TF 2 L9641-01 7/19/2005 Zr-95 6.00E+00 1.30E+01 4.60E+O1 TF 3 L9767-02 8/16/2005 Be-7 9.00E+01 1.10E+02 3.80E+O;'

W TF 3 L9498-02 6/28/2005 AcTh-228 -3.50E+01 3.80E+01 1.70E+O' TF 3 L9498-02 6/28/2005 Ag-108m 1.45E+01 8.1OE+O0 2.60E+OI L9498-02 6/28/2005 Ag-11Om 1.50E+01 1.50E+01 5.40E+OI L TF TF TF 3

3 3

L9498-02 L9498-02 6/28/2005 6/28/2005 Ba-140 Be-7 1.70E+01 1.61E+02 2.00E+01 9.60E+01 7.80E+Ol 3.10E+02 TF 3 L9498-02 6/28/2005 Ce-141 2.00E+00 1.20E+01 4.30E+OI L TF TF 3

3 L9498-02 L9498-02 6/28/2005 6/28/2005 Ce-144 Co-57 5.20E+01 4.40E+00 4.70E+01 5.90E+00 1.60E+02 2.002E+OI TF 3 L9498-02 6/28/2005 Co-58 -1.39E+01 9.OOE+00 4.40E+0 I TF 3 L9498-02 6/28/2005 Co-60 -2.00E+00 1.20E+01 5.00E+O I L TF 3 L9498-02 6/28/2005 Cr-51 9.00E+01 1.00E+02 3.60E+0:2 TF 3 L9498-02 6/28/2005 Cs-1 34 -1.13E+01 9.60E+00 4.50E+O I TF 3 L9498-02 6/28/2005 Cs-137 -3.00E+00 1.10E+01 4.30E+0 I L TF 3 3

L9498-02 L9498-02 6/28/2005 6/28/2005 Fe-59 1-131

-4.OOE+00 O.OOE+OO 2.80E+01 2.60E+01 1.20E+0 2 9.70E+0 I TF TF 3 L9498-02 6/28/2005 K-40 1.38E+03 3.00E+02 7.50E+02 L TF TF 3

3 L9498-02 L9498-02 6/28/2005 6/28/2005 La-140 Mn-54 1.90E+01

-5.30E+00 2.40E+01 8.80E+00 8.90E+0I 3.90E+0 1 TF 3 L9498-02 6/28/2005 Nb-95 4.00E+00 1.30E+01 5.10E+O1 L TF TF 3

3 L9498-02 L9498-02 6/28/2005 6/28/2005 Ru-103 Ru-106

-7.00E+00

-1.20E+02 1.20E+01 1.OOE+02 4.80E+O 4.30E+02 0

TF 3 L9498-02 6/28/2005 Sb-124 1.10E+01 2.50E+01 1.10E+0 2 TF 3 L9498-02 6/28/2005 Sb-125 3.00E+01 2.40E+01 8.20E+0 I TF 3 L9498-02 6/28/2005 Se-75 -1.00E+00 1.00E+01 3.80E+01 TF 3 L9498-02 6/28/2005 Zn-65 -7.00E+00 2.20E+01 9.50E+01 TF 3 L9498-02 6/28/2005 Zr-95 -1.70E+01 2.10E+01 8.80E+01 TF 3 L9641-02 7/19/2005 AcTh-228 3.OOE+00 2.90E+01 1.10E+02 TF 3 L9641-02 7/19/2005 Ag-108m 1.24E+01 5.70E+00 1.80E+01 TF 3 L9641-02 7/19/2005 Ag-110m 1.30E+01 1.tOE+01 3.60E+01 TF 3 L9641-02 7/19/2005 Ba-140 5.00E+00 2.10E+01 8.30E+01 TF 3 L9641-02 7/19/2005 Be-7 5.10E+01 6.10E+01 2.10E+02 TF 3 L9641-02 7/19/2005 Ce-141 1.50E+01 1.20E+01 4.00E+01 TF 3 L9641-02 7/19/2005 Ce-144 1.60E+01 3.20E+01 1.10E+02 TF 3 L9641-02 7/19/2005 Co-57 -2.60E+00 4.20E+00 1.50E+01 TF 3 L9641-02 7/19/2005 Co-58 -3.30E+00 7.30E+00 2.80E+01 TF 3 L9641-02 7/19/2005 Co-60 -7.30E+00 8.30E+00 3.30E+01 TF 3 L9641-02 7/19/2005 Cr-51 -1.31E+02 8.30E+01 3.20E+02 TF 3 L9641-02 7/19/2005 Cs-1 34 -6.10E+00 7.50E+00 3.00E+01 TF 3 L9641-02 7/19/2005 Cs-137 5.10E+00 6.40E+00 2.30E+01 t TF 3 L9641-02 7/19/2005 Fe-59 -6.00E+00 2.50E+01 9.70E+01 TF 3 L9641-02 7/19/2005 1-131 -4.00E+00 3.70E+01 1.30E+02 TF 3 L9641-02 7/19/2005 K-40 1.79E+03 2.10E+02 4.50E+02 TF 3 L9641-02 7/1912005 La-140 6.00E+00 2.40E+01 9.50E+01 TF 3 L9641-02 7/19/2005 Mn-54 -1.60E+00 6.60E+00 2.50E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation) bl + Minimum Detectable Concentration > Lower Limit of Detection Requirement

-158-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCikg) (pCikg)

TF L9641-02 7/19/2005 Nb-95 3.OOE+00 1.OOE+01 3.70E+01 TF L9641-02 7/19/2005 Ru-103 3.40E+00 8.1OE+00 2.90E+01 TF L9641 -02 7/19/2005 Ru-1i06 -6.OOE+01 7.20E+01 2.70E+02 TF L9641 -02 7/19/2005 Sb-1i24 1.1OE+01 1.50E+01 5.70E+01 TF L9641 -02 7/19/2005 Sb-125 -6.OOE+00 1.70E+01 6.30E+01 TF L9641 -02 7/19/2005 Se-75 -7.30E+00 7.20E+00 2.70E+01 TF L9641 -02 7/19/2005 Zn-65 3.20E+01 1.80E+01 5.90E+01 TF L9641 -02 7/19/2005 Zr-95 5.OOE+00 1.30E+01 4.80E+01 TF L9767-03 8/16/2005 AcTh-228 2.1 OE+01 3.OOE+01 1.1OE+02 TF L9767-03 8/16/2005 Ag-108m -2.80E+00 6.30E+00 2.40E+01 TF L9767-03 8/16/2005 Ag-110m 2.20E+01 1.20E+01 3.70E+01 TF L9767-03 8/16/2005 Ba-140 -5.60E+01 4.80E+01 2.10E+02 TF L9767-03 8/16/2005 Be-7 4.OOE+00 8.60E+01 3.10E+02 TF L9767-03 8/16/2005 Ce-141 7.OOE+00 1.70E+01 6.OOE+01 TF L9767-03 8/16/2005 Ce-144 -7.OOE+01 3.90E+01 1.50E+02 TF L9767-03 8/16/2005 Co-57 2.80E+00 5.20E+00 1.80E+01 TF L9767-03 8/16/2005 Co-58 -8.OOE+00 8.30E+00 3.40E+01 TF L9767-03 8/16/2005 Co-60 -7.40E+00 8.40E+00 3.40E+01 TF L9767-03 8/16/2005 Cr-51 6.OOE+01 1.40E+02 4.90E+02 TF L9767-03 8/16/2005 Cs-134 0.OOE+00 8.30E+00 3.10E+01 TF L9767-03 8/16/2005 Cs-137 -4.30E+00 8.70E+0O 3.30E+01 TF L9767-03 8/16/2005 Fe-59 3.20E+01 2.80E+01 9.50E+01 TF L9767-03 8/16/2005 1-131 3.OOE+01 1.40E+02 5.OOE+02 TF L9767-03 8/16/2005 K-40 2.32E+03 2.20E+02 3.90E+02 TF TF L9767-03 L9767-03 8/16/2005 8/16/2005 La-140 Mn-54

-6.50E+01

-3.70E+00 5.50E+01 8.30E+00 1.40E+01 2.40E+02 3.20E+01 4.90E+01 L

TF L9767-03 8/16/2005 Nb-95 1.40E+01 TF L9767-03 8/16/2005 Ru-103 4.OOE+00 1.IOE+01 4.OOE+01 TF L9767-03 8/16/2005 Ru-1 06 -1.11 E+02 6.90E+01 2.80E+02 TF L9767-03 8/16/2005 Sb-124 -2.30E+01 2.40E+01 1.1OE+02 TF L9767-03 8/16/2005 Sb-125 -2.1OE+01 1.90E+01 7.30E+01 TF L9767-03 8/16/2005 Se-75 0.O0E+00 9.60E+00 3.40E+01 TF L9767-03 8/16/2005 Zn-65 -1.40E+01 1.60E+01 6.50E+01 TF L9767-03 8/16/2005 Zr-95 -6.OOE+00 1.70E+01 6.50E+01 TF L9498-03 6/28/2005 AcTh-228 -1.OOE+O0 5.1OE+01 2.OOE+02 TF L9498-03 6/28/2005 Ag-108m 5.60E+00 8.50E+00 3.1OE+01 TF L9498-03 6/28/2005 Ag-11Om 1.30E+01 1.70E+01 6.30E+01 TF L9498-03 6/28/2005 Ba-140 2.90E+01 2.90E+01 I.OOE+02 TF L9498-03 6/28/2005 Be-7 -8.30E+01 9.20E+01 3.90E+02 TF L9498-03 6/28/2005 Ce-141 -5.OOE+OO 1.40E+01 5.40E+01 TF L9498-03 6/28/2005 Ce-144 -5.1OE+01 4.80E+01 1.90E+02 TF L9498-03 6/28/2005 Co-57 9.80E+00 6.20E+00 2.OOE+01 TF L9498-03 6/28/2005 Co-58 O.OOE+00 1.30E+01 5.1OE+01 TF L9498-03 6/28/2005 Co-60 7.OOE+00 1.30E+01 5.20E+01 TF L9498-03 6/28/2005 Cr-51 -9.1OE+01 9.80E+01 4.OOE+02 TF L9498-03 6/28/2005 Cs-134 -3.00E+00 1.30E+01 5.20E+01 TF L9498-03 6/28/2005 Cs-137 6.OOE+00 1.1OE+01 4.1OE+01 TF L9498-03 6/28/2005 Fe-59 6.OOE+00 3.90E+01 1.60E+02 TF L9498-03 6/28/2005 1-131 4.40E+01 3.40E+01 1.1OE+02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-159-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 7' SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCVikg)

K-40 1.01E+03 2.80E+02 7.20E+0:

L TF TF TF 6

6 6

L9498-03 L9498-03 L9498-03 6/28/2005 6/28/2005 6/28/2005 La-140 Mn-54 3.30E+01

-4.20E+00 3.30E+01 8.OOE+00 1.20E+0.'

3.70E+01 TF 6 L9498-03 6/28/2005 Nb-95 -1.60E+01 1.40E+01 6.10E+0-1 L TF TF 6

6 L9498-03 L9498-03 6/28/2005 6/28/2005 Ru-1 03 Ru-1 06 2.70E+00

-2.40E+01 9.60E+00 9.00E+01 3.80E+0 1 3.70E+0:'

TF 6 L9498-03 6/28/2005 Sb-124 -1.30E+01 2.30E+01 1.20E+02 TF 6 L9498-03 6/28/2005 Sb-125 -6.O0E+00 2.50E+01 9.90E+0I l TF 6 L9498-03 6/28/2005 Se-75 5.OOE+00 1.20E+01 2.30E+01 4.30E+0I 7.30E+0'I TF 6 L9498-03 6/28/2005 Zn-65 3.90E+01 TF 6 L9498-03 6128/2005 Zr-95 -6.OOE+00 2.OOE+01 8.30E+0I L TF TF 6

6 L9641-03 L9641-03 7/19/2005 7/19/2005 AcTh-228 Ag-108m 1.OOE+01 5.00E-01 1.90E+01 4.60E+00 6.60E+0l 1.60E+0l 7.40E+00 2.80E+01 L TF TF TF 6

6 6

L9641-03 L9641-03 L9641-03 7/19/2005 7/19/2005 7/19/2005 Ag-1I0m Ba-140 Be-7

-3.OOE+00

-1.00E+00

-8.90E+01 1.70E+01 5.70E+01 6.4OE+0I 2.20E+0:2 TF 6 L9641-03 7/19/2005 Ce-141 -1.60E+00 9.90E+00 3.50E+0 1 TF 6 L9641-03 7/19/2005 Ce-144 4.80E+01 2.90E+01 9.60E+0I L TF TF 6

6 L9641-03 L9641-03 7/19/2005 Co-57 7/19/2005 Co-58 1.00E+00

-2.40E+00 3.90E+00 6.20E+00 1.30E+01 2.30E+01 TF 6 L9641-03 7/19/2005 Co-60 5.10E+00 6.40E+00 2.20E+01 L TF 6 L9641-03 7/19/2005 L9641-03 7/19/2005 Cr-51 Cs-134

-8.40E+01

-3.80E+00 7.80E+01 5.40E+00 2.80E+02 2.1OE+01 TF 6 TF 6 L9641-03 7/19/2005 Cs-137 1.29E+01 5.70E+00 1.80E+01 TF 6 L9641-03 7/19/2005 Fe-59 0.OOE+00 1.80E+01 6.80E+0 I TF 6 L9641-03 7/19/2005 1-131 -1.70E+01 3.30E+01 1.20E+0;2 TF 6 L9641-03 7/19/2005 K-40 2.27E+03 1.60E+02 2.80E+0;2 TF 6 L9641-03 7/19/2005 La-140 -1.OOE+00 1.90E+01 7.40E+0l L TF TF 6

6 L9641-03 L9641-03 7/19/2005 7/19/2005 Mn-54 Nb-95

-7.50E+00

-8.30E+00 5.20E+00 7.60E+00 2.OOE+01 2.90E+0l TF 6 L9641-03 7/19/2005 Ru-103 4.10E+00 6.90E+00 2.40E+01 L TF 6 L9641-03 7/19/2005 Ru-106 Sb-124

-2.20E+01 3.10E+01 5.60E+01 1.10E+01 2.OOE+02 2.80E+01 TF 6 L9641-03 7/19/2005 6 L9641-03 7/19/2005 Sb-125 -3.0OE+00 1.40E+01 5.20E+ol U TF TF TF 6

6 L9641-03 L9641-03 7/19/2005 7/19/2005 Se-75 Zn-65 2.1OE+00 2.OOE+00 6.30E+00 1.40E+01 2.20E+01 5.10E+01 TF 6 L9641-03 7/19/2005 Zr-95 -7.OOE+00 1.10E+01 4.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-160-

I- I Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG L9371-01 6/1/2005 AcTh-228 3.00E+00 2.50E+01 9.OOE+01 TG L9371-01 6/1/2005 Ag-108m -7.30E+00 4.40E+00 1.70E+01 TG L9371-01 6/1/2005 Ag-1I1m 2.14E+01 9.60E+00 3.OOE+01 TG L9371-01 6/1/2005 Ba-1 40 1.70E+01 2.70E+01 1.OOE+02 TG L9371-01 6/1/2005 Be-7 9.20E+02 1.20E+02 2.70E+02 TG L9371-01 6/1/2005 Ce-141 -2.40E+01 1.30E+01 4.90E+01 TG L9371-01 6/1/2005 Ce-144 2.30E+01 2.80E+01 9.50E+01 TG L9371-01 6/112005 Co-57 3.40E+00 3.20E+00 1.10E+01 TG L9371-01 6/1/2005 Co-58 8.20E+00 8.30E+OO 2.90E+01 TG L9371-01 6/1/2005 Co-60 -6.1OE+OO 5.90E+00 2.50E+01 TG L9371-01 6/1/2005 Cr-51 1.OOE+01 9.1OE+01 3.20E+02 TG L9371 -01 6/1/2005 Cs-1 34 -1.OOE+00 6.80E+00 2.50E+01 TG L9371-01 6/1/2005 Cs-137 O.OOE+O0 6.O0E+OO 2.20E+01 TG L9371-01 6/1/2005 Fe-59 1.30E+01 2.70E+01 9.70E+01 TG L9371-01 6/1/2005 1-131 1.60E+02 1.OOE+02 3.40E+02 TG L9371-01 6/1/2005 1-131 8.OOE+OO 1.OOE+01 4.20E+01 TG L9371-01 6/1/2005 K-40 3.30E+03 2.20E+02 3.1OE+02 TG L9371-01 6/1/2005 La-140 2.OOE+01 3.1OE+O1 1.20E+02 TG L9371-01 6/1/2005 Mn-54 -3.60E+00 7.OOE+OO 2.60E+01 TG L9371-01 6/1/2005 Nb-95 7.OOE+00 1.OOE+01 3.60E+01 TG L9371-01 6/1/2005 Ru-103 -1.OOE+01 1.OOE+01 3.90E+01 TG L9371-01 6/1/2005 Ru-106 2.1OE+01 5.20E+01 1.90E+02 TG L9371-01 6/1/2005 Sb-124 O.OOE+00 1.80E+01 7.10E+01 TG L9371-01 6/1/2005 Sb-125 -2.60E+01 1.40E+01 5.60E+01 TG TG L9371-01 L9371-01 6/1/2005 6/1/2005 Se-75 Zn-65 2.1OE+00

-6.60E+01 8.OOE+OO 1.80E+01 2.80E+01 7.90E+01 L TG L9371-01 6/1/2005 Zr-95 I.OOE+01 1.40E+01 4.80E+01 TG L9499-01 6/28/2005 AcTh-228 -2.30E+01 7.70E+01 3.1OE+02 TG L9499-01 6/28/2005 Ag-108m 6.OOE+00 1.OOE+01 3.90E+01 TG L9499-01 6/28/2005 Ag-1I0m -1 ,50E+01 2.50E+01 1.1OE+02 Ba-140 -3.50E+01 4.90E+01 2.30E+02 TG TG TG L9499-01 L9499-01 L9499-01 6/28/2005 6/28/2005 6/28/2005 Be-7 Ce-141 6.OOE+02 6.60E+01 2.80E+02 2.50E+01 8.80E+02 7.40E+01 LI TG L9499-01 6/28/2005 Ce-144 -3.OOE+00 6.50E+01 2.40E+02 TG L9499-01 6/28/2005 Co-57 -1 .32E+01 7.50E+00 3.20E+01 TG L9499-01 6/28/2005 Co-58 -6.00E+OO 2.1OE+01 8.60E+01 TG L9499-01 6/28/2005 Co-60 -1.20E+01 2.20E+01 1.OOE+02 TG L9499-01 6/28/2005 Cr-51 -9.OOE+01 1.60E+02 6.30E+02 TG L9499-01 6/28/2005 Cs-134 2.60E+01 1.80E+01 5.70E+01 TG L9499-01 6/28/2005 Cs-1 37 -5.OOE+OO 1.50E+01 6.60E+01 TG L9499-01 6/28/2005 Fe-59 4.OOE+01 4.40E+01 1.70E+02 TG L9499-01 6/28/2005 1-131 -1.OOE+01 4.30E+01 1.70E+02 TG L9499-01 6/28/2005 1-131 -2.90E+00 8.90E+00 5.70E+01 TG L9499-01 6/28/2005 K-40 2.27E+03 5.30E+02 1.30E+03 TG L9499-01 6/28/2005 La-140 -4.OOE+01 5.60E+01 2.60E+02 TG L9499-01 6/28/2005 Mn-54 2.30E+01 1.80E+01 6.OOE+01 TG L9499-01 6/28/2005 Nb-95 -9.OOE+OO 2.70E+01 1.10E+02 TG L9499-01 6/28/2005 Ru-103 9.OOE+00 2.OOE+01 7.50E+01 TG L9499-01 6/28/2005 Ru-106 -2.70E+02 1.50E+02 7.IOE+02

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-161-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG 8 L9499-01 6/28/2005 Sb-1 24 2.30E+01 2.30E+01 6.30E+OI L TG TG 8

8 L9499-01 L9499-01 6/28/2005 6/28/2005 Sb-1 25 Se-75 7.20E+01 8.OOE+00 4.40E+01 1.80E+01 1.40E+02 6.50E+OI TG 8 L9499-01 6/28/2005 Zn-65 -2.70E+01 5.40E+01 2.20E+02 L TG TG 8

8 8

L9499-01 L9640-01 L9640-01 6/28/2005 7/19/2005 7/19/2005 Zr-95 AcTh-228 Ag-108m

-8.O0E+OO

-2.1OE+01

-6.30E+00 3.20E+01 2.70E+01 5.90E+00 1.40E+0:2 I.OOE+0:2 2.20E+OI TG TG 8 L9640-01 7/19/2005 Ag-110m -1.1 E+01 9.70E+OO 3.90E+O I L TG 8 L9640-01 7/19/2005 7/19/2005 Ba-140 Be-7

-3.80E+01 5.70E+02 2.20E+01 1.30E+02 9.90E+0 I 3.70E+0:2

TG 8 L9640-01 TG 8 L9640-01 7/19/2005 Ce-141 -1.OOE+OO 1.30E+01 4.60E+01 TG 8 L9640-01 7/19/2005 Ce-144 2.40E+01 3.30E+01 1.1OE+02 TG 8 L9640-01 7/19/2005 Co-57 1.OOE-01 4.1OE+OO 1.50E+01 TG 8 L9640-01 7/19/2005 Co-58 O.OOE+00 8.1OE+00 3.OOE+01 L TG TG 8

8 L9640-01 L9640-01 7/19/2005 7/19/2005 Co-60 Cr-51 1.68E+01

-4.20E+01 8.40E+00 9.30E+00 8.80E+01 8.90E+00 3.OOE+01 3.20E+02 3.10E+01 TG 8 L9640-01 7/19/2005 Cs-1 34 L TG TG TC 8

8 8

L9640-01 L9640-01 L9640-01 7/19/2005 7/19/2005 7/19/2005 Cs-1 37 Fe-59 1-131

-6.1OE+00 4.50E+01 1.60E+00 7.OOE+00 2.10E+01 7.40E+00 2.70E+01 6.20E+01 4.10E+01 TG 8 L9640-01 7/19/2005 1-131 1.60E+01 3.60E+01 1.30E+02 TG 8 L9640-01 7/19/2005 K-40 3.18E+03 2.40E+02 3.90E+02 TG 8 L9640-01 7/19/2005 La-140 -4.40E+01 2.60E+01 1.1OE+02 T- 8 L9640-01 7/19/2005 Mn-54 1.09E+01 8.20E+00 2.70E+01 TG 8 L9640-01 7/19/2005 Nb-95 -6.OOE+00 1.20E+01 4.30E+01 TG 8 L9640-01 7/19/2005 Ru-1 03 4.30E+00 9.1OE+00 3.20E+01 TG 8 L9640-01 7/19/2005 Ru-106 -5.80E+01 7.00E+01 2.70E+02 TC- 8 L9640-01 7/19/2005 Sb-124 1.90E+01 2.OOE+01 7.OOE+01 TG 8 L9640-01 7/1912005 Sb-125 -1.30E+01 1.90E+01 7.20E+01 TG 8 L9640-01 7/19/2005 Se-75 3.20E+00 9.1OE+00 3.20E+01 TG 8 L9640-01 7/19/2005 Zn-65 -3.80E+01 2.1OE+01 8.60E+01 Tci 8 L9640-01 7/19/2005 Zr-95 -2.80E+01 1.60E+01 6.40E+01 TG. 8 L9768-01 8/16/2005 AcTh-228 3.70E+01 5.50E+01 2.OOE+02 TC 8 L9768-01 8/16/2005 Ag-108m -1.45E+01 9.30E+00 4.OOE+01 TC- 8 L9768-01 8/16/2005 Ag-11Om -1.70E+01 1.90E+01 8.30E+01 TG 8 L9768-01 8/16/2005 Ba-1 40 -2.40E+01 5.30E+01 2.50E+02 TG 8 L9768-01 8/16/2005 Be-7 1.50E+03 2.20E+02 4.50E+02 TG 8 L9768-01 8/16/2005 Ce-141 -3.50E+01 3.80E+01 1.40E+02 TG 8 L9768-01 8116/2005 Ce-144 -1.30E+01 4.40E+01 1.70E+02 TG 8 L9768-01 8/16/2005 Co-57 -1.13E+01 5.1OE+O0 2.20E+01 TG 8 L9768-01 8/16/2005 Co-58 -7.OOE+00 1.90E+0i 7.60E+C1 TG 8 L9768-01 8/16/2005 Co-60 -1.30E+01 2.OOE+01 8.1 OE+01 TG 8 L9768-01 8/16/2005 Cr-51 2.20E+02 1.70E+02 5.60E+C2 TG 8 L9768-01 8/16/2005 Cs-134 -1.SOE+01 1.30E+01 5.80E+01 TG 8 L9768-01 8/16/2005 Cs-137 O.OOE+00 1.20E+01 4.80E+C'1 TG 8 L9768-01 8/16/2005 Fe-59 -1.50E+01 6.60E+01 2.70E+02 TC; 8 L9768-01 8/16/2005 1-131 -4.40E+01 8.90E+01 3.60E+C02 TG 8 L9768-01 8/16/2005 1-131 -3.44E+00 6.90E-01 2.60E+(01 TG 8 L9768-01 8/16/2005 K-40 3.94E+03 4.70E+02 6.90E+C2

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-162-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCikg)

TG L9768-01 8/16/2005 La-140 -2.70E+01 6.10E+01 2.90E+02 TG L9768-01 8116/2005 Mn-54 -1.OOE+01 1.1OE+01 5.OOE+01 I 1 TG L9768-01 8/16/2005 Nb-95 -8.OOE+00 2.60E+01 1.OOE+02 TG L9768-01 8/16/2005 Ru-1 03 -3.OOE+00 1.80E+01 7.1OE+01 TG L9768-01 8/16/2005 Ru-106 7.OOE+01 1.20E+02 4.50E+02 I .

TG L9768-01 8/16/2005 Sb-124 5.1 OE+01 3.80E+01 1.30E+02 TG L9768-01 8/16/2005 Sb-125 1.1 OE+01 3.1OE+01 1.1OE+02 TG L9768-01 8/16/2005 Se-75 -1.50E+01 1.20E+01 5.OOE+01 I !

TG L9768-01 8/16/2005 Zn-65 -6.90E+01 3.70E+01 1.70E+02 TG L9768-01 8/16/2005 Zr-95 -2.70E+01 3.50E+01 1.40E+02 TG L9951-01 9/27/2005 AcTh-228 7.70E+01 4.40E+01 1.40E+02 TG L9951-01 9/27/2005 Ag-108m -3.80E+00 7.20E+00 2.70E+01 TG L9951-01 9/27/2005 Ag-1I0m -1.50E+01 1.40E+01 5.80E+01 TG L9951 -01 9/27/2005 Ba-140 2.O0E+01 3.20E+01 1.20E+02 TG L9951-01 9/27/2005 Be-7 1.53E+03 1.80E+02 3.90E+02 TG L9951-01 9/27/2005 Ce-141 -2.30E+01 1.20E+01 4.60E+01 TG L9951-01 9/27/2005 Ce-144 1.1OE+01 3.50E+01 1.20E+02 TG L9951-01 9/27/2005 Co-57 8.90E+00 4.40E+00 1.40E+01 TG L9951-01 9/27/2005 Co-58 -2.O0E+OO 1.30E+01 4.80E+01 TG L9951-01 9/27/2005 Co-60 1.40E+01 1.20E+01 4.20E+01 TG L9951-01 9/27/2005 Cr-51 -1.06E+02 9.80E+01 3.80E+02 TG L9951-01 9/27/2005 Cs-1 34 -5.OOE+00 1.20E+01 4.50E+01 TG L9951 -01 9/27/2005 Cs-1 37 2.OOE+00 1.OOE+01 3.80E+01 TG L9951-01 9/27/2005 Fe-59 2.20E+01 2.50E+01 9.00E+01 TG L9951 -01 9/27/2005 1-131 1.70E+01 5.10E+01 1.80E+02 TG L9951-01 9/27/2005 1-131 4.1OE+OO 7.20E+00 3.50E+01 TG L9951-01 9/27/2005 K-40 2.50E+03 3.1OE+02 6.50E+02 TG L9951-01 9/27/2005 La-140 2.30E+01 3.70E+01 1.40E+02 TG L9951 -01 9/27/2005 Mn-54 6.OOE+00 1.1OE+01 3.80E+01 TG L9951-01 9/27/2005 Nb-95 -2.20E+01 1.50E+01 6.20E+01 TG L9951-01 9/27/2005 Ru-103 -2.OOE+01 1.30E+01 5.20E+01 TG L9951-01 9/27/2005 Ru-106 -6.50E+01 8.90E+01 3.40E+02 TG L9951-01 9/27/2005 Sb-124 -5.1OE+01 3.OOE+01 1.40E+02 TG L9951-01 9/27/2005 Sb-125 -1 .50E+01 2.60E+01 9.50E+01 TG L9951-01 9/27/2005 Se-75 1.IOE+01 1.OOE+01 3.50E+01 TG L9951-01 9/27/2005 Zn-65 2.70E+01 2.70E+01 9.30E+01 TG L9951-01 9/27/2005 Zr-95 6.OOE+00 2.50E+01 9.OOE+01

-6.OOE+01 4.70E+01 TG TG 8

8 L10100-0110/26/2005 LI0100-0110/26/2005 AcTh-228 Ag-108m -9.OOE-01 9.OOE+O0 1.80E+02 3.20E+01 U TG 8 L10100-0110/26/2005 Ag-1I1m -2.OOE+00 1.60E+01 5.90E+01 TG 8 L10100-0110/26/2005 Ba-140 -2.30E+01 2.50E+01 1.OOE+02 TG 8 L10100-0110/26/2005 Be-7 2.88E+03 2.OOE+02 3.70E+02 TG 8 L10100-0110/26/2005 Ce-141 -3.OOE+OO 1.50E+01 5.20E+01 TG 8 LI0100-0110/26/2005 Ce-144 8.30E+01 4.70E+01 1.50E+02 , I TG 8 L10100-0110/26/2005 Co-57 -1.47E+01 5.90E+00 2.20E+01 TG 8 L10100-0110/26/2005 Co-58 -1.30E+01 1.1OE+01 4.50E+01 TG 8 L10100-0110/26/2005 Co-60 -1.30E+01 1.40E+01 5.60E+01 TG 8 L10100-0110/26/2005 Cr-51 -7.80E+01 9.60E+01 3.50E+02 TG 8 LI0100-0110/26/2005 Cs-134 8.00E+00 1.40E+01 4.80E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-163-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (PC./kg) (pCi/kg) (pCi/kg)

TG 8 L10100-0110126/2005 Cs-137 1.50E+01 1.102+01 3.70E+Ol TG 8 L10100-0110/26/2005 Fe-59 -4.00E+OO 2.80E+01 1.00E+02 TG 8 L10100-0110/26/2005 1-131 -4.83E+00 9.00E-01 5.40E+01 TG 8 L10100-0110/26/2005 1-131 -1.OOE+OO 2.40E+01 8.70E+OI TG 8 L10100-0110/26/2005 K40 3.36E+03 3.40E+02 6.50E+0:2 TG 8 L10100-0110/26/2005 La-140 -2.70E+01 2.90E+01 1.20E+02 TG 8 LI 0100-0110/26/2005 Mn-54 4.OOE+00 1.20E+01 4.30E+OI TG 8 L10100-0110/26/2005 Nb-95 -1.60E+01 1.30E+01 5.10E+O I TG 8 L10100-0110/26/2005 Ru-1 03 -8.00E+OO 1.OOE+01 3.80E+O I TG 8 LI0100-0110/26/2005 Ru-1 06 2.50E+01 8.90E+01 3.20E+0:2 TG 8 LI0100-0110/26/2005 Sb-124 1.40E+01 3.20E+01 1.20E+0:2 TG 8 LI 0100-0110/26/2005 Sb-125 1.20E+01 2.70E+01 9.40E+O I TG 8 L10100-0110/26/2005 Se-75 5.00E+OO 1.10E+01 4.00E+O 1 TG 8 LIO100-0110/26/2005 Zn-65 8.00E+00 2.80E+01 1.OOE+0:2 TG 8 L10100-0110/26/2005 Zr-95 -1.80E+01 1.90E+01 7.60E+O 1 TG L9371 -02 6/1/2005 AcTh-228 -5.90E+01 3.00E+01 1.40E+0:2 TG L9371-02 6/11/2005 Ag-108m -8.90E+00 7.00E+O0 2.80E+O0 TG L9371 -02 6/1/2005 Ag-1I Om -8.00E+OO 1.30E+01 5.10E+01 TG L9371 -02 611/2005 Ba-140 1.20E+01 4.10E+01 1.60E+02 TG L9371-02 611/2005 Be-7 1.40E+03 1.70E+02 3.60E+02 TG L9371-02 6/1/2005 Ce-141 -2.60E+01 1.70E+01 6.70E+01 TG L9371-02 6/1/2005 Ce-1 44 2.OOE+00 4.20E+01 1.50E+02 TG L9371-02 6/1/2005 Co-57 1.40E+OO 4.90E+00 1.80E+01 TG L9371-02 6/1/2005 Co-58 -1.30E+01 1.00E+01 4.40E+01 TG L9371-02 6/1/2005 Co-60 2.40E+00 9.40E+00 3.70E+01 TG L9371-02 6/1/2005 Cr-51 1.20E+02 1.30E+02 4.60E+02 TG L9371-02 6/1/2005 Cs-134 -3.90E+00 9.10E+00 3.60E+01 Tc- L9371 -02 6/1/2005 Cs-1 37 8.00E+OO 8.90E+00 3.10E+01 TG L9371-02 6/1/2005 Fe-59 5.60E+01 3.30E+01 1.10E+02 TG L9371 -02 6/1/2005 1-131 -1.06E+02 9.70E+01 3.80E+02 TC-. 8.00E+O0 1.10E+01 4.40E+01 TG- L9371-02 6/1/2005 1-131 TG L9371-02 6/1/2005 K-40 2.71 E+03 2.90E+02 5.00E+02 TC-i L9371-02 611/2005 La-140 1.40E+01 *4.70E+01 1.80E+02 TG L9371-02 6/1/2005 Mn-54 -7.1OE+00 9.40E+00 3.80E+01 TG L9371-02 6/1/2005 Nb-95 -2.30E+01 1.30E+01 5.80E+01 TG L9371-02 6/1/2005 Ru-103 -6.00E+OO 1.30E+01 5.10E+01 L9371-02 611/2005 Ru-106 5.00E+OO 9.10E+01 3.40E+02 TG L9371-02 6/1/2005 Sb-124 -4.10E+01 2.80E+01 1.30E+02 TG L9371 -02 6/1/2005 Sb-125 2.80E+01 2.30E+01 7.90E+01 TG L9371 -02 611/2005 Se-75 -4.00E+OO 1.10E+01 4.20E+01 TG L9371-02 6/1/2005 Zn-65 -2.30E+01 1.80E+01 8.1 0E+01 TG L9371 -02 6/1/2005 Zr-95 2.70E+01 2.10E+01 7.20E+01 TG L9499-02 6/28/2005 AcTh-228 -5.00E+00 4.90E+01 1.90E+02 TG L9499-02 6/28/2005 Ag-108m -1.10E+01 1.OOE+01 4.00E+01 TG L9499-02 6/28/2005 Ag-1I Om -2.60E+01 1.60E+01 7.20E+01 TG L9499-02 6/28/2005 Ba-140 -9.OOE+OO 2.40E+01 1.10E+02 TG L9499-02 6/28/2005 Be-7 5.80E+02 1.50E+02 4.20E+02 TG L9499-02 6/28/2005 Ce-141 3.00E+OO 1.40E+01 5.10E+01 TG Ce-144 5.90E+01 3.50E+01 1.10E+G2 L9499-02 6/28/2005

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-164-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG L9499-02 6/28/2005 Co-57 -6.20E+00 5.00E+00 2.00E+01 I i TG L9499-02 6/2812005 Co-58 5.00E+00 1.30E+01 4.90E+01 TG L9499-02 6/28/2005 Co-60 -3.00E+00 1.60E+01 6.40E+01 TG L9499-02 6/28/2005 Cr-51 2.00E+01 1.OOE+02 3.80E+02 TG L9499-02 6/28/2005 Cs-1 34 6.00E+00 1.30E+01 5.00E+01 TG L9499-02 6/28/2005 Cs-1 37 2.00E+01 1.40E+01 4.60E+01 TG L9499-02 6/28/2005 Fe-59 -7.00E+00 3.90E+01 1.60E+02 8.90E+01 TG TG L9499-02 L9499-02 6/28/2005 6/28/2005 1-131 1-131

-1.OOE+00

-8.40E+00 2.30E+01 1.60E+00 5.40E+01

'I TG L9499-02 6/28/2005 K-40 2.46E+03 3.70E+02 6.80E+02 TG L9499-02 6/28/2005 La-140 -1.10E+01 2.80E+01 1.30E+02 TG L9499-02 6/28/2005 Mn-54 -2.70E+01 1.20E+01 5.50E+01 TG L9499-02 6/28/2005 Nb-95 -6.OOE+00 1.60E+01 6.40E+01 TG L9499-02 6/28/2005 Ru-103 -2.OOE+00 1.30E+01 4.90E+01 TG L9499-02 6/28/2005 Ru-106 6.30E+01 9.60E+01 3.50E+02 TG L9499-02 6/28/2005 Sb-124 O.OOE+00 1.80E+01 9.20E+01 TG L9499-02 6/28/2005 Sb-125 -1.OOE+01 3.10E+01 1.20E+02 TG L9499-02 6/28/2005 Se-75 -5.00E+00 1.20E+01 4.40E+01 TG L9499-02 6/28/2005 Zn-65 -7.00E+00 3.30E+01 1.30E+02 TG L9499-02 6/28/2005 Zr-95 1.OOE+01 2.1OE+01 7.80E+01 TG L9640-02 7/19/2005 AcTh-228 -1.30E+01 3.OOE+01 1.1OE+02 TG L9640-02 7/19/2005 Ag-108m 5.20E+00 5.50E+00 1.90E+01 TG L9640-02 7/19/2005 Ag-110m 1.OOE+00 1.1OE+01 3.90E+01 TG L9640-02 7/19/2005 Ba-140 8.00E+00 1.70E+01 6.20E+01 TG L9640-02 7/19/2005 Be-7 8.90E+02 1.20E+02 3.20E+02 TG L9640-02 7/19/2005 Ce-141 -7.00E+00 1.30E+01 4.40E+01 TG L9640-02 7/19/2005 Ce-144 1.20E+01 3.40E+01 1.20E+02 TG L9640-02 7/19/2005 Co-57 -2.30E+00 4.00E+00 1.40E+01 TG L9640-02 7/19/2005 Co-58 1.37E+01 8.60E+00 2.80E+01 TG L9640-02 7/19/2005 Co-60 8.70E+00 9.70E+00 3.30E+01 TG L9640-02 7/19/2005 Cr-51 -8.50E+01 8.60E+01 3.20E+02 TG L9640-02 7/19/2005 Cs-1 34 6.00E+00 7.70E+00 2.70E+01 TG L9640-02 7/19/2005 Cs-137 1.47E+01 7.30E+00 2.30E+01 TG L9640-02 7/19/2005 Fe-59 -9.OOE+00 2.60E+01 9.70E+01 TG L9640-02 7/19/2005 1-131 -7.00E+00 3.70E+01 1.30E+02 TG L9640-02 7/19/2005 1-131 2.00E+01 1.40E+01 4.30E+01 TG L9640-02 7/19/2005 K-40 4.66E+03 2.60E+02 3.70E+02 TG L9640-02 7/19/2005 La-140 1.00E+01 1.90E+01 7.10E+01 TG L9640-02 7/19/2005 Mn-54 1.09E+01 7.80E+00 2.60E+01 TG L9640-02 7/19/2005 Nb-95 -1.OOE+00 1.10E+01 4.1OE+01 TG L9640-02 7/19/2005 Ru-103 1.1OE+01 1.OOE+01 3.50E+01 TG L9640-02 7/19/2005 Ru-106 4.60E+01 7.00E+01 2.40E+02 TG L9640-02 7/19/2005 Sb-I124 -1.20E+01 1.80E+01 7.40E+01 TG L9640-02 7/19/2005 Sb-125 -2.00E+00 1.80E+01 6.50E+01 TG L9640-02 7/19/2005 Se-75 -2.00E+00 9.60E+00 3.40E+01 TG L9640-02 7/19/2005 Zn-65 2.00E+00 1.90E+01 7.00E+01 TG L9640-02 7/19/2005 Zr-95 -2.90E+01 1.60E+01 6.20E+01 TG L9768-02 8/16/2005 AcTh-228 4.20E+01 5.30E+01 1.90E+02 TG L9768-02 8/16/2005 Ag-108m 4.70E+00 8.80E+00 3.20E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-165-

Seabrook Station Radiological Environmental MonitoringProgram Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

TG 9 L9768-02 8/16/2005 Ag-110m 8.OOE+00 1.60E+01 6.10E+01 wII TG 9 L9768-02 8/16/2005 Ba-140 -7.90E+01 4.80E+01 2.60E+02 TG 9 L9768-02 8/16/2005 Be-7 8.90E+02 2.OOE+02 5.30E+02 L TG TG 9 9 L9768-02 L9768-02 8/16/2005 8/16/2005 Ce-141 Ce-144

-6.OOE+00

-9.OOE+00 1.90E+01 3.60E+01 7.00E+01 1.40E+02 1.90E+01 TG 9 L9768-02 8/16/2005 Co-57 5.OOE-01 5.30E+00 TG 9 L9768-02 8/16/2005 Co-58 -1.90E+01 1.40E+01 6.20E+01 TG 9 L9768-02 8/16/2005 Co-60 O.OOE+00 1.40E+01 5.60E+01 U- TG TG TG 9

9 9

L9768-02 L9768-02 L9768-02 8/16/2005 8/16/2005 8/16/2005 Cr-51 Cs-1 34 Cs-137 1.70E+02 1.10E+01 2.OOE+01 1.40E+02 1.60E+01 1.30E+01 4.80E+02 5.60E+01 4.30E+01 L TG TG 9

9 L9768-02 L9768-02 8/16/2005 8/16/2005 Fe-59 1-131 4.40E+01 O.OOE+00 6.30E+01 9.40E+01 2.30E+02 3.50E+02:

TG 9 L9768-02 8/16/2005 1-131 -6.70E+00 1.1OE+00 3.80E+01 L TG TG 9

9 L9768-02 L9768-02 8/16/2005 8/16/2005 K40 La-140 2.69E+03

-9.10E+01 4.OOE+02 5.60E+01 I1.00E+01 8.30E+02 3.00E+02 4.00E+01 TG 9 L9768-02 8/16/2005 Mn-54 O.OOE+O0 L TG TG TG 9

9 9

L9768-02 L9768-02 L9768-02 8/16/2005 8/16/2005 8/16/2005 Nb-95 Ru-103 Ru-1 06 7.OOE+00 3.20E+01 1.07E+02 2.60E+01 1.70E+01 8.80E+01 9.50E+01 5.50E+01 3.00E+02 TG 9 L9768-02 8/16/2005 Sb-124 O.OOE+00 3.60E+01 1.60E+02 TG 9 L9768-02 8/16/2005 Sb-125 -1.50E+01 2.90E+01 1.10E+02 TG 9 L9768-02 8/16/2005 Se-75 -1.00E+00 1.1OE+01 4.30E+0, TG 9 L9768-02 8/16/2005 Zn-65 7.00E+00 2.50E+01 9.80E+o, TG 9 L9768-02 8/16/2005 Zr-95 -2.20E+01 2.90E+01 1.20E+02 TG 9 L9951-02 9/27/2005 AcTh-228 1.34E+02 4.80E+01 1.50E+02 TG 9 L9951-02 9/27/2005 Ag-108m 1.60E+00 7.90E+00 2.80E+01 TG 9 L9951-02 9/27/2005 Ag-110m -1.80E+01 1.50E+01 6.00E+01 TG 9 L9951-02 9/27/2005 Ba-140 2.OOE+01 4.70E+01 1.80E+02 TG 9 L9951-02 9/27/2005 Be-7 2.01 E+03 1.90E+02 4.30E+02 TG 9 L9951-02 9/27/2005 Ce-141 O.OOE+00 1.30E+01 4.60E+01 TG 9 L9951-02 9/27/2005 Ce-144 -1.80E+01 3.60E+01 1.30E+02 TG 9 L9951-02 9/27/2005 Co-57 -2.20E+00 4.20E+00 1.50E+01 TG 9 L9951-02 9/27/2005 Co-58 -1.OOE+00 1.30E+01 4.70E+01 TG 9 L9951-02 9/27/2005 Co-60 2.30E+01 1.20E+01 3.80E+01 TG 9 L9951-02 9/27/2005 Cr-51 9.OOE+01 1.1OE+02 3.90E+02 TG 9 L9951-02 9/27/2005 Cs-134 2.00E+01 1.10E+01 3.50E+OI TG 9 L9951-02 9/27/2005 Cs-137 8.00E+00 1.10E+01 3.60E+OI TG 9 L9951-02 9/27/2005 Fe-59 2.40E+01 2.90E+01 1.00E+02 TG 9 L9951-02 9/27/2005 1-131 -2.77E+O0 4.80E-01 2.90E+OI TG 9 L9951-02 9/27/2005 1-131 -7.OOE+00 7.20E+01 2.60E+0:2 TG 9 L9951-02 9/27/2005 K-40 3.51 E+03 3.30E+02 6.40E+02 TG 9 L9951-02 9/27/2005 La-140 2.30E+01 5.40E+01 2.00E+02 TG 9 L9951-02 9/27/2005 Mn-54 -5.OOE+00 1.10E+01 4.20E+OI TG 9 L9951-02 9/27/2005 Nb-95 -2.00E+01 1.80E+01 7.00E+OI TG 9 L9951-02 9/27/2005 Ru-1 03 4.OOE+00 1.30E+01 4.602+0I TG 9 L9951-02 9/27/2005 Ru-106 -2.08E+02 9.00E+01 3.60E+0:2 TG 9 L9951-02 9/27/2005 Sb-124 -7.OOE+00 3.70E+01 1.50E+02 TG 9 L9951-02 9/27/2005 Sb-125 -2.OOE+00 2.50E+01 8.80E+OI

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-166-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCikg) (pCi/kg)

TG L9951-02 9/27/2005 Se-75 -1.90E+01 1.1OE+01 4.OOE+01 TG L9951-02 9/27/2005 Zn-65 2.70E+01 2.40E+01 8.30E+01 t TG L9951-02 9/27/2005 Zr-95 2.0OE+OO 2.40E+01 8.80E+01 TG L10100-0210/26/2005 AcTh-228 1.31 E+02 6.50E+01 2.OOE+02 f I TG L10100-0210/26/2005 Ag-108m -1.1 OE+01 1.1OE+01 4.30E+01 i TG L10100-0210/26/2005 Ag-1I Om -5.0OE+O0 1.60E+01 6.50E+01 TG L10100-0210/26/2005 Ba-140 6.OOE+00 2.80E+01 1.1 OE+02 TG L10100-0210/26/2005 Be-7 2.43E+03 2.50E+02 5.40E+02 TG LIO100-0210/26/2005 Ce-141 2.0OE+OO 1.70E+01 6.IOE+01 TG L10100-0210/26/2005 Ce-144 2.30E+01 6.1 OE+01 2.10E+02 TG TG L10100-0210/26/2005 L10100-0210/26/2005 Co-57 Co-58 1.47E+01 1.OOE+00 7.1 OE+OO 1.70E+01 2.30E+01 6.20E+01 I]

TG L10100-0210/26/2005 Co-60 -1.30E+01 2.10E+01 8.1 OE+01 TG L10100-0210/26/2005 Cr-51 -5.OOE+01 1.iOE+02 4.OOE+02 TG L10100-0210/26/2005 Cs-1 34 2.70E+01 1.60E+01 5.1 OE+01 TG L10100-0210/26/2005 Cs-1 37 -2.OOE+01 1.20E+01 5.OOE+01 TG LIOI00-0210/26/2005 Fe-59 2.60E+01 2.90E+01 I.OOE+02 TG LI0100-0210/26/2005 1-131 3.80E+01 1.90E+01 4.20E+01 TG L10100-0210/26/2005 1-131 -8.OOE+00 3.30E+01 1.20E+02 TG LI0I00-0210/26/2005 K-40 3.13E+03 4.OOE+02 7.80E+02 TG TG L10100-0210/26/2005 LI0100-0210/26/2005 La-140 Mn-54 6.OOE+00 9.OOE+00 3.30E+01 1.60E+01 1.30E+02 5.70E+01 L-TG TG TG L10100-0210/26/2005 L10100-0210/26/2005 L10100-0210/26/2005 Nb-95 Ru-1 03 Ru-1 06 1.50E+01

-4.00E+OO

-1.1 OE+02 1.90E+01 1.30E+01 1.20E+02 6.50E+01 5.OOE+01 4.80E+02 L

1.30E+02 TG TG TG L10100-0210/26/2005 L10100-0210/26/2005 L10100-0210/26/2005 Sb-1 24 Sb-i1 25 Se-75 3.20E+01

-8.20E+01 9.OOE+00 3.60E+01 3.40E+01 1.50E+01 1.40E+02 5.20E+01 L:

TG LI0100-0210/26/2005 Zn-65 -1.90E+01 3.1 OE+01 1.30E+02 TG TG 10 L10100-0210/26/2005 L9371-03 6/1/2005 Zr-95 AcTh-228

-1.OOE+OO 2.40E+01 2.60E+01 2.70E+01 9.90E+01 9.50E+01 LI TG 10 L9371-03 6/1/2005 Ag-108m -1.50E+00 5.OOE+00 1.90E+01 TG 10 L9371-03 6/1/2005 Ag-11 Om -6.90E+00 8.70E+00 3.70E+01 10 L9371-03 6/1/2005 Ba-140 2.20E+01 3.OOE+01 1.20E+02 L

TG TG 10 L9371-03 6/1/2005 Be-7 1.36E+03 1.40E+02 2.70E+02 TG 10 L9371-03 6/1/2005 Ce-141 -2.OOE+00 1.10E+01 3.90E+01 TG 10 L9371-03 6/1/2005 Ce-1 44 -4.OOE+01 2.30E+01 9.10E+01 TG TG 10 10 L9371-03 6/1/2005 L9371-03 6/1/2005 L9371-03 6/1/2005 Co-57 Co-58 Co-60 1.50E+00 1.49E+01 9.OOE+OO 2.70E+00 8.70E+00 8.30E+00 9.60E+00 2.80E+01 2.90E+01 U

TG 10 TG 10 L9371-03 6/1/2005 Cr-51 -9.OOE+01 6.60E+01 2.70E+02 TG 10 L9371-03 6/1/2005 Cs-134 6.0OE+OO 6.50E+00 2.30E+01 TG 10 L9371-03 6/1/2005 Cs-137 2.20E+01 9.1OE+O0 2.80E+01 TG 10 L9371-03 6/1/2005 Fe-59 -6.70E+01 2.80E+01 1.40E+02 TG 10 L9371-03 6/112005 1-131 -7.OOE+OO 1.30E+00 4.80E+01 TG 10 L9371-03 6/1/2005 1-131 1.40E+01 5.90E+01 2.10E+02 TG 10 L9371-03 6/1/2005 K-40 3.34E+03 2.90E+02 4.20E+02 TG 10 L9371-03 6/1/2005 La-140 2.50E+01 3.50E+01 1.30E+02 TG 10 L9371-03 6/1/2005 Mn-54 9.00E+OO 7.50E+00 2.50E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-167-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 i SAMPLE TYP._ STATION LSN END DATE NUCLIDE CONC (pCi/kg)

STD.DEV.

(pCi/kg)

MDC (pCi/kg)

L TG TG 10 10 L9371-03 L9371-03 6/1/2005 6/1/2005 Nb-95 Ru-1 03 1.30E+01 1.50E+00 1.20E+01 8.20E+00 4.1OE+01 3.10E+01 Ru-1 06 -8.40E+01 5.40E+01 2.30E+02 U, TG TG TG 10 10 10 L9371-03 L9371 -03 L9371-03 6/1/2005 6/11/2005 6/1/2005 Sb-I1 24 Sb-125

-2.20E+01 7.OOE+00 1.30E+01 1.50E+01 7.90E+01 5.60E+01 TG 10 L9371-03 6/1/2005 Se-75 -1.OOE-01 7.40E+00 2.70E+01 TG 10 L9371-03 6/1/2005 Zn-65 -1.80E+01 2.OOE+01 8.OOE+01 TG 10 L9371-03 6/1/2005 Zr-95 -8.OOE+00 1.40E+01 5.60E+01 TG 10 L9499-03 6/28/2005 AcTh-228 9.60E+01 6.40E+01 2.1OE+O,!

TG 10 L9499-03 6/28/2005 Ag-108m 3.OOE+00 1.40E+01 5.1 OE+O0' TG 10 L9499-03 6/28/2005 Ag-1I1m -1 .40E+01 2.OOE+01 9.30E+OI L TG TG 10 10 L9499-03 L9499-03 6/28/2005 6/28/2005 Ba-140 Be-7 3.1OE+01 9.OOE+02 2.20E+01 1.90E+02 4.1OE+OI 4.OOE+O;! t TG 10 L9499-03 6/28/2005 Ce-141 1.40E+01 1.80E+01 6.20E+OI L TG TG 10 10 10 L9499-03 L9499-03 6/28/2005 6/28/2005 6/28/2005 Ce-144 Co-57 Co-58 1.1OE+02

-2.20E+00 1.OOE+OO 5.90E+01 6.20E+00 1.80E+01 1.90E+O:'

2.40E+OI 7.1OE+OI TG L9499-03 L TG TG TG 10 10 10 L9499-03 L9499-03 L9499-03 6/28/2005 6/28/2005 6/28/2005 Co-60 Cr-51 Cs-134

-1.70E+01

-2.20E+02 3.O0E+OO 1.90E+01 1.IOE+02 1.20E+01 9.OOE+OI 5.1 OE+O2 5.1OE+OI TG 10 L9499-03 6/28/2005 Cs-1 37 1.20E+01 1.60E+01 5.90E+OI L TG TG 10 10 L9499-03 L9499-03 6/28/2005 6/28/2005 Fe-59 1-131 4.50E+01

-4.40E+01 7.20E+01 2.90E+01 2.70E+O2 1.30E+0:7 TG 10 L9499-03 6/28/2005 1-131 2.60E+01 1.80E+01 5.80E+Ol L TG TG 10 10 L9499-03 L9499-03 6/28/2005 6/28/2005 K-40 La-140 2.97E+03 3.50E+01 5.50E+02 2.50E+01 1.90E+01 1.20E+0:3 4.80E+O I 7.1OE+0O TG 10 L9499-03 6/28/2005 Mn-54 1.40E+01 TG 10 L9499-03 6/28/2005 Nb-95 -1.80E+01 2.20E+01 9.20E+o TG 10 L9499-03 6/28/2005 Ru-103 -8.0OE+OO 1.50E+01 6.30E+01 TG 10 L9499-03 6/28/2005 Ru-1 06 3.OOE+01 1.20E+02 4.60E+0:2 TG 10 L9499-03 6/28/2005 Sb-I1 24 8.30E+01 5.1OE+01 1.50E+02 TG 10 L9499-03 6/28/2005 Sb-125 -8.0OE+OO 3.70E+01 1.50E+02 TG 10 L9499-03 6/28/2005 Se-75 1.60E+01 1.60E+01 5.40E+O 1 TG 10 L9499-03 6/28/2005 Zn-65 -1.20E+01 4.30E+01 1.80E+02 TG 10 L9499-03 6/28/2005 Zr-95 -8.OOE+00 3.20E+01 1.30E+02 TG 10 L9640-03 7/19/2005 AcTh-228 5.60E+01 3.50E+01 1.20E+02 TG 10 L9640-03 7/19/2005 Ag-108m -3.40E+00 6.1 OE+OO 2.30E+01 TG 10 L9640-03 7/19/2005 Ag-11m -4.OOE+00 1.1OE+01 4.40E+01 TG 10 L9640-03 7/19/2005 Ba-140 -8.OOE+00 3.20E+01 1.30E+02 TG 10 L9640-03 7/19/2005 Be-7 6.IOE+02 1.30E+02 3.60E+02 TG 10 L9640-03 7/19/2005 Ce-141 -6.O0E+OO 1.30E+01 4.50E+01 TG 10 L9640-03 7/19/2005 Ce-144 -9.30E+01 2.80E+01 1.1 OE+02 TG 10 L9640-03 7/19/2005 Co-57 6.60E+00 3.80E+00 1.20E+01 TG 10 L9640-03 7/19/2005 Co-58 7.1OE+OO 9.70E+00 3.40E+01 TG 10 L9640-03 7/19/2005 Co-60 -1.19E+01 9.70E+00 4.1OE+01 TG 10 L9640-03 7/1912005 Cr-51 1.04E+02 8.80E+01 3.OOE+02 TG 10 L9640-03 7/19/2005 Cs-134 -1.OOE+01 I.OOE+01 4.OOE+01 TG 10 L9640-03 7/1912005 Cs-137 1.34E+01 8.90E+00 2.90E+01 TG 10 L9640-03 7/19/2005 Fe-59 -3.0OE+OO 4.70E+01 1.70E+02

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-168-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCikg)

TG 10 L9640-03 7/19/2005 1-131 -5.60E+00 1.1OE+OO 4.1OE+01 I .

TG 10 L9640-03 7/19/2005 1-131 4.30E+01 3.90E+01 1.30E+02

k..j TG 10 L9640-03 7/19/2005 K-40 3.23E+03 3.1OE+02 5.40E+02 TG 10 L9640-03 7/19/2005 La-140 -9.OOE+0O 3.60E+01 1.50E+02 TG 10 L9640-03 7/19/2005 Mn-54 -8.90E+00 9.40E+00 3.70E+01 TG 10 L9640-03 7/19/2005 Nb-95 2.OOE+00 1.20E+01 4.30E+01 TG 10 L9640-03 7/19/2005 Ru-1 03 -1.OOE+01 1.1OE+01 4.1OE+01 TG 10 L9640-03 7/19/2005 Ru-1 06 -5.70E+01 7.30E+01 2.80E+02 TG 10 L9640-03 7/19/2005 Sb-1 24 7.OOE+00 2.20E+01 8.80E+01 TG 10 L9640-03 7/19/2005 Sb-125 -1.60E+01 1.90E+01 7.20E+01 TG 10 L9640-03 7/19/2005 Se-75 1.50E+00 8.70E+00 3.1OE+01 TG 10 L9640-03 7/19/2005 Zn-65 -1.20E+01 2.50E+01 9.60E+01 TG 10 L9640-03 7/19/2005 Zr-95 7.OOE+00 1.90E+01 7.OOE+01 TG 10 L9768-03 8/16/2005 AcTh-228 2.80E+01 7.OOE+01 2.60E+02 TG 10 L9768-03 8/16/2005 Ag-1 08m -1.20E+01 1.20E+01 4.80E+01 TG 10 L9768-03 8/16/2005 Ag-1IOm -3.80E+01 2.20E+01 1.OOE+02 TG 10 L9768-03 8/16/2005 Ba-140 -7.90E+01 7.OOE+01 3.40E+02 TG 10 L9768-03 8/16/2005 Be-7 1.03E+03 2.30E+02 6.1 OE+02 TG 10 L9768-03 8/16/2005 Ce-141 -2.60E+01 2.70E+01 1.OOE+02 TG 10 L9768-03 8/16/2005 Ce-144 2.60E+01 5.60E+01 2.OOE+02 TG 10 L9768-03 8/1612005 Co-57 9.OOE-01 6.80E+00 2.50E+01 TG 10 L9768-03 8/16/2005 Co-58 1.30E+01 1.80E+01 6.70E+01 TG 10 L9768-03 8/16/2005 Co-60 -1.40E+01 2.30E+01 9.20E+01 TG 10 L9768-03 8/16/2005 Cr-51 -4.OOE+01 2.00E+02 7.40E+02 TG TG 10 10 L9768-03 L9768-03 8/16/2005 8/16/2005 Cs-1 34 Cs-1 37 3.70E+01 1.60E+01 1.60E+01 1.20E+01 4.50E+01 4.20E+01 L2 TG 10 L9768-03 8/16/2005 Fe-59 -5.50E+01 7.40E+01 3.1OE+02 TG 10 L9768-03 8/16/2005 1-131 -3.OOE+01 1.20E+02 4.60E+02 TG 10 L9768-03 8/16/2005 1-131 1.70E+00 6.20E+00 3.40E+01 TG 10 L9768-03 8/16/2005 K-40 3.64E+03 4.90E+02 8.OOE+02 TG 10 L9768-03 8/16/2005 La-140 -9.1OE+01 8.OOE+01 4.OOE+02 TG 10 L9768-03 8/16/2005 Mn-54 -2.OOE+OO 1.80E+01 6.90E+01 TG 10 L9768-03 8/16/2005 Nb-95 -1.80E+01 3.20E+01 1.20E+02 TG 10 L9768-03 8/16/2005 Ru-1 03 -3.OOE+01 2.30E+01 9.30E+01 TG 10 L9768-03 8/16/2005 Ru-106 5.OOE+01 1.30E+02 4.80E+02 TG 10 L9768-03 8/16/2005 Sb-124 -5.60E+01 4.20E+01 2.30E+02 TG 10 L9768-03 8/16/2005 Sb-125 3.1OE+01 4.20E+01 1.50E+02 TG 10 L9768-03 8/16/2005 Se-75 3.30E+01 1.80E+01 5.90E+01 TG 10 L9768-03 8/16/2005 Zn-65 -7.60E+01 5.OOE+01 2.1 OE+02 TG 10 L9768-03 8/16/2005 Zr-95 -4.OOE+00 3.50E+01 1.40E+02 TG 10 L9951-03 9/27/2005 AcTh-228 -2.1OE+01 4.50E+01 1.70E+02 TG 10 L9951-03 9/27/2005 Ag-108m 5.20E+00 9.30E+00 3.20E+01 TG 10 L9951-03 9/27/2005 Ag-1IOm O.OOE+00 1.50E+01 5.50E+01 TG 10 L9951-03 9/27/2005 Ba-140 -1.60E+01 3.80E+01 1.50E+02 TG 10 L9951 -03 9/27/2005 Be-7 4.90E+02 1.50E+02 4.50E+02 TG 10 L9951-03 9/27/2005 Ce-141 2.20E+01 2.1OE+01 6.90E+01 TG 10 L9951 -03 9/27/2005 Ce-144 2.20E+01 5.50E+01 1.90E+02 TG 10 L9951-03 9/27/2005 Co-57 1.23E+01 6.80E+00 2.20E+01 TG 10 L9951-03 9/27/2005 Co-58 -2.90E+01 1.50E+01 6.1 OE+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-169-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/kg) (pCi/kg) (pCi/kg)

Co-60 1.10E+01 1.50E+01 5.30E+01 L TG TG TG 10 10 10 L9951-03 9/27/2005 L9951-03 9/27/2005 L9951-03 9/27/2005 Cr-51 Cs-134 2.10E+02

-1.78E+01 1.40E+02 9.80E+00 4.80E+02 4.20E+01 L9951-03 9/27/2005 Cs-137 -8.OOE+00 1.1OE+01 4.30E+01 L TG TG TG 10 10 10 L9951-03 9/27/2005 L9951-03 9/27/2005 Fe-59 1-131 4.00E+00

-1.09E+02 3.10E+01 6.90E+01 1.20E+02 2.60E+02 TG 10 L9951-03 9/27/2005 1-131 -2.35E+00 4.40E-01 2.60E+01 TG 10 L9951-03 9/27/2005 K-40 5.29E+03 3.90E+02 6.60E+02 L TG TG 10 10 L9951-03 9/27/2005 L9951-03 9/27/2005 La-140 Mn-54

-1.90E+01

-2.00E+01 4.40E+01 1.20E+01 1.80E+02 4.80E+01, TG 10 L9951-03 9/27/2005 Nb-95 -1.20E+01 1.80E+01 6.90E+0,,

L TG 10 L9951-03 9/27/2005 Ru-103 Ru-106 1.70E+01

-6.00E+01 1.60E+01 1.OOE+02 5.40E+0, 3.90E+0:'

TG 10 L9951-03 9/27/2005 L9951-03 9/27/2005 Sb-124 -3.60E+01 3.10E+01 1.30E+0:!

L TG TG TG 10 10 10 L9951-03 9/27/2005 L9951-03 9/27/2005 Sb-125 Se-75 1.30E+01

-7.OOE+00 3.OOE+01 1.30E+01 1.10E+0;'

4.70E+0 1 TG 10 L9951-03 9/27/2005 Zn-65 -5.90E+01 3.50E+01 1.40E+0:'

TG 10 L9951-03 9/27/2005 Zr-95 4.30E+01 2.40E+01 7.60E+0-1 J TG 10 L1O100-0310/26/2005 AcTh-228 5.10E+01 4.OOE+01 1.40E+0;'

TG 10 L10100-0310/26/2005 Ag-108m -5.90E+00 9.20E+00 3.50E+0-1

-3.OOE+00 1.40E+01 5.40E+0 1 L TG TG TG 10 10 10 L10100-0310/26/2005 L10100-0310/26/2005 L10100-0310/26/2005 Ag-110m Ba-140 Be-7 8.00E+00 1.94E+03 1.80E+01 1.90E+02 7.00E+0-1 4.00E+0:!

TG 10 L10100-0310/26/2005 Ce-141 -1.40E+01 1.40E+01 5.30E+0-1 l TG 10 L10100-0310/2612005 Ce-144 -7.30E+01 5.10E+01 1.90E+0:'

L TG 10 10 L10100-0310/26/2005 L10100-0310/26/2005 Co-57 Co-58 5.20E+00 5.70E+00 6.20E+00 9.10E+00 2.10E+0 1 3.30E+0 1 TG Co-60 -5.00E+00 1.10E+01 4.50E+0-1 U TG TG TG 10 10 10 L10100-0310/26/2005 L10100-0310/26/2005 L10100-0310/26/2005 Cr-51 Cs-134 2.10E+02 2.10E+01 1.10E+02 1.10E+01 3.50E+02 3.40E+01 L10100-0310/26/2005 Cs-137 2.40E+01 1.20E+01 3.90E+0 1 U TG TG TG 10 10 10 L10100-0310/26/2005 L10100-0310/2612005 Fe-59 1-131 1.20E+01 1.60E+01 2.40E+01 2.80E+01 8.90E+01i 9.90E+01 TG 10 L10100-0310/26/2005 1-131 4.60E+00 8.20E+00 4.00E+0-1 L TG TG 10 10 L10100-0310/26/2005 L10100-0310/26/2005 K-40 La-140 2.22E+03 9.00E+00 2.70E+02 2.10E+01 5.40E+02:

8.00E+0 1 TG 10 L10100-0310/26/2005 Mn-54 1.10E+01 1.20E+01 4.00E+01 L TG 10 L10100-0310/26/2005 Nb-95 Ru-103 1.40E+01

-1.84E+01 1.30E+01 9.00E+00 4.50E+0 1 3.902+01 TG 10 L10100-0310/26/2005 TG 10 L10100-0310/26/2005 Ru-106 -1.00E+02 1.20E+02 4.402+02 TG 10 L10100-0310/26/2005 Sb-124 2.00E+00 2.80E+01 1.10E+02:

L TG 10 10 LIOIOO-0310/26/2005 L10100-0310/26/2005 Sb-125 Se-75 8.00E+00

-1.40E+01 2.30E+01 1.30E+01 8.40E+01 4.80E+01 TG TG 10 L10100-0310/26/2005 Zn-65 1.40E+01 1.80E+01 6.60E+01 TG 10 L10100-0310/26/2005 Zr-95 -1.60E+01 2.10E+01 8.30E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-170-

I,,

Seabrook Station Radiological Environmental Monitoring Program Data - 2005L SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 9 L8729-01 1/1912005 AcTh-228 1.36E+01 7.70E+00 2.50E+01 TM 9 L8729-01 1/19/2005 Ag-108m O.OOE+00 1.60E+00 6.1OE+00 TM 9 L8729-01 1/19/2005 Ag-110m 6.OOE-01 3.00E+00 1.10E+01 TM 9 L8729-01 1/19/2005 Ba-140 2.70E+00 3.30E+00 1.20E+01 TM 9 L8729-01 1/19/2005 Be-7 1.50E+01 1.50E+01 5.30E+01 t 1 TM 9 L8729-01 1/19/2005 Ce-141 -3.30E+00 3.10E+00 1.10E+01 TM 9 L8729-01 1/19/2005 Ce-144 4.00E+00 1.OOE+01 3.60E+01 TM 9 L8729-01 1/19/2005 Co-57 1.80E+00 1.40E+00 4.50E+00 2.30E+00 TM TM 9

9 L8729-01 L8729-01 1/19/2005 1/19/2005 Co-58 Co-60

-9.OOE-01

-6.OOE-01 2.50E+00 9.00E+00 1.OOE+01 ILJ TM 9 L8729-01 1/19/2005 Cr-51 7.00E+00 1.70E+01 6.00E+01 TM 9 L8729-01 1/19/2005 Cs-134 -4.00E-01 2.30E+00 8.90E+00 TM 9 L8729-01 1/19/2005 Cs-1 37 -4.00E-01 2.00E+00 7.80E+00 ,I TM 9 L8729-01 1/19/2005 Fe-59 5.OOE+00 8.00E+00 2.90E+01 TM 9 L8729-01 1/19/2005 1-131 -1.40E+00 3.20E+00 1.20E+01 TM 9 L8729-01 1/19/2005 1-131 4.00E-02 2.00E-01 7.70E-01 TM 9 L8729-01 1/19/2005 K-40 1.48E+03 9.50E+01 1.00E+02 TM 9 L8729-01 1/19/2005 La-140 3.10E+00 3.80E+00 1.40E+01 TM 9 L8729-01 1/19/2005 Mn-54 O.OOE+00 2.1 OE+00 8.00E+00 TM 9 L8729-01 1/19/2005 Nb-95 1.30E+00 2.30E+00 8.30E+00 TM 9 L8729-01 1/19/2005 Ru-1 03 -1.OOE+00 2.00E+00 7.60E+00 TM TM TM 9

9 9

L8729-01 L8729-01 L8729-01 1/19/2005 1/19/2005 1/19/2005 Ru-106 Sb-124 Sb-125 3.70E+01 1.06E+01 7.50E+00 1.60E+01 5.00E+00 4.90E+00 4.90E+01 1.40E+01 1.60E+01 L

TM TM TM 9

9 9

L8729-01 L8729-01 L8729-01 1/19/2005 1/19/2005 1/19/2005 Se-75 Zn-65 Zr-95

-1.60E+00

-1.06E+01 1.OOE+00 2.20E+00 6.00E+00 4.30E+00 8.20E+00 2.70E+01 1.60E+01 U

TM 9 L8865-01 2/16/2005 AcTh-228 8.20E+00 6.10E+00 2.00E+01 TM 9 L8865-01 2/16/2005 Ag-108m O.OOE+00 1.20E+00 4.20E+00 TM 9 L8865-01 2/16/2005 Ag-11O 2.50E+00 2.20E+00 7.50E+00 TM 9 L8865-01 2/16/2005 Ba-140 4.80E+00 2.80E+00 8.90E+00 TM 9 L8865-01 2/16/2005 Be-7 3.00E+00 1.20E+01 4.30E+01 TM 9 L8865-01 2/16/2005 Ce-141 -2.90E+00 2.70E+00 9.60E+00 TM 9 L8865-01 2/16/2005 Ce-144 7.00E-01 9.70E+00 3.30E+01 TM 9 L8865-01 2/16/2005 Co-57 3.00E-01 1.20E+00 4.1OE+00 TM 9 L8865-01 2/16/2005 Co-58 -1.00E+00 1.40E+00 5.50E+00 TM 9 L8865-01 2/16/2005 Co-60 4.00E-01 1.90E+00 6.80E+00 TM 9 L8865-01 2/16/2005 Cr-51 1.20E+01 1.60E+01 5.50E+01 TM 9 L8865-01 2/16/2005 Cs-134 1.60E+00 1.60E+00 5.30E+00 TM 9 L8865-01 2/16/2005 Cs-1 37 6.00E-01 1.50E+00 5.40E+00 TM 9 L8865-01 2/16/2005 Fe-59 -1.00E+00 4.90E+00 1.80E+01 TM 9 L8865-01 2/16/2005 1-131 5.20E+00 4.60E+00 1.50E+01 II TM 9 L8865-01 2/16/2005 1-131 -3.00E-02 1.60E-01 8.00E-01 TM 9 L8865-01 2/16/2005 K-40 1.31E+03 6.20E+01 6.50E+01 TM 9 L8865-01 2/16/2005 La-140 5.50E+00 3.20E+00 1.OOE+01 TM TM 9

9 L8865-01 L8865-01 2/16/2005 2/16/2005 Mn-54 Nb-95 3.00E+00

-1.20E+00 1.70E+00 1.70E+00 5.40E+00 6.60E+00 I TM 9 L8865-01 2/16/2005 Ru-1 03 -2.30E+00 1.60E+00 6.30E+00 TM 9 L8865-01 2/16/2005 Ru-106 -1.90E+01 1.40E+01 5.40E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-171-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC SAMPLE L TYPE STATION LSN L8865-01 DATE 2/16/2005 NUCLIDE Sb-1 24 (pCi/L) 3.1OE+OO (pCi/L) 3.10E+00 (pCi/L) 1.1OE+01 TM 9 TMI 9 L8865-01 2/16/2005 Sb-125 -1.90E+00 3.60E+00 1.30E+01 2.1 OE+00 7.00E+03

! TNI TNI TM 9

9 9

L8865-01 L8865-01 L8865-01 2/16/2005 2/16/2005 2/16/2005 Se-75 Zn-65 Zr-95 3.80E+00

-6.60E+00

-3.80E+00 3.80E+00 2.80E+00 1.5OE+01 1.1OE+01 TMI 9 L8980-01 3/16/2005 AcTh-228 9.40E+00 6.60E+00 2.20E+01 4.1 OE+OD f' TMI TMI 9

9 L8980-01 L8980-01 3/16/2005 3/16/2005 Ag-108m Ag- 1Om 1.30E+00

-2.OOE-01 1.20E+00 2.1OE+OO 7.90E+OD TMI 9 L8980-01 3/16/2005 Ba-140 -1.20E+00 2.1OE+00 9.OOE+OO TMI 9 L8980-01 3/16/2005 Be-7 -2.90E+01 1.30E+01 5.20E+01 TMI 9 L8980-01 3/16/2005 Ce-141 -3.90E+00 2.40E+00 8.90E+OO TNI 9 L8980-01 3/16/2005 Ce-144 8.80E+00 8.OOE+00 2.70E+01 TM 9 L8980-01 3/16/2005 Co-57 -5.OOE-01 1.OOE+00 3.60E+00 L TMI TM 9 9 L8980-01 L8980-01 3/16/2005 3/16/2005 Co-58 Co-60

-3.70E+00

-I .OOE-01 6.OOE+00 1.80E+00 1.80E+00 1.10E+01 7.5OE+OO 6.90E+00 3.90E+01 TM 9 L8980-01 3/16/2005 Cr-51 TNI 9 L8980-01 3/16/2005 Cs-1 34 6.0OE-01 1.90E+00 7.OOE+OO TMI 9 L8980-01 3/16/2005 Cs-1 37 1.50E+00 1.50E+00 5.20E+00 TM 9 L8980-01 3/16/2005 Fe-59 6.40E+00 5.OOE+00 1.70E+01 1-131 5.OOE-01 2.50E-01 6.1 OE-01 L TM TMI TM 9

9 9

L8980-01 L8980-01 L8980-01 3/16/2005 3/16/2005 3/16/2005 1-131 K-40

-1.OOE+O0 1.51 E+03 2.40E+00 7.70E+01 9.1OE+00 7.70E+01 TMl 9 L8980-01 3/16/2005 La-140 -1.40E+00 2.40E+00 1.OOE+01 TNM 9 L8980-01 3/16/2005 Mn-54 -1.1OE+00 1.80E+00 6.80E+00 TM 9 L8980-01 3/16/2005 Nb-95 1 .90E+00 1.70E+00 5.70E+00 TMI 9 L8980-01 3/16/2005 Ru-1 03 -1.50E+00 1 .70E+00 6.30E+O0 TM 9 L8980-01 3/16/2005 Ru-106 -2.OOE+00 1.40E+01 5.20E+01 TM 9 L8980-01 3/16/2005 Sb-1 24 4.OOE+00 3.40E+00 1.20E+01 L TMl TM 9

9 L8980-01 L8980-01 3/16/2005 3/16/2005 Sb-1 25 Se-75

-1.OOE+OO 8.OOE-01 4.OOE+00 1.80E+00 I .50E+01 6.40E+O0 TMl 9 L8980-01 3/16/2005 Zn-65 -1.15E+01 4.60E+00 1.90E+Cl TMl 9 L8980-01 3/16/2005 Zr-95 6.20E+00 3.20E+00 I.OOE+C 1 Thl 9 L9123-01 4/13/2005 AcTh-228 6.40E+00 5.50E+00 1.90E+G1 TMl 9 L9123-01 4/13/2005 Ag-1 08m o.OOE+00 1.1OE+oo 4.10E+C0 TMI 9 L9123-01 4/13/2005 Ag-11Om O.OOE+OO 2.20E+00 8.OOE+OO TMI 9 L9123-01 4/13/2005 Ba-140 1.30E+00 2.IOE+00 7.70E+C o TMI 9 L9123-01 4/13/2005 Be-7 6.OOE+00 1.1OE+01 3.80E+C1 TM 9 L9123-01 4/13/2005 .Ce-141 2.40E+00 1.70E+00 5.70E+C0O TM 9 L9123-01 4/13/2005 Ce-144 -3.90E+00 8.50E+00 3.OOE+01l TMl 9 L9123-01 4/1312005 Co-57 -8.OOE-01 1.1OE+00 3.90E+C0 TMl 9 L9123-01 4/13/2005 Co-58 -3.OOE-01 1.40E+00 5.1 OE+O0 TM 9 L9123-01 4/13/2005 Co-60 2.1OE+O0 1.50E+00 4.90E+CO TMI 9 L9123-01 4/13/2005 Cr-51 -1.OOE+O0 1.20E+01 4.40E+01 TM 9 L9123-01 4/13/2005 Cs-134 6.OOE-01 1.30E+00 4.BOE+C0O TM0 9 L9123-01 4/13/2005 Cs-1 37 2.30E+00 1.70E+00 5.60E+CO TM 9 L9123-01 4/13/2005 Fe-59 6.90E+00 4.80E+00 1.60E+01 TMI 9 L9123-01 4/13/2005 1-131 -3.50E+00 2.40E+00 9.1 OE+C'O TMI 9 L9123-01 4/13/2005 1-131 -8.40E-02 1.40E-02 5.OOE-tl1 TMI 9 L9123-01 4/13/2005 K-40 1 .32E+03 6.30E+01 6.60E+CI1

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-172-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 9 L9123-01 4/13/2005 La-140 1.50E+00 2.40E+00 8.80E+00 TM 9 L9123-01 4/13/2005 Mn-54 2.OOE-01 1.50E+00 5.30E+00 TM 9 L9123-01 4/13/2005 Nb-95 -1.30E+00 1.60E+00 6.OOE+OO TM 9 L9123-01 4/13/2005 Ru-1 03 -3.1 OE+00 1.50E+00 5.90E+00 TM 9 L9123-01 4/13/2005 Ru-1 06 -5.OOE+00 1.30E+01 4.70E+01 TM 9 L9123-01 4/13/2005 Sb-124 5.1OE+00 3.OOE+00 9.50E+00 TM 9 L9123-01 4/13/2005 Sb-125 -3.1 OE+OO 3.60E+00 1.30E+01 TM 9 L9123-01 4/13/2005 Se-75 3.90E+00 1.90E+00 6.20E+00 TM 9 L9123-01 4/13/2005 Zn-65 -3.80E+00 3.60E+00 1.40E+01 j TM 9 L9123-01 4/13/2005 Zr-95 -3.20E+00 2.20E+00 8.90E+00 TM 9 L9209-01 4/27/2005 AcTh-228 7.90E+00 6.40E+00 2.20E+01 TM 9 L9209-01 4/27/2005 Ag-1 08m -8.OOE-01 1.20E+00 4.60E+00 TM 9 L9209-01 4/27/2005 Ag-11Om -1.40E+00 2.1 OE+00 8.30E+00 TM 9 L9209-01 4/27/2005 Ba-140 -1.20E+00 2.80E+00 1.1OE+01 TM 9 L9209-01 4/27/2005 Be-7 3.OOE+00 1.30E+01 4.50E+01 TM 9 L9209-01 4/27/2005 Ce-141 -1.OOE+00 2.50E+00 8.70E+00 I TM 9 L9209-01 4/27/2005 Ce-144 6.OOE+OO 8.80E+00 3.OOE+01 TM TM TM 9

9 9

L9209-01 L9209-01 L9209-01 4/27/2005 4/27/2005 4/27/2005 Co-57 Co-58 Co-60

-1.30E+O0 7.OOE-01

-2.50E+00 1.20E+00 1.60E+00 2.OOE+00 4.20E+00 5.90E+00 8.30E+O0 Ij TM 9 L9209-01 4/27/2005 Cr-51 3.OOE+00 1.40E+01 5.OOE+01 TM 9 L9209-01 4/27/2005 Cs-1 34 1.8OE+OO 1.50E+00 5.OOE+O0 TM 9 L9209-01 4/27/2005 Cs-137 3.OOE+00 1.70E+00 5.50E+00 TM 9 L9209-01 4/27/2005 Fe-59 2.OOE-01 5.40E+00 2.OOE+01

-1.40E-02 9.20E-02 4.OOE-01 TM TM TM 9

9 9

L9209-01 L9209-01 L9209-01 4/27/2005 4/27/2005 4/27/2005 1-131 1-131 K-40 2.50E+00 1.37E+03 2.80E+00 7.30E+01 9.60E+00 6.90E+01

L TM 9 L9209-01 4/27/2005 La-140 -1.40E+00 3.20E+00 1.30E+01 TM TM 9

9 L9209-01 L9209-01 4/27/2005 4/27/2005 Mn-54 Nb-95

-2.40E+00

-3.90E+00 1.70E+00 1.60E+00 6.80E+00 7.1OE+00 L

TM 9 L9209-01 4/27/2005 Ru-103 -2.OOE-01 1.70E+00 6.1OE+00 TM 9 L9209-01 4/27/2005 Ru-106 2.OOE+OO 1.40E+01 5.OOE+01 TM 9 L9209-01 4/27/2005 Sb-124 -2.90E+O0 3.50E+00 1.60E+01 TM 9 L9209-01 4/27/2005 Sb-125 5.OOE-01 4.OOE+00 1.40E+01 TM 9 L9209-01 4/27/2005 Se-75 -1.20E+00 1.80E+00 6.60E+00 TM 9 L9209-01 4/27/2005 Zn-65 5.60E+00 3.BOE+00 1.30E+01 TM 9 L9209-41 4/27/2005 Zr-95 -1.60E+00 3.20E+00 1.20E+01 TM 9 L9263-01 5/12/2005 AcTh-228 5.50E+00 9.OOE+00 3.20E+01 TM 9 L9263-01 5/12/2005 Ag-108m 1.OOE+00 1.90E+00 6.70E+00 TM 9 L9263-01 5/12/2005 Ag-110m -2.OOE-01 2.80E+OO 11.OOE+01 TM 9 L9263-01 5/12/2005 Ba-140 4.50E+00 4.20E+00 1.40E+01 TM 9 L9263-01 5/12/2005 Be-7 -2.70E+01 1.80E+01 6.90E+01 TM 9 L9263-01 5/12/2005 Ce-141 2.60E+00 3.30E+00 1.10E+01 TM 9 L9263-01 5/12/2005 Ce-144 8.0OE+O0 1.1OE+01 3.70E+01 TM 9 L9263-01 5/12/2005 Co-57 -1.50E+00 1.40E+00 5.1OE+00 TM 9 L9263-01 5/12/2005 Co-58 5.1 OE+OO 2.70E+00 8.50E+OO TM 9 L9263-01 5/12/2005 Co-60 -1.70E+O0 2.50E+00 I.OOE+01 TM 9 L9263-01 5/12/2005 Cr-51 -1.70E+01 1.80E+01 6.80E+01 TM 9 L9263-01 5/12/2005 Cs-1 34 -7.40E+00 3.OOE+OO 1.20E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-173-

Seabrook Station Radiological Environmental Monitoring !Program Data - 2005 CONC STD.DEV. MDC L SAMPLE TYPE STATION LSN END DATE NUCLIDE (pCi/L) (pCi/L) (pCi/)

TM 9 L9263-01 5/12/2005 Cs-137 -1.50E+00 2.10E+00 8.20E+0O TM 9 L9263-01 5/12/2005 Fe-59 -2.50E+00 7.40E+00 2.80E+OI TM 9 L9263-01 5/12/2005 1-131 -9.50E-02 1.70E-02 5.90E-OI TM 9 L9263-01 5/12/2005 1-131 -6.50E+00 4.80E+00 1.80E+OI TM 9 L9263-01 5/12/2005 K-40 1.55E+03 9.10E+01 1.10E+O2

TM 9 L9263-01 5/12/2005 La-140 5.20E+00 4.80E+00 1.70E+OI TM 9 L9263-01 5112/2005 Mn-54 -1.90E+00 2.60E+00 9.90E+0) 9 L9263-01 5/12/2005 Nb-95 -1.70E+00 3.OOE+00 1.10E+O1 U TM TM TM 9

9 L9263-01 L9263-01 5/12/2005 5/12/2005 Ru-103 Ru-106

-3.OOE-01 1.50E+01 2.30E+00 1.80E+01 8.30E+00 6.10E+01 TM 9 L9263-01 5/12/2005 Sb-124 -1.40E+00 4.90E+00 2.00E+O I TM 9 L9263-01 5/12/2005 Sb-125 7.70E+00 5.80E+00 1.90E+O I TM 9 L9263-01 5/12/2005 Se-75 -2.10E+00 2.30E+00 8.30E+0')

TM 9 L9263-01 5/12/2005 Zn-65 O.O0E+00 5.90E+00 2.20E+O I TM 9 L9263-01 5/12/2005 Zr-95 5.30E+00 4.90E+00 1.70E+O I L TM TN 9

9 L9309-01 L9309-01 5/25/2005 5/25/2005 AcTh-228 Ag-108m

-2.30E+00 1.90E+00 8.50E+00 2.1OE+00 3.40E+O 1 7.40E+0')

TM 9 L9309-01 5/25/2005 Ag-110m -7.00E-01 4.00E+00 1.50E+OI TM. 9 L9309-01 5/25/2005 Ba-140 5.60E+00 3.90E+00 1.30E+01 TN 9 L9309-01 5/25/2005 Be-7 O.O0E+OO 2.10E+01 7.80E+01 Tl/ 9 L9309-01 5/25/2005 Ce-141 1.90E+00 3.70E+00 1.30E+01 TM W 9 L9309-01 5/25/2005 Ce-144 6.00E+00 1.10E+01 3.80E+01 TI. 9 L9309-01 5/25/2005 Co-57 -9.OOE-01 1.40E+00 5.30E+O)

TIV 9 L9309-01 5/25/2005 Co-58 2.20E+00 3.30E+00 1.20E+01 TV 9 L9309-01 5/25/2005 Co-60 9.00E-01 3.40E+00 1.30E+01 L TM. 9 L9309-01 5/25/2005 Cr-51 Cs-134 3.00E+00 2.10E+00 1.90E+01 3.00E+00 7.00E+01 1.10E+01 TM 9 L9309-01 5/25/2005 TM. 9 L9309-01 5/25/2005 Cs-137 4.90E+00 2.70E+00 8.60E+00 L TM TM.

9 9

L9309-01 L9309-01 5/25/2005 5/25/2005 Fe-59 1-131 4.10E+00 O.OOE+00 9.40E+00 1.20E-01 3.50E+01 7.40E-01 TMVl 9 L9309-01 5/25/2005 1-131 -4.00E-01 4.20E+00 1.60E+01 Tli 9 L9309-01 5/25/2005 K-40 1.52E+03 1.20E+02 1.60E+02

TNV 9 L9309-01 5/25/2005 La-140 6.40E+00 4.50E+00 1.50E+01 TIU 9 L9309-01 5/25/2005 Mn-54 9.OOE-01 2.50E+00 9.30E+OD TM 9 L9309-01 5/25/2005 Nb-95 3.90E+00 3.60E+00 1.20E+01 TM 9 L9309-01 5/25/2005 Ru-103 3.00E+00 2.60E+00 8.90E+00 TM 9 L9309-01 5/25/2005 Ru-106 -4.00E+00 2.40E+01 9.30E+01 TM 9 L9309-01 5/25/2005 Sb-124 -6.70E+00 6.70E+00 3.10E+01 TIM 9 L9309-01 5/25/2005 Sb-125 3.90E+00 5.90E+00 2.10E+01 TM 9 L9309-01 5/25/2005 Se-75 -2.50E+00 2.60E+00 1.00E+01 TM 9 L9309-01 5/25/2005 Zn-65 O.O0E+00 6.10E+00 2.40E+01 TM 9 L9309-01 5/25/2005 Zr-95 -7.60E+00 5.80E+00 2.40E+01 TMI 9 L9400-01 6/8/2005 AcTh-228 8.90E+00 7.50E+00 2.50E+01 TV 9 L9400-01 6/8/2005 Ag-108m -9.OOE-01 1.50E+00 5.40E+00 TM 9 L9400-01 6/8/2005 Ag-11Om -1.60E+00 2.60E+00 9.80E+00 TM 9 L9400-01 6/8/2005 Ba-140 -1.20E+00 3.50E+00 1.40E+01 TM. 9 L9400-01 6/8/2005 Be-7 -1.50E+01 1.60E+01 5.80E+01 TMV. 9 L9400-01 6/8/2005 Ce-141 -1.04E+01 2.80E+00 1.10E+01 TIV 9 L9400-01 6/8/2005 Ce-144 2.00E+00 1.00E+01 3.50E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-174-

1-1 Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/1.) (pCi/L) (pCilL)

TM L9400-01 6/8/2005 Co-57 -9.OOE-01 1.30E+00 4.70E+00 LI TM L9400-01 6/8/2005 Co-58 -3.70E+00 2.OOE+00 8.OOE+00 TM L9400-01 6/8/2005 Co-60 3.00E-01 2.1OE+00 7.70E+00 TM L9400-01 6/8/2005 Cr-51 -3.50E+01 1.90E+01 7.OOE+01 TM L9400-01 6/8/2005 Cs-134 -2.40E+00 1.90E+00 7.40E+00 TM L9400-01 6/8/2005 Cs-137 -3.1OE+00 1.80E+00 7.1 OE+00 TM L9400-01 6/8/2005 Fe-59 8.80E+00 6.30E+00 2.1 OE+01 TM L9400-01 6/8/2005 1-131 -1.03E-01 1.90E-02 7.1 OE-01 TM L9400-01 6/8/2005 1-131 O.OOE+00 4.40E+00 1.60E+01 TM L9400-01 6/8/2005 K-40 1.44E+03 7.OOE+01 8.20E+01

j TM L9400-01 618/2005 La-140 -1.40E+00 4.OOE+0O 1.60E+01 L9400-01 618/2005 Mn-54 -1.70E+00 1.70E+00 6.60E+00 j ?

TM TM L9400-01 6/8/2005 Nb-95 3.40E+00 2.60E+00 8.50E+00 TM L9400-01 6/8/2005 Ru-103 -1.70E+00 2.20E+00 8.OOE+00 TM L9400-01 6/8/2005 Ru-1 06 1.OOE+00 1.70E+01 6.20E+01 LJ TM L9400-01 6/8/2005 Sb-124 1.70E+00 3.80E+00 1.40E+01 TM L9400-01 6/8/2005 Sb-125 -1.70E+00 4.80E+00 1.70E+01 TM L9400-01 6/8/2005 Se-75 -8.OOE-01 2.30E+00 8.10E+00 TM L9400-01 6/8/2005 Zn-65 2.15E+01 8.60E+00 2.70E+01 TM L9400-01 6/8/2005 Zr-95 4.80E+00 3.40E+00 1.10E+01 TM L9474-01 6/22/2005 AcTh-228 9.50E+00 4.90E+00 1.60E+01 TM L9474-01 6/22/2005 Ag-108m 2.90E-01 9.50E-01 3.30E+00 TM L9474-01 6/22/2005 Ag-110m 3.10E+00 1.80E+00 5.90E+00 TM L9474-01 6/22/2005 Ba-140 6.OOE-01 2.30E+00 8.20E+00 TM TM L9474-01 L9474-01 6/2212005 6/22/2005 Be-7 Ce-141 3.OOE+00 1.00E+00 1.OOE+01 1.80E+00 3.50E+01 6.OOE+00 U TM TM TM L9474-01 L9474-01 L9474-01 6/22/2005 6/22/2005 6/22/2005 Ce-144 Co-57 Co-58 3.60E+00 6.50E-01

-1.10E+00 6.1 OE+00 7.80E-01 1.20E+00 2.OOE+01 2.60E+00 4.30E+00 U

TM L9474-01 6/22/2005 Co-60 -1.20E+00 1.40E+00 5.10E+00 TM L9474-01 6122/2005 Cr-51 -1.40E+01 1.10E+01 4.OOE+01 TM L9474-01 6/22/2005 Cs-134 1.70E+00 1.30E+00 4.20E+00 TM L9474-01 6/22/2005 Cs-1 37 2.OOE+00 1.40E+00 4.50E+00 TM L9474-01 6/22/2005 Fe-59 -4.70E+00 4.30E+00 1.60E+01 TM L9474-01 6/22/2005 1-131 -5.70E+00 3.30E+00 1.20E+01 TM L9474-01 6/22/2005 1-131 -1.47E-01 2.60E-02 8.20E-01 TM L9474-01 6/22/2005 K-40 1.53E+03 4.90E+01 6.20E+01 6/22/2005 La-1 40 2.60E+00 9.40E+00 TM TM TM L9474-01 L9474-01 L9474-01 6/22/2005 6/22/2005 Mn-54 Nb-95 7.OOE-01 2.OOE-01 2.1 OE+00 1.20E+00 1.40E+00 4.30E+00 4.60E+00 U

TM L9474-01 6122/2005 Ru-1 03 -1.00E-01 1.30E+00 4.40E+00 TM L9474-01 6/22/2005 Ru-1 06 -1.70E+01 1.1OE+01 4.1 OE+01 TM L9474-01 6/22/2005 Sb-124 -4.OOE-01 2.60E+00 9.60E+00 TM L9474-01 6/22/2005 Sb-1 25 6.20E+00 2.80E+00 9.1 OE+00 TM L9474-01 6/22/2005 Se-75 1.20E+00 1.40E+00 4.80E+00 TM L9474-01 6/22/2005 Zn-65 -1 .04E+01 3.20E+00 1.20E+01 TM L9474-01 6/2212005 Zr-95 O.OOE+00 2.1OE+00 7.30E+00 TM L9528-01 7/612005 AcTh-228 8.60E+00 6.60E+00 2.20E+01 TM L9528-01 7/6/2005 Ag-108m 2.OOE+00 1.30E+00 4.30E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-175-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 CONC STD.DEV. MDC SAMPLE END L TYPE TM STATION 9

LSN L9528-01 DATE 7/6/2005 NUCLIDE Ag-110m (pCiIL)

-4.80E+00 (pCi/L) 3.20E+00 (pCi/L) 1.20E+OI 1.30E+00 2.40E+00 8.70E+0)

L 7/6/2005 TM 9 L9528-o1 Ba-140 TIV 9 L9528-01 7/6/2005 Be-7 -7.OOE+00 1.20E+01 4.50E+O1 TMV 9 L9528-01 7/6/2005 Ce-141 -1.80E+00 3.80E+00 1.30E+O1 TM 9 L9528-01 7/6/2005 Ce-144 -1.50E+00 8.00E+OO 2.80E+Ol TMV 9 L9528-01 7/6/2005 Co-57 -3.00E-01 1.OOE+00 3.60E+0O TMV 9 L9528-01 7/6/2005 Co-58 -2.40E+00 1.50E+00 5.90E+O)

TM 9 L9528-01 7/6/2005 Co-60 -3.00E-01 1.70E+00 6.50E+O)

L TMV TMV 9

9 L9528-01 L9528-01 7/6/2005 7/6/2005 Cr-51 Cs-134

-9.OOE+OO 2.OOE-01 1.40E+01 1.70E+00 5.1OE+01 6.00E+O0

! TMl TMV 9

9 L9528-01 L9528-01 7/6/2005 7/6/2005 Cs-137 Fe-59 1.80E+00

-6.90E+00 1.70E+00 5.60E+00 5.90E+0) 2.20E+01 TMl 9 L9528-01 7/6/2005 1-131 O.OOE+OO 1.1OE-01 6.60E-01 TMV 9 L9528-01 7/6/2005 1-131 -2.00E-01 3.00E+00 1.1OE+01 TM 9 L9528-01 7/6/2005 K-40 1.32E+03 6.40E+01 8.40E+01 TMV 9 L9528-01 7/6/2005 La-140 1.50E+00 2.80E+OO 1.00E+01 TM 9 L9528-01 7/6/2005 Mn-54 -2.40E+00 1.70E+00 6.50E+OD TMV 9 L9528-01 7/6/2005 Nb-95 -1.20E+00 1.80E+00 6.70E+00 TMl 9 L9528-01 7/6/2005 Ru-1 03 -4.00E+OO 1.60E+00 6.30E+00 TM 9 L9528-01 7/6/2005 Ru-1 06 9.00E+0O 1.50E+01 5.10E+01 TNl 9 L9528-01 7/6/2005 Sb-124 2.20E+00 3.20E+00 1.20E+01 L TM TMl TMl 9

9 9

L9528-01 L9528-01 L9528-01 7/6/2005 7/6/2005 7/6/2005 Sb-125 Se-75 Zn-65

-4.30E+00

-2.OOE-01 5.OOE-01 4.20E+00 1.90E+00 3.90E+00 1.50E+01 6.80E+00 1.40E+01 L9528-01 7/6/2005 Zr-95 -1.80E+00 2.90E+00 1.10E+01 L TM TMl TM 9

9 9

L9624-01 L9624-01 7/20/2005 7/20/2005 AcTh-228 Ag-1 08m

-1.70E+00 1.60E+00 5.90E+00 1.1OE+00 2.10E+01 3.80E+00 TMI 9 L9624-01 7/20/2005 Ag-110m 3.60E+00 1.80E+00 5.80E+00 Thl 9 L9624-01 7/20/2005 Ba-140 -2.O0E+OO 3.30E+00 1.30E+01 TMI 9 L9624-01 7/20/2005 Be-7 6.OOE+00 1.30E+01 4.30E+01 TMI 9 L9624-01 7/20/2005 Ce-141 1.1OE+00 1.70E+00 5.90E+00 TM 9 L9624-01 7/20/2005 Ce-144 3.90E+00 6.40E+00 2.20E+01 TMI 9 L9624-01 7/20/2005 Co-57 -3.50E-01 7.70E-01 2.70E+00 TMI 9 L9624-01 7/20/2005 Co-58 -1.OOE-01 1.80E+00 6.40E+00 TMl 9 L9624-01 7/20/2005 Co-60 -6.OOE-01 1.90E+00 6.80E+00 TMI 9 L9624-01 7/20/2005 Cr-51 -1.1OE+01 1.20E+01 4.40E+01 TMI 9 L9624-01 7/20/2005 Cs-1 34 2.70E+00 1.60E+00 5.40E+CO TM 9 L9624-01 7/20/2005 Cs-1 37 1.40E+00 1.40E+00 4.90E+CO TMI 9 L9624-01 7/20/2005 Fe-59 -3.OOE-01 5.90E+00 2.10E+01 TM 9 L9624-01 7/20/2005 1-131 -4.90E+00 3.30E+00 1.20E+01 TMI 9 L9624-01 7/20/2005 1-131 -4.88E-02 9.40E-03 6.00E-C1 TM 9 L9624-01 7/20/2005 K-40 1.42E+03 6.10E+01 7.60E+01 TM 9 L9624-01 7/20/2005 La-140 -2.30E+00 3.70E+00 1.40E+01 TM 9 L9624-01 7/20/2005 Mn-54 6.OOE-01 1.60E+00 5.70E+(10 TM 9 L9624-01 7/20/2005 Nb-95 9.OOE-01 1.80E+00 6.20E+C1O TM 9 L9624-01 7/20/2005 Ru-103 8.OOE-01 1.60E+00 5.70E+(0 TM 9 L9624-01 7/20/2005 Ru-106 2.1OE+01 1.20E+01 3.80E+01 TM 9 L9624-01 7/20/2005 Sb-124 O.OOE+00 3.60E+00 1.40E+41 Thl 9 L9624-01 7/20/2005 Sb-125 9.00E-01 3.70E+00 1.30E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-176-

- I Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCiIL (pCi/L) (pCi/L)

TM L9624-01 7/20/2005 Se-75 -3.OOE-01 *1.40E+00 5.OOE+00 TM L9624-01 7/20/2005 Zn-65 2.80E+00 4.20E+00 1.40E+01 U

TM L9624-01 7/2012005 Zr-95 2.00E+00 2.80E+00 9.80E+00 TM L9702-01 8/3/2005 AcTh-228 7.20E+00 6.30E+00 2.1OE+01 TM L9702-01 8/3/2005 Ag-108m 9.00E-01 1.1OE+OO 3.80E+00 U.

TM L9702-01 8/3/2005 Ag-1I Om -1.0OE+OO 2.20E+00 7.90E+00 TM L9702-01 8/3/2005 Ba-140 1.80E+00 3.30E+00 1.20E+01 I

TM L9702-01 8/3/2005 Be-7 *7.OOE+O0 1.10E+01 4.IOE+01 TM L9702-01 8/3/2005 Ce-1 41 -2.60E+00 2.1OE+00 7.20E+00 2.40E+01 L TM L9702-01 8/3/2005 Ce-144 -6.OOE-01 6.90E+00 TM L9702-01 8/3/2005 Co-57 -3.20E-01 8.80E-01 3.0OE+OO TM L9702-01 8/3/2005 Co-58 1.70E+00 1.60E+00 5.30E+00 TM L9702-01 8/3/2005 Co-60 1.10E+00 2.30E+00 7.90E+00 TM L9702-01 8/3/2005 Cr-51 -1.OOE+01 1.40E+01 4.90E+01 TM L9702-01 8/3/2005 Cs-1 34 8.OOE-01 1.40E+00 5.0OE+OO TM L9702-01 8/3/2005 Cs-1 37 -9.OOE-01 1.50E+00 5.30E+00 TM L9702-01 8/3/2005 Fe-59 1.42E+01 5.40E+00 1.60E+01 TM L9702-01 8/3/2005 1-131 3.50E+00 3.50E+00 1.20E+01 TM L9702-01 8/3/2005 1-131 -1.30E-02 9.70E-02 6.00E-01 I I TM L9702-01 8/3/2005 K-40 1.23E+03 5.60E+01 8.20E+01 TM L9702-01 8/3/2005 La-140 2.OOE+OO 3.80E+00 1.40E+01 TM L9702-01 8/3/2005 Mn-54 -1.OOE-01 1.40E+00 5.0OE+OO TM L9702-01 8/3/2005 Nb-95 2.20E+00 1.60E+00 5.40E+00 TM L9702-01 8/3/2005 Ru-103 -4.OOE-01 1.50E+00 5.20E+00 L9702-01 8/3/2005 Ru-106 -3.OOE+OO 1.40E+01 5.OOE+01 TM TM TM L9702-01 L9702-01 8/3/2005 8/3/2005 Sb-1 24 Sb-125

-1.20E+00

-6.60E+00 3.80E+00 3.30E+00 1.40E+01 1.30E+01 U

TM L9702-01 8/3/2005 Se-75 2.O0E+OO 1.40E+00 4.80E+00 TM TM L9702-01 L9702-01 8/3/2005 8/3/2005 Zn-65 Zr-95 3.30E+00 1.20E+00 3.70E+00 2.70E+00 1.20E+01 9.40E+00 Li TM L9766-01 8/17/2005 AcTh-228 -1.70E+00 5.80E+00 2.1OE+01 TM L9766-01 8/17/2005 Ag-108m 1.10E+00 1.OOE+OO 3.50E+00 TM L9766-01 8/17/2005 Ag-110m 1.OOE+OO 2.O0E+OO 6.90E+00 TM L9766-01 8/17/2005 Ba-140 4.OOE-01 2.60E+00 9.60E+00 TM TM TM L9766-01 L9766-01 L9766-01 8/17/2005 8/17/2005 8/17/2005 Be-7 Ce-141 Ce-144

-3.OOE+00 9.OOE-01 7.30E+00 1.20E+01 2.1OE+00 6.40E+00 4.20E+01 7.1OE+OO 2.1OE+01 U

TM L9766-01 8/17/2005 Co-57 5.1OE-01 7.50E-01 2.50E+00 TM L9766-01 8/17/2005 Co-58 11.OOE-01 1.60E+00 5.80E+00 TM L9766-01 8/17/2005 Co-60 1.90E+00 1.70E+00 5.80E+00 TM L9766-01 8/17/2005 Cr-51 2.70E+01 1.20E+01 3.90E+01 TM L9766-01 8/17/2005 Cs-134 3.50E+00 1.70E+OO 5.50E+00 TM L9766-01 8/17/2005 Cs-137 -1.1OE+00 1.30E+00 4.80E+00 TM L9766-01 8/17/2005 Fe-59 8.OOE-01 5.40E+00 1.90E+01 TM L9766-01 8/17/2005 1-131 -5.OOE-01 3.O0E+OO 1.1OE+01 TM L9766-01 8/17/2005 1-131 -1.90E-01 3.1OE-02 8.OOE-01 TM L9766-01 8/17/2005 K-40 1.23E+03 5.60E+01 7.40E+01 TM L9766-01 8/17/2005 La-140 5.OOE-01 3.OOE+00 1.10E+01 TM L9766-01 8/17/2005 Mn-54 -1.80E+00 1.60E+00 5.80E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-177-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCilL)

TM 9 L9766-01 8/17/2005 Nb-95 -1.50E+00 1.70E+00 6.40E+00 TM 9 L9766-01 8/17/2005 Ru-103 4.00E+00 1.50E+00 4.70E+00 U TM 9 L9766-01 8/17/2005 Ru-106 2.10E+01 1.20E+01 4.30E+00 4.00E+01 1.30E+01 TM 9 L9766-01 8/17/2005 Sb-124 1.17E+01 TM 9 L9766-01 8/17/2005 Sb-125 6.50E+00 3.30E+00 1.10E+01 L TM TM 9

9 L9766-01 L9766-01 8/17/2005 8/17/2005 Se-75 Zn-65 7.00E-01 7.00E-01 1.40E+00 3.80E+00 4.90E+00 1.40E+01 TM 9 L9766-01 8/17/2005 Zr-95 3.00E-01 2.70E+00 9.40E+OO L TM 9 L9880-01 9/14/2005 AcTh-228 -3.10E+00 6.30E+00 2.30E+01 3.90E+00 TM 9 L9880-01 9/14/2005 Ag-108m 1.30E+00 1.20E+00 TM 9 L9880-01 9/14/2005 Ag-110m -1.90E+00 2.30E+00 8.40E+OC TM 9 L9880-01 9/1412005 Ba-140 -2.40E+00 2.70E+00 1.IOE+01 1 TM 9 L9880-01 9/14/2005 Be-7 3.00E+00 1.20E+01 4.30E+01 TM 9 L9880-01 9/14/2005 Ce-141 -2.80E+00 3.30E+00 1.IOE+01 TM 9 L9880-01 9/14/2005 Ce-144 -4.10E+00 7.1OE+00 2.50E+01 L TM 9 L9880-01 9/14/2005 Co-57 -1.52E+00 8.90E-01 3.1OE+OO TM 9 L9880-01 9/14/2005 Co-58 8.OOE-01 1.40E+00 5.OOE+OCO TM 9 L9880-01 9/14/2005 Co-60 -3.20E+00 2.00E+00 7.70E+OCO L TM 9 L9880-01 9/14/2005 9/14/2005 Cr-51 Cs-134 1.80E+01 1.90E+00 1.40E+01 1.60E+00 4.60E+01 5.40E+0O TM 9 L9880-01 TM 9 L9880-01 9/14/2005 Cs-137 8.OOE-01 1.50E+00 5.20E+OO TM 9 L9880-01 9/14/2005 Fe-59 3.60E+00 5.30E+00 1.80E+01 L TM 9 L9880-01 9/14/2005 1-131 -7.IOE+00 3.90E+00 1.40E+01 TM 9 L9880-01 9/14/2005 1-131 2.OOE-02 7.1OE-02 3.90E-01 TM 9 L9880-01 9/14/2005 K40 1.24E+03 5.80E+01 9.OOE+01 L TM 9 L9880-01 9/14/2005 La-140 -2.70E+00

-2.40E+00 3.10E+00 1.50E+00 1.20E+01 5.60E+OO TM 9 L9880-01 9/14/2005 Mn-54 TM 9 L9880-01 9/14/2005 Nb-95 2.OOE-01 1.90E+00 6.50E+Otl L TM TM 9

9 L9880-01 L9880-01 9/14/2005 9/14/2005 Ru-103 Ru-106

-6.OOE-01 4.OOE+00 1.50E+00 1.40E+01 5.40E+OO 4.80E+01 4.40E+00 3.90E+00 1.30E+01 U TM TM TM 9

9 9

L9880-01 L9880-01 L9880-01 9/14/2005 9/14/2005 9/14/2005 Sb-124 Sb-125 Se-75 1.10E+00

-1.60E+00 3.50E+00 1.40E+00 1.20E+01 5.00E+00 TM 9 L9880-01 9/14/2005 Zn-65 4.80E+00 3.60E+00 1.20E+01 TM 9 L9880-01 9/14/2005 Zr-95 9.OOE-01 2.80E+00 9.90E+OO L TM 9 L9963-01 9/28/2005 AcTh-228 Ag-108m

-7.70E+00

-8.OOE-01 6.80E+00 1.30E+00 2.50E+01, 4.70E+00 TM 9 L9963-01 9/28/2005 TM 9 L9963-01 9/28/2005 Ag-11 Om 4.20E+00 2.30E+00 7.60E+0O TM 9 L9963-01 9/28/2005 Ba-140 5.OOE+00 2.80E+00 9.1OE+0()

TM 9 L9963-01 9/28/2005 Be-7 2.20E+01 1.30E+01 4.30E+OI TM 9 L9963-01 9/28/2005 Ce-141 3.OOE+00 2.20E+00 7.40E+0)

TM 9 L9963-01 9/28/2005 Ce-144 -1.31 E+01 7.80E+00 2.80E+OI TM 9 L9963-01 9/28/2005 Co-57 4.OOE-01 1.OOE+00 3.40E+0)

TM 9 L9963-01 9/28/2005 Co-58 5.OOE-01 1.60E+00 5.60E+0O TM 9 L9963-01 9/28/2005 Co-60 -2.20E+00 2.30E+00 8.40E+0) 64 TM 9 L9963-01 9/28/2005 Cr-51 -6.OOE+00 1.60E+01 5.40E+OI TM 9 L9963-01 9/28/2005 Cs-134 3.OOE+00 1.70E+00 5.60E+0I TM 9 L9963-01 9/28/2005 Cs-137 3.20E+00 1.80E+00 6.OOE+0O TM 9 L9963-01 9/28/2005 Fe-59 -3.50E+00 3.90E+00 1.50E+OI

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-178-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC I

TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 9 L9963-01 9/28/2005 1-131 -9.90E-02 1.70E-02 6.1OE-01 TM 9 L9963-01 9/28/2005 1-131 3.OOE-01 3.60E+00 1.30E+01 TM 9 L9963-01 9/28/2005 K-40 1.26E+03 6.IOE+01 8.80E+01 TM 9 L9963-01 9/28/2005 La-140 5.80E+00 3.30E+00 1.OOE+01 TM 9 L9963-01 9/28/2005 Mn-54 -1.70E+00 1.70E+00 6.20E+00 TM 9 L9963-01 9/28/2005 Nb-95 -6.OOE-01 1.80E+00 6.70E+00 TM 9 L9963-01 9/28/2005 Ru-103 -2.1OE+00 1.60E+00 6.1 OE+00 TM 9 L9963-01 9/28/2005 Ru-106 -2.60E+01 1.50E+01 5.50E+01 TM 9 L9963-01 9/28/2005 Sb-1 24 -7.OOE-01 3.60E+00 1.40E+01 TM 9 L9963-01 9/28/2005 Sb-125 -6.40E+00 4.IOE+00 1.50E+01 TM 9 L9963-01 9/28/2005 Se-75 6.OOE-01 1.80E+00 6.20E+00 TM 9 L9963-01 9/28/2005 Zn-65 -4.OOE-01 4.1OE+00 1.50E+01 TM 9 L9963-01 9/28/2005 Zr-95 1.OOE-01 3.1 OE+OO 1.IOE+01 TM L10021-0110/12/2005 AcTh-228 1.17E+01 8.20E+00 2.70E+01 TM L10021-0110/12/2005 Ag-1 08m O.OOE+O0 1.70E+00 5.90E+00 TM LI 0021-0110/12/2005 Ag-110m -1.60E+00 2.70E+00 1.OOE+01 TM LI 0021-0110/12/2005 Ba-140 4.20E+00 3.1OE+00 1.OOE+01 TM LI 0021-0110/12/2005 Be-7 -1.OOE+00 1.70E+01 6.30E+01 TM LI 0021-0110/12/2005 Ce-141 -4.40E+00 3.40E+00 1.20E+01 TM L10021-0110/12/2005 Ce-144 -1.OOE+00 1.1OE+01 3.80E+01 TM L10021-0110/12/2005 Co-57 -1.20E+00 1.40E+00 5.20E+0O TM LI 0021-0110/12/2005 Co-58 6.OOE-01 2.40E+00 8.50E+00 TM LI 0021-0110/12/2005 Co-60 3.1 OE+00 2.80E+00 9.40E+00 TM TM LI 0021-0110112/2005 L10021-0110112/2005 Cr-51 Cs-134

-2.OOE+00 6.OOE-01 1.80E+01 2.30E+00 6.60E+01 8.20E+00 LI TM L10021-0110112/2005 Cs-I 37 1.1OE+00 2.20E+00 7.80E+00 TM LI 0021-0110/12/2005 Fe-59 I.OOE-01 4.90E+00 1.80E+01 LI 0021-0110/12/2005 1-131 -6.60E-02 1.20E-02 4.40E-01 TM TM TM L10021-0110/12/2005 L10021-0110/1212005 1-131 K-40

-2.90E+00 1.30E+03 3.70E+00 7.50E+01 1.40E+01 I.OOE+02

Li TM L10021-0110/1212005 La-140 4.80E+00 3.60E+00 1.20E+01 TM TM L10021-0110/1212005 L10021-0110/12/2005 Mn-54 Nb-95 Ru-I 03

-3.OOE-01 3.OOE-01 1.40E+00 2.IOE+00 2.50E+00 2.40E+00 7.70E+00 8.80E+00 8.30E+00 U

TM LI 0021-0110/12/2005 TM L10021-011011212005 Ru-106 -3.OOE+00 2.OOE+01 7.30E+01 TM LI 0021-0110/12/2005 Sb-1 24 2.OOE+00 5.1OE+00 1.90E+01 TM L10021-0110/12/2005 Sb-1 25 6.OOE-01 5.40E+00 1.90E+01 TM LI 0021-0110/12/2005 Se-75 -4.40E+00 2.60E+00 9.50E+00 TM LI 0021-0110/12/2005 Zn-65 -2.50E+00 5.50E+00 2.OOE+01 TM LI 0021-0110/12/2005 Zr-95 -4.40E+00 3.90E+00 1.50E+01 TM L10167-01 11/9/2005 AcTh-228 5.50E+00 3.80E+00 1.30E+01 I

TM L10167-01 111912005 Ag-108m -9.70E-01 7.20E-01 2.50E+00 I4 TM L10167-01 11/9/2005 Ag-11Om 6.OOE-01 1.30E+00 4.60E+00 TM L10167-01 11/9/2005 Ba-140 -1.30E+00 2.1OE+00 7.70E+00 TM L10167-01 11/9/2005 Be-7 1.20E+00 7.90E+00 2.70E+01 TM L10167-01 11/9/2005 Ce-141 -1.90E+00 1.50E+00 5.20E+00 TM L10167-01 11/9/2005 Ce-144 8.30E+00 5.60E+00 1.80E+01 TM L10167-01 11/9/2005 Co-57 -1.90E-01 4.80E-01 1.60E+00 TM L10167-01 11/9/2005 Co-58 I.OOE-01 1.OOE+O0 3.60E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-179-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 CONC STD.DEV. MDC SAMPLE END L TYPE STATION LSN DATE L10167-0 1 11/9/2005 NUCLIDE Co-60 (pCi/L) 1.70E+00 (pCi/L) 1.30E+00 (pCiL) 4.20E+0O TM 9 TM 9 L10167-0 111/9/2005 Cr-51 -6.OOE+00 7.70E+00 2.70E+O'I TM 9 L10167-0 1111/9/2005 Cs-134 1.80E+00 1.OOE+OO 3.40E+0)

TM 9 L10167-0 1 11/9/2005 Cs-137 1.1 6E+OO 9.80E-01 3.30E+0)

TM 9 L10167-0 1 11/9/2005 Fe-59 -1.OOE+OO 2.60E+00 9.10E+0O L~ TM TM 9

9 L10167-0 1 11/9/2005 L10167-0 1 11/9/2005 1-131 1-131

-1.OOE-02

-1.70E+00 1.20E-01 2.10E+00 7.1OE-0I 7.20E+0)

TM 9 L10167-0 1 11/9/2005 K-40 1.34E+03 3.80E+01 5.50E+OI TM 9 L10167-0 1 11/9/2005 La-140 -1.50E+00 2.50E+00 8.90E+0O TM 9 L10167-0 1 11/9/2005 Mn-54 I.OOE+OO 1.OOE+00 3.50E+0O TM 9 L10167-0'1 11/9/2005 Nb-95 -1.30E+00 1.20E+00 4.40E+0)

TM 9 L10167-0' 1 11/9/2005 Ru-103 -2.20E+00 I.OOE+OO 3.70E+0)

TM 9 LI 0167-0' 1 11/9/2005 Ru-106 -5.OOE-01 7.90E+00 2.70E+O I TM 9 L10167-0' 1 11/9/2005 Sb-124 1.60E+00 2.50E+00 8.70E+0) 9 L10167-011 11/9/2005 Sb-125 2.40E+00 2.30E+00 7.50E+01)

L TM TM TM 9

9 L1I0167-0' 1 11/9/2005 L10167-0' 1 11/9/2005 Se-75 Zn-65

-1.51 E+00

-2.90E+00 9.50E-01 2.50E+00 3.30E+010 8.80E+00)

TM 9 L10167-0' 1 11/9/2005 Zr-95 1.OOE-01 1.80E+00 6.30E+0O TM 9 LI0268-011 12/7/2005 AcTh-228 3.90E+00 7.70E+00 2.60E+01 TM 9 L10268-01 1 12/7/2005 Ag-108m 1.1OE+00 1.40E+00 4.80E+0O TM 9 LI 0268-011 1217/2005 Ag-1IOm -5.70E+00 2.50E+00 9.90E+0O TM 9 L10268-011 1217/2005 Ba-140 1.1OE+00 3.30E+00 1.20E+01 TM 9 L10268-011 12/7/2005 Be-7 9.OOE+OO 1.50E+01 5.OOE+01 TM 9 L10268-011 12/7/2005 Ce-141 -4.50E+00 2.60E+00 9.10E+0O LI 0268-0111217/2005 Ce-144 -1.20E+00 8.80E+00 3.OOE+01 L TM TM TM 9

9 9

L10268-01 12/7/2005 LI 0268-01 12/7/2005 Co-57 Co-58 1.OOE-01

-3.40E+00 1.1OE+00 1.70E+00 3.70E+0O 6.70E+OD TM 9 L10268-01 12/7/2005 Co-60 -3.OOE-01 2.30E+00 8.30E+00 TM 9 L10268-01 12/7/2005 Cr-51 -3.OOE+00 1.70E+01 5.90E+01 TM 9 Li 0268-01 12/7/2005 Cs-134 -2.0OE-01 1.80E+00 6.40E+0O TM 9 L10268-01 12/7/2005 Cs-137 -2.30E+00 2.OOE+00 7.40E+0O TM 9 L10268-01 12/7/2005 Fe-59 2.80E+00 4.40E+00 1.50E+01 TM 9 LI 0268-01 12/7/2005 1-131 2.20E-01 2.OOE-01 7.1 OE-O1 TM 9 L10268-01 12/7/2005 1-131 4.90E+00 4.20E+00 1.40E+01 TM 9 LI 0268-01 12/7/2005 K-40 1.32E+03 6.40E+01 9.40E+01 TM 9 LI 0268-01 12/7/2005 La-1 40 1.30E+00 3.80E+00 1.40E+01 TM 9 LI 0268-01 12/7/2005 Mn-54 9.OOE-01 1.80E+00 6.IOE+00 TM 9 LI 0268-01 12/7/2005 Nb-95 -1.80E+00 2.OOE+00 7.40E+00 TM 9 LI 0268-01 12/7/2005 Ru-103 2.OOE-01 1.80E+00 6.40E+00 TM 9 LI 0268-01 12/7/2005 Ru-106 -2.30E+01 1.60E+01 5.90E+01 TM 9 L10268-01 12/7/2005 Sb-124 7.40E+00 4.30E+00 1.40E+01 TM 9 L10268-01 12/7/2005 Sb-125 1.70E+00 4.20E+00 1.50E+01 TM 9 L10268-01 12/7/2005 Se-75 -1.20E+00 2.OOE+00 7.20E+O0 TM 9 L10268-01 12/7/2005 Zn-65 -9.OOE-01 4.40E+00 1.60E+01 TM 9 L10268-01 12/7/2005 Zr-95 -4.OOE-01 2.90E+00 1.OOE+01 TM 15 L8729-02 1/19/2005 AcTh-228 4.70E+00 7.IOE+00 2.60E+01 TM 15 L8729-02 1/19/2005 Ag-108m 7.OOE-01 1.80E+00 6.50E+00 TM 15 L8729-02 1/19/2005 Ag-11Om 1.60E+00 2.60E+00 9.50E+00 TM 15 L8729-02 1/19/2005 Ba-140 -5.30E+00 3.1 OE+00 1.50E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-180-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 L-i SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 15 L8729-02 1/19/2005 Be-7 1.OOE+01 1.60E+01 5.80E+01 TM 15 L8729-02 1/19/2005 Ce-141 1.60E+00 3.10E+00 1.1OE+01 TM 15 L8729-02 1/19/2005 Ce-144 4.OOE+00 1.1OE+01 3.90E+01 TM 15 L8729-02 1/19/2005 Co-57 -1.40E+00 1.40E+00 5.20E+00 TM 15 L8729-02 1/19/2005 Co-58 1.10E+00 2.OOE+00 7.30E+00 TM TM 15 15 L8729-02 L8729-02 1/19/2005 Co-60 1/19/2005 Cr-51 1.10E+00 2.OOE+00 2.70E+00 1.90E+01 1.OOE+01 6.70E+01 Li TM 15 L8729-02 1/19/2005 Cs-1 34 -3.50E+00 2.OOE+00 8.90E+00 TM 15 L8729-02 1/19/2005 Cs-1 37 2.30E+00 2.OOE+00 6.90E+00 TM 15 L8729-02 1/19/2005 Fe-59 7.10E+00 6.50E+00 2.20E+01 TM 15 L8729-02 1/19/2005 1-131 -2.80E+00 3.30E+00 1.30E+01 TM 15 L8729-02 1/19/2005 1-131 1.80E-01 1.70E-01 6.OOE-01 TM 15 L8729-02 1/19/2005 K-40 1.36E+03 9.10E+01 1.10E+02 TM 15 L8729-02 1/19/2005 La-140 -6.10E+00 3.50E+00 1.70E+01 TM 15 L8729-02 1/19/2005 Mn-54 O.OOE+00 1.90E+00 7.40E+00 LJ1 TM 15 L8729-02 1/19/2005 Nb-95 -1.30E+00 1.90E+00 7.70E+00 TM 15 L8729-02 1/19/2005 Ru-103 6.OOE-01 2.OOE+00 7.20E+00 TM 15 L8729-02 1/19/2005 Ru-106 2.40E+01 1.50E+01 5.OOE+01 TM 15 L8729-02 1/19/2005 Sb-1124 O.OOE+00 3.OOE+00 1.40E+01 TM 15 L8729-02 1/19/2005 Sb-125 -7.OOE-01 4.10E+00 1.60E+01 TM 15 L8729-02 1/19/2005 Se-75 -6.OOE-01 2.20E+00 7.90E+00 TM 15 L8729-02 1/19/2005 Zn-65 -3.80E+00 4.80E+00 2.OOE+01 LI TM 15 L8729-02 1/19/2005 Zr-95 7.30E+00 3.1OE+00 8.80E+00 TM 15 L8865-02 2/16/2005 AcTh-228 -4.OOE-01 5.50E+00 2.OOE+01 TM 15 L8865-02 2/16/2005 Ag-108m -8.OOE-01 1.20E+00 4.60E+00 TM 15 L8865-02 2/1612005 Ag-11m -4.OOE-01 2.20E+00 8.30E+00 Li TM 15 L8865-02 2/16/2005 Ba-140 -7.OOE-01 2.90E+00 1.20E+01 TM 15 L8865-02 2/16/2005 Be-7 -3.OOE+00 1.20E+01 4.40E+01 TM TM 15 15 L8865-02 L8865-02 2/16/2005 Ce-141 2/16/2005 Ce-144

-2.OOE+00

-9.70E+00 2.70E+00 7.70E+00 9.40E+00 2.80E+01 Li TM 15 L8865-02 2/16/2005 Co-57 -3.00E-01 9.50E-01 3.30E+00 TM 15 L8865-02 2/16/2005 Co-58 -8.OOE-01 1.90E+00 7.OOE+00 TM 15 L8865-02 2/16/2005 Co-60 2.70E+00 1.80E+00 5.90E+00 TM 15 L8865-02 2/16/2005 Cr-51 1.40E+01 1.40E+01 4.60E+01 TM 15 L8865-02 2/16/2005 Cs-134 3.OOE-01 1.60E+00 5.90E+00 TM 15 L8865-02 2/16/2005 Cs-1 37 -2.50E+00 1.60E+00 6.30E+00 TM 15 L8865-02 2/1612005 Fe-59 -7.30E+00 6.50E+00 2.50E+01 15 L8865-02 2/16/2005 1-131 2.70E-01 1.80E-01 5.40E-01 TM TM TM 15 15 L8865-02 L8865-02 2/16/2005 1-131 2/1612005 K-40

-2.90E+00 1.23E+03 4.OOE+00 6.60E+01 1.50E+01 7.90E+01

U TM 15 L8865-02 2/16/2005 La-140 -8.00E-01 3.30E+00 1.30E+01 TM TM 15 15 L8865-02 L8865-02 2/16/2005 Mn-54 2/16/2005 NI-95

-2.OOE-01

-6.OOE-01 1.70E+00 2.1OE+00 6.10E+00 7.70E+00 5.90E+00 U

TM 15 L8865-02 2/16/2005 Ru-103 2.OOE-01 1.60E+00 TM 15 L8865-02 2/1612005 Ru-106 O.OOE+00 1.30E+01 4.60E+01 TM 15 L8865-02 2/16/2005 Sb-I124 -2.70E+00 3.50E+00 1.50E+01 TM 15 L8865-02 2/16/2005 Sb-125 -2.60E+00 4.1OE+00 1.50E+01 TM 15 L8865-02 2/16/2005 Se-75 1.20E+00 1.70E+00 5.70E+00 TM 15 L8865-02 2/16/2005 Zn-65 -4.40E+00 3.70E+00 1.50E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-181-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 CONC STD.DEV. MDC END L SAMPLE TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 15 L8865-02 2/16/2005 Zr-95 6.70E+00 2.70E+00 8.30E+OCO TM 15 L8980-02 3/16/2005 AcTh-228 4.1OE+00 6.90E+00 2.40E+01 J TM 15 L8980-02 3/16/2005 3/16/2005 Ag-108m Ag-1I Om

-5.OOE-01

-1.50E+00 1.40E+00 2.50E+00 5.OOE+O0 9.60E+OO TM 15 L8980-02 L8980-02 3/16/2005 Ba-140 4.10E+00 2.60E+00 8.30E+OC U TM TM TM 15 15 15 L8980-02 L8980-02 3/16/2005 3/16/2005 Be-7 Ce-141 8.OOE+00 1.40E+00 1.20E+01 2.40E+00 4.10E+01 8.OOE+OCO TM 15 L8980-02 3/16/2005 Ce-144 -5.90E+00 8.80E+00 3.10E+01 L TM 15 L8980-02 L8980-02 3/16/2005 3/16/2005 Co-57 Co-58 1.1OE+00 9.OOE-01 1.20E+00 1.60E+00 4.OOE+OO 5.80E+0O TM 15 Co-60 -2.30E+00 2.20E+00 8.8OE+O0 L TM TM TM 15 15 15 L8980-02 L8980-02 3/16/2005 L8980-02 3/16/2005 Cr-51 3/16/2005 Cs-134 3.OOE+00

-1.OOE-01 1.50E+01 1.70E+00 5.30E+Oi 6.30E+0(I TM 15 L8980-02 3/16/2005 Cs-137 -9.OOE-01 1.40E+00 5.60E+0O L8980-02 3/1612005 Fe-59 -1.OOE-01 5.90E+00 2.20E+OI L TM TM TM 15 15 15 L8980-02 L8980-02 3/16/2005 3/16/2005 1-131 1-131 5.OOE-02 1.20E+00 1.10E-01 2.80E+00 5.50E-01 9.90E+00 TM 15 L8980-02 3/16/2005 K-40 1.38E+03 7.50E+01 9.30E+OI L TM TM 15 15 L8980-02 L8980-02 3/16/2005 3/16/2005 La-140 Mn-54 4.80E+00 7.00E-01 3.OOE+00 1.60E+00 9.60E+0()

5.70E+00 TM 15 L8980-02 3/16/2005 Nb-95 -4.OOE-01 1.70E+00 6.30E+0O)

L TM TM 15 15 L8980-02 L8980-02 3/16/2005 3/16/2005 Ru-103 Ru-106

-2.90E+00

-1.30E+01 1.80E+00 1.80E+01 7.1OE+O0 6.60E+OI TM 15 L8980-02 3/16/2005 Sb-124 1.OOE+00 4.OOE+00 1.60E+OI TM 15 L8980-02 3/16/2005 Sb-125 -2.OOE+00 3.80E+00 1.40E+OI L TM 15 L8980-02 3/16/2005 Se-75 6.OOE-01 1.70E+00 4.1OE+00 6.OOE+0O 1.60E+OI TM 15 L8980-02 3/16/2005 Zn-65 -3.1OE+00 TM 15 L8980-02 3/16/2005 Zr-95 7.OE-01 2.80E+00 1.OOE+OI L TM TM 15 15 L9123-02 L9123-02 4/13/2005 4/13/2005 AcTh-228 Ag-108m

-3.OOE+00 2.OOE-01 6.80E+00 1.40E+00 2.60E+O I 4.90E+0) 4/13/2005 Ag-110m -2.20E+00 2.50E+00 9.80E+0)

L TM TM TM 15 15 15 L9123-02 L9123-02 L9123-02 4/13/2005 4/13/2005 Ba-140 Be-7 6.OOE-01

-2.OOE+00 2.20E+00 1.20E+01 8.40E+0) 4.50E+OI TM 15 L9123-02 4/13/2005 Ce-141 -1.30E+00 2.30E+00 8.20E+0O TM 15 L9123-02 4/13/2005 Ce-144 -6.40E+00 8.OOE+00 2.90E+0 I L TM TM 15 15 L9123-02 L9123-02 4/13/2005 4/13/2005 Co-57 Co-58

-5.60E-01

-1.40E+00 9.60E-01 1.BOE+00 3.50E+0) 6.90E+0O TM 15 L9123-02 4/13/2005 Co-60 -1.1OE+00 2.1OE+00 8.20E+0O TM 15 L9123-02 4/13/2005 Cr-51 4.OOE+00 1.40E+01 4.80E+01 TM 15 L9123-02 4/13/2005 Cs-134 1.30E+00 2.1OE+00 7.50E+03 TM 15 L9123-02 4/13/2005 Cs-137 2.OOE-01 1.60E+00 5.80E+O0 U TM TM 15 15 L9123-02 L9123-02 4/13/2005 4/13/2005 Fe-59 1-131 2.40E+00 5.80E+00 6.50E+00 2.70E+00 2.30E+01 8.70E+00 TM 15 L9123-02 4/13/2005 1-131 2.90E-02 6.80E-02 3.50E-01 TM 15 L9123-02 4/13/2005 K-40 1.59E+03 8.20E+01 1.OOE+02 TM 15 L9123-02 4/13/2005 La-140 7.OOE-01 2.50E+00 9.70E+00 TM 15 L9123-02 4/13/2005 Mn-54 1.40E+00 1.60E+00 5.60E+00 TM 15 L9123-02 4/13/2005 Nb-95 -2.30E+00 1.80E+00 7.10E+00 TM 15 L9123-02 4/13/2005 Ru-103 -3.OOE+00 1.50E+00 6.10E+0O Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-182-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pci/L)

TM 15 L9123-02 4/1312005 Ru-106 -2.0OE+01 1.20E+01 5.1OE+01 TM 15 L9123-02 4/13/2005 Sb-124 -4.OOE+OO 3.70E+00 1.70E+01 TM 15 L9123-02 4/13/2005 Sb-125 -5.50E+00 3.90E+00 1.50E+01 TM 15 L9123-02 4/13/2005 Se-75 1.OOE-01 1.90E+00 6.80E+00 TM 15 L9123-02 4/13/2005 Zn-65 -5.70E+00 4.20E+00 1.70E+01 TM 15 L9123-02 4/13/2005 Zr-95 1.40E+00 3.1 OE+00 1.1OE+01 TM 15 L9209-02 4/27/2005 AcTh-228 -2.1 OE+00 5.90E+00 2.30E+01 TM 15 L9209-02 4/27/2005 Ag-108m 1.20E+00 1.20E+00 4.10E+00 TM 15 L9209-02 4/27/2005 Ag-11Om 2.50E+00 2.20E+00 7.70E+00 TM 15 L9209-02 4/27/2005 Ba-140 1.60E+00 2.OOE+00 7.50E+00 TM 15 L9209-02 4/27/2005 Be-7 2.00E+01 1.30E+01 4.40E+01 TM 15 L9209-02 4/27/2005 Ce-141 4.OOE-01 2.50E+00 8.80E+00 TM 15 L9209-02 4/27/2005 Ce-144 3.20E+00 9.50E+00 3.30E+01 TM 15 L9209-02 4/27/2005 Co-57 -6.OOE-01 1.30E+00 4.60E+00 TM 15 L9209-02 4/27/2005 Co-58 -1.50E+00 1.90E+00 7.30E+00 Ii TM 15 L9209-02 4/27/2005 Co-60 -1.OOE+OO 2.1OE+00 8.20E+00 TM 15 L9209-02 4/27/2005 Cr-51 -1.20E+01 1.40E+01 5.20E+01 TM 15 L9209-02 4/27/2005 Cs-1 34 -1.50E+00 1.90E+00 7.40E+00 TM 15 L9209-02 4/27/2005 Cs-1 37 -3.OOE-01 1.90E+00 6.90E+00 TM 15 L9209-02 4/27/2005 Fe-59 O.OOE+00 5.80E+00 2.20E+01 TM 15 L9209-02 4/27/2005 1-131 5.OOE-01 2.60E+00 9.40E+00 TM TM 15 15 L9209-02 L9209-02 L9209-02 4/27/2005 4/27/2005 4/27/2005 1-131 K-40 La-140 8.OOE-02 IA7E+03 1.80E+00 1.70E-01 8.1OE+01 2.30E+00 6.50E-01 9.60E+01 8.60E+00 L

TM 15 TM TM TM 15 15 15 L9209-02 L9209-02 L9209-02 4/27/2005 4/27/2005 4/27/2005 Mn-54 Nb-95 Ru-103

-3.60E+00 O.OOE+00

-5.OOE-01 1.90E+00 2.30E+00 1.60E+00 7.80E+00 8.20E+OO 6.1OE+00 L

TM 15 L9209-02 4/27/2005 Ru-106 -2.40E+01 1.40E+01 5.70E+01 TM 15 L9209-02 4/27/2005 Sb-124 -1.1OE+OO 3.60E+00 1.50E+01 TM 15 L9209-02 4/27/2005 Sb-125 -4.20E+00 3.90E+00 1.50E+01 TM 15 L9209-02 4/27/2005 Se-75 -2.OOE-01 1.70E+00 6.20E+00 TM TM 15 15 L9209-02 L9209-02 4/27/2005 4/27/2005 5/11/2005 Zn-65 Zr-95 AcTh-228

-4.20E+00 3.OOE+OO

-3.8OE+OO 4.60E+00 2.90E+00 6.80E+00 1.80E+01 9.80E+00 2.60E+01 L

TM 15 L9263-02 TM TM TM 15 15 15 L9263-02 L9263-02 L9263-02 5/11/2005 5/11/2005 5/11/2005 Ag-108m Ag-110m Ba-140 1.90E+00 1.70E+00 1.1OE+00 1.60E+00 2.80E+00 2.30E+00 5.30E+00 9.60E+00 8.70E+OO L

L9263-02 5/11/2005 Be-7 O.OOE+00 1.60E+01 5.60E+01 TM TM TM 15 15 15 L9263-02 L9263-02 5/11/2005 5/11/2005 Ce-141 Ce-144

-5.OOE+OO

-8.00E+OO 2.60E+00 9.30E+00 9.40E+00 3.30E+01 L

TM 15 L9263-02 5/11/2005 Co-57 -1.OOE-01 1.20E+00 4.20E+00 TM 15 L9263-02 5/11/2005 Co-58 O.OOE+OO 1.70E+00 6.30E+00 Li.I7 TM 15 L9263-02 5/11/2005 Co-60 2.70E+00 2.20E+00 7.20E+00 TM 15 L9263-02 5/11/2005 Cr-51 2.50E+01 1.60E+01 5.30E+01 TM 15 L9263-02 5/11/2005 Cs-134 1.40E+00 2.OOE+O0 7.00E+OO TM 15 L9263-02 5/11/2005 Cs-137 1.90E+00 2.OOE+00 6.90E+00 TM 15 L9263-02 5/11/2005 Fe-59 1.20E+00 6.1OE+00 2.20E+01 TM 15 L9263-02 5/11/2005 1-131 -1.70E+00 3.1OE+00 1.1 OE+01 TM 15 L9263-02 5/11/2005 1-131 -9.1OE-02 1.60E-02 5.80E-01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-183-

L Seabrook Station Radiological Environmental MonitoringfProgram Data - 2005 L SAMPLE TYP- STATION LSN END DATE NUCLIDE CONC (pCi/L)

STD.DEV.

(pCi/L)

MDC (pCi/L)

TM 15 L9263-02 5/11/2005 K-40 1.55E+03 7.70E+01 9.60E+0' TM 15 L9263-02 5/11/2005 La-140 1.30E+00 2.70E+00 1.OOE+OI TM 15 L9263-02 5/11/2005 Mn-54 -2.00E-01 2.1OE+00 7.40E+0()

TM 15 L9263-02 5/11/2005 Nb-95 -8.OOE-01 2.10E+00 7.80E+00 L9263-02 5/11/2005 Ru-103 -6.00E-01 1.80E+00 6.60E+0()

L TM TM TM 15 15 15 L9263-02 L9263-02 5/11/2005 5/11/2005 Ru-106 Sb-124 3.00E+00

-5.50E+00 1.60E+01 4.30E+00 5.80E+OI 1.80E+OI 15 L9263-02 5/11/2005 Sb-125 9.OOE-01 4.50E+00 1.60E+OI L TM TM TM 15 15 L9263-02 L9263-02 5/11/2005 5/11/2005 Se-75 Zn-65 1.10E+00 O.OOE+OO 2.30E+00 4.40E+00 7.90E+0O 1.60E+OI L9263-02 5/11/2005 Zr-95 1.30E+00 3.50E+00 1.20E+Ol h TM TM TM 15 15 15 L9309-02 L9309-02 5/25/2005 5/25/2005 AcTh-228 Ag-108m

-1.45E+01

-1.20E+00 7.40E+00 1.50E+00 3.OOE+Ol 5.50E+0)

TM 15 L9309-02 5/25/2005 Ag-110m -2.50E+00 2.90E+00 1.10E+Ol TM 15 L9309-02 5/25/2005 Ba-140 -3.20E+00 3.60E+00 1.40E+O I L TM 15 L9309-02 5/25/2005 Be-7 2.70E+01

-2.40E+00 1.50E+01 2.40E+00 4.70E+OI 8.60E+0O TM 15 L9309-02 5/25/2005 Ce-141 TM 15 L9309-02 5/25/2005 Ce-144 -7.50E+00 9.20E+00 3.30E+OI L TM TM 15 15 L9309-02 L9309-02 5/25/2005 5/25/2005 Co-57 Co-58 2.OOE-01 1.50E+00 1.20E+00 1.90E+00 4.00E+0I) 6.80E+0O TM 15 L9309-02 5/25/2005 Co-60 4.OOE-01 2.20E+00 8.20E+0')

l TM 15 L9309-02 5/25/2005 Cr-51 -4.00E+00 1.70E+01 5.90E+01 TM 15 L9309-02 5/25/2005 Cs-1 34 4.1 OE+00 2.OOE+00 6.50E+0O TM 15 L9309-02 5/25/2005 Cs-137 -3.OOE-01 2.20E+00 8.00E+01)

TM 15 L9309-02 5/25/2005 Fe-59 1.81E+01 7.20E+00 2.20E+01 TM 15 L9309-02 5/25/2005 1-131 -3.70E+00 3.70E+00 1.40E+01 TM 15 L9309-02 5/25/2005 1-131 1.20E-01 1.50E-01 6.10E-01 TM 15 L9309-02 5/25/2005 K-40 1.58E+03 8.20E+01 1.10E+02 b TM 15 L9309-02 5/25/2005 La-140 Mn-54

-3.70E+00 8.OOE-01 4.1OE+00 1.90E+00 1.70E+01 6.70E+0)

TM 15 L9309-02 5/25/2005 8.30E+03 U TM TM TM 15 15 15 L9309-02 5/25/2005 Nb-95 L9309-02 5/25/2005 Ru-103 L9309-02 5/25/2005 Ru-106

-2.70E+00

-2.60E+00 O.OOE+OO 2.1OE+00 2.IOE+00 1.70E+01 7.90E+03 6.OOE+01 TM 15 L9309-02 5/25/2005 Sb-124 O.OOE+00 3.90E+00 1.50E+01 TM 15 L9309-02 5/25/2005 Sb-125 O.OOE+00 4.20E+00 1.50E+01 TM 15 L9309-02 5/25/2005 Se-75 -2.90E+00 1.80E+00 6.70E+OO TM 15 L9309-02 5/25/2005 Zn-65 3.20E+00 4.80E+00 1.70E+01 TM 15 L9309-02 5/25/2005 Zr-95 2.20E+00 3.30E+00 1.20E+01 TM 15 L9400-02 6/8/2005 AcTh-228 3.40E+00 6.50E+00 2.40E+01 TM 15 L9400-02 6/8/2005 Ag-108m -1.OOE-01 1.90E+00 6.80E+O0 TM 15 L9400-02 6/8/2005 Ag-1I1m -1.80E+00 2.80E+00 1.10E+01 d TM 15 L9400-02 6/8/2005 Ba-140 2.20E+00 3.30E+00 1.20E+01 TM 15 L9400-02 6/8/2005 Be-7 8.OOE+00 1.90E+01 6.80E+01 TM 15 L9400-02 6/8/2005 Ce-141 -6.10E+00 3.40E+00 1.30E+01 TIU 15 L9400-02 6/8/2005 Ce-144 5.0OE+00 1.20E+01 4.20E+01 TV 15 L9400-02 6/8/2005 Co-57 5.OOE-01 1.60E+00 5.60E+O0 TV 15 L9400-02 6/8/2005 Co-58 -3.10E+00 2.60E+00 1.OOE+01 TiV 15 L9400-02 6/8/2005 Co-60 -9.OOE-01 2.60E+00 1.00E+01 TM. 15 L9400-02 6/8/2005 Cr-51 1.50E+01 2.30E+01 8.OOE+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-184-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 Li SAMPLE END CONC STD.DEV. MDC I I TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

I TM 15 L9400-02 6/8/2005 Cs-1 34 -7.OOE-01 2.30E+00 8.80E+00 TM 15 L9400-02 6/8/2005 Cs-1 37 -1.80E+00 2.60E+00 9.70E+00 TM 15 L9400-02 6/8/2005 Fe-59 -1.09E+01 7.1OE+00 3.OOE+01 TM 15 L9400-02 6/8/2005 1-131 O.OOE+00 1.OOE-01 5.90E-01 TM 15 L9400-02 6/8/2005 1-131 -5.OOE+OO 5.IOE+00 1.90E+01 TM 15 L9400-02 6/8/2005 K-40 1.50E+03 8.70E+01 1.1OE+02 TM 15 L9400-02 6/8/2005 La-140 2.60E+00 3.80E+00 1.40E+01 TM 15 L9400-02 6/8/2005 Mn-54 -3.OOE-01 2.1OE+OO 8.OOE+00 . I TM 15 L9400-02 6/8/2005 Nb-95 3.OOE+OO 2.80E+00 9.60E+00 TM 15 L9400-02 6/8/2005 Ru-1 03 -2.20E+00 2.30E+00 8.70E+00 TM 15 L9400-02 6/8/2005 Ru-106 5.OOE+00 1.80E+01 6.50E+01 TM 15 L9400-02 6/8/2005 Sb-124 5.OOE-01 4.70E+00 1.90E+01 TM 15 L9400-02 6/8/2005 Sb-1 25 -8.20E+00 6.1OE+OO 2.30E+01 TM 15 L9400-02 6/8/2005 Se-75 2.40E+00 2.50E+00 8.30E+00 TM 15 L9400-02 6/8/2005 Zn-65 -1.26E+01 6.1 OE+00 2.50E+01 11 TM 15 L9400-02 6/8/2005 Zr-95 O.OOE+00 3.80E+00 1.40E+01 TM 15 L9474-02 6/22/2005 AcTh-228 1.03E+01 6.70E+00 2.20E+01 TM 15 L9474-02 6/22/2005 Ag-108m 1.02E+00 9.OOE-01 3.OOE+00 TM 15 L9474-02 6/22/2005 Ag-11Om 1.OOE-01 1.60E+00 5.50E+00 TM 15 L9474-02 6/22/2005 Ba-140 -6.OOE-01 2.50E+00 9.1OE+OO TM 15 L9474-02 6/22/2005 Be-7 -9.60E+00 9.40E+00 3.40E+01 TM TM TM 15 15 15 L9474-02 L9474-02 L9474-02 6/22/2005 6/22/2005 6/22/2005 Ce-141 Ce-144 Co-57 1.40E+00 8.50E+00

-7.1OE-01 1.70E+00 5.30E+00 5.80E-01 5.70E+00 1.70E+01 2.OOE+00 L

TM TM TM 15 15 15 L9474-02 L9474-02 L9474-02 6/22/2005 6/22/2005 6/22/2005 Co-58 Co-60 Cr-51 2.30E+00 4.00E-01

-7.50E+00 1.30E+00 1.40E+00 9.20E+00 4AOE+00 5.OOE+00 3.20E+01 U

TM 15 L9474-02 6/22/2005 Cs-134 1.OOE-01 1.40E+00 4.70E+00 TM TM 15 15 L9474-02 L9474-02 6/22/2005 6/22/2005 Cs-137 Fe-59 1.1 OE+00 6.1 OE+00 1.10E+00 4.60E+00 3.80E+00 1.50E+01 L

TM 15 L9474-02 6/2212005 1-131 8.OOE-01 2.70E+00 9.1 OE+00 TM TM 15 15 L9474-02 L9474-02 6/22/2005 6/22/2005 1-131 K-40 La-140

-1.40E-01 1.52E+03

-7.OOE-01 2.60E-02 4.80E+01 2.90E+00 8.60E-01 5.80E+01 1.OOE+01

L TM 15 L9474-02 6/22/2005 TM 15 L9474-02 6/22/2005 Mn-54 3.OOE-01 1.1OE+00 3.90E+00 TM 15 L9474-02 6/22/2005 Nb-95 -2.OOE-01 1.50E+O0 5.30E+00 TM 15 L9474-02 6/22/2005 Ru-103 -2.30E+00 1.30E+O0 4.70E+00 TM 15 L9474-02 6/22/2005 Ru-1 06 O.OOE+00 9.30E+00 3.30E+01 TM 15 L9474-02 6/22/2005 Sb-1 24 8.OOE-01 2.90E+00 1.OOE+01 TM 15 L9474-02 6/22/2005 Sb-125 O.OOE+OO 2.50E+00 8.70E+00 TM 15 L9474-02 6/22/2005 Se-75 4.OOE-01 1.IOE+00 3.90E+00 TM 15 L9474-02 6/22/2005 Zn-65 -1.20E+00 3.1OE+O0 1.1OE+01 TM 15 L9474-02 6/22/2005 Zr-95 -3.20E+00 2.30E+00 8.50E+00 TM 15 L9528-02 7/6/2005 AcTh-228 1.14E+01 6.90E+00 2.20E+01 TM 15 L9528-02 7/6/2005 Ag-108m -1.OOE-01 1.50E+00 5.20E+00 TM 15 L9528-02 7/6/2005 Ag-11Om -1.OOE-01 2.40E+00 8.70E+00 TM 15 L9528-02 7/6/2005 Ba-140 2.40E+00 3.1OE+O0 1.1OE+01 TM 15 L9528-02 7/6/2005 Be-7 -7.OOE+OO 1.50E+01 5.50E+01 TM 15 L9528-02 7/6/2005 Ce-141 -4.40E+00 2.20E+00 8.20E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-185-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCilL) (pCi/L) (pCilL)

TM 15 L9528-02 7/6/2005 Ce-144 2.00E-01 7.70E+00 2.70E+01.

TM 15 L9528-02 7/6/2005 Co-57 -5.30E-01 9.10E-01 3.20E+O0 L TM TM 15 15 L9528-02 L9528-02 7/6/2005 7/6/2005 Co-58 Co-60

-1.30E+00 3.40E+00 2.1OE+0O 2.1 0E+00 7.80E+0()

6.60E+0()

TM 15 L9528-02 7/6/2005 Cr-51 -1.40E+01 1.40E+01 5.20E+OI L TM TM 15 15 L9528-02 L9528-02 7/6/2005 7/6/2005 Cs-134 Cs-1 37 1.OOE+00

-2.00E-01 1.90E+00 1.90E+00 6.80E+0()

6.70E+0()

TM 15 L9528-02 7/6/2005 Fe-59 1.60E+00 6.OOE+00 2.20E+OI LU TM 15 L9528-02 7/6/2005 7/6/2005 1-131 1-131

-5.80E-02 5.80E+00 1.IOE-02 2.70E+00 6.60E-OI 8.60E+0O TM 15 L9528-02 K-40 1.41E+03 7.60E+01 9.70E+OI

U TM TM TM 15 15 15 L9528-02 L9528-02 L9528-02 7/6/2005 7/6/2005 La-140 7/6/2005 Mn-54 2.70E+00 2.30E+00 3.60E+00 2.20E+00 1.30E+O'I 7.50E+0)

TM 15 L9528-02 7/612005 Nb-95 -2.1OE+00 2.1OE+00 8.1 OE+0)

Ru-103 -2.30E+00 1.70E+00 6.60E+0)

U TM TM TM 15 15 15 L9528-02 L9528-02 L9528-02 7/6/2005 7/6/2005 Ru-106 7/6/2005 Sb-124 2.OOE+00

-2.90E+00 1.40E+01 4.90E+00 5.OOE+OI 2.OOE+OI 3.90E+00 4.60E+00 1.60E+OI U TM TM TM 15 15 15 L9528-02 L9528-02 L9528-02 7/6/2005 7/6/2005 7/6/2005 Sb-125 Se-75 Zn-65

-3.60E+00 O.OOE+00 1.80E+00 4.70E+00 6.70E+0) 1.70E+O I TM 15 L9528-02 7/6/2005 Zr-95 5.80E+00 3.20E+00 1.OOE+O I l TM 15 L9624-02 7/20/2005 AcTh-228 -4.80E+00 6.70E+00 2.40E+O I TM 15 L9624-02 7/20/2005 Ag-108m 6.OOE-01 1.20E+00 4.10E+0O TM 15 L9624-02 7/20/2005 Ag-11 Om -3.OOE+00 2.50E+00 9.20E+0')

L9624-02 7/20/2005 Ba-140 -1.50E+00 3.1OE+00 1.20E+OI U TM TM TM 15 15 15 L9624-02 7/20/2005 Be-7 L9624-02 7/20/2005 Ce-141

-1.70E+01 8.OOE-01 1.30E+01 2.20E+00 4.70E+0 1 7.50E+O0)

TM 15 L9624-02 7/20/2005 Ce-144 O.OOE+O0 7.30E+00 2.50E+Ol J TM 15 15 L9624-02 L9624-02 7/20/2005 7/20/2005 Co-57 Co-58 1.13E+00

-2.10E+00 9.50E-01 1.70E+00 3.20E+01) 6.40E+0)

TM 7.OOE-01 1.80E+00 6.40E+O0 U TM TM TM 15 15 15 L9624-02 7/20/2005 Co-60 L9624-02 7/20/2005 Cr-51 L9624-02 7/2012005 Cs-1 34 1.30E+01

-2.OOE-01 1.40E+01 1.50E+00 4.70E+01 5.50E+0)

TM 15 L9624-02 7/20/2005 Cs-137 -2.1OE+00 1.50E+00 5.70E+00 6.OOE+00 2.10E+01 U TM TM TM 15 15 15 L9624-02 7/20/2005 Fe-59 L9624-02 7/20/2005 1-131 L9624-02 7/20/2005 1-131 3.60E+00 5.OOE-02 5.OOE+00 1.20E-01 3.90E+00 6.30E-01 1.30E+01 TM 15 L9624-02 7/20/2005 K-40 1.63E+03 6.60E+01 8.30E+01

TM 15 L9624-02 7/20/2005 La-140 -1.70E+00 3.50E+00 1.40E+01 TM 15 L9624-02 7/20/2005 Mn-54 -5.OOE-01 1.40E+00 5.20E+OO TM 15 L9624-02 7/20/2005 Nb-95 1.50E+00 1.80E+00 6.OOE+0O TM 15 L9624-02 7/20/2005 Ru-103 -2.20E+00 1.60E+00 5.80E+0O TM 15 L9624-02 7/20/2005 Ru-106 -1.10E+01 1.40E+01 5.OOE+01 TM 15 L9624-02 7/20/2005 Sb-124 1.40E+00 3.60E+00 1.30E+01 TM 15 L9624-02 7/20/2005 Sb-125 4.60E+00 3.50E+00 1.20E+01 TM 15 L9624-02 7/20/2005 Se-75 1.OOE-01 1.60E+00 5.40E+0O TM 15 L9624-02 7/20/2005 Zn-65 3.20E+00 3.90E+00 1.30E+01 TM 15 L9624-02 7/20/2005 Zr-95 3.OOE-01 2.60E+00 9.40E+00 TM 15 L9702-02 8/312005 AcTh-228 7.60E+00 6.70E+00 2.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-186-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC I I TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCUL) (pCUL)

IJ TM 15 L9702-02 8/3/2005 Ag-108m O.OOE+00 1.30E+00 4.70E+00 TM 15 L9702-02 8/3/2005 Ag-11Om -1.20E+00 2.80E+00 9.90E+00 TM 15 L9702-02 8t3/2005 Ba-140 -2.90E+00 3.60E+00 1.40E+01 TM 15 L9702-02 8/3/2005 Be-7 O.OOE+00 1.30E+01 4.70E+01 TM 15 L9702-02 8/3/2005 Ce-141 -2.20E+00 2.40E+00 8.30E+00 TM 15 L9702-02 8/3/2005 Ce-144 4.80E+00 8.30E+00 2.80E+01 TM 15 L9702-02 8/3/2005 Co-57 -4.OOE-01 1.OOE+00 3.60E+00 TM 15 L9702-02 8/3/2005 Co-58 -8.OOE-01 1.90E+00 6.80E+00 'I1 TM 15 L9702-02 8/3/2005 Co-60 9.OOE-01 2.1 OE+00 7.30E+00 CL4 TM 15 L9702-02 8/3/2005 Cr-51 2.20E+01 1.40E+01 4.50E+01 TM 15 L9702-02 8/3/2005 Cs-134 -2.20E+00 1.90E+00 7.1 OE+00 TM 15 L9702-02 8/3/2005 Cs-1 37 2.50E+00 1.60E+00 5.1 OE+00 TM 15 L9702-02 8/3/2005 Fe-59 3.30E+00 5.90E+00 2.OOE+01 TM 15 L9702-02 8/3/2005 1-131 -5.00E+00 3.60E+00 1.30E+01 TM 15 L9702-02 8/3/2005 1-131 -8.20E-02 1.60E-02 6.OOE-01 TM 15 L9702-02 8/3/2005 K-40 1.69E+03 7.20E+01 1.1 OE+02

TM 15 L9702-02 8/3/2005 La-140 -3.40E+00 4.1 OE+00 1.60E+01 TM 15 L9702-02 8/3/2005 Mn-54 -1.1OE+00 1.80E+00 6.60E+00 TM 15 L9702-02 8/3/2005 Nb-95 -1.1OE+00 2.OOE+00 7.20E+00 iI TM 15 L9702-02 8/3/2005 Ru-103 -5.70E+00 1.70E+00 6.80E+00 TM 15 L9702-02 8/3/2005 Ru-1 06 5.OOE+00 1.50E+01 5.20E+01 TM TM TM 15 15 15 L9702-02 L9702-02 L9702-02 8/3/2005 8/3/2005 8/3/2005 Sb-124 Sb-125 Se-75 4.30E+00 2.80E+00 3.70E+00 3.60E+00 4.OOE+00 1.70E+00 1.20E+01 1.40E+01 5.40E+00 L

TM 15 L9702-02 8/3/2005 Zn-65 -2.60E+00 4.30E+00 1.60E+01 TM 15 L9702-02 8/3/2005 Zr-95 5.90E+00 2.90E+00 9.50E+00 TM TM 15 15 L9766-02 L9766-02 8/17/2005 8/17/2005 AcTh-228 Ag-108m Ag-110m 5.40E+00

-5.OOE-01 3.40E+00 7.30E+00 1.30E+00 2.40E+00 2.50E+01 4.50E+00 8.1OE+00 U

L TM 15 L9766-02 8/17/2005 TM 15 L9766-02 8/17/2005 Ba-140 3.1 OE+00 3.30E+00 1.1OE+01 TM 15 L9766-02 8/17/2005 Be-7 -1.50E+01 1.20E+01 4.60E+01 TM 15 L9766-02 8/17/2005 Ce-141 -9.70E+00 3.50E+00 1.30E+01 TM 15 L9766-02 8/17/2005 Ce-144 1.45E+01 8.1 OE+00 2.70E+01 TM 15 L9766-02 8/17/2005 Co-57 -1.70E+00 1.OOE+00 3.60E+00 TM 15 L9766-02 8/17/2005 Co-58 -3.80E+00 2.1 OE+00 7.80E+00 TM 15 L9766-02 8/17/2005 Co-60 5.30E+00 2.1 OE+00 6.70E+O0 TM 15 L9766-02 8/17/2005 Cr-51 3.OOE+00 1.30E+01 4.40E+01 TM 15 L9766-02 8/17/2005 Cs-134 4.1OE+00 1.70E+00 5.40E+00 TM 15 L9766-02 8/17/2005 Cs-137 1.1OE+00 1.60E+00 5.40E+00 TM 15 L9766-02 8/17/2005 Fe-59 -2.OOE+00 5.40E+00 2.OOE+01 TM 15 L9766-02 8/17/2005 1-131 -1.30E+00 3.40E+00 1.20E+01 TM 15 L9766-02 8/17/2005 1-131 -1.OOE-02 1.20E-01 7.50E-01 TM 15 L9766-02 8/17/2005 K-40 1.49E+03 6.80E+01 1.1OE+02 TM 15 L9766-02 8/17/2005 La-140 3.50E+00 3.70E+00 1.30E+01 TM 15 L9766-02 8/17/2005 Mn-54 1.OOE-01 1.70E+00 5.90E+00 TM 15 L9766-02 8/17/2005 Nb-95 -1.30E+00 2.20E+00 7.80E+00 TM 15 L9766-02 8/17/2005 Ru-103 -1.40E+00 1.80E+00 6.40E+00 TM 15 L9766-02 8/17/2005 Ru-106 -1.30E+01 1.30E+01 4.90E+01 TM 15 L9766-02 8/17/2005 Sb-1 24 6.40E+00 3.80E+00 1.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-187-

r L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 15 L9766-02 8/17/2005 Sb-125 O.OOE+00 4.1OE+00 1.40E+OI TM 15 L9766-02 8/17/2005 Se-75 2.1OE+00 1.70E+00 5.60E+0O L TM 15 L9766-02 8/17/2005 Zn-65 -4.70E+00 4.50E+00 1.70E+01 1.OOE+OI TM 15 L9766-02 8/17/2005 Zr-95 4.20E+00 3.10E+00 TM 15 L9880-02 9/14/2005 AcTh-228 7.40E+00 6.10E+00 2.00E+01 L TM TM 15 15 L9880-02 L9880-02 9/14/2005 9/14/2005 Ag-108m Ag-1i1m

-8.00E-01 3.40E+00 1.40E+00 2.OOE+00 5.00E+O) 6.60E+O) 15 L9880-02 9114/2005 Ba-140 O.OOE+00 2.50E+00 9.40E+0)

L TM TM TM 15 15 L9880-02 L9880-02 9/14/2005 9/14/2005 Be-7 Ce-141 1.20E+01 6.OOE+00 1.30E+01 2.90E+00 4.50E+01 9.30E+O0 L TM TM TM 15 15 15 L9880-02 L9880-02 L9880-02 9/14/2005 9/14/2005 9/14/2005 Ce-144 Co-57 Co-58

-2.10E+00 8.OOE-01

-6.OOE-01 8.40E+00 1.10E+00 1.80E+00 2.90E+01 3.80E+03 6.30E+00 TM 15 L9880-02 9/14/2005 Co-60 5.OOE-01 2.OOE+00 7.10E+OD TM 15 L9880-02 9/14/2005 Cr-51 3.OOE+00 1.50E+01 5.20E+01 TIV 15 L9880-02 9/14/2005 Cs-134 -8.OOE-01 1.80E+00 6.40E+00 TM 15 L9880-02 9/1412005 Cs-137 1.90E+00 1.50E+00 5.OOE+OO 9/14/2005 Fe-59 2.70E+00 4.60E+00 1.60E+01 L TM TIV.

TN.

15 15 15 L9880-02 L9880-02 L9880-02 9/14/2005 9/14/2005 1-131 1-131

-3.30E+00 5.70E-02 4.20E+00 9.10E-02 1.50E+01 4.OOE-01 9/14/2005 K-40 1.45E+03 5.70E+01 7.20E+01 L TM TN; TM 15 15 15 L9880-02 L9880-02 L9880-02 9/14/2005 9/14/2005 La-140 Mn-54 O.OOE+OO O.OOE+00 2.90E+00 1.50E+00 1.IOE+01 5.20E+00 TNI 15 L9880-02 9/1412005 Nb-95 1.60E+00 2.OOE+00 6.70E+00 TMI 15 L9880-02 9/14/2005 Ru-103 -3.50E+00 1.8OE+00 6.80E+00 L TNI TMI 15 15 L9880-02 L9880-02 9/14/2005 9/14/2005 Ru-106 Sb-124 2.80E+01

-1.1OE+00 1.SOE+01 3.90E+00 4.90E+01 1.40E+01 TiVI 15 L9880-02 9/14/2005 Sb-125 -6.OOE-01 3.70E+00 1.30E+01 TMI 15 L9880-02 9/14/2005 Se-75 2.OOE-01 1.90E+00 6.60E+C0 TMvl 15 L9880-02 9/14/2005 Zn-65 -9.OOE-01 4.OOE+00 1.40E+01 TM 15 L9880-02 9/14/2005 Zr-95 1.60E+00 2.90E+00 1.OOE+01 L TiMI TM 1

15 5 L9963-02 L9963-02 9/28/2005 9/28/2005 AcTh-228 Ag-108m 1.20E+01

-1.00E-01 1.20E+01 1.40E+00 4.20E+t1 5.OOE+O0 TNVI 15 L9963-02 9128/2005 Ag-110Om -4.00E-01 2.40E+00 8.90E+00 Ba-140 3.30E+00 3.40E+00 1.20E+01 L TMVI TIMI TM 15 15 15 L9963-02 L9963-02 L9963-02 9/28/2005 9/28/2005 9/28/2005 Be-7 Ce-141

-3.OOE+00 1.OOE+00 1.40E+01 2.20E+00 4.90E+01 7.40E+O0 TMs 15 L9963-02 9/28/2005 Ce-144 -3.OOE+00 7.70E+00 2.70E+t1 TMl 15 L9963-02 9/28/2005 Co-57 -2.OOE-01 9.10E-01 3.20E+O0 TMl 15 L9963-02 9/28/2005 Co-58 1.10E+00 2.10E+00 7.30E+t0 TM 15 L9963-02 9/28/2005 Co-60 3.OOE-01 2.30E+00 8.20E+O0 TMI 15 L9963-02 9/28/2005 Cr-51 -1.50E+01 1.40E+01 5.10E+01 TMl 15 L9963-02 9/28/2005 Cs-134 -4.1 OE+00 1.90E+00 7.70E+(O0 TM 15 L9963-02 9/28/2005 Cs-137 -1.20E+00 1.80E+00 6.70E+O0 TM 15 L9963-02 9/28/2005 Fe-59 -4.60E+00 4.70E+00 1.80E+01 TMI 15 L9963-02 9/28/2005 1-131 6.OOE-01 3.80E+00 1.30E+01 TM 15 L9963-02 9/28/2005 1-131 2.OOE-02 1.30E-01 7.30E-(1 TM\ 15 L9963-02 9/28/2005 K-40 1.58E+03 7.60E+01 9.10E+01 TA1 15 L9963-02 9/28/2005 La-140 3.80E+00 4.OOE+00 1.40E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-188-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 15 L9963-02 9/28/2005 Mn-54 -3.40E+00 1.80E+00 7.20E+00 TM 15 L9963-02 9/28/2005 Nb-95 7.OOE-01 2.20E+00 7.70E+00 TM 15 L9963-02 9/28/2005 Ru-1 03 -1.1 OE+00 1.80E+00 6.70E+00 I TM 15 L9963-02 9/28/2005 Ru-106 -1.70E+01 1.50E+01 5.60E+01 TM 15 L9963-02 9/28/2005 Sb-124 1.90E+00 4.00E+00 1.50E+01 TM 15 L9963-02 9/28/2005 Sb-125 1.20E+00 4.30E+00 1.50E+01 TM 15 L9963-02 9/28/2005 Se-75 2.50E+00 1.90E+00 6.30E+00 TM 15 L9963-02 9/28/2005 Zn-65 -1.70E+00 4.20E+00 1.60E+01 TM 15 L9963-02 9/28/2005 Zr-95 -3.60E+00 3.60E+00 1.40E+01 TM 15 L10021-0210/12/2005 AcTh-228 1.20E+00 5.00E+00 1.80E+01 TM 15 L10021-0210/1212005 Ag-108m -8.OOE-01 1.30E+00 4.50E+00 TM 15 L10021-0210/1212005 Ag-110m -3.00E-01 2.50E+00 9.0OE+00 TM 15 L10021-0210/1212005 Ba-140 -5.80E+00 2.50E+00 1.10E+01 U TM 15 L10021-0210/1212005 Be-7 -6.OOE+00 1.30E+01 4.60E+01 TM 15 L10021-0210/12/2005 Ce-141 -3.20E+00 2.00E+00 7.1OE+00 TM 15 L10021-0210/12/2005 Ce-144 -4.50E+00 7.80E+00 2.70E+01 TM 15 L10021-0210/12/2005 Co-57 1.30E+00 1.OOE+00 3.30E+00 TM 15 L10021-0210/12/2005 Co-58 -1.50E+00 1.60E+00 5.90E+00 TM 15 L10021-0210/12/2005 Co-60 2.OOE+00 2.50E+00 8.70E+00 TM 15 L10021-0210/12/2005 Cr-51 -2.OOE+00 1.50E+01 5.10E+01 TM 15 L10021-0210/12/2005 Cs-134 7.00E-01 1.60E+00 5.50E+00 TM 15 L10021-0210/12/2005 Cs-137 1.70E+00 1.90E+00 6.30E+00 TM 15 L10021-0210/12/2005 Fe-59 7.20E+00 4.20E+00 1.40E+01 TM 15 L10021-0210/12/2005 1-131 -7.70E-02 1.40E-02 4.80E-01 TM 15 L10021-0210/12/2005 1-131 2.30E+00 2.90E+00 9.70E+00 TM 15 L10021-0210/12/2005 K-40 1.51E+03 6.80E+01 8.80E+01

LT TM 15 L10021-0210/12/2005 La-140 -6.60E+00 2.80E+00 1.30E+01 TM TM 15 15 L10021-0210112/2005 L10021-0210/12/2005 Mn-54 Nb-95 Ru-103

-1.20E+00

-8.OOE-01 0.OOE+00 1.60E+00 1.90E+00 1.60E+00 5.80E+00 6.80E+00 5.70E+00 L

TM 15 L10021-0210112/2005 TM 15 L10021-0210/12/2005 Ru-106 1.40E+01 1.60E+01 5.40E+01 TM 15 L10021-0210/12/2005 Sb-124 7.OOE-01 3.80E+00 1.40E+01 TM 15 L10021-0210/12/2005 Sb-125 -5.30E+00 4.10E+00 1.50E+01 TM 15 L10021-0210/12/2005 Se-75 2.OOE-01 1.70E+00 5.70E+00 TM TM TM 15 15 15 L10021-0210/12/2005 L10021-0210/1212005 L10167-02 11/9/2005 Zn-65 Zr-95 AcTh-228

-5.00E-01

-1.OOE-01 5.40E+00 4.70E+00 2.90E+00 6.10E+00 1.70E+01 1.IOE+01 2.OOE+01 LI TM TM 15 15 L10167-02 11/9/2005 L10167-02 11/9/2005 L10167-02 11/9/2005 Ag-108m Ag-110m Ba-140

-3.60E-01 9.OOE-01 2.OOE-01 7.90E-01 1.40E+00 1.80E+00 2.70E+00 4.90E+00 6.50E+00 i

TM 15 TM 15 L10167-02 11/9/2005 Be-7 2.40E+00 8.10E+00 2.80E+01 TM 15 L10167-02 11/9/2005 Ce-141 7.OOE-01 1.20E+00 3.90E+00 L TM 15 L10167-02 11/9/2005 Ce-144 -2.70E+00 4.60E+00 1.60E+01 TM 15 L10167-02 11/9/2005 Co-57 -1.38E+00 5.90E-01 2.00E+00 TM 15 L10167-02 11/9/2005 Co-58 7.OOE-01 I.OOE+00 3.40E+00 TM 15 L10167-02 11/9/2005 Co-60 8.OOE-01 1.40E+00 4.70E+00 L TM 15 L10167-02 11/9/2005 Cr-51 2.40E+00 9.00E+00 3.IOE+01 TM 15 L10167-02 11/9/2005 Cs-134 1.30E+00 1.00E+00 3.40E+00 TM 15 L10167-02 11/9/2005 Cs-137 1.80E+00 1.10E+00 3.50E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-189-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 CONC STD.DEV. MDC SAMPLE END L TYPE STATION LSN DATE NUCLIDE Fe-59 (pCi/L)

-6.OOE-01 (pCi/L) 2.60E+00 (pCi/L) 9.00E+OC TM 15 L10167-02 11/9/2005 2.50E+00 8.50E+OC' L TM TM TM 15 15 15 L10167-02 L10167-02 L10167-02 11/9/2005 11/9/2005 11/9/2005 1-131 1-131 K-40

-2.1 OE+00 1.OOE-01 1.49E+03 1.50E-01 4.00E+01 6.20E-01 5.70E+01 L10167-02 11/9/2005 La-140 2.00E-01 2.1 OE+00 7.50E+OC L TM TM TM 15 15 15 L10167-02 L10167-02 11/9/2005 11/9/2005 Mn-54 Nb-95

-3.80E-01 5.00E-01 9.20E-01 1.20E+00 3.20E+OO 4.00E+00 TM 15 L10167-02 11/9/2005 Ru-103 -4.OOE-01 I.OOE+00 3.50E+OCo L TM TM 15 15 L10167-02 L10167-02 11/9/2005 11/9/2005 Ru-1 06 Sb-I124 3.OOE+00

-2.80E+00 9.40E+00 2.50E+00 3.30E+00 3.20E+01 9.30E+OCO 1.20E+01 TM 15 L10167-02 11/9/2005 Sb-125 -2.80E+00 L TM TM TM 15 15 15 L10167-02 L10167-02 L10167-02 11/9/2005 11/9/2005 11/9/2005 Se-75 Zn-65 Zr-95

-1.23E+00

-1.80E+00 1.40E+00 9.90E-01 2.50E+00 1.60E+00 3.40E+OO 8.90E+OO 5.40E+00 L10268-02 12/7/2005 AcTh-228 -5.10E+00 7.70E+00 2.90E+01 L TM TM TM 15 15 15 L10268-02 L10268-02 12/7/2005 12/7/2005 Ag-108m Ag-11Om

-7.OOE-01

-2.80E+00 1.40E+00 2.40E+00 5.10E+OCI 9.40E+00 TM 15 L10268-02 1217/2005 Ba-140 6.60E+00 4.50E+00 1.50E+01 L TM' TM 15 15 LI 0268-02 L10268-02 12/7/2005 12/7/2005 Ce-7 Ce-141

-9.OOE+00

-8.00E-01 1.40E+01 2.30E+00 5.20E+01 8.10E+00 TM 15 L10268-02 12/7/2005 C-144 5.10E+00 7.70E+00 2.60E+01 L TM TM 15 15 15 L10268-02 L10268-02 L10268-02 121712005 12/7/2005 12/7/2005 Co-57 Co-58 Co-60

-1.47E+00

-4.00E-01 9.00E-01 9.50E-01 2.00E+00 2.20E+00 3.50E+00 7.40E+0(

8.00E+00 TM 1.50E+01 5.30E+0O1 L TM TM TM 15 15 15 L10268-02 L10268-02 L10268-02 12/7/2005 12/7/2005 12/7/2005 Cr-51 Cs-134 Cs-137 7.00E+00 2.90E+00

-2.1 OE+00 2.20E+00 1.90E+00 7.30E+00 7.20E+00 TM 15 L10268-02 12/7/2005 Fe-59 1.20E+00 4.30E+00 1.60E+0O L TM TM 15 15 L10268-02 L10268-02 1217/2005 12/7/2005 1-131 1-131 2.90E-02 4.60E+00 9.OOE-02 4.OOE+00 4.30E-01 1.30E+OI TM 15 L10268-02 12/7/2005 K-40 1.29E+03 7.20E+01 1.00E+02 L TM TM TM 15 15 15 L10268-02 L10268-02 L10268-02 12/7/2005 12/7/2005 12/7/2005 La-140 Mn-54 Nb-95 7.60E+00

-3.30E+00

-2.30E+00 5.1 OE+00 2.1 OE+00 2.70E+00 1.70E+OI 8.002E+0) 1.00E+01 TM 15 L10268-02 12/7/2005 Ru-I 03 1.80E+00 2.OOE+00 6.80E+0)

TM 15 L10268-02 1217/2005 Ru-106 -1.20E+01 1.60E+01 6.00E+0OI TM 15 L10268-02 12/7/2005 Sb-124 -7.90E+00 4.40E+00 2.00E+0OI TM 15 L10268-02 12/7/2005 Sb-125 *-1.20E+00 4.60E+00 1.60E+OI TM 15 L10268-02 12/7/2005 Se-75 O.OOE+00 1.80E+00 6.50E+01)

TM 15 LI 0268-02 12/7/2005 Zn-65 -3.50E+00 4.30E+00 1.70E+0 I TM 15 L10268-02 12/7/2005 Zr-95 -4.50E+00 3.60E+00 1.40E+01 TM 20 L8729-03 1/19/2005 AcTh-228 -1.30E+00 8.20E+00 3.20E+01 TM 20 L8729-03 1/19/2005 Ag-108m 3.00E-01 1.60E+00 5.80E+0)

TM 20 L8729-03 1/19/2005 Ag-11 Om 3.60E+00 2.80E+00 9.30E+O)

TM 20 L8729-03 1/19/2005 Ba-140 1.10E+00 1.70E+00 7.00E+0)

TM 20 L8729-03 1/19/2005 8e-7 1.60E+01 1.50E+01 5.10E+01 TM 20 L8729-03 1/19/2005 Ce-141 1.60E+00 3.10E+00 1.10E+01 TM 20 L8729-03 1/19/2005 Ce-144 O.OOE+00 1.10E+01 4.00E+01 TM 20 L8729-03 1/19/2005 Co-57 -1.70E+00 1.50E+00 5.70E+0)

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-190-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 20 L8729-03 1/1912005 Co-58 1.60E+00 2.1OE+00 7.50E+00 TM 20 L8729-03 1/19/2005 Co-60 *1.20E+00 2.50E+00 1.OOE+01 TM 20 L8729-03 1/19/2005 Cr-51 5.00E+00 1.60E+01 5.70E+01 TM 20 L8729-03 1/19/2005 Cs-134 -4.70E+00 2.90E+00 1.20E+01 TM TM TM 20 20 20 L8729-03 L8729-03 L8729-03 1/19/2005 1/19/2005 1/19/2005 Cs-137 Fe-59 1-131 9.00E-01 3.10E+00 5.OOE-01 1.90E+00 6.50E+00 3.1OE+00 7.OOE+O0 2.40E+01 1.10E+01 I

TM 20 L8729-03 1/19/2005 1-131 1.90E-01 1.90E-01 6.50E-01 TM 20 L8729-03 1/19/2005 K-40 1.34E+03 9.60E+01 1.30E+02

TM 20 L8729-03 1/19/2005 La-140 1.30E+00 1.90E+00 8.OOE+00 TM 20 L8729-03 1/19/2005 Mn-54 -8.00E-01 2.10E+00 8.30E+00 TM 20 L8729-03 1/19/2005 Nb-95 -1.IOE+00 2.40E+00 9.40E+00 TM 20 L8729-03 1/19/2005 Ru-103 -7.OOE-01 1.90E+00 7.20E+O0 TM 20 L8729-03 1/19/2005 Ru-106 -1.30E+01 1.40E+01 5.90E+01 TM 20 L8729-03 1/19/2005 Sb-124 O.OOE+O0 4.O0E+00 1.80E+01 TM 20 L8729-03 1/19/2005 Sb-125 -8.70E+00 4.80E+00 2.OOE+01 TM 20 L8729-03 1/19/2005 Se-75 1.60E+00 2.30E+00 7.90E+00 TM 20 L8729-03 1/19/2005 Zn-65 4.20E+00 5.70E+00 2.OOE+01 TM 20 L8729-03 1/19/2005 Zr-95 1.60E+00 4.OOE+00 1.50E+01 TM 20 L8865-03 2/16/2005 AcTh-228 -1.90E+00 6.OOE+00 2.20E+01 TM 20 L8865-03 2/16/2005 Ag-108m 7.OOE-01 1.30E+00 4.60E+00 TM 20 L8865-03 2/16/2005 Ag- 1Om -1.60E+00 2.20E+00 8.50E+00 TM 20 L8865-03 2/16/2005 Ba-140 -7.OOE-01 3.70E+00 1.40E+01 TM 20 L8865-03 2/16/2005 Be-7 -2.OOE+00 1.30E+01 4.70E+01 TM 20 L8865-03 2/16/2005 Ce-141 1.80E+00 2.50E+00 8.40E+00 TM 20 L8865-03 2/16/2005 Ce-144 -6.OOE+00 8.50E+00 3.OOE+01 L TM 20 L8865-03 2/16/2005 Co-57 2.1OE+00 1.IOE+00 3.70E+00 TM 20 L8865-03 2/16/2005 Co-58 2.OOE-01 1.70E+00 6.00E+00 TM 20 L8865-03 2/16/2005 Co-60 1.OOE+00 1.90E+00 6.60E+00 TM 20 L8865-03 2/16/2005 Cr-51 1.20E+01 1.60E+01 5.40E+01 TM 20 L8865-03 2/16/2005 Cs-134 -1.50E+00 1.50E+00 6. OE+00 TM 20 L8865-03 2/16/2005 Cs-137 -5.OOE-01 1.60E+00 5.90E+00 TM 20 L8865-03 2/16/2005 Fe-59 6.30E+00 5.30E+00 1.80E+01 TM 20 L8865-03 2/16/2005 1-131 1.40E-01 1.90E-01 8.10E-01 TM TM 20 20 L8865-03 L8865-03 L8865-03 2/16/2005 2/16/2005 2/16/2005 1-131 K-40 La-140

-4.OOE-01 1.38E+03

-8.OOE-01 4.90E+00 6.90E+01 4.30E+00 1.70E+01 8.10E+01 1.60E+01

1 TM 20 TM 20 L8865-03 2/16/2005 Mn-54 -2.80E+00 1.60E+00 6.30E+00 TM 20 L8865-03 2/16/2005 Nb-95 O.OOE+00 1.80E+00 6.70E+00 TM 20 L8865-03 2/16/2005 Ru-1 03 -3.70E+00 1.70E+00 6.70E+00 TM 20 L8865-03 2/16/2005 Ru-106 -3.OOE+00 1.50E+01 5.60E+01 TM 20 L8865-03 2/16/2005 Sb-124 -9.OOE-01 2.OOE+00 9.50E+00 TM 20 L8865-03 2/16/2005 Sb-125 -2.50E+00 3.60E+00 1.30E+01 TM 20 L8865-03 2/16/2005 Se-75 -2.40E+00 1.70E+00 6.20E+00 TM 20 L8865-03 2/16/2005 Zn-65 O.OOE+O0 3.50E+00 1.30E+01 TM 20 L8865-03 2/16/2005 Zr-95 -2.40E+00 3.10E+00 1.20E+01 TM 20 L8980-03 3/16/2005 AcTh-228 -1.37E+01 8.30E+00 3.40E+01 TM 20 L8980-03 3/16/2005 Ag-108m 4.OOE-01 1.70E+00 6.OOE+00 TM 20 L8980-03 3/16/2005 Ag-110m -2.20E+00 2.80E+00 1.10E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-191-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMFLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 20 L8980-03 3/16/2005 Ba-140 -2.80E+OO 2.50E+00 1.20E+0O L TM TM TM 20 20 20 L8980-03 L8980-03 L8980-03 3/16/2005 3/16/2005 3/16/2005 Be-7 Ce-141 Ce-144 2.1OE+01 3.50E+00 8.OOE+00 1.80E+01 3.20E+00 1.20E+01 6.1OE+OI I.IOE+OI 3.90E+OI TM 20 L8980-03 3116/2005 Co-57 O.OOE+OO 1.40E+00 4.90E+0()

L I TM TM 20 20 L8980-03 L8980-03 3/16/2005 3/16/2005 Co-58 Co-60 1.OOE-01 O.OOE+00 1 .80E+00 2.20E+00 7.OOE+0O) 8.70E+0I TM 20 L8980-03 3/16/2005 Cr-51 -1.IOE+01 1.60E+01 6.OOE+O-l TM 20 L8980-03 3/16/2005 Cs-1 34 1.20E+00 2.20E+00 8.1OE+0O TM 20 L8980-03 3/16/2005 Cs-137 2.30E+00 1.80E+00 6.20E+0O TM 20 L8980-03 3/16/2005 Fe-59 -9.1OE+00 7.70E+00 3.1 OE+O I L TM TM 20 20 20 L8980-03 L8980-03 L8980-03 3/16/2005 3/16/2005 3/16/2005 1-131 1-131 K-40 6.70E+O0 4.30E-01 1.27E+03 3.50E+00 2.40E-01 8.80E+01 1.10E+OI 6.50E-O I 1.20E+0 2 TM TM 20 L8980-03 3/16/2005 La-140 -3.20E+00 2.90E+00 1.40E+O I TM 20 L8980-03 3/16/2005 Mn-54 -6.OOE-01 2.20E+00 8.20E+00J TM 20 L8980-03 3/16/2005 Nb-95 1.90E+00 2.20E+00 7.80E+0')

TM 20 L8980-03 3/16/2005 Ru-103 1.70E+00 1.90E+00 6.40E+01)

TM 20 L8980-03 3/16/2005 Ru-1 06 1.40E+01 1.50E+01 5.40E+0 1 TM 20 L8980-03 3/16/2005 Sb-124 -5.60E+00 3.40E+00 1.80E+01 TM 20 L8980-03 3/16/2005 Sb-1 25 -1.27E+01 5.OOE+00 2.1 OE+01 L TM TM 20 20 L8980-03 L8980-03 3/16/2005 3/16/2005 Se-75 Zn-65 Zr-95

-3.50E+00 2.60E+00 4.20E+00 2.30E+00 5.40E+00 3.20E+00 8.60E+03 1.90E+01 1.1OE+01 TM 20 L8g80-03 3/16/2005 L TM TM TM 20 20 20 L9123-03 L9123-03 L91 23-03 4/13/2005 4/13/2005 4/13/2005 AcTh-228 Ag-108m Ag-1 1Om 4.1OE+00 2.OOE-01 7.OOE-01 6.60E+0O 1.30E+00 2.50E+00 2.30E+01 4.50E+00 8.90E+0O L9123-03 4/13/2005 Ba-140 -4.70E+00 2.20E+OO 1.1OE+01 L TM TM TM 20 20 20 L9123-03 L9123-03 4/13/2005 4/13/2005 Be-7 Ce-141 2.OOE+00

-2.OOE-01 1 .30E+01 2.30E+OO 4.80E+01 7.90E+00 TM. 20 L91 23-03 4/13/2005 Ce-1 44 5.OOE-01 9.50E+00 3.30E+01 L TV TIM 20 20 L91 23-03 L9123-03 4/13/2005 4/13/2005 Co-57 Co-58 4/13/2005 Co-60

-8.OOE-01

-4.OOE-01 1.20E+00 I.1OE+OO 1.50E+00 1.50E+00 4.10E+OO 5.70E+O0 5.50E+00 TIV 20 L9123-03 TM 20 L9123-03 4/13/2005 Cr-51 -1 .OOE+O0 1.30E+01 4.70E+01 TM 20 L9123-03 4/13/2005 Cs-1 34 -I .OOE-01 1.70E+00 6.30E+00 TM 20 L91 23-03 4/13/2005 Cs-1 37 -4.OOE-01 1.80E+00 6.50E+CO TM 20 L9123-03 4/13/2005 Fe-59 9.1 OE+00 5.20E+00 1.70E+01 TM 20 L9123-03 4/13/2005 1-131 -7.30E-02 1.70E-02 6.70E-t1 TM 20 L9123-03 4/13/2005 1-131 3.OOE-01 2.90E+O0 1.OOE+tl1 TM 20 L9123-03 4/13/2005 K-40 1.43E+03 7.50E+01 7.80E+0l TM 20 L9123-03 4/13/2005 La-140 -5.40E+00 2.50E+00 1.20E+01 TM 20 L9123-03 4/13/2005 Mn-54 1.80E+00 1.60E+00 5.30E+OO TM 20 L9123-03 4/13/2005 Nb-95 5.OOE-01 1.80E+00 6.60E+'0O TM 20 L9123-03 4/13/2005 Ru-1 03 -3.30E+00 2.OOE+00 8.30E+O0 TM 20 L9123-03 4/13/2005 Ru-1 06 -7.OOE+00 1.60E+01 6.OOE+01 TM 20 L9123-03 4/13/2005 Sb-1 24 -6.90E+00 3.50E+00 1.70E+01 TMI 20 L9123-03 4/13/2005 Sb-125 -4.90E+00 4.1OE+00 1.60E+01 TM 20 L9123-03 4/13/2005 Se-75 3.OOE+00 1.80E+00 5.80E+CIO

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-192-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 J SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCitL) (pCi/L)

TM 20 L9123-03 4/13/2005 Zn-65 -6.OOE-01 4.OOE+0O 1.50E+01 TM 20 L9123-03 4/13/2005 Zr-95 3.70E+00 2.70E+00 9.OOE+00 IJ TM 20 L9209-03 4/27/2005 AcTh-228 -4.70E+00 7.30E+00 2.80E+01 TM TM 20 20 L9209-03 L9209-03 4/27/2005 4/27/2005 Ag-108m Ag-11Om 5.OOE-01

-2.60E+00 1.30E+00 2.70E+00 4.60E+00 1.1OE+01 1.30E+01 jI TM 20 L9209-03 4/27/2005 Ba-140 -9.OOE-01 3.10E+00 TM TM 20 20 L9209-03 L9209-03 4/27/2005 4/27/2005 Be-7 Ce-141 1.30E+01

-4.30E+00 1.30E+01 2.70E+00 4.60E+01 9.80E+00 j

TM 20 L9209-03 4/27/2005 Ce-144 4.60E+00 9.70E+00 3.30E+01 TM 20 L9209-03 4/27/2005 Co-57 -2.OOE+OO 1.30E+00 4.80E+00 TM 20 L9209-03 4/27/2005 Co-58 1.70E+00 1.50E+00 5.20E+00 TM 20 L9209-03 4/27/2005 Co-60 3.70E+00 2.OOE+00 6.1OE+00 TM 20 L9209-03 4/27/2005 Cr-51 -5.OOE+OO 1.30E+01 4.80E+01 TM 20 L9209-03 4/27/2005 Cs-1 34 3.80E+00 1.90E+00 5.90E+00 TM 20 L9209-03 4/27/2005 Cs-1 37 O.OOE+OO 1.70E+00 6.30E+00 TM 20 L9209-03 4/27/2005 Fe-59 7.60E+00 6.1 OE+00 2.OOE+01 TM 20 L9209-03 4/27/2005 1-131 3.30E-01 2.80E-01 9.90E-01 TM 20 L9209-03 4/27/2005 1-131 -1.40E+00 3.90E+00 1.40E+01 TM 20 L9209-03 4/27/2005 K-40 1.29E+03 7.70E+01 9.60E+01 TM 20 L9209-03 4/27/2005 La-140 -I.OOE+00 3.50E+00 1.50E+01 TM 20 L9209-03 4/27/2005 Mn-54 -3.30E+00 1.90E+00 7.70E+00 TM 20 L9209-03 4/27/2005 Nb-95 -1.30E+00 2.1OE+00 8.10E+00 TM 20 L9209-03 4/27/2005 Ru-103 -3.1OE+00 1.70E+00 6.80E+00 TM 20 L9209-03 4/27/2005 Ru-106 O.OOE+OO 1.60E+01 5.70E+01 TM 20 L9209-03 4/27/2005 Sb-124 6.90E+00 3.60E+00 1.1OE+01 TM 20 L9209-03 4/27/2005 Sb-125 4.70E+00 4.1OE+00 1.40E+01 TM 20 L9209-03 4/27/2005 Se-75 -1.OOE+00 1.90E+00 6.8OE+OO TM 20 L9209-03 4/27/2005 Zn-65 -7.OOE+OO 4.80E+00 1.90E+01 TM 20 L9209-03 4/27/2005 Zr-95 1.90E+00 3.20E+00 1.1OE+01 TM 20 L9263-03 5/11/2005 AcTh-228 O.OOE+00 4.60E+00 1.60E+01 TM 20 L9263-03 5/11/2005 Ag-108m 6.OOE-01 9.80E-01 3.30E+00 TM 20 L9263-03 5/11/2005 Ag-1I1m 3.90E+00 1.70E+00 5.20E+00 TM 20 L9263-03 5/11/2005 Ba-140 -3.OOE+00 2.O0E+OO 7.90E+00 TM 20 L9263-03 5/11/2005 Be-7 -1.03E+01 9.40E+00 3.40E+01 TM 20 L9263-03 5/11/2005 Ce-141 -3.90E+00 1.90E+00 6.70E+00 TM 20 L9263-03 5/11/2005 Ce-144 -9.50E+00 6.60E+00 2.30E+01 TM 20 L9263-03 5/11/2005 Co-57 -8.OOE-02 8.50E-01 2.90E+00 TM 20 L9263-03 5/11/2005 Co-58 -2.40E+00 1.30E+00 4.90E+00 TM 20 L9263-03 5/11/2005 Co-60 1.OOE+00 1.50E+00 5.1 OE+oo TM 20 L9263-03 5/11/2005 Cr-51 5.OOE+00 1.1OE+01 3.70E+01 TM 20 L9263-03 5/11/2005 Cs-134 1.20E+00 1.30E+00 4.40E+00 TM 20 L9263-03 5/11/2005 Cs-1 37 7.OOE-01 1.20E+00 4.10E+00 TM 20 L9263-03 5/11/2005 Fe-59 2.1OE+00 3.70E+00 1.30E+01 TM 20 L9263-03 5/11/2005 1-131 5.OOE-01 2.30E+00 8.OOE+OO TM 20 L9263-03 5/11/2005 1-131 O.OOE+00 1.20E-01 7.30E-01 TM 20 L9263-03 5/11/2005 K-40 1.34E+03 4.70E+01 6.OOE+01 TM 20 L9263-03 5/11/2005 La-140 -3.50E+00 2.30E+00 9.OOE+00 TM 20 L9263-03 5/11/2005 Mn-54 3.OOE-01 1.20E+00 4.20E+00 TM 20 L9263-03 5/11/2005 Nb-95 8.OOE-01 1.50E+00 5.1OE+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-193-

L l L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC DATE NUCLIDE (pCi/L) (pCi/L) (pCilL)

L TYPE STATION LSN TM 20 L9263-03 5/11/2005 Ru-1 03 -1.1OE+00 1.30E+00 4.60E+00)

L TM TM TM 20 20 20 L9263-03 L9263-03 L9263-03 5/11/2005 5/11/2005 5/11/2005 Ru-1 06 Sb-124 Sb-125

-1.90E+01 1.90E+00 5.50E+00 1.10E+01 2.60E+00 3.20E+00 4.10OE+0'l 9.30E+00)

I .OOE+01

-3.OOE-01 1.60E+00 5.30E+0I)

U TM TM TM 20 20 20 L9263-03 L9263-03 L9263-03 5/111/2005 5/11/2005 5/11/2005 Se-75 Zn-65 Zr-95

-7.20E+00 2.90E+00 3.30E+00 2.20E+00 1.20E+0 I 7A40E+01)

TM 20 L9309-03 5/25/2005 AcTh-228 1.85E+01 8.20E+00 2.50E+0 I TM 20 L9309-03 5/25/2005 Ag-108m 7.OOE-01 1.60E+00 5.50E+0')

TM 20 L9309-03 5/25/2005 Ag-11Om -2.90E+00 3.10E+00 1.20E.01I TN' 20 L9309-03 5/25/2005 Ba-140 3.00E-01 3.70E+00 1.40E.01I TN' 20 L9309-03 5/25/2005 Be-7 -6.OOE+00 1.60E+01 5.90 E+0 1 TN 20 L9309-03 5/25/2005 Ce-141 -1.70E+00 2.90E+00 1.OOE+01 L TM TM 20 20 L9309-03 L9309-03 5/25/2005 5/25/2005 Ce-144 Co-57 1.OOE+01 7.OOE-01 1.OOE+01 1.30E+00 3.40E401 4.50E+0) 8.70E+O)

TN' 20 L9309-03 5/25/2005 Co-58 -4.OOE-01 2.40E+00 L TMI, TN!

TM' 20 20 20 L9309-03 L9309-03 L9309-03 5/25/2005 5/25/2005 5/25/2005 Co-60 Cr-51 Cs-1 34 5.OOE-01 2.50E+01

-7.OOE-01 2.60E+00 1.70E+01 2.soE+00 9.60E.OD 5.80E+01 9.40E+OD 6.70E+00 L Th'l TM TM 20 20 20 L9309-03 L9309-03 L9309-03 5/25/2005 5/25/2005 5/25/2005 Cs-1 37 Fe-59 1-131 1.60E+00 7.80E+00 1.OOE-01 1.90E+00 7.10E+00 1.40E-01 2.40E+01 5.90E-01 TMII 20 L9309-03 5/25/2005 1-131 6.50E+00 3.30E+00 I1.IOE+01 L TNIM TMI 20 20 L9309-03 L9309-03 5/25/2005 5/25/2005 K-40 La-140 1.44E+03 3.OOE-01 8.80E+01 4.30E+00 1.40E+02 I1.60E+01 TMI 20 L9309-03 5/25/2005 Mn-54 -1.40E+00 2.40E+00 8.90E+00 Thl 20 L9309-03 5/25/2005 Nb-95 2.50E+00 2.60E+00 8.90E+00 TMI 20 L9309-03 5/25/2005 Ru-1 03 O.OOE+00 2.20E+00 7.80E+00 TNI 20 L9309-03 5/25/2005 Ru-1 06 2.OOE+00 1.70E+01 6.20E+0l TMI 20 L9309-03 5/25/2005 Sb-1 24 -8.40E+00 6.OOE+00 2.60E401I TNI 20 L9309-03 5/25/2005 Sb-125 4.30E+00 s.40E+00 I1.90E+O1 TNI 20 L9309-03 5/25/2005 Se-75 -1.50E+00 2.20E+00 7.90E+CO TNI 20 L9309-03 5/25/2005 Zn-65 -6.60E+00 5.40E+00 2.10E+01 TNI 20 L9309-03 5/25/2005 Zr-95 4.90E+O0 4.1OE+O0 1.40E*01 TM 20 L9400-03 6/8/2005 AcTh-228 1.36E+01 8.90E+00 2.90E+0 1 TMI 20 L9400-03 6/8/2005 Ag-108m 3.60E+00 1.80E+00 5.80E+C0 TM, 20 L9400-03 6/8/2005 Ag-110m 4.60E+00 2.90E+00 9.60E+C-0 TMI 20 L9400-03 6/8/2005 Ba-140 -3.40E+00 3.40E+00 I1.50E+C'1 TNM 20 L9400-03 6/8/2005 Be-7 -6.OOE+00 1.60E+01 6.00E.C'1 TM 20 L9400-03 6/8/2005 Ce-141 -2.20E+00 3.OOE+00 1.1OE+C'1 TMI 20 L9400-03 6/8/2005 Ce-144 2.OOE+00 1.OOE+01 3.50E+C'I TMI 20 L9400-03 6/8/2005 Co-57 -5.OOE-01 1.30E+00 4.70E+C00 TMI 20 L9400-03 6/8/2005 Co-58 1.OOE+00 2.1 OE+00 7.60E+CIO TAI 20 L9400-03 6/8/2005 Co-60 2.80E+0O 2.40E+00 8.20E+CIO TMl 20 L9400-03 6/8/2005 Cr-51 -2.30E+01 2.10E+01 7.70E+(I1 Tl 20 L9400-03 6/8/2005 Cs-1 34 6.OOE-01 2.30E+00 8.20E+CIO TA1 20 L9400-03 6/8/2005 Cs-1 37 3.50E+00 2.10E+00 6.70E+CIO TM1 20 L9400-03 6/8/2005 Fe-59 1.00E-01 6.80E+0O 2.50E+(I1 TA1 20 L9400-03 6/8/2005 1-131 2.OOE-02 1.30E-01 7.60E-CII

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-194-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 I SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 20 L9400-03 6/8/2005 1-131 -1.50E+00 5.20E+00 1.90E+01

I I TM 20 L9400-03 6/8/2005 K-40 1.40E+03 8.30E+01 1.1OE+02 I TM 20 L9400-03 6/8/2005 La-140 -3.90E+00 3.90E+00 1.70E+01 6 TM 20 L9400-03 6/8/2005 Mn-54 1.40E+00 2.OOE+00 6.90E+00 TM 20 L9400-03 6/8/2005 Nb-95 5.OOE-01 2.30E+00 8.50E+00 TM 20 L9400-03 6/8/2005 Ru-1 03 -1.80E+00 2.30E+00 8.70E+00 Ii TM 20 L9400-03 6/8/2005 Ru-106 -1.30E+01 1.80E+01 6.90E+01 TM 20 L9400-03 6/8/2005 Sb-124 -3.60E+00 4.30E+00 1.90E+01 Sb-125 2.70E+00 4.80E+00 1.70E+01 TM TM 20 20 L9400-03 L9400-03 6/8/2005 6/8/2005 Se-75 -4.OOE-01 2.70E+00 9.40E+00

j TM 20 L9400-03 6/8/2005 Zn-65 -3.60E+00 4.80E+00 1.9OE+01 TM 20 L9400-03 6/8/2005 Zr-95 -2.30E+00 3.50E+00 1.30E+01 TM 20 L9474-03 6/22/2005 AcTh-228 1.1OE+OO 5.20E+00 1.80E+01 TM 20 L9474-03 6/22/2005 Ag-108m -7.60E-01 9.40E-01 3.30E+00 TM 20 L9474-03 6/22/2005 Ag-I1Om -1.00E+00 1.80E+00 6.20E+00 TM 20 L9474-03 6/22/2005 Ba-140 -1.50E+00 2.60E+00 9.60E+00 TM 20 L9474-03 6/22/2005 Be-7 -1.33E+01 9.90E+00 3.50E+01 TM 20 L9474-03 6/22/2005 Ce-141 -5.50E+00 2.70E+00 9.30E+00 TM 20 L9474-03 6/22/2005 Ce-144 3.80E+OO 5.50E+00 1.80E+01 TM 20 L9474-03 6/22/2005 Co-57 2.10E-01 7.1OE-01 2.40E+00 TM 20 L9474-03 6/22/2005 Co-58 5.OOE-01 1.30E+00 4.40E+00 I'

TM 20 L9474-03 6/22/2005 Co-60 -2.40E+00 1.50E+00 5.60E+00 TM 20 L9474-03 6/22/2005 Cr-51 -2.1OE+01 1.1OE+01 3.80E+01 4.20E+00 TM 20 L9474-03 6/22/2005 Cs-1 34 Cs-137 7.OOE-01 6.OOE-01 1.20E+00 1.30E+00 4.60E+00 L

TM 20 L9474-03 6/22/2005 TM 20 L9474-03 6/22/2005 Fe-59 4.40E+00 4.20E+00 1.40E+01 TM 20 L9474-03 6/22/2005 1-131 -1.38E-01 2.60E-02 8.50E-01 1-131 -1.OOE+OO 3.1OE+00 1.1OE+01 TM TM TM 20 20 20 L9474-03 L9474-03 L9474-03 6/22/2005 6/22/2005 6/22/2005 K-40 La-140 1.34E+03

-1.70E+00 4.60E+01 3.OOE+00 6.30E+01 1.10E+01 I

TM 20 L9474-03 6/22/2005 Mn-54 1.OOE+OO 1.20E+00 4.OOE+OO TM TM 20 20 L9474-03 L9474-03 6/22/2005 6/22/2005 Nb-95 Ru-103 1.00E-01

-7.OOE-01 1.30E+00 1.20E+00 4.60E+00 4.30E+00 3.90E+01 l

TM 20 L9474-03 6/22/2005 Ru-106 -I.OOE+01 1.1OE+01 TM 20 L9474-03 6/22/2005 Sb-124 5.1 OE+00 3.OOE+OO 9.60E+00 TM 20 L9474-03 6/22/2005 Sb-125 -3.50E+00 2.90E+00 1.OOE+01 TM 20 L9474-03 6/22/2005 Se-75 3.OOE+OO 1.20E+00 3.70E+00 TM 20 L9474-03 6/22/2005 Zn-65 5.OOE-01 3.1 OE+00 1.1OE+01 TM TM 20 20 L9474-03 L9528-03 6/22/2005 7/6/2005 Zr-95 AcTh-228 1.10E+00 2.50E+00 2.20E+00 8.80E+00 7.50E+00 3.1OE+01 L

TM 20 L9528-03 7/6/2005 Ag-108m O.OOE+OO 1.50E+00 5.30E+00 TM 20 L9528-03 7/6/2005 Ag-110m -3.1OE+OO 2.80E+00 1.1OE+01 TM 20 L9528-03 7/6/2005 Ba-140 -1.20E+00 2.90E+00 1.20E+01 TM 20 L9528-03 7/6/2005 Be-7 3.O0E+OO 1.40E+01 4.90E+01 TM 20 L9528-03 7/6/2005 Ce-141 2.90E+00 1.90E+00 6.40E+00 TM 20 L9528-03 7/6/2005 Ce-144 -3.80E+00 8.60E+00 3.OOE+01 TM 20 L9528-03 7/6/2005 Co-57 -5.OOE-01 1.10E+00 3.90E+00 TM 20 L9528-03 7/6/2005 Co-58 1.90E+00 1.80E+00 6.20E+00 TM 20 L9528-03 7/6/2005 Co-60 1.60E+00 2.60E+00 9.OOE+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-195-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC SAMF'LE L TYPE STATION LSN DATE 7/6/2005 NUCLIDE Cr-51 (nCi/L) s.

1.OOE+00 (pCi/L) 1.60E+01 (pCVL) 5.60E+OI TM 20 L9528-03 7.40E+01)

L TM TM TM 20 20 20 L9528-03 L9528-03 L9528-03 7/6/2005 7/6/2005 7/6/2005 Cs-1 34 Cs-137 Fe-59

-1.00E-01

-2.30E+00

-1.35E+01 2.00E+00 1.90E+00 7.1 0E+OO 7.20E+0) 2.80E+O I 7/6/2005 1-131 -6.50E-02 1.10E-02 6.70E-O I U TM TM TM 20 20 20 L9528-03 L9528-03 L9528-03 7/6/2005 7/6/2005 1-131 K-40 1.10E+OO 1.24E+03 3.30E+00 7.20E+01 1.10E+01 9.90E+O I

L TM 20 L9528-03 7/6/2005 La-140 -1.40E+00 3.30E+00 1.70E+00 1.30E+O I 6.70E+0')

TM 20 L9528-03 7/6/2005 Mn-54 -2.40E+00 TM 20 L9528-03 7/6/2005 Nb-95 2.1 OE+00 1.80E+00 6.00E+0')

TM 20 L9528-03 7/6/2005 Ru-103 -2.00E-01 1.90E+00 6.70E+01)

TM 20 L9528-03 7/6/2005 Ru-106 2.70E+01 1.70E+01 5.50E+O I TM 20 L9528-03 7/6/2005 Sb-124 -2.90E+00 4.50E+00 1.80E+O I TM 20 L9528-03 7/6/2005 Sb-125 1.18E+01 4.80E+00 1.50E+O0 r_

TM 20 L9528-03 7/6/2005 Se-75 1.30E+00 1.70E+00 5.80E+0o TM 20 L9528-03 7/6/2005 Zn-65 -3.60E+00 4.40E+00 1.70E+O0 TM 20 L9528-03 7/6/2005 Zr-95 4.60E+00 3.30E+00 1.10E+01 TM 20 L9624-03 7/20/2005 AcTh-228 -2.0OE+OO 4.60E+00 1.60E+01 TM 20 L9624-03 7/20/2005 Ag-108m 2.58E+00 9.80E-01 3.1OE+03 TM 20 L9624-03 7/20/2005 Ag-1I Om -4.OOE-01 1.60E+00 5.60E+0)

TM 20 L9624-03 7/20/2005 Ba-140 -8.00E-01 2.20E+00 7.90E+0O 7/20/2005 Be-7 -3.20E+00 8.80E+00 3.10E+01 L TM TM 20 20 L9624-03 L9624-03 7/20/2005 Ce-141 8.OOE-01 1.50E+00 5.20E+03 TM 20 L9624-03 7/20/2005 Ce-144 -2.60E+00 6.20E+00 2.10E+01 LI TM TM 20 20 L9624-03 L9624-03 7/20/2005 7/20/2005 Co-57 Co-58 5.60E-01

-2.00E+OO 8.1OE-01 1.20E+00 2.70E+O0 4.60E+0O TM 20 L9624-03 7/20/2005 Co-60 4.OOE-01 1.30E+00 4.60E+00 TM 20 L9624-03 7/20/2005 Cr-51 1.30E+01 1.20E+01 4.00E+01 TM 20 L9624-03 7/20/2005 Cs-134 O.OOE+00 1.20E+00 4.30E+00 TM 20 L9624-03 7/20/2005 Cs-137 1.50E+00 1.1OE+00 3.70E+OD TM 20 L9624-03 7/20/2005 Fe-59 -1.OOE-01 3.70E+00 1.30E+01 TM 20 L9624-03 7/20/2005 1-131 -6.1 OE-02 1.20E-02 7.40E-01 TM 20 L9624-03 7/20/2005 1-131 -4.10E+OO 3.00E+OO 1.10E+01 TM 20 L9624-03 7/20/2005 K-40 1.36E+03 4.50E+01 6.20E+01

TM 20 L9624-03 7/20/2005 La-140 -9.OOE-01 2.50E+00 9.10E+0O TM 20 L9624-03 7/20/2005 Mn-54 2.1OE+OO 1.20E+00 3.80E+00 TM 20 L9624-03 7/20/2005 Nb-95 -2.30E+00 1.50E+00 5.50E+00 TM 20 L9624-03 7/20/2005 Ru-1 03 -9.OOE-01 1.40E+00 5.002+00 TM 20 L9624-03 7/20/2005 Ru-106 3.OOE+OO 1.10E+01 3.80E+01 TM 20 L9624-03 7/20/2005 Sb-124 -3.20E+00 2.70E+00 1.OOE+01 TM 20 L9624-03 7/20/2005 Sb-125 1.30E+00 2.70E+00 9.40E+00 TM 20 L9624-03 7/20/2005 Se-75 -1.20E+00 1.40E+00 4.80E+00 TM 20 L9624-03 7/20/2005 Zn-65 1.1OE+OO 2.90E+00 1.OOE+01 TM 20 L9624-03 7/20/2005 Zr-95 O.OOE+OO 2.20E+00 7.60E+00 TM 20 L9702-03 8/3/2005 AcTh-228 -9.30E+00 4.30E+00 1.60E+01 Tiv 20 L9702-03 8/3/2005 Ag-108m -8.70E-01 8.60E-01 3.00E+00 TMv. 20 L9702-03 8/3/2005 Ag-11Om 2.40E+00 1.50E+00 4.80E+00 TM 20 L9702-03 8/3/2005 Ba-140 1.10E+00 1.80E+00 6.40E+00 Ttv 20 L9702-03 8/3/2005 Be-7 1.98E+01 9.30E+00 3.00E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-196-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCUL)

TM 20 L9702-03 8/3/2005 Ce-141 -2.1 OE+00 1.80E+00 6.30E+00 TM 20 L9702-03 8/3/2005 Ce-144 2.OOE-01 5.80E+00 2.OOE+01 TM 20 L9702-03 8/3/2005 Co-57 1.65E+00 7.40E-01 2.40E+00 i I TM 20 L9702-03 8/3/2005 Co-58 3.OOE-01 1.1 OE+00 3.70E+00 TM 20 L9702-03 8/3/2005 Co-60 3.OOE-01 1.40E+00 4.70E+00 TM 20 L9702-03 8/3/2005 Cr-51 4.OOE+00 1.1OE+01 3.60E+01 3.50E+00 ; 1 TM 20 L9702-03 8/3/2005 Cs-134 1.90E+00 1.1 OE+00 TM 20 L9702-03 8/3/2005 Cs-137 -1.1 OE+00 1.1 OE+00 4.10E+00 TM 20 L9702-03 8/3/2005 Fe-59 O.OOE+00 3.30E+00 1.20E+01 TM 20 L9702-03 8/3/2005 1-131 1.40E+00 2.70E+00 9.OOE+00 TM 20 L9702-03 8/3/2005 1-131 -1.OOE-02 1.1 OE-01 6.50E-01 TM 20 L9702-03 8/3/2005 K-40 1.46E+03 4.20E+01 5.10E+01 i TM 20 L9702-03 8/3/2005 La-140 1.30E+00 2.1OE+00 7.40E+00 TM 20 L9702-03 8/3/2005 Mn-54 O.OOE+00 1.OOE+00 3.60E+00 TM 20 L9702-03 8/3/2005 Nb-95 2.OOE-01 1.20E+00 4.30E+00 TM 20 L9702-03 8/3/2005 Ru-103 -1.50E+00 1.1OE+00 4.10E+00 TM 20 L9702-03 8/3/2005 Ru-106 -7.OOE+00 1.OOE+01 3.60E+01 TM 20 L9702-03 8/3/2005 Sb-124 1.10E+00 2.30E+00 8.OOE+00 TM 20 L9702-03 8/3/2005 Sb-125 -4.40E+00 2.80E+00 1.OOE+01 TM 20 L9702-03 8/3/2005 Se-75 1.30E+00 1.20E+00 4.1OE+00 TM 20 L9702-03 813/2005 Zn-65 1.OOE-01 2.70E+00 9.40E+00 6.40E+00 LI TM 20 L9702-03 8/3/2005 Zr-95 1.90E+00 1.90E+00 L9766-03 8/17/2005 AcTh-228 8.20E+00 7.OOE+00 2.30E+01 TM TM TM 20 20 20 L9766-03 L9766-03 8/17/2005 8/17/2005 Ag-1 08m Ag-11 Om 7.OOE-01 1.20E+00 1.10E+00 2.30E+00 3.90E+00 7.90E+00 L

TM 20 L9766-03 8/17/2005 Ba-140 -2.20E+00 3.50E+00 1.30E+01 TM TM 20 20 L9766-03 L9766-03 8/17/2005 8/17/2005 Be-7 Ce-141 2.OOE+00

-5.OOE-01

-6.1 OE+00 1.20E+01 2.1 OE+00 7.OOE+00 4.OOE+01 7.20E+00 2.40E+01 L

TM 20 L9766-03 8/17/2005 Ce-144 TM TM TM 20 20 20 L9766-03 L9766-03 L9766-03 8/17/2005 8/17/2005 8/17/2005 Co-57 Co-58 Co-60 7.90E-01 4.OOE-01 2.30E+00 9.20E-01 1.60E+00 2.1 OE+00 3.10E+00 5.70E+00 6.90E+00 L

1.50E+01 1.30E+01 4.40E+01 TM TM TM 20 20 20 L9766-03 L9766-03 L9766-03 8/17/2005 8/17/2005 8/17/2005 Cr-51 Cs-134 Cs-137

-1.40E+00 1.50E+00 1.60E+00 1.60E+00 6.OOE+00 5.50E+00 U

TM 20 L9766-03 8/17/2005 Fe-59 3.40E+00 5.30E+00 1.80E+01 TM 20 L9766-03 8/17/2005 1-131 -2.OOE-01 3.20E-02 8.50E-01 TM 20 L9766-03 8/17/2005 1-131 -2.1 OE+00 3.80E+00 1.30E+01 TM 20 L9766-03 8/17/2005 K-40 1.21 E+03 5.70E+01 8.90E+01 U TM 20 L9766-03 8/17/2005 La-140 -2.50E+O0 4.OOE+00 1.50E+01 TM 20 L9766-03 8/17/2005 Mn-54 -2.OOE-01 1.50E+00 5.40E+00 TM TM 20 20 L9766-03 L9766-03 8/17/2005 8/17/2005 Nb-95 Ru-103 6.OOE-01 1.20E+00 1.70E+00 1.50E+00 5.90E+00 5.1 OE+00 LI TM 20 L9766-03 8/17/2005 Ru-1 06 2.1 OE+01 1.40E+01 4.70E+01 TM 20 L9766-03 8/17/2005 Sb-124 8.OOE+00 3.70E+00 1.20E+01 TM 20 L9766-03 8/17/2005 Sb-125 3.1 OE+00 3.50E+00 1.20E+01 TM 20 L9766-03 8/17/2005 Se-75 2.20E+00 1.40E+00 4.60E+00 TM 20 L9766-03 8/17/2005 Zn-65 O.OOE+00 3.80E+00 1.40E+01 TM 20 L9766-03 8/17/2005 Zr-95 -1.50E+00 2.80E+00 1.OOE+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-197-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC SAMPLE L TYPE STATION LSN DATE NUCLIDE (pCiIL) (pCi/L) 5.60E+00 (pCi/L) 2.10E+01 TM 20 L9880-03 9/14/2005 AcTh-228 -4.50E+00 L TM TM TM 20 20 20 L9880-03 L9880-03 L9880-03 9/1412005 9/14/2005 9/14/2005 Ag-1 08m Ag-110m Ba-140

-3.00E-01

-4.90E+00

-1.60E+00 1.10E+00 1.90E+00 2.40E+00 4.00E+0O 7.60E+0()

9.50E+0) 20 L9880-03 9/14/2005 Be-7 2.70E+01 1.20E+01 3.90E+OI L TM TM TM 20 20 L9880-03 L9880-03 9/14/2005 9/14/2005 Ce-141 Ce-144

-8.70E+00

-8.80E+00 3.80E+00 7.70E+00 1.40E+0I 2.70E+OI TM 20 L9880-03 9/14/2005 Co-57 -7.00E-01 1.OOE+00 3.60E+0)

. TM TM 20 20 L9880-03 L9880-03 9/14/2005 9/14/2005 Co-58 Co-60

-1.30E+00 6.OOE-01 1.60E+00 1.70E+00 5.80E+0O) 5.80E+00 TM 20 L9880-03 9/14/2005 Cr-51 -9.OOE+00 1.50E+01 5.10E+01 U TM TM TM 20 20 20 L9880-03 L9880-03 L9880-03 9/14/2005 9/14/2005 9/14/2005 Cs-134 Cs-1 37 Fe-59 7.OOE-01 2.00E-01

-6.50E+00 1.60E+00 1.40E+00 4.60E+00 5.50E+0O 5.10E+0O 1.80E+OI O.OOE+00 3.80E+00 1.30E+OI U TM TM TM 20 20 20 L9880-03 L9880-03 L9880-03 9114/2005 9/14/2005 9/14/2005 1-131 1-131 K-40

-5.20E-02 1.37E+03 1.00E-02 5.50E+01 4.00E-0I 7.50E+O

TM 20 L9880-03 9/14/2005 La-140 -1.90E+00 2.80E+00 1.10E+01 L TM TM 20 20 L9880-03 L9880-03 9/14/2005 9/14/2005 Mn-54 Nb-95

-1.80E+00 5.OOE-01 1.40E+00 1.80E+00 5.10E+0')

6.1 OE+O)

TM 20 L9880-03 9/14/2005 Ru-103 -4.30E+00 1.70E+00 6.50E+O)

U TM TM 20 20 L9880-03 L9880-03 L9880-03 9/14/2005 9/14/2005 9/14/2005 Ru-106 Sb-124 Sb-125 2.20E+01 3.70E+00

-2.70E+00 1.20E+01 3.50E+00 3.50E+00 4.10E+01 1.20E+01 1.30E+01 TM 20 LI TM TM TM 20 20 20 L9880-03 L9880-03 L9880-03 9/14/2005 9/14/2005 9/14/2005 Se-75 Zn-65 Zr-95

-7.OOE-01

-4.90E+00 3.30E+00 1.80E+00 3.60E+00 2.70E+00 6.10E+0) 1.30E+01 9.20E+O0 Tv 20 L9963-03 9/28/2005 AcTh-228 8.60E+00 7.40E+00 2.50E+01 Tv 20 L9963-03 9/28/2005 Ag-108m -5.00E-01 1.40E+00 5.10E+00 Tv 20 L9963-03 9/28/2005 Ag-11O -2.50E+00 2.80E+00 1.00E+01 Tv 20 L9963-03 9/28/2005 Ba-140 -4.OOE+00 3.40E+00 1.40E+01 Tl 20 L9963-03 9/28/2005 Be-7 1.1OE+01 1.40E+01 4.70E+01 Tlv 20 L9963-03 9/28/2005 Ce-141 -2.70E+00 2.50E+00 8.80E+00 TV 20 L9963-03 9/2812005 Ce-144 -1 .80E+01 8.30E+00 3.OOE+01 TM, 20 L9963-03 9/28/2005 Co-57 9.OOE-01 1.10E+00 3.60E+00 Tlv 20 L9963-03 9/2812005 Co-58 -1.OOE+00 2.00E+00 7.30E+00 Tlv; 20 L9963-03 9/28/2005 Co-60 -3.80E+00 2.70E+00 1.00E+01 TM 20 L9963-03 9/28/2005 Cr-51 -3.OOE+01 1.50E+01 5.70E+01 TM 20 L9963-03 9/28/2005 Cs-134 1.00E+00 2.00E+00 7.10E+00 TMl 20 L9963-03 9/28/2005 Cs-1 37 1.30E+00 1.90E+00 6.50E+00 TMI 20 L9963-03 9/28/2005 Fe-59 -1.70E+00 4.90E+00 1.80E+C 1 TMI 20 L9963-03 9/28/2005 1-131 O.OOE+00 1.1OE-01 6.70E-Cl1 TMI 20 L9963-03 9/28/2005 1-131 3.50E+00 4.20E+00 1.40E+01 TNI 20 L9963-03 9/28/2005 K-40 1.46E+03 7.30E+01 8.70E+01

TM 20 L9963-03 9/28/2005 La-140 -4.60E+00 3.90E+00 1.60E+01 TM 20 L9963-03 9/28/2005 Mn-54 -2.20E+00 1.70E+00 6.60E+00 TIV 20 L9963-03 9/28/2005 Nb-95 1.80E+00 2.00E+00 6.80E+C00 TM 20 L9963-03 9/28/2005 Ru-103 2.OOE+00 2.00E+00 6.60E+CO TM 20 L9963-03 9/28/2005 Ru-106 7.00E+00 1.60E+01 5.70E+C I

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-198-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 L SAMPLE TYPE STATION LSN END DATE NUCLIDE CONC (pCi/L)

STD.DEV.

(pCi/L)

MDC (pCi/L) L TM 20 L9963-03 9/28/2005 Sb-124 9.OOE-01 5.IOE+00 1.90E+01 TM 20 L9963-03 9/28/2005 Sb-125 -1.60E+00 4.50E+00 1.60E+01 TM 20 L9963-03 9/28/2005 Se-75 1.OOE+00 1.80E+00 6.OOE+00 TM 20 L9963-03 9/28/2005 Zn-65 -4.40E+00 4.20E+00 1.60E+01 TM 20 L9963-03 9/28/2005 Zr-95 4.60E+00 3.40E+00 1.10E+01 TM 20 L10021-0310/12/2005 AcTh-228 -2.40E+00 7.30E+00 2.70E+01 TM 20 L10021-0310/12/2005 Ag-108m 2.10E+00 1.60E+00 5.30E+00 TM 20 L10021-0310/12/2005 Ag-1I Om -6.OOE-01 2.60E+00 9.50E+00 TM 20 L10021-0310/12/2005 Ba-140 1.90E+00 2.50E+00 9.OOE+00 J TM 20 L10021-0310/12/2005 Be-7 3.OOE+00 1.80E+01 6.30E+01 TM 20 L10021-0310/12/2005 Ce-141 -3.OOE-01 3.OOE+00 1.OOE+01 TM 20 L10021-0310/12/2005 Ce-144 9.OOE+00 1.OOE+01 3.40E+01 TM 20 L10021-0310/12/2005 Co-57 7.OOE-01 1.30E+00 4.60E+00 TM 20 L10021-0310/12/2005 Co-58 -3.80E+00 2.OOE+00 7.70E+00 TM 20 L10021-0310/12/2005 Co-60 -1.70E+00 2.60E+00 9.40E+00 TM 20 L10021-0310/12/2005 Cr-51 -2.80E+01 1.70E+01 6.30E+01 TM 20 L10021-0310/12/2005 Cs-134 -3.60E+00 2.10E+00 8.20E+00 TM 20 L10021-0310/12/2005 Cs-137 6.OOE-01 1.90E+00 6.60E+00 TM 20 L10021-0310/12/2005 Fe-59 3.50E+00 4.30E+00 1.50E+01 J TM 20 L10021-0310/12/2005 1-131 8.OOE-02 1.IOE-01 4.30E-01 TM 20 L10021-0310/12/2005 1-131 3.OOE-01 3.70E+00 1.30E+01 TM 20 L10021-0310/12/2005 K-40 1.33E+03 6.80E+01 9.OOE+01

TM 20 L10021-0310/12/2005 La-140 2.20E+00 2.90E+00 1.OOE+01 TM 20 L10021-0310/12/2005 Mn-54 -2.60E+00 2.OOE+00 7.70E+00 TM 20 L10021-0310/12/2005 Nb-95 1.60E+00 2.30E+00 7.80E+00 TM 20 L10021-0310/12/2005 Ru-103 1.50E+00 2.40E+00 8.20E+00 TM 20 L10021-0310/12/2005 Ru-106 1.60E+01 1.80E+01 6.10E+01 TM TM TM 20 20 20 L10021-0310/12/2005 L10021-0310/12/2005 L10021-0310/12/2005 Sb-124 Sb-125 Se-75 1.60E+00

-5.90E+00 2.1OE+00 4.OOE+00 4.60E+00 2.30E+00 1.50E+01 1.70E+01 7.70E+00 L

TM 20 L10021-0310/12/2005 Zn-65 -6.10E+00 8.60E+00 3.OOE+01 TM 20 L10021-0310/12/2005 Zr-95 3.90E+00 3.50E+00 1.20E+01 l TM 20 L10167-03 11/9/2005 AcTh-228 7.80E+00 4.90E+00 2.OOE+01 TM 20 L10167-03 11/9/2005 Ag-108m 2.02E+00 8.80E-01 2.90E+00 TM TM 20 20 20 L10167-03 11/9/2005 L10167-03 11/9/2005 L10167-03 11/9/2005 Ag-110m Ba-140 Be-7 6.OOE-01 1.90E+00

-2.37E+01 1.60E+00 1.90E+00 8.70E+00 5.40E+00 6.40E+00 3.20E+01 Li TM TM 20 L10167-03 11/9/2005 Ce-141 2.40E+00 1.50E+00 5.OOE+00 TM 20 L10167-03 11/9/2005 Ce-144 5.30E+00 5.30E+00 1.70E+01 L TM 20 L10167-03 11/9/2005 Co-57 -3.70E-01 6.60E-01 2.30E+00 TM TM TM 20 20 20 L10167-03 11/9/2005 L10167-03 11/9/2005 L10167-03 11/9/2005 Co-58 Co-60 Cr-51

-1.80E+00 5.OOE-01

-8.70E+00 1.20E+00 1.40E+00 9.OOE+00 4.30E+00 4.90E+00 3.10E+01 L

TM 20 L10167-03 11/9/2005 Cs-134 3.OOE-01 1.40E+00 4.70E+00 TM 20 L10167-03 11/9/2005 Cs-137 2.1OE+00 1.OOE+00 3.30E+00 TM 20 L10167-03 11/9/2005 Fe-59 -2.OOE+00 2.80E+00 1.OOE+01 TM 20 L10167-03 11/9/2005 1-131 -4.50E+00 2.30E+00 8.40E+00 TM 20 L10167-03 11/9/2005 1-131 1.20E-01 1.90E-01 8.30E-01 TM 20 L10167-03 11/9/2005 K-40 1.33E+03 4.40E+01 7.80E+01 *

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-199-

LJ Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC L SAMPLE TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 20 L10167-03 11/9/2005 La-140 2.20E+00 2.20E+00 7.40E+0()

TM 20 L10167-03 1119/2005 Mn-54 -9.OOE-01 1.10E+00 4.00E+0O TM 20 L10167-03 11/9/2005 Nb-95 -1.80E+00 1.30E+00 4.80E+0O)

TM 20 L10167-03 11/9/2005 Ru-103 O.OOE+00 1.20E+00 4.10E+0()

TM 20 L10167-03 11/9/2005 Ru-106 6.50E+00 8.90E+00 3.OOE+OI b TM 20 L10167-03 11/9/2005 Sb-124 -6.00E-01 2.70E+00 9.90E+0I)

TM 20 L10167-03 11/9/2005 Sb-125 -1.00E+00 2.70E+00 9.40E+0I)

TM 20 L10167-03 11/9/2005 Se-75 1.10E+00 1.10E+00 3.70E+01)

TM 20 L10167-03 11/9/2005 Zn-65 -5.00E-01 2.90E+00 1.OOE+OI TM 20 L10167-03 11/9/2005 Zr-95 1.90E+00 2.10E+00 7.00E+0O TM 20 L10268-03 12/7/2005 AcTh-228 6.70E+00 7.10E+00 2.40E+OI i TM 20 L10268-03 1217/2005 Ag-108m 9.OOE-01 1.50E+00 5.1OE+0O TM 20 L10268-03 12(7/2005 Ag-110m -3.20E+00 2.70E+00 1.OOE+Oi TM 20 L10268-03 1217/2005 Ba-140 -1.10E+00 3.50E+00 1.30E+OI Be-7 -2.40E+01 1.60E+01 5.90E+Ol U TM TM TM 20 20 20 L10268-03 L10268-03 L10268-03 1217/2005 12/7/2005 12/7/2005 Ce-141 Ce-144

-2.40E+00 6.OOE+00 5.40E+00 1.10E+01 1.80E+Ol 3.70E+Ol 20 L10268-03 12/7/2005 Co-57 3.OOE-01 1.30E+00 4.60E+OO)

U TM TM Ti 20 20 L10268-03 L10268-03 12/7/2005 12/7/2005 Co-58 Co-60

-1.40E+00

-8.OOE-01 1.90E+00 1.90E+00 7.20E+O) 7.OOE+O)

TM 20 L10268-03 12/7/2005 Cr-51 2.OOE+00 1.90E+01 6.70E+01 TN 20 L10268-03 12/7/2005 Cs-134 1.90E+00 2.OOE+00 6.90E+OD Ti 20 L10268-03 1217/2005 Cs-137 -9.OOE-01 1.90E+00 6.90E+0O Tl 20 L10268-03 12/7/2005 Fe-59 -3.1OE+00 4.70E+00 1.70E+01 TV 20 L10268-03 1217/2005 1-131 4.00E-01 5.20E+00 1.80E+01 TN 20 L10268-03 12/7/2005 1-131 -1.72E-01 3.40E-02 9.90E-01 TiV 20 L10268-03 12/7/2005 K-40 1.20E+03 6.OOE+01 8.30E+01 TIV: 20 L10268-03 12/7/2005 La-140 -1.30E+00 4.OOE+00 1.50E+01 TVI 20 L10268-03 12(7/2005 Mn-54 1.50E+00 1.70E+00 5.90E+00 TMI 20 L10268-03 12(7/2005 Nb-95 6.50E+00 3.80E+00 1.20E+01 TNI 20 L10268-03 12/7/2005 Ru-103 9.OOE-01 2.20E+00 7.70E+00 TMI 20 L10268-03 12/7/2005 Ru-106 1.OOE+01 1.70E+01 5.90E+01 TM 20 L10268-03 12/7/2005 Sb-124 2.20E+00 4.30E+00 1.60E+01 TM 20 L10268-03 12(7/2005 Sb-125 3.40E+00 4.90E+00 1.70E+01 TiV 20 L10268-03 1217/2005 Se-75 2.10E+00 2.50E+00 8.30E+00 TMl 20 L10268-03 12/7/2005 Zn-65 -4.10E+00 9.30E+00 3.20E+01 TMI 20 L10268-03 12(7/2005 Zr-95 7.OOE-01 3.80E+00 1.30E+C11 TMI 23 L8729-04 1/19/2005 AcTh-228 -1.70E+00 7.20E+00 2.80E+C'1 TMv 23 L8729-04 1/19/2005 Ag-108m O.OOE+00 1.50E+00 5.50E+CO TNM 23 L8729-04 1/19/2005 Ag-110m 7.OOE-01 2.40E+00 9.IOE+CO ITM 23 L8729-04 1/19/2005 Ba-140 2.70E+00 2.70E+00 9.60E+O0 TMI 23 L8729-04 1/19/2005 Be-7 5.OOE+00 1.40E+01 5.OOE+C1 TM 23 L8729-04 1/19/2005 Ce-141 3.OOE-01 2.70E+00 9.50E+C'O TM 23 L8729-04 1/19/2005 Ce-144 -1.60E+00 9.OOE+00 3.30E+C1 TMi 23 L8729-04 1/19/2005 Co-57 -6.00E-01 1.10E+00 3.90E+COO TMI 23 L8729-04 1/19/2005 Co-58 2.50E+00 2.10E+00 7.20E+COO TMI 23 L8729-04 1/19/2005 Co-60 -1.70E+00 2.30E+00 9.70E+C'O TMI 23 L8729-04 1/19/2005 Cr-51 2.OOE+00 1.60E+01 5.70E+C'1 TMl 23 L8729-04 1/19/2005 Cs-134 2.50E+00 1.90E+00 6.50E+C'0

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-200-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 1 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 23 L8729-04 1/19/2005 Cs-137 7.00E-01 1.80E+00 6.70E+00 TM 23 L8729-04 1/19/2005 Fe-59 2.90E+00 6.00E+00 2.20E+01 TM 23 L8729-04 1/19/2005 1-131 -1.30E-01 1.70E-01 7.20E-01 TM 23 L8729-04 1/19/2005 1-131 -3.30E+00 2.90E+00 1.20E+01 TM 23 L8729-04 1/19/2005 K-40 1.38E+03 9.1OE+01 1.OOE+02 i I TM 23 L8729-04 1/19/2005 La-I 40 3.10E+00 3.10E+00 1.1OE+01 L TM 23 L8729-04 1/19/2005 Mn-54 5.OOE-01 1.90E+00 7.20E+00 TM 23 L8729-04 1/19/2005 Nb-95 -2.20E+00 2.20E+00 9.00E+00 TM TM 23 23 L8729-04 L8729-04 1/19/2005 Ru-103 1/19/2005 Ru-106

-1.30E+00

-3.OOE+OO 1.90E+00 1.70E+01 7.40E+00 6.40E+01 1.

TM 23 L8729-04 1/19/2005 Sb-124 1.50E+00 3.30E+00 1.40E+01 TM 23 L8729-04 1/19/2005 Sb-125 1.50E+00 4.40E+00 1.60E+01 TM 23 L8729-04 1/19/2005 Se-75 3.20E+00 2.30E+00 7.70E+00 TM 23 L8729-04 1/19/2005 Zn-65 O.OOE+OO 4.60E+00 1.80E+01 TM 23 L8729-04 1/19/2005 Zr-95 -3.70E+00 3.80E+00 1.50E+01 TM 23 L8865-04 2116/2005 AcTh-228 -6.70E+00 6.1OE+O0 2.40E+01 TM 23 L8865-04 2/16/2005 Ag-108m 1.OOE-01 1.30E+00 4.70E+00 TM 23 L8865-04 2/16/2005 Ag-11Om 2.40E+00 2.50E+00 8.60E+00 TM 23 L8865-04 2/16/2005 Ba-140 -1.60E+00 3.00E+00 1.30E+01 TM 23 L8865-04 2/16/2005 Be-7 -1.50E+01 1.30E+01 5.00E+01 TM 23 L8865-04 2/16/2005 Ce-141 -3.10E+00 2.90E+00 1.OOE+01 TM 23 L8865-04 2/16/2005 Ce-144 -1.78E+01 9.20E+00 3.40E+01 TM 23 L8865-04 2/16/2005 Co-57 -1.80E+00 1.20E+00 4.50E+00 TM 23 L8865-04 2/16/2005 Co-58 1.60E+00 1.80E+OO 6.30E+00 TM TM TM 23 23 23 L8865-04 L8865-04 L8865-04 2116/2005 Co-60 2/16/2005 Cr-51 2/16/2005 Cs-134 5.OOE-01 1.0OE+01

-6.OOE-01 1.90E+00 1.50E+01 1.80E+00 7.00E+00 5.10E+01 6.80E+00 Li TM 23 L8865-04 2/16/2005 Cs-137 1.60E+00 1.60E+00 5.40E+00 TM 23 L8865-04 2/16/2005 Fe-59 -1.05E+01 6.00E+OO 2.50E+01 TM 23 L8865-04 2/1612005 1-131 -1.40E-01 7.1OE-02 5.50E-01 TM 23 L8865-04 2/16/2005 1-131 2.OOE-01 4.40E+00 1.60E+01 TM 23 L8865-04 2/1612005 K-40 1.41 E+03 7.30E+01 8.40E+01 TM 23 L8865-04 2/16/2005 La-140 -1.80E+00 3.50E+00 1.50E+01 TM 23 L8865-04 2/16/2005 Mn-54 5.00E-01 1.60E+00 5.90E+00 TM TM TM 23 23 23 L8865-04 L8865-04 L8865-04 2/16/2005 Nb-95 2/16/2005 Ru-1 03 2116/2005 Ru-1 06 3.80E+00 1.70E+00

-4.00E+OO 2.00E+00 1.70E+00 1.40E+01 6.50E+00 5.70E+00 5.00E+01 Li TM 23 L8865-04 2/16/2005 Sb-124 I.OOE+OO 4.10E+00 1.60E+01 TM 23 L8865-04 2/16/2005 Sb-125 -8.1OE+OO 3.90E+00 1.60E+01 TM 23 L8865-04 2/16/2005 Se-75 7.OOE-01 1.80E+00 6.30E+00 TM 23 L8865-04 2/16/2005 Zn-65 -1.20E+00 4.60E+00 1.70E+01 3.00E+00 1.10E+01 TM TM 23 23 L8865-04 L8980-04 2/16/2005 Zr-95 3/16/2005 AcTh-228 1.OOE+OO

-7.OOE-01 4.10E+00 1.50E+01 L TM 23 L8980-04 3/16/2005 Ag-108m O.OOE+O0 9.80E-01 3.50E+00 TM 23 L8980-04 3/16/2005 Ag-110m O.OOE+O0 1.70E+00 6.1OE+00 TM 23 L8980-04 3/1612005 Ba-140 6.00E-01 1.30E+00 4.70E+00 TM 23 L8980-04 3/1612005 Be-7 7.80E+00 8.90E+00 3.10E+01 TM 23 L8980-04 3/16/2005 Ce-141 -5.20E+00 2.1OE+00 7.70E+00 TM 23 L8980-04 3116/2005 Ce-144 -8.50E+00 7.40E+00 2.60E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-201-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC L SAMFLE TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCilL)

TM 23 L8980-04 3/16/2005 Co-57 -6.30E-01 9.80E-01 3.40E+00 TM 23 L8980-04 3/16/2005 Co-58 2.30E+00 1.20E+00 3.90E+00 L TM TM 23 23 L8980-04 L8980-04 3/16/2005 3/16/2005 Co-60 Cr-51 1.50E+00

-4.OOE+00 1.40E+00 1.10E+01 4.80E+0(1 3.80E+01 TM 23 L8980-04 3/16/2005 Cs-1 34 -1.80E+00 1.20E+00 4.80E+00 L TM TM 23 23 L8980-04 L8980-04 3/16/2005 3/16/2005 Cs-137 Fe-59 9.OOE-01

-8.OOE-01 1.20E+00 3.60E+00 4.10E+00 1.30E+0-1 TM 23 L8980-04 3/16/2005 1-131 1.70E+00 2.10E+00 7.20E+0()

L TM TM 23 23 L8980-04 L8980-04 3/1612005 3/16/2005 1-131 K-40 5.10E-01 1.32E+03 2.60E-01 5.20E+01 6.1OE-01 5.60E+0-1 TM 23 L8980-04 3/16/2005 La-140 7.OOE-01 1.40E+00 5.40E+00 L TM 23 L8980-04 3/16/2005 3/16/2005 Mn-54 Nb-95 5.OOE-01 2.OOE-01 1.1 OE+00 1.30E+00 3.80E+00 4.50E+00 TM 23 L8980-04 TM 23 L8980-04 3/16/2005 Ru-103 -1.90E+00 1.30E+00 5.OOE+00 TM 23 L8980-04 3/16/2005 Ru-1 06 7.20E+00 9.90E+00 3.40E+01 b TM 23 L8980-04 3/16/2005 Sb-124 -3.40E+00 2.10E+00 9.40E+01)

TM 23 L8980-04 3/16/2005 Sb-125 1.50E+00 3.OOE+00 1.OOE+0l TM 23 L8980-04 3/16/2005 Se-75 3.1OE+00 1.50E+00 4.90E+01)

L TM TM 23 23 L8980-04 L8980-04 3/1612005 3/16/2005 Zn-65 Zr-95

-3.OOE-01 2.70E+00 3.20E+00 2.OOE+00 1.IOE+0l 6.70E+01) 23 L9123-04 4/13/2005 AcTh-228 8.60E+00 6.90E+00 2.30E+0 I L TM TM TM 23 23 L9123-04 L9123-04 4/13/2005 4/13/2005 Ag-108m Ag-110m

-2.OOE-01

-6.OOE-01 1.30E+00 2.40E+00 4.60E+01) 9.1OE+00 TM 23 L9123-04 4/13/2005 Ba-140 -7.OOE-01 2.60E+00 1.1 OE+0 I L9123-04 4/13/2005 Be-7 2.OOE+00 1.20E+01 4.50E+01 L TM TM TM 23 23 23 L9123-04 4/13/2005 Ce-141 L9123-04 4/13/2005 Ce-144

-1.90E+00

-1.30E+00 2.40E+00 9.20E+00 8.60E+00 3.20E+0l)

TM 23 L9123-04 4/13/2005 Co-57 -5.OOE-01 1.10E+00 4.1OE+01)

L TM TM 23 23 L9123-04 L9123-04 4/13/2005 4/13/2005 Co-58 Co-60

-4.1OE+00 1.60E+00 2.10E+00 1.90E+00 8.60E+0')

6.90E+00)

TM 23 L9123-04 4/13/2005 Cr-51 -2.OOE+01 1.20E+01 4.60E+01 I TM 23 L9123-04 4/13/2005 Cs-134 6.OOE-01 1.70E+00 6.40E+03 TM 23 L9123-04 4/13/2005 Cs-137 8.OOE-01 1.50E+00 5.40E+00 TM 23 L9123-04 4/13/2005 Fe-59 0.OOE+00 5.20E+00 2.OOE+O1 TM 23 L9123-04 4/13/2005 1-131 1.80E-01 1.30E-01 4.40E-01 TM 23 L9123-04 4/13/2005 1-131 -8.OOE+00 2.60E+00 1.10E+01 TM 23 L9123-04 4/13/2005 K-40 1.19E+03 7.30E+01 8.90E+01 TM 23 L9123-04 4/13/2005 La-140 -8.OOE-01 3.00E+00 1.20E+01 TM 23 L9123-04 4/13/2005 Mn-54 2.1OE+00 1.80E+00 6.30E+00 Tt/ 23 L9123-04 4/13/2005 Nb-95 O.OOE+00 1.70E+00 6.40E+00 TIV 23 L9123-04 4/13/2005 Ru-103 1.60E+00 1.70E+00 6.OOE+00 TIV 23 L9123-04 4/13/2005 Ru-106 -2.60E+01 1.40E+01 5.70E+01 TV 23 L9123-04 4/13/2005 Sb-124 5.50E+00 3.30E+00 1.OOE+01 TV. 23 L9123-04 4/13/2005 Sb-125 -3.20E+00 4.OOE+00 1.50E+01 TM 23 L9123-04 4/13/2005 Se-75 -2.30E+00 1.80E+00 6.90E+00 i TN! 23 L9123-04 4/13/2005 Zn-65 -8.30E+00 5.1OE+00 2.OOE+01 TIVI 23 L9123-04 4/13/2005 Zr-95 7.OOE-01 3.20E+00 1.20E+01 TMI 23 L9209-04 4/27/2005 AcTh-228 -1.01E+01 6.10E+00 2.60E+01 TM 23 L9209-04 4/27/2005 Ag-108m -7.00E-01 1.30E+00 4.90E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-202-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 J SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 23 L9209-04 4/27/2005 Ag-11Om 3.1 OE+00 2.1OE+00 6.90E+00 TM 23 L9209-04 4/27/2005 Ba-140 -3.30E+00 2.40E+00 1.20E+01 TM 23 L9209-04 4/27/2005 Be-7 -1.OOE+01 1.30E+01 5.20E+01 TM 23 L9209-04 4/27/2005 Ce-141 -3.00E-01 2.80E+00 9.70E+00 TM 23 L9209-04 4/27/2005 Ce-144 1.00E+00 8.30E+00 2.90E+01 TM TM 23 23 L9209-04 L9209-04 4/2712005 4/27/2005 Co-57 Co-58 1.1OE+00

-2.30E+00 1.10E+00 1.70E+00 3.60E+00 7.10E+00 L

TM 23 L9209-04 4/27/2005 Co-60 -1.80E+00 2.OOE+00 8.30E+00 TM TM 23 23 L9209-04 L9209-04 4/27/2005 4/27/2005 Cr-51 Cs-1 34

-5.00E+00 3.10E+00 1.40E+01 1.70E+00 1.60E+00 5.20E+01 5.20E+00 6.10E+00 I

TM 23 L9209-04 4/27/2005 Cs-137 -3.00E-01 TM 23 L9209-04 4/27/2005 Fe-59 2.60E+00 6.40E+00 2.30E+01 TM 23 L9209-04 4/27/2005 1-131 -1.30E-01 1.70E-01 9.80E-01 TM 23 L9209-04 4/27/2005 1-131 -2.OOE-01 3.90E+00 1.40E+01 TM TM 23 23 L9209-04 L9209-04 4/27/2005 4/27/2005 K-40 La-140 1.22E+03

-3.80E+00 7.40E+01 2.70E+00 7.80E+01 1.40E+01 I

TM 23 L9209-04 4/27/2005 Mn-54 -1.30E+00 2.00E+00 7.60E+00 TM 23 L9209-04 4/27/2005 Nb-95 1.80E+00 2.20E+00 7.80E+00 TM 23 L9209-04 4/27/2005 Ru-103 -1.80E+00 1.40E+00 5.80E+00 Li TM 23 L9209-04 4/27/2005 Ru-106 O.OOE+00 1.60E+01 5.70E+01 TM 23 L9209-04 4/27/2005 Sb-124 -4.70E+00 3.70E+00 1.70E+01 TM TM TM 23 23 23 L9209-04 L9209-04 L9209-04 4/27/2005 4/27/2005 4/27/2005 Sb-1 25 Se-75 Zn-65 3.90E+00 3.20E+00

-6.50E+00 4.30E+00 1.80E+00 5.20E+00 1.50E+01 5.80E+00 2.1OE+01 L

1.10E+01 TM TM TM 23 23 23 L9209-04 L9263-04 L9263-04 4/27/2005 5/11/2005 5/11/2005 Zr-95 AcTh-228 Ag-108m

-1.10E+00

-7.00E-01

-1.60E+00 2.90E+00 6.OOE+00 1.30E+00 2.20E+01 4.90E+00 L

TM 23 L9263-04 5/1112005 Ag-110m 1.10E+00 2.60E+00 9.10E+00 TM TM 23 23 L9263-04 L9263-04 5/11/2005 5/11/2005 Ba-140 Be-7 1.40E+00 3.00E+00 2.50E+00 1.30E+01 9.10E+00 4.70E+01 I

TM 23 L9263-04 5/11/2005 Ce-141 -6.00E-01 2.50E+00 8.70E+00 TM 23 L9263-04 5/11/2005 Ce-144 2.60E+00 9.40E+00 3.20E+01 TM 23 L9263-04 5/11/2005 Co-57 2.90E+00 1.20E+00 3.70E+00 TM 23 L9263-04 5/11/2005 Co-58 -5.00E+00 1.80E+00 7.20E+00 TM 23 L9263-04 5/11/2005 Co-60 6.00E-01 1.80E+00 6.70E+00 TM 23 L9263-04 5/11/2005 Cr-51 1.70E+01 1.50E+01 5.10E+01 TM 23 L9263-04 5/11/2005 Cs-134 O.OOE+00 2.1OE+00 7.50E+00 TM 23 L9263-04 5/11/2005 Cs-137 -1.90E+00 1.70E+00 6.50E+00 TM 23 L9263-04 5/11/2005 Fe-59 1.90E+00 5.00E+00 1.80E+01 TM 23 L9263-04 5/11/2005 1-131 O.OOE+00 3.OOE+00 1.1OE+01 TM 23 L9263-04 5/11/2005 1-131 1.50E-01 2.00E-01 8.10E-01 TM 23 L9263-04 5/11/2005 K40 1.30E+03 6.50E+01 9.00E+01 TM 23 L9263-04 5/11/2005 La-140 1.60E+00 2.90E+00 1.OOE+01 TM 23 L9263-04 5/11/2005 Mn-54 6.00E-01 1.70E+00 6.10E+00 TM 23 L9263-04 5/11/2005 Nb-95 6.00E-01 2.00E+00 7.20E+00 TM 23 L9263-04 5/11/2005 Ru-103 -4.00E-01 1.80E+00 6.40E+00 TM 23 L9263-04 5/11/2005 Ru-106 2.1OE+01 1.50E+01 5.00E+01 TM 23 L9263-04 5/11/2005 Sb-124 -1.50E+00 4.20E+00 1.60E+01 TM 23 L9263-04 5/11/2005 Sb-125 O.OOE+00 4.50E+00 1.60E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-203-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 CONC STD.DEV. MDC LTYP_

SAMPLE STATION LSN END DATE NUCLIDE (pCi/L) (pCi/L) (pCiiL)

TM 23 L9263-04 5/11/2005 Se-75 -2.30E+00 2.1OE+00 7.40E+0O TM 23 L9263-04 5111/2005 Zn-65 -2.20E+00 4.40E+00 1.60E+OI TM 23 L9263-04 5/11/2005 Zr-95 3.90E+00 3.20E+00 1.1OE+OI TM 23 L9309-04 5/25/2005 AcTh-228 -5.30E+00 9.20E+00 3.50E+O1 Ag-108m -1.OOE+00 1.70E+00 6.40E+0O U TM TM TM 23 23 23 L9309-04 L9309-04 L9309-04 5/25/2005 5/25/2005 5/25/2005 Ag-11 Om Ba-140 5.60E+00 O.OOE+00 2.90E+00 3.60E+00 9.1OE+O0 1.40E+OI TM 23 L9309-04 5/25/2005 Be-7 2.70E+01 1.70E+01 5.60E+OI TM 23 L9309-04 5/25/2005 Ce-141 -4.80E+00 2.90E+00 1.OOE+O I TM 23 L9309-04 5/25/2005 Ce-1 44 -2.04E+01 8.30E+00 3.20E+O I L9309-04 5/25/2005 Co-57 1.50E+00 1.1 OE+OO 3.50E+0O U TM TM TM 23 23 23 L9309-04 L9309-04 5/25/2005 5/25/2005 Co-58 Co-60

-1.OOE-01

-4.00E-01 2.30E+00 2.70E+00 8.60E+0) 1.OOE+O I TM 23 L9309-04 5/25/2005 Cr-51 -5.OOE+00 1.60E+01 5.70E+O I TM 23 L9309-04 5/25/2005 Cs-134 -1.80E+00 2.30E+00 8.80E+O0 TM 23 L9309-04 5/25/2005 Cs-1 37 -3.30E+00 2.30E+00 8.90E+0i)

TM 23 L9309-04 5/25/2005 Fe-59 -4.OOE+00 7.80E+00 3.00E+O I 5/25/2005 1-131 3.OOE-01 3.60E+00 1.30E+Ol U TM TM TM 23 23 23 L9309-04 L9309-04 L9309-04 5/25/2005 5/25/2005 1-131 K-40

-9.30E-02 1.40E+03 1.70E-02 8.70E+01 6.20E-Ol 1.0OE+02 23 L9309-04 5/25/2005 La-140 O.OOE+OO 4.1 OE+00 1.60E+O I U TM TM TM 23 23 L9309-04 L9309-04 5/25/2005 5/25/2005 Mn-54 Nb-95 6.OOE-01

-9.OOE-01 1.80E+00 2.80E+00 6.70E+O0 1.OOE+Ol TM 23 L9309-04 5/25/2005 Ru-103 2.10E+00 2.30E+00 7.80E+O)

TM 23 L9309-04 5/25/2005 Ru-106 -3.20E+01 1.90E+01 7.60E+01 TM 23 L9309-04 5/25/2005 Sb-1U24 4.0E+00 4.50E+00 1.60E+01 TM 23 L9309-04 5/25/2005 Sb-125 4.10E+00 5.1OE+00 1.90E+01 5/25/2005 Se-75 2.20E+00 2.30E+00 7.70E+00 U TM TM TM 23 23 23 L9309-04 L9309-04 L9309-04 5/25/2005 5/25/2005 Zn-65 Zr-95

-8.20E+00 3.20E+00 4.50E+00 3.70E+00 1.90E+01 1.30E+01 TM 23 L9400-04 6/8/2005 AcTh-228 O.OOE+OO 7.80E+00 2.80E+01 TM 23 L9400-04 6/8/2005 Ag-108m 2.00E-01 1.60E+00 5.60E+00 TV 23 L9400-04 6/8/2005 Ag-1I Om 3.60E+00 2.90E+00 9.60E+OO TV, 23 L9400-04 6/8/2005 Ba-140 -1.50E+oo 3.40E+00 1.40E+01 TM 23 L9400-04 6/8/2005 Be-7 3.30E+01 1.80E+01 5.70E+01 l TA 23 L9400-04 6/8/2005 Ce-141 4.60E+00 3.30E+00 1.1OE+01 TV 23 L9400-04 6/8/2005 Ce-144 -2.90E+01 1.10E+01 4.30E+01 TU. 23 L9400-04 6/8/2005 Co-57 -2.80E+00 1.50E+00 5.50E+OO TU, 23 L9400-04 6/8/2005 Co-58 -1.20E+00 2.40E+00 8.80E+C0 Tl/; 23 L9400-04 6/8/2005 Co-60 8.OOE-01 2.30E+00 8.20E+OO TNI 23 L9400-04 6/8/2005 Cr-51 2.0OE+00 2.20E+01 7.70E+C 1 TMI 23 L9400-04 6/8/2005 Cs-134 1.80E+00 2.1OE+00 7.20E+CO TMI 23 L9400-04 6/8/2005 Cs-137 1.30E+00 2.1OE+00 7.50E+CO TM 23 L9400-04 6/8/2005 Fe-59 3.20E+00 7.1OE+00 2.50E+C1 TMvl 23 L9400-04 6/8/2005 1-131 1.00E-01 5.60E+00 2.OOE+C1 TMVI 23 L9400-04 6/8/2005 1-131 2.60E-01 2.30E-01 7.80E-01 Tll 23 L9400-04 6/8/2005 K-40 1.30E+03 7.50E+01 9.50E+01 TMI 23 L9400-04 6/8/2005 La-140 -1.70E+00 3.90E+00 1.60E+C1 TMI 23 L9400-04 6/8/2005 Mn-54 1.90E+00 2.1OE+00 7.30E+CO

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-204-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC I )

TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCUL) (pCi/L)

LA TM 23 L9400-04 6/8/2005 Nb-95 -6.OOE-01 2.70E+00 9.80E+00 TM 23 L9400-04 6/8/2005 Ru-1 03 -1.50E+00 2.1 OE+00 8.OOE+00 TM 23 L9400-04 6/8/2005 Ru-1 06 1.30E+01 1.90E+01 6.60E+01 TM 23 L9400-04 6/8/2005 Sb-124 5.90E+00 4.80E+00 1.60E+01 TM 23 L9400-04 6/8/2005 Sb-1 25 7.80E+00 4.80E+00 1.60E+01 I I TM 23 L9400-04 L9400-04 6/8/2005 6/8/2005 Se-75 Zn-65 8.00E-01

-1.90E+00 2.30E+00 4.80E+00 8.OOE+00 1.80E+01 LI TM 23 TM 23 L9400-04 6/8/2005 Zr-95 4.10E+00 3.80E+00 1.30E+01 TM 23 L9474-04 6/22/2005 AcTh-228 2.40E+00 6.0OE+OO 2.1OE+01 TM 23 L9474-04 6/22/2005 Ag-108m -6.OOE-01 I.IOE+00 3.70E+00 TM 23 L9474-04 6/22/2005 Ag-11Om -1.60E+00 2.OOE+00 7.30E+00 TM 23 L9474-04 6/22/2005 Ba-140 -1.20E+00 2.60E+00 9.80E+00 TM 23 L9474-04 6/22/2005 Be-7 9.OOE+00 1.1OE+01 3.60E+01 TM 23 L9474-04 6/22/2005 Ce-141 3.30E+00 1.90E+00 6.30E+00 TM 23 L9474-04 6/22/2005 Ce-1 44 -5.70E+00 6.20E+00 2.1OE+01 TM 23 L9474-04 6/22/2005 Co-57 1.06E+00 8.10E-01 2.70E+00 TM 23 L9474-04 6/22/2005 Co-58 -8.OOE-01 1.50E+00 5.20E+00 TM 23 L9474-04 6/22/2005 Co-60 -3.OOE-01 1.60E+00 5.80E+O0 TM 23 L9474-04 6/22/2005 Cr-51 -4.00E+OO 1.1OE+01 3.70E+01 4U.

TM 23 L9474-04 6/22/2005 Cs-1 34 1.OOE-01 1.40E+00 5.10E+00 TM 23 L9474-04 6/22/2005 Cs-137 9.OOE-01 1.20E+00 4.0OE+OO TM TM TM 23 23 23 L9474-04 L9474-04 L9474-04 6/22/2005 6/22/2005 6/22/2005 Fe-59 1-131 1-131 5.60E+00

-2.OOE-02

-7.OOE-01 4.60E+00 1.40E-01 3.20E+00 1.50E+01 8.40E-01 1.1OE+01 L

L t

TM 23 L9474-04 6/22/2005 K-40 1.49E+03 5.20E+01 6.90E+01 TM 23 L9474-04 6/22/2005 La-1 40 -1.30E+00 3.OOE+OO 1.1OE+01 TM 23 L9474-04 6/22/2005 Mn-54 1.OOE+00 1.30E+00 4.60E+00 TM 23 L9474-04 6/22/2005 Nb-95 6.OOE-01 1.70E+00 5.90E+00 TM TM 23 23 L9474-04 L9474-04 6/22/2005 6/22/2005 Ru-103 Ru-106

-2.00E+OO

-1.1OE+01 1.40E+00 1.1OE+01 4.90E+00 3.90E+01 L

TM 23 L9474-04 6/22/2005 Sb-124 8.20E+00 3.30E+00 9.90E+00 TM TM 23 23 L9474-04 L9474-04 6/22/2005 6/22/2005 Sb-125 Se-75 5.70E+00 2.50E+00 2.50E+00 1.40E+00 3.50E+00 1.1OE+01 4.50E+00 1.30E+01 LI TM 23 L9474-04 6/22/2005 Zn-65 -2.70E+00 TM TM TM 23 23 23 L9474-04 L9528-04 L9528-04 6/22/2005 7/6/2005 7/6/2005 Zr-95 AcTh-228 Ag-108m

-5.1OE+00

-2.90E+00

-3.OOE-01 2.60E+00 8.10E+00 1.70E+00 9.60E+00 3.OOE+01 6.10E+00 L

7/6/2005 2.90E+00 2.80E+00 9.40E+00 TM TM TM 23 23 23 L9528-04 L9528-04 L9528-04 7/6/2005 7/6/2005 Ag-1IOm Ba-140 Be-7

-1.20E+00 4.00E+00 3.OOE+0O 1.60E+01 1.20E+01 5.60E+01 LI TM 23 L9528-04 7/6/2005 Ce-141 9.OOE-01 2.60E+00 8.90E+00 TM TM 23 23 L9528-04 L9528-04 7/6/2005 7/6/2005 Ce-144 Co-57 3.OOE+00 8.00E-01 I.OOE+0i 1.30E+00 3.50E+01 4.30E+00 L TM 23 L9528-04 7/6/2005 Co-58 -1.70E+00 2.10E+00 8.1 OE+OO TM 23 L9528-04 7/6/2005 Co-60 1.OOE+00 2.40E+O0 8.60E+00 TM 23 L9528-04 7/6/2005 Cr-51 1.60E+01 1.50E+01 5.IOE+01 TM 23 L9528-04 7/6/2005 Cs-1 34 1.20E+00 2.50E+00 8.80E+00 TM 23 L9528-04 7/6/2005 Cs-137 1.80E+00 2.O0E+OO 6.90E+00 TM 23 L9528-04 7/6/2005 Fe-59 2.1OE+00 6.50E+00 2.40E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-205-

l--

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYPE STATION LSN DATE --

NUCLIDE 1-131 (pCi/L)

-3.OOE-01 (pCi/L) 3.1OE+00 (pCi/L) 1.1 OE+01 TM 23 L9528-04 7/6/2005 7.OOE-OI L TM TM TM 23 23 23 L9528-04 L9528-04 L9528-04 7/6/2005 7/6/2005 7/612005 1-131 K-40 La-140 8.OOE-02 1.27E+03

-1.40E+00 1.50E-01 8.1 OE+01 3.40E+00 1.30E+O;'

1.40E+OI L9528-04 7/6/2005 Mn-54 9.OOE-01 2.40E+00 8.50E+0()

L TM TM TM 23 23 23 L9528-04 L9528-04 7/6/2005 7/6/2005 Nb-95 Ru-103 3.80E+00

-1.50E+00 2.30E+00 2.20E+00 7.50E+0()

7.90E+0()

TM 23 L9528-04 7/6/2005 Ru-106 -2.OOE+00 1.70E+01 6.30E+O I L

i TM TM 23 23 L9528-04 L9528-04 7/6/2005 7/6/2005 Sb-1 24 Sb-i1 25 2.30E+00 3.60E+00 4.80E+0O 5.20E+00 1.80E+OI 1.80E+OI TM 23 L9528-04 7/6/2005 Se-75 3.OOE-01 2.1 OE+OO 7.50E+0()

L TM TM 23 23 L9528-04 L9528-04 L9624-04 7/6/2005 7/6/2005 7/20/2005 Zn-65 Zr-95 AcTh-228

-4.20E+00

-7.OOE-01 7.40E+00 5.OOE+OO 4.OOE+00 8.50E+00 1.9OE+OI 1.50E+OI 2.90E+O'I TM 23 O.OOE+00 4.70E+0)

L TM 23 L9624-04 7/20/2005 Ag-108m 1.30E+00 TM 23 L9624-04 7/20/2005 Ag-11 Om -3.OOE-01 2.60E+00 9.20E+0)

TM 23 L9624-04 7/20/2005 Ba-140 4.OOE-01 3.20E+00 1.20E+OI TM 23 L9624-04 7/20/2005 Be-7 1.20E+01 1.40E+01 4.60E+O I L TM TM 23 23 L9624-04 L9624-04 7/20/2005 7/20/2005 Ce-141 Ce-144

-3.40E+00

-4.50E+00 2.50E+00 8.50E+00 8.70E+0O 2.90E+0 I TM 23 L9624-04 7/20/2005 Co-57 -1.40E+00 I.OOE+00 3.60E+0)

L TM TM 23 23 L9624-04 L9624-04 7/20/2005 7/20/2005 Co-58 Co-60 Cr-51

-7.OOE-01 4.1OE+O0

-1.OOE+00 1.80E+00 1.90E+O0 1.50E+01 6.60E+0')

6.10E+0O 5.1OE+Ol TM 23 L9624-04 7/20/2005 TM 23 L9624-04 7/20/2005 Cs-1 34 -2.OOE+00 1.60E+00 6.40E+OO)

TM 23 L9624-04 7/20/2005 Cs-137 -3.OOE-01 1.60E+00 5.70E+O)

L TM TM 23 23 L9624-04 7/20/2005 L9624-04 7/20/2005 Fe-59 1-131 1-131

-1.50E+00 2.1OE+00

-7.1 OE-02 5.90E+00 3.80E+00 1.20E-02 2.20E+01 1.30E+01 6.50E-01 TM 23 L9624-04 7/20/2005 Th' 23 L9624-04 7/20/2005 K-40 1.37E+03 6.80E+01 1.OOE+02 TNM 23 L9624-04 7/20/2005 La-140 5.OOE-01 3.70E+00 1.40E+01 L TM TN 23 23 L9624-04 7/20/2005 L9624-04 7/20/2005 Mn-54 Nb-95 Ru-1 03 1.OOE+00 6.0OE+O0 2.70E+00 1.80E+00 2.1 OE+00 2.00E+00 6.20E+OD 6.20E+00 6.50E+03 TM 23 L9624-04 7/20/2005 TM 23 L9624-04 7/20/2005 Ru-106 -7.OOE+O0 1.50E+01 5.30E+01 TM 23 L9624-04 7/20/2005 Sb-i124 -8.OOE-01 4.30E+00 1.70E+01 TN 23 L9624-04 7/20/2005 Sb-125 -2.40E+00 4.1 OE+00 1.50E+01 TN 23 L9624-04 7/20/2005 Se-75 2.OOE-01 1.70E+00 6.OOE+00 TN 23 L9624-04 7/2012005 Zn-65 4.30E+00 4AOE+O0 1.50E+01 TM 23 L9624-04 7/20/2005 Zr-95 1.90E+00 3.20E+00 1.10E+01 TN 23 L9702-04 8/3/2005 AcTh-228 1.70E+00 4.70E+00 1.60E+01 TM 23 L9702-04 8/3/2005 Ag-108m 7.OOE-02 9.80E-01 3.40E+CO TN: 23 L9702-04 8/3/2005 Ag-110m O.OOE+O0 1.70E+00 6.1OE+CO TNI 23 L9702-04 8/3/2005 Ba-140 -5.OOE+00 2.20E+00 9.1OE+CO TM 23 L9702-04 8/3/2005 Be-7 -1.53E+01 9.90E+00 3.60E+01 TM 23 L9702-04 8/3/2005 Ce-141 -9.OOE-01 1.60E+00 5.60E+OO TM 23 L9702-04 813/2005 Ce-144 -1.60E+00 6.70E+00 2.30E+01 TM 23 L9702-04 8/312005 Co-57 1.33E+00 8.60E-01 2.80E+00 Thl 23 L9702-04 8/3/2005 Co-58 -1.40E+00 1.40E+00 5.10E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-206-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCVL) (pCi/L))

TM 23 L9702-04 8/3/2005 Co-60 1.60E+00 1.60E+00 5.30E+00 TM 23 L9702-04 8/3/2005 Cr-51 7.OOE+00 1.20E+01 4.1OE+01 TM 23 L9702-04 8/3/2005 Cs-134 2.50E+00 1.40E+00 4.40E+00 J~

TM 23 L9702-04 8/3/2005 Cs-137 2.80E+00 1.20E+00 3.90E+00 ~I TM 23 L9702-04 8/3/2005 Fe-59 6.90E+O0 3.60E+OO 1.20E+01 TM 23 L9702-04 8/3/2005 1-131 1.60E+00 3.20E+00 1.1OE+01 j TM 23 L9702-04 8/3/2005 1-131 1.30E-01 1.60E-01 6.30E-01 TM 23 L9702-04 8/3/2005 K-40 1.38E+03 4.70E+01 6.1OE+01 TM 23 L9702-04 8/3/2005 La-140 -5.80E+00 2.50E+00 1.OOE+01 TM 23 L9702-04 8/3/2005 Mn-54 -6.OOE-01 1.20E+00 4.40E+00 TM 23 L9702-04 8/3/2005 Nb-95 -2.90E+00 1.60E+00 5.90E+00 TM 23 L9702-04 8/3/2005 Ru-1 03 -1.70E+00 1.40E+00 5.OOE+00 TM 23 L9702-04 8/3/2005 Ru-1 06 -1.OOE+OO 1.1OE+01 3.90E+01 TM 23 L9702-04 8/3/2005 Sb-124 -2.40E+00 2.60E+00 1.OOE+01 TM 23 L9702-04 8/3/2005 Sb-125 -6.OOE-01 2.90E+00 1.OOE+01 TM 23 L9702-04 8/3/2005 Se-75 -1.1OE+OO 1.50E+00 5.1OE+00 TM 23 L9702-04 8/3/2005 Zn-65 -1.1OE+00 3.1 OE+00 1.1OE+01 TM 23 L9702-04 8/3/2005 Zr-95 -4.OOE-01 2.20E+00 7.90E+00 TM 23 L9766-04 8/17/2005 AcTh-228 -1.14E+01 5.1 OE+00 2.OOE+01 TM 23 L9766-04 8/17/2005 Ag-108m -1.OOE+OO 1.20E+00 4.10E+00 TM 23 L9766-04 8/17/2005 Ag-110m -1.90E+00 1.70E+00 6.40E+00 TM 23 L9766-04 8/17/2005 Ba-140 -4.70E+00 2.90E+00 1.20E+01 TM 23 L9766-04 8/17/2005 Be-7 -2.30E+01 1.30E+01 4.90E+01 TM 23 L9766-04 8/17/2005 Ce-141 3.1OE+OO 2.40E+00 8.00E+00 TM 23 L9766-04 8/17/2005 Ce-144 4.90E+00 7.60E+00 2.60E+01 TM 23 L9766-04 8/17/2005 Co-57 -7.OOE-01 1.OOE+OO 3.50E+00 TM 23 L9766-04 8/17/2005 Co-58 -1.OOE-01 1.30E+00 4.60E+00 TM 23 L9766-04 8/17/2005 Co-60 7.OOE-01 1.70E+00 5.90E+00 TM 23 L9766-04 8/17/2005 Cr-51 1.60E+01 1.50E+01 4.90E+01 TM 23 L9766-04 8/17/2005 Cs-134 6.OOE-01 1.40E+00 4.80E+00 TM 23 L9766-04 8/17/2005 Cs-137 1.40E+00 1.40E+00 4.60E+00 TM 23 L9766-04 8/17/2005 Fe-59 O.OOE+OO 4.70E+00 1.70E+01 TM 23 L9766-04 8/17/2005 1-131 -I.OOE-02 1.60E-01 9.40E-01 TM 23 L9766-04 8/17/2005 1-131 -1.70E+00 4.OOE+00 1.40E+01 TM 23 L9766-04 8/17/2005 K-40 1.35E+03 5.30E+01 6.60E+01 TM 23 L9766-04 8/17/2005 La-140 -5.40E+00 3.30E+00 1.30E+01 TM 23 L9766-04 8/17/2005 Mn-54 -1.OOE-01 1.30E+00 4.70E+00 TM 23 L9766-04 8/17/2005 Nb-95 -1.1OE+00 1.60E+00 5.70E+00 TM 23 L9766-04 8/17/2005 Ru-1 03 -1.OOE+0O 1.50E+00 5.30E+00 TM 23 L9766-04 8/17/2005 Ru-1 06 3.0OE+O0 1.30E+01 4.50E+01 TM 23 L9766-04 8/17/2005 Sb-124 -2.1 OE+00 3.30E+00 1.30E+01 TM 23 L9766-04 8/17/2005 Sb-125 -4.60E+00 3.70E+00 1.30E+01 TM 23 L9766-04 8/17/2005 Se-75 -2.40E+00 1.60E+00 5.70E+00 TM 23 L9766-04 8/17/2005 Zn-65 -2.20E+00 3.50E+00 1.30E+01 TM 23 L9766-04 8/17/2005 Zr-95 -1.50E+00 2.60E+00 9.50E+00 TM 23 L9880-04 9/14/2005 AcTh-228 7.80E+00 6.90E+OO 2.30E+01 TM 23 L9880-04 9/14/2005 Ag-108m -2.OOE-01 1.20E+00 4.30E+00 TM 23 L9880-04 9/14/2005 Ag-1I1m 6.OOE-01 2.40E+00 8.40E+00 TM 23 L9880-04 9/14/2005 Ba-140 -2.50E+00 2.80E+00 1.1OE+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-207-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYF E STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 23 L9880-04 9/14/2005 Be-7 4.OOE+00 1.30E+01 4.50E+O-I L TM TM TM 23 23 23 L9880-04 L9880-04 L9880-04 9/14/2005 9/14/2005 9/14/2005 Ce-141 Ce-144 Co-57 2.80E+0O

-1.IOE+00

-1.72E+00 2.1 OE+00 7.20E+00 9.OOE-01 7.OOE+0O 2.50E+OI 3.20E+0)

L9880-04 9/14/2005 Co-58 7.00E-01 1.70E+00 5.80E+0)

U TM TM TM 23 23 23 L9880-04 L9880-04 9/14/2005 9/14/2005 Co-60 Cr-51 2.OOE-01 1.10E+01 2.OOE+00 1.30E+01 7.1 OE+0) 4.40E+O I TMV 23 L9880-04 9/14/2005 Cs-134 4.OOE-01 1.70E+00 6.1OE+01)

Th' 23 L9880-04 9/14/2005 Cs-137 9.OOE-01 1.40E+00 4.90E+01) 9114/2005 Fe-59 4.60E+00 5.OOE+00 1.70E+Ol L TM TMv Thv.

23 23 23 L9880-04 L9880-04 L9880-04 9/14/2005 9/14/2005 1-131 1-131

-8.20E-02

-4.OOE-01 1.60E-02 3.40E+00 5.80E-0 I 1.20E+Ol TM 23 L9880-04 9/14/2005 K-40 1.33E+03 5.90E+01 9.50E+Ol L TN TN 23 23 L9880-04 L9880-04 9/14/2005 9/14/2005 La-140 Mn-54

-2.90E+00

-6.OOE-01 3.20E+00 1.50E+00 1.30E+Ol 5.50E+O)

TM. 23 L9880-04 9/14/2005 Nb-95 -1.OOE-01 1.90E+00 6.70E+O)

L TM.

TN.

23 23 23 L9880-04 L9880-04 L9880-04 9/14/2005 9/14/2005 9/14/2005 Ru-1 03 Ru-1 06 Sb-124

-3.30E+00

-1.60E+01 3.OOE+00 1.60E+00 1.30E+01 3.70E+00 6.IOE+0) 4.70E+01 1.30E+01 TM 3.60E+00 1.20E+01 L TMI TMI TMI 23 23 23 L9880-04 L9880-04 L9880-04 9/14/2005 9/14/2005 9/14/2005 Sb-125 Se-75 Zn-65 6.20E+00

-1.OOE+00

-1.40E+00 1.60E+00 3.90E+00 5.50E+OD 1.40E+01 TNI 23 L9880-04 9/14/2005 Zr-95 8.60E+00 3.OOE+00 9.30E+OO L TMI TM 23 23 L9963-04 L9963-04 9/28/2005 9/28/2005 AcTh-228 Ag-108m

-4.OOE-01

-7.OOE-01 8.50E+00 1.60E+00 3.10E+01 5.80E+00 TMl 23 L9963-04 9/28/2005 Ag-1IOm 2.30E+00 2.80E+00 9.50E+00 TMl 23 L9963-04 9/28/2005 Ba-140 9.OOE-01 3.50E+00 1.30E+01 Thl 23 L9963-04 9/28/2005 Be-7 7.OOE+00 1.50E+01 5.40E+01 Thl 23 L9963-04 9/28/2005 Ce-141 -2.40E+00 2.80E+00 1.OOE+01 Thl 23 L9963-04 9/28/2005 Ce-144 -6.OOE+00 9.80E+00 3.40E+01 Thl 23 L9963-04 9/28/2005 Co-57 9.OOE-01 1.30E+00 4.30E+00 TMl 23 L9963-04 9/28/2005 Co-58 1.20E+00 2.20E+00 7.70E+00 Thl 23 L9963-04 9/28/2005 Co-60 -1.OOE+OO 2.80E+00 I .OOE+01 TMV 23 L9963-04 9/28/2005 Cr-51 I.OOE+01 1.70E+01 5.80E+01 TMl 23 L9963-04 9/28/2005 Cs-1 34 -3.30E+00 2.50E+00 9.40E+00 Thl 23 L9963-04 9/28/2005 Cs-137 -5.OOE-01 2.OOE+00 7.40E+00 Thl 23 L9963-04 9/28/2005 Fe-59 -1.76E+01 5.20E+00 2.20E+01 TM 23 L9963-04 9/28/2005 1-131 1.20E-01 1.50E-01 6.OOE-C 1 Thl 23 L9963-04 9/28/2005 1-131 -3.70E+00 4.OOE+OO 1.50E+C01 TMl 23 L9963-04 9/28/2005 K-40 1.47E+03 8.1OE+01 1.20E+C02 TM 23 L9963-04 9/28/2005 La-140 1.OOE+O0 4.OOE+00 1.50E+C'1 Thl 23 L9963-04 9/28/2005 Mn-54 2.90E+00 1.90E+00 6.40E+O0 TM 23 L9963-04 9/28/2005 Nb-95 -3.OOE+00 2.60E+00 9.90E+OO TMI 23 L9963-04 9/28/2005 Ru-103 -4.OOE-01 2.OOE+00 7.20E+O0 TMI 23 L9963-04 9/28/2005 Ru-106 -1.OOE+01 1.50E+01 5.70E+C1 TM 23 L9963-04 9/28/2005 Sb-124 4.20E+00 4.90E+00 1.70E+01 TM 23 L9963-04 9/28/2005 Sb-125 -5.40E+00 4.70E+00 1.80E+01 TMI 23 L9963-04 9/28/2005 Se-75 4.OOE+O0 2.1OE+00 6.80E+O0 TMI 23 L9963-04 9/2812005 Zn-65 -5.70E+00 5.1OE+00 1.90E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-208-

F)

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 Li SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

TM 23 L9963-04 9/28/2005 Zr-95 -2.60E+00 3.70E+00 1.40E+01 TM 23 L10021-0410/12/2005 AcTh-228 5.60E+00 7.60E+00 2.60E+01 TM 23 L10021-0410/12/2005 Ag-108m 1.30E+00 1.40E+00 4.70E+00 TM 23 L10021-0410/12/2005 Ag-1I0m -9.20E+00 2.80E+00 1.IOE+01 TM 23 L10021-0410/12/2005 Ba-140 -7.OOE-01 2.70E+00 1.10E+01 TM 23 L10021-0410/12/2005 Be-7 O.OOE+00 1.30E+01 4.60E+01 L TM 23 L10021-0410/12/2005 Ce-141 3.70E+00 2.40E+00 8.10E+00 TM 23 L10021-0410/12/2005 Ce-144 1.30E+01 8.90E+00 3.00E+01 TM 23 L10021-0410/12/2005 Co-57 3.OOE-01 1.20E+00 4.OOE+00 TM 23 L10021-0410/12/2005 Co-58 -7.OOE-01 2.10E+00 7.50E+00 TM 23 L10021-0410/12/2005 Co-60 6.OOE-01 2.30E+00 8.10E+OO TM 23 L10021-0410/12/2005 Cr-51 -7.00E+00 1.40E+01 5.OOE+01 TM 23 L10021-0410/12/2005 Cs-134 4.10E+00 2.20E+00 7.30E+00 TM 23 L10021-0410/12/2005 Cs-137 -3.50E+00 1.90E+00 7.30E+00 TM 23 L10021-0410/12/2005 Fe-59 3.10E+00 4.50E+00 1.60E+01 TM 23 L10021-0410/12/2005 1-131 7.IOE-02 9.80E-02 4.10E-01 TM 23 L10021-0410/12/2005 1-131 3.50E+00 3.O0E+0O 9.90E+00 K-40 1.50E+03 7.50E+01 1.10E+02 TM TM 23 23 L10021-0410/12/2005 L10021-0410/12/2005 La-140 -8.00E-01 3.10E+00 1.20E+01 L

TM 23 L10021-0410/12/2005 Mn-54 1.50E+00 2.O0E+00 6.90E+00 TM 23 L10021-0410/12/2005 Nb-95 7.00E-01 2.10E+00 7.60E+00 TM 23 L10021-0410/12/2005 Ru-103 -1.80E+00 1.80E+00 6.50E+00 TM 23 L10021-0410/12/2005 Ru-106 5.00E+00 1.60E+01 5.50E+01 L TM 23 L10021-0410/1212005 Sb-124 5.IOE+00 4.80E+00 1.70E+01 TM 23 L10021-0410/12/2005 Sb-125 6.10E+00 4.60E+00 1.50E+01 TM 23 L10021-0410/12/2005 Se-75 -9.OOE-01 1.80E+00 6.30E+00 Li TM 23 L10021-0410112/2005 Zn-65 -2.60E+00 4.30E+00 1.60E+01 TM TM TM 23 23 23 L10021-0410/1212005 L10167-04 11/9/2005 L10167-04 11/9/2005 Zr-95 AcTh-228 Ag-108m 6.OOE-01

-9.OOE-01

-9.30E-01 3.70E+00 4.50E+00 8.60E-01 1.30E+01 1.60E+01 3.00E+OO U

TM 23 L10167-04 11/9/2005 Ag-110m -1.30E+00 1.50E+00 5.20E+00 TM 23 L10167-04 11/9/2005 Ba-140 -6.00E-01 2.10E+00 7.50E+00 TM 23 L10167-04 11/9/2005 Be-7 1.27E+01 9.20E+00 3.00E+01 TM 23 L10167-04 11/9/2005 Ce-141 1.20E+00 1.80E+00 6.20E+OO TM TM 23 23 23 L10167-04 11/9/2005 L10167-04 11/9/2005 L10167-04 11/9/2005 Ce-144 Co-57 Co-58

-4.30E+00 5.70E-01

-1.90E+00 5.70E+00 7.60E-01 1.10E+00 2.00E+01 2.50E+00 4.20E+00 L

TM TM 23 L10167-04 11/9/2005 Co-60 -6.00E-01 1.40E+00 4.90E+00 TM 23 L10167-04 11/9/2005 Cr-51 -1.80E+01 1.10E+01 3.90E+01 Li TM 23 L10167-04 11/9/2005 Cs-134 1.60E+00 1.10E+00 3.70E+00 TM 23 L10167-04 11/9/2005 Cs-137 1.00E-01 1.10E+00 3.70E+00 TM 23 L10167-04 11/9/2005 Fe-59 -1.50E+00 2.90E+00 1.00E+01 TM 23 L10167-04 11/9/2005 1-131 -1.15E-01 2.00E-02 6.90E-01 TM 23 L10167-04 11/9/2005 1-131 -3.60E+00 3.00E+00 1.00E+01 TM 23 L10167-04 11/9/2005 K-40 1.45E+03 4.00E+01 5.40E+01

TM 23 L10167-04 11/9/2005 La-140 -7.00E-01 2.40E+00 8.60E+00 TM 23 L10167-04 11/9/2005 Mn-54 1.30E+00 1.10E+00 3.70E+OO TM 23 L10167-04 11/9/2005 Nb-95 -2.60E+00 1.50E+00 5.30E+00 TM 23 L10167-04 11/9/2005 Ru-103 -3.00E-01 1.30E+00 4.30E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-209-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC L TYP,_ STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) 9.50E+00 (pCi/L) 3.20E+01 TM 23 L10167-04 11/912005 Ru-106 1.03E+01 I TM TM 23 23 L10167-04 L10167-04 111912005 11/912005 Sb-1 24 Sb-125 8.00E-01

-4.OOE-01 2.40E+00 2.60E+00 8.30E+OCI 9.00E+00 TM 23 L10167-04 11/9/2005 Se-75 6.00E-01 1.30E+00 4.50E+00 TM 23 L10167-04 11/9/2005 Zn-65 -3.20E+00 2.90E+00 1.00E+0'i TM 23 L10167-04 11/9/2005 Zr-95 -1.40E+00 2.00E+OO 7.20E+00 TM 23 L10268-04 12/7/2005 AcTh-228 1.28E+01 8.30E+00 2.70E+0'i TM 23 L10268-04 12/7/2005 Ag-1 08m 2.00E-01 1.70E+00 6.OOE+00 U TM TM 23 23 L10268-04 L10268-04 12/7/2005 12/7/2005 Ag-1I1m Ba-140 3.20E+00 8.00E-01 3.1OE+00 3.60E+00 1.70E+01 1.10EOE.0 I1.40E+0i1 6.OOE+0il TM 23 L10268-04 12/7/2005 Be-7 -2.00E+00 TM 23 LI 0268-04 12/7/2005 Ce-141 3.20E+00 3.30E+00 1.10EftOi Li TM 23 L10268-04 12/7/2005 Ce-144 5.OOE+00 1.iOE+01 3.60E+0il TM 23 L10268-04 12/7/2005 Co-57 1.90E+00 1.30E+00 4.40E+00)

TM 23 L10268-04 12/7/2005 Co-58 2.OOE-01 2.30E+00 8.40E40()

TM 23 LI 0268-04 12/7/2005 Co-60 2.60E+00 3.OOE+00 1.OOE+0'I TM 23 LI 0268-04 12/7/2005 Cr-51 -1.80E+01 1.70E+01 6.4OE.0'I TM 23 LI 0268-04 12/7/2005 Cs-134 3.50E+00 2.20E+00 7.30E+0t)

L TM TM 23 23 L10268-04 L10268-04 1217/2005 12/7/2005 Cs-137 Fe-59

-2.OOE-01 5.70E+00 2.00E+OO 5.70E+00 7.40E+01) 1.90E+0~l TM 23 L10268-04 12/7/2005 1-131 1.50E-01 1.70E-01 6.80E-O I

., TM TM 23 23 L10268-04 L10268-04 12/7/2005 12/7/2005 1-131 K-40

-5.20E+00 1.51 E+03 5.40E+00 8.50E+01 4.I0E+OO 2.OOE+0lI 1 .20E+02?

1.60E+O I TM 23 L10268-04 12/7/2005 La-140 I.OOE+OO 7.30E+01) l TM TM TM 23 23 23 L10268-04 L10268-04 LI 0268-04 12/7/2005 12/7/2005 12/7/2005 Mn-54 Nb-95 Ru-103 3.50E+00

-9.10E+00

-5.00E-01 2.20E+00 2.80E+00 2.1OE+00 1.20E+01I 7.70E+0')

TM 23 LI 0268-04 12/7/2005 Ru-I06 1.90E+01 1.60E+01 5.50E+0 1 TM 23 L10268-04 12/7/2005 Sb-124 6.90E+O0 4.80E+00 1.60E.01 TM 23 L10268-04 12/7/2005 Sb-125 -1.50E+00 4.90E+00 1.80E+01 TM 23 L10268-04 12/7/2005 Se-75 1.60E+00 2.20E+00 7.50 E+0 3 TM 23 L10268-04 12/7/2005 Zn-65 -7.00E-01 5.10E+00 1.90E+01 TM 23 LI 0268-04 12/7/2005 Zr-95 -4.80E+00 3.90E+00 1 .50E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-210-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 Li SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

WG 1 L8981-01 3/16/2005 AcTh-228 1.90E+00 2.60E+00 9.10E+00 WG 1 L8981-01 3/16/2005 Ag-108m -8.60E-01 4.90E-01 1.80E+00 WG 1 L8981-01 3/16/2005 Ag-110m -9.60E-01 8.OOE-01 3.OOE+00 WG 1 L8981-01 3/16/2005 Ba-140 1.00E+00 1.80E+00 6.30E+00 WG WG 1

1 L8981-01 L8981-01 3/16/2005 3/16/2005 Be-7 Ce-141 Ce-144

-6.80E+00 1.60E+00

-9.OOE-01 6.30E+00 1.60E+00 3.90E+00 2.20E+01 5.20E+00 1.30E+01 L

WG 1 L8981-01 3/16/2005 WG I L8981-01 3/16/2005 Co-57 3.50E-01 5.OOE-01 1.70E+00 WG 1 L8981-01 3/16/2005 Co-58 -1.15E+00 6.20E-01 2.30E+00 WG 1 L8981-01 3/16/2005 Co-60 8.OOE-01 6.60E-01 2.20E+00 WG 1 L8981-01 3/16/2005 Cr-51 2.90E+00 7.60E+00 2.60E+01 WG I L8981-01 3/16/2005 Cs-134 -1.30E-01 6.1OE-01 2.20E+00 WG I L8981-01 3/16/2005 Cs-137 -1.OOE-02 6.10E-01 2.1OE+00 WG I L8981-01 3/16/2005 Fe-59 1.30E+00 2.10E+00 7.20E+00 WG I L8981-01 3/16/2005 GROSS BETA 2.60E+00 1.OOE+00 3.20E+00 WG 1 L8981-01 3/16/2005 H-3 5.10E+02 3.30E+02 1.OOE+03 WG I L8981-01 3/16/2005 1-131 -6.OOE-01 2.90E+00 1.OOE+01 WG 1 L8981-01 3/16/2005 K-40 -1.90E+00 9.10E+00 3.20E+01 -

WG I L8981-01 3/16/2005 La-140 1.10E+00 2.1OE+00 7.30E+00 WG 1 L8981-01 3/16/2005 Mn-54 -2.80E-01 6.10E-01 2.20E+00 _

WG I L8981-01 3/16/2005 Nb-95 7.20E-01 7.60E-01 2.60E+00 WG I L8981-01 3/16/2005 Ru-103 -6.70E-01 7.70E-01 2.70E+00 WG I L8981-01 3/16/2005 Ru-106 -7.OOE-01 5.30E+00 1.90E+01 L WG I L8981-01 3/16/2005 Sb-124 6.OOE-01 1.70E+00 5.90E+00

-1.30E+00 1.60E+00 5.60E+00 WG WG I

I L8981-01 L8981-01 3/16/2005 3/16/2005 Sb-125 Se-75 -9.40E-01 8.30E-01 2.90E+00 L WG 1 L8981-01 3/16/2005 Zn-65 O.OOE+00 1.80E+00 6.20E+00 WG WG 1

1 L8981-01 L9402-01 3/16/2005 6/9/2005 6/9/2005 Zr-95 AcTh-228 Ag-108m

-1.10E+00 5.70E+00 2.60E-01 1.10E+00 5.1OE+00 7.90E-01 4.10E+00 1.70E+01 2.70E+00 L

WG 1 L9402-01 WG I L9402-01 6/9/2005 Ag-110m -1.70E+00 1.40E+00 5.1OE+00 WG I L9402-01 6/9/2005 Ba-140 4.OOE-01 2.OOE+00 7.OOE+00 WG 1 L9402-01 6/9/2005 Be-7 -1.09E+01 8.10E+00 2.90E+01 U WG 1 L9402-01 6/9/2005 Ce-141 -2.90E+00 2.30E+00 7.70E+00 WG 1 L9402-01 6/9/2005 Ce-144 -6.80E+00 5.10E+00 1.80E+01 WG I L9402-01 6/9/2005 Co-57 -2.60E-01 6.20E-01 2.10E+00 L WG I L9402-01 6/9/2005 Co-58 -1.12E+00 9.30E-01 3.40E+00 WG 1 L9402-01 6/9/2005 Co-60 -9.OOE-01 1.20E+00 4.20E+00 WG I L9402-01 6/9/2005 Cr-51 -2.80E+00 9.30E+00 3.20E+01 WG 1 L9402-01 6/9/2005 Cs-134 5.10E-01 9.90E-01 3.40E+00 WG 1 L9402-01 6/9/2005 Cs-137 -2.20E+00 1.10E+00 3.90E+00 WG 1 L9402-01 6/9/2005 Fe-59 3.30E+00 3.10E+00 1.00E+01 WG 1 L9402-01 6/9/2005 GROSS BETA 5.47E+00 9.90E-01 2.50E+00

WG I L9402-01 6/9/2005 H-3 2.20E+02 3.10E+02 9.90E+02 WG 1 L9402-01 6/9/2005 1-131 -3.OOE+00 2.30E+00 8.1OE+00 WG 1 L9402-01 6/9/2005 K-40 1.00E+01 1.70E+01 5.80E+01 L WG 1 L9402-01 6/9/2005 La-140 5.00E-01 2.30E+00 8.1OE+00 WG I L9402-01 6/9/2005 Mn-54 -5.60E-01 8.80E-01 3.20E+00 WG I L9402-01 6/9/2005 Nb-95 2.OOE+00 1.70E+00 5.50E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-211-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC I TYP;- STATION LSN L9402-01 DATE 6/9/2005 NUCLIDE Ru-103 (pCUL)

-2.20E+00 (pCi/L) 1.10E+00 (pCVL) 3.90E+00 WC; WC; L9402-01 6/9/2005 Ru-106 -4.70E+00 9.20E+00 3.20E+01 WC; L9402-01 6/9/2005 Sb-1 24 2.80E+00 2.70E+00 9.10E+OO WC; L9402-01 6/9/2005 Sb-125 8.00E-01 2.40E+00 8.20E+Otl WC; L9402-01 6/9/2005 Se-75 8.OOE-01 1.OOE+00 3.40E+00 L WC; WC; L9402-01 L9402-01 6/9/2005 6/9/2005 Zn-65 Zr-95

-6.90E+00 2.70E+00 4.30E+00 1.70E+00 I.50E+01 5.70E+0Ot WC; L9881-01 9/14/2005 AcTh-228 1.25E+01 4.60E+00 1.40E+0' U WC; WC; L9881-01 L9881-01 9/14/2005 9/14/2005 Ag-108m Ag-11 Om

-2.11 E+00 1.1 OE+00

-4.00E-01 9.30E-01 1.60E+00 2.80E+00 3.50E+00 5.60E+0()

I.00E+0OI WC; L9881-01 9/14/2005 Ba-140 U WC; WC; WC; L9881-01 L9881-01 L9881-01 9/14/2005 9/14/2005 9/14/2005 Be-7 Ce-141 Ce-144

-1.OOE+01

-1.50E+00 1.OOE+00 1.OOE+01 1.90E+00 5.60E+00 3.70E+01 6.40E+00 I.90E+0O1 L9881-01 9/14/2005 Co-57 1.56E+00 7.40E-01 2.40E+0()

L WC; WC; WC; L9881-01 L9881-01 9/14/2005 9/14/2005 Co-58 Co-60 6.OOE-01

-3.OOE-01 1.10E+00 1.20E+00 3.80E+00 4.40E+00 WC; L9881-01 9/14/2005 Cr-51 6.00E+00 1.20E+01 4.00E+0OI L WC; WG; L9881-01 L9881-01 9/14/2005 9/14/2005 Cs-134 Cs-137 1.20E+00

-1.10E+00 1.20E+00 1.30E+00 4.10E+00 4.70E+0O WG; L9881-01 9/14/2005 Fe-59 -6.10E+00 3.50E+00 1.40E+OI C WC; WC; L9881 -01 L9881-01 L9881-01 9/14/2005 9/14/2005 9/14/2005 GROSS BETA H-3 1-131 7.70E+00

-5.50E+02

-3.OOE+00 1.30E+00 4.50E+02 3.40E+00 3.20E+00I 1.40E+03 1.20E+0OI WC; WE; L9881-01 9/14/2005 K-40 -1.80E+01 1.80E+01 6.70E+0OI WG L9881-01 9/14/2005 La-140 -4.OOE-01 3.30E+00 1.20E+0OI WC; L9881-01 9/14/2005 Mn-54 O.OOE+00 1.10E+00 4.00E+0O WC; L9881-01 9/14/2005 Nb-95 -2.60E+00 1.40E+00 5.30E+0O W(; L9881-01 9/14/2005 Ru-103 2.10E+00 1.30E+00 4.20E+04)

WC; L9881-01 9/14/2005 Ru-O06 1.10E+01 1.10E+01 3.60E+O I W(; L9881-01 9/14/2005 Sb-124 2.70E+00 3.60E+00 1.20E+O I WG L9881-01 9/14/2005 Sb-125 6.OOE-01 2.80E+00 9.70E+0')

WC; L9881-01 9/14/2005 Se-75 -8.OOE-01 1.20E+00 4.10E+0')

Wc; L9881-01 9/14/2005 Zn-65 -1.00E-01 5.00E+00 1.70E+O I WC; L9881-01 9/14/2005 Zr-95 -1.90E+00 2.00E+00 7.50E+0O WG L10269-01 12/7/2005 AcTh-228 2.70E+00 5.40E+00 1.90E+O0 WC; 3.OOE-01 1.20E+00 4.10E+0)

L10269-01 12/7/2005 Ag-108m WC;Y 7.20E+O)

L10269-01 12/7/2005 Ag-11 Om -1.60E+00 1.90E+00 WC;1 1.OOE+01 I L10269-01 12/7/2005 Ba-140 8.00E-01 2.80E+00 WC;2 4.40E+01 I L10269-01 12/7/2005 Be-7 2.00E+00 1.30E+01 WC; 9.70E+00 I L10269-01 12/7/2005 Ce-141 -4.30E+00 2.70E+00 WC; 2.60E+01 I L10269-01 12/7/2005 Ce-144 -1.1OE+00 7.60E+00 WG' 1.OOE-01 3.50E+00 I L10269-01 12/7/2005 Co-57 1.OOE+00 WCG; 5.30E+00 I L10269-01 1217/2005 Co-58 -1.20E+00 1.40E+00 W(, 1.1 OE+00 1.30E+00 4.40E+O0 1 L10269-01 12/7/2005 Co-60 I L10269-01 12/7/2005 Cr-51 3.00E+00 1.50E+01 5.20E+01 I L10269-01 12/7/2005 Cs-134 -2.00E-01 1.70E+00 5.90E+00 W(,1 1 L10269-01 12/7/2005 Cs-137 -1.OOE+00 1.40E+00 5.00E+0O W(,

W (G I L10269-01 12/7/2005 Fe-59 2.30E+00 3.1 OE+00 1.10E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-212-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 J SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCiIL) (pCi/L) (pCi/L)

WG 1 L10269-01 1217/2005 GROSS BETA 7.70E+00 1.40E+00 3.50E+00 WG 1 L10269-01 12/7/2005 H-3 -1.OOE+02 4.90E+02 1.50E+03 WG 1 L10269-0' 1 12/7/2005 1-131 8.00E+O0 4.10E+00 1.30E+01 WG 1 L10269-0' 1 12/7/2005 K-40 -2.50E+01 1.90E+01 7.00E+01 WG WG WG 1

1 L10269-0' 1 12/7/2005 LI 0269-0' 1 12/7/2005 LI 0269-0' 1 12/7/2005 La-140 Mn-54 Nb-95 9.00E-01 1.50E+00 3.00E+00 3.20E+00 1.40E+00 2.90E+00 1.20E+01 4.80E+00 9.60E+00 L

WG 1 LI 0269-0' 1 1217/2005 Ru-1 03 -3.10E+00 1.90E+00 6.80E+00 WG 1 LI 0269-0' 1112/7/2005 Ru-1 06 8.00E+00 1.40E+01 4.80E+01 WG 1 LI 0269-0' 1 12/7/2005 Sb-1 24 3.20E+00 3.40E+00 1.20E+01 WG 1 L10269-0' 1 12/7/2005 Sb-1 25 -5.80E+00 3.50E+00 1.30E+01 WG 1 L10269-01 1 12/7/2005 Se-75 -2.O0E+OO 1.70E+00 6.1OE+00 WG 1 L10269-01 1 12/7/2005 Zn-65 -2.OOE-01 4.70E+00 1.60E+01 WG 13 L10269-01 1 12/7/2005 Zr-95 -5.30E+00 2.80E+00 1.10E+01 WG 13 L8981-02 3/16/2005 AcTh-228 3.40E+00 3.00E+00 1.00E+01 I U WG 13 L8981-02 3/16/2005 Ag-108m 9.00E-01 5.90E-01 1.90E+00 WG 13 L8981-02 3/16/2005 Ag-I1Om 2.80E-01 8.90E-01 3.10E+OO WG 13 L8981-02 3/16/2005 Ba-140 -3.1OE+00 2.30E+00 8.80E+00 WG 13 L8981 -02 3/16/2005 Be-7 5.00E-01 6.20E+00 2.20E+01 WG 13 L8981 -02 3/16/2005 Ce-141 O.OOE+OO 1.40E+00 4.60E+00 WG 13 L8981-02 3/16/2005 Ce-144 -2.50E+00 3.40E+00 1.20E+01 WG 13 L8981-02 3/16/2005 L8981-02 3/16/2005 Co-57 -9.80E-01 2.90E-01 4.40E-01 6.80E-01 1.60E+00 2.40E+00 L 12 WG 13 Co-58 WG 13 L8981-02 3/16/2005 Co-60 6.50E-01 7.70E-01 2.70E+00 WG 13 L8981-02 3/16/2005 Cr-51 -2.00E+OO 7.20E+00 2.50E+01 WG 13 L8981-02 3/16/2005 Cs-134 -1.30E-01 7.90E-01 2.80E+00 WG 13 L8981-02 3/16/2005 Cs-1 37 3.50E-01 6.30E-01 2.20E+00 WG 13 L8981-02 3/16/2005 Fe-59 2.70E+00 2.50E+00 8.40E+OO WG WG 13 13 13 L8981-02 3/16/2005 L8981-02 3/16/2005 GROSS BETA H-3 5.20E+00 1.30E+02 1.1OE+00 3.1OE+02 2.90E+00 1.00E+03 L

WG 13 L8981-02 3/16/2005 1-131 8.OOE-01 2.70E+00 9.20E+00 WG WG 13 13 L8981-02 3/16/2005 L8981-02 3/16/2005 K-40 La-140 1.OOE+00

-3.60E+00 1.1OE+01 2.60E+00 4.00E+01 1.OOE+01 12 WG 13 L8981-02 3/16/2005 Mn-54 O.OOE+OO 6.40E-01 2.30E+00 WG WG WG 13 13 13 L8981-02 3/16/2005 L8981-02 3/16/2005 L8981-02 3/16/2005 Nb-95 Ru-103 Ru-1 06 9.20E-01

-1.20E-01

-1.OOE+00 9.20E-01 8.60E-01 6.00E+00 3.10E+00 3.00E+OO 2.10E+01 Li WG WG WG 13 13 13 L8981-02 3/16/2005 L8981-02 3/16/2005 L8981-02 3/16/2005 Sb-124 Sb-I1 25 Se-75 2.20E+00 2.40E+00

-6.20E-01 2.00E+OO 1.70E+00 7.70E-01 6.80E+00 5.80E+00 2.70E+00 LI WG 13 L8981-02 3/16/2005 Zn-65 -1.30E+00 1.50E+00 5.60E+00 WG WG 13 13 L8981-02 3/16/2005 L9402-02 6/9/2005 Zr-95 AcTh-228

-5.00E-01 1.46E+01 1.40E+00 5.70E+00 5.10E+OO 1.80E+01 L WG 13 L9402-02 6/9/2005 Ag-108m -2.50E-01 9.00E-01 3.10E+OO WG 13 L9402-02 6/9/2005 Ag-11O -4.00E-01 1.50E+00 5.40E+00 WG 13 L9402-02 6/9/2005 Ba-140 -2.60E+00 2.00E+00 7.80E+00 WG 13 L9402-02 6/9/2005 Be-7 6.10E+00 9.00E+OO 3.10E+01 WG 13 L9402-02 6/9/2005 Ce-141 1.OOE+OO 1.80E+OO 6.00E+OO WG L9402-02 6/9/2005 Ce-144 1.40E+00 5.50E+00 1.80E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-213-

I Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC NUCLIDE (pCiUL) (pCiIL) (pCi/L)

L TYPi_ STATION LSN DATE Wt 13 L9402-02 6/912005 Co-57 4.90E-01 6.90E-01 2.30E+OO L WC; WC; Wt; 13 13 13 L9402-02 L9402-02 L9402-02 6/9/2005 6/912005 6/912005 Co-58 Co-60 Cr-51

-2.00E+OO 6.OOE-01 6.OOE-01 1.10E+00 1.30E+00 9.60E+00 4.20E+OCI 4.50E+OCI 3.30E+01 1.20E+00 4.40E+00 L WC; 13 L9402-02 6/912005 Cs-1 34 -7.OOE-01 WC; 13 L9402-02 619/2005 Cs-1 37 2.OOE-01 1.OOE+00 3.60E+O0 WC; 13 L9402-02 6/9/2005 Fe-59 -2.70E+00 3.30E+00 1.20E+O',

I ' WC; 13 L9402-02 6/9/2005 GROSS BETA 6.90E+00 1.10E+00 2.80E+0O LB WC; Wt; 13 13 L9402-02 L9402-02 6/9/2005 6/9/2005 H-3 1-131

-2.60E+02 1.80E+00 3.OOE+02 2.20E+00 1.OOE+0O 7.60E+0O WC; 13 L9402-02 6/9/2005 K-40 2.40E+01 1.90E+01 6.50E+OI Wt; 13 L9402-02 6/912005 La-140 -3.OOE+00 2.30E+00 9.OOE+0()

Wt'; 13 L9402-02 6/912005 Mn-54 -2.30E+00 1.10E+00 4.30E+00 WC; 13 L9402-02 6/9/2005 Nb-95 O.OOE+00 1.40E+00 4.90E+00 WG 13 L9402-02 6/9/2005 Ru-1 03 -1.60E+00 1.10E+00 4.OOE+0O WC; 13 L9402-02 619/2005 Ru-106 7.OOE-01 9.40E+00 3.30E+OI W(; 13 L9402-02 6/9/2005 Sb-124 -2.80E+00 3.20E+00 1.20E+OI WG L9402-02 6/9/2005 Sb-125 -2.00E-01 2.80E+00 9.50E+0O L

13 WG 13 L9402-02 6/9/2005 Se-75 2.OOE-01 1.1OE+00 3.90E+0)

WG 13 L9402-02 6/9/2005 Zn-65 -1.90E+00 3.20E+00 1.IOE+OI WC; 13 L9402-02 6/9/2005 Zr-95 1.90E+00 2.IOE+00 7.1OE+0I)

WC; 13 L9881-02 9/14/2005 AcTh-228 2.20E+00 6.OOE+0O 2.IOE+0l W(; 13 L9881-02 9114/2005 Ag-108m 1.90E-01 9.60E-01 3.30E+0O WG 13 L9881-02 9/14/2005 Ag-1IOm 3.70E+00 1.60E+00 5.OOE+O0) 13 L9881-02 9/14/2005 Ba-140 -3.0OE+OO 2.90E+00 1.1OE+Ol 13 L9881-02 9/14/2005 Be-7 2.1OE+01 1.OOE+01 3.40E+01 WG, 13 L9881-02 9/14/2005 Ce-141 2.90E+00 1.80E+00 5.80E+0)

W(, 13 L9881-02 9/14/2005 Ce-144 -1.70E+00 6.00E+OO 2.10E+01 W(, 13 L9881-02 911412005 Co-57 -1.07E+00 7.50E-01 2.60E+0)

W(G 13 L9881-02 9/14/2005 Co-58 4.OOE-01 1.30E+00 4.50E+O0 W(, 13 L9881-02 9/14/2005 Co-60 1.40E+00 1.30E+00 4.20E+0O W(, 13 L9881-02 9/14/2005 Cr-51 9.O0E+OO 1.OOE+01 3.50E+01 W( 13 L9881-02 9/14/2005 Cs-134 1.20E+00 1.40E+00 4.60E+0D W(, 13 L9881-02 9/1412005 Cs-1 37 1.00E+00 1.1OE+oo 3.80E+0D W(, 13 L9881-02 9/14/2005 Fe-59 -3.50E+00 3.50E+00 1.30E+01 WG 13 L9881-02 9/14/2005 GROSS BETA 3.80E+00 1.1OE+00 3.20E+00 W(, 13 L9881-02 9/14/2005 H-3 2.40E+02 4.70E+02 1.40E+O3 WG( 13 L9881-02 9/14/2005 1-131 2.OOE+00 3.20E+00 1.10E+01 W('i 13 L9881-02 9/14/2005 K-40 -3.30E+01 2.40E+01 8.80E+O1 W(, 13 L9881-02 9/14/2005 La-140 -3.50E+00 3.40E+00 1.30E+O1 13 L9881-02 9/14/2005 Mn-54 -4.OOE-01 1.30E+00 4.50E+CO WG 13 L9881-02 9/14/2005 Nb-95 -1.50E+00 1.50E+00 5.40E+CO WG 13 L9881-02 9/14/2005 Ru-1 03 -1.70E+00 1.30E+00 4.80E+CO 13 L9881-02 9114/2005 Ru-1 06 1.60E+01 1.OOE+01 3.30E+C1' W(I WG 13 L9881-02 9/14/2005 Sb-124 O.OOE+OO 3.0OE+OO 1.1OE+CI1 W(I 13 L9881-02 9/14/2005 Sb-125 -5.40E+00 2.90E+00 1.1OE+C(1 WGI 13 L9881-02 9/14/2005 Se-75 -2.1OE+00 1.20E+00 4.40E+COO 13 L9881-02 9/14/2005 Zn-65 -5.OOE-01 2.60E+00 9.50E+CO WGJ 7.8OE+CO 13 L9881-02 9/14/2005 Zr-95 5.OOE-01 2.20E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-214-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCUL) (pCi/L) (rpCi/L)

WG 13 L10269-02 12/7/2005 AcTh-228 2.20E+00 4.50E+00 1.60E+01 WG 13 L10269-02 12/7/2005 Ag-108m -2.1OE+00 1.1OE+00 4.OOE+00 WG 13 L10269-02 12/7/2005 Ag-1I Om 2.70E+00 1.60E+00 5.20E+00 WG 13 L10269-02 12/7/2005 Ba-140 -1.OOE-01 2.60E+00 9.70E+00 WG 13 L10269-02 12/7/2005 Be-7 1.30E+01 1.20E+01 4.OOE+01 WG 13 L10269-02 12/7/2005 Ce-141 6.OOE-01 2.30E+00 7.70E+00 WG 13 L10269-02 12/7/2005 Ce-144 -5.80E+00 7.50E+00 2.60E+01 WG 13 L10269-02 12/7/2005 Co-57 1.40E-01 9.50E-01 3.20E+00 WG 13 L10269-02 12/7/2005 Co-58 -4.OOE-01 1.30E+00 4.70E+00 WG 13 L10269-02 12/7/2005 Co-60 -4.OOE-01 1.1OE+00 4.30E+00 WG 13 L10269-02 12/7/2005 Cr-51 1.70E+01 1.40E+01 4.50E+01 WG 13 L10269-02 12/7/2005 Cs-I 34 -9.OOE-01 1.40E+00 5.20E+00 WG 13 L10269-02 12/7/2005 Cs-137 2.OOE+OO 1.40E+00 4.70E+00 WG 13 L10269-02 12/7/2005 Fe-59 -1.70E+00 3.20E+00 1.20E+01 WG 13 LI 0269-02 12/7/2005 GROSS BETA 1.44E+00 9.30E-01 3.0OE+OO WG 13 LI 0269-02 12/7/2005 H-3 6.20E+02 5.OOE+02 1.50E+03 WG 13 L10269-02 12/7/2005 1-131 7.OOE-01 3.80E+00 1.30E+01 WG 13 L10269-02 12/7/2005 K-40 6.OOE+00 2.OOE+01 6.80E+01 WG 13 L10269-02 12/7/2005 La-140 -1.OOE-01 3.OOE+00 1.1OE+01 WG 13 L10269-02 12/7/2005 Mn-54 -6.OOE-01 1.30E+00 4.70E+00 WG 13 L10269-02 12/7/2005 Nb-95 -3.OOE-01 1.70E+00 6.IOE+00 WG WG WG 13 13 13 L10269-02 L10269-02 L10269-02 12/7/2005 12/7/2005 12/7/2005 Ru-103 Ru-106 Sb-124

-1.20E+00

-3.0OE+OO

-7.OOE-01 1.40E+00 1.20E+01 3.60E+00 5.1 OE+OO 4.1OE+01 1.30E+01 L

WG WG WG 13 13 13 LI 0269-02 L10269-02 L10269-02 12/7/2005 12/7/2005 12/7/2005 Sb-I125 Se-75 Zn-65

-2.50E+00 2.90E+00 1.80E+00 3.40E+00 1.50E+00 5.00E+OO 1.20E+01 5.1 OE+OO 1.70E+01 L

WG 13 L10269-02 12/7/2005 Zr-95 -1.60E+00 2.40E+00 8.90E+00 L

LI U

L L

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-215-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC SAMPLE STATION LSN DATE NUCLIDE (pCQI (pCi/L) (pCiIL)

L TYPE W'; L8790-01 1/26/2005 AcTh-228 -6.OOE-01 4.40E+O0 1.60E+OI W'; L8790-01 1/26/2005 Ag-1i08m 1.OOE-O1 1.1OE+00 3.90E+0O W'; L8790-01 1/26/2005 Ag-11Om 8.00E-01 1.40E+00 5.20E+0O W'; L8790-01 1/26/2005 Ba-140 2.70E+00 2.OOE+OO 6.70E+0O L8790-01 1/26/2005 Be-7 -3.90E+00 8.90E+00 3.40E+Ol L W';

W';

L8790-01 L8790-01 1/26/2005 1/26/2005 Ce-141 Ce-144

-2.30E+00

-5.OOE-01 2.OOE+OO 7.60E+00 7.40E+0) 2.70E+Ol L8790-01 1/26/2005 Co-57 5.OOE-01 1.OOE+OO 3.40E+0O)

U W'; L8790-01 L8790-01 1/26/2005 1/26/2005 Co-58 Co-60

-3.OOE-01

-6.OOE-01 1.1OE+00 1.30E+O0 4.30E+0O 5.30E+0)

W'; L8790-01 1/26/2005 Cr-51 -6.OOE+00 1.1OE+01 4.OOE+0 I U. W';

W';

L8790-01 L8790-01 L8790-01 1/26/2005 1/26/2005 1126/2005 Cs-134 Cs-1 37 Fe-59

-1.OOE+OO 1.50E+00 3.90E+00 1.10E+0O 1.30E+00 3.90E+00 4.60E+0')

4.40E+0I) 1.40E+O1 W'; L8790-01 1/26/2005 1-131 2.70E+00 2.20E+00 7.50E+0I)

W'; L8790-01 1/26/2005 K-40 2.29E+02 3.20E+01 7.20E+Ol W'; L8790-01 1/26/2005 La-140 3.1 OE+O0 2.30E+00 7.70E+0')

W'; L8790-01 1/26/2005 Mn-54 2.30E+00 1.20E+00 4.OOE+O)

W'; L8790-01 1/26/2005 Nb-95 -1.70E+00 1.40E+0O 5.50E+O)

W'; L8790-01 1/26/2005 Ru-1 03 8.OOE-01 1.20E+00 4.10E+03 W'; L8790-01 1/26/2005 Ru-1 06 -1.1 OE+01 1.20E+01 4.50E+01 W';

W'; L8790-01 1/26/2005 Sb-124 O.OOE+O0 2.70E+00 1.IOE+01 W'; L8790-01 1/26/2005 Sb-125 2.70E+00 3.20E+00 1.1OE+01 W'; -2.40E+00 1.60E+00 6.OOE+0D W'; L8790-01 1/26/2005 Se-75 W';

W'; L8790-01 1/26/2005 Zn-65 -1.40E+00 2.60E+00 1.OOE+01 W'; L8790-01 1/26/2005 Zr-95 1.60E+00 2.20E+00 7.60E+00 W'; L8897-01 2/24/2005 AcTh-228 -4.30E+00 5.1OE+OO 2.20E+01 W:;S 1.20E+00 4.60E+00 L8897-01 2/24/2005 Ag-108m -2.OOE-01 WC; W'; L8897-01 2/24/2005 Ag-1 Om 6.OOE-01 2.OOE+OO 7.60E+00 WC; L8897-01 2/24/2005 Ba-140 O.OOE+OO 2.90E+0O 1.20E+01 WC; W'; L8897-01 2/24/2005 Be-7 -2.OOE+00 1.30E+01 5.1OE+01 W'; L8897-01 2/24/2005 Ce-141 2.1OE+O0 2.70E+OO 9.1 OE+00 L8897-01 2/24/2005 Ce-1 44 4.90E+00 8.30E+00 2.90E+01 L8897-01 2/24/2005 Co-57 -6.1 OE-01 9.60E-01 3.60E+O0 L8897-01 2/24/2005 Co-58 1.60E+00 1.40E+00 4.80E+00 W'; L8897-01 2/24/2005 Co-60 2.60E+00 2.20E+00 7.40E+00 W'; L8897-01 2/24/2005 Cr-51 2.90E+01 1.50E+01 4.70E+01 W'; L8897-01 2/24/2005 Cs-1 34 1.50E+00 I.80E+00 6.30E+CO W'; L8897-01 2/24/2005 Cs-137 O.OOE+O0 1.60E+00 6.1OE+CO WS; L8897-01 2/24/2005 Fe-59 2.80E+00 5.70E+00 2.1 OE+C1 W'; L8897-01 212412005 1-131 -1.1OE+OO 3.60E+00 1.30E+01 W'; L8897-01 2/24/2005 K-40 2.88E+02 4.40E+01 9.10E+C11 W'; L8897-01 2/24/2005 La-140 O.OOE+OO 3.40E+00 1.40E+CI1 L8897-01 2/24/2005 Mn-54 1.8OE+OO 1.30E+00 4.50E+(O0 L8897-01 2/24/2005 Nb-95 5.1OE+00 2.OOE+OO 5.60E+IOO L8897-01 2/24/2005 Ru-103 -2.70E+00 1.90E+00 7.70E+IOO L8897-01 2/24/2005 Ru-106 O.OOE+O0 1.50E+01 5.70E+t1 L8897-01 2/24/2005 Sb-1 24 O.OOE+O0 4.30E+00 1.80E+01I L8897-01 2/24/2005 Sb-125 -1.30E+00 4.40E+00 1.70E+01

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-216-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 `

SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

WS L8897-01 2/24/2005 Se-75 -1.10E+00 1.80E+00 6.70E+00 WS L8897-01 2/24/2005 Zn-65 -9.OOE-01 3.70E+00 1.50E+01 WS L8897-01 2/24/2005 Zr-95 9.OOE-01 3.1 OE+00 1.20E+01 WS L9016-01 3/22/2005 AcTh-228 1.OOE+00 3.1 OE+O0 1.1OE+01 6.30E-01 WS WS WS L9016-01 L9016-01 L9016-01 3/22/2005 3/22/2005 3/22/2005 Ag-108m Ag-110m Ba-140

-1.06E+00

-1.20E+00

-2.70E+00 1.20E+00 1.90E+00 2.30E+00 4.40E+00 7.40E+00 L

WS L9016-01 3/22/2005 Be-7 1.50E+01 7.20E+00 2.30E+01 WS L9016-01 3/22/2005 Ce-141 -1.50E+00 1.50E+00 5.20E+00 WS L9016-01 3/22/2005 Ce-144 -9.40E+00 4.80E+00 1.70E+01 WS L9016-01 3/22/2005 Co-57 -2.40E-01 6.1 OE-01 2.1OE+00 WS L9016-01 3/22/2005 Co-58 8.40E-01 7.80E-01 2.60E+00 WS L9016-01 3/22/2005 Co-60 3.60E-01 8.1 OE-01 2.90E+00 WS L9016-01 3/22/2005 Cr-51 6.60E+00 8.60E+00 2.90E+01 WS L9016-01 3/22/2005 Cs-1 34 -7.30E-01 7.40E-01 2.80E+00 WS L9016-01 3/22/2005 Cs-137 -3.20E-01 8.00E-01 2.90E+00 WS L9016-01 3/22/2005 Fe-59 2.20E+00 2.40E+00 8.20E+00 WS L9016-01 3/22/2005 1-131 2.40E+00 3.OOE+00 1.OOE+01 WS L9016-01 3/22/2005 K-40 3.02E+02 2.OOE+01 3.90E+01 WS L9016-01 3/22/2005 La-140 -3.20E+00 2.20E+00 8.60E+00 Ws L9016-01 3/22/2005 Mn-54 -1.13E+00 8.00E-01 3.OOE+00 WS WS L9016-01 L9016-01 3/22/2005 3/22/2005 Nb-95 Ru-103 Ru-106

-4.40E-01

-1.93E+00 7.70E+00 8.80E-01 8.60E-01 7.20E+00 3.20E+00 3.30E+00 2.40E+01 L

WS L9016-01 3/22/2005 WS WS WS L9016-01 L9016-01 L9016-01 3/22/2005 3/22/2005 3/22/2005 Sb-124 Sb-125 Se-75 O.OOE+00 1.OOE-01

-5.OOE-01 2.OOE+00 1.9OE+00 1.OOE+00 7.40E+00 6.70E+00 3.60E+O0 U

WS L9016-01 3/22/2005 Zn-65 2.30E+00 1.60E+00 5.40E+00 WS L9016-01 3/22/2005 Zr-95 -2.40E+00 1.30E+00 5.OOE+00 WS L9221-01 4/26/2005 AcTh-228 -6.OOE-01 5.30E+00 2.OOE+01 WS L9221-01 4/26/2005 Ag-108m -2.OOE-01 1.10E+00 4.OOE+00 WS L9221-01 4/26/2005 Ag-110m 1.50E+00 2.OOE+00 7.20E+00 WS L9221-01 4/26/2005 Ba-140 -2.40E+O0 3.1 OE+00 1.30E+01 WS L9221-01 4/26/2005 Be-7 4.OOE+00 1.20E+01 4.40E+01 WS L9221-01 4/26/2005 Ce-141 6.OOE-01 2.30E+00 8.20E+00 WS L9221-01 4/26/2005 Ce-144 -8.OOE-01 8.40E+00 3.OOE+01 WS L9221-01 4/26/2005 Co-57 1.40E+00 1.1 OE+00 3.60E+00 WS L9221-01 4/26/2005 Co-58 -9.OOE-01 1.40E+00 5.60E+00 WS L9221-01 4/26/2005 Co-60 8.OOE-01 1.60E+00 6.1 OE+00 WS L9221-01 4/26/2005 Cr-51 *5.OOE+00 1.40E+01 5.20E+01 WS L9221-01 4/26/2005 Cs-1 34 -7.OOE-01 1.60E+00 6.40E+00 WS L9221-01 4/26/2005 Cs-137 -1.30E+O0 1.60E+00 6.30E+O0 WS L9221-01 4/26/2005 Fe-59 7.1OE+00 5.50E+00 1.90E+01 WS L9221-01 4/26/2005 1-131 -1.50E+O0 3.80E+O0 1.40E+01 WS L9221-01 4/26/2005 K-40 3.12E+02 3.90E+01 7.40E+01 WS L9221 -01 4/26/2005 La-140 -2.70E+00 3.50E+00 1.50E+01 WS L9221-01 4/26/2005 Mn-54 -2.70E+00 1.40E+00 6.OOE+00 WS L9221-01 4/26/2005 Nb-95 -1.80E+00 1.60E+00 6.70E+00 Ws L9221-01 4/26/2005 Ru-103 9.OOE-01 1.50E+00 5.20E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-217-

4-L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC L SAMPLE TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

W'; I L9221-01 4/26/2005 Ru-106 -1.40E+01 1.30E+01 5.1OE+OI IW I L9221-01 4/26/2005 Sb-124 -1.IOE+00 3.60E+00 1.50E+O t i W'; 1 L9221-01 4/26/2005 Sb-125 -3.60E+00 3.50E+00 1.60E+00 1.40E+O I 5.80E+OO)

W 1 L9221-01 4/26/2005 Se-75 6.00E-01 4.00E+00 2.60E+00 8.70E+01)

U W';

IC; W';

I 1

I L9221-01 L9221-01 L9364-01 4/26/2005 4/26/2005 5/26/2005 Zn-65 Zr-95 AcTh-228 1.30E+00

-7.30E+00 3.OOE+00 6.30E+00 1.10E+01 2.40E+O I W'; I 1 L9364-01 5/26/2005 Ag-108m -1.80E+00 1.40E+00 5.30E+O)

LWB I 1

L9364-01 L9364-01 5/26/2005 5/26/2005 Ag-1Im Ba-140

-2.80E+00 6.00E-01 2.70E+00 3.1OE+00 I.OOE+0l 1.20E+01 W'S W'S 1 L9364-01 5/26/2005 Be-7 -2.OOE+01 1.60E+01 5.80E+01 WII 1 L9364-01 5/26/2005 Ce-141 -4.40E+00 2.90E+00 1.10E+01 W'; 1 L9364-01 5/26/2005 Ce-144 -3.70E+00 9.70E+00 3.40E+01 W'; I L9364-01 5/26/2005 Co-57 -3.OOE-01 1.30E+00 4.40E+0)

I L9364-01 5/26/2005 Co-58 -2.30E+00 1.90E+00 7.40E+03 U! Wl WS W'S W';

I 1

L9364-01 L9364-01 5/26/2005 5/26/2005 Co-60 Cr-51

-6.OOE-01

-8.OOE+00 2.OOE+00 1.70E+01 7.50E+OD 6.10E+01 W'S I L9364-01 5/26/2005 Cs-134 2.1OE+00 2.OOE+00 6.90E+00 W

W';

1 1

L9364-01 L9364-01 5/26/2005 5/26/2005 Cs-137 Fe-59 3.OOE-01 1.60E+00 1.60E+00 4.80E+00 5.80E+00 1.80E+01 W';

W 1 L9364-01 5/26/2005 1-131 -1.80E+00 4.OOE+00 1.50E+01 U WS W';

1 I

L9364-01 L9364-01 5/26/2005 5/26/2005 K-40 La-140 2.24E+02 7.OOE-01 3.60E+01 3.60E+00 1.70E+00 9.IOE+01 1.30E+01 5.60E+OO 5/26/2005 Mn-54 2.40E+00 U W1 W';

WS 1 I

L9364-01 L9364-01 L9364-01 5/26/2005 5/26/2005 Nb-95 Ru-1 03 1.00E+00

-3.30E+00 3.40E+00 2.10E+00 1.20E+01 7.90E+00 WS 1 L9364-01 5/26/2005 Ru-106 -1.70E+01 1.50E+01 5.80E+01 L9364-01 5/26/2005 Sb-124 2.50E+00 4.1OE+00 1.50E+01 U W';

WS W:;

1 1

1 L9364-01 L9364-01 5/26/2005 5/26/2005 Sb-125 Se-75

-4.OOE-01

-2.OOE-01 4.40E+00 2.1 OE+00 1.60E+01 7.40E+O0 I L9364-01 5/26/2005 Zn-65 1.08E+01 8.20E+00 2.70E+01 U WS WS W!i I

I L9364-01 L9464-01 5/26/2005 6/20/2005 Zr-95 AcTh-228 5.50E+00 1.90E+00 3.20E+00 5.OOE+00 1.OOE+01 1.70E+01 W:; 1 L9464-01 6/20/2005 Ag-108m -1.05E+oo 7.90E-01 2.80E+OO WS I L9464-01 6/20/2005 Ag-110m O.OOE+00 1AO.E+00 4.90E+OO W:; 1 L9464-01 6/20/2005 Ba-140 3.30E+00 1.70E+00 5.60E+C0O W:; I L9464-01 6/20/2005 Be-7 -7.60E+00 8.OOE+00 2.80E+('1 j W:; I L9464-01 6/20/2005 Ce-141 4.OOE-01 1.40E+00 4.80E+OO WSi I L9464-01 6/20/2005 Ce-144 -1.20E+00 4.70E+00 1.60E+CI1 W:3 1 L9464-01 6/20/2005 Co-57 -3.10E-01 6.20E-01 2.10E+IOO W'i 1 L9464-01 6/20/2005 Co-58 -3.OOE-01 1.10E+00 3.70E+O10 WS 1 L9464-01 6/20/2005 Co-60 -7.OOE-01 1.1OE+00 4.IOE+O10 W'i 1 L9464-01 6/20/2005 Cr-51 -6.00E-01 7.80E+00 2.70E+01 W'i 1 L9464-01 6/20/2005 Cs-134 -7.00E-01 1.20E+00 4.10E+(O0 WS 1 L9464-01 6/20/2005 Cs-137 3.20E-01 9.80E-01 3.40E+(10 WS 1 L9464-01 6/20/2005 Fe-59 3.20E+00 3.10E+00 1.00E+(1 WS I L9464-01 6/20/2005 1-131 -1.OOE-01 1.60E+00 5.50E+O0 W. 1 L9464-01 6/20/2005 K-40 3.12E+02 2.50E+01 5.80E+01 IWB, I L9464-01 6/20/2005 La-140 3.80E+00 2.OOE+00 6.50E+(IO

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-218-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 MDC L

SAMPLE END CONC STD.DEV.

TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCilL)

WS L9464-01 6/20/2005 Mn-54 6.OOE-01

-2.OOE-01 1.OOE+00 1.20E+00 3.50E+00 4.OOE+00 L

WS L9464-01 6120/2005 Nb-95 WS L9464-01 6/20/2005 Ru-1 03 1.02E+00 9.90E-01 3.30E+00 WS L9464-01 6/20/2005 Ru-106 -3.80E+00 8.30E+00 2.90E+01 i Ws L9464-01 6/20/2005 Sb-124 2.30E+00 2.50E+00 8.40E+00 WS L9464-01 6/20/2005 Sb-125 1.OOE-01 2.50E+00 8.50E+00 Li WS L9464-01 6/20/2005 Se-75 3.OOE-01 I.OOE+00 3.40E+00 WS L9464-01 6/20/2005 Zn-65 1.80E+00 2.30E+00 7.90E+00 WS L9464-01 6/20/2005 Zr-95 2.40E+00 1.70E+00 5.80E+00 L9673-01 7/27/2005 AcTh-228 -2.40E+00 4.50E+00 1.60E+01 I

WS WS L9673-01 7/27/2005 Ag-108m -4.20E-01 9.90E-01 3.50E+00 WS L9673-01 7/27/2005 Ag-1 Om O.OOE+0O 1.60E+00 5.60E+00 WS L9673-01 7/27/2005 Ba-140 2.OOE+00 1.80E+00 6.30E+00 WS L9673-01 7/27/2005 Be-7 -2.20E+00 9.80E+00 3.50E+01 WS WS WS L9673-01 L9673-01 L9673-01 7/27/2005 7/27/2005 7/27/2005 Ce-141 Ce-144 Co-57 1.70E+00 8.40E+00

-2.30E-01 1.90E+00 6.50E+00 8.30E-01 6.50E+00 2.20E+01 2.90E+00 Li WS L9673-01 7/27/2005 Co-58 -2.30E+00 1.20E+00 4.50E+00 WS L9673-01 7/27/2005 Co-60 1.70E+00 1.30E+00 4.40E+00 WS Ws WS L9673-01 L9673-01 L9673-01 7/27/2005 7/27/2005 7/27/2005 Cr-51 Cs-134 Cs-137 8.OOE+00 3.40E+00 1.40E+00 1.1OE+01 1.30E+00 1.1OE+00 3.60E+01 4.OOE+00 3.70E+00 L

WS L9673-01 7/27/2005 Fe-59 6.90E+00 3.60E+00 1.10E+01 WS L9673-01 7/27/2005 1-131 1.50E+00 2.20E+00 7.40E+00 L9673-01 K-40 2.95E+02 2.80E+01 6.40E+01 WS WS L9673-01 7/27/2005 7/27/2005 La-140 2.30E+00

-2.40E+00 2.1 OE+00 1.1OE+00 7.20E+00 4.30E+00 E.

WS L9673-01 7/27/2005 Mn-54 L9673-01 Nb-95 6.00E-01 1.50E+00 5.30E+00 WS WS WS L9673-01 L9673-01 7/27/2005 7/27/2005 7/27/2005 Ru-103 Ru-1 06

-2.1OE+00

-1 .40E+01 1.40E+00 1.1OE+01 5.OOE+00 4.1OE+01 Li WS L9673-01 7/27/2005 Sb-1 24 4.OOE-01 2.80E+00 1.OOE+01 WS WS L9673-01 L9673-01 7/27/2005 7/27/2005 Sb-125 Se-75

-3.40E+00 1.20E+00 3.OOE+00 1.40E+00 1.10E+01 4.70E+00 Ei WS L9673-01 7/27/2005 Zn-65 7.60E+00 2.80E+00 8.80E+00 WS WS WS L9673-01 L9781-01 L9781-01 7/27/2005 8/22/2005 8/22/2005 Zr-95 AcTh-228 Ag-108m 4.60E+00 1.30E+00 3.80E-01 1.90E+00 4.20E+00 9.40E-01 6.1OE+00 1.50E+01 3.20E+00 L

1.60E+00 5.80E+00 WS WS WS L9781-01 L9781-01 L9781-01 8/22/2005 8/22/2005 8/22/2005 Ag-110m Ba-140 Be-7

-7.00E-01

-2.00E+OO 7.OOE+00 2.40E+00 I.OOE+01 9.20E+00 3.50E+01 Li WS L9781-01 8/22/2005 Ce-141 9.OOE-01 2.30E+00 7.80E+00 WS WS L9781-01 L9781-01 8/22/2005 8/22/2005 Ce-144 Co-57

-2.1OE+00 1.01E+00 6.20E+00 8.OOE-01 2.IOE+0i 2.70E+00 Li WS L9781-01 8/22/2005 Co-58 -1.60E+00 1.20E+00 4.60E+00 WS WS L9781-01 L9781-01 L9781 -01 8/22/2005 8/22/2005 8/22/2005 Co-60 Cr-51 Cs-1 34 1.70E+00 1.20E+01

-2.OOE-01 1.30E+00 1.20E+01 1.20E+00 4.30E+00 4.1OE+01 4.20E+00 Li WS WS L9781 -01 8/22/2005 Cs-1 37 -2.OOE-01 1.20E+00 4.1OE+00 WS L9781-01 8/22/2005 Fe-59 -2.00E-01 3.30E+00 1.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-219-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC SAMPLE L TYPE STATION LSN DATE NUCLIDE 1-131 (pCi/L) 4.60E+00 (pCiUL) 4.40E+00 (pCi/L) 1.50E+O I 1 L9781-01 8/22/2005 2.60E+01 6.20E+O I L 1 I

1 L9781-01 8/22/2005 L9781-01 8/22/2005 L9781-01 8/22/2005 K-40 La-140 Mn-54 2.65E+02

-2.30E+00

-8.OOE-01 2.70E+00 1.1OE+00 1.1OE+01 3.90E+O) wIS Nb-95 7.OOE-01 1.50E+00 5.1OE+0O I L9781-01 8/22/2005 I L9781-01 8/22/2005 Ru-1 03 -1.10E+00 1.50E+00 5.20E+0)

I L9781 -01 8/22/2005 Ru-106 s.OOE+00 1.OOE+01 3.50E+01 I L9781 -01 8/22/2005 Sb-124 2.60E+00 2.60E+00 8.90E+03 L wIS I

I L9781 -01 8/22/2005 L9781-01 8/22/2005 Sb-1 25 Se-75

-1.OOE+00

-4.OOE-01 2.90E+00 1.50E+00 2.60E+00 1.OOE+01 5.1 OE+0O 1.OOE+01 I L9781-01 8/22/2005 Zn-65 -4.80E+00 1 L9781-01 8/22/2005 Zr-95 -1.90E+00 2.20E+00 7.90E+00 I L9920-01 9/19/2005 AcTh-228 -1.50E+00 7.40E+00 2.70E+01 I L9920-01 9/19/2005 Ag-108m O.OOE+00 1.80E+00 6.50E+00 1 L9920-01 9/19/2005 Ag-1I Om 2.OOE+O0 2.50E+00 8.70E+0O wIS I L9920-01 9/19/2005 Ba-140 -4.OOE+O0 2.70E+00 1.20E+01 L wIS I

I L9920-01 9/19/2005 L9920-01 9/19/2005 Be-7 Ce-141 2.50E+01 3.90E+00 1.60E+01 3.1OE+O0 5.40E+01 1.OOE+01 U

L w IC I I

L9920-01 9/19/2005 L9920-01 9/19/2005 Ce-144 Co-57

-1.90E+01 1.50E+00 1.OOE+01 1 .40E+00 3.90E+01 4.50E+00 I L9920-01 9/19/2005 Co-58 -1.50E+00 2.OOE+00 7.60E+00 I L9920-01 9/19/2005 Co-60 -2.80E+00 1.80E+00 7.80E+00 w IC L9920-01 9/19/2005 Cr-51 -4.70E+01 2.OOE+01 7.60E+01 I

I L9920-01 9/19/2005 Cs-1 34 1.90E+00 2.30E+00 8.10E+00 Cs-1 37 -1.10E+00 1 .90E+00 7.20E+OO L I I

I L9920-01 9/19/2005 L9920-01 9/19/2005 L9920-01 9/19/2005 Fe-59 1-131

-s.50E+00

-4.OOE-01 4.80E+00 3.60E+00 2.OOE+01 1.30E+01 I L9920-01 9/19/2005 K-40 2.56E+02 4.30E+01 1.1OE+C2 L I I

L9920-01 9/19/2005 L9920-01 9/19/2005 La-140 Mn-54

-4.60E+00

-4.OOE+00 3.1 OE+00 1.70E+00 1.40E+C1 7AOE+CO I L9920-01 9/19/2005 Nb-95 4.70E+00 2.30E+00 7.20E+CO U WS 1

I 1

L9920-01 9/19/2005 L9920-01 9/19/2005 L9920-01 9/19/2005 Ru-103 Ru-106 Sb-124

-1.40E+00

-2.40E+01 O.OOE+00 2.20E+00 2.OOE+01 4.20E+00 8.30E+CO 7.5OE+CI1 1.70E+CI WIS Sb-125 -5.90E+00 4.70E+00 1.80E+C 1 I L9920-01 9/19/2005 wIS 1 L9920-01 9/19/2005 Se-75 3.70E+00 2.50E+00 8.20E+C0O 1 L9920-01 9/19/2005 Zn-65 5.20E+00 4.20E+00 1.40E+C1 1 L9920-01 9/19/2005 Zr-95 2.60E+00 3.40E+00 1.20E+C'1 I L10148-0110/27/2005 AcTh-228 -9.OOE-01 4.1 OE+00 1.40E+CI1 1 L10148-0110/27/2005 Ag-108m -6.40E-01 8.OOE-01 2.80E+00 I L10148-01 10/27/2005 Ag-I1 Om 1.20E+00 1.40E+00 4.80E+(O0 I L10148-01 10/27/2005 Ba-140 -2.70E+00 2.1 OE+00 8.20E+(t0 I L10148-0110/27/2005 Be-7 -8.80E+00 8.50E+00 3.OOE+01 I L1 0148-0110/27/2005 Ce-141 2.OOE-01 1.90E+00 6.30E+tl0 I L10148-0110/27/2005 Ce-1 44 2.80E+00 5.90E+00 2.OOE+01 I L10148-0110/27/2005 Co-57 3.00E-01 7.60E-01 2.60E+tl0 1 L10148-0110/27/2005 Co-58 -1 .30E+00 1.1OE+00 4.20E+O10 1 L1 0148-0110/27/2005 Co-60 1.OOE-01 1.1OE+00 3.90E+(O0 1 L10148-0110/27/2005 Cr-51 O.OOE+OO 1.1OE+01 3.70E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-220-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 J SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L) J WS 1 L10148-0110/27/2005 Cs-134 7.00E-01 1.20E+00 4.00E+OO WS 1 L10148-0110/27/2005 Cs-137 -6.80E-01 9.80E-01 3.50E+0O WS 1 L10148-0110/27/2005 Fe-59 -8.OOE-01 2.40E+00 8.60E+00 ,,

WS 1 L10148-0110/27/2005 1-131 2.80E+00 3.OOE+00 1.00E+01 WS WS WS 1

1 1

L10148-0110/27/2005 L10148-0110/27/2005 L10148-0110/27/2005 K-40 La-140 Mn-54 3.10E+02

-3.IOE+00

-1.40E+00 2.50E+01 2.50E+00 1.IOE+00 5.60E+01 9.40E+O0 3.80E+00 K

WS 1 L10148-0110/27/2005 Nb-95 O.OOE+00 1.40E+00 4.90E+00 WS 1 L10148-0110/27/2005 Ru-103 -2.50E+00 1.30E+00 4.60E+00 WS 1 L10148-0110/27/2005 Ru-106 7.OOE+00 1.00E+01 3.50E+01 WS I L10148-0110/27/2005 Sb-124 -1.90E+00 2.50E+00 9.40E+00 WS 1 L10148-0110/27/2005 Sb-125 O.OOE+O0 2.50E+00 8.70E+00 WS 1 L10148-0110/27/2005 Se-75 I.00E+O0 1.30E+00 4.50E+00 WS 1 L10148-0110127/2005 Zn-65 -4.80E+00 2.50E+00 9.30E+00 WS 1 L10148-0110/27/2005 Zr-95 -8.00E-01 2.00E+00 7.00E+00 WS I L10205-0111/21/2005 AcTh-228 -7.00E-01 6.40E+00 2.30E+01 J WS 1 L10205-0111/21/2005 Ag-108m -1.80E+00 1.30E+00 4.80E+OO WS 1 L10205-0111/21/2005 Ag-110m -2.30E+00 2.20E+00 8.40E+00 WS 1 L10205-0111/21/2005 Ba-140 4.20E+00 2.80E+00 9.IOE+OO J WS 1 L10205-0111/21/2005 Be-7 -6.OOE+00 1.30E+01 4.50E+01 WS I L10205-0111/21/2005 Ce-141 5.90E+00 2.40E+00 7.60E+OO WS 1 L10205-0111/21/2005 Ce-144 -4.20E+00 8.30E+00 2.90E+01 WS 1 L10205-0111/21/2005 Co-57 1.20E+00 1.1OE+00 3.60E+00 WS 1 L10205-0111/21/2005 Co-58 5.OOE-01 1.50E+00 5.40E+00 WS 1 L10205-0111/21/2005 Co-60 1.30E+00 1.60E+00 5.60E+00 WS 1 L10205-0111/21/2005 Cr-51 -9.OOE+00 1.40E+01 5.OOE+O1 L WS 1 L10205-0111/21/2005 Cs-134 4.OOE-01 1.60E+00 5.80E+00 WS WS WS 1

I I

L10205-0111/21/2005 L10205-0111/21/2005 L10205-0111/21/2005 Cs-137 Fe-59 1-131 1.10E+00

-5.OOE-01

-5.10E+00 1.70E+00 3.60E+00 3.40E+00 5.80E+O0 1.30E+01 1.20E+01 WS WS WS 1

1 1

L10205-0111/21/2005 L10205-0111/21/2005 L10205-0111/21/2005 K-40 La-140 Mn-54 3.06E+02 4.80E+00

-1.40E+00 3.90E+01 3.20E+00 1.60E+00 9.40E+01 1.OOE+01 6.OOE+OO K

WS 1 L10205-0111/21/2005 Nb-95 -2.1OE+00 1.80E+00 6.90E+00 WS WS WS 1

I 1

L10205-0111/21/2005 L10205-0111/21/2005 L10205-0111/21/2005 Ru-103 Ru-106 Sb-124

-8.OOE-01 2.OOE+00

-2.90E+00 I.70E+00 1.50E+01 3.90E+00 6.20E+00 5.40E+01 1.60E+01 K

WS WS WS 1

I 1

L10205-0111/21/2005 LI 0205-0111/21/2005 L10205-0111/21/2005 Sb-125 Se-75 Zn-65 1.40E+00

-1.40E+00 1.13E+01 4.10E+00 2.00E+00 6.10E+00 I.40E+01 7.OOE+OO 2.00E+01 U

WS 1 L10205-0111/21/2005 Zr-95 -9.90E+00 2.80E+00 1.20E+01 WS 1 L10354-0112/28/2005 AcTh-228 -8.50E+00 7.50E+00 4.50E+01 LJ WS 1 L10354-0112/28/2005 Ag-108m -1.20E+00 1.70E+00 6.20E+00 WS 1 L10354-0112/28/2005 Ag-l1Om 3.OOE+00 3.OOE+00 1.OOE+01 WS I L10354-0112/28/2005 Ba-140 -1.80E+00 3.00E+00 1.20E+01 WS 1 L10354-0112/28/2005 Be-7 1.IOE+01 1.60E+01 5.50E+01 L WS 1 L10354-0112/28/2005 Ce-141 -3.50E+00 3.OOE+00 1.10E+01 WS 1 L10354-0112/28/2005 Ce-144 -1.20E+01 1.10E+01 4.OOE+01 I WS 1 L10354-0112/28/2005 Co-57 1.90E+00 1.40E+00 4.60E+00 L

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement 4

-221-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC rU TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

L 1 LI 0354-0112/28/2005 5Co-58 2.20E+00 2.1 OE+00 7.OOE+00 2.1 OE+00 8.30E+00 L W'S 1 1

1 L10354-0112/28/2005 5Co-60 L10354-0112/28/2005 5Cr-51 L10354-0112/28/2005 5Cs-1 34

-2.1 OE+00 1.60E+01 2.1OE+00 1.60E+01 2.20E+00 5.40E+O0I 7.50E+0()

W'; -1.50E+00 1.70E+00 6.70E+0O 1 LI 0354-0112/28/2005 ;Cs-137 L W';

W';

WS 1

1 LI 0354-0112/28/2005 iFe-59 LI 0354-0112/28/2005 ;1-131

-3.50E+00

-4.50E+00 4.20E+00 3.30E+00 1.60E+OI 1.30E+O0I W'S 1 LI 0354-0112/28/2005 K-40 2.87E+02 4.60E+01 1.20E+O:'

W'S 1 LI 0354-0112/28/2005 ;La-140 -2.1 OE+00 3.40E+00 1.40E+O0l 1 LI 0354-0112/28/2005 ;Mn-54 -5.OOE-01 2.0OE+0O 7.50E+0O 1 LI 0354-0112/28/2005 ;Nb-95 -5.60E+00 2.50E+00 I.OOE+O0I L W';

W';

1 1

1 L10354-0112/28/2005 Ru-103 L10354-0112/28/2005 ; Ru-1 06 Li 0354-0112/28/2005 ; Sb-124

-5.70E+00 3.20E+01

-3.00E+OO 2.40E+00 1.90E+01 4.90E+00 9.40E+0I) 6.1 OE+O I 2.00E+O I

-5.90E+00 4.90E+00 1.90E+O 1 G W';

W';

1 1

1 LI 0354-0112/28/2005 Sb-125 LI 0354-0112/28/2005 Se-75 L10354-0112/28/2005 Zn-65 3.1 OE+00

-1 .86E+01 2.40E+00 5.80E+00 8.1 OE+O0 2.40E+O I 1 L10354-0112/28/2005 Zr-95 2.40E+00 3.70E+00 1.30E+O I L W';C 1

1 L9105-01 3/22/2005 H-3 L9595-01 6/20/2005 H-3

-2.70E+02

-1.90E+02 3.20E+02 3.70E+02 1.1OE+0:3 1.20E+03 1 L10044-01 9/19/2005 H-3 2.90E+02 4.OOE+02 I.30E+0 3 L W.,

W';

51 1 LI 0457-0112/28/2005 H-3 L8790-02 1/27/2005 AcTh-228

-2.70E+02

-1.80E+00

-1.28E+00 4.50E+02 3.30E+00 8.80E-01 1 .40E+03 1.30E+01 3.30E+03 51 L8790-02 1/27/2005 Ag-108m W'; 2.OOE-Oi 1.30E+00 4.70E+OD 51 L8790-02 1/27/2005 Ag-1i1m W'; O.OOE+00 1.50E+00 5.90E+OO 51 L8790-02 1/27/2005 Ba-140 51 L8790-02 1/27/2005 Be-7 -6.90E+00 8.90E+00 3.30E+01 WS" -3.OOE-01 1.90E+00 6.70E+OD 51 L8790-02 1/27/2005 Ce-141 51 L8790-02 1/27/2005 Ce-144 -6.1 OE+00 7.20E+00 2.50E+01 51 L8790-02 1127/2005 Co-57 -4.50E-01 8.60E-01 3.OOE+O0 W', -4.OOE-01 1.1OE+00 4.OOE+00 51 L8790-02 1/27/2005 Co-58 W', 7.IOE-01 8.70E-01 3.1 OE+00 51 L8790-02 1/27/2005 Co-60 W'; -I.IOE+01 1.IOE+01 4.O0E+01 51 L8790-02 1/27/2005 Cr-51 W', 7.OOE-01 1.20E+00 4.10E+00 Ws, 51 L8790-02 1/27/2005 Cs-1 34 WS 51 L8790-02 1/27/2005 Cs-1 37 I .OOE-01 I.OOE+OO 3.80E+00 51 L8790-02 1/27/2005 Fe-59 9.OOE-01 2.80E+00 1.OOE+01 51 L8790-02 1/27/2005 1-131 1.80E+00 2.70E+00 9.10E+CO W:, 2.82E+02 2.60E+01 5.00E+I1 WS 51 L8790-02 1/27/2005 K-40 WS 51 L8790-02 1/27/2005 La-140 O.OOE+0O 1.70E+00 6.70E+C O WS 51 L8790-02 1/27/2005 Mn-54 -9.20E-01 9.OOE-01 3.50E+C'0 51 L8790-02 1/27/2005 Nb-95 -1.50E+00 1.1OE+00 4.30E+OO W', I .10E+OO 4.40E+COO WS 51 L8790-02 1/27/2005 Ru-1 03 -1.90E+00 WS 51 L8790-02 1/27/2005 Ru-1 06 -1.IOE+OO 8.90E+00 3.20E+Ci WS 51 L8790-02 1/27/2005 Sb-1 24 -1.1OE+00 2.50E+00 1.OOE+C11 W', 1.60E+00 2.80E+00 9.60E+C(O 51 L8790-02 1/27/2005 Sb-125 W'i5 9.OOE-01 1.30E+OO 4.30E+C'0 51 L8790-02 1/27/2005 Se-75 W',3 4.OOE-01 1.90E+00 6.90E+C(0 WS 51 L8790-02 1/27/2005 Zn-65 WS 51 L8790-02 1/27/2005 Zr-95 -1.90E+00 1.80E+00 7.0OE+COO 51 L8897-02 2/24/2005 AcTh-228 3.OOE-01 5.70E+00 2.20E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-222-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 L SAMPLE END CONC STD.DEV. MDC j I TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

WS 51 L8897-02 2/24/2005 Ag-108m 3.OOE+00 1.40E+00 4.30E+00 WS 51 L8897-02 2/24/2005 Ag-11m -3.40E+00 2.60E+00 1.10E+01 WS 51 L8897-02 2/24/2005 Ba-140 6.50E+00 4.OOE+00 1.30E+01 WS 51 L8897-02 2/24/2005 Be-7 1.60E+01 1.20E+01 4.20E+01 Ce-141 -9.OOE-01 2.70E+00 9.50E+00 WS WS WS 51 51 51 L8897-02 L8897-02 L8897-02 2/24/2005 2/24/2005 2/24/2005 Ce-144 Co-57 7.OOE-01

-8.OOE-01 9.50E+00 1.1OE+00 3.40E+01 4.20E+00 L

WS 51 L8897-02 2/24/2005 Co-58 1.OOE-01 1.50E+0O 5.70E+00 WS 51 L8897-02 2/24/2005 Co-60 5.00E-01 2.OOE+00 7.80E+00 WS 51 L8897-02 2/24/2005 Cr-51 -2.OOE+00 1.60E+01 6.OOE+01 Ws 51 L8897-02 2/24/2005 Cs-134 2.OOE+00 1.70E+00 6.OOE+00 WS 51 L8897-02 2/24/2005 Cs-1 37 -3.10E+00 1.80E+00 7.70E+00 IJ WS 51 L8897-02 2/24/2005 Fe-59 -2.60E+00 5.30E+00 2.20E+01 WS 51 L8897-02 2/24/2005 1-131 -1.60E+00 3.90E+00 1.50E+01 2.91 E+02 4.50E+01 9.20E+01

WS WS WS 51 51 51 L8897-02 L8897-02 L8897-02 2/24/2005 2/24/2005 2/24/2005 K-40 La-140 Mn-54 7.40E+00 1.30E+00 4.60E+0O 1.40E+00 1.50E+01 4.90E+00 L

WS 51 L8897-02 2/24/2005 Nb-95 -2.60E+00 1.70E+00 7.60E+00 Ws 51 L8897-02 2/24/2005 Ru-103 2.30E+00 1.90E+00 6.20E+00 Ws 51 L8897-02 2/24/2005 Ru-106 1.80E+01 1.40E+01 4.70E+01 WS 51 L8897-02 2/24/2005 Sb-124 -1.40E+00 3.OOE+00 1.50E+01 WS WS 51 51 L8897-02 L8897-02 L8897-02 2/24/2005 2/24/2005 2/24/2005 Sb-1 25 Se-75 Zn-65 5.90E+00 3.50E+00 1.70E+00 4.30E+00 1.90E+00 2.90E+00 1.40E+01 6.30E+00 1.10E+01 L

WS 51 WS WS WS 51 51 51 L8897-02 L9016-02 L9016-02 2/24/2005 3/22/2005 3/22/2005 Zr-95 AcTh-228 Ag-108m

-1.60E+00

-5.70E+00 6.OOE-02 2.40E+00 3.20E+00 7.1OE-01 1.OOE+01 1.30E+01 2.50E+00 L

WS 51 L9016-02 3/22/2005 Ag-110m 7.OOE-01 1.10E+00 4.OOE+00 WS 51 L9016-02 3/22/2005 Ba-140 -5.1 OE+00 2.20E+00 9.30E+00 WS 51 L9016-02 3/22/2005 Be-7 -2.00E+00 7.40E+00 2.70E+01 WS 51 L9016-02 3/22/2005 Ce-141 -1.40E+00 1.60E+00 5.50E+00 WS 51 L9016-02 3/22/2005 Ce-144 3.50E+00 4.40E+00 1.50E+01 WS 51 L9016-02 3/22/2005 Co-57 -6.40E-01 5.30E-01 1.90E+00 WS 51 L9016-02 3/22/2005 Co-58 9.30E-01 8.60E-01 2.90E+00 WS 51 L9016-02 3/22/2005 Co-60 1.30E-01 8.30E-01 3.OOE+00 WS 51 L9016-02 3/22/2005 Cr-51 1.50E+01 8.20E+00 2.70E+01 WS 51 L9016-02 3/22/2005 Cs-134 1.76E+00 9.70E-01 3.20E+00 WS 51 L9016-02 3/22/2005 Cs-137 4.40E-01 8.OOE-01 2.80E+00 WS 51 L9016-02 3/22/2005 Fe-59 -7.OOE-01 3.20E+00 1.20E+01 WS 51 L9016-02 3/22/2005 1-131 -1.OOE+00 2.70E+00 9.60E+00 WS 51 L9016-02 3/22/2005 K-40 2.98E+02 2.30E+01 4.40E+01 WS 51 L9016-02 3/22/2005 La-140 -5.80E+00 2.50E+00 1.1OE+01 WS 51 L9016-02 3/22/2005 Mn-54 -7.60E-01 8.60E-01 3.20E+O0 WS 51 L9016-02 3/22/2005 Nb-95 3.OOE-01 1.OOE+00 3.70E+00 WS 51 L9016-02 3/22/2005 Ru-103 -1.90E+00 1.10E+00 4.OOE+00 WS 51 L9016-02 3/22/2005 Ru-106 1.50E+00 7.OOE+00 2.50E+01 WS 51 L9016-02 3/22/2005 Sb-124 -5.90E+00 2.50E+00 1.1OE+01 WS 51 L9016-02 3/22/2005 Sb-125 9.OOE-01 2.20E+00 7.70E+00 WS 51 L9016-02 3/22/2005 Se-75 -8.30E-01 9.60E-01 3.40E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-223-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCilL) (pCi/L)

L 51 L9016-02 3/22/2005 Zn-65 -3.50E+00 1.80E+00 7.30E+00 Ws 1.80E+00 6.20E+OC L Ws Ws Ws 51 51 51 L9016-02 L9221-02 L9221-02 3/22/2005 4/26/2005 4/26/2005 Zr-95 AcTh-228 Ag-108m 1.20E+00

-4.50E+00

-7.00E-01 5.40E+00 1.10E+00 2.20E+01 4.40E+OO Ws 51 L9221-02 4/26/2005 Ag-110m 1.30E+00 1.80E+00 6.60E+OO L Ws Ws 51 51 L9221-02 L9221-02 4/26/2005 4/26/2005 Ba-140 Be-7

-1.OOE+00

-8.00E+00 3.40E+00 1.20E+01 1.40E+01 4.70E+01 Ws 51 L9221 -02 4/26/2005 Ce-141 5.50E+00 2.70E+00 8.70E+OOI L WS Ws 51 51 L9221-02 L9221-02 4/26/2005 4/26/2005 Ce-144 Co-57

-1.12E+01

-1.50E+00 8.40E+00 I.OOE+00 1.40E+00 3.1OE+01 3.90E+00 6.30E+00 Ws 51 L9221-02 4/26/2005 Co-58 -2.50E+00 L WS WS Ws 51 51 51 L9221-02 L9221-02 L9221 -02 4/26/2005 4/26/2005 4/26/2005 Co-60 Cr-51 Cs-1 34 6.00E-01 4.00E+OO 7.00E-01 1.50E+00 1.30E+01 1.70E+00 5.90E+00 4.70E+O¶ 6.20E+00 4/26/2005 Cs-137 O.OOE+O0 1.30E+00 4.90E+0()

L Ws wS WE 51 51 51 L9221 -02 L9221-02 L9221-02 4/26/2005 4/26/2005 Fe-59 1-131 1.16E+01 5.50E+00 4.90E+00 3.40E+00 1.402+01 1.1OE+01 WS 51 L9221 -02 4/26/2005 K-40 1.22E+02 3.60E+01 I.OOE+O;'

L WC;I WC;I 51 51 L9221 -02 L9221-02 4/26/2005 4/26/2005 La-140 Mn-54

-1.10E+00

-8.OOE-01 3.90E+00 1.40E+00 1.60E+OI 5.80E+0)

WE; 51 L9221-02 4/26/2005 Nb-95 -9.OOE-01 1.50E+00 6.30E+0O L WC WC;I WC;I 51 51 51 L9221-02 L9221-02 L9221 -02 4/26/2005 4/26/2005 4/26/2005 Ru-103 Ru-106 Sb-124

-1.30E+00 9.OOE+00 4.90E+00 1.50E+00 1.40E+01 4.20E+00 6.1 OE+0I) 4.90E+OI 1.50E+O I 1.30E+O I Li W'i W';

W';

51 51 51 L9221-02 L9221-02 L9221-02 4/26/2005 4/26/2005 4/26/2005 Sb-125 Se-75 Zn-65 5.00E+00

-1.OOE-01

-1.50E+00 3.90E+00 1.40E+00 3.50E+00 5.10E+0) 1.40E+O0 51 L9221-02 4/26/2005 Zr-95 3.60E+00 2.80E+00 9.50E+0')

WC;I 51 L9364-02 5/26/2005 AcTh-228 -4.80E+oo 6.40E+00 2.40E+O0 51 L9364-02 5/26/2005 Ag-108m -2.00E-01 1.70E+00 6.10E+0')

WC;I 51 L9364-02 5/26/2005 Ag-11Om -3.00E+00 2.30E+00 8.70E+O0 WC;I 51 L9364-02 5/26/2005 Ba-140 -4.00E-01 3.20E+00 1.20E+01 51 L9364-02 5/26/2005 Be-7 -1.50E+01 1.50E+01 5.60E+01 51 L9364-02 5/26/2005 Ce-141 9.ooE-01 3.OOE+00 1.OOE+O0 51 L9364-02 5/26/2005 Ce-144 3.OOE+00 1.OOE+01 3.50E+01 WC;I 51 L9364-02 5/26/2005 Co-57 -4.OOE-01 1.30E+00 4.60E+00 51 L9364-02 5/26/2005 Co-58 6.OOE-01 1.90E+00 6.70E+00 W'S 51 L9364-02 5/26/2005 Co-60 5.OOE-01 2.00E+OO 7.1OE+00 51 L9364-02 5/26/2005 Cr-51 8.00E+00 1.70E+01 5.90E+01 51 L9364-02 5/26/2005 Cs-134 1.OOE+OO 1.80E+00 6.20E+00 W'S 51 L9364-02 5/26/2005 Cs-137 3.00E-01 2.80E+00 9.70E+00 W'; 51 L9364-02 5/26/2005 Fe-59 2.80E+00 4.70E+00 1.70E+01 W'; 51 L9364-02 5/26/2005 1-131 4.90E+00 4.40E+00 1.50E+01 51 L9364-02 5/26/2005 K-40 2.25E+02 3.60E+01 9.50E+01 51 L9364-02 5/26/2005 La-140 -5.00E-01 3.70E+00 1.40E+01 51 L9364-02 5/26/2005 Mn-54 -7.00E-01 1.80E+00 6.70E+00 51 L9364-02 5/26/2005 Nb-95 4.OOE+O0 2.90E+00 9.50E+00 W'; 51 L9364-02 5/26/2005 Ru-1 03 -4.50E+00 1.9OE+00 7.40E+00 W',I 51 L9364-02 5/26/2005 Ru-106 8.00E+00 1.50E+01 5.40E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-224-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 J SAMPLE END CONC STD.DEV. MDC I,

TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCVL) (pCi/L)

Ws 51 L9364-02 5/26/2005 Sb-1 24 -4.90E+00 4.30E+00 1.70E+01 Ws 51 L9364-02 5/26/2005 Sb-1 25 -4.OOE-01 4.80E+00 1.70E+01 WS 51 L9364-02 5/26/2005 Se-75 6.OOE-01 2.1OE+00 7.30E+00 WS 51 L9364-02 5/26/2005 Zn-65 4.40E+00 7.90E+00 2.70E+01 O.OOE+00 2.90E+00 1.1OE+01 Ws Ws WS 51 51 51 L9364-02 L9464-02 L9464-02 5/26/2005 6/20/2005 6/20/2005 Zr-95 AcTh-228 Ag-108m 3.OOE+00 1.60E+00 5.20E+00 1.OOE+O0 1.80E+01 3.40E+00 L

WS 51 L9464-02 6/20/2005 Ag-11im 6.OOE-01 1.70E+00 6.1OE+00 WS 51 L9464-02 6/20/2005 Ba-140 I.OOE-01 2.OOE+00 7.30E+00 WS 51 L9464-02 6/20/2005 Be-7 1.60E+00 9.90E+00 3.50E+01 WS 51 L9464-02 6/20/2005 Ce-141 -2.OOE+OO 2.00E+O0 7.1OE+00 WS 51 L9464-02 6/20/2005 Ce-144 1.50E+00 7.20E+00 2.50E+01 Ii WS 51 L9464-02 6/20/2005 Co-57 1.15E+00 9.30E-01 3.1 OE+00 Ws 51 L9464-02 6/20/2005 Co-58 -4.00E-01 1.30E+00 4.60E+00 Ws 51 L9464-02 6/20/2005 Co-60 2.OOE-O1 1.30E+00 4.80E+00 A.

WS 51 L9464-02 6/20/2005 Cr-51 -1.OOE+OO 1.20E+01 4.30E+01 Ws 51 L9464-02 6/20/2005 Cs-134 -1.40E+00 1.30E+00 4.80E+00 WS 51 L9464-02 6/20/2005 Cs-1 37 -1.IOE+00 1.30E+00 4.80E+00 WS 51 L9464-02 6/20/2005 Fe-59 3.30E+00 3.70E+00 1.30E+01 WS 51 L9464-02 6/20/2005 1-131 7.OOE-01 2.60E+00 8.90E+OO WS 51 L9464-02 6/20/2005 K-40 2.71 E+02 2.80E+01 6.30E+01 Ws Ws 51 51 L9464-02 L9464-02 6/20/2005 6/20/2005 La-140 Mn-54 Nb-95 1.OOE-01

-1.OOE-01 8.OOE-01 2.30E+00 1.20E+00 1.40E+00 8.40E+00 4.40E+00 4.90E+00 L

WS 51 L9464-02 6/20/2005 WS 51 L9464-02 6/20/2005 Ru-1 03 -3.50E+00 1.20E+00 4.8OE+OO WS 51 L9464-02 6/20/2005 Ru-1 06 5.OOE+O0 1.20E+01 4.30E+01 Ws 51 L9464-02 6/20/2005 Sb-124 -6.OOE-01 3.50E+00 1.30E+01 51 6/20/2005 Sb-125 -1.OOE-01 3.20E+00 1.1OE+01 WS WS WS 51 51 L9464-02 L9464-02 L9464-02 6/20/2005 6/20/2005 Se-75 Zn-65 7.OOE-01

-1.80E+00 1 AOE+00 2.90E+00 4.80E+00 1.10E+01 L

WS 51 L9464-02 6/20/2005 Zr-95 6.50E+00 2.20E+00 6.80E+00 WS 51 L9673-02 7/27/2005 AcTh-228 4.50E+00 5.20E+00 1.80E+01 WS 51 L9673-02 7/27/2005 Ag-108m -2.OOE-01 1.20E+00 4.30E+00 Ws 51 L9673-02 7/27/2005 Ag- 1Om 2.1OE+OO 2.OOE+00 6.90E+00 WS 51 L9673-02 7/27/2005 Ba-140 5.OOE-01 2.70E+00 1.OOE+01 Ws 51 L9673-02 7/27/2005 Be-7 -1.OOE+01 1.20E+01 4.40E+01 WS 51 L9673-02 7/27/2005 Ce-141 5.OOE-O1 2.1OE+O0 7.30E+00 I .40E+00 2.40E+01 L]

Ws 51 L9673-02 7/27/2005 Ce-144 6.90E+00 WS 51 L9673-02 7/27/2005 Co-57 1.20E-01 8.20E-01 2.80E+00 WS 51 L9673-02 7/27/2005 Co-58 3.1OE+00 1.50E+00 4.90E+00 WS 51 L9673-02 7/27/2005 Co-60 1.30E+00 1.70E+00 6.OOE+00 WS 51 L9673-02 7/27/2005 Cr-51 6.OOE+00 1.20E+01 4.1OE+O1 Ws 51 L9673-02 7/27/2005 Cs-134 -6.OOE-01 1.90E+00 6.90E+00 WS 51 L9673-02 7/27/2005 Cs-137 -7.OOE-01 1.40E+00 5.20E+00 WS 51 L9673-02 7/27/2005 Fe-59 -2.70E+00 5.1OE+00 1.90E+01 WS 51 L9673-02 7/27/2005 1-131 5.60E+00 2.40E+00 7.60E+00 Ws 51 L9673-02 7/27/2005 K-40 3.07E+02 3.80E+01 8.70E+01 WS 51 L9673-02 7/27/2005 La-140 6.OOE-01 3.20E+00 1.20E+01 WS 51 L9673-02 7/27/2005 Mn-54 -4.OOE-01 1.40E+00 5.30E+00

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-225-

L Seabrook Station Radiological Environmental Monitoring Program Data - 2005 END CONC STD.DEV. MDC SAMPLE TYPE STATION LSN DATE NUCLIDE (pCilL) (pCi/L) (pCiIL)

WS 51 L9673-02 7/27/2005 Nb-95 1.OOE+00 1.70E+00 5.80E+OC WS 51 L9673-02 7/27/2005 Ru-1 03 -2.90E+00 1.70E+00 6.30E+OCo L WS 51 L9673-02 7/27/2005 Ru-1 06 -3.00E+00 1.40E+01 4.90E+01 1.40E+01 WS 51 L9673-02 7/27/2005 Sb-1 24 2.40E+00 3.90E+00 WS 51 L9673-02 7/27/2005 Sb-125 -2.40E+00 3.70E+00 1.30E+01 WS 51 L9673-02 7/27/2005 Se-75 -2.80E+00 1.50E+00 5.50E+00 Ws 51 L9673-02 7/27/2005 Zn-65 -3.40E+00 3.30E+00 1.30E+01 Ws 51 L9673-02 7/27/2005 Zr-95 1.40E+00 3.00E+OO 1.00E+01 L WS Ws 51 51 L9781-02 L9781-02 8/22/2005 8/22/2005 AcTh-228 Ag-108m 8.40E+00 3.00E-01

-7.00E-01 4.1 OE+00 8.40E-01 1.40E+00 1.30E+O, 2.90E+0O 5.10E+0O Ws 51 L9781-02 8/22/2005 Ag-11Om L Ws Ws Ws 51 51 51 L9781-02 L9781-02 L9781-02 8/22/2005 8/22/2005 8/22/2005 Ba-140 Be-7 Ce-141 2.60E+00

-1.03E+01

-7.00E+00 2.80E+00 9.50E+00 3.1 OE+00 9.50E+0()

3.40E+OI 1.1OE+OI WE 51 L9781-02 8/22/2005 Ce-144 -5.70E+00 6.30E+00 8.00E-01 2.20E+OI 2.80E+00 Ws 51 L9781-02 8/22/2005 Co-57 -8.00E-01 Ws 51 L9781-02 8/22/2005 Co-58 9.00E-01 1.20E+00 3.90E+00 Ws 51 L9781-02 8/22/2005 Co-60 1.70E+00 1.1OE+00 3.60E+00 J WS WS 51 51 L9781-02 L9781-02 8/22/2005 8/22/2005 Cr-51 Cs-1 34 7.00E+00 1.OOE-01 1.20E+01 1.10E+00 4.10E+OI 3.90E+00 Cs-137 -1.27E+00 9.90E-01 3.70E+00 WCx 51 L9781-02 8/22/2005 L

U'. W';

WE; 51 51 L9781-02 L9781-02 L9781-02 8/22/2005 8/22/2005 8/2212005 Fe-59 1-131 K-40 6.00E+OO O.OOE+OO 2.72E+02 3.50E+00 4.20E+00 2.50E+01 1.10E+OI 1.40E+O 1 6.1 OE+O I 51 WE. 51 L9781-02 8/2212005 La-140 3.00E+00 3.20E+00 1.1OE+01 WE; 51 L9781-02 8/22/2005 Mn-54 -5.00E-01 1.OOE+00 3.70E+0O W';I 51 L9781-02 8/2212005 Nb-95 1.OOE+00 1.40E+00 4.90E+O0 W';I 51 L9781-02 8/22/2005 Ru-1 03 -1.60E+00 1.40E+00 4.90E+0O WS 51 L9781-02 8/22/2005 Ru-106 -1.30E+00 9.80E+00 3.40E+O0 W'; 51 L9781-02 8/22/2005 Sb-124 O.OOE+00 2.90E+00 1.OOE+O I W'; 51 L9781-02 8/22/2005 Sb-125 5.00E-01 2.60E+00 9.10E+O)

W';i 51 L9781-02 8/22/2005 Se-75 3.00E+OO 1.40E+00 4.50E+O)

WS 51 L9781-02 8/22/2005 Zn-65 2.00E-01 2.50E+00 8.70E+O3 51 L9781-02 8/22/2005 Zr-95 3.90E+00 2.1OE+00 6.70E+O3 51 L9920-02 9/19/2005 AcTh-228 -3.1OE+OO 6.40E+00 2.40E+01 WE; Ag-108m 1.40E+00 1.40E+00 4.70E+OD 51 L9920-02 9/19/2005 WC;I 51 L9920-02 9/1912005 Ag-11Om -1.90E+00 2.70E+00 1.00E+01 W'S 51 L9920-02 9/19/2005 Ba-140 1.90E+00 3.30E+00 1.20E+01 W'i 51 L9920-02 911912005 Be-7 1.50E+01 1.60E+01 5.50E+01 W'; 51 L9920-02 9119/2005 Ce-141 -8.10E+00 2.70E+00 1.OOE+01 51 L9920-02 9119/2005 Ce-144 -2.00E+OO 1.OOE+01 3.50E+01 W'; Co-57 1.40E+00 4.80E+00 51 L9920-02 9/19/2005 -1.0OE+OO W'; L9920-02 9/19/2005 Co-5B -2.50E+00 1.80E+00 7.30E+00 W'S 51 W'; 51 L9920-02 9/19/2005 Co-60 -5.00E-01 1.80E+00 7.00E+00 W'; 51 L9920-02 9/19/2005 Cr-51 -2.00E+00 1.70E+01 6.10E+01 W'; 51 L9920-02 9119/2005 Cs-1 34 1.80E+0O 2.1OE+00 7.40E+00 51 L9920-02 9/19/2005 Cs-137 -3.OOE-01 1.50E+00 5.70E+00 51 L9920-02 9119/2005 Fe-59 -7.80E+00 4.50E+00 2.00E+01 51 L9920-02 9/19/2005 1-131 -5.20E+00 4.00E+00 1.50E+01

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-226-

Seabrook Station Radiological Environmental Monitoring Program Data - 2005 SAMPLE END CONC STD.DEV. MDC TYPE STATION LSN DATE NUCLIDE (pCi/L) (pCilL) (pCi/L)

WS 51 L9920-02 9/19/2005 K-40 3.49E+02 4.30E+01 8.70E+01

WS 51 L9920-02 9/19/2005 La-140 2.20E+00 3.80E+00 1.40E+01 WS 51 L9920-02 9/19/2005 Mn-54 -1.00E+00 1.70E+00 6.40E+00 WS 51 L9920-02 9/19/2005 Nb-95 8.OOE-01 2.OOE+00 7.30E+00 WS 51 L9920-02 9/19/2005 Ru-103 1.80E+00 2.10E+00 7.20E+00 WS 51 L9920-02 9/19/2005 Ru-106 6.OOE+00 1.70E+01 6.00E+01 WS 51 L9920-02 9/19/2005 Sb-124 -5.O0E+00 3.60E+00 1.70E+01 WS 51 L9920-02 9/19/2005 Sb-125 4.20E+00 4.20E+00 1.40E+01 WS 51 L9920-02 9/19/2005 Se-75 -1.90E+00 2.20E+00 7.90E+00 WS 51 L9920-02 9/19/2005 Zn-65 -3.20E+00 4.60E+00 1.80E+01 WS 51 L9920-02 9/19/2005 Zr-95 3.80E+00 3.OOE+00 1.OOE+01 WS 51 L10148-0210/27/2005 AcTh-228 -5.OOE-01 2.30E+00 7.70E+00 WS 51 L10148-0210/27/2005 Ag-108m 3.10E-01 3.50E-01 1.20E+00 WS 51 L10148-0210/27/2005 Ag-110m 2.20E-01 5.10E-01 1.70E+00 WS 51 L10148-0210/27/2005 Ba-140 -6.OOE-01 1.10E+00 3.80E+00 WS 51 L10148-0210/27/2005 Be-7 -3.OOE-01 4.0OE+00 1.30E+01 WS 51 L10148-0210/27/2005 Ce-141 -1.60E+00 1.10E+00 3.80E+00 WS WS 51 51 51 L10148-0210/27/2005 L10148-0210/27/2005 L10148-0210/27/2005 Ce-144 Co-57 Co-58 3.30E+00 2.50E-01

-4.80E-01 2.40E+00 2.70E-01 4.40E-01 7.90E+00 9.OOE-01 1.50E+00 L

WS WS 51 L10148-0210/27/2005 Co-60 -4.20E-01 6.50E-01 2.20E+00 WS 51 L10148-0210/27/2005 Cr-51 5.00E+00 4.80E+00 1.60E+01 WS 51 L10148-0210/27/2005 Cs-134 9.70E-01 4.20E-01 1.40E+OO L WS 51 L10148-0210/27/2005 Cs-137 -3.50E-01 3.60E-01 1.20E+O0 WS WS 51 51 51 L10148-0210/27/2005 L10148-0210/27/2005 L10148-0210/27/2005 Fe-59 1-131 K-40

-6.10E-01 3.OOE-01 2.54E+02 9.70E-01 2.OOE+00 9.80E+00 3.30E+00 6.70E+00 2.60E+01 U

WS WS WS WS 51 51 51 L10148-0210/27/2005 L10148-0210/27/2005 L10148-0210/27/2005 La-140 Mn-54 Nb-95

-7.OOE-01

-1.40E-01 I.OOE-01 1.30E+00 3.80E-01 5.20E-01 4.40E+00 1.30E+O0 1.80E+00 U

WS 51 L10148-0210/27/2005 Ru-103 -6.60E-01 5.40E-01 1.80E+O0 WS 51 L10148-0210/27/2005 Ru-106 7.OOE-01 3.70E+00 1.20E+01 WS 51 L10148-0210/27/2005 Sb-124 -5.00E-02 9.10E-01 3.1OE+00 L WS 51 L10148-0210/27/2005 Sb-125 8.90E-01 9.40E-01 3.30E+00 51 L10148-0210/27/2005 Se-75 4.90E-01 5.10E-01 1.70E+0O WS WS 51 L10148-0210/27/2005 Zn-65 2.OOE+00 1.50E+00 5.OOE+00 L WS 51 L10148-0210/27/2005 Zr-95 -4.40E-01 7.60E-01 2.60E+00 L10205-0211/21/2005 AcTh-228 8.OOE-01 6.20E+00 2.IOE+01 WS WS 51 51 L10205-0211/21/2005 Ag-108m 1.20E+00 1.IOE+00 3.50E+00 6.40E+00 L

WS 51 L10205-0211/21/2005 Ag-1I1m -1.0OE+00 1.80E+00 WS 51 L10205-0211/21/2005 Ba-140 -1.20E+00 2.40E+00 8.80E+00 WS 51 L10205-0211/21/2005 Be-7 -4.OOE+00 1.OOE+01 3.60E+01 WS 51 L10205-0211/21/2005 Ce-141 7.00E-01 1.90E+00 6.60E+OO WS 51 L10205-0211/21/2005 Ce-144 7.OOE-01 6.60E+00 2.20E+01 WS 51 L10205-0211/21/2005 Co-57 2.60E-01 8.50E-01 2.90E+00 WS 51 L10205-0211/21/2005 Co-58 -5.OOE-01 1.30E+00 4.70E+00 Li WS 51 L10205-0211/21/2005 Co-60 1.80E+00 1.60E+00 5.30E+00 WS 51 L10205-0211/21/2005 Cr-51 -1.0OE+00 1.20E+01 4.10E+01 WS 51 L10205-0211/21/2005 Cs-134 -1.OOE+00 1.30E+00 4.80E+00

Radioactivity detected In sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-227-

La Seabrook Station Radiological Environmental Monitoring Program Data - 2005 STD.DEV. MDC SAMPLE END CONC TYPE: STATION LSN DATE NUCLIDE (pCi/L) (pCi/L) (pCi/L)

L Li 0205-0211/21/2005 Cs-137 8.OOE-01 1.30E+00 4.60E+00 IU WS WS WS 51 51 51 L10205-0211/21/2005 L10205-0211/21/2005 Fe-59 1-131 2.60E+00

-1.50E+00 2.80E+00 2.80E+OO 9.70E+00 9.70E+00 WS 51 LI 0205-0211121/2005 K-40 2.35E+02 2.80E+01 6.90E+01 WS 51 LI 0205-0211/21/2005 La-140 -1.40E+00 2.70E+00 I.OOE+01 WS 51 LI 0205-0211/21/2005 Mn-54 2.70E+00 1.30E+00 4.20E+WC L Ws WS WS 51 51 51 L10205-0211/21/2005 L10205-0211/21/2005 L10205-0211/21/2005 Nb-95 Ru-103 Ru-106

-2.70E+00

-2.30E+00

-2.60E+01 1.50E+00 1.30E+00 1.20E+01 5.60E+OC 4.80E+OCO 4.60E+01 1.OOE+01 U WS Ws WS 51 51 51 LI 0205-0211/21/2005 Li 0205-0211/21/2005 LI 0205-0211/21/2005 Sb-124 Sb-125 Se-75 5.OOE-01 4.OOE-01 2.80E+00 2.80E+OO 3.1 OE+00 1.60E+00 1.1OE+01 5.10E+OCI WS 51 L10205-0211/21/2005 Zn-65 -2.50E+00 4.20E+00 1.50E+01 Ws 51 L10205-0211/21/2005 Zr-95 -1.90E+00 2.00E+OO 7.60E+0O Ws 51 Li 0354-0212/28/2005 AcTh-228 -3.80E+00 7.30E+00 2.70E+01 WS 51 LI 0354-0212/28/2005 Ag-108m 4.OOE-01 1.30E+00 4.70E+0O WS 51 LI 0354-0212/28/2005 Ag-1I Om 1.90E+00 2.20E+00 7.80E+00 WS 51 LI 0354-0212/28/2005 Ba-140 3.IOE+00 2.70E+00 9.30E+00 Ws 51 LI 0354-0212/28/2005 Be-7 2.0OE+00 1.50E+01 5.30E+O'I WS 51 LI 0354-0212/28/2005 Ce-141 4.30E+00 2.90E+00 9.40E+0)

WS 51 L10354-0212/28/2005 Ce-144 -3.0OE+00 1.OOE+01 3.60E+OI L WS WS 51 51 L10354-0212/28/2005 LI 0354-0212/28/2005 LI 0354-0212/28/2005 Co-57 Co-58 Co-60 2.OOE-01 5.OOE-01 2.80E+00 1.30E+00 2.OOE+OO 2.OOE+00 4.50E+0()

7.OOE+0()

6.80E+0O WS 51 Ws 51 LI 0354-0212/28/2005 Cr-51 -1.70E+01 1.60E+01 5.70E+0OI WS 51 LI 0354-0212/28/2005 Cs-1 34 8.OOE-01 1.80E+00 6.40E+0O WS 51 L10354-0212/28/2005 Cs-137 -1.20E+00 1.70E+00 6.50E+0()

Ws 51 LI 0354-0212/28/2005 Fe-59 3.20E+00 3.70E+00 1.30E+O0I WS 51 L10354-0212/28/2005 1-131 3.20E+00 3.OOE+00 1.OOE+O I WS 51 L10354-0212/28/2005 K-40 2.16E+02 3.70E+01 9.40E+0 I Ws 51 Li 0354-0212/28/2005 La-140 3.50E+00 3.1OE+00 1.1 OE+O I Ws 51 LI 0354-0212/28/2005 Mn-54 -2.OOE-01 1.50E+00 5.60E+0)

Ws 51 Li 0354-0212/28/2005 Nb-95 1.60E+00 2.30E+00 8.10E+0O WS 51 LI 0354-0212/28t2005 Ru-103 -2.60E+00 1.9OE+00 7.20E+0o Ws 51 LI 0354-0212/28/2005 Ru-I 06 5.OOE+00 1.70E+01 5.90E+O l WS 51 L10354-0212/28/2005 Sb-124 -1.70E+00 3.60E+00 1.50E+01 Ws 51 L10354-0212/28/2005 Sb-125 5.OOE-01 4.70E+00 1.70E+01 WS 51 LI 0354-0212/28/2005 Se-75 2.80E+00 2.30E+00 7.60E+OD WS 51 L10354-0212/28/2005 Zn-65 -1.70E+00 4.IOE+00 1.50E+01 WE 51 L10354-0212/28/2005 Zr-95 -3.20E+00 3.30E+00 1.30E+01 WE 51 L9105-02 3/22/2005 H-3 -4.90E+02 3.20E+02 1.1OE+03 WE. 51 L9595-02 6/20/2005 H-3 2.20E+02 3.80E+02 1.20E+03 Ws, 51 L10044-02 9/1912005 H-3 8.O0E+01 3.80E+02 1.20E+03 Ws 51 LI 0457-0212/28/2005 H-3 -2.20E+02 4.50E+02 1.40E+03

Radioactivity detected in sample (i.e., concentration > 3 X standard deviation)

+ Minimum Detectable Concentration > Lower Limit of Detection Requirement

-228-

SBK-L-06097, 2005 Annual Radiological Environmental Operating Report

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SBK-L-06097, 2005 Annual Radiological Environmental Operating Report

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SUMMARY

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